diff options
| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-08-06 23:36:12 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-08-06 23:36:12 -0700 |
| commit | 5e2aa2ed08e2e280121dc7cf5609c87d464f12ef (patch) | |
| tree | ca7d7b1480285e3b617fecc5b41f0ce150a82c32 /arch/arm/mach-at91/gpio.c | |
| parent | f62d14a8072b9756db36ba394e2b267470a40240 (diff) | |
| parent | fc8104bc5a3f6f49d79f45f2706f79f77a9fb2ae (diff) | |
Merge branch 'next' into for-linus
Prepare first round of input updates for 3.17.
Diffstat (limited to 'arch/arm/mach-at91/gpio.c')
| -rw-r--r-- | arch/arm/mach-at91/gpio.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c index a5afcf76550e..d3f05aaad8ba 100644 --- a/arch/arm/mach-at91/gpio.c +++ b/arch/arm/mach-at91/gpio.c @@ -29,6 +29,7 @@ #include <mach/at91_pio.h> #include "generic.h" +#include "gpio.h" #define MAX_NB_GPIO_PER_BANK 32 @@ -49,6 +50,7 @@ static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset); static void at91_gpiolib_dbg_show(struct seq_file *s, struct gpio_chip *chip); static void at91_gpiolib_set(struct gpio_chip *chip, unsigned offset, int val); static int at91_gpiolib_get(struct gpio_chip *chip, unsigned offset); +static int at91_gpiolib_get_direction(struct gpio_chip *chip, unsigned offset); static int at91_gpiolib_direction_output(struct gpio_chip *chip, unsigned offset, int val); static int at91_gpiolib_direction_input(struct gpio_chip *chip, @@ -60,6 +62,7 @@ static int at91_gpiolib_to_irq(struct gpio_chip *chip, unsigned offset); .chip = { \ .label = name, \ .request = at91_gpiolib_request, \ + .get_direction = at91_gpiolib_get_direction, \ .direction_input = at91_gpiolib_direction_input, \ .direction_output = at91_gpiolib_direction_output, \ .get = at91_gpiolib_get, \ @@ -799,6 +802,17 @@ static int at91_gpiolib_request(struct gpio_chip *chip, unsigned offset) return 0; } +static int at91_gpiolib_get_direction(struct gpio_chip *chip, unsigned offset) +{ + struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip); + void __iomem *pio = at91_gpio->regbase; + unsigned mask = 1 << offset; + u32 osr; + + osr = __raw_readl(pio + PIO_OSR); + return !(osr & mask); +} + static int at91_gpiolib_direction_input(struct gpio_chip *chip, unsigned offset) { |