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
23static 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
39static 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
46static struct drm_mode_config_helper_funcs sun4i_de_mode_config_helpers = {
47	.atomic_commit_tail	= drm_atomic_helper_commit_tail_rpm,
48};
49
50int 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
63void sun4i_framebuffer_free(struct drm_device *drm)
64{
65	drm_fb_cma_fbdev_fini(drm);
66}