Commit 0d94e41a authored by Mark Brown's avatar Mark Brown Committed by Jaroslav Kysela
Browse files

ALSA: Build jack detection 



Since jack detection requires the input subsystem which may not be
desired on small systems it is not built unless required by a driver
that is being built. Drivers using jack detection should use a pattern
like this:

config SND_FOO
        tristate "..."
        ...
        select SND_JACK if INPUT=y || INPUT=SND

to ensure that the jack detection API is enabled if the input subsystem
is.  If the input subsystem is not enabled then a stub version of the
API is provided.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
parent e76d8cea

sound/core/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -12,6 +12,12 @@ config SND_HWDEP 
config SND_RAWMIDI

	tristate



# To be effective this also requires INPUT - users should say:

#    select SND_JACK if INPUT=y || INPUT=SND

# to avoid having to force INPUT on.

config SND_JACK

	bool



config SND_SEQUENCER

	tristate "Sequencer support"

	select SND_TIMER

sound/core/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ snd-y := sound.o init.o memory.o info.o control.o misc.o device.o 
snd-$(CONFIG_ISA_DMA_API) += isadma.o

snd-$(CONFIG_SND_OSSEMUL) += sound_oss.o info_oss.o

snd-$(CONFIG_SND_VMASTER) += vmaster.o

snd-$(CONFIG_SND_JACK)	  += jack.o



snd-pcm-objs := pcm.o pcm_native.o pcm_lib.o pcm_timer.o pcm_misc.o \

		pcm_memory.o

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