1 files changed, 206 insertions, 62 deletions

diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
index 33b65c9ad5d5..8a831947c351 100644
--- a/drivers/regulator/s5m8767.c
+++ b/drivers/regulator/s5m8767.c
@@ -14,6 +14,7 @@
 #include <linux/bug.h>
 #include <linux/err.h>
 #include <linux/gpio.h>
+#include <linux/of_gpio.h>
 #include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -21,6 +22,9 @@
 #include <linux/regulator/machine.h>
 #include <linux/mfd/samsung/core.h>
 #include <linux/mfd/samsung/s5m8767.h>
+#include <linux/regulator/of_regulator.h>
+
+#define S5M8767_OPMODE_NORMAL_MODE 0x1
 
 struct s5m8767_info {
         struct device *dev;
@@ -255,10 +259,8 @@ static int s5m8767_reg_disable(struct regulator_dev *rdev)
         return sec_reg_update(s5m8767->iodev, reg, ~mask, mask);
 }
 
-static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
+static int s5m8767_get_vsel_reg(int reg_id, struct s5m8767_info *s5m8767)
 {
-        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
-        int reg_id = rdev_get_id(rdev);
         int reg;
 
         switch (reg_id) {
@@ -296,43 +298,18 @@ static int s5m8767_get_voltage_register(struct regulator_dev *rdev, int *_reg)
                 return -EINVAL;
         }
 
-        *_reg = reg;
-
-        return 0;
-}
-
-static int s5m8767_get_voltage_sel(struct regulator_dev *rdev)
-{
-        struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
-        int reg, mask, ret;
-        int reg_id = rdev_get_id(rdev);
-        unsigned int val;
-
-        ret = s5m8767_get_voltage_register(rdev, &reg);
-        if (ret)
-                return ret;
-
-        mask = (reg_id < S5M8767_BUCK1) ? 0x3f : 0xff;
-
-        ret = sec_reg_read(s5m8767->iodev, reg, &val);
-        if (ret)
-                return ret;
-
-        val &= mask;
-
-        return val;
+        return reg;
 }
 
-static int s5m8767_convert_voltage_to_sel(
-                const struct sec_voltage_desc *desc,
-                int min_vol, int max_vol)
+static int s5m8767_convert_voltage_to_sel(const struct sec_voltage_desc *desc,
+                                          int min_vol)
 {
         int selector = 0;
 
         if (desc == NULL)
                 return -EINVAL;
 
-        if (max_vol < desc->min || min_vol > desc->max)
+        if (min_vol > desc->max)
                 return -EINVAL;
 
         if (min_vol < desc->min)
@@ -340,7 +317,7 @@ static int s5m8767_convert_voltage_to_sel(
 
         selector = DIV_ROUND_UP(min_vol - desc->min, desc->step);
 
-        if (desc->min + desc->step * selector > max_vol)
+        if (desc->min + desc->step * selector > desc->max)
                 return -EINVAL;
 
         return selector;
@@ -373,15 +350,13 @@ static int s5m8767_set_voltage_sel(struct regulator_dev *rdev,
 {
         struct s5m8767_info *s5m8767 = rdev_get_drvdata(rdev);
         int reg_id = rdev_get_id(rdev);
-        int reg, mask, ret = 0, old_index, index = 0;
+        int old_index, index = 0;
         u8 *buck234_vol = NULL;
 
         switch (reg_id) {
         case S5M8767_LDO1 ... S5M8767_LDO28:
-                mask = 0x3f;
                 break;
         case S5M8767_BUCK1 ... S5M8767_BUCK6:
-                mask = 0xff;
                 if (reg_id == S5M8767_BUCK2 && s5m8767->buck2_gpiodvs)
                         buck234_vol = &s5m8767->buck2_vol[0];
                 else if (reg_id == S5M8767_BUCK3 && s5m8767->buck3_gpiodvs)
@@ -392,7 +367,6 @@ static int s5m8767_set_voltage_sel(struct regulator_dev *rdev,
         case S5M8767_BUCK7 ... S5M8767_BUCK8:
                 return -EINVAL;
         case S5M8767_BUCK9:
-                mask = 0xff;
                 break;
         default:
                 return -EINVAL;
@@ -412,11 +386,7 @@ static int s5m8767_set_voltage_sel(struct regulator_dev *rdev,
                 else
                         return s5m8767_set_low(s5m8767);
         } else {
-                ret = s5m8767_get_voltage_register(rdev, &reg);
-                if (ret)
-                        return ret;
-
-                return sec_reg_update(s5m8767->iodev, reg, selector, mask);
+                return regulator_set_voltage_sel_regmap(rdev, selector);
         }
 }
 
@@ -441,7 +411,7 @@ static struct regulator_ops s5m8767_ops = {
         .is_enabled             = s5m8767_reg_is_enabled,
         .enable                 = s5m8767_reg_enable,
         .disable                = s5m8767_reg_disable,
-        .get_voltage_sel        = s5m8767_get_voltage_sel,
+        .get_voltage_sel        = regulator_get_voltage_sel_regmap,
         .set_voltage_sel        = s5m8767_set_voltage_sel,
         .set_voltage_time_sel   = s5m8767_set_voltage_time_sel,
 };
@@ -508,10 +478,182 @@ static struct regulator_desc regulators[] = {
         s5m8767_regulator_desc(BUCK9),
 };
 
+#ifdef CONFIG_OF
+static int s5m8767_pmic_dt_parse_dvs_gpio(struct sec_pmic_dev *iodev,
+                        struct sec_platform_data *pdata,
+                        struct device_node *pmic_np)
+{
+        int i, gpio;
+
+        for (i = 0; i < 3; i++) {
+                gpio = of_get_named_gpio(pmic_np,
+                                        "s5m8767,pmic-buck-dvs-gpios", i);
+                if (!gpio_is_valid(gpio)) {
+                        dev_err(iodev->dev, "invalid gpio[%d]: %d\n", i, gpio);
+                        return -EINVAL;
+                }
+                pdata->buck_gpios[i] = gpio;
+        }
+        return 0;
+}
+
+static int s5m8767_pmic_dt_parse_ds_gpio(struct sec_pmic_dev *iodev,
+                        struct sec_platform_data *pdata,
+                        struct device_node *pmic_np)
+{
+        int i, gpio;
+
+        for (i = 0; i < 3; i++) {
+                gpio = of_get_named_gpio(pmic_np,
+                                        "s5m8767,pmic-buck-ds-gpios", i);
+                if (!gpio_is_valid(gpio)) {
+                        dev_err(iodev->dev, "invalid gpio[%d]: %d\n", i, gpio);
+                        return -EINVAL;
+                }
+                pdata->buck_ds[i] = gpio;
+        }
+        return 0;
+}
+
+static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
+                                        struct sec_platform_data *pdata)
+{
+        struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+        struct device_node *pmic_np, *regulators_np, *reg_np;
+        struct sec_regulator_data *rdata;
+        struct sec_opmode_data *rmode;
+        unsigned int i, dvs_voltage_nr = 1, ret;
+
+        pmic_np = iodev->dev->of_node;
+        if (!pmic_np) {
+                dev_err(iodev->dev, "could not find pmic sub-node\n");
+                return -ENODEV;
+        }
+
+        regulators_np = of_find_node_by_name(pmic_np, "regulators");
+        if (!regulators_np) {
+                dev_err(iodev->dev, "could not find regulators sub-node\n");
+                return -EINVAL;
+        }
+
+        /* count the number of regulators to be supported in pmic */
+        pdata->num_regulators = of_get_child_count(regulators_np);
+
+        rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) *
+                                pdata->num_regulators, GFP_KERNEL);
+        if (!rdata) {
+                dev_err(iodev->dev,
+                        "could not allocate memory for regulator data\n");
+                return -ENOMEM;
+        }
+
+        rmode = devm_kzalloc(&pdev->dev, sizeof(*rmode) *
+                                pdata->num_regulators, GFP_KERNEL);
+        if (!rdata) {
+                dev_err(iodev->dev,
+                        "could not allocate memory for regulator mode\n");
+                return -ENOMEM;
+        }
+
+        pdata->regulators = rdata;
+        pdata->opmode = rmode;
+        for_each_child_of_node(regulators_np, reg_np) {
+                for (i = 0; i < ARRAY_SIZE(regulators); i++)
+                        if (!of_node_cmp(reg_np->name, regulators[i].name))
+                                break;
+
+                if (i == ARRAY_SIZE(regulators)) {
+                        dev_warn(iodev->dev,
+                        "don't know how to configure regulator %s\n",
+                        reg_np->name);
+                        continue;
+                }
+
+                rdata->id = i;
+                rdata->initdata = of_get_regulator_init_data(
+                                                &pdev->dev, reg_np);
+                rdata->reg_node = reg_np;
+                rdata++;
+                rmode->id = i;
+                if (of_property_read_u32(reg_np, "op_mode",
+                                &rmode->mode)) {
+                        dev_warn(iodev->dev,
+                                "no op_mode property property at %s\n",
+                                reg_np->full_name);
+
+                        rmode->mode = S5M8767_OPMODE_NORMAL_MODE;
+                }
+                rmode++;
+        }
+
+        if (of_get_property(pmic_np, "s5m8767,pmic-buck2-uses-gpio-dvs", NULL))
+                pdata->buck2_gpiodvs = true;
+
+        if (of_get_property(pmic_np, "s5m8767,pmic-buck3-uses-gpio-dvs", NULL))
+                pdata->buck3_gpiodvs = true;
+
+        if (of_get_property(pmic_np, "s5m8767,pmic-buck4-uses-gpio-dvs", NULL))
+                pdata->buck4_gpiodvs = true;
+
+        if (pdata->buck2_gpiodvs || pdata->buck3_gpiodvs ||
+                                                pdata->buck4_gpiodvs) {
+                ret = s5m8767_pmic_dt_parse_dvs_gpio(iodev, pdata, pmic_np);
+                if (ret)
+                        return -EINVAL;
+
+                if (of_property_read_u32(pmic_np,
+                                "s5m8767,pmic-buck-default-dvs-idx",
+                                &pdata->buck_default_idx)) {
+                        pdata->buck_default_idx = 0;
+                } else {
+                        if (pdata->buck_default_idx >= 8) {
+                                pdata->buck_default_idx = 0;
+                                dev_info(iodev->dev,
+                                "invalid value for default dvs index, use 0\n");
+                        }
+                }
+                dvs_voltage_nr = 8;
+        }
+
+        ret = s5m8767_pmic_dt_parse_ds_gpio(iodev, pdata, pmic_np);
+        if (ret)
+                return -EINVAL;
+
+        if (of_property_read_u32_array(pmic_np,
+                                "s5m8767,pmic-buck2-dvs-voltage",
+                                pdata->buck2_voltage, dvs_voltage_nr)) {
+                dev_err(iodev->dev, "buck2 voltages not specified\n");
+                return -EINVAL;
+        }
+
+        if (of_property_read_u32_array(pmic_np,
+                                "s5m8767,pmic-buck3-dvs-voltage",
+                                pdata->buck3_voltage, dvs_voltage_nr)) {
+                dev_err(iodev->dev, "buck3 voltages not specified\n");
+                return -EINVAL;
+        }
+
+        if (of_property_read_u32_array(pmic_np,
+                                "s5m8767,pmic-buck4-dvs-voltage",
+                                pdata->buck4_voltage, dvs_voltage_nr)) {
+                dev_err(iodev->dev, "buck4 voltages not specified\n");
+                return -EINVAL;
+        }
+
+        return 0;
+}
+#else
+static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
+                                        struct sec_platform_data *pdata)
+{
+        return 0;
+}
+#endif /* CONFIG_OF */
+
 static int s5m8767_pmic_probe(struct platform_device *pdev)
 {
         struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
-        struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
+        struct sec_platform_data *pdata = iodev->pdata;
         struct regulator_config config = { };
         struct regulator_dev **rdev;
         struct s5m8767_info *s5m8767;
@@ -522,6 +664,12 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
                 return -ENODEV;
         }
 
+        if (iodev->dev->of_node) {
+                ret = s5m8767_pmic_dt_parse_pdata(pdev, pdata);
+                if (ret)
+                        return ret;
+        }
+
         if (pdata->buck2_gpiodvs) {
                 if (pdata->buck3_gpiodvs || pdata->buck4_gpiodvs) {
                         dev_err(&pdev->dev, "S5M8767 GPIO DVS NOT VALID\n");
@@ -577,23 +725,17 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
         s5m8767->opmode = pdata->opmode;
 
         buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
-                                                pdata->buck2_init,
-                                                pdata->buck2_init +
-                                                buck_voltage_val2.step);
+                                                   pdata->buck2_init);
 
         sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK2DVS2, buck_init);
 
         buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
-                                                pdata->buck3_init,
-                                                pdata->buck3_init +
-                                                buck_voltage_val2.step);
+                                                   pdata->buck3_init);
 
         sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK3DVS2, buck_init);
 
         buck_init = s5m8767_convert_voltage_to_sel(&buck_voltage_val2,
-                                                pdata->buck4_init,
-                                                pdata->buck4_init +
-                                                buck_voltage_val2.step);
+                                                   pdata->buck4_init);
 
         sec_reg_write(s5m8767->iodev, S5M8767_REG_BUCK4DVS2, buck_init);
 
@@ -602,27 +744,21 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
                         s5m8767->buck2_vol[i] =
                                 s5m8767_convert_voltage_to_sel(
                                                 &buck_voltage_val2,
-                                                pdata->buck2_voltage[i],
-                                                pdata->buck2_voltage[i] +
-                                                buck_voltage_val2.step);
+                                                pdata->buck2_voltage[i]);
                 }
 
                 if (s5m8767->buck3_gpiodvs) {
                         s5m8767->buck3_vol[i] =
                                 s5m8767_convert_voltage_to_sel(
                                                 &buck_voltage_val2,
-                                                pdata->buck3_voltage[i],
-                                                pdata->buck3_voltage[i] +
-                                                buck_voltage_val2.step);
+                                                pdata->buck3_voltage[i]);
                 }
 
                 if (s5m8767->buck4_gpiodvs) {
                         s5m8767->buck4_vol[i] =
                                 s5m8767_convert_voltage_to_sel(
                                                 &buck_voltage_val2,
-                                                pdata->buck4_voltage[i],
-                                                pdata->buck4_voltage[i] +
-                                                buck_voltage_val2.step);
+                                                pdata->buck4_voltage[i]);
                 }
         }
 
@@ -760,11 +896,19 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
                                 (desc->max - desc->min) / desc->step + 1;
                         regulators[id].min_uV = desc->min;
                         regulators[id].uV_step = desc->step;
+                        regulators[id].vsel_reg =
+                                s5m8767_get_vsel_reg(id, s5m8767);
+                        if (id < S5M8767_BUCK1)
+                                regulators[id].vsel_mask = 0x3f;
+                        else
+                                regulators[id].vsel_mask = 0xff;
                 }
 
                 config.dev = s5m8767->dev;
                 config.init_data = pdata->regulators[i].initdata;
                 config.driver_data = s5m8767;
+                config.regmap = iodev->regmap;
+                config.of_node = pdata->regulators[i].reg_node;
 
                 rdev[i] = regulator_register(&regulators[id], &config);
                 if (IS_ERR(rdev[i])) {