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Diffstat (limited to 'Documentation/sound/oss/Opti')
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diff --git a/Documentation/sound/oss/Opti b/Documentation/sound/oss/Opti deleted file mode 100644 index 4cd5d9ab3580..000000000000 --- a/Documentation/sound/oss/Opti +++ /dev/null @@ -1,218 +0,0 @@ -Support for the OPTi 82C931 chip --------------------------------- -Note: parts of this README file apply also to other -cards that use the mad16 driver. - -Some items in this README file are based on features -added to the sound driver after Linux-2.1.91 was out. -By the time of writing this I do not know which official -kernel release will include these features. -Please do not report inconsistencies on older Linux -kernels. - -The OPTi 82C931 is supported in its non-PnP mode. -Usually you do not need to set jumpers, etc. The sound driver -will check the card status and if it is required it will -force the card into a mode in which it can be programmed. - -If you have another OS installed on your computer it is recommended -that Linux and the other OS use the same resources. - -Also, it is recommended that resources specified in /etc/modprobe.d/*.conf -and resources specified in /etc/isapnp.conf agree. - -Compiling the sound driver --------------------------- -I highly recommend that you build a modularized sound driver. -This document does not cover a sound-driver which is built in -the kernel. - -Sound card support should be enabled as a module (chose m). -Answer 'm' for these items: - Generic OPL2/OPL3 FM synthesizer support (CONFIG_SOUND_ADLIB) - Microsoft Sound System support (CONFIG_SOUND_MSS) - Support for OPTi MAD16 and/or Mozart based cards (CONFIG_SOUND_MAD16) - FM synthesizer (YM3812/OPL-3) support (CONFIG_SOUND_YM3812) - -The configuration menu may ask for addresses, IRQ lines or DMA -channels. If the card is used as a module the module loading -options will override these values. - -For the OPTi 931 you can answer 'n' to: - Support MIDI in older MAD16 based cards (requires SB) (CONFIG_SOUND_MAD16_OLDCARD) -If you do need MIDI support in a Mozart or C928 based card you -need to answer 'm' to the above question. In that case you will -also need to answer 'm' to: - '100% Sound Blaster compatibles (SB16/32/64, ESS, Jazz16) support' (CONFIG_SOUND_SB) - -Go on and compile your kernel and modules. Install the modules. Run depmod -a. - -Using isapnptools ------------------ -In most systems with a PnP BIOS you do not need to use isapnp. The -initialization provided by the BIOS is sufficient for the driver -to pick up the card and continue initialization. - -If that fails, or if you have other PnP cards, you need to use isapnp -to initialize the card. -This was tested with isapnptools-1.11 but I recommend that you use -isapnptools-1.13 (or newer). Run pnpdump to dump the information -about your PnP cards. Then edit the resulting file and select -the options of your choice. This file is normally installed as -/etc/isapnp.conf. - -The driver has one limitation with respect to I/O port resources: -IO3 base must be 0x0E0C. Although isapnp allows other ports, this -address is hard-coded into the driver. - -Using kmod and autoloading the sound driver -------------------------------------------- -Config files in '/etc/modprobe.d/' are used as below: - -alias mixer0 mad16 -alias audio0 mad16 -alias midi0 mad16 -alias synth0 opl3 -options sb mad16=1 -options mad16 irq=10 dma=0 dma16=1 io=0x530 joystick=1 cdtype=0 -options opl3 io=0x388 -install mad16 /sbin/modprobe -i mad16 && /sbin/ad1848_mixer_reroute 14 8 15 3 16 6 - -If you have an MPU daughtercard or onboard MPU you will want to add to the -"options mad16" line - eg - -options mad16 irq=5 dma=0 dma16=3 io=0x530 mpu_io=0x330 mpu_irq=9 - -To set the I/O and IRQ of the MPU. - - -Explain: - -alias mixer0 mad16 -alias audio0 mad16 -alias midi0 mad16 -alias synth0 opl3 - -When any sound device is opened the kernel requests auto-loading -of char-major-14. There is a built-in alias that translates this -request to loading the main sound module. - -The sound module in its turn will request loading of a sub-driver -for mixer, audio, midi or synthesizer device. The first 3 are -supported by the mad16 driver. The synth device is supported -by the opl3 driver. - -There is currently no way to autoload the sound device driver -if more than one card is installed. - -options sb mad16=1 - -This is left for historical reasons. If you enable the -config option 'Support MIDI in older MAD16 based cards (requires SB)' -or if you use an older mad16 driver it will force loading of the -SoundBlaster driver. This option tells the SB driver not to look -for a SB card but to wait for the mad16 driver. - -options mad16 irq=10 dma=0 dma16=1 io=0x530 joystick=1 cdtype=0 -options opl3 io=0x388 - -post-install mad16 /sbin/ad1848_mixer_reroute 14 8 15 3 16 6 - -This sets resources and options for the mad16 and opl3 drivers. -I use two DMA channels (only one is required) to enable full duplex. -joystick=1 enables the joystick port. cdtype=0 disables the cd port. -You can also set mpu_io and mpu_irq in the mad16 options for the -uart401 driver. - -This tells modprobe to run /sbin/ad1848_mixer_reroute after -mad16 is successfully loaded and initialized. The source -for ad1848_mixer_reroute is appended to the end of this readme -file. It is impossible for the sound driver to know the actual -connections to the mixer. The 3 inputs intended for cd, synth -and line-in are mapped to the generic inputs line1, line2 and -line3. This program reroutes these mixer channels to their -right names (note the right mapping depends on the actual sound -card that you use). -The numeric parameters mean: - 14=line1 8=cd - reroute line1 to the CD input. - 15=line2 3=synth - reroute line2 to the synthesizer input. - 16=line3 6=line - reroute line3 to the line input. -For reference on other input names look at the file -/usr/include/linux/soundcard.h. - -Using a joystick ------------------ -You must enable a joystick in the mad16 options. (also -in /etc/isapnp.conf if you use it). -Tested with regular analog joysticks. - -A CDROM drive connected to the sound card ------------------------------------------ -The 82C931 chip has support only for secondary ATAPI cdrom. -(cdtype=8). Loading the mad16 driver resets the C931 chip -and if a cdrom was already mounted it may cause a complete -system hang. Do not use the sound card if you have an alternative. -If you do use the sound card it is important that you load -the mad16 driver (use "modprobe mad16" to prevent auto-unloading) -before the cdrom is accessed the first time. - -Using the sound driver built-in to the kernel may help here, but... -Most new systems have a PnP BIOS and also two IDE controllers. -The IDE controller on the sound card may be needed only on older -systems (which have only one IDE controller) but these systems -also do not have a PnP BIOS - requiring isapnptools and a modularized -driver. - -Known problems --------------- -1. See the section on "A CDROM drive connected to the sound card". - -2. On my system the codec cannot capture companded sound samples. - (eg., recording from /dev/audio). When any companded capture is - requested I get stereo-16 bit samples instead. Playback of - companded samples works well. Apparently this problem is not common - to all C931 based cards. I do not know how to identify cards that - have this problem. - -Source for ad1848_mixer_reroute.c ---------------------------------- -#include <stdio.h> -#include <fcntl.h> -#include <linux/soundcard.h> - -static char *mixer_names[SOUND_MIXER_NRDEVICES] = - SOUND_DEVICE_LABELS; - -int -main(int argc, char **argv) { - int val, from, to; - int i, fd; - - fd = open("/dev/mixer", O_RDWR); - if(fd < 0) { - perror("/dev/mixer"); - return 1; - } - - for(i = 2; i < argc; i += 2) { - from = atoi(argv[i-1]); - to = atoi(argv[i]); - - if(to == SOUND_MIXER_NONE) - fprintf(stderr, "%s: turning off mixer %s\n", - argv[0], mixer_names[to]); - else - fprintf(stderr, "%s: rerouting mixer %s to %s\n", - argv[0], mixer_names[from], mixer_names[to]); - - val = from << 8 | to; - - if(ioctl(fd, SOUND_MIXER_PRIVATE2, &val)) { - perror("AD1848 mixer reroute"); - return 1; - } - } - - return 0; -} - |
