Lines Matching +full:data +full:- +full:mapping
1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * uvc_ctrl.c -- USB Video Class driver - Controls
5 * Copyright (C) 2005-2010
23 #include <media/v4l2-ctrls.h>
35 /* ------------------------------------------------------------------------
373 * device. The custom menu_mapping in the control @mapping is used when
380 * The function returns -EINVAL if the V4L2 menu index @idx isn't valid for the
384 static int uvc_mapping_get_menu_value(const struct uvc_control_mapping *mapping, in uvc_mapping_get_menu_value() argument
387 if (!test_bit(idx, &mapping->menu_mask)) in uvc_mapping_get_menu_value()
388 return -EINVAL; in uvc_mapping_get_menu_value()
390 if (mapping->menu_mapping) in uvc_mapping_get_menu_value()
391 return mapping->menu_mapping[idx]; in uvc_mapping_get_menu_value()
397 uvc_mapping_get_menu_name(const struct uvc_control_mapping *mapping, u32 idx) in uvc_mapping_get_menu_name() argument
399 if (!test_bit(idx, &mapping->menu_mask)) in uvc_mapping_get_menu_name()
402 if (mapping->menu_names) in uvc_mapping_get_menu_name()
403 return mapping->menu_names[idx]; in uvc_mapping_get_menu_name()
405 return v4l2_ctrl_get_menu(mapping->id)[idx]; in uvc_mapping_get_menu_name()
408 static s32 uvc_ctrl_get_zoom(struct uvc_control_mapping *mapping, in uvc_ctrl_get_zoom() argument
409 u8 query, const u8 *data) in uvc_ctrl_get_zoom() argument
411 s8 zoom = (s8)data[0]; in uvc_ctrl_get_zoom()
415 return (zoom == 0) ? 0 : (zoom > 0 ? data[2] : -data[2]); in uvc_ctrl_get_zoom()
422 return data[2]; in uvc_ctrl_get_zoom()
426 static void uvc_ctrl_set_zoom(struct uvc_control_mapping *mapping, in uvc_ctrl_set_zoom() argument
427 s32 value, u8 *data) in uvc_ctrl_set_zoom() argument
429 data[0] = value == 0 ? 0 : (value > 0) ? 1 : 0xff; in uvc_ctrl_set_zoom()
430 data[2] = min((int)abs(value), 0xff); in uvc_ctrl_set_zoom()
433 static s32 uvc_ctrl_get_rel_speed(struct uvc_control_mapping *mapping, in uvc_ctrl_get_rel_speed() argument
434 u8 query, const u8 *data) in uvc_ctrl_get_rel_speed() argument
436 unsigned int first = mapping->offset / 8; in uvc_ctrl_get_rel_speed()
437 s8 rel = (s8)data[first]; in uvc_ctrl_get_rel_speed()
441 return (rel == 0) ? 0 : (rel > 0 ? data[first+1] in uvc_ctrl_get_rel_speed()
442 : -data[first+1]); in uvc_ctrl_get_rel_speed()
444 return -data[first+1]; in uvc_ctrl_get_rel_speed()
449 return data[first+1]; in uvc_ctrl_get_rel_speed()
453 static void uvc_ctrl_set_rel_speed(struct uvc_control_mapping *mapping, in uvc_ctrl_set_rel_speed() argument
454 s32 value, u8 *data) in uvc_ctrl_set_rel_speed() argument
456 unsigned int first = mapping->offset / 8; in uvc_ctrl_set_rel_speed()
458 data[first] = value == 0 ? 0 : (value > 0) ? 1 : 0xff; in uvc_ctrl_set_rel_speed()
459 data[first+1] = min_t(int, abs(value), 0xff); in uvc_ctrl_set_rel_speed()
799 /* ------------------------------------------------------------------------
805 return ctrl->uvc_data + id * ctrl->info.size; in uvc_ctrl_data()
808 static inline int uvc_test_bit(const u8 *data, int bit) in uvc_test_bit() argument
810 return (data[bit >> 3] >> (bit & 7)) & 1; in uvc_test_bit()
813 static inline void uvc_clear_bit(u8 *data, int bit) in uvc_clear_bit() argument
815 data[bit >> 3] &= ~(1 << (bit & 7)); in uvc_clear_bit()
819 * Extract the bit string specified by mapping->offset and mapping->size
820 * from the little-endian data stored at 'data' and return the result as
821 * a signed 32bit integer. Sign extension will be performed if the mapping
822 * references a signed data type.
824 static s32 uvc_get_le_value(struct uvc_control_mapping *mapping, in uvc_get_le_value() argument
825 u8 query, const u8 *data) in uvc_get_le_value() argument
827 int bits = mapping->size; in uvc_get_le_value()
828 int offset = mapping->offset; in uvc_get_le_value()
832 data += offset / 8; in uvc_get_le_value()
834 mask = ((1LL << bits) - 1) << offset; in uvc_get_le_value()
837 u8 byte = *data & mask; in uvc_get_le_value()
838 value |= offset > 0 ? (byte >> offset) : (byte << (-offset)); in uvc_get_le_value()
839 bits -= 8 - (offset > 0 ? offset : 0); in uvc_get_le_value()
843 offset -= 8; in uvc_get_le_value()
844 mask = (1 << bits) - 1; in uvc_get_le_value()
845 data++; in uvc_get_le_value()
848 /* Sign-extend the value if needed. */ in uvc_get_le_value()
849 if (mapping->data_type == UVC_CTRL_DATA_TYPE_SIGNED) in uvc_get_le_value()
850 value |= -(value & (1 << (mapping->size - 1))); in uvc_get_le_value()
856 * Set the bit string specified by mapping->offset and mapping->size
857 * in the little-endian data stored at 'data' to the value 'value'.
859 static void uvc_set_le_value(struct uvc_control_mapping *mapping, in uvc_set_le_value() argument
860 s32 value, u8 *data) in uvc_set_le_value() argument
862 int bits = mapping->size; in uvc_set_le_value()
863 int offset = mapping->offset; in uvc_set_le_value()
869 * triggered. UVC devices however want to see a 1 written -> override in uvc_set_le_value()
872 if (mapping->v4l2_type == V4L2_CTRL_TYPE_BUTTON) in uvc_set_le_value()
873 value = -1; in uvc_set_le_value()
875 data += offset / 8; in uvc_set_le_value()
878 for (; bits > 0; data++) { in uvc_set_le_value()
879 mask = ((1LL << bits) - 1) << offset; in uvc_set_le_value()
880 *data = (*data & ~mask) | ((value << offset) & mask); in uvc_set_le_value()
882 bits -= 8 - offset; in uvc_set_le_value()
887 /* ------------------------------------------------------------------------
894 return memcmp(entity->guid, guid, sizeof(entity->guid)) == 0; in uvc_entity_match_guid()
897 /* ------------------------------------------------------------------------
902 struct uvc_control_mapping **mapping, struct uvc_control **control, in __uvc_find_control() argument
912 for (i = 0; i < entity->ncontrols; ++i) { in __uvc_find_control()
913 ctrl = &entity->controls[i]; in __uvc_find_control()
914 if (!ctrl->initialized) in __uvc_find_control()
917 list_for_each_entry(map, &ctrl->info.mappings, list) { in __uvc_find_control()
918 if ((map->id == v4l2_id) && !next) { in __uvc_find_control()
920 *mapping = map; in __uvc_find_control()
924 if ((*mapping == NULL || (*mapping)->id > map->id) && in __uvc_find_control()
925 (map->id > v4l2_id) && next) { in __uvc_find_control()
927 *mapping = map; in __uvc_find_control()
934 u32 v4l2_id, struct uvc_control_mapping **mapping) in uvc_find_control() argument
940 *mapping = NULL; in uvc_find_control()
946 list_for_each_entry(entity, &chain->entities, chain) { in uvc_find_control()
947 __uvc_find_control(entity, v4l2_id, mapping, &ctrl, next); in uvc_find_control()
953 uvc_dbg(chain->dev, CONTROL, "Control 0x%08x not found\n", in uvc_find_control()
964 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_DEF) { in uvc_ctrl_populate_cache()
965 ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id, in uvc_ctrl_populate_cache()
966 chain->dev->intfnum, ctrl->info.selector, in uvc_ctrl_populate_cache()
968 ctrl->info.size); in uvc_ctrl_populate_cache()
973 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) { in uvc_ctrl_populate_cache()
974 ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id, in uvc_ctrl_populate_cache()
975 chain->dev->intfnum, ctrl->info.selector, in uvc_ctrl_populate_cache()
977 ctrl->info.size); in uvc_ctrl_populate_cache()
981 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) { in uvc_ctrl_populate_cache()
982 ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id, in uvc_ctrl_populate_cache()
983 chain->dev->intfnum, ctrl->info.selector, in uvc_ctrl_populate_cache()
985 ctrl->info.size); in uvc_ctrl_populate_cache()
989 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) { in uvc_ctrl_populate_cache()
990 ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id, in uvc_ctrl_populate_cache()
991 chain->dev->intfnum, ctrl->info.selector, in uvc_ctrl_populate_cache()
993 ctrl->info.size); in uvc_ctrl_populate_cache()
995 if (UVC_ENTITY_TYPE(ctrl->entity) != in uvc_ctrl_populate_cache()
1004 uvc_warn_once(chain->dev, UVC_WARN_XU_GET_RES, in uvc_ctrl_populate_cache()
1005 "UVC non compliance - GET_RES failed on " in uvc_ctrl_populate_cache()
1008 ctrl->info.size); in uvc_ctrl_populate_cache()
1012 ctrl->cached = 1; in uvc_ctrl_populate_cache()
1016 static s32 __uvc_ctrl_get_value(struct uvc_control_mapping *mapping, in __uvc_ctrl_get_value() argument
1017 const u8 *data) in __uvc_ctrl_get_value() argument
1019 s32 value = mapping->get(mapping, UVC_GET_CUR, data); in __uvc_ctrl_get_value()
1021 if (mapping->v4l2_type == V4L2_CTRL_TYPE_MENU) { in __uvc_ctrl_get_value()
1024 for (i = 0; BIT(i) <= mapping->menu_mask; ++i) { in __uvc_ctrl_get_value()
1027 if (!test_bit(i, &mapping->menu_mask)) in __uvc_ctrl_get_value()
1030 menu_value = uvc_mapping_get_menu_value(mapping, i); in __uvc_ctrl_get_value()
1045 u8 *data; in __uvc_ctrl_load_cur() local
1048 if (ctrl->loaded) in __uvc_ctrl_load_cur()
1051 data = uvc_ctrl_data(ctrl, UVC_CTRL_DATA_CURRENT); in __uvc_ctrl_load_cur()
1053 if ((ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) == 0) { in __uvc_ctrl_load_cur()
1054 memset(data, 0, ctrl->info.size); in __uvc_ctrl_load_cur()
1055 ctrl->loaded = 1; in __uvc_ctrl_load_cur()
1060 if (ctrl->entity->get_cur) in __uvc_ctrl_load_cur()
1061 ret = ctrl->entity->get_cur(chain->dev, ctrl->entity, in __uvc_ctrl_load_cur()
1062 ctrl->info.selector, data, in __uvc_ctrl_load_cur()
1063 ctrl->info.size); in __uvc_ctrl_load_cur()
1065 ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, in __uvc_ctrl_load_cur()
1066 ctrl->entity->id, chain->dev->intfnum, in __uvc_ctrl_load_cur()
1067 ctrl->info.selector, data, in __uvc_ctrl_load_cur()
1068 ctrl->info.size); in __uvc_ctrl_load_cur()
1073 ctrl->loaded = 1; in __uvc_ctrl_load_cur()
1080 struct uvc_control_mapping *mapping, in __uvc_ctrl_get() argument
1085 if ((ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) == 0) in __uvc_ctrl_get()
1086 return -EACCES; in __uvc_ctrl_get()
1092 *value = __uvc_ctrl_get_value(mapping, in __uvc_ctrl_get()
1107 if (!(chain->ctrl_class_bitmap & BIT(i))) in __uvc_query_v4l2_class()
1119 return -ENODEV; in __uvc_query_v4l2_class()
1129 return -ENODEV; in uvc_query_v4l2_class()
1132 v4l2_ctrl->id = uvc_control_classes[idx]; in uvc_query_v4l2_class()
1133 strscpy(v4l2_ctrl->name, v4l2_ctrl_get_name(v4l2_ctrl->id), in uvc_query_v4l2_class()
1134 sizeof(v4l2_ctrl->name)); in uvc_query_v4l2_class()
1135 v4l2_ctrl->type = V4L2_CTRL_TYPE_CTRL_CLASS; in uvc_query_v4l2_class()
1136 v4l2_ctrl->flags = V4L2_CTRL_FLAG_WRITE_ONLY in uvc_query_v4l2_class()
1157 struct uvc_control_mapping *mapping; in uvc_ctrl_is_accessible() local
1165 return -EACCES; in uvc_ctrl_is_accessible()
1167 ctrl = uvc_find_control(chain, v4l2_id, &mapping); in uvc_ctrl_is_accessible()
1169 return -EINVAL; in uvc_ctrl_is_accessible()
1171 if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) && read) in uvc_ctrl_is_accessible()
1172 return -EACCES; in uvc_ctrl_is_accessible()
1174 if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR) && !read) in uvc_ctrl_is_accessible()
1175 return -EACCES; in uvc_ctrl_is_accessible()
1177 if (ioctl != VIDIOC_S_EXT_CTRLS || !mapping->master_id) in uvc_ctrl_is_accessible()
1184 for (i = ctrls->count - 1; i >= 0; i--) { in uvc_ctrl_is_accessible()
1185 if (ctrls->controls[i].id == mapping->master_id) in uvc_ctrl_is_accessible()
1186 return ctrls->controls[i].value == in uvc_ctrl_is_accessible()
1187 mapping->master_manual ? 0 : -EACCES; in uvc_ctrl_is_accessible()
1190 __uvc_find_control(ctrl->entity, mapping->master_id, &master_map, in uvc_ctrl_is_accessible()
1193 if (!master_ctrl || !(master_ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) in uvc_ctrl_is_accessible()
1197 if (ret >= 0 && val != mapping->master_manual) in uvc_ctrl_is_accessible()
1198 return -EACCES; in uvc_ctrl_is_accessible()
1207 if (map->name) in uvc_map_get_name()
1208 return map->name; in uvc_map_get_name()
1210 name = v4l2_ctrl_get_name(map->id); in uvc_map_get_name()
1218 struct uvc_control_mapping *mapping) in uvc_get_ctrl_bitmap() argument
1225 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) in uvc_get_ctrl_bitmap()
1226 return mapping->get(mapping, UVC_GET_RES, in uvc_get_ctrl_bitmap()
1229 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) in uvc_get_ctrl_bitmap()
1230 return mapping->get(mapping, UVC_GET_MAX, in uvc_get_ctrl_bitmap()
1238 struct uvc_control_mapping *mapping, in __uvc_query_v4l2_ctrl() argument
1246 v4l2_ctrl->id = mapping->id; in __uvc_query_v4l2_ctrl()
1247 v4l2_ctrl->type = mapping->v4l2_type; in __uvc_query_v4l2_ctrl()
1248 strscpy(v4l2_ctrl->name, uvc_map_get_name(mapping), in __uvc_query_v4l2_ctrl()
1249 sizeof(v4l2_ctrl->name)); in __uvc_query_v4l2_ctrl()
1250 v4l2_ctrl->flags = 0; in __uvc_query_v4l2_ctrl()
1252 if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) in __uvc_query_v4l2_ctrl()
1253 v4l2_ctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY; in __uvc_query_v4l2_ctrl()
1254 if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR)) in __uvc_query_v4l2_ctrl()
1255 v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; in __uvc_query_v4l2_ctrl()
1257 if (mapping->master_id) in __uvc_query_v4l2_ctrl()
1258 __uvc_find_control(ctrl->entity, mapping->master_id, in __uvc_query_v4l2_ctrl()
1260 if (master_ctrl && (master_ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) { in __uvc_query_v4l2_ctrl()
1266 if (val != mapping->master_manual) in __uvc_query_v4l2_ctrl()
1267 v4l2_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; in __uvc_query_v4l2_ctrl()
1270 if (!ctrl->cached) { in __uvc_query_v4l2_ctrl()
1276 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_DEF) { in __uvc_query_v4l2_ctrl()
1277 v4l2_ctrl->default_value = mapping->get(mapping, UVC_GET_DEF, in __uvc_query_v4l2_ctrl()
1281 switch (mapping->v4l2_type) { in __uvc_query_v4l2_ctrl()
1283 v4l2_ctrl->minimum = ffs(mapping->menu_mask) - 1; in __uvc_query_v4l2_ctrl()
1284 v4l2_ctrl->maximum = fls(mapping->menu_mask) - 1; in __uvc_query_v4l2_ctrl()
1285 v4l2_ctrl->step = 1; in __uvc_query_v4l2_ctrl()
1287 for (i = 0; BIT(i) <= mapping->menu_mask; ++i) { in __uvc_query_v4l2_ctrl()
1290 if (!test_bit(i, &mapping->menu_mask)) in __uvc_query_v4l2_ctrl()
1293 menu_value = uvc_mapping_get_menu_value(mapping, i); in __uvc_query_v4l2_ctrl()
1295 if (menu_value == v4l2_ctrl->default_value) { in __uvc_query_v4l2_ctrl()
1296 v4l2_ctrl->default_value = i; in __uvc_query_v4l2_ctrl()
1304 v4l2_ctrl->minimum = 0; in __uvc_query_v4l2_ctrl()
1305 v4l2_ctrl->maximum = 1; in __uvc_query_v4l2_ctrl()
1306 v4l2_ctrl->step = 1; in __uvc_query_v4l2_ctrl()
1310 v4l2_ctrl->minimum = 0; in __uvc_query_v4l2_ctrl()
1311 v4l2_ctrl->maximum = 0; in __uvc_query_v4l2_ctrl()
1312 v4l2_ctrl->step = 0; in __uvc_query_v4l2_ctrl()
1316 v4l2_ctrl->minimum = 0; in __uvc_query_v4l2_ctrl()
1317 v4l2_ctrl->maximum = uvc_get_ctrl_bitmap(ctrl, mapping); in __uvc_query_v4l2_ctrl()
1318 v4l2_ctrl->step = 0; in __uvc_query_v4l2_ctrl()
1325 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) in __uvc_query_v4l2_ctrl()
1326 v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN, in __uvc_query_v4l2_ctrl()
1329 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) in __uvc_query_v4l2_ctrl()
1330 v4l2_ctrl->maximum = mapping->get(mapping, UVC_GET_MAX, in __uvc_query_v4l2_ctrl()
1333 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) in __uvc_query_v4l2_ctrl()
1334 v4l2_ctrl->step = mapping->get(mapping, UVC_GET_RES, in __uvc_query_v4l2_ctrl()
1344 struct uvc_control_mapping *mapping; in uvc_query_v4l2_ctrl() local
1347 ret = mutex_lock_interruptible(&chain->ctrl_mutex); in uvc_query_v4l2_ctrl()
1349 return -ERESTARTSYS; in uvc_query_v4l2_ctrl()
1352 if (!(v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL)) { in uvc_query_v4l2_ctrl()
1353 ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, 0, v4l2_ctrl); in uvc_query_v4l2_ctrl()
1358 ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping); in uvc_query_v4l2_ctrl()
1360 ret = -EINVAL; in uvc_query_v4l2_ctrl()
1369 if (v4l2_ctrl->id & V4L2_CTRL_FLAG_NEXT_CTRL) { in uvc_query_v4l2_ctrl()
1370 ret = uvc_query_v4l2_class(chain, v4l2_ctrl->id, mapping->id, in uvc_query_v4l2_ctrl()
1376 ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl); in uvc_query_v4l2_ctrl()
1378 mutex_unlock(&chain->ctrl_mutex); in uvc_query_v4l2_ctrl()
1383 * Mapping V4L2 controls to UVC controls can be straightforward if done well.
1394 struct uvc_control_mapping *mapping; in uvc_query_v4l2_menu() local
1396 u32 index = query_menu->index; in uvc_query_v4l2_menu()
1397 u32 id = query_menu->id; in uvc_query_v4l2_menu()
1402 query_menu->id = id; in uvc_query_v4l2_menu()
1403 query_menu->index = index; in uvc_query_v4l2_menu()
1405 if (index >= BITS_PER_TYPE(mapping->menu_mask)) in uvc_query_v4l2_menu()
1406 return -EINVAL; in uvc_query_v4l2_menu()
1408 ret = mutex_lock_interruptible(&chain->ctrl_mutex); in uvc_query_v4l2_menu()
1410 return -ERESTARTSYS; in uvc_query_v4l2_menu()
1412 ctrl = uvc_find_control(chain, query_menu->id, &mapping); in uvc_query_v4l2_menu()
1413 if (ctrl == NULL || mapping->v4l2_type != V4L2_CTRL_TYPE_MENU) { in uvc_query_v4l2_menu()
1414 ret = -EINVAL; in uvc_query_v4l2_menu()
1418 if (!test_bit(query_menu->index, &mapping->menu_mask)) { in uvc_query_v4l2_menu()
1419 ret = -EINVAL; in uvc_query_v4l2_menu()
1423 if (mapping->data_type == UVC_CTRL_DATA_TYPE_BITMASK) { in uvc_query_v4l2_menu()
1426 if (!ctrl->cached) { in uvc_query_v4l2_menu()
1432 mask = uvc_mapping_get_menu_value(mapping, query_menu->index); in uvc_query_v4l2_menu()
1438 if (!(uvc_get_ctrl_bitmap(ctrl, mapping) & mask)) { in uvc_query_v4l2_menu()
1439 ret = -EINVAL; in uvc_query_v4l2_menu()
1444 name = uvc_mapping_get_menu_name(mapping, query_menu->index); in uvc_query_v4l2_menu()
1446 ret = -EINVAL; in uvc_query_v4l2_menu()
1450 strscpy(query_menu->name, name, sizeof(query_menu->name)); in uvc_query_v4l2_menu()
1453 mutex_unlock(&chain->ctrl_mutex); in uvc_query_v4l2_menu()
1457 /* --------------------------------------------------------------------------
1464 struct uvc_control_mapping *mapping, in uvc_ctrl_fill_event() argument
1469 __uvc_query_v4l2_ctrl(chain, ctrl, mapping, &v4l2_ctrl); in uvc_ctrl_fill_event()
1472 ev->type = V4L2_EVENT_CTRL; in uvc_ctrl_fill_event()
1473 ev->id = v4l2_ctrl.id; in uvc_ctrl_fill_event()
1474 ev->u.ctrl.value = value; in uvc_ctrl_fill_event()
1475 ev->u.ctrl.changes = changes; in uvc_ctrl_fill_event()
1476 ev->u.ctrl.type = v4l2_ctrl.type; in uvc_ctrl_fill_event()
1477 ev->u.ctrl.flags = v4l2_ctrl.flags; in uvc_ctrl_fill_event()
1478 ev->u.ctrl.minimum = v4l2_ctrl.minimum; in uvc_ctrl_fill_event()
1479 ev->u.ctrl.maximum = v4l2_ctrl.maximum; in uvc_ctrl_fill_event()
1480 ev->u.ctrl.step = v4l2_ctrl.step; in uvc_ctrl_fill_event()
1481 ev->u.ctrl.default_value = v4l2_ctrl.default_value; in uvc_ctrl_fill_event()
1488 * @handle can be NULL for asynchronous events related to auto-update controls,
1493 struct uvc_control_mapping *mapping, s32 value, u32 changes) in uvc_ctrl_send_event() argument
1495 struct v4l2_fh *originator = handle ? &handle->vfh : NULL; in uvc_ctrl_send_event()
1499 if (list_empty(&mapping->ev_subs)) in uvc_ctrl_send_event()
1502 uvc_ctrl_fill_event(chain, &ev, ctrl, mapping, value, changes); in uvc_ctrl_send_event()
1504 list_for_each_entry(sev, &mapping->ev_subs, node) { in uvc_ctrl_send_event()
1505 if (sev->fh != originator || in uvc_ctrl_send_event()
1506 (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK) || in uvc_ctrl_send_event()
1508 v4l2_event_queue_fh(sev->fh, &ev); in uvc_ctrl_send_event()
1515 * generated the event and may be NULL for auto-update events.
1520 struct uvc_control_mapping *mapping = NULL; in uvc_ctrl_send_slave_event() local
1525 __uvc_find_control(master->entity, slave_id, &mapping, &ctrl, 0); in uvc_ctrl_send_slave_event()
1529 if (__uvc_ctrl_get(chain, ctrl, mapping, &val) == 0) in uvc_ctrl_send_slave_event()
1532 uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes); in uvc_ctrl_send_slave_event()
1538 lockdep_assert_held(&handle->chain->ctrl_mutex); in uvc_ctrl_set_handle()
1541 if (ctrl->handle) in uvc_ctrl_set_handle()
1542 dev_warn_ratelimited(&handle->stream->dev->udev->dev, in uvc_ctrl_set_handle()
1545 if (new_handle == ctrl->handle) in uvc_ctrl_set_handle()
1548 if (ctrl->handle) { in uvc_ctrl_set_handle()
1549 WARN_ON(!ctrl->handle->pending_async_ctrls); in uvc_ctrl_set_handle()
1550 if (ctrl->handle->pending_async_ctrls) in uvc_ctrl_set_handle()
1551 ctrl->handle->pending_async_ctrls--; in uvc_ctrl_set_handle()
1554 ctrl->handle = new_handle; in uvc_ctrl_set_handle()
1555 handle->pending_async_ctrls++; in uvc_ctrl_set_handle()
1560 if (WARN_ON(ctrl->handle != handle)) in uvc_ctrl_set_handle()
1563 ctrl->handle = NULL; in uvc_ctrl_set_handle()
1564 if (WARN_ON(!handle->pending_async_ctrls)) in uvc_ctrl_set_handle()
1566 handle->pending_async_ctrls--; in uvc_ctrl_set_handle()
1570 struct uvc_control *ctrl, const u8 *data) in uvc_ctrl_status_event() argument
1572 struct uvc_control_mapping *mapping; in uvc_ctrl_status_event() local
1576 mutex_lock(&chain->ctrl_mutex); in uvc_ctrl_status_event()
1578 handle = ctrl->handle; in uvc_ctrl_status_event()
1582 list_for_each_entry(mapping, &ctrl->info.mappings, list) { in uvc_ctrl_status_event()
1583 s32 value = __uvc_ctrl_get_value(mapping, data); in uvc_ctrl_status_event()
1586 * handle may be NULL here if the device sends auto-update in uvc_ctrl_status_event()
1589 for (i = 0; i < ARRAY_SIZE(mapping->slave_ids); ++i) { in uvc_ctrl_status_event()
1590 if (!mapping->slave_ids[i]) in uvc_ctrl_status_event()
1594 mapping->slave_ids[i]); in uvc_ctrl_status_event()
1597 uvc_ctrl_send_event(chain, handle, ctrl, mapping, value, in uvc_ctrl_status_event()
1601 mutex_unlock(&chain->ctrl_mutex); in uvc_ctrl_status_event()
1608 struct uvc_ctrl_work *w = &dev->async_ctrl; in uvc_ctrl_status_event_work()
1611 uvc_ctrl_status_event(w->chain, w->ctrl, w->data); in uvc_ctrl_status_event_work()
1614 if (smp_load_acquire(&dev->flush_status)) in uvc_ctrl_status_event_work()
1618 w->urb->interval = dev->int_ep->desc.bInterval; in uvc_ctrl_status_event_work()
1619 ret = usb_submit_urb(w->urb, GFP_KERNEL); in uvc_ctrl_status_event_work()
1621 dev_err(&dev->udev->dev, in uvc_ctrl_status_event_work()
1626 struct uvc_control *ctrl, const u8 *data) in uvc_ctrl_status_event_async() argument
1628 struct uvc_device *dev = chain->dev; in uvc_ctrl_status_event_async()
1629 struct uvc_ctrl_work *w = &dev->async_ctrl; in uvc_ctrl_status_event_async()
1631 if (list_empty(&ctrl->info.mappings)) in uvc_ctrl_status_event_async()
1634 w->data = data; in uvc_ctrl_status_event_async()
1635 w->urb = urb; in uvc_ctrl_status_event_async()
1636 w->chain = chain; in uvc_ctrl_status_event_async()
1637 w->ctrl = ctrl; in uvc_ctrl_status_event_async()
1639 schedule_work(&w->work); in uvc_ctrl_status_event_async()
1660 struct uvc_control_mapping *mapping; in uvc_ctrl_send_events() local
1668 ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping); in uvc_ctrl_send_events()
1669 if (ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS) in uvc_ctrl_send_events()
1673 for (j = 0; j < ARRAY_SIZE(mapping->slave_ids); ++j) { in uvc_ctrl_send_events()
1674 u32 slave_id = mapping->slave_ids[j]; in uvc_ctrl_send_events()
1687 uvc_ctrl_send_slave_event(handle->chain, handle, ctrl, in uvc_ctrl_send_events()
1695 if (mapping->master_id && in uvc_ctrl_send_events()
1697 mapping->master_id)) in uvc_ctrl_send_events()
1700 uvc_ctrl_send_event(handle->chain, handle, ctrl, mapping, in uvc_ctrl_send_events()
1707 struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh); in uvc_ctrl_add_event()
1708 struct uvc_control_mapping *mapping; in uvc_ctrl_add_event() local
1712 ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex); in uvc_ctrl_add_event()
1714 return -ERESTARTSYS; in uvc_ctrl_add_event()
1716 if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0) { in uvc_ctrl_add_event()
1721 ctrl = uvc_find_control(handle->chain, sev->id, &mapping); in uvc_ctrl_add_event()
1723 ret = -EINVAL; in uvc_ctrl_add_event()
1727 list_add_tail(&sev->node, &mapping->ev_subs); in uvc_ctrl_add_event()
1728 if (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL) { in uvc_ctrl_add_event()
1733 if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0) in uvc_ctrl_add_event()
1736 uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val, in uvc_ctrl_add_event()
1742 sev->elems = elems; in uvc_ctrl_add_event()
1743 v4l2_event_queue_fh(sev->fh, &ev); in uvc_ctrl_add_event()
1747 mutex_unlock(&handle->chain->ctrl_mutex); in uvc_ctrl_add_event()
1753 struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh); in uvc_ctrl_del_event()
1755 mutex_lock(&handle->chain->ctrl_mutex); in uvc_ctrl_del_event()
1756 if (__uvc_query_v4l2_class(handle->chain, sev->id, 0) >= 0) in uvc_ctrl_del_event()
1758 list_del(&sev->node); in uvc_ctrl_del_event()
1760 mutex_unlock(&handle->chain->ctrl_mutex); in uvc_ctrl_del_event()
1770 /* --------------------------------------------------------------------------
1779 * When setting a control, the new value is stored in the control data field
1782 * value is loaded from the hardware before storing the new value in the data
1789 * cleared. When reverting controls, the control data field
1796 return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0; in uvc_ctrl_begin()
1812 for (i = 0; i < entity->ncontrols; ++i) { in uvc_ctrl_commit_entity()
1813 ctrl = &entity->controls[i]; in uvc_ctrl_commit_entity()
1814 if (!ctrl->initialized) in uvc_ctrl_commit_entity()
1818 * Reset the loaded flag for auto-update controls that were in uvc_ctrl_commit_entity()
1820 * uvc_ctrl_get from using the cached value, and for write-only in uvc_ctrl_commit_entity()
1824 if (ctrl->info.flags & UVC_CTRL_FLAG_AUTO_UPDATE || in uvc_ctrl_commit_entity()
1825 !(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) in uvc_ctrl_commit_entity()
1826 ctrl->loaded = 0; in uvc_ctrl_commit_entity()
1828 if (!ctrl->dirty) in uvc_ctrl_commit_entity()
1832 ret = uvc_query_ctrl(dev, UVC_SET_CUR, ctrl->entity->id, in uvc_ctrl_commit_entity()
1833 dev->intfnum, ctrl->info.selector, in uvc_ctrl_commit_entity()
1835 ctrl->info.size); in uvc_ctrl_commit_entity()
1842 ctrl->info.size); in uvc_ctrl_commit_entity()
1844 ctrl->dirty = 0; in uvc_ctrl_commit_entity()
1853 ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS) in uvc_ctrl_commit_entity()
1864 struct uvc_control_mapping *mapping = NULL; in uvc_ctrl_find_ctrl_idx() local
1869 return ctrls->count; in uvc_ctrl_find_ctrl_idx()
1871 for (i = 0; i < ctrls->count; i++) { in uvc_ctrl_find_ctrl_idx()
1872 __uvc_find_control(entity, ctrls->controls[i].id, &mapping, in uvc_ctrl_find_ctrl_idx()
1878 return ctrls->count; in uvc_ctrl_find_ctrl_idx()
1884 struct uvc_video_chain *chain = handle->chain; in __uvc_ctrl_commit()
1890 list_for_each_entry(entity, &chain->entities, chain) { in __uvc_ctrl_commit()
1891 ret = uvc_ctrl_commit_entity(chain->dev, handle, entity, in __uvc_ctrl_commit()
1895 ctrls->error_idx = in __uvc_ctrl_commit()
1903 uvc_ctrl_send_events(handle, ctrls->controls, ctrls->count); in __uvc_ctrl_commit()
1905 mutex_unlock(&chain->ctrl_mutex); in __uvc_ctrl_commit()
1913 struct uvc_control_mapping *mapping; in uvc_ctrl_get() local
1915 if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0) in uvc_ctrl_get()
1916 return -EACCES; in uvc_ctrl_get()
1918 ctrl = uvc_find_control(chain, xctrl->id, &mapping); in uvc_ctrl_get()
1920 return -EINVAL; in uvc_ctrl_get()
1922 return __uvc_ctrl_get(chain, ctrl, mapping, &xctrl->value); in uvc_ctrl_get()
1928 struct uvc_video_chain *chain = handle->chain; in uvc_ctrl_set()
1930 struct uvc_control_mapping *mapping; in uvc_ctrl_set() local
1937 if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0) in uvc_ctrl_set()
1938 return -EACCES; in uvc_ctrl_set()
1940 ctrl = uvc_find_control(chain, xctrl->id, &mapping); in uvc_ctrl_set()
1942 return -EINVAL; in uvc_ctrl_set()
1943 if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR)) in uvc_ctrl_set()
1944 return -EACCES; in uvc_ctrl_set()
1947 switch (mapping->v4l2_type) { in uvc_ctrl_set()
1949 if (!ctrl->cached) { in uvc_ctrl_set()
1955 min = mapping->get(mapping, UVC_GET_MIN, in uvc_ctrl_set()
1957 max = mapping->get(mapping, UVC_GET_MAX, in uvc_ctrl_set()
1959 step = mapping->get(mapping, UVC_GET_RES, in uvc_ctrl_set()
1964 xctrl->value = min + DIV_ROUND_CLOSEST((u32)(xctrl->value - min), in uvc_ctrl_set()
1966 if (mapping->data_type == UVC_CTRL_DATA_TYPE_SIGNED) in uvc_ctrl_set()
1967 xctrl->value = clamp(xctrl->value, min, max); in uvc_ctrl_set()
1969 xctrl->value = clamp_t(u32, xctrl->value, min, max); in uvc_ctrl_set()
1970 value = xctrl->value; in uvc_ctrl_set()
1974 if (!ctrl->cached) { in uvc_ctrl_set()
1980 xctrl->value &= uvc_get_ctrl_bitmap(ctrl, mapping); in uvc_ctrl_set()
1981 value = xctrl->value; in uvc_ctrl_set()
1985 xctrl->value = clamp(xctrl->value, 0, 1); in uvc_ctrl_set()
1986 value = xctrl->value; in uvc_ctrl_set()
1990 if (xctrl->value < (ffs(mapping->menu_mask) - 1) || in uvc_ctrl_set()
1991 xctrl->value > (fls(mapping->menu_mask) - 1)) in uvc_ctrl_set()
1992 return -ERANGE; in uvc_ctrl_set()
1994 if (!test_bit(xctrl->value, &mapping->menu_mask)) in uvc_ctrl_set()
1995 return -EINVAL; in uvc_ctrl_set()
1997 value = uvc_mapping_get_menu_value(mapping, xctrl->value); in uvc_ctrl_set()
2003 if (mapping->data_type == UVC_CTRL_DATA_TYPE_BITMASK) { in uvc_ctrl_set()
2004 if (!ctrl->cached) { in uvc_ctrl_set()
2010 if (!(uvc_get_ctrl_bitmap(ctrl, mapping) & value)) in uvc_ctrl_set()
2011 return -EINVAL; in uvc_ctrl_set()
2017 value = xctrl->value; in uvc_ctrl_set()
2022 * If the mapping doesn't span the whole UVC control, the current value in uvc_ctrl_set()
2023 * needs to be loaded from the device to perform the read-modify-write in uvc_ctrl_set()
2026 if ((ctrl->info.size * 8) != mapping->size) { in uvc_ctrl_set()
2033 if (!ctrl->dirty) { in uvc_ctrl_set()
2036 ctrl->info.size); in uvc_ctrl_set()
2039 mapping->set(mapping, value, in uvc_ctrl_set()
2042 ctrl->dirty = 1; in uvc_ctrl_set()
2043 ctrl->modified = 1; in uvc_ctrl_set()
2047 /* --------------------------------------------------------------------------
2058 u8 *data; in uvc_ctrl_get_flags() local
2061 data = kmalloc(1, GFP_KERNEL); in uvc_ctrl_get_flags()
2062 if (data == NULL) in uvc_ctrl_get_flags()
2063 return -ENOMEM; in uvc_ctrl_get_flags()
2065 if (ctrl->entity->get_info) in uvc_ctrl_get_flags()
2066 ret = ctrl->entity->get_info(dev, ctrl->entity, in uvc_ctrl_get_flags()
2067 ctrl->info.selector, data); in uvc_ctrl_get_flags()
2069 ret = uvc_query_ctrl(dev, UVC_GET_INFO, ctrl->entity->id, in uvc_ctrl_get_flags()
2070 dev->intfnum, info->selector, data, 1); in uvc_ctrl_get_flags()
2073 info->flags &= ~(UVC_CTRL_FLAG_GET_CUR | in uvc_ctrl_get_flags()
2078 info->flags |= (data[0] & UVC_CONTROL_CAP_GET ? in uvc_ctrl_get_flags()
2080 | (data[0] & UVC_CONTROL_CAP_SET ? in uvc_ctrl_get_flags()
2082 | (data[0] & UVC_CONTROL_CAP_AUTOUPDATE ? in uvc_ctrl_get_flags()
2084 | (data[0] & UVC_CONTROL_CAP_ASYNCHRONOUS ? in uvc_ctrl_get_flags()
2088 kfree(data); in uvc_ctrl_get_flags()
2120 if (!usb_match_one_id(dev->intf, &fixups[i].id)) in uvc_ctrl_fixup_xu_info()
2123 if (fixups[i].entity == ctrl->entity->id && in uvc_ctrl_fixup_xu_info()
2124 fixups[i].selector == info->selector) { in uvc_ctrl_fixup_xu_info()
2125 info->flags = fixups[i].flags; in uvc_ctrl_fixup_xu_info()
2137 u8 *data; in uvc_ctrl_fill_xu_info() local
2140 data = kmalloc(2, GFP_KERNEL); in uvc_ctrl_fill_xu_info()
2141 if (data == NULL) in uvc_ctrl_fill_xu_info()
2142 return -ENOMEM; in uvc_ctrl_fill_xu_info()
2144 memcpy(info->entity, ctrl->entity->guid, sizeof(info->entity)); in uvc_ctrl_fill_xu_info()
2145 info->index = ctrl->index; in uvc_ctrl_fill_xu_info()
2146 info->selector = ctrl->index + 1; in uvc_ctrl_fill_xu_info()
2149 ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum, in uvc_ctrl_fill_xu_info()
2150 info->selector, data, 2); in uvc_ctrl_fill_xu_info()
2154 info->entity, info->selector, ret); in uvc_ctrl_fill_xu_info()
2158 info->size = le16_to_cpup((__le16 *)data); in uvc_ctrl_fill_xu_info()
2160 info->flags = UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX in uvc_ctrl_fill_xu_info()
2167 info->entity, info->selector, ret); in uvc_ctrl_fill_xu_info()
2175 info->entity, info->selector, info->size, in uvc_ctrl_fill_xu_info()
2176 (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0, in uvc_ctrl_fill_xu_info()
2177 (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0, in uvc_ctrl_fill_xu_info()
2178 (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0); in uvc_ctrl_fill_xu_info()
2181 kfree(data); in uvc_ctrl_fill_xu_info()
2194 if (ctrl->initialized) in uvc_ctrl_init_xu_ctrl()
2205 info.entity, info.selector, dev->udev->devpath, in uvc_ctrl_init_xu_ctrl()
2206 ctrl->entity->id); in uvc_ctrl_init_xu_ctrl()
2220 u8 *data = NULL; in uvc_xu_ctrl_query() local
2225 list_for_each_entry(iter, &chain->entities, chain) { in uvc_xu_ctrl_query()
2227 iter->id == xqry->unit) { in uvc_xu_ctrl_query()
2234 uvc_dbg(chain->dev, CONTROL, "Extension unit %u not found\n", in uvc_xu_ctrl_query()
2235 xqry->unit); in uvc_xu_ctrl_query()
2236 return -ENOENT; in uvc_xu_ctrl_query()
2241 for (i = 0; i < entity->ncontrols; ++i) { in uvc_xu_ctrl_query()
2242 ctrl = &entity->controls[i]; in uvc_xu_ctrl_query()
2243 if (ctrl->index == xqry->selector - 1) { in uvc_xu_ctrl_query()
2250 uvc_dbg(chain->dev, CONTROL, "Control %pUl/%u not found\n", in uvc_xu_ctrl_query()
2251 entity->guid, xqry->selector); in uvc_xu_ctrl_query()
2252 return -ENOENT; in uvc_xu_ctrl_query()
2255 if (mutex_lock_interruptible(&chain->ctrl_mutex)) in uvc_xu_ctrl_query()
2256 return -ERESTARTSYS; in uvc_xu_ctrl_query()
2258 ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl); in uvc_xu_ctrl_query()
2260 ret = -ENOENT; in uvc_xu_ctrl_query()
2266 size = ctrl->info.size; in uvc_xu_ctrl_query()
2268 switch (xqry->query) { in uvc_xu_ctrl_query()
2294 ret = -EINVAL; in uvc_xu_ctrl_query()
2298 if (size != xqry->size) { in uvc_xu_ctrl_query()
2299 ret = -ENOBUFS; in uvc_xu_ctrl_query()
2303 if (reqflags && !(ctrl->info.flags & reqflags)) { in uvc_xu_ctrl_query()
2304 ret = -EBADRQC; in uvc_xu_ctrl_query()
2308 data = kmalloc(size, GFP_KERNEL); in uvc_xu_ctrl_query()
2309 if (data == NULL) { in uvc_xu_ctrl_query()
2310 ret = -ENOMEM; in uvc_xu_ctrl_query()
2314 if (xqry->query == UVC_SET_CUR && in uvc_xu_ctrl_query()
2315 copy_from_user(data, xqry->data, size)) { in uvc_xu_ctrl_query()
2316 ret = -EFAULT; in uvc_xu_ctrl_query()
2320 ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit, in uvc_xu_ctrl_query()
2321 chain->dev->intfnum, xqry->selector, data, size); in uvc_xu_ctrl_query()
2325 if (xqry->query != UVC_SET_CUR && in uvc_xu_ctrl_query()
2326 copy_to_user(xqry->data, data, size)) in uvc_xu_ctrl_query()
2327 ret = -EFAULT; in uvc_xu_ctrl_query()
2329 kfree(data); in uvc_xu_ctrl_query()
2330 mutex_unlock(&chain->ctrl_mutex); in uvc_xu_ctrl_query()
2334 /* --------------------------------------------------------------------------
2343 * - Don't restore modified controls that are back to their default value.
2344 * - Handle restore order (Auto-Exposure Mode should be restored before
2355 list_for_each_entry(entity, &dev->entities, list) { in uvc_ctrl_restore_values()
2357 for (i = 0; i < entity->ncontrols; ++i) { in uvc_ctrl_restore_values()
2358 ctrl = &entity->controls[i]; in uvc_ctrl_restore_values()
2360 if (!ctrl->initialized || !ctrl->modified || in uvc_ctrl_restore_values()
2361 (ctrl->info.flags & UVC_CTRL_FLAG_RESTORE) == 0) in uvc_ctrl_restore_values()
2363 dev_dbg(&dev->udev->dev, in uvc_ctrl_restore_values()
2365 ctrl->info.entity, ctrl->info.index, in uvc_ctrl_restore_values()
2366 ctrl->info.selector); in uvc_ctrl_restore_values()
2367 ctrl->dirty = 1; in uvc_ctrl_restore_values()
2378 /* --------------------------------------------------------------------------
2379 * Control and mapping handling
2388 ctrl->info = *info; in uvc_ctrl_add_info()
2389 INIT_LIST_HEAD(&ctrl->info.mappings); in uvc_ctrl_add_info()
2392 ctrl->uvc_data = kzalloc(ctrl->info.size * UVC_CTRL_DATA_LAST + 1, in uvc_ctrl_add_info()
2394 if (!ctrl->uvc_data) in uvc_ctrl_add_info()
2395 return -ENOMEM; in uvc_ctrl_add_info()
2397 ctrl->initialized = 1; in uvc_ctrl_add_info()
2400 ctrl->info.entity, ctrl->info.selector, dev->udev->devpath, in uvc_ctrl_add_info()
2401 ctrl->entity->id); in uvc_ctrl_add_info()
2407 * Add a control mapping to a given control.
2410 struct uvc_control *ctrl, const struct uvc_control_mapping *mapping) in __uvc_ctrl_add_mapping() argument
2417 * Most mappings come from static kernel data, and need to be duplicated. in __uvc_ctrl_add_mapping()
2421 map = kmemdup(mapping, sizeof(*mapping), GFP_KERNEL); in __uvc_ctrl_add_mapping()
2423 return -ENOMEM; in __uvc_ctrl_add_mapping()
2425 map->name = NULL; in __uvc_ctrl_add_mapping()
2426 map->menu_names = NULL; in __uvc_ctrl_add_mapping()
2427 map->menu_mapping = NULL; in __uvc_ctrl_add_mapping()
2430 if (mapping->name) { in __uvc_ctrl_add_mapping()
2431 map->name = kstrdup(mapping->name, GFP_KERNEL); in __uvc_ctrl_add_mapping()
2432 if (!map->name) in __uvc_ctrl_add_mapping()
2436 INIT_LIST_HEAD(&map->ev_subs); in __uvc_ctrl_add_mapping()
2438 if (mapping->menu_mapping && mapping->menu_mask) { in __uvc_ctrl_add_mapping()
2439 size = sizeof(mapping->menu_mapping[0]) in __uvc_ctrl_add_mapping()
2440 * fls(mapping->menu_mask); in __uvc_ctrl_add_mapping()
2441 map->menu_mapping = kmemdup(mapping->menu_mapping, size, in __uvc_ctrl_add_mapping()
2443 if (!map->menu_mapping) in __uvc_ctrl_add_mapping()
2446 if (mapping->menu_names && mapping->menu_mask) { in __uvc_ctrl_add_mapping()
2447 size = sizeof(mapping->menu_names[0]) in __uvc_ctrl_add_mapping()
2448 * fls(mapping->menu_mask); in __uvc_ctrl_add_mapping()
2449 map->menu_names = kmemdup(mapping->menu_names, size, in __uvc_ctrl_add_mapping()
2451 if (!map->menu_names) in __uvc_ctrl_add_mapping()
2455 if (map->get == NULL) in __uvc_ctrl_add_mapping()
2456 map->get = uvc_get_le_value; in __uvc_ctrl_add_mapping()
2457 if (map->set == NULL) in __uvc_ctrl_add_mapping()
2458 map->set = uvc_set_le_value; in __uvc_ctrl_add_mapping()
2462 V4L2_CTRL_ID2WHICH(map->id)) { in __uvc_ctrl_add_mapping()
2463 chain->ctrl_class_bitmap |= BIT(i); in __uvc_ctrl_add_mapping()
2468 list_add_tail(&map->list, &ctrl->info.mappings); in __uvc_ctrl_add_mapping()
2469 uvc_dbg(chain->dev, CONTROL, "Adding mapping '%s' to control %pUl/%u\n", in __uvc_ctrl_add_mapping()
2470 uvc_map_get_name(map), ctrl->info.entity, in __uvc_ctrl_add_mapping()
2471 ctrl->info.selector); in __uvc_ctrl_add_mapping()
2476 kfree(map->menu_names); in __uvc_ctrl_add_mapping()
2477 kfree(map->menu_mapping); in __uvc_ctrl_add_mapping()
2478 kfree(map->name); in __uvc_ctrl_add_mapping()
2480 return -ENOMEM; in __uvc_ctrl_add_mapping()
2484 const struct uvc_control_mapping *mapping) in uvc_ctrl_add_mapping() argument
2486 struct uvc_device *dev = chain->dev; in uvc_ctrl_add_mapping()
2493 if (mapping->id & ~V4L2_CTRL_ID_MASK) { in uvc_ctrl_add_mapping()
2495 "Can't add mapping '%s', control id 0x%08x is invalid\n", in uvc_ctrl_add_mapping()
2496 uvc_map_get_name(mapping), mapping->id); in uvc_ctrl_add_mapping()
2497 return -EINVAL; in uvc_ctrl_add_mapping()
2501 list_for_each_entry(entity, &chain->entities, chain) { in uvc_ctrl_add_mapping()
2505 !uvc_entity_match_guid(entity, mapping->entity)) in uvc_ctrl_add_mapping()
2508 for (i = 0; i < entity->ncontrols; ++i) { in uvc_ctrl_add_mapping()
2509 ctrl = &entity->controls[i]; in uvc_ctrl_add_mapping()
2510 if (ctrl->index == mapping->selector - 1) { in uvc_ctrl_add_mapping()
2520 return -ENOENT; in uvc_ctrl_add_mapping()
2522 if (mutex_lock_interruptible(&chain->ctrl_mutex)) in uvc_ctrl_add_mapping()
2523 return -ERESTARTSYS; in uvc_ctrl_add_mapping()
2528 ret = -ENOENT; in uvc_ctrl_add_mapping()
2532 /* Validate the user-provided bit-size and offset */ in uvc_ctrl_add_mapping()
2533 if (mapping->size > 32 || in uvc_ctrl_add_mapping()
2534 mapping->offset + mapping->size > ctrl->info.size * 8) { in uvc_ctrl_add_mapping()
2535 ret = -EINVAL; in uvc_ctrl_add_mapping()
2539 list_for_each_entry(map, &ctrl->info.mappings, list) { in uvc_ctrl_add_mapping()
2540 if (mapping->id == map->id) { in uvc_ctrl_add_mapping()
2542 "Can't add mapping '%s', control id 0x%08x already exists\n", in uvc_ctrl_add_mapping()
2543 uvc_map_get_name(mapping), mapping->id); in uvc_ctrl_add_mapping()
2544 ret = -EEXIST; in uvc_ctrl_add_mapping()
2550 if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) { in uvc_ctrl_add_mapping()
2551 atomic_dec(&dev->nmappings); in uvc_ctrl_add_mapping()
2553 "Can't add mapping '%s', maximum mappings count (%u) exceeded\n", in uvc_ctrl_add_mapping()
2554 uvc_map_get_name(mapping), UVC_MAX_CONTROL_MAPPINGS); in uvc_ctrl_add_mapping()
2555 ret = -ENOMEM; in uvc_ctrl_add_mapping()
2559 ret = __uvc_ctrl_add_mapping(chain, ctrl, mapping); in uvc_ctrl_add_mapping()
2561 atomic_dec(&dev->nmappings); in uvc_ctrl_add_mapping()
2564 mutex_unlock(&chain->ctrl_mutex); in uvc_ctrl_add_mapping()
2600 controls = entity->processing.bmControls; in uvc_ctrl_prune_entity()
2601 size = entity->processing.bControlSize; in uvc_ctrl_prune_entity()
2607 controls = entity->camera.bmControls; in uvc_ctrl_prune_entity()
2608 size = entity->camera.bControlSize; in uvc_ctrl_prune_entity()
2616 if (!usb_match_one_id(dev->intf, &blacklist[i].id)) in uvc_ctrl_prune_entity()
2625 entity->id, blacklist[i].index); in uvc_ctrl_prune_entity()
2647 if (UVC_ENTITY_TYPE(ctrl->entity) == UVC_VC_EXTENSION_UNIT) in uvc_ctrl_init_ctrl()
2653 if (uvc_entity_match_guid(ctrl->entity, info->entity) && in uvc_ctrl_init_ctrl()
2654 ctrl->index == info->index) { in uvc_ctrl_init_ctrl()
2655 uvc_ctrl_add_info(chain->dev, ctrl, info); in uvc_ctrl_init_ctrl()
2662 uvc_ctrl_get_flags(chain->dev, ctrl, &ctrl->info); in uvc_ctrl_init_ctrl()
2667 if (!ctrl->initialized) in uvc_ctrl_init_ctrl()
2671 * First check if the device provides a custom mapping for this control, in uvc_ctrl_init_ctrl()
2672 * used to override standard mappings for non-conformant devices. Don't in uvc_ctrl_init_ctrl()
2673 * process standard mappings if a custom mapping is found. This in uvc_ctrl_init_ctrl()
2677 if (chain->dev->info->mappings) { in uvc_ctrl_init_ctrl()
2680 for (i = 0; chain->dev->info->mappings[i]; ++i) { in uvc_ctrl_init_ctrl()
2681 const struct uvc_control_mapping *mapping = in uvc_ctrl_init_ctrl() local
2682 chain->dev->info->mappings[i]; in uvc_ctrl_init_ctrl()
2684 if (uvc_entity_match_guid(ctrl->entity, mapping->entity) && in uvc_ctrl_init_ctrl()
2685 ctrl->info.selector == mapping->selector) { in uvc_ctrl_init_ctrl()
2686 __uvc_ctrl_add_mapping(chain, ctrl, mapping); in uvc_ctrl_init_ctrl()
2697 const struct uvc_control_mapping *mapping = &uvc_ctrl_mappings[i]; in uvc_ctrl_init_ctrl() local
2699 if (uvc_entity_match_guid(ctrl->entity, mapping->entity) && in uvc_ctrl_init_ctrl()
2700 ctrl->info.selector == mapping->selector) in uvc_ctrl_init_ctrl()
2701 __uvc_ctrl_add_mapping(chain, ctrl, mapping); in uvc_ctrl_init_ctrl()
2704 /* Finally process version-specific mappings. */ in uvc_ctrl_init_ctrl()
2705 mappings = chain->dev->uvc_version < 0x0150 in uvc_ctrl_init_ctrl()
2709 const struct uvc_control_mapping *mapping = mappings[i]; in uvc_ctrl_init_ctrl() local
2711 if (uvc_entity_match_guid(ctrl->entity, mapping->entity) && in uvc_ctrl_init_ctrl()
2712 ctrl->info.selector == mapping->selector) in uvc_ctrl_init_ctrl()
2713 __uvc_ctrl_add_mapping(chain, ctrl, mapping); in uvc_ctrl_init_ctrl()
2726 list_for_each_entry(entity, &chain->entities, chain) { in uvc_ctrl_init_chain()
2732 bmControls = entity->extension.bmControls; in uvc_ctrl_init_chain()
2733 bControlSize = entity->extension.bControlSize; in uvc_ctrl_init_chain()
2735 bmControls = entity->processing.bmControls; in uvc_ctrl_init_chain()
2736 bControlSize = entity->processing.bControlSize; in uvc_ctrl_init_chain()
2738 bmControls = entity->camera.bmControls; in uvc_ctrl_init_chain()
2739 bControlSize = entity->camera.bControlSize; in uvc_ctrl_init_chain()
2741 bmControls = entity->gpio.bmControls; in uvc_ctrl_init_chain()
2742 bControlSize = entity->gpio.bControlSize; in uvc_ctrl_init_chain()
2746 uvc_ctrl_prune_entity(chain->dev, entity); in uvc_ctrl_init_chain()
2753 entity->controls = kcalloc(ncontrols, sizeof(*ctrl), in uvc_ctrl_init_chain()
2755 if (entity->controls == NULL) in uvc_ctrl_init_chain()
2756 return -ENOMEM; in uvc_ctrl_init_chain()
2757 entity->ncontrols = ncontrols; in uvc_ctrl_init_chain()
2760 ctrl = entity->controls; in uvc_ctrl_init_chain()
2765 ctrl->entity = entity; in uvc_ctrl_init_chain()
2766 ctrl->index = i; in uvc_ctrl_init_chain()
2781 INIT_WORK(&dev->async_ctrl.work, uvc_ctrl_status_event_work); in uvc_ctrl_init_device()
2783 list_for_each_entry(chain, &dev->chains, list) { in uvc_ctrl_init_device()
2796 guard(mutex)(&handle->chain->ctrl_mutex); in uvc_ctrl_cleanup_fh()
2798 if (!handle->pending_async_ctrls) in uvc_ctrl_cleanup_fh()
2801 list_for_each_entry(entity, &handle->chain->dev->entities, list) { in uvc_ctrl_cleanup_fh()
2802 for (unsigned int i = 0; i < entity->ncontrols; ++i) { in uvc_ctrl_cleanup_fh()
2803 if (entity->controls[i].handle != handle) in uvc_ctrl_cleanup_fh()
2805 uvc_ctrl_set_handle(handle, &entity->controls[i], NULL); in uvc_ctrl_cleanup_fh()
2809 WARN_ON(handle->pending_async_ctrls); in uvc_ctrl_cleanup_fh()
2818 struct uvc_control_mapping *mapping, *nm; in uvc_ctrl_cleanup_mappings() local
2820 list_for_each_entry_safe(mapping, nm, &ctrl->info.mappings, list) { in uvc_ctrl_cleanup_mappings()
2821 list_del(&mapping->list); in uvc_ctrl_cleanup_mappings()
2822 kfree(mapping->menu_names); in uvc_ctrl_cleanup_mappings()
2823 kfree(mapping->menu_mapping); in uvc_ctrl_cleanup_mappings()
2824 kfree(mapping->name); in uvc_ctrl_cleanup_mappings()
2825 kfree(mapping); in uvc_ctrl_cleanup_mappings()
2835 if (dev->async_ctrl.work.func) in uvc_ctrl_cleanup_device()
2836 cancel_work_sync(&dev->async_ctrl.work); in uvc_ctrl_cleanup_device()
2839 list_for_each_entry(entity, &dev->entities, list) { in uvc_ctrl_cleanup_device()
2840 for (i = 0; i < entity->ncontrols; ++i) { in uvc_ctrl_cleanup_device()
2841 struct uvc_control *ctrl = &entity->controls[i]; in uvc_ctrl_cleanup_device()
2843 if (!ctrl->initialized) in uvc_ctrl_cleanup_device()
2847 kfree(ctrl->uvc_data); in uvc_ctrl_cleanup_device()
2850 kfree(entity->controls); in uvc_ctrl_cleanup_device()