mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-24 09:13:20 -05:00
Code Activity

ASoC: SOF: ipc4-topology: Save the DMA maximum burst size for PCMs

Browse source 
When setting up the pcm widget, save the DSP buffer size (in ms) for
platform code to place a constraint on playback.

On playback the DMA will fill the buffer on start and if the period
size is smaller it will immediately overrun.

On capture the DMA will move data in 1ms bursts.

Cc: stable@vger.kernel.org # 6.8
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://msgid.link/r/20240321130814.4412-3-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2024-03-21 15:07:59 +02:00 • committed by Mark Brown
parent fb9f8125ed
commit 842bb8b62c
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 21 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
sound/soc/sof/ipc4-topology.c
View file

@ -412,8 +412,9 @@ static int sof_ipc4_widget_setup_pcm(struct snd_sof_widget *swidget)
struct sof_ipc4_available_audio_format *available_fmt;
struct snd_soc_component *scomp = swidget->scomp;
struct sof_ipc4_copier *ipc4_copier;
struct snd_sof_pcm *spcm;
int node_type = 0;
int ret;
int ret, dir;
ipc4_copier = kzalloc(sizeof(*ipc4_copier), GFP_KERNEL);
if (!ipc4_copier)
@ -447,6 +448,25 @@ static int sof_ipc4_widget_setup_pcm(struct snd_sof_widget *swidget)
}
dev_dbg(scomp->dev, "host copier '%s' node_type %u\n", swidget->widget->name, node_type);
spcm = snd_sof_find_spcm_comp(scomp, swidget->comp_id, &dir);
if (!spcm)
goto skip_gtw_cfg;
if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
struct snd_sof_pcm_stream *sps = &spcm->stream[dir];
sof_update_ipc_object(scomp, &sps->dsp_max_burst_size_in_ms,
SOF_COPIER_DEEP_BUFFER_TOKENS,
swidget->tuples,
swidget->num_tuples, sizeof(u32), 1);
/* Set default DMA buffer size if it is not specified in topology */
if (!sps->dsp_max_burst_size_in_ms)
sps->dsp_max_burst_size_in_ms = SOF_IPC4_MIN_DMA_BUFFER_SIZE;
} else {
/* Capture data is copied from DSP to host in 1ms bursts */
spcm->stream[dir].dsp_max_burst_size_in_ms = 1;
}
skip_gtw_cfg:
ipc4_copier->gtw_attr = kzalloc(sizeof(*ipc4_copier->gtw_attr), GFP_KERNEL);
if (!ipc4_copier->gtw_attr) {