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  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include <linux/string.h>
  22 #include <linux/slab.h>
  23 #include "pvrusb2-sysfs.h"
  24 #include "pvrusb2-hdw.h"
  25 #include "pvrusb2-debug.h"
  26 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  27 #include "pvrusb2-debugifc.h"
  28 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  29
  30 #define pvr2_sysfs_trace(...) pvr2_trace(PVR2_TRACE_SYSFS,__VA_ARGS__)
  31
  32 struct pvr2_sysfs {
  33         struct pvr2_channel channel;
  34         struct device *class_dev;
  35 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  36         struct pvr2_sysfs_debugifc *debugifc;
  37 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  38         struct pvr2_sysfs_ctl_item *item_first;
  39         struct pvr2_sysfs_ctl_item *item_last;
  40         struct device_attribute attr_v4l_minor_number;
  41         struct device_attribute attr_v4l_radio_minor_number;
  42         struct device_attribute attr_unit_number;
  43         struct device_attribute attr_bus_info;
  44         struct device_attribute attr_hdw_name;
  45         struct device_attribute attr_hdw_desc;
  46         int v4l_minor_number_created_ok;
  47         int v4l_radio_minor_number_created_ok;
  48         int unit_number_created_ok;
  49         int bus_info_created_ok;
  50         int hdw_name_created_ok;
  51         int hdw_desc_created_ok;
  52 };
  53
  54 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
  55 struct pvr2_sysfs_debugifc {
  56         struct device_attribute attr_debugcmd;
  57         struct device_attribute attr_debuginfo;
  58         int debugcmd_created_ok;
  59         int debuginfo_created_ok;
  60 };
  61 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
  62
  63 struct pvr2_sysfs_ctl_item {
  64         struct device_attribute attr_name;
  65         struct device_attribute attr_type;
  66         struct device_attribute attr_min;
  67         struct device_attribute attr_max;
  68         struct device_attribute attr_def;
  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         int ctl_id;
  75         struct pvr2_sysfs *chptr;
  76         struct pvr2_sysfs_ctl_item *item_next;
  77         struct attribute *attr_gen[8];
  78         struct attribute_group grp;
  79         int created_ok;
  80         char name[80];
  81 };
  82
  83 struct pvr2_sysfs_class {
  84         struct class class;
  85 };
  86
  87 static ssize_t show_name(struct device *class_dev,
  88                          struct device_attribute *attr,
  89                          char *buf)
  90 {
  91         struct pvr2_sysfs_ctl_item *cip;
  92         const char *name;
  93         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_name);
  94         name = pvr2_ctrl_get_desc(cip->cptr);
  95         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",
  96                          cip->chptr, cip->ctl_id, name);
  97         if (!name) return -EINVAL;
  98         return scnprintf(buf, PAGE_SIZE, "%s\n", name);
  99 }
 100
 101 static ssize_t show_type(struct device *class_dev,
 102                          struct device_attribute *attr,
 103                          char *buf)
 104 {
 105         struct pvr2_sysfs_ctl_item *cip;
 106         const char *name;
 107         enum pvr2_ctl_type tp;
 108         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_type);
 109         tp = pvr2_ctrl_get_type(cip->cptr);
 110         switch (tp) {
 111         case pvr2_ctl_int: name = "integer"; break;
 112         case pvr2_ctl_enum: name = "enum"; break;
 113         case pvr2_ctl_bitmask: name = "bitmask"; break;
 114         case pvr2_ctl_bool: name = "boolean"; break;
 115         default: name = "?"; break;
 116         }
 117         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",
 118                          cip->chptr, cip->ctl_id, name);
 119         return scnprintf(buf, PAGE_SIZE, "%s\n", name);
 120 }
 121
 122 static ssize_t show_min(struct device *class_dev,
 123                         struct device_attribute *attr,
 124                         char *buf)
 125 {
 126         struct pvr2_sysfs_ctl_item *cip;
 127         long val;
 128         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_min);
 129         val = pvr2_ctrl_get_min(cip->cptr);
 130         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",
 131                          cip->chptr, cip->ctl_id, val);
 132         return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
 133 }
 134
 135 static ssize_t show_max(struct device *class_dev,
 136                         struct device_attribute *attr,
 137                         char *buf)
 138 {
 139         struct pvr2_sysfs_ctl_item *cip;
 140         long val;
 141         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_max);
 142         val = pvr2_ctrl_get_max(cip->cptr);
 143         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",
 144                          cip->chptr, cip->ctl_id, val);
 145         return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
 146 }
 147
 148 static ssize_t show_def(struct device *class_dev,
 149                         struct device_attribute *attr,
 150                         char *buf)
 151 {
 152         struct pvr2_sysfs_ctl_item *cip;
 153         int val;
 154         int ret;
 155         unsigned int cnt = 0;
 156         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_def);
 157         ret = pvr2_ctrl_get_def(cip->cptr, &val);
 158         if (ret < 0) return ret;
 159         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
 160                                      buf, PAGE_SIZE - 1, &cnt);
 161         pvr2_sysfs_trace("pvr2_sysfs(%p) show_def(cid=%d) is %.*s (%d)",
 162                          cip->chptr, cip->ctl_id, cnt, buf, val);
 163         buf[cnt] = '\n';
 164         return cnt + 1;
 165 }
 166
 167 static ssize_t show_val_norm(struct device *class_dev,
 168                              struct device_attribute *attr,
 169                              char *buf)
 170 {
 171         struct pvr2_sysfs_ctl_item *cip;
 172         int val;
 173         int ret;
 174         unsigned int cnt = 0;
 175         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
 176         ret = pvr2_ctrl_get_value(cip->cptr, &val);
 177         if (ret < 0) return ret;
 178         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
 179                                      buf, PAGE_SIZE - 1, &cnt);
 180         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
 181                          cip->chptr, cip->ctl_id, cnt, buf, val);
 182         buf[cnt] = '\n';
 183         return cnt+1;
 184 }
 185
 186 static ssize_t show_val_custom(struct device *class_dev,
 187                                struct device_attribute *attr,
 188                                char *buf)
 189 {
 190         struct pvr2_sysfs_ctl_item *cip;
 191         int val;
 192         int ret;
 193         unsigned int cnt = 0;
 194         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
 195         ret = pvr2_ctrl_get_value(cip->cptr, &val);
 196         if (ret < 0) return ret;
 197         ret = pvr2_ctrl_custom_value_to_sym(cip->cptr, ~0, val,
 198                                             buf, PAGE_SIZE - 1, &cnt);
 199         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
 200                          cip->chptr, cip->ctl_id, cnt, buf, val);
 201         buf[cnt] = '\n';
 202         return cnt+1;
 203 }
 204
 205 static ssize_t show_enum(struct device *class_dev,
 206                          struct device_attribute *attr,
 207                          char *buf)
 208 {
 209         struct pvr2_sysfs_ctl_item *cip;
 210         long val;
 211         unsigned int bcnt, ccnt, ecnt;
 212         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_enum);
 213         ecnt = pvr2_ctrl_get_cnt(cip->cptr);
 214         bcnt = 0;
 215         for (val = 0; val < ecnt; val++) {
 216                 pvr2_ctrl_get_valname(cip->cptr, val, buf + bcnt,
 217                                       PAGE_SIZE - bcnt, &ccnt);
 218                 if (!ccnt) continue;
 219                 bcnt += ccnt;
 220                 if (bcnt >= PAGE_SIZE) break;
 221                 buf[bcnt] = '\n';
 222                 bcnt++;
 223         }
 224         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",
 225                          cip->chptr, cip->ctl_id);
 226         return bcnt;
 227 }
 228
 229 static ssize_t show_bits(struct device *class_dev,
 230                          struct device_attribute *attr,
 231                          char *buf)
 232 {
 233         struct pvr2_sysfs_ctl_item *cip;
 234         int valid_bits, msk;
 235         unsigned int bcnt, ccnt;
 236         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_bits);
 237         valid_bits = pvr2_ctrl_get_mask(cip->cptr);
 238         bcnt = 0;
 239         for (msk = 1; valid_bits; msk <<= 1) {
 240                 if (!(msk & valid_bits)) continue;
 241                 valid_bits &= ~msk;
 242                 pvr2_ctrl_get_valname(cip->cptr, msk, buf + bcnt,
 243                                       PAGE_SIZE - bcnt, &ccnt);
 244                 bcnt += ccnt;
 245                 if (bcnt >= PAGE_SIZE) break;
 246                 buf[bcnt] = '\n';
 247                 bcnt++;
 248         }
 249         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",
 250                          cip->chptr, cip->ctl_id);
 251         return bcnt;
 252 }
 253
 254 static int store_val_any(struct pvr2_sysfs_ctl_item *cip, int customfl,
 255                          const char *buf,unsigned int count)
 256 {
 257         int ret;
 258         int mask,val;
 259         if (customfl) {
 260                 ret = pvr2_ctrl_custom_sym_to_value(cip->cptr, buf, count,
 261                                                     &mask, &val);
 262         } else {
 263                 ret = pvr2_ctrl_sym_to_value(cip->cptr, buf, count,
 264                                              &mask, &val);
 265         }
 266         if (ret < 0) return ret;
 267         ret = pvr2_ctrl_set_mask_value(cip->cptr, mask, val);
 268         pvr2_hdw_commit_ctl(cip->chptr->channel.hdw);
 269         return ret;
 270 }
 271
 272 static ssize_t store_val_norm(struct device *class_dev,
 273                               struct device_attribute *attr,
 274                               const char *buf, size_t count)
 275 {
 276         struct pvr2_sysfs_ctl_item *cip;
 277         int ret;
 278         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
 279         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
 280                          cip->chptr, cip->ctl_id, (int)count, buf);
 281         ret = store_val_any(cip, 0, buf, count);
 282         if (!ret) ret = count;
 283         return ret;
 284 }
 285
 286 static ssize_t store_val_custom(struct device *class_dev,
 287                                 struct device_attribute *attr,
 288                                 const char *buf, size_t count)
 289 {
 290         struct pvr2_sysfs_ctl_item *cip;
 291         int ret;
 292         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
 293         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
 294                          cip->chptr, cip->ctl_id, (int)count, buf);
 295         ret = store_val_any(cip, 1, buf, count);
 296         if (!ret) ret = count;
 297         return ret;
 298 }
 299
 300 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 301 {
 302         struct pvr2_sysfs_ctl_item *cip;
 303         struct pvr2_ctrl *cptr;
 304         unsigned int cnt,acnt;
 305         int ret;
 306
 307         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 308         if (!cptr) return;
 309
 310         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
 311         if (!cip) return;
 312         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 313
 314         cip->cptr = cptr;
 315         cip->ctl_id = ctl_id;
 316
 317         cip->chptr = sfp;
 318         cip->item_next = NULL;
 319         if (sfp->item_last) {
 320                 sfp->item_last->item_next = cip;
 321         } else {
 322                 sfp->item_first = cip;
 323         }
 324         sfp->item_last = cip;
 325
 326         sysfs_attr_init(&cip->attr_name.attr);
 327         cip->attr_name.attr.name = "name";
 328         cip->attr_name.attr.mode = S_IRUGO;
 329         cip->attr_name.show = show_name;
 330
 331         sysfs_attr_init(&cip->attr_type.attr);
 332         cip->attr_type.attr.name = "type";
 333         cip->attr_type.attr.mode = S_IRUGO;
 334         cip->attr_type.show = show_type;
 335
 336         sysfs_attr_init(&cip->attr_min.attr);
 337         cip->attr_min.attr.name = "min_val";
 338         cip->attr_min.attr.mode = S_IRUGO;
 339         cip->attr_min.show = show_min;
 340
 341         sysfs_attr_init(&cip->attr_max.attr);
 342         cip->attr_max.attr.name = "max_val";
 343         cip->attr_max.attr.mode = S_IRUGO;
 344         cip->attr_max.show = show_max;
 345
 346         sysfs_attr_init(&cip->attr_def.attr);
 347         cip->attr_def.attr.name = "def_val";
 348         cip->attr_def.attr.mode = S_IRUGO;
 349         cip->attr_def.show = show_def;
 350
 351         sysfs_attr_init(&cip->attr_val.attr);
 352         cip->attr_val.attr.name = "cur_val";
 353         cip->attr_val.attr.mode = S_IRUGO;
 354
 355         sysfs_attr_init(&cip->attr_custom.attr);
 356         cip->attr_custom.attr.name = "custom_val";
 357         cip->attr_custom.attr.mode = S_IRUGO;
 358
 359         sysfs_attr_init(&cip->attr_enum.attr);
 360         cip->attr_enum.attr.name = "enum_val";
 361         cip->attr_enum.attr.mode = S_IRUGO;
 362         cip->attr_enum.show = show_enum;
 363
 364         sysfs_attr_init(&cip->attr_bits.attr);
 365         cip->attr_bits.attr.name = "bit_val";
 366         cip->attr_bits.attr.mode = S_IRUGO;
 367         cip->attr_bits.show = show_bits;
 368
 369         if (pvr2_ctrl_is_writable(cptr)) {
 370                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 371                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 372         }
 373
 374         acnt = 0;
 375         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 376         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 377         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 378         cip->attr_gen[acnt++] = &cip->attr_def.attr;
 379         cip->attr_val.show = show_val_norm;
 380         cip->attr_val.store = store_val_norm;
 381         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 382                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 383                 cip->attr_custom.show = show_val_custom;
 384                 cip->attr_custom.store = store_val_custom;
 385         }
 386         switch (pvr2_ctrl_get_type(cptr)) {
 387         case pvr2_ctl_enum:
 388                 // Control is an enumeration
 389                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 390                 break;
 391         case pvr2_ctl_int:
 392                 // Control is an integer
 393                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 394                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 395                 break;
 396         case pvr2_ctl_bitmask:
 397                 // Control is an bitmask
 398                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 399                 break;
 400         default: break;
 401         }
 402
 403         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 404                         pvr2_ctrl_get_name(cptr));
 405         cip->name[cnt] = 0;
 406         cip->grp.name = cip->name;
 407         cip->grp.attrs = cip->attr_gen;
 408
 409         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 410         if (ret) {
 411                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 412                            "sysfs_create_group error: %d",
 413                            ret);
 414                 return;
 415         }
 416         cip->created_ok = !0;
 417 }
 418
 419 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 420 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
 421                               char *);
 422 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
 423                              char *);
 424 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
 425                               const char *, size_t count);
 426
 427 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 428 {
 429         struct pvr2_sysfs_debugifc *dip;
 430         int ret;
 431
 432         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
 433         if (!dip) return;
 434         sysfs_attr_init(&dip->attr_debugcmd.attr);
 435         dip->attr_debugcmd.attr.name = "debugcmd";
 436         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 437         dip->attr_debugcmd.show = debugcmd_show;
 438         dip->attr_debugcmd.store = debugcmd_store;
 439         sysfs_attr_init(&dip->attr_debuginfo.attr);
 440         dip->attr_debuginfo.attr.name = "debuginfo";
 441         dip->attr_debuginfo.attr.mode = S_IRUGO;
 442         dip->attr_debuginfo.show = debuginfo_show;
 443         sfp->debugifc = dip;
 444         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 445         if (ret < 0) {
 446                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 447                            "device_create_file error: %d",
 448                            ret);
 449         } else {
 450                 dip->debugcmd_created_ok = !0;
 451         }
 452         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 453         if (ret < 0) {
 454                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 455                            "device_create_file error: %d",
 456                            ret);
 457         } else {
 458                 dip->debuginfo_created_ok = !0;
 459         }
 460 }
 461
 462
 463 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 464 {
 465         if (!sfp->debugifc) return;
 466         if (sfp->debugifc->debuginfo_created_ok) {
 467                 device_remove_file(sfp->class_dev,
 468                                          &sfp->debugifc->attr_debuginfo);
 469         }
 470         if (sfp->debugifc->debugcmd_created_ok) {
 471                 device_remove_file(sfp->class_dev,
 472                                          &sfp->debugifc->attr_debugcmd);
 473         }
 474         kfree(sfp->debugifc);
 475         sfp->debugifc = NULL;
 476 }
 477 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 478
 479
 480 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 481 {
 482         unsigned int idx,cnt;
 483         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 484         for (idx = 0; idx < cnt; idx++) {
 485                 pvr2_sysfs_add_control(sfp,idx);
 486         }
 487 }
 488
 489
 490 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 491 {
 492         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 493         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 494                 cip2 = cip1->item_next;
 495                 if (cip1->created_ok) {
 496                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 497                 }
 498                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 499                 kfree(cip1);
 500         }
 501 }
 502
 503
 504 static void pvr2_sysfs_class_release(struct class *class)
 505 {
 506         struct pvr2_sysfs_class *clp;
 507         clp = container_of(class,struct pvr2_sysfs_class,class);
 508         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 509         kfree(clp);
 510 }
 511
 512
 513 static void pvr2_sysfs_release(struct device *class_dev)
 514 {
 515         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 516         kfree(class_dev);
 517 }
 518
 519
 520 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 521 {
 522         struct device *dev;
 523         if (!sfp->class_dev) return;
 524 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 525         pvr2_sysfs_tear_down_debugifc(sfp);
 526 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 527         pvr2_sysfs_tear_down_controls(sfp);
 528         if (sfp->hdw_desc_created_ok) {
 529                 device_remove_file(sfp->class_dev,
 530                                    &sfp->attr_hdw_desc);
 531         }
 532         if (sfp->hdw_name_created_ok) {
 533                 device_remove_file(sfp->class_dev,
 534                                    &sfp->attr_hdw_name);
 535         }
 536         if (sfp->bus_info_created_ok) {
 537                 device_remove_file(sfp->class_dev,
 538                                          &sfp->attr_bus_info);
 539         }
 540         if (sfp->v4l_minor_number_created_ok) {
 541                 device_remove_file(sfp->class_dev,
 542                                          &sfp->attr_v4l_minor_number);
 543         }
 544         if (sfp->v4l_radio_minor_number_created_ok) {
 545                 device_remove_file(sfp->class_dev,
 546                                          &sfp->attr_v4l_radio_minor_number);
 547         }
 548         if (sfp->unit_number_created_ok) {
 549                 device_remove_file(sfp->class_dev,
 550                                          &sfp->attr_unit_number);
 551         }
 552         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 553         dev_set_drvdata(sfp->class_dev, NULL);
 554         dev = sfp->class_dev->parent;
 555         sfp->class_dev->parent = NULL;
 556         put_device(dev);
 557         device_unregister(sfp->class_dev);
 558         sfp->class_dev = NULL;
 559 }
 560
 561
 562 static ssize_t v4l_minor_number_show(struct device *class_dev,
 563                                      struct device_attribute *attr, char *buf)
 564 {
 565         struct pvr2_sysfs *sfp;
 566         sfp = dev_get_drvdata(class_dev);
 567         if (!sfp) return -EINVAL;
 568         return scnprintf(buf,PAGE_SIZE,"%d\n",
 569                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 570                                                        pvr2_v4l_type_video));
 571 }
 572
 573
 574 static ssize_t bus_info_show(struct device *class_dev,
 575                              struct device_attribute *attr, char *buf)
 576 {
 577         struct pvr2_sysfs *sfp;
 578         sfp = dev_get_drvdata(class_dev);
 579         if (!sfp) return -EINVAL;
 580         return scnprintf(buf,PAGE_SIZE,"%s\n",
 581                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
 582 }
 583
 584
 585 static ssize_t hdw_name_show(struct device *class_dev,
 586                              struct device_attribute *attr, char *buf)
 587 {
 588         struct pvr2_sysfs *sfp;
 589         sfp = dev_get_drvdata(class_dev);
 590         if (!sfp) return -EINVAL;
 591         return scnprintf(buf,PAGE_SIZE,"%s\n",
 592                          pvr2_hdw_get_type(sfp->channel.hdw));
 593 }
 594
 595
 596 static ssize_t hdw_desc_show(struct device *class_dev,
 597                              struct device_attribute *attr, char *buf)
 598 {
 599         struct pvr2_sysfs *sfp;
 600         sfp = dev_get_drvdata(class_dev);
 601         if (!sfp) return -EINVAL;
 602         return scnprintf(buf,PAGE_SIZE,"%s\n",
 603                          pvr2_hdw_get_desc(sfp->channel.hdw));
 604 }
 605
 606
 607 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
 608                                            struct device_attribute *attr,
 609                                            char *buf)
 610 {
 611         struct pvr2_sysfs *sfp;
 612         sfp = dev_get_drvdata(class_dev);
 613         if (!sfp) return -EINVAL;
 614         return scnprintf(buf,PAGE_SIZE,"%d\n",
 615                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 616                                                        pvr2_v4l_type_radio));
 617 }
 618
 619
 620 static ssize_t unit_number_show(struct device *class_dev,
 621                                 struct device_attribute *attr, char *buf)
 622 {
 623         struct pvr2_sysfs *sfp;
 624         sfp = dev_get_drvdata(class_dev);
 625         if (!sfp) return -EINVAL;
 626         return scnprintf(buf,PAGE_SIZE,"%d\n",
 627                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 628 }
 629
 630
 631 static void class_dev_create(struct pvr2_sysfs *sfp,
 632                              struct pvr2_sysfs_class *class_ptr)
 633 {
 634         struct usb_device *usb_dev;
 635         struct device *class_dev;
 636         int ret;
 637
 638         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 639         if (!usb_dev) return;
 640         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 641         if (!class_dev) return;
 642
 643         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 644
 645         class_dev->class = &class_ptr->class;
 646
 647         dev_set_name(class_dev, "%s",
 648                      pvr2_hdw_get_device_identifier(sfp->channel.hdw));
 649
 650         class_dev->parent = get_device(&usb_dev->dev);
 651
 652         sfp->class_dev = class_dev;
 653         dev_set_drvdata(class_dev, sfp);
 654         ret = device_register(class_dev);
 655         if (ret) {
 656                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 657                            "device_register failed");
 658                 put_device(class_dev);
 659                 return;
 660         }
 661
 662         sysfs_attr_init(&sfp->attr_v4l_minor_number.attr);
 663         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 664         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 665         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 666         sfp->attr_v4l_minor_number.store = NULL;
 667         ret = device_create_file(sfp->class_dev,
 668                                        &sfp->attr_v4l_minor_number);
 669         if (ret < 0) {
 670                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 671                            "device_create_file error: %d",
 672                            ret);
 673         } else {
 674                 sfp->v4l_minor_number_created_ok = !0;
 675         }
 676
 677         sysfs_attr_init(&sfp->attr_v4l_radio_minor_number.attr);
 678         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 679         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 680         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 681         sfp->attr_v4l_radio_minor_number.store = NULL;
 682         ret = device_create_file(sfp->class_dev,
 683                                        &sfp->attr_v4l_radio_minor_number);
 684         if (ret < 0) {
 685                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 686                            "device_create_file error: %d",
 687                            ret);
 688         } else {
 689                 sfp->v4l_radio_minor_number_created_ok = !0;
 690         }
 691
 692         sysfs_attr_init(&sfp->attr_unit_number.attr);
 693         sfp->attr_unit_number.attr.name = "unit_number";
 694         sfp->attr_unit_number.attr.mode = S_IRUGO;
 695         sfp->attr_unit_number.show = unit_number_show;
 696         sfp->attr_unit_number.store = NULL;
 697         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 698         if (ret < 0) {
 699                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 700                            "device_create_file error: %d",
 701                            ret);
 702         } else {
 703                 sfp->unit_number_created_ok = !0;
 704         }
 705
 706         sysfs_attr_init(&sfp->attr_bus_info.attr);
 707         sfp->attr_bus_info.attr.name = "bus_info_str";
 708         sfp->attr_bus_info.attr.mode = S_IRUGO;
 709         sfp->attr_bus_info.show = bus_info_show;
 710         sfp->attr_bus_info.store = NULL;
 711         ret = device_create_file(sfp->class_dev,
 712                                        &sfp->attr_bus_info);
 713         if (ret < 0) {
 714                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 715                            "device_create_file error: %d",
 716                            ret);
 717         } else {
 718                 sfp->bus_info_created_ok = !0;
 719         }
 720
 721         sysfs_attr_init(&sfp->attr_hdw_name.attr);
 722         sfp->attr_hdw_name.attr.name = "device_hardware_type";
 723         sfp->attr_hdw_name.attr.mode = S_IRUGO;
 724         sfp->attr_hdw_name.show = hdw_name_show;
 725         sfp->attr_hdw_name.store = NULL;
 726         ret = device_create_file(sfp->class_dev,
 727                                  &sfp->attr_hdw_name);
 728         if (ret < 0) {
 729                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 730                            "device_create_file error: %d",
 731                            ret);
 732         } else {
 733                 sfp->hdw_name_created_ok = !0;
 734         }
 735
 736         sysfs_attr_init(&sfp->attr_hdw_desc.attr);
 737         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
 738         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
 739         sfp->attr_hdw_desc.show = hdw_desc_show;
 740         sfp->attr_hdw_desc.store = NULL;
 741         ret = device_create_file(sfp->class_dev,
 742                                  &sfp->attr_hdw_desc);
 743         if (ret < 0) {
 744                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 745                            "device_create_file error: %d",
 746                            ret);
 747         } else {
 748                 sfp->hdw_desc_created_ok = !0;
 749         }
 750
 751         pvr2_sysfs_add_controls(sfp);
 752 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 753         pvr2_sysfs_add_debugifc(sfp);
 754 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 755 }
 756
 757
 758 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 759 {
 760         struct pvr2_sysfs *sfp;
 761         sfp = container_of(chp,struct pvr2_sysfs,channel);
 762         if (!sfp->channel.mc_head->disconnect_flag) return;
 763         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 764         class_dev_destroy(sfp);
 765         pvr2_channel_done(&sfp->channel);
 766         kfree(sfp);
 767 }
 768
 769
 770 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 771                                      struct pvr2_sysfs_class *class_ptr)
 772 {
 773         struct pvr2_sysfs *sfp;
 774         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 775         if (!sfp) return sfp;
 776         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 777         pvr2_channel_init(&sfp->channel,mp);
 778         sfp->channel.check_func = pvr2_sysfs_internal_check;
 779
 780         class_dev_create(sfp,class_ptr);
 781         return sfp;
 782 }
 783
 784
 785
 786 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 787 {
 788         struct pvr2_sysfs_class *clp;
 789         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 790         if (!clp) return clp;
 791         pvr2_sysfs_trace("Creating and registering pvr2_sysfs_class id=%p",
 792                          clp);
 793         clp->class.name = "pvrusb2";
 794         clp->class.class_release = pvr2_sysfs_class_release;
 795         clp->class.dev_release = pvr2_sysfs_release;
 796         if (class_register(&clp->class)) {
 797                 pvr2_sysfs_trace(
 798                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 799                 kfree(clp);
 800                 clp = NULL;
 801         }
 802         return clp;
 803 }
 804
 805
 806 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
 807 {
 808         pvr2_sysfs_trace("Unregistering pvr2_sysfs_class id=%p", clp);
 809         class_unregister(&clp->class);
 810 }
 811
 812
 813 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 814 static ssize_t debuginfo_show(struct device *class_dev,
 815                               struct device_attribute *attr, char *buf)
 816 {
 817         struct pvr2_sysfs *sfp;
 818         sfp = dev_get_drvdata(class_dev);
 819         if (!sfp) return -EINVAL;
 820         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
 821         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
 822 }
 823
 824
 825 static ssize_t debugcmd_show(struct device *class_dev,
 826                              struct device_attribute *attr, char *buf)
 827 {
 828         struct pvr2_sysfs *sfp;
 829         sfp = dev_get_drvdata(class_dev);
 830         if (!sfp) return -EINVAL;
 831         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
 832 }
 833
 834
 835 static ssize_t debugcmd_store(struct device *class_dev,
 836                               struct device_attribute *attr,
 837                               const char *buf, size_t count)
 838 {
 839         struct pvr2_sysfs *sfp;
 840         int ret;
 841
 842         sfp = dev_get_drvdata(class_dev);
 843         if (!sfp) return -EINVAL;
 844
 845         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
 846         if (ret < 0) return ret;
 847         return count;
 848 }
 849 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */