1*07d7fe7bSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */ 2198de43dSAdrian McMenamin /* aica.h 3198de43dSAdrian McMenamin * Header file for ALSA driver for 4198de43dSAdrian McMenamin * Sega Dreamcast Yamaha AICA sound 5198de43dSAdrian McMenamin * Copyright Adrian McMenamin 6198de43dSAdrian McMenamin * <adrian@mcmen.demon.co.uk> 7198de43dSAdrian McMenamin * 2006 8198de43dSAdrian McMenamin */ 9198de43dSAdrian McMenamin 10198de43dSAdrian McMenamin /* SPU memory and register constants etc */ 11198de43dSAdrian McMenamin #define G2_FIFO 0xa05f688c 12198de43dSAdrian McMenamin #define SPU_MEMORY_BASE 0xA0800000 13198de43dSAdrian McMenamin #define ARM_RESET_REGISTER 0xA0702C00 14198de43dSAdrian McMenamin #define SPU_REGISTER_BASE 0xA0700000 15198de43dSAdrian McMenamin 16198de43dSAdrian McMenamin /* AICA channels stuff */ 17198de43dSAdrian McMenamin #define AICA_CONTROL_POINT 0xA0810000 18198de43dSAdrian McMenamin #define AICA_CONTROL_CHANNEL_SAMPLE_NUMBER 0xA0810008 19198de43dSAdrian McMenamin #define AICA_CHANNEL0_CONTROL_OFFSET 0x10004 20198de43dSAdrian McMenamin 21198de43dSAdrian McMenamin /* Command values */ 22198de43dSAdrian McMenamin #define AICA_CMD_KICK 0x80000000 23198de43dSAdrian McMenamin #define AICA_CMD_NONE 0 24198de43dSAdrian McMenamin #define AICA_CMD_START 1 25198de43dSAdrian McMenamin #define AICA_CMD_STOP 2 26198de43dSAdrian McMenamin #define AICA_CMD_VOL 3 27198de43dSAdrian McMenamin 28198de43dSAdrian McMenamin /* Sound modes */ 29198de43dSAdrian McMenamin #define SM_8BIT 1 30198de43dSAdrian McMenamin #define SM_16BIT 0 31198de43dSAdrian McMenamin #define SM_ADPCM 2 32198de43dSAdrian McMenamin 33198de43dSAdrian McMenamin /* Buffer and period size */ 34198de43dSAdrian McMenamin #define AICA_BUFFER_SIZE 0x8000 35198de43dSAdrian McMenamin #define AICA_PERIOD_SIZE 0x800 36198de43dSAdrian McMenamin #define AICA_PERIOD_NUMBER 16 37198de43dSAdrian McMenamin 38198de43dSAdrian McMenamin #define AICA_CHANNEL0_OFFSET 0x11000 39198de43dSAdrian McMenamin #define AICA_CHANNEL1_OFFSET 0x21000 40198de43dSAdrian McMenamin #define CHANNEL_OFFSET 0x10000 41198de43dSAdrian McMenamin 42eb695dbfSAdrian McMenamin #define AICA_DMA_CHANNEL 5 43198de43dSAdrian McMenamin #define AICA_DMA_MODE 5 44198de43dSAdrian McMenamin 45198de43dSAdrian McMenamin #define SND_AICA_DRIVER "AICA" 46198de43dSAdrian McMenamin 47198de43dSAdrian McMenamin struct aica_channel { 48198de43dSAdrian McMenamin uint32_t cmd; /* Command ID */ 49198de43dSAdrian McMenamin uint32_t pos; /* Sample position */ 50198de43dSAdrian McMenamin uint32_t length; /* Sample length */ 51198de43dSAdrian McMenamin uint32_t freq; /* Frequency */ 52198de43dSAdrian McMenamin uint32_t vol; /* Volume 0-255 */ 53198de43dSAdrian McMenamin uint32_t pan; /* Pan 0-255 */ 54198de43dSAdrian McMenamin uint32_t sfmt; /* Sound format */ 55198de43dSAdrian McMenamin uint32_t flags; /* Bit flags */ 56198de43dSAdrian McMenamin }; 57198de43dSAdrian McMenamin 58198de43dSAdrian McMenamin struct snd_card_aica { 59d20b9b20STakashi Iwai struct work_struct spu_dma_work; 60198de43dSAdrian McMenamin struct snd_card *card; 61198de43dSAdrian McMenamin struct aica_channel *channel; 62198de43dSAdrian McMenamin struct snd_pcm_substream *substream; 63198de43dSAdrian McMenamin int clicks; 64198de43dSAdrian McMenamin int current_period; 65198de43dSAdrian McMenamin struct timer_list timer; 66198de43dSAdrian McMenamin int master_volume; 67198de43dSAdrian McMenamin int dma_check; 68198de43dSAdrian McMenamin }; 69