[PATCH v2 10/27] MCI: dw-mmc: convert to streaming DMA ops

[Lucas Stach]

Move to the common streaming DMA ops in order to get rid of
the direct usage of the ARM MMU functions for the cache
maintenance.

Signed-off-by: Lucas Stach <dev at lynxeye.de>
---
 drivers/mci/Kconfig  |  2 +-
 drivers/mci/dw_mmc.c | 24 ++++++++++++------------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/mci/Kconfig b/drivers/mci/Kconfig
index dbcc38d..a5cf2fe 100644
--- a/drivers/mci/Kconfig
+++ b/drivers/mci/Kconfig
@@ -36,7 +36,7 @@ comment "--- MCI host drivers ---"
 
 config MCI_DW
 	bool "Synopsys DesignWare Memory Card Interface"
-	depends on ARM
+	depends on HAS_DMA
 	help
 	  This selects support for the Synopsys DesignWare Mobile Storage IP
 	  block, this provides host support for SD and MMC interfaces, in both
diff --git a/drivers/mci/dw_mmc.c b/drivers/mci/dw_mmc.c
index 0ec37b6..ac940e8 100644
--- a/drivers/mci/dw_mmc.c
+++ b/drivers/mci/dw_mmc.c
@@ -29,7 +29,6 @@
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <asm-generic/errno.h>
-#include <asm/mmu.h>
 
 #define DWMCI_CTRL		0x000
 #define	DWMCI_PWREN		0x004
@@ -282,7 +281,6 @@ dwmci_cmd(struct mci_host *mci, struct mci_cmd *cmd, struct mci_data *data)
 	uint64_t start;
 	int ret;
 	unsigned int num_bytes = 0;
-	const void *writebuf = NULL;
 
 	start = get_time_ns();
 	while (1) {
@@ -300,12 +298,12 @@ dwmci_cmd(struct mci_host *mci, struct mci_cmd *cmd, struct mci_data *data)
 	if (data) {
 		num_bytes = data->blocks * data->blocksize;
 
-		if (data->flags & MMC_DATA_WRITE) {
-			dma_flush_range((unsigned long)data->src,
-				(unsigned long)(data->src + data->blocks * 512));
-
-			writebuf = data->src;
-		}
+		if (data->flags & MMC_DATA_WRITE)
+			dma_sync_single_for_device((unsigned long)data->src,
+						   num_bytes, DMA_TO_DEVICE);
+		else
+			dma_sync_single_for_device((unsigned long)data->dest,
+						   num_bytes, DMA_FROM_DEVICE);
 
 		ret = dwmci_prepare_data(host, data);
 		if (ret)
@@ -389,10 +387,12 @@ dwmci_cmd(struct mci_host *mci, struct mci_cmd *cmd, struct mci_data *data)
 		ctrl &= ~(DWMCI_DMA_EN);
 		dwmci_writel(host, DWMCI_CTRL, ctrl);
 
-		if (data->flags & MMC_DATA_READ) {
-			dma_inv_range((unsigned long)data->dest,
-					(unsigned long)(data->dest + data->blocks * 512));
-		}
+		if (data->flags & MMC_DATA_WRITE)
+			dma_sync_single_for_cpu((unsigned long)data->src,
+						num_bytes, DMA_TO_DEVICE);
+		else
+			dma_sync_single_for_cpu((unsigned long)data->dest,
+						num_bytes, DMA_FROM_DEVICE);
 	}
 
 	udelay(100);
-- 
2.1.0