diff options
| author | Bin Gao <bin.gao@linux.intel.com> | 2016-08-15 20:03:23 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-08-19 15:02:19 +0200 |
| commit | 7d9e59ce761f2ebe0bf57e6467cc13d932ee109b (patch) | |
| tree | fc8092840de21aaecc4f13652dcb0be01fc1536c /drivers | |
| parent | gpio: add Technologic I2C-FPGA gpio support (diff) | |
| download | linux-7d9e59ce761f2ebe0bf57e6467cc13d932ee109b.tar.xz linux-7d9e59ce761f2ebe0bf57e6467cc13d932ee109b.zip | |
gpio: wcove-gpio: add get_direction method
This patch adds .get_direction method for the gpio_chip structure
of the wcove_gpio driver.
Signed-off-by: Bin Gao <bin.gao@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpio-wcove.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-wcove.c b/drivers/gpio/gpio-wcove.c index f5c88df96eaa..e11d6a3fb641 100644 --- a/drivers/gpio/gpio-wcove.c +++ b/drivers/gpio/gpio-wcove.c @@ -164,6 +164,19 @@ static int wcove_gpio_dir_out(struct gpio_chip *chip, unsigned int gpio, CTLO_OUTPUT_SET | value); } +static int wcove_gpio_get_direction(struct gpio_chip *chip, unsigned int gpio) +{ + struct wcove_gpio *wg = gpiochip_get_data(chip); + unsigned int val; + int ret; + + ret = regmap_read(wg->regmap, to_reg(gpio, CTRL_OUT), &val); + if (ret) + return ret; + + return !(val & CTLO_DIR_OUT); +} + static int wcove_gpio_get(struct gpio_chip *chip, unsigned int gpio) { struct wcove_gpio *wg = gpiochip_get_data(chip); @@ -394,6 +407,7 @@ static int wcove_gpio_probe(struct platform_device *pdev) wg->chip.label = KBUILD_MODNAME; wg->chip.direction_input = wcove_gpio_dir_in; wg->chip.direction_output = wcove_gpio_dir_out; + wg->chip.get_direction = wcove_gpio_get_direction; wg->chip.get = wcove_gpio_get; wg->chip.set = wcove_gpio_set; wg->chip.set_single_ended = wcove_gpio_set_single_ended, |