[MMC] Add mmc_detect_change() delay support for PXAMCI driver
Allow PXA platforms to pass an appropriate delay value to the
PXA MCI driver for delaying detection changes.
Signed-Off-By: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/mmc/pxamci.c b/drivers/mmc/pxamci.c
index 5223cd3..b53af57 100644
--- a/drivers/mmc/pxamci.c
+++ b/drivers/mmc/pxamci.c
@@ -423,7 +423,9 @@
static irqreturn_t pxamci_detect_irq(int irq, void *devid, struct pt_regs *regs)
{
- mmc_detect_change(devid, 0);
+ struct pxamci_host *host = mmc_priv(devid);
+
+ mmc_detect_change(devid, host->pdata->detect_delay);
return IRQ_HANDLED;
}
diff --git a/include/asm-arm/arch-pxa/mmc.h b/include/asm-arm/arch-pxa/mmc.h
index 9718063..88c17dd 100644
--- a/include/asm-arm/arch-pxa/mmc.h
+++ b/include/asm-arm/arch-pxa/mmc.h
@@ -9,6 +9,7 @@
struct pxamci_platform_data {
unsigned int ocr_mask; /* available voltages */
+ unsigned long detect_delay; /* delay in jiffies before detecting cards after interrupt */
int (*init)(struct device *, irqreturn_t (*)(int, void *, struct pt_regs *), void *);
int (*get_ro)(struct device *);
void (*setpower)(struct device *, unsigned int);