SDHCI: add no hi-speed bit quirk support

PATCH Superseded Kyungmin Park 1 participant 1 message Jun 5, 2010

Subsystems (2)

MMC, SD and SDIO Secure digital host controller interface (SDHCI) driver

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Kyungmin Park

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2010-06-05 04:50 UTC #0 lore raw

PATCH 1/1 SDHCI: add no hi-speed bit quirk support

Some SDHCI controllr like s5pc110 doesn't have HISPD bit at HOSTCTL register.

Signed-off-by Kyungmin Park <[email protected]>

---

drivers/mmc/host/sdhci.c +2 -1

index c6d1bd8..cba08ce 100644
@@ -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;

drivers/mmc/host/sdhci.h +2 -0

index c846813..a78152d 100644
@@ -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 */