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@xxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
---
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,
--
2.24.1
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