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| author |   Jaroslav Kysela <perex@perex.cz> | 2021-03-17 18:29:42 +0100 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2021-03-30 15:33:58 +0200 |
| commit | 22d8de62f11b287b279f1d4473a78c7d5e53e7bc (patch) | |
| tree | c70cf12a37bf874e36b727dbefece077b34febe5 /sound/core/Kconfig | |
| parent | ALSA: control - add layer registration routines (diff) | |
| download | wireguard-linux-22d8de62f11b287b279f1d4473a78c7d5e53e7bc.tar.xz wireguard-linux-22d8de62f11b287b279f1d4473a78c7d5e53e7bc.zip | |
ALSA: control - add generic LED trigger module as the new control layer
The recent laptops have usually two LEDs assigned to reflect
the speaker and microphone mute state. This implementation
adds a tiny layer on top of the control API which calculates
the state for those LEDs using the driver callbacks.
Two new access flags are introduced to describe the controls
which affects the audio path settings (an easy code change
for drivers).
The LED resource can be shared with multiple sound cards with
this code. The user space controls may be added to the state
chain on demand, too.
This code should replace the LED code in the HDA driver and
add a possibility to easy extend the other drivers (ASoC
codecs etc.).
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20210317172945.842280-4-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/Kconfig')
| -rw-r--r-- | sound/core/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/core/Kconfig b/sound/core/Kconfig index a4050f87f230..db2e3c63ff41 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -203,4 +203,10 @@ config SND_DMA_SGBUF def_bool y depends on X86 +config SND_CTL_LED + tristate + select NEW_LEDS if SND_CTL_LED + select LEDS_TRIGGERS if SND_CTL_LED + select LEDS_TRIGGER_AUDIO if SND_CTL_LED + source "sound/core/seq/Kconfig" |