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1c248b7d ID |
1 | /* |
2 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. | |
3 | * Authors: | |
4 | * Inki Dae <inki.dae@samsung.com> | |
5 | * Joonyoung Shim <jy0922.shim@samsung.com> | |
6 | * Seung-Woo Kim <sw0312.kim@samsung.com> | |
7 | * | |
8 | * Permission is hereby granted, free of charge, to any person obtaining a | |
9 | * copy of this software and associated documentation files (the "Software"), | |
10 | * to deal in the Software without restriction, including without limitation | |
11 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
12 | * and/or sell copies of the Software, and to permit persons to whom the | |
13 | * Software is furnished to do so, subject to the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice (including the next | |
16 | * paragraph) shall be included in all copies or substantial portions of the | |
17 | * Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
22 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
23 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
24 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
25 | * OTHER DEALINGS IN THE SOFTWARE. | |
26 | */ | |
27 | ||
28 | #include "drmP.h" | |
29 | #include "drm_crtc_helper.h" | |
30 | ||
607c50d4 | 31 | #include <drm/exynos_drm.h> |
1c248b7d ID |
32 | #include "exynos_drm_drv.h" |
33 | #include "exynos_drm_encoder.h" | |
34 | ||
35 | #define MAX_EDID 256 | |
36 | #define to_exynos_connector(x) container_of(x, struct exynos_drm_connector,\ | |
37 | drm_connector) | |
38 | ||
39 | struct exynos_drm_connector { | |
40 | struct drm_connector drm_connector; | |
adb6b159 ID |
41 | uint32_t encoder_id; |
42 | struct exynos_drm_manager *manager; | |
1c248b7d ID |
43 | }; |
44 | ||
45 | /* convert exynos_video_timings to drm_display_mode */ | |
46 | static inline void | |
47 | convert_to_display_mode(struct drm_display_mode *mode, | |
607c50d4 | 48 | struct exynos_drm_panel_info *panel) |
1c248b7d | 49 | { |
607c50d4 | 50 | struct fb_videomode *timing = &panel->timing; |
1c248b7d ID |
51 | DRM_DEBUG_KMS("%s\n", __FILE__); |
52 | ||
53 | mode->clock = timing->pixclock / 1000; | |
8b58dfe0 | 54 | mode->vrefresh = timing->refresh; |
1c248b7d ID |
55 | |
56 | mode->hdisplay = timing->xres; | |
f7d86075 | 57 | mode->hsync_start = mode->hdisplay + timing->right_margin; |
1c248b7d | 58 | mode->hsync_end = mode->hsync_start + timing->hsync_len; |
f7d86075 | 59 | mode->htotal = mode->hsync_end + timing->left_margin; |
1c248b7d ID |
60 | |
61 | mode->vdisplay = timing->yres; | |
f7d86075 | 62 | mode->vsync_start = mode->vdisplay + timing->lower_margin; |
1c248b7d | 63 | mode->vsync_end = mode->vsync_start + timing->vsync_len; |
f7d86075 | 64 | mode->vtotal = mode->vsync_end + timing->upper_margin; |
607c50d4 ECK |
65 | mode->width_mm = panel->width_mm; |
66 | mode->height_mm = panel->height_mm; | |
8b58dfe0 SWK |
67 | |
68 | if (timing->vmode & FB_VMODE_INTERLACED) | |
69 | mode->flags |= DRM_MODE_FLAG_INTERLACE; | |
70 | ||
71 | if (timing->vmode & FB_VMODE_DOUBLE) | |
72 | mode->flags |= DRM_MODE_FLAG_DBLSCAN; | |
1c248b7d ID |
73 | } |
74 | ||
75 | /* convert drm_display_mode to exynos_video_timings */ | |
76 | static inline void | |
77 | convert_to_video_timing(struct fb_videomode *timing, | |
78 | struct drm_display_mode *mode) | |
79 | { | |
80 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
81 | ||
82 | memset(timing, 0, sizeof(*timing)); | |
83 | ||
84 | timing->pixclock = mode->clock * 1000; | |
8b58dfe0 | 85 | timing->refresh = drm_mode_vrefresh(mode); |
1c248b7d ID |
86 | |
87 | timing->xres = mode->hdisplay; | |
f7d86075 | 88 | timing->right_margin = mode->hsync_start - mode->hdisplay; |
1c248b7d | 89 | timing->hsync_len = mode->hsync_end - mode->hsync_start; |
f7d86075 | 90 | timing->left_margin = mode->htotal - mode->hsync_end; |
1c248b7d ID |
91 | |
92 | timing->yres = mode->vdisplay; | |
f7d86075 | 93 | timing->lower_margin = mode->vsync_start - mode->vdisplay; |
1c248b7d | 94 | timing->vsync_len = mode->vsync_end - mode->vsync_start; |
f7d86075 | 95 | timing->upper_margin = mode->vtotal - mode->vsync_end; |
1c248b7d ID |
96 | |
97 | if (mode->flags & DRM_MODE_FLAG_INTERLACE) | |
98 | timing->vmode = FB_VMODE_INTERLACED; | |
99 | else | |
100 | timing->vmode = FB_VMODE_NONINTERLACED; | |
101 | ||
102 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) | |
103 | timing->vmode |= FB_VMODE_DOUBLE; | |
104 | } | |
105 | ||
106 | static int exynos_drm_connector_get_modes(struct drm_connector *connector) | |
107 | { | |
adb6b159 ID |
108 | struct exynos_drm_connector *exynos_connector = |
109 | to_exynos_connector(connector); | |
110 | struct exynos_drm_manager *manager = exynos_connector->manager; | |
74ccc539 | 111 | struct exynos_drm_display_ops *display_ops = manager->display_ops; |
1c248b7d ID |
112 | unsigned int count; |
113 | ||
114 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
115 | ||
74ccc539 ID |
116 | if (!display_ops) { |
117 | DRM_DEBUG_KMS("display_ops is null.\n"); | |
1c248b7d ID |
118 | return 0; |
119 | } | |
120 | ||
121 | /* | |
122 | * if get_edid() exists then get_edid() callback of hdmi side | |
123 | * is called to get edid data through i2c interface else | |
124 | * get timing from the FIMD driver(display controller). | |
125 | * | |
126 | * P.S. in case of lcd panel, count is always 1 if success | |
127 | * because lcd panel has only one mode. | |
128 | */ | |
74ccc539 | 129 | if (display_ops->get_edid) { |
1c248b7d ID |
130 | int ret; |
131 | void *edid; | |
132 | ||
133 | edid = kzalloc(MAX_EDID, GFP_KERNEL); | |
134 | if (!edid) { | |
135 | DRM_ERROR("failed to allocate edid\n"); | |
136 | return 0; | |
137 | } | |
138 | ||
74ccc539 | 139 | ret = display_ops->get_edid(manager->dev, connector, |
1c248b7d ID |
140 | edid, MAX_EDID); |
141 | if (ret < 0) { | |
142 | DRM_ERROR("failed to get edid data.\n"); | |
143 | kfree(edid); | |
144 | edid = NULL; | |
145 | return 0; | |
146 | } | |
147 | ||
148 | drm_mode_connector_update_edid_property(connector, edid); | |
149 | count = drm_add_edid_modes(connector, edid); | |
150 | ||
151 | kfree(connector->display_info.raw_edid); | |
152 | connector->display_info.raw_edid = edid; | |
153 | } else { | |
154 | struct drm_display_mode *mode = drm_mode_create(connector->dev); | |
607c50d4 | 155 | struct exynos_drm_panel_info *panel; |
1c248b7d | 156 | |
607c50d4 ECK |
157 | if (display_ops->get_panel) |
158 | panel = display_ops->get_panel(manager->dev); | |
1c248b7d ID |
159 | else { |
160 | drm_mode_destroy(connector->dev, mode); | |
161 | return 0; | |
162 | } | |
163 | ||
607c50d4 ECK |
164 | convert_to_display_mode(mode, panel); |
165 | connector->display_info.width_mm = mode->width_mm; | |
166 | connector->display_info.height_mm = mode->height_mm; | |
1c248b7d ID |
167 | |
168 | mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; | |
169 | drm_mode_set_name(mode); | |
170 | drm_mode_probed_add(connector, mode); | |
171 | ||
172 | count = 1; | |
173 | } | |
174 | ||
175 | return count; | |
176 | } | |
177 | ||
178 | static int exynos_drm_connector_mode_valid(struct drm_connector *connector, | |
179 | struct drm_display_mode *mode) | |
180 | { | |
adb6b159 ID |
181 | struct exynos_drm_connector *exynos_connector = |
182 | to_exynos_connector(connector); | |
183 | struct exynos_drm_manager *manager = exynos_connector->manager; | |
74ccc539 | 184 | struct exynos_drm_display_ops *display_ops = manager->display_ops; |
1c248b7d ID |
185 | struct fb_videomode timing; |
186 | int ret = MODE_BAD; | |
187 | ||
188 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
189 | ||
190 | convert_to_video_timing(&timing, mode); | |
191 | ||
74ccc539 ID |
192 | if (display_ops && display_ops->check_timing) |
193 | if (!display_ops->check_timing(manager->dev, (void *)&timing)) | |
1c248b7d ID |
194 | ret = MODE_OK; |
195 | ||
196 | return ret; | |
197 | } | |
198 | ||
2fb16de3 SK |
199 | static struct drm_encoder *exynos_drm_best_encoder( |
200 | struct drm_connector *connector) | |
1c248b7d | 201 | { |
adb6b159 ID |
202 | struct drm_device *dev = connector->dev; |
203 | struct exynos_drm_connector *exynos_connector = | |
204 | to_exynos_connector(connector); | |
205 | struct drm_mode_object *obj; | |
206 | struct drm_encoder *encoder; | |
207 | ||
1c248b7d ID |
208 | DRM_DEBUG_KMS("%s\n", __FILE__); |
209 | ||
adb6b159 ID |
210 | obj = drm_mode_object_find(dev, exynos_connector->encoder_id, |
211 | DRM_MODE_OBJECT_ENCODER); | |
212 | if (!obj) { | |
213 | DRM_DEBUG_KMS("Unknown ENCODER ID %d\n", | |
214 | exynos_connector->encoder_id); | |
215 | return NULL; | |
216 | } | |
217 | ||
218 | encoder = obj_to_encoder(obj); | |
219 | ||
220 | return encoder; | |
1c248b7d ID |
221 | } |
222 | ||
223 | static struct drm_connector_helper_funcs exynos_connector_helper_funcs = { | |
224 | .get_modes = exynos_drm_connector_get_modes, | |
225 | .mode_valid = exynos_drm_connector_mode_valid, | |
226 | .best_encoder = exynos_drm_best_encoder, | |
227 | }; | |
228 | ||
1de425b0 ID |
229 | static int exynos_drm_connector_fill_modes(struct drm_connector *connector, |
230 | unsigned int max_width, unsigned int max_height) | |
231 | { | |
232 | struct exynos_drm_connector *exynos_connector = | |
233 | to_exynos_connector(connector); | |
234 | struct exynos_drm_manager *manager = exynos_connector->manager; | |
235 | struct exynos_drm_manager_ops *ops = manager->ops; | |
236 | unsigned int width, height; | |
237 | ||
238 | width = max_width; | |
239 | height = max_height; | |
240 | ||
241 | /* | |
242 | * if specific driver want to find desired_mode using maxmum | |
243 | * resolution then get max width and height from that driver. | |
244 | */ | |
245 | if (ops && ops->get_max_resol) | |
246 | ops->get_max_resol(manager->dev, &width, &height); | |
247 | ||
248 | return drm_helper_probe_single_connector_modes(connector, width, | |
249 | height); | |
250 | } | |
251 | ||
1c248b7d ID |
252 | /* get detection status of display device. */ |
253 | static enum drm_connector_status | |
254 | exynos_drm_connector_detect(struct drm_connector *connector, bool force) | |
255 | { | |
adb6b159 ID |
256 | struct exynos_drm_connector *exynos_connector = |
257 | to_exynos_connector(connector); | |
258 | struct exynos_drm_manager *manager = exynos_connector->manager; | |
74ccc539 ID |
259 | struct exynos_drm_display_ops *display_ops = |
260 | manager->display_ops; | |
1c248b7d ID |
261 | enum drm_connector_status status = connector_status_disconnected; |
262 | ||
263 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
264 | ||
74ccc539 ID |
265 | if (display_ops && display_ops->is_connected) { |
266 | if (display_ops->is_connected(manager->dev)) | |
1c248b7d ID |
267 | status = connector_status_connected; |
268 | else | |
269 | status = connector_status_disconnected; | |
270 | } | |
271 | ||
272 | return status; | |
273 | } | |
274 | ||
275 | static void exynos_drm_connector_destroy(struct drm_connector *connector) | |
276 | { | |
277 | struct exynos_drm_connector *exynos_connector = | |
278 | to_exynos_connector(connector); | |
279 | ||
280 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
281 | ||
282 | drm_sysfs_connector_remove(connector); | |
283 | drm_connector_cleanup(connector); | |
284 | kfree(exynos_connector); | |
285 | } | |
286 | ||
287 | static struct drm_connector_funcs exynos_connector_funcs = { | |
288 | .dpms = drm_helper_connector_dpms, | |
1de425b0 | 289 | .fill_modes = exynos_drm_connector_fill_modes, |
1c248b7d ID |
290 | .detect = exynos_drm_connector_detect, |
291 | .destroy = exynos_drm_connector_destroy, | |
292 | }; | |
293 | ||
294 | struct drm_connector *exynos_drm_connector_create(struct drm_device *dev, | |
295 | struct drm_encoder *encoder) | |
296 | { | |
297 | struct exynos_drm_connector *exynos_connector; | |
298 | struct exynos_drm_manager *manager = exynos_drm_get_manager(encoder); | |
299 | struct drm_connector *connector; | |
300 | int type; | |
301 | int err; | |
302 | ||
303 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
304 | ||
305 | exynos_connector = kzalloc(sizeof(*exynos_connector), GFP_KERNEL); | |
306 | if (!exynos_connector) { | |
307 | DRM_ERROR("failed to allocate connector\n"); | |
308 | return NULL; | |
309 | } | |
310 | ||
311 | connector = &exynos_connector->drm_connector; | |
312 | ||
74ccc539 | 313 | switch (manager->display_ops->type) { |
1c248b7d ID |
314 | case EXYNOS_DISPLAY_TYPE_HDMI: |
315 | type = DRM_MODE_CONNECTOR_HDMIA; | |
1b17b206 SWK |
316 | connector->interlace_allowed = true; |
317 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
1c248b7d | 318 | break; |
b73d1230 ID |
319 | case EXYNOS_DISPLAY_TYPE_VIDI: |
320 | type = DRM_MODE_CONNECTOR_VIRTUAL; | |
321 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
322 | break; | |
1c248b7d ID |
323 | default: |
324 | type = DRM_MODE_CONNECTOR_Unknown; | |
325 | break; | |
326 | } | |
327 | ||
328 | drm_connector_init(dev, connector, &exynos_connector_funcs, type); | |
329 | drm_connector_helper_add(connector, &exynos_connector_helper_funcs); | |
330 | ||
331 | err = drm_sysfs_connector_add(connector); | |
332 | if (err) | |
333 | goto err_connector; | |
334 | ||
adb6b159 ID |
335 | exynos_connector->encoder_id = encoder->base.id; |
336 | exynos_connector->manager = manager; | |
1c248b7d | 337 | connector->encoder = encoder; |
adb6b159 | 338 | |
1c248b7d ID |
339 | err = drm_mode_connector_attach_encoder(connector, encoder); |
340 | if (err) { | |
341 | DRM_ERROR("failed to attach a connector to a encoder\n"); | |
342 | goto err_sysfs; | |
343 | } | |
344 | ||
345 | DRM_DEBUG_KMS("connector has been created\n"); | |
346 | ||
347 | return connector; | |
348 | ||
349 | err_sysfs: | |
350 | drm_sysfs_connector_remove(connector); | |
351 | err_connector: | |
352 | drm_connector_cleanup(connector); | |
353 | kfree(exynos_connector); | |
354 | return NULL; | |
355 | } |