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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-02-22 01:23:52 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-02-22 18:56:56 +0300 |
| commit | e953fd7bb32f55309a96abd5ceba9cf68d221434 (patch) | |
| tree | 67110619366878f6412405ab63b7525f1c627544 /drivers/gpu/drm/i915/intel_modes.c | |
| parent | ce453d81cb0397aa7d5148984f51907e14072d74 (diff) | |
| download | linux-e953fd7bb32f55309a96abd5ceba9cf68d221434.tar.xz | |
drm/i915: Add support for limited color range of broadcast outputs
In order to prevent "crushed blacks" on TVs, the range of the RGB output
may be limited to 16-235. This used to be available through Xorg under
the "Broadcast RGB" option, so reintroduce support for KMS.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=34543
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_modes.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_modes.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c index f70b7cf32bff..9034dd8f33c7 100644 --- a/drivers/gpu/drm/i915/intel_modes.c +++ b/drivers/gpu/drm/i915/intel_modes.c @@ -80,3 +80,33 @@ int intel_ddc_get_modes(struct drm_connector *connector, return ret; } + +static const char *broadcast_rgb_names[] = { + "Full", + "Limited 16:235", +}; + +void +intel_attach_broadcast_rgb_property(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_property *prop; + int i; + + prop = dev_priv->broadcast_rgb_property; + if (prop == NULL) { + prop = drm_property_create(dev, DRM_MODE_PROP_ENUM, + "Broadcast RGB", + ARRAY_SIZE(broadcast_rgb_names)); + if (prop == NULL) + return; + + for (i = 0; i < ARRAY_SIZE(broadcast_rgb_names); i++) + drm_property_add_enum(prop, i, i, broadcast_rgb_names[i]); + + dev_priv->broadcast_rgb_property = prop; + } + + drm_connector_attach_property(connector, prop, 0); +} |