diff options
| author | Guennadi Liakhovetski <lg@denx.de> | 2009-02-07 01:18:07 +0100 |
|---|---|---|
| committer | Anatolij Gustschin <agust@denx.de> | 2009-02-24 09:43:10 +0100 |
| commit | b30de3cccf8867566cd314e7c7033904afa5dc9d (patch) | |
| tree | d0bfc0fc195bba02b2887e6bd34bdbda7af1e5d6 /include | |
| parent | f9b6a1575d9f1ca192e4cb60e547aa66f08baa3f (diff) | |
i.MX31: add a simple gpio driver
This is a minimal driver, so far only managing output. It will
be used by the mxc_spi.c driver.
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-arm/arch-mx31/mx31.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/asm-arm/arch-mx31/mx31.h b/include/asm-arm/arch-mx31/mx31.h index 0552c27ce..1d475dde7 100644 --- a/include/asm-arm/arch-mx31/mx31.h +++ b/include/asm-arm/arch-mx31/mx31.h @@ -27,4 +27,24 @@ extern u32 mx31_get_ipg_clk(void); extern void mx31_gpio_mux(unsigned long mode); +enum mx31_gpio_direction { + MX31_GPIO_DIRECTION_IN, + MX31_GPIO_DIRECTION_OUT, +}; + +#ifdef CONFIG_MX31_GPIO +extern int mx31_gpio_direction(unsigned int gpio, + enum mx31_gpio_direction direction); +extern void mx31_gpio_set(unsigned int gpio, unsigned int value); +#else +static inline int mx31_gpio_direction(unsigned int gpio, + enum mx31_gpio_direction direction) +{ + return 1; +} +static inline void mx31_gpio_set(unsigned int gpio, unsigned int value) +{ +} +#endif + #endif /* __ASM_ARCH_MX31_H */ |