linux-kernel - Re: [PATCH V1] mmc: sdhci-msm: Set IO pins in low power state during suspend

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Date:   Wed, 8 Jul 2020 15:33:07 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Veerabhadrarao Badiganti <vbadigan@...eaurora.org>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Andy Gross <agross@...nel.org>
Subject: Re: [PATCH V1] mmc: sdhci-msm: Set IO pins in low power state during suspend

On Wed, 8 Jul 2020 at 15:12, Veerabhadrarao Badiganti
<vbadigan@...eaurora.org> wrote:
>
> Configure SDHC IO pins with low power configuration when the driver
> is in suspend state.
>
> Signed-off-by: Veerabhadrarao Badiganti <vbadigan@...eaurora.org>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  drivers/mmc/host/sdhci-msm.c | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> index 392d41d57a6e..efd2bae1430c 100644
> --- a/drivers/mmc/host/sdhci-msm.c
> +++ b/drivers/mmc/host/sdhci-msm.c
> @@ -15,6 +15,7 @@
>  #include <linux/iopoll.h>
>  #include <linux/regulator/consumer.h>
>  #include <linux/interconnect.h>
> +#include <linux/pinctrl/consumer.h>
>
>  #include "sdhci-pltfm.h"
>  #include "cqhci.h"
> @@ -1352,6 +1353,19 @@ static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host,
>                 sdhci_msm_hs400(host, &mmc->ios);
>  }
>
> +static int sdhci_msm_set_pincfg(struct sdhci_msm_host *msm_host, bool level)
> +{
> +       struct platform_device *pdev = msm_host->pdev;
> +       int ret;
> +
> +       if (level)
> +               ret = pinctrl_pm_select_default_state(&pdev->dev);
> +       else
> +               ret = pinctrl_pm_select_sleep_state(&pdev->dev);
> +
> +       return ret;
> +}
> +
>  static int sdhci_msm_set_vmmc(struct mmc_host *mmc)
>  {
>         if (IS_ERR(mmc->supply.vmmc))
> @@ -1596,6 +1610,9 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
>                         ret = sdhci_msm_set_vqmmc(msm_host, mmc,
>                                         pwr_state & REQ_BUS_ON);
>                 if (!ret)
> +                       ret = sdhci_msm_set_pincfg(msm_host,
> +                                       pwr_state & REQ_BUS_ON);
> +               if (!ret)
>                         irq_ack |= CORE_PWRCTL_BUS_SUCCESS;
>                 else
>                         irq_ack |= CORE_PWRCTL_BUS_FAIL;
> --
> Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc., is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
>