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/*
* Purpose: Definitions for the via8233 driver
*/
/*
*
* This file is part of Open Sound System.
*
* Copyright (C) 4Front Technologies 1996-2008.
*
* This this source file is released under GPL v2 license (no other versions).
* See the COPYING file included in the main directory of this source
* distribution for the license terms and conditions.
*
*/
#define VIA_VENDOR_ID 0x1106
#define VIA_8233_ID 0x3059
#define VIA_8233A_ID 0x7059
#define PLAY_SGD_NUM 1
#define REC_SGD_NUM 0
#define MAX_ENGINES 2
#define MAX_PORTC 2
#define SGD_SIZE 256
#define SGD_ALLOC 4096
#define SGD_EOL 0x80000000
#define SGD_FLAG 0x40000000
#define CODEC_TIMEOUT_COUNT 500
#define AC97CODEC 0x80 /*Access AC97 Codec */
#define IN_CMD 0x01000000 /*busy in sending */
#define STA_VALID 0x02000000 /*1:status data is valid */
#define CODEC_RD 0x00800000 /*Read CODEC status */
#define CODEC_INDEX 0x007F0000 /*Index of command register to access */
#define CODEC_DATA 0x0000FFFF /*AC97 status register data */
typedef struct
{
unsigned int phaddr;
unsigned int flags;
}
SGD_entry;
struct via8233_portc;
typedef struct
{
int sgd_num, base;
oss_dma_handle_t sgd_dma_handle;
int mode;
SGD_entry *sgd;
oss_native_word sgd_phys;
int sgd_ptr;
int prev_sgd;
int cfrag;
unsigned int prevpos;
short frags[SGD_SIZE];
struct via8233_portc *portc;
}
engine_desc;
typedef struct via8233_portc
{
int audiodev;
int open_mode;
int mode_mask;
int speed, bits, channels;
engine_desc *play_engine, *rec_engine;
int trigger_bits;
int audio_enabled;
}
via8233_portc;
typedef struct via8233_devc
{
oss_device_t *osdev;
int chip_type;
#define CHIP_8233 0
#define CHIP_8233A 1
char *chip_name;
int multi_channel_active;
oss_native_word base;
int irq;
int open_mode;
oss_mutex_t mutex; /* For normal locking */
oss_mutex_t low_mutex; /* For low level routines */
/*
* Mixer
*/
ac97_devc ac97devc;
int mixer_dev;
via8233_portc portc[MAX_PORTC];
engine_desc engines[MAX_ENGINES];
}
via8233_devc;
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