[PATCH v2 4/5] ASoC: fsl_asrc: expose individual DAIs per conversion path
From: <hidden>
Date: 2026-07-23 02:19:51
Also in:
imx, linux-devicetree, linux-sound, linuxppc-dev, lkml
Subsystem:
freescale soc sound drivers, sound, sound - soc layer / dynamic audio power management (asoc), the rest · Maintainers:
Shengjiu Wang, Xiubo Li, Jaroslav Kysela, Takashi Iwai, Liam Girdwood, Mark Brown, Linus Torvalds
From: Shengjiu Wang <redacted> The i.MX ASRC hardware supports three independent conversion pairs (A, B, C). The driver previously registered a single DAI with generic stream names "ASRC-Playback" and "ASRC-Capture", which prevents multiple independent conversion paths from being used simultaneously. Replace the single fsl_asrc_dai instance with an array of three DAI drivers to allow up to three independent conversion paths to be active at the same time: asrc-0 -- ASRC-Playback / ASRC-Capture (backward compatible) asrc-1 -- ASRC1-Playback / ASRC1-Capture asrc-2 -- ASRC2-Playback / ASRC2-Capture asrc-0 retains the original generic stream names to preserve backward compatibility with existing machine drivers and board configurations. Each DAI retains the same channel, rate and format capabilities as the original. Update the devm_snd_soc_register_component() call to register all three DAIs. Signed-off-by: Shengjiu Wang <redacted> --- sound/soc/fsl/fsl_asrc.c | 89 +++++++++++++++++++++++++++++++--------- 1 file changed, 69 insertions(+), 20 deletions(-)
diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 986a2e26819a..4cb24b8de462 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c@@ -792,27 +792,76 @@ static const struct snd_soc_dai_ops fsl_asrc_dai_ops = { SNDRV_PCM_FMTBIT_S16_LE | \ SNDRV_PCM_FMTBIT_S24_3LE) -static struct snd_soc_dai_driver fsl_asrc_dai = { - .playback = { - .stream_name = "ASRC-Playback", - .channels_min = 1, - .channels_max = 10, - .rate_min = 5512, - .rate_max = 192000, - .rates = SNDRV_PCM_RATE_KNOT, - .formats = FSL_ASRC_FORMATS | - SNDRV_PCM_FMTBIT_S8, +static struct snd_soc_dai_driver fsl_asrc_dai[] = { + { + .name = "asrc-0", + .playback = { + .stream_name = "ASRC-Playback", + .channels_min = 1, + .channels_max = 10, + .rate_min = 5512, + .rate_max = 192000, + .rates = SNDRV_PCM_RATE_KNOT, + .formats = FSL_ASRC_FORMATS | + SNDRV_PCM_FMTBIT_S8, + }, + .capture = { + .stream_name = "ASRC-Capture", + .channels_min = 1, + .channels_max = 10, + .rate_min = 5512, + .rate_max = 192000, + .rates = SNDRV_PCM_RATE_KNOT, + .formats = FSL_ASRC_FORMATS, + }, + .ops = &fsl_asrc_dai_ops, + }, + { + .name = "asrc-1", + .playback = { + .stream_name = "ASRC1-Playback", + .channels_min = 1, + .channels_max = 10, + .rate_min = 5512, + .rate_max = 192000, + .rates = SNDRV_PCM_RATE_KNOT, + .formats = FSL_ASRC_FORMATS | + SNDRV_PCM_FMTBIT_S8, + }, + .capture = { + .stream_name = "ASRC1-Capture", + .channels_min = 1, + .channels_max = 10, + .rate_min = 5512, + .rate_max = 192000, + .rates = SNDRV_PCM_RATE_KNOT, + .formats = FSL_ASRC_FORMATS, + }, + .ops = &fsl_asrc_dai_ops, }, - .capture = { - .stream_name = "ASRC-Capture", - .channels_min = 1, - .channels_max = 10, - .rate_min = 5512, - .rate_max = 192000, - .rates = SNDRV_PCM_RATE_KNOT, - .formats = FSL_ASRC_FORMATS, + { + .name = "asrc-2", + .playback = { + .stream_name = "ASRC2-Playback", + .channels_min = 1, + .channels_max = 10, + .rate_min = 5512, + .rate_max = 192000, + .rates = SNDRV_PCM_RATE_KNOT, + .formats = FSL_ASRC_FORMATS | + SNDRV_PCM_FMTBIT_S8, + }, + .capture = { + .stream_name = "ASRC2-Capture", + .channels_min = 1, + .channels_max = 10, + .rate_min = 5512, + .rate_max = 192000, + .rates = SNDRV_PCM_RATE_KNOT, + .formats = FSL_ASRC_FORMATS, + }, + .ops = &fsl_asrc_dai_ops, }, - .ops = &fsl_asrc_dai_ops, }; static bool fsl_asrc_readable_reg(struct device *dev, unsigned int reg)
@@ -1393,7 +1442,7 @@ static int fsl_asrc_probe(struct platform_device *pdev) goto err_pm_get_sync; ret = devm_snd_soc_register_component(&pdev->dev, &fsl_asrc_component, - &fsl_asrc_dai, 1); + fsl_asrc_dai, ARRAY_SIZE(fsl_asrc_dai)); if (ret) { dev_err(&pdev->dev, "failed to register ASoC DAI\n"); goto err_pm_get_sync;
--
2.34.1