regulator: arizona-ldo1: Add processing of init_data from device tree

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 32 insertions, 2 deletions

diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c
index 2248733ea394..d3787e11f535 100644
--- a/drivers/regulator/arizona-ldo1.c
+++ b/drivers/regulator/arizona-ldo1.c
@@ -19,6 +19,7 @@
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
 #include <linux/gpio.h>
 #include <linux/slab.h>
 
@@ -178,12 +179,39 @@ static const struct regulator_init_data arizona_ldo1_default = {
         .num_consumer_supplies = 1,
 };
 
-static int arizona_ldo1_of_get_pdata(struct arizona *arizona)
+static int arizona_ldo1_of_get_pdata(struct arizona *arizona,
+                                     struct regulator_config *config)
 {
         struct arizona_pdata *pdata = &arizona->pdata;
+        struct arizona_ldo1 *ldo1 = config->driver_data;
+        struct device_node *init_node, *dcvdd_node;
+        struct regulator_init_data *init_data;
 
         pdata->ldoena = arizona_of_get_named_gpio(arizona, "wlf,ldoena", true);
 
+        init_node = of_get_child_by_name(arizona->dev->of_node, "ldo1");
+        dcvdd_node = of_parse_phandle(arizona->dev->of_node, "DCVDD-supply", 0);
+
+        if (init_node) {
+                config->of_node = init_node;
+
+                init_data = of_get_regulator_init_data(arizona->dev, init_node);
+
+                if (init_data) {
+                        init_data->consumer_supplies = &ldo1->supply;
+                        init_data->num_consumer_supplies = 1;
+
+                        if (dcvdd_node && dcvdd_node != init_node)
+                                arizona->external_dcvdd = true;
+
+                        pdata->ldo1 = init_data;
+                }
+        } else if (dcvdd_node) {
+                arizona->external_dcvdd = true;
+        }
+
+        of_node_put(dcvdd_node);
+
         return 0;
 }
 
@@ -230,7 +258,7 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
 
         if (IS_ENABLED(CONFIG_OF)) {
                 if (!dev_get_platdata(arizona->dev)) {
-                        ret = arizona_ldo1_of_get_pdata(arizona);
+                        ret = arizona_ldo1_of_get_pdata(arizona, &config);
                         if (ret < 0)
                                 return ret;
                 }
@@ -258,6 +286,8 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
                 return ret;
         }
 
+        of_node_put(config.of_node);
+
         platform_set_drvdata(pdev, ldo1);
 
         return 0;