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| author | Linus Walleij <linus.walleij@linaro.org> | 2016-04-28 13:18:59 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-04-28 14:36:37 +0200 |
| commit | 3484f1be2dbf520ad150a0be11f04464b930a4e6 (patch) | |
| tree | 9c56208841f9307863fe7659888ff5e1c5c27a4d /drivers/gpio/gpio-pl061.c | |
| parent | 682366d5c93340b751bc547779209f502a80762e (diff) | |
| download | lwn-3484f1be2dbf520ad150a0be11f04464b930a4e6.tar.gz lwn-3484f1be2dbf520ad150a0be11f04464b930a4e6.zip | |
gpio: pl061: implement .get_direction()
Implement this callback so that the driver reports correctly
the direction setting of each line.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-pl061.c')
| -rw-r--r-- | drivers/gpio/gpio-pl061.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c index 70eb9ada002e..6e3c1430616f 100644 --- a/drivers/gpio/gpio-pl061.c +++ b/drivers/gpio/gpio-pl061.c @@ -61,6 +61,13 @@ struct pl061_gpio { #endif }; +static int pl061_get_direction(struct gpio_chip *gc, unsigned offset) +{ + struct pl061_gpio *chip = gpiochip_get_data(gc); + + return !(readb(chip->base + GPIODIR) & BIT(offset)); +} + static int pl061_direction_input(struct gpio_chip *gc, unsigned offset) { struct pl061_gpio *chip = gpiochip_get_data(gc); @@ -315,6 +322,7 @@ static int pl061_probe(struct amba_device *adev, const struct amba_id *id) chip->gc.free = gpiochip_generic_free; } + chip->gc.get_direction = pl061_get_direction; chip->gc.direction_input = pl061_direction_input; chip->gc.direction_output = pl061_direction_output; chip->gc.get = pl061_get_value; |