[PATCH v2 1/2] drm/amd: Load DMCU IRAM
David Francis
David.Francis at amd.com
Tue Nov 13 19:42:33 UTC 2018
DMCU IRAM must be loaded by the driver before DMCU
can function.
Move the IRAM code out of the shadows and into a new file
modules/power/power_helpers.c
The IRAM table contains the backlight curve and ABM parameters
Add this new file to the Makefiles
Call dmcu_load_iram in late init of DM
Move struct dmcu_version from dc.h to dmcu.h to allow
dmcu to be included on its own
Signed-off-by: David Francis <David.Francis at amd.com>
---
drivers/gpu/drm/amd/display/Makefile | 3 +-
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 21 ++
drivers/gpu/drm/amd/display/dc/dc.h | 8 +-
drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h | 7 +
.../drm/amd/display/modules/power/Makefile | 31 ++
.../amd/display/modules/power/power_helpers.c | 326 ++++++++++++++++++
.../amd/display/modules/power/power_helpers.h | 47 +++
7 files changed, 435 insertions(+), 8 deletions(-)
create mode 100644 drivers/gpu/drm/amd/display/modules/power/Makefile
create mode 100644 drivers/gpu/drm/amd/display/modules/power/power_helpers.c
create mode 100644 drivers/gpu/drm/amd/display/modules/power/power_helpers.h
diff --git a/drivers/gpu/drm/amd/display/Makefile b/drivers/gpu/drm/amd/display/Makefile
index c97dc9613325..cfde1568c79a 100644
--- a/drivers/gpu/drm/amd/display/Makefile
+++ b/drivers/gpu/drm/amd/display/Makefile
@@ -32,11 +32,12 @@ subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/inc
subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/freesync
subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/color
subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/info_packet
+subdir-ccflags-y += -I$(FULL_AMD_DISPLAY_PATH)/modules/power
#TODO: remove when Timing Sync feature is complete
subdir-ccflags-y += -DBUILD_FEATURE_TIMING_SYNC=0
-DAL_LIBS = amdgpu_dm dc modules/freesync modules/color modules/info_packet
+DAL_LIBS = amdgpu_dm dc modules/freesync modules/color modules/info_packet modules/power
AMD_DAL = $(addsuffix /Makefile, $(addprefix $(FULL_AMD_DISPLAY_PATH)/,$(DAL_LIBS)))
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 0c1a533eb531..f71febb4210d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -72,6 +72,7 @@
#endif
#include "modules/inc/mod_freesync.h"
+#include "modules/power/power_helpers.h"
#define FIRMWARE_RAVEN_DMCU "amdgpu/raven_dmcu.bin"
MODULE_FIRMWARE(FIRMWARE_RAVEN_DMCU);
@@ -643,6 +644,26 @@ static int dm_late_init(void *handle)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ struct dmcu_iram_parameters params;
+ unsigned int linear_lut[16];
+ int i;
+ struct dmcu *dmcu = adev->dm.dc->res_pool->dmcu;
+ bool ret;
+
+ for (i = 0; i < 16; i++)
+ linear_lut[i] = 0xFFFF * i / 15;
+
+ params.set = 0;
+ params.backlight_ramping_start = 0xCCCC;
+ params.backlight_ramping_reduction = 0xCCCCCCCC;
+ params.backlight_lut_array_size = 16;
+ params.backlight_lut_array = linear_lut;
+
+ ret = dmcu_load_iram(dmcu, params);
+
+ if (!ret)
+ return -EINVAL;
+
return detect_mst_link_for_all_connectors(adev->ddev);
}
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 18865a76ea55..6b0988310138 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -36,6 +36,7 @@
#include "inc/hw_sequencer.h"
#include "inc/compressor.h"
+#include "inc/hw/dmcu.h"
#include "dml/display_mode_lib.h"
#define DC_VER "3.2.06"
@@ -47,13 +48,6 @@
/*******************************************************************************
* Display Core Interfaces
******************************************************************************/
-struct dmcu_version {
- unsigned int date;
- unsigned int month;
- unsigned int year;
- unsigned int interface_version;
-};
-
struct dc_versions {
const char *dc_ver;
struct dmcu_version dmcu_version;
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h
index 4550747fb61c..cb85eaa9857f 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dmcu.h
@@ -32,6 +32,13 @@ enum dmcu_state {
DMCU_RUNNING = 1
};
+struct dmcu_version {
+ unsigned int date;
+ unsigned int month;
+ unsigned int year;
+ unsigned int interface_version;
+};
+
struct dmcu {
struct dc_context *ctx;
const struct dmcu_funcs *funcs;
diff --git a/drivers/gpu/drm/amd/display/modules/power/Makefile b/drivers/gpu/drm/amd/display/modules/power/Makefile
new file mode 100644
index 000000000000..87851f892a52
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/power/Makefile
@@ -0,0 +1,31 @@
+#
+# Copyright 2017 Advanced Micro Devices, Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the "Software"),
+# to deal in the Software without restriction, including without limitation
+# the rights to use, copy, modify, merge, publish, distribute, sublicense,
+# and/or sell copies of the Software, and to permit persons to whom the
+# Software is furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+#
+#
+# Makefile for the 'power' sub-module of DAL.
+#
+
+MOD_POWER = power_helpers.o
+
+AMD_DAL_MOD_POWER = $(addprefix $(AMDDALPATH)/modules/power/,$(MOD_POWER))
+#$(info ************ DAL POWER MODULE MAKEFILE ************)
+
+AMD_DISPLAY_FILES += $(AMD_DAL_MOD_POWER)
\ No newline at end of file
diff --git a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c
new file mode 100644
index 000000000000..00f63b7dd32f
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c
@@ -0,0 +1,326 @@
+/* Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "power_helpers.h"
+#include "dc/inc/hw/dmcu.h"
+
+#define DIV_ROUNDUP(a, b) (((a)+((b)/2))/(b))
+
+/* Possible Min Reduction config from least aggressive to most aggressive
+ * 0 1 2 3 4 5 6 7 8 9 10 11 12
+ * 100 98.0 94.1 94.1 85.1 80.3 75.3 69.4 60.0 57.6 50.2 49.8 40.0 %
+ */
+static const unsigned char min_reduction_table[13] = {
+0xff, 0xfa, 0xf0, 0xf0, 0xd9, 0xcd, 0xc0, 0xb1, 0x99, 0x93, 0x80, 0x82, 0x66};
+
+/* Possible Max Reduction configs from least aggressive to most aggressive
+ * 0 1 2 3 4 5 6 7 8 9 10 11 12
+ * 96.1 89.8 85.1 80.3 69.4 64.7 64.7 50.2 39.6 30.2 30.2 30.2 19.6 %
+ */
+static const unsigned char max_reduction_table[13] = {
+0xf5, 0xe5, 0xd9, 0xcd, 0xb1, 0xa5, 0xa5, 0x80, 0x65, 0x4d, 0x4d, 0x4d, 0x32};
+
+/* Predefined ABM configuration sets. We may have different configuration sets
+ * in order to satisfy different power/quality requirements.
+ */
+static const unsigned char abm_config[abm_defines_max_config][abm_defines_max_level] = {
+/* ABM Level 1, ABM Level 2, ABM Level 3, ABM Level 4 */
+{ 2, 5, 7, 8 }, /* Default - Medium aggressiveness */
+{ 2, 5, 8, 11 }, /* Alt #1 - Increased aggressiveness */
+{ 0, 2, 4, 8 }, /* Alt #2 - Minimal aggressiveness */
+{ 3, 6, 10, 12 }, /* Alt #3 - Super aggressiveness */
+};
+
+#define NUM_AMBI_LEVEL 5
+#define NUM_AGGR_LEVEL 4
+#define NUM_POWER_FN_SEGS 8
+#define NUM_BL_CURVE_SEGS 16
+
+/* NOTE: iRAM is 256B in size */
+struct iram_table_v_2 {
+ /* flags */
+ uint16_t flags; /* 0x00 U16 */
+
+ /* parameters for ABM2.0 algorithm */
+ uint8_t min_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x02 U0.8 */
+ uint8_t max_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x16 U0.8 */
+ uint8_t bright_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x2a U2.6 */
+ uint8_t bright_neg_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x3e U2.6 */
+ uint8_t dark_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x52 U2.6 */
+ uint8_t dark_neg_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x66 U2.6 */
+ uint8_t iir_curve[NUM_AMBI_LEVEL]; /* 0x7a U0.8 */
+ uint8_t deviation_gain; /* 0x7f U0.8 */
+
+ /* parameters for crgb conversion */
+ uint16_t crgb_thresh[NUM_POWER_FN_SEGS]; /* 0x80 U3.13 */
+ uint16_t crgb_offset[NUM_POWER_FN_SEGS]; /* 0x90 U1.15 */
+ uint16_t crgb_slope[NUM_POWER_FN_SEGS]; /* 0xa0 U4.12 */
+
+ /* parameters for custom curve */
+ /* thresholds for brightness --> backlight */
+ uint16_t backlight_thresholds[NUM_BL_CURVE_SEGS]; /* 0xb0 U16.0 */
+ /* offsets for brightness --> backlight */
+ uint16_t backlight_offsets[NUM_BL_CURVE_SEGS]; /* 0xd0 U16.0 */
+
+ /* For reading PSR State directly from IRAM */
+ uint8_t psr_state; /* 0xf0 */
+ uint8_t dmcu_interface_version; /* 0xf1 */
+ uint8_t dmcu_date_version_year_b0; /* 0xf2 */
+ uint8_t dmcu_date_version_year_b1; /* 0xf3 */
+ uint8_t dmcu_date_version_month; /* 0xf4 */
+ uint8_t dmcu_date_version_day; /* 0xf5 */
+ uint8_t dmcu_state; /* 0xf6 */
+
+ uint16_t blRampReduction; /* 0xf7 */
+ uint16_t blRampStart; /* 0xf9 */
+ uint8_t dummy5; /* 0xfb */
+ uint8_t dummy6; /* 0xfc */
+ uint8_t dummy7; /* 0xfd */
+ uint8_t dummy8; /* 0xfe */
+ uint8_t dummy9; /* 0xff */
+};
+
+static uint16_t backlight_8_to_16(unsigned int backlight_8bit)
+{
+ return (uint16_t)(backlight_8bit * 0x101);
+}
+
+static void fill_backlight_transform_table(struct dmcu_iram_parameters params,
+ struct iram_table_v_2 *table)
+{
+ unsigned int i;
+ unsigned int num_entries = NUM_BL_CURVE_SEGS;
+ unsigned int query_input_8bit;
+ unsigned int query_output_8bit;
+ unsigned int lut_index;
+
+ table->backlight_thresholds[0] = 0;
+ table->backlight_offsets[0] = params.backlight_lut_array[0];
+ table->backlight_thresholds[num_entries-1] = 0xFFFF;
+ table->backlight_offsets[num_entries-1] =
+ params.backlight_lut_array[params.backlight_lut_array_size - 1];
+
+ /* Setup all brightness levels between 0% and 100% exclusive
+ * Fills brightness-to-backlight transform table. Backlight custom curve
+ * describes transform from brightness to backlight. It will be defined
+ * as set of thresholds and set of offsets, together, implying
+ * extrapolation of custom curve into 16 uniformly spanned linear
+ * segments. Each threshold/offset represented by 16 bit entry in
+ * format U4.10.
+ */
+ for (i = 1; i+1 < num_entries; i++) {
+ query_input_8bit = DIV_ROUNDUP((i * 256), num_entries);
+
+ lut_index = (params.backlight_lut_array_size - 1) * i / (num_entries - 1);
+ ASSERT(lut_index < params.backlight_lut_array_size);
+ query_output_8bit = params.backlight_lut_array[lut_index] >> 8;
+
+ table->backlight_thresholds[i] =
+ backlight_8_to_16(query_input_8bit);
+ table->backlight_offsets[i] =
+ backlight_8_to_16(query_output_8bit);
+ }
+}
+
+bool dmcu_load_iram(struct dmcu *dmcu,
+ struct dmcu_iram_parameters params)
+{
+ struct iram_table_v_2 ram_table;
+ unsigned int set = params.set;
+
+ if (dmcu == NULL)
+ return false;
+
+ if (!dmcu->funcs->is_dmcu_initialized(dmcu))
+ return true;
+
+ memset(&ram_table, 0, sizeof(ram_table));
+
+ ram_table.flags = 0x0;
+ ram_table.deviation_gain = 0xb3;
+
+ ram_table.blRampReduction =
+ cpu_to_be16(params.backlight_ramping_reduction);
+ ram_table.blRampStart =
+ cpu_to_be16(params.backlight_ramping_start);
+
+ ram_table.min_reduction[0][0] = min_reduction_table[abm_config[set][0]];
+ ram_table.min_reduction[1][0] = min_reduction_table[abm_config[set][0]];
+ ram_table.min_reduction[2][0] = min_reduction_table[abm_config[set][0]];
+ ram_table.min_reduction[3][0] = min_reduction_table[abm_config[set][0]];
+ ram_table.min_reduction[4][0] = min_reduction_table[abm_config[set][0]];
+ ram_table.max_reduction[0][0] = max_reduction_table[abm_config[set][0]];
+ ram_table.max_reduction[1][0] = max_reduction_table[abm_config[set][0]];
+ ram_table.max_reduction[2][0] = max_reduction_table[abm_config[set][0]];
+ ram_table.max_reduction[3][0] = max_reduction_table[abm_config[set][0]];
+ ram_table.max_reduction[4][0] = max_reduction_table[abm_config[set][0]];
+
+ ram_table.min_reduction[0][1] = min_reduction_table[abm_config[set][1]];
+ ram_table.min_reduction[1][1] = min_reduction_table[abm_config[set][1]];
+ ram_table.min_reduction[2][1] = min_reduction_table[abm_config[set][1]];
+ ram_table.min_reduction[3][1] = min_reduction_table[abm_config[set][1]];
+ ram_table.min_reduction[4][1] = min_reduction_table[abm_config[set][1]];
+ ram_table.max_reduction[0][1] = max_reduction_table[abm_config[set][1]];
+ ram_table.max_reduction[1][1] = max_reduction_table[abm_config[set][1]];
+ ram_table.max_reduction[2][1] = max_reduction_table[abm_config[set][1]];
+ ram_table.max_reduction[3][1] = max_reduction_table[abm_config[set][1]];
+ ram_table.max_reduction[4][1] = max_reduction_table[abm_config[set][1]];
+
+ ram_table.min_reduction[0][2] = min_reduction_table[abm_config[set][2]];
+ ram_table.min_reduction[1][2] = min_reduction_table[abm_config[set][2]];
+ ram_table.min_reduction[2][2] = min_reduction_table[abm_config[set][2]];
+ ram_table.min_reduction[3][2] = min_reduction_table[abm_config[set][2]];
+ ram_table.min_reduction[4][2] = min_reduction_table[abm_config[set][2]];
+ ram_table.max_reduction[0][2] = max_reduction_table[abm_config[set][2]];
+ ram_table.max_reduction[1][2] = max_reduction_table[abm_config[set][2]];
+ ram_table.max_reduction[2][2] = max_reduction_table[abm_config[set][2]];
+ ram_table.max_reduction[3][2] = max_reduction_table[abm_config[set][2]];
+ ram_table.max_reduction[4][2] = max_reduction_table[abm_config[set][2]];
+
+ ram_table.min_reduction[0][3] = min_reduction_table[abm_config[set][3]];
+ ram_table.min_reduction[1][3] = min_reduction_table[abm_config[set][3]];
+ ram_table.min_reduction[2][3] = min_reduction_table[abm_config[set][3]];
+ ram_table.min_reduction[3][3] = min_reduction_table[abm_config[set][3]];
+ ram_table.min_reduction[4][3] = min_reduction_table[abm_config[set][3]];
+ ram_table.max_reduction[0][3] = max_reduction_table[abm_config[set][3]];
+ ram_table.max_reduction[1][3] = max_reduction_table[abm_config[set][3]];
+ ram_table.max_reduction[2][3] = max_reduction_table[abm_config[set][3]];
+ ram_table.max_reduction[3][3] = max_reduction_table[abm_config[set][3]];
+ ram_table.max_reduction[4][3] = max_reduction_table[abm_config[set][3]];
+
+ ram_table.bright_pos_gain[0][0] = 0x20;
+ ram_table.bright_pos_gain[0][1] = 0x20;
+ ram_table.bright_pos_gain[0][2] = 0x20;
+ ram_table.bright_pos_gain[0][3] = 0x20;
+ ram_table.bright_pos_gain[1][0] = 0x20;
+ ram_table.bright_pos_gain[1][1] = 0x20;
+ ram_table.bright_pos_gain[1][2] = 0x20;
+ ram_table.bright_pos_gain[1][3] = 0x20;
+ ram_table.bright_pos_gain[2][0] = 0x20;
+ ram_table.bright_pos_gain[2][1] = 0x20;
+ ram_table.bright_pos_gain[2][2] = 0x20;
+ ram_table.bright_pos_gain[2][3] = 0x20;
+ ram_table.bright_pos_gain[3][0] = 0x20;
+ ram_table.bright_pos_gain[3][1] = 0x20;
+ ram_table.bright_pos_gain[3][2] = 0x20;
+ ram_table.bright_pos_gain[3][3] = 0x20;
+ ram_table.bright_pos_gain[4][0] = 0x20;
+ ram_table.bright_pos_gain[4][1] = 0x20;
+ ram_table.bright_pos_gain[4][2] = 0x20;
+ ram_table.bright_pos_gain[4][3] = 0x20;
+ ram_table.bright_neg_gain[0][1] = 0x00;
+ ram_table.bright_neg_gain[0][2] = 0x00;
+ ram_table.bright_neg_gain[0][3] = 0x00;
+ ram_table.bright_neg_gain[1][0] = 0x00;
+ ram_table.bright_neg_gain[1][1] = 0x00;
+ ram_table.bright_neg_gain[1][2] = 0x00;
+ ram_table.bright_neg_gain[1][3] = 0x00;
+ ram_table.bright_neg_gain[2][0] = 0x00;
+ ram_table.bright_neg_gain[2][1] = 0x00;
+ ram_table.bright_neg_gain[2][2] = 0x00;
+ ram_table.bright_neg_gain[2][3] = 0x00;
+ ram_table.bright_neg_gain[3][0] = 0x00;
+ ram_table.bright_neg_gain[3][1] = 0x00;
+ ram_table.bright_neg_gain[3][2] = 0x00;
+ ram_table.bright_neg_gain[3][3] = 0x00;
+ ram_table.bright_neg_gain[4][0] = 0x00;
+ ram_table.bright_neg_gain[4][1] = 0x00;
+ ram_table.bright_neg_gain[4][2] = 0x00;
+ ram_table.bright_neg_gain[4][3] = 0x00;
+ ram_table.dark_pos_gain[0][0] = 0x00;
+ ram_table.dark_pos_gain[0][1] = 0x00;
+ ram_table.dark_pos_gain[0][2] = 0x00;
+ ram_table.dark_pos_gain[0][3] = 0x00;
+ ram_table.dark_pos_gain[1][0] = 0x00;
+ ram_table.dark_pos_gain[1][1] = 0x00;
+ ram_table.dark_pos_gain[1][2] = 0x00;
+ ram_table.dark_pos_gain[1][3] = 0x00;
+ ram_table.dark_pos_gain[2][0] = 0x00;
+ ram_table.dark_pos_gain[2][1] = 0x00;
+ ram_table.dark_pos_gain[2][2] = 0x00;
+ ram_table.dark_pos_gain[2][3] = 0x00;
+ ram_table.dark_pos_gain[3][0] = 0x00;
+ ram_table.dark_pos_gain[3][1] = 0x00;
+ ram_table.dark_pos_gain[3][2] = 0x00;
+ ram_table.dark_pos_gain[3][3] = 0x00;
+ ram_table.dark_pos_gain[4][0] = 0x00;
+ ram_table.dark_pos_gain[4][1] = 0x00;
+ ram_table.dark_pos_gain[4][2] = 0x00;
+ ram_table.dark_pos_gain[4][3] = 0x00;
+ ram_table.dark_neg_gain[0][0] = 0x00;
+ ram_table.dark_neg_gain[0][1] = 0x00;
+ ram_table.dark_neg_gain[0][2] = 0x00;
+ ram_table.dark_neg_gain[0][3] = 0x00;
+ ram_table.dark_neg_gain[1][0] = 0x00;
+ ram_table.dark_neg_gain[1][1] = 0x00;
+ ram_table.dark_neg_gain[1][2] = 0x00;
+ ram_table.dark_neg_gain[1][3] = 0x00;
+ ram_table.dark_neg_gain[2][0] = 0x00;
+ ram_table.dark_neg_gain[2][1] = 0x00;
+ ram_table.dark_neg_gain[2][2] = 0x00;
+ ram_table.dark_neg_gain[2][3] = 0x00;
+ ram_table.dark_neg_gain[3][0] = 0x00;
+ ram_table.dark_neg_gain[3][1] = 0x00;
+ ram_table.dark_neg_gain[3][2] = 0x00;
+ ram_table.dark_neg_gain[3][3] = 0x00;
+ ram_table.dark_neg_gain[4][0] = 0x00;
+ ram_table.dark_neg_gain[4][1] = 0x00;
+ ram_table.dark_neg_gain[4][2] = 0x00;
+ ram_table.dark_neg_gain[4][3] = 0x00;
+ ram_table.iir_curve[0] = 0x65;
+ ram_table.iir_curve[1] = 0x65;
+ ram_table.iir_curve[2] = 0x65;
+ ram_table.iir_curve[3] = 0x65;
+ ram_table.iir_curve[4] = 0x65;
+ ram_table.crgb_thresh[0] = cpu_to_be16(0x13b6);
+ ram_table.crgb_thresh[1] = cpu_to_be16(0x1648);
+ ram_table.crgb_thresh[2] = cpu_to_be16(0x18e3);
+ ram_table.crgb_thresh[3] = cpu_to_be16(0x1b41);
+ ram_table.crgb_thresh[4] = cpu_to_be16(0x1d46);
+ ram_table.crgb_thresh[5] = cpu_to_be16(0x1f21);
+ ram_table.crgb_thresh[6] = cpu_to_be16(0x2167);
+ ram_table.crgb_thresh[7] = cpu_to_be16(0x2384);
+ ram_table.crgb_offset[0] = cpu_to_be16(0x2999);
+ ram_table.crgb_offset[1] = cpu_to_be16(0x3999);
+ ram_table.crgb_offset[2] = cpu_to_be16(0x4666);
+ ram_table.crgb_offset[3] = cpu_to_be16(0x5999);
+ ram_table.crgb_offset[4] = cpu_to_be16(0x6333);
+ ram_table.crgb_offset[5] = cpu_to_be16(0x7800);
+ ram_table.crgb_offset[6] = cpu_to_be16(0x8c00);
+ ram_table.crgb_offset[7] = cpu_to_be16(0xa000);
+ ram_table.crgb_slope[0] = cpu_to_be16(0x3147);
+ ram_table.crgb_slope[1] = cpu_to_be16(0x2978);
+ ram_table.crgb_slope[2] = cpu_to_be16(0x23a2);
+ ram_table.crgb_slope[3] = cpu_to_be16(0x1f55);
+ ram_table.crgb_slope[4] = cpu_to_be16(0x1c63);
+ ram_table.crgb_slope[5] = cpu_to_be16(0x1a0f);
+ ram_table.crgb_slope[6] = cpu_to_be16(0x178d);
+ ram_table.crgb_slope[7] = cpu_to_be16(0x15ab);
+
+ fill_backlight_transform_table(
+ params, &ram_table);
+
+ return dmcu->funcs->load_iram(
+ dmcu, 0, (char *)(&ram_table), sizeof(ram_table));
+}
diff --git a/drivers/gpu/drm/amd/display/modules/power/power_helpers.h b/drivers/gpu/drm/amd/display/modules/power/power_helpers.h
new file mode 100644
index 000000000000..da5df00fedce
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.h
@@ -0,0 +1,47 @@
+/* Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#ifndef MODULES_POWER_POWER_HELPERS_H_
+#define MODULES_POWER_POWER_HELPERS_H_
+
+#include "dc/inc/hw/dmcu.h"
+
+
+enum abm_defines {
+ abm_defines_max_level = 4,
+ abm_defines_max_config = 4,
+};
+
+struct dmcu_iram_parameters {
+ unsigned int *backlight_lut_array;
+ unsigned int backlight_lut_array_size;
+ unsigned int backlight_ramping_reduction;
+ unsigned int backlight_ramping_start;
+ unsigned int set;
+};
+
+bool dmcu_load_iram(struct dmcu *dmcu,
+ struct dmcu_iram_parameters params);
+
+#endif /* MODULES_POWER_POWER_HELPERS_H_ */
--
2.17.1
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