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