mmc: extend the slot-gpio card-detection to use host's .card_event() method

The slot-gpio API provides a generic card-detection handler. To support a
wider range of hosts it has to call the host's card-event callback, if
implemented. Also increase the debounce interval to 200ms to match the
SDHCI driver.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c
index 08c6b3d..16a1c0b 100644 (file)
--- a/drivers/mmc/core/slot-gpio.c
+++ b/drivers/mmc/core/slot-gpio.c
@@ -27,7 +27,13 @@ struct mmc_gpio {
 static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id)
 {
        /* Schedule a card detection after a debounce timeout */
-       mmc_detect_change(dev_id, msecs_to_jiffies(100));
+       struct mmc_host *host = dev_id;
+
+       if (host->ops->card_event)
+               host->ops->card_event(host);
+
+       mmc_detect_change(host, msecs_to_jiffies(200));
+
        return IRQ_HANDLED;
 }