Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[linux-2.6-block.git] / drivers / gpu / drm / rockchip / rockchip_drm_fb.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
4  * Author:Mark Yao <mark.yao@rock-chips.com>
5  */
6
7 #include <linux/kernel.h>
8
9 #include <drm/drm.h>
10 #include <drm/drm_atomic.h>
11 #include <drm/drm_damage_helper.h>
12 #include <drm/drm_fourcc.h>
13 #include <drm/drm_framebuffer.h>
14 #include <drm/drm_gem_framebuffer_helper.h>
15 #include <drm/drm_probe_helper.h>
16
17 #include "rockchip_drm_drv.h"
18 #include "rockchip_drm_fb.h"
19 #include "rockchip_drm_gem.h"
20
21 static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
22         .destroy       = drm_gem_fb_destroy,
23         .create_handle = drm_gem_fb_create_handle,
24         .dirty         = drm_atomic_helper_dirtyfb,
25 };
26
27 static const struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = {
28         .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
29 };
30
31 static struct drm_framebuffer *
32 rockchip_fb_create(struct drm_device *dev, struct drm_file *file,
33                    const struct drm_mode_fb_cmd2 *mode_cmd)
34 {
35         struct drm_afbc_framebuffer *afbc_fb;
36         const struct drm_format_info *info;
37         int ret;
38
39         info = drm_get_format_info(dev, mode_cmd);
40         if (!info)
41                 return ERR_PTR(-ENOMEM);
42
43         afbc_fb = kzalloc(sizeof(*afbc_fb), GFP_KERNEL);
44         if (!afbc_fb)
45                 return ERR_PTR(-ENOMEM);
46
47         ret = drm_gem_fb_init_with_funcs(dev, &afbc_fb->base, file, mode_cmd,
48                                          &rockchip_drm_fb_funcs);
49         if (ret) {
50                 kfree(afbc_fb);
51                 return ERR_PTR(ret);
52         }
53
54         if (drm_is_afbc(mode_cmd->modifier[0])) {
55                 int ret, i;
56
57                 ret = drm_gem_fb_afbc_init(dev, mode_cmd, afbc_fb);
58                 if (ret) {
59                         struct drm_gem_object **obj = afbc_fb->base.obj;
60
61                         for (i = 0; i < info->num_planes; ++i)
62                                 drm_gem_object_put(obj[i]);
63
64                         kfree(afbc_fb);
65                         return ERR_PTR(ret);
66                 }
67         }
68
69         return &afbc_fb->base;
70 }
71
72 static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
73         .fb_create = rockchip_fb_create,
74         .atomic_check = drm_atomic_helper_check,
75         .atomic_commit = drm_atomic_helper_commit,
76 };
77
78 void rockchip_drm_mode_config_init(struct drm_device *dev)
79 {
80         dev->mode_config.min_width = 0;
81         dev->mode_config.min_height = 0;
82
83         /*
84          * set max width and height as default value(4096x4096).
85          * this value would be used to check framebuffer size limitation
86          * at drm_mode_addfb().
87          */
88         dev->mode_config.max_width = 4096;
89         dev->mode_config.max_height = 4096;
90
91         dev->mode_config.funcs = &rockchip_drm_mode_config_funcs;
92         dev->mode_config.helper_private = &rockchip_mode_config_helpers;
93
94         dev->mode_config.normalize_zpos = true;
95 }