gadget.c revision 47a1685f139271de401212bd69d17374ca5a5270
18b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 28b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * linux/drivers/usb/gadget/s3c-hsotg.c 35b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4dfbc6fa3e1f19d31aeb6afdffeede7271e29bfbfAnton Tikhomirov * Copyright (c) 2011 Samsung Electronics Co., Ltd. 5dfbc6fa3e1f19d31aeb6afdffeede7271e29bfbfAnton Tikhomirov * http://www.samsung.com 6dfbc6fa3e1f19d31aeb6afdffeede7271e29bfbfAnton Tikhomirov * 75b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Copyright 2008 Openmoko, Inc. 85b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Copyright 2008 Simtec Electronics 95b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Ben Dooks <ben@simtec.co.uk> 105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * http://armlinux.simtec.co.uk/ 115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * S3C USB2.0 High-speed / OtG driver 135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This program is free software; you can redistribute it and/or modify 155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * it under the terms of the GNU General Public License version 2 as 165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * published by the Free Software Foundation. 178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/kernel.h> 205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/module.h> 215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/spinlock.h> 225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/interrupt.h> 235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/platform_device.h> 245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/dma-mapping.h> 255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/debugfs.h> 265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/seq_file.h> 275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/delay.h> 285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/io.h> 295a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 30e50bf385bfadeaacfb8af07b9b78dcfdef339981Maurus Cuelenaere#include <linux/clk.h> 31fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski#include <linux/regulator/consumer.h> 32c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#include <linux/of_platform.h> 3374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter#include <linux/phy/phy.h> 345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/usb/ch9.h> 365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/usb/gadget.h> 37b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri#include <linux/usb/phy.h> 38126625e1bf3228a3db7359310344617bee878517Lukasz Majewski#include <linux/platform_data/s3c-hsotg.h> 395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen#include "hw.h" 415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 42fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewskistatic const char * const s3c_hsotg_supply_names[] = { 43fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski "vusb_d", /* digital USB supply, 1.2V */ 44fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski "vusb_a", /* analog USB supply, 1.1V */ 45fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski}; 46fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 478b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/* 488b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * EP0_MPS_LIMIT 495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Unfortunately there seems to be a limit of the amount of data that can 5125985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * be transferred by IN transactions on EP0. This is either 127 bytes or 3 5225985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * packets (which practically means 1 packet and 63 bytes of data) when the 535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * MPS is set to 64. 545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This means if we are wanting to move >127 bytes of data, we need to 565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * split the transactions up, but just doing one packet at a time does 575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * not work (this may be an implicit DATA0 PID on first packet of the 585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transaction) and doing 2 packets is outside the controller's limits. 595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * If we try to lower the MPS size for EP0, then no transfers work properly 615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * for EP0, and the system will fail basic enumeration. As no cause for this 625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * has currently been found, we cannot support any large IN transfers for 635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * EP0. 645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#define EP0_MPS_LIMIT 64 665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstruct s3c_hsotg; 685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstruct s3c_hsotg_req; 695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * struct s3c_hsotg_ep - driver endpoint definition. 725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The gadget layer representation of the endpoint. 735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @name: The driver generated name for the endpoint. 745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @queue: Queue of requests for this endpoint. 755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @parent: Reference back to the parent device structure. 765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The current request that the endpoint is processing. This is 775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * used to indicate an request has been loaded onto the endpoint 785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * and has yet to be completed (maybe due to data move, or simply 795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * awaiting an ack from the core all the data has been completed). 805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @debugfs: File entry for debugfs file for this endpoint. 815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @lock: State lock to protect contents of endpoint. 825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @dir_in: Set to true if this endpoint is of the IN direction, which 835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * means that it is sending data to the Host. 845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @index: The index for the endpoint registers. 854fca54aa5829328a356aea31895b817dacba2861Robert Baldyga * @mc: Multi Count - number of transactions per microframe 861479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga * @interval - Interval for periodic endpoints 875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @name: The name array passed to the USB core. 885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @halted: Set if the endpoint has been halted. 895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @periodic: Set if this is a periodic ep, such as Interrupt 901479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga * @isochronous: Set if this is a isochronous ep 915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @sent_zlp: Set if we've sent a zero-length packet. 925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @total_data: The total number of data bytes done. 935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @fifo_size: The size of the FIFO (for periodic IN endpoints) 945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @fifo_load: The amount of data loaded into the FIFO (periodic IN) 955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @last_load: The offset of data for the last start of request. 965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @size_loaded: The last loaded size for DxEPTSIZE for periodic IN 975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is the driver's state for each registered enpoint, allowing it 995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to keep track of transactions that need doing. Each endpoint has a 1005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * lock to protect the state, to try and avoid using an overall lock 1015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * for the host controller as much as possible. 1025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 1035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * For periodic IN endpoints, we have fifo_size and fifo_load to try 1045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * and keep track of the amount of data in the periodic FIFO for each 1055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of these as we don't have a status register that tells us how much 106e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks * is in each of them. (note, this may actually be useless information 107e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks * as in shared-fifo mode periodic in acts like a single-frame packet 108e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks * buffer than a fifo) 1095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 1105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstruct s3c_hsotg_ep { 1115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ep ep; 1125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct list_head queue; 1135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *parent; 1145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req; 1155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct dentry *debugfs; 1165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long total_data; 1195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int size_loaded; 1205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int last_load; 1215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int fifo_load; 1225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned short fifo_size; 1235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned char dir_in; 1255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned char index; 1264fca54aa5829328a356aea31895b817dacba2861Robert Baldyga unsigned char mc; 1271479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga unsigned char interval; 1285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int halted:1; 1305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int periodic:1; 1311479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga unsigned int isochronous:1; 1325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int sent_zlp:1; 1335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks char name[10]; 1355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 1365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * struct s3c_hsotg - driver state. 1395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @dev: The parent device supplied to the probe function 1405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @driver: USB gadget driver 141b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri * @phy: The otg phy transceiver structure for phy control. 14274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter * @uphy: The otg phy transceiver structure for old USB phy control. 143b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri * @plat: The platform specific configuration data. This can be removed once 144b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri * all SoCs support usb transceiver. 1455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @regs: The memory area mapped for accessing registers. 1465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @irq: The IRQ number we are using 147fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski * @supplies: Definition of USB power supplies 148f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter * @phyif: PHY interface width 14910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks * @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos. 150b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * @num_of_eps: Number of available EPs (excluding EP0) 1515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @debug_root: root directrory for debugfs. 1525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @debug_file: main status file for debugfs. 1535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @debug_fifo: FIFO status file for debugfs. 1545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep0_reply: Request used for ep0 reply. 1555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep0_buff: Buffer for EP0 reply data, if needed. 1565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl_buff: Buffer for EP0 control requests. 1575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl_req: Request for EP0 control packets. 15871225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski * @setup: NAK management for EP0 SETUP 15912a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski * @last_rst: Time of last reset 1605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @eps: The endpoints being supplied to the gadget framework 1615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 1625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstruct s3c_hsotg { 1635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct device *dev; 1645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_gadget_driver *driver; 16574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct phy *phy; 16674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct usb_phy *uphy; 1675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_plat *plat; 1685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16922258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spinlock_t lock; 17022258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski 1715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs; 1725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int irq; 17331ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski struct clk *clk; 1745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 175fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsotg_supply_names)]; 176fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 177f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter u32 phyif; 17810aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks unsigned int dedicated_fifos:1; 179b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski unsigned char num_of_eps; 18010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 1815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct dentry *debug_root; 1825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct dentry *debug_file; 1835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct dentry *debug_fifo; 1845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *ep0_reply; 1865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *ctrl_req; 1875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u8 ep0_buff[8]; 1885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u8 ctrl_buff[8]; 1895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_gadget gadget; 19171225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski unsigned int setup; 19212a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski unsigned long last_rst; 193b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski struct s3c_hsotg_ep *eps; 1945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 1955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * struct s3c_hsotg_req - data transfer request 1985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The USB gadget request 1995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @queue: The list of requests for the endpoint this is queued for. 2005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @in_progress: Has already had size/packets written to core 2015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @mapped: DMA buffer for this request has been mapped via dma_map_single(). 2025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstruct s3c_hsotg_req { 2045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request req; 2055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct list_head queue; 2065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned char in_progress; 2075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned char mapped; 2085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 2095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* conversion functions */ 2115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline struct s3c_hsotg_req *our_req(struct usb_request *req) 2125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return container_of(req, struct s3c_hsotg_req, req); 2145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline struct s3c_hsotg_ep *our_ep(struct usb_ep *ep) 2175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return container_of(ep, struct s3c_hsotg_ep, ep); 2195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline struct s3c_hsotg *to_hsotg(struct usb_gadget *gadget) 2225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return container_of(gadget, struct s3c_hsotg, gadget); 2245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline void __orr32(void __iomem *ptr, u32 val) 2275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(readl(ptr) | val, ptr); 2295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline void __bic32(void __iomem *ptr, u32 val) 2325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(readl(ptr) & ~val, ptr); 2345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* forward decleration of functions */ 2375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_dump(struct s3c_hsotg *hsotg); 2385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * using_dma - return the DMA status of the driver. 2415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 2425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return true if we're using DMA. 2445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Currently, we have the DMA support code worked into everywhere 2465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that needs it, but the AMBA DMA implementation in the hardware can 2475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * only DMA from 32bit aligned addresses. This means that gadgets such 2485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * as the CDC Ethernet cannot work as they often pass packets which are 2495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * not 32bit aligned. 2505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Unfortunately the choice to use DMA or not is global to the controller 2525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * and seems to be only settable when the controller is being put through 2535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * a core reset. This means we either need to fix the gadgets to take 2545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * account of DMA alignment, or add bounce buffers (yuerk). 2555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Until this issue is sorted out, we always return 'false'. 2575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline bool using_dma(struct s3c_hsotg *hsotg) 2595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return false; /* support is not complete */ 2615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_en_gsint - enable one or more of the general interrupt 2655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 2665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ints: A bitmask of the interrupts to enable 2675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_en_gsint(struct s3c_hsotg *hsotg, u32 ints) 2695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 27094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gsintmsk = readl(hsotg->regs + GINTMSK); 2715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 new_gsintmsk; 2725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks new_gsintmsk = gsintmsk | ints; 2745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (new_gsintmsk != gsintmsk) { 2765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "gsintmsk now 0x%08x\n", new_gsintmsk); 27794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(new_gsintmsk, hsotg->regs + GINTMSK); 2785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 2795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_disable_gsint - disable one or more of the general interrupt 2835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 2845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ints: A bitmask of the interrupts to enable 2855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_disable_gsint(struct s3c_hsotg *hsotg, u32 ints) 2875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 28894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gsintmsk = readl(hsotg->regs + GINTMSK); 2895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 new_gsintmsk; 2905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks new_gsintmsk = gsintmsk & ~ints; 2925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (new_gsintmsk != gsintmsk) 29494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(new_gsintmsk, hsotg->regs + GINTMSK); 2955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ctrl_epint - enable/disable an endpoint irq 2995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 3005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint index 3015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @dir_in: True if direction is in. 3025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @en: The enable value, true to enable 3035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 3045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Set or clear the mask for an individual endpoint's interrupt 3055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * request. 3065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 3075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_ctrl_epint(struct s3c_hsotg *hsotg, 3085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int ep, unsigned int dir_in, 3095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int en) 3105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 3125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 bit = 1 << ep; 3135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 daint; 3145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!dir_in) 3165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bit <<= 16; 3175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks local_irq_save(flags); 31994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski daint = readl(hsotg->regs + DAINTMSK); 3205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (en) 3215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks daint |= bit; 3225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 3235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks daint &= ~bit; 32494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(daint, hsotg->regs + DAINTMSK); 3255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks local_irq_restore(flags); 3265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 3275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 3295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_init_fifo - initialise non-periodic FIFOs 3305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance. 3315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 3325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_init_fifo(struct s3c_hsotg *hsotg) 3335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3340f002d200598918f5058dfcfda3da46f29019765Ben Dooks unsigned int ep; 3350f002d200598918f5058dfcfda3da46f29019765Ben Dooks unsigned int addr; 3360f002d200598918f5058dfcfda3da46f29019765Ben Dooks unsigned int size; 3371703a6d3c38944731ba23594843a704d828266f3Ben Dooks int timeout; 3380f002d200598918f5058dfcfda3da46f29019765Ben Dooks u32 val; 3390f002d200598918f5058dfcfda3da46f29019765Ben Dooks 3406d091ee761992f804a1dcd411836ad0abb71be10Ben Dooks /* set FIFO sizes to 2048/1024 */ 3415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(2048, hsotg->regs + GRXFSIZ); 34347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel((2048 << FIFOSIZE_STARTADDR_SHIFT) | 34447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen (1024 << FIFOSIZE_DEPTH_SHIFT), hsotg->regs + GNPTXFSIZ); 3450f002d200598918f5058dfcfda3da46f29019765Ben Dooks 3468b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3478b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * arange all the rest of the TX FIFOs, as some versions of this 3480f002d200598918f5058dfcfda3da46f29019765Ben Dooks * block have overlapping default addresses. This also ensures 3490f002d200598918f5058dfcfda3da46f29019765Ben Dooks * that if the settings have been changed, then they are set to 3508b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * known values. 3518b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3520f002d200598918f5058dfcfda3da46f29019765Ben Dooks 3530f002d200598918f5058dfcfda3da46f29019765Ben Dooks /* start at the end of the GNPTXFSIZ, rounded up */ 3540f002d200598918f5058dfcfda3da46f29019765Ben Dooks addr = 2048 + 1024; 3550f002d200598918f5058dfcfda3da46f29019765Ben Dooks size = 768; 3560f002d200598918f5058dfcfda3da46f29019765Ben Dooks 3578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * currently we allocate TX FIFOs for all possible endpoints, 3598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * and assume that they are all the same size. 3608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3610f002d200598918f5058dfcfda3da46f29019765Ben Dooks 362f7a83fe19336125d7eb26488788dc66c03f2c08eAnton Tikhomirov for (ep = 1; ep <= 15; ep++) { 3630f002d200598918f5058dfcfda3da46f29019765Ben Dooks val = addr; 36447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val |= size << FIFOSIZE_DEPTH_SHIFT; 3650f002d200598918f5058dfcfda3da46f29019765Ben Dooks addr += size; 3660f002d200598918f5058dfcfda3da46f29019765Ben Dooks 36747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(val, hsotg->regs + DPTXFSIZN(ep)); 3680f002d200598918f5058dfcfda3da46f29019765Ben Dooks } 3691703a6d3c38944731ba23594843a704d828266f3Ben Dooks 3708b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3718b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * according to p428 of the design guide, we need to ensure that 3728b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * all fifos are flushed before continuing 3738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3741703a6d3c38944731ba23594843a704d828266f3Ben Dooks 37547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_TXFNUM(0x10) | GRSTCTL_TXFFLSH | 37647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GRSTCTL_RXFFLSH, hsotg->regs + GRSTCTL); 3771703a6d3c38944731ba23594843a704d828266f3Ben Dooks 3781703a6d3c38944731ba23594843a704d828266f3Ben Dooks /* wait until the fifos are both flushed */ 3791703a6d3c38944731ba23594843a704d828266f3Ben Dooks timeout = 100; 3801703a6d3c38944731ba23594843a704d828266f3Ben Dooks while (1) { 38194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(hsotg->regs + GRSTCTL); 3821703a6d3c38944731ba23594843a704d828266f3Ben Dooks 38347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((val & (GRSTCTL_TXFFLSH | GRSTCTL_RXFFLSH)) == 0) 3841703a6d3c38944731ba23594843a704d828266f3Ben Dooks break; 3851703a6d3c38944731ba23594843a704d828266f3Ben Dooks 3861703a6d3c38944731ba23594843a704d828266f3Ben Dooks if (--timeout == 0) { 3871703a6d3c38944731ba23594843a704d828266f3Ben Dooks dev_err(hsotg->dev, 3881703a6d3c38944731ba23594843a704d828266f3Ben Dooks "%s: timeout flushing fifos (GRSTCTL=%08x)\n", 3891703a6d3c38944731ba23594843a704d828266f3Ben Dooks __func__, val); 3901703a6d3c38944731ba23594843a704d828266f3Ben Dooks } 3911703a6d3c38944731ba23594843a704d828266f3Ben Dooks 3921703a6d3c38944731ba23594843a704d828266f3Ben Dooks udelay(1); 3931703a6d3c38944731ba23594843a704d828266f3Ben Dooks } 3941703a6d3c38944731ba23594843a704d828266f3Ben Dooks 3951703a6d3c38944731ba23594843a704d828266f3Ben Dooks dev_dbg(hsotg->dev, "FIFOs reset, timeout at %d\n", timeout); 3965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 3975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 3995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: USB endpoint to allocate request for. 4005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @flags: Allocation flags 4015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Allocate a new USB request structure appropriate for the specified endpoint 4035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 4040978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brownstatic struct usb_request *s3c_hsotg_ep_alloc_request(struct usb_ep *ep, 4050978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brown gfp_t flags) 4065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 4075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req; 4085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req = kzalloc(sizeof(struct s3c_hsotg_req), flags); 4105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) 4115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 4125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&req->queue); 4145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return &req->req; 4165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 4175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 4195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is_ep_periodic - return true if the endpoint is in periodic mode. 4205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to query. 4215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Returns true if the endpoint is in periodic mode, meaning it is being 4235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * used for an Interrupt or ISO transfer. 4245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 4255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline int is_ep_periodic(struct s3c_hsotg_ep *hs_ep) 4265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 4275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return hs_ep->periodic; 4285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 4295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 4315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_unmap_dma - unmap the DMA memory being used for the request 4325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 4335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint for the request 4345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request being processed. 4355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is the reverse of s3c_hsotg_map_dma(), called for the completion 4375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of a request to ensure the buffer is ready for access by the caller. 4388b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 4395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_unmap_dma(struct s3c_hsotg *hsotg, 4405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 4415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req) 4425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 4435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = &hs_req->req; 4445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* ignore this if we're not moving any data */ 4465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.length == 0) 4475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 4485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 44917d966a325a7ccfb5970839fb5b2ebb9e3909a6fJingoo Han usb_gadget_unmap_request(&hsotg->gadget, req, hs_ep->dir_in); 4505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 4515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 4535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_write_fifo - write packet Data to the TxFIFO 4545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The controller state. 4555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint we're going to write for. 4565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to write data for. 4575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is called when the TxFIFO has some space in it to hold a new 4595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transmission and we have something to give it. The actual setup of 4605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the data size is done elsewhere, so all we have to do is to actually 4615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * write the data. 4625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The return value is zero if there is more space (or nothing was done) 4645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * otherwise -ENOSPC is returned if the FIFO space was used up. 4655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This routine is only needed for PIO 4678b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 4685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg, 4695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 4705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req) 4715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 4725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool periodic = is_ep_periodic(hs_ep); 47394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gnptxsts = readl(hsotg->regs + GNPTXSTS); 4745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int buf_pos = hs_req->req.actual; 4755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int to_write = hs_ep->size_loaded; 4765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void *data; 4775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int can_write; 4785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int pkt_round; 4794fca54aa5829328a356aea31895b817dacba2861Robert Baldyga int max_transfer; 4805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write -= (buf_pos - hs_ep->last_load); 4825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if there's nothing to write, get out early */ 4845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write == 0) 4855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 4865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 48710aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (periodic && !hsotg->dedicated_fifos) { 48894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DIEPTSIZ(hs_ep->index)); 4895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_left; 4905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_done; 4915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * work out how much data was loaded so we can calculate 4948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * how much data is left in the fifo. 4958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 4965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 49747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 4985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4998b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 5008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if shared fifo, we cannot write anything until the 501e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks * previous data has been completely sent. 502e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks */ 503e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks if (hs_ep->fifo_load != 0) { 50447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_PTXFEMP); 505e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks return -ENOSPC; 506e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks } 507e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks 5085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: left=%d, load=%d, fifo=%d, size %d\n", 5095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, size_left, 5105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->size_loaded, hs_ep->fifo_load, hs_ep->fifo_size); 5115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* how much of the data has moved */ 5135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 5145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* how much data is left in the fifo */ 5165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = hs_ep->fifo_load - size_done; 5175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: => can_write1=%d\n", 5185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, can_write); 5195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = hs_ep->fifo_size - can_write; 5215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: => can_write2=%d\n", 5225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, can_write); 5235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (can_write <= 0) { 52547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_PTXFEMP); 5265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 5275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 52810aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks } else if (hsotg->dedicated_fifos && hs_ep->index != 0) { 52994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski can_write = readl(hsotg->regs + DTXFSTS(hs_ep->index)); 53010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 53110aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks can_write &= 0xffff; 53210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks can_write *= 4; 5335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 53447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (GNPTXSTS_NP_TXQ_SPC_AVAIL_GET(gnptxsts) == 0) { 5355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 5365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: no queue slots available (0x%08x)\n", 5375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, gnptxsts); 5385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 53947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_NPTXFEMP); 5405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 5415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 54347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen can_write = GNPTXSTS_NP_TXF_SPC_AVAIL_GET(gnptxsts); 544679f9b7c7c7d3c746792138e9d7d76578ef52c41Ben Dooks can_write *= 4; /* fifo size is in 32bit quantities. */ 5455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5474fca54aa5829328a356aea31895b817dacba2861Robert Baldyga max_transfer = hs_ep->ep.maxpacket * hs_ep->mc; 5484fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 5494fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_dbg(hsotg->dev, "%s: GNPTXSTS=%08x, can=%d, to=%d, max_transfer %d\n", 5504fca54aa5829328a356aea31895b817dacba2861Robert Baldyga __func__, gnptxsts, can_write, to_write, max_transfer); 5515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 5538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * limit to 512 bytes of data, it seems at least on the non-periodic 5545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * FIFO, requests of >512 cause the endpoint to get stuck with a 5555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * fragment of the end of the transfer in it. 5565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 557811f33033f9e6a00756e38990d82214c8c619f4cRobert Baldyga if (can_write > 512 && !periodic) 5585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = 512; 5595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 5618b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * limit the write to one max-packet size worth of data, but allow 56203e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks * the transfer to return that it did not run out of fifo space 5638b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * doing it. 5648b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 5654fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (to_write > max_transfer) { 5664fca54aa5829328a356aea31895b817dacba2861Robert Baldyga to_write = max_transfer; 56703e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks 5685cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga /* it's needed only when we do not use dedicated fifos */ 5695cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga if (!hsotg->dedicated_fifos) 5705cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga s3c_hsotg_en_gsint(hsotg, 57147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen periodic ? GINTSTS_PTXFEMP : 57247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_NPTXFEMP); 57303e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks } 57403e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks 5755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* see if we can write data */ 5765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write > can_write) { 5785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write = can_write; 5794fca54aa5829328a356aea31895b817dacba2861Robert Baldyga pkt_round = to_write % max_transfer; 5805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 5828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Round the write down to an 5835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * exact number of packets. 5845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 5855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, we do not currently check to see if we can ever 5865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * write a full packet or not to the FIFO. 5875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 5885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (pkt_round) 5905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write -= pkt_round; 5915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 5938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * enable correct FIFO interrupt to alert us when there 5948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * is more room left. 5958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 5965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5975cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga /* it's needed only when we do not use dedicated fifos */ 5985cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga if (!hsotg->dedicated_fifos) 5995cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga s3c_hsotg_en_gsint(hsotg, 60047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen periodic ? GINTSTS_PTXFEMP : 60147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_NPTXFEMP); 6025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 6035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "write %d/%d, can_write %d, done %d\n", 6055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write, hs_req->req.length, can_write, buf_pos); 6065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write <= 0) 6085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 6095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual = buf_pos + to_write; 6115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->total_data += to_write; 6125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (periodic) 6145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->fifo_load += to_write; 6155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write = DIV_ROUND_UP(to_write, 4); 6175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks data = hs_req->req.buf + buf_pos; 6185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6191a7ed5bec407478b9ce5e3267708110277851614Matt Porter iowrite32_rep(hsotg->regs + EPFIFO(hs_ep->index), data, to_write); 6205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return (to_write >= can_write) ? -ENOSPC : 0; 6225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 6235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 6255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * get_ep_limit - get the maximum data legnth for this endpoint 6265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint 6275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 6285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return the maximum data that can be queued in one go on a given endpoint 6295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so that transfers that are too long can be split. 6305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 6315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic unsigned get_ep_limit(struct s3c_hsotg_ep *hs_ep) 6325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 6335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 6345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxsize; 6355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxpkt; 6365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0) { 63847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxsize = DXEPTSIZ_XFERSIZE_LIMIT + 1; 63947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxpkt = DXEPTSIZ_PKTCNT_LIMIT + 1; 6405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 641b05ca580c39314c8527e2e1c36a823970cc01683Ben Dooks maxsize = 64+64; 64266e5c643488a26d2a6b737bdbd92fc72f13cdeacJingoo Han if (hs_ep->dir_in) 64347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxpkt = DIEPTSIZ0_PKTCNT_LIMIT + 1; 64466e5c643488a26d2a6b737bdbd92fc72f13cdeacJingoo Han else 6455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxpkt = 2; 6465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 6475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* we made the constant loading easier above by using +1 */ 6495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxpkt--; 6505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxsize--; 6515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * constrain by packet count if maxpkts*pktsize is greater 6548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * than the length register size. 6558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((maxpkt * hs_ep->ep.maxpacket) < maxsize) 6585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxsize = maxpkt * hs_ep->ep.maxpacket; 6595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return maxsize; 6615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 6625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 6645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_start_req - start a USB request from an endpoint's queue 6655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The controller state. 6665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to process a request for 6675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to start. 6685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @continuing: True if we are doing more for the current request. 6695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 6705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Start the given request running by setting the endpoint registers 6715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * appropriately, and writing any data to the FIFOs. 6725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 6735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_start_req(struct s3c_hsotg *hsotg, 6745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 6755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req, 6765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool continuing) 6775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 6785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *ureq = &hs_req->req; 6795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 6805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in = hs_ep->dir_in; 6815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 6825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epsize_reg; 6835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epsize; 6845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 6855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned length; 6865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned packets; 6875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxreq; 6885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0) { 6905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_ep->req && !continuing) { 6915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: active request\n", __func__); 6925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 6935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 6945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else if (hs_ep->req != hs_req && continuing) { 6955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, 6965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: continue different req\n", __func__); 6975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 6985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 6995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 7005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 7015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 70294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 70394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epsize_reg = dir_in ? DIEPTSIZ(index) : DOEPTSIZ(index); 7045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x, ep %d, dir %s\n", 7065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg), index, 7075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->dir_in ? "in" : "out"); 7085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7099c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* If endpoint is stalled, we will restart request later */ 7109c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov ctrl = readl(hsotg->regs + epctrl_reg); 7119c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 71247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ctrl & DXEPCTL_STALL) { 7139c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov dev_warn(hsotg->dev, "%s: ep%d is stalled\n", __func__, index); 7149c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return; 7159c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 7169c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 7175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks length = ureq->length - ureq->actual; 71871225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski dev_dbg(hsotg->dev, "ureq->length:%d ureq->actual:%d\n", 71971225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski ureq->length, ureq->actual); 7205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (0) 7215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 7228b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han "REQ buf %p len %d dma 0x%pad noi=%d zp=%d snok=%d\n", 7238b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han ureq->buf, length, &ureq->dma, 7245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ureq->no_interrupt, ureq->zero, ureq->short_not_ok); 7255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxreq = get_ep_limit(hs_ep); 7275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length > maxreq) { 7285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int round = maxreq % hs_ep->ep.maxpacket; 7295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: length %d, max-req %d, r %d\n", 7315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, length, maxreq, round); 7325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* round down to multiple of packets */ 7345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (round) 7355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxreq -= round; 7365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks length = maxreq; 7385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 7395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length) 7415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets = DIV_ROUND_UP(length, hs_ep->ep.maxpacket); 7425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 7435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets = 1; /* send one packet if length is zero. */ 7445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7454fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->isochronous && length > (hs_ep->mc * hs_ep->ep.maxpacket)) { 7464fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_err(hsotg->dev, "req length > maxpacket*mc\n"); 7474fca54aa5829328a356aea31895b817dacba2861Robert Baldyga return; 7484fca54aa5829328a356aea31895b817dacba2861Robert Baldyga } 7494fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 7505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in && index != 0) 7514fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->isochronous) 75247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize = DXEPTSIZ_MC(packets); 7534fca54aa5829328a356aea31895b817dacba2861Robert Baldyga else 75447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize = DXEPTSIZ_MC(1); 7555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 7565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epsize = 0; 7575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0 && ureq->zero) { 7598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 7608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * test for the packets being exactly right for the 7618b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transfer 7628b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 7635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length == (packets * hs_ep->ep.maxpacket)) 7655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets++; 7665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 7675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 76847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize |= DXEPTSIZ_PKTCNT(packets); 76947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize |= DXEPTSIZ_XFERSIZE(length); 7705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %d@%d/%d, 0x%08x => 0x%08x\n", 7725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, packets, length, ureq->length, epsize, epsize_reg); 7735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* store the request as the current one we're doing */ 7755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->req = hs_req; 7765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* write size / packets */ 7785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epsize, hsotg->regs + epsize_reg); 7795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 780db1d8ba36551bf55222c7961d9e9a1195a612fdeAnton Tikhomirov if (using_dma(hsotg) && !continuing) { 7815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int dma_reg; 7825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 7848b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * write DMA address to control register, buffer already 7858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * synced by s3c_hsotg_ep_queue(). 7868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 7875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 78894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dma_reg = dir_in ? DIEPDMA(index) : DOEPDMA(index); 7895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ureq->dma, hsotg->regs + dma_reg); 7905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7918b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han dev_dbg(hsotg->dev, "%s: 0x%pad => 0x%08x\n", 7928b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han __func__, &ureq->dma, dma_reg); 7935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 7945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 79547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ 79647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_USBACTEP; 79771225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 79871225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski dev_dbg(hsotg->dev, "setup req:%d\n", hsotg->setup); 79971225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 80071225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski /* For Setup request do not clear NAK */ 80171225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski if (hsotg->setup && index == 0) 80271225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski hsotg->setup = 0; 80371225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski else 80447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ 80571225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 8065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); 8085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ctrl, hsotg->regs + epctrl_reg); 8095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 8118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set these, it seems that DMA support increments past the end 8125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the packet buffer so we need to calculate the length from 8138b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * this information. 8148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 8155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->size_loaded = length; 8165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->last_load = ureq->actual; 8175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in && !using_dma(hsotg)) { 8195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* set these anyway, we may need them for non-periodic in */ 8205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->fifo_load = 0; 8215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); 8235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 8245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 8268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * clear the INTknTXFEmpMsk when we start request, more as a aide 8278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * to debugging to see what is going on. 8288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 8295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) 83047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DIEPMSK_INTKNTXFEMPMSK, 83194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DIEPINT(index)); 8325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8338b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 8348b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Note, trying to clear the NAK here causes problems with transmit 8358b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * on the S3C6400 ending up with the TXFIFO becoming full. 8368b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 8375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* check ep is enabled */ 83947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (!(readl(hsotg->regs + epctrl_reg) & DXEPCTL_EPENA)) 8405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, 84147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "ep%d: failed to become enabled (DXEPCTL=0x%08x)?\n", 8425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks index, readl(hsotg->regs + epctrl_reg)); 8435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 84447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dev_dbg(hsotg->dev, "%s: DXEPCTL=0x%08x\n", 8455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg)); 846afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga 847afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga /* enable ep interrupts */ 848afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 1); 8495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 8505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 8525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_map_dma - map the DMA memory being used for the request 8535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 8545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint the request is on. 8555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request being processed. 8565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 8575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We've been asked to queue a request, so ensure that the memory buffer 8585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is correctly setup for DMA. If we've been passed an extant DMA address 8595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * then ensure the buffer has been synced to memory. If our buffer has no 8605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * DMA memory, then we map the memory and mark our request to allow us to 8615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * cleanup on completion. 8628b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 8635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_map_dma(struct s3c_hsotg *hsotg, 8645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 8655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 8665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 868e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi int ret; 8695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if the length is zero, ignore the DMA data */ 8715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.length == 0) 8725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 8735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 874e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi ret = usb_gadget_map_request(&hsotg->gadget, req, hs_ep->dir_in); 875e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi if (ret) 876e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi goto dma_error; 8775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 8795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksdma_error: 8815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to map buffer %p, %d bytes\n", 8825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, req->buf, req->length); 8835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EIO; 8855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 8865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, 8885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks gfp_t gfp_flags) 8895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 8915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 8925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 8935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool first; 8945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n", 8965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->name, req, req->length, req->buf, req->no_interrupt, 8975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero, req->short_not_ok); 8985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* initialise status of the request */ 9005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_req->queue); 9015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->actual = 0; 9025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->status = -EINPROGRESS; 9035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if we're using DMA, sync the buffers as necessary */ 9055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hs)) { 9065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret = s3c_hsotg_map_dma(hs, hs_ep, req); 9075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) 9085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 9095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks first = list_empty(&hs_ep->queue); 9125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_add_tail(&hs_req->queue, &hs_ep->queue); 9135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (first) 9155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hs, hs_ep, hs_req, false); 9165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 9185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 9195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9205ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewskistatic int s3c_hsotg_ep_queue_lock(struct usb_ep *ep, struct usb_request *req, 9215ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski gfp_t gfp_flags) 9225ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski{ 9235ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg_ep *hs_ep = our_ep(ep); 9245ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg *hs = hs_ep->parent; 9255ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski unsigned long flags = 0; 9265ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski int ret = 0; 9275ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 9285ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hs->lock, flags); 9295ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski ret = s3c_hsotg_ep_queue(ep, req, gfp_flags); 9305ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 9315ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 9325ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski return ret; 9335ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski} 9345ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 9355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_ep_free_request(struct usb_ep *ep, 9365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 9375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 9385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 9395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kfree(hs_req); 9415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 9425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 9445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_oursetup - setup completion callback 9455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the request was on. 9465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request completed. 9475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 9485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Called on completion of any requests the driver itself 9495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * submitted that need cleaning up. 9505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 9515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_oursetup(struct usb_ep *ep, 9525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 9535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 9545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 9555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 9565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep %p, req %p\n", __func__, ep, req); 9585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_free_request(ep, req); 9605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 9615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 9635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * ep_from_windex - convert control wIndex value to endpoint 9645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 9655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @windex: The control request wIndex field (in host order). 9665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 9675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Convert the given wIndex into a pointer to an driver endpoint 9685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * structure, or return NULL if it is not a valid endpoint. 9698b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 9705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct s3c_hsotg_ep *ep_from_windex(struct s3c_hsotg *hsotg, 9715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 windex) 9725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 9735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[windex & 0x7F]; 9745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir = (windex & USB_DIR_IN) ? 1 : 0; 9755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx = windex & 0x7F; 9765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (windex >= 0x100) 9785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 9795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 980b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (idx > hsotg->num_of_eps) 9815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 9825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (idx && ep->dir_in != dir) 9845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 9855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ep; 9875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 9885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 9905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_send_reply - send reply to control request 9915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 9925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: Endpoint 0 9935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @buff: Buffer for request 9945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @length: Length of reply. 9955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 9965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Create a request and queue it on the given endpoint. This is useful as 9975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * an internal method of sending replies to certain control requests, etc. 9985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 9995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_send_reply(struct s3c_hsotg *hsotg, 10005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep, 10015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void *buff, 10025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int length) 10035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 10045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req; 10055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 10065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: buff %p, len %d\n", __func__, buff, length); 10085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req = s3c_hsotg_ep_alloc_request(&ep->ep, GFP_ATOMIC); 10105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->ep0_reply = req; 10115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) { 10125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: cannot alloc req\n", __func__); 10135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOMEM; 10145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 10155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->buf = hsotg->ep0_buff; 10175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->length = length; 10185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero = 1; /* always do zero-length final transfer */ 10195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->complete = s3c_hsotg_complete_oursetup; 10205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length) 10225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks memcpy(req->buf, buff, length); 10235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 10245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->sent_zlp = 1; 10255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_ep_queue(&ep->ep, req, GFP_ATOMIC); 10275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 10285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: cannot queue req\n", __func__); 10295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 10305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 10315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 10335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 10345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 10365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_req_status - process request GET_STATUS 10375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 10385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: USB control request 10395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 10405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_process_req_status(struct s3c_hsotg *hsotg, 10415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 10425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 10435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 10445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 10455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __le16 reply; 10465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 10475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: USB_REQ_GET_STATUS\n", __func__); 10495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep0->dir_in) { 10515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: direction out?\n", __func__); 10525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 10535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 10545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (ctrl->bRequestType & USB_RECIP_MASK) { 10565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_DEVICE: 10575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(0); /* bit 0 => self powered, 10585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * bit 1 => remote wakeup */ 10595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 10605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_INTERFACE: 10625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* currently, the data result should be zero */ 10635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(0); 10645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 10655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_ENDPOINT: 10675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); 10685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep) 10695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 10705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(ep->halted ? 1 : 0); 10725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 10735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 10755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 10765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 10775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (le16_to_cpu(ctrl->wLength) != 2) 10795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 10805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_send_reply(hsotg, ep0, &reply, 2); 10825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 10835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to send reply\n", __func__); 10845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 10855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 10865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 1; 10885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 10895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value); 10915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 10939c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * get_ep_head - return the first request on the endpoint 10949c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @hs_ep: The controller endpoint to get 10959c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * 10969c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * Get the first request on the endpoint. 10979c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 10989c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirovstatic struct s3c_hsotg_req *get_ep_head(struct s3c_hsotg_ep *hs_ep) 10999c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov{ 11009c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (list_empty(&hs_ep->queue)) 11019c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return NULL; 11029c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 11039c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return list_first_entry(&hs_ep->queue, struct s3c_hsotg_req, queue); 11049c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov} 11059c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 11069c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov/** 11075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_req_featire - process request {SET,CLEAR}_FEATURE 11085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 11095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: USB control request 11105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg, 11125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 11135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 111426ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 11159c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov struct s3c_hsotg_req *hs_req; 11169c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov bool restart; 11175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE); 11185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 111926ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov int ret; 1120bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga bool halted; 11215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %s_FEATURE\n", 11235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, set ? "SET" : "CLEAR"); 11245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ctrl->bRequestType == USB_RECIP_ENDPOINT) { 11265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); 11275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep) { 11285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: no endpoint for 0x%04x\n", 11295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, le16_to_cpu(ctrl->wIndex)); 11305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 11315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (le16_to_cpu(ctrl->wValue)) { 11345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_HALT: 1135bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga halted = ep->halted; 1136bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga 11375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_sethalt(&ep->ep, set); 113826ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov 113926ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); 114026ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov if (ret) { 114126ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov dev_err(hsotg->dev, 114226ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov "%s: failed to send reply\n", __func__); 114326ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov return ret; 114426ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov } 11459c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 1146bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga /* 1147bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga * we have to complete all requests for ep if it was 1148bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga * halted, and the halt was cleared by CLEAR_FEATURE 1149bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga */ 1150bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga 1151bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga if (!set && halted) { 11529c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* 11539c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * If we have request in progress, 11549c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * then complete it 11559c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 11569c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (ep->req) { 11579c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req = ep->req; 11589c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov ep->req = NULL; 11599c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov list_del_init(&hs_req->queue); 11609c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req->req.complete(&ep->ep, 11619c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov &hs_req->req); 11629c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 11639c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 11649c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* If we have pending request, then start it */ 11659c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov restart = !list_empty(&ep->queue); 11669c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (restart) { 11679c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req = get_ep_head(ep); 11689c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov s3c_hsotg_start_req(hsotg, ep, 11699c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req, false); 11709c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 11719c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 11729c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 11735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 11745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 11765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 11775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else 11795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; /* currently only deal with endpoint */ 11805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 1; 11825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 11835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1184ab93e014f35374a8169b0f465fccee69e04ea34cRobert Baldygastatic void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg); 1185d18f7116a5ddb8263fe62b05ad63e5ceb5875791Robert Baldygastatic void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg); 1186ab93e014f35374a8169b0f465fccee69e04ea34cRobert Baldyga 11875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1188c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * s3c_hsotg_stall_ep0 - stall ep0 1189c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * @hsotg: The device state 1190c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * 1191c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * Set stall for ep0 as response for setup request. 1192c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1193c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldygastatic void s3c_hsotg_stall_ep0(struct s3c_hsotg *hsotg) { 1194c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 1195c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga u32 reg; 1196c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga u32 ctrl; 1197c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1198c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in); 1199c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga reg = (ep0->dir_in) ? DIEPCTL0 : DOEPCTL0; 1200c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1201c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga /* 1202c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * DxEPCTL_Stall will be cleared by EP once it has 1203c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * taken effect, so no need to clear later. 1204c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1205c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1206c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga ctrl = readl(hsotg->regs + reg); 120747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_STALL; 120847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; 1209c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga writel(ctrl, hsotg->regs + reg); 1210c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1211c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_dbg(hsotg->dev, 121247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "written DXEPCTL=0x%08x to %08x (DXEPCTL=0x%08x)\n", 1213c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga ctrl, reg, readl(hsotg->regs + reg)); 1214c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1215c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga /* 1216c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * complete won't be called, so we enqueue 1217c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * setup request here 1218c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1219c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_enqueue_setup(hsotg); 1220c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga} 1221c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1222c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga/** 12235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_control - process a control request 12245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 12255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: The control request received 12265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The controller has received the SETUP phase of a control request, and 12285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * needs to work out what to do next (and whether to pass it on to the 12295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * gadget driver). 12305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 12315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_process_control(struct s3c_hsotg *hsotg, 12325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 12335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 12345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 12355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret = 0; 12365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 dcfg; 12375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->sent_zlp = 0; 12395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ctrl Req=%02x, Type=%02x, V=%04x, L=%04x\n", 12415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl->bRequest, ctrl->bRequestType, 12425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl->wValue, ctrl->wLength); 12435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12448b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12458b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * record the direction of the request, for later use when enquing 12468b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * packets onto EP0. 12478b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->dir_in = (ctrl->bRequestType & USB_DIR_IN) ? 1 : 0; 12505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ctrl: dir_in=%d\n", ep0->dir_in); 12515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we've no data with this request, then the last part of the 12548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transaction is going to implicitly be IN. 12558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ctrl->wLength == 0) 12575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->dir_in = 1; 12585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { 12605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (ctrl->bRequest) { 12615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_SET_ADDRESS: 1262d18f7116a5ddb8263fe62b05ad63e5ceb5875791Robert Baldyga s3c_hsotg_disconnect(hsotg); 126394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dcfg = readl(hsotg->regs + DCFG); 126447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dcfg &= ~DCFG_DEVADDR_MASK; 126547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dcfg |= ctrl->wValue << DCFG_DEVADDR_SHIFT; 126694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(dcfg, hsotg->regs + DCFG); 12675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "new address %d\n", ctrl->wValue); 12695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); 12715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 12725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_GET_STATUS: 12745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_process_req_status(hsotg, ctrl); 12755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 12765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_CLEAR_FEATURE: 12785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_SET_FEATURE: 12795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_process_req_feature(hsotg, ctrl); 12805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 12815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* as a fallback, try delivering it to the driver to deal with */ 12855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret == 0 && hsotg->driver) { 128793f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_unlock(&hsotg->lock); 12885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = hsotg->driver->setup(&hsotg->gadget, ctrl); 128993f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_lock(&hsotg->lock); 12905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) 12915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "driver->setup() ret %d\n", ret); 12925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the request is either unhandlable, or is not formatted correctly 12965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so respond with a STALL for the status stage to indicate failure. 12975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 12985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1299c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (ret < 0) 1300c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_stall_ep0(hsotg); 13015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 13025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 13045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_setup - completion of a setup transfer 13055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the request was on. 13065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request completed. 13075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Called on completion of any requests the driver itself submitted for 13095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * EP0 setup packets 13105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 13115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_setup(struct usb_ep *ep, 13125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 13135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 13145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 13155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 13165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->status < 0) { 13185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: failed %d\n", __func__, req->status); 13195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 132293f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_lock(&hsotg->lock); 13235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->actual == 0) 13245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 13255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 13265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_process_control(hsotg, req->buf); 132793f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_unlock(&hsotg->lock); 13285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 13295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 13315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_enqueue_setup - start a request for EP0 packets 13325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 13335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Enqueue a request on EP0 if necessary to received any SETUP packets 13355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * received from the host. 13365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 13375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg) 13385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 13395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = hsotg->ctrl_req; 13405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 13415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 13425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: queueing setup request\n", __func__); 13445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero = 0; 13465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->length = 8; 13475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->buf = hsotg->ctrl_buff; 13485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->complete = s3c_hsotg_complete_setup; 13495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!list_empty(&hs_req->queue)) { 13515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s already queued???\n", __func__); 13525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].dir_in = 0; 13565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_ep_queue(&hsotg->eps[0].ep, req, GFP_ATOMIC); 13585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 13595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed queue (%d)\n", __func__, ret); 13608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 13618b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Don't think there's much we can do other than watch the 13628b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * driver fail. 13638b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 13645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 13665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 13685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_request - complete a request given to us 13695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 13705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint the request was on. 13715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to complete. 13725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @result: The result code (0 => Ok, otherwise errno) 13735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The given request has finished, so call the necessary completion 13755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * if it has one and then look to see if we can start a new request 13765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on the endpoint. 13775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, expects the ep to already be locked as appropriate. 13798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 13805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg, 13815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 13825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req, 13835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result) 13845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 13855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool restart; 13865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 13885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: nothing to complete?\n", __func__); 13895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "complete: ep %p %s, req %p, %d => %p\n", 13935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep, hs_ep->ep.name, hs_req, result, hs_req->req.complete); 13945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 13968b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * only replace the status if we've not already set an error 13978b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * from a previous transaction 13988b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 13995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.status == -EINPROGRESS) 14015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.status = result; 14025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->req = NULL; 14045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_del_init(&hs_req->queue); 14055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) 14075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_unmap_dma(hsotg, hs_ep, hs_req); 14085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * call the complete request with the locks off, just in case the 14118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * request tries to queue more work for this endpoint. 14128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.complete) { 141522258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock(&hsotg->lock); 14165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.complete(&hs_ep->ep, &hs_req->req); 141722258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock(&hsotg->lock); 14185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Look to see if there is anything else to do. Note, the completion 14225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the previous request may have caused a new request to be started 14238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * so be careful when doing this. 14248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_ep->req && result >= 0) { 14275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks restart = !list_empty(&hs_ep->queue); 14285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (restart) { 14295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req = get_ep_head(hs_ep); 14305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, false); 14315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 14345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 14365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_rx_data - receive data from the FIFO for an endpoint 14375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 14385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep_idx: The endpoint index for the data 14395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @size: The size of data in the fifo, in bytes 14405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The FIFO status shows there is data to read from the FIFO for a given 14425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * endpoint, so sort out whether we need to read the data into a request 14435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that has been made for that endpoint. 14445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 14455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size) 14465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 14475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep_idx]; 14485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 144994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski void __iomem *fifo = hsotg->regs + EPFIFO(ep_idx); 14505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int to_read; 14515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int max_req; 14525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int read_ptr; 14535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 145422258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski 14555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 145694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epctl = readl(hsotg->regs + DOEPCTL(ep_idx)); 14575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ptr; 14585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, 146047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "%s: FIFO %d bytes on ep%d but no req (DXEPCTl=0x%08x)\n", 14615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, size, ep_idx, epctl); 14625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* dump the data from the FIFO, we've nothing we can do */ 14645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ptr = 0; ptr < size; ptr += 4) 14655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks (void)readl(fifo); 14665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 14685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_read = size; 14715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks read_ptr = hs_req->req.actual; 14725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks max_req = hs_req->req.length - read_ptr; 14735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1474a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks dev_dbg(hsotg->dev, "%s: read %d/%d, done %d/%d\n", 1475a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks __func__, to_read, max_req, read_ptr, hs_req->req.length); 1476a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks 14775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_read > max_req) { 14788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * more data appeared than we where willing 14805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to deal with in this request. 14815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 14825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* currently we don't deal this */ 14845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON_ONCE(1); 14855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->total_data += to_read; 14885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual += to_read; 14895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_read = DIV_ROUND_UP(to_read, 4); 14905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14918b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, we might over-write the buffer end by 3 bytes depending on 14938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * alignment of the data. 14948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14951a7ed5bec407478b9ce5e3267708110277851614Matt Porter ioread32_rep(fifo, hs_req->req.buf + read_ptr, to_read); 14965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 14975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 14995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_send_zlp - send zero-length packet on control endpoint 15005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 15015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request currently on this endpoint 15025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 15035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Generate a zero-length IN packet request for terminating a SETUP 15045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transaction. 15055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 15065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, since we don't write any data to the TxFIFO, then it is 150725985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * currently believed that we do not need to wait for any space in 15085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the TxFIFO. 15095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 15105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_send_zlp(struct s3c_hsotg *hsotg, 15115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req) 15125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 15135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 15145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) { 15165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: no request?\n", __func__); 15175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 15185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->req.length == 0) { 15215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].sent_zlp = 1; 15225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 15235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 15245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].dir_in = 1; 15275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].sent_zlp = 1; 15285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "sending zero-length packet\n"); 15305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* issue a zero-sized packet to terminate this */ 153247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | 153347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPTSIZ_XFERSIZE(0), hsotg->regs + DIEPTSIZ(0)); 15345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 153594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski ctrl = readl(hsotg->regs + DIEPCTL0); 153647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ 153747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ 153847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_USBACTEP; 153994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(ctrl, hsotg->regs + DIEPCTL0); 15405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 15415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 15435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_handle_outdone - handle receiving OutDone/SetupDone from RXFIFO 15445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 15455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @epnum: The endpoint received from 15465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @was_setup: Set if processing a SetupDone event. 15475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 15485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The RXFIFO has delivered an OutDone event, which means that the data 15495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transfer for an OUT endpoint has been completed, either by a short 15505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * packet or by the finish of a transfer. 15518b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 15525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg, 15535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum, bool was_setup) 15545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 155594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DOEPTSIZ(epnum)); 15565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[epnum]; 15575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 15585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = &hs_req->req; 155947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen unsigned size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 15605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result = 0; 15615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 15635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: no request active\n", __func__); 15645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 15655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) { 15685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned size_done; 15695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15708b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 15718b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Calculate the size of the transfer by checking how much 15725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is left in the endpoint size register and then working it 15735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * out from the amount we loaded for the transfer. 15745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 15755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We need to do this as DMA pointers are always 32bit aligned 15765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so may overshoot/undershoot the transfer. 15775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 15785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 15805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done += hs_ep->last_load; 15815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->actual = size_done; 15835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1585a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks /* if there is more request to do, schedule new transfer */ 1586a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks if (req->actual < req->length && size_left == 0) { 1587a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); 1588a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks return; 158971225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski } else if (epnum == 0) { 159071225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski /* 159171225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski * After was_setup = 1 => 159271225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski * set CNAK for non Setup requests 159371225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski */ 159471225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski hsotg->setup = was_setup ? 0 : 1; 1595a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks } 1596a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks 15975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->actual < req->length && req->short_not_ok) { 15985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: got %d/%d (short not ok) => error\n", 15995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, req->actual, req->length); 16005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16018b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 16028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * todo - what should we return here? there's no one else 16038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * even bothering to check the status. 16048b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 16055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 16065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum == 0) { 1608d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* 1609d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Condition req->complete != s3c_hsotg_complete_setup says: 1610d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * send ZLP when we have an asynchronous request from gadget 1611d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski */ 16125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!was_setup && req->complete != s3c_hsotg_complete_setup) 16135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_send_zlp(hsotg, hs_req); 16145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 16155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16165ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result); 16175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 16185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 16205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_read_frameno - read current frame number 16215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 16225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 16235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return the current frame number 16248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 16255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic u32 s3c_hsotg_read_frameno(struct s3c_hsotg *hsotg) 16265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 16275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 dsts; 16285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 162994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts = readl(hsotg->regs + DSTS); 163094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts &= DSTS_SOFFN_MASK; 163194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts >>= DSTS_SOFFN_SHIFT; 16325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return dsts; 16345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 16355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 16375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_handle_rx - RX FIFO has data 16385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 16395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 16405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The IRQ handler has detected that the RX FIFO has some data in it 16415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that requires processing, so find out what is in there and do the 16425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * appropriate read. 16435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 164425985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * The RXFIFO is a true FIFO, the packets coming out are still in packet 16455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * chunks, so if you have x packets received on an endpoint you'll get x 16465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * FIFO events delivered, each with a packet's worth of data in it. 16475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 16485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * When using DMA, we should not be processing events from the RXFIFO 16495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * as the actual data should be sent to the memory directly and we turn 16505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on the completion interrupts to get notifications of transfer completion. 16515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 16520978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brownstatic void s3c_hsotg_handle_rx(struct s3c_hsotg *hsotg) 16535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 165494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 grxstsr = readl(hsotg->regs + GRXSTSP); 16555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epnum, status, size; 16565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(using_dma(hsotg)); 16585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 165947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epnum = grxstsr & GRXSTS_EPNUM_MASK; 166047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen status = grxstsr & GRXSTS_PKTSTS_MASK; 16615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 166247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size = grxstsr & GRXSTS_BYTECNT_MASK; 166347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size >>= GRXSTS_BYTECNT_SHIFT; 16645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (1) 16665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: GRXSTSP=0x%08x (%d@%d)\n", 16675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, grxstsr, size, epnum); 16685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 166947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen switch ((status & GRXSTS_PKTSTS_MASK) >> GRXSTS_PKTSTS_SHIFT) { 167047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_GLOBALOUTNAK: 167147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dev_dbg(hsotg->dev, "GLOBALOUTNAK\n"); 16725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 16735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 167447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_OUTDONE: 16755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "OutDone (Frame=0x%08x)\n", 16765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg)); 16775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!using_dma(hsotg)) 16795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, epnum, false); 16805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 16815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 168247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_SETUPDONE: 16835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 16845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "SetupDone (Frame=0x%08x, DOPEPCTL=0x%08x)\n", 16855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg), 168694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL(0))); 16875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, epnum, true); 16895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 16905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 169147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_OUTRX: 16925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_rx_data(hsotg, epnum, size); 16935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 16945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 169547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_SETUPRX: 16965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 16975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "SetupRX (Frame=0x%08x, DOPEPCTL=0x%08x)\n", 16985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg), 169994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL(0))); 17005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_rx_data(hsotg, epnum, size); 17025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 17035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 17055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: unknown status %08x\n", 17065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, grxstsr); 17075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_dump(hsotg); 17095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 17105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 17115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 17125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 17145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ep0_mps - turn max packet size into register setting 17155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @mps: The maximum packet size in bytes. 17168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 17175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic u32 s3c_hsotg_ep0_mps(unsigned int mps) 17185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 17195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (mps) { 17205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 64: 172194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_64; 17225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 32: 172394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_32; 17245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 16: 172594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_16; 17265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 8: 172794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_8; 17285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 17295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* bad max packet size, warn and return invalid result */ 17315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 17325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return (u32)-1; 17335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 17345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 17365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_set_ep_maxpacket - set endpoint's max-packet field 17375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 17385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The index number of the endpoint 17395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @mps: The maximum packet size in bytes 17405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 17415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Configure the maximum packet size for the given endpoint, updating 17425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the hardware control registers to reflect this. 17435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 17445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg, 17455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int ep, unsigned int mps) 17465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 17475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep]; 17485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 17495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 mpsval; 17504fca54aa5829328a356aea31895b817dacba2861Robert Baldyga u32 mcval; 17515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 reg; 17525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep == 0) { 17545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* EP0 is a special case */ 17555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks mpsval = s3c_hsotg_ep0_mps(mps); 17565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (mpsval > 3) 17575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto bad_mps; 1758e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga hs_ep->ep.maxpacket = mps; 17594fca54aa5829328a356aea31895b817dacba2861Robert Baldyga hs_ep->mc = 1; 17605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 176147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen mpsval = mps & DXEPCTL_MPS_MASK; 1762e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga if (mpsval > 1024) 17635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto bad_mps; 17644fca54aa5829328a356aea31895b817dacba2861Robert Baldyga mcval = ((mps >> 11) & 0x3) + 1; 17654fca54aa5829328a356aea31895b817dacba2861Robert Baldyga hs_ep->mc = mcval; 17664fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (mcval > 3) 17674fca54aa5829328a356aea31895b817dacba2861Robert Baldyga goto bad_mps; 1768e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga hs_ep->ep.maxpacket = mpsval; 17695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 17705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17718b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 17728b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * update both the in and out endpoint controldir_ registers, even 17738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if one of the directions may not be in use. 17748b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 17755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 177694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski reg = readl(regs + DIEPCTL(ep)); 177747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen reg &= ~DXEPCTL_MPS_MASK; 17785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reg |= mpsval; 177994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(reg, regs + DIEPCTL(ep)); 17805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1781659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov if (ep) { 178294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski reg = readl(regs + DOEPCTL(ep)); 178347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen reg &= ~DXEPCTL_MPS_MASK; 1784659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov reg |= mpsval; 178594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(reg, regs + DOEPCTL(ep)); 1786659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov } 17875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 17895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksbad_mps: 17915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "ep%d: bad mps of %d\n", ep, mps); 17925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 17935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17949c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov/** 17959c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * s3c_hsotg_txfifo_flush - flush Tx FIFO 17969c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @hsotg: The driver state 17979c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @idx: The index for the endpoint (0..15) 17989c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 17999c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirovstatic void s3c_hsotg_txfifo_flush(struct s3c_hsotg *hsotg, unsigned int idx) 18009c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov{ 18019c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int timeout; 18029c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int val; 18039c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 180447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_TXFNUM(idx) | GRSTCTL_TXFFLSH, 180594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GRSTCTL); 18069c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 18079c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* wait until the fifo is flushed */ 18089c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov timeout = 100; 18099c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 18109c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov while (1) { 181194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(hsotg->regs + GRSTCTL); 18129c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 181347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((val & (GRSTCTL_TXFFLSH)) == 0) 18149c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov break; 18159c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 18169c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (--timeout == 0) { 18179c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov dev_err(hsotg->dev, 18189c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov "%s: timeout flushing fifo (GRSTCTL=%08x)\n", 18199c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov __func__, val); 18209c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18219c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 18229c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov udelay(1); 18239c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18249c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov} 18255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 18275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_trytx - check to see if anything needs transmitting 18285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 18295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The driver endpoint to check. 18305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 18315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Check to see if there is a request that has data to send, and if so 18325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * make an attempt to write data into the FIFO. 18335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 18345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_trytx(struct s3c_hsotg *hsotg, 18355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep) 18365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 18375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 18385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1839afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga if (!hs_ep->dir_in || !hs_req) { 1840afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga /** 1841afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga * if request is not enqueued, we disable interrupts 1842afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga * for endpoints, excepting ep0 1843afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga */ 1844afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga if (hs_ep->index != 0) 1845afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, 1846afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga hs_ep->dir_in, 0); 18475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 1848afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga } 18495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.actual < hs_req->req.length) { 18515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "trying to write more for ep%d\n", 18525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->index); 18535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); 18545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 18575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 18585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 18605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_in - complete IN transfer 18615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 18625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint that has just completed. 18635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 18645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * An IN transfer has been completed, update the transfer's state and then 18655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * call the relevant completion routines. 18665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 18675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg, 18685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep) 18695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 18705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 187194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DIEPTSIZ(hs_ep->index)); 18725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_left, size_done; 18735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 18755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "XferCompl but no req\n"); 18765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 18775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1879d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* Finish ZLP handling for IN EP0 transactions */ 1880d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski if (hsotg->eps[0].sent_zlp) { 1881d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "zlp packet received\n"); 18825ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); 1883d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski return; 1884d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski } 1885d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 18868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18878b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Calculate the size of the transfer by checking how much is left 18885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * in the endpoint size register and then working it out from 18895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the amount we loaded for the transfer. 18905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 18915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We do this even for DMA, as the transfer may have incremented 18925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * past the end of the buffer (DMA transfers are always 32bit 18935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * aligned). 18945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 18955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 189647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 18975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 18995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done += hs_ep->last_load; 19005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.actual != size_done) 19025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: adjusting size done %d => %d\n", 19035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, hs_req->req.actual, size_done); 19045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual = size_done; 1906d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "req->length:%d req->actual:%d req->zero:%d\n", 1907d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski hs_req->req.length, hs_req->req.actual, hs_req->req.zero); 1908d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 1909d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* 1910d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Check if dealing with Maximum Packet Size(MPS) IN transfer at EP0 1911d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * When sent data is a multiple MPS size (e.g. 64B ,128B ,192B 1912d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * ,256B ... ), after last MPS sized packet send IN ZLP packet to 1913d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * inform the host that no more data is available. 1914d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * The state of req.zero member is checked to be sure that the value to 1915d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * send is smaller than wValue expected from host. 1916d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Check req.length to NOT send another ZLP when the current one is 1917d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * under completion (the one for which this completion has been called). 1918d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski */ 1919d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski if (hs_req->req.length && hs_ep->index == 0 && hs_req->req.zero && 1920d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski hs_req->req.length == hs_req->req.actual && 1921d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski !(hs_req->req.length % hs_ep->ep.maxpacket)) { 1922d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 1923d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "ep0 zlp IN packet sent\n"); 1924d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski s3c_hsotg_send_zlp(hsotg, hs_req); 19255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1926d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski return; 1927d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski } 19285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!size_left && hs_req->req.actual < hs_req->req.length) { 19305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__); 19315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); 19325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else 19335ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); 19345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 19355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 19375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_epint - handle an in/out endpoint interrupt 19385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 19395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @idx: The index for the endpoint (0..15) 19405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @dir_in: Set if this is an IN endpoint 19415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 19425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Process and clear any interrupt pending for an individual endpoint 19438b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx, 19455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in) 19465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 19475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[idx]; 194894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epint_reg = dir_in ? DIEPINT(idx) : DOEPINT(idx); 194994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epctl_reg = dir_in ? DIEPCTL(idx) : DOEPCTL(idx); 195094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsiz_reg = dir_in ? DIEPTSIZ(idx) : DOEPTSIZ(idx); 19515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ints; 19521479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga u32 ctrl; 19535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ints = readl(hsotg->regs + epint_reg); 19551479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga ctrl = readl(hsotg->regs + epctl_reg); 19565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1957a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov /* Clear endpoint interrupts */ 1958a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov writel(ints, hsotg->regs + epint_reg); 1959a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 19605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep%d(%s) DxEPINT=0x%08x\n", 19615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx, dir_in ? "in" : "out", ints); 19625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 196347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_XFERCOMPL) { 19641479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (hs_ep->isochronous && hs_ep->interval == 1) { 196547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ctrl & DXEPCTL_EOFRNUM) 196647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SETEVENFR; 19671479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga else 196847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SETODDFR; 19691479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga writel(ctrl, hsotg->regs + epctl_reg); 19701479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga } 19711479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga 19725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 197347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "%s: XferCompl: DxEPCTL=0x%08x, DXEPTSIZ=%08x\n", 19745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctl_reg), 19755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks readl(hsotg->regs + epsiz_reg)); 19765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we get OutDone from the FIFO, so we only need to look 19798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * at completing IN requests here 19808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) { 19825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_in(hsotg, hs_ep); 19835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1984c9a64ea884b8b40d70077ffe1e93081f2190f072Ben Dooks if (idx == 0 && !hs_ep->req) 19855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 19865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else if (using_dma(hsotg)) { 19878b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19888b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * We're using DMA, we need to fire an OutDone here 19898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * as we ignore the RXFIFO. 19908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, idx, false); 19935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 19945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 19955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 199647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_EPDISBLD) { 19975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: EPDisbld\n", __func__); 19985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19999c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (dir_in) { 20009c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int epctl = readl(hsotg->regs + epctl_reg); 20019c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 20029c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov s3c_hsotg_txfifo_flush(hsotg, idx); 20039c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 200447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((epctl & DXEPCTL_STALL) && 200547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen (epctl & DXEPCTL_EPTYPE_BULK)) { 200694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski int dctl = readl(hsotg->regs + DCTL); 20079c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 200847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dctl |= DCTL_CGNPINNAK; 200994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(dctl, hsotg->regs + DCTL); 20109c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 20119c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 20129c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 20139c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 201447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_AHBERR) 20155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: AHBErr\n", __func__); 20165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 201747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_SETUP) { /* Setup or Timeout */ 20185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: Setup/Timeout\n", __func__); 20195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg) && idx == 0) { 20218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 20228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * this is the notification we've received a 20235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * setup packet. In non-DMA mode we'd get this 20245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * from the RXFIFO, instead we need to process 20258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the setup here. 20268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 20275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) 20295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON_ONCE(1); 20305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 20315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, 0, true); 20325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 20335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 20345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 203547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_BACK2BACKSETUP) 20365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: B2BSetup/INEPNakEff\n", __func__); 20375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20381479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (dir_in && !hs_ep->isochronous) { 20398b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* not sure if this is important, but we'll clear it anyway */ 204047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DIEPMSK_INTKNTXFEMPMSK) { 20415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep%d: INTknTXFEmpMsk\n", 20425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx); 20435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 20445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* this probably means something bad is happening */ 204647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DIEPMSK_INTKNEPMISMSK) { 20475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: ep%d: INTknEP\n", 20485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx); 20495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 205010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 205110aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks /* FIFO has space or is empty (see GAHBCFG) */ 205210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (hsotg->dedicated_fifos && 205347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ints & DIEPMSK_TXFIFOEMPTY) { 205410aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks dev_dbg(hsotg->dev, "%s: ep%d: TxFIFOEmpty\n", 205510aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks __func__, idx); 205670fa030ffb652ace81dd5bcab01255b49723caecAnton Tikhomirov if (!using_dma(hsotg)) 205770fa030ffb652ace81dd5bcab01255b49723caecAnton Tikhomirov s3c_hsotg_trytx(hsotg, hs_ep); 205810aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks } 20595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 20605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 20635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq_enumdone - Handle EnumDone interrupt (enumeration done) 20645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 20655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 20665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Handle updating the device settings after the enumeration phase has 20675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * been completed. 20688b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 20695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg) 20705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 207194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 dsts = readl(hsotg->regs + DSTS); 20725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep0_mps = 0, ep_mps; 20735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20748b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 20758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * This should signal the finish of the enumeration phase 20765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the USB handshaking, so we should now know what rate 20778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we connected at. 20788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 20795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "EnumDone (DSTS=0x%08x)\n", dsts); 20815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 20838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, since we're limited by the size of transfer on EP0, and 20845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * it seems IN transfers must be a even number of packets we do 20858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * not advertise a 64byte MPS on EP0. 20868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 20875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* catch both EnumSpd_FS and EnumSpd_FS48 */ 208947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen switch (dsts & DSTS_ENUMSPD_MASK) { 209047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_FS: 209147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_FS48: 20925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_FULL; 20935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0_mps = EP0_MPS_LIMIT; 2094295538ff7e5389d5aee5845c548f114b793d60c9Robert Baldyga ep_mps = 1023; 20955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 20965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 209747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_HS: 20985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_HIGH; 20995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0_mps = EP0_MPS_LIMIT; 2100295538ff7e5389d5aee5845c548f114b793d60c9Robert Baldyga ep_mps = 1024; 21015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 21025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 210347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_LS: 21045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_LOW; 21058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 21068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, we don't actually support LS in this driver at the 21075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * moment, and the documentation seems to imply that it isn't 21085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * supported by the PHYs on some of the devices. 21095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 21105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 21115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 2112e538dfdae85244fd2c4231725d82cc1f1bc4942cMichal Nazarewicz dev_info(hsotg->dev, "new device is %s\n", 2113e538dfdae85244fd2c4231725d82cc1f1bc4942cMichal Nazarewicz usb_speed_string(hsotg->gadget.speed)); 21145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21158b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 21168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we should now know the maximum packet size for an 21178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * endpoint, so set the endpoints to a default value. 21188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 21195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep0_mps) { 21215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int i; 21225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps); 2123b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (i = 1; i < hsotg->num_of_eps; i++) 21245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps); 21255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 21265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* ensure after enumeration our EP0 is active */ 21285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 21305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 213294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 213394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 21345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 21355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 21375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * kill_all_requests - remove all requests from the endpoint's queue 21385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 21395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the requests may be on. 21405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @result: The result code to use. 21415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @force: Force removal of any current requests 21425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 21435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Go through the requests on the given endpoint and mark them 21445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * completed with the given result code. 21455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 21465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void kill_all_requests(struct s3c_hsotg *hsotg, 21475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep, 21485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result, bool force) 21495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 21505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req, *treq; 21515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry_safe(req, treq, &ep->queue, queue) { 21538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 21548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * currently, we can't do much about an already 21558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * running request on an in endpoint 21568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 21575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep->req == req && ep->dir_in && !force) 21595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 21605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_request(hsotg, ep, req, 21625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks result); 21635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 2164b963a81a4803fb387d6551ea0fb66876e0c8ff12Robert Baldyga if(hsotg->dedicated_fifos) 2165b963a81a4803fb387d6551ea0fb66876e0c8ff12Robert Baldyga if ((readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4 < 3072) 2166b963a81a4803fb387d6551ea0fb66876e0c8ff12Robert Baldyga s3c_hsotg_txfifo_flush(hsotg, ep->index); 21675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 21685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#define call_gadget(_hs, _entry) \ 2170a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machekdo { \ 21715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \ 21725ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski (_hs)->driver && (_hs)->driver->_entry) { \ 21735ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock(&_hs->lock); \ 21745ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski (_hs)->driver->_entry(&(_hs)->gadget); \ 21755ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock(&_hs->lock); \ 2176a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek } \ 2177a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek} while (0) 21785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 21805e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * s3c_hsotg_disconnect - disconnect service 21815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 21825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 21835e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * The device has been disconnected. Remove all current 21845e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * transactions and signal the gadget driver that this 21855e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * has happened. 21868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 21875e891342fd0761fed36c187587115e706c0fa358Lukasz Majewskistatic void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg) 21885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 21895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned ep; 21905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2191b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (ep = 0; ep < hsotg->num_of_eps; ep++) 21925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kill_all_requests(hsotg, &hsotg->eps[ep], -ESHUTDOWN, true); 21935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, disconnect); 21955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 21965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 21975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 21985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq_fifoempty - TX FIFO empty interrupt handler 21995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state: 22005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @periodic: True if this is a periodic FIFO interrupt 22015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 22025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_irq_fifoempty(struct s3c_hsotg *hsotg, bool periodic) 22035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 22045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 22055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epno, ret; 22065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* look through for any more data to transmit */ 22085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2209b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epno = 0; epno < hsotg->num_of_eps; epno++) { 22105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = &hsotg->eps[epno]; 22115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep->dir_in) 22135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 22145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((periodic && !ep->periodic) || 22165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks (!periodic && ep->periodic)) 22175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 22185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_trytx(hsotg, ep); 22205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) 22215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 22225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 22245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* IRQ flags which will trigger a retry around the IRQ loop */ 222647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen#define IRQ_RETRY_MASK (GINTSTS_NPTXFEMP | \ 222747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_PTXFEMP | \ 222847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_RXFLVL) 22295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2231308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * s3c_hsotg_corereset - issue softreset to the core 2232308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * @hsotg: The device state 2233308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * 2234308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * Issue a soft reset to the core, and await the core finishing it. 22358b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2236308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewskistatic int s3c_hsotg_corereset(struct s3c_hsotg *hsotg) 2237308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski{ 2238308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski int timeout; 2239308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski u32 grstctl; 2240308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2241308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "resetting core\n"); 2242308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2243308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* issue soft reset */ 224447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_CSFTRST, hsotg->regs + GRSTCTL); 2245308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 22462868fea2d615d9f445a0ccaf988e1418a9787ebeDu, Changbin timeout = 10000; 2247308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski do { 224894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski grstctl = readl(hsotg->regs + GRSTCTL); 224947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen } while ((grstctl & GRSTCTL_CSFTRST) && timeout-- > 0); 2250308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 225147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (grstctl & GRSTCTL_CSFTRST) { 2252308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_err(hsotg->dev, "Failed to get CSftRst asserted\n"); 2253308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return -EINVAL; 2254308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2255308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 22562868fea2d615d9f445a0ccaf988e1418a9787ebeDu, Changbin timeout = 10000; 2257308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2258308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski while (1) { 225994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 grstctl = readl(hsotg->regs + GRSTCTL); 2260308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2261308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (timeout-- < 0) { 2262308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_info(hsotg->dev, 2263308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski "%s: reset failed, GRSTCTL=%08x\n", 2264308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski __func__, grstctl); 2265308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return -ETIMEDOUT; 2266308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2267308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 226847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (!(grstctl & GRSTCTL_AHBIDLE)) 2269308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski continue; 2270308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2271308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski break; /* reset done */ 2272308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2273308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2274308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "reset successful\n"); 2275308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return 0; 2276308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski} 2277308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 22788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 22798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_core_init - issue softreset to the core 22808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The device state 22818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 22828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Issue a soft reset to the core, and await the core finishing it. 22838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2284308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewskistatic void s3c_hsotg_core_init(struct s3c_hsotg *hsotg) 2285308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski{ 2286308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_corereset(hsotg); 2287308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2288308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2289308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * we must now enable ep0 ready for host detection and then 2290308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * set configuration. 2291308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2292308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2293308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* set the PLL on, remove the HNP/SRP and set the PHY */ 229447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(hsotg->phyif | GUSBCFG_TOUTCAL(7) | 229594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski (0x5 << 10), hsotg->regs + GUSBCFG); 2296308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2297308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_init_fifo(hsotg); 2298308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 229947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2300308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 230147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(1 << 18 | DCFG_DEVSPD_HS, hsotg->regs + DCFG); 2302308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2303308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Clear any pending OTG interrupts */ 230494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0xffffffff, hsotg->regs + GOTGINT); 2305308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2306308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Clear any pending interrupts */ 230794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0xffffffff, hsotg->regs + GINTSTS); 2308308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 230947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ERLYSUSP | GINTSTS_SESSREQINT | 231047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_GOUTNAKEFF | GINTSTS_GINNAKEFF | 231147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_CONIDSTSCHNG | GINTSTS_USBRST | 231247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_ENUMDONE | GINTSTS_OTGINT | 231347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_USBSUSP | GINTSTS_WKUPINT, 231447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + GINTMSK); 2315308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2316308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (using_dma(hsotg)) 231747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN | 231847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_HBSTLEN_INCR4, 231994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GAHBCFG); 2320308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski else 232147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(((hsotg->dedicated_fifos) ? (GAHBCFG_NP_TXF_EMP_LVL | 232247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_P_TXF_EMP_LVL) : 0) | 232347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_GLBL_INTR_EN, 23248acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga hsotg->regs + GAHBCFG); 2325308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2326308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 23278acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * If INTknTXFEmpMsk is enabled, it's important to disable ep interrupts 23288acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * when we have no data to transfer. Otherwise we get being flooded by 23298acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * interrupts. 2330308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2331308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 233247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(((hsotg->dedicated_fifos) ? DIEPMSK_TXFIFOEMPTY | 233347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_INTKNTXFEMPMSK : 0) | 233447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK | 233547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | 233647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_INTKNEPMISMSK, 233747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DIEPMSK); 2338308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2339308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2340308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * don't need XferCompl, we get that from RXFIFO in slave mode. In 2341308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * DMA mode we may need this. 2342308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 234347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel((using_dma(hsotg) ? (DIEPMSK_XFERCOMPLMSK | 234447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_TIMEOUTMSK) : 0) | 234547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_EPDISBLDMSK | DOEPMSK_AHBERRMSK | 234647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_SETUPMSK, 234747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DOEPMSK); 2348308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 234994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0, hsotg->regs + DAINTMSK); 2350308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2351308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 235294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 235394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 2354308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2355308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* enable in and out endpoint interrupts */ 235647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_OEPINT | GINTSTS_IEPINT); 2357308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2358308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2359308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * Enable the RXFIFO when in slave mode, as this is how we collect 2360308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * the data. In DMA mode, we get events from the FIFO but also 2361308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * things we cannot process, so do not use it. 2362308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2363308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (!using_dma(hsotg)) 236447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_RXFLVL); 2365308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2366308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Enable interrupts for EP0 in and out */ 2367308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_ctrl_epint(hsotg, 0, 0, 1); 2368308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_ctrl_epint(hsotg, 0, 1, 1); 2369308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 237047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); 2371308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski udelay(10); /* see openiboot */ 237247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __bic32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); 2373308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 237494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_dbg(hsotg->dev, "DCTL=0x%08x\n", readl(hsotg->regs + DCTL)); 2375308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2376308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 237794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski * DxEPCTL_USBActEp says RO in manual, but seems to be set by 2378308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * writing to the EPCTL register.. 2379308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2380308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2381308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* set to read 1 8byte packet */ 238247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | 238347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPTSIZ_XFERSIZE(8), hsotg->regs + DOEPTSIZ0); 2384308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2385308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | 238647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_CNAK | DXEPCTL_EPENA | 238747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_USBACTEP, 238894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DOEPCTL0); 2389308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2390308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* enable, but don't activate EP0in */ 2391308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | 239247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_USBACTEP, hsotg->regs + DIEPCTL0); 2393308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2394308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_enqueue_setup(hsotg); 2395308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2396308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 239794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 239894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 2399308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2400308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* clear global NAKs */ 240147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGOUTNAK | DCTL_CGNPINNAK, 240294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DCTL); 2403308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2404308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* must be at-least 3ms to allow bus to see disconnect */ 2405308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski mdelay(3); 2406308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2407308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* remove the soft-disconnect and let's go */ 240847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __bic32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2409308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski} 2410308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2411308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski/** 24125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq - handle device interrupt 24135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @irq: The IRQ number triggered 24145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @pw: The pw value when registered the handler. 24155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 24165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic irqreturn_t s3c_hsotg_irq(int irq, void *pw) 24175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 24185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = pw; 24195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int retry_count = 8; 24205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 gintsts; 24215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 gintmsk; 24225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24235ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock(&hsotg->lock); 24245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksirq_retry: 242594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski gintsts = readl(hsotg->regs + GINTSTS); 242694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski gintmsk = readl(hsotg->regs + GINTMSK); 24275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %08x %08x (%08x) retry %d\n", 24295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, gintsts, gintsts & gintmsk, gintmsk, retry_count); 24305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks gintsts &= gintmsk; 24325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 243347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_OTGINT) { 243494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 otgint = readl(hsotg->regs + GOTGINT); 24355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "OTGInt: %08x\n", otgint); 24375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 243894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(otgint, hsotg->regs + GOTGINT); 24395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 244147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_SESSREQINT) { 24425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: SessReqInt\n", __func__); 244347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_SESSREQINT, hsotg->regs + GINTSTS); 24445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 244647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_ENUMDONE) { 244747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ENUMDONE, hsotg->regs + GINTSTS); 2448a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2449a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_irq_enumdone(hsotg); 24505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 245247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_CONIDSTSCHNG) { 24535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ConIDStsChg (DSTS=0x%08x, GOTCTL=%08x)\n", 245494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DSTS), 245594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GOTGCTL)); 24565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 245747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_CONIDSTSCHNG, hsotg->regs + GINTSTS); 24585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 246047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & (GINTSTS_OEPINT | GINTSTS_IEPINT)) { 246194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 daint = readl(hsotg->regs + DAINT); 24627e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga u32 daintmsk = readl(hsotg->regs + DAINTMSK); 24637e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga u32 daint_out, daint_in; 24645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep; 24655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24667e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga daint &= daintmsk; 246747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen daint_out = daint >> DAINT_OUTEP_SHIFT; 246847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen daint_in = daint & ~(daint_out << DAINT_OUTEP_SHIFT); 24697e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga 24705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: daint=%08x\n", __func__, daint); 24715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ep = 0; ep < 15 && daint_out; ep++, daint_out >>= 1) { 24735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (daint_out & 1) 24745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_epint(hsotg, ep, 0); 24755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ep = 0; ep < 15 && daint_in; ep++, daint_in >>= 1) { 24785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (daint_in & 1) 24795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_epint(hsotg, ep, 1); 24805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 248347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_USBRST) { 248412a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski 248594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 usb_status = readl(hsotg->regs + GOTGCTL); 248612a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski 24875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "%s: USBRst\n", __func__); 24885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "GNPTXSTS=%08x\n", 248994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GNPTXSTS)); 24905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 249147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_USBRST, hsotg->regs + GINTSTS); 2492a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 249394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski if (usb_status & GOTGCTL_BSESVLD) { 249412a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski if (time_after(jiffies, hsotg->last_rst + 249512a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski msecs_to_jiffies(200))) { 24965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 249712a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski kill_all_requests(hsotg, &hsotg->eps[0], 249812a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski -ECONNRESET, true); 24995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 250012a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski s3c_hsotg_core_init(hsotg); 250112a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski hsotg->last_rst = jiffies; 250212a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski } 250312a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski } 25045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* check both FIFOs */ 25075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 250847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_NPTXFEMP) { 25095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "NPTxFEmp\n"); 25105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 25128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Disable the interrupt to stop it happening again 25135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * unless one of these endpoint routines decides that 25148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * it needs re-enabling 25158b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 25165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 251747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_disable_gsint(hsotg, GINTSTS_NPTXFEMP); 25185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_irq_fifoempty(hsotg, false); 25195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 252147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_PTXFEMP) { 25225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "PTxFEmp\n"); 25235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 252494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski /* See note in GINTSTS_NPTxFEmp */ 25255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 252647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_disable_gsint(hsotg, GINTSTS_PTXFEMP); 25275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_irq_fifoempty(hsotg, true); 25285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 253047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_RXFLVL) { 25318b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 25328b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, since GINTSTS_RxFLvl doubles as FIFO-not-empty, 25335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * we need to retry s3c_hsotg_handle_rx if this is still 25348b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set. 25358b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 25365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_rx(hsotg); 25385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 254047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_MODEMIS) { 25415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "warning, mode mismatch triggered\n"); 254247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_MODEMIS, hsotg->regs + GINTSTS); 25435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 254547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_USBSUSP) { 254694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_info(hsotg->dev, "GINTSTS_USBSusp\n"); 254747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_USBSUSP, hsotg->regs + GINTSTS); 25485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, suspend); 25505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 255247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_WKUPINT) { 255394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_info(hsotg->dev, "GINTSTS_WkUpIn\n"); 255447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_WKUPINT, hsotg->regs + GINTSTS); 25555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, resume); 25575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 255947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_ERLYSUSP) { 256094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_dbg(hsotg->dev, "GINTSTS_ErlySusp\n"); 256147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ERLYSUSP, hsotg->regs + GINTSTS); 25625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25648b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 25658b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * these next two seem to crop-up occasionally causing the core 25665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to shutdown the USB transfer, so try clearing them and logging 25678b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the occurrence. 25688b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 25695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 257047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_GOUTNAKEFF) { 25715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "GOUTNakEff triggered\n"); 25725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 257347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGOUTNAK, hsotg->regs + DCTL); 2574a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2575a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_dump(hsotg); 25765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 257847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_GINNAKEFF) { 25795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "GINNakEff triggered\n"); 25805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 258147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGNPINNAK, hsotg->regs + DCTL); 2582a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2583a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_dump(hsotg); 25845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 25878b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we've had fifo events, we should try and go around the 25888b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * loop again to see if there's any point in returning yet. 25898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 25905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (gintsts & IRQ_RETRY_MASK && --retry_count > 0) 25925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto irq_retry; 25935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25945ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock(&hsotg->lock); 25955ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 25965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return IRQ_HANDLED; 25975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 25985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 26005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ep_enable - enable the given endpoint 26015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The USB endpint to configure 26025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @desc: The USB endpoint descriptor to configure with. 26035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 26045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is called from the USB gadget code's usb_ep_enable(). 26058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_enable(struct usb_ep *ep, 26075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks const struct usb_endpoint_descriptor *desc) 26085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 26105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 26115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 26125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 26135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 26145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl; 26155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 mps; 26165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in; 261719c190f9e0fe926db28122a804111a7538dc3498Julia Lawall int ret = 0; 26185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 26205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: ep %s: a 0x%02x, attr 0x%02x, mps 0x%04x, intr %d\n", 26215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, ep->name, desc->bEndpointAddress, desc->bmAttributes, 26225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks desc->wMaxPacketSize, desc->bInterval); 26235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* not to be called for EP0 */ 26255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(index == 0); 26265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0; 26285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in != hs_ep->dir_in) { 26295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: direction mismatch!\n", __func__); 26305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 26315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 26325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 263329cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto mps = usb_endpoint_maxp(desc); 26345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* note, we handle this here instead of s3c_hsotg_set_ep_maxpacket */ 26365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 263794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 26385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctrl = readl(hsotg->regs + epctrl_reg); 26395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x from 0x%08x\n", 26415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, epctrl, epctrl_reg); 26425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 264322258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 26445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 264547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl &= ~(DXEPCTL_EPTYPE_MASK | DXEPCTL_MPS_MASK); 264647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_MPS(mps); 26475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26488b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 26498b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * mark the endpoint as active, otherwise the core may ignore 26508b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transactions entirely for this endpoint 26518b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 265247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_USBACTEP; 26535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 26558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set the NAK status on the endpoint, otherwise we might try and 26565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * do something with data that we've yet got a request to process 26575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * since the RXFIFO will take data for an endpoint even if the 26585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * size register hasn't been set. 26595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 26605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 266147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SNAK; 26625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* update the endpoint state */ 2664e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga s3c_hsotg_set_ep_maxpacket(hsotg, hs_ep->index, mps); 26655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* default, set to non-periodic */ 26671479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->isochronous = 0; 26685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->periodic = 0; 2669a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga hs_ep->halted = 0; 26701479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->interval = desc->bInterval; 26715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26724fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->interval > 1 && hs_ep->mc > 1) 26734fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_err(hsotg->dev, "MC > 1 when interval is not 1\n"); 26744fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 26755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { 26765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_ISOC: 267747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_ISO; 267847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SETEVENFR; 26791479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->isochronous = 1; 26801479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (dir_in) 26811479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->periodic = 1; 26821479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga break; 26835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_BULK: 268547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_BULK; 26865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 26875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_INT: 26895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) { 26908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 26918b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Allocate our TxFNum by simply using the index 26925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the endpoint for the moment. We could do 26935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * something better if the host indicates how 26948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * many FIFOs we are expecting to use. 26958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->periodic = 1; 269847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_TXFNUM(index); 26995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 27005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 270147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_INTERRUPT; 27025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 27035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_CONTROL: 270547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_CONTROL; 27065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 27075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 27085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 27108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if the hardware has dedicated fifos, we must give each IN EP 271110aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks * a unique tx-fifo even if it is non-periodic. 271210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks */ 271310aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (dir_in && hsotg->dedicated_fifos) 271447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_TXFNUM(index); 271510aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 27165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* for non control endpoints, set PID to D0 */ 27175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index) 271847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SETD0PID; 27195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: write DxEPCTL=0x%08x\n", 27215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, epctrl); 27225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctrl, hsotg->regs + epctrl_reg); 27245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x\n", 27255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg)); 27265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* enable the endpoint interrupt */ 27285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1); 27295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 273022258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 273119c190f9e0fe926db28122a804111a7538dc3498Julia Lawall return ret; 27325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 27335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27348b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 27358b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_disable - disable given endpoint 27368b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to disable. 27378b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 27385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_disable(struct usb_ep *ep) 27395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 27405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 27415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 27425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in = hs_ep->dir_in; 27435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 27445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 27455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 27465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 27475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "%s(ep %p)\n", __func__, ep); 27495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep == &hsotg->eps[0].ep) { 27515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: called for ep0\n", __func__); 27525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 27535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 27545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 275594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 27565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27575ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 27585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* terminate all requests with shutdown */ 27595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, false); 27605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl = readl(hsotg->regs + epctrl_reg); 276347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl &= ~DXEPCTL_EPENA; 276447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl &= ~DXEPCTL_USBACTEP; 276547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SNAK; 27665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); 27685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ctrl, hsotg->regs + epctrl_reg); 27695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* disable endpoint interrupts */ 27715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0); 27725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 277322258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 27745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 27755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 27765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 27785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on_list - check request is on the given endpoint 27795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint to check. 27805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @test: The request to test if it is on the endpoint. 27818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 27825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic bool on_list(struct s3c_hsotg_ep *ep, struct s3c_hsotg_req *test) 27835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 27845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req, *treq; 27855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry_safe(req, treq, &ep->queue, queue) { 27875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req == test) 27885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return true; 27895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 27905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return false; 27925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 27935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 27958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_dequeue - dequeue given endpoint 27968b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to dequeue. 27978b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @req: The request to be removed from a queue. 27988b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 27995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) 28005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 28015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 28025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 28035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 28045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 28055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hs->dev, "ep_dequeue(%p,%p)\n", ep, req); 28075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 280822258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hs->lock, flags); 28095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!on_list(hs_ep, hs_req)) { 281122258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 28125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 28135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_request(hs, hs_ep, hs_req, -ECONNRESET); 281622258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 28175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 28195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 28205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 28228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_sethalt - set halt on a given endpoint 28238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to set halt. 28248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @value: Set or unset the halt. 28258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 28265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value) 28275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 28285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 28295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 28305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 28315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epreg; 28325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctl; 28339c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov u32 xfertype; 28345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value); 28365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2837c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (index == 0) { 2838c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (value) 2839c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_stall_ep0(hs); 2840c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga else 2841c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_warn(hs->dev, 2842c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga "%s: can't clear halt on ep0\n", __func__); 2843c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga return 0; 2844c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga } 2845c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 28465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* write both IN and OUT control registers */ 28475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 284894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epreg = DIEPCTL(index); 28495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctl = readl(hs->regs + epreg); 28505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28519c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (value) { 285247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_STALL + DXEPCTL_SNAK; 285347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (epctl & DXEPCTL_EPENA) 285447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_EPDIS; 28559c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } else { 285647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl &= ~DXEPCTL_STALL; 285747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype = epctl & DXEPCTL_EPTYPE_MASK; 285847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (xfertype == DXEPCTL_EPTYPE_BULK || 285947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype == DXEPCTL_EPTYPE_INTERRUPT) 286047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_SETD0PID; 28619c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 28625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctl, hs->regs + epreg); 28645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 286594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epreg = DOEPCTL(index); 28665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctl = readl(hs->regs + epreg); 28675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (value) 286947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_STALL; 28709c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov else { 287147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl &= ~DXEPCTL_STALL; 287247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype = epctl & DXEPCTL_EPTYPE_MASK; 287347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (xfertype == DXEPCTL_EPTYPE_BULK || 287447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype == DXEPCTL_EPTYPE_INTERRUPT) 287547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_SETD0PID; 28769c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 28775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctl, hs->regs + epreg); 28795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2880a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga hs_ep->halted = value; 2881a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga 28825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 28835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 28845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28855ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski/** 28865ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * s3c_hsotg_ep_sethalt_lock - set halt on a given endpoint with lock held 28875ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * @ep: The endpoint to set halt. 28885ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * @value: Set or unset the halt. 28895ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski */ 28905ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewskistatic int s3c_hsotg_ep_sethalt_lock(struct usb_ep *ep, int value) 28915ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski{ 28925ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg_ep *hs_ep = our_ep(ep); 28935ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg *hs = hs_ep->parent; 28945ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski unsigned long flags = 0; 28955ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski int ret = 0; 28965ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 28975ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hs->lock, flags); 28985ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski ret = s3c_hsotg_ep_sethalt(ep, value); 28995ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 29005ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 29015ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski return ret; 29025ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski} 29035ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 29045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct usb_ep_ops s3c_hsotg_ep_ops = { 29055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .enable = s3c_hsotg_ep_enable, 29065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .disable = s3c_hsotg_ep_disable, 29075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .alloc_request = s3c_hsotg_ep_alloc_request, 29085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .free_request = s3c_hsotg_ep_free_request, 29095ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski .queue = s3c_hsotg_ep_queue_lock, 29105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .dequeue = s3c_hsotg_ep_dequeue, 29115ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski .set_halt = s3c_hsotg_ep_sethalt_lock, 291225985edcedea6396277003854657b5f3cb31a628Lucas De Marchi /* note, don't believe we have any call for the fifo routines */ 29135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 29145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 29164118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * s3c_hsotg_phy_enable - enable platform phy dev 29178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 29184118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * 29194118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * A wrapper for platform code responsible for controlling 29204118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * low-level USB code 29214118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski */ 29224118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewskistatic void s3c_hsotg_phy_enable(struct s3c_hsotg *hsotg) 29234118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski{ 29244118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski struct platform_device *pdev = to_platform_device(hsotg->dev); 29254118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 29264118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski dev_dbg(hsotg->dev, "pdev 0x%p\n", pdev); 2927b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri 292874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) { 292974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_init(hsotg->phy); 293074084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_power_on(hsotg->phy); 293174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else if (hsotg->uphy) 293274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter usb_phy_init(hsotg->uphy); 2933b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri else if (hsotg->plat->phy_init) 29344118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski hsotg->plat->phy_init(pdev, hsotg->plat->phy_type); 29354118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski} 29364118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 29374118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski/** 29384118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * s3c_hsotg_phy_disable - disable platform phy dev 29398b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 29404118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * 29414118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * A wrapper for platform code responsible for controlling 29424118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * low-level USB code 29434118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski */ 29444118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewskistatic void s3c_hsotg_phy_disable(struct s3c_hsotg *hsotg) 29454118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski{ 29464118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski struct platform_device *pdev = to_platform_device(hsotg->dev); 29474118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 294874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) { 294974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_power_off(hsotg->phy); 295074084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_exit(hsotg->phy); 295174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else if (hsotg->uphy) 295274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter usb_phy_shutdown(hsotg->uphy); 2953b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri else if (hsotg->plat->phy_exit) 29544118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type); 29554118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski} 29564118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 29578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 29588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_init - initalize the usb core 29598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 29608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2961b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewskistatic void s3c_hsotg_init(struct s3c_hsotg *hsotg) 2962b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski{ 2963b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* unmask subset of endpoint interrupts */ 2964b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 296547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | 296647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK, 296747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DIEPMSK); 2968b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 296947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DOEPMSK_SETUPMSK | DOEPMSK_AHBERRMSK | 297047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_EPDISBLDMSK | DOEPMSK_XFERCOMPLMSK, 297147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DOEPMSK); 2972b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 297394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0, hsotg->regs + DAINTMSK); 2974b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2975b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* Be in disconnected state until gadget is registered */ 297647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2977b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2978b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (0) { 2979b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* post global nak until we're ready */ 298047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_SGNPINNAK | DCTL_SGOUTNAK, 298194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DCTL); 2982b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 2983b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2984b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* setup fifos */ 2985b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2986b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_dbg(hsotg->dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", 298794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GRXFSIZ), 298894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GNPTXFSIZ)); 2989b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2990b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski s3c_hsotg_init_fifo(hsotg); 2991b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2992b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* set the PLL on, remove the HNP/SRP and set the PHY */ 299347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GUSBCFG_PHYIF16 | GUSBCFG_TOUTCAL(7) | (0x5 << 10), 299494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GUSBCFG); 2995b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 299647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(using_dma(hsotg) ? GAHBCFG_DMA_EN : 0x0, 299794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GAHBCFG); 2998b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski} 2999b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 30008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 30018b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_udc_start - prepare the udc for work 30028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 30038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @driver: The usb gadget driver 30048b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 30058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Perform initialization to prepare udc device and driver 30068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * to work. 30078b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3008f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewskistatic int s3c_hsotg_udc_start(struct usb_gadget *gadget, 3009f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski struct usb_gadget_driver *driver) 30105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3011f99b2bfebe8984db2b6e4c07e2bedc91977d27d8Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 30125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 30135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hsotg) { 3015a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek pr_err("%s: called with no device\n", __func__); 30165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENODEV; 30175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!driver) { 30205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: no driver\n", __func__); 30215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 30225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30247177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (driver->max_speed < USB_SPEED_FULL) 30255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: bad speed\n", __func__); 30265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3027f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (!driver->setup) { 30285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: missing entry points\n", __func__); 30295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 30305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(hsotg->driver); 30335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks driver->driver.bus = NULL; 30355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->driver = driver; 30367d7b22928b900bcb0f8885a95846e5125a757e76Alexandre Pereira da Silva hsotg->gadget.dev.of_node = hsotg->dev->of_node; 30375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_UNKNOWN; 30385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3039f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 3040f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski hsotg->supplies); 30415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 3042f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski dev_err(hsotg->dev, "failed to enable supplies: %d\n", ret); 30435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto err; 30445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 304612a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski hsotg->last_rst = jiffies; 30475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); 30485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 30495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dookserr: 30515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->driver = NULL; 30525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 30535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 30545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 30568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_udc_stop - stop the udc 30578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 30588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @driver: The usb gadget driver 30598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 30608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Stop udc hw block and stay tunned for future transmissions 30618b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3062f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewskistatic int s3c_hsotg_udc_stop(struct usb_gadget *gadget, 3063f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski struct usb_gadget_driver *driver) 30645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3065f99b2bfebe8984db2b6e4c07e2bedc91977d27d8Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 30662b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski unsigned long flags = 0; 30675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep; 30685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hsotg) 30705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENODEV; 30715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* all endpoints should be shutdown */ 3073b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (ep = 0; ep < hsotg->num_of_eps; ep++) 30745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); 30755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30762b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 30772b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski 3078f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 30795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3080c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski if (!driver) 3081c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski hsotg->driver = NULL; 3082c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski 30835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_UNKNOWN; 30845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30852b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 30862b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski 3087c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); 30885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 30905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 30915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 30938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_gadget_getframe - read the frame number 30948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 30958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 30968b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Read the {micro} frame number 30978b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 30985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget) 30995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return s3c_hsotg_read_frameno(to_hsotg(gadget)); 31015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 31025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3103a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski/** 3104a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * s3c_hsotg_pullup - connect/disconnect the USB PHY 3105a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * @gadget: The usb gadget state 3106a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * @is_on: Current state of the USB PHY 3107a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * 3108a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * Connect/Disconnect the USB PHY pullup 3109a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski */ 3110a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewskistatic int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) 3111a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski{ 3112a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 3113a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski unsigned long flags = 0; 3114a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 3115a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski dev_dbg(hsotg->dev, "%s: is_in: %d\n", __func__, is_on); 3116a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 3117a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 3118a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski if (is_on) { 3119a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_phy_enable(hsotg); 3120a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_core_init(hsotg); 3121a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski } else { 3122a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_disconnect(hsotg); 3123a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 3124a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski } 3125a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 3126a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski hsotg->gadget.speed = USB_SPEED_UNKNOWN; 3127a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 3128a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 3129a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski return 0; 3130a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski} 3131a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 3132eeef45876631a446eaedce16675f4ff344e16cf0Felipe Balbistatic const struct usb_gadget_ops s3c_hsotg_gadget_ops = { 31335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .get_frame = s3c_hsotg_gadget_getframe, 3134f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski .udc_start = s3c_hsotg_udc_start, 3135f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski .udc_stop = s3c_hsotg_udc_stop, 3136a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski .pullup = s3c_hsotg_pullup, 31375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 31385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 31405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_initep - initialise a single endpoint 31415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 31425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to be initialised. 31435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @epnum: The endpoint number 31445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 31455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Initialise the given endpoint (as part of the probe and device state 31465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * creation) to give to the gadget driver. Setup the endpoint name, any 31475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * direction information and other state that may be required. 31485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 314941ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic void s3c_hsotg_initep(struct s3c_hsotg *hsotg, 31505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 31515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum) 31525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ptxfifo; 31545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks char *dir; 31555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum == 0) 31575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = ""; 31585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else if ((epnum % 2) == 0) { 31595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = "out"; 31605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 31615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = "in"; 31625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->dir_in = 1; 31635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 31645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->index = epnum; 31665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks snprintf(hs_ep->name, sizeof(hs_ep->name), "ep%d%s", epnum, dir); 31685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_ep->queue); 31705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_ep->ep.ep_list); 31715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* add to the list of endpoints known by the gadget driver */ 31735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum) 31745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_add_tail(&hs_ep->ep.ep_list, &hsotg->gadget.ep_list); 31755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->parent = hsotg; 31775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->ep.name = hs_ep->name; 3178e117e742d310683b410951faeab4b13b6c3c609fRobert Baldyga usb_ep_set_maxpacket_limit(&hs_ep->ep, epnum ? 1024 : EP0_MPS_LIMIT); 31795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->ep.ops = &s3c_hsotg_ep_ops; 31805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 31828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Read the FIFO size for the Periodic TX FIFO, even if we're 31835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * an OUT endpoint, we may as well do this if in future the 31845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * code is changed to make each endpoint's direction changeable. 31855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 31865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 318747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ptxfifo = readl(hsotg->regs + DPTXFSIZN(epnum)); 318847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hs_ep->fifo_size = FIFOSIZE_DEPTH_GET(ptxfifo) * 4; 31895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 31918b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we're using dma, we need to set the next-endpoint pointer 31925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to be something valid. 31935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 31945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) { 319647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen u32 next = DXEPCTL_NEXTEP((epnum + 1) % 15); 319794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(next, hsotg->regs + DIEPCTL(epnum)); 319894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(next, hsotg->regs + DOEPCTL(epnum)); 31995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3202b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski/** 3203b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * s3c_hsotg_hw_cfg - read HW configuration registers 3204b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * @param: The device state 3205b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * 3206b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * Read the USB core HW configuration registers 3207b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski */ 3208b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewskistatic void s3c_hsotg_hw_cfg(struct s3c_hsotg *hsotg) 32095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3210b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski u32 cfg2, cfg4; 3211b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* check hardware configuration */ 32125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3213b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski cfg2 = readl(hsotg->regs + 0x48); 3214b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->num_of_eps = (cfg2 >> 10) & 0xF; 321510aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 3216b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_info(hsotg->dev, "EPs:%d\n", hsotg->num_of_eps); 321710aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 321810aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks cfg4 = readl(hsotg->regs + 0x50); 321910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks hsotg->dedicated_fifos = (cfg4 >> 25) & 1; 322010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 322110aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks dev_info(hsotg->dev, "%s fifos\n", 322210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks hsotg->dedicated_fifos ? "dedicated" : "shared"); 32235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 32268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_dump - dump state of the udc 32278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @param: The device state 32288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 32295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_dump(struct s3c_hsotg *hsotg) 32305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 323183a018045659ee2cc9b1390ddb8b2a247d269bc4Mark Brown#ifdef DEBUG 32325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct device *dev = hsotg->dev; 32335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 32345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 val; 32355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 32365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DCFG=0x%08x, DCTL=0x%08x, DIEPMSK=%08x\n", 323894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCFG), readl(regs + DCTL), 323994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPMSK)); 32405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "GAHBCFG=0x%08x, 0x44=0x%08x\n", 324294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GAHBCFG), readl(regs + 0x44)); 32435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", 324594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GRXFSIZ), readl(regs + GNPTXFSIZ)); 32465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* show periodic fifo settings */ 32485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 1; idx <= 15; idx++) { 325047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val = readl(regs + DPTXFSIZN(idx)); 32515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DPTx[%d] FSize=%d, StAddr=0x%08x\n", idx, 325247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 325347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_STARTADDR_MASK); 32545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 0; idx < 15; idx++) { 32575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, 32585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "ep%d-in: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", idx, 325994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPCTL(idx)), 326094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPTSIZ(idx)), 326194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPDMA(idx))); 32625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 326394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(regs + DOEPCTL(idx)); 32645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, 32655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "ep%d-out: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", 326694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski idx, readl(regs + DOEPCTL(idx)), 326794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPTSIZ(idx)), 326894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPDMA(idx))); 32695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DVBUSDIS=0x%08x, DVBUSPULSE=%08x\n", 327394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DVBUSDIS), readl(regs + DVBUSPULSE)); 327483a018045659ee2cc9b1390ddb8b2a247d269bc4Mark Brown#endif 32755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 32785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * state_show - debugfs: show overall driver and device state. 32795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq file to write to. 32805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 32815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 32825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This debugfs entry shows the overall state of the hardware and 32835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * some general information about each of the endpoints available 32845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to the system. 32855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 32865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int state_show(struct seq_file *seq, void *v) 32875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = seq->private; 32895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 32905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 32915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n", 329394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCFG), 329494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCTL), 329594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DSTS)); 32965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n", 329894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPMSK), readl(regs + DOEPMSK)); 32995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n", 330194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GINTMSK), 330294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GINTSTS)); 33035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n", 330594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DAINTMSK), 330694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DAINT)); 33075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n", 330994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GNPTXSTS), 331094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GRXSTSR)); 33115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3312a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\nEndpoint status:\n"); 33135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 0; idx < 15; idx++) { 33155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 in, out; 33165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 331794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski in = readl(regs + DIEPCTL(idx)); 331894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski out = readl(regs + DOEPCTL(idx)); 33195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x", 33215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks idx, in, out); 33225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 332394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski in = readl(regs + DIEPTSIZ(idx)); 332494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski out = readl(regs + DOEPTSIZ(idx)); 33255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x", 33275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks in, out); 33285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3329a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\n"); 33305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 33335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int state_open(struct inode *inode, struct file *file) 33365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, state_show, inode->i_private); 33385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations state_fops = { 33415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 33425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = state_open, 33435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 33445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 33455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 33465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 33475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 33495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * fifo_show - debugfs: show the fifo information 33505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq_file to write data to. 33515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 33525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 33535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Show the FIFO information for the overall fifo and all the 33545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * periodic transmission FIFOs. 33558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 33565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int fifo_show(struct seq_file *seq, void *v) 33575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = seq->private; 33595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 33605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 val; 33615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 33625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3363a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "Non-periodic FIFOs:\n"); 336494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski seq_printf(seq, "RXFIFO: Size %d\n", readl(regs + GRXFSIZ)); 33655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 336694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(regs + GNPTXFSIZ); 33675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n", 336847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 336947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_DEPTH_MASK); 33705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3371a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\nPeriodic TXFIFOs:\n"); 33725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 1; idx <= 15; idx++) { 337447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val = readl(regs + DPTXFSIZN(idx)); 33755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, 337747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 337847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_STARTADDR_MASK); 33795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 33825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int fifo_open(struct inode *inode, struct file *file) 33855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, fifo_show, inode->i_private); 33875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations fifo_fops = { 33905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 33915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = fifo_open, 33925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 33935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 33945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 33955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 33965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const char *decode_direction(int is_in) 33995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 34005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return is_in ? "in" : "out"; 34015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 34025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 34045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * ep_show - debugfs: show the state of an endpoint. 34055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq_file to write data to. 34065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 34075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 34085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This debugfs entry shows the state of the given endpoint (one is 34095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * registered for each available). 34108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 34115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int ep_show(struct seq_file *seq, void *v) 34125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 34135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = seq->private; 34145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = ep->parent; 34155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req; 34165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 34175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = ep->index; 34185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int show_limit = 15; 34195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 34205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n", 34225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->index, ep->ep.name, decode_direction(ep->dir_in)); 34235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* first show the register state */ 34255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n", 342794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPCTL(index)), 342894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPCTL(index))); 34295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n", 343194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPDMA(index)), 343294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPDMA(index))); 34335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n", 343594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPINT(index)), 343694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPINT(index))); 34375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n", 343994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPTSIZ(index)), 344094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPTSIZ(index))); 34415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3442a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\n"); 34435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "mps %d\n", ep->ep.maxpacket); 34445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "total_data=%ld\n", ep->total_data); 34455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "request list (%p,%p):\n", 34475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->queue.next, ep->queue.prev); 34485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 344922258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 34505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry(req, &ep->queue, queue) { 34525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (--show_limit < 0) { 3453a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "not showing more requests...\n"); 34545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 34555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "%c req %p: %d bytes @%p, ", 34585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req == ep->req ? '*' : ' ', 34595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req, req->req.length, req->req.buf); 34605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "%d done, res %d\n", 34615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->req.actual, req->req.status); 34625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 346422258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 34655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 34675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 34685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int ep_open(struct inode *inode, struct file *file) 34705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 34715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, ep_show, inode->i_private); 34725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 34735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations ep_fops = { 34755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 34765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = ep_open, 34775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 34785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 34795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 34805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 34815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 34835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_create_debug - create debugfs directory and files 34845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 34855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 34865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Create the debugfs files to allow the user to get information 34875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * about the state of the system. The directory name is created 34885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * with the same name as the device itself, in case we end up 34895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * with multiple blocks in future systems. 34908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 349141ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic void s3c_hsotg_create_debug(struct s3c_hsotg *hsotg) 34925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 34935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct dentry *root; 34945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned epidx; 34955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks root = debugfs_create_dir(dev_name(hsotg->dev), NULL); 34975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_root = root; 34985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(root)) { 34995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "cannot create debug root\n"); 35005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 35015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 35025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* create general state file */ 35045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_file = debugfs_create_file("state", 0444, root, 35065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg, &state_fops); 35075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(hsotg->debug_file)) 35095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to create state\n", __func__); 35105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_fifo = debugfs_create_file("fifo", 0444, root, 35125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg, &fifo_fops); 35135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(hsotg->debug_fifo)) 35155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__); 35165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* create one file for each endpoint */ 35185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3519b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 35205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; 35215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->debugfs = debugfs_create_file(ep->name, 0444, 35235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks root, ep, &ep_fops); 35245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(ep->debugfs)) 35265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "failed to create %s debug file\n", 35275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->name); 35285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 35295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 35305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 35325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_delete_debug - cleanup debugfs entries 35335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 35345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 35355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Cleanup (remove) the debugfs files for use on module exit. 35368b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3537fb4e98ab63433c4d3a1588ea91c73f1cd7ebaa00Bill Pembertonstatic void s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg) 35385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 35395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned epidx; 35405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3541b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 35425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; 35435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(ep->debugfs); 35445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 35455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_file); 35475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_fifo); 35485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_root); 35495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 35505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35518b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 35528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_probe - probe function for hsotg driver 35538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @pdev: The platform information for the driver 35548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3555f026a52d4309e1e08752a8bd41ac74aeea815686Lukasz Majewski 355641ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic int s3c_hsotg_probe(struct platform_device *pdev) 35575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3558e01ee9f509a927158f670408b41127d4166db1c7Jingoo Han struct s3c_hsotg_plat *plat = dev_get_platdata(&pdev->dev); 355974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct phy *phy; 356074084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct usb_phy *uphy; 35615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct device *dev = &pdev->dev; 3562b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski struct s3c_hsotg_ep *eps; 35635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg; 35645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct resource *res; 35655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum; 35665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 3567fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski int i; 35685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3569338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat hsotg = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsotg), GFP_KERNEL); 35705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hsotg) { 35715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(dev, "cannot get memory\n"); 35725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOMEM; 35735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 35745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 357574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter /* 357674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter * Attempt to find a generic PHY, then look for an old style 357774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter * USB PHY, finally fall back to pdata 357874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter */ 357974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy = devm_phy_get(&pdev->dev, "usb2-phy"); 3580f4f5ba5e7d9e087f044fe87f5a5421761274aa48Felipe Balbi if (IS_ERR(phy)) { 358174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter uphy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); 358274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (IS_ERR(uphy)) { 358374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter /* Fallback for pdata */ 358474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter plat = dev_get_platdata(&pdev->dev); 358574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (!plat) { 358674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter dev_err(&pdev->dev, 358774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter "no platform data or transceiver defined\n"); 358874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter return -EPROBE_DEFER; 358974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } 3590b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri hsotg->plat = plat; 359174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else 359274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter hsotg->uphy = uphy; 359374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else 3594b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri hsotg->phy = phy; 3595b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri 35965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->dev = dev; 35975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 359884749c6dcb694a7aa793221ea8cc3d70bd46d466Sachin Kamat hsotg->clk = devm_clk_get(&pdev->dev, "otg"); 359931ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski if (IS_ERR(hsotg->clk)) { 360031ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski dev_err(dev, "cannot get otg clock\n"); 3601338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat return PTR_ERR(hsotg->clk); 360231ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski } 360331ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 36045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks platform_set_drvdata(pdev, hsotg); 36055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 36075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3608148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding hsotg->regs = devm_ioremap_resource(&pdev->dev, res); 3609148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding if (IS_ERR(hsotg->regs)) { 3610148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding ret = PTR_ERR(hsotg->regs); 3611338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 36125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 36135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = platform_get_irq(pdev, 0); 36155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 36165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(dev, "cannot find IRQ\n"); 3617338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 36185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 36195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 362022258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_init(&hsotg->lock); 362122258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski 36225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->irq = ret; 36235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3624338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat ret = devm_request_irq(&pdev->dev, hsotg->irq, s3c_hsotg_irq, 0, 3625338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat dev_name(dev), hsotg); 36265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 36275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(dev, "cannot claim IRQ\n"); 3628338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 36295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 36305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "regs %p, irq %d\n", hsotg->regs, hsotg->irq); 36325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3633d327ab5b6d660d6fe22b073b743fde1668e593bbMichal Nazarewicz hsotg->gadget.max_speed = USB_SPEED_HIGH; 36345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.ops = &s3c_hsotg_gadget_ops; 36355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.name = dev_name(dev); 36365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* reset the system */ 36385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 363904b4a0fce530eab728e27e24b5a8d6192c6f70d9Lukasz Majewski clk_prepare_enable(hsotg->clk); 364031ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 3641fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski /* regulators */ 3642fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3643fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski for (i = 0; i < ARRAY_SIZE(hsotg->supplies); i++) 3644fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies[i].supply = s3c_hsotg_supply_names[i]; 3645fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3646cd76213eb57c505d3df6fa3134a6b3bb5394a90cSachin Kamat ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(hsotg->supplies), 3647fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies); 3648fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski if (ret) { 3649fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski dev_err(dev, "failed to request supplies: %d\n", ret); 3650338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 3651fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski } 3652fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3653fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 3654fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies); 3655fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3656fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski if (ret) { 3657fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski dev_err(hsotg->dev, "failed to enable supplies: %d\n", ret); 3658fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski goto err_supplies; 3659fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski } 3660fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3661f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter /* Set default UTMI width */ 366247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->phyif = GUSBCFG_PHYIF16; 3663f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter 3664f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter /* 3665f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter * If using the generic PHY framework, check if the PHY bus 3666f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter * width is 8-bit and set the phyif appropriately. 3667f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter */ 3668f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter if (hsotg->phy && (phy_get_bus_width(phy) == 8)) 366947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->phyif = GUSBCFG_PHYIF8; 3670f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter 367174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) 367274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_init(hsotg->phy); 367374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter 36744118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski /* usb phy enable */ 36754118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_enable(hsotg); 36765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_corereset(hsotg); 36785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_init(hsotg); 3679b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski s3c_hsotg_hw_cfg(hsotg); 3680b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3681b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* hsotg->num_of_eps holds number of EPs other than ep0 */ 3682b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3683b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (hsotg->num_of_eps == 0) { 3684b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_err(dev, "wrong number of EPs (zero)\n"); 3685dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -EINVAL; 3686b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_supplies; 3687b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 3688b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3689b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski eps = kcalloc(hsotg->num_of_eps + 1, sizeof(struct s3c_hsotg_ep), 3690b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski GFP_KERNEL); 3691b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (!eps) { 3692b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_err(dev, "cannot get memory\n"); 3693dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -ENOMEM; 3694b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_supplies; 3695b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 3696b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3697b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->eps = eps; 3698b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3699b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* setup endpoint information */ 3700b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3701b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski INIT_LIST_HEAD(&hsotg->gadget.ep_list); 3702b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->gadget.ep0 = &hsotg->eps[0].ep; 3703b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3704b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* allocate EP0 request */ 3705b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3706b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps[0].ep, 3707b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski GFP_KERNEL); 3708b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (!hsotg->ctrl_req) { 3709b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_err(dev, "failed to allocate ctrl req\n"); 3710dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -ENOMEM; 3711b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_ep_mem; 3712b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 37135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* initialise the endpoints now the core has been initialised */ 3715b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epnum = 0; epnum < hsotg->num_of_eps; epnum++) 37165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_initep(hsotg, &hsotg->eps[epnum], epnum); 37175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3718f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski /* disable power and clock */ 3719f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 3720f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), 3721f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski hsotg->supplies); 3722f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (ret) { 3723f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski dev_err(hsotg->dev, "failed to disable supplies: %d\n", ret); 3724f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski goto err_ep_mem; 3725f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski } 3726f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 3727f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 3728f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 37290f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior ret = usb_add_gadget_udc(&pdev->dev, &hsotg->gadget); 37300f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior if (ret) 3731b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_ep_mem; 37320f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 37335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_create_debug(hsotg); 37345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_dump(hsotg); 37365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 37385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37391d144c6732f6badd4be7a1383a4ae2adcc3f9386Lukasz Majewskierr_ep_mem: 3740b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski kfree(eps); 3741fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewskierr_supplies: 37424118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 374331ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowskierr_clk: 37441d144c6732f6badd4be7a1383a4ae2adcc3f9386Lukasz Majewski clk_disable_unprepare(hsotg->clk); 3745338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat 37465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 37475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 37485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37498b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 37508b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_remove - remove function for hsotg driver 37518b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @pdev: The platform information for the driver 37528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3753fb4e98ab63433c4d3a1588ea91c73f1cd7ebaa00Bill Pembertonstatic int s3c_hsotg_remove(struct platform_device *pdev) 37545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 37555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 37565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37570f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&hsotg->gadget); 37580f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 37595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_delete_debug(hsotg); 37605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3761f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (hsotg->driver) { 3762f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski /* should have been done already by driver model core */ 3763f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski usb_gadget_unregister_driver(hsotg->driver); 3764f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski } 37655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37664118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 376774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) 376874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_exit(hsotg->phy); 376904b4a0fce530eab728e27e24b5a8d6192c6f70d9Lukasz Majewski clk_disable_unprepare(hsotg->clk); 377031ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 37715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 37725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 37735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3774b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowskistatic int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state) 3775b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski{ 3776b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 3777b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski unsigned long flags; 3778b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ret = 0; 3779b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3780b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) 3781b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski dev_info(hsotg->dev, "suspending usb gadget %s\n", 3782b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->driver->driver.name); 3783b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3784b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_lock_irqsave(&hsotg->lock, flags); 3785b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_disconnect(hsotg); 3786b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_phy_disable(hsotg); 3787b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->gadget.speed = USB_SPEED_UNKNOWN; 3788b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_unlock_irqrestore(&hsotg->lock, flags); 3789b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3790b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) { 3791b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ep; 3792b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski for (ep = 0; ep < hsotg->num_of_eps; ep++) 3793b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); 3794b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3795b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), 3796b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->supplies); 3797b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski } 3798b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3799b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski return ret; 3800b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski} 3801b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3802b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowskistatic int s3c_hsotg_resume(struct platform_device *pdev) 3803b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski{ 3804b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 3805b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski unsigned long flags; 3806b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ret = 0; 3807b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3808b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) { 3809b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski dev_info(hsotg->dev, "resuming usb gadget %s\n", 3810b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->driver->driver.name); 3811b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 3812b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->supplies); 3813b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski } 3814b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3815b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_lock_irqsave(&hsotg->lock, flags); 3816b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->last_rst = jiffies; 3817b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_phy_enable(hsotg); 3818b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_core_init(hsotg); 3819b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_unlock_irqrestore(&hsotg->lock, flags); 3820b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3821b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski return ret; 3822b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski} 38235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3824c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#ifdef CONFIG_OF 3825c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figastatic const struct of_device_id s3c_hsotg_of_ids[] = { 3826c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa { .compatible = "samsung,s3c6400-hsotg", }, 38270d33d825632737c8d3353c80c8701252682bcb03Matt Porter { .compatible = "snps,dwc2", }, 3828c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa { /* sentinel */ } 3829c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa}; 3830c50f056c360673ef196b49bfa161d841f0fbe92eTomasz FigaMODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids); 3831c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#endif 3832c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa 38335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct platform_driver s3c_hsotg_driver = { 38345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .driver = { 38355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .name = "s3c-hsotg", 38365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 3837c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa .of_match_table = of_match_ptr(s3c_hsotg_of_ids), 38385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks }, 38395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .probe = s3c_hsotg_probe, 38407690417db5085f0de03aa70b8ca01b0118e8a1b4Bill Pemberton .remove = s3c_hsotg_remove, 38415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .suspend = s3c_hsotg_suspend, 38425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .resume = s3c_hsotg_resume, 38435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 38445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3845cc27c96c2bee93068bfc60ea6b09611d88cef429Axel Linmodule_platform_driver(s3c_hsotg_driver); 38465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 38475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_DESCRIPTION("Samsung S3C USB High-speed/OtG device"); 38485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); 38495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_LICENSE("GPL"); 38505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_ALIAS("platform:s3c-hsotg"); 3851