--- /dev/null
+/*
+ * 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 pm8xxx_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 long)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 (IS_ERR(pctrl->pctrl)) {
+ dev_err(&pdev->dev, "couldn't register pm8xxx mpp driver\n");
+ return PTR_ERR(pctrl->pctrl);
+ }
+
+ 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");
Code Review / kvmfornfv.git / blobdiff