ASoC: meson: axg-card: add basic codec-to-codec link support

Add basic support for codec-to-codec link in the axg sound card. The cpu side of these links is expected to properly set the hw_params and format of the link. ATM, only the tohdmitx glue is supported but others (like the internal DAC glue) should follow. Signed-off-by: Jerome Brunet <[email protected]> Tested-by: Neil Armstrong <[email protected]> Tested-by: Kevin Hilman <[email protected]> Signed-off-by: Mark Brown <[email protected]>
Rezzonics · May 16, 2019 · 0a8f111 · 0a8f111
1 parent e35f5ad
commit 0a8f111
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/sound/soc/meson/axg-card.c b/sound/soc/meson/axg-card.c
@@ -29,6 +29,18 @@ struct axg_dai_link_tdm_data {
 	struct axg_dai_link_tdm_mask *codec_masks;
 };
 
+/*
+ * Base params for the codec to codec links
+ * Those will be over-written by the CPU side of the link
+ */
+static const struct snd_soc_pcm_stream codec_params = {
+	.formats = SNDRV_PCM_FMTBIT_S24_LE,
+	.rate_min = 5525,
+	.rate_max = 192000,
+	.channels_min = 1,
+	.channels_max = 8,
+};
+
 #define PREFIX "amlogic,"
 
 static int axg_card_reallocate_links(struct axg_card *priv,
@@ -517,6 +529,11 @@ static int axg_card_cpu_is_tdm_iface(struct device_node *np)
 	return of_device_is_compatible(np, PREFIX "axg-tdm-iface");
 }
 
+static int axg_card_cpu_is_codec(struct device_node *np)
+{
+	return of_device_is_compatible(np, PREFIX "g12a-tohdmitx");
+}
+
 static int axg_card_add_link(struct snd_soc_card *card, struct device_node *np,
 			     int *index)
 {
@@ -540,6 +557,8 @@ static int axg_card_add_link(struct snd_soc_card *card, struct device_node *np,
 
 	if (axg_card_cpu_is_tdm_iface(dai_link->cpu_of_node))
 		ret = axg_card_parse_tdm(card, np, index);
+	else if (axg_card_cpu_is_codec(dai_link->cpu_of_node))
+		dai_link->params = &codec_params;
 
 	return ret;
 }