X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Famba%2Fbus.c;h=e7df019d29d44731b7eacf035b5edd5de78a3780;hb=1542dec1c9109fdcd1c53460f064096f24fc49d2;hp=2737b97522052e7a653eb9c7622132a07a6bcded;hpb=a4dd8dce14014665862ce7911b38cb2c69e366dd;p=pandora-kernel.git

diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 2737b9752205..e7df019d29d4 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -147,6 +147,39 @@ static void amba_put_disable_pclk(struct amba_device *pcdev)
 	clk_put(pclk);
 }
 
+static int amba_get_enable_vcore(struct amba_device *pcdev)
+{
+	struct regulator *vcore = regulator_get(&pcdev->dev, "vcore");
+	int ret;
+
+	pcdev->vcore = vcore;
+
+	if (IS_ERR(vcore)) {
+		/* It is OK not to supply a vcore regulator */
+		if (PTR_ERR(vcore) == -ENODEV)
+			return 0;
+		return PTR_ERR(vcore);
+	}
+
+	ret = regulator_enable(vcore);
+	if (ret) {
+		regulator_put(vcore);
+		pcdev->vcore = ERR_PTR(-ENODEV);
+	}
+
+	return ret;
+}
+
+static void amba_put_disable_vcore(struct amba_device *pcdev)
+{
+	struct regulator *vcore = pcdev->vcore;
+
+	if (!IS_ERR(vcore)) {
+		regulator_disable(vcore);
+		regulator_put(vcore);
+	}
+}
+
 /*
  * These are the device model conversion veneers; they convert the
  * device model structures to our more specific structures.
@@ -159,6 +192,10 @@ static int amba_probe(struct device *dev)
 	int ret;
 
 	do {
+		ret = amba_get_enable_vcore(pcdev);
+		if (ret)
+			break;
+
 		ret = amba_get_enable_pclk(pcdev);
 		if (ret)
 			break;
@@ -168,6 +205,7 @@ static int amba_probe(struct device *dev)
 			break;
 
 		amba_put_disable_pclk(pcdev);
+		amba_put_disable_vcore(pcdev);
 	} while (0);
 
 	return ret;
@@ -180,6 +218,7 @@ static int amba_remove(struct device *dev)
 	int ret = drv->remove(pcdev);
 
 	amba_put_disable_pclk(pcdev);
+	amba_put_disable_vcore(pcdev);
 
 	return ret;
 }