Support multiple endpoints on TLV320AIC32x4 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 TLV320AIC32x4 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 (TLV320AIC32x4)
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:
tlv320aic32x4_port: port {
tlv320aic32x4_tx_endpoint: endpoint@0 {
remote-endpoint = <&sai2a_endpoint>;
};
tlv320aic32x4_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: Baojun Xu <baojun.xu@xxxxxx>
Cc: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
Cc: Christoph Niedermaier <cniedermaier@xxxxxxxxxxxxxxxxxx>
Cc: Jaroslav Kysela <perex@xxxxxxxx>
Cc: Kevin Lu <kevin-lu@xxxxxx>
Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
Cc: Marek Vasut <marex@xxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Cc: Shenghao Ding <shenghao-ding@xxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxxx>
Cc: alsa-devel@xxxxxxxxxxxxxxxx
Cc: kernel@xxxxxxxxxxxxxxxxxx
Cc: linux-sound@xxxxxxxxxxxxxxx
---
sound/soc/codecs/tlv320aic32x4.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c
index 5c0c81da06dba..54ea4bc58c276 100644
--- a/sound/soc/codecs/tlv320aic32x4.c
+++ b/sound/soc/codecs/tlv320aic32x4.c
@@ -1073,6 +1073,13 @@ static int aic32x4_component_probe(struct snd_soc_component *component)
return 0;
}
+static int aic32x4_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 soc_component_dev_aic32x4 = {
.probe = aic32x4_component_probe,
.set_bias_level = aic32x4_set_bias_level,
@@ -1082,6 +1089,7 @@ static const struct snd_soc_component_driver soc_component_dev_aic32x4 = {
.num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
.dapm_routes = aic32x4_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
+ .of_xlate_dai_id = aic32x4_of_xlate_dai_id,
.suspend_bias_off = 1,
.idle_bias_on = 1,
.use_pmdown_time = 1,
@@ -1203,6 +1211,7 @@ static const struct snd_soc_component_driver soc_component_dev_aic32x4_tas2505 =
.num_dapm_widgets = ARRAY_SIZE(aic32x4_tas2505_dapm_widgets),
.dapm_routes = aic32x4_tas2505_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(aic32x4_tas2505_dapm_routes),
+ .of_xlate_dai_id = aic32x4_of_xlate_dai_id,
.suspend_bias_off = 1,
.idle_bias_on = 1,
.use_pmdown_time = 1,
--
2.45.2
