gadget.c revision d04477d84be0bcac96452bdb824ff6eec4b49c96
18b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 28b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * linux/drivers/usb/gadget/s3c-hsotg.c 35b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4dfbc6fa3e1f19d31aeb6afdffeede7271e29bfbfAnton Tikhomirov * Copyright (c) 2011 Samsung Electronics Co., Ltd. 5dfbc6fa3e1f19d31aeb6afdffeede7271e29bfbfAnton Tikhomirov * http://www.samsung.com 6dfbc6fa3e1f19d31aeb6afdffeede7271e29bfbfAnton Tikhomirov * 75b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Copyright 2008 Openmoko, Inc. 85b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Copyright 2008 Simtec Electronics 95b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Ben Dooks <ben@simtec.co.uk> 105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * http://armlinux.simtec.co.uk/ 115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * S3C USB2.0 High-speed / OtG driver 135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This program is free software; you can redistribute it and/or modify 155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * it under the terms of the GNU General Public License version 2 as 165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * published by the Free Software Foundation. 178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/kernel.h> 205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/module.h> 215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/spinlock.h> 225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/interrupt.h> 235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/platform_device.h> 245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/dma-mapping.h> 255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/debugfs.h> 265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/seq_file.h> 275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/delay.h> 285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/io.h> 295a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 30e50bf385bfadeaacfb8af07b9b78dcfdef339981Maurus Cuelenaere#include <linux/clk.h> 31fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski#include <linux/regulator/consumer.h> 32c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#include <linux/of_platform.h> 3374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter#include <linux/phy/phy.h> 345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/usb/ch9.h> 365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks#include <linux/usb/gadget.h> 37b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri#include <linux/usb/phy.h> 38126625e1bf3228a3db7359310344617bee878517Lukasz Majewski#include <linux/platform_data/s3c-hsotg.h> 395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 40f7c0b14351c483bdeb86a81d609e26263cb0dd30Dinh Nguyen#include "core.h" 415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* conversion functions */ 435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline struct s3c_hsotg_req *our_req(struct usb_request *req) 445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return container_of(req, struct s3c_hsotg_req, req); 465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline struct s3c_hsotg_ep *our_ep(struct usb_ep *ep) 495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return container_of(ep, struct s3c_hsotg_ep, ep); 515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline struct s3c_hsotg *to_hsotg(struct usb_gadget *gadget) 545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return container_of(gadget, struct s3c_hsotg, gadget); 565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline void __orr32(void __iomem *ptr, u32 val) 595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(readl(ptr) | val, ptr); 615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline void __bic32(void __iomem *ptr, u32 val) 645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(readl(ptr) & ~val, ptr); 665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* forward decleration of functions */ 695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_dump(struct s3c_hsotg *hsotg); 705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * using_dma - return the DMA status of the driver. 735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return true if we're using DMA. 765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Currently, we have the DMA support code worked into everywhere 785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that needs it, but the AMBA DMA implementation in the hardware can 795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * only DMA from 32bit aligned addresses. This means that gadgets such 805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * as the CDC Ethernet cannot work as they often pass packets which are 815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * not 32bit aligned. 825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Unfortunately the choice to use DMA or not is global to the controller 845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * and seems to be only settable when the controller is being put through 855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * a core reset. This means we either need to fix the gadgets to take 865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * account of DMA alignment, or add bounce buffers (yuerk). 875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Until this issue is sorted out, we always return 'false'. 895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline bool using_dma(struct s3c_hsotg *hsotg) 915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return false; /* support is not complete */ 935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_en_gsint - enable one or more of the general interrupt 975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ints: A bitmask of the interrupts to enable 995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 1005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_en_gsint(struct s3c_hsotg *hsotg, u32 ints) 1015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 10294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gsintmsk = readl(hsotg->regs + GINTMSK); 1035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 new_gsintmsk; 1045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks new_gsintmsk = gsintmsk | ints; 1065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (new_gsintmsk != gsintmsk) { 1085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "gsintmsk now 0x%08x\n", new_gsintmsk); 10994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(new_gsintmsk, hsotg->regs + GINTMSK); 1105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 1115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 1125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_disable_gsint - disable one or more of the general interrupt 1155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 1165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ints: A bitmask of the interrupts to enable 1175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 1185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_disable_gsint(struct s3c_hsotg *hsotg, u32 ints) 1195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 12094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gsintmsk = readl(hsotg->regs + GINTMSK); 1215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 new_gsintmsk; 1225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks new_gsintmsk = gsintmsk & ~ints; 1245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (new_gsintmsk != gsintmsk) 12694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(new_gsintmsk, hsotg->regs + GINTMSK); 1275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 1285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ctrl_epint - enable/disable an endpoint irq 1315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 1325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint index 1335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @dir_in: True if direction is in. 1345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @en: The enable value, true to enable 1355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 1365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Set or clear the mask for an individual endpoint's interrupt 1375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * request. 1385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 1395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_ctrl_epint(struct s3c_hsotg *hsotg, 1405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int ep, unsigned int dir_in, 1415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int en) 1425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 1435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 1445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 bit = 1 << ep; 1455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 daint; 1465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!dir_in) 1485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bit <<= 16; 1495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks local_irq_save(flags); 15194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski daint = readl(hsotg->regs + DAINTMSK); 1525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (en) 1535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks daint |= bit; 1545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 1555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks daint &= ~bit; 15694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(daint, hsotg->regs + DAINTMSK); 1575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks local_irq_restore(flags); 1585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 1595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_init_fifo - initialise non-periodic FIFOs 1625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance. 1635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 1645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_init_fifo(struct s3c_hsotg *hsotg) 1655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 1660f002d200598918f5058dfcfda3da46f29019765Ben Dooks unsigned int ep; 1670f002d200598918f5058dfcfda3da46f29019765Ben Dooks unsigned int addr; 1680f002d200598918f5058dfcfda3da46f29019765Ben Dooks unsigned int size; 1691703a6d3c38944731ba23594843a704d828266f3Ben Dooks int timeout; 1700f002d200598918f5058dfcfda3da46f29019765Ben Dooks u32 val; 1710f002d200598918f5058dfcfda3da46f29019765Ben Dooks 1726d091ee761992f804a1dcd411836ad0abb71be10Ben Dooks /* set FIFO sizes to 2048/1024 */ 1735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(2048, hsotg->regs + GRXFSIZ); 17547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel((2048 << FIFOSIZE_STARTADDR_SHIFT) | 17647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen (1024 << FIFOSIZE_DEPTH_SHIFT), hsotg->regs + GNPTXFSIZ); 1770f002d200598918f5058dfcfda3da46f29019765Ben Dooks 1788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 1798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * arange all the rest of the TX FIFOs, as some versions of this 1800f002d200598918f5058dfcfda3da46f29019765Ben Dooks * block have overlapping default addresses. This also ensures 1810f002d200598918f5058dfcfda3da46f29019765Ben Dooks * that if the settings have been changed, then they are set to 1828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * known values. 1838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 1840f002d200598918f5058dfcfda3da46f29019765Ben Dooks 1850f002d200598918f5058dfcfda3da46f29019765Ben Dooks /* start at the end of the GNPTXFSIZ, rounded up */ 1860f002d200598918f5058dfcfda3da46f29019765Ben Dooks addr = 2048 + 1024; 1870f002d200598918f5058dfcfda3da46f29019765Ben Dooks size = 768; 1880f002d200598918f5058dfcfda3da46f29019765Ben Dooks 1898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 1908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * currently we allocate TX FIFOs for all possible endpoints, 1918b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * and assume that they are all the same size. 1928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 1930f002d200598918f5058dfcfda3da46f29019765Ben Dooks 194f7a83fe19336125d7eb26488788dc66c03f2c08eAnton Tikhomirov for (ep = 1; ep <= 15; ep++) { 1950f002d200598918f5058dfcfda3da46f29019765Ben Dooks val = addr; 19647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val |= size << FIFOSIZE_DEPTH_SHIFT; 1970f002d200598918f5058dfcfda3da46f29019765Ben Dooks addr += size; 1980f002d200598918f5058dfcfda3da46f29019765Ben Dooks 19947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(val, hsotg->regs + DPTXFSIZN(ep)); 2000f002d200598918f5058dfcfda3da46f29019765Ben Dooks } 2011703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 2038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * according to p428 of the design guide, we need to ensure that 2048b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * all fifos are flushed before continuing 2058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2061703a6d3c38944731ba23594843a704d828266f3Ben Dooks 20747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_TXFNUM(0x10) | GRSTCTL_TXFFLSH | 20847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GRSTCTL_RXFFLSH, hsotg->regs + GRSTCTL); 2091703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2101703a6d3c38944731ba23594843a704d828266f3Ben Dooks /* wait until the fifos are both flushed */ 2111703a6d3c38944731ba23594843a704d828266f3Ben Dooks timeout = 100; 2121703a6d3c38944731ba23594843a704d828266f3Ben Dooks while (1) { 21394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(hsotg->regs + GRSTCTL); 2141703a6d3c38944731ba23594843a704d828266f3Ben Dooks 21547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((val & (GRSTCTL_TXFFLSH | GRSTCTL_RXFFLSH)) == 0) 2161703a6d3c38944731ba23594843a704d828266f3Ben Dooks break; 2171703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2181703a6d3c38944731ba23594843a704d828266f3Ben Dooks if (--timeout == 0) { 2191703a6d3c38944731ba23594843a704d828266f3Ben Dooks dev_err(hsotg->dev, 2201703a6d3c38944731ba23594843a704d828266f3Ben Dooks "%s: timeout flushing fifos (GRSTCTL=%08x)\n", 2211703a6d3c38944731ba23594843a704d828266f3Ben Dooks __func__, val); 2221703a6d3c38944731ba23594843a704d828266f3Ben Dooks } 2231703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2241703a6d3c38944731ba23594843a704d828266f3Ben Dooks udelay(1); 2251703a6d3c38944731ba23594843a704d828266f3Ben Dooks } 2261703a6d3c38944731ba23594843a704d828266f3Ben Dooks 2271703a6d3c38944731ba23594843a704d828266f3Ben Dooks dev_dbg(hsotg->dev, "FIFOs reset, timeout at %d\n", timeout); 2285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: USB endpoint to allocate request for. 2325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @flags: Allocation flags 2335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Allocate a new USB request structure appropriate for the specified endpoint 2355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2360978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brownstatic struct usb_request *s3c_hsotg_ep_alloc_request(struct usb_ep *ep, 2370978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brown gfp_t flags) 2385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req; 2405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req = kzalloc(sizeof(struct s3c_hsotg_req), flags); 2425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) 2435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 2445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&req->queue); 2465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return &req->req; 2485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is_ep_periodic - return true if the endpoint is in periodic mode. 2525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to query. 2535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Returns true if the endpoint is in periodic mode, meaning it is being 2555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * used for an Interrupt or ISO transfer. 2565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 2575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic inline int is_ep_periodic(struct s3c_hsotg_ep *hs_ep) 2585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return hs_ep->periodic; 2605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_unmap_dma - unmap the DMA memory being used for the request 2645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 2655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint for the request 2665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request being processed. 2675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is the reverse of s3c_hsotg_map_dma(), called for the completion 2695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of a request to ensure the buffer is ready for access by the caller. 2708b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_unmap_dma(struct s3c_hsotg *hsotg, 2725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 2735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req) 2745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = &hs_req->req; 2765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* ignore this if we're not moving any data */ 2785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.length == 0) 2795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 2805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28117d966a325a7ccfb5970839fb5b2ebb9e3909a6fJingoo Han usb_gadget_unmap_request(&hsotg->gadget, req, hs_ep->dir_in); 2825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 2835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_write_fifo - write packet Data to the TxFIFO 2865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The controller state. 2875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint we're going to write for. 2885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to write data for. 2895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is called when the TxFIFO has some space in it to hold a new 2915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transmission and we have something to give it. The actual setup of 2925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the data size is done elsewhere, so all we have to do is to actually 2935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * write the data. 2945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The return value is zero if there is more space (or nothing was done) 2965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * otherwise -ENOSPC is returned if the FIFO space was used up. 2975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 2985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This routine is only needed for PIO 2998b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg, 3015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 3025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req) 3035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool periodic = is_ep_periodic(hs_ep); 30594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 gnptxsts = readl(hsotg->regs + GNPTXSTS); 3065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int buf_pos = hs_req->req.actual; 3075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int to_write = hs_ep->size_loaded; 3085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void *data; 3095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int can_write; 3105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int pkt_round; 3114fca54aa5829328a356aea31895b817dacba2861Robert Baldyga int max_transfer; 3125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write -= (buf_pos - hs_ep->last_load); 3145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if there's nothing to write, get out early */ 3165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write == 0) 3175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 3185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (periodic && !hsotg->dedicated_fifos) { 32094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DIEPTSIZ(hs_ep->index)); 3215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_left; 3225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_done; 3235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * work out how much data was loaded so we can calculate 3268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * how much data is left in the fifo. 3278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 3305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3318b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3328b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if shared fifo, we cannot write anything until the 333e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks * previous data has been completely sent. 334e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks */ 335e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks if (hs_ep->fifo_load != 0) { 33647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_PTXFEMP); 337e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks return -ENOSPC; 338e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks } 339e7a9ff54271bf0ddbf641e5a0bde3ebda35808beBen Dooks 3405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: left=%d, load=%d, fifo=%d, size %d\n", 3415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, size_left, 3425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->size_loaded, hs_ep->fifo_load, hs_ep->fifo_size); 3435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* how much of the data has moved */ 3455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 3465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* how much data is left in the fifo */ 3485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = hs_ep->fifo_load - size_done; 3495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: => can_write1=%d\n", 3505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, can_write); 3515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = hs_ep->fifo_size - can_write; 3535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: => can_write2=%d\n", 3545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, can_write); 3555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (can_write <= 0) { 35747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_PTXFEMP); 3585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 3595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 36010aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks } else if (hsotg->dedicated_fifos && hs_ep->index != 0) { 36194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski can_write = readl(hsotg->regs + DTXFSTS(hs_ep->index)); 36210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 36310aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks can_write &= 0xffff; 36410aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks can_write *= 4; 3655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 36647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (GNPTXSTS_NP_TXQ_SPC_AVAIL_GET(gnptxsts) == 0) { 3675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 3685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: no queue slots available (0x%08x)\n", 3695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, gnptxsts); 3705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_NPTXFEMP); 3725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 3735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 3745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 37547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen can_write = GNPTXSTS_NP_TXF_SPC_AVAIL_GET(gnptxsts); 376679f9b7c7c7d3c746792138e9d7d76578ef52c41Ben Dooks can_write *= 4; /* fifo size is in 32bit quantities. */ 3775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 3785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3794fca54aa5829328a356aea31895b817dacba2861Robert Baldyga max_transfer = hs_ep->ep.maxpacket * hs_ep->mc; 3804fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 3814fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_dbg(hsotg->dev, "%s: GNPTXSTS=%08x, can=%d, to=%d, max_transfer %d\n", 3824fca54aa5829328a356aea31895b817dacba2861Robert Baldyga __func__, gnptxsts, can_write, to_write, max_transfer); 3835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3848b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * limit to 512 bytes of data, it seems at least on the non-periodic 3865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * FIFO, requests of >512 cause the endpoint to get stuck with a 3875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * fragment of the end of the transfer in it. 3885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 389811f33033f9e6a00756e38990d82214c8c619f4cRobert Baldyga if (can_write > 512 && !periodic) 3905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks can_write = 512; 3915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 3938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * limit the write to one max-packet size worth of data, but allow 39403e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks * the transfer to return that it did not run out of fifo space 3958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * doing it. 3968b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3974fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (to_write > max_transfer) { 3984fca54aa5829328a356aea31895b817dacba2861Robert Baldyga to_write = max_transfer; 39903e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks 4005cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga /* it's needed only when we do not use dedicated fifos */ 4015cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga if (!hsotg->dedicated_fifos) 4025cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga s3c_hsotg_en_gsint(hsotg, 40347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen periodic ? GINTSTS_PTXFEMP : 40447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_NPTXFEMP); 40503e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks } 40603e10e5ab5ba6511ddaf80085cf08c62e9336fa5Ben Dooks 4075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* see if we can write data */ 4085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write > can_write) { 4105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write = can_write; 4114fca54aa5829328a356aea31895b817dacba2861Robert Baldyga pkt_round = to_write % max_transfer; 4125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4138b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Round the write down to an 4155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * exact number of packets. 4165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, we do not currently check to see if we can ever 4185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * write a full packet or not to the FIFO. 4195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 4205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (pkt_round) 4225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write -= pkt_round; 4235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * enable correct FIFO interrupt to alert us when there 4268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * is more room left. 4278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 4285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4295cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga /* it's needed only when we do not use dedicated fifos */ 4305cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga if (!hsotg->dedicated_fifos) 4315cb2ff0cdd60aef07c592a9d09349b5993fdf9b4Robert Baldyga s3c_hsotg_en_gsint(hsotg, 43247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen periodic ? GINTSTS_PTXFEMP : 43347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_NPTXFEMP); 4345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 4355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "write %d/%d, can_write %d, done %d\n", 4375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write, hs_req->req.length, can_write, buf_pos); 4385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_write <= 0) 4405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOSPC; 4415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual = buf_pos + to_write; 4435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->total_data += to_write; 4445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (periodic) 4465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->fifo_load += to_write; 4475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_write = DIV_ROUND_UP(to_write, 4); 4495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks data = hs_req->req.buf + buf_pos; 4505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4511a7ed5bec407478b9ce5e3267708110277851614Matt Porter iowrite32_rep(hsotg->regs + EPFIFO(hs_ep->index), data, to_write); 4525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return (to_write >= can_write) ? -ENOSPC : 0; 4545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 4555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 4575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * get_ep_limit - get the maximum data legnth for this endpoint 4585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint 4595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 4605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return the maximum data that can be queued in one go on a given endpoint 4615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so that transfers that are too long can be split. 4625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 4635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic unsigned get_ep_limit(struct s3c_hsotg_ep *hs_ep) 4645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 4655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 4665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxsize; 4675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxpkt; 4685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0) { 47047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxsize = DXEPTSIZ_XFERSIZE_LIMIT + 1; 47147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxpkt = DXEPTSIZ_PKTCNT_LIMIT + 1; 4725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 473b05ca580c39314c8527e2e1c36a823970cc01683Ben Dooks maxsize = 64+64; 47466e5c643488a26d2a6b737bdbd92fc72f13cdeacJingoo Han if (hs_ep->dir_in) 47547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen maxpkt = DIEPTSIZ0_PKTCNT_LIMIT + 1; 47666e5c643488a26d2a6b737bdbd92fc72f13cdeacJingoo Han else 4775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxpkt = 2; 4785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 4795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* we made the constant loading easier above by using +1 */ 4815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxpkt--; 4825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxsize--; 4835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4848b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 4858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * constrain by packet count if maxpkts*pktsize is greater 4868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * than the length register size. 4878b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 4885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((maxpkt * hs_ep->ep.maxpacket) < maxsize) 4905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxsize = maxpkt * hs_ep->ep.maxpacket; 4915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return maxsize; 4935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 4945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 4955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 4965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_start_req - start a USB request from an endpoint's queue 4975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The controller state. 4985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to process a request for 4995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to start. 5005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @continuing: True if we are doing more for the current request. 5015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 5025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Start the given request running by setting the endpoint registers 5035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * appropriately, and writing any data to the FIFOs. 5045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 5055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_start_req(struct s3c_hsotg *hsotg, 5065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 5075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req, 5085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool continuing) 5095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 5105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *ureq = &hs_req->req; 5115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 5125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in = hs_ep->dir_in; 5135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 5145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epsize_reg; 5155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epsize; 5165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 5175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned length; 5185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned packets; 5195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned maxreq; 5205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0) { 5225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_ep->req && !continuing) { 5235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: active request\n", __func__); 5245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 5255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 5265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else if (hs_ep->req != hs_req && continuing) { 5275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, 5285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: continue different req\n", __func__); 5295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 5305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 5315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 53494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 53594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epsize_reg = dir_in ? DIEPTSIZ(index) : DOEPTSIZ(index); 5365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x, ep %d, dir %s\n", 5385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg), index, 5395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->dir_in ? "in" : "out"); 5405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5419c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* If endpoint is stalled, we will restart request later */ 5429c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov ctrl = readl(hsotg->regs + epctrl_reg); 5439c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 54447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ctrl & DXEPCTL_STALL) { 5459c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov dev_warn(hsotg->dev, "%s: ep%d is stalled\n", __func__, index); 5469c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return; 5479c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 5489c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 5495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks length = ureq->length - ureq->actual; 55071225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski dev_dbg(hsotg->dev, "ureq->length:%d ureq->actual:%d\n", 55171225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski ureq->length, ureq->actual); 5525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (0) 5535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 5540cc4cf6f3049fe174b6698016e046a233a2a6045Fabio Estevam "REQ buf %p len %d dma %pad noi=%d zp=%d snok=%d\n", 5558b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han ureq->buf, length, &ureq->dma, 5565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ureq->no_interrupt, ureq->zero, ureq->short_not_ok); 5575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxreq = get_ep_limit(hs_ep); 5595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length > maxreq) { 5605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int round = maxreq % hs_ep->ep.maxpacket; 5615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: length %d, max-req %d, r %d\n", 5635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, length, maxreq, round); 5645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* round down to multiple of packets */ 5665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (round) 5675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks maxreq -= round; 5685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks length = maxreq; 5705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length) 5735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets = DIV_ROUND_UP(length, hs_ep->ep.maxpacket); 5745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 5755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets = 1; /* send one packet if length is zero. */ 5765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5774fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->isochronous && length > (hs_ep->mc * hs_ep->ep.maxpacket)) { 5784fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_err(hsotg->dev, "req length > maxpacket*mc\n"); 5794fca54aa5829328a356aea31895b817dacba2861Robert Baldyga return; 5804fca54aa5829328a356aea31895b817dacba2861Robert Baldyga } 5814fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 5825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in && index != 0) 5834fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->isochronous) 58447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize = DXEPTSIZ_MC(packets); 5854fca54aa5829328a356aea31895b817dacba2861Robert Baldyga else 58647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize = DXEPTSIZ_MC(1); 5875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 5885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epsize = 0; 5895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index != 0 && ureq->zero) { 5918b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 5928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * test for the packets being exactly right for the 5938b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transfer 5948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 5955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 5965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length == (packets * hs_ep->ep.maxpacket)) 5975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks packets++; 5985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 5995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 60047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize |= DXEPTSIZ_PKTCNT(packets); 60147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epsize |= DXEPTSIZ_XFERSIZE(length); 6025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %d@%d/%d, 0x%08x => 0x%08x\n", 6045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, packets, length, ureq->length, epsize, epsize_reg); 6055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* store the request as the current one we're doing */ 6075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->req = hs_req; 6085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* write size / packets */ 6105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epsize, hsotg->regs + epsize_reg); 6115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 612db1d8ba36551bf55222c7961d9e9a1195a612fdeAnton Tikhomirov if (using_dma(hsotg) && !continuing) { 6135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int dma_reg; 6145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6158b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * write DMA address to control register, buffer already 6178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * synced by s3c_hsotg_ep_queue(). 6188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 62094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dma_reg = dir_in ? DIEPDMA(index) : DOEPDMA(index); 6215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ureq->dma, hsotg->regs + dma_reg); 6225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6230cc4cf6f3049fe174b6698016e046a233a2a6045Fabio Estevam dev_dbg(hsotg->dev, "%s: %pad => 0x%08x\n", 6248b3bc14f2d841eaabaaad6aba05b7657dd0b5c7eJingoo Han __func__, &ureq->dma, dma_reg); 6255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 6265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 62747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ 62847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_USBACTEP; 62971225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 63071225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski dev_dbg(hsotg->dev, "setup req:%d\n", hsotg->setup); 63171225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 63271225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski /* For Setup request do not clear NAK */ 63371225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski if (hsotg->setup && index == 0) 63471225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski hsotg->setup = 0; 63571225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski else 63647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ 63771225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski 6385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); 6405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ctrl, hsotg->regs + epctrl_reg); 6415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6428b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6438b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set these, it seems that DMA support increments past the end 6445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the packet buffer so we need to calculate the length from 6458b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * this information. 6468b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->size_loaded = length; 6485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->last_load = ureq->actual; 6495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in && !using_dma(hsotg)) { 6515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* set these anyway, we may need them for non-periodic in */ 6525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->fifo_load = 0; 6535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); 6555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 6565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * clear the INTknTXFEmpMsk when we start request, more as a aide 6598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * to debugging to see what is going on. 6608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) 66247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DIEPMSK_INTKNTXFEMPMSK, 66394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DIEPINT(index)); 6645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6658b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 6668b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Note, trying to clear the NAK here causes problems with transmit 6678b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * on the S3C6400 ending up with the TXFIFO becoming full. 6688b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* check ep is enabled */ 67147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (!(readl(hsotg->regs + epctrl_reg) & DXEPCTL_EPENA)) 6725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, 67347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "ep%d: failed to become enabled (DXEPCTL=0x%08x)?\n", 6745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks index, readl(hsotg->regs + epctrl_reg)); 6755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 67647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dev_dbg(hsotg->dev, "%s: DXEPCTL=0x%08x\n", 6775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg)); 678afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga 679afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga /* enable ep interrupts */ 680afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 1); 6815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 6825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 6835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 6845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_map_dma - map the DMA memory being used for the request 6855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 6865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint the request is on. 6875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request being processed. 6885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 6895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We've been asked to queue a request, so ensure that the memory buffer 6905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is correctly setup for DMA. If we've been passed an extant DMA address 6915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * then ensure the buffer has been synced to memory. If our buffer has no 6925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * DMA memory, then we map the memory and mark our request to allow us to 6935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * cleanup on completion. 6948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 6955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_map_dma(struct s3c_hsotg *hsotg, 6965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 6975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 6985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 6995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 700e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi int ret; 7015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if the length is zero, ignore the DMA data */ 7035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.length == 0) 7045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 7055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 706e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi ret = usb_gadget_map_request(&hsotg->gadget, req, hs_ep->dir_in); 707e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi if (ret) 708e58ebcd14210d3def22ba44d9d14daffbe2eb8e0Felipe Balbi goto dma_error; 7095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 7115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksdma_error: 7135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to map buffer %p, %d bytes\n", 7145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, req->buf, req->length); 7155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EIO; 7175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, 7205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks gfp_t gfp_flags) 7215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 7225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 7235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 7245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 7255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool first; 7265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hs->dev, "%s: req %p: %d@%p, noi=%d, zero=%d, snok=%d\n", 7285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->name, req, req->length, req->buf, req->no_interrupt, 7295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero, req->short_not_ok); 7305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* initialise status of the request */ 7325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_req->queue); 7335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->actual = 0; 7345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->status = -EINPROGRESS; 7355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* if we're using DMA, sync the buffers as necessary */ 7375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hs)) { 7385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret = s3c_hsotg_map_dma(hs, hs_ep, req); 7395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) 7405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 7415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 7425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks first = list_empty(&hs_ep->queue); 7445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_add_tail(&hs_req->queue, &hs_ep->queue); 7455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (first) 7475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hs, hs_ep, hs_req, false); 7485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 7505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7525ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewskistatic int s3c_hsotg_ep_queue_lock(struct usb_ep *ep, struct usb_request *req, 7535ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski gfp_t gfp_flags) 7545ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski{ 7555ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg_ep *hs_ep = our_ep(ep); 7565ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg *hs = hs_ep->parent; 7575ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski unsigned long flags = 0; 7585ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski int ret = 0; 7595ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 7605ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hs->lock, flags); 7615ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski ret = s3c_hsotg_ep_queue(ep, req, gfp_flags); 7625ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 7635ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 7645ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski return ret; 7655ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski} 7665ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 7675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_ep_free_request(struct usb_ep *ep, 7685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 7695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 7705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 7715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kfree(hs_req); 7735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 7765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_oursetup - setup completion callback 7775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the request was on. 7785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request completed. 7795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 7805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Called on completion of any requests the driver itself 7815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * submitted that need cleaning up. 7825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 7835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_oursetup(struct usb_ep *ep, 7845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 7855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 7865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 7875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 7885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep %p, req %p\n", __func__, ep, req); 7905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_free_request(ep, req); 7925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 7935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 7945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 7955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * ep_from_windex - convert control wIndex value to endpoint 7965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 7975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @windex: The control request wIndex field (in host order). 7985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 7995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Convert the given wIndex into a pointer to an driver endpoint 8005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * structure, or return NULL if it is not a valid endpoint. 8018b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 8025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct s3c_hsotg_ep *ep_from_windex(struct s3c_hsotg *hsotg, 8035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 windex) 8045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[windex & 0x7F]; 8065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir = (windex & USB_DIR_IN) ? 1 : 0; 8075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx = windex & 0x7F; 8085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (windex >= 0x100) 8105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 8115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 812b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (idx > hsotg->num_of_eps) 8135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 8145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (idx && ep->dir_in != dir) 8165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return NULL; 8175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ep; 8195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 8205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 8225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_send_reply - send reply to control request 8235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 8245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: Endpoint 0 8255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @buff: Buffer for request 8265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @length: Length of reply. 8275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 8285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Create a request and queue it on the given endpoint. This is useful as 8295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * an internal method of sending replies to certain control requests, etc. 8305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 8315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_send_reply(struct s3c_hsotg *hsotg, 8325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep, 8335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void *buff, 8345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int length) 8355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req; 8375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 8385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: buff %p, len %d\n", __func__, buff, length); 8405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req = s3c_hsotg_ep_alloc_request(&ep->ep, GFP_ATOMIC); 8425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->ep0_reply = req; 8435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) { 8445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: cannot alloc req\n", __func__); 8455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOMEM; 8465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 8475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->buf = hsotg->ep0_buff; 8495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->length = length; 8505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero = 1; /* always do zero-length final transfer */ 8515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->complete = s3c_hsotg_complete_oursetup; 8525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (length) 8545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks memcpy(req->buf, buff, length); 8555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 8565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->sent_zlp = 1; 8575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_ep_queue(&ep->ep, req, GFP_ATOMIC); 8595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 8605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: cannot queue req\n", __func__); 8615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 8625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 8635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 8655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 8665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 8685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_req_status - process request GET_STATUS 8695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 8705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: USB control request 8715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 8725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_process_req_status(struct s3c_hsotg *hsotg, 8735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 8745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 8755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 8765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 8775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __le16 reply; 8785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 8795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: USB_REQ_GET_STATUS\n", __func__); 8815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep0->dir_in) { 8835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: direction out?\n", __func__); 8845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 8855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 8865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (ctrl->bRequestType & USB_RECIP_MASK) { 8885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_DEVICE: 8895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(0); /* bit 0 => self powered, 8905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * bit 1 => remote wakeup */ 8915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 8925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_INTERFACE: 8945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* currently, the data result should be zero */ 8955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(0); 8965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 8975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 8985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_RECIP_ENDPOINT: 8995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); 9005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep) 9015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 9025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reply = cpu_to_le16(ep->halted ? 1 : 0); 9045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 9055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 9075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 9085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (le16_to_cpu(ctrl->wLength) != 2) 9115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 9125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_send_reply(hsotg, ep0, &reply, 2); 9145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 9155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to send reply\n", __func__); 9165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 9175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 1; 9205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 9215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value); 9235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 9259c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * get_ep_head - return the first request on the endpoint 9269c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @hs_ep: The controller endpoint to get 9279c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * 9289c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * Get the first request on the endpoint. 9299c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 9309c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirovstatic struct s3c_hsotg_req *get_ep_head(struct s3c_hsotg_ep *hs_ep) 9319c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov{ 9329c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (list_empty(&hs_ep->queue)) 9339c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return NULL; 9349c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 9359c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov return list_first_entry(&hs_ep->queue, struct s3c_hsotg_req, queue); 9369c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov} 9379c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 9389c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov/** 9395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_req_featire - process request {SET,CLEAR}_FEATURE 9405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 9415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: USB control request 9425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 9435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg, 9445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 9455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 94626ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 9479c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov struct s3c_hsotg_req *hs_req; 9489c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov bool restart; 9495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE); 9505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 95126ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov int ret; 952bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga bool halted; 9535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %s_FEATURE\n", 9555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, set ? "SET" : "CLEAR"); 9565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ctrl->bRequestType == USB_RECIP_ENDPOINT) { 9585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = ep_from_windex(hsotg, le16_to_cpu(ctrl->wIndex)); 9595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep) { 9605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: no endpoint for 0x%04x\n", 9615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, le16_to_cpu(ctrl->wIndex)); 9625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 9635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 9645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 9655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (le16_to_cpu(ctrl->wValue)) { 9665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_HALT: 967bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga halted = ep->halted; 968bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga 9695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_sethalt(&ep->ep, set); 97026ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov 97126ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); 97226ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov if (ret) { 97326ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov dev_err(hsotg->dev, 97426ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov "%s: failed to send reply\n", __func__); 97526ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov return ret; 97626ab3d0ce95c270b1ca491d6970aa14852d8e5a3Anton Tikhomirov } 9779c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 978bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga /* 979bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga * we have to complete all requests for ep if it was 980bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga * halted, and the halt was cleared by CLEAR_FEATURE 981bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga */ 982bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga 983bd9ef7bf0c8e129f24b28366e6c7e9ea92a7aed6Robert Baldyga if (!set && halted) { 9849c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* 9859c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * If we have request in progress, 9869c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * then complete it 9879c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 9889c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (ep->req) { 9899c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req = ep->req; 9909c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov ep->req = NULL; 9919c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov list_del_init(&hs_req->queue); 9929c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req->req.complete(&ep->ep, 9939c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov &hs_req->req); 9949c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 9959c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 9969c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* If we have pending request, then start it */ 9979c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov restart = !list_empty(&ep->queue); 9989c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (restart) { 9999c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req = get_ep_head(ep); 10009c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov s3c_hsotg_start_req(hsotg, ep, 10019c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov hs_req, false); 10029c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 10039c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 10049c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 10055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 10065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 10085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; 10095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 10105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else 10115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOENT; /* currently only deal with endpoint */ 10125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 1; 10145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 10155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1016ab93e014f35374a8169b0f465fccee69e04ea34cRobert Baldygastatic void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg); 1017d18f7116a5ddb8263fe62b05ad63e5ceb5875791Robert Baldygastatic void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg); 1018ab93e014f35374a8169b0f465fccee69e04ea34cRobert Baldyga 10195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 1020c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * s3c_hsotg_stall_ep0 - stall ep0 1021c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * @hsotg: The device state 1022c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * 1023c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * Set stall for ep0 as response for setup request. 1024c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1025e9ebe7c3b76c24fd5bc2f3b99db453ea71c3072bJingoo Hanstatic void s3c_hsotg_stall_ep0(struct s3c_hsotg *hsotg) 1026e9ebe7c3b76c24fd5bc2f3b99db453ea71c3072bJingoo Han{ 1027c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 1028c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga u32 reg; 1029c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga u32 ctrl; 1030c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1031c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_dbg(hsotg->dev, "ep0 stall (dir=%d)\n", ep0->dir_in); 1032c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga reg = (ep0->dir_in) ? DIEPCTL0 : DOEPCTL0; 1033c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1034c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga /* 1035c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * DxEPCTL_Stall will be cleared by EP once it has 1036c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * taken effect, so no need to clear later. 1037c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1038c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1039c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga ctrl = readl(hsotg->regs + reg); 104047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_STALL; 104147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; 1042c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga writel(ctrl, hsotg->regs + reg); 1043c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1044c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_dbg(hsotg->dev, 104547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "written DXEPCTL=0x%08x to %08x (DXEPCTL=0x%08x)\n", 1046c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga ctrl, reg, readl(hsotg->regs + reg)); 1047c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1048c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga /* 1049c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * complete won't be called, so we enqueue 1050c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga * setup request here 1051c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga */ 1052c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_enqueue_setup(hsotg); 1053c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga} 1054c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 1055c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga/** 10565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_process_control - process a control request 10575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state 10585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ctrl: The control request received 10595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 10605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The controller has received the SETUP phase of a control request, and 10615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * needs to work out what to do next (and whether to pass it on to the 10625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * gadget driver). 10635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 10645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_process_control(struct s3c_hsotg *hsotg, 10655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_ctrlrequest *ctrl) 10665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 10675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep0 = &hsotg->eps[0]; 10685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret = 0; 10695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 dcfg; 10705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->sent_zlp = 0; 10725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ctrl Req=%02x, Type=%02x, V=%04x, L=%04x\n", 10745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl->bRequest, ctrl->bRequestType, 10755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl->wValue, ctrl->wLength); 10765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 10788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * record the direction of the request, for later use when enquing 10798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * packets onto EP0. 10808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 10815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->dir_in = (ctrl->bRequestType & USB_DIR_IN) ? 1 : 0; 10835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ctrl: dir_in=%d\n", ep0->dir_in); 10845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 10868b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we've no data with this request, then the last part of the 10878b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transaction is going to implicitly be IN. 10888b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 10895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ctrl->wLength == 0) 10905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0->dir_in = 1; 10915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 10925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { 10935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (ctrl->bRequest) { 10945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_SET_ADDRESS: 1095d18f7116a5ddb8263fe62b05ad63e5ceb5875791Robert Baldyga s3c_hsotg_disconnect(hsotg); 109694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dcfg = readl(hsotg->regs + DCFG); 109747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dcfg &= ~DCFG_DEVADDR_MASK; 1098d5dbd3f7d82223b59dc2200c0e9f4f95665a21a4Paul Zimmerman dcfg |= (le16_to_cpu(ctrl->wValue) << 1099d5dbd3f7d82223b59dc2200c0e9f4f95665a21a4Paul Zimmerman DCFG_DEVADDR_SHIFT) & DCFG_DEVADDR_MASK; 110094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(dcfg, hsotg->regs + DCFG); 11015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "new address %d\n", ctrl->wValue); 11035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0); 11055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 11065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_GET_STATUS: 11085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_process_req_status(hsotg, ctrl); 11095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 11105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_CLEAR_FEATURE: 11125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_REQ_SET_FEATURE: 11135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_process_req_feature(hsotg, ctrl); 11145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 11155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* as a fallback, try delivering it to the driver to deal with */ 11195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret == 0 && hsotg->driver) { 112193f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_unlock(&hsotg->lock); 11225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = hsotg->driver->setup(&hsotg->gadget, ctrl); 112393f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_lock(&hsotg->lock); 11245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) 11255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "driver->setup() ret %d\n", ret); 11265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 11298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the request is either unhandlable, or is not formatted correctly 11305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so respond with a STALL for the status stage to indicate failure. 11315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1133c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (ret < 0) 1134c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_stall_ep0(hsotg); 11355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 11365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 11385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_setup - completion of a setup transfer 11395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the request was on. 11405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request completed. 11415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 11425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Called on completion of any requests the driver itself submitted for 11435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * EP0 setup packets 11445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_setup(struct usb_ep *ep, 11465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req) 11475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 11485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 11495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 11505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->status < 0) { 11525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: failed %d\n", __func__, req->status); 11535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 11545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 115693f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_lock(&hsotg->lock); 11575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->actual == 0) 11585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 11595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 11605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_process_control(hsotg, req->buf); 116193f599f279ab56b1761c76e53f9753b26aeefe9eRobert Baldyga spin_unlock(&hsotg->lock); 11625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 11635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 11655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_enqueue_setup - start a request for EP0 packets 11665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 11675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 11685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Enqueue a request on EP0 if necessary to received any SETUP packets 11695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * received from the host. 11705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 11715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg) 11725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 11735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = hsotg->ctrl_req; 11745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 11755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 11765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: queueing setup request\n", __func__); 11785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->zero = 0; 11805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->length = 8; 11815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->buf = hsotg->ctrl_buff; 11825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->complete = s3c_hsotg_complete_setup; 11835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!list_empty(&hs_req->queue)) { 11855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s already queued???\n", __func__); 11865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 11875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].dir_in = 0; 11905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 11915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_ep_queue(&hsotg->eps[0].ep, req, GFP_ATOMIC); 11925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 11935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed queue (%d)\n", __func__, ret); 11948b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 11958b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Don't think there's much we can do other than watch the 11968b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * driver fail. 11978b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 11985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 11995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 12005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 12025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_request - complete a request given to us 12035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 12045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint the request was on. 12055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_req: The request to complete. 12065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @result: The result code (0 => Ok, otherwise errno) 12075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The given request has finished, so call the necessary completion 12095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * if it has one and then look to see if we can start a new request 12105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on the endpoint. 12115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, expects the ep to already be locked as appropriate. 12138b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_request(struct s3c_hsotg *hsotg, 12155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 12165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req, 12175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result) 12185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 12195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks bool restart; 12205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 12225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: nothing to complete?\n", __func__); 12235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 12245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "complete: ep %p %s, req %p, %d => %p\n", 12275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep, hs_ep->ep.name, hs_req, result, hs_req->req.complete); 12285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12308b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * only replace the status if we've not already set an error 12318b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * from a previous transaction 12328b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.status == -EINPROGRESS) 12355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.status = result; 12365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->req = NULL; 12385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_del_init(&hs_req->queue); 12395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) 12415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_unmap_dma(hsotg, hs_ep, hs_req); 12425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12438b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12448b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * call the complete request with the locks off, just in case the 12458b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * request tries to queue more work for this endpoint. 12468b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.complete) { 124922258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock(&hsotg->lock); 12505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.complete(&hs_ep->ep, &hs_req->req); 125122258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock(&hsotg->lock); 12525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12548b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 12558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Look to see if there is anything else to do. Note, the completion 12565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the previous request may have caused a new request to be started 12578b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * so be careful when doing this. 12588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 12595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_ep->req && result >= 0) { 12615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks restart = !list_empty(&hs_ep->queue); 12625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (restart) { 12635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req = get_ep_head(hs_ep); 12645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, false); 12655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 12675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 12685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 12705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_rx_data - receive data from the FIFO for an endpoint 12715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 12725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep_idx: The endpoint index for the data 12735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @size: The size of data in the fifo, in bytes 12745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 12755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The FIFO status shows there is data to read from the FIFO for a given 12765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * endpoint, so sort out whether we need to read the data into a request 12775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that has been made for that endpoint. 12785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 12795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_rx_data(struct s3c_hsotg *hsotg, int ep_idx, int size) 12805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 12815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep_idx]; 12825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 128394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski void __iomem *fifo = hsotg->regs + EPFIFO(ep_idx); 12845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int to_read; 12855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int max_req; 12865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int read_ptr; 12875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 128822258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski 12895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 129094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epctl = readl(hsotg->regs + DOEPCTL(ep_idx)); 12915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ptr; 12925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, 129447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "%s: FIFO %d bytes on ep%d but no req (DXEPCTl=0x%08x)\n", 12955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, size, ep_idx, epctl); 12965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 12975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* dump the data from the FIFO, we've nothing we can do */ 12985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ptr = 0; ptr < size; ptr += 4) 12995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks (void)readl(fifo); 13005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_read = size; 13055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks read_ptr = hs_req->req.actual; 13065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks max_req = hs_req->req.length - read_ptr; 13075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1308a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks dev_dbg(hsotg->dev, "%s: read %d/%d, done %d/%d\n", 1309a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks __func__, to_read, max_req, read_ptr, hs_req->req.length); 1310a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks 13115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (to_read > max_req) { 13128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 13138b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * more data appeared than we where willing 13145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to deal with in this request. 13155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 13165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* currently we don't deal this */ 13185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON_ONCE(1); 13195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->total_data += to_read; 13225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual += to_read; 13235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks to_read = DIV_ROUND_UP(to_read, 4); 13245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 13268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, we might over-write the buffer end by 3 bytes depending on 13278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * alignment of the data. 13288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 13291a7ed5bec407478b9ce5e3267708110277851614Matt Porter ioread32_rep(fifo, hs_req->req.buf + read_ptr, to_read); 13305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 13315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 13335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_send_zlp - send zero-length packet on control endpoint 13345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 13355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @req: The request currently on this endpoint 13365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Generate a zero-length IN packet request for terminating a SETUP 13385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transaction. 13395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Note, since we don't write any data to the TxFIFO, then it is 134125985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * currently believed that we do not need to wait for any space in 13425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the TxFIFO. 13435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 13445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_send_zlp(struct s3c_hsotg *hsotg, 13455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req) 13465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 13475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 13485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!req) { 13505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: no request?\n", __func__); 13515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->req.length == 0) { 13555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].sent_zlp = 1; 13565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 13575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 13595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].dir_in = 1; 13615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->eps[0].sent_zlp = 1; 13625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "sending zero-length packet\n"); 13645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* issue a zero-sized packet to terminate this */ 136647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | 136747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPTSIZ_XFERSIZE(0), hsotg->regs + DIEPTSIZ(0)); 13685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 136994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski ctrl = readl(hsotg->regs + DIEPCTL0); 137047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */ 137147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */ 137247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_USBACTEP; 137394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(ctrl, hsotg->regs + DIEPCTL0); 13745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 13755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 13775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_handle_outdone - handle receiving OutDone/SetupDone from RXFIFO 13785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 13795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @epnum: The endpoint received from 13805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @was_setup: Set if processing a SetupDone event. 13815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 13825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The RXFIFO has delivered an OutDone event, which means that the data 13835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * transfer for an OUT endpoint has been completed, either by a short 13845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * packet or by the finish of a transfer. 13858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 13865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_handle_outdone(struct s3c_hsotg *hsotg, 13875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum, bool was_setup) 13885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 138994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DOEPTSIZ(epnum)); 13905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[epnum]; 13915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 13925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct usb_request *req = &hs_req->req; 139347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen unsigned size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 13945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result = 0; 13955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 13965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 13975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: no request active\n", __func__); 13985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 13995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) { 14025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned size_done; 14035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14048b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Calculate the size of the transfer by checking how much 14065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * is left in the endpoint size register and then working it 14075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * out from the amount we loaded for the transfer. 14085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We need to do this as DMA pointers are always 32bit aligned 14105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * so may overshoot/undershoot the transfer. 14115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 14125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 14145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done += hs_ep->last_load; 14155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->actual = size_done; 14175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1419a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks /* if there is more request to do, schedule new transfer */ 1420a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks if (req->actual < req->length && size_left == 0) { 1421a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); 1422a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks return; 142371225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski } else if (epnum == 0) { 142471225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski /* 142571225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski * After was_setup = 1 => 142671225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski * set CNAK for non Setup requests 142771225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski */ 142871225beeeba2bde80aac02fadb5c197389fa12e4Lukasz Majewski hsotg->setup = was_setup ? 0 : 1; 1429a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks } 1430a33e7136e9652374f7d54ded3cff8062d8e1e84fBen Dooks 14315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req->actual < req->length && req->short_not_ok) { 14325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: got %d/%d (short not ok) => error\n", 14335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, req->actual, req->length); 14345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14358b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 14368b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * todo - what should we return here? there's no one else 14378b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * even bothering to check the status. 14388b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum == 0) { 1442d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* 1443d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Condition req->complete != s3c_hsotg_complete_setup says: 1444d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * send ZLP when we have an asynchronous request from gadget 1445d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski */ 14465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!was_setup && req->complete != s3c_hsotg_complete_setup) 14475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_send_zlp(hsotg, hs_req); 14485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 14495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14505ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result); 14515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 14525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 14545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_read_frameno - read current frame number 14555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 14565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Return the current frame number 14588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 14595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic u32 s3c_hsotg_read_frameno(struct s3c_hsotg *hsotg) 14605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 14615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 dsts; 14625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 146394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts = readl(hsotg->regs + DSTS); 146494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts &= DSTS_SOFFN_MASK; 146594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dsts >>= DSTS_SOFFN_SHIFT; 14665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return dsts; 14685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 14695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 14715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_handle_rx - RX FIFO has data 14725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device instance 14735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * The IRQ handler has detected that the RX FIFO has some data in it 14755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * that requires processing, so find out what is in there and do the 14765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * appropriate read. 14775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 147825985edcedea6396277003854657b5f3cb31a628Lucas De Marchi * The RXFIFO is a true FIFO, the packets coming out are still in packet 14795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * chunks, so if you have x packets received on an endpoint you'll get x 14805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * FIFO events delivered, each with a packet's worth of data in it. 14815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 14825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * When using DMA, we should not be processing events from the RXFIFO 14835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * as the actual data should be sent to the memory directly and we turn 14845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on the completion interrupts to get notifications of transfer completion. 14855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 14860978f8c55cdc7c06b2f1440b030e93fda2c53b2bMark Brownstatic void s3c_hsotg_handle_rx(struct s3c_hsotg *hsotg) 14875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 148894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 grxstsr = readl(hsotg->regs + GRXSTSP); 14895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epnum, status, size; 14905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(using_dma(hsotg)); 14925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 149347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epnum = grxstsr & GRXSTS_EPNUM_MASK; 149447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen status = grxstsr & GRXSTS_PKTSTS_MASK; 14955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 149647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size = grxstsr & GRXSTS_BYTECNT_MASK; 149747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size >>= GRXSTS_BYTECNT_SHIFT; 14985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 14995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (1) 15005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: GRXSTSP=0x%08x (%d@%d)\n", 15015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, grxstsr, size, epnum); 15025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 150347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen switch ((status & GRXSTS_PKTSTS_MASK) >> GRXSTS_PKTSTS_SHIFT) { 150447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_GLOBALOUTNAK: 150547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dev_dbg(hsotg->dev, "GLOBALOUTNAK\n"); 15065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 150847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_OUTDONE: 15095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "OutDone (Frame=0x%08x)\n", 15105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg)); 15115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!using_dma(hsotg)) 15135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, epnum, false); 15145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 151647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_SETUPDONE: 15175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 15185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "SetupDone (Frame=0x%08x, DOPEPCTL=0x%08x)\n", 15195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg), 152094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL(0))); 15215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, epnum, true); 15235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 152547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_OUTRX: 15265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_rx_data(hsotg, epnum, size); 15275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 152947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case GRXSTS_PKTSTS_SETUPRX: 15305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 15315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "SetupRX (Frame=0x%08x, DOPEPCTL=0x%08x)\n", 15325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_read_frameno(hsotg), 153394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL(0))); 15345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_rx_data(hsotg, epnum, size); 15365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks default: 15395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: unknown status %08x\n", 15405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, grxstsr); 15415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_dump(hsotg); 15435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 15445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 15465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 15485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ep0_mps - turn max packet size into register setting 15495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @mps: The maximum packet size in bytes. 15508b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 15515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic u32 s3c_hsotg_ep0_mps(unsigned int mps) 15525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 15535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (mps) { 15545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 64: 155594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_64; 15565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 32: 155794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_32; 15585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 16: 155994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_16; 15605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case 8: 156194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski return D0EPCTL_MPS_8; 15625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 15635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* bad max packet size, warn and return invalid result */ 15655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(1); 15665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return (u32)-1; 15675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 15685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 15705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_set_ep_maxpacket - set endpoint's max-packet field 15715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state. 15725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The index number of the endpoint 15735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @mps: The maximum packet size in bytes 15745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 15755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Configure the maximum packet size for the given endpoint, updating 15765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the hardware control registers to reflect this. 15775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 15785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg, 15795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned int ep, unsigned int mps) 15805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 15815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep]; 15825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 15835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 mpsval; 15844fca54aa5829328a356aea31895b817dacba2861Robert Baldyga u32 mcval; 15855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 reg; 15865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 15875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep == 0) { 15885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* EP0 is a special case */ 15895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks mpsval = s3c_hsotg_ep0_mps(mps); 15905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (mpsval > 3) 15915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto bad_mps; 1592e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga hs_ep->ep.maxpacket = mps; 15934fca54aa5829328a356aea31895b817dacba2861Robert Baldyga hs_ep->mc = 1; 15945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 159547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen mpsval = mps & DXEPCTL_MPS_MASK; 1596e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga if (mpsval > 1024) 15975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto bad_mps; 15984fca54aa5829328a356aea31895b817dacba2861Robert Baldyga mcval = ((mps >> 11) & 0x3) + 1; 15994fca54aa5829328a356aea31895b817dacba2861Robert Baldyga hs_ep->mc = mcval; 16004fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (mcval > 3) 16014fca54aa5829328a356aea31895b817dacba2861Robert Baldyga goto bad_mps; 1602e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga hs_ep->ep.maxpacket = mpsval; 16035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 16045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 16068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * update both the in and out endpoint controldir_ registers, even 16078b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if one of the directions may not be in use. 16088b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 16095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 161094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski reg = readl(regs + DIEPCTL(ep)); 161147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen reg &= ~DXEPCTL_MPS_MASK; 16125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks reg |= mpsval; 161394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(reg, regs + DIEPCTL(ep)); 16145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1615659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov if (ep) { 161694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski reg = readl(regs + DOEPCTL(ep)); 161747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen reg &= ~DXEPCTL_MPS_MASK; 1618659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov reg |= mpsval; 161994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(reg, regs + DOEPCTL(ep)); 1620659ad60cb9128345d0a6b9093dda9b0e366b7937Anton Tikhomirov } 16215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 16235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksbad_mps: 16255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "ep%d: bad mps of %d\n", ep, mps); 16265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 16275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16289c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov/** 16299c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * s3c_hsotg_txfifo_flush - flush Tx FIFO 16309c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @hsotg: The driver state 16319c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov * @idx: The index for the endpoint (0..15) 16329c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov */ 16339c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirovstatic void s3c_hsotg_txfifo_flush(struct s3c_hsotg *hsotg, unsigned int idx) 16349c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov{ 16359c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int timeout; 16369c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int val; 16379c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 163847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_TXFNUM(idx) | GRSTCTL_TXFFLSH, 163994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GRSTCTL); 16409c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16419c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov /* wait until the fifo is flushed */ 16429c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov timeout = 100; 16439c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16449c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov while (1) { 164594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(hsotg->regs + GRSTCTL); 16469c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 164747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((val & (GRSTCTL_TXFFLSH)) == 0) 16489c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov break; 16499c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16509c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (--timeout == 0) { 16519c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov dev_err(hsotg->dev, 16529c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov "%s: timeout flushing fifo (GRSTCTL=%08x)\n", 16539c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov __func__, val); 16549c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 16559c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 16569c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov udelay(1); 16579c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 16589c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov} 16595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 16615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_trytx - check to see if anything needs transmitting 16625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 16635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The driver endpoint to check. 16645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 16655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Check to see if there is a request that has data to send, and if so 16665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * make an attempt to write data into the FIFO. 16675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 16685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_trytx(struct s3c_hsotg *hsotg, 16695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep) 16705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 16715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 16725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1673afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga if (!hs_ep->dir_in || !hs_req) { 1674afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga /** 1675afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga * if request is not enqueued, we disable interrupts 1676afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga * for endpoints, excepting ep0 1677afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga */ 1678afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga if (hs_ep->index != 0) 1679afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, 1680afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga hs_ep->dir_in, 0); 16815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 1682afcf4169a41ef02d3f833f4eccac11038bd2b39cRobert Baldyga } 16835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.actual < hs_req->req.length) { 16855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "trying to write more for ep%d\n", 16865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->index); 16875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return s3c_hsotg_write_fifo(hsotg, hs_ep, hs_req); 16885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 16895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 16915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 16925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 16935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 16945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_complete_in - complete IN transfer 16955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 16965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint that has just completed. 16975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 16985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * An IN transfer has been completed, update the transfer's state and then 16995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * call the relevant completion routines. 17005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 17015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_complete_in(struct s3c_hsotg *hsotg, 17025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep) 17035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 17045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = hs_ep->req; 170594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsize = readl(hsotg->regs + DIEPTSIZ(hs_ep->index)); 17065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int size_left, size_done; 17075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hs_req) { 17095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "XferCompl but no req\n"); 17105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 17115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 17125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1713d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* Finish ZLP handling for IN EP0 transactions */ 1714d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski if (hsotg->eps[0].sent_zlp) { 1715d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "zlp packet received\n"); 17165ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); 1717d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski return; 1718d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski } 1719d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 17208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 17218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Calculate the size of the transfer by checking how much is left 17225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * in the endpoint size register and then working it out from 17235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * the amount we loaded for the transfer. 17245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 17255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * We do this even for DMA, as the transfer may have incremented 17265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * past the end of the buffer (DMA transfers are always 32bit 17275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * aligned). 17285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 17295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 173047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen size_left = DXEPTSIZ_XFERSIZE_GET(epsize); 17315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done = hs_ep->size_loaded - size_left; 17335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks size_done += hs_ep->last_load; 17345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (hs_req->req.actual != size_done) 17365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: adjusting size done %d => %d\n", 17375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, hs_req->req.actual, size_done); 17385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_req->req.actual = size_done; 1740d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "req->length:%d req->actual:%d req->zero:%d\n", 1741d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski hs_req->req.length, hs_req->req.actual, hs_req->req.zero); 1742d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 1743d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski /* 1744d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Check if dealing with Maximum Packet Size(MPS) IN transfer at EP0 1745d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * When sent data is a multiple MPS size (e.g. 64B ,128B ,192B 1746d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * ,256B ... ), after last MPS sized packet send IN ZLP packet to 1747d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * inform the host that no more data is available. 1748d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * The state of req.zero member is checked to be sure that the value to 1749d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * send is smaller than wValue expected from host. 1750d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * Check req.length to NOT send another ZLP when the current one is 1751d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski * under completion (the one for which this completion has been called). 1752d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski */ 1753d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski if (hs_req->req.length && hs_ep->index == 0 && hs_req->req.zero && 1754d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski hs_req->req.length == hs_req->req.actual && 1755d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski !(hs_req->req.length % hs_ep->ep.maxpacket)) { 1756d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski 1757d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski dev_dbg(hsotg->dev, "ep0 zlp IN packet sent\n"); 1758d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski s3c_hsotg_send_zlp(hsotg, hs_req); 17595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1760d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski return; 1761d3ca0259c56ee2dbc537d88a7496aba6b4712981Lukasz Majewski } 17625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!size_left && hs_req->req.actual < hs_req->req.length) { 17645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__); 17655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true); 17665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else 17675ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0); 17685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 17695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 17715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_epint - handle an in/out endpoint interrupt 17725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 17735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @idx: The index for the endpoint (0..15) 17745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @dir_in: Set if this is an IN endpoint 17755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 17765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Process and clear any interrupt pending for an individual endpoint 17778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 17785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx, 17795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in) 17805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 17815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = &hsotg->eps[idx]; 178294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epint_reg = dir_in ? DIEPINT(idx) : DOEPINT(idx); 178394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epctl_reg = dir_in ? DIEPCTL(idx) : DOEPCTL(idx); 178494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 epsiz_reg = dir_in ? DIEPTSIZ(idx) : DOEPTSIZ(idx); 17855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ints; 17861479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga u32 ctrl; 17875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 17885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ints = readl(hsotg->regs + epint_reg); 17891479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga ctrl = readl(hsotg->regs + epctl_reg); 17905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1791a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov /* Clear endpoint interrupts */ 1792a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov writel(ints, hsotg->regs + epint_reg); 1793a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 17945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep%d(%s) DxEPINT=0x%08x\n", 17955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx, dir_in ? "in" : "out", ints); 17965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 179747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_XFERCOMPL) { 17981479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (hs_ep->isochronous && hs_ep->interval == 1) { 179947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ctrl & DXEPCTL_EOFRNUM) 180047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SETEVENFR; 18011479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga else 180247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SETODDFR; 18031479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga writel(ctrl, hsotg->regs + epctl_reg); 18041479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga } 18051479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga 18065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 180747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen "%s: XferCompl: DxEPCTL=0x%08x, DXEPTSIZ=%08x\n", 18085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctl_reg), 18095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks readl(hsotg->regs + epsiz_reg)); 18105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we get OutDone from the FIFO, so we only need to look 18138b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * at completing IN requests here 18148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 18155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) { 18165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_in(hsotg, hs_ep); 18175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 1818c9a64ea884b8b40d70077ffe1e93081f2190f072Ben Dooks if (idx == 0 && !hs_ep->req) 18195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 18205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else if (using_dma(hsotg)) { 18218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * We're using DMA, we need to fire an OutDone here 18238b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * as we ignore the RXFIFO. 18248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 18255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, idx, false); 18275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 183047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_EPDISBLD) { 18315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: EPDisbld\n", __func__); 18325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18339c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (dir_in) { 18349c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov int epctl = readl(hsotg->regs + epctl_reg); 18359c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 18369c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov s3c_hsotg_txfifo_flush(hsotg, idx); 18379c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 183847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if ((epctl & DXEPCTL_STALL) && 183947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen (epctl & DXEPCTL_EPTYPE_BULK)) { 184094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski int dctl = readl(hsotg->regs + DCTL); 18419c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 184247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen dctl |= DCTL_CGNPINNAK; 184394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(dctl, hsotg->regs + DCTL); 18449c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18459c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18469c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 18479c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov 184847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_AHBERR) 18495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: AHBErr\n", __func__); 18505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 185147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_SETUP) { /* Setup or Timeout */ 18525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: Setup/Timeout\n", __func__); 18535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg) && idx == 0) { 18558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 18568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * this is the notification we've received a 18575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * setup packet. In non-DMA mode we'd get this 18585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * from the RXFIFO, instead we need to process 18598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the setup here. 18608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 18615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) 18635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON_ONCE(1); 18645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else 18655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_outdone(hsotg, 0, true); 18665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 186947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DXEPINT_BACK2BACKSETUP) 18705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: B2BSetup/INEPNakEff\n", __func__); 18715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18721479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (dir_in && !hs_ep->isochronous) { 18738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* not sure if this is important, but we'll clear it anyway */ 187447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DIEPMSK_INTKNTXFEMPMSK) { 18755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: ep%d: INTknTXFEmpMsk\n", 18765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx); 18775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* this probably means something bad is happening */ 188047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (ints & DIEPMSK_INTKNEPMISMSK) { 18815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "%s: ep%d: INTknEP\n", 18825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, idx); 18835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 188410aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 188510aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks /* FIFO has space or is empty (see GAHBCFG) */ 188610aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (hsotg->dedicated_fifos && 188747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ints & DIEPMSK_TXFIFOEMPTY) { 188810aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks dev_dbg(hsotg->dev, "%s: ep%d: TxFIFOEmpty\n", 188910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks __func__, idx); 189070fa030ffb652ace81dd5bcab01255b49723caecAnton Tikhomirov if (!using_dma(hsotg)) 189170fa030ffb652ace81dd5bcab01255b49723caecAnton Tikhomirov s3c_hsotg_trytx(hsotg, hs_ep); 189210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks } 18935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 18945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 18955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 18965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 18975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq_enumdone - Handle EnumDone interrupt (enumeration done) 18985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 18995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 19005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Handle updating the device settings after the enumeration phase has 19015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * been completed. 19028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_irq_enumdone(struct s3c_hsotg *hsotg) 19045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 190594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 dsts = readl(hsotg->regs + DSTS); 19065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep0_mps = 0, ep_mps; 19075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19088b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19098b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * This should signal the finish of the enumeration phase 19105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the USB handshaking, so we should now know what rate 19118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we connected at. 19128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "EnumDone (DSTS=0x%08x)\n", dsts); 19155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, since we're limited by the size of transfer on EP0, and 19185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * it seems IN transfers must be a even number of packets we do 19198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * not advertise a 64byte MPS on EP0. 19208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* catch both EnumSpd_FS and EnumSpd_FS48 */ 192347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen switch (dsts & DSTS_ENUMSPD_MASK) { 192447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_FS: 192547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_FS48: 19265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_FULL; 19275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0_mps = EP0_MPS_LIMIT; 1928295538ff7e5389d5aee5845c548f114b793d60c9Robert Baldyga ep_mps = 1023; 19295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 19305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 193147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_HS: 19325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_HIGH; 19335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep0_mps = EP0_MPS_LIMIT; 1934295538ff7e5389d5aee5845c548f114b793d60c9Robert Baldyga ep_mps = 1024; 19355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 19365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 193747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen case DSTS_ENUMSPD_LS: 19385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_LOW; 19398b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19408b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, we don't actually support LS in this driver at the 19415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * moment, and the documentation seems to imply that it isn't 19425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * supported by the PHYs on some of the devices. 19435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 19445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 19455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 1946e538dfdae85244fd2c4231725d82cc1f1bc4942cMichal Nazarewicz dev_info(hsotg->dev, "new device is %s\n", 1947e538dfdae85244fd2c4231725d82cc1f1bc4942cMichal Nazarewicz usb_speed_string(hsotg->gadget.speed)); 19485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19498b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19508b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * we should now know the maximum packet size for an 19518b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * endpoint, so set the endpoints to a default value. 19528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep0_mps) { 19555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int i; 19565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps); 1957b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (i = 1; i < hsotg->num_of_eps; i++) 19585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps); 19595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 19605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* ensure after enumeration our EP0 is active */ 19625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_enqueue_setup(hsotg); 19645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 196694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 196794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 19685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 19695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 19715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * kill_all_requests - remove all requests from the endpoint's queue 19725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 19735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint the requests may be on. 19745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @result: The result code to use. 19755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @force: Force removal of any current requests 19765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 19775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Go through the requests on the given endpoint and mark them 19785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * completed with the given result code. 19795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 19805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void kill_all_requests(struct s3c_hsotg *hsotg, 19815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep, 19825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int result, bool force) 19835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 19845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req, *treq; 19855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry_safe(req, treq, &ep->queue, queue) { 19878b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 19888b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * currently, we can't do much about an already 19898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * running request on an in endpoint 19908b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 19915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep->req == req && ep->dir_in && !force) 19935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 19945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 19955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_request(hsotg, ep, req, 19965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks result); 19975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 1998e9ebe7c3b76c24fd5bc2f3b99db453ea71c3072bJingoo Han if (hsotg->dedicated_fifos) 1999b963a81a4803fb387d6551ea0fb66876e0c8ff12Robert Baldyga if ((readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4 < 3072) 2000b963a81a4803fb387d6551ea0fb66876e0c8ff12Robert Baldyga s3c_hsotg_txfifo_flush(hsotg, ep->index); 20015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 20045e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * s3c_hsotg_disconnect - disconnect service 20055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 20065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 20075e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * The device has been disconnected. Remove all current 20085e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * transactions and signal the gadget driver that this 20095e891342fd0761fed36c187587115e706c0fa358Lukasz Majewski * has happened. 20108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 20115e891342fd0761fed36c187587115e706c0fa358Lukasz Majewskistatic void s3c_hsotg_disconnect(struct s3c_hsotg *hsotg) 20125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 20135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned ep; 20145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2015b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (ep = 0; ep < hsotg->num_of_eps; ep++) 20165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kill_all_requests(hsotg, &hsotg->eps[ep], -ESHUTDOWN, true); 20175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, disconnect); 20195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 20225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq_fifoempty - TX FIFO empty interrupt handler 20235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state: 20245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @periodic: True if this is a periodic FIFO interrupt 20255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 20265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_irq_fifoempty(struct s3c_hsotg *hsotg, bool periodic) 20275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 20285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep; 20295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epno, ret; 20305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* look through for any more data to transmit */ 20325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2033b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epno = 0; epno < hsotg->num_of_eps; epno++) { 20345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep = &hsotg->eps[epno]; 20355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!ep->dir_in) 20375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 20385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if ((periodic && !ep->periodic) || 20405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks (!periodic && ep->periodic)) 20415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks continue; 20425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = s3c_hsotg_trytx(hsotg, ep); 20445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) 20455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 20465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 20475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 20485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/* IRQ flags which will trigger a retry around the IRQ loop */ 205047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen#define IRQ_RETRY_MASK (GINTSTS_NPTXFEMP | \ 205147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_PTXFEMP | \ 205247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_RXFLVL) 20535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 20545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 2055308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * s3c_hsotg_corereset - issue softreset to the core 2056308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * @hsotg: The device state 2057308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * 2058308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * Issue a soft reset to the core, and await the core finishing it. 20598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2060308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewskistatic int s3c_hsotg_corereset(struct s3c_hsotg *hsotg) 2061308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski{ 2062308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski int timeout; 2063308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski u32 grstctl; 2064308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2065308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "resetting core\n"); 2066308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2067308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* issue soft reset */ 206847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GRSTCTL_CSFTRST, hsotg->regs + GRSTCTL); 2069308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 20702868fea2d615d9f445a0ccaf988e1418a9787ebeDu, Changbin timeout = 10000; 2071308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski do { 207294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski grstctl = readl(hsotg->regs + GRSTCTL); 207347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen } while ((grstctl & GRSTCTL_CSFTRST) && timeout-- > 0); 2074308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 207547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (grstctl & GRSTCTL_CSFTRST) { 2076308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_err(hsotg->dev, "Failed to get CSftRst asserted\n"); 2077308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return -EINVAL; 2078308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2079308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 20802868fea2d615d9f445a0ccaf988e1418a9787ebeDu, Changbin timeout = 10000; 2081308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2082308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski while (1) { 208394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 grstctl = readl(hsotg->regs + GRSTCTL); 2084308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2085308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (timeout-- < 0) { 2086308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_info(hsotg->dev, 2087308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski "%s: reset failed, GRSTCTL=%08x\n", 2088308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski __func__, grstctl); 2089308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return -ETIMEDOUT; 2090308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2091308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 209247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (!(grstctl & GRSTCTL_AHBIDLE)) 2093308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski continue; 2094308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2095308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski break; /* reset done */ 2096308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski } 2097308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2098308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "reset successful\n"); 2099308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski return 0; 2100308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski} 2101308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 21028b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 21038b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_core_init - issue softreset to the core 21048b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The device state 21058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 21068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Issue a soft reset to the core, and await the core finishing it. 21078b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2108308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewskistatic void s3c_hsotg_core_init(struct s3c_hsotg *hsotg) 2109308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski{ 2110308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_corereset(hsotg); 2111308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2112308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2113308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * we must now enable ep0 ready for host detection and then 2114308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * set configuration. 2115308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2116308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2117308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* set the PLL on, remove the HNP/SRP and set the PHY */ 211847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(hsotg->phyif | GUSBCFG_TOUTCAL(7) | 211994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski (0x5 << 10), hsotg->regs + GUSBCFG); 2120308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2121308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_init_fifo(hsotg); 2122308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 212347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2124308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 212547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(1 << 18 | DCFG_DEVSPD_HS, hsotg->regs + DCFG); 2126308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2127308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Clear any pending OTG interrupts */ 212894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0xffffffff, hsotg->regs + GOTGINT); 2129308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2130308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Clear any pending interrupts */ 213194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0xffffffff, hsotg->regs + GINTSTS); 2132308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 213347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ERLYSUSP | GINTSTS_SESSREQINT | 213447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_GOUTNAKEFF | GINTSTS_GINNAKEFF | 213547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_CONIDSTSCHNG | GINTSTS_USBRST | 213647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_ENUMDONE | GINTSTS_OTGINT | 213747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GINTSTS_USBSUSP | GINTSTS_WKUPINT, 213847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + GINTMSK); 2139308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2140308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (using_dma(hsotg)) 214147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN | 214247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_HBSTLEN_INCR4, 214394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GAHBCFG); 2144308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski else 214547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(((hsotg->dedicated_fifos) ? (GAHBCFG_NP_TXF_EMP_LVL | 214647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_P_TXF_EMP_LVL) : 0) | 214747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen GAHBCFG_GLBL_INTR_EN, 21488acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga hsotg->regs + GAHBCFG); 2149308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2150308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 21518acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * If INTknTXFEmpMsk is enabled, it's important to disable ep interrupts 21528acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * when we have no data to transfer. Otherwise we get being flooded by 21538acc8296f94349e7a933dd97e8f5d0ec16d4b4dbRobert Baldyga * interrupts. 2154308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2155308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 215647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(((hsotg->dedicated_fifos) ? DIEPMSK_TXFIFOEMPTY | 215747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_INTKNTXFEMPMSK : 0) | 215847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK | 215947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | 216047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_INTKNEPMISMSK, 216147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DIEPMSK); 2162308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2163308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2164308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * don't need XferCompl, we get that from RXFIFO in slave mode. In 2165308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * DMA mode we may need this. 2166308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 216747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel((using_dma(hsotg) ? (DIEPMSK_XFERCOMPLMSK | 216847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_TIMEOUTMSK) : 0) | 216947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_EPDISBLDMSK | DOEPMSK_AHBERRMSK | 217047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_SETUPMSK, 217147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DOEPMSK); 2172308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 217394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0, hsotg->regs + DAINTMSK); 2174308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2175308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 217694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 217794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 2178308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2179308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* enable in and out endpoint interrupts */ 218047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_OEPINT | GINTSTS_IEPINT); 2181308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2182308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 2183308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * Enable the RXFIFO when in slave mode, as this is how we collect 2184308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * the data. In DMA mode, we get events from the FIFO but also 2185308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * things we cannot process, so do not use it. 2186308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2187308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski if (!using_dma(hsotg)) 218847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_en_gsint(hsotg, GINTSTS_RXFLVL); 2189308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2190308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* Enable interrupts for EP0 in and out */ 2191308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_ctrl_epint(hsotg, 0, 0, 1); 2192308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_ctrl_epint(hsotg, 0, 1, 1); 2193308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 219447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); 2195308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski udelay(10); /* see openiboot */ 219647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __bic32(hsotg->regs + DCTL, DCTL_PWRONPRGDONE); 2197308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 219894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_dbg(hsotg->dev, "DCTL=0x%08x\n", readl(hsotg->regs + DCTL)); 2199308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2200308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* 220194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski * DxEPCTL_USBActEp says RO in manual, but seems to be set by 2202308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski * writing to the EPCTL register.. 2203308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski */ 2204308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2205308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* set to read 1 8byte packet */ 220647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) | 220747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPTSIZ_XFERSIZE(8), hsotg->regs + DOEPTSIZ0); 2208308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2209308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | 221047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_CNAK | DXEPCTL_EPENA | 221147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_USBACTEP, 221294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DOEPCTL0); 2213308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2214308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* enable, but don't activate EP0in */ 2215308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) | 221647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DXEPCTL_USBACTEP, hsotg->regs + DIEPCTL0); 2217308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2218308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski s3c_hsotg_enqueue_setup(hsotg); 2219308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2220308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n", 222194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DIEPCTL0), 222294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DOEPCTL0)); 2223308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2224308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* clear global NAKs */ 222547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGOUTNAK | DCTL_CGNPINNAK, 222694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DCTL); 2227308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2228308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* must be at-least 3ms to allow bus to see disconnect */ 2229308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski mdelay(3); 2230308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2231308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski /* remove the soft-disconnect and let's go */ 223247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __bic32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2233308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski} 2234308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski 2235308d734e9ed86b6713da46b4b9ce9ff017e75c63Lukasz Majewski/** 22365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_irq - handle device interrupt 22375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @irq: The IRQ number triggered 22385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @pw: The pw value when registered the handler. 22395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 22405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic irqreturn_t s3c_hsotg_irq(int irq, void *pw) 22415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 22425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = pw; 22435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int retry_count = 8; 22445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 gintsts; 22455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 gintmsk; 22465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22475ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock(&hsotg->lock); 22485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksirq_retry: 224994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski gintsts = readl(hsotg->regs + GINTSTS); 225094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski gintmsk = readl(hsotg->regs + GINTMSK); 22515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: %08x %08x (%08x) retry %d\n", 22535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, gintsts, gintsts & gintmsk, gintmsk, retry_count); 22545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks gintsts &= gintmsk; 22565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 225747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_OTGINT) { 225894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 otgint = readl(hsotg->regs + GOTGINT); 22595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "OTGInt: %08x\n", otgint); 22615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 226294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(otgint, hsotg->regs + GOTGINT); 22635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 226547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_SESSREQINT) { 22665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: SessReqInt\n", __func__); 226747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_SESSREQINT, hsotg->regs + GINTSTS); 22685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 227047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_ENUMDONE) { 227147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ENUMDONE, hsotg->regs + GINTSTS); 2272a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2273a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_irq_enumdone(hsotg); 22745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 227647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_CONIDSTSCHNG) { 22775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "ConIDStsChg (DSTS=0x%08x, GOTCTL=%08x)\n", 227894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + DSTS), 227994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GOTGCTL)); 22805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 228147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_CONIDSTSCHNG, hsotg->regs + GINTSTS); 22825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 22835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 228447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & (GINTSTS_OEPINT | GINTSTS_IEPINT)) { 228594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 daint = readl(hsotg->regs + DAINT); 22867e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga u32 daintmsk = readl(hsotg->regs + DAINTMSK); 22877e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga u32 daint_out, daint_in; 22885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep; 22895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22907e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga daint &= daintmsk; 229147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen daint_out = daint >> DAINT_OUTEP_SHIFT; 229247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen daint_in = daint & ~(daint_out << DAINT_OUTEP_SHIFT); 22937e8046505c9fda30c3c2a64f1cc84390e2458c54Robert Baldyga 22945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: daint=%08x\n", __func__, daint); 22955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 22965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ep = 0; ep < 15 && daint_out; ep++, daint_out >>= 1) { 22975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (daint_out & 1) 22985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_epint(hsotg, ep, 0); 22995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (ep = 0; ep < 15 && daint_in; ep++, daint_in >>= 1) { 23025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (daint_in & 1) 23035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_epint(hsotg, ep, 1); 23045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 230747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_USBRST) { 230812a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski 230994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski u32 usb_status = readl(hsotg->regs + GOTGCTL); 231012a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski 23115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "%s: USBRst\n", __func__); 23125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "GNPTXSTS=%08x\n", 231394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GNPTXSTS)); 23145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 231547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_USBRST, hsotg->regs + GINTSTS); 2316a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 231794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski if (usb_status & GOTGCTL_BSESVLD) { 231812a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski if (time_after(jiffies, hsotg->last_rst + 231912a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski msecs_to_jiffies(200))) { 23205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 232112a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski kill_all_requests(hsotg, &hsotg->eps[0], 232212a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski -ECONNRESET, true); 23235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 232412a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski s3c_hsotg_core_init(hsotg); 232512a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski hsotg->last_rst = jiffies; 232612a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski } 232712a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski } 23285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* check both FIFOs */ 23315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 233247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_NPTXFEMP) { 23335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "NPTxFEmp\n"); 23345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23358b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 23368b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Disable the interrupt to stop it happening again 23375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * unless one of these endpoint routines decides that 23388b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * it needs re-enabling 23398b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 23405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 234147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_disable_gsint(hsotg, GINTSTS_NPTXFEMP); 23425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_irq_fifoempty(hsotg, false); 23435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 234547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_PTXFEMP) { 23465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "PTxFEmp\n"); 23475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 234894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski /* See note in GINTSTS_NPTxFEmp */ 23495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 235047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen s3c_hsotg_disable_gsint(hsotg, GINTSTS_PTXFEMP); 23515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_irq_fifoempty(hsotg, true); 23525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 235447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_RXFLVL) { 23558b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 23568b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * note, since GINTSTS_RxFLvl doubles as FIFO-not-empty, 23575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * we need to retry s3c_hsotg_handle_rx if this is still 23588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set. 23598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 23605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_handle_rx(hsotg); 23625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 236447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_MODEMIS) { 23655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_warn(hsotg->dev, "warning, mode mismatch triggered\n"); 236647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_MODEMIS, hsotg->regs + GINTSTS); 23675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 236947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_USBSUSP) { 237094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_info(hsotg->dev, "GINTSTS_USBSusp\n"); 237147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_USBSUSP, hsotg->regs + GINTSTS); 23725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, suspend); 23745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 237647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_WKUPINT) { 237794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_info(hsotg->dev, "GINTSTS_WkUpIn\n"); 237847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_WKUPINT, hsotg->regs + GINTSTS); 23795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks call_gadget(hsotg, resume); 23815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 238347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_ERLYSUSP) { 238494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski dev_dbg(hsotg->dev, "GINTSTS_ErlySusp\n"); 238547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GINTSTS_ERLYSUSP, hsotg->regs + GINTSTS); 23865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 23875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 23888b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 23898b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * these next two seem to crop-up occasionally causing the core 23905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to shutdown the USB transfer, so try clearing them and logging 23918b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * the occurrence. 23928b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 23935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 239447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_GOUTNAKEFF) { 23955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "GOUTNakEff triggered\n"); 23965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 239747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGOUTNAK, hsotg->regs + DCTL); 2398a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2399a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_dump(hsotg); 24005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 240247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (gintsts & GINTSTS_GINNAKEFF) { 24035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "GINNakEff triggered\n"); 24045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 240547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_CGNPINNAK, hsotg->regs + DCTL); 2406a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov 2407a3395f0dd016f18273eac8e689e1e81e075e025eAnton Tikhomirov s3c_hsotg_dump(hsotg); 24085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24108b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24118b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we've had fifo events, we should try and go around the 24128b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * loop again to see if there's any point in returning yet. 24138b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 24145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (gintsts & IRQ_RETRY_MASK && --retry_count > 0) 24165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto irq_retry; 24175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24185ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock(&hsotg->lock); 24195ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 24205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return IRQ_HANDLED; 24215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 24225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 24245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_ep_enable - enable the given endpoint 24255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The USB endpint to configure 24265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @desc: The USB endpoint descriptor to configure with. 24275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 24285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This is called from the USB gadget code's usb_ep_enable(). 24298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 24305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_enable(struct usb_ep *ep, 24315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks const struct usb_endpoint_descriptor *desc) 24325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 24335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 24345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 24355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 24365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 24375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 24385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl; 24395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 mps; 24405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in; 244119c190f9e0fe926db28122a804111a7538dc3498Julia Lawall int ret = 0; 24425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, 24445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "%s: ep %s: a 0x%02x, attr 0x%02x, mps 0x%04x, intr %d\n", 24455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, ep->name, desc->bEndpointAddress, desc->bmAttributes, 24465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks desc->wMaxPacketSize, desc->bInterval); 24475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* not to be called for EP0 */ 24495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(index == 0); 24505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir_in = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? 1 : 0; 24525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in != hs_ep->dir_in) { 24535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: direction mismatch!\n", __func__); 24545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 24555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 24565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 245729cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto mps = usb_endpoint_maxp(desc); 24585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* note, we handle this here instead of s3c_hsotg_set_ep_maxpacket */ 24605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 246194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 24625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctrl = readl(hsotg->regs + epctrl_reg); 24635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x from 0x%08x\n", 24655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, epctrl, epctrl_reg); 24665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 246722258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 24685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 246947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl &= ~(DXEPCTL_EPTYPE_MASK | DXEPCTL_MPS_MASK); 247047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_MPS(mps); 24715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24728b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * mark the endpoint as active, otherwise the core may ignore 24748b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * transactions entirely for this endpoint 24758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 247647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_USBACTEP; 24775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 24798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * set the NAK status on the endpoint, otherwise we might try and 24805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * do something with data that we've yet got a request to process 24815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * since the RXFIFO will take data for an endpoint even if the 24825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * size register hasn't been set. 24835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 24845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 248547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SNAK; 24865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* update the endpoint state */ 2488e9edd199d69034fa163c97ef310ca72dca9cf030Robert Baldyga s3c_hsotg_set_ep_maxpacket(hsotg, hs_ep->index, mps); 24895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* default, set to non-periodic */ 24911479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->isochronous = 0; 24925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->periodic = 0; 2493a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga hs_ep->halted = 0; 24941479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->interval = desc->bInterval; 24955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 24964fca54aa5829328a356aea31895b817dacba2861Robert Baldyga if (hs_ep->interval > 1 && hs_ep->mc > 1) 24974fca54aa5829328a356aea31895b817dacba2861Robert Baldyga dev_err(hsotg->dev, "MC > 1 when interval is not 1\n"); 24984fca54aa5829328a356aea31895b817dacba2861Robert Baldyga 24995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { 25005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_ISOC: 250147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_ISO; 250247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SETEVENFR; 25031479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->isochronous = 1; 25041479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga if (dir_in) 25051479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga hs_ep->periodic = 1; 25061479e8411831c2112fa83b44664075e3ceea2533Robert Baldyga break; 25075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_BULK: 250947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_BULK; 25105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 25115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_INT: 25135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (dir_in) { 25148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 25158b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Allocate our TxFNum by simply using the index 25165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * of the endpoint for the moment. We could do 25175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * something better if the host indicates how 25188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * many FIFOs we are expecting to use. 25198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 25205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->periodic = 1; 252247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_TXFNUM(index); 25235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 252547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_INTERRUPT; 25265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 25275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks case USB_ENDPOINT_XFER_CONTROL: 252947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_EPTYPE_CONTROL; 25305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 25315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25338b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 25348b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if the hardware has dedicated fifos, we must give each IN EP 253510aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks * a unique tx-fifo even if it is non-periodic. 253610aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks */ 253710aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks if (dir_in && hsotg->dedicated_fifos) 253847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_TXFNUM(index); 253910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 25405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* for non control endpoints, set PID to D0 */ 25415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (index) 254247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctrl |= DXEPCTL_SETD0PID; 25435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: write DxEPCTL=0x%08x\n", 25455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, epctrl); 25465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctrl, hsotg->regs + epctrl_reg); 25485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: read DxEPCTL=0x%08x\n", 25495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks __func__, readl(hsotg->regs + epctrl_reg)); 25505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* enable the endpoint interrupt */ 25525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1); 25535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 255422258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 255519c190f9e0fe926db28122a804111a7538dc3498Julia Lawall return ret; 25565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 25575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25588b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 25598b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_disable - disable given endpoint 25608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to disable. 25618b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 25625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_disable(struct usb_ep *ep) 25635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 25645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 25655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = hs_ep->parent; 25665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int dir_in = hs_ep->dir_in; 25675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 25685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 25695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctrl_reg; 25705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ctrl; 25715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "%s(ep %p)\n", __func__, ep); 25735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ep == &hsotg->eps[0].ep) { 25755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: called for ep0\n", __func__); 25765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 25775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 25785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 257994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); 25805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25815ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 25825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* terminate all requests with shutdown */ 25835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, false); 25845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ctrl = readl(hsotg->regs + epctrl_reg); 258747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl &= ~DXEPCTL_EPENA; 258847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl &= ~DXEPCTL_USBACTEP; 258947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ctrl |= DXEPCTL_SNAK; 25905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl); 25925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(ctrl, hsotg->regs + epctrl_reg); 25935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 25945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* disable endpoint interrupts */ 25955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0); 25965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 259722258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 25985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 25995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 26005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 26025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * on_list - check request is on the given endpoint 26035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @ep: The endpoint to check. 26045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @test: The request to test if it is on the endpoint. 26058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic bool on_list(struct s3c_hsotg_ep *ep, struct s3c_hsotg_req *test) 26075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req, *treq; 26095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry_safe(req, treq, &ep->queue, queue) { 26115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (req == test) 26125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return true; 26135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 26145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return false; 26165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 26175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 26198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_dequeue - dequeue given endpoint 26208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to dequeue. 26218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @req: The request to be removed from a queue. 26228b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) 26245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *hs_req = our_req(req); 26265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 26275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 26285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 26295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hs->dev, "ep_dequeue(%p,%p)\n", ep, req); 26315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 263222258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hs->lock, flags); 26335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!on_list(hs_ep, hs_req)) { 263522258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 26365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 26375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 26385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_complete_request(hs, hs_ep, hs_req, -ECONNRESET); 264022258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 26415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 26435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 26445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26458b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 26468b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_ep_sethalt - set halt on a given endpoint 26478b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @ep: The endpoint to set halt. 26488b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @value: Set or unset the halt. 26498b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 26505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value) 26515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 26525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep = our_ep(ep); 26535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hs = hs_ep->parent; 26545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = hs_ep->index; 26555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epreg; 26565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 epctl; 26579c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov u32 xfertype; 26585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hs->dev, "%s(ep %p %s, %d)\n", __func__, ep, ep->name, value); 26605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2661c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (index == 0) { 2662c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga if (value) 2663c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga s3c_hsotg_stall_ep0(hs); 2664c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga else 2665c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga dev_warn(hs->dev, 2666c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga "%s: can't clear halt on ep0\n", __func__); 2667c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga return 0; 2668c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga } 2669c9f721b2f3168a0a3b1cc29e92ad1f6f3d62e376Robert Baldyga 26705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* write both IN and OUT control registers */ 26715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 267294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epreg = DIEPCTL(index); 26735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctl = readl(hs->regs + epreg); 26745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26759c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov if (value) { 267647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_STALL + DXEPCTL_SNAK; 267747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (epctl & DXEPCTL_EPENA) 267847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_EPDIS; 26799c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } else { 268047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl &= ~DXEPCTL_STALL; 268147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype = epctl & DXEPCTL_EPTYPE_MASK; 268247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (xfertype == DXEPCTL_EPTYPE_BULK || 268347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype == DXEPCTL_EPTYPE_INTERRUPT) 268447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_SETD0PID; 26859c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 26865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctl, hs->regs + epreg); 26885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 268994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski epreg = DOEPCTL(index); 26905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks epctl = readl(hs->regs + epreg); 26915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 26925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (value) 269347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_STALL; 26949c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov else { 269547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl &= ~DXEPCTL_STALL; 269647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype = epctl & DXEPCTL_EPTYPE_MASK; 269747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen if (xfertype == DXEPCTL_EPTYPE_BULK || 269847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen xfertype == DXEPCTL_EPTYPE_INTERRUPT) 269947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen epctl |= DXEPCTL_SETD0PID; 27009c39ddc60ee9eb70569d1658e512cfa232b9dd16Anton Tikhomirov } 27015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks writel(epctl, hs->regs + epreg); 27035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2704a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga hs_ep->halted = value; 2705a18ed7b036454794dc2d18b92e531c76953d556fRobert Baldyga 27065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 27075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 27085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27095ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski/** 27105ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * s3c_hsotg_ep_sethalt_lock - set halt on a given endpoint with lock held 27115ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * @ep: The endpoint to set halt. 27125ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski * @value: Set or unset the halt. 27135ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski */ 27145ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewskistatic int s3c_hsotg_ep_sethalt_lock(struct usb_ep *ep, int value) 27155ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski{ 27165ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg_ep *hs_ep = our_ep(ep); 27175ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski struct s3c_hsotg *hs = hs_ep->parent; 27185ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski unsigned long flags = 0; 27195ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski int ret = 0; 27205ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 27215ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_lock_irqsave(&hs->lock, flags); 27225ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski ret = s3c_hsotg_ep_sethalt(ep, value); 27235ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski spin_unlock_irqrestore(&hs->lock, flags); 27245ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 27255ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski return ret; 27265ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski} 27275ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski 27285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct usb_ep_ops s3c_hsotg_ep_ops = { 27295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .enable = s3c_hsotg_ep_enable, 27305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .disable = s3c_hsotg_ep_disable, 27315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .alloc_request = s3c_hsotg_ep_alloc_request, 27325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .free_request = s3c_hsotg_ep_free_request, 27335ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski .queue = s3c_hsotg_ep_queue_lock, 27345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .dequeue = s3c_hsotg_ep_dequeue, 27355ad1d3160973c588db806072968d7a2a93cb2a80Lukasz Majewski .set_halt = s3c_hsotg_ep_sethalt_lock, 273625985edcedea6396277003854657b5f3cb31a628Lucas De Marchi /* note, don't believe we have any call for the fifo routines */ 27375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 27385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 27395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 27404118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * s3c_hsotg_phy_enable - enable platform phy dev 27418b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 27424118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * 27434118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * A wrapper for platform code responsible for controlling 27444118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * low-level USB code 27454118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski */ 27464118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewskistatic void s3c_hsotg_phy_enable(struct s3c_hsotg *hsotg) 27474118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski{ 27484118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski struct platform_device *pdev = to_platform_device(hsotg->dev); 27494118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 27504118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski dev_dbg(hsotg->dev, "pdev 0x%p\n", pdev); 2751b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri 275274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) { 275374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_init(hsotg->phy); 275474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_power_on(hsotg->phy); 275574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else if (hsotg->uphy) 275674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter usb_phy_init(hsotg->uphy); 2757b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri else if (hsotg->plat->phy_init) 27584118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski hsotg->plat->phy_init(pdev, hsotg->plat->phy_type); 27594118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski} 27604118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 27614118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski/** 27624118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * s3c_hsotg_phy_disable - disable platform phy dev 27638b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 27644118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * 27654118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * A wrapper for platform code responsible for controlling 27664118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski * low-level USB code 27674118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski */ 27684118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewskistatic void s3c_hsotg_phy_disable(struct s3c_hsotg *hsotg) 27694118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski{ 27704118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski struct platform_device *pdev = to_platform_device(hsotg->dev); 27714118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 277274084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) { 277374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_power_off(hsotg->phy); 277474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_exit(hsotg->phy); 277574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else if (hsotg->uphy) 277674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter usb_phy_shutdown(hsotg->uphy); 2777b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri else if (hsotg->plat->phy_exit) 27784118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski hsotg->plat->phy_exit(pdev, hsotg->plat->phy_type); 27794118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski} 27804118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski 27818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 27828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_init - initalize the usb core 27838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @hsotg: The driver state 27848b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2785b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewskistatic void s3c_hsotg_init(struct s3c_hsotg *hsotg) 2786b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski{ 2787b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* unmask subset of endpoint interrupts */ 2788b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 278947a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK | 279047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK, 279147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DIEPMSK); 2792b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 279347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DOEPMSK_SETUPMSK | DOEPMSK_AHBERRMSK | 279447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen DOEPMSK_EPDISBLDMSK | DOEPMSK_XFERCOMPLMSK, 279547a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->regs + DOEPMSK); 2796b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 279794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(0, hsotg->regs + DAINTMSK); 2798b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2799b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* Be in disconnected state until gadget is registered */ 280047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen __orr32(hsotg->regs + DCTL, DCTL_SFTDISCON); 2801b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2802b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (0) { 2803b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* post global nak until we're ready */ 280447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(DCTL_SGNPINNAK | DCTL_SGOUTNAK, 280594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + DCTL); 2806b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 2807b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2808b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* setup fifos */ 2809b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2810b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_dbg(hsotg->dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", 281194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GRXFSIZ), 281294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(hsotg->regs + GNPTXFSIZ)); 2813b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2814b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski s3c_hsotg_init_fifo(hsotg); 2815b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 2816b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* set the PLL on, remove the HNP/SRP and set the PHY */ 281747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(GUSBCFG_PHYIF16 | GUSBCFG_TOUTCAL(7) | (0x5 << 10), 281894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GUSBCFG); 2819b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 282047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen writel(using_dma(hsotg) ? GAHBCFG_DMA_EN : 0x0, 282194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski hsotg->regs + GAHBCFG); 2822b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski} 2823b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 28248b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 28258b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_udc_start - prepare the udc for work 28268b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 28278b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @driver: The usb gadget driver 28288b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 28298b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Perform initialization to prepare udc device and driver 28308b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * to work. 28318b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2832f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewskistatic int s3c_hsotg_udc_start(struct usb_gadget *gadget, 2833f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski struct usb_gadget_driver *driver) 28345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2835f99b2bfebe8984db2b6e4c07e2bedc91977d27d8Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 28365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 28375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hsotg) { 2839a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek pr_err("%s: called with no device\n", __func__); 28405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENODEV; 28415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!driver) { 28445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: no driver\n", __func__); 28455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 28465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28487177aed44f515d949f587170e0e177ce17e74793Michal Nazarewicz if (driver->max_speed < USB_SPEED_FULL) 28495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: bad speed\n", __func__); 28505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2851f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (!driver->setup) { 28525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: missing entry points\n", __func__); 28535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -EINVAL; 28545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks WARN_ON(hsotg->driver); 28575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks driver->driver.bus = NULL; 28595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->driver = driver; 28607d7b22928b900bcb0f8885a95846e5125a757e76Alexandre Pereira da Silva hsotg->gadget.dev.of_node = hsotg->dev->of_node; 28615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_UNKNOWN; 28625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2863f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 2864f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski hsotg->supplies); 28655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret) { 2866f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski dev_err(hsotg->dev, "failed to enable supplies: %d\n", ret); 28675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks goto err; 28685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 28695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 287012a1f4dc0dfe4c72e565dc02d6a1c021f3f98b61Lukasz Majewski hsotg->last_rst = jiffies; 28715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(hsotg->dev, "bound driver %s\n", driver->driver.name); 28725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 28735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dookserr: 28755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->driver = NULL; 28765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 28775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 28785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 28808b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_udc_stop - stop the udc 28818b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 28828b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @driver: The usb gadget driver 28838b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 28848b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Stop udc hw block and stay tunned for future transmissions 28858b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 2886f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewskistatic int s3c_hsotg_udc_stop(struct usb_gadget *gadget, 2887f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski struct usb_gadget_driver *driver) 28885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 2889f99b2bfebe8984db2b6e4c07e2bedc91977d27d8Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 28902b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski unsigned long flags = 0; 28915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ep; 28925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (!hsotg) 28945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENODEV; 28955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 28965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* all endpoints should be shutdown */ 2897b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (ep = 0; ep < hsotg->num_of_eps; ep++) 28985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); 28995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29002b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 29012b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski 2902f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 29035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2904c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski if (!driver) 2905c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski hsotg->driver = NULL; 2906c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski 29075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.speed = USB_SPEED_UNKNOWN; 29085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29092b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 29102b19a52cc8a31ede990323d46a7faeeeba76bb8fLukasz Majewski 2911c8c10253d8706be7ce8bc8197e385cb837eed5a0Marek Szyprowski regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); 29125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 29145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 29155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29168b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 29178b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_gadget_getframe - read the frame number 29188b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @gadget: The usb gadget state 29198b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * 29208b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Read the {micro} frame number 29218b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 29225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int s3c_hsotg_gadget_getframe(struct usb_gadget *gadget) 29235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 29245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return s3c_hsotg_read_frameno(to_hsotg(gadget)); 29255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 29265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 2927a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski/** 2928a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * s3c_hsotg_pullup - connect/disconnect the USB PHY 2929a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * @gadget: The usb gadget state 2930a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * @is_on: Current state of the USB PHY 2931a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * 2932a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski * Connect/Disconnect the USB PHY pullup 2933a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski */ 2934a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewskistatic int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on) 2935a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski{ 2936a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski struct s3c_hsotg *hsotg = to_hsotg(gadget); 2937a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski unsigned long flags = 0; 2938a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2939a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski dev_dbg(hsotg->dev, "%s: is_in: %d\n", __func__, is_on); 2940a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2941a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 2942a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski if (is_on) { 2943a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_phy_enable(hsotg); 2944a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_core_init(hsotg); 2945a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski } else { 2946a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_disconnect(hsotg); 2947a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 2948a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski } 2949a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2950a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski hsotg->gadget.speed = USB_SPEED_UNKNOWN; 2951a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 2952a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2953a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski return 0; 2954a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski} 2955a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski 2956eeef45876631a446eaedce16675f4ff344e16cf0Felipe Balbistatic const struct usb_gadget_ops s3c_hsotg_gadget_ops = { 29575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .get_frame = s3c_hsotg_gadget_getframe, 2958f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski .udc_start = s3c_hsotg_udc_start, 2959f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski .udc_stop = s3c_hsotg_udc_stop, 2960a188b6897e3dca82dd6f5beceabf1fc62b9786d9Lukasz Majewski .pullup = s3c_hsotg_pullup, 29615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 29625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 29645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_initep - initialise a single endpoint 29655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The device state. 29665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hs_ep: The endpoint to be initialised. 29675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @epnum: The endpoint number 29685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 29695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Initialise the given endpoint (as part of the probe and device state 29705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * creation) to give to the gadget driver. Setup the endpoint name, any 29715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * direction information and other state that may be required. 29725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 297341ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic void s3c_hsotg_initep(struct s3c_hsotg *hsotg, 29745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *hs_ep, 29755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum) 29765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 29775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 ptxfifo; 29785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks char *dir; 29795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum == 0) 29815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = ""; 29825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks else if ((epnum % 2) == 0) { 29835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = "out"; 29845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } else { 29855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dir = "in"; 29865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->dir_in = 1; 29875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 29885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->index = epnum; 29905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks snprintf(hs_ep->name, sizeof(hs_ep->name), "ep%d%s", epnum, dir); 29925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_ep->queue); 29945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks INIT_LIST_HEAD(&hs_ep->ep.ep_list); 29955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 29965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* add to the list of endpoints known by the gadget driver */ 29975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (epnum) 29985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_add_tail(&hs_ep->ep.ep_list, &hsotg->gadget.ep_list); 29995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->parent = hsotg; 30015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->ep.name = hs_ep->name; 3002e117e742d310683b410951faeab4b13b6c3c609fRobert Baldyga usb_ep_set_maxpacket_limit(&hs_ep->ep, epnum ? 1024 : EP0_MPS_LIMIT); 30035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hs_ep->ep.ops = &s3c_hsotg_ep_ops; 30045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30058b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 30068b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * Read the FIFO size for the Periodic TX FIFO, even if we're 30075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * an OUT endpoint, we may as well do this if in future the 30085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * code is changed to make each endpoint's direction changeable. 30095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 30105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 301147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen ptxfifo = readl(hsotg->regs + DPTXFSIZN(epnum)); 301247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hs_ep->fifo_size = FIFOSIZE_DEPTH_GET(ptxfifo) * 4; 30135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski /* 30158b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * if we're using dma, we need to set the next-endpoint pointer 30165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to be something valid. 30175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 30185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (using_dma(hsotg)) { 302047a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen u32 next = DXEPCTL_NEXTEP((epnum + 1) % 15); 302194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(next, hsotg->regs + DIEPCTL(epnum)); 302294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski writel(next, hsotg->regs + DOEPCTL(epnum)); 30235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 30255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3026b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski/** 3027b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * s3c_hsotg_hw_cfg - read HW configuration registers 3028b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * @param: The device state 3029b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * 3030b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski * Read the USB core HW configuration registers 3031b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski */ 3032b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewskistatic void s3c_hsotg_hw_cfg(struct s3c_hsotg *hsotg) 30335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3034b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski u32 cfg2, cfg4; 3035b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* check hardware configuration */ 30365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3037b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski cfg2 = readl(hsotg->regs + 0x48); 3038b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->num_of_eps = (cfg2 >> 10) & 0xF; 303910aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 3040b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_info(hsotg->dev, "EPs:%d\n", hsotg->num_of_eps); 304110aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 304210aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks cfg4 = readl(hsotg->regs + 0x50); 304310aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks hsotg->dedicated_fifos = (cfg4 >> 25) & 1; 304410aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks 304510aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks dev_info(hsotg->dev, "%s fifos\n", 304610aebc772a10c95e30dff0779cb0f879b8f1554fBen Dooks hsotg->dedicated_fifos ? "dedicated" : "shared"); 30475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 30485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30498b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 30508b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_dump - dump state of the udc 30518b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @param: The device state 30528b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 30535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic void s3c_hsotg_dump(struct s3c_hsotg *hsotg) 30545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 305583a018045659ee2cc9b1390ddb8b2a247d269bc4Mark Brown#ifdef DEBUG 30565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct device *dev = hsotg->dev; 30575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 30585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 val; 30595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 30605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DCFG=0x%08x, DCTL=0x%08x, DIEPMSK=%08x\n", 306294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCFG), readl(regs + DCTL), 306394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPMSK)); 30645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "GAHBCFG=0x%08x, 0x44=0x%08x\n", 306694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GAHBCFG), readl(regs + 0x44)); 30675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "GRXFSIZ=0x%08x, GNPTXFSIZ=0x%08x\n", 306994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GRXFSIZ), readl(regs + GNPTXFSIZ)); 30705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* show periodic fifo settings */ 30725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 1; idx <= 15; idx++) { 307447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val = readl(regs + DPTXFSIZN(idx)); 30755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DPTx[%d] FSize=%d, StAddr=0x%08x\n", idx, 307647a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 307747a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_STARTADDR_MASK); 30785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 0; idx < 15; idx++) { 30815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, 30825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "ep%d-in: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", idx, 308394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPCTL(idx)), 308494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPTSIZ(idx)), 308594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPDMA(idx))); 30865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 308794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(regs + DOEPCTL(idx)); 30885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, 30895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks "ep%d-out: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", 309094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski idx, readl(regs + DOEPCTL(idx)), 309194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPTSIZ(idx)), 309294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPDMA(idx))); 30935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 30955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 30965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "DVBUSDIS=0x%08x, DVBUSPULSE=%08x\n", 309794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DVBUSDIS), readl(regs + DVBUSPULSE)); 309883a018045659ee2cc9b1390ddb8b2a247d269bc4Mark Brown#endif 30995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 31005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 31025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * state_show - debugfs: show overall driver and device state. 31035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq file to write to. 31045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 31055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 31065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This debugfs entry shows the overall state of the hardware and 31075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * some general information about each of the endpoints available 31085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * to the system. 31095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks */ 31105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int state_show(struct seq_file *seq, void *v) 31115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = seq->private; 31135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 31145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 31155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n", 311794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCFG), 311894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DCTL), 311994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DSTS)); 31205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n", 312294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPMSK), readl(regs + DOEPMSK)); 31235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n", 312594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GINTMSK), 312694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GINTSTS)); 31275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n", 312994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DAINTMSK), 313094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DAINT)); 31315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n", 313394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GNPTXSTS), 313494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + GRXSTSR)); 31355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3136a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\nEndpoint status:\n"); 31375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 0; idx < 15; idx++) { 31395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 in, out; 31405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 314194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski in = readl(regs + DIEPCTL(idx)); 314294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski out = readl(regs + DOEPCTL(idx)); 31435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x", 31455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks idx, in, out); 31465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 314794cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski in = readl(regs + DIEPTSIZ(idx)); 314894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski out = readl(regs + DOEPTSIZ(idx)); 31495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x", 31515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks in, out); 31525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3153a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\n"); 31545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 31555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 31575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 31585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int state_open(struct inode *inode, struct file *file) 31605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, state_show, inode->i_private); 31625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 31635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations state_fops = { 31655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 31665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = state_open, 31675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 31685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 31695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 31705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 31715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 31735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * fifo_show - debugfs: show the fifo information 31745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq_file to write data to. 31755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 31765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 31775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Show the FIFO information for the overall fifo and all the 31785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * periodic transmission FIFOs. 31798b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 31805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int fifo_show(struct seq_file *seq, void *v) 31815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 31825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = seq->private; 31835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 31845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks u32 val; 31855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int idx; 31865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3187a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "Non-periodic FIFOs:\n"); 318894cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski seq_printf(seq, "RXFIFO: Size %d\n", readl(regs + GRXFSIZ)); 31895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 319094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski val = readl(regs + GNPTXFSIZ); 31915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n", 319247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 319347a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_DEPTH_MASK); 31945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3195a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\nPeriodic TXFIFOs:\n"); 31965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 31975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks for (idx = 1; idx <= 15; idx++) { 319847a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val = readl(regs + DPTXFSIZN(idx)); 31995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx, 320147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val >> FIFOSIZE_DEPTH_SHIFT, 320247a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen val & FIFOSIZE_STARTADDR_MASK); 32035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 32065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int fifo_open(struct inode *inode, struct file *file) 32095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, fifo_show, inode->i_private); 32115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations fifo_fops = { 32145b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 32155b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = fifo_open, 32165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 32175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 32185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 32195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 32205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const char *decode_direction(int is_in) 32235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return is_in ? "in" : "out"; 32255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 32285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * ep_show - debugfs: show the state of an endpoint. 32295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @seq: The seq_file to write data to. 32305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @v: Unused parameter. 32315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 32325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * This debugfs entry shows the state of the given endpoint (one is 32335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * registered for each available). 32348b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 32355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int ep_show(struct seq_file *seq, void *v) 32365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = seq->private; 32385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = ep->parent; 32395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_req *req; 32405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks void __iomem *regs = hsotg->regs; 32415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int index = ep->index; 32425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int show_limit = 15; 32435b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned long flags; 32445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n", 32465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->index, ep->ep.name, decode_direction(ep->dir_in)); 32475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* first show the register state */ 32495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n", 325194cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPCTL(index)), 325294cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPCTL(index))); 32535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n", 325594cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPDMA(index)), 325694cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPDMA(index))); 32575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n", 325994cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPINT(index)), 326094cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPINT(index))); 32615b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n", 326394cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DIEPTSIZ(index)), 326494cb8fd637d7ec4a6685365c3287050969389cbeLukasz Majewski readl(regs + DOEPTSIZ(index))); 32655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3266a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "\n"); 32675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "mps %d\n", ep->ep.maxpacket); 32685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "total_data=%ld\n", ep->total_data); 32695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "request list (%p,%p):\n", 32715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->queue.next, ep->queue.prev); 32725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 327322258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_irqsave(&hsotg->lock, flags); 32745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks list_for_each_entry(req, &ep->queue, queue) { 32765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (--show_limit < 0) { 3277a023da331c1d2a26669161031fe6e2c8e0a2009ePavel Machek seq_puts(seq, "not showing more requests...\n"); 32785b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks break; 32795b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "%c req %p: %d bytes @%p, ", 32825b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req == ep->req ? '*' : ' ', 32835b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req, req->req.length, req->req.buf); 32845b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks seq_printf(seq, "%d done, res %d\n", 32855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks req->req.actual, req->req.status); 32865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 32875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 328822258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_unlock_irqrestore(&hsotg->lock, flags); 32895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 32915b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic int ep_open(struct inode *inode, struct file *file) 32945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 32955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return single_open(file, ep_show, inode->i_private); 32965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 32975b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 32985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic const struct file_operations ep_fops = { 32995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 33005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .open = ep_open, 33015b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .read = seq_read, 33025b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .llseek = seq_lseek, 33035b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .release = single_release, 33045b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 33055b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33065b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 33075b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_create_debug - create debugfs directory and files 33085b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 33095b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 33105b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Create the debugfs files to allow the user to get information 33115b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * about the state of the system. The directory name is created 33125b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * with the same name as the device itself, in case we end up 33135b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * with multiple blocks in future systems. 33148b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 331541ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic void s3c_hsotg_create_debug(struct s3c_hsotg *hsotg) 33165b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33175b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct dentry *root; 33185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned epidx; 33195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33205b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks root = debugfs_create_dir(dev_name(hsotg->dev), NULL); 33215b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_root = root; 33225b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(root)) { 33235b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "cannot create debug root\n"); 33245b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return; 33255b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* create general state file */ 33285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_file = debugfs_create_file("state", 0444, root, 33305b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg, &state_fops); 33315b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33325b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(hsotg->debug_file)) 33335b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to create state\n", __func__); 33345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->debug_fifo = debugfs_create_file("fifo", 0444, root, 33365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg, &fifo_fops); 33375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(hsotg->debug_fifo)) 33395b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__); 33405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* create one file for each endpoint */ 33425b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3343b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 33445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; 33455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33465b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->debugfs = debugfs_create_file(ep->name, 0444, 33475b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks root, ep, &ep_fops); 33485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (IS_ERR(ep->debugfs)) 33505b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(hsotg->dev, "failed to create %s debug file\n", 33515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ep->name); 33525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks/** 33565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * s3c_hsotg_delete_debug - cleanup debugfs entries 33575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * @hsotg: The driver state 33585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * 33595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks * Cleanup (remove) the debugfs files for use on module exit. 33608b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3361fb4e98ab63433c4d3a1588ea91c73f1cd7ebaa00Bill Pembertonstatic void s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg) 33625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 33635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks unsigned epidx; 33645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3365b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) { 33665b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg_ep *ep = &hsotg->eps[epidx]; 33675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(ep->debugfs); 33685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 33695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_file); 33715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_fifo); 33725b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks debugfs_remove(hsotg->debug_root); 33735b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 33745b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 33758b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 33768b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_probe - probe function for hsotg driver 33778b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @pdev: The platform information for the driver 33788b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3379f026a52d4309e1e08752a8bd41ac74aeea815686Lukasz Majewski 338041ac7b3ab7fe1d6175839947a877fdf95cbd2211Bill Pembertonstatic int s3c_hsotg_probe(struct platform_device *pdev) 33815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 3382e01ee9f509a927158f670408b41127d4166db1c7Jingoo Han struct s3c_hsotg_plat *plat = dev_get_platdata(&pdev->dev); 338374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct phy *phy; 338474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter struct usb_phy *uphy; 33855b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct device *dev = &pdev->dev; 3386b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski struct s3c_hsotg_ep *eps; 33875b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg; 33885b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct resource *res; 33895b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int epnum; 33905b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks int ret; 3391fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski int i; 33925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3393338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat hsotg = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsotg), GFP_KERNEL); 3394d04477d84be0bcac96452bdb824ff6eec4b49c96Jingoo Han if (!hsotg) 33955b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return -ENOMEM; 33965b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 339774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter /* 339874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter * Attempt to find a generic PHY, then look for an old style 339974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter * USB PHY, finally fall back to pdata 340074084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter */ 340174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy = devm_phy_get(&pdev->dev, "usb2-phy"); 3402f4f5ba5e7d9e087f044fe87f5a5421761274aa48Felipe Balbi if (IS_ERR(phy)) { 340374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter uphy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); 340474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (IS_ERR(uphy)) { 340574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter /* Fallback for pdata */ 340674084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter plat = dev_get_platdata(&pdev->dev); 340774084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (!plat) { 340874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter dev_err(&pdev->dev, 340974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter "no platform data or transceiver defined\n"); 341074084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter return -EPROBE_DEFER; 341174084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } 3412b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri hsotg->plat = plat; 341374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else 341474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter hsotg->uphy = uphy; 341574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter } else 3416b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri hsotg->phy = phy; 3417b2e587dbb7a7554b56d2f38e284ad975d2f00181Praveen Paneri 34185b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->dev = dev; 34195b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 342084749c6dcb694a7aa793221ea8cc3d70bd46d466Sachin Kamat hsotg->clk = devm_clk_get(&pdev->dev, "otg"); 342131ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski if (IS_ERR(hsotg->clk)) { 342231ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski dev_err(dev, "cannot get otg clock\n"); 3423338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat return PTR_ERR(hsotg->clk); 342431ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski } 342531ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 34265b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks platform_set_drvdata(pdev, hsotg); 34275b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34285b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 34295b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3430148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding hsotg->regs = devm_ioremap_resource(&pdev->dev, res); 3431148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding if (IS_ERR(hsotg->regs)) { 3432148e11349b0c9c7199fd3096254bd3ea16d59a05Thierry Reding ret = PTR_ERR(hsotg->regs); 3433338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 34345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34365b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks ret = platform_get_irq(pdev, 0); 34375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 34385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(dev, "cannot find IRQ\n"); 3439338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 34405b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34415b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 344222258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski spin_lock_init(&hsotg->lock); 344322258f4906aa87e0c0debcad22cb292453e2ebfbLukasz Majewski 34445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->irq = ret; 34455b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3446338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat ret = devm_request_irq(&pdev->dev, hsotg->irq, s3c_hsotg_irq, 0, 3447338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat dev_name(dev), hsotg); 34485b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks if (ret < 0) { 34495b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_err(dev, "cannot claim IRQ\n"); 3450338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 34515b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks } 34525b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34535b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks dev_info(dev, "regs %p, irq %d\n", hsotg->regs, hsotg->irq); 34545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3455d327ab5b6d660d6fe22b073b743fde1668e593bbMichal Nazarewicz hsotg->gadget.max_speed = USB_SPEED_HIGH; 34565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.ops = &s3c_hsotg_gadget_ops; 34575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks hsotg->gadget.name = dev_name(dev); 34585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* reset the system */ 34605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 346104b4a0fce530eab728e27e24b5a8d6192c6f70d9Lukasz Majewski clk_prepare_enable(hsotg->clk); 346231ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 3463fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski /* regulators */ 3464fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3465fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski for (i = 0; i < ARRAY_SIZE(hsotg->supplies); i++) 3466fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies[i].supply = s3c_hsotg_supply_names[i]; 3467fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3468cd76213eb57c505d3df6fa3134a6b3bb5394a90cSachin Kamat ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(hsotg->supplies), 3469fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies); 3470fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski if (ret) { 3471fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski dev_err(dev, "failed to request supplies: %d\n", ret); 3472338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat goto err_clk; 3473fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski } 3474fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3475fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 3476fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski hsotg->supplies); 3477fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3478fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski if (ret) { 3479fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski dev_err(hsotg->dev, "failed to enable supplies: %d\n", ret); 3480fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski goto err_supplies; 3481fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski } 3482fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewski 3483f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter /* Set default UTMI width */ 348447a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->phyif = GUSBCFG_PHYIF16; 3485f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter 3486f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter /* 3487f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter * If using the generic PHY framework, check if the PHY bus 3488f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter * width is 8-bit and set the phyif appropriately. 3489f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter */ 3490f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter if (hsotg->phy && (phy_get_bus_width(phy) == 8)) 349147a1685f139271de401212bd69d17374ca5a5270Dinh Nguyen hsotg->phyif = GUSBCFG_PHYIF8; 3492f7e504c72d93d3257969cb1ca9b93116e7dac8b5Matt Porter 349374084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) 349474084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_init(hsotg->phy); 349574084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter 34964118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski /* usb phy enable */ 34974118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_enable(hsotg); 34985b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 34995b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_corereset(hsotg); 35005b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_init(hsotg); 3501b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski s3c_hsotg_hw_cfg(hsotg); 3502b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3503b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* hsotg->num_of_eps holds number of EPs other than ep0 */ 3504b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3505b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (hsotg->num_of_eps == 0) { 3506b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_err(dev, "wrong number of EPs (zero)\n"); 3507dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -EINVAL; 3508b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_supplies; 3509b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 3510b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3511b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski eps = kcalloc(hsotg->num_of_eps + 1, sizeof(struct s3c_hsotg_ep), 3512b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski GFP_KERNEL); 3513b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (!eps) { 3514dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -ENOMEM; 3515b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_supplies; 3516b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 3517b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3518b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->eps = eps; 3519b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3520b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* setup endpoint information */ 3521b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3522b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski INIT_LIST_HEAD(&hsotg->gadget.ep_list); 3523b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->gadget.ep0 = &hsotg->eps[0].ep; 3524b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3525b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski /* allocate EP0 request */ 3526b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski 3527b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps[0].ep, 3528b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski GFP_KERNEL); 3529b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski if (!hsotg->ctrl_req) { 3530b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski dev_err(dev, "failed to allocate ctrl req\n"); 3531dfdda5a0fa3f458e9807da1d1a1d2c56076d43e5Julia Lawall ret = -ENOMEM; 3532b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_ep_mem; 3533b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski } 35345b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35355b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks /* initialise the endpoints now the core has been initialised */ 3536b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski for (epnum = 0; epnum < hsotg->num_of_eps; epnum++) 35375b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_initep(hsotg, &hsotg->eps[epnum], epnum); 35385b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3539f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski /* disable power and clock */ 3540f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 3541f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), 3542f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski hsotg->supplies); 3543f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (ret) { 3544f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski dev_err(hsotg->dev, "failed to disable supplies: %d\n", ret); 3545f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski goto err_ep_mem; 3546f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski } 3547f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 3548f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 3549f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski 35500f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior ret = usb_add_gadget_udc(&pdev->dev, &hsotg->gadget); 35510f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior if (ret) 3552b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski goto err_ep_mem; 35530f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 35545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_create_debug(hsotg); 35555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_dump(hsotg); 35575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35585b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 35595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35601d144c6732f6badd4be7a1383a4ae2adcc3f9386Lukasz Majewskierr_ep_mem: 3561b3f489b2b658e530f5cdefe4d38c60cf13453e43Lukasz Majewski kfree(eps); 3562fc9a731ed0ef7138432f0f14981710aea8e83320Lukasz Majewskierr_supplies: 35634118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 356431ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowskierr_clk: 35651d144c6732f6badd4be7a1383a4ae2adcc3f9386Lukasz Majewski clk_disable_unprepare(hsotg->clk); 3566338edabcd879320f0f86cc701161b95277be6b5dSachin Kamat 35675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return ret; 35685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 35695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35708b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski/** 35718b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * s3c_hsotg_remove - remove function for hsotg driver 35728b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski * @pdev: The platform information for the driver 35738b9bc4608eefebd9958911017caac8d87e2e8b3cLukasz Majewski */ 3574fb4e98ab63433c4d3a1588ea91c73f1cd7ebaa00Bill Pembertonstatic int s3c_hsotg_remove(struct platform_device *pdev) 35755b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks{ 35765b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 35775b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35780f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior usb_del_gadget_udc(&hsotg->gadget); 35790f91349b89f37dfad7b77f7829a105b6a0f526ecSebastian Andrzej Siewior 35805b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks s3c_hsotg_delete_debug(hsotg); 35815b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3582f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski if (hsotg->driver) { 3583f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski /* should have been done already by driver model core */ 3584f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski usb_gadget_unregister_driver(hsotg->driver); 3585f65f0f109878d795854a0a879d5029c7ea560867Lukasz Majewski } 35865b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 35874118878697c76e5444a1d5db9c399ca5d923b0a8Lukasz Majewski s3c_hsotg_phy_disable(hsotg); 358874084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter if (hsotg->phy) 358974084844e8e7d5424e8b512b0ee6d46c72087b56Matt Porter phy_exit(hsotg->phy); 359004b4a0fce530eab728e27e24b5a8d6192c6f70d9Lukasz Majewski clk_disable_unprepare(hsotg->clk); 359131ee04de7e670de4199572595cce4aaa7f7f6351Marek Szyprowski 35925b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks return 0; 35935b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks} 35945b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3595b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowskistatic int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state) 3596b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski{ 3597b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 3598b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski unsigned long flags; 3599b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ret = 0; 3600b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3601b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) 3602b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski dev_info(hsotg->dev, "suspending usb gadget %s\n", 3603b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->driver->driver.name); 3604b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3605b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_lock_irqsave(&hsotg->lock, flags); 3606b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_disconnect(hsotg); 3607b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_phy_disable(hsotg); 3608b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->gadget.speed = USB_SPEED_UNKNOWN; 3609b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_unlock_irqrestore(&hsotg->lock, flags); 3610b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3611b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) { 3612b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ep; 3613b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski for (ep = 0; ep < hsotg->num_of_eps; ep++) 3614b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); 3615b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3616b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), 3617b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->supplies); 3618b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski } 3619b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3620b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski return ret; 3621b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski} 3622b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3623b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowskistatic int s3c_hsotg_resume(struct platform_device *pdev) 3624b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski{ 3625b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); 3626b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski unsigned long flags; 3627b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski int ret = 0; 3628b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3629b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski if (hsotg->driver) { 3630b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski dev_info(hsotg->dev, "resuming usb gadget %s\n", 3631b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->driver->driver.name); 3632b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), 3633b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->supplies); 3634b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski } 3635b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3636b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_lock_irqsave(&hsotg->lock, flags); 3637b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski hsotg->last_rst = jiffies; 3638b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_phy_enable(hsotg); 3639b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski s3c_hsotg_core_init(hsotg); 3640b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski spin_unlock_irqrestore(&hsotg->lock, flags); 3641b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski 3642b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski return ret; 3643b83e333a4d03b73eb5ea7fc1cb86683c2575b237Marek Szyprowski} 36445b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3645c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#ifdef CONFIG_OF 3646c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figastatic const struct of_device_id s3c_hsotg_of_ids[] = { 3647c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa { .compatible = "samsung,s3c6400-hsotg", }, 36480d33d825632737c8d3353c80c8701252682bcb03Matt Porter { .compatible = "snps,dwc2", }, 3649c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa { /* sentinel */ } 3650c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa}; 3651c50f056c360673ef196b49bfa161d841f0fbe92eTomasz FigaMODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids); 3652c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa#endif 3653c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa 36545b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooksstatic struct platform_driver s3c_hsotg_driver = { 36555b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .driver = { 36565b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .name = "s3c-hsotg", 36575b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .owner = THIS_MODULE, 3658c50f056c360673ef196b49bfa161d841f0fbe92eTomasz Figa .of_match_table = of_match_ptr(s3c_hsotg_of_ids), 36595b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks }, 36605b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .probe = s3c_hsotg_probe, 36617690417db5085f0de03aa70b8ca01b0118e8a1b4Bill Pemberton .remove = s3c_hsotg_remove, 36625b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .suspend = s3c_hsotg_suspend, 36635b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks .resume = s3c_hsotg_resume, 36645b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks}; 36655b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 3666cc27c96c2bee93068bfc60ea6b09611d88cef429Axel Linmodule_platform_driver(s3c_hsotg_driver); 36675b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben Dooks 36685b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_DESCRIPTION("Samsung S3C USB High-speed/OtG device"); 36695b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>"); 36705b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_LICENSE("GPL"); 36715b7d70c6dbf2db786395cbd21750a1a4ce222f84Ben DooksMODULE_ALIAS("platform:s3c-hsotg"); 3672