Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
[linux-2.6-microblaze.git] / drivers / gpu / drm / i915 / intel_modes.c
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 <drm/drm_edid.h>
32 #include "intel_drv.h"
33 #include "i915_drv.h"
34
35 /**
36  * intel_connector_update_modes - update connector from edid
37  * @connector: DRM connector device to use
38  * @edid: previously read EDID information
39  */
40 int intel_connector_update_modes(struct drm_connector *connector,
41                                 struct edid *edid)
42 {
43         int ret;
44
45         drm_mode_connector_update_edid_property(connector, edid);
46         ret = drm_add_edid_modes(connector, edid);
47         drm_edid_to_eld(connector, edid);
48         kfree(edid);
49
50         return ret;
51 }
52
53 /**
54  * intel_ddc_get_modes - get modelist from monitor
55  * @connector: DRM connector device to use
56  * @adapter: i2c adapter
57  *
58  * Fetch the EDID information from @connector using the DDC bus.
59  */
60 int intel_ddc_get_modes(struct drm_connector *connector,
61                         struct i2c_adapter *adapter)
62 {
63         struct edid *edid;
64
65         edid = drm_get_edid(connector, adapter);
66         if (!edid)
67                 return 0;
68
69         return intel_connector_update_modes(connector, edid);
70 }
71
72 static const struct drm_prop_enum_list force_audio_names[] = {
73         { HDMI_AUDIO_OFF_DVI, "force-dvi" },
74         { HDMI_AUDIO_OFF, "off" },
75         { HDMI_AUDIO_AUTO, "auto" },
76         { HDMI_AUDIO_ON, "on" },
77 };
78
79 void
80 intel_attach_force_audio_property(struct drm_connector *connector)
81 {
82         struct drm_device *dev = connector->dev;
83         struct drm_i915_private *dev_priv = dev->dev_private;
84         struct drm_property *prop;
85
86         prop = dev_priv->force_audio_property;
87         if (prop == NULL) {
88                 prop = drm_property_create_enum(dev, 0,
89                                            "audio",
90                                            force_audio_names,
91                                            ARRAY_SIZE(force_audio_names));
92                 if (prop == NULL)
93                         return;
94
95                 dev_priv->force_audio_property = prop;
96         }
97         drm_connector_attach_property(connector, prop, 0);
98 }
99
100 static const struct drm_prop_enum_list broadcast_rgb_names[] = {
101         { 0, "Full" },
102         { 1, "Limited 16:235" },
103 };
104
105 void
106 intel_attach_broadcast_rgb_property(struct drm_connector *connector)
107 {
108         struct drm_device *dev = connector->dev;
109         struct drm_i915_private *dev_priv = dev->dev_private;
110         struct drm_property *prop;
111
112         prop = dev_priv->broadcast_rgb_property;
113         if (prop == NULL) {
114                 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
115                                            "Broadcast RGB",
116                                            broadcast_rgb_names,
117                                            ARRAY_SIZE(broadcast_rgb_names));
118                 if (prop == NULL)
119                         return;
120
121                 dev_priv->broadcast_rgb_property = prop;
122         }
123
124         drm_connector_attach_property(connector, prop, 0);
125 }