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cd5351f4 | 1 | /* |
8bb0daff | 2 | * drivers/gpu/drm/omapdrm/omap_connector.c |
cd5351f4 RC |
3 | * |
4 | * Copyright (C) 2011 Texas Instruments | |
5 | * Author: Rob Clark <rob@ti.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License version 2 as published by | |
9 | * the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along with | |
17 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "omap_drv.h" | |
21 | ||
22 | #include "drm_crtc.h" | |
23 | #include "drm_crtc_helper.h" | |
24 | ||
25 | /* | |
26 | * connector funcs | |
27 | */ | |
28 | ||
29 | #define to_omap_connector(x) container_of(x, struct omap_connector, base) | |
30 | ||
31 | struct omap_connector { | |
32 | struct drm_connector base; | |
33 | struct omap_dss_device *dssdev; | |
f5f9454c | 34 | struct drm_encoder *encoder; |
cd5351f4 RC |
35 | }; |
36 | ||
f5f9454c | 37 | void copy_timings_omap_to_drm(struct drm_display_mode *mode, |
cd5351f4 RC |
38 | struct omap_video_timings *timings) |
39 | { | |
d8d78941 | 40 | mode->clock = timings->pixelclock / 1000; |
cd5351f4 RC |
41 | |
42 | mode->hdisplay = timings->x_res; | |
43 | mode->hsync_start = mode->hdisplay + timings->hfp; | |
44 | mode->hsync_end = mode->hsync_start + timings->hsw; | |
45 | mode->htotal = mode->hsync_end + timings->hbp; | |
46 | ||
47 | mode->vdisplay = timings->y_res; | |
48 | mode->vsync_start = mode->vdisplay + timings->vfp; | |
49 | mode->vsync_end = mode->vsync_start + timings->vsw; | |
50 | mode->vtotal = mode->vsync_end + timings->vbp; | |
51 | ||
0b0d7b62 RC |
52 | mode->flags = 0; |
53 | ||
54 | if (timings->interlace) | |
55 | mode->flags |= DRM_MODE_FLAG_INTERLACE; | |
94254edc RC |
56 | |
57 | if (timings->hsync_level == OMAPDSS_SIG_ACTIVE_HIGH) | |
58 | mode->flags |= DRM_MODE_FLAG_PHSYNC; | |
59 | else | |
60 | mode->flags |= DRM_MODE_FLAG_NHSYNC; | |
61 | ||
62 | if (timings->vsync_level == OMAPDSS_SIG_ACTIVE_HIGH) | |
63 | mode->flags |= DRM_MODE_FLAG_PVSYNC; | |
64 | else | |
65 | mode->flags |= DRM_MODE_FLAG_NVSYNC; | |
cd5351f4 RC |
66 | } |
67 | ||
f5f9454c | 68 | void copy_timings_drm_to_omap(struct omap_video_timings *timings, |
cd5351f4 RC |
69 | struct drm_display_mode *mode) |
70 | { | |
d8d78941 | 71 | timings->pixelclock = mode->clock * 1000; |
cd5351f4 RC |
72 | |
73 | timings->x_res = mode->hdisplay; | |
74 | timings->hfp = mode->hsync_start - mode->hdisplay; | |
75 | timings->hsw = mode->hsync_end - mode->hsync_start; | |
76 | timings->hbp = mode->htotal - mode->hsync_end; | |
77 | ||
78 | timings->y_res = mode->vdisplay; | |
79 | timings->vfp = mode->vsync_start - mode->vdisplay; | |
80 | timings->vsw = mode->vsync_end - mode->vsync_start; | |
81 | timings->vbp = mode->vtotal - mode->vsync_end; | |
0b0d7b62 RC |
82 | |
83 | timings->interlace = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); | |
94254edc RC |
84 | |
85 | if (mode->flags & DRM_MODE_FLAG_PHSYNC) | |
86 | timings->hsync_level = OMAPDSS_SIG_ACTIVE_HIGH; | |
87 | else | |
88 | timings->hsync_level = OMAPDSS_SIG_ACTIVE_LOW; | |
89 | ||
90 | if (mode->flags & DRM_MODE_FLAG_PVSYNC) | |
91 | timings->vsync_level = OMAPDSS_SIG_ACTIVE_HIGH; | |
92 | else | |
93 | timings->vsync_level = OMAPDSS_SIG_ACTIVE_LOW; | |
94 | ||
95 | timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE; | |
96 | timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH; | |
97 | timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES; | |
cd5351f4 RC |
98 | } |
99 | ||
f5f9454c | 100 | static enum drm_connector_status omap_connector_detect( |
cd5351f4 RC |
101 | struct drm_connector *connector, bool force) |
102 | { | |
103 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
104 | struct omap_dss_device *dssdev = omap_connector->dssdev; | |
105 | struct omap_dss_driver *dssdrv = dssdev->driver; | |
106 | enum drm_connector_status ret; | |
107 | ||
108 | if (dssdrv->detect) { | |
fdbf20b3 | 109 | if (dssdrv->detect(dssdev)) |
cd5351f4 | 110 | ret = connector_status_connected; |
fdbf20b3 | 111 | else |
cd5351f4 | 112 | ret = connector_status_disconnected; |
bddabbe1 AT |
113 | } else if (dssdev->type == OMAP_DISPLAY_TYPE_DPI || |
114 | dssdev->type == OMAP_DISPLAY_TYPE_DBI || | |
115 | dssdev->type == OMAP_DISPLAY_TYPE_SDI || | |
116 | dssdev->type == OMAP_DISPLAY_TYPE_DSI) { | |
117 | ret = connector_status_connected; | |
cd5351f4 RC |
118 | } else { |
119 | ret = connector_status_unknown; | |
120 | } | |
121 | ||
122 | VERB("%s: %d (force=%d)", omap_connector->dssdev->name, ret, force); | |
123 | ||
124 | return ret; | |
125 | } | |
126 | ||
127 | static void omap_connector_destroy(struct drm_connector *connector) | |
128 | { | |
129 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
130 | struct omap_dss_device *dssdev = omap_connector->dssdev; | |
131 | ||
cd5351f4 RC |
132 | DBG("%s", omap_connector->dssdev->name); |
133 | drm_sysfs_connector_remove(connector); | |
134 | drm_connector_cleanup(connector); | |
135 | kfree(omap_connector); | |
136 | ||
137 | omap_dss_put_device(dssdev); | |
138 | } | |
139 | ||
140 | #define MAX_EDID 512 | |
141 | ||
142 | static int omap_connector_get_modes(struct drm_connector *connector) | |
143 | { | |
144 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
145 | struct omap_dss_device *dssdev = omap_connector->dssdev; | |
146 | struct omap_dss_driver *dssdrv = dssdev->driver; | |
147 | struct drm_device *dev = connector->dev; | |
148 | int n = 0; | |
149 | ||
150 | DBG("%s", omap_connector->dssdev->name); | |
151 | ||
152 | /* if display exposes EDID, then we parse that in the normal way to | |
153 | * build table of supported modes.. otherwise (ie. fixed resolution | |
154 | * LCD panels) we just return a single mode corresponding to the | |
155 | * currently configured timings: | |
156 | */ | |
157 | if (dssdrv->read_edid) { | |
158 | void *edid = kzalloc(MAX_EDID, GFP_KERNEL); | |
159 | ||
160 | if ((dssdrv->read_edid(dssdev, edid, MAX_EDID) > 0) && | |
161 | drm_edid_is_valid(edid)) { | |
162 | drm_mode_connector_update_edid_property( | |
163 | connector, edid); | |
164 | n = drm_add_edid_modes(connector, edid); | |
cd5351f4 RC |
165 | } else { |
166 | drm_mode_connector_update_edid_property( | |
167 | connector, NULL); | |
cd5351f4 | 168 | } |
451023dc | 169 | kfree(edid); |
cd5351f4 RC |
170 | } else { |
171 | struct drm_display_mode *mode = drm_mode_create(dev); | |
0b0d7b62 | 172 | struct omap_video_timings timings = {0}; |
cd5351f4 RC |
173 | |
174 | dssdrv->get_timings(dssdev, &timings); | |
175 | ||
176 | copy_timings_omap_to_drm(mode, &timings); | |
177 | ||
178 | mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; | |
179 | drm_mode_set_name(mode); | |
180 | drm_mode_probed_add(connector, mode); | |
181 | ||
182 | n = 1; | |
183 | } | |
184 | ||
185 | return n; | |
186 | } | |
187 | ||
188 | static int omap_connector_mode_valid(struct drm_connector *connector, | |
189 | struct drm_display_mode *mode) | |
190 | { | |
191 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
192 | struct omap_dss_device *dssdev = omap_connector->dssdev; | |
193 | struct omap_dss_driver *dssdrv = dssdev->driver; | |
194 | struct omap_video_timings timings = {0}; | |
195 | struct drm_device *dev = connector->dev; | |
196 | struct drm_display_mode *new_mode; | |
bddabbe1 | 197 | int r, ret = MODE_BAD; |
cd5351f4 RC |
198 | |
199 | copy_timings_drm_to_omap(&timings, mode); | |
200 | mode->vrefresh = drm_mode_vrefresh(mode); | |
201 | ||
bddabbe1 AT |
202 | /* |
203 | * if the panel driver doesn't have a check_timings, it's most likely | |
204 | * a fixed resolution panel, check if the timings match with the | |
205 | * panel's timings | |
206 | */ | |
207 | if (dssdrv->check_timings) { | |
208 | r = dssdrv->check_timings(dssdev, &timings); | |
209 | } else { | |
210 | struct omap_video_timings t = {0}; | |
211 | ||
212 | dssdrv->get_timings(dssdev, &t); | |
213 | ||
214 | if (memcmp(&timings, &t, sizeof(struct omap_video_timings))) | |
215 | r = -EINVAL; | |
216 | else | |
217 | r = 0; | |
218 | } | |
219 | ||
220 | if (!r) { | |
cd5351f4 RC |
221 | /* check if vrefresh is still valid */ |
222 | new_mode = drm_mode_duplicate(dev, mode); | |
d8d78941 | 223 | new_mode->clock = timings.pixelclock / 1000; |
cd5351f4 RC |
224 | new_mode->vrefresh = 0; |
225 | if (mode->vrefresh == drm_mode_vrefresh(new_mode)) | |
226 | ret = MODE_OK; | |
227 | drm_mode_destroy(dev, new_mode); | |
228 | } | |
229 | ||
230 | DBG("connector: mode %s: " | |
231 | "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", | |
232 | (ret == MODE_OK) ? "valid" : "invalid", | |
233 | mode->base.id, mode->name, mode->vrefresh, mode->clock, | |
234 | mode->hdisplay, mode->hsync_start, | |
235 | mode->hsync_end, mode->htotal, | |
236 | mode->vdisplay, mode->vsync_start, | |
237 | mode->vsync_end, mode->vtotal, mode->type, mode->flags); | |
238 | ||
239 | return ret; | |
240 | } | |
241 | ||
242 | struct drm_encoder *omap_connector_attached_encoder( | |
243 | struct drm_connector *connector) | |
244 | { | |
cd5351f4 | 245 | struct omap_connector *omap_connector = to_omap_connector(connector); |
f5f9454c | 246 | return omap_connector->encoder; |
cd5351f4 RC |
247 | } |
248 | ||
249 | static const struct drm_connector_funcs omap_connector_funcs = { | |
f5f9454c | 250 | .dpms = drm_helper_connector_dpms, |
cd5351f4 RC |
251 | .detect = omap_connector_detect, |
252 | .fill_modes = drm_helper_probe_single_connector_modes, | |
253 | .destroy = omap_connector_destroy, | |
254 | }; | |
255 | ||
256 | static const struct drm_connector_helper_funcs omap_connector_helper_funcs = { | |
257 | .get_modes = omap_connector_get_modes, | |
258 | .mode_valid = omap_connector_mode_valid, | |
259 | .best_encoder = omap_connector_attached_encoder, | |
260 | }; | |
261 | ||
cd5351f4 RC |
262 | /* flush an area of the framebuffer (in case of manual update display that |
263 | * is not automatically flushed) | |
264 | */ | |
265 | void omap_connector_flush(struct drm_connector *connector, | |
266 | int x, int y, int w, int h) | |
267 | { | |
268 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
269 | ||
270 | /* TODO: enable when supported in dss */ | |
271 | VERB("%s: %d,%d, %dx%d", omap_connector->dssdev->name, x, y, w, h); | |
272 | } | |
273 | ||
274 | /* initialize connector */ | |
275 | struct drm_connector *omap_connector_init(struct drm_device *dev, | |
f5f9454c RC |
276 | int connector_type, struct omap_dss_device *dssdev, |
277 | struct drm_encoder *encoder) | |
cd5351f4 RC |
278 | { |
279 | struct drm_connector *connector = NULL; | |
280 | struct omap_connector *omap_connector; | |
281 | ||
282 | DBG("%s", dssdev->name); | |
283 | ||
284 | omap_dss_get_device(dssdev); | |
285 | ||
286 | omap_connector = kzalloc(sizeof(struct omap_connector), GFP_KERNEL); | |
78110bb8 | 287 | if (!omap_connector) |
cd5351f4 | 288 | goto fail; |
cd5351f4 RC |
289 | |
290 | omap_connector->dssdev = dssdev; | |
f5f9454c RC |
291 | omap_connector->encoder = encoder; |
292 | ||
cd5351f4 RC |
293 | connector = &omap_connector->base; |
294 | ||
295 | drm_connector_init(dev, connector, &omap_connector_funcs, | |
296 | connector_type); | |
297 | drm_connector_helper_add(connector, &omap_connector_helper_funcs); | |
298 | ||
299 | #if 0 /* enable when dss2 supports hotplug */ | |
300 | if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_HPD) | |
301 | connector->polled = 0; | |
302 | else | |
303 | #endif | |
304 | connector->polled = DRM_CONNECTOR_POLL_CONNECT | | |
305 | DRM_CONNECTOR_POLL_DISCONNECT; | |
306 | ||
307 | connector->interlace_allowed = 1; | |
308 | connector->doublescan_allowed = 0; | |
309 | ||
310 | drm_sysfs_connector_add(connector); | |
311 | ||
312 | return connector; | |
313 | ||
314 | fail: | |
fdbf20b3 | 315 | if (connector) |
cd5351f4 | 316 | omap_connector_destroy(connector); |
cd5351f4 RC |
317 | |
318 | return NULL; | |
319 | } |