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         int v4l_minor_number_created_ok;
  48         int unit_number_created_ok;
  49 };
  50
  51 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  52 struct pvr2_sysfs_debugifc {
  53         struct class_device_attribute attr_debugcmd;
  54         struct class_device_attribute attr_debuginfo;
  55         int debugcmd_created_ok;
  56         int debuginfo_created_ok;
  57 };
  58 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  59
  60 struct pvr2_sysfs_ctl_item {
  61         struct class_device_attribute attr_name;
  62         struct class_device_attribute attr_type;
  63         struct class_device_attribute attr_min;
  64         struct class_device_attribute attr_max;
  65         struct class_device_attribute attr_enum;
  66         struct class_device_attribute attr_bits;
  67         struct class_device_attribute attr_val;
  68         struct class_device_attribute attr_custom;
  69         struct pvr2_ctrl *cptr;
  70         struct pvr2_sysfs *chptr;
  71         struct pvr2_sysfs_ctl_item *item_next;
  72         struct attribute *attr_gen[7];
  73         struct attribute_group grp;
  74         int created_ok;
  75         char name[80];
  76 };
  77
  78 struct pvr2_sysfs_class {
  79         struct class class;
  80 };
  81
  82 static ssize_t show_name(int id,struct class_device *class_dev,char *buf)
  83 {
  84         struct pvr2_ctrl *cptr;
  85         struct pvr2_sysfs *sfp;
  86         const char *name;
  87
  88         sfp = (struct pvr2_sysfs *)class_dev->class_data;
  89         if (!sfp) return -EINVAL;
  90         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
  91         if (!cptr) return -EINVAL;
  92
  93         name = pvr2_ctrl_get_desc(cptr);
  94         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",sfp,id,name);
  95
  96         if (!name) return -EINVAL;
  97
  98         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
  99 }
 100
 101 static ssize_t show_type(int id,struct class_device *class_dev,char *buf)
 102 {
 103         struct pvr2_ctrl *cptr;
 104         struct pvr2_sysfs *sfp;
 105         const char *name;
 106         enum pvr2_ctl_type tp;
 107
 108         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 109         if (!sfp) return -EINVAL;
 110         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 111         if (!cptr) return -EINVAL;
 112
 113         tp = pvr2_ctrl_get_type(cptr);
 114         switch (tp) {
 115         case pvr2_ctl_int: name = "integer"; break;
 116         case pvr2_ctl_enum: name = "enum"; break;
 117         case pvr2_ctl_bitmask: name = "bitmask"; break;
 118         case pvr2_ctl_bool: name = "boolean"; break;
 119         default: name = "?"; break;
 120         }
 121         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",sfp,id,name);
 122
 123         if (!name) return -EINVAL;
 124
 125         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
 126 }
 127
 128 static ssize_t show_min(int id,struct class_device *class_dev,char *buf)
 129 {
 130         struct pvr2_ctrl *cptr;
 131         struct pvr2_sysfs *sfp;
 132         long val;
 133
 134         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 135         if (!sfp) return -EINVAL;
 136         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 137         if (!cptr) return -EINVAL;
 138         val = pvr2_ctrl_get_min(cptr);
 139
 140         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",sfp,id,val);
 141
 142         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 143 }
 144
 145 static ssize_t show_max(int id,struct class_device *class_dev,char *buf)
 146 {
 147         struct pvr2_ctrl *cptr;
 148         struct pvr2_sysfs *sfp;
 149         long val;
 150
 151         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 152         if (!sfp) return -EINVAL;
 153         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 154         if (!cptr) return -EINVAL;
 155         val = pvr2_ctrl_get_max(cptr);
 156
 157         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",sfp,id,val);
 158
 159         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 160 }
 161
 162 static ssize_t show_val_norm(int id,struct class_device *class_dev,char *buf)
 163 {
 164         struct pvr2_ctrl *cptr;
 165         struct pvr2_sysfs *sfp;
 166         int val,ret;
 167         unsigned int cnt = 0;
 168
 169         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 170         if (!sfp) return -EINVAL;
 171         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 172         if (!cptr) return -EINVAL;
 173
 174         ret = pvr2_ctrl_get_value(cptr,&val);
 175         if (ret < 0) return ret;
 176
 177         ret = pvr2_ctrl_value_to_sym(cptr,~0,val,
 178                                      buf,PAGE_SIZE-1,&cnt);
 179
 180         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
 181                          sfp,id,cnt,buf,val);
 182         buf[cnt] = '\n';
 183         return cnt+1;
 184 }
 185
 186 static ssize_t show_val_custom(int id,struct class_device *class_dev,char *buf)
 187 {
 188         struct pvr2_ctrl *cptr;
 189         struct pvr2_sysfs *sfp;
 190         int val,ret;
 191         unsigned int cnt = 0;
 192
 193         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 194         if (!sfp) return -EINVAL;
 195         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 196         if (!cptr) return -EINVAL;
 197
 198         ret = pvr2_ctrl_get_value(cptr,&val);
 199         if (ret < 0) return ret;
 200
 201         ret = pvr2_ctrl_custom_value_to_sym(cptr,~0,val,
 202                                             buf,PAGE_SIZE-1,&cnt);
 203
 204         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
 205                          sfp,id,cnt,buf,val);
 206         buf[cnt] = '\n';
 207         return cnt+1;
 208 }
 209
 210 static ssize_t show_enum(int id,struct class_device *class_dev,char *buf)
 211 {
 212         struct pvr2_ctrl *cptr;
 213         struct pvr2_sysfs *sfp;
 214         long val;
 215         unsigned int bcnt,ccnt,ecnt;
 216
 217         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 218         if (!sfp) return -EINVAL;
 219         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 220         if (!cptr) return -EINVAL;
 221         ecnt = pvr2_ctrl_get_cnt(cptr);
 222         bcnt = 0;
 223         for (val = 0; val < ecnt; val++) {
 224                 pvr2_ctrl_get_valname(cptr,val,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 225                 if (!ccnt) continue;
 226                 bcnt += ccnt;
 227                 if (bcnt >= PAGE_SIZE) break;
 228                 buf[bcnt] = '\n';
 229                 bcnt++;
 230         }
 231         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",sfp,id);
 232         return bcnt;
 233 }
 234
 235 static ssize_t show_bits(int id,struct class_device *class_dev,char *buf)
 236 {
 237         struct pvr2_ctrl *cptr;
 238         struct pvr2_sysfs *sfp;
 239         int valid_bits,msk;
 240         unsigned int bcnt,ccnt;
 241
 242         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 243         if (!sfp) return -EINVAL;
 244         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 245         if (!cptr) return -EINVAL;
 246         valid_bits = pvr2_ctrl_get_mask(cptr);
 247         bcnt = 0;
 248         for (msk = 1; valid_bits; msk <<= 1) {
 249                 if (!(msk & valid_bits)) continue;
 250                 valid_bits &= ~msk;
 251                 pvr2_ctrl_get_valname(cptr,msk,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 252                 bcnt += ccnt;
 253                 if (bcnt >= PAGE_SIZE) break;
 254                 buf[bcnt] = '\n';
 255                 bcnt++;
 256         }
 257         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",sfp,id);
 258         return bcnt;
 259 }
 260
 261 static int store_val_any(int id,int customfl,struct pvr2_sysfs *sfp,
 262                          const char *buf,unsigned int count)
 263 {
 264         struct pvr2_ctrl *cptr;
 265         int ret;
 266         int mask,val;
 267
 268         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 269         if (customfl) {
 270                 ret = pvr2_ctrl_custom_sym_to_value(cptr,buf,count,&mask,&val);
 271         } else {
 272                 ret = pvr2_ctrl_sym_to_value(cptr,buf,count,&mask,&val);
 273         }
 274         if (ret < 0) return ret;
 275         ret = pvr2_ctrl_set_mask_value(cptr,mask,val);
 276         pvr2_hdw_commit_ctl(sfp->channel.hdw);
 277         return ret;
 278 }
 279
 280 static ssize_t store_val_norm(int id,struct class_device *class_dev,
 281                              const char *buf,size_t count)
 282 {
 283         struct pvr2_sysfs *sfp;
 284         int ret;
 285         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 286         ret = store_val_any(id,0,sfp,buf,count);
 287         if (!ret) ret = count;
 288         return ret;
 289 }
 290
 291 static ssize_t store_val_custom(int id,struct class_device *class_dev,
 292                                 const char *buf,size_t count)
 293 {
 294         struct pvr2_sysfs *sfp;
 295         int ret;
 296         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 297         ret = store_val_any(id,1,sfp,buf,count);
 298         if (!ret) ret = count;
 299         return ret;
 300 }
 301
 302 /*
 303   Mike Isely <isely@pobox.com> 30-April-2005
 304
 305   This next batch of horrible preprocessor hackery is needed because the
 306   kernel's class_device_attribute mechanism fails to pass the actual
 307   attribute through to the show / store functions, which means we have no
 308   way to package up any attribute-specific parameters, like for example the
 309   control id.  So we work around this brain-damage by encoding the control
 310   id into the show / store functions themselves and pick the function based
 311   on the control id we're setting up.  These macros try to ease the pain.
 312   Yuck.
 313 */
 314
 315 #define CREATE_SHOW_INSTANCE(sf_name,ctl_id) \
 316 static ssize_t sf_name##_##ctl_id(struct class_device *class_dev,char *buf) \
 317 { return sf_name(ctl_id,class_dev,buf); }
 318
 319 #define CREATE_STORE_INSTANCE(sf_name,ctl_id) \
 320 static ssize_t sf_name##_##ctl_id(struct class_device *class_dev,const char *buf,size_t count) \
 321 { return sf_name(ctl_id,class_dev,buf,count); }
 322
 323 #define CREATE_BATCH(ctl_id) \
 324 CREATE_SHOW_INSTANCE(show_name,ctl_id) \
 325 CREATE_SHOW_INSTANCE(show_type,ctl_id) \
 326 CREATE_SHOW_INSTANCE(show_min,ctl_id) \
 327 CREATE_SHOW_INSTANCE(show_max,ctl_id) \
 328 CREATE_SHOW_INSTANCE(show_val_norm,ctl_id) \
 329 CREATE_SHOW_INSTANCE(show_val_custom,ctl_id) \
 330 CREATE_SHOW_INSTANCE(show_enum,ctl_id) \
 331 CREATE_SHOW_INSTANCE(show_bits,ctl_id) \
 332 CREATE_STORE_INSTANCE(store_val_norm,ctl_id) \
 333 CREATE_STORE_INSTANCE(store_val_custom,ctl_id) \
 334
 335 CREATE_BATCH(0)
 336 CREATE_BATCH(1)
 337 CREATE_BATCH(2)
 338 CREATE_BATCH(3)
 339 CREATE_BATCH(4)
 340 CREATE_BATCH(5)
 341 CREATE_BATCH(6)
 342 CREATE_BATCH(7)
 343 CREATE_BATCH(8)
 344 CREATE_BATCH(9)
 345 CREATE_BATCH(10)
 346 CREATE_BATCH(11)
 347 CREATE_BATCH(12)
 348 CREATE_BATCH(13)
 349 CREATE_BATCH(14)
 350 CREATE_BATCH(15)
 351 CREATE_BATCH(16)
 352 CREATE_BATCH(17)
 353 CREATE_BATCH(18)
 354 CREATE_BATCH(19)
 355 CREATE_BATCH(20)
 356 CREATE_BATCH(21)
 357 CREATE_BATCH(22)
 358 CREATE_BATCH(23)
 359 CREATE_BATCH(24)
 360 CREATE_BATCH(25)
 361 CREATE_BATCH(26)
 362 CREATE_BATCH(27)
 363 CREATE_BATCH(28)
 364 CREATE_BATCH(29)
 365 CREATE_BATCH(30)
 366 CREATE_BATCH(31)
 367 CREATE_BATCH(32)
 368 CREATE_BATCH(33)
 369 CREATE_BATCH(34)
 370 CREATE_BATCH(35)
 371 CREATE_BATCH(36)
 372 CREATE_BATCH(37)
 373 CREATE_BATCH(38)
 374 CREATE_BATCH(39)
 375 CREATE_BATCH(40)
 376 CREATE_BATCH(41)
 377 CREATE_BATCH(42)
 378 CREATE_BATCH(43)
 379 CREATE_BATCH(44)
 380 CREATE_BATCH(45)
 381 CREATE_BATCH(46)
 382 CREATE_BATCH(47)
 383 CREATE_BATCH(48)
 384 CREATE_BATCH(49)
 385 CREATE_BATCH(50)
 386 CREATE_BATCH(51)
 387 CREATE_BATCH(52)
 388 CREATE_BATCH(53)
 389 CREATE_BATCH(54)
 390 CREATE_BATCH(55)
 391 CREATE_BATCH(56)
 392 CREATE_BATCH(57)
 393 CREATE_BATCH(58)
 394 CREATE_BATCH(59)
 395
 396 struct pvr2_sysfs_func_set {
 397         ssize_t (*show_name)(struct class_device *,char *);
 398         ssize_t (*show_type)(struct class_device *,char *);
 399         ssize_t (*show_min)(struct class_device *,char *);
 400         ssize_t (*show_max)(struct class_device *,char *);
 401         ssize_t (*show_enum)(struct class_device *,char *);
 402         ssize_t (*show_bits)(struct class_device *,char *);
 403         ssize_t (*show_val_norm)(struct class_device *,char *);
 404         ssize_t (*store_val_norm)(struct class_device *,
 405                                   const char *,size_t);
 406         ssize_t (*show_val_custom)(struct class_device *,char *);
 407         ssize_t (*store_val_custom)(struct class_device *,
 408                                     const char *,size_t);
 409 };
 410
 411 #define INIT_BATCH(ctl_id) \
 412 [ctl_id] = { \
 413     .show_name = show_name_##ctl_id, \
 414     .show_type = show_type_##ctl_id, \
 415     .show_min = show_min_##ctl_id, \
 416     .show_max = show_max_##ctl_id, \
 417     .show_enum = show_enum_##ctl_id, \
 418     .show_bits = show_bits_##ctl_id, \
 419     .show_val_norm = show_val_norm_##ctl_id, \
 420     .store_val_norm = store_val_norm_##ctl_id, \
 421     .show_val_custom = show_val_custom_##ctl_id, \
 422     .store_val_custom = store_val_custom_##ctl_id, \
 423 } \
 424
 425 static struct pvr2_sysfs_func_set funcs[] = {
 426         INIT_BATCH(0),
 427         INIT_BATCH(1),
 428         INIT_BATCH(2),
 429         INIT_BATCH(3),
 430         INIT_BATCH(4),
 431         INIT_BATCH(5),
 432         INIT_BATCH(6),
 433         INIT_BATCH(7),
 434         INIT_BATCH(8),
 435         INIT_BATCH(9),
 436         INIT_BATCH(10),
 437         INIT_BATCH(11),
 438         INIT_BATCH(12),
 439         INIT_BATCH(13),
 440         INIT_BATCH(14),
 441         INIT_BATCH(15),
 442         INIT_BATCH(16),
 443         INIT_BATCH(17),
 444         INIT_BATCH(18),
 445         INIT_BATCH(19),
 446         INIT_BATCH(20),
 447         INIT_BATCH(21),
 448         INIT_BATCH(22),
 449         INIT_BATCH(23),
 450         INIT_BATCH(24),
 451         INIT_BATCH(25),
 452         INIT_BATCH(26),
 453         INIT_BATCH(27),
 454         INIT_BATCH(28),
 455         INIT_BATCH(29),
 456         INIT_BATCH(30),
 457         INIT_BATCH(31),
 458         INIT_BATCH(32),
 459         INIT_BATCH(33),
 460         INIT_BATCH(34),
 461         INIT_BATCH(35),
 462         INIT_BATCH(36),
 463         INIT_BATCH(37),
 464         INIT_BATCH(38),
 465         INIT_BATCH(39),
 466         INIT_BATCH(40),
 467         INIT_BATCH(41),
 468         INIT_BATCH(42),
 469         INIT_BATCH(43),
 470         INIT_BATCH(44),
 471         INIT_BATCH(45),
 472         INIT_BATCH(46),
 473         INIT_BATCH(47),
 474         INIT_BATCH(48),
 475         INIT_BATCH(49),
 476         INIT_BATCH(50),
 477         INIT_BATCH(51),
 478         INIT_BATCH(52),
 479         INIT_BATCH(53),
 480         INIT_BATCH(54),
 481         INIT_BATCH(55),
 482         INIT_BATCH(56),
 483         INIT_BATCH(57),
 484         INIT_BATCH(58),
 485         INIT_BATCH(59),
 486 };
 487
 488
 489 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 490 {
 491         struct pvr2_sysfs_ctl_item *cip;
 492         struct pvr2_sysfs_func_set *fp;
 493         struct pvr2_ctrl *cptr;
 494         unsigned int cnt,acnt;
 495         int ret;
 496
 497         if ((ctl_id < 0) || (ctl_id >= (sizeof(funcs)/sizeof(funcs[0])))) {
 498                 return;
 499         }
 500
 501         fp = funcs + ctl_id;
 502         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 503         if (!cptr) return;
 504
 505         cip = kmalloc(sizeof(*cip),GFP_KERNEL);
 506         if (!cip) return;
 507         memset(cip,0,sizeof(*cip));
 508         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 509
 510         cip->cptr = cptr;
 511
 512         cip->chptr = sfp;
 513         cip->item_next = NULL;
 514         if (sfp->item_last) {
 515                 sfp->item_last->item_next = cip;
 516         } else {
 517                 sfp->item_first = cip;
 518         }
 519         sfp->item_last = cip;
 520
 521         cip->attr_name.attr.owner = THIS_MODULE;
 522         cip->attr_name.attr.name = "name";
 523         cip->attr_name.attr.mode = S_IRUGO;
 524         cip->attr_name.show = fp->show_name;
 525
 526         cip->attr_type.attr.owner = THIS_MODULE;
 527         cip->attr_type.attr.name = "type";
 528         cip->attr_type.attr.mode = S_IRUGO;
 529         cip->attr_type.show = fp->show_type;
 530
 531         cip->attr_min.attr.owner = THIS_MODULE;
 532         cip->attr_min.attr.name = "min_val";
 533         cip->attr_min.attr.mode = S_IRUGO;
 534         cip->attr_min.show = fp->show_min;
 535
 536         cip->attr_max.attr.owner = THIS_MODULE;
 537         cip->attr_max.attr.name = "max_val";
 538         cip->attr_max.attr.mode = S_IRUGO;
 539         cip->attr_max.show = fp->show_max;
 540
 541         cip->attr_val.attr.owner = THIS_MODULE;
 542         cip->attr_val.attr.name = "cur_val";
 543         cip->attr_val.attr.mode = S_IRUGO;
 544
 545         cip->attr_custom.attr.owner = THIS_MODULE;
 546         cip->attr_custom.attr.name = "custom_val";
 547         cip->attr_custom.attr.mode = S_IRUGO;
 548
 549         cip->attr_enum.attr.owner = THIS_MODULE;
 550         cip->attr_enum.attr.name = "enum_val";
 551         cip->attr_enum.attr.mode = S_IRUGO;
 552         cip->attr_enum.show = fp->show_enum;
 553
 554         cip->attr_bits.attr.owner = THIS_MODULE;
 555         cip->attr_bits.attr.name = "bit_val";
 556         cip->attr_bits.attr.mode = S_IRUGO;
 557         cip->attr_bits.show = fp->show_bits;
 558
 559         if (pvr2_ctrl_is_writable(cptr)) {
 560                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 561                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 562         }
 563
 564         acnt = 0;
 565         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 566         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 567         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 568         cip->attr_val.show = fp->show_val_norm;
 569         cip->attr_val.store = fp->store_val_norm;
 570         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 571                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 572                 cip->attr_custom.show = fp->show_val_custom;
 573                 cip->attr_custom.store = fp->store_val_custom;
 574         }
 575         switch (pvr2_ctrl_get_type(cptr)) {
 576         case pvr2_ctl_enum:
 577                 // Control is an enumeration
 578                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 579                 break;
 580         case pvr2_ctl_int:
 581                 // Control is an integer
 582                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 583                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 584                 break;
 585         case pvr2_ctl_bitmask:
 586                 // Control is an bitmask
 587                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 588                 break;
 589         default: break;
 590         }
 591
 592         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 593                         pvr2_ctrl_get_name(cptr));
 594         cip->name[cnt] = 0;
 595         cip->grp.name = cip->name;
 596         cip->grp.attrs = cip->attr_gen;
 597
 598         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 599         if (ret) {
 600                 printk(KERN_WARNING "%s: sysfs_create_group error: %d\n",
 601                        __FUNCTION__, ret);
 602                 return;
 603         }
 604         cip->created_ok = !0;
 605 }
 606
 607 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 608 static ssize_t debuginfo_show(struct class_device *,char *);
 609 static ssize_t debugcmd_show(struct class_device *,char *);
 610 static ssize_t debugcmd_store(struct class_device *,const char *,size_t count);
 611
 612 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 613 {
 614         struct pvr2_sysfs_debugifc *dip;
 615         int ret;
 616
 617         dip = kmalloc(sizeof(*dip),GFP_KERNEL);
 618         if (!dip) return;
 619         memset(dip,0,sizeof(*dip));
 620         dip->attr_debugcmd.attr.owner = THIS_MODULE;
 621         dip->attr_debugcmd.attr.name = "debugcmd";
 622         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 623         dip->attr_debugcmd.show = debugcmd_show;
 624         dip->attr_debugcmd.store = debugcmd_store;
 625         dip->attr_debuginfo.attr.owner = THIS_MODULE;
 626         dip->attr_debuginfo.attr.name = "debuginfo";
 627         dip->attr_debuginfo.attr.mode = S_IRUGO;
 628         dip->attr_debuginfo.show = debuginfo_show;
 629         sfp->debugifc = dip;
 630         ret = class_device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 631         if (ret < 0) {
 632                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
 633                        __FUNCTION__, ret);
 634         } else {
 635                 dip->debugcmd_created_ok = !0;
 636         }
 637         ret = class_device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 638         if (ret < 0) {
 639                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
 640                        __FUNCTION__, ret);
 641         } else {
 642                 dip->debuginfo_created_ok = !0;
 643         }
 644 }
 645
 646
 647 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 648 {
 649         if (!sfp->debugifc) return;
 650         if (sfp->debugifc->debuginfo_created_ok) {
 651                 class_device_remove_file(sfp->class_dev,
 652                                          &sfp->debugifc->attr_debuginfo);
 653         }
 654         if (sfp->debugifc->debugcmd_created_ok) {
 655                 class_device_remove_file(sfp->class_dev,
 656                                          &sfp->debugifc->attr_debugcmd);
 657         }
 658         kfree(sfp->debugifc);
 659         sfp->debugifc = NULL;
 660 }
 661 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 662
 663
 664 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 665 {
 666         unsigned int idx,cnt;
 667         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 668         for (idx = 0; idx < cnt; idx++) {
 669                 pvr2_sysfs_add_control(sfp,idx);
 670         }
 671 }
 672
 673
 674 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 675 {
 676         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 677         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 678                 cip2 = cip1->item_next;
 679                 if (cip1->created_ok) {
 680                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 681                 }
 682                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 683                 kfree(cip1);
 684         }
 685 }
 686
 687
 688 static void pvr2_sysfs_class_release(struct class *class)
 689 {
 690         struct pvr2_sysfs_class *clp;
 691         clp = container_of(class,struct pvr2_sysfs_class,class);
 692         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 693         kfree(clp);
 694 }
 695
 696
 697 static void pvr2_sysfs_release(struct class_device *class_dev)
 698 {
 699         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 700         kfree(class_dev);
 701 }
 702
 703
 704 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 705 {
 706         if (!sfp->class_dev) return;
 707 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 708         pvr2_sysfs_tear_down_debugifc(sfp);
 709 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 710         pvr2_sysfs_tear_down_controls(sfp);
 711         if (sfp->v4l_minor_number_created_ok) {
 712                 class_device_remove_file(sfp->class_dev,
 713                                          &sfp->attr_v4l_minor_number);
 714         }
 715         if (sfp->unit_number_created_ok) {
 716                 class_device_remove_file(sfp->class_dev,
 717                                          &sfp->attr_unit_number);
 718         }
 719         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 720         sfp->class_dev->class_data = NULL;
 721         class_device_unregister(sfp->class_dev);
 722         sfp->class_dev = NULL;
 723 }
 724
 725
 726 static ssize_t v4l_minor_number_show(struct class_device *class_dev,char *buf)
 727 {
 728         struct pvr2_sysfs *sfp;
 729         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 730         if (!sfp) return -EINVAL;
 731         return scnprintf(buf,PAGE_SIZE,"%d\n",
 732                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw));
 733 }
 734
 735
 736 static ssize_t unit_number_show(struct class_device *class_dev,char *buf)
 737 {
 738         struct pvr2_sysfs *sfp;
 739         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 740         if (!sfp) return -EINVAL;
 741         return scnprintf(buf,PAGE_SIZE,"%d\n",
 742                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 743 }
 744
 745
 746 static void class_dev_create(struct pvr2_sysfs *sfp,
 747                              struct pvr2_sysfs_class *class_ptr)
 748 {
 749         struct usb_device *usb_dev;
 750         struct class_device *class_dev;
 751         int ret;
 752
 753         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 754         if (!usb_dev) return;
 755         class_dev = kmalloc(sizeof(*class_dev),GFP_KERNEL);
 756         if (!class_dev) return;
 757         memset(class_dev,0,sizeof(*class_dev));
 758
 759         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 760
 761         class_dev->class = &class_ptr->class;
 762         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
 763                 snprintf(class_dev->class_id,BUS_ID_SIZE,"sn-%lu",
 764                          pvr2_hdw_get_sn(sfp->channel.hdw));
 765         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
 766                 snprintf(class_dev->class_id,BUS_ID_SIZE,"unit-%c",
 767                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
 768         } else {
 769                 kfree(class_dev);
 770                 return;
 771         }
 772
 773         class_dev->dev = &usb_dev->dev;
 774
 775         sfp->class_dev = class_dev;
 776         class_dev->class_data = sfp;
 777         ret = class_device_register(class_dev);
 778         if (ret) {
 779                 printk(KERN_ERR "%s: class_device_register failed\n",
 780                        __FUNCTION__);
 781                 kfree(class_dev);
 782                 return;
 783         }
 784
 785         sfp->attr_v4l_minor_number.attr.owner = THIS_MODULE;
 786         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 787         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 788         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 789         sfp->attr_v4l_minor_number.store = NULL;
 790         ret = class_device_create_file(sfp->class_dev,
 791                                        &sfp->attr_v4l_minor_number);
 792         if (ret < 0) {
 793                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
 794                        __FUNCTION__, ret);
 795         } else {
 796                 sfp->v4l_minor_number_created_ok = !0;
 797         }
 798
 799         sfp->attr_unit_number.attr.owner = THIS_MODULE;
 800         sfp->attr_unit_number.attr.name = "unit_number";
 801         sfp->attr_unit_number.attr.mode = S_IRUGO;
 802         sfp->attr_unit_number.show = unit_number_show;
 803         sfp->attr_unit_number.store = NULL;
 804         ret = class_device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 805         if (ret < 0) {
 806                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
 807                        __FUNCTION__, ret);
 808         } else {
 809                 sfp->unit_number_created_ok = !0;
 810         }
 811
 812         pvr2_sysfs_add_controls(sfp);
 813 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 814         pvr2_sysfs_add_debugifc(sfp);
 815 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 816 }
 817
 818
 819 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 820 {
 821         struct pvr2_sysfs *sfp;
 822         sfp = container_of(chp,struct pvr2_sysfs,channel);
 823         if (!sfp->channel.mc_head->disconnect_flag) return;
 824         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 825         class_dev_destroy(sfp);
 826         pvr2_channel_done(&sfp->channel);
 827         kfree(sfp);
 828 }
 829
 830
 831 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 832                                      struct pvr2_sysfs_class *class_ptr)
 833 {
 834         struct pvr2_sysfs *sfp;
 835         sfp = kmalloc(sizeof(*sfp),GFP_KERNEL);
 836         if (!sfp) return sfp;
 837         memset(sfp,0,sizeof(*sfp));
 838         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 839         pvr2_channel_init(&sfp->channel,mp);
 840         sfp->channel.check_func = pvr2_sysfs_internal_check;
 841
 842         class_dev_create(sfp,class_ptr);
 843         return sfp;
 844 }
 845
 846
 847 static int pvr2_sysfs_hotplug(struct class_device *cd,char **envp,
 848                               int numenvp,char *buf,int size)
 849 {
 850         /* Even though we don't do anything here, we still need this function
 851            because sysfs will still try to call it. */
 852         return 0;
 853 }
 854
 855 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 856 {
 857         struct pvr2_sysfs_class *clp;
 858         clp = kmalloc(sizeof(*clp),GFP_KERNEL);
 859         if (!clp) return clp;
 860         memset(clp,0,sizeof(*clp));
 861         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
 862         clp->class.name = "pvrusb2";
 863         clp->class.class_release = pvr2_sysfs_class_release;
 864         clp->class.release = pvr2_sysfs_release;
 865         clp->class.uevent = pvr2_sysfs_hotplug;
 866         if (class_register(&clp->class)) {
 867                 pvr2_sysfs_trace(
 868                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 869                 kfree(clp);
 870                 clp = NULL;
 871         }
 872         return clp;
 873 }
 874
 875
 876 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
 877 {
 878         class_unregister(&clp->class);
 879 }
 880
 881
 882 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 883 static ssize_t debuginfo_show(struct class_device *class_dev,char *buf)
 884 {
 885         struct pvr2_sysfs *sfp;
 886         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 887         if (!sfp) return -EINVAL;
 888         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
 889         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
 890 }
 891
 892
 893 static ssize_t debugcmd_show(struct class_device *class_dev,char *buf)
 894 {
 895         struct pvr2_sysfs *sfp;
 896         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 897         if (!sfp) return -EINVAL;
 898         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
 899 }
 900
 901
 902 static ssize_t debugcmd_store(struct class_device *class_dev,
 903                               const char *buf,size_t count)
 904 {
 905         struct pvr2_sysfs *sfp;
 906         int ret;
 907
 908         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 909         if (!sfp) return -EINVAL;
 910
 911         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
 912         if (ret < 0) return ret;
 913         return count;
 914 }
 915 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 916
 917
 918 /*
 919   Stuff for Emacs to see, in order to encourage consistent editing style:
 920   *** Local Variables: ***
 921   *** mode: c ***
 922   *** fill-column: 75 ***
 923   *** tab-width: 8 ***
 924   *** c-basic-offset: 8 ***
 925   *** End: ***
 926   */