rt-thread/bsp/qemu-vexpress-a9/drivers/audio/drv_ac97.h

/*
 * Copyright (c) 2006-2021, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-05-25     RT-Thread    the first version
 */

#ifndef __DRV_AC97_H__
#define __DRV_AC97_H__

/* Register offsets */
#define AC97_RESET              0x00
#define AC97_MASTER             0x02
#define AC97_HEADPHONE          0x04
#define AC97_MASTER_MONO        0x06
#define AC97_MASTER_TONE        0x08
#define AC97_PC_BEEP            0x0A    //mixer volume
#define AC97_PHONE              0x0C
#define AC97_MIC                0x0E    //qwert db
#define AC97_LINE               0x10
#define AC97_CD                 0x12
#define AC97_VIDEO              0x14
#define AC97_AUX                0x16
#define AC97_PCM                0x18
#define AC97_REC_SEL            0x1A    //0 represent mic
#define AC97_REC_GAIN           0x1C
#define AC97_REC_GAIN_MIC       0x1E
#define AC97_GENERAL_PURPOSE    0x20
#define AC97_3D_CONTROL         0x22
#define AC97_INT_PAGING         0x24    //qwert
#define AC97_POWERDOWN          0x26
#define AC97_PCM_FRONT_DAC_RATE 0x2c    /* PCM Front DAC Rate */
#define AC97_PCM_SURR_DAC_RATE  0x2e    /* PCM Surround DAC Rate */
#define AC97_PCM_LFE_DAC_RATE   0x30    /* PCM LFE DAC Rate */
#define AC97_PCM_LR_ADC_RATE    0x32    /* PCM LR ADC Rate */
#define AC97_PCM_MIC_ADC_RATE   0x34    /* PCM MIC ADC Rate */
#define AC97_DAC_SLOT_MAP       0x6C
#define AC97_ADC_SLOT_MAP       0x6E

void ac97_reset(void);
rt_err_t ac97_set_vol(int vol);
int ac97_get_vol(void);
rt_err_t ac97_set_rate(int rate);
int ac97_get_rate(void);

#endif