git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/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_enum;
  69         struct device_attribute attr_bits;
  70         struct device_attribute attr_val;
  71         struct device_attribute attr_custom;
  72         struct pvr2_ctrl *cptr;
  73         int ctl_id;
  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(struct device *class_dev,
  87                          struct device_attribute *attr,
  88                          char *buf)
  89 {
  90         struct pvr2_sysfs_ctl_item *cip;
  91         const char *name;
  92         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_name);
  93         name = pvr2_ctrl_get_desc(cip->cptr);
  94         pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s",
  95                          cip->chptr, cip->ctl_id, name);
  96         if (!name) return -EINVAL;
  97         return scnprintf(buf, PAGE_SIZE, "%s\n", name);
  98 }
  99
 100 static ssize_t show_type(struct device *class_dev,
 101                          struct device_attribute *attr,
 102                          char *buf)
 103 {
 104         struct pvr2_sysfs_ctl_item *cip;
 105         const char *name;
 106         enum pvr2_ctl_type tp;
 107         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_type);
 108         tp = pvr2_ctrl_get_type(cip->cptr);
 109         switch (tp) {
 110         case pvr2_ctl_int: name = "integer"; break;
 111         case pvr2_ctl_enum: name = "enum"; break;
 112         case pvr2_ctl_bitmask: name = "bitmask"; break;
 113         case pvr2_ctl_bool: name = "boolean"; break;
 114         default: name = "?"; break;
 115         }
 116         pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s",
 117                          cip->chptr, cip->ctl_id, name);
 118         if (!name) return -EINVAL;
 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_val_norm(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_val);
 157         ret = pvr2_ctrl_get_value(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_val_norm(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_custom(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_custom);
 176         ret = pvr2_ctrl_get_value(cip->cptr, &val);
 177         if (ret < 0) return ret;
 178         ret = pvr2_ctrl_custom_value_to_sym(cip->cptr, ~0, val,
 179                                             buf, PAGE_SIZE - 1, &cnt);
 180         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(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_enum(struct device *class_dev,
 187                          struct device_attribute *attr,
 188                          char *buf)
 189 {
 190         struct pvr2_sysfs_ctl_item *cip;
 191         long val;
 192         unsigned int bcnt, ccnt, ecnt;
 193         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_enum);
 194         ecnt = pvr2_ctrl_get_cnt(cip->cptr);
 195         bcnt = 0;
 196         for (val = 0; val < ecnt; val++) {
 197                 pvr2_ctrl_get_valname(cip->cptr, val, buf + bcnt,
 198                                       PAGE_SIZE - bcnt, &ccnt);
 199                 if (!ccnt) continue;
 200                 bcnt += ccnt;
 201                 if (bcnt >= PAGE_SIZE) break;
 202                 buf[bcnt] = '\n';
 203                 bcnt++;
 204         }
 205         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",
 206                          cip->chptr, cip->ctl_id);
 207         return bcnt;
 208 }
 209
 210 static ssize_t show_bits(struct device *class_dev,
 211                          struct device_attribute *attr,
 212                          char *buf)
 213 {
 214         struct pvr2_sysfs_ctl_item *cip;
 215         int valid_bits, msk;
 216         unsigned int bcnt, ccnt;
 217         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_bits);
 218         valid_bits = pvr2_ctrl_get_mask(cip->cptr);
 219         bcnt = 0;
 220         for (msk = 1; valid_bits; msk <<= 1) {
 221                 if (!(msk & valid_bits)) continue;
 222                 valid_bits &= ~msk;
 223                 pvr2_ctrl_get_valname(cip->cptr, msk, buf + bcnt,
 224                                       PAGE_SIZE - bcnt, &ccnt);
 225                 bcnt += ccnt;
 226                 if (bcnt >= PAGE_SIZE) break;
 227                 buf[bcnt] = '\n';
 228                 bcnt++;
 229         }
 230         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",
 231                          cip->chptr, cip->ctl_id);
 232         return bcnt;
 233 }
 234
 235 static int store_val_any(struct pvr2_sysfs_ctl_item *cip, int customfl,
 236                          const char *buf,unsigned int count)
 237 {
 238         int ret;
 239         int mask,val;
 240         if (customfl) {
 241                 ret = pvr2_ctrl_custom_sym_to_value(cip->cptr, buf, count,
 242                                                     &mask, &val);
 243         } else {
 244                 ret = pvr2_ctrl_sym_to_value(cip->cptr, buf, count,
 245                                              &mask, &val);
 246         }
 247         if (ret < 0) return ret;
 248         ret = pvr2_ctrl_set_mask_value(cip->cptr, mask, val);
 249         pvr2_hdw_commit_ctl(cip->chptr->channel.hdw);
 250         return ret;
 251 }
 252
 253 static ssize_t store_val_norm(struct device *class_dev,
 254                               struct device_attribute *attr,
 255                               const char *buf, size_t count)
 256 {
 257         struct pvr2_sysfs_ctl_item *cip;
 258         int ret;
 259         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
 260         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
 261                          cip->chptr, cip->ctl_id, (int)count, buf);
 262         ret = store_val_any(cip, 0, buf, count);
 263         if (!ret) ret = count;
 264         return ret;
 265 }
 266
 267 static ssize_t store_val_custom(struct device *class_dev,
 268                                 struct device_attribute *attr,
 269                                 const char *buf, size_t count)
 270 {
 271         struct pvr2_sysfs_ctl_item *cip;
 272         int ret;
 273         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
 274         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
 275                          cip->chptr, cip->ctl_id, (int)count, buf);
 276         ret = store_val_any(cip, 1, buf, count);
 277         if (!ret) ret = count;
 278         return ret;
 279 }
 280
 281 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 282 {
 283         struct pvr2_sysfs_ctl_item *cip;
 284         struct pvr2_ctrl *cptr;
 285         unsigned int cnt,acnt;
 286         int ret;
 287
 288         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 289         if (!cptr) return;
 290
 291         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
 292         if (!cip) return;
 293         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 294
 295         cip->cptr = cptr;
 296         cip->ctl_id = ctl_id;
 297
 298         cip->chptr = sfp;
 299         cip->item_next = NULL;
 300         if (sfp->item_last) {
 301                 sfp->item_last->item_next = cip;
 302         } else {
 303                 sfp->item_first = cip;
 304         }
 305         sfp->item_last = cip;
 306
 307         cip->attr_name.attr.name = "name";
 308         cip->attr_name.attr.mode = S_IRUGO;
 309         cip->attr_name.show = show_name;
 310
 311         cip->attr_type.attr.name = "type";
 312         cip->attr_type.attr.mode = S_IRUGO;
 313         cip->attr_type.show = show_type;
 314
 315         cip->attr_min.attr.name = "min_val";
 316         cip->attr_min.attr.mode = S_IRUGO;
 317         cip->attr_min.show = show_min;
 318
 319         cip->attr_max.attr.name = "max_val";
 320         cip->attr_max.attr.mode = S_IRUGO;
 321         cip->attr_max.show = show_max;
 322
 323         cip->attr_val.attr.name = "cur_val";
 324         cip->attr_val.attr.mode = S_IRUGO;
 325
 326         cip->attr_custom.attr.name = "custom_val";
 327         cip->attr_custom.attr.mode = S_IRUGO;
 328
 329         cip->attr_enum.attr.name = "enum_val";
 330         cip->attr_enum.attr.mode = S_IRUGO;
 331         cip->attr_enum.show = show_enum;
 332
 333         cip->attr_bits.attr.name = "bit_val";
 334         cip->attr_bits.attr.mode = S_IRUGO;
 335         cip->attr_bits.show = show_bits;
 336
 337         if (pvr2_ctrl_is_writable(cptr)) {
 338                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 339                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 340         }
 341
 342         acnt = 0;
 343         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 344         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 345         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 346         cip->attr_val.show = show_val_norm;
 347         cip->attr_val.store = store_val_norm;
 348         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 349                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 350                 cip->attr_custom.show = show_val_custom;
 351                 cip->attr_custom.store = store_val_custom;
 352         }
 353         switch (pvr2_ctrl_get_type(cptr)) {
 354         case pvr2_ctl_enum:
 355                 // Control is an enumeration
 356                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 357                 break;
 358         case pvr2_ctl_int:
 359                 // Control is an integer
 360                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 361                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 362                 break;
 363         case pvr2_ctl_bitmask:
 364                 // Control is an bitmask
 365                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 366                 break;
 367         default: break;
 368         }
 369
 370         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 371                         pvr2_ctrl_get_name(cptr));
 372         cip->name[cnt] = 0;
 373         cip->grp.name = cip->name;
 374         cip->grp.attrs = cip->attr_gen;
 375
 376         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 377         if (ret) {
 378                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 379                            "sysfs_create_group error: %d",
 380                            ret);
 381                 return;
 382         }
 383         cip->created_ok = !0;
 384 }
 385
 386 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 387 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
 388                               char *);
 389 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
 390                              char *);
 391 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
 392                               const char *, size_t count);
 393
 394 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 395 {
 396         struct pvr2_sysfs_debugifc *dip;
 397         int ret;
 398
 399         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
 400         if (!dip) return;
 401         dip->attr_debugcmd.attr.name = "debugcmd";
 402         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 403         dip->attr_debugcmd.show = debugcmd_show;
 404         dip->attr_debugcmd.store = debugcmd_store;
 405         dip->attr_debuginfo.attr.name = "debuginfo";
 406         dip->attr_debuginfo.attr.mode = S_IRUGO;
 407         dip->attr_debuginfo.show = debuginfo_show;
 408         sfp->debugifc = dip;
 409         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 410         if (ret < 0) {
 411                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 412                            "device_create_file error: %d",
 413                            ret);
 414         } else {
 415                 dip->debugcmd_created_ok = !0;
 416         }
 417         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 418         if (ret < 0) {
 419                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 420                            "device_create_file error: %d",
 421                            ret);
 422         } else {
 423                 dip->debuginfo_created_ok = !0;
 424         }
 425 }
 426
 427
 428 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 429 {
 430         if (!sfp->debugifc) return;
 431         if (sfp->debugifc->debuginfo_created_ok) {
 432                 device_remove_file(sfp->class_dev,
 433                                          &sfp->debugifc->attr_debuginfo);
 434         }
 435         if (sfp->debugifc->debugcmd_created_ok) {
 436                 device_remove_file(sfp->class_dev,
 437                                          &sfp->debugifc->attr_debugcmd);
 438         }
 439         kfree(sfp->debugifc);
 440         sfp->debugifc = NULL;
 441 }
 442 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 443
 444
 445 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 446 {
 447         unsigned int idx,cnt;
 448         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 449         for (idx = 0; idx < cnt; idx++) {
 450                 pvr2_sysfs_add_control(sfp,idx);
 451         }
 452 }
 453
 454
 455 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 456 {
 457         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 458         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 459                 cip2 = cip1->item_next;
 460                 if (cip1->created_ok) {
 461                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 462                 }
 463                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 464                 kfree(cip1);
 465         }
 466 }
 467
 468
 469 static void pvr2_sysfs_class_release(struct class *class)
 470 {
 471         struct pvr2_sysfs_class *clp;
 472         clp = container_of(class,struct pvr2_sysfs_class,class);
 473         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 474         kfree(clp);
 475 }
 476
 477
 478 static void pvr2_sysfs_release(struct device *class_dev)
 479 {
 480         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 481         kfree(class_dev);
 482 }
 483
 484
 485 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 486 {
 487         if (!sfp->class_dev) return;
 488 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 489         pvr2_sysfs_tear_down_debugifc(sfp);
 490 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 491         pvr2_sysfs_tear_down_controls(sfp);
 492         if (sfp->hdw_desc_created_ok) {
 493                 device_remove_file(sfp->class_dev,
 494                                    &sfp->attr_hdw_desc);
 495         }
 496         if (sfp->hdw_name_created_ok) {
 497                 device_remove_file(sfp->class_dev,
 498                                    &sfp->attr_hdw_name);
 499         }
 500         if (sfp->bus_info_created_ok) {
 501                 device_remove_file(sfp->class_dev,
 502                                          &sfp->attr_bus_info);
 503         }
 504         if (sfp->v4l_minor_number_created_ok) {
 505                 device_remove_file(sfp->class_dev,
 506                                          &sfp->attr_v4l_minor_number);
 507         }
 508         if (sfp->v4l_radio_minor_number_created_ok) {
 509                 device_remove_file(sfp->class_dev,
 510                                          &sfp->attr_v4l_radio_minor_number);
 511         }
 512         if (sfp->unit_number_created_ok) {
 513                 device_remove_file(sfp->class_dev,
 514                                          &sfp->attr_unit_number);
 515         }
 516         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 517         sfp->class_dev->driver_data = NULL;
 518         device_unregister(sfp->class_dev);
 519         sfp->class_dev = NULL;
 520 }
 521
 522
 523 static ssize_t v4l_minor_number_show(struct device *class_dev,
 524                                      struct device_attribute *attr, char *buf)
 525 {
 526         struct pvr2_sysfs *sfp;
 527         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 528         if (!sfp) return -EINVAL;
 529         return scnprintf(buf,PAGE_SIZE,"%d\n",
 530                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 531                                                        pvr2_v4l_type_video));
 532 }
 533
 534
 535 static ssize_t bus_info_show(struct device *class_dev,
 536                              struct device_attribute *attr, char *buf)
 537 {
 538         struct pvr2_sysfs *sfp;
 539         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 540         if (!sfp) return -EINVAL;
 541         return scnprintf(buf,PAGE_SIZE,"%s\n",
 542                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
 543 }
 544
 545
 546 static ssize_t hdw_name_show(struct device *class_dev,
 547                              struct device_attribute *attr, char *buf)
 548 {
 549         struct pvr2_sysfs *sfp;
 550         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 551         if (!sfp) return -EINVAL;
 552         return scnprintf(buf,PAGE_SIZE,"%s\n",
 553                          pvr2_hdw_get_type(sfp->channel.hdw));
 554 }
 555
 556
 557 static ssize_t hdw_desc_show(struct device *class_dev,
 558                              struct device_attribute *attr, char *buf)
 559 {
 560         struct pvr2_sysfs *sfp;
 561         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 562         if (!sfp) return -EINVAL;
 563         return scnprintf(buf,PAGE_SIZE,"%s\n",
 564                          pvr2_hdw_get_desc(sfp->channel.hdw));
 565 }
 566
 567
 568 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
 569                                            struct device_attribute *attr,
 570                                            char *buf)
 571 {
 572         struct pvr2_sysfs *sfp;
 573         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 574         if (!sfp) return -EINVAL;
 575         return scnprintf(buf,PAGE_SIZE,"%d\n",
 576                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 577                                                        pvr2_v4l_type_radio));
 578 }
 579
 580
 581 static ssize_t unit_number_show(struct device *class_dev,
 582                                 struct device_attribute *attr, char *buf)
 583 {
 584         struct pvr2_sysfs *sfp;
 585         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 586         if (!sfp) return -EINVAL;
 587         return scnprintf(buf,PAGE_SIZE,"%d\n",
 588                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 589 }
 590
 591
 592 static void class_dev_create(struct pvr2_sysfs *sfp,
 593                              struct pvr2_sysfs_class *class_ptr)
 594 {
 595         struct usb_device *usb_dev;
 596         struct device *class_dev;
 597         int ret;
 598
 599         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 600         if (!usb_dev) return;
 601         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 602         if (!class_dev) return;
 603
 604         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 605
 606         class_dev->class = &class_ptr->class;
 607         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
 608                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "sn-%lu",
 609                          pvr2_hdw_get_sn(sfp->channel.hdw));
 610         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
 611                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "unit-%c",
 612                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
 613         } else {
 614                 kfree(class_dev);
 615                 return;
 616         }
 617
 618         class_dev->parent = &usb_dev->dev;
 619
 620         sfp->class_dev = class_dev;
 621         class_dev->driver_data = sfp;
 622         ret = device_register(class_dev);
 623         if (ret) {
 624                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 625                            "device_register failed");
 626                 kfree(class_dev);
 627                 return;
 628         }
 629
 630         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 631         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 632         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 633         sfp->attr_v4l_minor_number.store = NULL;
 634         ret = device_create_file(sfp->class_dev,
 635                                        &sfp->attr_v4l_minor_number);
 636         if (ret < 0) {
 637                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 638                            "device_create_file error: %d",
 639                            ret);
 640         } else {
 641                 sfp->v4l_minor_number_created_ok = !0;
 642         }
 643
 644         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 645         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 646         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 647         sfp->attr_v4l_radio_minor_number.store = NULL;
 648         ret = device_create_file(sfp->class_dev,
 649                                        &sfp->attr_v4l_radio_minor_number);
 650         if (ret < 0) {
 651                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 652                            "device_create_file error: %d",
 653                            ret);
 654         } else {
 655                 sfp->v4l_radio_minor_number_created_ok = !0;
 656         }
 657
 658         sfp->attr_unit_number.attr.name = "unit_number";
 659         sfp->attr_unit_number.attr.mode = S_IRUGO;
 660         sfp->attr_unit_number.show = unit_number_show;
 661         sfp->attr_unit_number.store = NULL;
 662         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 663         if (ret < 0) {
 664                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 665                            "device_create_file error: %d",
 666                            ret);
 667         } else {
 668                 sfp->unit_number_created_ok = !0;
 669         }
 670
 671         sfp->attr_bus_info.attr.name = "bus_info_str";
 672         sfp->attr_bus_info.attr.mode = S_IRUGO;
 673         sfp->attr_bus_info.show = bus_info_show;
 674         sfp->attr_bus_info.store = NULL;
 675         ret = device_create_file(sfp->class_dev,
 676                                        &sfp->attr_bus_info);
 677         if (ret < 0) {
 678                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 679                            "device_create_file error: %d",
 680                            ret);
 681         } else {
 682                 sfp->bus_info_created_ok = !0;
 683         }
 684
 685         sfp->attr_hdw_name.attr.name = "device_hardware_type";
 686         sfp->attr_hdw_name.attr.mode = S_IRUGO;
 687         sfp->attr_hdw_name.show = hdw_name_show;
 688         sfp->attr_hdw_name.store = NULL;
 689         ret = device_create_file(sfp->class_dev,
 690                                  &sfp->attr_hdw_name);
 691         if (ret < 0) {
 692                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 693                            "device_create_file error: %d",
 694                            ret);
 695         } else {
 696                 sfp->hdw_name_created_ok = !0;
 697         }
 698
 699         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
 700         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
 701         sfp->attr_hdw_desc.show = hdw_desc_show;
 702         sfp->attr_hdw_desc.store = NULL;
 703         ret = device_create_file(sfp->class_dev,
 704                                  &sfp->attr_hdw_desc);
 705         if (ret < 0) {
 706                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 707                            "device_create_file error: %d",
 708                            ret);
 709         } else {
 710                 sfp->hdw_desc_created_ok = !0;
 711         }
 712
 713         pvr2_sysfs_add_controls(sfp);
 714 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 715         pvr2_sysfs_add_debugifc(sfp);
 716 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 717 }
 718
 719
 720 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 721 {
 722         struct pvr2_sysfs *sfp;
 723         sfp = container_of(chp,struct pvr2_sysfs,channel);
 724         if (!sfp->channel.mc_head->disconnect_flag) return;
 725         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 726         class_dev_destroy(sfp);
 727         pvr2_channel_done(&sfp->channel);
 728         kfree(sfp);
 729 }
 730
 731
 732 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 733                                      struct pvr2_sysfs_class *class_ptr)
 734 {
 735         struct pvr2_sysfs *sfp;
 736         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 737         if (!sfp) return sfp;
 738         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 739         pvr2_channel_init(&sfp->channel,mp);
 740         sfp->channel.check_func = pvr2_sysfs_internal_check;
 741
 742         class_dev_create(sfp,class_ptr);
 743         return sfp;
 744 }
 745
 746
 747
 748 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 749 {
 750         struct pvr2_sysfs_class *clp;
 751         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 752         if (!clp) return clp;
 753         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
 754         clp->class.name = "pvrusb2";
 755         clp->class.class_release = pvr2_sysfs_class_release;
 756         clp->class.dev_release = pvr2_sysfs_release;
 757         if (class_register(&clp->class)) {
 758                 pvr2_sysfs_trace(
 759                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 760                 kfree(clp);
 761                 clp = NULL;
 762         }
 763         return clp;
 764 }
 765
 766
 767 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
 768 {
 769         class_unregister(&clp->class);
 770 }
 771
 772
 773 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 774 static ssize_t debuginfo_show(struct device *class_dev,
 775                               struct device_attribute *attr, char *buf)
 776 {
 777         struct pvr2_sysfs *sfp;
 778         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 779         if (!sfp) return -EINVAL;
 780         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
 781         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
 782 }
 783
 784
 785 static ssize_t debugcmd_show(struct device *class_dev,
 786                              struct device_attribute *attr, char *buf)
 787 {
 788         struct pvr2_sysfs *sfp;
 789         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 790         if (!sfp) return -EINVAL;
 791         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
 792 }
 793
 794
 795 static ssize_t debugcmd_store(struct device *class_dev,
 796                               struct device_attribute *attr,
 797                               const char *buf, size_t count)
 798 {
 799         struct pvr2_sysfs *sfp;
 800         int ret;
 801
 802         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 803         if (!sfp) return -EINVAL;
 804
 805         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
 806         if (ret < 0) return ret;
 807         return count;
 808 }
 809 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 810
 811
 812 /*
 813   Stuff for Emacs to see, in order to encourage consistent editing style:
 814   *** Local Variables: ***
 815   *** mode: c ***
 816   *** fill-column: 75 ***
 817   *** tab-width: 8 ***
 818   *** c-basic-offset: 8 ***
 819   *** End: ***
 820   */