1 files changed, 42 insertions, 19 deletions

diff --git a/drivers/regulator/wm8994-regulator.c b/drivers/regulator/wm8994-regulator.c
index 6ff872342648..a612c356a697 100644
--- a/drivers/regulator/wm8994-regulator.c
+++ b/drivers/regulator/wm8994-regulator.c
@@ -18,6 +18,7 @@
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
 #include <linux/gpio.h>
 #include <linux/slab.h>
 
@@ -28,6 +29,8 @@
 struct wm8994_ldo {
 	struct regulator_dev *regulator;
 	struct wm8994 *wm8994;
+	struct regulator_consumer_supply supply;
+	struct regulator_init_data init_data;
 };
 
 #define WM8994_LDO1_MAX_SELECTOR 0x7
@@ -99,6 +102,26 @@ static const struct regulator_desc wm8994_ldo_desc[] = {
 	},
 };
 
+static const struct regulator_consumer_supply wm8994_ldo_consumer[] = {
+	{ .supply = "AVDD1" },
+	{ .supply = "DCVDD" },
+};
+
+static const struct regulator_init_data wm8994_ldo_default[] = {
+	{
+		.constraints = {
+			.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+		},
+		.num_consumer_supplies = 1,
+	},
+	{
+		.constraints = {
+			.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+		},
+		.num_consumer_supplies = 1,
+	},
+};
+
 static int wm8994_ldo_probe(struct platform_device *pdev)
 {
 	struct wm8994 *wm8994 = dev_get_drvdata(pdev->dev.parent);
@@ -117,13 +140,29 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
 	}
 
 	ldo->wm8994 = wm8994;
+	ldo->supply = wm8994_ldo_consumer[id];
+	ldo->supply.dev_name = dev_name(wm8994->dev);
 
 	config.dev = wm8994->dev;
 	config.driver_data = ldo;
 	config.regmap = wm8994->regmap;
-	if (pdata) {
-		config.init_data = pdata->ldo[id].init_data;
+	config.init_data = &ldo->init_data;
+	if (pdata)
 		config.ena_gpio = pdata->ldo[id].enable;
+	else if (wm8994->dev->of_node)
+		config.ena_gpio = wm8994->pdata.ldo[id].enable;
+
+	/* Use default constraints if none set up */
+	if (!pdata || !pdata->ldo[id].init_data || wm8994->dev->of_node) {
+		dev_dbg(wm8994->dev, "Using default init data, supply %s %s\n",
+			ldo->supply.dev_name, ldo->supply.supply);
+
+		ldo->init_data = wm8994_ldo_default[id];
+		ldo->init_data.consumer_supplies = &ldo->supply;
+		if (!config.ena_gpio)
+			ldo->init_data.constraints.valid_ops_mask = 0;
+	} else {
+		ldo->init_data = *pdata->ldo[id].init_data;
 	}
 
 	ldo->regulator = regulator_register(&wm8994_ldo_desc[id], &config);
@@ -162,23 +201,7 @@ static struct platform_driver wm8994_ldo_driver = {
 	},
 };
 
-static int __init wm8994_ldo_init(void)
-{
-	int ret;
-
-	ret = platform_driver_register(&wm8994_ldo_driver);
-	if (ret != 0)
-		pr_err("Failed to register Wm8994 GP LDO driver: %d\n", ret);
-
-	return ret;
-}
-subsys_initcall(wm8994_ldo_init);
-
-static void __exit wm8994_ldo_exit(void)
-{
-	platform_driver_unregister(&wm8994_ldo_driver);
-}
-module_exit(wm8994_ldo_exit);
+module_platform_driver(wm8994_ldo_driver);
 
 /* Module information */
 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");