projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 198de43d AM |
1 | /* aica.h |
| 2 | * Header file for ALSA driver for | |
| 3 | * Sega Dreamcast Yamaha AICA sound | |
| 4 | * Copyright Adrian McMenamin | |
| 5 | * <[email protected]> | |
| 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 | ||
| eb695dbf | 55 | #define AICA_DMA_CHANNEL 5 |
| 198de43d AM |
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 { | |
| d20b9b20 | 72 | struct work_struct spu_dma_work; |
| 198de43d AM |
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 | }; |