gadget.c revision 9b2667f1f30e91becc3751acd5cffaedcf68e098
18b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 2dfbc6fa3e1f19d31aeb6afdffeede7271e29bfbfAnton Tikhomirov * Copyright (c) 2011 Samsung Electronics Co., Ltd. 3dfbc6fa3e1f19d31aeb6afdffeede7271e29bfbfAnton Tikhomirov * http://www.samsung.com 4dfbc6fa3e1f19d31aeb6afdffeede7271e29bfbfAnton Tikhomirov * 55b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Copyright 2008 Openmoko, Inc. 65b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Copyright 2008 Simtec Electronics 75b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Ben Dooks <ben@simtec.co.uk> 85b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * http://armlinux.simtec.co.uk/ 95b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * S3C USB2.0 High-speed / OtG driver 115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This program is free software; you can redistribute it and/or modify 135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * it under the terms of the GNU General Public License version 2 as 145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * published by the Free Software Foundation. 158b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/kernel.h> 185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/module.h> 195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/spinlock.h> 205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/interrupt.h> 215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/platform_device.h> 225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/dma-mapping.h> 235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/debugfs.h> 245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/seq_file.h> 255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/delay.h> 265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/io.h> 275a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 28e50bf385bfadeaacfb8af07b9b78dcfdef339981Maurus Cuelenaere#include <linux/clk.h> 29fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski#include <linux/regulator/consumer.h> 30c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#include <linux/of_platform.h> 3174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter#include <linux/phy/phy.h> 325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/usb/ch9.h> 345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/usb/gadget.h> 35b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri#include <linux/usb/phy.h> 36126625e1bf3228a3db7359310344617bee878517Lukasz Majewski#include <linux/platform_data/s3c-hsotg.h> 375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 38f7c0b14351c483bdeb86a81d609e26263cb0dd30Dinh Nguyen#include "core.h" 395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* conversion functions */ 415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline struct s3c_hsotg_req *our_req(struct usb_request *req) 425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return container_of(req, struct s3c_hsotg_req, req); 445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline struct s3c_hsotg_ep *our_ep(struct usb_ep *ep) 475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return container_of(ep, struct s3c_hsotg_ep, ep); 495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline struct s3c_hsotg *to_hsotg(struct usb_gadget *gadget) 525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return container_of(gadget, struct s3c_hsotg, gadget); 545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline void __orr32(void __iomem *ptr, u32 val) 575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(readl(ptr) | val, ptr); 595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline void __bic32(void __iomem *ptr, u32 val) 625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(readl(ptr) & ~val, ptr); 645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* forward decleration of functions */ 675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_dump(struct s3c_hsotg *hsotg); 685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * using_dma - return the DMA status of the driver. 715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return true if we're using DMA. 745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Currently, we have the DMA support code worked into everywhere 765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that needs it, but the AMBA DMA implementation in the hardware can 775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * only DMA from 32bit aligned addresses. This means that gadgets such 785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * as the CDC Ethernet cannot work as they often pass packets which are 795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * not 32bit aligned. 805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Unfortunately the choice to use DMA or not is global to the controller 825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * and seems to be only settable when the controller is being put through 835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * a core reset. This means we either need to fix the gadgets to take 845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * account of DMA alignment, or add bounce buffers (yuerk). 855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Until this issue is sorted out, we always return 'false'. 875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline bool using_dma(struct s3c_hsotg *hsotg) 895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return false; /* support is not complete */ 915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_en_gsint - enable one or more of the general interrupt 955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ints: A bitmask of the interrupts to enable 975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_en_gsint(struct s3c_hsotg *hsotg, u32 ints) 995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 10094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gsintmsk = readl(hsotg->regs + GINTMSK); 1015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 new_gsintmsk; 1025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks new_gsintmsk = gsintmsk | ints; 1045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (new_gsintmsk != gsintmsk) { 1065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "gsintmsk now 0x%08x\n", new_gsintmsk); 10794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(new_gsintmsk, hsotg->regs + GINTMSK); 1085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 1095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 1105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_disable_gsint - disable one or more of the general interrupt 1135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 1145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ints: A bitmask of the interrupts to enable 1155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 1165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_disable_gsint(struct s3c_hsotg *hsotg, u32 ints) 1175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 11894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gsintmsk = readl(hsotg->regs + GINTMSK); 1195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 new_gsintmsk; 1205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks new_gsintmsk = gsintmsk & ~ints; 1225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (new_gsintmsk != gsintmsk) 12494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(new_gsintmsk, hsotg->regs + GINTMSK); 1255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 1265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ctrl_epint - enable/disable an endpoint irq 1295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 1305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint index 1315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @dir_in: True if direction is in. 1325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @en: The enable value, true to enable 1335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 1345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Set or clear the mask for an individual endpoint's interrupt 1355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * request. 1365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 1375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_ctrl_epint(struct s3c_hsotg *hsotg, 1385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int ep, unsigned int dir_in, 1395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int en) 1405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 1415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 1425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 bit = 1 << ep; 1435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 daint; 1445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!dir_in) 1465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bit <<= 16; 1475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks local_irq_save(flags); 14994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski daint = readl(hsotg->regs + DAINTMSK); 1505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (en) 1515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks daint |= bit; 1525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 1535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks daint &= ~bit; 15494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(daint, hsotg->regs + DAINTMSK); 1555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks local_irq_restore(flags); 1565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 1575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_init_fifo - initialise non-periodic FIFOs 1605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance. 1615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 1625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_init_fifo(struct s3c_hsotg *hsotg) 1635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 1640f002d200598918f5058dfcfda3da46f29019765Ben Dooks unsigned int ep; 1650f002d200598918f5058dfcfda3da46f29019765Ben Dooks unsigned int addr; 1660f002d200598918f5058dfcfda3da46f29019765Ben Dooks unsigned int size; 1671703a6d3c38944731ba23594843a704d828266f3Ben Dooks int timeout; 1680f002d200598918f5058dfcfda3da46f29019765Ben Dooks u32 val; 1690f002d200598918f5058dfcfda3da46f29019765Ben Dooks 1706d091ee761992f804a1dcd411836ad0abb71be10Ben Dooks /* set FIFO sizes to 2048/1024 */ 1715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(2048, hsotg->regs + GRXFSIZ); 17347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel((2048 << FIFOSIZE_STARTADDR_SHIFT) | 17447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen (1024 << FIFOSIZE_DEPTH_SHIFT), hsotg->regs + GNPTXFSIZ); 1750f002d200598918f5058dfcfda3da46f29019765Ben Dooks 1768b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 1778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * arange all the rest of the TX FIFOs, as some versions of this 1780f002d200598918f5058dfcfda3da46f29019765Ben Dooks * block have overlapping default addresses. This also ensures 1790f002d200598918f5058dfcfda3da46f29019765Ben Dooks * that if the settings have been changed, then they are set to 1808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * known values. 1818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 1820f002d200598918f5058dfcfda3da46f29019765Ben Dooks 1830f002d200598918f5058dfcfda3da46f29019765Ben Dooks /* start at the end of the GNPTXFSIZ, rounded up */ 1840f002d200598918f5058dfcfda3da46f29019765Ben Dooks addr = 2048 + 1024; 1850f002d200598918f5058dfcfda3da46f29019765Ben Dooks size = 768; 1860f002d200598918f5058dfcfda3da46f29019765Ben Dooks 1878b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 1888b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * currently we allocate TX FIFOs for all possible endpoints, 1898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * and assume that they are all the same size. 1908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 1910f002d200598918f5058dfcfda3da46f29019765Ben Dooks 192f7a83fe19336125d7eb26488788dc66c03f2c08eAnton Tikhomirov for (ep = 1; ep <= 15; ep++) { 1930f002d200598918f5058dfcfda3da46f29019765Ben Dooks val = addr; 19447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val |= size << FIFOSIZE_DEPTH_SHIFT; 1950f002d200598918f5058dfcfda3da46f29019765Ben Dooks addr += size; 1960f002d200598918f5058dfcfda3da46f29019765Ben Dooks 19747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(val, hsotg->regs + DPTXFSIZN(ep)); 1980f002d200598918f5058dfcfda3da46f29019765Ben Dooks } 1991703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 2018b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * according to p428 of the design guide, we need to ensure that 2028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * all fifos are flushed before continuing 2038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2041703a6d3c38944731ba23594843a704d828266f3Ben Dooks 20547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_TXFNUM(0x10) | GRSTCTL_TXFFLSH | 20647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GRSTCTL_RXFFLSH, hsotg->regs + GRSTCTL); 2071703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2081703a6d3c38944731ba23594843a704d828266f3Ben Dooks /* wait until the fifos are both flushed */ 2091703a6d3c38944731ba23594843a704d828266f3Ben Dooks timeout = 100; 2101703a6d3c38944731ba23594843a704d828266f3Ben Dooks while (1) { 21194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(hsotg->regs + GRSTCTL); 2121703a6d3c38944731ba23594843a704d828266f3Ben Dooks 21347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((val & (GRSTCTL_TXFFLSH | GRSTCTL_RXFFLSH)) == 0) 2141703a6d3c38944731ba23594843a704d828266f3Ben Dooks break; 2151703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2161703a6d3c38944731ba23594843a704d828266f3Ben Dooks if (--timeout == 0) { 2171703a6d3c38944731ba23594843a704d828266f3Ben Dooks dev_err(hsotg->dev, 2181703a6d3c38944731ba23594843a704d828266f3Ben Dooks "%s: timeout flushing fifos (GRSTCTL=%08x)\n", 2191703a6d3c38944731ba23594843a704d828266f3Ben Dooks __func__, val); 2201703a6d3c38944731ba23594843a704d828266f3Ben Dooks } 2211703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2221703a6d3c38944731ba23594843a704d828266f3Ben Dooks udelay(1); 2231703a6d3c38944731ba23594843a704d828266f3Ben Dooks } 2241703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2251703a6d3c38944731ba23594843a704d828266f3Ben Dooks dev_dbg(hsotg->dev, "FIFOs reset, timeout at %d\n", timeout); 2265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: USB endpoint to allocate request for. 2305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @flags: Allocation flags 2315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Allocate a new USB request structure appropriate for the specified endpoint 2335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2340978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brownstatic struct usb_request *s3c_hsotg_ep_alloc_request(struct usb_ep *ep, 2350978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brown gfp_t flags) 2365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req; 2385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req = kzalloc(sizeof(struct s3c_hsotg_req), flags); 2405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) 2415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 2425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&req->queue); 2445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return &req->req; 2465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is_ep_periodic - return true if the endpoint is in periodic mode. 2505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to query. 2515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Returns true if the endpoint is in periodic mode, meaning it is being 2535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * used for an Interrupt or ISO transfer. 2545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline int is_ep_periodic(struct s3c_hsotg_ep *hs_ep) 2565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return hs_ep->periodic; 2585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_unmap_dma - unmap the DMA memory being used for the request 2625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 2635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint for the request 2645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request being processed. 2655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is the reverse of s3c_hsotg_map_dma(), called for the completion 2675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of a request to ensure the buffer is ready for access by the caller. 2688b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_unmap_dma(struct s3c_hsotg *hsotg, 2705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 2715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req) 2725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = &hs_req->req; 2745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* ignore this if we're not moving any data */ 2765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.length == 0) 2775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 2785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27917d966a325a7ccfb5970839fb5b2ebb9e3909a6fJingoo Han usb_gadget_unmap_request(&hsotg->gadget, req, hs_ep->dir_in); 2805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_write_fifo - write packet Data to the TxFIFO 2845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The controller state. 2855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint we're going to write for. 2865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to write data for. 2875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is called when the TxFIFO has some space in it to hold a new 2895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transmission and we have something to give it. The actual setup of 2905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the data size is done elsewhere, so all we have to do is to actually 2915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * write the data. 2925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The return value is zero if there is more space (or nothing was done) 2945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * otherwise -ENOSPC is returned if the FIFO space was used up. 2955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This routine is only needed for PIO 2978b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg, 2995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 3005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req) 3015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool periodic = is_ep_periodic(hs_ep); 30394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gnptxsts = readl(hsotg->regs + GNPTXSTS); 3045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int buf_pos = hs_req->req.actual; 3055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int to_write = hs_ep->size_loaded; 3065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void *data; 3075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int can_write; 3085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int pkt_round; 3094fca54aa5829328a356aea31895b817dacba2861Robert Baldyga int max_transfer; 3105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write -= (buf_pos - hs_ep->last_load); 3125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if there's nothing to write, get out early */ 3145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write == 0) 3155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 3165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31710aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (periodic && !hsotg->dedicated_fifos) { 31894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DIEPTSIZ(hs_ep->index)); 3195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_left; 3205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_done; 3215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * work out how much data was loaded so we can calculate 3248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * how much data is left in the fifo. 3258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 3285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3308b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if shared fifo, we cannot write anything until the 331e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks * previous data has been completely sent. 332e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks */ 333e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks if (hs_ep->fifo_load != 0) { 33447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_PTXFEMP); 335e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks return -ENOSPC; 336e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks } 337e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks 3385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: left=%d, load=%d, fifo=%d, size %d\n", 3395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, size_left, 3405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->size_loaded, hs_ep->fifo_load, hs_ep->fifo_size); 3415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* how much of the data has moved */ 3435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 3445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* how much data is left in the fifo */ 3465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = hs_ep->fifo_load - size_done; 3475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: => can_write1=%d\n", 3485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, can_write); 3495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = hs_ep->fifo_size - can_write; 3515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: => can_write2=%d\n", 3525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, can_write); 3535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (can_write <= 0) { 35547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_PTXFEMP); 3565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 3575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 35810aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks } else if (hsotg->dedicated_fifos && hs_ep->index != 0) { 35994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski can_write = readl(hsotg->regs + DTXFSTS(hs_ep->index)); 36010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 36110aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks can_write &= 0xffff; 36210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks can_write *= 4; 3635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 36447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (GNPTXSTS_NP_TXQ_SPC_AVAIL_GET(gnptxsts) == 0) { 3655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 3665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: no queue slots available (0x%08x)\n", 3675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, gnptxsts); 3685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_NPTXFEMP); 3705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 3715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 3725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen can_write = GNPTXSTS_NP_TXF_SPC_AVAIL_GET(gnptxsts); 374679f9b7c7c7d3c746792138e9d7d76578ef52c41Ben Dooks can_write *= 4; /* fifo size is in 32bit quantities. */ 3755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 3765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3774fca54aa5829328a356aea31895b817dacba2861Robert Baldyga max_transfer = hs_ep->ep.maxpacket * hs_ep->mc; 3784fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 3794fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_dbg(hsotg->dev, "%s: GNPTXSTS=%08x, can=%d, to=%d, max_transfer %d\n", 3804fca54aa5829328a356aea31895b817dacba2861Robert Baldyga __func__, gnptxsts, can_write, to_write, max_transfer); 3815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * limit to 512 bytes of data, it seems at least on the non-periodic 3845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * FIFO, requests of >512 cause the endpoint to get stuck with a 3855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * fragment of the end of the transfer in it. 3865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 387811f33033f9e6a00756e38990d82214c8c619f4cRobert Baldyga if (can_write > 512 && !periodic) 3885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = 512; 3895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3918b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * limit the write to one max-packet size worth of data, but allow 39203e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks * the transfer to return that it did not run out of fifo space 3938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * doing it. 3948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3954fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (to_write > max_transfer) { 3964fca54aa5829328a356aea31895b817dacba2861Robert Baldyga to_write = max_transfer; 39703e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks 3985cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga /* it's needed only when we do not use dedicated fifos */ 3995cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga if (!hsotg->dedicated_fifos) 4005cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga s3c_hsotg_en_gsint(hsotg, 40147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen periodic ? GINTSTS_PTXFEMP : 40247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_NPTXFEMP); 40303e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks } 40403e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks 4055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* see if we can write data */ 4065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write > can_write) { 4085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write = can_write; 4094fca54aa5829328a356aea31895b817dacba2861Robert Baldyga pkt_round = to_write % max_transfer; 4105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Round the write down to an 4135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * exact number of packets. 4145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, we do not currently check to see if we can ever 4165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * write a full packet or not to the FIFO. 4175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 4185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (pkt_round) 4205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write -= pkt_round; 4215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * enable correct FIFO interrupt to alert us when there 4248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * is more room left. 4258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 4265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4275cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga /* it's needed only when we do not use dedicated fifos */ 4285cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga if (!hsotg->dedicated_fifos) 4295cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga s3c_hsotg_en_gsint(hsotg, 43047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen periodic ? GINTSTS_PTXFEMP : 43147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_NPTXFEMP); 4325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 4335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "write %d/%d, can_write %d, done %d\n", 4355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write, hs_req->req.length, can_write, buf_pos); 4365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write <= 0) 4385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 4395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual = buf_pos + to_write; 4415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->total_data += to_write; 4425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (periodic) 4445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->fifo_load += to_write; 4455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write = DIV_ROUND_UP(to_write, 4); 4475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks data = hs_req->req.buf + buf_pos; 4485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4491a7ed5bec407478b9ce5e3267708110277851614Matt Porter iowrite32_rep(hsotg->regs + EPFIFO(hs_ep->index), data, to_write); 4505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return (to_write >= can_write) ? -ENOSPC : 0; 4525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 4535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 4555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * get_ep_limit - get the maximum data legnth for this endpoint 4565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint 4575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return the maximum data that can be queued in one go on a given endpoint 4595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so that transfers that are too long can be split. 4605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 4615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic unsigned get_ep_limit(struct s3c_hsotg_ep *hs_ep) 4625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 4635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 4645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxsize; 4655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxpkt; 4665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0) { 46847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxsize = DXEPTSIZ_XFERSIZE_LIMIT + 1; 46947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxpkt = DXEPTSIZ_PKTCNT_LIMIT + 1; 4705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 471b05ca580c39314c8527e2e1c36a823970cc01683Ben Dooks maxsize = 64+64; 47266e5c643488a26d2a6b737bdbd92fc72f13cdeacJingoo Han if (hs_ep->dir_in) 47347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxpkt = DIEPTSIZ0_PKTCNT_LIMIT + 1; 47466e5c643488a26d2a6b737bdbd92fc72f13cdeacJingoo Han else 4755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxpkt = 2; 4765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 4775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* we made the constant loading easier above by using +1 */ 4795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxpkt--; 4805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxsize--; 4815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * constrain by packet count if maxpkts*pktsize is greater 4848b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * than the length register size. 4858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 4865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((maxpkt * hs_ep->ep.maxpacket) < maxsize) 4885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxsize = maxpkt * hs_ep->ep.maxpacket; 4895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return maxsize; 4915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 4925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 4945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_start_req - start a USB request from an endpoint's queue 4955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The controller state. 4965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to process a request for 4975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to start. 4985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @continuing: True if we are doing more for the current request. 4995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 5005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Start the given request running by setting the endpoint registers 5015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * appropriately, and writing any data to the FIFOs. 5025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 5035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_start_req(struct s3c_hsotg *hsotg, 5045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 5055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req, 5065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool continuing) 5075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 5085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *ureq = &hs_req->req; 5095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 5105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in = hs_ep->dir_in; 5115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 5125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epsize_reg; 5135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epsize; 5145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 5155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned length; 5165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned packets; 5175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxreq; 5185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0) { 5205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_ep->req && !continuing) { 5215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: active request\n", __func__); 5225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 5235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 5245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else if (hs_ep->req != hs_req && continuing) { 5255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, 5265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: continue different req\n", __func__); 5275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 5285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 5295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 53294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 53394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epsize_reg = dir_in ? DIEPTSIZ(index) : DOEPTSIZ(index); 5345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x, ep %d, dir %s\n", 5365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg), index, 5375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->dir_in ? "in" : "out"); 5385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5399c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* If endpoint is stalled, we will restart request later */ 5409c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov ctrl = readl(hsotg->regs + epctrl_reg); 5419c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 54247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ctrl & DXEPCTL_STALL) { 5439c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov dev_warn(hsotg->dev, "%s: ep%d is stalled\n", __func__, index); 5449c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return; 5459c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 5469c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 5475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks length = ureq->length - ureq->actual; 54871225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski dev_dbg(hsotg->dev, "ureq->length:%d ureq->actual:%d\n", 54971225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski ureq->length, ureq->actual); 5505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (0) 5515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 5520cc4cf6f3049fe174b6698016e046a233a2a6045Fabio Estevam "REQ buf %p len %d dma %pad noi=%d zp=%d snok=%d\n", 5538b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han ureq->buf, length, &ureq->dma, 5545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ureq->no_interrupt, ureq->zero, ureq->short_not_ok); 5555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxreq = get_ep_limit(hs_ep); 5575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length > maxreq) { 5585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int round = maxreq % hs_ep->ep.maxpacket; 5595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: length %d, max-req %d, r %d\n", 5615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, length, maxreq, round); 5625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* round down to multiple of packets */ 5645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (round) 5655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxreq -= round; 5665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks length = maxreq; 5685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length) 5715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets = DIV_ROUND_UP(length, hs_ep->ep.maxpacket); 5725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 5735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets = 1; /* send one packet if length is zero. */ 5745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5754fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->isochronous && length > (hs_ep->mc * hs_ep->ep.maxpacket)) { 5764fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_err(hsotg->dev, "req length > maxpacket*mc\n"); 5774fca54aa5829328a356aea31895b817dacba2861Robert Baldyga return; 5784fca54aa5829328a356aea31895b817dacba2861Robert Baldyga } 5794fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 5805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in && index != 0) 5814fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->isochronous) 58247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize = DXEPTSIZ_MC(packets); 5834fca54aa5829328a356aea31895b817dacba2861Robert Baldyga else 58447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize = DXEPTSIZ_MC(1); 5855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 5865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epsize = 0; 5875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0 && ureq->zero) { 5898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 5908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * test for the packets being exactly right for the 5918b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transfer 5928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 5935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length == (packets * hs_ep->ep.maxpacket)) 5955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets++; 5965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 59847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize |= DXEPTSIZ_PKTCNT(packets); 59947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize |= DXEPTSIZ_XFERSIZE(length); 6005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %d@%d/%d, 0x%08x => 0x%08x\n", 6025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, packets, length, ureq->length, epsize, epsize_reg); 6035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* store the request as the current one we're doing */ 6055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->req = hs_req; 6065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* write size / packets */ 6085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epsize, hsotg->regs + epsize_reg); 6095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 610db1d8ba36551bf55222c7961d9e9a1195a612fdeAnton Tikhomirov if (using_dma(hsotg) && !continuing) { 6115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int dma_reg; 6125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6138b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * write DMA address to control register, buffer already 6158b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * synced by s3c_hsotg_ep_queue(). 6168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 61894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dma_reg = dir_in ? DIEPDMA(index) : DOEPDMA(index); 6195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ureq->dma, hsotg->regs + dma_reg); 6205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6210cc4cf6f3049fe174b6698016e046a233a2a6045Fabio Estevam dev_dbg(hsotg->dev, "%s: %pad => 0x%08x\n", 6228b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han __func__, &ureq->dma, dma_reg); 6235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 6245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 62547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ 62647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_USBACTEP; 62771225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 62871225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski dev_dbg(hsotg->dev, "setup req:%d\n", hsotg->setup); 62971225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 63071225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski /* For Setup request do not clear NAK */ 63171225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski if (hsotg->setup && index == 0) 63271225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski hsotg->setup = 0; 63371225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski else 63447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ 63571225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 6365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); 6385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ctrl, hsotg->regs + epctrl_reg); 6395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6408b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6418b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set these, it seems that DMA support increments past the end 6425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the packet buffer so we need to calculate the length from 6438b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * this information. 6448b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->size_loaded = length; 6465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->last_load = ureq->actual; 6475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in && !using_dma(hsotg)) { 6495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* set these anyway, we may need them for non-periodic in */ 6505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->fifo_load = 0; 6515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); 6535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 6545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * clear the INTknTXFEmpMsk when we start request, more as a aide 6578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * to debugging to see what is going on. 6588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) 66047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DIEPMSK_INTKNTXFEMPMSK, 66194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DIEPINT(index)); 6625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6638b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6648b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Note, trying to clear the NAK here causes problems with transmit 6658b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * on the S3C6400 ending up with the TXFIFO becoming full. 6668b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* check ep is enabled */ 66947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (!(readl(hsotg->regs + epctrl_reg) & DXEPCTL_EPENA)) 6705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, 67147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "ep%d: failed to become enabled (DXEPCTL=0x%08x)?\n", 6725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks index, readl(hsotg->regs + epctrl_reg)); 6735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 67447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dev_dbg(hsotg->dev, "%s: DXEPCTL=0x%08x\n", 6755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg)); 676afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga 677afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga /* enable ep interrupts */ 678afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 1); 6795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 6805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 6825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_map_dma - map the DMA memory being used for the request 6835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 6845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint the request is on. 6855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request being processed. 6865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 6875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We've been asked to queue a request, so ensure that the memory buffer 6885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is correctly setup for DMA. If we've been passed an extant DMA address 6895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * then ensure the buffer has been synced to memory. If our buffer has no 6905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * DMA memory, then we map the memory and mark our request to allow us to 6915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * cleanup on completion. 6928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_map_dma(struct s3c_hsotg *hsotg, 6945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 6955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 6965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 6975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 698e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi int ret; 6995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if the length is zero, ignore the DMA data */ 7015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.length == 0) 7025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 7035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 704e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi ret = usb_gadget_map_request(&hsotg->gadget, req, hs_ep->dir_in); 705e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi if (ret) 706e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi goto dma_error; 7075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 7095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksdma_error: 7115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to map buffer %p, %d bytes\n", 7125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, req->buf, req->length); 7135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EIO; 7155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, 7185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks gfp_t gfp_flags) 7195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 7205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 7215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 7225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 7235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool first; 7245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n", 7265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->name, req, req->length, req->buf, req->no_interrupt, 7275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero, req->short_not_ok); 7285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* initialise status of the request */ 7305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_req->queue); 7315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->actual = 0; 7325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->status = -EINPROGRESS; 7335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if we're using DMA, sync the buffers as necessary */ 7355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hs)) { 7365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret = s3c_hsotg_map_dma(hs, hs_ep, req); 7375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) 7385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 7395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 7405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks first = list_empty(&hs_ep->queue); 7425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_add_tail(&hs_req->queue, &hs_ep->queue); 7435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (first) 7455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hs, hs_ep, hs_req, false); 7465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 7485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7505ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewskistatic int s3c_hsotg_ep_queue_lock(struct usb_ep *ep, struct usb_request *req, 7515ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski gfp_t gfp_flags) 7525ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski{ 7535ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg_ep *hs_ep = our_ep(ep); 7545ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg *hs = hs_ep->parent; 7555ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski unsigned long flags = 0; 7565ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski int ret = 0; 7575ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 7585ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hs->lock, flags); 7595ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski ret = s3c_hsotg_ep_queue(ep, req, gfp_flags); 7605ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 7615ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 7625ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski return ret; 7635ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski} 7645ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 7655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_ep_free_request(struct usb_ep *ep, 7665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 7675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 7685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 7695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kfree(hs_req); 7715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 7745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_oursetup - setup completion callback 7755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the request was on. 7765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request completed. 7775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 7785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Called on completion of any requests the driver itself 7795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * submitted that need cleaning up. 7805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 7815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_oursetup(struct usb_ep *ep, 7825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 7835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 7845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 7855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 7865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep %p, req %p\n", __func__, ep, req); 7885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_free_request(ep, req); 7905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 7935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * ep_from_windex - convert control wIndex value to endpoint 7945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 7955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @windex: The control request wIndex field (in host order). 7965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 7975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Convert the given wIndex into a pointer to an driver endpoint 7985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * structure, or return NULL if it is not a valid endpoint. 7998b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 8005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct s3c_hsotg_ep *ep_from_windex(struct s3c_hsotg *hsotg, 8015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 windex) 8025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[windex & 0x7F]; 8045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir = (windex & USB_DIR_IN) ? 1 : 0; 8055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx = windex & 0x7F; 8065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (windex >= 0x100) 8085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 8095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 810b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (idx > hsotg->num_of_eps) 8115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 8125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (idx && ep->dir_in != dir) 8145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 8155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ep; 8175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 8185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 8205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_send_reply - send reply to control request 8215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 8225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: Endpoint 0 8235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @buff: Buffer for request 8245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @length: Length of reply. 8255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 8265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Create a request and queue it on the given endpoint. This is useful as 8275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * an internal method of sending replies to certain control requests, etc. 8285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 8295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_send_reply(struct s3c_hsotg *hsotg, 8305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep, 8315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void *buff, 8325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int length) 8335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req; 8355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 8365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: buff %p, len %d\n", __func__, buff, length); 8385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req = s3c_hsotg_ep_alloc_request(&ep->ep, GFP_ATOMIC); 8405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->ep0_reply = req; 8415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) { 8425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: cannot alloc req\n", __func__); 8435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOMEM; 8445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 8455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->buf = hsotg->ep0_buff; 8475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->length = length; 8485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero = 1; /* always do zero-length final transfer */ 8495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->complete = s3c_hsotg_complete_oursetup; 8505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length) 8525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks memcpy(req->buf, buff, length); 8535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 8545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->sent_zlp = 1; 8555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_ep_queue(&ep->ep, req, GFP_ATOMIC); 8575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 8585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: cannot queue req\n", __func__); 8595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 8605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 8615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 8635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 8645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 8665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_req_status - process request GET_STATUS 8675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 8685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: USB control request 8695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 8705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_process_req_status(struct s3c_hsotg *hsotg, 8715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 8725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 8745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 8755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __le16 reply; 8765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 8775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: USB_REQ_GET_STATUS\n", __func__); 8795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep0->dir_in) { 8815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: direction out?\n", __func__); 8825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 8835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 8845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (ctrl->bRequestType & USB_RECIP_MASK) { 8865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_DEVICE: 8875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(0); /* bit 0 => self powered, 8885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * bit 1 => remote wakeup */ 8895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 8905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_INTERFACE: 8925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* currently, the data result should be zero */ 8935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(0); 8945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 8955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_ENDPOINT: 8975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); 8985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep) 8995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 9005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(ep->halted ? 1 : 0); 9025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 9035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 9055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 9065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (le16_to_cpu(ctrl->wLength) != 2) 9095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 9105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_send_reply(hsotg, ep0, &reply, 2); 9125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 9135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to send reply\n", __func__); 9145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 9155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 1; 9185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 9195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value); 9215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 9239c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * get_ep_head - return the first request on the endpoint 9249c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @hs_ep: The controller endpoint to get 9259c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * 9269c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * Get the first request on the endpoint. 9279c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 9289c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirovstatic struct s3c_hsotg_req *get_ep_head(struct s3c_hsotg_ep *hs_ep) 9299c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov{ 9309c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (list_empty(&hs_ep->queue)) 9319c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return NULL; 9329c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 9339c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return list_first_entry(&hs_ep->queue, struct s3c_hsotg_req, queue); 9349c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov} 9359c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 9369c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov/** 9375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_req_featire - process request {SET,CLEAR}_FEATURE 9385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 9395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: USB control request 9405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 9415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg, 9425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 9435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 94426ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 9459c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov struct s3c_hsotg_req *hs_req; 9469c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov bool restart; 9475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE); 9485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 94926ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov int ret; 950bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga bool halted; 9515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %s_FEATURE\n", 9535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, set ? "SET" : "CLEAR"); 9545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ctrl->bRequestType == USB_RECIP_ENDPOINT) { 9565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); 9575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep) { 9585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: no endpoint for 0x%04x\n", 9595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, le16_to_cpu(ctrl->wIndex)); 9605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 9615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (le16_to_cpu(ctrl->wValue)) { 9645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_HALT: 965bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga halted = ep->halted; 966bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga 9675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_sethalt(&ep->ep, set); 96826ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov 96926ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); 97026ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov if (ret) { 97126ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov dev_err(hsotg->dev, 97226ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov "%s: failed to send reply\n", __func__); 97326ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov return ret; 97426ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov } 9759c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 976bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga /* 977bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga * we have to complete all requests for ep if it was 978bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga * halted, and the halt was cleared by CLEAR_FEATURE 979bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga */ 980bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga 981bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga if (!set && halted) { 9829c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* 9839c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * If we have request in progress, 9849c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * then complete it 9859c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 9869c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (ep->req) { 9879c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req = ep->req; 9889c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov ep->req = NULL; 9899c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov list_del_init(&hs_req->queue); 9909c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req->req.complete(&ep->ep, 9919c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov &hs_req->req); 9929c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 9939c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 9949c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* If we have pending request, then start it */ 9959c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov restart = !list_empty(&ep->queue); 9969c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (restart) { 9979c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req = get_ep_head(ep); 9989c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov s3c_hsotg_start_req(hsotg, ep, 9999c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req, false); 10009c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 10019c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 10029c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 10035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 10045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 10065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 10075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 10085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else 10095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; /* currently only deal with endpoint */ 10105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 1; 10125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 10135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1014ab93e014f35374a8169b0f465fccee69e04ea34cRobert Baldygastatic void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg); 1015d18f7116a5ddb8263fe62b05ad63e5ceb5875791Robert Baldygastatic void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg); 1016ab93e014f35374a8169b0f465fccee69e04ea34cRobert Baldyga 10175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1018c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * s3c_hsotg_stall_ep0 - stall ep0 1019c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * @hsotg: The device state 1020c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * 1021c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * Set stall for ep0 as response for setup request. 1022c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1023e9ebe7c3b76c24fd5bc2f3b99db453ea71c3072bJingoo Hanstatic void s3c_hsotg_stall_ep0(struct s3c_hsotg *hsotg) 1024e9ebe7c3b76c24fd5bc2f3b99db453ea71c3072bJingoo Han{ 1025c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 1026c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga u32 reg; 1027c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga u32 ctrl; 1028c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1029c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in); 1030c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga reg = (ep0->dir_in) ? DIEPCTL0 : DOEPCTL0; 1031c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1032c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga /* 1033c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * DxEPCTL_Stall will be cleared by EP once it has 1034c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * taken effect, so no need to clear later. 1035c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1036c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1037c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga ctrl = readl(hsotg->regs + reg); 103847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_STALL; 103947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; 1040c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga writel(ctrl, hsotg->regs + reg); 1041c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1042c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_dbg(hsotg->dev, 104347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "written DXEPCTL=0x%08x to %08x (DXEPCTL=0x%08x)\n", 1044c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga ctrl, reg, readl(hsotg->regs + reg)); 1045c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1046c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga /* 1047c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * complete won't be called, so we enqueue 1048c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * setup request here 1049c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1050c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_enqueue_setup(hsotg); 1051c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga} 1052c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1053c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga/** 10545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_control - process a control request 10555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 10565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: The control request received 10575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 10585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The controller has received the SETUP phase of a control request, and 10595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * needs to work out what to do next (and whether to pass it on to the 10605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * gadget driver). 10615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 10625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_process_control(struct s3c_hsotg *hsotg, 10635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 10645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 10655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 10665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret = 0; 10675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 dcfg; 10685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->sent_zlp = 0; 10705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ctrl Req=%02x, Type=%02x, V=%04x, L=%04x\n", 10725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl->bRequest, ctrl->bRequestType, 10735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl->wValue, ctrl->wLength); 10745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 10768b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * record the direction of the request, for later use when enquing 10778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * packets onto EP0. 10788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 10795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->dir_in = (ctrl->bRequestType & USB_DIR_IN) ? 1 : 0; 10815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ctrl: dir_in=%d\n", ep0->dir_in); 10825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 10848b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we've no data with this request, then the last part of the 10858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transaction is going to implicitly be IN. 10868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 10875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ctrl->wLength == 0) 10885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->dir_in = 1; 10895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { 10915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (ctrl->bRequest) { 10925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_SET_ADDRESS: 1093d18f7116a5ddb8263fe62b05ad63e5ceb5875791Robert Baldyga s3c_hsotg_disconnect(hsotg); 109494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dcfg = readl(hsotg->regs + DCFG); 109547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dcfg &= ~DCFG_DEVADDR_MASK; 1096d5dbd3f7d82223b59dc2200c0e9f4f95665a21a4Paul Zimmerman dcfg |= (le16_to_cpu(ctrl->wValue) << 1097d5dbd3f7d82223b59dc2200c0e9f4f95665a21a4Paul Zimmerman DCFG_DEVADDR_SHIFT) & DCFG_DEVADDR_MASK; 109894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(dcfg, hsotg->regs + DCFG); 10995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "new address %d\n", ctrl->wValue); 11015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); 11035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 11045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_GET_STATUS: 11065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_process_req_status(hsotg, ctrl); 11075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 11085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_CLEAR_FEATURE: 11105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_SET_FEATURE: 11115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_process_req_feature(hsotg, ctrl); 11125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 11135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* as a fallback, try delivering it to the driver to deal with */ 11175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret == 0 && hsotg->driver) { 111993f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_unlock(&hsotg->lock); 11205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = hsotg->driver->setup(&hsotg->gadget, ctrl); 112193f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_lock(&hsotg->lock); 11225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) 11235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "driver->setup() ret %d\n", ret); 11245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 11278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the request is either unhandlable, or is not formatted correctly 11285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so respond with a STALL for the status stage to indicate failure. 11295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1131c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (ret < 0) 1132c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_stall_ep0(hsotg); 11335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 11345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 11365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_setup - completion of a setup transfer 11375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the request was on. 11385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request completed. 11395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 11405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Called on completion of any requests the driver itself submitted for 11415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * EP0 setup packets 11425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_setup(struct usb_ep *ep, 11445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 11455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 11465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 11475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 11485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->status < 0) { 11505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: failed %d\n", __func__, req->status); 11515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 11525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 115493f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_lock(&hsotg->lock); 11555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->actual == 0) 11565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 11575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 11585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_process_control(hsotg, req->buf); 115993f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_unlock(&hsotg->lock); 11605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 11615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 11635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_enqueue_setup - start a request for EP0 packets 11645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 11655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 11665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Enqueue a request on EP0 if necessary to received any SETUP packets 11675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * received from the host. 11685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg) 11705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 11715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = hsotg->ctrl_req; 11725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 11735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 11745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: queueing setup request\n", __func__); 11765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero = 0; 11785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->length = 8; 11795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->buf = hsotg->ctrl_buff; 11805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->complete = s3c_hsotg_complete_setup; 11815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!list_empty(&hs_req->queue)) { 11835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s already queued???\n", __func__); 11845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 11855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].dir_in = 0; 11885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_ep_queue(&hsotg->eps[0].ep, req, GFP_ATOMIC); 11905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 11915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed queue (%d)\n", __func__, ret); 11928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 11938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Don't think there's much we can do other than watch the 11948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * driver fail. 11958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 11965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 11985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 12005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_request - complete a request given to us 12015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 12025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint the request was on. 12035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to complete. 12045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @result: The result code (0 => Ok, otherwise errno) 12055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The given request has finished, so call the necessary completion 12075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * if it has one and then look to see if we can start a new request 12085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on the endpoint. 12095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, expects the ep to already be locked as appropriate. 12118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg, 12135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 12145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req, 12155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result) 12165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 12175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool restart; 12185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 12205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: nothing to complete?\n", __func__); 12215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 12225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "complete: ep %p %s, req %p, %d => %p\n", 12255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep, hs_ep->ep.name, hs_req, result, hs_req->req.complete); 12265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * only replace the status if we've not already set an error 12298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * from a previous transaction 12308b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.status == -EINPROGRESS) 12335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.status = result; 12345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->req = NULL; 12365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_del_init(&hs_req->queue); 12375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) 12395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_unmap_dma(hsotg, hs_ep, hs_req); 12405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12418b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12428b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * call the complete request with the locks off, just in case the 12438b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * request tries to queue more work for this endpoint. 12448b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.complete) { 124722258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock(&hsotg->lock); 12485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.complete(&hs_ep->ep, &hs_req->req); 124922258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock(&hsotg->lock); 12505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Look to see if there is anything else to do. Note, the completion 12545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the previous request may have caused a new request to be started 12558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * so be careful when doing this. 12568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_ep->req && result >= 0) { 12595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks restart = !list_empty(&hs_ep->queue); 12605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (restart) { 12615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req = get_ep_head(hs_ep); 12625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, false); 12635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 12665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 12685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_rx_data - receive data from the FIFO for an endpoint 12695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 12705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep_idx: The endpoint index for the data 12715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @size: The size of data in the fifo, in bytes 12725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The FIFO status shows there is data to read from the FIFO for a given 12745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * endpoint, so sort out whether we need to read the data into a request 12755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that has been made for that endpoint. 12765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 12775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size) 12785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 12795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep_idx]; 12805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 128194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski void __iomem *fifo = hsotg->regs + EPFIFO(ep_idx); 12825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int to_read; 12835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int max_req; 12845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int read_ptr; 12855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 128622258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski 12875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 128894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epctl = readl(hsotg->regs + DOEPCTL(ep_idx)); 12895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ptr; 12905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, 129247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "%s: FIFO %d bytes on ep%d but no req (DXEPCTl=0x%08x)\n", 12935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, size, ep_idx, epctl); 12945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* dump the data from the FIFO, we've nothing we can do */ 12965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ptr = 0; ptr < size; ptr += 4) 12975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks (void)readl(fifo); 12985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_read = size; 13035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks read_ptr = hs_req->req.actual; 13045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks max_req = hs_req->req.length - read_ptr; 13055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1306a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks dev_dbg(hsotg->dev, "%s: read %d/%d, done %d/%d\n", 1307a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks __func__, to_read, max_req, read_ptr, hs_req->req.length); 1308a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks 13095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_read > max_req) { 13108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 13118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * more data appeared than we where willing 13125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to deal with in this request. 13135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 13145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* currently we don't deal this */ 13165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON_ONCE(1); 13175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->total_data += to_read; 13205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual += to_read; 13215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_read = DIV_ROUND_UP(to_read, 4); 13225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 13248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, we might over-write the buffer end by 3 bytes depending on 13258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * alignment of the data. 13268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 13271a7ed5bec407478b9ce5e3267708110277851614Matt Porter ioread32_rep(fifo, hs_req->req.buf + read_ptr, to_read); 13285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 13295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 13315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_send_zlp - send zero-length packet on control endpoint 13325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 13335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request currently on this endpoint 13345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Generate a zero-length IN packet request for terminating a SETUP 13365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transaction. 13375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, since we don't write any data to the TxFIFO, then it is 133925985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * currently believed that we do not need to wait for any space in 13405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the TxFIFO. 13415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 13425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_send_zlp(struct s3c_hsotg *hsotg, 13435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req) 13445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 13455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 13465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) { 13485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: no request?\n", __func__); 13495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->req.length == 0) { 13535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].sent_zlp = 1; 13545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 13555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].dir_in = 1; 13595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].sent_zlp = 1; 13605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "sending zero-length packet\n"); 13625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* issue a zero-sized packet to terminate this */ 136447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | 136547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPTSIZ_XFERSIZE(0), hsotg->regs + DIEPTSIZ(0)); 13665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 136794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski ctrl = readl(hsotg->regs + DIEPCTL0); 136847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ 136947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ 137047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_USBACTEP; 137194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(ctrl, hsotg->regs + DIEPCTL0); 13725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 13735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 13755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_handle_outdone - handle receiving OutDone/SetupDone from RXFIFO 13765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 13775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @epnum: The endpoint received from 13785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @was_setup: Set if processing a SetupDone event. 13795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The RXFIFO has delivered an OutDone event, which means that the data 13815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transfer for an OUT endpoint has been completed, either by a short 13825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * packet or by the finish of a transfer. 13838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 13845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg, 13855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum, bool was_setup) 13865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 138794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DOEPTSIZ(epnum)); 13885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[epnum]; 13895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 13905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = &hs_req->req; 139147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen unsigned size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 13925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result = 0; 13935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 13955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: no request active\n", __func__); 13965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) { 14005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned size_done; 14015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Calculate the size of the transfer by checking how much 14045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is left in the endpoint size register and then working it 14055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * out from the amount we loaded for the transfer. 14065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We need to do this as DMA pointers are always 32bit aligned 14085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so may overshoot/undershoot the transfer. 14095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 14105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 14125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done += hs_ep->last_load; 14135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->actual = size_done; 14155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1417a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks /* if there is more request to do, schedule new transfer */ 1418a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks if (req->actual < req->length && size_left == 0) { 1419a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); 1420a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks return; 142171225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski } else if (epnum == 0) { 142271225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski /* 142371225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski * After was_setup = 1 => 142471225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski * set CNAK for non Setup requests 142571225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski */ 142671225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski hsotg->setup = was_setup ? 0 : 1; 1427a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks } 1428a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks 14295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->actual < req->length && req->short_not_ok) { 14305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: got %d/%d (short not ok) => error\n", 14315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, req->actual, req->length); 14325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14338b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14348b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * todo - what should we return here? there's no one else 14358b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * even bothering to check the status. 14368b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum == 0) { 1440d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* 1441d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Condition req->complete != s3c_hsotg_complete_setup says: 1442d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * send ZLP when we have an asynchronous request from gadget 1443d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski */ 14445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!was_setup && req->complete != s3c_hsotg_complete_setup) 14455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_send_zlp(hsotg, hs_req); 14465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14485ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result); 14495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 14505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 14525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_read_frameno - read current frame number 14535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 14545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return the current frame number 14568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic u32 s3c_hsotg_read_frameno(struct s3c_hsotg *hsotg) 14585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 14595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 dsts; 14605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 146194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts = readl(hsotg->regs + DSTS); 146294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts &= DSTS_SOFFN_MASK; 146394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts >>= DSTS_SOFFN_SHIFT; 14645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return dsts; 14665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 14675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 14695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_handle_rx - RX FIFO has data 14705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 14715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The IRQ handler has detected that the RX FIFO has some data in it 14735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that requires processing, so find out what is in there and do the 14745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * appropriate read. 14755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 147625985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * The RXFIFO is a true FIFO, the packets coming out are still in packet 14775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * chunks, so if you have x packets received on an endpoint you'll get x 14785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * FIFO events delivered, each with a packet's worth of data in it. 14795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * When using DMA, we should not be processing events from the RXFIFO 14815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * as the actual data should be sent to the memory directly and we turn 14825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on the completion interrupts to get notifications of transfer completion. 14835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 14840978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brownstatic void s3c_hsotg_handle_rx(struct s3c_hsotg *hsotg) 14855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 148694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 grxstsr = readl(hsotg->regs + GRXSTSP); 14875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epnum, status, size; 14885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(using_dma(hsotg)); 14905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 149147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epnum = grxstsr & GRXSTS_EPNUM_MASK; 149247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen status = grxstsr & GRXSTS_PKTSTS_MASK; 14935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 149447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size = grxstsr & GRXSTS_BYTECNT_MASK; 149547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size >>= GRXSTS_BYTECNT_SHIFT; 14965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (1) 14985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: GRXSTSP=0x%08x (%d@%d)\n", 14995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, grxstsr, size, epnum); 15005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 150147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen switch ((status & GRXSTS_PKTSTS_MASK) >> GRXSTS_PKTSTS_SHIFT) { 150247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_GLOBALOUTNAK: 150347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dev_dbg(hsotg->dev, "GLOBALOUTNAK\n"); 15045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 150647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_OUTDONE: 15075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "OutDone (Frame=0x%08x)\n", 15085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg)); 15095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!using_dma(hsotg)) 15115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, epnum, false); 15125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 151447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_SETUPDONE: 15155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 15165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "SetupDone (Frame=0x%08x, DOPEPCTL=0x%08x)\n", 15175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg), 151894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL(0))); 15195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, epnum, true); 15215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 152347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_OUTRX: 15245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_rx_data(hsotg, epnum, size); 15255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 152747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_SETUPRX: 15285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 15295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "SetupRX (Frame=0x%08x, DOPEPCTL=0x%08x)\n", 15305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg), 153194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL(0))); 15325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_rx_data(hsotg, epnum, size); 15345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 15375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: unknown status %08x\n", 15385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, grxstsr); 15395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_dump(hsotg); 15415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 15445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 15465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ep0_mps - turn max packet size into register setting 15475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @mps: The maximum packet size in bytes. 15488b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 15495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic u32 s3c_hsotg_ep0_mps(unsigned int mps) 15505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 15515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (mps) { 15525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 64: 155394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_64; 15545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 32: 155594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_32; 15565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 16: 155794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_16; 15585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 8: 155994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_8; 15605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* bad max packet size, warn and return invalid result */ 15635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 15645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return (u32)-1; 15655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 15665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 15685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_set_ep_maxpacket - set endpoint's max-packet field 15695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 15705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The index number of the endpoint 15715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @mps: The maximum packet size in bytes 15725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 15735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Configure the maximum packet size for the given endpoint, updating 15745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the hardware control registers to reflect this. 15755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 15765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg, 15775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int ep, unsigned int mps) 15785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 15795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep]; 15805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 15815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 mpsval; 15824fca54aa5829328a356aea31895b817dacba2861Robert Baldyga u32 mcval; 15835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 reg; 15845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep == 0) { 15865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* EP0 is a special case */ 15875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks mpsval = s3c_hsotg_ep0_mps(mps); 15885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (mpsval > 3) 15895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto bad_mps; 1590e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga hs_ep->ep.maxpacket = mps; 15914fca54aa5829328a356aea31895b817dacba2861Robert Baldyga hs_ep->mc = 1; 15925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 159347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen mpsval = mps & DXEPCTL_MPS_MASK; 1594e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga if (mpsval > 1024) 15955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto bad_mps; 15964fca54aa5829328a356aea31895b817dacba2861Robert Baldyga mcval = ((mps >> 11) & 0x3) + 1; 15974fca54aa5829328a356aea31895b817dacba2861Robert Baldyga hs_ep->mc = mcval; 15984fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (mcval > 3) 15994fca54aa5829328a356aea31895b817dacba2861Robert Baldyga goto bad_mps; 1600e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga hs_ep->ep.maxpacket = mpsval; 16015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 16025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 16048b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * update both the in and out endpoint controldir_ registers, even 16058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if one of the directions may not be in use. 16068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 16075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 160894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski reg = readl(regs + DIEPCTL(ep)); 160947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen reg &= ~DXEPCTL_MPS_MASK; 16105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reg |= mpsval; 161194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(reg, regs + DIEPCTL(ep)); 16125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1613659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov if (ep) { 161494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski reg = readl(regs + DOEPCTL(ep)); 161547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen reg &= ~DXEPCTL_MPS_MASK; 1616659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov reg |= mpsval; 161794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(reg, regs + DOEPCTL(ep)); 1618659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov } 16195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 16215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksbad_mps: 16235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "ep%d: bad mps of %d\n", ep, mps); 16245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 16255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16269c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov/** 16279c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * s3c_hsotg_txfifo_flush - flush Tx FIFO 16289c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @hsotg: The driver state 16299c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @idx: The index for the endpoint (0..15) 16309c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 16319c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirovstatic void s3c_hsotg_txfifo_flush(struct s3c_hsotg *hsotg, unsigned int idx) 16329c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov{ 16339c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int timeout; 16349c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int val; 16359c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 163647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_TXFNUM(idx) | GRSTCTL_TXFFLSH, 163794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GRSTCTL); 16389c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16399c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* wait until the fifo is flushed */ 16409c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov timeout = 100; 16419c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16429c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov while (1) { 164394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(hsotg->regs + GRSTCTL); 16449c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 164547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((val & (GRSTCTL_TXFFLSH)) == 0) 16469c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov break; 16479c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16489c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (--timeout == 0) { 16499c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov dev_err(hsotg->dev, 16509c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov "%s: timeout flushing fifo (GRSTCTL=%08x)\n", 16519c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov __func__, val); 16529c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 16539c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16549c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov udelay(1); 16559c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 16569c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov} 16575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 16595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_trytx - check to see if anything needs transmitting 16605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 16615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The driver endpoint to check. 16625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 16635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Check to see if there is a request that has data to send, and if so 16645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * make an attempt to write data into the FIFO. 16655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 16665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_trytx(struct s3c_hsotg *hsotg, 16675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep) 16685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 16695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 16705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1671afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga if (!hs_ep->dir_in || !hs_req) { 1672afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga /** 1673afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga * if request is not enqueued, we disable interrupts 1674afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga * for endpoints, excepting ep0 1675afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga */ 1676afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga if (hs_ep->index != 0) 1677afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, 1678afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga hs_ep->dir_in, 0); 16795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 1680afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga } 16815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.actual < hs_req->req.length) { 16835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "trying to write more for ep%d\n", 16845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->index); 16855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); 16865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 16875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 16895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 16905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 16925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_in - complete IN transfer 16935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 16945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint that has just completed. 16955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 16965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * An IN transfer has been completed, update the transfer's state and then 16975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * call the relevant completion routines. 16985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 16995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg, 17005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep) 17015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 17025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 170394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DIEPTSIZ(hs_ep->index)); 17045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_left, size_done; 17055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 17075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "XferCompl but no req\n"); 17085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 17095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 17105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1711d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* Finish ZLP handling for IN EP0 transactions */ 1712d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski if (hsotg->eps[0].sent_zlp) { 1713d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "zlp packet received\n"); 17145ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); 1715d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski return; 1716d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski } 1717d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 17188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 17198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Calculate the size of the transfer by checking how much is left 17205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * in the endpoint size register and then working it out from 17215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the amount we loaded for the transfer. 17225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 17235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We do this even for DMA, as the transfer may have incremented 17245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * past the end of the buffer (DMA transfers are always 32bit 17255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * aligned). 17265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 17275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 172847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 17295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 17315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done += hs_ep->last_load; 17325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.actual != size_done) 17345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: adjusting size done %d => %d\n", 17355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, hs_req->req.actual, size_done); 17365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual = size_done; 1738d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "req->length:%d req->actual:%d req->zero:%d\n", 1739d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski hs_req->req.length, hs_req->req.actual, hs_req->req.zero); 1740d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 1741d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* 1742d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Check if dealing with Maximum Packet Size(MPS) IN transfer at EP0 1743d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * When sent data is a multiple MPS size (e.g. 64B ,128B ,192B 1744d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * ,256B ... ), after last MPS sized packet send IN ZLP packet to 1745d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * inform the host that no more data is available. 1746d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * The state of req.zero member is checked to be sure that the value to 1747d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * send is smaller than wValue expected from host. 1748d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Check req.length to NOT send another ZLP when the current one is 1749d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * under completion (the one for which this completion has been called). 1750d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski */ 1751d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski if (hs_req->req.length && hs_ep->index == 0 && hs_req->req.zero && 1752d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski hs_req->req.length == hs_req->req.actual && 1753d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski !(hs_req->req.length % hs_ep->ep.maxpacket)) { 1754d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 1755d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "ep0 zlp IN packet sent\n"); 1756d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski s3c_hsotg_send_zlp(hsotg, hs_req); 17575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1758d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski return; 1759d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski } 17605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!size_left && hs_req->req.actual < hs_req->req.length) { 17625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__); 17635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); 17645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else 17655ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); 17665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 17675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 17695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_epint - handle an in/out endpoint interrupt 17705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 17715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @idx: The index for the endpoint (0..15) 17725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @dir_in: Set if this is an IN endpoint 17735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 17745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Process and clear any interrupt pending for an individual endpoint 17758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 17765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx, 17775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in) 17785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 17795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[idx]; 178094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epint_reg = dir_in ? DIEPINT(idx) : DOEPINT(idx); 178194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epctl_reg = dir_in ? DIEPCTL(idx) : DOEPCTL(idx); 178294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsiz_reg = dir_in ? DIEPTSIZ(idx) : DOEPTSIZ(idx); 17835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ints; 17841479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga u32 ctrl; 17855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ints = readl(hsotg->regs + epint_reg); 17871479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga ctrl = readl(hsotg->regs + epctl_reg); 17885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1789a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov /* Clear endpoint interrupts */ 1790a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov writel(ints, hsotg->regs + epint_reg); 1791a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 17925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep%d(%s) DxEPINT=0x%08x\n", 17935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx, dir_in ? "in" : "out", ints); 17945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 179547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_XFERCOMPL) { 17961479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (hs_ep->isochronous && hs_ep->interval == 1) { 179747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ctrl & DXEPCTL_EOFRNUM) 179847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SETEVENFR; 17991479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga else 180047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SETODDFR; 18011479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga writel(ctrl, hsotg->regs + epctl_reg); 18021479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga } 18031479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga 18045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 180547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "%s: XferCompl: DxEPCTL=0x%08x, DXEPTSIZ=%08x\n", 18065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctl_reg), 18075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks readl(hsotg->regs + epsiz_reg)); 18085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we get OutDone from the FIFO, so we only need to look 18118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * at completing IN requests here 18128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 18135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) { 18145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_in(hsotg, hs_ep); 18155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1816c9a64ea884b8b40d70077ffe1e93081f2190f072Ben Dooks if (idx == 0 && !hs_ep->req) 18175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 18185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else if (using_dma(hsotg)) { 18198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * We're using DMA, we need to fire an OutDone here 18218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * as we ignore the RXFIFO. 18228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 18235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, idx, false); 18255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 182847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_EPDISBLD) { 18295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: EPDisbld\n", __func__); 18305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18319c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (dir_in) { 18329c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int epctl = readl(hsotg->regs + epctl_reg); 18339c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 18349c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov s3c_hsotg_txfifo_flush(hsotg, idx); 18359c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 183647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((epctl & DXEPCTL_STALL) && 183747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen (epctl & DXEPCTL_EPTYPE_BULK)) { 183894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski int dctl = readl(hsotg->regs + DCTL); 18399c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 184047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dctl |= DCTL_CGNPINNAK; 184194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(dctl, hsotg->regs + DCTL); 18429c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18439c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18449c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18459c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 184647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_AHBERR) 18475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: AHBErr\n", __func__); 18485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 184947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_SETUP) { /* Setup or Timeout */ 18505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: Setup/Timeout\n", __func__); 18515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg) && idx == 0) { 18538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * this is the notification we've received a 18555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * setup packet. In non-DMA mode we'd get this 18565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * from the RXFIFO, instead we need to process 18578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the setup here. 18588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 18595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) 18615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON_ONCE(1); 18625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 18635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, 0, true); 18645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 186747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_BACK2BACKSETUP) 18685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: B2BSetup/INEPNakEff\n", __func__); 18695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18701479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (dir_in && !hs_ep->isochronous) { 18718b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* not sure if this is important, but we'll clear it anyway */ 187247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DIEPMSK_INTKNTXFEMPMSK) { 18735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep%d: INTknTXFEmpMsk\n", 18745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx); 18755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* this probably means something bad is happening */ 187847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DIEPMSK_INTKNEPMISMSK) { 18795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: ep%d: INTknEP\n", 18805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx); 18815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 188210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 188310aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks /* FIFO has space or is empty (see GAHBCFG) */ 188410aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (hsotg->dedicated_fifos && 188547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ints & DIEPMSK_TXFIFOEMPTY) { 188610aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks dev_dbg(hsotg->dev, "%s: ep%d: TxFIFOEmpty\n", 188710aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks __func__, idx); 188870fa030ffb652ace81dd5bcab01255b49723caecAnton Tikhomirov if (!using_dma(hsotg)) 188970fa030ffb652ace81dd5bcab01255b49723caecAnton Tikhomirov s3c_hsotg_trytx(hsotg, hs_ep); 189010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks } 18915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 18935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 18955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq_enumdone - Handle EnumDone interrupt (enumeration done) 18965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 18975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 18985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Handle updating the device settings after the enumeration phase has 18995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * been completed. 19008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg) 19025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 190394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 dsts = readl(hsotg->regs + DSTS); 19049b2667f1f30e91becc3751acd5cffaedcf68e098Jingoo Han int ep0_mps = 0, ep_mps = 8; 19055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19078b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * This should signal the finish of the enumeration phase 19085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the USB handshaking, so we should now know what rate 19098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we connected at. 19108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "EnumDone (DSTS=0x%08x)\n", dsts); 19135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19158b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, since we're limited by the size of transfer on EP0, and 19165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * it seems IN transfers must be a even number of packets we do 19178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * not advertise a 64byte MPS on EP0. 19188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* catch both EnumSpd_FS and EnumSpd_FS48 */ 192147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen switch (dsts & DSTS_ENUMSPD_MASK) { 192247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_FS: 192347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_FS48: 19245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_FULL; 19255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0_mps = EP0_MPS_LIMIT; 1926295538ff7e5389d5aee5845c548f114b793d60c9Robert Baldyga ep_mps = 1023; 19275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 19285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 192947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_HS: 19305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_HIGH; 19315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0_mps = EP0_MPS_LIMIT; 1932295538ff7e5389d5aee5845c548f114b793d60c9Robert Baldyga ep_mps = 1024; 19335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 19345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 193547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_LS: 19365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_LOW; 19378b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19388b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, we don't actually support LS in this driver at the 19395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * moment, and the documentation seems to imply that it isn't 19405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * supported by the PHYs on some of the devices. 19415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 19425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 19435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 1944e538dfdae85244fd2c4231725d82cc1f1bc4942cMichal Nazarewicz dev_info(hsotg->dev, "new device is %s\n", 1945e538dfdae85244fd2c4231725d82cc1f1bc4942cMichal Nazarewicz usb_speed_string(hsotg->gadget.speed)); 19465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19478b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19488b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we should now know the maximum packet size for an 19498b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * endpoint, so set the endpoints to a default value. 19508b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep0_mps) { 19535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int i; 19545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps); 1955b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (i = 1; i < hsotg->num_of_eps; i++) 19565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps); 19575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 19585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* ensure after enumeration our EP0 is active */ 19605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 19625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 196494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 196594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 19665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 19675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 19695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * kill_all_requests - remove all requests from the endpoint's queue 19705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 19715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the requests may be on. 19725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @result: The result code to use. 19735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @force: Force removal of any current requests 19745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 19755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Go through the requests on the given endpoint and mark them 19765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * completed with the given result code. 19775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 19785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void kill_all_requests(struct s3c_hsotg *hsotg, 19795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep, 19805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result, bool force) 19815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 19825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req, *treq; 19835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry_safe(req, treq, &ep->queue, queue) { 19858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * currently, we can't do much about an already 19878b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * running request on an in endpoint 19888b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep->req == req && ep->dir_in && !force) 19915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 19925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_request(hsotg, ep, req, 19945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks result); 19955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 1996e9ebe7c3b76c24fd5bc2f3b99db453ea71c3072bJingoo Han if (hsotg->dedicated_fifos) 1997b963a81a4803fb387d6551ea0fb66876e0c8ff12Robert Baldyga if ((readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4 < 3072) 1998b963a81a4803fb387d6551ea0fb66876e0c8ff12Robert Baldyga s3c_hsotg_txfifo_flush(hsotg, ep->index); 19995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 20025e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * s3c_hsotg_disconnect - disconnect service 20035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 20045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 20055e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * The device has been disconnected. Remove all current 20065e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * transactions and signal the gadget driver that this 20075e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * has happened. 20088b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 20095e891342fd0761fed36c187587115e706c0fa358Lukasz Majewskistatic void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg) 20105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 20115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned ep; 20125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2013b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (ep = 0; ep < hsotg->num_of_eps; ep++) 20145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kill_all_requests(hsotg, &hsotg->eps[ep], -ESHUTDOWN, true); 20155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, disconnect); 20175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 20205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq_fifoempty - TX FIFO empty interrupt handler 20215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state: 20225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @periodic: True if this is a periodic FIFO interrupt 20235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 20245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_irq_fifoempty(struct s3c_hsotg *hsotg, bool periodic) 20255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 20265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 20275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epno, ret; 20285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* look through for any more data to transmit */ 20305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2031b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epno = 0; epno < hsotg->num_of_eps; epno++) { 20325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = &hsotg->eps[epno]; 20335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep->dir_in) 20355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 20365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((periodic && !ep->periodic) || 20385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks (!periodic && ep->periodic)) 20395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 20405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_trytx(hsotg, ep); 20425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) 20435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 20445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 20455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* IRQ flags which will trigger a retry around the IRQ loop */ 204847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen#define IRQ_RETRY_MASK (GINTSTS_NPTXFEMP | \ 204947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_PTXFEMP | \ 205047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_RXFLVL) 20515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2053308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * s3c_hsotg_corereset - issue softreset to the core 2054308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * @hsotg: The device state 2055308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * 2056308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * Issue a soft reset to the core, and await the core finishing it. 20578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2058308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewskistatic int s3c_hsotg_corereset(struct s3c_hsotg *hsotg) 2059308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski{ 2060308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski int timeout; 2061308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski u32 grstctl; 2062308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2063308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "resetting core\n"); 2064308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2065308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* issue soft reset */ 206647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_CSFTRST, hsotg->regs + GRSTCTL); 2067308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 20682868fea2d615d9f445a0ccaf988e1418a9787ebeDu, Changbin timeout = 10000; 2069308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski do { 207094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski grstctl = readl(hsotg->regs + GRSTCTL); 207147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen } while ((grstctl & GRSTCTL_CSFTRST) && timeout-- > 0); 2072308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 207347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (grstctl & GRSTCTL_CSFTRST) { 2074308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_err(hsotg->dev, "Failed to get CSftRst asserted\n"); 2075308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return -EINVAL; 2076308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2077308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 20782868fea2d615d9f445a0ccaf988e1418a9787ebeDu, Changbin timeout = 10000; 2079308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2080308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski while (1) { 208194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 grstctl = readl(hsotg->regs + GRSTCTL); 2082308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2083308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (timeout-- < 0) { 2084308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_info(hsotg->dev, 2085308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski "%s: reset failed, GRSTCTL=%08x\n", 2086308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski __func__, grstctl); 2087308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return -ETIMEDOUT; 2088308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2089308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 209047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (!(grstctl & GRSTCTL_AHBIDLE)) 2091308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski continue; 2092308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2093308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski break; /* reset done */ 2094308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2095308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2096308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "reset successful\n"); 2097308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return 0; 2098308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski} 2099308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 21008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 21018b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_core_init - issue softreset to the core 21028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The device state 21038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 21048b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Issue a soft reset to the core, and await the core finishing it. 21058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2106308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewskistatic void s3c_hsotg_core_init(struct s3c_hsotg *hsotg) 2107308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski{ 2108308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_corereset(hsotg); 2109308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2110308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2111308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * we must now enable ep0 ready for host detection and then 2112308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * set configuration. 2113308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2114308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2115308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* set the PLL on, remove the HNP/SRP and set the PHY */ 211647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(hsotg->phyif | GUSBCFG_TOUTCAL(7) | 211794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski (0x5 << 10), hsotg->regs + GUSBCFG); 2118308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2119308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_init_fifo(hsotg); 2120308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 212147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2122308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 212347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(1 << 18 | DCFG_DEVSPD_HS, hsotg->regs + DCFG); 2124308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2125308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Clear any pending OTG interrupts */ 212694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0xffffffff, hsotg->regs + GOTGINT); 2127308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2128308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Clear any pending interrupts */ 212994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0xffffffff, hsotg->regs + GINTSTS); 2130308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 213147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ERLYSUSP | GINTSTS_SESSREQINT | 213247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_GOUTNAKEFF | GINTSTS_GINNAKEFF | 213347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_CONIDSTSCHNG | GINTSTS_USBRST | 213447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_ENUMDONE | GINTSTS_OTGINT | 213547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_USBSUSP | GINTSTS_WKUPINT, 213647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + GINTMSK); 2137308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2138308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (using_dma(hsotg)) 213947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN | 214047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_HBSTLEN_INCR4, 214194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GAHBCFG); 2142308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski else 214347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(((hsotg->dedicated_fifos) ? (GAHBCFG_NP_TXF_EMP_LVL | 214447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_P_TXF_EMP_LVL) : 0) | 214547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_GLBL_INTR_EN, 21468acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga hsotg->regs + GAHBCFG); 2147308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2148308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 21498acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * If INTknTXFEmpMsk is enabled, it's important to disable ep interrupts 21508acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * when we have no data to transfer. Otherwise we get being flooded by 21518acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * interrupts. 2152308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2153308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 215447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(((hsotg->dedicated_fifos) ? DIEPMSK_TXFIFOEMPTY | 215547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_INTKNTXFEMPMSK : 0) | 215647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK | 215747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | 215847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_INTKNEPMISMSK, 215947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DIEPMSK); 2160308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2161308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2162308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * don't need XferCompl, we get that from RXFIFO in slave mode. In 2163308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * DMA mode we may need this. 2164308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 216547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel((using_dma(hsotg) ? (DIEPMSK_XFERCOMPLMSK | 216647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_TIMEOUTMSK) : 0) | 216747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_EPDISBLDMSK | DOEPMSK_AHBERRMSK | 216847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_SETUPMSK, 216947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DOEPMSK); 2170308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 217194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0, hsotg->regs + DAINTMSK); 2172308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2173308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 217494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 217594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 2176308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2177308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* enable in and out endpoint interrupts */ 217847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_OEPINT | GINTSTS_IEPINT); 2179308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2180308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2181308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * Enable the RXFIFO when in slave mode, as this is how we collect 2182308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * the data. In DMA mode, we get events from the FIFO but also 2183308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * things we cannot process, so do not use it. 2184308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2185308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (!using_dma(hsotg)) 218647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_RXFLVL); 2187308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2188308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Enable interrupts for EP0 in and out */ 2189308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_ctrl_epint(hsotg, 0, 0, 1); 2190308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_ctrl_epint(hsotg, 0, 1, 1); 2191308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 219247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); 2193308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski udelay(10); /* see openiboot */ 219447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __bic32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); 2195308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 219694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_dbg(hsotg->dev, "DCTL=0x%08x\n", readl(hsotg->regs + DCTL)); 2197308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2198308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 219994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski * DxEPCTL_USBActEp says RO in manual, but seems to be set by 2200308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * writing to the EPCTL register.. 2201308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2202308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2203308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* set to read 1 8byte packet */ 220447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | 220547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPTSIZ_XFERSIZE(8), hsotg->regs + DOEPTSIZ0); 2206308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2207308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | 220847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_CNAK | DXEPCTL_EPENA | 220947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_USBACTEP, 221094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DOEPCTL0); 2211308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2212308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* enable, but don't activate EP0in */ 2213308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | 221447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_USBACTEP, hsotg->regs + DIEPCTL0); 2215308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2216308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_enqueue_setup(hsotg); 2217308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2218308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 221994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 222094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 2221308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2222308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* clear global NAKs */ 222347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGOUTNAK | DCTL_CGNPINNAK, 222494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DCTL); 2225308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2226308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* must be at-least 3ms to allow bus to see disconnect */ 2227308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski mdelay(3); 2228308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2229308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* remove the soft-disconnect and let's go */ 223047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __bic32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2231308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski} 2232308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2233308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski/** 22345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq - handle device interrupt 22355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @irq: The IRQ number triggered 22365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @pw: The pw value when registered the handler. 22375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 22385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic irqreturn_t s3c_hsotg_irq(int irq, void *pw) 22395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 22405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = pw; 22415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int retry_count = 8; 22425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 gintsts; 22435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 gintmsk; 22445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22455ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock(&hsotg->lock); 22465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksirq_retry: 224794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski gintsts = readl(hsotg->regs + GINTSTS); 224894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski gintmsk = readl(hsotg->regs + GINTMSK); 22495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %08x %08x (%08x) retry %d\n", 22515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, gintsts, gintsts & gintmsk, gintmsk, retry_count); 22525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks gintsts &= gintmsk; 22545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 225547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_OTGINT) { 225694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 otgint = readl(hsotg->regs + GOTGINT); 22575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "OTGInt: %08x\n", otgint); 22595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 226094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(otgint, hsotg->regs + GOTGINT); 22615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 226347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_SESSREQINT) { 22645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: SessReqInt\n", __func__); 226547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_SESSREQINT, hsotg->regs + GINTSTS); 22665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 226847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_ENUMDONE) { 226947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ENUMDONE, hsotg->regs + GINTSTS); 2270a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2271a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_irq_enumdone(hsotg); 22725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 227447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_CONIDSTSCHNG) { 22755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ConIDStsChg (DSTS=0x%08x, GOTCTL=%08x)\n", 227694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DSTS), 227794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GOTGCTL)); 22785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 227947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_CONIDSTSCHNG, hsotg->regs + GINTSTS); 22805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 228247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & (GINTSTS_OEPINT | GINTSTS_IEPINT)) { 228394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 daint = readl(hsotg->regs + DAINT); 22847e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga u32 daintmsk = readl(hsotg->regs + DAINTMSK); 22857e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga u32 daint_out, daint_in; 22865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep; 22875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22887e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga daint &= daintmsk; 228947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen daint_out = daint >> DAINT_OUTEP_SHIFT; 229047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen daint_in = daint & ~(daint_out << DAINT_OUTEP_SHIFT); 22917e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga 22925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: daint=%08x\n", __func__, daint); 22935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ep = 0; ep < 15 && daint_out; ep++, daint_out >>= 1) { 22955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (daint_out & 1) 22965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_epint(hsotg, ep, 0); 22975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ep = 0; ep < 15 && daint_in; ep++, daint_in >>= 1) { 23005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (daint_in & 1) 23015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_epint(hsotg, ep, 1); 23025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 230547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_USBRST) { 230612a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski 230794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 usb_status = readl(hsotg->regs + GOTGCTL); 230812a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski 23095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "%s: USBRst\n", __func__); 23105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "GNPTXSTS=%08x\n", 231194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GNPTXSTS)); 23125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 231347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_USBRST, hsotg->regs + GINTSTS); 2314a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 231594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski if (usb_status & GOTGCTL_BSESVLD) { 231612a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski if (time_after(jiffies, hsotg->last_rst + 231712a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski msecs_to_jiffies(200))) { 23185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 231912a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski kill_all_requests(hsotg, &hsotg->eps[0], 232012a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski -ECONNRESET, true); 23215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 232212a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski s3c_hsotg_core_init(hsotg); 232312a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski hsotg->last_rst = jiffies; 232412a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski } 232512a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski } 23265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* check both FIFOs */ 23295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 233047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_NPTXFEMP) { 23315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "NPTxFEmp\n"); 23325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23338b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 23348b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Disable the interrupt to stop it happening again 23355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * unless one of these endpoint routines decides that 23368b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * it needs re-enabling 23378b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 23385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 233947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_disable_gsint(hsotg, GINTSTS_NPTXFEMP); 23405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_irq_fifoempty(hsotg, false); 23415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 234347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_PTXFEMP) { 23445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "PTxFEmp\n"); 23455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 234694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski /* See note in GINTSTS_NPTxFEmp */ 23475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 234847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_disable_gsint(hsotg, GINTSTS_PTXFEMP); 23495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_irq_fifoempty(hsotg, true); 23505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 235247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_RXFLVL) { 23538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 23548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, since GINTSTS_RxFLvl doubles as FIFO-not-empty, 23555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * we need to retry s3c_hsotg_handle_rx if this is still 23568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set. 23578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 23585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_rx(hsotg); 23605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 236247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_MODEMIS) { 23635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "warning, mode mismatch triggered\n"); 236447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_MODEMIS, hsotg->regs + GINTSTS); 23655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 236747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_USBSUSP) { 236894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_info(hsotg->dev, "GINTSTS_USBSusp\n"); 236947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_USBSUSP, hsotg->regs + GINTSTS); 23705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, suspend); 23725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 237447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_WKUPINT) { 237594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_info(hsotg->dev, "GINTSTS_WkUpIn\n"); 237647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_WKUPINT, hsotg->regs + GINTSTS); 23775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, resume); 23795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 238147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_ERLYSUSP) { 238294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_dbg(hsotg->dev, "GINTSTS_ErlySusp\n"); 238347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ERLYSUSP, hsotg->regs + GINTSTS); 23845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 23878b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * these next two seem to crop-up occasionally causing the core 23885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to shutdown the USB transfer, so try clearing them and logging 23898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the occurrence. 23908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 23915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 239247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_GOUTNAKEFF) { 23935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "GOUTNakEff triggered\n"); 23945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 239547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGOUTNAK, hsotg->regs + DCTL); 2396a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2397a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_dump(hsotg); 23985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 240047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_GINNAKEFF) { 24015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "GINNakEff triggered\n"); 24025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 240347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGNPINNAK, hsotg->regs + DCTL); 2404a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2405a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_dump(hsotg); 24065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24088b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we've had fifo events, we should try and go around the 24108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * loop again to see if there's any point in returning yet. 24118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 24125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (gintsts & IRQ_RETRY_MASK && --retry_count > 0) 24145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto irq_retry; 24155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24165ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock(&hsotg->lock); 24175ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 24185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return IRQ_HANDLED; 24195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 24205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 24225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ep_enable - enable the given endpoint 24235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The USB endpint to configure 24245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @desc: The USB endpoint descriptor to configure with. 24255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 24265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is called from the USB gadget code's usb_ep_enable(). 24278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 24285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_enable(struct usb_ep *ep, 24295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks const struct usb_endpoint_descriptor *desc) 24305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 24315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 24325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 24335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 24345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 24355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 24365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl; 24375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 mps; 24385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in; 243919c190f9e0fe926db28122a804111a7538dc3498Julia Lawall int ret = 0; 24405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 24425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: ep %s: a 0x%02x, attr 0x%02x, mps 0x%04x, intr %d\n", 24435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, ep->name, desc->bEndpointAddress, desc->bmAttributes, 24445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks desc->wMaxPacketSize, desc->bInterval); 24455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* not to be called for EP0 */ 24475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(index == 0); 24485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0; 24505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in != hs_ep->dir_in) { 24515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: direction mismatch!\n", __func__); 24525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 24535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 245529cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto mps = usb_endpoint_maxp(desc); 24565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* note, we handle this here instead of s3c_hsotg_set_ep_maxpacket */ 24585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 245994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 24605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctrl = readl(hsotg->regs + epctrl_reg); 24615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x from 0x%08x\n", 24635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, epctrl, epctrl_reg); 24645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 246522258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 24665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 246747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl &= ~(DXEPCTL_EPTYPE_MASK | DXEPCTL_MPS_MASK); 246847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_MPS(mps); 24695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24708b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24718b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * mark the endpoint as active, otherwise the core may ignore 24728b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transactions entirely for this endpoint 24738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 247447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_USBACTEP; 24755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24768b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set the NAK status on the endpoint, otherwise we might try and 24785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * do something with data that we've yet got a request to process 24795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * since the RXFIFO will take data for an endpoint even if the 24805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * size register hasn't been set. 24815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 24825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 248347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SNAK; 24845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* update the endpoint state */ 2486e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga s3c_hsotg_set_ep_maxpacket(hsotg, hs_ep->index, mps); 24875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* default, set to non-periodic */ 24891479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->isochronous = 0; 24905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->periodic = 0; 2491a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga hs_ep->halted = 0; 24921479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->interval = desc->bInterval; 24935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24944fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->interval > 1 && hs_ep->mc > 1) 24954fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_err(hsotg->dev, "MC > 1 when interval is not 1\n"); 24964fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 24975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { 24985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_ISOC: 249947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_ISO; 250047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SETEVENFR; 25011479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->isochronous = 1; 25021479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (dir_in) 25031479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->periodic = 1; 25041479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga break; 25055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_BULK: 250747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_BULK; 25085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 25095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_INT: 25115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) { 25128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 25138b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Allocate our TxFNum by simply using the index 25145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the endpoint for the moment. We could do 25155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * something better if the host indicates how 25168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * many FIFOs we are expecting to use. 25178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 25185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->periodic = 1; 252047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_TXFNUM(index); 25215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 252347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_INTERRUPT; 25245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 25255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_CONTROL: 252747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_CONTROL; 25285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 25295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25318b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 25328b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if the hardware has dedicated fifos, we must give each IN EP 253310aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks * a unique tx-fifo even if it is non-periodic. 253410aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks */ 253510aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (dir_in && hsotg->dedicated_fifos) 253647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_TXFNUM(index); 253710aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 25385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* for non control endpoints, set PID to D0 */ 25395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index) 254047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SETD0PID; 25415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: write DxEPCTL=0x%08x\n", 25435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, epctrl); 25445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctrl, hsotg->regs + epctrl_reg); 25465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x\n", 25475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg)); 25485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* enable the endpoint interrupt */ 25505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1); 25515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 255222258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 255319c190f9e0fe926db28122a804111a7538dc3498Julia Lawall return ret; 25545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 25555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 25578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_disable - disable given endpoint 25588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to disable. 25598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 25605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_disable(struct usb_ep *ep) 25615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 25625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 25635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 25645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in = hs_ep->dir_in; 25655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 25665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 25675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 25685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 25695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "%s(ep %p)\n", __func__, ep); 25715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep == &hsotg->eps[0].ep) { 25735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: called for ep0\n", __func__); 25745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 25755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 257794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 25785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25795ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 25805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* terminate all requests with shutdown */ 25815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, false); 25825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl = readl(hsotg->regs + epctrl_reg); 258547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl &= ~DXEPCTL_EPENA; 258647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl &= ~DXEPCTL_USBACTEP; 258747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SNAK; 25885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); 25905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ctrl, hsotg->regs + epctrl_reg); 25915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* disable endpoint interrupts */ 25935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0); 25945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 259522258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 25965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 25975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 25985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 26005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on_list - check request is on the given endpoint 26015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint to check. 26025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @test: The request to test if it is on the endpoint. 26038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic bool on_list(struct s3c_hsotg_ep *ep, struct s3c_hsotg_req *test) 26055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req, *treq; 26075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry_safe(req, treq, &ep->queue, queue) { 26095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req == test) 26105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return true; 26115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 26125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return false; 26145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 26155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 26178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_dequeue - dequeue given endpoint 26188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to dequeue. 26198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @req: The request to be removed from a queue. 26208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) 26225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 26245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 26255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 26265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 26275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hs->dev, "ep_dequeue(%p,%p)\n", ep, req); 26295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 263022258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hs->lock, flags); 26315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!on_list(hs_ep, hs_req)) { 263322258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 26345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 26355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 26365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_request(hs, hs_ep, hs_req, -ECONNRESET); 263822258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 26395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 26415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 26425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26438b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 26448b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_sethalt - set halt on a given endpoint 26458b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to set halt. 26468b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @value: Set or unset the halt. 26478b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value) 26495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 26515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 26525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 26535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epreg; 26545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctl; 26559c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov u32 xfertype; 26565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value); 26585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2659c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (index == 0) { 2660c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (value) 2661c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_stall_ep0(hs); 2662c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga else 2663c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_warn(hs->dev, 2664c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga "%s: can't clear halt on ep0\n", __func__); 2665c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga return 0; 2666c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga } 2667c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 26685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* write both IN and OUT control registers */ 26695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 267094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epreg = DIEPCTL(index); 26715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctl = readl(hs->regs + epreg); 26725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26739c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (value) { 267447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_STALL + DXEPCTL_SNAK; 267547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (epctl & DXEPCTL_EPENA) 267647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_EPDIS; 26779c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } else { 267847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl &= ~DXEPCTL_STALL; 267947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype = epctl & DXEPCTL_EPTYPE_MASK; 268047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (xfertype == DXEPCTL_EPTYPE_BULK || 268147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype == DXEPCTL_EPTYPE_INTERRUPT) 268247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_SETD0PID; 26839c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 26845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctl, hs->regs + epreg); 26865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 268794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epreg = DOEPCTL(index); 26885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctl = readl(hs->regs + epreg); 26895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (value) 269147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_STALL; 26929c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov else { 269347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl &= ~DXEPCTL_STALL; 269447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype = epctl & DXEPCTL_EPTYPE_MASK; 269547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (xfertype == DXEPCTL_EPTYPE_BULK || 269647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype == DXEPCTL_EPTYPE_INTERRUPT) 269747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_SETD0PID; 26989c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 26995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctl, hs->regs + epreg); 27015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2702a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga hs_ep->halted = value; 2703a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga 27045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 27055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 27065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27075ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski/** 27085ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * s3c_hsotg_ep_sethalt_lock - set halt on a given endpoint with lock held 27095ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * @ep: The endpoint to set halt. 27105ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * @value: Set or unset the halt. 27115ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski */ 27125ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewskistatic int s3c_hsotg_ep_sethalt_lock(struct usb_ep *ep, int value) 27135ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski{ 27145ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg_ep *hs_ep = our_ep(ep); 27155ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg *hs = hs_ep->parent; 27165ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski unsigned long flags = 0; 27175ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski int ret = 0; 27185ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 27195ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hs->lock, flags); 27205ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski ret = s3c_hsotg_ep_sethalt(ep, value); 27215ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 27225ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 27235ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski return ret; 27245ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski} 27255ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 27265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct usb_ep_ops s3c_hsotg_ep_ops = { 27275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .enable = s3c_hsotg_ep_enable, 27285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .disable = s3c_hsotg_ep_disable, 27295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .alloc_request = s3c_hsotg_ep_alloc_request, 27305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .free_request = s3c_hsotg_ep_free_request, 27315ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski .queue = s3c_hsotg_ep_queue_lock, 27325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .dequeue = s3c_hsotg_ep_dequeue, 27335ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski .set_halt = s3c_hsotg_ep_sethalt_lock, 273425985edcedea6396277003854657b5f3cb31a628Lucas De Marchi /* note, don't believe we have any call for the fifo routines */ 27355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 27365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 27384118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * s3c_hsotg_phy_enable - enable platform phy dev 27398b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 27404118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * 27414118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * A wrapper for platform code responsible for controlling 27424118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * low-level USB code 27434118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski */ 27444118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewskistatic void s3c_hsotg_phy_enable(struct s3c_hsotg *hsotg) 27454118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski{ 27464118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski struct platform_device *pdev = to_platform_device(hsotg->dev); 27474118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 27484118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski dev_dbg(hsotg->dev, "pdev 0x%p\n", pdev); 2749b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri 275074084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) { 275174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_init(hsotg->phy); 275274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_power_on(hsotg->phy); 275374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else if (hsotg->uphy) 275474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter usb_phy_init(hsotg->uphy); 2755b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri else if (hsotg->plat->phy_init) 27564118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski hsotg->plat->phy_init(pdev, hsotg->plat->phy_type); 27574118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski} 27584118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 27594118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski/** 27604118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * s3c_hsotg_phy_disable - disable platform phy dev 27618b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 27624118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * 27634118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * A wrapper for platform code responsible for controlling 27644118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * low-level USB code 27654118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski */ 27664118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewskistatic void s3c_hsotg_phy_disable(struct s3c_hsotg *hsotg) 27674118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski{ 27684118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski struct platform_device *pdev = to_platform_device(hsotg->dev); 27694118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 277074084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) { 277174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_power_off(hsotg->phy); 277274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_exit(hsotg->phy); 277374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else if (hsotg->uphy) 277474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter usb_phy_shutdown(hsotg->uphy); 2775b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri else if (hsotg->plat->phy_exit) 27764118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type); 27774118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski} 27784118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 27798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 27808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_init - initalize the usb core 27818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 27828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2783b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewskistatic void s3c_hsotg_init(struct s3c_hsotg *hsotg) 2784b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski{ 2785b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* unmask subset of endpoint interrupts */ 2786b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 278747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | 278847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK, 278947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DIEPMSK); 2790b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 279147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DOEPMSK_SETUPMSK | DOEPMSK_AHBERRMSK | 279247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_EPDISBLDMSK | DOEPMSK_XFERCOMPLMSK, 279347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DOEPMSK); 2794b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 279594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0, hsotg->regs + DAINTMSK); 2796b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2797b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* Be in disconnected state until gadget is registered */ 279847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2799b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2800b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (0) { 2801b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* post global nak until we're ready */ 280247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_SGNPINNAK | DCTL_SGOUTNAK, 280394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DCTL); 2804b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 2805b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2806b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* setup fifos */ 2807b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2808b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_dbg(hsotg->dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", 280994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GRXFSIZ), 281094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GNPTXFSIZ)); 2811b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2812b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski s3c_hsotg_init_fifo(hsotg); 2813b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2814b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* set the PLL on, remove the HNP/SRP and set the PHY */ 281547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GUSBCFG_PHYIF16 | GUSBCFG_TOUTCAL(7) | (0x5 << 10), 281694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GUSBCFG); 2817b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 281847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(using_dma(hsotg) ? GAHBCFG_DMA_EN : 0x0, 281994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GAHBCFG); 2820b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski} 2821b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 28228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 28238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_udc_start - prepare the udc for work 28248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 28258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @driver: The usb gadget driver 28268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 28278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Perform initialization to prepare udc device and driver 28288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * to work. 28298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2830f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewskistatic int s3c_hsotg_udc_start(struct usb_gadget *gadget, 2831f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski struct usb_gadget_driver *driver) 28325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2833f99b2bfebe8984db2b6e4c07e2bedc91977d27d8Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 28345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 28355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hsotg) { 2837a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek pr_err("%s: called with no device\n", __func__); 28385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENODEV; 28395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!driver) { 28425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: no driver\n", __func__); 28435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 28445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28467177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (driver->max_speed < USB_SPEED_FULL) 28475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: bad speed\n", __func__); 28485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2849f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (!driver->setup) { 28505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: missing entry points\n", __func__); 28515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 28525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(hsotg->driver); 28555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks driver->driver.bus = NULL; 28575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->driver = driver; 28587d7b22928b900bcb0f8885a95846e5125a757e76Alexandre Pereira da Silva hsotg->gadget.dev.of_node = hsotg->dev->of_node; 28595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_UNKNOWN; 28605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2861f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 2862f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski hsotg->supplies); 28635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 2864f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski dev_err(hsotg->dev, "failed to enable supplies: %d\n", ret); 28655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto err; 28665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 286812a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski hsotg->last_rst = jiffies; 28695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); 28705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 28715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dookserr: 28735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->driver = NULL; 28745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 28755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 28765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 28788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_udc_stop - stop the udc 28798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 28808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @driver: The usb gadget driver 28818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 28828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Stop udc hw block and stay tunned for future transmissions 28838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2884f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewskistatic int s3c_hsotg_udc_stop(struct usb_gadget *gadget, 2885f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski struct usb_gadget_driver *driver) 28865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2887f99b2bfebe8984db2b6e4c07e2bedc91977d27d8Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 28882b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski unsigned long flags = 0; 28895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep; 28905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hsotg) 28925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENODEV; 28935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* all endpoints should be shutdown */ 2895b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (ep = 0; ep < hsotg->num_of_eps; ep++) 28965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); 28975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28982b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 28992b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski 2900f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 29015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2902c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski if (!driver) 2903c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski hsotg->driver = NULL; 2904c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski 29055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_UNKNOWN; 29065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29072b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 29082b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski 2909c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); 29105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 29125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 29135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 29158b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_gadget_getframe - read the frame number 29168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 29178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 29188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Read the {micro} frame number 29198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 29205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget) 29215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 29225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return s3c_hsotg_read_frameno(to_hsotg(gadget)); 29235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 29245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2925a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski/** 2926a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * s3c_hsotg_pullup - connect/disconnect the USB PHY 2927a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * @gadget: The usb gadget state 2928a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * @is_on: Current state of the USB PHY 2929a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * 2930a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * Connect/Disconnect the USB PHY pullup 2931a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski */ 2932a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewskistatic int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) 2933a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski{ 2934a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 2935a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski unsigned long flags = 0; 2936a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2937a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski dev_dbg(hsotg->dev, "%s: is_in: %d\n", __func__, is_on); 2938a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2939a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 2940a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski if (is_on) { 2941a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_phy_enable(hsotg); 2942a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_core_init(hsotg); 2943a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski } else { 2944a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_disconnect(hsotg); 2945a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 2946a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski } 2947a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2948a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski hsotg->gadget.speed = USB_SPEED_UNKNOWN; 2949a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 2950a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2951a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski return 0; 2952a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski} 2953a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2954eeef45876631a446eaedce16675f4ff344e16cf0Felipe Balbistatic const struct usb_gadget_ops s3c_hsotg_gadget_ops = { 29555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .get_frame = s3c_hsotg_gadget_getframe, 2956f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski .udc_start = s3c_hsotg_udc_start, 2957f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski .udc_stop = s3c_hsotg_udc_stop, 2958a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski .pullup = s3c_hsotg_pullup, 29595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 29605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 29625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_initep - initialise a single endpoint 29635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 29645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to be initialised. 29655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @epnum: The endpoint number 29665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 29675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Initialise the given endpoint (as part of the probe and device state 29685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * creation) to give to the gadget driver. Setup the endpoint name, any 29695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * direction information and other state that may be required. 29705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 297141ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic void s3c_hsotg_initep(struct s3c_hsotg *hsotg, 29725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 29735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum) 29745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 29755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ptxfifo; 29765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks char *dir; 29775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum == 0) 29795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = ""; 29805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else if ((epnum % 2) == 0) { 29815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = "out"; 29825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 29835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = "in"; 29845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->dir_in = 1; 29855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 29865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->index = epnum; 29885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks snprintf(hs_ep->name, sizeof(hs_ep->name), "ep%d%s", epnum, dir); 29905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_ep->queue); 29925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_ep->ep.ep_list); 29935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* add to the list of endpoints known by the gadget driver */ 29955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum) 29965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_add_tail(&hs_ep->ep.ep_list, &hsotg->gadget.ep_list); 29975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->parent = hsotg; 29995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->ep.name = hs_ep->name; 3000e117e742d310683b410951faeab4b13b6c3c609fRobert Baldyga usb_ep_set_maxpacket_limit(&hs_ep->ep, epnum ? 1024 : EP0_MPS_LIMIT); 30015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->ep.ops = &s3c_hsotg_ep_ops; 30025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 30048b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Read the FIFO size for the Periodic TX FIFO, even if we're 30055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * an OUT endpoint, we may as well do this if in future the 30065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * code is changed to make each endpoint's direction changeable. 30075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 30085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 300947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ptxfifo = readl(hsotg->regs + DPTXFSIZN(epnum)); 301047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hs_ep->fifo_size = FIFOSIZE_DEPTH_GET(ptxfifo) * 4; 30115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 30138b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we're using dma, we need to set the next-endpoint pointer 30145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to be something valid. 30155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 30165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) { 301847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen u32 next = DXEPCTL_NEXTEP((epnum + 1) % 15); 301994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(next, hsotg->regs + DIEPCTL(epnum)); 302094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(next, hsotg->regs + DOEPCTL(epnum)); 30215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 30235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3024b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski/** 3025b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * s3c_hsotg_hw_cfg - read HW configuration registers 3026b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * @param: The device state 3027b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * 3028b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * Read the USB core HW configuration registers 3029b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski */ 3030b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewskistatic void s3c_hsotg_hw_cfg(struct s3c_hsotg *hsotg) 30315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3032b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski u32 cfg2, cfg4; 3033b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* check hardware configuration */ 30345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3035b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski cfg2 = readl(hsotg->regs + 0x48); 3036b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->num_of_eps = (cfg2 >> 10) & 0xF; 303710aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 3038b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_info(hsotg->dev, "EPs:%d\n", hsotg->num_of_eps); 303910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 304010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks cfg4 = readl(hsotg->regs + 0x50); 304110aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks hsotg->dedicated_fifos = (cfg4 >> 25) & 1; 304210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 304310aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks dev_info(hsotg->dev, "%s fifos\n", 304410aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks hsotg->dedicated_fifos ? "dedicated" : "shared"); 30455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 30465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30478b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 30488b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_dump - dump state of the udc 30498b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @param: The device state 30508b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 30515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_dump(struct s3c_hsotg *hsotg) 30525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 305383a018045659ee2cc9b1390ddb8b2a247d269bc4Mark Brown#ifdef DEBUG 30545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct device *dev = hsotg->dev; 30555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 30565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 val; 30575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 30585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DCFG=0x%08x, DCTL=0x%08x, DIEPMSK=%08x\n", 306094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCFG), readl(regs + DCTL), 306194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPMSK)); 30625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "GAHBCFG=0x%08x, 0x44=0x%08x\n", 306494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GAHBCFG), readl(regs + 0x44)); 30655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", 306794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GRXFSIZ), readl(regs + GNPTXFSIZ)); 30685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* show periodic fifo settings */ 30705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 1; idx <= 15; idx++) { 307247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val = readl(regs + DPTXFSIZN(idx)); 30735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DPTx[%d] FSize=%d, StAddr=0x%08x\n", idx, 307447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 307547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_STARTADDR_MASK); 30765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 0; idx < 15; idx++) { 30795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, 30805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "ep%d-in: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", idx, 308194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPCTL(idx)), 308294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPTSIZ(idx)), 308394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPDMA(idx))); 30845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 308594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(regs + DOEPCTL(idx)); 30865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, 30875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "ep%d-out: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", 308894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski idx, readl(regs + DOEPCTL(idx)), 308994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPTSIZ(idx)), 309094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPDMA(idx))); 30915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DVBUSDIS=0x%08x, DVBUSPULSE=%08x\n", 309594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DVBUSDIS), readl(regs + DVBUSPULSE)); 309683a018045659ee2cc9b1390ddb8b2a247d269bc4Mark Brown#endif 30975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 30985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 31005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * state_show - debugfs: show overall driver and device state. 31015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq file to write to. 31025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 31035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 31045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This debugfs entry shows the overall state of the hardware and 31055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * some general information about each of the endpoints available 31065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to the system. 31075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 31085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int state_show(struct seq_file *seq, void *v) 31095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = seq->private; 31115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 31125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 31135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n", 311594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCFG), 311694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCTL), 311794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DSTS)); 31185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n", 312094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPMSK), readl(regs + DOEPMSK)); 31215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n", 312394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GINTMSK), 312494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GINTSTS)); 31255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n", 312794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DAINTMSK), 312894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DAINT)); 31295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n", 313194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GNPTXSTS), 313294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GRXSTSR)); 31335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3134a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\nEndpoint status:\n"); 31355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 0; idx < 15; idx++) { 31375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 in, out; 31385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 313994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski in = readl(regs + DIEPCTL(idx)); 314094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski out = readl(regs + DOEPCTL(idx)); 31415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x", 31435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks idx, in, out); 31445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 314594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski in = readl(regs + DIEPTSIZ(idx)); 314694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski out = readl(regs + DOEPTSIZ(idx)); 31475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x", 31495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks in, out); 31505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3151a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\n"); 31525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 31535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 31555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 31565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int state_open(struct inode *inode, struct file *file) 31585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, state_show, inode->i_private); 31605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 31615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations state_fops = { 31635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 31645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = state_open, 31655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 31665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 31675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 31685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 31695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 31715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * fifo_show - debugfs: show the fifo information 31725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq_file to write data to. 31735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 31745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 31755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Show the FIFO information for the overall fifo and all the 31765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * periodic transmission FIFOs. 31778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 31785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int fifo_show(struct seq_file *seq, void *v) 31795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = seq->private; 31815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 31825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 val; 31835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 31845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3185a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "Non-periodic FIFOs:\n"); 318694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski seq_printf(seq, "RXFIFO: Size %d\n", readl(regs + GRXFSIZ)); 31875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 318894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(regs + GNPTXFSIZ); 31895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n", 319047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 319147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_DEPTH_MASK); 31925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3193a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\nPeriodic TXFIFOs:\n"); 31945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 1; idx <= 15; idx++) { 319647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val = readl(regs + DPTXFSIZN(idx)); 31975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, 319947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 320047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_STARTADDR_MASK); 32015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 32045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int fifo_open(struct inode *inode, struct file *file) 32075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, fifo_show, inode->i_private); 32095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations fifo_fops = { 32125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 32135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = fifo_open, 32145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 32155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 32165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 32175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 32185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const char *decode_direction(int is_in) 32215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return is_in ? "in" : "out"; 32235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 32265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * ep_show - debugfs: show the state of an endpoint. 32275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq_file to write data to. 32285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 32295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 32305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This debugfs entry shows the state of the given endpoint (one is 32315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * registered for each available). 32328b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 32335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int ep_show(struct seq_file *seq, void *v) 32345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = seq->private; 32365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = ep->parent; 32375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req; 32385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 32395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = ep->index; 32405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int show_limit = 15; 32415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 32425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n", 32445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->index, ep->ep.name, decode_direction(ep->dir_in)); 32455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* first show the register state */ 32475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n", 324994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPCTL(index)), 325094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPCTL(index))); 32515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n", 325394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPDMA(index)), 325494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPDMA(index))); 32555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n", 325794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPINT(index)), 325894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPINT(index))); 32595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n", 326194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPTSIZ(index)), 326294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPTSIZ(index))); 32635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3264a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\n"); 32655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "mps %d\n", ep->ep.maxpacket); 32665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "total_data=%ld\n", ep->total_data); 32675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "request list (%p,%p):\n", 32695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->queue.next, ep->queue.prev); 32705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 327122258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 32725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry(req, &ep->queue, queue) { 32745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (--show_limit < 0) { 3275a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "not showing more requests...\n"); 32765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 32775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "%c req %p: %d bytes @%p, ", 32805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req == ep->req ? '*' : ' ', 32815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req, req->req.length, req->req.buf); 32825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "%d done, res %d\n", 32835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->req.actual, req->req.status); 32845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 328622258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 32875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 32895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int ep_open(struct inode *inode, struct file *file) 32925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, ep_show, inode->i_private); 32945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations ep_fops = { 32975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 32985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = ep_open, 32995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 33005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 33015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 33025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 33035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 33055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_create_debug - create debugfs directory and files 33065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 33075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 33085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Create the debugfs files to allow the user to get information 33095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * about the state of the system. The directory name is created 33105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * with the same name as the device itself, in case we end up 33115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * with multiple blocks in future systems. 33128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 331341ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic void s3c_hsotg_create_debug(struct s3c_hsotg *hsotg) 33145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct dentry *root; 33165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned epidx; 33175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks root = debugfs_create_dir(dev_name(hsotg->dev), NULL); 33195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_root = root; 33205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(root)) { 33215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "cannot create debug root\n"); 33225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 33235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* create general state file */ 33265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_file = debugfs_create_file("state", 0444, root, 33285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg, &state_fops); 33295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(hsotg->debug_file)) 33315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to create state\n", __func__); 33325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_fifo = debugfs_create_file("fifo", 0444, root, 33345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg, &fifo_fops); 33355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(hsotg->debug_fifo)) 33375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__); 33385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* create one file for each endpoint */ 33405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3341b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 33425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; 33435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->debugfs = debugfs_create_file(ep->name, 0444, 33455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks root, ep, &ep_fops); 33465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(ep->debugfs)) 33485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "failed to create %s debug file\n", 33495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->name); 33505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 33545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_delete_debug - cleanup debugfs entries 33555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 33565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 33575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Cleanup (remove) the debugfs files for use on module exit. 33588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3359fb4e98ab63433c4d3a1588ea91c73f1cd7ebaa00Bill Pembertonstatic void s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg) 33605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned epidx; 33625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3363b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 33645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; 33655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(ep->debugfs); 33665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_file); 33695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_fifo); 33705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_root); 33715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 33748b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_probe - probe function for hsotg driver 33758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @pdev: The platform information for the driver 33768b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3377f026a52d4309e1e08752a8bd41ac74aeea815686Lukasz Majewski 337841ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic int s3c_hsotg_probe(struct platform_device *pdev) 33795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3380e01ee9f509a927158f670408b41127d4166db1c7Jingoo Han struct s3c_hsotg_plat *plat = dev_get_platdata(&pdev->dev); 338174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct phy *phy; 338274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct usb_phy *uphy; 33835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct device *dev = &pdev->dev; 3384b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski struct s3c_hsotg_ep *eps; 33855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg; 33865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct resource *res; 33875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum; 33885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 3389fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski int i; 33905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3391338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat hsotg = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsotg), GFP_KERNEL); 3392d04477d84be0bcac96452bdb824ff6eec4b49c96Jingoo Han if (!hsotg) 33935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOMEM; 33945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 339574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter /* 339674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter * Attempt to find a generic PHY, then look for an old style 339774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter * USB PHY, finally fall back to pdata 339874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter */ 339974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy = devm_phy_get(&pdev->dev, "usb2-phy"); 3400f4f5ba5e7d9e087f044fe87f5a5421761274aa48Felipe Balbi if (IS_ERR(phy)) { 340174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter uphy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); 340274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (IS_ERR(uphy)) { 340374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter /* Fallback for pdata */ 340474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter plat = dev_get_platdata(&pdev->dev); 340574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (!plat) { 340674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter dev_err(&pdev->dev, 340774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter "no platform data or transceiver defined\n"); 340874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter return -EPROBE_DEFER; 340974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } 3410b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri hsotg->plat = plat; 341174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else 341274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter hsotg->uphy = uphy; 341374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else 3414b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri hsotg->phy = phy; 3415b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri 34165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->dev = dev; 34175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 341884749c6dcb694a7aa793221ea8cc3d70bd46d466Sachin Kamat hsotg->clk = devm_clk_get(&pdev->dev, "otg"); 341931ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski if (IS_ERR(hsotg->clk)) { 342031ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski dev_err(dev, "cannot get otg clock\n"); 3421338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat return PTR_ERR(hsotg->clk); 342231ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski } 342331ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 34245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks platform_set_drvdata(pdev, hsotg); 34255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 34275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3428148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding hsotg->regs = devm_ioremap_resource(&pdev->dev, res); 3429148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding if (IS_ERR(hsotg->regs)) { 3430148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding ret = PTR_ERR(hsotg->regs); 3431338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 34325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = platform_get_irq(pdev, 0); 34355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 34365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(dev, "cannot find IRQ\n"); 3437338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 34385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 344022258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_init(&hsotg->lock); 344122258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski 34425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->irq = ret; 34435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3444338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat ret = devm_request_irq(&pdev->dev, hsotg->irq, s3c_hsotg_irq, 0, 3445338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat dev_name(dev), hsotg); 34465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 34475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(dev, "cannot claim IRQ\n"); 3448338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 34495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "regs %p, irq %d\n", hsotg->regs, hsotg->irq); 34525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3453d327ab5b6d660d6fe22b073b743fde1668e593bbMichal Nazarewicz hsotg->gadget.max_speed = USB_SPEED_HIGH; 34545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.ops = &s3c_hsotg_gadget_ops; 34555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.name = dev_name(dev); 34565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* reset the system */ 34585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 345904b4a0fce530eab728e27e24b5a8d6192c6f70d9Lukasz Majewski clk_prepare_enable(hsotg->clk); 346031ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 3461fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski /* regulators */ 3462fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3463fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski for (i = 0; i < ARRAY_SIZE(hsotg->supplies); i++) 3464fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies[i].supply = s3c_hsotg_supply_names[i]; 3465fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3466cd76213eb57c505d3df6fa3134a6b3bb5394a90cSachin Kamat ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(hsotg->supplies), 3467fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies); 3468fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski if (ret) { 3469fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski dev_err(dev, "failed to request supplies: %d\n", ret); 3470338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 3471fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski } 3472fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3473fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 3474fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies); 3475fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3476fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski if (ret) { 3477fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski dev_err(hsotg->dev, "failed to enable supplies: %d\n", ret); 3478fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski goto err_supplies; 3479fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski } 3480fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3481f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter /* Set default UTMI width */ 348247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->phyif = GUSBCFG_PHYIF16; 3483f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter 3484f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter /* 3485f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter * If using the generic PHY framework, check if the PHY bus 3486f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter * width is 8-bit and set the phyif appropriately. 3487f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter */ 3488f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter if (hsotg->phy && (phy_get_bus_width(phy) == 8)) 348947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->phyif = GUSBCFG_PHYIF8; 3490f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter 349174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) 349274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_init(hsotg->phy); 349374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter 34944118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski /* usb phy enable */ 34954118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_enable(hsotg); 34965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_corereset(hsotg); 34985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_init(hsotg); 3499b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski s3c_hsotg_hw_cfg(hsotg); 3500b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3501b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* hsotg->num_of_eps holds number of EPs other than ep0 */ 3502b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3503b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (hsotg->num_of_eps == 0) { 3504b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_err(dev, "wrong number of EPs (zero)\n"); 3505dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -EINVAL; 3506b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_supplies; 3507b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 3508b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3509b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski eps = kcalloc(hsotg->num_of_eps + 1, sizeof(struct s3c_hsotg_ep), 3510b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski GFP_KERNEL); 3511b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (!eps) { 3512dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -ENOMEM; 3513b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_supplies; 3514b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 3515b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3516b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->eps = eps; 3517b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3518b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* setup endpoint information */ 3519b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3520b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski INIT_LIST_HEAD(&hsotg->gadget.ep_list); 3521b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->gadget.ep0 = &hsotg->eps[0].ep; 3522b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3523b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* allocate EP0 request */ 3524b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3525b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps[0].ep, 3526b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski GFP_KERNEL); 3527b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (!hsotg->ctrl_req) { 3528b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_err(dev, "failed to allocate ctrl req\n"); 3529dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -ENOMEM; 3530b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_ep_mem; 3531b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 35325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* initialise the endpoints now the core has been initialised */ 3534b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epnum = 0; epnum < hsotg->num_of_eps; epnum++) 35355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_initep(hsotg, &hsotg->eps[epnum], epnum); 35365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3537f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski /* disable power and clock */ 3538f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 3539f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), 3540f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski hsotg->supplies); 3541f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (ret) { 3542f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski dev_err(hsotg->dev, "failed to disable supplies: %d\n", ret); 3543f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski goto err_ep_mem; 3544f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski } 3545f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 3546f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 3547f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 35480f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior ret = usb_add_gadget_udc(&pdev->dev, &hsotg->gadget); 35490f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior if (ret) 3550b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_ep_mem; 35510f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 35525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_create_debug(hsotg); 35535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_dump(hsotg); 35555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 35575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35581d144c6732f6badd4be7a1383a4ae2adcc3f9386Lukasz Majewskierr_ep_mem: 3559b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski kfree(eps); 3560fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewskierr_supplies: 35614118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 356231ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowskierr_clk: 35631d144c6732f6badd4be7a1383a4ae2adcc3f9386Lukasz Majewski clk_disable_unprepare(hsotg->clk); 3564338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat 35655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 35665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 35675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35688b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 35698b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_remove - remove function for hsotg driver 35708b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @pdev: The platform information for the driver 35718b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3572fb4e98ab63433c4d3a1588ea91c73f1cd7ebaa00Bill Pembertonstatic int s3c_hsotg_remove(struct platform_device *pdev) 35735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 35745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 35755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35760f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&hsotg->gadget); 35770f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 35785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_delete_debug(hsotg); 35795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3580f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (hsotg->driver) { 3581f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski /* should have been done already by driver model core */ 3582f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski usb_gadget_unregister_driver(hsotg->driver); 3583f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski } 35845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35854118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 358674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) 358774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_exit(hsotg->phy); 358804b4a0fce530eab728e27e24b5a8d6192c6f70d9Lukasz Majewski clk_disable_unprepare(hsotg->clk); 358931ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 35905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 35915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 35925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3593b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowskistatic int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state) 3594b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski{ 3595b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 3596b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski unsigned long flags; 3597b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ret = 0; 3598b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3599b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) 3600b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski dev_info(hsotg->dev, "suspending usb gadget %s\n", 3601b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->driver->driver.name); 3602b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3603b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_lock_irqsave(&hsotg->lock, flags); 3604b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_disconnect(hsotg); 3605b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_phy_disable(hsotg); 3606b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->gadget.speed = USB_SPEED_UNKNOWN; 3607b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_unlock_irqrestore(&hsotg->lock, flags); 3608b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3609b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) { 3610b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ep; 3611b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski for (ep = 0; ep < hsotg->num_of_eps; ep++) 3612b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); 3613b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3614b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), 3615b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->supplies); 3616b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski } 3617b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3618b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski return ret; 3619b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski} 3620b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3621b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowskistatic int s3c_hsotg_resume(struct platform_device *pdev) 3622b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski{ 3623b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 3624b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski unsigned long flags; 3625b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ret = 0; 3626b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3627b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) { 3628b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski dev_info(hsotg->dev, "resuming usb gadget %s\n", 3629b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->driver->driver.name); 3630b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 3631b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->supplies); 3632b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski } 3633b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3634b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_lock_irqsave(&hsotg->lock, flags); 3635b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->last_rst = jiffies; 3636b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_phy_enable(hsotg); 3637b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_core_init(hsotg); 3638b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_unlock_irqrestore(&hsotg->lock, flags); 3639b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3640b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski return ret; 3641b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski} 36425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3643c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#ifdef CONFIG_OF 3644c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figastatic const struct of_device_id s3c_hsotg_of_ids[] = { 3645c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa { .compatible = "samsung,s3c6400-hsotg", }, 36460d33d825632737c8d3353c80c8701252682bcb03Matt Porter { .compatible = "snps,dwc2", }, 3647c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa { /* sentinel */ } 3648c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa}; 3649c50f056c360673ef196b49bfa161d841f0fbe92eTomasz FigaMODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids); 3650c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#endif 3651c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa 36525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct platform_driver s3c_hsotg_driver = { 36535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .driver = { 36545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .name = "s3c-hsotg", 36555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 3656c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa .of_match_table = of_match_ptr(s3c_hsotg_of_ids), 36575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks }, 36585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .probe = s3c_hsotg_probe, 36597690417db5085f0de03aa70b8ca01b0118e8a1b4Bill Pemberton .remove = s3c_hsotg_remove, 36605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .suspend = s3c_hsotg_suspend, 36615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .resume = s3c_hsotg_resume, 36625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 36635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3664cc27c96c2bee93068bfc60ea6b09611d88cef429Axel Linmodule_platform_driver(s3c_hsotg_driver); 36655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_DESCRIPTION("Samsung S3C USB High-speed/OtG device"); 36675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); 36685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_LICENSE("GPL"); 36695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_ALIAS("platform:s3c-hsotg"); 3670