Hi, On Sat, Oct 13, 2012 at 06:40:25PM +0530, Vikas Sajjan wrote: > Adding the suspend and resume functionality to exynos dwc3 driver
better commit log.
> Signed-off-by: Abhilash Kesavan <a.kesa...@samsung.com>
> Signed-off-by: Vikas C Sajjan <vikas.saj...@linaro.org>
> CC: Doug Anderson <diand...@chromium.org>
> ---
> drivers/usb/dwc3/dwc3-exynos.c | 39 +++++++++++++++++++++++++++++++++++++++
> 1 files changed, 39 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
> index ca65978..2781301 100644
> --- a/drivers/usb/dwc3/dwc3-exynos.c
> +++ b/drivers/usb/dwc3/dwc3-exynos.c
> @@ -15,6 +15,7 @@
> #include <linux/module.h>
> #include <linux/kernel.h>
> #include <linux/slab.h>
> +#include <linux/pm_runtime.h>
> #include <linux/platform_device.h>
> #include <linux/platform_data/dwc3-exynos.h>
> #include <linux/dma-mapping.h>
> @@ -200,11 +201,49 @@ static int __devexit dwc3_exynos_remove(struct
> platform_device *pdev)
> return 0;
> }
>
> +#ifdef CONFIG_PM
> +static int dwc3_exynos_suspend(struct device *dev)
> +{
> + struct dwc3_exynos *exynos = dev_get_drvdata(dev);
> +
> + BUG_ON(!exynos);
drop this. It's nonsense. This will never happen and if it does
clk_disable() call will already oops for us.
> +
> + clk_disable(exynos->clk);
> +
> + return 0;
> +}
> +
> +static int dwc3_exynos_resume(struct device *dev)
> +{
> + struct dwc3_exynos *exynos = dev_get_drvdata(dev);
> +
> + BUG_ON(!exynos);
drop this. It's nonsense. This will never happen and if it does
clk_enable() call will already oops for us.
> + clk_enable(exynos->clk);
> +
> + /* runtime set active to reflect active state. */
> + pm_runtime_disable(dev);
> + pm_runtime_set_active(dev);
> + pm_runtime_enable(dev);
> +
> + return 0;
> +}
> +
> +static const struct dev_pm_ops dwc3_exynos_pm_ops = {
> + .suspend = dwc3_exynos_suspend,
> + .resume = dwc3_exynos_resume,
use SET_SYSTEM_SLEEP_PM_OPS()
> +};
> +#define DWC3_EXYNOS_DEV_PM_OPS &(dwc3_exynos_pm_ops)
> +#else
> +#define DWC3_EXYNOS_DEV_PM_OPS NULL
> +#endif /* CONFIG_PM */
> +
> static struct platform_driver dwc3_exynos_driver = {
> .probe = dwc3_exynos_probe,
> .remove = __devexit_p(dwc3_exynos_remove),
> .driver = {
> .name = "exynos-dwc3",
> + .pm = DWC3_EXYNOS_DEV_PM_OPS,
> },
> };
>
> --
> 1.7.6.5
>
--
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