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 <drm/drm_edid.h> 29 #include <drm/drmP.h> 30 #include "intel_drv.h" 31 #include "i915_drv.h" 32 33 /** 34 * intel_connector_update_modes - update connector from edid 35 * @connector: DRM connector device to use 36 * @edid: previously read EDID information 37 */ 38 int intel_connector_update_modes(struct drm_connector *connector, 39 struct edid *edid) 40 { 41 int ret; 42 43 drm_mode_connector_update_edid_property(connector, edid); 44 ret = drm_add_edid_modes(connector, edid); 45 drm_edid_to_eld(connector, edid); 46 47 return ret; 48 } 49 50 /** 51 * intel_ddc_get_modes - get modelist from monitor 52 * @connector: DRM connector device to use 53 * @adapter: i2c adapter 54 * 55 * Fetch the EDID information from @connector using the DDC bus. 56 */ 57 int intel_ddc_get_modes(struct drm_connector *connector, 58 struct i2c_adapter *adapter) 59 { 60 struct edid *edid; 61 int ret; 62 63 edid = drm_get_edid(connector, adapter); 64 if (!edid) 65 return 0; 66 67 ret = intel_connector_update_modes(connector, edid); 68 kfree(edid); 69 70 return ret; 71 } 72 73 static const struct drm_prop_enum_list force_audio_names[] = { 74 { HDMI_AUDIO_OFF_DVI, "force-dvi" }, 75 { HDMI_AUDIO_OFF, "off" }, 76 { HDMI_AUDIO_AUTO, "auto" }, 77 { HDMI_AUDIO_ON, "on" }, 78 }; 79 80 void 81 intel_attach_force_audio_property(struct drm_connector *connector) 82 { 83 struct drm_device *dev = connector->dev; 84 struct drm_i915_private *dev_priv = to_i915(dev); 85 struct drm_property *prop; 86 87 prop = dev_priv->force_audio_property; 88 if (prop == NULL) { 89 prop = drm_property_create_enum(dev, 0, 90 "audio", 91 force_audio_names, 92 ARRAY_SIZE(force_audio_names)); 93 if (prop == NULL) 94 return; 95 96 dev_priv->force_audio_property = prop; 97 } 98 drm_object_attach_property(&connector->base, prop, 0); 99 } 100 101 static const struct drm_prop_enum_list broadcast_rgb_names[] = { 102 { INTEL_BROADCAST_RGB_AUTO, "Automatic" }, 103 { INTEL_BROADCAST_RGB_FULL, "Full" }, 104 { INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" }, 105 }; 106 107 void 108 intel_attach_broadcast_rgb_property(struct drm_connector *connector) 109 { 110 struct drm_device *dev = connector->dev; 111 struct drm_i915_private *dev_priv = to_i915(dev); 112 struct drm_property *prop; 113 114 prop = dev_priv->broadcast_rgb_property; 115 if (prop == NULL) { 116 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, 117 "Broadcast RGB", 118 broadcast_rgb_names, 119 ARRAY_SIZE(broadcast_rgb_names)); 120 if (prop == NULL) 121 return; 122 123 dev_priv->broadcast_rgb_property = prop; 124 } 125 126 drm_object_attach_property(&connector->base, prop, 0); 127 } 128 129 void 130 intel_attach_aspect_ratio_property(struct drm_connector *connector) 131 { 132 if (!drm_mode_create_aspect_ratio_property(connector->dev)) 133 drm_object_attach_property(&connector->base, 134 connector->dev->mode_config.aspect_ratio_property, 135 DRM_MODE_PICTURE_ASPECT_NONE); 136 } 137