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 class_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 class_device_attribute attr_v4l_minor_number;
  43         struct class_device_attribute attr_v4l_radio_minor_number;
  44         struct class_device_attribute attr_unit_number;
  45         int v4l_minor_number_created_ok;
  46         int v4l_radio_minor_number_created_ok;
  47         int unit_number_created_ok;
  48 };
  49
  50 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  51 struct pvr2_sysfs_debugifc {
  52         struct class_device_attribute attr_debugcmd;
  53         struct class_device_attribute attr_debuginfo;
  54         int debugcmd_created_ok;
  55         int debuginfo_created_ok;
  56 };
  57 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  58
  59 struct pvr2_sysfs_ctl_item {
  60         struct class_device_attribute attr_name;
  61         struct class_device_attribute attr_type;
  62         struct class_device_attribute attr_min;
  63         struct class_device_attribute attr_max;
  64         struct class_device_attribute attr_enum;
  65         struct class_device_attribute attr_bits;
  66         struct class_device_attribute attr_val;
  67         struct class_device_attribute attr_custom;
  68         struct pvr2_ctrl *cptr;
  69         struct pvr2_sysfs *chptr;
  70         struct pvr2_sysfs_ctl_item *item_next;
  71         struct attribute *attr_gen[7];
  72         struct attribute_group grp;
  73         int created_ok;
  74         char name[80];
  75 };
  76
  77 struct pvr2_sysfs_class {
  78         struct class class;
  79 };
  80
  81 static ssize_t show_name(int id,struct class_device *class_dev,char *buf)
  82 {
  83         struct pvr2_ctrl *cptr;
  84         struct pvr2_sysfs *sfp;
  85         const char *name;
  86
  87         sfp = (struct pvr2_sysfs *)class_dev->class_data;
  88         if (!sfp) return -EINVAL;
  89         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
  90         if (!cptr) return -EINVAL;
  91
  92         name = pvr2_ctrl_get_desc(cptr);
  93         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",sfp,id,name);
  94
  95         if (!name) return -EINVAL;
  96
  97         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
  98 }
  99
 100 static ssize_t show_type(int id,struct class_device *class_dev,char *buf)
 101 {
 102         struct pvr2_ctrl *cptr;
 103         struct pvr2_sysfs *sfp;
 104         const char *name;
 105         enum pvr2_ctl_type tp;
 106
 107         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 108         if (!sfp) return -EINVAL;
 109         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 110         if (!cptr) return -EINVAL;
 111
 112         tp = pvr2_ctrl_get_type(cptr);
 113         switch (tp) {
 114         case pvr2_ctl_int: name = "integer"; break;
 115         case pvr2_ctl_enum: name = "enum"; break;
 116         case pvr2_ctl_bitmask: name = "bitmask"; break;
 117         case pvr2_ctl_bool: name = "boolean"; break;
 118         default: name = "?"; break;
 119         }
 120         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",sfp,id,name);
 121
 122         if (!name) return -EINVAL;
 123
 124         return scnprintf(buf,PAGE_SIZE,"%s\n",name);
 125 }
 126
 127 static ssize_t show_min(int id,struct class_device *class_dev,char *buf)
 128 {
 129         struct pvr2_ctrl *cptr;
 130         struct pvr2_sysfs *sfp;
 131         long val;
 132
 133         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 134         if (!sfp) return -EINVAL;
 135         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 136         if (!cptr) return -EINVAL;
 137         val = pvr2_ctrl_get_min(cptr);
 138
 139         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",sfp,id,val);
 140
 141         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 142 }
 143
 144 static ssize_t show_max(int id,struct class_device *class_dev,char *buf)
 145 {
 146         struct pvr2_ctrl *cptr;
 147         struct pvr2_sysfs *sfp;
 148         long val;
 149
 150         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 151         if (!sfp) return -EINVAL;
 152         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 153         if (!cptr) return -EINVAL;
 154         val = pvr2_ctrl_get_max(cptr);
 155
 156         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",sfp,id,val);
 157
 158         return scnprintf(buf,PAGE_SIZE,"%ld\n",val);
 159 }
 160
 161 static ssize_t show_val_norm(int id,struct class_device *class_dev,char *buf)
 162 {
 163         struct pvr2_ctrl *cptr;
 164         struct pvr2_sysfs *sfp;
 165         int val,ret;
 166         unsigned int cnt = 0;
 167
 168         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 169         if (!sfp) return -EINVAL;
 170         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 171         if (!cptr) return -EINVAL;
 172
 173         ret = pvr2_ctrl_get_value(cptr,&val);
 174         if (ret < 0) return ret;
 175
 176         ret = pvr2_ctrl_value_to_sym(cptr,~0,val,
 177                                      buf,PAGE_SIZE-1,&cnt);
 178
 179         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
 180                          sfp,id,cnt,buf,val);
 181         buf[cnt] = '\n';
 182         return cnt+1;
 183 }
 184
 185 static ssize_t show_val_custom(int id,struct class_device *class_dev,char *buf)
 186 {
 187         struct pvr2_ctrl *cptr;
 188         struct pvr2_sysfs *sfp;
 189         int val,ret;
 190         unsigned int cnt = 0;
 191
 192         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 193         if (!sfp) return -EINVAL;
 194         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 195         if (!cptr) return -EINVAL;
 196
 197         ret = pvr2_ctrl_get_value(cptr,&val);
 198         if (ret < 0) return ret;
 199
 200         ret = pvr2_ctrl_custom_value_to_sym(cptr,~0,val,
 201                                             buf,PAGE_SIZE-1,&cnt);
 202
 203         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
 204                          sfp,id,cnt,buf,val);
 205         buf[cnt] = '\n';
 206         return cnt+1;
 207 }
 208
 209 static ssize_t show_enum(int id,struct class_device *class_dev,char *buf)
 210 {
 211         struct pvr2_ctrl *cptr;
 212         struct pvr2_sysfs *sfp;
 213         long val;
 214         unsigned int bcnt,ccnt,ecnt;
 215
 216         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 217         if (!sfp) return -EINVAL;
 218         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 219         if (!cptr) return -EINVAL;
 220         ecnt = pvr2_ctrl_get_cnt(cptr);
 221         bcnt = 0;
 222         for (val = 0; val < ecnt; val++) {
 223                 pvr2_ctrl_get_valname(cptr,val,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 224                 if (!ccnt) continue;
 225                 bcnt += ccnt;
 226                 if (bcnt >= PAGE_SIZE) break;
 227                 buf[bcnt] = '\n';
 228                 bcnt++;
 229         }
 230         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",sfp,id);
 231         return bcnt;
 232 }
 233
 234 static ssize_t show_bits(int id,struct class_device *class_dev,char *buf)
 235 {
 236         struct pvr2_ctrl *cptr;
 237         struct pvr2_sysfs *sfp;
 238         int valid_bits,msk;
 239         unsigned int bcnt,ccnt;
 240
 241         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 242         if (!sfp) return -EINVAL;
 243         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 244         if (!cptr) return -EINVAL;
 245         valid_bits = pvr2_ctrl_get_mask(cptr);
 246         bcnt = 0;
 247         for (msk = 1; valid_bits; msk <<= 1) {
 248                 if (!(msk & valid_bits)) continue;
 249                 valid_bits &= ~msk;
 250                 pvr2_ctrl_get_valname(cptr,msk,buf+bcnt,PAGE_SIZE-bcnt,&ccnt);
 251                 bcnt += ccnt;
 252                 if (bcnt >= PAGE_SIZE) break;
 253                 buf[bcnt] = '\n';
 254                 bcnt++;
 255         }
 256         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",sfp,id);
 257         return bcnt;
 258 }
 259
 260 static int store_val_any(int id,int customfl,struct pvr2_sysfs *sfp,
 261                          const char *buf,unsigned int count)
 262 {
 263         struct pvr2_ctrl *cptr;
 264         int ret;
 265         int mask,val;
 266
 267         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,id);
 268         if (customfl) {
 269                 ret = pvr2_ctrl_custom_sym_to_value(cptr,buf,count,&mask,&val);
 270         } else {
 271                 ret = pvr2_ctrl_sym_to_value(cptr,buf,count,&mask,&val);
 272         }
 273         if (ret < 0) return ret;
 274         ret = pvr2_ctrl_set_mask_value(cptr,mask,val);
 275         pvr2_hdw_commit_ctl(sfp->channel.hdw);
 276         return ret;
 277 }
 278
 279 static ssize_t store_val_norm(int id,struct class_device *class_dev,
 280                              const char *buf,size_t count)
 281 {
 282         struct pvr2_sysfs *sfp;
 283         int ret;
 284         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 285         ret = store_val_any(id,0,sfp,buf,count);
 286         if (!ret) ret = count;
 287         return ret;
 288 }
 289
 290 static ssize_t store_val_custom(int id,struct class_device *class_dev,
 291                                 const char *buf,size_t count)
 292 {
 293         struct pvr2_sysfs *sfp;
 294         int ret;
 295         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 296         ret = store_val_any(id,1,sfp,buf,count);
 297         if (!ret) ret = count;
 298         return ret;
 299 }
 300
 301 /*
 302   Mike Isely <isely@pobox.com> 30-April-2005
 303
 304   This next batch of horrible preprocessor hackery is needed because the
 305   kernel's class_device_attribute mechanism fails to pass the actual
 306   attribute through to the show / store functions, which means we have no
 307   way to package up any attribute-specific parameters, like for example the
 308   control id.  So we work around this brain-damage by encoding the control
 309   id into the show / store functions themselves and pick the function based
 310   on the control id we're setting up.  These macros try to ease the pain.
 311   Yuck.
 312 */
 313
 314 #define CREATE_SHOW_INSTANCE(sf_name,ctl_id) \
 315 static ssize_t sf_name##_##ctl_id(struct class_device *class_dev,char *buf) \
 316 { return sf_name(ctl_id,class_dev,buf); }
 317
 318 #define CREATE_STORE_INSTANCE(sf_name,ctl_id) \
 319 static ssize_t sf_name##_##ctl_id(struct class_device *class_dev,const char *buf,size_t count) \
 320 { return sf_name(ctl_id,class_dev,buf,count); }
 321
 322 #define CREATE_BATCH(ctl_id) \
 323 CREATE_SHOW_INSTANCE(show_name,ctl_id) \
 324 CREATE_SHOW_INSTANCE(show_type,ctl_id) \
 325 CREATE_SHOW_INSTANCE(show_min,ctl_id) \
 326 CREATE_SHOW_INSTANCE(show_max,ctl_id) \
 327 CREATE_SHOW_INSTANCE(show_val_norm,ctl_id) \
 328 CREATE_SHOW_INSTANCE(show_val_custom,ctl_id) \
 329 CREATE_SHOW_INSTANCE(show_enum,ctl_id) \
 330 CREATE_SHOW_INSTANCE(show_bits,ctl_id) \
 331 CREATE_STORE_INSTANCE(store_val_norm,ctl_id) \
 332 CREATE_STORE_INSTANCE(store_val_custom,ctl_id) \
 333
 334 CREATE_BATCH(0)
 335 CREATE_BATCH(1)
 336 CREATE_BATCH(2)
 337 CREATE_BATCH(3)
 338 CREATE_BATCH(4)
 339 CREATE_BATCH(5)
 340 CREATE_BATCH(6)
 341 CREATE_BATCH(7)
 342 CREATE_BATCH(8)
 343 CREATE_BATCH(9)
 344 CREATE_BATCH(10)
 345 CREATE_BATCH(11)
 346 CREATE_BATCH(12)
 347 CREATE_BATCH(13)
 348 CREATE_BATCH(14)
 349 CREATE_BATCH(15)
 350 CREATE_BATCH(16)
 351 CREATE_BATCH(17)
 352 CREATE_BATCH(18)
 353 CREATE_BATCH(19)
 354 CREATE_BATCH(20)
 355 CREATE_BATCH(21)
 356 CREATE_BATCH(22)
 357 CREATE_BATCH(23)
 358 CREATE_BATCH(24)
 359 CREATE_BATCH(25)
 360 CREATE_BATCH(26)
 361 CREATE_BATCH(27)
 362 CREATE_BATCH(28)
 363 CREATE_BATCH(29)
 364 CREATE_BATCH(30)
 365 CREATE_BATCH(31)
 366 CREATE_BATCH(32)
 367 CREATE_BATCH(33)
 368 CREATE_BATCH(34)
 369 CREATE_BATCH(35)
 370 CREATE_BATCH(36)
 371 CREATE_BATCH(37)
 372 CREATE_BATCH(38)
 373 CREATE_BATCH(39)
 374 CREATE_BATCH(40)
 375 CREATE_BATCH(41)
 376 CREATE_BATCH(42)
 377 CREATE_BATCH(43)
 378 CREATE_BATCH(44)
 379 CREATE_BATCH(45)
 380 CREATE_BATCH(46)
 381 CREATE_BATCH(47)
 382 CREATE_BATCH(48)
 383 CREATE_BATCH(49)
 384 CREATE_BATCH(50)
 385 CREATE_BATCH(51)
 386 CREATE_BATCH(52)
 387 CREATE_BATCH(53)
 388 CREATE_BATCH(54)
 389 CREATE_BATCH(55)
 390 CREATE_BATCH(56)
 391 CREATE_BATCH(57)
 392 CREATE_BATCH(58)
 393 CREATE_BATCH(59)
 394
 395 struct pvr2_sysfs_func_set {
 396         ssize_t (*show_name)(struct class_device *,char *);
 397         ssize_t (*show_type)(struct class_device *,char *);
 398         ssize_t (*show_min)(struct class_device *,char *);
 399         ssize_t (*show_max)(struct class_device *,char *);
 400         ssize_t (*show_enum)(struct class_device *,char *);
 401         ssize_t (*show_bits)(struct class_device *,char *);
 402         ssize_t (*show_val_norm)(struct class_device *,char *);
 403         ssize_t (*store_val_norm)(struct class_device *,
 404                                   const char *,size_t);
 405         ssize_t (*show_val_custom)(struct class_device *,char *);
 406         ssize_t (*store_val_custom)(struct class_device *,
 407                                     const char *,size_t);
 408 };
 409
 410 #define INIT_BATCH(ctl_id) \
 411 [ctl_id] = { \
 412     .show_name = show_name_##ctl_id, \
 413     .show_type = show_type_##ctl_id, \
 414     .show_min = show_min_##ctl_id, \
 415     .show_max = show_max_##ctl_id, \
 416     .show_enum = show_enum_##ctl_id, \
 417     .show_bits = show_bits_##ctl_id, \
 418     .show_val_norm = show_val_norm_##ctl_id, \
 419     .store_val_norm = store_val_norm_##ctl_id, \
 420     .show_val_custom = show_val_custom_##ctl_id, \
 421     .store_val_custom = store_val_custom_##ctl_id, \
 422 } \
 423
 424 static struct pvr2_sysfs_func_set funcs[] = {
 425         INIT_BATCH(0),
 426         INIT_BATCH(1),
 427         INIT_BATCH(2),
 428         INIT_BATCH(3),
 429         INIT_BATCH(4),
 430         INIT_BATCH(5),
 431         INIT_BATCH(6),
 432         INIT_BATCH(7),
 433         INIT_BATCH(8),
 434         INIT_BATCH(9),
 435         INIT_BATCH(10),
 436         INIT_BATCH(11),
 437         INIT_BATCH(12),
 438         INIT_BATCH(13),
 439         INIT_BATCH(14),
 440         INIT_BATCH(15),
 441         INIT_BATCH(16),
 442         INIT_BATCH(17),
 443         INIT_BATCH(18),
 444         INIT_BATCH(19),
 445         INIT_BATCH(20),
 446         INIT_BATCH(21),
 447         INIT_BATCH(22),
 448         INIT_BATCH(23),
 449         INIT_BATCH(24),
 450         INIT_BATCH(25),
 451         INIT_BATCH(26),
 452         INIT_BATCH(27),
 453         INIT_BATCH(28),
 454         INIT_BATCH(29),
 455         INIT_BATCH(30),
 456         INIT_BATCH(31),
 457         INIT_BATCH(32),
 458         INIT_BATCH(33),
 459         INIT_BATCH(34),
 460         INIT_BATCH(35),
 461         INIT_BATCH(36),
 462         INIT_BATCH(37),
 463         INIT_BATCH(38),
 464         INIT_BATCH(39),
 465         INIT_BATCH(40),
 466         INIT_BATCH(41),
 467         INIT_BATCH(42),
 468         INIT_BATCH(43),
 469         INIT_BATCH(44),
 470         INIT_BATCH(45),
 471         INIT_BATCH(46),
 472         INIT_BATCH(47),
 473         INIT_BATCH(48),
 474         INIT_BATCH(49),
 475         INIT_BATCH(50),
 476         INIT_BATCH(51),
 477         INIT_BATCH(52),
 478         INIT_BATCH(53),
 479         INIT_BATCH(54),
 480         INIT_BATCH(55),
 481         INIT_BATCH(56),
 482         INIT_BATCH(57),
 483         INIT_BATCH(58),
 484         INIT_BATCH(59),
 485 };
 486
 487
 488 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 489 {
 490         struct pvr2_sysfs_ctl_item *cip;
 491         struct pvr2_sysfs_func_set *fp;
 492         struct pvr2_ctrl *cptr;
 493         unsigned int cnt,acnt;
 494         int ret;
 495
 496         if ((ctl_id < 0) || (ctl_id >= ARRAY_SIZE(funcs))) {
 497                 return;
 498         }
 499
 500         fp = funcs + ctl_id;
 501         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 502         if (!cptr) return;
 503
 504         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
 505         if (!cip) return;
 506         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 507
 508         cip->cptr = cptr;
 509
 510         cip->chptr = sfp;
 511         cip->item_next = NULL;
 512         if (sfp->item_last) {
 513                 sfp->item_last->item_next = cip;
 514         } else {
 515                 sfp->item_first = cip;
 516         }
 517         sfp->item_last = cip;
 518
 519         cip->attr_name.attr.owner = THIS_MODULE;
 520         cip->attr_name.attr.name = "name";
 521         cip->attr_name.attr.mode = S_IRUGO;
 522         cip->attr_name.show = fp->show_name;
 523
 524         cip->attr_type.attr.owner = THIS_MODULE;
 525         cip->attr_type.attr.name = "type";
 526         cip->attr_type.attr.mode = S_IRUGO;
 527         cip->attr_type.show = fp->show_type;
 528
 529         cip->attr_min.attr.owner = THIS_MODULE;
 530         cip->attr_min.attr.name = "min_val";
 531         cip->attr_min.attr.mode = S_IRUGO;
 532         cip->attr_min.show = fp->show_min;
 533
 534         cip->attr_max.attr.owner = THIS_MODULE;
 535         cip->attr_max.attr.name = "max_val";
 536         cip->attr_max.attr.mode = S_IRUGO;
 537         cip->attr_max.show = fp->show_max;
 538
 539         cip->attr_val.attr.owner = THIS_MODULE;
 540         cip->attr_val.attr.name = "cur_val";
 541         cip->attr_val.attr.mode = S_IRUGO;
 542
 543         cip->attr_custom.attr.owner = THIS_MODULE;
 544         cip->attr_custom.attr.name = "custom_val";
 545         cip->attr_custom.attr.mode = S_IRUGO;
 546
 547         cip->attr_enum.attr.owner = THIS_MODULE;
 548         cip->attr_enum.attr.name = "enum_val";
 549         cip->attr_enum.attr.mode = S_IRUGO;
 550         cip->attr_enum.show = fp->show_enum;
 551
 552         cip->attr_bits.attr.owner = THIS_MODULE;
 553         cip->attr_bits.attr.name = "bit_val";
 554         cip->attr_bits.attr.mode = S_IRUGO;
 555         cip->attr_bits.show = fp->show_bits;
 556
 557         if (pvr2_ctrl_is_writable(cptr)) {
 558                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 559                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 560         }
 561
 562         acnt = 0;
 563         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 564         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 565         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 566         cip->attr_val.show = fp->show_val_norm;
 567         cip->attr_val.store = fp->store_val_norm;
 568         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 569                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 570                 cip->attr_custom.show = fp->show_val_custom;
 571                 cip->attr_custom.store = fp->store_val_custom;
 572         }
 573         switch (pvr2_ctrl_get_type(cptr)) {
 574         case pvr2_ctl_enum:
 575                 // Control is an enumeration
 576                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 577                 break;
 578         case pvr2_ctl_int:
 579                 // Control is an integer
 580                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 581                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 582                 break;
 583         case pvr2_ctl_bitmask:
 584                 // Control is an bitmask
 585                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 586                 break;
 587         default: break;
 588         }
 589
 590         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 591                         pvr2_ctrl_get_name(cptr));
 592         cip->name[cnt] = 0;
 593         cip->grp.name = cip->name;
 594         cip->grp.attrs = cip->attr_gen;
 595
 596         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 597         if (ret) {
 598                 printk(KERN_WARNING "%s: sysfs_create_group error: %d\n",
 599                        __FUNCTION__, ret);
 600                 return;
 601         }
 602         cip->created_ok = !0;
 603 }
 604
 605 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 606 static ssize_t debuginfo_show(struct class_device *,char *);
 607 static ssize_t debugcmd_show(struct class_device *,char *);
 608 static ssize_t debugcmd_store(struct class_device *,const char *,size_t count);
 609
 610 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 611 {
 612         struct pvr2_sysfs_debugifc *dip;
 613         int ret;
 614
 615         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
 616         if (!dip) return;
 617         dip->attr_debugcmd.attr.owner = THIS_MODULE;
 618         dip->attr_debugcmd.attr.name = "debugcmd";
 619         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 620         dip->attr_debugcmd.show = debugcmd_show;
 621         dip->attr_debugcmd.store = debugcmd_store;
 622         dip->attr_debuginfo.attr.owner = THIS_MODULE;
 623         dip->attr_debuginfo.attr.name = "debuginfo";
 624         dip->attr_debuginfo.attr.mode = S_IRUGO;
 625         dip->attr_debuginfo.show = debuginfo_show;
 626         sfp->debugifc = dip;
 627         ret = class_device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 628         if (ret < 0) {
 629                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
 630                        __FUNCTION__, ret);
 631         } else {
 632                 dip->debugcmd_created_ok = !0;
 633         }
 634         ret = class_device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 635         if (ret < 0) {
 636                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
 637                        __FUNCTION__, ret);
 638         } else {
 639                 dip->debuginfo_created_ok = !0;
 640         }
 641 }
 642
 643
 644 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 645 {
 646         if (!sfp->debugifc) return;
 647         if (sfp->debugifc->debuginfo_created_ok) {
 648                 class_device_remove_file(sfp->class_dev,
 649                                          &sfp->debugifc->attr_debuginfo);
 650         }
 651         if (sfp->debugifc->debugcmd_created_ok) {
 652                 class_device_remove_file(sfp->class_dev,
 653                                          &sfp->debugifc->attr_debugcmd);
 654         }
 655         kfree(sfp->debugifc);
 656         sfp->debugifc = NULL;
 657 }
 658 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 659
 660
 661 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 662 {
 663         unsigned int idx,cnt;
 664         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 665         for (idx = 0; idx < cnt; idx++) {
 666                 pvr2_sysfs_add_control(sfp,idx);
 667         }
 668 }
 669
 670
 671 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 672 {
 673         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 674         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 675                 cip2 = cip1->item_next;
 676                 if (cip1->created_ok) {
 677                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 678                 }
 679                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 680                 kfree(cip1);
 681         }
 682 }
 683
 684
 685 static void pvr2_sysfs_class_release(struct class *class)
 686 {
 687         struct pvr2_sysfs_class *clp;
 688         clp = container_of(class,struct pvr2_sysfs_class,class);
 689         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 690         kfree(clp);
 691 }
 692
 693
 694 static void pvr2_sysfs_release(struct class_device *class_dev)
 695 {
 696         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 697         kfree(class_dev);
 698 }
 699
 700
 701 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 702 {
 703         if (!sfp->class_dev) return;
 704 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 705         pvr2_sysfs_tear_down_debugifc(sfp);
 706 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 707         pvr2_sysfs_tear_down_controls(sfp);
 708         if (sfp->v4l_minor_number_created_ok) {
 709                 class_device_remove_file(sfp->class_dev,
 710                                          &sfp->attr_v4l_minor_number);
 711         }
 712         if (sfp->v4l_radio_minor_number_created_ok) {
 713                 class_device_remove_file(sfp->class_dev,
 714                                          &sfp->attr_v4l_radio_minor_number);
 715         }
 716         if (sfp->unit_number_created_ok) {
 717                 class_device_remove_file(sfp->class_dev,
 718                                          &sfp->attr_unit_number);
 719         }
 720         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 721         sfp->class_dev->class_data = NULL;
 722         class_device_unregister(sfp->class_dev);
 723         sfp->class_dev = NULL;
 724 }
 725
 726
 727 static ssize_t v4l_minor_number_show(struct class_device *class_dev,char *buf)
 728 {
 729         struct pvr2_sysfs *sfp;
 730         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 731         if (!sfp) return -EINVAL;
 732         return scnprintf(buf,PAGE_SIZE,"%d\n",
 733                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 734                                                        pvr2_v4l_type_video));
 735 }
 736
 737
 738 static ssize_t v4l_radio_minor_number_show(struct class_device *class_dev,
 739                                            char *buf)
 740 {
 741         struct pvr2_sysfs *sfp;
 742         sfp = (struct pvr2_sysfs *)class_dev->class_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_radio));
 747 }
 748
 749
 750 static ssize_t unit_number_show(struct class_device *class_dev,char *buf)
 751 {
 752         struct pvr2_sysfs *sfp;
 753         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 754         if (!sfp) return -EINVAL;
 755         return scnprintf(buf,PAGE_SIZE,"%d\n",
 756                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 757 }
 758
 759
 760 static void class_dev_create(struct pvr2_sysfs *sfp,
 761                              struct pvr2_sysfs_class *class_ptr)
 762 {
 763         struct usb_device *usb_dev;
 764         struct class_device *class_dev;
 765         int ret;
 766
 767         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 768         if (!usb_dev) return;
 769         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 770         if (!class_dev) return;
 771
 772         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 773
 774         class_dev->class = &class_ptr->class;
 775         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
 776                 snprintf(class_dev->class_id,BUS_ID_SIZE,"sn-%lu",
 777                          pvr2_hdw_get_sn(sfp->channel.hdw));
 778         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
 779                 snprintf(class_dev->class_id,BUS_ID_SIZE,"unit-%c",
 780                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
 781         } else {
 782                 kfree(class_dev);
 783                 return;
 784         }
 785
 786         class_dev->dev = &usb_dev->dev;
 787
 788         sfp->class_dev = class_dev;
 789         class_dev->class_data = sfp;
 790         ret = class_device_register(class_dev);
 791         if (ret) {
 792                 printk(KERN_ERR "%s: class_device_register failed\n",
 793                        __FUNCTION__);
 794                 kfree(class_dev);
 795                 return;
 796         }
 797
 798         sfp->attr_v4l_minor_number.attr.owner = THIS_MODULE;
 799         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 800         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 801         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 802         sfp->attr_v4l_minor_number.store = NULL;
 803         ret = class_device_create_file(sfp->class_dev,
 804                                        &sfp->attr_v4l_minor_number);
 805         if (ret < 0) {
 806                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
 807                        __FUNCTION__, ret);
 808         } else {
 809                 sfp->v4l_minor_number_created_ok = !0;
 810         }
 811
 812         sfp->attr_v4l_radio_minor_number.attr.owner = THIS_MODULE;
 813         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 814         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 815         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 816         sfp->attr_v4l_radio_minor_number.store = NULL;
 817         ret = class_device_create_file(sfp->class_dev,
 818                                        &sfp->attr_v4l_radio_minor_number);
 819         if (ret < 0) {
 820                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
 821                        __FUNCTION__, ret);
 822         } else {
 823                 sfp->v4l_radio_minor_number_created_ok = !0;
 824         }
 825
 826         sfp->attr_unit_number.attr.owner = THIS_MODULE;
 827         sfp->attr_unit_number.attr.name = "unit_number";
 828         sfp->attr_unit_number.attr.mode = S_IRUGO;
 829         sfp->attr_unit_number.show = unit_number_show;
 830         sfp->attr_unit_number.store = NULL;
 831         ret = class_device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 832         if (ret < 0) {
 833                 printk(KERN_WARNING "%s: class_device_create_file error: %d\n",
 834                        __FUNCTION__, ret);
 835         } else {
 836                 sfp->unit_number_created_ok = !0;
 837         }
 838
 839         pvr2_sysfs_add_controls(sfp);
 840 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 841         pvr2_sysfs_add_debugifc(sfp);
 842 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 843 }
 844
 845
 846 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 847 {
 848         struct pvr2_sysfs *sfp;
 849         sfp = container_of(chp,struct pvr2_sysfs,channel);
 850         if (!sfp->channel.mc_head->disconnect_flag) return;
 851         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 852         class_dev_destroy(sfp);
 853         pvr2_channel_done(&sfp->channel);
 854         kfree(sfp);
 855 }
 856
 857
 858 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 859                                      struct pvr2_sysfs_class *class_ptr)
 860 {
 861         struct pvr2_sysfs *sfp;
 862         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 863         if (!sfp) return sfp;
 864         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 865         pvr2_channel_init(&sfp->channel,mp);
 866         sfp->channel.check_func = pvr2_sysfs_internal_check;
 867
 868         class_dev_create(sfp,class_ptr);
 869         return sfp;
 870 }
 871
 872
 873 static int pvr2_sysfs_hotplug(struct class_device *cd,char **envp,
 874                               int numenvp,char *buf,int size)
 875 {
 876         /* Even though we don't do anything here, we still need this function
 877            because sysfs will still try to call it. */
 878         return 0;
 879 }
 880
 881 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 882 {
 883         struct pvr2_sysfs_class *clp;
 884         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 885         if (!clp) return clp;
 886         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
 887         clp->class.name = "pvrusb2";
 888         clp->class.class_release = pvr2_sysfs_class_release;
 889         clp->class.release = pvr2_sysfs_release;
 890         clp->class.uevent = pvr2_sysfs_hotplug;
 891         if (class_register(&clp->class)) {
 892                 pvr2_sysfs_trace(
 893                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 894                 kfree(clp);
 895                 clp = NULL;
 896         }
 897         return clp;
 898 }
 899
 900
 901 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
 902 {
 903         class_unregister(&clp->class);
 904 }
 905
 906
 907 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 908 static ssize_t debuginfo_show(struct class_device *class_dev,char *buf)
 909 {
 910         struct pvr2_sysfs *sfp;
 911         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 912         if (!sfp) return -EINVAL;
 913         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
 914         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
 915 }
 916
 917
 918 static ssize_t debugcmd_show(struct class_device *class_dev,char *buf)
 919 {
 920         struct pvr2_sysfs *sfp;
 921         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 922         if (!sfp) return -EINVAL;
 923         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
 924 }
 925
 926
 927 static ssize_t debugcmd_store(struct class_device *class_dev,
 928                               const char *buf,size_t count)
 929 {
 930         struct pvr2_sysfs *sfp;
 931         int ret;
 932
 933         sfp = (struct pvr2_sysfs *)class_dev->class_data;
 934         if (!sfp) return -EINVAL;
 935
 936         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
 937         if (ret < 0) return ret;
 938         return count;
 939 }
 940 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 941
 942
 943 /*
 944   Stuff for Emacs to see, in order to encourage consistent editing style:
 945   *** Local Variables: ***
 946   *** mode: c ***
 947   *** fill-column: 75 ***
 948   *** tab-width: 8 ***
 949   *** c-basic-offset: 8 ***
 950   *** End: ***
 951   */