1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (C) 2015 Free Electrons
4  * Copyright (C) 2015 NextThing Co
5  *
6  * Maxime Ripard <maxime.ripard@free-electrons.com>
7  */
8 
9 #include <drm/drm_atomic.h>
10 #include <drm/drm_atomic_helper.h>
11 #include <drm/drm_gem_framebuffer_helper.h>
12 #include <drm/drmP.h>
13 
14 #include "sun4i_drv.h"
15 #include "sun4i_framebuffer.h"
16 
17 static int sun4i_de_atomic_check(struct drm_device *dev,
18 				 struct drm_atomic_state *state)
19 {
20 	int ret;
21 
22 	ret = drm_atomic_helper_check_modeset(dev, state);
23 	if (ret)
24 		return ret;
25 
26 	ret = drm_atomic_normalize_zpos(dev, state);
27 	if (ret)
28 		return ret;
29 
30 	return drm_atomic_helper_check_planes(dev, state);
31 }
32 
33 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
34 	.atomic_check		= sun4i_de_atomic_check,
35 	.atomic_commit		= drm_atomic_helper_commit,
36 	.fb_create		= drm_gem_fb_create,
37 };
38 
39 static struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
40 	.atomic_commit_tail	= drm_atomic_helper_commit_tail_rpm,
41 };
42 
43 void sun4i_framebuffer_init(struct drm_device *drm)
44 {
45 	drm_mode_config_reset(drm);
46 
47 	drm->mode_config.max_width = 8192;
48 	drm->mode_config.max_height = 8192;
49 
50 	drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
51 	drm->mode_config.helper_private = &sun4i_de_mode_config_helpers;
52 }
53