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  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 <drm/drm_edid.h>
  32. #include "intel_drv.h"
  33. #include "i915_drv.h"
  34.  
  35. /**
  36.  * intel_connector_update_modes - update connector from edid
  37.  * @connector: DRM connector device to use
  38.  * @edid: previously read EDID information
  39.  */
  40. int intel_connector_update_modes(struct drm_connector *connector,
  41.                                 struct edid *edid)
  42. {
  43.         int ret;
  44.  
  45.         drm_mode_connector_update_edid_property(connector, edid);
  46.         ret = drm_add_edid_modes(connector, edid);
  47.         drm_edid_to_eld(connector, edid);
  48.  
  49.         return ret;
  50. }
  51.  
  52. /**
  53.  * intel_ddc_get_modes - get modelist from monitor
  54.  * @connector: DRM connector device to use
  55.  * @adapter: i2c adapter
  56.  *
  57.  * Fetch the EDID information from @connector using the DDC bus.
  58.  */
  59. int intel_ddc_get_modes(struct drm_connector *connector,
  60.                         struct i2c_adapter *adapter)
  61. {
  62.         struct edid *edid;
  63.         int ret;
  64.  
  65.         edid = drm_get_edid(connector, adapter);
  66.         if (!edid)
  67.                 return 0;
  68.  
  69.         ret = intel_connector_update_modes(connector, edid);
  70.         kfree(edid);
  71.  
  72.         return ret;
  73. }
  74.  
  75. static const struct drm_prop_enum_list force_audio_names[] = {
  76.         { HDMI_AUDIO_OFF_DVI, "force-dvi" },
  77.         { HDMI_AUDIO_OFF, "off" },
  78.         { HDMI_AUDIO_AUTO, "auto" },
  79.         { HDMI_AUDIO_ON, "on" },
  80. };
  81.  
  82. void
  83. intel_attach_force_audio_property(struct drm_connector *connector)
  84. {
  85.         struct drm_device *dev = connector->dev;
  86.         struct drm_i915_private *dev_priv = dev->dev_private;
  87.         struct drm_property *prop;
  88. #if 0
  89.         prop = dev_priv->force_audio_property;
  90.         if (prop == NULL) {
  91.                 prop = drm_property_create_enum(dev, 0,
  92.                                            "audio",
  93.                                            force_audio_names,
  94.                                            ARRAY_SIZE(force_audio_names));
  95.                 if (prop == NULL)
  96.                         return;
  97.  
  98.                 dev_priv->force_audio_property = prop;
  99.         }
  100.         drm_object_attach_property(&connector->base, prop, 0);
  101. #endif
  102. }
  103.  
  104. static const struct drm_prop_enum_list broadcast_rgb_names[] = {
  105.         { 0, "Full" },
  106.         { 1, "Limited 16:235" },
  107. };
  108.  
  109. void
  110. intel_attach_broadcast_rgb_property(struct drm_connector *connector)
  111. {
  112.         struct drm_device *dev = connector->dev;
  113.         struct drm_i915_private *dev_priv = dev->dev_private;
  114.         struct drm_property *prop;
  115. #if 0
  116.         prop = dev_priv->broadcast_rgb_property;
  117.         if (prop == NULL) {
  118.                 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
  119.                                            "Broadcast RGB",
  120.                                            broadcast_rgb_names,
  121.                                            ARRAY_SIZE(broadcast_rgb_names));
  122.                 if (prop == NULL)
  123.                         return;
  124.  
  125.                 dev_priv->broadcast_rgb_property = prop;
  126.         }
  127.  
  128.         drm_object_attach_property(&connector->base, prop, 0);
  129. #endif
  130. }
  131.