linux-kernel - [RFC, PATCH 2/2] ASoC: qcom: sm8250: Add TERTIARY_TDM_RX

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Date:   Mon, 11 Dec 2023 17:53:57 +0800
From:   Jianhua Lu <lujianhua000@...il.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Banajit Goswami <bgoswami@...cinc.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-sound@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jianhua Lu <lujianhua000@...il.com>
Subject: [RFC, PATCH 2/2] ASoC: qcom: sm8250: Add TERTIARY_TDM_RX_0 support

Add TERTIARY_TDM_RX_0 case to make speaker amplifiers working
on xiaomi-elish tablet.

Signed-off-by: Jianhua Lu <lujianhua000@...il.com>
---
 sound/soc/qcom/sm8250.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/sound/soc/qcom/sm8250.c b/sound/soc/qcom/sm8250.c
index f298167c2a23..00c89c073e72 100644
--- a/sound/soc/qcom/sm8250.c
+++ b/sound/soc/qcom/sm8250.c
@@ -16,6 +16,7 @@
 
 #define DRIVER_NAME		"sm8250"
 #define MI2S_BCLK_RATE		1536000
+#define TDM_BCLK_RATE		12288000
 
 struct sm8250_snd_data {
 	bool stream_prepared[AFE_PORT_MAX];
@@ -53,6 +54,7 @@ static int sm8250_snd_startup(struct snd_pcm_substream *substream)
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+	int ret, j;
 
 	switch (cpu_dai->id) {
 	case TERTIARY_MI2S_RX:
@@ -63,6 +65,23 @@ static int sm8250_snd_startup(struct snd_pcm_substream *substream)
 		snd_soc_dai_set_fmt(cpu_dai, fmt);
 		snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
 		break;
+	case TERTIARY_TDM_RX_0:
+		codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_DSP_A;
+		snd_soc_dai_set_sysclk(cpu_dai,
+			Q6AFE_LPASS_CLK_ID_TER_TDM_IBIT,
+			TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
+
+		for_each_rtd_codec_dais(rtd, j, codec_dai) {
+			ret = snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
+			snd_soc_dai_set_sysclk(codec_dai,
+				0,
+				TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
+			if (ret < 0) {
+				dev_err(rtd->dev, "TDM fmt err:%d\n", ret);
+				return ret;
+			}
+		}
+		break;
 	default:
 		break;
 	}
-- 
2.41.0