| Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 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 0 |
| 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 { |
| Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 72 | struct work_struct spu_dma_work; |
| Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 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 | }; |