WM8524 is a stereo DAC. Add support for this codec in imx-card ASoC
machine driver.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
---
changes in v2
- fix build warnings reported by kernel test robot
- add imx_aif_shutdown callback in which setting sysclk to 0

 sound/soc/fsl/imx-card.c | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/sound/soc/fsl/imx-card.c b/sound/soc/fsl/imx-card.c
index ea5dbb54b584..28699d7b75ca 100644
--- a/sound/soc/fsl/imx-card.c
+++ b/sound/soc/fsl/imx-card.c
@@ -26,6 +26,7 @@ enum codec_type {
 	CODEC_AK4497,
 	CODEC_AK5552,
 	CODEC_CS42888,
+	CODEC_WM8524,
 };
 
 /*
@@ -196,6 +197,13 @@ static struct imx_akcodec_tdm_fs_mul cs42888_tdm_fs_mul[] = {
 	{ .min = 256,	.max = 256,	.mul = 256 },
 };
 
+static struct imx_akcodec_fs_mul wm8524_fs_mul[] = {
+	{ .rmin = 8000,   .rmax = 32000,  .wmin = 256,  .wmax = 1152, },
+	{ .rmin = 44100,  .rmax = 48000,  .wmin = 256,  .wmax = 768, },
+	{ .rmin = 88200,  .rmax = 96000,  .wmin = 128,  .wmax = 384, },
+	{ .rmin = 176400, .rmax = 192000, .wmin = 128,  .wmax = 192, },
+};
+
 static const u32 akcodec_rates[] = {
 	8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
 	96000, 176400, 192000, 352800, 384000, 705600, 768000,
@@ -229,6 +237,10 @@ static const u32 cs42888_tdm_channels[] = {
 	1, 2, 3, 4, 5, 6, 7, 8,
 };
 
+static const u32 wm8524_channels[] = {
+	2,
+};
+
 static bool format_is_dsd(struct snd_pcm_hw_params *params)
 {
 	snd_pcm_format_t format = params_format(params);
@@ -261,6 +273,7 @@ static bool codec_is_akcodec(unsigned int type)
 	case CODEC_AK5558:
 	case CODEC_AK5552:
 	case CODEC_CS42888:
+	case CODEC_WM8524:
 		return true;
 	default:
 		break;
@@ -477,9 +490,24 @@ static int imx_aif_startup(struct snd_pcm_substream *substream)
 	return ret;
 }
 
+static void imx_aif_shutdown(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
+	struct snd_soc_dai *cpu_dai;
+	struct snd_soc_dai *codec_dai;
+	int i;
+
+	for_each_rtd_cpu_dais(rtd, i, cpu_dai)
+		snd_soc_dai_set_sysclk(cpu_dai, 0, 0, SND_SOC_CLOCK_OUT);
+
+	for_each_rtd_codec_dais(rtd, i, codec_dai)
+		snd_soc_dai_set_sysclk(codec_dai, 0, 0, SND_SOC_CLOCK_IN);
+}
+
 static const struct snd_soc_ops imx_aif_ops = {
 	.hw_params = imx_aif_hw_params,
 	.startup = imx_aif_startup,
+	.shutdown = imx_aif_shutdown,
 };
 
 static const struct snd_soc_ops imx_aif_ops_be = {
@@ -632,6 +660,8 @@ static int imx_card_parse_of(struct imx_card_data *data)
 				plat_data->type = CODEC_AK5552;
 			else if (!strcmp(link->codecs->dai_name, "cs42888"))
 				plat_data->type = CODEC_CS42888;
+			else if (!strcmp(link->codecs->dai_name, "wm8524-hifi"))
+				plat_data->type = CODEC_WM8524;
 
 		} else {
 			link->codecs	 = &snd_soc_dummy_dlc;
@@ -805,6 +835,10 @@ static int imx_card_probe(struct platform_device *pdev)
 		data->dapm_routes[1].sink = "CPU-Capture";
 		data->dapm_routes[1].source = "Capture";
 		break;
+	case CODEC_WM8524:
+		data->dapm_routes[0].sink = "Playback";
+		data->dapm_routes[0].source = "CPU-Playback";
+		break;
 	default:
 		break;
 	}
@@ -854,6 +888,12 @@ static int imx_card_probe(struct platform_device *pdev)
 			plat_data->support_tdm_channels = cs42888_tdm_channels;
 			plat_data->num_tdm_channels = ARRAY_SIZE(cs42888_tdm_channels);
 			break;
+		case CODEC_WM8524:
+			plat_data->fs_mul = wm8524_fs_mul;
+			plat_data->num_fs_mul = ARRAY_SIZE(wm8524_fs_mul);
+			plat_data->support_channels = wm8524_channels;
+			plat_data->num_channels = ARRAY_SIZE(wm8524_channels);
+			break;
 		default:
 			break;
 		}
-- 
2.47.1

On Wed, 23 Jul 2025 16:37:25 +0900, Chancel Liu wrote:
> WM8524 is a stereo DAC. Add support for this codec in imx-card ASoC
> machine driver.
> 
> 

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: imx-card: Add WM8524 support
      commit: 2260bc6ea8bd57aec92cbda770de9cc95232f64d

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark