SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/pvrusb2/pvrusb2-sysfs.c

   1 /*
   2  *
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include <linux/string.h>
  22 #include <linux/slab.h>
  23 #include "pvrusb2-sysfs.h"
  24 #include "pvrusb2-hdw.h"
  25 #include "pvrusb2-debug.h"
  26 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  27 #include "pvrusb2-debugifc.h"
  28 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  29
  30 #define pvr2_sysfs_trace(...) pvr2_trace(PVR2_TRACE_SYSFS,__VA_ARGS__)
  31
  32 struct pvr2_sysfs {
  33         struct pvr2_channel channel;
  34         struct device *class_dev;
  35 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  36         struct pvr2_sysfs_debugifc *debugifc;
  37 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  38         struct pvr2_sysfs_ctl_item *item_first;
  39         struct pvr2_sysfs_ctl_item *item_last;
  40         struct device_attribute attr_v4l_minor_number;
  41         struct device_attribute attr_v4l_radio_minor_number;
  42         struct device_attribute attr_unit_number;
  43         struct device_attribute attr_bus_info;
  44         struct device_attribute attr_hdw_name;
  45         struct device_attribute attr_hdw_desc;
  46         int v4l_minor_number_created_ok;
  47         int v4l_radio_minor_number_created_ok;
  48         int unit_number_created_ok;
  49         int bus_info_created_ok;
  50         int hdw_name_created_ok;
  51         int hdw_desc_created_ok;
  52 };
  53
  54 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  55 struct pvr2_sysfs_debugifc {
  56         struct device_attribute attr_debugcmd;
  57         struct device_attribute attr_debuginfo;
  58         int debugcmd_created_ok;
  59         int debuginfo_created_ok;
  60 };
  61 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  62
  63 struct pvr2_sysfs_ctl_item {
  64         struct device_attribute attr_name;
  65         struct device_attribute attr_type;
  66         struct device_attribute attr_min;
  67         struct device_attribute attr_max;
  68         struct device_attribute attr_enum;
  69         struct device_attribute attr_bits;
  70         struct device_attribute attr_val;
  71         struct device_attribute attr_custom;
  72         struct pvr2_ctrl *cptr;
  73         struct pvr2_sysfs *chptr;
  74         struct pvr2_sysfs_ctl_item *item_next;
  75         struct attribute *attr_gen[7];
  76         struct attribute_group grp;
  77         int created_ok;
  78         char name[80];
  79 };
  80
  81 struct pvr2_sysfs_class {
  82         struct class class;
  83 };
  84
  85 static ssize_t show_name(int id,struct device *class_dev,char *buf)
  86 {
  87         struct pvr2_ctrl *cptr;
  88         struct pvr2_sysfs *sfp;
  89         const char *name;
  90
  91         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
  92         if (!sfp) return -EINVAL;
  93         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
  94         if (!cptr) return -EINVAL;
  95
  96         name = pvr2_ctrl_get_desc(cptr);
  97         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",sfp,id,name);
  98
  99         if (!name) return -EINVAL;
 100
 101         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
 102 }
 103
 104 static ssize_t show_type(int id,struct device *class_dev,char *buf)
 105 {
 106         struct pvr2_ctrl *cptr;
 107         struct pvr2_sysfs *sfp;
 108         const char *name;
 109         enum pvr2_ctl_type tp;
 110
 111         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 112         if (!sfp) return -EINVAL;
 113         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 114         if (!cptr) return -EINVAL;
 115
 116         tp = pvr2_ctrl_get_type(cptr);
 117         switch (tp) {
 118         case pvr2_ctl_int: name = "integer"; break;
 119         case pvr2_ctl_enum: name = "enum"; break;
 120         case pvr2_ctl_bitmask: name = "bitmask"; break;
 121         case pvr2_ctl_bool: name = "boolean"; break;
 122         default: name = "?"; break;
 123         }
 124         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",sfp,id,name);
 125
 126         if (!name) return -EINVAL;
 127
 128         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
 129 }
 130
 131 static ssize_t show_min(int id,struct device *class_dev,char *buf)
 132 {
 133         struct pvr2_ctrl *cptr;
 134         struct pvr2_sysfs *sfp;
 135         long val;
 136
 137         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 138         if (!sfp) return -EINVAL;
 139         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 140         if (!cptr) return -EINVAL;
 141         val = pvr2_ctrl_get_min(cptr);
 142
 143         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",sfp,id,val);
 144
 145         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 146 }
 147
 148 static ssize_t show_max(int id,struct device *class_dev,char *buf)
 149 {
 150         struct pvr2_ctrl *cptr;
 151         struct pvr2_sysfs *sfp;
 152         long val;
 153
 154         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 155         if (!sfp) return -EINVAL;
 156         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 157         if (!cptr) return -EINVAL;
 158         val = pvr2_ctrl_get_max(cptr);
 159
 160         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",sfp,id,val);
 161
 162         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 163 }
 164
 165 static ssize_t show_val_norm(int id,struct device *class_dev,char *buf)
 166 {
 167         struct pvr2_ctrl *cptr;
 168         struct pvr2_sysfs *sfp;
 169         int val,ret;
 170         unsigned int cnt = 0;
 171
 172         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 173         if (!sfp) return -EINVAL;
 174         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 175         if (!cptr) return -EINVAL;
 176
 177         ret = pvr2_ctrl_get_value(cptr,&val);
 178         if (ret < 0) return ret;
 179
 180         ret = pvr2_ctrl_value_to_sym(cptr,~0,val,
 181                                      buf,PAGE_SIZE-1,&cnt);
 182
 183         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
 184                          sfp,id,cnt,buf,val);
 185         buf[cnt] = '\n';
 186         return cnt+1;
 187 }
 188
 189 static ssize_t show_val_custom(int id,struct device *class_dev,char *buf)
 190 {
 191         struct pvr2_ctrl *cptr;
 192         struct pvr2_sysfs *sfp;
 193         int val,ret;
 194         unsigned int cnt = 0;
 195
 196         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 197         if (!sfp) return -EINVAL;
 198         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 199         if (!cptr) return -EINVAL;
 200
 201         ret = pvr2_ctrl_get_value(cptr,&val);
 202         if (ret < 0) return ret;
 203
 204         ret = pvr2_ctrl_custom_value_to_sym(cptr,~0,val,
 205                                             buf,PAGE_SIZE-1,&cnt);
 206
 207         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
 208                          sfp,id,cnt,buf,val);
 209         buf[cnt] = '\n';
 210         return cnt+1;
 211 }
 212
 213 static ssize_t show_enum(int id,struct device *class_dev,char *buf)
 214 {
 215         struct pvr2_ctrl *cptr;
 216         struct pvr2_sysfs *sfp;
 217         long val;
 218         unsigned int bcnt,ccnt,ecnt;
 219
 220         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 221         if (!sfp) return -EINVAL;
 222         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 223         if (!cptr) return -EINVAL;
 224         ecnt = pvr2_ctrl_get_cnt(cptr);
 225         bcnt = 0;
 226         for (val = 0; val < ecnt; val++) {
 227                 pvr2_ctrl_get_valname(cptr,val,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 228                 if (!ccnt) continue;
 229                 bcnt += ccnt;
 230                 if (bcnt >= PAGE_SIZE) break;
 231                 buf[bcnt] = '\n';
 232                 bcnt++;
 233         }
 234         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",sfp,id);
 235         return bcnt;
 236 }
 237
 238 static ssize_t show_bits(int id,struct device *class_dev,char *buf)
 239 {
 240         struct pvr2_ctrl *cptr;
 241         struct pvr2_sysfs *sfp;
 242         int valid_bits,msk;
 243         unsigned int bcnt,ccnt;
 244
 245         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 246         if (!sfp) return -EINVAL;
 247         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 248         if (!cptr) return -EINVAL;
 249         valid_bits = pvr2_ctrl_get_mask(cptr);
 250         bcnt = 0;
 251         for (msk = 1; valid_bits; msk <<= 1) {
 252                 if (!(msk & valid_bits)) continue;
 253                 valid_bits &= ~msk;
 254                 pvr2_ctrl_get_valname(cptr,msk,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 255                 bcnt += ccnt;
 256                 if (bcnt >= PAGE_SIZE) break;
 257                 buf[bcnt] = '\n';
 258                 bcnt++;
 259         }
 260         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",sfp,id);
 261         return bcnt;
 262 }
 263
 264 static int store_val_any(int id,int customfl,struct pvr2_sysfs *sfp,
 265                          const char *buf,unsigned int count)
 266 {
 267         struct pvr2_ctrl *cptr;
 268         int ret;
 269         int mask,val;
 270
 271         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 272         if (customfl) {
 273                 ret = pvr2_ctrl_custom_sym_to_value(cptr,buf,count,&mask,&val);
 274         } else {
 275                 ret = pvr2_ctrl_sym_to_value(cptr,buf,count,&mask,&val);
 276         }
 277         if (ret < 0) return ret;
 278         ret = pvr2_ctrl_set_mask_value(cptr,mask,val);
 279         pvr2_hdw_commit_ctl(sfp->channel.hdw);
 280         return ret;
 281 }
 282
 283 static ssize_t store_val_norm(int id,struct device *class_dev,
 284                              const char *buf,size_t count)
 285 {
 286         struct pvr2_sysfs *sfp;
 287         int ret;
 288         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 289         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
 290                          sfp,id,(int)count,buf);
 291         ret = store_val_any(id,0,sfp,buf,count);
 292         if (!ret) ret = count;
 293         return ret;
 294 }
 295
 296 static ssize_t store_val_custom(int id,struct device *class_dev,
 297                                 const char *buf,size_t count)
 298 {
 299         struct pvr2_sysfs *sfp;
 300         int ret;
 301         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 302         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
 303                          sfp,id,(int)count,buf);
 304         ret = store_val_any(id,1,sfp,buf,count);
 305         if (!ret) ret = count;
 306         return ret;
 307 }
 308
 309 /*
 310   Mike Isely <isely@pobox.com> 30-April-2005
 311
 312   This next batch of horrible preprocessor hackery is needed because the
 313   kernel's device_attribute mechanism fails to pass the actual
 314   attribute through to the show / store functions, which means we have no
 315   way to package up any attribute-specific parameters, like for example the
 316   control id.  So we work around this brain-damage by encoding the control
 317   id into the show / store functions themselves and pick the function based
 318   on the control id we're setting up.  These macros try to ease the pain.
 319   Yuck.
 320 */
 321
 322 #define CREATE_SHOW_INSTANCE(sf_name,ctl_id) \
 323 static ssize_t sf_name##_##ctl_id(struct device *class_dev, \
 324 struct device_attribute *attr, char *buf) \
 325 { return sf_name(ctl_id,class_dev,buf); }
 326
 327 #define CREATE_STORE_INSTANCE(sf_name,ctl_id) \
 328 static ssize_t sf_name##_##ctl_id(struct device *class_dev, \
 329 struct device_attribute *attr, const char *buf, size_t count) \
 330 { return sf_name(ctl_id,class_dev,buf,count); }
 331
 332 #define CREATE_BATCH(ctl_id) \
 333 CREATE_SHOW_INSTANCE(show_name,ctl_id) \
 334 CREATE_SHOW_INSTANCE(show_type,ctl_id) \
 335 CREATE_SHOW_INSTANCE(show_min,ctl_id) \
 336 CREATE_SHOW_INSTANCE(show_max,ctl_id) \
 337 CREATE_SHOW_INSTANCE(show_val_norm,ctl_id) \
 338 CREATE_SHOW_INSTANCE(show_val_custom,ctl_id) \
 339 CREATE_SHOW_INSTANCE(show_enum,ctl_id) \
 340 CREATE_SHOW_INSTANCE(show_bits,ctl_id) \
 341 CREATE_STORE_INSTANCE(store_val_norm,ctl_id) \
 342 CREATE_STORE_INSTANCE(store_val_custom,ctl_id) \
 343
 344 CREATE_BATCH(0)
 345 CREATE_BATCH(1)
 346 CREATE_BATCH(2)
 347 CREATE_BATCH(3)
 348 CREATE_BATCH(4)
 349 CREATE_BATCH(5)
 350 CREATE_BATCH(6)
 351 CREATE_BATCH(7)
 352 CREATE_BATCH(8)
 353 CREATE_BATCH(9)
 354 CREATE_BATCH(10)
 355 CREATE_BATCH(11)
 356 CREATE_BATCH(12)
 357 CREATE_BATCH(13)
 358 CREATE_BATCH(14)
 359 CREATE_BATCH(15)
 360 CREATE_BATCH(16)
 361 CREATE_BATCH(17)
 362 CREATE_BATCH(18)
 363 CREATE_BATCH(19)
 364 CREATE_BATCH(20)
 365 CREATE_BATCH(21)
 366 CREATE_BATCH(22)
 367 CREATE_BATCH(23)
 368 CREATE_BATCH(24)
 369 CREATE_BATCH(25)
 370 CREATE_BATCH(26)
 371 CREATE_BATCH(27)
 372 CREATE_BATCH(28)
 373 CREATE_BATCH(29)
 374 CREATE_BATCH(30)
 375 CREATE_BATCH(31)
 376 CREATE_BATCH(32)
 377 CREATE_BATCH(33)
 378 CREATE_BATCH(34)
 379 CREATE_BATCH(35)
 380 CREATE_BATCH(36)
 381 CREATE_BATCH(37)
 382 CREATE_BATCH(38)
 383 CREATE_BATCH(39)
 384 CREATE_BATCH(40)
 385 CREATE_BATCH(41)
 386 CREATE_BATCH(42)
 387 CREATE_BATCH(43)
 388 CREATE_BATCH(44)
 389 CREATE_BATCH(45)
 390 CREATE_BATCH(46)
 391 CREATE_BATCH(47)
 392 CREATE_BATCH(48)
 393 CREATE_BATCH(49)
 394 CREATE_BATCH(50)
 395 CREATE_BATCH(51)
 396 CREATE_BATCH(52)
 397 CREATE_BATCH(53)
 398 CREATE_BATCH(54)
 399 CREATE_BATCH(55)
 400 CREATE_BATCH(56)
 401 CREATE_BATCH(57)
 402 CREATE_BATCH(58)
 403 CREATE_BATCH(59)
 404
 405 struct pvr2_sysfs_func_set {
 406         ssize_t (*show_name)(struct device *,
 407                              struct device_attribute *attr, char *);
 408         ssize_t (*show_type)(struct device *,
 409                              struct device_attribute *attr, char *);
 410         ssize_t (*show_min)(struct device *,
 411                             struct device_attribute *attr, char *);
 412         ssize_t (*show_max)(struct device *,
 413                             struct device_attribute *attr, char *);
 414         ssize_t (*show_enum)(struct device *,
 415                              struct device_attribute *attr, char *);
 416         ssize_t (*show_bits)(struct device *,
 417                              struct device_attribute *attr, char *);
 418         ssize_t (*show_val_norm)(struct device *,
 419                                  struct device_attribute *attr, char *);
 420         ssize_t (*store_val_norm)(struct device *,
 421                                   struct device_attribute *attr,
 422                                   const char *,size_t);
 423         ssize_t (*show_val_custom)(struct device *,
 424                                    struct device_attribute *attr, char *);
 425         ssize_t (*store_val_custom)(struct device *,
 426                                     struct device_attribute *attr,
 427                                     const char *,size_t);
 428 };
 429
 430 #define INIT_BATCH(ctl_id) \
 431 [ctl_id] = { \
 432     .show_name = show_name_##ctl_id, \
 433     .show_type = show_type_##ctl_id, \
 434     .show_min = show_min_##ctl_id, \
 435     .show_max = show_max_##ctl_id, \
 436     .show_enum = show_enum_##ctl_id, \
 437     .show_bits = show_bits_##ctl_id, \
 438     .show_val_norm = show_val_norm_##ctl_id, \
 439     .store_val_norm = store_val_norm_##ctl_id, \
 440     .show_val_custom = show_val_custom_##ctl_id, \
 441     .store_val_custom = store_val_custom_##ctl_id, \
 442 } \
 443
 444 static struct pvr2_sysfs_func_set funcs[] = {
 445         INIT_BATCH(0),
 446         INIT_BATCH(1),
 447         INIT_BATCH(2),
 448         INIT_BATCH(3),
 449         INIT_BATCH(4),
 450         INIT_BATCH(5),
 451         INIT_BATCH(6),
 452         INIT_BATCH(7),
 453         INIT_BATCH(8),
 454         INIT_BATCH(9),
 455         INIT_BATCH(10),
 456         INIT_BATCH(11),
 457         INIT_BATCH(12),
 458         INIT_BATCH(13),
 459         INIT_BATCH(14),
 460         INIT_BATCH(15),
 461         INIT_BATCH(16),
 462         INIT_BATCH(17),
 463         INIT_BATCH(18),
 464         INIT_BATCH(19),
 465         INIT_BATCH(20),
 466         INIT_BATCH(21),
 467         INIT_BATCH(22),
 468         INIT_BATCH(23),
 469         INIT_BATCH(24),
 470         INIT_BATCH(25),
 471         INIT_BATCH(26),
 472         INIT_BATCH(27),
 473         INIT_BATCH(28),
 474         INIT_BATCH(29),
 475         INIT_BATCH(30),
 476         INIT_BATCH(31),
 477         INIT_BATCH(32),
 478         INIT_BATCH(33),
 479         INIT_BATCH(34),
 480         INIT_BATCH(35),
 481         INIT_BATCH(36),
 482         INIT_BATCH(37),
 483         INIT_BATCH(38),
 484         INIT_BATCH(39),
 485         INIT_BATCH(40),
 486         INIT_BATCH(41),
 487         INIT_BATCH(42),
 488         INIT_BATCH(43),
 489         INIT_BATCH(44),
 490         INIT_BATCH(45),
 491         INIT_BATCH(46),
 492         INIT_BATCH(47),
 493         INIT_BATCH(48),
 494         INIT_BATCH(49),
 495         INIT_BATCH(50),
 496         INIT_BATCH(51),
 497         INIT_BATCH(52),
 498         INIT_BATCH(53),
 499         INIT_BATCH(54),
 500         INIT_BATCH(55),
 501         INIT_BATCH(56),
 502         INIT_BATCH(57),
 503         INIT_BATCH(58),
 504         INIT_BATCH(59),
 505 };
 506
 507
 508 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 509 {
 510         struct pvr2_sysfs_ctl_item *cip;
 511         struct pvr2_sysfs_func_set *fp;
 512         struct pvr2_ctrl *cptr;
 513         unsigned int cnt,acnt;
 514         int ret;
 515
 516         if ((ctl_id < 0) || (ctl_id >= ARRAY_SIZE(funcs))) {
 517                 return;
 518         }
 519
 520         fp = funcs + ctl_id;
 521         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 522         if (!cptr) return;
 523
 524         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
 525         if (!cip) return;
 526         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 527
 528         cip->cptr = cptr;
 529
 530         cip->chptr = sfp;
 531         cip->item_next = NULL;
 532         if (sfp->item_last) {
 533                 sfp->item_last->item_next = cip;
 534         } else {
 535                 sfp->item_first = cip;
 536         }
 537         sfp->item_last = cip;
 538
 539         cip->attr_name.attr.name = "name";
 540         cip->attr_name.attr.mode = S_IRUGO;
 541         cip->attr_name.show = fp->show_name;
 542
 543         cip->attr_type.attr.name = "type";
 544         cip->attr_type.attr.mode = S_IRUGO;
 545         cip->attr_type.show = fp->show_type;
 546
 547         cip->attr_min.attr.name = "min_val";
 548         cip->attr_min.attr.mode = S_IRUGO;
 549         cip->attr_min.show = fp->show_min;
 550
 551         cip->attr_max.attr.name = "max_val";
 552         cip->attr_max.attr.mode = S_IRUGO;
 553         cip->attr_max.show = fp->show_max;
 554
 555         cip->attr_val.attr.name = "cur_val";
 556         cip->attr_val.attr.mode = S_IRUGO;
 557
 558         cip->attr_custom.attr.name = "custom_val";
 559         cip->attr_custom.attr.mode = S_IRUGO;
 560
 561         cip->attr_enum.attr.name = "enum_val";
 562         cip->attr_enum.attr.mode = S_IRUGO;
 563         cip->attr_enum.show = fp->show_enum;
 564
 565         cip->attr_bits.attr.name = "bit_val";
 566         cip->attr_bits.attr.mode = S_IRUGO;
 567         cip->attr_bits.show = fp->show_bits;
 568
 569         if (pvr2_ctrl_is_writable(cptr)) {
 570                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 571                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 572         }
 573
 574         acnt = 0;
 575         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 576         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 577         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 578         cip->attr_val.show = fp->show_val_norm;
 579         cip->attr_val.store = fp->store_val_norm;
 580         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 581                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 582                 cip->attr_custom.show = fp->show_val_custom;
 583                 cip->attr_custom.store = fp->store_val_custom;
 584         }
 585         switch (pvr2_ctrl_get_type(cptr)) {
 586         case pvr2_ctl_enum:
 587                 // Control is an enumeration
 588                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 589                 break;
 590         case pvr2_ctl_int:
 591                 // Control is an integer
 592                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 593                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 594                 break;
 595         case pvr2_ctl_bitmask:
 596                 // Control is an bitmask
 597                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 598                 break;
 599         default: break;
 600         }
 601
 602         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 603                         pvr2_ctrl_get_name(cptr));
 604         cip->name[cnt] = 0;
 605         cip->grp.name = cip->name;
 606         cip->grp.attrs = cip->attr_gen;
 607
 608         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 609         if (ret) {
 610                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 611                            "sysfs_create_group error: %d",
 612                            ret);
 613                 return;
 614         }
 615         cip->created_ok = !0;
 616 }
 617
 618 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 619 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
 620                               char *);
 621 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
 622                              char *);
 623 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
 624                               const char *, size_t count);
 625
 626 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 627 {
 628         struct pvr2_sysfs_debugifc *dip;
 629         int ret;
 630
 631         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
 632         if (!dip) return;
 633         dip->attr_debugcmd.attr.name = "debugcmd";
 634         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 635         dip->attr_debugcmd.show = debugcmd_show;
 636         dip->attr_debugcmd.store = debugcmd_store;
 637         dip->attr_debuginfo.attr.name = "debuginfo";
 638         dip->attr_debuginfo.attr.mode = S_IRUGO;
 639         dip->attr_debuginfo.show = debuginfo_show;
 640         sfp->debugifc = dip;
 641         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 642         if (ret < 0) {
 643                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 644                            "device_create_file error: %d",
 645                            ret);
 646         } else {
 647                 dip->debugcmd_created_ok = !0;
 648         }
 649         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 650         if (ret < 0) {
 651                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 652                            "device_create_file error: %d",
 653                            ret);
 654         } else {
 655                 dip->debuginfo_created_ok = !0;
 656         }
 657 }
 658
 659
 660 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 661 {
 662         if (!sfp->debugifc) return;
 663         if (sfp->debugifc->debuginfo_created_ok) {
 664                 device_remove_file(sfp->class_dev,
 665                                          &sfp->debugifc->attr_debuginfo);
 666         }
 667         if (sfp->debugifc->debugcmd_created_ok) {
 668                 device_remove_file(sfp->class_dev,
 669                                          &sfp->debugifc->attr_debugcmd);
 670         }
 671         kfree(sfp->debugifc);
 672         sfp->debugifc = NULL;
 673 }
 674 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 675
 676
 677 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 678 {
 679         unsigned int idx,cnt;
 680         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 681         for (idx = 0; idx < cnt; idx++) {
 682                 pvr2_sysfs_add_control(sfp,idx);
 683         }
 684 }
 685
 686
 687 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 688 {
 689         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 690         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 691                 cip2 = cip1->item_next;
 692                 if (cip1->created_ok) {
 693                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 694                 }
 695                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 696                 kfree(cip1);
 697         }
 698 }
 699
 700
 701 static void pvr2_sysfs_class_release(struct class *class)
 702 {
 703         struct pvr2_sysfs_class *clp;
 704         clp = container_of(class,struct pvr2_sysfs_class,class);
 705         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 706         kfree(clp);
 707 }
 708
 709
 710 static void pvr2_sysfs_release(struct device *class_dev)
 711 {
 712         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 713         kfree(class_dev);
 714 }
 715
 716
 717 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 718 {
 719         if (!sfp->class_dev) return;
 720 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 721         pvr2_sysfs_tear_down_debugifc(sfp);
 722 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 723         pvr2_sysfs_tear_down_controls(sfp);
 724         if (sfp->hdw_desc_created_ok) {
 725                 device_remove_file(sfp->class_dev,
 726                                    &sfp->attr_hdw_desc);
 727         }
 728         if (sfp->hdw_name_created_ok) {
 729                 device_remove_file(sfp->class_dev,
 730                                    &sfp->attr_hdw_name);
 731         }
 732         if (sfp->bus_info_created_ok) {
 733                 device_remove_file(sfp->class_dev,
 734                                          &sfp->attr_bus_info);
 735         }
 736         if (sfp->v4l_minor_number_created_ok) {
 737                 device_remove_file(sfp->class_dev,
 738                                          &sfp->attr_v4l_minor_number);
 739         }
 740         if (sfp->v4l_radio_minor_number_created_ok) {
 741                 device_remove_file(sfp->class_dev,
 742                                          &sfp->attr_v4l_radio_minor_number);
 743         }
 744         if (sfp->unit_number_created_ok) {
 745                 device_remove_file(sfp->class_dev,
 746                                          &sfp->attr_unit_number);
 747         }
 748         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 749         sfp->class_dev->driver_data = NULL;
 750         device_unregister(sfp->class_dev);
 751         sfp->class_dev = NULL;
 752 }
 753
 754
 755 static ssize_t v4l_minor_number_show(struct device *class_dev,
 756                                      struct device_attribute *attr, char *buf)
 757 {
 758         struct pvr2_sysfs *sfp;
 759         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 760         if (!sfp) return -EINVAL;
 761         return scnprintf(buf,PAGE_SIZE,"%d\n",
 762                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 763                                                        pvr2_v4l_type_video));
 764 }
 765
 766
 767 static ssize_t bus_info_show(struct device *class_dev,
 768                              struct device_attribute *attr, char *buf)
 769 {
 770         struct pvr2_sysfs *sfp;
 771         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 772         if (!sfp) return -EINVAL;
 773         return scnprintf(buf,PAGE_SIZE,"%s\n",
 774                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
 775 }
 776
 777
 778 static ssize_t hdw_name_show(struct device *class_dev,
 779                              struct device_attribute *attr, char *buf)
 780 {
 781         struct pvr2_sysfs *sfp;
 782         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 783         if (!sfp) return -EINVAL;
 784         return scnprintf(buf,PAGE_SIZE,"%s\n",
 785                          pvr2_hdw_get_type(sfp->channel.hdw));
 786 }
 787
 788
 789 static ssize_t hdw_desc_show(struct device *class_dev,
 790                              struct device_attribute *attr, char *buf)
 791 {
 792         struct pvr2_sysfs *sfp;
 793         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 794         if (!sfp) return -EINVAL;
 795         return scnprintf(buf,PAGE_SIZE,"%s\n",
 796                          pvr2_hdw_get_desc(sfp->channel.hdw));
 797 }
 798
 799
 800 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
 801                                            struct device_attribute *attr,
 802                                            char *buf)
 803 {
 804         struct pvr2_sysfs *sfp;
 805         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 806         if (!sfp) return -EINVAL;
 807         return scnprintf(buf,PAGE_SIZE,"%d\n",
 808                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 809                                                        pvr2_v4l_type_radio));
 810 }
 811
 812
 813 static ssize_t unit_number_show(struct device *class_dev,
 814                                 struct device_attribute *attr, char *buf)
 815 {
 816         struct pvr2_sysfs *sfp;
 817         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 818         if (!sfp) return -EINVAL;
 819         return scnprintf(buf,PAGE_SIZE,"%d\n",
 820                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 821 }
 822
 823
 824 static void class_dev_create(struct pvr2_sysfs *sfp,
 825                              struct pvr2_sysfs_class *class_ptr)
 826 {
 827         struct usb_device *usb_dev;
 828         struct device *class_dev;
 829         int ret;
 830
 831         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 832         if (!usb_dev) return;
 833         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 834         if (!class_dev) return;
 835
 836         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 837
 838         class_dev->class = &class_ptr->class;
 839         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
 840                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "sn-%lu",
 841                          pvr2_hdw_get_sn(sfp->channel.hdw));
 842         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
 843                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "unit-%c",
 844                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
 845         } else {
 846                 kfree(class_dev);
 847                 return;
 848         }
 849
 850         class_dev->parent = &usb_dev->dev;
 851
 852         sfp->class_dev = class_dev;
 853         class_dev->driver_data = sfp;
 854         ret = device_register(class_dev);
 855         if (ret) {
 856                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 857                            "device_register failed");
 858                 kfree(class_dev);
 859                 return;
 860         }
 861
 862         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 863         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 864         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 865         sfp->attr_v4l_minor_number.store = NULL;
 866         ret = device_create_file(sfp->class_dev,
 867                                        &sfp->attr_v4l_minor_number);
 868         if (ret < 0) {
 869                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 870                            "device_create_file error: %d",
 871                            ret);
 872         } else {
 873                 sfp->v4l_minor_number_created_ok = !0;
 874         }
 875
 876         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 877         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 878         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 879         sfp->attr_v4l_radio_minor_number.store = NULL;
 880         ret = device_create_file(sfp->class_dev,
 881                                        &sfp->attr_v4l_radio_minor_number);
 882         if (ret < 0) {
 883                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 884                            "device_create_file error: %d",
 885                            ret);
 886         } else {
 887                 sfp->v4l_radio_minor_number_created_ok = !0;
 888         }
 889
 890         sfp->attr_unit_number.attr.name = "unit_number";
 891         sfp->attr_unit_number.attr.mode = S_IRUGO;
 892         sfp->attr_unit_number.show = unit_number_show;
 893         sfp->attr_unit_number.store = NULL;
 894         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 895         if (ret < 0) {
 896                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 897                            "device_create_file error: %d",
 898                            ret);
 899         } else {
 900                 sfp->unit_number_created_ok = !0;
 901         }
 902
 903         sfp->attr_bus_info.attr.name = "bus_info_str";
 904         sfp->attr_bus_info.attr.mode = S_IRUGO;
 905         sfp->attr_bus_info.show = bus_info_show;
 906         sfp->attr_bus_info.store = NULL;
 907         ret = device_create_file(sfp->class_dev,
 908                                        &sfp->attr_bus_info);
 909         if (ret < 0) {
 910                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 911                            "device_create_file error: %d",
 912                            ret);
 913         } else {
 914                 sfp->bus_info_created_ok = !0;
 915         }
 916
 917         sfp->attr_hdw_name.attr.name = "device_hardware_type";
 918         sfp->attr_hdw_name.attr.mode = S_IRUGO;
 919         sfp->attr_hdw_name.show = hdw_name_show;
 920         sfp->attr_hdw_name.store = NULL;
 921         ret = device_create_file(sfp->class_dev,
 922                                  &sfp->attr_hdw_name);
 923         if (ret < 0) {
 924                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 925                            "device_create_file error: %d",
 926                            ret);
 927         } else {
 928                 sfp->hdw_name_created_ok = !0;
 929         }
 930
 931         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
 932         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
 933         sfp->attr_hdw_desc.show = hdw_desc_show;
 934         sfp->attr_hdw_desc.store = NULL;
 935         ret = device_create_file(sfp->class_dev,
 936                                  &sfp->attr_hdw_desc);
 937         if (ret < 0) {
 938                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 939                            "device_create_file error: %d",
 940                            ret);
 941         } else {
 942                 sfp->hdw_desc_created_ok = !0;
 943         }
 944
 945         pvr2_sysfs_add_controls(sfp);
 946 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 947         pvr2_sysfs_add_debugifc(sfp);
 948 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 949 }
 950
 951
 952 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 953 {
 954         struct pvr2_sysfs *sfp;
 955         sfp = container_of(chp,struct pvr2_sysfs,channel);
 956         if (!sfp->channel.mc_head->disconnect_flag) return;
 957         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 958         class_dev_destroy(sfp);
 959         pvr2_channel_done(&sfp->channel);
 960         kfree(sfp);
 961 }
 962
 963
 964 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 965                                      struct pvr2_sysfs_class *class_ptr)
 966 {
 967         struct pvr2_sysfs *sfp;
 968         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 969         if (!sfp) return sfp;
 970         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 971         pvr2_channel_init(&sfp->channel,mp);
 972         sfp->channel.check_func = pvr2_sysfs_internal_check;
 973
 974         class_dev_create(sfp,class_ptr);
 975         return sfp;
 976 }
 977
 978
 979
 980 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 981 {
 982         struct pvr2_sysfs_class *clp;
 983         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 984         if (!clp) return clp;
 985         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
 986         clp->class.name = "pvrusb2";
 987         clp->class.class_release = pvr2_sysfs_class_release;
 988         clp->class.dev_release = pvr2_sysfs_release;
 989         if (class_register(&clp->class)) {
 990                 pvr2_sysfs_trace(
 991                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 992                 kfree(clp);
 993                 clp = NULL;
 994         }
 995         return clp;
 996 }
 997
 998
 999 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
1000 {
1001         class_unregister(&clp->class);
1002 }
1003
1004
1005 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
1006 static ssize_t debuginfo_show(struct device *class_dev,
1007                               struct device_attribute *attr, char *buf)
1008 {
1009         struct pvr2_sysfs *sfp;
1010         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
1011         if (!sfp) return -EINVAL;
1012         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
1013         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
1014 }
1015
1016
1017 static ssize_t debugcmd_show(struct device *class_dev,
1018                              struct device_attribute *attr, char *buf)
1019 {
1020         struct pvr2_sysfs *sfp;
1021         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
1022         if (!sfp) return -EINVAL;
1023         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
1024 }
1025
1026
1027 static ssize_t debugcmd_store(struct device *class_dev,
1028                               struct device_attribute *attr,
1029                               const char *buf, size_t count)
1030 {
1031         struct pvr2_sysfs *sfp;
1032         int ret;
1033
1034         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
1035         if (!sfp) return -EINVAL;
1036
1037         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
1038         if (ret < 0) return ret;
1039         return count;
1040 }
1041 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
1042
1043
1044 /*
1045   Stuff for Emacs to see, in order to encourage consistent editing style:
1046   *** Local Variables: ***
1047   *** mode: c ***
1048   *** fill-column: 75 ***
1049   *** tab-width: 8 ***
1050   *** c-basic-offset: 8 ***
1051   *** End: ***
1052   */