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Commit | Line | Data |
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07d7fe7b | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
198de43d AM |
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 | |
198de43d AM |
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 | ||
eb695dbf | 42 | #define AICA_DMA_CHANNEL 5 |
198de43d AM |
43 | #define AICA_DMA_MODE 5 |
44 | ||
45 | #define SND_AICA_DRIVER "AICA" | |
46 | ||
47 | struct 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 | ||
58 | struct snd_card_aica { | |
d20b9b20 | 59 | struct work_struct spu_dma_work; |
198de43d AM |
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 | }; |