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authorRoger Quadros <rogerq@ti.com>2013-03-12 13:24:22 +0200
committerFelipe Balbi <balbi@ti.com>2013-03-18 11:14:46 +0200
commit58f735fe4778d34d9d1e37bcdd59325d66a8793e (patch)
tree9ed73cd21e2429aea1937eab730aef866aff2631 /drivers/usb/otg/nop-usb-xceiv.c
parent2319fb88e16e56c64d4f3ab50af69ed6dadbc7b5 (diff)
downloadop-kernel-dev-58f735fe4778d34d9d1e37bcdd59325d66a8793e.zip
op-kernel-dev-58f735fe4778d34d9d1e37bcdd59325d66a8793e.tar.gz
usb: phy: nop: Handle power supply regulator for the PHY
We use "vcc" as the supply name for the PHY's power supply. The power supply will be enabled during .init() and disabled during .shutdown() Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/otg/nop-usb-xceiv.c')
-rw-r--r--drivers/usb/otg/nop-usb-xceiv.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c
index 17c174f..fbdcfef 100644
--- a/drivers/usb/otg/nop-usb-xceiv.c
+++ b/drivers/usb/otg/nop-usb-xceiv.c
@@ -33,11 +33,13 @@
#include <linux/usb/nop-usb-xceiv.h>
#include <linux/slab.h>
#include <linux/clk.h>
+#include <linux/regulator/consumer.h>
struct nop_usb_xceiv {
struct usb_phy phy;
struct device *dev;
struct clk *clk;
+ struct regulator *vcc;
};
static struct platform_device *pd;
@@ -70,6 +72,11 @@ static int nop_init(struct usb_phy *phy)
{
struct nop_usb_xceiv *nop = dev_get_drvdata(phy->dev);
+ if (!IS_ERR(nop->vcc)) {
+ if (regulator_enable(nop->vcc))
+ dev_err(phy->dev, "Failed to enable power\n");
+ }
+
if (!IS_ERR(nop->clk))
clk_enable(nop->clk);
@@ -82,6 +89,11 @@ static void nop_shutdown(struct usb_phy *phy)
if (!IS_ERR(nop->clk))
clk_disable(nop->clk);
+
+ if (!IS_ERR(nop->vcc)) {
+ if (regulator_disable(nop->vcc))
+ dev_err(phy->dev, "Failed to disable power\n");
+ }
}
static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget)
@@ -154,6 +166,12 @@ static int nop_usb_xceiv_probe(struct platform_device *pdev)
}
}
+ nop->vcc = devm_regulator_get(&pdev->dev, "vcc");
+ if (IS_ERR(nop->vcc)) {
+ dev_dbg(&pdev->dev, "Error getting vcc regulator: %ld\n",
+ PTR_ERR(nop->vcc));
+ }
+
nop->dev = &pdev->dev;
nop->phy.dev = nop->dev;
nop->phy.label = "nop-xceiv";
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