When device is stopped or suspended clock is not needed so we
can disable it for this time.
Signed-off-by: Robert Baldyga <r.baldyga@xxxxxxxxxxx>
---
drivers/usb/dwc2/gadget.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 2a7c014..0523bc3 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -2884,6 +2884,8 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget,
hsotg->gadget.dev.of_node = hsotg->dev->of_node;
hsotg->gadget.speed = USB_SPEED_UNKNOWN;
+ clk_enable(hsotg->clk);
+
ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies),
hsotg->supplies);
if (ret) {
@@ -2932,6 +2934,8 @@ static int s3c_hsotg_udc_stop(struct usb_gadget *gadget,
regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies);
+ clk_disable(hsotg->clk);
+
return 0;
}
@@ -2963,8 +2967,10 @@ static int s3c_hsotg_pullup(struct usb_gadget *gadget, int is_on)
spin_lock_irqsave(&hsotg->lock, flags);
if (is_on) {
s3c_hsotg_phy_enable(hsotg);
+ clk_enable(hsotg->clk);
s3c_hsotg_core_init(hsotg);
} else {
+ clk_disable(hsotg->clk);
s3c_hsotg_phy_disable(hsotg);
}
@@ -3640,6 +3646,7 @@ static int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state)
ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies),
hsotg->supplies);
+ clk_disable(hsotg->clk);
}
return ret;
@@ -3654,6 +3661,8 @@ static int s3c_hsotg_resume(struct platform_device *pdev)
if (hsotg->driver) {
dev_info(hsotg->dev, "resuming usb gadget %s\n",
hsotg->driver->driver.name);
+
+ clk_enable(hsotg->clk);
ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies),
hsotg->supplies);
}
--
1.9.1
--
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