ASoC: fsl_asrc_dma: get codec or cpu dai from backend

With audio graph card, original cpu dai is changed to codec device in
backend, so if cpu dai is dummy device in backend, get the codec dai
device, which is the real hardware device connected.

The specific case is ASRC->SAI->AMIX->CODEC.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://patch.msgid.link/20250319033504.2898605-1-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c
index f501f47242fb0b88a4885c2be8274451fc7c97da..1bba48318e2ddf16f06a771b1b2b3f8bd4ebb980 100644 (file)
--- a/sound/soc/fsl/fsl_asrc_dma.c
+++ b/sound/soc/fsl/fsl_asrc_dma.c
@@ -156,11 +156,24 @@ static int fsl_asrc_dma_hw_params(struct snd_soc_component *component,
        for_each_dpcm_be(rtd, stream, dpcm) {
                struct snd_soc_pcm_runtime *be = dpcm->be;
                struct snd_pcm_substream *substream_be;
-               struct snd_soc_dai *dai = snd_soc_rtd_to_cpu(be, 0);
+               struct snd_soc_dai *dai_cpu = snd_soc_rtd_to_cpu(be, 0);
+               struct snd_soc_dai *dai_codec = snd_soc_rtd_to_codec(be, 0);
+               struct snd_soc_dai *dai;
 
                if (dpcm->fe != rtd)
                        continue;
 
+               /*
+                * With audio graph card, original cpu dai is changed to codec
+                * device in backend, so if cpu dai is dummy device in backend,
+                * get the codec dai device, which is the real hardware device
+                * connected.
+                */
+               if (!snd_soc_dai_is_dummy(dai_cpu))
+                       dai = dai_cpu;
+               else
+                       dai = dai_codec;
+
                substream_be = snd_soc_dpcm_get_substream(be, stream);
                dma_params_be = snd_soc_dai_get_dma_data(dai, substream_be);
                dev_be = dai->dev;