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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;
Tomi Valkeinen4f930c02014-06-18 14:19:48 +030033 bool hdmi_mode;
Rob Clarkcd5351f2011-11-12 12:09:40 -060034};
35
Peter Ujfalusi3c596802017-06-02 15:26:35 +030036static void omap_connector_hpd_cb(void *cb_data,
37 enum drm_connector_status status)
38{
39 struct omap_connector *omap_connector = cb_data;
40 struct drm_connector *connector = &omap_connector->base;
41 struct drm_device *dev = connector->dev;
42 enum drm_connector_status old_status;
43
44 mutex_lock(&dev->mode_config.mutex);
45 old_status = connector->status;
46 connector->status = status;
47 mutex_unlock(&dev->mode_config.mutex);
48
49 if (old_status != status)
50 drm_kms_helper_hotplug_event(dev);
51}
52
Tomi Valkeinen4f930c02014-06-18 14:19:48 +030053bool omap_connector_get_hdmi_mode(struct drm_connector *connector)
54{
55 struct omap_connector *omap_connector = to_omap_connector(connector);
56
57 return omap_connector->hdmi_mode;
58}
59
Rob Clarkf5f94542012-12-04 13:59:12 -060060static enum drm_connector_status omap_connector_detect(
Rob Clarkcd5351f2011-11-12 12:09:40 -060061 struct drm_connector *connector, bool force)
62{
63 struct omap_connector *omap_connector = to_omap_connector(connector);
64 struct omap_dss_device *dssdev = omap_connector->dssdev;
Rob Clarkcd5351f2011-11-12 12:09:40 -060065 enum drm_connector_status ret;
66
Laurent Pinchart83910ad2018-06-01 19:45:01 +030067 if (dssdev->ops->detect) {
68 if (dssdev->ops->detect(dssdev))
Rob Clarkcd5351f2011-11-12 12:09:40 -060069 ret = connector_status_connected;
YAMANE Toshiakifdbf20b2012-11-14 19:28:54 +090070 else
Rob Clarkcd5351f2011-11-12 12:09:40 -060071 ret = connector_status_disconnected;
Archit Tanejabddabbe2013-03-26 19:15:20 +053072 } else if (dssdev->type == OMAP_DISPLAY_TYPE_DPI ||
73 dssdev->type == OMAP_DISPLAY_TYPE_DBI ||
74 dssdev->type == OMAP_DISPLAY_TYPE_SDI ||
75 dssdev->type == OMAP_DISPLAY_TYPE_DSI) {
76 ret = connector_status_connected;
Rob Clarkcd5351f2011-11-12 12:09:40 -060077 } else {
78 ret = connector_status_unknown;
79 }
80
81 VERB("%s: %d (force=%d)", omap_connector->dssdev->name, ret, force);
82
83 return ret;
84}
85
86static void omap_connector_destroy(struct drm_connector *connector)
87{
88 struct omap_connector *omap_connector = to_omap_connector(connector);
89 struct omap_dss_device *dssdev = omap_connector->dssdev;
90
Rob Clarkcd5351f2011-11-12 12:09:40 -060091 DBG("%s", omap_connector->dssdev->name);
Peter Ujfalusi3c596802017-06-02 15:26:35 +030092 if (connector->polled == DRM_CONNECTOR_POLL_HPD &&
Laurent Pinchart83910ad2018-06-01 19:45:01 +030093 dssdev->ops->unregister_hpd_cb) {
94 dssdev->ops->unregister_hpd_cb(dssdev);
Peter Ujfalusi3c596802017-06-02 15:26:35 +030095 }
Thomas Wood34ea3d32014-05-29 16:57:41 +010096 drm_connector_unregister(connector);
Rob Clarkcd5351f2011-11-12 12:09:40 -060097 drm_connector_cleanup(connector);
98 kfree(omap_connector);
99
Laurent Pinchartc1dfe722018-03-02 02:43:45 +0200100 omapdss_device_put(dssdev);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600101}
102
103#define MAX_EDID 512
104
105static int omap_connector_get_modes(struct drm_connector *connector)
106{
107 struct omap_connector *omap_connector = to_omap_connector(connector);
108 struct omap_dss_device *dssdev = omap_connector->dssdev;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600109 struct drm_device *dev = connector->dev;
110 int n = 0;
111
112 DBG("%s", omap_connector->dssdev->name);
113
114 /* if display exposes EDID, then we parse that in the normal way to
115 * build table of supported modes.. otherwise (ie. fixed resolution
116 * LCD panels) we just return a single mode corresponding to the
117 * currently configured timings:
118 */
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300119 if (dssdev->ops->read_edid) {
Rob Clarkcd5351f2011-11-12 12:09:40 -0600120 void *edid = kzalloc(MAX_EDID, GFP_KERNEL);
121
Tomi Valkeinen47aaaec2018-05-02 12:11:59 +0300122 if (!edid)
123 return 0;
124
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300125 if ((dssdev->ops->read_edid(dssdev, edid, MAX_EDID) > 0) &&
Rob Clarkcd5351f2011-11-12 12:09:40 -0600126 drm_edid_is_valid(edid)) {
Daniel Vetterc555f022018-07-09 10:40:06 +0200127 drm_connector_update_edid_property(
Rob Clarkcd5351f2011-11-12 12:09:40 -0600128 connector, edid);
129 n = drm_add_edid_modes(connector, edid);
Tomi Valkeinen4f930c02014-06-18 14:19:48 +0300130
131 omap_connector->hdmi_mode =
132 drm_detect_hdmi_monitor(edid);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600133 } else {
Daniel Vetterc555f022018-07-09 10:40:06 +0200134 drm_connector_update_edid_property(
Rob Clarkcd5351f2011-11-12 12:09:40 -0600135 connector, NULL);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600136 }
Tomi Valkeinen4f930c02014-06-18 14:19:48 +0300137
Jani Nikula451023d2012-08-15 09:32:39 +0000138 kfree(edid);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600139 } else {
140 struct drm_display_mode *mode = drm_mode_create(dev);
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300141 struct videomode vm = {0};
Rob Clarkcd5351f2011-11-12 12:09:40 -0600142
Tomi Valkeinen47aaaec2018-05-02 12:11:59 +0300143 if (!mode)
144 return 0;
145
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300146 dssdev->ops->get_timings(dssdev, &vm);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600147
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300148 drm_display_mode_from_videomode(&vm, mode);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600149
150 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
151 drm_mode_set_name(mode);
152 drm_mode_probed_add(connector, mode);
153
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300154 if (dssdev->driver && dssdev->driver->get_size) {
155 dssdev->driver->get_size(dssdev,
Sebastian Reichelb070d6e2017-07-24 19:33:04 +0200156 &connector->display_info.width_mm,
157 &connector->display_info.height_mm);
158 }
159
Rob Clarkcd5351f2011-11-12 12:09:40 -0600160 n = 1;
161 }
162
163 return n;
164}
165
166static int omap_connector_mode_valid(struct drm_connector *connector,
167 struct drm_display_mode *mode)
168{
169 struct omap_connector *omap_connector = to_omap_connector(connector);
170 struct omap_dss_device *dssdev = omap_connector->dssdev;
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300171 struct videomode vm = {0};
Rob Clarkcd5351f2011-11-12 12:09:40 -0600172 struct drm_device *dev = connector->dev;
173 struct drm_display_mode *new_mode;
Archit Tanejabddabbe2013-03-26 19:15:20 +0530174 int r, ret = MODE_BAD;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600175
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300176 drm_display_mode_to_videomode(mode, &vm);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600177 mode->vrefresh = drm_mode_vrefresh(mode);
178
Archit Tanejabddabbe2013-03-26 19:15:20 +0530179 /*
180 * if the panel driver doesn't have a check_timings, it's most likely
181 * a fixed resolution panel, check if the timings match with the
182 * panel's timings
183 */
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300184 if (dssdev->ops->check_timings) {
185 r = dssdev->ops->check_timings(dssdev, &vm);
Archit Tanejabddabbe2013-03-26 19:15:20 +0530186 } else {
Peter Ujfalusi4520ff22016-09-22 14:07:03 +0300187 struct videomode t = {0};
Archit Tanejabddabbe2013-03-26 19:15:20 +0530188
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300189 dssdev->ops->get_timings(dssdev, &t);
Archit Tanejabddabbe2013-03-26 19:15:20 +0530190
Tomi Valkeinen50fa9f02016-11-23 13:24:00 +0200191 /*
192 * Ignore the flags, as we don't get them from
193 * drm_display_mode_to_videomode.
194 */
195 t.flags = 0;
196
Laurent Pinchartd501b122016-12-12 11:57:24 +0200197 if (memcmp(&vm, &t, sizeof(vm)))
Archit Tanejabddabbe2013-03-26 19:15:20 +0530198 r = -EINVAL;
199 else
200 r = 0;
201 }
202
203 if (!r) {
Rob Clarkcd5351f2011-11-12 12:09:40 -0600204 /* check if vrefresh is still valid */
205 new_mode = drm_mode_duplicate(dev, mode);
Tomi Valkeinen47aaaec2018-05-02 12:11:59 +0300206
207 if (!new_mode)
208 return MODE_BAD;
209
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300210 new_mode->clock = vm.pixelclock / 1000;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600211 new_mode->vrefresh = 0;
212 if (mode->vrefresh == drm_mode_vrefresh(new_mode))
213 ret = MODE_OK;
214 drm_mode_destroy(dev, new_mode);
215 }
216
217 DBG("connector: mode %s: "
218 "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
219 (ret == MODE_OK) ? "valid" : "invalid",
220 mode->base.id, mode->name, mode->vrefresh, mode->clock,
221 mode->hdisplay, mode->hsync_start,
222 mode->hsync_end, mode->htotal,
223 mode->vdisplay, mode->vsync_start,
224 mode->vsync_end, mode->vtotal, mode->type, mode->flags);
225
226 return ret;
227}
228
Rob Clarkcd5351f2011-11-12 12:09:40 -0600229static const struct drm_connector_funcs omap_connector_funcs = {
Laurent Pinchart69a12262015-03-05 21:38:16 +0200230 .reset = drm_atomic_helper_connector_reset,
Rob Clarkcd5351f2011-11-12 12:09:40 -0600231 .detect = omap_connector_detect,
232 .fill_modes = drm_helper_probe_single_connector_modes,
233 .destroy = omap_connector_destroy,
Laurent Pinchart69a12262015-03-05 21:38:16 +0200234 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
235 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
Rob Clarkcd5351f2011-11-12 12:09:40 -0600236};
237
238static const struct drm_connector_helper_funcs omap_connector_helper_funcs = {
239 .get_modes = omap_connector_get_modes,
240 .mode_valid = omap_connector_mode_valid,
Rob Clarkcd5351f2011-11-12 12:09:40 -0600241};
242
Rob Clarkcd5351f2011-11-12 12:09:40 -0600243/* initialize connector */
244struct drm_connector *omap_connector_init(struct drm_device *dev,
Rob Clarkf5f94542012-12-04 13:59:12 -0600245 int connector_type, struct omap_dss_device *dssdev,
246 struct drm_encoder *encoder)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600247{
248 struct drm_connector *connector = NULL;
249 struct omap_connector *omap_connector;
Peter Ujfalusi3c596802017-06-02 15:26:35 +0300250 bool hpd_supported = false;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600251
252 DBG("%s", dssdev->name);
253
Laurent Pinchartc1dfe722018-03-02 02:43:45 +0200254 omapdss_device_get(dssdev);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600255
Laurent Pinchartd501b122016-12-12 11:57:24 +0200256 omap_connector = kzalloc(sizeof(*omap_connector), GFP_KERNEL);
Joe Perches78110bb2013-02-11 09:41:29 -0800257 if (!omap_connector)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600258 goto fail;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600259
260 omap_connector->dssdev = dssdev;
Rob Clarkf5f94542012-12-04 13:59:12 -0600261
Rob Clarkcd5351f2011-11-12 12:09:40 -0600262 connector = &omap_connector->base;
263
264 drm_connector_init(dev, connector, &omap_connector_funcs,
265 connector_type);
266 drm_connector_helper_add(connector, &omap_connector_helper_funcs);
267
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300268 if (dssdev->ops->register_hpd_cb) {
269 int ret = dssdev->ops->register_hpd_cb(dssdev,
270 omap_connector_hpd_cb,
271 omap_connector);
Peter Ujfalusi3c596802017-06-02 15:26:35 +0300272 if (!ret)
273 hpd_supported = true;
274 else if (ret != -ENOTSUPP)
275 DBG("%s: Failed to register HPD callback (%d).",
276 dssdev->name, ret);
277 }
278
279 if (hpd_supported)
280 connector->polled = DRM_CONNECTOR_POLL_HPD;
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300281 else if (dssdev->ops->detect)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600282 connector->polled = DRM_CONNECTOR_POLL_CONNECT |
Peter Ujfalusi4573ebe2016-08-22 15:54:30 +0300283 DRM_CONNECTOR_POLL_DISCONNECT;
284 else
285 connector->polled = 0;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600286
287 connector->interlace_allowed = 1;
288 connector->doublescan_allowed = 0;
289
Rob Clarkcd5351f2011-11-12 12:09:40 -0600290 return connector;
291
292fail:
YAMANE Toshiakifdbf20b2012-11-14 19:28:54 +0900293 if (connector)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600294 omap_connector_destroy(connector);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600295
296 return NULL;
297}