pinctrl: mediatek: don't hardcode mode encoding in common code

MT8365 encode the pins mode differently than other
MTK pinctrl drivers that use the PINCTRL_MTK common code.

Add 3 new fields in mtk_pinctrl_devdata in order to store how
pin modes are encoded into the register. At the
same time update all the pinctrl driver that depends on
CONFIG_PINCTRL_MTK.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Link: https://lore.kernel.org/r/20210519162409.3755679-2-fparent@baylibre.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/pinctrl-mt2701.c

@@ -523,6 +523,9 @@ static const struct mtk_pinctrl_devdata mt2701_pinctrl_data = {
 	.port_shf = 4,
 	.port_mask = 0x1f,
 	.port_align = 4,
+	.mode_mask = 0xf,
+	.mode_per_reg = 5,
+	.mode_shf = 4,
 	.eint_hw = {
 		.port_mask = 6,
 		.ports     = 6,

drivers/pinctrl/mediatek/pinctrl-mt2712.c

@@ -576,6 +576,9 @@ static const struct mtk_pinctrl_devdata mt2712_pinctrl_data = {
 	.port_shf = 4,
 	.port_mask = 0xf,
 	.port_align = 4,
+	.mode_mask = 0xf,
+	.mode_per_reg = 5,
+	.mode_shf = 4,
 	.eint_hw = {
 		.port_mask = 0xf,
 		.ports     = 8,

drivers/pinctrl/mediatek/pinctrl-mt6397.c

@@ -33,6 +33,9 @@ static const struct mtk_pinctrl_devdata mt6397_pinctrl_data = {
 	.port_shf = 3,
 	.port_mask = 0x3,
 	.port_align = 2,
+	.mode_mask = 0xf,
+	.mode_per_reg = 5,
+	.mode_shf = 4,
 };
 
 static int mt6397_pinctrl_probe(struct platform_device *pdev)

drivers/pinctrl/mediatek/pinctrl-mt8127.c

@@ -292,6 +292,9 @@ static const struct mtk_pinctrl_devdata mt8127_pinctrl_data = {
 	.port_shf = 4,
 	.port_mask = 0xf,
 	.port_align = 4,
+	.mode_mask = 0xf,
+	.mode_per_reg = 5,
+	.mode_shf = 4,
 	.eint_hw = {
 		.port_mask = 7,
 		.ports     = 6,

drivers/pinctrl/mediatek/pinctrl-mt8135.c

@@ -305,6 +305,9 @@ static const struct mtk_pinctrl_devdata mt8135_pinctrl_data = {
 	.port_shf = 4,
 	.port_mask = 0xf,
 	.port_align = 4,
+	.mode_mask = 0xf,
+	.mode_per_reg = 5,
+	.mode_shf = 4,
 	.eint_hw = {
 		.port_mask = 7,
 		.ports     = 6,

drivers/pinctrl/mediatek/pinctrl-mt8167.c

@@ -324,6 +324,9 @@ static const struct mtk_pinctrl_devdata mt8167_pinctrl_data = {
 	.port_shf = 4,
 	.port_mask = 0xf,
 	.port_align = 4,
+	.mode_mask = 0xf,
+	.mode_per_reg = 5,
+	.mode_shf = 4,
 	.eint_hw = {
 		.port_mask = 7,
 		.ports     = 6,

drivers/pinctrl/mediatek/pinctrl-mt8173.c

@@ -332,6 +332,9 @@ static const struct mtk_pinctrl_devdata mt8173_pinctrl_data = {
 	.port_shf = 4,
 	.port_mask = 0xf,
 	.port_align = 4,
+	.mode_mask = 0xf,
+	.mode_per_reg = 5,
+	.mode_shf = 4,
 	.eint_hw = {
 		.port_mask = 7,
 		.ports     = 6,

drivers/pinctrl/mediatek/pinctrl-mt8516.c

@@ -324,6 +324,9 @@ static const struct mtk_pinctrl_devdata mt8516_pinctrl_data = {
 	.port_shf = 4,
 	.port_mask = 0xf,
 	.port_align = 4,
+	.mode_mask = 0xf,
+	.mode_per_reg = 5,
+	.mode_shf = 4,
 	.eint_hw = {
 		.port_mask = 7,
 		.ports     = 6,

drivers/pinctrl/mediatek/pinctrl-mtk-common.c

@@ -33,7 +33,6 @@
 #include "mtk-eint.h"
 #include "pinctrl-mtk-common.h"
 
-#define MAX_GPIO_MODE_PER_REG 5
 #define GPIO_MODE_BITS        3
 #define GPIO_MODE_PREFIX "GPIO"
 
@@ -61,7 +60,7 @@ static struct regmap *mtk_get_regmap(struct mtk_pinctrl *pctl,
 static unsigned int mtk_get_port(struct mtk_pinctrl *pctl, unsigned long pin)
 {
 	/* Different SoC has different mask and port shift. */
-	return ((pin >> 4) & pctl->devdata->port_mask)
+	return ((pin >> pctl->devdata->mode_shf) & pctl->devdata->port_mask)
 			<< pctl->devdata->port_shf;
 }
 
@@ -74,7 +73,7 @@ static int mtk_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
 	struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
 
 	reg_addr = mtk_get_port(pctl, offset) + pctl->devdata->dir_offset;
-	bit = BIT(offset & 0xf);
+	bit = BIT(offset & pctl->devdata->mode_mask);
 
 	if (pctl->devdata->spec_dir_set)
 		pctl->devdata->spec_dir_set(&reg_addr, offset);
@@ -96,7 +95,7 @@ static void mtk_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 	struct mtk_pinctrl *pctl = gpiochip_get_data(chip);
 
 	reg_addr = mtk_get_port(pctl, offset) + pctl->devdata->dout_offset;
-	bit = BIT(offset & 0xf);
+	bit = BIT(offset & pctl->devdata->mode_mask);
 
 	if (value)
 		reg_addr = SET_ADDR(reg_addr, pctl);
@@ -135,7 +134,7 @@ static int mtk_pconf_set_ies_smt(struct mtk_pinctrl *pctl, unsigned pin,
 			pin, pctl->devdata->port_align, value, arg);
 	}
 
-	bit = BIT(pin & 0xf);
+	bit = BIT(offset & pctl->devdata->mode_mask);
 
 	if (arg == PIN_CONFIG_INPUT_ENABLE)
 		offset = pctl->devdata->ies_offset;
@@ -311,7 +310,7 @@ static int mtk_pconf_set_pull_select(struct mtk_pinctrl *pctl,
 		return -EINVAL;
 	}
 
-	bit = BIT(pin & 0xf);
+	bit = BIT(pin & pctl->devdata->mode_mask);
 	if (enable)
 		reg_pullen = SET_ADDR(mtk_get_port(pctl, pin) +
 			pctl->devdata->pullen_offset, pctl);
@@ -683,11 +682,11 @@ static int mtk_pmx_set_mode(struct pinctrl_dev *pctldev,
 		pctl->devdata->spec_pinmux_set(mtk_get_regmap(pctl, pin),
 					pin, mode);
 
-	reg_addr = ((pin / MAX_GPIO_MODE_PER_REG) << pctl->devdata->port_shf)
+	reg_addr = ((pin / pctl->devdata->mode_per_reg) << pctl->devdata->port_shf)
 			+ pctl->devdata->pinmux_offset;
 
 	mode &= mask;
-	bit = pin % MAX_GPIO_MODE_PER_REG;
+	bit = pin % pctl->devdata->mode_per_reg;
 	mask <<= (GPIO_MODE_BITS * bit);
 	val = (mode << (GPIO_MODE_BITS * bit));
 	return regmap_update_bits(mtk_get_regmap(pctl, pin),
@@ -798,7 +797,7 @@ static int mtk_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 	struct mtk_pinctrl *pctl = gpiochip_get_data(chip);
 
 	reg_addr =  mtk_get_port(pctl, offset) + pctl->devdata->dir_offset;
-	bit = BIT(offset & 0xf);
+	bit = BIT(offset & pctl->devdata->mode_mask);
 
 	if (pctl->devdata->spec_dir_set)
 		pctl->devdata->spec_dir_set(&reg_addr, offset);
@@ -820,7 +819,7 @@ static int mtk_gpio_get(struct gpio_chip *chip, unsigned offset)
 	reg_addr = mtk_get_port(pctl, offset) +
 		pctl->devdata->din_offset;
 
-	bit = BIT(offset & 0xf);
+	bit = BIT(offset & pctl->devdata->mode_mask);
 	regmap_read(pctl->regmap1, reg_addr, &read_val);
 	return !!(read_val & bit);
 }

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

@@ -254,6 +254,9 @@ struct mtk_pinctrl_devdata {
 	unsigned char  port_align;
 	struct mtk_eint_hw eint_hw;
 	struct mtk_eint_regs *eint_regs;
+	unsigned int mode_mask;
+	unsigned int mode_per_reg;
+	unsigned int mode_shf;
 };
 
 struct mtk_pinctrl {