root/drivers/gpu/drm/amd/display/modules/power/power_abm.c
// SPDX-License-Identifier: MIT
//
// Copyright 2026 Advanced Micro Devices, Inc.

#include "dm_services.h"
#include "dc.h"
#include "mod_power.h"
#include "core_types.h"
#include "dmcu.h"
#include "abm.h"
#include "power_helpers.h"
#include "dce/dmub_psr.h"
#include "dal_asic_id.h"
#include "link_service.h"
#include <linux/math.h>

#define DC_TRACE_LEVEL_MESSAGE(...) /* do nothing */
#define DC_TRACE_LEVEL_MESSAGEP(...) /* do nothing */

#define DIV_ROUNDUP(a, b) (((a)+((b)/2))/(b))
#define bswap16_based_on_endian(big_endian, value) \
        ((big_endian) ? cpu_to_be16(value) : cpu_to_le16(value))

/* Possible Min Reduction config from least aggressive to most aggressive
 *  0    1     2     3     4     5     6     7     8     9     10    11   12
 * 100  98.0 94.1  94.1  85.1  80.3  75.3  69.4  60.0  57.6  50.2  49.8  40.0 %
 */
static const unsigned char min_reduction_table[13] = {
0xff, 0xfa, 0xf0, 0xf0, 0xd9, 0xcd, 0xc0, 0xb1, 0x99, 0x93, 0x80, 0x82, 0x66};

/* Possible Max Reduction configs from least aggressive to most aggressive
 *  0    1     2     3     4     5     6     7     8     9     10    11   12
 * 96.1 89.8 85.1  80.3  69.4  64.7  64.7  50.2  39.6  30.2  30.2  30.2  19.6 %
 */
static const unsigned char max_reduction_table[13] = {
0xf5, 0xe5, 0xd9, 0xcd, 0xb1, 0xa5, 0xa5, 0x80, 0x65, 0x4d, 0x4d, 0x4d, 0x32};

/* Possible ABM 2.2 Min Reduction configs from least aggressive to most aggressive
 *  0    1     2     3     4     5     6     7     8     9     10    11   12
 * 100  100   100   100   100   100   100   100  100  92.2  83.1  75.3  75.3 %
 */
static const unsigned char min_reduction_table_v_2_2[13] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xeb, 0xd4, 0xc0, 0xc0};

/* Possible ABM 2.2 Max Reduction configs from least aggressive to most aggressive
 *  0    1     2     3     4     5     6     7     8     9     10    11   12
 * 96.1 89.8 74.9  69.4  64.7  52.2  48.6  39.6  30.2  25.1  19.6  12.5  12.5 %
 */
static const unsigned char max_reduction_table_v_2_2[13] = {
0xf5, 0xe5, 0xbf, 0xb1, 0xa5, 0x85, 0x7c, 0x65, 0x4d, 0x40, 0x32, 0x20, 0x20};

/* Predefined ABM configuration sets. We may have different configuration sets
 * in order to satisfy different power/quality requirements.
 */
static const unsigned char abm_config[abm_defines_max_config][abm_defines_max_level] = {
/*  ABM Level 1,    ABM Level 2,    ABM Level 3,    ABM Level 4 */
{       2,              5,              7,              8       },      /* Default - Medium aggressiveness */
{       2,              5,              8,              11      },      /* Alt #1  - Increased aggressiveness */
{       0,              2,              4,              8       },      /* Alt #2  - Minimal aggressiveness */
{       3,              6,              10,             12      },      /* Alt #3  - Super aggressiveness */
};

struct abm_parameters {
        unsigned char min_reduction;
        unsigned char max_reduction;
        unsigned char bright_pos_gain;
        unsigned char dark_pos_gain;
        unsigned char brightness_gain;
        unsigned char contrast_factor;
        unsigned char deviation_gain;
        unsigned char min_knee;
        unsigned char max_knee;
        unsigned short blRampReduction;
        unsigned short blRampStart;
};

static const struct abm_parameters abm_settings_config0[abm_defines_max_level] = {
//  min_red  max_red  bright_pos  dark_pos  bright_gain  contrast  dev   min_knee  max_knee  blRed    blStart
        {0xff,   0xbf,    0x20,       0x00,     0xff,        0x99,     0xb3, 0x40,     0xe0,     0xf777,  0xcccc},
        {0xde,   0x85,    0x20,       0x00,     0xe0,        0x90,     0xa8, 0x40,     0xc8,     0xf777,  0xcccc},
        {0xb0,   0x50,    0x20,       0x00,     0xc0,        0x88,     0x78, 0x70,     0xa0,     0xeeee,  0x9999},
        {0x82,   0x40,    0x20,       0x00,     0x00,        0xb8,     0xb3, 0x70,     0x70,     0xe333,  0xb333},
};

static const struct abm_parameters abm_settings_config1[abm_defines_max_level] = {
//  min_red  max_red  bright_pos  dark_pos  bright_gain  contrast  dev   min_knee  max_knee  blRed  blStart
        {0xf0,   0xd9,    0x20,       0x00,     0x00,        0xff,     0xb3, 0x70,     0x70,     0xcccc,  0xcccc},
        {0xcd,   0xa5,    0x20,       0x00,     0x00,        0xff,     0xb3, 0x70,     0x70,     0xcccc,  0xcccc},
        {0x99,   0x65,    0x20,       0x00,     0x00,        0xff,     0xb3, 0x70,     0x70,     0xcccc,  0xcccc},
        {0x82,   0x4d,    0x20,       0x00,     0x00,        0xff,     0xb3, 0x70,     0x70,     0xcccc,  0xcccc},
};

static const struct abm_parameters abm_settings_config2[abm_defines_max_level] = {
//  min_red  max_red  bright_pos  dark_pos  bright_gain  contrast  dev   min_knee  max_knee  blRed    blStart
        {0xf0,   0xbf,    0x20,       0x00,     0x88,        0x99,     0xb3, 0x40,     0xe0,    0x0000,  0xcccc},
        {0xd8,   0x85,    0x20,       0x00,     0x70,        0x90,     0xa8, 0x40,     0xc8,    0x0700,  0xb333},
        {0xb8,   0x58,    0x20,       0x00,     0x64,        0x88,     0x78, 0x70,     0xa0,    0x7000,  0x9999},
        {0x82,   0x40,    0x20,       0x00,     0x00,        0xb8,     0xb3, 0x70,     0x70,    0xc333,  0xb333},
};

static const struct abm_parameters * const abm_settings[] = {
        abm_settings_config0,
        abm_settings_config1,
        abm_settings_config2,
};

static const struct dm_bl_data_point custom_backlight_curve0[] = {
                {2, 14}, {4, 16}, {6, 18}, {8, 21}, {10, 23}, {12, 26}, {14, 29}, {16, 32}, {18, 35},
                {20, 38}, {22, 41}, {24, 44}, {26, 48}, {28, 52}, {30, 55}, {32, 59}, {34, 62},
                {36, 67}, {38, 71}, {40, 75}, {42, 80}, {44, 84}, {46, 88}, {48, 93}, {50, 98},
                {52, 103}, {54, 108}, {56, 113}, {58, 118}, {60, 123}, {62, 129}, {64, 135}, {66, 140},
                {68, 146}, {70, 152}, {72, 158}, {74, 164}, {76, 171}, {78, 177}, {80, 183}, {82, 190},
                {84, 197}, {86, 204}, {88, 211}, {90, 218}, {92, 225}, {94, 232}, {96, 240}, {98, 247}};

struct custom_backlight_profile {
        uint8_t  ac_level_percentage;
        uint8_t  dc_level_percentage;
        uint8_t  min_input_signal;
        uint8_t  max_input_signal;
        uint8_t  num_data_points;
        const struct dm_bl_data_point *data_points;
};

static const struct custom_backlight_profile custom_backlight_profiles[] = {
                {100, 32, 12, 255, ARRAY_SIZE(custom_backlight_curve0), custom_backlight_curve0},
};

#define NUM_AMBI_LEVEL    5
#define NUM_AGGR_LEVEL    4
#define NUM_POWER_FN_SEGS 8
#define NUM_BL_CURVE_SEGS 16
#define IRAM_SIZE 256

#define IRAM_RESERVE_AREA_START_V2 0xF0  // reserve 0xF0~0xF6 are write by DMCU only
#define IRAM_RESERVE_AREA_END_V2 0xF6  // reserve 0xF0~0xF6 are write by DMCU only

#define IRAM_RESERVE_AREA_START_V2_2 0xF0  // reserve 0xF0~0xFF are write by DMCU only
#define IRAM_RESERVE_AREA_END_V2_2 0xFF  // reserve 0xF0~0xFF are write by DMCU only

#pragma pack(push, 1)
/* NOTE: iRAM is 256B in size */
struct iram_table_v_2 {
        /* flags                      */
        uint16_t min_abm_backlight;                                     /* 0x00 U16  */

        /* parameters for ABM2.0 algorithm */
        uint8_t min_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];          /* 0x02 U0.8 */
        uint8_t max_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];          /* 0x16 U0.8 */
        uint8_t bright_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];        /* 0x2a U2.6 */
        uint8_t bright_neg_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];        /* 0x3e U2.6 */
        uint8_t dark_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];          /* 0x52 U2.6 */
        uint8_t dark_neg_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];          /* 0x66 U2.6 */
        uint8_t iir_curve[NUM_AMBI_LEVEL];                              /* 0x7a U0.8 */
        uint8_t deviation_gain;                                         /* 0x7f U0.8 */

        /* parameters for crgb conversion */
        uint16_t crgb_thresh[NUM_POWER_FN_SEGS];                        /* 0x80 U3.13 */
        uint16_t crgb_offset[NUM_POWER_FN_SEGS];                        /* 0x90 U1.15 */
        uint16_t crgb_slope[NUM_POWER_FN_SEGS];                         /* 0xa0 U4.12 */

        /* parameters for custom curve */
        /* thresholds for brightness --> backlight */
        uint16_t backlight_thresholds[NUM_BL_CURVE_SEGS];               /* 0xb0 U16.0 */
        /* offsets for brightness --> backlight */
        uint16_t backlight_offsets[NUM_BL_CURVE_SEGS];                  /* 0xd0 U16.0 */

        /* For reading PSR State directly from IRAM */
        uint8_t psr_state;                                              /* 0xf0       */
        uint8_t dmcu_mcp_interface_version;                             /* 0xf1       */
        uint8_t dmcu_abm_feature_version;                               /* 0xf2       */
        uint8_t dmcu_psr_feature_version;                               /* 0xf3       */
        uint16_t dmcu_version;                                          /* 0xf4       */
        uint8_t dmcu_state;                                             /* 0xf6       */

        uint16_t blRampReduction;                                       /* 0xf7       */
        uint16_t blRampStart;                                           /* 0xf9       */
        uint8_t dummy5;                                                 /* 0xfb       */
        uint8_t dummy6;                                                 /* 0xfc       */
        uint8_t dummy7;                                                 /* 0xfd       */
        uint8_t dummy8;                                                 /* 0xfe       */
        uint8_t dummy9;                                                 /* 0xff       */
};

struct iram_table_v_2_2 {
        /* flags                      */
        uint16_t flags;                                                 /* 0x00 U16  */

        /* parameters for ABM2.2 algorithm */
        uint8_t min_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];          /* 0x02 U0.8 */
        uint8_t max_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];          /* 0x16 U0.8 */
        uint8_t bright_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];        /* 0x2a U2.6 */
        uint8_t dark_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL];          /* 0x3e U2.6 */
        uint8_t hybrid_factor[NUM_AGGR_LEVEL];                          /* 0x52 U0.8 */
        uint8_t contrast_factor[NUM_AGGR_LEVEL];                        /* 0x56 U0.8 */
        uint8_t deviation_gain[NUM_AGGR_LEVEL];                         /* 0x5a U0.8 */
        uint8_t iir_curve[NUM_AMBI_LEVEL];                              /* 0x5e U0.8 */
        uint8_t min_knee[NUM_AGGR_LEVEL];                               /* 0x63 U0.8 */
        uint8_t max_knee[NUM_AGGR_LEVEL];                               /* 0x67 U0.8 */
        uint16_t min_abm_backlight;                                     /* 0x6b U16  */
        uint8_t pad[19];                                                /* 0x6d U0.8 */

        /* parameters for crgb conversion */
        uint16_t crgb_thresh[NUM_POWER_FN_SEGS];                        /* 0x80 U3.13 */
        uint16_t crgb_offset[NUM_POWER_FN_SEGS];                        /* 0x90 U1.15 */
        uint16_t crgb_slope[NUM_POWER_FN_SEGS];                         /* 0xa0 U4.12 */

        /* parameters for custom curve */
        /* thresholds for brightness --> backlight */
        uint16_t backlight_thresholds[NUM_BL_CURVE_SEGS];               /* 0xb0 U16.0 */
        /* offsets for brightness --> backlight */
        uint16_t backlight_offsets[NUM_BL_CURVE_SEGS];                  /* 0xd0 U16.0 */

        /* For reading PSR State directly from IRAM */
        uint8_t psr_state;                                              /* 0xf0       */
        uint8_t dmcu_mcp_interface_version;                             /* 0xf1       */
        uint8_t dmcu_abm_feature_version;                               /* 0xf2       */
        uint8_t dmcu_psr_feature_version;                               /* 0xf3       */
        uint16_t dmcu_version;                                          /* 0xf4       */
        uint8_t dmcu_state;                                             /* 0xf6       */

        uint8_t dummy1;                                                 /* 0xf7       */
        uint8_t dummy2;                                                 /* 0xf8       */
        uint8_t dummy3;                                                 /* 0xf9       */
        uint8_t dummy4;                                                 /* 0xfa       */
        uint8_t dummy5;                                                 /* 0xfb       */
        uint8_t dummy6;                                                 /* 0xfc       */
        uint8_t dummy7;                                                 /* 0xfd       */
        uint8_t dummy8;                                                 /* 0xfe       */
        uint8_t dummy9;                                                 /* 0xff       */
};
#pragma pack(pop)

#define MOD_POWER_MAX_CONCURRENT_STREAMS 32
#define SMOOTH_BRIGHTNESS_ADJUSTMENT_TIME_IN_MS 500

/* If system or panel does not report some sort of brightness percent to nits
 * mapping, we will use following default values so backlight control using
 * nits based interfaces will still work, but might not describe panel
 * correctly. In this case percentage based backlight control should ideally
 * be used.
 * Min = 5 nits
 * Max = 300 nits
 */

#define MOD_POWER_TO_CORE(mod_power)\
                container_of(mod_power, struct core_power, mod_public)

static uint16_t backlight_8_to_16(unsigned int backlight_8bit)
{
        return (uint16_t)(backlight_8bit * 0x101);
}

unsigned int backlight_millipercent_to_millinit(
                struct core_power *core_power, unsigned int millipercent, unsigned int inst)
{
        unsigned int millinit = 0;
        unsigned long long numerator = 0;

        if (core_power == NULL)
                return 0;

        numerator = ((unsigned long long)millipercent) *
                                core_power->bl_prop[inst].nits_range;
        millinit = ((unsigned int)div_u64(numerator, 100000)) +
                        core_power->bl_prop[inst].min_brightness_millinits;

        return millinit;
}

static unsigned int backlight_millinit_to_millipercent(
                struct core_power *core_power, unsigned int millinit, unsigned int inst)
{
        unsigned int millipercent = 0;
        unsigned long long numerator = 0;

        if (core_power == NULL)
                return 0;

        if (millinit <= core_power->bl_prop[inst].min_brightness_millinits)
                return 0;

        if (millinit >= core_power->bl_prop[inst].max_brightness_millinits)
                return (100 * 1000);

        numerator = (((unsigned long long)millinit) -
                        core_power->bl_prop[inst].min_brightness_millinits) * 100000;
        millipercent = ((unsigned int)div_u64(numerator,
                                core_power->bl_prop[inst].nits_range));

        return millipercent;
}

static unsigned int backlight_pwm_to_millipercent(
                struct core_power *core_power, unsigned int pwm, unsigned int inst)
{
        unsigned int millipercent = 0;
        unsigned int max_index = 0;

        if (core_power == NULL)
                return 0;

        if (!core_power->bl_prop[inst].backlight_caps_valid)
                return 0;

        /* Doesn't really make sense to have one single backlight level
         * possible...
         */
        if (core_power->bl_prop[inst].num_backlight_levels < 2)
                return 0;

        max_index = core_power->bl_prop[inst].num_backlight_levels - 1;

        if (pwm <= core_power->bl_prop[inst].backlight_lut[0])
                return 0;

        if (pwm > core_power->bl_prop[inst].backlight_lut[max_index])
                return (100 * 1000);

        /* We need to do a binary search over the array for where the pwm level
         * is in the lut. Based on the index we can determine percentage.
         */
        unsigned int min = 0;
        unsigned int max = max_index;
        unsigned int mid = 0;

        while (max >= min) {
                mid = (min + max) / 2; /* floor of half range */

                if (core_power->bl_prop[inst].backlight_lut[mid] < pwm)
                        min = mid + 1;
                else if (core_power->bl_prop[inst].backlight_lut[mid] > pwm)
                        max = mid - 1;
                else
                        break;
        }

        /* In this case, exact match is not found. Check if mid/min/max
         * value is actually closer.
         */
        if (max < min) {
                unsigned int min_delta;
                unsigned int mid_delta;
                unsigned int max_delta;

                min_delta = (core_power->bl_prop[inst].backlight_lut[min] > pwm) ?
                                core_power->bl_prop[inst].backlight_lut[min] - pwm :
                                pwm - core_power->bl_prop[inst].backlight_lut[min];

                mid_delta = (core_power->bl_prop[inst].backlight_lut[mid] > pwm) ?
                                core_power->bl_prop[inst].backlight_lut[mid] - pwm :
                                pwm - core_power->bl_prop[inst].backlight_lut[mid];

                max_delta = (core_power->bl_prop[inst].backlight_lut[max] > pwm) ?
                                core_power->bl_prop[inst].backlight_lut[max] - pwm :
                                pwm - core_power->bl_prop[inst].backlight_lut[max];

                if ((min_delta < mid_delta) && (min_delta < max_delta))
                        mid = min;

                if ((max_delta < mid_delta) && (max_delta < min_delta))
                        mid = max;
        }

        /* No interpolation, just take closest index */
        millipercent = 1000 * 100 * mid / max_index;

        return millipercent;
}

static unsigned int backlight_pwm_to_millinit(
                struct core_power *core_power, unsigned int pwm, unsigned int inst)
{
        unsigned int millinit = 0;

        if (core_power == NULL)
                return 0;

        if (pwm <= core_power->bl_prop[inst].min_backlight_pwm)
                return core_power->bl_prop[inst].min_brightness_millinits;

        if (pwm >= core_power->bl_prop[inst].max_backlight_pwm)
                return core_power->bl_prop[inst].max_brightness_millinits;

        millinit = ((unsigned int)div_u64(((unsigned long long)pwm -
                                core_power->bl_prop[inst].min_backlight_pwm) *
                                core_power->bl_prop[inst].nits_range,
                                core_power->bl_prop[inst].backlight_range));

        millinit += core_power->bl_prop[inst].min_brightness_millinits;

        if (millinit > core_power->bl_prop[inst].max_brightness_millinits)
                millinit = core_power->bl_prop[inst].max_brightness_millinits;

        return millinit;
}

unsigned int backlight_millipercent_to_pwm(
                struct core_power *core_power, unsigned int millipercent, unsigned int inst)
{
        unsigned int pwm = (unsigned int)-1;
        unsigned int index = 0;

        if (core_power == NULL)
                return 0;

        // Bypass the brightness mapping LUT
        if (core_power->bl_prop->use_linear_backlight_curve) {
                pwm = core_power->bl_prop[inst].min_backlight_pwm +
                        (unsigned int) div_u64((unsigned long long) millipercent *
                        core_power->bl_prop[inst].backlight_range,
                        100000);

                if (pwm > core_power->bl_prop[inst].max_backlight_pwm)
                        pwm = core_power->bl_prop[inst].max_backlight_pwm;

                return pwm;
        }

        if (millipercent >= (100 * 1000))
                return core_power->bl_prop[inst].backlight_lut[core_power->bl_prop[inst].num_backlight_levels - 1];

        /* This will give the floor index. */
        index = ((core_power->bl_prop[inst].num_backlight_levels - 1) *
                                                millipercent) / 100000;
        /* Null check otherwise eDP doesn't lightup when connected to DP1 */
        if (core_power->bl_prop[inst].backlight_lut == NULL)
                return pwm;

        pwm = core_power->bl_prop[inst].backlight_lut[index];

        return pwm;
}

static unsigned int backlight_millinit_to_pwm(
                struct core_power *core_power, unsigned int millinit, unsigned int inst)
{
        unsigned int pwm = 0;

        if (core_power == NULL)
                return 0;

        /* For nits based brightness, the signal will be a value
         * between the minimum and maximum value.
         */
        if (millinit >= core_power->bl_prop[inst].max_brightness_millinits)
                return core_power->bl_prop[inst].max_backlight_pwm;
        else if (millinit <= core_power->bl_prop[inst].min_brightness_millinits)
                return core_power->bl_prop[inst].min_backlight_pwm;

        pwm = ((unsigned int)div_u64(((unsigned long long)millinit -
                        core_power->bl_prop[inst].min_brightness_millinits) *
                        core_power->bl_prop[inst].backlight_range,
                        core_power->bl_prop[inst].nits_range));

        pwm += core_power->bl_prop[inst].min_backlight_pwm;

        if (pwm > core_power->bl_prop[inst].max_backlight_pwm)
                pwm = core_power->bl_prop[inst].max_backlight_pwm;

        return pwm;
}

static bool validate_ext_backlight_caps(
                struct dm_acpi_atif_backlight_caps *ext_backlight_caps)
{
        unsigned int i;
        unsigned int num_of_data_points = 0;
        unsigned int last_signal_level = 0;
        unsigned int last_luminance = 0;

        num_of_data_points = ext_backlight_caps->num_data_points;

        /* Validation rules:
         * 1. BIOS should carry customized data points and
         * the number of data points should not be larger than 99.
         * 2. The max_input_signal should be larger than min_input_signal.
         * 3. For each data point:
         *      a. luminance should be in ascending order and
         *      should not be 0 or 100 since the corresponding signal_level
         *      are assigned by min_input_signal and max_input_signal.
         *      b. signal_level should be in ascending order and
         *      be within the range of min/max_input_signal.
         */
        if (num_of_data_points > BL_DATA_POINTS)
                return false;

        if (ext_backlight_caps->min_input_signal >= ext_backlight_caps->max_input_signal)
                return false;

        last_signal_level = ext_backlight_caps->min_input_signal;
        for (i = 0; i < num_of_data_points; i++) {
                unsigned int luminance = ext_backlight_caps->data_points[i].luminance;
                unsigned int signal_level = ext_backlight_caps->data_points[i].signal_level;

                if ((luminance <= last_luminance) || (luminance > BL_DATA_POINTS))
                        return false;

                if ((signal_level <= last_signal_level) || (signal_level >= ext_backlight_caps->max_input_signal))
                        return false;

                last_signal_level = signal_level;
                last_luminance = luminance;
        }

        return true;
}

/* hard coded to default backlight curve. */
void initialize_backlight_caps(struct core_power *core_power, unsigned int inst)
{
        unsigned int i;
        struct dm_acpi_atif_backlight_caps *ext_backlight_caps = NULL;
        bool custom_curve_present = false;
        unsigned int num_levels = 0;
        struct dc *dc = NULL;
        enum dm_acpi_display_type acpi_display_type =
                (inst == 0) ? AcpiDisplayType_LCD1 : AcpiDisplayType_LCD2;

        if (core_power == NULL)
                return;
        dc = core_power->dc;

        num_levels = core_power->bl_prop[inst].num_backlight_levels;

        /* Allocate memory for ATIF output
         * (do not want to use 256 bytes on the stack)
         */
        ext_backlight_caps = (struct dm_acpi_atif_backlight_caps *)
                (kzalloc(sizeof(struct dm_acpi_atif_backlight_caps),
                                GFP_KERNEL));

        if (ext_backlight_caps == NULL)
                return;

        /* Retrieve ACPI extended brightness caps */
        if (dm_query_extended_brightness_caps
                (dc->ctx, acpi_display_type, ext_backlight_caps)) {
                custom_curve_present = validate_ext_backlight_caps(ext_backlight_caps);
        }

        if (core_power->bl_prop[inst].use_custom_backlight_caps &&
                        fill_custom_backlight_caps(
                                        core_power->bl_prop[inst].custom_backlight_caps_config_no,
                                        ext_backlight_caps)) {
                custom_curve_present = validate_ext_backlight_caps(ext_backlight_caps);
        }

        if (custom_curve_present) {
                unsigned int index = 1;
                unsigned int num_of_data_points = ext_backlight_caps->num_data_points;

                core_power->bl_prop[inst].ac_backlight_percent =
                        ext_backlight_caps->ac_level_percentage;
                core_power->bl_prop[inst].dc_backlight_percent =
                        ext_backlight_caps->dc_level_percentage;
                core_power->bl_prop[inst].backlight_lut[0] =
                        backlight_8_to_16(
                                ext_backlight_caps->min_input_signal);
                core_power->bl_prop[inst].backlight_lut[num_levels - 1] =
                        backlight_8_to_16(
                                ext_backlight_caps->max_input_signal);

                /* Filling translation table from data points -
                 * between every two provided data points we
                 * lineary interpolate missing values
                 */
                for (i = 0; i < num_of_data_points; i++) {
                        unsigned int luminance =
                                ext_backlight_caps->data_points[i].luminance;
                        unsigned int signal_level =
                                backlight_8_to_16(
                                        ext_backlight_caps->data_points[i].signal_level);

                        /* Since luminance is a percentage, scale it by num_levels*/
                        luminance = (luminance * num_levels) / 101;

                        /* Lineary interpolate missing values */
                        if (index < luminance) {
                                unsigned int base_value =
                                        core_power->bl_prop[inst].backlight_lut[index-1];
                                unsigned int delta_signal =
                                        signal_level - base_value;
                                unsigned int delta_luma =
                                        luminance - index + 1;
                                unsigned int step  = delta_signal;

                                for (; index < luminance; index++) {
                                        core_power->bl_prop[inst].backlight_lut[index] =
                                                base_value + (step / delta_luma);
                                        step += delta_signal;
                                }
                        }

                        /* Now [index == luminance],
                         * so we can add data point to the translation table
                         */
                        core_power->bl_prop[inst].backlight_lut[index++] = signal_level;
                }

                /* Complete the final segment of interpolation -
                 * between last datapoint and maximum value
                 */
                if (index < num_levels - 1) {
                        unsigned int base_value =
                                core_power->bl_prop[inst].backlight_lut[index-1];
                        unsigned int delta_signal =
                                core_power->bl_prop[inst].backlight_lut[num_levels - 1] -
                                                                base_value;
                        unsigned int delta_luma = num_levels - index;
                        unsigned int step = delta_signal;

                        for (; index < num_levels - 1; index++) {
                                core_power->bl_prop[inst].backlight_lut[index] =
                                                base_value + (step / delta_luma);
                                step += delta_signal;
                        }
                }
        /* Build backlight translation table based on default curve */
        } else {
                /* Defines default backlight curve F(x) = A(x*x) + Bx + C.
                 *
                 * Backlight curve should always  satisfy:
                 * F(0) = min, F(100) = max,
                 * So polynom coefficients are:
                 * A is 0.0255 - B/100 - min/10000 - (255-max)/10000 =
                 * (max - min)/10000 - B/100
                 * B is adjustable factor to modify the curve.
                 * Bigger B results in less concave curve.
                 * B range is [0..(max-min)/100]
                 * C is backlight minimum
                 */
                unsigned int backlight_curve_coeff_a_factor =
                                num_levels * num_levels;
                unsigned int backlight_curve_coeff_b = num_levels;
                unsigned int delta =
                        core_power->bl_prop[inst].backlight_lut[num_levels - 1] -
                                core_power->bl_prop[inst].backlight_lut[0];
                unsigned int coeffC = core_power->bl_prop[inst].backlight_lut[0];
                unsigned int coeffB =
                                (backlight_curve_coeff_b < delta ?
                                        backlight_curve_coeff_b : delta);
                unsigned long long coeffA = delta - coeffB; /* coeffB is B*100 */

                for (i = 1; i < num_levels - 1; i++) {
                        uint64_t lut_val = div_u64(coeffA * i * i, backlight_curve_coeff_a_factor) +
                                div_u64((uint64_t)coeffB * i, backlight_curve_coeff_b) + coeffC;

                        ASSERT(lut_val <= 0xFFFFFFFF);
                        core_power->bl_prop[inst].backlight_lut[i] = (unsigned int)lut_val;
                }
        }

        if (ext_backlight_caps != NULL)
                kfree(ext_backlight_caps);

        /* Successfully initialized */
        core_power->bl_prop[inst].backlight_caps_valid = true;
}

static void varibright_set_level(struct core_power *core_power)
{
        if (!core_power->varibright_prop.varibright_active ||
                !core_power->varibright_prop.varibright_user_enable)
                core_power->varibright_prop.varibright_hw_level = 0;
        else
                core_power->varibright_prop.varibright_hw_level =
                        core_power->varibright_prop.varibright_level;
}

bool mod_power_hw_init_backlight(struct mod_power *mod_power)
{
        struct core_power *core_power = NULL;
        struct dc *dc = NULL;
        struct dmcu *dmcu = NULL;
        struct dmcu_iram_parameters params;
        unsigned int i;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);
        dc = core_power->dc;

        for (i = 0; i < core_power->edp_num; i++) {
                params.set = core_power->varibright_prop.varibright_config_setting;
                params.backlight_ramping_override = core_power->bl_prop[i].backlight_ramping_override;
                params.backlight_ramping_reduction = core_power->bl_prop[i].backlight_ramping_reduction;
                params.backlight_ramping_start = core_power->bl_prop[i].backlight_ramping_start;
                params.backlight_lut_array = core_power->bl_prop[i].backlight_lut;
                params.backlight_lut_array_size = core_power->bl_prop[i].num_backlight_levels;
                params.min_abm_backlight = core_power->bl_prop[i].min_abm_backlight;

                dmcu = dc->res_pool->dmcu;

                // In the case where abm is implemented on dmcub,
                // dmcu object will be null.
                // ABM 2.4 and up are implemented on dmcub.
                if (dmcu) {
                        //DMCU does not support multiple eDP
                        return dmcu_load_iram(dmcu, params);
                } else if (dc->ctx->dmub_srv) {
                        if (!dmub_init_abm_config(dc->res_pool, params, i))
                                return false;
                } else
                        return false;
        }
        return true;
}

void mod_power_update_backlight_on_mode_change(
    struct core_power *core_power,
    struct dc_link *link,
    unsigned int panel_inst,
    uint8_t aux_inst,
    bool is_hdr)
{
    struct set_backlight_level_params backlight_level_params = { 0 };

                if (link->dpcd_sink_ext_caps.bits.hdr_aux_backlight_control == 1 ||
                        link->dpcd_sink_ext_caps.bits.sdr_aux_backlight_control == 1)
                        dc_link_set_backlight_level_nits(link, core_power->bl_state[panel_inst].isHDR,
                                core_power->bl_state[panel_inst].backlight_millinit, 0);

                backlight_level_params.frame_ramp = 0;

                fill_backlight_level_params(core_power, &backlight_level_params, panel_inst, aux_inst,
                        core_power->bl_state[panel_inst].backlight_pwm, link->backlight_control_type,
                        core_power->bl_state[panel_inst].backlight_millinit, 0, is_hdr);

                dc_link_set_backlight_level(link, &backlight_level_params);
}

static bool set_backlight_millinits_aux(struct core_power *core_power,
                struct dc_stream_state *stream,
                unsigned int backlight_millinits,
                unsigned int transition_time_millisec,
                unsigned int inst)
{
        struct dc_link *link = NULL;

        if (core_power == NULL)
                return false;

        if (stream == NULL)
                return true;

        link = dc_stream_get_link(stream);

        return dc_link_set_backlight_level_nits(link, core_power->bl_state[inst].isHDR,
                        backlight_millinits, transition_time_millisec);
}

static bool set_backlight(struct core_power *core_power,
                struct dc_stream_state *stream,
                struct set_backlight_level_params *backlight_level_params,
                unsigned int inst)
{
        bool retv = false;
        unsigned int frame_ramp = 0;
        unsigned int vsync_rate_hz;
        union dmcu_abm_set_bl_params params;
        const struct dc_link *link = NULL;
        unsigned int backlight_pwm_u16_16 = backlight_level_params->backlight_pwm_u16_16;
        unsigned int transition_time_millisec = backlight_level_params->transition_time_in_ms;

        if (core_power == NULL)
                return false;

        core_power->bl_state[inst].backlight_pwm = backlight_pwm_u16_16;

        if (stream == NULL)
                return true;

        if (stream->link->connector_signal != SIGNAL_TYPE_EDP)
                return false;

        if (transition_time_millisec != 0) {
                unsigned int v_total =
                        (stream->adjust.v_total_max == 0) ? stream->timing.v_total : stream->adjust.v_total_max;

                vsync_rate_hz = (unsigned int)div_u64(div_u64((stream->
                        timing.pix_clk_100hz * 100),
                        v_total),
                        stream->timing.h_total);

                if (core_power->bl_state[inst].smooth_brightness_enabled)
                        frame_ramp = ((vsync_rate_hz *
                                transition_time_millisec) + 500) / 1000;
        }

        core_power->bl_state[inst].frame_ramp = frame_ramp;
        params.u32All = 0;
        params.bits.gradual_change = (frame_ramp > 0);
        params.bits.frame_ramp = frame_ramp;
        link = dc_stream_get_link(stream);

        mod_power_set_psr_event(&core_power->mod_public, stream, true, psr_event_hw_programming, true);
        mod_power_set_replay_event(&core_power->mod_public, stream, true, replay_event_hw_programming, true);

        backlight_level_params->frame_ramp = params.u32All;
        retv = dc_link_set_backlight_level(link, backlight_level_params);

        mod_power_set_psr_event(&core_power->mod_public, stream, false, psr_event_hw_programming, false);
        mod_power_set_replay_event(&core_power->mod_public, stream, false, replay_event_hw_programming, false);

        return retv;
}

void fill_backlight_level_params(struct core_power *core_power,
        struct set_backlight_level_params *backlight_level_params,
        int panel_inst, uint8_t aux_inst, unsigned int backlight_pwm,
        enum backlight_control_type backlight_control_type,
        unsigned int backlight_millinit, unsigned int transition_time_millisec,
        bool is_hdr)
{
        struct pwr_backlight_properties *bl_prop = &core_power->bl_prop[panel_inst];

        backlight_level_params->aux_inst = aux_inst;
        backlight_level_params->backlight_pwm_u16_16 = backlight_pwm;
        backlight_level_params->control_type = backlight_control_type;
        backlight_level_params->backlight_millinits = backlight_millinit;
        backlight_level_params->transition_time_in_ms = transition_time_millisec;
        backlight_level_params->min_luminance = bl_prop->min_brightness_millinits;
        backlight_level_params->max_luminance = bl_prop->max_brightness_millinits;
        backlight_level_params->min_backlight_pwm = bl_prop->min_backlight_pwm;
        backlight_level_params->max_backlight_pwm = bl_prop->max_backlight_pwm;

        if (backlight_control_type == BACKLIGHT_CONTROL_AMD_AUX && !is_hdr)
                backlight_level_params->control_type = BACKLIGHT_CONTROL_PWM;
}

bool mod_power_set_backlight_nits(struct mod_power *mod_power,
                struct dc_stream_state *stream,
                unsigned int backlight_millinit,
                unsigned int transition_time_millisec,
                bool skip_aux,
                bool is_hdr)
{
        struct core_power *core_power = NULL;
        unsigned int backlight_pwm;
        unsigned int panel_inst = 0;
        struct set_backlight_level_params backlight_level_params = { 0 };
        const struct dc_link *link = NULL;
        uint8_t aux_inst = 0;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);
        link = dc_stream_get_link(stream);

        if (link->ctx->dc->config.dp_connector_no_native_i2c && link->no_ddc_pin) {
                aux_inst = (uint8_t)link->aux_hw_inst;
        } else {
                ASSERT(link->ddc->ddc_pin->hw_info.ddc_channel <= 0xFF);
                aux_inst = (uint8_t)link->ddc->ddc_pin->hw_info.ddc_channel;
        }

        if (!dc_get_edp_link_panel_inst(core_power->dc, stream->link, &panel_inst))
                return false;

        if (!skip_aux) {
                if (!set_backlight_millinits_aux(core_power, stream,
                                                backlight_millinit, transition_time_millisec, panel_inst))
                        return false;
        }
// always send both AUX (above) and PWM (below)
        core_power->bl_state[panel_inst].backlight_millinit = backlight_millinit;

        core_power->bl_state[panel_inst].backlight_millipercent =
                backlight_millinit_to_millipercent(
                                core_power, backlight_millinit, panel_inst);

        backlight_pwm = backlight_millinit_to_pwm(
                                core_power, backlight_millinit, panel_inst);

        fill_backlight_level_params(core_power, &backlight_level_params, panel_inst, aux_inst, backlight_pwm,
                link->backlight_control_type, backlight_millinit, transition_time_millisec, is_hdr);

        return set_backlight(core_power, stream,
                        &backlight_level_params, panel_inst);
}

bool mod_power_backlight_percent_to_nits(struct mod_power *mod_power,
                struct dc_stream_state *stream,
                unsigned int backlight_millipercent,
                unsigned int *backlight_millinit)
{
        struct core_power *core_power = NULL;
        unsigned int inst = 0;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (!dc_get_edp_link_panel_inst(core_power->dc, stream->link, &inst))
                return false;

        *backlight_millinit = backlight_millipercent_to_millinit(
                        core_power, backlight_millipercent, inst);
        return true;
}

bool mod_power_backlight_nits_to_percent(struct mod_power *mod_power,
                struct dc_stream_state *stream,
                unsigned int backlight_millinit,
                unsigned int *backlight_millipercent)
{
        struct core_power *core_power = NULL;
        unsigned int inst = 0;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (!dc_get_edp_link_panel_inst(core_power->dc, stream->link, &inst))
                return false;

        *backlight_millipercent = backlight_millinit_to_millipercent(
                        core_power, backlight_millinit, inst);
        return true;
}

bool mod_power_set_backlight_percent(struct mod_power *mod_power,
                struct dc_stream_state *stream,
                unsigned int backlight_millipercent,
                unsigned int transition_time_millisec,
                bool is_hdr)
{
        struct core_power *core_power = NULL;
        struct set_backlight_level_params backlight_level_params = { 0 };
        const struct dc_link *link = NULL;
        unsigned int backlight_pwm;
        unsigned int panel_inst = 0;
        uint8_t aux_inst = 0;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);
        link = dc_stream_get_link(stream);
        if (link->ctx->dc->config.dp_connector_no_native_i2c && link->no_ddc_pin) {
                aux_inst = (uint8_t)link->aux_hw_inst;
        } else {
                ASSERT(link->ddc->ddc_pin->hw_info.ddc_channel <= 0xFF);
                aux_inst = (uint8_t)link->ddc->ddc_pin->hw_info.ddc_channel;
        }

        if (!dc_get_edp_link_panel_inst(core_power->dc, stream->link, &panel_inst))
                return false;
        core_power->bl_state[panel_inst].backlight_millipercent = backlight_millipercent;

        core_power->bl_state[panel_inst].backlight_millinit =
                backlight_millipercent_to_millinit(
                                core_power, backlight_millipercent, panel_inst);

        backlight_pwm = backlight_millipercent_to_pwm(
                                core_power, backlight_millipercent, panel_inst);

        fill_backlight_level_params(core_power, &backlight_level_params, panel_inst,
                aux_inst, backlight_pwm, link->backlight_control_type,
                core_power->bl_state[panel_inst].backlight_millinit, transition_time_millisec, is_hdr);

        return set_backlight(core_power, stream,
                        &backlight_level_params, panel_inst);
}

void mod_power_update_backlight(struct mod_power *mod_power,
                struct dc_stream_state *stream,
                unsigned int backlight_millipercent)
{
        struct core_power *core_power = NULL;
        unsigned int inst = 0;

        if (mod_power == NULL)
                return;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (!dc_get_edp_link_panel_inst(core_power->dc, stream->link, &inst))
                return;
        core_power->bl_state[inst].backlight_millipercent = backlight_millipercent;

        core_power->bl_state[inst].backlight_millinit =
                backlight_millipercent_to_millinit(
                        core_power, backlight_millipercent, inst);

        core_power->bl_state[inst].backlight_pwm = backlight_millipercent_to_pwm(
                core_power, backlight_millipercent, inst);
}

void mod_power_update_backlight_nits(struct mod_power *mod_power,
                struct dc_stream_state *stream,
                unsigned int backlight_millinit)
{
        struct core_power *core_power = NULL;
        unsigned int inst = 0;

        if (mod_power == NULL)
                return;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (!dc_get_edp_link_panel_inst(core_power->dc, stream->link, &inst))
                return;

        core_power->bl_state[inst].backlight_millinit = backlight_millinit;

        core_power->bl_state[inst].backlight_millipercent = backlight_millinit_to_millipercent(
                core_power, backlight_millinit, inst);
        core_power->bl_state[inst].backlight_pwm = backlight_millinit_to_pwm(
                core_power, backlight_millinit, inst);
}

bool mod_power_get_backlight_pwm(struct mod_power *mod_power,
                unsigned int *backlight_pwm,
                unsigned int inst)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        *backlight_pwm = core_power->bl_state[inst].backlight_pwm;

        return true;
}

bool mod_power_get_backlight_nits(struct mod_power *mod_power,
                unsigned int *backlight_millinit,
                unsigned int inst)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        *backlight_millinit = core_power->bl_state[inst].backlight_millinit;

        return true;
}

bool mod_power_get_backlight_percent(struct mod_power *mod_power,
                unsigned int *backlight_millipercent,
                unsigned int inst)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        *backlight_millipercent = core_power->bl_state[inst].backlight_millipercent;

        return true;
}

bool mod_power_get_hw_target_backlight_pwm_nits(struct mod_power *mod_power,
                const struct dc_link *link,
                unsigned int *backlight_millinit,
                unsigned int inst)
{
        struct core_power *core_power = NULL;
        unsigned int backlight_u16_16 = 0;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (mod_power_get_hw_target_backlight_pwm(mod_power, link,
                                                        &backlight_u16_16)) {
                *backlight_millinit =
                        backlight_pwm_to_millinit(core_power,
                                        backlight_u16_16, inst);
                return true;
        }
        return false;
}

bool mod_power_get_hw_target_backlight_pwm_percent(struct mod_power *mod_power,
                const struct dc_link *link,
                unsigned int *backlight_millipercent,
                unsigned int inst)
{
        struct core_power *core_power = NULL;
        unsigned int backlight_u16_16 = 0;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (mod_power_get_hw_target_backlight_pwm(mod_power, link,
                                                        &backlight_u16_16)) {
                *backlight_millipercent =
                        backlight_pwm_to_millipercent(core_power,
                                        backlight_u16_16, inst);
                return true;
        }
        return false;
}

bool mod_power_get_hw_target_backlight_pwm(struct mod_power *mod_power,
                const struct dc_link *link,
                unsigned int *backlight_u16_16)
{
        if (mod_power == NULL)
                return false;

        *backlight_u16_16 = dc_link_get_target_backlight_pwm(link);

        return true;
}

bool mod_power_get_hw_backlight_pwm_nits(struct mod_power *mod_power,
                const struct dc_link *link,
                unsigned int *backlight_millinit,
                unsigned int inst)
{
        struct core_power *core_power = NULL;
        unsigned int backlight_u16_16 = 0;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (mod_power_get_hw_backlight_pwm(mod_power, link, &backlight_u16_16)) {
                *backlight_millinit =
                        backlight_pwm_to_millinit(core_power,
                                        backlight_u16_16, inst);
                return true;
        }
        return false;
}

bool mod_power_get_hw_backlight_aux_nits(struct mod_power *mod_power,
                struct dc_stream_state **streams, int num_streams,
                unsigned int *backlight_millinit_avg,
                unsigned int *backlight_millinit_peak)
{
        struct core_power *core_power = NULL;
        struct dc_link *link = NULL;
        int stream_index;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (core_power == NULL)
                return false;

        if (num_streams < 1)
                return true;

        for (stream_index = 0; stream_index < num_streams; stream_index++)
                if (streams[stream_index]->link->connector_signal == SIGNAL_TYPE_EDP ||
                                streams[stream_index]->link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT)
                        break;

        if (stream_index == num_streams)
                return false;

        link = dc_stream_get_link(streams[stream_index]);
        if (link->dpcd_sink_ext_caps.bits.hdr_aux_backlight_control == 0)
                return false;

        return dc_link_get_backlight_level_nits(link, backlight_millinit_avg,
                        backlight_millinit_peak);
}

bool mod_power_get_hw_backlight_pwm_percent(struct mod_power *mod_power,
                const struct dc_link *link,
                unsigned int *backlight_millipercent,
                unsigned int inst)
{
        struct core_power *core_power = NULL;
        unsigned int backlight_u16_16 = 0;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (mod_power_get_hw_backlight_pwm(mod_power, link, &backlight_u16_16)) {
                *backlight_millipercent =
                        backlight_pwm_to_millipercent(core_power,
                                        backlight_u16_16, inst);
                return true;
        }
        return false;
}

bool mod_power_get_hw_backlight_pwm(struct mod_power *mod_power,
                const struct dc_link *link,
                unsigned int *backlight_u16_16)
{
        if (mod_power == NULL)
                return false;

        *backlight_u16_16 = dc_link_get_backlight_level(link);

        return true;
}

bool mod_power_get_panel_backlight_boundaries(
                                struct mod_power *mod_power,
                                unsigned int *out_min_backlight,
                                unsigned int *out_max_backlight,
                                unsigned int *out_ac_backlight_percent,
                                unsigned int *out_dc_backlight_percent,
                                unsigned int inst)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        /* If cache was successfully updated,
         * copy the values to output structure and return success
         */
        if (core_power->bl_prop[inst].backlight_caps_valid) {
                *out_min_backlight = core_power->bl_prop[inst].backlight_lut[0];
                *out_max_backlight =
                        core_power->bl_prop[inst].backlight_lut[
                                core_power->bl_prop[inst].num_backlight_levels - 1];
                *out_ac_backlight_percent =
                        core_power->bl_prop[inst].ac_backlight_percent;
                *out_dc_backlight_percent =
                        core_power->bl_prop[inst].dc_backlight_percent;

                return true;
        }

        return false;
}

bool mod_power_set_smooth_brightness(struct mod_power *mod_power,
                bool enable_brightness,
                unsigned int inst)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        core_power->bl_state[inst].smooth_brightness_enabled = enable_brightness;

        return true;
}

bool mod_power_varibright_feature_enable(struct mod_power *mod_power, bool enable,
                struct dc_stream_update *stream_update)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);
        core_power->varibright_prop.varibright_user_enable = enable;

        /* find abm hw level to program, and save in stream update */
        varibright_set_level(core_power);
        *stream_update->abm_level = core_power->varibright_prop.varibright_hw_level;

        DC_TRACE_LEVEL_MESSAGEP(DAL_TRACE_LEVEL_INFORMATION,
                                                WPP_BIT_FLAG_Backlight_ABM,
                                                ">ABM feature enable: enable=%u su->varibright_level=%u varibright_hw_level=%u",
                                                (unsigned int) enable,
                                                *stream_update->abm_level,
                                                core_power->varibright_prop.varibright_hw_level);
        return true;
}

bool mod_power_varibright_activate(struct mod_power *mod_power,
                bool activate,
                struct dc_stream_update *stream_update)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);
        core_power->varibright_prop.varibright_active = activate;

        /* find abm hw level to program, and save in stream update */
        varibright_set_level(core_power);
        *stream_update->abm_level = core_power->varibright_prop.varibright_hw_level;

        DC_TRACE_LEVEL_MESSAGEP(DAL_TRACE_LEVEL_INFORMATION,
                                                WPP_BIT_FLAG_Backlight_ABM,
                                                ">ABM activate: activate=%u su->varibright_level=%u",
                                                (unsigned int) activate,
                                                *stream_update->abm_level);
        return true;
}
bool mod_power_varibright_set_level(struct mod_power *mod_power, unsigned int level,
                struct dc_stream_update *stream_update)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);
        core_power->varibright_prop.varibright_level = level;
        core_power->varibright_prop.varibright_hw_level = level;

        /* find abm hw level to program, and save in stream update */
        varibright_set_level(core_power);
        *stream_update->abm_level = core_power->varibright_prop.varibright_hw_level;

        DC_TRACE_LEVEL_MESSAGEP(DAL_TRACE_LEVEL_INFORMATION,
                                                WPP_BIT_FLAG_Backlight_ABM,
                                                ">ABM set level: level=%u -> (varibright_level=%u varibright_hw_level=%u) -> su->varibright_level=%u",
                                                level,
                                                core_power->varibright_prop.varibright_level,
                                                core_power->varibright_prop.varibright_hw_level,
                                                *stream_update->abm_level);
        return true;
}

bool mod_power_varibright_set_hw_level(struct mod_power *mod_power, unsigned int level,
                struct dc_stream_update *stream_update)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        if (level == 0 || level == ABM_LEVEL_IMMEDIATE_DISABLE)
                core_power->varibright_prop.varibright_active = 0;
        else
                core_power->varibright_prop.varibright_active = 1;
        core_power->varibright_prop.varibright_hw_level = level;
        *stream_update->abm_level = core_power->varibright_prop.varibright_hw_level;

        DC_TRACE_LEVEL_MESSAGEP(DAL_TRACE_LEVEL_INFORMATION,
                                                WPP_BIT_FLAG_Backlight_ABM,
                                                ">ABM set level: level=%u -> (varibright_level=%u varibright_hw_level=%u) -> su->varibright_level=%u",
                                                level,
                                                core_power->varibright_prop.varibright_level,
                                                core_power->varibright_prop.varibright_hw_level,
                                                *stream_update->abm_level);
        return true;
}

bool mod_power_get_varibright_level(struct mod_power *mod_power,
                unsigned int *varibright_level)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        *varibright_level = core_power->varibright_prop.varibright_level;

        DC_TRACE_LEVEL_MESSAGEP(DAL_TRACE_LEVEL_INFORMATION,
                                                WPP_BIT_FLAG_Backlight_ABM,
                                                ">get varibright level: cp->varibright_level=%u",
                                                *varibright_level);
        return true;

}

bool mod_power_get_varibright_hw_level(struct mod_power *mod_power,
                unsigned int *varibright_level)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        *varibright_level = core_power->varibright_prop.varibright_hw_level;
        DC_TRACE_LEVEL_MESSAGEP(DAL_TRACE_LEVEL_INFORMATION,
                                                WPP_BIT_FLAG_Backlight_ABM,
                                                ">get varibright HW level: hw_level=%u",
                                                *varibright_level);
        return true;
}

bool mod_power_get_varibright_default_level(struct mod_power *mod_power,
                unsigned int *varibright_level)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        *varibright_level = core_power->varibright_prop.def_varibright_level;
        DC_TRACE_LEVEL_MESSAGEP(DAL_TRACE_LEVEL_INFORMATION,
                                                WPP_BIT_FLAG_Backlight_ABM,
                                                ">get varibright default level: def_varibright_level=%u",
                                                *varibright_level);
        return true;
}

bool mod_power_get_varibright_enable(struct mod_power *mod_power,
                bool *varibright_enable)
{
        struct core_power *core_power = NULL;

        if (mod_power == NULL)
                return false;

        core_power = MOD_POWER_TO_CORE(mod_power);

        *varibright_enable = core_power->varibright_prop.varibright_user_enable;
        DC_TRACE_LEVEL_MESSAGEP(DAL_TRACE_LEVEL_INFORMATION,
                                WPP_BIT_FLAG_Backlight_ABM,
                                ">get varibright enable state: varibright_user_enable=%u",
                                (unsigned int) (*varibright_enable));
        return true;
}

bool mod_power_is_abm_active(struct mod_power *mod_power,
                const struct dc_link *link,
                unsigned int inst)
{
        unsigned int user_backlight = 0;
        unsigned int current_backlight = 0;
        bool is_active = false;

        if (mod_power == NULL)
                return false;

        mod_power_get_backlight_pwm(mod_power, &user_backlight, inst);
        mod_power_get_hw_backlight_pwm(mod_power, link, &current_backlight);

        if (user_backlight != current_backlight)
                is_active = true;
        else
                is_active = false;
        DC_TRACE_LEVEL_MESSAGEP(DAL_TRACE_LEVEL_INFORMATION,
                                                WPP_BIT_FLAG_Backlight_ABM,
                                                ">get ABM active state: is_active=%u (user_backlight_pwm=%u, current_backlight_pwm=%u)",
                                                (unsigned int)is_active,
                                                user_backlight,
                                                current_backlight);
        return is_active;
}

static void fill_backlight_transform_table(struct dmcu_iram_parameters params,
                struct iram_table_v_2 *table)
{
        unsigned int i;
        unsigned int num_entries = NUM_BL_CURVE_SEGS;
        unsigned int lut_index;

        table->backlight_thresholds[0] = 0;
        ASSERT(params.backlight_lut_array[0] <= 0xFFFF);
        table->backlight_offsets[0] = (uint16_t)params.backlight_lut_array[0];
        table->backlight_thresholds[num_entries-1] = 0xFFFF;
        ASSERT(params.backlight_lut_array[params.backlight_lut_array_size - 1] <= 0xFFFF);
        table->backlight_offsets[num_entries-1] =
                (uint16_t)params.backlight_lut_array[params.backlight_lut_array_size - 1];

        /* Setup all brightness levels between 0% and 100% exclusive
         * Fills brightness-to-backlight transform table. Backlight custom curve
         * describes transform from brightness to backlight. It will be defined
         * as set of thresholds and set of offsets, together, implying
         * extrapolation of custom curve into 16 uniformly spanned linear
         * segments.  Each threshold/offset represented by 16 bit entry in
         * format U4.10.
         */
        for (i = 1; i+1 < num_entries; i++) {
                lut_index = (params.backlight_lut_array_size - 1) * i / (num_entries - 1);

                ASSERT(lut_index < params.backlight_lut_array_size);

                unsigned int threshold_val = DIV_ROUNDUP((i * 65536), num_entries);
                unsigned int offset_val = params.backlight_lut_array[lut_index];

                ASSERT(threshold_val <= 0xFFFF);
                ASSERT(offset_val <= 0xFFFF);

                table->backlight_thresholds[i] = cpu_to_be16((uint16_t)threshold_val);
                table->backlight_offsets[i]    = cpu_to_be16((uint16_t)offset_val);
        }
}

static void fill_backlight_transform_table_v_2_2(struct dmcu_iram_parameters params,
                struct iram_table_v_2_2 *table, bool big_endian)
{
        unsigned int i;
        unsigned int num_entries = NUM_BL_CURVE_SEGS;
        unsigned int lut_index;

        table->backlight_thresholds[0] = 0;
        ASSERT(params.backlight_lut_array[0] <= 0xFFFF);
        table->backlight_offsets[0] = (uint16_t)params.backlight_lut_array[0];
        table->backlight_thresholds[num_entries-1] = 0xFFFF;
        ASSERT(params.backlight_lut_array[params.backlight_lut_array_size - 1] <= 0xFFFF);
        table->backlight_offsets[num_entries-1] =
                (uint16_t)params.backlight_lut_array[params.backlight_lut_array_size - 1];

        /* Setup all brightness levels between 0% and 100% exclusive
         * Fills brightness-to-backlight transform table. Backlight custom curve
         * describes transform from brightness to backlight. It will be defined
         * as set of thresholds and set of offsets, together, implying
         * extrapolation of custom curve into 16 uniformly spanned linear
         * segments.  Each threshold/offset represented by 16 bit entry in
         * format U4.10.
         */
        for (i = 1; i+1 < num_entries; i++) {
                lut_index = DIV_ROUNDUP((i * params.backlight_lut_array_size), num_entries);
                ASSERT(lut_index < params.backlight_lut_array_size);

                unsigned int threshold_val = DIV_ROUNDUP((i * 65536), num_entries);
                unsigned int offset_val = params.backlight_lut_array[lut_index];

                ASSERT(threshold_val <= 0xFFFF);
                ASSERT(offset_val <= 0xFFFF);

                table->backlight_thresholds[i] = (big_endian) ?
                        cpu_to_be16((uint16_t)threshold_val) : cpu_to_le16((uint16_t)threshold_val);
                table->backlight_offsets[i] = (big_endian) ?
                        cpu_to_be16((uint16_t)offset_val) : cpu_to_le16((uint16_t)offset_val);
        }
}

static void fill_iram_v_2(struct iram_table_v_2 *ram_table, struct dmcu_iram_parameters params)
{
        unsigned int set = params.set;

        ram_table->min_abm_backlight =
                        cpu_to_be16(params.min_abm_backlight);
        ram_table->deviation_gain = 0xb3;

        ram_table->blRampReduction =
                cpu_to_be16(params.backlight_ramping_reduction);
        ram_table->blRampStart =
                cpu_to_be16(params.backlight_ramping_start);

        ram_table->min_reduction[0][0] = min_reduction_table[abm_config[set][0]];
        ram_table->min_reduction[1][0] = min_reduction_table[abm_config[set][0]];
        ram_table->min_reduction[2][0] = min_reduction_table[abm_config[set][0]];
        ram_table->min_reduction[3][0] = min_reduction_table[abm_config[set][0]];
        ram_table->min_reduction[4][0] = min_reduction_table[abm_config[set][0]];
        ram_table->max_reduction[0][0] = max_reduction_table[abm_config[set][0]];
        ram_table->max_reduction[1][0] = max_reduction_table[abm_config[set][0]];
        ram_table->max_reduction[2][0] = max_reduction_table[abm_config[set][0]];
        ram_table->max_reduction[3][0] = max_reduction_table[abm_config[set][0]];
        ram_table->max_reduction[4][0] = max_reduction_table[abm_config[set][0]];

        ram_table->min_reduction[0][1] = min_reduction_table[abm_config[set][1]];
        ram_table->min_reduction[1][1] = min_reduction_table[abm_config[set][1]];
        ram_table->min_reduction[2][1] = min_reduction_table[abm_config[set][1]];
        ram_table->min_reduction[3][1] = min_reduction_table[abm_config[set][1]];
        ram_table->min_reduction[4][1] = min_reduction_table[abm_config[set][1]];
        ram_table->max_reduction[0][1] = max_reduction_table[abm_config[set][1]];
        ram_table->max_reduction[1][1] = max_reduction_table[abm_config[set][1]];
        ram_table->max_reduction[2][1] = max_reduction_table[abm_config[set][1]];
        ram_table->max_reduction[3][1] = max_reduction_table[abm_config[set][1]];
        ram_table->max_reduction[4][1] = max_reduction_table[abm_config[set][1]];

        ram_table->min_reduction[0][2] = min_reduction_table[abm_config[set][2]];
        ram_table->min_reduction[1][2] = min_reduction_table[abm_config[set][2]];
        ram_table->min_reduction[2][2] = min_reduction_table[abm_config[set][2]];
        ram_table->min_reduction[3][2] = min_reduction_table[abm_config[set][2]];
        ram_table->min_reduction[4][2] = min_reduction_table[abm_config[set][2]];
        ram_table->max_reduction[0][2] = max_reduction_table[abm_config[set][2]];
        ram_table->max_reduction[1][2] = max_reduction_table[abm_config[set][2]];
        ram_table->max_reduction[2][2] = max_reduction_table[abm_config[set][2]];
        ram_table->max_reduction[3][2] = max_reduction_table[abm_config[set][2]];
        ram_table->max_reduction[4][2] = max_reduction_table[abm_config[set][2]];

        ram_table->min_reduction[0][3] = min_reduction_table[abm_config[set][3]];
        ram_table->min_reduction[1][3] = min_reduction_table[abm_config[set][3]];
        ram_table->min_reduction[2][3] = min_reduction_table[abm_config[set][3]];
        ram_table->min_reduction[3][3] = min_reduction_table[abm_config[set][3]];
        ram_table->min_reduction[4][3] = min_reduction_table[abm_config[set][3]];
        ram_table->max_reduction[0][3] = max_reduction_table[abm_config[set][3]];
        ram_table->max_reduction[1][3] = max_reduction_table[abm_config[set][3]];
        ram_table->max_reduction[2][3] = max_reduction_table[abm_config[set][3]];
        ram_table->max_reduction[3][3] = max_reduction_table[abm_config[set][3]];
        ram_table->max_reduction[4][3] = max_reduction_table[abm_config[set][3]];

        ram_table->bright_pos_gain[0][0] = 0x20;
        ram_table->bright_pos_gain[0][1] = 0x20;
        ram_table->bright_pos_gain[0][2] = 0x20;
        ram_table->bright_pos_gain[0][3] = 0x20;
        ram_table->bright_pos_gain[1][0] = 0x20;
        ram_table->bright_pos_gain[1][1] = 0x20;
        ram_table->bright_pos_gain[1][2] = 0x20;
        ram_table->bright_pos_gain[1][3] = 0x20;
        ram_table->bright_pos_gain[2][0] = 0x20;
        ram_table->bright_pos_gain[2][1] = 0x20;
        ram_table->bright_pos_gain[2][2] = 0x20;
        ram_table->bright_pos_gain[2][3] = 0x20;
        ram_table->bright_pos_gain[3][0] = 0x20;
        ram_table->bright_pos_gain[3][1] = 0x20;
        ram_table->bright_pos_gain[3][2] = 0x20;
        ram_table->bright_pos_gain[3][3] = 0x20;
        ram_table->bright_pos_gain[4][0] = 0x20;
        ram_table->bright_pos_gain[4][1] = 0x20;
        ram_table->bright_pos_gain[4][2] = 0x20;
        ram_table->bright_pos_gain[4][3] = 0x20;
        ram_table->bright_neg_gain[0][0] = 0x00;
        ram_table->bright_neg_gain[0][1] = 0x00;
        ram_table->bright_neg_gain[0][2] = 0x00;
        ram_table->bright_neg_gain[0][3] = 0x00;
        ram_table->bright_neg_gain[1][0] = 0x00;
        ram_table->bright_neg_gain[1][1] = 0x00;
        ram_table->bright_neg_gain[1][2] = 0x00;
        ram_table->bright_neg_gain[1][3] = 0x00;
        ram_table->bright_neg_gain[2][0] = 0x00;
        ram_table->bright_neg_gain[2][1] = 0x00;
        ram_table->bright_neg_gain[2][2] = 0x00;
        ram_table->bright_neg_gain[2][3] = 0x00;
        ram_table->bright_neg_gain[3][0] = 0x00;
        ram_table->bright_neg_gain[3][1] = 0x00;
        ram_table->bright_neg_gain[3][2] = 0x00;
        ram_table->bright_neg_gain[3][3] = 0x00;
        ram_table->bright_neg_gain[4][0] = 0x00;
        ram_table->bright_neg_gain[4][1] = 0x00;
        ram_table->bright_neg_gain[4][2] = 0x00;
        ram_table->bright_neg_gain[4][3] = 0x00;
        ram_table->dark_pos_gain[0][0] = 0x00;
        ram_table->dark_pos_gain[0][1] = 0x00;
        ram_table->dark_pos_gain[0][2] = 0x00;
        ram_table->dark_pos_gain[0][3] = 0x00;
        ram_table->dark_pos_gain[1][0] = 0x00;
        ram_table->dark_pos_gain[1][1] = 0x00;
        ram_table->dark_pos_gain[1][2] = 0x00;
        ram_table->dark_pos_gain[1][3] = 0x00;
        ram_table->dark_pos_gain[2][0] = 0x00;
        ram_table->dark_pos_gain[2][1] = 0x00;
        ram_table->dark_pos_gain[2][2] = 0x00;
        ram_table->dark_pos_gain[2][3] = 0x00;
        ram_table->dark_pos_gain[3][0] = 0x00;
        ram_table->dark_pos_gain[3][1] = 0x00;
        ram_table->dark_pos_gain[3][2] = 0x00;
        ram_table->dark_pos_gain[3][3] = 0x00;
        ram_table->dark_pos_gain[4][0] = 0x00;
        ram_table->dark_pos_gain[4][1] = 0x00;
        ram_table->dark_pos_gain[4][2] = 0x00;
        ram_table->dark_pos_gain[4][3] = 0x00;
        ram_table->dark_neg_gain[0][0] = 0x00;
        ram_table->dark_neg_gain[0][1] = 0x00;
        ram_table->dark_neg_gain[0][2] = 0x00;
        ram_table->dark_neg_gain[0][3] = 0x00;
        ram_table->dark_neg_gain[1][0] = 0x00;
        ram_table->dark_neg_gain[1][1] = 0x00;
        ram_table->dark_neg_gain[1][2] = 0x00;
        ram_table->dark_neg_gain[1][3] = 0x00;
        ram_table->dark_neg_gain[2][0] = 0x00;
        ram_table->dark_neg_gain[2][1] = 0x00;
        ram_table->dark_neg_gain[2][2] = 0x00;
        ram_table->dark_neg_gain[2][3] = 0x00;
        ram_table->dark_neg_gain[3][0] = 0x00;
        ram_table->dark_neg_gain[3][1] = 0x00;
        ram_table->dark_neg_gain[3][2] = 0x00;
        ram_table->dark_neg_gain[3][3] = 0x00;
        ram_table->dark_neg_gain[4][0] = 0x00;
        ram_table->dark_neg_gain[4][1] = 0x00;
        ram_table->dark_neg_gain[4][2] = 0x00;
        ram_table->dark_neg_gain[4][3] = 0x00;

        ram_table->iir_curve[0] = 0x65;
        ram_table->iir_curve[1] = 0x65;
        ram_table->iir_curve[2] = 0x65;
        ram_table->iir_curve[3] = 0x65;
        ram_table->iir_curve[4] = 0x65;

        //Gamma 2.4
        ram_table->crgb_thresh[0] = cpu_to_be16(0x13b6);
        ram_table->crgb_thresh[1] = cpu_to_be16(0x1648);
        ram_table->crgb_thresh[2] = cpu_to_be16(0x18e3);
        ram_table->crgb_thresh[3] = cpu_to_be16(0x1b41);
        ram_table->crgb_thresh[4] = cpu_to_be16(0x1d46);
        ram_table->crgb_thresh[5] = cpu_to_be16(0x1f21);
        ram_table->crgb_thresh[6] = cpu_to_be16(0x2167);
        ram_table->crgb_thresh[7] = cpu_to_be16(0x2384);
        ram_table->crgb_offset[0] = cpu_to_be16(0x2999);
        ram_table->crgb_offset[1] = cpu_to_be16(0x3999);
        ram_table->crgb_offset[2] = cpu_to_be16(0x4666);
        ram_table->crgb_offset[3] = cpu_to_be16(0x5999);
        ram_table->crgb_offset[4] = cpu_to_be16(0x6333);
        ram_table->crgb_offset[5] = cpu_to_be16(0x7800);
        ram_table->crgb_offset[6] = cpu_to_be16(0x8c00);
        ram_table->crgb_offset[7] = cpu_to_be16(0xa000);
        ram_table->crgb_slope[0]  = cpu_to_be16(0x3147);
        ram_table->crgb_slope[1]  = cpu_to_be16(0x2978);
        ram_table->crgb_slope[2]  = cpu_to_be16(0x23a2);
        ram_table->crgb_slope[3]  = cpu_to_be16(0x1f55);
        ram_table->crgb_slope[4]  = cpu_to_be16(0x1c63);
        ram_table->crgb_slope[5]  = cpu_to_be16(0x1a0f);
        ram_table->crgb_slope[6]  = cpu_to_be16(0x178d);
        ram_table->crgb_slope[7]  = cpu_to_be16(0x15ab);

        fill_backlight_transform_table(
                        params, ram_table);
}

static void fill_iram_v_2_2(struct iram_table_v_2_2 *ram_table, struct dmcu_iram_parameters params)
{
        unsigned int set = params.set;

        ram_table->flags = 0x0;

        ram_table->min_abm_backlight =
                        cpu_to_be16(params.min_abm_backlight);

        ram_table->deviation_gain[0] = 0xb3;
        ram_table->deviation_gain[1] = 0xa8;
        ram_table->deviation_gain[2] = 0x98;
        ram_table->deviation_gain[3] = 0x68;

        ram_table->min_reduction[0][0] = min_reduction_table_v_2_2[abm_config[set][0]];
        ram_table->min_reduction[1][0] = min_reduction_table_v_2_2[abm_config[set][0]];
        ram_table->min_reduction[2][0] = min_reduction_table_v_2_2[abm_config[set][0]];
        ram_table->min_reduction[3][0] = min_reduction_table_v_2_2[abm_config[set][0]];
        ram_table->min_reduction[4][0] = min_reduction_table_v_2_2[abm_config[set][0]];
        ram_table->max_reduction[0][0] = max_reduction_table_v_2_2[abm_config[set][0]];
        ram_table->max_reduction[1][0] = max_reduction_table_v_2_2[abm_config[set][0]];
        ram_table->max_reduction[2][0] = max_reduction_table_v_2_2[abm_config[set][0]];
        ram_table->max_reduction[3][0] = max_reduction_table_v_2_2[abm_config[set][0]];
        ram_table->max_reduction[4][0] = max_reduction_table_v_2_2[abm_config[set][0]];

        ram_table->min_reduction[0][1] = min_reduction_table_v_2_2[abm_config[set][1]];
        ram_table->min_reduction[1][1] = min_reduction_table_v_2_2[abm_config[set][1]];
        ram_table->min_reduction[2][1] = min_reduction_table_v_2_2[abm_config[set][1]];
        ram_table->min_reduction[3][1] = min_reduction_table_v_2_2[abm_config[set][1]];
        ram_table->min_reduction[4][1] = min_reduction_table_v_2_2[abm_config[set][1]];
        ram_table->max_reduction[0][1] = max_reduction_table_v_2_2[abm_config[set][1]];
        ram_table->max_reduction[1][1] = max_reduction_table_v_2_2[abm_config[set][1]];
        ram_table->max_reduction[2][1] = max_reduction_table_v_2_2[abm_config[set][1]];
        ram_table->max_reduction[3][1] = max_reduction_table_v_2_2[abm_config[set][1]];
        ram_table->max_reduction[4][1] = max_reduction_table_v_2_2[abm_config[set][1]];

        ram_table->min_reduction[0][2] = min_reduction_table_v_2_2[abm_config[set][2]];
        ram_table->min_reduction[1][2] = min_reduction_table_v_2_2[abm_config[set][2]];
        ram_table->min_reduction[2][2] = min_reduction_table_v_2_2[abm_config[set][2]];
        ram_table->min_reduction[3][2] = min_reduction_table_v_2_2[abm_config[set][2]];
        ram_table->min_reduction[4][2] = min_reduction_table_v_2_2[abm_config[set][2]];
        ram_table->max_reduction[0][2] = max_reduction_table_v_2_2[abm_config[set][2]];
        ram_table->max_reduction[1][2] = max_reduction_table_v_2_2[abm_config[set][2]];
        ram_table->max_reduction[2][2] = max_reduction_table_v_2_2[abm_config[set][2]];
        ram_table->max_reduction[3][2] = max_reduction_table_v_2_2[abm_config[set][2]];
        ram_table->max_reduction[4][2] = max_reduction_table_v_2_2[abm_config[set][2]];

        ram_table->min_reduction[0][3] = min_reduction_table_v_2_2[abm_config[set][3]];
        ram_table->min_reduction[1][3] = min_reduction_table_v_2_2[abm_config[set][3]];
        ram_table->min_reduction[2][3] = min_reduction_table_v_2_2[abm_config[set][3]];
        ram_table->min_reduction[3][3] = min_reduction_table_v_2_2[abm_config[set][3]];
        ram_table->min_reduction[4][3] = min_reduction_table_v_2_2[abm_config[set][3]];
        ram_table->max_reduction[0][3] = max_reduction_table_v_2_2[abm_config[set][3]];
        ram_table->max_reduction[1][3] = max_reduction_table_v_2_2[abm_config[set][3]];
        ram_table->max_reduction[2][3] = max_reduction_table_v_2_2[abm_config[set][3]];
        ram_table->max_reduction[3][3] = max_reduction_table_v_2_2[abm_config[set][3]];
        ram_table->max_reduction[4][3] = max_reduction_table_v_2_2[abm_config[set][3]];

        ram_table->bright_pos_gain[0][0] = 0x20;
        ram_table->bright_pos_gain[0][1] = 0x20;
        ram_table->bright_pos_gain[0][2] = 0x20;
        ram_table->bright_pos_gain[0][3] = 0x20;
        ram_table->bright_pos_gain[1][0] = 0x20;
        ram_table->bright_pos_gain[1][1] = 0x20;
        ram_table->bright_pos_gain[1][2] = 0x20;
        ram_table->bright_pos_gain[1][3] = 0x20;
        ram_table->bright_pos_gain[2][0] = 0x20;
        ram_table->bright_pos_gain[2][1] = 0x20;
        ram_table->bright_pos_gain[2][2] = 0x20;
        ram_table->bright_pos_gain[2][3] = 0x20;
        ram_table->bright_pos_gain[3][0] = 0x20;
        ram_table->bright_pos_gain[3][1] = 0x20;
        ram_table->bright_pos_gain[3][2] = 0x20;
        ram_table->bright_pos_gain[3][3] = 0x20;
        ram_table->bright_pos_gain[4][0] = 0x20;
        ram_table->bright_pos_gain[4][1] = 0x20;
        ram_table->bright_pos_gain[4][2] = 0x20;
        ram_table->bright_pos_gain[4][3] = 0x20;

        ram_table->dark_pos_gain[0][0] = 0x00;
        ram_table->dark_pos_gain[0][1] = 0x00;
        ram_table->dark_pos_gain[0][2] = 0x00;
        ram_table->dark_pos_gain[0][3] = 0x00;
        ram_table->dark_pos_gain[1][0] = 0x00;
        ram_table->dark_pos_gain[1][1] = 0x00;
        ram_table->dark_pos_gain[1][2] = 0x00;
        ram_table->dark_pos_gain[1][3] = 0x00;
        ram_table->dark_pos_gain[2][0] = 0x00;
        ram_table->dark_pos_gain[2][1] = 0x00;
        ram_table->dark_pos_gain[2][2] = 0x00;
        ram_table->dark_pos_gain[2][3] = 0x00;
        ram_table->dark_pos_gain[3][0] = 0x00;
        ram_table->dark_pos_gain[3][1] = 0x00;
        ram_table->dark_pos_gain[3][2] = 0x00;
        ram_table->dark_pos_gain[3][3] = 0x00;
        ram_table->dark_pos_gain[4][0] = 0x00;
        ram_table->dark_pos_gain[4][1] = 0x00;
        ram_table->dark_pos_gain[4][2] = 0x00;
        ram_table->dark_pos_gain[4][3] = 0x00;

        ram_table->hybrid_factor[0] = 0xff;
        ram_table->hybrid_factor[1] = 0xff;
        ram_table->hybrid_factor[2] = 0xff;
        ram_table->hybrid_factor[3] = 0xc0;

        ram_table->contrast_factor[0] = 0x99;
        ram_table->contrast_factor[1] = 0x99;
        ram_table->contrast_factor[2] = 0x90;
        ram_table->contrast_factor[3] = 0x80;

        ram_table->iir_curve[0] = 0x65;
        ram_table->iir_curve[1] = 0x65;
        ram_table->iir_curve[2] = 0x65;
        ram_table->iir_curve[3] = 0x65;
        ram_table->iir_curve[4] = 0x65;

        //Gamma 2.2
        ram_table->crgb_thresh[0] = cpu_to_be16(0x127c);
        ram_table->crgb_thresh[1] = cpu_to_be16(0x151b);
        ram_table->crgb_thresh[2] = cpu_to_be16(0x17d5);
        ram_table->crgb_thresh[3] = cpu_to_be16(0x1a56);
        ram_table->crgb_thresh[4] = cpu_to_be16(0x1c83);
        ram_table->crgb_thresh[5] = cpu_to_be16(0x1e72);
        ram_table->crgb_thresh[6] = cpu_to_be16(0x20f0);
        ram_table->crgb_thresh[7] = cpu_to_be16(0x232b);
        ram_table->crgb_offset[0] = cpu_to_be16(0x2999);
        ram_table->crgb_offset[1] = cpu_to_be16(0x3999);
        ram_table->crgb_offset[2] = cpu_to_be16(0x4666);
        ram_table->crgb_offset[3] = cpu_to_be16(0x5999);
        ram_table->crgb_offset[4] = cpu_to_be16(0x6333);
        ram_table->crgb_offset[5] = cpu_to_be16(0x7800);
        ram_table->crgb_offset[6] = cpu_to_be16(0x8c00);
        ram_table->crgb_offset[7] = cpu_to_be16(0xa000);
        ram_table->crgb_slope[0]  = cpu_to_be16(0x3609);
        ram_table->crgb_slope[1]  = cpu_to_be16(0x2dfa);
        ram_table->crgb_slope[2]  = cpu_to_be16(0x27ea);
        ram_table->crgb_slope[3]  = cpu_to_be16(0x235d);
        ram_table->crgb_slope[4]  = cpu_to_be16(0x2042);
        ram_table->crgb_slope[5]  = cpu_to_be16(0x1dc3);
        ram_table->crgb_slope[6]  = cpu_to_be16(0x1b1a);
        ram_table->crgb_slope[7]  = cpu_to_be16(0x1910);

        fill_backlight_transform_table_v_2_2(
                        params, ram_table, true);
}

static void fill_iram_v_2_3(struct iram_table_v_2_2 *ram_table, struct dmcu_iram_parameters params, bool big_endian)
{
        unsigned int i, j;
        unsigned int set = params.set;

        ram_table->flags = 0x0;
        ram_table->min_abm_backlight = (uint16_t)((big_endian) ?
                cpu_to_be16(params.min_abm_backlight) :
                cpu_to_le16(params.min_abm_backlight));

        for (i = 0; i < NUM_AGGR_LEVEL; i++) {
                ram_table->hybrid_factor[i] = (uint8_t)abm_settings[set][i].brightness_gain;
                ram_table->contrast_factor[i] = abm_settings[set][i].contrast_factor;
                ram_table->deviation_gain[i] = abm_settings[set][i].deviation_gain;
                ram_table->min_knee[i] = abm_settings[set][i].min_knee;
                ram_table->max_knee[i] = abm_settings[set][i].max_knee;

                for (j = 0; j < NUM_AMBI_LEVEL; j++) {
                        ram_table->min_reduction[j][i] = abm_settings[set][i].min_reduction;
                        ram_table->max_reduction[j][i] = abm_settings[set][i].max_reduction;
                        ram_table->bright_pos_gain[j][i] = abm_settings[set][i].bright_pos_gain;
                        ram_table->dark_pos_gain[j][i] = abm_settings[set][i].dark_pos_gain;
                }
        }

        ram_table->iir_curve[0] = 0x65;
        ram_table->iir_curve[1] = 0x65;
        ram_table->iir_curve[2] = 0x65;
        ram_table->iir_curve[3] = 0x65;
        ram_table->iir_curve[4] = 0x65;

        //Gamma 2.2
        ram_table->crgb_thresh[0] = bswap16_based_on_endian(big_endian, 0x127c);
        ram_table->crgb_thresh[1] = bswap16_based_on_endian(big_endian, 0x151b);
        ram_table->crgb_thresh[2] = bswap16_based_on_endian(big_endian, 0x17d5);
        ram_table->crgb_thresh[3] = bswap16_based_on_endian(big_endian, 0x1a56);
        ram_table->crgb_thresh[4] = bswap16_based_on_endian(big_endian, 0x1c83);
        ram_table->crgb_thresh[5] = bswap16_based_on_endian(big_endian, 0x1e72);
        ram_table->crgb_thresh[6] = bswap16_based_on_endian(big_endian, 0x20f0);
        ram_table->crgb_thresh[7] = bswap16_based_on_endian(big_endian, 0x232b);
        ram_table->crgb_offset[0] = bswap16_based_on_endian(big_endian, 0x2999);
        ram_table->crgb_offset[1] = bswap16_based_on_endian(big_endian, 0x3999);
        ram_table->crgb_offset[2] = bswap16_based_on_endian(big_endian, 0x4666);
        ram_table->crgb_offset[3] = bswap16_based_on_endian(big_endian, 0x5999);
        ram_table->crgb_offset[4] = bswap16_based_on_endian(big_endian, 0x6333);
        ram_table->crgb_offset[5] = bswap16_based_on_endian(big_endian, 0x7800);
        ram_table->crgb_offset[6] = bswap16_based_on_endian(big_endian, 0x8c00);
        ram_table->crgb_offset[7] = bswap16_based_on_endian(big_endian, 0xa000);
        ram_table->crgb_slope[0]  = bswap16_based_on_endian(big_endian, 0x3609);
        ram_table->crgb_slope[1]  = bswap16_based_on_endian(big_endian, 0x2dfa);
        ram_table->crgb_slope[2]  = bswap16_based_on_endian(big_endian, 0x27ea);
        ram_table->crgb_slope[3]  = bswap16_based_on_endian(big_endian, 0x235d);
        ram_table->crgb_slope[4]  = bswap16_based_on_endian(big_endian, 0x2042);
        ram_table->crgb_slope[5]  = bswap16_based_on_endian(big_endian, 0x1dc3);
        ram_table->crgb_slope[6]  = bswap16_based_on_endian(big_endian, 0x1b1a);
        ram_table->crgb_slope[7]  = bswap16_based_on_endian(big_endian, 0x1910);

        fill_backlight_transform_table_v_2_2(
                        params, ram_table, big_endian);
}

bool dmub_init_abm_config(struct resource_pool *res_pool,
        struct dmcu_iram_parameters params,
        unsigned int inst)
{
        struct iram_table_v_2_2 ram_table;
        struct abm_config_table config;
        unsigned int set = params.set;
        bool result = false;
        uint32_t i, j = 0;

        if (res_pool->abm == NULL && res_pool->multiple_abms[inst] == NULL)
                return false;

        memset(&ram_table, 0, sizeof(ram_table));
        memset(&config, 0, sizeof(config));

        fill_iram_v_2_3(&ram_table, params, false);

        // We must copy to structure that is aligned to 32-bit
        for (i = 0; i < NUM_POWER_FN_SEGS; i++) {
                config.crgb_thresh[i] = ram_table.crgb_thresh[i];
                config.crgb_offset[i] = ram_table.crgb_offset[i];
                config.crgb_slope[i] = ram_table.crgb_slope[i];
        }

        for (i = 0; i < NUM_BL_CURVE_SEGS; i++) {
                config.backlight_thresholds[i] = ram_table.backlight_thresholds[i];
                config.backlight_offsets[i] = ram_table.backlight_offsets[i];
        }

        for (i = 0; i < NUM_AMBI_LEVEL; i++)
                config.iir_curve[i] = ram_table.iir_curve[i];

        for (i = 0; i < NUM_AMBI_LEVEL; i++) {
                for (j = 0; j < NUM_AGGR_LEVEL; j++) {
                        config.min_reduction[i][j] = ram_table.min_reduction[i][j];
                        config.max_reduction[i][j] = ram_table.max_reduction[i][j];
                        config.bright_pos_gain[i][j] = ram_table.bright_pos_gain[i][j];
                        config.dark_pos_gain[i][j] = ram_table.dark_pos_gain[i][j];
                }
        }

        for (i = 0; i < NUM_AGGR_LEVEL; i++) {
                config.hybrid_factor[i] = ram_table.hybrid_factor[i];
                config.contrast_factor[i] = ram_table.contrast_factor[i];
                config.deviation_gain[i] = ram_table.deviation_gain[i];
                config.min_knee[i] = ram_table.min_knee[i];
                config.max_knee[i] = ram_table.max_knee[i];
        }

        if (params.backlight_ramping_override) {

                ASSERT(params.backlight_ramping_reduction <= 0xFFFF);
                ASSERT(params.backlight_ramping_start <= 0xFFFF);
                for (i = 0; i < NUM_AGGR_LEVEL; i++) {
                        config.blRampReduction[i] = (uint16_t)params.backlight_ramping_reduction;
                        config.blRampStart[i]     = (uint16_t)params.backlight_ramping_start;
                }
        } else {
                for (i = 0; i < NUM_AGGR_LEVEL; i++) {
                        config.blRampReduction[i] = abm_settings[set][i].blRampReduction;
                        config.blRampStart[i] = abm_settings[set][i].blRampStart;
                }
        }

        config.min_abm_backlight = ram_table.min_abm_backlight;

        if (res_pool->multiple_abms[inst]) {
                result = res_pool->multiple_abms[inst]->funcs->init_abm_config(
                        res_pool->multiple_abms[inst], (char *)(&config), sizeof(struct abm_config_table), inst);
        } else
                result = res_pool->abm->funcs->init_abm_config(
                        res_pool->abm, (char *)(&config), sizeof(struct abm_config_table), 0);

        return result;
}

bool dmcu_load_iram(struct dmcu *dmcu,
        struct dmcu_iram_parameters params)
{
        unsigned char ram_table[IRAM_SIZE];
        bool result = false;

        if (dmcu == NULL)
                return false;

        if (dmcu && !dmcu->funcs->is_dmcu_initialized(dmcu))
                return true;

        memset(&ram_table, 0, sizeof(ram_table));

        if (dmcu->dmcu_version.abm_version == 0x24) {
                fill_iram_v_2_3((struct iram_table_v_2_2 *)ram_table, params, true);
                result = dmcu->funcs->load_iram(dmcu, 0, (char *)(&ram_table),
                                                IRAM_RESERVE_AREA_START_V2_2);
        } else if (dmcu->dmcu_version.abm_version == 0x23) {
                fill_iram_v_2_3((struct iram_table_v_2_2 *)ram_table, params, true);

                result = dmcu->funcs->load_iram(
                                dmcu, 0, (char *)(&ram_table), IRAM_RESERVE_AREA_START_V2_2);
        } else if (dmcu->dmcu_version.abm_version == 0x22) {
                fill_iram_v_2_2((struct iram_table_v_2_2 *)ram_table, params);

                result = dmcu->funcs->load_iram(
                                dmcu, 0, (char *)(&ram_table), IRAM_RESERVE_AREA_START_V2_2);
        } else {
                fill_iram_v_2((struct iram_table_v_2 *)ram_table, params);

                result = dmcu->funcs->load_iram(
                                dmcu, 0, (char *)(&ram_table), IRAM_RESERVE_AREA_START_V2);

                if (result)
                        result = dmcu->funcs->load_iram(
                                        dmcu, IRAM_RESERVE_AREA_END_V2 + 1,
                                        (char *)(&ram_table) + IRAM_RESERVE_AREA_END_V2 + 1,
                                        sizeof(ram_table) - IRAM_RESERVE_AREA_END_V2 - 1);
        }

        return result;
}

bool fill_custom_backlight_caps(unsigned int config_no, struct dm_acpi_atif_backlight_caps *caps)
{
        unsigned int data_points_size;
        uint64_t caps_size;

        if (config_no >= ARRAY_SIZE(custom_backlight_profiles))
                return false;

        data_points_size = custom_backlight_profiles[config_no].num_data_points
                        * sizeof(custom_backlight_profiles[config_no].data_points[0]);

        caps_size = sizeof(struct dm_acpi_atif_backlight_caps) - sizeof(caps->data_points) + data_points_size;
        ASSERT(caps_size <= 0xFFFF);
        caps->size = (uint16_t)caps_size;
        caps->flags = 0;
        caps->error_code = 0;
        caps->ac_level_percentage = custom_backlight_profiles[config_no].ac_level_percentage;
        caps->dc_level_percentage = custom_backlight_profiles[config_no].dc_level_percentage;
        caps->min_input_signal = custom_backlight_profiles[config_no].min_input_signal;
        caps->max_input_signal = custom_backlight_profiles[config_no].max_input_signal;
        caps->num_data_points = (uint8_t)custom_backlight_profiles[config_no].num_data_points;
        memcpy(caps->data_points, custom_backlight_profiles[config_no].data_points, data_points_size);
        return true;
}