1 files changed, 882 insertions, 0 deletions

diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c b/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
new file mode 100644
index 0000000..2d1b69f
--- /dev/null
+++ b/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
@@ -0,0 +1,882 @@
+/*
+ * Copyright (c) 2015, Sony Mobile Communications AB.
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinmux.h>
+#include <linux/pinctrl/pinconf.h>
+#include <linux/pinctrl/pinconf-generic.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/of_device.h>
+
+#include <dt-bindings/pinctrl/qcom,pmic-mpp.h>
+
+#include "../core.h"
+#include "../pinctrl-utils.h"
+
+/* MPP registers */
+#define SSBI_REG_ADDR_MPP_BASE		0x50
+#define SSBI_REG_ADDR_MPP(n)		(SSBI_REG_ADDR_MPP_BASE + n)
+
+/* MPP Type: type */
+#define PM8XXX_MPP_TYPE_D_INPUT         0
+#define PM8XXX_MPP_TYPE_D_OUTPUT        1
+#define PM8XXX_MPP_TYPE_D_BI_DIR        2
+#define PM8XXX_MPP_TYPE_A_INPUT         3
+#define PM8XXX_MPP_TYPE_A_OUTPUT        4
+#define PM8XXX_MPP_TYPE_SINK            5
+#define PM8XXX_MPP_TYPE_DTEST_SINK      6
+#define PM8XXX_MPP_TYPE_DTEST_OUTPUT    7
+
+/* Digital Input: control */
+#define PM8XXX_MPP_DIN_TO_INT           0
+#define PM8XXX_MPP_DIN_TO_DBUS1         1
+#define PM8XXX_MPP_DIN_TO_DBUS2         2
+#define PM8XXX_MPP_DIN_TO_DBUS3         3
+
+/* Digital Output: control */
+#define PM8XXX_MPP_DOUT_CTRL_LOW        0
+#define PM8XXX_MPP_DOUT_CTRL_HIGH       1
+#define PM8XXX_MPP_DOUT_CTRL_MPP        2
+#define PM8XXX_MPP_DOUT_CTRL_INV_MPP    3
+
+/* Bidirectional: control */
+#define PM8XXX_MPP_BI_PULLUP_1KOHM      0
+#define PM8XXX_MPP_BI_PULLUP_OPEN       1
+#define PM8XXX_MPP_BI_PULLUP_10KOHM     2
+#define PM8XXX_MPP_BI_PULLUP_30KOHM     3
+
+/* Analog Output: control */
+#define PM8XXX_MPP_AOUT_CTRL_DISABLE            0
+#define PM8XXX_MPP_AOUT_CTRL_ENABLE             1
+#define PM8XXX_MPP_AOUT_CTRL_MPP_HIGH_EN        2
+#define PM8XXX_MPP_AOUT_CTRL_MPP_LOW_EN         3
+
+/* Current Sink: control */
+#define PM8XXX_MPP_CS_CTRL_DISABLE      0
+#define PM8XXX_MPP_CS_CTRL_ENABLE       1
+#define PM8XXX_MPP_CS_CTRL_MPP_HIGH_EN  2
+#define PM8XXX_MPP_CS_CTRL_MPP_LOW_EN   3
+
+/* DTEST Current Sink: control */
+#define PM8XXX_MPP_DTEST_CS_CTRL_EN1    0
+#define PM8XXX_MPP_DTEST_CS_CTRL_EN2    1
+#define PM8XXX_MPP_DTEST_CS_CTRL_EN3    2
+#define PM8XXX_MPP_DTEST_CS_CTRL_EN4    3
+
+/* DTEST Digital Output: control */
+#define PM8XXX_MPP_DTEST_DBUS1          0
+#define PM8XXX_MPP_DTEST_DBUS2          1
+#define PM8XXX_MPP_DTEST_DBUS3          2
+#define PM8XXX_MPP_DTEST_DBUS4          3
+
+/* custom pinconf parameters */
+#define PM8XXX_CONFIG_AMUX		(PIN_CONFIG_END + 1)
+#define PM8XXX_CONFIG_DTEST_SELECTOR	(PIN_CONFIG_END + 2)
+#define PM8XXX_CONFIG_ALEVEL		(PIN_CONFIG_END + 3)
+#define PM8XXX_CONFIG_PAIRED		(PIN_CONFIG_END + 4)
+
+/**
+ * struct pm8xxx_pin_data - dynamic configuration for a pin
+ * @reg:		address of the control register
+ * @irq:		IRQ from the PMIC interrupt controller
+ * @mode:		operating mode for the pin (digital, analog or current sink)
+ * @input:		pin is input
+ * @output:		pin is output
+ * @high_z:		pin is floating
+ * @paired:		mpp operates in paired mode
+ * @output_value:	logical output value of the mpp
+ * @power_source:	selected power source
+ * @dtest:		DTEST route selector
+ * @amux:		input muxing in analog mode
+ * @aout_level:		selector of the output in analog mode
+ * @drive_strength:	drive strength of the current sink
+ * @pullup:		pull up value, when in digital bidirectional mode
+ */
+struct pm8xxx_pin_data {
+	unsigned reg;
+	int irq;
+
+	u8 mode;
+
+	bool input;
+	bool output;
+	bool high_z;
+	bool paired;
+	bool output_value;
+
+	u8 power_source;
+	u8 dtest;
+	u8 amux;
+	u8 aout_level;
+	u8 drive_strength;
+	unsigned pullup;
+};
+
+struct pm8xxx_mpp {
+	struct device *dev;
+	struct regmap *regmap;
+	struct pinctrl_dev *pctrl;
+	struct gpio_chip chip;
+
+	struct pinctrl_desc desc;
+	unsigned npins;
+};
+
+static const struct pinconf_generic_params pm8xxx_mpp_bindings[] = {
+	{"qcom,amux-route",	PM8XXX_CONFIG_AMUX,		0},
+	{"qcom,analog-level",	PM8XXX_CONFIG_ALEVEL,		0},
+	{"qcom,dtest",		PM8XXX_CONFIG_DTEST_SELECTOR,	0},
+	{"qcom,paired",		PM8XXX_CONFIG_PAIRED,		0},
+};
+
+#ifdef CONFIG_DEBUG_FS
+static const struct pin_config_item pm8xxx_conf_items[] = {
+	PCONFDUMP(PM8XXX_CONFIG_AMUX, "analog mux", NULL, true),
+	PCONFDUMP(PM8XXX_CONFIG_ALEVEL, "analog level", NULL, true),
+	PCONFDUMP(PM8XXX_CONFIG_DTEST_SELECTOR, "dtest", NULL, true),
+	PCONFDUMP(PM8XXX_CONFIG_PAIRED, "paired", NULL, false),
+};
+#endif
+
+#define PM8XXX_MAX_MPPS	12
+static const char * const pm8xxx_groups[PM8XXX_MAX_MPPS] = {
+	"mpp1", "mpp2", "mpp3", "mpp4", "mpp5", "mpp6", "mpp7", "mpp8",
+	"mpp9", "mpp10", "mpp11", "mpp12",
+};
+
+#define PM8XXX_MPP_DIGITAL	0
+#define PM8XXX_MPP_ANALOG	1
+#define PM8XXX_MPP_SINK		2
+
+static const char * const pm8xxx_mpp_functions[] = {
+	"digital", "analog", "sink",
+};
+
+static int pm8xxx_mpp_update(struct pm8xxx_mpp *pctrl,
+			     struct pm8xxx_pin_data *pin)
+{
+	unsigned level;
+	unsigned ctrl;
+	unsigned type;
+	int ret;
+	u8 val;
+
+	switch (pin->mode) {
+	case PM8XXX_MPP_DIGITAL:
+		if (pin->dtest) {
+			type = PM8XXX_MPP_TYPE_DTEST_OUTPUT;
+			ctrl = pin->dtest - 1;
+		} else if (pin->input && pin->output) {
+			type = PM8XXX_MPP_TYPE_D_BI_DIR;
+			if (pin->high_z)
+				ctrl = PM8XXX_MPP_BI_PULLUP_OPEN;
+			else if (pin->pullup == 600)
+				ctrl = PM8XXX_MPP_BI_PULLUP_1KOHM;
+			else if (pin->pullup == 10000)
+				ctrl = PM8XXX_MPP_BI_PULLUP_10KOHM;
+			else
+				ctrl = PM8XXX_MPP_BI_PULLUP_30KOHM;
+		} else if (pin->input) {
+			type = PM8XXX_MPP_TYPE_D_INPUT;
+			if (pin->dtest)
+				ctrl = pin->dtest;
+			else
+				ctrl = PM8XXX_MPP_DIN_TO_INT;
+		} else {
+			type = PM8XXX_MPP_TYPE_D_OUTPUT;
+			ctrl = !!pin->output_value;
+			if (pin->paired)
+				ctrl |= BIT(1);
+		}
+
+		level = pin->power_source;
+		break;
+	case PM8XXX_MPP_ANALOG:
+		if (pin->output) {
+			type = PM8XXX_MPP_TYPE_A_OUTPUT;
+			level = pin->aout_level;
+			ctrl = pin->output_value;
+			if (pin->paired)
+				ctrl |= BIT(1);
+		} else {
+			type = PM8XXX_MPP_TYPE_A_INPUT;
+			level = pin->amux;
+			ctrl = 0;
+		}
+		break;
+	case PM8XXX_MPP_SINK:
+		level = (pin->drive_strength / 5) - 1;
+		if (pin->dtest) {
+			type = PM8XXX_MPP_TYPE_DTEST_SINK;
+			ctrl = pin->dtest - 1;
+		} else {
+			type = PM8XXX_MPP_TYPE_SINK;
+			ctrl = pin->output_value;
+			if (pin->paired)
+				ctrl |= BIT(1);
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	val = type << 5 | level << 2 | ctrl;
+	ret = regmap_write(pctrl->regmap, pin->reg, val);
+	if (ret)
+		dev_err(pctrl->dev, "failed to write register\n");
+
+	return ret;
+}
+
+static int pm8xxx_get_groups_count(struct pinctrl_dev *pctldev)
+{
+	struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+	return pctrl->npins;
+}
+
+static const char *pm8xxx_get_group_name(struct pinctrl_dev *pctldev,
+					 unsigned group)
+{
+	return pm8xxx_groups[group];
+}
+
+
+static int pm8xxx_get_group_pins(struct pinctrl_dev *pctldev,
+				 unsigned group,
+				 const unsigned **pins,
+				 unsigned *num_pins)
+{
+	struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+	*pins = &pctrl->desc.pins[group].number;
+	*num_pins = 1;
+
+	return 0;
+}
+
+static const struct pinctrl_ops pm8xxx_pinctrl_ops = {
+	.get_groups_count	= pm8xxx_get_groups_count,
+	.get_group_name		= pm8xxx_get_group_name,
+	.get_group_pins         = pm8xxx_get_group_pins,
+	.dt_node_to_map		= pinconf_generic_dt_node_to_map_group,
+	.dt_free_map		= pinctrl_utils_dt_free_map,
+};
+
+static int pm8xxx_get_functions_count(struct pinctrl_dev *pctldev)
+{
+	return ARRAY_SIZE(pm8xxx_mpp_functions);
+}
+
+static const char *pm8xxx_get_function_name(struct pinctrl_dev *pctldev,
+					    unsigned function)
+{
+	return pm8xxx_mpp_functions[function];
+}
+
+static int pm8xxx_get_function_groups(struct pinctrl_dev *pctldev,
+				      unsigned function,
+				      const char * const **groups,
+				      unsigned * const num_groups)
+{
+	struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
+
+	*groups = pm8xxx_groups;
+	*num_groups = pctrl->npins;
+	return 0;
+}
+
+static int pm8xxx_pinmux_set_mux(struct pinctrl_dev *pctldev,
+				 unsigned function,
+				 unsigned group)
+{
+	struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
+	struct pm8xxx_pin_data *pin = pctrl->desc.pins[group].drv_data;
+
+	pin->mode = function;
+	pm8xxx_mpp_update(pctrl, pin);
+
+	return 0;
+}
+
+static const struct pinmux_ops pm8xxx_pinmux_ops = {
+	.get_functions_count	= pm8xxx_get_functions_count,
+	.get_function_name	= pm8xxx_get_function_name,
+	.get_function_groups	= pm8xxx_get_function_groups,
+	.set_mux		= pm8xxx_pinmux_set_mux,
+};
+
+static int pm8xxx_pin_config_get(struct pinctrl_dev *pctldev,
+				 unsigned int offset,
+				 unsigned long *config)
+{
+	struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
+	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+	unsigned param = pinconf_to_config_param(*config);
+	unsigned arg;
+
+	switch (param) {
+	case PIN_CONFIG_BIAS_PULL_UP:
+		arg = pin->pullup;
+		break;
+	case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+		arg = pin->high_z;
+		break;
+	case PIN_CONFIG_INPUT_ENABLE:
+		arg = pin->input;
+		break;
+	case PIN_CONFIG_OUTPUT:
+		arg = pin->output_value;
+		break;
+	case PIN_CONFIG_POWER_SOURCE:
+		arg = pin->power_source;
+		break;
+	case PIN_CONFIG_DRIVE_STRENGTH:
+		arg = pin->drive_strength;
+		break;
+	case PM8XXX_CONFIG_DTEST_SELECTOR:
+		arg = pin->dtest;
+		break;
+	case PM8XXX_CONFIG_AMUX:
+		arg = pin->amux;
+		break;
+	case PM8XXX_CONFIG_ALEVEL:
+		arg = pin->aout_level;
+		break;
+	case PM8XXX_CONFIG_PAIRED:
+		arg = pin->paired;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	*config = pinconf_to_config_packed(param, arg);
+
+	return 0;
+}
+
+static int pm8xxx_pin_config_set(struct pinctrl_dev *pctldev,
+				 unsigned int offset,
+				 unsigned long *configs,
+				 unsigned num_configs)
+{
+	struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
+	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+	unsigned param;
+	unsigned arg;
+	unsigned i;
+
+	for (i = 0; i < num_configs; i++) {
+		param = pinconf_to_config_param(configs[i]);
+		arg = pinconf_to_config_argument(configs[i]);
+
+		switch (param) {
+		case PIN_CONFIG_BIAS_PULL_UP:
+			pin->pullup = arg;
+			break;
+		case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+			pin->high_z = true;
+			break;
+		case PIN_CONFIG_INPUT_ENABLE:
+			pin->input = true;
+			break;
+		case PIN_CONFIG_OUTPUT:
+			pin->output = true;
+			pin->output_value = !!arg;
+			break;
+		case PIN_CONFIG_POWER_SOURCE:
+			pin->power_source = arg;
+			break;
+		case PIN_CONFIG_DRIVE_STRENGTH:
+			pin->drive_strength = arg;
+			break;
+		case PM8XXX_CONFIG_DTEST_SELECTOR:
+			pin->dtest = arg;
+			break;
+		case PM8XXX_CONFIG_AMUX:
+			pin->amux = arg;
+			break;
+		case PM8XXX_CONFIG_ALEVEL:
+			pin->aout_level = arg;
+			break;
+		case PM8XXX_CONFIG_PAIRED:
+			pin->paired = !!arg;
+			break;
+		default:
+			dev_err(pctrl->dev,
+				"unsupported config parameter: %x\n",
+				param);
+			return -EINVAL;
+		}
+	}
+
+	pm8xxx_mpp_update(pctrl, pin);
+
+	return 0;
+}
+
+static const struct pinconf_ops pm8xxx_pinconf_ops = {
+	.is_generic = true,
+	.pin_config_group_get = pm8xxx_pin_config_get,
+	.pin_config_group_set = pm8xxx_pin_config_set,
+};
+
+static struct pinctrl_desc pm8xxx_pinctrl_desc = {
+	.name = "pm8xxx_mpp",
+	.pctlops = &pm8xxx_pinctrl_ops,
+	.pmxops = &pm8xxx_pinmux_ops,
+	.confops = &pm8xxx_pinconf_ops,
+	.owner = THIS_MODULE,
+};
+
+static int pm8xxx_mpp_direction_input(struct gpio_chip *chip,
+				       unsigned offset)
+{
+	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+
+	switch (pin->mode) {
+	case PM8XXX_MPP_DIGITAL:
+		pin->input = true;
+		break;
+	case PM8XXX_MPP_ANALOG:
+		pin->input = true;
+		pin->output = true;
+		break;
+	case PM8XXX_MPP_SINK:
+		return -EINVAL;
+	}
+
+	pm8xxx_mpp_update(pctrl, pin);
+
+	return 0;
+}
+
+static int pm8xxx_mpp_direction_output(struct gpio_chip *chip,
+					unsigned offset,
+					int value)
+{
+	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+
+	switch (pin->mode) {
+	case PM8XXX_MPP_DIGITAL:
+		pin->output = true;
+		break;
+	case PM8XXX_MPP_ANALOG:
+		pin->input = false;
+		pin->output = true;
+		break;
+	case PM8XXX_MPP_SINK:
+		pin->input = false;
+		pin->output = true;
+		break;
+	}
+
+	pm8xxx_mpp_update(pctrl, pin);
+
+	return 0;
+}
+
+static int pm8xxx_mpp_get(struct gpio_chip *chip, unsigned offset)
+{
+	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+	bool state;
+	int ret;
+
+	if (!pin->input)
+		return pin->output_value;
+
+	ret = irq_get_irqchip_state(pin->irq, IRQCHIP_STATE_LINE_LEVEL, &state);
+	if (!ret)
+		ret = !!state;
+
+	return ret;
+}
+
+static void pm8xxx_mpp_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+
+	pin->output_value = !!value;
+
+	pm8xxx_mpp_update(pctrl, pin);
+}
+
+static int pm8xxx_mpp_of_xlate(struct gpio_chip *chip,
+				const struct of_phandle_args *gpio_desc,
+				u32 *flags)
+{
+	if (chip->of_gpio_n_cells < 2)
+		return -EINVAL;
+
+	if (flags)
+		*flags = gpio_desc->args[1];
+
+	return gpio_desc->args[0] - 1;
+}
+
+
+static int pm8xxx_mpp_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+
+	return pin->irq;
+}
+
+#ifdef CONFIG_DEBUG_FS
+#include <linux/seq_file.h>
+
+static void pm8xxx_mpp_dbg_show_one(struct seq_file *s,
+				  struct pinctrl_dev *pctldev,
+				  struct gpio_chip *chip,
+				  unsigned offset,
+				  unsigned gpio)
+{
+	struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
+	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+
+	static const char * const aout_lvls[] = {
+		"1v25", "1v25_2", "0v625", "0v3125", "mpp", "abus1", "abus2",
+		"abus3"
+	};
+
+	static const char * const amuxs[] = {
+		"amux5", "amux6", "amux7", "amux8", "amux9", "abus1", "abus2",
+		"abus3",
+	};
+
+	seq_printf(s, " mpp%-2d:", offset + 1);
+
+	switch (pin->mode) {
+	case PM8XXX_MPP_DIGITAL:
+		seq_puts(s, " digital ");
+		if (pin->dtest) {
+			seq_printf(s, "dtest%d\n", pin->dtest);
+		} else if (pin->input && pin->output) {
+			if (pin->high_z)
+				seq_puts(s, "bi-dir high-z");
+			else
+				seq_printf(s, "bi-dir %dOhm", pin->pullup);
+		} else if (pin->input) {
+			if (pin->dtest)
+				seq_printf(s, "in dtest%d", pin->dtest);
+			else
+				seq_puts(s, "in gpio");
+		} else if (pin->output) {
+			seq_puts(s, "out ");
+
+			if (!pin->paired) {
+				seq_puts(s, pin->output_value ?
+					 "high" : "low");
+			} else {
+				seq_puts(s, pin->output_value ?
+					 "inverted" : "follow");
+			}
+		}
+		break;
+	case PM8XXX_MPP_ANALOG:
+		seq_puts(s, " analog ");
+		if (pin->output) {
+			seq_printf(s, "out %s ", aout_lvls[pin->aout_level]);
+			if (!pin->paired) {
+				seq_puts(s, pin->output_value ?
+					 "high" : "low");
+			} else {
+				seq_puts(s, pin->output_value ?
+					 "inverted" : "follow");
+			}
+		} else {
+			seq_printf(s, "input mux %s", amuxs[pin->amux]);
+		}
+		break;
+	case PM8XXX_MPP_SINK:
+		seq_printf(s, " sink %dmA ", pin->drive_strength);
+		if (pin->dtest) {
+			seq_printf(s, "dtest%d", pin->dtest);
+		} else {
+			if (!pin->paired) {
+				seq_puts(s, pin->output_value ?
+					 "high" : "low");
+			} else {
+				seq_puts(s, pin->output_value ?
+					 "inverted" : "follow");
+			}
+		}
+		break;
+	}
+
+}
+
+static void pm8xxx_mpp_dbg_show(struct seq_file *s, struct gpio_chip *chip)
+{
+	unsigned gpio = chip->base;
+	unsigned i;
+
+	for (i = 0; i < chip->ngpio; i++, gpio++) {
+		pm8xxx_mpp_dbg_show_one(s, NULL, chip, i, gpio);
+		seq_puts(s, "\n");
+	}
+}
+
+#else
+#define msm_mpp_dbg_show NULL
+#endif
+
+static struct gpio_chip pm8xxx_mpp_template = {
+	.direction_input = pm8xxx_mpp_direction_input,
+	.direction_output = pm8xxx_mpp_direction_output,
+	.get = pm8xxx_mpp_get,
+	.set = pm8xxx_mpp_set,
+	.of_xlate = pm8xxx_mpp_of_xlate,
+	.to_irq = pm8xxx_mpp_to_irq,
+	.dbg_show = pm8xxx_mpp_dbg_show,
+	.owner = THIS_MODULE,
+};
+
+static int pm8xxx_pin_populate(struct pm8xxx_mpp *pctrl,
+			       struct pm8xxx_pin_data *pin)
+{
+	unsigned int val;
+	unsigned level;
+	unsigned ctrl;
+	unsigned type;
+	int ret;
+
+	ret = regmap_read(pctrl->regmap, pin->reg, &val);
+	if (ret) {
+		dev_err(pctrl->dev, "failed to read register\n");
+		return ret;
+	}
+
+	type = (val >> 5) & 7;
+	level = (val >> 2) & 7;
+	ctrl = (val) & 3;
+
+	switch (type) {
+	case PM8XXX_MPP_TYPE_D_INPUT:
+		pin->mode = PM8XXX_MPP_DIGITAL;
+		pin->input = true;
+		pin->power_source = level;
+		pin->dtest = ctrl;
+		break;
+	case PM8XXX_MPP_TYPE_D_OUTPUT:
+		pin->mode = PM8XXX_MPP_DIGITAL;
+		pin->output = true;
+		pin->power_source = level;
+		pin->output_value = !!(ctrl & BIT(0));
+		pin->paired = !!(ctrl & BIT(1));
+		break;
+	case PM8XXX_MPP_TYPE_D_BI_DIR:
+		pin->mode = PM8XXX_MPP_DIGITAL;
+		pin->input = true;
+		pin->output = true;
+		pin->power_source = level;
+		switch (ctrl) {
+		case PM8XXX_MPP_BI_PULLUP_1KOHM:
+			pin->pullup = 600;
+			break;
+		case PM8XXX_MPP_BI_PULLUP_OPEN:
+			pin->high_z = true;
+			break;
+		case PM8XXX_MPP_BI_PULLUP_10KOHM:
+			pin->pullup = 10000;
+			break;
+		case PM8XXX_MPP_BI_PULLUP_30KOHM:
+			pin->pullup = 30000;
+			break;
+		}
+		break;
+	case PM8XXX_MPP_TYPE_A_INPUT:
+		pin->mode = PM8XXX_MPP_ANALOG;
+		pin->input = true;
+		pin->amux = level;
+		break;
+	case PM8XXX_MPP_TYPE_A_OUTPUT:
+		pin->mode = PM8XXX_MPP_ANALOG;
+		pin->output = true;
+		pin->aout_level = level;
+		pin->output_value = !!(ctrl & BIT(0));
+		pin->paired = !!(ctrl & BIT(1));
+		break;
+	case PM8XXX_MPP_TYPE_SINK:
+		pin->mode = PM8XXX_MPP_SINK;
+		pin->drive_strength = 5 * (level + 1);
+		pin->output_value = !!(ctrl & BIT(0));
+		pin->paired = !!(ctrl & BIT(1));
+		break;
+	case PM8XXX_MPP_TYPE_DTEST_SINK:
+		pin->mode = PM8XXX_MPP_SINK;
+		pin->dtest = ctrl + 1;
+		pin->drive_strength = 5 * (level + 1);
+		break;
+	case PM8XXX_MPP_TYPE_DTEST_OUTPUT:
+		pin->mode = PM8XXX_MPP_DIGITAL;
+		pin->power_source = level;
+		if (ctrl >= 1)
+			pin->dtest = ctrl;
+		break;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id pm8xxx_mpp_of_match[] = {
+	{ .compatible = "qcom,pm8018-mpp", .data = (void *)6 },
+	{ .compatible = "qcom,pm8038-mpp", .data = (void *)6 },
+	{ .compatible = "qcom,pm8917-mpp", .data = (void *)10 },
+	{ .compatible = "qcom,pm8821-mpp", .data = (void *)4 },
+	{ .compatible = "qcom,pm8921-mpp", .data = (void *)12 },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, pm8xxx_mpp_of_match);
+
+static int pm8xxx_mpp_probe(struct platform_device *pdev)
+{
+	struct pm8xxx_pin_data *pin_data;
+	struct pinctrl_pin_desc *pins;
+	struct pm8xxx_mpp *pctrl;
+	int ret;
+	int i;
+
+	pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
+	if (!pctrl)
+		return -ENOMEM;
+
+	pctrl->dev = &pdev->dev;
+	pctrl->npins = (unsigned)of_device_get_match_data(&pdev->dev);
+
+	pctrl->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!pctrl->regmap) {
+		dev_err(&pdev->dev, "parent regmap unavailable\n");
+		return -ENXIO;
+	}
+
+	pctrl->desc = pm8xxx_pinctrl_desc;
+	pctrl->desc.npins = pctrl->npins;
+
+	pins = devm_kcalloc(&pdev->dev,
+			    pctrl->desc.npins,
+			    sizeof(struct pinctrl_pin_desc),
+			    GFP_KERNEL);
+	if (!pins)
+		return -ENOMEM;
+
+	pin_data = devm_kcalloc(&pdev->dev,
+				pctrl->desc.npins,
+				sizeof(struct pm8xxx_pin_data),
+				GFP_KERNEL);
+	if (!pin_data)
+		return -ENOMEM;
+
+	for (i = 0; i < pctrl->desc.npins; i++) {
+		pin_data[i].reg = SSBI_REG_ADDR_MPP(i);
+		pin_data[i].irq = platform_get_irq(pdev, i);
+		if (pin_data[i].irq < 0) {
+			dev_err(&pdev->dev,
+				"missing interrupts for pin %d\n", i);
+			return pin_data[i].irq;
+		}
+
+		ret = pm8xxx_pin_populate(pctrl, &pin_data[i]);
+		if (ret)
+			return ret;
+
+		pins[i].number = i;
+		pins[i].name = pm8xxx_groups[i];
+		pins[i].drv_data = &pin_data[i];
+	}
+	pctrl->desc.pins = pins;
+
+	pctrl->desc.num_custom_params = ARRAY_SIZE(pm8xxx_mpp_bindings);
+	pctrl->desc.custom_params = pm8xxx_mpp_bindings;
+#ifdef CONFIG_DEBUG_FS
+	pctrl->desc.custom_conf_items = pm8xxx_conf_items;
+#endif
+
+	pctrl->pctrl = pinctrl_register(&pctrl->desc, &pdev->dev, pctrl);
+	if (!pctrl->pctrl) {
+		dev_err(&pdev->dev, "couldn't register pm8xxx mpp driver\n");
+		return -ENODEV;
+	}
+
+	pctrl->chip = pm8xxx_mpp_template;
+	pctrl->chip.base = -1;
+	pctrl->chip.dev = &pdev->dev;
+	pctrl->chip.of_node = pdev->dev.of_node;
+	pctrl->chip.of_gpio_n_cells = 2;
+	pctrl->chip.label = dev_name(pctrl->dev);
+	pctrl->chip.ngpio = pctrl->npins;
+	ret = gpiochip_add(&pctrl->chip);
+	if (ret) {
+		dev_err(&pdev->dev, "failed register gpiochip\n");
+		goto unregister_pinctrl;
+	}
+
+	ret = gpiochip_add_pin_range(&pctrl->chip,
+				     dev_name(pctrl->dev),
+				     0, 0, pctrl->chip.ngpio);
+	if (ret) {
+		dev_err(pctrl->dev, "failed to add pin range\n");
+		goto unregister_gpiochip;
+	}
+
+	platform_set_drvdata(pdev, pctrl);
+
+	dev_dbg(&pdev->dev, "Qualcomm pm8xxx mpp driver probed\n");
+
+	return 0;
+
+unregister_gpiochip:
+	gpiochip_remove(&pctrl->chip);
+
+unregister_pinctrl:
+	pinctrl_unregister(pctrl->pctrl);
+
+	return ret;
+}
+
+static int pm8xxx_mpp_remove(struct platform_device *pdev)
+{
+	struct pm8xxx_mpp *pctrl = platform_get_drvdata(pdev);
+
+	gpiochip_remove(&pctrl->chip);
+
+	pinctrl_unregister(pctrl->pctrl);
+
+	return 0;
+}
+
+static struct platform_driver pm8xxx_mpp_driver = {
+	.driver = {
+		.name = "qcom-ssbi-mpp",
+		.of_match_table = pm8xxx_mpp_of_match,
+	},
+	.probe = pm8xxx_mpp_probe,
+	.remove = pm8xxx_mpp_remove,
+};
+
+module_platform_driver(pm8xxx_mpp_driver);
+
+MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
+MODULE_DESCRIPTION("Qualcomm PM8xxx MPP driver");
+MODULE_LICENSE("GPL v2");