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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. | |
ec05da95 | 45 | * @dpms: store the encoder dpms value. |
1c248b7d ID |
46 | */ |
47 | struct exynos_drm_encoder { | |
48 | struct drm_encoder drm_encoder; | |
49 | struct exynos_drm_manager *manager; | |
ec05da95 | 50 | int dpms; |
1c248b7d ID |
51 | }; |
52 | ||
ec05da95 | 53 | static void exynos_drm_display_power(struct drm_encoder *encoder, int mode) |
1c248b7d ID |
54 | { |
55 | struct drm_device *dev = encoder->dev; | |
56 | struct drm_connector *connector; | |
57 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
ec05da95 ID |
58 | |
59 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
60 | if (connector->encoder == encoder) { | |
61 | struct exynos_drm_display_ops *display_ops = | |
62 | manager->display_ops; | |
63 | ||
64 | DRM_DEBUG_KMS("connector[%d] dpms[%d]\n", | |
65 | connector->base.id, mode); | |
66 | if (display_ops && display_ops->power_on) | |
67 | display_ops->power_on(manager->dev, mode); | |
68 | } | |
69 | } | |
70 | } | |
71 | ||
72 | static void exynos_drm_encoder_dpms(struct drm_encoder *encoder, int mode) | |
73 | { | |
74 | struct drm_device *dev = encoder->dev; | |
75 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
396464df | 76 | struct exynos_drm_manager_ops *manager_ops = manager->ops; |
ec05da95 | 77 | struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); |
1c248b7d ID |
78 | |
79 | DRM_DEBUG_KMS("%s, encoder dpms: %d\n", __FILE__, mode); | |
80 | ||
ec05da95 ID |
81 | if (exynos_encoder->dpms == mode) { |
82 | DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n"); | |
83 | return; | |
84 | } | |
85 | ||
86 | mutex_lock(&dev->struct_mutex); | |
87 | ||
396464df JS |
88 | switch (mode) { |
89 | case DRM_MODE_DPMS_ON: | |
ec05da95 ID |
90 | if (manager_ops && manager_ops->apply) |
91 | manager_ops->apply(manager->dev); | |
92 | exynos_drm_display_power(encoder, mode); | |
93 | exynos_encoder->dpms = mode; | |
396464df JS |
94 | break; |
95 | case DRM_MODE_DPMS_STANDBY: | |
96 | case DRM_MODE_DPMS_SUSPEND: | |
97 | case DRM_MODE_DPMS_OFF: | |
ec05da95 ID |
98 | exynos_drm_display_power(encoder, mode); |
99 | exynos_encoder->dpms = mode; | |
396464df JS |
100 | break; |
101 | default: | |
102 | DRM_ERROR("unspecified mode %d\n", mode); | |
103 | break; | |
104 | } | |
105 | ||
ec05da95 | 106 | mutex_unlock(&dev->struct_mutex); |
1c248b7d ID |
107 | } |
108 | ||
109 | static bool | |
110 | exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder, | |
111 | struct drm_display_mode *mode, | |
112 | struct drm_display_mode *adjusted_mode) | |
113 | { | |
114 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
115 | ||
116 | /* drm framework doesn't check NULL. */ | |
117 | ||
118 | return true; | |
119 | } | |
120 | ||
121 | static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder, | |
122 | struct drm_display_mode *mode, | |
123 | struct drm_display_mode *adjusted_mode) | |
124 | { | |
125 | struct drm_device *dev = encoder->dev; | |
126 | struct drm_connector *connector; | |
127 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
128 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
129 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
130 | struct exynos_drm_overlay *overlay = get_exynos_drm_overlay(dev, | |
131 | encoder->crtc); | |
132 | ||
133 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
134 | ||
135 | mode = adjusted_mode; | |
136 | ||
137 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
138 | if (connector->encoder == encoder) { | |
139 | if (manager_ops && manager_ops->mode_set) | |
140 | manager_ops->mode_set(manager->dev, mode); | |
141 | ||
142 | if (overlay_ops && overlay_ops->mode_set) | |
143 | overlay_ops->mode_set(manager->dev, overlay); | |
144 | } | |
145 | } | |
146 | } | |
147 | ||
148 | static void exynos_drm_encoder_prepare(struct drm_encoder *encoder) | |
149 | { | |
150 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
151 | ||
152 | /* drm framework doesn't check NULL. */ | |
153 | } | |
154 | ||
155 | static void exynos_drm_encoder_commit(struct drm_encoder *encoder) | |
156 | { | |
157 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
158 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
1c248b7d ID |
159 | |
160 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
161 | ||
162 | if (manager_ops && manager_ops->commit) | |
163 | manager_ops->commit(manager->dev); | |
1c248b7d ID |
164 | } |
165 | ||
166 | static struct drm_crtc * | |
167 | exynos_drm_encoder_get_crtc(struct drm_encoder *encoder) | |
168 | { | |
169 | return encoder->crtc; | |
170 | } | |
171 | ||
172 | static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = { | |
173 | .dpms = exynos_drm_encoder_dpms, | |
174 | .mode_fixup = exynos_drm_encoder_mode_fixup, | |
175 | .mode_set = exynos_drm_encoder_mode_set, | |
176 | .prepare = exynos_drm_encoder_prepare, | |
177 | .commit = exynos_drm_encoder_commit, | |
178 | .get_crtc = exynos_drm_encoder_get_crtc, | |
179 | }; | |
180 | ||
181 | static void exynos_drm_encoder_destroy(struct drm_encoder *encoder) | |
182 | { | |
183 | struct exynos_drm_encoder *exynos_encoder = | |
184 | to_exynos_encoder(encoder); | |
185 | ||
186 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
187 | ||
188 | exynos_encoder->manager->pipe = -1; | |
189 | ||
190 | drm_encoder_cleanup(encoder); | |
1c248b7d ID |
191 | kfree(exynos_encoder); |
192 | } | |
193 | ||
194 | static struct drm_encoder_funcs exynos_encoder_funcs = { | |
195 | .destroy = exynos_drm_encoder_destroy, | |
196 | }; | |
197 | ||
198 | struct drm_encoder * | |
199 | exynos_drm_encoder_create(struct drm_device *dev, | |
200 | struct exynos_drm_manager *manager, | |
201 | unsigned int possible_crtcs) | |
202 | { | |
203 | struct drm_encoder *encoder; | |
204 | struct exynos_drm_encoder *exynos_encoder; | |
205 | ||
206 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
207 | ||
208 | if (!manager || !possible_crtcs) | |
209 | return NULL; | |
210 | ||
211 | if (!manager->dev) | |
212 | return NULL; | |
213 | ||
214 | exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL); | |
215 | if (!exynos_encoder) { | |
216 | DRM_ERROR("failed to allocate encoder\n"); | |
217 | return NULL; | |
218 | } | |
219 | ||
ec05da95 | 220 | exynos_encoder->dpms = DRM_MODE_DPMS_OFF; |
1c248b7d ID |
221 | exynos_encoder->manager = manager; |
222 | encoder = &exynos_encoder->drm_encoder; | |
223 | encoder->possible_crtcs = possible_crtcs; | |
224 | ||
225 | DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); | |
226 | ||
227 | drm_encoder_init(dev, encoder, &exynos_encoder_funcs, | |
228 | DRM_MODE_ENCODER_TMDS); | |
229 | ||
230 | drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs); | |
231 | ||
232 | DRM_DEBUG_KMS("encoder has been created\n"); | |
233 | ||
234 | return encoder; | |
235 | } | |
236 | ||
237 | struct exynos_drm_manager *exynos_drm_get_manager(struct drm_encoder *encoder) | |
238 | { | |
239 | return to_exynos_encoder(encoder)->manager; | |
240 | } | |
241 | ||
242 | void exynos_drm_fn_encoder(struct drm_crtc *crtc, void *data, | |
243 | void (*fn)(struct drm_encoder *, void *)) | |
244 | { | |
245 | struct drm_device *dev = crtc->dev; | |
246 | struct drm_encoder *encoder; | |
d2716c89 JS |
247 | struct exynos_drm_private *private = dev->dev_private; |
248 | struct exynos_drm_manager *manager; | |
1c248b7d ID |
249 | |
250 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
d2716c89 JS |
251 | /* |
252 | * if crtc is detached from encoder, check pipe, | |
253 | * otherwise check crtc attached to encoder | |
254 | */ | |
255 | if (!encoder->crtc) { | |
256 | manager = to_exynos_encoder(encoder)->manager; | |
257 | if (manager->pipe < 0 || | |
258 | private->crtc[manager->pipe] != crtc) | |
259 | continue; | |
260 | } else { | |
261 | if (encoder->crtc != crtc) | |
262 | continue; | |
263 | } | |
1c248b7d ID |
264 | |
265 | fn(encoder, data); | |
266 | } | |
267 | } | |
268 | ||
269 | void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data) | |
270 | { | |
271 | struct exynos_drm_manager *manager = | |
272 | to_exynos_encoder(encoder)->manager; | |
273 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
274 | int crtc = *(int *)data; | |
275 | ||
276 | if (manager->pipe == -1) | |
277 | manager->pipe = crtc; | |
278 | ||
279 | if (manager_ops->enable_vblank) | |
280 | manager_ops->enable_vblank(manager->dev); | |
281 | } | |
282 | ||
283 | void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data) | |
284 | { | |
285 | struct exynos_drm_manager *manager = | |
286 | to_exynos_encoder(encoder)->manager; | |
287 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
288 | int crtc = *(int *)data; | |
289 | ||
290 | if (manager->pipe == -1) | |
291 | manager->pipe = crtc; | |
292 | ||
293 | if (manager_ops->disable_vblank) | |
294 | manager_ops->disable_vblank(manager->dev); | |
295 | } | |
296 | ||
297 | void exynos_drm_encoder_crtc_commit(struct drm_encoder *encoder, void *data) | |
298 | { | |
299 | struct exynos_drm_manager *manager = | |
300 | to_exynos_encoder(encoder)->manager; | |
301 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
d2716c89 JS |
302 | int crtc = *(int *)data; |
303 | ||
304 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
1c248b7d | 305 | |
d2716c89 JS |
306 | /* |
307 | * when crtc is detached from encoder, this pipe is used | |
308 | * to select manager operation | |
309 | */ | |
310 | manager->pipe = crtc; | |
311 | ||
312 | if (overlay_ops && overlay_ops->commit) | |
313 | overlay_ops->commit(manager->dev); | |
1c248b7d ID |
314 | } |
315 | ||
ec05da95 ID |
316 | void exynos_drm_encoder_dpms_from_crtc(struct drm_encoder *encoder, void *data) |
317 | { | |
318 | struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); | |
319 | int mode = *(int *)data; | |
320 | ||
321 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
322 | ||
323 | exynos_drm_encoder_dpms(encoder, mode); | |
324 | ||
325 | exynos_encoder->dpms = mode; | |
326 | } | |
327 | ||
328 | void exynos_drm_encoder_crtc_dpms(struct drm_encoder *encoder, void *data) | |
329 | { | |
330 | struct drm_device *dev = encoder->dev; | |
331 | struct exynos_drm_encoder *exynos_encoder = to_exynos_encoder(encoder); | |
332 | struct exynos_drm_manager *manager = exynos_encoder->manager; | |
333 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
334 | struct drm_connector *connector; | |
335 | int mode = *(int *)data; | |
336 | ||
337 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
338 | ||
339 | if (manager_ops && manager_ops->dpms) | |
340 | manager_ops->dpms(manager->dev, mode); | |
341 | ||
342 | /* | |
343 | * set current dpms mode to the connector connected to | |
344 | * current encoder. connector->dpms would be checked | |
345 | * at drm_helper_connector_dpms() | |
346 | */ | |
347 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
348 | if (connector->encoder == encoder) | |
349 | connector->dpms = mode; | |
350 | ||
351 | /* | |
352 | * if this condition is ok then it means that the crtc is already | |
353 | * detached from encoder and last function for detaching is properly | |
354 | * done, so clear pipe from manager to prevent repeated call. | |
355 | */ | |
356 | if (mode > DRM_MODE_DPMS_ON) { | |
357 | if (!encoder->crtc) | |
358 | manager->pipe = -1; | |
359 | } | |
360 | } | |
361 | ||
1c248b7d ID |
362 | void exynos_drm_encoder_crtc_mode_set(struct drm_encoder *encoder, void *data) |
363 | { | |
364 | struct exynos_drm_manager *manager = | |
365 | to_exynos_encoder(encoder)->manager; | |
366 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
367 | struct exynos_drm_overlay *overlay = data; | |
368 | ||
b0e0f856 SWK |
369 | if (overlay_ops && overlay_ops->mode_set) |
370 | overlay_ops->mode_set(manager->dev, overlay); | |
1c248b7d ID |
371 | } |
372 | ||
d2716c89 JS |
373 | void exynos_drm_encoder_crtc_disable(struct drm_encoder *encoder, void *data) |
374 | { | |
375 | struct exynos_drm_manager *manager = | |
376 | to_exynos_encoder(encoder)->manager; | |
377 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
378 | ||
379 | DRM_DEBUG_KMS("\n"); | |
380 | ||
b0e0f856 SWK |
381 | if (overlay_ops && overlay_ops->disable) |
382 | overlay_ops->disable(manager->dev); | |
d2716c89 JS |
383 | } |
384 | ||
1c248b7d ID |
385 | MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); |
386 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
387 | MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); | |
388 | MODULE_DESCRIPTION("Samsung SoC DRM Encoder Driver"); | |
389 | MODULE_LICENSE("GPL"); |