From: Adrian Hunter <adrian.hunter@intel.com>
To: Pramod Gurav <pramod.gurav@linaro.org>, ulf.hansson@linaro.org
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
Ritesh Harjani <riteshh@codeaurora.org>,
Georgi Djakov <georgi.djakov@linaro.org>,
Stephen Boyd <sboyd@codeaurora.org>
Subject: Re: [PATCH] mmc: sdhci-msm: Add pm_runtime and system PM support
Date: Thu, 8 Sep 2016 10:47:54 +0300 [thread overview]
Message-ID: <79066adb-c45b-158f-99af-6d86e6de7513@intel.com> (raw)
In-Reply-To: <1466080509-24015-1-git-send-email-pramod.gurav@linaro.org>
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@linaro.org>
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,
> },
> };
>
>
next prev parent reply other threads:[~2016-09-08 7:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-16 12:35 [PATCH] mmc: sdhci-msm: Add pm_runtime and system PM support Pramod Gurav
2016-08-29 8:59 ` Pramod Gurav
2016-08-29 14:20 ` Ulf Hansson
2016-08-31 5:22 ` Pramod Gurav
2016-09-08 7:47 ` Adrian Hunter [this message]
2016-09-08 8:00 ` Adrian Hunter
2016-09-01 14:17 Pramod Gurav
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