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