diff options
author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2018-11-06 05:21:46 +0000 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2018-11-06 17:40:38 +0000 |
commit | f69f452243e4e16d7a3d0a14e14126b10933d545 (patch) | |
tree | b42ec0b7619209e0f750c2e8528f16337b7cb6eb /sound/soc/sh/rcar/core.c | |
parent | cf704dc83fd6600758e98ac71769eaeb00dfc770 (diff) |
ASoC: rsnd: add TDM Split mode support
This patch adds TDM Split mode support. rsnd driver is assuming
audio-graph-scu-card is used for Sound Card.
This is very simple sample DT settings to use it.
sound_card: sound {
compatible = "audio-graph-scu-card";
...
convert-channels = <8>; /* TDM Split */
dais = <&rsnd_port0 /* playback ch1/ch2 */
&rsnd_port1 /* playback ch3/ch4 */
&rsnd_port2 /* playback ch5/ch6 */
&rsnd_port3 /* playback ch7/ch8 */
>;
};
audio-codec {
...
port {
codec_0: endpoint@1 {
remote-endpoint = <&rsnd_ep0>;
};
codec_1: endpoint@2 {
remote-endpoint = <&rsnd_ep1>;
};
codec_2: endpoint@3 {
remote-endpoint = <&rsnd_ep2>;
};
codec_3: endpoint@4 {
remote-endpoint = <&rsnd_ep3>;
};
};
};
&rcar_sound {
...
ports {
rsnd_port0: port@0 {
rsnd_ep0: endpoint {
remote-endpoint = <&codec_0>;
...
playback = <&ssiu30 &ssi3>;
};
};
rsnd_port1: port@1 {
rsnd_ep1: endpoint {
remote-endpoint = <&codec_1>;
...
playback = <&ssiu31 &ssi3>;
};
};
rsnd_port2: port@2 {
rsnd_ep2: endpoint {
remote-endpoint = <&codec_2>;
...
playback = <&ssiu32 &ssi3>;
};
};
rsnd_port3: port@3 {
rsnd_ep3: endpoint {
remote-endpoint = <&codec_3>;
...
playback = <&ssiu33 &ssi3>;
};
};
};
};
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sh/rcar/core.c')
-rw-r--r-- | sound/soc/sh/rcar/core.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c index ff621615a924..12f559e0463f 100644 --- a/sound/soc/sh/rcar/core.c +++ b/sound/soc/sh/rcar/core.c @@ -271,6 +271,19 @@ int rsnd_runtime_channel_after_ctu_with_params(struct rsnd_dai_stream *io, if (ctu_mod) { u32 converted_chan = rsnd_io_converted_chan(io); + /* + * !! Note !! + * + * converted_chan will be used for CTU, + * or TDM Split mode. + * User shouldn't use CTU with TDM Split mode. + */ + if (rsnd_runtime_is_tdm_split(io)) { + struct device *dev = rsnd_priv_to_dev(rsnd_io_to_priv(io)); + + dev_err(dev, "CTU and TDM Split should be used\n"); + } + if (converted_chan) return converted_chan; } @@ -313,6 +326,11 @@ int rsnd_runtime_is_tdm(struct rsnd_dai_stream *io) return rsnd_runtime_channel_for_ssi(io) >= 6; } +int rsnd_runtime_is_tdm_split(struct rsnd_dai_stream *io) +{ + return !!rsnd_flags_has(io, RSND_STREAM_TDM_SPLIT); +} + /* * ADINR function */ @@ -790,6 +808,7 @@ static int rsnd_soc_set_dai_tdm_slot(struct snd_soc_dai *dai, switch (slots) { case 2: + /* TDM Split Mode */ case 6: case 8: /* TDM Extend Mode */ @@ -1010,6 +1029,7 @@ static void rsnd_parse_connect_graph(struct rsnd_priv *priv, struct device_node *endpoint) { struct device *dev = rsnd_priv_to_dev(priv); + struct device_node *remote_port = of_graph_get_remote_port(endpoint); struct device_node *remote_node = of_graph_get_remote_port_parent(endpoint); if (!rsnd_io_to_mod_ssi(io)) @@ -1026,6 +1046,15 @@ static void rsnd_parse_connect_graph(struct rsnd_priv *priv, rsnd_flags_set(io, RSND_STREAM_HDMI1); dev_dbg(dev, "%s connected to HDMI1\n", io->name); } + + /* + * This driver assumes that it is TDM Split mode + * if remote node has multi endpoint + */ + if (of_get_child_count(remote_port) > 1) { + rsnd_flags_set(io, RSND_STREAM_TDM_SPLIT); + dev_dbg(dev, "%s is part of TDM Split\n", io->name); + } } void rsnd_parse_connect_common(struct rsnd_dai *rdai, |