Enabling runtime power management on dwc3-exynos
letting dwc3 controller to be autosuspended on exynos
platform when not in use.
Signed-off-by: Vivek Gautam <gautam.vivek@xxxxxxxxxxx>
---
drivers/usb/dwc3/dwc3-exynos.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index 1ea7bd8..1ae81a0 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -19,6 +19,7 @@
#include <linux/platform_data/dwc3-exynos.h>
#include <linux/dma-mapping.h>
#include <linux/clk.h>
+#include <linux/pm_runtime.h>
#include <linux/usb/otg.h>
#include <linux/usb/nop-usb-xceiv.h>
#include <linux/of.h>
@@ -138,6 +139,11 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
exynos->dev = dev;
exynos->clk = clk;
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+ pm_runtime_get_sync(dev);
+ pm_runtime_forbid(dev);
+
clk_prepare_enable(exynos->clk);
if (node) {
@@ -152,10 +158,14 @@ static int dwc3_exynos_probe(struct platform_device *pdev)
goto err2;
}
+ pm_runtime_put_sync(dev);
+ pm_runtime_allow(dev);
+
return 0;
err2:
clk_disable_unprepare(clk);
+ pm_runtime_disable(dev);
err1:
return ret;
}
@@ -164,6 +174,8 @@ static int dwc3_exynos_remove(struct platform_device *pdev)
{
struct dwc3_exynos *exynos = platform_get_drvdata(pdev);
+ pm_runtime_disable(&pdev->dev);
+
platform_device_unregister(exynos->usb2_phy);
platform_device_unregister(exynos->usb3_phy);
device_for_each_child(&pdev->dev, NULL, dwc3_exynos_remove_child);
--
1.7.6.5
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