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