From fe007c02f9659f5c0ae6f3ceaf45076df92cc88e Mon Sep 17 00:00:00 2001 From: =?utf8?q?Heiko=20St=C3=BCbner?= Date: Sun, 18 Nov 2012 19:50:05 +0100 Subject: [PATCH] mmc: sdhci-s3c: fix missing clock for gpio card-detect 2abeb5c5ded2 ("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: Heiko Stuebner Signed-off-by: Chris Ball --- drivers/mmc/host/sdhci-s3c.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index a54dd5d..c9ec725 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -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); -- 2.7.4