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Subject[PATCH v5] ASoC: mediatek: Add second I2S on mt8173-rt5650 machine driver
Date
This patch adds second I2S connection to rt5650 codec for capture path on
mt8173-rt5650 machine driver.

This patch depends on [1], because snd_soc_of_get_dai_name() fix the property
name "sound-dai". This patch needs to change name to use, so export
snd_soc_get_dai_name() which is included in snd_soc_of_get_dai_name().

[1] https://patchwork.kernel.org/patch/5671961/ ("ASoC: core: export
snd_soc_get_dai_name")

Signed-off-by: PC Liao <pc.liao@mediatek.com>
---
Changes since v4:
Change name from "sound-dai" to "capture-dai" to determine the capture path
---
.../devicetree/bindings/sound/mt8173-rt5650.txt | 6 +++
sound/soc/mediatek/mt8173-rt5650.c | 44 ++++++++++++++++++--
2 files changed, 47 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt b/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt
index fe5a5ef..802dd1b 100644
--- a/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt
+++ b/Documentation/devicetree/bindings/sound/mt8173-rt5650.txt
@@ -5,11 +5,17 @@ Required properties:
- mediatek,audio-codec: the phandles of rt5650 codecs
- mediatek,platform: the phandle of MT8173 ASoC platform

+Optional properties:
+- capture-dai: audio codec dai on capture path
+ <&rt5650 0> : Default setting. Connect rt5650 I2S1 for capture. (dai_name = rt5645-aif1)
+ <&rt5650 1> : Connect rt5650 I2S2 for capture. (dai_name = rt5645-aif2)
+
Example:

sound {
compatible = "mediatek,mt8173-rt5650";
mediatek,audio-codec = <&rt5650>;
mediatek,platform = <&afe>;
+ capture-dai = <&rt5650 1>;
};

diff --git a/sound/soc/mediatek/mt8173-rt5650.c b/sound/soc/mediatek/mt8173-rt5650.c
index bb09bb1..45dea22 100644
--- a/sound/soc/mediatek/mt8173-rt5650.c
+++ b/sound/soc/mediatek/mt8173-rt5650.c
@@ -85,12 +85,26 @@ static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime)
{
struct snd_soc_card *card = runtime->card;
struct snd_soc_codec *codec = runtime->codec_dais[0]->codec;
+ const char *codec_dai_capture = runtime->codec_dais[1]->name;
int ret;

rt5645_sel_asrc_clk_src(codec,
- RT5645_DA_STEREO_FILTER |
- RT5645_AD_STEREO_FILTER,
+ RT5645_DA_STEREO_FILTER,
RT5645_CLK_SEL_I2S1_ASRC);
+
+ if (!strcmp(codec_dai_capture, "rt5645-aif1")) {
+ rt5645_sel_asrc_clk_src(codec,
+ RT5645_AD_STEREO_FILTER,
+ RT5645_CLK_SEL_I2S1_ASRC);
+ } else if (!strcmp(codec_dai_capture, "rt5645-aif2")) {
+ rt5645_sel_asrc_clk_src(codec,
+ RT5645_AD_STEREO_FILTER,
+ RT5645_CLK_SEL_I2S2_ASRC);
+ } else {
+ dev_err(card->dev, "Can't get the right codec dai\n");
+ return -EINVAL;
+ }
+
/* enable jack detection */
ret = snd_soc_card_jack_new(card, "Headset Jack",
SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |
@@ -110,6 +124,11 @@ static int mt8173_rt5650_init(struct snd_soc_pcm_runtime *runtime)

static struct snd_soc_dai_link_component mt8173_rt5650_codecs[] = {
{
+ /* Playback */
+ .dai_name = "rt5645-aif1",
+ },
+ {
+ /* Capture */
.dai_name = "rt5645-aif1",
},
};
@@ -149,7 +168,7 @@ static struct snd_soc_dai_link mt8173_rt5650_dais[] = {
.cpu_dai_name = "I2S",
.no_pcm = 1,
.codecs = mt8173_rt5650_codecs,
- .num_codecs = 1,
+ .num_codecs = 2,
.init = mt8173_rt5650_init,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
@@ -177,6 +196,8 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &mt8173_rt5650_card;
struct device_node *platform_node;
+ const char *codec_dai_capture;
+ struct of_phandle_args args;
int i, ret;

platform_node = of_parse_phandle(pdev->dev.of_node,
@@ -199,6 +220,23 @@ static int mt8173_rt5650_dev_probe(struct platform_device *pdev)
"Property 'audio-codec' missing or invalid\n");
return -EINVAL;
}
+ mt8173_rt5650_codecs[1].of_node = mt8173_rt5650_codecs[0].of_node;
+
+ if (device_property_present(&pdev->dev, "capture-dai")) {
+ ret = of_parse_phandle_with_args(pdev->dev.of_node,
+ "capture-dai",
+ "#sound-dai-cells", 0, &args);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "%s capture-dai name fail %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ ret = snd_soc_get_dai_name(&args, &codec_dai_capture);
+ mt8173_rt5650_codecs[1].dai_name = codec_dai_capture;
+ }
+
card->dev = &pdev->dev;
platform_set_drvdata(pdev, card);

--
1.7.9.5
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