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authorBalaji T K <balajitk@ti.com>2014-05-29 10:28:02 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2014-07-09 11:26:04 +0200
commit5a52b08b05b01732e338aab7283b3ce4987d71fb (patch)
tree94de7b8c724b0692f4381158557be0bff3b99c04 /drivers
parentbb0635f0b4d2bad44d315344527cfa2cd91f0f4f (diff)
mmc: omap_hsmmc: enable wakeup event for sdio OMAP4
To detect sdio irqs properly without spurious events, OMAP4 needs IWE in CON and CTPL, CLKEXTFREE in HCTL to be set Tested-by: Andreas Fenkart <afenkart@gmail.com> Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/host/omap_hsmmc.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index ad3a2acd3664..b12a2882ec74 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -94,7 +94,10 @@
#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
@@ -687,6 +690,9 @@ 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);
@@ -1684,19 +1690,23 @@ 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);
/*
@@ -1746,6 +1756,8 @@ 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:

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