diff options
Diffstat (limited to 'sound/soc/sh/rcar/ctu.c')
| -rw-r--r-- | sound/soc/sh/rcar/ctu.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/ctu.c b/sound/soc/sh/rcar/ctu.c index a10d0f7b73fa..784515afefaf 100644 --- a/sound/soc/sh/rcar/ctu.c +++ b/sound/soc/sh/rcar/ctu.c @@ -14,6 +14,7 @@ struct rsnd_ctu { struct rsnd_mod mod; + int channels; }; #define rsnd_ctu_nr(priv) ((priv)->ctu_nr) @@ -23,6 +24,9 @@ struct rsnd_ctu { ((pos) = (struct rsnd_ctu *)(priv)->ctu + i); \ i++) +#define rsnd_mod_to_ctu(_mod) \ + container_of((_mod), struct rsnd_ctu, mod) + #define rsnd_ctu_get(priv, id) ((struct rsnd_ctu *)(priv->ctu) + id) static void rsnd_ctu_activation(struct rsnd_mod *mod) @@ -37,6 +41,13 @@ static void rsnd_ctu_halt(struct rsnd_mod *mod) rsnd_mod_write(mod, CTU_SWRSR, 0); } +int rsnd_ctu_converted_channel(struct rsnd_mod *mod) +{ + struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod); + + return ctu->channels; +} + static int rsnd_ctu_probe_(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct rsnd_priv *priv) @@ -116,11 +127,49 @@ static int rsnd_ctu_quit(struct rsnd_mod *mod, return 0; } +static int rsnd_ctu_hw_params(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *fe_params) +{ + struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod); + struct snd_soc_pcm_runtime *fe = substream->private_data; + + /* + * CTU assumes that it is used under DPCM if user want to use + * channel transfer. Then, CTU should be FE. + * And then, this function will be called *after* BE settings. + * this means, each BE already has fixuped hw_params. + * see + * dpcm_fe_dai_hw_params() + * dpcm_be_dai_hw_params() + */ + ctu->channels = 0; + if (fe->dai_link->dynamic) { + struct rsnd_priv *priv = rsnd_mod_to_priv(mod); + struct device *dev = rsnd_priv_to_dev(priv); + struct snd_soc_dpcm *dpcm; + struct snd_pcm_hw_params *be_params; + int stream = substream->stream; + + list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { + be_params = &dpcm->hw_params; + if (params_channels(fe_params) != params_channels(be_params)) + ctu->channels = params_channels(be_params); + } + + dev_dbg(dev, "CTU convert channels %d\n", ctu->channels); + } + + return 0; +} + static struct rsnd_mod_ops rsnd_ctu_ops = { .name = CTU_NAME, .probe = rsnd_ctu_probe_, .init = rsnd_ctu_init, .quit = rsnd_ctu_quit, + .hw_params = rsnd_ctu_hw_params, }; struct rsnd_mod *rsnd_ctu_mod_get(struct rsnd_priv *priv, int id) |