linux-kernel - [PATCH v1] ASoC: tas2552: Add TX path for capturing AUDIO-OUT data

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Date: Sat, 18 May 2024 11:35:15 +0800
From: Shenghao Ding <shenghao-ding@...com>
To: <broonie@...nel.org>
CC: <andriy.shevchenko@...ux.intel.com>, <i-salazar@...com>,
        <pierre-louis.bossart@...ux.intel.com>, <13916275206@....com>,
        <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
        <liam.r.girdwood@...el.com>, <kevin-lu@...com>, <tiwai@...e.de>,
        <baojun.xu@...com>, <soyer@....hu>, <Baojun.Xu@....com>,
        Shenghao Ding
	<shenghao-ding@...com>
Subject: [PATCH v1] ASoC: tas2552: Add TX path for capturing AUDIO-OUT data

TAS2552 is a Smartamp with I/V sense data, add TX path
to support capturing I/V data.

Fixes: 38803ce7b53b ("ASoC: codecs: tas*: merge .digital_mute() into .mute_stream()")
Signed-off-by: Shenghao Ding <shenghao-ding@...com>

---
v1:
 - Changed the copyright year to 2024 in the related files.
 - Add tx device in tas2552_dai.
 - Add Stream Domain Widgets for I/V capture
 - Add INPUT widget
 - Add I/V capture route
---
 sound/soc/codecs/tas2552.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
index 40f5f27e74c0..9fd3642b98b3 100644
--- a/sound/soc/codecs/tas2552.c
+++ b/sound/soc/codecs/tas2552.c
@@ -2,7 +2,8 @@
 /*
  * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier
  *
- * Copyright (C) 2014 Texas Instruments Incorporated -  https://www.ti.com
+ * Copyright (C) 2014 - 2024 Texas Instruments Incorporated -
+ *	https://www.ti.com
  *
  * Author: Dan Murphy <dmurphy@...com>
  */
@@ -119,12 +120,14 @@ static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] =
 			 &tas2552_input_mux_control),
 
 	SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("ASI OUT", "DAC Capture", 0, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0),
 	SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0),
 	SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0),
 	SND_SOC_DAPM_POST("Post Event", tas2552_post_event),
 
-	SND_SOC_DAPM_OUTPUT("OUT")
+	SND_SOC_DAPM_OUTPUT("OUT"),
+	SND_SOC_DAPM_INPUT("DMIC")
 };
 
 static const struct snd_soc_dapm_route tas2552_audio_map[] = {
@@ -134,6 +137,7 @@ static const struct snd_soc_dapm_route tas2552_audio_map[] = {
 	{"ClassD", NULL, "Input selection"},
 	{"OUT", NULL, "ClassD"},
 	{"ClassD", NULL, "PLL"},
+	{"ASI OUT", NULL, "DMIC"}
 };
 
 #ifdef CONFIG_PM
@@ -538,6 +542,13 @@ static struct snd_soc_dai_driver tas2552_dai[] = {
 			.rates = SNDRV_PCM_RATE_8000_192000,
 			.formats = TAS2552_FORMATS,
 		},
+		.capture = {
+			.stream_name = "Capture",
+			.channels_min = 2,
+			.channels_max = 2,
+			.rates = SNDRV_PCM_RATE_8000_192000,
+			.formats = TAS2552_FORMATS,
+		},
 		.ops = &tas2552_speaker_dai_ops,
 	},
 };
-- 
2.34.1