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pinctrl: mediatek: paris: Fix PIN_CONFIG_BIAS_* readback
When reading back pin bias settings, if the pin is not in the
corresponding bias state, the function should return -EINVAL.
Fix this in the mediatek-paris pinctrl library so that the read back
state is not littered with bogus a "input bias disabled" combined with
"pull up" or "pull down" states.
Fixes: 805250982b
("pinctrl: mediatek: add pinctrl-paris that implements the vendor dt-bindings")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220308100956.2750295-3-wenst@chromium.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
parent
188e5834b9
commit
3e8c6bc608
1 changed files with 6 additions and 10 deletions
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@ -96,20 +96,16 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev,
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err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret);
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if (err)
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goto out;
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if (ret == MTK_PUPD_SET_R1R0_00)
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ret = MTK_DISABLE;
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if (param == PIN_CONFIG_BIAS_DISABLE) {
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if (ret == MTK_PUPD_SET_R1R0_00)
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ret = MTK_DISABLE;
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if (ret != MTK_DISABLE)
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err = -EINVAL;
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} else if (param == PIN_CONFIG_BIAS_PULL_UP) {
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/* When desire to get pull-up value, return
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* error if current setting is pull-down
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*/
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if (!pullup)
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if (!pullup || ret == MTK_DISABLE)
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err = -EINVAL;
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} else if (param == PIN_CONFIG_BIAS_PULL_DOWN) {
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/* When desire to get pull-down value, return
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* error if current setting is pull-up
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*/
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if (pullup)
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if (pullup || ret == MTK_DISABLE)
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err = -EINVAL;
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}
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} else {
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