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 1868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 187b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga * Because we have not enough memory to have each TX FIFO of size at 188b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga * least 3072 bytes (the maximum single packet size), we create four 189b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga * FIFOs of lenght 1024, and four of length 3072 bytes, and assing 190b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga * them to endpoints dynamically according to maxpacket size value of 191b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga * given endpoint. 1928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 1930f002d200598918f5058dfcfda3da46f29019765Ben Dooks 194b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga /* 256*4=1024 bytes FIFO length */ 195b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga size = 256; 196b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga for (ep = 1; ep <= 4; ep++) { 197b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga val = addr; 198b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga val |= size << FIFOSIZE_DEPTH_SHIFT; 199b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga WARN_ONCE(addr + size > hsotg->fifo_mem, 200b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga "insufficient fifo memory"); 201b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga addr += size; 202b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga 203b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga writel(val, hsotg->regs + DPTXFSIZN(ep)); 204b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga } 205b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga /* 768*4=3072 bytes FIFO length */ 206b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga size = 768; 207b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga for (ep = 5; ep <= 8; ep++) { 2080f002d200598918f5058dfcfda3da46f29019765Ben Dooks val = addr; 20947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val |= size << FIFOSIZE_DEPTH_SHIFT; 210cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski WARN_ONCE(addr + size > hsotg->fifo_mem, 211cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski "insufficient fifo memory"); 2120f002d200598918f5058dfcfda3da46f29019765Ben Dooks addr += size; 2130f002d200598918f5058dfcfda3da46f29019765Ben Dooks 21447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(val, hsotg->regs + DPTXFSIZN(ep)); 2150f002d200598918f5058dfcfda3da46f29019765Ben Dooks } 2161703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 2188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * according to p428 of the design guide, we need to ensure that 2198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * all fifos are flushed before continuing 2208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2211703a6d3c38944731ba23594843a704d828266f3Ben Dooks 22247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_TXFNUM(0x10) | GRSTCTL_TXFFLSH | 22347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GRSTCTL_RXFFLSH, hsotg->regs + GRSTCTL); 2241703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2251703a6d3c38944731ba23594843a704d828266f3Ben Dooks /* wait until the fifos are both flushed */ 2261703a6d3c38944731ba23594843a704d828266f3Ben Dooks timeout = 100; 2271703a6d3c38944731ba23594843a704d828266f3Ben Dooks while (1) { 22894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(hsotg->regs + GRSTCTL); 2291703a6d3c38944731ba23594843a704d828266f3Ben Dooks 23047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((val & (GRSTCTL_TXFFLSH | GRSTCTL_RXFFLSH)) == 0) 2311703a6d3c38944731ba23594843a704d828266f3Ben Dooks break; 2321703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2331703a6d3c38944731ba23594843a704d828266f3Ben Dooks if (--timeout == 0) { 2341703a6d3c38944731ba23594843a704d828266f3Ben Dooks dev_err(hsotg->dev, 2351703a6d3c38944731ba23594843a704d828266f3Ben Dooks "%s: timeout flushing fifos (GRSTCTL=%08x)\n", 2361703a6d3c38944731ba23594843a704d828266f3Ben Dooks __func__, val); 2371703a6d3c38944731ba23594843a704d828266f3Ben Dooks } 2381703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2391703a6d3c38944731ba23594843a704d828266f3Ben Dooks udelay(1); 2401703a6d3c38944731ba23594843a704d828266f3Ben Dooks } 2411703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2421703a6d3c38944731ba23594843a704d828266f3Ben Dooks dev_dbg(hsotg->dev, "FIFOs reset, timeout at %d\n", timeout); 2435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: USB endpoint to allocate request for. 2475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @flags: Allocation flags 2485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Allocate a new USB request structure appropriate for the specified endpoint 2505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2510978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brownstatic struct usb_request *s3c_hsotg_ep_alloc_request(struct usb_ep *ep, 2520978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brown gfp_t flags) 2535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req; 2555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req = kzalloc(sizeof(struct s3c_hsotg_req), flags); 2575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) 2585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 2595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&req->queue); 2615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return &req->req; 2635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is_ep_periodic - return true if the endpoint is in periodic mode. 2675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to query. 2685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Returns true if the endpoint is in periodic mode, meaning it is being 2705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * used for an Interrupt or ISO transfer. 2715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline int is_ep_periodic(struct s3c_hsotg_ep *hs_ep) 2735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return hs_ep->periodic; 2755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_unmap_dma - unmap the DMA memory being used for the request 2795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 2805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint for the request 2815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request being processed. 2825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is the reverse of s3c_hsotg_map_dma(), called for the completion 2845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of a request to ensure the buffer is ready for access by the caller. 2858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_unmap_dma(struct s3c_hsotg *hsotg, 2875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 2885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req) 2895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = &hs_req->req; 2915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* ignore this if we're not moving any data */ 2935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.length == 0) 2945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 2955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29617d966a325a7ccfb5970839fb5b2ebb9e3909a6fJingoo Han usb_gadget_unmap_request(&hsotg->gadget, req, hs_ep->dir_in); 2975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 3005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_write_fifo - write packet Data to the TxFIFO 3015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The controller state. 3025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint we're going to write for. 3035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to write data for. 3045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 3055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is called when the TxFIFO has some space in it to hold a new 3065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transmission and we have something to give it. The actual setup of 3075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the data size is done elsewhere, so all we have to do is to actually 3085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * write the data. 3095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 3105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The return value is zero if there is more space (or nothing was done) 3115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * otherwise -ENOSPC is returned if the FIFO space was used up. 3125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 3135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This routine is only needed for PIO 3148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg, 3165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 3175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req) 3185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool periodic = is_ep_periodic(hs_ep); 32094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gnptxsts = readl(hsotg->regs + GNPTXSTS); 3215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int buf_pos = hs_req->req.actual; 3225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int to_write = hs_ep->size_loaded; 3235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void *data; 3245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int can_write; 3255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int pkt_round; 3264fca54aa5829328a356aea31895b817dacba2861Robert Baldyga int max_transfer; 3275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write -= (buf_pos - hs_ep->last_load); 3295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if there's nothing to write, get out early */ 3315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write == 0) 3325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 3335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33410aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (periodic && !hsotg->dedicated_fifos) { 33594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DIEPTSIZ(hs_ep->index)); 3365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_left; 3375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_done; 3385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3398b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3408b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * work out how much data was loaded so we can calculate 3418b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * how much data is left in the fifo. 3428b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 3455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3468b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3478b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if shared fifo, we cannot write anything until the 348e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks * previous data has been completely sent. 349e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks */ 350e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks if (hs_ep->fifo_load != 0) { 35147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_PTXFEMP); 352e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks return -ENOSPC; 353e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks } 354e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks 3555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: left=%d, load=%d, fifo=%d, size %d\n", 3565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, size_left, 3575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->size_loaded, hs_ep->fifo_load, hs_ep->fifo_size); 3585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* how much of the data has moved */ 3605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 3615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* how much data is left in the fifo */ 3635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = hs_ep->fifo_load - size_done; 3645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: => can_write1=%d\n", 3655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, can_write); 3665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = hs_ep->fifo_size - can_write; 3685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: => can_write2=%d\n", 3695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, can_write); 3705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (can_write <= 0) { 37247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_PTXFEMP); 3735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 3745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 37510aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks } else if (hsotg->dedicated_fifos && hs_ep->index != 0) { 37694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski can_write = readl(hsotg->regs + DTXFSTS(hs_ep->index)); 37710aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 37810aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks can_write &= 0xffff; 37910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks can_write *= 4; 3805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 38147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (GNPTXSTS_NP_TXQ_SPC_AVAIL_GET(gnptxsts) == 0) { 3825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 3835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: no queue slots available (0x%08x)\n", 3845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, gnptxsts); 3855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 38647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_NPTXFEMP); 3875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 3885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 3895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 39047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen can_write = GNPTXSTS_NP_TXF_SPC_AVAIL_GET(gnptxsts); 391679f9b7c7c7d3c746792138e9d7d76578ef52c41Ben Dooks can_write *= 4; /* fifo size is in 32bit quantities. */ 3925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 3935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3944fca54aa5829328a356aea31895b817dacba2861Robert Baldyga max_transfer = hs_ep->ep.maxpacket * hs_ep->mc; 3954fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 3964fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_dbg(hsotg->dev, "%s: GNPTXSTS=%08x, can=%d, to=%d, max_transfer %d\n", 3974fca54aa5829328a356aea31895b817dacba2861Robert Baldyga __func__, gnptxsts, can_write, to_write, max_transfer); 3985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3998b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * limit to 512 bytes of data, it seems at least on the non-periodic 4015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * FIFO, requests of >512 cause the endpoint to get stuck with a 4025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * fragment of the end of the transfer in it. 4035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 404811f33033f9e6a00756e38990d82214c8c619f4cRobert Baldyga if (can_write > 512 && !periodic) 4055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = 512; 4065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4078b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4088b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * limit the write to one max-packet size worth of data, but allow 40903e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks * the transfer to return that it did not run out of fifo space 4108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * doing it. 4118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 4124fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (to_write > max_transfer) { 4134fca54aa5829328a356aea31895b817dacba2861Robert Baldyga to_write = max_transfer; 41403e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks 4155cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga /* it's needed only when we do not use dedicated fifos */ 4165cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga if (!hsotg->dedicated_fifos) 4175cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga s3c_hsotg_en_gsint(hsotg, 41847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen periodic ? GINTSTS_PTXFEMP : 41947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_NPTXFEMP); 42003e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks } 42103e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks 4225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* see if we can write data */ 4235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write > can_write) { 4255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write = can_write; 4264fca54aa5829328a356aea31895b817dacba2861Robert Baldyga pkt_round = to_write % max_transfer; 4275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Round the write down to an 4305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * exact number of packets. 4315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, we do not currently check to see if we can ever 4335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * write a full packet or not to the FIFO. 4345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 4355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (pkt_round) 4375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write -= pkt_round; 4385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4398b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4408b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * enable correct FIFO interrupt to alert us when there 4418b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * is more room left. 4428b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 4435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4445cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga /* it's needed only when we do not use dedicated fifos */ 4455cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga if (!hsotg->dedicated_fifos) 4465cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga s3c_hsotg_en_gsint(hsotg, 44747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen periodic ? GINTSTS_PTXFEMP : 44847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_NPTXFEMP); 4495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 4505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "write %d/%d, can_write %d, done %d\n", 4525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write, hs_req->req.length, can_write, buf_pos); 4535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write <= 0) 4555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 4565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual = buf_pos + to_write; 4585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->total_data += to_write; 4595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (periodic) 4615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->fifo_load += to_write; 4625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write = DIV_ROUND_UP(to_write, 4); 4645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks data = hs_req->req.buf + buf_pos; 4655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4661a7ed5bec407478b9ce5e3267708110277851614Matt Porter iowrite32_rep(hsotg->regs + EPFIFO(hs_ep->index), data, to_write); 4675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return (to_write >= can_write) ? -ENOSPC : 0; 4695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 4705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 4725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * get_ep_limit - get the maximum data legnth for this endpoint 4735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint 4745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return the maximum data that can be queued in one go on a given endpoint 4765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so that transfers that are too long can be split. 4775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 4785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic unsigned get_ep_limit(struct s3c_hsotg_ep *hs_ep) 4795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 4805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 4815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxsize; 4825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxpkt; 4835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0) { 48547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxsize = DXEPTSIZ_XFERSIZE_LIMIT + 1; 48647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxpkt = DXEPTSIZ_PKTCNT_LIMIT + 1; 4875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 488b05ca580c39314c8527e2e1c36a823970cc01683Ben Dooks maxsize = 64+64; 48966e5c643488a26d2a6b737bdbd92fc72f13cdeacJingoo Han if (hs_ep->dir_in) 49047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxpkt = DIEPTSIZ0_PKTCNT_LIMIT + 1; 49166e5c643488a26d2a6b737bdbd92fc72f13cdeacJingoo Han else 4925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxpkt = 2; 4935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 4945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* we made the constant loading easier above by using +1 */ 4965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxpkt--; 4975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxsize--; 4985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4998b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 5008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * constrain by packet count if maxpkts*pktsize is greater 5018b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * than the length register size. 5028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 5035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((maxpkt * hs_ep->ep.maxpacket) < maxsize) 5055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxsize = maxpkt * hs_ep->ep.maxpacket; 5065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return maxsize; 5085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 5095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 5115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_start_req - start a USB request from an endpoint's queue 5125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The controller state. 5135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to process a request for 5145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to start. 5155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @continuing: True if we are doing more for the current request. 5165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 5175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Start the given request running by setting the endpoint registers 5185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * appropriately, and writing any data to the FIFOs. 5195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 5205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_start_req(struct s3c_hsotg *hsotg, 5215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 5225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req, 5235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool continuing) 5245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 5255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *ureq = &hs_req->req; 5265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 5275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in = hs_ep->dir_in; 5285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 5295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epsize_reg; 5305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epsize; 5315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 5325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned length; 5335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned packets; 5345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxreq; 5355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0) { 5375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_ep->req && !continuing) { 5385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: active request\n", __func__); 5395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 5405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 5415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else if (hs_ep->req != hs_req && continuing) { 5425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, 5435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: continue different req\n", __func__); 5445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 5455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 5465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 54994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 55094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epsize_reg = dir_in ? DIEPTSIZ(index) : DOEPTSIZ(index); 5515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x, ep %d, dir %s\n", 5535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg), index, 5545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->dir_in ? "in" : "out"); 5555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5569c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* If endpoint is stalled, we will restart request later */ 5579c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov ctrl = readl(hsotg->regs + epctrl_reg); 5589c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 55947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ctrl & DXEPCTL_STALL) { 5609c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov dev_warn(hsotg->dev, "%s: ep%d is stalled\n", __func__, index); 5619c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return; 5629c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 5639c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 5645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks length = ureq->length - ureq->actual; 56571225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski dev_dbg(hsotg->dev, "ureq->length:%d ureq->actual:%d\n", 56671225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski ureq->length, ureq->actual); 5675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (0) 5685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 5690cc4cf6f3049fe174b6698016e046a233a2a6045Fabio Estevam "REQ buf %p len %d dma %pad noi=%d zp=%d snok=%d\n", 5708b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han ureq->buf, length, &ureq->dma, 5715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ureq->no_interrupt, ureq->zero, ureq->short_not_ok); 5725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxreq = get_ep_limit(hs_ep); 5745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length > maxreq) { 5755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int round = maxreq % hs_ep->ep.maxpacket; 5765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: length %d, max-req %d, r %d\n", 5785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, length, maxreq, round); 5795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* round down to multiple of packets */ 5815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (round) 5825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxreq -= round; 5835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks length = maxreq; 5855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length) 5885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets = DIV_ROUND_UP(length, hs_ep->ep.maxpacket); 5895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 5905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets = 1; /* send one packet if length is zero. */ 5915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5924fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->isochronous && length > (hs_ep->mc * hs_ep->ep.maxpacket)) { 5934fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_err(hsotg->dev, "req length > maxpacket*mc\n"); 5944fca54aa5829328a356aea31895b817dacba2861Robert Baldyga return; 5954fca54aa5829328a356aea31895b817dacba2861Robert Baldyga } 5964fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 5975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in && index != 0) 5984fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->isochronous) 59947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize = DXEPTSIZ_MC(packets); 6004fca54aa5829328a356aea31895b817dacba2861Robert Baldyga else 60147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize = DXEPTSIZ_MC(1); 6025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 6035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epsize = 0; 6045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0 && ureq->zero) { 6068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6078b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * test for the packets being exactly right for the 6088b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transfer 6098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length == (packets * hs_ep->ep.maxpacket)) 6125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets++; 6135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 6145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 61547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize |= DXEPTSIZ_PKTCNT(packets); 61647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize |= DXEPTSIZ_XFERSIZE(length); 6175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %d@%d/%d, 0x%08x => 0x%08x\n", 6195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, packets, length, ureq->length, epsize, epsize_reg); 6205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* store the request as the current one we're doing */ 6225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->req = hs_req; 6235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* write size / packets */ 6255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epsize, hsotg->regs + epsize_reg); 6265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 627db1d8ba36551bf55222c7961d9e9a1195a612fdeAnton Tikhomirov if (using_dma(hsotg) && !continuing) { 6285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int dma_reg; 6295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6308b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6318b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * write DMA address to control register, buffer already 6328b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * synced by s3c_hsotg_ep_queue(). 6338b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 63594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dma_reg = dir_in ? DIEPDMA(index) : DOEPDMA(index); 6365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ureq->dma, hsotg->regs + dma_reg); 6375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6380cc4cf6f3049fe174b6698016e046a233a2a6045Fabio Estevam dev_dbg(hsotg->dev, "%s: %pad => 0x%08x\n", 6398b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han __func__, &ureq->dma, dma_reg); 6405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 6415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 64247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ 64347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_USBACTEP; 64471225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 64571225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski dev_dbg(hsotg->dev, "setup req:%d\n", hsotg->setup); 64671225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 64771225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski /* For Setup request do not clear NAK */ 64871225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski if (hsotg->setup && index == 0) 64971225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski hsotg->setup = 0; 65071225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski else 65147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ 65271225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 6535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); 6555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ctrl, hsotg->regs + epctrl_reg); 6565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set these, it seems that DMA support increments past the end 6595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the packet buffer so we need to calculate the length from 6608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * this information. 6618b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->size_loaded = length; 6635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->last_load = ureq->actual; 6645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in && !using_dma(hsotg)) { 6665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* set these anyway, we may need them for non-periodic in */ 6675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->fifo_load = 0; 6685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); 6705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 6715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6728b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * clear the INTknTXFEmpMsk when we start request, more as a aide 6748b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * to debugging to see what is going on. 6758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) 67747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DIEPMSK_INTKNTXFEMPMSK, 67894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DIEPINT(index)); 6795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Note, trying to clear the NAK here causes problems with transmit 6828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * on the S3C6400 ending up with the TXFIFO becoming full. 6838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* check ep is enabled */ 68647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (!(readl(hsotg->regs + epctrl_reg) & DXEPCTL_EPENA)) 6875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, 68847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "ep%d: failed to become enabled (DXEPCTL=0x%08x)?\n", 6895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks index, readl(hsotg->regs + epctrl_reg)); 6905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 69147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dev_dbg(hsotg->dev, "%s: DXEPCTL=0x%08x\n", 6925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg)); 693afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga 694afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga /* enable ep interrupts */ 695afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 1); 6965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 6975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 6995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_map_dma - map the DMA memory being used for the request 7005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 7015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint the request is on. 7025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request being processed. 7035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 7045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We've been asked to queue a request, so ensure that the memory buffer 7055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is correctly setup for DMA. If we've been passed an extant DMA address 7065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * then ensure the buffer has been synced to memory. If our buffer has no 7075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * DMA memory, then we map the memory and mark our request to allow us to 7085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * cleanup on completion. 7098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 7105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_map_dma(struct s3c_hsotg *hsotg, 7115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 7125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 7135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 7145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 715e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi int ret; 7165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if the length is zero, ignore the DMA data */ 7185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.length == 0) 7195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 7205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 721e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi ret = usb_gadget_map_request(&hsotg->gadget, req, hs_ep->dir_in); 722e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi if (ret) 723e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi goto dma_error; 7245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 7265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksdma_error: 7285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to map buffer %p, %d bytes\n", 7295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, req->buf, req->length); 7305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EIO; 7325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, 7355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks gfp_t gfp_flags) 7365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 7375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 7385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 7395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 7405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool first; 7415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n", 7435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->name, req, req->length, req->buf, req->no_interrupt, 7445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero, req->short_not_ok); 7455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* initialise status of the request */ 7475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_req->queue); 7485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->actual = 0; 7495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->status = -EINPROGRESS; 7505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if we're using DMA, sync the buffers as necessary */ 7525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hs)) { 7535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret = s3c_hsotg_map_dma(hs, hs_ep, req); 7545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) 7555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 7565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 7575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks first = list_empty(&hs_ep->queue); 7595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_add_tail(&hs_req->queue, &hs_ep->queue); 7605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (first) 7625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hs, hs_ep, hs_req, false); 7635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 7655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7675ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewskistatic int s3c_hsotg_ep_queue_lock(struct usb_ep *ep, struct usb_request *req, 7685ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski gfp_t gfp_flags) 7695ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski{ 7705ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg_ep *hs_ep = our_ep(ep); 7715ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg *hs = hs_ep->parent; 7725ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski unsigned long flags = 0; 7735ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski int ret = 0; 7745ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 7755ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hs->lock, flags); 7765ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski ret = s3c_hsotg_ep_queue(ep, req, gfp_flags); 7775ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 7785ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 7795ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski return ret; 7805ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski} 7815ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 7825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_ep_free_request(struct usb_ep *ep, 7835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 7845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 7855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 7865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kfree(hs_req); 7885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 7915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_oursetup - setup completion callback 7925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the request was on. 7935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request completed. 7945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 7955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Called on completion of any requests the driver itself 7965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * submitted that need cleaning up. 7975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 7985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_oursetup(struct usb_ep *ep, 7995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 8005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 8025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 8035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep %p, req %p\n", __func__, ep, req); 8055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_free_request(ep, req); 8075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 8085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 8105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * ep_from_windex - convert control wIndex value to endpoint 8115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 8125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @windex: The control request wIndex field (in host order). 8135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 8145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Convert the given wIndex into a pointer to an driver endpoint 8155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * structure, or return NULL if it is not a valid endpoint. 8168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 8175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct s3c_hsotg_ep *ep_from_windex(struct s3c_hsotg *hsotg, 8185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 windex) 8195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[windex & 0x7F]; 8215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir = (windex & USB_DIR_IN) ? 1 : 0; 8225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx = windex & 0x7F; 8235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (windex >= 0x100) 8255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 8265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 827b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (idx > hsotg->num_of_eps) 8285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 8295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (idx && ep->dir_in != dir) 8315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 8325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ep; 8345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 8355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 8375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_send_reply - send reply to control request 8385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 8395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: Endpoint 0 8405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @buff: Buffer for request 8415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @length: Length of reply. 8425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 8435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Create a request and queue it on the given endpoint. This is useful as 8445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * an internal method of sending replies to certain control requests, etc. 8455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 8465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_send_reply(struct s3c_hsotg *hsotg, 8475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep, 8485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void *buff, 8495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int length) 8505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req; 8525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 8535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: buff %p, len %d\n", __func__, buff, length); 8555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req = s3c_hsotg_ep_alloc_request(&ep->ep, GFP_ATOMIC); 8575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->ep0_reply = req; 8585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) { 8595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: cannot alloc req\n", __func__); 8605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOMEM; 8615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 8625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->buf = hsotg->ep0_buff; 8645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->length = length; 8655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero = 1; /* always do zero-length final transfer */ 8665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->complete = s3c_hsotg_complete_oursetup; 8675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length) 8695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks memcpy(req->buf, buff, length); 8705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 8715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->sent_zlp = 1; 8725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_ep_queue(&ep->ep, req, GFP_ATOMIC); 8745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 8755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: cannot queue req\n", __func__); 8765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 8775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 8785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 8805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 8815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 8835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_req_status - process request GET_STATUS 8845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 8855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: USB control request 8865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 8875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_process_req_status(struct s3c_hsotg *hsotg, 8885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 8895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 8915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 8925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __le16 reply; 8935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 8945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: USB_REQ_GET_STATUS\n", __func__); 8965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep0->dir_in) { 8985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: direction out?\n", __func__); 8995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 9005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (ctrl->bRequestType & USB_RECIP_MASK) { 9035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_DEVICE: 9045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(0); /* bit 0 => self powered, 9055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * bit 1 => remote wakeup */ 9065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 9075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_INTERFACE: 9095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* currently, the data result should be zero */ 9105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(0); 9115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 9125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_ENDPOINT: 9145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); 9155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep) 9165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 9175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(ep->halted ? 1 : 0); 9195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 9205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 9225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 9235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (le16_to_cpu(ctrl->wLength) != 2) 9265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 9275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_send_reply(hsotg, ep0, &reply, 2); 9295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 9305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to send reply\n", __func__); 9315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 9325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 1; 9355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 9365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value); 9385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 9409c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * get_ep_head - return the first request on the endpoint 9419c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @hs_ep: The controller endpoint to get 9429c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * 9439c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * Get the first request on the endpoint. 9449c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 9459c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirovstatic struct s3c_hsotg_req *get_ep_head(struct s3c_hsotg_ep *hs_ep) 9469c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov{ 9479c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (list_empty(&hs_ep->queue)) 9489c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return NULL; 9499c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 9509c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return list_first_entry(&hs_ep->queue, struct s3c_hsotg_req, queue); 9519c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov} 9529c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 9539c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov/** 9545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_req_featire - process request {SET,CLEAR}_FEATURE 9555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 9565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: USB control request 9575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 9585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg, 9595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 9605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 96126ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 9629c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov struct s3c_hsotg_req *hs_req; 9639c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov bool restart; 9645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE); 9655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 96626ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov int ret; 967bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga bool halted; 9685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %s_FEATURE\n", 9705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, set ? "SET" : "CLEAR"); 9715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ctrl->bRequestType == USB_RECIP_ENDPOINT) { 9735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); 9745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep) { 9755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: no endpoint for 0x%04x\n", 9765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, le16_to_cpu(ctrl->wIndex)); 9775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 9785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (le16_to_cpu(ctrl->wValue)) { 9815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_HALT: 982bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga halted = ep->halted; 983bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga 9845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_sethalt(&ep->ep, set); 98526ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov 98626ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); 98726ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov if (ret) { 98826ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov dev_err(hsotg->dev, 98926ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov "%s: failed to send reply\n", __func__); 99026ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov return ret; 99126ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov } 9929c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 993bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga /* 994bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga * we have to complete all requests for ep if it was 995bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga * halted, and the halt was cleared by CLEAR_FEATURE 996bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga */ 997bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga 998bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga if (!set && halted) { 9999c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* 10009c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * If we have request in progress, 10019c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * then complete it 10029c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 10039c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (ep->req) { 10049c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req = ep->req; 10059c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov ep->req = NULL; 10069c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov list_del_init(&hs_req->queue); 1007304f7e5e1d08fa2f5674c1323bd0ebd806c86b81Michal Sojka usb_gadget_giveback_request(&ep->ep, 1008304f7e5e1d08fa2f5674c1323bd0ebd806c86b81Michal Sojka &hs_req->req); 10099c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 10109c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 10119c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* If we have pending request, then start it */ 10129c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov restart = !list_empty(&ep->queue); 10139c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (restart) { 10149c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req = get_ep_head(ep); 10159c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov s3c_hsotg_start_req(hsotg, ep, 10169c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req, false); 10179c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 10189c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 10199c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 10205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 10215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 10235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 10245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 10255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else 10265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; /* currently only deal with endpoint */ 10275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 1; 10295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 10305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1031ab93e014f35374a8169b0f465fccee69e04ea34cRobert Baldygastatic void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg); 1032d18f7116a5ddb8263fe62b05ad63e5ceb5875791Robert Baldygastatic void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg); 1033ab93e014f35374a8169b0f465fccee69e04ea34cRobert Baldyga 10345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1035c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * s3c_hsotg_stall_ep0 - stall ep0 1036c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * @hsotg: The device state 1037c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * 1038c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * Set stall for ep0 as response for setup request. 1039c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1040e9ebe7c3b76c24fd5bc2f3b99db453ea71c3072bJingoo Hanstatic void s3c_hsotg_stall_ep0(struct s3c_hsotg *hsotg) 1041e9ebe7c3b76c24fd5bc2f3b99db453ea71c3072bJingoo Han{ 1042c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 1043c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga u32 reg; 1044c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga u32 ctrl; 1045c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1046c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in); 1047c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga reg = (ep0->dir_in) ? DIEPCTL0 : DOEPCTL0; 1048c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1049c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga /* 1050c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * DxEPCTL_Stall will be cleared by EP once it has 1051c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * taken effect, so no need to clear later. 1052c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1053c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1054c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga ctrl = readl(hsotg->regs + reg); 105547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_STALL; 105647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; 1057c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga writel(ctrl, hsotg->regs + reg); 1058c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1059c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_dbg(hsotg->dev, 106047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "written DXEPCTL=0x%08x to %08x (DXEPCTL=0x%08x)\n", 1061c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga ctrl, reg, readl(hsotg->regs + reg)); 1062c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1063c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga /* 1064c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * complete won't be called, so we enqueue 1065c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * setup request here 1066c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1067c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_enqueue_setup(hsotg); 1068c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga} 1069c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1070c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga/** 10715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_control - process a control request 10725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 10735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: The control request received 10745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 10755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The controller has received the SETUP phase of a control request, and 10765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * needs to work out what to do next (and whether to pass it on to the 10775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * gadget driver). 10785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 10795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_process_control(struct s3c_hsotg *hsotg, 10805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 10815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 10825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 10835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret = 0; 10845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 dcfg; 10855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->sent_zlp = 0; 10875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ctrl Req=%02x, Type=%02x, V=%04x, L=%04x\n", 10895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl->bRequest, ctrl->bRequestType, 10905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl->wValue, ctrl->wLength); 10915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 10938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * record the direction of the request, for later use when enquing 10948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * packets onto EP0. 10958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 10965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->dir_in = (ctrl->bRequestType & USB_DIR_IN) ? 1 : 0; 10985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ctrl: dir_in=%d\n", ep0->dir_in); 10995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 11018b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we've no data with this request, then the last part of the 11028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transaction is going to implicitly be IN. 11038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 11045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ctrl->wLength == 0) 11055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->dir_in = 1; 11065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { 11085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (ctrl->bRequest) { 11095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_SET_ADDRESS: 1110d18f7116a5ddb8263fe62b05ad63e5ceb5875791Robert Baldyga s3c_hsotg_disconnect(hsotg); 111194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dcfg = readl(hsotg->regs + DCFG); 111247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dcfg &= ~DCFG_DEVADDR_MASK; 1113d5dbd3f7d82223b59dc2200c0e9f4f95665a21a4Paul Zimmerman dcfg |= (le16_to_cpu(ctrl->wValue) << 1114d5dbd3f7d82223b59dc2200c0e9f4f95665a21a4Paul Zimmerman DCFG_DEVADDR_SHIFT) & DCFG_DEVADDR_MASK; 111594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(dcfg, hsotg->regs + DCFG); 11165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "new address %d\n", ctrl->wValue); 11185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); 11205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 11215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_GET_STATUS: 11235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_process_req_status(hsotg, ctrl); 11245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 11255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_CLEAR_FEATURE: 11275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_SET_FEATURE: 11285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_process_req_feature(hsotg, ctrl); 11295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 11305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* as a fallback, try delivering it to the driver to deal with */ 11345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret == 0 && hsotg->driver) { 113693f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_unlock(&hsotg->lock); 11375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = hsotg->driver->setup(&hsotg->gadget, ctrl); 113893f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_lock(&hsotg->lock); 11395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) 11405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "driver->setup() ret %d\n", ret); 11415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11438b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 11448b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the request is either unhandlable, or is not formatted correctly 11455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so respond with a STALL for the status stage to indicate failure. 11465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1148c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (ret < 0) 1149c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_stall_ep0(hsotg); 11505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 11515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 11535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_setup - completion of a setup transfer 11545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the request was on. 11555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request completed. 11565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 11575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Called on completion of any requests the driver itself submitted for 11585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * EP0 setup packets 11595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_setup(struct usb_ep *ep, 11615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 11625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 11635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 11645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 11655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->status < 0) { 11675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: failed %d\n", __func__, req->status); 11685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 11695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 117193f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_lock(&hsotg->lock); 11725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->actual == 0) 11735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 11745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 11755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_process_control(hsotg, req->buf); 117693f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_unlock(&hsotg->lock); 11775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 11785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 11805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_enqueue_setup - start a request for EP0 packets 11815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 11825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 11835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Enqueue a request on EP0 if necessary to received any SETUP packets 11845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * received from the host. 11855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg) 11875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 11885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = hsotg->ctrl_req; 11895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 11905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 11915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: queueing setup request\n", __func__); 11935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero = 0; 11955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->length = 8; 11965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->buf = hsotg->ctrl_buff; 11975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->complete = s3c_hsotg_complete_setup; 11985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!list_empty(&hs_req->queue)) { 12005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s already queued???\n", __func__); 12015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 12025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].dir_in = 0; 12055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_ep_queue(&hsotg->eps[0].ep, req, GFP_ATOMIC); 12075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 12085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed queue (%d)\n", __func__, ret); 12098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Don't think there's much we can do other than watch the 12118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * driver fail. 12128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 12155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 12175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_request - complete a request given to us 12185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 12195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint the request was on. 12205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to complete. 12215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @result: The result code (0 => Ok, otherwise errno) 12225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The given request has finished, so call the necessary completion 12245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * if it has one and then look to see if we can start a new request 12255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on the endpoint. 12265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, expects the ep to already be locked as appropriate. 12288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg, 12305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 12315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req, 12325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result) 12335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 12345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool restart; 12355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 12375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: nothing to complete?\n", __func__); 12385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 12395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "complete: ep %p %s, req %p, %d => %p\n", 12425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep, hs_ep->ep.name, hs_req, result, hs_req->req.complete); 12435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12448b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12458b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * only replace the status if we've not already set an error 12468b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * from a previous transaction 12478b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.status == -EINPROGRESS) 12505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.status = result; 12515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->req = NULL; 12535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_del_init(&hs_req->queue); 12545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) 12565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_unmap_dma(hsotg, hs_ep, hs_req); 12575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * call the complete request with the locks off, just in case the 12608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * request tries to queue more work for this endpoint. 12618b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.complete) { 126422258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock(&hsotg->lock); 1265304f7e5e1d08fa2f5674c1323bd0ebd806c86b81Michal Sojka usb_gadget_giveback_request(&hs_ep->ep, &hs_req->req); 126622258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock(&hsotg->lock); 12675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12698b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12708b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Look to see if there is anything else to do. Note, the completion 12715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the previous request may have caused a new request to be started 12728b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * so be careful when doing this. 12738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_ep->req && result >= 0) { 12765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks restart = !list_empty(&hs_ep->queue); 12775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (restart) { 12785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req = get_ep_head(hs_ep); 12795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, false); 12805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 12835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 12855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_rx_data - receive data from the FIFO for an endpoint 12865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 12875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep_idx: The endpoint index for the data 12885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @size: The size of data in the fifo, in bytes 12895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The FIFO status shows there is data to read from the FIFO for a given 12915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * endpoint, so sort out whether we need to read the data into a request 12925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that has been made for that endpoint. 12935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 12945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size) 12955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 12965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep_idx]; 12975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 129894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski void __iomem *fifo = hsotg->regs + EPFIFO(ep_idx); 12995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int to_read; 13005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int max_req; 13015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int read_ptr; 13025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 130322258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski 13045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 130594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epctl = readl(hsotg->regs + DOEPCTL(ep_idx)); 13065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ptr; 13075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, 130947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "%s: FIFO %d bytes on ep%d but no req (DXEPCTl=0x%08x)\n", 13105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, size, ep_idx, epctl); 13115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* dump the data from the FIFO, we've nothing we can do */ 13135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ptr = 0; ptr < size; ptr += 4) 13145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks (void)readl(fifo); 13155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_read = size; 13205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks read_ptr = hs_req->req.actual; 13215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks max_req = hs_req->req.length - read_ptr; 13225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1323a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks dev_dbg(hsotg->dev, "%s: read %d/%d, done %d/%d\n", 1324a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks __func__, to_read, max_req, read_ptr, hs_req->req.length); 1325a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks 13265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_read > max_req) { 13278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 13288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * more data appeared than we where willing 13295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to deal with in this request. 13305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 13315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* currently we don't deal this */ 13335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON_ONCE(1); 13345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->total_data += to_read; 13375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual += to_read; 13385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_read = DIV_ROUND_UP(to_read, 4); 13395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13408b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 13418b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, we might over-write the buffer end by 3 bytes depending on 13428b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * alignment of the data. 13438b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 13441a7ed5bec407478b9ce5e3267708110277851614Matt Porter ioread32_rep(fifo, hs_req->req.buf + read_ptr, to_read); 13455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 13465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 13485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_send_zlp - send zero-length packet on control endpoint 13495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 13505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request currently on this endpoint 13515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Generate a zero-length IN packet request for terminating a SETUP 13535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transaction. 13545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, since we don't write any data to the TxFIFO, then it is 135625985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * currently believed that we do not need to wait for any space in 13575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the TxFIFO. 13585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 13595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_send_zlp(struct s3c_hsotg *hsotg, 13605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req) 13615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 13625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 13635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) { 13655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: no request?\n", __func__); 13665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->req.length == 0) { 13705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].sent_zlp = 1; 13715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 13725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].dir_in = 1; 13765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].sent_zlp = 1; 13775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "sending zero-length packet\n"); 13795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* issue a zero-sized packet to terminate this */ 138147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | 138247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPTSIZ_XFERSIZE(0), hsotg->regs + DIEPTSIZ(0)); 13835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 138494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski ctrl = readl(hsotg->regs + DIEPCTL0); 138547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ 138647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ 138747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_USBACTEP; 138894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(ctrl, hsotg->regs + DIEPCTL0); 13895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 13905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 13925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_handle_outdone - handle receiving OutDone/SetupDone from RXFIFO 13935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 13945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @epnum: The endpoint received from 13955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @was_setup: Set if processing a SetupDone event. 13965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The RXFIFO has delivered an OutDone event, which means that the data 13985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transfer for an OUT endpoint has been completed, either by a short 13995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * packet or by the finish of a transfer. 14008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg, 14025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum, bool was_setup) 14035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 140494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DOEPTSIZ(epnum)); 14055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[epnum]; 14065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 14075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = &hs_req->req; 140847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen unsigned size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 14095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result = 0; 14105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 14125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: no request active\n", __func__); 14135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 14145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) { 14175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned size_done; 14185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Calculate the size of the transfer by checking how much 14215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is left in the endpoint size register and then working it 14225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * out from the amount we loaded for the transfer. 14235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We need to do this as DMA pointers are always 32bit aligned 14255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so may overshoot/undershoot the transfer. 14265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 14275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 14295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done += hs_ep->last_load; 14305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->actual = size_done; 14325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1434a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks /* if there is more request to do, schedule new transfer */ 1435a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks if (req->actual < req->length && size_left == 0) { 1436a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); 1437a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks return; 143871225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski } else if (epnum == 0) { 143971225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski /* 144071225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski * After was_setup = 1 => 144171225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski * set CNAK for non Setup requests 144271225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski */ 144371225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski hsotg->setup = was_setup ? 0 : 1; 1444a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks } 1445a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks 14465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->actual < req->length && req->short_not_ok) { 14475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: got %d/%d (short not ok) => error\n", 14485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, req->actual, req->length); 14495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14508b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14518b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * todo - what should we return here? there's no one else 14528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * even bothering to check the status. 14538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum == 0) { 1457d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* 1458d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Condition req->complete != s3c_hsotg_complete_setup says: 1459d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * send ZLP when we have an asynchronous request from gadget 1460d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski */ 14615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!was_setup && req->complete != s3c_hsotg_complete_setup) 14625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_send_zlp(hsotg, hs_req); 14635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14655ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result); 14665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 14675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 14695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_read_frameno - read current frame number 14705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 14715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return the current frame number 14738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic u32 s3c_hsotg_read_frameno(struct s3c_hsotg *hsotg) 14755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 14765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 dsts; 14775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 147894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts = readl(hsotg->regs + DSTS); 147994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts &= DSTS_SOFFN_MASK; 148094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts >>= DSTS_SOFFN_SHIFT; 14815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return dsts; 14835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 14845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 14865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_handle_rx - RX FIFO has data 14875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 14885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The IRQ handler has detected that the RX FIFO has some data in it 14905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that requires processing, so find out what is in there and do the 14915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * appropriate read. 14925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 149325985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * The RXFIFO is a true FIFO, the packets coming out are still in packet 14945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * chunks, so if you have x packets received on an endpoint you'll get x 14955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * FIFO events delivered, each with a packet's worth of data in it. 14965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * When using DMA, we should not be processing events from the RXFIFO 14985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * as the actual data should be sent to the memory directly and we turn 14995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on the completion interrupts to get notifications of transfer completion. 15005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 15010978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brownstatic void s3c_hsotg_handle_rx(struct s3c_hsotg *hsotg) 15025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 150394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 grxstsr = readl(hsotg->regs + GRXSTSP); 15045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epnum, status, size; 15055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(using_dma(hsotg)); 15075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 150847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epnum = grxstsr & GRXSTS_EPNUM_MASK; 150947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen status = grxstsr & GRXSTS_PKTSTS_MASK; 15105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 151147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size = grxstsr & GRXSTS_BYTECNT_MASK; 151247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size >>= GRXSTS_BYTECNT_SHIFT; 15135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (1) 15155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: GRXSTSP=0x%08x (%d@%d)\n", 15165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, grxstsr, size, epnum); 15175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 151847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen switch ((status & GRXSTS_PKTSTS_MASK) >> GRXSTS_PKTSTS_SHIFT) { 151947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_GLOBALOUTNAK: 152047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dev_dbg(hsotg->dev, "GLOBALOUTNAK\n"); 15215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 152347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_OUTDONE: 15245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "OutDone (Frame=0x%08x)\n", 15255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg)); 15265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!using_dma(hsotg)) 15285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, epnum, false); 15295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 153147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_SETUPDONE: 15325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 15335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "SetupDone (Frame=0x%08x, DOPEPCTL=0x%08x)\n", 15345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg), 153594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL(0))); 15365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, epnum, true); 15385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 154047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_OUTRX: 15415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_rx_data(hsotg, epnum, size); 15425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 154447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_SETUPRX: 15455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 15465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "SetupRX (Frame=0x%08x, DOPEPCTL=0x%08x)\n", 15475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg), 154894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL(0))); 15495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_rx_data(hsotg, epnum, size); 15515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 15545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: unknown status %08x\n", 15555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, grxstsr); 15565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_dump(hsotg); 15585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 15615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 15635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ep0_mps - turn max packet size into register setting 15645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @mps: The maximum packet size in bytes. 15658b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 15665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic u32 s3c_hsotg_ep0_mps(unsigned int mps) 15675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 15685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (mps) { 15695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 64: 157094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_64; 15715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 32: 157294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_32; 15735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 16: 157494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_16; 15755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 8: 157694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_8; 15775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* bad max packet size, warn and return invalid result */ 15805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 15815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return (u32)-1; 15825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 15835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 15855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_set_ep_maxpacket - set endpoint's max-packet field 15865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 15875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The index number of the endpoint 15885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @mps: The maximum packet size in bytes 15895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 15905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Configure the maximum packet size for the given endpoint, updating 15915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the hardware control registers to reflect this. 15925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 15935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg, 15945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int ep, unsigned int mps) 15955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 15965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep]; 15975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 15985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 mpsval; 15994fca54aa5829328a356aea31895b817dacba2861Robert Baldyga u32 mcval; 16005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 reg; 16015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep == 0) { 16035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* EP0 is a special case */ 16045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks mpsval = s3c_hsotg_ep0_mps(mps); 16055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (mpsval > 3) 16065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto bad_mps; 1607e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga hs_ep->ep.maxpacket = mps; 16084fca54aa5829328a356aea31895b817dacba2861Robert Baldyga hs_ep->mc = 1; 16095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 161047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen mpsval = mps & DXEPCTL_MPS_MASK; 1611e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga if (mpsval > 1024) 16125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto bad_mps; 16134fca54aa5829328a356aea31895b817dacba2861Robert Baldyga mcval = ((mps >> 11) & 0x3) + 1; 16144fca54aa5829328a356aea31895b817dacba2861Robert Baldyga hs_ep->mc = mcval; 16154fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (mcval > 3) 16164fca54aa5829328a356aea31895b817dacba2861Robert Baldyga goto bad_mps; 1617e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga hs_ep->ep.maxpacket = mpsval; 16185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 16195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 16218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * update both the in and out endpoint controldir_ registers, even 16228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if one of the directions may not be in use. 16238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 16245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 162594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski reg = readl(regs + DIEPCTL(ep)); 162647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen reg &= ~DXEPCTL_MPS_MASK; 16275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reg |= mpsval; 162894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(reg, regs + DIEPCTL(ep)); 16295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1630659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov if (ep) { 163194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski reg = readl(regs + DOEPCTL(ep)); 163247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen reg &= ~DXEPCTL_MPS_MASK; 1633659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov reg |= mpsval; 163494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(reg, regs + DOEPCTL(ep)); 1635659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov } 16365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 16385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksbad_mps: 16405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "ep%d: bad mps of %d\n", ep, mps); 16415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 16425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16439c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov/** 16449c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * s3c_hsotg_txfifo_flush - flush Tx FIFO 16459c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @hsotg: The driver state 16469c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @idx: The index for the endpoint (0..15) 16479c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 16489c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirovstatic void s3c_hsotg_txfifo_flush(struct s3c_hsotg *hsotg, unsigned int idx) 16499c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov{ 16509c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int timeout; 16519c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int val; 16529c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 165347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_TXFNUM(idx) | GRSTCTL_TXFFLSH, 165494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GRSTCTL); 16559c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16569c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* wait until the fifo is flushed */ 16579c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov timeout = 100; 16589c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16599c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov while (1) { 166094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(hsotg->regs + GRSTCTL); 16619c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 166247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((val & (GRSTCTL_TXFFLSH)) == 0) 16639c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov break; 16649c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16659c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (--timeout == 0) { 16669c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov dev_err(hsotg->dev, 16679c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov "%s: timeout flushing fifo (GRSTCTL=%08x)\n", 16689c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov __func__, val); 1669e0cbe595db72b037260bbda77106f6811a1ebb1dMarek Szyprowski break; 16709c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 16719c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16729c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov udelay(1); 16739c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 16749c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov} 16755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 16775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_trytx - check to see if anything needs transmitting 16785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 16795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The driver endpoint to check. 16805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 16815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Check to see if there is a request that has data to send, and if so 16825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * make an attempt to write data into the FIFO. 16835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 16845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_trytx(struct s3c_hsotg *hsotg, 16855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep) 16865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 16875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 16885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1689afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga if (!hs_ep->dir_in || !hs_req) { 1690afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga /** 1691afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga * if request is not enqueued, we disable interrupts 1692afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga * for endpoints, excepting ep0 1693afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga */ 1694afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga if (hs_ep->index != 0) 1695afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, 1696afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga hs_ep->dir_in, 0); 16975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 1698afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga } 16995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.actual < hs_req->req.length) { 17015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "trying to write more for ep%d\n", 17025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->index); 17035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); 17045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 17055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 17075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 17085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 17105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_in - complete IN transfer 17115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 17125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint that has just completed. 17135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 17145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * An IN transfer has been completed, update the transfer's state and then 17155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * call the relevant completion routines. 17165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 17175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg, 17185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep) 17195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 17205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 172194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DIEPTSIZ(hs_ep->index)); 17225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_left, size_done; 17235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 17255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "XferCompl but no req\n"); 17265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 17275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 17285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1729d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* Finish ZLP handling for IN EP0 transactions */ 1730d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski if (hsotg->eps[0].sent_zlp) { 1731d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "zlp packet received\n"); 17325ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); 1733d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski return; 1734d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski } 1735d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 17368b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 17378b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Calculate the size of the transfer by checking how much is left 17385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * in the endpoint size register and then working it out from 17395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the amount we loaded for the transfer. 17405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 17415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We do this even for DMA, as the transfer may have incremented 17425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * past the end of the buffer (DMA transfers are always 32bit 17435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * aligned). 17445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 17455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 174647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 17475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 17495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done += hs_ep->last_load; 17505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.actual != size_done) 17525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: adjusting size done %d => %d\n", 17535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, hs_req->req.actual, size_done); 17545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual = size_done; 1756d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "req->length:%d req->actual:%d req->zero:%d\n", 1757d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski hs_req->req.length, hs_req->req.actual, hs_req->req.zero); 1758d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 1759d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* 1760d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Check if dealing with Maximum Packet Size(MPS) IN transfer at EP0 1761d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * When sent data is a multiple MPS size (e.g. 64B ,128B ,192B 1762d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * ,256B ... ), after last MPS sized packet send IN ZLP packet to 1763d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * inform the host that no more data is available. 1764d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * The state of req.zero member is checked to be sure that the value to 1765d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * send is smaller than wValue expected from host. 1766d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Check req.length to NOT send another ZLP when the current one is 1767d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * under completion (the one for which this completion has been called). 1768d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski */ 1769d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski if (hs_req->req.length && hs_ep->index == 0 && hs_req->req.zero && 1770d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski hs_req->req.length == hs_req->req.actual && 1771d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski !(hs_req->req.length % hs_ep->ep.maxpacket)) { 1772d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 1773d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "ep0 zlp IN packet sent\n"); 1774d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski s3c_hsotg_send_zlp(hsotg, hs_req); 17755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1776d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski return; 1777d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski } 17785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!size_left && hs_req->req.actual < hs_req->req.length) { 17805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__); 17815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); 17825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else 17835ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); 17845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 17855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 17875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_epint - handle an in/out endpoint interrupt 17885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 17895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @idx: The index for the endpoint (0..15) 17905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @dir_in: Set if this is an IN endpoint 17915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 17925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Process and clear any interrupt pending for an individual endpoint 17938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 17945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx, 17955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in) 17965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 17975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[idx]; 179894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epint_reg = dir_in ? DIEPINT(idx) : DOEPINT(idx); 179994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epctl_reg = dir_in ? DIEPCTL(idx) : DOEPCTL(idx); 180094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsiz_reg = dir_in ? DIEPTSIZ(idx) : DOEPTSIZ(idx); 18015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ints; 18021479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga u32 ctrl; 18035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ints = readl(hsotg->regs + epint_reg); 18051479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga ctrl = readl(hsotg->regs + epctl_reg); 18065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1807a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov /* Clear endpoint interrupts */ 1808a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov writel(ints, hsotg->regs + epint_reg); 1809a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 18105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep%d(%s) DxEPINT=0x%08x\n", 18115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx, dir_in ? "in" : "out", ints); 18125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 181347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_XFERCOMPL) { 18141479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (hs_ep->isochronous && hs_ep->interval == 1) { 181547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ctrl & DXEPCTL_EOFRNUM) 181647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SETEVENFR; 18171479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga else 181847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SETODDFR; 18191479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga writel(ctrl, hsotg->regs + epctl_reg); 18201479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga } 18211479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga 18225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 182347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "%s: XferCompl: DxEPCTL=0x%08x, DXEPTSIZ=%08x\n", 18245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctl_reg), 18255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks readl(hsotg->regs + epsiz_reg)); 18265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we get OutDone from the FIFO, so we only need to look 18298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * at completing IN requests here 18308b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 18315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) { 18325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_in(hsotg, hs_ep); 18335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1834c9a64ea884b8b40d70077ffe1e93081f2190f072Ben Dooks if (idx == 0 && !hs_ep->req) 18355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 18365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else if (using_dma(hsotg)) { 18378b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18388b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * We're using DMA, we need to fire an OutDone here 18398b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * as we ignore the RXFIFO. 18408b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 18415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, idx, false); 18435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 184647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_EPDISBLD) { 18475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: EPDisbld\n", __func__); 18485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18499c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (dir_in) { 18509c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int epctl = readl(hsotg->regs + epctl_reg); 18519c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 1852b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga s3c_hsotg_txfifo_flush(hsotg, hs_ep->fifo_index); 18539c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 185447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((epctl & DXEPCTL_STALL) && 185547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen (epctl & DXEPCTL_EPTYPE_BULK)) { 185694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski int dctl = readl(hsotg->regs + DCTL); 18579c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 185847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dctl |= DCTL_CGNPINNAK; 185994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(dctl, hsotg->regs + DCTL); 18609c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18619c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18629c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18639c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 186447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_AHBERR) 18655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: AHBErr\n", __func__); 18665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 186747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_SETUP) { /* Setup or Timeout */ 18685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: Setup/Timeout\n", __func__); 18695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg) && idx == 0) { 18718b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18728b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * this is the notification we've received a 18735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * setup packet. In non-DMA mode we'd get this 18745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * from the RXFIFO, instead we need to process 18758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the setup here. 18768b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 18775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) 18795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON_ONCE(1); 18805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 18815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, 0, true); 18825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 188547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_BACK2BACKSETUP) 18865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: B2BSetup/INEPNakEff\n", __func__); 18875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18881479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (dir_in && !hs_ep->isochronous) { 18898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* not sure if this is important, but we'll clear it anyway */ 189047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DIEPMSK_INTKNTXFEMPMSK) { 18915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep%d: INTknTXFEmpMsk\n", 18925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx); 18935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* this probably means something bad is happening */ 189647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DIEPMSK_INTKNEPMISMSK) { 18975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: ep%d: INTknEP\n", 18985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx); 18995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 190010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 190110aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks /* FIFO has space or is empty (see GAHBCFG) */ 190210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (hsotg->dedicated_fifos && 190347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ints & DIEPMSK_TXFIFOEMPTY) { 190410aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks dev_dbg(hsotg->dev, "%s: ep%d: TxFIFOEmpty\n", 190510aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks __func__, idx); 190670fa030ffb652ace81dd5bcab01255b49723caecAnton Tikhomirov if (!using_dma(hsotg)) 190770fa030ffb652ace81dd5bcab01255b49723caecAnton Tikhomirov s3c_hsotg_trytx(hsotg, hs_ep); 190810aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks } 19095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 19105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 19115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 19135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq_enumdone - Handle EnumDone interrupt (enumeration done) 19145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 19155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 19165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Handle updating the device settings after the enumeration phase has 19175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * been completed. 19188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg) 19205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 192194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 dsts = readl(hsotg->regs + DSTS); 19229b2667f1f30e91becc3751acd5cffaedcf68e098Jingoo Han int ep0_mps = 0, ep_mps = 8; 19235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * This should signal the finish of the enumeration phase 19265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the USB handshaking, so we should now know what rate 19278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we connected at. 19288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "EnumDone (DSTS=0x%08x)\n", dsts); 19315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19328b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19338b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, since we're limited by the size of transfer on EP0, and 19345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * it seems IN transfers must be a even number of packets we do 19358b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * not advertise a 64byte MPS on EP0. 19368b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* catch both EnumSpd_FS and EnumSpd_FS48 */ 193947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen switch (dsts & DSTS_ENUMSPD_MASK) { 194047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_FS: 194147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_FS48: 19425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_FULL; 19435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0_mps = EP0_MPS_LIMIT; 1944295538ff7e5389d5aee5845c548f114b793d60c9Robert Baldyga ep_mps = 1023; 19455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 19465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 194747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_HS: 19485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_HIGH; 19495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0_mps = EP0_MPS_LIMIT; 1950295538ff7e5389d5aee5845c548f114b793d60c9Robert Baldyga ep_mps = 1024; 19515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 19525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 195347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_LS: 19545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_LOW; 19558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, we don't actually support LS in this driver at the 19575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * moment, and the documentation seems to imply that it isn't 19585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * supported by the PHYs on some of the devices. 19595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 19605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 19615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 1962e538dfdae85244fd2c4231725d82cc1f1bc4942cMichal Nazarewicz dev_info(hsotg->dev, "new device is %s\n", 1963e538dfdae85244fd2c4231725d82cc1f1bc4942cMichal Nazarewicz usb_speed_string(hsotg->gadget.speed)); 19645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19658b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19668b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we should now know the maximum packet size for an 19678b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * endpoint, so set the endpoints to a default value. 19688b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep0_mps) { 19715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int i; 19725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps); 1973b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (i = 1; i < hsotg->num_of_eps; i++) 19745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps); 19755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 19765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* ensure after enumeration our EP0 is active */ 19785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 19805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 198294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 198394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 19845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 19855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 19875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * kill_all_requests - remove all requests from the endpoint's queue 19885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 19895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the requests may be on. 19905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @result: The result code to use. 19915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @force: Force removal of any current requests 19925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 19935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Go through the requests on the given endpoint and mark them 19945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * completed with the given result code. 19955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 19965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void kill_all_requests(struct s3c_hsotg *hsotg, 19975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep, 19985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result, bool force) 19995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 20005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req, *treq; 2001b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga unsigned size; 20025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry_safe(req, treq, &ep->queue, queue) { 20048b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 20058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * currently, we can't do much about an already 20068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * running request on an in endpoint 20078b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 20085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep->req == req && ep->dir_in && !force) 20105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 20115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_request(hsotg, ep, req, 20135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks result); 20145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 2015b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga if (!hsotg->dedicated_fifos) 2016b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga return; 2017b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga size = (readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4; 2018b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga if (size < ep->fifo_size) 2019b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga s3c_hsotg_txfifo_flush(hsotg, ep->fifo_index); 20205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 20235e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * s3c_hsotg_disconnect - disconnect service 20245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 20255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 20265e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * The device has been disconnected. Remove all current 20275e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * transactions and signal the gadget driver that this 20285e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * has happened. 20298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 20305e891342fd0761fed36c187587115e706c0fa358Lukasz Majewskistatic void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg) 20315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 20325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned ep; 20335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2034b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (ep = 0; ep < hsotg->num_of_eps; ep++) 20355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kill_all_requests(hsotg, &hsotg->eps[ep], -ESHUTDOWN, true); 20365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, disconnect); 20385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 20415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq_fifoempty - TX FIFO empty interrupt handler 20425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state: 20435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @periodic: True if this is a periodic FIFO interrupt 20445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 20455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_irq_fifoempty(struct s3c_hsotg *hsotg, bool periodic) 20465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 20475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 20485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epno, ret; 20495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* look through for any more data to transmit */ 20515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2052b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epno = 0; epno < hsotg->num_of_eps; epno++) { 20535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = &hsotg->eps[epno]; 20545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep->dir_in) 20565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 20575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((periodic && !ep->periodic) || 20595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks (!periodic && ep->periodic)) 20605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 20615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_trytx(hsotg, ep); 20635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) 20645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 20655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 20665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* IRQ flags which will trigger a retry around the IRQ loop */ 206947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen#define IRQ_RETRY_MASK (GINTSTS_NPTXFEMP | \ 207047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_PTXFEMP | \ 207147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_RXFLVL) 20725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2074308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * s3c_hsotg_corereset - issue softreset to the core 2075308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * @hsotg: The device state 2076308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * 2077308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * Issue a soft reset to the core, and await the core finishing it. 20788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2079308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewskistatic int s3c_hsotg_corereset(struct s3c_hsotg *hsotg) 2080308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski{ 2081308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski int timeout; 2082308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski u32 grstctl; 2083308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2084308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "resetting core\n"); 2085308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2086308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* issue soft reset */ 208747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_CSFTRST, hsotg->regs + GRSTCTL); 2088308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 20892868fea2d615d9f445a0ccaf988e1418a9787ebeDu, Changbin timeout = 10000; 2090308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski do { 209194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski grstctl = readl(hsotg->regs + GRSTCTL); 209247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen } while ((grstctl & GRSTCTL_CSFTRST) && timeout-- > 0); 2093308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 209447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (grstctl & GRSTCTL_CSFTRST) { 2095308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_err(hsotg->dev, "Failed to get CSftRst asserted\n"); 2096308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return -EINVAL; 2097308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2098308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 20992868fea2d615d9f445a0ccaf988e1418a9787ebeDu, Changbin timeout = 10000; 2100308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2101308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski while (1) { 210294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 grstctl = readl(hsotg->regs + GRSTCTL); 2103308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2104308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (timeout-- < 0) { 2105308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_info(hsotg->dev, 2106308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski "%s: reset failed, GRSTCTL=%08x\n", 2107308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski __func__, grstctl); 2108308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return -ETIMEDOUT; 2109308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2110308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 211147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (!(grstctl & GRSTCTL_AHBIDLE)) 2112308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski continue; 2113308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2114308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski break; /* reset done */ 2115308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2116308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2117308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "reset successful\n"); 2118308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return 0; 2119308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski} 2120308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 21218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 21228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_core_init - issue softreset to the core 21238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The device state 21248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 21258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Issue a soft reset to the core, and await the core finishing it. 21268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2127308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewskistatic void s3c_hsotg_core_init(struct s3c_hsotg *hsotg) 2128308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski{ 2129308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_corereset(hsotg); 2130308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2131308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2132308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * we must now enable ep0 ready for host detection and then 2133308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * set configuration. 2134308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2135308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2136308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* set the PLL on, remove the HNP/SRP and set the PHY */ 213747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(hsotg->phyif | GUSBCFG_TOUTCAL(7) | 213894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski (0x5 << 10), hsotg->regs + GUSBCFG); 2139308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2140308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_init_fifo(hsotg); 2141308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 214247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2143308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 214447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(1 << 18 | DCFG_DEVSPD_HS, hsotg->regs + DCFG); 2145308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2146308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Clear any pending OTG interrupts */ 214794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0xffffffff, hsotg->regs + GOTGINT); 2148308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2149308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Clear any pending interrupts */ 215094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0xffffffff, hsotg->regs + GINTSTS); 2151308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 215247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ERLYSUSP | GINTSTS_SESSREQINT | 215347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_GOUTNAKEFF | GINTSTS_GINNAKEFF | 215447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_CONIDSTSCHNG | GINTSTS_USBRST | 215547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_ENUMDONE | GINTSTS_OTGINT | 215647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_USBSUSP | GINTSTS_WKUPINT, 215747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + GINTMSK); 2158308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2159308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (using_dma(hsotg)) 216047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN | 216147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_HBSTLEN_INCR4, 216294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GAHBCFG); 2163308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski else 216447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(((hsotg->dedicated_fifos) ? (GAHBCFG_NP_TXF_EMP_LVL | 216547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_P_TXF_EMP_LVL) : 0) | 216647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_GLBL_INTR_EN, 21678acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga hsotg->regs + GAHBCFG); 2168308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2169308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 21708acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * If INTknTXFEmpMsk is enabled, it's important to disable ep interrupts 21718acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * when we have no data to transfer. Otherwise we get being flooded by 21728acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * interrupts. 2173308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2174308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 217547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(((hsotg->dedicated_fifos) ? DIEPMSK_TXFIFOEMPTY | 217647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_INTKNTXFEMPMSK : 0) | 217747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK | 217847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | 217947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_INTKNEPMISMSK, 218047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DIEPMSK); 2181308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2182308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2183308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * don't need XferCompl, we get that from RXFIFO in slave mode. In 2184308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * DMA mode we may need this. 2185308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 218647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel((using_dma(hsotg) ? (DIEPMSK_XFERCOMPLMSK | 218747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_TIMEOUTMSK) : 0) | 218847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_EPDISBLDMSK | DOEPMSK_AHBERRMSK | 218947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_SETUPMSK, 219047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DOEPMSK); 2191308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 219294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0, hsotg->regs + DAINTMSK); 2193308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2194308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 219594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 219694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 2197308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2198308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* enable in and out endpoint interrupts */ 219947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_OEPINT | GINTSTS_IEPINT); 2200308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2201308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2202308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * Enable the RXFIFO when in slave mode, as this is how we collect 2203308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * the data. In DMA mode, we get events from the FIFO but also 2204308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * things we cannot process, so do not use it. 2205308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2206308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (!using_dma(hsotg)) 220747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_RXFLVL); 2208308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2209308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Enable interrupts for EP0 in and out */ 2210308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_ctrl_epint(hsotg, 0, 0, 1); 2211308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_ctrl_epint(hsotg, 0, 1, 1); 2212308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 221347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); 2214308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski udelay(10); /* see openiboot */ 221547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __bic32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); 2216308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 221794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_dbg(hsotg->dev, "DCTL=0x%08x\n", readl(hsotg->regs + DCTL)); 2218308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2219308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 222094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski * DxEPCTL_USBActEp says RO in manual, but seems to be set by 2221308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * writing to the EPCTL register.. 2222308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2223308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2224308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* set to read 1 8byte packet */ 222547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | 222647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPTSIZ_XFERSIZE(8), hsotg->regs + DOEPTSIZ0); 2227308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2228308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | 222947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_CNAK | DXEPCTL_EPENA | 223047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_USBACTEP, 223194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DOEPCTL0); 2232308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2233308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* enable, but don't activate EP0in */ 2234308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | 223547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_USBACTEP, hsotg->regs + DIEPCTL0); 2236308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2237308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_enqueue_setup(hsotg); 2238308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2239308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 224094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 224194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 2242308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2243308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* clear global NAKs */ 224447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGOUTNAK | DCTL_CGNPINNAK, 224594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DCTL); 2246308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2247308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* must be at-least 3ms to allow bus to see disconnect */ 2248308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski mdelay(3); 2249308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2250308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* remove the soft-disconnect and let's go */ 225147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __bic32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2252308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski} 2253308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2254308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski/** 22555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq - handle device interrupt 22565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @irq: The IRQ number triggered 22575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @pw: The pw value when registered the handler. 22585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 22595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic irqreturn_t s3c_hsotg_irq(int irq, void *pw) 22605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 22615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = pw; 22625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int retry_count = 8; 22635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 gintsts; 22645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 gintmsk; 22655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22665ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock(&hsotg->lock); 22675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksirq_retry: 226894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski gintsts = readl(hsotg->regs + GINTSTS); 226994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski gintmsk = readl(hsotg->regs + GINTMSK); 22705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %08x %08x (%08x) retry %d\n", 22725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, gintsts, gintsts & gintmsk, gintmsk, retry_count); 22735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks gintsts &= gintmsk; 22755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 227647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_OTGINT) { 227794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 otgint = readl(hsotg->regs + GOTGINT); 22785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "OTGInt: %08x\n", otgint); 22805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 228194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(otgint, hsotg->regs + GOTGINT); 22825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 228447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_SESSREQINT) { 22855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: SessReqInt\n", __func__); 228647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_SESSREQINT, hsotg->regs + GINTSTS); 22875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 228947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_ENUMDONE) { 229047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ENUMDONE, hsotg->regs + GINTSTS); 2291a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2292a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_irq_enumdone(hsotg); 22935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 229547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_CONIDSTSCHNG) { 22965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ConIDStsChg (DSTS=0x%08x, GOTCTL=%08x)\n", 229794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DSTS), 229894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GOTGCTL)); 22995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 230047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_CONIDSTSCHNG, hsotg->regs + GINTSTS); 23015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 230347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & (GINTSTS_OEPINT | GINTSTS_IEPINT)) { 230494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 daint = readl(hsotg->regs + DAINT); 23057e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga u32 daintmsk = readl(hsotg->regs + DAINTMSK); 23067e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga u32 daint_out, daint_in; 23075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep; 23085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23097e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga daint &= daintmsk; 231047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen daint_out = daint >> DAINT_OUTEP_SHIFT; 231147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen daint_in = daint & ~(daint_out << DAINT_OUTEP_SHIFT); 23127e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga 23135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: daint=%08x\n", __func__, daint); 23145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ep = 0; ep < 15 && daint_out; ep++, daint_out >>= 1) { 23165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (daint_out & 1) 23175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_epint(hsotg, ep, 0); 23185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ep = 0; ep < 15 && daint_in; ep++, daint_in >>= 1) { 23215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (daint_in & 1) 23225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_epint(hsotg, ep, 1); 23235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 232647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_USBRST) { 232712a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski 232894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 usb_status = readl(hsotg->regs + GOTGCTL); 232912a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski 23309599815de61db104ad21bc61f5e3544d2415c6eeMarek Szyprowski dev_dbg(hsotg->dev, "%s: USBRst\n", __func__); 23315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "GNPTXSTS=%08x\n", 233294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GNPTXSTS)); 23335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 233447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_USBRST, hsotg->regs + GINTSTS); 2335a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 233694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski if (usb_status & GOTGCTL_BSESVLD) { 233712a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski if (time_after(jiffies, hsotg->last_rst + 233812a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski msecs_to_jiffies(200))) { 23395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 234012a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski kill_all_requests(hsotg, &hsotg->eps[0], 234112a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski -ECONNRESET, true); 23425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 234312a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski s3c_hsotg_core_init(hsotg); 234412a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski hsotg->last_rst = jiffies; 234512a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski } 234612a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski } 23475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* check both FIFOs */ 23505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 235147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_NPTXFEMP) { 23525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "NPTxFEmp\n"); 23535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 23558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Disable the interrupt to stop it happening again 23565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * unless one of these endpoint routines decides that 23578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * it needs re-enabling 23588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 23595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 236047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_disable_gsint(hsotg, GINTSTS_NPTXFEMP); 23615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_irq_fifoempty(hsotg, false); 23625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 236447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_PTXFEMP) { 23655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "PTxFEmp\n"); 23665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 236794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski /* See note in GINTSTS_NPTxFEmp */ 23685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 236947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_disable_gsint(hsotg, GINTSTS_PTXFEMP); 23705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_irq_fifoempty(hsotg, true); 23715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 237347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_RXFLVL) { 23748b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 23758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, since GINTSTS_RxFLvl doubles as FIFO-not-empty, 23765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * we need to retry s3c_hsotg_handle_rx if this is still 23778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set. 23788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 23795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_rx(hsotg); 23815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 238347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_MODEMIS) { 23845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "warning, mode mismatch triggered\n"); 238547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_MODEMIS, hsotg->regs + GINTSTS); 23865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 238847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_USBSUSP) { 238994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_info(hsotg->dev, "GINTSTS_USBSusp\n"); 239047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_USBSUSP, hsotg->regs + GINTSTS); 23915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, suspend); 23935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 239547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_WKUPINT) { 239694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_info(hsotg->dev, "GINTSTS_WkUpIn\n"); 239747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_WKUPINT, hsotg->regs + GINTSTS); 23985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, resume); 24005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 240247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_ERLYSUSP) { 240394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_dbg(hsotg->dev, "GINTSTS_ErlySusp\n"); 240447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ERLYSUSP, hsotg->regs + GINTSTS); 24055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24078b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24088b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * these next two seem to crop-up occasionally causing the core 24095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to shutdown the USB transfer, so try clearing them and logging 24108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the occurrence. 24118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 24125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 241347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_GOUTNAKEFF) { 24145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "GOUTNakEff triggered\n"); 24155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 241647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGOUTNAK, hsotg->regs + DCTL); 2417a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2418a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_dump(hsotg); 24195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 242147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_GINNAKEFF) { 24225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "GINNakEff triggered\n"); 24235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 242447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGNPINNAK, hsotg->regs + DCTL); 2425a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2426a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_dump(hsotg); 24275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24308b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we've had fifo events, we should try and go around the 24318b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * loop again to see if there's any point in returning yet. 24328b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 24335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (gintsts & IRQ_RETRY_MASK && --retry_count > 0) 24355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto irq_retry; 24365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24375ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock(&hsotg->lock); 24385ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 24395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return IRQ_HANDLED; 24405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 24415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 24435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ep_enable - enable the given endpoint 24445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The USB endpint to configure 24455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @desc: The USB endpoint descriptor to configure with. 24465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 24475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is called from the USB gadget code's usb_ep_enable(). 24488b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 24495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_enable(struct usb_ep *ep, 24505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks const struct usb_endpoint_descriptor *desc) 24515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 24525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 24535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 24545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 24555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 24565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 24575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl; 24585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 mps; 24595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in; 2460b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga int i, val, size; 246119c190f9e0fe926db28122a804111a7538dc3498Julia Lawall int ret = 0; 24625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 24645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: ep %s: a 0x%02x, attr 0x%02x, mps 0x%04x, intr %d\n", 24655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, ep->name, desc->bEndpointAddress, desc->bmAttributes, 24665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks desc->wMaxPacketSize, desc->bInterval); 24675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* not to be called for EP0 */ 24695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(index == 0); 24705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0; 24725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in != hs_ep->dir_in) { 24735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: direction mismatch!\n", __func__); 24745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 24755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 247729cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto mps = usb_endpoint_maxp(desc); 24785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* note, we handle this here instead of s3c_hsotg_set_ep_maxpacket */ 24805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 248194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 24825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctrl = readl(hsotg->regs + epctrl_reg); 24835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x from 0x%08x\n", 24855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, epctrl, epctrl_reg); 24865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 248722258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 24885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 248947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl &= ~(DXEPCTL_EPTYPE_MASK | DXEPCTL_MPS_MASK); 249047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_MPS(mps); 24915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * mark the endpoint as active, otherwise the core may ignore 24948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transactions entirely for this endpoint 24958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 249647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_USBACTEP; 24975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24988b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24998b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set the NAK status on the endpoint, otherwise we might try and 25005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * do something with data that we've yet got a request to process 25015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * since the RXFIFO will take data for an endpoint even if the 25025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * size register hasn't been set. 25035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 25045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 250547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SNAK; 25065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* update the endpoint state */ 2508e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga s3c_hsotg_set_ep_maxpacket(hsotg, hs_ep->index, mps); 25095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* default, set to non-periodic */ 25111479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->isochronous = 0; 25125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->periodic = 0; 2513a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga hs_ep->halted = 0; 25141479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->interval = desc->bInterval; 25155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25164fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->interval > 1 && hs_ep->mc > 1) 25174fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_err(hsotg->dev, "MC > 1 when interval is not 1\n"); 25184fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 25195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { 25205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_ISOC: 252147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_ISO; 252247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SETEVENFR; 25231479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->isochronous = 1; 25241479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (dir_in) 25251479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->periodic = 1; 25261479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga break; 25275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_BULK: 252947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_BULK; 25305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 25315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_INT: 2533b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga if (dir_in) 25345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->periodic = 1; 25355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 253647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_INTERRUPT; 25375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 25385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_CONTROL: 254047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_CONTROL; 25415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 25425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25448b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 25458b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if the hardware has dedicated fifos, we must give each IN EP 254610aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks * a unique tx-fifo even if it is non-periodic. 254710aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks */ 2548b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga if (dir_in && hsotg->dedicated_fifos) { 2549b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga size = hs_ep->ep.maxpacket*hs_ep->mc; 2550b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga for (i = 1; i <= 8; ++i) { 2551b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga if (hsotg->fifo_map & (1<<i)) 2552b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga continue; 2553b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga val = readl(hsotg->regs + DPTXFSIZN(i)); 2554b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga val = (val >> FIFOSIZE_DEPTH_SHIFT)*4; 2555b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga if (val < size) 2556b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga continue; 2557b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga hsotg->fifo_map |= 1<<i; 2558b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga 2559b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga epctrl |= DXEPCTL_TXFNUM(i); 2560b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga hs_ep->fifo_index = i; 2561b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga hs_ep->fifo_size = val; 2562b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga break; 2563b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga } 2564b585a48b8a9486f26a68886278f2c8f981676dd4Sudip Mukherjee if (i == 8) { 2565b585a48b8a9486f26a68886278f2c8f981676dd4Sudip Mukherjee ret = -ENOMEM; 2566b585a48b8a9486f26a68886278f2c8f981676dd4Sudip Mukherjee goto error; 2567b585a48b8a9486f26a68886278f2c8f981676dd4Sudip Mukherjee } 2568b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga } 256910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 25705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* for non control endpoints, set PID to D0 */ 25715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index) 257247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SETD0PID; 25735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: write DxEPCTL=0x%08x\n", 25755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, epctrl); 25765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctrl, hsotg->regs + epctrl_reg); 25785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x\n", 25795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg)); 25805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* enable the endpoint interrupt */ 25825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1); 25835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2584b585a48b8a9486f26a68886278f2c8f981676dd4Sudip Mukherjeeerror: 258522258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 258619c190f9e0fe926db28122a804111a7538dc3498Julia Lawall return ret; 25875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 25885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 25908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_disable - disable given endpoint 25918b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to disable. 25928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 25935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_disable(struct usb_ep *ep) 25945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 25955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 25965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 25975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in = hs_ep->dir_in; 25985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 25995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 26005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 26015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 26025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26031e01129373f757925a652ea4ea5b278f8c2b9222Marek Szyprowski dev_dbg(hsotg->dev, "%s(ep %p)\n", __func__, ep); 26045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep == &hsotg->eps[0].ep) { 26065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: called for ep0\n", __func__); 26075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 26085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 26095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 261094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 26115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26125ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 26135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* terminate all requests with shutdown */ 26145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, false); 26155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2616b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga hsotg->fifo_map &= ~(1<<hs_ep->fifo_index); 2617b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga hs_ep->fifo_index = 0; 2618b203d0a2e32dd28e87780078f0789322862e4da8Robert Baldyga hs_ep->fifo_size = 0; 26195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl = readl(hsotg->regs + epctrl_reg); 262147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl &= ~DXEPCTL_EPENA; 262247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl &= ~DXEPCTL_USBACTEP; 262347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SNAK; 26245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); 26265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ctrl, hsotg->regs + epctrl_reg); 26275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* disable endpoint interrupts */ 26295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0); 26305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 263122258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 26325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 26335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 26345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 26365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on_list - check request is on the given endpoint 26375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint to check. 26385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @test: The request to test if it is on the endpoint. 26398b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic bool on_list(struct s3c_hsotg_ep *ep, struct s3c_hsotg_req *test) 26415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req, *treq; 26435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry_safe(req, treq, &ep->queue, queue) { 26455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req == test) 26465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return true; 26475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 26485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return false; 26505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 26515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 26538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_dequeue - dequeue given endpoint 26548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to dequeue. 26558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @req: The request to be removed from a queue. 26568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) 26585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 26605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 26615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 26625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 26635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26641e01129373f757925a652ea4ea5b278f8c2b9222Marek Szyprowski dev_dbg(hs->dev, "ep_dequeue(%p,%p)\n", ep, req); 26655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 266622258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hs->lock, flags); 26675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!on_list(hs_ep, hs_req)) { 266922258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 26705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 26715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 26725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_request(hs, hs_ep, hs_req, -ECONNRESET); 267422258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 26755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 26775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 26785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 26808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_sethalt - set halt on a given endpoint 26818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to set halt. 26828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @value: Set or unset the halt. 26838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value) 26855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 26875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 26885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 26895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epreg; 26905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctl; 26919c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov u32 xfertype; 26925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value); 26945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2695c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (index == 0) { 2696c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (value) 2697c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_stall_ep0(hs); 2698c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga else 2699c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_warn(hs->dev, 2700c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga "%s: can't clear halt on ep0\n", __func__); 2701c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga return 0; 2702c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga } 2703c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 27045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* write both IN and OUT control registers */ 27055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 270694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epreg = DIEPCTL(index); 27075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctl = readl(hs->regs + epreg); 27085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27099c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (value) { 271047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_STALL + DXEPCTL_SNAK; 271147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (epctl & DXEPCTL_EPENA) 271247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_EPDIS; 27139c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } else { 271447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl &= ~DXEPCTL_STALL; 271547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype = epctl & DXEPCTL_EPTYPE_MASK; 271647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (xfertype == DXEPCTL_EPTYPE_BULK || 271747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype == DXEPCTL_EPTYPE_INTERRUPT) 271847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_SETD0PID; 27199c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 27205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctl, hs->regs + epreg); 27225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 272394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epreg = DOEPCTL(index); 27245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctl = readl(hs->regs + epreg); 27255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (value) 272747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_STALL; 27289c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov else { 272947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl &= ~DXEPCTL_STALL; 273047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype = epctl & DXEPCTL_EPTYPE_MASK; 273147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (xfertype == DXEPCTL_EPTYPE_BULK || 273247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype == DXEPCTL_EPTYPE_INTERRUPT) 273347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_SETD0PID; 27349c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 27355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctl, hs->regs + epreg); 27375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2738a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga hs_ep->halted = value; 2739a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga 27405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 27415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 27425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27435ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski/** 27445ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * s3c_hsotg_ep_sethalt_lock - set halt on a given endpoint with lock held 27455ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * @ep: The endpoint to set halt. 27465ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * @value: Set or unset the halt. 27475ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski */ 27485ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewskistatic int s3c_hsotg_ep_sethalt_lock(struct usb_ep *ep, int value) 27495ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski{ 27505ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg_ep *hs_ep = our_ep(ep); 27515ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg *hs = hs_ep->parent; 27525ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski unsigned long flags = 0; 27535ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski int ret = 0; 27545ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 27555ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hs->lock, flags); 27565ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski ret = s3c_hsotg_ep_sethalt(ep, value); 27575ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 27585ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 27595ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski return ret; 27605ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski} 27615ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 27625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct usb_ep_ops s3c_hsotg_ep_ops = { 27635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .enable = s3c_hsotg_ep_enable, 27645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .disable = s3c_hsotg_ep_disable, 27655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .alloc_request = s3c_hsotg_ep_alloc_request, 27665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .free_request = s3c_hsotg_ep_free_request, 27675ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski .queue = s3c_hsotg_ep_queue_lock, 27685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .dequeue = s3c_hsotg_ep_dequeue, 27695ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski .set_halt = s3c_hsotg_ep_sethalt_lock, 277025985edcedea6396277003854657b5f3cb31a628Lucas De Marchi /* note, don't believe we have any call for the fifo routines */ 27715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 27725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 27744118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * s3c_hsotg_phy_enable - enable platform phy dev 27758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 27764118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * 27774118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * A wrapper for platform code responsible for controlling 27784118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * low-level USB code 27794118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski */ 27804118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewskistatic void s3c_hsotg_phy_enable(struct s3c_hsotg *hsotg) 27814118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski{ 27824118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski struct platform_device *pdev = to_platform_device(hsotg->dev); 27834118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 27844118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski dev_dbg(hsotg->dev, "pdev 0x%p\n", pdev); 2785b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri 2786ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski if (hsotg->uphy) 278774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter usb_phy_init(hsotg->uphy); 2788ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski else if (hsotg->plat && hsotg->plat->phy_init) 27894118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski hsotg->plat->phy_init(pdev, hsotg->plat->phy_type); 2790ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski else { 2791ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski phy_init(hsotg->phy); 2792ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski phy_power_on(hsotg->phy); 2793ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski } 27944118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski} 27954118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 27964118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski/** 27974118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * s3c_hsotg_phy_disable - disable platform phy dev 27988b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 27994118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * 28004118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * A wrapper for platform code responsible for controlling 28014118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * low-level USB code 28024118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski */ 28034118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewskistatic void s3c_hsotg_phy_disable(struct s3c_hsotg *hsotg) 28044118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski{ 28054118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski struct platform_device *pdev = to_platform_device(hsotg->dev); 28064118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 2807ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski if (hsotg->uphy) 280874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter usb_phy_shutdown(hsotg->uphy); 2809ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski else if (hsotg->plat && hsotg->plat->phy_exit) 28104118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type); 2811ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski else { 2812ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski phy_power_off(hsotg->phy); 2813ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski phy_exit(hsotg->phy); 2814ca2c5ba80f823a38c4aae506e2f03c1afb076b0aKamil Debski } 28154118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski} 28164118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 28178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 28188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_init - initalize the usb core 28198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 28208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2821b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewskistatic void s3c_hsotg_init(struct s3c_hsotg *hsotg) 2822b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski{ 2823b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* unmask subset of endpoint interrupts */ 2824b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 282547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | 282647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK, 282747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DIEPMSK); 2828b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 282947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DOEPMSK_SETUPMSK | DOEPMSK_AHBERRMSK | 283047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_EPDISBLDMSK | DOEPMSK_XFERCOMPLMSK, 283147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DOEPMSK); 2832b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 283394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0, hsotg->regs + DAINTMSK); 2834b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2835b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* Be in disconnected state until gadget is registered */ 283647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2837b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2838b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (0) { 2839b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* post global nak until we're ready */ 284047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_SGNPINNAK | DCTL_SGOUTNAK, 284194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DCTL); 2842b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 2843b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2844b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* setup fifos */ 2845b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2846b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_dbg(hsotg->dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", 284794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GRXFSIZ), 284894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GNPTXFSIZ)); 2849b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2850b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski s3c_hsotg_init_fifo(hsotg); 2851b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2852b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* set the PLL on, remove the HNP/SRP and set the PHY */ 285347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GUSBCFG_PHYIF16 | GUSBCFG_TOUTCAL(7) | (0x5 << 10), 285494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GUSBCFG); 2855b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 285647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(using_dma(hsotg) ? GAHBCFG_DMA_EN : 0x0, 285794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GAHBCFG); 2858b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski} 2859b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 28608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 28618b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_udc_start - prepare the udc for work 28628b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 28638b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @driver: The usb gadget driver 28648b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 28658b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Perform initialization to prepare udc device and driver 28668b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * to work. 28678b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2868f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewskistatic int s3c_hsotg_udc_start(struct usb_gadget *gadget, 2869f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski struct usb_gadget_driver *driver) 28705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2871f99b2bfebe8984db2b6e4c07e2bedc91977d27d8Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 28725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 28735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hsotg) { 2875a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek pr_err("%s: called with no device\n", __func__); 28765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENODEV; 28775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!driver) { 28805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: no driver\n", __func__); 28815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 28825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28847177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (driver->max_speed < USB_SPEED_FULL) 28855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: bad speed\n", __func__); 28865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2887f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (!driver->setup) { 28885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: missing entry points\n", __func__); 28895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 28905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(hsotg->driver); 28935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks driver->driver.bus = NULL; 28955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->driver = driver; 28967d7b22928b900bcb0f8885a95846e5125a757e76Alexandre Pereira da Silva hsotg->gadget.dev.of_node = hsotg->dev->of_node; 28975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_UNKNOWN; 28985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2899d00b41428042e72d9dc2557d9147434a4e3d631fRobert Baldyga clk_enable(hsotg->clk); 2900d00b41428042e72d9dc2557d9147434a4e3d631fRobert Baldyga 2901f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 2902f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski hsotg->supplies); 29035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 2904f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski dev_err(hsotg->dev, "failed to enable supplies: %d\n", ret); 29055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto err; 29065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 29075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 290812a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski hsotg->last_rst = jiffies; 29095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); 29105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 29115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dookserr: 29135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->driver = NULL; 29145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 29155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 29165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 29188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_udc_stop - stop the udc 29198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 29208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @driver: The usb gadget driver 29218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 29228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Stop udc hw block and stay tunned for future transmissions 29238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2924f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewskistatic int s3c_hsotg_udc_stop(struct usb_gadget *gadget, 2925f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski struct usb_gadget_driver *driver) 29265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2927f99b2bfebe8984db2b6e4c07e2bedc91977d27d8Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 29282b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski unsigned long flags = 0; 29295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep; 29305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hsotg) 29325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENODEV; 29335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* all endpoints should be shutdown */ 2935604eac3c0c69e98f2fd0133305f9e777418f1d3bRobert Baldyga for (ep = 1; ep < hsotg->num_of_eps; ep++) 29365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); 29375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29382b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 29392b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski 294032805c350bad16e7d4debe55820d2e79dca89fb6Marek Szyprowski hsotg->driver = NULL; 29415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_UNKNOWN; 29425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29432b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 29442b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski 2945c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); 29465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2947d00b41428042e72d9dc2557d9147434a4e3d631fRobert Baldyga clk_disable(hsotg->clk); 2948d00b41428042e72d9dc2557d9147434a4e3d631fRobert Baldyga 29495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 29505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 29515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 29538b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_gadget_getframe - read the frame number 29548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 29558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 29568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Read the {micro} frame number 29578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 29585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget) 29595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 29605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return s3c_hsotg_read_frameno(to_hsotg(gadget)); 29615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 29625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2963a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski/** 2964a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * s3c_hsotg_pullup - connect/disconnect the USB PHY 2965a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * @gadget: The usb gadget state 2966a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * @is_on: Current state of the USB PHY 2967a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * 2968a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * Connect/Disconnect the USB PHY pullup 2969a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski */ 2970a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewskistatic int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) 2971a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski{ 2972a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 2973a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski unsigned long flags = 0; 2974a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2975d784f1e50977e58db23a79181971c3c0f62452e5Andrzej Pietrasiewicz dev_dbg(hsotg->dev, "%s: is_on: %d\n", __func__, is_on); 2976a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2977a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 2978a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski if (is_on) { 2979a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_phy_enable(hsotg); 2980d00b41428042e72d9dc2557d9147434a4e3d631fRobert Baldyga clk_enable(hsotg->clk); 2981a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_core_init(hsotg); 2982a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski } else { 2983d00b41428042e72d9dc2557d9147434a4e3d631fRobert Baldyga clk_disable(hsotg->clk); 2984a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 2985a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski } 2986a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2987a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski hsotg->gadget.speed = USB_SPEED_UNKNOWN; 2988a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 2989a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2990a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski return 0; 2991a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski} 2992a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2993eeef45876631a446eaedce16675f4ff344e16cf0Felipe Balbistatic const struct usb_gadget_ops s3c_hsotg_gadget_ops = { 29945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .get_frame = s3c_hsotg_gadget_getframe, 2995f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski .udc_start = s3c_hsotg_udc_start, 2996f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski .udc_stop = s3c_hsotg_udc_stop, 2997a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski .pullup = s3c_hsotg_pullup, 29985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 29995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 30015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_initep - initialise a single endpoint 30025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 30035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to be initialised. 30045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @epnum: The endpoint number 30055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 30065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Initialise the given endpoint (as part of the probe and device state 30075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * creation) to give to the gadget driver. Setup the endpoint name, any 30085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * direction information and other state that may be required. 30095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 301041ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic void s3c_hsotg_initep(struct s3c_hsotg *hsotg, 30115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 30125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum) 30135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 30145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks char *dir; 30155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum == 0) 30175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = ""; 30185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else if ((epnum % 2) == 0) { 30195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = "out"; 30205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 30215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = "in"; 30225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->dir_in = 1; 30235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->index = epnum; 30265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks snprintf(hs_ep->name, sizeof(hs_ep->name), "ep%d%s", epnum, dir); 30285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_ep->queue); 30305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_ep->ep.ep_list); 30315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* add to the list of endpoints known by the gadget driver */ 30335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum) 30345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_add_tail(&hs_ep->ep.ep_list, &hsotg->gadget.ep_list); 30355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->parent = hsotg; 30375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->ep.name = hs_ep->name; 3038e117e742d310683b410951faeab4b13b6c3c609fRobert Baldyga usb_ep_set_maxpacket_limit(&hs_ep->ep, epnum ? 1024 : EP0_MPS_LIMIT); 30395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->ep.ops = &s3c_hsotg_ep_ops; 30405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30418b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 30428b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we're using dma, we need to set the next-endpoint pointer 30435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to be something valid. 30445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 30455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) { 304747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen u32 next = DXEPCTL_NEXTEP((epnum + 1) % 15); 304894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(next, hsotg->regs + DIEPCTL(epnum)); 304994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(next, hsotg->regs + DOEPCTL(epnum)); 30505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 30525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3053b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski/** 3054b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * s3c_hsotg_hw_cfg - read HW configuration registers 3055b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * @param: The device state 3056b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * 3057b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * Read the USB core HW configuration registers 3058b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski */ 3059b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewskistatic void s3c_hsotg_hw_cfg(struct s3c_hsotg *hsotg) 30605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3061cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski u32 cfg2, cfg3, cfg4; 3062b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* check hardware configuration */ 30635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3064b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski cfg2 = readl(hsotg->regs + 0x48); 3065b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->num_of_eps = (cfg2 >> 10) & 0xF; 306610aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 3067cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski cfg3 = readl(hsotg->regs + 0x4C); 3068cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski hsotg->fifo_mem = (cfg3 >> 16); 306910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 307010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks cfg4 = readl(hsotg->regs + 0x50); 307110aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks hsotg->dedicated_fifos = (cfg4 >> 25) & 1; 307210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 3073cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski dev_info(hsotg->dev, "EPs: %d, %s fifos, %d entries in SPRAM\n", 3074cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski hsotg->num_of_eps, 3075cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski hsotg->dedicated_fifos ? "dedicated" : "shared", 3076cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski hsotg->fifo_mem); 30775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 30785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 30808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_dump - dump state of the udc 30818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @param: The device state 30828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 30835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_dump(struct s3c_hsotg *hsotg) 30845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 308583a018045659ee2cc9b1390ddb8b2a247d269bc4Mark Brown#ifdef DEBUG 30865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct device *dev = hsotg->dev; 30875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 30885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 val; 30895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 30905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DCFG=0x%08x, DCTL=0x%08x, DIEPMSK=%08x\n", 309294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCFG), readl(regs + DCTL), 309394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPMSK)); 30945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "GAHBCFG=0x%08x, 0x44=0x%08x\n", 309694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GAHBCFG), readl(regs + 0x44)); 30975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", 309994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GRXFSIZ), readl(regs + GNPTXFSIZ)); 31005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* show periodic fifo settings */ 31025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 1; idx <= 15; idx++) { 310447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val = readl(regs + DPTXFSIZN(idx)); 31055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DPTx[%d] FSize=%d, StAddr=0x%08x\n", idx, 310647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 310747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_STARTADDR_MASK); 31085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 31095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 0; idx < 15; idx++) { 31115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, 31125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "ep%d-in: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", idx, 311394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPCTL(idx)), 311494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPTSIZ(idx)), 311594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPDMA(idx))); 31165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 311794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(regs + DOEPCTL(idx)); 31185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, 31195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "ep%d-out: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", 312094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski idx, readl(regs + DOEPCTL(idx)), 312194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPTSIZ(idx)), 312294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPDMA(idx))); 31235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 31255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DVBUSDIS=0x%08x, DVBUSPULSE=%08x\n", 312794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DVBUSDIS), readl(regs + DVBUSPULSE)); 312883a018045659ee2cc9b1390ddb8b2a247d269bc4Mark Brown#endif 31295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 31305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 31325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * state_show - debugfs: show overall driver and device state. 31335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq file to write to. 31345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 31355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 31365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This debugfs entry shows the overall state of the hardware and 31375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * some general information about each of the endpoints available 31385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to the system. 31395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 31405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int state_show(struct seq_file *seq, void *v) 31415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = seq->private; 31435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 31445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 31455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n", 314794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCFG), 314894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCTL), 314994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DSTS)); 31505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n", 315294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPMSK), readl(regs + DOEPMSK)); 31535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n", 315594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GINTMSK), 315694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GINTSTS)); 31575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n", 315994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DAINTMSK), 316094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DAINT)); 31615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n", 316394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GNPTXSTS), 316494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GRXSTSR)); 31655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3166a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\nEndpoint status:\n"); 31675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 0; idx < 15; idx++) { 31695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 in, out; 31705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 317194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski in = readl(regs + DIEPCTL(idx)); 317294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski out = readl(regs + DOEPCTL(idx)); 31735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x", 31755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks idx, in, out); 31765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 317794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski in = readl(regs + DIEPTSIZ(idx)); 317894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski out = readl(regs + DOEPTSIZ(idx)); 31795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x", 31815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks in, out); 31825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3183a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\n"); 31845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 31855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 31875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 31885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int state_open(struct inode *inode, struct file *file) 31905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, state_show, inode->i_private); 31925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 31935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations state_fops = { 31955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 31965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = state_open, 31975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 31985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 31995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 32005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 32015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 32035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * fifo_show - debugfs: show the fifo information 32045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq_file to write data to. 32055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 32065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 32075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Show the FIFO information for the overall fifo and all the 32085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * periodic transmission FIFOs. 32098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 32105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int fifo_show(struct seq_file *seq, void *v) 32115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = seq->private; 32135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 32145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 val; 32155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 32165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3217a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "Non-periodic FIFOs:\n"); 321894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski seq_printf(seq, "RXFIFO: Size %d\n", readl(regs + GRXFSIZ)); 32195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 322094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(regs + GNPTXFSIZ); 32215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n", 322247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 322347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_DEPTH_MASK); 32245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3225a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\nPeriodic TXFIFOs:\n"); 32265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 1; idx <= 15; idx++) { 322847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val = readl(regs + DPTXFSIZN(idx)); 32295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, 323147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 323247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_STARTADDR_MASK); 32335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 32365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int fifo_open(struct inode *inode, struct file *file) 32395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, fifo_show, inode->i_private); 32415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations fifo_fops = { 32445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 32455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = fifo_open, 32465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 32475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 32485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 32495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 32505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const char *decode_direction(int is_in) 32535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return is_in ? "in" : "out"; 32555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 32585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * ep_show - debugfs: show the state of an endpoint. 32595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq_file to write data to. 32605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 32615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 32625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This debugfs entry shows the state of the given endpoint (one is 32635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * registered for each available). 32648b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 32655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int ep_show(struct seq_file *seq, void *v) 32665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = seq->private; 32685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = ep->parent; 32695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req; 32705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 32715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = ep->index; 32725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int show_limit = 15; 32735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 32745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n", 32765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->index, ep->ep.name, decode_direction(ep->dir_in)); 32775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* first show the register state */ 32795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n", 328194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPCTL(index)), 328294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPCTL(index))); 32835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n", 328594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPDMA(index)), 328694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPDMA(index))); 32875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n", 328994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPINT(index)), 329094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPINT(index))); 32915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n", 329394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPTSIZ(index)), 329494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPTSIZ(index))); 32955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3296a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\n"); 32975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "mps %d\n", ep->ep.maxpacket); 32985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "total_data=%ld\n", ep->total_data); 32995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "request list (%p,%p):\n", 33015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->queue.next, ep->queue.prev); 33025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 330322258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 33045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry(req, &ep->queue, queue) { 33065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (--show_limit < 0) { 3307a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "not showing more requests...\n"); 33085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 33095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "%c req %p: %d bytes @%p, ", 33125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req == ep->req ? '*' : ' ', 33135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req, req->req.length, req->req.buf); 33145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "%d done, res %d\n", 33155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->req.actual, req->req.status); 33165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 331822258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 33195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 33215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int ep_open(struct inode *inode, struct file *file) 33245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, ep_show, inode->i_private); 33265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations ep_fops = { 33295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 33305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = ep_open, 33315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 33325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 33335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 33345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 33355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 33375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_create_debug - create debugfs directory and files 33385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 33395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 33405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Create the debugfs files to allow the user to get information 33415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * about the state of the system. The directory name is created 33425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * with the same name as the device itself, in case we end up 33435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * with multiple blocks in future systems. 33448b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 334541ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic void s3c_hsotg_create_debug(struct s3c_hsotg *hsotg) 33465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct dentry *root; 33485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned epidx; 33495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks root = debugfs_create_dir(dev_name(hsotg->dev), NULL); 33515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_root = root; 33525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(root)) { 33535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "cannot create debug root\n"); 33545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 33555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* create general state file */ 33585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_file = debugfs_create_file("state", 0444, root, 33605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg, &state_fops); 33615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(hsotg->debug_file)) 33635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to create state\n", __func__); 33645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_fifo = debugfs_create_file("fifo", 0444, root, 33665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg, &fifo_fops); 33675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(hsotg->debug_fifo)) 33695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__); 33705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* create one file for each endpoint */ 33725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3373b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 33745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; 33755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->debugfs = debugfs_create_file(ep->name, 0444, 33775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks root, ep, &ep_fops); 33785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(ep->debugfs)) 33805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "failed to create %s debug file\n", 33815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->name); 33825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 33865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_delete_debug - cleanup debugfs entries 33875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 33885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 33895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Cleanup (remove) the debugfs files for use on module exit. 33908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3391fb4e98ab63433c4d3a1588ea91c73f1cd7ebaa00Bill Pembertonstatic void s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg) 33925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned epidx; 33945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3395b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 33965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; 33975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(ep->debugfs); 33985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_file); 34015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_fifo); 34025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_root); 34035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 34045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 34068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_probe - probe function for hsotg driver 34078b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @pdev: The platform information for the driver 34088b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3409f026a52d4309e1e08752a8bd41ac74aeea815686Lukasz Majewski 341041ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic int s3c_hsotg_probe(struct platform_device *pdev) 34115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3412e01ee9f509a927158f670408b41127d4166db1c7Jingoo Han struct s3c_hsotg_plat *plat = dev_get_platdata(&pdev->dev); 341374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct phy *phy; 341474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct usb_phy *uphy; 34155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct device *dev = &pdev->dev; 3416b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski struct s3c_hsotg_ep *eps; 34175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg; 34185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct resource *res; 34195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum; 34205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 3421fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski int i; 34225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3423338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat hsotg = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsotg), GFP_KERNEL); 3424d04477d84be0bcac96452bdb824ff6eec4b49c96Jingoo Han if (!hsotg) 34255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOMEM; 34265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34271b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski /* Set default UTMI width */ 34281b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski hsotg->phyif = GUSBCFG_PHYIF16; 34291b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski 343074084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter /* 343174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter * Attempt to find a generic PHY, then look for an old style 343274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter * USB PHY, finally fall back to pdata 343374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter */ 343474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy = devm_phy_get(&pdev->dev, "usb2-phy"); 3435f4f5ba5e7d9e087f044fe87f5a5421761274aa48Felipe Balbi if (IS_ERR(phy)) { 343674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter uphy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); 343774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (IS_ERR(uphy)) { 343874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter /* Fallback for pdata */ 343974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter plat = dev_get_platdata(&pdev->dev); 344074084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (!plat) { 344174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter dev_err(&pdev->dev, 344274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter "no platform data or transceiver defined\n"); 344374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter return -EPROBE_DEFER; 344474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } 3445b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri hsotg->plat = plat; 344674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else 344774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter hsotg->uphy = uphy; 34481b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski } else { 3449b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri hsotg->phy = phy; 34501b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski /* 34511b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski * If using the generic PHY framework, check if the PHY bus 34521b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski * width is 8-bit and set the phyif appropriately. 34531b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski */ 34541b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski if (phy_get_bus_width(phy) == 8) 34551b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski hsotg->phyif = GUSBCFG_PHYIF8; 34561b59fc7e3cda3f626204cadda8bb9b7d15f4f55bKamil Debski } 3457b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri 34585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->dev = dev; 34595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 346084749c6dcb694a7aa793221ea8cc3d70bd46d466Sachin Kamat hsotg->clk = devm_clk_get(&pdev->dev, "otg"); 346131ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski if (IS_ERR(hsotg->clk)) { 346231ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski dev_err(dev, "cannot get otg clock\n"); 3463338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat return PTR_ERR(hsotg->clk); 346431ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski } 346531ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 34665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks platform_set_drvdata(pdev, hsotg); 34675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 34695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3470148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding hsotg->regs = devm_ioremap_resource(&pdev->dev, res); 3471148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding if (IS_ERR(hsotg->regs)) { 3472148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding ret = PTR_ERR(hsotg->regs); 3473338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 34745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = platform_get_irq(pdev, 0); 34775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 34785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(dev, "cannot find IRQ\n"); 3479338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 34805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 348222258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_init(&hsotg->lock); 348322258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski 34845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->irq = ret; 34855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "regs %p, irq %d\n", hsotg->regs, hsotg->irq); 34875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3488d327ab5b6d660d6fe22b073b743fde1668e593bbMichal Nazarewicz hsotg->gadget.max_speed = USB_SPEED_HIGH; 34895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.ops = &s3c_hsotg_gadget_ops; 34905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.name = dev_name(dev); 34915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* reset the system */ 34935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 349404b4a0fce530eab728e27e24b5a8d6192c6f70d9Lukasz Majewski clk_prepare_enable(hsotg->clk); 349531ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 3496fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski /* regulators */ 3497fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3498fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski for (i = 0; i < ARRAY_SIZE(hsotg->supplies); i++) 3499fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies[i].supply = s3c_hsotg_supply_names[i]; 3500fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3501cd76213eb57c505d3df6fa3134a6b3bb5394a90cSachin Kamat ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(hsotg->supplies), 3502fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies); 3503fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski if (ret) { 3504fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski dev_err(dev, "failed to request supplies: %d\n", ret); 3505338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 3506fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski } 3507fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3508fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 3509fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies); 3510fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3511fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski if (ret) { 3512fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski dev_err(hsotg->dev, "failed to enable supplies: %d\n", ret); 3513fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski goto err_supplies; 3514fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski } 3515fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 35164118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski /* usb phy enable */ 35174118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_enable(hsotg); 35185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_corereset(hsotg); 3520b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski s3c_hsotg_hw_cfg(hsotg); 3521cff9eb756e18a7763d7ab9c574c0ab191e712341Marek Szyprowski s3c_hsotg_init(hsotg); 3522b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3523eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski ret = devm_request_irq(&pdev->dev, hsotg->irq, s3c_hsotg_irq, 0, 3524eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski dev_name(dev), hsotg); 3525eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski if (ret < 0) { 3526eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski s3c_hsotg_phy_disable(hsotg); 3527eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski clk_disable_unprepare(hsotg->clk); 3528eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), 3529eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski hsotg->supplies); 3530eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski dev_err(dev, "cannot claim IRQ\n"); 3531eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski goto err_clk; 3532eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski } 3533eb3c56c5ccdd252940cb0ec0541fcdc94894bd8dMarek Szyprowski 3534b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* hsotg->num_of_eps holds number of EPs other than ep0 */ 3535b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3536b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (hsotg->num_of_eps == 0) { 3537b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_err(dev, "wrong number of EPs (zero)\n"); 3538dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -EINVAL; 3539b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_supplies; 3540b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 3541b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3542b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski eps = kcalloc(hsotg->num_of_eps + 1, sizeof(struct s3c_hsotg_ep), 3543b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski GFP_KERNEL); 3544b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (!eps) { 3545dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -ENOMEM; 3546b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_supplies; 3547b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 3548b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3549b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->eps = eps; 3550b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3551b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* setup endpoint information */ 3552b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3553b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski INIT_LIST_HEAD(&hsotg->gadget.ep_list); 3554b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->gadget.ep0 = &hsotg->eps[0].ep; 3555b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3556b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* allocate EP0 request */ 3557b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3558b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps[0].ep, 3559b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski GFP_KERNEL); 3560b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (!hsotg->ctrl_req) { 3561b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_err(dev, "failed to allocate ctrl req\n"); 3562dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -ENOMEM; 3563b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_ep_mem; 3564b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 35655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* initialise the endpoints now the core has been initialised */ 3567b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epnum = 0; epnum < hsotg->num_of_eps; epnum++) 35685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_initep(hsotg, &hsotg->eps[epnum], epnum); 35695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3570f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski /* disable power and clock */ 35713a8146aafcedd93e42045598802e1eb71cae68c0Marek Szyprowski s3c_hsotg_phy_disable(hsotg); 3572f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 3573f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), 3574f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski hsotg->supplies); 3575f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (ret) { 3576f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski dev_err(hsotg->dev, "failed to disable supplies: %d\n", ret); 3577f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski goto err_ep_mem; 3578f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski } 3579f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 35800f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior ret = usb_add_gadget_udc(&pdev->dev, &hsotg->gadget); 35810f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior if (ret) 3582b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_ep_mem; 35830f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 35845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_create_debug(hsotg); 35855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_dump(hsotg); 35875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 35895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35901d144c6732f6badd4be7a1383a4ae2adcc3f9386Lukasz Majewskierr_ep_mem: 3591b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski kfree(eps); 3592fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewskierr_supplies: 35934118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 359431ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowskierr_clk: 35951d144c6732f6badd4be7a1383a4ae2adcc3f9386Lukasz Majewski clk_disable_unprepare(hsotg->clk); 3596338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat 35975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 35985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 35995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36008b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 36018b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_remove - remove function for hsotg driver 36028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @pdev: The platform information for the driver 36038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3604fb4e98ab63433c4d3a1588ea91c73f1cd7ebaa00Bill Pembertonstatic int s3c_hsotg_remove(struct platform_device *pdev) 36055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 36065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 36075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36080f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&hsotg->gadget); 36090f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 36105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_delete_debug(hsotg); 36115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3612f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (hsotg->driver) { 3613f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski /* should have been done already by driver model core */ 3614f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski usb_gadget_unregister_driver(hsotg->driver); 3615f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski } 36165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 361704b4a0fce530eab728e27e24b5a8d6192c6f70d9Lukasz Majewski clk_disable_unprepare(hsotg->clk); 361831ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 36195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 36205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 36215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3622b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowskistatic int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state) 3623b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski{ 3624b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 3625b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski unsigned long flags; 3626b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ret = 0; 3627b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3628b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) 3629b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski dev_info(hsotg->dev, "suspending usb gadget %s\n", 3630b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->driver->driver.name); 3631b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3632b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_lock_irqsave(&hsotg->lock, flags); 3633b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_disconnect(hsotg); 3634b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_phy_disable(hsotg); 3635b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->gadget.speed = USB_SPEED_UNKNOWN; 3636b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_unlock_irqrestore(&hsotg->lock, flags); 3637b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3638b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) { 3639b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ep; 3640b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski for (ep = 0; ep < hsotg->num_of_eps; ep++) 3641b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); 3642b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3643b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), 3644b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->supplies); 3645d00b41428042e72d9dc2557d9147434a4e3d631fRobert Baldyga clk_disable(hsotg->clk); 3646b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski } 3647b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3648b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski return ret; 3649b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski} 3650b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3651b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowskistatic int s3c_hsotg_resume(struct platform_device *pdev) 3652b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski{ 3653b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 3654b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski unsigned long flags; 3655b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ret = 0; 3656b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3657b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) { 3658b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski dev_info(hsotg->dev, "resuming usb gadget %s\n", 3659b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->driver->driver.name); 3660d00b41428042e72d9dc2557d9147434a4e3d631fRobert Baldyga 3661d00b41428042e72d9dc2557d9147434a4e3d631fRobert Baldyga clk_enable(hsotg->clk); 3662b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 3663b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->supplies); 3664b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski } 3665b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3666b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_lock_irqsave(&hsotg->lock, flags); 3667b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->last_rst = jiffies; 3668b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_phy_enable(hsotg); 3669b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_core_init(hsotg); 3670b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_unlock_irqrestore(&hsotg->lock, flags); 3671b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3672b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski return ret; 3673b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski} 36745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3675c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#ifdef CONFIG_OF 3676c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figastatic const struct of_device_id s3c_hsotg_of_ids[] = { 3677c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa { .compatible = "samsung,s3c6400-hsotg", }, 36780d33d825632737c8d3353c80c8701252682bcb03Matt Porter { .compatible = "snps,dwc2", }, 3679c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa { /* sentinel */ } 3680c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa}; 3681c50f056c360673ef196b49bfa161d841f0fbe92eTomasz FigaMODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids); 3682c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#endif 3683c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa 36845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct platform_driver s3c_hsotg_driver = { 36855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .driver = { 36865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .name = "s3c-hsotg", 36875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 3688c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa .of_match_table = of_match_ptr(s3c_hsotg_of_ids), 36895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks }, 36905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .probe = s3c_hsotg_probe, 36917690417db5085f0de03aa70b8ca01b0118e8a1b4Bill Pemberton .remove = s3c_hsotg_remove, 36925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .suspend = s3c_hsotg_suspend, 36935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .resume = s3c_hsotg_resume, 36945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 36955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3696cc27c96c2bee93068bfc60ea6b09611d88cef429Axel Linmodule_platform_driver(s3c_hsotg_driver); 36975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_DESCRIPTION("Samsung S3C USB High-speed/OtG device"); 36995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); 37005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_LICENSE("GPL"); 37015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_ALIAS("platform:s3c-hsotg"); 3702