drivers/media/video/pvrusb2/pvrusb2-sysfs.c

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