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[7];
  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         dip->attr_debugcmd.attr.name = "debugcmd";
 427         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 428         dip->attr_debugcmd.show = debugcmd_show;
 429         dip->attr_debugcmd.store = debugcmd_store;
 430         dip->attr_debuginfo.attr.name = "debuginfo";
 431         dip->attr_debuginfo.attr.mode = S_IRUGO;
 432         dip->attr_debuginfo.show = debuginfo_show;
 433         sfp->debugifc = dip;
 434         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 435         if (ret < 0) {
 436                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 437                            "device_create_file error: %d",
 438                            ret);
 439         } else {
 440                 dip->debugcmd_created_ok = !0;
 441         }
 442         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 443         if (ret < 0) {
 444                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 445                            "device_create_file error: %d",
 446                            ret);
 447         } else {
 448                 dip->debuginfo_created_ok = !0;
 449         }
 450 }
 451
 452
 453 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 454 {
 455         if (!sfp->debugifc) return;
 456         if (sfp->debugifc->debuginfo_created_ok) {
 457                 device_remove_file(sfp->class_dev,
 458                                          &sfp->debugifc->attr_debuginfo);
 459         }
 460         if (sfp->debugifc->debugcmd_created_ok) {
 461                 device_remove_file(sfp->class_dev,
 462                                          &sfp->debugifc->attr_debugcmd);
 463         }
 464         kfree(sfp->debugifc);
 465         sfp->debugifc = NULL;
 466 }
 467 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 468
 469
 470 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 471 {
 472         unsigned int idx,cnt;
 473         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 474         for (idx = 0; idx < cnt; idx++) {
 475                 pvr2_sysfs_add_control(sfp,idx);
 476         }
 477 }
 478
 479
 480 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 481 {
 482         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 483         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 484                 cip2 = cip1->item_next;
 485                 if (cip1->created_ok) {
 486                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 487                 }
 488                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 489                 kfree(cip1);
 490         }
 491 }
 492
 493
 494 static void pvr2_sysfs_class_release(struct class *class)
 495 {
 496         struct pvr2_sysfs_class *clp;
 497         clp = container_of(class,struct pvr2_sysfs_class,class);
 498         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 499         kfree(clp);
 500 }
 501
 502
 503 static void pvr2_sysfs_release(struct device *class_dev)
 504 {
 505         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 506         kfree(class_dev);
 507 }
 508
 509
 510 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 511 {
 512         if (!sfp->class_dev) return;
 513 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 514         pvr2_sysfs_tear_down_debugifc(sfp);
 515 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 516         pvr2_sysfs_tear_down_controls(sfp);
 517         if (sfp->hdw_desc_created_ok) {
 518                 device_remove_file(sfp->class_dev,
 519                                    &sfp->attr_hdw_desc);
 520         }
 521         if (sfp->hdw_name_created_ok) {
 522                 device_remove_file(sfp->class_dev,
 523                                    &sfp->attr_hdw_name);
 524         }
 525         if (sfp->bus_info_created_ok) {
 526                 device_remove_file(sfp->class_dev,
 527                                          &sfp->attr_bus_info);
 528         }
 529         if (sfp->v4l_minor_number_created_ok) {
 530                 device_remove_file(sfp->class_dev,
 531                                          &sfp->attr_v4l_minor_number);
 532         }
 533         if (sfp->v4l_radio_minor_number_created_ok) {
 534                 device_remove_file(sfp->class_dev,
 535                                          &sfp->attr_v4l_radio_minor_number);
 536         }
 537         if (sfp->unit_number_created_ok) {
 538                 device_remove_file(sfp->class_dev,
 539                                          &sfp->attr_unit_number);
 540         }
 541         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 542         dev_set_drvdata(sfp->class_dev, NULL);
 543         device_unregister(sfp->class_dev);
 544         sfp->class_dev = NULL;
 545 }
 546
 547
 548 static ssize_t v4l_minor_number_show(struct device *class_dev,
 549                                      struct device_attribute *attr, char *buf)
 550 {
 551         struct pvr2_sysfs *sfp;
 552         sfp = dev_get_drvdata(class_dev);
 553         if (!sfp) return -EINVAL;
 554         return scnprintf(buf,PAGE_SIZE,"%d\n",
 555                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 556                                                        pvr2_v4l_type_video));
 557 }
 558
 559
 560 static ssize_t bus_info_show(struct device *class_dev,
 561                              struct device_attribute *attr, char *buf)
 562 {
 563         struct pvr2_sysfs *sfp;
 564         sfp = dev_get_drvdata(class_dev);
 565         if (!sfp) return -EINVAL;
 566         return scnprintf(buf,PAGE_SIZE,"%s\n",
 567                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
 568 }
 569
 570
 571 static ssize_t hdw_name_show(struct device *class_dev,
 572                              struct device_attribute *attr, char *buf)
 573 {
 574         struct pvr2_sysfs *sfp;
 575         sfp = dev_get_drvdata(class_dev);
 576         if (!sfp) return -EINVAL;
 577         return scnprintf(buf,PAGE_SIZE,"%s\n",
 578                          pvr2_hdw_get_type(sfp->channel.hdw));
 579 }
 580
 581
 582 static ssize_t hdw_desc_show(struct device *class_dev,
 583                              struct device_attribute *attr, char *buf)
 584 {
 585         struct pvr2_sysfs *sfp;
 586         sfp = dev_get_drvdata(class_dev);
 587         if (!sfp) return -EINVAL;
 588         return scnprintf(buf,PAGE_SIZE,"%s\n",
 589                          pvr2_hdw_get_desc(sfp->channel.hdw));
 590 }
 591
 592
 593 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
 594                                            struct device_attribute *attr,
 595                                            char *buf)
 596 {
 597         struct pvr2_sysfs *sfp;
 598         sfp = dev_get_drvdata(class_dev);
 599         if (!sfp) return -EINVAL;
 600         return scnprintf(buf,PAGE_SIZE,"%d\n",
 601                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 602                                                        pvr2_v4l_type_radio));
 603 }
 604
 605
 606 static ssize_t unit_number_show(struct device *class_dev,
 607                                 struct device_attribute *attr, char *buf)
 608 {
 609         struct pvr2_sysfs *sfp;
 610         sfp = dev_get_drvdata(class_dev);
 611         if (!sfp) return -EINVAL;
 612         return scnprintf(buf,PAGE_SIZE,"%d\n",
 613                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 614 }
 615
 616
 617 static void class_dev_create(struct pvr2_sysfs *sfp,
 618                              struct pvr2_sysfs_class *class_ptr)
 619 {
 620         struct usb_device *usb_dev;
 621         struct device *class_dev;
 622         int ret;
 623
 624         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 625         if (!usb_dev) return;
 626         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 627         if (!class_dev) return;
 628
 629         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 630
 631         class_dev->class = &class_ptr->class;
 632         dev_set_name(class_dev, "%s",
 633                      pvr2_hdw_get_device_identifier(sfp->channel.hdw));
 634
 635         class_dev->parent = &usb_dev->dev;
 636
 637         sfp->class_dev = class_dev;
 638         dev_set_drvdata(class_dev, sfp);
 639         ret = device_register(class_dev);
 640         if (ret) {
 641                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 642                            "device_register failed");
 643                 kfree(class_dev);
 644                 return;
 645         }
 646
 647         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 648         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 649         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 650         sfp->attr_v4l_minor_number.store = NULL;
 651         ret = device_create_file(sfp->class_dev,
 652                                        &sfp->attr_v4l_minor_number);
 653         if (ret < 0) {
 654                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 655                            "device_create_file error: %d",
 656                            ret);
 657         } else {
 658                 sfp->v4l_minor_number_created_ok = !0;
 659         }
 660
 661         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 662         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 663         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 664         sfp->attr_v4l_radio_minor_number.store = NULL;
 665         ret = device_create_file(sfp->class_dev,
 666                                        &sfp->attr_v4l_radio_minor_number);
 667         if (ret < 0) {
 668                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 669                            "device_create_file error: %d",
 670                            ret);
 671         } else {
 672                 sfp->v4l_radio_minor_number_created_ok = !0;
 673         }
 674
 675         sfp->attr_unit_number.attr.name = "unit_number";
 676         sfp->attr_unit_number.attr.mode = S_IRUGO;
 677         sfp->attr_unit_number.show = unit_number_show;
 678         sfp->attr_unit_number.store = NULL;
 679         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 680         if (ret < 0) {
 681                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 682                            "device_create_file error: %d",
 683                            ret);
 684         } else {
 685                 sfp->unit_number_created_ok = !0;
 686         }
 687
 688         sfp->attr_bus_info.attr.name = "bus_info_str";
 689         sfp->attr_bus_info.attr.mode = S_IRUGO;
 690         sfp->attr_bus_info.show = bus_info_show;
 691         sfp->attr_bus_info.store = NULL;
 692         ret = device_create_file(sfp->class_dev,
 693                                        &sfp->attr_bus_info);
 694         if (ret < 0) {
 695                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 696                            "device_create_file error: %d",
 697                            ret);
 698         } else {
 699                 sfp->bus_info_created_ok = !0;
 700         }
 701
 702         sfp->attr_hdw_name.attr.name = "device_hardware_type";
 703         sfp->attr_hdw_name.attr.mode = S_IRUGO;
 704         sfp->attr_hdw_name.show = hdw_name_show;
 705         sfp->attr_hdw_name.store = NULL;
 706         ret = device_create_file(sfp->class_dev,
 707                                  &sfp->attr_hdw_name);
 708         if (ret < 0) {
 709                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 710                            "device_create_file error: %d",
 711                            ret);
 712         } else {
 713                 sfp->hdw_name_created_ok = !0;
 714         }
 715
 716         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
 717         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
 718         sfp->attr_hdw_desc.show = hdw_desc_show;
 719         sfp->attr_hdw_desc.store = NULL;
 720         ret = device_create_file(sfp->class_dev,
 721                                  &sfp->attr_hdw_desc);
 722         if (ret < 0) {
 723                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 724                            "device_create_file error: %d",
 725                            ret);
 726         } else {
 727                 sfp->hdw_desc_created_ok = !0;
 728         }
 729
 730         pvr2_sysfs_add_controls(sfp);
 731 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 732         pvr2_sysfs_add_debugifc(sfp);
 733 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 734 }
 735
 736
 737 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 738 {
 739         struct pvr2_sysfs *sfp;
 740         sfp = container_of(chp,struct pvr2_sysfs,channel);
 741         if (!sfp->channel.mc_head->disconnect_flag) return;
 742         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 743         class_dev_destroy(sfp);
 744         pvr2_channel_done(&sfp->channel);
 745         kfree(sfp);
 746 }
 747
 748
 749 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 750                                      struct pvr2_sysfs_class *class_ptr)
 751 {
 752         struct pvr2_sysfs *sfp;
 753         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 754         if (!sfp) return sfp;
 755         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 756         pvr2_channel_init(&sfp->channel,mp);
 757         sfp->channel.check_func = pvr2_sysfs_internal_check;
 758
 759         class_dev_create(sfp,class_ptr);
 760         return sfp;
 761 }
 762
 763
 764
 765 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 766 {
 767         struct pvr2_sysfs_class *clp;
 768         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 769         if (!clp) return clp;
 770         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
 771         clp->class.name = "pvrusb2";
 772         clp->class.class_release = pvr2_sysfs_class_release;
 773         clp->class.dev_release = pvr2_sysfs_release;
 774         if (class_register(&clp->class)) {
 775                 pvr2_sysfs_trace(
 776                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 777                 kfree(clp);
 778                 clp = NULL;
 779         }
 780         return clp;
 781 }
 782
 783
 784 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
 785 {
 786         class_unregister(&clp->class);
 787 }
 788
 789
 790 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 791 static ssize_t debuginfo_show(struct device *class_dev,
 792                               struct device_attribute *attr, char *buf)
 793 {
 794         struct pvr2_sysfs *sfp;
 795         sfp = dev_get_drvdata(class_dev);
 796         if (!sfp) return -EINVAL;
 797         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
 798         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
 799 }
 800
 801
 802 static ssize_t debugcmd_show(struct device *class_dev,
 803                              struct device_attribute *attr, char *buf)
 804 {
 805         struct pvr2_sysfs *sfp;
 806         sfp = dev_get_drvdata(class_dev);
 807         if (!sfp) return -EINVAL;
 808         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
 809 }
 810
 811
 812 static ssize_t debugcmd_store(struct device *class_dev,
 813                               struct device_attribute *attr,
 814                               const char *buf, size_t count)
 815 {
 816         struct pvr2_sysfs *sfp;
 817         int ret;
 818
 819         sfp = dev_get_drvdata(class_dev);
 820         if (!sfp) return -EINVAL;
 821
 822         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
 823         if (ret < 0) return ret;
 824         return count;
 825 }
 826 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 827
 828
 829 /*
 830   Stuff for Emacs to see, in order to encourage consistent editing style:
 831   *** Local Variables: ***
 832   *** mode: c ***
 833   *** fill-column: 75 ***
 834   *** tab-width: 8 ***
 835   *** c-basic-offset: 8 ***
 836   *** End: ***
 837   */