xref: /openbmc/linux/sound/drivers/opl4/opl4_local.h (revision 111b0cdb)
1 /*
2  * Local definitions for the OPL4 driver
3  *
4  * Copyright (c) 2003 by Clemens Ladisch <clemens@ladisch.de>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions, and the following disclaimer,
12  *    without modification.
13  * 2. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * Alternatively, this software may be distributed and/or modified under the
17  * terms of the GNU General Public License as published by the Free Software
18  * Foundation; either version 2 of the License, or (at your option) any later
19  * version.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
25  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #ifndef __OPL4_LOCAL_H
35 #define __OPL4_LOCAL_H
36 
37 #include <sound/opl4.h>
38 
39 /*
40  * Register numbers
41  */
42 
43 #define OPL4_REG_TEST0			0x00
44 #define OPL4_REG_TEST1			0x01
45 
46 #define OPL4_REG_MEMORY_CONFIGURATION	0x02
47 #define   OPL4_MODE_BIT			0x01
48 #define   OPL4_MTYPE_BIT		0x02
49 #define   OPL4_TONE_HEADER_MASK		0x1c
50 #define   OPL4_DEVICE_ID_MASK		0xe0
51 
52 #define OPL4_REG_MEMORY_ADDRESS_HIGH	0x03
53 #define OPL4_REG_MEMORY_ADDRESS_MID	0x04
54 #define OPL4_REG_MEMORY_ADDRESS_LOW	0x05
55 #define OPL4_REG_MEMORY_DATA		0x06
56 
57 /*
58  * Offsets to the register banks for voices. To get the
59  * register number just add the voice number to the bank offset.
60  *
61  * Wave Table Number low bits (0x08 to 0x1F)
62  */
63 #define OPL4_REG_TONE_NUMBER		0x08
64 
65 /* Wave Table Number high bit, F-Number low bits (0x20 to 0x37) */
66 #define OPL4_REG_F_NUMBER		0x20
67 #define   OPL4_TONE_NUMBER_BIT8		0x01
68 #define   OPL4_F_NUMBER_LOW_MASK	0xfe
69 
70 /* F-Number high bits, Octave, Pseudo-Reverb (0x38 to 0x4F) */
71 #define OPL4_REG_OCTAVE			0x38
72 #define   OPL4_F_NUMBER_HIGH_MASK	0x07
73 #define   OPL4_BLOCK_MASK		0xf0
74 #define   OPL4_PSEUDO_REVERB_BIT	0x08
75 
76 /* Total Level, Level Direct (0x50 to 0x67) */
77 #define OPL4_REG_LEVEL			0x50
78 #define   OPL4_TOTAL_LEVEL_MASK		0xfe
79 #define   OPL4_LEVEL_DIRECT_BIT		0x01
80 
81 /* Key On, Damp, LFO RST, CH, Panpot (0x68 to 0x7F) */
82 #define OPL4_REG_MISC			0x68
83 #define   OPL4_KEY_ON_BIT		0x80
84 #define   OPL4_DAMP_BIT			0x40
85 #define   OPL4_LFO_RESET_BIT		0x20
86 #define   OPL4_OUTPUT_CHANNEL_BIT	0x10
87 #define   OPL4_PAN_POT_MASK		0x0f
88 
89 /* LFO, VIB (0x80 to 0x97) */
90 #define OPL4_REG_LFO_VIBRATO		0x80
91 #define   OPL4_LFO_FREQUENCY_MASK	0x38
92 #define   OPL4_VIBRATO_DEPTH_MASK	0x07
93 #define   OPL4_CHORUS_SEND_MASK		0xc0 /* ML only */
94 
95 /* Attack / Decay 1 rate (0x98 to 0xAF) */
96 #define OPL4_REG_ATTACK_DECAY1		0x98
97 #define   OPL4_ATTACK_RATE_MASK		0xf0
98 #define   OPL4_DECAY1_RATE_MASK		0x0f
99 
100 /* Decay level / 2 rate (0xB0 to 0xC7) */
101 #define OPL4_REG_LEVEL_DECAY2		0xb0
102 #define   OPL4_DECAY_LEVEL_MASK		0xf0
103 #define   OPL4_DECAY2_RATE_MASK		0x0f
104 
105 /* Release rate / Rate correction (0xC8 to 0xDF) */
106 #define OPL4_REG_RELEASE_CORRECTION	0xc8
107 #define   OPL4_RELEASE_RATE_MASK	0x0f
108 #define   OPL4_RATE_INTERPOLATION_MASK	0xf0
109 
110 /* AM (0xE0 to 0xF7) */
111 #define OPL4_REG_TREMOLO		0xe0
112 #define   OPL4_TREMOLO_DEPTH_MASK	0x07
113 #define   OPL4_REVERB_SEND_MASK		0xe0 /* ML only */
114 
115 /* Mixer */
116 #define OPL4_REG_MIX_CONTROL_FM		0xf8
117 #define OPL4_REG_MIX_CONTROL_PCM	0xf9
118 #define   OPL4_MIX_LEFT_MASK		0x07
119 #define   OPL4_MIX_RIGHT_MASK		0x38
120 
121 #define OPL4_REG_ATC			0xfa
122 #define   OPL4_ATC_BIT			0x01 /* ???, ML only */
123 
124 /* bits in the OPL3 Status register */
125 #define OPL4_STATUS_BUSY		0x01
126 #define OPL4_STATUS_LOAD		0x02
127 
128 
129 #define OPL4_MAX_VOICES 24
130 
131 #define SNDRV_SEQ_DEV_ID_OPL4 "opl4-synth"
132 
133 
134 struct opl4_sound {
135 	u16 tone;
136 	s16 pitch_offset;
137 	u8 key_scaling;
138 	s8 panpot;
139 	u8 vibrato;
140 	u8 tone_attenuate;
141 	u8 volume_factor;
142 	u8 reg_lfo_vibrato;
143 	u8 reg_attack_decay1;
144 	u8 reg_level_decay2;
145 	u8 reg_release_correction;
146 	u8 reg_tremolo;
147 };
148 
149 struct opl4_region {
150 	u8 key_min, key_max;
151 	struct opl4_sound sound;
152 };
153 
154 struct opl4_region_ptr {
155 	int count;
156 	const struct opl4_region *regions;
157 };
158 
159 struct opl4_voice {
160 	struct list_head list;
161 	int number;
162 	struct snd_midi_channel *chan;
163 	int note;
164 	int velocity;
165 	const struct opl4_sound *sound;
166 	u8 level_direct;
167 	u8 reg_f_number;
168 	u8 reg_misc;
169 	u8 reg_lfo_vibrato;
170 };
171 
172 struct snd_opl4 {
173 	unsigned long fm_port;
174 	unsigned long pcm_port;
175 	struct resource *res_fm_port;
176 	struct resource *res_pcm_port;
177 	unsigned short hardware;
178 	spinlock_t reg_lock;
179 	struct snd_card *card;
180 
181 #ifdef CONFIG_SND_PROC_FS
182 	struct snd_info_entry *proc_entry;
183 	int memory_access;
184 #endif
185 	struct mutex access_mutex;
186 
187 #if IS_ENABLED(CONFIG_SND_SEQUENCER)
188 	int used;
189 
190 	int seq_dev_num;
191 	int seq_client;
192 	struct snd_seq_device *seq_dev;
193 
194 	struct snd_midi_channel_set *chset;
195 	struct opl4_voice voices[OPL4_MAX_VOICES];
196 	struct list_head off_voices;
197 	struct list_head on_voices;
198 #endif
199 };
200 
201 /* opl4_lib.c */
202 void snd_opl4_write(struct snd_opl4 *opl4, u8 reg, u8 value);
203 u8 snd_opl4_read(struct snd_opl4 *opl4, u8 reg);
204 void snd_opl4_read_memory(struct snd_opl4 *opl4, char *buf, int offset, int size);
205 void snd_opl4_write_memory(struct snd_opl4 *opl4, const char *buf, int offset, int size);
206 
207 /* opl4_mixer.c */
208 int snd_opl4_create_mixer(struct snd_opl4 *opl4);
209 
210 #ifdef CONFIG_SND_PROC_FS
211 /* opl4_proc.c */
212 int snd_opl4_create_proc(struct snd_opl4 *opl4);
213 void snd_opl4_free_proc(struct snd_opl4 *opl4);
214 #else
snd_opl4_create_proc(struct snd_opl4 * opl4)215 static inline int snd_opl4_create_proc(struct snd_opl4 *opl4) { return 0; }
snd_opl4_free_proc(struct snd_opl4 * opl4)216 static inline void snd_opl4_free_proc(struct snd_opl4 *opl4) {}
217 #endif
218 
219 /* opl4_seq.c */
220 extern int volume_boost;
221 
222 /* opl4_synth.c */
223 void snd_opl4_synth_reset(struct snd_opl4 *opl4);
224 void snd_opl4_synth_shutdown(struct snd_opl4 *opl4);
225 void snd_opl4_note_on(void *p, int note, int vel, struct snd_midi_channel *chan);
226 void snd_opl4_note_off(void *p, int note, int vel, struct snd_midi_channel *chan);
227 void snd_opl4_terminate_note(void *p, int note, struct snd_midi_channel *chan);
228 void snd_opl4_control(void *p, int type, struct snd_midi_channel *chan);
229 void snd_opl4_sysex(void *p, unsigned char *buf, int len, int parsed, struct snd_midi_channel_set *chset);
230 
231 /* yrw801.c */
232 int snd_yrw801_detect(struct snd_opl4 *opl4);
233 extern const struct opl4_region_ptr snd_yrw801_regions[];
234 
235 #endif /* __OPL4_LOCAL_H */
236