uda1341.h

基于linux kernel 2.6.20的UDA1341声音芯片的声卡驱动

/*
 *  linux/include/linux/l3/uda1341.h
 *
 * Philips UDA1341 mixer device driver
 *
 * Copyright (c) 2000 Nicolas Pitre <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License.
 */

#include <sound/driver.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/initval.h>

#define UDA1341_NAME "uda1341"

struct uda1341_cfg {
	unsigned int fs:16;
	unsigned int format:3;
	int          record;
	int          play;
};

#define FMT_I2S		0
#define FMT_LSB16	1
#define FMT_LSB18	2
#define FMT_LSB20	3
#define FMT_MSB		4
#define FMT_LSB16MSB	5
#define FMT_LSB18MSB	6
#define FMT_LSB20MSB	7

#define L3_UDA1341_CONFIGURE	0x13410001

struct l3_gain {
	unsigned int	left:8;
	unsigned int	right:8;
	unsigned int	unused:8;
	unsigned int	channel:8;
};

#define L3_SET_VOLUME		0x13410002
#define L3_SET_TREBLE		0x13410003
#define L3_SET_BASS		0x13410004
#define L3_SET_GAIN		0x13410005

struct l3_agc {
	unsigned int	level:8;
	unsigned int	enable:1;
	unsigned int	attack:7;
	unsigned int	decay:8;
	unsigned int	channel:8;
};

#define L3_INPUT_AGC		0x13410006

struct uda1341;

int uda1341_configure(struct uda1341 *uda, struct uda1341_cfg *conf);
int uda1341_mixer_ctl(struct uda1341 *uda, int cmd, void *arg);
int uda1341_open(struct uda1341 *uda);
void uda1341_close(struct uda1341 *uda, struct uda1341_cfg *conf);

struct uda1341 *uda1341_create(snd_card_t *card, const char *adapter);