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Commit | Line | Data |
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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 | ||
69a12263 | 20 | #include <drm/drm_atomic_helper.h> |
2d278f54 LP |
21 | #include <drm/drm_crtc.h> |
22 | #include <drm/drm_crtc_helper.h> | |
cd5351f4 | 23 | |
2d278f54 | 24 | #include "omap_drv.h" |
cd5351f4 RC |
25 | |
26 | /* | |
27 | * connector funcs | |
28 | */ | |
29 | ||
30 | #define to_omap_connector(x) container_of(x, struct omap_connector, base) | |
31 | ||
32 | struct omap_connector { | |
33 | struct drm_connector base; | |
34 | struct omap_dss_device *dssdev; | |
4f930c0f | 35 | bool hdmi_mode; |
cd5351f4 RC |
36 | }; |
37 | ||
4f930c0f TV |
38 | bool omap_connector_get_hdmi_mode(struct drm_connector *connector) |
39 | { | |
40 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
41 | ||
42 | return omap_connector->hdmi_mode; | |
43 | } | |
44 | ||
f5f9454c | 45 | static enum drm_connector_status omap_connector_detect( |
cd5351f4 RC |
46 | struct drm_connector *connector, bool force) |
47 | { | |
48 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
49 | struct omap_dss_device *dssdev = omap_connector->dssdev; | |
50 | struct omap_dss_driver *dssdrv = dssdev->driver; | |
51 | enum drm_connector_status ret; | |
52 | ||
53 | if (dssdrv->detect) { | |
fdbf20b3 | 54 | if (dssdrv->detect(dssdev)) |
cd5351f4 | 55 | ret = connector_status_connected; |
fdbf20b3 | 56 | else |
cd5351f4 | 57 | ret = connector_status_disconnected; |
bddabbe1 AT |
58 | } else if (dssdev->type == OMAP_DISPLAY_TYPE_DPI || |
59 | dssdev->type == OMAP_DISPLAY_TYPE_DBI || | |
60 | dssdev->type == OMAP_DISPLAY_TYPE_SDI || | |
61 | dssdev->type == OMAP_DISPLAY_TYPE_DSI) { | |
62 | ret = connector_status_connected; | |
cd5351f4 RC |
63 | } else { |
64 | ret = connector_status_unknown; | |
65 | } | |
66 | ||
67 | VERB("%s: %d (force=%d)", omap_connector->dssdev->name, ret, force); | |
68 | ||
69 | return ret; | |
70 | } | |
71 | ||
72 | static void omap_connector_destroy(struct drm_connector *connector) | |
73 | { | |
74 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
75 | struct omap_dss_device *dssdev = omap_connector->dssdev; | |
76 | ||
cd5351f4 | 77 | DBG("%s", omap_connector->dssdev->name); |
34ea3d38 | 78 | drm_connector_unregister(connector); |
cd5351f4 RC |
79 | drm_connector_cleanup(connector); |
80 | kfree(omap_connector); | |
81 | ||
82 | omap_dss_put_device(dssdev); | |
83 | } | |
84 | ||
85 | #define MAX_EDID 512 | |
86 | ||
87 | static int omap_connector_get_modes(struct drm_connector *connector) | |
88 | { | |
89 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
90 | struct omap_dss_device *dssdev = omap_connector->dssdev; | |
91 | struct omap_dss_driver *dssdrv = dssdev->driver; | |
92 | struct drm_device *dev = connector->dev; | |
93 | int n = 0; | |
94 | ||
95 | DBG("%s", omap_connector->dssdev->name); | |
96 | ||
97 | /* if display exposes EDID, then we parse that in the normal way to | |
98 | * build table of supported modes.. otherwise (ie. fixed resolution | |
99 | * LCD panels) we just return a single mode corresponding to the | |
100 | * currently configured timings: | |
101 | */ | |
102 | if (dssdrv->read_edid) { | |
103 | void *edid = kzalloc(MAX_EDID, GFP_KERNEL); | |
104 | ||
105 | if ((dssdrv->read_edid(dssdev, edid, MAX_EDID) > 0) && | |
106 | drm_edid_is_valid(edid)) { | |
107 | drm_mode_connector_update_edid_property( | |
108 | connector, edid); | |
109 | n = drm_add_edid_modes(connector, edid); | |
4f930c0f TV |
110 | |
111 | omap_connector->hdmi_mode = | |
112 | drm_detect_hdmi_monitor(edid); | |
cd5351f4 RC |
113 | } else { |
114 | drm_mode_connector_update_edid_property( | |
115 | connector, NULL); | |
cd5351f4 | 116 | } |
4f930c0f | 117 | |
451023dc | 118 | kfree(edid); |
cd5351f4 RC |
119 | } else { |
120 | struct drm_display_mode *mode = drm_mode_create(dev); | |
da11bbbb | 121 | struct videomode vm = {0}; |
cd5351f4 | 122 | |
da11bbbb | 123 | dssdrv->get_timings(dssdev, &vm); |
cd5351f4 | 124 | |
da11bbbb | 125 | drm_display_mode_from_videomode(&vm, mode); |
cd5351f4 RC |
126 | |
127 | mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; | |
128 | drm_mode_set_name(mode); | |
129 | drm_mode_probed_add(connector, mode); | |
130 | ||
131 | n = 1; | |
132 | } | |
133 | ||
134 | return n; | |
135 | } | |
136 | ||
137 | static int omap_connector_mode_valid(struct drm_connector *connector, | |
138 | struct drm_display_mode *mode) | |
139 | { | |
140 | struct omap_connector *omap_connector = to_omap_connector(connector); | |
141 | struct omap_dss_device *dssdev = omap_connector->dssdev; | |
142 | struct omap_dss_driver *dssdrv = dssdev->driver; | |
da11bbbb | 143 | struct videomode vm = {0}; |
cd5351f4 RC |
144 | struct drm_device *dev = connector->dev; |
145 | struct drm_display_mode *new_mode; | |
bddabbe1 | 146 | int r, ret = MODE_BAD; |
cd5351f4 | 147 | |
da11bbbb | 148 | drm_display_mode_to_videomode(mode, &vm); |
cd5351f4 RC |
149 | mode->vrefresh = drm_mode_vrefresh(mode); |
150 | ||
bddabbe1 AT |
151 | /* |
152 | * if the panel driver doesn't have a check_timings, it's most likely | |
153 | * a fixed resolution panel, check if the timings match with the | |
154 | * panel's timings | |
155 | */ | |
156 | if (dssdrv->check_timings) { | |
da11bbbb | 157 | r = dssdrv->check_timings(dssdev, &vm); |
bddabbe1 | 158 | } else { |
4520ff28 | 159 | struct videomode t = {0}; |
bddabbe1 AT |
160 | |
161 | dssdrv->get_timings(dssdev, &t); | |
162 | ||
50fa9f0b TV |
163 | /* |
164 | * Ignore the flags, as we don't get them from | |
165 | * drm_display_mode_to_videomode. | |
166 | */ | |
167 | t.flags = 0; | |
168 | ||
d501b129 | 169 | if (memcmp(&vm, &t, sizeof(vm))) |
bddabbe1 AT |
170 | r = -EINVAL; |
171 | else | |
172 | r = 0; | |
173 | } | |
174 | ||
175 | if (!r) { | |
cd5351f4 RC |
176 | /* check if vrefresh is still valid */ |
177 | new_mode = drm_mode_duplicate(dev, mode); | |
da11bbbb | 178 | new_mode->clock = vm.pixelclock / 1000; |
cd5351f4 RC |
179 | new_mode->vrefresh = 0; |
180 | if (mode->vrefresh == drm_mode_vrefresh(new_mode)) | |
181 | ret = MODE_OK; | |
182 | drm_mode_destroy(dev, new_mode); | |
183 | } | |
184 | ||
185 | DBG("connector: mode %s: " | |
186 | "%d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", | |
187 | (ret == MODE_OK) ? "valid" : "invalid", | |
188 | mode->base.id, mode->name, mode->vrefresh, mode->clock, | |
189 | mode->hdisplay, mode->hsync_start, | |
190 | mode->hsync_end, mode->htotal, | |
191 | mode->vdisplay, mode->vsync_start, | |
192 | mode->vsync_end, mode->vtotal, mode->type, mode->flags); | |
193 | ||
194 | return ret; | |
195 | } | |
196 | ||
cd5351f4 | 197 | static const struct drm_connector_funcs omap_connector_funcs = { |
69a12263 | 198 | .reset = drm_atomic_helper_connector_reset, |
cd5351f4 RC |
199 | .detect = omap_connector_detect, |
200 | .fill_modes = drm_helper_probe_single_connector_modes, | |
201 | .destroy = omap_connector_destroy, | |
69a12263 LP |
202 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
203 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, | |
cd5351f4 RC |
204 | }; |
205 | ||
206 | static const struct drm_connector_helper_funcs omap_connector_helper_funcs = { | |
207 | .get_modes = omap_connector_get_modes, | |
208 | .mode_valid = omap_connector_mode_valid, | |
cd5351f4 RC |
209 | }; |
210 | ||
cd5351f4 RC |
211 | /* initialize connector */ |
212 | struct drm_connector *omap_connector_init(struct drm_device *dev, | |
f5f9454c RC |
213 | int connector_type, struct omap_dss_device *dssdev, |
214 | struct drm_encoder *encoder) | |
cd5351f4 RC |
215 | { |
216 | struct drm_connector *connector = NULL; | |
217 | struct omap_connector *omap_connector; | |
218 | ||
219 | DBG("%s", dssdev->name); | |
220 | ||
221 | omap_dss_get_device(dssdev); | |
222 | ||
d501b129 | 223 | omap_connector = kzalloc(sizeof(*omap_connector), GFP_KERNEL); |
78110bb8 | 224 | if (!omap_connector) |
cd5351f4 | 225 | goto fail; |
cd5351f4 RC |
226 | |
227 | omap_connector->dssdev = dssdev; | |
f5f9454c | 228 | |
cd5351f4 RC |
229 | connector = &omap_connector->base; |
230 | ||
231 | drm_connector_init(dev, connector, &omap_connector_funcs, | |
232 | connector_type); | |
233 | drm_connector_helper_add(connector, &omap_connector_helper_funcs); | |
234 | ||
4573ebe5 | 235 | if (dssdev->driver->detect) |
cd5351f4 | 236 | connector->polled = DRM_CONNECTOR_POLL_CONNECT | |
4573ebe5 PU |
237 | DRM_CONNECTOR_POLL_DISCONNECT; |
238 | else | |
239 | connector->polled = 0; | |
cd5351f4 RC |
240 | |
241 | connector->interlace_allowed = 1; | |
242 | connector->doublescan_allowed = 0; | |
243 | ||
cd5351f4 RC |
244 | return connector; |
245 | ||
246 | fail: | |
fdbf20b3 | 247 | if (connector) |
cd5351f4 | 248 | omap_connector_destroy(connector); |
cd5351f4 RC |
249 | |
250 | return NULL; | |
251 | } |