sys/dev/drm2/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 <sys/cdefs.h>
  27 __FBSDID("$FreeBSD$");
  28
  29 #include <dev/drm2/drmP.h>
  30 #include <dev/drm2/drm.h>
  31 #include <dev/drm2/i915/i915_drm.h>
  32 #include <dev/drm2/i915/i915_drv.h>
  33 #include <dev/drm2/i915/intel_drv.h>
  34 #include <dev/drm2/drm_edid.h>
  35 #include <dev/iicbus/iiconf.h>
  36
  37 /**
  38  * intel_ddc_probe
  39  *
  40  */
  41 bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus)
  42 {
  43         struct drm_i915_private *dev_priv = intel_encoder->base.dev->dev_private;
  44         u8 out_buf[] = { 0x0, 0x0};
  45         u8 buf[2];
  46         struct iic_msg msgs[] = {
  47                 {
  48                         .slave = DDC_ADDR << 1,
  49                         .flags = IIC_M_WR,
  50                         .len = 1,
  51                         .buf = out_buf,
  52                 },
  53                 {
  54                         .slave = DDC_ADDR << 1,
  55                         .flags = IIC_M_RD,
  56                         .len = 1,
  57                         .buf = buf,
  58                 }
  59         };
  60
  61         return (iicbus_transfer(intel_gmbus_get_adapter(dev_priv, ddc_bus),
  62             msgs, 2) == 0/* XXXKIB  2*/);
  63 }
  64
  65 /**
  66  * intel_ddc_get_modes - get modelist from monitor
  67  * @connector: DRM connector device to use
  68  * @adapter: i2c adapter
  69  *
  70  * Fetch the EDID information from @connector using the DDC bus.
  71  */
  72 int
  73 intel_ddc_get_modes(struct drm_connector *connector, device_t adapter)
  74 {
  75         struct edid *edid;
  76         int ret = 0;
  77
  78         edid = drm_get_edid(connector, adapter);
  79         if (edid) {
  80                 drm_mode_connector_update_edid_property(connector, edid);
  81                 ret = drm_add_edid_modes(connector, edid);
  82                 drm_edid_to_eld(connector, edid);
  83                 free(edid, DRM_MEM_KMS);
  84         }
  85
  86         return ret;
  87 }
  88
  89 static const struct drm_prop_enum_list force_audio_names[] = {
  90         { HDMI_AUDIO_OFF_DVI, "force-dvi" },
  91         { HDMI_AUDIO_OFF, "off" },
  92         { HDMI_AUDIO_AUTO, "auto" },
  93         { HDMI_AUDIO_ON, "on" },
  94 };
  95
  96 void
  97 intel_attach_force_audio_property(struct drm_connector *connector)
  98 {
  99         struct drm_device *dev = connector->dev;
 100         struct drm_i915_private *dev_priv = dev->dev_private;
 101         struct drm_property *prop;
 102
 103         prop = dev_priv->force_audio_property;
 104         if (prop == NULL) {
 105                 prop = drm_property_create_enum(dev, 0,
 106                                            "audio",
 107                                            force_audio_names,
 108                                            ARRAY_SIZE(force_audio_names));
 109                 if (prop == NULL)
 110                         return;
 111
 112                 dev_priv->force_audio_property = prop;
 113         }
 114         drm_object_attach_property(&connector->base, prop, 0);
 115 }
 116
 117 static const struct drm_prop_enum_list broadcast_rgb_names[] = {
 118         { 0, "Full" },
 119         { 1, "Limited 16:235" },
 120 };
 121
 122 void
 123 intel_attach_broadcast_rgb_property(struct drm_connector *connector)
 124 {
 125         struct drm_device *dev = connector->dev;
 126         struct drm_i915_private *dev_priv = dev->dev_private;
 127         struct drm_property *prop;
 128
 129         prop = dev_priv->broadcast_rgb_property;
 130         if (prop == NULL) {
 131                 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
 132                     "Broadcast RGB",
 133                     broadcast_rgb_names,
 134                     ARRAY_SIZE(broadcast_rgb_names));
 135                 if (prop == NULL)
 136                         return;
 137
 138                 dev_priv->broadcast_rgb_property = prop;
 139         }
 140
 141         drm_object_attach_property(&connector->base, prop, 0);
 142 }