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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) { | |
61 | struct exynos_drm_display *display = manager->display; | |
62 | ||
63 | if (display && display->power_on) | |
64 | display->power_on(manager->dev, mode); | |
65 | } | |
66 | } | |
67 | } | |
68 | ||
69 | static bool | |
70 | exynos_drm_encoder_mode_fixup(struct drm_encoder *encoder, | |
71 | struct drm_display_mode *mode, | |
72 | struct drm_display_mode *adjusted_mode) | |
73 | { | |
74 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
75 | ||
76 | /* drm framework doesn't check NULL. */ | |
77 | ||
78 | return true; | |
79 | } | |
80 | ||
81 | static void exynos_drm_encoder_mode_set(struct drm_encoder *encoder, | |
82 | struct drm_display_mode *mode, | |
83 | struct drm_display_mode *adjusted_mode) | |
84 | { | |
85 | struct drm_device *dev = encoder->dev; | |
86 | struct drm_connector *connector; | |
87 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
88 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
89 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
90 | struct exynos_drm_overlay *overlay = get_exynos_drm_overlay(dev, | |
91 | encoder->crtc); | |
92 | ||
93 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
94 | ||
95 | mode = adjusted_mode; | |
96 | ||
97 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
98 | if (connector->encoder == encoder) { | |
99 | if (manager_ops && manager_ops->mode_set) | |
100 | manager_ops->mode_set(manager->dev, mode); | |
101 | ||
102 | if (overlay_ops && overlay_ops->mode_set) | |
103 | overlay_ops->mode_set(manager->dev, overlay); | |
104 | } | |
105 | } | |
106 | } | |
107 | ||
108 | static void exynos_drm_encoder_prepare(struct drm_encoder *encoder) | |
109 | { | |
110 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
111 | ||
112 | /* drm framework doesn't check NULL. */ | |
113 | } | |
114 | ||
115 | static void exynos_drm_encoder_commit(struct drm_encoder *encoder) | |
116 | { | |
117 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
118 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
119 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
120 | ||
121 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
122 | ||
123 | if (manager_ops && manager_ops->commit) | |
124 | manager_ops->commit(manager->dev); | |
125 | ||
126 | if (overlay_ops && overlay_ops->commit) | |
127 | overlay_ops->commit(manager->dev); | |
128 | } | |
129 | ||
130 | static struct drm_crtc * | |
131 | exynos_drm_encoder_get_crtc(struct drm_encoder *encoder) | |
132 | { | |
133 | return encoder->crtc; | |
134 | } | |
135 | ||
136 | static struct drm_encoder_helper_funcs exynos_encoder_helper_funcs = { | |
137 | .dpms = exynos_drm_encoder_dpms, | |
138 | .mode_fixup = exynos_drm_encoder_mode_fixup, | |
139 | .mode_set = exynos_drm_encoder_mode_set, | |
140 | .prepare = exynos_drm_encoder_prepare, | |
141 | .commit = exynos_drm_encoder_commit, | |
142 | .get_crtc = exynos_drm_encoder_get_crtc, | |
143 | }; | |
144 | ||
145 | static void exynos_drm_encoder_destroy(struct drm_encoder *encoder) | |
146 | { | |
147 | struct exynos_drm_encoder *exynos_encoder = | |
148 | to_exynos_encoder(encoder); | |
149 | ||
150 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
151 | ||
152 | exynos_encoder->manager->pipe = -1; | |
153 | ||
154 | drm_encoder_cleanup(encoder); | |
155 | encoder->dev->mode_config.num_encoder--; | |
156 | kfree(exynos_encoder); | |
157 | } | |
158 | ||
159 | static struct drm_encoder_funcs exynos_encoder_funcs = { | |
160 | .destroy = exynos_drm_encoder_destroy, | |
161 | }; | |
162 | ||
163 | struct drm_encoder * | |
164 | exynos_drm_encoder_create(struct drm_device *dev, | |
165 | struct exynos_drm_manager *manager, | |
166 | unsigned int possible_crtcs) | |
167 | { | |
168 | struct drm_encoder *encoder; | |
169 | struct exynos_drm_encoder *exynos_encoder; | |
170 | ||
171 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
172 | ||
173 | if (!manager || !possible_crtcs) | |
174 | return NULL; | |
175 | ||
176 | if (!manager->dev) | |
177 | return NULL; | |
178 | ||
179 | exynos_encoder = kzalloc(sizeof(*exynos_encoder), GFP_KERNEL); | |
180 | if (!exynos_encoder) { | |
181 | DRM_ERROR("failed to allocate encoder\n"); | |
182 | return NULL; | |
183 | } | |
184 | ||
185 | exynos_encoder->manager = manager; | |
186 | encoder = &exynos_encoder->drm_encoder; | |
187 | encoder->possible_crtcs = possible_crtcs; | |
188 | ||
189 | DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); | |
190 | ||
191 | drm_encoder_init(dev, encoder, &exynos_encoder_funcs, | |
192 | DRM_MODE_ENCODER_TMDS); | |
193 | ||
194 | drm_encoder_helper_add(encoder, &exynos_encoder_helper_funcs); | |
195 | ||
196 | DRM_DEBUG_KMS("encoder has been created\n"); | |
197 | ||
198 | return encoder; | |
199 | } | |
200 | ||
201 | struct exynos_drm_manager *exynos_drm_get_manager(struct drm_encoder *encoder) | |
202 | { | |
203 | return to_exynos_encoder(encoder)->manager; | |
204 | } | |
205 | ||
206 | void exynos_drm_fn_encoder(struct drm_crtc *crtc, void *data, | |
207 | void (*fn)(struct drm_encoder *, void *)) | |
208 | { | |
209 | struct drm_device *dev = crtc->dev; | |
210 | struct drm_encoder *encoder; | |
211 | ||
212 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { | |
213 | if (encoder->crtc != crtc) | |
214 | continue; | |
215 | ||
216 | fn(encoder, data); | |
217 | } | |
218 | } | |
219 | ||
220 | void exynos_drm_enable_vblank(struct drm_encoder *encoder, void *data) | |
221 | { | |
222 | struct exynos_drm_manager *manager = | |
223 | to_exynos_encoder(encoder)->manager; | |
224 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
225 | int crtc = *(int *)data; | |
226 | ||
227 | if (manager->pipe == -1) | |
228 | manager->pipe = crtc; | |
229 | ||
230 | if (manager_ops->enable_vblank) | |
231 | manager_ops->enable_vblank(manager->dev); | |
232 | } | |
233 | ||
234 | void exynos_drm_disable_vblank(struct drm_encoder *encoder, void *data) | |
235 | { | |
236 | struct exynos_drm_manager *manager = | |
237 | to_exynos_encoder(encoder)->manager; | |
238 | struct exynos_drm_manager_ops *manager_ops = manager->ops; | |
239 | int crtc = *(int *)data; | |
240 | ||
241 | if (manager->pipe == -1) | |
242 | manager->pipe = crtc; | |
243 | ||
244 | if (manager_ops->disable_vblank) | |
245 | manager_ops->disable_vblank(manager->dev); | |
246 | } | |
247 | ||
248 | void exynos_drm_encoder_crtc_commit(struct drm_encoder *encoder, void *data) | |
249 | { | |
250 | struct exynos_drm_manager *manager = | |
251 | to_exynos_encoder(encoder)->manager; | |
252 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
253 | ||
254 | overlay_ops->commit(manager->dev); | |
255 | } | |
256 | ||
257 | void exynos_drm_encoder_crtc_mode_set(struct drm_encoder *encoder, void *data) | |
258 | { | |
259 | struct exynos_drm_manager *manager = | |
260 | to_exynos_encoder(encoder)->manager; | |
261 | struct exynos_drm_overlay_ops *overlay_ops = manager->overlay_ops; | |
262 | struct exynos_drm_overlay *overlay = data; | |
263 | ||
264 | overlay_ops->mode_set(manager->dev, overlay); | |
265 | } | |
266 | ||
267 | MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); | |
268 | MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); | |
269 | MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); | |
270 | MODULE_DESCRIPTION("Samsung SoC DRM Encoder Driver"); | |
271 | MODULE_LICENSE("GPL"); |