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| author | Hongzhou Yang <hongzhou.yang@mediatek.com> | 2015-11-17 14:17:13 -0800 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-11-18 14:55:07 +0100 |
| commit | f97c2309667b501c03fcc1c8b3595f5ca0a1ff01 (patch) | |
| tree | a04629dfda33de8567da5c7210388d13be61e575 /drivers/pinctrl/mediatek | |
| parent | c3dd25cc78150d4db8c7a1842884553202d1fd43 (diff) | |
| download | linux-f97c2309667b501c03fcc1c8b3595f5ca0a1ff01.tar.gz linux-f97c2309667b501c03fcc1c8b3595f5ca0a1ff01.tar.bz2 linux-f97c2309667b501c03fcc1c8b3595f5ca0a1ff01.zip | |
pinctrl: mediatek: Add get_direction support.
Since Linux gpio framework return 0 for output, 1 for input.
But HW use 0 stands for input, and 1 stands for output.
So use negative to correct it.
And gpio_chip.get is used to get input value, no need to get
output value, so removing it.
Signed-off-by: Hongzhou Yang <hongzhou.yang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/mediatek')
| -rw-r--r-- | drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c index f307f1d27d64..5c717275a7fa 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c @@ -747,7 +747,7 @@ static int mtk_gpio_get_direction(struct gpio_chip *chip, unsigned offset) reg_addr = mtk_get_port(pctl, offset) + pctl->devdata->dir_offset; bit = BIT(offset & 0xf); regmap_read(pctl->regmap1, reg_addr, &read_val); - return !!(read_val & bit); + return !(read_val & bit); } static int mtk_gpio_get(struct gpio_chip *chip, unsigned offset) @@ -757,12 +757,8 @@ static int mtk_gpio_get(struct gpio_chip *chip, unsigned offset) unsigned int read_val = 0; struct mtk_pinctrl *pctl = dev_get_drvdata(chip->dev); - if (mtk_gpio_get_direction(chip, offset)) - reg_addr = mtk_get_port(pctl, offset) + - pctl->devdata->dout_offset; - else - reg_addr = mtk_get_port(pctl, offset) + - pctl->devdata->din_offset; + reg_addr = mtk_get_port(pctl, offset) + + pctl->devdata->din_offset; bit = BIT(offset & 0xf); regmap_read(pctl->regmap1, reg_addr, &read_val); @@ -997,6 +993,7 @@ static struct gpio_chip mtk_gpio_chip = { .owner = THIS_MODULE, .request = gpiochip_generic_request, .free = gpiochip_generic_free, + .get_direction = mtk_gpio_get_direction, .direction_input = mtk_gpio_direction_input, .direction_output = mtk_gpio_direction_output, .get = mtk_gpio_get, |