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> |
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" |
1c248b7d | 26 | #include "exynos_drm_gem.h" |
0519f9a1 | 27 | #include "exynos_drm_iommu.h" |
080be03d | 28 | #include "exynos_drm_crtc.h" |
1c248b7d ID |
29 | |
30 | #define to_exynos_fb(x) container_of(x, struct exynos_drm_fb, fb) | |
31 | ||
32 | /* | |
33 | * exynos specific framebuffer structure. | |
34 | * | |
35 | * @fb: drm framebuffer obejct. | |
01ed8126 | 36 | * @buf_cnt: a buffer count to drm framebuffer. |
229d3534 | 37 | * @exynos_gem_obj: array of exynos specific gem object containing a gem object. |
1c248b7d ID |
38 | */ |
39 | struct exynos_drm_fb { | |
40 | struct drm_framebuffer fb; | |
01ed8126 | 41 | unsigned int buf_cnt; |
229d3534 | 42 | struct exynos_drm_gem_obj *exynos_gem_obj[MAX_FB_BUFFER]; |
1c248b7d ID |
43 | }; |
44 | ||
0519f9a1 ID |
45 | static int check_fb_gem_memory_type(struct drm_device *drm_dev, |
46 | struct exynos_drm_gem_obj *exynos_gem_obj) | |
47 | { | |
48 | unsigned int flags; | |
49 | ||
50 | /* | |
51 | * if exynos drm driver supports iommu then framebuffer can use | |
52 | * all the buffer types. | |
53 | */ | |
54 | if (is_drm_iommu_supported(drm_dev)) | |
55 | return 0; | |
56 | ||
57 | flags = exynos_gem_obj->flags; | |
58 | ||
59 | /* | |
60 | * without iommu support, not support physically non-continuous memory | |
61 | * for framebuffer. | |
62 | */ | |
63 | if (IS_NONCONTIG_BUFFER(flags)) { | |
64 | DRM_ERROR("cannot use this gem memory type for fb.\n"); | |
65 | return -EINVAL; | |
66 | } | |
67 | ||
68 | return 0; | |
69 | } | |
70 | ||
1c248b7d ID |
71 | static void exynos_drm_fb_destroy(struct drm_framebuffer *fb) |
72 | { | |
73 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
07b6835f | 74 | unsigned int i; |
1c248b7d | 75 | |
1daa892c | 76 | /* make sure that overlay data are updated before relesing fb. */ |
080be03d | 77 | exynos_drm_crtc_complete_scanout(fb); |
1daa892c | 78 | |
1c248b7d ID |
79 | drm_framebuffer_cleanup(fb); |
80 | ||
07b6835f LP |
81 | for (i = 0; i < ARRAY_SIZE(exynos_fb->exynos_gem_obj); i++) { |
82 | struct drm_gem_object *obj; | |
83 | ||
84 | if (exynos_fb->exynos_gem_obj[i] == NULL) | |
85 | continue; | |
86 | ||
87 | obj = &exynos_fb->exynos_gem_obj[i]->base; | |
88 | drm_gem_object_unreference_unlocked(obj); | |
89 | } | |
90 | ||
1c248b7d ID |
91 | kfree(exynos_fb); |
92 | exynos_fb = NULL; | |
93 | } | |
94 | ||
95 | static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb, | |
96 | struct drm_file *file_priv, | |
97 | unsigned int *handle) | |
98 | { | |
99 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
100 | ||
b9ede277 ID |
101 | /* This fb should have only one gem object. */ |
102 | if (WARN_ON(exynos_fb->buf_cnt != 1)) | |
103 | return -EINVAL; | |
104 | ||
1c248b7d | 105 | return drm_gem_handle_create(file_priv, |
229d3534 | 106 | &exynos_fb->exynos_gem_obj[0]->base, handle); |
1c248b7d ID |
107 | } |
108 | ||
109 | static int exynos_drm_fb_dirty(struct drm_framebuffer *fb, | |
110 | struct drm_file *file_priv, unsigned flags, | |
111 | unsigned color, struct drm_clip_rect *clips, | |
112 | unsigned num_clips) | |
113 | { | |
1c248b7d ID |
114 | /* TODO */ |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | static struct drm_framebuffer_funcs exynos_drm_fb_funcs = { | |
120 | .destroy = exynos_drm_fb_destroy, | |
121 | .create_handle = exynos_drm_fb_create_handle, | |
122 | .dirty = exynos_drm_fb_dirty, | |
123 | }; | |
124 | ||
01ed8126 ID |
125 | void exynos_drm_fb_set_buf_cnt(struct drm_framebuffer *fb, |
126 | unsigned int cnt) | |
127 | { | |
128 | struct exynos_drm_fb *exynos_fb; | |
129 | ||
130 | exynos_fb = to_exynos_fb(fb); | |
131 | ||
132 | exynos_fb->buf_cnt = cnt; | |
133 | } | |
134 | ||
135 | unsigned int exynos_drm_fb_get_buf_cnt(struct drm_framebuffer *fb) | |
136 | { | |
137 | struct exynos_drm_fb *exynos_fb; | |
138 | ||
139 | exynos_fb = to_exynos_fb(fb); | |
140 | ||
141 | return exynos_fb->buf_cnt; | |
142 | } | |
143 | ||
e1533c08 JS |
144 | struct drm_framebuffer * |
145 | exynos_drm_framebuffer_init(struct drm_device *dev, | |
146 | struct drm_mode_fb_cmd2 *mode_cmd, | |
147 | struct drm_gem_object *obj) | |
1c248b7d ID |
148 | { |
149 | struct exynos_drm_fb *exynos_fb; | |
0519f9a1 | 150 | struct exynos_drm_gem_obj *exynos_gem_obj; |
1c248b7d ID |
151 | int ret; |
152 | ||
0519f9a1 ID |
153 | exynos_gem_obj = to_exynos_gem_obj(obj); |
154 | ||
155 | ret = check_fb_gem_memory_type(dev, exynos_gem_obj); | |
7ded8588 TJ |
156 | if (ret < 0) |
157 | return ERR_PTR(ret); | |
0519f9a1 | 158 | |
1c248b7d | 159 | exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); |
38bb5253 | 160 | if (!exynos_fb) |
1c248b7d | 161 | return ERR_PTR(-ENOMEM); |
1c248b7d | 162 | |
f2c0095a | 163 | drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); |
0519f9a1 ID |
164 | exynos_fb->exynos_gem_obj[0] = exynos_gem_obj; |
165 | ||
e1533c08 | 166 | ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); |
1c248b7d | 167 | if (ret) { |
849b4318 | 168 | kfree(exynos_fb); |
e1533c08 JS |
169 | DRM_ERROR("failed to initialize framebuffer\n"); |
170 | return ERR_PTR(ret); | |
1c248b7d ID |
171 | } |
172 | ||
e1533c08 | 173 | return &exynos_fb->fb; |
1c248b7d ID |
174 | } |
175 | ||
e1533c08 JS |
176 | static struct drm_framebuffer * |
177 | exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
178 | struct drm_mode_fb_cmd2 *mode_cmd) | |
1c248b7d | 179 | { |
e1533c08 | 180 | struct drm_gem_object *obj; |
979c0c7e | 181 | struct exynos_drm_gem_obj *exynos_gem_obj; |
229d3534 | 182 | struct exynos_drm_fb *exynos_fb; |
f2c0095a | 183 | int i, ret; |
e1533c08 | 184 | |
f2c0095a | 185 | exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); |
38bb5253 | 186 | if (!exynos_fb) |
f2c0095a | 187 | return ERR_PTR(-ENOMEM); |
229d3534 | 188 | |
979c0c7e YC |
189 | obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]); |
190 | if (!obj) { | |
191 | DRM_ERROR("failed to lookup gem object\n"); | |
192 | ret = -ENOENT; | |
193 | goto err_free; | |
194 | } | |
195 | ||
f2c0095a DV |
196 | drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); |
197 | exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj); | |
d10ebb9f | 198 | exynos_fb->buf_cnt = drm_format_num_planes(mode_cmd->pixel_format); |
01ed8126 ID |
199 | |
200 | DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt); | |
229d3534 | 201 | |
01ed8126 | 202 | for (i = 1; i < exynos_fb->buf_cnt; i++) { |
229d3534 SWK |
203 | obj = drm_gem_object_lookup(dev, file_priv, |
204 | mode_cmd->handles[i]); | |
205 | if (!obj) { | |
206 | DRM_ERROR("failed to lookup gem object\n"); | |
979c0c7e YC |
207 | ret = -ENOENT; |
208 | exynos_fb->buf_cnt = i; | |
209 | goto err_unreference; | |
229d3534 SWK |
210 | } |
211 | ||
0519f9a1 | 212 | exynos_gem_obj = to_exynos_gem_obj(obj); |
979c0c7e | 213 | exynos_fb->exynos_gem_obj[i] = exynos_gem_obj; |
0519f9a1 ID |
214 | |
215 | ret = check_fb_gem_memory_type(dev, exynos_gem_obj); | |
7ded8588 | 216 | if (ret < 0) |
979c0c7e | 217 | goto err_unreference; |
229d3534 SWK |
218 | } |
219 | ||
f2c0095a DV |
220 | ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); |
221 | if (ret) { | |
979c0c7e YC |
222 | DRM_ERROR("failed to init framebuffer.\n"); |
223 | goto err_unreference; | |
f2c0095a DV |
224 | } |
225 | ||
226 | return &exynos_fb->fb; | |
979c0c7e YC |
227 | |
228 | err_unreference: | |
229 | for (i = 0; i < exynos_fb->buf_cnt; i++) { | |
230 | struct drm_gem_object *obj; | |
231 | ||
232 | obj = &exynos_fb->exynos_gem_obj[i]->base; | |
233 | if (obj) | |
234 | drm_gem_object_unreference_unlocked(obj); | |
235 | } | |
236 | err_free: | |
237 | kfree(exynos_fb); | |
238 | return ERR_PTR(ret); | |
1c248b7d ID |
239 | } |
240 | ||
2a8cb489 JS |
241 | struct exynos_drm_gem_obj *exynos_drm_fb_gem_obj(struct drm_framebuffer *fb, |
242 | int index) | |
1c248b7d ID |
243 | { |
244 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
2a8cb489 | 245 | struct exynos_drm_gem_obj *obj; |
1c248b7d | 246 | |
229d3534 SWK |
247 | if (index >= MAX_FB_BUFFER) |
248 | return NULL; | |
249 | ||
2a8cb489 JS |
250 | obj = exynos_fb->exynos_gem_obj[index]; |
251 | if (!obj) | |
19c8b834 | 252 | return NULL; |
1c248b7d | 253 | |
2a8cb489 | 254 | DRM_DEBUG_KMS("dma_addr = 0x%lx\n", (unsigned long)obj->dma_addr); |
1c248b7d | 255 | |
2a8cb489 | 256 | return obj; |
1c248b7d ID |
257 | } |
258 | ||
7db3eba6 SWK |
259 | static void exynos_drm_output_poll_changed(struct drm_device *dev) |
260 | { | |
261 | struct exynos_drm_private *private = dev->dev_private; | |
262 | struct drm_fb_helper *fb_helper = private->fb_helper; | |
263 | ||
264 | if (fb_helper) | |
265 | drm_fb_helper_hotplug_event(fb_helper); | |
25928a39 AH |
266 | else |
267 | exynos_drm_fbdev_init(dev); | |
7db3eba6 SWK |
268 | } |
269 | ||
9d5ab6a0 GP |
270 | static int exynos_atomic_commit(struct drm_device *dev, |
271 | struct drm_atomic_state *state, | |
272 | bool async) | |
273 | { | |
d6562a29 GP |
274 | int ret; |
275 | ||
276 | ret = drm_atomic_helper_prepare_planes(dev, state); | |
277 | if (ret) | |
278 | return ret; | |
279 | ||
280 | /* This is the point of no return */ | |
281 | ||
282 | drm_atomic_helper_swap_state(dev, state); | |
283 | ||
284 | drm_atomic_helper_commit_modeset_disables(dev, state); | |
285 | ||
286 | drm_atomic_helper_commit_modeset_enables(dev, state); | |
287 | ||
288 | /* | |
289 | * Exynos can't update planes with CRTCs and encoders disabled, | |
290 | * its updates routines, specially for FIMD, requires the clocks | |
291 | * to be enabled. So it is necessary to handle the modeset operations | |
292 | * *before* the commit_planes() step, this way it will always | |
293 | * have the relevant clocks enabled to perform the update. | |
294 | */ | |
295 | ||
296 | drm_atomic_helper_commit_planes(dev, state); | |
297 | ||
d6562a29 GP |
298 | drm_atomic_helper_cleanup_planes(dev, state); |
299 | ||
300 | drm_atomic_state_free(state); | |
301 | ||
302 | return 0; | |
9d5ab6a0 GP |
303 | } |
304 | ||
e6ecefaa | 305 | static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = { |
e1533c08 | 306 | .fb_create = exynos_user_fb_create, |
7db3eba6 | 307 | .output_poll_changed = exynos_drm_output_poll_changed, |
910874a8 | 308 | .atomic_check = drm_atomic_helper_check, |
9d5ab6a0 | 309 | .atomic_commit = exynos_atomic_commit, |
1c248b7d ID |
310 | }; |
311 | ||
312 | void exynos_drm_mode_config_init(struct drm_device *dev) | |
313 | { | |
314 | dev->mode_config.min_width = 0; | |
315 | dev->mode_config.min_height = 0; | |
316 | ||
317 | /* | |
318 | * set max width and height as default value(4096x4096). | |
319 | * this value would be used to check framebuffer size limitation | |
320 | * at drm_mode_addfb(). | |
321 | */ | |
322 | dev->mode_config.max_width = 4096; | |
323 | dev->mode_config.max_height = 4096; | |
324 | ||
325 | dev->mode_config.funcs = &exynos_drm_mode_config_funcs; | |
326 | } |