After the recent introduction of mmc_get_dma_dir next step is to
factor out the typical usage of dma_(un)map_sg to the core.
Several host drivers use dma_(un)map_sg with these parameters:
data->sg, data->sg_len, mmc_get_dma_dir(data)
Therefore factor this out to the core and introduce
mmc_dma_(un)map_sg.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
---
include/linux/mmc/host.h | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 21385ac0..8d28a600 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -17,7 +17,7 @@
#include <linux/mmc/core.h>
#include <linux/mmc/card.h>
#include <linux/mmc/pm.h>
-#include <linux/dma-direction.h>
+#include <linux/dma-mapping.h>
struct mmc_ios {
unsigned int clock; /* clock rate */
@@ -505,6 +505,16 @@ static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
}
+static inline int mmc_dma_map_sg(struct device *dev, struct mmc_data *data)
+{
+ return dma_map_sg(dev, data->sg, data->sg_len, mmc_get_dma_dir(data));
+}
+
+static inline void mmc_dma_unmap_sg(struct device *dev, struct mmc_data *data)
+{
+ dma_unmap_sg(dev, data->sg, data->sg_len, mmc_get_dma_dir(data));
+}
+
int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error);
int mmc_abort_tuning(struct mmc_host *host, u32 opcode);
--
2.12.1
--
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