From: Kyungmin Park <kmpark@infradead.org>
To: linux-mmc@vger.kernel.org, akpm@linux-foundation.org
Subject: [PATCH] SDHCI: add no hi-speed bit quirk support
Date: Sat, 05 Jun 2010 13:50:09 +0900 [thread overview]
Message-ID: <20100605045009.GA25452@july> (raw)
Some SDHCI controllr like s5pc110 doesn't have HISPD bit at HOSTCTL register.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c6d1bd8..cba08ce 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1164,7 +1164,8 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
else
ctrl &= ~SDHCI_CTRL_4BITBUS;
- if (ios->timing == MMC_TIMING_SD_HS)
+ if (ios->timing == MMC_TIMING_SD_HS &&
+ !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT))
ctrl |= SDHCI_CTRL_HISPD;
else
ctrl &= ~SDHCI_CTRL_HISPD;
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index c846813..a78152d 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -240,6 +240,8 @@ struct sdhci_host {
#define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25)
/* Controller cannot support End Attribute in NOP ADMA descriptor */
#define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26)
+/* Controller doesn't have HISPD bit field in HI-SPEED SD card */
+#define SDHCI_QUIRK_NO_HISPD_BIT (1<<27)
int irq; /* Device IRQ */
void __iomem * ioaddr; /* Mapped address */
next reply other threads:[~2010-06-05 4:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-05 4:50 Kyungmin Park [this message]
[not found] <1275647794-30634-1-git-send-email-kgene.kim@samsung.com>
[not found] ` <1275647794-30634-2-git-send-email-kgene.kim@samsung.com>
[not found] ` <AANLkTinpth-JO7pIOWXbnuUWXM3xQ1OnFKkfESwi0cP3@mail.gmail.com>
2010-06-07 7:58 ` [PATCH] SDHCI: add no hi-speed bit quirk support Kukjin Kim
-- strict thread matches above, loose matches on Subject: below --
2010-06-07 8:02 Kukjin Kim
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