Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9068a4c6467986e8fda5bdb29bd5f10c6788e2ff
Commit: 9068a4c6467986e8fda5bdb29bd5f10c6788e2ff
Parent: e4f747373cd96c86db3c64c21710748c6889c03c
Author: Milan Svoboda <[EMAIL PROTECTED]>
AuthorDate: Sat Jun 30 06:25:35 2007 -0700
Committer: Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Thu Jul 12 16:34:42 2007 -0700
USB: pxa2xx_udc: use generic gpio layer
This patch lets the pxa2xx_udc use the generic gpio layer,
on the relevant PXA and IXP systems.
Signed-off-by: Milan Svoboda <[EMAIL PROTECTED]>
Signed-off-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/gadget/pxa2xx_udc.c | 63 ++++++++++++++++++++++++++++--------
include/asm-arm/arch-ixp4xx/udc.h | 22 -------------
include/asm-arm/arch-pxa/udc.h | 33 -------------------
3 files changed, 49 insertions(+), 69 deletions(-)
diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c
index 84392e8..c9ec0b3 100644
--- a/drivers/usb/gadget/pxa2xx_udc.c
+++ b/drivers/usb/gadget/pxa2xx_udc.c
@@ -27,6 +27,7 @@
#undef DEBUG
// #define VERBOSE DBG_VERBOSE
+#include <linux/device.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/ioport.h>
@@ -46,19 +47,17 @@
#include <asm/byteorder.h>
#include <asm/dma.h>
+#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/mach-types.h>
#include <asm/unaligned.h>
#include <asm/hardware.h>
-#ifdef CONFIG_ARCH_PXA
-#include <asm/arch/pxa-regs.h>
-#endif
#include <linux/usb/ch9.h>
#include <linux/usb_gadget.h>
-#include <asm/arch/udc.h>
+#include <asm/mach/udc_pxa2xx.h>
/*
@@ -155,7 +154,7 @@ static int is_vbus_present(void)
struct pxa2xx_udc_mach_info *mach = the_controller->mach;
if (mach->gpio_vbus)
- return udc_gpio_get(mach->gpio_vbus);
+ return gpio_get_value(mach->gpio_vbus);
if (mach->udc_is_connected)
return mach->udc_is_connected();
return 1;
@@ -167,7 +166,7 @@ static void pullup_off(void)
struct pxa2xx_udc_mach_info *mach = the_controller->mach;
if (mach->gpio_pullup)
- udc_gpio_set(mach->gpio_pullup, 0);
+ gpio_set_value(mach->gpio_pullup, 0);
else if (mach->udc_command)
mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
}
@@ -177,7 +176,7 @@ static void pullup_on(void)
struct pxa2xx_udc_mach_info *mach = the_controller->mach;
if (mach->gpio_pullup)
- udc_gpio_set(mach->gpio_pullup, 1);
+ gpio_set_value(mach->gpio_pullup, 1);
else if (mach->udc_command)
mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
}
@@ -1742,7 +1741,7 @@ lubbock_vbus_irq(int irq, void *_dev)
static irqreturn_t udc_vbus_irq(int irq, void *_dev)
{
struct pxa2xx_udc *dev = _dev;
- int vbus = udc_gpio_get(dev->mach->gpio_vbus);
+ int vbus = gpio_get_value(dev->mach->gpio_vbus);
pxa2xx_udc_vbus_session(&dev->gadget, vbus);
return IRQ_HANDLED;
@@ -2535,14 +2534,33 @@ static int __init pxa2xx_udc_probe(struct
platform_device *pdev)
/* other non-static parts of init */
dev->dev = &pdev->dev;
dev->mach = pdev->dev.platform_data;
+
if (dev->mach->gpio_vbus) {
- udc_gpio_init_vbus(dev->mach->gpio_vbus);
- vbus_irq = udc_gpio_to_irq(dev->mach->gpio_vbus);
+ if ((retval = gpio_request(dev->mach->gpio_vbus,
+ "pxa2xx_udc GPIO VBUS"))) {
+ dev_dbg(&pdev->dev,
+ "can't get vbus gpio %d, err: %d\n",
+ dev->mach->gpio_vbus, retval);
+ return -EBUSY;
+ }
+ gpio_direction_input(dev->mach->gpio_vbus);
+ vbus_irq = gpio_to_irq(dev->mach->gpio_vbus);
set_irq_type(vbus_irq, IRQT_BOTHEDGE);
} else
vbus_irq = 0;
- if (dev->mach->gpio_pullup)
- udc_gpio_init_pullup(dev->mach->gpio_pullup);
+
+ if (dev->mach->gpio_pullup) {
+ if ((retval = gpio_request(dev->mach->gpio_pullup,
+ "pca2xx_udc GPIO PULLUP"))) {
+ dev_dbg(&pdev->dev,
+ "can't get pullup gpio %d, err: %d\n",
+ dev->mach->gpio_pullup, retval);
+ if (dev->mach->gpio_vbus)
+ gpio_free(dev->mach->gpio_vbus);
+ return -EBUSY;
+ }
+ gpio_direction_output(dev->mach->gpio_pullup, 0);
+ }
init_timer(&dev->timer);
dev->timer.function = udc_watchdog;
@@ -2566,6 +2584,10 @@ static int __init pxa2xx_udc_probe(struct
platform_device *pdev)
if (retval != 0) {
printk(KERN_ERR "%s: can't get irq %d, err %d\n",
driver_name, irq, retval);
+ if (dev->mach->gpio_pullup)
+ gpio_free(dev->mach->gpio_pullup);
+ if (dev->mach->gpio_vbus)
+ gpio_free(dev->mach->gpio_vbus);
return -EBUSY;
}
dev->got_irq = 1;
@@ -2581,6 +2603,10 @@ static int __init pxa2xx_udc_probe(struct
platform_device *pdev)
driver_name, LUBBOCK_USB_DISC_IRQ, retval);
lubbock_fail0:
free_irq(irq, dev);
+ if (dev->mach->gpio_pullup)
+ gpio_free(dev->mach->gpio_pullup);
+ if (dev->mach->gpio_vbus)
+ gpio_free(dev->mach->gpio_vbus);
return -EBUSY;
}
retval = request_irq(LUBBOCK_USB_IRQ,
@@ -2608,6 +2634,10 @@ lubbock_fail0:
printk(KERN_ERR "%s: can't get irq %i, err %d\n",
driver_name, vbus_irq, retval);
free_irq(irq, dev);
+ if (dev->mach->gpio_pullup)
+ gpio_free(dev->mach->gpio_pullup);
+ if (dev->mach->gpio_vbus)
+ gpio_free(dev->mach->gpio_vbus);
return -EBUSY;
}
}
@@ -2641,8 +2671,13 @@ static int __exit pxa2xx_udc_remove(struct
platform_device *pdev)
free_irq(LUBBOCK_USB_IRQ, dev);
}
#endif
- if (dev->mach->gpio_vbus)
- free_irq(IRQ_GPIO(dev->mach->gpio_vbus), dev);
+ if (dev->mach->gpio_vbus) {
+ free_irq(gpio_to_irq(dev->mach->gpio_vbus), dev);
+ gpio_free(dev->mach->gpio_vbus);
+ }
+ if (dev->mach->gpio_pullup)
+ gpio_free(dev->mach->gpio_pullup);
+
platform_set_drvdata(pdev, NULL);
the_controller = NULL;
return 0;
diff --git a/include/asm-arm/arch-ixp4xx/udc.h
b/include/asm-arm/arch-ixp4xx/udc.h
index 79b850a..dbdec36 100644
--- a/include/asm-arm/arch-ixp4xx/udc.h
+++ b/include/asm-arm/arch-ixp4xx/udc.h
@@ -6,25 +6,3 @@
extern void ixp4xx_set_udc_info(struct pxa2xx_udc_mach_info *info);
-static inline int udc_gpio_to_irq(unsigned gpio)
-{
- return 0;
-}
-
-static inline void udc_gpio_init_vbus(unsigned gpio)
-{
-}
-
-static inline void udc_gpio_init_pullup(unsigned gpio)
-{
-}
-
-static inline int udc_gpio_get(unsigned gpio)
-{
- return 0;
-}
-
-static inline void udc_gpio_set(unsigned gpio, int is_on)
-{
-}
-
diff --git a/include/asm-arm/arch-pxa/udc.h b/include/asm-arm/arch-pxa/udc.h
index 8bc6f9c..27aa3a9 100644
--- a/include/asm-arm/arch-pxa/udc.h
+++ b/include/asm-arm/arch-pxa/udc.h
@@ -1,41 +1,8 @@
/*
* linux/include/asm-arm/arch-pxa/udc.h
*
- * This supports machine-specific differences in how the PXA2xx
- * USB Device Controller (UDC) is wired.
- *
*/
#include <asm/mach/udc_pxa2xx.h>
extern void pxa_set_udc_info(struct pxa2xx_udc_mach_info *info);
-static inline int udc_gpio_to_irq(unsigned gpio)
-{
- return IRQ_GPIO(gpio & GPIO_MD_MASK_NR);
-}
-
-static inline void udc_gpio_init_vbus(unsigned gpio)
-{
- pxa_gpio_mode((gpio & GPIO_MD_MASK_NR) | GPIO_IN);
-}
-
-static inline void udc_gpio_init_pullup(unsigned gpio)
-{
- pxa_gpio_mode((gpio & GPIO_MD_MASK_NR) | GPIO_OUT | GPIO_DFLT_LOW);
-}
-
-static inline int udc_gpio_get(unsigned gpio)
-{
- return (GPLR(gpio) & GPIO_bit(gpio)) != 0;
-}
-
-static inline void udc_gpio_set(unsigned gpio, int is_on)
-{
- int mask = GPIO_bit(gpio);
-
- if (is_on)
- GPSR(gpio) = mask;
- else
- GPCR(gpio) = mask;
-}
-
-
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