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

   1 /*
   2  *
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  */
  16
  17 #include <linux/string.h>
  18 #include <linux/slab.h>
  19 #include "pvrusb2-sysfs.h"
  20 #include "pvrusb2-hdw.h"
  21 #include "pvrusb2-debug.h"
  22 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  23 #include "pvrusb2-debugifc.h"
  24 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  25
  26 #define pvr2_sysfs_trace(...) pvr2_trace(PVR2_TRACE_SYSFS,__VA_ARGS__)
  27
  28 struct pvr2_sysfs {
  29         struct pvr2_channel channel;
  30         struct device *class_dev;
  31 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  32         struct pvr2_sysfs_debugifc *debugifc;
  33 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  34         struct pvr2_sysfs_ctl_item *item_first;
  35         struct pvr2_sysfs_ctl_item *item_last;
  36         struct device_attribute attr_v4l_minor_number;
  37         struct device_attribute attr_v4l_radio_minor_number;
  38         struct device_attribute attr_unit_number;
  39         struct device_attribute attr_bus_info;
  40         struct device_attribute attr_hdw_name;
  41         struct device_attribute attr_hdw_desc;
  42         int v4l_minor_number_created_ok;
  43         int v4l_radio_minor_number_created_ok;
  44         int unit_number_created_ok;
  45         int bus_info_created_ok;
  46         int hdw_name_created_ok;
  47         int hdw_desc_created_ok;
  48 };
  49
  50 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  51 struct pvr2_sysfs_debugifc {
  52         struct device_attribute attr_debugcmd;
  53         struct 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 device_attribute attr_name;
  61         struct device_attribute attr_type;
  62         struct device_attribute attr_min;
  63         struct device_attribute attr_max;
  64         struct device_attribute attr_def;
  65         struct device_attribute attr_enum;
  66         struct device_attribute attr_bits;
  67         struct device_attribute attr_val;
  68         struct device_attribute attr_custom;
  69         struct pvr2_ctrl *cptr;
  70         int ctl_id;
  71         struct pvr2_sysfs *chptr;
  72         struct pvr2_sysfs_ctl_item *item_next;
  73         struct attribute *attr_gen[8];
  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(struct device *class_dev,
  84                          struct device_attribute *attr,
  85                          char *buf)
  86 {
  87         struct pvr2_sysfs_ctl_item *cip;
  88         const char *name;
  89         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_name);
  90         name = pvr2_ctrl_get_desc(cip->cptr);
  91         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",
  92                          cip->chptr, cip->ctl_id, name);
  93         if (!name) return -EINVAL;
  94         return scnprintf(buf, PAGE_SIZE, "%s\n", name);
  95 }
  96
  97 static ssize_t show_type(struct device *class_dev,
  98                          struct device_attribute *attr,
  99                          char *buf)
 100 {
 101         struct pvr2_sysfs_ctl_item *cip;
 102         const char *name;
 103         enum pvr2_ctl_type tp;
 104         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_type);
 105         tp = pvr2_ctrl_get_type(cip->cptr);
 106         switch (tp) {
 107         case pvr2_ctl_int: name = "integer"; break;
 108         case pvr2_ctl_enum: name = "enum"; break;
 109         case pvr2_ctl_bitmask: name = "bitmask"; break;
 110         case pvr2_ctl_bool: name = "boolean"; break;
 111         default: name = "?"; break;
 112         }
 113         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",
 114                          cip->chptr, cip->ctl_id, name);
 115         return scnprintf(buf, PAGE_SIZE, "%s\n", name);
 116 }
 117
 118 static ssize_t show_min(struct device *class_dev,
 119                         struct device_attribute *attr,
 120                         char *buf)
 121 {
 122         struct pvr2_sysfs_ctl_item *cip;
 123         long val;
 124         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_min);
 125         val = pvr2_ctrl_get_min(cip->cptr);
 126         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",
 127                          cip->chptr, cip->ctl_id, val);
 128         return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
 129 }
 130
 131 static ssize_t show_max(struct device *class_dev,
 132                         struct device_attribute *attr,
 133                         char *buf)
 134 {
 135         struct pvr2_sysfs_ctl_item *cip;
 136         long val;
 137         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_max);
 138         val = pvr2_ctrl_get_max(cip->cptr);
 139         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",
 140                          cip->chptr, cip->ctl_id, val);
 141         return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
 142 }
 143
 144 static ssize_t show_def(struct device *class_dev,
 145                         struct device_attribute *attr,
 146                         char *buf)
 147 {
 148         struct pvr2_sysfs_ctl_item *cip;
 149         int val;
 150         int ret;
 151         unsigned int cnt = 0;
 152         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_def);
 153         ret = pvr2_ctrl_get_def(cip->cptr, &val);
 154         if (ret < 0) return ret;
 155         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
 156                                      buf, PAGE_SIZE - 1, &cnt);
 157         pvr2_sysfs_trace("pvr2_sysfs(%p) show_def(cid=%d) is %.*s (%d)",
 158                          cip->chptr, cip->ctl_id, cnt, buf, val);
 159         buf[cnt] = '\n';
 160         return cnt + 1;
 161 }
 162
 163 static ssize_t show_val_norm(struct device *class_dev,
 164                              struct device_attribute *attr,
 165                              char *buf)
 166 {
 167         struct pvr2_sysfs_ctl_item *cip;
 168         int val;
 169         int ret;
 170         unsigned int cnt = 0;
 171         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
 172         ret = pvr2_ctrl_get_value(cip->cptr, &val);
 173         if (ret < 0) return ret;
 174         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
 175                                      buf, PAGE_SIZE - 1, &cnt);
 176         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
 177                          cip->chptr, cip->ctl_id, cnt, buf, val);
 178         buf[cnt] = '\n';
 179         return cnt+1;
 180 }
 181
 182 static ssize_t show_val_custom(struct device *class_dev,
 183                                struct device_attribute *attr,
 184                                char *buf)
 185 {
 186         struct pvr2_sysfs_ctl_item *cip;
 187         int val;
 188         int ret;
 189         unsigned int cnt = 0;
 190         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
 191         ret = pvr2_ctrl_get_value(cip->cptr, &val);
 192         if (ret < 0) return ret;
 193         ret = pvr2_ctrl_custom_value_to_sym(cip->cptr, ~0, val,
 194                                             buf, PAGE_SIZE - 1, &cnt);
 195         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
 196                          cip->chptr, cip->ctl_id, cnt, buf, val);
 197         buf[cnt] = '\n';
 198         return cnt+1;
 199 }
 200
 201 static ssize_t show_enum(struct device *class_dev,
 202                          struct device_attribute *attr,
 203                          char *buf)
 204 {
 205         struct pvr2_sysfs_ctl_item *cip;
 206         long val;
 207         unsigned int bcnt, ccnt, ecnt;
 208         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_enum);
 209         ecnt = pvr2_ctrl_get_cnt(cip->cptr);
 210         bcnt = 0;
 211         for (val = 0; val < ecnt; val++) {
 212                 pvr2_ctrl_get_valname(cip->cptr, val, buf + bcnt,
 213                                       PAGE_SIZE - bcnt, &ccnt);
 214                 if (!ccnt) continue;
 215                 bcnt += ccnt;
 216                 if (bcnt >= PAGE_SIZE) break;
 217                 buf[bcnt] = '\n';
 218                 bcnt++;
 219         }
 220         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",
 221                          cip->chptr, cip->ctl_id);
 222         return bcnt;
 223 }
 224
 225 static ssize_t show_bits(struct device *class_dev,
 226                          struct device_attribute *attr,
 227                          char *buf)
 228 {
 229         struct pvr2_sysfs_ctl_item *cip;
 230         int valid_bits, msk;
 231         unsigned int bcnt, ccnt;
 232         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_bits);
 233         valid_bits = pvr2_ctrl_get_mask(cip->cptr);
 234         bcnt = 0;
 235         for (msk = 1; valid_bits; msk <<= 1) {
 236                 if (!(msk & valid_bits)) continue;
 237                 valid_bits &= ~msk;
 238                 pvr2_ctrl_get_valname(cip->cptr, msk, buf + bcnt,
 239                                       PAGE_SIZE - bcnt, &ccnt);
 240                 bcnt += ccnt;
 241                 if (bcnt >= PAGE_SIZE) break;
 242                 buf[bcnt] = '\n';
 243                 bcnt++;
 244         }
 245         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",
 246                          cip->chptr, cip->ctl_id);
 247         return bcnt;
 248 }
 249
 250 static int store_val_any(struct pvr2_sysfs_ctl_item *cip, int customfl,
 251                          const char *buf,unsigned int count)
 252 {
 253         int ret;
 254         int mask,val;
 255         if (customfl) {
 256                 ret = pvr2_ctrl_custom_sym_to_value(cip->cptr, buf, count,
 257                                                     &mask, &val);
 258         } else {
 259                 ret = pvr2_ctrl_sym_to_value(cip->cptr, buf, count,
 260                                              &mask, &val);
 261         }
 262         if (ret < 0) return ret;
 263         ret = pvr2_ctrl_set_mask_value(cip->cptr, mask, val);
 264         pvr2_hdw_commit_ctl(cip->chptr->channel.hdw);
 265         return ret;
 266 }
 267
 268 static ssize_t store_val_norm(struct device *class_dev,
 269                               struct device_attribute *attr,
 270                               const char *buf, size_t count)
 271 {
 272         struct pvr2_sysfs_ctl_item *cip;
 273         int ret;
 274         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
 275         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
 276                          cip->chptr, cip->ctl_id, (int)count, buf);
 277         ret = store_val_any(cip, 0, buf, count);
 278         if (!ret) ret = count;
 279         return ret;
 280 }
 281
 282 static ssize_t store_val_custom(struct device *class_dev,
 283                                 struct device_attribute *attr,
 284                                 const char *buf, size_t count)
 285 {
 286         struct pvr2_sysfs_ctl_item *cip;
 287         int ret;
 288         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
 289         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
 290                          cip->chptr, cip->ctl_id, (int)count, buf);
 291         ret = store_val_any(cip, 1, buf, count);
 292         if (!ret) ret = count;
 293         return ret;
 294 }
 295
 296 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 297 {
 298         struct pvr2_sysfs_ctl_item *cip;
 299         struct pvr2_ctrl *cptr;
 300         unsigned int cnt,acnt;
 301         int ret;
 302
 303         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 304         if (!cptr) return;
 305
 306         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
 307         if (!cip) return;
 308         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 309
 310         cip->cptr = cptr;
 311         cip->ctl_id = ctl_id;
 312
 313         cip->chptr = sfp;
 314         cip->item_next = NULL;
 315         if (sfp->item_last) {
 316                 sfp->item_last->item_next = cip;
 317         } else {
 318                 sfp->item_first = cip;
 319         }
 320         sfp->item_last = cip;
 321
 322         sysfs_attr_init(&cip->attr_name.attr);
 323         cip->attr_name.attr.name = "name";
 324         cip->attr_name.attr.mode = S_IRUGO;
 325         cip->attr_name.show = show_name;
 326
 327         sysfs_attr_init(&cip->attr_type.attr);
 328         cip->attr_type.attr.name = "type";
 329         cip->attr_type.attr.mode = S_IRUGO;
 330         cip->attr_type.show = show_type;
 331
 332         sysfs_attr_init(&cip->attr_min.attr);
 333         cip->attr_min.attr.name = "min_val";
 334         cip->attr_min.attr.mode = S_IRUGO;
 335         cip->attr_min.show = show_min;
 336
 337         sysfs_attr_init(&cip->attr_max.attr);
 338         cip->attr_max.attr.name = "max_val";
 339         cip->attr_max.attr.mode = S_IRUGO;
 340         cip->attr_max.show = show_max;
 341
 342         sysfs_attr_init(&cip->attr_def.attr);
 343         cip->attr_def.attr.name = "def_val";
 344         cip->attr_def.attr.mode = S_IRUGO;
 345         cip->attr_def.show = show_def;
 346
 347         sysfs_attr_init(&cip->attr_val.attr);
 348         cip->attr_val.attr.name = "cur_val";
 349         cip->attr_val.attr.mode = S_IRUGO;
 350
 351         sysfs_attr_init(&cip->attr_custom.attr);
 352         cip->attr_custom.attr.name = "custom_val";
 353         cip->attr_custom.attr.mode = S_IRUGO;
 354
 355         sysfs_attr_init(&cip->attr_enum.attr);
 356         cip->attr_enum.attr.name = "enum_val";
 357         cip->attr_enum.attr.mode = S_IRUGO;
 358         cip->attr_enum.show = show_enum;
 359
 360         sysfs_attr_init(&cip->attr_bits.attr);
 361         cip->attr_bits.attr.name = "bit_val";
 362         cip->attr_bits.attr.mode = S_IRUGO;
 363         cip->attr_bits.show = show_bits;
 364
 365         if (pvr2_ctrl_is_writable(cptr)) {
 366                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 367                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 368         }
 369
 370         acnt = 0;
 371         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 372         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 373         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 374         cip->attr_gen[acnt++] = &cip->attr_def.attr;
 375         cip->attr_val.show = show_val_norm;
 376         cip->attr_val.store = store_val_norm;
 377         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 378                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 379                 cip->attr_custom.show = show_val_custom;
 380                 cip->attr_custom.store = store_val_custom;
 381         }
 382         switch (pvr2_ctrl_get_type(cptr)) {
 383         case pvr2_ctl_enum:
 384                 // Control is an enumeration
 385                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 386                 break;
 387         case pvr2_ctl_int:
 388                 // Control is an integer
 389                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 390                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 391                 break;
 392         case pvr2_ctl_bitmask:
 393                 // Control is an bitmask
 394                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 395                 break;
 396         default: break;
 397         }
 398
 399         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 400                         pvr2_ctrl_get_name(cptr));
 401         cip->name[cnt] = 0;
 402         cip->grp.name = cip->name;
 403         cip->grp.attrs = cip->attr_gen;
 404
 405         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 406         if (ret) {
 407                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 408                            "sysfs_create_group error: %d",
 409                            ret);
 410                 return;
 411         }
 412         cip->created_ok = !0;
 413 }
 414
 415 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 416 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
 417                               char *);
 418 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
 419                              char *);
 420 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
 421                               const char *, size_t count);
 422
 423 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 424 {
 425         struct pvr2_sysfs_debugifc *dip;
 426         int ret;
 427
 428         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
 429         if (!dip) return;
 430         sysfs_attr_init(&dip->attr_debugcmd.attr);
 431         dip->attr_debugcmd.attr.name = "debugcmd";
 432         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 433         dip->attr_debugcmd.show = debugcmd_show;
 434         dip->attr_debugcmd.store = debugcmd_store;
 435         sysfs_attr_init(&dip->attr_debuginfo.attr);
 436         dip->attr_debuginfo.attr.name = "debuginfo";
 437         dip->attr_debuginfo.attr.mode = S_IRUGO;
 438         dip->attr_debuginfo.show = debuginfo_show;
 439         sfp->debugifc = dip;
 440         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 441         if (ret < 0) {
 442                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 443                            "device_create_file error: %d",
 444                            ret);
 445         } else {
 446                 dip->debugcmd_created_ok = !0;
 447         }
 448         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 449         if (ret < 0) {
 450                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 451                            "device_create_file error: %d",
 452                            ret);
 453         } else {
 454                 dip->debuginfo_created_ok = !0;
 455         }
 456 }
 457
 458
 459 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 460 {
 461         if (!sfp->debugifc) return;
 462         if (sfp->debugifc->debuginfo_created_ok) {
 463                 device_remove_file(sfp->class_dev,
 464                                          &sfp->debugifc->attr_debuginfo);
 465         }
 466         if (sfp->debugifc->debugcmd_created_ok) {
 467                 device_remove_file(sfp->class_dev,
 468                                          &sfp->debugifc->attr_debugcmd);
 469         }
 470         kfree(sfp->debugifc);
 471         sfp->debugifc = NULL;
 472 }
 473 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 474
 475
 476 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 477 {
 478         unsigned int idx,cnt;
 479         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 480         for (idx = 0; idx < cnt; idx++) {
 481                 pvr2_sysfs_add_control(sfp,idx);
 482         }
 483 }
 484
 485
 486 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 487 {
 488         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 489         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 490                 cip2 = cip1->item_next;
 491                 if (cip1->created_ok) {
 492                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 493                 }
 494                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 495                 kfree(cip1);
 496         }
 497 }
 498
 499
 500 static void pvr2_sysfs_class_release(struct class *class)
 501 {
 502         struct pvr2_sysfs_class *clp;
 503         clp = container_of(class,struct pvr2_sysfs_class,class);
 504         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 505         kfree(clp);
 506 }
 507
 508
 509 static void pvr2_sysfs_release(struct device *class_dev)
 510 {
 511         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 512         kfree(class_dev);
 513 }
 514
 515
 516 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 517 {
 518         struct device *dev;
 519         if (!sfp->class_dev) return;
 520 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 521         pvr2_sysfs_tear_down_debugifc(sfp);
 522 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 523         pvr2_sysfs_tear_down_controls(sfp);
 524         if (sfp->hdw_desc_created_ok) {
 525                 device_remove_file(sfp->class_dev,
 526                                    &sfp->attr_hdw_desc);
 527         }
 528         if (sfp->hdw_name_created_ok) {
 529                 device_remove_file(sfp->class_dev,
 530                                    &sfp->attr_hdw_name);
 531         }
 532         if (sfp->bus_info_created_ok) {
 533                 device_remove_file(sfp->class_dev,
 534                                          &sfp->attr_bus_info);
 535         }
 536         if (sfp->v4l_minor_number_created_ok) {
 537                 device_remove_file(sfp->class_dev,
 538                                          &sfp->attr_v4l_minor_number);
 539         }
 540         if (sfp->v4l_radio_minor_number_created_ok) {
 541                 device_remove_file(sfp->class_dev,
 542                                          &sfp->attr_v4l_radio_minor_number);
 543         }
 544         if (sfp->unit_number_created_ok) {
 545                 device_remove_file(sfp->class_dev,
 546                                          &sfp->attr_unit_number);
 547         }
 548         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 549         dev_set_drvdata(sfp->class_dev, NULL);
 550         dev = sfp->class_dev->parent;
 551         sfp->class_dev->parent = NULL;
 552         put_device(dev);
 553         device_unregister(sfp->class_dev);
 554         sfp->class_dev = NULL;
 555 }
 556
 557
 558 static ssize_t v4l_minor_number_show(struct device *class_dev,
 559                                      struct device_attribute *attr, char *buf)
 560 {
 561         struct pvr2_sysfs *sfp;
 562         sfp = dev_get_drvdata(class_dev);
 563         if (!sfp) return -EINVAL;
 564         return scnprintf(buf,PAGE_SIZE,"%d\n",
 565                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 566                                                        pvr2_v4l_type_video));
 567 }
 568
 569
 570 static ssize_t bus_info_show(struct device *class_dev,
 571                              struct device_attribute *attr, char *buf)
 572 {
 573         struct pvr2_sysfs *sfp;
 574         sfp = dev_get_drvdata(class_dev);
 575         if (!sfp) return -EINVAL;
 576         return scnprintf(buf,PAGE_SIZE,"%s\n",
 577                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
 578 }
 579
 580
 581 static ssize_t hdw_name_show(struct device *class_dev,
 582                              struct device_attribute *attr, char *buf)
 583 {
 584         struct pvr2_sysfs *sfp;
 585         sfp = dev_get_drvdata(class_dev);
 586         if (!sfp) return -EINVAL;
 587         return scnprintf(buf,PAGE_SIZE,"%s\n",
 588                          pvr2_hdw_get_type(sfp->channel.hdw));
 589 }
 590
 591
 592 static ssize_t hdw_desc_show(struct device *class_dev,
 593                              struct device_attribute *attr, char *buf)
 594 {
 595         struct pvr2_sysfs *sfp;
 596         sfp = dev_get_drvdata(class_dev);
 597         if (!sfp) return -EINVAL;
 598         return scnprintf(buf,PAGE_SIZE,"%s\n",
 599                          pvr2_hdw_get_desc(sfp->channel.hdw));
 600 }
 601
 602
 603 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
 604                                            struct device_attribute *attr,
 605                                            char *buf)
 606 {
 607         struct pvr2_sysfs *sfp;
 608         sfp = dev_get_drvdata(class_dev);
 609         if (!sfp) return -EINVAL;
 610         return scnprintf(buf,PAGE_SIZE,"%d\n",
 611                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 612                                                        pvr2_v4l_type_radio));
 613 }
 614
 615
 616 static ssize_t unit_number_show(struct device *class_dev,
 617                                 struct device_attribute *attr, char *buf)
 618 {
 619         struct pvr2_sysfs *sfp;
 620         sfp = dev_get_drvdata(class_dev);
 621         if (!sfp) return -EINVAL;
 622         return scnprintf(buf,PAGE_SIZE,"%d\n",
 623                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 624 }
 625
 626
 627 static void class_dev_create(struct pvr2_sysfs *sfp,
 628                              struct pvr2_sysfs_class *class_ptr)
 629 {
 630         struct usb_device *usb_dev;
 631         struct device *class_dev;
 632         int ret;
 633
 634         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 635         if (!usb_dev) return;
 636         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 637         if (!class_dev) return;
 638
 639         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 640
 641         class_dev->class = &class_ptr->class;
 642
 643         dev_set_name(class_dev, "%s",
 644                      pvr2_hdw_get_device_identifier(sfp->channel.hdw));
 645
 646         class_dev->parent = get_device(&usb_dev->dev);
 647
 648         sfp->class_dev = class_dev;
 649         dev_set_drvdata(class_dev, sfp);
 650         ret = device_register(class_dev);
 651         if (ret) {
 652                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 653                            "device_register failed");
 654                 put_device(class_dev);
 655                 return;
 656         }
 657
 658         sysfs_attr_init(&sfp->attr_v4l_minor_number.attr);
 659         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 660         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 661         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 662         sfp->attr_v4l_minor_number.store = NULL;
 663         ret = device_create_file(sfp->class_dev,
 664                                        &sfp->attr_v4l_minor_number);
 665         if (ret < 0) {
 666                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 667                            "device_create_file error: %d",
 668                            ret);
 669         } else {
 670                 sfp->v4l_minor_number_created_ok = !0;
 671         }
 672
 673         sysfs_attr_init(&sfp->attr_v4l_radio_minor_number.attr);
 674         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 675         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 676         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 677         sfp->attr_v4l_radio_minor_number.store = NULL;
 678         ret = device_create_file(sfp->class_dev,
 679                                        &sfp->attr_v4l_radio_minor_number);
 680         if (ret < 0) {
 681                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 682                            "device_create_file error: %d",
 683                            ret);
 684         } else {
 685                 sfp->v4l_radio_minor_number_created_ok = !0;
 686         }
 687
 688         sysfs_attr_init(&sfp->attr_unit_number.attr);
 689         sfp->attr_unit_number.attr.name = "unit_number";
 690         sfp->attr_unit_number.attr.mode = S_IRUGO;
 691         sfp->attr_unit_number.show = unit_number_show;
 692         sfp->attr_unit_number.store = NULL;
 693         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 694         if (ret < 0) {
 695                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 696                            "device_create_file error: %d",
 697                            ret);
 698         } else {
 699                 sfp->unit_number_created_ok = !0;
 700         }
 701
 702         sysfs_attr_init(&sfp->attr_bus_info.attr);
 703         sfp->attr_bus_info.attr.name = "bus_info_str";
 704         sfp->attr_bus_info.attr.mode = S_IRUGO;
 705         sfp->attr_bus_info.show = bus_info_show;
 706         sfp->attr_bus_info.store = NULL;
 707         ret = device_create_file(sfp->class_dev,
 708                                        &sfp->attr_bus_info);
 709         if (ret < 0) {
 710                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 711                            "device_create_file error: %d",
 712                            ret);
 713         } else {
 714                 sfp->bus_info_created_ok = !0;
 715         }
 716
 717         sysfs_attr_init(&sfp->attr_hdw_name.attr);
 718         sfp->attr_hdw_name.attr.name = "device_hardware_type";
 719         sfp->attr_hdw_name.attr.mode = S_IRUGO;
 720         sfp->attr_hdw_name.show = hdw_name_show;
 721         sfp->attr_hdw_name.store = NULL;
 722         ret = device_create_file(sfp->class_dev,
 723                                  &sfp->attr_hdw_name);
 724         if (ret < 0) {
 725                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 726                            "device_create_file error: %d",
 727                            ret);
 728         } else {
 729                 sfp->hdw_name_created_ok = !0;
 730         }
 731
 732         sysfs_attr_init(&sfp->attr_hdw_desc.attr);
 733         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
 734         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
 735         sfp->attr_hdw_desc.show = hdw_desc_show;
 736         sfp->attr_hdw_desc.store = NULL;
 737         ret = device_create_file(sfp->class_dev,
 738                                  &sfp->attr_hdw_desc);
 739         if (ret < 0) {
 740                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 741                            "device_create_file error: %d",
 742                            ret);
 743         } else {
 744                 sfp->hdw_desc_created_ok = !0;
 745         }
 746
 747         pvr2_sysfs_add_controls(sfp);
 748 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 749         pvr2_sysfs_add_debugifc(sfp);
 750 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 751 }
 752
 753
 754 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 755 {
 756         struct pvr2_sysfs *sfp;
 757         sfp = container_of(chp,struct pvr2_sysfs,channel);
 758         if (!sfp->channel.mc_head->disconnect_flag) return;
 759         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 760         class_dev_destroy(sfp);
 761         pvr2_channel_done(&sfp->channel);
 762         kfree(sfp);
 763 }
 764
 765
 766 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 767                                      struct pvr2_sysfs_class *class_ptr)
 768 {
 769         struct pvr2_sysfs *sfp;
 770         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 771         if (!sfp) return sfp;
 772         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 773         pvr2_channel_init(&sfp->channel,mp);
 774         sfp->channel.check_func = pvr2_sysfs_internal_check;
 775
 776         class_dev_create(sfp,class_ptr);
 777         return sfp;
 778 }
 779
 780
 781
 782 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 783 {
 784         struct pvr2_sysfs_class *clp;
 785         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 786         if (!clp) return clp;
 787         pvr2_sysfs_trace("Creating and registering pvr2_sysfs_class id=%p",
 788                          clp);
 789         clp->class.name = "pvrusb2";
 790         clp->class.class_release = pvr2_sysfs_class_release;
 791         clp->class.dev_release = pvr2_sysfs_release;
 792         if (class_register(&clp->class)) {
 793                 pvr2_sysfs_trace(
 794                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 795                 kfree(clp);
 796                 clp = NULL;
 797         }
 798         return clp;
 799 }
 800
 801
 802 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
 803 {
 804         pvr2_sysfs_trace("Unregistering pvr2_sysfs_class id=%p", clp);
 805         class_unregister(&clp->class);
 806 }
 807
 808
 809 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 810 static ssize_t debuginfo_show(struct device *class_dev,
 811                               struct device_attribute *attr, char *buf)
 812 {
 813         struct pvr2_sysfs *sfp;
 814         sfp = dev_get_drvdata(class_dev);
 815         if (!sfp) return -EINVAL;
 816         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
 817         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
 818 }
 819
 820
 821 static ssize_t debugcmd_show(struct device *class_dev,
 822                              struct device_attribute *attr, char *buf)
 823 {
 824         struct pvr2_sysfs *sfp;
 825         sfp = dev_get_drvdata(class_dev);
 826         if (!sfp) return -EINVAL;
 827         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
 828 }
 829
 830
 831 static ssize_t debugcmd_store(struct device *class_dev,
 832                               struct device_attribute *attr,
 833                               const char *buf, size_t count)
 834 {
 835         struct pvr2_sysfs *sfp;
 836         int ret;
 837
 838         sfp = dev_get_drvdata(class_dev);
 839         if (!sfp) return -EINVAL;
 840
 841         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
 842         if (ret < 0) return ret;
 843         return count;
 844 }
 845 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */