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 "pvrusb2-sysfs.h"
  25 #include "pvrusb2-hdw.h"
  26 #include "pvrusb2-debug.h"
  27 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  28 #include "pvrusb2-debugifc.h"
  29 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  30
  31 #define pvr2_sysfs_trace(...) pvr2_trace(PVR2_TRACE_SYSFS,__VA_ARGS__)
  32
  33 struct pvr2_sysfs {
  34         struct pvr2_channel channel;
  35         struct device *class_dev;
  36 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  37         struct pvr2_sysfs_debugifc *debugifc;
  38 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  39         struct pvr2_sysfs_ctl_item *item_first;
  40         struct pvr2_sysfs_ctl_item *item_last;
  41         struct device_attribute attr_v4l_minor_number;
  42         struct device_attribute attr_v4l_radio_minor_number;
  43         struct device_attribute attr_unit_number;
  44         struct device_attribute attr_bus_info;
  45         struct device_attribute attr_hdw_name;
  46         struct device_attribute attr_hdw_desc;
  47         int v4l_minor_number_created_ok;
  48         int v4l_radio_minor_number_created_ok;
  49         int unit_number_created_ok;
  50         int bus_info_created_ok;
  51         int hdw_name_created_ok;
  52         int hdw_desc_created_ok;
  53 };
  54
  55 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  56 struct pvr2_sysfs_debugifc {
  57         struct device_attribute attr_debugcmd;
  58         struct device_attribute attr_debuginfo;
  59         int debugcmd_created_ok;
  60         int debuginfo_created_ok;
  61 };
  62 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  63
  64 struct pvr2_sysfs_ctl_item {
  65         struct device_attribute attr_name;
  66         struct device_attribute attr_type;
  67         struct device_attribute attr_min;
  68         struct device_attribute attr_max;
  69         struct device_attribute attr_enum;
  70         struct device_attribute attr_bits;
  71         struct device_attribute attr_val;
  72         struct device_attribute attr_custom;
  73         struct pvr2_ctrl *cptr;
  74         struct pvr2_sysfs *chptr;
  75         struct pvr2_sysfs_ctl_item *item_next;
  76         struct attribute *attr_gen[7];
  77         struct attribute_group grp;
  78         int created_ok;
  79         char name[80];
  80 };
  81
  82 struct pvr2_sysfs_class {
  83         struct class class;
  84 };
  85
  86 static ssize_t show_name(int id,struct device *class_dev,char *buf)
  87 {
  88         struct pvr2_ctrl *cptr;
  89         struct pvr2_sysfs *sfp;
  90         const char *name;
  91
  92         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
  93         if (!sfp) return -EINVAL;
  94         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
  95         if (!cptr) return -EINVAL;
  96
  97         name = pvr2_ctrl_get_desc(cptr);
  98         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",sfp,id,name);
  99
 100         if (!name) return -EINVAL;
 101
 102         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
 103 }
 104
 105 static ssize_t show_type(int id,struct device *class_dev,char *buf)
 106 {
 107         struct pvr2_ctrl *cptr;
 108         struct pvr2_sysfs *sfp;
 109         const char *name;
 110         enum pvr2_ctl_type tp;
 111
 112         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 113         if (!sfp) return -EINVAL;
 114         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 115         if (!cptr) return -EINVAL;
 116
 117         tp = pvr2_ctrl_get_type(cptr);
 118         switch (tp) {
 119         case pvr2_ctl_int: name = "integer"; break;
 120         case pvr2_ctl_enum: name = "enum"; break;
 121         case pvr2_ctl_bitmask: name = "bitmask"; break;
 122         case pvr2_ctl_bool: name = "boolean"; break;
 123         default: name = "?"; break;
 124         }
 125         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",sfp,id,name);
 126
 127         if (!name) return -EINVAL;
 128
 129         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
 130 }
 131
 132 static ssize_t show_min(int id,struct device *class_dev,char *buf)
 133 {
 134         struct pvr2_ctrl *cptr;
 135         struct pvr2_sysfs *sfp;
 136         long val;
 137
 138         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 139         if (!sfp) return -EINVAL;
 140         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 141         if (!cptr) return -EINVAL;
 142         val = pvr2_ctrl_get_min(cptr);
 143
 144         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",sfp,id,val);
 145
 146         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 147 }
 148
 149 static ssize_t show_max(int id,struct device *class_dev,char *buf)
 150 {
 151         struct pvr2_ctrl *cptr;
 152         struct pvr2_sysfs *sfp;
 153         long val;
 154
 155         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 156         if (!sfp) return -EINVAL;
 157         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 158         if (!cptr) return -EINVAL;
 159         val = pvr2_ctrl_get_max(cptr);
 160
 161         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",sfp,id,val);
 162
 163         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 164 }
 165
 166 static ssize_t show_val_norm(int id,struct device *class_dev,char *buf)
 167 {
 168         struct pvr2_ctrl *cptr;
 169         struct pvr2_sysfs *sfp;
 170         int val,ret;
 171         unsigned int cnt = 0;
 172
 173         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 174         if (!sfp) return -EINVAL;
 175         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 176         if (!cptr) return -EINVAL;
 177
 178         ret = pvr2_ctrl_get_value(cptr,&val);
 179         if (ret < 0) return ret;
 180
 181         ret = pvr2_ctrl_value_to_sym(cptr,~0,val,
 182                                      buf,PAGE_SIZE-1,&cnt);
 183
 184         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
 185                          sfp,id,cnt,buf,val);
 186         buf[cnt] = '\n';
 187         return cnt+1;
 188 }
 189
 190 static ssize_t show_val_custom(int id,struct device *class_dev,char *buf)
 191 {
 192         struct pvr2_ctrl *cptr;
 193         struct pvr2_sysfs *sfp;
 194         int val,ret;
 195         unsigned int cnt = 0;
 196
 197         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 198         if (!sfp) return -EINVAL;
 199         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 200         if (!cptr) return -EINVAL;
 201
 202         ret = pvr2_ctrl_get_value(cptr,&val);
 203         if (ret < 0) return ret;
 204
 205         ret = pvr2_ctrl_custom_value_to_sym(cptr,~0,val,
 206                                             buf,PAGE_SIZE-1,&cnt);
 207
 208         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
 209                          sfp,id,cnt,buf,val);
 210         buf[cnt] = '\n';
 211         return cnt+1;
 212 }
 213
 214 static ssize_t show_enum(int id,struct device *class_dev,char *buf)
 215 {
 216         struct pvr2_ctrl *cptr;
 217         struct pvr2_sysfs *sfp;
 218         long val;
 219         unsigned int bcnt,ccnt,ecnt;
 220
 221         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 222         if (!sfp) return -EINVAL;
 223         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 224         if (!cptr) return -EINVAL;
 225         ecnt = pvr2_ctrl_get_cnt(cptr);
 226         bcnt = 0;
 227         for (val = 0; val < ecnt; val++) {
 228                 pvr2_ctrl_get_valname(cptr,val,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 229                 if (!ccnt) continue;
 230                 bcnt += ccnt;
 231                 if (bcnt >= PAGE_SIZE) break;
 232                 buf[bcnt] = '\n';
 233                 bcnt++;
 234         }
 235         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",sfp,id);
 236         return bcnt;
 237 }
 238
 239 static ssize_t show_bits(int id,struct device *class_dev,char *buf)
 240 {
 241         struct pvr2_ctrl *cptr;
 242         struct pvr2_sysfs *sfp;
 243         int valid_bits,msk;
 244         unsigned int bcnt,ccnt;
 245
 246         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 247         if (!sfp) return -EINVAL;
 248         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 249         if (!cptr) return -EINVAL;
 250         valid_bits = pvr2_ctrl_get_mask(cptr);
 251         bcnt = 0;
 252         for (msk = 1; valid_bits; msk <<= 1) {
 253                 if (!(msk & valid_bits)) continue;
 254                 valid_bits &= ~msk;
 255                 pvr2_ctrl_get_valname(cptr,msk,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 256                 bcnt += ccnt;
 257                 if (bcnt >= PAGE_SIZE) break;
 258                 buf[bcnt] = '\n';
 259                 bcnt++;
 260         }
 261         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",sfp,id);
 262         return bcnt;
 263 }
 264
 265 static int store_val_any(int id,int customfl,struct pvr2_sysfs *sfp,
 266                          const char *buf,unsigned int count)
 267 {
 268         struct pvr2_ctrl *cptr;
 269         int ret;
 270         int mask,val;
 271
 272         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 273         if (customfl) {
 274                 ret = pvr2_ctrl_custom_sym_to_value(cptr,buf,count,&mask,&val);
 275         } else {
 276                 ret = pvr2_ctrl_sym_to_value(cptr,buf,count,&mask,&val);
 277         }
 278         if (ret < 0) return ret;
 279         ret = pvr2_ctrl_set_mask_value(cptr,mask,val);
 280         pvr2_hdw_commit_ctl(sfp->channel.hdw);
 281         return ret;
 282 }
 283
 284 static ssize_t store_val_norm(int id,struct device *class_dev,
 285                              const char *buf,size_t count)
 286 {
 287         struct pvr2_sysfs *sfp;
 288         int ret;
 289         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 290         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
 291                          sfp,id,(int)count,buf);
 292         ret = store_val_any(id,0,sfp,buf,count);
 293         if (!ret) ret = count;
 294         return ret;
 295 }
 296
 297 static ssize_t store_val_custom(int id,struct device *class_dev,
 298                                 const char *buf,size_t count)
 299 {
 300         struct pvr2_sysfs *sfp;
 301         int ret;
 302         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 303         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
 304                          sfp,id,(int)count,buf);
 305         ret = store_val_any(id,1,sfp,buf,count);
 306         if (!ret) ret = count;
 307         return ret;
 308 }
 309
 310 /*
 311   Mike Isely <isely@pobox.com> 30-April-2005
 312
 313   This next batch of horrible preprocessor hackery is needed because the
 314   kernel's device_attribute mechanism fails to pass the actual
 315   attribute through to the show / store functions, which means we have no
 316   way to package up any attribute-specific parameters, like for example the
 317   control id.  So we work around this brain-damage by encoding the control
 318   id into the show / store functions themselves and pick the function based
 319   on the control id we're setting up.  These macros try to ease the pain.
 320   Yuck.
 321 */
 322
 323 #define CREATE_SHOW_INSTANCE(sf_name,ctl_id) \
 324 static ssize_t sf_name##_##ctl_id(struct device *class_dev, \
 325 struct device_attribute *attr, char *buf) \
 326 { return sf_name(ctl_id,class_dev,buf); }
 327
 328 #define CREATE_STORE_INSTANCE(sf_name,ctl_id) \
 329 static ssize_t sf_name##_##ctl_id(struct device *class_dev, \
 330 struct device_attribute *attr, const char *buf, size_t count) \
 331 { return sf_name(ctl_id,class_dev,buf,count); }
 332
 333 #define CREATE_BATCH(ctl_id) \
 334 CREATE_SHOW_INSTANCE(show_name,ctl_id) \
 335 CREATE_SHOW_INSTANCE(show_type,ctl_id) \
 336 CREATE_SHOW_INSTANCE(show_min,ctl_id) \
 337 CREATE_SHOW_INSTANCE(show_max,ctl_id) \
 338 CREATE_SHOW_INSTANCE(show_val_norm,ctl_id) \
 339 CREATE_SHOW_INSTANCE(show_val_custom,ctl_id) \
 340 CREATE_SHOW_INSTANCE(show_enum,ctl_id) \
 341 CREATE_SHOW_INSTANCE(show_bits,ctl_id) \
 342 CREATE_STORE_INSTANCE(store_val_norm,ctl_id) \
 343 CREATE_STORE_INSTANCE(store_val_custom,ctl_id) \
 344
 345 CREATE_BATCH(0)
 346 CREATE_BATCH(1)
 347 CREATE_BATCH(2)
 348 CREATE_BATCH(3)
 349 CREATE_BATCH(4)
 350 CREATE_BATCH(5)
 351 CREATE_BATCH(6)
 352 CREATE_BATCH(7)
 353 CREATE_BATCH(8)
 354 CREATE_BATCH(9)
 355 CREATE_BATCH(10)
 356 CREATE_BATCH(11)
 357 CREATE_BATCH(12)
 358 CREATE_BATCH(13)
 359 CREATE_BATCH(14)
 360 CREATE_BATCH(15)
 361 CREATE_BATCH(16)
 362 CREATE_BATCH(17)
 363 CREATE_BATCH(18)
 364 CREATE_BATCH(19)
 365 CREATE_BATCH(20)
 366 CREATE_BATCH(21)
 367 CREATE_BATCH(22)
 368 CREATE_BATCH(23)
 369 CREATE_BATCH(24)
 370 CREATE_BATCH(25)
 371 CREATE_BATCH(26)
 372 CREATE_BATCH(27)
 373 CREATE_BATCH(28)
 374 CREATE_BATCH(29)
 375 CREATE_BATCH(30)
 376 CREATE_BATCH(31)
 377 CREATE_BATCH(32)
 378 CREATE_BATCH(33)
 379 CREATE_BATCH(34)
 380 CREATE_BATCH(35)
 381 CREATE_BATCH(36)
 382 CREATE_BATCH(37)
 383 CREATE_BATCH(38)
 384 CREATE_BATCH(39)
 385 CREATE_BATCH(40)
 386 CREATE_BATCH(41)
 387 CREATE_BATCH(42)
 388 CREATE_BATCH(43)
 389 CREATE_BATCH(44)
 390 CREATE_BATCH(45)
 391 CREATE_BATCH(46)
 392 CREATE_BATCH(47)
 393 CREATE_BATCH(48)
 394 CREATE_BATCH(49)
 395 CREATE_BATCH(50)
 396 CREATE_BATCH(51)
 397 CREATE_BATCH(52)
 398 CREATE_BATCH(53)
 399 CREATE_BATCH(54)
 400 CREATE_BATCH(55)
 401 CREATE_BATCH(56)
 402 CREATE_BATCH(57)
 403 CREATE_BATCH(58)
 404 CREATE_BATCH(59)
 405
 406 struct pvr2_sysfs_func_set {
 407         ssize_t (*show_name)(struct device *,
 408                              struct device_attribute *attr, char *);
 409         ssize_t (*show_type)(struct device *,
 410                              struct device_attribute *attr, char *);
 411         ssize_t (*show_min)(struct device *,
 412                             struct device_attribute *attr, char *);
 413         ssize_t (*show_max)(struct device *,
 414                             struct device_attribute *attr, char *);
 415         ssize_t (*show_enum)(struct device *,
 416                              struct device_attribute *attr, char *);
 417         ssize_t (*show_bits)(struct device *,
 418                              struct device_attribute *attr, char *);
 419         ssize_t (*show_val_norm)(struct device *,
 420                                  struct device_attribute *attr, char *);
 421         ssize_t (*store_val_norm)(struct device *,
 422                                   struct device_attribute *attr,
 423                                   const char *,size_t);
 424         ssize_t (*show_val_custom)(struct device *,
 425                                    struct device_attribute *attr, char *);
 426         ssize_t (*store_val_custom)(struct device *,
 427                                     struct device_attribute *attr,
 428                                     const char *,size_t);
 429 };
 430
 431 #define INIT_BATCH(ctl_id) \
 432 [ctl_id] = { \
 433     .show_name = show_name_##ctl_id, \
 434     .show_type = show_type_##ctl_id, \
 435     .show_min = show_min_##ctl_id, \
 436     .show_max = show_max_##ctl_id, \
 437     .show_enum = show_enum_##ctl_id, \
 438     .show_bits = show_bits_##ctl_id, \
 439     .show_val_norm = show_val_norm_##ctl_id, \
 440     .store_val_norm = store_val_norm_##ctl_id, \
 441     .show_val_custom = show_val_custom_##ctl_id, \
 442     .store_val_custom = store_val_custom_##ctl_id, \
 443 } \
 444
 445 static struct pvr2_sysfs_func_set funcs[] = {
 446         INIT_BATCH(0),
 447         INIT_BATCH(1),
 448         INIT_BATCH(2),
 449         INIT_BATCH(3),
 450         INIT_BATCH(4),
 451         INIT_BATCH(5),
 452         INIT_BATCH(6),
 453         INIT_BATCH(7),
 454         INIT_BATCH(8),
 455         INIT_BATCH(9),
 456         INIT_BATCH(10),
 457         INIT_BATCH(11),
 458         INIT_BATCH(12),
 459         INIT_BATCH(13),
 460         INIT_BATCH(14),
 461         INIT_BATCH(15),
 462         INIT_BATCH(16),
 463         INIT_BATCH(17),
 464         INIT_BATCH(18),
 465         INIT_BATCH(19),
 466         INIT_BATCH(20),
 467         INIT_BATCH(21),
 468         INIT_BATCH(22),
 469         INIT_BATCH(23),
 470         INIT_BATCH(24),
 471         INIT_BATCH(25),
 472         INIT_BATCH(26),
 473         INIT_BATCH(27),
 474         INIT_BATCH(28),
 475         INIT_BATCH(29),
 476         INIT_BATCH(30),
 477         INIT_BATCH(31),
 478         INIT_BATCH(32),
 479         INIT_BATCH(33),
 480         INIT_BATCH(34),
 481         INIT_BATCH(35),
 482         INIT_BATCH(36),
 483         INIT_BATCH(37),
 484         INIT_BATCH(38),
 485         INIT_BATCH(39),
 486         INIT_BATCH(40),
 487         INIT_BATCH(41),
 488         INIT_BATCH(42),
 489         INIT_BATCH(43),
 490         INIT_BATCH(44),
 491         INIT_BATCH(45),
 492         INIT_BATCH(46),
 493         INIT_BATCH(47),
 494         INIT_BATCH(48),
 495         INIT_BATCH(49),
 496         INIT_BATCH(50),
 497         INIT_BATCH(51),
 498         INIT_BATCH(52),
 499         INIT_BATCH(53),
 500         INIT_BATCH(54),
 501         INIT_BATCH(55),
 502         INIT_BATCH(56),
 503         INIT_BATCH(57),
 504         INIT_BATCH(58),
 505         INIT_BATCH(59),
 506 };
 507
 508
 509 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 510 {
 511         struct pvr2_sysfs_ctl_item *cip;
 512         struct pvr2_sysfs_func_set *fp;
 513         struct pvr2_ctrl *cptr;
 514         unsigned int cnt,acnt;
 515         int ret;
 516
 517         if ((ctl_id < 0) || (ctl_id >= ARRAY_SIZE(funcs))) {
 518                 return;
 519         }
 520
 521         fp = funcs + ctl_id;
 522         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 523         if (!cptr) return;
 524
 525         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
 526         if (!cip) return;
 527         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 528
 529         cip->cptr = cptr;
 530
 531         cip->chptr = sfp;
 532         cip->item_next = NULL;
 533         if (sfp->item_last) {
 534                 sfp->item_last->item_next = cip;
 535         } else {
 536                 sfp->item_first = cip;
 537         }
 538         sfp->item_last = cip;
 539
 540         cip->attr_name.attr.name = "name";
 541         cip->attr_name.attr.mode = S_IRUGO;
 542         cip->attr_name.show = fp->show_name;
 543
 544         cip->attr_type.attr.name = "type";
 545         cip->attr_type.attr.mode = S_IRUGO;
 546         cip->attr_type.show = fp->show_type;
 547
 548         cip->attr_min.attr.name = "min_val";
 549         cip->attr_min.attr.mode = S_IRUGO;
 550         cip->attr_min.show = fp->show_min;
 551
 552         cip->attr_max.attr.name = "max_val";
 553         cip->attr_max.attr.mode = S_IRUGO;
 554         cip->attr_max.show = fp->show_max;
 555
 556         cip->attr_val.attr.name = "cur_val";
 557         cip->attr_val.attr.mode = S_IRUGO;
 558
 559         cip->attr_custom.attr.name = "custom_val";
 560         cip->attr_custom.attr.mode = S_IRUGO;
 561
 562         cip->attr_enum.attr.name = "enum_val";
 563         cip->attr_enum.attr.mode = S_IRUGO;
 564         cip->attr_enum.show = fp->show_enum;
 565
 566         cip->attr_bits.attr.name = "bit_val";
 567         cip->attr_bits.attr.mode = S_IRUGO;
 568         cip->attr_bits.show = fp->show_bits;
 569
 570         if (pvr2_ctrl_is_writable(cptr)) {
 571                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 572                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 573         }
 574
 575         acnt = 0;
 576         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 577         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 578         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 579         cip->attr_val.show = fp->show_val_norm;
 580         cip->attr_val.store = fp->store_val_norm;
 581         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 582                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 583                 cip->attr_custom.show = fp->show_val_custom;
 584                 cip->attr_custom.store = fp->store_val_custom;
 585         }
 586         switch (pvr2_ctrl_get_type(cptr)) {
 587         case pvr2_ctl_enum:
 588                 // Control is an enumeration
 589                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 590                 break;
 591         case pvr2_ctl_int:
 592                 // Control is an integer
 593                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 594                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 595                 break;
 596         case pvr2_ctl_bitmask:
 597                 // Control is an bitmask
 598                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 599                 break;
 600         default: break;
 601         }
 602
 603         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 604                         pvr2_ctrl_get_name(cptr));
 605         cip->name[cnt] = 0;
 606         cip->grp.name = cip->name;
 607         cip->grp.attrs = cip->attr_gen;
 608
 609         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 610         if (ret) {
 611                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 612                            "sysfs_create_group error: %d",
 613                            ret);
 614                 return;
 615         }
 616         cip->created_ok = !0;
 617 }
 618
 619 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 620 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
 621                               char *);
 622 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
 623                              char *);
 624 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
 625                               const char *, size_t count);
 626
 627 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 628 {
 629         struct pvr2_sysfs_debugifc *dip;
 630         int ret;
 631
 632         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
 633         if (!dip) return;
 634         dip->attr_debugcmd.attr.name = "debugcmd";
 635         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 636         dip->attr_debugcmd.show = debugcmd_show;
 637         dip->attr_debugcmd.store = debugcmd_store;
 638         dip->attr_debuginfo.attr.name = "debuginfo";
 639         dip->attr_debuginfo.attr.mode = S_IRUGO;
 640         dip->attr_debuginfo.show = debuginfo_show;
 641         sfp->debugifc = dip;
 642         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 643         if (ret < 0) {
 644                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 645                            "device_create_file error: %d",
 646                            ret);
 647         } else {
 648                 dip->debugcmd_created_ok = !0;
 649         }
 650         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 651         if (ret < 0) {
 652                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 653                            "device_create_file error: %d",
 654                            ret);
 655         } else {
 656                 dip->debuginfo_created_ok = !0;
 657         }
 658 }
 659
 660
 661 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 662 {
 663         if (!sfp->debugifc) return;
 664         if (sfp->debugifc->debuginfo_created_ok) {
 665                 device_remove_file(sfp->class_dev,
 666                                          &sfp->debugifc->attr_debuginfo);
 667         }
 668         if (sfp->debugifc->debugcmd_created_ok) {
 669                 device_remove_file(sfp->class_dev,
 670                                          &sfp->debugifc->attr_debugcmd);
 671         }
 672         kfree(sfp->debugifc);
 673         sfp->debugifc = NULL;
 674 }
 675 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 676
 677
 678 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 679 {
 680         unsigned int idx,cnt;
 681         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 682         for (idx = 0; idx < cnt; idx++) {
 683                 pvr2_sysfs_add_control(sfp,idx);
 684         }
 685 }
 686
 687
 688 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 689 {
 690         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 691         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 692                 cip2 = cip1->item_next;
 693                 if (cip1->created_ok) {
 694                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 695                 }
 696                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 697                 kfree(cip1);
 698         }
 699 }
 700
 701
 702 static void pvr2_sysfs_class_release(struct class *class)
 703 {
 704         struct pvr2_sysfs_class *clp;
 705         clp = container_of(class,struct pvr2_sysfs_class,class);
 706         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 707         kfree(clp);
 708 }
 709
 710
 711 static void pvr2_sysfs_release(struct device *class_dev)
 712 {
 713         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 714         kfree(class_dev);
 715 }
 716
 717
 718 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 719 {
 720         if (!sfp->class_dev) return;
 721 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 722         pvr2_sysfs_tear_down_debugifc(sfp);
 723 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 724         pvr2_sysfs_tear_down_controls(sfp);
 725         if (sfp->hdw_desc_created_ok) {
 726                 device_remove_file(sfp->class_dev,
 727                                    &sfp->attr_hdw_desc);
 728         }
 729         if (sfp->hdw_name_created_ok) {
 730                 device_remove_file(sfp->class_dev,
 731                                    &sfp->attr_hdw_name);
 732         }
 733         if (sfp->bus_info_created_ok) {
 734                 device_remove_file(sfp->class_dev,
 735                                          &sfp->attr_bus_info);
 736         }
 737         if (sfp->v4l_minor_number_created_ok) {
 738                 device_remove_file(sfp->class_dev,
 739                                          &sfp->attr_v4l_minor_number);
 740         }
 741         if (sfp->v4l_radio_minor_number_created_ok) {
 742                 device_remove_file(sfp->class_dev,
 743                                          &sfp->attr_v4l_radio_minor_number);
 744         }
 745         if (sfp->unit_number_created_ok) {
 746                 device_remove_file(sfp->class_dev,
 747                                          &sfp->attr_unit_number);
 748         }
 749         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 750         sfp->class_dev->driver_data = NULL;
 751         device_unregister(sfp->class_dev);
 752         sfp->class_dev = NULL;
 753 }
 754
 755
 756 static ssize_t v4l_minor_number_show(struct device *class_dev,
 757                                      struct device_attribute *attr, char *buf)
 758 {
 759         struct pvr2_sysfs *sfp;
 760         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 761         if (!sfp) return -EINVAL;
 762         return scnprintf(buf,PAGE_SIZE,"%d\n",
 763                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 764                                                        pvr2_v4l_type_video));
 765 }
 766
 767
 768 static ssize_t bus_info_show(struct device *class_dev,
 769                              struct device_attribute *attr, char *buf)
 770 {
 771         struct pvr2_sysfs *sfp;
 772         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 773         if (!sfp) return -EINVAL;
 774         return scnprintf(buf,PAGE_SIZE,"%s\n",
 775                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
 776 }
 777
 778
 779 static ssize_t hdw_name_show(struct device *class_dev,
 780                              struct device_attribute *attr, char *buf)
 781 {
 782         struct pvr2_sysfs *sfp;
 783         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 784         if (!sfp) return -EINVAL;
 785         return scnprintf(buf,PAGE_SIZE,"%s\n",
 786                          pvr2_hdw_get_type(sfp->channel.hdw));
 787 }
 788
 789
 790 static ssize_t hdw_desc_show(struct device *class_dev,
 791                              struct device_attribute *attr, char *buf)
 792 {
 793         struct pvr2_sysfs *sfp;
 794         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 795         if (!sfp) return -EINVAL;
 796         return scnprintf(buf,PAGE_SIZE,"%s\n",
 797                          pvr2_hdw_get_desc(sfp->channel.hdw));
 798 }
 799
 800
 801 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
 802                                            struct device_attribute *attr,
 803                                            char *buf)
 804 {
 805         struct pvr2_sysfs *sfp;
 806         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 807         if (!sfp) return -EINVAL;
 808         return scnprintf(buf,PAGE_SIZE,"%d\n",
 809                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 810                                                        pvr2_v4l_type_radio));
 811 }
 812
 813
 814 static ssize_t unit_number_show(struct device *class_dev,
 815                                 struct device_attribute *attr, char *buf)
 816 {
 817         struct pvr2_sysfs *sfp;
 818         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 819         if (!sfp) return -EINVAL;
 820         return scnprintf(buf,PAGE_SIZE,"%d\n",
 821                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 822 }
 823
 824
 825 static void class_dev_create(struct pvr2_sysfs *sfp,
 826                              struct pvr2_sysfs_class *class_ptr)
 827 {
 828         struct usb_device *usb_dev;
 829         struct device *class_dev;
 830         int ret;
 831
 832         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 833         if (!usb_dev) return;
 834         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 835         if (!class_dev) return;
 836
 837         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 838
 839         class_dev->class = &class_ptr->class;
 840         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
 841                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "sn-%lu",
 842                          pvr2_hdw_get_sn(sfp->channel.hdw));
 843         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
 844                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "unit-%c",
 845                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
 846         } else {
 847                 kfree(class_dev);
 848                 return;
 849         }
 850
 851         class_dev->parent = &usb_dev->dev;
 852
 853         sfp->class_dev = class_dev;
 854         class_dev->driver_data = sfp;
 855         ret = device_register(class_dev);
 856         if (ret) {
 857                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 858                            "device_register failed");
 859                 kfree(class_dev);
 860                 return;
 861         }
 862
 863         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 864         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 865         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 866         sfp->attr_v4l_minor_number.store = NULL;
 867         ret = device_create_file(sfp->class_dev,
 868                                        &sfp->attr_v4l_minor_number);
 869         if (ret < 0) {
 870                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 871                            "device_create_file error: %d",
 872                            ret);
 873         } else {
 874                 sfp->v4l_minor_number_created_ok = !0;
 875         }
 876
 877         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 878         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 879         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 880         sfp->attr_v4l_radio_minor_number.store = NULL;
 881         ret = device_create_file(sfp->class_dev,
 882                                        &sfp->attr_v4l_radio_minor_number);
 883         if (ret < 0) {
 884                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 885                            "device_create_file error: %d",
 886                            ret);
 887         } else {
 888                 sfp->v4l_radio_minor_number_created_ok = !0;
 889         }
 890
 891         sfp->attr_unit_number.attr.name = "unit_number";
 892         sfp->attr_unit_number.attr.mode = S_IRUGO;
 893         sfp->attr_unit_number.show = unit_number_show;
 894         sfp->attr_unit_number.store = NULL;
 895         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 896         if (ret < 0) {
 897                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 898                            "device_create_file error: %d",
 899                            ret);
 900         } else {
 901                 sfp->unit_number_created_ok = !0;
 902         }
 903
 904         sfp->attr_bus_info.attr.name = "bus_info_str";
 905         sfp->attr_bus_info.attr.mode = S_IRUGO;
 906         sfp->attr_bus_info.show = bus_info_show;
 907         sfp->attr_bus_info.store = NULL;
 908         ret = device_create_file(sfp->class_dev,
 909                                        &sfp->attr_bus_info);
 910         if (ret < 0) {
 911                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 912                            "device_create_file error: %d",
 913                            ret);
 914         } else {
 915                 sfp->bus_info_created_ok = !0;
 916         }
 917
 918         sfp->attr_hdw_name.attr.name = "device_hardware_type";
 919         sfp->attr_hdw_name.attr.mode = S_IRUGO;
 920         sfp->attr_hdw_name.show = hdw_name_show;
 921         sfp->attr_hdw_name.store = NULL;
 922         ret = device_create_file(sfp->class_dev,
 923                                  &sfp->attr_hdw_name);
 924         if (ret < 0) {
 925                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 926                            "device_create_file error: %d",
 927                            ret);
 928         } else {
 929                 sfp->hdw_name_created_ok = !0;
 930         }
 931
 932         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
 933         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
 934         sfp->attr_hdw_desc.show = hdw_desc_show;
 935         sfp->attr_hdw_desc.store = NULL;
 936         ret = device_create_file(sfp->class_dev,
 937                                  &sfp->attr_hdw_desc);
 938         if (ret < 0) {
 939                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 940                            "device_create_file error: %d",
 941                            ret);
 942         } else {
 943                 sfp->hdw_desc_created_ok = !0;
 944         }
 945
 946         pvr2_sysfs_add_controls(sfp);
 947 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 948         pvr2_sysfs_add_debugifc(sfp);
 949 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 950 }
 951
 952
 953 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 954 {
 955         struct pvr2_sysfs *sfp;
 956         sfp = container_of(chp,struct pvr2_sysfs,channel);
 957         if (!sfp->channel.mc_head->disconnect_flag) return;
 958         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 959         class_dev_destroy(sfp);
 960         pvr2_channel_done(&sfp->channel);
 961         kfree(sfp);
 962 }
 963
 964
 965 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 966                                      struct pvr2_sysfs_class *class_ptr)
 967 {
 968         struct pvr2_sysfs *sfp;
 969         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 970         if (!sfp) return sfp;
 971         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 972         pvr2_channel_init(&sfp->channel,mp);
 973         sfp->channel.check_func = pvr2_sysfs_internal_check;
 974
 975         class_dev_create(sfp,class_ptr);
 976         return sfp;
 977 }
 978
 979
 980
 981 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 982 {
 983         struct pvr2_sysfs_class *clp;
 984         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 985         if (!clp) return clp;
 986         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
 987         clp->class.name = "pvrusb2";
 988         clp->class.class_release = pvr2_sysfs_class_release;
 989         clp->class.dev_release = pvr2_sysfs_release;
 990         if (class_register(&clp->class)) {
 991                 pvr2_sysfs_trace(
 992                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 993                 kfree(clp);
 994                 clp = NULL;
 995         }
 996         return clp;
 997 }
 998
 999
1000 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
1001 {
1002         class_unregister(&clp->class);
1003 }
1004
1005
1006 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
1007 static ssize_t debuginfo_show(struct device *class_dev,
1008                               struct device_attribute *attr, char *buf)
1009 {
1010         struct pvr2_sysfs *sfp;
1011         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
1012         if (!sfp) return -EINVAL;
1013         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
1014         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
1015 }
1016
1017
1018 static ssize_t debugcmd_show(struct device *class_dev,
1019                              struct device_attribute *attr, char *buf)
1020 {
1021         struct pvr2_sysfs *sfp;
1022         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
1023         if (!sfp) return -EINVAL;
1024         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
1025 }
1026
1027
1028 static ssize_t debugcmd_store(struct device *class_dev,
1029                               struct device_attribute *attr,
1030                               const char *buf, size_t count)
1031 {
1032         struct pvr2_sysfs *sfp;
1033         int ret;
1034
1035         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
1036         if (!sfp) return -EINVAL;
1037
1038         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
1039         if (ret < 0) return ret;
1040         return count;
1041 }
1042 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
1043
1044
1045 /*
1046   Stuff for Emacs to see, in order to encourage consistent editing style:
1047   *** Local Variables: ***
1048   *** mode: c ***
1049   *** fill-column: 75 ***
1050   *** tab-width: 8 ***
1051   *** c-basic-offset: 8 ***
1052   *** End: ***
1053   */