Add function for determining DMA direction to core.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Reviewed-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
---
v2:
- no changes
v3:
- no changes
---
include/linux/mmc/host.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 83f1c4a9..21385ac0 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -17,6 +17,7 @@
#include <linux/mmc/core.h>
#include <linux/mmc/card.h>
#include <linux/mmc/pm.h>
+#include <linux/dma-direction.h>
struct mmc_ios {
unsigned int clock; /* clock rate */
@@ -499,6 +500,11 @@ static inline bool mmc_can_retune(struct mmc_host *host)
return host->can_retune == 1;
}
+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;
+}
+
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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