1 /*
2  * Copyright (C) 2015 Free Electrons
3  * Copyright (C) 2015 NextThing Co
4  *
5  * Maxime Ripard <maxime.ripard@free-electrons.com>
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License as
9  * published by the Free Software Foundation; either version 2 of
10  * the License, or (at your option) any later version.
11  */
12 
13 #include <drm/drm_atomic.h>
14 #include <drm/drm_atomic_helper.h>
15 #include <drm/drm_fb_helper.h>
16 #include <drm/drm_fb_cma_helper.h>
17 #include <drm/drm_gem_framebuffer_helper.h>
18 #include <drm/drmP.h>
19 
20 #include "sun4i_drv.h"
21 #include "sun4i_framebuffer.h"
22 
23 static int sun4i_de_atomic_check(struct drm_device *dev,
24 				 struct drm_atomic_state *state)
25 {
26 	int ret;
27 
28 	ret = drm_atomic_helper_check_modeset(dev, state);
29 	if (ret)
30 		return ret;
31 
32 	ret = drm_atomic_normalize_zpos(dev, state);
33 	if (ret)
34 		return ret;
35 
36 	return drm_atomic_helper_check_planes(dev, state);
37 }
38 
39 static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
40 	.output_poll_changed	= drm_fb_helper_output_poll_changed,
41 	.atomic_check		= sun4i_de_atomic_check,
42 	.atomic_commit		= drm_atomic_helper_commit,
43 	.fb_create		= drm_gem_fb_create,
44 };
45 
46 static struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
47 	.atomic_commit_tail	= drm_atomic_helper_commit_tail_rpm,
48 };
49 
50 int sun4i_framebuffer_init(struct drm_device *drm)
51 {
52 	drm_mode_config_reset(drm);
53 
54 	drm->mode_config.max_width = 8192;
55 	drm->mode_config.max_height = 8192;
56 
57 	drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
58 	drm->mode_config.helper_private = &sun4i_de_mode_config_helpers;
59 
60 	return drm_fb_cma_fbdev_init(drm, 32, 0);
61 }
62 
63 void sun4i_framebuffer_free(struct drm_device *drm)
64 {
65 	drm_fb_cma_fbdev_fini(drm);
66 }
67