regulator: tps65910 regulator: add device tree support

Add devicetree based initialization support for TI tps65910 regulators.

Signed-off-by: Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
index 5ee7e4bd8b58..60c95646f201 100644
--- a/drivers/regulator/tps65910-regulator.c
+++ b/drivers/regulator/tps65910-regulator.c
@@ -23,6 +23,7 @@
 #include <linux/slab.h>
 #include <linux/gpio.h>
 #include <linux/mfd/tps65910.h>
+#include <linux/regulator/of_regulator.h>
 
 #define TPS65910_SUPPLY_STATE_ENABLED   0x1
 #define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 |       \
@@ -1035,6 +1036,105 @@ static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
         return ret;
 }
 
+#ifdef CONFIG_OF
+
+static struct of_regulator_match tps65910_matches[] = {
+        { .name = "VRTC",       .driver_data = (void *) &tps65910_regs[0] },
+        { .name = "VIO",        .driver_data = (void *) &tps65910_regs[1] },
+        { .name = "VDD1",       .driver_data = (void *) &tps65910_regs[2] },
+        { .name = "VDD2",       .driver_data = (void *) &tps65910_regs[3] },
+        { .name = "VDD3",       .driver_data = (void *) &tps65910_regs[4] },
+        { .name = "VDIG1",      .driver_data = (void *) &tps65910_regs[5] },
+        { .name = "VDIG2",      .driver_data = (void *) &tps65910_regs[6] },
+        { .name = "VPLL",       .driver_data = (void *) &tps65910_regs[7] },
+        { .name = "VDAC",       .driver_data = (void *) &tps65910_regs[8] },
+        { .name = "VAUX1",      .driver_data = (void *) &tps65910_regs[9] },
+        { .name = "VAUX2",      .driver_data = (void *) &tps65910_regs[10] },
+        { .name = "VAUX33",     .driver_data = (void *) &tps65910_regs[11] },
+        { .name = "VMMC",       .driver_data = (void *) &tps65910_regs[12] },
+};
+
+static struct of_regulator_match tps65911_matches[] = {
+        { .name = "VRTC",       .driver_data = (void *) &tps65911_regs[0] },
+        { .name = "VIO",        .driver_data = (void *) &tps65911_regs[1] },
+        { .name = "VDD1",       .driver_data = (void *) &tps65911_regs[2] },
+        { .name = "VDD2",       .driver_data = (void *) &tps65911_regs[3] },
+        { .name = "VDDCTRL",    .driver_data = (void *) &tps65911_regs[4] },
+        { .name = "LDO1",       .driver_data = (void *) &tps65911_regs[5] },
+        { .name = "LDO2",       .driver_data = (void *) &tps65911_regs[6] },
+        { .name = "LDO3",       .driver_data = (void *) &tps65911_regs[7] },
+        { .name = "LDO4",       .driver_data = (void *) &tps65911_regs[8] },
+        { .name = "LDO5",       .driver_data = (void *) &tps65911_regs[9] },
+        { .name = "LDO6",       .driver_data = (void *) &tps65911_regs[10] },
+        { .name = "LDO7",       .driver_data = (void *) &tps65911_regs[11] },
+        { .name = "LDO8",       .driver_data = (void *) &tps65911_regs[12] },
+};
+
+static struct tps65910_board *tps65910_parse_dt_reg_data(
+                                struct platform_device *pdev)
+{
+        struct tps65910_board *pmic_plat_data;
+        struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
+        struct device_node *np = pdev->dev.parent->of_node;
+        struct device_node *regulators;
+        struct of_regulator_match *matches;
+        unsigned int prop;
+        int idx = 0, ret, count;
+
+        pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data),
+                                        GFP_KERNEL);
+
+        if (!pmic_plat_data) {
+                dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
+                return NULL;
+        }
+
+        regulators = of_find_node_by_name(np, "regulators");
+
+        switch (tps65910_chip_id(tps65910)) {
+        case TPS65910:
+                count = ARRAY_SIZE(tps65910_matches);
+                matches = tps65910_matches;
+                break;
+        case TPS65911:
+                count = ARRAY_SIZE(tps65911_matches);
+                matches = tps65911_matches;
+                break;
+        default:
+                pr_err("Invalid tps chip version\n");
+                return NULL;
+        }
+
+        ret = of_regulator_match(pdev->dev.parent, regulators, matches, count);
+        if (ret < 0) {
+                dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
+                        ret);
+                return NULL;
+        }
+
+        for (idx = 0; idx < count; idx++) {
+                if (!matches[idx].init_data || !matches[idx].of_node)
+                        continue;
+
+                pmic_plat_data->tps65910_pmic_init_data[idx] =
+                                                        matches[idx].init_data;
+
+                ret = of_property_read_u32(matches[idx].of_node,
+                                "ti,regulator-ext-sleep-control", &prop);
+                if (!ret)
+                        pmic_plat_data->regulator_ext_sleep_control[idx] = prop;
+        }
+
+        return pmic_plat_data;
+}
+#else
+static inline struct tps65910_board *tps65910_parse_dt_reg_data(
+                                struct platform_device *pdev)
+{
+        return 0;
+}
+#endif
+
 static __devinit int tps65910_probe(struct platform_device *pdev)
 {
         struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
@@ -1047,6 +1147,9 @@ static __devinit int tps65910_probe(struct platform_device *pdev)
         int i, err;
 
         pmic_plat_data = dev_get_platdata(tps65910->dev);
+        if (!pmic_plat_data && tps65910->dev->of_node)
+                pmic_plat_data = tps65910_parse_dt_reg_data(pdev);
+
         if (!pmic_plat_data)
                 return -EINVAL;
 
@@ -1154,6 +1257,11 @@ static __devinit int tps65910_probe(struct platform_device *pdev)
                 config.driver_data = pmic;
                 config.regmap = tps65910->regmap;
 
+#ifdef CONFIG_OF
+                config.of_node = of_find_node_by_name(tps65910->dev->of_node,
+                                                        info->name);
+#endif
+
                 rdev = regulator_register(&pmic->desc[i], &config);
                 if (IS_ERR(rdev)) {
                         dev_err(tps65910->dev,