/*
 * Copyright 2016 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */

#include "dm_services.h"

#include "core_types.h"

#include "reg_helper.h"
#include "dcn10/dcn10_dpp.h"
#include "basics/conversion.h"


#define NUM_PHASES    64
#define HORZ_MAX_TAPS 8
#define VERT_MAX_TAPS 8

#define BLACK_OFFSET_RGB_Y 0x0
#define BLACK_OFFSET_CBCR  0x8000


#define REG(reg)\
        dpp->tf_regs->reg

#define CTX \
        dpp->base.ctx

#undef FN
#define FN(reg_name, field_name) \
        dpp->tf_shift->field_name, dpp->tf_mask->field_name

enum dcn10_coef_filter_type_sel {
        SCL_COEF_LUMA_VERT_FILTER = 0,
        SCL_COEF_LUMA_HORZ_FILTER = 1,
        SCL_COEF_CHROMA_VERT_FILTER = 2,
        SCL_COEF_CHROMA_HORZ_FILTER = 3,
        SCL_COEF_ALPHA_VERT_FILTER = 4,
        SCL_COEF_ALPHA_HORZ_FILTER = 5
};

enum dscl_autocal_mode {
        AUTOCAL_MODE_OFF = 0,

        /* Autocal calculate the scaling ratio and initial phase and the
         * DSCL_MODE_SEL must be set to 1
         */
        AUTOCAL_MODE_AUTOSCALE = 1,
        /* Autocal perform auto centering without replication and the
         * DSCL_MODE_SEL must be set to 0
         */
        AUTOCAL_MODE_AUTOCENTER = 2,
        /* Autocal perform auto centering and auto replication and the
         * DSCL_MODE_SEL must be set to 0
         */
        AUTOCAL_MODE_AUTOREPLICATE = 3
};

enum dscl_mode_sel {
        DSCL_MODE_SCALING_444_BYPASS = 0,
        DSCL_MODE_SCALING_444_RGB_ENABLE = 1,
        DSCL_MODE_SCALING_444_YCBCR_ENABLE = 2,
        DSCL_MODE_SCALING_420_YCBCR_ENABLE = 3,
        DSCL_MODE_SCALING_420_LUMA_BYPASS = 4,
        DSCL_MODE_SCALING_420_CHROMA_BYPASS = 5,
        DSCL_MODE_DSCL_BYPASS = 6
};

static int dpp1_dscl_get_pixel_depth_val(enum lb_pixel_depth depth)
{
        if (depth == LB_PIXEL_DEPTH_30BPP)
                return 0; /* 10 bpc */
        else if (depth == LB_PIXEL_DEPTH_24BPP)
                return 1; /* 8 bpc */
        else if (depth == LB_PIXEL_DEPTH_18BPP)
                return 2; /* 6 bpc */
        else if (depth == LB_PIXEL_DEPTH_36BPP)
                return 3; /* 12 bpc */
        else {
                ASSERT(0);
                return -1; /* Unsupported */
        }
}

static bool dpp1_dscl_is_video_format(enum pixel_format format)
{
        if (format >= PIXEL_FORMAT_VIDEO_BEGIN
                        && format <= PIXEL_FORMAT_VIDEO_END)
                return true;
        else
                return false;
}

static bool dpp1_dscl_is_420_format(enum pixel_format format)
{
        if (format == PIXEL_FORMAT_420BPP8 ||
                        format == PIXEL_FORMAT_420BPP10)
                return true;
        else
                return false;
}

static enum dscl_mode_sel dpp1_dscl_get_dscl_mode(
                struct dpp *dpp_base,
                const struct scaler_data *data,
                bool dbg_always_scale)
{
        const long long one = dc_fixpt_one.value;

        if (dpp_base->caps->dscl_data_proc_format == DSCL_DATA_PRCESSING_FIXED_FORMAT) {
                /* DSCL is processing data in fixed format */
                if (data->format == PIXEL_FORMAT_FP16)
                        return DSCL_MODE_DSCL_BYPASS;
        }

        if (data->ratios.horz.value == one
                        && data->ratios.vert.value == one
                        && data->ratios.horz_c.value == one
                        && data->ratios.vert_c.value == one
                        && !dbg_always_scale)
                return DSCL_MODE_SCALING_444_BYPASS;

        if (!dpp1_dscl_is_420_format(data->format)) {
                if (dpp1_dscl_is_video_format(data->format))
                        return DSCL_MODE_SCALING_444_YCBCR_ENABLE;
                else
                        return DSCL_MODE_SCALING_444_RGB_ENABLE;
        }
        if (data->ratios.horz.value == one && data->ratios.vert.value == one)
                return DSCL_MODE_SCALING_420_LUMA_BYPASS;
        if (data->ratios.horz_c.value == one && data->ratios.vert_c.value == one)
                return DSCL_MODE_SCALING_420_CHROMA_BYPASS;

        return DSCL_MODE_SCALING_420_YCBCR_ENABLE;
}

static void dpp1_power_on_dscl(
        struct dpp *dpp_base,
        bool power_on)
{
        struct dcn10_dpp *dpp = TO_DCN10_DPP(dpp_base);

        if (dpp->tf_regs->DSCL_MEM_PWR_CTRL) {
                if (power_on) {
                        REG_UPDATE(DSCL_MEM_PWR_CTRL, LUT_MEM_PWR_FORCE, 0);
                        REG_WAIT(DSCL_MEM_PWR_STATUS, LUT_MEM_PWR_STATE, 0, 1, 5);
                } else {
                        if (dpp->base.ctx->dc->debug.enable_mem_low_power.bits.dscl) {
                                dpp->base.ctx->dc->optimized_required = true;
                                dpp->base.deferred_reg_writes.bits.disable_dscl = true;
                        } else {
                                REG_UPDATE(DSCL_MEM_PWR_CTRL, LUT_MEM_PWR_FORCE, 3);
                        }
                }
        }
}


static void dpp1_dscl_set_lb(
        struct dcn10_dpp *dpp,
        const struct line_buffer_params *lb_params,
        enum lb_memory_config mem_size_config)
{
        uint32_t max_partitions = 63; /* Currently hardcoded on all ASICs before DCN 3.2 */

        /* LB */
        if (dpp->base.caps->dscl_data_proc_format == DSCL_DATA_PRCESSING_FIXED_FORMAT) {
                /* DSCL caps: pixel data processed in fixed format */
                uint32_t pixel_depth = dpp1_dscl_get_pixel_depth_val(lb_params->depth);
                uint32_t dyn_pix_depth = lb_params->dynamic_pixel_depth;

                REG_SET_7(LB_DATA_FORMAT, 0,
                        PIXEL_DEPTH, pixel_depth, /* Pixel depth stored in LB */
                        PIXEL_EXPAN_MODE, lb_params->pixel_expan_mode, /* Pixel expansion mode */
                        PIXEL_REDUCE_MODE, 1, /* Pixel reduction mode: Rounding */
                        DYNAMIC_PIXEL_DEPTH, dyn_pix_depth, /* Dynamic expansion pixel depth */
                        DITHER_EN, 0, /* Dithering enable: Disabled */
                        INTERLEAVE_EN, lb_params->interleave_en, /* Interleave source enable */
                        LB_DATA_FORMAT__ALPHA_EN, lb_params->alpha_en); /* Alpha enable */
        } else {
                /* DSCL caps: pixel data processed in float format */
                REG_SET_2(LB_DATA_FORMAT, 0,
                        INTERLEAVE_EN, lb_params->interleave_en, /* Interleave source enable */
                        LB_DATA_FORMAT__ALPHA_EN, lb_params->alpha_en); /* Alpha enable */
        }

        if (dpp->base.caps->max_lb_partitions == 31)
                max_partitions = 31;

        REG_SET_2(LB_MEMORY_CTRL, 0,
                MEMORY_CONFIG, mem_size_config,
                LB_MAX_PARTITIONS, max_partitions);
}

static const uint16_t *dpp1_dscl_get_filter_coeffs_64p(int taps, struct fixed31_32 ratio)
{
        if (taps == 8)
                return get_filter_8tap_64p(ratio);
        else if (taps == 7)
                return get_filter_7tap_64p(ratio);
        else if (taps == 6)
                return get_filter_6tap_64p(ratio);
        else if (taps == 5)
                return get_filter_5tap_64p(ratio);
        else if (taps == 4)
                return get_filter_4tap_64p(ratio);
        else if (taps == 3)
                return get_filter_3tap_64p(ratio);
        else if (taps == 2)
                return get_filter_2tap_64p();
        else if (taps == 1)
                return NULL;
        else {
                /* should never happen, bug */
                BREAK_TO_DEBUGGER();
                return NULL;
        }
}

static void dpp1_dscl_set_scaler_filter(
                struct dcn10_dpp *dpp,
                uint32_t taps,
                enum dcn10_coef_filter_type_sel filter_type,
                const uint16_t *filter)
{
        const int tap_pairs = (taps + 1) / 2;
        int phase;
        int pair;
        uint16_t odd_coef, even_coef;

        REG_SET_3(SCL_COEF_RAM_TAP_SELECT, 0,
                SCL_COEF_RAM_TAP_PAIR_IDX, 0,
                SCL_COEF_RAM_PHASE, 0,
                SCL_COEF_RAM_FILTER_TYPE, filter_type);

        for (phase = 0; phase < (NUM_PHASES / 2 + 1); phase++) {
                for (pair = 0; pair < tap_pairs; pair++) {
                        even_coef = filter[phase * taps + 2 * pair];
                        if ((pair * 2 + 1) < taps)
                                odd_coef = filter[phase * taps + 2 * pair + 1];
                        else
                                odd_coef = 0;

                        REG_SET_4(SCL_COEF_RAM_TAP_DATA, 0,
                                /* Even tap coefficient (bits 1:0 fixed to 0) */
                                SCL_COEF_RAM_EVEN_TAP_COEF, even_coef,
                                /* Write/read control for even coefficient */
                                SCL_COEF_RAM_EVEN_TAP_COEF_EN, 1,
                                /* Odd tap coefficient (bits 1:0 fixed to 0) */
                                SCL_COEF_RAM_ODD_TAP_COEF, odd_coef,
                                /* Write/read control for odd coefficient */
                                SCL_COEF_RAM_ODD_TAP_COEF_EN, 1);
                }
        }

}

static void dpp1_dscl_set_scl_filter(
                struct dcn10_dpp *dpp,
                const struct scaler_data *scl_data,
                bool chroma_coef_mode)
{
        bool h_2tap_hardcode_coef_en = false;
        bool v_2tap_hardcode_coef_en = false;
        bool h_2tap_sharp_en = false;
        bool v_2tap_sharp_en = false;
        uint32_t h_2tap_sharp_factor = scl_data->sharpness.horz;
        uint32_t v_2tap_sharp_factor = scl_data->sharpness.vert;
        bool coef_ram_current;
        const uint16_t *filter_h = NULL;
        const uint16_t *filter_v = NULL;
        const uint16_t *filter_h_c = NULL;
        const uint16_t *filter_v_c = NULL;

        h_2tap_hardcode_coef_en = scl_data->taps.h_taps < 3
                                        && scl_data->taps.h_taps_c < 3
                && (scl_data->taps.h_taps > 1 && scl_data->taps.h_taps_c > 1);
        v_2tap_hardcode_coef_en = scl_data->taps.v_taps < 3
                                        && scl_data->taps.v_taps_c < 3
                && (scl_data->taps.v_taps > 1 && scl_data->taps.v_taps_c > 1);

        h_2tap_sharp_en = h_2tap_hardcode_coef_en && h_2tap_sharp_factor != 0;
        v_2tap_sharp_en = v_2tap_hardcode_coef_en && v_2tap_sharp_factor != 0;

        REG_UPDATE_6(DSCL_2TAP_CONTROL,
                SCL_H_2TAP_HARDCODE_COEF_EN, h_2tap_hardcode_coef_en,
                SCL_H_2TAP_SHARP_EN, h_2tap_sharp_en,
                SCL_H_2TAP_SHARP_FACTOR, h_2tap_sharp_factor,
                SCL_V_2TAP_HARDCODE_COEF_EN, v_2tap_hardcode_coef_en,
                SCL_V_2TAP_SHARP_EN, v_2tap_sharp_en,
                SCL_V_2TAP_SHARP_FACTOR, v_2tap_sharp_factor);

        if (!v_2tap_hardcode_coef_en || !h_2tap_hardcode_coef_en) {
                bool filter_updated = false;

                filter_h = dpp1_dscl_get_filter_coeffs_64p(
                                scl_data->taps.h_taps, scl_data->ratios.horz);
                filter_v = dpp1_dscl_get_filter_coeffs_64p(
                                scl_data->taps.v_taps, scl_data->ratios.vert);

                filter_updated = (filter_h && (filter_h != dpp->filter_h))
                                || (filter_v && (filter_v != dpp->filter_v));

                if (chroma_coef_mode) {
                        filter_h_c = dpp1_dscl_get_filter_coeffs_64p(
                                        scl_data->taps.h_taps_c, scl_data->ratios.horz_c);
                        filter_v_c = dpp1_dscl_get_filter_coeffs_64p(
                                        scl_data->taps.v_taps_c, scl_data->ratios.vert_c);
                        filter_updated = filter_updated || (filter_h_c && (filter_h_c != dpp->filter_h_c))
                                                        || (filter_v_c && (filter_v_c != dpp->filter_v_c));
                }

                if (filter_updated) {
                        uint32_t scl_mode = REG_READ(SCL_MODE);

                        if (!h_2tap_hardcode_coef_en && filter_h) {
                                dpp1_dscl_set_scaler_filter(
                                        dpp, scl_data->taps.h_taps,
                                        SCL_COEF_LUMA_HORZ_FILTER, filter_h);
                        }
                        dpp->filter_h = filter_h;
                        if (!v_2tap_hardcode_coef_en && filter_v) {
                                dpp1_dscl_set_scaler_filter(
                                        dpp, scl_data->taps.v_taps,
                                        SCL_COEF_LUMA_VERT_FILTER, filter_v);
                        }
                        dpp->filter_v = filter_v;
                        if (chroma_coef_mode) {
                                if (!h_2tap_hardcode_coef_en && filter_h_c) {
                                        dpp1_dscl_set_scaler_filter(
                                                dpp, scl_data->taps.h_taps_c,
                                                SCL_COEF_CHROMA_HORZ_FILTER, filter_h_c);
                                }
                                if (!v_2tap_hardcode_coef_en && filter_v_c) {
                                        dpp1_dscl_set_scaler_filter(
                                                dpp, scl_data->taps.v_taps_c,
                                                SCL_COEF_CHROMA_VERT_FILTER, filter_v_c);
                                }
                        }
                        dpp->filter_h_c = filter_h_c;
                        dpp->filter_v_c = filter_v_c;

                        coef_ram_current = get_reg_field_value_ex(
                                scl_mode, dpp->tf_mask->SCL_COEF_RAM_SELECT_CURRENT,
                                dpp->tf_shift->SCL_COEF_RAM_SELECT_CURRENT);

                        /* Swap coefficient RAM and set chroma coefficient mode */
                        REG_SET_2(SCL_MODE, scl_mode,
                                        SCL_COEF_RAM_SELECT, !coef_ram_current,
                                        SCL_CHROMA_COEF_MODE, chroma_coef_mode);
                }
        }
}

static int dpp1_dscl_get_lb_depth_bpc(enum lb_pixel_depth depth)
{
        if (depth == LB_PIXEL_DEPTH_30BPP)
                return 10;
        else if (depth == LB_PIXEL_DEPTH_24BPP)
                return 8;
        else if (depth == LB_PIXEL_DEPTH_18BPP)
                return 6;
        else if (depth == LB_PIXEL_DEPTH_36BPP)
                return 12;
        else {
                BREAK_TO_DEBUGGER();
                return -1; /* Unsupported */
        }
}

void dpp1_dscl_calc_lb_num_partitions(
                const struct scaler_data *scl_data,
                enum lb_memory_config lb_config,
                int *num_part_y,
                int *num_part_c)
{
        int lb_memory_size, lb_memory_size_c, lb_memory_size_a, num_partitions_a,
        lb_bpc, memory_line_size_y, memory_line_size_c, memory_line_size_a;

        int line_size = scl_data->viewport.width < scl_data->recout.width ?
                        scl_data->viewport.width : scl_data->recout.width;
        int line_size_c = scl_data->viewport_c.width < scl_data->recout.width ?
                        scl_data->viewport_c.width : scl_data->recout.width;

        if (line_size == 0)
                line_size = 1;

        if (line_size_c == 0)
                line_size_c = 1;


        lb_bpc = dpp1_dscl_get_lb_depth_bpc(scl_data->lb_params.depth);
        memory_line_size_y = (line_size * lb_bpc + 71) / 72; /* +71 to ceil */
        memory_line_size_c = (line_size_c * lb_bpc + 71) / 72; /* +71 to ceil */
        memory_line_size_a = (line_size + 5) / 6; /* +5 to ceil */

        if (lb_config == LB_MEMORY_CONFIG_1) {
                lb_memory_size = 816;
                lb_memory_size_c = 816;
                lb_memory_size_a = 984;
        } else if (lb_config == LB_MEMORY_CONFIG_2) {
                lb_memory_size = 1088;
                lb_memory_size_c = 1088;
                lb_memory_size_a = 1312;
        } else if (lb_config == LB_MEMORY_CONFIG_3) {
                /* 420 mode: using 3rd mem from Y, Cr and Cb */
                lb_memory_size = 816 + 1088 + 848 + 848 + 848;
                lb_memory_size_c = 816 + 1088;
                lb_memory_size_a = 984 + 1312 + 456;
        } else {
                lb_memory_size = 816 + 1088 + 848;
                lb_memory_size_c = 816 + 1088 + 848;
                lb_memory_size_a = 984 + 1312 + 456;
        }
        *num_part_y = lb_memory_size / memory_line_size_y;
        *num_part_c = lb_memory_size_c / memory_line_size_c;
        num_partitions_a = lb_memory_size_a / memory_line_size_a;

        if (scl_data->lb_params.alpha_en
                        && (num_partitions_a < *num_part_y))
                *num_part_y = num_partitions_a;

        if (*num_part_y > 64)
                *num_part_y = 64;
        if (*num_part_c > 64)
                *num_part_c = 64;

}

bool dpp1_dscl_is_lb_conf_valid(int ceil_vratio, int num_partitions, int vtaps)
{
        if (ceil_vratio > 2)
                return vtaps <= (num_partitions - ceil_vratio + 2);
        else
                return vtaps <= num_partitions;
}

/*find first match configuration which meets the min required lb size*/
static enum lb_memory_config dpp1_dscl_find_lb_memory_config(struct dcn10_dpp *dpp,
                const struct scaler_data *scl_data)
{
        int num_part_y, num_part_c;
        int vtaps = scl_data->taps.v_taps;
        int vtaps_c = scl_data->taps.v_taps_c;
        int ceil_vratio = dc_fixpt_ceil(scl_data->ratios.vert);
        int ceil_vratio_c = dc_fixpt_ceil(scl_data->ratios.vert_c);

        if (dpp->base.ctx->dc->debug.use_max_lb) {
                if (scl_data->format == PIXEL_FORMAT_420BPP8
                                || scl_data->format == PIXEL_FORMAT_420BPP10)
                        return LB_MEMORY_CONFIG_3;
                return LB_MEMORY_CONFIG_0;
        }

        dpp->base.caps->dscl_calc_lb_num_partitions(
                        scl_data, LB_MEMORY_CONFIG_1, &num_part_y, &num_part_c);

        if (dpp1_dscl_is_lb_conf_valid(ceil_vratio, num_part_y, vtaps)
                        && dpp1_dscl_is_lb_conf_valid(ceil_vratio_c, num_part_c, vtaps_c))
                return LB_MEMORY_CONFIG_1;

        dpp->base.caps->dscl_calc_lb_num_partitions(
                        scl_data, LB_MEMORY_CONFIG_2, &num_part_y, &num_part_c);

        if (dpp1_dscl_is_lb_conf_valid(ceil_vratio, num_part_y, vtaps)
                        && dpp1_dscl_is_lb_conf_valid(ceil_vratio_c, num_part_c, vtaps_c))
                return LB_MEMORY_CONFIG_2;

        if (scl_data->format == PIXEL_FORMAT_420BPP8
                        || scl_data->format == PIXEL_FORMAT_420BPP10) {
                dpp->base.caps->dscl_calc_lb_num_partitions(
                                scl_data, LB_MEMORY_CONFIG_3, &num_part_y, &num_part_c);

                if (dpp1_dscl_is_lb_conf_valid(ceil_vratio, num_part_y, vtaps)
                                && dpp1_dscl_is_lb_conf_valid(ceil_vratio_c, num_part_c, vtaps_c))
                        return LB_MEMORY_CONFIG_3;
        }

        dpp->base.caps->dscl_calc_lb_num_partitions(
                        scl_data, LB_MEMORY_CONFIG_0, &num_part_y, &num_part_c);

        /*Ensure we can support the requested number of vtaps*/
        ASSERT(dpp1_dscl_is_lb_conf_valid(ceil_vratio, num_part_y, vtaps)
                        && dpp1_dscl_is_lb_conf_valid(ceil_vratio_c, num_part_c, vtaps_c));

        return LB_MEMORY_CONFIG_0;
}


static void dpp1_dscl_set_manual_ratio_init(
                struct dcn10_dpp *dpp, const struct scaler_data *data)
{
        uint32_t init_frac = 0;
        uint32_t init_int = 0;

        REG_SET(SCL_HORZ_FILTER_SCALE_RATIO, 0,
                        SCL_H_SCALE_RATIO, dc_fixpt_u3d19(data->ratios.horz) << 5);

        REG_SET(SCL_VERT_FILTER_SCALE_RATIO, 0,
                        SCL_V_SCALE_RATIO, dc_fixpt_u3d19(data->ratios.vert) << 5);

        REG_SET(SCL_HORZ_FILTER_SCALE_RATIO_C, 0,
                        SCL_H_SCALE_RATIO_C, dc_fixpt_u3d19(data->ratios.horz_c) << 5);

        REG_SET(SCL_VERT_FILTER_SCALE_RATIO_C, 0,
                        SCL_V_SCALE_RATIO_C, dc_fixpt_u3d19(data->ratios.vert_c) << 5);

        /*
         * 0.24 format for fraction, first five bits zeroed
         */
        init_frac = dc_fixpt_u0d19(data->inits.h) << 5;
        init_int = dc_fixpt_floor(data->inits.h);
        REG_SET_2(SCL_HORZ_FILTER_INIT, 0,
                SCL_H_INIT_FRAC, init_frac,
                SCL_H_INIT_INT, init_int);

        init_frac = dc_fixpt_u0d19(data->inits.h_c) << 5;
        init_int = dc_fixpt_floor(data->inits.h_c);
        REG_SET_2(SCL_HORZ_FILTER_INIT_C, 0,
                SCL_H_INIT_FRAC_C, init_frac,
                SCL_H_INIT_INT_C, init_int);

        init_frac = dc_fixpt_u0d19(data->inits.v) << 5;
        init_int = dc_fixpt_floor(data->inits.v);
        REG_SET_2(SCL_VERT_FILTER_INIT, 0,
                SCL_V_INIT_FRAC, init_frac,
                SCL_V_INIT_INT, init_int);

        if (REG(SCL_VERT_FILTER_INIT_BOT)) {
                struct fixed31_32 bot = dc_fixpt_add(data->inits.v, data->ratios.vert);

                init_frac = dc_fixpt_u0d19(bot) << 5;
                init_int = dc_fixpt_floor(bot);
                REG_SET_2(SCL_VERT_FILTER_INIT_BOT, 0,
                        SCL_V_INIT_FRAC_BOT, init_frac,
                        SCL_V_INIT_INT_BOT, init_int);
        }

        init_frac = dc_fixpt_u0d19(data->inits.v_c) << 5;
        init_int = dc_fixpt_floor(data->inits.v_c);
        REG_SET_2(SCL_VERT_FILTER_INIT_C, 0,
                SCL_V_INIT_FRAC_C, init_frac,
                SCL_V_INIT_INT_C, init_int);

        if (REG(SCL_VERT_FILTER_INIT_BOT_C)) {
                struct fixed31_32 bot = dc_fixpt_add(data->inits.v_c, data->ratios.vert_c);

                init_frac = dc_fixpt_u0d19(bot) << 5;
                init_int = dc_fixpt_floor(bot);
                REG_SET_2(SCL_VERT_FILTER_INIT_BOT_C, 0,
                        SCL_V_INIT_FRAC_BOT_C, init_frac,
                        SCL_V_INIT_INT_BOT_C, init_int);
        }
}

/**
 * dpp1_dscl_set_recout - Set the first pixel of RECOUT in the OTG active area
 *
 * @dpp: DPP data struct
 * @recout: Rectangle information
 *
 * This function sets the MPC RECOUT_START and RECOUT_SIZE registers based on
 * the values specified in the recount parameter.
 *
 * Note: This function only have effect if AutoCal is disabled.
 */
static void dpp1_dscl_set_recout(struct dcn10_dpp *dpp,
                                 const struct rect *recout)
{
        REG_SET_2(RECOUT_START, 0,
                  /* First pixel of RECOUT in the active OTG area */
                  RECOUT_START_X, recout->x,
                  /* First line of RECOUT in the active OTG area */
                  RECOUT_START_Y, recout->y);

        REG_SET_2(RECOUT_SIZE, 0,
                  /* Number of RECOUT horizontal pixels */
                  RECOUT_WIDTH, recout->width,
                  /* Number of RECOUT vertical lines */
                  RECOUT_HEIGHT, recout->height);
}

/**
 * dpp1_dscl_set_scaler_manual_scale - Manually program scaler and line buffer
 *
 * @dpp_base: High level DPP struct
 * @scl_data: scalaer_data info
 *
 * This is the primary function to program scaler and line buffer in manual
 * scaling mode. To execute the required operations for manual scale, we need
 * to disable AutoCal first.
 */
void dpp1_dscl_set_scaler_manual_scale(struct dpp *dpp_base,
                                       const struct scaler_data *scl_data)
{
        enum lb_memory_config lb_config;
        struct dcn10_dpp *dpp = TO_DCN10_DPP(dpp_base);
        enum dscl_mode_sel dscl_mode = dpp1_dscl_get_dscl_mode(
                        dpp_base, scl_data, dpp_base->ctx->dc->debug.always_scale);
        bool ycbcr = scl_data->format >= PIXEL_FORMAT_VIDEO_BEGIN
                                && scl_data->format <= PIXEL_FORMAT_VIDEO_END;

        if (memcmp(&dpp->scl_data, scl_data, sizeof(*scl_data)) == 0)
                return;

        PERF_TRACE();

        dpp->scl_data = *scl_data;

        if (dpp_base->ctx->dc->debug.enable_mem_low_power.bits.dscl) {
                if (dscl_mode != DSCL_MODE_DSCL_BYPASS)
                        dpp1_power_on_dscl(dpp_base, true);
        }

        /* Autocal off */
        REG_SET_3(DSCL_AUTOCAL, 0,
                AUTOCAL_MODE, AUTOCAL_MODE_OFF,
                AUTOCAL_NUM_PIPE, 0,
                AUTOCAL_PIPE_ID, 0);

        /*clean scaler boundary mode when Autocal off*/
        REG_SET(DSCL_CONTROL, 0,
                SCL_BOUNDARY_MODE, 0);

        /* Recout */
        dpp1_dscl_set_recout(dpp, &scl_data->recout);

        /* MPC Size */
        REG_SET_2(MPC_SIZE, 0,
                /* Number of horizontal pixels of MPC */
                         MPC_WIDTH, scl_data->h_active,
                /* Number of vertical lines of MPC */
                         MPC_HEIGHT, scl_data->v_active);

        /* SCL mode */
        REG_UPDATE(SCL_MODE, DSCL_MODE, dscl_mode);

        if (dscl_mode == DSCL_MODE_DSCL_BYPASS) {
                if (dpp_base->ctx->dc->debug.enable_mem_low_power.bits.dscl)
                        dpp1_power_on_dscl(dpp_base, false);
                return;
        }

        /* LB */
        lb_config =  dpp1_dscl_find_lb_memory_config(dpp, scl_data);
        dpp1_dscl_set_lb(dpp, &scl_data->lb_params, lb_config);

        if (dscl_mode == DSCL_MODE_SCALING_444_BYPASS)
                return;

        /* Black offsets */
        if (REG(SCL_BLACK_OFFSET)) {
                if (ycbcr)
                        REG_SET_2(SCL_BLACK_OFFSET, 0,
                                        SCL_BLACK_OFFSET_RGB_Y, BLACK_OFFSET_RGB_Y,
                                        SCL_BLACK_OFFSET_CBCR, BLACK_OFFSET_CBCR);
                else

                        REG_SET_2(SCL_BLACK_OFFSET, 0,
                                        SCL_BLACK_OFFSET_RGB_Y, BLACK_OFFSET_RGB_Y,
                                        SCL_BLACK_OFFSET_CBCR, BLACK_OFFSET_RGB_Y);
        }

        /* Manually calculate scale ratio and init values */
        dpp1_dscl_set_manual_ratio_init(dpp, scl_data);

        /* HTaps/VTaps */
        REG_SET_4(SCL_TAP_CONTROL, 0,
                SCL_V_NUM_TAPS, scl_data->taps.v_taps - 1,
                SCL_H_NUM_TAPS, scl_data->taps.h_taps - 1,
                SCL_V_NUM_TAPS_C, scl_data->taps.v_taps_c - 1,
                SCL_H_NUM_TAPS_C, scl_data->taps.h_taps_c - 1);

        dpp1_dscl_set_scl_filter(dpp, scl_data, ycbcr);
        PERF_TRACE();
}