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_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         kfree(edid);
  49
  50         return ret;
  51 }
  52
  53 /**
  54  * intel_ddc_get_modes - get modelist from monitor
  55  * @connector: DRM connector device to use
  56  * @adapter: i2c adapter
  57  *
  58  * Fetch the EDID information from @connector using the DDC bus.
  59  */
  60 int intel_ddc_get_modes(struct drm_connector *connector,
  61                         struct i2c_adapter *adapter)
  62 {
  63         struct edid *edid;
  64
  65         edid = drm_get_edid(connector, adapter);
  66         if (!edid)
  67                 return 0;
  68
  69         return intel_connector_update_modes(connector, edid);
  70 }
  71
  72 static const struct drm_prop_enum_list force_audio_names[] = {
  73         { HDMI_AUDIO_OFF_DVI, "force-dvi" },
  74         { HDMI_AUDIO_OFF, "off" },
  75         { HDMI_AUDIO_AUTO, "auto" },
  76         { HDMI_AUDIO_ON, "on" },
  77 };
  78
  79 void
  80 intel_attach_force_audio_property(struct drm_connector *connector)
  81 {
  82         struct drm_device *dev = connector->dev;
  83         struct drm_i915_private *dev_priv = dev->dev_private;
  84         struct drm_property *prop;
  85
  86         prop = dev_priv->force_audio_property;
  87         if (prop == NULL) {
  88                 prop = drm_property_create_enum(dev, 0,
  89                                            "audio",
  90                                            force_audio_names,
  91                                            ARRAY_SIZE(force_audio_names));
  92                 if (prop == NULL)
  93                         return;
  94
  95                 dev_priv->force_audio_property = prop;
  96         }
  97         drm_connector_attach_property(connector, prop, 0);
  98 }
  99
 100 static const struct drm_prop_enum_list broadcast_rgb_names[] = {
 101         { 0, "Full" },
 102         { 1, "Limited 16:235" },
 103 };
 104
 105 void
 106 intel_attach_broadcast_rgb_property(struct drm_connector *connector)
 107 {
 108         struct drm_device *dev = connector->dev;
 109         struct drm_i915_private *dev_priv = dev->dev_private;
 110         struct drm_property *prop;
 111
 112         prop = dev_priv->broadcast_rgb_property;
 113         if (prop == NULL) {
 114                 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
 115                                            "Broadcast RGB",
 116                                            broadcast_rgb_names,
 117                                            ARRAY_SIZE(broadcast_rgb_names));
 118                 if (prop == NULL)
 119                         return;
 120
 121                 dev_priv->broadcast_rgb_property = prop;
 122         }
 123
 124         drm_connector_attach_property(connector, prop, 0);
 125 }