blob: e77427d81eb97a64e46d8e44c2e41f1df358083f [file] [log] [blame]
Rob Clarkcd5351f2011-11-12 12:09:40 -06001/*
Andrew F. Davisbb5cdf82017-12-05 14:29:31 -06002 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
Rob Clarkcd5351f2011-11-12 12:09:40 -06003 * Author: Rob Clark <rob@ti.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
Laurent Pinchart69a12262015-03-05 21:38:16 +020018#include <drm/drm_atomic_helper.h>
Laurent Pinchart2d278f52015-03-05 21:31:37 +020019#include <drm/drm_crtc.h>
20#include <drm/drm_crtc_helper.h>
Rob Clarkcd5351f2011-11-12 12:09:40 -060021
Laurent Pinchart2d278f52015-03-05 21:31:37 +020022#include "omap_drv.h"
Rob Clarkcd5351f2011-11-12 12:09:40 -060023
24/*
25 * connector funcs
26 */
27
28#define to_omap_connector(x) container_of(x, struct omap_connector, base)
29
30struct omap_connector {
31 struct drm_connector base;
32 struct omap_dss_device *dssdev;
Laurent Pinchart18412b62018-05-30 21:46:44 +030033 struct omap_dss_device *hpd;
Tomi Valkeinen4f930c02014-06-18 14:19:48 +030034 bool hdmi_mode;
Rob Clarkcd5351f2011-11-12 12:09:40 -060035};
36
Peter Ujfalusi3c596802017-06-02 15:26:35 +030037static void omap_connector_hpd_cb(void *cb_data,
38 enum drm_connector_status status)
39{
40 struct omap_connector *omap_connector = cb_data;
41 struct drm_connector *connector = &omap_connector->base;
42 struct drm_device *dev = connector->dev;
43 enum drm_connector_status old_status;
44
45 mutex_lock(&dev->mode_config.mutex);
46 old_status = connector->status;
47 connector->status = status;
48 mutex_unlock(&dev->mode_config.mutex);
49
50 if (old_status != status)
51 drm_kms_helper_hotplug_event(dev);
52}
53
Laurent Pinchart18412b62018-05-30 21:46:44 +030054void omap_connector_enable_hpd(struct drm_connector *connector)
55{
56 struct omap_connector *omap_connector = to_omap_connector(connector);
57 struct omap_dss_device *hpd = omap_connector->hpd;
58
59 if (hpd)
60 hpd->ops->register_hpd_cb(hpd, omap_connector_hpd_cb,
61 omap_connector);
62}
63
64void omap_connector_disable_hpd(struct drm_connector *connector)
65{
66 struct omap_connector *omap_connector = to_omap_connector(connector);
67 struct omap_dss_device *hpd = omap_connector->hpd;
68
69 if (hpd)
70 hpd->ops->unregister_hpd_cb(hpd);
71}
72
Tomi Valkeinen4f930c02014-06-18 14:19:48 +030073bool omap_connector_get_hdmi_mode(struct drm_connector *connector)
74{
75 struct omap_connector *omap_connector = to_omap_connector(connector);
76
77 return omap_connector->hdmi_mode;
78}
79
Laurent Pinchart949ea2e2018-05-30 18:49:48 +030080static struct omap_dss_device *
81omap_connector_find_device(struct drm_connector *connector,
82 enum omap_dss_device_ops_flag op)
83{
84 struct omap_connector *omap_connector = to_omap_connector(connector);
85 struct omap_dss_device *dssdev;
86
87 for (dssdev = omap_connector->dssdev; dssdev; dssdev = dssdev->src) {
88 if (dssdev->ops_flags & op)
89 return dssdev;
90 }
91
92 return NULL;
93}
94
Rob Clarkf5f94542012-12-04 13:59:12 -060095static enum drm_connector_status omap_connector_detect(
Rob Clarkcd5351f2011-11-12 12:09:40 -060096 struct drm_connector *connector, bool force)
97{
98 struct omap_connector *omap_connector = to_omap_connector(connector);
Laurent Pinchartf2ea5572018-05-28 16:49:36 +030099 struct omap_dss_device *dssdev;
100 enum drm_connector_status status;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600101
Laurent Pinchart949ea2e2018-05-30 18:49:48 +0300102 dssdev = omap_connector_find_device(connector,
103 OMAP_DSS_DEVICE_OP_DETECT);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600104
Laurent Pinchartf2ea5572018-05-28 16:49:36 +0300105 if (dssdev) {
106 if (dssdev->ops->detect(dssdev))
107 status = connector_status_connected;
108 else
109 status = connector_status_disconnected;
110 } else {
111 switch (omap_connector->dssdev->type) {
112 case OMAP_DISPLAY_TYPE_DPI:
113 case OMAP_DISPLAY_TYPE_DBI:
114 case OMAP_DISPLAY_TYPE_SDI:
115 case OMAP_DISPLAY_TYPE_DSI:
116 status = connector_status_connected;
117 break;
118 default:
119 status = connector_status_unknown;
120 break;
121 }
122 }
Rob Clarkcd5351f2011-11-12 12:09:40 -0600123
Laurent Pinchartf2ea5572018-05-28 16:49:36 +0300124 VERB("%s: %d (force=%d)", omap_connector->dssdev->name, status, force);
125
126 return status;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600127}
128
129static void omap_connector_destroy(struct drm_connector *connector)
130{
131 struct omap_connector *omap_connector = to_omap_connector(connector);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600132
Rob Clarkcd5351f2011-11-12 12:09:40 -0600133 DBG("%s", omap_connector->dssdev->name);
Laurent Pinchart949ea2e2018-05-30 18:49:48 +0300134
Laurent Pinchart18412b62018-05-30 21:46:44 +0300135 if (omap_connector->hpd) {
136 struct omap_dss_device *hpd = omap_connector->hpd;
137
138 hpd->ops->unregister_hpd_cb(hpd);
139 omapdss_device_put(hpd);
140 omap_connector->hpd = NULL;
Peter Ujfalusi3c596802017-06-02 15:26:35 +0300141 }
Laurent Pinchart949ea2e2018-05-30 18:49:48 +0300142
Thomas Wood34ea3d32014-05-29 16:57:41 +0100143 drm_connector_unregister(connector);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600144 drm_connector_cleanup(connector);
145 kfree(omap_connector);
146
Laurent Pinchart949ea2e2018-05-30 18:49:48 +0300147 omapdss_device_put(omap_connector->dssdev);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600148}
149
150#define MAX_EDID 512
151
152static int omap_connector_get_modes(struct drm_connector *connector)
153{
154 struct omap_connector *omap_connector = to_omap_connector(connector);
155 struct omap_dss_device *dssdev = omap_connector->dssdev;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600156 struct drm_device *dev = connector->dev;
157 int n = 0;
158
159 DBG("%s", omap_connector->dssdev->name);
160
161 /* if display exposes EDID, then we parse that in the normal way to
162 * build table of supported modes.. otherwise (ie. fixed resolution
163 * LCD panels) we just return a single mode corresponding to the
164 * currently configured timings:
165 */
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300166 if (dssdev->ops->read_edid) {
Rob Clarkcd5351f2011-11-12 12:09:40 -0600167 void *edid = kzalloc(MAX_EDID, GFP_KERNEL);
168
Tomi Valkeinen47aaaec2018-05-02 12:11:59 +0300169 if (!edid)
170 return 0;
171
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300172 if ((dssdev->ops->read_edid(dssdev, edid, MAX_EDID) > 0) &&
Rob Clarkcd5351f2011-11-12 12:09:40 -0600173 drm_edid_is_valid(edid)) {
Daniel Vetterc555f022018-07-09 10:40:06 +0200174 drm_connector_update_edid_property(
Rob Clarkcd5351f2011-11-12 12:09:40 -0600175 connector, edid);
176 n = drm_add_edid_modes(connector, edid);
Tomi Valkeinen4f930c02014-06-18 14:19:48 +0300177
178 omap_connector->hdmi_mode =
179 drm_detect_hdmi_monitor(edid);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600180 } else {
Daniel Vetterc555f022018-07-09 10:40:06 +0200181 drm_connector_update_edid_property(
Rob Clarkcd5351f2011-11-12 12:09:40 -0600182 connector, NULL);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600183 }
Tomi Valkeinen4f930c02014-06-18 14:19:48 +0300184
Jani Nikula451023d2012-08-15 09:32:39 +0000185 kfree(edid);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600186 } else {
187 struct drm_display_mode *mode = drm_mode_create(dev);
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300188 struct videomode vm = {0};
Rob Clarkcd5351f2011-11-12 12:09:40 -0600189
Tomi Valkeinen47aaaec2018-05-02 12:11:59 +0300190 if (!mode)
191 return 0;
192
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300193 dssdev->ops->get_timings(dssdev, &vm);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600194
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300195 drm_display_mode_from_videomode(&vm, mode);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600196
197 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
198 drm_mode_set_name(mode);
199 drm_mode_probed_add(connector, mode);
200
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300201 if (dssdev->driver && dssdev->driver->get_size) {
202 dssdev->driver->get_size(dssdev,
Sebastian Reichelb070d6e2017-07-24 19:33:04 +0200203 &connector->display_info.width_mm,
204 &connector->display_info.height_mm);
205 }
206
Rob Clarkcd5351f2011-11-12 12:09:40 -0600207 n = 1;
208 }
209
210 return n;
211}
212
213static int omap_connector_mode_valid(struct drm_connector *connector,
214 struct drm_display_mode *mode)
215{
216 struct omap_connector *omap_connector = to_omap_connector(connector);
217 struct omap_dss_device *dssdev = omap_connector->dssdev;
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300218 struct videomode vm = {0};
Rob Clarkcd5351f2011-11-12 12:09:40 -0600219 struct drm_device *dev = connector->dev;
220 struct drm_display_mode *new_mode;
Archit Tanejabddabbe2013-03-26 19:15:20 +0530221 int r, ret = MODE_BAD;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600222
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300223 drm_display_mode_to_videomode(mode, &vm);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600224 mode->vrefresh = drm_mode_vrefresh(mode);
225
Archit Tanejabddabbe2013-03-26 19:15:20 +0530226 /*
227 * if the panel driver doesn't have a check_timings, it's most likely
228 * a fixed resolution panel, check if the timings match with the
229 * panel's timings
230 */
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300231 if (dssdev->ops->check_timings) {
232 r = dssdev->ops->check_timings(dssdev, &vm);
Archit Tanejabddabbe2013-03-26 19:15:20 +0530233 } else {
Peter Ujfalusi4520ff22016-09-22 14:07:03 +0300234 struct videomode t = {0};
Archit Tanejabddabbe2013-03-26 19:15:20 +0530235
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300236 dssdev->ops->get_timings(dssdev, &t);
Archit Tanejabddabbe2013-03-26 19:15:20 +0530237
Tomi Valkeinen50fa9f02016-11-23 13:24:00 +0200238 /*
239 * Ignore the flags, as we don't get them from
240 * drm_display_mode_to_videomode.
241 */
242 t.flags = 0;
243
Laurent Pinchartd501b122016-12-12 11:57:24 +0200244 if (memcmp(&vm, &t, sizeof(vm)))
Archit Tanejabddabbe2013-03-26 19:15:20 +0530245 r = -EINVAL;
246 else
247 r = 0;
248 }
249
250 if (!r) {
Rob Clarkcd5351f2011-11-12 12:09:40 -0600251 /* check if vrefresh is still valid */
252 new_mode = drm_mode_duplicate(dev, mode);
Tomi Valkeinen47aaaec2018-05-02 12:11:59 +0300253
254 if (!new_mode)
255 return MODE_BAD;
256
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300257 new_mode->clock = vm.pixelclock / 1000;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600258 new_mode->vrefresh = 0;
259 if (mode->vrefresh == drm_mode_vrefresh(new_mode))
260 ret = MODE_OK;
261 drm_mode_destroy(dev, new_mode);
262 }
263
264 DBG("connector: mode %s: "
265 "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
266 (ret == MODE_OK) ? "valid" : "invalid",
267 mode->base.id, mode->name, mode->vrefresh, mode->clock,
268 mode->hdisplay, mode->hsync_start,
269 mode->hsync_end, mode->htotal,
270 mode->vdisplay, mode->vsync_start,
271 mode->vsync_end, mode->vtotal, mode->type, mode->flags);
272
273 return ret;
274}
275
Rob Clarkcd5351f2011-11-12 12:09:40 -0600276static const struct drm_connector_funcs omap_connector_funcs = {
Laurent Pinchart69a12262015-03-05 21:38:16 +0200277 .reset = drm_atomic_helper_connector_reset,
Rob Clarkcd5351f2011-11-12 12:09:40 -0600278 .detect = omap_connector_detect,
279 .fill_modes = drm_helper_probe_single_connector_modes,
280 .destroy = omap_connector_destroy,
Laurent Pinchart69a12262015-03-05 21:38:16 +0200281 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
282 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
Rob Clarkcd5351f2011-11-12 12:09:40 -0600283};
284
285static const struct drm_connector_helper_funcs omap_connector_helper_funcs = {
286 .get_modes = omap_connector_get_modes,
287 .mode_valid = omap_connector_mode_valid,
Rob Clarkcd5351f2011-11-12 12:09:40 -0600288};
289
Rob Clarkcd5351f2011-11-12 12:09:40 -0600290/* initialize connector */
291struct drm_connector *omap_connector_init(struct drm_device *dev,
Rob Clarkf5f94542012-12-04 13:59:12 -0600292 int connector_type, struct omap_dss_device *dssdev,
293 struct drm_encoder *encoder)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600294{
295 struct drm_connector *connector = NULL;
296 struct omap_connector *omap_connector;
297
298 DBG("%s", dssdev->name);
299
Laurent Pinchartd501b122016-12-12 11:57:24 +0200300 omap_connector = kzalloc(sizeof(*omap_connector), GFP_KERNEL);
Joe Perches78110bb2013-02-11 09:41:29 -0800301 if (!omap_connector)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600302 goto fail;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600303
Laurent Pinchart949ea2e2018-05-30 18:49:48 +0300304 omap_connector->dssdev = omapdss_device_get(dssdev);
Rob Clarkf5f94542012-12-04 13:59:12 -0600305
Rob Clarkcd5351f2011-11-12 12:09:40 -0600306 connector = &omap_connector->base;
Laurent Pinchart949ea2e2018-05-30 18:49:48 +0300307 connector->interlace_allowed = 1;
308 connector->doublescan_allowed = 0;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600309
310 drm_connector_init(dev, connector, &omap_connector_funcs,
311 connector_type);
312 drm_connector_helper_add(connector, &omap_connector_helper_funcs);
313
Laurent Pinchart949ea2e2018-05-30 18:49:48 +0300314 /*
315 * Initialize connector status handling. First try to find a device that
316 * supports hot-plug reporting. If it fails, fall back to a device that
317 * support polling. If that fails too, we don't support hot-plug
318 * detection at all.
319 */
320 dssdev = omap_connector_find_device(connector, OMAP_DSS_DEVICE_OP_HPD);
321 if (dssdev) {
Laurent Pinchart18412b62018-05-30 21:46:44 +0300322 omap_connector->hpd = omapdss_device_get(dssdev);
Laurent Pincharta21a8f32018-05-30 18:51:59 +0300323 connector->polled = DRM_CONNECTOR_POLL_HPD;
324 } else {
Laurent Pinchart949ea2e2018-05-30 18:49:48 +0300325 dssdev = omap_connector_find_device(connector,
326 OMAP_DSS_DEVICE_OP_DETECT);
327 if (dssdev)
328 connector->polled = DRM_CONNECTOR_POLL_CONNECT |
329 DRM_CONNECTOR_POLL_DISCONNECT;
330 }
Rob Clarkcd5351f2011-11-12 12:09:40 -0600331
Rob Clarkcd5351f2011-11-12 12:09:40 -0600332 return connector;
333
334fail:
YAMANE Toshiakifdbf20b2012-11-14 19:28:54 +0900335 if (connector)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600336 omap_connector_destroy(connector);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600337
338 return NULL;
339}