Support multiple endpoints on SGTL5000 codec port when used in of_graph context.
This patch allows to share the codec port between two CPU DAIs.
Example:
Custom STM32MP157C board uses SGTL5000 audio codec. This codec is connected to two serial audio interfaces, which are configured either as rx or tx.
From AsoC point of view the topolgy is the following:
// 2 CPU DAIs (SAI2A/B), 1 Codec (SGTL5000) Playback: CPU-A-DAI(slave) -> (master)CODEC-DAI/port0 Record: CPU-B-DAI(slave) <- (master)CODEC-DAI/port0
In the DT two endpoints have to be associated to the codec port: sgtl5000_port: port { sgtl5000_tx_endpoint: endpoint@0 { remote-endpoint = <&sai2a_endpoint>; }; sgtl5000_rx_endpoint: endpoint@1 { remote-endpoint = <&sai2b_endpoint>; }; };
However, when the audio graph card parses the codec nodes, it expects to find DAI interface indexes matching the endpoints indexes.
The current patch forces the use of DAI id 0 for both endpoints, which allows to share the codec DAI between the two CPU DAIs for playback and capture streams respectively.
Signed-off-by: Marek Vasut marex@denx.de Cc: Mark Brown broonie@kernel.org --- NOTE: This is the same as commit ad6bb3067c4d ("ASoC: cs42l51: add multi endpoint support") --- sound/soc/codecs/sgtl5000.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index aa1f9637d8950..93da6b58c97df 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -1513,6 +1513,13 @@ static int sgtl5000_probe(struct snd_soc_component *component) return ret; }
+static int sgtl5000_of_xlate_dai_id(struct snd_soc_component *component, + struct device_node *endpoint) +{ + /* return dai id 0, whatever the endpoint index */ + return 0; +} + static const struct snd_soc_component_driver sgtl5000_driver = { .probe = sgtl5000_probe, .set_bias_level = sgtl5000_set_bias_level, @@ -1522,6 +1529,7 @@ static const struct snd_soc_component_driver sgtl5000_driver = { .num_dapm_widgets = ARRAY_SIZE(sgtl5000_dapm_widgets), .dapm_routes = sgtl5000_dapm_routes, .num_dapm_routes = ARRAY_SIZE(sgtl5000_dapm_routes), + .of_xlate_dai_id = sgtl5000_of_xlate_dai_id, .suspend_bias_off = 1, .idle_bias_on = 1, .use_pmdown_time = 1,