git.oblomov.eu Git - linux-2.6/blob - sound/pci/ac97/ac97_proc.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
   3  *  Universal interface for Audio Codec '97
   4  *
   5  *  For more details look to AC '97 component specification revision 2.2
   6  *  by Intel Corporation (http://developer.intel.com).
   7  *
   8  *
   9  *   This program is free software; you can redistribute it and/or modify
  10  *   it under the terms of the GNU General Public License as published by
  11  *   the Free Software Foundation; either version 2 of the License, or
  12  *   (at your option) any later version.
  13  *
  14  *   This program is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with this program; if not, write to the Free Software
  21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22  *
  23  */
  24
  25 #include <linux/slab.h>
  26 #include <linux/mutex.h>
  27
  28 #include <sound/core.h>
  29 #include <sound/ac97_codec.h>
  30 #include <sound/asoundef.h>
  31 #include "ac97_local.h"
  32 #include "ac97_id.h"
  33
  34 /*
  35  * proc interface
  36  */
  37
  38 static void snd_ac97_proc_read_functions(struct snd_ac97 *ac97, struct snd_info_buffer *buffer)
  39 {
  40         int header = 0, function;
  41         unsigned short info, sense_info;
  42         static const char *function_names[12] = {
  43                 "Master Out", "AUX Out", "Center/LFE Out", "SPDIF Out",
  44                 "Phone In", "Mic 1", "Mic 2", "Line In", "CD In", "Video In",
  45                 "Aux In", "Mono Out"
  46         };
  47         static const char *locations[8] = {
  48                 "Rear I/O Panel", "Front Panel", "Motherboard", "Dock/External",
  49                 "reserved", "reserved", "reserved", "NC/unused"
  50         };
  51
  52         for (function = 0; function < 12; ++function) {
  53                 snd_ac97_write(ac97, AC97_FUNC_SELECT, function << 1);
  54                 info = snd_ac97_read(ac97, AC97_FUNC_INFO);
  55                 if (!(info & 0x0001))
  56                         continue;
  57                 if (!header) {
  58                         snd_iprintf(buffer, "\n                    Gain     Inverted  Buffer delay  Location\n");
  59                         header = 1;
  60                 }
  61                 sense_info = snd_ac97_read(ac97, AC97_SENSE_INFO);
  62                 snd_iprintf(buffer, "%-17s: %3d.%d dBV    %c      %2d/fs         %s\n",
  63                             function_names[function],
  64                             (info & 0x8000 ? -1 : 1) * ((info & 0x7000) >> 12) * 3 / 2,
  65                             ((info & 0x0800) >> 11) * 5,
  66                             info & 0x0400 ? 'X' : '-',
  67                             (info & 0x03e0) >> 5,
  68                             locations[sense_info >> 13]);
  69         }
  70 }
  71
  72 static const char *snd_ac97_stereo_enhancements[] =
  73 {
  74   /*   0 */ "No 3D Stereo Enhancement",
  75   /*   1 */ "Analog Devices Phat Stereo",
  76   /*   2 */ "Creative Stereo Enhancement",
  77   /*   3 */ "National Semi 3D Stereo Enhancement",
  78   /*   4 */ "YAMAHA Ymersion",
  79   /*   5 */ "BBE 3D Stereo Enhancement",
  80   /*   6 */ "Crystal Semi 3D Stereo Enhancement",
  81   /*   7 */ "Qsound QXpander",
  82   /*   8 */ "Spatializer 3D Stereo Enhancement",
  83   /*   9 */ "SRS 3D Stereo Enhancement",
  84   /*  10 */ "Platform Tech 3D Stereo Enhancement",
  85   /*  11 */ "AKM 3D Audio",
  86   /*  12 */ "Aureal Stereo Enhancement",
  87   /*  13 */ "Aztech 3D Enhancement",
  88   /*  14 */ "Binaura 3D Audio Enhancement",
  89   /*  15 */ "ESS Technology Stereo Enhancement",
  90   /*  16 */ "Harman International VMAx",
  91   /*  17 */ "Nvidea/IC Ensemble/KS Waves 3D Stereo Enhancement",
  92   /*  18 */ "Philips Incredible Sound",
  93   /*  19 */ "Texas Instruments 3D Stereo Enhancement",
  94   /*  20 */ "VLSI Technology 3D Stereo Enhancement",
  95   /*  21 */ "TriTech 3D Stereo Enhancement",
  96   /*  22 */ "Realtek 3D Stereo Enhancement",
  97   /*  23 */ "Samsung 3D Stereo Enhancement",
  98   /*  24 */ "Wolfson Microelectronics 3D Enhancement",
  99   /*  25 */ "Delta Integration 3D Enhancement",
 100   /*  26 */ "SigmaTel 3D Enhancement",
 101   /*  27 */ "IC Ensemble/KS Waves",
 102   /*  28 */ "Rockwell 3D Stereo Enhancement",
 103   /*  29 */ "Reserved 29",
 104   /*  30 */ "Reserved 30",
 105   /*  31 */ "Reserved 31"
 106 };
 107
 108 static void snd_ac97_proc_read_main(struct snd_ac97 *ac97, struct snd_info_buffer *buffer, int subidx)
 109 {
 110         char name[64];
 111         unsigned short val, tmp, ext, mext;
 112         static const char *spdif_slots[4] = { " SPDIF=3/4", " SPDIF=7/8", " SPDIF=6/9", " SPDIF=10/11" };
 113         static const char *spdif_rates[4] = { " Rate=44.1kHz", " Rate=res", " Rate=48kHz", " Rate=32kHz" };
 114         static const char *spdif_rates_cs4205[4] = { " Rate=48kHz", " Rate=44.1kHz", " Rate=res", " Rate=res" };
 115         static const char *double_rate_slots[4] = { "10/11", "7/8", "reserved", "reserved" };
 116
 117         snd_ac97_get_name(NULL, ac97->id, name, 0);
 118         snd_iprintf(buffer, "%d-%d/%d: %s\n\n", ac97->addr, ac97->num, subidx, name);
 119
 120         if ((ac97->scaps & AC97_SCAP_AUDIO) == 0)
 121                 goto __modem;
 122
 123         snd_iprintf(buffer, "PCI Subsys Vendor: 0x%04x\n",
 124                     ac97->subsystem_vendor);
 125         snd_iprintf(buffer, "PCI Subsys Device: 0x%04x\n\n",
 126                     ac97->subsystem_device);
 127
 128         snd_iprintf(buffer, "Flags: %x\n", ac97->flags);
 129
 130         if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {
 131                 val = snd_ac97_read(ac97, AC97_INT_PAGING);
 132                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
 133                                      AC97_PAGE_MASK, AC97_PAGE_1);
 134                 tmp = snd_ac97_read(ac97, AC97_CODEC_CLASS_REV);
 135                 snd_iprintf(buffer, "Revision         : 0x%02x\n", tmp & 0xff);
 136                 snd_iprintf(buffer, "Compat. Class    : 0x%02x\n", (tmp >> 8) & 0x1f);
 137                 snd_iprintf(buffer, "Subsys. Vendor ID: 0x%04x\n",
 138                             snd_ac97_read(ac97, AC97_PCI_SVID));
 139                 snd_iprintf(buffer, "Subsys. ID       : 0x%04x\n\n",
 140                             snd_ac97_read(ac97, AC97_PCI_SID));
 141                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
 142                                      AC97_PAGE_MASK, val & AC97_PAGE_MASK);
 143         }
 144
 145         // val = snd_ac97_read(ac97, AC97_RESET);
 146         val = ac97->caps;
 147         snd_iprintf(buffer, "Capabilities     :%s%s%s%s%s%s\n",
 148                     val & AC97_BC_DEDICATED_MIC ? " -dedicated MIC PCM IN channel-" : "",
 149                     val & AC97_BC_RESERVED1 ? " -reserved1-" : "",
 150                     val & AC97_BC_BASS_TREBLE ? " -bass & treble-" : "",
 151                     val & AC97_BC_SIM_STEREO ? " -simulated stereo-" : "",
 152                     val & AC97_BC_HEADPHONE ? " -headphone out-" : "",
 153                     val & AC97_BC_LOUDNESS ? " -loudness-" : "");
 154         tmp = ac97->caps & AC97_BC_DAC_MASK;
 155         snd_iprintf(buffer, "DAC resolution   : %s%s%s%s\n",
 156                     tmp == AC97_BC_16BIT_DAC ? "16-bit" : "",
 157                     tmp == AC97_BC_18BIT_DAC ? "18-bit" : "",
 158                     tmp == AC97_BC_20BIT_DAC ? "20-bit" : "",
 159                     tmp == AC97_BC_DAC_MASK ? "???" : "");
 160         tmp = ac97->caps & AC97_BC_ADC_MASK;
 161         snd_iprintf(buffer, "ADC resolution   : %s%s%s%s\n",
 162                     tmp == AC97_BC_16BIT_ADC ? "16-bit" : "",
 163                     tmp == AC97_BC_18BIT_ADC ? "18-bit" : "",
 164                     tmp == AC97_BC_20BIT_ADC ? "20-bit" : "",
 165                     tmp == AC97_BC_ADC_MASK ? "???" : "");
 166         snd_iprintf(buffer, "3D enhancement   : %s\n",
 167                 snd_ac97_stereo_enhancements[(val >> 10) & 0x1f]);
 168         snd_iprintf(buffer, "\nCurrent setup\n");
 169         val = snd_ac97_read(ac97, AC97_MIC);
 170         snd_iprintf(buffer, "Mic gain         : %s [%s]\n", val & 0x0040 ? "+20dB" : "+0dB", ac97->regs[AC97_MIC] & 0x0040 ? "+20dB" : "+0dB");
 171         val = snd_ac97_read(ac97, AC97_GENERAL_PURPOSE);
 172         snd_iprintf(buffer, "POP path         : %s 3D\n"
 173                     "Sim. stereo      : %s\n"
 174                     "3D enhancement   : %s\n"
 175                     "Loudness         : %s\n"
 176                     "Mono output      : %s\n"
 177                     "Mic select       : %s\n"
 178                     "ADC/DAC loopback : %s\n",
 179                     val & 0x8000 ? "post" : "pre",
 180                     val & 0x4000 ? "on" : "off",
 181                     val & 0x2000 ? "on" : "off",
 182                     val & 0x1000 ? "on" : "off",
 183                     val & 0x0200 ? "Mic" : "MIX",
 184                     val & 0x0100 ? "Mic2" : "Mic1",
 185                     val & 0x0080 ? "on" : "off");
 186         if (ac97->ext_id & AC97_EI_DRA)
 187                 snd_iprintf(buffer, "Double rate slots: %s\n",
 188                             double_rate_slots[(val >> 10) & 3]);
 189
 190         ext = snd_ac97_read(ac97, AC97_EXTENDED_ID);
 191         if (ext == 0)
 192                 goto __modem;
 193
 194         snd_iprintf(buffer, "Extended ID      : codec=%i rev=%i%s%s%s%s DSA=%i%s%s%s%s\n",
 195                         (ext & AC97_EI_ADDR_MASK) >> AC97_EI_ADDR_SHIFT,
 196                         (ext & AC97_EI_REV_MASK) >> AC97_EI_REV_SHIFT,
 197                         ext & AC97_EI_AMAP ? " AMAP" : "",
 198                         ext & AC97_EI_LDAC ? " LDAC" : "",
 199                         ext & AC97_EI_SDAC ? " SDAC" : "",
 200                         ext & AC97_EI_CDAC ? " CDAC" : "",
 201                         (ext & AC97_EI_DACS_SLOT_MASK) >> AC97_EI_DACS_SLOT_SHIFT,
 202                         ext & AC97_EI_VRM ? " VRM" : "",
 203                         ext & AC97_EI_SPDIF ? " SPDIF" : "",
 204                         ext & AC97_EI_DRA ? " DRA" : "",
 205                         ext & AC97_EI_VRA ? " VRA" : "");
 206         val = snd_ac97_read(ac97, AC97_EXTENDED_STATUS);
 207         snd_iprintf(buffer, "Extended status  :%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
 208                         val & AC97_EA_PRL ? " PRL" : "",
 209                         val & AC97_EA_PRK ? " PRK" : "",
 210                         val & AC97_EA_PRJ ? " PRJ" : "",
 211                         val & AC97_EA_PRI ? " PRI" : "",
 212                         val & AC97_EA_SPCV ? " SPCV" : "",
 213                         val & AC97_EA_MDAC ? " MADC" : "",
 214                         val & AC97_EA_LDAC ? " LDAC" : "",
 215                         val & AC97_EA_SDAC ? " SDAC" : "",
 216                         val & AC97_EA_CDAC ? " CDAC" : "",
 217                         ext & AC97_EI_SPDIF ? spdif_slots[(val & AC97_EA_SPSA_SLOT_MASK) >> AC97_EA_SPSA_SLOT_SHIFT] : "",
 218                         val & AC97_EA_VRM ? " VRM" : "",
 219                         val & AC97_EA_SPDIF ? " SPDIF" : "",
 220                         val & AC97_EA_DRA ? " DRA" : "",
 221                         val & AC97_EA_VRA ? " VRA" : "");
 222         if (ext & AC97_EI_VRA) {        /* VRA */
 223                 val = snd_ac97_read(ac97, AC97_PCM_FRONT_DAC_RATE);
 224                 snd_iprintf(buffer, "PCM front DAC    : %iHz\n", val);
 225                 if (ext & AC97_EI_SDAC) {
 226                         val = snd_ac97_read(ac97, AC97_PCM_SURR_DAC_RATE);
 227                         snd_iprintf(buffer, "PCM Surr DAC     : %iHz\n", val);
 228                 }
 229                 if (ext & AC97_EI_LDAC) {
 230                         val = snd_ac97_read(ac97, AC97_PCM_LFE_DAC_RATE);
 231                         snd_iprintf(buffer, "PCM LFE DAC      : %iHz\n", val);
 232                 }
 233                 val = snd_ac97_read(ac97, AC97_PCM_LR_ADC_RATE);
 234                 snd_iprintf(buffer, "PCM ADC          : %iHz\n", val);
 235         }
 236         if (ext & AC97_EI_VRM) {
 237                 val = snd_ac97_read(ac97, AC97_PCM_MIC_ADC_RATE);
 238                 snd_iprintf(buffer, "PCM MIC ADC      : %iHz\n", val);
 239         }
 240         if ((ext & AC97_EI_SPDIF) || (ac97->flags & AC97_CS_SPDIF) ||
 241             (ac97->id == AC97_ID_YMF743)) {
 242                 if (ac97->flags & AC97_CS_SPDIF)
 243                         val = snd_ac97_read(ac97, AC97_CSR_SPDIF);
 244                 else if (ac97->id == AC97_ID_YMF743) {
 245                         val = snd_ac97_read(ac97, AC97_YMF7X3_DIT_CTRL);
 246                         val = 0x2000 | (val & 0xff00) >> 4 | (val & 0x38) >> 2;
 247                 } else
 248                         val = snd_ac97_read(ac97, AC97_SPDIF);
 249
 250                 snd_iprintf(buffer, "SPDIF Control    :%s%s%s%s Category=0x%x Generation=%i%s%s%s\n",
 251                         val & AC97_SC_PRO ? " PRO" : " Consumer",
 252                         val & AC97_SC_NAUDIO ? " Non-audio" : " PCM",
 253                         val & AC97_SC_COPY ? "" : " Copyright",
 254                         val & AC97_SC_PRE ? " Preemph50/15" : "",
 255                         (val & AC97_SC_CC_MASK) >> AC97_SC_CC_SHIFT,
 256                         (val & AC97_SC_L) >> 11,
 257                         (ac97->flags & AC97_CS_SPDIF) ?
 258                             spdif_rates_cs4205[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT] :
 259                             spdif_rates[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT],
 260                         (ac97->flags & AC97_CS_SPDIF) ?
 261                             (val & AC97_SC_DRS ? " Validity" : "") :
 262                             (val & AC97_SC_DRS ? " DRS" : ""),
 263                         (ac97->flags & AC97_CS_SPDIF) ?
 264                             (val & AC97_SC_V ? " Enabled" : "") :
 265                             (val & AC97_SC_V ? " Validity" : ""));
 266                 /* ALC650 specific*/
 267                 if ((ac97->id & 0xfffffff0) == 0x414c4720 &&
 268                     (snd_ac97_read(ac97, AC97_ALC650_CLOCK) & 0x01)) {
 269                         val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);
 270                         if (val & AC97_ALC650_CLOCK_LOCK) {
 271                                 val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS1);
 272                                 snd_iprintf(buffer, "SPDIF In Status  :%s%s%s%s Category=0x%x Generation=%i",
 273                                             val & AC97_ALC650_PRO ? " PRO" : " Consumer",
 274                                             val & AC97_ALC650_NAUDIO ? " Non-audio" : " PCM",
 275                                             val & AC97_ALC650_COPY ? "" : " Copyright",
 276                                             val & AC97_ALC650_PRE ? " Preemph50/15" : "",
 277                                             (val & AC97_ALC650_CC_MASK) >> AC97_ALC650_CC_SHIFT,
 278                                             (val & AC97_ALC650_L) >> 15);
 279                                 val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);
 280                                 snd_iprintf(buffer, "%s Accuracy=%i%s%s\n",
 281                                             spdif_rates[(val & AC97_ALC650_SPSR_MASK) >> AC97_ALC650_SPSR_SHIFT],
 282                                             (val & AC97_ALC650_CLOCK_ACCURACY) >> AC97_ALC650_CLOCK_SHIFT,
 283                                             (val & AC97_ALC650_CLOCK_LOCK ? " Locked" : " Unlocked"),
 284                                             (val & AC97_ALC650_V ? " Validity?" : ""));
 285                         } else {
 286                                 snd_iprintf(buffer, "SPDIF In Status  : Not Locked\n");
 287                         }
 288                 }
 289         }
 290         if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {
 291                 val = snd_ac97_read(ac97, AC97_INT_PAGING);
 292                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
 293                                      AC97_PAGE_MASK, AC97_PAGE_1);
 294                 snd_ac97_proc_read_functions(ac97, buffer);
 295                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
 296                                      AC97_PAGE_MASK, val & AC97_PAGE_MASK);
 297         }
 298
 299
 300       __modem:
 301         mext = snd_ac97_read(ac97, AC97_EXTENDED_MID);
 302         if (mext == 0)
 303                 return;
 304
 305         snd_iprintf(buffer, "Extended modem ID: codec=%i%s%s%s%s%s\n",
 306                         (mext & AC97_MEI_ADDR_MASK) >> AC97_MEI_ADDR_SHIFT,
 307                         mext & AC97_MEI_CID2 ? " CID2" : "",
 308                         mext & AC97_MEI_CID1 ? " CID1" : "",
 309                         mext & AC97_MEI_HANDSET ? " HSET" : "",
 310                         mext & AC97_MEI_LINE2 ? " LIN2" : "",
 311                         mext & AC97_MEI_LINE1 ? " LIN1" : "");
 312         val = snd_ac97_read(ac97, AC97_EXTENDED_MSTATUS);
 313         snd_iprintf(buffer, "Modem status     :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
 314                         val & AC97_MEA_GPIO ? " GPIO" : "",
 315                         val & AC97_MEA_MREF ? " MREF" : "",
 316                         val & AC97_MEA_ADC1 ? " ADC1" : "",
 317                         val & AC97_MEA_DAC1 ? " DAC1" : "",
 318                         val & AC97_MEA_ADC2 ? " ADC2" : "",
 319                         val & AC97_MEA_DAC2 ? " DAC2" : "",
 320                         val & AC97_MEA_HADC ? " HADC" : "",
 321                         val & AC97_MEA_HDAC ? " HDAC" : "",
 322                         val & AC97_MEA_PRA ? " PRA(GPIO)" : "",
 323                         val & AC97_MEA_PRB ? " PRB(res)" : "",
 324                         val & AC97_MEA_PRC ? " PRC(ADC1)" : "",
 325                         val & AC97_MEA_PRD ? " PRD(DAC1)" : "",
 326                         val & AC97_MEA_PRE ? " PRE(ADC2)" : "",
 327                         val & AC97_MEA_PRF ? " PRF(DAC2)" : "",
 328                         val & AC97_MEA_PRG ? " PRG(HADC)" : "",
 329                         val & AC97_MEA_PRH ? " PRH(HDAC)" : "");
 330         if (mext & AC97_MEI_LINE1) {
 331                 val = snd_ac97_read(ac97, AC97_LINE1_RATE);
 332                 snd_iprintf(buffer, "Line1 rate       : %iHz\n", val);
 333         }
 334         if (mext & AC97_MEI_LINE2) {
 335                 val = snd_ac97_read(ac97, AC97_LINE2_RATE);
 336                 snd_iprintf(buffer, "Line2 rate       : %iHz\n", val);
 337         }
 338         if (mext & AC97_MEI_HANDSET) {
 339                 val = snd_ac97_read(ac97, AC97_HANDSET_RATE);
 340                 snd_iprintf(buffer, "Headset rate     : %iHz\n", val);
 341         }
 342 }
 343
 344 static void snd_ac97_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 345 {
 346         struct snd_ac97 *ac97 = entry->private_data;
 347
 348         mutex_lock(&ac97->page_mutex);
 349         if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) {        // Analog Devices AD1881/85/86
 350                 int idx;
 351                 for (idx = 0; idx < 3; idx++)
 352                         if (ac97->spec.ad18xx.id[idx]) {
 353                                 /* select single codec */
 354                                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
 355                                                      ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);
 356                                 snd_ac97_proc_read_main(ac97, buffer, idx);
 357                                 snd_iprintf(buffer, "\n\n");
 358                         }
 359                 /* select all codecs */
 360                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
 361
 362                 snd_iprintf(buffer, "\nAD18XX configuration\n");
 363                 snd_iprintf(buffer, "Unchained        : 0x%04x,0x%04x,0x%04x\n",
 364                         ac97->spec.ad18xx.unchained[0],
 365                         ac97->spec.ad18xx.unchained[1],
 366                         ac97->spec.ad18xx.unchained[2]);
 367                 snd_iprintf(buffer, "Chained          : 0x%04x,0x%04x,0x%04x\n",
 368                         ac97->spec.ad18xx.chained[0],
 369                         ac97->spec.ad18xx.chained[1],
 370                         ac97->spec.ad18xx.chained[2]);
 371         } else {
 372                 snd_ac97_proc_read_main(ac97, buffer, 0);
 373         }
 374         mutex_unlock(&ac97->page_mutex);
 375 }
 376
 377 #ifdef CONFIG_SND_DEBUG
 378 /* direct register write for debugging */
 379 static void snd_ac97_proc_regs_write(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
 380 {
 381         struct snd_ac97 *ac97 = entry->private_data;
 382         char line[64];
 383         unsigned int reg, val;
 384         mutex_lock(&ac97->page_mutex);
 385         while (!snd_info_get_line(buffer, line, sizeof(line))) {
 386                 if (sscanf(line, "%x %x", &reg, &val) != 2)
 387                         continue;
 388                 /* register must be even */
 389                 if (reg < 0x80 && (reg & 1) == 0 && val <= 0xffff)
 390                         snd_ac97_write_cache(ac97, reg, val);
 391         }
 392         mutex_unlock(&ac97->page_mutex);
 393 }
 394 #endif
 395
 396 static void snd_ac97_proc_regs_read_main(struct snd_ac97 *ac97, struct snd_info_buffer *buffer, int subidx)
 397 {
 398         int reg, val;
 399
 400         for (reg = 0; reg < 0x80; reg += 2) {
 401                 val = snd_ac97_read(ac97, reg);
 402                 snd_iprintf(buffer, "%i:%02x = %04x\n", subidx, reg, val);
 403         }
 404 }
 405
 406 static void snd_ac97_proc_regs_read(struct snd_info_entry *entry,
 407                                     struct snd_info_buffer *buffer)
 408 {
 409         struct snd_ac97 *ac97 = entry->private_data;
 410
 411         mutex_lock(&ac97->page_mutex);
 412         if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) {        // Analog Devices AD1881/85/86
 413
 414                 int idx;
 415                 for (idx = 0; idx < 3; idx++)
 416                         if (ac97->spec.ad18xx.id[idx]) {
 417                                 /* select single codec */
 418                                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
 419                                                      ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);
 420                                 snd_ac97_proc_regs_read_main(ac97, buffer, idx);
 421                         }
 422                 /* select all codecs */
 423                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
 424         } else {
 425                 snd_ac97_proc_regs_read_main(ac97, buffer, 0);
 426         }
 427         mutex_unlock(&ac97->page_mutex);
 428 }
 429
 430 void snd_ac97_proc_init(struct snd_ac97 * ac97)
 431 {
 432         struct snd_info_entry *entry;
 433         char name[32];
 434         const char *prefix;
 435
 436         if (ac97->bus->proc == NULL)
 437                 return;
 438         prefix = ac97_is_audio(ac97) ? "ac97" : "mc97";
 439         sprintf(name, "%s#%d-%d", prefix, ac97->addr, ac97->num);
 440         if ((entry = snd_info_create_card_entry(ac97->bus->card, name, ac97->bus->proc)) != NULL) {
 441                 snd_info_set_text_ops(entry, ac97, snd_ac97_proc_read);
 442                 if (snd_info_register(entry) < 0) {
 443                         snd_info_free_entry(entry);
 444                         entry = NULL;
 445                 }
 446         }
 447         ac97->proc = entry;
 448         sprintf(name, "%s#%d-%d+regs", prefix, ac97->addr, ac97->num);
 449         if ((entry = snd_info_create_card_entry(ac97->bus->card, name, ac97->bus->proc)) != NULL) {
 450                 snd_info_set_text_ops(entry, ac97, snd_ac97_proc_regs_read);
 451 #ifdef CONFIG_SND_DEBUG
 452                 entry->mode |= S_IWUSR;
 453                 entry->c.text.write = snd_ac97_proc_regs_write;
 454 #endif
 455                 if (snd_info_register(entry) < 0) {
 456                         snd_info_free_entry(entry);
 457                         entry = NULL;
 458                 }
 459         }
 460         ac97->proc_regs = entry;
 461 }
 462
 463 void snd_ac97_proc_done(struct snd_ac97 * ac97)
 464 {
 465         snd_info_free_entry(ac97->proc_regs);
 466         ac97->proc_regs = NULL;
 467         snd_info_free_entry(ac97->proc);
 468         ac97->proc = NULL;
 469 }
 470
 471 void snd_ac97_bus_proc_init(struct snd_ac97_bus * bus)
 472 {
 473         struct snd_info_entry *entry;
 474         char name[32];
 475
 476         sprintf(name, "codec97#%d", bus->num);
 477         if ((entry = snd_info_create_card_entry(bus->card, name, bus->card->proc_root)) != NULL) {
 478                 entry->mode = S_IFDIR | S_IRUGO | S_IXUGO;
 479                 if (snd_info_register(entry) < 0) {
 480                         snd_info_free_entry(entry);
 481                         entry = NULL;
 482                 }
 483         }
 484         bus->proc = entry;
 485 }
 486
 487 void snd_ac97_bus_proc_done(struct snd_ac97_bus * bus)
 488 {
 489         snd_info_free_entry(bus->proc);
 490         bus->proc = NULL;
 491 }