Commit | Line | Data |
---|---|---|
1c248b7d ID |
1 | /* exynos_drm_fb.c |
2 | * | |
3 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. | |
4 | * Authors: | |
5 | * Inki Dae <inki.dae@samsung.com> | |
6 | * Joonyoung Shim <jy0922.shim@samsung.com> | |
7 | * Seung-Woo Kim <sw0312.kim@samsung.com> | |
8 | * | |
d81aecb5 ID |
9 | * This program is free software; you can redistribute it and/or modify it |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
1c248b7d ID |
13 | */ |
14 | ||
760285e7 DH |
15 | #include <drm/drmP.h> |
16 | #include <drm/drm_crtc.h> | |
17 | #include <drm/drm_crtc_helper.h> | |
18 | #include <drm/drm_fb_helper.h> | |
d6562a29 | 19 | #include <drm/drm_atomic.h> |
910874a8 | 20 | #include <drm/drm_atomic_helper.h> |
b11954a6 | 21 | #include <drm/drm_gem_framebuffer_helper.h> |
0519f9a1 | 22 | #include <uapi/drm/exynos_drm.h> |
1c248b7d | 23 | |
7db3eba6 | 24 | #include "exynos_drm_drv.h" |
1c248b7d | 25 | #include "exynos_drm_fb.h" |
25928a39 | 26 | #include "exynos_drm_fbdev.h" |
080be03d | 27 | #include "exynos_drm_crtc.h" |
1c248b7d | 28 | |
0519f9a1 | 29 | static int check_fb_gem_memory_type(struct drm_device *drm_dev, |
813fd67b | 30 | struct exynos_drm_gem *exynos_gem) |
0519f9a1 ID |
31 | { |
32 | unsigned int flags; | |
33 | ||
34 | /* | |
35 | * if exynos drm driver supports iommu then framebuffer can use | |
36 | * all the buffer types. | |
37 | */ | |
38 | if (is_drm_iommu_supported(drm_dev)) | |
39 | return 0; | |
40 | ||
813fd67b | 41 | flags = exynos_gem->flags; |
0519f9a1 ID |
42 | |
43 | /* | |
6244bd65 SK |
44 | * Physically non-contiguous memory type for framebuffer is not |
45 | * supported without IOMMU. | |
0519f9a1 ID |
46 | */ |
47 | if (IS_NONCONTIG_BUFFER(flags)) { | |
6244bd65 | 48 | DRM_ERROR("Non-contiguous GEM memory is not supported.\n"); |
0519f9a1 ID |
49 | return -EINVAL; |
50 | } | |
51 | ||
52 | return 0; | |
53 | } | |
54 | ||
800ba2b5 | 55 | static const struct drm_framebuffer_funcs exynos_drm_fb_funcs = { |
b11954a6 DS |
56 | .destroy = drm_gem_fb_destroy, |
57 | .create_handle = drm_gem_fb_create_handle, | |
1c248b7d ID |
58 | }; |
59 | ||
e1533c08 JS |
60 | struct drm_framebuffer * |
61 | exynos_drm_framebuffer_init(struct drm_device *dev, | |
1eb83451 | 62 | const struct drm_mode_fb_cmd2 *mode_cmd, |
813fd67b | 63 | struct exynos_drm_gem **exynos_gem, |
d56125af | 64 | int count) |
1c248b7d | 65 | { |
ff059fcb | 66 | struct drm_framebuffer *fb; |
d56125af | 67 | int i; |
1c248b7d ID |
68 | int ret; |
69 | ||
ff059fcb DS |
70 | fb = kzalloc(sizeof(*fb), GFP_KERNEL); |
71 | if (!fb) | |
1c248b7d | 72 | return ERR_PTR(-ENOMEM); |
1c248b7d | 73 | |
d56125af | 74 | for (i = 0; i < count; i++) { |
813fd67b | 75 | ret = check_fb_gem_memory_type(dev, exynos_gem[i]); |
d56125af JS |
76 | if (ret < 0) |
77 | goto err; | |
78 | ||
ff059fcb | 79 | fb->obj[i] = &exynos_gem[i]->base; |
d56125af JS |
80 | } |
81 | ||
ff059fcb | 82 | drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd); |
94e30d93 | 83 | |
ff059fcb | 84 | ret = drm_framebuffer_init(dev, fb, &exynos_drm_fb_funcs); |
d56125af | 85 | if (ret < 0) { |
e1533c08 | 86 | DRM_ERROR("failed to initialize framebuffer\n"); |
d56125af | 87 | goto err; |
1c248b7d ID |
88 | } |
89 | ||
ff059fcb | 90 | return fb; |
d56125af JS |
91 | |
92 | err: | |
ff059fcb | 93 | kfree(fb); |
d56125af | 94 | return ERR_PTR(ret); |
1c248b7d ID |
95 | } |
96 | ||
e1533c08 JS |
97 | static struct drm_framebuffer * |
98 | exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
1eb83451 | 99 | const struct drm_mode_fb_cmd2 *mode_cmd) |
1c248b7d | 100 | { |
1899bd57 | 101 | const struct drm_format_info *info = drm_get_format_info(dev, mode_cmd); |
813fd67b | 102 | struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER]; |
8d31758e JS |
103 | struct drm_framebuffer *fb; |
104 | int i; | |
105 | int ret; | |
229d3534 | 106 | |
1899bd57 MS |
107 | for (i = 0; i < info->num_planes; i++) { |
108 | unsigned int height = (i == 0) ? mode_cmd->height : | |
109 | DIV_ROUND_UP(mode_cmd->height, info->vsub); | |
110 | unsigned long size = height * mode_cmd->pitches[i] + | |
111 | mode_cmd->offsets[i]; | |
112 | ||
e978de54 MS |
113 | exynos_gem[i] = exynos_drm_gem_get(file_priv, |
114 | mode_cmd->handles[i]); | |
115 | if (!exynos_gem[i]) { | |
229d3534 | 116 | DRM_ERROR("failed to lookup gem object\n"); |
979c0c7e | 117 | ret = -ENOENT; |
dcbb85a1 | 118 | goto err; |
229d3534 SWK |
119 | } |
120 | ||
1899bd57 MS |
121 | if (size > exynos_gem[i]->size) { |
122 | i++; | |
123 | ret = -EINVAL; | |
124 | goto err; | |
125 | } | |
229d3534 SWK |
126 | } |
127 | ||
813fd67b | 128 | fb = exynos_drm_framebuffer_init(dev, mode_cmd, exynos_gem, i); |
8d31758e JS |
129 | if (IS_ERR(fb)) { |
130 | ret = PTR_ERR(fb); | |
dcbb85a1 | 131 | goto err; |
f2c0095a DV |
132 | } |
133 | ||
8d31758e | 134 | return fb; |
979c0c7e | 135 | |
dcbb85a1 | 136 | err: |
8d31758e | 137 | while (i--) |
e978de54 | 138 | exynos_drm_gem_put(exynos_gem[i]); |
979c0c7e | 139 | |
979c0c7e | 140 | return ERR_PTR(ret); |
1c248b7d ID |
141 | } |
142 | ||
0488f50e | 143 | dma_addr_t exynos_drm_fb_dma_addr(struct drm_framebuffer *fb, int index) |
1c248b7d | 144 | { |
7b30508f | 145 | struct exynos_drm_gem *exynos_gem; |
1c248b7d | 146 | |
e0c7a510 CH |
147 | if (WARN_ON_ONCE(index >= MAX_FB_BUFFER)) |
148 | return 0; | |
229d3534 | 149 | |
7b30508f DS |
150 | exynos_gem = to_exynos_gem(fb->obj[index]); |
151 | return exynos_gem->dma_addr + fb->offsets[index]; | |
1c248b7d ID |
152 | } |
153 | ||
41cbf0fd | 154 | static struct drm_mode_config_helper_funcs exynos_drm_mode_config_helpers = { |
81a099ac | 155 | .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, |
41cbf0fd ID |
156 | }; |
157 | ||
e6ecefaa | 158 | static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = { |
e1533c08 | 159 | .fb_create = exynos_user_fb_create, |
d2936153 | 160 | .output_poll_changed = drm_fb_helper_output_poll_changed, |
a7da5cfe | 161 | .atomic_check = drm_atomic_helper_check, |
41cbf0fd | 162 | .atomic_commit = drm_atomic_helper_commit, |
1c248b7d ID |
163 | }; |
164 | ||
165 | void exynos_drm_mode_config_init(struct drm_device *dev) | |
166 | { | |
167 | dev->mode_config.min_width = 0; | |
168 | dev->mode_config.min_height = 0; | |
169 | ||
170 | /* | |
171 | * set max width and height as default value(4096x4096). | |
172 | * this value would be used to check framebuffer size limitation | |
173 | * at drm_mode_addfb(). | |
174 | */ | |
175 | dev->mode_config.max_width = 4096; | |
176 | dev->mode_config.max_height = 4096; | |
177 | ||
178 | dev->mode_config.funcs = &exynos_drm_mode_config_funcs; | |
41cbf0fd | 179 | dev->mode_config.helper_private = &exynos_drm_mode_config_helpers; |
f40031c2 TJ |
180 | |
181 | dev->mode_config.allow_fb_modifiers = true; | |
a7da5cfe PU |
182 | |
183 | dev->mode_config.normalize_zpos = true; | |
1c248b7d | 184 | } |