3  *      uvc_ctrl.c  --  USB Video Class driver - Controls
34  * Controls
858  * UVC Controls
873 		ctrl = &entity->controls[i];  in __uvc_find_control()
959 			/* GET_RES is mandatory for XU controls, but some  in uvc_ctrl_populate_cache()
1137  * Mapping V4L2 controls to UVC controls can be straightforward if done well.
1138  * Most of the UVC controls exist in V4L2, and can be mapped directly. Some
1140  * Balance V4L2 controls use the White Balance Component UVC control) or
1142  * table for the controls that can be mapped directly, and handle the others
1232  * @handle can be NULL for asynchronous events related to auto-update controls,
1474  * To make extended set operations as atomic as the hardware allows, controls
1486  * After processing all controls in the transaction, uvc_ctrl_commit or
1488  * hardware or revert them. When applying changes, all controls marked as
1490  * cleared. When reverting controls, the control data field
1492  * (UVC_CTRL_DATA_BACKUP) for all dirty controls. Both functions release the
1511 		ctrl = &entity->controls[i];  in uvc_ctrl_commit_entity()
1515 		/* Reset the loaded flag for auto-update controls that were  in uvc_ctrl_commit_entity()
1518 		 * controls to prevent uvc_ctrl_set from setting bits not  in uvc_ctrl_commit_entity()
1641 		 * UVC controls that support it.  in uvc_ctrl_set()
1704  * Dynamic controls
1777  * Query control information (size and flags) for XU controls.
1887 		ctrl = &entity->controls[i];  in uvc_xu_ctrl_query()
1984  * Restore control values after resume, skipping controls that haven't been
1988  * - Don't restore modified controls that are back to their default value.
1999 	/* Walk the entities list and restore controls when possible. */  in uvc_ctrl_restore_values()
2003 			ctrl = &entity->controls[i];  in uvc_ctrl_restore_values()
2116 			ctrl = &entity->controls[i];  in uvc_ctrl_add_mapping()
2132 	/* Perform delayed initialization of XU controls */  in uvc_ctrl_add_mapping()
2176  * Prune an entity of its bogus controls using a blacklist. Bogus controls
2201 	u8 *controls;  in uvc_ctrl_prune_entity()  local
2207 		controls = entity->processing.bmControls;  in uvc_ctrl_prune_entity()
2214 		controls = entity->camera.bmControls;  in uvc_ctrl_prune_entity()
2227 		    !uvc_test_bit(controls, blacklist[i].index))  in uvc_ctrl_prune_entity()
2233 		uvc_clear_bit(controls, blacklist[i].index);  in uvc_ctrl_prune_entity()
2249 	/* XU controls initialization requires querying the device for control  in uvc_ctrl_init_ctrl()
2251 	 * repeatedly in a tight loop, delay XU controls initialization until  in uvc_ctrl_init_ctrl()
2265 			 * GET_INFO on standard controls.  in uvc_ctrl_init_ctrl()
2283  * Initialize device controls.
2292 	/* Walk the entities list and instantiate controls */  in uvc_ctrl_init_device()
2309 		/* Remove bogus/blacklisted controls */  in uvc_ctrl_init_device()
2312 		/* Count supported controls and allocate the controls array */  in uvc_ctrl_init_device()
2317 		entity->controls = kcalloc(ncontrols, sizeof(*ctrl),  in uvc_ctrl_init_device()
2319 		if (entity->controls == NULL)  in uvc_ctrl_init_device()
2323 		/* Initialize all supported controls */  in uvc_ctrl_init_device()
2324 		ctrl = entity->controls;  in uvc_ctrl_init_device()
2341  * Cleanup device controls.
2364 	/* Free controls and control mappings for all entities. */  in uvc_ctrl_cleanup_device()
2367 			struct uvc_control *ctrl = &entity->controls[i];  in uvc_ctrl_cleanup_device()
2376 		kfree(entity->controls);  in uvc_ctrl_cleanup_device()