diff options
| author | Balaji T K <balajitk@ti.com> | 2014-05-29 08:28:02 (GMT) |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-07-09 09:26:04 (GMT) |
| commit | 5a52b08b05b01732e338aab7283b3ce4987d71fb (patch) | |
| tree | 94de7b8c724b0692f4381158557be0bff3b99c04 /drivers/mmc/host | |
| parent | bb0635f0b4d2bad44d315344527cfa2cd91f0f4f (diff) | |
| download | linux-5a52b08b05b01732e338aab7283b3ce4987d71fb.tar.xz | |
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/mmc/host')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index ad3a2ac..b12a288 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: |