From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com
Current rsnd supports multi SSI (maximum 4 SSI for 8ch), and, it should determine whether using each SSI or not in runtime. All SSIs are not used even if there are 4 SSI in case of stereo.
Current driver setups un-used SSI in such case. It is no problem, but not needed. This patch judges it.
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- sound/soc/sh/rcar/ssi.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c index 32f1f5f..0979db8 100644 --- a/sound/soc/sh/rcar/ssi.c +++ b/sound/soc/sh/rcar/ssi.c @@ -96,6 +96,8 @@ struct rsnd_ssi { #define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io)) #define rsnd_ssi_is_multi_slave(mod, io) \ (rsnd_ssi_multi_slaves(io) & (1 << rsnd_mod_id(mod))) +#define rsnd_ssi_is_run_mods(mod, io) \ + (rsnd_ssi_run_mods(io) & (1 << rsnd_mod_id(mod)))
int rsnd_ssi_use_busif(struct rsnd_dai_stream *io) { @@ -166,6 +168,16 @@ static u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io) return mask; }
+static u32 rsnd_ssi_run_mods(struct rsnd_dai_stream *io) +{ + struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); + struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io); + + return rsnd_ssi_multi_slaves_runtime(io) | + 1 << rsnd_mod_id(ssi_mod) | + 1 << rsnd_mod_id(ssi_parent_mod); +} + u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io) { struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); @@ -348,6 +360,9 @@ static int rsnd_ssi_init(struct rsnd_mod *mod, struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); int ret;
+ if (!rsnd_ssi_is_run_mods(mod, io)) + return 0; + ssi->usrcnt++;
rsnd_mod_power_on(mod); @@ -374,6 +389,9 @@ static int rsnd_ssi_quit(struct rsnd_mod *mod, struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); struct device *dev = rsnd_priv_to_dev(priv);
+ if (!rsnd_ssi_is_run_mods(mod, io)) + return 0; + if (!ssi->usrcnt) { dev_err(dev, "%s[%d] usrcnt error\n", rsnd_mod_name(mod), rsnd_mod_id(mod)); @@ -422,6 +440,9 @@ static int rsnd_ssi_start(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct rsnd_priv *priv) { + if (!rsnd_ssi_is_run_mods(mod, io)) + return 0; + /* * EN will be set via SSIU :: SSI_CONTROL * if Multi channel mode @@ -441,6 +462,9 @@ static int rsnd_ssi_stop(struct rsnd_mod *mod, struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); u32 cr;
+ if (!rsnd_ssi_is_run_mods(mod, io)) + return 0; + /* * don't stop if not last user * see also @@ -483,6 +507,9 @@ static int rsnd_ssi_irq(struct rsnd_mod *mod, if (rsnd_ssi_is_parent(mod, io)) return 0;
+ if (!rsnd_ssi_is_run_mods(mod, io)) + return 0; + if (enable) val = rsnd_ssi_is_dma_mode(mod) ? 0x0e000000 : 0x0f000000;