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-rw-r--r--Documentation/sound/alsa/ALSA-Configuration.txt127
1 files changed, 111 insertions, 16 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 71ef0498d5e..104a994b828 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -615,9 +615,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Module snd-hda-intel
--------------------
- Module for Intel HD Audio (ICH6, ICH6M, ICH7)
+ Module for Intel HD Audio (ICH6, ICH6M, ICH7), ATI SB450,
+ VIA VT8251/VT8237A
model - force the model name
+ position_fix - Fix DMA pointer (0 = FIFO size, 1 = none, 2 = POSBUF)
Module supports up to 8 cards.
@@ -635,6 +637,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
5stack 5-jack in back, 2-jack in front
5stack-digout 5-jack in back, 2-jack in front, a SPDIF out
w810 3-jack
+ z71v 3-jack (HP shared SPDIF)
+ asus 3-jack
+ uniwill 3-jack
+ F1734 2-jack
CMI9880
minimal 3-jack in back
@@ -642,6 +648,15 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
full 6-jack in back, 2-jack in front
full_dig 6-jack in back, 2-jack in front, SPDIF I/O
allout 5-jack in back, 2-jack in front, SPDIF out
+ auto auto-config reading BIOS (default)
+
+ Note 2: If you get click noises on output, try the module option
+ position_fix=1 or 2. position_fix=1 will use the SD_LPIB
+ register value without FIFO size correction as the current
+ DMA pointer. position_fix=2 will make the driver to use
+ the position buffer instead of reading SD_LPIB register.
+ (Usually SD_LPLIB register is more accurate than the
+ position buffer.)
Module snd-hdsp
---------------
@@ -660,7 +675,19 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
module did formerly. It will allocate the buffers in advance
when any HDSP cards are found. To make the buffer
allocation sure, load snd-page-alloc module in the early
- stage of boot sequence.
+ stage of boot sequence. See "Early Buffer Allocation"
+ section.
+
+ Module snd-hdspm
+ ----------------
+
+ Module for RME HDSP MADI board.
+
+ precise_ptr - Enable precise pointer, or disable.
+ line_outs_monitor - Send playback streams to analog outs by default.
+ enable_monitor - Enable Analog Out on Channel 63/64 by default.
+
+ See hdspm.txt for details.
Module snd-ice1712
------------------
@@ -677,15 +704,19 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
* TerraTec EWS 88D
* TerraTec EWX 24/96
* TerraTec DMX 6Fire
+ * TerraTec Phase 88
* Hoontech SoundTrack DSP 24
* Hoontech SoundTrack DSP 24 Value
* Hoontech SoundTrack DSP 24 Media 7.1
+ * Event Electronics, EZ8
* Digigram VX442
+ * Lionstracs, Mediastaton
model - Use the given board model, one of the following:
delta1010, dio2496, delta66, delta44, audiophile, delta410,
delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,
- dmx6fire, dsp24, dsp24_value, dsp24_71, ez8
+ dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,
+ phase88, mediastation
omni - Omni I/O support for MidiMan M-Audio Delta44/66
cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever)
in msec resolution, default value is 500 (0.5 sec)
@@ -694,20 +725,46 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
is not used with all Envy24 based cards (for example in the MidiMan Delta
serie).
+ Note: The supported board is detected by reading EEPROM or PCI
+ SSID (if EEPROM isn't available). You can override the
+ model by passing "model" module option in case that the
+ driver isn't configured properly or you want to try another
+ type for testing.
+
Module snd-ice1724
------------------
- Module for Envy24HT (VT/ICE1724) based PCI sound cards.
+ Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.
* MidiMan M Audio Revolution 7.1
* AMP Ltd AUDIO2000
- * TerraTec Aureon Sky-5.1, Space-7.1
+ * TerraTec Aureon 5.1 Sky
+ * TerraTec Aureon 7.1 Space
+ * TerraTec Aureon 7.1 Universe
+ * TerraTec Phase 22
+ * TerraTec Phase 28
+ * AudioTrak Prodigy 7.1
+ * AudioTrak Prodigy 192
+ * Pontis MS300
+ * Albatron K8X800 Pro II
+ * Chaintech ZNF3-150
+ * Chaintech ZNF3-250
+ * Chaintech 9CJS
+ * Chaintech AV-710
+ * Shuttle SN25P
model - Use the given board model, one of the following:
- revo71, amp2000, prodigy71, aureon51, aureon71,
- k8x800
+ revo71, amp2000, prodigy71, prodigy192, aureon51,
+ aureon71, universe, k8x800, phase22, phase28, ms300,
+ av710
Module supports up to 8 cards and autoprobe.
+ Note: The supported board is detected by reading EEPROM or PCI
+ SSID (if EEPROM isn't available). You can override the
+ model by passing "model" module option in case that the
+ driver isn't configured properly or you want to try another
+ type for testing.
+
Module snd-intel8x0
-------------------
@@ -1026,7 +1083,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
module did formerly. It will allocate the buffers in advance
when any RME9652 cards are found. To make the buffer
allocation sure, load snd-page-alloc module in the early
- stage of boot sequence.
+ stage of boot sequence. See "Early Buffer Allocation"
+ section.
Module snd-sa11xx-uda1341 (on arm only)
---------------------------------------
@@ -1211,16 +1269,18 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
------------------
Module for AC'97 motherboards based on VIA 82C686A/686B, 8233,
- 8233A, 8233C, 8235 (south) bridge.
+ 8233A, 8233C, 8235, 8237 (south) bridge.
mpu_port - 0x300,0x310,0x320,0x330, otherwise obtain BIOS setup
[VIA686A/686B only]
joystick - Enable joystick (default off) [VIA686A/686B only]
ac97_clock - AC'97 codec clock base (default 48000Hz)
dxs_support - support DXS channels,
- 0 = auto (defalut), 1 = enable, 2 = disable,
- 3 = 48k only, 4 = no VRA
- [VIA8233/C,8235 only]
+ 0 = auto (default), 1 = enable, 2 = disable,
+ 3 = 48k only, 4 = no VRA, 5 = enable any sample
+ rate and different sample rates on different
+ channels
+ [VIA8233/C, 8235, 8237 only]
ac97_quirk - AC'97 workaround for strange hardware
See the description of intel8x0 module for details.
@@ -1232,18 +1292,23 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
default value 1.4. Then the interrupt number will be
assigned under 15. You might also upgrade your BIOS.
- Note: VIA8233/5 (not VIA8233A) can support DXS (direct sound)
+ Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)
channels as the first PCM. On these channels, up to 4
- streams can be played at the same time.
+ streams can be played at the same time, and the controller
+ can perform sample rate conversion with separate rates for
+ each channel.
As default (dxs_support = 0), 48k fixed rate is chosen
except for the known devices since the output is often
noisy except for 48k on some mother boards due to the
bug of BIOS.
- Please try once dxs_support=1 and if it works on other
+ Please try once dxs_support=5 and if it works on other
sample rates (e.g. 44.1kHz of mp3 playback), please let us
know the PCI subsystem vendor/device id's (output of
"lspci -nv").
- If it doesn't work, try dxs_support=4. If it still doesn't
+ If dxs_support=5 does not work, try dxs_support=4; if it
+ doesn't work too, try dxs_support=1. (dxs_support=1 is
+ usually for old motherboards. The correct implementated
+ board should work with 4 or 5.) If it still doesn't
work and the default setting is ok, dxs_support=3 is the
right choice. If the default setting doesn't work at all,
try dxs_support=2 to disable the DXS channels.
@@ -1497,6 +1562,36 @@ Proc interfaces (/proc/asound)
echo "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss
+Early Buffer Allocation
+=======================
+
+Some drivers (e.g. hdsp) require the large contiguous buffers, and
+sometimes it's too late to find such spaces when the driver module is
+actually loaded due to memory fragmentation. You can pre-allocate the
+PCM buffers by loading snd-page-alloc module and write commands to its
+proc file in prior, for example, in the early boot stage like
+/etc/init.d/*.local scripts.
+
+Reading the proc file /proc/drivers/snd-page-alloc shows the current
+usage of page allocation. In writing, you can send the following
+commands to the snd-page-alloc driver:
+
+ - add VENDOR DEVICE MASK SIZE BUFFERS
+
+ VENDOR and DEVICE are PCI vendor and device IDs. They take
+ integer numbers (0x prefix is needed for the hex).
+ MASK is the PCI DMA mask. Pass 0 if not restricted.
+ SIZE is the size of each buffer to allocate. You can pass
+ k and m suffix for KB and MB. The max number is 16MB.
+ BUFFERS is the number of buffers to allocate. It must be greater
+ than 0. The max number is 4.
+
+ - erase
+
+ This will erase the all pre-allocated buffers which are not in
+ use.
+
+
Links
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