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 static void intel_connector_update_eld_conn_type(struct drm_connector *connector) 34 { 35 u8 conn_type; 36 37 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort || 38 connector->connector_type == DRM_MODE_CONNECTOR_eDP) { 39 conn_type = DRM_ELD_CONN_TYPE_DP; 40 } else { 41 conn_type = DRM_ELD_CONN_TYPE_HDMI; 42 } 43 44 connector->eld[DRM_ELD_SAD_COUNT_CONN_TYPE] &= ~DRM_ELD_CONN_TYPE_MASK; 45 connector->eld[DRM_ELD_SAD_COUNT_CONN_TYPE] |= conn_type; 46 } 47 48 /** 49 * intel_connector_update_modes - update connector from edid 50 * @connector: DRM connector device to use 51 * @edid: previously read EDID information 52 */ 53 int intel_connector_update_modes(struct drm_connector *connector, 54 struct edid *edid) 55 { 56 int ret; 57 58 drm_mode_connector_update_edid_property(connector, edid); 59 ret = drm_add_edid_modes(connector, edid); 60 drm_edid_to_eld(connector, edid); 61 62 intel_connector_update_eld_conn_type(connector); 63 64 return ret; 65 } 66 67 /** 68 * intel_ddc_get_modes - get modelist from monitor 69 * @connector: DRM connector device to use 70 * @adapter: i2c adapter 71 * 72 * Fetch the EDID information from @connector using the DDC bus. 73 */ 74 int intel_ddc_get_modes(struct drm_connector *connector, 75 struct i2c_adapter *adapter) 76 { 77 struct edid *edid; 78 int ret; 79 80 edid = drm_get_edid(connector, adapter); 81 if (!edid) 82 return 0; 83 84 ret = intel_connector_update_modes(connector, edid); 85 kfree(edid); 86 87 return ret; 88 } 89 90 static 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 97 void 98 intel_attach_force_audio_property(struct drm_connector *connector) 99 { 100 struct drm_device *dev = connector->dev; 101 struct drm_i915_private *dev_priv = to_i915(dev); 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 ARRAY_SIZE(force_audio_names)); 110 if (prop == NULL) 111 return; 112 113 dev_priv->force_audio_property = prop; 114 } 115 drm_object_attach_property(&connector->base, prop, 0); 116 } 117 118 static const struct drm_prop_enum_list broadcast_rgb_names[] = { 119 { INTEL_BROADCAST_RGB_AUTO, "Automatic" }, 120 { INTEL_BROADCAST_RGB_FULL, "Full" }, 121 { INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" }, 122 }; 123 124 void 125 intel_attach_broadcast_rgb_property(struct drm_connector *connector) 126 { 127 struct drm_device *dev = connector->dev; 128 struct drm_i915_private *dev_priv = to_i915(dev); 129 struct drm_property *prop; 130 131 prop = dev_priv->broadcast_rgb_property; 132 if (prop == NULL) { 133 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, 134 "Broadcast RGB", 135 broadcast_rgb_names, 136 ARRAY_SIZE(broadcast_rgb_names)); 137 if (prop == NULL) 138 return; 139 140 dev_priv->broadcast_rgb_property = prop; 141 } 142 143 drm_object_attach_property(&connector->base, prop, 0); 144 } 145 146 void 147 intel_attach_aspect_ratio_property(struct drm_connector *connector) 148 { 149 if (!drm_mode_create_aspect_ratio_property(connector->dev)) 150 drm_object_attach_property(&connector->base, 151 connector->dev->mode_config.aspect_ratio_property, 152 DRM_MODE_PICTURE_ASPECT_NONE); 153 } 154