device_attributes: add sysfs_attr_init() for dynamic attributes
[linux-2.6.git] / drivers / media / video / pvrusb2 / pvrusb2-sysfs.c
1 /*
2  *
3  *
4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License as published by
8  *  the Free Software Foundation; either version 2 of the License
9  *
10  *  This program is distributed in the hope that it will be useful,
11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  *  GNU General Public License for more details.
14  *
15  *  You should have received a copy of the GNU General Public License
16  *  along with this program; if not, write to the Free Software
17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18  *
19  */
20
21 #include <linux/string.h>
22 #include <linux/slab.h>
23 #include "pvrusb2-sysfs.h"
24 #include "pvrusb2-hdw.h"
25 #include "pvrusb2-debug.h"
26 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
27 #include "pvrusb2-debugifc.h"
28 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
29
30 #define pvr2_sysfs_trace(...) pvr2_trace(PVR2_TRACE_SYSFS,__VA_ARGS__)
31
32 struct pvr2_sysfs {
33         struct pvr2_channel channel;
34         struct device *class_dev;
35 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
36         struct pvr2_sysfs_debugifc *debugifc;
37 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
38         struct pvr2_sysfs_ctl_item *item_first;
39         struct pvr2_sysfs_ctl_item *item_last;
40         struct device_attribute attr_v4l_minor_number;
41         struct device_attribute attr_v4l_radio_minor_number;
42         struct device_attribute attr_unit_number;
43         struct device_attribute attr_bus_info;
44         struct device_attribute attr_hdw_name;
45         struct device_attribute attr_hdw_desc;
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         int hdw_name_created_ok;
51         int hdw_desc_created_ok;
52 };
53
54 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
55 struct pvr2_sysfs_debugifc {
56         struct device_attribute attr_debugcmd;
57         struct device_attribute attr_debuginfo;
58         int debugcmd_created_ok;
59         int debuginfo_created_ok;
60 };
61 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
62
63 struct pvr2_sysfs_ctl_item {
64         struct device_attribute attr_name;
65         struct device_attribute attr_type;
66         struct device_attribute attr_min;
67         struct device_attribute attr_max;
68         struct device_attribute attr_def;
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         int ctl_id;
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(struct device *class_dev,
88                          struct device_attribute *attr,
89                          char *buf)
90 {
91         struct pvr2_sysfs_ctl_item *cip;
92         const char *name;
93         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_name);
94         name = pvr2_ctrl_get_desc(cip->cptr);
95         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",
96                          cip->chptr, cip->ctl_id, name);
97         if (!name) return -EINVAL;
98         return scnprintf(buf, PAGE_SIZE, "%s\n", name);
99 }
100
101 static ssize_t show_type(struct device *class_dev,
102                          struct device_attribute *attr,
103                          char *buf)
104 {
105         struct pvr2_sysfs_ctl_item *cip;
106         const char *name;
107         enum pvr2_ctl_type tp;
108         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_type);
109         tp = pvr2_ctrl_get_type(cip->cptr);
110         switch (tp) {
111         case pvr2_ctl_int: name = "integer"; break;
112         case pvr2_ctl_enum: name = "enum"; break;
113         case pvr2_ctl_bitmask: name = "bitmask"; break;
114         case pvr2_ctl_bool: name = "boolean"; break;
115         default: name = "?"; break;
116         }
117         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",
118                          cip->chptr, cip->ctl_id, name);
119         if (!name) return -EINVAL;
120         return scnprintf(buf, PAGE_SIZE, "%s\n", name);
121 }
122
123 static ssize_t show_min(struct device *class_dev,
124                         struct device_attribute *attr,
125                         char *buf)
126 {
127         struct pvr2_sysfs_ctl_item *cip;
128         long val;
129         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_min);
130         val = pvr2_ctrl_get_min(cip->cptr);
131         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",
132                          cip->chptr, cip->ctl_id, val);
133         return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
134 }
135
136 static ssize_t show_max(struct device *class_dev,
137                         struct device_attribute *attr,
138                         char *buf)
139 {
140         struct pvr2_sysfs_ctl_item *cip;
141         long val;
142         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_max);
143         val = pvr2_ctrl_get_max(cip->cptr);
144         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",
145                          cip->chptr, cip->ctl_id, val);
146         return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
147 }
148
149 static ssize_t show_def(struct device *class_dev,
150                         struct device_attribute *attr,
151                         char *buf)
152 {
153         struct pvr2_sysfs_ctl_item *cip;
154         int val;
155         int ret;
156         unsigned int cnt = 0;
157         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_def);
158         ret = pvr2_ctrl_get_def(cip->cptr, &val);
159         if (ret < 0) return ret;
160         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
161                                      buf, PAGE_SIZE - 1, &cnt);
162         pvr2_sysfs_trace("pvr2_sysfs(%p) show_def(cid=%d) is %.*s (%d)",
163                          cip->chptr, cip->ctl_id, cnt, buf, val);
164         buf[cnt] = '\n';
165         return cnt + 1;
166 }
167
168 static ssize_t show_val_norm(struct device *class_dev,
169                              struct device_attribute *attr,
170                              char *buf)
171 {
172         struct pvr2_sysfs_ctl_item *cip;
173         int val;
174         int ret;
175         unsigned int cnt = 0;
176         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
177         ret = pvr2_ctrl_get_value(cip->cptr, &val);
178         if (ret < 0) return ret;
179         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
180                                      buf, PAGE_SIZE - 1, &cnt);
181         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
182                          cip->chptr, cip->ctl_id, cnt, buf, val);
183         buf[cnt] = '\n';
184         return cnt+1;
185 }
186
187 static ssize_t show_val_custom(struct device *class_dev,
188                                struct device_attribute *attr,
189                                char *buf)
190 {
191         struct pvr2_sysfs_ctl_item *cip;
192         int val;
193         int ret;
194         unsigned int cnt = 0;
195         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
196         ret = pvr2_ctrl_get_value(cip->cptr, &val);
197         if (ret < 0) return ret;
198         ret = pvr2_ctrl_custom_value_to_sym(cip->cptr, ~0, val,
199                                             buf, PAGE_SIZE - 1, &cnt);
200         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
201                          cip->chptr, cip->ctl_id, cnt, buf, val);
202         buf[cnt] = '\n';
203         return cnt+1;
204 }
205
206 static ssize_t show_enum(struct device *class_dev,
207                          struct device_attribute *attr,
208                          char *buf)
209 {
210         struct pvr2_sysfs_ctl_item *cip;
211         long val;
212         unsigned int bcnt, ccnt, ecnt;
213         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_enum);
214         ecnt = pvr2_ctrl_get_cnt(cip->cptr);
215         bcnt = 0;
216         for (val = 0; val < ecnt; val++) {
217                 pvr2_ctrl_get_valname(cip->cptr, val, buf + bcnt,
218                                       PAGE_SIZE - bcnt, &ccnt);
219                 if (!ccnt) continue;
220                 bcnt += ccnt;
221                 if (bcnt >= PAGE_SIZE) break;
222                 buf[bcnt] = '\n';
223                 bcnt++;
224         }
225         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",
226                          cip->chptr, cip->ctl_id);
227         return bcnt;
228 }
229
230 static ssize_t show_bits(struct device *class_dev,
231                          struct device_attribute *attr,
232                          char *buf)
233 {
234         struct pvr2_sysfs_ctl_item *cip;
235         int valid_bits, msk;
236         unsigned int bcnt, ccnt;
237         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_bits);
238         valid_bits = pvr2_ctrl_get_mask(cip->cptr);
239         bcnt = 0;
240         for (msk = 1; valid_bits; msk <<= 1) {
241                 if (!(msk & valid_bits)) continue;
242                 valid_bits &= ~msk;
243                 pvr2_ctrl_get_valname(cip->cptr, msk, buf + bcnt,
244                                       PAGE_SIZE - bcnt, &ccnt);
245                 bcnt += ccnt;
246                 if (bcnt >= PAGE_SIZE) break;
247                 buf[bcnt] = '\n';
248                 bcnt++;
249         }
250         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",
251                          cip->chptr, cip->ctl_id);
252         return bcnt;
253 }
254
255 static int store_val_any(struct pvr2_sysfs_ctl_item *cip, int customfl,
256                          const char *buf,unsigned int count)
257 {
258         int ret;
259         int mask,val;
260         if (customfl) {
261                 ret = pvr2_ctrl_custom_sym_to_value(cip->cptr, buf, count,
262                                                     &mask, &val);
263         } else {
264                 ret = pvr2_ctrl_sym_to_value(cip->cptr, buf, count,
265                                              &mask, &val);
266         }
267         if (ret < 0) return ret;
268         ret = pvr2_ctrl_set_mask_value(cip->cptr, mask, val);
269         pvr2_hdw_commit_ctl(cip->chptr->channel.hdw);
270         return ret;
271 }
272
273 static ssize_t store_val_norm(struct device *class_dev,
274                               struct device_attribute *attr,
275                               const char *buf, size_t count)
276 {
277         struct pvr2_sysfs_ctl_item *cip;
278         int ret;
279         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
280         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
281                          cip->chptr, cip->ctl_id, (int)count, buf);
282         ret = store_val_any(cip, 0, buf, count);
283         if (!ret) ret = count;
284         return ret;
285 }
286
287 static ssize_t store_val_custom(struct device *class_dev,
288                                 struct device_attribute *attr,
289                                 const char *buf, size_t count)
290 {
291         struct pvr2_sysfs_ctl_item *cip;
292         int ret;
293         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
294         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
295                          cip->chptr, cip->ctl_id, (int)count, buf);
296         ret = store_val_any(cip, 1, buf, count);
297         if (!ret) ret = count;
298         return ret;
299 }
300
301 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
302 {
303         struct pvr2_sysfs_ctl_item *cip;
304         struct pvr2_ctrl *cptr;
305         unsigned int cnt,acnt;
306         int ret;
307
308         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
309         if (!cptr) return;
310
311         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
312         if (!cip) return;
313         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
314
315         cip->cptr = cptr;
316         cip->ctl_id = ctl_id;
317
318         cip->chptr = sfp;
319         cip->item_next = NULL;
320         if (sfp->item_last) {
321                 sfp->item_last->item_next = cip;
322         } else {
323                 sfp->item_first = cip;
324         }
325         sfp->item_last = cip;
326
327         cip->attr_name.attr.name = "name";
328         cip->attr_name.attr.mode = S_IRUGO;
329         cip->attr_name.show = show_name;
330
331         cip->attr_type.attr.name = "type";
332         cip->attr_type.attr.mode = S_IRUGO;
333         cip->attr_type.show = show_type;
334
335         cip->attr_min.attr.name = "min_val";
336         cip->attr_min.attr.mode = S_IRUGO;
337         cip->attr_min.show = show_min;
338
339         cip->attr_max.attr.name = "max_val";
340         cip->attr_max.attr.mode = S_IRUGO;
341         cip->attr_max.show = show_max;
342
343         cip->attr_def.attr.name = "def_val";
344         cip->attr_def.attr.mode = S_IRUGO;
345         cip->attr_def.show = show_def;
346
347         cip->attr_val.attr.name = "cur_val";
348         cip->attr_val.attr.mode = S_IRUGO;
349
350         cip->attr_custom.attr.name = "custom_val";
351         cip->attr_custom.attr.mode = S_IRUGO;
352
353         cip->attr_enum.attr.name = "enum_val";
354         cip->attr_enum.attr.mode = S_IRUGO;
355         cip->attr_enum.show = show_enum;
356
357         cip->attr_bits.attr.name = "bit_val";
358         cip->attr_bits.attr.mode = S_IRUGO;
359         cip->attr_bits.show = show_bits;
360
361         if (pvr2_ctrl_is_writable(cptr)) {
362                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
363                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
364         }
365
366         acnt = 0;
367         cip->attr_gen[acnt++] = &cip->attr_name.attr;
368         cip->attr_gen[acnt++] = &cip->attr_type.attr;
369         cip->attr_gen[acnt++] = &cip->attr_val.attr;
370         cip->attr_gen[acnt++] = &cip->attr_def.attr;
371         cip->attr_val.show = show_val_norm;
372         cip->attr_val.store = store_val_norm;
373         if (pvr2_ctrl_has_custom_symbols(cptr)) {
374                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
375                 cip->attr_custom.show = show_val_custom;
376                 cip->attr_custom.store = store_val_custom;
377         }
378         switch (pvr2_ctrl_get_type(cptr)) {
379         case pvr2_ctl_enum:
380                 // Control is an enumeration
381                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
382                 break;
383         case pvr2_ctl_int:
384                 // Control is an integer
385                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
386                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
387                 break;
388         case pvr2_ctl_bitmask:
389                 // Control is an bitmask
390                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
391                 break;
392         default: break;
393         }
394
395         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
396                         pvr2_ctrl_get_name(cptr));
397         cip->name[cnt] = 0;
398         cip->grp.name = cip->name;
399         cip->grp.attrs = cip->attr_gen;
400
401         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
402         if (ret) {
403                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
404                            "sysfs_create_group error: %d",
405                            ret);
406                 return;
407         }
408         cip->created_ok = !0;
409 }
410
411 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
412 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
413                               char *);
414 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
415                              char *);
416 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
417                               const char *, size_t count);
418
419 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
420 {
421         struct pvr2_sysfs_debugifc *dip;
422         int ret;
423
424         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
425         if (!dip) return;
426         sysfs_attr_init(&dip->attr_debugcmd.attr);
427         dip->attr_debugcmd.attr.name = "debugcmd";
428         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
429         dip->attr_debugcmd.show = debugcmd_show;
430         dip->attr_debugcmd.store = debugcmd_store;
431         sysfs_attr_init(&dip->attr_debuginfo.attr);
432         dip->attr_debuginfo.attr.name = "debuginfo";
433         dip->attr_debuginfo.attr.mode = S_IRUGO;
434         dip->attr_debuginfo.show = debuginfo_show;
435         sfp->debugifc = dip;
436         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
437         if (ret < 0) {
438                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
439                            "device_create_file error: %d",
440                            ret);
441         } else {
442                 dip->debugcmd_created_ok = !0;
443         }
444         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
445         if (ret < 0) {
446                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
447                            "device_create_file error: %d",
448                            ret);
449         } else {
450                 dip->debuginfo_created_ok = !0;
451         }
452 }
453
454
455 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
456 {
457         if (!sfp->debugifc) return;
458         if (sfp->debugifc->debuginfo_created_ok) {
459                 device_remove_file(sfp->class_dev,
460                                          &sfp->debugifc->attr_debuginfo);
461         }
462         if (sfp->debugifc->debugcmd_created_ok) {
463                 device_remove_file(sfp->class_dev,
464                                          &sfp->debugifc->attr_debugcmd);
465         }
466         kfree(sfp->debugifc);
467         sfp->debugifc = NULL;
468 }
469 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
470
471
472 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
473 {
474         unsigned int idx,cnt;
475         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
476         for (idx = 0; idx < cnt; idx++) {
477                 pvr2_sysfs_add_control(sfp,idx);
478         }
479 }
480
481
482 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
483 {
484         struct pvr2_sysfs_ctl_item *cip1,*cip2;
485         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
486                 cip2 = cip1->item_next;
487                 if (cip1->created_ok) {
488                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
489                 }
490                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
491                 kfree(cip1);
492         }
493 }
494
495
496 static void pvr2_sysfs_class_release(struct class *class)
497 {
498         struct pvr2_sysfs_class *clp;
499         clp = container_of(class,struct pvr2_sysfs_class,class);
500         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
501         kfree(clp);
502 }
503
504
505 static void pvr2_sysfs_release(struct device *class_dev)
506 {
507         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
508         kfree(class_dev);
509 }
510
511
512 static void class_dev_destroy(struct pvr2_sysfs *sfp)
513 {
514         if (!sfp->class_dev) return;
515 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
516         pvr2_sysfs_tear_down_debugifc(sfp);
517 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
518         pvr2_sysfs_tear_down_controls(sfp);
519         if (sfp->hdw_desc_created_ok) {
520                 device_remove_file(sfp->class_dev,
521                                    &sfp->attr_hdw_desc);
522         }
523         if (sfp->hdw_name_created_ok) {
524                 device_remove_file(sfp->class_dev,
525                                    &sfp->attr_hdw_name);
526         }
527         if (sfp->bus_info_created_ok) {
528                 device_remove_file(sfp->class_dev,
529                                          &sfp->attr_bus_info);
530         }
531         if (sfp->v4l_minor_number_created_ok) {
532                 device_remove_file(sfp->class_dev,
533                                          &sfp->attr_v4l_minor_number);
534         }
535         if (sfp->v4l_radio_minor_number_created_ok) {
536                 device_remove_file(sfp->class_dev,
537                                          &sfp->attr_v4l_radio_minor_number);
538         }
539         if (sfp->unit_number_created_ok) {
540                 device_remove_file(sfp->class_dev,
541                                          &sfp->attr_unit_number);
542         }
543         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
544         dev_set_drvdata(sfp->class_dev, NULL);
545         device_unregister(sfp->class_dev);
546         sfp->class_dev = NULL;
547 }
548
549
550 static ssize_t v4l_minor_number_show(struct device *class_dev,
551                                      struct device_attribute *attr, char *buf)
552 {
553         struct pvr2_sysfs *sfp;
554         sfp = dev_get_drvdata(class_dev);
555         if (!sfp) return -EINVAL;
556         return scnprintf(buf,PAGE_SIZE,"%d\n",
557                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
558                                                        pvr2_v4l_type_video));
559 }
560
561
562 static ssize_t bus_info_show(struct device *class_dev,
563                              struct device_attribute *attr, char *buf)
564 {
565         struct pvr2_sysfs *sfp;
566         sfp = dev_get_drvdata(class_dev);
567         if (!sfp) return -EINVAL;
568         return scnprintf(buf,PAGE_SIZE,"%s\n",
569                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
570 }
571
572
573 static ssize_t hdw_name_show(struct device *class_dev,
574                              struct device_attribute *attr, char *buf)
575 {
576         struct pvr2_sysfs *sfp;
577         sfp = dev_get_drvdata(class_dev);
578         if (!sfp) return -EINVAL;
579         return scnprintf(buf,PAGE_SIZE,"%s\n",
580                          pvr2_hdw_get_type(sfp->channel.hdw));
581 }
582
583
584 static ssize_t hdw_desc_show(struct device *class_dev,
585                              struct device_attribute *attr, char *buf)
586 {
587         struct pvr2_sysfs *sfp;
588         sfp = dev_get_drvdata(class_dev);
589         if (!sfp) return -EINVAL;
590         return scnprintf(buf,PAGE_SIZE,"%s\n",
591                          pvr2_hdw_get_desc(sfp->channel.hdw));
592 }
593
594
595 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
596                                            struct device_attribute *attr,
597                                            char *buf)
598 {
599         struct pvr2_sysfs *sfp;
600         sfp = dev_get_drvdata(class_dev);
601         if (!sfp) return -EINVAL;
602         return scnprintf(buf,PAGE_SIZE,"%d\n",
603                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
604                                                        pvr2_v4l_type_radio));
605 }
606
607
608 static ssize_t unit_number_show(struct device *class_dev,
609                                 struct device_attribute *attr, char *buf)
610 {
611         struct pvr2_sysfs *sfp;
612         sfp = dev_get_drvdata(class_dev);
613         if (!sfp) return -EINVAL;
614         return scnprintf(buf,PAGE_SIZE,"%d\n",
615                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
616 }
617
618
619 static void class_dev_create(struct pvr2_sysfs *sfp,
620                              struct pvr2_sysfs_class *class_ptr)
621 {
622         struct usb_device *usb_dev;
623         struct device *class_dev;
624         int ret;
625
626         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
627         if (!usb_dev) return;
628         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
629         if (!class_dev) return;
630
631         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
632
633         class_dev->class = &class_ptr->class;
634         dev_set_name(class_dev, "%s",
635                      pvr2_hdw_get_device_identifier(sfp->channel.hdw));
636
637         class_dev->parent = &usb_dev->dev;
638
639         sfp->class_dev = class_dev;
640         dev_set_drvdata(class_dev, sfp);
641         ret = device_register(class_dev);
642         if (ret) {
643                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
644                            "device_register failed");
645                 kfree(class_dev);
646                 return;
647         }
648
649         sysfs_attr_init(&sfp->attr_v4l_minor_number.attr);
650         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
651         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
652         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
653         sfp->attr_v4l_minor_number.store = NULL;
654         ret = device_create_file(sfp->class_dev,
655                                        &sfp->attr_v4l_minor_number);
656         if (ret < 0) {
657                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
658                            "device_create_file error: %d",
659                            ret);
660         } else {
661                 sfp->v4l_minor_number_created_ok = !0;
662         }
663
664         sysfs_attr_init(&sfp->attr_v4l_radio_minor_number.attr);
665         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
666         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
667         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
668         sfp->attr_v4l_radio_minor_number.store = NULL;
669         ret = device_create_file(sfp->class_dev,
670                                        &sfp->attr_v4l_radio_minor_number);
671         if (ret < 0) {
672                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
673                            "device_create_file error: %d",
674                            ret);
675         } else {
676                 sfp->v4l_radio_minor_number_created_ok = !0;
677         }
678
679         sysfs_attr_init(&sfp->attr_unit_number.attr);
680         sfp->attr_unit_number.attr.name = "unit_number";
681         sfp->attr_unit_number.attr.mode = S_IRUGO;
682         sfp->attr_unit_number.show = unit_number_show;
683         sfp->attr_unit_number.store = NULL;
684         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
685         if (ret < 0) {
686                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
687                            "device_create_file error: %d",
688                            ret);
689         } else {
690                 sfp->unit_number_created_ok = !0;
691         }
692
693         sysfs_attr_init(&sfp->attr_bus_info.attr);
694         sfp->attr_bus_info.attr.name = "bus_info_str";
695         sfp->attr_bus_info.attr.mode = S_IRUGO;
696         sfp->attr_bus_info.show = bus_info_show;
697         sfp->attr_bus_info.store = NULL;
698         ret = device_create_file(sfp->class_dev,
699                                        &sfp->attr_bus_info);
700         if (ret < 0) {
701                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
702                            "device_create_file error: %d",
703                            ret);
704         } else {
705                 sfp->bus_info_created_ok = !0;
706         }
707
708         sysfs_attr_init(&sfp->attr_hdw_name.attr);
709         sfp->attr_hdw_name.attr.name = "device_hardware_type";
710         sfp->attr_hdw_name.attr.mode = S_IRUGO;
711         sfp->attr_hdw_name.show = hdw_name_show;
712         sfp->attr_hdw_name.store = NULL;
713         ret = device_create_file(sfp->class_dev,
714                                  &sfp->attr_hdw_name);
715         if (ret < 0) {
716                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
717                            "device_create_file error: %d",
718                            ret);
719         } else {
720                 sfp->hdw_name_created_ok = !0;
721         }
722
723         sysfs_attr_init(&sfp->attr_hdw_desc.attr);
724         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
725         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
726         sfp->attr_hdw_desc.show = hdw_desc_show;
727         sfp->attr_hdw_desc.store = NULL;
728         ret = device_create_file(sfp->class_dev,
729                                  &sfp->attr_hdw_desc);
730         if (ret < 0) {
731                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
732                            "device_create_file error: %d",
733                            ret);
734         } else {
735                 sfp->hdw_desc_created_ok = !0;
736         }
737
738         pvr2_sysfs_add_controls(sfp);
739 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
740         pvr2_sysfs_add_debugifc(sfp);
741 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
742 }
743
744
745 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
746 {
747         struct pvr2_sysfs *sfp;
748         sfp = container_of(chp,struct pvr2_sysfs,channel);
749         if (!sfp->channel.mc_head->disconnect_flag) return;
750         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
751         class_dev_destroy(sfp);
752         pvr2_channel_done(&sfp->channel);
753         kfree(sfp);
754 }
755
756
757 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
758                                      struct pvr2_sysfs_class *class_ptr)
759 {
760         struct pvr2_sysfs *sfp;
761         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
762         if (!sfp) return sfp;
763         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
764         pvr2_channel_init(&sfp->channel,mp);
765         sfp->channel.check_func = pvr2_sysfs_internal_check;
766
767         class_dev_create(sfp,class_ptr);
768         return sfp;
769 }
770
771
772
773 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
774 {
775         struct pvr2_sysfs_class *clp;
776         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
777         if (!clp) return clp;
778         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
779         clp->class.name = "pvrusb2";
780         clp->class.class_release = pvr2_sysfs_class_release;
781         clp->class.dev_release = pvr2_sysfs_release;
782         if (class_register(&clp->class)) {
783                 pvr2_sysfs_trace(
784                         "Registration failed for pvr2_sysfs_class id=%p",clp);
785                 kfree(clp);
786                 clp = NULL;
787         }
788         return clp;
789 }
790
791
792 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
793 {
794         class_unregister(&clp->class);
795 }
796
797
798 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
799 static ssize_t debuginfo_show(struct device *class_dev,
800                               struct device_attribute *attr, char *buf)
801 {
802         struct pvr2_sysfs *sfp;
803         sfp = dev_get_drvdata(class_dev);
804         if (!sfp) return -EINVAL;
805         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
806         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
807 }
808
809
810 static ssize_t debugcmd_show(struct device *class_dev,
811                              struct device_attribute *attr, char *buf)
812 {
813         struct pvr2_sysfs *sfp;
814         sfp = dev_get_drvdata(class_dev);
815         if (!sfp) return -EINVAL;
816         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
817 }
818
819
820 static ssize_t debugcmd_store(struct device *class_dev,
821                               struct device_attribute *attr,
822                               const char *buf, size_t count)
823 {
824         struct pvr2_sysfs *sfp;
825         int ret;
826
827         sfp = dev_get_drvdata(class_dev);
828         if (!sfp) return -EINVAL;
829
830         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
831         if (ret < 0) return ret;
832         return count;
833 }
834 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
835
836
837 /*
838   Stuff for Emacs to see, in order to encourage consistent editing style:
839   *** Local Variables: ***
840   *** mode: c ***
841   *** fill-column: 75 ***
842   *** tab-width: 8 ***
843   *** c-basic-offset: 8 ***
844   *** End: ***
845   */