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authorJiri Kosina <jkosina@suse.cz>2012-04-08 23:48:52 +0400
committerJiri Kosina <jkosina@suse.cz>2012-04-08 23:48:52 +0400
commite75d660672ddd11704b7f0fdb8ff21968587b266 (patch)
treeccb9c107744c10b553c0373e450bee3971d16c00 /Documentation/sound/alsa/ALSA-Configuration.txt
parent61282f37927143e45b03153f3e7b48d6b702147a (diff)
parent0034102808e0dbbf3a2394b82b1bb40b5778de9e (diff)
downloadlinux-e75d660672ddd11704b7f0fdb8ff21968587b266.tar.xz
Merge branch 'master' into for-next
Merge with latest Linus' tree, as I have incoming patches that fix code that is newer than current HEAD of for-next. Conflicts: drivers/net/ethernet/realtek/r8169.c
Diffstat (limited to 'Documentation/sound/alsa/ALSA-Configuration.txt')
-rw-r--r--Documentation/sound/alsa/ALSA-Configuration.txt18
1 files changed, 12 insertions, 6 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 12e3a0fb9bec..8c16d50f6cb6 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -860,7 +860,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
[Multiple options for each card instance]
model - force the model name
- position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF)
+ position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF,
+ 3 = VIACOMBO, 4 = COMBO)
probe_mask - Bitmask to probe codecs (default = -1, meaning all slots)
When the bit 8 (0x100) is set, the lower 8 bits are used
as the "fixed" codec slots; i.e. the driver probes the
@@ -925,6 +926,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
(Usually SD_LPIB register is more accurate than the
position buffer.)
+ position_fix=3 is specific to VIA devices. The position
+ of the capture stream is checked from both LPIB and POSBUF
+ values. position_fix=4 is a combination mode, using LPIB
+ for playback and POSBUF for capture.
+
NB: If you get many "azx_get_response timeout" messages at
loading, it's likely a problem of interrupts (e.g. ACPI irq
routing). Try to boot with options like "pci=noacpi". Also, you
@@ -2038,7 +2044,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Install the necessary firmware files in alsa-firmware package.
When no hotplug fw loader is available, you need to load the
firmware via vxloader utility in alsa-tools package. To invoke
- vxloader automatically, add the following to /etc/modprobe.conf
+ vxloader automatically, add the following to /etc/modprobe.d/alsa.conf
install snd-vx222 /sbin/modprobe --first-time -i snd-vx222 && /usr/bin/vxloader
@@ -2162,10 +2168,10 @@ corresponds to the card index of ALSA. Usually, define this
as the same card module.
An example configuration for a single emu10k1 card is like below:
------ /etc/modprobe.conf
+----- /etc/modprobe.d/alsa.conf
alias snd-card-0 snd-emu10k1
alias sound-slot-0 snd-emu10k1
------ /etc/modprobe.conf
+----- /etc/modprobe.d/alsa.conf
The available number of auto-loaded sound cards depends on the module
option "cards_limit" of snd module. As default it's set to 1.
@@ -2178,7 +2184,7 @@ cards is kept consistent.
An example configuration for two sound cards is like below:
------ /etc/modprobe.conf
+----- /etc/modprobe.d/alsa.conf
# ALSA portion
options snd cards_limit=2
alias snd-card-0 snd-interwave
@@ -2188,7 +2194,7 @@ options snd-ens1371 index=1
# OSS/Free portion
alias sound-slot-0 snd-interwave
alias sound-slot-1 snd-ens1371
------ /etc/modprobe.conf
+----- /etc/modprobe.d/alsa.conf
In this example, the interwave card is always loaded as the first card
(index 0) and ens1371 as the second (index 1).