2 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
3 * Author:Mark Yao <mark.yao@rock-chips.com>
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include <linux/kernel.h>
18 #include <drm/drm_atomic.h>
19 #include <drm/drm_fb_helper.h>
20 #include <drm/drm_gem_framebuffer_helper.h>
21 #include <drm/drm_probe_helper.h>
23 #include "rockchip_drm_drv.h"
24 #include "rockchip_drm_fb.h"
25 #include "rockchip_drm_gem.h"
26 #include "rockchip_drm_psr.h"
28 static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb,
29 struct drm_file *file,
30 unsigned int flags, unsigned int color,
31 struct drm_clip_rect *clips,
32 unsigned int num_clips)
34 rockchip_drm_psr_flush_all(fb->dev);
38 static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
39 .destroy = drm_gem_fb_destroy,
40 .create_handle = drm_gem_fb_create_handle,
41 .dirty = rockchip_drm_fb_dirty,
44 static struct drm_framebuffer *
45 rockchip_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd,
46 struct drm_gem_object **obj, unsigned int num_planes)
48 struct drm_framebuffer *fb;
52 fb = kzalloc(sizeof(*fb), GFP_KERNEL);
54 return ERR_PTR(-ENOMEM);
56 drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
58 for (i = 0; i < num_planes; i++)
61 ret = drm_framebuffer_init(dev, fb, &rockchip_drm_fb_funcs);
63 DRM_DEV_ERROR(dev->dev,
64 "Failed to initialize framebuffer: %d\n",
73 static struct drm_framebuffer *
74 rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
75 const struct drm_mode_fb_cmd2 *mode_cmd)
77 const struct drm_format_info *info = drm_get_format_info(dev,
79 struct drm_framebuffer *fb;
80 struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER];
81 struct drm_gem_object *obj;
82 int num_planes = min_t(int, info->num_planes, ROCKCHIP_MAX_FB_BUFFER);
86 for (i = 0; i < num_planes; i++) {
87 unsigned int width = mode_cmd->width / (i ? info->hsub : 1);
88 unsigned int height = mode_cmd->height / (i ? info->vsub : 1);
89 unsigned int min_size;
91 obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]);
93 DRM_DEV_ERROR(dev->dev,
94 "Failed to lookup GEM object\n");
96 goto err_gem_object_unreference;
99 min_size = (height - 1) * mode_cmd->pitches[i] +
100 mode_cmd->offsets[i] +
101 width * info->cpp[i];
103 if (obj->size < min_size) {
104 drm_gem_object_put_unlocked(obj);
106 goto err_gem_object_unreference;
111 fb = rockchip_fb_alloc(dev, mode_cmd, objs, i);
114 goto err_gem_object_unreference;
119 err_gem_object_unreference:
120 for (i--; i >= 0; i--)
121 drm_gem_object_put_unlocked(objs[i]);
126 rockchip_atomic_helper_commit_tail_rpm(struct drm_atomic_state *old_state)
128 struct drm_device *dev = old_state->dev;
130 rockchip_drm_psr_inhibit_get_state(old_state);
132 drm_atomic_helper_commit_modeset_disables(dev, old_state);
134 drm_atomic_helper_commit_modeset_enables(dev, old_state);
136 drm_atomic_helper_commit_planes(dev, old_state,
137 DRM_PLANE_COMMIT_ACTIVE_ONLY);
139 rockchip_drm_psr_inhibit_put_state(old_state);
141 drm_atomic_helper_commit_hw_done(old_state);
143 drm_atomic_helper_wait_for_vblanks(dev, old_state);
145 drm_atomic_helper_cleanup_planes(dev, old_state);
148 static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
149 .atomic_commit_tail = rockchip_atomic_helper_commit_tail_rpm,
152 static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
153 .fb_create = rockchip_user_fb_create,
154 .output_poll_changed = drm_fb_helper_output_poll_changed,
155 .atomic_check = drm_atomic_helper_check,
156 .atomic_commit = drm_atomic_helper_commit,
159 struct drm_framebuffer *
160 rockchip_drm_framebuffer_init(struct drm_device *dev,
161 const struct drm_mode_fb_cmd2 *mode_cmd,
162 struct drm_gem_object *obj)
164 struct drm_framebuffer *fb;
166 fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
173 void rockchip_drm_mode_config_init(struct drm_device *dev)
175 dev->mode_config.min_width = 0;
176 dev->mode_config.min_height = 0;
179 * set max width and height as default value(4096x4096).
180 * this value would be used to check framebuffer size limitation
181 * at drm_mode_addfb().
183 dev->mode_config.max_width = 4096;
184 dev->mode_config.max_height = 4096;
186 dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;
187 dev->mode_config.helper_private = &rockchip_mode_config_helpers;