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author | Takashi Iwai <tiwai@suse.de> | 2007-05-19 17:06:42 +0200 |
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committer | Jaroslav Kysela <perex@suse.cz> | 2007-07-20 11:11:18 +0200 |
commit | 959047431a9e65f6ae25705e77a8e460a1aa04c0 (patch) | |
tree | 635faaf3c82c5eef976fc2077ec7ae331ffdfe7f /Documentation/sound/alsa/ALSA-Configuration.txt | |
parent | [ALSA] hda-codec - Add AD1884 / AD1984 codec support (diff) | |
download | linux-959047431a9e65f6ae25705e77a8e460a1aa04c0.tar.xz linux-959047431a9e65f6ae25705e77a8e460a1aa04c0.zip |
[ALSA] Add description about probe_mask option for snd-hda-intel
Added a brief description about probe_mask option for snd-hda-intel.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'Documentation/sound/alsa/ALSA-Configuration.txt')
-rw-r--r-- | Documentation/sound/alsa/ALSA-Configuration.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index 297ff0de7392..32124bf00498 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -759,6 +759,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. model - force the model name position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size) + probe_mask - Bitmask to probe codecs (default = -1, meaning all slots) single_cmd - Use single immediate commands to communicate with codecs (for debugging only) enable_msi - Enable Message Signaled Interrupt (MSI) (default = off) @@ -966,6 +967,17 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. from the irq. Remember this is a last resort, and should be avoided as much as possible... + MORE NOTES ON "azx_get_response timeout" PROBLEMS: + On some hardwares, you may need to add a proper probe_mask option + to avoid the "azx_get_response timeout" problem above, instead. + This occurs when the access to non-existing or non-working codec slot + (likely a modem one) causes a stall of the communication via HD-audio + bus. You can see which codec slots are probed by enabling + CONFIG_SND_DEBUG_DETECT, or simply from the file name of the codec + proc files. Then limit the slots to probe by probe_mask option. + For example, probe_mask=1 means to probe only the first slot, and + probe_mask=4 means only the third slot. + The power-management is supported. Module snd-hdsp |