From c5075a1089e808d8f471ce21b02810cc98ab2692 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Tue, 17 Mar 2009 00:13:54 +0300 Subject: 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 Signed-off-by: Pierre Ossman --- drivers/mmc/host/sdhci.c | 2 ++ drivers/mmc/host/sdhci.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'drivers/mmc') 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 */ -- cgit v1.2.3