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 "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         kfree(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
  64         edid = drm_get_edid(connector, adapter);
  65         if (!edid)
  66                 return 0;
  67
  68         return intel_connector_update_modes(connector, edid);
  69 }
  70
  71 static const struct drm_prop_enum_list force_audio_names[] = {
  72         { HDMI_AUDIO_OFF_DVI, "force-dvi" },
  73         { HDMI_AUDIO_OFF, "off" },
  74         { HDMI_AUDIO_AUTO, "auto" },
  75         { HDMI_AUDIO_ON, "on" },
  76 };
  77
  78 void
  79 intel_attach_force_audio_property(struct drm_connector *connector)
  80 {
  81         struct drm_device *dev = connector->dev;
  82         struct drm_i915_private *dev_priv = dev->dev_private;
  83         struct drm_property *prop;
  84
  85         prop = dev_priv->force_audio_property;
  86         if (prop == NULL) {
  87                 prop = drm_property_create_enum(dev, 0,
  88                                            "audio",
  89                                            force_audio_names,
  90                                            ARRAY_SIZE(force_audio_names));
  91                 if (prop == NULL)
  92                         return;
  93
  94                 dev_priv->force_audio_property = prop;
  95         }
  96         drm_connector_attach_property(connector, prop, 0);
  97 }
  98
  99 static const struct drm_prop_enum_list broadcast_rgb_names[] = {
 100         { 0, "Full" },
 101         { 1, "Limited 16:235" },
 102 };
 103
 104 void
 105 intel_attach_broadcast_rgb_property(struct drm_connector *connector)
 106 {
 107         struct drm_device *dev = connector->dev;
 108         struct drm_i915_private *dev_priv = dev->dev_private;
 109         struct drm_property *prop;
 110
 111         prop = dev_priv->broadcast_rgb_property;
 112         if (prop == NULL) {
 113                 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
 114                                            "Broadcast RGB",
 115                                            broadcast_rgb_names,
 116                                            ARRAY_SIZE(broadcast_rgb_names));
 117                 if (prop == NULL)
 118                         return;
 119
 120                 dev_priv->broadcast_rgb_property = prop;
 121         }
 122
 123         drm_connector_attach_property(connector, prop, 0);
 124 }