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ASoC: SOF: Introduce optional callback to configure stream data offset

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Each running audio stream's data have distinct start offset within the
stream mailbox area from/to where the host can read/write.

Instead of using the struct sof_ipc_pcm_params_reply to configure this
offset, add an optional callback which is IPC agnostic.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20220310042720.976809-5-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2022-03-09 20:27:14 -08:00 committed by Mark Brown
parent d1b1146fc7
commit 757ce8103c
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 26 additions and 0 deletions
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13
sound/soc/sof/ops.h
View File

@ -476,6 +476,19 @@ snd_sof_ipc_pcm_params(struct snd_sof_dev *sdev,
return sof_ops(sdev)->ipc_pcm_params(sdev, substream, reply);
}
/* host side configuration of the stream's data offset in stream mailbox area */
static inline int
snd_sof_set_stream_data_offset(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
size_t posn_offset)
{
if (sof_ops(sdev) && sof_ops(sdev)->set_stream_data_offset)
return sof_ops(sdev)->set_stream_data_offset(sdev, substream,
posn_offset);
return 0;
}
/* host stream pointer */
static inline snd_pcm_uframes_t
snd_sof_pcm_platform_pointer(struct snd_sof_dev *sdev,

8
sound/soc/sof/pcm.c
View File

@ -276,6 +276,14 @@ static int sof_pcm_hw_params(struct snd_soc_component *component,
return ret;
}
ret = snd_sof_set_stream_data_offset(sdev, substream,
ipc_params_reply.posn_offset);
if (ret < 0) {
dev_err(component->dev, "%s: invalid stream data offset for PCM %d\n",
__func__, spcm->pcm.pcm_id);
return ret;
}
spcm->prepared[substream->stream] = true;
/* save pcm hw_params */

5
sound/soc/sof/sof-priv.h
View File

@ -226,6 +226,11 @@ struct snd_sof_dsp_ops {
struct snd_pcm_substream *substream,
const struct sof_ipc_pcm_params_reply *reply); /* mandatory */
/* host side configuration of the stream's data offset in stream mailbox area */
int (*set_stream_data_offset)(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
size_t posn_offset); /* optional */
/* pre/post firmware run */
int (*pre_fw_run)(struct snd_sof_dev *sof_dev); /* optional */
int (*post_fw_run)(struct snd_sof_dev *sof_dev); /* optional */