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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146/* * Copyright (c) 2016 Intel Corporation * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that copyright * notice and this permission notice appear in supporting documentation, and * that the name of the copyright holders not be used in advertising or * publicity pertaining to distribution of the software without specific, * written prior permission. The copyright holders make no representations * about the suitability of this software for any purpose. It is provided "as * is" without express or implied warranty. * * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE * OF THIS SOFTWARE. */
#ifndef __DRM_MODESET_H__#define __DRM_MODESET_H__
#include <linux/kref.h>#include <drm/drm_lease.h>struct drm_object_properties;struct drm_property;struct drm_device;struct drm_file;
/** * struct drm_mode_object - base structure for modeset objects * @id: userspace visible identifier * @type: type of the object, one of DRM_MODE_OBJECT\_\* * @properties: properties attached to this object, including values * @refcount: reference count for objects with dynamic lifetime * @free_cb: free function callback, only set for objects with dynamic lifetime * * Base structure for modeset objects visible to userspace. Objects can be * looked up using drm_mode_object_find(). Besides basic uapi interface * properties like @id and @type it provides two services: * * - It tracks attached properties and their values. This is used by &drm_crtc, * &drm_plane and &drm_connector. Properties are attached by calling * drm_object_attach_property() before the object is visible to userspace. * * - For objects with dynamic lifetimes (as indicated by a non-NULL @free_cb) it * provides reference counting through drm_mode_object_get() and * drm_mode_object_put(). This is used by &drm_framebuffer, &drm_connector * and &drm_property_blob. These objects provide specialized reference * counting wrappers. */struct drm_mode_object { uint32_t id; uint32_t type; struct drm_object_properties *properties; struct kref refcount; void (*free_cb)(struct kref *kref);};
#define DRM_OBJECT_MAX_PROPERTY 64/** * struct drm_object_properties - property tracking for &drm_mode_object */struct drm_object_properties { /** * @count: number of valid properties, must be less than or equal to * DRM_OBJECT_MAX_PROPERTY. */
int count; /** * @properties: Array of pointers to &drm_property. * * NOTE: if we ever start dynamically destroying properties (ie. * not at drm_mode_config_cleanup() time), then we'd have to do * a better job of detaching property from mode objects to avoid * dangling property pointers: */ struct drm_property *properties[DRM_OBJECT_MAX_PROPERTY];
/** * @values: Array to store the property values, matching @properties. Do * not read/write values directly, but use * drm_object_property_get_value() and drm_object_property_set_value(). * * Note that atomic drivers do not store mutable properties in this * array, but only the decoded values in the corresponding state * structure. The decoding is done using the &drm_crtc.atomic_get_property and * &drm_crtc.atomic_set_property hooks for &struct drm_crtc. For * &struct drm_plane the hooks are &drm_plane_funcs.atomic_get_property and * &drm_plane_funcs.atomic_set_property. And for &struct drm_connector * the hooks are &drm_connector_funcs.atomic_get_property and * &drm_connector_funcs.atomic_set_property . * * Hence atomic drivers should not use drm_object_property_set_value() * and drm_object_property_get_value() on mutable objects, i.e. those * without the DRM_MODE_PROP_IMMUTABLE flag set. * * For atomic drivers the default value of properties is stored in this * array, so drm_object_property_get_default_value can be used to * retrieve it. */ uint64_t values[DRM_OBJECT_MAX_PROPERTY];};
/* Avoid boilerplate. I'm tired of typing. */#define DRM_ENUM_NAME_FN(fnname, list) \ const char *fnname(int val) \ { \ int i; \ for (i = 0; i < ARRAY_SIZE(list); i++) { \ if (list[i].type == val) \ return list[i].name; \ } \ return "(unknown)"; \ }
struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, struct drm_file *file_priv, uint32_t id, uint32_t type);void drm_mode_object_get(struct drm_mode_object *obj);void drm_mode_object_put(struct drm_mode_object *obj);
int drm_object_property_set_value(struct drm_mode_object *obj, struct drm_property *property, uint64_t val);int drm_object_property_get_value(struct drm_mode_object *obj, struct drm_property *property, uint64_t *value);int drm_object_property_get_default_value(struct drm_mode_object *obj, struct drm_property *property, uint64_t *val);int drm_object_immutable_property_get_value(struct drm_mode_object *obj, struct drm_property *property, uint64_t *val);
void drm_object_attach_property(struct drm_mode_object *obj, struct drm_property *property, uint64_t init_val);
bool drm_mode_object_lease_required(uint32_t type);#endif