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SubjectApplied "ASoC: meson: axg-card: add basic codec-to-codec link support" to the asoc tree
The patch

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

has been applied to the asoc tree at for-5.3

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tree (usually sometime in the next 24 hours) and sent to Linus during
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From 0a8f1117a6803398d361e7bd76fef59c636f143b Mon Sep 17 00:00:00 2001
From: Jerome Brunet <>
Date: Wed, 15 May 2019 15:18:57 +0200
Subject: [PATCH] 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 <>
Tested-by: Neil Armstrong <>
Tested-by: Kevin Hilman <>
Signed-off-by: Mark Brown <>
sound/soc/meson/axg-card.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/sound/soc/meson/axg-card.c b/sound/soc/meson/axg-card.c
index 5c8deee8d512..db0a7fc18928 100644
--- 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;
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