[PATCH RFC 1/3] pinctrl: mediatek: paris: Expose more configurations to GPIO set_config

["Nícolas F. R. A. Prado" <nfraprado@collabora.com>]

Currently the set_config callback in the gpio_chip registered by the
pinctrl_paris driver only supports PIN_CONFIG_INPUT_DEBOUNCE, despite
many other configurations already being implemented and available
through the pinctrl API for configuration of pins by the Devicetree and
other drivers.

Expose all configurations currently implemented through the GPIO API so
they can also be set from userspace, which is particularly useful to
allow testing them from userspace.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
---
 drivers/pinctrl/mediatek/pinctrl-paris.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c
index e12316c42698..668f8055a544 100644
--- a/drivers/pinctrl/mediatek/pinctrl-paris.c
+++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
@@ -255,10 +255,9 @@ static int mtk_pinconf_get(struct pinctrl_dev *pctldev,
 	return err;
 }
 
-static int mtk_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
+static int mtk_pinconf_set(struct mtk_pinctrl *hw, unsigned int pin,
 			   enum pin_config_param param, u32 arg)
 {
-	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
 	const struct mtk_pin_desc *desc;
 	int err = -ENOTSUPP;
 	u32 reg;
@@ -795,7 +794,7 @@ static int mtk_pconf_group_set(struct pinctrl_dev *pctldev, unsigned group,
 	int i, ret;
 
 	for (i = 0; i < num_configs; i++) {
-		ret = mtk_pinconf_set(pctldev, grp->pin,
+		ret = mtk_pinconf_set(hw, grp->pin,
 				      pinconf_to_config_param(configs[i]),
 				      pinconf_to_config_argument(configs[i]));
 		if (ret < 0)
@@ -937,18 +936,19 @@ static int mtk_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
 {
 	struct mtk_pinctrl *hw = gpiochip_get_data(chip);
 	const struct mtk_pin_desc *desc;
-	u32 debounce;
+	enum pin_config_param param = pinconf_to_config_param(config);
+	u32 arg = pinconf_to_config_argument(config);
 
 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[offset];
 
-	if (!hw->eint ||
-	    pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE ||
-	    desc->eint.eint_n == EINT_NA)
-		return -ENOTSUPP;
+	if (param == PIN_CONFIG_INPUT_DEBOUNCE) {
+		if (!hw->eint || desc->eint.eint_n == EINT_NA)
+			return -ENOTSUPP;
 
-	debounce = pinconf_to_config_argument(config);
+		return mtk_eint_set_debounce(hw->eint, desc->eint.eint_n, arg);
+	}
 
-	return mtk_eint_set_debounce(hw->eint, desc->eint.eint_n, debounce);
+	return mtk_pinconf_set(hw, offset, param, arg);
 }
 
 static int mtk_build_gpiochip(struct mtk_pinctrl *hw)

-- 
2.46.0