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[ARM] 2836/1: Cleanup IXP4xx GPIO code

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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>
This commit is contained in:
Deepak Saxena 2005-08-29 22:46:30 +01:00 • committed by Russell King
parent e605ecd7c8
commit bdf82b59c5
6 changed files with 91 additions and 134 deletions
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19
include/asm-arm/arch-ixp4xx/platform.h
View file

@ -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)
{