ASoC: rsnd: SSI + DMA can select BUSIF
Sound data needs to be sent to R-Car sound SSI when playback.
But, there are 2 interfaces for it.
1st is SSITDR/SSIRDR which are mapped on SSI.
2nd is SSIn_BUSIF which are mapped on SSIU.
2nd SSIn_BUSIF is used when DMA transfer,
and it is always used if sound data came from via SRC.
But, we can use it when SSI+DMA case too.
(Current driver is assuming 1st SSITDR/SSIRDR for it)
2nd SSIn_BUSIF can be used as FIFO.
This is very helpful/useful for SSI+DMA.
But DMA address / DMA ID are not same between 1st/2nd cases.
This patch care about these settings.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index 200eda0..4d39505 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -106,18 +106,17 @@
/*
* Gen1/Gen2 common functions
*/
-int rsnd_src_ssi_mode_init(struct rsnd_mod *ssi_mod,
- struct rsnd_dai *rdai)
+int rsnd_src_ssiu_start(struct rsnd_mod *ssi_mod,
+ struct rsnd_dai *rdai,
+ int use_busif)
{
- struct rsnd_dai_stream *io = rsnd_mod_to_io(ssi_mod);
- struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
int ssi_id = rsnd_mod_id(ssi_mod);
/*
* SSI_MODE0
*/
rsnd_mod_bset(ssi_mod, SSI_MODE0, (1 << ssi_id),
- src_mod ? 0 : (1 << ssi_id));
+ !use_busif << ssi_id);
/*
* SSI_MODE1
@@ -143,6 +142,29 @@
0x2 << shift : 0x1 << shift);
}
+ /*
+ * DMA settings for SSIU
+ */
+ if (use_busif) {
+ rsnd_mod_write(ssi_mod, SSI_BUSIF_ADINR,
+ rsnd_get_adinr(ssi_mod));
+ rsnd_mod_write(ssi_mod, SSI_BUSIF_MODE, 1);
+ rsnd_mod_write(ssi_mod, SSI_CTRL, 0x1);
+ }
+
+ return 0;
+}
+
+int rsnd_src_ssiu_stop(struct rsnd_mod *ssi_mod,
+ struct rsnd_dai *rdai,
+ int use_busif)
+{
+ /*
+ * DMA settings for SSIU
+ */
+ if (use_busif)
+ rsnd_mod_write(ssi_mod, SSI_CTRL, 0);
+
return 0;
}
@@ -467,9 +489,6 @@
if (ret < 0)
return ret;
- rsnd_mod_write(mod, SSI_BUSIF_ADINR, rsnd_get_adinr(mod));
- rsnd_mod_write(mod, SSI_BUSIF_MODE, 1);
-
rsnd_mod_write(mod, SRC_SRCCR, 0x00011110);
rsnd_mod_write(mod, SRC_BSDSR, 0x01800000);
@@ -554,7 +573,6 @@
rsnd_dma_start(rsnd_mod_to_dma(&src->mod));
- rsnd_mod_write(mod, SSI_CTRL, 0x1);
rsnd_mod_write(mod, SRC_CTRL, val);
return rsnd_src_start(mod, rdai);
@@ -565,7 +583,6 @@
{
struct rsnd_src *src = rsnd_mod_to_src(mod);
- rsnd_mod_write(mod, SSI_CTRL, 0);
rsnd_mod_write(mod, SRC_CTRL, 0);
rsnd_dma_stop(rsnd_mod_to_dma(&src->mod));