diff options
| author |   Haibo Chen <haibo.chen@nxp.com> | 2020-05-27 10:39:35 +0800 |
|---|---|---|
| committer |   Ulf Hansson <ulf.hansson@linaro.org> | 2020-05-29 12:38:00 +0200 |
| commit | f61404626113080863c904a459576ba0c03a49ba (patch) | |
| tree | a9062a0802f2cd5364b372639a6f0b327b0b5946 /drivers/mmc | |
| parent | mmc: mmci_sdmmc: fix DMA API warning max segment size (diff) | |
| download | wireguard-linux-f61404626113080863c904a459576ba0c03a49ba.tar.xz wireguard-linux-f61404626113080863c904a459576ba0c03a49ba.zip | |
mmc: host: sdhci-esdhc-imx: add wakeup feature for GPIO CD pin
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>
Link: https://lore.kernel.org/r/1590547175-15070-1-git-send-email-haibo.chen@nxp.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 17 |
1 files 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 |