Merge git://git.infradead.org/mtd-2.6
[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 "pvrusb2-sysfs.h"
25 #include "pvrusb2-hdw.h"
26 #include "pvrusb2-debug.h"
27 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
28 #include "pvrusb2-debugifc.h"
29 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
30
31 #define pvr2_sysfs_trace(...) pvr2_trace(PVR2_TRACE_SYSFS,__VA_ARGS__)
32
33 struct pvr2_sysfs {
34         struct pvr2_channel channel;
35         struct device *class_dev;
36 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
37         struct pvr2_sysfs_debugifc *debugifc;
38 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
39         struct pvr2_sysfs_ctl_item *item_first;
40         struct pvr2_sysfs_ctl_item *item_last;
41         struct device_attribute attr_v4l_minor_number;
42         struct device_attribute attr_v4l_radio_minor_number;
43         struct device_attribute attr_unit_number;
44         struct device_attribute attr_bus_info;
45         struct device_attribute attr_hdw_name;
46         struct device_attribute attr_hdw_desc;
47         int v4l_minor_number_created_ok;
48         int v4l_radio_minor_number_created_ok;
49         int unit_number_created_ok;
50         int bus_info_created_ok;
51         int hdw_name_created_ok;
52         int hdw_desc_created_ok;
53 };
54
55 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
56 struct pvr2_sysfs_debugifc {
57         struct device_attribute attr_debugcmd;
58         struct device_attribute attr_debuginfo;
59         int debugcmd_created_ok;
60         int debuginfo_created_ok;
61 };
62 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
63
64 struct pvr2_sysfs_ctl_item {
65         struct device_attribute attr_name;
66         struct device_attribute attr_type;
67         struct device_attribute attr_min;
68         struct device_attribute attr_max;
69         struct device_attribute attr_enum;
70         struct device_attribute attr_bits;
71         struct device_attribute attr_val;
72         struct device_attribute attr_custom;
73         struct pvr2_ctrl *cptr;
74         struct pvr2_sysfs *chptr;
75         struct pvr2_sysfs_ctl_item *item_next;
76         struct attribute *attr_gen[7];
77         struct attribute_group grp;
78         int created_ok;
79         char name[80];
80 };
81
82 struct pvr2_sysfs_class {
83         struct class class;
84 };
85
86 static ssize_t show_name(int id,struct device *class_dev,char *buf)
87 {
88         struct pvr2_ctrl *cptr;
89         struct pvr2_sysfs *sfp;
90         const char *name;
91
92         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
93         if (!sfp) return -EINVAL;
94         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
95         if (!cptr) return -EINVAL;
96
97         name = pvr2_ctrl_get_desc(cptr);
98         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",sfp,id,name);
99
100         if (!name) return -EINVAL;
101
102         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
103 }
104
105 static ssize_t show_type(int id,struct device *class_dev,char *buf)
106 {
107         struct pvr2_ctrl *cptr;
108         struct pvr2_sysfs *sfp;
109         const char *name;
110         enum pvr2_ctl_type tp;
111
112         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
113         if (!sfp) return -EINVAL;
114         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
115         if (!cptr) return -EINVAL;
116
117         tp = pvr2_ctrl_get_type(cptr);
118         switch (tp) {
119         case pvr2_ctl_int: name = "integer"; break;
120         case pvr2_ctl_enum: name = "enum"; break;
121         case pvr2_ctl_bitmask: name = "bitmask"; break;
122         case pvr2_ctl_bool: name = "boolean"; break;
123         default: name = "?"; break;
124         }
125         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",sfp,id,name);
126
127         if (!name) return -EINVAL;
128
129         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
130 }
131
132 static ssize_t show_min(int id,struct device *class_dev,char *buf)
133 {
134         struct pvr2_ctrl *cptr;
135         struct pvr2_sysfs *sfp;
136         long val;
137
138         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
139         if (!sfp) return -EINVAL;
140         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
141         if (!cptr) return -EINVAL;
142         val = pvr2_ctrl_get_min(cptr);
143
144         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",sfp,id,val);
145
146         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
147 }
148
149 static ssize_t show_max(int id,struct device *class_dev,char *buf)
150 {
151         struct pvr2_ctrl *cptr;
152         struct pvr2_sysfs *sfp;
153         long val;
154
155         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
156         if (!sfp) return -EINVAL;
157         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
158         if (!cptr) return -EINVAL;
159         val = pvr2_ctrl_get_max(cptr);
160
161         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",sfp,id,val);
162
163         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
164 }
165
166 static ssize_t show_val_norm(int id,struct device *class_dev,char *buf)
167 {
168         struct pvr2_ctrl *cptr;
169         struct pvr2_sysfs *sfp;
170         int val,ret;
171         unsigned int cnt = 0;
172
173         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
174         if (!sfp) return -EINVAL;
175         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
176         if (!cptr) return -EINVAL;
177
178         ret = pvr2_ctrl_get_value(cptr,&val);
179         if (ret < 0) return ret;
180
181         ret = pvr2_ctrl_value_to_sym(cptr,~0,val,
182                                      buf,PAGE_SIZE-1,&cnt);
183
184         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
185                          sfp,id,cnt,buf,val);
186         buf[cnt] = '\n';
187         return cnt+1;
188 }
189
190 static ssize_t show_val_custom(int id,struct device *class_dev,char *buf)
191 {
192         struct pvr2_ctrl *cptr;
193         struct pvr2_sysfs *sfp;
194         int val,ret;
195         unsigned int cnt = 0;
196
197         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
198         if (!sfp) return -EINVAL;
199         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
200         if (!cptr) return -EINVAL;
201
202         ret = pvr2_ctrl_get_value(cptr,&val);
203         if (ret < 0) return ret;
204
205         ret = pvr2_ctrl_custom_value_to_sym(cptr,~0,val,
206                                             buf,PAGE_SIZE-1,&cnt);
207
208         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
209                          sfp,id,cnt,buf,val);
210         buf[cnt] = '\n';
211         return cnt+1;
212 }
213
214 static ssize_t show_enum(int id,struct device *class_dev,char *buf)
215 {
216         struct pvr2_ctrl *cptr;
217         struct pvr2_sysfs *sfp;
218         long val;
219         unsigned int bcnt,ccnt,ecnt;
220
221         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
222         if (!sfp) return -EINVAL;
223         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
224         if (!cptr) return -EINVAL;
225         ecnt = pvr2_ctrl_get_cnt(cptr);
226         bcnt = 0;
227         for (val = 0; val < ecnt; val++) {
228                 pvr2_ctrl_get_valname(cptr,val,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
229                 if (!ccnt) continue;
230                 bcnt += ccnt;
231                 if (bcnt >= PAGE_SIZE) break;
232                 buf[bcnt] = '\n';
233                 bcnt++;
234         }
235         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",sfp,id);
236         return bcnt;
237 }
238
239 static ssize_t show_bits(int id,struct device *class_dev,char *buf)
240 {
241         struct pvr2_ctrl *cptr;
242         struct pvr2_sysfs *sfp;
243         int valid_bits,msk;
244         unsigned int bcnt,ccnt;
245
246         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
247         if (!sfp) return -EINVAL;
248         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
249         if (!cptr) return -EINVAL;
250         valid_bits = pvr2_ctrl_get_mask(cptr);
251         bcnt = 0;
252         for (msk = 1; valid_bits; msk <<= 1) {
253                 if (!(msk & valid_bits)) continue;
254                 valid_bits &= ~msk;
255                 pvr2_ctrl_get_valname(cptr,msk,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
256                 bcnt += ccnt;
257                 if (bcnt >= PAGE_SIZE) break;
258                 buf[bcnt] = '\n';
259                 bcnt++;
260         }
261         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",sfp,id);
262         return bcnt;
263 }
264
265 static int store_val_any(int id,int customfl,struct pvr2_sysfs *sfp,
266                          const char *buf,unsigned int count)
267 {
268         struct pvr2_ctrl *cptr;
269         int ret;
270         int mask,val;
271
272         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
273         if (customfl) {
274                 ret = pvr2_ctrl_custom_sym_to_value(cptr,buf,count,&mask,&val);
275         } else {
276                 ret = pvr2_ctrl_sym_to_value(cptr,buf,count,&mask,&val);
277         }
278         if (ret < 0) return ret;
279         ret = pvr2_ctrl_set_mask_value(cptr,mask,val);
280         pvr2_hdw_commit_ctl(sfp->channel.hdw);
281         return ret;
282 }
283
284 static ssize_t store_val_norm(int id,struct device *class_dev,
285                              const char *buf,size_t count)
286 {
287         struct pvr2_sysfs *sfp;
288         int ret;
289         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
290         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
291                          sfp,id,(int)count,buf);
292         ret = store_val_any(id,0,sfp,buf,count);
293         if (!ret) ret = count;
294         return ret;
295 }
296
297 static ssize_t store_val_custom(int id,struct device *class_dev,
298                                 const char *buf,size_t count)
299 {
300         struct pvr2_sysfs *sfp;
301         int ret;
302         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
303         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
304                          sfp,id,(int)count,buf);
305         ret = store_val_any(id,1,sfp,buf,count);
306         if (!ret) ret = count;
307         return ret;
308 }
309
310 /*
311   Mike Isely <isely@pobox.com> 30-April-2005
312
313   This next batch of horrible preprocessor hackery is needed because the
314   kernel's device_attribute mechanism fails to pass the actual
315   attribute through to the show / store functions, which means we have no
316   way to package up any attribute-specific parameters, like for example the
317   control id.  So we work around this brain-damage by encoding the control
318   id into the show / store functions themselves and pick the function based
319   on the control id we're setting up.  These macros try to ease the pain.
320   Yuck.
321 */
322
323 #define CREATE_SHOW_INSTANCE(sf_name,ctl_id) \
324 static ssize_t sf_name##_##ctl_id(struct device *class_dev, \
325 struct device_attribute *attr, char *buf) \
326 { return sf_name(ctl_id,class_dev,buf); }
327
328 #define CREATE_STORE_INSTANCE(sf_name,ctl_id) \
329 static ssize_t sf_name##_##ctl_id(struct device *class_dev, \
330 struct device_attribute *attr, const char *buf, size_t count) \
331 { return sf_name(ctl_id,class_dev,buf,count); }
332
333 #define CREATE_BATCH(ctl_id) \
334 CREATE_SHOW_INSTANCE(show_name,ctl_id) \
335 CREATE_SHOW_INSTANCE(show_type,ctl_id) \
336 CREATE_SHOW_INSTANCE(show_min,ctl_id) \
337 CREATE_SHOW_INSTANCE(show_max,ctl_id) \
338 CREATE_SHOW_INSTANCE(show_val_norm,ctl_id) \
339 CREATE_SHOW_INSTANCE(show_val_custom,ctl_id) \
340 CREATE_SHOW_INSTANCE(show_enum,ctl_id) \
341 CREATE_SHOW_INSTANCE(show_bits,ctl_id) \
342 CREATE_STORE_INSTANCE(store_val_norm,ctl_id) \
343 CREATE_STORE_INSTANCE(store_val_custom,ctl_id) \
344
345 CREATE_BATCH(0)
346 CREATE_BATCH(1)
347 CREATE_BATCH(2)
348 CREATE_BATCH(3)
349 CREATE_BATCH(4)
350 CREATE_BATCH(5)
351 CREATE_BATCH(6)
352 CREATE_BATCH(7)
353 CREATE_BATCH(8)
354 CREATE_BATCH(9)
355 CREATE_BATCH(10)
356 CREATE_BATCH(11)
357 CREATE_BATCH(12)
358 CREATE_BATCH(13)
359 CREATE_BATCH(14)
360 CREATE_BATCH(15)
361 CREATE_BATCH(16)
362 CREATE_BATCH(17)
363 CREATE_BATCH(18)
364 CREATE_BATCH(19)
365 CREATE_BATCH(20)
366 CREATE_BATCH(21)
367 CREATE_BATCH(22)
368 CREATE_BATCH(23)
369 CREATE_BATCH(24)
370 CREATE_BATCH(25)
371 CREATE_BATCH(26)
372 CREATE_BATCH(27)
373 CREATE_BATCH(28)
374 CREATE_BATCH(29)
375 CREATE_BATCH(30)
376 CREATE_BATCH(31)
377 CREATE_BATCH(32)
378 CREATE_BATCH(33)
379 CREATE_BATCH(34)
380 CREATE_BATCH(35)
381 CREATE_BATCH(36)
382 CREATE_BATCH(37)
383 CREATE_BATCH(38)
384 CREATE_BATCH(39)
385 CREATE_BATCH(40)
386 CREATE_BATCH(41)
387 CREATE_BATCH(42)
388 CREATE_BATCH(43)
389 CREATE_BATCH(44)
390 CREATE_BATCH(45)
391 CREATE_BATCH(46)
392 CREATE_BATCH(47)
393 CREATE_BATCH(48)
394 CREATE_BATCH(49)
395 CREATE_BATCH(50)
396 CREATE_BATCH(51)
397 CREATE_BATCH(52)
398 CREATE_BATCH(53)
399 CREATE_BATCH(54)
400 CREATE_BATCH(55)
401 CREATE_BATCH(56)
402 CREATE_BATCH(57)
403 CREATE_BATCH(58)
404 CREATE_BATCH(59)
405
406 struct pvr2_sysfs_func_set {
407         ssize_t (*show_name)(struct device *,
408                              struct device_attribute *attr, char *);
409         ssize_t (*show_type)(struct device *,
410                              struct device_attribute *attr, char *);
411         ssize_t (*show_min)(struct device *,
412                             struct device_attribute *attr, char *);
413         ssize_t (*show_max)(struct device *,
414                             struct device_attribute *attr, char *);
415         ssize_t (*show_enum)(struct device *,
416                              struct device_attribute *attr, char *);
417         ssize_t (*show_bits)(struct device *,
418                              struct device_attribute *attr, char *);
419         ssize_t (*show_val_norm)(struct device *,
420                                  struct device_attribute *attr, char *);
421         ssize_t (*store_val_norm)(struct device *,
422                                   struct device_attribute *attr,
423                                   const char *,size_t);
424         ssize_t (*show_val_custom)(struct device *,
425                                    struct device_attribute *attr, char *);
426         ssize_t (*store_val_custom)(struct device *,
427                                     struct device_attribute *attr,
428                                     const char *,size_t);
429 };
430
431 #define INIT_BATCH(ctl_id) \
432 [ctl_id] = { \
433     .show_name = show_name_##ctl_id, \
434     .show_type = show_type_##ctl_id, \
435     .show_min = show_min_##ctl_id, \
436     .show_max = show_max_##ctl_id, \
437     .show_enum = show_enum_##ctl_id, \
438     .show_bits = show_bits_##ctl_id, \
439     .show_val_norm = show_val_norm_##ctl_id, \
440     .store_val_norm = store_val_norm_##ctl_id, \
441     .show_val_custom = show_val_custom_##ctl_id, \
442     .store_val_custom = store_val_custom_##ctl_id, \
443 } \
444
445 static struct pvr2_sysfs_func_set funcs[] = {
446         INIT_BATCH(0),
447         INIT_BATCH(1),
448         INIT_BATCH(2),
449         INIT_BATCH(3),
450         INIT_BATCH(4),
451         INIT_BATCH(5),
452         INIT_BATCH(6),
453         INIT_BATCH(7),
454         INIT_BATCH(8),
455         INIT_BATCH(9),
456         INIT_BATCH(10),
457         INIT_BATCH(11),
458         INIT_BATCH(12),
459         INIT_BATCH(13),
460         INIT_BATCH(14),
461         INIT_BATCH(15),
462         INIT_BATCH(16),
463         INIT_BATCH(17),
464         INIT_BATCH(18),
465         INIT_BATCH(19),
466         INIT_BATCH(20),
467         INIT_BATCH(21),
468         INIT_BATCH(22),
469         INIT_BATCH(23),
470         INIT_BATCH(24),
471         INIT_BATCH(25),
472         INIT_BATCH(26),
473         INIT_BATCH(27),
474         INIT_BATCH(28),
475         INIT_BATCH(29),
476         INIT_BATCH(30),
477         INIT_BATCH(31),
478         INIT_BATCH(32),
479         INIT_BATCH(33),
480         INIT_BATCH(34),
481         INIT_BATCH(35),
482         INIT_BATCH(36),
483         INIT_BATCH(37),
484         INIT_BATCH(38),
485         INIT_BATCH(39),
486         INIT_BATCH(40),
487         INIT_BATCH(41),
488         INIT_BATCH(42),
489         INIT_BATCH(43),
490         INIT_BATCH(44),
491         INIT_BATCH(45),
492         INIT_BATCH(46),
493         INIT_BATCH(47),
494         INIT_BATCH(48),
495         INIT_BATCH(49),
496         INIT_BATCH(50),
497         INIT_BATCH(51),
498         INIT_BATCH(52),
499         INIT_BATCH(53),
500         INIT_BATCH(54),
501         INIT_BATCH(55),
502         INIT_BATCH(56),
503         INIT_BATCH(57),
504         INIT_BATCH(58),
505         INIT_BATCH(59),
506 };
507
508
509 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
510 {
511         struct pvr2_sysfs_ctl_item *cip;
512         struct pvr2_sysfs_func_set *fp;
513         struct pvr2_ctrl *cptr;
514         unsigned int cnt,acnt;
515         int ret;
516
517         if ((ctl_id < 0) || (ctl_id >= ARRAY_SIZE(funcs))) {
518                 return;
519         }
520
521         fp = funcs + ctl_id;
522         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
523         if (!cptr) return;
524
525         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
526         if (!cip) return;
527         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
528
529         cip->cptr = cptr;
530
531         cip->chptr = sfp;
532         cip->item_next = NULL;
533         if (sfp->item_last) {
534                 sfp->item_last->item_next = cip;
535         } else {
536                 sfp->item_first = cip;
537         }
538         sfp->item_last = cip;
539
540         cip->attr_name.attr.name = "name";
541         cip->attr_name.attr.mode = S_IRUGO;
542         cip->attr_name.show = fp->show_name;
543
544         cip->attr_type.attr.name = "type";
545         cip->attr_type.attr.mode = S_IRUGO;
546         cip->attr_type.show = fp->show_type;
547
548         cip->attr_min.attr.name = "min_val";
549         cip->attr_min.attr.mode = S_IRUGO;
550         cip->attr_min.show = fp->show_min;
551
552         cip->attr_max.attr.name = "max_val";
553         cip->attr_max.attr.mode = S_IRUGO;
554         cip->attr_max.show = fp->show_max;
555
556         cip->attr_val.attr.name = "cur_val";
557         cip->attr_val.attr.mode = S_IRUGO;
558
559         cip->attr_custom.attr.name = "custom_val";
560         cip->attr_custom.attr.mode = S_IRUGO;
561
562         cip->attr_enum.attr.name = "enum_val";
563         cip->attr_enum.attr.mode = S_IRUGO;
564         cip->attr_enum.show = fp->show_enum;
565
566         cip->attr_bits.attr.name = "bit_val";
567         cip->attr_bits.attr.mode = S_IRUGO;
568         cip->attr_bits.show = fp->show_bits;
569
570         if (pvr2_ctrl_is_writable(cptr)) {
571                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
572                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
573         }
574
575         acnt = 0;
576         cip->attr_gen[acnt++] = &cip->attr_name.attr;
577         cip->attr_gen[acnt++] = &cip->attr_type.attr;
578         cip->attr_gen[acnt++] = &cip->attr_val.attr;
579         cip->attr_val.show = fp->show_val_norm;
580         cip->attr_val.store = fp->store_val_norm;
581         if (pvr2_ctrl_has_custom_symbols(cptr)) {
582                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
583                 cip->attr_custom.show = fp->show_val_custom;
584                 cip->attr_custom.store = fp->store_val_custom;
585         }
586         switch (pvr2_ctrl_get_type(cptr)) {
587         case pvr2_ctl_enum:
588                 // Control is an enumeration
589                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
590                 break;
591         case pvr2_ctl_int:
592                 // Control is an integer
593                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
594                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
595                 break;
596         case pvr2_ctl_bitmask:
597                 // Control is an bitmask
598                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
599                 break;
600         default: break;
601         }
602
603         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
604                         pvr2_ctrl_get_name(cptr));
605         cip->name[cnt] = 0;
606         cip->grp.name = cip->name;
607         cip->grp.attrs = cip->attr_gen;
608
609         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
610         if (ret) {
611                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
612                            "sysfs_create_group error: %d",
613                            ret);
614                 return;
615         }
616         cip->created_ok = !0;
617 }
618
619 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
620 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
621                               char *);
622 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
623                              char *);
624 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
625                               const char *, size_t count);
626
627 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
628 {
629         struct pvr2_sysfs_debugifc *dip;
630         int ret;
631
632         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
633         if (!dip) return;
634         dip->attr_debugcmd.attr.name = "debugcmd";
635         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
636         dip->attr_debugcmd.show = debugcmd_show;
637         dip->attr_debugcmd.store = debugcmd_store;
638         dip->attr_debuginfo.attr.name = "debuginfo";
639         dip->attr_debuginfo.attr.mode = S_IRUGO;
640         dip->attr_debuginfo.show = debuginfo_show;
641         sfp->debugifc = dip;
642         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
643         if (ret < 0) {
644                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
645                            "device_create_file error: %d",
646                            ret);
647         } else {
648                 dip->debugcmd_created_ok = !0;
649         }
650         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
651         if (ret < 0) {
652                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
653                            "device_create_file error: %d",
654                            ret);
655         } else {
656                 dip->debuginfo_created_ok = !0;
657         }
658 }
659
660
661 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
662 {
663         if (!sfp->debugifc) return;
664         if (sfp->debugifc->debuginfo_created_ok) {
665                 device_remove_file(sfp->class_dev,
666                                          &sfp->debugifc->attr_debuginfo);
667         }
668         if (sfp->debugifc->debugcmd_created_ok) {
669                 device_remove_file(sfp->class_dev,
670                                          &sfp->debugifc->attr_debugcmd);
671         }
672         kfree(sfp->debugifc);
673         sfp->debugifc = NULL;
674 }
675 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
676
677
678 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
679 {
680         unsigned int idx,cnt;
681         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
682         for (idx = 0; idx < cnt; idx++) {
683                 pvr2_sysfs_add_control(sfp,idx);
684         }
685 }
686
687
688 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
689 {
690         struct pvr2_sysfs_ctl_item *cip1,*cip2;
691         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
692                 cip2 = cip1->item_next;
693                 if (cip1->created_ok) {
694                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
695                 }
696                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
697                 kfree(cip1);
698         }
699 }
700
701
702 static void pvr2_sysfs_class_release(struct class *class)
703 {
704         struct pvr2_sysfs_class *clp;
705         clp = container_of(class,struct pvr2_sysfs_class,class);
706         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
707         kfree(clp);
708 }
709
710
711 static void pvr2_sysfs_release(struct device *class_dev)
712 {
713         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
714         kfree(class_dev);
715 }
716
717
718 static void class_dev_destroy(struct pvr2_sysfs *sfp)
719 {
720         if (!sfp->class_dev) return;
721 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
722         pvr2_sysfs_tear_down_debugifc(sfp);
723 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
724         pvr2_sysfs_tear_down_controls(sfp);
725         if (sfp->hdw_desc_created_ok) {
726                 device_remove_file(sfp->class_dev,
727                                    &sfp->attr_hdw_desc);
728         }
729         if (sfp->hdw_name_created_ok) {
730                 device_remove_file(sfp->class_dev,
731                                    &sfp->attr_hdw_name);
732         }
733         if (sfp->bus_info_created_ok) {
734                 device_remove_file(sfp->class_dev,
735                                          &sfp->attr_bus_info);
736         }
737         if (sfp->v4l_minor_number_created_ok) {
738                 device_remove_file(sfp->class_dev,
739                                          &sfp->attr_v4l_minor_number);
740         }
741         if (sfp->v4l_radio_minor_number_created_ok) {
742                 device_remove_file(sfp->class_dev,
743                                          &sfp->attr_v4l_radio_minor_number);
744         }
745         if (sfp->unit_number_created_ok) {
746                 device_remove_file(sfp->class_dev,
747                                          &sfp->attr_unit_number);
748         }
749         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
750         sfp->class_dev->driver_data = NULL;
751         device_unregister(sfp->class_dev);
752         sfp->class_dev = NULL;
753 }
754
755
756 static ssize_t v4l_minor_number_show(struct device *class_dev,
757                                      struct device_attribute *attr, char *buf)
758 {
759         struct pvr2_sysfs *sfp;
760         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
761         if (!sfp) return -EINVAL;
762         return scnprintf(buf,PAGE_SIZE,"%d\n",
763                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
764                                                        pvr2_v4l_type_video));
765 }
766
767
768 static ssize_t bus_info_show(struct device *class_dev,
769                              struct device_attribute *attr, char *buf)
770 {
771         struct pvr2_sysfs *sfp;
772         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
773         if (!sfp) return -EINVAL;
774         return scnprintf(buf,PAGE_SIZE,"%s\n",
775                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
776 }
777
778
779 static ssize_t hdw_name_show(struct device *class_dev,
780                              struct device_attribute *attr, char *buf)
781 {
782         struct pvr2_sysfs *sfp;
783         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
784         if (!sfp) return -EINVAL;
785         return scnprintf(buf,PAGE_SIZE,"%s\n",
786                          pvr2_hdw_get_type(sfp->channel.hdw));
787 }
788
789
790 static ssize_t hdw_desc_show(struct device *class_dev,
791                              struct device_attribute *attr, char *buf)
792 {
793         struct pvr2_sysfs *sfp;
794         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
795         if (!sfp) return -EINVAL;
796         return scnprintf(buf,PAGE_SIZE,"%s\n",
797                          pvr2_hdw_get_desc(sfp->channel.hdw));
798 }
799
800
801 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
802                                            struct device_attribute *attr,
803                                            char *buf)
804 {
805         struct pvr2_sysfs *sfp;
806         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
807         if (!sfp) return -EINVAL;
808         return scnprintf(buf,PAGE_SIZE,"%d\n",
809                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
810                                                        pvr2_v4l_type_radio));
811 }
812
813
814 static ssize_t unit_number_show(struct device *class_dev,
815                                 struct device_attribute *attr, char *buf)
816 {
817         struct pvr2_sysfs *sfp;
818         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
819         if (!sfp) return -EINVAL;
820         return scnprintf(buf,PAGE_SIZE,"%d\n",
821                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
822 }
823
824
825 static void class_dev_create(struct pvr2_sysfs *sfp,
826                              struct pvr2_sysfs_class *class_ptr)
827 {
828         struct usb_device *usb_dev;
829         struct device *class_dev;
830         int ret;
831
832         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
833         if (!usb_dev) return;
834         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
835         if (!class_dev) return;
836
837         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
838
839         class_dev->class = &class_ptr->class;
840         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
841                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "sn-%lu",
842                          pvr2_hdw_get_sn(sfp->channel.hdw));
843         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
844                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "unit-%c",
845                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
846         } else {
847                 kfree(class_dev);
848                 return;
849         }
850
851         class_dev->parent = &usb_dev->dev;
852
853         sfp->class_dev = class_dev;
854         class_dev->driver_data = sfp;
855         ret = device_register(class_dev);
856         if (ret) {
857                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
858                            "device_register failed");
859                 kfree(class_dev);
860                 return;
861         }
862
863         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
864         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
865         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
866         sfp->attr_v4l_minor_number.store = NULL;
867         ret = device_create_file(sfp->class_dev,
868                                        &sfp->attr_v4l_minor_number);
869         if (ret < 0) {
870                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
871                            "device_create_file error: %d",
872                            ret);
873         } else {
874                 sfp->v4l_minor_number_created_ok = !0;
875         }
876
877         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
878         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
879         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
880         sfp->attr_v4l_radio_minor_number.store = NULL;
881         ret = device_create_file(sfp->class_dev,
882                                        &sfp->attr_v4l_radio_minor_number);
883         if (ret < 0) {
884                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
885                            "device_create_file error: %d",
886                            ret);
887         } else {
888                 sfp->v4l_radio_minor_number_created_ok = !0;
889         }
890
891         sfp->attr_unit_number.attr.name = "unit_number";
892         sfp->attr_unit_number.attr.mode = S_IRUGO;
893         sfp->attr_unit_number.show = unit_number_show;
894         sfp->attr_unit_number.store = NULL;
895         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
896         if (ret < 0) {
897                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
898                            "device_create_file error: %d",
899                            ret);
900         } else {
901                 sfp->unit_number_created_ok = !0;
902         }
903
904         sfp->attr_bus_info.attr.name = "bus_info_str";
905         sfp->attr_bus_info.attr.mode = S_IRUGO;
906         sfp->attr_bus_info.show = bus_info_show;
907         sfp->attr_bus_info.store = NULL;
908         ret = device_create_file(sfp->class_dev,
909                                        &sfp->attr_bus_info);
910         if (ret < 0) {
911                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
912                            "device_create_file error: %d",
913                            ret);
914         } else {
915                 sfp->bus_info_created_ok = !0;
916         }
917
918         sfp->attr_hdw_name.attr.name = "device_hardware_type";
919         sfp->attr_hdw_name.attr.mode = S_IRUGO;
920         sfp->attr_hdw_name.show = hdw_name_show;
921         sfp->attr_hdw_name.store = NULL;
922         ret = device_create_file(sfp->class_dev,
923                                  &sfp->attr_hdw_name);
924         if (ret < 0) {
925                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
926                            "device_create_file error: %d",
927                            ret);
928         } else {
929                 sfp->hdw_name_created_ok = !0;
930         }
931
932         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
933         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
934         sfp->attr_hdw_desc.show = hdw_desc_show;
935         sfp->attr_hdw_desc.store = NULL;
936         ret = device_create_file(sfp->class_dev,
937                                  &sfp->attr_hdw_desc);
938         if (ret < 0) {
939                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
940                            "device_create_file error: %d",
941                            ret);
942         } else {
943                 sfp->hdw_desc_created_ok = !0;
944         }
945
946         pvr2_sysfs_add_controls(sfp);
947 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
948         pvr2_sysfs_add_debugifc(sfp);
949 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
950 }
951
952
953 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
954 {
955         struct pvr2_sysfs *sfp;
956         sfp = container_of(chp,struct pvr2_sysfs,channel);
957         if (!sfp->channel.mc_head->disconnect_flag) return;
958         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
959         class_dev_destroy(sfp);
960         pvr2_channel_done(&sfp->channel);
961         kfree(sfp);
962 }
963
964
965 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
966                                      struct pvr2_sysfs_class *class_ptr)
967 {
968         struct pvr2_sysfs *sfp;
969         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
970         if (!sfp) return sfp;
971         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
972         pvr2_channel_init(&sfp->channel,mp);
973         sfp->channel.check_func = pvr2_sysfs_internal_check;
974
975         class_dev_create(sfp,class_ptr);
976         return sfp;
977 }
978
979
980
981 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
982 {
983         struct pvr2_sysfs_class *clp;
984         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
985         if (!clp) return clp;
986         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
987         clp->class.name = "pvrusb2";
988         clp->class.class_release = pvr2_sysfs_class_release;
989         clp->class.dev_release = pvr2_sysfs_release;
990         if (class_register(&clp->class)) {
991                 pvr2_sysfs_trace(
992                         "Registration failed for pvr2_sysfs_class id=%p",clp);
993                 kfree(clp);
994                 clp = NULL;
995         }
996         return clp;
997 }
998
999
1000 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
1001 {
1002         class_unregister(&clp->class);
1003 }
1004
1005
1006 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
1007 static ssize_t debuginfo_show(struct device *class_dev,
1008                               struct device_attribute *attr, char *buf)
1009 {
1010         struct pvr2_sysfs *sfp;
1011         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
1012         if (!sfp) return -EINVAL;
1013         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
1014         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
1015 }
1016
1017
1018 static ssize_t debugcmd_show(struct device *class_dev,
1019                              struct device_attribute *attr, char *buf)
1020 {
1021         struct pvr2_sysfs *sfp;
1022         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
1023         if (!sfp) return -EINVAL;
1024         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
1025 }
1026
1027
1028 static ssize_t debugcmd_store(struct device *class_dev,
1029                               struct device_attribute *attr,
1030                               const char *buf, size_t count)
1031 {
1032         struct pvr2_sysfs *sfp;
1033         int ret;
1034
1035         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
1036         if (!sfp) return -EINVAL;
1037
1038         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
1039         if (ret < 0) return ret;
1040         return count;
1041 }
1042 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
1043
1044
1045 /*
1046   Stuff for Emacs to see, in order to encourage consistent editing style:
1047   *** Local Variables: ***
1048   *** mode: c ***
1049   *** fill-column: 75 ***
1050   *** tab-width: 8 ***
1051   *** c-basic-offset: 8 ***
1052   *** End: ***
1053   */