intel_modes.c revision 296548 
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 <sys/cdefs.h>
27__FBSDID("$FreeBSD: head/sys/dev/drm2/i915/intel_modes.c 296548 2016-03-08 20:33:02Z dumbbell $");
28
29#include <dev/drm2/drmP.h>
30#include <dev/drm2/drm_edid.h>
31#include <dev/drm2/i915/intel_drv.h>
32#include <dev/drm2/i915/i915_drv.h>
33#include <dev/iicbus/iiconf.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 */
40int 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
49	return ret;
50}
51
52/**
53 * intel_ddc_get_modes - get modelist from monitor
54 * @connector: DRM connector device to use
55 * @adapter: i2c adapter
56 *
57 * Fetch the EDID information from @connector using the DDC bus.
58 */
59int intel_ddc_get_modes(struct drm_connector *connector,
60			device_t adapter)
61{
62	struct edid *edid;
63	int ret;
64
65	edid = drm_get_edid(connector, adapter);
66	if (!edid)
67		return 0;
68
69	ret = intel_connector_update_modes(connector, edid);
70	free(edid, DRM_MEM_KMS);
71
72	return ret;
73}
74
75static const struct drm_prop_enum_list force_audio_names[] = {
76	{ HDMI_AUDIO_OFF_DVI, "force-dvi" },
77	{ HDMI_AUDIO_OFF, "off" },
78	{ HDMI_AUDIO_AUTO, "auto" },
79	{ HDMI_AUDIO_ON, "on" },
80};
81
82void
83intel_attach_force_audio_property(struct drm_connector *connector)
84{
85	struct drm_device *dev = connector->dev;
86	struct drm_i915_private *dev_priv = dev->dev_private;
87	struct drm_property *prop;
88
89	prop = dev_priv->force_audio_property;
90	if (prop == NULL) {
91		prop = drm_property_create_enum(dev, 0,
92					   "audio",
93					   force_audio_names,
94					   ARRAY_SIZE(force_audio_names));
95		if (prop == NULL)
96			return;
97
98		dev_priv->force_audio_property = prop;
99	}
100	drm_object_attach_property(&connector->base, prop, 0);
101}
102
103static const struct drm_prop_enum_list broadcast_rgb_names[] = {
104	{ 0, "Full" },
105	{ 1, "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