945 lines
24 KiB
C
945 lines
24 KiB
C
/*
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* sound/opl3.c
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*
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* A low level driver for Yamaha YM3812 and OPL-3 -chips
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*
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* Copyright by Hannu Savolainen 1993
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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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*/
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/* Major improvements to the FM handling 30AUG92 by Rob Hooft, */
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/* hooft@chem.ruu.nl */
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#include "sound_config.h"
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#if defined(CONFIGURE_SOUNDCARD) && !defined(EXCLUDE_YM3812)
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#include "opl3.h"
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#define MAX_VOICE 18
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#define OFFS_4OP 11 /* Definitions for the operators OP3 and OP4
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* begin here */
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static int opl3_enabled = 0;
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static int left_address = 0x388, right_address = 0x388, both_address = 0;
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static int nr_voices = 9;
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static int logical_voices[MAX_VOICE] =
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{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17};
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struct voice_info
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{
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unsigned char keyon_byte;
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long bender;
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long bender_range;
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unsigned long orig_freq;
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unsigned long current_freq;
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int mode;
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};
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static struct voice_info voices[MAX_VOICE];
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static struct sbi_instrument *instrmap;
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static struct sbi_instrument *active_instrument[MAX_VOICE] =
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{NULL};
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static struct synth_info fm_info =
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{"AdLib", 0, SYNTH_TYPE_FM, FM_TYPE_ADLIB, 0, 9, 0, SBFM_MAXINSTR, 0};
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static int already_initialized = 0;
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static int opl3_ok = 0;
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static int opl3_busy = 0;
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static int fm_model = 0; /* 0=no fm, 1=mono, 2=SB Pro 1, 3=SB Pro 2 */
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static int store_instr (int instr_no, struct sbi_instrument *instr);
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static void freq_to_fnum (int freq, int *block, int *fnum);
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static void opl3_command (int io_addr, unsigned int addr, unsigned int val);
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static int opl3_kill_note (int dev, int voice, int velocity);
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static unsigned char connection_mask = 0x00;
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void
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enable_opl3_mode (int left, int right, int both)
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{
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opl3_enabled = 1;
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left_address = left;
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right_address = right;
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both_address = both;
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fm_info.capabilities = SYNTH_CAP_OPL3;
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fm_info.synth_subtype = FM_TYPE_OPL3;
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}
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static void
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enter_4op_mode (void)
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{
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int i;
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static int voices_4op[MAX_VOICE] =
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{0, 1, 2, 9, 10, 11, 6, 7, 8, 15, 16, 17};
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connection_mask = 0x3f;
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opl3_command (right_address, CONNECTION_SELECT_REGISTER, 0x3f); /* Select all 4-OP
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* voices */
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for (i = 0; i < 3; i++)
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physical_voices[i].voice_mode = 4;
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for (i = 3; i < 6; i++)
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physical_voices[i].voice_mode = 0;
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for (i = 9; i < 12; i++)
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physical_voices[i].voice_mode = 4;
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for (i = 12; i < 15; i++)
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physical_voices[i].voice_mode = 0;
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for (i = 0; i < 12; i++)
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logical_voices[i] = voices_4op[i];
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nr_voices = 12;
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}
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static int
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opl3_ioctl (int dev,
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unsigned int cmd, unsigned int arg)
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{
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switch (cmd)
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{
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case SNDCTL_FM_LOAD_INSTR:
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{
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struct sbi_instrument ins;
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IOCTL_FROM_USER ((char *) &ins, (char *) arg, 0, sizeof (ins));
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if (ins.channel < 0 || ins.channel >= SBFM_MAXINSTR)
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{
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printk ("FM Error: Invalid instrument number %d\n", ins.channel);
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return RET_ERROR (EINVAL);
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}
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pmgr_inform (dev, PM_E_PATCH_LOADED, ins.channel, 0, 0, 0);
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return store_instr (ins.channel, &ins);
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}
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break;
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case SNDCTL_SYNTH_INFO:
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fm_info.nr_voices = (nr_voices == 12) ? 6 : nr_voices;
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IOCTL_TO_USER ((char *) arg, 0, &fm_info, sizeof (fm_info));
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return 0;
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break;
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case SNDCTL_SYNTH_MEMAVL:
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return 0x7fffffff;
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break;
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case SNDCTL_FM_4OP_ENABLE:
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if (opl3_enabled)
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enter_4op_mode ();
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return 0;
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break;
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default:
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return RET_ERROR (EINVAL);
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}
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}
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int
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opl3_detect (int ioaddr)
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{
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/*
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* This function returns 1 if the FM chicp is present at the given I/O port
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* The detection algorithm plays with the timer built in the FM chip and
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* looks for a change in the status register.
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*
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* Note! The timers of the FM chip are not connected to AdLib (and compatible)
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* boards.
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*
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* Note2! The chip is initialized if detected.
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*/
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unsigned char stat1, stat2;
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int i;
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if (already_initialized)
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{
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return 0; /* Do avoid duplicate initializations */
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}
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if (opl3_enabled)
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ioaddr = left_address;
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opl3_command (ioaddr, TIMER_CONTROL_REGISTER, TIMER1_MASK | TIMER2_MASK); /* Reset timers 1 and 2 */
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opl3_command (ioaddr, TIMER_CONTROL_REGISTER, IRQ_RESET); /* Reset the IRQ of FM
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* chicp */
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stat1 = INB (ioaddr); /* Read status register */
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if ((stat1 & 0xE0) != 0x00)
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{
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return 0; /* Should be 0x00 */
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}
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opl3_command (ioaddr, TIMER1_REGISTER, 0xff); /* Set timer 1 to 0xff */
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opl3_command (ioaddr, TIMER_CONTROL_REGISTER,
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TIMER2_MASK | TIMER1_START); /* Unmask and start timer 1 */
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/*
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* Now we have to delay at least 80 msec
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*/
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for (i = 0; i < 50; i++)
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tenmicrosec (); /* To be sure */
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stat2 = INB (ioaddr); /* Read status after timers have expired */
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/* Stop the timers */
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opl3_command (ioaddr, TIMER_CONTROL_REGISTER, TIMER1_MASK | TIMER2_MASK); /* Reset timers 1 and 2 */
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opl3_command (ioaddr, TIMER_CONTROL_REGISTER, IRQ_RESET); /* Reset the IRQ of FM
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* chicp */
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if ((stat2 & 0xE0) != 0xc0)
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{
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return 0; /* There is no YM3812 */
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}
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/* There is a FM chicp in this address. Now set some default values. */
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for (i = 0; i < 9; i++)
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opl3_command (ioaddr, KEYON_BLOCK + i, 0); /* Note off */
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opl3_command (ioaddr, TEST_REGISTER, ENABLE_WAVE_SELECT);
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opl3_command (ioaddr, PERCUSSION_REGISTER, 0x00); /* Melodic mode. */
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return 1;
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}
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static int
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opl3_kill_note (int dev, int voice, int velocity)
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{
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struct physical_voice_info *map;
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if (voice < 0 || voice >= nr_voices)
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return 0;
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map = &physical_voices[logical_voices[voice]];
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DEB (printk ("Kill note %d\n", voice));
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if (map->voice_mode == 0)
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return 0;
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opl3_command (map->ioaddr, KEYON_BLOCK + map->voice_num, voices[voice].keyon_byte & ~0x20);
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voices[voice].keyon_byte = 0;
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voices[voice].bender = 0;
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voices[voice].bender_range = 200; /* 200 cents = 2 semitones */
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voices[voice].orig_freq = 0;
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voices[voice].current_freq = 0;
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voices[voice].mode = 0;
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return 0;
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}
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#define HIHAT 0
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#define CYMBAL 1
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#define TOMTOM 2
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#define SNARE 3
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#define BDRUM 4
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#define UNDEFINED TOMTOM
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#define DEFAULT TOMTOM
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static int
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store_instr (int instr_no, struct sbi_instrument *instr)
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{
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if (instr->key != FM_PATCH && (instr->key != OPL3_PATCH || !opl3_enabled))
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printk ("FM warning: Invalid patch format field (key) 0x%x\n", instr->key);
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memcpy ((char *) &(instrmap[instr_no]), (char *) instr, sizeof (*instr));
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return 0;
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}
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static int
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opl3_set_instr (int dev, int voice, int instr_no)
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{
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if (voice < 0 || voice >= nr_voices)
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return 0;
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if (instr_no < 0 || instr_no >= SBFM_MAXINSTR)
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return 0;
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active_instrument[voice] = &instrmap[instr_no];
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return 0;
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}
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/*
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* The next table looks magical, but it certainly is not. Its values have
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* been calculated as table[i]=8*log(i/64)/log(2) with an obvious exception
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* for i=0. This log-table converts a linear volume-scaling (0..127) to a
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* logarithmic scaling as present in the FM-synthesizer chips. so : Volume
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* 64 = 0 db = relative volume 0 and: Volume 32 = -6 db = relative
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* volume -8 it was implemented as a table because it is only 128 bytes and
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* it saves a lot of log() calculations. (RH)
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*/
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char fm_volume_table[128] =
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{-64, -48, -40, -35, -32, -29, -27, -26, /* 0 - 7 */
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-24, -23, -21, -20, -19, -18, -18, -17, /* 8 - 15 */
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-16, -15, -15, -14, -13, -13, -12, -12, /* 16 - 23 */
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-11, -11, -10, -10, -10, -9, -9, -8, /* 24 - 31 */
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-8, -8, -7, -7, -7, -6, -6, -6, /* 32 - 39 */
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-5, -5, -5, -5, -4, -4, -4, -4, /* 40 - 47 */
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-3, -3, -3, -3, -2, -2, -2, -2, /* 48 - 55 */
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-2, -1, -1, -1, -1, 0, 0, 0, /* 56 - 63 */
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0, 0, 0, 1, 1, 1, 1, 1, /* 64 - 71 */
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1, 2, 2, 2, 2, 2, 2, 2, /* 72 - 79 */
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3, 3, 3, 3, 3, 3, 3, 4, /* 80 - 87 */
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4, 4, 4, 4, 4, 4, 4, 5, /* 88 - 95 */
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5, 5, 5, 5, 5, 5, 5, 5, /* 96 - 103 */
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6, 6, 6, 6, 6, 6, 6, 6, /* 104 - 111 */
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6, 7, 7, 7, 7, 7, 7, 7, /* 112 - 119 */
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7, 7, 7, 8, 8, 8, 8, 8}; /* 120 - 127 */
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static void
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calc_vol (unsigned char *regbyte, int volume)
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{
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int level = (~*regbyte & 0x3f);
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if (level)
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level += fm_volume_table[volume];
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if (level > 0x3f)
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level = 0x3f;
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if (level < 0)
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level = 0;
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*regbyte = (*regbyte & 0xc0) | (~level & 0x3f);
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}
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static void
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set_voice_volume (int voice, int volume)
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{
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unsigned char vol1, vol2, vol3, vol4;
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struct sbi_instrument *instr;
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struct physical_voice_info *map;
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if (voice < 0 || voice >= nr_voices)
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return;
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map = &physical_voices[logical_voices[voice]];
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instr = active_instrument[voice];
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if (!instr)
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instr = &instrmap[0];
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if (instr->channel < 0)
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return;
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if (voices[voice].mode == 0)
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return;
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if (voices[voice].mode == 2)
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{ /* 2 OP voice */
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vol1 = instr->operators[2];
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vol2 = instr->operators[3];
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if ((instr->operators[10] & 0x01))
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{ /* Additive synthesis */
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calc_vol (&vol1, volume);
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calc_vol (&vol2, volume);
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}
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else
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{ /* FM synthesis */
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calc_vol (&vol2, volume);
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}
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[0], vol1); /* Modulator volume */
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[1], vol2); /* Carrier volume */
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}
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else
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{ /* 4 OP voice */
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int connection;
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vol1 = instr->operators[2];
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vol2 = instr->operators[3];
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vol3 = instr->operators[OFFS_4OP + 2];
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vol4 = instr->operators[OFFS_4OP + 3];
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/*
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* The connection method for 4 OP voices is defined by the rightmost
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* bits at the offsets 10 and 10+OFFS_4OP
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*/
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connection = ((instr->operators[10] & 0x01) << 1) | (instr->operators[10 + OFFS_4OP] & 0x01);
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switch (connection)
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{
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case 0:
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calc_vol (&vol4, volume); /* Just the OP 4 is carrier */
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break;
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case 1:
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calc_vol (&vol2, volume);
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calc_vol (&vol4, volume);
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break;
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case 2:
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calc_vol (&vol1, volume);
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calc_vol (&vol4, volume);
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break;
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case 3:
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calc_vol (&vol1, volume);
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calc_vol (&vol3, volume);
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calc_vol (&vol4, volume);
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break;
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default: /* Why ?? */ ;
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}
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[0], vol1);
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[1], vol2);
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[2], vol3);
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[3], vol4);
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}
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}
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static int
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opl3_start_note (int dev, int voice, int note, int volume)
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{
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unsigned char data, fpc;
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int block, fnum, freq, voice_mode;
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struct sbi_instrument *instr;
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struct physical_voice_info *map;
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if (voice < 0 || voice >= nr_voices)
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return 0;
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map = &physical_voices[logical_voices[voice]];
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if (map->voice_mode == 0)
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return 0;
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if (note == 255) /* Just change the volume */
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{
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set_voice_volume (voice, volume);
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return 0;
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}
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/* Kill previous note before playing */
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[1], 0xff); /* Carrier volume to min */
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[0], 0xff); /* Modulator volume to */
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if (map->voice_mode == 4)
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{
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[2], 0xff);
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opl3_command (map->ioaddr, KSL_LEVEL + map->op[3], 0xff);
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}
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opl3_command (map->ioaddr, KEYON_BLOCK + map->voice_num, 0x00); /* Note off */
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instr = active_instrument[voice];
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if (!instr)
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instr = &instrmap[0];
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if (instr->channel < 0)
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{
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printk (
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"OPL3: Initializing voice %d with undefined instrument\n",
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voice);
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return 0;
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}
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if (map->voice_mode == 2 && instr->key == OPL3_PATCH)
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return 0; /* Cannot play */
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voice_mode = map->voice_mode;
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if (voice_mode == 4)
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{
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int voice_shift;
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voice_shift = (map->ioaddr == left_address) ? 0 : 3;
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voice_shift += map->voice_num;
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if (instr->key != OPL3_PATCH) /* Just 2 OP patch */
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{
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voice_mode = 2;
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connection_mask &= ~(1 << voice_shift);
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}
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else
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{
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connection_mask |= (1 << voice_shift);
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}
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opl3_command (right_address, CONNECTION_SELECT_REGISTER, connection_mask);
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}
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/* Set Sound Characteristics */
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opl3_command (map->ioaddr, AM_VIB + map->op[0], instr->operators[0]);
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opl3_command (map->ioaddr, AM_VIB + map->op[1], instr->operators[1]);
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/* Set Attack/Decay */
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opl3_command (map->ioaddr, ATTACK_DECAY + map->op[0], instr->operators[4]);
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opl3_command (map->ioaddr, ATTACK_DECAY + map->op[1], instr->operators[5]);
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/* Set Sustain/Release */
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opl3_command (map->ioaddr, SUSTAIN_RELEASE + map->op[0], instr->operators[6]);
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opl3_command (map->ioaddr, SUSTAIN_RELEASE + map->op[1], instr->operators[7]);
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|
|
/* Set Wave Select */
|
|
opl3_command (map->ioaddr, WAVE_SELECT + map->op[0], instr->operators[8]);
|
|
opl3_command (map->ioaddr, WAVE_SELECT + map->op[1], instr->operators[9]);
|
|
|
|
/* Set Feedback/Connection */
|
|
fpc = instr->operators[10];
|
|
if (!(fpc & 0x30))
|
|
fpc |= 0x30; /* Ensure that at least one chn is enabled */
|
|
opl3_command (map->ioaddr, FEEDBACK_CONNECTION + map->voice_num,
|
|
fpc);
|
|
|
|
/*
|
|
* If the voice is a 4 OP one, initialize the operators 3 and 4 also
|
|
*/
|
|
|
|
if (voice_mode == 4)
|
|
{
|
|
|
|
/* Set Sound Characteristics */
|
|
opl3_command (map->ioaddr, AM_VIB + map->op[2], instr->operators[OFFS_4OP + 0]);
|
|
opl3_command (map->ioaddr, AM_VIB + map->op[3], instr->operators[OFFS_4OP + 1]);
|
|
|
|
/* Set Attack/Decay */
|
|
opl3_command (map->ioaddr, ATTACK_DECAY + map->op[2], instr->operators[OFFS_4OP + 4]);
|
|
opl3_command (map->ioaddr, ATTACK_DECAY + map->op[3], instr->operators[OFFS_4OP + 5]);
|
|
|
|
/* Set Sustain/Release */
|
|
opl3_command (map->ioaddr, SUSTAIN_RELEASE + map->op[2], instr->operators[OFFS_4OP + 6]);
|
|
opl3_command (map->ioaddr, SUSTAIN_RELEASE + map->op[3], instr->operators[OFFS_4OP + 7]);
|
|
|
|
/* Set Wave Select */
|
|
opl3_command (map->ioaddr, WAVE_SELECT + map->op[2], instr->operators[OFFS_4OP + 8]);
|
|
opl3_command (map->ioaddr, WAVE_SELECT + map->op[3], instr->operators[OFFS_4OP + 9]);
|
|
|
|
/* Set Feedback/Connection */
|
|
fpc = instr->operators[OFFS_4OP + 10];
|
|
if (!(fpc & 0x30))
|
|
fpc |= 0x30; /* Ensure that at least one chn is enabled */
|
|
opl3_command (map->ioaddr, FEEDBACK_CONNECTION + map->voice_num + 3, fpc);
|
|
}
|
|
|
|
voices[voice].mode = voice_mode;
|
|
|
|
set_voice_volume (voice, volume);
|
|
|
|
freq = voices[voice].orig_freq = note_to_freq (note) / 1000;
|
|
|
|
/*
|
|
* Since the pitch bender may have been set before playing the note, we
|
|
* have to calculate the bending now.
|
|
*/
|
|
|
|
freq = compute_finetune (voices[voice].orig_freq, voices[voice].bender, voices[voice].bender_range);
|
|
voices[voice].current_freq = freq;
|
|
|
|
freq_to_fnum (freq, &block, &fnum);
|
|
|
|
/* Play note */
|
|
|
|
data = fnum & 0xff; /* Least significant bits of fnumber */
|
|
opl3_command (map->ioaddr, FNUM_LOW + map->voice_num, data);
|
|
|
|
data = 0x20 | ((block & 0x7) << 2) | ((fnum >> 8) & 0x3);
|
|
voices[voice].keyon_byte = data;
|
|
opl3_command (map->ioaddr, KEYON_BLOCK + map->voice_num, data);
|
|
if (voice_mode == 4)
|
|
opl3_command (map->ioaddr, KEYON_BLOCK + map->voice_num + 3, data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
freq_to_fnum (int freq, int *block, int *fnum)
|
|
{
|
|
int f, octave;
|
|
|
|
/* Converts the note frequency to block and fnum values for the FM chip */
|
|
/* First try to compute the block -value (octave) where the note belongs */
|
|
|
|
f = freq;
|
|
|
|
octave = 5;
|
|
|
|
if (f == 0)
|
|
octave = 0;
|
|
else if (f < 261)
|
|
{
|
|
while (f < 261)
|
|
{
|
|
octave--;
|
|
f <<= 1;
|
|
}
|
|
}
|
|
else if (f > 493)
|
|
{
|
|
while (f > 493)
|
|
{
|
|
octave++;
|
|
f >>= 1;
|
|
}
|
|
}
|
|
|
|
if (octave > 7)
|
|
octave = 7;
|
|
|
|
*fnum = freq * (1 << (20 - octave)) / 49716;
|
|
*block = octave;
|
|
}
|
|
|
|
static void
|
|
opl3_command (int io_addr, unsigned int addr, unsigned int val)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* The original 2-OP synth requires a quite long delay after writing to a
|
|
* register. The OPL-3 survives with just two INBs
|
|
*/
|
|
|
|
OUTB ((unsigned char) (addr & 0xff), io_addr); /* Select register */
|
|
|
|
if (!opl3_enabled)
|
|
tenmicrosec ();
|
|
else
|
|
for (i = 0; i < 2; i++)
|
|
INB (io_addr);
|
|
|
|
OUTB ((unsigned char) (val & 0xff), io_addr + 1); /* Write to register */
|
|
|
|
if (!opl3_enabled)
|
|
{
|
|
tenmicrosec ();
|
|
tenmicrosec ();
|
|
tenmicrosec ();
|
|
}
|
|
else
|
|
for (i = 0; i < 2; i++)
|
|
INB (io_addr);
|
|
}
|
|
|
|
static void
|
|
opl3_reset (int dev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < nr_voices; i++)
|
|
{
|
|
opl3_command (physical_voices[logical_voices[i]].ioaddr,
|
|
KSL_LEVEL + physical_voices[logical_voices[i]].op[0], 0xff); /* OP1 volume to min */
|
|
|
|
opl3_command (physical_voices[logical_voices[i]].ioaddr,
|
|
KSL_LEVEL + physical_voices[logical_voices[i]].op[1], 0xff); /* OP2 volume to min */
|
|
|
|
if (physical_voices[logical_voices[i]].voice_mode == 4) /* 4 OP voice */
|
|
{
|
|
opl3_command (physical_voices[logical_voices[i]].ioaddr,
|
|
KSL_LEVEL + physical_voices[logical_voices[i]].op[2], 0xff); /* OP3 volume to min */
|
|
|
|
opl3_command (physical_voices[logical_voices[i]].ioaddr,
|
|
KSL_LEVEL + physical_voices[logical_voices[i]].op[3], 0xff); /* OP4 volume to min */
|
|
}
|
|
|
|
opl3_kill_note (dev, i, 64);
|
|
}
|
|
|
|
if (opl3_enabled)
|
|
{
|
|
nr_voices = 18;
|
|
|
|
for (i = 0; i < 18; i++)
|
|
logical_voices[i] = i;
|
|
|
|
for (i = 0; i < 18; i++)
|
|
physical_voices[i].voice_mode = 2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
static int
|
|
opl3_open (int dev, int mode)
|
|
{
|
|
if (!opl3_ok)
|
|
return RET_ERROR (ENXIO);
|
|
if (opl3_busy)
|
|
return RET_ERROR (EBUSY);
|
|
opl3_busy = 1;
|
|
|
|
connection_mask = 0x00; /* Just 2 OP voices */
|
|
if (opl3_enabled)
|
|
opl3_command (right_address, CONNECTION_SELECT_REGISTER, connection_mask);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
opl3_close (int dev)
|
|
{
|
|
opl3_busy = 0;
|
|
nr_voices = opl3_enabled ? 18 : 9;
|
|
fm_info.nr_drums = 0;
|
|
fm_info.perc_mode = 0;
|
|
|
|
opl3_reset (dev);
|
|
}
|
|
|
|
static void
|
|
opl3_hw_control (int dev, unsigned char *event)
|
|
{
|
|
}
|
|
|
|
static int
|
|
opl3_load_patch (int dev, int format, snd_rw_buf * addr,
|
|
int offs, int count, int pmgr_flag)
|
|
{
|
|
struct sbi_instrument ins;
|
|
|
|
if (count < sizeof (ins))
|
|
{
|
|
printk ("FM Error: Patch record too short\n");
|
|
return RET_ERROR (EINVAL);
|
|
}
|
|
|
|
COPY_FROM_USER (&((char *) &ins)[offs], (char *) addr, offs, sizeof (ins) - offs);
|
|
|
|
if (ins.channel < 0 || ins.channel >= SBFM_MAXINSTR)
|
|
{
|
|
printk ("FM Error: Invalid instrument number %d\n", ins.channel);
|
|
return RET_ERROR (EINVAL);
|
|
}
|
|
ins.key = format;
|
|
|
|
return store_instr (ins.channel, &ins);
|
|
}
|
|
|
|
static void
|
|
opl3_panning (int dev, int voice, int pressure)
|
|
{
|
|
}
|
|
|
|
#define SET_VIBRATO(cell) { \
|
|
tmp = instr->operators[(cell-1)+(((cell-1)/2)*OFFS_4OP)]; \
|
|
if (pressure > 110) \
|
|
tmp |= 0x40; /* Vibrato on */ \
|
|
opl3_command (map->ioaddr, AM_VIB + map->op[cell-1], tmp);}
|
|
|
|
static void
|
|
opl3_aftertouch (int dev, int voice, int pressure)
|
|
{
|
|
int tmp;
|
|
struct sbi_instrument *instr;
|
|
struct physical_voice_info *map;
|
|
|
|
if (voice < 0 || voice >= nr_voices)
|
|
return;
|
|
|
|
map = &physical_voices[logical_voices[voice]];
|
|
|
|
DEB (printk ("Aftertouch %d\n", voice));
|
|
|
|
if (map->voice_mode == 0)
|
|
return;
|
|
|
|
/*
|
|
* Adjust the amount of vibrato depending the pressure
|
|
*/
|
|
|
|
instr = active_instrument[voice];
|
|
|
|
if (!instr)
|
|
instr = &instrmap[0];
|
|
|
|
if (voices[voice].mode == 4)
|
|
{
|
|
int connection = ((instr->operators[10] & 0x01) << 1) | (instr->operators[10 + OFFS_4OP] & 0x01);
|
|
|
|
switch (connection)
|
|
{
|
|
case 0:
|
|
SET_VIBRATO (4);
|
|
break;
|
|
|
|
case 1:
|
|
SET_VIBRATO (2);
|
|
SET_VIBRATO (4);
|
|
break;
|
|
|
|
case 2:
|
|
SET_VIBRATO (1);
|
|
SET_VIBRATO (4);
|
|
break;
|
|
|
|
case 3:
|
|
SET_VIBRATO (1);
|
|
SET_VIBRATO (3);
|
|
SET_VIBRATO (4);
|
|
break;
|
|
|
|
}
|
|
/* Not implemented yet */
|
|
}
|
|
else
|
|
{
|
|
SET_VIBRATO (1);
|
|
|
|
if ((instr->operators[10] & 0x01)) /* Additive synthesis */
|
|
SET_VIBRATO (2);
|
|
}
|
|
}
|
|
|
|
#undef SET_VIBRATO
|
|
|
|
static void
|
|
opl3_controller (int dev, int voice, int ctrl_num, int value)
|
|
{
|
|
unsigned char data;
|
|
int block, fnum, freq;
|
|
struct physical_voice_info *map;
|
|
|
|
if (voice < 0 || voice >= nr_voices)
|
|
return;
|
|
|
|
map = &physical_voices[logical_voices[voice]];
|
|
|
|
if (map->voice_mode == 0)
|
|
return;
|
|
|
|
switch (ctrl_num)
|
|
{
|
|
case CTRL_PITCH_BENDER:
|
|
voices[voice].bender = value;
|
|
if (!value)
|
|
return;
|
|
if (!(voices[voice].keyon_byte & 0x20))
|
|
return; /* Not keyed on */
|
|
|
|
freq = compute_finetune (voices[voice].orig_freq, voices[voice].bender, voices[voice].bender_range);
|
|
voices[voice].current_freq = freq;
|
|
|
|
freq_to_fnum (freq, &block, &fnum);
|
|
|
|
data = fnum & 0xff; /* Least significant bits of fnumber */
|
|
opl3_command (map->ioaddr, FNUM_LOW + map->voice_num, data);
|
|
|
|
data = 0x20 | ((block & 0x7) << 2) | ((fnum >> 8) & 0x3);
|
|
/* KEYON|OCTAVE|MS bits * of f-num */
|
|
|
|
voices[voice].keyon_byte = data;
|
|
opl3_command (map->ioaddr, KEYON_BLOCK + map->voice_num, data);
|
|
break;
|
|
|
|
case CTRL_PITCH_BENDER_RANGE:
|
|
voices[voice].bender_range = value;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
opl3_patchmgr (int dev, struct patmgr_info *rec)
|
|
{
|
|
return RET_ERROR (EINVAL);
|
|
}
|
|
|
|
static struct synth_operations opl3_operations =
|
|
{
|
|
&fm_info,
|
|
SYNTH_TYPE_FM,
|
|
FM_TYPE_ADLIB,
|
|
opl3_open,
|
|
opl3_close,
|
|
opl3_ioctl,
|
|
opl3_kill_note,
|
|
opl3_start_note,
|
|
opl3_set_instr,
|
|
opl3_reset,
|
|
opl3_hw_control,
|
|
opl3_load_patch,
|
|
opl3_aftertouch,
|
|
opl3_controller,
|
|
opl3_panning,
|
|
opl3_patchmgr
|
|
};
|
|
|
|
long
|
|
opl3_init (long mem_start)
|
|
{
|
|
int i;
|
|
|
|
PERMANENT_MALLOC(struct sbi_instrument *, instrmap,
|
|
SBFM_MAXINSTR * sizeof (*instrmap), mem_start);
|
|
|
|
synth_devs[num_synths++] = &opl3_operations;
|
|
fm_model = 0;
|
|
opl3_ok = 1;
|
|
if (opl3_enabled)
|
|
{
|
|
printk ("snd1: <Yamaha OPL-3 FM>");
|
|
fm_model = 2;
|
|
nr_voices = 18;
|
|
fm_info.nr_drums = 0;
|
|
fm_info.capabilities |= SYNTH_CAP_OPL3;
|
|
#ifndef SCO
|
|
strcpy (fm_info.name, "Yamaha OPL-3");
|
|
#endif
|
|
|
|
for (i = 0; i < 18; i++)
|
|
if (physical_voices[i].ioaddr == USE_LEFT)
|
|
physical_voices[i].ioaddr = left_address;
|
|
else
|
|
physical_voices[i].ioaddr = right_address;
|
|
|
|
|
|
opl3_command (right_address, OPL3_MODE_REGISTER, OPL3_ENABLE); /* Enable OPL-3 mode */
|
|
opl3_command (right_address, CONNECTION_SELECT_REGISTER, 0x00); /* Select all 2-OP
|
|
* voices */
|
|
}
|
|
else
|
|
{
|
|
printk ("snd1: <Yamaha 2-OP FM>");
|
|
fm_model = 1;
|
|
nr_voices = 9;
|
|
fm_info.nr_drums = 0;
|
|
|
|
for (i = 0; i < 18; i++)
|
|
physical_voices[i].ioaddr = left_address;
|
|
};
|
|
|
|
already_initialized = 1;
|
|
for (i = 0; i < SBFM_MAXINSTR; i++)
|
|
instrmap[i].channel = -1;
|
|
|
|
return mem_start;
|
|
}
|
|
|
|
#endif
|