1 /*
2 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
3 * Copyright (c) 2007, 2010 Intel Corporation
4 * Jesse Barnes <jesse.barnes@intel.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 */
25
26 #include <linux/slab.h>
27 #include <linux/i2c.h>
28 #include <drm/drm_edid.h>
29 #include <drm/drmP.h>
30 #include "intel_drv.h"
31 #include "i915_drv.h"
32
intel_connector_update_eld_conn_type(struct drm_connector * connector)33 static void intel_connector_update_eld_conn_type(struct drm_connector *connector)
34 {
35 u8 conn_type;
36
37 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
38 connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
39 conn_type = DRM_ELD_CONN_TYPE_DP;
40 } else {
41 conn_type = DRM_ELD_CONN_TYPE_HDMI;
42 }
43
44 connector->eld[DRM_ELD_SAD_COUNT_CONN_TYPE] &= ~DRM_ELD_CONN_TYPE_MASK;
45 connector->eld[DRM_ELD_SAD_COUNT_CONN_TYPE] |= conn_type;
46 }
47
48 /**
49 * intel_connector_update_modes - update connector from edid
50 * @connector: DRM connector device to use
51 * @edid: previously read EDID information
52 */
intel_connector_update_modes(struct drm_connector * connector,struct edid * edid)53 int intel_connector_update_modes(struct drm_connector *connector,
54 struct edid *edid)
55 {
56 int ret;
57
58 drm_mode_connector_update_edid_property(connector, edid);
59 ret = drm_add_edid_modes(connector, edid);
60 drm_edid_to_eld(connector, edid);
61
62 intel_connector_update_eld_conn_type(connector);
63
64 return ret;
65 }
66
67 /**
68 * intel_ddc_get_modes - get modelist from monitor
69 * @connector: DRM connector device to use
70 * @adapter: i2c adapter
71 *
72 * Fetch the EDID information from @connector using the DDC bus.
73 */
intel_ddc_get_modes(struct drm_connector * connector,struct i2c_adapter * adapter)74 int intel_ddc_get_modes(struct drm_connector *connector,
75 struct i2c_adapter *adapter)
76 {
77 struct edid *edid;
78 int ret;
79
80 edid = drm_get_edid(connector, adapter);
81 if (!edid)
82 return 0;
83
84 ret = intel_connector_update_modes(connector, edid);
85 kfree(edid);
86
87 return ret;
88 }
89
90 static const struct drm_prop_enum_list force_audio_names[] = {
91 { HDMI_AUDIO_OFF_DVI, "force-dvi" },
92 { HDMI_AUDIO_OFF, "off" },
93 { HDMI_AUDIO_AUTO, "auto" },
94 { HDMI_AUDIO_ON, "on" },
95 };
96
97 void
intel_attach_force_audio_property(struct drm_connector * connector)98 intel_attach_force_audio_property(struct drm_connector *connector)
99 {
100 struct drm_device *dev = connector->dev;
101 struct drm_i915_private *dev_priv = to_i915(dev);
102 struct drm_property *prop;
103
104 prop = dev_priv->force_audio_property;
105 if (prop == NULL) {
106 prop = drm_property_create_enum(dev, 0,
107 "audio",
108 force_audio_names,
109 ARRAY_SIZE(force_audio_names));
110 if (prop == NULL)
111 return;
112
113 dev_priv->force_audio_property = prop;
114 }
115 drm_object_attach_property(&connector->base, prop, 0);
116 }
117
118 static const struct drm_prop_enum_list broadcast_rgb_names[] = {
119 { INTEL_BROADCAST_RGB_AUTO, "Automatic" },
120 { INTEL_BROADCAST_RGB_FULL, "Full" },
121 { INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" },
122 };
123
124 void
intel_attach_broadcast_rgb_property(struct drm_connector * connector)125 intel_attach_broadcast_rgb_property(struct drm_connector *connector)
126 {
127 struct drm_device *dev = connector->dev;
128 struct drm_i915_private *dev_priv = to_i915(dev);
129 struct drm_property *prop;
130
131 prop = dev_priv->broadcast_rgb_property;
132 if (prop == NULL) {
133 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
134 "Broadcast RGB",
135 broadcast_rgb_names,
136 ARRAY_SIZE(broadcast_rgb_names));
137 if (prop == NULL)
138 return;
139
140 dev_priv->broadcast_rgb_property = prop;
141 }
142
143 drm_object_attach_property(&connector->base, prop, 0);
144 }
145
146 void
intel_attach_aspect_ratio_property(struct drm_connector * connector)147 intel_attach_aspect_ratio_property(struct drm_connector *connector)
148 {
149 if (!drm_mode_create_aspect_ratio_property(connector->dev))
150 drm_object_attach_property(&connector->base,
151 connector->dev->mode_config.aspect_ratio_property,
152 DRM_MODE_PICTURE_ASPECT_NONE);
153 }
154