V4L/DVB (5507): Pvrusb2: Gather USB bus address info and report it
[linux-2.6] / drivers / media / video / pvrusb2 / pvrusb2-sysfs.c
1 /*
2  *
3  *  $Id$
4  *
5  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; either version 2 of the License
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  *
20  */
21
22 #include <linux/string.h>
23 #include <linux/slab.h>
24 #include <asm/semaphore.h>
25 #include "pvrusb2-sysfs.h"
26 #include "pvrusb2-hdw.h"
27 #include "pvrusb2-debug.h"
28 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
29 #include "pvrusb2-debugifc.h"
30 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
31
32 #define pvr2_sysfs_trace(...) pvr2_trace(PVR2_TRACE_SYSFS,__VA_ARGS__)
33
34 struct pvr2_sysfs {
35         struct pvr2_channel channel;
36         struct class_device *class_dev;
37 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
38         struct pvr2_sysfs_debugifc *debugifc;
39 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
40         struct pvr2_sysfs_ctl_item *item_first;
41         struct pvr2_sysfs_ctl_item *item_last;
42         struct class_device_attribute attr_v4l_minor_number;
43         struct class_device_attribute attr_v4l_radio_minor_number;
44         struct class_device_attribute attr_unit_number;
45         struct class_device_attribute attr_bus_info;
46         int v4l_minor_number_created_ok;
47         int v4l_radio_minor_number_created_ok;
48         int unit_number_created_ok;
49         int bus_info_created_ok;
50 };
51
52 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
53 struct pvr2_sysfs_debugifc {
54         struct class_device_attribute attr_debugcmd;
55         struct class_device_attribute attr_debuginfo;
56         int debugcmd_created_ok;
57         int debuginfo_created_ok;
58 };
59 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
60
61 struct pvr2_sysfs_ctl_item {
62         struct class_device_attribute attr_name;
63         struct class_device_attribute attr_type;
64         struct class_device_attribute attr_min;
65         struct class_device_attribute attr_max;
66         struct class_device_attribute attr_enum;
67         struct class_device_attribute attr_bits;
68         struct class_device_attribute attr_val;
69         struct class_device_attribute attr_custom;
70         struct pvr2_ctrl *cptr;
71         struct pvr2_sysfs *chptr;
72         struct pvr2_sysfs_ctl_item *item_next;
73         struct attribute *attr_gen[7];
74         struct attribute_group grp;
75         int created_ok;
76         char name[80];
77 };
78
79 struct pvr2_sysfs_class {
80         struct class class;
81 };
82
83 static ssize_t show_name(int id,struct class_device *class_dev,char *buf)
84 {
85         struct pvr2_ctrl *cptr;
86         struct pvr2_sysfs *sfp;
87         const char *name;
88
89         sfp = (struct pvr2_sysfs *)class_dev->class_data;
90         if (!sfp) return -EINVAL;
91         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
92         if (!cptr) return -EINVAL;
93
94         name = pvr2_ctrl_get_desc(cptr);
95         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",sfp,id,name);
96
97         if (!name) return -EINVAL;
98
99         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
100 }
101
102 static ssize_t show_type(int id,struct class_device *class_dev,char *buf)
103 {
104         struct pvr2_ctrl *cptr;
105         struct pvr2_sysfs *sfp;
106         const char *name;
107         enum pvr2_ctl_type tp;
108
109         sfp = (struct pvr2_sysfs *)class_dev->class_data;
110         if (!sfp) return -EINVAL;
111         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
112         if (!cptr) return -EINVAL;
113
114         tp = pvr2_ctrl_get_type(cptr);
115         switch (tp) {
116         case pvr2_ctl_int: name = "integer"; break;
117         case pvr2_ctl_enum: name = "enum"; break;
118         case pvr2_ctl_bitmask: name = "bitmask"; break;
119         case pvr2_ctl_bool: name = "boolean"; break;
120         default: name = "?"; break;
121         }
122         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",sfp,id,name);
123
124         if (!name) return -EINVAL;
125
126         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
127 }
128
129 static ssize_t show_min(int id,struct class_device *class_dev,char *buf)
130 {
131         struct pvr2_ctrl *cptr;
132         struct pvr2_sysfs *sfp;
133         long val;
134
135         sfp = (struct pvr2_sysfs *)class_dev->class_data;
136         if (!sfp) return -EINVAL;
137         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
138         if (!cptr) return -EINVAL;
139         val = pvr2_ctrl_get_min(cptr);
140
141         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",sfp,id,val);
142
143         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
144 }
145
146 static ssize_t show_max(int id,struct class_device *class_dev,char *buf)
147 {
148         struct pvr2_ctrl *cptr;
149         struct pvr2_sysfs *sfp;
150         long val;
151
152         sfp = (struct pvr2_sysfs *)class_dev->class_data;
153         if (!sfp) return -EINVAL;
154         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
155         if (!cptr) return -EINVAL;
156         val = pvr2_ctrl_get_max(cptr);
157
158         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",sfp,id,val);
159
160         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
161 }
162
163 static ssize_t show_val_norm(int id,struct class_device *class_dev,char *buf)
164 {
165         struct pvr2_ctrl *cptr;
166         struct pvr2_sysfs *sfp;
167         int val,ret;
168         unsigned int cnt = 0;
169
170         sfp = (struct pvr2_sysfs *)class_dev->class_data;
171         if (!sfp) return -EINVAL;
172         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
173         if (!cptr) return -EINVAL;
174
175         ret = pvr2_ctrl_get_value(cptr,&val);
176         if (ret < 0) return ret;
177
178         ret = pvr2_ctrl_value_to_sym(cptr,~0,val,
179                                      buf,PAGE_SIZE-1,&cnt);
180
181         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
182                          sfp,id,cnt,buf,val);
183         buf[cnt] = '\n';
184         return cnt+1;
185 }
186
187 static ssize_t show_val_custom(int id,struct class_device *class_dev,char *buf)
188 {
189         struct pvr2_ctrl *cptr;
190         struct pvr2_sysfs *sfp;
191         int val,ret;
192         unsigned int cnt = 0;
193
194         sfp = (struct pvr2_sysfs *)class_dev->class_data;
195         if (!sfp) return -EINVAL;
196         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
197         if (!cptr) return -EINVAL;
198
199         ret = pvr2_ctrl_get_value(cptr,&val);
200         if (ret < 0) return ret;
201
202         ret = pvr2_ctrl_custom_value_to_sym(cptr,~0,val,
203                                             buf,PAGE_SIZE-1,&cnt);
204
205         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
206                          sfp,id,cnt,buf,val);
207         buf[cnt] = '\n';
208         return cnt+1;
209 }
210
211 static ssize_t show_enum(int id,struct class_device *class_dev,char *buf)
212 {
213         struct pvr2_ctrl *cptr;
214         struct pvr2_sysfs *sfp;
215         long val;
216         unsigned int bcnt,ccnt,ecnt;
217
218         sfp = (struct pvr2_sysfs *)class_dev->class_data;
219         if (!sfp) return -EINVAL;
220         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
221         if (!cptr) return -EINVAL;
222         ecnt = pvr2_ctrl_get_cnt(cptr);
223         bcnt = 0;
224         for (val = 0; val < ecnt; val++) {
225                 pvr2_ctrl_get_valname(cptr,val,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
226                 if (!ccnt) continue;
227                 bcnt += ccnt;
228                 if (bcnt >= PAGE_SIZE) break;
229                 buf[bcnt] = '\n';
230                 bcnt++;
231         }
232         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",sfp,id);
233         return bcnt;
234 }
235
236 static ssize_t show_bits(int id,struct class_device *class_dev,char *buf)
237 {
238         struct pvr2_ctrl *cptr;
239         struct pvr2_sysfs *sfp;
240         int valid_bits,msk;
241         unsigned int bcnt,ccnt;
242
243         sfp = (struct pvr2_sysfs *)class_dev->class_data;
244         if (!sfp) return -EINVAL;
245         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
246         if (!cptr) return -EINVAL;
247         valid_bits = pvr2_ctrl_get_mask(cptr);
248         bcnt = 0;
249         for (msk = 1; valid_bits; msk <<= 1) {
250                 if (!(msk & valid_bits)) continue;
251                 valid_bits &= ~msk;
252                 pvr2_ctrl_get_valname(cptr,msk,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
253                 bcnt += ccnt;
254                 if (bcnt >= PAGE_SIZE) break;
255                 buf[bcnt] = '\n';
256                 bcnt++;
257         }
258         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",sfp,id);
259         return bcnt;
260 }
261
262 static int store_val_any(int id,int customfl,struct pvr2_sysfs *sfp,
263                          const char *buf,unsigned int count)
264 {
265         struct pvr2_ctrl *cptr;
266         int ret;
267         int mask,val;
268
269         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
270         if (customfl) {
271                 ret = pvr2_ctrl_custom_sym_to_value(cptr,buf,count,&mask,&val);
272         } else {
273                 ret = pvr2_ctrl_sym_to_value(cptr,buf,count,&mask,&val);
274         }
275         if (ret < 0) return ret;
276         ret = pvr2_ctrl_set_mask_value(cptr,mask,val);
277         pvr2_hdw_commit_ctl(sfp->channel.hdw);
278         return ret;
279 }
280
281 static ssize_t store_val_norm(int id,struct class_device *class_dev,
282                              const char *buf,size_t count)
283 {
284         struct pvr2_sysfs *sfp;
285         int ret;
286         sfp = (struct pvr2_sysfs *)class_dev->class_data;
287         ret = store_val_any(id,0,sfp,buf,count);
288         if (!ret) ret = count;
289         return ret;
290 }
291
292 static ssize_t store_val_custom(int id,struct class_device *class_dev,
293                                 const char *buf,size_t count)
294 {
295         struct pvr2_sysfs *sfp;
296         int ret;
297         sfp = (struct pvr2_sysfs *)class_dev->class_data;
298         ret = store_val_any(id,1,sfp,buf,count);
299         if (!ret) ret = count;
300         return ret;
301 }
302
303 /*
304   Mike Isely <isely@pobox.com> 30-April-2005
305
306   This next batch of horrible preprocessor hackery is needed because the
307   kernel's class_device_attribute mechanism fails to pass the actual
308   attribute through to the show / store functions, which means we have no
309   way to package up any attribute-specific parameters, like for example the
310   control id.  So we work around this brain-damage by encoding the control
311   id into the show / store functions themselves and pick the function based
312   on the control id we're setting up.  These macros try to ease the pain.
313   Yuck.
314 */
315
316 #define CREATE_SHOW_INSTANCE(sf_name,ctl_id) \
317 static ssize_t sf_name##_##ctl_id(struct class_device *class_dev,char *buf) \
318 { return sf_name(ctl_id,class_dev,buf); }
319
320 #define CREATE_STORE_INSTANCE(sf_name,ctl_id) \
321 static ssize_t sf_name##_##ctl_id(struct class_device *class_dev,const char *buf,size_t count) \
322 { return sf_name(ctl_id,class_dev,buf,count); }
323
324 #define CREATE_BATCH(ctl_id) \
325 CREATE_SHOW_INSTANCE(show_name,ctl_id) \
326 CREATE_SHOW_INSTANCE(show_type,ctl_id) \
327 CREATE_SHOW_INSTANCE(show_min,ctl_id) \
328 CREATE_SHOW_INSTANCE(show_max,ctl_id) \
329 CREATE_SHOW_INSTANCE(show_val_norm,ctl_id) \
330 CREATE_SHOW_INSTANCE(show_val_custom,ctl_id) \
331 CREATE_SHOW_INSTANCE(show_enum,ctl_id) \
332 CREATE_SHOW_INSTANCE(show_bits,ctl_id) \
333 CREATE_STORE_INSTANCE(store_val_norm,ctl_id) \
334 CREATE_STORE_INSTANCE(store_val_custom,ctl_id) \
335
336 CREATE_BATCH(0)
337 CREATE_BATCH(1)
338 CREATE_BATCH(2)
339 CREATE_BATCH(3)
340 CREATE_BATCH(4)
341 CREATE_BATCH(5)
342 CREATE_BATCH(6)
343 CREATE_BATCH(7)
344 CREATE_BATCH(8)
345 CREATE_BATCH(9)
346 CREATE_BATCH(10)
347 CREATE_BATCH(11)
348 CREATE_BATCH(12)
349 CREATE_BATCH(13)
350 CREATE_BATCH(14)
351 CREATE_BATCH(15)
352 CREATE_BATCH(16)
353 CREATE_BATCH(17)
354 CREATE_BATCH(18)
355 CREATE_BATCH(19)
356 CREATE_BATCH(20)
357 CREATE_BATCH(21)
358 CREATE_BATCH(22)
359 CREATE_BATCH(23)
360 CREATE_BATCH(24)
361 CREATE_BATCH(25)
362 CREATE_BATCH(26)
363 CREATE_BATCH(27)
364 CREATE_BATCH(28)
365 CREATE_BATCH(29)
366 CREATE_BATCH(30)
367 CREATE_BATCH(31)
368 CREATE_BATCH(32)
369 CREATE_BATCH(33)
370 CREATE_BATCH(34)
371 CREATE_BATCH(35)
372 CREATE_BATCH(36)
373 CREATE_BATCH(37)
374 CREATE_BATCH(38)
375 CREATE_BATCH(39)
376 CREATE_BATCH(40)
377 CREATE_BATCH(41)
378 CREATE_BATCH(42)
379 CREATE_BATCH(43)
380 CREATE_BATCH(44)
381 CREATE_BATCH(45)
382 CREATE_BATCH(46)
383 CREATE_BATCH(47)
384 CREATE_BATCH(48)
385 CREATE_BATCH(49)
386 CREATE_BATCH(50)
387 CREATE_BATCH(51)
388 CREATE_BATCH(52)
389 CREATE_BATCH(53)
390 CREATE_BATCH(54)
391 CREATE_BATCH(55)
392 CREATE_BATCH(56)
393 CREATE_BATCH(57)
394 CREATE_BATCH(58)
395 CREATE_BATCH(59)
396
397 struct pvr2_sysfs_func_set {
398         ssize_t (*show_name)(struct class_device *,char *);
399         ssize_t (*show_type)(struct class_device *,char *);
400         ssize_t (*show_min)(struct class_device *,char *);
401         ssize_t (*show_max)(struct class_device *,char *);
402         ssize_t (*show_enum)(struct class_device *,char *);
403         ssize_t (*show_bits)(struct class_device *,char *);
404         ssize_t (*show_val_norm)(struct class_device *,char *);
405         ssize_t (*store_val_norm)(struct class_device *,
406                                   const char *,size_t);
407         ssize_t (*show_val_custom)(struct class_device *,char *);
408         ssize_t (*store_val_custom)(struct class_device *,
409                                     const char *,size_t);
410 };
411
412 #define INIT_BATCH(ctl_id) \
413 [ctl_id] = { \
414     .show_name = show_name_##ctl_id, \
415     .show_type = show_type_##ctl_id, \
416     .show_min = show_min_##ctl_id, \
417     .show_max = show_max_##ctl_id, \
418     .show_enum = show_enum_##ctl_id, \
419     .show_bits = show_bits_##ctl_id, \
420     .show_val_norm = show_val_norm_##ctl_id, \
421     .store_val_norm = store_val_norm_##ctl_id, \
422     .show_val_custom = show_val_custom_##ctl_id, \
423     .store_val_custom = store_val_custom_##ctl_id, \
424 } \
425
426 static struct pvr2_sysfs_func_set funcs[] = {
427         INIT_BATCH(0),
428         INIT_BATCH(1),
429         INIT_BATCH(2),
430         INIT_BATCH(3),
431         INIT_BATCH(4),
432         INIT_BATCH(5),
433         INIT_BATCH(6),
434         INIT_BATCH(7),
435         INIT_BATCH(8),
436         INIT_BATCH(9),
437         INIT_BATCH(10),
438         INIT_BATCH(11),
439         INIT_BATCH(12),
440         INIT_BATCH(13),
441         INIT_BATCH(14),
442         INIT_BATCH(15),
443         INIT_BATCH(16),
444         INIT_BATCH(17),
445         INIT_BATCH(18),
446         INIT_BATCH(19),
447         INIT_BATCH(20),
448         INIT_BATCH(21),
449         INIT_BATCH(22),
450         INIT_BATCH(23),
451         INIT_BATCH(24),
452         INIT_BATCH(25),
453         INIT_BATCH(26),
454         INIT_BATCH(27),
455         INIT_BATCH(28),
456         INIT_BATCH(29),
457         INIT_BATCH(30),
458         INIT_BATCH(31),
459         INIT_BATCH(32),
460         INIT_BATCH(33),
461         INIT_BATCH(34),
462         INIT_BATCH(35),
463         INIT_BATCH(36),
464         INIT_BATCH(37),
465         INIT_BATCH(38),
466         INIT_BATCH(39),
467         INIT_BATCH(40),
468         INIT_BATCH(41),
469         INIT_BATCH(42),
470         INIT_BATCH(43),
471         INIT_BATCH(44),
472         INIT_BATCH(45),
473         INIT_BATCH(46),
474         INIT_BATCH(47),
475         INIT_BATCH(48),
476         INIT_BATCH(49),
477         INIT_BATCH(50),
478         INIT_BATCH(51),
479         INIT_BATCH(52),
480         INIT_BATCH(53),
481         INIT_BATCH(54),
482         INIT_BATCH(55),
483         INIT_BATCH(56),
484         INIT_BATCH(57),
485         INIT_BATCH(58),
486         INIT_BATCH(59),
487 };
488
489
490 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
491 {
492         struct pvr2_sysfs_ctl_item *cip;
493         struct pvr2_sysfs_func_set *fp;
494         struct pvr2_ctrl *cptr;
495         unsigned int cnt,acnt;
496         int ret;
497
498         if ((ctl_id < 0) || (ctl_id >= ARRAY_SIZE(funcs))) {
499                 return;
500         }
501
502         fp = funcs + ctl_id;
503         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
504         if (!cptr) return;
505
506         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
507         if (!cip) return;
508         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
509
510         cip->cptr = cptr;
511
512         cip->chptr = sfp;
513         cip->item_next = NULL;
514         if (sfp->item_last) {
515                 sfp->item_last->item_next = cip;
516         } else {
517                 sfp->item_first = cip;
518         }
519         sfp->item_last = cip;
520
521         cip->attr_name.attr.owner = THIS_MODULE;
522         cip->attr_name.attr.name = "name";
523         cip->attr_name.attr.mode = S_IRUGO;
524         cip->attr_name.show = fp->show_name;
525
526         cip->attr_type.attr.owner = THIS_MODULE;
527         cip->attr_type.attr.name = "type";
528         cip->attr_type.attr.mode = S_IRUGO;
529         cip->attr_type.show = fp->show_type;
530
531         cip->attr_min.attr.owner = THIS_MODULE;
532         cip->attr_min.attr.name = "min_val";
533         cip->attr_min.attr.mode = S_IRUGO;
534         cip->attr_min.show = fp->show_min;
535
536         cip->attr_max.attr.owner = THIS_MODULE;
537         cip->attr_max.attr.name = "max_val";
538         cip->attr_max.attr.mode = S_IRUGO;
539         cip->attr_max.show = fp->show_max;
540
541         cip->attr_val.attr.owner = THIS_MODULE;
542         cip->attr_val.attr.name = "cur_val";
543         cip->attr_val.attr.mode = S_IRUGO;
544
545         cip->attr_custom.attr.owner = THIS_MODULE;
546         cip->attr_custom.attr.name = "custom_val";
547         cip->attr_custom.attr.mode = S_IRUGO;
548
549         cip->attr_enum.attr.owner = THIS_MODULE;
550         cip->attr_enum.attr.name = "enum_val";
551         cip->attr_enum.attr.mode = S_IRUGO;
552         cip->attr_enum.show = fp->show_enum;
553
554         cip->attr_bits.attr.owner = THIS_MODULE;
555         cip->attr_bits.attr.name = "bit_val";
556         cip->attr_bits.attr.mode = S_IRUGO;
557         cip->attr_bits.show = fp->show_bits;
558
559         if (pvr2_ctrl_is_writable(cptr)) {
560                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
561                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
562         }
563
564         acnt = 0;
565         cip->attr_gen[acnt++] = &cip->attr_name.attr;
566         cip->attr_gen[acnt++] = &cip->attr_type.attr;
567         cip->attr_gen[acnt++] = &cip->attr_val.attr;
568         cip->attr_val.show = fp->show_val_norm;
569         cip->attr_val.store = fp->store_val_norm;
570         if (pvr2_ctrl_has_custom_symbols(cptr)) {
571                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
572                 cip->attr_custom.show = fp->show_val_custom;
573                 cip->attr_custom.store = fp->store_val_custom;
574         }
575         switch (pvr2_ctrl_get_type(cptr)) {
576         case pvr2_ctl_enum:
577                 // Control is an enumeration
578                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
579                 break;
580         case pvr2_ctl_int:
581                 // Control is an integer
582                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
583                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
584                 break;
585         case pvr2_ctl_bitmask:
586                 // Control is an bitmask
587                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
588                 break;
589         default: break;
590         }
591
592         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
593                         pvr2_ctrl_get_name(cptr));
594         cip->name[cnt] = 0;
595         cip->grp.name = cip->name;
596         cip->grp.attrs = cip->attr_gen;
597
598         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
599         if (ret) {
600                 printk(KERN_WARNING "%s: sysfs_create_group error: %d\n",
601                        __FUNCTION__, ret);
602                 return;
603         }
604         cip->created_ok = !0;
605 }
606
607 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
608 static ssize_t debuginfo_show(struct class_device *,char *);
609 static ssize_t debugcmd_show(struct class_device *,char *);
610 static ssize_t debugcmd_store(struct class_device *,const char *,size_t count);
611
612 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
613 {
614         struct pvr2_sysfs_debugifc *dip;
615         int ret;
616
617         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
618         if (!dip) return;
619         dip->attr_debugcmd.attr.owner = THIS_MODULE;
620         dip->attr_debugcmd.attr.name = "debugcmd";
621         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
622         dip->attr_debugcmd.show = debugcmd_show;
623         dip->attr_debugcmd.store = debugcmd_store;
624         dip->attr_debuginfo.attr.owner = THIS_MODULE;
625         dip->attr_debuginfo.attr.name = "debuginfo";
626         dip->attr_debuginfo.attr.mode = S_IRUGO;
627         dip->attr_debuginfo.show = debuginfo_show;
628         sfp->debugifc = dip;
629         ret = class_device_create_file(sfp->class_dev,&dip->attr_debugcmd);
630         if (ret < 0) {
631                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
632                        __FUNCTION__, ret);
633         } else {
634                 dip->debugcmd_created_ok = !0;
635         }
636         ret = class_device_create_file(sfp->class_dev,&dip->attr_debuginfo);
637         if (ret < 0) {
638                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
639                        __FUNCTION__, ret);
640         } else {
641                 dip->debuginfo_created_ok = !0;
642         }
643 }
644
645
646 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
647 {
648         if (!sfp->debugifc) return;
649         if (sfp->debugifc->debuginfo_created_ok) {
650                 class_device_remove_file(sfp->class_dev,
651                                          &sfp->debugifc->attr_debuginfo);
652         }
653         if (sfp->debugifc->debugcmd_created_ok) {
654                 class_device_remove_file(sfp->class_dev,
655                                          &sfp->debugifc->attr_debugcmd);
656         }
657         kfree(sfp->debugifc);
658         sfp->debugifc = NULL;
659 }
660 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
661
662
663 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
664 {
665         unsigned int idx,cnt;
666         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
667         for (idx = 0; idx < cnt; idx++) {
668                 pvr2_sysfs_add_control(sfp,idx);
669         }
670 }
671
672
673 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
674 {
675         struct pvr2_sysfs_ctl_item *cip1,*cip2;
676         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
677                 cip2 = cip1->item_next;
678                 if (cip1->created_ok) {
679                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
680                 }
681                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
682                 kfree(cip1);
683         }
684 }
685
686
687 static void pvr2_sysfs_class_release(struct class *class)
688 {
689         struct pvr2_sysfs_class *clp;
690         clp = container_of(class,struct pvr2_sysfs_class,class);
691         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
692         kfree(clp);
693 }
694
695
696 static void pvr2_sysfs_release(struct class_device *class_dev)
697 {
698         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
699         kfree(class_dev);
700 }
701
702
703 static void class_dev_destroy(struct pvr2_sysfs *sfp)
704 {
705         if (!sfp->class_dev) return;
706 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
707         pvr2_sysfs_tear_down_debugifc(sfp);
708 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
709         pvr2_sysfs_tear_down_controls(sfp);
710         if (sfp->bus_info_created_ok) {
711                 class_device_remove_file(sfp->class_dev,
712                                          &sfp->attr_bus_info);
713         }
714         if (sfp->v4l_minor_number_created_ok) {
715                 class_device_remove_file(sfp->class_dev,
716                                          &sfp->attr_v4l_minor_number);
717         }
718         if (sfp->v4l_radio_minor_number_created_ok) {
719                 class_device_remove_file(sfp->class_dev,
720                                          &sfp->attr_v4l_radio_minor_number);
721         }
722         if (sfp->unit_number_created_ok) {
723                 class_device_remove_file(sfp->class_dev,
724                                          &sfp->attr_unit_number);
725         }
726         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
727         sfp->class_dev->class_data = NULL;
728         class_device_unregister(sfp->class_dev);
729         sfp->class_dev = NULL;
730 }
731
732
733 static ssize_t v4l_minor_number_show(struct class_device *class_dev,char *buf)
734 {
735         struct pvr2_sysfs *sfp;
736         sfp = (struct pvr2_sysfs *)class_dev->class_data;
737         if (!sfp) return -EINVAL;
738         return scnprintf(buf,PAGE_SIZE,"%d\n",
739                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
740                                                        pvr2_v4l_type_video));
741 }
742
743
744 static ssize_t bus_info_show(struct class_device *class_dev,char *buf)
745 {
746         struct pvr2_sysfs *sfp;
747         sfp = (struct pvr2_sysfs *)class_dev->class_data;
748         if (!sfp) return -EINVAL;
749         return scnprintf(buf,PAGE_SIZE,"%s\n",
750                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
751 }
752
753
754 static ssize_t v4l_radio_minor_number_show(struct class_device *class_dev,
755                                            char *buf)
756 {
757         struct pvr2_sysfs *sfp;
758         sfp = (struct pvr2_sysfs *)class_dev->class_data;
759         if (!sfp) return -EINVAL;
760         return scnprintf(buf,PAGE_SIZE,"%d\n",
761                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
762                                                        pvr2_v4l_type_radio));
763 }
764
765
766 static ssize_t unit_number_show(struct class_device *class_dev,char *buf)
767 {
768         struct pvr2_sysfs *sfp;
769         sfp = (struct pvr2_sysfs *)class_dev->class_data;
770         if (!sfp) return -EINVAL;
771         return scnprintf(buf,PAGE_SIZE,"%d\n",
772                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
773 }
774
775
776 static void class_dev_create(struct pvr2_sysfs *sfp,
777                              struct pvr2_sysfs_class *class_ptr)
778 {
779         struct usb_device *usb_dev;
780         struct class_device *class_dev;
781         int ret;
782
783         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
784         if (!usb_dev) return;
785         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
786         if (!class_dev) return;
787
788         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
789
790         class_dev->class = &class_ptr->class;
791         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
792                 snprintf(class_dev->class_id,BUS_ID_SIZE,"sn-%lu",
793                          pvr2_hdw_get_sn(sfp->channel.hdw));
794         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
795                 snprintf(class_dev->class_id,BUS_ID_SIZE,"unit-%c",
796                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
797         } else {
798                 kfree(class_dev);
799                 return;
800         }
801
802         class_dev->dev = &usb_dev->dev;
803
804         sfp->class_dev = class_dev;
805         class_dev->class_data = sfp;
806         ret = class_device_register(class_dev);
807         if (ret) {
808                 printk(KERN_ERR "%s: class_device_register failed\n",
809                        __FUNCTION__);
810                 kfree(class_dev);
811                 return;
812         }
813
814         sfp->attr_v4l_minor_number.attr.owner = THIS_MODULE;
815         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
816         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
817         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
818         sfp->attr_v4l_minor_number.store = NULL;
819         ret = class_device_create_file(sfp->class_dev,
820                                        &sfp->attr_v4l_minor_number);
821         if (ret < 0) {
822                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
823                        __FUNCTION__, ret);
824         } else {
825                 sfp->v4l_minor_number_created_ok = !0;
826         }
827
828         sfp->attr_v4l_radio_minor_number.attr.owner = THIS_MODULE;
829         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
830         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
831         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
832         sfp->attr_v4l_radio_minor_number.store = NULL;
833         ret = class_device_create_file(sfp->class_dev,
834                                        &sfp->attr_v4l_radio_minor_number);
835         if (ret < 0) {
836                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
837                        __FUNCTION__, ret);
838         } else {
839                 sfp->v4l_radio_minor_number_created_ok = !0;
840         }
841
842         sfp->attr_unit_number.attr.owner = THIS_MODULE;
843         sfp->attr_unit_number.attr.name = "unit_number";
844         sfp->attr_unit_number.attr.mode = S_IRUGO;
845         sfp->attr_unit_number.show = unit_number_show;
846         sfp->attr_unit_number.store = NULL;
847         ret = class_device_create_file(sfp->class_dev,&sfp->attr_unit_number);
848         if (ret < 0) {
849                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
850                        __FUNCTION__, ret);
851         } else {
852                 sfp->unit_number_created_ok = !0;
853         }
854
855         sfp->attr_bus_info.attr.owner = THIS_MODULE;
856         sfp->attr_bus_info.attr.name = "bus_info_str";
857         sfp->attr_bus_info.attr.mode = S_IRUGO;
858         sfp->attr_bus_info.show = bus_info_show;
859         sfp->attr_bus_info.store = NULL;
860         ret = class_device_create_file(sfp->class_dev,
861                                        &sfp->attr_bus_info);
862         if (ret < 0) {
863                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
864                        __FUNCTION__, ret);
865         } else {
866                 sfp->bus_info_created_ok = !0;
867         }
868
869         pvr2_sysfs_add_controls(sfp);
870 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
871         pvr2_sysfs_add_debugifc(sfp);
872 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
873 }
874
875
876 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
877 {
878         struct pvr2_sysfs *sfp;
879         sfp = container_of(chp,struct pvr2_sysfs,channel);
880         if (!sfp->channel.mc_head->disconnect_flag) return;
881         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
882         class_dev_destroy(sfp);
883         pvr2_channel_done(&sfp->channel);
884         kfree(sfp);
885 }
886
887
888 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
889                                      struct pvr2_sysfs_class *class_ptr)
890 {
891         struct pvr2_sysfs *sfp;
892         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
893         if (!sfp) return sfp;
894         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
895         pvr2_channel_init(&sfp->channel,mp);
896         sfp->channel.check_func = pvr2_sysfs_internal_check;
897
898         class_dev_create(sfp,class_ptr);
899         return sfp;
900 }
901
902
903 static int pvr2_sysfs_hotplug(struct class_device *cd,char **envp,
904                               int numenvp,char *buf,int size)
905 {
906         /* Even though we don't do anything here, we still need this function
907            because sysfs will still try to call it. */
908         return 0;
909 }
910
911 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
912 {
913         struct pvr2_sysfs_class *clp;
914         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
915         if (!clp) return clp;
916         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
917         clp->class.name = "pvrusb2";
918         clp->class.class_release = pvr2_sysfs_class_release;
919         clp->class.release = pvr2_sysfs_release;
920         clp->class.uevent = pvr2_sysfs_hotplug;
921         if (class_register(&clp->class)) {
922                 pvr2_sysfs_trace(
923                         "Registration failed for pvr2_sysfs_class id=%p",clp);
924                 kfree(clp);
925                 clp = NULL;
926         }
927         return clp;
928 }
929
930
931 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
932 {
933         class_unregister(&clp->class);
934 }
935
936
937 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
938 static ssize_t debuginfo_show(struct class_device *class_dev,char *buf)
939 {
940         struct pvr2_sysfs *sfp;
941         sfp = (struct pvr2_sysfs *)class_dev->class_data;
942         if (!sfp) return -EINVAL;
943         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
944         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
945 }
946
947
948 static ssize_t debugcmd_show(struct class_device *class_dev,char *buf)
949 {
950         struct pvr2_sysfs *sfp;
951         sfp = (struct pvr2_sysfs *)class_dev->class_data;
952         if (!sfp) return -EINVAL;
953         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
954 }
955
956
957 static ssize_t debugcmd_store(struct class_device *class_dev,
958                               const char *buf,size_t count)
959 {
960         struct pvr2_sysfs *sfp;
961         int ret;
962
963         sfp = (struct pvr2_sysfs *)class_dev->class_data;
964         if (!sfp) return -EINVAL;
965
966         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
967         if (ret < 0) return ret;
968         return count;
969 }
970 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
971
972
973 /*
974   Stuff for Emacs to see, in order to encourage consistent editing style:
975   *** Local Variables: ***
976   *** mode: c ***
977   *** fill-column: 75 ***
978   *** tab-width: 8 ***
979   *** c-basic-offset: 8 ***
980   *** End: ***
981   */