intel_modes.c revision 277487 
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 277487 2015-01-21 16:10:37Z kib $");
28
29#include <dev/drm2/drmP.h>
30#include <dev/drm2/drm.h>
31#include <dev/drm2/i915/i915_drm.h>
32#include <dev/drm2/i915/i915_drv.h>
33#include <dev/drm2/i915/intel_drv.h>
34#include <dev/drm2/drm_edid.h>
35#include <dev/iicbus/iiconf.h>
36
37/**
38 * intel_ddc_probe
39 *
40 */
41bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus)
42{
43	struct drm_i915_private *dev_priv = intel_encoder->base.dev->dev_private;
44	u8 out_buf[] = { 0x0, 0x0};
45	u8 buf[2];
46	struct iic_msg msgs[] = {
47		{
48			.slave = DDC_ADDR << 1,
49			.flags = IIC_M_WR,
50			.len = 1,
51			.buf = out_buf,
52		},
53		{
54			.slave = DDC_ADDR << 1,
55			.flags = IIC_M_RD,
56			.len = 1,
57			.buf = buf,
58		}
59	};
60
61	return (iicbus_transfer(intel_gmbus_get_adapter(dev_priv, ddc_bus),
62	    msgs, 2) == 0/* XXXKIB  2*/);
63}
64
65/**
66 * intel_ddc_get_modes - get modelist from monitor
67 * @connector: DRM connector device to use
68 * @adapter: i2c adapter
69 *
70 * Fetch the EDID information from @connector using the DDC bus.
71 */
72int
73intel_ddc_get_modes(struct drm_connector *connector, device_t adapter)
74{
75	struct edid *edid;
76	int ret = 0;
77
78	edid = drm_get_edid(connector, adapter);
79	if (edid) {
80		drm_mode_connector_update_edid_property(connector, edid);
81		ret = drm_add_edid_modes(connector, edid);
82		drm_edid_to_eld(connector, edid);
83		connector->display_info.raw_edid = NULL;
84		free(edid, DRM_MEM_KMS);
85	}
86
87	return ret;
88}
89
90static 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
97void
98intel_attach_force_audio_property(struct drm_connector *connector)
99{
100	struct drm_device *dev = connector->dev;
101	struct drm_i915_private *dev_priv = dev->dev_private;
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					   DRM_ARRAY_SIZE(force_audio_names));
110		if (prop == NULL)
111			return;
112
113		dev_priv->force_audio_property = prop;
114	}
115	drm_connector_attach_property(connector, prop, 0);
116}
117
118static const struct drm_prop_enum_list broadcast_rgb_names[] = {
119	{ 0, "Full" },
120	{ 1, "Limited 16:235" },
121};
122
123void
124intel_attach_broadcast_rgb_property(struct drm_connector *connector)
125{
126	struct drm_device *dev = connector->dev;
127	struct drm_i915_private *dev_priv = dev->dev_private;
128	struct drm_property *prop;
129
130	prop = dev_priv->broadcast_rgb_property;
131	if (prop == NULL) {
132		prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
133		    "Broadcast RGB",
134		    broadcast_rgb_names,
135		    DRM_ARRAY_SIZE(broadcast_rgb_names));
136		if (prop == NULL)
137			return;
138
139		dev_priv->broadcast_rgb_property = prop;
140	}
141
142	drm_connector_attach_property(connector, prop, 0);
143}
144