/*
 * Copyright 2017 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */

#include "dml1_display_rq_dlg_calc.h"
#include "display_mode_lib.h"

#include "dml_inline_defs.h"

/*
 * NOTE:
 *   This file is gcc-parseable HW gospel, coming straight from HW engineers.
 *
 * It doesn't adhere to Linux kernel style and sometimes will do things in odd
 * ways. Unless there is something clearly wrong with it the code should
 * remain as-is as it provides us with a guarantee from HW that it is correct.
 */

static unsigned int get_bytes_per_element(enum source_format_class source_format, bool is_chroma)
{
        unsigned int ret_val = 0;

        if (source_format == dm_444_16) {
                if (!is_chroma)
                        ret_val = 2;
        } else if (source_format == dm_444_32) {
                if (!is_chroma)
                        ret_val = 4;
        } else if (source_format == dm_444_64) {
                if (!is_chroma)
                        ret_val = 8;
        } else if (source_format == dm_420_8) {
                if (is_chroma)
                        ret_val = 2;
                else
                        ret_val = 1;
        } else if (source_format == dm_420_10) {
                if (is_chroma)
                        ret_val = 4;
                else
                        ret_val = 2;
        }
        return ret_val;
}

static bool is_dual_plane(enum source_format_class source_format)
{
        bool ret_val = 0;

        if ((source_format == dm_420_8) || (source_format == dm_420_10))
                ret_val = 1;

        return ret_val;
}

static void get_blk256_size(
                unsigned int *blk256_width,
                unsigned int *blk256_height,
                unsigned int bytes_per_element)
{
        if (bytes_per_element == 1) {
                *blk256_width = 16;
                *blk256_height = 16;
        } else if (bytes_per_element == 2) {
                *blk256_width = 16;
                *blk256_height = 8;
        } else if (bytes_per_element == 4) {
                *blk256_width = 8;
                *blk256_height = 8;
        } else if (bytes_per_element == 8) {
                *blk256_width = 8;
                *blk256_height = 4;
        }
}

static double get_refcyc_per_delivery(
                struct display_mode_lib *mode_lib,
                double refclk_freq_in_mhz,
                double pclk_freq_in_mhz,
                unsigned int recout_width,
                double vratio,
                double hscale_pixel_rate,
                unsigned int delivery_width,
                unsigned int req_per_swath_ub)
{
        double refcyc_per_delivery = 0.0;

        if (vratio <= 1.0) {
                refcyc_per_delivery = (double) refclk_freq_in_mhz * (double) recout_width
                                / pclk_freq_in_mhz / (double) req_per_swath_ub;
        } else {
                refcyc_per_delivery = (double) refclk_freq_in_mhz * (double) delivery_width
                                / (double) hscale_pixel_rate / (double) req_per_swath_ub;
        }

        DTRACE("DLG: %s: refclk_freq_in_mhz = %3.2f", __func__, refclk_freq_in_mhz);
        DTRACE("DLG: %s: pclk_freq_in_mhz   = %3.2f", __func__, pclk_freq_in_mhz);
        DTRACE("DLG: %s: recout_width       = %d", __func__, recout_width);
        DTRACE("DLG: %s: vratio             = %3.2f", __func__, vratio);
        DTRACE("DLG: %s: req_per_swath_ub   = %d", __func__, req_per_swath_ub);
        DTRACE("DLG: %s: refcyc_per_delivery= %3.2f", __func__, refcyc_per_delivery);

        return refcyc_per_delivery;

}

static double get_vratio_pre(
                struct display_mode_lib *mode_lib,
                unsigned int max_num_sw,
                unsigned int max_partial_sw,
                unsigned int swath_height,
                double vinit,
                double l_sw)
{
        double prefill = dml_floor(vinit, 1);
        double vratio_pre = 1.0;

        vratio_pre = (max_num_sw * swath_height + max_partial_sw) / l_sw;

        if (swath_height > 4) {
                double tmp0 = (max_num_sw * swath_height) / (l_sw - (prefill - 3.0) / 2.0);

                if (tmp0 > vratio_pre)
                        vratio_pre = tmp0;
        }

        DTRACE("DLG: %s: max_num_sw        = %0d", __func__, max_num_sw);
        DTRACE("DLG: %s: max_partial_sw    = %0d", __func__, max_partial_sw);
        DTRACE("DLG: %s: swath_height      = %0d", __func__, swath_height);
        DTRACE("DLG: %s: vinit             = %3.2f", __func__, vinit);
        DTRACE("DLG: %s: vratio_pre        = %3.2f", __func__, vratio_pre);

        if (vratio_pre < 1.0) {
                DTRACE("WARNING_DLG: %s:  vratio_pre=%3.2f < 1.0, set to 1.0", __func__, vratio_pre);
                vratio_pre = 1.0;
        }

        if (vratio_pre > 4.0) {
                DTRACE(
                                "WARNING_DLG: %s:  vratio_pre=%3.2f > 4.0 (max scaling ratio). set to 4.0",
                                __func__,
                                vratio_pre);
                vratio_pre = 4.0;
        }

        return vratio_pre;
}

static void get_swath_need(
                struct display_mode_lib *mode_lib,
                unsigned int *max_num_sw,
                unsigned int *max_partial_sw,
                unsigned int swath_height,
                double vinit)
{
        double prefill = dml_floor(vinit, 1);
        unsigned int max_partial_sw_int;

        DTRACE("DLG: %s: swath_height      = %0d", __func__, swath_height);
        DTRACE("DLG: %s: vinit             = %3.2f", __func__, vinit);

        ASSERT(prefill > 0.0 && prefill <= 8.0);

        *max_num_sw = (unsigned int) (dml_ceil((prefill - 1.0) / (double) swath_height, 1) + 1.0); /* prefill has to be >= 1 */
        max_partial_sw_int =
                        (prefill == 1) ?
                                        (swath_height - 1) :
                                        ((unsigned int) (prefill - 2.0) % swath_height);
        *max_partial_sw = (max_partial_sw_int < 1) ? 1 : max_partial_sw_int; /* ensure minimum of 1 is used */

        DTRACE("DLG: %s: max_num_sw        = %0d", __func__, *max_num_sw);
        DTRACE("DLG: %s: max_partial_sw    = %0d", __func__, *max_partial_sw);
}

static unsigned int get_blk_size_bytes(const enum source_macro_tile_size tile_size)
{
        if (tile_size == dm_256k_tile)
                return (256 * 1024);
        else if (tile_size == dm_64k_tile)
                return (64 * 1024);
        else
                return (4 * 1024);
}

static void extract_rq_sizing_regs(
                struct display_mode_lib *mode_lib,
                struct _vcs_dpi_display_data_rq_regs_st *rq_regs,
                const struct _vcs_dpi_display_data_rq_sizing_params_st rq_sizing)
{
        DTRACE("DLG: %s: rq_sizing param", __func__);
        print__data_rq_sizing_params_st(mode_lib, rq_sizing);

        rq_regs->chunk_size = dml_log2(rq_sizing.chunk_bytes) - 10;

        if (rq_sizing.min_chunk_bytes == 0)
                rq_regs->min_chunk_size = 0;
        else
                rq_regs->min_chunk_size = dml_log2(rq_sizing.min_chunk_bytes) - 8 + 1;

        rq_regs->meta_chunk_size = dml_log2(rq_sizing.meta_chunk_bytes) - 10;
        if (rq_sizing.min_meta_chunk_bytes == 0)
                rq_regs->min_meta_chunk_size = 0;
        else
                rq_regs->min_meta_chunk_size = dml_log2(rq_sizing.min_meta_chunk_bytes) - 6 + 1;

        rq_regs->dpte_group_size = dml_log2(rq_sizing.dpte_group_bytes) - 6;
        rq_regs->mpte_group_size = dml_log2(rq_sizing.mpte_group_bytes) - 6;
}

void dml1_extract_rq_regs(
                struct display_mode_lib *mode_lib,
                struct _vcs_dpi_display_rq_regs_st *rq_regs,
                const struct _vcs_dpi_display_rq_params_st rq_param)
{
        unsigned int detile_buf_size_in_bytes = mode_lib->ip.det_buffer_size_kbytes * 1024;
        unsigned int detile_buf_plane1_addr = 0;

        extract_rq_sizing_regs(mode_lib, &(rq_regs->rq_regs_l), rq_param.sizing.rq_l);
        if (rq_param.yuv420)
                extract_rq_sizing_regs(mode_lib, &(rq_regs->rq_regs_c), rq_param.sizing.rq_c);

        rq_regs->rq_regs_l.swath_height = dml_log2(rq_param.dlg.rq_l.swath_height);
        rq_regs->rq_regs_c.swath_height = dml_log2(rq_param.dlg.rq_c.swath_height);

        /* FIXME: take the max between luma, chroma chunk size?
         * okay for now, as we are setting chunk_bytes to 8kb anyways
         */
        if (rq_param.sizing.rq_l.chunk_bytes >= 32 * 1024) { /*32kb */
                rq_regs->drq_expansion_mode = 0;
        } else {
                rq_regs->drq_expansion_mode = 2;
        }
        rq_regs->prq_expansion_mode = 1;
        rq_regs->mrq_expansion_mode = 1;
        rq_regs->crq_expansion_mode = 1;

        if (rq_param.yuv420) {
                if ((double) rq_param.misc.rq_l.stored_swath_bytes
                                / (double) rq_param.misc.rq_c.stored_swath_bytes <= 1.5) {
                        detile_buf_plane1_addr = (detile_buf_size_in_bytes / 2.0 / 64.0); /* half to chroma */
                } else {
                        detile_buf_plane1_addr = dml_round_to_multiple(
                                        (unsigned int) ((2.0 * detile_buf_size_in_bytes) / 3.0),
                                        256,
                                        0) / 64.0; /* 2/3 to chroma */
                }
        }
        rq_regs->plane1_base_address = detile_buf_plane1_addr;
}

static void handle_det_buf_split(
                struct display_mode_lib *mode_lib,
                struct _vcs_dpi_display_rq_params_st *rq_param,
                const struct _vcs_dpi_display_pipe_source_params_st pipe_src_param)
{
        unsigned int total_swath_bytes = 0;
        unsigned int swath_bytes_l = 0;
        unsigned int swath_bytes_c = 0;
        unsigned int full_swath_bytes_packed_l = 0;
        unsigned int full_swath_bytes_packed_c = 0;
        bool req128_l = 0;
        bool req128_c = 0;
        bool surf_linear = (pipe_src_param.sw_mode == dm_sw_linear);
        bool surf_vert = (pipe_src_param.source_scan == dm_vert);
        unsigned int log2_swath_height_l = 0;
        unsigned int log2_swath_height_c = 0;
        unsigned int detile_buf_size_in_bytes = mode_lib->ip.det_buffer_size_kbytes * 1024;

        full_swath_bytes_packed_l = rq_param->misc.rq_l.full_swath_bytes;
        full_swath_bytes_packed_c = rq_param->misc.rq_c.full_swath_bytes;

        if (rq_param->yuv420_10bpc) {
                full_swath_bytes_packed_l = dml_round_to_multiple(
                                rq_param->misc.rq_l.full_swath_bytes * 2 / 3,
                                256,
                                1) + 256;
                full_swath_bytes_packed_c = dml_round_to_multiple(
                                rq_param->misc.rq_c.full_swath_bytes * 2 / 3,
                                256,
                                1) + 256;
        }

        if (rq_param->yuv420) {
                total_swath_bytes = 2 * full_swath_bytes_packed_l + 2 * full_swath_bytes_packed_c;

                if (total_swath_bytes <= detile_buf_size_in_bytes) { /*full 256b request */
                        req128_l = 0;
                        req128_c = 0;
                        swath_bytes_l = full_swath_bytes_packed_l;
                        swath_bytes_c = full_swath_bytes_packed_c;
                } else { /*128b request (for luma only for yuv420 8bpc) */
                        req128_l = 1;
                        req128_c = 0;
                        swath_bytes_l = full_swath_bytes_packed_l / 2;
                        swath_bytes_c = full_swath_bytes_packed_c;
                }

                /* Bug workaround, luma and chroma req size needs to be the same. (see: DEGVIDCN10-137)
                 * TODO: Remove after rtl fix
                 */
                if (req128_l == 1) {
                        req128_c = 1;
                        DTRACE("DLG: %s: bug workaround DEGVIDCN10-137", __func__);
                }

                /* Note: assumption, the config that pass in will fit into
                 *       the detiled buffer.
                 */
        } else {
                total_swath_bytes = 2 * full_swath_bytes_packed_l;

                if (total_swath_bytes <= detile_buf_size_in_bytes)
                        req128_l = 0;
                else
                        req128_l = 1;

                swath_bytes_l = total_swath_bytes;
                swath_bytes_c = 0;
        }
        rq_param->misc.rq_l.stored_swath_bytes = swath_bytes_l;
        rq_param->misc.rq_c.stored_swath_bytes = swath_bytes_c;

        if (surf_linear) {
                log2_swath_height_l = 0;
                log2_swath_height_c = 0;
        } else if (!surf_vert) {
                log2_swath_height_l = dml_log2(rq_param->misc.rq_l.blk256_height) - req128_l;
                log2_swath_height_c = dml_log2(rq_param->misc.rq_c.blk256_height) - req128_c;
        } else {
                log2_swath_height_l = dml_log2(rq_param->misc.rq_l.blk256_width) - req128_l;
                log2_swath_height_c = dml_log2(rq_param->misc.rq_c.blk256_width) - req128_c;
        }
        rq_param->dlg.rq_l.swath_height = 1 << log2_swath_height_l;
        rq_param->dlg.rq_c.swath_height = 1 << log2_swath_height_c;

        DTRACE("DLG: %s: req128_l = %0d", __func__, req128_l);
        DTRACE("DLG: %s: req128_c = %0d", __func__, req128_c);
        DTRACE("DLG: %s: full_swath_bytes_packed_l = %0d", __func__, full_swath_bytes_packed_l);
        DTRACE("DLG: %s: full_swath_bytes_packed_c = %0d", __func__, full_swath_bytes_packed_c);
}

/* Need refactor. */
static void dml1_rq_dlg_get_row_heights(
                struct display_mode_lib *mode_lib,
                unsigned int *o_dpte_row_height,
                unsigned int *o_meta_row_height,
                unsigned int vp_width,
                unsigned int data_pitch,
                int source_format,
                int tiling,
                int macro_tile_size,
                int source_scan,
                int is_chroma)
{
        bool surf_linear = (tiling == dm_sw_linear);
        bool surf_vert = (source_scan == dm_vert);

        unsigned int bytes_per_element = get_bytes_per_element(
                        (enum source_format_class) source_format,
                        is_chroma);
        unsigned int log2_bytes_per_element = dml_log2(bytes_per_element);
        unsigned int blk256_width = 0;
        unsigned int blk256_height = 0;

        unsigned int log2_blk256_height;
        unsigned int blk_bytes;
        unsigned int log2_blk_bytes;
        unsigned int log2_blk_height;
        unsigned int log2_blk_width;
        unsigned int log2_meta_req_bytes;
        unsigned int log2_meta_req_height;
        unsigned int log2_meta_req_width;
        unsigned int log2_meta_row_height;
        unsigned int log2_vmpg_bytes;
        unsigned int dpte_buf_in_pte_reqs;
        unsigned int log2_vmpg_height;
        unsigned int log2_vmpg_width;
        unsigned int log2_dpte_req_height_ptes;
        unsigned int log2_dpte_req_width_ptes;
        unsigned int log2_dpte_req_height;
        unsigned int log2_dpte_req_width;
        unsigned int log2_dpte_row_height_linear;
        unsigned int log2_dpte_row_height;
        unsigned int dpte_req_width;

        if (surf_linear) {
                blk256_width = 256;
                blk256_height = 1;
        } else {
                get_blk256_size(&blk256_width, &blk256_height, bytes_per_element);
        }

        log2_blk256_height = dml_log2((double) blk256_height);
        blk_bytes = surf_linear ?
                        256 : get_blk_size_bytes((enum source_macro_tile_size) macro_tile_size);
        log2_blk_bytes = dml_log2((double) blk_bytes);
        log2_blk_height = 0;
        log2_blk_width = 0;

        /* remember log rule
         * "+" in log is multiply
         * "-" in log is divide
         * "/2" is like square root
         * blk is vertical biased
         */
        if (tiling != dm_sw_linear)
                log2_blk_height = log2_blk256_height
                                + dml_ceil((double) (log2_blk_bytes - 8) / 2.0, 1);
        else
                log2_blk_height = 0; /* blk height of 1 */

        log2_blk_width = log2_blk_bytes - log2_bytes_per_element - log2_blk_height;

        /* ------- */
        /* meta    */
        /* ------- */
        log2_meta_req_bytes = 6; /* meta request is 64b and is 8x8byte meta element */

        /* each 64b meta request for dcn is 8x8 meta elements and
         * a meta element covers one 256b block of the the data surface.
         */
        log2_meta_req_height = log2_blk256_height + 3; /* meta req is 8x8 */
        log2_meta_req_width = log2_meta_req_bytes + 8 - log2_bytes_per_element
                        - log2_meta_req_height;
        log2_meta_row_height = 0;

        /* the dimensions of a meta row are meta_row_width x meta_row_height in elements.
         * calculate upper bound of the meta_row_width
         */
        if (!surf_vert)
                log2_meta_row_height = log2_meta_req_height;
        else
                log2_meta_row_height = log2_meta_req_width;

        *o_meta_row_height = 1 << log2_meta_row_height;

        /* ------ */
        /* dpte   */
        /* ------ */
        log2_vmpg_bytes = dml_log2(mode_lib->soc.vmm_page_size_bytes);
        dpte_buf_in_pte_reqs = mode_lib->ip.dpte_buffer_size_in_pte_reqs_luma;

        log2_vmpg_height = 0;
        log2_vmpg_width = 0;
        log2_dpte_req_height_ptes = 0;
        log2_dpte_req_width_ptes = 0;
        log2_dpte_req_height = 0;
        log2_dpte_req_width = 0;
        log2_dpte_row_height_linear = 0;
        log2_dpte_row_height = 0;
        dpte_req_width = 0; /* 64b dpte req width in data element */

        if (surf_linear)
                log2_vmpg_height = 0; /* one line high */
        else
                log2_vmpg_height = (log2_vmpg_bytes - 8) / 2 + log2_blk256_height;
        log2_vmpg_width = log2_vmpg_bytes - log2_bytes_per_element - log2_vmpg_height;

        /* only 3 possible shapes for dpte request in dimensions of ptes: 8x1, 4x2, 2x4. */
        if (log2_blk_bytes <= log2_vmpg_bytes)
                log2_dpte_req_height_ptes = 0;
        else if (log2_blk_height - log2_vmpg_height >= 2)
                log2_dpte_req_height_ptes = 2;
        else
                log2_dpte_req_height_ptes = log2_blk_height - log2_vmpg_height;
        log2_dpte_req_width_ptes = 3 - log2_dpte_req_height_ptes;

        ASSERT((log2_dpte_req_width_ptes == 3 && log2_dpte_req_height_ptes == 0) || /* 8x1 */
                        (log2_dpte_req_width_ptes == 2 && log2_dpte_req_height_ptes == 1) || /* 4x2 */
                        (log2_dpte_req_width_ptes == 1 && log2_dpte_req_height_ptes == 2)); /* 2x4 */

        /* the dpte request dimensions in data elements is dpte_req_width x dpte_req_height
         * log2_wmpg_width is how much 1 pte represent, now trying to calculate how much 64b pte req represent
         */
        log2_dpte_req_height = log2_vmpg_height + log2_dpte_req_height_ptes;
        log2_dpte_req_width = log2_vmpg_width + log2_dpte_req_width_ptes;
        dpte_req_width = 1 << log2_dpte_req_width;

        /* calculate pitch dpte row buffer can hold
         * round the result down to a power of two.
         */
        if (surf_linear) {
                log2_dpte_row_height_linear = dml_floor(
                                dml_log2(dpte_buf_in_pte_reqs * dpte_req_width / data_pitch),
                                1);

                ASSERT(log2_dpte_row_height_linear >= 3);

                if (log2_dpte_row_height_linear > 7)
                        log2_dpte_row_height_linear = 7;

                log2_dpte_row_height = log2_dpte_row_height_linear;
        } else {
                /* the upper bound of the dpte_row_width without dependency on viewport position follows.  */
                if (!surf_vert)
                        log2_dpte_row_height = log2_dpte_req_height;
                else
                        log2_dpte_row_height =
                                        (log2_blk_width < log2_dpte_req_width) ?
                                                        log2_blk_width : log2_dpte_req_width;
        }

        /* From programming guide:
         * There is a special case of saving only half of ptes returned due to buffer space limits.
         * this case applies to 4 and 8bpe in horizontal access of a vp_width greater than 2560+16
         * when the pte request is 2x4 ptes (which happens when vmpg_bytes =4kb and tile blk_bytes >=64kb).
         */
        if (!surf_vert && vp_width > (2560 + 16) && bytes_per_element >= 4 && log2_vmpg_bytes == 12
                        && log2_blk_bytes >= 16)
                log2_dpte_row_height = log2_dpte_row_height - 1; /*half of the full height */

        *o_dpte_row_height = 1 << log2_dpte_row_height;
}

static void get_surf_rq_param(
                struct display_mode_lib *mode_lib,
                struct _vcs_dpi_display_data_rq_sizing_params_st *rq_sizing_param,
                struct _vcs_dpi_display_data_rq_dlg_params_st *rq_dlg_param,
                struct _vcs_dpi_display_data_rq_misc_params_st *rq_misc_param,
                const struct _vcs_dpi_display_pipe_source_params_st pipe_src_param,
                bool is_chroma)
{
        bool mode_422 = 0;
        unsigned int vp_width = 0;
        unsigned int vp_height = 0;
        unsigned int data_pitch = 0;
        unsigned int meta_pitch = 0;
        unsigned int ppe = mode_422 ? 2 : 1;
        bool surf_linear;
        bool surf_vert;
        unsigned int bytes_per_element;
        unsigned int log2_bytes_per_element;
        unsigned int blk256_width;
        unsigned int blk256_height;
        unsigned int log2_blk256_width;
        unsigned int log2_blk256_height;
        unsigned int blk_bytes;
        unsigned int log2_blk_bytes;
        unsigned int log2_blk_height;
        unsigned int log2_blk_width;
        unsigned int log2_meta_req_bytes;
        unsigned int log2_meta_req_height;
        unsigned int log2_meta_req_width;
        unsigned int meta_req_width;
        unsigned int meta_req_height;
        unsigned int log2_meta_row_height;
        unsigned int meta_row_width_ub;
        unsigned int log2_meta_chunk_bytes;
        unsigned int log2_meta_chunk_height;
        unsigned int log2_meta_chunk_width;
        unsigned int log2_min_meta_chunk_bytes;
        unsigned int min_meta_chunk_width;
        unsigned int meta_chunk_width;
        unsigned int meta_chunk_per_row_int;
        unsigned int meta_row_remainder;
        unsigned int meta_chunk_threshold;
        unsigned int meta_blk_bytes;
        unsigned int meta_blk_height;
        unsigned int meta_blk_width;
        unsigned int meta_surface_bytes;
        unsigned int vmpg_bytes;
        unsigned int meta_pte_req_per_frame_ub;
        unsigned int meta_pte_bytes_per_frame_ub;
        unsigned int log2_vmpg_bytes;
        unsigned int dpte_buf_in_pte_reqs;
        unsigned int log2_vmpg_height;
        unsigned int log2_vmpg_width;
        unsigned int log2_dpte_req_height_ptes;
        unsigned int log2_dpte_req_width_ptes;
        unsigned int log2_dpte_req_height;
        unsigned int log2_dpte_req_width;
        unsigned int log2_dpte_row_height_linear;
        unsigned int log2_dpte_row_height;
        unsigned int log2_dpte_group_width;
        unsigned int dpte_row_width_ub;
        unsigned int dpte_row_height;
        unsigned int dpte_req_height;
        unsigned int dpte_req_width;
        unsigned int dpte_group_width;
        unsigned int log2_dpte_group_bytes;
        unsigned int log2_dpte_group_length;
        unsigned int func_meta_row_height, func_dpte_row_height;

        /* FIXME check if ppe apply for both luma and chroma in 422 case */
        if (is_chroma) {
                vp_width = pipe_src_param.viewport_width_c / ppe;
                vp_height = pipe_src_param.viewport_height_c;
                data_pitch = pipe_src_param.data_pitch_c;
                meta_pitch = pipe_src_param.meta_pitch_c;
        } else {
                vp_width = pipe_src_param.viewport_width / ppe;
                vp_height = pipe_src_param.viewport_height;
                data_pitch = pipe_src_param.data_pitch;
                meta_pitch = pipe_src_param.meta_pitch;
        }

        rq_sizing_param->chunk_bytes = 8192;

        if (rq_sizing_param->chunk_bytes == 64 * 1024)
                rq_sizing_param->min_chunk_bytes = 0;
        else
                rq_sizing_param->min_chunk_bytes = 1024;

        rq_sizing_param->meta_chunk_bytes = 2048;
        rq_sizing_param->min_meta_chunk_bytes = 256;

        rq_sizing_param->mpte_group_bytes = 2048;

        surf_linear = (pipe_src_param.sw_mode == dm_sw_linear);
        surf_vert = (pipe_src_param.source_scan == dm_vert);

        bytes_per_element = get_bytes_per_element(
                        (enum source_format_class) pipe_src_param.source_format,
                        is_chroma);
        log2_bytes_per_element = dml_log2(bytes_per_element);
        blk256_width = 0;
        blk256_height = 0;

        if (surf_linear) {
                blk256_width = 256 / bytes_per_element;
                blk256_height = 1;
        } else {
                get_blk256_size(&blk256_width, &blk256_height, bytes_per_element);
        }

        DTRACE("DLG: %s: surf_linear        = %d", __func__, surf_linear);
        DTRACE("DLG: %s: surf_vert          = %d", __func__, surf_vert);
        DTRACE("DLG: %s: blk256_width       = %d", __func__, blk256_width);
        DTRACE("DLG: %s: blk256_height      = %d", __func__, blk256_height);

        log2_blk256_width = dml_log2((double) blk256_width);
        log2_blk256_height = dml_log2((double) blk256_height);
        blk_bytes =
                        surf_linear ? 256 : get_blk_size_bytes(
                                                        (enum source_macro_tile_size) pipe_src_param.macro_tile_size);
        log2_blk_bytes = dml_log2((double) blk_bytes);
        log2_blk_height = 0;
        log2_blk_width = 0;

        /* remember log rule
         * "+" in log is multiply
         * "-" in log is divide
         * "/2" is like square root
         * blk is vertical biased
         */
        if (pipe_src_param.sw_mode != dm_sw_linear)
                log2_blk_height = log2_blk256_height
                                + dml_ceil((double) (log2_blk_bytes - 8) / 2.0, 1);
        else
                log2_blk_height = 0; /* blk height of 1 */

        log2_blk_width = log2_blk_bytes - log2_bytes_per_element - log2_blk_height;

        if (!surf_vert) {
                rq_dlg_param->swath_width_ub = dml_round_to_multiple(vp_width - 1, blk256_width, 1)
                                + blk256_width;
                rq_dlg_param->req_per_swath_ub = rq_dlg_param->swath_width_ub >> log2_blk256_width;
        } else {
                rq_dlg_param->swath_width_ub = dml_round_to_multiple(
                                vp_height - 1,
                                blk256_height,
                                1) + blk256_height;
                rq_dlg_param->req_per_swath_ub = rq_dlg_param->swath_width_ub >> log2_blk256_height;
        }

        if (!surf_vert)
                rq_misc_param->full_swath_bytes = rq_dlg_param->swath_width_ub * blk256_height
                                * bytes_per_element;
        else
                rq_misc_param->full_swath_bytes = rq_dlg_param->swath_width_ub * blk256_width
                                * bytes_per_element;

        rq_misc_param->blk256_height = blk256_height;
        rq_misc_param->blk256_width = blk256_width;

        /* -------  */
        /* meta     */
        /* -------  */
        log2_meta_req_bytes = 6; /* meta request is 64b and is 8x8byte meta element */

        /* each 64b meta request for dcn is 8x8 meta elements and
         * a meta element covers one 256b block of the the data surface.
         */
        log2_meta_req_height = log2_blk256_height + 3; /* meta req is 8x8 byte, each byte represent 1 blk256 */
        log2_meta_req_width = log2_meta_req_bytes + 8 - log2_bytes_per_element
                        - log2_meta_req_height;
        meta_req_width = 1 << log2_meta_req_width;
        meta_req_height = 1 << log2_meta_req_height;
        log2_meta_row_height = 0;
        meta_row_width_ub = 0;

        /* the dimensions of a meta row are meta_row_width x meta_row_height in elements.
         * calculate upper bound of the meta_row_width
         */
        if (!surf_vert) {
                log2_meta_row_height = log2_meta_req_height;
                meta_row_width_ub = dml_round_to_multiple(vp_width - 1, meta_req_width, 1)
                                + meta_req_width;
                rq_dlg_param->meta_req_per_row_ub = meta_row_width_ub / meta_req_width;
        } else {
                log2_meta_row_height = log2_meta_req_width;
                meta_row_width_ub = dml_round_to_multiple(vp_height - 1, meta_req_height, 1)
                                + meta_req_height;
                rq_dlg_param->meta_req_per_row_ub = meta_row_width_ub / meta_req_height;
        }
        rq_dlg_param->meta_bytes_per_row_ub = rq_dlg_param->meta_req_per_row_ub * 64;

        log2_meta_chunk_bytes = dml_log2(rq_sizing_param->meta_chunk_bytes);
        log2_meta_chunk_height = log2_meta_row_height;

        /*full sized meta chunk width in unit of data elements */
        log2_meta_chunk_width = log2_meta_chunk_bytes + 8 - log2_bytes_per_element
                        - log2_meta_chunk_height;
        log2_min_meta_chunk_bytes = dml_log2(rq_sizing_param->min_meta_chunk_bytes);
        min_meta_chunk_width = 1
                        << (log2_min_meta_chunk_bytes + 8 - log2_bytes_per_element
                                        - log2_meta_chunk_height);
        meta_chunk_width = 1 << log2_meta_chunk_width;
        meta_chunk_per_row_int = (unsigned int) (meta_row_width_ub / meta_chunk_width);
        meta_row_remainder = meta_row_width_ub % meta_chunk_width;
        meta_chunk_threshold = 0;
        meta_blk_bytes = 4096;
        meta_blk_height = blk256_height * 64;
        meta_blk_width = meta_blk_bytes * 256 / bytes_per_element / meta_blk_height;
        meta_surface_bytes = meta_pitch
                        * (dml_round_to_multiple(vp_height - 1, meta_blk_height, 1)
                                        + meta_blk_height) * bytes_per_element / 256;
        vmpg_bytes = mode_lib->soc.vmm_page_size_bytes;
        meta_pte_req_per_frame_ub = (dml_round_to_multiple(
                        meta_surface_bytes - vmpg_bytes,
                        8 * vmpg_bytes,
                        1) + 8 * vmpg_bytes) / (8 * vmpg_bytes);
        meta_pte_bytes_per_frame_ub = meta_pte_req_per_frame_ub * 64; /*64B mpte request */
        rq_dlg_param->meta_pte_bytes_per_frame_ub = meta_pte_bytes_per_frame_ub;

        DTRACE("DLG: %s: meta_blk_height             = %d", __func__, meta_blk_height);
        DTRACE("DLG: %s: meta_blk_width              = %d", __func__, meta_blk_width);
        DTRACE("DLG: %s: meta_surface_bytes          = %d", __func__, meta_surface_bytes);
        DTRACE("DLG: %s: meta_pte_req_per_frame_ub   = %d", __func__, meta_pte_req_per_frame_ub);
        DTRACE("DLG: %s: meta_pte_bytes_per_frame_ub = %d", __func__, meta_pte_bytes_per_frame_ub);

        if (!surf_vert)
                meta_chunk_threshold = 2 * min_meta_chunk_width - meta_req_width;
        else
                meta_chunk_threshold = 2 * min_meta_chunk_width - meta_req_height;

        if (meta_row_remainder <= meta_chunk_threshold)
                rq_dlg_param->meta_chunks_per_row_ub = meta_chunk_per_row_int + 1;
        else
                rq_dlg_param->meta_chunks_per_row_ub = meta_chunk_per_row_int + 2;

        rq_dlg_param->meta_row_height = 1 << log2_meta_row_height;

        /* ------ */
        /* dpte   */
        /* ------ */
        log2_vmpg_bytes = dml_log2(mode_lib->soc.vmm_page_size_bytes);
        dpte_buf_in_pte_reqs = mode_lib->ip.dpte_buffer_size_in_pte_reqs_luma;

        log2_vmpg_height = 0;
        log2_vmpg_width = 0;
        log2_dpte_req_height_ptes = 0;
        log2_dpte_req_width_ptes = 0;
        log2_dpte_req_height = 0;
        log2_dpte_req_width = 0;
        log2_dpte_row_height_linear = 0;
        log2_dpte_row_height = 0;
        log2_dpte_group_width = 0;
        dpte_row_width_ub = 0;
        dpte_row_height = 0;
        dpte_req_height = 0; /* 64b dpte req height in data element */
        dpte_req_width = 0; /* 64b dpte req width in data element */
        dpte_group_width = 0;
        log2_dpte_group_bytes = 0;
        log2_dpte_group_length = 0;

        if (surf_linear)
                log2_vmpg_height = 0; /* one line high */
        else
                log2_vmpg_height = (log2_vmpg_bytes - 8) / 2 + log2_blk256_height;
        log2_vmpg_width = log2_vmpg_bytes - log2_bytes_per_element - log2_vmpg_height;

        /* only 3 possible shapes for dpte request in dimensions of ptes: 8x1, 4x2, 2x4. */
        if (log2_blk_bytes <= log2_vmpg_bytes)
                log2_dpte_req_height_ptes = 0;
        else if (log2_blk_height - log2_vmpg_height >= 2)
                log2_dpte_req_height_ptes = 2;
        else
                log2_dpte_req_height_ptes = log2_blk_height - log2_vmpg_height;
        log2_dpte_req_width_ptes = 3 - log2_dpte_req_height_ptes;

        /* Ensure we only have the 3 shapes */
        ASSERT((log2_dpte_req_width_ptes == 3 && log2_dpte_req_height_ptes == 0) || /* 8x1 */
                        (log2_dpte_req_width_ptes == 2 && log2_dpte_req_height_ptes == 1) || /* 4x2 */
                        (log2_dpte_req_width_ptes == 1 && log2_dpte_req_height_ptes == 2)); /* 2x4 */

        /* The dpte request dimensions in data elements is dpte_req_width x dpte_req_height
         * log2_vmpg_width is how much 1 pte represent, now calculating how much a 64b pte req represent
         * That depends on the pte shape (i.e. 8x1, 4x2, 2x4)
         */
        log2_dpte_req_height = log2_vmpg_height + log2_dpte_req_height_ptes;
        log2_dpte_req_width = log2_vmpg_width + log2_dpte_req_width_ptes;
        dpte_req_height = 1 << log2_dpte_req_height;
        dpte_req_width = 1 << log2_dpte_req_width;

        /* calculate pitch dpte row buffer can hold
         * round the result down to a power of two.
         */
        if (surf_linear) {
                log2_dpte_row_height_linear = dml_floor(
                                dml_log2(dpte_buf_in_pte_reqs * dpte_req_width / data_pitch),
                                1);

                ASSERT(log2_dpte_row_height_linear >= 3);

                if (log2_dpte_row_height_linear > 7)
                        log2_dpte_row_height_linear = 7;

                log2_dpte_row_height = log2_dpte_row_height_linear;
                rq_dlg_param->dpte_row_height = 1 << log2_dpte_row_height;

                /* For linear, the dpte row is pitch dependent and the pte requests wrap at the pitch boundary.
                 * the dpte_row_width_ub is the upper bound of data_pitch*dpte_row_height in elements with this unique buffering.
                 */
                dpte_row_width_ub = dml_round_to_multiple(
                                data_pitch * dpte_row_height - 1,
                                dpte_req_width,
                                1) + dpte_req_width;
                rq_dlg_param->dpte_req_per_row_ub = dpte_row_width_ub / dpte_req_width;
        } else {
                /* for tiled mode, row height is the same as req height and row store up to vp size upper bound */
                if (!surf_vert) {
                        log2_dpte_row_height = log2_dpte_req_height;
                        dpte_row_width_ub = dml_round_to_multiple(vp_width - 1, dpte_req_width, 1)
                                        + dpte_req_width;
                        rq_dlg_param->dpte_req_per_row_ub = dpte_row_width_ub / dpte_req_width;
                } else {
                        log2_dpte_row_height =
                                        (log2_blk_width < log2_dpte_req_width) ?
                                                        log2_blk_width : log2_dpte_req_width;
                        dpte_row_width_ub = dml_round_to_multiple(vp_height - 1, dpte_req_height, 1)
                                        + dpte_req_height;
                        rq_dlg_param->dpte_req_per_row_ub = dpte_row_width_ub / dpte_req_height;
                }
                rq_dlg_param->dpte_row_height = 1 << log2_dpte_row_height;
        }
        rq_dlg_param->dpte_bytes_per_row_ub = rq_dlg_param->dpte_req_per_row_ub * 64;

        /* From programming guide:
         * There is a special case of saving only half of ptes returned due to buffer space limits.
         * this case applies to 4 and 8bpe in horizontal access of a vp_width greater than 2560+16
         * when the pte request is 2x4 ptes (which happens when vmpg_bytes =4kb and tile blk_bytes >=64kb).
         */
        if (!surf_vert && vp_width > (2560 + 16) && bytes_per_element >= 4 && log2_vmpg_bytes == 12
                        && log2_blk_bytes >= 16) {
                log2_dpte_row_height = log2_dpte_row_height - 1; /*half of the full height */
                rq_dlg_param->dpte_row_height = 1 << log2_dpte_row_height;
        }

        /* the dpte_group_bytes is reduced for the specific case of vertical
         * access of a tile surface that has dpte request of 8x1 ptes.
         */
        if (!surf_linear && (log2_dpte_req_height_ptes == 0) && surf_vert) /*reduced, in this case, will have page fault within a group */
                rq_sizing_param->dpte_group_bytes = 512;
        else
                /*full size */
                rq_sizing_param->dpte_group_bytes = 2048;

        /*since pte request size is 64byte, the number of data pte requests per full sized group is as follows.  */
        log2_dpte_group_bytes = dml_log2(rq_sizing_param->dpte_group_bytes);
        log2_dpte_group_length = log2_dpte_group_bytes - 6; /*length in 64b requests  */

        /* full sized data pte group width in elements */
        if (!surf_vert)
                log2_dpte_group_width = log2_dpte_group_length + log2_dpte_req_width;
        else
                log2_dpte_group_width = log2_dpte_group_length + log2_dpte_req_height;

        dpte_group_width = 1 << log2_dpte_group_width;

        /* since dpte groups are only aligned to dpte_req_width and not dpte_group_width,
         * the upper bound for the dpte groups per row is as follows.
         */
        rq_dlg_param->dpte_groups_per_row_ub = dml_ceil(
                        (double) dpte_row_width_ub / dpte_group_width,
                        1);

        dml1_rq_dlg_get_row_heights(
                        mode_lib,
                        &func_dpte_row_height,
                        &func_meta_row_height,
                        vp_width,
                        data_pitch,
                        pipe_src_param.source_format,
                        pipe_src_param.sw_mode,
                        pipe_src_param.macro_tile_size,
                        pipe_src_param.source_scan,
                        is_chroma);

        /* Just a check to make sure this function and the new one give the same
         * result. The standalone get_row_heights() function is based off of the
         * code in this function so the same changes need to be made to both.
         */
        if (rq_dlg_param->meta_row_height != func_meta_row_height) {
                DTRACE(
                                "MISMATCH: rq_dlg_param->meta_row_height = %d",
                                rq_dlg_param->meta_row_height);
                DTRACE("MISMATCH: func_meta_row_height = %d", func_meta_row_height);
                ASSERT(0);
        }

        if (rq_dlg_param->dpte_row_height != func_dpte_row_height) {
                DTRACE(
                                "MISMATCH: rq_dlg_param->dpte_row_height = %d",
                                rq_dlg_param->dpte_row_height);
                DTRACE("MISMATCH: func_dpte_row_height = %d", func_dpte_row_height);
                ASSERT(0);
        }
}

void dml1_rq_dlg_get_rq_params(
                struct display_mode_lib *mode_lib,
                struct _vcs_dpi_display_rq_params_st *rq_param,
                const struct _vcs_dpi_display_pipe_source_params_st pipe_src_param)
{
        /* get param for luma surface */
        rq_param->yuv420 = pipe_src_param.source_format == dm_420_8
                        || pipe_src_param.source_format == dm_420_10;
        rq_param->yuv420_10bpc = pipe_src_param.source_format == dm_420_10;

        get_surf_rq_param(
                        mode_lib,
                        &(rq_param->sizing.rq_l),
                        &(rq_param->dlg.rq_l),
                        &(rq_param->misc.rq_l),
                        pipe_src_param,
                        0);

        if (is_dual_plane((enum source_format_class) pipe_src_param.source_format)) {
                /* get param for chroma surface */
                get_surf_rq_param(
                                mode_lib,
                                &(rq_param->sizing.rq_c),
                                &(rq_param->dlg.rq_c),
                                &(rq_param->misc.rq_c),
                                pipe_src_param,
                                1);
        }

        /* calculate how to split the det buffer space between luma and chroma */
        handle_det_buf_split(mode_lib, rq_param, pipe_src_param);
        print__rq_params_st(mode_lib, *rq_param);
}

/* Note: currently taken in as is.
 * Nice to decouple code from hw register implement and extract code that are repeated for luma and chroma.
 */
void dml1_rq_dlg_get_dlg_params(
                struct display_mode_lib *mode_lib,
                struct _vcs_dpi_display_dlg_regs_st *disp_dlg_regs,
                struct _vcs_dpi_display_ttu_regs_st *disp_ttu_regs,
                const struct _vcs_dpi_display_rq_dlg_params_st rq_dlg_param,
                const struct _vcs_dpi_display_dlg_sys_params_st dlg_sys_param,
                const struct _vcs_dpi_display_e2e_pipe_params_st e2e_pipe_param,
                const bool cstate_en,
                const bool pstate_en,
                const bool vm_en,
                const bool iflip_en)
{
        /* Timing */
        unsigned int htotal = e2e_pipe_param.pipe.dest.htotal;
        unsigned int hblank_end = e2e_pipe_param.pipe.dest.hblank_end;
        unsigned int vblank_start = e2e_pipe_param.pipe.dest.vblank_start;
        unsigned int vblank_end = e2e_pipe_param.pipe.dest.vblank_end;
        bool interlaced = e2e_pipe_param.pipe.dest.interlaced;
        unsigned int min_vblank = mode_lib->ip.min_vblank_lines;

        double pclk_freq_in_mhz = e2e_pipe_param.pipe.dest.pixel_rate_mhz;
        double refclk_freq_in_mhz = e2e_pipe_param.clks_cfg.refclk_mhz;

        double dppclk_freq_in_mhz = e2e_pipe_param.clks_cfg.dppclk_mhz;
        double dispclk_freq_in_mhz = e2e_pipe_param.clks_cfg.dispclk_mhz;

        double ref_freq_to_pix_freq;
        double prefetch_xy_calc_in_dcfclk;
        double min_dcfclk_mhz;
        double t_calc_us;
        double min_ttu_vblank;
        double min_dst_y_ttu_vblank;
        unsigned int dlg_vblank_start;
        bool dcc_en;
        bool dual_plane;
        bool mode_422;
        unsigned int access_dir;
        unsigned int bytes_per_element_l;
        unsigned int bytes_per_element_c;
        unsigned int vp_height_l;
        unsigned int vp_width_l;
        unsigned int vp_height_c;
        unsigned int vp_width_c;
        unsigned int htaps_l;
        unsigned int htaps_c;
        double hratios_l;
        double hratios_c;
        double vratio_l;
        double vratio_c;
        double line_time_in_us;
        double vinit_l;
        double vinit_c;
        double vinit_bot_l;
        double vinit_bot_c;
        unsigned int swath_height_l;
        unsigned int swath_width_ub_l;
        unsigned int dpte_bytes_per_row_ub_l;
        unsigned int dpte_groups_per_row_ub_l;
        unsigned int meta_pte_bytes_per_frame_ub_l;
        unsigned int meta_bytes_per_row_ub_l;
        unsigned int swath_height_c;
        unsigned int swath_width_ub_c;
        unsigned int dpte_bytes_per_row_ub_c;
        unsigned int dpte_groups_per_row_ub_c;
        unsigned int meta_chunks_per_row_ub_l;
        unsigned int vupdate_offset;
        unsigned int vupdate_width;
        unsigned int vready_offset;
        unsigned int dppclk_delay_subtotal;
        unsigned int dispclk_delay_subtotal;
        unsigned int pixel_rate_delay_subtotal;
        unsigned int vstartup_start;
        unsigned int dst_x_after_scaler;
        unsigned int dst_y_after_scaler;
        double line_wait;
        double line_o;
        double line_setup;
        double line_calc;
        double dst_y_prefetch;
        double t_pre_us;
        unsigned int vm_bytes;
        unsigned int meta_row_bytes;
        unsigned int max_num_sw_l;
        unsigned int max_num_sw_c;
        unsigned int max_partial_sw_l;
        unsigned int max_partial_sw_c;
        double max_vinit_l;
        double max_vinit_c;
        unsigned int lsw_l;
        unsigned int lsw_c;
        unsigned int sw_bytes_ub_l;
        unsigned int sw_bytes_ub_c;
        unsigned int sw_bytes;
        unsigned int dpte_row_bytes;
        double prefetch_bw;
        double flip_bw;
        double t_vm_us;
        double t_r0_us;
        double dst_y_per_vm_vblank;
        double dst_y_per_row_vblank;
        double min_dst_y_per_vm_vblank;
        double min_dst_y_per_row_vblank;
        double lsw;
        double vratio_pre_l;
        double vratio_pre_c;
        unsigned int req_per_swath_ub_l;
        unsigned int req_per_swath_ub_c;
        unsigned int meta_row_height_l;
        unsigned int swath_width_pixels_ub_l;
        unsigned int swath_width_pixels_ub_c;
        unsigned int scaler_rec_in_width_l;
        unsigned int scaler_rec_in_width_c;
        unsigned int dpte_row_height_l;
        unsigned int dpte_row_height_c;
        double hscale_pixel_rate_l;
        double hscale_pixel_rate_c;
        double min_hratio_fact_l;
        double min_hratio_fact_c;
        double refcyc_per_line_delivery_pre_l;
        double refcyc_per_line_delivery_pre_c;
        double refcyc_per_line_delivery_l;
        double refcyc_per_line_delivery_c;
        double refcyc_per_req_delivery_pre_l;
        double refcyc_per_req_delivery_pre_c;
        double refcyc_per_req_delivery_l;
        double refcyc_per_req_delivery_c;
        double refcyc_per_req_delivery_pre_cur0;
        double refcyc_per_req_delivery_cur0;
        unsigned int full_recout_width;
        double hratios_cur0;
        unsigned int cur0_src_width;
        enum cursor_bpp cur0_bpp;
        unsigned int cur0_req_size;
        unsigned int cur0_req_width;
        double cur0_width_ub;
        double cur0_req_per_width;
        double hactive_cur0;

        memset(disp_dlg_regs, 0, sizeof(*disp_dlg_regs));
        memset(disp_ttu_regs, 0, sizeof(*disp_ttu_regs));

        DTRACE("DLG: %s: cstate_en = %d", __func__, cstate_en);
        DTRACE("DLG: %s: pstate_en = %d", __func__, pstate_en);
        DTRACE("DLG: %s: vm_en     = %d", __func__, vm_en);
        DTRACE("DLG: %s: iflip_en  = %d", __func__, iflip_en);

        /* ------------------------- */
        /* Section 1.5.2.1: OTG dependent Params */
        /* ------------------------- */
        DTRACE("DLG: %s: dppclk_freq_in_mhz     = %3.2f", __func__, dppclk_freq_in_mhz);
        DTRACE("DLG: %s: dispclk_freq_in_mhz    = %3.2f", __func__, dispclk_freq_in_mhz);
        DTRACE("DLG: %s: refclk_freq_in_mhz     = %3.2f", __func__, refclk_freq_in_mhz);
        DTRACE("DLG: %s: pclk_freq_in_mhz       = %3.2f", __func__, pclk_freq_in_mhz);
        DTRACE("DLG: %s: interlaced             = %d", __func__, interlaced);

        ref_freq_to_pix_freq = refclk_freq_in_mhz / pclk_freq_in_mhz;
        ASSERT(ref_freq_to_pix_freq < 4.0);
        disp_dlg_regs->ref_freq_to_pix_freq =
                        (unsigned int) (ref_freq_to_pix_freq * dml_pow(2, 19));
        disp_dlg_regs->refcyc_per_htotal = (unsigned int) (ref_freq_to_pix_freq * (double) htotal
                        * dml_pow(2, 8));
        disp_dlg_regs->refcyc_h_blank_end = (unsigned int) ((double) hblank_end
                        * (double) ref_freq_to_pix_freq);
        ASSERT(disp_dlg_regs->refcyc_h_blank_end < (unsigned int) dml_pow(2, 13));
        disp_dlg_regs->dlg_vblank_end = interlaced ? (vblank_end / 2) : vblank_end; /* 15 bits */

        prefetch_xy_calc_in_dcfclk = 24.0; /* FIXME: ip_param */
        min_dcfclk_mhz = dlg_sys_param.deepsleep_dcfclk_mhz;
        t_calc_us = prefetch_xy_calc_in_dcfclk / min_dcfclk_mhz;
        min_ttu_vblank = dlg_sys_param.t_urg_wm_us;
        if (cstate_en)
                min_ttu_vblank = dml_max(dlg_sys_param.t_sr_wm_us, min_ttu_vblank);
        if (pstate_en)
                min_ttu_vblank = dml_max(dlg_sys_param.t_mclk_wm_us, min_ttu_vblank);
        min_ttu_vblank = min_ttu_vblank + t_calc_us;

        min_dst_y_ttu_vblank = min_ttu_vblank * pclk_freq_in_mhz / (double) htotal;
        dlg_vblank_start = interlaced ? (vblank_start / 2) : vblank_start;

        disp_dlg_regs->min_dst_y_next_start = (unsigned int) (((double) dlg_vblank_start
                        + min_dst_y_ttu_vblank) * dml_pow(2, 2));
        ASSERT(disp_dlg_regs->min_dst_y_next_start < (unsigned int) dml_pow(2, 18));

        DTRACE("DLG: %s: min_dcfclk_mhz                         = %3.2f", __func__, min_dcfclk_mhz);
        DTRACE("DLG: %s: min_ttu_vblank                         = %3.2f", __func__, min_ttu_vblank);
        DTRACE(
                        "DLG: %s: min_dst_y_ttu_vblank                   = %3.2f",
                        __func__,
                        min_dst_y_ttu_vblank);
        DTRACE("DLG: %s: t_calc_us                              = %3.2f", __func__, t_calc_us);
        DTRACE(
                        "DLG: %s: disp_dlg_regs->min_dst_y_next_start    = 0x%0x",
                        __func__,
                        disp_dlg_regs->min_dst_y_next_start);
        DTRACE(
                        "DLG: %s: ref_freq_to_pix_freq                   = %3.2f",
                        __func__,
                        ref_freq_to_pix_freq);

        /* ------------------------- */
        /* Section 1.5.2.2: Prefetch, Active and TTU  */
        /* ------------------------- */
        /* Prefetch Calc */
        /* Source */
        dcc_en = e2e_pipe_param.pipe.src.dcc;
        dual_plane = is_dual_plane(
                        (enum source_format_class) e2e_pipe_param.pipe.src.source_format);
        mode_422 = 0; /* FIXME */
        access_dir = (e2e_pipe_param.pipe.src.source_scan == dm_vert); /* vp access direction: horizontal or vertical accessed */
        bytes_per_element_l = get_bytes_per_element(
                        (enum source_format_class) e2e_pipe_param.pipe.src.source_format,
                        0);
        bytes_per_element_c = get_bytes_per_element(
                        (enum source_format_class) e2e_pipe_param.pipe.src.source_format,
                        1);
        vp_height_l = e2e_pipe_param.pipe.src.viewport_height;
        vp_width_l = e2e_pipe_param.pipe.src.viewport_width;
        vp_height_c = e2e_pipe_param.pipe.src.viewport_height_c;
        vp_width_c = e2e_pipe_param.pipe.src.viewport_width_c;

        /* Scaling */
        htaps_l = e2e_pipe_param.pipe.scale_taps.htaps;
        htaps_c = e2e_pipe_param.pipe.scale_taps.htaps_c;
        hratios_l = e2e_pipe_param.pipe.scale_ratio_depth.hscl_ratio;
        hratios_c = e2e_pipe_param.pipe.scale_ratio_depth.hscl_ratio_c;
        vratio_l = e2e_pipe_param.pipe.scale_ratio_depth.vscl_ratio;
        vratio_c = e2e_pipe_param.pipe.scale_ratio_depth.vscl_ratio_c;

        line_time_in_us = (htotal / pclk_freq_in_mhz);
        vinit_l = e2e_pipe_param.pipe.scale_ratio_depth.vinit;
        vinit_c = e2e_pipe_param.pipe.scale_ratio_depth.vinit_c;
        vinit_bot_l = e2e_pipe_param.pipe.scale_ratio_depth.vinit_bot;
        vinit_bot_c = e2e_pipe_param.pipe.scale_ratio_depth.vinit_bot_c;

        swath_height_l = rq_dlg_param.rq_l.swath_height;
        swath_width_ub_l = rq_dlg_param.rq_l.swath_width_ub;
        dpte_bytes_per_row_ub_l = rq_dlg_param.rq_l.dpte_bytes_per_row_ub;
        dpte_groups_per_row_ub_l = rq_dlg_param.rq_l.dpte_groups_per_row_ub;
        meta_pte_bytes_per_frame_ub_l = rq_dlg_param.rq_l.meta_pte_bytes_per_frame_ub;
        meta_bytes_per_row_ub_l = rq_dlg_param.rq_l.meta_bytes_per_row_ub;

        swath_height_c = rq_dlg_param.rq_c.swath_height;
        swath_width_ub_c = rq_dlg_param.rq_c.swath_width_ub;
        dpte_bytes_per_row_ub_c = rq_dlg_param.rq_c.dpte_bytes_per_row_ub;
        dpte_groups_per_row_ub_c = rq_dlg_param.rq_c.dpte_groups_per_row_ub;

        meta_chunks_per_row_ub_l = rq_dlg_param.rq_l.meta_chunks_per_row_ub;
        vupdate_offset = e2e_pipe_param.pipe.dest.vupdate_offset;
        vupdate_width = e2e_pipe_param.pipe.dest.vupdate_width;
        vready_offset = e2e_pipe_param.pipe.dest.vready_offset;

        dppclk_delay_subtotal = mode_lib->ip.dppclk_delay_subtotal;
        dispclk_delay_subtotal = mode_lib->ip.dispclk_delay_subtotal;
        pixel_rate_delay_subtotal = dppclk_delay_subtotal * pclk_freq_in_mhz / dppclk_freq_in_mhz
                        + dispclk_delay_subtotal * pclk_freq_in_mhz / dispclk_freq_in_mhz;

        vstartup_start = e2e_pipe_param.pipe.dest.vstartup_start;

        if (interlaced)
                vstartup_start = vstartup_start / 2;

        if (vstartup_start >= min_vblank) {
                DTRACE(
                                "WARNING_DLG: %s:  vblank_start=%d vblank_end=%d",
                                __func__,
                                vblank_start,
                                vblank_end);
                DTRACE(
                                "WARNING_DLG: %s:  vstartup_start=%d should be less than min_vblank=%d",
                                __func__,
                                vstartup_start,
                                min_vblank);
                min_vblank = vstartup_start + 1;
                DTRACE(
                                "WARNING_DLG: %s:  vstartup_start=%d should be less than min_vblank=%d",
                                __func__,
                                vstartup_start,
                                min_vblank);
        }

        dst_x_after_scaler = 0;
        dst_y_after_scaler = 0;

        if (e2e_pipe_param.pipe.src.is_hsplit)
                dst_x_after_scaler = pixel_rate_delay_subtotal
                                + e2e_pipe_param.pipe.dest.recout_width;
        else
                dst_x_after_scaler = pixel_rate_delay_subtotal;

        if (e2e_pipe_param.dout.output_format == dm_420)
                dst_y_after_scaler = 1;
        else
                dst_y_after_scaler = 0;

        if (dst_x_after_scaler >= htotal) {
                dst_x_after_scaler = dst_x_after_scaler - htotal;
                dst_y_after_scaler = dst_y_after_scaler + 1;
        }

        DTRACE("DLG: %s: htotal                                 = %d", __func__, htotal);
        DTRACE(
                        "DLG: %s: pixel_rate_delay_subtotal              = %d",
                        __func__,
                        pixel_rate_delay_subtotal);
        DTRACE("DLG: %s: dst_x_after_scaler                     = %d", __func__, dst_x_after_scaler);
        DTRACE("DLG: %s: dst_y_after_scaler                     = %d", __func__, dst_y_after_scaler);

        line_wait = mode_lib->soc.urgent_latency_us;
        if (cstate_en)
                line_wait = dml_max(mode_lib->soc.sr_enter_plus_exit_time_us, line_wait);
        if (pstate_en)
                line_wait = dml_max(
                                mode_lib->soc.dram_clock_change_latency_us
                                                + mode_lib->soc.urgent_latency_us,
                                line_wait);
        line_wait = line_wait / line_time_in_us;

        line_o = (double) dst_y_after_scaler + dst_x_after_scaler / (double) htotal;
        line_setup = (double) (vupdate_offset + vupdate_width + vready_offset) / (double) htotal;
        line_calc = t_calc_us / line_time_in_us;

        DTRACE(
                        "DLG: %s: soc.sr_enter_plus_exit_time_us     = %3.2f",
                        __func__,
                        (double) mode_lib->soc.sr_enter_plus_exit_time_us);
        DTRACE(
                        "DLG: %s: soc.dram_clock_change_latency_us   = %3.2f",
                        __func__,
                        (double) mode_lib->soc.dram_clock_change_latency_us);
        DTRACE(
                        "DLG: %s: soc.urgent_latency_us              = %3.2f",
                        __func__,
                        mode_lib->soc.urgent_latency_us);

        DTRACE("DLG: %s: swath_height_l     = %d", __func__, swath_height_l);
        if (dual_plane)
                DTRACE("DLG: %s: swath_height_c     = %d", __func__, swath_height_c);

        DTRACE(
                        "DLG: %s: t_srx_delay_us     = %3.2f",
                        __func__,
                        (double) dlg_sys_param.t_srx_delay_us);
        DTRACE("DLG: %s: line_time_in_us    = %3.2f", __func__, (double) line_time_in_us);
        DTRACE("DLG: %s: vupdate_offset     = %d", __func__, vupdate_offset);
        DTRACE("DLG: %s: vupdate_width      = %d", __func__, vupdate_width);
        DTRACE("DLG: %s: vready_offset      = %d", __func__, vready_offset);
        DTRACE("DLG: %s: line_time_in_us    = %3.2f", __func__, line_time_in_us);
        DTRACE("DLG: %s: line_wait          = %3.2f", __func__, line_wait);
        DTRACE("DLG: %s: line_o             = %3.2f", __func__, line_o);
        DTRACE("DLG: %s: line_setup         = %3.2f", __func__, line_setup);
        DTRACE("DLG: %s: line_calc          = %3.2f", __func__, line_calc);

        dst_y_prefetch = ((double) min_vblank - 1.0)
                        - (line_setup + line_calc + line_wait + line_o);
        DTRACE("DLG: %s: dst_y_prefetch (before rnd) = %3.2f", __func__, dst_y_prefetch);
        ASSERT(dst_y_prefetch >= 2.0);

        dst_y_prefetch = dml_floor(4.0 * (dst_y_prefetch + 0.125), 1) / 4;
        DTRACE("DLG: %s: dst_y_prefetch (after rnd) = %3.2f", __func__, dst_y_prefetch);

        t_pre_us = dst_y_prefetch * line_time_in_us;
        vm_bytes = 0;
        meta_row_bytes = 0;

        if (dcc_en && vm_en)
                vm_bytes = meta_pte_bytes_per_frame_ub_l;
        if (dcc_en)
                meta_row_bytes = meta_bytes_per_row_ub_l;

        max_num_sw_l = 0;
        max_num_sw_c = 0;
        max_partial_sw_l = 0;
        max_partial_sw_c = 0;

        max_vinit_l = interlaced ? dml_max(vinit_l, vinit_bot_l) : vinit_l;
        max_vinit_c = interlaced ? dml_max(vinit_c, vinit_bot_c) : vinit_c;

        get_swath_need(mode_lib, &max_num_sw_l, &max_partial_sw_l, swath_height_l, max_vinit_l);
        if (dual_plane)
                get_swath_need(
                                mode_lib,
                                &max_num_sw_c,
                                &max_partial_sw_c,
                                swath_height_c,
                                max_vinit_c);

        lsw_l = max_num_sw_l * swath_height_l + max_partial_sw_l;
        lsw_c = max_num_sw_c * swath_height_c + max_partial_sw_c;
        sw_bytes_ub_l = lsw_l * swath_width_ub_l * bytes_per_element_l;
        sw_bytes_ub_c = lsw_c * swath_width_ub_c * bytes_per_element_c;
        sw_bytes = 0;
        dpte_row_bytes = 0;

        if (vm_en) {
                if (dual_plane)
                        dpte_row_bytes = dpte_bytes_per_row_ub_l + dpte_bytes_per_row_ub_c;
                else
                        dpte_row_bytes = dpte_bytes_per_row_ub_l;
        } else {
                dpte_row_bytes = 0;
        }

        if (dual_plane)
                sw_bytes = sw_bytes_ub_l + sw_bytes_ub_c;
        else
                sw_bytes = sw_bytes_ub_l;

        DTRACE("DLG: %s: sw_bytes_ub_l           = %d", __func__, sw_bytes_ub_l);
        DTRACE("DLG: %s: sw_bytes_ub_c           = %d", __func__, sw_bytes_ub_c);
        DTRACE("DLG: %s: sw_bytes                = %d", __func__, sw_bytes);
        DTRACE("DLG: %s: vm_bytes                = %d", __func__, vm_bytes);
        DTRACE("DLG: %s: meta_row_bytes          = %d", __func__, meta_row_bytes);
        DTRACE("DLG: %s: dpte_row_bytes          = %d", __func__, dpte_row_bytes);

        prefetch_bw = (vm_bytes + 2 * dpte_row_bytes + 2 * meta_row_bytes + sw_bytes) / t_pre_us;
        flip_bw = ((vm_bytes + dpte_row_bytes + meta_row_bytes) * dlg_sys_param.total_flip_bw)
                        / (double) dlg_sys_param.total_flip_bytes;
        t_vm_us = line_time_in_us / 4.0;
        if (vm_en && dcc_en) {
                t_vm_us = dml_max(
                                dlg_sys_param.t_extra_us,
                                dml_max((double) vm_bytes / prefetch_bw, t_vm_us));

                if (iflip_en && !dual_plane) {
                        t_vm_us = dml_max(mode_lib->soc.urgent_latency_us, t_vm_us);
                        if (flip_bw > 0.)
                                t_vm_us = dml_max(vm_bytes / flip_bw, t_vm_us);
                }
        }

        t_r0_us = dml_max(dlg_sys_param.t_extra_us - t_vm_us, line_time_in_us - t_vm_us);

        if (vm_en || dcc_en) {
                t_r0_us = dml_max(
                                (double) (dpte_row_bytes + meta_row_bytes) / prefetch_bw,
                                dlg_sys_param.t_extra_us);
                t_r0_us = dml_max((double) (line_time_in_us - t_vm_us), t_r0_us);

                if (iflip_en && !dual_plane) {
                        t_r0_us = dml_max(mode_lib->soc.urgent_latency_us * 2.0, t_r0_us);
                        if (flip_bw > 0.)
                                t_r0_us = dml_max(
                                                (dpte_row_bytes + meta_row_bytes) / flip_bw,
                                                t_r0_us);
                }
        }

        disp_dlg_regs->dst_y_after_scaler = dst_y_after_scaler; /* in terms of line */
        disp_dlg_regs->refcyc_x_after_scaler = dst_x_after_scaler * ref_freq_to_pix_freq; /* in terms of refclk */
        ASSERT(disp_dlg_regs->refcyc_x_after_scaler < (unsigned int) dml_pow(2, 13));
        DTRACE(
                        "DLG: %s: disp_dlg_regs->dst_y_after_scaler      = 0x%0x",
                        __func__,
                        disp_dlg_regs->dst_y_after_scaler);
        DTRACE(
                        "DLG: %s: disp_dlg_regs->refcyc_x_after_scaler   = 0x%0x",
                        __func__,
                        disp_dlg_regs->refcyc_x_after_scaler);

        disp_dlg_regs->dst_y_prefetch = (unsigned int) (dst_y_prefetch * dml_pow(2, 2));
        DTRACE(
                        "DLG: %s: disp_dlg_regs->dst_y_prefetch  = %d",
                        __func__,
                        disp_dlg_regs->dst_y_prefetch);

        dst_y_per_vm_vblank = 0.0;
        dst_y_per_row_vblank = 0.0;

        dst_y_per_vm_vblank = t_vm_us / line_time_in_us;
        dst_y_per_vm_vblank = dml_floor(4.0 * (dst_y_per_vm_vblank + 0.125), 1) / 4.0;
        disp_dlg_regs->dst_y_per_vm_vblank = (unsigned int) (dst_y_per_vm_vblank * dml_pow(2, 2));

        dst_y_per_row_vblank = t_r0_us / line_time_in_us;
        dst_y_per_row_vblank = dml_floor(4.0 * (dst_y_per_row_vblank + 0.125), 1) / 4.0;
        disp_dlg_regs->dst_y_per_row_vblank = (unsigned int) (dst_y_per_row_vblank * dml_pow(2, 2));

        DTRACE("DLG: %s: lsw_l                   = %d", __func__, lsw_l);
        DTRACE("DLG: %s: lsw_c                   = %d", __func__, lsw_c);
        DTRACE("DLG: %s: dpte_bytes_per_row_ub_l = %d", __func__, dpte_bytes_per_row_ub_l);
        DTRACE("DLG: %s: dpte_bytes_per_row_ub_c = %d", __func__, dpte_bytes_per_row_ub_c);

        DTRACE("DLG: %s: prefetch_bw            = %3.2f", __func__, prefetch_bw);
        DTRACE("DLG: %s: flip_bw                = %3.2f", __func__, flip_bw);
        DTRACE("DLG: %s: t_pre_us               = %3.2f", __func__, t_pre_us);
        DTRACE("DLG: %s: t_vm_us                = %3.2f", __func__, t_vm_us);
        DTRACE("DLG: %s: t_r0_us                = %3.2f", __func__, t_r0_us);
        DTRACE("DLG: %s: dst_y_per_vm_vblank    = %3.2f", __func__, dst_y_per_vm_vblank);
        DTRACE("DLG: %s: dst_y_per_row_vblank   = %3.2f", __func__, dst_y_per_row_vblank);
        DTRACE("DLG: %s: dst_y_prefetch         = %3.2f", __func__, dst_y_prefetch);

        min_dst_y_per_vm_vblank = 8.0;
        min_dst_y_per_row_vblank = 16.0;
        if (htotal <= 75) {
                min_vblank = 300;
                min_dst_y_per_vm_vblank = 100.0;
                min_dst_y_per_row_vblank = 100.0;
        }

        ASSERT(dst_y_per_vm_vblank < min_dst_y_per_vm_vblank);
        ASSERT(dst_y_per_row_vblank < min_dst_y_per_row_vblank);

        ASSERT(dst_y_prefetch > (dst_y_per_vm_vblank + dst_y_per_row_vblank));
        lsw = dst_y_prefetch - (dst_y_per_vm_vblank + dst_y_per_row_vblank);

        DTRACE("DLG: %s: lsw = %3.2f", __func__, lsw);

        vratio_pre_l = get_vratio_pre(
                        mode_lib,
                        max_num_sw_l,
                        max_partial_sw_l,
                        swath_height_l,
                        max_vinit_l,
                        lsw);
        vratio_pre_c = 1.0;
        if (dual_plane)
                vratio_pre_c = get_vratio_pre(
                                mode_lib,
                                max_num_sw_c,
                                max_partial_sw_c,
                                swath_height_c,
                                max_vinit_c,
                                lsw);

        DTRACE("DLG: %s: vratio_pre_l=%3.2f", __func__, vratio_pre_l);
        DTRACE("DLG: %s: vratio_pre_c=%3.2f", __func__, vratio_pre_c);

        ASSERT(vratio_pre_l <= 4.0);
        if (vratio_pre_l >= 4.0)
                disp_dlg_regs->vratio_prefetch = (unsigned int) dml_pow(2, 21) - 1;
        else
                disp_dlg_regs->vratio_prefetch = (unsigned int) (vratio_pre_l * dml_pow(2, 19));

        ASSERT(vratio_pre_c <= 4.0);
        if (vratio_pre_c >= 4.0)
                disp_dlg_regs->vratio_prefetch_c = (unsigned int) dml_pow(2, 21) - 1;
        else
                disp_dlg_regs->vratio_prefetch_c = (unsigned int) (vratio_pre_c * dml_pow(2, 19));

        disp_dlg_regs->refcyc_per_pte_group_vblank_l =
                        (unsigned int) (dst_y_per_row_vblank * (double) htotal
                                        * ref_freq_to_pix_freq / (double) dpte_groups_per_row_ub_l);
        ASSERT(disp_dlg_regs->refcyc_per_pte_group_vblank_l < (unsigned int) dml_pow(2, 13));

        disp_dlg_regs->refcyc_per_pte_group_vblank_c =
                        (unsigned int) (dst_y_per_row_vblank * (double) htotal
                                        * ref_freq_to_pix_freq / (double) dpte_groups_per_row_ub_c);
        ASSERT(disp_dlg_regs->refcyc_per_pte_group_vblank_c < (unsigned int) dml_pow(2, 13));

        disp_dlg_regs->refcyc_per_meta_chunk_vblank_l =
                        (unsigned int) (dst_y_per_row_vblank * (double) htotal
                                        * ref_freq_to_pix_freq / (double) meta_chunks_per_row_ub_l);
        ASSERT(disp_dlg_regs->refcyc_per_meta_chunk_vblank_l < (unsigned int) dml_pow(2, 13));

        disp_dlg_regs->refcyc_per_meta_chunk_vblank_c =
                        disp_dlg_regs->refcyc_per_meta_chunk_vblank_l;/* dcc for 4:2:0 is not supported in dcn1.0.  assigned to be the same as _l for now */

        /* Active */
        req_per_swath_ub_l = rq_dlg_param.rq_l.req_per_swath_ub;
        req_per_swath_ub_c = rq_dlg_param.rq_c.req_per_swath_ub;
        meta_row_height_l = rq_dlg_param.rq_l.meta_row_height;
        swath_width_pixels_ub_l = 0;
        swath_width_pixels_ub_c = 0;
        scaler_rec_in_width_l = 0;
        scaler_rec_in_width_c = 0;
        dpte_row_height_l = rq_dlg_param.rq_l.dpte_row_height;
        dpte_row_height_c = rq_dlg_param.rq_c.dpte_row_height;

        disp_dlg_regs->dst_y_per_pte_row_nom_l = (unsigned int) ((double) dpte_row_height_l
                        / (double) vratio_l * dml_pow(2, 2));
        ASSERT(disp_dlg_regs->dst_y_per_pte_row_nom_l < (unsigned int) dml_pow(2, 17));

        disp_dlg_regs->dst_y_per_pte_row_nom_c = (unsigned int) ((double) dpte_row_height_c
                        / (double) vratio_c * dml_pow(2, 2));
        ASSERT(disp_dlg_regs->dst_y_per_pte_row_nom_c < (unsigned int) dml_pow(2, 17));

        disp_dlg_regs->dst_y_per_meta_row_nom_l = (unsigned int) ((double) meta_row_height_l
                        / (double) vratio_l * dml_pow(2, 2));
        ASSERT(disp_dlg_regs->dst_y_per_meta_row_nom_l < (unsigned int) dml_pow(2, 17));

        disp_dlg_regs->dst_y_per_meta_row_nom_c = disp_dlg_regs->dst_y_per_meta_row_nom_l; /* dcc for 4:2:0 is not supported in dcn1.0.  assigned to be the same as _l for now */

        disp_dlg_regs->refcyc_per_pte_group_nom_l = (unsigned int) ((double) dpte_row_height_l
                        / (double) vratio_l * (double) htotal * ref_freq_to_pix_freq
                        / (double) dpte_groups_per_row_ub_l);
        if (disp_dlg_regs->refcyc_per_pte_group_nom_l >= (unsigned int) dml_pow(2, 23))
                disp_dlg_regs->refcyc_per_pte_group_nom_l = dml_pow(2, 23) - 1;

        disp_dlg_regs->refcyc_per_pte_group_nom_c = (unsigned int) ((double) dpte_row_height_c
                        / (double) vratio_c * (double) htotal * ref_freq_to_pix_freq
                        / (double) dpte_groups_per_row_ub_c);
        if (disp_dlg_regs->refcyc_per_pte_group_nom_c >= (unsigned int) dml_pow(2, 23))
                disp_dlg_regs->refcyc_per_pte_group_nom_c = dml_pow(2, 23) - 1;

        disp_dlg_regs->refcyc_per_meta_chunk_nom_l = (unsigned int) ((double) meta_row_height_l
                        / (double) vratio_l * (double) htotal * ref_freq_to_pix_freq
                        / (double) meta_chunks_per_row_ub_l);
        if (disp_dlg_regs->refcyc_per_meta_chunk_nom_l >= (unsigned int) dml_pow(2, 23))
                disp_dlg_regs->refcyc_per_meta_chunk_nom_l = dml_pow(2, 23) - 1;

        if (mode_422) {
                swath_width_pixels_ub_l = swath_width_ub_l * 2; /* *2 for 2 pixel per element */
                swath_width_pixels_ub_c = swath_width_ub_c * 2;
        } else {
                swath_width_pixels_ub_l = swath_width_ub_l * 1;
                swath_width_pixels_ub_c = swath_width_ub_c * 1;
        }

        hscale_pixel_rate_l = 0.;
        hscale_pixel_rate_c = 0.;
        min_hratio_fact_l = 1.0;
        min_hratio_fact_c = 1.0;

        if (htaps_l <= 1)
                min_hratio_fact_l = 2.0;
        else if (htaps_l <= 6) {
                if ((hratios_l * 2.0) > 4.0)
                        min_hratio_fact_l = 4.0;
                else
                        min_hratio_fact_l = hratios_l * 2.0;
        } else {
                if (hratios_l > 4.0)
                        min_hratio_fact_l = 4.0;
                else
                        min_hratio_fact_l = hratios_l;
        }

        hscale_pixel_rate_l = min_hratio_fact_l * dppclk_freq_in_mhz;

        if (htaps_c <= 1)
                min_hratio_fact_c = 2.0;
        else if (htaps_c <= 6) {
                if ((hratios_c * 2.0) > 4.0)
                        min_hratio_fact_c = 4.0;
                else
                        min_hratio_fact_c = hratios_c * 2.0;
        } else {
                if (hratios_c > 4.0)
                        min_hratio_fact_c = 4.0;
                else
                        min_hratio_fact_c = hratios_c;
        }

        hscale_pixel_rate_c = min_hratio_fact_c * dppclk_freq_in_mhz;

        refcyc_per_line_delivery_pre_l = 0.;
        refcyc_per_line_delivery_pre_c = 0.;
        refcyc_per_line_delivery_l = 0.;
        refcyc_per_line_delivery_c = 0.;

        refcyc_per_req_delivery_pre_l = 0.;
        refcyc_per_req_delivery_pre_c = 0.;
        refcyc_per_req_delivery_l = 0.;
        refcyc_per_req_delivery_c = 0.;
        refcyc_per_req_delivery_pre_cur0 = 0.;
        refcyc_per_req_delivery_cur0 = 0.;

        full_recout_width = 0;
        if (e2e_pipe_param.pipe.src.is_hsplit) {
                if (e2e_pipe_param.pipe.dest.full_recout_width == 0) {
                        DTRACE("DLG: %s: Warningfull_recout_width not set in hsplit mode", __func__);
                        full_recout_width = e2e_pipe_param.pipe.dest.recout_width * 2; /* assume half split for dcn1 */
                } else
                        full_recout_width = e2e_pipe_param.pipe.dest.full_recout_width;
        } else
                full_recout_width = e2e_pipe_param.pipe.dest.recout_width;

        refcyc_per_line_delivery_pre_l = get_refcyc_per_delivery(
                        mode_lib,
                        refclk_freq_in_mhz,
                        pclk_freq_in_mhz,
                        full_recout_width,
                        vratio_pre_l,
                        hscale_pixel_rate_l,
                        swath_width_pixels_ub_l,
                        1); /* per line */

        refcyc_per_line_delivery_l = get_refcyc_per_delivery(
                        mode_lib,
                        refclk_freq_in_mhz,
                        pclk_freq_in_mhz,
                        full_recout_width,
                        vratio_l,
                        hscale_pixel_rate_l,
                        swath_width_pixels_ub_l,
                        1); /* per line */

        DTRACE("DLG: %s: full_recout_width              = %d", __func__, full_recout_width);
        DTRACE("DLG: %s: hscale_pixel_rate_l            = %3.2f", __func__, hscale_pixel_rate_l);
        DTRACE(
                        "DLG: %s: refcyc_per_line_delivery_pre_l = %3.2f",
                        __func__,
                        refcyc_per_line_delivery_pre_l);
        DTRACE(
                        "DLG: %s: refcyc_per_line_delivery_l     = %3.2f",
                        __func__,
                        refcyc_per_line_delivery_l);

        disp_dlg_regs->refcyc_per_line_delivery_pre_l = (unsigned int) dml_floor(
                        refcyc_per_line_delivery_pre_l,
                        1);
        disp_dlg_regs->refcyc_per_line_delivery_l = (unsigned int) dml_floor(
                        refcyc_per_line_delivery_l,
                        1);
        ASSERT(disp_dlg_regs->refcyc_per_line_delivery_pre_l < (unsigned int) dml_pow(2, 13));
        ASSERT(disp_dlg_regs->refcyc_per_line_delivery_l < (unsigned int) dml_pow(2, 13));

        if (dual_plane) {
                refcyc_per_line_delivery_pre_c = get_refcyc_per_delivery(
                                mode_lib,
                                refclk_freq_in_mhz,
                                pclk_freq_in_mhz,
                                full_recout_width,
                                vratio_pre_c,
                                hscale_pixel_rate_c,
                                swath_width_pixels_ub_c,
                                1); /* per line */

                refcyc_per_line_delivery_c = get_refcyc_per_delivery(
                                mode_lib,
                                refclk_freq_in_mhz,
                                pclk_freq_in_mhz,
                                full_recout_width,
                                vratio_c,
                                hscale_pixel_rate_c,
                                swath_width_pixels_ub_c,
                                1); /* per line */

                DTRACE(
                                "DLG: %s: refcyc_per_line_delivery_pre_c = %3.2f",
                                __func__,
                                refcyc_per_line_delivery_pre_c);
                DTRACE(
                                "DLG: %s: refcyc_per_line_delivery_c     = %3.2f",
                                __func__,
                                refcyc_per_line_delivery_c);

                disp_dlg_regs->refcyc_per_line_delivery_pre_c = (unsigned int) dml_floor(
                                refcyc_per_line_delivery_pre_c,
                                1);
                disp_dlg_regs->refcyc_per_line_delivery_c = (unsigned int) dml_floor(
                                refcyc_per_line_delivery_c,
                                1);
                ASSERT(disp_dlg_regs->refcyc_per_line_delivery_pre_c < (unsigned int) dml_pow(2, 13));
                ASSERT(disp_dlg_regs->refcyc_per_line_delivery_c < (unsigned int) dml_pow(2, 13));
        }
        disp_dlg_regs->chunk_hdl_adjust_cur0 = 3;

        /* TTU - Luma / Chroma */
        if (access_dir) { /* vertical access */
                scaler_rec_in_width_l = vp_height_l;
                scaler_rec_in_width_c = vp_height_c;
        } else {
                scaler_rec_in_width_l = vp_width_l;
                scaler_rec_in_width_c = vp_width_c;
        }

        refcyc_per_req_delivery_pre_l = get_refcyc_per_delivery(
                        mode_lib,
                        refclk_freq_in_mhz,
                        pclk_freq_in_mhz,
                        full_recout_width,
                        vratio_pre_l,
                        hscale_pixel_rate_l,
                        scaler_rec_in_width_l,
                        req_per_swath_ub_l); /* per req */
        refcyc_per_req_delivery_l = get_refcyc_per_delivery(
                        mode_lib,
                        refclk_freq_in_mhz,
                        pclk_freq_in_mhz,
                        full_recout_width,
                        vratio_l,
                        hscale_pixel_rate_l,
                        scaler_rec_in_width_l,
                        req_per_swath_ub_l); /* per req */

        DTRACE(
                        "DLG: %s: refcyc_per_req_delivery_pre_l = %3.2f",
                        __func__,
                        refcyc_per_req_delivery_pre_l);
        DTRACE(
                        "DLG: %s: refcyc_per_req_delivery_l     = %3.2f",
                        __func__,
                        refcyc_per_req_delivery_l);

        disp_ttu_regs->refcyc_per_req_delivery_pre_l = (unsigned int) (refcyc_per_req_delivery_pre_l
                        * dml_pow(2, 10));
        disp_ttu_regs->refcyc_per_req_delivery_l = (unsigned int) (refcyc_per_req_delivery_l
                        * dml_pow(2, 10));

        ASSERT(refcyc_per_req_delivery_pre_l < dml_pow(2, 13));
        ASSERT(refcyc_per_req_delivery_l < dml_pow(2, 13));

        if (dual_plane) {
                refcyc_per_req_delivery_pre_c = get_refcyc_per_delivery(
                                mode_lib,
                                refclk_freq_in_mhz,
                                pclk_freq_in_mhz,
                                full_recout_width,
                                vratio_pre_c,
                                hscale_pixel_rate_c,
                                scaler_rec_in_width_c,
                                req_per_swath_ub_c); /* per req  */
                refcyc_per_req_delivery_c = get_refcyc_per_delivery(
                                mode_lib,
                                refclk_freq_in_mhz,
                                pclk_freq_in_mhz,
                                full_recout_width,
                                vratio_c,
                                hscale_pixel_rate_c,
                                scaler_rec_in_width_c,
                                req_per_swath_ub_c); /* per req */

                DTRACE(
                                "DLG: %s: refcyc_per_req_delivery_pre_c = %3.2f",
                                __func__,
                                refcyc_per_req_delivery_pre_c);
                DTRACE(
                                "DLG: %s: refcyc_per_req_delivery_c     = %3.2f",
                                __func__,
                                refcyc_per_req_delivery_c);

                disp_ttu_regs->refcyc_per_req_delivery_pre_c =
                                (unsigned int) (refcyc_per_req_delivery_pre_c * dml_pow(2, 10));
                disp_ttu_regs->refcyc_per_req_delivery_c = (unsigned int) (refcyc_per_req_delivery_c
                                * dml_pow(2, 10));

                ASSERT(refcyc_per_req_delivery_pre_c < dml_pow(2, 13));
                ASSERT(refcyc_per_req_delivery_c < dml_pow(2, 13));
        }

        /* TTU - Cursor */
        hratios_cur0 = e2e_pipe_param.pipe.scale_ratio_depth.hscl_ratio;
        cur0_src_width = e2e_pipe_param.pipe.src.cur0_src_width; /* cursor source width */
        cur0_bpp = (enum cursor_bpp) e2e_pipe_param.pipe.src.cur0_bpp;
        cur0_req_size = 0;
        cur0_req_width = 0;
        cur0_width_ub = 0.0;
        cur0_req_per_width = 0.0;
        hactive_cur0 = 0.0;

        ASSERT(cur0_src_width <= 256);

        if (cur0_src_width > 0) {
                unsigned int cur0_bit_per_pixel = 0;

                if (cur0_bpp == dm_cur_2bit) {
                        cur0_req_size = 64; /* byte */
                        cur0_bit_per_pixel = 2;
                } else { /* 32bit */
                        cur0_bit_per_pixel = 32;
                        if (cur0_src_width >= 1 && cur0_src_width <= 16)
                                cur0_req_size = 64;
                        else if (cur0_src_width >= 17 && cur0_src_width <= 31)
                                cur0_req_size = 128;
                        else
                                cur0_req_size = 256;
                }

                cur0_req_width = (double) cur0_req_size / ((double) cur0_bit_per_pixel / 8.0);
                cur0_width_ub = dml_ceil((double) cur0_src_width / (double) cur0_req_width, 1)
                                * (double) cur0_req_width;
                cur0_req_per_width = cur0_width_ub / (double) cur0_req_width;
                hactive_cur0 = (double) cur0_src_width / hratios_cur0; /* FIXME: oswin to think about what to do for cursor */

                if (vratio_pre_l <= 1.0) {
                        refcyc_per_req_delivery_pre_cur0 = hactive_cur0 * ref_freq_to_pix_freq
                                        / (double) cur0_req_per_width;
                } else {
                        refcyc_per_req_delivery_pre_cur0 = (double) refclk_freq_in_mhz
                                        * (double) cur0_src_width / hscale_pixel_rate_l
                                        / (double) cur0_req_per_width;
                }

                disp_ttu_regs->refcyc_per_req_delivery_pre_cur0 =
                                (unsigned int) (refcyc_per_req_delivery_pre_cur0 * dml_pow(2, 10));
                ASSERT(refcyc_per_req_delivery_pre_cur0 < dml_pow(2, 13));

                if (vratio_l <= 1.0) {
                        refcyc_per_req_delivery_cur0 = hactive_cur0 * ref_freq_to_pix_freq
                                        / (double) cur0_req_per_width;
                } else {
                        refcyc_per_req_delivery_cur0 = (double) refclk_freq_in_mhz
                                        * (double) cur0_src_width / hscale_pixel_rate_l
                                        / (double) cur0_req_per_width;
                }

                DTRACE("DLG: %s: cur0_req_width                     = %d", __func__, cur0_req_width);
                DTRACE(
                                "DLG: %s: cur0_width_ub                      = %3.2f",
                                __func__,
                                cur0_width_ub);
                DTRACE(
                                "DLG: %s: cur0_req_per_width                 = %3.2f",
                                __func__,
                                cur0_req_per_width);
                DTRACE(
                                "DLG: %s: hactive_cur0                       = %3.2f",
                                __func__,
                                hactive_cur0);
                DTRACE(
                                "DLG: %s: refcyc_per_req_delivery_pre_cur0   = %3.2f",
                                __func__,
                                refcyc_per_req_delivery_pre_cur0);
                DTRACE(
                                "DLG: %s: refcyc_per_req_delivery_cur0       = %3.2f",
                                __func__,
                                refcyc_per_req_delivery_cur0);

                disp_ttu_regs->refcyc_per_req_delivery_cur0 =
                                (unsigned int) (refcyc_per_req_delivery_cur0 * dml_pow(2, 10));
                ASSERT(refcyc_per_req_delivery_cur0 < dml_pow(2, 13));
        } else {
                disp_ttu_regs->refcyc_per_req_delivery_pre_cur0 = 0;
                disp_ttu_regs->refcyc_per_req_delivery_cur0 = 0;
        }

        /* TTU - Misc */
        disp_ttu_regs->qos_level_low_wm = 0;
        ASSERT(disp_ttu_regs->qos_level_low_wm < dml_pow(2, 14));
        disp_ttu_regs->qos_level_high_wm = (unsigned int) (4.0 * (double) htotal
                        * ref_freq_to_pix_freq);
        ASSERT(disp_ttu_regs->qos_level_high_wm < dml_pow(2, 14));

        disp_ttu_regs->qos_level_flip = 14;
        disp_ttu_regs->qos_level_fixed_l = 8;
        disp_ttu_regs->qos_level_fixed_c = 8;
        disp_ttu_regs->qos_level_fixed_cur0 = 8;
        disp_ttu_regs->qos_ramp_disable_l = 0;
        disp_ttu_regs->qos_ramp_disable_c = 0;
        disp_ttu_regs->qos_ramp_disable_cur0 = 0;

        disp_ttu_regs->min_ttu_vblank = min_ttu_vblank * refclk_freq_in_mhz;
        ASSERT(disp_ttu_regs->min_ttu_vblank < dml_pow(2, 24));

        print__ttu_regs_st(mode_lib, *disp_ttu_regs);
        print__dlg_regs_st(mode_lib, *disp_dlg_regs);
}