1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
/*
* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
* Author:Mark Yao <mark.yao@rock-chips.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/kernel.h>
#include <drm/drm.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_crtc_helper.h>
#include "rockchip_drm_drv.h"
#include "rockchip_drm_fb.h"
#include "rockchip_drm_gem.h"
#include "rockchip_drm_psr.h"
#define to_rockchip_fb(x) container_of(x, struct rockchip_drm_fb, fb)
struct rockchip_drm_fb {
struct drm_framebuffer fb;
struct drm_gem_object *obj[ROCKCHIP_MAX_FB_BUFFER];
};
struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb,
unsigned int plane)
{
struct rockchip_drm_fb *rk_fb = to_rockchip_fb(fb);
if (plane >= ROCKCHIP_MAX_FB_BUFFER)
return NULL;
return rk_fb->obj[plane];
}
static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
{
struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);
int i;
for (i = 0; i < ROCKCHIP_MAX_FB_BUFFER; i++)
drm_gem_object_put_unlocked(rockchip_fb->obj[i]);
drm_framebuffer_cleanup(fb);
kfree(rockchip_fb);
}
static int rockchip_drm_fb_create_handle(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int *handle)
{
struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb);
return drm_gem_handle_create(file_priv,
rockchip_fb->obj[0], handle);
}
static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb,
struct drm_file *file,
unsigned int flags, unsigned int color,
struct drm_clip_rect *clips,
unsigned int num_clips)
{
rockchip_drm_psr_flush_all(fb->dev);
return 0;
}
static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
.destroy = rockchip_drm_fb_destroy,
.create_handle = rockchip_drm_fb_create_handle,
.dirty = rockchip_drm_fb_dirty,
};
static struct rockchip_drm_fb *
rockchip_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object **obj, unsigned int num_planes)
{
struct rockchip_drm_fb *rockchip_fb;
int ret;
int i;
rockchip_fb = kzalloc(sizeof(*rockchip_fb), GFP_KERNEL);
if (!rockchip_fb)
return ERR_PTR(-ENOMEM);
drm_helper_mode_fill_fb_struct(dev, &rockchip_fb->fb, mode_cmd);
for (i = 0; i < num_planes; i++)
rockchip_fb->obj[i] = obj[i];
ret = drm_framebuffer_init(dev, &rockchip_fb->fb,
&rockchip_drm_fb_funcs);
if (ret) {
DRM_DEV_ERROR(dev->dev,
"Failed to initialize framebuffer: %d\n",
ret);
kfree(rockchip_fb);
return ERR_PTR(ret);
}
return rockchip_fb;
}
static struct drm_framebuffer *
rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
struct rockchip_drm_fb *rockchip_fb;
struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER];
struct drm_gem_object *obj;
unsigned int hsub;
unsigned int vsub;
int num_planes;
int ret;
int i;
hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format);
vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format);
num_planes = min(drm_format_num_planes(mode_cmd->pixel_format),
ROCKCHIP_MAX_FB_BUFFER);
for (i = 0; i < num_planes; i++) {
unsigned int width = mode_cmd->width / (i ? hsub : 1);
unsigned int height = mode_cmd->height / (i ? vsub : 1);
unsigned int min_size;
obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]);
if (!obj) {
DRM_DEV_ERROR(dev->dev,
"Failed to lookup GEM object\n");
ret = -ENXIO;
goto err_gem_object_unreference;
}
min_size = (height - 1) * mode_cmd->pitches[i] +
mode_cmd->offsets[i] +
width * drm_format_plane_cpp(mode_cmd->pixel_format, i);
if (obj->size < min_size) {
drm_gem_object_put_unlocked(obj);
ret = -EINVAL;
goto err_gem_object_unreference;
}
objs[i] = obj;
}
rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, objs, i);
if (IS_ERR(rockchip_fb)) {
ret = PTR_ERR(rockchip_fb);
goto err_gem_object_unreference;
}
return &rockchip_fb->fb;
err_gem_object_unreference:
for (i--; i >= 0; i--)
drm_gem_object_put_unlocked(objs[i]);
return ERR_PTR(ret);
}
static void rockchip_drm_output_poll_changed(struct drm_device *dev)
{
struct rockchip_drm_private *private = dev->dev_private;
drm_fb_helper_hotplug_event(&private->fbdev_helper);
}
static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
};
static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
.fb_create = rockchip_user_fb_create,
.output_poll_changed = rockchip_drm_output_poll_changed,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
struct drm_framebuffer *
rockchip_drm_framebuffer_init(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *obj)
{
struct rockchip_drm_fb *rockchip_fb;
rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
if (IS_ERR(rockchip_fb))
return ERR_CAST(rockchip_fb);
return &rockchip_fb->fb;
}
void rockchip_drm_mode_config_init(struct drm_device *dev)
{
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
/*
* set max width and height as default value(4096x4096).
* this value would be used to check framebuffer size limitation
* at drm_mode_addfb().
*/
dev->mode_config.max_width = 4096;
dev->mode_config.max_height = 4096;
dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;
dev->mode_config.helper_private = &rockchip_mode_config_helpers;
}
|
