diff options
| author | Heiko Stübner <heiko@sntech.de> | 2012-11-18 19:50:05 +0100 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-12-06 19:54:33 +0100 |
| commit | fe007c02f9659f5c0ae6f3ceaf45076df92cc88e (patch) | |
| tree | b874b12eb1d26a7dd0837e0b69fb5b41bcffbba4 | |
| parent | mmc: sdhci-s3c: fix the card detection in runtime-pm (diff) | |
| download | linux-fe007c02f9659f5c0ae6f3ceaf45076df92cc88e.tar.xz linux-fe007c02f9659f5c0ae6f3ceaf45076df92cc88e.zip | |
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 <heiko@sntech.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | drivers/mmc/host/sdhci-s3c.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index a54dd5d7a5f9..c9ec725884e5 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); |