ALSA: hda: generic: Add a helper for mic-mute LED with LED classdev
A new helper, snd_hda_gen_add_micmute_led_cdev(), is introduced here
for creating a LED classdev and setting up the hook to the capture
control for controlling the mic-mute LED to follow the capture switch
change. This will replace the existing users of
snd_hda_gen_add_micmute_led() in later patches.
Also, introduce a new kconfig CONFIG_SND_HDA_GENERIC_LEDS, to indicate
the usage of mute / mic-mute LED helpers. It's selected by the codec
drivers (Realtek, Conexant and Sigmatel), while it selects the
necessary LED class dependencies.
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20200618110842.27238-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig
index 7ba542e..3f9abda 100644
--- a/sound/pci/hda/Kconfig
+++ b/sound/pci/hda/Kconfig
@@ -8,6 +8,9 @@
select SND_JACK
select SND_HDA_CORE
+config SND_HDA_GENERIC_LEDS
+ bool
+
config SND_HDA_INTEL
tristate "HD Audio PCI"
depends on SND_PCI
@@ -91,6 +94,7 @@
config SND_HDA_CODEC_REALTEK
tristate "Build Realtek HD-audio codec support"
select SND_HDA_GENERIC
+ select SND_HDA_GENERIC_LEDS
help
Say Y or M here to include Realtek HD-audio codec support in
snd-hda-intel driver, such as ALC880.
@@ -111,6 +115,7 @@
config SND_HDA_CODEC_SIGMATEL
tristate "Build IDT/Sigmatel HD-audio codec support"
select SND_HDA_GENERIC
+ select SND_HDA_GENERIC_LEDS
help
Say Y or M here to include IDT (Sigmatel) HD-audio codec support in
snd-hda-intel driver, such as STAC9200.
@@ -155,6 +160,7 @@
config SND_HDA_CODEC_CONEXANT
tristate "Build Conexant HD-audio codec support"
select SND_HDA_GENERIC
+ select SND_HDA_GENERIC_LEDS
help
Say Y or M here to include Conexant HD-audio codec support in
snd-hda-intel driver, such as CX20549.
@@ -215,6 +221,9 @@
config SND_HDA_GENERIC
tristate "Enable generic HD-audio codec parser"
+ select LEDS_CLASS if SND_HDA_GENERIC_LEDS
+ select LEDS_TRIGGERS if SND_HDA_GENERIC_LEDS
+ select LEDS_TRIGGER_AUDIO if SND_HDA_GENERIC_LEDS
help
Say Y or M here to enable the generic HD-audio codec parser
in snd-hda-intel driver.
