| /* |
| * 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: |
| */ |
