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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>4 * Universal interface for Audio Codec '975 *6 * For more details look to AC '97 component specification revision 2.27 * by Intel Corporation (http://developer.intel.com).8 */9 10#include <linux/mutex.h>11 12#include <sound/core.h>13#include <sound/ac97_codec.h>14#include <sound/asoundef.h>15#include "ac97_local.h"16#include "ac97_id.h"17 18/*19 * proc interface20 */21 22static void snd_ac97_proc_read_functions(struct snd_ac97 *ac97, struct snd_info_buffer *buffer)23{24 int header = 0, function;25 unsigned short info, sense_info;26 static const char *function_names[12] = {27 "Master Out", "AUX Out", "Center/LFE Out", "SPDIF Out",28 "Phone In", "Mic 1", "Mic 2", "Line In", "CD In", "Video In",29 "Aux In", "Mono Out"30 };31 static const char *locations[8] = {32 "Rear I/O Panel", "Front Panel", "Motherboard", "Dock/External",33 "reserved", "reserved", "reserved", "NC/unused"34 };35 36 for (function = 0; function < 12; ++function) {37 snd_ac97_write(ac97, AC97_FUNC_SELECT, function << 1);38 info = snd_ac97_read(ac97, AC97_FUNC_INFO);39 if (!(info & 0x0001))40 continue;41 if (!header) {42 snd_iprintf(buffer, "\n Gain Inverted Buffer delay Location\n");43 header = 1;44 }45 sense_info = snd_ac97_read(ac97, AC97_SENSE_INFO);46 snd_iprintf(buffer, "%-17s: %3d.%d dBV %c %2d/fs %s\n",47 function_names[function],48 (info & 0x8000 ? -1 : 1) * ((info & 0x7000) >> 12) * 3 / 2,49 ((info & 0x0800) >> 11) * 5,50 info & 0x0400 ? 'X' : '-',51 (info & 0x03e0) >> 5,52 locations[sense_info >> 13]);53 }54}55 56static const char *snd_ac97_stereo_enhancements[] =57{58 /* 0 */ "No 3D Stereo Enhancement",59 /* 1 */ "Analog Devices Phat Stereo",60 /* 2 */ "Creative Stereo Enhancement",61 /* 3 */ "National Semi 3D Stereo Enhancement",62 /* 4 */ "YAMAHA Ymersion",63 /* 5 */ "BBE 3D Stereo Enhancement",64 /* 6 */ "Crystal Semi 3D Stereo Enhancement",65 /* 7 */ "Qsound QXpander",66 /* 8 */ "Spatializer 3D Stereo Enhancement",67 /* 9 */ "SRS 3D Stereo Enhancement",68 /* 10 */ "Platform Tech 3D Stereo Enhancement",69 /* 11 */ "AKM 3D Audio",70 /* 12 */ "Aureal Stereo Enhancement",71 /* 13 */ "Aztech 3D Enhancement",72 /* 14 */ "Binaura 3D Audio Enhancement",73 /* 15 */ "ESS Technology Stereo Enhancement",74 /* 16 */ "Harman International VMAx",75 /* 17 */ "Nvidea/IC Ensemble/KS Waves 3D Stereo Enhancement",76 /* 18 */ "Philips Incredible Sound",77 /* 19 */ "Texas Instruments 3D Stereo Enhancement",78 /* 20 */ "VLSI Technology 3D Stereo Enhancement",79 /* 21 */ "TriTech 3D Stereo Enhancement",80 /* 22 */ "Realtek 3D Stereo Enhancement",81 /* 23 */ "Samsung 3D Stereo Enhancement",82 /* 24 */ "Wolfson Microelectronics 3D Enhancement",83 /* 25 */ "Delta Integration 3D Enhancement",84 /* 26 */ "SigmaTel 3D Enhancement",85 /* 27 */ "IC Ensemble/KS Waves",86 /* 28 */ "Rockwell 3D Stereo Enhancement",87 /* 29 */ "Reserved 29",88 /* 30 */ "Reserved 30",89 /* 31 */ "Reserved 31"90};91 92static void snd_ac97_proc_read_main(struct snd_ac97 *ac97, struct snd_info_buffer *buffer, int subidx)93{94 char name[64];95 unsigned short val, tmp, ext, mext;96 static const char *spdif_slots[4] = { " SPDIF=3/4", " SPDIF=7/8", " SPDIF=6/9", " SPDIF=10/11" };97 static const char *spdif_rates[4] = { " Rate=44.1kHz", " Rate=res", " Rate=48kHz", " Rate=32kHz" };98 static const char *spdif_rates_cs4205[4] = { " Rate=48kHz", " Rate=44.1kHz", " Rate=res", " Rate=res" };99 static const char *double_rate_slots[4] = { "10/11", "7/8", "reserved", "reserved" };100 101 snd_ac97_get_name(NULL, ac97->id, name, 0);102 snd_iprintf(buffer, "%d-%d/%d: %s\n\n", ac97->addr, ac97->num, subidx, name);103 104 if ((ac97->scaps & AC97_SCAP_AUDIO) == 0)105 goto __modem;106 107 snd_iprintf(buffer, "PCI Subsys Vendor: 0x%04x\n",108 ac97->subsystem_vendor);109 snd_iprintf(buffer, "PCI Subsys Device: 0x%04x\n\n",110 ac97->subsystem_device);111 112 snd_iprintf(buffer, "Flags: %x\n", ac97->flags);113 114 if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {115 val = snd_ac97_read(ac97, AC97_INT_PAGING);116 snd_ac97_update_bits(ac97, AC97_INT_PAGING,117 AC97_PAGE_MASK, AC97_PAGE_1);118 tmp = snd_ac97_read(ac97, AC97_CODEC_CLASS_REV);119 snd_iprintf(buffer, "Revision : 0x%02x\n", tmp & 0xff);120 snd_iprintf(buffer, "Compat. Class : 0x%02x\n", (tmp >> 8) & 0x1f);121 snd_iprintf(buffer, "Subsys. Vendor ID: 0x%04x\n",122 snd_ac97_read(ac97, AC97_PCI_SVID));123 snd_iprintf(buffer, "Subsys. ID : 0x%04x\n\n",124 snd_ac97_read(ac97, AC97_PCI_SID));125 snd_ac97_update_bits(ac97, AC97_INT_PAGING,126 AC97_PAGE_MASK, val & AC97_PAGE_MASK);127 }128 129 // val = snd_ac97_read(ac97, AC97_RESET);130 val = ac97->caps;131 snd_iprintf(buffer, "Capabilities :%s%s%s%s%s%s\n",132 val & AC97_BC_DEDICATED_MIC ? " -dedicated MIC PCM IN channel-" : "",133 val & AC97_BC_RESERVED1 ? " -reserved1-" : "",134 val & AC97_BC_BASS_TREBLE ? " -bass & treble-" : "",135 val & AC97_BC_SIM_STEREO ? " -simulated stereo-" : "",136 val & AC97_BC_HEADPHONE ? " -headphone out-" : "",137 val & AC97_BC_LOUDNESS ? " -loudness-" : "");138 tmp = ac97->caps & AC97_BC_DAC_MASK;139 snd_iprintf(buffer, "DAC resolution : %s%s%s%s\n",140 tmp == AC97_BC_16BIT_DAC ? "16-bit" : "",141 tmp == AC97_BC_18BIT_DAC ? "18-bit" : "",142 tmp == AC97_BC_20BIT_DAC ? "20-bit" : "",143 tmp == AC97_BC_DAC_MASK ? "???" : "");144 tmp = ac97->caps & AC97_BC_ADC_MASK;145 snd_iprintf(buffer, "ADC resolution : %s%s%s%s\n",146 tmp == AC97_BC_16BIT_ADC ? "16-bit" : "",147 tmp == AC97_BC_18BIT_ADC ? "18-bit" : "",148 tmp == AC97_BC_20BIT_ADC ? "20-bit" : "",149 tmp == AC97_BC_ADC_MASK ? "???" : "");150 snd_iprintf(buffer, "3D enhancement : %s\n",151 snd_ac97_stereo_enhancements[(val >> 10) & 0x1f]);152 snd_iprintf(buffer, "\nCurrent setup\n");153 val = snd_ac97_read(ac97, AC97_MIC);154 snd_iprintf(buffer, "Mic gain : %s [%s]\n", val & 0x0040 ? "+20dB" : "+0dB", ac97->regs[AC97_MIC] & 0x0040 ? "+20dB" : "+0dB");155 val = snd_ac97_read(ac97, AC97_GENERAL_PURPOSE);156 snd_iprintf(buffer, "POP path : %s 3D\n"157 "Sim. stereo : %s\n"158 "3D enhancement : %s\n"159 "Loudness : %s\n"160 "Mono output : %s\n"161 "Mic select : %s\n"162 "ADC/DAC loopback : %s\n",163 val & 0x8000 ? "post" : "pre",164 val & 0x4000 ? "on" : "off",165 val & 0x2000 ? "on" : "off",166 val & 0x1000 ? "on" : "off",167 val & 0x0200 ? "Mic" : "MIX",168 val & 0x0100 ? "Mic2" : "Mic1",169 val & 0x0080 ? "on" : "off");170 if (ac97->ext_id & AC97_EI_DRA)171 snd_iprintf(buffer, "Double rate slots: %s\n",172 double_rate_slots[(val >> 10) & 3]);173 174 ext = snd_ac97_read(ac97, AC97_EXTENDED_ID);175 if (ext == 0)176 goto __modem;177 178 snd_iprintf(buffer, "Extended ID : codec=%i rev=%i%s%s%s%s DSA=%i%s%s%s%s\n",179 (ext & AC97_EI_ADDR_MASK) >> AC97_EI_ADDR_SHIFT,180 (ext & AC97_EI_REV_MASK) >> AC97_EI_REV_SHIFT,181 ext & AC97_EI_AMAP ? " AMAP" : "",182 ext & AC97_EI_LDAC ? " LDAC" : "",183 ext & AC97_EI_SDAC ? " SDAC" : "",184 ext & AC97_EI_CDAC ? " CDAC" : "",185 (ext & AC97_EI_DACS_SLOT_MASK) >> AC97_EI_DACS_SLOT_SHIFT,186 ext & AC97_EI_VRM ? " VRM" : "",187 ext & AC97_EI_SPDIF ? " SPDIF" : "",188 ext & AC97_EI_DRA ? " DRA" : "",189 ext & AC97_EI_VRA ? " VRA" : "");190 val = snd_ac97_read(ac97, AC97_EXTENDED_STATUS);191 snd_iprintf(buffer, "Extended status :%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",192 val & AC97_EA_PRL ? " PRL" : "",193 val & AC97_EA_PRK ? " PRK" : "",194 val & AC97_EA_PRJ ? " PRJ" : "",195 val & AC97_EA_PRI ? " PRI" : "",196 val & AC97_EA_SPCV ? " SPCV" : "",197 val & AC97_EA_MDAC ? " MADC" : "",198 val & AC97_EA_LDAC ? " LDAC" : "",199 val & AC97_EA_SDAC ? " SDAC" : "",200 val & AC97_EA_CDAC ? " CDAC" : "",201 ext & AC97_EI_SPDIF ? spdif_slots[(val & AC97_EA_SPSA_SLOT_MASK) >> AC97_EA_SPSA_SLOT_SHIFT] : "",202 val & AC97_EA_VRM ? " VRM" : "",203 val & AC97_EA_SPDIF ? " SPDIF" : "",204 val & AC97_EA_DRA ? " DRA" : "",205 val & AC97_EA_VRA ? " VRA" : "");206 if (ext & AC97_EI_VRA) { /* VRA */207 val = snd_ac97_read(ac97, AC97_PCM_FRONT_DAC_RATE);208 snd_iprintf(buffer, "PCM front DAC : %iHz\n", val);209 if (ext & AC97_EI_SDAC) {210 val = snd_ac97_read(ac97, AC97_PCM_SURR_DAC_RATE);211 snd_iprintf(buffer, "PCM Surr DAC : %iHz\n", val);212 }213 if (ext & AC97_EI_LDAC) {214 val = snd_ac97_read(ac97, AC97_PCM_LFE_DAC_RATE);215 snd_iprintf(buffer, "PCM LFE DAC : %iHz\n", val);216 }217 val = snd_ac97_read(ac97, AC97_PCM_LR_ADC_RATE);218 snd_iprintf(buffer, "PCM ADC : %iHz\n", val);219 }220 if (ext & AC97_EI_VRM) {221 val = snd_ac97_read(ac97, AC97_PCM_MIC_ADC_RATE);222 snd_iprintf(buffer, "PCM MIC ADC : %iHz\n", val);223 }224 if ((ext & AC97_EI_SPDIF) || (ac97->flags & AC97_CS_SPDIF) ||225 (ac97->id == AC97_ID_YMF743)) {226 if (ac97->flags & AC97_CS_SPDIF)227 val = snd_ac97_read(ac97, AC97_CSR_SPDIF);228 else if (ac97->id == AC97_ID_YMF743) {229 val = snd_ac97_read(ac97, AC97_YMF7X3_DIT_CTRL);230 val = 0x2000 | (val & 0xff00) >> 4 | (val & 0x38) >> 2;231 } else232 val = snd_ac97_read(ac97, AC97_SPDIF);233 234 snd_iprintf(buffer, "SPDIF Control :%s%s%s%s Category=0x%x Generation=%i%s%s%s\n",235 val & AC97_SC_PRO ? " PRO" : " Consumer",236 val & AC97_SC_NAUDIO ? " Non-audio" : " PCM",237 val & AC97_SC_COPY ? "" : " Copyright",238 val & AC97_SC_PRE ? " Preemph50/15" : "",239 (val & AC97_SC_CC_MASK) >> AC97_SC_CC_SHIFT,240 (val & AC97_SC_L) >> 11,241 (ac97->flags & AC97_CS_SPDIF) ?242 spdif_rates_cs4205[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT] :243 spdif_rates[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT],244 (ac97->flags & AC97_CS_SPDIF) ?245 (val & AC97_SC_DRS ? " Validity" : "") :246 (val & AC97_SC_DRS ? " DRS" : ""),247 (ac97->flags & AC97_CS_SPDIF) ?248 (val & AC97_SC_V ? " Enabled" : "") :249 (val & AC97_SC_V ? " Validity" : ""));250 /* ALC650 specific*/251 if ((ac97->id & 0xfffffff0) == 0x414c4720 &&252 (snd_ac97_read(ac97, AC97_ALC650_CLOCK) & 0x01)) {253 val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);254 if (val & AC97_ALC650_CLOCK_LOCK) {255 val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS1);256 snd_iprintf(buffer, "SPDIF In Status :%s%s%s%s Category=0x%x Generation=%i",257 val & AC97_ALC650_PRO ? " PRO" : " Consumer",258 val & AC97_ALC650_NAUDIO ? " Non-audio" : " PCM",259 val & AC97_ALC650_COPY ? "" : " Copyright",260 val & AC97_ALC650_PRE ? " Preemph50/15" : "",261 (val & AC97_ALC650_CC_MASK) >> AC97_ALC650_CC_SHIFT,262 (val & AC97_ALC650_L) >> 15);263 val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);264 snd_iprintf(buffer, "%s Accuracy=%i%s%s\n",265 spdif_rates[(val & AC97_ALC650_SPSR_MASK) >> AC97_ALC650_SPSR_SHIFT],266 (val & AC97_ALC650_CLOCK_ACCURACY) >> AC97_ALC650_CLOCK_SHIFT,267 (val & AC97_ALC650_CLOCK_LOCK ? " Locked" : " Unlocked"),268 (val & AC97_ALC650_V ? " Validity?" : ""));269 } else {270 snd_iprintf(buffer, "SPDIF In Status : Not Locked\n");271 }272 }273 }274 if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {275 val = snd_ac97_read(ac97, AC97_INT_PAGING);276 snd_ac97_update_bits(ac97, AC97_INT_PAGING,277 AC97_PAGE_MASK, AC97_PAGE_1);278 snd_ac97_proc_read_functions(ac97, buffer);279 snd_ac97_update_bits(ac97, AC97_INT_PAGING,280 AC97_PAGE_MASK, val & AC97_PAGE_MASK);281 }282 283 284 __modem:285 mext = snd_ac97_read(ac97, AC97_EXTENDED_MID);286 if (mext == 0)287 return;288 289 snd_iprintf(buffer, "Extended modem ID: codec=%i%s%s%s%s%s\n",290 (mext & AC97_MEI_ADDR_MASK) >> AC97_MEI_ADDR_SHIFT,291 mext & AC97_MEI_CID2 ? " CID2" : "",292 mext & AC97_MEI_CID1 ? " CID1" : "",293 mext & AC97_MEI_HANDSET ? " HSET" : "",294 mext & AC97_MEI_LINE2 ? " LIN2" : "",295 mext & AC97_MEI_LINE1 ? " LIN1" : "");296 val = snd_ac97_read(ac97, AC97_EXTENDED_MSTATUS);297 snd_iprintf(buffer, "Modem status :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",298 val & AC97_MEA_GPIO ? " GPIO" : "",299 val & AC97_MEA_MREF ? " MREF" : "",300 val & AC97_MEA_ADC1 ? " ADC1" : "",301 val & AC97_MEA_DAC1 ? " DAC1" : "",302 val & AC97_MEA_ADC2 ? " ADC2" : "",303 val & AC97_MEA_DAC2 ? " DAC2" : "",304 val & AC97_MEA_HADC ? " HADC" : "",305 val & AC97_MEA_HDAC ? " HDAC" : "",306 val & AC97_MEA_PRA ? " PRA(GPIO)" : "",307 val & AC97_MEA_PRB ? " PRB(res)" : "",308 val & AC97_MEA_PRC ? " PRC(ADC1)" : "",309 val & AC97_MEA_PRD ? " PRD(DAC1)" : "",310 val & AC97_MEA_PRE ? " PRE(ADC2)" : "",311 val & AC97_MEA_PRF ? " PRF(DAC2)" : "",312 val & AC97_MEA_PRG ? " PRG(HADC)" : "",313 val & AC97_MEA_PRH ? " PRH(HDAC)" : "");314 if (mext & AC97_MEI_LINE1) {315 val = snd_ac97_read(ac97, AC97_LINE1_RATE);316 snd_iprintf(buffer, "Line1 rate : %iHz\n", val);317 }318 if (mext & AC97_MEI_LINE2) {319 val = snd_ac97_read(ac97, AC97_LINE2_RATE);320 snd_iprintf(buffer, "Line2 rate : %iHz\n", val);321 }322 if (mext & AC97_MEI_HANDSET) {323 val = snd_ac97_read(ac97, AC97_HANDSET_RATE);324 snd_iprintf(buffer, "Headset rate : %iHz\n", val);325 }326}327 328static void snd_ac97_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)329{330 struct snd_ac97 *ac97 = entry->private_data;331 332 mutex_lock(&ac97->page_mutex);333 if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) { // Analog Devices AD1881/85/86334 int idx;335 for (idx = 0; idx < 3; idx++)336 if (ac97->spec.ad18xx.id[idx]) {337 /* select single codec */338 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,339 ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);340 snd_ac97_proc_read_main(ac97, buffer, idx);341 snd_iprintf(buffer, "\n\n");342 }343 /* select all codecs */344 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);345 346 snd_iprintf(buffer, "\nAD18XX configuration\n");347 snd_iprintf(buffer, "Unchained : 0x%04x,0x%04x,0x%04x\n",348 ac97->spec.ad18xx.unchained[0],349 ac97->spec.ad18xx.unchained[1],350 ac97->spec.ad18xx.unchained[2]);351 snd_iprintf(buffer, "Chained : 0x%04x,0x%04x,0x%04x\n",352 ac97->spec.ad18xx.chained[0],353 ac97->spec.ad18xx.chained[1],354 ac97->spec.ad18xx.chained[2]);355 } else {356 snd_ac97_proc_read_main(ac97, buffer, 0);357 }358 mutex_unlock(&ac97->page_mutex);359}360 361#ifdef CONFIG_SND_DEBUG362/* direct register write for debugging */363static void snd_ac97_proc_regs_write(struct snd_info_entry *entry, struct snd_info_buffer *buffer)364{365 struct snd_ac97 *ac97 = entry->private_data;366 char line[64];367 unsigned int reg, val;368 mutex_lock(&ac97->page_mutex);369 while (!snd_info_get_line(buffer, line, sizeof(line))) {370 if (sscanf(line, "%x %x", ®, &val) != 2)371 continue;372 /* register must be even */373 if (reg < 0x80 && (reg & 1) == 0 && val <= 0xffff)374 snd_ac97_write_cache(ac97, reg, val);375 }376 mutex_unlock(&ac97->page_mutex);377}378#endif379 380static void snd_ac97_proc_regs_read_main(struct snd_ac97 *ac97, struct snd_info_buffer *buffer, int subidx)381{382 int reg, val;383 384 for (reg = 0; reg < 0x80; reg += 2) {385 val = snd_ac97_read(ac97, reg);386 snd_iprintf(buffer, "%i:%02x = %04x\n", subidx, reg, val);387 }388}389 390static void snd_ac97_proc_regs_read(struct snd_info_entry *entry, 391 struct snd_info_buffer *buffer)392{393 struct snd_ac97 *ac97 = entry->private_data;394 395 mutex_lock(&ac97->page_mutex);396 if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) { // Analog Devices AD1881/85/86397 398 int idx;399 for (idx = 0; idx < 3; idx++)400 if (ac97->spec.ad18xx.id[idx]) {401 /* select single codec */402 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,403 ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);404 snd_ac97_proc_regs_read_main(ac97, buffer, idx);405 }406 /* select all codecs */407 snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);408 } else {409 snd_ac97_proc_regs_read_main(ac97, buffer, 0);410 } 411 mutex_unlock(&ac97->page_mutex);412}413 414void snd_ac97_proc_init(struct snd_ac97 * ac97)415{416 struct snd_info_entry *entry;417 char name[32];418 const char *prefix;419 420 if (ac97->bus->proc == NULL)421 return;422 prefix = ac97_is_audio(ac97) ? "ac97" : "mc97";423 sprintf(name, "%s#%d-%d", prefix, ac97->addr, ac97->num);424 entry = snd_info_create_card_entry(ac97->bus->card, name,425 ac97->bus->proc);426 if (entry)427 snd_info_set_text_ops(entry, ac97, snd_ac97_proc_read);428 ac97->proc = entry;429 sprintf(name, "%s#%d-%d+regs", prefix, ac97->addr, ac97->num);430 entry = snd_info_create_card_entry(ac97->bus->card, name,431 ac97->bus->proc);432 if (entry) {433 snd_info_set_text_ops(entry, ac97, snd_ac97_proc_regs_read);434#ifdef CONFIG_SND_DEBUG435 entry->mode |= 0200;436 entry->c.text.write = snd_ac97_proc_regs_write;437#endif438 }439 ac97->proc_regs = entry;440}441 442void snd_ac97_proc_done(struct snd_ac97 * ac97)443{444 snd_info_free_entry(ac97->proc_regs);445 ac97->proc_regs = NULL;446 snd_info_free_entry(ac97->proc);447 ac97->proc = NULL;448}449 450void snd_ac97_bus_proc_init(struct snd_ac97_bus * bus)451{452 struct snd_info_entry *entry;453 char name[32];454 455 sprintf(name, "codec97#%d", bus->num);456 entry = snd_info_create_card_entry(bus->card, name,457 bus->card->proc_root);458 if (entry)459 entry->mode = S_IFDIR | 0555;460 bus->proc = entry;461}462 463void snd_ac97_bus_proc_done(struct snd_ac97_bus * bus)464{465 snd_info_free_entry(bus->proc);466 bus->proc = NULL;467}468