Unverified Commit df6380dc authored by V sujith kumar Reddy's avatar V sujith kumar Reddy Committed by Mark Brown
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ASoC: SOF: amd: Add pcm pointer callback for amd platforms. 



Add pcm pointer callback for amd platforms to read host position
update from stream box.

Signed-off-by: default avatarV sujith kumar Reddy <Vsujithkumar.Reddy@amd.com>
Link: https://lore.kernel.org/r/20230308084509.1496256-2-Vsujithkumar.Reddy@amd.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f1fbb6a2

sound/soc/sof/amd/acp-common.c

+1 −0
Original line number Diff line number Diff line
@@ -187,6 +187,7 @@ struct snd_sof_dsp_ops sof_acp_common_ops = { 
	.pcm_open		= acp_pcm_open,

	.pcm_close		= acp_pcm_close,

	.pcm_hw_params		= acp_pcm_hw_params,

	.pcm_pointer		= acp_pcm_pointer,



	.hw_info		= SNDRV_PCM_INFO_MMAP |

				  SNDRV_PCM_INFO_MMAP_VALID |

sound/soc/sof/amd/acp-pcm.c

+33 −0
Original line number Diff line number Diff line
@@ -84,3 +84,36 @@ int acp_pcm_close(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) 
	return acp_dsp_stream_put(sdev, stream);

}

EXPORT_SYMBOL_NS(acp_pcm_close, SND_SOC_SOF_AMD_COMMON);



snd_pcm_uframes_t acp_pcm_pointer(struct snd_sof_dev *sdev,

				  struct snd_pcm_substream *substream)

{

	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);

	struct snd_soc_component *scomp = sdev->component;

	struct snd_sof_pcm_stream *stream;

	struct sof_ipc_stream_posn posn;

	struct snd_sof_pcm *spcm;

	snd_pcm_uframes_t pos;

	int ret;



	spcm = snd_sof_find_spcm_dai(scomp, rtd);

	if (!spcm) {

		dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",

				     rtd->dai_link->id);

		return 0;

	}



	stream = &spcm->stream[substream->stream];

	ret = snd_sof_ipc_msg_data(sdev, stream, &posn, sizeof(posn));

	if (ret < 0) {

		dev_warn(sdev->dev, "failed to read stream position: %d\n", ret);

		return 0;

	}



	memcpy(&stream->posn, &posn, sizeof(posn));

	pos = spcm->stream[substream->stream].posn.host_posn;

	pos = bytes_to_frames(substream->runtime, pos);



	return pos;

}

EXPORT_SYMBOL_NS(acp_pcm_pointer, SND_SOC_SOF_AMD_COMMON);

sound/soc/sof/amd/acp.h

+2 −0
Original line number Diff line number Diff line
@@ -238,6 +238,8 @@ int acp_pcm_close(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream) 
int acp_pcm_hw_params(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream,

		      struct snd_pcm_hw_params *params,

		      struct snd_sof_platform_stream_params *platform_params);

snd_pcm_uframes_t acp_pcm_pointer(struct snd_sof_dev *sdev,

				  struct snd_pcm_substream *substream);



extern struct snd_sof_dsp_ops sof_acp_common_ops;