ASoC: qdsp6: q6apm-dai: unprepare stream if its already prepared

prepare callback can be called multiple times, so unprepare the stream
if its already prepared.

Without this DSP is not happy to setting the params on a already
prepared graph.

Fixes: 1e92c0f10faa ("ASoC: qdsp6: audioreach: add q6apm-dai support")
Reported-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220610144818.511797-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/qcom/qdsp6/q6apm-dai.c b/sound/soc/qcom/qdsp6/q6apm-dai.c
index 19c4a90ec1ea96e793f00016c0dc03040428fcfe..ee59ef36b85a614916f0a90fdbdc129ac59f0821 100644 (file)
--- a/sound/soc/qcom/qdsp6/q6apm-dai.c
+++ b/sound/soc/qcom/qdsp6/q6apm-dai.c
@@ -147,6 +147,12 @@ static int q6apm_dai_prepare(struct snd_soc_component *component,
        cfg.num_channels = runtime->channels;
        cfg.bit_width = prtd->bits_per_sample;
 
+       if (prtd->state) {
+               /* clear the previous setup if any  */
+               q6apm_graph_stop(prtd->graph);
+               q6apm_unmap_memory_regions(prtd->graph, substream->stream);
+       }
+
        prtd->pcm_count = snd_pcm_lib_period_bytes(substream);
        prtd->pos = 0;
        /* rate and channels are sent to audio driver */