diff options
| author | Charles Keepax <ckeepax@opensource.cirrus.com> | 2025-05-16 16:10:10 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-05-20 13:15:40 +0300 |
| commit | c3ca24e3fcb656c6afe702b69e6e9efcc3ff1128 (patch) | |
| tree | eb8a327d45c032fa29facc35dd5ffa480e5f72b5 /include | |
| parent | 2c8b3a8e6aa877583e5dc2f669a8adc896a771d4 (diff) | |
| download | linux-c3ca24e3fcb656c6afe702b69e6e9efcc3ff1128.tar.xz | |
ASoC: SDCA: Create ALSA controls from DisCo
Use the previously parsed DisCo information from ACPI to create the
ALSA controls required by an SDCA Function. This maps all User and
Application level SDCA Controls to ALSA controls. Typically controls
marked with those access levels are just volumes and mutes.
SDCA defines volume controls as an integer in 1/256ths of a dB and
then provides a mechanism to specify what values are valid (range
templates). Currently only a simple case of a single linear volume
range with a power of 2 step size is supported. This allows the code
to expose the volume control using a simple shift. This will need
expanded in the future, to support more complex ranges and probably
also some additional control types but this should be sufficient to
for a first pass.
For non-dataport terminal widgets also add a pin switch to allow
that endpoint to be turned on/off.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
Link: https://patch.msgid.link/20250516131011.221310-7-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/sound/sdca_asoc.h | 6 | ||||
| -rw-r--r-- | include/sound/sdca_function.h | 10 |
2 files changed, 15 insertions, 1 deletions
diff --git a/include/sound/sdca_asoc.h b/include/sound/sdca_asoc.h index 414d461b6fc4..d19e7e969283 100644 --- a/include/sound/sdca_asoc.h +++ b/include/sound/sdca_asoc.h @@ -12,16 +12,20 @@ struct device; struct sdca_function_data; +struct snd_kcontrol_new; struct snd_soc_component_driver; struct snd_soc_dapm_route; struct snd_soc_dapm_widget; int sdca_asoc_count_component(struct device *dev, struct sdca_function_data *function, - int *num_widgets, int *num_routes); + int *num_widgets, int *num_routes, int *num_controls); int sdca_asoc_populate_dapm(struct device *dev, struct sdca_function_data *function, struct snd_soc_dapm_widget *widgets, struct snd_soc_dapm_route *routes); +int sdca_asoc_populate_controls(struct device *dev, + struct sdca_function_data *function, + struct snd_kcontrol_new *kctl); int sdca_asoc_populate_component(struct device *dev, struct sdca_function_data *function, diff --git a/include/sound/sdca_function.h b/include/sound/sdca_function.h index 008e23882de8..2ecf0c3a5e03 100644 --- a/include/sound/sdca_function.h +++ b/include/sound/sdca_function.h @@ -207,6 +207,16 @@ enum sdca_fu_controls { }; /** + * enum sdca_volume_range - Column definitions for Q7.8dB volumes/gains + */ +enum sdca_volume_range { + SDCA_VOLUME_LINEAR_MIN = 0, + SDCA_VOLUME_LINEAR_MAX = 1, + SDCA_VOLUME_LINEAR_STEP = 2, + SDCA_VOLUME_LINEAR_NCOLS = 3, +}; + +/** * enum sdca_xu_controls - SDCA Controls for Extension Unit * * Control Selectors for Extension Unit from SDCA specification v1.0 |