drm/dsc: Define the DSC 1.1 and 1.2 Line Buffer depth constants

DSC specification defines linebuf_depth which contains the
line buffer bit depth used to generate the bitstream.
These values are defined as per Table 4.1 in DSC 1.2 spec

v2 (From Manasi):
* Rename as MAX_LINEBUF_DEPTH for DSC 1.1 and DSC 1.2

Cc: dri-devel@lists.freedesktop.org
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Gaurav K Singh <gaurav.k.singh@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Acked-by: Sean Paul <seanpaul@chromium.org> (For merging through
drm-intel)
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181127214125.17658-6-manasi.d.navare@intel.com

diff --git a/include/drm/drm_dsc.h b/include/drm/drm_dsc.h
index 52e57ce..d03f1b8 100644 (file)
--- a/include/drm/drm_dsc.h
+++ b/include/drm/drm_dsc.h
@@ -40,6 +40,9 @@
 #define DSC_PPS_RC_RANGE_MINQP_SHIFT           11
 #define DSC_PPS_RC_RANGE_MAXQP_SHIFT           6
 #define DSC_PPS_NATIVE_420_SHIFT               1
+#define DSC_1_2_MAX_LINEBUF_DEPTH_BITS         16
+#define DSC_1_2_MAX_LINEBUF_DEPTH_VAL          0
+#define DSC_1_1_MAX_LINEBUF_DEPTH_BITS         13
 
 /* Configuration for a single Rate Control model range */
 struct drm_dsc_rc_range_parameters {