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ASoC: topology: Save num_channels value for mixer controls

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To provide minimal support for multi-channel kcontrols i.e.: more than
stereo configuration, store the number of channels specified within the
SectionControlMixer. The field is part of the topology standard,
currently skipped by the ASoC core.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://patch.msgid.link/20250217102115.3539427-3-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cezary Rojewski 2025-02-17 11:21:07 +01:00 committed by Mark Brown
parent 758beab025
commit 81eb3a2bd2
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2 changed files with 2 additions and 0 deletions
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1
include/sound/soc.h
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@ -1254,6 +1254,7 @@ struct soc_mixer_control {
int min, max, platform_max;
int reg, rreg;
unsigned int shift, rshift;
u32 num_channels;
unsigned int sign_bit;
unsigned int invert:1;
unsigned int autodisable:1;

1
sound/soc/soc-topology.c
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@ -669,6 +669,7 @@ static int soc_tplg_control_dmixer_create(struct soc_tplg *tplg, struct snd_kcon
sm->min = le32_to_cpu(mc->min);
sm->invert = le32_to_cpu(mc->invert);
sm->platform_max = le32_to_cpu(mc->platform_max);
sm->num_channels = le32_to_cpu(mc->num_channels);
/* map io handlers */
err = soc_tplg_kcontrol_bind_io(&mc->hdr, kc, tplg);