--- Begin Message ---
- To: <broonie@xxxxxxxxxx>, <alsa-devel@xxxxxxxxxxxxxxxx>
- Subject: [PATCH 1/2] ASoC: SOF: amd: Add pcm pointer callback for amd platforms.
- From: V sujith kumar Reddy <Vsujithkumar.Reddy@xxxxxxx>
- Date: Wed, 8 Mar 2023 14:15:08 +0530
- Cc: Vijendar.Mukunda@xxxxxxx, Basavaraj.Hiregoudar@xxxxxxx, Sunil-kumar.Dommati@xxxxxxx, ajitkumar.pandey@xxxxxxx, V sujith kumar Reddy <Vsujithkumar.Reddy@xxxxxxx>, Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>, Liam Girdwood <lgirdwood@xxxxxxxxx>, Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>, Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>, Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>, Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>, Daniel Baluta <daniel.baluta@xxxxxxx>, Takashi Iwai <tiwai@xxxxxxxx>, Ajit Kumar Pandey <AjitKumar.Pandey@xxxxxxx>, Rander Wang <rander.wang@xxxxxxxxx>, "moderated list:SOUND - SOUND OPEN FIRMWARE (SOF) DRIVERS" <sound-open-firmware@xxxxxxxxxxxxxxxx>, open list <linux-kernel@xxxxxxxxxxxxxxx>
- In-reply-to: <20230308084509.1496256-1-Vsujithkumar.Reddy@amd.com>
- References: <20230308084509.1496256-1-Vsujithkumar.Reddy@amd.com>
Add pcm pointer callback for amd platforms to read host position update from stream box. Signed-off-by: V sujith kumar Reddy <Vsujithkumar.Reddy@xxxxxxx> --- sound/soc/sof/amd/acp-common.c | 1 + sound/soc/sof/amd/acp-pcm.c | 33 +++++++++++++++++++++++++++++++++ sound/soc/sof/amd/acp.h | 2 ++ 3 files changed, 36 insertions(+) diff --git a/sound/soc/sof/amd/acp-common.c b/sound/soc/sof/amd/acp-common.c index bd6c1b198736..8ce4c8956933 100644 --- a/sound/soc/sof/amd/acp-common.c +++ b/sound/soc/sof/amd/acp-common.c @@ -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 | diff --git a/sound/soc/sof/amd/acp-pcm.c b/sound/soc/sof/amd/acp-pcm.c index 727c3a784a20..f342f0bac4a3 100644 --- a/sound/soc/sof/amd/acp-pcm.c +++ b/sound/soc/sof/amd/acp-pcm.c @@ -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); diff --git a/sound/soc/sof/amd/acp.h b/sound/soc/sof/amd/acp.h index 39165ebf684b..acad57947616 100644 --- a/sound/soc/sof/amd/acp.h +++ b/sound/soc/sof/amd/acp.h @@ -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; -- 2.25.1
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