sound/pci/ac97/ac97_proc.c

   1 /*
   2  *  Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h>
  26 #include <linux/slab.h>
  27 #include <sound/core.h>
  28 #include <sound/ac97_codec.h>
  29 #include <sound/asoundef.h>
  30 #include "ac97_local.h"
  31 #include "ac97_id.h"
  32
  33 /*
  34  * proc interface
  35  */
  36
  37 static void snd_ac97_proc_read_functions(ac97_t *ac97, snd_info_buffer_t *buffer)
  38 {
  39         int header = 0, function;
  40         unsigned short info, sense_info;
  41         static const char *function_names[12] = {
  42                 "Master Out", "AUX Out", "Center/LFE Out", "SPDIF Out",
  43                 "Phone In", "Mic 1", "Mic 2", "Line In", "CD In", "Video In",
  44                 "Aux In", "Mono Out"
  45         };
  46         static const char *locations[8] = {
  47                 "Rear I/O Panel", "Front Panel", "Motherboard", "Dock/External",
  48                 "reserved", "reserved", "reserved", "NC/unused"
  49         };
  50
  51         for (function = 0; function < 12; ++function) {
  52                 snd_ac97_write(ac97, AC97_FUNC_SELECT, function << 1);
  53                 info = snd_ac97_read(ac97, AC97_FUNC_INFO);
  54                 if (!(info & 0x0001))
  55                         continue;
  56                 if (!header) {
  57                         snd_iprintf(buffer, "\n                    Gain     Inverted  Buffer delay  Location\n");
  58                         header = 1;
  59                 }
  60                 sense_info = snd_ac97_read(ac97, AC97_SENSE_INFO);
  61                 snd_iprintf(buffer, "%-17s: %3d.%d dBV    %c      %2d/fs         %s\n",
  62                             function_names[function],
  63                             (info & 0x8000 ? -1 : 1) * ((info & 0x7000) >> 12) * 3 / 2,
  64                             ((info & 0x0800) >> 11) * 5,
  65                             info & 0x0400 ? 'X' : '-',
  66                             (info & 0x03e0) >> 5,
  67                             locations[sense_info >> 13]);
  68         }
  69 }
  70
  71 static void snd_ac97_proc_read_main(ac97_t *ac97, snd_info_buffer_t * buffer, int subidx)
  72 {
  73         char name[64];
  74         unsigned short val, tmp, ext, mext;
  75         static const char *spdif_slots[4] = { " SPDIF=3/4", " SPDIF=7/8", " SPDIF=6/9", " SPDIF=10/11" };
  76         static const char *spdif_rates[4] = { " Rate=44.1kHz", " Rate=res", " Rate=48kHz", " Rate=32kHz" };
  77         static const char *spdif_rates_cs4205[4] = { " Rate=48kHz", " Rate=44.1kHz", " Rate=res", " Rate=res" };
  78         static const char *double_rate_slots[4] = { "10/11", "7/8", "reserved", "reserved" };
  79
  80         snd_ac97_get_name(NULL, ac97->id, name, 0);
  81         snd_iprintf(buffer, "%d-%d/%d: %s\n\n", ac97->addr, ac97->num, subidx, name);
  82         if ((ac97->scaps & AC97_SCAP_AUDIO) == 0)
  83                 goto __modem;
  84
  85         if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {
  86                 val = snd_ac97_read(ac97, AC97_INT_PAGING);
  87                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
  88                                      AC97_PAGE_MASK, AC97_PAGE_1);
  89                 tmp = snd_ac97_read(ac97, AC97_CODEC_CLASS_REV);
  90                 snd_iprintf(buffer, "Revision         : 0x%02x\n", tmp & 0xff);
  91                 snd_iprintf(buffer, "Compat. Class    : 0x%02x\n", (tmp >> 8) & 0x1f);
  92                 snd_iprintf(buffer, "Subsys. Vendor ID: 0x%04x\n",
  93                             snd_ac97_read(ac97, AC97_PCI_SVID));
  94                 snd_iprintf(buffer, "Subsys. ID       : 0x%04x\n\n",
  95                             snd_ac97_read(ac97, AC97_PCI_SID));
  96                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
  97                                      AC97_PAGE_MASK, val & AC97_PAGE_MASK);
  98         }
  99
 100         // val = snd_ac97_read(ac97, AC97_RESET);
 101         val = ac97->caps;
 102         snd_iprintf(buffer, "Capabilities     :%s%s%s%s%s%s\n",
 103                     val & AC97_BC_DEDICATED_MIC ? " -dedicated MIC PCM IN channel-" : "",
 104                     val & AC97_BC_RESERVED1 ? " -reserved1-" : "",
 105                     val & AC97_BC_BASS_TREBLE ? " -bass & treble-" : "",
 106                     val & AC97_BC_SIM_STEREO ? " -simulated stereo-" : "",
 107                     val & AC97_BC_HEADPHONE ? " -headphone out-" : "",
 108                     val & AC97_BC_LOUDNESS ? " -loudness-" : "");
 109         tmp = ac97->caps & AC97_BC_DAC_MASK;
 110         snd_iprintf(buffer, "DAC resolution   : %s%s%s%s\n",
 111                     tmp == AC97_BC_16BIT_DAC ? "16-bit" : "",
 112                     tmp == AC97_BC_18BIT_DAC ? "18-bit" : "",
 113                     tmp == AC97_BC_20BIT_DAC ? "20-bit" : "",
 114                     tmp == AC97_BC_DAC_MASK ? "???" : "");
 115         tmp = ac97->caps & AC97_BC_ADC_MASK;
 116         snd_iprintf(buffer, "ADC resolution   : %s%s%s%s\n",
 117                     tmp == AC97_BC_16BIT_ADC ? "16-bit" : "",
 118                     tmp == AC97_BC_18BIT_ADC ? "18-bit" : "",
 119                     tmp == AC97_BC_20BIT_ADC ? "20-bit" : "",
 120                     tmp == AC97_BC_ADC_MASK ? "???" : "");
 121         snd_iprintf(buffer, "3D enhancement   : %s\n",
 122                 snd_ac97_stereo_enhancements[(val >> 10) & 0x1f]);
 123         snd_iprintf(buffer, "\nCurrent setup\n");
 124         val = snd_ac97_read(ac97, AC97_MIC);
 125         snd_iprintf(buffer, "Mic gain         : %s [%s]\n", val & 0x0040 ? "+20dB" : "+0dB", ac97->regs[AC97_MIC] & 0x0040 ? "+20dB" : "+0dB");
 126         val = snd_ac97_read(ac97, AC97_GENERAL_PURPOSE);
 127         snd_iprintf(buffer, "POP path         : %s 3D\n"
 128                     "Sim. stereo      : %s\n"
 129                     "3D enhancement   : %s\n"
 130                     "Loudness         : %s\n"
 131                     "Mono output      : %s\n"
 132                     "Mic select       : %s\n"
 133                     "ADC/DAC loopback : %s\n",
 134                     val & 0x8000 ? "post" : "pre",
 135                     val & 0x4000 ? "on" : "off",
 136                     val & 0x2000 ? "on" : "off",
 137                     val & 0x1000 ? "on" : "off",
 138                     val & 0x0200 ? "Mic" : "MIX",
 139                     val & 0x0100 ? "Mic2" : "Mic1",
 140                     val & 0x0080 ? "on" : "off");
 141         if (ac97->ext_id & AC97_EI_DRA)
 142                 snd_iprintf(buffer, "Double rate slots: %s\n",
 143                             double_rate_slots[(val >> 10) & 3]);
 144
 145         ext = snd_ac97_read(ac97, AC97_EXTENDED_ID);
 146         if (ext == 0)
 147                 goto __modem;
 148
 149         snd_iprintf(buffer, "Extended ID      : codec=%i rev=%i%s%s%s%s DSA=%i%s%s%s%s\n",
 150                         (ext & AC97_EI_ADDR_MASK) >> AC97_EI_ADDR_SHIFT,
 151                         (ext & AC97_EI_REV_MASK) >> AC97_EI_REV_SHIFT,
 152                         ext & AC97_EI_AMAP ? " AMAP" : "",
 153                         ext & AC97_EI_LDAC ? " LDAC" : "",
 154                         ext & AC97_EI_SDAC ? " SDAC" : "",
 155                         ext & AC97_EI_CDAC ? " CDAC" : "",
 156                         (ext & AC97_EI_DACS_SLOT_MASK) >> AC97_EI_DACS_SLOT_SHIFT,
 157                         ext & AC97_EI_VRM ? " VRM" : "",
 158                         ext & AC97_EI_SPDIF ? " SPDIF" : "",
 159                         ext & AC97_EI_DRA ? " DRA" : "",
 160                         ext & AC97_EI_VRA ? " VRA" : "");
 161         val = snd_ac97_read(ac97, AC97_EXTENDED_STATUS);
 162         snd_iprintf(buffer, "Extended status  :%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
 163                         val & AC97_EA_PRL ? " PRL" : "",
 164                         val & AC97_EA_PRK ? " PRK" : "",
 165                         val & AC97_EA_PRJ ? " PRJ" : "",
 166                         val & AC97_EA_PRI ? " PRI" : "",
 167                         val & AC97_EA_SPCV ? " SPCV" : "",
 168                         val & AC97_EA_MDAC ? " MADC" : "",
 169                         val & AC97_EA_LDAC ? " LDAC" : "",
 170                         val & AC97_EA_SDAC ? " SDAC" : "",
 171                         val & AC97_EA_CDAC ? " CDAC" : "",
 172                         ext & AC97_EI_SPDIF ? spdif_slots[(val & AC97_EA_SPSA_SLOT_MASK) >> AC97_EA_SPSA_SLOT_SHIFT] : "",
 173                         val & AC97_EA_VRM ? " VRM" : "",
 174                         val & AC97_EA_SPDIF ? " SPDIF" : "",
 175                         val & AC97_EA_DRA ? " DRA" : "",
 176                         val & AC97_EA_VRA ? " VRA" : "");
 177         if (ext & AC97_EI_VRA) {        /* VRA */
 178                 val = snd_ac97_read(ac97, AC97_PCM_FRONT_DAC_RATE);
 179                 snd_iprintf(buffer, "PCM front DAC    : %iHz\n", val);
 180                 if (ext & AC97_EI_SDAC) {
 181                         val = snd_ac97_read(ac97, AC97_PCM_SURR_DAC_RATE);
 182                         snd_iprintf(buffer, "PCM Surr DAC     : %iHz\n", val);
 183                 }
 184                 if (ext & AC97_EI_LDAC) {
 185                         val = snd_ac97_read(ac97, AC97_PCM_LFE_DAC_RATE);
 186                         snd_iprintf(buffer, "PCM LFE DAC      : %iHz\n", val);
 187                 }
 188                 val = snd_ac97_read(ac97, AC97_PCM_LR_ADC_RATE);
 189                 snd_iprintf(buffer, "PCM ADC          : %iHz\n", val);
 190         }
 191         if (ext & AC97_EI_VRM) {
 192                 val = snd_ac97_read(ac97, AC97_PCM_MIC_ADC_RATE);
 193                 snd_iprintf(buffer, "PCM MIC ADC      : %iHz\n", val);
 194         }
 195         if ((ext & AC97_EI_SPDIF) || (ac97->flags & AC97_CS_SPDIF)) {
 196                 if (ac97->flags & AC97_CS_SPDIF)
 197                         val = snd_ac97_read(ac97, AC97_CSR_SPDIF);
 198                 else
 199                         val = snd_ac97_read(ac97, AC97_SPDIF);
 200
 201                 snd_iprintf(buffer, "SPDIF Control    :%s%s%s%s Category=0x%x Generation=%i%s%s%s\n",
 202                         val & AC97_SC_PRO ? " PRO" : " Consumer",
 203                         val & AC97_SC_NAUDIO ? " Non-audio" : " PCM",
 204                         val & AC97_SC_COPY ? "" : " Copyright",
 205                         val & AC97_SC_PRE ? " Preemph50/15" : "",
 206                         (val & AC97_SC_CC_MASK) >> AC97_SC_CC_SHIFT,
 207                         (val & AC97_SC_L) >> 11,
 208                         (ac97->flags & AC97_CS_SPDIF) ?
 209                             spdif_rates_cs4205[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT] :
 210                             spdif_rates[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT],
 211                         (ac97->flags & AC97_CS_SPDIF) ?
 212                             (val & AC97_SC_DRS ? " Validity" : "") :
 213                             (val & AC97_SC_DRS ? " DRS" : ""),
 214                         (ac97->flags & AC97_CS_SPDIF) ?
 215                             (val & AC97_SC_V ? " Enabled" : "") :
 216                             (val & AC97_SC_V ? " Validity" : ""));
 217                 /* ALC650 specific*/
 218                 if ((ac97->id & 0xfffffff0) == 0x414c4720 &&
 219                     (snd_ac97_read(ac97, AC97_ALC650_CLOCK) & 0x01)) {
 220                         val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);
 221                         if (val & AC97_ALC650_CLOCK_LOCK) {
 222                                 val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS1);
 223                                 snd_iprintf(buffer, "SPDIF In Status  :%s%s%s%s Category=0x%x Generation=%i",
 224                                             val & AC97_ALC650_PRO ? " PRO" : " Consumer",
 225                                             val & AC97_ALC650_NAUDIO ? " Non-audio" : " PCM",
 226                                             val & AC97_ALC650_COPY ? "" : " Copyright",
 227                                             val & AC97_ALC650_PRE ? " Preemph50/15" : "",
 228                                             (val & AC97_ALC650_CC_MASK) >> AC97_ALC650_CC_SHIFT,
 229                                             (val & AC97_ALC650_L) >> 15);
 230                                 val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);
 231                                 snd_iprintf(buffer, "%s Accuracy=%i%s%s\n",
 232                                             spdif_rates[(val & AC97_ALC650_SPSR_MASK) >> AC97_ALC650_SPSR_SHIFT],
 233                                             (val & AC97_ALC650_CLOCK_ACCURACY) >> AC97_ALC650_CLOCK_SHIFT,
 234                                             (val & AC97_ALC650_CLOCK_LOCK ? " Locked" : " Unlocked"),
 235                                             (val & AC97_ALC650_V ? " Validity?" : ""));
 236                         } else {
 237                                 snd_iprintf(buffer, "SPDIF In Status  : Not Locked\n");
 238                         }
 239                 }
 240         }
 241         if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {
 242                 val = snd_ac97_read(ac97, AC97_INT_PAGING);
 243                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
 244                                      AC97_PAGE_MASK, AC97_PAGE_1);
 245                 snd_ac97_proc_read_functions(ac97, buffer);
 246                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
 247                                      AC97_PAGE_MASK, val & AC97_PAGE_MASK);
 248         }
 249
 250
 251       __modem:
 252         mext = snd_ac97_read(ac97, AC97_EXTENDED_MID);
 253         if (mext == 0)
 254                 return;
 255
 256         snd_iprintf(buffer, "Extended modem ID: codec=%i%s%s%s%s%s\n",
 257                         (mext & AC97_MEI_ADDR_MASK) >> AC97_MEI_ADDR_SHIFT,
 258                         mext & AC97_MEI_CID2 ? " CID2" : "",
 259                         mext & AC97_MEI_CID1 ? " CID1" : "",
 260                         mext & AC97_MEI_HANDSET ? " HSET" : "",
 261                         mext & AC97_MEI_LINE2 ? " LIN2" : "",
 262                         mext & AC97_MEI_LINE1 ? " LIN1" : "");
 263         val = snd_ac97_read(ac97, AC97_EXTENDED_MSTATUS);
 264         snd_iprintf(buffer, "Modem status     :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
 265                         val & AC97_MEA_GPIO ? " GPIO" : "",
 266                         val & AC97_MEA_MREF ? " MREF" : "",
 267                         val & AC97_MEA_ADC1 ? " ADC1" : "",
 268                         val & AC97_MEA_DAC1 ? " DAC1" : "",
 269                         val & AC97_MEA_ADC2 ? " ADC2" : "",
 270                         val & AC97_MEA_DAC2 ? " DAC2" : "",
 271                         val & AC97_MEA_HADC ? " HADC" : "",
 272                         val & AC97_MEA_HDAC ? " HDAC" : "",
 273                         val & AC97_MEA_PRA ? " PRA(GPIO)" : "",
 274                         val & AC97_MEA_PRB ? " PRB(res)" : "",
 275                         val & AC97_MEA_PRC ? " PRC(ADC1)" : "",
 276                         val & AC97_MEA_PRD ? " PRD(DAC1)" : "",
 277                         val & AC97_MEA_PRE ? " PRE(ADC2)" : "",
 278                         val & AC97_MEA_PRF ? " PRF(DAC2)" : "",
 279                         val & AC97_MEA_PRG ? " PRG(HADC)" : "",
 280                         val & AC97_MEA_PRH ? " PRH(HDAC)" : "");
 281         if (mext & AC97_MEI_LINE1) {
 282                 val = snd_ac97_read(ac97, AC97_LINE1_RATE);
 283                 snd_iprintf(buffer, "Line1 rate       : %iHz\n", val);
 284         }
 285         if (mext & AC97_MEI_LINE2) {
 286                 val = snd_ac97_read(ac97, AC97_LINE2_RATE);
 287                 snd_iprintf(buffer, "Line2 rate       : %iHz\n", val);
 288         }
 289         if (mext & AC97_MEI_HANDSET) {
 290                 val = snd_ac97_read(ac97, AC97_HANDSET_RATE);
 291                 snd_iprintf(buffer, "Headset rate     : %iHz\n", val);
 292         }
 293 }
 294
 295 static void snd_ac97_proc_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
 296 {
 297         ac97_t *ac97 = entry->private_data;
 298
 299         down(&ac97->page_mutex);
 300         if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) {        // Analog Devices AD1881/85/86
 301                 int idx;
 302                 for (idx = 0; idx < 3; idx++)
 303                         if (ac97->spec.ad18xx.id[idx]) {
 304                                 /* select single codec */
 305                                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
 306                                                      ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);
 307                                 snd_ac97_proc_read_main(ac97, buffer, idx);
 308                                 snd_iprintf(buffer, "\n\n");
 309                         }
 310                 /* select all codecs */
 311                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
 312
 313                 snd_iprintf(buffer, "\nAD18XX configuration\n");
 314                 snd_iprintf(buffer, "Unchained        : 0x%04x,0x%04x,0x%04x\n",
 315                         ac97->spec.ad18xx.unchained[0],
 316                         ac97->spec.ad18xx.unchained[1],
 317                         ac97->spec.ad18xx.unchained[2]);
 318                 snd_iprintf(buffer, "Chained          : 0x%04x,0x%04x,0x%04x\n",
 319                         ac97->spec.ad18xx.chained[0],
 320                         ac97->spec.ad18xx.chained[1],
 321                         ac97->spec.ad18xx.chained[2]);
 322         } else {
 323                 snd_ac97_proc_read_main(ac97, buffer, 0);
 324         }
 325         up(&ac97->page_mutex);
 326 }
 327
 328 #ifdef CONFIG_SND_DEBUG
 329 /* direct register write for debugging */
 330 static void snd_ac97_proc_regs_write(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
 331 {
 332         ac97_t *ac97 = entry->private_data;
 333         char line[64];
 334         unsigned int reg, val;
 335         down(&ac97->page_mutex);
 336         while (!snd_info_get_line(buffer, line, sizeof(line))) {
 337                 if (sscanf(line, "%x %x", &reg, &val) != 2)
 338                         continue;
 339                 /* register must be even */
 340                 if (reg < 0x80 && (reg & 1) == 0 && val <= 0xffff)
 341                         snd_ac97_write_cache(ac97, reg, val);
 342         }
 343         up(&ac97->page_mutex);
 344 }
 345 #endif
 346
 347 static void snd_ac97_proc_regs_read_main(ac97_t *ac97, snd_info_buffer_t * buffer, int subidx)
 348 {
 349         int reg, val;
 350
 351         for (reg = 0; reg < 0x80; reg += 2) {
 352                 val = snd_ac97_read(ac97, reg);
 353                 snd_iprintf(buffer, "%i:%02x = %04x\n", subidx, reg, val);
 354         }
 355 }
 356
 357 static void snd_ac97_proc_regs_read(snd_info_entry_t *entry,
 358                                     snd_info_buffer_t * buffer)
 359 {
 360         ac97_t *ac97 = entry->private_data;
 361
 362         down(&ac97->page_mutex);
 363         if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) {        // Analog Devices AD1881/85/86
 364
 365                 int idx;
 366                 for (idx = 0; idx < 3; idx++)
 367                         if (ac97->spec.ad18xx.id[idx]) {
 368                                 /* select single codec */
 369                                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
 370                                                      ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);
 371                                 snd_ac97_proc_regs_read_main(ac97, buffer, idx);
 372                         }
 373                 /* select all codecs */
 374                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
 375         } else {
 376                 snd_ac97_proc_regs_read_main(ac97, buffer, 0);
 377         }
 378         up(&ac97->page_mutex);
 379 }
 380
 381 void snd_ac97_proc_init(ac97_t * ac97)
 382 {
 383         snd_info_entry_t *entry;
 384         char name[32];
 385         const char *prefix;
 386
 387         if (ac97->bus->proc == NULL)
 388                 return;
 389         prefix = ac97_is_audio(ac97) ? "ac97" : "mc97";
 390         sprintf(name, "%s#%d-%d", prefix, ac97->addr, ac97->num);
 391         if ((entry = snd_info_create_card_entry(ac97->bus->card, name, ac97->bus->proc)) != NULL) {
 392                 snd_info_set_text_ops(entry, ac97, 1024, snd_ac97_proc_read);
 393                 if (snd_info_register(entry) < 0) {
 394                         snd_info_free_entry(entry);
 395                         entry = NULL;
 396                 }
 397         }
 398         ac97->proc = entry;
 399         sprintf(name, "%s#%d-%d+regs", prefix, ac97->addr, ac97->num);
 400         if ((entry = snd_info_create_card_entry(ac97->bus->card, name, ac97->bus->proc)) != NULL) {
 401                 snd_info_set_text_ops(entry, ac97, 1024, snd_ac97_proc_regs_read);
 402 #ifdef CONFIG_SND_DEBUG
 403                 entry->mode |= S_IWUSR;
 404                 entry->c.text.write_size = 1024;
 405                 entry->c.text.write = snd_ac97_proc_regs_write;
 406 #endif
 407                 if (snd_info_register(entry) < 0) {
 408                         snd_info_free_entry(entry);
 409                         entry = NULL;
 410                 }
 411         }
 412         ac97->proc_regs = entry;
 413 }
 414
 415 void snd_ac97_proc_done(ac97_t * ac97)
 416 {
 417         if (ac97->proc_regs) {
 418                 snd_info_unregister(ac97->proc_regs);
 419                 ac97->proc_regs = NULL;
 420         }
 421         if (ac97->proc) {
 422                 snd_info_unregister(ac97->proc);
 423                 ac97->proc = NULL;
 424         }
 425 }
 426
 427 void snd_ac97_bus_proc_init(ac97_bus_t * bus)
 428 {
 429         snd_info_entry_t *entry;
 430         char name[32];
 431
 432         sprintf(name, "codec97#%d", bus->num);
 433         if ((entry = snd_info_create_card_entry(bus->card, name, bus->card->proc_root)) != NULL) {
 434                 entry->mode = S_IFDIR | S_IRUGO | S_IXUGO;
 435                 if (snd_info_register(entry) < 0) {
 436                         snd_info_free_entry(entry);
 437                         entry = NULL;
 438                 }
 439         }
 440         bus->proc = entry;
 441 }
 442
 443 void snd_ac97_bus_proc_done(ac97_bus_t * bus)
 444 {
 445         if (bus->proc) {
 446                 snd_info_unregister(bus->proc);
 447                 bus->proc = NULL;
 448         }
 449 }