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
20 #include <media/v4l2-ctrls.h>
32 /* ------------------------------------------------------------------------
365 static s32 uvc_ctrl_get_zoom(struct uvc_control_mapping *mapping, in uvc_ctrl_get_zoom() argument
366 u8 query, const u8 *data) in uvc_ctrl_get_zoom() argument
368 s8 zoom = (s8)data[0]; in uvc_ctrl_get_zoom()
372 return (zoom == 0) ? 0 : (zoom > 0 ? data[2] : -data[2]); in uvc_ctrl_get_zoom()
379 return data[2]; in uvc_ctrl_get_zoom()
383 static void uvc_ctrl_set_zoom(struct uvc_control_mapping *mapping, in uvc_ctrl_set_zoom() argument
384 s32 value, u8 *data) in uvc_ctrl_set_zoom() argument
386 data[0] = value == 0 ? 0 : (value > 0) ? 1 : 0xff; in uvc_ctrl_set_zoom()
387 data[2] = min((int)abs(value), 0xff); in uvc_ctrl_set_zoom()
390 static s32 uvc_ctrl_get_rel_speed(struct uvc_control_mapping *mapping, in uvc_ctrl_get_rel_speed() argument
391 u8 query, const u8 *data) in uvc_ctrl_get_rel_speed() argument
393 unsigned int first = mapping->offset / 8; in uvc_ctrl_get_rel_speed()
394 s8 rel = (s8)data[first]; in uvc_ctrl_get_rel_speed()
398 return (rel == 0) ? 0 : (rel > 0 ? data[first+1] in uvc_ctrl_get_rel_speed()
399 : -data[first+1]); in uvc_ctrl_get_rel_speed()
401 return -data[first+1]; in uvc_ctrl_get_rel_speed()
406 return data[first+1]; in uvc_ctrl_get_rel_speed()
410 static void uvc_ctrl_set_rel_speed(struct uvc_control_mapping *mapping, in uvc_ctrl_set_rel_speed() argument
411 s32 value, u8 *data) in uvc_ctrl_set_rel_speed() argument
413 unsigned int first = mapping->offset / 8; in uvc_ctrl_set_rel_speed()
415 data[first] = value == 0 ? 0 : (value > 0) ? 1 : 0xff; in uvc_ctrl_set_rel_speed()
416 data[first+1] = min_t(int, abs(value), 0xff); in uvc_ctrl_set_rel_speed()
740 /* ------------------------------------------------------------------------
746 return ctrl->uvc_data + id * ctrl->info.size; in uvc_ctrl_data()
749 static inline int uvc_test_bit(const u8 *data, int bit) in uvc_test_bit() argument
751 return (data[bit >> 3] >> (bit & 7)) & 1; in uvc_test_bit()
754 static inline void uvc_clear_bit(u8 *data, int bit) in uvc_clear_bit() argument
756 data[bit >> 3] &= ~(1 << (bit & 7)); in uvc_clear_bit()
759 /* Extract the bit string specified by mapping->offset and mapping->size
760 * from the little-endian data stored at 'data' and return the result as
761 * a signed 32bit integer. Sign extension will be performed if the mapping
762 * references a signed data type.
764 static s32 uvc_get_le_value(struct uvc_control_mapping *mapping, in uvc_get_le_value() argument
765 u8 query, const u8 *data) in uvc_get_le_value() argument
767 int bits = mapping->size; in uvc_get_le_value()
768 int offset = mapping->offset; in uvc_get_le_value()
772 data += offset / 8; in uvc_get_le_value()
774 mask = ((1LL << bits) - 1) << offset; in uvc_get_le_value()
777 u8 byte = *data & mask; in uvc_get_le_value()
778 value |= offset > 0 ? (byte >> offset) : (byte << (-offset)); in uvc_get_le_value()
779 bits -= 8 - (offset > 0 ? offset : 0); in uvc_get_le_value()
783 offset -= 8; in uvc_get_le_value()
784 mask = (1 << bits) - 1; in uvc_get_le_value()
785 data++; in uvc_get_le_value()
788 /* Sign-extend the value if needed. */ in uvc_get_le_value()
789 if (mapping->data_type == UVC_CTRL_DATA_TYPE_SIGNED) in uvc_get_le_value()
790 value |= -(value & (1 << (mapping->size - 1))); in uvc_get_le_value()
795 /* Set the bit string specified by mapping->offset and mapping->size
796 * in the little-endian data stored at 'data' to the value 'value'.
798 static void uvc_set_le_value(struct uvc_control_mapping *mapping, in uvc_set_le_value() argument
799 s32 value, u8 *data) in uvc_set_le_value() argument
801 int bits = mapping->size; in uvc_set_le_value()
802 int offset = mapping->offset; in uvc_set_le_value()
807 * triggered. UVC devices however want to see a 1 written -> override in uvc_set_le_value()
810 if (mapping->v4l2_type == V4L2_CTRL_TYPE_BUTTON) in uvc_set_le_value()
811 value = -1; in uvc_set_le_value()
813 data += offset / 8; in uvc_set_le_value()
816 for (; bits > 0; data++) { in uvc_set_le_value()
817 mask = ((1LL << bits) - 1) << offset; in uvc_set_le_value()
818 *data = (*data & ~mask) | ((value << offset) & mask); in uvc_set_le_value()
820 bits -= 8 - offset; in uvc_set_le_value()
825 /* ------------------------------------------------------------------------
848 return memcmp(entity->extension.guidExtensionCode, in uvc_entity_match_guid()
856 /* ------------------------------------------------------------------------
861 struct uvc_control_mapping **mapping, struct uvc_control **control, in __uvc_find_control() argument
871 for (i = 0; i < entity->ncontrols; ++i) { in __uvc_find_control()
872 ctrl = &entity->controls[i]; in __uvc_find_control()
873 if (!ctrl->initialized) in __uvc_find_control()
876 list_for_each_entry(map, &ctrl->info.mappings, list) { in __uvc_find_control()
877 if ((map->id == v4l2_id) && !next) { in __uvc_find_control()
879 *mapping = map; in __uvc_find_control()
883 if ((*mapping == NULL || (*mapping)->id > map->id) && in __uvc_find_control()
884 (map->id > v4l2_id) && next) { in __uvc_find_control()
886 *mapping = map; in __uvc_find_control()
893 u32 v4l2_id, struct uvc_control_mapping **mapping) in uvc_find_control() argument
899 *mapping = NULL; in uvc_find_control()
905 list_for_each_entry(entity, &chain->entities, chain) { in uvc_find_control()
906 __uvc_find_control(entity, v4l2_id, mapping, &ctrl, next); in uvc_find_control()
923 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_DEF) { in uvc_ctrl_populate_cache()
924 ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id, in uvc_ctrl_populate_cache()
925 chain->dev->intfnum, ctrl->info.selector, in uvc_ctrl_populate_cache()
927 ctrl->info.size); in uvc_ctrl_populate_cache()
932 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) { in uvc_ctrl_populate_cache()
933 ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id, in uvc_ctrl_populate_cache()
934 chain->dev->intfnum, ctrl->info.selector, in uvc_ctrl_populate_cache()
936 ctrl->info.size); in uvc_ctrl_populate_cache()
940 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) { in uvc_ctrl_populate_cache()
941 ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id, in uvc_ctrl_populate_cache()
942 chain->dev->intfnum, ctrl->info.selector, in uvc_ctrl_populate_cache()
944 ctrl->info.size); in uvc_ctrl_populate_cache()
948 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) { in uvc_ctrl_populate_cache()
949 ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id, in uvc_ctrl_populate_cache()
950 chain->dev->intfnum, ctrl->info.selector, in uvc_ctrl_populate_cache()
952 ctrl->info.size); in uvc_ctrl_populate_cache()
954 if (UVC_ENTITY_TYPE(ctrl->entity) != in uvc_ctrl_populate_cache()
962 uvc_warn_once(chain->dev, UVC_WARN_XU_GET_RES, in uvc_ctrl_populate_cache()
963 "UVC non compliance - GET_RES failed on " in uvc_ctrl_populate_cache()
966 ctrl->info.size); in uvc_ctrl_populate_cache()
970 ctrl->cached = 1; in uvc_ctrl_populate_cache()
974 static s32 __uvc_ctrl_get_value(struct uvc_control_mapping *mapping, in __uvc_ctrl_get_value() argument
975 const u8 *data) in __uvc_ctrl_get_value() argument
977 s32 value = mapping->get(mapping, UVC_GET_CUR, data); in __uvc_ctrl_get_value()
979 if (mapping->v4l2_type == V4L2_CTRL_TYPE_MENU) { in __uvc_ctrl_get_value()
980 const struct uvc_menu_info *menu = mapping->menu_info; in __uvc_ctrl_get_value()
983 for (i = 0; i < mapping->menu_count; ++i, ++menu) { in __uvc_ctrl_get_value()
984 if (menu->value == value) { in __uvc_ctrl_get_value()
995 struct uvc_control *ctrl, struct uvc_control_mapping *mapping, in __uvc_ctrl_get() argument
1000 if ((ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) == 0) in __uvc_ctrl_get()
1001 return -EACCES; in __uvc_ctrl_get()
1003 if (!ctrl->loaded) { in __uvc_ctrl_get()
1004 ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, ctrl->entity->id, in __uvc_ctrl_get()
1005 chain->dev->intfnum, ctrl->info.selector, in __uvc_ctrl_get()
1007 ctrl->info.size); in __uvc_ctrl_get()
1011 ctrl->loaded = 1; in __uvc_ctrl_get()
1014 *value = __uvc_ctrl_get_value(mapping, in __uvc_ctrl_get()
1022 struct uvc_control_mapping *mapping, in __uvc_query_v4l2_ctrl() argument
1031 v4l2_ctrl->id = mapping->id; in __uvc_query_v4l2_ctrl()
1032 v4l2_ctrl->type = mapping->v4l2_type; in __uvc_query_v4l2_ctrl()
1033 strscpy(v4l2_ctrl->name, mapping->name, sizeof(v4l2_ctrl->name)); in __uvc_query_v4l2_ctrl()
1034 v4l2_ctrl->flags = 0; in __uvc_query_v4l2_ctrl()
1036 if (!(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) in __uvc_query_v4l2_ctrl()
1037 v4l2_ctrl->flags |= V4L2_CTRL_FLAG_WRITE_ONLY; in __uvc_query_v4l2_ctrl()
1038 if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR)) in __uvc_query_v4l2_ctrl()
1039 v4l2_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY; in __uvc_query_v4l2_ctrl()
1041 if (mapping->master_id) in __uvc_query_v4l2_ctrl()
1042 __uvc_find_control(ctrl->entity, mapping->master_id, in __uvc_query_v4l2_ctrl()
1044 if (master_ctrl && (master_ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) { in __uvc_query_v4l2_ctrl()
1050 if (val != mapping->master_manual) in __uvc_query_v4l2_ctrl()
1051 v4l2_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; in __uvc_query_v4l2_ctrl()
1054 if (!ctrl->cached) { in __uvc_query_v4l2_ctrl()
1060 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_DEF) { in __uvc_query_v4l2_ctrl()
1061 v4l2_ctrl->default_value = mapping->get(mapping, UVC_GET_DEF, in __uvc_query_v4l2_ctrl()
1065 switch (mapping->v4l2_type) { in __uvc_query_v4l2_ctrl()
1067 v4l2_ctrl->minimum = 0; in __uvc_query_v4l2_ctrl()
1068 v4l2_ctrl->maximum = mapping->menu_count - 1; in __uvc_query_v4l2_ctrl()
1069 v4l2_ctrl->step = 1; in __uvc_query_v4l2_ctrl()
1071 menu = mapping->menu_info; in __uvc_query_v4l2_ctrl()
1072 for (i = 0; i < mapping->menu_count; ++i, ++menu) { in __uvc_query_v4l2_ctrl()
1073 if (menu->value == v4l2_ctrl->default_value) { in __uvc_query_v4l2_ctrl()
1074 v4l2_ctrl->default_value = i; in __uvc_query_v4l2_ctrl()
1082 v4l2_ctrl->minimum = 0; in __uvc_query_v4l2_ctrl()
1083 v4l2_ctrl->maximum = 1; in __uvc_query_v4l2_ctrl()
1084 v4l2_ctrl->step = 1; in __uvc_query_v4l2_ctrl()
1088 v4l2_ctrl->minimum = 0; in __uvc_query_v4l2_ctrl()
1089 v4l2_ctrl->maximum = 0; in __uvc_query_v4l2_ctrl()
1090 v4l2_ctrl->step = 0; in __uvc_query_v4l2_ctrl()
1097 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MIN) in __uvc_query_v4l2_ctrl()
1098 v4l2_ctrl->minimum = mapping->get(mapping, UVC_GET_MIN, in __uvc_query_v4l2_ctrl()
1101 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_MAX) in __uvc_query_v4l2_ctrl()
1102 v4l2_ctrl->maximum = mapping->get(mapping, UVC_GET_MAX, in __uvc_query_v4l2_ctrl()
1105 if (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES) in __uvc_query_v4l2_ctrl()
1106 v4l2_ctrl->step = mapping->get(mapping, UVC_GET_RES, in __uvc_query_v4l2_ctrl()
1116 struct uvc_control_mapping *mapping; in uvc_query_v4l2_ctrl() local
1119 ret = mutex_lock_interruptible(&chain->ctrl_mutex); in uvc_query_v4l2_ctrl()
1121 return -ERESTARTSYS; in uvc_query_v4l2_ctrl()
1123 ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping); in uvc_query_v4l2_ctrl()
1125 ret = -EINVAL; in uvc_query_v4l2_ctrl()
1129 ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl); in uvc_query_v4l2_ctrl()
1131 mutex_unlock(&chain->ctrl_mutex); in uvc_query_v4l2_ctrl()
1136 * Mapping V4L2 controls to UVC controls can be straightforward if done well.
1148 struct uvc_control_mapping *mapping; in uvc_query_v4l2_menu() local
1150 u32 index = query_menu->index; in uvc_query_v4l2_menu()
1151 u32 id = query_menu->id; in uvc_query_v4l2_menu()
1155 query_menu->id = id; in uvc_query_v4l2_menu()
1156 query_menu->index = index; in uvc_query_v4l2_menu()
1158 ret = mutex_lock_interruptible(&chain->ctrl_mutex); in uvc_query_v4l2_menu()
1160 return -ERESTARTSYS; in uvc_query_v4l2_menu()
1162 ctrl = uvc_find_control(chain, query_menu->id, &mapping); in uvc_query_v4l2_menu()
1163 if (ctrl == NULL || mapping->v4l2_type != V4L2_CTRL_TYPE_MENU) { in uvc_query_v4l2_menu()
1164 ret = -EINVAL; in uvc_query_v4l2_menu()
1168 if (query_menu->index >= mapping->menu_count) { in uvc_query_v4l2_menu()
1169 ret = -EINVAL; in uvc_query_v4l2_menu()
1173 menu_info = &mapping->menu_info[query_menu->index]; in uvc_query_v4l2_menu()
1175 if (mapping->data_type == UVC_CTRL_DATA_TYPE_BITMASK && in uvc_query_v4l2_menu()
1176 (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES)) { in uvc_query_v4l2_menu()
1179 if (!ctrl->cached) { in uvc_query_v4l2_menu()
1185 bitmap = mapping->get(mapping, UVC_GET_RES, in uvc_query_v4l2_menu()
1187 if (!(bitmap & menu_info->value)) { in uvc_query_v4l2_menu()
1188 ret = -EINVAL; in uvc_query_v4l2_menu()
1193 strscpy(query_menu->name, menu_info->name, sizeof(query_menu->name)); in uvc_query_v4l2_menu()
1196 mutex_unlock(&chain->ctrl_mutex); in uvc_query_v4l2_menu()
1200 /* --------------------------------------------------------------------------
1207 struct uvc_control_mapping *mapping, in uvc_ctrl_fill_event() argument
1212 __uvc_query_v4l2_ctrl(chain, ctrl, mapping, &v4l2_ctrl); in uvc_ctrl_fill_event()
1215 ev->type = V4L2_EVENT_CTRL; in uvc_ctrl_fill_event()
1216 ev->id = v4l2_ctrl.id; in uvc_ctrl_fill_event()
1217 ev->u.ctrl.value = value; in uvc_ctrl_fill_event()
1218 ev->u.ctrl.changes = changes; in uvc_ctrl_fill_event()
1219 ev->u.ctrl.type = v4l2_ctrl.type; in uvc_ctrl_fill_event()
1220 ev->u.ctrl.flags = v4l2_ctrl.flags; in uvc_ctrl_fill_event()
1221 ev->u.ctrl.minimum = v4l2_ctrl.minimum; in uvc_ctrl_fill_event()
1222 ev->u.ctrl.maximum = v4l2_ctrl.maximum; in uvc_ctrl_fill_event()
1223 ev->u.ctrl.step = v4l2_ctrl.step; in uvc_ctrl_fill_event()
1224 ev->u.ctrl.default_value = v4l2_ctrl.default_value; in uvc_ctrl_fill_event()
1231 * @handle can be NULL for asynchronous events related to auto-update controls,
1236 struct uvc_control_mapping *mapping, s32 value, u32 changes) in uvc_ctrl_send_event() argument
1238 struct v4l2_fh *originator = handle ? &handle->vfh : NULL; in uvc_ctrl_send_event()
1242 if (list_empty(&mapping->ev_subs)) in uvc_ctrl_send_event()
1245 uvc_ctrl_fill_event(chain, &ev, ctrl, mapping, value, changes); in uvc_ctrl_send_event()
1247 list_for_each_entry(sev, &mapping->ev_subs, node) { in uvc_ctrl_send_event()
1248 if (sev->fh != originator || in uvc_ctrl_send_event()
1249 (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK) || in uvc_ctrl_send_event()
1251 v4l2_event_queue_fh(sev->fh, &ev); in uvc_ctrl_send_event()
1258 * generated the event and may be NULL for auto-update events.
1263 struct uvc_control_mapping *mapping = NULL; in uvc_ctrl_send_slave_event() local
1268 __uvc_find_control(master->entity, slave_id, &mapping, &ctrl, 0); in uvc_ctrl_send_slave_event()
1272 if (__uvc_ctrl_get(chain, ctrl, mapping, &val) == 0) in uvc_ctrl_send_slave_event()
1275 uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes); in uvc_ctrl_send_slave_event()
1282 struct uvc_ctrl_work *w = &dev->async_ctrl; in uvc_ctrl_status_event_work()
1283 struct uvc_video_chain *chain = w->chain; in uvc_ctrl_status_event_work()
1284 struct uvc_control_mapping *mapping; in uvc_ctrl_status_event_work() local
1285 struct uvc_control *ctrl = w->ctrl; in uvc_ctrl_status_event_work()
1290 mutex_lock(&chain->ctrl_mutex); in uvc_ctrl_status_event_work()
1292 handle = ctrl->handle; in uvc_ctrl_status_event_work()
1293 ctrl->handle = NULL; in uvc_ctrl_status_event_work()
1295 list_for_each_entry(mapping, &ctrl->info.mappings, list) { in uvc_ctrl_status_event_work()
1296 s32 value = __uvc_ctrl_get_value(mapping, w->data); in uvc_ctrl_status_event_work()
1299 * handle may be NULL here if the device sends auto-update in uvc_ctrl_status_event_work()
1302 for (i = 0; i < ARRAY_SIZE(mapping->slave_ids); ++i) { in uvc_ctrl_status_event_work()
1303 if (!mapping->slave_ids[i]) in uvc_ctrl_status_event_work()
1307 mapping->slave_ids[i]); in uvc_ctrl_status_event_work()
1310 uvc_ctrl_send_event(chain, handle, ctrl, mapping, value, in uvc_ctrl_status_event_work()
1314 mutex_unlock(&chain->ctrl_mutex); in uvc_ctrl_status_event_work()
1317 w->urb->interval = dev->int_ep->desc.bInterval; in uvc_ctrl_status_event_work()
1318 ret = usb_submit_urb(w->urb, GFP_KERNEL); in uvc_ctrl_status_event_work()
1325 struct uvc_control *ctrl, const u8 *data) in uvc_ctrl_status_event() argument
1327 struct uvc_device *dev = chain->dev; in uvc_ctrl_status_event()
1328 struct uvc_ctrl_work *w = &dev->async_ctrl; in uvc_ctrl_status_event()
1330 if (list_empty(&ctrl->info.mappings)) { in uvc_ctrl_status_event()
1331 ctrl->handle = NULL; in uvc_ctrl_status_event()
1335 w->data = data; in uvc_ctrl_status_event()
1336 w->urb = urb; in uvc_ctrl_status_event()
1337 w->chain = chain; in uvc_ctrl_status_event()
1338 w->ctrl = ctrl; in uvc_ctrl_status_event()
1340 schedule_work(&w->work); in uvc_ctrl_status_event()
1361 struct uvc_control_mapping *mapping; in uvc_ctrl_send_events() local
1368 ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping); in uvc_ctrl_send_events()
1370 if (ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS) in uvc_ctrl_send_events()
1374 for (j = 0; j < ARRAY_SIZE(mapping->slave_ids); ++j) { in uvc_ctrl_send_events()
1375 u32 slave_id = mapping->slave_ids[j]; in uvc_ctrl_send_events()
1388 uvc_ctrl_send_slave_event(handle->chain, handle, ctrl, in uvc_ctrl_send_events()
1396 if (mapping->master_id && in uvc_ctrl_send_events()
1398 mapping->master_id)) in uvc_ctrl_send_events()
1401 uvc_ctrl_send_event(handle->chain, handle, ctrl, mapping, in uvc_ctrl_send_events()
1408 struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh); in uvc_ctrl_add_event()
1409 struct uvc_control_mapping *mapping; in uvc_ctrl_add_event() local
1413 ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex); in uvc_ctrl_add_event()
1415 return -ERESTARTSYS; in uvc_ctrl_add_event()
1417 ctrl = uvc_find_control(handle->chain, sev->id, &mapping); in uvc_ctrl_add_event()
1419 ret = -EINVAL; in uvc_ctrl_add_event()
1423 list_add_tail(&sev->node, &mapping->ev_subs); in uvc_ctrl_add_event()
1424 if (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL) { in uvc_ctrl_add_event()
1429 if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0) in uvc_ctrl_add_event()
1432 uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val, in uvc_ctrl_add_event()
1436 sev->elems = elems; in uvc_ctrl_add_event()
1437 v4l2_event_queue_fh(sev->fh, &ev); in uvc_ctrl_add_event()
1441 mutex_unlock(&handle->chain->ctrl_mutex); in uvc_ctrl_add_event()
1447 struct uvc_fh *handle = container_of(sev->fh, struct uvc_fh, vfh); in uvc_ctrl_del_event()
1449 mutex_lock(&handle->chain->ctrl_mutex); in uvc_ctrl_del_event()
1450 list_del(&sev->node); in uvc_ctrl_del_event()
1451 mutex_unlock(&handle->chain->ctrl_mutex); in uvc_ctrl_del_event()
1461 /* --------------------------------------------------------------------------
1470 * When setting a control, the new value is stored in the control data field
1473 * value is loaded from the hardware before storing the new value in the data
1480 * cleared. When reverting controls, the control data field
1487 return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0; in uvc_ctrl_begin()
1500 for (i = 0; i < entity->ncontrols; ++i) { in uvc_ctrl_commit_entity()
1501 ctrl = &entity->controls[i]; in uvc_ctrl_commit_entity()
1502 if (!ctrl->initialized) in uvc_ctrl_commit_entity()
1505 /* Reset the loaded flag for auto-update controls that were in uvc_ctrl_commit_entity()
1507 * uvc_ctrl_get from using the cached value, and for write-only in uvc_ctrl_commit_entity()
1511 if (ctrl->info.flags & UVC_CTRL_FLAG_AUTO_UPDATE || in uvc_ctrl_commit_entity()
1512 !(ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR)) in uvc_ctrl_commit_entity()
1513 ctrl->loaded = 0; in uvc_ctrl_commit_entity()
1515 if (!ctrl->dirty) in uvc_ctrl_commit_entity()
1519 ret = uvc_query_ctrl(dev, UVC_SET_CUR, ctrl->entity->id, in uvc_ctrl_commit_entity()
1520 dev->intfnum, ctrl->info.selector, in uvc_ctrl_commit_entity()
1522 ctrl->info.size); in uvc_ctrl_commit_entity()
1529 ctrl->info.size); in uvc_ctrl_commit_entity()
1531 ctrl->dirty = 0; in uvc_ctrl_commit_entity()
1544 struct uvc_video_chain *chain = handle->chain; in __uvc_ctrl_commit()
1549 list_for_each_entry(entity, &chain->entities, chain) { in __uvc_ctrl_commit()
1550 ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback); in __uvc_ctrl_commit()
1558 mutex_unlock(&chain->ctrl_mutex); in __uvc_ctrl_commit()
1566 struct uvc_control_mapping *mapping; in uvc_ctrl_get() local
1568 ctrl = uvc_find_control(chain, xctrl->id, &mapping); in uvc_ctrl_get()
1570 return -EINVAL; in uvc_ctrl_get()
1572 return __uvc_ctrl_get(chain, ctrl, mapping, &xctrl->value); in uvc_ctrl_get()
1578 struct uvc_video_chain *chain = handle->chain; in uvc_ctrl_set()
1580 struct uvc_control_mapping *mapping; in uvc_ctrl_set() local
1587 ctrl = uvc_find_control(chain, xctrl->id, &mapping); in uvc_ctrl_set()
1589 return -EINVAL; in uvc_ctrl_set()
1590 if (!(ctrl->info.flags & UVC_CTRL_FLAG_SET_CUR)) in uvc_ctrl_set()
1591 return -EACCES; in uvc_ctrl_set()
1594 switch (mapping->v4l2_type) { in uvc_ctrl_set()
1596 if (!ctrl->cached) { in uvc_ctrl_set()
1602 min = mapping->get(mapping, UVC_GET_MIN, in uvc_ctrl_set()
1604 max = mapping->get(mapping, UVC_GET_MAX, in uvc_ctrl_set()
1606 step = mapping->get(mapping, UVC_GET_RES, in uvc_ctrl_set()
1611 xctrl->value = min + ((u32)(xctrl->value - min) + step / 2) in uvc_ctrl_set()
1613 if (mapping->data_type == UVC_CTRL_DATA_TYPE_SIGNED) in uvc_ctrl_set()
1614 xctrl->value = clamp(xctrl->value, min, max); in uvc_ctrl_set()
1616 xctrl->value = clamp_t(u32, xctrl->value, min, max); in uvc_ctrl_set()
1617 value = xctrl->value; in uvc_ctrl_set()
1621 xctrl->value = clamp(xctrl->value, 0, 1); in uvc_ctrl_set()
1622 value = xctrl->value; in uvc_ctrl_set()
1626 if (xctrl->value < 0 || xctrl->value >= mapping->menu_count) in uvc_ctrl_set()
1627 return -ERANGE; in uvc_ctrl_set()
1628 value = mapping->menu_info[xctrl->value].value; in uvc_ctrl_set()
1633 if (mapping->data_type == UVC_CTRL_DATA_TYPE_BITMASK && in uvc_ctrl_set()
1634 (ctrl->info.flags & UVC_CTRL_FLAG_GET_RES)) { in uvc_ctrl_set()
1635 if (!ctrl->cached) { in uvc_ctrl_set()
1641 step = mapping->get(mapping, UVC_GET_RES, in uvc_ctrl_set()
1644 return -EINVAL; in uvc_ctrl_set()
1650 value = xctrl->value; in uvc_ctrl_set()
1654 /* If the mapping doesn't span the whole UVC control, the current value in uvc_ctrl_set()
1655 * needs to be loaded from the device to perform the read-modify-write in uvc_ctrl_set()
1658 if (!ctrl->loaded && (ctrl->info.size * 8) != mapping->size) { in uvc_ctrl_set()
1659 if ((ctrl->info.flags & UVC_CTRL_FLAG_GET_CUR) == 0) { in uvc_ctrl_set()
1661 0, ctrl->info.size); in uvc_ctrl_set()
1663 ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, in uvc_ctrl_set()
1664 ctrl->entity->id, chain->dev->intfnum, in uvc_ctrl_set()
1665 ctrl->info.selector, in uvc_ctrl_set()
1667 ctrl->info.size); in uvc_ctrl_set()
1672 ctrl->loaded = 1; in uvc_ctrl_set()
1676 if (!ctrl->dirty) { in uvc_ctrl_set()
1679 ctrl->info.size); in uvc_ctrl_set()
1682 mapping->set(mapping, value, in uvc_ctrl_set()
1685 if (ctrl->info.flags & UVC_CTRL_FLAG_ASYNCHRONOUS) in uvc_ctrl_set()
1686 ctrl->handle = handle; in uvc_ctrl_set()
1688 ctrl->dirty = 1; in uvc_ctrl_set()
1689 ctrl->modified = 1; in uvc_ctrl_set()
1693 /* --------------------------------------------------------------------------
1704 u8 *data; in uvc_ctrl_get_flags() local
1707 data = kmalloc(1, GFP_KERNEL); in uvc_ctrl_get_flags()
1708 if (data == NULL) in uvc_ctrl_get_flags()
1709 return -ENOMEM; in uvc_ctrl_get_flags()
1711 ret = uvc_query_ctrl(dev, UVC_GET_INFO, ctrl->entity->id, dev->intfnum, in uvc_ctrl_get_flags()
1712 info->selector, data, 1); in uvc_ctrl_get_flags()
1714 info->flags |= (data[0] & UVC_CONTROL_CAP_GET ? in uvc_ctrl_get_flags()
1716 | (data[0] & UVC_CONTROL_CAP_SET ? in uvc_ctrl_get_flags()
1718 | (data[0] & UVC_CONTROL_CAP_AUTOUPDATE ? in uvc_ctrl_get_flags()
1720 | (data[0] & UVC_CONTROL_CAP_ASYNCHRONOUS ? in uvc_ctrl_get_flags()
1723 kfree(data); in uvc_ctrl_get_flags()
1755 if (!usb_match_one_id(dev->intf, &fixups[i].id)) in uvc_ctrl_fixup_xu_info()
1758 if (fixups[i].entity == ctrl->entity->id && in uvc_ctrl_fixup_xu_info()
1759 fixups[i].selector == info->selector) { in uvc_ctrl_fixup_xu_info()
1760 info->flags = fixups[i].flags; in uvc_ctrl_fixup_xu_info()
1772 u8 *data; in uvc_ctrl_fill_xu_info() local
1775 data = kmalloc(2, GFP_KERNEL); in uvc_ctrl_fill_xu_info()
1776 if (data == NULL) in uvc_ctrl_fill_xu_info()
1777 return -ENOMEM; in uvc_ctrl_fill_xu_info()
1779 memcpy(info->entity, ctrl->entity->extension.guidExtensionCode, in uvc_ctrl_fill_xu_info()
1780 sizeof(info->entity)); in uvc_ctrl_fill_xu_info()
1781 info->index = ctrl->index; in uvc_ctrl_fill_xu_info()
1782 info->selector = ctrl->index + 1; in uvc_ctrl_fill_xu_info()
1785 ret = uvc_query_ctrl(dev, UVC_GET_LEN, ctrl->entity->id, dev->intfnum, in uvc_ctrl_fill_xu_info()
1786 info->selector, data, 2); in uvc_ctrl_fill_xu_info()
1790 info->entity, info->selector, ret); in uvc_ctrl_fill_xu_info()
1794 info->size = le16_to_cpup((__le16 *)data); in uvc_ctrl_fill_xu_info()
1796 info->flags = UVC_CTRL_FLAG_GET_MIN | UVC_CTRL_FLAG_GET_MAX in uvc_ctrl_fill_xu_info()
1803 info->entity, info->selector, ret); in uvc_ctrl_fill_xu_info()
1811 info->entity, info->selector, info->size, in uvc_ctrl_fill_xu_info()
1812 (info->flags & UVC_CTRL_FLAG_GET_CUR) ? 1 : 0, in uvc_ctrl_fill_xu_info()
1813 (info->flags & UVC_CTRL_FLAG_SET_CUR) ? 1 : 0, in uvc_ctrl_fill_xu_info()
1814 (info->flags & UVC_CTRL_FLAG_AUTO_UPDATE) ? 1 : 0); in uvc_ctrl_fill_xu_info()
1817 kfree(data); in uvc_ctrl_fill_xu_info()
1830 if (ctrl->initialized) in uvc_ctrl_init_xu_ctrl()
1841 info.selector, dev->udev->devpath, ctrl->entity->id); in uvc_ctrl_init_xu_ctrl()
1855 u8 *data = NULL; in uvc_xu_ctrl_query() local
1860 list_for_each_entry(entity, &chain->entities, chain) { in uvc_xu_ctrl_query()
1862 entity->id == xqry->unit) { in uvc_xu_ctrl_query()
1870 xqry->unit); in uvc_xu_ctrl_query()
1871 return -ENOENT; in uvc_xu_ctrl_query()
1876 for (i = 0; i < entity->ncontrols; ++i) { in uvc_xu_ctrl_query()
1877 ctrl = &entity->controls[i]; in uvc_xu_ctrl_query()
1878 if (ctrl->index == xqry->selector - 1) { in uvc_xu_ctrl_query()
1886 entity->extension.guidExtensionCode, xqry->selector); in uvc_xu_ctrl_query()
1887 return -ENOENT; in uvc_xu_ctrl_query()
1890 if (mutex_lock_interruptible(&chain->ctrl_mutex)) in uvc_xu_ctrl_query()
1891 return -ERESTARTSYS; in uvc_xu_ctrl_query()
1893 ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl); in uvc_xu_ctrl_query()
1895 ret = -ENOENT; in uvc_xu_ctrl_query()
1901 size = ctrl->info.size; in uvc_xu_ctrl_query()
1903 switch (xqry->query) { in uvc_xu_ctrl_query()
1929 ret = -EINVAL; in uvc_xu_ctrl_query()
1933 if (size != xqry->size) { in uvc_xu_ctrl_query()
1934 ret = -ENOBUFS; in uvc_xu_ctrl_query()
1938 if (reqflags && !(ctrl->info.flags & reqflags)) { in uvc_xu_ctrl_query()
1939 ret = -EBADRQC; in uvc_xu_ctrl_query()
1943 data = kmalloc(size, GFP_KERNEL); in uvc_xu_ctrl_query()
1944 if (data == NULL) { in uvc_xu_ctrl_query()
1945 ret = -ENOMEM; in uvc_xu_ctrl_query()
1949 if (xqry->query == UVC_SET_CUR && in uvc_xu_ctrl_query()
1950 copy_from_user(data, xqry->data, size)) { in uvc_xu_ctrl_query()
1951 ret = -EFAULT; in uvc_xu_ctrl_query()
1955 ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit, in uvc_xu_ctrl_query()
1956 chain->dev->intfnum, xqry->selector, data, size); in uvc_xu_ctrl_query()
1960 if (xqry->query != UVC_SET_CUR && in uvc_xu_ctrl_query()
1961 copy_to_user(xqry->data, data, size)) in uvc_xu_ctrl_query()
1962 ret = -EFAULT; in uvc_xu_ctrl_query()
1964 kfree(data); in uvc_xu_ctrl_query()
1965 mutex_unlock(&chain->ctrl_mutex); in uvc_xu_ctrl_query()
1969 /* --------------------------------------------------------------------------
1978 * - Don't restore modified controls that are back to their default value.
1979 * - Handle restore order (Auto-Exposure Mode should be restored before
1990 list_for_each_entry(entity, &dev->entities, list) { in uvc_ctrl_restore_values()
1992 for (i = 0; i < entity->ncontrols; ++i) { in uvc_ctrl_restore_values()
1993 ctrl = &entity->controls[i]; in uvc_ctrl_restore_values()
1995 if (!ctrl->initialized || !ctrl->modified || in uvc_ctrl_restore_values()
1996 (ctrl->info.flags & UVC_CTRL_FLAG_RESTORE) == 0) in uvc_ctrl_restore_values()
2000 ctrl->info.entity, ctrl->info.index, in uvc_ctrl_restore_values()
2001 ctrl->info.selector); in uvc_ctrl_restore_values()
2002 ctrl->dirty = 1; in uvc_ctrl_restore_values()
2013 /* --------------------------------------------------------------------------
2014 * Control and mapping handling
2023 ctrl->info = *info; in uvc_ctrl_add_info()
2024 INIT_LIST_HEAD(&ctrl->info.mappings); in uvc_ctrl_add_info()
2027 ctrl->uvc_data = kzalloc(ctrl->info.size * UVC_CTRL_DATA_LAST + 1, in uvc_ctrl_add_info()
2029 if (!ctrl->uvc_data) in uvc_ctrl_add_info()
2030 return -ENOMEM; in uvc_ctrl_add_info()
2032 ctrl->initialized = 1; in uvc_ctrl_add_info()
2035 "entity %u\n", ctrl->info.entity, ctrl->info.selector, in uvc_ctrl_add_info()
2036 dev->udev->devpath, ctrl->entity->id); in uvc_ctrl_add_info()
2042 * Add a control mapping to a given control.
2045 struct uvc_control *ctrl, const struct uvc_control_mapping *mapping) in __uvc_ctrl_add_mapping() argument
2050 /* Most mappings come from static kernel data and need to be duplicated. in __uvc_ctrl_add_mapping()
2054 map = kmemdup(mapping, sizeof(*mapping), GFP_KERNEL); in __uvc_ctrl_add_mapping()
2056 return -ENOMEM; in __uvc_ctrl_add_mapping()
2058 INIT_LIST_HEAD(&map->ev_subs); in __uvc_ctrl_add_mapping()
2060 size = sizeof(*mapping->menu_info) * mapping->menu_count; in __uvc_ctrl_add_mapping()
2061 map->menu_info = kmemdup(mapping->menu_info, size, GFP_KERNEL); in __uvc_ctrl_add_mapping()
2062 if (map->menu_info == NULL) { in __uvc_ctrl_add_mapping()
2064 return -ENOMEM; in __uvc_ctrl_add_mapping()
2067 if (map->get == NULL) in __uvc_ctrl_add_mapping()
2068 map->get = uvc_get_le_value; in __uvc_ctrl_add_mapping()
2069 if (map->set == NULL) in __uvc_ctrl_add_mapping()
2070 map->set = uvc_set_le_value; in __uvc_ctrl_add_mapping()
2072 list_add_tail(&map->list, &ctrl->info.mappings); in __uvc_ctrl_add_mapping()
2074 "Adding mapping '%s' to control %pUl/%u.\n", in __uvc_ctrl_add_mapping()
2075 map->name, ctrl->info.entity, ctrl->info.selector); in __uvc_ctrl_add_mapping()
2081 const struct uvc_control_mapping *mapping) in uvc_ctrl_add_mapping() argument
2083 struct uvc_device *dev = chain->dev; in uvc_ctrl_add_mapping()
2090 if (mapping->id & ~V4L2_CTRL_ID_MASK) { in uvc_ctrl_add_mapping()
2091 uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', control " in uvc_ctrl_add_mapping()
2092 "id 0x%08x is invalid.\n", mapping->name, in uvc_ctrl_add_mapping()
2093 mapping->id); in uvc_ctrl_add_mapping()
2094 return -EINVAL; in uvc_ctrl_add_mapping()
2098 list_for_each_entry(entity, &chain->entities, chain) { in uvc_ctrl_add_mapping()
2102 !uvc_entity_match_guid(entity, mapping->entity)) in uvc_ctrl_add_mapping()
2105 for (i = 0; i < entity->ncontrols; ++i) { in uvc_ctrl_add_mapping()
2106 ctrl = &entity->controls[i]; in uvc_ctrl_add_mapping()
2107 if (ctrl->index == mapping->selector - 1) { in uvc_ctrl_add_mapping()
2117 return -ENOENT; in uvc_ctrl_add_mapping()
2119 if (mutex_lock_interruptible(&chain->ctrl_mutex)) in uvc_ctrl_add_mapping()
2120 return -ERESTARTSYS; in uvc_ctrl_add_mapping()
2125 ret = -ENOENT; in uvc_ctrl_add_mapping()
2129 /* Validate the user-provided bit-size and offset */ in uvc_ctrl_add_mapping()
2130 if (mapping->size > 32 || in uvc_ctrl_add_mapping()
2131 mapping->offset + mapping->size > ctrl->info.size * 8) { in uvc_ctrl_add_mapping()
2132 ret = -EINVAL; in uvc_ctrl_add_mapping()
2136 list_for_each_entry(map, &ctrl->info.mappings, list) { in uvc_ctrl_add_mapping()
2137 if (mapping->id == map->id) { in uvc_ctrl_add_mapping()
2138 uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', " in uvc_ctrl_add_mapping()
2140 mapping->name, mapping->id); in uvc_ctrl_add_mapping()
2141 ret = -EEXIST; in uvc_ctrl_add_mapping()
2147 if (atomic_inc_return(&dev->nmappings) > UVC_MAX_CONTROL_MAPPINGS) { in uvc_ctrl_add_mapping()
2148 atomic_dec(&dev->nmappings); in uvc_ctrl_add_mapping()
2149 uvc_trace(UVC_TRACE_CONTROL, "Can't add mapping '%s', maximum " in uvc_ctrl_add_mapping()
2150 "mappings count (%u) exceeded.\n", mapping->name, in uvc_ctrl_add_mapping()
2152 ret = -ENOMEM; in uvc_ctrl_add_mapping()
2156 ret = __uvc_ctrl_add_mapping(dev, ctrl, mapping); in uvc_ctrl_add_mapping()
2158 atomic_dec(&dev->nmappings); in uvc_ctrl_add_mapping()
2161 mutex_unlock(&chain->ctrl_mutex); in uvc_ctrl_add_mapping()
2197 controls = entity->processing.bmControls; in uvc_ctrl_prune_entity()
2198 size = entity->processing.bControlSize; in uvc_ctrl_prune_entity()
2204 controls = entity->camera.bmControls; in uvc_ctrl_prune_entity()
2205 size = entity->camera.bControlSize; in uvc_ctrl_prune_entity()
2213 if (!usb_match_one_id(dev->intf, &blacklist[i].id)) in uvc_ctrl_prune_entity()
2221 "removing it.\n", entity->id, blacklist[i].index); in uvc_ctrl_prune_entity()
2235 const struct uvc_control_mapping *mapping = uvc_ctrl_mappings; in uvc_ctrl_init_ctrl() local
2237 mapping + ARRAY_SIZE(uvc_ctrl_mappings); in uvc_ctrl_init_ctrl()
2244 if (UVC_ENTITY_TYPE(ctrl->entity) == UVC_VC_EXTENSION_UNIT) in uvc_ctrl_init_ctrl()
2248 if (uvc_entity_match_guid(ctrl->entity, info->entity) && in uvc_ctrl_init_ctrl()
2249 ctrl->index == info->index) { in uvc_ctrl_init_ctrl()
2257 uvc_ctrl_get_flags(dev, ctrl, &ctrl->info); in uvc_ctrl_init_ctrl()
2262 if (!ctrl->initialized) in uvc_ctrl_init_ctrl()
2265 for (; mapping < mend; ++mapping) { in uvc_ctrl_init_ctrl()
2266 if (uvc_entity_match_guid(ctrl->entity, mapping->entity) && in uvc_ctrl_init_ctrl()
2267 ctrl->info.selector == mapping->selector) in uvc_ctrl_init_ctrl()
2268 __uvc_ctrl_add_mapping(dev, ctrl, mapping); in uvc_ctrl_init_ctrl()
2280 INIT_WORK(&dev->async_ctrl.work, uvc_ctrl_status_event_work); in uvc_ctrl_init_device()
2283 list_for_each_entry(entity, &dev->entities, list) { in uvc_ctrl_init_device()
2289 bmControls = entity->extension.bmControls; in uvc_ctrl_init_device()
2290 bControlSize = entity->extension.bControlSize; in uvc_ctrl_init_device()
2292 bmControls = entity->processing.bmControls; in uvc_ctrl_init_device()
2293 bControlSize = entity->processing.bControlSize; in uvc_ctrl_init_device()
2295 bmControls = entity->camera.bmControls; in uvc_ctrl_init_device()
2296 bControlSize = entity->camera.bControlSize; in uvc_ctrl_init_device()
2307 entity->controls = kcalloc(ncontrols, sizeof(*ctrl), in uvc_ctrl_init_device()
2309 if (entity->controls == NULL) in uvc_ctrl_init_device()
2310 return -ENOMEM; in uvc_ctrl_init_device()
2311 entity->ncontrols = ncontrols; in uvc_ctrl_init_device()
2314 ctrl = entity->controls; in uvc_ctrl_init_device()
2319 ctrl->entity = entity; in uvc_ctrl_init_device()
2320 ctrl->index = i; in uvc_ctrl_init_device()
2336 struct uvc_control_mapping *mapping, *nm; in uvc_ctrl_cleanup_mappings() local
2338 list_for_each_entry_safe(mapping, nm, &ctrl->info.mappings, list) { in uvc_ctrl_cleanup_mappings()
2339 list_del(&mapping->list); in uvc_ctrl_cleanup_mappings()
2340 kfree(mapping->menu_info); in uvc_ctrl_cleanup_mappings()
2341 kfree(mapping); in uvc_ctrl_cleanup_mappings()
2351 if (dev->async_ctrl.work.func) in uvc_ctrl_cleanup_device()
2352 cancel_work_sync(&dev->async_ctrl.work); in uvc_ctrl_cleanup_device()
2355 list_for_each_entry(entity, &dev->entities, list) { in uvc_ctrl_cleanup_device()
2356 for (i = 0; i < entity->ncontrols; ++i) { in uvc_ctrl_cleanup_device()
2357 struct uvc_control *ctrl = &entity->controls[i]; in uvc_ctrl_cleanup_device()
2359 if (!ctrl->initialized) in uvc_ctrl_cleanup_device()
2363 kfree(ctrl->uvc_data); in uvc_ctrl_cleanup_device()
2366 kfree(entity->controls); in uvc_ctrl_cleanup_device()