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}