Messages in this thread Patch in this message |  | | | Date | Fri, 20 Feb 2009 20:33:19 +0300 | | From | Anton Vorontsov <> | | Subject | [PATCH 06/13] 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> --- drivers/mmc/host/sdhci.c | 2 ++ 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 782fb58..d668625 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1202,6 +1202,8 @@ 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 b10920d..051fef5 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -219,6 +219,8 @@ struct sdhci_host { #define SDHCI_QUIRK_NO_BUSY_IRQ (1<<15) /* Controller has unreliable card detection */ #define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<16) +/* Controller reports inverted write-protect state */ +#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<17) int irq; /* Device IRQ */ void __iomem * ioaddr; /* Mapped address */ -- 1.5.6.5
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