1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* aica.h 3*4882a593Smuzhiyun * Header file for ALSA driver for 4*4882a593Smuzhiyun * Sega Dreamcast Yamaha AICA sound 5*4882a593Smuzhiyun * Copyright Adrian McMenamin 6*4882a593Smuzhiyun * <adrian@mcmen.demon.co.uk> 7*4882a593Smuzhiyun * 2006 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun /* SPU memory and register constants etc */ 11*4882a593Smuzhiyun #define G2_FIFO 0xa05f688c 12*4882a593Smuzhiyun #define SPU_MEMORY_BASE 0xA0800000 13*4882a593Smuzhiyun #define ARM_RESET_REGISTER 0xA0702C00 14*4882a593Smuzhiyun #define SPU_REGISTER_BASE 0xA0700000 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /* AICA channels stuff */ 17*4882a593Smuzhiyun #define AICA_CONTROL_POINT 0xA0810000 18*4882a593Smuzhiyun #define AICA_CONTROL_CHANNEL_SAMPLE_NUMBER 0xA0810008 19*4882a593Smuzhiyun #define AICA_CHANNEL0_CONTROL_OFFSET 0x10004 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun /* Command values */ 22*4882a593Smuzhiyun #define AICA_CMD_KICK 0x80000000 23*4882a593Smuzhiyun #define AICA_CMD_NONE 0 24*4882a593Smuzhiyun #define AICA_CMD_START 1 25*4882a593Smuzhiyun #define AICA_CMD_STOP 2 26*4882a593Smuzhiyun #define AICA_CMD_VOL 3 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun /* Sound modes */ 29*4882a593Smuzhiyun #define SM_8BIT 1 30*4882a593Smuzhiyun #define SM_16BIT 0 31*4882a593Smuzhiyun #define SM_ADPCM 2 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun /* Buffer and period size */ 34*4882a593Smuzhiyun #define AICA_BUFFER_SIZE 0x8000 35*4882a593Smuzhiyun #define AICA_PERIOD_SIZE 0x800 36*4882a593Smuzhiyun #define AICA_PERIOD_NUMBER 16 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun #define AICA_CHANNEL0_OFFSET 0x11000 39*4882a593Smuzhiyun #define AICA_CHANNEL1_OFFSET 0x21000 40*4882a593Smuzhiyun #define CHANNEL_OFFSET 0x10000 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #define AICA_DMA_CHANNEL 5 43*4882a593Smuzhiyun #define AICA_DMA_MODE 5 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #define SND_AICA_DRIVER "AICA" 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun struct aica_channel { 48*4882a593Smuzhiyun uint32_t cmd; /* Command ID */ 49*4882a593Smuzhiyun uint32_t pos; /* Sample position */ 50*4882a593Smuzhiyun uint32_t length; /* Sample length */ 51*4882a593Smuzhiyun uint32_t freq; /* Frequency */ 52*4882a593Smuzhiyun uint32_t vol; /* Volume 0-255 */ 53*4882a593Smuzhiyun uint32_t pan; /* Pan 0-255 */ 54*4882a593Smuzhiyun uint32_t sfmt; /* Sound format */ 55*4882a593Smuzhiyun uint32_t flags; /* Bit flags */ 56*4882a593Smuzhiyun }; 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun struct snd_card_aica { 59*4882a593Smuzhiyun struct work_struct spu_dma_work; 60*4882a593Smuzhiyun struct snd_card *card; 61*4882a593Smuzhiyun struct aica_channel *channel; 62*4882a593Smuzhiyun struct snd_pcm_substream *substream; 63*4882a593Smuzhiyun int clicks; 64*4882a593Smuzhiyun int current_period; 65*4882a593Smuzhiyun struct timer_list timer; 66*4882a593Smuzhiyun int master_volume; 67*4882a593Smuzhiyun int dma_check; 68*4882a593Smuzhiyun }; 69