| Message ID | 20200515141926.52e088fe@xhacker.debian (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | mmc: sdhci-of-dwcmshc: add suspend/resume support | expand |
On Fri, 15 May 2020 at 08:19, Jisheng Zhang <Jisheng.Zhang@synaptics.com> wrote: > > Add dwcmshc specific system-level suspend and resume support. > > Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> 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 >
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,
Add dwcmshc specific system-level suspend and resume support. Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> --- drivers/mmc/host/sdhci-of-dwcmshc.c | 43 +++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+)