diff options
author | Lars-Peter Clausen <lars@metafoo.de> | 2015-04-27 20:13:23 (GMT) |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2015-04-27 20:34:45 (GMT) |
commit | fa880775ab0d5a8d540972f7b6800fad1af16b75 (patch) | |
tree | 201bcfeaaccfb233e674bd10ac8d834520bc7025 /include/sound/soc.h | |
parent | 39ed68c8cd3aff417603a95d0594308598b9f469 (diff) | |
download | linux-fa880775ab0d5a8d540972f7b6800fad1af16b75.tar.xz |
ASoC: Add helper functions bias level management
Currently drivers are responsible for managing the bias_level field of
their DAPM context. The DAPM state itself is managed by the DAPM core
though and the core has certain expectations on how and when the bias_level
field should be updated. If drivers don't adhere to these undefined
behavior can occur.
This patch adds a few helper functions for manipulating the DAPM context
state, each function with a description on when it should be used and what
its effects are. This will also help us to move more of the bias_level
management from drivers to the DAPM core.
For convenience also add snd_soc_codec_* wrappers around these helpers.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/soc.h')
-rw-r--r-- | include/sound/soc.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index 2f74200..7781bfe 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1282,6 +1282,46 @@ static inline struct snd_soc_dapm_context *snd_soc_codec_get_dapm( } /** + * snd_soc_dapm_init_bias_level() - Initialize CODEC DAPM bias level + * @dapm: The CODEC for which to initialize the DAPM bias level + * @level: The DAPM level to initialize to + * + * Initializes the CODEC DAPM bias level. See snd_soc_dapm_init_bias_level(). + */ +static inline void snd_soc_codec_init_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + snd_soc_dapm_init_bias_level(snd_soc_codec_get_dapm(codec), level); +} + +/** + * snd_soc_dapm_get_bias_level() - Get current CODEC DAPM bias level + * @codec: The CODEC for which to get the DAPM bias level + * + * Returns: The current DAPM bias level of the CODEC. + */ +static inline enum snd_soc_bias_level snd_soc_codec_get_bias_level( + struct snd_soc_codec *codec) +{ + return snd_soc_dapm_get_bias_level(snd_soc_codec_get_dapm(codec)); +} + +/** + * snd_soc_codec_force_bias_level() - Set the CODEC DAPM bias level + * @codec: The CODEC for which to set the level + * @level: The level to set to + * + * Forces the CODEC bias level to a specific state. See + * snd_soc_dapm_force_bias_level(). + */ +static inline int snd_soc_codec_force_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + return snd_soc_dapm_force_bias_level(snd_soc_codec_get_dapm(codec), + level); +} + +/** * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol * @kcontrol: The kcontrol * |