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Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1c248b7d ID |
2 | /* exynos_drm_fb.c |
3 | * | |
4 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. | |
5 | * Authors: | |
6 | * Inki Dae <inki.dae@samsung.com> | |
7 | * Joonyoung Shim <jy0922.shim@samsung.com> | |
8 | * Seung-Woo Kim <sw0312.kim@samsung.com> | |
1c248b7d ID |
9 | */ |
10 | ||
d6562a29 | 11 | #include <drm/drm_atomic.h> |
910874a8 | 12 | #include <drm/drm_atomic_helper.h> |
fcd70cd3 DV |
13 | #include <drm/drm_crtc.h> |
14 | #include <drm/drm_fb_helper.h> | |
2bda34d7 | 15 | #include <drm/drm_fourcc.h> |
b11954a6 | 16 | #include <drm/drm_gem_framebuffer_helper.h> |
fcd70cd3 | 17 | #include <drm/drm_probe_helper.h> |
2bda34d7 | 18 | #include <drm/exynos_drm.h> |
1c248b7d | 19 | |
2bda34d7 | 20 | #include "exynos_drm_crtc.h" |
7db3eba6 | 21 | #include "exynos_drm_drv.h" |
1c248b7d | 22 | #include "exynos_drm_fb.h" |
25928a39 | 23 | #include "exynos_drm_fbdev.h" |
1c248b7d | 24 | |
0519f9a1 | 25 | static int check_fb_gem_memory_type(struct drm_device *drm_dev, |
813fd67b | 26 | struct exynos_drm_gem *exynos_gem) |
0519f9a1 ID |
27 | { |
28 | unsigned int flags; | |
29 | ||
30 | /* | |
31 | * if exynos drm driver supports iommu then framebuffer can use | |
32 | * all the buffer types. | |
33 | */ | |
34 | if (is_drm_iommu_supported(drm_dev)) | |
35 | return 0; | |
36 | ||
813fd67b | 37 | flags = exynos_gem->flags; |
0519f9a1 ID |
38 | |
39 | /* | |
6244bd65 SK |
40 | * Physically non-contiguous memory type for framebuffer is not |
41 | * supported without IOMMU. | |
0519f9a1 ID |
42 | */ |
43 | if (IS_NONCONTIG_BUFFER(flags)) { | |
6f83d208 ID |
44 | DRM_DEV_ERROR(drm_dev->dev, |
45 | "Non-contiguous GEM memory is not supported.\n"); | |
0519f9a1 ID |
46 | return -EINVAL; |
47 | } | |
48 | ||
49 | return 0; | |
50 | } | |
51 | ||
800ba2b5 | 52 | static const struct drm_framebuffer_funcs exynos_drm_fb_funcs = { |
b11954a6 DS |
53 | .destroy = drm_gem_fb_destroy, |
54 | .create_handle = drm_gem_fb_create_handle, | |
1c248b7d ID |
55 | }; |
56 | ||
e1533c08 JS |
57 | struct drm_framebuffer * |
58 | exynos_drm_framebuffer_init(struct drm_device *dev, | |
1eb83451 | 59 | const struct drm_mode_fb_cmd2 *mode_cmd, |
813fd67b | 60 | struct exynos_drm_gem **exynos_gem, |
d56125af | 61 | int count) |
1c248b7d | 62 | { |
ff059fcb | 63 | struct drm_framebuffer *fb; |
d56125af | 64 | int i; |
1c248b7d ID |
65 | int ret; |
66 | ||
ff059fcb DS |
67 | fb = kzalloc(sizeof(*fb), GFP_KERNEL); |
68 | if (!fb) | |
1c248b7d | 69 | return ERR_PTR(-ENOMEM); |
1c248b7d | 70 | |
d56125af | 71 | for (i = 0; i < count; i++) { |
813fd67b | 72 | ret = check_fb_gem_memory_type(dev, exynos_gem[i]); |
d56125af JS |
73 | if (ret < 0) |
74 | goto err; | |
75 | ||
ff059fcb | 76 | fb->obj[i] = &exynos_gem[i]->base; |
d56125af JS |
77 | } |
78 | ||
ff059fcb | 79 | drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd); |
94e30d93 | 80 | |
ff059fcb | 81 | ret = drm_framebuffer_init(dev, fb, &exynos_drm_fb_funcs); |
d56125af | 82 | if (ret < 0) { |
6f83d208 ID |
83 | DRM_DEV_ERROR(dev->dev, |
84 | "failed to initialize framebuffer\n"); | |
d56125af | 85 | goto err; |
1c248b7d ID |
86 | } |
87 | ||
ff059fcb | 88 | return fb; |
d56125af JS |
89 | |
90 | err: | |
ff059fcb | 91 | kfree(fb); |
d56125af | 92 | return ERR_PTR(ret); |
1c248b7d ID |
93 | } |
94 | ||
e1533c08 JS |
95 | static struct drm_framebuffer * |
96 | exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
1eb83451 | 97 | const struct drm_mode_fb_cmd2 *mode_cmd) |
1c248b7d | 98 | { |
1899bd57 | 99 | const struct drm_format_info *info = drm_get_format_info(dev, mode_cmd); |
813fd67b | 100 | struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER]; |
8d31758e JS |
101 | struct drm_framebuffer *fb; |
102 | int i; | |
103 | int ret; | |
229d3534 | 104 | |
1899bd57 MS |
105 | for (i = 0; i < info->num_planes; i++) { |
106 | unsigned int height = (i == 0) ? mode_cmd->height : | |
107 | DIV_ROUND_UP(mode_cmd->height, info->vsub); | |
108 | unsigned long size = height * mode_cmd->pitches[i] + | |
109 | mode_cmd->offsets[i]; | |
110 | ||
e978de54 MS |
111 | exynos_gem[i] = exynos_drm_gem_get(file_priv, |
112 | mode_cmd->handles[i]); | |
113 | if (!exynos_gem[i]) { | |
6f83d208 ID |
114 | DRM_DEV_ERROR(dev->dev, |
115 | "failed to lookup gem object\n"); | |
979c0c7e | 116 | ret = -ENOENT; |
dcbb85a1 | 117 | goto err; |
229d3534 SWK |
118 | } |
119 | ||
1899bd57 MS |
120 | if (size > exynos_gem[i]->size) { |
121 | i++; | |
122 | ret = -EINVAL; | |
123 | goto err; | |
124 | } | |
229d3534 SWK |
125 | } |
126 | ||
813fd67b | 127 | fb = exynos_drm_framebuffer_init(dev, mode_cmd, exynos_gem, i); |
8d31758e JS |
128 | if (IS_ERR(fb)) { |
129 | ret = PTR_ERR(fb); | |
dcbb85a1 | 130 | goto err; |
f2c0095a DV |
131 | } |
132 | ||
8d31758e | 133 | return fb; |
979c0c7e | 134 | |
dcbb85a1 | 135 | err: |
8d31758e | 136 | while (i--) |
e978de54 | 137 | exynos_drm_gem_put(exynos_gem[i]); |
979c0c7e | 138 | |
979c0c7e | 139 | return ERR_PTR(ret); |
1c248b7d ID |
140 | } |
141 | ||
0488f50e | 142 | dma_addr_t exynos_drm_fb_dma_addr(struct drm_framebuffer *fb, int index) |
1c248b7d | 143 | { |
7b30508f | 144 | struct exynos_drm_gem *exynos_gem; |
1c248b7d | 145 | |
e0c7a510 CH |
146 | if (WARN_ON_ONCE(index >= MAX_FB_BUFFER)) |
147 | return 0; | |
229d3534 | 148 | |
7b30508f DS |
149 | exynos_gem = to_exynos_gem(fb->obj[index]); |
150 | return exynos_gem->dma_addr + fb->offsets[index]; | |
1c248b7d ID |
151 | } |
152 | ||
41cbf0fd | 153 | static struct drm_mode_config_helper_funcs exynos_drm_mode_config_helpers = { |
81a099ac | 154 | .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, |
41cbf0fd ID |
155 | }; |
156 | ||
e6ecefaa | 157 | static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = { |
e1533c08 | 158 | .fb_create = exynos_user_fb_create, |
d2936153 | 159 | .output_poll_changed = drm_fb_helper_output_poll_changed, |
a7da5cfe | 160 | .atomic_check = drm_atomic_helper_check, |
41cbf0fd | 161 | .atomic_commit = drm_atomic_helper_commit, |
1c248b7d ID |
162 | }; |
163 | ||
164 | void exynos_drm_mode_config_init(struct drm_device *dev) | |
165 | { | |
166 | dev->mode_config.min_width = 0; | |
167 | dev->mode_config.min_height = 0; | |
168 | ||
169 | /* | |
170 | * set max width and height as default value(4096x4096). | |
171 | * this value would be used to check framebuffer size limitation | |
172 | * at drm_mode_addfb(). | |
173 | */ | |
174 | dev->mode_config.max_width = 4096; | |
175 | dev->mode_config.max_height = 4096; | |
176 | ||
177 | dev->mode_config.funcs = &exynos_drm_mode_config_funcs; | |
41cbf0fd | 178 | dev->mode_config.helper_private = &exynos_drm_mode_config_helpers; |
f40031c2 TJ |
179 | |
180 | dev->mode_config.allow_fb_modifiers = true; | |
a7da5cfe PU |
181 | |
182 | dev->mode_config.normalize_zpos = true; | |
1c248b7d | 183 | } |