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

This patch adds HDMI audio output support to the MT8173 RT5650 machine
driver.

Signed-off-by: PC Liao <pc.liao@mediatek.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt b/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt
index f250fc7..29dce2a 100644 (file)
--- a/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt
+++ b/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt
@@ -1,8 +1,9 @@
-MT8173 with RT5650 CODECS
+MT8173 with RT5650 CODECS and HDMI via I2S
 
 Required properties:
 - compatible : "mediatek,mt8173-rt5650"
 - mediatek,audio-codec: the phandles of rt5650 codecs
+                        and of the hdmi encoder node
 - mediatek,platform: the phandle of MT8173 ASoC platform
 
 Optional subnodes:
@@ -20,7 +21,7 @@ Example:
 
        sound {
                compatible = "mediatek,mt8173-rt5650";
-               mediatek,audio-codec = <&rt5650>;
+               mediatek,audio-codec = <&rt5650 &hdmi0>;
                mediatek,platform = <&afe>;
                mediatek,mclk = <0>;
                codec-capture {

diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig
index 2fbe543..05cf809 100644 (file)
--- a/sound/soc/mediatek/Kconfig
+++ b/sound/soc/mediatek/Kconfig
@@ -46,6 +46,7 @@ config SND_SOC_MT8173_RT5650
        tristate "ASoC Audio driver for MT8173 with RT5650 codec"
        depends on SND_SOC_MT8173 && I2C
        select SND_SOC_RT5645
+       select SND_SOC_HDMI_CODEC
        help
          This adds ASoC driver for Mediatek MT8173 boards
          with the RT5650 audio codec.

diff --git a/sound/soc/mediatek/mt8173/mt8173-rt5650.c b/sound/soc/mediatek/mt8173/mt8173-rt5650.c
index d478976..ba65f41 100644 (file)
--- a/sound/soc/mediatek/mt8173/mt8173-rt5650.c
+++ b/sound/soc/mediatek/mt8173/mt8173-rt5650.c
@@ -169,7 +169,9 @@ static struct snd_soc_dai_link_component mt8173_rt5650_codecs[] = {
 enum {
        DAI_LINK_PLAYBACK,
        DAI_LINK_CAPTURE,
+       DAI_LINK_HDMI,
        DAI_LINK_CODEC_I2S,
+       DAI_LINK_HDMI_I2S,
 };
 
 /* Digital audio interface glue - connects codec <---> CPU */
@@ -195,6 +197,16 @@ static struct snd_soc_dai_link mt8173_rt5650_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] = {
                .name = "Codec",
@@ -210,6 +222,13 @@ static struct snd_soc_dai_link mt8173_rt5650_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,
+       },
 };
 
 static struct snd_soc_card mt8173_rt5650_card = {
@@ -284,6 +303,13 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
                }
        }
 
+       mt8173_rt5650_dais[DAI_LINK_HDMI_I2S].codec_of_node =
+               of_parse_phandle(pdev->dev.of_node, "mediatek,audio-codec", 1);
+       if (!mt8173_rt5650_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);