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 <linux/fb.h>
29 #include <drm/drm_edid.h>
30 #include <drm/drmP.h>
31 #include "intel_drv.h"
32 #include "i915_drv.h"
33
34 /**
35 * intel_connector_update_modes - update connector from edid
36 * @connector: DRM connector device to use
37 * @edid: previously read EDID information
38 */
intel_connector_update_modes(struct drm_connector * connector,struct edid * edid)39 int intel_connector_update_modes(struct drm_connector *connector,
40 struct edid *edid)
41 {
42 int ret;
43
44 drm_mode_connector_update_edid_property(connector, edid);
45 ret = drm_add_edid_modes(connector, edid);
46 drm_edid_to_eld(connector, edid);
47
48 return ret;
49 }
50
51 /**
52 * intel_ddc_get_modes - get modelist from monitor
53 * @connector: DRM connector device to use
54 * @adapter: i2c adapter
55 *
56 * Fetch the EDID information from @connector using the DDC bus.
57 */
intel_ddc_get_modes(struct drm_connector * connector,struct i2c_adapter * adapter)58 int intel_ddc_get_modes(struct drm_connector *connector,
59 struct i2c_adapter *adapter)
60 {
61 struct edid *edid;
62 int ret;
63
64 edid = drm_get_edid(connector, adapter);
65 if (!edid)
66 return 0;
67
68 ret = intel_connector_update_modes(connector, edid);
69 kfree(edid);
70
71 return ret;
72 }
73
74 static const struct drm_prop_enum_list force_audio_names[] = {
75 { HDMI_AUDIO_OFF_DVI, "force-dvi" },
76 { HDMI_AUDIO_OFF, "off" },
77 { HDMI_AUDIO_AUTO, "auto" },
78 { HDMI_AUDIO_ON, "on" },
79 };
80
81 void
intel_attach_force_audio_property(struct drm_connector * connector)82 intel_attach_force_audio_property(struct drm_connector *connector)
83 {
84 struct drm_device *dev = connector->dev;
85 struct drm_i915_private *dev_priv = dev->dev_private;
86 struct drm_property *prop;
87
88 prop = dev_priv->force_audio_property;
89 if (prop == NULL) {
90 prop = drm_property_create_enum(dev, 0,
91 "audio",
92 force_audio_names,
93 ARRAY_SIZE(force_audio_names));
94 if (prop == NULL)
95 return;
96
97 dev_priv->force_audio_property = prop;
98 }
99 drm_object_attach_property(&connector->base, prop, 0);
100 }
101
102 static const struct drm_prop_enum_list broadcast_rgb_names[] = {
103 { INTEL_BROADCAST_RGB_AUTO, "Automatic" },
104 { INTEL_BROADCAST_RGB_FULL, "Full" },
105 { INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" },
106 };
107
108 void
intel_attach_broadcast_rgb_property(struct drm_connector * connector)109 intel_attach_broadcast_rgb_property(struct drm_connector *connector)
110 {
111 struct drm_device *dev = connector->dev;
112 struct drm_i915_private *dev_priv = dev->dev_private;
113 struct drm_property *prop;
114
115 prop = dev_priv->broadcast_rgb_property;
116 if (prop == NULL) {
117 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
118 "Broadcast RGB",
119 broadcast_rgb_names,
120 ARRAY_SIZE(broadcast_rgb_names));
121 if (prop == NULL)
122 return;
123
124 dev_priv->broadcast_rgb_property = prop;
125 }
126
127 drm_object_attach_property(&connector->base, prop, 0);
128 }
129
130 void
intel_attach_aspect_ratio_property(struct drm_connector * connector)131 intel_attach_aspect_ratio_property(struct drm_connector *connector)
132 {
133 if (!drm_mode_create_aspect_ratio_property(connector->dev))
134 drm_object_attach_property(&connector->base,
135 connector->dev->mode_config.aspect_ratio_property,
136 DRM_MODE_PICTURE_ASPECT_NONE);
137 }
138