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sdhci: Add support for hosts reporting inverted write-protect state

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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>
This commit is contained in:
Anton Vorontsov 2009-03-17 00:13:54 +03:00 committed by Pierre Ossman
parent 68d1fb7e22
commit c5075a1089
2 changed files with 4 additions and 0 deletions
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2
drivers/mmc/host/sdhci.c
View File

@ -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);
}

2
drivers/mmc/host/sdhci.h
View File

@ -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 */