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Message-ID: <20090122020026.GD11492@oksana.dev.rtsoft.ru>
Date: Thu, 22 Jan 2009 05:00:26 +0300
From: Anton Vorontsov <avorontsov@...mvista.com>
To: Pierre Ossman <drzeus-sdhci@...eus.cx>
Cc: Ben Dooks <ben-linux@...ff.org>, Arnd Bergmann <arnd@...db.de>,
Kumar Gala <galak@...nel.crashing.org>,
Liu Dave <DaveLiu@...escale.com>,
Xie Xiaobo <X.Xie@...escale.com>,
Konjin Lai <Konjin.Lai@...escale.com>,
Joe D'Abbraccio <Joe.D'abbraccio@...escale.com>,
sdhci-devel@...t.drzeus.cx, linux-kernel@...r.kernel.org,
linuxppc-dev@...abs.org
Subject: [PATCH 04/10] 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@...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 5a7a584..63809f5 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1114,6 +1114,8 @@ 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 f357722..9cd2b78 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -215,6 +215,8 @@ 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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