drm/i915: avoid full modeset when changing the color range properties
Automatic color range selection was added in
commit 55bc60db5988c8366751d3d04dd690698a53412c
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Thu Jan 17 16:31:29 2013 +0200
drm/i915: Add "Automatic" mode for the "Broadcast RGB" property
but that removed the check to avoid a full modeset if the value is
unchanged. Unfortunately X sets all properties with their current
value at start-up, resulting in some ugly flickering which shouldn't
be there.
v2: Change old_range from bool to uint32_t, spotted by Ville.
v3: Actually git add everything ;-)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 89f89b7..fc3bd9b 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2428,6 +2428,9 @@
}
if (property == dev_priv->broadcast_rgb_property) {
+ bool old_auto = intel_dp->color_range_auto;
+ uint32_t old_range = intel_dp->color_range;
+
switch (val) {
case INTEL_BROADCAST_RGB_AUTO:
intel_dp->color_range_auto = true;
@@ -2443,6 +2446,11 @@
default:
return -EINVAL;
}
+
+ if (old_auto == intel_dp->color_range_auto &&
+ old_range == intel_dp->color_range)
+ return 0;
+
goto done;
}
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 3e6a3ef..a905793 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -920,6 +920,9 @@
}
if (property == dev_priv->broadcast_rgb_property) {
+ bool old_auto = intel_hdmi->color_range_auto;
+ uint32_t old_range = intel_hdmi->color_range;
+
switch (val) {
case INTEL_BROADCAST_RGB_AUTO:
intel_hdmi->color_range_auto = true;
@@ -935,6 +938,11 @@
default:
return -EINVAL;
}
+
+ if (old_auto == intel_hdmi->color_range_auto &&
+ old_range == intel_hdmi->color_range)
+ return 0;
+
goto done;
}
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index a618a6a..d154284 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1930,6 +1930,9 @@
}
if (property == dev_priv->broadcast_rgb_property) {
+ bool old_auto = intel_sdvo->color_range_auto;
+ uint32_t old_range = intel_sdvo->color_range;
+
switch (val) {
case INTEL_BROADCAST_RGB_AUTO:
intel_sdvo->color_range_auto = true;
@@ -1947,6 +1950,11 @@
default:
return -EINVAL;
}
+
+ if (old_auto == intel_sdvo->color_range_auto &&
+ old_range == intel_sdvo->color_range)
+ return 0;
+
goto done;
}