drm/i915/xelpd: Add rc_qp_table for rcparams calculation

Add the qp table for 444 formats, for 8bpc, 10bpc and 12bpc, as given by
the VESA C model for DSC 1.1

v2:
 - Add include guard to header (Jani)
 - Move the big tables to a .c file (Chris, Jani, Lucas)
v3:
 - Make tables 'static const' and add lookup functions to index into
   them.  (Jani)
v3.1:
 - Include missing .h file.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210519000625.3184321-3-lucas.demarchi@intel.com

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 2da5bae..6947495 100644 (file)
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -263,6 +263,7 @@ i915-y += \
        display/intel_lvds.o \
        display/intel_panel.o \
        display/intel_pps.o \
+       display/intel_qp_tables.o \
        display/intel_sdvo.o \
        display/intel_tv.o \
        display/intel_vdsc.o \

diff --git a/drivers/gpu/drm/i915/display/intel_qp_tables.c b/drivers/gpu/drm/i915/display/intel_qp_tables.c
new file mode 100644 (file)
index 0000000..c626a24
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_qp_tables.c
@@ -0,0 +1,309 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#include <drm/drm_dsc.h>
+
+#include "i915_utils.h"
+#include "intel_qp_tables.h"
+
+/* from BPP 6 to 24 in steps of 0.5 */
+#define RC_RANGE_QP444_8BPC_MAX_NUM_BPP                37
+
+/* from BPP 6 to 30 in steps of 0.5 */
+#define RC_RANGE_QP444_10BPC_MAX_NUM_BPP       49
+
+/* from BPP 6 to 36 in steps of 0.5 */
+#define RC_RANGE_QP444_12BPC_MAX_NUM_BPP       61
+
+/*
+ * These qp tables are as per the C model
+ * and it has the rows pointing to bpps which increment
+ * in steps of 0.5
+ * We do not support fractional bpps as of today,
+ * hence we would skip the fractional bpps during
+ * our references for qp calclulations.
+ */
+static const u8 rc_range_minqp444_8bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_8BPC_MAX_NUM_BPP] = {
+       { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1,
+         1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1,
+         1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 },
+       { 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1,
+         1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 },
+       { 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2,
+         2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 },
+       { 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2,
+         2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0 },
+       { 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+         3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0 },
+       { 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3,
+         3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
+       { 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4,
+         4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 0 },
+       { 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4,
+         4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 0 },
+       { 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5,
+         5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1 },
+       { 14, 14, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 9, 9, 9, 8, 8,
+         8, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3 }
+};
+
+static const u8 rc_range_maxqp444_8bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_8BPC_MAX_NUM_BPP] = {
+       { 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1,
+         1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 },
+       { 8, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1,
+         1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 },
+       { 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2,
+         2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
+       { 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2,
+         2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0 },
+       { 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3,
+         3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1 },
+       { 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3,
+         3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1 },
+       { 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 5, 5, 4, 4, 4, 4, 3,
+         3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1 },
+       { 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5,
+         4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1 },
+       { 12, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 6, 6, 5, 5, 5,
+         5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1 },
+       { 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 7, 7, 6, 6, 6,
+         5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1 },
+       { 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7,
+         6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1 },
+       { 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 8, 8, 8, 7, 7, 7,
+         6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1 },
+       { 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8,
+         8, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2 },
+       { 15, 15, 14, 14, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 10, 9,
+         9, 9, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4 }
+};
+
+static const u8 rc_range_minqp444_10bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_10BPC_MAX_NUM_BPP] = {
+       { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0 },
+       { 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1,
+         1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0 },
+       { 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2,
+         2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0 },
+       { 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3,
+         3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0 },
+       { 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3,
+         3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
+         0, 0, 0 },
+       { 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4,
+         4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 0, 0, 0,
+         0, 0, 0 },
+       { 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5,
+         4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 0, 0,
+         0, 0, 0 },
+       { 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5,
+         5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 0,
+         0, 0, 0 },
+       { 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5,
+         5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1,
+         1, 0, 0 },
+       { 10, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6,
+         6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1,
+         1, 1, 0 },
+       { 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6,
+         6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1,
+         1, 1, 1 },
+       { 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8,
+         7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2,
+         2, 1, 1, 1 },
+       { 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8,
+         8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2,
+         2, 2, 2, 1 },
+       { 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11,
+         11, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4,
+         4, 3, 3, 3, 3, 2, 2, 2, 2, 1 },
+       { 18, 18, 17, 17, 16, 16, 16, 16, 15, 15, 14, 14, 14, 14, 13, 13, 13,
+         12, 12, 12, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7,
+         7, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3 }
+};
+
+static const u8 rc_range_maxqp444_10bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_10BPC_MAX_NUM_BPP] = {
+       { 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2,
+         1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0 },
+       { 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3,
+         3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0 },
+       { 12, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 6, 5, 5, 5, 4,
+         4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
+         0, 0, 0, 0 },
+       { 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 7, 7, 6,
+         6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1,
+         1, 0, 0, 0, 0, 0, 0 },
+       { 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 8, 8, 7,
+         6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1,
+         1, 1, 1, 0, 0, 0, 0, 0 },
+       { 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 9, 8, 8,
+         7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2,
+         2, 2, 1, 1, 1, 1, 0, 0 },
+       { 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 8, 8,
+         7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2,
+         2, 2, 2, 1, 1, 1, 1, 1 },
+       { 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 9, 9,
+         8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3,
+         3, 2, 2, 2, 1, 1, 1, 1 },
+       { 15, 15, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 11, 10, 10, 9,
+         9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3,
+         3, 3, 2, 2, 2, 2, 1, 1 },
+       { 16, 15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 10,
+         10, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4,
+         4, 3, 3, 3, 2, 2, 2, 2, 1 },
+       { 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 12, 11, 11,
+         10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5,
+         4, 4, 4, 3, 3, 3, 2, 2, 2, 2 },
+       { 16, 16, 16, 15, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12,
+         11, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5,
+         5, 4, 4, 4, 4, 3, 3, 2, 2, 2 },
+       { 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 13, 12, 12, 12,
+         11, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5,
+         5, 4, 4, 4, 4, 3, 3, 3, 3, 2 },
+       { 17, 17, 17, 17, 16, 16, 15, 15, 15, 15, 14, 14, 14, 14, 13, 13, 12,
+         12, 12, 12, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 6, 6, 6,
+         6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2 },
+       { 19, 19, 18, 18, 17, 17, 17, 17, 16, 16, 15, 15, 15, 15, 14, 14, 14,
+         13, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8,
+         8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4 }
+};
+
+static const u8 rc_range_minqp444_12bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_12BPC_MAX_NUM_BPP] = {
+       { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+         1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 11, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3,
+         3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 6, 6, 6, 6, 5, 5, 5,
+         5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 8, 7, 7, 7,
+         7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1,
+         1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 8, 8,
+         8, 8, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2,
+         2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9,
+         9, 9, 9, 8, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3,
+         3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 },
+       { 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10,
+         10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4,
+         4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0 },
+       { 13, 13, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+         11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5,
+         5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0 },
+       { 14, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+         11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5,
+         5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 0 },
+       { 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12,
+         12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7,
+         6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1 },
+       { 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
+         13, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8,
+         7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1 },
+       { 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
+         13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8,
+         7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1 },
+       { 17, 17, 17, 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+         15, 14, 14, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8,
+         7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 1 },
+       { 22, 22, 21, 21, 20, 20, 20, 20, 19, 19, 18, 18, 18, 18, 17, 17, 17, 16, 16,
+         16, 15, 15, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 11,
+         10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 3 }
+};
+
+static const u8 rc_range_maxqp444_12bpc[DSC_NUM_BUF_RANGES][RC_RANGE_QP444_12BPC_MAX_NUM_BPP] = {
+       { 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 9, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4,
+         4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
+         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 14, 14, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 9, 9, 9, 8, 8, 7, 7, 7, 7, 5,
+         5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+         1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 16, 15, 15, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 11, 10, 10, 9, 9,
+         9, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1,
+         1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 12, 11, 11, 10,
+         10, 10, 8, 8, 8, 8, 8, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2,
+         2, 2, 2, 2, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
+       { 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 12, 12, 11, 10,
+         10, 10, 10, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3,
+         2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
+       { 17, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 12, 12, 11,
+         11, 11, 11, 9, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3,
+         3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 0 },
+       { 17, 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 13, 12, 12, 11,
+         11, 11, 11, 11, 10, 10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5,
+         5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 0 },
+       { 18, 18, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 14, 13, 13, 12,
+         12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6,
+         6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1 },
+       { 19, 19, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 13, 13,
+         13, 13, 13, 12, 12, 12, 12, 11, 11, 10, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6,
+         6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1 },
+       { 20, 19, 19, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 15, 14, 14, 13,
+         13, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7,
+         6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1 },
+       { 20, 20, 19, 19, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 14, 14,
+         14, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9,
+         8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2 },
+       { 20, 20, 20, 19, 19, 19, 18, 18, 18, 18, 17, 17, 17, 17, 16, 16, 16, 15, 15,
+         15, 14, 14, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9,
+         9, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2 },
+       { 20, 20, 20, 20, 19, 19, 19, 19, 19, 18, 18, 17, 17, 17, 16, 16, 16, 15, 15,
+         15, 14, 14, 13, 13, 13, 13, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9,
+         9, 8, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2 },
+       { 21, 21, 21, 21, 20, 20, 19, 19, 19, 19, 18, 18, 18, 18, 17, 17, 16, 16, 16,
+         16, 15, 15, 14, 14, 14, 14, 13, 13, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10,
+         9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2 },
+       { 23, 23, 22, 22, 21, 21, 21, 21, 20, 20, 19, 19, 19, 19, 18, 18, 18, 17, 17,
+         17, 16, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 12, 12, 12,
+         11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 4 }
+};
+
+#define PARAM_TABLE(_minmax, _bpc, _row, _col)  do { \
+       if (bpc == (_bpc)) \
+               return rc_range_##_minmax##qp444_##_bpc##bpc[_row][_col]; \
+} while (0)
+
+u8 intel_lookup_range_min_qp(int bpc, int buf_i, int bpp_i)
+{
+       PARAM_TABLE(min, 8, buf_i, bpp_i);
+       PARAM_TABLE(min, 10, buf_i, bpp_i);
+       PARAM_TABLE(min, 12, buf_i, bpp_i);
+
+       MISSING_CASE(bpc);
+       return 0;
+}
+
+u8 intel_lookup_range_max_qp(int bpc, int buf_i, int bpp_i)
+{
+       PARAM_TABLE(max, 8, buf_i, bpp_i);
+       PARAM_TABLE(max, 10, buf_i, bpp_i);
+       PARAM_TABLE(max, 12, buf_i, bpp_i);
+
+       MISSING_CASE(bpc);
+       return 0;
+}

diff --git a/drivers/gpu/drm/i915/display/intel_qp_tables.h b/drivers/gpu/drm/i915/display/intel_qp_tables.h
new file mode 100644 (file)
index 0000000..9fb3c36
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_qp_tables.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef _INTEL_QP_TABLES_H_
+#define _INTEL_QP_TABLES_H_
+
+#include <linux/types.h>
+
+u8 intel_lookup_range_min_qp(int bpc, int buf_i, int bpp_i);
+u8 intel_lookup_range_max_qp(int bpc, int buf_i, int bpp_i);
+
+#endif

diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c b/drivers/gpu/drm/i915/display/intel_vdsc.c
index 02e86d2..19cd953 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -11,6 +11,7 @@
 #include "intel_display_types.h"
 #include "intel_dsi.h"
 #include "intel_vdsc.h"
+#include "intel_qp_tables.h"
 
 enum ROW_INDEX_BPP {
        ROW_INDEX_6BPP = 0,
@@ -384,7 +385,7 @@ calculate_rc_params(struct rc_parameters *rc,
        int ofs_und12[] = { 2, 0, 0, -2, -4, -6, -8, -8, -8, -10, -10, -10, -12, -12, -12 };
        int ofs_und15[] = { 10, 8, 6, 4, 2, 0, -2, -4, -6, -8, -10, -10, -12, -12, -12 };
        int qp_bpc_modifier = (bpc - 8) * 2;
-       u32 res, buf_i;
+       u32 res, buf_i, bpp_i;
 
        if (vdsc_cfg->slice_height >= 8)
                rc->first_line_bpg_offset =
@@ -411,7 +412,14 @@ calculate_rc_params(struct rc_parameters *rc,
        rc->rc_quant_incr_limit0 = 11 + qp_bpc_modifier;
        rc->rc_quant_incr_limit1 = 11 + qp_bpc_modifier;
 
+       bpp_i  = (2 * (bpp - 6));
        for (buf_i = 0; buf_i < DSC_NUM_BUF_RANGES; buf_i++) {
+               /* Read range_minqp and range_max_qp from qp tables */
+               rc->rc_range_params[buf_i].range_min_qp =
+                       intel_lookup_range_min_qp(bpc, buf_i, bpp_i);
+               rc->rc_range_params[buf_i].range_max_qp =
+                       intel_lookup_range_max_qp(bpc, buf_i, bpp_i);
+
                /* Calculate range_bgp_offset */
                if (bpp <= 6) {
                        rc->rc_range_params[buf_i].range_bpg_offset = ofs_und6[buf_i];