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ASoC: sof: Improve sof_ipc3_bytes_ext_put function

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The function is improved in the way that if the firmware returns a
validation error on the newly sent bytes, then the kernel will
automatically restore to the old bytes value for a given kcontrol.

This way, if the firmware rejects a data blob then the kernel will also
reject it, instead of saving it for the next suspend/resume cycle. The
old behaviour is that the kernel would save it anyway and on next
firmware boot it would apply the previously-rejected configuration,
leading to errors during playback.

Additionally, the function also saves previously validated
configurations, so that if the firmware does end up rejecting a new
bytes value the kernel can send an old, previously-valid configuration.

Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Paul Olaru <paul.olaru@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20230503081049.73847-2-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Paul Olaru
2023-05-03 11:10:48 +03:00
committed by Mark Brown
parent f9d790c578
commit 299f6c752f
2 changed files with 49 additions and 6 deletions
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1
sound/soc/sof/sof-audio.h
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@@ -362,6 +362,7 @@ struct snd_sof_control {
size_t priv_size; /* size of private data */
size_t max_size;
void *ipc_control_data;
void *old_ipc_control_data;
int max; /* applicable to volume controls */
u32 size; /* cdata size */
u32 *volume_table; /* volume table computed from tlv data*/