pinctrl: mediatek: add ies register support to pinctrl-mtk-common-v2.c

Certain SoCs have to program an extra IES register to configure input
enabled mode so that we add it in the existing path as an option.

Signed-off-by: Ryder.Lee <ryder.lee@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/pinctrl-moore.c

@@ -244,15 +244,27 @@ static int mtk_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin,
 					       MTK_DISABLE);
 			if (err)
 				goto err;
-			/* else: fall through */
+
+			err = mtk_hw_set_value(hw, pin, PINCTRL_PIN_REG_DIR,
+					       MTK_OUTPUT);
+			if (err)
+				goto err;
+			break;
 		case PIN_CONFIG_INPUT_ENABLE:
-		case PIN_CONFIG_SLEW_RATE:
-			reg = (param == PIN_CONFIG_SLEW_RATE) ?
-			       PINCTRL_PIN_REG_SR : PINCTRL_PIN_REG_DIR;
 
-			arg = (param == PIN_CONFIG_INPUT_ENABLE) ? 0 :
-			      (param == PIN_CONFIG_OUTPUT_ENABLE) ? 1 : arg;
-			err = mtk_hw_set_value(hw, pin, reg, arg);
+			if (hw->soc->ies_present) {
+				mtk_hw_set_value(hw, pin, PINCTRL_PIN_REG_IES,
+						 MTK_ENABLE);
+			}
+
+			err = mtk_hw_set_value(hw, pin, PINCTRL_PIN_REG_DIR,
+					       MTK_INPUT);
+			if (err)
+				goto err;
+			break;
+		case PIN_CONFIG_SLEW_RATE:
+			err = mtk_hw_set_value(hw, pin, PINCTRL_PIN_REG_SR,
+					       arg);
 			if (err)
 				goto err;
 

drivers/pinctrl/mediatek/pinctrl-mt7622.c

@@ -767,6 +767,7 @@ static const struct mtk_pin_soc mt7622_data = {
 	.eint_hw = &mt7622_eint_hw,
 	.gpio_m	= 1,
 	.eint_m = 1,
+	.ies_present = false,
 	.bias_disable_set = mtk_pinconf_bias_disable_set,
 	.bias_disable_get = mtk_pinconf_bias_disable_get,
 	.bias_set = mtk_pinconf_bias_set,

drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h

@@ -54,6 +54,7 @@ enum {
 	PINCTRL_PIN_REG_PUPD,
 	PINCTRL_PIN_REG_R0,
 	PINCTRL_PIN_REG_R1,
+	PINCTRL_PIN_REG_IES,
 	PINCTRL_PIN_REG_MAX,
 };
 
@@ -151,6 +152,7 @@ struct mtk_pin_soc {
 	/* Specific parameters per SoC */
 	u8				gpio_m;
 	u8				eint_m;
+	bool				ies_present;
 
 	/* Specific pinconfig operations */
 	int (*bias_disable_set)(struct mtk_pinctrl *hw,