[RFC] SDHCI: add quirk for data timeout value when card busy.

Commit Message

Jaehoon Chung Nov. 30, 2010, 6:13 a.m. UTC

None

Patch

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 782c0ee..3b93d97 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -655,8 +655,12 @@  static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
 
 	WARN_ON(host->data);
 
-	if (data == NULL)
+	if (data == NULL) {
+		if ((host->quirks & SDHCI_QUIRK_SET_DATA_TIMEOUT_VAL) &&
+				(host->cmd->flags & MMC_RSP_BUSY))
+			sdhci_writel(host, 0xE, SDHCI_TIMEOUT_CONTROL);
 		return;
+	}
 
 	/* Sanity checks */
 	BUG_ON(data->blksz * data->blocks > 524288);
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h
index 1fdc673..315ff49 100644
--- a/include/linux/mmc/sdhci.h
+++ b/include/linux/mmc/sdhci.h
@@ -83,7 +83,8 @@  struct sdhci_host {
 #define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12		(1<<28)
 /* Controller doesn't have HISPD bit field in HI-SPEED SD card */
 #define SDHCI_QUIRK_NO_HISPD_BIT			(1<<29)
-
+/* Controller need set data timeout value when card is busy */
+#define SDHCI_QUIRK_SET_DATA_TIMEOUT_VAL		(1<<30)
 	int irq;		/* Device IRQ */
 	void __iomem *ioaddr;	/* Mapped address */