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675f25d4d3
linux/sound/pci
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Takashi Iwai 675f25d4d3 ALSA: hda - Add bdl_pos_adj option 
Added a new option, bdl_pos_adj, to adjust the delay of IRQ-wakeup
timing.

Most HD-audio hardwares have a problem that a BDL IRQ is issued before
actually the data and the DMA pointer are updated.
We have already a mechanism to force to delay snd_pcm_period_elapsed()
calls via workq, but this costs much CPU, and typically the delay is
within one sample.  Thus, it's more clever to adjust the BDL entries
instead.

The new option adds the size of the delay in frames.  As default,
it's set to 1 -- that is, one sample delay.  Even the hardware is
really correct, one sample delay is relatively harmless in comparison
with reporting wrong positions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-06-13 16:30:20 +02:00
..
ac97 [ALSA] ac97 - Fix power_save option value as time-out 2008-06-13 16:28:31 +02:00
ali5451 [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
au88x0 [ALSA] remove CVS keywords 2008-05-27 15:56:20 +02:00
aw2 ALSA: aw2 - Fix Oops at initialization 2008-06-23 12:06:23 +02:00
ca0106 [ALSA] Fix possible races at free_irq in PCI drivers 2008-04-24 12:00:41 +02:00
cs46xx [ALSA] Fix possible races at free_irq in PCI drivers 2008-04-24 12:00:41 +02:00
cs5535audio [ALSA] fix cs5535 section mismatch 2008-01-31 17:30:12 +01:00
echoaudio [ALSA] Fix possible races at free_irq in PCI drivers 2008-04-24 12:00:41 +02:00
emu10k1 ALSA: emu10k1 - Fix page allocation with GFP_DMA 2008-06-13 16:29:38 +02:00
hda ALSA: hda - Add bdl_pos_adj option 2008-06-13 16:30:20 +02:00
ice1712 [ALSA] ice1724: fix MIDI 2008-05-20 14:22:44 +02:00
korg1212 [ALSA] Fix possible races at free_irq in PCI drivers 2008-04-24 12:00:41 +02:00
mixart [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
nm256 [ALSA] Fix possible races at free_irq in PCI drivers 2008-04-24 12:00:41 +02:00
oxygen [ALSA] virtuoso: restrict period time to less than 10 s 2008-05-19 13:19:17 +02:00
pcxhr [ALSA] Replace CONFIG_SND_DEBUG_DETECT with CONFIG_SND_DEBUG_VERBOSE 2008-05-27 15:56:21 +02:00
riptide [ALSA] sound: riptide.c fix shadowed variable warnings 2008-04-24 12:00:18 +02:00
rme9652 [ALSA] sound/pci/rme9652/hdspm.c: stop inlining largish static functions 2008-04-24 12:00:33 +02:00
trident [ALSA] trident - clean up obsolete synth codes 2008-05-30 09:48:33 +02:00
vx222 [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
ymfpci [ALSA] ymfpci - Fix race at removal 2008-04-24 12:00:30 +02:00
ad1889.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
ad1889.h [ALSA] ad1889: add AD1889 driver 2005-09-12 10:40:17 +02:00
ak4531_codec.c [ALSA] Make ak4531 local to ens1370 driver 2008-05-30 09:26:09 +02:00
als300.c [ALSA] sound: replace remaining __FUNCTION__ occurences 2008-04-24 12:00:20 +02:00
als4000.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
atiixp_modem.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
atiixp.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
azt3328.c [ALSA] PCI168 snd-azt3328 Linux driver: another huge update 2008-05-19 13:19:19 +02:00
azt3328.h [ALSA] PCI168 snd-azt3328 Linux driver: another huge update 2008-05-19 13:19:19 +02:00
bt87x.c [ALSA] bt87X: fix freeing of shared interrupt 2008-02-22 14:20:09 -08:00
cmipci.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
cs4281.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
cs5530.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
ens1370.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
ens1371.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
es1938.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
es1968.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
fm801.c [ALSA] sound: fm801.c fix shadowed variable warning 2008-04-24 12:00:16 +02:00
intel8x0.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
intel8x0m.c [ALSA] Fix possible races at free_irq in PCI drivers 2008-04-24 12:00:41 +02:00
Kconfig [ALSA] Fix AC97 kconfig items 2008-05-27 15:56:20 +02:00
maestro3.c [ALSA] maestro3: Fix hw volume on HP OmniBook 2008-06-06 11:54:18 +02:00
Makefile [ALSA] Make ak4531 local to ens1370 driver 2008-05-30 09:26:09 +02:00
rme32.c [ALSA] sound: rme32.c fix integer as NULL pointer warning 2008-04-24 12:00:16 +02:00
rme96.c [ALSA] sound: rme96.c fix integer as NULL pointer warning 2008-04-24 12:00:17 +02:00
sis7019.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
sis7019.h [ALSA] sis7019: support the SiS 7019 Audio Accelerator 2008-01-31 17:29:36 +01:00
sonicvibes.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
via82xx_modem.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00
via82xx.c [ALSA] Fix synchronize_irq() bugs, redundancies 2008-04-24 12:00:40 +02:00