drm_mode_config.h | Explore in Territory

/*
 * 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_MODE_CONFIG_H__
#define __DRM_MODE_CONFIG_H__

#include <linux/mutex.h>
#include <linux/types.h>
#include <linux/idr.h>
#include <linux/workqueue.h>
#include <linux/llist.h>

#include <drm/drm_modeset_lock.h>

struct drm_file;
struct drm_device;
struct drm_atomic_state;
struct drm_mode_fb_cmd2;
struct drm_format_info;
struct drm_display_mode;

/**
 * struct drm_mode_config_funcs - basic driver provided mode setting functions
 *
 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
 * involve drivers.
 */
struct drm_mode_config_funcs { … };

/**
 * struct drm_mode_config - Mode configuration control structure
 * @min_width: minimum fb pixel width on this device
 * @min_height: minimum fb pixel height on this device
 * @max_width: maximum fb pixel width on this device
 * @max_height: maximum fb pixel height on this device
 * @funcs: core driver provided mode setting functions
 * @poll_enabled: track polling support for this device
 * @poll_running: track polling status for this device
 * @delayed_event: track delayed poll uevent deliver for this device
 * @output_poll_work: delayed work for polling in process context
 * @preferred_depth: preferred RBG pixel depth, used by fb helpers
 * @prefer_shadow: hint to userspace to prefer shadow-fb rendering
 * @cursor_width: hint to userspace for max cursor width
 * @cursor_height: hint to userspace for max cursor height
 * @helper_private: mid-layer private data
 *
 * Core mode resource tracking structure.  All CRTC, encoders, and connectors
 * enumerated by the driver are added here, as are global properties.  Some
 * global restrictions are also here, e.g. dimension restrictions.
 *
 * Framebuffer sizes refer to the virtual screen that can be displayed by
 * the CRTC. This can be different from the physical resolution programmed.
 * The minimum width and height, stored in @min_width and @min_height,
 * describe the smallest size of the framebuffer. It correlates to the
 * minimum programmable resolution.
 * The maximum width, stored in @max_width, is typically limited by the
 * maximum pitch between two adjacent scanlines. The maximum height, stored
 * in @max_height, is usually only limited by the amount of addressable video
 * memory. For hardware that has no real maximum, drivers should pick a
 * reasonable default.
 *
 * See also @DRM_SHADOW_PLANE_MAX_WIDTH and @DRM_SHADOW_PLANE_MAX_HEIGHT.
 */
struct drm_mode_config { … };

int __must_check drmm_mode_config_init(struct drm_device *dev);

/**
 * drm_mode_config_init - DRM mode_configuration structure initialization
 * @dev: DRM device
 *
 * This is the unmanaged version of drmm_mode_config_init() for drivers which
 * still explicitly call drm_mode_config_cleanup().
 *
 * FIXME: This function is deprecated and drivers should be converted over to
 * drmm_mode_config_init().
 */
static inline int drm_mode_config_init(struct drm_device *dev)
{ … }

void drm_mode_config_reset(struct drm_device *dev);
void drm_mode_config_cleanup(struct drm_device *dev);

#endif
linux/include/drm/drm_mode_config.h
