release/src-rt-6.x.4708/linux/linux-2.6.36/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_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         if (!name) return -EINVAL;
 120         return scnprintf(buf, PAGE_SIZE, "%s\n", name);
 121 }
 122
 123 static ssize_t show_min(struct device *class_dev,
 124                         struct device_attribute *attr,
 125                         char *buf)
 126 {
 127         struct pvr2_sysfs_ctl_item *cip;
 128         long val;
 129         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_min);
 130         val = pvr2_ctrl_get_min(cip->cptr);
 131         pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld",
 132                          cip->chptr, cip->ctl_id, val);
 133         return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
 134 }
 135
 136 static ssize_t show_max(struct device *class_dev,
 137                         struct device_attribute *attr,
 138                         char *buf)
 139 {
 140         struct pvr2_sysfs_ctl_item *cip;
 141         long val;
 142         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_max);
 143         val = pvr2_ctrl_get_max(cip->cptr);
 144         pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld",
 145                          cip->chptr, cip->ctl_id, val);
 146         return scnprintf(buf, PAGE_SIZE, "%ld\n", val);
 147 }
 148
 149 static ssize_t show_def(struct device *class_dev,
 150                         struct device_attribute *attr,
 151                         char *buf)
 152 {
 153         struct pvr2_sysfs_ctl_item *cip;
 154         int val;
 155         int ret;
 156         unsigned int cnt = 0;
 157         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_def);
 158         ret = pvr2_ctrl_get_def(cip->cptr, &val);
 159         if (ret < 0) return ret;
 160         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
 161                                      buf, PAGE_SIZE - 1, &cnt);
 162         pvr2_sysfs_trace("pvr2_sysfs(%p) show_def(cid=%d) is %.*s (%d)",
 163                          cip->chptr, cip->ctl_id, cnt, buf, val);
 164         buf[cnt] = '\n';
 165         return cnt + 1;
 166 }
 167
 168 static ssize_t show_val_norm(struct device *class_dev,
 169                              struct device_attribute *attr,
 170                              char *buf)
 171 {
 172         struct pvr2_sysfs_ctl_item *cip;
 173         int val;
 174         int ret;
 175         unsigned int cnt = 0;
 176         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
 177         ret = pvr2_ctrl_get_value(cip->cptr, &val);
 178         if (ret < 0) return ret;
 179         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
 180                                      buf, PAGE_SIZE - 1, &cnt);
 181         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
 182                          cip->chptr, cip->ctl_id, cnt, buf, val);
 183         buf[cnt] = '\n';
 184         return cnt+1;
 185 }
 186
 187 static ssize_t show_val_custom(struct device *class_dev,
 188                                struct device_attribute *attr,
 189                                char *buf)
 190 {
 191         struct pvr2_sysfs_ctl_item *cip;
 192         int val;
 193         int ret;
 194         unsigned int cnt = 0;
 195         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
 196         ret = pvr2_ctrl_get_value(cip->cptr, &val);
 197         if (ret < 0) return ret;
 198         ret = pvr2_ctrl_custom_value_to_sym(cip->cptr, ~0, val,
 199                                             buf, PAGE_SIZE - 1, &cnt);
 200         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
 201                          cip->chptr, cip->ctl_id, cnt, buf, val);
 202         buf[cnt] = '\n';
 203         return cnt+1;
 204 }
 205
 206 static ssize_t show_enum(struct device *class_dev,
 207                          struct device_attribute *attr,
 208                          char *buf)
 209 {
 210         struct pvr2_sysfs_ctl_item *cip;
 211         long val;
 212         unsigned int bcnt, ccnt, ecnt;
 213         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_enum);
 214         ecnt = pvr2_ctrl_get_cnt(cip->cptr);
 215         bcnt = 0;
 216         for (val = 0; val < ecnt; val++) {
 217                 pvr2_ctrl_get_valname(cip->cptr, val, buf + bcnt,
 218                                       PAGE_SIZE - bcnt, &ccnt);
 219                 if (!ccnt) continue;
 220                 bcnt += ccnt;
 221                 if (bcnt >= PAGE_SIZE) break;
 222                 buf[bcnt] = '\n';
 223                 bcnt++;
 224         }
 225         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",
 226                          cip->chptr, cip->ctl_id);
 227         return bcnt;
 228 }
 229
 230 static ssize_t show_bits(struct device *class_dev,
 231                          struct device_attribute *attr,
 232                          char *buf)
 233 {
 234         struct pvr2_sysfs_ctl_item *cip;
 235         int valid_bits, msk;
 236         unsigned int bcnt, ccnt;
 237         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_bits);
 238         valid_bits = pvr2_ctrl_get_mask(cip->cptr);
 239         bcnt = 0;
 240         for (msk = 1; valid_bits; msk <<= 1) {
 241                 if (!(msk & valid_bits)) continue;
 242                 valid_bits &= ~msk;
 243                 pvr2_ctrl_get_valname(cip->cptr, msk, buf + bcnt,
 244                                       PAGE_SIZE - bcnt, &ccnt);
 245                 bcnt += ccnt;
 246                 if (bcnt >= PAGE_SIZE) break;
 247                 buf[bcnt] = '\n';
 248                 bcnt++;
 249         }
 250         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",
 251                          cip->chptr, cip->ctl_id);
 252         return bcnt;
 253 }
 254
 255 static int store_val_any(struct pvr2_sysfs_ctl_item *cip, int customfl,
 256                          const char *buf,unsigned int count)
 257 {
 258         int ret;
 259         int mask,val;
 260         if (customfl) {
 261                 ret = pvr2_ctrl_custom_sym_to_value(cip->cptr, buf, count,
 262                                                     &mask, &val);
 263         } else {
 264                 ret = pvr2_ctrl_sym_to_value(cip->cptr, buf, count,
 265                                              &mask, &val);
 266         }
 267         if (ret < 0) return ret;
 268         ret = pvr2_ctrl_set_mask_value(cip->cptr, mask, val);
 269         pvr2_hdw_commit_ctl(cip->chptr->channel.hdw);
 270         return ret;
 271 }
 272
 273 static ssize_t store_val_norm(struct device *class_dev,
 274                               struct device_attribute *attr,
 275                               const char *buf, size_t count)
 276 {
 277         struct pvr2_sysfs_ctl_item *cip;
 278         int ret;
 279         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
 280         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
 281                          cip->chptr, cip->ctl_id, (int)count, buf);
 282         ret = store_val_any(cip, 0, buf, count);
 283         if (!ret) ret = count;
 284         return ret;
 285 }
 286
 287 static ssize_t store_val_custom(struct device *class_dev,
 288                                 struct device_attribute *attr,
 289                                 const char *buf, size_t count)
 290 {
 291         struct pvr2_sysfs_ctl_item *cip;
 292         int ret;
 293         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
 294         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
 295                          cip->chptr, cip->ctl_id, (int)count, buf);
 296         ret = store_val_any(cip, 1, buf, count);
 297         if (!ret) ret = count;
 298         return ret;
 299 }
 300
 301 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 302 {
 303         struct pvr2_sysfs_ctl_item *cip;
 304         struct pvr2_ctrl *cptr;
 305         unsigned int cnt,acnt;
 306         int ret;
 307
 308         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 309         if (!cptr) return;
 310
 311         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
 312         if (!cip) return;
 313         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 314
 315         cip->cptr = cptr;
 316         cip->ctl_id = ctl_id;
 317
 318         cip->chptr = sfp;
 319         cip->item_next = NULL;
 320         if (sfp->item_last) {
 321                 sfp->item_last->item_next = cip;
 322         } else {
 323                 sfp->item_first = cip;
 324         }
 325         sfp->item_last = cip;
 326
 327         cip->attr_name.attr.name = "name";
 328         cip->attr_name.attr.mode = S_IRUGO;
 329         cip->attr_name.show = show_name;
 330
 331         cip->attr_type.attr.name = "type";
 332         cip->attr_type.attr.mode = S_IRUGO;
 333         cip->attr_type.show = show_type;
 334
 335         cip->attr_min.attr.name = "min_val";
 336         cip->attr_min.attr.mode = S_IRUGO;
 337         cip->attr_min.show = show_min;
 338
 339         cip->attr_max.attr.name = "max_val";
 340         cip->attr_max.attr.mode = S_IRUGO;
 341         cip->attr_max.show = show_max;
 342
 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         cip->attr_val.attr.name = "cur_val";
 348         cip->attr_val.attr.mode = S_IRUGO;
 349
 350         cip->attr_custom.attr.name = "custom_val";
 351         cip->attr_custom.attr.mode = S_IRUGO;
 352
 353         cip->attr_enum.attr.name = "enum_val";
 354         cip->attr_enum.attr.mode = S_IRUGO;
 355         cip->attr_enum.show = show_enum;
 356
 357         cip->attr_bits.attr.name = "bit_val";
 358         cip->attr_bits.attr.mode = S_IRUGO;
 359         cip->attr_bits.show = show_bits;
 360
 361         if (pvr2_ctrl_is_writable(cptr)) {
 362                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 363                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 364         }
 365
 366         acnt = 0;
 367         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 368         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 369         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 370         cip->attr_gen[acnt++] = &cip->attr_def.attr;
 371         cip->attr_val.show = show_val_norm;
 372         cip->attr_val.store = store_val_norm;
 373         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 374                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 375                 cip->attr_custom.show = show_val_custom;
 376                 cip->attr_custom.store = store_val_custom;
 377         }
 378         switch (pvr2_ctrl_get_type(cptr)) {
 379         case pvr2_ctl_enum:
 380                 // Control is an enumeration
 381                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 382                 break;
 383         case pvr2_ctl_int:
 384                 // Control is an integer
 385                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 386                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 387                 break;
 388         case pvr2_ctl_bitmask:
 389                 // Control is an bitmask
 390                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 391                 break;
 392         default: break;
 393         }
 394
 395         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 396                         pvr2_ctrl_get_name(cptr));
 397         cip->name[cnt] = 0;
 398         cip->grp.name = cip->name;
 399         cip->grp.attrs = cip->attr_gen;
 400
 401         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 402         if (ret) {
 403                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 404                            "sysfs_create_group error: %d",
 405                            ret);
 406                 return;
 407         }
 408         cip->created_ok = !0;
 409 }
 410
 411 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 412 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
 413                               char *);
 414 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
 415                              char *);
 416 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
 417                               const char *, size_t count);
 418
 419 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 420 {
 421         struct pvr2_sysfs_debugifc *dip;
 422         int ret;
 423
 424         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
 425         if (!dip) return;
 426         sysfs_attr_init(&dip->attr_debugcmd.attr);
 427         dip->attr_debugcmd.attr.name = "debugcmd";
 428         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 429         dip->attr_debugcmd.show = debugcmd_show;
 430         dip->attr_debugcmd.store = debugcmd_store;
 431         sysfs_attr_init(&dip->attr_debuginfo.attr);
 432         dip->attr_debuginfo.attr.name = "debuginfo";
 433         dip->attr_debuginfo.attr.mode = S_IRUGO;
 434         dip->attr_debuginfo.show = debuginfo_show;
 435         sfp->debugifc = dip;
 436         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 437         if (ret < 0) {
 438                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 439                            "device_create_file error: %d",
 440                            ret);
 441         } else {
 442                 dip->debugcmd_created_ok = !0;
 443         }
 444         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 445         if (ret < 0) {
 446                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 447                            "device_create_file error: %d",
 448                            ret);
 449         } else {
 450                 dip->debuginfo_created_ok = !0;
 451         }
 452 }
 453
 454
 455 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 456 {
 457         if (!sfp->debugifc) return;
 458         if (sfp->debugifc->debuginfo_created_ok) {
 459                 device_remove_file(sfp->class_dev,
 460                                          &sfp->debugifc->attr_debuginfo);
 461         }
 462         if (sfp->debugifc->debugcmd_created_ok) {
 463                 device_remove_file(sfp->class_dev,
 464                                          &sfp->debugifc->attr_debugcmd);
 465         }
 466         kfree(sfp->debugifc);
 467         sfp->debugifc = NULL;
 468 }
 469 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 470
 471
 472 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 473 {
 474         unsigned int idx,cnt;
 475         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 476         for (idx = 0; idx < cnt; idx++) {
 477                 pvr2_sysfs_add_control(sfp,idx);
 478         }
 479 }
 480
 481
 482 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 483 {
 484         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 485         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 486                 cip2 = cip1->item_next;
 487                 if (cip1->created_ok) {
 488                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 489                 }
 490                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 491                 kfree(cip1);
 492         }
 493 }
 494
 495
 496 static void pvr2_sysfs_class_release(struct class *class)
 497 {
 498         struct pvr2_sysfs_class *clp;
 499         clp = container_of(class,struct pvr2_sysfs_class,class);
 500         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 501         kfree(clp);
 502 }
 503
 504
 505 static void pvr2_sysfs_release(struct device *class_dev)
 506 {
 507         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 508         kfree(class_dev);
 509 }
 510
 511
 512 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 513 {
 514         struct device *dev;
 515         if (!sfp->class_dev) return;
 516 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 517         pvr2_sysfs_tear_down_debugifc(sfp);
 518 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 519         pvr2_sysfs_tear_down_controls(sfp);
 520         if (sfp->hdw_desc_created_ok) {
 521                 device_remove_file(sfp->class_dev,
 522                                    &sfp->attr_hdw_desc);
 523         }
 524         if (sfp->hdw_name_created_ok) {
 525                 device_remove_file(sfp->class_dev,
 526                                    &sfp->attr_hdw_name);
 527         }
 528         if (sfp->bus_info_created_ok) {
 529                 device_remove_file(sfp->class_dev,
 530                                          &sfp->attr_bus_info);
 531         }
 532         if (sfp->v4l_minor_number_created_ok) {
 533                 device_remove_file(sfp->class_dev,
 534                                          &sfp->attr_v4l_minor_number);
 535         }
 536         if (sfp->v4l_radio_minor_number_created_ok) {
 537                 device_remove_file(sfp->class_dev,
 538                                          &sfp->attr_v4l_radio_minor_number);
 539         }
 540         if (sfp->unit_number_created_ok) {
 541                 device_remove_file(sfp->class_dev,
 542                                          &sfp->attr_unit_number);
 543         }
 544         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 545         dev_set_drvdata(sfp->class_dev, NULL);
 546         dev = sfp->class_dev->parent;
 547         sfp->class_dev->parent = NULL;
 548         put_device(dev);
 549         device_unregister(sfp->class_dev);
 550         sfp->class_dev = NULL;
 551 }
 552
 553
 554 static ssize_t v4l_minor_number_show(struct device *class_dev,
 555                                      struct device_attribute *attr, char *buf)
 556 {
 557         struct pvr2_sysfs *sfp;
 558         sfp = dev_get_drvdata(class_dev);
 559         if (!sfp) return -EINVAL;
 560         return scnprintf(buf,PAGE_SIZE,"%d\n",
 561                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 562                                                        pvr2_v4l_type_video));
 563 }
 564
 565
 566 static ssize_t bus_info_show(struct device *class_dev,
 567                              struct device_attribute *attr, char *buf)
 568 {
 569         struct pvr2_sysfs *sfp;
 570         sfp = dev_get_drvdata(class_dev);
 571         if (!sfp) return -EINVAL;
 572         return scnprintf(buf,PAGE_SIZE,"%s\n",
 573                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
 574 }
 575
 576
 577 static ssize_t hdw_name_show(struct device *class_dev,
 578                              struct device_attribute *attr, char *buf)
 579 {
 580         struct pvr2_sysfs *sfp;
 581         sfp = dev_get_drvdata(class_dev);
 582         if (!sfp) return -EINVAL;
 583         return scnprintf(buf,PAGE_SIZE,"%s\n",
 584                          pvr2_hdw_get_type(sfp->channel.hdw));
 585 }
 586
 587
 588 static ssize_t hdw_desc_show(struct device *class_dev,
 589                              struct device_attribute *attr, char *buf)
 590 {
 591         struct pvr2_sysfs *sfp;
 592         sfp = dev_get_drvdata(class_dev);
 593         if (!sfp) return -EINVAL;
 594         return scnprintf(buf,PAGE_SIZE,"%s\n",
 595                          pvr2_hdw_get_desc(sfp->channel.hdw));
 596 }
 597
 598
 599 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
 600                                            struct device_attribute *attr,
 601                                            char *buf)
 602 {
 603         struct pvr2_sysfs *sfp;
 604         sfp = dev_get_drvdata(class_dev);
 605         if (!sfp) return -EINVAL;
 606         return scnprintf(buf,PAGE_SIZE,"%d\n",
 607                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 608                                                        pvr2_v4l_type_radio));
 609 }
 610
 611
 612 static ssize_t unit_number_show(struct device *class_dev,
 613                                 struct device_attribute *attr, char *buf)
 614 {
 615         struct pvr2_sysfs *sfp;
 616         sfp = dev_get_drvdata(class_dev);
 617         if (!sfp) return -EINVAL;
 618         return scnprintf(buf,PAGE_SIZE,"%d\n",
 619                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 620 }
 621
 622
 623 static void class_dev_create(struct pvr2_sysfs *sfp,
 624                              struct pvr2_sysfs_class *class_ptr)
 625 {
 626         struct usb_device *usb_dev;
 627         struct device *class_dev;
 628         int ret;
 629
 630         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 631         if (!usb_dev) return;
 632         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 633         if (!class_dev) return;
 634
 635         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 636
 637         class_dev->class = &class_ptr->class;
 638
 639         dev_set_name(class_dev, "%s",
 640                      pvr2_hdw_get_device_identifier(sfp->channel.hdw));
 641
 642         class_dev->parent = get_device(&usb_dev->dev);
 643
 644         sfp->class_dev = class_dev;
 645         dev_set_drvdata(class_dev, sfp);
 646         ret = device_register(class_dev);
 647         if (ret) {
 648                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 649                            "device_register failed");
 650                 kfree(class_dev);
 651                 return;
 652         }
 653
 654         sysfs_attr_init(&sfp->attr_v4l_minor_number.attr);
 655         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 656         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 657         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 658         sfp->attr_v4l_minor_number.store = NULL;
 659         ret = device_create_file(sfp->class_dev,
 660                                        &sfp->attr_v4l_minor_number);
 661         if (ret < 0) {
 662                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 663                            "device_create_file error: %d",
 664                            ret);
 665         } else {
 666                 sfp->v4l_minor_number_created_ok = !0;
 667         }
 668
 669         sysfs_attr_init(&sfp->attr_v4l_radio_minor_number.attr);
 670         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 671         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 672         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 673         sfp->attr_v4l_radio_minor_number.store = NULL;
 674         ret = device_create_file(sfp->class_dev,
 675                                        &sfp->attr_v4l_radio_minor_number);
 676         if (ret < 0) {
 677                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 678                            "device_create_file error: %d",
 679                            ret);
 680         } else {
 681                 sfp->v4l_radio_minor_number_created_ok = !0;
 682         }
 683
 684         sysfs_attr_init(&sfp->attr_unit_number.attr);
 685         sfp->attr_unit_number.attr.name = "unit_number";
 686         sfp->attr_unit_number.attr.mode = S_IRUGO;
 687         sfp->attr_unit_number.show = unit_number_show;
 688         sfp->attr_unit_number.store = NULL;
 689         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 690         if (ret < 0) {
 691                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 692                            "device_create_file error: %d",
 693                            ret);
 694         } else {
 695                 sfp->unit_number_created_ok = !0;
 696         }
 697
 698         sysfs_attr_init(&sfp->attr_bus_info.attr);
 699         sfp->attr_bus_info.attr.name = "bus_info_str";
 700         sfp->attr_bus_info.attr.mode = S_IRUGO;
 701         sfp->attr_bus_info.show = bus_info_show;
 702         sfp->attr_bus_info.store = NULL;
 703         ret = device_create_file(sfp->class_dev,
 704                                        &sfp->attr_bus_info);
 705         if (ret < 0) {
 706                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 707                            "device_create_file error: %d",
 708                            ret);
 709         } else {
 710                 sfp->bus_info_created_ok = !0;
 711         }
 712
 713         sysfs_attr_init(&sfp->attr_hdw_name.attr);
 714         sfp->attr_hdw_name.attr.name = "device_hardware_type";
 715         sfp->attr_hdw_name.attr.mode = S_IRUGO;
 716         sfp->attr_hdw_name.show = hdw_name_show;
 717         sfp->attr_hdw_name.store = NULL;
 718         ret = device_create_file(sfp->class_dev,
 719                                  &sfp->attr_hdw_name);
 720         if (ret < 0) {
 721                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 722                            "device_create_file error: %d",
 723                            ret);
 724         } else {
 725                 sfp->hdw_name_created_ok = !0;
 726         }
 727
 728         sysfs_attr_init(&sfp->attr_hdw_desc.attr);
 729         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
 730         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
 731         sfp->attr_hdw_desc.show = hdw_desc_show;
 732         sfp->attr_hdw_desc.store = NULL;
 733         ret = device_create_file(sfp->class_dev,
 734                                  &sfp->attr_hdw_desc);
 735         if (ret < 0) {
 736                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 737                            "device_create_file error: %d",
 738                            ret);
 739         } else {
 740                 sfp->hdw_desc_created_ok = !0;
 741         }
 742
 743         pvr2_sysfs_add_controls(sfp);
 744 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 745         pvr2_sysfs_add_debugifc(sfp);
 746 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 747 }
 748
 749
 750 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 751 {
 752         struct pvr2_sysfs *sfp;
 753         sfp = container_of(chp,struct pvr2_sysfs,channel);
 754         if (!sfp->channel.mc_head->disconnect_flag) return;
 755         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 756         class_dev_destroy(sfp);
 757         pvr2_channel_done(&sfp->channel);
 758         kfree(sfp);
 759 }
 760
 761
 762 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 763                                      struct pvr2_sysfs_class *class_ptr)
 764 {
 765         struct pvr2_sysfs *sfp;
 766         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 767         if (!sfp) return sfp;
 768         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 769         pvr2_channel_init(&sfp->channel,mp);
 770         sfp->channel.check_func = pvr2_sysfs_internal_check;
 771
 772         class_dev_create(sfp,class_ptr);
 773         return sfp;
 774 }
 775
 776
 777
 778 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 779 {
 780         struct pvr2_sysfs_class *clp;
 781         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 782         if (!clp) return clp;
 783         pvr2_sysfs_trace("Creating and registering pvr2_sysfs_class id=%p",
 784                          clp);
 785         clp->class.name = "pvrusb2";
 786         clp->class.class_release = pvr2_sysfs_class_release;
 787         clp->class.dev_release = pvr2_sysfs_release;
 788         if (class_register(&clp->class)) {
 789                 pvr2_sysfs_trace(
 790                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 791                 kfree(clp);
 792                 clp = NULL;
 793         }
 794         return clp;
 795 }
 796
 797
 798 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
 799 {
 800         pvr2_sysfs_trace("Unregistering pvr2_sysfs_class id=%p", clp);
 801         class_unregister(&clp->class);
 802 }
 803
 804
 805 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 806 static ssize_t debuginfo_show(struct device *class_dev,
 807                               struct device_attribute *attr, char *buf)
 808 {
 809         struct pvr2_sysfs *sfp;
 810         sfp = dev_get_drvdata(class_dev);
 811         if (!sfp) return -EINVAL;
 812         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
 813         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
 814 }
 815
 816
 817 static ssize_t debugcmd_show(struct device *class_dev,
 818                              struct device_attribute *attr, char *buf)
 819 {
 820         struct pvr2_sysfs *sfp;
 821         sfp = dev_get_drvdata(class_dev);
 822         if (!sfp) return -EINVAL;
 823         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
 824 }
 825
 826
 827 static ssize_t debugcmd_store(struct device *class_dev,
 828                               struct device_attribute *attr,
 829                               const char *buf, size_t count)
 830 {
 831         struct pvr2_sysfs *sfp;
 832         int ret;
 833
 834         sfp = dev_get_drvdata(class_dev);
 835         if (!sfp) return -EINVAL;
 836
 837         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
 838         if (ret < 0) return ret;
 839         return count;
 840 }
 841 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 842
 843
 844 /*
 845   Stuff for Emacs to see, in order to encourage consistent editing style:
 846   *** Local Variables: ***
 847   *** mode: c ***
 848   *** fill-column: 75 ***
 849   *** tab-width: 8 ***
 850   *** c-basic-offset: 8 ***
 851   *** End: ***
 852   */