diff options
| author | Stefan Binding <sbinding@opensource.cirrus.com> | 2025-04-30 11:31:20 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-05-01 08:22:06 +0900 |
| commit | d5463e531c128ff1b141fdba2e13345cd50028a4 (patch) | |
| tree | c9f1b939320f148bbe0f55029e80683c2bd328f4 /include | |
| parent | 02b44a2b2bdcee03cbb92484d31e9ca1b91b2a38 (diff) | |
ASoC: intel/sdw_utils: Add volume limit to cs35l56 speakers
The volume control for cs35l56 speakers has a maximum gain of +12 dB.
However, for many use cases, this can cause distorted audio, depending
various factors, such as other signal-processing elements in the chain,
for example if the audio passes through a gain control before reaching
the amp or the signal path has been tuned for a particular maximum
gain in the amp.
In the case of systems which use the soc_sdw_* driver, audio will
likely be distorted in all cases above 0 dB, therefore add a volume
limit of 400, which is 0 dB maximum volume inside this driver.
The volume limit should be applied to both soundwire and soundwire
bridge configurations.
Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Link: https://patch.msgid.link/20250430103134.24579-3-sbinding@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sound/soc_sdw_utils.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/soc_sdw_utils.h b/include/sound/soc_sdw_utils.h index 36a4a1e1d8ca..d8bd5d37131a 100644 --- a/include/sound/soc_sdw_utils.h +++ b/include/sound/soc_sdw_utils.h @@ -226,6 +226,7 @@ int asoc_sdw_cs_amp_init(struct snd_soc_card *card, bool playback); int asoc_sdw_cs_spk_feedback_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai); +int asoc_sdw_cs35l56_volume_limit(struct snd_soc_card *card, const char *name_prefix); /* MAXIM codec support */ int asoc_sdw_maxim_init(struct snd_soc_card *card, |