linux/sound/core
Mark Brown ebb812cb8d ALSA: Add support for key reporting via the jack interface
Some devices provide support for detection of a small number of
buttons on their jacks. One common implementation provides a single
button, implemented by shorting the microphone to ground and detected
along with microphone presence detection by detecting varying current
draws on the microphone bias signal.

Provide support for up to three buttons via the jack interface. These
default to reporting BTN_n but an API is provided to allow these to
be remapped to other keys by the machine driver where it knows what
the keys are. More keys can be added with ease if required.

This is only intended to support simple accessory button designs. If
the interface is limiting then either creating a child device for the
accessory or accessing the input device in the jack directly is
recommended.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-03-17 18:10:46 +00:00
..
oss ALSA: pcm_lib - return back hw_ptr_interrupt 2010-01-26 17:50:50 +01:00
seq ALSA: trivial: sound seq ioctl dbg: print hexadecimal value padded with 0s 2010-02-02 00:27:47 +01:00
control_compat.c
control.c sound: control: fix minimum TLV length 2010-02-01 14:12:12 +01:00
device.c
hrtimer.c
hwdep_compat.c
hwdep.c
info_oss.c
info.c
init.c
isadma.c
jack.c ALSA: Add support for key reporting via the jack interface 2010-03-17 18:10:46 +00:00
Kconfig ALSA: sound/core/pcm_timer.c: use lib/gcd.c 2009-12-22 08:24:35 +01:00
Makefile
memalloc.c
memory.c
misc.c ALSA: Add snd_pci_quirk_lookup_id() 2010-01-14 09:18:48 +01:00
pcm_compat.c
pcm_lib.c Merge remote branch 'alsa/devel' into topic/misc 2010-01-26 18:13:04 +01:00
pcm_memory.c ALSA: pcm - Add missing inclusion of linux/vmalloc.h 2009-12-21 12:41:37 +01:00
pcm_misc.c
pcm_native.c Merge branch 'fix/misc' into topic/misc 2010-02-17 14:24:46 +01:00
pcm_timer.c ALSA: sound/core/pcm_timer.c: use lib/gcd.c 2009-12-22 08:24:35 +01:00
pcm.c ALSA: pcm_core: Fix wake_up() optimization 2010-01-21 10:32:15 +01:00
rawmidi_compat.c
rawmidi.c
rtctimer.c
sgbuf.c
sound_oss.c ALSA: Remove warning message for invalid OSS minor ranges 2010-01-18 14:18:55 +01:00
sound.c ALSA: use subsys_initcall for sound core instead of module_init 2010-01-14 21:21:47 +01:00
timer_compat.c
timer.c ALSA: timer - pass real event in snd_timer_notify1() to instance callback 2010-03-03 22:39:45 +01:00
vmaster.c