588 lines
13 KiB
C
588 lines
13 KiB
C
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/*
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* sound/sb_mixer.c
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*
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* The low level mixer driver for the SoundBlaster Pro and SB16 cards.
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*
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* Copyright by Hannu Savolainen 1994
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Modified:
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* Hunyue Yau Jan 6 1994
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* Added code to support the Sound Galaxy NX Pro mixer.
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*
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*/
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#include "sound_config.h"
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#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_SB) && !defined(EXCLUDE_SBPRO)
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#define __SB_MIXER_C__
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#include "sb.h"
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#include "sb_mixer.h"
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#undef SB_TEST_IRQ
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extern int sbc_base;
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extern int sbc_major;
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extern int Jazz16_detected;
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static int mixer_initialized = 0;
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static int supported_rec_devices;
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static int supported_devices;
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static int recmask = 0;
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static int mixer_model;
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static int mixer_caps;
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static mixer_tab *iomap;
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void
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sb_setmixer (unsigned int port, unsigned int value)
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{
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unsigned long flags;
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DISABLE_INTR (flags);
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OUTB ((unsigned char) (port & 0xff), MIXER_ADDR); /*
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* Select register
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*/
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tenmicrosec ();
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OUTB ((unsigned char) (value & 0xff), MIXER_DATA);
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tenmicrosec ();
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RESTORE_INTR (flags);
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}
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int
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sb_getmixer (unsigned int port)
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{
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int val;
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unsigned long flags;
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DISABLE_INTR (flags);
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OUTB ((unsigned char) (port & 0xff), MIXER_ADDR); /*
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* Select register
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*/
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tenmicrosec ();
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val = INB (MIXER_DATA);
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tenmicrosec ();
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RESTORE_INTR (flags);
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return val;
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}
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void
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sb_mixer_set_stereo (int mode)
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{
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if (!mixer_initialized)
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return;
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sb_setmixer (OUT_FILTER, ((sb_getmixer (OUT_FILTER) & ~STEREO_DAC)
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| (mode ? STEREO_DAC : MONO_DAC)));
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}
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/*
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* Returns:
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* 0 No mixer detected.
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* 1 Only a plain Sound Blaster Pro style mixer detected.
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* 2 The Sound Galaxy NX Pro mixer detected.
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*/
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static int
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detect_mixer (void)
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{
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#ifdef __SGNXPRO__
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int oldbass, oldtreble;
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#endif
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int retcode = 1;
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/*
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* Detect the mixer by changing parameters of two volume channels. If the
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* values read back match with the values written, the mixer is there (is
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* it?)
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*/
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sb_setmixer (FM_VOL, 0xff);
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sb_setmixer (VOC_VOL, 0x33);
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if (sb_getmixer (FM_VOL) != 0xff)
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return 0; /*
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* No match
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*/
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if (sb_getmixer (VOC_VOL) != 0x33)
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return 0;
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#ifdef __SGNXPRO__
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/* Attempt to detect the SG NX Pro by check for valid bass/treble
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* registers.
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*/
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oldbass = sb_getmixer (BASS_LVL);
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oldtreble = sb_getmixer (TREBLE_LVL);
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sb_setmixer (BASS_LVL, 0xaa);
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sb_setmixer (TREBLE_LVL, 0x55);
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if ((sb_getmixer (BASS_LVL) != 0xaa) ||
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(sb_getmixer (TREBLE_LVL) != 0x55))
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{
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retcode = 1; /* 1 == Only SB Pro detected */
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}
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else
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retcode = 2; /* 2 == SG NX Pro detected */
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/* Restore register in either case since SG NX Pro has EEPROM with
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* 'preferred' values stored.
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*/
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sb_setmixer (BASS_LVL, oldbass);
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sb_setmixer (TREBLE_LVL, oldtreble);
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/*
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* If the SB version is 3.X (SB Pro), assume we have a SG NX Pro 16.
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* In this case it's good idea to disable the Disney Sound Source
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* compatibility mode. It's useless and just causes noise every time the
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* LPT-port is accessed.
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*
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* Also place the card into WSS mode.
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*/
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if (sbc_major == 3)
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{
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OUTB (0x01, sbc_base + 0x1c);
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OUTB (0x00, sbc_base + 0x1a);
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}
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#endif
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return retcode;
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}
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static void
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change_bits (unsigned char *regval, int dev, int chn, int newval)
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{
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unsigned char mask;
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int shift;
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mask = (1 << (*iomap)[dev][chn].nbits) - 1;
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newval = (int) ((newval * mask) + 50) / 100; /*
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* Scale it
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*/
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shift = (*iomap)[dev][chn].bitoffs - (*iomap)[dev][LEFT_CHN].nbits + 1;
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*regval &= ~(mask << shift); /*
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* Filter out the previous value
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*/
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*regval |= (newval & mask) << shift; /*
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* Set the new value
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*/
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}
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static int
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sb_mixer_get (int dev)
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{
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if (!((1 << dev) & supported_devices))
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return RET_ERROR (EINVAL);
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return levels[dev];
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}
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#ifdef JAZZ16
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static char smw_mix_regs[] = /* Left mixer registers */
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{
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0x0b, /* SOUND_MIXER_VOLUME */
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0x0d, /* SOUND_MIXER_BASS */
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0x0d, /* SOUND_MIXER_TREBLE */
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0x05, /* SOUND_MIXER_SYNTH */
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0x09, /* SOUND_MIXER_PCM */
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0x00, /* SOUND_MIXER_SPEAKER */
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0x03, /* SOUND_MIXER_LINE */
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0x01, /* SOUND_MIXER_MIC */
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0x07, /* SOUND_MIXER_CD */
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0x00, /* SOUND_MIXER_IMIX */
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0x00, /* SOUND_MIXER_ALTPCM */
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0x00, /* SOUND_MIXER_RECLEV */
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0x00, /* SOUND_MIXER_IGAIN */
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0x00, /* SOUND_MIXER_OGAIN */
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0x00, /* SOUND_MIXER_LINE1 */
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0x00, /* SOUND_MIXER_LINE2 */
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0x00 /* SOUND_MIXER_LINE3 */
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};
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static void
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smw_mixer_init (void)
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{
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int i;
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sb_setmixer (0x00, 0x18); /* Mute unused (Telephone) line */
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sb_setmixer (0x10, 0x38); /* Config register 2 */
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supported_devices = 0;
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for (i = 0; i < sizeof (smw_mix_regs); i++)
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if (smw_mix_regs[i] != 0)
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supported_devices |= (1 << i);
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supported_rec_devices = supported_devices &
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~(SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_PCM |
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SOUND_MASK_VOLUME);
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}
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static int
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smw_mixer_set (int dev, int value)
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{
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int left = value & 0x000000ff;
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int right = (value & 0x0000ff00) >> 8;
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int reg, val;
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if (left > 100)
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left = 100;
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if (right > 100)
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right = 100;
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if (dev > 31)
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return RET_ERROR (EINVAL);
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if (!(supported_devices & (1 << dev))) /* Not supported */
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return RET_ERROR (EINVAL);
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switch (dev)
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{
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case SOUND_MIXER_VOLUME:
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sb_setmixer (0x0b, 96 - (96 * left / 100)); /* 96=mute, 0=max */
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sb_setmixer (0x0c, 96 - (96 * right / 100));
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break;
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case SOUND_MIXER_BASS:
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case SOUND_MIXER_TREBLE:
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levels[dev] = left | (right << 8);
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/* Set left bass and treble values */
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val = ((levels[SOUND_MIXER_TREBLE] & 0xff) * 16 / 100) << 4;
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val |= ((levels[SOUND_MIXER_BASS] & 0xff) * 16 / 100) & 0x0f;
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sb_setmixer (0x0d, val);
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/* Set right bass and treble values */
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val = (((levels[SOUND_MIXER_TREBLE] >> 8) & 0xff) * 16 / 100) << 4;
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val |= (((levels[SOUND_MIXER_BASS] >> 8) & 0xff) * 16 / 100) & 0x0f;
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sb_setmixer (0x0e, val);
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break;
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default:
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reg = smw_mix_regs[dev];
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if (reg == 0)
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return RET_ERROR (EINVAL);
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sb_setmixer (reg, (24 - (24 * left / 100)) | 0x20); /* 24=mute, 0=max */
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sb_setmixer (reg + 1, (24 - (24 * right / 100)) | 0x40);
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}
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levels[dev] = left | (right << 8);
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return left | (right << 8);
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}
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#endif
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static int
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sb_mixer_set (int dev, int value)
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{
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int left = value & 0x000000ff;
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int right = (value & 0x0000ff00) >> 8;
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int regoffs;
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unsigned char val;
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#ifdef JAZZ16
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if (Jazz16_detected == 2)
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return smw_mixer_set (dev, value);
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#endif
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if (left > 100)
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left = 100;
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if (right > 100)
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right = 100;
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if (dev > 31)
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return RET_ERROR (EINVAL);
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if (!(supported_devices & (1 << dev))) /*
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* Not supported
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*/
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return RET_ERROR (EINVAL);
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regoffs = (*iomap)[dev][LEFT_CHN].regno;
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if (regoffs == 0)
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return RET_ERROR (EINVAL);
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val = sb_getmixer (regoffs);
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change_bits (&val, dev, LEFT_CHN, left);
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levels[dev] = left | (left << 8);
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if ((*iomap)[dev][RIGHT_CHN].regno != regoffs) /*
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* Change register
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*/
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{
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sb_setmixer (regoffs, val); /*
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* Save the old one
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*/
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regoffs = (*iomap)[dev][RIGHT_CHN].regno;
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if (regoffs == 0)
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return left | (left << 8); /*
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* Just left channel present
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*/
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val = sb_getmixer (regoffs); /*
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* Read the new one
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*/
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}
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change_bits (&val, dev, RIGHT_CHN, right);
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sb_setmixer (regoffs, val);
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levels[dev] = left | (right << 8);
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return left | (right << 8);
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}
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static void
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set_recsrc (int src)
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{
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sb_setmixer (RECORD_SRC, (sb_getmixer (RECORD_SRC) & ~7) | (src & 0x7));
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}
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static int
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set_recmask (int mask)
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{
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int devmask, i;
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unsigned char regimageL, regimageR;
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devmask = mask & supported_rec_devices;
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switch (mixer_model)
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{
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case 3:
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if (devmask != SOUND_MASK_MIC &&
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devmask != SOUND_MASK_LINE &&
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devmask != SOUND_MASK_CD)
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{ /*
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* More than one devices selected. Drop the *
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* previous selection
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*/
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devmask &= ~recmask;
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}
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if (devmask != SOUND_MASK_MIC &&
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devmask != SOUND_MASK_LINE &&
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devmask != SOUND_MASK_CD)
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{ /*
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* More than one devices selected. Default to
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* * mic
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*/
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devmask = SOUND_MASK_MIC;
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}
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if (devmask ^ recmask) /*
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* Input source changed
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*/
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{
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switch (devmask)
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{
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case SOUND_MASK_MIC:
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set_recsrc (SRC_MIC);
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break;
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case SOUND_MASK_LINE:
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set_recsrc (SRC_LINE);
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break;
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case SOUND_MASK_CD:
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set_recsrc (SRC_CD);
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break;
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default:
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set_recsrc (SRC_MIC);
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}
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}
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break;
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case 4:
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if (!devmask)
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devmask = SOUND_MASK_MIC;
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regimageL = regimageR = 0;
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for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
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if ((1 << i) & devmask)
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{
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regimageL |= sb16_recmasks_L[i];
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regimageR |= sb16_recmasks_R[i];
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}
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sb_setmixer (SB16_IMASK_L, regimageL);
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sb_setmixer (SB16_IMASK_R, regimageR);
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break;
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}
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recmask = devmask;
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return recmask;
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}
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static int
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sb_mixer_ioctl (int dev, unsigned int cmd, unsigned int arg)
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{
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if (((cmd >> 8) & 0xff) == 'M')
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{
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if (cmd & IOC_IN)
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switch (cmd & 0xff)
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{
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case SOUND_MIXER_RECSRC:
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return IOCTL_OUT (arg, set_recmask (IOCTL_IN (arg)));
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break;
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default:
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return IOCTL_OUT (arg, sb_mixer_set (cmd & 0xff, IOCTL_IN (arg)));
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}
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else
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switch (cmd & 0xff) /*
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* Return parameters
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*/
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{
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case SOUND_MIXER_RECSRC:
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return IOCTL_OUT (arg, recmask);
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break;
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case SOUND_MIXER_DEVMASK:
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return IOCTL_OUT (arg, supported_devices);
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break;
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case SOUND_MIXER_STEREODEVS:
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if (Jazz16_detected)
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return IOCTL_OUT (arg, supported_devices);
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else
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return IOCTL_OUT (arg, supported_devices &
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~(SOUND_MASK_MIC | SOUND_MASK_SPEAKER));
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break;
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case SOUND_MIXER_RECMASK:
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return IOCTL_OUT (arg, supported_rec_devices);
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break;
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case SOUND_MIXER_CAPS:
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return IOCTL_OUT (arg, mixer_caps);
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break;
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default:
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return IOCTL_OUT (arg, sb_mixer_get (cmd & 0xff));
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}
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}
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else
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return RET_ERROR (EINVAL);
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}
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static struct mixer_operations sb_mixer_operations =
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{
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"SoundBlaster",
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sb_mixer_ioctl
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};
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static void
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sb_mixer_reset (void)
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{
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int i;
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for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
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sb_mixer_set (i, levels[i]);
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set_recmask (SOUND_MASK_MIC);
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}
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/*
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* Returns a code depending on whether a SG NX Pro was detected.
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* 1 == Plain SB Pro
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* 2 == SG NX Pro detected.
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* 3 == SB16
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*
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* Used to update message.
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*/
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int
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sb_mixer_init (int major_model)
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{
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int mixer_type = 0;
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sb_setmixer (0x00, 0); /* Reset mixer */
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if (!(mixer_type = detect_mixer ()))
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return 0; /* No mixer. Why? */
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mixer_initialized = 1;
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mixer_model = major_model;
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switch (major_model)
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{
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case 3:
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mixer_caps = SOUND_CAP_EXCL_INPUT;
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#ifdef JAZZ16
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if (Jazz16_detected == 2) /* SM Wave */
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{
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supported_devices = 0;
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supported_rec_devices = 0;
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iomap = &sbpro_mix;
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smw_mixer_init ();
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mixer_type = 1;
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}
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else
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#endif
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#ifdef __SGNXPRO__
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if (mixer_type == 2) /* A SGNXPRO was detected */
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{
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supported_devices = SGNXPRO_MIXER_DEVICES;
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supported_rec_devices = SGNXPRO_RECORDING_DEVICES;
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iomap = &sgnxpro_mix;
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}
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else
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#endif
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{
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supported_devices = SBPRO_MIXER_DEVICES;
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supported_rec_devices = SBPRO_RECORDING_DEVICES;
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iomap = &sbpro_mix;
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mixer_type = 1;
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}
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break;
|
|
|
|
case 4:
|
|
mixer_caps = 0;
|
|
supported_devices = SB16_MIXER_DEVICES;
|
|
supported_rec_devices = SB16_RECORDING_DEVICES;
|
|
iomap = &sb16_mix;
|
|
mixer_type = 3;
|
|
break;
|
|
|
|
default:
|
|
printk ("SB Warning: Unsupported mixer type\n");
|
|
return 0;
|
|
}
|
|
|
|
if (num_mixers < MAX_MIXER_DEV)
|
|
mixer_devs[num_mixers++] = &sb_mixer_operations;
|
|
sb_mixer_reset ();
|
|
return mixer_type;
|
|
}
|
|
|
|
#endif
|