diff options
| author | Gary King <gking@nvidia.com> | 2009-12-07 19:20:38 -0800 |
|---|---|---|
| committer | Gary King <gking@nvidia.com> | 2009-12-08 13:52:49 -0800 |
| commit | 43179bd75fa0a0bfe1f4a4c9f73bacc795d63190 (patch) | |
| tree | 455160aa7f339ebd98fcc028f2932db6af7f7884 /drivers/mmc | |
| parent | ee565dd759da88ba98ad0b874c7d47de7515003d (diff) | |
sdhci: add ENABLE_INTERRUPT_AT_BLOCK_GAP quirk
some controllers need to have INTERRUPT_AT_BLOCK_GAP enabled to detect
card interrupts in SDIO mode
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 9 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 2 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 245d3cfab2a9..6179b358a390 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1130,6 +1130,15 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) writel(ier, host->ioaddr + SDHCI_INT_ENABLE); writel(ier, host->ioaddr + SDHCI_SIGNAL_ENABLE); + if (host->quirks & SDHCI_QUIRK_ENABLE_INTERRUPT_AT_BLOCK_GAP) { + u8 gap_ctrl = readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL); + if (enable) + gap_ctrl |= 0x8; + else + gap_ctrl &= ~0x8; + writeb(gap_ctrl, host->ioaddr + SDHCI_BLOCK_GAP_CONTROL); + } + out: mmiowb(); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 99d05bd4ff1f..5b23b3de5810 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -212,6 +212,8 @@ struct sdhci_host { #define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14) /* Controller write protect bit is broken. Assume no write protection */ #define SDHCI_QUIRK_BROKEN_WRITE_PROTECT (1<<15) +/* Controller needs INTERRUPT_AT_BLOCK_GAP enabled to detect card interrupts */ +#define SDHCI_QUIRK_ENABLE_INTERRUPT_AT_BLOCK_GAP (1<<16) int irq; /* Device IRQ */ void __iomem * ioaddr; /* Mapped address */ |