pinctrl: qcom: ssbi: Family A gpio & mpp drivers
authorBjorn Andersson <bjorn.andersson@sonymobile.com>
Wed, 15 Jul 2015 06:40:35 +0000 (23:40 -0700)
committerLinus Walleij <linus.walleij@linaro.org>
Fri, 17 Jul 2015 19:56:14 +0000 (21:56 +0200)
This introduces pinctrl drivers for gpio and mpp blocks found in family A
PMICs.

Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Documentation/devicetree/bindings/pinctrl/qcom,pmic-mpp.txt
drivers/pinctrl/qcom/Kconfig
drivers/pinctrl/qcom/Makefile
drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c [new file with mode: 0644]
drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c [new file with mode: 0644]
include/dt-bindings/pinctrl/qcom,pmic-mpp.h

index b096d8351b8fcfe28440b46ff08d067b873bd139..d7803a2a94e9be4c089a3ed69f8eaa23e935ee80 100644 (file)
@@ -7,8 +7,13 @@ of PMIC's from Qualcomm.
        Usage: required
        Value type: <string>
        Definition: Should contain one of:
+                   "qcom,pm8018-mpp",
+                   "qcom,pm8038-mpp",
+                   "qcom,pm8821-mpp",
                    "qcom,pm8841-mpp",
                    "qcom,pm8916-mpp",
+                   "qcom,pm8917-mpp",
+                   "qcom,pm8921-mpp",
                    "qcom,pm8941-mpp",
                    "qcom,pma8084-mpp",
 
index 58f5632b27f45074f802c6a14bf9673ac710585f..8eef820b216e61c3388ff06158a2da95b78b719c 100644 (file)
@@ -76,4 +76,16 @@ config PINCTRL_QCOM_SPMI_PMIC
          which are using SPMI for communication with SoC. Example PMIC's
          devices are pm8841, pm8941 and pma8084.
 
+config PINCTRL_QCOM_SSBI_PMIC
+       tristate "Qualcomm SSBI PMIC pin controller driver"
+       depends on GPIOLIB && OF
+       select PINMUX
+       select PINCONF
+       select GENERIC_PINCONF
+       help
+         This is the pinctrl, pinmux, pinconf and gpiolib driver for the
+         Qualcomm GPIO and MPP blocks found in the Qualcomm PMIC's chips,
+         which are using SSBI for communication with SoC. Example PMIC's
+         devices are pm8058 and pm8921.
+
 endif
index 3666c703ce8890690f552ef7ed6ee2aaf589aed3..e321f7ab325bd9e72a2aee84587ddee67bbec6e5 100644 (file)
@@ -9,3 +9,5 @@ obj-$(CONFIG_PINCTRL_MSM8X74)   += pinctrl-msm8x74.o
 obj-$(CONFIG_PINCTRL_MSM8916)  += pinctrl-msm8916.o
 obj-$(CONFIG_PINCTRL_QCOM_SPMI_PMIC) += pinctrl-spmi-gpio.o
 obj-$(CONFIG_PINCTRL_QCOM_SPMI_PMIC) += pinctrl-spmi-mpp.o
+obj-$(CONFIG_PINCTRL_QCOM_SSBI_PMIC) += pinctrl-ssbi-gpio.o
+obj-$(CONFIG_PINCTRL_QCOM_SSBI_PMIC) += pinctrl-ssbi-mpp.o
diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c
new file mode 100644 (file)
index 0000000..c978b31
--- /dev/null
@@ -0,0 +1,791 @@
+/*
+ * 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-gpio.h>
+
+#include "../core.h"
+#include "../pinctrl-utils.h"
+
+/* mode */
+#define PM8XXX_GPIO_MODE_ENABLED       BIT(0)
+#define PM8XXX_GPIO_MODE_INPUT         0
+#define PM8XXX_GPIO_MODE_OUTPUT                2
+
+/* output buffer */
+#define PM8XXX_GPIO_PUSH_PULL          0
+#define PM8XXX_GPIO_OPEN_DRAIN         1
+
+/* bias */
+#define PM8XXX_GPIO_BIAS_PU_30         0
+#define PM8XXX_GPIO_BIAS_PU_1P5                1
+#define PM8XXX_GPIO_BIAS_PU_31P5       2
+#define PM8XXX_GPIO_BIAS_PU_1P5_30     3
+#define PM8XXX_GPIO_BIAS_PD            4
+#define PM8XXX_GPIO_BIAS_NP            5
+
+/* GPIO registers */
+#define SSBI_REG_ADDR_GPIO_BASE                0x150
+#define SSBI_REG_ADDR_GPIO(n)          (SSBI_REG_ADDR_GPIO_BASE + n)
+
+#define PM8XXX_BANK_WRITE              BIT(7)
+
+#define PM8XXX_MAX_GPIOS               44
+
+/* custom pinconf parameters */
+#define PM8XXX_QCOM_DRIVE_STRENGH      (PIN_CONFIG_END + 1)
+#define PM8XXX_QCOM_PULL_UP_STRENGTH   (PIN_CONFIG_END + 2)
+
+/**
+ * struct pm8xxx_pin_data - dynamic configuration for a pin
+ * @reg:               address of the control register
+ * @irq:               IRQ from the PMIC interrupt controller
+ * @power_source:      logical selected voltage source, mapping in static data
+ *                     is used translate to register values
+ * @mode:              operating mode for the pin (input/output)
+ * @open_drain:        output buffer configured as open-drain (vs push-pull)
+ * @output_value:      configured output value
+ * @bias:              register view of configured bias
+ * @pull_up_strength:  placeholder for selected pull up strength
+ *                     only used to configure bias when pull up is selected
+ * @output_strength:   selector of output-strength
+ * @disable:           pin disabled / configured as tristate
+ * @function:          pinmux selector
+ * @inverted:          pin logic is inverted
+ */
+struct pm8xxx_pin_data {
+       unsigned reg;
+       int irq;
+       u8 power_source;
+       u8 mode;
+       bool open_drain;
+       bool output_value;
+       u8 bias;
+       u8 pull_up_strength;
+       u8 output_strength;
+       bool disable;
+       u8 function;
+       bool inverted;
+};
+
+struct pm8xxx_gpio {
+       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_gpio_bindings[] = {
+       {"qcom,drive-strength",         PM8XXX_QCOM_DRIVE_STRENGH,      0},
+       {"qcom,pull-up-strength",       PM8XXX_QCOM_PULL_UP_STRENGTH,   0},
+};
+
+#ifdef CONFIG_DEBUG_FS
+static const struct pin_config_item pm8xxx_conf_items[ARRAY_SIZE(pm8xxx_gpio_bindings)] = {
+       PCONFDUMP(PM8XXX_QCOM_DRIVE_STRENGH, "drive-strength", NULL, true),
+       PCONFDUMP(PM8XXX_QCOM_PULL_UP_STRENGTH,  "pull up strength", NULL, true),
+};
+#endif
+
+static const char * const pm8xxx_groups[PM8XXX_MAX_GPIOS] = {
+       "gpio1", "gpio2", "gpio3", "gpio4", "gpio5", "gpio6", "gpio7", "gpio8",
+       "gpio9", "gpio10", "gpio11", "gpio12", "gpio13", "gpio14", "gpio15",
+       "gpio16", "gpio17", "gpio18", "gpio19", "gpio20", "gpio21", "gpio22",
+       "gpio23", "gpio24", "gpio25", "gpio26", "gpio27", "gpio28", "gpio29",
+       "gpio30", "gpio31", "gpio32", "gpio33", "gpio34", "gpio35", "gpio36",
+       "gpio37", "gpio38", "gpio39", "gpio40", "gpio41", "gpio42", "gpio43",
+       "gpio44",
+};
+
+static const char * const pm8xxx_gpio_functions[] = {
+       PMIC_GPIO_FUNC_NORMAL, PMIC_GPIO_FUNC_PAIRED,
+       PMIC_GPIO_FUNC_FUNC1, PMIC_GPIO_FUNC_FUNC2,
+       PMIC_GPIO_FUNC_DTEST1, PMIC_GPIO_FUNC_DTEST2,
+       PMIC_GPIO_FUNC_DTEST3, PMIC_GPIO_FUNC_DTEST4,
+};
+
+static int pm8xxx_read_bank(struct pm8xxx_gpio *pctrl,
+                           struct pm8xxx_pin_data *pin, int bank)
+{
+       unsigned int val = bank << 4;
+       int ret;
+
+       ret = regmap_write(pctrl->regmap, pin->reg, val);
+       if (ret) {
+               dev_err(pctrl->dev, "failed to select bank %d\n", bank);
+               return ret;
+       }
+
+       ret = regmap_read(pctrl->regmap, pin->reg, &val);
+       if (ret) {
+               dev_err(pctrl->dev, "failed to read register %d\n", bank);
+               return ret;
+       }
+
+       return val;
+}
+
+static int pm8xxx_write_bank(struct pm8xxx_gpio *pctrl,
+                            struct pm8xxx_pin_data *pin,
+                            int bank,
+                            u8 val)
+{
+       int ret;
+
+       val |= PM8XXX_BANK_WRITE;
+       val |= bank << 4;
+
+       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_gpio *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_gpio *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_gpio_functions);
+}
+
+static const char *pm8xxx_get_function_name(struct pinctrl_dev *pctldev,
+                                           unsigned function)
+{
+       return pm8xxx_gpio_functions[function];
+}
+
+static int pm8xxx_get_function_groups(struct pinctrl_dev *pctldev,
+                                     unsigned function,
+                                     const char * const **groups,
+                                     unsigned * const num_groups)
+{
+       struct pm8xxx_gpio *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_gpio *pctrl = pinctrl_dev_get_drvdata(pctldev);
+       struct pm8xxx_pin_data *pin = pctrl->desc.pins[group].drv_data;
+       u8 val;
+
+       pin->function = function;
+       val = pin->function << 1;
+
+       pm8xxx_write_bank(pctrl, pin, 4, val);
+
+       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_gpio *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_DISABLE:
+               arg = pin->bias == PM8XXX_GPIO_BIAS_NP;
+               break;
+       case PIN_CONFIG_BIAS_PULL_DOWN:
+               arg = pin->bias == PM8XXX_GPIO_BIAS_PD;
+               break;
+       case PIN_CONFIG_BIAS_PULL_UP:
+               arg = pin->bias <= PM8XXX_GPIO_BIAS_PU_1P5_30;
+               break;
+       case PM8XXX_QCOM_PULL_UP_STRENGTH:
+               arg = pin->pull_up_strength;
+               break;
+       case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+               arg = pin->disable;
+               break;
+       case PIN_CONFIG_INPUT_ENABLE:
+               arg = pin->mode == PM8XXX_GPIO_MODE_INPUT;
+               break;
+       case PIN_CONFIG_OUTPUT:
+               if (pin->mode & PM8XXX_GPIO_MODE_OUTPUT)
+                       arg = pin->output_value;
+               else
+                       arg = 0;
+               break;
+       case PIN_CONFIG_POWER_SOURCE:
+               arg = pin->power_source;
+               break;
+       case PM8XXX_QCOM_DRIVE_STRENGH:
+               arg = pin->output_strength;
+               break;
+       case PIN_CONFIG_DRIVE_PUSH_PULL:
+               arg = !pin->open_drain;
+               break;
+       case PIN_CONFIG_DRIVE_OPEN_DRAIN:
+               arg = pin->open_drain;
+               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_gpio *pctrl = pinctrl_dev_get_drvdata(pctldev);
+       struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+       unsigned param;
+       unsigned arg;
+       unsigned i;
+       u8 banks = 0;
+       u8 val;
+
+       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_DISABLE:
+                       pin->bias = PM8XXX_GPIO_BIAS_NP;
+                       banks |= BIT(2);
+                       pin->disable = 0;
+                       banks |= BIT(3);
+                       break;
+               case PIN_CONFIG_BIAS_PULL_DOWN:
+                       pin->bias = PM8XXX_GPIO_BIAS_PD;
+                       banks |= BIT(2);
+                       pin->disable = 0;
+                       banks |= BIT(3);
+                       break;
+               case PM8XXX_QCOM_PULL_UP_STRENGTH:
+                       if (arg > PM8XXX_GPIO_BIAS_PU_1P5_30) {
+                               dev_err(pctrl->dev, "invalid pull-up strength\n");
+                               return -EINVAL;
+                       }
+                       pin->pull_up_strength = arg;
+                       /* FALLTHROUGH */
+               case PIN_CONFIG_BIAS_PULL_UP:
+                       pin->bias = pin->pull_up_strength;
+                       banks |= BIT(2);
+                       pin->disable = 0;
+                       banks |= BIT(3);
+                       break;
+               case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+                       pin->disable = 1;
+                       banks |= BIT(3);
+                       break;
+               case PIN_CONFIG_INPUT_ENABLE:
+                       pin->mode = PM8XXX_GPIO_MODE_INPUT;
+                       banks |= BIT(0) | BIT(1);
+                       break;
+               case PIN_CONFIG_OUTPUT:
+                       pin->mode = PM8XXX_GPIO_MODE_OUTPUT;
+                       pin->output_value = !!arg;
+                       banks |= BIT(0) | BIT(1);
+                       break;
+               case PIN_CONFIG_POWER_SOURCE:
+                       pin->power_source = arg;
+                       banks |= BIT(0);
+                       break;
+               case PM8XXX_QCOM_DRIVE_STRENGH:
+                       if (arg > PMIC_GPIO_STRENGTH_LOW) {
+                               dev_err(pctrl->dev, "invalid drive strength\n");
+                               return -EINVAL;
+                       }
+                       pin->output_strength = arg;
+                       banks |= BIT(3);
+                       break;
+               case PIN_CONFIG_DRIVE_PUSH_PULL:
+                       pin->open_drain = 0;
+                       banks |= BIT(1);
+                       break;
+               case PIN_CONFIG_DRIVE_OPEN_DRAIN:
+                       pin->open_drain = 1;
+                       banks |= BIT(1);
+                       break;
+               default:
+                       dev_err(pctrl->dev,
+                               "unsupported config parameter: %x\n",
+                               param);
+                       return -EINVAL;
+               }
+       }
+
+       if (banks & BIT(0)) {
+               val = pin->power_source << 1;
+               val |= PM8XXX_GPIO_MODE_ENABLED;
+               pm8xxx_write_bank(pctrl, pin, 0, val);
+       }
+
+       if (banks & BIT(1)) {
+               val = pin->mode << 2;
+               val |= pin->open_drain << 1;
+               val |= pin->output_value;
+               pm8xxx_write_bank(pctrl, pin, 1, val);
+       }
+
+       if (banks & BIT(2)) {
+               val = pin->bias << 1;
+               pm8xxx_write_bank(pctrl, pin, 2, val);
+       }
+
+       if (banks & BIT(3)) {
+               val = pin->output_strength << 2;
+               val |= pin->disable;
+               pm8xxx_write_bank(pctrl, pin, 3, val);
+       }
+
+       if (banks & BIT(4)) {
+               val = pin->function << 1;
+               pm8xxx_write_bank(pctrl, pin, 4, val);
+       }
+
+       if (banks & BIT(5)) {
+               val = 0;
+               if (!pin->inverted)
+                       val |= BIT(3);
+               pm8xxx_write_bank(pctrl, pin, 5, val);
+       }
+
+       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_gpio",
+       .pctlops = &pm8xxx_pinctrl_ops,
+       .pmxops = &pm8xxx_pinmux_ops,
+       .confops = &pm8xxx_pinconf_ops,
+       .owner = THIS_MODULE,
+};
+
+static int pm8xxx_gpio_direction_input(struct gpio_chip *chip,
+                                      unsigned offset)
+{
+       struct pm8xxx_gpio *pctrl = container_of(chip, struct pm8xxx_gpio, chip);
+       struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+       u8 val;
+
+       pin->mode = PM8XXX_GPIO_MODE_INPUT;
+       val = pin->mode << 2;
+
+       pm8xxx_write_bank(pctrl, pin, 1, val);
+
+       return 0;
+}
+
+static int pm8xxx_gpio_direction_output(struct gpio_chip *chip,
+                                       unsigned offset,
+                                       int value)
+{
+       struct pm8xxx_gpio *pctrl = container_of(chip, struct pm8xxx_gpio, chip);
+       struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+       u8 val;
+
+       pin->mode = PM8XXX_GPIO_MODE_OUTPUT;
+       pin->output_value = !!value;
+
+       val = pin->mode << 2;
+       val |= pin->open_drain << 1;
+       val |= pin->output_value;
+
+       pm8xxx_write_bank(pctrl, pin, 1, val);
+
+       return 0;
+}
+
+static int pm8xxx_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+       struct pm8xxx_gpio *pctrl = container_of(chip, struct pm8xxx_gpio, chip);
+       struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+       bool state;
+       int ret;
+
+       if (pin->mode == PM8XXX_GPIO_MODE_OUTPUT) {
+               ret = pin->output_value;
+       } else {
+               ret = irq_get_irqchip_state(pin->irq, IRQCHIP_STATE_LINE_LEVEL, &state);
+               if (!ret)
+                       ret = !!state;
+       }
+
+       return ret;
+}
+
+static void pm8xxx_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+       struct pm8xxx_gpio *pctrl = container_of(chip, struct pm8xxx_gpio, chip);
+       struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+       u8 val;
+
+       pin->output_value = !!value;
+
+       val = pin->mode << 2;
+       val |= pin->open_drain << 1;
+       val |= pin->output_value;
+
+       pm8xxx_write_bank(pctrl, pin, 1, val);
+}
+
+static int pm8xxx_gpio_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_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+       struct pm8xxx_gpio *pctrl = container_of(chip, struct pm8xxx_gpio, 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_gpio_dbg_show_one(struct seq_file *s,
+                                 struct pinctrl_dev *pctldev,
+                                 struct gpio_chip *chip,
+                                 unsigned offset,
+                                 unsigned gpio)
+{
+       struct pm8xxx_gpio *pctrl = container_of(chip, struct pm8xxx_gpio, chip);
+       struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
+
+       static const char * const modes[] = {
+               "in", "both", "out", "off"
+       };
+       static const char * const biases[] = {
+               "pull-up 30uA", "pull-up 1.5uA", "pull-up 31.5uA",
+               "pull-up 1.5uA + 30uA boost", "pull-down 10uA", "no pull"
+       };
+       static const char * const buffer_types[] = {
+               "push-pull", "open-drain"
+       };
+       static const char * const strengths[] = {
+               "no", "high", "medium", "low"
+       };
+
+       seq_printf(s, " gpio%-2d:", offset + 1);
+       if (pin->disable) {
+               seq_puts(s, " ---");
+       } else {
+               seq_printf(s, " %-4s", modes[pin->mode]);
+               seq_printf(s, " %-7s", pm8xxx_gpio_functions[pin->function]);
+               seq_printf(s, " VIN%d", pin->power_source);
+               seq_printf(s, " %-27s", biases[pin->bias]);
+               seq_printf(s, " %-10s", buffer_types[pin->open_drain]);
+               seq_printf(s, " %-4s", pin->output_value ? "high" : "low");
+               seq_printf(s, " %-7s", strengths[pin->output_strength]);
+               if (pin->inverted)
+                       seq_puts(s, " inverted");
+       }
+}
+
+static void pm8xxx_gpio_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_gpio_dbg_show_one(s, NULL, chip, i, gpio);
+               seq_puts(s, "\n");
+       }
+}
+
+#else
+#define msm_gpio_dbg_show NULL
+#endif
+
+static struct gpio_chip pm8xxx_gpio_template = {
+       .direction_input = pm8xxx_gpio_direction_input,
+       .direction_output = pm8xxx_gpio_direction_output,
+       .get = pm8xxx_gpio_get,
+       .set = pm8xxx_gpio_set,
+       .of_xlate = pm8xxx_gpio_of_xlate,
+       .to_irq = pm8xxx_gpio_to_irq,
+       .dbg_show = pm8xxx_gpio_dbg_show,
+       .owner = THIS_MODULE,
+};
+
+static int pm8xxx_pin_populate(struct pm8xxx_gpio *pctrl,
+                              struct pm8xxx_pin_data *pin)
+{
+       int val;
+
+       val = pm8xxx_read_bank(pctrl, pin, 0);
+       if (val < 0)
+               return val;
+
+       pin->power_source = (val >> 1) & 0x7;
+
+       val = pm8xxx_read_bank(pctrl, pin, 1);
+       if (val < 0)
+               return val;
+
+       pin->mode = (val >> 2) & 0x3;
+       pin->open_drain = !!(val & BIT(1));
+       pin->output_value = val & BIT(0);
+
+       val = pm8xxx_read_bank(pctrl, pin, 2);
+       if (val < 0)
+               return val;
+
+       pin->bias = (val >> 1) & 0x7;
+       if (pin->bias <= PM8XXX_GPIO_BIAS_PU_1P5_30)
+               pin->pull_up_strength = pin->bias;
+       else
+               pin->pull_up_strength = PM8XXX_GPIO_BIAS_PU_30;
+
+       val = pm8xxx_read_bank(pctrl, pin, 3);
+       if (val < 0)
+               return val;
+
+       pin->output_strength = (val >> 2) & 0x3;
+       pin->disable = val & BIT(0);
+
+       val = pm8xxx_read_bank(pctrl, pin, 4);
+       if (val < 0)
+               return val;
+
+       pin->function = (val >> 1) & 0x7;
+
+       val = pm8xxx_read_bank(pctrl, pin, 5);
+       if (val < 0)
+               return val;
+
+       pin->inverted = !(val & BIT(3));
+
+       return 0;
+}
+
+static const struct of_device_id pm8xxx_gpio_of_match[] = {
+       { .compatible = "qcom,pm8018-gpio", .data = (void *)6 },
+       { .compatible = "qcom,pm8038-gpio", .data = (void *)12 },
+       { .compatible = "qcom,pm8058-gpio", .data = (void *)40 },
+       { .compatible = "qcom,pm8917-gpio", .data = (void *)38 },
+       { .compatible = "qcom,pm8921-gpio", .data = (void *)44 },
+       { },
+};
+MODULE_DEVICE_TABLE(of, pm8xxx_gpio_of_match);
+
+static int pm8xxx_gpio_probe(struct platform_device *pdev)
+{
+       struct pm8xxx_pin_data *pin_data;
+       struct pinctrl_pin_desc *pins;
+       struct pm8xxx_gpio *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_GPIO(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_gpio_bindings);
+       pctrl->desc.custom_params = pm8xxx_gpio_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 gpio driver\n");
+               return -ENODEV;
+       }
+
+       pctrl->chip = pm8xxx_gpio_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 gpio driver probed\n");
+
+       return 0;
+
+unregister_gpiochip:
+       gpiochip_remove(&pctrl->chip);
+
+unregister_pinctrl:
+       pinctrl_unregister(pctrl->pctrl);
+
+       return ret;
+}
+
+static int pm8xxx_gpio_remove(struct platform_device *pdev)
+{
+       struct pm8xxx_gpio *pctrl = platform_get_drvdata(pdev);
+
+       gpiochip_remove(&pctrl->chip);
+
+       pinctrl_unregister(pctrl->pctrl);
+
+       return 0;
+}
+
+static struct platform_driver pm8xxx_gpio_driver = {
+       .driver = {
+               .name = "qcom-ssbi-gpio",
+               .of_match_table = pm8xxx_gpio_of_match,
+       },
+       .probe = pm8xxx_gpio_probe,
+       .remove = pm8xxx_gpio_remove,
+};
+
+module_platform_driver(pm8xxx_gpio_driver);
+
+MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
+MODULE_DESCRIPTION("Qualcomm PM8xxx GPIO driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c b/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
new file mode 100644 (file)
index 0000000..2d1b69f
--- /dev/null
@@ -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");
index c10205491f8d6589f3d63ab21eb6d01d7d4ac049..a15c1704d0ec6175878640bbba81baae8d5a64bc 100644 (file)
@@ -7,6 +7,47 @@
 #define _DT_BINDINGS_PINCTRL_QCOM_PMIC_MPP_H
 
 /* power-source */
+
+/* Digital Input/Output: level [PM8058] */
+#define PM8058_MPP_VPH                 0
+#define PM8058_MPP_S3                  1
+#define PM8058_MPP_L2                  2
+#define PM8058_MPP_L3                  3
+
+/* Digital Input/Output: level [PM8901] */
+#define PM8901_MPP_MSMIO               0
+#define PM8901_MPP_DIG                 1
+#define PM8901_MPP_L5                  2
+#define PM8901_MPP_S4                  3
+#define PM8901_MPP_VPH                 4
+
+/* Digital Input/Output: level [PM8921] */
+#define PM8921_MPP_S4                  1
+#define PM8921_MPP_L15                 3
+#define PM8921_MPP_L17                 4
+#define PM8921_MPP_VPH                 7
+
+/* Digital Input/Output: level [PM8821] */
+#define PM8821_MPP_1P8                 0
+#define PM8821_MPP_VPH                 7
+
+/* Digital Input/Output: level [PM8018] */
+#define PM8018_MPP_L4                  0
+#define PM8018_MPP_L14                 1
+#define PM8018_MPP_S3                  2
+#define PM8018_MPP_L6                  3
+#define PM8018_MPP_L2                  4
+#define PM8018_MPP_L5                  5
+#define PM8018_MPP_VPH                 7
+
+/* Digital Input/Output: level [PM8038] */
+#define PM8038_MPP_L20                 0
+#define PM8038_MPP_L11                 1
+#define PM8038_MPP_L5                  2
+#define PM8038_MPP_L15                 3
+#define PM8038_MPP_L17                 4
+#define PM8038_MPP_VPH                 7
+
 #define PM8841_MPP_VPH                 0
 #define PM8841_MPP_S3                  2
 
 #define PMIC_MPP_AMUX_ROUTE_ABUS3      6
 #define PMIC_MPP_AMUX_ROUTE_ABUS4      7
 
+/* Analog Output: level */
+#define PMIC_MPP_AOUT_LVL_1V25         0
+#define PMIC_MPP_AOUT_LVL_1V25_2       1
+#define PMIC_MPP_AOUT_LVL_0V625                2
+#define PMIC_MPP_AOUT_LVL_0V3125       3
+#define PMIC_MPP_AOUT_LVL_MPP          4
+#define PMIC_MPP_AOUT_LVL_ABUS1                5
+#define PMIC_MPP_AOUT_LVL_ABUS2                6
+#define PMIC_MPP_AOUT_LVL_ABUS3                7
+
 /* To be used with "function" */
 #define PMIC_MPP_FUNC_NORMAL           "normal"
 #define PMIC_MPP_FUNC_PAIRED           "paired"