drivers/gpu/drm/i915/intel_modes.c

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