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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 | |
60 | struct 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 | |
71 | struct 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 | }; |
82 |
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Tags:
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v2.6.34-rc5
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