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" |
25928a39 | 23 | #include "exynos_drm_fbdev.h" |
1c248b7d | 24 | #include "exynos_drm_gem.h" |
0519f9a1 | 25 | #include "exynos_drm_iommu.h" |
080be03d | 26 | #include "exynos_drm_crtc.h" |
1c248b7d ID |
27 | |
28 | #define to_exynos_fb(x) container_of(x, struct exynos_drm_fb, fb) | |
29 | ||
30 | /* | |
31 | * exynos specific framebuffer structure. | |
32 | * | |
33 | * @fb: drm framebuffer obejct. | |
01ed8126 | 34 | * @buf_cnt: a buffer count to drm framebuffer. |
229d3534 | 35 | * @exynos_gem_obj: array of exynos specific gem object containing a gem object. |
1c248b7d ID |
36 | */ |
37 | struct exynos_drm_fb { | |
38 | struct drm_framebuffer fb; | |
01ed8126 | 39 | unsigned int buf_cnt; |
229d3534 | 40 | struct exynos_drm_gem_obj *exynos_gem_obj[MAX_FB_BUFFER]; |
1c248b7d ID |
41 | }; |
42 | ||
0519f9a1 ID |
43 | static int check_fb_gem_memory_type(struct drm_device *drm_dev, |
44 | struct exynos_drm_gem_obj *exynos_gem_obj) | |
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 | ||
55 | flags = exynos_gem_obj->flags; | |
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 | |
1daa892c | 74 | /* make sure that overlay data are updated before relesing fb. */ |
080be03d | 75 | exynos_drm_crtc_complete_scanout(fb); |
1daa892c | 76 | |
1c248b7d ID |
77 | drm_framebuffer_cleanup(fb); |
78 | ||
07b6835f LP |
79 | for (i = 0; i < ARRAY_SIZE(exynos_fb->exynos_gem_obj); i++) { |
80 | struct drm_gem_object *obj; | |
81 | ||
82 | if (exynos_fb->exynos_gem_obj[i] == NULL) | |
83 | continue; | |
84 | ||
85 | obj = &exynos_fb->exynos_gem_obj[i]->base; | |
86 | drm_gem_object_unreference_unlocked(obj); | |
87 | } | |
88 | ||
1c248b7d ID |
89 | kfree(exynos_fb); |
90 | exynos_fb = NULL; | |
91 | } | |
92 | ||
93 | static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb, | |
94 | struct drm_file *file_priv, | |
95 | unsigned int *handle) | |
96 | { | |
97 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
98 | ||
b9ede277 ID |
99 | /* This fb should have only one gem object. */ |
100 | if (WARN_ON(exynos_fb->buf_cnt != 1)) | |
101 | return -EINVAL; | |
102 | ||
1c248b7d | 103 | return drm_gem_handle_create(file_priv, |
229d3534 | 104 | &exynos_fb->exynos_gem_obj[0]->base, handle); |
1c248b7d ID |
105 | } |
106 | ||
107 | static int exynos_drm_fb_dirty(struct drm_framebuffer *fb, | |
108 | struct drm_file *file_priv, unsigned flags, | |
109 | unsigned color, struct drm_clip_rect *clips, | |
110 | unsigned num_clips) | |
111 | { | |
1c248b7d ID |
112 | /* TODO */ |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
117 | static struct drm_framebuffer_funcs exynos_drm_fb_funcs = { | |
118 | .destroy = exynos_drm_fb_destroy, | |
119 | .create_handle = exynos_drm_fb_create_handle, | |
120 | .dirty = exynos_drm_fb_dirty, | |
121 | }; | |
122 | ||
01ed8126 ID |
123 | void exynos_drm_fb_set_buf_cnt(struct drm_framebuffer *fb, |
124 | unsigned int cnt) | |
125 | { | |
126 | struct exynos_drm_fb *exynos_fb; | |
127 | ||
128 | exynos_fb = to_exynos_fb(fb); | |
129 | ||
130 | exynos_fb->buf_cnt = cnt; | |
131 | } | |
132 | ||
133 | unsigned int exynos_drm_fb_get_buf_cnt(struct drm_framebuffer *fb) | |
134 | { | |
135 | struct exynos_drm_fb *exynos_fb; | |
136 | ||
137 | exynos_fb = to_exynos_fb(fb); | |
138 | ||
139 | return exynos_fb->buf_cnt; | |
140 | } | |
141 | ||
e1533c08 JS |
142 | struct drm_framebuffer * |
143 | exynos_drm_framebuffer_init(struct drm_device *dev, | |
144 | struct drm_mode_fb_cmd2 *mode_cmd, | |
145 | struct drm_gem_object *obj) | |
1c248b7d ID |
146 | { |
147 | struct exynos_drm_fb *exynos_fb; | |
0519f9a1 | 148 | struct exynos_drm_gem_obj *exynos_gem_obj; |
1c248b7d ID |
149 | int ret; |
150 | ||
0519f9a1 ID |
151 | exynos_gem_obj = to_exynos_gem_obj(obj); |
152 | ||
153 | ret = check_fb_gem_memory_type(dev, exynos_gem_obj); | |
7ded8588 TJ |
154 | if (ret < 0) |
155 | return ERR_PTR(ret); | |
0519f9a1 | 156 | |
1c248b7d | 157 | exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); |
38bb5253 | 158 | if (!exynos_fb) |
1c248b7d | 159 | return ERR_PTR(-ENOMEM); |
1c248b7d | 160 | |
f2c0095a | 161 | drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); |
0519f9a1 ID |
162 | exynos_fb->exynos_gem_obj[0] = exynos_gem_obj; |
163 | ||
e1533c08 | 164 | ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); |
1c248b7d | 165 | if (ret) { |
849b4318 | 166 | kfree(exynos_fb); |
e1533c08 JS |
167 | DRM_ERROR("failed to initialize framebuffer\n"); |
168 | return ERR_PTR(ret); | |
1c248b7d ID |
169 | } |
170 | ||
e1533c08 | 171 | return &exynos_fb->fb; |
1c248b7d ID |
172 | } |
173 | ||
e1533c08 JS |
174 | static struct drm_framebuffer * |
175 | exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
176 | struct drm_mode_fb_cmd2 *mode_cmd) | |
1c248b7d | 177 | { |
e1533c08 | 178 | struct drm_gem_object *obj; |
979c0c7e | 179 | struct exynos_drm_gem_obj *exynos_gem_obj; |
229d3534 | 180 | struct exynos_drm_fb *exynos_fb; |
f2c0095a | 181 | int i, ret; |
e1533c08 | 182 | |
f2c0095a | 183 | exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL); |
38bb5253 | 184 | if (!exynos_fb) |
f2c0095a | 185 | return ERR_PTR(-ENOMEM); |
229d3534 | 186 | |
979c0c7e YC |
187 | obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]); |
188 | if (!obj) { | |
189 | DRM_ERROR("failed to lookup gem object\n"); | |
190 | ret = -ENOENT; | |
191 | goto err_free; | |
192 | } | |
193 | ||
f2c0095a DV |
194 | drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd); |
195 | exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj); | |
d10ebb9f | 196 | exynos_fb->buf_cnt = drm_format_num_planes(mode_cmd->pixel_format); |
01ed8126 ID |
197 | |
198 | DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt); | |
229d3534 | 199 | |
01ed8126 | 200 | for (i = 1; i < exynos_fb->buf_cnt; i++) { |
229d3534 SWK |
201 | obj = drm_gem_object_lookup(dev, file_priv, |
202 | mode_cmd->handles[i]); | |
203 | if (!obj) { | |
204 | DRM_ERROR("failed to lookup gem object\n"); | |
979c0c7e YC |
205 | ret = -ENOENT; |
206 | exynos_fb->buf_cnt = i; | |
207 | goto err_unreference; | |
229d3534 SWK |
208 | } |
209 | ||
0519f9a1 | 210 | exynos_gem_obj = to_exynos_gem_obj(obj); |
979c0c7e | 211 | exynos_fb->exynos_gem_obj[i] = exynos_gem_obj; |
0519f9a1 ID |
212 | |
213 | ret = check_fb_gem_memory_type(dev, exynos_gem_obj); | |
7ded8588 | 214 | if (ret < 0) |
979c0c7e | 215 | goto err_unreference; |
229d3534 SWK |
216 | } |
217 | ||
f2c0095a DV |
218 | ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs); |
219 | if (ret) { | |
979c0c7e YC |
220 | DRM_ERROR("failed to init framebuffer.\n"); |
221 | goto err_unreference; | |
f2c0095a DV |
222 | } |
223 | ||
224 | return &exynos_fb->fb; | |
979c0c7e YC |
225 | |
226 | err_unreference: | |
227 | for (i = 0; i < exynos_fb->buf_cnt; i++) { | |
228 | struct drm_gem_object *obj; | |
229 | ||
230 | obj = &exynos_fb->exynos_gem_obj[i]->base; | |
231 | if (obj) | |
232 | drm_gem_object_unreference_unlocked(obj); | |
233 | } | |
234 | err_free: | |
235 | kfree(exynos_fb); | |
236 | return ERR_PTR(ret); | |
1c248b7d ID |
237 | } |
238 | ||
229d3534 SWK |
239 | struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb, |
240 | int index) | |
1c248b7d ID |
241 | { |
242 | struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb); | |
2c871127 | 243 | struct exynos_drm_gem_buf *buffer; |
1c248b7d | 244 | |
229d3534 SWK |
245 | if (index >= MAX_FB_BUFFER) |
246 | return NULL; | |
247 | ||
248 | buffer = exynos_fb->exynos_gem_obj[index]->buffer; | |
2c871127 | 249 | if (!buffer) |
19c8b834 | 250 | return NULL; |
1c248b7d | 251 | |
4744ad24 | 252 | DRM_DEBUG_KMS("dma_addr = 0x%lx\n", (unsigned long)buffer->dma_addr); |
1c248b7d | 253 | |
2c871127 | 254 | return buffer; |
1c248b7d ID |
255 | } |
256 | ||
7db3eba6 SWK |
257 | static void exynos_drm_output_poll_changed(struct drm_device *dev) |
258 | { | |
259 | struct exynos_drm_private *private = dev->dev_private; | |
260 | struct drm_fb_helper *fb_helper = private->fb_helper; | |
261 | ||
262 | if (fb_helper) | |
263 | drm_fb_helper_hotplug_event(fb_helper); | |
25928a39 AH |
264 | else |
265 | exynos_drm_fbdev_init(dev); | |
7db3eba6 SWK |
266 | } |
267 | ||
e6ecefaa | 268 | static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = { |
e1533c08 | 269 | .fb_create = exynos_user_fb_create, |
7db3eba6 | 270 | .output_poll_changed = exynos_drm_output_poll_changed, |
1c248b7d ID |
271 | }; |
272 | ||
273 | void exynos_drm_mode_config_init(struct drm_device *dev) | |
274 | { | |
275 | dev->mode_config.min_width = 0; | |
276 | dev->mode_config.min_height = 0; | |
277 | ||
278 | /* | |
279 | * set max width and height as default value(4096x4096). | |
280 | * this value would be used to check framebuffer size limitation | |
281 | * at drm_mode_addfb(). | |
282 | */ | |
283 | dev->mode_config.max_width = 4096; | |
284 | dev->mode_config.max_height = 4096; | |
285 | ||
286 | dev->mode_config.funcs = &exynos_drm_mode_config_funcs; | |
287 | } |