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Commit 71309e08 authored by Kenneth Westfield's avatar Kenneth Westfield
Browse files

ASoC: msm: qdsp6v2: update path_delay in delay ops 



Update the path_delay in audio_client to the
current value from ASM_SESSION_GET_PATH_DELAY_V2.
The path_delay is then converted to frames and
stored in the runtime.

Change-Id: I184ad9ac53e7e2cbbaa1c0e7f5bfa78543137e8b
Signed-off-by: default avatarKenneth Westfield <kwestfie@codeaurora.org>
parent 210cbc1a

sound/soc/msm/qdsp6v2/msm-pcm-q6-v2.c

+28 −0
Original line number Diff line number Diff line
@@ -1199,9 +1199,37 @@ static int msm_asoc_pcm_new(struct snd_soc_pcm_runtime *rtd) 
	return ret;

}



static snd_pcm_sframes_t msm_pcm_delay_blk(struct snd_pcm_substream *substream,

		struct snd_soc_dai *dai)

{

	struct snd_pcm_runtime *runtime = substream->runtime;

	struct msm_audio *prtd = runtime->private_data;

	struct audio_client *ac = prtd->audio_client;

	snd_pcm_sframes_t frames;

	int ret;



	ret = q6asm_get_path_delay(prtd->audio_client);

	if (ret) {

		pr_err("%s: get_path_delay failed, ret=%d\n", __func__, ret);

		return 0;

	}



	/* convert microseconds to frames */

	frames = ac->path_delay / 1000 * runtime->rate / 1000;



	/* also convert the remainder from the initial division */

	frames += ac->path_delay % 1000 * runtime->rate / 1000000;



	/* overcompensate for the loss of precision (empirical) */

	frames += 2;



	return frames;

}



static struct snd_soc_platform_driver msm_soc_platform = {

	.ops		= &msm_pcm_ops,

	.pcm_new	= msm_asoc_pcm_new,

	.delay_blk      = msm_pcm_delay_blk,

};



static int msm_pcm_probe(struct platform_device *pdev)