The device busy check method is different between
single and double planes.
It will always return "busy" without this patch
if channel used as double plane.
Reviewed-by: Max Filippov <max.filip...@cogentembedded.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto...@renesas.com>
---
drivers/dma/sh/rcar-hpbdma.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/sh/rcar-hpbdma.c b/drivers/dma/sh/rcar-hpbdma.c
index 19af32d..3083d90 100644
--- a/drivers/dma/sh/rcar-hpbdma.c
+++ b/drivers/dma/sh/rcar-hpbdma.c
@@ -60,6 +60,7 @@
#define HPB_DMAE_DSTPR_DMSTP BIT(0)
/* DMA status register (DSTSR) bits */
+#define HPB_DMAE_DSTSR_DQSTS BIT(2)
#define HPB_DMAE_DSTSR_DMSTS BIT(0)
/* DMA common registers */
@@ -388,7 +389,10 @@ static bool hpb_dmae_channel_busy(struct shdma_chan *schan)
struct hpb_dmae_chan *chan = to_chan(schan);
u32 dstsr = ch_reg_read(chan, HPB_DMAE_DSTSR);
- return (dstsr & HPB_DMAE_DSTSR_DMSTS) == HPB_DMAE_DSTSR_DMSTS;
+ if (chan->xfer_mode == XFER_DOUBLE)
+ return dstsr & HPB_DMAE_DSTSR_DQSTS;
+ else
+ return dstsr & HPB_DMAE_DSTSR_DMSTS;
}
static int
--
1.7.9.5
--
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