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[PATCH] OMAP GPIO wrappers

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This teaches OMAP how to implement the cross-platform GPIO interfaces.

[akpm@osdl.org: cleanups]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Brownell 2007-02-12 00:53:12 -08:00 committed by Linus Torvalds
parent 4c20386c8d
commit 3c729f1ecd
1 changed files with 66 additions and 0 deletions
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66
include/asm-arm/arch-omap/gpio.h
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@ -76,4 +76,70 @@ extern void omap_set_gpio_direction(int gpio, int is_input);
extern void omap_set_gpio_dataout(int gpio, int enable);
extern int omap_get_gpio_datain(int gpio);
/*-------------------------------------------------------------------------*/
/* wrappers for "new style" GPIO calls. the old OMAP-specfic ones should
* eventually be removed (along with this errno.h inclusion), and maybe
* gpios should put MPUIOs last too.
*/
#include <asm/errno.h>
static inline int gpio_request(unsigned gpio, const char *label)
{
return omap_request_gpio(gpio);
}
static inline void gpio_free(unsigned gpio)
{
omap_free_gpio(gpio);
}
static inline int __gpio_set_direction(unsigned gpio, int is_input)
{
if (cpu_class_is_omap2()) {
if (gpio > OMAP_MAX_GPIO_LINES)
return -EINVAL;
} else {
if (gpio > (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */))
return -EINVAL;
}
omap_set_gpio_direction(gpio, is_input);
return 0;
}
static inline int gpio_direction_input(unsigned gpio)
{
return __gpio_set_direction(gpio, 1);
}
static inline int gpio_direction_output(unsigned gpio)
{
return __gpio_set_direction(gpio, 0);
}
static inline int gpio_get_value(unsigned gpio)
{
return omap_get_gpio_datain(gpio);
}
static inline void gpio_set_value(unsigned gpio, int value)
{
omap_set_gpio_dataout(gpio, value);
}
#include <asm-generic/gpio.h> /* cansleep wrappers */
static inline int gpio_to_irq(unsigned gpio)
{
return OMAP_GPIO_IRQ(gpio);
}
static inline int irq_to_gpio(unsigned irq)
{
if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16)))
return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES;
return irq - IH_GPIO_BASE;
}
#endif