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> | |
0519f9a1 | 19 | #include <uapi/drm/exynos_drm.h> |
1c248b7d | 20 | |
7db3eba6 | 21 | #include "exynos_drm_drv.h" |
1c248b7d | 22 | #include "exynos_drm_fb.h" |
1c248b7d | 23 | #include "exynos_drm_gem.h" |
0519f9a1 | 24 | #include "exynos_drm_iommu.h" |
1daa892c | 25 | #include "exynos_drm_encoder.h" |
1c248b7d ID |
26 | |
27 | #define to_exynos_fb(x) container_of(x, struct exynos_drm_fb, fb) | |
28 | ||
29 | /* | |
30 | * exynos specific framebuffer structure. | |
31 | * | |
32 | * @fb: drm framebuffer obejct. | |
01ed8126 | 33 | * @buf_cnt: a buffer count to drm framebuffer. |
229d3534 | 34 | * @exynos_gem_obj: array of exynos specific gem object containing a gem object. |
1c248b7d ID |
35 | */ |
36 | struct exynos_drm_fb { | |
37 | struct drm_framebuffer fb; | |
01ed8126 | 38 | unsigned int buf_cnt; |
229d3534 | 39 | struct exynos_drm_gem_obj *exynos_gem_obj[MAX_FB_BUFFER]; |
1c248b7d ID |
40 | }; |
41 | ||
0519f9a1 ID |
42 | static int check_fb_gem_memory_type(struct drm_device *drm_dev, |
43 | struct exynos_drm_gem_obj *exynos_gem_obj) | |
44 | { | |
45 | unsigned int flags; | |
46 | ||
47 | /* | |
48 | * if exynos drm driver supports iommu then framebuffer can use | |
49 | * all the buffer types. | |
50 | */ | |
51 | if (is_drm_iommu_supported(drm_dev)) | |
52 | return 0; | |
53 | ||
54 | flags = exynos_gem_obj->flags; | |
55 | ||
56 | /* | |
57 | * without iommu support, not support physically non-continuous memory | |
58 | * for framebuffer. | |
59 | */ | |
60 | if (IS_NONCONTIG_BUFFER(flags)) { | |
61 | DRM_ERROR("cannot use this gem memory type for fb.\n"); | |
62 | return -EINVAL; | |
63 | } | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
1c248b7d ID |
68 | static void exynos_drm_fb_destroy(struct drm_framebuffer *fb) |
69 | { | |
70 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
07b6835f | 71 | unsigned int i; |
1c248b7d ID |
72 | |
73 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
74 | ||
1daa892c ID |
75 | /* make sure that overlay data are updated before relesing fb. */ |
76 | exynos_drm_encoder_complete_scanout(fb); | |
77 | ||
1c248b7d ID |
78 | drm_framebuffer_cleanup(fb); |
79 | ||
07b6835f LP |
80 | for (i = 0; i < ARRAY_SIZE(exynos_fb->exynos_gem_obj); i++) { |
81 | struct drm_gem_object *obj; | |
82 | ||
83 | if (exynos_fb->exynos_gem_obj[i] == NULL) | |
84 | continue; | |
85 | ||
86 | obj = &exynos_fb->exynos_gem_obj[i]->base; | |
87 | drm_gem_object_unreference_unlocked(obj); | |
88 | } | |
89 | ||
1c248b7d ID |
90 | kfree(exynos_fb); |
91 | exynos_fb = NULL; | |
92 | } | |
93 | ||
94 | static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb, | |
95 | struct drm_file *file_priv, | |
96 | unsigned int *handle) | |
97 | { | |
98 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
99 | ||
100 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
101 | ||
b9ede277 ID |
102 | /* This fb should have only one gem object. */ |
103 | if (WARN_ON(exynos_fb->buf_cnt != 1)) | |
104 | return -EINVAL; | |
105 | ||
1c248b7d | 106 | return drm_gem_handle_create(file_priv, |
229d3534 | 107 | &exynos_fb->exynos_gem_obj[0]->base, handle); |
1c248b7d ID |
108 | } |
109 | ||
110 | static int exynos_drm_fb_dirty(struct drm_framebuffer *fb, | |
111 | struct drm_file *file_priv, unsigned flags, | |
112 | unsigned color, struct drm_clip_rect *clips, | |
113 | unsigned num_clips) | |
114 | { | |
115 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
116 | ||
117 | /* TODO */ | |
118 | ||
119 | return 0; | |
120 | } | |
121 | ||
122 | static struct drm_framebuffer_funcs exynos_drm_fb_funcs = { | |
123 | .destroy = exynos_drm_fb_destroy, | |
124 | .create_handle = exynos_drm_fb_create_handle, | |
125 | .dirty = exynos_drm_fb_dirty, | |
126 | }; | |
127 | ||
01ed8126 ID |
128 | void exynos_drm_fb_set_buf_cnt(struct drm_framebuffer *fb, |
129 | unsigned int cnt) | |
130 | { | |
131 | struct exynos_drm_fb *exynos_fb; | |
132 | ||
133 | exynos_fb = to_exynos_fb(fb); | |
134 | ||
135 | exynos_fb->buf_cnt = cnt; | |
136 | } | |
137 | ||
138 | unsigned int exynos_drm_fb_get_buf_cnt(struct drm_framebuffer *fb) | |
139 | { | |
140 | struct exynos_drm_fb *exynos_fb; | |
141 | ||
142 | exynos_fb = to_exynos_fb(fb); | |
143 | ||
144 | return exynos_fb->buf_cnt; | |
145 | } | |
146 | ||
e1533c08 JS |
147 | struct drm_framebuffer * |
148 | exynos_drm_framebuffer_init(struct drm_device *dev, | |
149 | struct drm_mode_fb_cmd2 *mode_cmd, | |
150 | struct drm_gem_object *obj) | |
1c248b7d ID |
151 | { |
152 | struct exynos_drm_fb *exynos_fb; | |
0519f9a1 | 153 | struct exynos_drm_gem_obj *exynos_gem_obj; |
1c248b7d ID |
154 | int ret; |
155 | ||
0519f9a1 ID |
156 | exynos_gem_obj = to_exynos_gem_obj(obj); |
157 | ||
158 | ret = check_fb_gem_memory_type(dev, exynos_gem_obj); | |
159 | if (ret < 0) { | |
160 | DRM_ERROR("cannot use this gem memory type for fb.\n"); | |
161 | return ERR_PTR(-EINVAL); | |
162 | } | |
163 | ||
1c248b7d ID |
164 | exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); |
165 | if (!exynos_fb) { | |
e1533c08 | 166 | DRM_ERROR("failed to allocate exynos drm framebuffer\n"); |
1c248b7d ID |
167 | return ERR_PTR(-ENOMEM); |
168 | } | |
169 | ||
f2c0095a | 170 | drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); |
0519f9a1 ID |
171 | exynos_fb->exynos_gem_obj[0] = exynos_gem_obj; |
172 | ||
e1533c08 | 173 | ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); |
1c248b7d | 174 | if (ret) { |
e1533c08 JS |
175 | DRM_ERROR("failed to initialize framebuffer\n"); |
176 | return ERR_PTR(ret); | |
1c248b7d ID |
177 | } |
178 | ||
e1533c08 | 179 | return &exynos_fb->fb; |
1c248b7d ID |
180 | } |
181 | ||
01ed8126 ID |
182 | static u32 exynos_drm_format_num_buffers(struct drm_mode_fb_cmd2 *mode_cmd) |
183 | { | |
184 | unsigned int cnt = 0; | |
185 | ||
186 | if (mode_cmd->pixel_format != DRM_FORMAT_NV12) | |
187 | return drm_format_num_planes(mode_cmd->pixel_format); | |
188 | ||
189 | while (cnt != MAX_FB_BUFFER) { | |
190 | if (!mode_cmd->handles[cnt]) | |
191 | break; | |
192 | cnt++; | |
193 | } | |
194 | ||
195 | /* | |
196 | * check if NV12 or NV12M. | |
197 | * | |
198 | * NV12 | |
199 | * handles[0] = base1, offsets[0] = 0 | |
200 | * handles[1] = base1, offsets[1] = Y_size | |
201 | * | |
202 | * NV12M | |
203 | * handles[0] = base1, offsets[0] = 0 | |
204 | * handles[1] = base2, offsets[1] = 0 | |
205 | */ | |
206 | if (cnt == 2) { | |
207 | /* | |
208 | * in case of NV12 format, offsets[1] is not 0 and | |
209 | * handles[0] is same as handles[1]. | |
210 | */ | |
211 | if (mode_cmd->offsets[1] && | |
212 | mode_cmd->handles[0] == mode_cmd->handles[1]) | |
213 | cnt = 1; | |
214 | } | |
215 | ||
216 | return cnt; | |
217 | } | |
218 | ||
e1533c08 JS |
219 | static struct drm_framebuffer * |
220 | exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
221 | struct drm_mode_fb_cmd2 *mode_cmd) | |
1c248b7d | 222 | { |
e1533c08 | 223 | struct drm_gem_object *obj; |
979c0c7e | 224 | struct exynos_drm_gem_obj *exynos_gem_obj; |
229d3534 | 225 | struct exynos_drm_fb *exynos_fb; |
f2c0095a | 226 | int i, ret; |
e1533c08 | 227 | |
1c248b7d ID |
228 | DRM_DEBUG_KMS("%s\n", __FILE__); |
229 | ||
f2c0095a DV |
230 | exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); |
231 | if (!exynos_fb) { | |
232 | DRM_ERROR("failed to allocate exynos drm framebuffer\n"); | |
233 | return ERR_PTR(-ENOMEM); | |
07b6835f | 234 | } |
229d3534 | 235 | |
979c0c7e YC |
236 | obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]); |
237 | if (!obj) { | |
238 | DRM_ERROR("failed to lookup gem object\n"); | |
239 | ret = -ENOENT; | |
240 | goto err_free; | |
241 | } | |
242 | ||
f2c0095a DV |
243 | drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); |
244 | exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj); | |
01ed8126 ID |
245 | exynos_fb->buf_cnt = exynos_drm_format_num_buffers(mode_cmd); |
246 | ||
247 | DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt); | |
229d3534 | 248 | |
01ed8126 | 249 | for (i = 1; i < exynos_fb->buf_cnt; i++) { |
229d3534 SWK |
250 | obj = drm_gem_object_lookup(dev, file_priv, |
251 | mode_cmd->handles[i]); | |
252 | if (!obj) { | |
253 | DRM_ERROR("failed to lookup gem object\n"); | |
979c0c7e YC |
254 | ret = -ENOENT; |
255 | exynos_fb->buf_cnt = i; | |
256 | goto err_unreference; | |
229d3534 SWK |
257 | } |
258 | ||
0519f9a1 | 259 | exynos_gem_obj = to_exynos_gem_obj(obj); |
979c0c7e | 260 | exynos_fb->exynos_gem_obj[i] = exynos_gem_obj; |
0519f9a1 ID |
261 | |
262 | ret = check_fb_gem_memory_type(dev, exynos_gem_obj); | |
263 | if (ret < 0) { | |
264 | DRM_ERROR("cannot use this gem memory type for fb.\n"); | |
979c0c7e | 265 | goto err_unreference; |
0519f9a1 | 266 | } |
229d3534 SWK |
267 | } |
268 | ||
f2c0095a DV |
269 | ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); |
270 | if (ret) { | |
979c0c7e YC |
271 | DRM_ERROR("failed to init framebuffer.\n"); |
272 | goto err_unreference; | |
f2c0095a DV |
273 | } |
274 | ||
275 | return &exynos_fb->fb; | |
979c0c7e YC |
276 | |
277 | err_unreference: | |
278 | for (i = 0; i < exynos_fb->buf_cnt; i++) { | |
279 | struct drm_gem_object *obj; | |
280 | ||
281 | obj = &exynos_fb->exynos_gem_obj[i]->base; | |
282 | if (obj) | |
283 | drm_gem_object_unreference_unlocked(obj); | |
284 | } | |
285 | err_free: | |
286 | kfree(exynos_fb); | |
287 | return ERR_PTR(ret); | |
1c248b7d ID |
288 | } |
289 | ||
229d3534 SWK |
290 | struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb, |
291 | int index) | |
1c248b7d ID |
292 | { |
293 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
2c871127 | 294 | struct exynos_drm_gem_buf *buffer; |
1c248b7d ID |
295 | |
296 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
297 | ||
229d3534 SWK |
298 | if (index >= MAX_FB_BUFFER) |
299 | return NULL; | |
300 | ||
301 | buffer = exynos_fb->exynos_gem_obj[index]->buffer; | |
2c871127 | 302 | if (!buffer) |
19c8b834 | 303 | return NULL; |
1c248b7d | 304 | |
4744ad24 | 305 | DRM_DEBUG_KMS("dma_addr = 0x%lx\n", (unsigned long)buffer->dma_addr); |
1c248b7d | 306 | |
2c871127 | 307 | return buffer; |
1c248b7d ID |
308 | } |
309 | ||
7db3eba6 SWK |
310 | static void exynos_drm_output_poll_changed(struct drm_device *dev) |
311 | { | |
312 | struct exynos_drm_private *private = dev->dev_private; | |
313 | struct drm_fb_helper *fb_helper = private->fb_helper; | |
314 | ||
315 | if (fb_helper) | |
316 | drm_fb_helper_hotplug_event(fb_helper); | |
317 | } | |
318 | ||
e6ecefaa | 319 | static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = { |
e1533c08 | 320 | .fb_create = exynos_user_fb_create, |
7db3eba6 | 321 | .output_poll_changed = exynos_drm_output_poll_changed, |
1c248b7d ID |
322 | }; |
323 | ||
324 | void exynos_drm_mode_config_init(struct drm_device *dev) | |
325 | { | |
326 | dev->mode_config.min_width = 0; | |
327 | dev->mode_config.min_height = 0; | |
328 | ||
329 | /* | |
330 | * set max width and height as default value(4096x4096). | |
331 | * this value would be used to check framebuffer size limitation | |
332 | * at drm_mode_addfb(). | |
333 | */ | |
334 | dev->mode_config.max_width = 4096; | |
335 | dev->mode_config.max_height = 4096; | |
336 | ||
337 | dev->mode_config.funcs = &exynos_drm_mode_config_funcs; | |
338 | } |