ac97.h
资源名称:ixp425BSP.rar [点击查看]
上传用户:luoyougen
上传日期:2008-05-12
资源大小:23136k
文件大小:7k
源码类别:
VxWorks
开发平台:
C/C++
- /* ac97.h - AC97 header file */
- /* Copyright 2000 Wind River Systems, Inc. */
- /*
- modification history
- --------------------
- 01c,18apr01,dmh public api provided for manually adjusting codec registers
- 01b,31oct00,dmh extended to support ac97mixer.c
- 01a,14mar00,jlb written.
- */
- #ifndef __INCac97h
- #define __INCac97h
- #include <iosLib.h>
- #include <semLib.h>
- #if __cplusplus
- extern "C" {
- #endif
- /*
- DESCRIPTION
- This file provides definitions for the Intel Audio Codec 97
- */
- #define AC97_RESET 0x0000 /* Reset */
- #define AC97_MASTER_VOL_STEREO 0x0002 /* Line Out */
- #define AC97_HEADPHONE_VOL 0x0004
- #define AC97_MASTER_VOL_MONO 0x0006
- #define AC97_MASTER_TONE 0x0008
- #define AC97_PCBEEP_VOL 0x000a
- #define AC97_PHONE_VOL 0x000c
- #define AC97_MIC_VOL 0x000e
- #define AC97_LINEIN_VOL 0x0010
- #define AC97_CD_VOL 0x0012
- #define AC97_VIDEO_VOL 0x0014
- #define AC97_AUX_VOL 0x0016
- #define AC97_PCMOUT_VOL 0x0018
- #define AC97_RECORD_SELECT 0x001a
- #define AC97_RECORD_GAIN 0x001c
- #define AC97_RECORD_GAIN_MIC 0x001e
- #define AC97_GENERAL_PURPOSE 0x0020
- #define AC97_3D_CONTROL 0x0022
- #define AC97_MODEM_RATE 0x0024
- #define AC97_POWER_CONTROL 0x0026
- /* registers 0x0028 - 0x0058 are reserved */
- /* AC'97 2.0 */
- #define AC97_EXTENDED_ID 0x0028 /* Extended Audio ID */
- #define AC97_EXTENDED_STATUS 0x002A /* Extended Audio Status */
- #define AC97_PCM_FRONT_DAC_RATE 0x002C /* PCM Front DAC Rate */
- #define AC97_PCM_SURR_DAC_RATE 0x002E /* PCM Surround DAC Rate */
- #define AC97_PCM_LFE_DAC_RATE 0x0030 /* PCM LFE DAC Rate */
- #define AC97_PCM_LR_DAC_RATE 0x0032 /* PCM LR DAC Rate */
- #define AC97_PCM_MIC_ADC_RATE 0x0034 /* PCM MIC ADC Rate */
- #define AC97_CENTER_LFE_MASTER 0x0036 /* Center + LFE Master Volume */
- #define AC97_SURROUND_MASTER 0x0038 /* Surround (Rear) Master Volume */
- #define AC97_RESERVED_3A 0x003A /* Reserved */
- /* range 0x3c-0x58 - MODEM */
- /* registers 0x005a - 0x007a are vendor reserved */
- #define AC97_VENDOR_ID1 0x007c
- #define AC97_VENDOR_ID2 0x007e
- /* volume control bit defines */
- #define AC97_MUTE 0x8000
- #define AC97_MICBOOST 0x0040
- #define AC97_LEFTVOL 0x3f00
- #define AC97_RIGHTVOL 0x003f
- /* record mux defines */
- #define AC97_RECMUX_MIC 0x0000
- #define AC97_RECMUX_CD 0x0101
- #define AC97_RECMUX_VIDEO 0x0202 /* not used */
- #define AC97_RECMUX_AUX 0x0303
- #define AC97_RECMUX_LINE 0x0404
- #define AC97_RECMUX_STEREO_MIX 0x0505
- #define AC97_RECMUX_MONO_MIX 0x0606
- #define AC97_RECMUX_PHONE 0x0707
- /* general purpose register bit defines */
- #define AC97_GP_LPBK 0x0080 /* Loopback mode */
- #define AC97_GP_MS 0x0100 /* Mic Select 0=Mic1, 1=Mic2 */
- #define AC97_GP_MIX 0x0200 /* Mono output select 0=Mix, 1=Mic */
- #define AC97_GP_RLBK 0x0400 /* Remote Loopback - Modem line codec */
- #define AC97_GP_LLBK 0x0800 /* Local Loopback - Modem Line codec */
- #define AC97_GP_LD 0x1000 /* Loudness 1=on */
- #define AC97_GP_3D 0x2000 /* 3D Enhancement 1=on */
- #define AC97_GP_ST 0x4000 /* Stereo Enhancement 1=on */
- #define AC97_GP_POP 0x8000 /* Pcm Out Path, 0=pre 3D, 1=post 3D */
- /* powerdown control and status bit defines */
- /* status */
- #define AC97_PWR_MDM 0x0010 /* Modem section ready */
- #define AC97_PWR_REF 0x0008 /* Vref nominal */
- #define AC97_PWR_ANL 0x0004 /* Analog section ready */
- #define AC97_PWR_DAC 0x0002 /* DAC section ready */
- #define AC97_PWR_ADC 0x0001 /* ADC section ready */
- /* control */
- #define AC97_PWR_PR0 0x0100 /* ADC and Mux powerdown */
- #define AC97_PWR_PR1 0x0200 /* DAC powerdown */
- #define AC97_PWR_PR2 0x0400 /* Output mixer powerdown (Vref on) */
- #define AC97_PWR_PR3 0x0800 /* Output mixer powerdown (Vref off) */
- #define AC97_PWR_PR4 0x1000 /* AC-link powerdown */
- #define AC97_PWR_PR5 0x2000 /* Internal Clk disable */
- #define AC97_PWR_PR6 0x4000 /* HP amp powerdown */
- #define AC97_PWR_PR7 0x8000 /* Modem off - if supported */
- /* useful power states */
- #define AC97_PWR_D0 0x0000 /* everything on */
- #define AC97_PWR_D1 AC97_PWR_PR0 | AC97_PWR_PR1 | AC97_PWR_PR4
- #define AC97_PWR_D2 AC97_PWR_PR0 | AC97_PWR_PR1 |
- AC97_PWR_PR2 | AC97_PWR_PR3 | AC97_PWR_PR4
- #define AC97_PWR_D3 AC97_PWR_PR0 | AC97_PWR_PR1 |
- AC97_PWR_PR2 | AC97_PWR_PR3 | AC97_PWR_PR4
- #define AC97_PWR_ANLOFF AC97_PWR_PR2 | AC97_PWR_PR3
- /* Total number of defined registers. */
- #define AC97_REG_CNT 64
- struct ac97_dev;
- struct ac97mixtable_entry;
- struct ac97_fd;
- typedef struct ac97mixtable_entry
- {
- int reg:8;
- unsigned bits:4;
- unsigned ofs:4;
- unsigned stereo:1;
- unsigned mute:1;
- unsigned recidx:4;
- unsigned mask:1;
- } AC97MIXTABLE_ENTRY;
- typedef struct ac97_fd
- {
- struct ac97_dev * pDev;
- UINT32 devs;
- UINT32 recSrc;
- UINT32 recDevs;
- SEM_ID semId;
- } AC97_FD;
- typedef struct ac97_dev
- {
- DEV_HDR devHdr;
- FUNCPTR init;
- FUNCPTR read;
- FUNCPTR write;
- UINT32 key;
- AC97MIXTABLE_ENTRY mix[32];
- AC97_FD mixer_fd;
- } AC97_DEV;
- #ifndef AC97MIXER_C
- /* public api for custom applications
- note: an AC97_DEV* may be obtained using iosDevFind,
- iosNextDevGet, or iosFdDevFind*/
- extern void ac97Write(AC97_DEV * pDev, UINT32 reg, UINT16 val);
- extern UINT16 ac97Read(AC97_DEV * pDev, UINT32 reg);
- /* api to be used only by sound controller drivers
- since only sound controllers understand how to read
- and write to AC97 registers */
- extern STATUS ac97MixerDrv();
- extern AC97_DEV* ac97MixerDevCreate(DEV_HDR* pDev, FUNCPTR rd, FUNCPTR wr);
- #else
- STATUS ac97MixerDrv();
- AC97_DEV* ac97MixerDevCreate(DEV_HDR* pDev, FUNCPTR rd, FUNCPTR wr);
- void ac97Write(AC97_DEV * pDev, UINT32 reg, UINT16 val);
- UINT16 ac97Read(AC97_DEV * pDev, UINT32 reg);
- #endif
- #if __cplusplus
- } /* extern "C" */
- #endif
- #endif /* __INCac97h */