1/* SPDX-License-Identifier: GPL-2.0-only */
 2/* aica.h
 3 * Header file for ALSA driver for
 4 * Sega Dreamcast Yamaha AICA sound
 5 * Copyright Adrian McMenamin
 6 * <adrian@mcmen.demon.co.uk>
 7 * 2006
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 8 */
 9
10/* SPU memory and register constants etc */
11#define G2_FIFO 0xa05f688c
12#define SPU_MEMORY_BASE 0xA0800000
13#define ARM_RESET_REGISTER 0xA0702C00
14#define SPU_REGISTER_BASE 0xA0700000
15
16/* AICA channels stuff */
17#define AICA_CONTROL_POINT 0xA0810000
18#define AICA_CONTROL_CHANNEL_SAMPLE_NUMBER 0xA0810008
19#define AICA_CHANNEL0_CONTROL_OFFSET 0x10004
20
21/* Command values */
22#define AICA_CMD_KICK 0x80000000
23#define AICA_CMD_NONE 0
24#define AICA_CMD_START 1
25#define AICA_CMD_STOP 2
26#define AICA_CMD_VOL 3
27
28/* Sound modes */
29#define SM_8BIT		1
30#define SM_16BIT	0
31#define SM_ADPCM	2
32
33/* Buffer and period size */
34#define AICA_BUFFER_SIZE 0x8000
35#define AICA_PERIOD_SIZE 0x800
36#define AICA_PERIOD_NUMBER 16
37
38#define AICA_CHANNEL0_OFFSET 0x11000
39#define AICA_CHANNEL1_OFFSET 0x21000
40#define CHANNEL_OFFSET 0x10000
41
42#define AICA_DMA_CHANNEL 5
43#define AICA_DMA_MODE 5
44
45#define SND_AICA_DRIVER "AICA"
46
47struct aica_channel {
48	uint32_t cmd;		/* Command ID           */
49	uint32_t pos;		/* Sample position      */
50	uint32_t length;	/* Sample length        */
51	uint32_t freq;		/* Frequency            */
52	uint32_t vol;		/* Volume 0-255         */
53	uint32_t pan;		/* Pan 0-255            */
54	uint32_t sfmt;		/* Sound format         */
55	uint32_t flags;		/* Bit flags            */
56};
57
58struct snd_card_aica {
59	struct work_struct spu_dma_work;
60	struct snd_card *card;
61	struct aica_channel *channel;
62	struct snd_pcm_substream *substream;
63	int clicks;
64	int current_period;
65	struct timer_list timer;
66	int master_volume;
67	int dma_check;
68};

 
 1/* aica.h
 2 * Header file for ALSA driver for
 3 * Sega Dreamcast Yamaha AICA sound
 4 * Copyright Adrian McMenamin
 5 * <adrian@mcmen.demon.co.uk>
 6 * 2006
 7 *
 8 * This program is free software; you can redistribute it and/or modify
 9 * it under the terms of version 2 of the GNU General Public License as published by
10 * the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20 *
21 */
22
23/* SPU memory and register constants etc */
24#define G2_FIFO 0xa05f688c
25#define SPU_MEMORY_BASE 0xA0800000
26#define ARM_RESET_REGISTER 0xA0702C00
27#define SPU_REGISTER_BASE 0xA0700000
28
29/* AICA channels stuff */
30#define AICA_CONTROL_POINT 0xA0810000
31#define AICA_CONTROL_CHANNEL_SAMPLE_NUMBER 0xA0810008
32#define AICA_CHANNEL0_CONTROL_OFFSET 0x10004
33
34/* Command values */
35#define AICA_CMD_KICK 0x80000000
36#define AICA_CMD_NONE 0
37#define AICA_CMD_START 1
38#define AICA_CMD_STOP 2
39#define AICA_CMD_VOL 3
40
41/* Sound modes */
42#define SM_8BIT		1
43#define SM_16BIT	0
44#define SM_ADPCM	2
45
46/* Buffer and period size */
47#define AICA_BUFFER_SIZE 0x8000
48#define AICA_PERIOD_SIZE 0x800
49#define AICA_PERIOD_NUMBER 16
50
51#define AICA_CHANNEL0_OFFSET 0x11000
52#define AICA_CHANNEL1_OFFSET 0x21000
53#define CHANNEL_OFFSET 0x10000
54
55#define AICA_DMA_CHANNEL 5
56#define AICA_DMA_MODE 5
57
58#define SND_AICA_DRIVER "AICA"
59
60struct aica_channel {
61	uint32_t cmd;		/* Command ID           */
62	uint32_t pos;		/* Sample position      */
63	uint32_t length;	/* Sample length        */
64	uint32_t freq;		/* Frequency            */
65	uint32_t vol;		/* Volume 0-255         */
66	uint32_t pan;		/* Pan 0-255            */
67	uint32_t sfmt;		/* Sound format         */
68	uint32_t flags;		/* Bit flags            */
69};
70
71struct snd_card_aica {
72	struct work_struct spu_dma_work;
73	struct snd_card *card;
74	struct aica_channel *channel;
75	struct snd_pcm_substream *substream;
76	int clicks;
77	int current_period;
78	struct timer_list timer;
79	int master_volume;
80	int dma_check;
81};