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1c248b7d ID |
1 | /* exynos_drm_encoder.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 | * | |
9 | * Permission is hereby granted, free of charge, to any person obtaining a | |
10 | * copy of this software and associated documentation files (the "Software"), | |
11 | * to deal in the Software without restriction, including without limitation | |
12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
13 | * and/or sell copies of the Software, and to permit persons to whom the | |
14 | * Software is furnished to do so, subject to the following conditions: | |
15 | * | |
16 | * The above copyright notice and this permission notice (including the next | |
17 | * paragraph) shall be included in all copies or substantial portions of the | |
18 | * Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
23 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
24 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
25 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
26 | * OTHER DEALINGS IN THE SOFTWARE. | |
27 | */ | |
28 | ||
29 | #include "drmP.h" | |
30 | #include "drm_crtc_helper.h" | |
31 | ||
32 | #include "exynos_drm_drv.h" | |
33 | #include "exynos_drm_crtc.h" | |
34 | #include "exynos_drm_encoder.h" | |
35 | ||
36 | #define to_exynos_encoder(x) container_of(x, struct exynos_drm_encoder,\ | |
37 | drm_encoder) | |
38 | ||
39 | /* | |
40 | * exynos specific encoder structure. | |
41 | * | |
42 | * @drm_encoder: encoder object. | |
43 | * @manager: specific encoder has its own manager to control a hardware | |
44 | * appropriately and we can access a hardware drawing on this manager. | |
45 | */ | |
46 | struct exynos_drm_encoder { | |
47 | struct drm_encoder drm_encoder; | |
48 | struct exynos_drm_manager *manager; | |
49 | }; | |
50 | ||
51 | static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode) | |
52 | { | |
53 | struct drm_device *dev = encoder->dev; | |
54 | struct drm_connector *connector; | |
55 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
56 | ||
57 | DRM_DEBUG_KMS("%s, encoder dpms: %d\n", __FILE__, mode); | |
58 | ||
59 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
60 | if (connector->encoder == encoder) { | |
74ccc539 ID |
61 | struct exynos_drm_display_ops *display_ops = |
62 | manager->display_ops; | |
1c248b7d | 63 | |
d2716c89 JS |
64 | DRM_DEBUG_KMS("connector[%d] dpms[%d]\n", |
65 | connector->base.id, mode); | |
74ccc539 ID |
66 | if (display_ops && display_ops->power_on) |
67 | display_ops->power_on(manager->dev, mode); | |
1c248b7d ID |
68 | } |
69 | } | |
70 | } | |
71 | ||
72 | static bool | |
73 | exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder, | |
74 | struct drm_display_mode *mode, | |
75 | struct drm_display_mode *adjusted_mode) | |
76 | { | |
77 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
78 | ||
79 | /* drm framework doesn't check NULL. */ | |
80 | ||
81 | return true; | |
82 | } | |
83 | ||
84 | static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder, | |
85 | struct drm_display_mode *mode, | |
86 | struct drm_display_mode *adjusted_mode) | |
87 | { | |
88 | struct drm_device *dev = encoder->dev; | |
89 | struct drm_connector *connector; | |
90 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
91 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
92 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
93 | struct exynos_drm_overlay *overlay = get_exynos_drm_overlay(dev, | |
94 | encoder->crtc); | |
95 | ||
96 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
97 | ||
98 | mode = adjusted_mode; | |
99 | ||
100 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
101 | if (connector->encoder == encoder) { | |
102 | if (manager_ops && manager_ops->mode_set) | |
103 | manager_ops->mode_set(manager->dev, mode); | |
104 | ||
105 | if (overlay_ops && overlay_ops->mode_set) | |
106 | overlay_ops->mode_set(manager->dev, overlay); | |
107 | } | |
108 | } | |
109 | } | |
110 | ||
111 | static void exynos_drm_encoder_prepare(struct drm_encoder *encoder) | |
112 | { | |
113 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
114 | ||
115 | /* drm framework doesn't check NULL. */ | |
116 | } | |
117 | ||
118 | static void exynos_drm_encoder_commit(struct drm_encoder *encoder) | |
119 | { | |
120 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
121 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
1c248b7d ID |
122 | |
123 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
124 | ||
125 | if (manager_ops && manager_ops->commit) | |
126 | manager_ops->commit(manager->dev); | |
1c248b7d ID |
127 | } |
128 | ||
129 | static struct drm_crtc * | |
130 | exynos_drm_encoder_get_crtc(struct drm_encoder *encoder) | |
131 | { | |
132 | return encoder->crtc; | |
133 | } | |
134 | ||
135 | static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = { | |
136 | .dpms = exynos_drm_encoder_dpms, | |
137 | .mode_fixup = exynos_drm_encoder_mode_fixup, | |
138 | .mode_set = exynos_drm_encoder_mode_set, | |
139 | .prepare = exynos_drm_encoder_prepare, | |
140 | .commit = exynos_drm_encoder_commit, | |
141 | .get_crtc = exynos_drm_encoder_get_crtc, | |
142 | }; | |
143 | ||
144 | static void exynos_drm_encoder_destroy(struct drm_encoder *encoder) | |
145 | { | |
146 | struct exynos_drm_encoder *exynos_encoder = | |
147 | to_exynos_encoder(encoder); | |
148 | ||
149 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
150 | ||
151 | exynos_encoder->manager->pipe = -1; | |
152 | ||
153 | drm_encoder_cleanup(encoder); | |
154 | encoder->dev->mode_config.num_encoder--; | |
155 | kfree(exynos_encoder); | |
156 | } | |
157 | ||
158 | static struct drm_encoder_funcs exynos_encoder_funcs = { | |
159 | .destroy = exynos_drm_encoder_destroy, | |
160 | }; | |
161 | ||
162 | struct drm_encoder * | |
163 | exynos_drm_encoder_create(struct drm_device *dev, | |
164 | struct exynos_drm_manager *manager, | |
165 | unsigned int possible_crtcs) | |
166 | { | |
167 | struct drm_encoder *encoder; | |
168 | struct exynos_drm_encoder *exynos_encoder; | |
169 | ||
170 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
171 | ||
172 | if (!manager || !possible_crtcs) | |
173 | return NULL; | |
174 | ||
175 | if (!manager->dev) | |
176 | return NULL; | |
177 | ||
178 | exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL); | |
179 | if (!exynos_encoder) { | |
180 | DRM_ERROR("failed to allocate encoder\n"); | |
181 | return NULL; | |
182 | } | |
183 | ||
184 | exynos_encoder->manager = manager; | |
185 | encoder = &exynos_encoder->drm_encoder; | |
186 | encoder->possible_crtcs = possible_crtcs; | |
187 | ||
188 | DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); | |
189 | ||
190 | drm_encoder_init(dev, encoder, &exynos_encoder_funcs, | |
191 | DRM_MODE_ENCODER_TMDS); | |
192 | ||
193 | drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs); | |
194 | ||
195 | DRM_DEBUG_KMS("encoder has been created\n"); | |
196 | ||
197 | return encoder; | |
198 | } | |
199 | ||
200 | struct exynos_drm_manager *exynos_drm_get_manager(struct drm_encoder *encoder) | |
201 | { | |
202 | return to_exynos_encoder(encoder)->manager; | |
203 | } | |
204 | ||
205 | void exynos_drm_fn_encoder(struct drm_crtc *crtc, void *data, | |
206 | void (*fn)(struct drm_encoder *, void *)) | |
207 | { | |
208 | struct drm_device *dev = crtc->dev; | |
209 | struct drm_encoder *encoder; | |
d2716c89 JS |
210 | struct exynos_drm_private *private = dev->dev_private; |
211 | struct exynos_drm_manager *manager; | |
1c248b7d ID |
212 | |
213 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
d2716c89 JS |
214 | /* |
215 | * if crtc is detached from encoder, check pipe, | |
216 | * otherwise check crtc attached to encoder | |
217 | */ | |
218 | if (!encoder->crtc) { | |
219 | manager = to_exynos_encoder(encoder)->manager; | |
220 | if (manager->pipe < 0 || | |
221 | private->crtc[manager->pipe] != crtc) | |
222 | continue; | |
223 | } else { | |
224 | if (encoder->crtc != crtc) | |
225 | continue; | |
226 | } | |
1c248b7d ID |
227 | |
228 | fn(encoder, data); | |
229 | } | |
230 | } | |
231 | ||
232 | void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data) | |
233 | { | |
234 | struct exynos_drm_manager *manager = | |
235 | to_exynos_encoder(encoder)->manager; | |
236 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
237 | int crtc = *(int *)data; | |
238 | ||
239 | if (manager->pipe == -1) | |
240 | manager->pipe = crtc; | |
241 | ||
242 | if (manager_ops->enable_vblank) | |
243 | manager_ops->enable_vblank(manager->dev); | |
244 | } | |
245 | ||
246 | void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data) | |
247 | { | |
248 | struct exynos_drm_manager *manager = | |
249 | to_exynos_encoder(encoder)->manager; | |
250 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
251 | int crtc = *(int *)data; | |
252 | ||
253 | if (manager->pipe == -1) | |
254 | manager->pipe = crtc; | |
255 | ||
256 | if (manager_ops->disable_vblank) | |
257 | manager_ops->disable_vblank(manager->dev); | |
258 | } | |
259 | ||
260 | void exynos_drm_encoder_crtc_commit(struct drm_encoder *encoder, void *data) | |
261 | { | |
262 | struct exynos_drm_manager *manager = | |
263 | to_exynos_encoder(encoder)->manager; | |
264 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
d2716c89 JS |
265 | int crtc = *(int *)data; |
266 | ||
267 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
1c248b7d | 268 | |
d2716c89 JS |
269 | /* |
270 | * when crtc is detached from encoder, this pipe is used | |
271 | * to select manager operation | |
272 | */ | |
273 | manager->pipe = crtc; | |
274 | ||
275 | if (overlay_ops && overlay_ops->commit) | |
276 | overlay_ops->commit(manager->dev); | |
1c248b7d ID |
277 | } |
278 | ||
279 | void exynos_drm_encoder_crtc_mode_set(struct drm_encoder *encoder, void *data) | |
280 | { | |
281 | struct exynos_drm_manager *manager = | |
282 | to_exynos_encoder(encoder)->manager; | |
283 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
284 | struct exynos_drm_overlay *overlay = data; | |
285 | ||
b0e0f856 SWK |
286 | if (overlay_ops && overlay_ops->mode_set) |
287 | overlay_ops->mode_set(manager->dev, overlay); | |
1c248b7d ID |
288 | } |
289 | ||
d2716c89 JS |
290 | void exynos_drm_encoder_crtc_disable(struct drm_encoder *encoder, void *data) |
291 | { | |
292 | struct exynos_drm_manager *manager = | |
293 | to_exynos_encoder(encoder)->manager; | |
294 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
295 | ||
296 | DRM_DEBUG_KMS("\n"); | |
297 | ||
b0e0f856 SWK |
298 | if (overlay_ops && overlay_ops->disable) |
299 | overlay_ops->disable(manager->dev); | |
d2716c89 JS |
300 | |
301 | /* | |
302 | * crtc is already detached from encoder and last | |
303 | * function for detaching is properly done, so | |
304 | * clear pipe from manager to prevent repeated call | |
305 | */ | |
306 | if (!encoder->crtc) | |
307 | manager->pipe = -1; | |
308 | } | |
309 | ||
1c248b7d ID |
310 | MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); |
311 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
312 | MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); | |
313 | MODULE_DESCRIPTION("Samsung SoC DRM Encoder Driver"); | |
314 | MODULE_LICENSE("GPL"); |