Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 4304 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/modules/color/Makefile b/drivers/gpu/drm/amd/display/modules/color/Makefile
new file mode 100644
index 000000000..65c33a769
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/color/Makefile
@@ -0,0 +1,31 @@
+#
+# 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.
+#
+#
+# Makefile for the color sub-module of DAL.
+#
+
+MOD_COLOR = color_gamma.o
+
+AMD_DAL_MOD_COLOR = $(addprefix $(AMDDALPATH)/modules/color/,$(MOD_COLOR))
+#$(info ************  DAL COLOR MODULE MAKEFILE ************)
+
+AMD_DISPLAY_FILES += $(AMD_DAL_MOD_COLOR)
diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
new file mode 100644
index 000000000..11ea1a0e6
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c
@@ -0,0 +1,1840 @@
+/*
+ * Copyright 2016 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 "dc.h"
+#include "opp.h"
+#include "color_gamma.h"
+
+
+#define NUM_PTS_IN_REGION 16
+#define NUM_REGIONS 32
+#define MAX_HW_POINTS (NUM_PTS_IN_REGION*NUM_REGIONS)
+
+static struct hw_x_point coordinates_x[MAX_HW_POINTS + 2];
+
+static struct fixed31_32 pq_table[MAX_HW_POINTS + 2];
+static struct fixed31_32 de_pq_table[MAX_HW_POINTS + 2];
+
+static bool pq_initialized; /* = false; */
+static bool de_pq_initialized; /* = false; */
+
+/* one-time setup of X points */
+void setup_x_points_distribution(void)
+{
+	struct fixed31_32 region_size = dc_fixpt_from_int(128);
+	int32_t segment;
+	uint32_t seg_offset;
+	uint32_t index;
+	struct fixed31_32 increment;
+
+	coordinates_x[MAX_HW_POINTS].x = region_size;
+	coordinates_x[MAX_HW_POINTS + 1].x = region_size;
+
+	for (segment = 6; segment > (6 - NUM_REGIONS); segment--) {
+		region_size = dc_fixpt_div_int(region_size, 2);
+		increment = dc_fixpt_div_int(region_size,
+						NUM_PTS_IN_REGION);
+		seg_offset = (segment + (NUM_REGIONS - 7)) * NUM_PTS_IN_REGION;
+		coordinates_x[seg_offset].x = region_size;
+
+		for (index = seg_offset + 1;
+				index < seg_offset + NUM_PTS_IN_REGION;
+				index++) {
+			coordinates_x[index].x = dc_fixpt_add
+					(coordinates_x[index-1].x, increment);
+		}
+	}
+}
+
+static void compute_pq(struct fixed31_32 in_x, struct fixed31_32 *out_y)
+{
+	/* consts for PQ gamma formula. */
+	const struct fixed31_32 m1 =
+		dc_fixpt_from_fraction(159301758, 1000000000);
+	const struct fixed31_32 m2 =
+		dc_fixpt_from_fraction(7884375, 100000);
+	const struct fixed31_32 c1 =
+		dc_fixpt_from_fraction(8359375, 10000000);
+	const struct fixed31_32 c2 =
+		dc_fixpt_from_fraction(188515625, 10000000);
+	const struct fixed31_32 c3 =
+		dc_fixpt_from_fraction(186875, 10000);
+
+	struct fixed31_32 l_pow_m1;
+	struct fixed31_32 base;
+
+	if (dc_fixpt_lt(in_x, dc_fixpt_zero))
+		in_x = dc_fixpt_zero;
+
+	l_pow_m1 = dc_fixpt_pow(in_x, m1);
+	base = dc_fixpt_div(
+			dc_fixpt_add(c1,
+					(dc_fixpt_mul(c2, l_pow_m1))),
+			dc_fixpt_add(dc_fixpt_one,
+					(dc_fixpt_mul(c3, l_pow_m1))));
+	*out_y = dc_fixpt_pow(base, m2);
+}
+
+static void compute_de_pq(struct fixed31_32 in_x, struct fixed31_32 *out_y)
+{
+	/* consts for dePQ gamma formula. */
+	const struct fixed31_32 m1 =
+		dc_fixpt_from_fraction(159301758, 1000000000);
+	const struct fixed31_32 m2 =
+		dc_fixpt_from_fraction(7884375, 100000);
+	const struct fixed31_32 c1 =
+		dc_fixpt_from_fraction(8359375, 10000000);
+	const struct fixed31_32 c2 =
+		dc_fixpt_from_fraction(188515625, 10000000);
+	const struct fixed31_32 c3 =
+		dc_fixpt_from_fraction(186875, 10000);
+
+	struct fixed31_32 l_pow_m1;
+	struct fixed31_32 base, div;
+
+
+	if (dc_fixpt_lt(in_x, dc_fixpt_zero))
+		in_x = dc_fixpt_zero;
+
+	l_pow_m1 = dc_fixpt_pow(in_x,
+			dc_fixpt_div(dc_fixpt_one, m2));
+	base = dc_fixpt_sub(l_pow_m1, c1);
+
+	if (dc_fixpt_lt(base, dc_fixpt_zero))
+		base = dc_fixpt_zero;
+
+	div = dc_fixpt_sub(c2, dc_fixpt_mul(c3, l_pow_m1));
+
+	*out_y = dc_fixpt_pow(dc_fixpt_div(base, div),
+			dc_fixpt_div(dc_fixpt_one, m1));
+
+}
+
+/*de gamma, none linear to linear*/
+static void compute_hlg_oetf(struct fixed31_32 in_x, bool is_light0_12, struct fixed31_32 *out_y)
+{
+	struct fixed31_32 a;
+	struct fixed31_32 b;
+	struct fixed31_32 c;
+	struct fixed31_32 threshold;
+	struct fixed31_32 reference_white_level;
+
+	a = dc_fixpt_from_fraction(17883277, 100000000);
+	if (is_light0_12) {
+		/*light 0-12*/
+		b = dc_fixpt_from_fraction(28466892, 100000000);
+		c = dc_fixpt_from_fraction(55991073, 100000000);
+		threshold = dc_fixpt_one;
+		reference_white_level = dc_fixpt_half;
+	} else {
+		/*light 0-1*/
+		b = dc_fixpt_from_fraction(2372241, 100000000);
+		c = dc_fixpt_add(dc_fixpt_one, dc_fixpt_from_fraction(429347, 100000000));
+		threshold = dc_fixpt_from_fraction(1, 12);
+		reference_white_level = dc_fixpt_pow(dc_fixpt_from_fraction(3, 1), dc_fixpt_half);
+	}
+	if (dc_fixpt_lt(threshold, in_x))
+		*out_y = dc_fixpt_add(c, dc_fixpt_mul(a, dc_fixpt_log(dc_fixpt_sub(in_x, b))));
+	else
+		*out_y = dc_fixpt_mul(dc_fixpt_pow(in_x, dc_fixpt_half), reference_white_level);
+}
+
+/*re gamma, linear to none linear*/
+static void compute_hlg_eotf(struct fixed31_32 in_x, bool is_light0_12, struct fixed31_32 *out_y)
+{
+	struct fixed31_32 a;
+	struct fixed31_32 b;
+	struct fixed31_32 c;
+	struct fixed31_32 reference_white_level;
+
+	a = dc_fixpt_from_fraction(17883277, 100000000);
+	if (is_light0_12) {
+		/*light 0-12*/
+		b = dc_fixpt_from_fraction(28466892, 100000000);
+		c = dc_fixpt_from_fraction(55991073, 100000000);
+		reference_white_level = dc_fixpt_from_fraction(4, 1);
+	} else {
+		/*light 0-1*/
+		b = dc_fixpt_from_fraction(2372241, 100000000);
+		c = dc_fixpt_add(dc_fixpt_one, dc_fixpt_from_fraction(429347, 100000000));
+		reference_white_level = dc_fixpt_from_fraction(1, 3);
+	}
+	if (dc_fixpt_lt(dc_fixpt_half, in_x))
+		*out_y = dc_fixpt_add(dc_fixpt_exp(dc_fixpt_div(dc_fixpt_sub(in_x, c), a)), b);
+	else
+		*out_y = dc_fixpt_mul(dc_fixpt_pow(in_x, dc_fixpt_from_fraction(2, 1)), reference_white_level);
+}
+
+
+/* one-time pre-compute PQ values - only for sdr_white_level 80 */
+void precompute_pq(void)
+{
+	int i;
+	struct fixed31_32 x;
+	const struct hw_x_point *coord_x = coordinates_x + 32;
+	struct fixed31_32 scaling_factor =
+			dc_fixpt_from_fraction(80, 10000);
+
+	/* pow function has problems with arguments too small */
+	for (i = 0; i < 32; i++)
+		pq_table[i] = dc_fixpt_zero;
+
+	for (i = 32; i <= MAX_HW_POINTS; i++) {
+		x = dc_fixpt_mul(coord_x->x, scaling_factor);
+		compute_pq(x, &pq_table[i]);
+		++coord_x;
+	}
+}
+
+/* one-time pre-compute dePQ values - only for max pixel value 125 FP16 */
+void precompute_de_pq(void)
+{
+	int i;
+	struct fixed31_32  y;
+	uint32_t begin_index, end_index;
+
+	struct fixed31_32 scaling_factor = dc_fixpt_from_int(125);
+
+	/* X points is 2^-25 to 2^7
+	 * De-gamma X is 2^-12 to 2^0 – we are skipping first -12-(-25) = 13 regions
+	 */
+	begin_index = 13 * NUM_PTS_IN_REGION;
+	end_index = begin_index + 12 * NUM_PTS_IN_REGION;
+
+	for (i = 0; i <= begin_index; i++)
+		de_pq_table[i] = dc_fixpt_zero;
+
+	for (; i <= end_index; i++) {
+		compute_de_pq(coordinates_x[i].x, &y);
+		de_pq_table[i] = dc_fixpt_mul(y, scaling_factor);
+	}
+
+	for (; i <= MAX_HW_POINTS; i++)
+		de_pq_table[i] = de_pq_table[i-1];
+}
+struct dividers {
+	struct fixed31_32 divider1;
+	struct fixed31_32 divider2;
+	struct fixed31_32 divider3;
+};
+
+static void build_coefficients(struct gamma_coefficients *coefficients, bool is_2_4)
+{
+	static const int32_t numerator01[] = { 31308, 180000};
+	static const int32_t numerator02[] = { 12920, 4500};
+	static const int32_t numerator03[] = { 55, 99};
+	static const int32_t numerator04[] = { 55, 99};
+	static const int32_t numerator05[] = { 2400, 2200};
+
+	uint32_t i = 0;
+	uint32_t index = is_2_4 == true ? 0:1;
+
+	do {
+		coefficients->a0[i] = dc_fixpt_from_fraction(
+			numerator01[index], 10000000);
+		coefficients->a1[i] = dc_fixpt_from_fraction(
+			numerator02[index], 1000);
+		coefficients->a2[i] = dc_fixpt_from_fraction(
+			numerator03[index], 1000);
+		coefficients->a3[i] = dc_fixpt_from_fraction(
+			numerator04[index], 1000);
+		coefficients->user_gamma[i] = dc_fixpt_from_fraction(
+			numerator05[index], 1000);
+
+		++i;
+	} while (i != ARRAY_SIZE(coefficients->a0));
+}
+
+static struct fixed31_32 translate_from_linear_space(
+	struct fixed31_32 arg,
+	struct fixed31_32 a0,
+	struct fixed31_32 a1,
+	struct fixed31_32 a2,
+	struct fixed31_32 a3,
+	struct fixed31_32 gamma)
+{
+	const struct fixed31_32 one = dc_fixpt_from_int(1);
+
+	if (dc_fixpt_lt(one, arg))
+		return one;
+
+	if (dc_fixpt_le(arg, dc_fixpt_neg(a0)))
+		return dc_fixpt_sub(
+			a2,
+			dc_fixpt_mul(
+				dc_fixpt_add(
+					one,
+					a3),
+				dc_fixpt_pow(
+					dc_fixpt_neg(arg),
+					dc_fixpt_recip(gamma))));
+	else if (dc_fixpt_le(a0, arg))
+		return dc_fixpt_sub(
+			dc_fixpt_mul(
+				dc_fixpt_add(
+					one,
+					a3),
+				dc_fixpt_pow(
+					arg,
+					dc_fixpt_recip(gamma))),
+			a2);
+	else
+		return dc_fixpt_mul(
+			arg,
+			a1);
+}
+
+static struct fixed31_32 translate_to_linear_space(
+	struct fixed31_32 arg,
+	struct fixed31_32 a0,
+	struct fixed31_32 a1,
+	struct fixed31_32 a2,
+	struct fixed31_32 a3,
+	struct fixed31_32 gamma)
+{
+	struct fixed31_32 linear;
+
+	a0 = dc_fixpt_mul(a0, a1);
+	if (dc_fixpt_le(arg, dc_fixpt_neg(a0)))
+
+		linear = dc_fixpt_neg(
+				 dc_fixpt_pow(
+				 dc_fixpt_div(
+				 dc_fixpt_sub(a2, arg),
+				 dc_fixpt_add(
+				 dc_fixpt_one, a3)), gamma));
+
+	else if (dc_fixpt_le(dc_fixpt_neg(a0), arg) &&
+			 dc_fixpt_le(arg, a0))
+		linear = dc_fixpt_div(arg, a1);
+	else
+		linear =  dc_fixpt_pow(
+					dc_fixpt_div(
+					dc_fixpt_add(a2, arg),
+					dc_fixpt_add(
+					dc_fixpt_one, a3)), gamma);
+
+	return linear;
+}
+
+static inline struct fixed31_32 translate_from_linear_space_ex(
+	struct fixed31_32 arg,
+	struct gamma_coefficients *coeff,
+	uint32_t color_index)
+{
+	return translate_from_linear_space(
+		arg,
+		coeff->a0[color_index],
+		coeff->a1[color_index],
+		coeff->a2[color_index],
+		coeff->a3[color_index],
+		coeff->user_gamma[color_index]);
+}
+
+
+static inline struct fixed31_32 translate_to_linear_space_ex(
+	struct fixed31_32 arg,
+	struct gamma_coefficients *coeff,
+	uint32_t color_index)
+{
+	return translate_to_linear_space(
+		arg,
+		coeff->a0[color_index],
+		coeff->a1[color_index],
+		coeff->a2[color_index],
+		coeff->a3[color_index],
+		coeff->user_gamma[color_index]);
+}
+
+
+static bool find_software_points(
+	const struct dc_gamma *ramp,
+	const struct gamma_pixel *axis_x,
+	struct fixed31_32 hw_point,
+	enum channel_name channel,
+	uint32_t *index_to_start,
+	uint32_t *index_left,
+	uint32_t *index_right,
+	enum hw_point_position *pos)
+{
+	const uint32_t max_number = ramp->num_entries + 3;
+
+	struct fixed31_32 left, right;
+
+	uint32_t i = *index_to_start;
+
+	while (i < max_number) {
+		if (channel == CHANNEL_NAME_RED) {
+			left = axis_x[i].r;
+
+			if (i < max_number - 1)
+				right = axis_x[i + 1].r;
+			else
+				right = axis_x[max_number - 1].r;
+		} else if (channel == CHANNEL_NAME_GREEN) {
+			left = axis_x[i].g;
+
+			if (i < max_number - 1)
+				right = axis_x[i + 1].g;
+			else
+				right = axis_x[max_number - 1].g;
+		} else {
+			left = axis_x[i].b;
+
+			if (i < max_number - 1)
+				right = axis_x[i + 1].b;
+			else
+				right = axis_x[max_number - 1].b;
+		}
+
+		if (dc_fixpt_le(left, hw_point) &&
+			dc_fixpt_le(hw_point, right)) {
+			*index_to_start = i;
+			*index_left = i;
+
+			if (i < max_number - 1)
+				*index_right = i + 1;
+			else
+				*index_right = max_number - 1;
+
+			*pos = HW_POINT_POSITION_MIDDLE;
+
+			return true;
+		} else if ((i == *index_to_start) &&
+			dc_fixpt_le(hw_point, left)) {
+			*index_to_start = i;
+			*index_left = i;
+			*index_right = i;
+
+			*pos = HW_POINT_POSITION_LEFT;
+
+			return true;
+		} else if ((i == max_number - 1) &&
+			dc_fixpt_le(right, hw_point)) {
+			*index_to_start = i;
+			*index_left = i;
+			*index_right = i;
+
+			*pos = HW_POINT_POSITION_RIGHT;
+
+			return true;
+		}
+
+		++i;
+	}
+
+	return false;
+}
+
+static bool build_custom_gamma_mapping_coefficients_worker(
+	const struct dc_gamma *ramp,
+	struct pixel_gamma_point *coeff,
+	const struct hw_x_point *coordinates_x,
+	const struct gamma_pixel *axis_x,
+	enum channel_name channel,
+	uint32_t number_of_points)
+{
+	uint32_t i = 0;
+
+	while (i <= number_of_points) {
+		struct fixed31_32 coord_x;
+
+		uint32_t index_to_start = 0;
+		uint32_t index_left = 0;
+		uint32_t index_right = 0;
+
+		enum hw_point_position hw_pos;
+
+		struct gamma_point *point;
+
+		struct fixed31_32 left_pos;
+		struct fixed31_32 right_pos;
+
+		if (channel == CHANNEL_NAME_RED)
+			coord_x = coordinates_x[i].regamma_y_red;
+		else if (channel == CHANNEL_NAME_GREEN)
+			coord_x = coordinates_x[i].regamma_y_green;
+		else
+			coord_x = coordinates_x[i].regamma_y_blue;
+
+		if (!find_software_points(
+			ramp, axis_x, coord_x, channel,
+			&index_to_start, &index_left, &index_right, &hw_pos)) {
+			BREAK_TO_DEBUGGER();
+			return false;
+		}
+
+		if (index_left >= ramp->num_entries + 3) {
+			BREAK_TO_DEBUGGER();
+			return false;
+		}
+
+		if (index_right >= ramp->num_entries + 3) {
+			BREAK_TO_DEBUGGER();
+			return false;
+		}
+
+		if (channel == CHANNEL_NAME_RED) {
+			point = &coeff[i].r;
+
+			left_pos = axis_x[index_left].r;
+			right_pos = axis_x[index_right].r;
+		} else if (channel == CHANNEL_NAME_GREEN) {
+			point = &coeff[i].g;
+
+			left_pos = axis_x[index_left].g;
+			right_pos = axis_x[index_right].g;
+		} else {
+			point = &coeff[i].b;
+
+			left_pos = axis_x[index_left].b;
+			right_pos = axis_x[index_right].b;
+		}
+
+		if (hw_pos == HW_POINT_POSITION_MIDDLE)
+			point->coeff = dc_fixpt_div(
+				dc_fixpt_sub(
+					coord_x,
+					left_pos),
+				dc_fixpt_sub(
+					right_pos,
+					left_pos));
+		else if (hw_pos == HW_POINT_POSITION_LEFT)
+			point->coeff = dc_fixpt_zero;
+		else if (hw_pos == HW_POINT_POSITION_RIGHT)
+			point->coeff = dc_fixpt_from_int(2);
+		else {
+			BREAK_TO_DEBUGGER();
+			return false;
+		}
+
+		point->left_index = index_left;
+		point->right_index = index_right;
+		point->pos = hw_pos;
+
+		++i;
+	}
+
+	return true;
+}
+
+static struct fixed31_32 calculate_mapped_value(
+	struct pwl_float_data *rgb,
+	const struct pixel_gamma_point *coeff,
+	enum channel_name channel,
+	uint32_t max_index)
+{
+	const struct gamma_point *point;
+
+	struct fixed31_32 result;
+
+	if (channel == CHANNEL_NAME_RED)
+		point = &coeff->r;
+	else if (channel == CHANNEL_NAME_GREEN)
+		point = &coeff->g;
+	else
+		point = &coeff->b;
+
+	if ((point->left_index < 0) || (point->left_index > max_index)) {
+		BREAK_TO_DEBUGGER();
+		return dc_fixpt_zero;
+	}
+
+	if ((point->right_index < 0) || (point->right_index > max_index)) {
+		BREAK_TO_DEBUGGER();
+		return dc_fixpt_zero;
+	}
+
+	if (point->pos == HW_POINT_POSITION_MIDDLE)
+		if (channel == CHANNEL_NAME_RED)
+			result = dc_fixpt_add(
+				dc_fixpt_mul(
+					point->coeff,
+					dc_fixpt_sub(
+						rgb[point->right_index].r,
+						rgb[point->left_index].r)),
+				rgb[point->left_index].r);
+		else if (channel == CHANNEL_NAME_GREEN)
+			result = dc_fixpt_add(
+				dc_fixpt_mul(
+					point->coeff,
+					dc_fixpt_sub(
+						rgb[point->right_index].g,
+						rgb[point->left_index].g)),
+				rgb[point->left_index].g);
+		else
+			result = dc_fixpt_add(
+				dc_fixpt_mul(
+					point->coeff,
+					dc_fixpt_sub(
+						rgb[point->right_index].b,
+						rgb[point->left_index].b)),
+				rgb[point->left_index].b);
+	else if (point->pos == HW_POINT_POSITION_LEFT) {
+		BREAK_TO_DEBUGGER();
+		result = dc_fixpt_zero;
+	} else {
+		BREAK_TO_DEBUGGER();
+		result = dc_fixpt_one;
+	}
+
+	return result;
+}
+
+static void build_pq(struct pwl_float_data_ex *rgb_regamma,
+		uint32_t hw_points_num,
+		const struct hw_x_point *coordinate_x,
+		uint32_t sdr_white_level)
+{
+	uint32_t i, start_index;
+
+	struct pwl_float_data_ex *rgb = rgb_regamma;
+	const struct hw_x_point *coord_x = coordinate_x;
+	struct fixed31_32 x;
+	struct fixed31_32 output;
+	struct fixed31_32 scaling_factor =
+			dc_fixpt_from_fraction(sdr_white_level, 10000);
+
+	if (!pq_initialized && sdr_white_level == 80) {
+		precompute_pq();
+		pq_initialized = true;
+	}
+
+	/* TODO: start index is from segment 2^-24, skipping first segment
+	 * due to x values too small for power calculations
+	 */
+	start_index = 32;
+	rgb += start_index;
+	coord_x += start_index;
+
+	for (i = start_index; i <= hw_points_num; i++) {
+		/* Multiply 0.008 as regamma is 0-1 and FP16 input is 0-125.
+		 * FP 1.0 = 80nits
+		 */
+		if (sdr_white_level == 80) {
+			output = pq_table[i];
+		} else {
+			x = dc_fixpt_mul(coord_x->x, scaling_factor);
+			compute_pq(x, &output);
+		}
+
+		/* should really not happen? */
+		if (dc_fixpt_lt(output, dc_fixpt_zero))
+			output = dc_fixpt_zero;
+		else if (dc_fixpt_lt(dc_fixpt_one, output))
+			output = dc_fixpt_one;
+
+		rgb->r = output;
+		rgb->g = output;
+		rgb->b = output;
+
+		++coord_x;
+		++rgb;
+	}
+}
+
+static void build_de_pq(struct pwl_float_data_ex *de_pq,
+		uint32_t hw_points_num,
+		const struct hw_x_point *coordinate_x)
+{
+	uint32_t i;
+	struct fixed31_32 output;
+
+	struct fixed31_32 scaling_factor = dc_fixpt_from_int(125);
+
+	if (!de_pq_initialized) {
+		precompute_de_pq();
+		de_pq_initialized = true;
+	}
+
+
+	for (i = 0; i <= hw_points_num; i++) {
+		output = de_pq_table[i];
+		/* should really not happen? */
+		if (dc_fixpt_lt(output, dc_fixpt_zero))
+			output = dc_fixpt_zero;
+		else if (dc_fixpt_lt(scaling_factor, output))
+			output = scaling_factor;
+		de_pq[i].r = output;
+		de_pq[i].g = output;
+		de_pq[i].b = output;
+	}
+}
+
+static void build_regamma(struct pwl_float_data_ex *rgb_regamma,
+		uint32_t hw_points_num,
+		const struct hw_x_point *coordinate_x, bool is_2_4)
+{
+	uint32_t i;
+
+	struct gamma_coefficients coeff;
+	struct pwl_float_data_ex *rgb = rgb_regamma;
+	const struct hw_x_point *coord_x = coordinate_x;
+
+	build_coefficients(&coeff, is_2_4);
+
+	i = 0;
+
+	while (i != hw_points_num + 1) {
+		/*TODO use y vs r,g,b*/
+		rgb->r = translate_from_linear_space_ex(
+			coord_x->x, &coeff, 0);
+		rgb->g = rgb->r;
+		rgb->b = rgb->r;
+		++coord_x;
+		++rgb;
+		++i;
+	}
+}
+
+static void build_degamma(struct pwl_float_data_ex *curve,
+		uint32_t hw_points_num,
+		const struct hw_x_point *coordinate_x, bool is_2_4)
+{
+	uint32_t i;
+	struct gamma_coefficients coeff;
+	uint32_t begin_index, end_index;
+
+	build_coefficients(&coeff, is_2_4);
+	i = 0;
+
+	/* X points is 2^-25 to 2^7
+	 * De-gamma X is 2^-12 to 2^0 – we are skipping first -12-(-25) = 13 regions
+	 */
+	begin_index = 13 * NUM_PTS_IN_REGION;
+	end_index = begin_index + 12 * NUM_PTS_IN_REGION;
+
+	while (i != begin_index) {
+		curve[i].r = dc_fixpt_zero;
+		curve[i].g = dc_fixpt_zero;
+		curve[i].b = dc_fixpt_zero;
+		i++;
+	}
+
+	while (i != end_index) {
+		curve[i].r = translate_to_linear_space_ex(
+				coordinate_x[i].x, &coeff, 0);
+		curve[i].g = curve[i].r;
+		curve[i].b = curve[i].r;
+		i++;
+	}
+	while (i != hw_points_num + 1) {
+		curve[i].r = dc_fixpt_one;
+		curve[i].g = dc_fixpt_one;
+		curve[i].b = dc_fixpt_one;
+		i++;
+	}
+}
+
+static void build_hlg_degamma(struct pwl_float_data_ex *degamma,
+		uint32_t hw_points_num,
+		const struct hw_x_point *coordinate_x, bool is_light0_12)
+{
+	uint32_t i;
+
+	struct pwl_float_data_ex *rgb = degamma;
+	const struct hw_x_point *coord_x = coordinate_x;
+
+	i = 0;
+
+	while (i != hw_points_num + 1) {
+		compute_hlg_oetf(coord_x->x, is_light0_12, &rgb->r);
+		rgb->g = rgb->r;
+		rgb->b = rgb->r;
+		++coord_x;
+		++rgb;
+		++i;
+	}
+}
+
+static void build_hlg_regamma(struct pwl_float_data_ex *regamma,
+		uint32_t hw_points_num,
+		const struct hw_x_point *coordinate_x, bool is_light0_12)
+{
+	uint32_t i;
+
+	struct pwl_float_data_ex *rgb = regamma;
+	const struct hw_x_point *coord_x = coordinate_x;
+
+	i = 0;
+
+	while (i != hw_points_num + 1) {
+		compute_hlg_eotf(coord_x->x, is_light0_12, &rgb->r);
+		rgb->g = rgb->r;
+		rgb->b = rgb->r;
+		++coord_x;
+		++rgb;
+		++i;
+	}
+}
+
+static void scale_gamma(struct pwl_float_data *pwl_rgb,
+		const struct dc_gamma *ramp,
+		struct dividers dividers)
+{
+	const struct fixed31_32 max_driver = dc_fixpt_from_int(0xFFFF);
+	const struct fixed31_32 max_os = dc_fixpt_from_int(0xFF00);
+	struct fixed31_32 scaler = max_os;
+	uint32_t i;
+	struct pwl_float_data *rgb = pwl_rgb;
+	struct pwl_float_data *rgb_last = rgb + ramp->num_entries - 1;
+
+	i = 0;
+
+	do {
+		if (dc_fixpt_lt(max_os, ramp->entries.red[i]) ||
+			dc_fixpt_lt(max_os, ramp->entries.green[i]) ||
+			dc_fixpt_lt(max_os, ramp->entries.blue[i])) {
+			scaler = max_driver;
+			break;
+		}
+		++i;
+	} while (i != ramp->num_entries);
+
+	i = 0;
+
+	do {
+		rgb->r = dc_fixpt_div(
+			ramp->entries.red[i], scaler);
+		rgb->g = dc_fixpt_div(
+			ramp->entries.green[i], scaler);
+		rgb->b = dc_fixpt_div(
+			ramp->entries.blue[i], scaler);
+
+		++rgb;
+		++i;
+	} while (i != ramp->num_entries);
+
+	rgb->r = dc_fixpt_mul(rgb_last->r,
+			dividers.divider1);
+	rgb->g = dc_fixpt_mul(rgb_last->g,
+			dividers.divider1);
+	rgb->b = dc_fixpt_mul(rgb_last->b,
+			dividers.divider1);
+
+	++rgb;
+
+	rgb->r = dc_fixpt_mul(rgb_last->r,
+			dividers.divider2);
+	rgb->g = dc_fixpt_mul(rgb_last->g,
+			dividers.divider2);
+	rgb->b = dc_fixpt_mul(rgb_last->b,
+			dividers.divider2);
+
+	++rgb;
+
+	rgb->r = dc_fixpt_mul(rgb_last->r,
+			dividers.divider3);
+	rgb->g = dc_fixpt_mul(rgb_last->g,
+			dividers.divider3);
+	rgb->b = dc_fixpt_mul(rgb_last->b,
+			dividers.divider3);
+}
+
+static void scale_gamma_dx(struct pwl_float_data *pwl_rgb,
+		const struct dc_gamma *ramp,
+		struct dividers dividers)
+{
+	uint32_t i;
+	struct fixed31_32 min = dc_fixpt_zero;
+	struct fixed31_32 max = dc_fixpt_one;
+
+	struct fixed31_32 delta = dc_fixpt_zero;
+	struct fixed31_32 offset = dc_fixpt_zero;
+
+	for (i = 0 ; i < ramp->num_entries; i++) {
+		if (dc_fixpt_lt(ramp->entries.red[i], min))
+			min = ramp->entries.red[i];
+
+		if (dc_fixpt_lt(ramp->entries.green[i], min))
+			min = ramp->entries.green[i];
+
+		if (dc_fixpt_lt(ramp->entries.blue[i], min))
+			min = ramp->entries.blue[i];
+
+		if (dc_fixpt_lt(max, ramp->entries.red[i]))
+			max = ramp->entries.red[i];
+
+		if (dc_fixpt_lt(max, ramp->entries.green[i]))
+			max = ramp->entries.green[i];
+
+		if (dc_fixpt_lt(max, ramp->entries.blue[i]))
+			max = ramp->entries.blue[i];
+	}
+
+	if (dc_fixpt_lt(min, dc_fixpt_zero))
+		delta = dc_fixpt_neg(min);
+
+	offset = dc_fixpt_add(min, max);
+
+	for (i = 0 ; i < ramp->num_entries; i++) {
+		pwl_rgb[i].r = dc_fixpt_div(
+			dc_fixpt_add(
+				ramp->entries.red[i], delta), offset);
+		pwl_rgb[i].g = dc_fixpt_div(
+			dc_fixpt_add(
+				ramp->entries.green[i], delta), offset);
+		pwl_rgb[i].b = dc_fixpt_div(
+			dc_fixpt_add(
+				ramp->entries.blue[i], delta), offset);
+
+	}
+
+	pwl_rgb[i].r =  dc_fixpt_sub(dc_fixpt_mul_int(
+				pwl_rgb[i-1].r, 2), pwl_rgb[i-2].r);
+	pwl_rgb[i].g =  dc_fixpt_sub(dc_fixpt_mul_int(
+				pwl_rgb[i-1].g, 2), pwl_rgb[i-2].g);
+	pwl_rgb[i].b =  dc_fixpt_sub(dc_fixpt_mul_int(
+				pwl_rgb[i-1].b, 2), pwl_rgb[i-2].b);
+	++i;
+	pwl_rgb[i].r =  dc_fixpt_sub(dc_fixpt_mul_int(
+				pwl_rgb[i-1].r, 2), pwl_rgb[i-2].r);
+	pwl_rgb[i].g =  dc_fixpt_sub(dc_fixpt_mul_int(
+				pwl_rgb[i-1].g, 2), pwl_rgb[i-2].g);
+	pwl_rgb[i].b =  dc_fixpt_sub(dc_fixpt_mul_int(
+				pwl_rgb[i-1].b, 2), pwl_rgb[i-2].b);
+}
+
+/* todo: all these scale_gamma functions are inherently the same but
+ *  take different structures as params or different format for ramp
+ *  values. We could probably implement it in a more generic fashion
+ */
+static void scale_user_regamma_ramp(struct pwl_float_data *pwl_rgb,
+		const struct regamma_ramp *ramp,
+		struct dividers dividers)
+{
+	unsigned short max_driver = 0xFFFF;
+	unsigned short max_os = 0xFF00;
+	unsigned short scaler = max_os;
+	uint32_t i;
+	struct pwl_float_data *rgb = pwl_rgb;
+	struct pwl_float_data *rgb_last = rgb + GAMMA_RGB_256_ENTRIES - 1;
+
+	i = 0;
+	do {
+		if (ramp->gamma[i] > max_os ||
+				ramp->gamma[i + 256] > max_os ||
+				ramp->gamma[i + 512] > max_os) {
+			scaler = max_driver;
+			break;
+		}
+		i++;
+	} while (i != GAMMA_RGB_256_ENTRIES);
+
+	i = 0;
+	do {
+		rgb->r = dc_fixpt_from_fraction(
+				ramp->gamma[i], scaler);
+		rgb->g = dc_fixpt_from_fraction(
+				ramp->gamma[i + 256], scaler);
+		rgb->b = dc_fixpt_from_fraction(
+				ramp->gamma[i + 512], scaler);
+
+		++rgb;
+		++i;
+	} while (i != GAMMA_RGB_256_ENTRIES);
+
+	rgb->r = dc_fixpt_mul(rgb_last->r,
+			dividers.divider1);
+	rgb->g = dc_fixpt_mul(rgb_last->g,
+			dividers.divider1);
+	rgb->b = dc_fixpt_mul(rgb_last->b,
+			dividers.divider1);
+
+	++rgb;
+
+	rgb->r = dc_fixpt_mul(rgb_last->r,
+			dividers.divider2);
+	rgb->g = dc_fixpt_mul(rgb_last->g,
+			dividers.divider2);
+	rgb->b = dc_fixpt_mul(rgb_last->b,
+			dividers.divider2);
+
+	++rgb;
+
+	rgb->r = dc_fixpt_mul(rgb_last->r,
+			dividers.divider3);
+	rgb->g = dc_fixpt_mul(rgb_last->g,
+			dividers.divider3);
+	rgb->b = dc_fixpt_mul(rgb_last->b,
+			dividers.divider3);
+}
+
+/*
+ * RS3+ color transform DDI - 1D LUT adjustment is composed with regamma here
+ * Input is evenly distributed in the output color space as specified in
+ * SetTimings
+ *
+ * Interpolation details:
+ * 1D LUT has 4096 values which give curve correction in 0-1 float range
+ * for evenly spaced points in 0-1 range. lut1D[index] gives correction
+ * for index/4095.
+ * First we find index for which:
+ *	index/4095 < regamma_y < (index+1)/4095 =>
+ *	index < 4095*regamma_y < index + 1
+ * norm_y = 4095*regamma_y, and index is just truncating to nearest integer
+ * lut1 = lut1D[index], lut2 = lut1D[index+1]
+ *
+ * adjustedY is then linearly interpolating regamma Y between lut1 and lut2
+ *
+ * Custom degamma on Linux uses the same interpolation math, so is handled here
+ */
+static void apply_lut_1d(
+		const struct dc_gamma *ramp,
+		uint32_t num_hw_points,
+		struct dc_transfer_func_distributed_points *tf_pts)
+{
+	int i = 0;
+	int color = 0;
+	struct fixed31_32 *regamma_y;
+	struct fixed31_32 norm_y;
+	struct fixed31_32 lut1;
+	struct fixed31_32 lut2;
+	const int max_lut_index = 4095;
+	const struct fixed31_32 max_lut_index_f =
+			dc_fixpt_from_int(max_lut_index);
+	int32_t index = 0, index_next = 0;
+	struct fixed31_32 index_f;
+	struct fixed31_32 delta_lut;
+	struct fixed31_32 delta_index;
+
+	if (ramp->type != GAMMA_CS_TFM_1D && ramp->type != GAMMA_CUSTOM)
+		return; // this is not expected
+
+	for (i = 0; i < num_hw_points; i++) {
+		for (color = 0; color < 3; color++) {
+			if (color == 0)
+				regamma_y = &tf_pts->red[i];
+			else if (color == 1)
+				regamma_y = &tf_pts->green[i];
+			else
+				regamma_y = &tf_pts->blue[i];
+
+			norm_y = dc_fixpt_mul(max_lut_index_f,
+						   *regamma_y);
+			index = dc_fixpt_floor(norm_y);
+			index_f = dc_fixpt_from_int(index);
+
+			if (index < 0 || index > max_lut_index)
+				continue;
+
+			index_next = (index == max_lut_index) ? index : index+1;
+
+			if (color == 0) {
+				lut1 = ramp->entries.red[index];
+				lut2 = ramp->entries.red[index_next];
+			} else if (color == 1) {
+				lut1 = ramp->entries.green[index];
+				lut2 = ramp->entries.green[index_next];
+			} else {
+				lut1 = ramp->entries.blue[index];
+				lut2 = ramp->entries.blue[index_next];
+			}
+
+			// we have everything now, so interpolate
+			delta_lut = dc_fixpt_sub(lut2, lut1);
+			delta_index = dc_fixpt_sub(norm_y, index_f);
+
+			*regamma_y = dc_fixpt_add(lut1,
+				dc_fixpt_mul(delta_index, delta_lut));
+		}
+	}
+}
+
+static void build_evenly_distributed_points(
+	struct gamma_pixel *points,
+	uint32_t numberof_points,
+	struct dividers dividers)
+{
+	struct gamma_pixel *p = points;
+	struct gamma_pixel *p_last;
+
+	uint32_t i = 0;
+
+	// This function should not gets called with 0 as a parameter
+	ASSERT(numberof_points > 0);
+	p_last = p + numberof_points - 1;
+
+	do {
+		struct fixed31_32 value = dc_fixpt_from_fraction(i,
+			numberof_points - 1);
+
+		p->r = value;
+		p->g = value;
+		p->b = value;
+
+		++p;
+		++i;
+	} while (i < numberof_points);
+
+	p->r = dc_fixpt_div(p_last->r, dividers.divider1);
+	p->g = dc_fixpt_div(p_last->g, dividers.divider1);
+	p->b = dc_fixpt_div(p_last->b, dividers.divider1);
+
+	++p;
+
+	p->r = dc_fixpt_div(p_last->r, dividers.divider2);
+	p->g = dc_fixpt_div(p_last->g, dividers.divider2);
+	p->b = dc_fixpt_div(p_last->b, dividers.divider2);
+
+	++p;
+
+	p->r = dc_fixpt_div(p_last->r, dividers.divider3);
+	p->g = dc_fixpt_div(p_last->g, dividers.divider3);
+	p->b = dc_fixpt_div(p_last->b, dividers.divider3);
+}
+
+static inline void copy_rgb_regamma_to_coordinates_x(
+		struct hw_x_point *coordinates_x,
+		uint32_t hw_points_num,
+		const struct pwl_float_data_ex *rgb_ex)
+{
+	struct hw_x_point *coords = coordinates_x;
+	uint32_t i = 0;
+	const struct pwl_float_data_ex *rgb_regamma = rgb_ex;
+
+	while (i <= hw_points_num + 1) {
+		coords->regamma_y_red = rgb_regamma->r;
+		coords->regamma_y_green = rgb_regamma->g;
+		coords->regamma_y_blue = rgb_regamma->b;
+
+		++coords;
+		++rgb_regamma;
+		++i;
+	}
+}
+
+static bool calculate_interpolated_hardware_curve(
+	const struct dc_gamma *ramp,
+	struct pixel_gamma_point *coeff128,
+	struct pwl_float_data *rgb_user,
+	const struct hw_x_point *coordinates_x,
+	const struct gamma_pixel *axis_x,
+	uint32_t number_of_points,
+	struct dc_transfer_func_distributed_points *tf_pts)
+{
+
+	const struct pixel_gamma_point *coeff = coeff128;
+	uint32_t max_entries = 3 - 1;
+
+	uint32_t i = 0;
+
+	for (i = 0; i < 3; i++) {
+		if (!build_custom_gamma_mapping_coefficients_worker(
+				ramp, coeff128, coordinates_x, axis_x, i,
+				number_of_points))
+			return false;
+	}
+
+	i = 0;
+	max_entries += ramp->num_entries;
+
+	/* TODO: float point case */
+
+	while (i <= number_of_points) {
+		tf_pts->red[i] = calculate_mapped_value(
+			rgb_user, coeff, CHANNEL_NAME_RED, max_entries);
+		tf_pts->green[i] = calculate_mapped_value(
+			rgb_user, coeff, CHANNEL_NAME_GREEN, max_entries);
+		tf_pts->blue[i] = calculate_mapped_value(
+			rgb_user, coeff, CHANNEL_NAME_BLUE, max_entries);
+
+		++coeff;
+		++i;
+	}
+
+	return true;
+}
+
+/* The "old" interpolation uses a complicated scheme to build an array of
+ * coefficients while also using an array of 0-255 normalized to 0-1
+ * Then there's another loop using both of the above + new scaled user ramp
+ * and we concatenate them. It also searches for points of interpolation and
+ * uses enums for positions.
+ *
+ * This function uses a different approach:
+ * user ramp is always applied on X with 0/255, 1/255, 2/255, ..., 255/255
+ * To find index for hwX , we notice the following:
+ * i/255 <= hwX < (i+1)/255  <=> i <= 255*hwX < i+1
+ * See apply_lut_1d which is the same principle, but on 4K entry 1D LUT
+ *
+ * Once the index is known, combined Y is simply:
+ * user_ramp(index) + (hwX-index/255)*(user_ramp(index+1) - user_ramp(index)
+ *
+ * We should switch to this method in all cases, it's simpler and faster
+ * ToDo one day - for now this only applies to ADL regamma to avoid regression
+ * for regular use cases (sRGB and PQ)
+ */
+static void interpolate_user_regamma(uint32_t hw_points_num,
+		struct pwl_float_data *rgb_user,
+		bool apply_degamma,
+		struct dc_transfer_func_distributed_points *tf_pts)
+{
+	uint32_t i;
+	uint32_t color = 0;
+	int32_t index;
+	int32_t index_next;
+	struct fixed31_32 *tf_point;
+	struct fixed31_32 hw_x;
+	struct fixed31_32 norm_factor =
+			dc_fixpt_from_int(255);
+	struct fixed31_32 norm_x;
+	struct fixed31_32 index_f;
+	struct fixed31_32 lut1;
+	struct fixed31_32 lut2;
+	struct fixed31_32 delta_lut;
+	struct fixed31_32 delta_index;
+
+	i = 0;
+	/* fixed_pt library has problems handling too small values */
+	while (i != 32) {
+		tf_pts->red[i] = dc_fixpt_zero;
+		tf_pts->green[i] = dc_fixpt_zero;
+		tf_pts->blue[i] = dc_fixpt_zero;
+		++i;
+	}
+	while (i <= hw_points_num + 1) {
+		for (color = 0; color < 3; color++) {
+			if (color == 0)
+				tf_point = &tf_pts->red[i];
+			else if (color == 1)
+				tf_point = &tf_pts->green[i];
+			else
+				tf_point = &tf_pts->blue[i];
+
+			if (apply_degamma) {
+				if (color == 0)
+					hw_x = coordinates_x[i].regamma_y_red;
+				else if (color == 1)
+					hw_x = coordinates_x[i].regamma_y_green;
+				else
+					hw_x = coordinates_x[i].regamma_y_blue;
+			} else
+				hw_x = coordinates_x[i].x;
+
+			norm_x = dc_fixpt_mul(norm_factor, hw_x);
+			index = dc_fixpt_floor(norm_x);
+			if (index < 0 || index > 255)
+				continue;
+
+			index_f = dc_fixpt_from_int(index);
+			index_next = (index == 255) ? index : index + 1;
+
+			if (color == 0) {
+				lut1 = rgb_user[index].r;
+				lut2 = rgb_user[index_next].r;
+			} else if (color == 1) {
+				lut1 = rgb_user[index].g;
+				lut2 = rgb_user[index_next].g;
+			} else {
+				lut1 = rgb_user[index].b;
+				lut2 = rgb_user[index_next].b;
+			}
+
+			// we have everything now, so interpolate
+			delta_lut = dc_fixpt_sub(lut2, lut1);
+			delta_index = dc_fixpt_sub(norm_x, index_f);
+
+			*tf_point = dc_fixpt_add(lut1,
+				dc_fixpt_mul(delta_index, delta_lut));
+		}
+		++i;
+	}
+}
+
+static void build_new_custom_resulted_curve(
+	uint32_t hw_points_num,
+	struct dc_transfer_func_distributed_points *tf_pts)
+{
+	uint32_t i;
+
+	i = 0;
+
+	while (i != hw_points_num + 1) {
+		tf_pts->red[i] = dc_fixpt_clamp(
+			tf_pts->red[i], dc_fixpt_zero,
+			dc_fixpt_one);
+		tf_pts->green[i] = dc_fixpt_clamp(
+			tf_pts->green[i], dc_fixpt_zero,
+			dc_fixpt_one);
+		tf_pts->blue[i] = dc_fixpt_clamp(
+			tf_pts->blue[i], dc_fixpt_zero,
+			dc_fixpt_one);
+
+		++i;
+	}
+}
+
+static void apply_degamma_for_user_regamma(struct pwl_float_data_ex *rgb_regamma,
+		uint32_t hw_points_num)
+{
+	uint32_t i;
+
+	struct gamma_coefficients coeff;
+	struct pwl_float_data_ex *rgb = rgb_regamma;
+	const struct hw_x_point *coord_x = coordinates_x;
+
+	build_coefficients(&coeff, true);
+
+	i = 0;
+	while (i != hw_points_num + 1) {
+		rgb->r = translate_from_linear_space_ex(
+				coord_x->x, &coeff, 0);
+		rgb->g = rgb->r;
+		rgb->b = rgb->r;
+		++coord_x;
+		++rgb;
+		++i;
+	}
+}
+
+static bool map_regamma_hw_to_x_user(
+	const struct dc_gamma *ramp,
+	struct pixel_gamma_point *coeff128,
+	struct pwl_float_data *rgb_user,
+	struct hw_x_point *coords_x,
+	const struct gamma_pixel *axis_x,
+	const struct pwl_float_data_ex *rgb_regamma,
+	uint32_t hw_points_num,
+	struct dc_transfer_func_distributed_points *tf_pts,
+	bool mapUserRamp)
+{
+	/* setup to spare calculated ideal regamma values */
+
+	int i = 0;
+	struct hw_x_point *coords = coords_x;
+	const struct pwl_float_data_ex *regamma = rgb_regamma;
+
+	if (mapUserRamp) {
+		copy_rgb_regamma_to_coordinates_x(coords,
+				hw_points_num,
+				rgb_regamma);
+
+		calculate_interpolated_hardware_curve(
+			ramp, coeff128, rgb_user, coords, axis_x,
+			hw_points_num, tf_pts);
+	} else {
+		/* just copy current rgb_regamma into  tf_pts */
+		while (i <= hw_points_num) {
+			tf_pts->red[i] = regamma->r;
+			tf_pts->green[i] = regamma->g;
+			tf_pts->blue[i] = regamma->b;
+
+			++regamma;
+			++i;
+		}
+	}
+
+	/* this should be named differently, all it does is clamp to 0-1 */
+	build_new_custom_resulted_curve(hw_points_num, tf_pts);
+
+	return true;
+}
+
+#define _EXTRA_POINTS 3
+
+bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
+		const struct dc_gamma *ramp, bool mapUserRamp)
+{
+	struct dc_transfer_func_distributed_points *tf_pts = &output_tf->tf_pts;
+	struct dividers dividers;
+
+	struct pwl_float_data *rgb_user = NULL;
+	struct pwl_float_data_ex *rgb_regamma = NULL;
+	struct gamma_pixel *axix_x = NULL;
+	struct pixel_gamma_point *coeff = NULL;
+	enum dc_transfer_func_predefined tf = TRANSFER_FUNCTION_SRGB;
+	bool ret = false;
+
+	if (output_tf->type == TF_TYPE_BYPASS)
+		return false;
+
+	/* we can use hardcoded curve for plain SRGB TF */
+	if (output_tf->type == TF_TYPE_PREDEFINED &&
+			output_tf->tf == TRANSFER_FUNCTION_SRGB &&
+			(!mapUserRamp && ramp->type == GAMMA_RGB_256))
+		return true;
+
+	output_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
+
+	rgb_user = kvcalloc(ramp->num_entries + _EXTRA_POINTS,
+			    sizeof(*rgb_user),
+			    GFP_KERNEL);
+	if (!rgb_user)
+		goto rgb_user_alloc_fail;
+	rgb_regamma = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS,
+			       sizeof(*rgb_regamma),
+			       GFP_KERNEL);
+	if (!rgb_regamma)
+		goto rgb_regamma_alloc_fail;
+	axix_x = kvcalloc(ramp->num_entries + 3, sizeof(*axix_x),
+			  GFP_KERNEL);
+	if (!axix_x)
+		goto axix_x_alloc_fail;
+	coeff = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS, sizeof(*coeff),
+			 GFP_KERNEL);
+	if (!coeff)
+		goto coeff_alloc_fail;
+
+	dividers.divider1 = dc_fixpt_from_fraction(3, 2);
+	dividers.divider2 = dc_fixpt_from_int(2);
+	dividers.divider3 = dc_fixpt_from_fraction(5, 2);
+
+	tf = output_tf->tf;
+
+	build_evenly_distributed_points(
+			axix_x,
+			ramp->num_entries,
+			dividers);
+
+	if (ramp->type == GAMMA_RGB_256 && mapUserRamp)
+		scale_gamma(rgb_user, ramp, dividers);
+	else if (ramp->type == GAMMA_RGB_FLOAT_1024)
+		scale_gamma_dx(rgb_user, ramp, dividers);
+
+	if (tf == TRANSFER_FUNCTION_PQ) {
+		tf_pts->end_exponent = 7;
+		tf_pts->x_point_at_y1_red = 125;
+		tf_pts->x_point_at_y1_green = 125;
+		tf_pts->x_point_at_y1_blue = 125;
+
+		build_pq(rgb_regamma,
+				MAX_HW_POINTS,
+				coordinates_x,
+				output_tf->sdr_ref_white_level);
+	} else {
+		tf_pts->end_exponent = 0;
+		tf_pts->x_point_at_y1_red = 1;
+		tf_pts->x_point_at_y1_green = 1;
+		tf_pts->x_point_at_y1_blue = 1;
+
+		build_regamma(rgb_regamma,
+				MAX_HW_POINTS,
+				coordinates_x, tf == TRANSFER_FUNCTION_SRGB ? true:false);
+	}
+
+	map_regamma_hw_to_x_user(ramp, coeff, rgb_user,
+			coordinates_x, axix_x, rgb_regamma,
+			MAX_HW_POINTS, tf_pts,
+			(mapUserRamp || ramp->type != GAMMA_RGB_256) &&
+			ramp->type != GAMMA_CS_TFM_1D);
+
+	if (ramp->type == GAMMA_CS_TFM_1D)
+		apply_lut_1d(ramp, MAX_HW_POINTS, tf_pts);
+
+	ret = true;
+
+	kvfree(coeff);
+coeff_alloc_fail:
+	kvfree(axix_x);
+axix_x_alloc_fail:
+	kvfree(rgb_regamma);
+rgb_regamma_alloc_fail:
+	kvfree(rgb_user);
+rgb_user_alloc_fail:
+	return ret;
+}
+
+bool calculate_user_regamma_coeff(struct dc_transfer_func *output_tf,
+		const struct regamma_lut *regamma)
+{
+	struct gamma_coefficients coeff;
+	const struct hw_x_point *coord_x = coordinates_x;
+	uint32_t i = 0;
+
+	do {
+		coeff.a0[i] = dc_fixpt_from_fraction(
+				regamma->coeff.A0[i], 10000000);
+		coeff.a1[i] = dc_fixpt_from_fraction(
+				regamma->coeff.A1[i], 1000);
+		coeff.a2[i] = dc_fixpt_from_fraction(
+				regamma->coeff.A2[i], 1000);
+		coeff.a3[i] = dc_fixpt_from_fraction(
+				regamma->coeff.A3[i], 1000);
+		coeff.user_gamma[i] = dc_fixpt_from_fraction(
+				regamma->coeff.gamma[i], 1000);
+
+		++i;
+	} while (i != 3);
+
+	i = 0;
+	/* fixed_pt library has problems handling too small values */
+	while (i != 32) {
+		output_tf->tf_pts.red[i] = dc_fixpt_zero;
+		output_tf->tf_pts.green[i] = dc_fixpt_zero;
+		output_tf->tf_pts.blue[i] = dc_fixpt_zero;
+		++coord_x;
+		++i;
+	}
+	while (i != MAX_HW_POINTS + 1) {
+		output_tf->tf_pts.red[i] = translate_from_linear_space_ex(
+				coord_x->x, &coeff, 0);
+		output_tf->tf_pts.green[i] = translate_from_linear_space_ex(
+				coord_x->x, &coeff, 1);
+		output_tf->tf_pts.blue[i] = translate_from_linear_space_ex(
+				coord_x->x, &coeff, 2);
+		++coord_x;
+		++i;
+	}
+
+	// this function just clamps output to 0-1
+	build_new_custom_resulted_curve(MAX_HW_POINTS, &output_tf->tf_pts);
+	output_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
+
+	return true;
+}
+
+bool calculate_user_regamma_ramp(struct dc_transfer_func *output_tf,
+		const struct regamma_lut *regamma)
+{
+	struct dc_transfer_func_distributed_points *tf_pts = &output_tf->tf_pts;
+	struct dividers dividers;
+
+	struct pwl_float_data *rgb_user = NULL;
+	struct pwl_float_data_ex *rgb_regamma = NULL;
+	bool ret = false;
+
+	if (regamma == NULL)
+		return false;
+
+	output_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
+
+	rgb_user = kcalloc(GAMMA_RGB_256_ENTRIES + _EXTRA_POINTS,
+			   sizeof(*rgb_user),
+			   GFP_KERNEL);
+	if (!rgb_user)
+		goto rgb_user_alloc_fail;
+
+	rgb_regamma = kcalloc(MAX_HW_POINTS + _EXTRA_POINTS,
+			      sizeof(*rgb_regamma),
+			      GFP_KERNEL);
+	if (!rgb_regamma)
+		goto rgb_regamma_alloc_fail;
+
+	dividers.divider1 = dc_fixpt_from_fraction(3, 2);
+	dividers.divider2 = dc_fixpt_from_int(2);
+	dividers.divider3 = dc_fixpt_from_fraction(5, 2);
+
+	scale_user_regamma_ramp(rgb_user, &regamma->ramp, dividers);
+
+	if (regamma->flags.bits.applyDegamma == 1) {
+		apply_degamma_for_user_regamma(rgb_regamma, MAX_HW_POINTS);
+		copy_rgb_regamma_to_coordinates_x(coordinates_x,
+				MAX_HW_POINTS, rgb_regamma);
+	}
+
+	interpolate_user_regamma(MAX_HW_POINTS, rgb_user,
+			regamma->flags.bits.applyDegamma, tf_pts);
+
+	// no custom HDR curves!
+	tf_pts->end_exponent = 0;
+	tf_pts->x_point_at_y1_red = 1;
+	tf_pts->x_point_at_y1_green = 1;
+	tf_pts->x_point_at_y1_blue = 1;
+
+	// this function just clamps output to 0-1
+	build_new_custom_resulted_curve(MAX_HW_POINTS, tf_pts);
+
+	ret = true;
+
+	kfree(rgb_regamma);
+rgb_regamma_alloc_fail:
+	kfree(rgb_user);
+rgb_user_alloc_fail:
+	return ret;
+}
+
+bool mod_color_calculate_degamma_params(struct dc_transfer_func *input_tf,
+		const struct dc_gamma *ramp, bool mapUserRamp)
+{
+	struct dc_transfer_func_distributed_points *tf_pts = &input_tf->tf_pts;
+	struct dividers dividers;
+
+	struct pwl_float_data *rgb_user = NULL;
+	struct pwl_float_data_ex *curve = NULL;
+	struct gamma_pixel *axix_x = NULL;
+	struct pixel_gamma_point *coeff = NULL;
+	enum dc_transfer_func_predefined tf = TRANSFER_FUNCTION_SRGB;
+	bool ret = false;
+
+	if (input_tf->type == TF_TYPE_BYPASS)
+		return false;
+
+	/* we can use hardcoded curve for plain SRGB TF */
+	if (input_tf->type == TF_TYPE_PREDEFINED &&
+			input_tf->tf == TRANSFER_FUNCTION_SRGB &&
+			(!mapUserRamp && ramp->type == GAMMA_RGB_256))
+		return true;
+
+	input_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
+
+	rgb_user = kvcalloc(ramp->num_entries + _EXTRA_POINTS,
+			    sizeof(*rgb_user),
+			    GFP_KERNEL);
+	if (!rgb_user)
+		goto rgb_user_alloc_fail;
+	curve = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS, sizeof(*curve),
+			 GFP_KERNEL);
+	if (!curve)
+		goto curve_alloc_fail;
+	axix_x = kvcalloc(ramp->num_entries + _EXTRA_POINTS, sizeof(*axix_x),
+			  GFP_KERNEL);
+	if (!axix_x)
+		goto axix_x_alloc_fail;
+	coeff = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS, sizeof(*coeff),
+			 GFP_KERNEL);
+	if (!coeff)
+		goto coeff_alloc_fail;
+
+	dividers.divider1 = dc_fixpt_from_fraction(3, 2);
+	dividers.divider2 = dc_fixpt_from_int(2);
+	dividers.divider3 = dc_fixpt_from_fraction(5, 2);
+
+	tf = input_tf->tf;
+
+	build_evenly_distributed_points(
+			axix_x,
+			ramp->num_entries,
+			dividers);
+
+	if (ramp->type == GAMMA_RGB_256 && mapUserRamp)
+		scale_gamma(rgb_user, ramp, dividers);
+	else if (ramp->type == GAMMA_RGB_FLOAT_1024)
+		scale_gamma_dx(rgb_user, ramp, dividers);
+
+	if (tf == TRANSFER_FUNCTION_PQ)
+		build_de_pq(curve,
+				MAX_HW_POINTS,
+				coordinates_x);
+	else
+		build_degamma(curve,
+				MAX_HW_POINTS,
+				coordinates_x,
+				tf == TRANSFER_FUNCTION_SRGB ? true:false);
+
+	tf_pts->end_exponent = 0;
+	tf_pts->x_point_at_y1_red = 1;
+	tf_pts->x_point_at_y1_green = 1;
+	tf_pts->x_point_at_y1_blue = 1;
+
+	map_regamma_hw_to_x_user(ramp, coeff, rgb_user,
+			coordinates_x, axix_x, curve,
+			MAX_HW_POINTS, tf_pts,
+			mapUserRamp && ramp->type != GAMMA_CUSTOM);
+	if (ramp->type == GAMMA_CUSTOM)
+		apply_lut_1d(ramp, MAX_HW_POINTS, tf_pts);
+
+	ret = true;
+
+	kvfree(coeff);
+coeff_alloc_fail:
+	kvfree(axix_x);
+axix_x_alloc_fail:
+	kvfree(curve);
+curve_alloc_fail:
+	kvfree(rgb_user);
+rgb_user_alloc_fail:
+
+	return ret;
+
+}
+
+
+bool  mod_color_calculate_curve(enum dc_transfer_func_predefined trans,
+				struct dc_transfer_func_distributed_points *points)
+{
+	uint32_t i;
+	bool ret = false;
+	struct pwl_float_data_ex *rgb_regamma = NULL;
+
+	if (trans == TRANSFER_FUNCTION_UNITY ||
+		trans == TRANSFER_FUNCTION_LINEAR) {
+		points->end_exponent = 0;
+		points->x_point_at_y1_red = 1;
+		points->x_point_at_y1_green = 1;
+		points->x_point_at_y1_blue = 1;
+
+		for (i = 0; i <= MAX_HW_POINTS ; i++) {
+			points->red[i]    = coordinates_x[i].x;
+			points->green[i]  = coordinates_x[i].x;
+			points->blue[i]   = coordinates_x[i].x;
+		}
+		ret = true;
+	} else if (trans == TRANSFER_FUNCTION_PQ) {
+		rgb_regamma = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS,
+				       sizeof(*rgb_regamma),
+				       GFP_KERNEL);
+		if (!rgb_regamma)
+			goto rgb_regamma_alloc_fail;
+		points->end_exponent = 7;
+		points->x_point_at_y1_red = 125;
+		points->x_point_at_y1_green = 125;
+		points->x_point_at_y1_blue = 125;
+
+
+		build_pq(rgb_regamma,
+				MAX_HW_POINTS,
+				coordinates_x,
+				80);
+		for (i = 0; i <= MAX_HW_POINTS ; i++) {
+			points->red[i]    = rgb_regamma[i].r;
+			points->green[i]  = rgb_regamma[i].g;
+			points->blue[i]   = rgb_regamma[i].b;
+		}
+		ret = true;
+
+		kvfree(rgb_regamma);
+	} else if (trans == TRANSFER_FUNCTION_SRGB ||
+			  trans == TRANSFER_FUNCTION_BT709) {
+		rgb_regamma = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS,
+				       sizeof(*rgb_regamma),
+				       GFP_KERNEL);
+		if (!rgb_regamma)
+			goto rgb_regamma_alloc_fail;
+		points->end_exponent = 0;
+		points->x_point_at_y1_red = 1;
+		points->x_point_at_y1_green = 1;
+		points->x_point_at_y1_blue = 1;
+
+		build_regamma(rgb_regamma,
+				MAX_HW_POINTS,
+				coordinates_x, trans == TRANSFER_FUNCTION_SRGB ? true:false);
+		for (i = 0; i <= MAX_HW_POINTS ; i++) {
+			points->red[i]    = rgb_regamma[i].r;
+			points->green[i]  = rgb_regamma[i].g;
+			points->blue[i]   = rgb_regamma[i].b;
+		}
+		ret = true;
+
+		kvfree(rgb_regamma);
+	} else if (trans == TRANSFER_FUNCTION_HLG ||
+		trans == TRANSFER_FUNCTION_HLG12) {
+		rgb_regamma = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS,
+				       sizeof(*rgb_regamma),
+				       GFP_KERNEL);
+		if (!rgb_regamma)
+			goto rgb_regamma_alloc_fail;
+
+		build_hlg_regamma(rgb_regamma,
+				MAX_HW_POINTS,
+				coordinates_x,
+				trans == TRANSFER_FUNCTION_HLG12 ? true:false);
+		for (i = 0; i <= MAX_HW_POINTS ; i++) {
+			points->red[i]    = rgb_regamma[i].r;
+			points->green[i]  = rgb_regamma[i].g;
+			points->blue[i]   = rgb_regamma[i].b;
+		}
+		ret = true;
+		kvfree(rgb_regamma);
+	}
+rgb_regamma_alloc_fail:
+	return ret;
+}
+
+
+bool  mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
+				struct dc_transfer_func_distributed_points *points)
+{
+	uint32_t i;
+	bool ret = false;
+	struct pwl_float_data_ex *rgb_degamma = NULL;
+
+	if (trans == TRANSFER_FUNCTION_UNITY ||
+		trans == TRANSFER_FUNCTION_LINEAR) {
+
+		for (i = 0; i <= MAX_HW_POINTS ; i++) {
+			points->red[i]    = coordinates_x[i].x;
+			points->green[i]  = coordinates_x[i].x;
+			points->blue[i]   = coordinates_x[i].x;
+		}
+		ret = true;
+	} else if (trans == TRANSFER_FUNCTION_PQ) {
+		rgb_degamma = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS,
+				       sizeof(*rgb_degamma),
+				       GFP_KERNEL);
+		if (!rgb_degamma)
+			goto rgb_degamma_alloc_fail;
+
+
+		build_de_pq(rgb_degamma,
+				MAX_HW_POINTS,
+				coordinates_x);
+		for (i = 0; i <= MAX_HW_POINTS ; i++) {
+			points->red[i]    = rgb_degamma[i].r;
+			points->green[i]  = rgb_degamma[i].g;
+			points->blue[i]   = rgb_degamma[i].b;
+		}
+		ret = true;
+
+		kvfree(rgb_degamma);
+	} else if (trans == TRANSFER_FUNCTION_SRGB ||
+			  trans == TRANSFER_FUNCTION_BT709) {
+		rgb_degamma = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS,
+				       sizeof(*rgb_degamma),
+				       GFP_KERNEL);
+		if (!rgb_degamma)
+			goto rgb_degamma_alloc_fail;
+
+		build_degamma(rgb_degamma,
+				MAX_HW_POINTS,
+				coordinates_x, trans == TRANSFER_FUNCTION_SRGB ? true:false);
+		for (i = 0; i <= MAX_HW_POINTS ; i++) {
+			points->red[i]    = rgb_degamma[i].r;
+			points->green[i]  = rgb_degamma[i].g;
+			points->blue[i]   = rgb_degamma[i].b;
+		}
+		ret = true;
+
+		kvfree(rgb_degamma);
+	} else if (trans == TRANSFER_FUNCTION_HLG ||
+		trans == TRANSFER_FUNCTION_HLG12) {
+		rgb_degamma = kvcalloc(MAX_HW_POINTS + _EXTRA_POINTS,
+				       sizeof(*rgb_degamma),
+				       GFP_KERNEL);
+		if (!rgb_degamma)
+			goto rgb_degamma_alloc_fail;
+
+		build_hlg_degamma(rgb_degamma,
+				MAX_HW_POINTS,
+				coordinates_x,
+				trans == TRANSFER_FUNCTION_HLG12 ? true:false);
+		for (i = 0; i <= MAX_HW_POINTS ; i++) {
+			points->red[i]    = rgb_degamma[i].r;
+			points->green[i]  = rgb_degamma[i].g;
+			points->blue[i]   = rgb_degamma[i].b;
+		}
+		ret = true;
+		kvfree(rgb_degamma);
+	}
+	points->end_exponent = 0;
+	points->x_point_at_y1_red = 1;
+	points->x_point_at_y1_green = 1;
+	points->x_point_at_y1_blue = 1;
+
+rgb_degamma_alloc_fail:
+	return ret;
+}
+
+
diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.h b/drivers/gpu/drm/amd/display/modules/color/color_gamma.h
new file mode 100644
index 000000000..b64048991
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2016 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 COLOR_MOD_COLOR_GAMMA_H_
+#define COLOR_MOD_COLOR_GAMMA_H_
+
+struct dc_transfer_func;
+struct dc_gamma;
+struct dc_transfer_func_distributed_points;
+struct dc_rgb_fixed;
+enum dc_transfer_func_predefined;
+
+/* For SetRegamma ADL interface support
+ * Must match escape type
+ */
+union regamma_flags {
+	unsigned int raw;
+	struct {
+		unsigned int gammaRampArray       :1;    // RegammaRamp is in use
+		unsigned int gammaFromEdid        :1;    //gamma from edid is in use
+		unsigned int gammaFromEdidEx      :1;    //gamma from edid is in use , but only for Display Id 1.2
+		unsigned int gammaFromUser        :1;    //user custom gamma is used
+		unsigned int coeffFromUser        :1;    //coeff. A0-A3 from user is in use
+		unsigned int coeffFromEdid        :1;    //coeff. A0-A3 from edid is in use
+		unsigned int applyDegamma         :1;    //flag for additional degamma correction in driver
+		unsigned int gammaPredefinedSRGB  :1;    //flag for SRGB gamma
+		unsigned int gammaPredefinedPQ    :1;    //flag for PQ gamma
+		unsigned int gammaPredefinedPQ2084Interim :1;    //flag for PQ gamma, lower max nits
+		unsigned int gammaPredefined36    :1;    //flag for 3.6 gamma
+		unsigned int gammaPredefinedReset :1;    //flag to return to previous gamma
+	} bits;
+};
+
+struct regamma_ramp {
+	unsigned short gamma[256*3];  // gamma ramp packed  in same way as OS windows ,r , g & b
+};
+
+struct regamma_coeff {
+	int    gamma[3];
+	int    A0[3];
+	int    A1[3];
+	int    A2[3];
+	int    A3[3];
+};
+
+struct regamma_lut {
+	union regamma_flags flags;
+	union {
+		struct regamma_ramp ramp;
+		struct regamma_coeff coeff;
+	};
+};
+
+void setup_x_points_distribution(void);
+void precompute_pq(void);
+void precompute_de_pq(void);
+
+bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
+		const struct dc_gamma *ramp, bool mapUserRamp);
+
+bool mod_color_calculate_degamma_params(struct dc_transfer_func *output_tf,
+		const struct dc_gamma *ramp, bool mapUserRamp);
+
+bool mod_color_calculate_curve(enum dc_transfer_func_predefined  trans,
+		struct dc_transfer_func_distributed_points *points);
+
+bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
+				struct dc_transfer_func_distributed_points *points);
+
+bool calculate_user_regamma_coeff(struct dc_transfer_func *output_tf,
+		const struct regamma_lut *regamma);
+
+bool calculate_user_regamma_ramp(struct dc_transfer_func *output_tf,
+		const struct regamma_lut *regamma);
+
+
+#endif /* COLOR_MOD_COLOR_GAMMA_H_ */
diff --git a/drivers/gpu/drm/amd/display/modules/color/luts_1d.h b/drivers/gpu/drm/amd/display/modules/color/luts_1d.h
new file mode 100644
index 000000000..66b1fad57
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/color/luts_1d.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2016 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 LUTS_1D_H
+#define LUTS_1D_H
+
+#include "hw_shared.h"
+
+struct point_config {
+	uint32_t custom_float_x;
+	uint32_t custom_float_y;
+	uint32_t custom_float_slope;
+};
+
+struct lut_point {
+	uint32_t red;
+	uint32_t green;
+	uint32_t blue;
+	uint32_t delta_red;
+	uint32_t delta_green;
+	uint32_t delta_blue;
+};
+
+struct pwl_1dlut_parameter {
+	struct gamma_curve	arr_curve_points[34];
+	struct point_config	arr_points[2];
+	struct lut_point rgb_resulted[256];
+	uint32_t hw_points_num;
+};
+#endif // LUTS_1D_H
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/Makefile b/drivers/gpu/drm/amd/display/modules/freesync/Makefile
new file mode 100644
index 000000000..fb9a49978
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/freesync/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 'freesync' sub-module of DAL.
+#
+
+FREESYNC = freesync.o
+
+AMD_DAL_FREESYNC = $(addprefix $(AMDDALPATH)/modules/freesync/,$(FREESYNC))
+#$(info ************  DAL-FREE SYNC_MAKEFILE ************)
+
+AMD_DISPLAY_FILES += $(AMD_DAL_FREESYNC)
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
new file mode 100644
index 000000000..fa344ceaf
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -0,0 +1,1555 @@
+/*
+ * Copyright 2016 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 "dm_services.h"
+#include "dc.h"
+#include "mod_freesync.h"
+#include "core_types.h"
+
+#define MOD_FREESYNC_MAX_CONCURRENT_STREAMS  32
+
+/* Refresh rate ramp at a fixed rate of 65 Hz/second */
+#define STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME ((1000 / 60) * 65)
+/* Number of elements in the render times cache array */
+#define RENDER_TIMES_MAX_COUNT 10
+/* Threshold to exit BTR (to avoid frequent enter-exits at the lower limit) */
+#define BTR_EXIT_MARGIN 2000
+/* Number of consecutive frames to check before entering/exiting fixed refresh*/
+#define FIXED_REFRESH_ENTER_FRAME_COUNT 5
+#define FIXED_REFRESH_EXIT_FRAME_COUNT 5
+
+#define FREESYNC_REGISTRY_NAME "freesync_v1"
+
+#define FREESYNC_NO_STATIC_FOR_EXTERNAL_DP_REGKEY "DalFreeSyncNoStaticForExternalDp"
+
+#define FREESYNC_NO_STATIC_FOR_INTERNAL_REGKEY "DalFreeSyncNoStaticForInternal"
+
+#define FREESYNC_DEFAULT_REGKEY "LCDFreeSyncDefault"
+
+struct gradual_static_ramp {
+	bool ramp_is_active;
+	bool ramp_direction_is_up;
+	unsigned int ramp_current_frame_duration_in_ns;
+};
+
+struct freesync_time {
+	/* video (48Hz feature) related */
+	unsigned int update_duration_in_ns;
+
+	/* BTR/fixed refresh related */
+	unsigned int prev_time_stamp_in_us;
+
+	unsigned int min_render_time_in_us;
+	unsigned int max_render_time_in_us;
+
+	unsigned int render_times_index;
+	unsigned int render_times[RENDER_TIMES_MAX_COUNT];
+
+	unsigned int min_window;
+	unsigned int max_window;
+};
+
+struct below_the_range {
+	bool btr_active;
+	bool program_btr;
+
+	unsigned int mid_point_in_us;
+
+	unsigned int inserted_frame_duration_in_us;
+	unsigned int frames_to_insert;
+	unsigned int frame_counter;
+};
+
+struct fixed_refresh {
+	bool fixed_active;
+	bool program_fixed;
+	unsigned int frame_counter;
+};
+
+struct freesync_range {
+	unsigned int min_refresh;
+	unsigned int max_frame_duration;
+	unsigned int vmax;
+
+	unsigned int max_refresh;
+	unsigned int min_frame_duration;
+	unsigned int vmin;
+};
+
+struct freesync_state {
+	bool fullscreen;
+	bool static_screen;
+	bool video;
+
+	unsigned int vmin;
+	unsigned int vmax;
+
+	struct freesync_time time;
+
+	unsigned int nominal_refresh_rate_in_micro_hz;
+	bool windowed_fullscreen;
+
+	struct gradual_static_ramp static_ramp;
+	struct below_the_range btr;
+	struct fixed_refresh fixed_refresh;
+	struct freesync_range freesync_range;
+};
+
+struct freesync_entity {
+	struct dc_stream_state *stream;
+	struct mod_freesync_caps *caps;
+	struct freesync_state state;
+	struct mod_freesync_user_enable user_enable;
+};
+
+struct freesync_registry_options {
+	bool drr_external_supported;
+	bool drr_internal_supported;
+	bool lcd_freesync_default_set;
+	int lcd_freesync_default_value;
+};
+
+struct core_freesync {
+	struct mod_freesync public;
+	struct dc *dc;
+	struct freesync_registry_options opts;
+	struct freesync_entity *map;
+	int num_entities;
+};
+
+#define MOD_FREESYNC_TO_CORE(mod_freesync)\
+		container_of(mod_freesync, struct core_freesync, public)
+
+struct mod_freesync *mod_freesync_create(struct dc *dc)
+{
+	struct core_freesync *core_freesync =
+			kzalloc(sizeof(struct core_freesync), GFP_KERNEL);
+
+
+	struct persistent_data_flag flag;
+
+	int i, data = 0;
+
+	if (core_freesync == NULL)
+		goto fail_alloc_context;
+
+	core_freesync->map = kcalloc(MOD_FREESYNC_MAX_CONCURRENT_STREAMS,
+					sizeof(struct freesync_entity),
+					GFP_KERNEL);
+
+	if (core_freesync->map == NULL)
+		goto fail_alloc_map;
+
+	for (i = 0; i < MOD_FREESYNC_MAX_CONCURRENT_STREAMS; i++)
+		core_freesync->map[i].stream = NULL;
+
+	core_freesync->num_entities = 0;
+
+	if (dc == NULL)
+		goto fail_construct;
+
+	core_freesync->dc = dc;
+
+	/* Create initial module folder in registry for freesync enable data */
+	flag.save_per_edid = true;
+	flag.save_per_link = false;
+	dm_write_persistent_data(dc->ctx, NULL, FREESYNC_REGISTRY_NAME,
+			NULL, NULL, 0, &flag);
+	flag.save_per_edid = false;
+	flag.save_per_link = false;
+
+	if (dm_read_persistent_data(dc->ctx, NULL, NULL,
+			FREESYNC_NO_STATIC_FOR_INTERNAL_REGKEY,
+			&data, sizeof(data), &flag)) {
+		core_freesync->opts.drr_internal_supported =
+			(data & 1) ? false : true;
+	}
+
+	if (dm_read_persistent_data(dc->ctx, NULL, NULL,
+			FREESYNC_NO_STATIC_FOR_EXTERNAL_DP_REGKEY,
+			&data, sizeof(data), &flag)) {
+		core_freesync->opts.drr_external_supported =
+				(data & 1) ? false : true;
+	}
+
+	if (dm_read_persistent_data(dc->ctx, NULL, NULL,
+			FREESYNC_DEFAULT_REGKEY,
+			&data, sizeof(data), &flag)) {
+		core_freesync->opts.lcd_freesync_default_set = true;
+		core_freesync->opts.lcd_freesync_default_value = data;
+	} else {
+		core_freesync->opts.lcd_freesync_default_set = false;
+		core_freesync->opts.lcd_freesync_default_value = 0;
+	}
+
+	return &core_freesync->public;
+
+fail_construct:
+	kfree(core_freesync->map);
+
+fail_alloc_map:
+	kfree(core_freesync);
+
+fail_alloc_context:
+	return NULL;
+}
+
+void mod_freesync_destroy(struct mod_freesync *mod_freesync)
+{
+	if (mod_freesync != NULL) {
+		int i;
+		struct core_freesync *core_freesync =
+				MOD_FREESYNC_TO_CORE(mod_freesync);
+
+		for (i = 0; i < core_freesync->num_entities; i++)
+			if (core_freesync->map[i].stream)
+				dc_stream_release(core_freesync->map[i].stream);
+
+		kfree(core_freesync->map);
+
+		kfree(core_freesync);
+	}
+}
+
+/* Given a specific dc_stream* this function finds its equivalent
+ * on the core_freesync->map and returns the corresponding index
+ */
+static unsigned int map_index_from_stream(struct core_freesync *core_freesync,
+		struct dc_stream_state *stream)
+{
+	unsigned int index = 0;
+
+	for (index = 0; index < core_freesync->num_entities; index++) {
+		if (core_freesync->map[index].stream == stream) {
+			return index;
+		}
+	}
+	/* Could not find stream requested */
+	ASSERT(false);
+	return index;
+}
+
+bool mod_freesync_add_stream(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream, struct mod_freesync_caps *caps)
+{
+	struct dc  *dc = NULL;
+	struct core_freesync *core_freesync = NULL;
+	int persistent_freesync_enable = 0;
+	struct persistent_data_flag flag;
+	unsigned int nom_refresh_rate_uhz;
+	unsigned long long temp;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	dc = core_freesync->dc;
+
+	flag.save_per_edid = true;
+	flag.save_per_link = false;
+
+	if (core_freesync->num_entities < MOD_FREESYNC_MAX_CONCURRENT_STREAMS) {
+
+		dc_stream_retain(stream);
+
+		temp = stream->timing.pix_clk_khz;
+		temp *= 1000ULL * 1000ULL * 1000ULL;
+		temp = div_u64(temp, stream->timing.h_total);
+		temp = div_u64(temp, stream->timing.v_total);
+
+		nom_refresh_rate_uhz = (unsigned int) temp;
+
+		core_freesync->map[core_freesync->num_entities].stream = stream;
+		core_freesync->map[core_freesync->num_entities].caps = caps;
+
+		core_freesync->map[core_freesync->num_entities].state.
+			fullscreen = false;
+		core_freesync->map[core_freesync->num_entities].state.
+			static_screen = false;
+		core_freesync->map[core_freesync->num_entities].state.
+			video = false;
+		core_freesync->map[core_freesync->num_entities].state.time.
+			update_duration_in_ns = 0;
+		core_freesync->map[core_freesync->num_entities].state.
+			static_ramp.ramp_is_active = false;
+
+		/* get persistent data from registry */
+		if (dm_read_persistent_data(dc->ctx, stream->sink,
+					FREESYNC_REGISTRY_NAME,
+					"userenable", &persistent_freesync_enable,
+					sizeof(int), &flag)) {
+			core_freesync->map[core_freesync->num_entities].user_enable.
+				enable_for_gaming =
+				(persistent_freesync_enable & 1) ? true : false;
+			core_freesync->map[core_freesync->num_entities].user_enable.
+				enable_for_static =
+				(persistent_freesync_enable & 2) ? true : false;
+			core_freesync->map[core_freesync->num_entities].user_enable.
+				enable_for_video =
+				(persistent_freesync_enable & 4) ? true : false;
+		/* If FreeSync display and LCDFreeSyncDefault is set, use as default values write back to userenable */
+		} else if (caps->supported && (core_freesync->opts.lcd_freesync_default_set)) {
+			core_freesync->map[core_freesync->num_entities].user_enable.enable_for_gaming =
+				(core_freesync->opts.lcd_freesync_default_value & 1) ? true : false;
+			core_freesync->map[core_freesync->num_entities].user_enable.enable_for_static =
+				(core_freesync->opts.lcd_freesync_default_value & 2) ? true : false;
+			core_freesync->map[core_freesync->num_entities].user_enable.enable_for_video =
+				(core_freesync->opts.lcd_freesync_default_value & 4) ? true : false;
+			dm_write_persistent_data(dc->ctx, stream->sink,
+						FREESYNC_REGISTRY_NAME,
+						"userenable", &core_freesync->opts.lcd_freesync_default_value,
+						sizeof(int), &flag);
+		} else {
+			core_freesync->map[core_freesync->num_entities].user_enable.
+					enable_for_gaming = false;
+			core_freesync->map[core_freesync->num_entities].user_enable.
+					enable_for_static = false;
+			core_freesync->map[core_freesync->num_entities].user_enable.
+					enable_for_video = false;
+		}
+
+		if (caps->supported &&
+			nom_refresh_rate_uhz >= caps->min_refresh_in_micro_hz &&
+			nom_refresh_rate_uhz <= caps->max_refresh_in_micro_hz)
+			stream->ignore_msa_timing_param = 1;
+
+		core_freesync->num_entities++;
+		return true;
+	}
+	return false;
+}
+
+bool mod_freesync_remove_stream(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream)
+{
+	int i = 0;
+	struct core_freesync *core_freesync = NULL;
+	unsigned int index = 0;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	index = map_index_from_stream(core_freesync, stream);
+
+	dc_stream_release(core_freesync->map[index].stream);
+	core_freesync->map[index].stream = NULL;
+	/* To remove this entity, shift everything after down */
+	for (i = index; i < core_freesync->num_entities - 1; i++)
+		core_freesync->map[i] = core_freesync->map[i + 1];
+	core_freesync->num_entities--;
+	return true;
+}
+
+static void adjust_vmin_vmax(struct core_freesync *core_freesync,
+				struct dc_stream_state **streams,
+				int num_streams,
+				int map_index,
+				unsigned int v_total_min,
+				unsigned int v_total_max)
+{
+	if (num_streams == 0 || streams == NULL || num_streams > 1)
+		return;
+
+	core_freesync->map[map_index].state.vmin = v_total_min;
+	core_freesync->map[map_index].state.vmax = v_total_max;
+
+	dc_stream_adjust_vmin_vmax(core_freesync->dc, streams,
+				num_streams, v_total_min,
+				v_total_max);
+}
+
+
+static void update_stream_freesync_context(struct core_freesync *core_freesync,
+		struct dc_stream_state *stream)
+{
+	unsigned int index;
+	struct freesync_context *ctx;
+
+	ctx = &stream->freesync_ctx;
+
+	index = map_index_from_stream(core_freesync, stream);
+
+	ctx->supported = core_freesync->map[index].caps->supported;
+	ctx->enabled = (core_freesync->map[index].user_enable.enable_for_gaming ||
+		core_freesync->map[index].user_enable.enable_for_video ||
+		core_freesync->map[index].user_enable.enable_for_static);
+	ctx->active = (core_freesync->map[index].state.fullscreen ||
+		core_freesync->map[index].state.video ||
+		core_freesync->map[index].state.static_ramp.ramp_is_active);
+	ctx->min_refresh_in_micro_hz =
+			core_freesync->map[index].caps->min_refresh_in_micro_hz;
+	ctx->nominal_refresh_in_micro_hz = core_freesync->
+		map[index].state.nominal_refresh_rate_in_micro_hz;
+
+}
+
+static void update_stream(struct core_freesync *core_freesync,
+		struct dc_stream_state *stream)
+{
+	unsigned int index = map_index_from_stream(core_freesync, stream);
+	if (core_freesync->map[index].caps->supported) {
+		stream->ignore_msa_timing_param = 1;
+		update_stream_freesync_context(core_freesync, stream);
+	}
+}
+
+static void calc_freesync_range(struct core_freesync *core_freesync,
+		struct dc_stream_state *stream,
+		struct freesync_state *state,
+		unsigned int min_refresh_in_uhz,
+		unsigned int max_refresh_in_uhz)
+{
+	unsigned int min_frame_duration_in_ns = 0, max_frame_duration_in_ns = 0;
+	unsigned int index = map_index_from_stream(core_freesync, stream);
+	uint32_t vtotal = stream->timing.v_total;
+
+	if ((min_refresh_in_uhz == 0) || (max_refresh_in_uhz == 0)) {
+		state->freesync_range.min_refresh =
+				state->nominal_refresh_rate_in_micro_hz;
+		state->freesync_range.max_refresh =
+				state->nominal_refresh_rate_in_micro_hz;
+
+		state->freesync_range.max_frame_duration = 0;
+		state->freesync_range.min_frame_duration = 0;
+
+		state->freesync_range.vmax = vtotal;
+		state->freesync_range.vmin = vtotal;
+
+		return;
+	}
+
+	min_frame_duration_in_ns = ((unsigned int) (div64_u64(
+					(1000000000ULL * 1000000),
+					max_refresh_in_uhz)));
+	max_frame_duration_in_ns = ((unsigned int) (div64_u64(
+		(1000000000ULL * 1000000),
+		min_refresh_in_uhz)));
+
+	state->freesync_range.min_refresh = min_refresh_in_uhz;
+	state->freesync_range.max_refresh = max_refresh_in_uhz;
+
+	state->freesync_range.max_frame_duration = max_frame_duration_in_ns;
+	state->freesync_range.min_frame_duration = min_frame_duration_in_ns;
+
+	state->freesync_range.vmax = div64_u64(div64_u64(((unsigned long long)(
+		max_frame_duration_in_ns) * stream->timing.pix_clk_khz),
+		stream->timing.h_total), 1000000);
+	state->freesync_range.vmin = div64_u64(div64_u64(((unsigned long long)(
+		min_frame_duration_in_ns) * stream->timing.pix_clk_khz),
+		stream->timing.h_total), 1000000);
+
+	/* vmin/vmax cannot be less than vtotal */
+	if (state->freesync_range.vmin < vtotal) {
+		/* Error of 1 is permissible */
+		ASSERT((state->freesync_range.vmin + 1) >= vtotal);
+		state->freesync_range.vmin = vtotal;
+	}
+
+	if (state->freesync_range.vmax < vtotal) {
+		/* Error of 1 is permissible */
+		ASSERT((state->freesync_range.vmax + 1) >= vtotal);
+		state->freesync_range.vmax = vtotal;
+	}
+
+	/* Determine whether BTR can be supported */
+	if (max_frame_duration_in_ns >=
+			2 * min_frame_duration_in_ns)
+		core_freesync->map[index].caps->btr_supported = true;
+	else
+		core_freesync->map[index].caps->btr_supported = false;
+
+	/* Cache the time variables */
+	state->time.max_render_time_in_us =
+		max_frame_duration_in_ns / 1000;
+	state->time.min_render_time_in_us =
+		min_frame_duration_in_ns / 1000;
+	state->btr.mid_point_in_us =
+		(max_frame_duration_in_ns +
+		min_frame_duration_in_ns) / 2000;
+}
+
+static void calc_v_total_from_duration(struct dc_stream_state *stream,
+		unsigned int duration_in_ns, int *v_total_nominal)
+{
+	*v_total_nominal = div64_u64(div64_u64(((unsigned long long)(
+				duration_in_ns) * stream->timing.pix_clk_khz),
+				stream->timing.h_total), 1000000);
+}
+
+static void calc_v_total_for_static_ramp(struct core_freesync *core_freesync,
+		struct dc_stream_state *stream,
+		unsigned int index, int *v_total)
+{
+	unsigned int frame_duration = 0;
+
+	struct gradual_static_ramp *static_ramp_variables =
+				&core_freesync->map[index].state.static_ramp;
+
+	/* Calc ratio between new and current frame duration with 3 digit */
+	unsigned int frame_duration_ratio = div64_u64(1000000,
+		(1000 +  div64_u64(((unsigned long long)(
+		STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME) *
+		static_ramp_variables->ramp_current_frame_duration_in_ns),
+		1000000000)));
+
+	/* Calculate delta between new and current frame duration in ns */
+	unsigned int frame_duration_delta = div64_u64(((unsigned long long)(
+		static_ramp_variables->ramp_current_frame_duration_in_ns) *
+		(1000 - frame_duration_ratio)), 1000);
+
+	/* Adjust frame duration delta based on ratio between current and
+	 * standard frame duration (frame duration at 60 Hz refresh rate).
+	 */
+	unsigned int ramp_rate_interpolated = div64_u64(((unsigned long long)(
+		frame_duration_delta) * static_ramp_variables->
+		ramp_current_frame_duration_in_ns), 16666666);
+
+	/* Going to a higher refresh rate (lower frame duration) */
+	if (static_ramp_variables->ramp_direction_is_up) {
+		/* reduce frame duration */
+		static_ramp_variables->ramp_current_frame_duration_in_ns -=
+			ramp_rate_interpolated;
+
+		/* min frame duration */
+		frame_duration = ((unsigned int) (div64_u64(
+			(1000000000ULL * 1000000),
+			core_freesync->map[index].state.
+			nominal_refresh_rate_in_micro_hz)));
+
+		/* adjust for frame duration below min */
+		if (static_ramp_variables->ramp_current_frame_duration_in_ns <=
+			frame_duration) {
+
+			static_ramp_variables->ramp_is_active = false;
+			static_ramp_variables->
+				ramp_current_frame_duration_in_ns =
+				frame_duration;
+		}
+	/* Going to a lower refresh rate (larger frame duration) */
+	} else {
+		/* increase frame duration */
+		static_ramp_variables->ramp_current_frame_duration_in_ns +=
+			ramp_rate_interpolated;
+
+		/* max frame duration */
+		frame_duration = ((unsigned int) (div64_u64(
+			(1000000000ULL * 1000000),
+			core_freesync->map[index].caps->min_refresh_in_micro_hz)));
+
+		/* adjust for frame duration above max */
+		if (static_ramp_variables->ramp_current_frame_duration_in_ns >=
+			frame_duration) {
+
+			static_ramp_variables->ramp_is_active = false;
+			static_ramp_variables->
+				ramp_current_frame_duration_in_ns =
+				frame_duration;
+		}
+	}
+
+	calc_v_total_from_duration(stream, static_ramp_variables->
+		ramp_current_frame_duration_in_ns, v_total);
+}
+
+static void reset_freesync_state_variables(struct freesync_state* state)
+{
+	state->static_ramp.ramp_is_active = false;
+	if (state->nominal_refresh_rate_in_micro_hz)
+		state->static_ramp.ramp_current_frame_duration_in_ns =
+			((unsigned int) (div64_u64(
+			(1000000000ULL * 1000000),
+			state->nominal_refresh_rate_in_micro_hz)));
+
+	state->btr.btr_active = false;
+	state->btr.frame_counter = 0;
+	state->btr.frames_to_insert = 0;
+	state->btr.inserted_frame_duration_in_us = 0;
+	state->btr.program_btr = false;
+
+	state->fixed_refresh.fixed_active = false;
+	state->fixed_refresh.program_fixed = false;
+}
+/*
+ * Sets freesync mode on a stream depending on current freesync state.
+ */
+static bool set_freesync_on_streams(struct core_freesync *core_freesync,
+		struct dc_stream_state **streams, int num_streams)
+{
+	int v_total_nominal = 0, v_total_min = 0, v_total_max = 0;
+	unsigned int stream_idx, map_index = 0;
+	struct freesync_state *state;
+
+	if (num_streams == 0 || streams == NULL || num_streams > 1)
+		return false;
+
+	for (stream_idx = 0; stream_idx < num_streams; stream_idx++) {
+
+		map_index = map_index_from_stream(core_freesync,
+				streams[stream_idx]);
+
+		state = &core_freesync->map[map_index].state;
+
+		if (core_freesync->map[map_index].caps->supported) {
+
+			/* Fullscreen has the topmost priority. If the
+			 * fullscreen bit is set, we are in a fullscreen
+			 * application where it should not matter if it is
+			 * static screen. We should not check the static_screen
+			 * or video bit.
+			 *
+			 * Special cases of fullscreen include btr and fixed
+			 * refresh. We program btr on every flip and involves
+			 * programming full range right before the last inserted frame.
+			 * However, we do not want to program the full freesync range
+			 * when fixed refresh is active, because we only program
+			 * that logic once and this will override it.
+			 */
+			if (core_freesync->map[map_index].user_enable.
+				enable_for_gaming == true &&
+				state->fullscreen == true &&
+				state->fixed_refresh.fixed_active == false) {
+				/* Enable freesync */
+
+				v_total_min = state->freesync_range.vmin;
+				v_total_max = state->freesync_range.vmax;
+
+				/* Update the freesync context for the stream */
+				update_stream_freesync_context(core_freesync,
+						streams[stream_idx]);
+
+				adjust_vmin_vmax(core_freesync, streams,
+						num_streams, map_index,
+						v_total_min,
+						v_total_max);
+
+				return true;
+
+			} else if (core_freesync->map[map_index].user_enable.
+				enable_for_video && state->video == true) {
+				/* Enable 48Hz feature */
+
+				calc_v_total_from_duration(streams[stream_idx],
+					state->time.update_duration_in_ns,
+					&v_total_nominal);
+
+				/* Program only if v_total_nominal is in range*/
+				if (v_total_nominal >=
+					streams[stream_idx]->timing.v_total) {
+
+					/* Update the freesync context for
+					 * the stream
+					 */
+					update_stream_freesync_context(
+						core_freesync,
+						streams[stream_idx]);
+
+					adjust_vmin_vmax(
+						core_freesync, streams,
+						num_streams, map_index,
+						v_total_nominal,
+						v_total_nominal);
+				}
+				return true;
+
+			} else {
+				/* Disable freesync */
+				v_total_nominal = streams[stream_idx]->
+					timing.v_total;
+
+				/* Update the freesync context for
+				 * the stream
+				 */
+				update_stream_freesync_context(
+					core_freesync,
+					streams[stream_idx]);
+
+				adjust_vmin_vmax(core_freesync, streams,
+						num_streams, map_index,
+						v_total_nominal,
+						v_total_nominal);
+
+				/* Reset the cached variables */
+				reset_freesync_state_variables(state);
+
+				return true;
+			}
+		} else {
+			/* Disable freesync */
+			v_total_nominal = streams[stream_idx]->
+				timing.v_total;
+			/*
+			 * we have to reset drr always even sink does
+			 * not support freesync because a former stream has
+			 * be programmed
+			 */
+			adjust_vmin_vmax(core_freesync, streams,
+						num_streams, map_index,
+						v_total_nominal,
+						v_total_nominal);
+			/* Reset the cached variables */
+			reset_freesync_state_variables(state);
+		}
+
+	}
+
+	return false;
+}
+
+static void set_static_ramp_variables(struct core_freesync *core_freesync,
+		unsigned int index, bool enable_static_screen)
+{
+	unsigned int frame_duration = 0;
+	unsigned int nominal_refresh_rate = core_freesync->map[index].state.
+			nominal_refresh_rate_in_micro_hz;
+	unsigned int min_refresh_rate= core_freesync->map[index].caps->
+			min_refresh_in_micro_hz;
+	struct gradual_static_ramp *static_ramp_variables =
+			&core_freesync->map[index].state.static_ramp;
+
+	/* If we are ENABLING static screen, refresh rate should go DOWN.
+	 * If we are DISABLING static screen, refresh rate should go UP.
+	 */
+	if (enable_static_screen)
+		static_ramp_variables->ramp_direction_is_up = false;
+	else
+		static_ramp_variables->ramp_direction_is_up = true;
+
+	/* If ramp is not active, set initial frame duration depending on
+	 * whether we are enabling/disabling static screen mode. If the ramp is
+	 * already active, ramp should continue in the opposite direction
+	 * starting with the current frame duration
+	 */
+	if (!static_ramp_variables->ramp_is_active) {
+		if (enable_static_screen == true) {
+			/* Going to lower refresh rate, so start from max
+			 * refresh rate (min frame duration)
+			 */
+			frame_duration = ((unsigned int) (div64_u64(
+				(1000000000ULL * 1000000),
+				nominal_refresh_rate)));
+		} else {
+			/* Going to higher refresh rate, so start from min
+			 * refresh rate (max frame duration)
+			 */
+			frame_duration = ((unsigned int) (div64_u64(
+				(1000000000ULL * 1000000),
+				min_refresh_rate)));
+		}
+		static_ramp_variables->
+			ramp_current_frame_duration_in_ns = frame_duration;
+
+		static_ramp_variables->ramp_is_active = true;
+	}
+}
+
+void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams)
+{
+	unsigned int index, v_total, inserted_frame_v_total = 0;
+	unsigned int min_frame_duration_in_ns, vmax, vmin = 0;
+	struct freesync_state *state;
+	struct core_freesync *core_freesync = NULL;
+	struct dc_static_screen_events triggers = {0};
+
+	if (mod_freesync == NULL)
+		return;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+
+	if (core_freesync->num_entities == 0)
+		return;
+
+	index = map_index_from_stream(core_freesync,
+		streams[0]);
+
+	if (core_freesync->map[index].caps->supported == false)
+		return;
+
+	state = &core_freesync->map[index].state;
+
+	/* Below the Range Logic */
+
+	/* Only execute if in fullscreen mode */
+	if (state->fullscreen == true &&
+		core_freesync->map[index].user_enable.enable_for_gaming &&
+		core_freesync->map[index].caps->btr_supported &&
+		state->btr.btr_active) {
+
+		/* TODO: pass in flag for Pre-DCE12 ASIC
+		 * in order for frame variable duration to take affect,
+		 * it needs to be done one VSYNC early, which is at
+		 * frameCounter == 1.
+		 * For DCE12 and newer updates to V_TOTAL_MIN/MAX
+		 * will take affect on current frame
+		 */
+		if (state->btr.frames_to_insert == state->btr.frame_counter) {
+
+			min_frame_duration_in_ns = ((unsigned int) (div64_u64(
+					(1000000000ULL * 1000000),
+					state->nominal_refresh_rate_in_micro_hz)));
+
+			vmin = state->freesync_range.vmin;
+
+			inserted_frame_v_total = vmin;
+
+			if (min_frame_duration_in_ns / 1000)
+				inserted_frame_v_total =
+					state->btr.inserted_frame_duration_in_us *
+					vmin / (min_frame_duration_in_ns / 1000);
+
+			/* Set length of inserted frames as v_total_max*/
+			vmax = inserted_frame_v_total;
+			vmin = inserted_frame_v_total;
+
+			/* Program V_TOTAL */
+			adjust_vmin_vmax(core_freesync, streams,
+						num_streams, index,
+						vmin, vmax);
+		}
+
+		if (state->btr.frame_counter > 0)
+			state->btr.frame_counter--;
+
+		/* Restore FreeSync */
+		if (state->btr.frame_counter == 0)
+			set_freesync_on_streams(core_freesync, streams, num_streams);
+	}
+
+	/* If in fullscreen freesync mode or in video, do not program
+	 * static screen ramp values
+	 */
+	if (state->fullscreen == true || state->video == true) {
+
+		state->static_ramp.ramp_is_active = false;
+
+		return;
+	}
+
+	/* Gradual Static Screen Ramping Logic */
+
+	/* Execute if ramp is active and user enabled freesync static screen*/
+	if (state->static_ramp.ramp_is_active &&
+		core_freesync->map[index].user_enable.enable_for_static) {
+
+		calc_v_total_for_static_ramp(core_freesync, streams[0],
+				index, &v_total);
+
+		/* Update the freesync context for the stream */
+		update_stream_freesync_context(core_freesync, streams[0]);
+
+		/* Program static screen ramp values */
+		adjust_vmin_vmax(core_freesync, streams,
+					num_streams, index,
+					v_total,
+					v_total);
+
+		triggers.overlay_update = true;
+		triggers.surface_update = true;
+
+		dc_stream_set_static_screen_events(core_freesync->dc, streams,
+						   num_streams, &triggers);
+	}
+}
+
+void mod_freesync_update_state(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams,
+		struct mod_freesync_params *freesync_params)
+{
+	bool freesync_program_required = false;
+	unsigned int stream_index;
+	struct freesync_state *state;
+	struct core_freesync *core_freesync = NULL;
+	struct dc_static_screen_events triggers = {0};
+
+	if (mod_freesync == NULL)
+		return;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+
+	if (core_freesync->num_entities == 0)
+		return;
+
+	for(stream_index = 0; stream_index < num_streams; stream_index++) {
+
+		unsigned int map_index = map_index_from_stream(core_freesync,
+				streams[stream_index]);
+
+		bool is_embedded = dc_is_embedded_signal(
+				streams[stream_index]->sink->sink_signal);
+
+		struct freesync_registry_options *opts = &core_freesync->opts;
+
+		state = &core_freesync->map[map_index].state;
+
+		switch (freesync_params->state){
+		case FREESYNC_STATE_FULLSCREEN:
+			state->fullscreen = freesync_params->enable;
+			freesync_program_required = true;
+			state->windowed_fullscreen =
+					freesync_params->windowed_fullscreen;
+			break;
+		case FREESYNC_STATE_STATIC_SCREEN:
+			/* Static screen ramp is disabled by default, but can
+			 * be enabled through regkey.
+			 */
+			if ((is_embedded && opts->drr_internal_supported) ||
+				(!is_embedded && opts->drr_external_supported))
+
+				if (state->static_screen !=
+						freesync_params->enable) {
+
+					/* Change the state flag */
+					state->static_screen =
+							freesync_params->enable;
+
+					/* Update static screen ramp */
+					set_static_ramp_variables(core_freesync,
+						map_index,
+						freesync_params->enable);
+				}
+			/* We program the ramp starting next VUpdate */
+			break;
+		case FREESYNC_STATE_VIDEO:
+			/* Change core variables only if there is a change*/
+			if(freesync_params->update_duration_in_ns !=
+				state->time.update_duration_in_ns) {
+
+				state->video = freesync_params->enable;
+				state->time.update_duration_in_ns =
+					freesync_params->update_duration_in_ns;
+
+				freesync_program_required = true;
+			}
+			break;
+		case FREESYNC_STATE_NONE:
+			/* handle here to avoid warning */
+			break;
+		}
+	}
+
+	/* Update mask */
+	triggers.overlay_update = true;
+	triggers.surface_update = true;
+
+	dc_stream_set_static_screen_events(core_freesync->dc, streams,
+					   num_streams, &triggers);
+
+	if (freesync_program_required)
+		/* Program freesync according to current state*/
+		set_freesync_on_streams(core_freesync, streams, num_streams);
+}
+
+
+bool mod_freesync_get_state(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		struct mod_freesync_params *freesync_params)
+{
+	unsigned int index = 0;
+	struct core_freesync *core_freesync = NULL;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	index = map_index_from_stream(core_freesync, stream);
+
+	if (core_freesync->map[index].state.fullscreen) {
+		freesync_params->state = FREESYNC_STATE_FULLSCREEN;
+		freesync_params->enable = true;
+	} else if (core_freesync->map[index].state.static_screen) {
+		freesync_params->state = FREESYNC_STATE_STATIC_SCREEN;
+		freesync_params->enable = true;
+	} else if (core_freesync->map[index].state.video) {
+		freesync_params->state = FREESYNC_STATE_VIDEO;
+		freesync_params->enable = true;
+	} else {
+		freesync_params->state = FREESYNC_STATE_NONE;
+		freesync_params->enable = false;
+	}
+
+	freesync_params->update_duration_in_ns =
+		core_freesync->map[index].state.time.update_duration_in_ns;
+
+	freesync_params->windowed_fullscreen =
+			core_freesync->map[index].state.windowed_fullscreen;
+
+	return true;
+}
+
+bool mod_freesync_set_user_enable(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams,
+		struct mod_freesync_user_enable *user_enable)
+{
+	unsigned int stream_index, map_index;
+	int persistent_data = 0;
+	struct persistent_data_flag flag;
+	struct dc  *dc = NULL;
+	struct core_freesync *core_freesync = NULL;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	dc = core_freesync->dc;
+
+	flag.save_per_edid = true;
+	flag.save_per_link = false;
+
+	for(stream_index = 0; stream_index < num_streams;
+			stream_index++){
+
+		map_index = map_index_from_stream(core_freesync,
+				streams[stream_index]);
+
+		core_freesync->map[map_index].user_enable = *user_enable;
+
+		/* Write persistent data in registry*/
+		if (core_freesync->map[map_index].user_enable.
+				enable_for_gaming)
+			persistent_data = persistent_data | 1;
+		if (core_freesync->map[map_index].user_enable.
+				enable_for_static)
+			persistent_data = persistent_data | 2;
+		if (core_freesync->map[map_index].user_enable.
+				enable_for_video)
+			persistent_data = persistent_data | 4;
+
+		dm_write_persistent_data(dc->ctx,
+					streams[stream_index]->sink,
+					FREESYNC_REGISTRY_NAME,
+					"userenable",
+					&persistent_data,
+					sizeof(int),
+					&flag);
+	}
+
+	set_freesync_on_streams(core_freesync, streams, num_streams);
+
+	return true;
+}
+
+bool mod_freesync_get_user_enable(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		struct mod_freesync_user_enable *user_enable)
+{
+	unsigned int index = 0;
+	struct core_freesync *core_freesync = NULL;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	index = map_index_from_stream(core_freesync, stream);
+
+	*user_enable = core_freesync->map[index].user_enable;
+
+	return true;
+}
+
+bool mod_freesync_get_static_ramp_active(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		bool *is_ramp_active)
+{
+	unsigned int index = 0;
+	struct core_freesync *core_freesync = NULL;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	index = map_index_from_stream(core_freesync, stream);
+
+	*is_ramp_active =
+		core_freesync->map[index].state.static_ramp.ramp_is_active;
+
+	return true;
+}
+
+bool mod_freesync_override_min_max(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *streams,
+		unsigned int min_refresh,
+		unsigned int max_refresh,
+		struct mod_freesync_caps *caps)
+{
+	unsigned int index = 0;
+	struct core_freesync *core_freesync;
+	struct freesync_state *state;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	index = map_index_from_stream(core_freesync, streams);
+	state = &core_freesync->map[index].state;
+
+	if (max_refresh == 0)
+		max_refresh = state->nominal_refresh_rate_in_micro_hz;
+
+	if (min_refresh == 0) {
+		/* Restore defaults */
+		calc_freesync_range(core_freesync, streams, state,
+			core_freesync->map[index].caps->
+			min_refresh_in_micro_hz,
+			state->nominal_refresh_rate_in_micro_hz);
+	} else {
+		calc_freesync_range(core_freesync, streams,
+				state,
+				min_refresh,
+				max_refresh);
+
+		/* Program vtotal min/max */
+		adjust_vmin_vmax(core_freesync, &streams, 1, index,
+				state->freesync_range.vmin,
+				state->freesync_range.vmax);
+	}
+
+	if (min_refresh != 0 &&
+			dc_is_embedded_signal(streams->sink->sink_signal) &&
+			(max_refresh - min_refresh >= 10000000)) {
+		caps->supported = true;
+		caps->min_refresh_in_micro_hz = min_refresh;
+		caps->max_refresh_in_micro_hz = max_refresh;
+	}
+
+	/* Update the stream */
+	update_stream(core_freesync, streams);
+
+	return true;
+}
+
+bool mod_freesync_get_min_max(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		unsigned int *min_refresh,
+		unsigned int *max_refresh)
+{
+	unsigned int index = 0;
+	struct core_freesync *core_freesync = NULL;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	index = map_index_from_stream(core_freesync, stream);
+
+	*min_refresh =
+		core_freesync->map[index].state.freesync_range.min_refresh;
+	*max_refresh =
+		core_freesync->map[index].state.freesync_range.max_refresh;
+
+	return true;
+}
+
+bool mod_freesync_get_vmin_vmax(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		unsigned int *vmin,
+		unsigned int *vmax)
+{
+	unsigned int index = 0;
+	struct core_freesync *core_freesync = NULL;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	index = map_index_from_stream(core_freesync, stream);
+
+	*vmin =
+		core_freesync->map[index].state.freesync_range.vmin;
+	*vmax =
+		core_freesync->map[index].state.freesync_range.vmax;
+
+	return true;
+}
+
+bool mod_freesync_get_v_position(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		unsigned int *nom_v_pos,
+		unsigned int *v_pos)
+{
+	unsigned int index = 0;
+	struct core_freesync *core_freesync = NULL;
+	struct crtc_position position;
+
+	if (mod_freesync == NULL)
+		return false;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+	index = map_index_from_stream(core_freesync, stream);
+
+	if (dc_stream_get_crtc_position(core_freesync->dc, &stream, 1,
+					&position.vertical_count,
+					&position.nominal_vcount)) {
+
+		*nom_v_pos = position.nominal_vcount;
+		*v_pos = position.vertical_count;
+
+		return true;
+	}
+
+	return false;
+}
+
+void mod_freesync_notify_mode_change(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams)
+{
+	unsigned int stream_index, map_index;
+	struct freesync_state *state;
+	struct core_freesync *core_freesync = NULL;
+	struct dc_static_screen_events triggers = {0};
+	unsigned long long temp = 0;
+
+	if (mod_freesync == NULL)
+		return;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+
+	for (stream_index = 0; stream_index < num_streams; stream_index++) {
+		map_index = map_index_from_stream(core_freesync,
+				streams[stream_index]);
+
+		state = &core_freesync->map[map_index].state;
+
+		/* Update the field rate for new timing */
+		temp = streams[stream_index]->timing.pix_clk_khz;
+		temp *= 1000ULL * 1000ULL * 1000ULL;
+		temp = div_u64(temp,
+				streams[stream_index]->timing.h_total);
+		temp = div_u64(temp,
+				streams[stream_index]->timing.v_total);
+		state->nominal_refresh_rate_in_micro_hz =
+				(unsigned int) temp;
+
+		if (core_freesync->map[map_index].caps->supported) {
+
+			/* Update the stream */
+			update_stream(core_freesync, streams[stream_index]);
+
+			/* Calculate vmin/vmax and refresh rate for
+			 * current mode
+			 */
+			calc_freesync_range(core_freesync, *streams, state,
+				core_freesync->map[map_index].caps->
+				min_refresh_in_micro_hz,
+				state->nominal_refresh_rate_in_micro_hz);
+
+			/* Update mask */
+			triggers.overlay_update = true;
+			triggers.surface_update = true;
+
+			dc_stream_set_static_screen_events(core_freesync->dc,
+							   streams, num_streams,
+							   &triggers);
+		}
+	}
+
+	/* Program freesync according to current state*/
+	set_freesync_on_streams(core_freesync, streams, num_streams);
+}
+
+/* Add the timestamps to the cache and determine whether BTR programming
+ * is required, depending on the times calculated
+ */
+static void update_timestamps(struct core_freesync *core_freesync,
+		const struct dc_stream_state *stream, unsigned int map_index,
+		unsigned int last_render_time_in_us)
+{
+	struct freesync_state *state = &core_freesync->map[map_index].state;
+
+	state->time.render_times[state->time.render_times_index] =
+			last_render_time_in_us;
+	state->time.render_times_index++;
+
+	if (state->time.render_times_index >= RENDER_TIMES_MAX_COUNT)
+		state->time.render_times_index = 0;
+
+	if (last_render_time_in_us + BTR_EXIT_MARGIN <
+		state->time.max_render_time_in_us) {
+
+		/* Exit Below the Range */
+		if (state->btr.btr_active) {
+
+			state->btr.program_btr = true;
+			state->btr.btr_active = false;
+			state->btr.frame_counter = 0;
+
+		/* Exit Fixed Refresh mode */
+		} else if (state->fixed_refresh.fixed_active) {
+
+			state->fixed_refresh.frame_counter++;
+
+			if (state->fixed_refresh.frame_counter >
+					FIXED_REFRESH_EXIT_FRAME_COUNT) {
+				state->fixed_refresh.frame_counter = 0;
+				state->fixed_refresh.program_fixed = true;
+				state->fixed_refresh.fixed_active = false;
+			}
+		}
+
+	} else if (last_render_time_in_us > state->time.max_render_time_in_us) {
+
+		/* Enter Below the Range */
+		if (!state->btr.btr_active &&
+			core_freesync->map[map_index].caps->btr_supported) {
+
+			state->btr.program_btr = true;
+			state->btr.btr_active = true;
+
+		/* Enter Fixed Refresh mode */
+		} else if (!state->fixed_refresh.fixed_active &&
+			!core_freesync->map[map_index].caps->btr_supported) {
+
+			state->fixed_refresh.frame_counter++;
+
+			if (state->fixed_refresh.frame_counter >
+					FIXED_REFRESH_ENTER_FRAME_COUNT) {
+				state->fixed_refresh.frame_counter = 0;
+				state->fixed_refresh.program_fixed = true;
+				state->fixed_refresh.fixed_active = true;
+			}
+		}
+	}
+
+	/* When Below the Range is active, must react on every frame */
+	if (state->btr.btr_active)
+		state->btr.program_btr = true;
+}
+
+static void apply_below_the_range(struct core_freesync *core_freesync,
+		struct dc_stream_state *stream, unsigned int map_index,
+		unsigned int last_render_time_in_us)
+{
+	unsigned int inserted_frame_duration_in_us = 0;
+	unsigned int mid_point_frames_ceil = 0;
+	unsigned int mid_point_frames_floor = 0;
+	unsigned int frame_time_in_us = 0;
+	unsigned int delta_from_mid_point_in_us_1 = 0xFFFFFFFF;
+	unsigned int delta_from_mid_point_in_us_2 = 0xFFFFFFFF;
+	unsigned int frames_to_insert = 0;
+	unsigned int min_frame_duration_in_ns = 0;
+	struct freesync_state *state = &core_freesync->map[map_index].state;
+
+	if (!state->btr.program_btr)
+		return;
+
+	state->btr.program_btr = false;
+
+	min_frame_duration_in_ns = ((unsigned int) (div64_u64(
+		(1000000000ULL * 1000000),
+		state->nominal_refresh_rate_in_micro_hz)));
+
+	/* Program BTR */
+
+	/* BTR set to "not active" so disengage */
+	if (!state->btr.btr_active)
+
+		/* Restore FreeSync */
+		set_freesync_on_streams(core_freesync, &stream, 1);
+
+	/* BTR set to "active" so engage */
+	else {
+
+		/* Calculate number of midPoint frames that could fit within
+		 * the render time interval- take ceil of this value
+		 */
+		mid_point_frames_ceil = (last_render_time_in_us +
+			state->btr.mid_point_in_us- 1) /
+			state->btr.mid_point_in_us;
+
+		if (mid_point_frames_ceil > 0) {
+
+			frame_time_in_us = last_render_time_in_us /
+				mid_point_frames_ceil;
+			delta_from_mid_point_in_us_1 =
+				(state->btr.mid_point_in_us >
+				frame_time_in_us) ?
+				(state->btr.mid_point_in_us - frame_time_in_us):
+				(frame_time_in_us - state->btr.mid_point_in_us);
+		}
+
+		/* Calculate number of midPoint frames that could fit within
+		 * the render time interval- take floor of this value
+		 */
+		mid_point_frames_floor = last_render_time_in_us /
+			state->btr.mid_point_in_us;
+
+		if (mid_point_frames_floor > 0) {
+
+			frame_time_in_us = last_render_time_in_us /
+				mid_point_frames_floor;
+			delta_from_mid_point_in_us_2 =
+				(state->btr.mid_point_in_us >
+				frame_time_in_us) ?
+				(state->btr.mid_point_in_us - frame_time_in_us):
+				(frame_time_in_us - state->btr.mid_point_in_us);
+		}
+
+		/* Choose number of frames to insert based on how close it
+		 * can get to the mid point of the variable range.
+		 */
+		if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2)
+			frames_to_insert = mid_point_frames_ceil;
+		else
+			frames_to_insert = mid_point_frames_floor;
+
+		/* Either we've calculated the number of frames to insert,
+		 * or we need to insert min duration frames
+		 */
+		if (frames_to_insert > 0)
+			inserted_frame_duration_in_us = last_render_time_in_us /
+							frames_to_insert;
+
+		if (inserted_frame_duration_in_us <
+			state->time.min_render_time_in_us)
+
+			inserted_frame_duration_in_us =
+				state->time.min_render_time_in_us;
+
+		/* Cache the calculated variables */
+		state->btr.inserted_frame_duration_in_us =
+			inserted_frame_duration_in_us;
+		state->btr.frames_to_insert = frames_to_insert;
+		state->btr.frame_counter = frames_to_insert;
+
+	}
+}
+
+static void apply_fixed_refresh(struct core_freesync *core_freesync,
+		struct dc_stream_state *stream, unsigned int map_index)
+{
+	unsigned int vmin = 0, vmax = 0;
+	struct freesync_state *state = &core_freesync->map[map_index].state;
+
+	if (!state->fixed_refresh.program_fixed)
+		return;
+
+	state->fixed_refresh.program_fixed = false;
+
+	/* Program Fixed Refresh */
+
+	/* Fixed Refresh set to "not active" so disengage */
+	if (!state->fixed_refresh.fixed_active) {
+		set_freesync_on_streams(core_freesync, &stream, 1);
+
+	/* Fixed Refresh set to "active" so engage (fix to max) */
+	} else {
+
+		vmin = state->freesync_range.vmin;
+		vmax = vmin;
+		adjust_vmin_vmax(core_freesync, &stream, map_index,
+					1, vmin, vmax);
+	}
+}
+
+void mod_freesync_pre_update_plane_addresses(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams,
+		unsigned int curr_time_stamp_in_us)
+{
+	unsigned int stream_index, map_index, last_render_time_in_us = 0;
+	struct core_freesync *core_freesync = NULL;
+
+	if (mod_freesync == NULL)
+		return;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+
+	for (stream_index = 0; stream_index < num_streams; stream_index++) {
+
+		map_index = map_index_from_stream(core_freesync,
+						streams[stream_index]);
+
+		if (core_freesync->map[map_index].caps->supported) {
+
+			last_render_time_in_us = curr_time_stamp_in_us -
+					core_freesync->map[map_index].state.time.
+					prev_time_stamp_in_us;
+
+			/* Add the timestamps to the cache and determine
+			 * whether BTR program is required
+			 */
+			update_timestamps(core_freesync, streams[stream_index],
+					map_index, last_render_time_in_us);
+
+			if (core_freesync->map[map_index].state.fullscreen &&
+				core_freesync->map[map_index].user_enable.
+				enable_for_gaming) {
+
+				if (core_freesync->map[map_index].caps->btr_supported) {
+
+					apply_below_the_range(core_freesync,
+						streams[stream_index], map_index,
+						last_render_time_in_us);
+				} else {
+					apply_fixed_refresh(core_freesync,
+						streams[stream_index], map_index);
+				}
+			}
+
+			core_freesync->map[map_index].state.time.
+				prev_time_stamp_in_us = curr_time_stamp_in_us;
+		}
+
+	}
+}
+
+void mod_freesync_get_settings(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams,
+		unsigned int *v_total_min, unsigned int *v_total_max,
+		unsigned int *event_triggers,
+		unsigned int *window_min, unsigned int *window_max,
+		unsigned int *lfc_mid_point_in_us,
+		unsigned int *inserted_frames,
+		unsigned int *inserted_duration_in_us)
+{
+	unsigned int stream_index, map_index;
+	struct core_freesync *core_freesync = NULL;
+
+	if (mod_freesync == NULL)
+		return;
+
+	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+
+	for (stream_index = 0; stream_index < num_streams; stream_index++) {
+
+		map_index = map_index_from_stream(core_freesync,
+						streams[stream_index]);
+
+		if (core_freesync->map[map_index].caps->supported) {
+			struct freesync_state state =
+					core_freesync->map[map_index].state;
+			*v_total_min = state.vmin;
+			*v_total_max = state.vmax;
+			*event_triggers = 0;
+			*window_min = state.time.min_window;
+			*window_max = state.time.max_window;
+			*lfc_mid_point_in_us = state.btr.mid_point_in_us;
+			*inserted_frames = state.btr.frames_to_insert;
+			*inserted_duration_in_us =
+					state.btr.inserted_frame_duration_in_us;
+		}
+
+	}
+}
+
diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h b/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
new file mode 100644
index 000000000..f083e1619
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
@@ -0,0 +1,176 @@
+/*
+ * Copyright 2016 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
+ *
+ */
+
+
+
+
+/*
+ * Copyright 2016 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 MOD_FREESYNC_H_
+#define MOD_FREESYNC_H_
+
+#include "dm_services.h"
+
+struct mod_freesync *mod_freesync_create(struct dc *dc);
+void mod_freesync_destroy(struct mod_freesync *mod_freesync);
+
+struct mod_freesync {
+	int dummy;
+};
+
+enum mod_freesync_state {
+	FREESYNC_STATE_NONE,
+	FREESYNC_STATE_FULLSCREEN,
+	FREESYNC_STATE_STATIC_SCREEN,
+	FREESYNC_STATE_VIDEO
+};
+
+enum mod_freesync_user_enable_mask {
+	FREESYNC_USER_ENABLE_STATIC = 0x1,
+	FREESYNC_USER_ENABLE_VIDEO = 0x2,
+	FREESYNC_USER_ENABLE_GAMING = 0x4
+};
+
+struct mod_freesync_user_enable {
+	bool enable_for_static;
+	bool enable_for_video;
+	bool enable_for_gaming;
+};
+
+struct mod_freesync_caps {
+	bool supported;
+	unsigned int min_refresh_in_micro_hz;
+	unsigned int max_refresh_in_micro_hz;
+
+	bool btr_supported;
+};
+
+struct mod_freesync_params {
+	enum mod_freesync_state state;
+	bool enable;
+	unsigned int update_duration_in_ns;
+	bool windowed_fullscreen;
+};
+
+/*
+ * Add stream to be tracked by module
+ */
+bool mod_freesync_add_stream(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream, struct mod_freesync_caps *caps);
+
+/*
+ * Remove stream to be tracked by module
+ */
+bool mod_freesync_remove_stream(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream);
+
+/*
+ * Update the freesync state flags for each display and program
+ * freesync accordingly
+ */
+void mod_freesync_update_state(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams,
+		struct mod_freesync_params *freesync_params);
+
+bool mod_freesync_get_state(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		struct mod_freesync_params *freesync_params);
+
+bool mod_freesync_set_user_enable(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams,
+		struct mod_freesync_user_enable *user_enable);
+
+bool mod_freesync_get_user_enable(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		struct mod_freesync_user_enable *user_enable);
+
+bool mod_freesync_get_static_ramp_active(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		bool *is_ramp_active);
+
+bool mod_freesync_override_min_max(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *streams,
+		unsigned int min_refresh,
+		unsigned int max_refresh,
+		struct mod_freesync_caps *caps);
+
+bool mod_freesync_get_min_max(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		unsigned int *min_refresh,
+		unsigned int *max_refresh);
+
+bool mod_freesync_get_vmin_vmax(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		unsigned int *vmin,
+		unsigned int *vmax);
+
+bool mod_freesync_get_v_position(struct mod_freesync *mod_freesync,
+		struct dc_stream_state *stream,
+		unsigned int *nom_v_pos,
+		unsigned int *v_pos);
+
+void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams);
+
+void mod_freesync_notify_mode_change(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams);
+
+void mod_freesync_pre_update_plane_addresses(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams,
+		unsigned int curr_time_stamp);
+
+void mod_freesync_get_settings(struct mod_freesync *mod_freesync,
+		struct dc_stream_state **streams, int num_streams,
+		unsigned int *v_total_min, unsigned int *v_total_max,
+		unsigned int *event_triggers,
+		unsigned int *window_min, unsigned int *window_max,
+		unsigned int *lfc_mid_point_in_us,
+		unsigned int *inserted_frames,
+		unsigned int *inserted_duration_in_us);
+
+#endif
diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_stats.h b/drivers/gpu/drm/amd/display/modules/inc/mod_stats.h
new file mode 100644
index 000000000..3812094b5
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/inc/mod_stats.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2016 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_INC_MOD_STATS_H_
+#define MODULES_INC_MOD_STATS_H_
+
+#include "dm_services.h"
+
+struct mod_stats {
+	int dummy;
+};
+
+struct mod_stats_caps {
+	bool dummy;
+};
+
+struct mod_stats *mod_stats_create(struct dc *dc);
+
+void mod_stats_destroy(struct mod_stats *mod_stats);
+
+bool mod_stats_init(struct mod_stats *mod_stats);
+
+void mod_stats_dump(struct mod_stats *mod_stats);
+
+void mod_stats_reset_data(struct mod_stats *mod_stats);
+
+void mod_stats_update_event(struct mod_stats *mod_stats,
+		char *event_string,
+		unsigned int length);
+
+void mod_stats_update_flip(struct mod_stats *mod_stats,
+		unsigned long timestamp_in_ns);
+
+void mod_stats_update_vupdate(struct mod_stats *mod_stats,
+		unsigned long timestamp_in_ns);
+
+void mod_stats_update_freesync(struct mod_stats *mod_stats,
+		unsigned int v_total_min,
+		unsigned int v_total_max,
+		unsigned int event_triggers,
+		unsigned int window_min,
+		unsigned int window_max,
+		unsigned int lfc_mid_point_in_us,
+		unsigned int inserted_frames,
+		unsigned int inserted_frame_duration_in_us);
+
+#endif /* MODULES_INC_MOD_STATS_H_ */
diff --git a/drivers/gpu/drm/amd/display/modules/stats/stats.c b/drivers/gpu/drm/amd/display/modules/stats/stats.c
new file mode 100644
index 000000000..3d4c1b1ab
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/modules/stats/stats.c
@@ -0,0 +1,452 @@
+/*
+ * Copyright 2016 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 "mod_stats.h"
+#include "dm_services.h"
+#include "dc.h"
+#include "core_types.h"
+
+#define DAL_STATS_ENABLE_REGKEY			"DalStatsEnable"
+#define DAL_STATS_ENABLE_REGKEY_DEFAULT		0x00000000
+#define DAL_STATS_ENABLE_REGKEY_ENABLED		0x00000001
+
+#define DAL_STATS_ENTRIES_REGKEY		"DalStatsEntries"
+#define DAL_STATS_ENTRIES_REGKEY_DEFAULT	0x00350000
+#define DAL_STATS_ENTRIES_REGKEY_MAX		0x01000000
+
+#define DAL_STATS_EVENT_ENTRIES_DEFAULT		0x00000100
+
+#define MOD_STATS_NUM_VSYNCS			5
+#define MOD_STATS_EVENT_STRING_MAX		512
+
+struct stats_time_cache {
+	unsigned int entry_id;
+
+	unsigned long flip_timestamp_in_ns;
+	unsigned long vupdate_timestamp_in_ns;
+
+	unsigned int render_time_in_us;
+	unsigned int avg_render_time_in_us_last_ten;
+	unsigned int v_sync_time_in_us[MOD_STATS_NUM_VSYNCS];
+	unsigned int num_vsync_between_flips;
+
+	unsigned int flip_to_vsync_time_in_us;
+	unsigned int vsync_to_flip_time_in_us;
+
+	unsigned int min_window;
+	unsigned int max_window;
+	unsigned int v_total_min;
+	unsigned int v_total_max;
+	unsigned int event_triggers;
+
+	unsigned int lfc_mid_point_in_us;
+	unsigned int num_frames_inserted;
+	unsigned int inserted_duration_in_us;
+
+	unsigned int flags;
+};
+
+struct stats_event_cache {
+	unsigned int entry_id;
+	char event_string[MOD_STATS_EVENT_STRING_MAX];
+};
+
+struct core_stats {
+	struct mod_stats public;
+	struct dc *dc;
+
+	bool enabled;
+	unsigned int entries;
+	unsigned int event_entries;
+	unsigned int entry_id;
+
+	struct stats_time_cache *time;
+	unsigned int index;
+
+	struct stats_event_cache *events;
+	unsigned int event_index;
+
+};
+
+#define MOD_STATS_TO_CORE(mod_stats)\
+		container_of(mod_stats, struct core_stats, public)
+
+bool mod_stats_init(struct mod_stats *mod_stats)
+{
+	bool result = false;
+	struct core_stats *core_stats = NULL;
+	struct dc *dc = NULL;
+
+	if (mod_stats == NULL)
+		return false;
+
+	core_stats = MOD_STATS_TO_CORE(mod_stats);
+	dc = core_stats->dc;
+
+	return result;
+}
+
+struct mod_stats *mod_stats_create(struct dc *dc)
+{
+	struct core_stats *core_stats = NULL;
+	struct persistent_data_flag flag;
+	unsigned int reg_data;
+	int i = 0;
+
+	if (dc == NULL)
+		goto fail_construct;
+
+	core_stats = kzalloc(sizeof(struct core_stats), GFP_KERNEL);
+
+	if (core_stats == NULL)
+		goto fail_construct;
+
+	core_stats->dc = dc;
+
+	core_stats->enabled = DAL_STATS_ENABLE_REGKEY_DEFAULT;
+	if (dm_read_persistent_data(dc->ctx, NULL, NULL,
+			DAL_STATS_ENABLE_REGKEY,
+			&reg_data, sizeof(unsigned int), &flag))
+		core_stats->enabled = reg_data;
+
+	if (core_stats->enabled) {
+		core_stats->entries = DAL_STATS_ENTRIES_REGKEY_DEFAULT;
+		if (dm_read_persistent_data(dc->ctx, NULL, NULL,
+				DAL_STATS_ENTRIES_REGKEY,
+				&reg_data, sizeof(unsigned int), &flag)) {
+			if (reg_data > DAL_STATS_ENTRIES_REGKEY_MAX)
+				core_stats->entries = DAL_STATS_ENTRIES_REGKEY_MAX;
+			else
+				core_stats->entries = reg_data;
+		}
+		core_stats->time = kcalloc(core_stats->entries,
+						sizeof(struct stats_time_cache),
+						GFP_KERNEL);
+
+		if (core_stats->time == NULL)
+			goto fail_construct_time;
+
+		core_stats->event_entries = DAL_STATS_EVENT_ENTRIES_DEFAULT;
+		core_stats->events = kcalloc(core_stats->event_entries,
+					     sizeof(struct stats_event_cache),
+					     GFP_KERNEL);
+
+		if (core_stats->events == NULL)
+			goto fail_construct_events;
+
+	} else {
+		core_stats->entries = 0;
+	}
+
+	/* Purposely leave index 0 unused so we don't need special logic to
+	 * handle calculation cases that depend on previous flip data.
+	 */
+	core_stats->index = 1;
+	core_stats->event_index = 0;
+
+	// Keeps track of ordering within the different stats structures
+	core_stats->entry_id = 0;
+
+	return &core_stats->public;
+
+fail_construct_events:
+	kfree(core_stats->time);
+
+fail_construct_time:
+	kfree(core_stats);
+
+fail_construct:
+	return NULL;
+}
+
+void mod_stats_destroy(struct mod_stats *mod_stats)
+{
+	if (mod_stats != NULL) {
+		struct core_stats *core_stats = MOD_STATS_TO_CORE(mod_stats);
+
+		if (core_stats->time != NULL)
+			kfree(core_stats->time);
+
+		if (core_stats->events != NULL)
+			kfree(core_stats->events);
+
+		kfree(core_stats);
+	}
+}
+
+void mod_stats_dump(struct mod_stats *mod_stats)
+{
+	struct dc  *dc = NULL;
+	struct dal_logger *logger = NULL;
+	struct core_stats *core_stats = NULL;
+	struct stats_time_cache *time = NULL;
+	struct stats_event_cache *events = NULL;
+	unsigned int time_index = 1;
+	unsigned int event_index = 0;
+	unsigned int index = 0;
+	struct log_entry log_entry;
+
+	if (mod_stats == NULL)
+		return;
+
+	core_stats = MOD_STATS_TO_CORE(mod_stats);
+	dc = core_stats->dc;
+	logger = dc->ctx->logger;
+	time = core_stats->time;
+	events = core_stats->events;
+
+	DISPLAY_STATS_BEGIN(log_entry);
+
+	DISPLAY_STATS("==Display Caps==\n");
+
+	DISPLAY_STATS("==Display Stats==\n");
+
+	DISPLAY_STATS("%10s %10s %10s %10s %10s"
+			" %11s %11s %17s %10s %14s"
+			" %10s %10s %10s %10s %10s"
+			" %10s %10s %10s %10s\n",
+		"render", "avgRender",
+		"minWindow", "midPoint", "maxWindow",
+		"vsyncToFlip", "flipToVsync", "vsyncsBetweenFlip",
+		"numFrame", "insertDuration",
+		"vTotalMin", "vTotalMax", "eventTrigs",
+		"vSyncTime1", "vSyncTime2", "vSyncTime3",
+		"vSyncTime4", "vSyncTime5", "flags");
+
+	for (int i = 0; i < core_stats->entry_id; i++) {
+		if (event_index < core_stats->event_index &&
+				i == events[event_index].entry_id) {
+			DISPLAY_STATS("==Event==%s\n", events[event_index].event_string);
+			event_index++;
+		} else if (time_index < core_stats->index &&
+				i == time[time_index].entry_id) {
+			DISPLAY_STATS("%10u %10u %10u %10u %10u"
+					" %11u %11u %17u %10u %14u"
+					" %10u %10u %10u %10u %10u"
+					" %10u %10u %10u %10u\n",
+				time[time_index].render_time_in_us,
+				time[time_index].avg_render_time_in_us_last_ten,
+				time[time_index].min_window,
+				time[time_index].lfc_mid_point_in_us,
+				time[time_index].max_window,
+				time[time_index].vsync_to_flip_time_in_us,
+				time[time_index].flip_to_vsync_time_in_us,
+				time[time_index].num_vsync_between_flips,
+				time[time_index].num_frames_inserted,
+				time[time_index].inserted_duration_in_us,
+				time[time_index].v_total_min,
+				time[time_index].v_total_max,
+				time[time_index].event_triggers,
+				time[time_index].v_sync_time_in_us[0],
+				time[time_index].v_sync_time_in_us[1],
+				time[time_index].v_sync_time_in_us[2],
+				time[time_index].v_sync_time_in_us[3],
+				time[time_index].v_sync_time_in_us[4],
+				time[time_index].flags);
+
+			time_index++;
+		}
+	}
+
+	DISPLAY_STATS_END(log_entry);
+}
+
+void mod_stats_reset_data(struct mod_stats *mod_stats)
+{
+	struct core_stats *core_stats = NULL;
+	struct stats_time_cache *time = NULL;
+	unsigned int index = 0;
+
+	if (mod_stats == NULL)
+		return;
+
+	core_stats = MOD_STATS_TO_CORE(mod_stats);
+
+	memset(core_stats->time, 0,
+		sizeof(struct stats_time_cache) * core_stats->entries);
+
+	memset(core_stats->events, 0,
+		sizeof(struct stats_event_cache) * core_stats->event_entries);
+
+	core_stats->index = 1;
+	core_stats->event_index = 0;
+
+	// Keeps track of ordering within the different stats structures
+	core_stats->entry_id = 0;
+}
+
+void mod_stats_update_event(struct mod_stats *mod_stats,
+		char *event_string,
+		unsigned int length)
+{
+	struct core_stats *core_stats = NULL;
+	struct stats_event_cache *events = NULL;
+	unsigned int index = 0;
+	unsigned int copy_length = 0;
+
+	if (mod_stats == NULL)
+		return;
+
+	core_stats = MOD_STATS_TO_CORE(mod_stats);
+
+	if (core_stats->event_index >= core_stats->event_entries)
+		return;
+
+	events = core_stats->events;
+	index = core_stats->event_index;
+
+	copy_length = length;
+	if (length > MOD_STATS_EVENT_STRING_MAX)
+		copy_length = MOD_STATS_EVENT_STRING_MAX;
+
+	memcpy(&events[index].event_string, event_string, copy_length);
+	events[index].event_string[copy_length - 1] = '\0';
+
+	events[index].entry_id = core_stats->entry_id;
+	core_stats->event_index++;
+	core_stats->entry_id++;
+}
+
+void mod_stats_update_flip(struct mod_stats *mod_stats,
+		unsigned long timestamp_in_ns)
+{
+	struct core_stats *core_stats = NULL;
+	struct stats_time_cache *time = NULL;
+	unsigned int index = 0;
+
+	if (mod_stats == NULL)
+		return;
+
+	core_stats = MOD_STATS_TO_CORE(mod_stats);
+
+	if (core_stats->index >= core_stats->entries)
+		return;
+
+	time = core_stats->time;
+	index = core_stats->index;
+
+	time[index].flip_timestamp_in_ns = timestamp_in_ns;
+	time[index].render_time_in_us =
+		(timestamp_in_ns - time[index - 1].flip_timestamp_in_ns) / 1000;
+
+	if (index >= 10) {
+		for (unsigned int i = 0; i < 10; i++)
+			time[index].avg_render_time_in_us_last_ten +=
+					time[index - i].render_time_in_us;
+		time[index].avg_render_time_in_us_last_ten /= 10;
+	}
+
+	if (time[index].num_vsync_between_flips > 0)
+		time[index].vsync_to_flip_time_in_us =
+			(timestamp_in_ns -
+				time[index].vupdate_timestamp_in_ns) / 1000;
+	else
+		time[index].vsync_to_flip_time_in_us =
+			(timestamp_in_ns -
+				time[index - 1].vupdate_timestamp_in_ns) / 1000;
+
+	time[index].entry_id = core_stats->entry_id;
+	core_stats->index++;
+	core_stats->entry_id++;
+}
+
+void mod_stats_update_vupdate(struct mod_stats *mod_stats,
+		unsigned long timestamp_in_ns)
+{
+	struct core_stats *core_stats = NULL;
+	struct stats_time_cache *time = NULL;
+	unsigned int index = 0;
+	unsigned int num_vsyncs = 0;
+	unsigned int prev_vsync_in_ns = 0;
+
+	if (mod_stats == NULL)
+		return;
+
+	core_stats = MOD_STATS_TO_CORE(mod_stats);
+
+	if (core_stats->index >= core_stats->entries)
+		return;
+
+	time = core_stats->time;
+	index = core_stats->index;
+	num_vsyncs = time[index].num_vsync_between_flips;
+
+	if (num_vsyncs < MOD_STATS_NUM_VSYNCS) {
+		if (num_vsyncs == 0) {
+			prev_vsync_in_ns =
+				time[index - 1].vupdate_timestamp_in_ns;
+
+			time[index].flip_to_vsync_time_in_us =
+				(timestamp_in_ns -
+					time[index - 1].flip_timestamp_in_ns) /
+					1000;
+		} else {
+			prev_vsync_in_ns =
+				time[index].vupdate_timestamp_in_ns;
+		}
+
+		time[index].v_sync_time_in_us[num_vsyncs] =
+			(timestamp_in_ns - prev_vsync_in_ns) / 1000;
+	}
+
+	time[index].vupdate_timestamp_in_ns = timestamp_in_ns;
+	time[index].num_vsync_between_flips++;
+}
+
+void mod_stats_update_freesync(struct mod_stats *mod_stats,
+		unsigned int v_total_min,
+		unsigned int v_total_max,
+		unsigned int event_triggers,
+		unsigned int window_min,
+		unsigned int window_max,
+		unsigned int lfc_mid_point_in_us,
+		unsigned int inserted_frames,
+		unsigned int inserted_duration_in_us)
+{
+	struct core_stats *core_stats = NULL;
+	struct stats_time_cache *time = NULL;
+	unsigned int index = 0;
+
+	if (mod_stats == NULL)
+		return;
+
+	core_stats = MOD_STATS_TO_CORE(mod_stats);
+
+	if (core_stats->index >= core_stats->entries)
+		return;
+
+	time = core_stats->time;
+	index = core_stats->index;
+
+	time[index].v_total_min = v_total_min;
+	time[index].v_total_max = v_total_max;
+	time[index].event_triggers = event_triggers;
+	time[index].min_window = window_min;
+	time[index].max_window = window_max;
+	time[index].lfc_mid_point_in_us = lfc_mid_point_in_us;
+	time[index].num_frames_inserted = inserted_frames;
+	time[index].inserted_duration_in_us = inserted_duration_in_us;
+}
+