[ARM] 4141/1: consolidate functions that handles gpio in pxa2xx_udc

This patch renames pxa_gpio_set/get functions defined in drivers/usb/gadget/pxa2xx_udc.h to udc_gpio_set/get.

These functions are moved from drivers/usb/gadget/pxa2xx_udc.h to include/asm-arm/arch-pxa2xx/udc.h

Creates new functions: udc_gpio_to_irq, udc_gpio_init_vbus, udc_gpio_init_pullup in include/asm-arm/arch-pxa2xx/udc.h. These functions are used in drivers/usb/gadget/pxa2xx_udc.c instead of direct low-level (pxa2xx only) functions.

Creates all these udc_gpio_* functions in include/asm-arm/arch-ixp4xx/udc.h. This implementation has no real code because ixp4xx doesn't use vbus - only vbus uses all these gpio functions (and because ixp4xx misses any function which converts number of gpio pin into it's irq).

This is next step to make pxa2xx_udc fully work on ixp4xx platform.

Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

4 files changed, 59 insertions, 24 deletions

diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c
index b78de9694665..3547f049237e 100644
--- a/drivers/usb/gadget/pxa2xx_udc.c
+++ b/drivers/usb/gadget/pxa2xx_udc.c
@@ -156,7 +156,7 @@ static int is_vbus_present(void)
         struct pxa2xx_udc_mach_info             *mach = the_controller->mach;
 
         if (mach->gpio_vbus)
-                return pxa_gpio_get(mach->gpio_vbus);
+                return udc_gpio_get(mach->gpio_vbus);
         if (mach->udc_is_connected)
                 return mach->udc_is_connected();
         return 1;
@@ -168,7 +168,7 @@ static void pullup_off(void)
         struct pxa2xx_udc_mach_info             *mach = the_controller->mach;
 
         if (mach->gpio_pullup)
-                pxa_gpio_set(mach->gpio_pullup, 0);
+                udc_gpio_set(mach->gpio_pullup, 0);
         else if (mach->udc_command)
                 mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
 }
@@ -178,7 +178,7 @@ static void pullup_on(void)
         struct pxa2xx_udc_mach_info             *mach = the_controller->mach;
 
         if (mach->gpio_pullup)
-                pxa_gpio_set(mach->gpio_pullup, 1);
+                udc_gpio_set(mach->gpio_pullup, 1);
         else if (mach->udc_command)
                 mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
 }
@@ -1756,7 +1756,7 @@ lubbock_vbus_irq(int irq, void *_dev)
 static irqreturn_t udc_vbus_irq(int irq, void *_dev)
 {
         struct pxa2xx_udc       *dev = _dev;
-        int                     vbus = pxa_gpio_get(dev->mach->gpio_vbus);
+        int                     vbus = udc_gpio_get(dev->mach->gpio_vbus);
 
         pxa2xx_udc_vbus_session(&dev->gadget, vbus);
         return IRQ_HANDLED;
@@ -2546,15 +2546,13 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
         dev->dev = &pdev->dev;
         dev->mach = pdev->dev.platform_data;
         if (dev->mach->gpio_vbus) {
-                vbus_irq = IRQ_GPIO(dev->mach->gpio_vbus & GPIO_MD_MASK_NR);
-                pxa_gpio_mode((dev->mach->gpio_vbus & GPIO_MD_MASK_NR)
-                                | GPIO_IN);
+                udc_gpio_init_vbus(dev->mach->gpio_vbus);
+                vbus_irq = udc_gpio_to_irq(dev->mach->gpio_vbus);
                 set_irq_type(vbus_irq, IRQT_BOTHEDGE);
         } else
                 vbus_irq = 0;
         if (dev->mach->gpio_pullup)
-                pxa_gpio_mode((dev->mach->gpio_pullup & GPIO_MD_MASK_NR)
-                                | GPIO_OUT | GPIO_DFLT_LOW);
+                udc_gpio_init_pullup(dev->mach->gpio_pullup);
 
         init_timer(&dev->timer);
         dev->timer.function = udc_watchdog;
diff --git a/drivers/usb/gadget/pxa2xx_udc.h b/drivers/usb/gadget/pxa2xx_udc.h
index 8e598c8bf4e3..773e549aff3f 100644
--- a/drivers/usb/gadget/pxa2xx_udc.h
+++ b/drivers/usb/gadget/pxa2xx_udc.h
@@ -177,21 +177,6 @@ struct pxa2xx_udc {
 
 static struct pxa2xx_udc *the_controller;
 
-static inline int pxa_gpio_get(unsigned gpio)
-{
-        return (GPLR(gpio) & GPIO_bit(gpio)) != 0;
-}
-
-static inline void pxa_gpio_set(unsigned gpio, int is_on)
-{
-        int mask = GPIO_bit(gpio);
-
-        if (is_on)
-                GPSR(gpio) = mask;
-        else
-                GPCR(gpio) = mask;
-}
-
 /*-------------------------------------------------------------------------*/
 
 /*
diff --git a/include/asm-arm/arch-ixp4xx/udc.h b/include/asm-arm/arch-ixp4xx/udc.h
index dbdec36ff0d1..79b850a3be47 100644
--- a/include/asm-arm/arch-ixp4xx/udc.h
+++ b/include/asm-arm/arch-ixp4xx/udc.h
@@ -6,3 +6,25 @@
 
 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 646480d37256..8bc6f9c3e3ea 100644
--- a/include/asm-arm/arch-pxa/udc.h
+++ b/include/asm-arm/arch-pxa/udc.h
@@ -9,3 +9,33 @@
 
 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;
+}
+