[ARM] 2836/1: Cleanup IXP4xx GPIO code

Patch from Deepak Saxena

This patch implements the set_irq_type() hooks for configuring GPIO
IRQ type and updates all the platforms to use it instead of the
gpio_line_config() function which is now used to configure input
vs. output on the pins.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 7 insertions, 12 deletions

diff --git a/include/asm-arm/arch-ixp4xx/platform.h b/include/asm-arm/arch-ixp4xx/platform.h
index 3a626c03ea26..d13ee7f78c70 100644
--- a/include/asm-arm/arch-ixp4xx/platform.h
+++ b/include/asm-arm/arch-ixp4xx/platform.h
@@ -83,17 +83,6 @@ extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys);
 #define IXP4XX_GPIO_OUT                 0x1
 #define IXP4XX_GPIO_IN                  0x2
 
-#define IXP4XX_GPIO_INTSTYLE_MASK       0x7C  /* Bits [6:2] define interrupt style */
-
-/* 
- * GPIO interrupt types.
- */
-#define IXP4XX_GPIO_ACTIVE_HIGH         0x4 /* Default */
-#define IXP4XX_GPIO_ACTIVE_LOW          0x8
-#define IXP4XX_GPIO_RISING_EDGE         0x10
-#define IXP4XX_GPIO_FALLING_EDGE        0x20
-#define IXP4XX_GPIO_TRANSITIONAL        0x40
-
 /* GPIO signal types */
 #define IXP4XX_GPIO_LOW                 0
 #define IXP4XX_GPIO_HIGH                1
@@ -102,7 +91,13 @@ extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys);
 #define IXP4XX_GPIO_CLK_0               14
 #define IXP4XX_GPIO_CLK_1               15
 
-extern void gpio_line_config(u8 line, u32 style);
+static inline void gpio_line_config(u8 line, u32 direction)
+{
+        if (direction == IXP4XX_GPIO_OUT)
+                *IXP4XX_GPIO_GPOER |= (1 << line);
+        else
+                *IXP4XX_GPIO_GPOER &= ~(1 << line);
+}
 
 static inline void gpio_line_get(u8 line, int *value)
 {