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Commit fe007c02 authored by Heiko Stübner's avatar Heiko Stübner Committed by Chris Ball
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mmc: sdhci-s3c: fix missing clock for gpio card-detect 



2abeb5c5 ("Add clk_(enable/disable) in runtime suspend/resume")
added the capability to stop the clocks when the device is runtime
suspended, but forgot to handle the case of the card-detect using
an external gpio.

Therefore in the case that runtime-pm is enabled, start the io-clock
when a card is inserted and stop it again once it is removed.

Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 0aa55c23

drivers/mmc/host/sdhci-s3c.c

+7 −0
Original line number Diff line number Diff line
@@ -373,18 +373,25 @@ static struct sdhci_ops sdhci_s3c_ops = { 
static void sdhci_s3c_notify_change(struct platform_device *dev, int state)

{

	struct sdhci_host *host = platform_get_drvdata(dev);

	struct sdhci_s3c *sc = sdhci_priv(host);

	unsigned long flags;



	if (host) {

		spin_lock_irqsave(&host->lock, flags);

		if (state) {

			dev_dbg(&dev->dev, "card inserted.\n");

#ifdef CONFIG_PM_RUNTIME

			clk_prepare_enable(sc->clk_io);

#endif

			host->flags &= ~SDHCI_DEVICE_DEAD;

			host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;

		} else {

			dev_dbg(&dev->dev, "card removed.\n");

			host->flags |= SDHCI_DEVICE_DEAD;

			host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;

#ifdef CONFIG_PM_RUNTIME

			clk_disable_unprepare(sc->clk_io);

#endif

		}

		tasklet_schedule(&host->card_tasklet);

		spin_unlock_irqrestore(&host->lock, flags);