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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>
This commit is contained in:
Guennadi Liakhovetski 2012-12-04 16:51:36 +01:00 committed by Chris Ball
parent 9f1fb60a23
commit 451c89578e
1 changed files with 7 additions and 1 deletions
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8
drivers/mmc/core/slot-gpio.c
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@ -27,7 +27,13 @@ struct mmc_gpio {
static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id) static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id)
{ {
/* Schedule a card detection after a debounce timeout */ /* 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; return IRQ_HANDLED;
} }