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* [PATCH V4] mmc: tegra: add sdhci tegra suspend and resume
@ 2019-04-11 19:18 ` Sowjanya Komatineni
  0 siblings, 0 replies; 3+ messages in thread
From: Sowjanya Komatineni @ 2019-04-11 19:18 UTC (permalink / raw)
  To: adrian.hunter, ulf.hansson, thierry.reding, jonathanh
  Cc: skomatineni, talho, anrao, bbiswas, linux-tegra, linux-kernel, linux-mmc

This patch adds suspend and resume PM ops for tegra SDHCI.

Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
 drivers/mmc/host/sdhci-tegra.c | 58 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 57 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index eafaaefab4a6..f608417ae967 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -1611,11 +1611,67 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int __maybe_unused sdhci_tegra_suspend(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	int ret;
+
+	if (host->mmc->caps2 & MMC_CAP2_CQE) {
+		ret = cqhci_suspend(host->mmc);
+		if (ret)
+			return ret;
+	}
+
+	ret = sdhci_suspend_host(host);
+	if (ret) {
+		cqhci_resume(host->mmc);
+		return ret;
+	}
+
+	clk_disable_unprepare(pltfm_host->clk);
+	return 0;
+}
+
+static int __maybe_unused sdhci_tegra_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	int ret;
+
+	ret = clk_prepare_enable(pltfm_host->clk);
+	if (ret)
+		return ret;
+
+	ret = sdhci_resume_host(host);
+	if (ret)
+		goto disable_clk;
+
+	if (host->mmc->caps2 & MMC_CAP2_CQE) {
+		ret = cqhci_resume(host->mmc);
+		if (ret)
+			goto suspend_host;
+	}
+
+	return 0;
+
+suspend_host:
+	sdhci_suspend_host(host);
+disable_clk:
+	clk_disable_unprepare(pltfm_host->clk);
+	return ret;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sdhci_tegra_dev_pm_ops, sdhci_tegra_suspend,
+			 sdhci_tegra_resume);
+
 static struct platform_driver sdhci_tegra_driver = {
 	.driver		= {
 		.name	= "sdhci-tegra",
 		.of_match_table = sdhci_tegra_dt_match,
-		.pm	= &sdhci_pltfm_pmops,
+		.pm	= &sdhci_tegra_dev_pm_ops,
 	},
 	.probe		= sdhci_tegra_probe,
 	.remove		= sdhci_tegra_remove,
-- 
2.7.4

^ permalink raw reply related	[flat|nested] 3+ messages in thread
* [PATCH V4] mmc: tegra: add sdhci tegra suspend and resume
@ 2019-04-11 19:18 ` Sowjanya Komatineni
  0 siblings, 0 replies; 3+ messages in thread
From: Sowjanya Komatineni @ 2019-04-11 19:18 UTC (permalink / raw)
  To: adrian.hunter, ulf.hansson, thierry.reding, jonathanh
  Cc: skomatineni, talho, anrao, bbiswas, linux-tegra, linux-kernel, linux-mmc

This patch adds suspend and resume PM ops for tegra SDHCI.

Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
 drivers/mmc/host/sdhci-tegra.c | 58 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 57 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index eafaaefab4a6..f608417ae967 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -1611,11 +1611,67 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int __maybe_unused sdhci_tegra_suspend(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	int ret;
+
+	if (host->mmc->caps2 & MMC_CAP2_CQE) {
+		ret = cqhci_suspend(host->mmc);
+		if (ret)
+			return ret;
+	}
+
+	ret = sdhci_suspend_host(host);
+	if (ret) {
+		cqhci_resume(host->mmc);
+		return ret;
+	}
+
+	clk_disable_unprepare(pltfm_host->clk);
+	return 0;
+}
+
+static int __maybe_unused sdhci_tegra_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	int ret;
+
+	ret = clk_prepare_enable(pltfm_host->clk);
+	if (ret)
+		return ret;
+
+	ret = sdhci_resume_host(host);
+	if (ret)
+		goto disable_clk;
+
+	if (host->mmc->caps2 & MMC_CAP2_CQE) {
+		ret = cqhci_resume(host->mmc);
+		if (ret)
+			goto suspend_host;
+	}
+
+	return 0;
+
+suspend_host:
+	sdhci_suspend_host(host);
+disable_clk:
+	clk_disable_unprepare(pltfm_host->clk);
+	return ret;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(sdhci_tegra_dev_pm_ops, sdhci_tegra_suspend,
+			 sdhci_tegra_resume);
+
 static struct platform_driver sdhci_tegra_driver = {
 	.driver		= {
 		.name	= "sdhci-tegra",
 		.of_match_table = sdhci_tegra_dt_match,
-		.pm	= &sdhci_pltfm_pmops,
+		.pm	= &sdhci_tegra_dev_pm_ops,
 	},
 	.probe		= sdhci_tegra_probe,
 	.remove		= sdhci_tegra_remove,
-- 
2.7.4


^ permalink raw reply related	[flat|nested] 3+ messages in thread
* Re: [PATCH V4] mmc: tegra: add sdhci tegra suspend and resume
  2019-04-11 19:18 ` Sowjanya Komatineni
  (?)
@ 2019-04-15 10:06 ` Ulf Hansson
  -1 siblings, 0 replies; 3+ messages in thread
From: Ulf Hansson @ 2019-04-15 10:06 UTC (permalink / raw)
  To: Sowjanya Komatineni
  Cc: Adrian Hunter, Thierry Reding, Jon Hunter, Timo Alho,
	Aniruddha Tvs Rao, bbiswas, linux-tegra,
	Linux Kernel Mailing List, linux-mmc

On Thu, 11 Apr 2019 at 21:18, Sowjanya Komatineni
<skomatineni@nvidia.com> wrote:
>
> This patch adds suspend and resume PM ops for tegra SDHCI.
>
> Acked-by: Thierry Reding <treding@nvidia.com>
> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/sdhci-tegra.c | 58 +++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 57 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
> index eafaaefab4a6..f608417ae967 100644
> --- a/drivers/mmc/host/sdhci-tegra.c
> +++ b/drivers/mmc/host/sdhci-tegra.c
> @@ -1611,11 +1611,67 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
>         return 0;
>  }
>
> +#ifdef CONFIG_PM_SLEEP
> +static int __maybe_unused sdhci_tegra_suspend(struct device *dev)
> +{
> +       struct sdhci_host *host = dev_get_drvdata(dev);
> +       struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +       int ret;
> +
> +       if (host->mmc->caps2 & MMC_CAP2_CQE) {
> +               ret = cqhci_suspend(host->mmc);
> +               if (ret)
> +                       return ret;
> +       }
> +
> +       ret = sdhci_suspend_host(host);
> +       if (ret) {
> +               cqhci_resume(host->mmc);
> +               return ret;
> +       }
> +
> +       clk_disable_unprepare(pltfm_host->clk);
> +       return 0;
> +}
> +
> +static int __maybe_unused sdhci_tegra_resume(struct device *dev)
> +{
> +       struct sdhci_host *host = dev_get_drvdata(dev);
> +       struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> +       int ret;
> +
> +       ret = clk_prepare_enable(pltfm_host->clk);
> +       if (ret)
> +               return ret;
> +
> +       ret = sdhci_resume_host(host);
> +       if (ret)
> +               goto disable_clk;
> +
> +       if (host->mmc->caps2 & MMC_CAP2_CQE) {
> +               ret = cqhci_resume(host->mmc);
> +               if (ret)
> +                       goto suspend_host;
> +       }
> +
> +       return 0;
> +
> +suspend_host:
> +       sdhci_suspend_host(host);
> +disable_clk:
> +       clk_disable_unprepare(pltfm_host->clk);
> +       return ret;
> +}
> +#endif
> +
> +static SIMPLE_DEV_PM_OPS(sdhci_tegra_dev_pm_ops, sdhci_tegra_suspend,
> +                        sdhci_tegra_resume);
> +
>  static struct platform_driver sdhci_tegra_driver = {
>         .driver         = {
>                 .name   = "sdhci-tegra",
>                 .of_match_table = sdhci_tegra_dt_match,
> -               .pm     = &sdhci_pltfm_pmops,
> +               .pm     = &sdhci_tegra_dev_pm_ops,
>         },
>         .probe          = sdhci_tegra_probe,
>         .remove         = sdhci_tegra_remove,
> --
> 2.7.4
>

^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2019-04-15 10:06 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-04-11 19:18 [PATCH V4] mmc: tegra: add sdhci tegra suspend and resume Sowjanya Komatineni
2019-04-11 19:18 ` Sowjanya Komatineni
2019-04-15 10:06 ` Ulf Hansson

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