diff options
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa/ALSA-Configuration.txt | 106 |
1 files changed, 70 insertions, 36 deletions
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index f626f4a9a61c..a7fc75f53bbe 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -75,7 +75,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. adsp_map - PCM device number maps assigned to the 2st OSS device. - Default: 1 nonblock_open - - Don't block opening busy PCM devices. + - Don't block opening busy PCM devices. Default: 1 For example, when dsp_map=2, /dev/dsp will be mapped to PCM #2 of the card #0. Similarly, when adsp_map=0, /dev/adsp will be mapped @@ -199,15 +199,20 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. Module snd-atiixp ----------------- - Module for ATI IXP 150/200/250 AC97 controllers. + Module for ATI IXP 150/200/250/400 AC97 controllers. - ac97_clock - AC'97 clock (defalut = 48000) + ac97_clock - AC'97 clock (default = 48000) ac97_quirk - AC'97 workaround for strange hardware - See the description of intel8x0 module for details. + See "AC97 Quirk Option" section below. spdif_aclink - S/PDIF transfer over AC-link (default = 1) This module supports up to 8 cards and autoprobe. + ATI IXP has two different methods to control SPDIF output. One is + over AC-link and another is over the "direct" SPDIF output. The + implementation depends on the motherboard, and you'll need to + choose the correct one via spdif_aclink module option. + Module snd-atiixp-modem ----------------------- @@ -240,7 +245,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. The hardware EQ hardware and SPDIF is only present in the Vortex2 and Advantage. - Note: Some ALSA mixer applicactions don't handle the SPDIF samplerate + Note: Some ALSA mixer applications don't handle the SPDIF sample rate control correctly. If you have problems regarding this, try another ALSA compliant mixer (alsamixer works). @@ -312,7 +317,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. mpu_port - 0x300,0x310,0x320,0x330, 0 = disable (default) fm_port - 0x388 (default), 0 = disable (default) - soft_ac3 - Sofware-conversion of raw SPDIF packets (model 033 only) + soft_ac3 - Software-conversion of raw SPDIF packets (model 033 only) (default = 1) joystick_port - Joystick port address (0 = disable, 1 = auto-detect) @@ -394,7 +399,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/ CS4624/CS4630/CS4280 PCI chips. - external_amp - Force to enable external amplifer. + external_amp - Force to enable external amplifier. thinkpad - Force to enable Thinkpad's CLKRUN control. mmap_valid - Support OSS mmap mode (default = 0). @@ -630,7 +635,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. VIA VT8251/VT8237A model - force the model name - position_fix - Fix DMA pointer (0 = FIFO size, 1 = none, 2 = POSBUF) + position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size) Module supports up to 8 cards. @@ -666,6 +671,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. allout 5-jack in back, 2-jack in front, SPDIF out auto auto-config reading BIOS (default) + If the default configuration doesn't work and one of the above + matches with your device, report it together with the PCI + subsystem ID (output of "lspci -nv") to ALSA BTS or alsa-devel + ML (see the section "Links and Addresses"). + 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 @@ -793,18 +803,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. ac97_clock - AC'97 codec clock base (0 = auto-detect) ac97_quirk - AC'97 workaround for strange hardware - The following strings are accepted: - default = don't override the default setting - disable = disable the quirk - hp_only = use headphone control as master - swap_hp = swap headphone and master controls - swap_surround = swap master and surround controls - ad_sharing = for AD1985, turn on OMS bit and use headphone - alc_jack = for ALC65x, turn on the jack sense mode - inv_eapd = inverted EAPD implementation - mute_led = bind EAPD bit for turning on/off mute LED - For backward compatibility, the corresponding integer - value -1, 0, ... are accepted, too. + See "AC97 Quirk Option" section below. buggy_irq - Enable workaround for buggy interrupts on some motherboards (default off) @@ -818,13 +817,6 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. motherboard has these devices, use the ns558 or snd-mpu401 modules, respectively. - The ac97_quirk option is used to enable/override the workaround - for specific devices. Some hardware have swapped output pins - between Master and Headphone, or Surround. The driver provides - the auto-detection of known problematic devices, but some might - be unknown or wrongly detected. In such a case, pass the proper - value with this option. - The power-management is supported. Module snd-intel8x0m @@ -976,7 +968,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. with machines with other (most likely CS423x or OPL3SAx) chips, even though the device is detected in lspci. In such a case, try other drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnP - but some doesn't have ISA PnP. You'll need to speicfy isapnp=0 + but some doesn't have ISA PnP. You'll need to specify isapnp=0 and proper hardware parameters in the case without ISA PnP. Note: some laptops need a workaround for AC97 RESET. For the @@ -1312,7 +1304,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. channels [VIA8233/C, 8235, 8237 only] ac97_quirk - AC'97 workaround for strange hardware - See the description of intel8x0 module for details. + See "AC97 Quirk Option" section below. Module supports autoprobe and multiple bus-master chips (max 8). @@ -1337,16 +1329,17 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. "lspci -nv"). 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 + usually for old motherboards. The correct implemented 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. In any cases, please let us know the result and the - subsystem vendor/device ids. + subsystem vendor/device ids. See "Links and Addresses" + below. Note: for the MPU401 on VIA823x, use snd-mpu401 driver - additonally. The mpu_port option is for VIA686 chips only. + additionally. The mpu_port option is for VIA686 chips only. Module snd-via82xx-modem ------------------------ @@ -1408,8 +1401,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. Module supports up to 8 cards. The module is compiled only when PCMCIA is supported on kernel. - To activate the driver via the card manager, you'll need to set - up /etc/pcmcia/vxpocket.conf. See the sound/pcmcia/vx/vxpocket.c. + With the older 2.6.x kernel, to activate the driver via the card + manager, you'll need to set up /etc/pcmcia/vxpocket.conf. See the + sound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires no + longer require a config file. When the driver is compiled as a module and the hotplug firmware is supported, the firmware data is loaded via hotplug automatically. @@ -1421,6 +1416,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. Note: the driver is build only when CONFIG_ISA is set. + Note2: snd-vxp440 driver is merged to snd-vxpocket driver since + ALSA 1.0.10. + Module snd-ymfpci ----------------- @@ -1446,6 +1444,37 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. Note: the driver is build only when CONFIG_ISA is set. +AC97 Quirk Option +================= + +The ac97_quirk option is used to enable/override the workaround for +specific devices on drivers for on-board AC'97 controllers like +snd-intel8x0. Some hardware have swapped output pins between Master +and Headphone, or Surround (thanks to confusion of AC'97 +specifications from version to version :-) + +The driver provides the auto-detection of known problematic devices, +but some might be unknown or wrongly detected. In such a case, pass +the proper value with this option. + +The following strings are accepted: + - default Don't override the default setting + - disable Disable the quirk + - hp_only Bind Master and Headphone controls as a single control + - swap_hp Swap headphone and master controls + - swap_surround Swap master and surround controls + - ad_sharing For AD1985, turn on OMS bit and use headphone + - alc_jack For ALC65x, turn on the jack sense mode + - inv_eapd Inverted EAPD implementation + - mute_led Bind EAPD bit for turning on/off mute LED + +For backward compatibility, the corresponding integer value -1, 0, +... are accepted, too. + +For example, if "Master" volume control has no effect on your device +but only "Headphone" does, pass ac97_quirk=hp_only module option. + + Configuring Non-ISAPNP Cards ============================ @@ -1599,9 +1628,14 @@ commands to the snd-page-alloc driver: use. -Links -===== +Links and Addresses +=================== ALSA project homepage http://www.alsa-project.org + ALSA Bug Tracking System + https://bugtrack.alsa-project.org/bugs/ + + ALSA Developers ML + mailto:alsa-devel@lists.sourceforge.net |