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