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linux/sound/pci
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Hans de Goede eb581adf25 ALSA: snd-maestro3: Make hardware volume buttons an input device (rev2) 
While working on the sound suspend / resume problems with my laptop
I noticed that the hardware volume handling code in essence just detects
key presses, and then does some hardcoded modification of the master volume
based on which key is pressed.

This made me think that clearly the right thing to do here is just report
these keypresses to userspace and let userspace decide what to with them.

This patch adds a Kconfig option which when enabled reports the volume
buttons as keypresses using an input device. When enabled this option
also gets rid of the ugly direct ac97 writes from the tasklet, the ac97lock
and the need for using a tasklet in general.

As an added bonus the keys now work identical to volume keys on a (usb)
keyboard with multimedia keys, providing visual feedback of the volume
level change, and a better range of the volume control (with a properly
configured desktop environment).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
 		2010-04-23 17:09:46 +02:00
..
ac97 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ali5451 sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
asihpi ALSA: Add support of AudioScience ASI boards 2010-04-22 07:21:53 +02:00
au88x0 sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
aw2 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ca0106 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
cs46xx ALSA: cs46xx - fix some typos 2010-02-18 08:12:30 +01:00
cs5535audio include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ctxfi include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
echoaudio Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-04-07 08:42:25 -07:00
emu10k1 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
hda Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-04-07 08:42:25 -07:00
ice1712 Merge remote branch 'alsa/devel' into topic/misc 2010-04-16 15:20:06 +02:00
korg1212 sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
lx6464es include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mixart Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-04-07 08:42:25 -07:00
nm256 sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
oxygen include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pcxhr sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
riptide ALSA: riptide: clean up while loop 2010-03-03 22:41:42 +01:00
rme9652 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
trident sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
vx222 sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
ymfpci sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
Kconfig ALSA: snd-maestro3: Make hardware volume buttons an input device (rev2) 2010-04-23 17:09:46 +02:00
Makefile ALSA: Add support of AudioScience ASI boards 2010-04-22 07:21:53 +02:00
ad1889.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
ad1889.h [ALSA] ad1889: add AD1889 driver 2005-09-12 10:40:17 +02:00
ak4531_codec.c ALSA: Fix missing KERN_* prefix to printk in sound/pci 2009-02-05 16:11:31 +01:00
als300.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
als4000.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
atiixp.c Merge branch 'fix/misc' into topic/misc 2010-02-17 14:24:46 +01:00
atiixp_modem.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
azt3328.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
azt3328.h ALSA: azt3328: fix previous breakage, improve suspend, cleanups 2009-07-15 12:03:26 +02:00
bt87x.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
cmipci.c ALSA: cmipci: work around invalid PCM pointer 2010-03-24 08:02:11 +01:00
cs4281.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
cs5530.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ens1370.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
ens1371.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
es1938.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
es1968.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
fm801.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
intel8x0.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
intel8x0m.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
maestro3.c ALSA: snd-maestro3: Make hardware volume buttons an input device (rev2) 2010-04-23 17:09:46 +02:00
rme32.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
rme96.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
sis7019.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
sis7019.h trivial: fix typos s/paramter/parameter/ and s/excute/execute/ in documentation and source comments. 2009-06-12 18:01:46 +02:00
sonicvibes.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00
via82xx.c Merge branch 'topic/misc' into for-linus 2010-03-01 12:38:49 +01:00
via82xx_modem.c sound: use DEFINE_PCI_DEVICE_TABLE 2010-02-09 11:08:33 +01:00