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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);
Laurent Pinchartf2ea5572018-05-28 16:49:36 +030064 struct omap_dss_device *dssdev;
65 enum drm_connector_status status;
Rob Clarkcd5351f2011-11-12 12:09:40 -060066
Laurent Pinchartf2ea5572018-05-28 16:49:36 +030067 for (dssdev = omap_connector->dssdev; dssdev; dssdev = dssdev->src) {
68 if (dssdev->ops_flags & OMAP_DSS_DEVICE_OP_DETECT)
69 break;
Rob Clarkcd5351f2011-11-12 12:09:40 -060070 }
71
Laurent Pinchartf2ea5572018-05-28 16:49:36 +030072 if (dssdev) {
73 if (dssdev->ops->detect(dssdev))
74 status = connector_status_connected;
75 else
76 status = connector_status_disconnected;
77 } else {
78 switch (omap_connector->dssdev->type) {
79 case OMAP_DISPLAY_TYPE_DPI:
80 case OMAP_DISPLAY_TYPE_DBI:
81 case OMAP_DISPLAY_TYPE_SDI:
82 case OMAP_DISPLAY_TYPE_DSI:
83 status = connector_status_connected;
84 break;
85 default:
86 status = connector_status_unknown;
87 break;
88 }
89 }
Rob Clarkcd5351f2011-11-12 12:09:40 -060090
Laurent Pinchartf2ea5572018-05-28 16:49:36 +030091 VERB("%s: %d (force=%d)", omap_connector->dssdev->name, status, force);
92
93 return status;
Rob Clarkcd5351f2011-11-12 12:09:40 -060094}
95
96static void omap_connector_destroy(struct drm_connector *connector)
97{
98 struct omap_connector *omap_connector = to_omap_connector(connector);
99 struct omap_dss_device *dssdev = omap_connector->dssdev;
100
Rob Clarkcd5351f2011-11-12 12:09:40 -0600101 DBG("%s", omap_connector->dssdev->name);
Peter Ujfalusi3c596802017-06-02 15:26:35 +0300102 if (connector->polled == DRM_CONNECTOR_POLL_HPD &&
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300103 dssdev->ops->unregister_hpd_cb) {
104 dssdev->ops->unregister_hpd_cb(dssdev);
Peter Ujfalusi3c596802017-06-02 15:26:35 +0300105 }
Thomas Wood34ea3d32014-05-29 16:57:41 +0100106 drm_connector_unregister(connector);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600107 drm_connector_cleanup(connector);
108 kfree(omap_connector);
109
Laurent Pinchartc1dfe722018-03-02 02:43:45 +0200110 omapdss_device_put(dssdev);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600111}
112
113#define MAX_EDID 512
114
115static int omap_connector_get_modes(struct drm_connector *connector)
116{
117 struct omap_connector *omap_connector = to_omap_connector(connector);
118 struct omap_dss_device *dssdev = omap_connector->dssdev;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600119 struct drm_device *dev = connector->dev;
120 int n = 0;
121
122 DBG("%s", omap_connector->dssdev->name);
123
124 /* if display exposes EDID, then we parse that in the normal way to
125 * build table of supported modes.. otherwise (ie. fixed resolution
126 * LCD panels) we just return a single mode corresponding to the
127 * currently configured timings:
128 */
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300129 if (dssdev->ops->read_edid) {
Rob Clarkcd5351f2011-11-12 12:09:40 -0600130 void *edid = kzalloc(MAX_EDID, GFP_KERNEL);
131
Tomi Valkeinen47aaaec2018-05-02 12:11:59 +0300132 if (!edid)
133 return 0;
134
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300135 if ((dssdev->ops->read_edid(dssdev, edid, MAX_EDID) > 0) &&
Rob Clarkcd5351f2011-11-12 12:09:40 -0600136 drm_edid_is_valid(edid)) {
Daniel Vetterc555f022018-07-09 10:40:06 +0200137 drm_connector_update_edid_property(
Rob Clarkcd5351f2011-11-12 12:09:40 -0600138 connector, edid);
139 n = drm_add_edid_modes(connector, edid);
Tomi Valkeinen4f930c02014-06-18 14:19:48 +0300140
141 omap_connector->hdmi_mode =
142 drm_detect_hdmi_monitor(edid);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600143 } else {
Daniel Vetterc555f022018-07-09 10:40:06 +0200144 drm_connector_update_edid_property(
Rob Clarkcd5351f2011-11-12 12:09:40 -0600145 connector, NULL);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600146 }
Tomi Valkeinen4f930c02014-06-18 14:19:48 +0300147
Jani Nikula451023d2012-08-15 09:32:39 +0000148 kfree(edid);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600149 } else {
150 struct drm_display_mode *mode = drm_mode_create(dev);
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300151 struct videomode vm = {0};
Rob Clarkcd5351f2011-11-12 12:09:40 -0600152
Tomi Valkeinen47aaaec2018-05-02 12:11:59 +0300153 if (!mode)
154 return 0;
155
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300156 dssdev->ops->get_timings(dssdev, &vm);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600157
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300158 drm_display_mode_from_videomode(&vm, mode);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600159
160 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
161 drm_mode_set_name(mode);
162 drm_mode_probed_add(connector, mode);
163
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300164 if (dssdev->driver && dssdev->driver->get_size) {
165 dssdev->driver->get_size(dssdev,
Sebastian Reichelb070d6e2017-07-24 19:33:04 +0200166 &connector->display_info.width_mm,
167 &connector->display_info.height_mm);
168 }
169
Rob Clarkcd5351f2011-11-12 12:09:40 -0600170 n = 1;
171 }
172
173 return n;
174}
175
176static int omap_connector_mode_valid(struct drm_connector *connector,
177 struct drm_display_mode *mode)
178{
179 struct omap_connector *omap_connector = to_omap_connector(connector);
180 struct omap_dss_device *dssdev = omap_connector->dssdev;
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300181 struct videomode vm = {0};
Rob Clarkcd5351f2011-11-12 12:09:40 -0600182 struct drm_device *dev = connector->dev;
183 struct drm_display_mode *new_mode;
Archit Tanejabddabbe2013-03-26 19:15:20 +0530184 int r, ret = MODE_BAD;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600185
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300186 drm_display_mode_to_videomode(mode, &vm);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600187 mode->vrefresh = drm_mode_vrefresh(mode);
188
Archit Tanejabddabbe2013-03-26 19:15:20 +0530189 /*
190 * if the panel driver doesn't have a check_timings, it's most likely
191 * a fixed resolution panel, check if the timings match with the
192 * panel's timings
193 */
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300194 if (dssdev->ops->check_timings) {
195 r = dssdev->ops->check_timings(dssdev, &vm);
Archit Tanejabddabbe2013-03-26 19:15:20 +0530196 } else {
Peter Ujfalusi4520ff22016-09-22 14:07:03 +0300197 struct videomode t = {0};
Archit Tanejabddabbe2013-03-26 19:15:20 +0530198
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300199 dssdev->ops->get_timings(dssdev, &t);
Archit Tanejabddabbe2013-03-26 19:15:20 +0530200
Tomi Valkeinen50fa9f02016-11-23 13:24:00 +0200201 /*
202 * Ignore the flags, as we don't get them from
203 * drm_display_mode_to_videomode.
204 */
205 t.flags = 0;
206
Laurent Pinchartd501b122016-12-12 11:57:24 +0200207 if (memcmp(&vm, &t, sizeof(vm)))
Archit Tanejabddabbe2013-03-26 19:15:20 +0530208 r = -EINVAL;
209 else
210 r = 0;
211 }
212
213 if (!r) {
Rob Clarkcd5351f2011-11-12 12:09:40 -0600214 /* check if vrefresh is still valid */
215 new_mode = drm_mode_duplicate(dev, mode);
Tomi Valkeinen47aaaec2018-05-02 12:11:59 +0300216
217 if (!new_mode)
218 return MODE_BAD;
219
Peter Ujfalusida11bbbb2016-09-22 14:07:04 +0300220 new_mode->clock = vm.pixelclock / 1000;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600221 new_mode->vrefresh = 0;
222 if (mode->vrefresh == drm_mode_vrefresh(new_mode))
223 ret = MODE_OK;
224 drm_mode_destroy(dev, new_mode);
225 }
226
227 DBG("connector: mode %s: "
228 "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
229 (ret == MODE_OK) ? "valid" : "invalid",
230 mode->base.id, mode->name, mode->vrefresh, mode->clock,
231 mode->hdisplay, mode->hsync_start,
232 mode->hsync_end, mode->htotal,
233 mode->vdisplay, mode->vsync_start,
234 mode->vsync_end, mode->vtotal, mode->type, mode->flags);
235
236 return ret;
237}
238
Rob Clarkcd5351f2011-11-12 12:09:40 -0600239static const struct drm_connector_funcs omap_connector_funcs = {
Laurent Pinchart69a12262015-03-05 21:38:16 +0200240 .reset = drm_atomic_helper_connector_reset,
Rob Clarkcd5351f2011-11-12 12:09:40 -0600241 .detect = omap_connector_detect,
242 .fill_modes = drm_helper_probe_single_connector_modes,
243 .destroy = omap_connector_destroy,
Laurent Pinchart69a12262015-03-05 21:38:16 +0200244 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
245 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
Rob Clarkcd5351f2011-11-12 12:09:40 -0600246};
247
248static const struct drm_connector_helper_funcs omap_connector_helper_funcs = {
249 .get_modes = omap_connector_get_modes,
250 .mode_valid = omap_connector_mode_valid,
Rob Clarkcd5351f2011-11-12 12:09:40 -0600251};
252
Rob Clarkcd5351f2011-11-12 12:09:40 -0600253/* initialize connector */
254struct drm_connector *omap_connector_init(struct drm_device *dev,
Rob Clarkf5f94542012-12-04 13:59:12 -0600255 int connector_type, struct omap_dss_device *dssdev,
256 struct drm_encoder *encoder)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600257{
258 struct drm_connector *connector = NULL;
259 struct omap_connector *omap_connector;
Peter Ujfalusi3c596802017-06-02 15:26:35 +0300260 bool hpd_supported = false;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600261
262 DBG("%s", dssdev->name);
263
Laurent Pinchartc1dfe722018-03-02 02:43:45 +0200264 omapdss_device_get(dssdev);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600265
Laurent Pinchartd501b122016-12-12 11:57:24 +0200266 omap_connector = kzalloc(sizeof(*omap_connector), GFP_KERNEL);
Joe Perches78110bb2013-02-11 09:41:29 -0800267 if (!omap_connector)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600268 goto fail;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600269
270 omap_connector->dssdev = dssdev;
Rob Clarkf5f94542012-12-04 13:59:12 -0600271
Rob Clarkcd5351f2011-11-12 12:09:40 -0600272 connector = &omap_connector->base;
273
274 drm_connector_init(dev, connector, &omap_connector_funcs,
275 connector_type);
276 drm_connector_helper_add(connector, &omap_connector_helper_funcs);
277
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300278 if (dssdev->ops->register_hpd_cb) {
279 int ret = dssdev->ops->register_hpd_cb(dssdev,
280 omap_connector_hpd_cb,
281 omap_connector);
Peter Ujfalusi3c596802017-06-02 15:26:35 +0300282 if (!ret)
283 hpd_supported = true;
284 else if (ret != -ENOTSUPP)
285 DBG("%s: Failed to register HPD callback (%d).",
286 dssdev->name, ret);
287 }
288
289 if (hpd_supported)
290 connector->polled = DRM_CONNECTOR_POLL_HPD;
Laurent Pinchart83910ad2018-06-01 19:45:01 +0300291 else if (dssdev->ops->detect)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600292 connector->polled = DRM_CONNECTOR_POLL_CONNECT |
Peter Ujfalusi4573ebe2016-08-22 15:54:30 +0300293 DRM_CONNECTOR_POLL_DISCONNECT;
294 else
295 connector->polled = 0;
Rob Clarkcd5351f2011-11-12 12:09:40 -0600296
297 connector->interlace_allowed = 1;
298 connector->doublescan_allowed = 0;
299
Rob Clarkcd5351f2011-11-12 12:09:40 -0600300 return connector;
301
302fail:
YAMANE Toshiakifdbf20b2012-11-14 19:28:54 +0900303 if (connector)
Rob Clarkcd5351f2011-11-12 12:09:40 -0600304 omap_connector_destroy(connector);
Rob Clarkcd5351f2011-11-12 12:09:40 -0600305
306 return NULL;
307}