diff options
Diffstat (limited to 'drivers/gpio/gpio-lpc32xx.c')
| -rw-r--r-- | drivers/gpio/gpio-lpc32xx.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-lpc32xx.c b/drivers/gpio/gpio-lpc32xx.c index ddfacc5ce56d..61c2d08d37b6 100644 --- a/drivers/gpio/gpio-lpc32xx.c +++ b/drivers/gpio/gpio-lpc32xx.c @@ -59,12 +59,14 @@ #define GPO3_PIN_TO_BIT(x) (1 << (x)) #define GPIO012_PIN_IN_SEL(x, y) (((x) >> (y)) & 1) #define GPIO3_PIN_IN_SHIFT(x) ((x) == 5 ? 24 : 10 + (x)) -#define GPIO3_PIN_IN_SEL(x, y) ((x) >> GPIO3_PIN_IN_SHIFT(y)) +#define GPIO3_PIN_IN_SEL(x, y) (((x) >> GPIO3_PIN_IN_SHIFT(y)) & 1) #define GPIO3_PIN5_IN_SEL(x) (((x) >> 24) & 1) #define GPI3_PIN_IN_SEL(x, y) (((x) >> (y)) & 1) +#define GPO3_PIN_IN_SEL(x, y) (((x) >> (y)) & 1) struct gpio_regs { void __iomem *inp_state; + void __iomem *outp_state; void __iomem *outp_set; void __iomem *outp_clr; void __iomem *dir_set; @@ -145,6 +147,7 @@ static struct gpio_regs gpio_grp_regs_p2 = { static struct gpio_regs gpio_grp_regs_p3 = { .inp_state = LPC32XX_GPIO_P3_INP_STATE, + .outp_state = LPC32XX_GPIO_P3_OUTP_STATE, .outp_set = LPC32XX_GPIO_P3_OUTP_SET, .outp_clr = LPC32XX_GPIO_P3_OUTP_CLR, .dir_set = LPC32XX_GPIO_P2_DIR_SET, @@ -240,6 +243,12 @@ static int __get_gpi_state_p3(struct lpc32xx_gpio_chip *group, return GPI3_PIN_IN_SEL(__raw_readl(group->gpio_grp->inp_state), pin); } +static int __get_gpo_state_p3(struct lpc32xx_gpio_chip *group, + unsigned pin) +{ + return GPO3_PIN_IN_SEL(__raw_readl(group->gpio_grp->outp_state), pin); +} + /* * GENERIC_GPIO primitives. */ @@ -340,6 +349,13 @@ static void lpc32xx_gpo_set_value(struct gpio_chip *chip, unsigned pin, __set_gpo_level_p3(group, pin, value); } +static int lpc32xx_gpo_get_value(struct gpio_chip *chip, unsigned pin) +{ + struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip); + + return __get_gpo_state_p3(group, pin); +} + static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin) { if (pin < chip->ngpio) @@ -427,6 +443,7 @@ static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = { .label = "gpo_p3", .direction_output = lpc32xx_gpio_dir_out_always, .set = lpc32xx_gpo_set_value, + .get = lpc32xx_gpo_get_value, .request = lpc32xx_gpio_request, .base = LPC32XX_GPO_P3_GRP, .ngpio = LPC32XX_GPO_P3_MAX, |