From: Jaehoon Chung <jh80.chung@samsung.com>
Date: Thu, 20 Sep 2012 20:31:55 +0000 (+0000)
Subject: mmc: sdhci: add the DMA select for SDMA
X-Git-Tag: v2013.01-rc1~91^2~4
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=804c7f422169212e92530e1ddaf74bf1ca9ebfa1;p=kernel%2Fu-boot.git

mmc: sdhci: add the DMA select for SDMA

In host-control register, DMA select bit field is present.
BUt in sdhci.c, didn't select for DMA.
if set CONFIG_MMC_SDMA, we need to set SDMA-select bit.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
---

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 9329874..15b4686 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -82,6 +82,13 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data,
 				unsigned int start_addr)
 {
 	unsigned int stat, rdy, mask, timeout, block = 0;
+#ifdef CONFIG_MMC_SDMA
+	unsigned char ctrl;
+	ctrl = sdhci_readl(host, SDHCI_HOST_CONTROL);
+	ctrl &= ~SDHCI_CTRL_DMA_MASK;
+	ctrl |= SDHCI_CTRL_SDMA;
+	sdhci_writel(host, ctrl, SDHCI_HOST_CONTROL);
+#endif
 
 	timeout = 1000000;
 	rdy = SDHCI_INT_SPACE_AVAIL | SDHCI_INT_DATA_AVAIL;