intel_modes.c 4.0 KB

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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. #include <linux/slab.h>
  26. #include <linux/i2c.h>
  27. #include <linux/fb.h>
  28. #include <drm/drm_edid.h>
  29. #include <drm/drmP.h>
  30. #include "intel_drv.h"
  31. #include "i915_drv.h"
  32. /**
  33. * intel_connector_update_modes - update connector from edid
  34. * @connector: DRM connector device to use
  35. * @edid: previously read EDID information
  36. */
  37. int intel_connector_update_modes(struct drm_connector *connector,
  38. struct edid *edid)
  39. {
  40. int ret;
  41. drm_mode_connector_update_edid_property(connector, edid);
  42. ret = drm_add_edid_modes(connector, edid);
  43. drm_edid_to_eld(connector, edid);
  44. return ret;
  45. }
  46. /**
  47. * intel_ddc_get_modes - get modelist from monitor
  48. * @connector: DRM connector device to use
  49. * @adapter: i2c adapter
  50. *
  51. * Fetch the EDID information from @connector using the DDC bus.
  52. */
  53. int intel_ddc_get_modes(struct drm_connector *connector,
  54. struct i2c_adapter *adapter)
  55. {
  56. struct edid *edid;
  57. int ret;
  58. edid = drm_get_edid(connector, adapter);
  59. if (!edid)
  60. return 0;
  61. ret = intel_connector_update_modes(connector, edid);
  62. kfree(edid);
  63. return ret;
  64. }
  65. static const struct drm_prop_enum_list force_audio_names[] = {
  66. { HDMI_AUDIO_OFF_DVI, "force-dvi" },
  67. { HDMI_AUDIO_OFF, "off" },
  68. { HDMI_AUDIO_AUTO, "auto" },
  69. { HDMI_AUDIO_ON, "on" },
  70. };
  71. void
  72. intel_attach_force_audio_property(struct drm_connector *connector)
  73. {
  74. struct drm_device *dev = connector->dev;
  75. struct drm_i915_private *dev_priv = dev->dev_private;
  76. struct drm_property *prop;
  77. prop = dev_priv->force_audio_property;
  78. if (prop == NULL) {
  79. prop = drm_property_create_enum(dev, 0,
  80. "audio",
  81. force_audio_names,
  82. ARRAY_SIZE(force_audio_names));
  83. if (prop == NULL)
  84. return;
  85. dev_priv->force_audio_property = prop;
  86. }
  87. drm_object_attach_property(&connector->base, prop, 0);
  88. }
  89. static const struct drm_prop_enum_list broadcast_rgb_names[] = {
  90. { INTEL_BROADCAST_RGB_AUTO, "Automatic" },
  91. { INTEL_BROADCAST_RGB_FULL, "Full" },
  92. { INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" },
  93. };
  94. void
  95. intel_attach_broadcast_rgb_property(struct drm_connector *connector)
  96. {
  97. struct drm_device *dev = connector->dev;
  98. struct drm_i915_private *dev_priv = dev->dev_private;
  99. struct drm_property *prop;
  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. dev_priv->broadcast_rgb_property = prop;
  109. }
  110. drm_object_attach_property(&connector->base, prop, 0);
  111. }
  112. void
  113. intel_attach_aspect_ratio_property(struct drm_connector *connector)
  114. {
  115. if (!drm_mode_create_aspect_ratio_property(connector->dev))
  116. drm_object_attach_property(&connector->base,
  117. connector->dev->mode_config.aspect_ratio_property,
  118. DRM_MODE_PICTURE_ASPECT_NONE);
  119. }