| Message ID | 1364824448-14732-6-git-send-email-gautam.vivek@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Apr 01, 2013 at 07:24:04PM +0530, Vivek Gautam wrote: > 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@samsung.com> > --- > 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); don't you want to use autosuspend() to avoid consecutive suspend/resume calls when controller is under use ?
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);
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@samsung.com> --- drivers/usb/dwc3/dwc3-exynos.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-)