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

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