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 */ 39 int 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 */ 58 int 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 74 static 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 81 void 82 intel_attach_force_audio_property(struct drm_connector *connector) 83 { 84 struct drm_device *dev = connector->dev; 85 struct drm_i915_private *dev_priv = to_i915(dev); 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 } 101 102 static 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 }; 107 108 void 109 intel_attach_broadcast_rgb_property(struct drm_connector *connector) 110 { 111 struct drm_device *dev = connector->dev; 112 struct drm_i915_private *dev_priv = to_i915(dev); 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 } 129 130 void 131 intel_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