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         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 };
  51
  52 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  53 struct pvr2_sysfs_debugifc {
  54         struct device_attribute attr_debugcmd;
  55         struct device_attribute attr_debuginfo;
  56         int debugcmd_created_ok;
  57         int debuginfo_created_ok;
  58 };
  59 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  60
  61 struct pvr2_sysfs_ctl_item {
  62         struct device_attribute attr_name;
  63         struct device_attribute attr_type;
  64         struct device_attribute attr_min;
  65         struct device_attribute attr_max;
  66         struct device_attribute attr_enum;
  67         struct device_attribute attr_bits;
  68         struct device_attribute attr_val;
  69         struct device_attribute attr_custom;
  70         struct pvr2_ctrl *cptr;
  71         struct pvr2_sysfs *chptr;
  72         struct pvr2_sysfs_ctl_item *item_next;
  73         struct attribute *attr_gen[7];
  74         struct attribute_group grp;
  75         int created_ok;
  76         char name[80];
  77 };
  78
  79 struct pvr2_sysfs_class {
  80         struct class class;
  81 };
  82
  83 static ssize_t show_name(int id,struct device *class_dev,char *buf)
  84 {
  85         struct pvr2_ctrl *cptr;
  86         struct pvr2_sysfs *sfp;
  87         const char *name;
  88
  89         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
  90         if (!sfp) return -EINVAL;
  91         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
  92         if (!cptr) return -EINVAL;
  93
  94         name = pvr2_ctrl_get_desc(cptr);
  95         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",sfp,id,name);
  96
  97         if (!name) return -EINVAL;
  98
  99         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
 100 }
 101
 102 static ssize_t show_type(int id,struct device *class_dev,char *buf)
 103 {
 104         struct pvr2_ctrl *cptr;
 105         struct pvr2_sysfs *sfp;
 106         const char *name;
 107         enum pvr2_ctl_type tp;
 108
 109         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 110         if (!sfp) return -EINVAL;
 111         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 112         if (!cptr) return -EINVAL;
 113
 114         tp = pvr2_ctrl_get_type(cptr);
 115         switch (tp) {
 116         case pvr2_ctl_int: name = "integer"; break;
 117         case pvr2_ctl_enum: name = "enum"; break;
 118         case pvr2_ctl_bitmask: name = "bitmask"; break;
 119         case pvr2_ctl_bool: name = "boolean"; break;
 120         default: name = "?"; break;
 121         }
 122         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",sfp,id,name);
 123
 124         if (!name) return -EINVAL;
 125
 126         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
 127 }
 128
 129 static ssize_t show_min(int id,struct device *class_dev,char *buf)
 130 {
 131         struct pvr2_ctrl *cptr;
 132         struct pvr2_sysfs *sfp;
 133         long val;
 134
 135         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 136         if (!sfp) return -EINVAL;
 137         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 138         if (!cptr) return -EINVAL;
 139         val = pvr2_ctrl_get_min(cptr);
 140
 141         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",sfp,id,val);
 142
 143         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 144 }
 145
 146 static ssize_t show_max(int id,struct device *class_dev,char *buf)
 147 {
 148         struct pvr2_ctrl *cptr;
 149         struct pvr2_sysfs *sfp;
 150         long val;
 151
 152         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 153         if (!sfp) return -EINVAL;
 154         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 155         if (!cptr) return -EINVAL;
 156         val = pvr2_ctrl_get_max(cptr);
 157
 158         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",sfp,id,val);
 159
 160         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 161 }
 162
 163 static ssize_t show_val_norm(int id,struct device *class_dev,char *buf)
 164 {
 165         struct pvr2_ctrl *cptr;
 166         struct pvr2_sysfs *sfp;
 167         int val,ret;
 168         unsigned int cnt = 0;
 169
 170         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 171         if (!sfp) return -EINVAL;
 172         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 173         if (!cptr) return -EINVAL;
 174
 175         ret = pvr2_ctrl_get_value(cptr,&val);
 176         if (ret < 0) return ret;
 177
 178         ret = pvr2_ctrl_value_to_sym(cptr,~0,val,
 179                                      buf,PAGE_SIZE-1,&cnt);
 180
 181         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
 182                          sfp,id,cnt,buf,val);
 183         buf[cnt] = '\n';
 184         return cnt+1;
 185 }
 186
 187 static ssize_t show_val_custom(int id,struct device *class_dev,char *buf)
 188 {
 189         struct pvr2_ctrl *cptr;
 190         struct pvr2_sysfs *sfp;
 191         int val,ret;
 192         unsigned int cnt = 0;
 193
 194         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 195         if (!sfp) return -EINVAL;
 196         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 197         if (!cptr) return -EINVAL;
 198
 199         ret = pvr2_ctrl_get_value(cptr,&val);
 200         if (ret < 0) return ret;
 201
 202         ret = pvr2_ctrl_custom_value_to_sym(cptr,~0,val,
 203                                             buf,PAGE_SIZE-1,&cnt);
 204
 205         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
 206                          sfp,id,cnt,buf,val);
 207         buf[cnt] = '\n';
 208         return cnt+1;
 209 }
 210
 211 static ssize_t show_enum(int id,struct device *class_dev,char *buf)
 212 {
 213         struct pvr2_ctrl *cptr;
 214         struct pvr2_sysfs *sfp;
 215         long val;
 216         unsigned int bcnt,ccnt,ecnt;
 217
 218         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 219         if (!sfp) return -EINVAL;
 220         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 221         if (!cptr) return -EINVAL;
 222         ecnt = pvr2_ctrl_get_cnt(cptr);
 223         bcnt = 0;
 224         for (val = 0; val < ecnt; val++) {
 225                 pvr2_ctrl_get_valname(cptr,val,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 226                 if (!ccnt) continue;
 227                 bcnt += ccnt;
 228                 if (bcnt >= PAGE_SIZE) break;
 229                 buf[bcnt] = '\n';
 230                 bcnt++;
 231         }
 232         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",sfp,id);
 233         return bcnt;
 234 }
 235
 236 static ssize_t show_bits(int id,struct device *class_dev,char *buf)
 237 {
 238         struct pvr2_ctrl *cptr;
 239         struct pvr2_sysfs *sfp;
 240         int valid_bits,msk;
 241         unsigned int bcnt,ccnt;
 242
 243         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 244         if (!sfp) return -EINVAL;
 245         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 246         if (!cptr) return -EINVAL;
 247         valid_bits = pvr2_ctrl_get_mask(cptr);
 248         bcnt = 0;
 249         for (msk = 1; valid_bits; msk <<= 1) {
 250                 if (!(msk & valid_bits)) continue;
 251                 valid_bits &= ~msk;
 252                 pvr2_ctrl_get_valname(cptr,msk,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 253                 bcnt += ccnt;
 254                 if (bcnt >= PAGE_SIZE) break;
 255                 buf[bcnt] = '\n';
 256                 bcnt++;
 257         }
 258         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",sfp,id);
 259         return bcnt;
 260 }
 261
 262 static int store_val_any(int id,int customfl,struct pvr2_sysfs *sfp,
 263                          const char *buf,unsigned int count)
 264 {
 265         struct pvr2_ctrl *cptr;
 266         int ret;
 267         int mask,val;
 268
 269         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 270         if (customfl) {
 271                 ret = pvr2_ctrl_custom_sym_to_value(cptr,buf,count,&mask,&val);
 272         } else {
 273                 ret = pvr2_ctrl_sym_to_value(cptr,buf,count,&mask,&val);
 274         }
 275         if (ret < 0) return ret;
 276         ret = pvr2_ctrl_set_mask_value(cptr,mask,val);
 277         pvr2_hdw_commit_ctl(sfp->channel.hdw);
 278         return ret;
 279 }
 280
 281 static ssize_t store_val_norm(int id,struct device *class_dev,
 282                              const char *buf,size_t count)
 283 {
 284         struct pvr2_sysfs *sfp;
 285         int ret;
 286         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 287         ret = store_val_any(id,0,sfp,buf,count);
 288         if (!ret) ret = count;
 289         return ret;
 290 }
 291
 292 static ssize_t store_val_custom(int id,struct device *class_dev,
 293                                 const char *buf,size_t count)
 294 {
 295         struct pvr2_sysfs *sfp;
 296         int ret;
 297         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 298         ret = store_val_any(id,1,sfp,buf,count);
 299         if (!ret) ret = count;
 300         return ret;
 301 }
 302
 303 /*
 304   Mike Isely <isely@pobox.com> 30-April-2005
 305
 306   This next batch of horrible preprocessor hackery is needed because the
 307   kernel's device_attribute mechanism fails to pass the actual
 308   attribute through to the show / store functions, which means we have no
 309   way to package up any attribute-specific parameters, like for example the
 310   control id.  So we work around this brain-damage by encoding the control
 311   id into the show / store functions themselves and pick the function based
 312   on the control id we're setting up.  These macros try to ease the pain.
 313   Yuck.
 314 */
 315
 316 #define CREATE_SHOW_INSTANCE(sf_name,ctl_id) \
 317 static ssize_t sf_name##_##ctl_id(struct device *class_dev, \
 318 struct device_attribute *attr, char *buf) \
 319 { return sf_name(ctl_id,class_dev,buf); }
 320
 321 #define CREATE_STORE_INSTANCE(sf_name,ctl_id) \
 322 static ssize_t sf_name##_##ctl_id(struct device *class_dev, \
 323 struct device_attribute *attr, const char *buf, size_t count) \
 324 { return sf_name(ctl_id,class_dev,buf,count); }
 325
 326 #define CREATE_BATCH(ctl_id) \
 327 CREATE_SHOW_INSTANCE(show_name,ctl_id) \
 328 CREATE_SHOW_INSTANCE(show_type,ctl_id) \
 329 CREATE_SHOW_INSTANCE(show_min,ctl_id) \
 330 CREATE_SHOW_INSTANCE(show_max,ctl_id) \
 331 CREATE_SHOW_INSTANCE(show_val_norm,ctl_id) \
 332 CREATE_SHOW_INSTANCE(show_val_custom,ctl_id) \
 333 CREATE_SHOW_INSTANCE(show_enum,ctl_id) \
 334 CREATE_SHOW_INSTANCE(show_bits,ctl_id) \
 335 CREATE_STORE_INSTANCE(store_val_norm,ctl_id) \
 336 CREATE_STORE_INSTANCE(store_val_custom,ctl_id) \
 337
 338 CREATE_BATCH(0)
 339 CREATE_BATCH(1)
 340 CREATE_BATCH(2)
 341 CREATE_BATCH(3)
 342 CREATE_BATCH(4)
 343 CREATE_BATCH(5)
 344 CREATE_BATCH(6)
 345 CREATE_BATCH(7)
 346 CREATE_BATCH(8)
 347 CREATE_BATCH(9)
 348 CREATE_BATCH(10)
 349 CREATE_BATCH(11)
 350 CREATE_BATCH(12)
 351 CREATE_BATCH(13)
 352 CREATE_BATCH(14)
 353 CREATE_BATCH(15)
 354 CREATE_BATCH(16)
 355 CREATE_BATCH(17)
 356 CREATE_BATCH(18)
 357 CREATE_BATCH(19)
 358 CREATE_BATCH(20)
 359 CREATE_BATCH(21)
 360 CREATE_BATCH(22)
 361 CREATE_BATCH(23)
 362 CREATE_BATCH(24)
 363 CREATE_BATCH(25)
 364 CREATE_BATCH(26)
 365 CREATE_BATCH(27)
 366 CREATE_BATCH(28)
 367 CREATE_BATCH(29)
 368 CREATE_BATCH(30)
 369 CREATE_BATCH(31)
 370 CREATE_BATCH(32)
 371 CREATE_BATCH(33)
 372 CREATE_BATCH(34)
 373 CREATE_BATCH(35)
 374 CREATE_BATCH(36)
 375 CREATE_BATCH(37)
 376 CREATE_BATCH(38)
 377 CREATE_BATCH(39)
 378 CREATE_BATCH(40)
 379 CREATE_BATCH(41)
 380 CREATE_BATCH(42)
 381 CREATE_BATCH(43)
 382 CREATE_BATCH(44)
 383 CREATE_BATCH(45)
 384 CREATE_BATCH(46)
 385 CREATE_BATCH(47)
 386 CREATE_BATCH(48)
 387 CREATE_BATCH(49)
 388 CREATE_BATCH(50)
 389 CREATE_BATCH(51)
 390 CREATE_BATCH(52)
 391 CREATE_BATCH(53)
 392 CREATE_BATCH(54)
 393 CREATE_BATCH(55)
 394 CREATE_BATCH(56)
 395 CREATE_BATCH(57)
 396 CREATE_BATCH(58)
 397 CREATE_BATCH(59)
 398
 399 struct pvr2_sysfs_func_set {
 400         ssize_t (*show_name)(struct device *,
 401                              struct device_attribute *attr, char *);
 402         ssize_t (*show_type)(struct device *,
 403                              struct device_attribute *attr, char *);
 404         ssize_t (*show_min)(struct device *,
 405                             struct device_attribute *attr, char *);
 406         ssize_t (*show_max)(struct device *,
 407                             struct device_attribute *attr, char *);
 408         ssize_t (*show_enum)(struct device *,
 409                              struct device_attribute *attr, char *);
 410         ssize_t (*show_bits)(struct device *,
 411                              struct device_attribute *attr, char *);
 412         ssize_t (*show_val_norm)(struct device *,
 413                                  struct device_attribute *attr, char *);
 414         ssize_t (*store_val_norm)(struct device *,
 415                                   struct device_attribute *attr,
 416                                   const char *,size_t);
 417         ssize_t (*show_val_custom)(struct device *,
 418                                    struct device_attribute *attr, char *);
 419         ssize_t (*store_val_custom)(struct device *,
 420                                     struct device_attribute *attr,
 421                                     const char *,size_t);
 422 };
 423
 424 #define INIT_BATCH(ctl_id) \
 425 [ctl_id] = { \
 426     .show_name = show_name_##ctl_id, \
 427     .show_type = show_type_##ctl_id, \
 428     .show_min = show_min_##ctl_id, \
 429     .show_max = show_max_##ctl_id, \
 430     .show_enum = show_enum_##ctl_id, \
 431     .show_bits = show_bits_##ctl_id, \
 432     .show_val_norm = show_val_norm_##ctl_id, \
 433     .store_val_norm = store_val_norm_##ctl_id, \
 434     .show_val_custom = show_val_custom_##ctl_id, \
 435     .store_val_custom = store_val_custom_##ctl_id, \
 436 } \
 437
 438 static struct pvr2_sysfs_func_set funcs[] = {
 439         INIT_BATCH(0),
 440         INIT_BATCH(1),
 441         INIT_BATCH(2),
 442         INIT_BATCH(3),
 443         INIT_BATCH(4),
 444         INIT_BATCH(5),
 445         INIT_BATCH(6),
 446         INIT_BATCH(7),
 447         INIT_BATCH(8),
 448         INIT_BATCH(9),
 449         INIT_BATCH(10),
 450         INIT_BATCH(11),
 451         INIT_BATCH(12),
 452         INIT_BATCH(13),
 453         INIT_BATCH(14),
 454         INIT_BATCH(15),
 455         INIT_BATCH(16),
 456         INIT_BATCH(17),
 457         INIT_BATCH(18),
 458         INIT_BATCH(19),
 459         INIT_BATCH(20),
 460         INIT_BATCH(21),
 461         INIT_BATCH(22),
 462         INIT_BATCH(23),
 463         INIT_BATCH(24),
 464         INIT_BATCH(25),
 465         INIT_BATCH(26),
 466         INIT_BATCH(27),
 467         INIT_BATCH(28),
 468         INIT_BATCH(29),
 469         INIT_BATCH(30),
 470         INIT_BATCH(31),
 471         INIT_BATCH(32),
 472         INIT_BATCH(33),
 473         INIT_BATCH(34),
 474         INIT_BATCH(35),
 475         INIT_BATCH(36),
 476         INIT_BATCH(37),
 477         INIT_BATCH(38),
 478         INIT_BATCH(39),
 479         INIT_BATCH(40),
 480         INIT_BATCH(41),
 481         INIT_BATCH(42),
 482         INIT_BATCH(43),
 483         INIT_BATCH(44),
 484         INIT_BATCH(45),
 485         INIT_BATCH(46),
 486         INIT_BATCH(47),
 487         INIT_BATCH(48),
 488         INIT_BATCH(49),
 489         INIT_BATCH(50),
 490         INIT_BATCH(51),
 491         INIT_BATCH(52),
 492         INIT_BATCH(53),
 493         INIT_BATCH(54),
 494         INIT_BATCH(55),
 495         INIT_BATCH(56),
 496         INIT_BATCH(57),
 497         INIT_BATCH(58),
 498         INIT_BATCH(59),
 499 };
 500
 501
 502 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 503 {
 504         struct pvr2_sysfs_ctl_item *cip;
 505         struct pvr2_sysfs_func_set *fp;
 506         struct pvr2_ctrl *cptr;
 507         unsigned int cnt,acnt;
 508         int ret;
 509
 510         if ((ctl_id < 0) || (ctl_id >= ARRAY_SIZE(funcs))) {
 511                 return;
 512         }
 513
 514         fp = funcs + ctl_id;
 515         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 516         if (!cptr) return;
 517
 518         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
 519         if (!cip) return;
 520         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 521
 522         cip->cptr = cptr;
 523
 524         cip->chptr = sfp;
 525         cip->item_next = NULL;
 526         if (sfp->item_last) {
 527                 sfp->item_last->item_next = cip;
 528         } else {
 529                 sfp->item_first = cip;
 530         }
 531         sfp->item_last = cip;
 532
 533         cip->attr_name.attr.name = "name";
 534         cip->attr_name.attr.mode = S_IRUGO;
 535         cip->attr_name.show = fp->show_name;
 536
 537         cip->attr_type.attr.name = "type";
 538         cip->attr_type.attr.mode = S_IRUGO;
 539         cip->attr_type.show = fp->show_type;
 540
 541         cip->attr_min.attr.name = "min_val";
 542         cip->attr_min.attr.mode = S_IRUGO;
 543         cip->attr_min.show = fp->show_min;
 544
 545         cip->attr_max.attr.name = "max_val";
 546         cip->attr_max.attr.mode = S_IRUGO;
 547         cip->attr_max.show = fp->show_max;
 548
 549         cip->attr_val.attr.name = "cur_val";
 550         cip->attr_val.attr.mode = S_IRUGO;
 551
 552         cip->attr_custom.attr.name = "custom_val";
 553         cip->attr_custom.attr.mode = S_IRUGO;
 554
 555         cip->attr_enum.attr.name = "enum_val";
 556         cip->attr_enum.attr.mode = S_IRUGO;
 557         cip->attr_enum.show = fp->show_enum;
 558
 559         cip->attr_bits.attr.name = "bit_val";
 560         cip->attr_bits.attr.mode = S_IRUGO;
 561         cip->attr_bits.show = fp->show_bits;
 562
 563         if (pvr2_ctrl_is_writable(cptr)) {
 564                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 565                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 566         }
 567
 568         acnt = 0;
 569         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 570         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 571         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 572         cip->attr_val.show = fp->show_val_norm;
 573         cip->attr_val.store = fp->store_val_norm;
 574         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 575                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 576                 cip->attr_custom.show = fp->show_val_custom;
 577                 cip->attr_custom.store = fp->store_val_custom;
 578         }
 579         switch (pvr2_ctrl_get_type(cptr)) {
 580         case pvr2_ctl_enum:
 581                 // Control is an enumeration
 582                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 583                 break;
 584         case pvr2_ctl_int:
 585                 // Control is an integer
 586                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 587                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 588                 break;
 589         case pvr2_ctl_bitmask:
 590                 // Control is an bitmask
 591                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 592                 break;
 593         default: break;
 594         }
 595
 596         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 597                         pvr2_ctrl_get_name(cptr));
 598         cip->name[cnt] = 0;
 599         cip->grp.name = cip->name;
 600         cip->grp.attrs = cip->attr_gen;
 601
 602         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 603         if (ret) {
 604                 printk(KERN_WARNING "%s: sysfs_create_group error: %d\n",
 605                        __FUNCTION__, ret);
 606                 return;
 607         }
 608         cip->created_ok = !0;
 609 }
 610
 611 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 612 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
 613                               char *);
 614 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
 615                              char *);
 616 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
 617                               const char *, size_t count);
 618
 619 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 620 {
 621         struct pvr2_sysfs_debugifc *dip;
 622         int ret;
 623
 624         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
 625         if (!dip) return;
 626         dip->attr_debugcmd.attr.name = "debugcmd";
 627         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 628         dip->attr_debugcmd.show = debugcmd_show;
 629         dip->attr_debugcmd.store = debugcmd_store;
 630         dip->attr_debuginfo.attr.name = "debuginfo";
 631         dip->attr_debuginfo.attr.mode = S_IRUGO;
 632         dip->attr_debuginfo.show = debuginfo_show;
 633         sfp->debugifc = dip;
 634         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 635         if (ret < 0) {
 636                 printk(KERN_WARNING "%s: device_create_file error: %d\n",
 637                        __FUNCTION__, ret);
 638         } else {
 639                 dip->debugcmd_created_ok = !0;
 640         }
 641         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 642         if (ret < 0) {
 643                 printk(KERN_WARNING "%s: device_create_file error: %d\n",
 644                        __FUNCTION__, ret);
 645         } else {
 646                 dip->debuginfo_created_ok = !0;
 647         }
 648 }
 649
 650
 651 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 652 {
 653         if (!sfp->debugifc) return;
 654         if (sfp->debugifc->debuginfo_created_ok) {
 655                 device_remove_file(sfp->class_dev,
 656                                          &sfp->debugifc->attr_debuginfo);
 657         }
 658         if (sfp->debugifc->debugcmd_created_ok) {
 659                 device_remove_file(sfp->class_dev,
 660                                          &sfp->debugifc->attr_debugcmd);
 661         }
 662         kfree(sfp->debugifc);
 663         sfp->debugifc = NULL;
 664 }
 665 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 666
 667
 668 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 669 {
 670         unsigned int idx,cnt;
 671         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 672         for (idx = 0; idx < cnt; idx++) {
 673                 pvr2_sysfs_add_control(sfp,idx);
 674         }
 675 }
 676
 677
 678 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 679 {
 680         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 681         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 682                 cip2 = cip1->item_next;
 683                 if (cip1->created_ok) {
 684                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 685                 }
 686                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 687                 kfree(cip1);
 688         }
 689 }
 690
 691
 692 static void pvr2_sysfs_class_release(struct class *class)
 693 {
 694         struct pvr2_sysfs_class *clp;
 695         clp = container_of(class,struct pvr2_sysfs_class,class);
 696         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 697         kfree(clp);
 698 }
 699
 700
 701 static void pvr2_sysfs_release(struct device *class_dev)
 702 {
 703         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 704         kfree(class_dev);
 705 }
 706
 707
 708 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 709 {
 710         if (!sfp->class_dev) return;
 711 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 712         pvr2_sysfs_tear_down_debugifc(sfp);
 713 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 714         pvr2_sysfs_tear_down_controls(sfp);
 715         if (sfp->bus_info_created_ok) {
 716                 device_remove_file(sfp->class_dev,
 717                                          &sfp->attr_bus_info);
 718         }
 719         if (sfp->v4l_minor_number_created_ok) {
 720                 device_remove_file(sfp->class_dev,
 721                                          &sfp->attr_v4l_minor_number);
 722         }
 723         if (sfp->v4l_radio_minor_number_created_ok) {
 724                 device_remove_file(sfp->class_dev,
 725                                          &sfp->attr_v4l_radio_minor_number);
 726         }
 727         if (sfp->unit_number_created_ok) {
 728                 device_remove_file(sfp->class_dev,
 729                                          &sfp->attr_unit_number);
 730         }
 731         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 732         sfp->class_dev->driver_data = NULL;
 733         device_unregister(sfp->class_dev);
 734         sfp->class_dev = NULL;
 735 }
 736
 737
 738 static ssize_t v4l_minor_number_show(struct device *class_dev,
 739                                      struct device_attribute *attr, char *buf)
 740 {
 741         struct pvr2_sysfs *sfp;
 742         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 743         if (!sfp) return -EINVAL;
 744         return scnprintf(buf,PAGE_SIZE,"%d\n",
 745                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 746                                                        pvr2_v4l_type_video));
 747 }
 748
 749
 750 static ssize_t bus_info_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,"%s\n",
 757                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
 758 }
 759
 760
 761 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
 762                                            struct device_attribute *attr,
 763                                            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,"%d\n",
 769                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 770                                                        pvr2_v4l_type_radio));
 771 }
 772
 773
 774 static ssize_t unit_number_show(struct device *class_dev,
 775                                 struct device_attribute *attr, char *buf)
 776 {
 777         struct pvr2_sysfs *sfp;
 778         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 779         if (!sfp) return -EINVAL;
 780         return scnprintf(buf,PAGE_SIZE,"%d\n",
 781                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 782 }
 783
 784
 785 static void class_dev_create(struct pvr2_sysfs *sfp,
 786                              struct pvr2_sysfs_class *class_ptr)
 787 {
 788         struct usb_device *usb_dev;
 789         struct device *class_dev;
 790         int ret;
 791
 792         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 793         if (!usb_dev) return;
 794         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 795         if (!class_dev) return;
 796
 797         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 798
 799         class_dev->class = &class_ptr->class;
 800         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
 801                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "sn-%lu",
 802                          pvr2_hdw_get_sn(sfp->channel.hdw));
 803         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
 804                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "unit-%c",
 805                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
 806         } else {
 807                 kfree(class_dev);
 808                 return;
 809         }
 810
 811         class_dev->parent = &usb_dev->dev;
 812
 813         sfp->class_dev = class_dev;
 814         class_dev->driver_data = sfp;
 815         ret = device_register(class_dev);
 816         if (ret) {
 817                 printk(KERN_ERR "%s: device_register failed\n",
 818                        __FUNCTION__);
 819                 kfree(class_dev);
 820                 return;
 821         }
 822
 823         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 824         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 825         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 826         sfp->attr_v4l_minor_number.store = NULL;
 827         ret = device_create_file(sfp->class_dev,
 828                                        &sfp->attr_v4l_minor_number);
 829         if (ret < 0) {
 830                 printk(KERN_WARNING "%s: device_create_file error: %d\n",
 831                        __FUNCTION__, ret);
 832         } else {
 833                 sfp->v4l_minor_number_created_ok = !0;
 834         }
 835
 836         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 837         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 838         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 839         sfp->attr_v4l_radio_minor_number.store = NULL;
 840         ret = device_create_file(sfp->class_dev,
 841                                        &sfp->attr_v4l_radio_minor_number);
 842         if (ret < 0) {
 843                 printk(KERN_WARNING "%s: device_create_file error: %d\n",
 844                        __FUNCTION__, ret);
 845         } else {
 846                 sfp->v4l_radio_minor_number_created_ok = !0;
 847         }
 848
 849         sfp->attr_unit_number.attr.name = "unit_number";
 850         sfp->attr_unit_number.attr.mode = S_IRUGO;
 851         sfp->attr_unit_number.show = unit_number_show;
 852         sfp->attr_unit_number.store = NULL;
 853         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 854         if (ret < 0) {
 855                 printk(KERN_WARNING "%s: device_create_file error: %d\n",
 856                        __FUNCTION__, ret);
 857         } else {
 858                 sfp->unit_number_created_ok = !0;
 859         }
 860
 861         sfp->attr_bus_info.attr.name = "bus_info_str";
 862         sfp->attr_bus_info.attr.mode = S_IRUGO;
 863         sfp->attr_bus_info.show = bus_info_show;
 864         sfp->attr_bus_info.store = NULL;
 865         ret = device_create_file(sfp->class_dev,
 866                                        &sfp->attr_bus_info);
 867         if (ret < 0) {
 868                 printk(KERN_WARNING "%s: device_create_file error: %d\n",
 869                        __FUNCTION__, ret);
 870         } else {
 871                 sfp->bus_info_created_ok = !0;
 872         }
 873
 874         pvr2_sysfs_add_controls(sfp);
 875 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 876         pvr2_sysfs_add_debugifc(sfp);
 877 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 878 }
 879
 880
 881 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 882 {
 883         struct pvr2_sysfs *sfp;
 884         sfp = container_of(chp,struct pvr2_sysfs,channel);
 885         if (!sfp->channel.mc_head->disconnect_flag) return;
 886         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 887         class_dev_destroy(sfp);
 888         pvr2_channel_done(&sfp->channel);
 889         kfree(sfp);
 890 }
 891
 892
 893 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 894                                      struct pvr2_sysfs_class *class_ptr)
 895 {
 896         struct pvr2_sysfs *sfp;
 897         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 898         if (!sfp) return sfp;
 899         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 900         pvr2_channel_init(&sfp->channel,mp);
 901         sfp->channel.check_func = pvr2_sysfs_internal_check;
 902
 903         class_dev_create(sfp,class_ptr);
 904         return sfp;
 905 }
 906
 907
 908 static int pvr2_sysfs_hotplug(struct device *cd,char **envp,
 909                               int numenvp,char *buf,int size)
 910 {
 911         /* Even though we don't do anything here, we still need this function
 912            because sysfs will still try to call it. */
 913         return 0;
 914 }
 915
 916 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 917 {
 918         struct pvr2_sysfs_class *clp;
 919         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 920         if (!clp) return clp;
 921         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
 922         clp->class.name = "pvrusb2";
 923         clp->class.class_release = pvr2_sysfs_class_release;
 924         clp->class.dev_release = pvr2_sysfs_release;
 925         clp->class.dev_uevent = pvr2_sysfs_hotplug;
 926         if (class_register(&clp->class)) {
 927                 pvr2_sysfs_trace(
 928                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 929                 kfree(clp);
 930                 clp = NULL;
 931         }
 932         return clp;
 933 }
 934
 935
 936 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
 937 {
 938         class_unregister(&clp->class);
 939 }
 940
 941
 942 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 943 static ssize_t debuginfo_show(struct device *class_dev,
 944                               struct device_attribute *attr, char *buf)
 945 {
 946         struct pvr2_sysfs *sfp;
 947         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 948         if (!sfp) return -EINVAL;
 949         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
 950         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
 951 }
 952
 953
 954 static ssize_t debugcmd_show(struct device *class_dev,
 955                              struct device_attribute *attr, char *buf)
 956 {
 957         struct pvr2_sysfs *sfp;
 958         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 959         if (!sfp) return -EINVAL;
 960         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
 961 }
 962
 963
 964 static ssize_t debugcmd_store(struct device *class_dev,
 965                               struct device_attribute *attr,
 966                               const char *buf, size_t count)
 967 {
 968         struct pvr2_sysfs *sfp;
 969         int ret;
 970
 971         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 972         if (!sfp) return -EINVAL;
 973
 974         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
 975         if (ret < 0) return ret;
 976         return count;
 977 }
 978 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 979
 980
 981 /*
 982   Stuff for Emacs to see, in order to encourage consistent editing style:
 983   *** Local Variables: ***
 984   *** mode: c ***
 985   *** fill-column: 75 ***
 986   *** tab-width: 8 ***
 987   *** c-basic-offset: 8 ***
 988   *** End: ***
 989   */