diff options
| author | Light Hsieh <light.hsieh@mediatek.com> | 2020-01-22 09:53:12 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-02-14 13:32:49 +0300 |
| commit | 1bea6afbc84206cd939ae227cf81d6c824af6fd7 (patch) | |
| tree | a5031096b8086688ab45d6a6892fbb8e84ac5461 /drivers/pinctrl/mediatek/pinctrl-paris.c | |
| parent | 3599cc525486be6681640ff3083376c001264c61 (diff) | |
| download | linux-1bea6afbc84206cd939ae227cf81d6c824af6fd7.tar.xz | |
pinctrl: mediatek: Refine mtk_pinconf_get()
Correct cases for PIN_CONFIG_SLEW_RATE, PIN_CONFIG_INPUT_SCHMITT_ENABLE,
and PIN_CONFIG_OUTPUT_ENABLE -
Use variable ret to receive value in mtk_hw_get_value() (instead of
variable val) since pinconf_to_config_packed() at end of this function
use variable ret to pack config value.
Signed-off-by: Light Hsieh <light.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1579675994-7001-4-git-send-email-light.hsieh@mediatek.com
Acked-by: Sean Wang <sean.wang@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/mediatek/pinctrl-paris.c')
| -rw-r--r-- | drivers/pinctrl/mediatek/pinctrl-paris.c | 40 |
1 files changed, 15 insertions, 25 deletions
diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c index 2f0750092fa0..d09a726beece 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -78,7 +78,7 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, { struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev); u32 param = pinconf_to_config_param(*config); - int val, val2, err, reg, ret = 1; + int err, reg, ret = 1; const struct mtk_pin_desc *desc; if (pin >= hw->soc->npins) { @@ -107,17 +107,11 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, err = -ENOTSUPP; break; case PIN_CONFIG_SLEW_RATE: - err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_SR, &val); - if (err) - return err; - - if (!val) - return -EINVAL; - + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_SR, &ret); break; case PIN_CONFIG_INPUT_ENABLE: case PIN_CONFIG_OUTPUT_ENABLE: - err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DIR, &val); + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DIR, &ret); if (err) goto out; /* CONFIG Current direction return value @@ -128,20 +122,22 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, * input 1 (= reverse HW value) */ if (param == PIN_CONFIG_INPUT_ENABLE) - val = !val; + ret = !ret; break; case PIN_CONFIG_INPUT_SCHMITT_ENABLE: - err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DIR, &val); + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DIR, &ret); if (err) - return err; - - err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_SMT, &val2); - if (err) - return err; + goto out; + /* return error when in output mode + * because schmitt trigger only work in input mode + */ + if (ret) { + err = -EINVAL; + goto out; + } - if (val || !val2) - return -EINVAL; + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_SMT, &ret); break; case PIN_CONFIG_DRIVE_STRENGTH: @@ -154,13 +150,7 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev, case MTK_PIN_CONFIG_RDSEL: reg = (param == MTK_PIN_CONFIG_TDSEL) ? PINCTRL_PIN_REG_TDSEL : PINCTRL_PIN_REG_RDSEL; - - err = mtk_hw_get_value(hw, desc, reg, &val); - if (err) - return err; - - ret = val; - + err = mtk_hw_get_value(hw, desc, reg, &ret); break; case MTK_PIN_CONFIG_PU_ADV: case MTK_PIN_CONFIG_PD_ADV: |