/* * ac97.h * * definitions for the AC97, Intel's Audio Codec 97 Spec * also includes support for a generic AC97 interface */ #ifndef _AC97_H_ #define _AC97_H_ #include "sound_config.h" #include "sound_calls.h" #define AC97_RESET 0x0000 // #define AC97_MASTER_VOL_STEREO 0x0002 // Line Out #define AC97_HEADPHONE_VOL 0x0004 // #define AC97_MASTER_VOL_MONO 0x0006 // TAD Output #define AC97_MASTER_TONE 0x0008 // #define AC97_PCBEEP_VOL 0x000a // none #define AC97_PHONE_VOL 0x000c // TAD Input (mono) #define AC97_MIC_VOL 0x000e // MIC Input (mono) #define AC97_LINEIN_VOL 0x0010 // Line Input (stereo) #define AC97_CD_VOL 0x0012 // CD Input (stereo) #define AC97_VIDEO_VOL 0x0014 // none #define AC97_AUX_VOL 0x0016 // Aux Input (stereo) #define AC97_PCMOUT_VOL 0x0018 // Wave Output (stereo) #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_ADC_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 /* analog section off */ /* Total number of defined registers. */ #define AC97_REG_CNT 64 /* Generic AC97 mixer interface. */ /* Structure describing access to the hardware. */ struct ac97_hwint { /* Perform any hardware-specific reset and initialization. Returns 0 on success, or a negative error code. */ int (*reset_device) (struct ac97_hwint *dev); /* Returns the contents of the specified register REG. The caller should check to see if the desired contents are available in the cache first, if applicable. Returns a positive unsigned value representing the contents of the register, or a negative error code. */ int (*read_reg) (struct ac97_hwint *dev, u8 reg); /* Writes VALUE to register REG. Returns 0 on success, or a negative error code. */ int (*write_reg) (struct ac97_hwint *dev, u8 reg, u16 value); /* Hardware-specific information. */ void *driver_private; /* Three OSS masks. */ int mixer_devmask; int mixer_stereomask; int mixer_recmask; /* The mixer cache. The indices correspond to the AC97 hardware register number / 2, since the register numbers are always an even number. Unknown values are set to -1; unsupported registers contain a -2. */ int last_written_mixer_values[AC97_REG_CNT]; /* A cache of values written via OSS; we need these so we can return the values originally written by the user. Why the original user values? Because the real-world hardware has less precision, and some existing applications assume that they will get back the exact value that they wrote (aumix). A -1 value indicates that no value has been written to this mixer channel via OSS. */ int last_written_OSS_values[SOUND_MIXER_NRDEVICES]; }; /* Values stored in the register cache. */ #define AC97_REGVAL_UNKNOWN -1 #define AC97_REG_UNSUPPORTED -2 struct ac97_mixer_value_list { /* Mixer channel to set. List is terminated by a value of -1. */ int oss_channel; /* The scaled value to set it to; values generally range from 0-100. */ union { struct { u8 left, right; } stereo; u8 mono; } value; }; /* Initialize the ac97 mixer by resetting it. */ extern int ac97_init (struct ac97_hwint *dev); /* Sets the mixer DEV to the values in VALUE_LIST. Returns 0 on success, or a negative error code. */ extern int ac97_set_values (struct ac97_hwint *dev, struct ac97_mixer_value_list *value_list); /* Writes the specified VALUE to the AC97 register REG in the mixer. Takes care of setting the last-written cache as well. */ extern int ac97_put_register (struct ac97_hwint *dev, u8 reg, u16 value); /* Default ioctl. */ extern int ac97_mixer_ioctl (struct ac97_hwint *dev, unsigned int cmd, void __user * arg); /* Do a complete reset on the AC97 mixer, restoring all mixer registers to the current values. Normally used after an APM resume event. */ extern int ac97_reset (struct ac97_hwint *dev); #endif /* * Local variables: * c-basic-offset: 4 * End: */