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
  83
  84         if ((ac97->scaps & AC97_SCAP_AUDIO) == 0)
  85                 goto __modem;
  86
  87         snd_iprintf(buffer, "PCI Subsys Vendor: 0x%04x\n",
  88                     ac97->subsystem_vendor);
  89         snd_iprintf(buffer, "PCI Subsys Device: 0x%04x\n\n",
  90                     ac97->subsystem_device);
  91
  92         if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {
  93                 val = snd_ac97_read(ac97, AC97_INT_PAGING);
  94                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
  95                                      AC97_PAGE_MASK, AC97_PAGE_1);
  96                 tmp = snd_ac97_read(ac97, AC97_CODEC_CLASS_REV);
  97                 snd_iprintf(buffer, "Revision         : 0x%02x\n", tmp & 0xff);
  98                 snd_iprintf(buffer, "Compat. Class    : 0x%02x\n", (tmp >> 8) & 0x1f);
  99                 snd_iprintf(buffer, "Subsys. Vendor ID: 0x%04x\n",
 100                             snd_ac97_read(ac97, AC97_PCI_SVID));
 101                 snd_iprintf(buffer, "Subsys. ID       : 0x%04x\n\n",
 102                             snd_ac97_read(ac97, AC97_PCI_SID));
 103                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
 104                                      AC97_PAGE_MASK, val & AC97_PAGE_MASK);
 105         }
 106
 107         // val = snd_ac97_read(ac97, AC97_RESET);
 108         val = ac97->caps;
 109         snd_iprintf(buffer, "Capabilities     :%s%s%s%s%s%s\n",
 110                     val & AC97_BC_DEDICATED_MIC ? " -dedicated MIC PCM IN channel-" : "",
 111                     val & AC97_BC_RESERVED1 ? " -reserved1-" : "",
 112                     val & AC97_BC_BASS_TREBLE ? " -bass & treble-" : "",
 113                     val & AC97_BC_SIM_STEREO ? " -simulated stereo-" : "",
 114                     val & AC97_BC_HEADPHONE ? " -headphone out-" : "",
 115                     val & AC97_BC_LOUDNESS ? " -loudness-" : "");
 116         tmp = ac97->caps & AC97_BC_DAC_MASK;
 117         snd_iprintf(buffer, "DAC resolution   : %s%s%s%s\n",
 118                     tmp == AC97_BC_16BIT_DAC ? "16-bit" : "",
 119                     tmp == AC97_BC_18BIT_DAC ? "18-bit" : "",
 120                     tmp == AC97_BC_20BIT_DAC ? "20-bit" : "",
 121                     tmp == AC97_BC_DAC_MASK ? "???" : "");
 122         tmp = ac97->caps & AC97_BC_ADC_MASK;
 123         snd_iprintf(buffer, "ADC resolution   : %s%s%s%s\n",
 124                     tmp == AC97_BC_16BIT_ADC ? "16-bit" : "",
 125                     tmp == AC97_BC_18BIT_ADC ? "18-bit" : "",
 126                     tmp == AC97_BC_20BIT_ADC ? "20-bit" : "",
 127                     tmp == AC97_BC_ADC_MASK ? "???" : "");
 128         snd_iprintf(buffer, "3D enhancement   : %s\n",
 129                 snd_ac97_stereo_enhancements[(val >> 10) & 0x1f]);
 130         snd_iprintf(buffer, "\nCurrent setup\n");
 131         val = snd_ac97_read(ac97, AC97_MIC);
 132         snd_iprintf(buffer, "Mic gain         : %s [%s]\n", val & 0x0040 ? "+20dB" : "+0dB", ac97->regs[AC97_MIC] & 0x0040 ? "+20dB" : "+0dB");
 133         val = snd_ac97_read(ac97, AC97_GENERAL_PURPOSE);
 134         snd_iprintf(buffer, "POP path         : %s 3D\n"
 135                     "Sim. stereo      : %s\n"
 136                     "3D enhancement   : %s\n"
 137                     "Loudness         : %s\n"
 138                     "Mono output      : %s\n"
 139                     "Mic select       : %s\n"
 140                     "ADC/DAC loopback : %s\n",
 141                     val & 0x8000 ? "post" : "pre",
 142                     val & 0x4000 ? "on" : "off",
 143                     val & 0x2000 ? "on" : "off",
 144                     val & 0x1000 ? "on" : "off",
 145                     val & 0x0200 ? "Mic" : "MIX",
 146                     val & 0x0100 ? "Mic2" : "Mic1",
 147                     val & 0x0080 ? "on" : "off");
 148         if (ac97->ext_id & AC97_EI_DRA)
 149                 snd_iprintf(buffer, "Double rate slots: %s\n",
 150                             double_rate_slots[(val >> 10) & 3]);
 151
 152         ext = snd_ac97_read(ac97, AC97_EXTENDED_ID);
 153         if (ext == 0)
 154                 goto __modem;
 155
 156         snd_iprintf(buffer, "Extended ID      : codec=%i rev=%i%s%s%s%s DSA=%i%s%s%s%s\n",
 157                         (ext & AC97_EI_ADDR_MASK) >> AC97_EI_ADDR_SHIFT,
 158                         (ext & AC97_EI_REV_MASK) >> AC97_EI_REV_SHIFT,
 159                         ext & AC97_EI_AMAP ? " AMAP" : "",
 160                         ext & AC97_EI_LDAC ? " LDAC" : "",
 161                         ext & AC97_EI_SDAC ? " SDAC" : "",
 162                         ext & AC97_EI_CDAC ? " CDAC" : "",
 163                         (ext & AC97_EI_DACS_SLOT_MASK) >> AC97_EI_DACS_SLOT_SHIFT,
 164                         ext & AC97_EI_VRM ? " VRM" : "",
 165                         ext & AC97_EI_SPDIF ? " SPDIF" : "",
 166                         ext & AC97_EI_DRA ? " DRA" : "",
 167                         ext & AC97_EI_VRA ? " VRA" : "");
 168         val = snd_ac97_read(ac97, AC97_EXTENDED_STATUS);
 169         snd_iprintf(buffer, "Extended status  :%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
 170                         val & AC97_EA_PRL ? " PRL" : "",
 171                         val & AC97_EA_PRK ? " PRK" : "",
 172                         val & AC97_EA_PRJ ? " PRJ" : "",
 173                         val & AC97_EA_PRI ? " PRI" : "",
 174                         val & AC97_EA_SPCV ? " SPCV" : "",
 175                         val & AC97_EA_MDAC ? " MADC" : "",
 176                         val & AC97_EA_LDAC ? " LDAC" : "",
 177                         val & AC97_EA_SDAC ? " SDAC" : "",
 178                         val & AC97_EA_CDAC ? " CDAC" : "",
 179                         ext & AC97_EI_SPDIF ? spdif_slots[(val & AC97_EA_SPSA_SLOT_MASK) >> AC97_EA_SPSA_SLOT_SHIFT] : "",
 180                         val & AC97_EA_VRM ? " VRM" : "",
 181                         val & AC97_EA_SPDIF ? " SPDIF" : "",
 182                         val & AC97_EA_DRA ? " DRA" : "",
 183                         val & AC97_EA_VRA ? " VRA" : "");
 184         if (ext & AC97_EI_VRA) {        /* VRA */
 185                 val = snd_ac97_read(ac97, AC97_PCM_FRONT_DAC_RATE);
 186                 snd_iprintf(buffer, "PCM front DAC    : %iHz\n", val);
 187                 if (ext & AC97_EI_SDAC) {
 188                         val = snd_ac97_read(ac97, AC97_PCM_SURR_DAC_RATE);
 189                         snd_iprintf(buffer, "PCM Surr DAC     : %iHz\n", val);
 190                 }
 191                 if (ext & AC97_EI_LDAC) {
 192                         val = snd_ac97_read(ac97, AC97_PCM_LFE_DAC_RATE);
 193                         snd_iprintf(buffer, "PCM LFE DAC      : %iHz\n", val);
 194                 }
 195                 val = snd_ac97_read(ac97, AC97_PCM_LR_ADC_RATE);
 196                 snd_iprintf(buffer, "PCM ADC          : %iHz\n", val);
 197         }
 198         if (ext & AC97_EI_VRM) {
 199                 val = snd_ac97_read(ac97, AC97_PCM_MIC_ADC_RATE);
 200                 snd_iprintf(buffer, "PCM MIC ADC      : %iHz\n", val);
 201         }
 202         if ((ext & AC97_EI_SPDIF) || (ac97->flags & AC97_CS_SPDIF)) {
 203                 if (ac97->flags & AC97_CS_SPDIF)
 204                         val = snd_ac97_read(ac97, AC97_CSR_SPDIF);
 205                 else
 206                         val = snd_ac97_read(ac97, AC97_SPDIF);
 207
 208                 snd_iprintf(buffer, "SPDIF Control    :%s%s%s%s Category=0x%x Generation=%i%s%s%s\n",
 209                         val & AC97_SC_PRO ? " PRO" : " Consumer",
 210                         val & AC97_SC_NAUDIO ? " Non-audio" : " PCM",
 211                         val & AC97_SC_COPY ? "" : " Copyright",
 212                         val & AC97_SC_PRE ? " Preemph50/15" : "",
 213                         (val & AC97_SC_CC_MASK) >> AC97_SC_CC_SHIFT,
 214                         (val & AC97_SC_L) >> 11,
 215                         (ac97->flags & AC97_CS_SPDIF) ?
 216                             spdif_rates_cs4205[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT] :
 217                             spdif_rates[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT],
 218                         (ac97->flags & AC97_CS_SPDIF) ?
 219                             (val & AC97_SC_DRS ? " Validity" : "") :
 220                             (val & AC97_SC_DRS ? " DRS" : ""),
 221                         (ac97->flags & AC97_CS_SPDIF) ?
 222                             (val & AC97_SC_V ? " Enabled" : "") :
 223                             (val & AC97_SC_V ? " Validity" : ""));
 224                 /* ALC650 specific*/
 225                 if ((ac97->id & 0xfffffff0) == 0x414c4720 &&
 226                     (snd_ac97_read(ac97, AC97_ALC650_CLOCK) & 0x01)) {
 227                         val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);
 228                         if (val & AC97_ALC650_CLOCK_LOCK) {
 229                                 val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS1);
 230                                 snd_iprintf(buffer, "SPDIF In Status  :%s%s%s%s Category=0x%x Generation=%i",
 231                                             val & AC97_ALC650_PRO ? " PRO" : " Consumer",
 232                                             val & AC97_ALC650_NAUDIO ? " Non-audio" : " PCM",
 233                                             val & AC97_ALC650_COPY ? "" : " Copyright",
 234                                             val & AC97_ALC650_PRE ? " Preemph50/15" : "",
 235                                             (val & AC97_ALC650_CC_MASK) >> AC97_ALC650_CC_SHIFT,
 236                                             (val & AC97_ALC650_L) >> 15);
 237                                 val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);
 238                                 snd_iprintf(buffer, "%s Accuracy=%i%s%s\n",
 239                                             spdif_rates[(val & AC97_ALC650_SPSR_MASK) >> AC97_ALC650_SPSR_SHIFT],
 240                                             (val & AC97_ALC650_CLOCK_ACCURACY) >> AC97_ALC650_CLOCK_SHIFT,
 241                                             (val & AC97_ALC650_CLOCK_LOCK ? " Locked" : " Unlocked"),
 242                                             (val & AC97_ALC650_V ? " Validity?" : ""));
 243                         } else {
 244                                 snd_iprintf(buffer, "SPDIF In Status  : Not Locked\n");
 245                         }
 246                 }
 247         }
 248         if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {
 249                 val = snd_ac97_read(ac97, AC97_INT_PAGING);
 250                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
 251                                      AC97_PAGE_MASK, AC97_PAGE_1);
 252                 snd_ac97_proc_read_functions(ac97, buffer);
 253                 snd_ac97_update_bits(ac97, AC97_INT_PAGING,
 254                                      AC97_PAGE_MASK, val & AC97_PAGE_MASK);
 255         }
 256
 257
 258       __modem:
 259         mext = snd_ac97_read(ac97, AC97_EXTENDED_MID);
 260         if (mext == 0)
 261                 return;
 262
 263         snd_iprintf(buffer, "Extended modem ID: codec=%i%s%s%s%s%s\n",
 264                         (mext & AC97_MEI_ADDR_MASK) >> AC97_MEI_ADDR_SHIFT,
 265                         mext & AC97_MEI_CID2 ? " CID2" : "",
 266                         mext & AC97_MEI_CID1 ? " CID1" : "",
 267                         mext & AC97_MEI_HANDSET ? " HSET" : "",
 268                         mext & AC97_MEI_LINE2 ? " LIN2" : "",
 269                         mext & AC97_MEI_LINE1 ? " LIN1" : "");
 270         val = snd_ac97_read(ac97, AC97_EXTENDED_MSTATUS);
 271         snd_iprintf(buffer, "Modem status     :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
 272                         val & AC97_MEA_GPIO ? " GPIO" : "",
 273                         val & AC97_MEA_MREF ? " MREF" : "",
 274                         val & AC97_MEA_ADC1 ? " ADC1" : "",
 275                         val & AC97_MEA_DAC1 ? " DAC1" : "",
 276                         val & AC97_MEA_ADC2 ? " ADC2" : "",
 277                         val & AC97_MEA_DAC2 ? " DAC2" : "",
 278                         val & AC97_MEA_HADC ? " HADC" : "",
 279                         val & AC97_MEA_HDAC ? " HDAC" : "",
 280                         val & AC97_MEA_PRA ? " PRA(GPIO)" : "",
 281                         val & AC97_MEA_PRB ? " PRB(res)" : "",
 282                         val & AC97_MEA_PRC ? " PRC(ADC1)" : "",
 283                         val & AC97_MEA_PRD ? " PRD(DAC1)" : "",
 284                         val & AC97_MEA_PRE ? " PRE(ADC2)" : "",
 285                         val & AC97_MEA_PRF ? " PRF(DAC2)" : "",
 286                         val & AC97_MEA_PRG ? " PRG(HADC)" : "",
 287                         val & AC97_MEA_PRH ? " PRH(HDAC)" : "");
 288         if (mext & AC97_MEI_LINE1) {
 289                 val = snd_ac97_read(ac97, AC97_LINE1_RATE);
 290                 snd_iprintf(buffer, "Line1 rate       : %iHz\n", val);
 291         }
 292         if (mext & AC97_MEI_LINE2) {
 293                 val = snd_ac97_read(ac97, AC97_LINE2_RATE);
 294                 snd_iprintf(buffer, "Line2 rate       : %iHz\n", val);
 295         }
 296         if (mext & AC97_MEI_HANDSET) {
 297                 val = snd_ac97_read(ac97, AC97_HANDSET_RATE);
 298                 snd_iprintf(buffer, "Headset rate     : %iHz\n", val);
 299         }
 300 }
 301
 302 static void snd_ac97_proc_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
 303 {
 304         ac97_t *ac97 = entry->private_data;
 305
 306         down(&ac97->page_mutex);
 307         if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) {        // Analog Devices AD1881/85/86
 308                 int idx;
 309                 for (idx = 0; idx < 3; idx++)
 310                         if (ac97->spec.ad18xx.id[idx]) {
 311                                 /* select single codec */
 312                                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
 313                                                      ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);
 314                                 snd_ac97_proc_read_main(ac97, buffer, idx);
 315                                 snd_iprintf(buffer, "\n\n");
 316                         }
 317                 /* select all codecs */
 318                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
 319
 320                 snd_iprintf(buffer, "\nAD18XX configuration\n");
 321                 snd_iprintf(buffer, "Unchained        : 0x%04x,0x%04x,0x%04x\n",
 322                         ac97->spec.ad18xx.unchained[0],
 323                         ac97->spec.ad18xx.unchained[1],
 324                         ac97->spec.ad18xx.unchained[2]);
 325                 snd_iprintf(buffer, "Chained          : 0x%04x,0x%04x,0x%04x\n",
 326                         ac97->spec.ad18xx.chained[0],
 327                         ac97->spec.ad18xx.chained[1],
 328                         ac97->spec.ad18xx.chained[2]);
 329         } else {
 330                 snd_ac97_proc_read_main(ac97, buffer, 0);
 331         }
 332         up(&ac97->page_mutex);
 333 }
 334
 335 #ifdef CONFIG_SND_DEBUG
 336 /* direct register write for debugging */
 337 static void snd_ac97_proc_regs_write(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
 338 {
 339         ac97_t *ac97 = entry->private_data;
 340         char line[64];
 341         unsigned int reg, val;
 342         down(&ac97->page_mutex);
 343         while (!snd_info_get_line(buffer, line, sizeof(line))) {
 344                 if (sscanf(line, "%x %x", &reg, &val) != 2)
 345                         continue;
 346                 /* register must be even */
 347                 if (reg < 0x80 && (reg & 1) == 0 && val <= 0xffff)
 348                         snd_ac97_write_cache(ac97, reg, val);
 349         }
 350         up(&ac97->page_mutex);
 351 }
 352 #endif
 353
 354 static void snd_ac97_proc_regs_read_main(ac97_t *ac97, snd_info_buffer_t * buffer, int subidx)
 355 {
 356         int reg, val;
 357
 358         for (reg = 0; reg < 0x80; reg += 2) {
 359                 val = snd_ac97_read(ac97, reg);
 360                 snd_iprintf(buffer, "%i:%02x = %04x\n", subidx, reg, val);
 361         }
 362 }
 363
 364 static void snd_ac97_proc_regs_read(snd_info_entry_t *entry,
 365                                     snd_info_buffer_t * buffer)
 366 {
 367         ac97_t *ac97 = entry->private_data;
 368
 369         down(&ac97->page_mutex);
 370         if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) {        // Analog Devices AD1881/85/86
 371
 372                 int idx;
 373                 for (idx = 0; idx < 3; idx++)
 374                         if (ac97->spec.ad18xx.id[idx]) {
 375                                 /* select single codec */
 376                                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
 377                                                      ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);
 378                                 snd_ac97_proc_regs_read_main(ac97, buffer, idx);
 379                         }
 380                 /* select all codecs */
 381                 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
 382         } else {
 383                 snd_ac97_proc_regs_read_main(ac97, buffer, 0);
 384         }
 385         up(&ac97->page_mutex);
 386 }
 387
 388 void snd_ac97_proc_init(ac97_t * ac97)
 389 {
 390         snd_info_entry_t *entry;
 391         char name[32];
 392         const char *prefix;
 393
 394         if (ac97->bus->proc == NULL)
 395                 return;
 396         prefix = ac97_is_audio(ac97) ? "ac97" : "mc97";
 397         sprintf(name, "%s#%d-%d", prefix, ac97->addr, ac97->num);
 398         if ((entry = snd_info_create_card_entry(ac97->bus->card, name, ac97->bus->proc)) != NULL) {
 399                 snd_info_set_text_ops(entry, ac97, 1024, snd_ac97_proc_read);
 400                 if (snd_info_register(entry) < 0) {
 401                         snd_info_free_entry(entry);
 402                         entry = NULL;
 403                 }
 404         }
 405         ac97->proc = entry;
 406         sprintf(name, "%s#%d-%d+regs", prefix, ac97->addr, ac97->num);
 407         if ((entry = snd_info_create_card_entry(ac97->bus->card, name, ac97->bus->proc)) != NULL) {
 408                 snd_info_set_text_ops(entry, ac97, 1024, snd_ac97_proc_regs_read);
 409 #ifdef CONFIG_SND_DEBUG
 410                 entry->mode |= S_IWUSR;
 411                 entry->c.text.write_size = 1024;
 412                 entry->c.text.write = snd_ac97_proc_regs_write;
 413 #endif
 414                 if (snd_info_register(entry) < 0) {
 415                         snd_info_free_entry(entry);
 416                         entry = NULL;
 417                 }
 418         }
 419         ac97->proc_regs = entry;
 420 }
 421
 422 void snd_ac97_proc_done(ac97_t * ac97)
 423 {
 424         if (ac97->proc_regs) {
 425                 snd_info_unregister(ac97->proc_regs);
 426                 ac97->proc_regs = NULL;
 427         }
 428         if (ac97->proc) {
 429                 snd_info_unregister(ac97->proc);
 430                 ac97->proc = NULL;
 431         }
 432 }
 433
 434 void snd_ac97_bus_proc_init(ac97_bus_t * bus)
 435 {
 436         snd_info_entry_t *entry;
 437         char name[32];
 438
 439         sprintf(name, "codec97#%d", bus->num);
 440         if ((entry = snd_info_create_card_entry(bus->card, name, bus->card->proc_root)) != NULL) {
 441                 entry->mode = S_IFDIR | S_IRUGO | S_IXUGO;
 442                 if (snd_info_register(entry) < 0) {
 443                         snd_info_free_entry(entry);
 444                         entry = NULL;
 445                 }
 446         }
 447         bus->proc = entry;
 448 }
 449
 450 void snd_ac97_bus_proc_done(ac97_bus_t * bus)
 451 {
 452         if (bus->proc) {
 453                 snd_info_unregister(bus->proc);
 454                 bus->proc = NULL;
 455         }
 456 }