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authorTakashi Iwai <tiwai@suse.de>2008-12-19 09:19:11 -0500
committerTakashi Iwai <tiwai@suse.de>2008-12-19 09:19:11 -0500
commitd4d9cd0338892e7f0d65f8a110473d175535cd5d (patch)
tree6bfc5b0f497f7a9e4ff7391e056a1656b05add68 /Documentation
parent03c6901ea22bbb532586334d5b79941ccf56d5b0 (diff)
ALSA: hda - Add probe_only option
Added probe_only module option to hd-audio driver. This option specifies whether the driver creates and initializes the codec-parser after probing. When this option is set, the driver skips the codec parsing and initialization but gives you proc and other accesses. It's useful to see the initial codec state for debugging. The default of this value is off, so the default behavior is as same as before. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/sound/alsa/ALSA-Configuration.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index a4f3a22caba3..ee45454c50be 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -757,6 +757,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
757 model - force the model name 757 model - force the model name
758 position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF) 758 position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF)
759 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots) 759 probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
760 probe_only - Only probing and no codec initialization (default=off);
761 Useful to check the initial codec status for debugging
760 bdl_pos_adj - Specifies the DMA IRQ timing delay in samples. 762 bdl_pos_adj - Specifies the DMA IRQ timing delay in samples.
761 Passing -1 will make the driver to choose the appropriate 763 Passing -1 will make the driver to choose the appropriate
762 value based on the controller chip. 764 value based on the controller chip.