userspace gpio driver for .21

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7368 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 30 insertions, 32 deletions

diff --git a/target/linux/at91-2.6/patches/003-gpio-driver.patch b/target/linux/at91-2.6/patches/003-gpio-driver.patch
index c14542acc6..aa5a2e32e1 100644
--- a/target/linux/at91-2.6/patches/003-gpio-driver.patch
+++ b/target/linux/at91-2.6/patches/003-gpio-driver.patch
@@ -1,16 +1,28 @@
-diff -urN linux-2.6.19.2.old/arch/arm/mach-at91rm9200/gpio.c linux-2.6.19.2/arch/arm/mach-at91rm9200/gpio.c
---- linux-2.6.19.2.old/arch/arm/mach-at91rm9200/gpio.c	2007-03-06 22:49:37.000000000 +0100
-+++ linux-2.6.19.2/arch/arm/mach-at91rm9200/gpio.c	2007-03-07 10:25:41.000000000 +0100
-@@ -28,7 +28,7 @@
+--- linux-2.6.21.1.orig/arch/arm/mach-at91/gpio.c	2007-04-27 23:49:26.000000000 +0200
++++ linux-2.6.21.1/arch/arm/mach-at91/gpio.c	2007-05-28 15:30:48.000000000 +0200
+@@ -27,6 +27,7 @@
  
  static struct at91_gpio_bank *gpio;
  static int gpio_banks;
--
 +static u32 pio_gpio_pin[4] = { 0, 0, 0, 0 };
  
+ 
  static inline void __iomem *pin_to_controller(unsigned pin)
+@@ -71,9 +72,13 @@
  {
-@@ -113,10 +113,13 @@
+ 	void __iomem	*pio = pin_to_controller(pin);
+ 	unsigned	mask = pin_to_mask(pin);
++	int bank = (pin - PIN_BASE) / 32;
+ 
+ 	if (!pio)
+ 		return -EINVAL;
++
++	pio_gpio_pin[bank] |= mask;
++
+ 	__raw_writel(mask, pio + PIO_IDR);
+ 	__raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR));
+ 	__raw_writel(mask, pio + PIO_PER);
+@@ -130,10 +135,13 @@
  {
  	void __iomem	*pio = pin_to_controller(pin);
  	unsigned	mask = pin_to_mask(pin);
@@ -24,7 +36,7 @@ diff -urN linux-2.6.19.2.old/arch/arm/mach-at91rm9200/gpio.c linux-2.6.19.2/arch
  	__raw_writel(mask, pio + PIO_IDR);
  	__raw_writel(mask, pio + (use_pullup ? PIO_PUER : PIO_PUDR));
  	__raw_writel(mask, pio + PIO_ODR);
-@@ -134,10 +137,13 @@
+@@ -151,10 +159,13 @@
  {
  	void __iomem	*pio = pin_to_controller(pin);
  	unsigned	mask = pin_to_mask(pin);
@@ -38,7 +50,7 @@ diff -urN linux-2.6.19.2.old/arch/arm/mach-at91rm9200/gpio.c linux-2.6.19.2/arch
  	__raw_writel(mask, pio + PIO_IDR);
  	__raw_writel(mask, pio + PIO_PUDR);
  	__raw_writel(mask, pio + (value ? PIO_SODR : PIO_CODR));
-@@ -214,6 +220,18 @@
+@@ -262,6 +273,18 @@
  }
  EXPORT_SYMBOL(at91_get_gpio_value);
  
@@ -57,10 +69,9 @@ diff -urN linux-2.6.19.2.old/arch/arm/mach-at91rm9200/gpio.c linux-2.6.19.2/arch
  /*--------------------------------------------------------------------------*/
  
  #ifdef CONFIG_PM
-diff -urN linux-2.6.19.2.old/drivers/char/Kconfig linux-2.6.19.2/drivers/char/Kconfig
---- linux-2.6.19.2.old/drivers/char/Kconfig	2007-03-06 22:49:37.000000000 +0100
-+++ linux-2.6.19.2/drivers/char/Kconfig	2007-03-07 01:08:57.000000000 +0100
-@@ -1064,5 +1064,12 @@
+--- linux-2.6.21.1.orig/drivers/char/Kconfig	2007-05-28 12:22:29.000000000 +0200
++++ linux-2.6.21.1/drivers/char/Kconfig	2007-05-28 15:37:43.000000000 +0200
+@@ -1087,5 +1087,12 @@
  	  The SPI driver gives user mode access to this serial
  	  bus on the AT91RM9200 processor.
  
@@ -69,24 +80,22 @@ diff -urN linux-2.6.19.2.old/drivers/char/Kconfig linux-2.6.19.2/drivers/char/Kc
 +  depends on ARCH_AT91RM9200 && MACH_VLINK
 +  default n
 +  help
-+    Provides a handler for LED and GPIO in userspace
++    Provides a handler GPIO's in userspace
 +
  endmenu
  
-diff -urN linux-2.6.19.2.old/drivers/char/Makefile linux-2.6.19.2/drivers/char/Makefile
---- linux-2.6.19.2.old/drivers/char/Makefile	2007-03-06 22:49:37.000000000 +0100
-+++ linux-2.6.19.2/drivers/char/Makefile	2007-03-07 01:08:05.000000000 +0100
-@@ -92,6 +92,7 @@
+--- linux-2.6.21.1.orig/drivers/char/Makefile	2007-05-28 12:22:29.000000000 +0200
++++ linux-2.6.21.1/drivers/char/Makefile	2007-05-28 15:38:11.000000000 +0200
+@@ -95,6 +95,7 @@
  obj-$(CONFIG_TELCLOCK)		+= tlclk.o
  obj-$(CONFIG_AT91_SPI)		+= at91_spi.o
  obj-$(CONFIG_AT91_SPIDEV)	+= at91_spidev.o
-+obj-$(CONFIG_AT91_VLIO)	+= vlink_giu.o
++obj-$(CONFIG_AT91_VLIO)  += vlink_giu.o
  
  obj-$(CONFIG_WATCHDOG)		+= watchdog/
  obj-$(CONFIG_MWAVE)		+= mwave/
-diff -urN linux-2.6.19.2.old/drivers/char/vlink_giu.c linux-2.6.19.2/drivers/char/vlink_giu.c
---- linux-2.6.19.2.old/drivers/char/vlink_giu.c	1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.19.2/drivers/char/vlink_giu.c	2007-03-07 01:21:21.000000000 +0100
+--- linux-2.6.21.1.orig/drivers/char/vlink_giu.c	1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.21.1/drivers/char/vlink_giu.c	2007-05-28 15:39:47.000000000 +0200
 @@ -0,0 +1,256 @@
 +/*
 + *  Driver for FDL Versalink GPIO
@@ -344,14 +353,3 @@ diff -urN linux-2.6.19.2.old/drivers/char/vlink_giu.c linux-2.6.19.2/drivers/cha
 +MODULE_AUTHOR("Hamish Guthrie <hamish@prodigi.ch>");
 +MODULE_DESCRIPTION("FDL Versalink GPIO Driver");
 +MODULE_LICENSE("GPL");
-diff -urN linux-2.6.19.2.old/include/asm-arm/arch-at91rm9200/gpio.h linux-2.6.19.2/include/asm-arm/arch-at91rm9200/gpio.h
---- linux-2.6.19.2.old/include/asm-arm/arch-at91rm9200/gpio.h	2007-01-10 20:10:37.000000000 +0100
-+++ linux-2.6.19.2/include/asm-arm/arch-at91rm9200/gpio.h	2007-03-07 01:17:23.000000000 +0100
-@@ -189,6 +189,7 @@
- /* callable at any time */
- extern int at91_set_gpio_value(unsigned pin, int value);
- extern int at91_get_gpio_value(unsigned pin);
-+extern int at91_is_pin_gpio(unsigned pin);
- 
- /* callable only from core power-management code */
- extern void at91_gpio_suspend(void);