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 */
39int 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 */
58int 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
74static 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
81void
82intel_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
102static 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
108void
109intel_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
130void
131intel_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