From: Balaji T K <balajitk@xxxxxx>
To detect sdio irqs properly without spurious events,
OMAP4 needs IWE in CON and CTPL, CLKEXTFREE in HCTL to be set
Signed-off-by: Balaji T K <balajitk@xxxxxx>
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index f43a69e..f76462d 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -120,7 +120,10 @@ static void apply_clk_hack(struct device *dev)
#define BCE (1 << 1)
#define FOUR_BIT (1 << 1)
#define HSPE (1 << 2)
+#define IWE (1 << 24)
#define DDR (1 << 19)
+#define CLKEXTFREE (1 << 16)
+#define CTPL (1 << 11)
#define DW8 (1 << 5)
#define OD 0x1
#define STAT_CLEAR 0xFFFFFFFF
@@ -713,6 +716,9 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
capa = VS18;
}
+ if (host->mmc->caps & MMC_CAP_SDIO_IRQ)
+ hctl |= IWE;
+
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL) | hctl);
@@ -1709,19 +1715,23 @@ static void omap_hsmmc_init_card(struct mmc_host *mmc, struct mmc_card *card)
static void omap_hsmmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct omap_hsmmc_host *host = mmc_priv(mmc);
- u32 irq_mask;
+ u32 irq_mask, con;
unsigned long flags;
spin_lock_irqsave(&host->irq_lock, flags);
+ con = OMAP_HSMMC_READ(host->base, CON);
irq_mask = OMAP_HSMMC_READ(host->base, ISE);
if (enable) {
host->flags |= HSMMC_SDIO_IRQ_ENABLED;
irq_mask |= CIRQ_EN;
+ con |= CTPL | CLKEXTFREE;
} else {
host->flags &= ~HSMMC_SDIO_IRQ_ENABLED;
irq_mask &= ~CIRQ_EN;
+ con &= ~(CTPL | CLKEXTFREE);
}
+ OMAP_HSMMC_WRITE(host->base, CON, con);
OMAP_HSMMC_WRITE(host->base, IE, irq_mask);
/*
@@ -1773,6 +1783,8 @@ static int omap_hsmmc_configure_wake_irq(struct omap_hsmmc_host *host)
goto err;
}
+ OMAP_HSMMC_WRITE(host->base, HCTL,
+ OMAP_HSMMC_READ(host->base, HCTL) | IWE);
return 0;
err:
--
1.7.10.4
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