1 #ifndef AC97_MIXER_H 2 #define AC97_MIXER_H 3 4 /* This is a main memory cache copy of the codec's ac97 configuration 5 registers. See Intel's Audio Codec 97 standard (rev2.3) for info. */ 6 7 typedef struct ac97_struct { 8 u16_t Reset; /* 0x00 */ 9 u16_t MasterVolume; /* 0x02 */ 10 u16_t AUXOutVolume; /* 0x04 */ 11 u16_t MonoVolume; /* 0x06 */ 12 u16_t MasterTone; /* 0x08 */ 13 u16_t PCBeepVolume; /* 0x0A */ 14 u16_t PhoneVolume; /* 0x0C */ 15 u16_t MicVolume; /* 0x0E */ 16 u16_t LineInVolume; /* 0x10 */ 17 u16_t CDVolume; /* 0x12 */ 18 u16_t VideoVolume; /* 0x14 */ 19 u16_t AUXInVolume; /* 0x16 */ 20 u16_t PCMOutVolume; /* 0x18 */ 21 u16_t RecordSelect; /* 0x1A */ 22 u16_t RecordGain; /* 0x1C */ 23 u16_t RecordGainMic; /* 0x1E */ 24 u16_t GeneralPurpose; /* 0x20 */ 25 u16_t Control3D; /* 0x22 */ 26 u16_t AudioIntAndPaging; /* 0x24 */ 27 u16_t PowerdownControlAndStat; /* 0x26 */ 28 u16_t ExtendedAudio1; /* 0x28 */ 29 u16_t ExtendedAudio2; /* 0x2A */ 30 /* ... */ 31 u16_t VendorID1; /* 0x7C */ 32 u16_t VendorID2; /* 0x7E */ 33 } ac97_t; 34 35 36 37 /* Source and output volume control register defines */ 38 #define AC97_MASTER_VOLUME 0x02U /* Master out */ 39 #define AC97_AUX_OUT_VOLUME 0x04U /* Auxiliary out volume */ 40 #define AC97_MONO_VOLUME 0x06U /* Mono out volume */ 41 #define AC97_MASTER_TONE 0x08U /* high byte= bass, low byte= treble*/ 42 #define AC97_PC_BEEP_VOLUME 0x0aU /* PC speaker volume */ 43 #define AC97_PHONE_VOLUME 0x0cU /* Phone volume */ 44 #define AC97_MIC_VOLUME 0x0eU /* Mic, mono */ 45 #define AC97_LINE_IN_VOLUME 0x10U /* Line volume */ 46 #define AC97_CD_VOLUME 0x12U /* CD audio volume */ 47 #define AC97_VIDEO_VOLUME 0x14U /* Video (TV) volume */ 48 #define AC97_AUX_IN_VOLUME 0x16U /* Aux line source, left */ 49 #define AC97_PCM_OUT_VOLUME 0x18U /* The DACs - wav+synth */ 50 #define AC97_RECORD_GAIN_VOLUME 0x1cU /* Record input level */ 51 52 /* Other CODEC control register defines */ 53 #define AC97_RESET 0x00U /* any write here to reset CODEC */ 54 #define AC97_GENERAL_PURPOSE 0x20U /* */ 55 #define AC97_POWERDOWN_CONTROL_STAT 0x26U /* */ 56 #define AC97_RECORD_SELECT 0x1aU /* record mux select */ 57 #define AC97_VENDOR_ID1 0x7cU /* 1st two Vendor ID bytes */ 58 #define AC97_VENDOR_ID2 0x7eU /* last Vendor ID byte plus rev. number */ 59 60 /* Record Select defines */ 61 #define AC97_RECORD_MIC 0 62 #define AC97_RECORD_CD 1 63 #define AC97_RECORD_VIDEO 2 64 #define AC97_RECORD_AUX 3 65 #define AC97_RECORD_LINE 4 66 #define AC97_RECORD_STEREO_MIX 5 67 #define AC97_RECORD_MONO_MIX 6 68 #define AC97_RECORD_PHONE 7 69 70 #define MASTER_VOL_MASK 0x1F 71 #define DAC_VOL_MASK 0x1F 72 #define AUX_IN_VOL_MASK 0x1F 73 #define MUTE_MASK 0x8000 74 #endif /* AC97_MIXER_H */ 75