From: "Srivatsa, Anusha" <anusha.srivatsa@xxxxxxxxx>
DSC has some Rate Control values that remain constant
across all configurations. These are as per the DSC
standard.
v3:
* Define them in drm_dsc.h as they are
DSC constants (Manasi)
v2:
* Add DP_DSC_ prefix (Jani Nikula)
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Gaurav K Singh <gaurav.k.singh@xxxxxxxxx>
Cc: Harry Wentland <harry.wentland@xxxxxxx>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
Reviewed-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>
---
include/drm/drm_dsc.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/drm/drm_dsc.h b/include/drm/drm_dsc.h
index 3292dfed9d0a..b88e31bd9da7 100644
--- a/include/drm/drm_dsc.h
+++ b/include/drm/drm_dsc.h
@@ -18,6 +18,12 @@
#define DSC_SCALE_DECREMENT_INTERVAL_MAX 4095
#define DSC_RANGE_BPG_OFFSET_MASK 0x3f
+/* DSC Rate Control Constants */
+#define DSC_RC_MODEL_SIZE_CONST 8192
+#define DSC_RC_EDGE_FACTOR_CONST 6
+#define DSC_RC_TGT_OFFSET_HI_CONST 3
+#define DSC_RC_TGT_OFFSET_LO_CONST 3
+
/* Configuration for a single Rate Control model range */
struct drm_dsc_rc_range_parameters {
/* Min Quantization Parameters allowed for this range */
--
2.19.1
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