diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2010-05-18 14:23:36 +0400 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2010-05-19 13:15:02 +0400 |
| commit | 838c6d499b780c42fccbbdfecc0f5dcc471d0ef3 (patch) | |
| tree | 8dbbe6ad6f940c390ea62c273470480ebdde2d63 /arch/arm/plat-samsung/include | |
| parent | 14b8a0f92b309ff452a8c339abd9a096d00b210f (diff) | |
| download | linux-838c6d499b780c42fccbbdfecc0f5dcc471d0ef3.tar.xz | |
ARM: SAMSUNG: move driver strength gpio configuration helper to common dir
Driver strength parameter can be changed not only on S5PC100 but also
on S5PV210/S5PC110 platforms, so move the helper functions to the common
plat-samsung directory.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-samsung/include')
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/gpio-cfg.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg.h b/arch/arm/plat-samsung/include/plat/gpio-cfg.h index 8d01e853df39..34efdd2b032c 100644 --- a/arch/arm/plat-samsung/include/plat/gpio-cfg.h +++ b/arch/arm/plat-samsung/include/plat/gpio-cfg.h @@ -25,6 +25,7 @@ #define __PLAT_GPIO_CFG_H __FILE__ typedef unsigned int __bitwise__ s3c_gpio_pull_t; +typedef unsigned int __bitwise__ s5p_gpio_drvstr_t; /* forward declaration if gpio-core.h hasn't been included */ struct s3c_gpio_chip; @@ -118,4 +119,33 @@ extern int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull); */ extern s3c_gpio_pull_t s3c_gpio_getpull(unsigned int pin); +/* Define values for the drvstr available for each gpio pin. + * + * These values control the value of the output signal driver strength, + * configurable on most pins on the S5C series. + */ +#define S5P_GPIO_DRVSTR_LV1 ((__force s5p_gpio_drvstr_t)0x00) +#define S5P_GPIO_DRVSTR_LV2 ((__force s5p_gpio_drvstr_t)0x01) +#define S5P_GPIO_DRVSTR_LV3 ((__force s5p_gpio_drvstr_t)0x10) +#define S5P_GPIO_DRVSTR_LV4 ((__force s5p_gpio_drvstr_t)0x11) + +/** + * s5c_gpio_get_drvstr() - get the driver streght value of a gpio pin + * @pin: The pin number to get the settings for + * + * Read the driver streght value for the specified pin. +*/ +extern s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin); + +/** + * s3c_gpio_set_drvstr() - set the driver streght value of a gpio pin + * @pin: The pin number to configure the driver streght value + * @drvstr: The new value of the driver strength + * + * This function sets the driver strength value for the specified pin. + * It will return 0 if successfull, or a negative error code if the pin + * cannot support the requested setting. +*/ +extern int s5p_gpio_set_drvstr(unsigned int pin, s5p_gpio_drvstr_t drvstr); + #endif /* __PLAT_GPIO_CFG_H */ |