Commit | Line | Data |
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2048e328 MY |
1 | /* |
2 | * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd | |
3 | * Author:Mark Yao <mark.yao@rock-chips.com> | |
4 | * | |
5 | * This software is licensed under the terms of the GNU General Public | |
6 | * License version 2, as published by the Free Software Foundation, and | |
7 | * may be copied, distributed, and modified under those terms. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | */ | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <drm/drm.h> | |
17 | #include <drm/drmP.h> | |
63ebb9fa | 18 | #include <drm/drm_atomic.h> |
2048e328 MY |
19 | #include <drm/drm_fb_helper.h> |
20 | #include <drm/drm_crtc_helper.h> | |
21 | ||
22 | #include "rockchip_drm_drv.h" | |
a7e03fb5 | 23 | #include "rockchip_drm_fb.h" |
2048e328 | 24 | #include "rockchip_drm_gem.h" |
5182c1a5 | 25 | #include "rockchip_drm_psr.h" |
2048e328 MY |
26 | |
27 | #define to_rockchip_fb(x) container_of(x, struct rockchip_drm_fb, fb) | |
28 | ||
29 | struct rockchip_drm_fb { | |
30 | struct drm_framebuffer fb; | |
31 | struct drm_gem_object *obj[ROCKCHIP_MAX_FB_BUFFER]; | |
32 | }; | |
33 | ||
34 | struct drm_gem_object *rockchip_fb_get_gem_obj(struct drm_framebuffer *fb, | |
35 | unsigned int plane) | |
36 | { | |
37 | struct rockchip_drm_fb *rk_fb = to_rockchip_fb(fb); | |
38 | ||
39 | if (plane >= ROCKCHIP_MAX_FB_BUFFER) | |
40 | return NULL; | |
41 | ||
42 | return rk_fb->obj[plane]; | |
43 | } | |
2048e328 MY |
44 | |
45 | static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb) | |
46 | { | |
47 | struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb); | |
2048e328 MY |
48 | int i; |
49 | ||
f5e193a1 ME |
50 | for (i = 0; i < ROCKCHIP_MAX_FB_BUFFER; i++) |
51 | drm_gem_object_unreference_unlocked(rockchip_fb->obj[i]); | |
2048e328 MY |
52 | |
53 | drm_framebuffer_cleanup(fb); | |
54 | kfree(rockchip_fb); | |
55 | } | |
56 | ||
57 | static int rockchip_drm_fb_create_handle(struct drm_framebuffer *fb, | |
58 | struct drm_file *file_priv, | |
59 | unsigned int *handle) | |
60 | { | |
61 | struct rockchip_drm_fb *rockchip_fb = to_rockchip_fb(fb); | |
62 | ||
63 | return drm_gem_handle_create(file_priv, | |
64 | rockchip_fb->obj[0], handle); | |
65 | } | |
66 | ||
5182c1a5 YY |
67 | static int rockchip_drm_fb_dirty(struct drm_framebuffer *fb, |
68 | struct drm_file *file, | |
69 | unsigned int flags, unsigned int color, | |
70 | struct drm_clip_rect *clips, | |
71 | unsigned int num_clips) | |
72 | { | |
73 | rockchip_drm_psr_flush(fb->dev); | |
74 | return 0; | |
75 | } | |
76 | ||
28c508ec | 77 | static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = { |
2048e328 MY |
78 | .destroy = rockchip_drm_fb_destroy, |
79 | .create_handle = rockchip_drm_fb_create_handle, | |
5182c1a5 | 80 | .dirty = rockchip_drm_fb_dirty, |
2048e328 MY |
81 | }; |
82 | ||
83 | static struct rockchip_drm_fb * | |
1eb83451 | 84 | rockchip_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd, |
2048e328 MY |
85 | struct drm_gem_object **obj, unsigned int num_planes) |
86 | { | |
87 | struct rockchip_drm_fb *rockchip_fb; | |
88 | int ret; | |
89 | int i; | |
90 | ||
91 | rockchip_fb = kzalloc(sizeof(*rockchip_fb), GFP_KERNEL); | |
92 | if (!rockchip_fb) | |
93 | return ERR_PTR(-ENOMEM); | |
94 | ||
95 | drm_helper_mode_fill_fb_struct(&rockchip_fb->fb, mode_cmd); | |
96 | ||
97 | for (i = 0; i < num_planes; i++) | |
98 | rockchip_fb->obj[i] = obj[i]; | |
99 | ||
100 | ret = drm_framebuffer_init(dev, &rockchip_fb->fb, | |
101 | &rockchip_drm_fb_funcs); | |
102 | if (ret) { | |
103 | dev_err(dev->dev, "Failed to initialize framebuffer: %d\n", | |
104 | ret); | |
105 | kfree(rockchip_fb); | |
106 | return ERR_PTR(ret); | |
107 | } | |
108 | ||
109 | return rockchip_fb; | |
110 | } | |
111 | ||
112 | static struct drm_framebuffer * | |
113 | rockchip_user_fb_create(struct drm_device *dev, struct drm_file *file_priv, | |
1eb83451 | 114 | const struct drm_mode_fb_cmd2 *mode_cmd) |
2048e328 MY |
115 | { |
116 | struct rockchip_drm_fb *rockchip_fb; | |
117 | struct drm_gem_object *objs[ROCKCHIP_MAX_FB_BUFFER]; | |
118 | struct drm_gem_object *obj; | |
119 | unsigned int hsub; | |
120 | unsigned int vsub; | |
121 | int num_planes; | |
122 | int ret; | |
123 | int i; | |
124 | ||
125 | hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format); | |
126 | vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format); | |
127 | num_planes = min(drm_format_num_planes(mode_cmd->pixel_format), | |
128 | ROCKCHIP_MAX_FB_BUFFER); | |
129 | ||
130 | for (i = 0; i < num_planes; i++) { | |
131 | unsigned int width = mode_cmd->width / (i ? hsub : 1); | |
132 | unsigned int height = mode_cmd->height / (i ? vsub : 1); | |
133 | unsigned int min_size; | |
134 | ||
a8ad0bd8 | 135 | obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]); |
2048e328 MY |
136 | if (!obj) { |
137 | dev_err(dev->dev, "Failed to lookup GEM object\n"); | |
138 | ret = -ENXIO; | |
139 | goto err_gem_object_unreference; | |
140 | } | |
141 | ||
142 | min_size = (height - 1) * mode_cmd->pitches[i] + | |
143 | mode_cmd->offsets[i] + | |
144 | width * drm_format_plane_cpp(mode_cmd->pixel_format, i); | |
145 | ||
146 | if (obj->size < min_size) { | |
147 | drm_gem_object_unreference_unlocked(obj); | |
148 | ret = -EINVAL; | |
149 | goto err_gem_object_unreference; | |
150 | } | |
151 | objs[i] = obj; | |
152 | } | |
153 | ||
154 | rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, objs, i); | |
155 | if (IS_ERR(rockchip_fb)) { | |
156 | ret = PTR_ERR(rockchip_fb); | |
157 | goto err_gem_object_unreference; | |
158 | } | |
159 | ||
160 | return &rockchip_fb->fb; | |
161 | ||
162 | err_gem_object_unreference: | |
163 | for (i--; i >= 0; i--) | |
164 | drm_gem_object_unreference_unlocked(objs[i]); | |
165 | return ERR_PTR(ret); | |
166 | } | |
167 | ||
168 | static void rockchip_drm_output_poll_changed(struct drm_device *dev) | |
169 | { | |
170 | struct rockchip_drm_private *private = dev->dev_private; | |
171 | struct drm_fb_helper *fb_helper = &private->fbdev_helper; | |
172 | ||
765c35bb HS |
173 | if (fb_helper) |
174 | drm_fb_helper_hotplug_event(fb_helper); | |
2048e328 MY |
175 | } |
176 | ||
63ebb9fa MY |
177 | static void rockchip_crtc_wait_for_update(struct drm_crtc *crtc) |
178 | { | |
179 | struct rockchip_drm_private *priv = crtc->dev->dev_private; | |
180 | int pipe = drm_crtc_index(crtc); | |
181 | const struct rockchip_crtc_funcs *crtc_funcs = priv->crtc_funcs[pipe]; | |
182 | ||
183 | if (crtc_funcs && crtc_funcs->wait_for_update) | |
184 | crtc_funcs->wait_for_update(crtc); | |
185 | } | |
186 | ||
c9ad1d99 JK |
187 | /* |
188 | * We can't use drm_atomic_helper_wait_for_vblanks() because rk3288 and rk3066 | |
189 | * have hardware counters for neither vblanks nor scanlines, which results in | |
190 | * a race where: | |
191 | * | <-- HW vsync irq and reg take effect | |
192 | * plane_commit --> | | |
193 | * get_vblank and wait --> | | |
194 | * | <-- handle_vblank, vblank->count + 1 | |
195 | * cleanup_fb --> | | |
196 | * iommu crash --> | | |
197 | * | <-- HW vsync irq and reg take effect | |
198 | * | |
199 | * This function is equivalent but uses rockchip_crtc_wait_for_update() instead | |
200 | * of waiting for vblank_count to change. | |
201 | */ | |
63ebb9fa | 202 | static void |
f2227f46 | 203 | rockchip_atomic_wait_for_complete(struct drm_device *dev, struct drm_atomic_state *old_state) |
63ebb9fa MY |
204 | { |
205 | struct drm_crtc_state *old_crtc_state; | |
206 | struct drm_crtc *crtc; | |
207 | int i, ret; | |
208 | ||
209 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { | |
210 | /* No one cares about the old state, so abuse it for tracking | |
211 | * and store whether we hold a vblank reference (and should do a | |
212 | * vblank wait) in the ->enable boolean. | |
213 | */ | |
214 | old_crtc_state->enable = false; | |
215 | ||
216 | if (!crtc->state->active) | |
217 | continue; | |
218 | ||
f2227f46 JK |
219 | if (!drm_atomic_helper_framebuffer_changed(dev, |
220 | old_state, crtc)) | |
221 | continue; | |
222 | ||
63ebb9fa MY |
223 | ret = drm_crtc_vblank_get(crtc); |
224 | if (ret != 0) | |
225 | continue; | |
226 | ||
227 | old_crtc_state->enable = true; | |
228 | } | |
229 | ||
230 | for_each_crtc_in_state(old_state, crtc, old_crtc_state, i) { | |
231 | if (!old_crtc_state->enable) | |
232 | continue; | |
233 | ||
234 | rockchip_crtc_wait_for_update(crtc); | |
235 | drm_crtc_vblank_put(crtc); | |
236 | } | |
237 | } | |
238 | ||
f32fad51 | 239 | static void |
893b6cad | 240 | rockchip_atomic_commit_tail(struct drm_atomic_state *state) |
63ebb9fa | 241 | { |
893b6cad | 242 | struct drm_device *dev = state->dev; |
63ebb9fa | 243 | |
63ebb9fa MY |
244 | drm_atomic_helper_commit_modeset_disables(dev, state); |
245 | ||
246 | drm_atomic_helper_commit_modeset_enables(dev, state); | |
247 | ||
2b58e98d LY |
248 | drm_atomic_helper_commit_planes(dev, state, |
249 | DRM_PLANE_COMMIT_ACTIVE_ONLY); | |
63ebb9fa | 250 | |
893b6cad DV |
251 | drm_atomic_helper_commit_hw_done(state); |
252 | ||
f2227f46 | 253 | rockchip_atomic_wait_for_complete(dev, state); |
63ebb9fa MY |
254 | |
255 | drm_atomic_helper_cleanup_planes(dev, state); | |
f32fad51 MY |
256 | } |
257 | ||
8ff490ae | 258 | static struct drm_mode_config_helper_funcs rockchip_mode_config_helpers = { |
893b6cad DV |
259 | .atomic_commit_tail = rockchip_atomic_commit_tail, |
260 | }; | |
63ebb9fa | 261 | |
2048e328 MY |
262 | static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = { |
263 | .fb_create = rockchip_user_fb_create, | |
264 | .output_poll_changed = rockchip_drm_output_poll_changed, | |
63ebb9fa | 265 | .atomic_check = drm_atomic_helper_check, |
893b6cad | 266 | .atomic_commit = drm_atomic_helper_commit, |
2048e328 MY |
267 | }; |
268 | ||
269 | struct drm_framebuffer * | |
270 | rockchip_drm_framebuffer_init(struct drm_device *dev, | |
1eb83451 | 271 | const struct drm_mode_fb_cmd2 *mode_cmd, |
2048e328 MY |
272 | struct drm_gem_object *obj) |
273 | { | |
274 | struct rockchip_drm_fb *rockchip_fb; | |
275 | ||
276 | rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1); | |
277 | if (IS_ERR(rockchip_fb)) | |
278 | return NULL; | |
279 | ||
280 | return &rockchip_fb->fb; | |
281 | } | |
282 | ||
283 | void rockchip_drm_mode_config_init(struct drm_device *dev) | |
284 | { | |
285 | dev->mode_config.min_width = 0; | |
286 | dev->mode_config.min_height = 0; | |
287 | ||
288 | /* | |
289 | * set max width and height as default value(4096x4096). | |
290 | * this value would be used to check framebuffer size limitation | |
291 | * at drm_mode_addfb(). | |
292 | */ | |
293 | dev->mode_config.max_width = 4096; | |
294 | dev->mode_config.max_height = 4096; | |
295 | ||
296 | dev->mode_config.funcs = &rockchip_drm_mode_config_funcs; | |
893b6cad | 297 | dev->mode_config.helper_private = &rockchip_mode_config_helpers; |
2048e328 | 298 | } |