Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6] / 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         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_def);
157         ret = pvr2_ctrl_get_def(cip->cptr, &val);
158         pvr2_sysfs_trace("pvr2_sysfs(%p) show_def(cid=%d) is %d, stat=%d",
159                          cip->chptr, cip->ctl_id, val, ret);
160         if (ret < 0) {
161                 return ret;
162         }
163         return scnprintf(buf, PAGE_SIZE, "%d\n", val);
164 }
165
166 static ssize_t show_val_norm(struct device *class_dev,
167                              struct device_attribute *attr,
168                              char *buf)
169 {
170         struct pvr2_sysfs_ctl_item *cip;
171         int val;
172         int ret;
173         unsigned int cnt = 0;
174         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
175         ret = pvr2_ctrl_get_value(cip->cptr, &val);
176         if (ret < 0) return ret;
177         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
178                                      buf, PAGE_SIZE - 1, &cnt);
179         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
180                          cip->chptr, cip->ctl_id, cnt, buf, val);
181         buf[cnt] = '\n';
182         return cnt+1;
183 }
184
185 static ssize_t show_val_custom(struct device *class_dev,
186                                struct device_attribute *attr,
187                                char *buf)
188 {
189         struct pvr2_sysfs_ctl_item *cip;
190         int val;
191         int ret;
192         unsigned int cnt = 0;
193         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
194         ret = pvr2_ctrl_get_value(cip->cptr, &val);
195         if (ret < 0) return ret;
196         ret = pvr2_ctrl_custom_value_to_sym(cip->cptr, ~0, val,
197                                             buf, PAGE_SIZE - 1, &cnt);
198         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
199                          cip->chptr, cip->ctl_id, cnt, buf, val);
200         buf[cnt] = '\n';
201         return cnt+1;
202 }
203
204 static ssize_t show_enum(struct device *class_dev,
205                          struct device_attribute *attr,
206                          char *buf)
207 {
208         struct pvr2_sysfs_ctl_item *cip;
209         long val;
210         unsigned int bcnt, ccnt, ecnt;
211         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_enum);
212         ecnt = pvr2_ctrl_get_cnt(cip->cptr);
213         bcnt = 0;
214         for (val = 0; val < ecnt; val++) {
215                 pvr2_ctrl_get_valname(cip->cptr, val, buf + bcnt,
216                                       PAGE_SIZE - bcnt, &ccnt);
217                 if (!ccnt) continue;
218                 bcnt += ccnt;
219                 if (bcnt >= PAGE_SIZE) break;
220                 buf[bcnt] = '\n';
221                 bcnt++;
222         }
223         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",
224                          cip->chptr, cip->ctl_id);
225         return bcnt;
226 }
227
228 static ssize_t show_bits(struct device *class_dev,
229                          struct device_attribute *attr,
230                          char *buf)
231 {
232         struct pvr2_sysfs_ctl_item *cip;
233         int valid_bits, msk;
234         unsigned int bcnt, ccnt;
235         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_bits);
236         valid_bits = pvr2_ctrl_get_mask(cip->cptr);
237         bcnt = 0;
238         for (msk = 1; valid_bits; msk <<= 1) {
239                 if (!(msk & valid_bits)) continue;
240                 valid_bits &= ~msk;
241                 pvr2_ctrl_get_valname(cip->cptr, msk, buf + bcnt,
242                                       PAGE_SIZE - bcnt, &ccnt);
243                 bcnt += ccnt;
244                 if (bcnt >= PAGE_SIZE) break;
245                 buf[bcnt] = '\n';
246                 bcnt++;
247         }
248         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",
249                          cip->chptr, cip->ctl_id);
250         return bcnt;
251 }
252
253 static int store_val_any(struct pvr2_sysfs_ctl_item *cip, int customfl,
254                          const char *buf,unsigned int count)
255 {
256         int ret;
257         int mask,val;
258         if (customfl) {
259                 ret = pvr2_ctrl_custom_sym_to_value(cip->cptr, buf, count,
260                                                     &mask, &val);
261         } else {
262                 ret = pvr2_ctrl_sym_to_value(cip->cptr, buf, count,
263                                              &mask, &val);
264         }
265         if (ret < 0) return ret;
266         ret = pvr2_ctrl_set_mask_value(cip->cptr, mask, val);
267         pvr2_hdw_commit_ctl(cip->chptr->channel.hdw);
268         return ret;
269 }
270
271 static ssize_t store_val_norm(struct device *class_dev,
272                               struct device_attribute *attr,
273                               const char *buf, size_t count)
274 {
275         struct pvr2_sysfs_ctl_item *cip;
276         int ret;
277         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
278         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
279                          cip->chptr, cip->ctl_id, (int)count, buf);
280         ret = store_val_any(cip, 0, buf, count);
281         if (!ret) ret = count;
282         return ret;
283 }
284
285 static ssize_t store_val_custom(struct device *class_dev,
286                                 struct device_attribute *attr,
287                                 const char *buf, size_t count)
288 {
289         struct pvr2_sysfs_ctl_item *cip;
290         int ret;
291         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
292         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
293                          cip->chptr, cip->ctl_id, (int)count, buf);
294         ret = store_val_any(cip, 1, buf, count);
295         if (!ret) ret = count;
296         return ret;
297 }
298
299 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
300 {
301         struct pvr2_sysfs_ctl_item *cip;
302         struct pvr2_ctrl *cptr;
303         unsigned int cnt,acnt;
304         int ret;
305
306         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
307         if (!cptr) return;
308
309         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
310         if (!cip) return;
311         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
312
313         cip->cptr = cptr;
314         cip->ctl_id = ctl_id;
315
316         cip->chptr = sfp;
317         cip->item_next = NULL;
318         if (sfp->item_last) {
319                 sfp->item_last->item_next = cip;
320         } else {
321                 sfp->item_first = cip;
322         }
323         sfp->item_last = cip;
324
325         cip->attr_name.attr.name = "name";
326         cip->attr_name.attr.mode = S_IRUGO;
327         cip->attr_name.show = show_name;
328
329         cip->attr_type.attr.name = "type";
330         cip->attr_type.attr.mode = S_IRUGO;
331         cip->attr_type.show = show_type;
332
333         cip->attr_min.attr.name = "min_val";
334         cip->attr_min.attr.mode = S_IRUGO;
335         cip->attr_min.show = show_min;
336
337         cip->attr_max.attr.name = "max_val";
338         cip->attr_max.attr.mode = S_IRUGO;
339         cip->attr_max.show = show_max;
340
341         cip->attr_def.attr.name = "def_val";
342         cip->attr_def.attr.mode = S_IRUGO;
343         cip->attr_def.show = show_def;
344
345         cip->attr_val.attr.name = "cur_val";
346         cip->attr_val.attr.mode = S_IRUGO;
347
348         cip->attr_custom.attr.name = "custom_val";
349         cip->attr_custom.attr.mode = S_IRUGO;
350
351         cip->attr_enum.attr.name = "enum_val";
352         cip->attr_enum.attr.mode = S_IRUGO;
353         cip->attr_enum.show = show_enum;
354
355         cip->attr_bits.attr.name = "bit_val";
356         cip->attr_bits.attr.mode = S_IRUGO;
357         cip->attr_bits.show = show_bits;
358
359         if (pvr2_ctrl_is_writable(cptr)) {
360                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
361                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
362         }
363
364         acnt = 0;
365         cip->attr_gen[acnt++] = &cip->attr_name.attr;
366         cip->attr_gen[acnt++] = &cip->attr_type.attr;
367         cip->attr_gen[acnt++] = &cip->attr_val.attr;
368         cip->attr_gen[acnt++] = &cip->attr_def.attr;
369         cip->attr_val.show = show_val_norm;
370         cip->attr_val.store = store_val_norm;
371         if (pvr2_ctrl_has_custom_symbols(cptr)) {
372                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
373                 cip->attr_custom.show = show_val_custom;
374                 cip->attr_custom.store = store_val_custom;
375         }
376         switch (pvr2_ctrl_get_type(cptr)) {
377         case pvr2_ctl_enum:
378                 // Control is an enumeration
379                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
380                 break;
381         case pvr2_ctl_int:
382                 // Control is an integer
383                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
384                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
385                 break;
386         case pvr2_ctl_bitmask:
387                 // Control is an bitmask
388                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
389                 break;
390         default: break;
391         }
392
393         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
394                         pvr2_ctrl_get_name(cptr));
395         cip->name[cnt] = 0;
396         cip->grp.name = cip->name;
397         cip->grp.attrs = cip->attr_gen;
398
399         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
400         if (ret) {
401                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
402                            "sysfs_create_group error: %d",
403                            ret);
404                 return;
405         }
406         cip->created_ok = !0;
407 }
408
409 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
410 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
411                               char *);
412 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
413                              char *);
414 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
415                               const char *, size_t count);
416
417 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
418 {
419         struct pvr2_sysfs_debugifc *dip;
420         int ret;
421
422         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
423         if (!dip) return;
424         dip->attr_debugcmd.attr.name = "debugcmd";
425         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
426         dip->attr_debugcmd.show = debugcmd_show;
427         dip->attr_debugcmd.store = debugcmd_store;
428         dip->attr_debuginfo.attr.name = "debuginfo";
429         dip->attr_debuginfo.attr.mode = S_IRUGO;
430         dip->attr_debuginfo.show = debuginfo_show;
431         sfp->debugifc = dip;
432         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
433         if (ret < 0) {
434                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
435                            "device_create_file error: %d",
436                            ret);
437         } else {
438                 dip->debugcmd_created_ok = !0;
439         }
440         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
441         if (ret < 0) {
442                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
443                            "device_create_file error: %d",
444                            ret);
445         } else {
446                 dip->debuginfo_created_ok = !0;
447         }
448 }
449
450
451 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
452 {
453         if (!sfp->debugifc) return;
454         if (sfp->debugifc->debuginfo_created_ok) {
455                 device_remove_file(sfp->class_dev,
456                                          &sfp->debugifc->attr_debuginfo);
457         }
458         if (sfp->debugifc->debugcmd_created_ok) {
459                 device_remove_file(sfp->class_dev,
460                                          &sfp->debugifc->attr_debugcmd);
461         }
462         kfree(sfp->debugifc);
463         sfp->debugifc = NULL;
464 }
465 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
466
467
468 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
469 {
470         unsigned int idx,cnt;
471         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
472         for (idx = 0; idx < cnt; idx++) {
473                 pvr2_sysfs_add_control(sfp,idx);
474         }
475 }
476
477
478 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
479 {
480         struct pvr2_sysfs_ctl_item *cip1,*cip2;
481         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
482                 cip2 = cip1->item_next;
483                 if (cip1->created_ok) {
484                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
485                 }
486                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
487                 kfree(cip1);
488         }
489 }
490
491
492 static void pvr2_sysfs_class_release(struct class *class)
493 {
494         struct pvr2_sysfs_class *clp;
495         clp = container_of(class,struct pvr2_sysfs_class,class);
496         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
497         kfree(clp);
498 }
499
500
501 static void pvr2_sysfs_release(struct device *class_dev)
502 {
503         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
504         kfree(class_dev);
505 }
506
507
508 static void class_dev_destroy(struct pvr2_sysfs *sfp)
509 {
510         if (!sfp->class_dev) return;
511 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
512         pvr2_sysfs_tear_down_debugifc(sfp);
513 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
514         pvr2_sysfs_tear_down_controls(sfp);
515         if (sfp->hdw_desc_created_ok) {
516                 device_remove_file(sfp->class_dev,
517                                    &sfp->attr_hdw_desc);
518         }
519         if (sfp->hdw_name_created_ok) {
520                 device_remove_file(sfp->class_dev,
521                                    &sfp->attr_hdw_name);
522         }
523         if (sfp->bus_info_created_ok) {
524                 device_remove_file(sfp->class_dev,
525                                          &sfp->attr_bus_info);
526         }
527         if (sfp->v4l_minor_number_created_ok) {
528                 device_remove_file(sfp->class_dev,
529                                          &sfp->attr_v4l_minor_number);
530         }
531         if (sfp->v4l_radio_minor_number_created_ok) {
532                 device_remove_file(sfp->class_dev,
533                                          &sfp->attr_v4l_radio_minor_number);
534         }
535         if (sfp->unit_number_created_ok) {
536                 device_remove_file(sfp->class_dev,
537                                          &sfp->attr_unit_number);
538         }
539         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
540         sfp->class_dev->driver_data = NULL;
541         device_unregister(sfp->class_dev);
542         sfp->class_dev = NULL;
543 }
544
545
546 static ssize_t v4l_minor_number_show(struct device *class_dev,
547                                      struct device_attribute *attr, char *buf)
548 {
549         struct pvr2_sysfs *sfp;
550         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
551         if (!sfp) return -EINVAL;
552         return scnprintf(buf,PAGE_SIZE,"%d\n",
553                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
554                                                        pvr2_v4l_type_video));
555 }
556
557
558 static ssize_t bus_info_show(struct device *class_dev,
559                              struct device_attribute *attr, char *buf)
560 {
561         struct pvr2_sysfs *sfp;
562         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
563         if (!sfp) return -EINVAL;
564         return scnprintf(buf,PAGE_SIZE,"%s\n",
565                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
566 }
567
568
569 static ssize_t hdw_name_show(struct device *class_dev,
570                              struct device_attribute *attr, char *buf)
571 {
572         struct pvr2_sysfs *sfp;
573         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
574         if (!sfp) return -EINVAL;
575         return scnprintf(buf,PAGE_SIZE,"%s\n",
576                          pvr2_hdw_get_type(sfp->channel.hdw));
577 }
578
579
580 static ssize_t hdw_desc_show(struct device *class_dev,
581                              struct device_attribute *attr, char *buf)
582 {
583         struct pvr2_sysfs *sfp;
584         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
585         if (!sfp) return -EINVAL;
586         return scnprintf(buf,PAGE_SIZE,"%s\n",
587                          pvr2_hdw_get_desc(sfp->channel.hdw));
588 }
589
590
591 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
592                                            struct device_attribute *attr,
593                                            char *buf)
594 {
595         struct pvr2_sysfs *sfp;
596         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
597         if (!sfp) return -EINVAL;
598         return scnprintf(buf,PAGE_SIZE,"%d\n",
599                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
600                                                        pvr2_v4l_type_radio));
601 }
602
603
604 static ssize_t unit_number_show(struct device *class_dev,
605                                 struct device_attribute *attr, char *buf)
606 {
607         struct pvr2_sysfs *sfp;
608         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
609         if (!sfp) return -EINVAL;
610         return scnprintf(buf,PAGE_SIZE,"%d\n",
611                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
612 }
613
614
615 static void class_dev_create(struct pvr2_sysfs *sfp,
616                              struct pvr2_sysfs_class *class_ptr)
617 {
618         struct usb_device *usb_dev;
619         struct device *class_dev;
620         int ret;
621
622         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
623         if (!usb_dev) return;
624         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
625         if (!class_dev) return;
626
627         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
628
629         class_dev->class = &class_ptr->class;
630         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
631                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "sn-%lu",
632                          pvr2_hdw_get_sn(sfp->channel.hdw));
633         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
634                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "unit-%c",
635                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
636         } else {
637                 kfree(class_dev);
638                 return;
639         }
640
641         class_dev->parent = &usb_dev->dev;
642
643         sfp->class_dev = class_dev;
644         class_dev->driver_data = sfp;
645         ret = device_register(class_dev);
646         if (ret) {
647                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
648                            "device_register failed");
649                 kfree(class_dev);
650                 return;
651         }
652
653         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
654         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
655         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
656         sfp->attr_v4l_minor_number.store = NULL;
657         ret = device_create_file(sfp->class_dev,
658                                        &sfp->attr_v4l_minor_number);
659         if (ret < 0) {
660                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
661                            "device_create_file error: %d",
662                            ret);
663         } else {
664                 sfp->v4l_minor_number_created_ok = !0;
665         }
666
667         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
668         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
669         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
670         sfp->attr_v4l_radio_minor_number.store = NULL;
671         ret = device_create_file(sfp->class_dev,
672                                        &sfp->attr_v4l_radio_minor_number);
673         if (ret < 0) {
674                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
675                            "device_create_file error: %d",
676                            ret);
677         } else {
678                 sfp->v4l_radio_minor_number_created_ok = !0;
679         }
680
681         sfp->attr_unit_number.attr.name = "unit_number";
682         sfp->attr_unit_number.attr.mode = S_IRUGO;
683         sfp->attr_unit_number.show = unit_number_show;
684         sfp->attr_unit_number.store = NULL;
685         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
686         if (ret < 0) {
687                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
688                            "device_create_file error: %d",
689                            ret);
690         } else {
691                 sfp->unit_number_created_ok = !0;
692         }
693
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         sfp->attr_hdw_name.attr.name = "device_hardware_type";
709         sfp->attr_hdw_name.attr.mode = S_IRUGO;
710         sfp->attr_hdw_name.show = hdw_name_show;
711         sfp->attr_hdw_name.store = NULL;
712         ret = device_create_file(sfp->class_dev,
713                                  &sfp->attr_hdw_name);
714         if (ret < 0) {
715                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
716                            "device_create_file error: %d",
717                            ret);
718         } else {
719                 sfp->hdw_name_created_ok = !0;
720         }
721
722         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
723         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
724         sfp->attr_hdw_desc.show = hdw_desc_show;
725         sfp->attr_hdw_desc.store = NULL;
726         ret = device_create_file(sfp->class_dev,
727                                  &sfp->attr_hdw_desc);
728         if (ret < 0) {
729                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
730                            "device_create_file error: %d",
731                            ret);
732         } else {
733                 sfp->hdw_desc_created_ok = !0;
734         }
735
736         pvr2_sysfs_add_controls(sfp);
737 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
738         pvr2_sysfs_add_debugifc(sfp);
739 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
740 }
741
742
743 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
744 {
745         struct pvr2_sysfs *sfp;
746         sfp = container_of(chp,struct pvr2_sysfs,channel);
747         if (!sfp->channel.mc_head->disconnect_flag) return;
748         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
749         class_dev_destroy(sfp);
750         pvr2_channel_done(&sfp->channel);
751         kfree(sfp);
752 }
753
754
755 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
756                                      struct pvr2_sysfs_class *class_ptr)
757 {
758         struct pvr2_sysfs *sfp;
759         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
760         if (!sfp) return sfp;
761         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
762         pvr2_channel_init(&sfp->channel,mp);
763         sfp->channel.check_func = pvr2_sysfs_internal_check;
764
765         class_dev_create(sfp,class_ptr);
766         return sfp;
767 }
768
769
770
771 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
772 {
773         struct pvr2_sysfs_class *clp;
774         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
775         if (!clp) return clp;
776         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
777         clp->class.name = "pvrusb2";
778         clp->class.class_release = pvr2_sysfs_class_release;
779         clp->class.dev_release = pvr2_sysfs_release;
780         if (class_register(&clp->class)) {
781                 pvr2_sysfs_trace(
782                         "Registration failed for pvr2_sysfs_class id=%p",clp);
783                 kfree(clp);
784                 clp = NULL;
785         }
786         return clp;
787 }
788
789
790 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
791 {
792         class_unregister(&clp->class);
793 }
794
795
796 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
797 static ssize_t debuginfo_show(struct device *class_dev,
798                               struct device_attribute *attr, char *buf)
799 {
800         struct pvr2_sysfs *sfp;
801         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
802         if (!sfp) return -EINVAL;
803         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
804         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
805 }
806
807
808 static ssize_t debugcmd_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 pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
815 }
816
817
818 static ssize_t debugcmd_store(struct device *class_dev,
819                               struct device_attribute *attr,
820                               const char *buf, size_t count)
821 {
822         struct pvr2_sysfs *sfp;
823         int ret;
824
825         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
826         if (!sfp) return -EINVAL;
827
828         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
829         if (ret < 0) return ret;
830         return count;
831 }
832 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
833
834
835 /*
836   Stuff for Emacs to see, in order to encourage consistent editing style:
837   *** Local Variables: ***
838   *** mode: c ***
839   *** fill-column: 75 ***
840   *** tab-width: 8 ***
841   *** c-basic-offset: 8 ***
842   *** End: ***
843   */