From: Jiada Wang <jiada_wang@xxxxxxxxxx>
Currently ssi driver only request dma channel for SSI_0,
which is used to transfer data to/from busif0.
But in GEN3 busif1 to busif7 also maybe used, dedicated dma channels
are requested for data transfer through these busif.
Signed-off-by: Jiada Wang <jiada_wang@xxxxxxxxxx>
---
sound/soc/sh/rcar/ssi.c | 28 +++++++++++++++++++++++-----
1 file changed, 23 insertions(+), 5 deletions(-)
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 3adcc4f778f7..992aeac09e76 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -76,6 +76,8 @@
#define SSI_NAME "ssi"
+#define SSI_DMA_NAME_SIZE 10
+
struct rsnd_ssi {
struct rsnd_mod mod;
@@ -938,12 +940,28 @@ static struct dma_chan *rsnd_ssi_dma_req(struct rsnd_dai_stream *io,
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
int is_play = rsnd_io_is_play(io);
- char *name;
+ char name[SSI_DMA_NAME_SIZE];
- if (rsnd_ssi_use_busif(io))
- name = is_play ? "rxu" : "txu";
- else
- name = is_play ? "rx" : "tx";
+ if (rsnd_ssi_use_busif(io)) {
+ if (is_play)
+ snprintf(name, SSI_DMA_NAME_SIZE, "rxu");
+ else
+ snprintf(name, SSI_DMA_NAME_SIZE, "txu");
+
+ if (rsnd_is_gen3(priv)) {
+ /*
+ * Gen3 supports to use all available BUSIF
+ */
+ int busif = rsnd_ssi_get_busif(io);
+
+ snprintf(name, SSI_DMA_NAME_SIZE, "%s%d", name, busif);
+ }
+ } else {
+ if (is_play)
+ snprintf(name, SSI_DMA_NAME_SIZE, "rx");
+ else
+ snprintf(name, SSI_DMA_NAME_SIZE, "tx");
+ }
return rsnd_dma_request_channel(rsnd_ssi_of_node(priv),
mod, name);
--
2.17.0
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