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>

diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c
index 2248733ea3948cdd30d8213b81530c5bfed633d9..d3787e11f535155e6479bc52c54053bffded71aa 100644 (file)
--- 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;