SAFE public projects git trees. - safe/jmp/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_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         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_def);
 157         ret = pvr2_ctrl_get_def(cip->cptr, &val);
 158         pvr2_sysfs_trace("pvr2_sysfs(%p) show_def(cid=%d) is %d, stat=%d",
 159                          cip->chptr, cip->ctl_id, val, ret);
 160         if (ret < 0) {
 161                 /* Keep checkpatch.pl quiet */
 162                 return ret;
 163         }
 164         return scnprintf(buf, PAGE_SIZE, "%d\n", val);
 165 }
 166
 167 static ssize_t show_val_norm(struct device *class_dev,
 168                              struct device_attribute *attr,
 169                              char *buf)
 170 {
 171         struct pvr2_sysfs_ctl_item *cip;
 172         int val;
 173         int ret;
 174         unsigned int cnt = 0;
 175         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
 176         ret = pvr2_ctrl_get_value(cip->cptr, &val);
 177         if (ret < 0) return ret;
 178         ret = pvr2_ctrl_value_to_sym(cip->cptr, ~0, val,
 179                                      buf, PAGE_SIZE - 1, &cnt);
 180         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_norm(cid=%d) is %.*s (%d)",
 181                          cip->chptr, cip->ctl_id, cnt, buf, val);
 182         buf[cnt] = '\n';
 183         return cnt+1;
 184 }
 185
 186 static ssize_t show_val_custom(struct device *class_dev,
 187                                struct device_attribute *attr,
 188                                char *buf)
 189 {
 190         struct pvr2_sysfs_ctl_item *cip;
 191         int val;
 192         int ret;
 193         unsigned int cnt = 0;
 194         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
 195         ret = pvr2_ctrl_get_value(cip->cptr, &val);
 196         if (ret < 0) return ret;
 197         ret = pvr2_ctrl_custom_value_to_sym(cip->cptr, ~0, val,
 198                                             buf, PAGE_SIZE - 1, &cnt);
 199         pvr2_sysfs_trace("pvr2_sysfs(%p) show_val_custom(cid=%d) is %.*s (%d)",
 200                          cip->chptr, cip->ctl_id, cnt, buf, val);
 201         buf[cnt] = '\n';
 202         return cnt+1;
 203 }
 204
 205 static ssize_t show_enum(struct device *class_dev,
 206                          struct device_attribute *attr,
 207                          char *buf)
 208 {
 209         struct pvr2_sysfs_ctl_item *cip;
 210         long val;
 211         unsigned int bcnt, ccnt, ecnt;
 212         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_enum);
 213         ecnt = pvr2_ctrl_get_cnt(cip->cptr);
 214         bcnt = 0;
 215         for (val = 0; val < ecnt; val++) {
 216                 pvr2_ctrl_get_valname(cip->cptr, val, buf + bcnt,
 217                                       PAGE_SIZE - bcnt, &ccnt);
 218                 if (!ccnt) continue;
 219                 bcnt += ccnt;
 220                 if (bcnt >= PAGE_SIZE) break;
 221                 buf[bcnt] = '\n';
 222                 bcnt++;
 223         }
 224         pvr2_sysfs_trace("pvr2_sysfs(%p) show_enum(cid=%d)",
 225                          cip->chptr, cip->ctl_id);
 226         return bcnt;
 227 }
 228
 229 static ssize_t show_bits(struct device *class_dev,
 230                          struct device_attribute *attr,
 231                          char *buf)
 232 {
 233         struct pvr2_sysfs_ctl_item *cip;
 234         int valid_bits, msk;
 235         unsigned int bcnt, ccnt;
 236         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_bits);
 237         valid_bits = pvr2_ctrl_get_mask(cip->cptr);
 238         bcnt = 0;
 239         for (msk = 1; valid_bits; msk <<= 1) {
 240                 if (!(msk & valid_bits)) continue;
 241                 valid_bits &= ~msk;
 242                 pvr2_ctrl_get_valname(cip->cptr, msk, buf + bcnt,
 243                                       PAGE_SIZE - bcnt, &ccnt);
 244                 bcnt += ccnt;
 245                 if (bcnt >= PAGE_SIZE) break;
 246                 buf[bcnt] = '\n';
 247                 bcnt++;
 248         }
 249         pvr2_sysfs_trace("pvr2_sysfs(%p) show_bits(cid=%d)",
 250                          cip->chptr, cip->ctl_id);
 251         return bcnt;
 252 }
 253
 254 static int store_val_any(struct pvr2_sysfs_ctl_item *cip, int customfl,
 255                          const char *buf,unsigned int count)
 256 {
 257         int ret;
 258         int mask,val;
 259         if (customfl) {
 260                 ret = pvr2_ctrl_custom_sym_to_value(cip->cptr, buf, count,
 261                                                     &mask, &val);
 262         } else {
 263                 ret = pvr2_ctrl_sym_to_value(cip->cptr, buf, count,
 264                                              &mask, &val);
 265         }
 266         if (ret < 0) return ret;
 267         ret = pvr2_ctrl_set_mask_value(cip->cptr, mask, val);
 268         pvr2_hdw_commit_ctl(cip->chptr->channel.hdw);
 269         return ret;
 270 }
 271
 272 static ssize_t store_val_norm(struct device *class_dev,
 273                               struct device_attribute *attr,
 274                               const char *buf, size_t count)
 275 {
 276         struct pvr2_sysfs_ctl_item *cip;
 277         int ret;
 278         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_val);
 279         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_norm(cid=%d) \"%.*s\"",
 280                          cip->chptr, cip->ctl_id, (int)count, buf);
 281         ret = store_val_any(cip, 0, buf, count);
 282         if (!ret) ret = count;
 283         return ret;
 284 }
 285
 286 static ssize_t store_val_custom(struct device *class_dev,
 287                                 struct device_attribute *attr,
 288                                 const char *buf, size_t count)
 289 {
 290         struct pvr2_sysfs_ctl_item *cip;
 291         int ret;
 292         cip = container_of(attr, struct pvr2_sysfs_ctl_item, attr_custom);
 293         pvr2_sysfs_trace("pvr2_sysfs(%p) store_val_custom(cid=%d) \"%.*s\"",
 294                          cip->chptr, cip->ctl_id, (int)count, buf);
 295         ret = store_val_any(cip, 1, buf, count);
 296         if (!ret) ret = count;
 297         return ret;
 298 }
 299
 300 static void pvr2_sysfs_add_control(struct pvr2_sysfs *sfp,int ctl_id)
 301 {
 302         struct pvr2_sysfs_ctl_item *cip;
 303         struct pvr2_ctrl *cptr;
 304         unsigned int cnt,acnt;
 305         int ret;
 306
 307         cptr = pvr2_hdw_get_ctrl_by_index(sfp->channel.hdw,ctl_id);
 308         if (!cptr) return;
 309
 310         cip = kzalloc(sizeof(*cip),GFP_KERNEL);
 311         if (!cip) return;
 312         pvr2_sysfs_trace("Creating pvr2_sysfs_ctl_item id=%p",cip);
 313
 314         cip->cptr = cptr;
 315         cip->ctl_id = ctl_id;
 316
 317         cip->chptr = sfp;
 318         cip->item_next = NULL;
 319         if (sfp->item_last) {
 320                 sfp->item_last->item_next = cip;
 321         } else {
 322                 sfp->item_first = cip;
 323         }
 324         sfp->item_last = cip;
 325
 326         cip->attr_name.attr.name = "name";
 327         cip->attr_name.attr.mode = S_IRUGO;
 328         cip->attr_name.show = show_name;
 329
 330         cip->attr_type.attr.name = "type";
 331         cip->attr_type.attr.mode = S_IRUGO;
 332         cip->attr_type.show = show_type;
 333
 334         cip->attr_min.attr.name = "min_val";
 335         cip->attr_min.attr.mode = S_IRUGO;
 336         cip->attr_min.show = show_min;
 337
 338         cip->attr_max.attr.name = "max_val";
 339         cip->attr_max.attr.mode = S_IRUGO;
 340         cip->attr_max.show = show_max;
 341
 342         cip->attr_def.attr.name = "def_val";
 343         cip->attr_def.attr.mode = S_IRUGO;
 344         cip->attr_def.show = show_def;
 345
 346         cip->attr_val.attr.name = "cur_val";
 347         cip->attr_val.attr.mode = S_IRUGO;
 348
 349         cip->attr_custom.attr.name = "custom_val";
 350         cip->attr_custom.attr.mode = S_IRUGO;
 351
 352         cip->attr_enum.attr.name = "enum_val";
 353         cip->attr_enum.attr.mode = S_IRUGO;
 354         cip->attr_enum.show = show_enum;
 355
 356         cip->attr_bits.attr.name = "bit_val";
 357         cip->attr_bits.attr.mode = S_IRUGO;
 358         cip->attr_bits.show = show_bits;
 359
 360         if (pvr2_ctrl_is_writable(cptr)) {
 361                 cip->attr_val.attr.mode |= S_IWUSR|S_IWGRP;
 362                 cip->attr_custom.attr.mode |= S_IWUSR|S_IWGRP;
 363         }
 364
 365         acnt = 0;
 366         cip->attr_gen[acnt++] = &cip->attr_name.attr;
 367         cip->attr_gen[acnt++] = &cip->attr_type.attr;
 368         cip->attr_gen[acnt++] = &cip->attr_val.attr;
 369         cip->attr_gen[acnt++] = &cip->attr_def.attr;
 370         cip->attr_val.show = show_val_norm;
 371         cip->attr_val.store = store_val_norm;
 372         if (pvr2_ctrl_has_custom_symbols(cptr)) {
 373                 cip->attr_gen[acnt++] = &cip->attr_custom.attr;
 374                 cip->attr_custom.show = show_val_custom;
 375                 cip->attr_custom.store = store_val_custom;
 376         }
 377         switch (pvr2_ctrl_get_type(cptr)) {
 378         case pvr2_ctl_enum:
 379                 // Control is an enumeration
 380                 cip->attr_gen[acnt++] = &cip->attr_enum.attr;
 381                 break;
 382         case pvr2_ctl_int:
 383                 // Control is an integer
 384                 cip->attr_gen[acnt++] = &cip->attr_min.attr;
 385                 cip->attr_gen[acnt++] = &cip->attr_max.attr;
 386                 break;
 387         case pvr2_ctl_bitmask:
 388                 // Control is an bitmask
 389                 cip->attr_gen[acnt++] = &cip->attr_bits.attr;
 390                 break;
 391         default: break;
 392         }
 393
 394         cnt = scnprintf(cip->name,sizeof(cip->name)-1,"ctl_%s",
 395                         pvr2_ctrl_get_name(cptr));
 396         cip->name[cnt] = 0;
 397         cip->grp.name = cip->name;
 398         cip->grp.attrs = cip->attr_gen;
 399
 400         ret = sysfs_create_group(&sfp->class_dev->kobj,&cip->grp);
 401         if (ret) {
 402                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 403                            "sysfs_create_group error: %d",
 404                            ret);
 405                 return;
 406         }
 407         cip->created_ok = !0;
 408 }
 409
 410 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 411 static ssize_t debuginfo_show(struct device *, struct device_attribute *,
 412                               char *);
 413 static ssize_t debugcmd_show(struct device *, struct device_attribute *,
 414                              char *);
 415 static ssize_t debugcmd_store(struct device *, struct device_attribute *,
 416                               const char *, size_t count);
 417
 418 static void pvr2_sysfs_add_debugifc(struct pvr2_sysfs *sfp)
 419 {
 420         struct pvr2_sysfs_debugifc *dip;
 421         int ret;
 422
 423         dip = kzalloc(sizeof(*dip),GFP_KERNEL);
 424         if (!dip) return;
 425         dip->attr_debugcmd.attr.name = "debugcmd";
 426         dip->attr_debugcmd.attr.mode = S_IRUGO|S_IWUSR|S_IWGRP;
 427         dip->attr_debugcmd.show = debugcmd_show;
 428         dip->attr_debugcmd.store = debugcmd_store;
 429         dip->attr_debuginfo.attr.name = "debuginfo";
 430         dip->attr_debuginfo.attr.mode = S_IRUGO;
 431         dip->attr_debuginfo.show = debuginfo_show;
 432         sfp->debugifc = dip;
 433         ret = device_create_file(sfp->class_dev,&dip->attr_debugcmd);
 434         if (ret < 0) {
 435                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 436                            "device_create_file error: %d",
 437                            ret);
 438         } else {
 439                 dip->debugcmd_created_ok = !0;
 440         }
 441         ret = device_create_file(sfp->class_dev,&dip->attr_debuginfo);
 442         if (ret < 0) {
 443                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 444                            "device_create_file error: %d",
 445                            ret);
 446         } else {
 447                 dip->debuginfo_created_ok = !0;
 448         }
 449 }
 450
 451
 452 static void pvr2_sysfs_tear_down_debugifc(struct pvr2_sysfs *sfp)
 453 {
 454         if (!sfp->debugifc) return;
 455         if (sfp->debugifc->debuginfo_created_ok) {
 456                 device_remove_file(sfp->class_dev,
 457                                          &sfp->debugifc->attr_debuginfo);
 458         }
 459         if (sfp->debugifc->debugcmd_created_ok) {
 460                 device_remove_file(sfp->class_dev,
 461                                          &sfp->debugifc->attr_debugcmd);
 462         }
 463         kfree(sfp->debugifc);
 464         sfp->debugifc = NULL;
 465 }
 466 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 467
 468
 469 static void pvr2_sysfs_add_controls(struct pvr2_sysfs *sfp)
 470 {
 471         unsigned int idx,cnt;
 472         cnt = pvr2_hdw_get_ctrl_count(sfp->channel.hdw);
 473         for (idx = 0; idx < cnt; idx++) {
 474                 pvr2_sysfs_add_control(sfp,idx);
 475         }
 476 }
 477
 478
 479 static void pvr2_sysfs_tear_down_controls(struct pvr2_sysfs *sfp)
 480 {
 481         struct pvr2_sysfs_ctl_item *cip1,*cip2;
 482         for (cip1 = sfp->item_first; cip1; cip1 = cip2) {
 483                 cip2 = cip1->item_next;
 484                 if (cip1->created_ok) {
 485                         sysfs_remove_group(&sfp->class_dev->kobj,&cip1->grp);
 486                 }
 487                 pvr2_sysfs_trace("Destroying pvr2_sysfs_ctl_item id=%p",cip1);
 488                 kfree(cip1);
 489         }
 490 }
 491
 492
 493 static void pvr2_sysfs_class_release(struct class *class)
 494 {
 495         struct pvr2_sysfs_class *clp;
 496         clp = container_of(class,struct pvr2_sysfs_class,class);
 497         pvr2_sysfs_trace("Destroying pvr2_sysfs_class id=%p",clp);
 498         kfree(clp);
 499 }
 500
 501
 502 static void pvr2_sysfs_release(struct device *class_dev)
 503 {
 504         pvr2_sysfs_trace("Releasing class_dev id=%p",class_dev);
 505         kfree(class_dev);
 506 }
 507
 508
 509 static void class_dev_destroy(struct pvr2_sysfs *sfp)
 510 {
 511         if (!sfp->class_dev) return;
 512 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 513         pvr2_sysfs_tear_down_debugifc(sfp);
 514 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 515         pvr2_sysfs_tear_down_controls(sfp);
 516         if (sfp->hdw_desc_created_ok) {
 517                 device_remove_file(sfp->class_dev,
 518                                    &sfp->attr_hdw_desc);
 519         }
 520         if (sfp->hdw_name_created_ok) {
 521                 device_remove_file(sfp->class_dev,
 522                                    &sfp->attr_hdw_name);
 523         }
 524         if (sfp->bus_info_created_ok) {
 525                 device_remove_file(sfp->class_dev,
 526                                          &sfp->attr_bus_info);
 527         }
 528         if (sfp->v4l_minor_number_created_ok) {
 529                 device_remove_file(sfp->class_dev,
 530                                          &sfp->attr_v4l_minor_number);
 531         }
 532         if (sfp->v4l_radio_minor_number_created_ok) {
 533                 device_remove_file(sfp->class_dev,
 534                                          &sfp->attr_v4l_radio_minor_number);
 535         }
 536         if (sfp->unit_number_created_ok) {
 537                 device_remove_file(sfp->class_dev,
 538                                          &sfp->attr_unit_number);
 539         }
 540         pvr2_sysfs_trace("Destroying class_dev id=%p",sfp->class_dev);
 541         sfp->class_dev->driver_data = NULL;
 542         device_unregister(sfp->class_dev);
 543         sfp->class_dev = NULL;
 544 }
 545
 546
 547 static ssize_t v4l_minor_number_show(struct device *class_dev,
 548                                      struct device_attribute *attr, char *buf)
 549 {
 550         struct pvr2_sysfs *sfp;
 551         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 552         if (!sfp) return -EINVAL;
 553         return scnprintf(buf,PAGE_SIZE,"%d\n",
 554                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 555                                                        pvr2_v4l_type_video));
 556 }
 557
 558
 559 static ssize_t bus_info_show(struct device *class_dev,
 560                              struct device_attribute *attr, char *buf)
 561 {
 562         struct pvr2_sysfs *sfp;
 563         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 564         if (!sfp) return -EINVAL;
 565         return scnprintf(buf,PAGE_SIZE,"%s\n",
 566                          pvr2_hdw_get_bus_info(sfp->channel.hdw));
 567 }
 568
 569
 570 static ssize_t hdw_name_show(struct device *class_dev,
 571                              struct device_attribute *attr, char *buf)
 572 {
 573         struct pvr2_sysfs *sfp;
 574         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 575         if (!sfp) return -EINVAL;
 576         return scnprintf(buf,PAGE_SIZE,"%s\n",
 577                          pvr2_hdw_get_type(sfp->channel.hdw));
 578 }
 579
 580
 581 static ssize_t hdw_desc_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,"%s\n",
 588                          pvr2_hdw_get_desc(sfp->channel.hdw));
 589 }
 590
 591
 592 static ssize_t v4l_radio_minor_number_show(struct device *class_dev,
 593                                            struct device_attribute *attr,
 594                                            char *buf)
 595 {
 596         struct pvr2_sysfs *sfp;
 597         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 598         if (!sfp) return -EINVAL;
 599         return scnprintf(buf,PAGE_SIZE,"%d\n",
 600                          pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw,
 601                                                        pvr2_v4l_type_radio));
 602 }
 603
 604
 605 static ssize_t unit_number_show(struct device *class_dev,
 606                                 struct device_attribute *attr, char *buf)
 607 {
 608         struct pvr2_sysfs *sfp;
 609         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 610         if (!sfp) return -EINVAL;
 611         return scnprintf(buf,PAGE_SIZE,"%d\n",
 612                          pvr2_hdw_get_unit_number(sfp->channel.hdw));
 613 }
 614
 615
 616 static void class_dev_create(struct pvr2_sysfs *sfp,
 617                              struct pvr2_sysfs_class *class_ptr)
 618 {
 619         struct usb_device *usb_dev;
 620         struct device *class_dev;
 621         int ret;
 622
 623         usb_dev = pvr2_hdw_get_dev(sfp->channel.hdw);
 624         if (!usb_dev) return;
 625         class_dev = kzalloc(sizeof(*class_dev),GFP_KERNEL);
 626         if (!class_dev) return;
 627
 628         pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 629
 630         class_dev->class = &class_ptr->class;
 631         if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
 632                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "sn-%lu",
 633                          pvr2_hdw_get_sn(sfp->channel.hdw));
 634         } else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
 635                 snprintf(class_dev->bus_id, BUS_ID_SIZE, "unit-%c",
 636                          pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
 637         } else {
 638                 kfree(class_dev);
 639                 return;
 640         }
 641
 642         class_dev->parent = &usb_dev->dev;
 643
 644         sfp->class_dev = class_dev;
 645         class_dev->driver_data = 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         sfp->attr_v4l_minor_number.attr.name = "v4l_minor_number";
 655         sfp->attr_v4l_minor_number.attr.mode = S_IRUGO;
 656         sfp->attr_v4l_minor_number.show = v4l_minor_number_show;
 657         sfp->attr_v4l_minor_number.store = NULL;
 658         ret = device_create_file(sfp->class_dev,
 659                                        &sfp->attr_v4l_minor_number);
 660         if (ret < 0) {
 661                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 662                            "device_create_file error: %d",
 663                            ret);
 664         } else {
 665                 sfp->v4l_minor_number_created_ok = !0;
 666         }
 667
 668         sfp->attr_v4l_radio_minor_number.attr.name = "v4l_radio_minor_number";
 669         sfp->attr_v4l_radio_minor_number.attr.mode = S_IRUGO;
 670         sfp->attr_v4l_radio_minor_number.show = v4l_radio_minor_number_show;
 671         sfp->attr_v4l_radio_minor_number.store = NULL;
 672         ret = device_create_file(sfp->class_dev,
 673                                        &sfp->attr_v4l_radio_minor_number);
 674         if (ret < 0) {
 675                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 676                            "device_create_file error: %d",
 677                            ret);
 678         } else {
 679                 sfp->v4l_radio_minor_number_created_ok = !0;
 680         }
 681
 682         sfp->attr_unit_number.attr.name = "unit_number";
 683         sfp->attr_unit_number.attr.mode = S_IRUGO;
 684         sfp->attr_unit_number.show = unit_number_show;
 685         sfp->attr_unit_number.store = NULL;
 686         ret = device_create_file(sfp->class_dev,&sfp->attr_unit_number);
 687         if (ret < 0) {
 688                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 689                            "device_create_file error: %d",
 690                            ret);
 691         } else {
 692                 sfp->unit_number_created_ok = !0;
 693         }
 694
 695         sfp->attr_bus_info.attr.name = "bus_info_str";
 696         sfp->attr_bus_info.attr.mode = S_IRUGO;
 697         sfp->attr_bus_info.show = bus_info_show;
 698         sfp->attr_bus_info.store = NULL;
 699         ret = device_create_file(sfp->class_dev,
 700                                        &sfp->attr_bus_info);
 701         if (ret < 0) {
 702                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 703                            "device_create_file error: %d",
 704                            ret);
 705         } else {
 706                 sfp->bus_info_created_ok = !0;
 707         }
 708
 709         sfp->attr_hdw_name.attr.name = "device_hardware_type";
 710         sfp->attr_hdw_name.attr.mode = S_IRUGO;
 711         sfp->attr_hdw_name.show = hdw_name_show;
 712         sfp->attr_hdw_name.store = NULL;
 713         ret = device_create_file(sfp->class_dev,
 714                                  &sfp->attr_hdw_name);
 715         if (ret < 0) {
 716                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 717                            "device_create_file error: %d",
 718                            ret);
 719         } else {
 720                 sfp->hdw_name_created_ok = !0;
 721         }
 722
 723         sfp->attr_hdw_desc.attr.name = "device_hardware_description";
 724         sfp->attr_hdw_desc.attr.mode = S_IRUGO;
 725         sfp->attr_hdw_desc.show = hdw_desc_show;
 726         sfp->attr_hdw_desc.store = NULL;
 727         ret = device_create_file(sfp->class_dev,
 728                                  &sfp->attr_hdw_desc);
 729         if (ret < 0) {
 730                 pvr2_trace(PVR2_TRACE_ERROR_LEGS,
 731                            "device_create_file error: %d",
 732                            ret);
 733         } else {
 734                 sfp->hdw_desc_created_ok = !0;
 735         }
 736
 737         pvr2_sysfs_add_controls(sfp);
 738 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 739         pvr2_sysfs_add_debugifc(sfp);
 740 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 741 }
 742
 743
 744 static void pvr2_sysfs_internal_check(struct pvr2_channel *chp)
 745 {
 746         struct pvr2_sysfs *sfp;
 747         sfp = container_of(chp,struct pvr2_sysfs,channel);
 748         if (!sfp->channel.mc_head->disconnect_flag) return;
 749         pvr2_trace(PVR2_TRACE_STRUCT,"Destroying pvr2_sysfs id=%p",sfp);
 750         class_dev_destroy(sfp);
 751         pvr2_channel_done(&sfp->channel);
 752         kfree(sfp);
 753 }
 754
 755
 756 struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp,
 757                                      struct pvr2_sysfs_class *class_ptr)
 758 {
 759         struct pvr2_sysfs *sfp;
 760         sfp = kzalloc(sizeof(*sfp),GFP_KERNEL);
 761         if (!sfp) return sfp;
 762         pvr2_trace(PVR2_TRACE_STRUCT,"Creating pvr2_sysfs id=%p",sfp);
 763         pvr2_channel_init(&sfp->channel,mp);
 764         sfp->channel.check_func = pvr2_sysfs_internal_check;
 765
 766         class_dev_create(sfp,class_ptr);
 767         return sfp;
 768 }
 769
 770
 771
 772 struct pvr2_sysfs_class *pvr2_sysfs_class_create(void)
 773 {
 774         struct pvr2_sysfs_class *clp;
 775         clp = kzalloc(sizeof(*clp),GFP_KERNEL);
 776         if (!clp) return clp;
 777         pvr2_sysfs_trace("Creating pvr2_sysfs_class id=%p",clp);
 778         clp->class.name = "pvrusb2";
 779         clp->class.class_release = pvr2_sysfs_class_release;
 780         clp->class.dev_release = pvr2_sysfs_release;
 781         if (class_register(&clp->class)) {
 782                 pvr2_sysfs_trace(
 783                         "Registration failed for pvr2_sysfs_class id=%p",clp);
 784                 kfree(clp);
 785                 clp = NULL;
 786         }
 787         return clp;
 788 }
 789
 790
 791 void pvr2_sysfs_class_destroy(struct pvr2_sysfs_class *clp)
 792 {
 793         class_unregister(&clp->class);
 794 }
 795
 796
 797 #ifdef CONFIG_VIDEO_PVRUSB2_DEBUGIFC
 798 static ssize_t debuginfo_show(struct device *class_dev,
 799                               struct device_attribute *attr, char *buf)
 800 {
 801         struct pvr2_sysfs *sfp;
 802         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 803         if (!sfp) return -EINVAL;
 804         pvr2_hdw_trigger_module_log(sfp->channel.hdw);
 805         return pvr2_debugifc_print_info(sfp->channel.hdw,buf,PAGE_SIZE);
 806 }
 807
 808
 809 static ssize_t debugcmd_show(struct device *class_dev,
 810                              struct device_attribute *attr, char *buf)
 811 {
 812         struct pvr2_sysfs *sfp;
 813         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 814         if (!sfp) return -EINVAL;
 815         return pvr2_debugifc_print_status(sfp->channel.hdw,buf,PAGE_SIZE);
 816 }
 817
 818
 819 static ssize_t debugcmd_store(struct device *class_dev,
 820                               struct device_attribute *attr,
 821                               const char *buf, size_t count)
 822 {
 823         struct pvr2_sysfs *sfp;
 824         int ret;
 825
 826         sfp = (struct pvr2_sysfs *)class_dev->driver_data;
 827         if (!sfp) return -EINVAL;
 828
 829         ret = pvr2_debugifc_docmd(sfp->channel.hdw,buf,count);
 830         if (ret < 0) return ret;
 831         return count;
 832 }
 833 #endif /* CONFIG_VIDEO_PVRUSB2_DEBUGIFC */
 834
 835
 836 /*
 837   Stuff for Emacs to see, in order to encourage consistent editing style:
 838   *** Local Variables: ***
 839   *** mode: c ***
 840   *** fill-column: 75 ***
 841   *** tab-width: 8 ***
 842   *** c-basic-offset: 8 ***
 843   *** End: ***
 844   */