ASoC: rsnd: judge work SSI in runtime
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> Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -96,6 +96,8 @@ struct rsnd_ssi {
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#define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io))
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#define rsnd_ssi_is_multi_slave(mod, io) \
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(rsnd_ssi_multi_slaves(io) & (1 << rsnd_mod_id(mod)))
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#define rsnd_ssi_is_run_mods(mod, io) \
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(rsnd_ssi_run_mods(io) & (1 << rsnd_mod_id(mod)))
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int rsnd_ssi_use_busif(struct rsnd_dai_stream *io)
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{
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@ -166,6 +168,16 @@ static u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io)
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return mask;
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}
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static u32 rsnd_ssi_run_mods(struct rsnd_dai_stream *io)
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{
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struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io);
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struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io);
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return rsnd_ssi_multi_slaves_runtime(io) |
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1 << rsnd_mod_id(ssi_mod) |
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1 << rsnd_mod_id(ssi_parent_mod);
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}
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u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io)
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{
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struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
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@ -348,6 +360,9 @@ static int rsnd_ssi_init(struct rsnd_mod *mod,
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struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
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int ret;
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if (!rsnd_ssi_is_run_mods(mod, io))
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return 0;
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ssi->usrcnt++;
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rsnd_mod_power_on(mod);
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@ -374,6 +389,9 @@ static int rsnd_ssi_quit(struct rsnd_mod *mod,
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struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
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struct device *dev = rsnd_priv_to_dev(priv);
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if (!rsnd_ssi_is_run_mods(mod, io))
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return 0;
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if (!ssi->usrcnt) {
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dev_err(dev, "%s[%d] usrcnt error\n",
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rsnd_mod_name(mod), rsnd_mod_id(mod));
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@ -422,6 +440,9 @@ static int rsnd_ssi_start(struct rsnd_mod *mod,
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struct rsnd_dai_stream *io,
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struct rsnd_priv *priv)
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{
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if (!rsnd_ssi_is_run_mods(mod, io))
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return 0;
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/*
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* EN will be set via SSIU :: SSI_CONTROL
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* if Multi channel mode
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@ -441,6 +462,9 @@ static int rsnd_ssi_stop(struct rsnd_mod *mod,
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struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
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u32 cr;
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if (!rsnd_ssi_is_run_mods(mod, io))
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return 0;
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/*
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* don't stop if not last user
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* see also
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@ -483,6 +507,9 @@ static int rsnd_ssi_irq(struct rsnd_mod *mod,
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if (rsnd_ssi_is_parent(mod, io))
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return 0;
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if (!rsnd_ssi_is_run_mods(mod, io))
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return 0;
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if (enable)
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val = rsnd_ssi_is_dma_mode(mod) ? 0x0e000000 : 0x0f000000;
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