* [PATCH v2] mmc: host: sdhci-esdhc-imx: add wakeup feature for GPIO CD pin
@ 2020-05-27 2:39 haibo.chen
2020-05-28 10:14 ` Ulf Hansson
0 siblings, 1 reply; 2+ messages in thread
From: haibo.chen @ 2020-05-27 2:39 UTC (permalink / raw)
To: adrian.hunter, ulf.hansson, linux-mmc
Cc: linux-imx, haibo.chen, shawnguo, s.hauer, kernel, festevam, rjw,
linux-pm
From: Haibo Chen <haibo.chen@nxp.com>
When use the specific GPIO to detect the card insert/remove, we can
also add the GPIO as a wakeup source. When system suspend, insert or
remove the card can wakeup the system.
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
---
drivers/mmc/host/sdhci-esdhc-imx.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 5398af4824c3..5a27511438c8 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -1599,6 +1599,10 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
if (esdhc_is_usdhc(imx_data)) {
host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
host->mmc->caps |= MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR;
+
+ /* GPIO CD can be set as a wakeup source */
+ host->mmc->caps |= MMC_CAP_CD_WAKE;
+
if (!(imx_data->socdata->flags & ESDHC_FLAG_HS200))
host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
@@ -1734,8 +1738,14 @@ static int sdhci_esdhc_suspend(struct device *dev)
mmc_retune_needed(host->mmc);
ret = sdhci_suspend_host(host);
- if (!ret)
- return pinctrl_pm_select_sleep_state(dev);
+ if (ret)
+ return ret;
+
+ ret = pinctrl_pm_select_sleep_state(dev);
+ if (ret)
+ return ret;
+
+ ret = mmc_gpio_set_cd_wake(host->mmc, true);
return ret;
}
@@ -1759,6 +1769,9 @@ static int sdhci_esdhc_resume(struct device *dev)
if (host->mmc->caps2 & MMC_CAP2_CQE)
ret = cqhci_resume(host->mmc);
+ if (!ret)
+ ret = mmc_gpio_set_cd_wake(host->mmc, false);
+
return ret;
}
#endif
--
2.17.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] mmc: host: sdhci-esdhc-imx: add wakeup feature for GPIO CD pin
2020-05-27 2:39 [PATCH v2] mmc: host: sdhci-esdhc-imx: add wakeup feature for GPIO CD pin haibo.chen
@ 2020-05-28 10:14 ` Ulf Hansson
0 siblings, 0 replies; 2+ messages in thread
From: Ulf Hansson @ 2020-05-28 10:14 UTC (permalink / raw)
To: Haibo Chen
Cc: Adrian Hunter, linux-mmc, dl-linux-imx, Shawn Guo, Sascha Hauer,
Sascha Hauer, Fabio Estevam, Rafael J. Wysocki, Linux PM
On Wed, 27 May 2020 at 04:50, <haibo.chen@nxp.com> wrote:
>
> From: Haibo Chen <haibo.chen@nxp.com>
>
> When use the specific GPIO to detect the card insert/remove, we can
> also add the GPIO as a wakeup source. When system suspend, insert or
> remove the card can wakeup the system.
>
> Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Applied for next, thanks!
Kind regards
Uffe
> ---
> drivers/mmc/host/sdhci-esdhc-imx.c | 17 +++++++++++++++--
> 1 file changed, 15 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
> index 5398af4824c3..5a27511438c8 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -1599,6 +1599,10 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
> if (esdhc_is_usdhc(imx_data)) {
> host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
> host->mmc->caps |= MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR;
> +
> + /* GPIO CD can be set as a wakeup source */
> + host->mmc->caps |= MMC_CAP_CD_WAKE;
> +
> if (!(imx_data->socdata->flags & ESDHC_FLAG_HS200))
> host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
>
> @@ -1734,8 +1738,14 @@ static int sdhci_esdhc_suspend(struct device *dev)
> mmc_retune_needed(host->mmc);
>
> ret = sdhci_suspend_host(host);
> - if (!ret)
> - return pinctrl_pm_select_sleep_state(dev);
> + if (ret)
> + return ret;
> +
> + ret = pinctrl_pm_select_sleep_state(dev);
> + if (ret)
> + return ret;
> +
> + ret = mmc_gpio_set_cd_wake(host->mmc, true);
>
> return ret;
> }
> @@ -1759,6 +1769,9 @@ static int sdhci_esdhc_resume(struct device *dev)
> if (host->mmc->caps2 & MMC_CAP2_CQE)
> ret = cqhci_resume(host->mmc);
>
> + if (!ret)
> + ret = mmc_gpio_set_cd_wake(host->mmc, false);
> +
> return ret;
> }
> #endif
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2020-05-28 10:15 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-27 2:39 [PATCH v2] mmc: host: sdhci-esdhc-imx: add wakeup feature for GPIO CD pin haibo.chen
2020-05-28 10:14 ` Ulf Hansson
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.