linux-kernel - [PATCH 5.18 012/141] ASoC: Intel: cirrus-common: fix incorrect channel mapping

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Date:   Mon, 20 Jun 2022 14:49:10 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, xliu <xiang.liu@...rus.com>,
        Brent Lu <brent.lu@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 012/141] ASoC: Intel: cirrus-common: fix incorrect channel mapping

From: xliu <xiang.liu@...rus.com>

[ Upstream commit d69a155555c9d57463b788c400f6b452d976bacd ]

The default mapping of ASPRX1 (DAC source) is slot 0. Change the slot
mapping of right amplifiers (WR and TR) to slot 1 to receive right
channel data. Also update the ACPI instance ID mapping according to HW
configuration.

Signed-off-by: xliu <xiang.liu@...rus.com>
Signed-off-by: Brent Lu <brent.lu@...el.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Link: https://lore.kernel.org/r/20220602051922.1232457-1-brent.lu@intel.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/intel/boards/sof_cirrus_common.c | 40 +++++++++++++++++++---
 1 file changed, 36 insertions(+), 4 deletions(-)

diff --git a/sound/soc/intel/boards/sof_cirrus_common.c b/sound/soc/intel/boards/sof_cirrus_common.c
index e71d74ec1b0b..f4192df962d6 100644
--- a/sound/soc/intel/boards/sof_cirrus_common.c
+++ b/sound/soc/intel/boards/sof_cirrus_common.c
@@ -54,22 +54,29 @@ static struct snd_soc_dai_link_component cs35l41_components[] = {
 	},
 };
 
+/*
+ * Mapping between ACPI instance id and speaker position.
+ *
+ * Four speakers:
+ *         0: Tweeter left, 1: Woofer left
+ *         2: Tweeter right, 3: Woofer right
+ */
 static struct snd_soc_codec_conf cs35l41_codec_conf[] = {
 	{
 		.dlc = COMP_CODEC_CONF(CS35L41_DEV0_NAME),
-		.name_prefix = "WL",
+		.name_prefix = "TL",
 	},
 	{
 		.dlc = COMP_CODEC_CONF(CS35L41_DEV1_NAME),
-		.name_prefix = "WR",
+		.name_prefix = "WL",
 	},
 	{
 		.dlc = COMP_CODEC_CONF(CS35L41_DEV2_NAME),
-		.name_prefix = "TL",
+		.name_prefix = "TR",
 	},
 	{
 		.dlc = COMP_CODEC_CONF(CS35L41_DEV3_NAME),
-		.name_prefix = "TR",
+		.name_prefix = "WR",
 	},
 };
 
@@ -101,6 +108,21 @@ static int cs35l41_init(struct snd_soc_pcm_runtime *rtd)
 	return ret;
 }
 
+/*
+ * Channel map:
+ *
+ * TL/WL: ASPRX1 on slot 0, ASPRX2 on slot 1 (default)
+ * TR/WR: ASPRX1 on slot 1, ASPRX2 on slot 0
+ */
+static const struct {
+	unsigned int rx[2];
+} cs35l41_channel_map[] = {
+	{.rx = {0, 1}}, /* TL */
+	{.rx = {0, 1}}, /* WL */
+	{.rx = {1, 0}}, /* TR */
+	{.rx = {1, 0}}, /* WR */
+};
+
 static int cs35l41_hw_params(struct snd_pcm_substream *substream,
 			     struct snd_pcm_hw_params *params)
 {
@@ -134,6 +156,16 @@ static int cs35l41_hw_params(struct snd_pcm_substream *substream,
 				ret);
 			return ret;
 		}
+
+		/* setup channel map */
+		ret = snd_soc_dai_set_channel_map(codec_dai, 0, NULL,
+						  ARRAY_SIZE(cs35l41_channel_map[i].rx),
+						  (unsigned int *)cs35l41_channel_map[i].rx);
+		if (ret < 0) {
+			dev_err(codec_dai->dev, "fail to set channel map, ret %d\n",
+				ret);
+			return ret;
+		}
 	}
 
 	return 0;
-- 
2.35.1