3d774d5ef0
Currently OSS sequencer emulation is tied with ALSA sequencer core, both are built in the same level; i.e. when CONFIG_SND_SEQUENCER=y, the OSS sequencer emulation is also always built-in, even though the functionality can be built as an individual module. This patch changes the rule and allows users to build snd-seq-oss module while others are built-in. Essentially, it's just a few simple changes in Kconfig and Makefile. Some driver codes like opl3 need to convert from the simple ifdef to IS_ENABLED(). But that's all. You might wonder how about the dependency: right, it can be messy, but it still works. Since we rewrote the sequencer binding with the standard bus, the driver can be bound at any time on demand. So, the synthesizer driver module can be loaded individually from the OSS emulation core before/after it. Signed-off-by: Takashi Iwai <tiwai@suse.de>
392 lines
12 KiB
C
392 lines
12 KiB
C
#ifndef __SOUND_OPL3_H
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#define __SOUND_OPL3_H
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/*
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* Definitions of the OPL-3 registers.
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*
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>,
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* Hannu Savolainen 1993-1996
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*
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*
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* The OPL-3 mode is switched on by writing 0x01, to the offset 5
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* of the right side.
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*
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* Another special register at the right side is at offset 4. It contains
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* a bit mask defining which voices are used as 4 OP voices.
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*
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* The percussive mode is implemented in the left side only.
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*
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* With the above exceptions the both sides can be operated independently.
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*
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* A 4 OP voice can be created by setting the corresponding
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* bit at offset 4 of the right side.
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*
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* For example setting the rightmost bit (0x01) changes the
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* first voice on the right side to the 4 OP mode. The fourth
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* voice is made inaccessible.
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*
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* If a voice is set to the 2 OP mode, it works like 2 OP modes
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* of the original YM3812 (AdLib). In addition the voice can
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* be connected the left, right or both stereo channels. It can
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* even be left unconnected. This works with 4 OP voices also.
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*
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* The stereo connection bits are located in the FEEDBACK_CONNECTION
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* register of the voice (0xC0-0xC8). In 4 OP voices these bits are
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* in the second half of the voice.
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/core.h>
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#include <sound/hwdep.h>
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#include <sound/timer.h>
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#include <sound/seq_midi_emul.h>
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#include <sound/seq_oss.h>
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#include <sound/seq_oss_legacy.h>
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#include <sound/seq_device.h>
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#include <sound/asound_fm.h>
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/*
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* Register numbers for the global registers
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*/
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#define OPL3_REG_TEST 0x01
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#define OPL3_ENABLE_WAVE_SELECT 0x20
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#define OPL3_REG_TIMER1 0x02
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#define OPL3_REG_TIMER2 0x03
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#define OPL3_REG_TIMER_CONTROL 0x04 /* Left side */
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#define OPL3_IRQ_RESET 0x80
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#define OPL3_TIMER1_MASK 0x40
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#define OPL3_TIMER2_MASK 0x20
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#define OPL3_TIMER1_START 0x01
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#define OPL3_TIMER2_START 0x02
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#define OPL3_REG_CONNECTION_SELECT 0x04 /* Right side */
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#define OPL3_LEFT_4OP_0 0x01
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#define OPL3_LEFT_4OP_1 0x02
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#define OPL3_LEFT_4OP_2 0x04
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#define OPL3_RIGHT_4OP_0 0x08
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#define OPL3_RIGHT_4OP_1 0x10
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#define OPL3_RIGHT_4OP_2 0x20
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#define OPL3_REG_MODE 0x05 /* Right side */
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#define OPL3_OPL3_ENABLE 0x01 /* OPL3 mode */
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#define OPL3_OPL4_ENABLE 0x02 /* OPL4 mode */
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#define OPL3_REG_KBD_SPLIT 0x08 /* Left side */
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#define OPL3_COMPOSITE_SINE_WAVE_MODE 0x80 /* Don't use with OPL-3? */
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#define OPL3_KEYBOARD_SPLIT 0x40
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#define OPL3_REG_PERCUSSION 0xbd /* Left side only */
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#define OPL3_TREMOLO_DEPTH 0x80
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#define OPL3_VIBRATO_DEPTH 0x40
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#define OPL3_PERCUSSION_ENABLE 0x20
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#define OPL3_BASSDRUM_ON 0x10
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#define OPL3_SNAREDRUM_ON 0x08
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#define OPL3_TOMTOM_ON 0x04
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#define OPL3_CYMBAL_ON 0x02
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#define OPL3_HIHAT_ON 0x01
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/*
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* Offsets to the register banks for operators. To get the
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* register number just add the operator offset to the bank offset
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*
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* AM/VIB/EG/KSR/Multiple (0x20 to 0x35)
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*/
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#define OPL3_REG_AM_VIB 0x20
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#define OPL3_TREMOLO_ON 0x80
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#define OPL3_VIBRATO_ON 0x40
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#define OPL3_SUSTAIN_ON 0x20
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#define OPL3_KSR 0x10 /* Key scaling rate */
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#define OPL3_MULTIPLE_MASK 0x0f /* Frequency multiplier */
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/*
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* KSL/Total level (0x40 to 0x55)
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*/
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#define OPL3_REG_KSL_LEVEL 0x40
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#define OPL3_KSL_MASK 0xc0 /* Envelope scaling bits */
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#define OPL3_TOTAL_LEVEL_MASK 0x3f /* Strength (volume) of OP */
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/*
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* Attack / Decay rate (0x60 to 0x75)
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*/
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#define OPL3_REG_ATTACK_DECAY 0x60
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#define OPL3_ATTACK_MASK 0xf0
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#define OPL3_DECAY_MASK 0x0f
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/*
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* Sustain level / Release rate (0x80 to 0x95)
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*/
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#define OPL3_REG_SUSTAIN_RELEASE 0x80
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#define OPL3_SUSTAIN_MASK 0xf0
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#define OPL3_RELEASE_MASK 0x0f
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/*
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* Wave select (0xE0 to 0xF5)
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*/
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#define OPL3_REG_WAVE_SELECT 0xe0
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#define OPL3_WAVE_SELECT_MASK 0x07
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/*
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* Offsets to the register banks for voices. Just add to the
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* voice number to get the register number.
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*
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* F-Number low bits (0xA0 to 0xA8).
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*/
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#define OPL3_REG_FNUM_LOW 0xa0
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/*
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* F-number high bits / Key on / Block (octave) (0xB0 to 0xB8)
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*/
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#define OPL3_REG_KEYON_BLOCK 0xb0
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#define OPL3_KEYON_BIT 0x20
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#define OPL3_BLOCKNUM_MASK 0x1c
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#define OPL3_FNUM_HIGH_MASK 0x03
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/*
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* Feedback / Connection (0xc0 to 0xc8)
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*
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* These registers have two new bits when the OPL-3 mode
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* is selected. These bits controls connecting the voice
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* to the stereo channels. For 4 OP voices this bit is
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* defined in the second half of the voice (add 3 to the
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* register offset).
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*
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* For 4 OP voices the connection bit is used in the
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* both halves (gives 4 ways to connect the operators).
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*/
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#define OPL3_REG_FEEDBACK_CONNECTION 0xc0
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#define OPL3_FEEDBACK_MASK 0x0e /* Valid just for 1st OP of a voice */
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#define OPL3_CONNECTION_BIT 0x01
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/*
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* In the 4 OP mode there is four possible configurations how the
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* operators can be connected together (in 2 OP modes there is just
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* AM or FM). The 4 OP connection mode is defined by the rightmost
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* bit of the FEEDBACK_CONNECTION (0xC0-0xC8) on the both halves.
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*
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* First half Second half Mode
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*
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* +---+
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* v |
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* 0 0 >+-1-+--2--3--4-->
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*
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*
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*
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* +---+
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* | |
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* 0 1 >+-1-+--2-+
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* |->
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* >--3----4-+
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*
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* +---+
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* | |
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* 1 0 >+-1-+-----+
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* |->
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* >--2--3--4-+
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*
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* +---+
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* | |
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* 1 1 >+-1-+--+
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* |
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* >--2--3-+->
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* |
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* >--4----+
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*/
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#define OPL3_STEREO_BITS 0x30 /* OPL-3 only */
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#define OPL3_VOICE_TO_LEFT 0x10
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#define OPL3_VOICE_TO_RIGHT 0x20
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/*
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*/
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#define OPL3_LEFT 0x0000
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#define OPL3_RIGHT 0x0100
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#define OPL3_HW_AUTO 0x0000
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#define OPL3_HW_OPL2 0x0200
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#define OPL3_HW_OPL3 0x0300
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#define OPL3_HW_OPL3_SV 0x0301 /* S3 SonicVibes */
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#define OPL3_HW_OPL3_CS 0x0302 /* CS4232/CS4236+ */
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#define OPL3_HW_OPL3_FM801 0x0303 /* FM801 */
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#define OPL3_HW_OPL3_CS4281 0x0304 /* CS4281 */
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#define OPL3_HW_OPL4 0x0400 /* YMF278B/YMF295 */
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#define OPL3_HW_OPL4_ML 0x0401 /* YMF704/YMF721 */
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#define OPL3_HW_MASK 0xff00
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#define MAX_OPL2_VOICES 9
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#define MAX_OPL3_VOICES 18
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struct snd_opl3;
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/*
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* Instrument record, aka "Patch"
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*/
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/* FM operator */
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struct fm_operator {
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unsigned char am_vib;
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unsigned char ksl_level;
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unsigned char attack_decay;
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unsigned char sustain_release;
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unsigned char wave_select;
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} __attribute__((packed));
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/* Instrument data */
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struct fm_instrument {
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struct fm_operator op[4];
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unsigned char feedback_connection[2];
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unsigned char echo_delay;
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unsigned char echo_atten;
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unsigned char chorus_spread;
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unsigned char trnsps;
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unsigned char fix_dur;
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unsigned char modes;
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unsigned char fix_key;
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};
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/* type */
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#define FM_PATCH_OPL2 0x01 /* OPL2 2 operators FM instrument */
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#define FM_PATCH_OPL3 0x02 /* OPL3 4 operators FM instrument */
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/* Instrument record */
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struct fm_patch {
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unsigned char prog;
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unsigned char bank;
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unsigned char type;
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struct fm_instrument inst;
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char name[24];
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struct fm_patch *next;
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};
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/*
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* A structure to keep track of each hardware voice
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*/
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struct snd_opl3_voice {
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int state; /* status */
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#define SNDRV_OPL3_ST_OFF 0 /* Not playing */
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#define SNDRV_OPL3_ST_ON_2OP 1 /* 2op voice is allocated */
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#define SNDRV_OPL3_ST_ON_4OP 2 /* 4op voice is allocated */
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#define SNDRV_OPL3_ST_NOT_AVAIL -1 /* voice is not available */
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unsigned int time; /* An allocation time */
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unsigned char note; /* Note currently assigned to this voice */
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unsigned long note_off; /* note-off time */
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int note_off_check; /* check note-off time */
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unsigned char keyon_reg; /* KON register shadow */
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struct snd_midi_channel *chan; /* Midi channel for this note */
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};
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struct snd_opl3 {
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unsigned long l_port;
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unsigned long r_port;
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struct resource *res_l_port;
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struct resource *res_r_port;
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unsigned short hardware;
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/* hardware access */
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void (*command) (struct snd_opl3 * opl3, unsigned short cmd, unsigned char val);
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unsigned short timer_enable;
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int seq_dev_num; /* sequencer device number */
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struct snd_timer *timer1;
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struct snd_timer *timer2;
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spinlock_t timer_lock;
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void *private_data;
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void (*private_free)(struct snd_opl3 *);
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struct snd_hwdep *hwdep;
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spinlock_t reg_lock;
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struct snd_card *card; /* The card that this belongs to */
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unsigned char fm_mode; /* OPL mode, see SNDRV_DM_FM_MODE_XXX */
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unsigned char rhythm; /* percussion mode flag */
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unsigned char max_voices; /* max number of voices */
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#if IS_ENABLED(CONFIG_SND_SEQUENCER)
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#define SNDRV_OPL3_MODE_SYNTH 0 /* OSS - voices allocated by application */
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#define SNDRV_OPL3_MODE_SEQ 1 /* ALSA - driver handles voice allocation */
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int synth_mode; /* synth mode */
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int seq_client;
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struct snd_seq_device *seq_dev; /* sequencer device */
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struct snd_midi_channel_set * chset;
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#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
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struct snd_seq_device *oss_seq_dev; /* OSS sequencer device */
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struct snd_midi_channel_set * oss_chset;
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#endif
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#define OPL3_PATCH_HASH_SIZE 32
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struct fm_patch *patch_table[OPL3_PATCH_HASH_SIZE];
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struct snd_opl3_voice voices[MAX_OPL3_VOICES]; /* Voices (OPL3 'channel') */
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int use_time; /* allocation counter */
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unsigned short connection_reg; /* connection reg shadow */
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unsigned char drum_reg; /* percussion reg shadow */
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spinlock_t voice_lock; /* Lock for voice access */
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struct timer_list tlist; /* timer for note-offs and effects */
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int sys_timer_status; /* system timer run status */
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spinlock_t sys_timer_lock; /* Lock for system timer access */
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#endif
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};
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/* opl3.c */
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void snd_opl3_interrupt(struct snd_hwdep * hw);
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int snd_opl3_new(struct snd_card *card, unsigned short hardware,
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struct snd_opl3 **ropl3);
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int snd_opl3_init(struct snd_opl3 *opl3);
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int snd_opl3_create(struct snd_card *card,
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unsigned long l_port, unsigned long r_port,
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unsigned short hardware,
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int integrated,
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struct snd_opl3 ** opl3);
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int snd_opl3_timer_new(struct snd_opl3 * opl3, int timer1_dev, int timer2_dev);
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int snd_opl3_hwdep_new(struct snd_opl3 * opl3, int device, int seq_device,
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struct snd_hwdep ** rhwdep);
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/* opl3_synth */
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int snd_opl3_open(struct snd_hwdep * hw, struct file *file);
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int snd_opl3_ioctl(struct snd_hwdep * hw, struct file *file,
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unsigned int cmd, unsigned long arg);
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int snd_opl3_release(struct snd_hwdep * hw, struct file *file);
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void snd_opl3_reset(struct snd_opl3 * opl3);
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#if IS_ENABLED(CONFIG_SND_SEQUENCER)
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long snd_opl3_write(struct snd_hwdep *hw, const char __user *buf, long count,
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loff_t *offset);
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int snd_opl3_load_patch(struct snd_opl3 *opl3,
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int prog, int bank, int type,
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const char *name,
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const unsigned char *ext,
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const unsigned char *data);
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struct fm_patch *snd_opl3_find_patch(struct snd_opl3 *opl3, int prog, int bank,
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int create_patch);
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void snd_opl3_clear_patches(struct snd_opl3 *opl3);
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#else
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#define snd_opl3_write NULL
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static inline void snd_opl3_clear_patches(struct snd_opl3 *opl3) {}
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#endif
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#endif /* __SOUND_OPL3_H */
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