Commit Graph

81814 Commits

Author SHA1 Message Date
Takashi Iwai
6330079fc6 [ALSA] hda-codec - Fix handling of multiple capture streams
Fixed the bug that multiple capture streams conflict on Realtek codec
routines.
Also, this adds a framework to enable the alternative playback stream,
e.g. for VoIP.  It's not fully implemented yet, though.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:13 +01:00
Matthew Ranostay
09a9995918 [ALSA] hda: Add dynamic mono mixer support for STAC92xx codecs
Allows for dynamically creating mono out mixer controls and well
as mono mux controls.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:13 +01:00
Matthew Ranostay
90da78bf6a [ALSA] hda: Added mono_out_pin to autoconfig
Added a mono_out_pin field to autocfg struct, and code to parse
for the mono_out_line.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:13 +01:00
Clemens Ladisch
cd93dc8cca [ALSA] oxygen: remove MIDI for generic cards
None of the reference design models have MIDI, only the X-Meridian
allows to connect a MIDI adapter.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:13 +01:00
Clemens Ladisch
33c646e4ff [ALSA] oxygen: fix SPDIF input rates
Fix up SPDIF input sample rates again: 32 kHz and 64 kHz are not
supported.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:13 +01:00
Randy Dunlap
9478bc3bed [ALSA] fix opti9xx/miro section mismatch
snd_opti93x_mixer() is only called by __devinit snd_opti93x_probe(),
so the former can also be __devinit.
snd_miro_mixer() is only called by __devinit snd_miro_probe(),
so the former can also be __devinit.
sound/isa/opti9xx/opti92x-ad1848.c:
WARNING: vmlinux.o(.text+0xf91cd7): Section mismatch: reference to .init.data:snd_opti93x_controls (between 'snd_opti93x_mixer' and 'snd_card_opti9xx_free')
WARNING: vmlinux.o(.text+0xf91d66): Section mismatch: reference to .init.data:snd_miro_controls (between 'snd_opti93x_mixer' and 'snd_card_opti9xx_free')
opti9xx/miro.c:
WARNING: vmlinux.o(.text+0xf926c2): Section mismatch: reference to .init.data:snd_miro_controls (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf926e5): Section mismatch: reference to .init.data:snd_miro_eq_controls (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf926f9): Section mismatch: reference to .init.data:snd_miro_line_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf92716): Section mismatch: reference to .init.data:snd_miro_amp_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf9273e): Section mismatch: reference to .init.data:snd_miro_preamp_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf92764): Section mismatch: reference to .init.data:snd_miro_capture_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf92783): Section mismatch: reference to .init.data:snd_miro_radio_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf9279a): Section mismatch: reference to .init.data:snd_miro_eq_controls (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')
WARNING: vmlinux.o(.text+0xf927b9): Section mismatch: reference to .init.data:snd_miro_radio_control (between 'snd_miro_mixer' and 'snd_legacy_find_free_ioport')

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:12 +01:00
Randy Dunlap
5be55be58c [ALSA] fix cs5535 section mismatch
snd_cs5535audio_mixer() is only called by __devinit snd_cs5535audio_probe(),
so the mixer function can also be __devinit.
WARNING: vmlinux.o(.text+0xfdbba0): Section mismatch: reference to .init.data:ac97_quirks (between 'snd_cs5535audio_mixer' and 'process_bm0_irq')

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:12 +01:00
Mark Brown
7c4dbbd87c [ALSA] ASoC documentation updates
Update the ASoC documentation.  Along with minor formatting and grammar
cleanups it moves the ASoC overview into the present tense to reflect
the fact that it has now been merged.

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>
2008-01-31 17:30:10 +01:00
Takashi Iwai
dca008f367 [ALSA] hda-codec - Don't query widget parameter for invalid NID
Don't query a widget parameter for an invalid NID in get_wcaps() but
rather returns zero (i.e. no attribute).
The read to an non-existing widget may result in a fatal codec
communication error.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:10 +01:00
Takashi Iwai
0ef6ce7b6a [ALSA] hda-codec - Optimize snd_hda_pser_pin_def_config()
Don't read the widget list again as we already have it at the beginning.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:10 +01:00
Marc Boucher
ca7cfae9eb [ALSA] hda-codec - Add afg and mfg preset mask
Added afg and mfg preset masks for more finer codec-preset selection.

Signed-off-by: Marc Boucher <marc@linuxant.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:10 +01:00
Marc Boucher
1cfd52bc1a [ALSA] hda-intel - Add ratelimit to timeout messages
Signed-off-by: Marc Boucher <marc@linuxant.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:10 +01:00
Marc Boucher
d2595d86e5 [ALSA] hda-codec - Add a delay after power state change
Added a delay after the power state change as a partial workaround
for 'hda_intel: azx_get_response timeout' problem on Cxt codecs.

Signed-off-by: Marc Boucher <marc@linuxant.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:10 +01:00
Marc Boucher
9f113e0ef4 [ALSA] hda-codec - Add missing input controls for Cxt5047 test model
The input volume/switch elements are missing in Cxt5047 test model.
Also the patch includes some code clean ups.

Signed-off-by: Marc Boucher <marc@linuxant.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:10 +01:00
Marc Boucher
15908c36aa [ALSA] hda-codec - Fix laptop models for Cxt5045
Change laptop models to three different models, laptop-hpsense,
laptop-micsense and laptop-hpmicsense.  The first two correspond to
the old 'laptop' and 'fujitsu' models.
Reassigned the quirk table for the new models.

Signed-off-by: Marc Boucher <marc@linuxant.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:09 +01:00
Matthew Ranostay
b22b48214f [ALSA] hda: Mono mux mixer support
Add support for the mono mux on several 92HD7xxx codecs.
Creates a dynamic mixer for the mux selection.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:09 +01:00
Clemens Ladisch
02f21c9d6b [ALSA] oxygen: add SPDIF loopback control
Add a mixer control for the SPDIF loopback function.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:09 +01:00
Mark Brown
08c8efe692 [ALSA] Fix lockdep warning in ASoC machine probe
Don't take the codec mutex during machine probe until we have registered
with ALSA, fixing a lockdep warning reported by Dmitry Baryshkov.
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>

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>
2008-01-31 17:30:09 +01:00
Clemens Ladisch
c518b35ea2 [ALSA] oxygen: TempoTec HiFier is probably not supported
The TempoTec HiFier has a somwhat different architecture; remove it from
the list of cards that are known to be supported.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:09 +01:00
Takashi Iwai
0de27c10d3 [ALSA] cs5535audio - Fix available sample rates
The available sample rates on CS5535 depend on AC97 codec chip.
Set the additional hw params limit.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:09 +01:00
Clemens Ladisch
c57cccc038 [ALSA] oxygen: optimize snd_pcm_hardware structures
Add one more indirection to the lookup of the snd_pcm_hardware
structures so that we can save the space of the duplicate ones.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:08 +01:00
Clemens Ladisch
7f0b89465b [ALSA] oxygen: add 192 kHz SPDIF input support
Change the oxygen_spdif_input_bits_changed() function so that clock
changes on the SPDIF input are correctly detected.  This means that
sample rates greater than 96 kHz are now supported.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:08 +01:00
Clemens Ladisch
5a256f862c [ALSA] oxygen: fix DAC source register fields
Fix some wrong values for the definitions of the source masks for DACS 1
and 3.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:08 +01:00
Clemens Ladisch
e9d88a8bd9 [ALSA] oxygen: fix control filter
Actually use the template that was maybe changed by the control filter
instead of the original one.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:08 +01:00
Clemens Ladisch
7ef37cd954 [ALSA] oxygen: move model-specific data out of common header
Instead of having model-specific fields in the common struct oxygen, put
them into a private structure that is allocated together with the card
structure.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:08 +01:00
Clemens Ladisch
3b94253bc9 [ALSA] oxygen: reduce SPI clock frequency for AK4396/WM8785
According to the datasheets, the SPI clock cycle must be at least 200 ns
for the AK4396 and the WM8785, so we cannot use the default 160 ns.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:07 +01:00
Clemens Ladisch
71e22a4b77 [ALSA] oxygen: allow more sample rates with WM8785
Allow to record with 32 kHz, 64 kHz, 88.2 kHz and 176.4 kHz with cards
that have a WM8785 ADC.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:07 +01:00
Clemens Ladisch
878ac3ee76 [ALSA] oxygen: add more symbols
Add symbol definitions for the various codecs and GPIO pins.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:07 +01:00
Clemens Ladisch
44fb7aae82 [ALSA] oxygen: remove MIDI autodetection
The MIDI bit in the MISC register is set by default and cannot be used
to detect the presence of a MIDI port.  Instead, add a parameter to the
oxygen_pci_probe() function so that model drivers can specify this.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:06 +01:00
Clemens Ladisch
db2396d495 [ALSA] oxygen: fix pause handling
Use the DMA_PAUSE register for pausing instead of stopping DMA.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:06 +01:00
Clemens Ladisch
c9946b2c80 [ALSA] oxygen: remove magic numbers
Replace some magic numbers with register symbols.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:05 +01:00
Clemens Ladisch
48a8a26dd8 [ALSA] oxygen: update ALSA-Configuration.txt
Add documentation entries for snd-oxygen and snd-virtuoso.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:05 +01:00
Takashi Iwai
6735e5723b [ALSA] emu10k1 - Fix over-sized kmalloc for TLV
Reported by Al Viro:
In copy_tlv(), the size of kmalloc is wrongly calculated.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:05 +01:00
Takashi Iwai
28a0d9df07 [ALSA] hda-intel - Make azx_get_response() a bit more robust
In azx_[rirb_]get_response(), the timeout is checked at the end of the loop.
It's better to be checked just after the check of the RIRB index to avoid
a bogus error with a too long msleep().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:05 +01:00
Takashi Iwai
7cda8ba9f4 [ALSA] ice1712, ice1724 - Code clean up
Clean up ice1712/ice1724 codes.  The board-specific data is allocated
locally in each code instead of having an ungly union in struct ice1712.
Also, fix coding issues in prodigy_hifi.c.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:05 +01:00
Andrew Paprocki
797760ab14 [ALSA] hda_proc - Add a number of new settings to proc codec output
This patch adds additional output to the /proc codec#X info.
The following pieces of information are added to the output:
-  Balanced, L/R swap, trigger, impedance sense pin capabilities
-  Vref pin capabilities
-  Current Vref pin widget control setting
-  Default configuration association, sequence, and misc bit test
-  EAPD/BTL bits conveying balanced mode, EAPD, and L/R swap
-  Power state modified to show state name as well as setting vs actual value
-  GPIO parameter output on Audio Function Group, including enumeration of IO
   pins which are indicated present (Any I and O pins are not output at this
   time)
-  Stripe and L/R swap widget capabilities
-  All digital converter bits: enable, validity, validity config, preemphasis,
   copyright, non-audio, professional, generation level, and content category
-  Converter stream and channel values for in/out widgets
-  SDI select value for in widgets
-  Unsolicited response widget capability tag and enabled bit
-  Delay widget capability value
-  Processing widget capability benign bit and number of coefficients
-  Realtek Define Registers: processing coefficient, coefficient index
[Also, fixed space/tab issues and make codes a bit more readable
  -- Takashi]

Signed-off-by: Andrew Paprocki <andrew@ishiboo.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:04 +01:00
Clemens Ladisch
e005954934 [ALSA] oxygen: fix playback routing
The default playback routing must be 0xe4, not 0xe1; the front and
surround DACs were exchanged.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:04 +01:00
Clemens Ladisch
c2353a0826 [ALSA] oxygen: add register definitions
Add more symbols for registers and register fields.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:04 +01:00
Timur Tabi
4052ce4cbf [ALSA] mpc8610: Add mmap support
Enable mmap support in the MPC8610 ASoC driver.  The driver can use ALSA's
default mmap functionality, it was just not enabled previously.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:04 +01:00
Jiang zhe
f4beee9420 [ALSA] hda-codec - Fix capture source for Cx5045 codec
For codec conexant 5045, I found that the name of 'Capture Source Items'
is different from the name of mixer.
The mixer is:
HDA_CODEC_VOLUME('Ext Mic Playback Volume', 0x17, 0x2, HDA_INPUT),
HDA_CODEC_MUTE('Ext Mic Playback Switch', 0x17, 0x2, HDA_INPUT),
But the capture source item is :
static struct hda_input_mux cxt5045_capture_source = {
	.num_items = 2,
	.items = {
		{ 'IntMic', 0x1 },
		{ 'LineIn', 0x2 },
	}
};
I think that it's better to change the name of capture_source to avoid
misunderstanding.

Signed-off-by: Jiang zhe <zhe.jiang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:04 +01:00
Jiang Zhe
5218c89265 [ALSA] hda-codec - New model for conexant 5045 codec to support benq r55e
The benq r55e laptop have 3 jacks on the front panel.
One for HP, one for Line In and one for Mic In.
This patch implemented a new model to support it.

Signed-off-by: Jiang Zhe <zhe.jiang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:04 +01:00
Takashi Iwai
178532348c [ALSA] Add missing model for HD-audio Cx5045 codec
Added the description of the model fujitsu for Cx5045 codec chip.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:03 +01:00
Julian Scheel
88d1612cc2 [ALSA] ice1724 - Add missing prodigy_hifi.h
Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Konstantin Kletschke <konsti@ku-gbr.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:03 +01:00
Clemens Ladisch
05855ba3f4 [ALSA] oxygen: make the I2S format configurable
Add proper register bit symbols for the I2S format field, and allow card
models to configure the I2S format to be used for the DACs and ADCs.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:03 +01:00
Jaroslav Kysela
b8c5b53e1f [ALSA] ice1712 - fixed midi input for Hoontech C-Ports
See ALSA bug#1846 for more details.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:03 +01:00
Julian Scheel
6b8d6e5518 [ALSA] ICE1724: Added support for Audiotrak Prodigy 7.1 HiFi & HD2, Hercules Fortissimo IV
See ALSA bug#2384 for more details.

Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Konstantin Kletschke <konsti@ku-gbr.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:03 +01:00
Vasily Khoruzhick
da65fd3bf1 [ALSA] hda-codec - remove 11c1:1040 from patch_si3054.c id list
Codec with id 11c1:1040 sitting on hda bus isn't si3054-compatible.
It should be removed from patch_si3054.c id list.
The detailed information
	http://archives.linmodems.org/26457
From: Vasily Khoruzhick <anarsoul@gmail.com>

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:02 +01:00
Takashi Iwai
52987656fb [ALSA] hda-intel - Add workarounds for STAC codecs
Some machines with STAC codecs seem to have problems (e.g. no audible
playback) when the delay in codec-read routine is too short.
I still don't figure out which command sequence causes this problem
(due to lack of test hardware), but it's known that increasing the
delay fixes.  So, added a stupid workaround here temporarily...

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:02 +01:00
Andreas Degert
192b8e3922 [ALSA] hdsp: make Multiface II work again
This device has io_type == 1 (Multiface) and firmware_rev > 0xa
(fixes regression from changeset 5326)

Signed-off-by: Andreas Degert <ad@papyrus-gmbh.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:01 +01:00
T. H. Huth
e70515dd51 [ALSA] snd-powermac: handle dead DMA transfers
This patch provides the snd-powermac sound driver with the ability to handle
dead DMA transfers. If a dead DMA transfer is detected, the driver now sets
up a new DMA transfer to continue with the sound output at the point where the
old transfer died.
This dead DMA transfer handling has become necessary with recent kernels on
certain G4 PowerMacs. Please refer to the following URLs for more information:
 https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3126
 https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/87652
 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=436723
The patch is based on the dead DMA transfer handling code from the old dmasound
driver which can be found in the file sound/oss/dmasound/dmasound_awacs.c in
the Linux source code.

Signed-off-by: T. H. Huth <th.huth@googlemail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:30:01 +01:00