Harald Welte [Mon, 15 Sep 2008 14:41:31 +0000 (22:41 +0800)]
ALSA: HDA VIA: Fix crash on codecs without Headphone
Don't enumerate via_hp_mixer while hp_mux is null (headphone does not exist),
to fix the crash of via_independent_hp_info (via_hp_mixer's .info), which will
reference hp_mux.
Signed-off-by: Logan Li <LoganLi@viatech.com.cn> Signed-off-by: Harald Welte <HaraldWelte@viatech.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
ASoC and non-ASoC drivers for PCM DMA on PXA share lots of common code.
Move it to pxa2xx-lib.
[Fixed some checkpatch warnings -- broonie]
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
ALSA: pxa2xx-ac97-lib: support building for several CPUs
Support building of pxa2xx-ac97-lib for several CPUs by making code
run-time selected, not only compile-time.
[Fixed 3XX->3xx typos in ifdef checks -- broonie.]
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
ASoC and non-ASoC drivers for ACLINK on PXA share lot's of common code.
Move all common code into separate module snd-pxa2xx-lib.
[Fixed handing of SND_AC97_CODEC in Kconfig and some checkpatch warnings
-- broonie]
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
sound: ASoC: Support runtime selection of CPU in pxa2xx-i2s
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The WM8971 is a low power, high quality stereo codec designed for
portable digital audio applications.
This driver was originally written by Kenneth Kiraly. While out of tree
it has had updates to reflect current kernel APIs and coding standards
from Graeme Gregory and Mark Brown.
Signed-off-by: Kenneth Kiraly <kiraly@lab126.com> Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com> Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Robin H. Johnson [Sat, 13 Sep 2008 23:54:57 +0000 (16:54 -0700)]
ALSA: HDA: hda_proc: Fix printf format specifier
The Pincap output had a typod format specifier, leading to an extraneous "08"
in the output, which is a reserved bit of the Vref field, and was really
confused :-).
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Matthew Ranostay [Sat, 13 Sep 2008 20:45:39 +0000 (16:45 -0400)]
ALSA: hda: 92hd73xx fixes
Added support for defining the number of amps and the creation
of the private_dimux dynamically for the 92hd73xx codec family.
Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
[Fixed a typo by tiwai] Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Don't use __init but __devinit to define probe function. A pointer to
snd_aica_probe is passed to the core via platform_driver_register and so the
function must not disappear after the module is loaded. Using __init
and having HOTPLUG=y and SND_AICA=m the following probably oopses:
ALSA: hda: fix oopses in snd-hda-intel after digital slave support additions
Many places fail to check if codec has slave_dig_outs entries (the most common
case is not having any entry), leading to various possible oopses in hda_codec
code.
Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Alan Horstmann [Tue, 9 Sep 2008 18:25:49 +0000 (19:25 +0100)]
sound: ASoC: Fix WM8731 SPI write
Ensure wm8731_spi_write byte order is consistent regardless of
endianess.
Signed-off-by: Alan Horstmann <gineera@aspect135.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Clemens Ladisch [Mon, 22 Sep 2008 07:03:42 +0000 (09:03 +0200)]
ALSA: oxygen: configure MIDI via device_config
To enable the MIDI port, model drivers must now set flags in
device_config, not only in misc_flags. This allows model drivers to
enable the UART without creating an ALSA MIDI device.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Clemens Ladisch [Mon, 22 Sep 2008 07:00:30 +0000 (09:00 +0200)]
ALSA: virtuoso: handle D2X/DX dynamically
The Xonar D2X and DX are very similar to the D2 and D1, respectively, so
we can handle the differences dynamically instead of using a separate
model structure for each one.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Harald Welte [Tue, 9 Sep 2008 07:58:27 +0000 (15:58 +0800)]
ALSA: HDA patch_via.c: Independent DAC for headphone
This mode allows an output stream to have two substreams, one for the
speakers and one for the headphone. Each of the substreams has independent
PCM data and uses a different DAC.
Signed-off-by: Harald Welte <HaraldWelte@viatech.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
ALSA: fix section for sa11xx-uda1341 platform driver
Don't use __init but __devinit to define probe function. A pointer to
sa11xx_uda1341_probe is passed to the core via platform_driver_register
and so the function must not disappear after the module is loaded. Using
__init and having HOTPLUG=y and SND_SA11XX_UDA1341=m the following
probably oopses:
Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Brian Avery <b.avery@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Added support for playing a stream on multiple digital outs. This is done
by defining codec->slave_dig_outs as array of hda_nid_t with a null-terminated entry to set the
slave SPDIF outs, in which the slave outs have cloned settings of the master out (e.g. dig_out_nid).
Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
ALSA: ice1712/ice1724: Coding style fixes part 1 (more coming up)
Inspired by Alexander Beregalov's patches for wtm and aureon.c,
I decided to run checkpatch on some more files. After some work
checkpatch.pl-0.23 --no-tree --file --strict <file> reports
0 errors, 0 warnings, 0 checks, n lines checked for:
phase.c
phase.h
juli.c (1 check about unused code, maybe we should comment it)
juli.h (no changes necessary)
In other files I have just fixed // comments and long lines along the
way (but not all of them), more coming up.
Compile tested, size is different because of include was changed,
but without that change md5sum is different because of cmp cx,dx/cmp
dx,cx swap and __LINE__ was changed in printk function.
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:21:34 +0000 (18:21 +0800)]
sound: ASoC: Blackfin: Include Blackfin architecture support in build
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:21:42 +0000 (18:21 +0800)]
sound: ASoC: Blackfin: add Blackfin arch ASoC Kconfig and Makefile
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:21:41 +0000 (18:21 +0800)]
sound: ASoC: Blackfin: board driver for SSM2602 sound chip
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:21:40 +0000 (18:21 +0800)]
sound: ASoC: Blackfin: board driver for AD1980/1 audio codec
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:21:39 +0000 (18:21 +0800)]
sound: ASoC: Blackfin: I2S CPU DAI driver
[Additional coding standards fixes by Mark Brown.]
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:21:38 +0000 (18:21 +0800)]
sound: ASoC: Blackfin: DMA Driver for I2S sound chip
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:21:37 +0000 (18:21 +0800)]
sound: ASoC: Blackfin: AC97 Blackfin CPU DAI driver
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:21:36 +0000 (18:21 +0800)]
sound: ASoC: Blackfin: DMA Driver for AC97 sound chip
[Additional coding standards fixes by Mark Brown.]
Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:21:35 +0000 (18:21 +0800)]
sound: ASoC: Blackfin: SPORT peripheral interface driver
SPORT is a serial port which can support serveral serial communication
protocols. It can be used as I2C/PCM/AC97. For further information,
please look up the HRM.
[Additional coding standards fixes by Mark Brown.]
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Fri, 5 Sep 2008 10:09:57 +0000 (18:09 +0800)]
sound: ASoC codec: SSM2602 audio codec driver
[Some checkpatch fixups done by Mark Brown.]
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jean Delvare [Tue, 2 Sep 2008 15:07:30 +0000 (17:07 +0200)]
sound: ASoC: Convert wm8510 to a new-style i2c driver
Convert the wm8510 codec driver to the new (standard) device
driver binding model.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Geoffrey Wossum <gwossum@acm.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jean Delvare [Mon, 1 Sep 2008 15:46:57 +0000 (17:46 +0200)]
sound: ASoC: Convert neo1973/lm4857 to a new-style i2c driver
Convert the lm4857 driver in neo1973_wm8753 to the new (standard)
i2c device driver binding model. I assumed that the LM4857 was always
on the same I2C bus as the WM8753 codec.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Tim Niemeyer <reddog@mastersword.de> Cc: Graeme Gregory <graeme@openmoko.org> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jean Delvare [Mon, 1 Sep 2008 15:45:34 +0000 (17:45 +0200)]
sound: ASoC: Convert wm8753 to a new-style i2c driver
Convert the wm8753 codec driver to the new (standard) i2c device
driver binding model.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Ville Syrjala <syrjala@sci.fi> Cc: Frank Mandarino <fmandarino@endrelia.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jean Delvare [Mon, 1 Sep 2008 15:44:05 +0000 (17:44 +0200)]
sound: ASoC: Fix an error path in neo1973_wm8753
The error handling in neo1973_init is incorrect:
* If platform_device_add fails, we go on with the rest of the
initialization instead of bailing out. Things will break when the
module is removed (platform_device_unregister called on a device
that wasn't registered.)
* If i2c_add_driver fails, we return an error so the module will not
load, but we don't unregister neo1973_snd_device, so we are leaking
resources.
Add the missing error handling.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Tim Niemeyer <reddog@mastersword.de> Cc: Graeme Gregory <graeme@openmoko.org> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
sound: remove reference to dead sound OSS vars AEDSP16_MSS and SBPRO
Remove the Kconfig definitions of unused variables AEDSP16_MSS and
AEDSP16_SBPRO since they're:
1) unused, and
2) referenced incorrectly anyway.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Mark Brown [Mon, 1 Sep 2008 17:47:04 +0000 (18:47 +0100)]
ALSA: ASoC: Don't suggest compile time selection of codec access
Currently the boiler plate code used by most ASoC codecs to provide a
placeholder for SPI access suggests making the selection of SPI a
compile time option which is suboptimal when trying to build kernels
supporting multiple systems. Change this template to suggest allowing
runtime selection instead.
Leave the drivers not yet converted to new style I2C access for now to
avoid collisions.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cliff Cai [Mon, 1 Sep 2008 17:47:03 +0000 (18:47 +0100)]
ALSA: ASoC: Add SPI support for WM8731
[Modified to allow runtime selection between I2C and SPI and to select
SPI_MASTER for all codecs build so this is included. -- broonie]
Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jean Delvare [Mon, 1 Sep 2008 17:47:02 +0000 (18:47 +0100)]
ALSA: ASoC: Convert wm8990 to a new-style i2c driver
Convert the wm8990 codec driver to the new (standard) device driver
binding model. After this change, WM8990 devices are no longer
discovered automatically and must instead be instantiated explicitly.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jean Delvare [Mon, 1 Sep 2008 17:47:01 +0000 (18:47 +0100)]
ALSA: ASoC: Convert wm8731 to a new-style i2c driver
Convert the wm8731 codec driver to the new (standard) device driver
binding model.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jean Delvare [Mon, 1 Sep 2008 17:47:00 +0000 (18:47 +0100)]
ALSA: ASoC: Convert wm8750 to a new-style i2c driver
Convert the wm8750 codec driver to the new (standard) device driver
binding model.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jean Delvare [Mon, 1 Sep 2008 17:46:59 +0000 (18:46 +0100)]
ALSA: ASoC: Convert ak4535 to a new-style i2c driver
Convert the ak4535 codec driver to the new (standard) device driver
binding model. After this change, AK4535 devices are no longer
discovered automatically and must instead be instantiated explicitly.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Jean Delvare [Mon, 1 Sep 2008 17:46:58 +0000 (18:46 +0100)]
ALSA: ASoC: Convert uda1380 to a new-style i2c driver
Convert the uda1380 codec driver to the new (standard) device driver
binding model.
Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Mark Brown [Mon, 1 Sep 2008 17:46:57 +0000 (18:46 +0100)]
ALSA: ASoC: Make all codecs depend on rather than selecting I2C
The I2C layer uses I/O operations that aren't available on all
architectures and since select bypasses Kconfig dependency checking
selecting I2C breaks builds like allmodconfig on some architectures.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
As noted by Gu Rui in http://bugzilla.kernel.org/show_bug.cgi?id=11444,
there is a typo in Documentation/sound/alsa/ALSA-Configuration.txt.
After checking the source (sound/pci/hda/hda_intel.c), the report
looks correct to me.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Harvey Harrison [Fri, 29 Aug 2008 20:32:00 +0000 (13:32 -0700)]
ALSA: ac97_patch make functions static
Only used in ac97_codec by including ac97_patch.c directly, effectively static
Found by sparse:
sound/pci/ac97/ac97_patch.c:3551:5: warning: symbol 'patch_vt1617a' was not declared. Should it be static?
sound/pci/ac97/ac97_patch.c:3767:5: warning: symbol 'patch_vt1618' was not declared. Should it be static?
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Takashi Iwai [Fri, 29 Aug 2008 14:17:25 +0000 (16:17 +0200)]
ALSA: ice1724 - limit channels for multi-channel playback
Limit the available channels for multi-channel playback device to
the real number of channels. Until now, always up to 8 channels
are created, which are simply useless without the real outputs.
Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Vedran Miletic [Fri, 29 Aug 2008 16:31:13 +0000 (18:31 +0200)]
ALSA: ice1724: Enable MIDI on TerraTec PHASE 22 and PHASE 28
Even though MIDI was fixed on ice1724 chips a while ago, it wasn't yet
enabled for some cards as it didn't get enough testing. This was tested
with MIDI keyboard on PHASE 22 and with looping back output to input and
it works stable, so it's safe to enable it.
Besides this, there are some more minor fixes, not exactly user visible:
* added info about PHASE 28 (collected, as I don't have a card)
* added info about TS22PCI and new revisions of PHASE 22
* disable 192k on PHASE 22 as AK4524 I2S doesn't support it
* enable SPDIF reciever on PHASE 22
ALSA: ice1724: enable MIDI on Terratec Aureon 7.1 Universe
This enables MIDI on Terratec Aureon 7.1 Universe cards specifically.
Apparently the other envy24ht-based Aureon cards do not have MIDI ports,
hence I added a Universe specific eeprom array.
The newer cards (Aureon 7.1 PCI / 5.1 PCI/Fun) have MIDI but use a CMI
DSP so this driver does not concern them at all.
Signed-off-by: Maximilian Rehkopf <otakon@gmx.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Tejun Heo [Thu, 28 Aug 2008 14:42:51 +0000 (16:42 +0200)]
sound: make OSS sound core optional
sound/sound_core.c implements soundcore.ko and contains two parts -
sound_class which is shared by both ALSA and OSS and device
redirection support for OSS. It's always compiled when any sound
support is enabled although it's necessary only when OSS (the actual
one or emulation) is enabled. This is slightly wasteful and as device
redirection always registers character device region for major 14, it
prevents alternative implementation.
This patch introduces a new config SOUND_OSS_CORE which is selected
iff OSS support is actually necessary and build the OSS core part
conditionally.
If OSS is disabled, soundcore merely contains sound_class but leaving
it that way seems to be the simplest approach as otherwise sound_class
should be in ALSA core file if OSS is disabled but should be in
soundcore if OSS is enabled. Also, there's also the user confusion
factor.