projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * ac97.h | |
| 3 | * | |
| 4 | * definitions for the AC97, Intel's Audio Codec 97 Spec | |
| 5 | * also includes support for a generic AC97 interface | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef _AC97_H_ | |
| 9 | #define _AC97_H_ | |
| 10 | #include "sound_config.h" | |
| 11 | #include "sound_calls.h" | |
| 12 | ||
| 13 | #define AC97_RESET 0x0000 // | |
| 14 | #define AC97_MASTER_VOL_STEREO 0x0002 // Line Out | |
| 15 | #define AC97_HEADPHONE_VOL 0x0004 // | |
| 16 | #define AC97_MASTER_VOL_MONO 0x0006 // TAD Output | |
| 17 | #define AC97_MASTER_TONE 0x0008 // | |
| 18 | #define AC97_PCBEEP_VOL 0x000a // none | |
| 19 | #define AC97_PHONE_VOL 0x000c // TAD Input (mono) | |
| 20 | #define AC97_MIC_VOL 0x000e // MIC Input (mono) | |
| 21 | #define AC97_LINEIN_VOL 0x0010 // Line Input (stereo) | |
| 22 | #define AC97_CD_VOL 0x0012 // CD Input (stereo) | |
| 23 | #define AC97_VIDEO_VOL 0x0014 // none | |
| 24 | #define AC97_AUX_VOL 0x0016 // Aux Input (stereo) | |
| 25 | #define AC97_PCMOUT_VOL 0x0018 // Wave Output (stereo) | |
| 26 | #define AC97_RECORD_SELECT 0x001a // | |
| 27 | #define AC97_RECORD_GAIN 0x001c | |
| 28 | #define AC97_RECORD_GAIN_MIC 0x001e | |
| 29 | #define AC97_GENERAL_PURPOSE 0x0020 | |
| 30 | #define AC97_3D_CONTROL 0x0022 | |
| 31 | #define AC97_MODEM_RATE 0x0024 | |
| 32 | #define AC97_POWER_CONTROL 0x0026 | |
| 33 | ||
| 34 | /* registers 0x0028 - 0x0058 are reserved */ | |
| 35 | ||
| 36 | /* AC'97 2.0 */ | |
| 37 | #define AC97_EXTENDED_ID 0x0028 /* Extended Audio ID */ | |
| 38 | #define AC97_EXTENDED_STATUS 0x002A /* Extended Audio Status */ | |
| 39 | #define AC97_PCM_FRONT_DAC_RATE 0x002C /* PCM Front DAC Rate */ | |
| 40 | #define AC97_PCM_SURR_DAC_RATE 0x002E /* PCM Surround DAC Rate */ | |
| 41 | #define AC97_PCM_LFE_DAC_RATE 0x0030 /* PCM LFE DAC Rate */ | |
| 42 | #define AC97_PCM_LR_ADC_RATE 0x0032 /* PCM LR DAC Rate */ | |
| 43 | #define AC97_PCM_MIC_ADC_RATE 0x0034 /* PCM MIC ADC Rate */ | |
| 44 | #define AC97_CENTER_LFE_MASTER 0x0036 /* Center + LFE Master Volume */ | |
| 45 | #define AC97_SURROUND_MASTER 0x0038 /* Surround (Rear) Master Volume */ | |
| 46 | #define AC97_RESERVED_3A 0x003A /* Reserved */ | |
| 47 | /* range 0x3c-0x58 - MODEM */ | |
| 48 | ||
| 49 | /* registers 0x005a - 0x007a are vendor reserved */ | |
| 50 | ||
| 51 | #define AC97_VENDOR_ID1 0x007c | |
| 52 | #define AC97_VENDOR_ID2 0x007e | |
| 53 | ||
| 54 | /* volume control bit defines */ | |
| 55 | ||
| 56 | #define AC97_MUTE 0x8000 | |
| 57 | #define AC97_MICBOOST 0x0040 | |
| 58 | #define AC97_LEFTVOL 0x3f00 | |
| 59 | #define AC97_RIGHTVOL 0x003f | |
| 60 | ||
| 61 | /* record mux defines */ | |
| 62 | ||
| 63 | #define AC97_RECMUX_MIC 0x0000 | |
| 64 | #define AC97_RECMUX_CD 0x0101 | |
| 65 | #define AC97_RECMUX_VIDEO 0x0202 /* not used */ | |
| 66 | #define AC97_RECMUX_AUX 0x0303 | |
| 67 | #define AC97_RECMUX_LINE 0x0404 | |
| 68 | #define AC97_RECMUX_STEREO_MIX 0x0505 | |
| 69 | #define AC97_RECMUX_MONO_MIX 0x0606 | |
| 70 | #define AC97_RECMUX_PHONE 0x0707 | |
| 71 | ||
| 72 | ||
| 73 | /* general purpose register bit defines */ | |
| 74 | ||
| 75 | #define AC97_GP_LPBK 0x0080 /* Loopback mode */ | |
| 76 | #define AC97_GP_MS 0x0100 /* Mic Select 0=Mic1, 1=Mic2 */ | |
| 77 | #define AC97_GP_MIX 0x0200 /* Mono output select 0=Mix, 1=Mic */ | |
| 78 | #define AC97_GP_RLBK 0x0400 /* Remote Loopback - Modem line codec */ | |
| 79 | #define AC97_GP_LLBK 0x0800 /* Local Loopback - Modem Line codec */ | |
| 80 | #define AC97_GP_LD 0x1000 /* Loudness 1=on */ | |
| 81 | #define AC97_GP_3D 0x2000 /* 3D Enhancement 1=on */ | |
| 82 | #define AC97_GP_ST 0x4000 /* Stereo Enhancement 1=on */ | |
| 83 | #define AC97_GP_POP 0x8000 /* Pcm Out Path, 0=pre 3D, 1=post 3D */ | |
| 84 | ||
| 85 | ||
| 86 | /* powerdown control and status bit defines */ | |
| 87 | ||
| 88 | /* status */ | |
| 89 | #define AC97_PWR_MDM 0x0010 /* Modem section ready */ | |
| 90 | #define AC97_PWR_REF 0x0008 /* Vref nominal */ | |
| 91 | #define AC97_PWR_ANL 0x0004 /* Analog section ready */ | |
| 92 | #define AC97_PWR_DAC 0x0002 /* DAC section ready */ | |
| 93 | #define AC97_PWR_ADC 0x0001 /* ADC section ready */ | |
| 94 | ||
| 95 | /* control */ | |
| 96 | #define AC97_PWR_PR0 0x0100 /* ADC and Mux powerdown */ | |
| 97 | #define AC97_PWR_PR1 0x0200 /* DAC powerdown */ | |
| 98 | #define AC97_PWR_PR2 0x0400 /* Output mixer powerdown (Vref on) */ | |
| 99 | #define AC97_PWR_PR3 0x0800 /* Output mixer powerdown (Vref off) */ | |
| 100 | #define AC97_PWR_PR4 0x1000 /* AC-link powerdown */ | |
| 101 | #define AC97_PWR_PR5 0x2000 /* Internal Clk disable */ | |
| 102 | #define AC97_PWR_PR6 0x4000 /* HP amp powerdown */ | |
| 103 | #define AC97_PWR_PR7 0x8000 /* Modem off - if supported */ | |
| 104 | ||
| 105 | /* useful power states */ | |
| 106 | #define AC97_PWR_D0 0x0000 /* everything on */ | |
| 107 | #define AC97_PWR_D1 AC97_PWR_PR0|AC97_PWR_PR1|AC97_PWR_PR4 | |
| 108 | #define AC97_PWR_D2 AC97_PWR_PR0|AC97_PWR_PR1|AC97_PWR_PR2|AC97_PWR_PR3|AC97_PWR_PR4 | |
| 109 | #define AC97_PWR_D3 AC97_PWR_PR0|AC97_PWR_PR1|AC97_PWR_PR2|AC97_PWR_PR3|AC97_PWR_PR4 | |
| 110 | #define AC97_PWR_ANLOFF AC97_PWR_PR2|AC97_PWR_PR3 /* analog section off */ | |
| 111 | ||
| 112 | /* Total number of defined registers. */ | |
| 113 | #define AC97_REG_CNT 64 | |
| 114 | ||
| 115 | /* Generic AC97 mixer interface. */ | |
| 116 | ||
| 117 | /* Structure describing access to the hardware. */ | |
| 118 | struct ac97_hwint | |
| 119 | { | |
| 120 | /* Perform any hardware-specific reset and initialization. Returns | |
| 121 | 0 on success, or a negative error code. */ | |
| 122 | int (*reset_device) (struct ac97_hwint *dev); | |
| 123 | ||
| 124 | /* Returns the contents of the specified register REG. The caller | |
| 125 | should check to see if the desired contents are available in | |
| 126 | the cache first, if applicable. Returns a positive unsigned value | |
| 127 | representing the contents of the register, or a negative error | |
| 128 | code. */ | |
| 129 | int (*read_reg) (struct ac97_hwint *dev, u8 reg); | |
| 130 | ||
| 131 | /* Writes VALUE to register REG. Returns 0 on success, or a | |
| 132 | negative error code. */ | |
| 133 | int (*write_reg) (struct ac97_hwint *dev, u8 reg, u16 value); | |
| 134 | ||
| 135 | /* Hardware-specific information. */ | |
| 136 | void *driver_private; | |
| 137 | ||
| 138 | /* Three OSS masks. */ | |
| 139 | int mixer_devmask; | |
| 140 | int mixer_stereomask; | |
| 141 | int mixer_recmask; | |
| 142 | ||
| 143 | /* The mixer cache. The indices correspond to the AC97 hardware register | |
| 144 | number / 2, since the register numbers are always an even number. | |
| 145 | ||
| 146 | Unknown values are set to -1; unsupported registers contain a | |
| 147 | -2. */ | |
| 148 | int last_written_mixer_values[AC97_REG_CNT]; | |
| 149 | ||
| 150 | /* A cache of values written via OSS; we need these so we can return | |
| 151 | the values originally written by the user. | |
| 152 | ||
| 153 | Why the original user values? Because the real-world hardware | |
| 154 | has less precision, and some existing applications assume that | |
| 155 | they will get back the exact value that they wrote (aumix). | |
| 156 | ||
| 157 | A -1 value indicates that no value has been written to this mixer | |
| 158 | channel via OSS. */ | |
| 159 | int last_written_OSS_values[SOUND_MIXER_NRDEVICES]; | |
| 160 | }; | |
| 161 | ||
| 162 | /* Values stored in the register cache. */ | |
| 163 | #define AC97_REGVAL_UNKNOWN -1 | |
| 164 | #define AC97_REG_UNSUPPORTED -2 | |
| 165 | ||
| 166 | struct ac97_mixer_value_list | |
| 167 | { | |
| 168 | /* Mixer channel to set. List is terminated by a value of -1. */ | |
| 169 | int oss_channel; | |
| 170 | /* The scaled value to set it to; values generally range from 0-100. */ | |
| 171 | union { | |
| 172 | struct { | |
| 173 | u8 left, right; | |
| 174 | } stereo; | |
| 175 | u8 mono; | |
| 176 | } value; | |
| 177 | }; | |
| 178 | ||
| 179 | /* Initialize the ac97 mixer by resetting it. */ | |
| 180 | extern int ac97_init (struct ac97_hwint *dev); | |
| 181 | ||
| 182 | /* Sets the mixer DEV to the values in VALUE_LIST. Returns 0 on success, | |
| 183 | or a negative error code. */ | |
| 184 | extern int ac97_set_values (struct ac97_hwint *dev, | |
| 185 | struct ac97_mixer_value_list *value_list); | |
| 186 | ||
| 187 | /* Writes the specified VALUE to the AC97 register REG in the mixer. | |
| 188 | Takes care of setting the last-written cache as well. */ | |
| 189 | extern int ac97_put_register (struct ac97_hwint *dev, u8 reg, u16 value); | |
| 190 | ||
| 191 | /* Default ioctl. */ | |
| 192 | extern int ac97_mixer_ioctl (struct ac97_hwint *dev, unsigned int cmd, | |
| 193 | void __user * arg); | |
| 194 | ||
| 195 | /* Do a complete reset on the AC97 mixer, restoring all mixer registers to | |
| 196 | the current values. Normally used after an APM resume event. */ | |
| 197 | extern int ac97_reset (struct ac97_hwint *dev); | |
| 198 | #endif | |
| 199 | \f | |
| 200 | /* | |
| 201 | * Local variables: | |
| 202 | * c-basic-offset: 4 | |
| 203 | * End: | |
| 204 | */ |