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Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (97 commits)
  USB: qcserial: add device id for HP devices
  USB: isp1760: Add a delay before reading the SKIPMAP registers in isp1760-hcd.c
  USB: allow malformed LANGID descriptors
  USB: pxa27x_udc: typo fixes and code cleanups
  USB: gadget: gadget zero uses new suspend/resume hooks
  USB: gadget: composite device-level suspend/resume hooks
  USB: r8a66597-hcd: suspend/resume support
  USB: more u32 conversion after transfer_buffer_length and actual_length
  USB: Fix cp2101 USB serial device driver termios functions for console use
  USB: CP2101 New Device ID
  USB: ipaq: handle 4 endpoint devices
  USB: S3C: Move usb-control.h to platform include
  USB: ohci-hcd: Add ARCH_S3C24XX to the ohci-s3c2410.c glue
  USB: pedantic: spelling correction in comment for ch9.h
  USB: host: fix sparse warning: Using plain integer as NULL pointer
  USB: ohci-s3c2410: fix name of bus clock
  USB: ohci-s3c2410: remove <mach/hardware.h> include
  USB: serial: rename cp2101 driver to cp210x
  USB: CP2101 Reduce Error Logging
  USB: CP2101 Support AN205 baud rates
  ...
This commit is contained in:
Linus Torvalds
2009-03-26 11:17:39 -07:00
parent 0c93ea4064 fd8345f8de
commit 61a091827e
157 changed files with 5228 additions and 3829 deletions
Download Patch File Download Diff File Expand all files Collapse all files

244
drivers/usb/gadget/imx_udc.c
View File

@@ -1,7 +1,7 @@
/*
* driver/usb/gadget/imx_udc.c
*
* Copyright (C) 2005 Mike Lee(eemike@gmail.com)
* Copyright (C) 2005 Mike Lee <eemike@gmail.com>
* Copyright (C) 2008 Darius Augulis <augulis.darius@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
@@ -28,6 +28,7 @@
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@@ -51,7 +52,8 @@ void ep0_chg_stat(const char *label, struct imx_udc_struct *imx_usb,
void imx_udc_enable(struct imx_udc_struct *imx_usb)
{
int temp = __raw_readl(imx_usb->base + USB_CTRL);
__raw_writel(temp | CTRL_FE_ENA | CTRL_AFE_ENA, imx_usb->base + USB_CTRL);
__raw_writel(temp | CTRL_FE_ENA | CTRL_AFE_ENA,
imx_usb->base + USB_CTRL);
imx_usb->gadget.speed = USB_SPEED_FULL;
}
@@ -126,7 +128,8 @@ void imx_udc_config(struct imx_udc_struct *imx_usb)
for (j = 0; j < 5; j++) {
__raw_writeb(ep_conf[j],
imx_usb->base + USB_DDAT);
do {} while (__raw_readl(imx_usb->base + USB_DADR)
do {} while (__raw_readl(imx_usb->base
+ USB_DADR)
& DADR_BSY);
}
}
@@ -183,7 +186,8 @@ void imx_udc_init_ep(struct imx_udc_struct *imx_usb)
temp = (EP_DIR(imx_ep) << 7) | (max << 5)
| (imx_ep->bmAttributes << 3);
__raw_writel(temp, imx_usb->base + USB_EP_STAT(i));
__raw_writel(temp | EPSTAT_FLUSH, imx_usb->base + USB_EP_STAT(i));
__raw_writel(temp | EPSTAT_FLUSH,
imx_usb->base + USB_EP_STAT(i));
D_INI(imx_usb->dev, "<%s> ep%d_stat %08x\n", __func__, i,
__raw_readl(imx_usb->base + USB_EP_STAT(i)));
}
@@ -278,15 +282,18 @@ void imx_ep_stall(struct imx_ep_struct *imx_ep)
struct imx_udc_struct *imx_usb = imx_ep->imx_usb;
int temp, i;
D_ERR(imx_usb->dev, "<%s> Forced stall on %s\n", __func__, imx_ep->ep.name);
D_ERR(imx_usb->dev,
"<%s> Forced stall on %s\n", __func__, imx_ep->ep.name);
imx_flush(imx_ep);
/* Special care for ep0 */
if (EP_NO(imx_ep)) {
if (!EP_NO(imx_ep)) {
temp = __raw_readl(imx_usb->base + USB_CTRL);
__raw_writel(temp | CTRL_CMDOVER | CTRL_CMDERROR, imx_usb->base + USB_CTRL);
do { } while (__raw_readl(imx_usb->base + USB_CTRL) & CTRL_CMDOVER);
__raw_writel(temp | CTRL_CMDOVER | CTRL_CMDERROR,
imx_usb->base + USB_CTRL);
do { } while (__raw_readl(imx_usb->base + USB_CTRL)
& CTRL_CMDOVER);
temp = __raw_readl(imx_usb->base + USB_CTRL);
__raw_writel(temp & ~CTRL_CMDERROR, imx_usb->base + USB_CTRL);
}
@@ -296,12 +303,13 @@ void imx_ep_stall(struct imx_ep_struct *imx_ep)
imx_usb->base + USB_EP_STAT(EP_NO(imx_ep)));
for (i = 0; i < 100; i ++) {
temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep)));
temp = __raw_readl(imx_usb->base
+ USB_EP_STAT(EP_NO(imx_ep)));
if (!(temp & EPSTAT_STALL))
break;
udelay(20);
}
if (i == 50)
if (i == 100)
D_ERR(imx_usb->dev, "<%s> Non finished stall on %s\n",
__func__, imx_ep->ep.name);
}
@@ -325,7 +333,8 @@ static int imx_udc_wakeup(struct usb_gadget *_gadget)
*******************************************************************************
*/
static void ep_add_request(struct imx_ep_struct *imx_ep, struct imx_request *req)
static void ep_add_request(struct imx_ep_struct *imx_ep,
struct imx_request *req)
{
if (unlikely(!req))
return;
@@ -334,7 +343,8 @@ static void ep_add_request(struct imx_ep_struct *imx_ep, struct imx_request *req
list_add_tail(&req->queue, &imx_ep->queue);
}
static void ep_del_request(struct imx_ep_struct *imx_ep, struct imx_request *req)
static void ep_del_request(struct imx_ep_struct *imx_ep,
struct imx_request *req)
{
if (unlikely(!req))
return;
@@ -343,7 +353,8 @@ static void ep_del_request(struct imx_ep_struct *imx_ep, struct imx_request *req
req->in_use = 0;
}
static void done(struct imx_ep_struct *imx_ep, struct imx_request *req, int status)
static void done(struct imx_ep_struct *imx_ep,
struct imx_request *req, int status)
{
ep_del_request(imx_ep, req);
@@ -494,7 +505,8 @@ static int write_fifo(struct imx_ep_struct *imx_ep, struct imx_request *req)
__func__, imx_ep->ep.name, req,
completed ? "completed" : "not completed");
if (!EP_NO(imx_ep))
ep0_chg_stat(__func__, imx_ep->imx_usb, EP0_IDLE);
ep0_chg_stat(__func__,
imx_ep->imx_usb, EP0_IDLE);
}
}
@@ -539,10 +551,9 @@ static int handle_ep0(struct imx_ep_struct *imx_ep)
struct imx_request *req = NULL;
int ret = 0;
if (!list_empty(&imx_ep->queue))
if (!list_empty(&imx_ep->queue)) {
req = list_entry(imx_ep->queue.next, struct imx_request, queue);
if (req) {
switch (imx_ep->imx_usb->ep0state) {
case EP0_IN_DATA_PHASE: /* GET_DESCRIPTOR */
@@ -561,6 +572,10 @@ static int handle_ep0(struct imx_ep_struct *imx_ep)
}
}
else
D_ERR(imx_ep->imx_usb->dev, "<%s> no request on %s\n",
__func__, imx_ep->ep.name);
return ret;
}
@@ -583,7 +598,8 @@ static void handle_ep0_devreq(struct imx_udc_struct *imx_usb)
"<%s> no setup packet received\n", __func__);
goto stall;
}
u.word[i] = __raw_readl(imx_usb->base + USB_EP_FDAT(EP_NO(imx_ep)));
u.word[i] = __raw_readl(imx_usb->base
+ USB_EP_FDAT(EP_NO(imx_ep)));
}
temp = imx_ep_empty(imx_ep);
@@ -759,7 +775,7 @@ static int imx_ep_queue
*/
if (imx_usb->set_config && !EP_NO(imx_ep)) {
imx_usb->set_config = 0;
D_EPX(imx_usb->dev,
D_ERR(imx_usb->dev,
"<%s> gadget reply set config\n", __func__);
return 0;
}
@@ -779,28 +795,29 @@ static int imx_ep_queue
return -ESHUTDOWN;
}
local_irq_save(flags);
/* Debug */
D_REQ(imx_usb->dev, "<%s> ep%d %s request for [%d] bytes\n",
__func__, EP_NO(imx_ep),
((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state == EP0_IN_DATA_PHASE)
|| (EP_NO(imx_ep) && EP_DIR(imx_ep))) ? "IN" : "OUT", usb_req->length);
((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state
== EP0_IN_DATA_PHASE)
|| (EP_NO(imx_ep) && EP_DIR(imx_ep)))
? "IN" : "OUT", usb_req->length);
dump_req(__func__, imx_ep, usb_req);
if (imx_ep->stopped) {
usb_req->status = -ESHUTDOWN;
ret = -ESHUTDOWN;
goto out;
return -ESHUTDOWN;
}
if (req->in_use) {
D_ERR(imx_usb->dev,
"<%s> refusing to queue req %p (already queued)\n",
__func__, req);
goto out;
return 0;
}
local_irq_save(flags);
usb_req->status = -EINPROGRESS;
usb_req->actual = 0;
@@ -810,7 +827,7 @@ static int imx_ep_queue
ret = handle_ep0(imx_ep);
else
ret = handle_ep(imx_ep);
out:
local_irq_restore(flags);
return ret;
}
@@ -997,71 +1014,32 @@ static void udc_stop_activity(struct imx_udc_struct *imx_usb,
*******************************************************************************
*/
static irqreturn_t imx_udc_irq(int irq, void *dev)
/*
* Called when timer expires.
* Timer is started when CFG_CHG is received.
*/
static void handle_config(unsigned long data)
{
struct imx_udc_struct *imx_usb = dev;
struct imx_udc_struct *imx_usb = (void *)data;
struct usb_ctrlrequest u;
int temp, cfg, intf, alt;
int intr = __raw_readl(imx_usb->base + USB_INTR);
if (intr & (INTR_WAKEUP | INTR_SUSPEND | INTR_RESUME | INTR_RESET_START
| INTR_RESET_STOP | INTR_CFG_CHG)) {
dump_intr(__func__, intr, imx_usb->dev);
dump_usb_stat(__func__, imx_usb);
}
local_irq_disable();
if (!imx_usb->driver) {
/*imx_udc_disable(imx_usb);*/
goto end_irq;
}
temp = __raw_readl(imx_usb->base + USB_STAT);
cfg = (temp & STAT_CFG) >> 5;
intf = (temp & STAT_INTF) >> 3;
alt = temp & STAT_ALTSET;
if (intr & INTR_WAKEUP) {
if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN
&& imx_usb->driver && imx_usb->driver->resume)
imx_usb->driver->resume(&imx_usb->gadget);
imx_usb->set_config = 0;
imx_usb->gadget.speed = USB_SPEED_FULL;
}
D_REQ(imx_usb->dev,
"<%s> orig config C=%d, I=%d, A=%d / "
"req config C=%d, I=%d, A=%d\n",
__func__, imx_usb->cfg, imx_usb->intf, imx_usb->alt,
cfg, intf, alt);
if (intr & INTR_SUSPEND) {
if (imx_usb->gadget.speed != USB_SPEED_UNKNOWN
&& imx_usb->driver && imx_usb->driver->suspend)
imx_usb->driver->suspend(&imx_usb->gadget);
imx_usb->set_config = 0;
imx_usb->gadget.speed = USB_SPEED_UNKNOWN;
}
if (cfg == 1 || cfg == 2) {
if (intr & INTR_RESET_START) {
__raw_writel(intr, imx_usb->base + USB_INTR);
udc_stop_activity(imx_usb, imx_usb->driver);
imx_usb->set_config = 0;
imx_usb->gadget.speed = USB_SPEED_UNKNOWN;
}
if (intr & INTR_RESET_STOP)
imx_usb->gadget.speed = USB_SPEED_FULL;
if (intr & INTR_CFG_CHG) {
__raw_writel(INTR_CFG_CHG, imx_usb->base + USB_INTR);
temp = __raw_readl(imx_usb->base + USB_STAT);
cfg = (temp & STAT_CFG) >> 5;
intf = (temp & STAT_INTF) >> 3;
alt = temp & STAT_ALTSET;
D_REQ(imx_usb->dev,
"<%s> orig config C=%d, I=%d, A=%d / "
"req config C=%d, I=%d, A=%d\n",
__func__, imx_usb->cfg, imx_usb->intf, imx_usb->alt,
cfg, intf, alt);
if (cfg != 1 && cfg != 2)
goto end_irq;
imx_usb->set_config = 0;
/* Config setup */
if (imx_usb->cfg != cfg) {
D_REQ(imx_usb->dev, "<%s> Change config start\n",__func__);
u.bRequest = USB_REQ_SET_CONFIGURATION;
u.bRequestType = USB_DIR_OUT |
USB_TYPE_STANDARD |
@@ -1070,14 +1048,10 @@ static irqreturn_t imx_udc_irq(int irq, void *dev)
u.wIndex = 0;
u.wLength = 0;
imx_usb->cfg = cfg;
imx_usb->set_config = 1;
imx_usb->driver->setup(&imx_usb->gadget, &u);
imx_usb->set_config = 0;
D_REQ(imx_usb->dev, "<%s> Change config done\n",__func__);
}
if (imx_usb->intf != intf || imx_usb->alt != alt) {
D_REQ(imx_usb->dev, "<%s> Change interface start\n",__func__);
u.bRequest = USB_REQ_SET_INTERFACE;
u.bRequestType = USB_DIR_OUT |
USB_TYPE_STANDARD |
@@ -1087,20 +1061,92 @@ static irqreturn_t imx_udc_irq(int irq, void *dev)
u.wLength = 0;
imx_usb->intf = intf;
imx_usb->alt = alt;
imx_usb->set_config = 1;
imx_usb->driver->setup(&imx_usb->gadget, &u);
imx_usb->set_config = 0;
D_REQ(imx_usb->dev, "<%s> Change interface done\n",__func__);
}
}
imx_usb->set_config = 0;
local_irq_enable();
}
static irqreturn_t imx_udc_irq(int irq, void *dev)
{
struct imx_udc_struct *imx_usb = dev;
int intr = __raw_readl(imx_usb->base + USB_INTR);
int temp;
if (intr & (INTR_WAKEUP | INTR_SUSPEND | INTR_RESUME | INTR_RESET_START
| INTR_RESET_STOP | INTR_CFG_CHG)) {
dump_intr(__func__, intr, imx_usb->dev);
dump_usb_stat(__func__, imx_usb);
}
if (!imx_usb->driver)
goto end_irq;
if (intr & INTR_SOF) {
/* Copy from Freescale BSP.
We must enable SOF intr and set CMDOVER.
Datasheet don't specifiy this action, but it
is done in Freescale BSP, so just copy it.
*/
if (imx_usb->ep0state == EP0_IDLE) {
temp = __raw_readl(imx_usb->base + USB_CTRL);
__raw_writel(temp | CTRL_CMDOVER, imx_usb->base + USB_CTRL);
__raw_writel(temp | CTRL_CMDOVER,
imx_usb->base + USB_CTRL);
}
}
if (intr & INTR_CFG_CHG) {
/* A workaround of serious IMX UDC bug.
Handling of CFG_CHG should be delayed for some time, because
IMX does not NACK the host when CFG_CHG interrupt is pending.
There is no time to handle current CFG_CHG
if next CFG_CHG or SETUP packed is send immediately.
We have to clear CFG_CHG, start the timer and
NACK the host by setting CTRL_CMDOVER
if it sends any SETUP packet.
When timer expires, handler is called to handle configuration
changes. While CFG_CHG is not handled (set_config=1),
we must NACK the host to every SETUP packed.
This delay prevents from going out of sync with host.
*/
__raw_writel(INTR_CFG_CHG, imx_usb->base + USB_INTR);
imx_usb->set_config = 1;
mod_timer(&imx_usb->timer, jiffies + 5);
goto end_irq;
}
if (intr & INTR_WAKEUP) {
if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN
&& imx_usb->driver && imx_usb->driver->resume)
imx_usb->driver->resume(&imx_usb->gadget);
imx_usb->set_config = 0;
del_timer(&imx_usb->timer);
imx_usb->gadget.speed = USB_SPEED_FULL;
}
if (intr & INTR_SUSPEND) {
if (imx_usb->gadget.speed != USB_SPEED_UNKNOWN
&& imx_usb->driver && imx_usb->driver->suspend)
imx_usb->driver->suspend(&imx_usb->gadget);
imx_usb->set_config = 0;
del_timer(&imx_usb->timer);
imx_usb->gadget.speed = USB_SPEED_UNKNOWN;
}
if (intr & INTR_RESET_START) {
__raw_writel(intr, imx_usb->base + USB_INTR);
udc_stop_activity(imx_usb, imx_usb->driver);
imx_usb->set_config = 0;
del_timer(&imx_usb->timer);
imx_usb->gadget.speed = USB_SPEED_UNKNOWN;
}
if (intr & INTR_RESET_STOP)
imx_usb->gadget.speed = USB_SPEED_FULL;
end_irq:
__raw_writel(intr, imx_usb->base + USB_INTR);
return IRQ_HANDLED;
@@ -1109,6 +1155,7 @@ end_irq:
static irqreturn_t imx_udc_ctrl_irq(int irq, void *dev)
{
struct imx_udc_struct *imx_usb = dev;
struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[0];
int intr = __raw_readl(imx_usb->base + USB_EP_INTR(0));
dump_ep_intr(__func__, 0, intr, imx_usb->dev);
@@ -1118,16 +1165,15 @@ static irqreturn_t imx_udc_ctrl_irq(int irq, void *dev)
return IRQ_HANDLED;
}
/* DEVREQ IRQ has highest priority */
/* DEVREQ has highest priority */
if (intr & (EPINTR_DEVREQ | EPINTR_MDEVREQ))
handle_ep0_devreq(imx_usb);
/* Seem i.MX is missing EOF interrupt sometimes.
* Therefore we monitor both EOF and FIFO_EMPTY interrups
* when transmiting, and both EOF and FIFO_FULL when
* receiving data.
* Therefore we don't monitor EOF.
* We call handle_ep0() only if a request is queued for ep0.
*/
else if (intr & (EPINTR_EOF | EPINTR_FIFO_EMPTY | EPINTR_FIFO_FULL))
handle_ep0(&imx_usb->imx_ep[0]);
else if (!list_empty(&imx_ep->queue))
handle_ep0(imx_ep);
__raw_writel(intr, imx_usb->base + USB_EP_INTR(0));
@@ -1318,6 +1364,7 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
udc_stop_activity(imx_usb, driver);
imx_udc_disable(imx_usb);
del_timer(&imx_usb->timer);
driver->unbind(&imx_usb->gadget);
imx_usb->gadget.dev.driver = NULL;
@@ -1435,6 +1482,10 @@ static int __init imx_udc_probe(struct platform_device *pdev)
usb_init_data(imx_usb);
imx_udc_init(imx_usb);
init_timer(&imx_usb->timer);
imx_usb->timer.function = handle_config;
imx_usb->timer.data = (unsigned long)imx_usb;
return 0;
fail3:
@@ -1457,6 +1508,7 @@ static int __exit imx_udc_remove(struct platform_device *pdev)
int i;
imx_udc_disable(imx_usb);
del_timer(&imx_usb->timer);
for (i = 0; i < IMX_USB_NB_EP + 1; i++)
free_irq(imx_usb->usbd_int[i], imx_usb);