diff options
Diffstat (limited to 'arch/arm/plat-samsung/include/plat/gpio-cfg.h')
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/gpio-cfg.h | 81 |
1 files changed, 80 insertions, 1 deletions
diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg.h b/arch/arm/plat-samsung/include/plat/gpio-cfg.h index 1762dcb..943789c 100644 --- a/arch/arm/plat-samsung/include/plat/gpio-cfg.h +++ b/arch/arm/plat-samsung/include/plat/gpio-cfg.h @@ -26,6 +26,8 @@ typedef unsigned int __bitwise__ s3c_gpio_pull_t; typedef unsigned int __bitwise__ s5p_gpio_drvstr_t; +typedef unsigned int __bitwise__ s5p_gpio_pd_cfg_t; +typedef unsigned int __bitwise__ s5p_gpio_pd_pull_t; /* forward declaration if gpio-core.h hasn't been included */ struct s3c_gpio_chip; @@ -125,12 +127,30 @@ extern int s3c_gpio_cfgpin_range(unsigned int start, unsigned int nr, * * These values control the state of the weak pull-{up,down} resistors * available on most pins on the S3C series. Not all chips support both - * up or down settings, and it may be dependent on the chip that is being + * up or down settings, and it may be dependant on the chip that is being * used to whether the particular mode is available. */ +#if defined(CONFIG_ARCH_S5PV310) || defined(CONFIG_ARCH_EXYNOS) +#define S3C_GPIO_PULL_NONE ((__force s3c_gpio_pull_t)0x00) +#define S3C_GPIO_PULL_DOWN ((__force s3c_gpio_pull_t)0x01) +#define S3C_GPIO_PULL_UP ((__force s3c_gpio_pull_t)0x03) +#else #define S3C_GPIO_PULL_NONE ((__force s3c_gpio_pull_t)0x00) #define S3C_GPIO_PULL_DOWN ((__force s3c_gpio_pull_t)0x01) #define S3C_GPIO_PULL_UP ((__force s3c_gpio_pull_t)0x02) +#endif + +#if defined(CONFIG_ARCH_S5PV310) || defined(CONFIG_ARCH_EXYNOS) +/* need to move to mach/gpio.h */ +#define S3C_GPIO_SLP_OUT0 ((__force s3c_gpio_pull_t)0x00) +#define S3C_GPIO_SLP_OUT1 ((__force s3c_gpio_pull_t)0x01) +#define S3C_GPIO_SLP_INPUT ((__force s3c_gpio_pull_t)0x02) +#define S3C_GPIO_SLP_PREV ((__force s3c_gpio_pull_t)0x03) + +#define S3C_GPIO_SETPIN_ZERO 0 +#define S3C_GPIO_SETPIN_ONE 1 +#define S3C_GPIO_SETPIN_NONE 2 +#endif /** * s3c_gpio_setpull() - set the state of a gpio pin pull resistor @@ -207,6 +227,65 @@ extern s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin); */ extern int s5p_gpio_set_drvstr(unsigned int pin, s5p_gpio_drvstr_t drvstr); +/* Define values for the power down configuration available for each gpio pin. + * + * These values control the state of the power down configuration resistors + * available on most pins on the S5P series. + */ +#define S5P_GPIO_PD_OUTPUT0 ((__force s5p_gpio_pd_cfg_t)0x00) +#define S5P_GPIO_PD_OUTPUT1 ((__force s5p_gpio_pd_cfg_t)0x01) +#define S5P_GPIO_PD_INPUT ((__force s5p_gpio_pd_cfg_t)0x02) +#define S5P_GPIO_PD_PREV_STATE ((__force s5p_gpio_pd_cfg_t)0x03) + +/** + * s5p_gpio_set_pd_cfg() - set the configuration of a gpio power down mode + * @pin: The pin number to configure the pull resistor. + * @pd_cfg: The configuration for the pwer down mode configuration register. + * + * This function sets the configuration of the power down mode resistor for the + * specified pin. It will return 0 if successful, or a negative error + * code if the pin cannot support the requested power down mode. + * +*/ +extern int s5p_gpio_set_pd_cfg(unsigned int pin, s5p_gpio_pd_cfg_t pd_cfg); + +/** + * s5p_gpio_get_pd_cfg() - get the power down mode configuration of a gpio pin + * @pin: The pin number to get the settings for + * + * Read the power down mode resistor value for the specified pin. +*/ +extern s5p_gpio_pd_cfg_t s5p_gpio_get_pd_cfg(unsigned int pin); + +/* Define values for the power down pull-{up,down} available for each gpio pin. + * + * These values control the state of the power down mode pull-{up,down} + * resistors available on most pins on the S5P series. + */ +#define S5P_GPIO_PD_UPDOWN_DISABLE ((__force s5p_gpio_pd_pull_t)0x00) +#define S5P_GPIO_PD_DOWN_ENABLE ((__force s5p_gpio_pd_pull_t)0x01) +#define S5P_GPIO_PD_UP_ENABLE ((__force s5p_gpio_pd_pull_t)0x03) + +/** + * s5p_gpio_set_pd_pull() - set the pull-{up,down} of a gpio pin power down mode + * @pin: The pin number to configure the pull resistor. + * @pd_pull: The configuration for the power down mode pull resistor. + * + * This function sets the configuration of the pull-{up,down} resistor for the + * specified pin. It will return 0 if successful, or a negative error + * code if the pin cannot support the requested pull setting. + * +*/ +extern int s5p_gpio_set_pd_pull(unsigned int pin, s5p_gpio_pd_pull_t pd_pull); + +/** + * s5p_gpio_get_pd_pull() - get the power down pull resistor config of gpio pin + * @pin: The pin number to get the settings for + * + * Read the power mode pull resistor value for the specified pin. +*/ +extern s5p_gpio_pd_pull_t s5p_gpio_get_pd_pull(unsigned int pin); + /** * s5p_register_gpio_interrupt() - register interrupt support for a gpio group * @pin: The pin number from the group to be registered |