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path: root/drivers/radeon/README
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-rw-r--r--drivers/radeon/README12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/radeon/README b/drivers/radeon/README
index 5cfaaa3314..6746f14901 100644
--- a/drivers/radeon/README
+++ b/drivers/radeon/README
@@ -65,9 +65,15 @@ cat /dev/radeon_vid
List of parameters:
~~~~~~~~~~~~~~~~~~~
if you have rage128 chip:
-brightness=decval (-64:+63) doesn't work on radeons
-saturation=decval (0:+31) doesn't work on radeons
-endif
+brightness=decval (-64:+63) changes brightness
+saturation=decval (0:+31) changes saturation 0 == grayscaled mode
+else - if you have radeon:
+brightness=decval (-1000:+1000) -1000 == black screen
+saturation=decval (-1000:+1000) -1000 == grayscaled mode
+contrast=decval (-1000:+1000) -1000 == black screen
+hue=decval (-1000:+1000) -1000 == +1000 (full circle)
+ all other values are within this range
+Note: 0 is default value for every parameter on radeons
double_buff=on/off enables/disables double buffering
deinterlace=on/off enables/disables adaprive deinterlacing