[PATCH] ARM: Fix new-ABI layout of struct stat64
[linux-2.6] / 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 }