Andrzej Pietrasiewicz | 46919a2 | 2014-12-10 12:34:02 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * uvc_configfs.c |
| 3 | * |
| 4 | * Configfs support for the uvc function. |
| 5 | * |
| 6 | * Copyright (c) 2014 Samsung Electronics Co., Ltd. |
| 7 | * http://www.samsung.com |
| 8 | * |
| 9 | * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License version 2 as |
| 13 | * published by the Free Software Foundation. |
| 14 | */ |
| 15 | #include "u_uvc.h" |
| 16 | #include "uvc_configfs.h" |
| 17 | |
| 18 | #define UVCG_STREAMING_CONTROL_SIZE 1 |
| 19 | |
| 20 | #define CONFIGFS_ATTR_OPS_RO(_item) \ |
| 21 | static ssize_t _item##_attr_show(struct config_item *item, \ |
| 22 | struct configfs_attribute *attr, \ |
| 23 | char *page) \ |
| 24 | { \ |
| 25 | struct _item *_item = to_##_item(item); \ |
| 26 | struct _item##_attribute *_item##_attr = \ |
| 27 | container_of(attr, struct _item##_attribute, attr); \ |
| 28 | ssize_t ret = 0; \ |
| 29 | \ |
| 30 | if (_item##_attr->show) \ |
| 31 | ret = _item##_attr->show(_item, page); \ |
| 32 | return ret; \ |
| 33 | } |
| 34 | |
| 35 | static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item); |
| 36 | |
| 37 | /* control/header/<NAME> */ |
| 38 | DECLARE_UVC_HEADER_DESCRIPTOR(1); |
| 39 | |
| 40 | struct uvcg_control_header { |
| 41 | struct config_item item; |
| 42 | struct UVC_HEADER_DESCRIPTOR(1) desc; |
| 43 | unsigned linked; |
| 44 | }; |
| 45 | |
| 46 | struct uvcg_control_header *to_uvcg_control_header(struct config_item *item) |
| 47 | { |
| 48 | return container_of(item, struct uvcg_control_header, item); |
| 49 | } |
| 50 | |
| 51 | CONFIGFS_ATTR_STRUCT(uvcg_control_header); |
| 52 | CONFIGFS_ATTR_OPS(uvcg_control_header); |
| 53 | |
| 54 | static struct configfs_item_operations uvcg_control_header_item_ops = { |
| 55 | .show_attribute = uvcg_control_header_attr_show, |
| 56 | .store_attribute = uvcg_control_header_attr_store, |
| 57 | }; |
| 58 | |
| 59 | #define UVCG_CTRL_HDR_ATTR(cname, aname, conv, str2u, uxx, vnoc, limit) \ |
| 60 | static ssize_t uvcg_control_header_##cname##_show( \ |
| 61 | struct uvcg_control_header *ch, char *page) \ |
| 62 | { \ |
| 63 | struct f_uvc_opts *opts; \ |
| 64 | struct config_item *opts_item; \ |
| 65 | struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\ |
| 66 | int result; \ |
| 67 | \ |
| 68 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 69 | \ |
| 70 | opts_item = ch->item.ci_parent->ci_parent->ci_parent; \ |
| 71 | opts = to_f_uvc_opts(opts_item); \ |
| 72 | \ |
| 73 | mutex_lock(&opts->lock); \ |
| 74 | result = sprintf(page, "%d\n", conv(ch->desc.aname)); \ |
| 75 | mutex_unlock(&opts->lock); \ |
| 76 | \ |
| 77 | mutex_unlock(su_mutex); \ |
| 78 | return result; \ |
| 79 | } \ |
| 80 | \ |
| 81 | static ssize_t \ |
| 82 | uvcg_control_header_##cname##_store(struct uvcg_control_header *ch, \ |
| 83 | const char *page, size_t len) \ |
| 84 | { \ |
| 85 | struct f_uvc_opts *opts; \ |
| 86 | struct config_item *opts_item; \ |
| 87 | struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\ |
| 88 | int ret; \ |
| 89 | uxx num; \ |
| 90 | \ |
| 91 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 92 | \ |
| 93 | opts_item = ch->item.ci_parent->ci_parent->ci_parent; \ |
| 94 | opts = to_f_uvc_opts(opts_item); \ |
| 95 | \ |
| 96 | mutex_lock(&opts->lock); \ |
| 97 | if (ch->linked || opts->refcnt) { \ |
| 98 | ret = -EBUSY; \ |
| 99 | goto end; \ |
| 100 | } \ |
| 101 | \ |
| 102 | ret = str2u(page, 0, &num); \ |
| 103 | if (ret) \ |
| 104 | goto end; \ |
| 105 | \ |
| 106 | if (num > limit) { \ |
| 107 | ret = -EINVAL; \ |
| 108 | goto end; \ |
| 109 | } \ |
| 110 | ch->desc.aname = vnoc(num); \ |
| 111 | ret = len; \ |
| 112 | end: \ |
| 113 | mutex_unlock(&opts->lock); \ |
| 114 | mutex_unlock(su_mutex); \ |
| 115 | return ret; \ |
| 116 | } \ |
| 117 | \ |
| 118 | static struct uvcg_control_header_attribute \ |
| 119 | uvcg_control_header_##cname = \ |
| 120 | __CONFIGFS_ATTR(aname, S_IRUGO | S_IWUSR, \ |
| 121 | uvcg_control_header_##cname##_show, \ |
| 122 | uvcg_control_header_##cname##_store) |
| 123 | |
| 124 | UVCG_CTRL_HDR_ATTR(bcd_uvc, bcdUVC, le16_to_cpu, kstrtou16, u16, cpu_to_le16, |
| 125 | 0xffff); |
| 126 | |
| 127 | UVCG_CTRL_HDR_ATTR(dw_clock_frequency, dwClockFrequency, le32_to_cpu, kstrtou32, |
| 128 | u32, cpu_to_le32, 0x7fffffff); |
| 129 | |
| 130 | #undef UVCG_CTRL_HDR_ATTR |
| 131 | |
| 132 | static struct configfs_attribute *uvcg_control_header_attrs[] = { |
| 133 | &uvcg_control_header_bcd_uvc.attr, |
| 134 | &uvcg_control_header_dw_clock_frequency.attr, |
| 135 | NULL, |
| 136 | }; |
| 137 | |
| 138 | struct config_item_type uvcg_control_header_type = { |
| 139 | .ct_item_ops = &uvcg_control_header_item_ops, |
| 140 | .ct_attrs = uvcg_control_header_attrs, |
| 141 | .ct_owner = THIS_MODULE, |
| 142 | }; |
| 143 | |
| 144 | static struct config_item *uvcg_control_header_make(struct config_group *group, |
| 145 | const char *name) |
| 146 | { |
| 147 | struct uvcg_control_header *h; |
| 148 | |
| 149 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
| 150 | if (!h) |
| 151 | return ERR_CAST(h); |
| 152 | |
| 153 | h->desc.bLength = UVC_DT_HEADER_SIZE(1); |
| 154 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; |
| 155 | h->desc.bDescriptorSubType = UVC_VC_HEADER; |
| 156 | h->desc.bcdUVC = cpu_to_le16(0x0100); |
| 157 | h->desc.dwClockFrequency = cpu_to_le32(48000000); |
| 158 | |
| 159 | config_item_init_type_name(&h->item, name, &uvcg_control_header_type); |
| 160 | |
| 161 | return &h->item; |
| 162 | } |
| 163 | |
| 164 | void uvcg_control_header_drop(struct config_group *group, |
| 165 | struct config_item *item) |
| 166 | { |
| 167 | struct uvcg_control_header *h = to_uvcg_control_header(item); |
| 168 | |
| 169 | kfree(h); |
| 170 | } |
| 171 | |
| 172 | /* control/header */ |
| 173 | static struct uvcg_control_header_grp { |
| 174 | struct config_group group; |
| 175 | } uvcg_control_header_grp; |
| 176 | |
| 177 | static struct configfs_group_operations uvcg_control_header_grp_ops = { |
| 178 | .make_item = uvcg_control_header_make, |
| 179 | .drop_item = uvcg_control_header_drop, |
| 180 | }; |
| 181 | |
| 182 | static struct config_item_type uvcg_control_header_grp_type = { |
| 183 | .ct_group_ops = &uvcg_control_header_grp_ops, |
| 184 | .ct_owner = THIS_MODULE, |
| 185 | }; |
| 186 | |
| 187 | /* control/processing/default */ |
| 188 | static struct uvcg_default_processing { |
| 189 | struct config_group group; |
| 190 | } uvcg_default_processing; |
| 191 | |
| 192 | static inline struct uvcg_default_processing |
| 193 | *to_uvcg_default_processing(struct config_item *item) |
| 194 | { |
| 195 | return container_of(to_config_group(item), |
| 196 | struct uvcg_default_processing, group); |
| 197 | } |
| 198 | |
| 199 | CONFIGFS_ATTR_STRUCT(uvcg_default_processing); |
| 200 | CONFIGFS_ATTR_OPS_RO(uvcg_default_processing); |
| 201 | |
| 202 | static struct configfs_item_operations uvcg_default_processing_item_ops = { |
| 203 | .show_attribute = uvcg_default_processing_attr_show, |
| 204 | }; |
| 205 | |
| 206 | #define UVCG_DEFAULT_PROCESSING_ATTR(cname, aname, conv) \ |
| 207 | static ssize_t uvcg_default_processing_##cname##_show( \ |
| 208 | struct uvcg_default_processing *dp, char *page) \ |
| 209 | { \ |
| 210 | struct f_uvc_opts *opts; \ |
| 211 | struct config_item *opts_item; \ |
| 212 | struct mutex *su_mutex = &dp->group.cg_subsys->su_mutex; \ |
| 213 | struct uvc_processing_unit_descriptor *pd; \ |
| 214 | int result; \ |
| 215 | \ |
| 216 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 217 | \ |
| 218 | opts_item = dp->group.cg_item.ci_parent->ci_parent->ci_parent; \ |
| 219 | opts = to_f_uvc_opts(opts_item); \ |
| 220 | pd = &opts->uvc_processing; \ |
| 221 | \ |
| 222 | mutex_lock(&opts->lock); \ |
| 223 | result = sprintf(page, "%d\n", conv(pd->aname)); \ |
| 224 | mutex_unlock(&opts->lock); \ |
| 225 | \ |
| 226 | mutex_unlock(su_mutex); \ |
| 227 | return result; \ |
| 228 | } \ |
| 229 | \ |
| 230 | static struct uvcg_default_processing_attribute \ |
| 231 | uvcg_default_processing_##cname = \ |
| 232 | __CONFIGFS_ATTR_RO(aname, uvcg_default_processing_##cname##_show) |
| 233 | |
| 234 | #define identity_conv(x) (x) |
| 235 | |
| 236 | UVCG_DEFAULT_PROCESSING_ATTR(b_unit_id, bUnitID, identity_conv); |
| 237 | UVCG_DEFAULT_PROCESSING_ATTR(b_source_id, bSourceID, identity_conv); |
| 238 | UVCG_DEFAULT_PROCESSING_ATTR(w_max_multiplier, wMaxMultiplier, le16_to_cpu); |
| 239 | UVCG_DEFAULT_PROCESSING_ATTR(i_processing, iProcessing, identity_conv); |
| 240 | |
| 241 | #undef identity_conv |
| 242 | |
| 243 | #undef UVCG_DEFAULT_PROCESSING_ATTR |
| 244 | |
| 245 | static ssize_t uvcg_default_processing_bm_controls_show( |
| 246 | struct uvcg_default_processing *dp, char *page) |
| 247 | { |
| 248 | struct f_uvc_opts *opts; |
| 249 | struct config_item *opts_item; |
| 250 | struct mutex *su_mutex = &dp->group.cg_subsys->su_mutex; |
| 251 | struct uvc_processing_unit_descriptor *pd; |
| 252 | int result, i; |
| 253 | char *pg = page; |
| 254 | |
| 255 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 256 | |
| 257 | opts_item = dp->group.cg_item.ci_parent->ci_parent->ci_parent; |
| 258 | opts = to_f_uvc_opts(opts_item); |
| 259 | pd = &opts->uvc_processing; |
| 260 | |
| 261 | mutex_lock(&opts->lock); |
| 262 | for (result = 0, i = 0; i < pd->bControlSize; ++i) { |
| 263 | result += sprintf(pg, "%d\n", pd->bmControls[i]); |
| 264 | pg = page + result; |
| 265 | } |
| 266 | mutex_unlock(&opts->lock); |
| 267 | |
| 268 | mutex_unlock(su_mutex); |
| 269 | |
| 270 | return result; |
| 271 | } |
| 272 | |
| 273 | static struct uvcg_default_processing_attribute |
| 274 | uvcg_default_processing_bm_controls = |
| 275 | __CONFIGFS_ATTR_RO(bmControls, |
| 276 | uvcg_default_processing_bm_controls_show); |
| 277 | |
| 278 | static struct configfs_attribute *uvcg_default_processing_attrs[] = { |
| 279 | &uvcg_default_processing_b_unit_id.attr, |
| 280 | &uvcg_default_processing_b_source_id.attr, |
| 281 | &uvcg_default_processing_w_max_multiplier.attr, |
| 282 | &uvcg_default_processing_bm_controls.attr, |
| 283 | &uvcg_default_processing_i_processing.attr, |
| 284 | NULL, |
| 285 | }; |
| 286 | |
| 287 | static struct config_item_type uvcg_default_processing_type = { |
| 288 | .ct_item_ops = &uvcg_default_processing_item_ops, |
| 289 | .ct_attrs = uvcg_default_processing_attrs, |
| 290 | .ct_owner = THIS_MODULE, |
| 291 | }; |
| 292 | |
| 293 | /* struct uvcg_processing {}; */ |
| 294 | |
| 295 | static struct config_group *uvcg_processing_default_groups[] = { |
| 296 | &uvcg_default_processing.group, |
| 297 | NULL, |
| 298 | }; |
| 299 | |
| 300 | /* control/processing */ |
| 301 | static struct uvcg_processing_grp { |
| 302 | struct config_group group; |
| 303 | } uvcg_processing_grp; |
| 304 | |
| 305 | static struct config_item_type uvcg_processing_grp_type = { |
| 306 | .ct_owner = THIS_MODULE, |
| 307 | }; |
| 308 | |
| 309 | /* control/terminal/camera/default */ |
| 310 | static struct uvcg_default_camera { |
| 311 | struct config_group group; |
| 312 | } uvcg_default_camera; |
| 313 | |
| 314 | static inline struct uvcg_default_camera |
| 315 | *to_uvcg_default_camera(struct config_item *item) |
| 316 | { |
| 317 | return container_of(to_config_group(item), |
| 318 | struct uvcg_default_camera, group); |
| 319 | } |
| 320 | |
| 321 | CONFIGFS_ATTR_STRUCT(uvcg_default_camera); |
| 322 | CONFIGFS_ATTR_OPS_RO(uvcg_default_camera); |
| 323 | |
| 324 | static struct configfs_item_operations uvcg_default_camera_item_ops = { |
| 325 | .show_attribute = uvcg_default_camera_attr_show, |
| 326 | }; |
| 327 | |
| 328 | #define UVCG_DEFAULT_CAMERA_ATTR(cname, aname, conv) \ |
| 329 | static ssize_t uvcg_default_camera_##cname##_show( \ |
| 330 | struct uvcg_default_camera *dc, char *page) \ |
| 331 | { \ |
| 332 | struct f_uvc_opts *opts; \ |
| 333 | struct config_item *opts_item; \ |
| 334 | struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; \ |
| 335 | struct uvc_camera_terminal_descriptor *cd; \ |
| 336 | int result; \ |
| 337 | \ |
| 338 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 339 | \ |
| 340 | opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent-> \ |
| 341 | ci_parent; \ |
| 342 | opts = to_f_uvc_opts(opts_item); \ |
| 343 | cd = &opts->uvc_camera_terminal; \ |
| 344 | \ |
| 345 | mutex_lock(&opts->lock); \ |
| 346 | result = sprintf(page, "%d\n", conv(cd->aname)); \ |
| 347 | mutex_unlock(&opts->lock); \ |
| 348 | \ |
| 349 | mutex_unlock(su_mutex); \ |
| 350 | \ |
| 351 | return result; \ |
| 352 | } \ |
| 353 | \ |
| 354 | static struct uvcg_default_camera_attribute \ |
| 355 | uvcg_default_camera_##cname = \ |
| 356 | __CONFIGFS_ATTR_RO(aname, uvcg_default_camera_##cname##_show) |
| 357 | |
| 358 | #define identity_conv(x) (x) |
| 359 | |
| 360 | UVCG_DEFAULT_CAMERA_ATTR(b_terminal_id, bTerminalID, identity_conv); |
| 361 | UVCG_DEFAULT_CAMERA_ATTR(w_terminal_type, wTerminalType, le16_to_cpu); |
| 362 | UVCG_DEFAULT_CAMERA_ATTR(b_assoc_terminal, bAssocTerminal, identity_conv); |
| 363 | UVCG_DEFAULT_CAMERA_ATTR(i_terminal, iTerminal, identity_conv); |
| 364 | UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_min, wObjectiveFocalLengthMin, |
| 365 | le16_to_cpu); |
| 366 | UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_max, wObjectiveFocalLengthMax, |
| 367 | le16_to_cpu); |
| 368 | UVCG_DEFAULT_CAMERA_ATTR(w_ocular_focal_length, wOcularFocalLength, |
| 369 | le16_to_cpu); |
| 370 | |
| 371 | #undef identity_conv |
| 372 | |
| 373 | #undef UVCG_DEFAULT_CAMERA_ATTR |
| 374 | |
| 375 | static ssize_t uvcg_default_camera_bm_controls_show( |
| 376 | struct uvcg_default_camera *dc, char *page) |
| 377 | { |
| 378 | struct f_uvc_opts *opts; |
| 379 | struct config_item *opts_item; |
| 380 | struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; |
| 381 | struct uvc_camera_terminal_descriptor *cd; |
| 382 | int result, i; |
| 383 | char *pg = page; |
| 384 | |
| 385 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 386 | |
| 387 | opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent-> |
| 388 | ci_parent; |
| 389 | opts = to_f_uvc_opts(opts_item); |
| 390 | cd = &opts->uvc_camera_terminal; |
| 391 | |
| 392 | mutex_lock(&opts->lock); |
| 393 | for (result = 0, i = 0; i < cd->bControlSize; ++i) { |
| 394 | result += sprintf(pg, "%d\n", cd->bmControls[i]); |
| 395 | pg = page + result; |
| 396 | } |
| 397 | mutex_unlock(&opts->lock); |
| 398 | |
| 399 | mutex_unlock(su_mutex); |
| 400 | return result; |
| 401 | } |
| 402 | |
| 403 | static struct uvcg_default_camera_attribute |
| 404 | uvcg_default_camera_bm_controls = |
| 405 | __CONFIGFS_ATTR_RO(bmControls, uvcg_default_camera_bm_controls_show); |
| 406 | |
| 407 | static struct configfs_attribute *uvcg_default_camera_attrs[] = { |
| 408 | &uvcg_default_camera_b_terminal_id.attr, |
| 409 | &uvcg_default_camera_w_terminal_type.attr, |
| 410 | &uvcg_default_camera_b_assoc_terminal.attr, |
| 411 | &uvcg_default_camera_i_terminal.attr, |
| 412 | &uvcg_default_camera_w_objective_focal_length_min.attr, |
| 413 | &uvcg_default_camera_w_objective_focal_length_max.attr, |
| 414 | &uvcg_default_camera_w_ocular_focal_length.attr, |
| 415 | &uvcg_default_camera_bm_controls.attr, |
| 416 | NULL, |
| 417 | }; |
| 418 | |
| 419 | static struct config_item_type uvcg_default_camera_type = { |
| 420 | .ct_item_ops = &uvcg_default_camera_item_ops, |
| 421 | .ct_attrs = uvcg_default_camera_attrs, |
| 422 | .ct_owner = THIS_MODULE, |
| 423 | }; |
| 424 | |
| 425 | /* struct uvcg_camera {}; */ |
| 426 | |
| 427 | static struct config_group *uvcg_camera_default_groups[] = { |
| 428 | &uvcg_default_camera.group, |
| 429 | NULL, |
| 430 | }; |
| 431 | |
| 432 | /* control/terminal/camera */ |
| 433 | static struct uvcg_camera_grp { |
| 434 | struct config_group group; |
| 435 | } uvcg_camera_grp; |
| 436 | |
| 437 | static struct config_item_type uvcg_camera_grp_type = { |
| 438 | .ct_owner = THIS_MODULE, |
| 439 | }; |
| 440 | |
| 441 | /* control/terminal/output/default */ |
| 442 | static struct uvcg_default_output { |
| 443 | struct config_group group; |
| 444 | } uvcg_default_output; |
| 445 | |
| 446 | static inline struct uvcg_default_output |
| 447 | *to_uvcg_default_output(struct config_item *item) |
| 448 | { |
| 449 | return container_of(to_config_group(item), |
| 450 | struct uvcg_default_output, group); |
| 451 | } |
| 452 | |
| 453 | CONFIGFS_ATTR_STRUCT(uvcg_default_output); |
| 454 | CONFIGFS_ATTR_OPS_RO(uvcg_default_output); |
| 455 | |
| 456 | static struct configfs_item_operations uvcg_default_output_item_ops = { |
| 457 | .show_attribute = uvcg_default_output_attr_show, |
| 458 | }; |
| 459 | |
| 460 | #define UVCG_DEFAULT_OUTPUT_ATTR(cname, aname, conv) \ |
| 461 | static ssize_t uvcg_default_output_##cname##_show( \ |
| 462 | struct uvcg_default_output *dout, char *page) \ |
| 463 | { \ |
| 464 | struct f_uvc_opts *opts; \ |
| 465 | struct config_item *opts_item; \ |
| 466 | struct mutex *su_mutex = &dout->group.cg_subsys->su_mutex; \ |
| 467 | struct uvc_output_terminal_descriptor *cd; \ |
| 468 | int result; \ |
| 469 | \ |
| 470 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 471 | \ |
| 472 | opts_item = dout->group.cg_item.ci_parent->ci_parent-> \ |
| 473 | ci_parent->ci_parent; \ |
| 474 | opts = to_f_uvc_opts(opts_item); \ |
| 475 | cd = &opts->uvc_output_terminal; \ |
| 476 | \ |
| 477 | mutex_lock(&opts->lock); \ |
| 478 | result = sprintf(page, "%d\n", conv(cd->aname)); \ |
| 479 | mutex_unlock(&opts->lock); \ |
| 480 | \ |
| 481 | mutex_unlock(su_mutex); \ |
| 482 | \ |
| 483 | return result; \ |
| 484 | } \ |
| 485 | \ |
| 486 | static struct uvcg_default_output_attribute \ |
| 487 | uvcg_default_output_##cname = \ |
| 488 | __CONFIGFS_ATTR_RO(aname, uvcg_default_output_##cname##_show) |
| 489 | |
| 490 | #define identity_conv(x) (x) |
| 491 | |
| 492 | UVCG_DEFAULT_OUTPUT_ATTR(b_terminal_id, bTerminalID, identity_conv); |
| 493 | UVCG_DEFAULT_OUTPUT_ATTR(w_terminal_type, wTerminalType, le16_to_cpu); |
| 494 | UVCG_DEFAULT_OUTPUT_ATTR(b_assoc_terminal, bAssocTerminal, identity_conv); |
| 495 | UVCG_DEFAULT_OUTPUT_ATTR(b_source_id, bSourceID, identity_conv); |
| 496 | UVCG_DEFAULT_OUTPUT_ATTR(i_terminal, iTerminal, identity_conv); |
| 497 | |
| 498 | #undef identity_conv |
| 499 | |
| 500 | #undef UVCG_DEFAULT_OUTPUT_ATTR |
| 501 | |
| 502 | static struct configfs_attribute *uvcg_default_output_attrs[] = { |
| 503 | &uvcg_default_output_b_terminal_id.attr, |
| 504 | &uvcg_default_output_w_terminal_type.attr, |
| 505 | &uvcg_default_output_b_assoc_terminal.attr, |
| 506 | &uvcg_default_output_b_source_id.attr, |
| 507 | &uvcg_default_output_i_terminal.attr, |
| 508 | NULL, |
| 509 | }; |
| 510 | |
| 511 | static struct config_item_type uvcg_default_output_type = { |
| 512 | .ct_item_ops = &uvcg_default_output_item_ops, |
| 513 | .ct_attrs = uvcg_default_output_attrs, |
| 514 | .ct_owner = THIS_MODULE, |
| 515 | }; |
| 516 | |
| 517 | /* struct uvcg_output {}; */ |
| 518 | |
| 519 | static struct config_group *uvcg_output_default_groups[] = { |
| 520 | &uvcg_default_output.group, |
| 521 | NULL, |
| 522 | }; |
| 523 | |
| 524 | /* control/terminal/output */ |
| 525 | static struct uvcg_output_grp { |
| 526 | struct config_group group; |
| 527 | } uvcg_output_grp; |
| 528 | |
| 529 | static struct config_item_type uvcg_output_grp_type = { |
| 530 | .ct_owner = THIS_MODULE, |
| 531 | }; |
| 532 | |
| 533 | static struct config_group *uvcg_terminal_default_groups[] = { |
| 534 | &uvcg_camera_grp.group, |
| 535 | &uvcg_output_grp.group, |
| 536 | NULL, |
| 537 | }; |
| 538 | |
| 539 | /* control/terminal */ |
| 540 | static struct uvcg_terminal_grp { |
| 541 | struct config_group group; |
| 542 | } uvcg_terminal_grp; |
| 543 | |
| 544 | static struct config_item_type uvcg_terminal_grp_type = { |
| 545 | .ct_owner = THIS_MODULE, |
| 546 | }; |
| 547 | |
| 548 | /* control/class/{fs} */ |
| 549 | static struct uvcg_control_class { |
| 550 | struct config_group group; |
| 551 | } uvcg_control_class_fs, uvcg_control_class_ss; |
| 552 | |
| 553 | |
| 554 | static inline struct uvc_descriptor_header |
| 555 | **uvcg_get_ctl_class_arr(struct config_item *i, struct f_uvc_opts *o) |
| 556 | { |
| 557 | struct uvcg_control_class *cl = container_of(to_config_group(i), |
| 558 | struct uvcg_control_class, group); |
| 559 | |
| 560 | if (cl == &uvcg_control_class_fs) |
| 561 | return o->uvc_fs_control_cls; |
| 562 | |
| 563 | if (cl == &uvcg_control_class_ss) |
| 564 | return o->uvc_ss_control_cls; |
| 565 | |
| 566 | return NULL; |
| 567 | } |
| 568 | |
| 569 | static int uvcg_control_class_allow_link(struct config_item *src, |
| 570 | struct config_item *target) |
| 571 | { |
| 572 | struct config_item *control, *header; |
| 573 | struct f_uvc_opts *opts; |
| 574 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; |
| 575 | struct uvc_descriptor_header **class_array; |
| 576 | struct uvcg_control_header *target_hdr; |
| 577 | int ret = -EINVAL; |
| 578 | |
| 579 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 580 | |
| 581 | control = src->ci_parent->ci_parent; |
| 582 | header = config_group_find_item(to_config_group(control), "header"); |
| 583 | if (!header || target->ci_parent != header) |
| 584 | goto out; |
| 585 | |
| 586 | opts = to_f_uvc_opts(control->ci_parent); |
| 587 | |
| 588 | mutex_lock(&opts->lock); |
| 589 | |
| 590 | class_array = uvcg_get_ctl_class_arr(src, opts); |
| 591 | if (!class_array) |
| 592 | goto unlock; |
| 593 | if (opts->refcnt || class_array[0]) { |
| 594 | ret = -EBUSY; |
| 595 | goto unlock; |
| 596 | } |
| 597 | |
| 598 | target_hdr = to_uvcg_control_header(target); |
| 599 | ++target_hdr->linked; |
| 600 | class_array[0] = (struct uvc_descriptor_header *)&target_hdr->desc; |
| 601 | ret = 0; |
| 602 | |
| 603 | unlock: |
| 604 | mutex_unlock(&opts->lock); |
| 605 | out: |
| 606 | mutex_unlock(su_mutex); |
| 607 | return ret; |
| 608 | } |
| 609 | |
| 610 | static int uvcg_control_class_drop_link(struct config_item *src, |
| 611 | struct config_item *target) |
| 612 | { |
| 613 | struct config_item *control, *header; |
| 614 | struct f_uvc_opts *opts; |
| 615 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; |
| 616 | struct uvc_descriptor_header **class_array; |
| 617 | struct uvcg_control_header *target_hdr; |
| 618 | int ret = -EINVAL; |
| 619 | |
| 620 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 621 | |
| 622 | control = src->ci_parent->ci_parent; |
| 623 | header = config_group_find_item(to_config_group(control), "header"); |
| 624 | if (!header || target->ci_parent != header) |
| 625 | goto out; |
| 626 | |
| 627 | opts = to_f_uvc_opts(control->ci_parent); |
| 628 | |
| 629 | mutex_lock(&opts->lock); |
| 630 | |
| 631 | class_array = uvcg_get_ctl_class_arr(src, opts); |
| 632 | if (!class_array) |
| 633 | goto unlock; |
| 634 | if (opts->refcnt) { |
| 635 | ret = -EBUSY; |
| 636 | goto unlock; |
| 637 | } |
| 638 | |
| 639 | target_hdr = to_uvcg_control_header(target); |
| 640 | --target_hdr->linked; |
| 641 | class_array[0] = NULL; |
| 642 | ret = 0; |
| 643 | |
| 644 | unlock: |
| 645 | mutex_unlock(&opts->lock); |
| 646 | out: |
| 647 | mutex_unlock(su_mutex); |
| 648 | return ret; |
| 649 | } |
| 650 | |
| 651 | static struct configfs_item_operations uvcg_control_class_item_ops = { |
| 652 | .allow_link = uvcg_control_class_allow_link, |
| 653 | .drop_link = uvcg_control_class_drop_link, |
| 654 | }; |
| 655 | |
| 656 | static struct config_item_type uvcg_control_class_type = { |
| 657 | .ct_item_ops = &uvcg_control_class_item_ops, |
| 658 | .ct_owner = THIS_MODULE, |
| 659 | }; |
| 660 | |
| 661 | static struct config_group *uvcg_control_class_default_groups[] = { |
| 662 | &uvcg_control_class_fs.group, |
| 663 | &uvcg_control_class_ss.group, |
| 664 | NULL, |
| 665 | }; |
| 666 | |
| 667 | /* control/class */ |
| 668 | static struct uvcg_control_class_grp { |
| 669 | struct config_group group; |
| 670 | } uvcg_control_class_grp; |
| 671 | |
| 672 | static struct config_item_type uvcg_control_class_grp_type = { |
| 673 | .ct_owner = THIS_MODULE, |
| 674 | }; |
| 675 | |
| 676 | static struct config_group *uvcg_control_default_groups[] = { |
| 677 | &uvcg_control_header_grp.group, |
| 678 | &uvcg_processing_grp.group, |
| 679 | &uvcg_terminal_grp.group, |
| 680 | &uvcg_control_class_grp.group, |
| 681 | NULL, |
| 682 | }; |
| 683 | |
| 684 | /* control */ |
| 685 | static struct uvcg_control_grp { |
| 686 | struct config_group group; |
| 687 | } uvcg_control_grp; |
| 688 | |
| 689 | static struct config_item_type uvcg_control_grp_type = { |
| 690 | .ct_owner = THIS_MODULE, |
| 691 | }; |
| 692 | |
| 693 | /* streaming/uncompressed */ |
| 694 | static struct uvcg_uncompressed_grp { |
| 695 | struct config_group group; |
| 696 | } uvcg_uncompressed_grp; |
| 697 | |
| 698 | /* streaming/mjpeg */ |
| 699 | static struct uvcg_mjpeg_grp { |
| 700 | struct config_group group; |
| 701 | } uvcg_mjpeg_grp; |
| 702 | |
| 703 | static struct config_item *fmt_parent[] = { |
| 704 | &uvcg_uncompressed_grp.group.cg_item, |
| 705 | &uvcg_mjpeg_grp.group.cg_item, |
| 706 | }; |
| 707 | |
| 708 | enum uvcg_format_type { |
| 709 | UVCG_UNCOMPRESSED = 0, |
| 710 | UVCG_MJPEG, |
| 711 | }; |
| 712 | |
| 713 | struct uvcg_format { |
| 714 | struct config_group group; |
| 715 | enum uvcg_format_type type; |
| 716 | unsigned linked; |
| 717 | unsigned num_frames; |
| 718 | __u8 bmaControls[UVCG_STREAMING_CONTROL_SIZE]; |
| 719 | }; |
| 720 | |
| 721 | struct uvcg_format *to_uvcg_format(struct config_item *item) |
| 722 | { |
| 723 | return container_of(to_config_group(item), struct uvcg_format, group); |
| 724 | } |
| 725 | |
| 726 | static ssize_t uvcg_format_bma_controls_show(struct uvcg_format *f, char *page) |
| 727 | { |
| 728 | struct f_uvc_opts *opts; |
| 729 | struct config_item *opts_item; |
| 730 | struct mutex *su_mutex = &f->group.cg_subsys->su_mutex; |
| 731 | int result, i; |
| 732 | char *pg = page; |
| 733 | |
| 734 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 735 | |
| 736 | opts_item = f->group.cg_item.ci_parent->ci_parent->ci_parent; |
| 737 | opts = to_f_uvc_opts(opts_item); |
| 738 | |
| 739 | mutex_lock(&opts->lock); |
| 740 | result = sprintf(pg, "0x"); |
| 741 | pg += result; |
| 742 | for (i = 0; i < UVCG_STREAMING_CONTROL_SIZE; ++i) { |
| 743 | result += sprintf(pg, "%x\n", f->bmaControls[i]); |
| 744 | pg = page + result; |
| 745 | } |
| 746 | mutex_unlock(&opts->lock); |
| 747 | |
| 748 | mutex_unlock(su_mutex); |
| 749 | return result; |
| 750 | } |
| 751 | |
| 752 | static ssize_t uvcg_format_bma_controls_store(struct uvcg_format *ch, |
| 753 | const char *page, size_t len) |
| 754 | { |
| 755 | struct f_uvc_opts *opts; |
| 756 | struct config_item *opts_item; |
| 757 | struct mutex *su_mutex = &ch->group.cg_subsys->su_mutex; |
| 758 | int ret = -EINVAL; |
| 759 | |
| 760 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 761 | |
| 762 | opts_item = ch->group.cg_item.ci_parent->ci_parent->ci_parent; |
| 763 | opts = to_f_uvc_opts(opts_item); |
| 764 | |
| 765 | mutex_lock(&opts->lock); |
| 766 | if (ch->linked || opts->refcnt) { |
| 767 | ret = -EBUSY; |
| 768 | goto end; |
| 769 | } |
| 770 | |
| 771 | if (len < 4 || *page != '0' || |
| 772 | (*(page + 1) != 'x' && *(page + 1) != 'X')) |
| 773 | goto end; |
| 774 | ret = hex2bin(ch->bmaControls, page + 2, 1); |
| 775 | if (ret < 0) |
| 776 | goto end; |
| 777 | ret = len; |
| 778 | end: |
| 779 | mutex_unlock(&opts->lock); |
| 780 | mutex_unlock(su_mutex); |
| 781 | return ret; |
| 782 | } |
| 783 | |
| 784 | struct uvcg_format_ptr { |
| 785 | struct uvcg_format *fmt; |
| 786 | struct list_head entry; |
| 787 | }; |
| 788 | |
| 789 | /* streaming/header/<NAME> */ |
| 790 | struct uvcg_streaming_header { |
| 791 | struct config_item item; |
| 792 | struct uvc_input_header_descriptor desc; |
| 793 | unsigned linked; |
| 794 | struct list_head formats; |
| 795 | unsigned num_fmt; |
| 796 | }; |
| 797 | |
| 798 | struct uvcg_streaming_header *to_uvcg_streaming_header(struct config_item *item) |
| 799 | { |
| 800 | return container_of(item, struct uvcg_streaming_header, item); |
| 801 | } |
| 802 | |
| 803 | CONFIGFS_ATTR_STRUCT(uvcg_streaming_header); |
| 804 | CONFIGFS_ATTR_OPS(uvcg_streaming_header); |
| 805 | |
| 806 | static int uvcg_streaming_header_allow_link(struct config_item *src, |
| 807 | struct config_item *target) |
| 808 | { |
| 809 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; |
| 810 | struct config_item *opts_item; |
| 811 | struct f_uvc_opts *opts; |
| 812 | struct uvcg_streaming_header *src_hdr; |
| 813 | struct uvcg_format *target_fmt = NULL; |
| 814 | struct uvcg_format_ptr *format_ptr; |
| 815 | int i, ret = -EINVAL; |
| 816 | |
| 817 | src_hdr = to_uvcg_streaming_header(src); |
| 818 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 819 | |
| 820 | opts_item = src->ci_parent->ci_parent->ci_parent; |
| 821 | opts = to_f_uvc_opts(opts_item); |
| 822 | |
| 823 | mutex_lock(&opts->lock); |
| 824 | |
| 825 | if (src_hdr->linked) { |
| 826 | ret = -EBUSY; |
| 827 | goto out; |
| 828 | } |
| 829 | |
| 830 | for (i = 0; i < ARRAY_SIZE(fmt_parent); ++i) |
| 831 | if (target->ci_parent == fmt_parent[i]) |
| 832 | break; |
| 833 | if (i == ARRAY_SIZE(fmt_parent)) |
| 834 | goto out; |
| 835 | |
| 836 | target_fmt = container_of(to_config_group(target), struct uvcg_format, |
| 837 | group); |
| 838 | if (!target_fmt) |
| 839 | goto out; |
| 840 | |
| 841 | format_ptr = kzalloc(sizeof(*format_ptr), GFP_KERNEL); |
| 842 | if (!format_ptr) { |
| 843 | ret = PTR_ERR(format_ptr); |
| 844 | goto out; |
| 845 | } |
| 846 | ret = 0; |
| 847 | format_ptr->fmt = target_fmt; |
| 848 | list_add_tail(&format_ptr->entry, &src_hdr->formats); |
| 849 | ++src_hdr->num_fmt; |
| 850 | |
| 851 | out: |
| 852 | mutex_unlock(&opts->lock); |
| 853 | mutex_unlock(su_mutex); |
| 854 | return ret; |
| 855 | } |
| 856 | |
| 857 | static int uvcg_streaming_header_drop_link(struct config_item *src, |
| 858 | struct config_item *target) |
| 859 | { |
| 860 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; |
| 861 | struct config_item *opts_item; |
| 862 | struct f_uvc_opts *opts; |
| 863 | struct uvcg_streaming_header *src_hdr; |
| 864 | struct uvcg_format *target_fmt = NULL; |
| 865 | struct uvcg_format_ptr *format_ptr, *tmp; |
| 866 | int ret = -EINVAL; |
| 867 | |
| 868 | src_hdr = to_uvcg_streaming_header(src); |
| 869 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 870 | |
| 871 | opts_item = src->ci_parent->ci_parent->ci_parent; |
| 872 | opts = to_f_uvc_opts(opts_item); |
| 873 | |
| 874 | mutex_lock(&opts->lock); |
| 875 | target_fmt = container_of(to_config_group(target), struct uvcg_format, |
| 876 | group); |
| 877 | if (!target_fmt) |
| 878 | goto out; |
| 879 | |
| 880 | list_for_each_entry_safe(format_ptr, tmp, &src_hdr->formats, entry) |
| 881 | if (format_ptr->fmt == target_fmt) { |
| 882 | list_del(&format_ptr->entry); |
| 883 | kfree(format_ptr); |
| 884 | --src_hdr->num_fmt; |
| 885 | break; |
| 886 | } |
| 887 | |
| 888 | out: |
| 889 | mutex_unlock(&opts->lock); |
| 890 | mutex_unlock(su_mutex); |
| 891 | return ret; |
| 892 | |
| 893 | } |
| 894 | |
| 895 | static struct configfs_item_operations uvcg_streaming_header_item_ops = { |
| 896 | .show_attribute = uvcg_streaming_header_attr_show, |
| 897 | .store_attribute = uvcg_streaming_header_attr_store, |
| 898 | .allow_link = uvcg_streaming_header_allow_link, |
| 899 | .drop_link = uvcg_streaming_header_drop_link, |
| 900 | }; |
| 901 | |
| 902 | #define UVCG_STREAMING_HEADER_ATTR(cname, aname, conv) \ |
| 903 | static ssize_t uvcg_streaming_header_##cname##_show( \ |
| 904 | struct uvcg_streaming_header *sh, char *page) \ |
| 905 | { \ |
| 906 | struct f_uvc_opts *opts; \ |
| 907 | struct config_item *opts_item; \ |
| 908 | struct mutex *su_mutex = &sh->item.ci_group->cg_subsys->su_mutex;\ |
| 909 | int result; \ |
| 910 | \ |
| 911 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 912 | \ |
| 913 | opts_item = sh->item.ci_parent->ci_parent->ci_parent; \ |
| 914 | opts = to_f_uvc_opts(opts_item); \ |
| 915 | \ |
| 916 | mutex_lock(&opts->lock); \ |
| 917 | result = sprintf(page, "%d\n", conv(sh->desc.aname)); \ |
| 918 | mutex_unlock(&opts->lock); \ |
| 919 | \ |
| 920 | mutex_unlock(su_mutex); \ |
| 921 | return result; \ |
| 922 | } \ |
| 923 | \ |
| 924 | static struct uvcg_streaming_header_attribute \ |
| 925 | uvcg_streaming_header_##cname = \ |
| 926 | __CONFIGFS_ATTR_RO(aname, uvcg_streaming_header_##cname##_show) |
| 927 | |
| 928 | #define identity_conv(x) (x) |
| 929 | |
| 930 | UVCG_STREAMING_HEADER_ATTR(bm_info, bmInfo, identity_conv); |
| 931 | UVCG_STREAMING_HEADER_ATTR(b_terminal_link, bTerminalLink, identity_conv); |
| 932 | UVCG_STREAMING_HEADER_ATTR(b_still_capture_method, bStillCaptureMethod, |
| 933 | identity_conv); |
| 934 | UVCG_STREAMING_HEADER_ATTR(b_trigger_support, bTriggerSupport, identity_conv); |
| 935 | UVCG_STREAMING_HEADER_ATTR(b_trigger_usage, bTriggerUsage, identity_conv); |
| 936 | |
| 937 | #undef identity_conv |
| 938 | |
| 939 | #undef UVCG_STREAMING_HEADER_ATTR |
| 940 | |
| 941 | static struct configfs_attribute *uvcg_streaming_header_attrs[] = { |
| 942 | &uvcg_streaming_header_bm_info.attr, |
| 943 | &uvcg_streaming_header_b_terminal_link.attr, |
| 944 | &uvcg_streaming_header_b_still_capture_method.attr, |
| 945 | &uvcg_streaming_header_b_trigger_support.attr, |
| 946 | &uvcg_streaming_header_b_trigger_usage.attr, |
| 947 | NULL, |
| 948 | }; |
| 949 | |
| 950 | struct config_item_type uvcg_streaming_header_type = { |
| 951 | .ct_item_ops = &uvcg_streaming_header_item_ops, |
| 952 | .ct_attrs = uvcg_streaming_header_attrs, |
| 953 | .ct_owner = THIS_MODULE, |
| 954 | }; |
| 955 | |
| 956 | static struct config_item |
| 957 | *uvcg_streaming_header_make(struct config_group *group, const char *name) |
| 958 | { |
| 959 | struct uvcg_streaming_header *h; |
| 960 | |
| 961 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
| 962 | if (!h) |
| 963 | return ERR_CAST(h); |
| 964 | |
| 965 | INIT_LIST_HEAD(&h->formats); |
| 966 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; |
| 967 | h->desc.bDescriptorSubType = UVC_VS_INPUT_HEADER; |
| 968 | h->desc.bTerminalLink = 3; |
| 969 | h->desc.bControlSize = UVCG_STREAMING_CONTROL_SIZE; |
| 970 | |
| 971 | config_item_init_type_name(&h->item, name, &uvcg_streaming_header_type); |
| 972 | |
| 973 | return &h->item; |
| 974 | } |
| 975 | |
| 976 | void uvcg_streaming_header_drop(struct config_group *group, |
| 977 | struct config_item *item) |
| 978 | { |
| 979 | struct uvcg_streaming_header *h = to_uvcg_streaming_header(item); |
| 980 | |
| 981 | kfree(h); |
| 982 | } |
| 983 | |
| 984 | /* streaming/header */ |
| 985 | static struct uvcg_streaming_header_grp { |
| 986 | struct config_group group; |
| 987 | } uvcg_streaming_header_grp; |
| 988 | |
| 989 | static struct configfs_group_operations uvcg_streaming_header_grp_ops = { |
| 990 | .make_item = uvcg_streaming_header_make, |
| 991 | .drop_item = uvcg_streaming_header_drop, |
| 992 | }; |
| 993 | |
| 994 | static struct config_item_type uvcg_streaming_header_grp_type = { |
| 995 | .ct_group_ops = &uvcg_streaming_header_grp_ops, |
| 996 | .ct_owner = THIS_MODULE, |
| 997 | }; |
| 998 | |
| 999 | /* streaming/<mode>/<format>/<NAME> */ |
| 1000 | struct uvcg_frame { |
| 1001 | struct { |
| 1002 | u8 b_length; |
| 1003 | u8 b_descriptor_type; |
| 1004 | u8 b_descriptor_subtype; |
| 1005 | u8 b_frame_index; |
| 1006 | u8 bm_capabilities; |
| 1007 | u16 w_width; |
| 1008 | u16 w_height; |
| 1009 | u32 dw_min_bit_rate; |
| 1010 | u32 dw_max_bit_rate; |
| 1011 | u32 dw_max_video_frame_buffer_size; |
| 1012 | u32 dw_default_frame_interval; |
| 1013 | u8 b_frame_interval_type; |
| 1014 | } __attribute__((packed)) frame; |
| 1015 | u32 *dw_frame_interval; |
| 1016 | enum uvcg_format_type fmt_type; |
| 1017 | struct config_item item; |
| 1018 | }; |
| 1019 | |
| 1020 | struct uvcg_frame *to_uvcg_frame(struct config_item *item) |
| 1021 | { |
| 1022 | return container_of(item, struct uvcg_frame, item); |
| 1023 | } |
| 1024 | |
| 1025 | CONFIGFS_ATTR_STRUCT(uvcg_frame); |
| 1026 | CONFIGFS_ATTR_OPS(uvcg_frame); |
| 1027 | |
| 1028 | static struct configfs_item_operations uvcg_frame_item_ops = { |
| 1029 | .show_attribute = uvcg_frame_attr_show, |
| 1030 | .store_attribute = uvcg_frame_attr_store, |
| 1031 | }; |
| 1032 | |
| 1033 | #define UVCG_FRAME_ATTR(cname, aname, conv, str2u, uxx, vnoc, limit) \ |
| 1034 | static ssize_t uvcg_frame_##cname##_show(struct uvcg_frame *f, char *page)\ |
| 1035 | { \ |
| 1036 | struct f_uvc_opts *opts; \ |
| 1037 | struct config_item *opts_item; \ |
| 1038 | struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\ |
| 1039 | int result; \ |
| 1040 | \ |
| 1041 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 1042 | \ |
| 1043 | opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \ |
| 1044 | opts = to_f_uvc_opts(opts_item); \ |
| 1045 | \ |
| 1046 | mutex_lock(&opts->lock); \ |
| 1047 | result = sprintf(page, "%d\n", conv(f->frame.cname)); \ |
| 1048 | mutex_unlock(&opts->lock); \ |
| 1049 | \ |
| 1050 | mutex_unlock(su_mutex); \ |
| 1051 | return result; \ |
| 1052 | } \ |
| 1053 | \ |
| 1054 | static ssize_t uvcg_frame_##cname##_store(struct uvcg_frame *f, \ |
| 1055 | const char *page, size_t len)\ |
| 1056 | { \ |
| 1057 | struct f_uvc_opts *opts; \ |
| 1058 | struct config_item *opts_item; \ |
| 1059 | struct uvcg_format *fmt; \ |
| 1060 | struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\ |
| 1061 | int ret; \ |
| 1062 | uxx num; \ |
| 1063 | \ |
| 1064 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 1065 | \ |
| 1066 | opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \ |
| 1067 | opts = to_f_uvc_opts(opts_item); \ |
| 1068 | fmt = to_uvcg_format(f->item.ci_parent); \ |
| 1069 | \ |
| 1070 | mutex_lock(&opts->lock); \ |
| 1071 | if (fmt->linked || opts->refcnt) { \ |
| 1072 | ret = -EBUSY; \ |
| 1073 | goto end; \ |
| 1074 | } \ |
| 1075 | \ |
| 1076 | ret = str2u(page, 0, &num); \ |
| 1077 | if (ret) \ |
| 1078 | goto end; \ |
| 1079 | \ |
| 1080 | if (num > limit) { \ |
| 1081 | ret = -EINVAL; \ |
| 1082 | goto end; \ |
| 1083 | } \ |
| 1084 | f->frame.cname = vnoc(num); \ |
| 1085 | ret = len; \ |
| 1086 | end: \ |
| 1087 | mutex_unlock(&opts->lock); \ |
| 1088 | mutex_unlock(su_mutex); \ |
| 1089 | return ret; \ |
| 1090 | } \ |
| 1091 | \ |
| 1092 | static struct uvcg_frame_attribute \ |
| 1093 | uvcg_frame_##cname = \ |
| 1094 | __CONFIGFS_ATTR(aname, S_IRUGO | S_IWUSR, \ |
| 1095 | uvcg_frame_##cname##_show, \ |
| 1096 | uvcg_frame_##cname##_store) |
| 1097 | |
| 1098 | #define identity_conv(x) (x) |
| 1099 | |
| 1100 | UVCG_FRAME_ATTR(bm_capabilities, bmCapabilities, identity_conv, kstrtou8, u8, |
| 1101 | identity_conv, 0xFF); |
| 1102 | UVCG_FRAME_ATTR(w_width, wWidth, le16_to_cpu, kstrtou16, u16, cpu_to_le16, |
| 1103 | 0xFFFF); |
| 1104 | UVCG_FRAME_ATTR(w_height, wHeight, le16_to_cpu, kstrtou16, u16, cpu_to_le16, |
| 1105 | 0xFFFF); |
| 1106 | UVCG_FRAME_ATTR(dw_min_bit_rate, dwMinBitRate, le32_to_cpu, kstrtou32, u32, |
| 1107 | cpu_to_le32, 0xFFFFFFFF); |
| 1108 | UVCG_FRAME_ATTR(dw_max_bit_rate, dwMaxBitRate, le32_to_cpu, kstrtou32, u32, |
| 1109 | cpu_to_le32, 0xFFFFFFFF); |
| 1110 | UVCG_FRAME_ATTR(dw_max_video_frame_buffer_size, dwMaxVideoFrameBufferSize, |
| 1111 | le32_to_cpu, kstrtou32, u32, cpu_to_le32, 0xFFFFFFFF); |
| 1112 | UVCG_FRAME_ATTR(dw_default_frame_interval, dwDefaultFrameInterval, |
| 1113 | le32_to_cpu, kstrtou32, u32, cpu_to_le32, 0xFFFFFFFF); |
| 1114 | |
| 1115 | #undef identity_conv |
| 1116 | |
| 1117 | #undef UVCG_FRAME_ATTR |
| 1118 | |
| 1119 | static ssize_t uvcg_frame_dw_frame_interval_show(struct uvcg_frame *frm, |
| 1120 | char *page) |
| 1121 | { |
| 1122 | struct f_uvc_opts *opts; |
| 1123 | struct config_item *opts_item; |
| 1124 | struct mutex *su_mutex = &frm->item.ci_group->cg_subsys->su_mutex; |
| 1125 | int result, i; |
| 1126 | char *pg = page; |
| 1127 | |
| 1128 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 1129 | |
| 1130 | opts_item = frm->item.ci_parent->ci_parent->ci_parent->ci_parent; |
| 1131 | opts = to_f_uvc_opts(opts_item); |
| 1132 | |
| 1133 | mutex_lock(&opts->lock); |
| 1134 | for (result = 0, i = 0; i < frm->frame.b_frame_interval_type; ++i) { |
| 1135 | result += sprintf(pg, "%d\n", |
| 1136 | le32_to_cpu(frm->dw_frame_interval[i])); |
| 1137 | pg = page + result; |
| 1138 | } |
| 1139 | mutex_unlock(&opts->lock); |
| 1140 | |
| 1141 | mutex_unlock(su_mutex); |
| 1142 | return result; |
| 1143 | } |
| 1144 | |
| 1145 | static inline int __uvcg_count_frm_intrv(char *buf, void *priv) |
| 1146 | { |
| 1147 | ++*((int *)priv); |
| 1148 | return 0; |
| 1149 | } |
| 1150 | |
| 1151 | static inline int __uvcg_fill_frm_intrv(char *buf, void *priv) |
| 1152 | { |
| 1153 | u32 num, **interv; |
| 1154 | int ret; |
| 1155 | |
| 1156 | ret = kstrtou32(buf, 0, &num); |
| 1157 | if (ret) |
| 1158 | return ret; |
| 1159 | if (num > 0xFFFFFFFF) |
| 1160 | return -EINVAL; |
| 1161 | |
| 1162 | interv = priv; |
| 1163 | **interv = cpu_to_le32(num); |
| 1164 | ++*interv; |
| 1165 | |
| 1166 | return 0; |
| 1167 | } |
| 1168 | |
| 1169 | static int __uvcg_iter_frm_intrv(const char *page, size_t len, |
| 1170 | int (*fun)(char *, void *), void *priv) |
| 1171 | { |
| 1172 | /* sign, base 2 representation, newline, terminator */ |
| 1173 | char buf[1 + sizeof(u32) * 8 + 1 + 1]; |
| 1174 | const char *pg = page; |
| 1175 | int i, ret; |
| 1176 | |
| 1177 | if (!fun) |
| 1178 | return -EINVAL; |
| 1179 | |
| 1180 | while (pg - page < len) { |
| 1181 | i = 0; |
| 1182 | while (i < sizeof(buf) && (pg - page < len) && |
| 1183 | *pg != '\0' && *pg != '\n') |
| 1184 | buf[i++] = *pg++; |
| 1185 | if (i == sizeof(buf)) |
| 1186 | return -EINVAL; |
| 1187 | while ((pg - page < len) && (*pg == '\0' || *pg == '\n')) |
| 1188 | ++pg; |
| 1189 | buf[i] = '\0'; |
| 1190 | ret = fun(buf, priv); |
| 1191 | if (ret) |
| 1192 | return ret; |
| 1193 | } |
| 1194 | |
| 1195 | return 0; |
| 1196 | } |
| 1197 | |
| 1198 | static ssize_t uvcg_frame_dw_frame_interval_store(struct uvcg_frame *ch, |
| 1199 | const char *page, size_t len) |
| 1200 | { |
| 1201 | struct f_uvc_opts *opts; |
| 1202 | struct config_item *opts_item; |
| 1203 | struct uvcg_format *fmt; |
| 1204 | struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex; |
| 1205 | int ret = 0, n = 0; |
| 1206 | u32 *frm_intrv, *tmp; |
| 1207 | |
| 1208 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 1209 | |
| 1210 | opts_item = ch->item.ci_parent->ci_parent->ci_parent->ci_parent; |
| 1211 | opts = to_f_uvc_opts(opts_item); |
| 1212 | fmt = to_uvcg_format(ch->item.ci_parent); |
| 1213 | |
| 1214 | mutex_lock(&opts->lock); |
| 1215 | if (fmt->linked || opts->refcnt) { |
| 1216 | ret = -EBUSY; |
| 1217 | goto end; |
| 1218 | } |
| 1219 | |
| 1220 | ret = __uvcg_iter_frm_intrv(page, len, __uvcg_count_frm_intrv, &n); |
| 1221 | if (ret) |
| 1222 | goto end; |
| 1223 | |
| 1224 | tmp = frm_intrv = kcalloc(n, sizeof(u32), GFP_KERNEL); |
| 1225 | if (!frm_intrv) { |
| 1226 | ret = -ENOMEM; |
| 1227 | goto end; |
| 1228 | } |
| 1229 | |
| 1230 | ret = __uvcg_iter_frm_intrv(page, len, __uvcg_fill_frm_intrv, &tmp); |
| 1231 | if (ret) { |
| 1232 | kfree(frm_intrv); |
| 1233 | goto end; |
| 1234 | } |
| 1235 | |
| 1236 | kfree(ch->dw_frame_interval); |
| 1237 | ch->dw_frame_interval = frm_intrv; |
| 1238 | ch->frame.b_frame_interval_type = n; |
| 1239 | ret = len; |
| 1240 | |
| 1241 | end: |
| 1242 | mutex_unlock(&opts->lock); |
| 1243 | mutex_unlock(su_mutex); |
| 1244 | return ret; |
| 1245 | } |
| 1246 | |
| 1247 | static struct uvcg_frame_attribute |
| 1248 | uvcg_frame_dw_frame_interval = |
| 1249 | __CONFIGFS_ATTR(dwFrameInterval, S_IRUGO | S_IWUSR, |
| 1250 | uvcg_frame_dw_frame_interval_show, |
| 1251 | uvcg_frame_dw_frame_interval_store); |
| 1252 | |
| 1253 | static struct configfs_attribute *uvcg_frame_attrs[] = { |
| 1254 | &uvcg_frame_bm_capabilities.attr, |
| 1255 | &uvcg_frame_w_width.attr, |
| 1256 | &uvcg_frame_w_height.attr, |
| 1257 | &uvcg_frame_dw_min_bit_rate.attr, |
| 1258 | &uvcg_frame_dw_max_bit_rate.attr, |
| 1259 | &uvcg_frame_dw_max_video_frame_buffer_size.attr, |
| 1260 | &uvcg_frame_dw_default_frame_interval.attr, |
| 1261 | &uvcg_frame_dw_frame_interval.attr, |
| 1262 | NULL, |
| 1263 | }; |
| 1264 | |
| 1265 | struct config_item_type uvcg_frame_type = { |
| 1266 | .ct_item_ops = &uvcg_frame_item_ops, |
| 1267 | .ct_attrs = uvcg_frame_attrs, |
| 1268 | .ct_owner = THIS_MODULE, |
| 1269 | }; |
| 1270 | |
| 1271 | static struct config_item *uvcg_frame_make(struct config_group *group, |
| 1272 | const char *name) |
| 1273 | { |
| 1274 | struct uvcg_frame *h; |
| 1275 | struct uvcg_format *fmt; |
| 1276 | struct f_uvc_opts *opts; |
| 1277 | struct config_item *opts_item; |
| 1278 | |
| 1279 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
| 1280 | if (!h) |
| 1281 | return ERR_CAST(h); |
| 1282 | |
| 1283 | h->frame.b_descriptor_type = USB_DT_CS_INTERFACE; |
| 1284 | h->frame.b_frame_index = 1; |
| 1285 | h->frame.w_width = cpu_to_le16(640); |
| 1286 | h->frame.w_height = cpu_to_le16(360); |
| 1287 | h->frame.dw_min_bit_rate = cpu_to_le32(18432000); |
| 1288 | h->frame.dw_max_bit_rate = cpu_to_le32(55296000); |
| 1289 | h->frame.dw_max_video_frame_buffer_size = cpu_to_le32(460800); |
| 1290 | h->frame.dw_default_frame_interval = cpu_to_le32(666666); |
| 1291 | |
| 1292 | opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; |
| 1293 | opts = to_f_uvc_opts(opts_item); |
| 1294 | |
| 1295 | mutex_lock(&opts->lock); |
| 1296 | fmt = to_uvcg_format(&group->cg_item); |
| 1297 | if (fmt->type == UVCG_UNCOMPRESSED) { |
| 1298 | h->frame.b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED; |
| 1299 | h->fmt_type = UVCG_UNCOMPRESSED; |
| 1300 | } else if (fmt->type == UVCG_MJPEG) { |
| 1301 | h->frame.b_descriptor_subtype = UVC_VS_FRAME_MJPEG; |
| 1302 | h->fmt_type = UVCG_MJPEG; |
| 1303 | } else { |
| 1304 | mutex_unlock(&opts->lock); |
| 1305 | return ERR_PTR(-EINVAL); |
| 1306 | } |
| 1307 | ++fmt->num_frames; |
| 1308 | mutex_unlock(&opts->lock); |
| 1309 | |
| 1310 | config_item_init_type_name(&h->item, name, &uvcg_frame_type); |
| 1311 | |
| 1312 | return &h->item; |
| 1313 | } |
| 1314 | |
| 1315 | void uvcg_frame_drop(struct config_group *group, struct config_item *item) |
| 1316 | { |
| 1317 | struct uvcg_frame *h = to_uvcg_frame(item); |
| 1318 | struct uvcg_format *fmt; |
| 1319 | struct f_uvc_opts *opts; |
| 1320 | struct config_item *opts_item; |
| 1321 | |
| 1322 | opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; |
| 1323 | opts = to_f_uvc_opts(opts_item); |
| 1324 | |
| 1325 | mutex_lock(&opts->lock); |
| 1326 | fmt = to_uvcg_format(&group->cg_item); |
| 1327 | --fmt->num_frames; |
| 1328 | kfree(h); |
| 1329 | mutex_unlock(&opts->lock); |
| 1330 | } |
| 1331 | |
| 1332 | /* streaming/uncompressed/<NAME> */ |
| 1333 | struct uvcg_uncompressed { |
| 1334 | struct uvcg_format fmt; |
| 1335 | struct uvc_format_uncompressed desc; |
| 1336 | }; |
| 1337 | |
| 1338 | struct uvcg_uncompressed *to_uvcg_uncompressed(struct config_item *item) |
| 1339 | { |
| 1340 | return container_of( |
| 1341 | container_of(to_config_group(item), struct uvcg_format, group), |
| 1342 | struct uvcg_uncompressed, fmt); |
| 1343 | } |
| 1344 | |
| 1345 | CONFIGFS_ATTR_STRUCT(uvcg_uncompressed); |
| 1346 | CONFIGFS_ATTR_OPS(uvcg_uncompressed); |
| 1347 | |
| 1348 | static struct configfs_item_operations uvcg_uncompressed_item_ops = { |
| 1349 | .show_attribute = uvcg_uncompressed_attr_show, |
| 1350 | .store_attribute = uvcg_uncompressed_attr_store, |
| 1351 | }; |
| 1352 | |
| 1353 | static struct configfs_group_operations uvcg_uncompressed_group_ops = { |
| 1354 | .make_item = uvcg_frame_make, |
| 1355 | .drop_item = uvcg_frame_drop, |
| 1356 | }; |
| 1357 | |
| 1358 | static ssize_t uvcg_uncompressed_guid_format_show(struct uvcg_uncompressed *ch, |
| 1359 | char *page) |
| 1360 | { |
| 1361 | struct f_uvc_opts *opts; |
| 1362 | struct config_item *opts_item; |
| 1363 | struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; |
| 1364 | |
| 1365 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 1366 | |
| 1367 | opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; |
| 1368 | opts = to_f_uvc_opts(opts_item); |
| 1369 | |
| 1370 | mutex_lock(&opts->lock); |
| 1371 | memcpy(page, ch->desc.guidFormat, sizeof(ch->desc.guidFormat)); |
| 1372 | mutex_unlock(&opts->lock); |
| 1373 | |
| 1374 | mutex_unlock(su_mutex); |
| 1375 | |
| 1376 | return sizeof(ch->desc.guidFormat); |
| 1377 | } |
| 1378 | |
| 1379 | static ssize_t uvcg_uncompressed_guid_format_store(struct uvcg_uncompressed *ch, |
| 1380 | const char *page, size_t len) |
| 1381 | { |
| 1382 | struct f_uvc_opts *opts; |
| 1383 | struct config_item *opts_item; |
| 1384 | struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; |
| 1385 | int ret; |
| 1386 | |
| 1387 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 1388 | |
| 1389 | opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; |
| 1390 | opts = to_f_uvc_opts(opts_item); |
| 1391 | |
| 1392 | mutex_lock(&opts->lock); |
| 1393 | if (ch->fmt.linked || opts->refcnt) { |
| 1394 | ret = -EBUSY; |
| 1395 | goto end; |
| 1396 | } |
| 1397 | |
| 1398 | memcpy(ch->desc.guidFormat, page, |
| 1399 | min(sizeof(ch->desc.guidFormat), len)); |
| 1400 | ret = sizeof(ch->desc.guidFormat); |
| 1401 | |
| 1402 | end: |
| 1403 | mutex_unlock(&opts->lock); |
| 1404 | mutex_unlock(su_mutex); |
| 1405 | return ret; |
| 1406 | } |
| 1407 | |
| 1408 | static struct uvcg_uncompressed_attribute uvcg_uncompressed_guid_format = |
| 1409 | __CONFIGFS_ATTR(guidFormat, S_IRUGO | S_IWUSR, |
| 1410 | uvcg_uncompressed_guid_format_show, |
| 1411 | uvcg_uncompressed_guid_format_store); |
| 1412 | |
| 1413 | |
| 1414 | #define UVCG_UNCOMPRESSED_ATTR_RO(cname, aname, conv) \ |
| 1415 | static ssize_t uvcg_uncompressed_##cname##_show( \ |
| 1416 | struct uvcg_uncompressed *u, char *page) \ |
| 1417 | { \ |
| 1418 | struct f_uvc_opts *opts; \ |
| 1419 | struct config_item *opts_item; \ |
| 1420 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ |
| 1421 | int result; \ |
| 1422 | \ |
| 1423 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 1424 | \ |
| 1425 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ |
| 1426 | opts = to_f_uvc_opts(opts_item); \ |
| 1427 | \ |
| 1428 | mutex_lock(&opts->lock); \ |
| 1429 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ |
| 1430 | mutex_unlock(&opts->lock); \ |
| 1431 | \ |
| 1432 | mutex_unlock(su_mutex); \ |
| 1433 | return result; \ |
| 1434 | } \ |
| 1435 | \ |
| 1436 | static struct uvcg_uncompressed_attribute \ |
| 1437 | uvcg_uncompressed_##cname = \ |
| 1438 | __CONFIGFS_ATTR_RO(aname, uvcg_uncompressed_##cname##_show) |
| 1439 | |
| 1440 | #define UVCG_UNCOMPRESSED_ATTR(cname, aname, conv) \ |
| 1441 | static ssize_t uvcg_uncompressed_##cname##_show( \ |
| 1442 | struct uvcg_uncompressed *u, char *page) \ |
| 1443 | { \ |
| 1444 | struct f_uvc_opts *opts; \ |
| 1445 | struct config_item *opts_item; \ |
| 1446 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ |
| 1447 | int result; \ |
| 1448 | \ |
| 1449 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 1450 | \ |
| 1451 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ |
| 1452 | opts = to_f_uvc_opts(opts_item); \ |
| 1453 | \ |
| 1454 | mutex_lock(&opts->lock); \ |
| 1455 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ |
| 1456 | mutex_unlock(&opts->lock); \ |
| 1457 | \ |
| 1458 | mutex_unlock(su_mutex); \ |
| 1459 | return result; \ |
| 1460 | } \ |
| 1461 | \ |
| 1462 | static ssize_t \ |
| 1463 | uvcg_uncompressed_##cname##_store(struct uvcg_uncompressed *u, \ |
| 1464 | const char *page, size_t len) \ |
| 1465 | { \ |
| 1466 | struct f_uvc_opts *opts; \ |
| 1467 | struct config_item *opts_item; \ |
| 1468 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ |
| 1469 | int ret; \ |
| 1470 | u8 num; \ |
| 1471 | \ |
| 1472 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 1473 | \ |
| 1474 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ |
| 1475 | opts = to_f_uvc_opts(opts_item); \ |
| 1476 | \ |
| 1477 | mutex_lock(&opts->lock); \ |
| 1478 | if (u->fmt.linked || opts->refcnt) { \ |
| 1479 | ret = -EBUSY; \ |
| 1480 | goto end; \ |
| 1481 | } \ |
| 1482 | \ |
| 1483 | ret = kstrtou8(page, 0, &num); \ |
| 1484 | if (ret) \ |
| 1485 | goto end; \ |
| 1486 | \ |
| 1487 | if (num > 255) { \ |
| 1488 | ret = -EINVAL; \ |
| 1489 | goto end; \ |
| 1490 | } \ |
| 1491 | u->desc.aname = num; \ |
| 1492 | ret = len; \ |
| 1493 | end: \ |
| 1494 | mutex_unlock(&opts->lock); \ |
| 1495 | mutex_unlock(su_mutex); \ |
| 1496 | return ret; \ |
| 1497 | } \ |
| 1498 | \ |
| 1499 | static struct uvcg_uncompressed_attribute \ |
| 1500 | uvcg_uncompressed_##cname = \ |
| 1501 | __CONFIGFS_ATTR(aname, S_IRUGO | S_IWUSR, \ |
| 1502 | uvcg_uncompressed_##cname##_show, \ |
| 1503 | uvcg_uncompressed_##cname##_store) |
| 1504 | |
| 1505 | #define identity_conv(x) (x) |
| 1506 | |
| 1507 | UVCG_UNCOMPRESSED_ATTR(b_bits_per_pixel, bBitsPerPixel, identity_conv); |
| 1508 | UVCG_UNCOMPRESSED_ATTR(b_default_frame_index, bDefaultFrameIndex, |
| 1509 | identity_conv); |
| 1510 | UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, identity_conv); |
| 1511 | UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, identity_conv); |
| 1512 | UVCG_UNCOMPRESSED_ATTR_RO(bm_interface_flags, bmInterfaceFlags, identity_conv); |
| 1513 | |
| 1514 | #undef identity_conv |
| 1515 | |
| 1516 | #undef UVCG_UNCOMPRESSED_ATTR |
| 1517 | #undef UVCG_UNCOMPRESSED_ATTR_RO |
| 1518 | |
| 1519 | static inline ssize_t |
| 1520 | uvcg_uncompressed_bma_controls_show(struct uvcg_uncompressed *unc, char *page) |
| 1521 | { |
| 1522 | return uvcg_format_bma_controls_show(&unc->fmt, page); |
| 1523 | } |
| 1524 | |
| 1525 | static inline ssize_t |
| 1526 | uvcg_uncompressed_bma_controls_store(struct uvcg_uncompressed *ch, |
| 1527 | const char *page, size_t len) |
| 1528 | { |
| 1529 | return uvcg_format_bma_controls_store(&ch->fmt, page, len); |
| 1530 | } |
| 1531 | |
| 1532 | static struct uvcg_uncompressed_attribute uvcg_uncompressed_bma_controls = |
| 1533 | __CONFIGFS_ATTR(bmaControls, S_IRUGO | S_IWUSR, |
| 1534 | uvcg_uncompressed_bma_controls_show, |
| 1535 | uvcg_uncompressed_bma_controls_store); |
| 1536 | |
| 1537 | static struct configfs_attribute *uvcg_uncompressed_attrs[] = { |
| 1538 | &uvcg_uncompressed_guid_format.attr, |
| 1539 | &uvcg_uncompressed_b_bits_per_pixel.attr, |
| 1540 | &uvcg_uncompressed_b_default_frame_index.attr, |
| 1541 | &uvcg_uncompressed_b_aspect_ratio_x.attr, |
| 1542 | &uvcg_uncompressed_b_aspect_ratio_y.attr, |
| 1543 | &uvcg_uncompressed_bm_interface_flags.attr, |
| 1544 | &uvcg_uncompressed_bma_controls.attr, |
| 1545 | NULL, |
| 1546 | }; |
| 1547 | |
| 1548 | struct config_item_type uvcg_uncompressed_type = { |
| 1549 | .ct_item_ops = &uvcg_uncompressed_item_ops, |
| 1550 | .ct_group_ops = &uvcg_uncompressed_group_ops, |
| 1551 | .ct_attrs = uvcg_uncompressed_attrs, |
| 1552 | .ct_owner = THIS_MODULE, |
| 1553 | }; |
| 1554 | |
| 1555 | static struct config_group *uvcg_uncompressed_make(struct config_group *group, |
| 1556 | const char *name) |
| 1557 | { |
| 1558 | static char guid[] = { |
| 1559 | 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, |
| 1560 | 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 |
| 1561 | }; |
| 1562 | struct uvcg_uncompressed *h; |
| 1563 | |
| 1564 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
| 1565 | if (!h) |
| 1566 | return ERR_CAST(h); |
| 1567 | |
| 1568 | h->desc.bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE; |
| 1569 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; |
| 1570 | h->desc.bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED; |
| 1571 | memcpy(h->desc.guidFormat, guid, sizeof(guid)); |
| 1572 | h->desc.bBitsPerPixel = 16; |
| 1573 | h->desc.bDefaultFrameIndex = 1; |
| 1574 | h->desc.bAspectRatioX = 0; |
| 1575 | h->desc.bAspectRatioY = 0; |
| 1576 | h->desc.bmInterfaceFlags = 0; |
| 1577 | h->desc.bCopyProtect = 0; |
| 1578 | |
| 1579 | h->fmt.type = UVCG_UNCOMPRESSED; |
| 1580 | config_group_init_type_name(&h->fmt.group, name, |
| 1581 | &uvcg_uncompressed_type); |
| 1582 | |
| 1583 | return &h->fmt.group; |
| 1584 | } |
| 1585 | |
| 1586 | void uvcg_uncompressed_drop(struct config_group *group, |
| 1587 | struct config_item *item) |
| 1588 | { |
| 1589 | struct uvcg_uncompressed *h = to_uvcg_uncompressed(item); |
| 1590 | |
| 1591 | kfree(h); |
| 1592 | } |
| 1593 | |
| 1594 | static struct configfs_group_operations uvcg_uncompressed_grp_ops = { |
| 1595 | .make_group = uvcg_uncompressed_make, |
| 1596 | .drop_item = uvcg_uncompressed_drop, |
| 1597 | }; |
| 1598 | |
| 1599 | static struct config_item_type uvcg_uncompressed_grp_type = { |
| 1600 | .ct_group_ops = &uvcg_uncompressed_grp_ops, |
| 1601 | .ct_owner = THIS_MODULE, |
| 1602 | }; |
| 1603 | |
| 1604 | /* streaming/mjpeg/<NAME> */ |
| 1605 | struct uvcg_mjpeg { |
| 1606 | struct uvcg_format fmt; |
| 1607 | struct uvc_format_mjpeg desc; |
| 1608 | }; |
| 1609 | |
| 1610 | struct uvcg_mjpeg *to_uvcg_mjpeg(struct config_item *item) |
| 1611 | { |
| 1612 | return container_of( |
| 1613 | container_of(to_config_group(item), struct uvcg_format, group), |
| 1614 | struct uvcg_mjpeg, fmt); |
| 1615 | } |
| 1616 | |
| 1617 | CONFIGFS_ATTR_STRUCT(uvcg_mjpeg); |
| 1618 | CONFIGFS_ATTR_OPS(uvcg_mjpeg); |
| 1619 | |
| 1620 | static struct configfs_item_operations uvcg_mjpeg_item_ops = { |
| 1621 | .show_attribute = uvcg_mjpeg_attr_show, |
| 1622 | .store_attribute = uvcg_mjpeg_attr_store, |
| 1623 | }; |
| 1624 | |
| 1625 | static struct configfs_group_operations uvcg_mjpeg_group_ops = { |
| 1626 | .make_item = uvcg_frame_make, |
| 1627 | .drop_item = uvcg_frame_drop, |
| 1628 | }; |
| 1629 | |
| 1630 | #define UVCG_MJPEG_ATTR_RO(cname, aname, conv) \ |
| 1631 | static ssize_t uvcg_mjpeg_##cname##_show(struct uvcg_mjpeg *u, char *page)\ |
| 1632 | { \ |
| 1633 | struct f_uvc_opts *opts; \ |
| 1634 | struct config_item *opts_item; \ |
| 1635 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ |
| 1636 | int result; \ |
| 1637 | \ |
| 1638 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 1639 | \ |
| 1640 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ |
| 1641 | opts = to_f_uvc_opts(opts_item); \ |
| 1642 | \ |
| 1643 | mutex_lock(&opts->lock); \ |
| 1644 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ |
| 1645 | mutex_unlock(&opts->lock); \ |
| 1646 | \ |
| 1647 | mutex_unlock(su_mutex); \ |
| 1648 | return result; \ |
| 1649 | } \ |
| 1650 | \ |
| 1651 | static struct uvcg_mjpeg_attribute \ |
| 1652 | uvcg_mjpeg_##cname = \ |
| 1653 | __CONFIGFS_ATTR_RO(aname, uvcg_mjpeg_##cname##_show) |
| 1654 | |
| 1655 | #define UVCG_MJPEG_ATTR(cname, aname, conv) \ |
| 1656 | static ssize_t uvcg_mjpeg_##cname##_show(struct uvcg_mjpeg *u, char *page)\ |
| 1657 | { \ |
| 1658 | struct f_uvc_opts *opts; \ |
| 1659 | struct config_item *opts_item; \ |
| 1660 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ |
| 1661 | int result; \ |
| 1662 | \ |
| 1663 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 1664 | \ |
| 1665 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ |
| 1666 | opts = to_f_uvc_opts(opts_item); \ |
| 1667 | \ |
| 1668 | mutex_lock(&opts->lock); \ |
| 1669 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ |
| 1670 | mutex_unlock(&opts->lock); \ |
| 1671 | \ |
| 1672 | mutex_unlock(su_mutex); \ |
| 1673 | return result; \ |
| 1674 | } \ |
| 1675 | \ |
| 1676 | static ssize_t \ |
| 1677 | uvcg_mjpeg_##cname##_store(struct uvcg_mjpeg *u, \ |
| 1678 | const char *page, size_t len) \ |
| 1679 | { \ |
| 1680 | struct f_uvc_opts *opts; \ |
| 1681 | struct config_item *opts_item; \ |
| 1682 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ |
| 1683 | int ret; \ |
| 1684 | u8 num; \ |
| 1685 | \ |
| 1686 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 1687 | \ |
| 1688 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ |
| 1689 | opts = to_f_uvc_opts(opts_item); \ |
| 1690 | \ |
| 1691 | mutex_lock(&opts->lock); \ |
| 1692 | if (u->fmt.linked || opts->refcnt) { \ |
| 1693 | ret = -EBUSY; \ |
| 1694 | goto end; \ |
| 1695 | } \ |
| 1696 | \ |
| 1697 | ret = kstrtou8(page, 0, &num); \ |
| 1698 | if (ret) \ |
| 1699 | goto end; \ |
| 1700 | \ |
| 1701 | if (num > 255) { \ |
| 1702 | ret = -EINVAL; \ |
| 1703 | goto end; \ |
| 1704 | } \ |
| 1705 | u->desc.aname = num; \ |
| 1706 | ret = len; \ |
| 1707 | end: \ |
| 1708 | mutex_unlock(&opts->lock); \ |
| 1709 | mutex_unlock(su_mutex); \ |
| 1710 | return ret; \ |
| 1711 | } \ |
| 1712 | \ |
| 1713 | static struct uvcg_mjpeg_attribute \ |
| 1714 | uvcg_mjpeg_##cname = \ |
| 1715 | __CONFIGFS_ATTR(aname, S_IRUGO | S_IWUSR, \ |
| 1716 | uvcg_mjpeg_##cname##_show, \ |
| 1717 | uvcg_mjpeg_##cname##_store) |
| 1718 | |
| 1719 | #define identity_conv(x) (x) |
| 1720 | |
| 1721 | UVCG_MJPEG_ATTR(b_default_frame_index, bDefaultFrameIndex, |
| 1722 | identity_conv); |
| 1723 | UVCG_MJPEG_ATTR_RO(bm_flags, bmFlags, identity_conv); |
| 1724 | UVCG_MJPEG_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, identity_conv); |
| 1725 | UVCG_MJPEG_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, identity_conv); |
| 1726 | UVCG_MJPEG_ATTR_RO(bm_interface_flags, bmInterfaceFlags, identity_conv); |
| 1727 | |
| 1728 | #undef identity_conv |
| 1729 | |
| 1730 | #undef UVCG_MJPEG_ATTR |
| 1731 | #undef UVCG_MJPEG_ATTR_RO |
| 1732 | |
| 1733 | static inline ssize_t |
| 1734 | uvcg_mjpeg_bma_controls_show(struct uvcg_mjpeg *unc, char *page) |
| 1735 | { |
| 1736 | return uvcg_format_bma_controls_show(&unc->fmt, page); |
| 1737 | } |
| 1738 | |
| 1739 | static inline ssize_t |
| 1740 | uvcg_mjpeg_bma_controls_store(struct uvcg_mjpeg *ch, |
| 1741 | const char *page, size_t len) |
| 1742 | { |
| 1743 | return uvcg_format_bma_controls_store(&ch->fmt, page, len); |
| 1744 | } |
| 1745 | |
| 1746 | static struct uvcg_mjpeg_attribute uvcg_mjpeg_bma_controls = |
| 1747 | __CONFIGFS_ATTR(bmaControls, S_IRUGO | S_IWUSR, |
| 1748 | uvcg_mjpeg_bma_controls_show, |
| 1749 | uvcg_mjpeg_bma_controls_store); |
| 1750 | |
| 1751 | static struct configfs_attribute *uvcg_mjpeg_attrs[] = { |
| 1752 | &uvcg_mjpeg_b_default_frame_index.attr, |
| 1753 | &uvcg_mjpeg_bm_flags.attr, |
| 1754 | &uvcg_mjpeg_b_aspect_ratio_x.attr, |
| 1755 | &uvcg_mjpeg_b_aspect_ratio_y.attr, |
| 1756 | &uvcg_mjpeg_bm_interface_flags.attr, |
| 1757 | &uvcg_mjpeg_bma_controls.attr, |
| 1758 | NULL, |
| 1759 | }; |
| 1760 | |
| 1761 | struct config_item_type uvcg_mjpeg_type = { |
| 1762 | .ct_item_ops = &uvcg_mjpeg_item_ops, |
| 1763 | .ct_group_ops = &uvcg_mjpeg_group_ops, |
| 1764 | .ct_attrs = uvcg_mjpeg_attrs, |
| 1765 | .ct_owner = THIS_MODULE, |
| 1766 | }; |
| 1767 | |
| 1768 | static struct config_group *uvcg_mjpeg_make(struct config_group *group, |
| 1769 | const char *name) |
| 1770 | { |
| 1771 | struct uvcg_mjpeg *h; |
| 1772 | |
| 1773 | h = kzalloc(sizeof(*h), GFP_KERNEL); |
| 1774 | if (!h) |
| 1775 | return ERR_CAST(h); |
| 1776 | |
| 1777 | h->desc.bLength = UVC_DT_FORMAT_MJPEG_SIZE; |
| 1778 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; |
| 1779 | h->desc.bDescriptorSubType = UVC_VS_FORMAT_MJPEG; |
| 1780 | h->desc.bDefaultFrameIndex = 1; |
| 1781 | h->desc.bAspectRatioX = 0; |
| 1782 | h->desc.bAspectRatioY = 0; |
| 1783 | h->desc.bmInterfaceFlags = 0; |
| 1784 | h->desc.bCopyProtect = 0; |
| 1785 | |
| 1786 | h->fmt.type = UVCG_MJPEG; |
| 1787 | config_group_init_type_name(&h->fmt.group, name, |
| 1788 | &uvcg_mjpeg_type); |
| 1789 | |
| 1790 | return &h->fmt.group; |
| 1791 | } |
| 1792 | |
| 1793 | void uvcg_mjpeg_drop(struct config_group *group, |
| 1794 | struct config_item *item) |
| 1795 | { |
| 1796 | struct uvcg_mjpeg *h = to_uvcg_mjpeg(item); |
| 1797 | |
| 1798 | kfree(h); |
| 1799 | } |
| 1800 | |
| 1801 | static struct configfs_group_operations uvcg_mjpeg_grp_ops = { |
| 1802 | .make_group = uvcg_mjpeg_make, |
| 1803 | .drop_item = uvcg_mjpeg_drop, |
| 1804 | }; |
| 1805 | |
| 1806 | static struct config_item_type uvcg_mjpeg_grp_type = { |
| 1807 | .ct_group_ops = &uvcg_mjpeg_grp_ops, |
| 1808 | .ct_owner = THIS_MODULE, |
| 1809 | }; |
| 1810 | |
| 1811 | /* streaming/color_matching/default */ |
| 1812 | static struct uvcg_default_color_matching { |
| 1813 | struct config_group group; |
| 1814 | } uvcg_default_color_matching; |
| 1815 | |
| 1816 | static inline struct uvcg_default_color_matching |
| 1817 | *to_uvcg_default_color_matching(struct config_item *item) |
| 1818 | { |
| 1819 | return container_of(to_config_group(item), |
| 1820 | struct uvcg_default_color_matching, group); |
| 1821 | } |
| 1822 | |
| 1823 | CONFIGFS_ATTR_STRUCT(uvcg_default_color_matching); |
| 1824 | CONFIGFS_ATTR_OPS_RO(uvcg_default_color_matching); |
| 1825 | |
| 1826 | static struct configfs_item_operations uvcg_default_color_matching_item_ops = { |
| 1827 | .show_attribute = uvcg_default_color_matching_attr_show, |
| 1828 | }; |
| 1829 | |
| 1830 | #define UVCG_DEFAULT_COLOR_MATCHING_ATTR(cname, aname, conv) \ |
| 1831 | static ssize_t uvcg_default_color_matching_##cname##_show( \ |
| 1832 | struct uvcg_default_color_matching *dc, char *page) \ |
| 1833 | { \ |
| 1834 | struct f_uvc_opts *opts; \ |
| 1835 | struct config_item *opts_item; \ |
| 1836 | struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; \ |
| 1837 | struct uvc_color_matching_descriptor *cd; \ |
| 1838 | int result; \ |
| 1839 | \ |
| 1840 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ |
| 1841 | \ |
| 1842 | opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent; \ |
| 1843 | opts = to_f_uvc_opts(opts_item); \ |
| 1844 | cd = &opts->uvc_color_matching; \ |
| 1845 | \ |
| 1846 | mutex_lock(&opts->lock); \ |
| 1847 | result = sprintf(page, "%d\n", conv(cd->aname)); \ |
| 1848 | mutex_unlock(&opts->lock); \ |
| 1849 | \ |
| 1850 | mutex_unlock(su_mutex); \ |
| 1851 | return result; \ |
| 1852 | } \ |
| 1853 | \ |
| 1854 | static struct uvcg_default_color_matching_attribute \ |
| 1855 | uvcg_default_color_matching_##cname = \ |
| 1856 | __CONFIGFS_ATTR_RO(aname, uvcg_default_color_matching_##cname##_show) |
| 1857 | |
| 1858 | #define identity_conv(x) (x) |
| 1859 | |
| 1860 | UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_color_primaries, bColorPrimaries, |
| 1861 | identity_conv); |
| 1862 | UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_transfer_characteristics, |
| 1863 | bTransferCharacteristics, identity_conv); |
| 1864 | UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_matrix_coefficients, bMatrixCoefficients, |
| 1865 | identity_conv); |
| 1866 | |
| 1867 | #undef identity_conv |
| 1868 | |
| 1869 | #undef UVCG_DEFAULT_COLOR_MATCHING_ATTR |
| 1870 | |
| 1871 | static struct configfs_attribute *uvcg_default_color_matching_attrs[] = { |
| 1872 | &uvcg_default_color_matching_b_color_primaries.attr, |
| 1873 | &uvcg_default_color_matching_b_transfer_characteristics.attr, |
| 1874 | &uvcg_default_color_matching_b_matrix_coefficients.attr, |
| 1875 | NULL, |
| 1876 | }; |
| 1877 | |
| 1878 | static struct config_item_type uvcg_default_color_matching_type = { |
| 1879 | .ct_item_ops = &uvcg_default_color_matching_item_ops, |
| 1880 | .ct_attrs = uvcg_default_color_matching_attrs, |
| 1881 | .ct_owner = THIS_MODULE, |
| 1882 | }; |
| 1883 | |
| 1884 | /* struct uvcg_color_matching {}; */ |
| 1885 | |
| 1886 | static struct config_group *uvcg_color_matching_default_groups[] = { |
| 1887 | &uvcg_default_color_matching.group, |
| 1888 | NULL, |
| 1889 | }; |
| 1890 | |
| 1891 | /* streaming/color_matching */ |
| 1892 | static struct uvcg_color_matching_grp { |
| 1893 | struct config_group group; |
| 1894 | } uvcg_color_matching_grp; |
| 1895 | |
| 1896 | static struct config_item_type uvcg_color_matching_grp_type = { |
| 1897 | .ct_owner = THIS_MODULE, |
| 1898 | }; |
| 1899 | |
| 1900 | /* streaming/class/{fs|hs|ss} */ |
| 1901 | static struct uvcg_streaming_class { |
| 1902 | struct config_group group; |
| 1903 | } uvcg_streaming_class_fs, uvcg_streaming_class_hs, uvcg_streaming_class_ss; |
| 1904 | |
| 1905 | |
| 1906 | static inline struct uvc_descriptor_header |
| 1907 | ***__uvcg_get_stream_class_arr(struct config_item *i, struct f_uvc_opts *o) |
| 1908 | { |
| 1909 | struct uvcg_streaming_class *cl = container_of(to_config_group(i), |
| 1910 | struct uvcg_streaming_class, group); |
| 1911 | |
| 1912 | if (cl == &uvcg_streaming_class_fs) |
| 1913 | return &o->uvc_fs_streaming_cls; |
| 1914 | |
| 1915 | if (cl == &uvcg_streaming_class_hs) |
| 1916 | return &o->uvc_hs_streaming_cls; |
| 1917 | |
| 1918 | if (cl == &uvcg_streaming_class_ss) |
| 1919 | return &o->uvc_ss_streaming_cls; |
| 1920 | |
| 1921 | return NULL; |
| 1922 | } |
| 1923 | |
| 1924 | enum uvcg_strm_type { |
| 1925 | UVCG_HEADER = 0, |
| 1926 | UVCG_FORMAT, |
| 1927 | UVCG_FRAME |
| 1928 | }; |
| 1929 | |
| 1930 | static int __uvcg_iter_strm_cls(void *priv1, void *priv2, void *priv3, |
| 1931 | int (*fun)(void *, void *, void *, int, enum uvcg_strm_type type)) |
| 1932 | { |
| 1933 | struct uvcg_streaming_header *h = priv1; |
| 1934 | struct uvcg_format_ptr *f; |
| 1935 | struct config_group *grp; |
| 1936 | struct config_item *item; |
| 1937 | struct uvcg_frame *frm; |
| 1938 | int ret, i, j; |
| 1939 | |
| 1940 | if (!fun) |
| 1941 | return -EINVAL; |
| 1942 | |
| 1943 | i = j = 0; |
| 1944 | ret = fun(h, priv2, priv3, 0, UVCG_HEADER); |
| 1945 | if (ret) |
| 1946 | return ret; |
| 1947 | list_for_each_entry(f, &h->formats, entry) { |
| 1948 | ret = fun(f->fmt, priv2, priv3, i++, UVCG_FORMAT); |
| 1949 | if (ret) |
| 1950 | return ret; |
| 1951 | grp = &f->fmt->group; |
| 1952 | list_for_each_entry(item, &grp->cg_children, ci_entry) { |
| 1953 | frm = to_uvcg_frame(item); |
| 1954 | ret = fun(frm, priv2, priv3, j++, UVCG_FRAME); |
| 1955 | if (ret) |
| 1956 | return ret; |
| 1957 | } |
| 1958 | } |
| 1959 | |
| 1960 | return ret; |
| 1961 | } |
| 1962 | |
| 1963 | static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n, |
| 1964 | enum uvcg_strm_type type) |
| 1965 | { |
| 1966 | size_t *size = priv2; |
| 1967 | size_t *count = priv3; |
| 1968 | |
| 1969 | switch (type) { |
| 1970 | case UVCG_HEADER: { |
| 1971 | struct uvcg_streaming_header *h = priv1; |
| 1972 | |
| 1973 | *size += sizeof(h->desc); |
| 1974 | /* bmaControls */ |
| 1975 | *size += h->num_fmt * UVCG_STREAMING_CONTROL_SIZE; |
| 1976 | } |
| 1977 | break; |
| 1978 | case UVCG_FORMAT: { |
| 1979 | struct uvcg_format *fmt = priv1; |
| 1980 | |
| 1981 | if (fmt->type == UVCG_UNCOMPRESSED) { |
| 1982 | struct uvcg_uncompressed *u = |
| 1983 | container_of(fmt, struct uvcg_uncompressed, |
| 1984 | fmt); |
| 1985 | |
| 1986 | *size += sizeof(u->desc); |
| 1987 | } else if (fmt->type == UVCG_MJPEG) { |
| 1988 | struct uvcg_mjpeg *m = |
| 1989 | container_of(fmt, struct uvcg_mjpeg, fmt); |
| 1990 | |
| 1991 | *size += sizeof(m->desc); |
| 1992 | } else { |
| 1993 | return -EINVAL; |
| 1994 | } |
| 1995 | } |
| 1996 | break; |
| 1997 | case UVCG_FRAME: { |
| 1998 | struct uvcg_frame *frm = priv1; |
| 1999 | int sz = sizeof(frm->dw_frame_interval); |
| 2000 | |
| 2001 | *size += sizeof(frm->frame); |
| 2002 | *size += frm->frame.b_frame_interval_type * sz; |
| 2003 | } |
| 2004 | break; |
| 2005 | } |
| 2006 | |
| 2007 | ++*count; |
| 2008 | |
| 2009 | return 0; |
| 2010 | } |
| 2011 | |
| 2012 | static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n, |
| 2013 | enum uvcg_strm_type type) |
| 2014 | { |
| 2015 | void **dest = priv2; |
| 2016 | struct uvc_descriptor_header ***array = priv3; |
| 2017 | size_t sz; |
| 2018 | |
| 2019 | **array = *dest; |
| 2020 | ++*array; |
| 2021 | |
| 2022 | switch (type) { |
| 2023 | case UVCG_HEADER: { |
| 2024 | struct uvc_input_header_descriptor *ihdr = *dest; |
| 2025 | struct uvcg_streaming_header *h = priv1; |
| 2026 | struct uvcg_format_ptr *f; |
| 2027 | |
| 2028 | memcpy(*dest, &h->desc, sizeof(h->desc)); |
| 2029 | *dest += sizeof(h->desc); |
| 2030 | sz = UVCG_STREAMING_CONTROL_SIZE; |
| 2031 | list_for_each_entry(f, &h->formats, entry) { |
| 2032 | memcpy(*dest, f->fmt->bmaControls, sz); |
| 2033 | *dest += sz; |
| 2034 | } |
| 2035 | ihdr->bLength = sizeof(h->desc) + h->num_fmt * sz; |
| 2036 | ihdr->bNumFormats = h->num_fmt; |
| 2037 | } |
| 2038 | break; |
| 2039 | case UVCG_FORMAT: { |
| 2040 | struct uvcg_format *fmt = priv1; |
| 2041 | |
| 2042 | if (fmt->type == UVCG_UNCOMPRESSED) { |
| 2043 | struct uvc_format_uncompressed *unc = *dest; |
| 2044 | struct uvcg_uncompressed *u = |
| 2045 | container_of(fmt, struct uvcg_uncompressed, |
| 2046 | fmt); |
| 2047 | |
| 2048 | memcpy(*dest, &u->desc, sizeof(u->desc)); |
| 2049 | *dest += sizeof(u->desc); |
| 2050 | unc->bNumFrameDescriptors = fmt->num_frames; |
| 2051 | unc->bFormatIndex = n + 1; |
| 2052 | } else if (fmt->type == UVCG_MJPEG) { |
| 2053 | struct uvc_format_mjpeg *mjp = *dest; |
| 2054 | struct uvcg_mjpeg *m = |
| 2055 | container_of(fmt, struct uvcg_mjpeg, fmt); |
| 2056 | |
| 2057 | memcpy(*dest, &m->desc, sizeof(m->desc)); |
| 2058 | *dest += sizeof(m->desc); |
| 2059 | mjp->bNumFrameDescriptors = fmt->num_frames; |
| 2060 | mjp->bFormatIndex = n + 1; |
| 2061 | } else { |
| 2062 | return -EINVAL; |
| 2063 | } |
| 2064 | } |
| 2065 | break; |
| 2066 | case UVCG_FRAME: { |
| 2067 | struct uvcg_frame *frm = priv1; |
| 2068 | struct uvc_descriptor_header *h = *dest; |
| 2069 | |
| 2070 | sz = sizeof(frm->frame); |
| 2071 | memcpy(*dest, &frm->frame, sz); |
| 2072 | *dest += sz; |
| 2073 | sz = frm->frame.b_frame_interval_type * |
| 2074 | sizeof(*frm->dw_frame_interval); |
| 2075 | memcpy(*dest, frm->dw_frame_interval, sz); |
| 2076 | *dest += sz; |
| 2077 | if (frm->fmt_type == UVCG_UNCOMPRESSED) |
| 2078 | h->bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE( |
| 2079 | frm->frame.b_frame_interval_type); |
| 2080 | else if (frm->fmt_type == UVCG_MJPEG) |
| 2081 | h->bLength = UVC_DT_FRAME_MJPEG_SIZE( |
| 2082 | frm->frame.b_frame_interval_type); |
| 2083 | } |
| 2084 | break; |
| 2085 | } |
| 2086 | |
| 2087 | return 0; |
| 2088 | } |
| 2089 | |
| 2090 | static int uvcg_streaming_class_allow_link(struct config_item *src, |
| 2091 | struct config_item *target) |
| 2092 | { |
| 2093 | struct config_item *streaming, *header; |
| 2094 | struct f_uvc_opts *opts; |
| 2095 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; |
| 2096 | struct uvc_descriptor_header ***class_array, **cl_arr; |
| 2097 | struct uvcg_streaming_header *target_hdr; |
| 2098 | void *data; |
| 2099 | size_t size = 0, count = 0; |
| 2100 | int ret = -EINVAL; |
| 2101 | |
| 2102 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 2103 | |
| 2104 | streaming = src->ci_parent->ci_parent; |
| 2105 | header = config_group_find_item(to_config_group(streaming), "header"); |
| 2106 | if (!header || target->ci_parent != header) |
| 2107 | goto out; |
| 2108 | |
| 2109 | opts = to_f_uvc_opts(streaming->ci_parent); |
| 2110 | |
| 2111 | mutex_lock(&opts->lock); |
| 2112 | |
| 2113 | class_array = __uvcg_get_stream_class_arr(src, opts); |
| 2114 | if (!class_array || *class_array || opts->refcnt) { |
| 2115 | ret = -EBUSY; |
| 2116 | goto unlock; |
| 2117 | } |
| 2118 | |
| 2119 | target_hdr = to_uvcg_streaming_header(target); |
| 2120 | ret = __uvcg_iter_strm_cls(target_hdr, &size, &count, __uvcg_cnt_strm); |
| 2121 | if (ret) |
| 2122 | goto unlock; |
| 2123 | |
| 2124 | count += 2; /* color_matching, NULL */ |
| 2125 | *class_array = kcalloc(count, sizeof(void *), GFP_KERNEL); |
| 2126 | if (!*class_array) { |
| 2127 | ret = PTR_ERR(*class_array); |
| 2128 | goto unlock; |
| 2129 | } |
| 2130 | |
| 2131 | data = kzalloc(size, GFP_KERNEL); |
| 2132 | if (!data) { |
| 2133 | kfree(*class_array); |
| 2134 | *class_array = NULL; |
| 2135 | ret = PTR_ERR(data); |
| 2136 | goto unlock; |
| 2137 | } |
| 2138 | cl_arr = *class_array; |
| 2139 | ret = __uvcg_iter_strm_cls(target_hdr, &data, &cl_arr, |
| 2140 | __uvcg_fill_strm); |
| 2141 | if (ret) { |
| 2142 | kfree(*class_array); |
| 2143 | *class_array = NULL; |
| 2144 | kfree(data); |
| 2145 | goto unlock; |
| 2146 | } |
| 2147 | *cl_arr = (struct uvc_descriptor_header *)&opts->uvc_color_matching; |
| 2148 | |
| 2149 | ++target_hdr->linked; |
| 2150 | ret = 0; |
| 2151 | |
| 2152 | unlock: |
| 2153 | mutex_unlock(&opts->lock); |
| 2154 | out: |
| 2155 | mutex_unlock(su_mutex); |
| 2156 | return ret; |
| 2157 | } |
| 2158 | |
| 2159 | static int uvcg_streaming_class_drop_link(struct config_item *src, |
| 2160 | struct config_item *target) |
| 2161 | { |
| 2162 | struct config_item *streaming, *header; |
| 2163 | struct f_uvc_opts *opts; |
| 2164 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; |
| 2165 | struct uvc_descriptor_header ***class_array; |
| 2166 | struct uvcg_streaming_header *target_hdr; |
| 2167 | int ret = -EINVAL; |
| 2168 | |
| 2169 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ |
| 2170 | |
| 2171 | streaming = src->ci_parent->ci_parent; |
| 2172 | header = config_group_find_item(to_config_group(streaming), "header"); |
| 2173 | if (!header || target->ci_parent != header) |
| 2174 | goto out; |
| 2175 | |
| 2176 | opts = to_f_uvc_opts(streaming->ci_parent); |
| 2177 | |
| 2178 | mutex_lock(&opts->lock); |
| 2179 | |
| 2180 | class_array = __uvcg_get_stream_class_arr(src, opts); |
| 2181 | if (!class_array || !*class_array) |
| 2182 | goto unlock; |
| 2183 | |
| 2184 | if (opts->refcnt) { |
| 2185 | ret = -EBUSY; |
| 2186 | goto unlock; |
| 2187 | } |
| 2188 | |
| 2189 | target_hdr = to_uvcg_streaming_header(target); |
| 2190 | --target_hdr->linked; |
| 2191 | kfree(**class_array); |
| 2192 | kfree(*class_array); |
| 2193 | *class_array = NULL; |
| 2194 | ret = 0; |
| 2195 | |
| 2196 | unlock: |
| 2197 | mutex_unlock(&opts->lock); |
| 2198 | out: |
| 2199 | mutex_unlock(su_mutex); |
| 2200 | return ret; |
| 2201 | } |
| 2202 | |
| 2203 | static struct configfs_item_operations uvcg_streaming_class_item_ops = { |
| 2204 | .allow_link = uvcg_streaming_class_allow_link, |
| 2205 | .drop_link = uvcg_streaming_class_drop_link, |
| 2206 | }; |
| 2207 | |
| 2208 | static struct config_item_type uvcg_streaming_class_type = { |
| 2209 | .ct_item_ops = &uvcg_streaming_class_item_ops, |
| 2210 | .ct_owner = THIS_MODULE, |
| 2211 | }; |
| 2212 | |
| 2213 | static struct config_group *uvcg_streaming_class_default_groups[] = { |
| 2214 | &uvcg_streaming_class_fs.group, |
| 2215 | &uvcg_streaming_class_hs.group, |
| 2216 | &uvcg_streaming_class_ss.group, |
| 2217 | NULL, |
| 2218 | }; |
| 2219 | |
| 2220 | /* streaming/class */ |
| 2221 | static struct uvcg_streaming_class_grp { |
| 2222 | struct config_group group; |
| 2223 | } uvcg_streaming_class_grp; |
| 2224 | |
| 2225 | static struct config_item_type uvcg_streaming_class_grp_type = { |
| 2226 | .ct_owner = THIS_MODULE, |
| 2227 | }; |
| 2228 | |
| 2229 | static struct config_group *uvcg_streaming_default_groups[] = { |
| 2230 | &uvcg_streaming_header_grp.group, |
| 2231 | &uvcg_uncompressed_grp.group, |
| 2232 | &uvcg_mjpeg_grp.group, |
| 2233 | &uvcg_color_matching_grp.group, |
| 2234 | &uvcg_streaming_class_grp.group, |
| 2235 | NULL, |
| 2236 | }; |
| 2237 | |
| 2238 | /* streaming */ |
| 2239 | static struct uvcg_streaming_grp { |
| 2240 | struct config_group group; |
| 2241 | } uvcg_streaming_grp; |
| 2242 | |
| 2243 | static struct config_item_type uvcg_streaming_grp_type = { |
| 2244 | .ct_owner = THIS_MODULE, |
| 2245 | }; |
| 2246 | |
| 2247 | static struct config_group *uvcg_default_groups[] = { |
| 2248 | &uvcg_control_grp.group, |
| 2249 | &uvcg_streaming_grp.group, |
| 2250 | NULL, |
| 2251 | }; |
| 2252 | |
| 2253 | static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item) |
| 2254 | { |
| 2255 | return container_of(to_config_group(item), struct f_uvc_opts, |
| 2256 | func_inst.group); |
| 2257 | } |
| 2258 | |
| 2259 | CONFIGFS_ATTR_STRUCT(f_uvc_opts); |
| 2260 | CONFIGFS_ATTR_OPS(f_uvc_opts); |
| 2261 | |
| 2262 | static void uvc_attr_release(struct config_item *item) |
| 2263 | { |
| 2264 | struct f_uvc_opts *opts = to_f_uvc_opts(item); |
| 2265 | |
| 2266 | usb_put_function_instance(&opts->func_inst); |
| 2267 | } |
| 2268 | |
| 2269 | static struct configfs_item_operations uvc_item_ops = { |
| 2270 | .release = uvc_attr_release, |
| 2271 | .show_attribute = f_uvc_opts_attr_show, |
| 2272 | .store_attribute = f_uvc_opts_attr_store, |
| 2273 | }; |
| 2274 | |
| 2275 | #define UVCG_OPTS_ATTR(cname, conv, str2u, uxx, vnoc, limit) \ |
| 2276 | static ssize_t f_uvc_opts_##cname##_show( \ |
| 2277 | struct f_uvc_opts *opts, char *page) \ |
| 2278 | { \ |
| 2279 | int result; \ |
| 2280 | \ |
| 2281 | mutex_lock(&opts->lock); \ |
| 2282 | result = sprintf(page, "%d\n", conv(opts->cname)); \ |
| 2283 | mutex_unlock(&opts->lock); \ |
| 2284 | \ |
| 2285 | return result; \ |
| 2286 | } \ |
| 2287 | \ |
| 2288 | static ssize_t \ |
| 2289 | f_uvc_opts_##cname##_store(struct f_uvc_opts *opts, \ |
| 2290 | const char *page, size_t len) \ |
| 2291 | { \ |
| 2292 | int ret; \ |
| 2293 | uxx num; \ |
| 2294 | \ |
| 2295 | mutex_lock(&opts->lock); \ |
| 2296 | if (opts->refcnt) { \ |
| 2297 | ret = -EBUSY; \ |
| 2298 | goto end; \ |
| 2299 | } \ |
| 2300 | \ |
| 2301 | ret = str2u(page, 0, &num); \ |
| 2302 | if (ret) \ |
| 2303 | goto end; \ |
| 2304 | \ |
| 2305 | if (num > limit) { \ |
| 2306 | ret = -EINVAL; \ |
| 2307 | goto end; \ |
| 2308 | } \ |
| 2309 | opts->cname = vnoc(num); \ |
| 2310 | ret = len; \ |
| 2311 | end: \ |
| 2312 | mutex_unlock(&opts->lock); \ |
| 2313 | return ret; \ |
| 2314 | } \ |
| 2315 | \ |
| 2316 | static struct f_uvc_opts_attribute \ |
| 2317 | f_uvc_opts_attribute_##cname = \ |
| 2318 | __CONFIGFS_ATTR(cname, S_IRUGO | S_IWUSR, \ |
| 2319 | f_uvc_opts_##cname##_show, \ |
| 2320 | f_uvc_opts_##cname##_store) |
| 2321 | |
| 2322 | #define identity_conv(x) (x) |
| 2323 | |
| 2324 | UVCG_OPTS_ATTR(streaming_interval, identity_conv, kstrtou8, u8, identity_conv, |
| 2325 | 16); |
| 2326 | UVCG_OPTS_ATTR(streaming_maxpacket, le16_to_cpu, kstrtou16, u16, le16_to_cpu, |
| 2327 | 3072); |
| 2328 | UVCG_OPTS_ATTR(streaming_maxburst, identity_conv, kstrtou8, u8, identity_conv, |
| 2329 | 15); |
| 2330 | |
| 2331 | #undef identity_conv |
| 2332 | |
| 2333 | #undef UVCG_OPTS_ATTR |
| 2334 | |
| 2335 | static struct configfs_attribute *uvc_attrs[] = { |
| 2336 | &f_uvc_opts_attribute_streaming_interval.attr, |
| 2337 | &f_uvc_opts_attribute_streaming_maxpacket.attr, |
| 2338 | &f_uvc_opts_attribute_streaming_maxburst.attr, |
| 2339 | NULL, |
| 2340 | }; |
| 2341 | |
| 2342 | static struct config_item_type uvc_func_type = { |
| 2343 | .ct_item_ops = &uvc_item_ops, |
| 2344 | .ct_attrs = uvc_attrs, |
| 2345 | .ct_owner = THIS_MODULE, |
| 2346 | }; |
| 2347 | |
| 2348 | static inline void uvcg_init_group(struct config_group *g, |
| 2349 | struct config_group **default_groups, |
| 2350 | const char *name, |
| 2351 | struct config_item_type *type) |
| 2352 | { |
| 2353 | g->default_groups = default_groups; |
| 2354 | config_group_init_type_name(g, name, type); |
| 2355 | } |
| 2356 | |
| 2357 | int uvcg_attach_configfs(struct f_uvc_opts *opts) |
| 2358 | { |
| 2359 | config_group_init_type_name(&uvcg_control_header_grp.group, |
| 2360 | "header", |
| 2361 | &uvcg_control_header_grp_type); |
| 2362 | config_group_init_type_name(&uvcg_default_processing.group, |
| 2363 | "default", |
| 2364 | &uvcg_default_processing_type); |
| 2365 | uvcg_init_group(&uvcg_processing_grp.group, |
| 2366 | uvcg_processing_default_groups, |
| 2367 | "processing", |
| 2368 | &uvcg_processing_grp_type); |
| 2369 | config_group_init_type_name(&uvcg_default_camera.group, |
| 2370 | "default", |
| 2371 | &uvcg_default_camera_type); |
| 2372 | uvcg_init_group(&uvcg_camera_grp.group, |
| 2373 | uvcg_camera_default_groups, |
| 2374 | "camera", |
| 2375 | &uvcg_camera_grp_type); |
| 2376 | config_group_init_type_name(&uvcg_default_output.group, |
| 2377 | "default", |
| 2378 | &uvcg_default_output_type); |
| 2379 | uvcg_init_group(&uvcg_output_grp.group, |
| 2380 | uvcg_output_default_groups, |
| 2381 | "output", |
| 2382 | &uvcg_output_grp_type); |
| 2383 | uvcg_init_group(&uvcg_terminal_grp.group, |
| 2384 | uvcg_terminal_default_groups, |
| 2385 | "terminal", |
| 2386 | &uvcg_terminal_grp_type); |
| 2387 | config_group_init_type_name(&uvcg_control_class_fs.group, |
| 2388 | "fs", |
| 2389 | &uvcg_control_class_type); |
| 2390 | config_group_init_type_name(&uvcg_control_class_ss.group, |
| 2391 | "ss", |
| 2392 | &uvcg_control_class_type); |
| 2393 | uvcg_init_group(&uvcg_control_class_grp.group, |
| 2394 | uvcg_control_class_default_groups, |
| 2395 | "class", |
| 2396 | &uvcg_control_class_grp_type); |
| 2397 | uvcg_init_group(&uvcg_control_grp.group, |
| 2398 | uvcg_control_default_groups, |
| 2399 | "control", |
| 2400 | &uvcg_control_grp_type); |
| 2401 | config_group_init_type_name(&uvcg_streaming_header_grp.group, |
| 2402 | "header", |
| 2403 | &uvcg_streaming_header_grp_type); |
| 2404 | config_group_init_type_name(&uvcg_uncompressed_grp.group, |
| 2405 | "uncompressed", |
| 2406 | &uvcg_uncompressed_grp_type); |
| 2407 | config_group_init_type_name(&uvcg_mjpeg_grp.group, |
| 2408 | "mjpeg", |
| 2409 | &uvcg_mjpeg_grp_type); |
| 2410 | config_group_init_type_name(&uvcg_default_color_matching.group, |
| 2411 | "default", |
| 2412 | &uvcg_default_color_matching_type); |
| 2413 | uvcg_init_group(&uvcg_color_matching_grp.group, |
| 2414 | uvcg_color_matching_default_groups, |
| 2415 | "color_matching", |
| 2416 | &uvcg_color_matching_grp_type); |
| 2417 | config_group_init_type_name(&uvcg_streaming_class_fs.group, |
| 2418 | "fs", |
| 2419 | &uvcg_streaming_class_type); |
| 2420 | config_group_init_type_name(&uvcg_streaming_class_hs.group, |
| 2421 | "hs", |
| 2422 | &uvcg_streaming_class_type); |
| 2423 | config_group_init_type_name(&uvcg_streaming_class_ss.group, |
| 2424 | "ss", |
| 2425 | &uvcg_streaming_class_type); |
| 2426 | uvcg_init_group(&uvcg_streaming_class_grp.group, |
| 2427 | uvcg_streaming_class_default_groups, |
| 2428 | "class", |
| 2429 | &uvcg_streaming_class_grp_type); |
| 2430 | uvcg_init_group(&uvcg_streaming_grp.group, |
| 2431 | uvcg_streaming_default_groups, |
| 2432 | "streaming", |
| 2433 | &uvcg_streaming_grp_type); |
| 2434 | uvcg_init_group(&opts->func_inst.group, |
| 2435 | uvcg_default_groups, |
| 2436 | "", |
| 2437 | &uvc_func_type); |
| 2438 | return 0; |
| 2439 | } |