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| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-03-17 00:13:54 +0300 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2009-03-24 21:30:09 +0100 |
| commit | c5075a1089e808d8f471ce21b02810cc98ab2692 (patch) | |
| tree | 25780a5db4a56e51a736c45bfb2cc8fe132fbd11 /drivers/mmc/host | |
| parent | 68d1fb7e229c6f95be4fbbe3eb46b24e41184924 (diff) | |
| download | linux-c5075a1089e808d8f471ce21b02810cc98ab2692.tar.gz | |
sdhci: Add support for hosts reporting inverted write-protect state
This patch adds SDHCI_QUIRK_INVERTED_WRITE_PROTECT quirk. When
specified, the sdhci driver will invert WP state.
p.s. Actually, the quirk is more board-specific than
controller-specific.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 2 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index fc7cb489bdb7..c814220d214e 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1149,6 +1149,8 @@ static int sdhci_get_ro(struct mmc_host *mmc) spin_unlock_irqrestore(&host->lock, flags); + if (host->quirks & SDHCI_QUIRK_INVERTED_WRITE_PROTECT) + return !!(present & SDHCI_WRITE_PROTECT); return !(present & SDHCI_WRITE_PROTECT); } diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 968d713950f1..6980f2725b85 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -216,6 +216,8 @@ struct sdhci_host { #define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14) /* Controller has unreliable card detection */ #define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15) +/* Controller reports inverted write-protect state */ +#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16) int irq; /* Device IRQ */ void __iomem * ioaddr; /* Mapped address */ |