ASoC: mediatek: Add HDMI dai-links in the mt8173-rt5650-rt5676 machine driver

This creates pcmC0D2p for the HDMI playback in the same card.

Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 28 insertions, 0 deletions

diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig
index f7e789e97fbc..3abf51c07851 100644
--- a/sound/soc/mediatek/Kconfig
+++ b/sound/soc/mediatek/Kconfig
@@ -43,6 +43,7 @@ config SND_SOC_MT8173_RT5650_RT5676
         depends on SND_SOC_MEDIATEK && I2C
         select SND_SOC_RT5645
         select SND_SOC_RT5677
+        select SND_SOC_HDMI_CODEC
         help
           This adds ASoC driver for Mediatek MT8173 boards
           with the RT5650 and RT5676 codecs.
diff --git a/sound/soc/mediatek/mt8173-rt5650-rt5676.c b/sound/soc/mediatek/mt8173-rt5650-rt5676.c
index 5c4c58c69c51..bb593926c62d 100644
--- a/sound/soc/mediatek/mt8173-rt5650-rt5676.c
+++ b/sound/soc/mediatek/mt8173-rt5650-rt5676.c
@@ -134,7 +134,9 @@ static struct snd_soc_dai_link_component mt8173_rt5650_rt5676_codecs[] = {
 enum {
         DAI_LINK_PLAYBACK,
         DAI_LINK_CAPTURE,
+        DAI_LINK_HDMI,
         DAI_LINK_CODEC_I2S,
+        DAI_LINK_HDMI_I2S,
         DAI_LINK_INTERCODEC
 };
 
@@ -161,6 +163,16 @@ static struct snd_soc_dai_link mt8173_rt5650_rt5676_dais[] = {
                 .dynamic = 1,
                 .dpcm_capture = 1,
         },
+        [DAI_LINK_HDMI] = {
+                .name = "HDMI",
+                .stream_name = "HDMI PCM",
+                .cpu_dai_name = "HDMI",
+                .codec_name = "snd-soc-dummy",
+                .codec_dai_name = "snd-soc-dummy-dai",
+                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
+                .dynamic = 1,
+                .dpcm_playback = 1,
+        },
 
         /* Back End DAI links */
         [DAI_LINK_CODEC_I2S] = {
@@ -177,6 +189,13 @@ static struct snd_soc_dai_link mt8173_rt5650_rt5676_dais[] = {
                 .dpcm_playback = 1,
                 .dpcm_capture = 1,
         },
+        [DAI_LINK_HDMI_I2S] = {
+                .name = "HDMI BE",
+                .cpu_dai_name = "HDMIO",
+                .no_pcm = 1,
+                .codec_dai_name = "i2s-hifi",
+                .dpcm_playback = 1,
+        },
         /* rt5676 <-> rt5650 intercodec link: Sets rt5676 I2S2 as master */
         [DAI_LINK_INTERCODEC] = {
                 .name = "rt5650_rt5676 intercodec",
@@ -251,6 +270,14 @@ static int mt8173_rt5650_rt5676_dev_probe(struct platform_device *pdev)
         mt8173_rt5650_rt5676_dais[DAI_LINK_INTERCODEC].codec_of_node =
                 mt8173_rt5650_rt5676_codecs[1].of_node;
 
+        mt8173_rt5650_rt5676_dais[DAI_LINK_HDMI_I2S].codec_of_node =
+                of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 2);
+        if (!mt8173_rt5650_rt5676_dais[DAI_LINK_HDMI_I2S].codec_of_node) {
+                dev_err(&pdev->dev,
+                        "Property 'audio-codec' missing or invalid\n");
+                return -EINVAL;
+        }
+
         card->dev = &pdev->dev;
         platform_set_drvdata(pdev, card);