Commit | Line | Data |
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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> |
0519f9a1 | 21 | #include <uapi/drm/exynos_drm.h> |
1c248b7d | 22 | |
7db3eba6 | 23 | #include "exynos_drm_drv.h" |
1c248b7d | 24 | #include "exynos_drm_fb.h" |
25928a39 | 25 | #include "exynos_drm_fbdev.h" |
0519f9a1 | 26 | #include "exynos_drm_iommu.h" |
080be03d | 27 | #include "exynos_drm_crtc.h" |
1c248b7d ID |
28 | |
29 | #define to_exynos_fb(x) container_of(x, struct exynos_drm_fb, fb) | |
30 | ||
31 | /* | |
32 | * exynos specific framebuffer structure. | |
33 | * | |
34 | * @fb: drm framebuffer obejct. | |
813fd67b | 35 | * @exynos_gem: array of exynos specific gem object containing a gem object. |
1c248b7d ID |
36 | */ |
37 | struct exynos_drm_fb { | |
813fd67b JS |
38 | struct drm_framebuffer fb; |
39 | struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER]; | |
0488f50e | 40 | dma_addr_t dma_addr[MAX_FB_BUFFER]; |
1c248b7d ID |
41 | }; |
42 | ||
0519f9a1 | 43 | static int check_fb_gem_memory_type(struct drm_device *drm_dev, |
813fd67b | 44 | struct exynos_drm_gem *exynos_gem) |
0519f9a1 ID |
45 | { |
46 | unsigned int flags; | |
47 | ||
48 | /* | |
49 | * if exynos drm driver supports iommu then framebuffer can use | |
50 | * all the buffer types. | |
51 | */ | |
52 | if (is_drm_iommu_supported(drm_dev)) | |
53 | return 0; | |
54 | ||
813fd67b | 55 | flags = exynos_gem->flags; |
0519f9a1 ID |
56 | |
57 | /* | |
58 | * without iommu support, not support physically non-continuous memory | |
59 | * for framebuffer. | |
60 | */ | |
61 | if (IS_NONCONTIG_BUFFER(flags)) { | |
62 | DRM_ERROR("cannot use this gem memory type for fb.\n"); | |
63 | return -EINVAL; | |
64 | } | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
1c248b7d ID |
69 | static void exynos_drm_fb_destroy(struct drm_framebuffer *fb) |
70 | { | |
71 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
07b6835f | 72 | unsigned int i; |
1c248b7d | 73 | |
1c248b7d ID |
74 | drm_framebuffer_cleanup(fb); |
75 | ||
813fd67b | 76 | for (i = 0; i < ARRAY_SIZE(exynos_fb->exynos_gem); i++) { |
07b6835f LP |
77 | struct drm_gem_object *obj; |
78 | ||
813fd67b | 79 | if (exynos_fb->exynos_gem[i] == NULL) |
07b6835f LP |
80 | continue; |
81 | ||
813fd67b | 82 | obj = &exynos_fb->exynos_gem[i]->base; |
07b6835f LP |
83 | drm_gem_object_unreference_unlocked(obj); |
84 | } | |
85 | ||
1c248b7d ID |
86 | kfree(exynos_fb); |
87 | exynos_fb = NULL; | |
88 | } | |
89 | ||
90 | static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb, | |
91 | struct drm_file *file_priv, | |
92 | unsigned int *handle) | |
93 | { | |
94 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
95 | ||
1c248b7d | 96 | return drm_gem_handle_create(file_priv, |
813fd67b | 97 | &exynos_fb->exynos_gem[0]->base, handle); |
1c248b7d ID |
98 | } |
99 | ||
100 | static int exynos_drm_fb_dirty(struct drm_framebuffer *fb, | |
101 | struct drm_file *file_priv, unsigned flags, | |
102 | unsigned color, struct drm_clip_rect *clips, | |
103 | unsigned num_clips) | |
104 | { | |
1c248b7d ID |
105 | /* TODO */ |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
800ba2b5 | 110 | static const struct drm_framebuffer_funcs exynos_drm_fb_funcs = { |
1c248b7d ID |
111 | .destroy = exynos_drm_fb_destroy, |
112 | .create_handle = exynos_drm_fb_create_handle, | |
113 | .dirty = exynos_drm_fb_dirty, | |
114 | }; | |
115 | ||
e1533c08 JS |
116 | struct drm_framebuffer * |
117 | exynos_drm_framebuffer_init(struct drm_device *dev, | |
1eb83451 | 118 | const struct drm_mode_fb_cmd2 *mode_cmd, |
813fd67b | 119 | struct exynos_drm_gem **exynos_gem, |
d56125af | 120 | int count) |
1c248b7d ID |
121 | { |
122 | struct exynos_drm_fb *exynos_fb; | |
d56125af | 123 | int i; |
1c248b7d ID |
124 | int ret; |
125 | ||
1c248b7d | 126 | exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); |
38bb5253 | 127 | if (!exynos_fb) |
1c248b7d | 128 | return ERR_PTR(-ENOMEM); |
1c248b7d | 129 | |
d56125af | 130 | for (i = 0; i < count; i++) { |
813fd67b | 131 | ret = check_fb_gem_memory_type(dev, exynos_gem[i]); |
d56125af JS |
132 | if (ret < 0) |
133 | goto err; | |
134 | ||
813fd67b | 135 | exynos_fb->exynos_gem[i] = exynos_gem[i]; |
0488f50e MS |
136 | exynos_fb->dma_addr[i] = exynos_gem[i]->dma_addr |
137 | + mode_cmd->offsets[i]; | |
d56125af JS |
138 | } |
139 | ||
140 | drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); | |
94e30d93 | 141 | |
e1533c08 | 142 | ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); |
d56125af | 143 | if (ret < 0) { |
e1533c08 | 144 | DRM_ERROR("failed to initialize framebuffer\n"); |
d56125af | 145 | goto err; |
1c248b7d ID |
146 | } |
147 | ||
e1533c08 | 148 | return &exynos_fb->fb; |
d56125af JS |
149 | |
150 | err: | |
151 | kfree(exynos_fb); | |
152 | return ERR_PTR(ret); | |
1c248b7d ID |
153 | } |
154 | ||
e1533c08 JS |
155 | static struct drm_framebuffer * |
156 | exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
1eb83451 | 157 | const struct drm_mode_fb_cmd2 *mode_cmd) |
1c248b7d | 158 | { |
813fd67b | 159 | struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER]; |
e1533c08 | 160 | struct drm_gem_object *obj; |
8d31758e JS |
161 | struct drm_framebuffer *fb; |
162 | int i; | |
163 | int ret; | |
229d3534 | 164 | |
8d31758e | 165 | for (i = 0; i < drm_format_num_planes(mode_cmd->pixel_format); i++) { |
229d3534 | 166 | obj = drm_gem_object_lookup(dev, file_priv, |
8d31758e | 167 | mode_cmd->handles[i]); |
229d3534 SWK |
168 | if (!obj) { |
169 | DRM_ERROR("failed to lookup gem object\n"); | |
979c0c7e | 170 | ret = -ENOENT; |
dcbb85a1 | 171 | goto err; |
229d3534 SWK |
172 | } |
173 | ||
813fd67b | 174 | exynos_gem[i] = to_exynos_gem(obj); |
229d3534 SWK |
175 | } |
176 | ||
813fd67b | 177 | fb = exynos_drm_framebuffer_init(dev, mode_cmd, exynos_gem, i); |
8d31758e JS |
178 | if (IS_ERR(fb)) { |
179 | ret = PTR_ERR(fb); | |
dcbb85a1 | 180 | goto err; |
f2c0095a DV |
181 | } |
182 | ||
8d31758e | 183 | return fb; |
979c0c7e | 184 | |
dcbb85a1 | 185 | err: |
8d31758e | 186 | while (i--) |
813fd67b | 187 | drm_gem_object_unreference_unlocked(&exynos_gem[i]->base); |
979c0c7e | 188 | |
979c0c7e | 189 | return ERR_PTR(ret); |
1c248b7d ID |
190 | } |
191 | ||
0488f50e | 192 | dma_addr_t exynos_drm_fb_dma_addr(struct drm_framebuffer *fb, int index) |
1c248b7d ID |
193 | { |
194 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
1c248b7d | 195 | |
229d3534 | 196 | if (index >= MAX_FB_BUFFER) |
0488f50e | 197 | return DMA_ERROR_CODE; |
229d3534 | 198 | |
0488f50e | 199 | return exynos_fb->dma_addr[index]; |
1c248b7d ID |
200 | } |
201 | ||
e6ecefaa | 202 | static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = { |
e1533c08 | 203 | .fb_create = exynos_user_fb_create, |
7db3eba6 | 204 | .output_poll_changed = exynos_drm_output_poll_changed, |
910874a8 | 205 | .atomic_check = drm_atomic_helper_check, |
9d5ab6a0 | 206 | .atomic_commit = exynos_atomic_commit, |
1c248b7d ID |
207 | }; |
208 | ||
209 | void exynos_drm_mode_config_init(struct drm_device *dev) | |
210 | { | |
211 | dev->mode_config.min_width = 0; | |
212 | dev->mode_config.min_height = 0; | |
213 | ||
214 | /* | |
215 | * set max width and height as default value(4096x4096). | |
216 | * this value would be used to check framebuffer size limitation | |
217 | * at drm_mode_addfb(). | |
218 | */ | |
219 | dev->mode_config.max_width = 4096; | |
220 | dev->mode_config.max_height = 4096; | |
221 | ||
222 | dev->mode_config.funcs = &exynos_drm_mode_config_funcs; | |
223 | } |