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[ARM] 4988/1: Add GPIO lib support to the EP93xx

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Adds support for the generic GPIO lib to the EP93xx family. The gpio
handling code has been moved from core.c to a new file called gpio.c.
The GPIO based IRQ code has not been changed.

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ryan Mallon
2008-04-16 02:56:35 +01:00
committed by Russell King
parent 05dda977f2
commit b685004f8d
5 changed files with 176 additions and 115 deletions
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21
include/asm-arm/arch-ep93xx/gpio.h
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@@ -101,30 +101,17 @@
/* new generic GPIO API - see Documentation/gpio.txt */
static inline int gpio_request(unsigned gpio, const char *label)
{
if (gpio > EP93XX_GPIO_LINE_MAX)
return -EINVAL;
return 0;
}
#include <asm-generic/gpio.h>
static inline void gpio_free(unsigned gpio)
{
}
int gpio_direction_input(unsigned gpio);
int gpio_direction_output(unsigned gpio, int value);
int gpio_get_value(unsigned gpio);
void gpio_set_value(unsigned gpio, int value);
#include <asm-generic/gpio.h> /* cansleep wrappers */
#define gpio_get_value __gpio_get_value
#define gpio_set_value __gpio_set_value
#define gpio_cansleep __gpio_cansleep
/*
* Map GPIO A0..A7 (0..7) to irq 64..71,
* B0..B7 (7..15) to irq 72..79, and
* F0..F7 (16..24) to irq 80..87.
*/
static inline int gpio_to_irq(unsigned gpio)
{
if (gpio <= EP93XX_GPIO_LINE_MAX_IRQ)