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 
13 #include "sun4i_drv.h"
14 #include "sun4i_framebuffer.h"
15 
16 static int sun4i_de_atomic_check(struct drm_device *dev,
17 				 struct drm_atomic_state *state)
18 {
19 	int ret;
20 
21 	ret = drm_atomic_helper_check_modeset(dev, state);
22 	if (ret)
23 		return ret;
24 
25 	ret = drm_atomic_normalize_zpos(dev, state);
26 	if (ret)
27 		return ret;
28 
29 	return drm_atomic_helper_check_planes(dev, state);
30 }
31 
32 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
33 	.atomic_check		= sun4i_de_atomic_check,
34 	.atomic_commit		= drm_atomic_helper_commit,
35 	.fb_create		= drm_gem_fb_create,
36 };
37 
38 static struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
39 	.atomic_commit_tail	= drm_atomic_helper_commit_tail_rpm,
40 };
41 
42 void sun4i_framebuffer_init(struct drm_device *drm)
43 {
44 	drm_mode_config_reset(drm);
45 
46 	drm->mode_config.max_width = 8192;
47 	drm->mode_config.max_height = 8192;
48 
49 	drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
50 	drm->mode_config.helper_private = &sun4i_de_mode_config_helpers;
51 }
52