Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1138 insertions, 0 deletions

diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c
new file mode 100644
index 000000000..ad873bd05
--- /dev/null
+++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
@@ -0,0 +1,1138 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * MediaTek Pinctrl Paris Driver, which implement the vendor per-pin
+ * bindings for MediaTek SoC.
+ *
+ * Copyright (C) 2018 MediaTek Inc.
+ * Author: Sean Wang <sean.wang@mediatek.com>
+ *	   Zhiyong Tao <zhiyong.tao@mediatek.com>
+ *	   Hongzhou.Yang <hongzhou.yang@mediatek.com>
+ */
+
+#include <linux/gpio/driver.h>
+#include <linux/module.h>
+#include <dt-bindings/pinctrl/mt65xx.h>
+#include "pinctrl-paris.h"
+
+#define PINCTRL_PINCTRL_DEV	KBUILD_MODNAME
+
+/* Custom pinconf parameters */
+#define MTK_PIN_CONFIG_TDSEL	(PIN_CONFIG_END + 1)
+#define MTK_PIN_CONFIG_RDSEL	(PIN_CONFIG_END + 2)
+#define MTK_PIN_CONFIG_PU_ADV	(PIN_CONFIG_END + 3)
+#define MTK_PIN_CONFIG_PD_ADV	(PIN_CONFIG_END + 4)
+#define MTK_PIN_CONFIG_DRV_ADV	(PIN_CONFIG_END + 5)
+
+static const struct pinconf_generic_params mtk_custom_bindings[] = {
+	{"mediatek,tdsel",	MTK_PIN_CONFIG_TDSEL,		0},
+	{"mediatek,rdsel",	MTK_PIN_CONFIG_RDSEL,		0},
+	{"mediatek,pull-up-adv", MTK_PIN_CONFIG_PU_ADV,		1},
+	{"mediatek,pull-down-adv", MTK_PIN_CONFIG_PD_ADV,	1},
+	{"mediatek,drive-strength-adv", MTK_PIN_CONFIG_DRV_ADV,	2},
+};
+
+#ifdef CONFIG_DEBUG_FS
+static const struct pin_config_item mtk_conf_items[] = {
+	PCONFDUMP(MTK_PIN_CONFIG_TDSEL, "tdsel", NULL, true),
+	PCONFDUMP(MTK_PIN_CONFIG_RDSEL, "rdsel", NULL, true),
+	PCONFDUMP(MTK_PIN_CONFIG_PU_ADV, "pu-adv", NULL, true),
+	PCONFDUMP(MTK_PIN_CONFIG_PD_ADV, "pd-adv", NULL, true),
+	PCONFDUMP(MTK_PIN_CONFIG_DRV_ADV, "drive-strength-adv", NULL, true),
+};
+#endif
+
+static const char * const mtk_gpio_functions[] = {
+	"func0", "func1", "func2", "func3",
+	"func4", "func5", "func6", "func7",
+	"func8", "func9", "func10", "func11",
+	"func12", "func13", "func14", "func15",
+};
+
+/*
+ * This section supports converting to/from custom MTK_PIN_CONFIG_DRV_ADV
+ * and standard PIN_CONFIG_DRIVE_STRENGTH_UA pin configs.
+ *
+ * The custom value encodes three hardware bits as follows:
+ *
+ *   |           Bits           |
+ *   | 2 (E1) | 1 (E0) | 0 (EN) | drive strength (uA)
+ *   ------------------------------------------------
+ *   |    x   |    x   |    0   | disabled, use standard drive strength
+ *   -------------------------------------
+ *   |    0   |    0   |    1   |  125 uA
+ *   |    0   |    1   |    1   |  250 uA
+ *   |    1   |    0   |    1   |  500 uA
+ *   |    1   |    1   |    1   | 1000 uA
+ */
+static const int mtk_drv_adv_uA[] = { 125, 250, 500, 1000 };
+
+static int mtk_drv_adv_to_uA(int val)
+{
+	/* This should never happen. */
+	if (WARN_ON_ONCE(val < 0 || val > 7))
+		return -EINVAL;
+
+	/* Bit 0 simply enables this hardware part */
+	if (!(val & BIT(0)))
+		return -EINVAL;
+
+	return mtk_drv_adv_uA[(val >> 1)];
+}
+
+static int mtk_drv_uA_to_adv(int val)
+{
+	switch (val) {
+	case 125:
+		return 0x1;
+	case 250:
+		return 0x3;
+	case 500:
+		return 0x5;
+	case 1000:
+		return 0x7;
+	}
+
+	return -EINVAL;
+}
+
+static int mtk_pinmux_gpio_request_enable(struct pinctrl_dev *pctldev,
+					  struct pinctrl_gpio_range *range,
+					  unsigned int pin)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+	const struct mtk_pin_desc *desc;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
+
+	return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_MODE,
+				hw->soc->gpio_m);
+}
+
+static int mtk_pinmux_gpio_set_direction(struct pinctrl_dev *pctldev,
+					 struct pinctrl_gpio_range *range,
+					 unsigned int pin, bool input)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+	const struct mtk_pin_desc *desc;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
+
+	/* hardware would take 0 as input direction */
+	return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DIR, !input);
+}
+
+static int mtk_pinconf_get(struct pinctrl_dev *pctldev,
+			   unsigned int pin, unsigned long *config)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+	u32 param = pinconf_to_config_param(*config);
+	int pullup, reg, err = -ENOTSUPP, ret = 1;
+	const struct mtk_pin_desc *desc;
+
+	if (pin >= hw->soc->npins)
+		return -EINVAL;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
+
+	switch (param) {
+	case PIN_CONFIG_BIAS_DISABLE:
+	case PIN_CONFIG_BIAS_PULL_UP:
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		if (!hw->soc->bias_get_combo)
+			break;
+		err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret);
+		if (err)
+			break;
+		if (ret == MTK_PUPD_SET_R1R0_00)
+			ret = MTK_DISABLE;
+		if (param == PIN_CONFIG_BIAS_DISABLE) {
+			if (ret != MTK_DISABLE)
+				err = -EINVAL;
+		} else if (param == PIN_CONFIG_BIAS_PULL_UP) {
+			if (!pullup || ret == MTK_DISABLE)
+				err = -EINVAL;
+		} else if (param == PIN_CONFIG_BIAS_PULL_DOWN) {
+			if (pullup || ret == MTK_DISABLE)
+				err = -EINVAL;
+		}
+		break;
+	case PIN_CONFIG_SLEW_RATE:
+		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, &ret);
+		if (err)
+			break;
+		/*     CONFIG     Current direction return value
+		 * -------------  ----------------- ----------------------
+		 * OUTPUT_ENABLE       output       1 (= HW value)
+		 *                     input        0 (= HW value)
+		 * INPUT_ENABLE        output       0 (= reverse HW value)
+		 *                     input        1 (= reverse HW value)
+		 */
+		if (param == PIN_CONFIG_INPUT_ENABLE)
+			ret = !ret;
+
+		break;
+	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+		err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DIR, &ret);
+		if (err)
+			break;
+		/* return error when in output mode
+		 * because schmitt trigger only work in input mode
+		 */
+		if (ret) {
+			err = -EINVAL;
+			break;
+		}
+
+		err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_SMT, &ret);
+		break;
+	case PIN_CONFIG_DRIVE_STRENGTH:
+		if (!hw->soc->drive_get)
+			break;
+
+		if (hw->soc->adv_drive_get) {
+			err = hw->soc->adv_drive_get(hw, desc, &ret);
+			if (!err) {
+				err = mtk_drv_adv_to_uA(ret);
+				if (err > 0) {
+					/* PIN_CONFIG_DRIVE_STRENGTH_UA used */
+					err = -EINVAL;
+					break;
+				}
+			}
+		}
+
+		err = hw->soc->drive_get(hw, desc, &ret);
+		break;
+	case PIN_CONFIG_DRIVE_STRENGTH_UA:
+		if (!hw->soc->adv_drive_get)
+			break;
+
+		err = hw->soc->adv_drive_get(hw, desc, &ret);
+		if (err)
+			break;
+		err = mtk_drv_adv_to_uA(ret);
+		if (err < 0)
+			break;
+
+		ret = err;
+		err = 0;
+		break;
+	case MTK_PIN_CONFIG_TDSEL:
+	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, &ret);
+		break;
+	case MTK_PIN_CONFIG_PU_ADV:
+	case MTK_PIN_CONFIG_PD_ADV:
+		if (!hw->soc->adv_pull_get)
+			break;
+		pullup = param == MTK_PIN_CONFIG_PU_ADV;
+		err = hw->soc->adv_pull_get(hw, desc, pullup, &ret);
+		break;
+	case MTK_PIN_CONFIG_DRV_ADV:
+		if (!hw->soc->adv_drive_get)
+			break;
+		err = hw->soc->adv_drive_get(hw, desc, &ret);
+		break;
+	}
+
+	if (!err)
+		*config = pinconf_to_config_packed(param, ret);
+
+	return err;
+}
+
+static int mtk_pinconf_set(struct pinctrl_dev *pctldev, 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;
+
+	if (pin >= hw->soc->npins)
+		return -EINVAL;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
+
+	switch ((u32)param) {
+	case PIN_CONFIG_BIAS_DISABLE:
+		if (!hw->soc->bias_set_combo)
+			break;
+		err = hw->soc->bias_set_combo(hw, desc, 0, MTK_DISABLE);
+		break;
+	case PIN_CONFIG_BIAS_PULL_UP:
+		if (!hw->soc->bias_set_combo)
+			break;
+		err = hw->soc->bias_set_combo(hw, desc, 1, arg);
+		break;
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		if (!hw->soc->bias_set_combo)
+			break;
+		err = hw->soc->bias_set_combo(hw, desc, 0, arg);
+		break;
+	case PIN_CONFIG_OUTPUT_ENABLE:
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_SMT,
+				       MTK_DISABLE);
+		/* Keep set direction to consider the case that a GPIO pin
+		 *  does not have SMT control
+		 */
+		if (err != -ENOTSUPP)
+			break;
+
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DIR,
+				       MTK_OUTPUT);
+		break;
+	case PIN_CONFIG_INPUT_ENABLE:
+		/* regard all non-zero value as enable */
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_IES, !!arg);
+		if (err)
+			break;
+
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DIR,
+				       MTK_INPUT);
+		break;
+	case PIN_CONFIG_SLEW_RATE:
+		/* regard all non-zero value as enable */
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_SR, !!arg);
+		break;
+	case PIN_CONFIG_OUTPUT:
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DO,
+				       arg);
+		if (err)
+			break;
+
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DIR,
+				       MTK_OUTPUT);
+		break;
+	case PIN_CONFIG_INPUT_SCHMITT:
+	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+		/* arg = 1: Input mode & SMT enable ;
+		 * arg = 0: Output mode & SMT disable
+		 */
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DIR, !arg);
+		if (err)
+			break;
+
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_SMT, !!arg);
+		break;
+	case PIN_CONFIG_DRIVE_STRENGTH:
+		if (!hw->soc->drive_set)
+			break;
+		err = hw->soc->drive_set(hw, desc, arg);
+		break;
+	case PIN_CONFIG_DRIVE_STRENGTH_UA:
+		if (!hw->soc->adv_drive_set)
+			break;
+
+		err = mtk_drv_uA_to_adv(arg);
+		if (err < 0)
+			break;
+		err = hw->soc->adv_drive_set(hw, desc, err);
+		break;
+	case MTK_PIN_CONFIG_TDSEL:
+	case MTK_PIN_CONFIG_RDSEL:
+		reg = (param == MTK_PIN_CONFIG_TDSEL) ?
+		       PINCTRL_PIN_REG_TDSEL : PINCTRL_PIN_REG_RDSEL;
+		err = mtk_hw_set_value(hw, desc, reg, arg);
+		break;
+	case MTK_PIN_CONFIG_PU_ADV:
+	case MTK_PIN_CONFIG_PD_ADV:
+		if (!hw->soc->adv_pull_set)
+			break;
+		err = hw->soc->adv_pull_set(hw, desc,
+					    (param == MTK_PIN_CONFIG_PU_ADV),
+					    arg);
+		break;
+	case MTK_PIN_CONFIG_DRV_ADV:
+		if (!hw->soc->adv_drive_set)
+			break;
+		err = hw->soc->adv_drive_set(hw, desc, arg);
+		break;
+	}
+
+	return err;
+}
+
+static struct mtk_pinctrl_group *
+mtk_pctrl_find_group_by_pin(struct mtk_pinctrl *hw, u32 pin)
+{
+	int i;
+
+	for (i = 0; i < hw->soc->ngrps; i++) {
+		struct mtk_pinctrl_group *grp = hw->groups + i;
+
+		if (grp->pin == pin)
+			return grp;
+	}
+
+	return NULL;
+}
+
+static const struct mtk_func_desc *
+mtk_pctrl_find_function_by_pin(struct mtk_pinctrl *hw, u32 pin_num, u32 fnum)
+{
+	const struct mtk_pin_desc *pin = hw->soc->pins + pin_num;
+	const struct mtk_func_desc *func = pin->funcs;
+
+	while (func && func->name) {
+		if (func->muxval == fnum)
+			return func;
+		func++;
+	}
+
+	return NULL;
+}
+
+static bool mtk_pctrl_is_function_valid(struct mtk_pinctrl *hw, u32 pin_num,
+					u32 fnum)
+{
+	int i;
+
+	for (i = 0; i < hw->soc->npins; i++) {
+		const struct mtk_pin_desc *pin = hw->soc->pins + i;
+
+		if (pin->number == pin_num) {
+			const struct mtk_func_desc *func = pin->funcs;
+
+			while (func && func->name) {
+				if (func->muxval == fnum)
+					return true;
+				func++;
+			}
+
+			break;
+		}
+	}
+
+	return false;
+}
+
+static int mtk_pctrl_dt_node_to_map_func(struct mtk_pinctrl *pctl,
+					 u32 pin, u32 fnum,
+					 struct mtk_pinctrl_group *grp,
+					 struct pinctrl_map **map,
+					 unsigned *reserved_maps,
+					 unsigned *num_maps)
+{
+	bool ret;
+
+	if (*num_maps == *reserved_maps)
+		return -ENOSPC;
+
+	(*map)[*num_maps].type = PIN_MAP_TYPE_MUX_GROUP;
+	(*map)[*num_maps].data.mux.group = grp->name;
+
+	ret = mtk_pctrl_is_function_valid(pctl, pin, fnum);
+	if (!ret) {
+		dev_err(pctl->dev, "invalid function %d on pin %d .\n",
+			fnum, pin);
+		return -EINVAL;
+	}
+
+	(*map)[*num_maps].data.mux.function = mtk_gpio_functions[fnum];
+	(*num_maps)++;
+
+	return 0;
+}
+
+static int mtk_pctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
+				       struct device_node *node,
+				       struct pinctrl_map **map,
+				       unsigned *reserved_maps,
+				       unsigned *num_maps)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+	int num_pins, num_funcs, maps_per_pin, i, err;
+	struct mtk_pinctrl_group *grp;
+	unsigned int num_configs;
+	bool has_config = false;
+	unsigned long *configs;
+	u32 pinfunc, pin, func;
+	struct property *pins;
+	unsigned reserve = 0;
+
+	pins = of_find_property(node, "pinmux", NULL);
+	if (!pins) {
+		dev_err(hw->dev, "missing pins property in node %pOFn .\n",
+			node);
+		return -EINVAL;
+	}
+
+	err = pinconf_generic_parse_dt_config(node, pctldev, &configs,
+					      &num_configs);
+	if (err)
+		return err;
+
+	if (num_configs)
+		has_config = true;
+
+	num_pins = pins->length / sizeof(u32);
+	num_funcs = num_pins;
+	maps_per_pin = 0;
+	if (num_funcs)
+		maps_per_pin++;
+	if (has_config && num_pins >= 1)
+		maps_per_pin++;
+
+	if (!num_pins || !maps_per_pin) {
+		err = -EINVAL;
+		goto exit;
+	}
+
+	reserve = num_pins * maps_per_pin;
+
+	err = pinctrl_utils_reserve_map(pctldev, map, reserved_maps, num_maps,
+					reserve);
+	if (err < 0)
+		goto exit;
+
+	for (i = 0; i < num_pins; i++) {
+		err = of_property_read_u32_index(node, "pinmux", i, &pinfunc);
+		if (err)
+			goto exit;
+
+		pin = MTK_GET_PIN_NO(pinfunc);
+		func = MTK_GET_PIN_FUNC(pinfunc);
+
+		if (pin >= hw->soc->npins ||
+		    func >= ARRAY_SIZE(mtk_gpio_functions)) {
+			dev_err(hw->dev, "invalid pins value.\n");
+			err = -EINVAL;
+			goto exit;
+		}
+
+		grp = mtk_pctrl_find_group_by_pin(hw, pin);
+		if (!grp) {
+			dev_err(hw->dev, "unable to match pin %d to group\n",
+				pin);
+			err = -EINVAL;
+			goto exit;
+		}
+
+		err = mtk_pctrl_dt_node_to_map_func(hw, pin, func, grp, map,
+						    reserved_maps, num_maps);
+		if (err < 0)
+			goto exit;
+
+		if (has_config) {
+			err = pinctrl_utils_add_map_configs(pctldev, map,
+							    reserved_maps,
+							    num_maps,
+							    grp->name,
+							    configs,
+							    num_configs,
+							    PIN_MAP_TYPE_CONFIGS_GROUP);
+			if (err < 0)
+				goto exit;
+		}
+	}
+
+	err = 0;
+
+exit:
+	kfree(configs);
+	return err;
+}
+
+static int mtk_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
+				    struct device_node *np_config,
+				    struct pinctrl_map **map,
+				    unsigned *num_maps)
+{
+	struct device_node *np;
+	unsigned reserved_maps;
+	int ret;
+
+	*map = NULL;
+	*num_maps = 0;
+	reserved_maps = 0;
+
+	for_each_child_of_node(np_config, np) {
+		ret = mtk_pctrl_dt_subnode_to_map(pctldev, np, map,
+						  &reserved_maps,
+						  num_maps);
+		if (ret < 0) {
+			pinctrl_utils_free_map(pctldev, *map, *num_maps);
+			of_node_put(np);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int mtk_pctrl_get_groups_count(struct pinctrl_dev *pctldev)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+
+	return hw->soc->ngrps;
+}
+
+static const char *mtk_pctrl_get_group_name(struct pinctrl_dev *pctldev,
+					    unsigned group)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+
+	return hw->groups[group].name;
+}
+
+static int mtk_pctrl_get_group_pins(struct pinctrl_dev *pctldev,
+				    unsigned group, const unsigned **pins,
+				    unsigned *num_pins)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+
+	*pins = (unsigned *)&hw->groups[group].pin;
+	*num_pins = 1;
+
+	return 0;
+}
+
+static int mtk_hw_get_value_wrap(struct mtk_pinctrl *hw, unsigned int gpio, int field)
+{
+	const struct mtk_pin_desc *desc;
+	int value, err;
+
+	if (gpio >= hw->soc->npins)
+		return -EINVAL;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio];
+
+	err = mtk_hw_get_value(hw, desc, field, &value);
+	if (err)
+		return err;
+
+	return value;
+}
+
+#define mtk_pctrl_get_pinmux(hw, gpio)			\
+	mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_MODE)
+
+#define mtk_pctrl_get_direction(hw, gpio)		\
+	mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_DIR)
+
+#define mtk_pctrl_get_out(hw, gpio)			\
+	mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_DO)
+
+#define mtk_pctrl_get_in(hw, gpio)			\
+	mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_DI)
+
+#define mtk_pctrl_get_smt(hw, gpio)			\
+	mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_SMT)
+
+#define mtk_pctrl_get_ies(hw, gpio)			\
+	mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_IES)
+
+#define mtk_pctrl_get_driving(hw, gpio)			\
+	mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_DRV)
+
+ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw,
+	unsigned int gpio, char *buf, unsigned int buf_len)
+{
+	int pinmux, pullup = 0, pullen = 0, len = 0, r1 = -1, r0 = -1, rsel = -1;
+	const struct mtk_pin_desc *desc;
+	u32 try_all_type = 0;
+
+	if (gpio >= hw->soc->npins)
+		return -EINVAL;
+
+	if (mtk_is_virt_gpio(hw, gpio))
+		return -EINVAL;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio];
+	pinmux = mtk_pctrl_get_pinmux(hw, gpio);
+	if (pinmux >= hw->soc->nfuncs)
+		pinmux -= hw->soc->nfuncs;
+
+	mtk_pinconf_bias_get_combo(hw, desc, &pullup, &pullen);
+
+	if (hw->soc->pull_type)
+		try_all_type = hw->soc->pull_type[desc->number];
+
+	if (hw->rsel_si_unit && (try_all_type & MTK_PULL_RSEL_TYPE)) {
+		rsel = pullen;
+		pullen = 1;
+	} else {
+		/* Case for: R1R0 */
+		if (pullen == MTK_PUPD_SET_R1R0_00) {
+			pullen = 0;
+			r1 = 0;
+			r0 = 0;
+		} else if (pullen == MTK_PUPD_SET_R1R0_01) {
+			pullen = 1;
+			r1 = 0;
+			r0 = 1;
+		} else if (pullen == MTK_PUPD_SET_R1R0_10) {
+			pullen = 1;
+			r1 = 1;
+			r0 = 0;
+		} else if (pullen == MTK_PUPD_SET_R1R0_11) {
+			pullen = 1;
+			r1 = 1;
+			r0 = 1;
+		}
+
+		/* Case for: RSEL */
+		if (pullen >= MTK_PULL_SET_RSEL_000 &&
+		    pullen <= MTK_PULL_SET_RSEL_111) {
+			rsel = pullen - MTK_PULL_SET_RSEL_000;
+			pullen = 1;
+		}
+	}
+	len += scnprintf(buf + len, buf_len - len,
+			"%03d: %1d%1d%1d%1d%02d%1d%1d%1d%1d",
+			gpio,
+			pinmux,
+			mtk_pctrl_get_direction(hw, gpio),
+			mtk_pctrl_get_out(hw, gpio),
+			mtk_pctrl_get_in(hw, gpio),
+			mtk_pctrl_get_driving(hw, gpio),
+			mtk_pctrl_get_smt(hw, gpio),
+			mtk_pctrl_get_ies(hw, gpio),
+			pullen,
+			pullup);
+
+	if (r1 != -1)
+		len += scnprintf(buf + len, buf_len - len, " (%1d %1d)", r1, r0);
+	else if (rsel != -1)
+		len += scnprintf(buf + len, buf_len - len, " (%1d)", rsel);
+
+	return len;
+}
+EXPORT_SYMBOL_GPL(mtk_pctrl_show_one_pin);
+
+#define PIN_DBG_BUF_SZ 96
+static void mtk_pctrl_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
+			  unsigned int gpio)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+	char buf[PIN_DBG_BUF_SZ] = { 0 };
+
+	(void)mtk_pctrl_show_one_pin(hw, gpio, buf, PIN_DBG_BUF_SZ);
+
+	seq_printf(s, "%s", buf);
+}
+
+static const struct pinctrl_ops mtk_pctlops = {
+	.dt_node_to_map		= mtk_pctrl_dt_node_to_map,
+	.dt_free_map		= pinctrl_utils_free_map,
+	.get_groups_count	= mtk_pctrl_get_groups_count,
+	.get_group_name		= mtk_pctrl_get_group_name,
+	.get_group_pins		= mtk_pctrl_get_group_pins,
+	.pin_dbg_show           = mtk_pctrl_dbg_show,
+};
+
+static int mtk_pmx_get_funcs_cnt(struct pinctrl_dev *pctldev)
+{
+	return ARRAY_SIZE(mtk_gpio_functions);
+}
+
+static const char *mtk_pmx_get_func_name(struct pinctrl_dev *pctldev,
+					 unsigned selector)
+{
+	return mtk_gpio_functions[selector];
+}
+
+static int mtk_pmx_get_func_groups(struct pinctrl_dev *pctldev,
+				   unsigned function,
+				   const char * const **groups,
+				   unsigned * const num_groups)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+
+	*groups = hw->grp_names;
+	*num_groups = hw->soc->ngrps;
+
+	return 0;
+}
+
+static int mtk_pmx_set_mux(struct pinctrl_dev *pctldev,
+			   unsigned function,
+			   unsigned group)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+	struct mtk_pinctrl_group *grp = hw->groups + group;
+	const struct mtk_func_desc *desc_func;
+	const struct mtk_pin_desc *desc;
+	bool ret;
+
+	ret = mtk_pctrl_is_function_valid(hw, grp->pin, function);
+	if (!ret) {
+		dev_err(hw->dev, "invalid function %d on group %d .\n",
+			function, group);
+		return -EINVAL;
+	}
+
+	desc_func = mtk_pctrl_find_function_by_pin(hw, grp->pin, function);
+	if (!desc_func)
+		return -EINVAL;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[grp->pin];
+	mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_MODE, desc_func->muxval);
+
+	return 0;
+}
+
+static const struct pinmux_ops mtk_pmxops = {
+	.get_functions_count	= mtk_pmx_get_funcs_cnt,
+	.get_function_name	= mtk_pmx_get_func_name,
+	.get_function_groups	= mtk_pmx_get_func_groups,
+	.set_mux		= mtk_pmx_set_mux,
+	.gpio_set_direction	= mtk_pinmux_gpio_set_direction,
+	.gpio_request_enable	= mtk_pinmux_gpio_request_enable,
+};
+
+static int mtk_pconf_group_get(struct pinctrl_dev *pctldev, unsigned group,
+			       unsigned long *config)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+	struct mtk_pinctrl_group *grp = &hw->groups[group];
+
+	 /* One pin per group only */
+	return mtk_pinconf_get(pctldev, grp->pin, config);
+}
+
+static int mtk_pconf_group_set(struct pinctrl_dev *pctldev, unsigned group,
+			       unsigned long *configs, unsigned num_configs)
+{
+	struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+	struct mtk_pinctrl_group *grp = &hw->groups[group];
+	bool drive_strength_uA_found = false;
+	bool adv_drve_strength_found = false;
+	int i, ret;
+
+	for (i = 0; i < num_configs; i++) {
+		ret = mtk_pinconf_set(pctldev, grp->pin,
+				      pinconf_to_config_param(configs[i]),
+				      pinconf_to_config_argument(configs[i]));
+		if (ret < 0)
+			return ret;
+
+		if (pinconf_to_config_param(configs[i]) == PIN_CONFIG_DRIVE_STRENGTH_UA)
+			drive_strength_uA_found = true;
+		if (pinconf_to_config_param(configs[i]) == MTK_PIN_CONFIG_DRV_ADV)
+			adv_drve_strength_found = true;
+	}
+
+	/*
+	 * Disable advanced drive strength mode if drive-strength-microamp
+	 * is not set. However, mediatek,drive-strength-adv takes precedence
+	 * as its value can explicitly request the mode be enabled or not.
+	 */
+	if (hw->soc->adv_drive_set && !drive_strength_uA_found &&
+	    !adv_drve_strength_found)
+		hw->soc->adv_drive_set(hw, &hw->soc->pins[grp->pin], 0);
+
+	return 0;
+}
+
+static const struct pinconf_ops mtk_confops = {
+	.pin_config_get = mtk_pinconf_get,
+	.pin_config_group_get	= mtk_pconf_group_get,
+	.pin_config_group_set	= mtk_pconf_group_set,
+	.is_generic = true,
+};
+
+static struct pinctrl_desc mtk_desc = {
+	.name = PINCTRL_PINCTRL_DEV,
+	.pctlops = &mtk_pctlops,
+	.pmxops = &mtk_pmxops,
+	.confops = &mtk_confops,
+	.owner = THIS_MODULE,
+};
+
+static int mtk_gpio_get_direction(struct gpio_chip *chip, unsigned int gpio)
+{
+	struct mtk_pinctrl *hw = gpiochip_get_data(chip);
+	const struct mtk_pin_desc *desc;
+	int value, err;
+
+	if (gpio >= hw->soc->npins)
+		return -EINVAL;
+
+	/*
+	 * "Virtual" GPIOs are always and only used for interrupts
+	 * Since they are only used for interrupts, they are always inputs
+	 */
+	if (mtk_is_virt_gpio(hw, gpio))
+		return 1;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio];
+
+	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DIR, &value);
+	if (err)
+		return err;
+
+	if (value)
+		return GPIO_LINE_DIRECTION_OUT;
+
+	return GPIO_LINE_DIRECTION_IN;
+}
+
+static int mtk_gpio_get(struct gpio_chip *chip, unsigned int gpio)
+{
+	struct mtk_pinctrl *hw = gpiochip_get_data(chip);
+	const struct mtk_pin_desc *desc;
+	int value, err;
+
+	if (gpio >= hw->soc->npins)
+		return -EINVAL;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio];
+
+	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DI, &value);
+	if (err)
+		return err;
+
+	return !!value;
+}
+
+static void mtk_gpio_set(struct gpio_chip *chip, unsigned int gpio, int value)
+{
+	struct mtk_pinctrl *hw = gpiochip_get_data(chip);
+	const struct mtk_pin_desc *desc;
+
+	if (gpio >= hw->soc->npins)
+		return;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio];
+
+	mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DO, !!value);
+}
+
+static int mtk_gpio_direction_input(struct gpio_chip *chip, unsigned int gpio)
+{
+	struct mtk_pinctrl *hw = gpiochip_get_data(chip);
+
+	if (gpio >= hw->soc->npins)
+		return -EINVAL;
+
+	return pinctrl_gpio_direction_input(chip->base + gpio);
+}
+
+static int mtk_gpio_direction_output(struct gpio_chip *chip, unsigned int gpio,
+				     int value)
+{
+	struct mtk_pinctrl *hw = gpiochip_get_data(chip);
+
+	if (gpio >= hw->soc->npins)
+		return -EINVAL;
+
+	mtk_gpio_set(chip, gpio, value);
+
+	return pinctrl_gpio_direction_output(chip->base + gpio);
+}
+
+static int mtk_gpio_to_irq(struct gpio_chip *chip, unsigned int offset)
+{
+	struct mtk_pinctrl *hw = gpiochip_get_data(chip);
+	const struct mtk_pin_desc *desc;
+
+	if (!hw->eint)
+		return -ENOTSUPP;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[offset];
+
+	if (desc->eint.eint_n == EINT_NA)
+		return -ENOTSUPP;
+
+	return mtk_eint_find_irq(hw->eint, desc->eint.eint_n);
+}
+
+static int mtk_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
+			       unsigned long config)
+{
+	struct mtk_pinctrl *hw = gpiochip_get_data(chip);
+	const struct mtk_pin_desc *desc;
+	u32 debounce;
+
+	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;
+
+	debounce = pinconf_to_config_argument(config);
+
+	return mtk_eint_set_debounce(hw->eint, desc->eint.eint_n, debounce);
+}
+
+static int mtk_build_gpiochip(struct mtk_pinctrl *hw)
+{
+	struct gpio_chip *chip = &hw->chip;
+	int ret;
+
+	chip->label		= PINCTRL_PINCTRL_DEV;
+	chip->parent		= hw->dev;
+	chip->request		= gpiochip_generic_request;
+	chip->free		= gpiochip_generic_free;
+	chip->get_direction	= mtk_gpio_get_direction;
+	chip->direction_input	= mtk_gpio_direction_input;
+	chip->direction_output	= mtk_gpio_direction_output;
+	chip->get		= mtk_gpio_get;
+	chip->set		= mtk_gpio_set;
+	chip->to_irq		= mtk_gpio_to_irq;
+	chip->set_config	= mtk_gpio_set_config;
+	chip->base		= -1;
+	chip->ngpio		= hw->soc->npins;
+	chip->of_gpio_n_cells	= 2;
+
+	ret = gpiochip_add_data(chip, hw);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int mtk_pctrl_build_state(struct platform_device *pdev)
+{
+	struct mtk_pinctrl *hw = platform_get_drvdata(pdev);
+	int i;
+
+	/* Allocate groups */
+	hw->groups = devm_kmalloc_array(&pdev->dev, hw->soc->ngrps,
+					sizeof(*hw->groups), GFP_KERNEL);
+	if (!hw->groups)
+		return -ENOMEM;
+
+	/* We assume that one pin is one group, use pin name as group name. */
+	hw->grp_names = devm_kmalloc_array(&pdev->dev, hw->soc->ngrps,
+					   sizeof(*hw->grp_names), GFP_KERNEL);
+	if (!hw->grp_names)
+		return -ENOMEM;
+
+	for (i = 0; i < hw->soc->npins; i++) {
+		const struct mtk_pin_desc *pin = hw->soc->pins + i;
+		struct mtk_pinctrl_group *group = hw->groups + i;
+
+		group->name = pin->name;
+		group->pin = pin->number;
+
+		hw->grp_names[i] = pin->name;
+	}
+
+	return 0;
+}
+
+int mtk_paris_pinctrl_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct pinctrl_pin_desc *pins;
+	struct mtk_pinctrl *hw;
+	int err, i;
+
+	hw = devm_kzalloc(&pdev->dev, sizeof(*hw), GFP_KERNEL);
+	if (!hw)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, hw);
+
+	hw->soc = device_get_match_data(dev);
+	if (!hw->soc)
+		return -ENOENT;
+
+	hw->dev = &pdev->dev;
+
+	if (!hw->soc->nbase_names)
+		return dev_err_probe(dev, -EINVAL,
+			"SoC should be assigned at least one register base\n");
+
+	hw->base = devm_kmalloc_array(&pdev->dev, hw->soc->nbase_names,
+				      sizeof(*hw->base), GFP_KERNEL);
+	if (!hw->base)
+		return -ENOMEM;
+
+	for (i = 0; i < hw->soc->nbase_names; i++) {
+		hw->base[i] = devm_platform_ioremap_resource_byname(pdev,
+					hw->soc->base_names[i]);
+		if (IS_ERR(hw->base[i]))
+			return PTR_ERR(hw->base[i]);
+	}
+
+	hw->nbase = hw->soc->nbase_names;
+
+	if (of_find_property(hw->dev->of_node,
+			     "mediatek,rsel-resistance-in-si-unit", NULL))
+		hw->rsel_si_unit = true;
+	else
+		hw->rsel_si_unit = false;
+
+	spin_lock_init(&hw->lock);
+
+	err = mtk_pctrl_build_state(pdev);
+	if (err)
+		return dev_err_probe(dev, err, "build state failed\n");
+
+	/* Copy from internal struct mtk_pin_desc to register to the core */
+	pins = devm_kmalloc_array(&pdev->dev, hw->soc->npins, sizeof(*pins),
+				  GFP_KERNEL);
+	if (!pins)
+		return -ENOMEM;
+
+	for (i = 0; i < hw->soc->npins; i++) {
+		pins[i].number = hw->soc->pins[i].number;
+		pins[i].name = hw->soc->pins[i].name;
+	}
+
+	/* Setup pins descriptions per SoC types */
+	mtk_desc.pins = (const struct pinctrl_pin_desc *)pins;
+	mtk_desc.npins = hw->soc->npins;
+	mtk_desc.num_custom_params = ARRAY_SIZE(mtk_custom_bindings);
+	mtk_desc.custom_params = mtk_custom_bindings;
+#ifdef CONFIG_DEBUG_FS
+	mtk_desc.custom_conf_items = mtk_conf_items;
+#endif
+
+	err = devm_pinctrl_register_and_init(&pdev->dev, &mtk_desc, hw,
+					     &hw->pctrl);
+	if (err)
+		return err;
+
+	err = pinctrl_enable(hw->pctrl);
+	if (err)
+		return err;
+
+	err = mtk_build_eint(hw, pdev);
+	if (err)
+		dev_warn(&pdev->dev,
+			 "Failed to add EINT, but pinctrl still can work\n");
+
+	/* Build gpiochip should be after pinctrl_enable is done */
+	err = mtk_build_gpiochip(hw);
+	if (err)
+		return dev_err_probe(dev, err, "Failed to add gpio_chip\n");
+
+	platform_set_drvdata(pdev, hw);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mtk_paris_pinctrl_probe);
+
+static int mtk_paris_pinctrl_suspend(struct device *device)
+{
+	struct mtk_pinctrl *pctl = dev_get_drvdata(device);
+
+	return mtk_eint_do_suspend(pctl->eint);
+}
+
+static int mtk_paris_pinctrl_resume(struct device *device)
+{
+	struct mtk_pinctrl *pctl = dev_get_drvdata(device);
+
+	return mtk_eint_do_resume(pctl->eint);
+}
+
+const struct dev_pm_ops mtk_paris_pinctrl_pm_ops = {
+	.suspend_noirq = mtk_paris_pinctrl_suspend,
+	.resume_noirq = mtk_paris_pinctrl_resume,
+};
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("MediaTek Pinctrl Common Driver V2 Paris");