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Diffstat (limited to 'arch/arm/mach-at91/gpio.c')
-rw-r--r--arch/arm/mach-at91/gpio.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index 12ed05bbdc5c..d3f05aaad8ba 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -50,6 +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,
@@ -61,6 +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, \
@@ -800,6 +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)
{