On 16/06/16 15:35, Pramod Gurav wrote:
> Provides runtime PM callbacks to enable and disable clock resources
> when idle. Also support system PM callbacks to be called during system
> suspend and resume.
>
> Signed-off-by: Pramod Gurav <pramod.gurav@xxxxxxxxxx>
Can we get some Tested/Reviewed/Acked-by from people using this driver?
> ---
> drivers/mmc/host/sdhci-msm.c | 57 ++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 57 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> index 0653fe7..f4394c8 100644
> --- a/drivers/mmc/host/sdhci-msm.c
> +++ b/drivers/mmc/host/sdhci-msm.c
> @@ -18,6 +18,7 @@
> #include <linux/of_device.h>
> #include <linux/delay.h>
> #include <linux/mmc/mmc.h>
> +#include <linux/pm_runtime.h>
> #include <linux/slab.h>
>
> #include "sdhci-pltfm.h"
> @@ -549,6 +550,11 @@ static int sdhci_msm_probe(struct platform_device *pdev)
> if (ret)
> goto clk_disable;
>
> + platform_set_drvdata(pdev, msm_host);
> +
> + pm_runtime_set_active(&pdev->dev);
> + pm_runtime_enable(&pdev->dev);
> +
> return 0;
>
> clk_disable:
> @@ -580,12 +586,63 @@ static int sdhci_msm_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static int sdhci_msm_runtime_suspend(struct device *dev)
> +{
> + struct sdhci_msm_host *msm_host = dev_get_drvdata(dev);
> +
> + clk_disable_unprepare(msm_host->clk);
> + clk_disable_unprepare(msm_host->pclk);
> +
> + return 0;
> +}
> +
> +static int sdhci_msm_runtime_resume(struct device *dev)
> +{
> + struct sdhci_msm_host *msm_host = dev_get_drvdata(dev);
> + int ret;
> +
> + ret = clk_prepare_enable(msm_host->clk);
> + if (ret) {
> + dev_err(dev, "clk_enable failed: %d\n", ret);
> + return ret;
> + }
> + ret = clk_prepare_enable(msm_host->pclk);
> + if (ret) {
> + dev_err(dev, "clk_enable failed: %d\n", ret);
> + clk_disable_unprepare(msm_host->clk);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int sdhci_msm_suspend(struct device *dev)
> +{
> + pm_runtime_force_suspend(dev);
> +
> + return 0;
> +}
> +
> +static int sdhci_msm_resume(struct device *dev)
> +{
> + pm_runtime_force_resume(dev);
> +
> + return 0;
> +}
> +
> +static const struct dev_pm_ops sdhci_msm_pm_ops = {
> + SET_LATE_SYSTEM_SLEEP_PM_OPS(sdhci_msm_suspend, sdhci_msm_resume)
> + SET_RUNTIME_PM_OPS(sdhci_msm_runtime_suspend, sdhci_msm_runtime_resume,
> + NULL)
> +};
> +
> static struct platform_driver sdhci_msm_driver = {
> .probe = sdhci_msm_probe,
> .remove = sdhci_msm_remove,
> .driver = {
> .name = "sdhci_msm",
> .of_match_table = sdhci_msm_dt_match,
> + .pm = &sdhci_msm_pm_ops,
> },
> };
>
>
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