Adding upstream version 5.10.209.upstream/5.10.209upstream

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

1 files changed, 912 insertions, 0 deletions

diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
new file mode 100644
index 000000000..ade348b49
--- /dev/null
+++ b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
@@ -0,0 +1,912 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright (C) 2015-2017 Socionext Inc.
+//   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+
+#include <linux/list.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include "../core.h"
+#include "../pinctrl-utils.h"
+#include "pinctrl-uniphier.h"
+
+#define UNIPHIER_PINCTRL_PINMUX_BASE	0x1000
+#define UNIPHIER_PINCTRL_LOAD_PINMUX	0x1700
+#define UNIPHIER_PINCTRL_DRVCTRL_BASE	0x1800
+#define UNIPHIER_PINCTRL_DRV2CTRL_BASE	0x1900
+#define UNIPHIER_PINCTRL_DRV3CTRL_BASE	0x1980
+#define UNIPHIER_PINCTRL_PUPDCTRL_BASE	0x1a00
+#define UNIPHIER_PINCTRL_IECTRL_BASE	0x1d00
+
+struct uniphier_pinctrl_reg_region {
+	struct list_head node;
+	unsigned int base;
+	unsigned int nregs;
+	u32 vals[];
+};
+
+struct uniphier_pinctrl_priv {
+	struct pinctrl_desc pctldesc;
+	struct pinctrl_dev *pctldev;
+	struct regmap *regmap;
+	const struct uniphier_pinctrl_socdata *socdata;
+	struct list_head reg_regions;
+};
+
+static int uniphier_pctl_get_groups_count(struct pinctrl_dev *pctldev)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+
+	return priv->socdata->groups_count;
+}
+
+static const char *uniphier_pctl_get_group_name(struct pinctrl_dev *pctldev,
+						unsigned selector)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+
+	return priv->socdata->groups[selector].name;
+}
+
+static int uniphier_pctl_get_group_pins(struct pinctrl_dev *pctldev,
+					unsigned selector,
+					const unsigned **pins,
+					unsigned *num_pins)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+
+	*pins = priv->socdata->groups[selector].pins;
+	*num_pins = priv->socdata->groups[selector].num_pins;
+
+	return 0;
+}
+
+#ifdef CONFIG_DEBUG_FS
+static void uniphier_pctl_pin_dbg_show(struct pinctrl_dev *pctldev,
+				       struct seq_file *s, unsigned offset)
+{
+	const struct pin_desc *desc = pin_desc_get(pctldev, offset);
+	const char *pull_dir, *drv_type;
+
+	switch (uniphier_pin_get_pull_dir(desc->drv_data)) {
+	case UNIPHIER_PIN_PULL_UP:
+		pull_dir = "UP";
+		break;
+	case UNIPHIER_PIN_PULL_DOWN:
+		pull_dir = "DOWN";
+		break;
+	case UNIPHIER_PIN_PULL_UP_FIXED:
+		pull_dir = "UP(FIXED)";
+		break;
+	case UNIPHIER_PIN_PULL_DOWN_FIXED:
+		pull_dir = "DOWN(FIXED)";
+		break;
+	case UNIPHIER_PIN_PULL_NONE:
+		pull_dir = "NONE";
+		break;
+	default:
+		BUG();
+	}
+
+	switch (uniphier_pin_get_drv_type(desc->drv_data)) {
+	case UNIPHIER_PIN_DRV_1BIT:
+		drv_type = "4/8(mA)";
+		break;
+	case UNIPHIER_PIN_DRV_2BIT:
+		drv_type = "8/12/16/20(mA)";
+		break;
+	case UNIPHIER_PIN_DRV_3BIT:
+		drv_type = "4/5/7/9/11/12/14/16(mA)";
+		break;
+	case UNIPHIER_PIN_DRV_FIXED4:
+		drv_type = "4(mA)";
+		break;
+	case UNIPHIER_PIN_DRV_FIXED5:
+		drv_type = "5(mA)";
+		break;
+	case UNIPHIER_PIN_DRV_FIXED8:
+		drv_type = "8(mA)";
+		break;
+	case UNIPHIER_PIN_DRV_NONE:
+		drv_type = "NONE";
+		break;
+	default:
+		BUG();
+	}
+
+	seq_printf(s, " PULL_DIR=%s  DRV_TYPE=%s", pull_dir, drv_type);
+}
+#endif
+
+static const struct pinctrl_ops uniphier_pctlops = {
+	.get_groups_count = uniphier_pctl_get_groups_count,
+	.get_group_name = uniphier_pctl_get_group_name,
+	.get_group_pins = uniphier_pctl_get_group_pins,
+#ifdef CONFIG_DEBUG_FS
+	.pin_dbg_show = uniphier_pctl_pin_dbg_show,
+#endif
+	.dt_node_to_map = pinconf_generic_dt_node_to_map_all,
+	.dt_free_map = pinctrl_utils_free_map,
+};
+
+static const unsigned int uniphier_conf_drv_strengths_1bit[] = {4, 8};
+static const unsigned int uniphier_conf_drv_strengths_2bit[] = {8, 12, 16, 20};
+static const unsigned int uniphier_conf_drv_strengths_3bit[] = {4, 5, 7, 9, 11,
+								12, 14, 16};
+static const unsigned int uniphier_conf_drv_strengths_fixed4[] = {4};
+static const unsigned int uniphier_conf_drv_strengths_fixed5[] = {5};
+static const unsigned int uniphier_conf_drv_strengths_fixed8[] = {8};
+
+static int uniphier_conf_get_drvctrl_data(struct pinctrl_dev *pctldev,
+					  unsigned int pin, unsigned int *reg,
+					  unsigned int *shift,
+					  unsigned int *mask,
+					  const unsigned int **strengths)
+{
+	const struct pin_desc *desc = pin_desc_get(pctldev, pin);
+	enum uniphier_pin_drv_type type =
+				uniphier_pin_get_drv_type(desc->drv_data);
+	unsigned int base = 0;
+	unsigned int stride = 0;
+	unsigned int width = 0;
+	unsigned int drvctrl;
+
+	switch (type) {
+	case UNIPHIER_PIN_DRV_1BIT:
+		*strengths = uniphier_conf_drv_strengths_1bit;
+		base = UNIPHIER_PINCTRL_DRVCTRL_BASE;
+		stride = 1;
+		width = 1;
+		break;
+	case UNIPHIER_PIN_DRV_2BIT:
+		*strengths = uniphier_conf_drv_strengths_2bit;
+		base = UNIPHIER_PINCTRL_DRV2CTRL_BASE;
+		stride = 2;
+		width = 2;
+		break;
+	case UNIPHIER_PIN_DRV_3BIT:
+		*strengths = uniphier_conf_drv_strengths_3bit;
+		base = UNIPHIER_PINCTRL_DRV3CTRL_BASE;
+		stride = 4;
+		width = 3;
+		break;
+	case UNIPHIER_PIN_DRV_FIXED4:
+		*strengths = uniphier_conf_drv_strengths_fixed4;
+		break;
+	case UNIPHIER_PIN_DRV_FIXED5:
+		*strengths = uniphier_conf_drv_strengths_fixed5;
+		break;
+	case UNIPHIER_PIN_DRV_FIXED8:
+		*strengths = uniphier_conf_drv_strengths_fixed8;
+		break;
+	default:
+		/* drive strength control is not supported for this pin */
+		return -EINVAL;
+	}
+
+	drvctrl = uniphier_pin_get_drvctrl(desc->drv_data);
+	drvctrl *= stride;
+
+	*reg = base + drvctrl / 32 * 4;
+	*shift = drvctrl % 32;
+	*mask = (1U << width) - 1;
+
+	return 0;
+}
+
+static int uniphier_conf_pin_bias_get(struct pinctrl_dev *pctldev,
+				      unsigned int pin,
+				      enum pin_config_param param)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	const struct pin_desc *desc = pin_desc_get(pctldev, pin);
+	enum uniphier_pin_pull_dir pull_dir =
+				uniphier_pin_get_pull_dir(desc->drv_data);
+	unsigned int pupdctrl, reg, shift, val;
+	unsigned int expected = 1;
+	int ret;
+
+	switch (param) {
+	case PIN_CONFIG_BIAS_DISABLE:
+		if (pull_dir == UNIPHIER_PIN_PULL_NONE)
+			return 0;
+		if (pull_dir == UNIPHIER_PIN_PULL_UP_FIXED ||
+		    pull_dir == UNIPHIER_PIN_PULL_DOWN_FIXED)
+			return -EINVAL;
+		expected = 0;
+		break;
+	case PIN_CONFIG_BIAS_PULL_UP:
+		if (pull_dir == UNIPHIER_PIN_PULL_UP_FIXED)
+			return 0;
+		if (pull_dir != UNIPHIER_PIN_PULL_UP)
+			return -EINVAL;
+		break;
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		if (pull_dir == UNIPHIER_PIN_PULL_DOWN_FIXED)
+			return 0;
+		if (pull_dir != UNIPHIER_PIN_PULL_DOWN)
+			return -EINVAL;
+		break;
+	default:
+		BUG();
+	}
+
+	pupdctrl = uniphier_pin_get_pupdctrl(desc->drv_data);
+
+	reg = UNIPHIER_PINCTRL_PUPDCTRL_BASE + pupdctrl / 32 * 4;
+	shift = pupdctrl % 32;
+
+	ret = regmap_read(priv->regmap, reg, &val);
+	if (ret)
+		return ret;
+
+	val = (val >> shift) & 1;
+
+	return (val == expected) ? 0 : -EINVAL;
+}
+
+static int uniphier_conf_pin_drive_get(struct pinctrl_dev *pctldev,
+				       unsigned int pin, u32 *strength)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	unsigned int reg, shift, mask, val;
+	const unsigned int *strengths;
+	int ret;
+
+	ret = uniphier_conf_get_drvctrl_data(pctldev, pin, &reg, &shift,
+					     &mask, &strengths);
+	if (ret)
+		return ret;
+
+	if (mask) {
+		ret = regmap_read(priv->regmap, reg, &val);
+		if (ret)
+			return ret;
+	} else {
+		val = 0;
+	}
+
+	*strength = strengths[(val >> shift) & mask];
+
+	return 0;
+}
+
+static int uniphier_conf_pin_input_enable_get(struct pinctrl_dev *pctldev,
+					      unsigned int pin)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	const struct pin_desc *desc = pin_desc_get(pctldev, pin);
+	unsigned int iectrl = uniphier_pin_get_iectrl(desc->drv_data);
+	unsigned int reg, mask, val;
+	int ret;
+
+	if (iectrl == UNIPHIER_PIN_IECTRL_NONE)
+		/* This pin is always input-enabled. */
+		return 0;
+
+	if (priv->socdata->caps & UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL)
+		iectrl = pin;
+
+	reg = UNIPHIER_PINCTRL_IECTRL_BASE + iectrl / 32 * 4;
+	mask = BIT(iectrl % 32);
+
+	ret = regmap_read(priv->regmap, reg, &val);
+	if (ret)
+		return ret;
+
+	return val & mask ? 0 : -EINVAL;
+}
+
+static int uniphier_conf_pin_config_get(struct pinctrl_dev *pctldev,
+					unsigned pin,
+					unsigned long *configs)
+{
+	enum pin_config_param param = pinconf_to_config_param(*configs);
+	bool has_arg = false;
+	u32 arg;
+	int ret;
+
+	switch (param) {
+	case PIN_CONFIG_BIAS_DISABLE:
+	case PIN_CONFIG_BIAS_PULL_UP:
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		ret = uniphier_conf_pin_bias_get(pctldev, pin, param);
+		break;
+	case PIN_CONFIG_DRIVE_STRENGTH:
+		ret = uniphier_conf_pin_drive_get(pctldev, pin, &arg);
+		has_arg = true;
+		break;
+	case PIN_CONFIG_INPUT_ENABLE:
+		ret = uniphier_conf_pin_input_enable_get(pctldev, pin);
+		break;
+	default:
+		/* unsupported parameter */
+		ret = -EINVAL;
+		break;
+	}
+
+	if (ret == 0 && has_arg)
+		*configs = pinconf_to_config_packed(param, arg);
+
+	return ret;
+}
+
+static int uniphier_conf_pin_bias_set(struct pinctrl_dev *pctldev,
+				      unsigned int pin,
+				      enum pin_config_param param, u32 arg)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	const struct pin_desc *desc = pin_desc_get(pctldev, pin);
+	enum uniphier_pin_pull_dir pull_dir =
+				uniphier_pin_get_pull_dir(desc->drv_data);
+	unsigned int pupdctrl, reg, shift;
+	unsigned int val = 1;
+
+	switch (param) {
+	case PIN_CONFIG_BIAS_DISABLE:
+		if (pull_dir == UNIPHIER_PIN_PULL_NONE)
+			return 0;
+		if (pull_dir == UNIPHIER_PIN_PULL_UP_FIXED ||
+		    pull_dir == UNIPHIER_PIN_PULL_DOWN_FIXED) {
+			dev_err(pctldev->dev,
+				"can not disable pull register for pin %s\n",
+				desc->name);
+			return -EINVAL;
+		}
+		val = 0;
+		break;
+	case PIN_CONFIG_BIAS_PULL_UP:
+		if (pull_dir == UNIPHIER_PIN_PULL_UP_FIXED && arg != 0)
+			return 0;
+		if (pull_dir != UNIPHIER_PIN_PULL_UP) {
+			dev_err(pctldev->dev,
+				"pull-up is unsupported for pin %s\n",
+				desc->name);
+			return -EINVAL;
+		}
+		if (arg == 0) {
+			dev_err(pctldev->dev, "pull-up can not be total\n");
+			return -EINVAL;
+		}
+		break;
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		if (pull_dir == UNIPHIER_PIN_PULL_DOWN_FIXED && arg != 0)
+			return 0;
+		if (pull_dir != UNIPHIER_PIN_PULL_DOWN) {
+			dev_err(pctldev->dev,
+				"pull-down is unsupported for pin %s\n",
+				desc->name);
+			return -EINVAL;
+		}
+		if (arg == 0) {
+			dev_err(pctldev->dev, "pull-down can not be total\n");
+			return -EINVAL;
+		}
+		break;
+	case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
+		if (pull_dir == UNIPHIER_PIN_PULL_NONE) {
+			dev_err(pctldev->dev,
+				"pull-up/down is unsupported for pin %s\n",
+				desc->name);
+			return -EINVAL;
+		}
+
+		if (arg == 0)
+			return 0; /* configuration ingored */
+		break;
+	default:
+		BUG();
+	}
+
+	pupdctrl = uniphier_pin_get_pupdctrl(desc->drv_data);
+
+	reg = UNIPHIER_PINCTRL_PUPDCTRL_BASE + pupdctrl / 32 * 4;
+	shift = pupdctrl % 32;
+
+	return regmap_update_bits(priv->regmap, reg, 1 << shift, val << shift);
+}
+
+static int uniphier_conf_pin_drive_set(struct pinctrl_dev *pctldev,
+				       unsigned int pin, u32 strength)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	const struct pin_desc *desc = pin_desc_get(pctldev, pin);
+	unsigned int reg, shift, mask, val;
+	const unsigned int *strengths;
+	int ret;
+
+	ret = uniphier_conf_get_drvctrl_data(pctldev, pin, &reg, &shift,
+					     &mask, &strengths);
+	if (ret) {
+		dev_err(pctldev->dev, "cannot set drive strength for pin %s\n",
+			desc->name);
+		return ret;
+	}
+
+	for (val = 0; val <= mask; val++) {
+		if (strengths[val] > strength)
+			break;
+	}
+
+	if (val == 0) {
+		dev_err(pctldev->dev,
+			"unsupported drive strength %u mA for pin %s\n",
+			strength, desc->name);
+		return -EINVAL;
+	}
+
+	if (!mask)
+		return 0;
+
+	val--;
+
+	return regmap_update_bits(priv->regmap, reg,
+				  mask << shift, val << shift);
+}
+
+static int uniphier_conf_pin_input_enable(struct pinctrl_dev *pctldev,
+					  unsigned int pin, u32 enable)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	const struct pin_desc *desc = pin_desc_get(pctldev, pin);
+	unsigned int iectrl = uniphier_pin_get_iectrl(desc->drv_data);
+	unsigned int reg, mask;
+
+	/*
+	 * Multiple pins share one input enable, per-pin disabling is
+	 * impossible.
+	 */
+	if (!(priv->socdata->caps & UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL) &&
+	    !enable)
+		return -EINVAL;
+
+	/* UNIPHIER_PIN_IECTRL_NONE means the pin is always input-enabled */
+	if (iectrl == UNIPHIER_PIN_IECTRL_NONE)
+		return enable ? 0 : -EINVAL;
+
+	if (priv->socdata->caps & UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL)
+		iectrl = pin;
+
+	reg = UNIPHIER_PINCTRL_IECTRL_BASE + iectrl / 32 * 4;
+	mask = BIT(iectrl % 32);
+
+	return regmap_update_bits(priv->regmap, reg, mask, enable ? mask : 0);
+}
+
+static int uniphier_conf_pin_config_set(struct pinctrl_dev *pctldev,
+					unsigned pin,
+					unsigned long *configs,
+					unsigned num_configs)
+{
+	int i, ret;
+
+	for (i = 0; i < num_configs; i++) {
+		enum pin_config_param param =
+					pinconf_to_config_param(configs[i]);
+		u32 arg = pinconf_to_config_argument(configs[i]);
+
+		switch (param) {
+		case PIN_CONFIG_BIAS_DISABLE:
+		case PIN_CONFIG_BIAS_PULL_UP:
+		case PIN_CONFIG_BIAS_PULL_DOWN:
+		case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT:
+			ret = uniphier_conf_pin_bias_set(pctldev, pin,
+							 param, arg);
+			break;
+		case PIN_CONFIG_DRIVE_STRENGTH:
+			ret = uniphier_conf_pin_drive_set(pctldev, pin, arg);
+			break;
+		case PIN_CONFIG_INPUT_ENABLE:
+			ret = uniphier_conf_pin_input_enable(pctldev, pin, arg);
+			break;
+		default:
+			dev_err(pctldev->dev,
+				"unsupported configuration parameter %u\n",
+				param);
+			return -EINVAL;
+		}
+
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int uniphier_conf_pin_config_group_set(struct pinctrl_dev *pctldev,
+					      unsigned selector,
+					      unsigned long *configs,
+					      unsigned num_configs)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	const unsigned *pins = priv->socdata->groups[selector].pins;
+	unsigned num_pins = priv->socdata->groups[selector].num_pins;
+	int i, ret;
+
+	for (i = 0; i < num_pins; i++) {
+		ret = uniphier_conf_pin_config_set(pctldev, pins[i],
+						   configs, num_configs);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static const struct pinconf_ops uniphier_confops = {
+	.is_generic = true,
+	.pin_config_get = uniphier_conf_pin_config_get,
+	.pin_config_set = uniphier_conf_pin_config_set,
+	.pin_config_group_set = uniphier_conf_pin_config_group_set,
+};
+
+static int uniphier_pmx_get_functions_count(struct pinctrl_dev *pctldev)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+
+	return priv->socdata->functions_count;
+}
+
+static const char *uniphier_pmx_get_function_name(struct pinctrl_dev *pctldev,
+						  unsigned selector)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+
+	return priv->socdata->functions[selector].name;
+}
+
+static int uniphier_pmx_get_function_groups(struct pinctrl_dev *pctldev,
+					    unsigned selector,
+					    const char * const **groups,
+					    unsigned *num_groups)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+
+	*groups = priv->socdata->functions[selector].groups;
+	*num_groups = priv->socdata->functions[selector].num_groups;
+
+	return 0;
+}
+
+static int uniphier_pmx_set_one_mux(struct pinctrl_dev *pctldev, unsigned pin,
+				    int muxval)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	unsigned int mux_bits, reg_stride, reg, reg_end, shift, mask;
+	bool load_pinctrl;
+	int ret;
+
+	/* some pins need input-enabling */
+	ret = uniphier_conf_pin_input_enable(pctldev, pin, 1);
+	if (ret)
+		return ret;
+
+	if (muxval < 0)
+		return 0;	/* dedicated pin; nothing to do for pin-mux */
+
+	if (priv->socdata->caps & UNIPHIER_PINCTRL_CAPS_DBGMUX_SEPARATE) {
+		/*
+		 *  Mode     reg_offset     bit_position
+		 *  Normal    4 * n        shift+3:shift
+		 *  Debug     4 * n        shift+7:shift+4
+		 */
+		mux_bits = 4;
+		reg_stride = 8;
+		load_pinctrl = true;
+	} else {
+		/*
+		 *  Mode     reg_offset     bit_position
+		 *  Normal    8 * n        shift+3:shift
+		 *  Debug     8 * n + 4    shift+3:shift
+		 */
+		mux_bits = 8;
+		reg_stride = 4;
+		load_pinctrl = false;
+	}
+
+	reg = UNIPHIER_PINCTRL_PINMUX_BASE + pin * mux_bits / 32 * reg_stride;
+	reg_end = reg + reg_stride;
+	shift = pin * mux_bits % 32;
+	mask = (1U << mux_bits) - 1;
+
+	/*
+	 * If reg_stride is greater than 4, the MSB of each pinsel shall be
+	 * stored in the offset+4.
+	 */
+	for (; reg < reg_end; reg += 4) {
+		ret = regmap_update_bits(priv->regmap, reg,
+					 mask << shift, muxval << shift);
+		if (ret)
+			return ret;
+		muxval >>= mux_bits;
+	}
+
+	if (load_pinctrl) {
+		ret = regmap_write(priv->regmap,
+				   UNIPHIER_PINCTRL_LOAD_PINMUX, 1);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int uniphier_pmx_set_mux(struct pinctrl_dev *pctldev,
+				unsigned func_selector,
+				unsigned group_selector)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	const struct uniphier_pinctrl_group *grp =
+					&priv->socdata->groups[group_selector];
+	int i;
+	int ret;
+
+	for (i = 0; i < grp->num_pins; i++) {
+		ret = uniphier_pmx_set_one_mux(pctldev, grp->pins[i],
+					       grp->muxvals[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int uniphier_pmx_gpio_request_enable(struct pinctrl_dev *pctldev,
+					    struct pinctrl_gpio_range *range,
+					    unsigned offset)
+{
+	struct uniphier_pinctrl_priv *priv = pinctrl_dev_get_drvdata(pctldev);
+	unsigned int gpio_offset;
+	int muxval, i;
+
+	if (range->pins) {
+		for (i = 0; i < range->npins; i++)
+			if (range->pins[i] == offset)
+				break;
+
+		if (WARN_ON(i == range->npins))
+			return -EINVAL;
+
+		gpio_offset = i;
+	} else {
+		gpio_offset = offset - range->pin_base;
+	}
+
+	gpio_offset += range->id;
+
+	muxval = priv->socdata->get_gpio_muxval(offset, gpio_offset);
+
+	return uniphier_pmx_set_one_mux(pctldev, offset, muxval);
+}
+
+static const struct pinmux_ops uniphier_pmxops = {
+	.get_functions_count = uniphier_pmx_get_functions_count,
+	.get_function_name = uniphier_pmx_get_function_name,
+	.get_function_groups = uniphier_pmx_get_function_groups,
+	.set_mux = uniphier_pmx_set_mux,
+	.gpio_request_enable = uniphier_pmx_gpio_request_enable,
+	.strict = true,
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int uniphier_pinctrl_suspend(struct device *dev)
+{
+	struct uniphier_pinctrl_priv *priv = dev_get_drvdata(dev);
+	struct uniphier_pinctrl_reg_region *r;
+	int ret;
+
+	list_for_each_entry(r, &priv->reg_regions, node) {
+		ret = regmap_bulk_read(priv->regmap, r->base, r->vals,
+				       r->nregs);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int uniphier_pinctrl_resume(struct device *dev)
+{
+	struct uniphier_pinctrl_priv *priv = dev_get_drvdata(dev);
+	struct uniphier_pinctrl_reg_region *r;
+	int ret;
+
+	list_for_each_entry(r, &priv->reg_regions, node) {
+		ret = regmap_bulk_write(priv->regmap, r->base, r->vals,
+					r->nregs);
+		if (ret)
+			return ret;
+	}
+
+	if (priv->socdata->caps & UNIPHIER_PINCTRL_CAPS_DBGMUX_SEPARATE) {
+		ret = regmap_write(priv->regmap,
+				   UNIPHIER_PINCTRL_LOAD_PINMUX, 1);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int uniphier_pinctrl_add_reg_region(struct device *dev,
+					   struct uniphier_pinctrl_priv *priv,
+					   unsigned int base,
+					   unsigned int count,
+					   unsigned int width)
+{
+	struct uniphier_pinctrl_reg_region *region;
+	unsigned int nregs;
+
+	if (!count)
+		return 0;
+
+	nregs = DIV_ROUND_UP(count * width, 32);
+
+	region = devm_kzalloc(dev, struct_size(region, vals, nregs),
+			      GFP_KERNEL);
+	if (!region)
+		return -ENOMEM;
+
+	region->base = base;
+	region->nregs = nregs;
+
+	list_add_tail(&region->node, &priv->reg_regions);
+
+	return 0;
+}
+#endif
+
+static int uniphier_pinctrl_pm_init(struct device *dev,
+				    struct uniphier_pinctrl_priv *priv)
+{
+#ifdef CONFIG_PM_SLEEP
+	const struct uniphier_pinctrl_socdata *socdata = priv->socdata;
+	unsigned int num_drvctrl = 0;
+	unsigned int num_drv2ctrl = 0;
+	unsigned int num_drv3ctrl = 0;
+	unsigned int num_pupdctrl = 0;
+	unsigned int num_iectrl = 0;
+	unsigned int iectrl, drvctrl, pupdctrl;
+	enum uniphier_pin_drv_type drv_type;
+	enum uniphier_pin_pull_dir pull_dir;
+	int i, ret;
+
+	for (i = 0; i < socdata->npins; i++) {
+		void *drv_data = socdata->pins[i].drv_data;
+
+		drvctrl = uniphier_pin_get_drvctrl(drv_data);
+		drv_type = uniphier_pin_get_drv_type(drv_data);
+		pupdctrl = uniphier_pin_get_pupdctrl(drv_data);
+		pull_dir = uniphier_pin_get_pull_dir(drv_data);
+		iectrl = uniphier_pin_get_iectrl(drv_data);
+
+		switch (drv_type) {
+		case UNIPHIER_PIN_DRV_1BIT:
+			num_drvctrl = max(num_drvctrl, drvctrl + 1);
+			break;
+		case UNIPHIER_PIN_DRV_2BIT:
+			num_drv2ctrl = max(num_drv2ctrl, drvctrl + 1);
+			break;
+		case UNIPHIER_PIN_DRV_3BIT:
+			num_drv3ctrl = max(num_drv3ctrl, drvctrl + 1);
+			break;
+		default:
+			break;
+		}
+
+		if (pull_dir == UNIPHIER_PIN_PULL_UP ||
+		    pull_dir == UNIPHIER_PIN_PULL_DOWN)
+			num_pupdctrl = max(num_pupdctrl, pupdctrl + 1);
+
+		if (iectrl != UNIPHIER_PIN_IECTRL_NONE) {
+			if (socdata->caps & UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL)
+				iectrl = i;
+			num_iectrl = max(num_iectrl, iectrl + 1);
+		}
+	}
+
+	INIT_LIST_HEAD(&priv->reg_regions);
+
+	ret = uniphier_pinctrl_add_reg_region(dev, priv,
+					      UNIPHIER_PINCTRL_PINMUX_BASE,
+					      socdata->npins, 8);
+	if (ret)
+		return ret;
+
+	ret = uniphier_pinctrl_add_reg_region(dev, priv,
+					      UNIPHIER_PINCTRL_DRVCTRL_BASE,
+					      num_drvctrl, 1);
+	if (ret)
+		return ret;
+
+	ret = uniphier_pinctrl_add_reg_region(dev, priv,
+					      UNIPHIER_PINCTRL_DRV2CTRL_BASE,
+					      num_drv2ctrl, 2);
+	if (ret)
+		return ret;
+
+	ret = uniphier_pinctrl_add_reg_region(dev, priv,
+					      UNIPHIER_PINCTRL_DRV3CTRL_BASE,
+					      num_drv3ctrl, 3);
+	if (ret)
+		return ret;
+
+	ret = uniphier_pinctrl_add_reg_region(dev, priv,
+					      UNIPHIER_PINCTRL_PUPDCTRL_BASE,
+					      num_pupdctrl, 1);
+	if (ret)
+		return ret;
+
+	ret = uniphier_pinctrl_add_reg_region(dev, priv,
+					      UNIPHIER_PINCTRL_IECTRL_BASE,
+					      num_iectrl, 1);
+	if (ret)
+		return ret;
+#endif
+	return 0;
+}
+
+const struct dev_pm_ops uniphier_pinctrl_pm_ops = {
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(uniphier_pinctrl_suspend,
+				     uniphier_pinctrl_resume)
+};
+
+int uniphier_pinctrl_probe(struct platform_device *pdev,
+			   const struct uniphier_pinctrl_socdata *socdata)
+{
+	struct device *dev = &pdev->dev;
+	struct uniphier_pinctrl_priv *priv;
+	struct device_node *parent;
+	int ret;
+
+	if (!socdata ||
+	    !socdata->pins || !socdata->npins ||
+	    !socdata->groups || !socdata->groups_count ||
+	    !socdata->functions || !socdata->functions_count) {
+		dev_err(dev, "pinctrl socdata lacks necessary members\n");
+		return -EINVAL;
+	}
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	parent = of_get_parent(dev->of_node);
+	priv->regmap = syscon_node_to_regmap(parent);
+	of_node_put(parent);
+
+	if (IS_ERR(priv->regmap)) {
+		dev_err(dev, "failed to get regmap\n");
+		return PTR_ERR(priv->regmap);
+	}
+
+	priv->socdata = socdata;
+	priv->pctldesc.name = dev->driver->name;
+	priv->pctldesc.pins = socdata->pins;
+	priv->pctldesc.npins = socdata->npins;
+	priv->pctldesc.pctlops = &uniphier_pctlops;
+	priv->pctldesc.pmxops = &uniphier_pmxops;
+	priv->pctldesc.confops = &uniphier_confops;
+	priv->pctldesc.owner = dev->driver->owner;
+
+	ret = uniphier_pinctrl_pm_init(dev, priv);
+	if (ret)
+		return ret;
+
+	priv->pctldev = devm_pinctrl_register(dev, &priv->pctldesc, priv);
+	if (IS_ERR(priv->pctldev)) {
+		dev_err(dev, "failed to register UniPhier pinctrl driver\n");
+		return PTR_ERR(priv->pctldev);
+	}
+
+	platform_set_drvdata(pdev, priv);
+
+	return 0;
+}