mmc: sdhci-esdhc-imx: Enable support for system wakeup for SDIO

Enable support for system wakeup, by setting the wakeup capability for the
slot corresponding to the SDIO card. Users need to enable the wakeup
through the sysfs interface.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://lore.kernel.org/r/1623326486-25275-1-git-send-email-haibo.chen@nxp.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 7336ae74913773c9bb3299479b7127994d33f78a..72c0bf0c1887507a7db1b263ad13fae0d59a1823 100644 (file)
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -1620,6 +1620,14 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
        if (err)
                goto disable_ahb_clk;
 
+       /*
+        * Setup the wakeup capability here, let user to decide
+        * whether need to enable this wakeup through sysfs interface.
+        */
+       if ((host->mmc->pm_caps & MMC_PM_KEEP_POWER) &&
+                       (host->mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ))
+               device_set_wakeup_capable(&pdev->dev, true);
+
        pm_runtime_set_active(&pdev->dev);
        pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
        pm_runtime_use_autosuspend(&pdev->dev);