On Fri, 15 May 2020 at 08:19, Jisheng Zhang <Jisheng.Zhang@xxxxxxxxxxxxx> wrote:
>
> Add dwcmshc specific system-level suspend and resume support.
>
> Signed-off-by: Jisheng Zhang <Jisheng.Zhang@xxxxxxxxxxxxx>
Applied for next, thanks!
Kind regards
Uffe
> ---
> drivers/mmc/host/sdhci-of-dwcmshc.c | 43 +++++++++++++++++++++++++++++
> 1 file changed, 43 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
> index a9ed0e006e06..64ac0dbee95c 100644
> --- a/drivers/mmc/host/sdhci-of-dwcmshc.c
> +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
> @@ -163,6 +163,48 @@ static int dwcmshc_remove(struct platform_device *pdev)
> return 0;
> }
>
> +#ifdef CONFIG_PM_SLEEP
> +static int dwcmshc_suspend(struct device *dev)
> +{
> + struct sdhci_host *host = dev_get_drvdata(dev);
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct dwcmshc_priv *priv = sdhci_pltfm_priv(pltfm_host);
> + int ret;
> +
> + ret = sdhci_suspend_host(host);
> + if (ret)
> + return ret;
> +
> + clk_disable_unprepare(pltfm_host->clk);
> + if (!IS_ERR(priv->bus_clk))
> + clk_disable_unprepare(priv->bus_clk);
> +
> + return ret;
> +}
> +
> +static int dwcmshc_resume(struct device *dev)
> +{
> + struct sdhci_host *host = dev_get_drvdata(dev);
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct dwcmshc_priv *priv = sdhci_pltfm_priv(pltfm_host);
> + int ret;
> +
> + ret = clk_prepare_enable(pltfm_host->clk);
> + if (ret)
> + return ret;
> +
> + if (!IS_ERR(priv->bus_clk)) {
> + ret = clk_prepare_enable(priv->bus_clk);
> + if (ret)
> + return ret;
> + }
> +
> + return sdhci_resume_host(host);
> +}
> +#endif
> +
> +static SIMPLE_DEV_PM_OPS(dwcmshc_pmops, dwcmshc_suspend, dwcmshc_resume);
> +
> static const struct of_device_id sdhci_dwcmshc_dt_ids[] = {
> { .compatible = "snps,dwcmshc-sdhci" },
> {}
> @@ -173,6 +215,7 @@ static struct platform_driver sdhci_dwcmshc_driver = {
> .driver = {
> .name = "sdhci-dwcmshc",
> .of_match_table = sdhci_dwcmshc_dt_ids,
> + .pm = &dwcmshc_pmops,
> },
> .probe = dwcmshc_probe,
> .remove = dwcmshc_remove,
> --
> 2.26.2
>
