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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 | |
74ccc539 ID |
64 | if (display_ops && display_ops->power_on) |
65 | display_ops->power_on(manager->dev, mode); | |
1c248b7d ID |
66 | } |
67 | } | |
68 | } | |
69 | ||
70 | static bool | |
71 | exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder, | |
72 | struct drm_display_mode *mode, | |
73 | struct drm_display_mode *adjusted_mode) | |
74 | { | |
75 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
76 | ||
77 | /* drm framework doesn't check NULL. */ | |
78 | ||
79 | return true; | |
80 | } | |
81 | ||
82 | static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder, | |
83 | struct drm_display_mode *mode, | |
84 | struct drm_display_mode *adjusted_mode) | |
85 | { | |
86 | struct drm_device *dev = encoder->dev; | |
87 | struct drm_connector *connector; | |
88 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
89 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
90 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
91 | struct exynos_drm_overlay *overlay = get_exynos_drm_overlay(dev, | |
92 | encoder->crtc); | |
93 | ||
94 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
95 | ||
96 | mode = adjusted_mode; | |
97 | ||
98 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
99 | if (connector->encoder == encoder) { | |
100 | if (manager_ops && manager_ops->mode_set) | |
101 | manager_ops->mode_set(manager->dev, mode); | |
102 | ||
103 | if (overlay_ops && overlay_ops->mode_set) | |
104 | overlay_ops->mode_set(manager->dev, overlay); | |
105 | } | |
106 | } | |
107 | } | |
108 | ||
109 | static void exynos_drm_encoder_prepare(struct drm_encoder *encoder) | |
110 | { | |
111 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
112 | ||
113 | /* drm framework doesn't check NULL. */ | |
114 | } | |
115 | ||
116 | static void exynos_drm_encoder_commit(struct drm_encoder *encoder) | |
117 | { | |
118 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
119 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
120 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
121 | ||
122 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
123 | ||
124 | if (manager_ops && manager_ops->commit) | |
125 | manager_ops->commit(manager->dev); | |
126 | ||
127 | if (overlay_ops && overlay_ops->commit) | |
128 | overlay_ops->commit(manager->dev); | |
129 | } | |
130 | ||
131 | static struct drm_crtc * | |
132 | exynos_drm_encoder_get_crtc(struct drm_encoder *encoder) | |
133 | { | |
134 | return encoder->crtc; | |
135 | } | |
136 | ||
137 | static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = { | |
138 | .dpms = exynos_drm_encoder_dpms, | |
139 | .mode_fixup = exynos_drm_encoder_mode_fixup, | |
140 | .mode_set = exynos_drm_encoder_mode_set, | |
141 | .prepare = exynos_drm_encoder_prepare, | |
142 | .commit = exynos_drm_encoder_commit, | |
143 | .get_crtc = exynos_drm_encoder_get_crtc, | |
144 | }; | |
145 | ||
146 | static void exynos_drm_encoder_destroy(struct drm_encoder *encoder) | |
147 | { | |
148 | struct exynos_drm_encoder *exynos_encoder = | |
149 | to_exynos_encoder(encoder); | |
150 | ||
151 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
152 | ||
153 | exynos_encoder->manager->pipe = -1; | |
154 | ||
155 | drm_encoder_cleanup(encoder); | |
156 | encoder->dev->mode_config.num_encoder--; | |
157 | kfree(exynos_encoder); | |
158 | } | |
159 | ||
160 | static struct drm_encoder_funcs exynos_encoder_funcs = { | |
161 | .destroy = exynos_drm_encoder_destroy, | |
162 | }; | |
163 | ||
164 | struct drm_encoder * | |
165 | exynos_drm_encoder_create(struct drm_device *dev, | |
166 | struct exynos_drm_manager *manager, | |
167 | unsigned int possible_crtcs) | |
168 | { | |
169 | struct drm_encoder *encoder; | |
170 | struct exynos_drm_encoder *exynos_encoder; | |
171 | ||
172 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
173 | ||
174 | if (!manager || !possible_crtcs) | |
175 | return NULL; | |
176 | ||
177 | if (!manager->dev) | |
178 | return NULL; | |
179 | ||
180 | exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL); | |
181 | if (!exynos_encoder) { | |
182 | DRM_ERROR("failed to allocate encoder\n"); | |
183 | return NULL; | |
184 | } | |
185 | ||
186 | exynos_encoder->manager = manager; | |
187 | encoder = &exynos_encoder->drm_encoder; | |
188 | encoder->possible_crtcs = possible_crtcs; | |
189 | ||
190 | DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); | |
191 | ||
192 | drm_encoder_init(dev, encoder, &exynos_encoder_funcs, | |
193 | DRM_MODE_ENCODER_TMDS); | |
194 | ||
195 | drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs); | |
196 | ||
197 | DRM_DEBUG_KMS("encoder has been created\n"); | |
198 | ||
199 | return encoder; | |
200 | } | |
201 | ||
202 | struct exynos_drm_manager *exynos_drm_get_manager(struct drm_encoder *encoder) | |
203 | { | |
204 | return to_exynos_encoder(encoder)->manager; | |
205 | } | |
206 | ||
207 | void exynos_drm_fn_encoder(struct drm_crtc *crtc, void *data, | |
208 | void (*fn)(struct drm_encoder *, void *)) | |
209 | { | |
210 | struct drm_device *dev = crtc->dev; | |
211 | struct drm_encoder *encoder; | |
212 | ||
213 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
214 | if (encoder->crtc != crtc) | |
215 | continue; | |
216 | ||
217 | fn(encoder, data); | |
218 | } | |
219 | } | |
220 | ||
221 | void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data) | |
222 | { | |
223 | struct exynos_drm_manager *manager = | |
224 | to_exynos_encoder(encoder)->manager; | |
225 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
226 | int crtc = *(int *)data; | |
227 | ||
228 | if (manager->pipe == -1) | |
229 | manager->pipe = crtc; | |
230 | ||
231 | if (manager_ops->enable_vblank) | |
232 | manager_ops->enable_vblank(manager->dev); | |
233 | } | |
234 | ||
235 | void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data) | |
236 | { | |
237 | struct exynos_drm_manager *manager = | |
238 | to_exynos_encoder(encoder)->manager; | |
239 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
240 | int crtc = *(int *)data; | |
241 | ||
242 | if (manager->pipe == -1) | |
243 | manager->pipe = crtc; | |
244 | ||
245 | if (manager_ops->disable_vblank) | |
246 | manager_ops->disable_vblank(manager->dev); | |
247 | } | |
248 | ||
249 | void exynos_drm_encoder_crtc_commit(struct drm_encoder *encoder, void *data) | |
250 | { | |
251 | struct exynos_drm_manager *manager = | |
252 | to_exynos_encoder(encoder)->manager; | |
253 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
254 | ||
255 | overlay_ops->commit(manager->dev); | |
256 | } | |
257 | ||
258 | void exynos_drm_encoder_crtc_mode_set(struct drm_encoder *encoder, void *data) | |
259 | { | |
260 | struct exynos_drm_manager *manager = | |
261 | to_exynos_encoder(encoder)->manager; | |
262 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
263 | struct exynos_drm_overlay *overlay = data; | |
264 | ||
265 | overlay_ops->mode_set(manager->dev, overlay); | |
266 | } | |
267 | ||
268 | MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); | |
269 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
270 | MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); | |
271 | MODULE_DESCRIPTION("Samsung SoC DRM Encoder Driver"); | |
272 | MODULE_LICENSE("GPL"); |