diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2012-04-24 19:03:26 +0530 |
|---|---|---|
| committer | Rohan Somvanshi <rsomvanshi@nvidia.com> | 2012-05-03 13:40:00 -0700 |
| commit | 38c804ed53aae503693338e0135a506a81ce2c11 (patch) | |
| tree | c49cb49e7e9d4686dab853a4a6da9354b9c4cef7 | |
| parent | da0d098d0ecc5cb99b8367f7067b4e57604347de (diff) | |
gpio: tegra: implement gpio_request and gpio_free.
Recent pinctrl discussions concluded that gpiolib APIs
should in fact do whatever is required to mux a GPIO onto
pins.
This change is based on the work done by Stephen Warren in mainline
kernel.
-----
commit 3e215d0a19c2a0c389bd9117573b6dd8e46f96a8
gpio: tegra: Hide tegra_gpio_enable/disable()
Recent pinctrl discussions concluded that gpiolib APIs should in fact do
whatever is required to mux a GPIO onto pins, by calling pinctrl APIs if
required. This change implements this for the Tegra GPIO driver, and removes
calls to the Tegra-specific APIs from drivers and board files.
----
Change-Id: I482ea5c177cf2ee6fa06ddac48b556f1508efacb
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/98466
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Pritesh Raithatha <praithatha@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
| -rw-r--r-- | drivers/gpio/gpio-tegra.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 3a0893f9cdc3..17e9c1cfdf4e 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -191,6 +191,7 @@ static int tegra_gpio_get(struct gpio_chip *chip, unsigned offset) static int tegra_gpio_direction_input(struct gpio_chip *chip, unsigned offset) { tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 0); + tegra_gpio_enable(offset); return 0; } @@ -199,6 +200,7 @@ static int tegra_gpio_direction_output(struct gpio_chip *chip, unsigned offset, { tegra_gpio_set(chip, offset, value); tegra_gpio_mask_write(GPIO_MSK_OE(offset), offset, 1); + tegra_gpio_enable(offset); return 0; } @@ -213,8 +215,20 @@ static int tegra_gpio_to_irq(struct gpio_chip *chip, unsigned offset) return TEGRA_GPIO_TO_IRQ(offset); } +static int tegra_gpio_request(struct gpio_chip *chip, unsigned offset) +{ + return 0; +} + +static void tegra_gpio_free(struct gpio_chip *chip, unsigned offset) +{ + tegra_gpio_disable(offset); +} + static struct gpio_chip tegra_gpio_chip = { .label = "tegra-gpio", + .request = tegra_gpio_request, + .free = tegra_gpio_free, .direction_input = tegra_gpio_direction_input, .get = tegra_gpio_get, .direction_output = tegra_gpio_direction_output, |