From e953fd7bb32f55309a96abd5ceba9cf68d221434 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 21 Feb 2011 22:23:52 +0000 Subject: 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 --- drivers/gpu/drm/i915/intel_hdmi.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers/gpu/drm/i915/intel_hdmi.c') diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index c635c9e357b9..f289b8642976 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -41,6 +41,7 @@ struct intel_hdmi { struct intel_encoder base; u32 sdvox_reg; int ddc_bus; + uint32_t color_range; bool has_hdmi_sink; bool has_audio; int force_audio; @@ -124,6 +125,7 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder, u32 sdvox; sdvox = SDVO_ENCODING_HDMI | SDVO_BORDER_ENABLE; + sdvox |= intel_hdmi->color_range; if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) sdvox |= SDVO_VSYNC_ACTIVE_HIGH; if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) @@ -278,6 +280,7 @@ intel_hdmi_set_property(struct drm_connector *connector, uint64_t val) { struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector); + struct drm_i915_private *dev_priv = connector->dev->dev_private; int ret; ret = drm_connector_property_set_value(connector, property, val); @@ -305,6 +308,14 @@ intel_hdmi_set_property(struct drm_connector *connector, goto done; } + if (property == dev_priv->broadcast_rgb_property) { + if (val == !!intel_hdmi->color_range) + return 0; + + intel_hdmi->color_range = val ? SDVO_COLOR_RANGE_16_235 : 0; + goto done; + } + return -EINVAL; done: @@ -363,6 +374,8 @@ intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *c intel_hdmi->force_audio_property->values[1] = 1; drm_connector_attach_property(connector, intel_hdmi->force_audio_property, 0); } + + intel_attach_broadcast_rgb_property(connector); } void intel_hdmi_init(struct drm_device *dev, int sdvox_reg) -- cgit v1.2.1