// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 Intel Corporation

#include <linux/device.h>

#include "ipu3-css.h"
#include "ipu3-css-fw.h"
#include "ipu3-tables.h"
#include "ipu3-css-params.h"

#define DIV_ROUND_CLOSEST_DOWN(a, b)    (((a) + ((b) / 2) - 1) / (b))
#define roundclosest_down(a, b)         (DIV_ROUND_CLOSEST_DOWN(a, b) * (b))

#define IPU3_UAPI_ANR_MAX_RESET         ((1 << 12) - 1)
#define IPU3_UAPI_ANR_MIN_RESET         (((-1) << 12) + 1)

struct imgu_css_scaler_info {
        unsigned int phase_step;        /* Same for luma/chroma */
        int exp_shift;

        unsigned int phase_init;        /* luma/chroma dependent */
        int pad_left;
        int pad_right;
        int crop_left;
        int crop_top;
};

static unsigned int imgu_css_scaler_get_exp(unsigned int counter,
                                            unsigned int divider)
{
        int i = fls(divider) - fls(counter);

        if (i <= 0)
                return 0;

        if (divider >> i < counter)
                i = i - 1;

        return i;
}

/* Set up the CSS scaler look up table */
static void
imgu_css_scaler_setup_lut(unsigned int taps, unsigned int input_width,
                          unsigned int output_width, int phase_step_correction,
                          const int *coeffs, unsigned int coeffs_size,
                          s8 coeff_lut[], struct imgu_css_scaler_info *info)
{
        int tap, phase, phase_sum_left, phase_sum_right;
        int exponent = imgu_css_scaler_get_exp(output_width, input_width);
        int mantissa = (1 << exponent) * output_width;
        unsigned int phase_step, phase_taps;

        if (input_width == output_width) {
                for (phase = 0; phase < IMGU_SCALER_PHASES; phase++) {
                        phase_taps = phase * IMGU_SCALER_FILTER_TAPS;
                        for (tap = 0; tap < taps; tap++)
                                coeff_lut[phase_taps + tap] = 0;
                }

                info->phase_step = IMGU_SCALER_PHASES *
                        (1 << IMGU_SCALER_PHASE_COUNTER_PREC_REF);
                info->exp_shift = 0;
                info->pad_left = 0;
                info->pad_right = 0;
                info->phase_init = 0;
                info->crop_left = 0;
                info->crop_top = 0;
                return;
        }

        for (phase = 0; phase < IMGU_SCALER_PHASES; phase++) {
                phase_taps = phase * IMGU_SCALER_FILTER_TAPS;
                for (tap = 0; tap < taps; tap++) {
                        /* flip table to for convolution reverse indexing */
                        s64 coeff = coeffs[coeffs_size -
                                ((tap * (coeffs_size / taps)) + phase) - 1];
                        coeff *= mantissa;
                        coeff = div64_long(coeff, input_width);

                        /* Add +"0.5" */
                        coeff += 1 << (IMGU_SCALER_COEFF_BITS - 1);
                        coeff >>= IMGU_SCALER_COEFF_BITS;
                        coeff_lut[phase_taps + tap] = coeff;
                }
        }

        phase_step = IMGU_SCALER_PHASES *
                        (1 << IMGU_SCALER_PHASE_COUNTER_PREC_REF) *
                        output_width / input_width;
        phase_step += phase_step_correction;
        phase_sum_left = (taps / 2 * IMGU_SCALER_PHASES *
                        (1 << IMGU_SCALER_PHASE_COUNTER_PREC_REF)) -
                        (1 << (IMGU_SCALER_PHASE_COUNTER_PREC_REF - 1));
        phase_sum_right = (taps / 2 * IMGU_SCALER_PHASES *
                        (1 << IMGU_SCALER_PHASE_COUNTER_PREC_REF)) +
                        (1 << (IMGU_SCALER_PHASE_COUNTER_PREC_REF - 1));

        info->exp_shift = IMGU_SCALER_MAX_EXPONENT_SHIFT - exponent;
        info->pad_left = (phase_sum_left % phase_step == 0) ?
                phase_sum_left / phase_step - 1 : phase_sum_left / phase_step;
        info->pad_right = (phase_sum_right % phase_step == 0) ?
                phase_sum_right / phase_step - 1 : phase_sum_right / phase_step;
        info->phase_init = phase_sum_left - phase_step * info->pad_left;
        info->phase_step = phase_step;
        info->crop_left = taps - 1;
        info->crop_top = taps - 1;
}

/*
 * Calculates the exact output image width/height, based on phase_step setting
 * (must be perfectly aligned with hardware).
 */
static unsigned int
imgu_css_scaler_calc_scaled_output(unsigned int input,
                                   struct imgu_css_scaler_info *info)
{
        unsigned int arg1 = input * info->phase_step +
                        (1 - IMGU_SCALER_TAPS_Y / 2) * IMGU_SCALER_FIR_PHASES -
                        IMGU_SCALER_FIR_PHASES / (2 * IMGU_SCALER_PHASES);
        unsigned int arg2 = ((IMGU_SCALER_TAPS_Y / 2) * IMGU_SCALER_FIR_PHASES +
                        IMGU_SCALER_FIR_PHASES / (2 * IMGU_SCALER_PHASES)) *
                        IMGU_SCALER_FIR_PHASES + info->phase_step / 2;

        return ((arg1 + (arg2 - IMGU_SCALER_FIR_PHASES * info->phase_step) /
                IMGU_SCALER_FIR_PHASES) / (2 * IMGU_SCALER_FIR_PHASES)) * 2;
}

/*
 * Calculate the output width and height, given the luma
 * and chroma details of a scaler
 */
static void
imgu_css_scaler_calc(u32 input_width, u32 input_height, u32 target_width,
                     u32 target_height, struct imgu_abi_osys_config *cfg,
                     struct imgu_css_scaler_info *info_luma,
                     struct imgu_css_scaler_info *info_chroma,
                     unsigned int *output_width, unsigned int *output_height,
                     unsigned int *procmode)
{
        u32 out_width = target_width;
        u32 out_height = target_height;
        const unsigned int height_alignment = 2;
        int phase_step_correction = -1;

        /*
         * Calculate scaled output width. If the horizontal and vertical scaling
         * factor is different, then choose the biggest and crop off excess
         * lines or columns after formatting.
         */
        if (target_height * input_width > target_width * input_height)
                target_width = DIV_ROUND_UP(target_height * input_width,
                                            input_height);

        if (input_width == target_width)
                *procmode = IMGU_ABI_OSYS_PROCMODE_BYPASS;
        else
                *procmode = IMGU_ABI_OSYS_PROCMODE_DOWNSCALE;

        memset(&cfg->scaler_coeffs_chroma, 0,
               sizeof(cfg->scaler_coeffs_chroma));
        memset(&cfg->scaler_coeffs_luma, 0, sizeof(cfg->scaler_coeffs_luma));
        do {
                phase_step_correction++;

                imgu_css_scaler_setup_lut(IMGU_SCALER_TAPS_Y,
                                          input_width, target_width,
                                          phase_step_correction,
                                          imgu_css_downscale_4taps,
                                          IMGU_SCALER_DOWNSCALE_4TAPS_LEN,
                                          cfg->scaler_coeffs_luma, info_luma);

                imgu_css_scaler_setup_lut(IMGU_SCALER_TAPS_UV,
                                          input_width, target_width,
                                          phase_step_correction,
                                          imgu_css_downscale_2taps,
                                          IMGU_SCALER_DOWNSCALE_2TAPS_LEN,
                                          cfg->scaler_coeffs_chroma,
                                          info_chroma);

                out_width = imgu_css_scaler_calc_scaled_output(input_width,
                                                               info_luma);
                out_height = imgu_css_scaler_calc_scaled_output(input_height,
                                                                info_luma);
        } while ((out_width < target_width || out_height < target_height ||
                 !IS_ALIGNED(out_height, height_alignment)) &&
                 phase_step_correction <= 5);

        *output_width = out_width;
        *output_height = out_height;
}

/********************** Osys routines for scaler****************************/

static void imgu_css_osys_set_format(enum imgu_abi_frame_format host_format,
                                     unsigned int *osys_format,
                                     unsigned int *osys_tiling)
{
        *osys_format = IMGU_ABI_OSYS_FORMAT_YUV420;
        *osys_tiling = IMGU_ABI_OSYS_TILING_NONE;

        switch (host_format) {
        case IMGU_ABI_FRAME_FORMAT_YUV420:
                *osys_format = IMGU_ABI_OSYS_FORMAT_YUV420;
                break;
        case IMGU_ABI_FRAME_FORMAT_YV12:
                *osys_format = IMGU_ABI_OSYS_FORMAT_YV12;
                break;
        case IMGU_ABI_FRAME_FORMAT_NV12:
                *osys_format = IMGU_ABI_OSYS_FORMAT_NV12;
                break;
        case IMGU_ABI_FRAME_FORMAT_NV16:
                *osys_format = IMGU_ABI_OSYS_FORMAT_NV16;
                break;
        case IMGU_ABI_FRAME_FORMAT_NV21:
                *osys_format = IMGU_ABI_OSYS_FORMAT_NV21;
                break;
        case IMGU_ABI_FRAME_FORMAT_NV12_TILEY:
                *osys_format = IMGU_ABI_OSYS_FORMAT_NV12;
                *osys_tiling = IMGU_ABI_OSYS_TILING_Y;
                break;
        default:
                /* For now, assume use default values */
                break;
        }
}

/*
 * Function calculates input frame stripe offset, based
 * on output frame stripe offset and filter parameters.
 */
static int imgu_css_osys_calc_stripe_offset(int stripe_offset_out,
                                            int fir_phases, int phase_init,
                                            int phase_step, int pad_left)
{
        int stripe_offset_inp = stripe_offset_out * fir_phases -
                                pad_left * phase_step;

        return DIV_ROUND_UP(stripe_offset_inp - phase_init, phase_step);
}

/*
 * Calculate input frame phase, given the output frame
 * stripe offset and filter parameters
 */
static int imgu_css_osys_calc_stripe_phase_init(int stripe_offset_out,
                                                int fir_phases, int phase_init,
                                                int phase_step, int pad_left)
{
        int stripe_offset_inp =
                imgu_css_osys_calc_stripe_offset(stripe_offset_out,
                                                 fir_phases, phase_init,
                                                 phase_step, pad_left);

        return phase_init + ((pad_left + stripe_offset_inp) * phase_step) -
                stripe_offset_out * fir_phases;
}

/*
 * This function calculates input frame stripe width,
 * based on output frame stripe offset and filter parameters
 */
static int imgu_css_osys_calc_inp_stripe_width(int stripe_width_out,
                                               int fir_phases, int phase_init,
                                               int phase_step, int fir_taps,
                                               int pad_left, int pad_right)
{
        int stripe_width_inp = (stripe_width_out + fir_taps - 1) * fir_phases;

        stripe_width_inp = DIV_ROUND_UP(stripe_width_inp - phase_init,
                                        phase_step);

        return stripe_width_inp - pad_left - pad_right;
}

/*
 * This function calculates output frame stripe width, basedi
 * on output frame stripe offset and filter parameters
 */
static int imgu_css_osys_out_stripe_width(int stripe_width_inp, int fir_phases,
                                          int phase_init, int phase_step,
                                          int fir_taps, int pad_left,
                                          int pad_right, int column_offset)
{
        int stripe_width_out = (pad_left + stripe_width_inp +
                                pad_right - column_offset) * phase_step;

        stripe_width_out = (stripe_width_out + phase_init) / fir_phases;

        return stripe_width_out - (fir_taps - 1);
}

struct imgu_css_reso {
        unsigned int input_width;
        unsigned int input_height;
        enum imgu_abi_frame_format input_format;
        unsigned int pin_width[IMGU_ABI_OSYS_PINS];
        unsigned int pin_height[IMGU_ABI_OSYS_PINS];
        unsigned int pin_stride[IMGU_ABI_OSYS_PINS];
        enum imgu_abi_frame_format pin_format[IMGU_ABI_OSYS_PINS];
        int chunk_width;
        int chunk_height;
        int block_height;
        int block_width;
};

struct imgu_css_frame_params {
        /* Output pins */
        unsigned int enable;
        unsigned int format;
        unsigned int flip;
        unsigned int mirror;
        unsigned int tiling;
        unsigned int reduce_range;
        unsigned int width;
        unsigned int height;
        unsigned int stride;
        unsigned int scaled;
        unsigned int crop_left;
        unsigned int crop_top;
};

struct imgu_css_stripe_params {
        unsigned int processing_mode;
        unsigned int phase_step;
        unsigned int exp_shift;
        unsigned int phase_init_left_y;
        unsigned int phase_init_left_uv;
        unsigned int phase_init_top_y;
        unsigned int phase_init_top_uv;
        unsigned int pad_left_y;
        unsigned int pad_left_uv;
        unsigned int pad_right_y;
        unsigned int pad_right_uv;
        unsigned int pad_top_y;
        unsigned int pad_top_uv;
        unsigned int pad_bottom_y;
        unsigned int pad_bottom_uv;
        unsigned int crop_left_y;
        unsigned int crop_top_y;
        unsigned int crop_left_uv;
        unsigned int crop_top_uv;
        unsigned int start_column_y;
        unsigned int start_column_uv;
        unsigned int chunk_width;
        unsigned int chunk_height;
        unsigned int block_width;
        unsigned int block_height;
        unsigned int input_width;
        unsigned int input_height;
        int output_width[IMGU_ABI_OSYS_PINS];
        int output_height[IMGU_ABI_OSYS_PINS];
        int output_offset[IMGU_ABI_OSYS_PINS];
};

/*
 * frame_params - size IMGU_ABI_OSYS_PINS
 * stripe_params - size IPU3_UAPI_MAX_STRIPES
 */
static int imgu_css_osys_calc_frame_and_stripe_params(
                struct imgu_css *css, unsigned int stripes,
                struct imgu_abi_osys_config *osys,
                struct imgu_css_scaler_info *scaler_luma,
                struct imgu_css_scaler_info *scaler_chroma,
                struct imgu_css_frame_params frame_params[],
                struct imgu_css_stripe_params stripe_params[],
                unsigned int pipe)
{
        struct imgu_css_reso reso;
        unsigned int output_width, pin, s;
        u32 input_width, input_height, target_width, target_height;
        unsigned int procmode = 0;
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];

        input_width = css_pipe->rect[IPU3_CSS_RECT_GDC].width;
        input_height = css_pipe->rect[IPU3_CSS_RECT_GDC].height;
        target_width = css_pipe->queue[IPU3_CSS_QUEUE_VF].fmt.mpix.width;
        target_height = css_pipe->queue[IPU3_CSS_QUEUE_VF].fmt.mpix.height;

        /* Frame parameters */

        /* Input width for Output System is output width of DVS (with GDC) */
        reso.input_width = css_pipe->rect[IPU3_CSS_RECT_GDC].width;

        /* Input height for Output System is output height of DVS (with GDC) */
        reso.input_height = css_pipe->rect[IPU3_CSS_RECT_GDC].height;

        reso.input_format =
                css_pipe->queue[IPU3_CSS_QUEUE_OUT].css_fmt->frame_format;

        reso.pin_width[IMGU_ABI_OSYS_PIN_OUT] =
                css_pipe->queue[IPU3_CSS_QUEUE_OUT].fmt.mpix.width;
        reso.pin_height[IMGU_ABI_OSYS_PIN_OUT] =
                css_pipe->queue[IPU3_CSS_QUEUE_OUT].fmt.mpix.height;
        reso.pin_stride[IMGU_ABI_OSYS_PIN_OUT] =
                css_pipe->queue[IPU3_CSS_QUEUE_OUT].width_pad;
        reso.pin_format[IMGU_ABI_OSYS_PIN_OUT] =
                css_pipe->queue[IPU3_CSS_QUEUE_OUT].css_fmt->frame_format;

        reso.pin_width[IMGU_ABI_OSYS_PIN_VF] =
                css_pipe->queue[IPU3_CSS_QUEUE_VF].fmt.mpix.width;
        reso.pin_height[IMGU_ABI_OSYS_PIN_VF] =
                css_pipe->queue[IPU3_CSS_QUEUE_VF].fmt.mpix.height;
        reso.pin_stride[IMGU_ABI_OSYS_PIN_VF] =
                css_pipe->queue[IPU3_CSS_QUEUE_VF].width_pad;
        reso.pin_format[IMGU_ABI_OSYS_PIN_VF] =
                css_pipe->queue[IPU3_CSS_QUEUE_VF].css_fmt->frame_format;

        /* Configure the frame parameters for all output pins */

        frame_params[IMGU_ABI_OSYS_PIN_OUT].width =
                css_pipe->queue[IPU3_CSS_QUEUE_OUT].fmt.mpix.width;
        frame_params[IMGU_ABI_OSYS_PIN_OUT].height =
                css_pipe->queue[IPU3_CSS_QUEUE_OUT].fmt.mpix.height;
        frame_params[IMGU_ABI_OSYS_PIN_VF].width =
                css_pipe->queue[IPU3_CSS_QUEUE_VF].fmt.mpix.width;
        frame_params[IMGU_ABI_OSYS_PIN_VF].height =
                css_pipe->queue[IPU3_CSS_QUEUE_VF].fmt.mpix.height;
        frame_params[IMGU_ABI_OSYS_PIN_VF].crop_top = 0;
        frame_params[IMGU_ABI_OSYS_PIN_VF].crop_left = 0;

        for (pin = 0; pin < IMGU_ABI_OSYS_PINS; pin++) {
                int enable = 0;
                int scaled = 0;
                unsigned int format = 0;
                unsigned int tiling = 0;

                frame_params[pin].flip = 0;
                frame_params[pin].mirror = 0;
                frame_params[pin].reduce_range = 0;
                if (reso.pin_width[pin] != 0 && reso.pin_height[pin] != 0) {
                        enable = 1;
                        if (pin == IMGU_ABI_OSYS_PIN_OUT) {
                                if (reso.input_width < reso.pin_width[pin] ||
                                    reso.input_height < reso.pin_height[pin])
                                        return -EINVAL;
                                /*
                                 * When input and output resolution is
                                 * different instead of scaling, cropping
                                 * should happen. Determine the crop factor
                                 * to do the symmetric cropping
                                 */
                                frame_params[pin].crop_left = roundclosest_down(
                                                (reso.input_width -
                                                 reso.pin_width[pin]) / 2,
                                                 IMGU_OSYS_DMA_CROP_W_LIMIT);
                                frame_params[pin].crop_top = roundclosest_down(
                                                (reso.input_height -
                                                 reso.pin_height[pin]) / 2,
                                                 IMGU_OSYS_DMA_CROP_H_LIMIT);
                        } else {
                                if (reso.pin_width[pin] != reso.input_width ||
                                    reso.pin_height[pin] != reso.input_height) {
                                        /*
                                         * If resolution is different at input
                                         * and output of OSYS, scaling is
                                         * considered except when pin is MAIN.
                                         * Later it will be decide whether
                                         * scaler factor is 1 or other
                                         * and cropping has to be done or not.
                                         */
                                        scaled = 1;
                                }
                        }
                        imgu_css_osys_set_format(reso.pin_format[pin], &format,
                                                 &tiling);
                } else {
                        enable = 0;
                }
                frame_params[pin].enable = enable;
                frame_params[pin].format = format;
                frame_params[pin].tiling = tiling;
                frame_params[pin].stride = reso.pin_stride[pin];
                frame_params[pin].scaled = scaled;
        }

        imgu_css_scaler_calc(input_width, input_height, target_width,
                             target_height, osys, scaler_luma, scaler_chroma,
                             &reso.pin_width[IMGU_ABI_OSYS_PIN_VF],
                             &reso.pin_height[IMGU_ABI_OSYS_PIN_VF], &procmode);
        dev_dbg(css->dev, "osys scaler procmode is %u", procmode);
        output_width = reso.pin_width[IMGU_ABI_OSYS_PIN_VF];

        if (output_width < reso.input_width / 2) {
                /* Scaling factor <= 0.5 */
                reso.chunk_width = IMGU_OSYS_BLOCK_WIDTH;
                reso.block_width = IMGU_OSYS_BLOCK_WIDTH;
        } else { /* 0.5 <= Scaling factor <= 1.0 */
                reso.chunk_width = IMGU_OSYS_BLOCK_WIDTH / 2;
                reso.block_width = IMGU_OSYS_BLOCK_WIDTH;
        }

        if (output_width <= reso.input_width * 7 / 8) {
                /* Scaling factor <= 0.875 */
                reso.chunk_height = IMGU_OSYS_BLOCK_HEIGHT;
                reso.block_height = IMGU_OSYS_BLOCK_HEIGHT;
        } else { /* 1.0 <= Scaling factor <= 1.75 */
                reso.chunk_height = IMGU_OSYS_BLOCK_HEIGHT / 2;
                reso.block_height = IMGU_OSYS_BLOCK_HEIGHT;
        }

        /*
         * Calculate scaler configuration parameters based on input and output
         * resolution.
         */

        if (frame_params[IMGU_ABI_OSYS_PIN_VF].enable) {
                /*
                 * When aspect ratio is different between target resolution and
                 * required resolution, determine the crop factor to do
                 * symmetric cropping
                 */
                u32 w = reso.pin_width[IMGU_ABI_OSYS_PIN_VF] -
                        frame_params[IMGU_ABI_OSYS_PIN_VF].width;
                u32 h = reso.pin_height[IMGU_ABI_OSYS_PIN_VF] -
                        frame_params[IMGU_ABI_OSYS_PIN_VF].height;

                frame_params[IMGU_ABI_OSYS_PIN_VF].crop_left =
                        roundclosest_down(w / 2, IMGU_OSYS_DMA_CROP_W_LIMIT);
                frame_params[IMGU_ABI_OSYS_PIN_VF].crop_top =
                        roundclosest_down(h / 2, IMGU_OSYS_DMA_CROP_H_LIMIT);

                if (reso.input_height % 4 || reso.input_width % 8) {
                        dev_err(css->dev, "OSYS input width is not multiple of 8 or\n");
                        dev_err(css->dev, "height is not multiple of 4\n");
                        return -EINVAL;
                }
        }

        /* Stripe parameters */

        if (frame_params[IMGU_ABI_OSYS_PIN_VF].enable) {
                output_width = reso.pin_width[IMGU_ABI_OSYS_PIN_VF];
        } else {
                /*
                 * in case scaler output is not enabled
                 * take output width as input width since
                 * there is no scaling at main pin.
                 * Due to the fact that main pin can be different
                 * from input resolution to osys in the case of cropping,
                 * main pin resolution is not taken.
                 */
                output_width = reso.input_width;
        }

        for (s = 0; s < stripes; s++) {
                int stripe_offset_inp_y = 0;
                int stripe_offset_inp_uv = 0;
                int stripe_offset_out_y = 0;
                int stripe_offset_out_uv = 0;
                int stripe_phase_init_y = scaler_luma->phase_init;
                int stripe_phase_init_uv = scaler_chroma->phase_init;
                int stripe_offset_blk_y = 0;
                int stripe_offset_blk_uv = 0;
                int stripe_offset_col_y = 0;
                int stripe_offset_col_uv = 0;
                int stripe_pad_left_y = scaler_luma->pad_left;
                int stripe_pad_left_uv = scaler_chroma->pad_left;
                int stripe_pad_right_y = scaler_luma->pad_right;
                int stripe_pad_right_uv = scaler_chroma->pad_right;
                int stripe_crop_left_y = scaler_luma->crop_left;
                int stripe_crop_left_uv = scaler_chroma->crop_left;
                int stripe_input_width_y = reso.input_width;
                int stripe_input_width_uv = 0;
                int stripe_output_width_y = output_width;
                int stripe_output_width_uv = 0;
                int chunk_floor_y = 0;
                int chunk_floor_uv = 0;
                int chunk_ceil_uv = 0;

                if (stripes > 1) {
                        if (s > 0) {
                                /* Calculate stripe offsets */
                                stripe_offset_out_y =
                                        output_width * s / stripes;
                                stripe_offset_out_y =
                                        rounddown(stripe_offset_out_y,
                                                  IPU3_UAPI_ISP_VEC_ELEMS);
                                stripe_offset_out_uv = stripe_offset_out_y /
                                                IMGU_LUMA_TO_CHROMA_RATIO;
                                stripe_offset_inp_y =
                                        imgu_css_osys_calc_stripe_offset(
                                                stripe_offset_out_y,
                                                IMGU_OSYS_FIR_PHASES,
                                                scaler_luma->phase_init,
                                                scaler_luma->phase_step,
                                                scaler_luma->pad_left);
                                stripe_offset_inp_uv =
                                        imgu_css_osys_calc_stripe_offset(
                                                stripe_offset_out_uv,
                                                IMGU_OSYS_FIR_PHASES,
                                                scaler_chroma->phase_init,
                                                scaler_chroma->phase_step,
                                                scaler_chroma->pad_left);

                                /* Calculate stripe phase init */
                                stripe_phase_init_y =
                                        imgu_css_osys_calc_stripe_phase_init(
                                                stripe_offset_out_y,
                                                IMGU_OSYS_FIR_PHASES,
                                                scaler_luma->phase_init,
                                                scaler_luma->phase_step,
                                                scaler_luma->pad_left);
                                stripe_phase_init_uv =
                                        imgu_css_osys_calc_stripe_phase_init(
                                                stripe_offset_out_uv,
                                                IMGU_OSYS_FIR_PHASES,
                                                scaler_chroma->phase_init,
                                                scaler_chroma->phase_step,
                                                scaler_chroma->pad_left);

                                /*
                                 * Chunk boundary corner case - luma and chroma
                                 * start from different input chunks.
                                 */
                                chunk_floor_y = rounddown(stripe_offset_inp_y,
                                                          reso.chunk_width);
                                chunk_floor_uv =
                                        rounddown(stripe_offset_inp_uv,
                                                  reso.chunk_width /
                                                  IMGU_LUMA_TO_CHROMA_RATIO);

                                if (chunk_floor_y != chunk_floor_uv *
                                    IMGU_LUMA_TO_CHROMA_RATIO) {
                                        /*
                                         * Match starting luma/chroma chunks.
                                         * Decrease offset for UV and add output
                                         * cropping.
                                         */
                                        stripe_offset_inp_uv -= 1;
                                        stripe_crop_left_uv += 1;
                                        stripe_phase_init_uv -=
                                                scaler_luma->phase_step;
                                        if (stripe_phase_init_uv < 0)
                                                stripe_phase_init_uv =
                                                        stripe_phase_init_uv +
                                                        IMGU_OSYS_FIR_PHASES;
                                }
                                /*
                                 * FW workaround for a HW bug: if the first
                                 * chroma pixel is generated exactly at the end
                                 * of chunck scaler HW may not output the pixel
                                 * for downscale factors smaller than 1.5
                                 * (timing issue).
                                 */
                                chunk_ceil_uv =
                                        roundup(stripe_offset_inp_uv,
                                                reso.chunk_width /
                                                IMGU_LUMA_TO_CHROMA_RATIO);

                                if (stripe_offset_inp_uv ==
                                    chunk_ceil_uv - IMGU_OSYS_TAPS_UV) {
                                        /*
                                         * Decrease input offset and add
                                         * output cropping
                                         */
                                        stripe_offset_inp_uv -= 1;
                                        stripe_phase_init_uv -=
                                                scaler_luma->phase_step;
                                        if (stripe_phase_init_uv < 0) {
                                                stripe_phase_init_uv +=
                                                        IMGU_OSYS_FIR_PHASES;
                                                stripe_crop_left_uv += 1;
                                        }
                                }

                                /*
                                 * Calculate block and column offsets for the
                                 * input stripe
                                 */
                                stripe_offset_blk_y =
                                        rounddown(stripe_offset_inp_y,
                                                  IMGU_INPUT_BLOCK_WIDTH);
                                stripe_offset_blk_uv =
                                        rounddown(stripe_offset_inp_uv,
                                                  IMGU_INPUT_BLOCK_WIDTH /
                                                  IMGU_LUMA_TO_CHROMA_RATIO);
                                stripe_offset_col_y = stripe_offset_inp_y -
                                                        stripe_offset_blk_y;
                                stripe_offset_col_uv = stripe_offset_inp_uv -
                                                        stripe_offset_blk_uv;

                                /* Left padding is only for the first stripe */
                                stripe_pad_left_y = 0;
                                stripe_pad_left_uv = 0;
                        }

                        /* Right padding is only for the last stripe */
                        if (s < stripes - 1) {
                                int next_offset;

                                stripe_pad_right_y = 0;
                                stripe_pad_right_uv = 0;

                                next_offset = output_width * (s + 1) / stripes;
                                next_offset = rounddown(next_offset, 64);
                                stripe_output_width_y = next_offset -
                                                        stripe_offset_out_y;
                        } else {
                                stripe_output_width_y = output_width -
                                                        stripe_offset_out_y;
                        }

                        /* Calculate target output stripe width */
                        stripe_output_width_uv = stripe_output_width_y /
                                                IMGU_LUMA_TO_CHROMA_RATIO;
                        /* Calculate input stripe width */
                        stripe_input_width_y = stripe_offset_col_y +
                                imgu_css_osys_calc_inp_stripe_width(
                                                stripe_output_width_y,
                                                IMGU_OSYS_FIR_PHASES,
                                                stripe_phase_init_y,
                                                scaler_luma->phase_step,
                                                IMGU_OSYS_TAPS_Y,
                                                stripe_pad_left_y,
                                                stripe_pad_right_y);

                        stripe_input_width_uv = stripe_offset_col_uv +
                                imgu_css_osys_calc_inp_stripe_width(
                                                stripe_output_width_uv,
                                                IMGU_OSYS_FIR_PHASES,
                                                stripe_phase_init_uv,
                                                scaler_chroma->phase_step,
                                                IMGU_OSYS_TAPS_UV,
                                                stripe_pad_left_uv,
                                                stripe_pad_right_uv);

                        stripe_input_width_uv = max(DIV_ROUND_UP(
                                                    stripe_input_width_y,
                                                    IMGU_LUMA_TO_CHROMA_RATIO),
                                                    stripe_input_width_uv);

                        stripe_input_width_y = stripe_input_width_uv *
                                                IMGU_LUMA_TO_CHROMA_RATIO;

                        if (s >= stripes - 1) {
                                stripe_input_width_y = reso.input_width -
                                        stripe_offset_blk_y;
                                /*
                                 * The scaler requires that the last stripe
                                 * spans at least two input blocks.
                                 */
                        }

                        /*
                         * Spec: input stripe width must be a multiple of 8.
                         * Increase the input width and recalculate the output
                         * width. This may produce an extra column of junk
                         * blocks which will be overwritten by the
                         * next stripe.
                         */
                        stripe_input_width_y = ALIGN(stripe_input_width_y, 8);
                        stripe_output_width_y =
                                imgu_css_osys_out_stripe_width(
                                                stripe_input_width_y,
                                                IMGU_OSYS_FIR_PHASES,
                                                stripe_phase_init_y,
                                                scaler_luma->phase_step,
                                                IMGU_OSYS_TAPS_Y,
                                                stripe_pad_left_y,
                                                stripe_pad_right_y,
                                                stripe_offset_col_y);

                        stripe_output_width_y =
                                        rounddown(stripe_output_width_y,
                                                  IMGU_LUMA_TO_CHROMA_RATIO);
                }
                /*
                 * Following section executes and process parameters
                 * for both cases - Striping or No Striping.
                 */
                {
                        unsigned int i;
                        int pin_scale = 0;
                        /*Input resolution */

                        stripe_params[s].input_width = stripe_input_width_y;
                        stripe_params[s].input_height = reso.input_height;

                        for (i = 0; i < IMGU_ABI_OSYS_PINS; i++) {
                                if (frame_params[i].scaled) {
                                        /*
                                         * Output stripe resolution and offset
                                         * as produced by the scaler; actual
                                         * output resolution may be slightly
                                         * smaller.
                                         */
                                        stripe_params[s].output_width[i] =
                                                stripe_output_width_y;
                                        stripe_params[s].output_height[i] =
                                                reso.pin_height[i];
                                        stripe_params[s].output_offset[i] =
                                                stripe_offset_out_y;

                                        pin_scale += frame_params[i].scaled;
                                } else {
                                        /* Unscaled pin */
                                        stripe_params[s].output_width[i] =
                                                stripe_params[s].input_width;
                                        stripe_params[s].output_height[i] =
                                                stripe_params[s].input_height;
                                        stripe_params[s].output_offset[i] =
                                                stripe_offset_blk_y;
                                }
                        }

                        /* If no pin use scale, we use BYPASS mode */
                        stripe_params[s].processing_mode = procmode;
                        stripe_params[s].phase_step = scaler_luma->phase_step;
                        stripe_params[s].exp_shift = scaler_luma->exp_shift;
                        stripe_params[s].phase_init_left_y =
                                stripe_phase_init_y;
                        stripe_params[s].phase_init_left_uv =
                                stripe_phase_init_uv;
                        stripe_params[s].phase_init_top_y =
                                scaler_luma->phase_init;
                        stripe_params[s].phase_init_top_uv =
                                scaler_chroma->phase_init;
                        stripe_params[s].pad_left_y = stripe_pad_left_y;
                        stripe_params[s].pad_left_uv = stripe_pad_left_uv;
                        stripe_params[s].pad_right_y = stripe_pad_right_y;
                        stripe_params[s].pad_right_uv = stripe_pad_right_uv;
                        stripe_params[s].pad_top_y = scaler_luma->pad_left;
                        stripe_params[s].pad_top_uv = scaler_chroma->pad_left;
                        stripe_params[s].pad_bottom_y = scaler_luma->pad_right;
                        stripe_params[s].pad_bottom_uv =
                                scaler_chroma->pad_right;
                        stripe_params[s].crop_left_y = stripe_crop_left_y;
                        stripe_params[s].crop_top_y = scaler_luma->crop_top;
                        stripe_params[s].crop_left_uv = stripe_crop_left_uv;
                        stripe_params[s].crop_top_uv = scaler_chroma->crop_top;
                        stripe_params[s].start_column_y = stripe_offset_col_y;
                        stripe_params[s].start_column_uv = stripe_offset_col_uv;
                        stripe_params[s].chunk_width = reso.chunk_width;
                        stripe_params[s].chunk_height = reso.chunk_height;
                        stripe_params[s].block_width = reso.block_width;
                        stripe_params[s].block_height = reso.block_height;
                }
        }

        return 0;
}

/*
 * This function configures the Output Formatter System, given the number of
 * stripes, scaler luma and chrome parameters
 */
static int imgu_css_osys_calc(struct imgu_css *css, unsigned int pipe,
                              unsigned int stripes,
                              struct imgu_abi_osys_config *osys,
                              struct imgu_css_scaler_info *scaler_luma,
                              struct imgu_css_scaler_info *scaler_chroma,
                              struct imgu_abi_stripes block_stripes[])
{
        struct imgu_css_frame_params frame_params[IMGU_ABI_OSYS_PINS];
        struct imgu_css_stripe_params stripe_params[IPU3_UAPI_MAX_STRIPES];
        struct imgu_abi_osys_formatter_params *param;
        unsigned int pin, s;
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];

        memset(osys, 0, sizeof(*osys));

        /* Compute the frame and stripe params */
        if (imgu_css_osys_calc_frame_and_stripe_params(css, stripes, osys,
                                                       scaler_luma,
                                                       scaler_chroma,
                                                       frame_params,
                                                       stripe_params, pipe))
                return -EINVAL;

        /* Output formatter system parameters */

        for (s = 0; s < stripes; s++) {
                struct imgu_abi_osys_scaler_params *scaler =
                                        &osys->scaler[s].param;
                int fifo_addr_fmt = IMGU_FIFO_ADDR_SCALER_TO_FMT;
                int fifo_addr_ack = IMGU_FIFO_ADDR_SCALER_TO_SP;

                /* OUTPUT 0 / PIN 0 is only Scaler output */
                scaler->inp_buf_y_st_addr = IMGU_VMEM1_INP_BUF_ADDR;

                /*
                 * = (IMGU_OSYS_BLOCK_WIDTH / IMGU_VMEM1_ELEMS_PER_VEC)
                 * = (2 * IPU3_UAPI_ISP_VEC_ELEMS) /
                 *   (IMGU_HIVE_OF_SYS_OF_SYSTEM_NWAYS)
                 * = 2 * 64 / 32 = 4
                 */
                scaler->inp_buf_y_line_stride = IMGU_VMEM1_Y_STRIDE;
                /*
                 * = (IMGU_VMEM1_V_OFFSET + VMEM1_uv_size)
                 * = (IMGU_VMEM1_U_OFFSET + VMEM1_uv_size) +
                 *      (VMEM1_y_size / 4)
                 * = (VMEM1_y_size) + (VMEM1_y_size / 4) +
                 * (IMGU_OSYS_BLOCK_HEIGHT * IMGU_VMEM1_Y_STRIDE)/4
                 * = (IMGU_OSYS_BLOCK_HEIGHT * IMGU_VMEM1_Y_STRIDE)
                 */
                scaler->inp_buf_y_buffer_stride = IMGU_VMEM1_BUF_SIZE;
                scaler->inp_buf_u_st_addr = IMGU_VMEM1_INP_BUF_ADDR +
                                                IMGU_VMEM1_U_OFFSET;
                scaler->inp_buf_v_st_addr = IMGU_VMEM1_INP_BUF_ADDR +
                                                IMGU_VMEM1_V_OFFSET;
                scaler->inp_buf_uv_line_stride = IMGU_VMEM1_UV_STRIDE;
                scaler->inp_buf_uv_buffer_stride = IMGU_VMEM1_BUF_SIZE;
                scaler->inp_buf_chunk_width = stripe_params[s].chunk_width;
                scaler->inp_buf_nr_buffers = IMGU_OSYS_NUM_INPUT_BUFFERS;

                /* Output buffers */
                scaler->out_buf_y_st_addr = IMGU_VMEM1_INT_BUF_ADDR;
                scaler->out_buf_y_line_stride = stripe_params[s].block_width /
                                                IMGU_VMEM1_ELEMS_PER_VEC;
                scaler->out_buf_y_buffer_stride = IMGU_VMEM1_BUF_SIZE;
                scaler->out_buf_u_st_addr = IMGU_VMEM1_INT_BUF_ADDR +
                                                IMGU_VMEM1_U_OFFSET;
                scaler->out_buf_v_st_addr = IMGU_VMEM1_INT_BUF_ADDR +
                                                IMGU_VMEM1_V_OFFSET;
                scaler->out_buf_uv_line_stride = stripe_params[s].block_width /
                                                IMGU_VMEM1_ELEMS_PER_VEC / 2;
                scaler->out_buf_uv_buffer_stride = IMGU_VMEM1_BUF_SIZE;
                scaler->out_buf_nr_buffers = IMGU_OSYS_NUM_INTERM_BUFFERS;

                /* Intermediate buffers */
                scaler->int_buf_y_st_addr = IMGU_VMEM2_BUF_Y_ADDR;
                scaler->int_buf_y_line_stride = IMGU_VMEM2_BUF_Y_STRIDE;
                scaler->int_buf_u_st_addr = IMGU_VMEM2_BUF_U_ADDR;
                scaler->int_buf_v_st_addr = IMGU_VMEM2_BUF_V_ADDR;
                scaler->int_buf_uv_line_stride = IMGU_VMEM2_BUF_UV_STRIDE;
                scaler->int_buf_height = IMGU_VMEM2_LINES_PER_BLOCK;
                scaler->int_buf_chunk_width = stripe_params[s].chunk_height;
                scaler->int_buf_chunk_height = stripe_params[s].block_width;

                /* Context buffers */
                scaler->ctx_buf_hor_y_st_addr = IMGU_VMEM3_HOR_Y_ADDR;
                scaler->ctx_buf_hor_u_st_addr = IMGU_VMEM3_HOR_U_ADDR;
                scaler->ctx_buf_hor_v_st_addr = IMGU_VMEM3_HOR_V_ADDR;
                scaler->ctx_buf_ver_y_st_addr = IMGU_VMEM3_VER_Y_ADDR;
                scaler->ctx_buf_ver_u_st_addr = IMGU_VMEM3_VER_U_ADDR;
                scaler->ctx_buf_ver_v_st_addr = IMGU_VMEM3_VER_V_ADDR;

                /* Addresses for release-input and process-output tokens */
                scaler->release_inp_buf_addr = fifo_addr_ack;
                scaler->release_inp_buf_en = 1;
                scaler->release_out_buf_en = 1;
                scaler->process_out_buf_addr = fifo_addr_fmt;

                /* Settings dimensions, padding, cropping */
                scaler->input_image_y_width = stripe_params[s].input_width;
                scaler->input_image_y_height = stripe_params[s].input_height;
                scaler->input_image_y_start_column =
                                        stripe_params[s].start_column_y;
                scaler->input_image_uv_start_column =
                                        stripe_params[s].start_column_uv;
                scaler->input_image_y_left_pad = stripe_params[s].pad_left_y;
                scaler->input_image_uv_left_pad = stripe_params[s].pad_left_uv;
                scaler->input_image_y_right_pad = stripe_params[s].pad_right_y;
                scaler->input_image_uv_right_pad =
                                        stripe_params[s].pad_right_uv;
                scaler->input_image_y_top_pad = stripe_params[s].pad_top_y;
                scaler->input_image_uv_top_pad = stripe_params[s].pad_top_uv;
                scaler->input_image_y_bottom_pad =
                                        stripe_params[s].pad_bottom_y;
                scaler->input_image_uv_bottom_pad =
                                        stripe_params[s].pad_bottom_uv;
                scaler->processing_mode = stripe_params[s].processing_mode;
                scaler->scaling_ratio = stripe_params[s].phase_step;
                scaler->y_left_phase_init = stripe_params[s].phase_init_left_y;
                scaler->uv_left_phase_init =
                                        stripe_params[s].phase_init_left_uv;
                scaler->y_top_phase_init = stripe_params[s].phase_init_top_y;
                scaler->uv_top_phase_init = stripe_params[s].phase_init_top_uv;
                scaler->coeffs_exp_shift = stripe_params[s].exp_shift;
                scaler->out_y_left_crop = stripe_params[s].crop_left_y;
                scaler->out_uv_left_crop = stripe_params[s].crop_left_uv;
                scaler->out_y_top_crop = stripe_params[s].crop_top_y;
                scaler->out_uv_top_crop = stripe_params[s].crop_top_uv;

                for (pin = 0; pin < IMGU_ABI_OSYS_PINS; pin++) {
                        int in_fifo_addr;
                        int out_fifo_addr;
                        int block_width_vecs;
                        int input_width_s;
                        int input_width_vecs;
                        int input_buf_y_st_addr;
                        int input_buf_u_st_addr;
                        int input_buf_v_st_addr;
                        int input_buf_y_line_stride;
                        int input_buf_uv_line_stride;
                        int output_buf_y_line_stride;
                        int output_buf_uv_line_stride;
                        int output_buf_nr_y_lines;
                        int block_height;
                        int block_width;
                        struct imgu_abi_osys_frame_params *fr_pr;

                        fr_pr = &osys->frame[pin].param;

                        /* Frame parameters */
                        fr_pr->enable = frame_params[pin].enable;
                        fr_pr->format = frame_params[pin].format;
                        fr_pr->mirror = frame_params[pin].mirror;
                        fr_pr->flip = frame_params[pin].flip;

                        fr_pr->tiling = frame_params[pin].tiling;
                        fr_pr->width = frame_params[pin].width;
                        fr_pr->height = frame_params[pin].height;
                        fr_pr->stride = frame_params[pin].stride;
                        fr_pr->scaled = frame_params[pin].scaled;

                        /* Stripe parameters */
                        osys->stripe[s].crop_top[pin] =
                                frame_params[pin].crop_top;
                        osys->stripe[s].input_width =
                                stripe_params[s].input_width;
                        osys->stripe[s].input_height =
                                stripe_params[s].input_height;
                        osys->stripe[s].block_height =
                                stripe_params[s].block_height;
                        osys->stripe[s].block_width =
                                stripe_params[s].block_width;
                        osys->stripe[s].output_width[pin] =
                                stripe_params[s].output_width[pin];
                        osys->stripe[s].output_height[pin] =
                                stripe_params[s].output_height[pin];

                        if (s == 0) {
                                /* Only first stripe should do left cropping */
                                osys->stripe[s].crop_left[pin] =
                                        frame_params[pin].crop_left;
                                osys->stripe[s].output_offset[pin] =
                                        stripe_params[s].output_offset[pin];
                        } else {
                                /*
                                 * Stripe offset for other strips should be
                                 * adjusted according to the cropping done
                                 * at the first strip
                                 */
                                osys->stripe[s].crop_left[pin] = 0;
                                osys->stripe[s].output_offset[pin] =
                                        (stripe_params[s].output_offset[pin] -
                                         osys->stripe[0].crop_left[pin]);
                        }

                        if (!frame_params[pin].enable)
                                continue;

                        /* Formatter: configurations */

                        /*
                         * Get the dimensions of the input blocks of the
                         * formatter, which is the same as the output
                         * blocks of the scaler.
                         */
                        if (frame_params[pin].scaled) {
                                block_height = stripe_params[s].block_height;
                                block_width = stripe_params[s].block_width;
                        } else {
                                block_height = IMGU_OSYS_BLOCK_HEIGHT;
                                block_width = IMGU_OSYS_BLOCK_WIDTH;
                        }
                        block_width_vecs =
                                        block_width / IMGU_VMEM1_ELEMS_PER_VEC;
                        /*
                         * The input/output line stride depends on the
                         * block size.
                         */
                        input_buf_y_line_stride = block_width_vecs;
                        input_buf_uv_line_stride = block_width_vecs / 2;
                        output_buf_y_line_stride = block_width_vecs;
                        output_buf_uv_line_stride = block_width_vecs / 2;
                        output_buf_nr_y_lines = block_height;
                        if (frame_params[pin].format ==
                            IMGU_ABI_OSYS_FORMAT_NV12 ||
                            frame_params[pin].format ==
                            IMGU_ABI_OSYS_FORMAT_NV21)
                                output_buf_uv_line_stride =
                                        output_buf_y_line_stride;

                        /*
                         * Tiled outputs use a different output buffer
                         * configuration. The input (= scaler output) block
                         * width translates to a tile height, and the block
                         * height to the tile width. The default block size of
                         * 128x32 maps exactly onto a 4kB tile (512x8) for Y.
                         * For UV, the tile width is always half.
                         */
                        if (frame_params[pin].tiling) {
                                output_buf_nr_y_lines = 8;
                                output_buf_y_line_stride = 512 /
                                        IMGU_VMEM1_ELEMS_PER_VEC;
                                output_buf_uv_line_stride = 256 /
                                        IMGU_VMEM1_ELEMS_PER_VEC;
                        }

                        /*
                         * Store the output buffer line stride. Will be
                         * used to compute buffer offsets in boundary
                         * conditions when output blocks are partially
                         * outside the image.
                         */
                        osys->stripe[s].buf_stride[pin] =
                                output_buf_y_line_stride *
                                IMGU_HIVE_OF_SYS_OF_SYSTEM_NWAYS;
                        if (frame_params[pin].scaled) {
                                /*
                                 * The input buffs are the intermediate
                                 * buffers (scalers' output)
                                 */
                                input_buf_y_st_addr = IMGU_VMEM1_INT_BUF_ADDR;
                                input_buf_u_st_addr = IMGU_VMEM1_INT_BUF_ADDR +
                                                        IMGU_VMEM1_U_OFFSET;
                                input_buf_v_st_addr = IMGU_VMEM1_INT_BUF_ADDR +
                                                        IMGU_VMEM1_V_OFFSET;
                        } else {
                                /*
                                 * The input bufferss are the buffers
                                 * filled by the SP
                                 */
                                input_buf_y_st_addr = IMGU_VMEM1_INP_BUF_ADDR;
                                input_buf_u_st_addr = IMGU_VMEM1_INP_BUF_ADDR +
                                                        IMGU_VMEM1_U_OFFSET;
                                input_buf_v_st_addr = IMGU_VMEM1_INP_BUF_ADDR +
                                                        IMGU_VMEM1_V_OFFSET;
                        }

                        /*
                         * The formatter input width must be rounded to
                         * the block width. Otherwise the formatter will
                         * not recognize the end of the line, resulting
                         * in incorrect tiling (system may hang!) and
                         * possibly other problems.
                         */
                        input_width_s =
                                roundup(stripe_params[s].output_width[pin],
                                        block_width);
                        input_width_vecs = input_width_s /
                                        IMGU_VMEM1_ELEMS_PER_VEC;
                        out_fifo_addr = IMGU_FIFO_ADDR_FMT_TO_SP;
                        /*
                         * Process-output tokens must be sent to the SP.
                         * When scaling, the release-input tokens can be
                         * sent directly to the scaler, otherwise the
                         * formatter should send them to the SP.
                         */
                        if (frame_params[pin].scaled)
                                in_fifo_addr = IMGU_FIFO_ADDR_FMT_TO_SCALER;
                        else
                                in_fifo_addr = IMGU_FIFO_ADDR_FMT_TO_SP;

                        /* Formatter */
                        param = &osys->formatter[s][pin].param;

                        param->format = frame_params[pin].format;
                        param->flip = frame_params[pin].flip;
                        param->mirror = frame_params[pin].mirror;
                        param->tiling = frame_params[pin].tiling;
                        param->reduce_range = frame_params[pin].reduce_range;
                        param->alpha_blending = 0;
                        param->release_inp_addr = in_fifo_addr;
                        param->release_inp_en = 1;
                        param->process_out_buf_addr = out_fifo_addr;
                        param->image_width_vecs = input_width_vecs;
                        param->image_height_lines =
                                stripe_params[s].output_height[pin];
                        param->inp_buff_y_st_addr = input_buf_y_st_addr;
                        param->inp_buff_y_line_stride = input_buf_y_line_stride;
                        param->inp_buff_y_buffer_stride = IMGU_VMEM1_BUF_SIZE;
                        param->int_buff_u_st_addr = input_buf_u_st_addr;
                        param->int_buff_v_st_addr = input_buf_v_st_addr;
                        param->inp_buff_uv_line_stride =
                                input_buf_uv_line_stride;
                        param->inp_buff_uv_buffer_stride = IMGU_VMEM1_BUF_SIZE;
                        param->out_buff_level = 0;
                        param->out_buff_nr_y_lines = output_buf_nr_y_lines;
                        param->out_buff_u_st_offset = IMGU_VMEM1_U_OFFSET;
                        param->out_buff_v_st_offset = IMGU_VMEM1_V_OFFSET;
                        param->out_buff_y_line_stride =
                                output_buf_y_line_stride;
                        param->out_buff_uv_line_stride =
                                output_buf_uv_line_stride;
                        param->hist_buff_st_addr = IMGU_VMEM1_HST_BUF_ADDR;
                        param->hist_buff_line_stride =
                                IMGU_VMEM1_HST_BUF_STRIDE;
                        param->hist_buff_nr_lines = IMGU_VMEM1_HST_BUF_NLINES;
                }
        }

        block_stripes[0].offset = 0;
        if (stripes <= 1) {
                block_stripes[0].width = stripe_params[0].input_width;
                block_stripes[0].height = stripe_params[0].input_height;
        } else {
                struct imgu_fw_info *bi =
                        &css->fwp->binary_header[css_pipe->bindex];
                unsigned int sp_block_width =
                                bi->info.isp.sp.block.block_width *
                                IPU3_UAPI_ISP_VEC_ELEMS;

                block_stripes[0].width = roundup(stripe_params[0].input_width,
                                                 sp_block_width);
                block_stripes[1].offset =
                        rounddown(css_pipe->rect[IPU3_CSS_RECT_GDC].width -
                                  stripe_params[1].input_width, sp_block_width);
                block_stripes[1].width =
                        roundup(css_pipe->rect[IPU3_CSS_RECT_GDC].width -
                                block_stripes[1].offset, sp_block_width);
                block_stripes[0].height = css_pipe->rect[IPU3_CSS_RECT_GDC].height;
                block_stripes[1].height = block_stripes[0].height;
        }

        return 0;
}

/*********************** Mostly 3A operations ******************************/

/*
 * This function creates a "TO-DO list" (operations) for the sp code.
 *
 * There are 2 types of operations:
 * 1. Transfer: Issue DMA transfer request for copying grid cells from DDR to
 *    accelerator space (NOTE that this space is limited) associated data:
 *    DDR address + accelerator's config set index(acc's address).
 *
 * 2. Issue "Process Lines Command" to shd accelerator
 *    associated data: #lines + which config set to use (actually, accelerator
 *    will use x AND (x+1)%num_of_sets - NOTE that this implies the restriction
 *    of not touching config sets x & (x+1)%num_of_sets when process_lines(x)
 *    is active).
 *
 * Basically there are 2 types of operations "chunks":
 * 1. "initial chunk": Initially, we do as much transfers as we can (and need)
 *    [0 - max sets(3) ] followed by 1 or 2 "process lines" operations.
 *
 * 2. "regular chunk" - 1 transfer followed by 1 process line operation.
 *    (in some cases we might need additional transfer ate the last chunk).
 *
 * for some case:
 * --> init
 *      tr (0)
 *      tr (1)
 *      tr (2)
 *      pl (0)
 *      pl (1)
 * --> ack (0)
 *      tr (3)
 *      pl (2)
 * --> ack (1)
 *      pl (3)
 * --> ack (2)
 *      do nothing
 * --> ack (3)
 *      do nothing
 */

static int
imgu_css_shd_ops_calc(struct imgu_abi_shd_intra_frame_operations_data *ops,
                      const struct ipu3_uapi_shd_grid_config *grid,
                      unsigned int image_height)
{
        unsigned int block_height = 1 << grid->block_height_log2;
        unsigned int grid_height_per_slice = grid->grid_height_per_slice;
        unsigned int set_height = grid_height_per_slice * block_height;

        /* We currently support only abs(y_start) > grid_height_per_slice */
        unsigned int positive_y_start = (unsigned int)-grid->y_start;
        unsigned int first_process_lines =
                                set_height - (positive_y_start % set_height);
        unsigned int last_set_height;
        unsigned int num_of_sets;

        struct imgu_abi_acc_operation *p_op;
        struct imgu_abi_acc_process_lines_cmd_data *p_pl;
        struct imgu_abi_shd_transfer_luts_set_data *p_tr;

        unsigned int op_idx, pl_idx, tr_idx;
        unsigned char tr_set_num, pl_cfg_set;

        /*
         * When the number of lines for the last process lines command
         * is equal to a set height, we need another line of grid cell -
         * additional transfer is required.
         */
        unsigned char last_tr = 0;

        /* Add "process lines" command to the list of operations */
        bool add_pl;
        /* Add DMA xfer (config set) command to the list of ops */
        bool add_tr;

        /*
         * Available partial grid (the part that fits into #IMGU_SHD_SETS sets)
         * doesn't cover whole frame - need to process in chunks
         */
        if (image_height > first_process_lines) {
                last_set_height =
                        (image_height - first_process_lines) % set_height;
                num_of_sets = last_set_height > 0 ?
                        (image_height - first_process_lines) / set_height + 2 :
                        (image_height - first_process_lines) / set_height + 1;
                last_tr = (set_height - last_set_height <= block_height ||
                           last_set_height == 0) ? 1 : 0;
        } else { /* partial grid covers whole frame */
                last_set_height = 0;
                num_of_sets = 1;
                first_process_lines = image_height;
                last_tr = set_height - image_height <= block_height ? 1 : 0;
        }

        /* Init operations lists and counters */
        p_op = ops->operation_list;
        op_idx = 0;
        p_pl = ops->process_lines_data;
        pl_idx = 0;
        p_tr = ops->transfer_data;
        tr_idx = 0;

        memset(ops, 0, sizeof(*ops));

        /* Cyclic counters that holds config set number [0,IMGU_SHD_SETS) */
        tr_set_num = 0;
        pl_cfg_set = 0;

        /*
         * Always start with a transfer - process lines command must be
         * initiated only after appropriate config sets are in place
         * (2 configuration sets per process line command, except for last one).
         */
        add_pl = false;
        add_tr = true;

        while (add_pl || add_tr) {
                /* Transfer ops */
                if (add_tr) {
                        if (op_idx >= IMGU_ABI_SHD_MAX_OPERATIONS ||
                            tr_idx >= IMGU_ABI_SHD_MAX_TRANSFERS)
                                return -EINVAL;
                        p_op[op_idx].op_type =
                                IMGU_ABI_ACC_OPTYPE_TRANSFER_DATA;
                        p_op[op_idx].op_indicator = IMGU_ABI_ACC_OP_IDLE;
                        op_idx++;
                        p_tr[tr_idx].set_number = tr_set_num;
                        tr_idx++;
                        tr_set_num = (tr_set_num + 1) % IMGU_SHD_SETS;
                }

                /* Process-lines ops */
                if (add_pl) {
                        if (op_idx >= IMGU_ABI_SHD_MAX_OPERATIONS ||
                            pl_idx >= IMGU_ABI_SHD_MAX_PROCESS_LINES)
                                return -EINVAL;
                        p_op[op_idx].op_type =
                                IMGU_ABI_ACC_OPTYPE_PROCESS_LINES;

                        /*
                         * In case we have 2 process lines commands -
                         * don't stop after the first one
                         */
                        if (pl_idx == 0 && num_of_sets != 1)
                                p_op[op_idx].op_indicator =
                                        IMGU_ABI_ACC_OP_IDLE;
                        /*
                         * Initiate last process lines command -
                         * end of operation list.
                         */
                        else if (pl_idx == num_of_sets - 1)
                                p_op[op_idx].op_indicator =
                                        IMGU_ABI_ACC_OP_END_OF_OPS;
                        /*
                         * Intermediate process line command - end of operation
                         * "chunk" (meaning few "transfers" followed by few
                         * "process lines" commands).
                         */
                        else
                                p_op[op_idx].op_indicator =
                                        IMGU_ABI_ACC_OP_END_OF_ACK;

                        op_idx++;

                        /* first process line operation */
                        if (pl_idx == 0)
                                p_pl[pl_idx].lines = first_process_lines;
                        /* Last process line operation */
                        else if (pl_idx == num_of_sets - 1 &&
                                 last_set_height > 0)
                                p_pl[pl_idx].lines = last_set_height;
                        else    /* "regular" process lines operation */
                                p_pl[pl_idx].lines = set_height;

                        p_pl[pl_idx].cfg_set = pl_cfg_set;
                        pl_idx++;
                        pl_cfg_set = (pl_cfg_set + 1) % IMGU_SHD_SETS;
                }

                /*
                 * Initially, we always transfer
                 * min(IMGU_SHD_SETS, num_of_sets) - after that we fill in the
                 * corresponding process lines commands.
                 */
                if (tr_idx == IMGU_SHD_SETS ||
                    tr_idx == num_of_sets + last_tr) {
                        add_tr = false;
                        add_pl = true;
                }

                /*
                 * We have finished the "initial" operations chunk -
                 * be ready to get more chunks.
                 */
                if (pl_idx == 2) {
                        add_tr = true;
                        add_pl = true;
                }

                /* Stop conditions for each operation type */
                if (tr_idx == num_of_sets + last_tr)
                        add_tr = false;
                if (pl_idx == num_of_sets)
                        add_pl = false;
        }

        return 0;
}

/*
 * The follow handshake procotol is the same for AF, AWB and AWB FR.
 *
 * for n sets of meta-data, the flow is:
 * --> init
 *  process-lines  (0)
 *  process-lines  (1)   eoc
 *  --> ack (0)
 *  read-meta-data (0)
 *  process-lines  (2)   eoc
 *  --> ack (1)
 *  read-meta-data (1)
 *  process-lines  (3)   eoc
 *  ...
 *
 *  --> ack (n-3)
 *  read-meta-data (n-3)
 *  process-lines  (n-1) eoc
 *  --> ack (n-2)
 *  read-meta-data (n-2) eoc
 *  --> ack (n-1)
 *  read-meta-data (n-1) eof
 *
 * for 2 sets we get:
 * --> init
 * pl (0)
 * pl (1) eoc
 * --> ack (0)
 * pl (2) - rest of image, if applicable)
 * rmd (0) eoc
 * --> ack (1)
 * rmd (1) eof
 * --> (ack (2))
 * do nothing
 *
 * for only one set:
 *
 * --> init
 * pl(0)   eoc
 * --> ack (0)
 * rmd (0) eof
 *
 * grid smaller than image case
 * for example 128x128 grid (block size 8x8, 16x16 num of blocks)
 * start at (0,0)
 * 1st set holds 160 cells - 10 blocks vertical, 16 horizontal
 * => 1st process lines = 80
 * we're left with 128-80=48 lines (6 blocks vertical)
 * => 2nd process lines = 48
 * last process lines to cover the image - image_height - 128
 *
 * --> init
 * pl (0) first
 * pl (1) last-in-grid
 * --> ack (0)
 * rmd (0)
 * pl (2) after-grid
 * --> ack (1)
 * rmd (1) eof
 * --> ack (2)
 * do nothing
 */
struct process_lines {
        unsigned int image_height;
        unsigned short grid_height;
        unsigned short block_height;
        unsigned short y_start;
        unsigned char grid_height_per_slice;

        unsigned short max_op; /* max operation */
        unsigned short max_tr; /* max transaction */
        unsigned char acc_enable;
};

/* Helper to config intra_frame_operations_data. */
static int
imgu_css_acc_process_lines(const struct process_lines *pl,
                           struct imgu_abi_acc_operation *p_op,
                           struct imgu_abi_acc_process_lines_cmd_data *p_pl,
                           struct imgu_abi_acc_transfer_op_data *p_tr)
{
        unsigned short op_idx = 0, pl_idx = 0, tr_idx = 0;
        unsigned char tr_set_num = 0, pl_cfg_set = 0;
        const unsigned short grid_last_line =
                        pl->y_start + pl->grid_height * pl->block_height;
        const unsigned short process_lines =
                        pl->grid_height_per_slice * pl->block_height;

        unsigned int process_lines_after_grid;
        unsigned short first_process_lines;
        unsigned short last_process_lines_in_grid;

        unsigned short num_of_process_lines;
        unsigned short num_of_sets;

        if (pl->grid_height_per_slice == 0)
                return -EINVAL;

        if (pl->acc_enable && grid_last_line > pl->image_height)
                return -EINVAL;

        num_of_sets = pl->grid_height / pl->grid_height_per_slice;
        if (num_of_sets * pl->grid_height_per_slice < pl->grid_height)
                num_of_sets++;

        /* Account for two line delay inside the FF */
        if (pl->max_op == IMGU_ABI_AF_MAX_OPERATIONS) {
                first_process_lines = process_lines + pl->y_start + 2;
                last_process_lines_in_grid =
                        (grid_last_line - first_process_lines) -
                        ((num_of_sets - 2) * process_lines) + 4;
                process_lines_after_grid =
                        pl->image_height - grid_last_line - 4;
        } else {
                first_process_lines = process_lines + pl->y_start;
                last_process_lines_in_grid =
                        (grid_last_line - first_process_lines) -
                        ((num_of_sets - 2) * process_lines);
                process_lines_after_grid = pl->image_height - grid_last_line;
        }

        num_of_process_lines = num_of_sets;
        if (process_lines_after_grid > 0)
                num_of_process_lines++;

        while (tr_idx < num_of_sets || pl_idx < num_of_process_lines) {
                /* Read meta-data */
                if (pl_idx >= 2 || (pl_idx == 1 && num_of_sets == 1)) {
                        if (op_idx >= pl->max_op || tr_idx >= pl->max_tr)
                                return -EINVAL;

                        p_op[op_idx].op_type =
                                IMGU_ABI_ACC_OPTYPE_TRANSFER_DATA;

                        if (tr_idx == num_of_sets - 1)
                                /* The last operation is always a tr */
                                p_op[op_idx].op_indicator =
                                        IMGU_ABI_ACC_OP_END_OF_OPS;
                        else if (tr_idx == num_of_sets - 2)
                                if (process_lines_after_grid == 0)
                                        /*
                                         * No additional pl op left -
                                         * this op is left as lats of cycle
                                         */
                                        p_op[op_idx].op_indicator =
                                                IMGU_ABI_ACC_OP_END_OF_ACK;
                                else
                                        /*
                                         * We still have to process-lines after
                                         * the grid so have one more pl op
                                         */
                                        p_op[op_idx].op_indicator =
                                                IMGU_ABI_ACC_OP_IDLE;
                        else
                                /* Default - usually there's a pl after a tr */
                                p_op[op_idx].op_indicator =
                                        IMGU_ABI_ACC_OP_IDLE;

                        op_idx++;
                        if (p_tr) {
                                p_tr[tr_idx].set_number = tr_set_num;
                                tr_set_num = 1 - tr_set_num;
                        }
                        tr_idx++;
                }

                /* process_lines */
                if (pl_idx < num_of_process_lines) {
                        if (op_idx >= pl->max_op || pl_idx >= pl->max_tr)
                                return -EINVAL;

                        p_op[op_idx].op_type =
                                IMGU_ABI_ACC_OPTYPE_PROCESS_LINES;
                        if (pl_idx == 0)
                                if (num_of_process_lines == 1)
                                        /* Only one pl op */
                                        p_op[op_idx].op_indicator =
                                                IMGU_ABI_ACC_OP_END_OF_ACK;
                                else
                                        /* On init - do two pl ops */
                                        p_op[op_idx].op_indicator =
                                                IMGU_ABI_ACC_OP_IDLE;
                        else
                                /* Usually pl is the end of the ack cycle */
                                p_op[op_idx].op_indicator =
                                        IMGU_ABI_ACC_OP_END_OF_ACK;

                        op_idx++;

                        if (pl_idx == 0)
                                /* First process line */
                                p_pl[pl_idx].lines = first_process_lines;
                        else if (pl_idx == num_of_sets - 1)
                                /* Last in grid */
                                p_pl[pl_idx].lines = last_process_lines_in_grid;
                        else if (pl_idx == num_of_process_lines - 1)
                                /* After the grid */
                                p_pl[pl_idx].lines = process_lines_after_grid;
                        else
                                /* Inside the grid */
                                p_pl[pl_idx].lines = process_lines;

                        if (p_tr) {
                                p_pl[pl_idx].cfg_set = pl_cfg_set;
                                pl_cfg_set = 1 - pl_cfg_set;
                        }
                        pl_idx++;
                }
        }

        return 0;
}

static int imgu_css_af_ops_calc(struct imgu_css *css, unsigned int pipe,
                                struct imgu_abi_af_config *af_config)
{
        struct imgu_abi_af_intra_frame_operations_data *to =
                &af_config->operations_data;
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];
        struct imgu_fw_info *bi =
                &css->fwp->binary_header[css_pipe->bindex];

        struct process_lines pl = {
                .image_height = css_pipe->rect[IPU3_CSS_RECT_BDS].height,
                .grid_height = af_config->config.grid_cfg.height,
                .block_height =
                        1 << af_config->config.grid_cfg.block_height_log2,
                .y_start = af_config->config.grid_cfg.y_start &
                        IPU3_UAPI_GRID_START_MASK,
                .grid_height_per_slice =
                        af_config->stripes[0].grid_cfg.height_per_slice,
                .max_op = IMGU_ABI_AF_MAX_OPERATIONS,
                .max_tr = IMGU_ABI_AF_MAX_TRANSFERS,
                .acc_enable = bi->info.isp.sp.enable.af,
        };

        return imgu_css_acc_process_lines(&pl, to->ops, to->process_lines_data,
                                          NULL);
}

static int
imgu_css_awb_fr_ops_calc(struct imgu_css *css, unsigned int pipe,
                         struct imgu_abi_awb_fr_config *awb_fr_config)
{
        struct imgu_abi_awb_fr_intra_frame_operations_data *to =
                &awb_fr_config->operations_data;
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];
        struct imgu_fw_info *bi =
                &css->fwp->binary_header[css_pipe->bindex];
        struct process_lines pl = {
                .image_height = css_pipe->rect[IPU3_CSS_RECT_BDS].height,
                .grid_height = awb_fr_config->config.grid_cfg.height,
                .block_height =
                        1 << awb_fr_config->config.grid_cfg.block_height_log2,
                .y_start = awb_fr_config->config.grid_cfg.y_start &
                        IPU3_UAPI_GRID_START_MASK,
                .grid_height_per_slice =
                        awb_fr_config->stripes[0].grid_cfg.height_per_slice,
                .max_op = IMGU_ABI_AWB_FR_MAX_OPERATIONS,
                .max_tr = IMGU_ABI_AWB_FR_MAX_PROCESS_LINES,
                .acc_enable = bi->info.isp.sp.enable.awb_fr_acc,
        };

        return imgu_css_acc_process_lines(&pl, to->ops, to->process_lines_data,
                                          NULL);
}

static int imgu_css_awb_ops_calc(struct imgu_css *css, unsigned int pipe,
                                 struct imgu_abi_awb_config *awb_config)
{
        struct imgu_abi_awb_intra_frame_operations_data *to =
                &awb_config->operations_data;
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];
        struct imgu_fw_info *bi =
                &css->fwp->binary_header[css_pipe->bindex];

        struct process_lines pl = {
                .image_height = css_pipe->rect[IPU3_CSS_RECT_BDS].height,
                .grid_height = awb_config->config.grid.height,
                .block_height =
                        1 << awb_config->config.grid.block_height_log2,
                .y_start = awb_config->config.grid.y_start,
                .grid_height_per_slice =
                        awb_config->stripes[0].grid.height_per_slice,
                .max_op = IMGU_ABI_AWB_MAX_OPERATIONS,
                .max_tr = IMGU_ABI_AWB_MAX_TRANSFERS,
                .acc_enable = bi->info.isp.sp.enable.awb_acc,
        };

        return imgu_css_acc_process_lines(&pl, to->ops, to->process_lines_data,
                                          to->transfer_data);
}

static u16 imgu_css_grid_end(u16 start, u8 width, u8 block_width_log2)
{
        return (start & IPU3_UAPI_GRID_START_MASK) +
                (width << block_width_log2) - 1;
}

static void imgu_css_grid_end_calc(struct ipu3_uapi_grid_config *grid_cfg)
{
        grid_cfg->x_end = imgu_css_grid_end(grid_cfg->x_start, grid_cfg->width,
                                            grid_cfg->block_width_log2);
        grid_cfg->y_end = imgu_css_grid_end(grid_cfg->y_start, grid_cfg->height,
                                            grid_cfg->block_height_log2);
}

/****************** config computation *****************************/

static int imgu_css_cfg_acc_stripe(struct imgu_css *css, unsigned int pipe,
                                   struct imgu_abi_acc_param *acc)
{
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];
        const struct imgu_fw_info *bi =
                &css->fwp->binary_header[css_pipe->bindex];
        struct imgu_css_scaler_info scaler_luma, scaler_chroma;
        const unsigned int stripes = bi->info.isp.sp.iterator.num_stripes;
        const unsigned int f = IPU3_UAPI_ISP_VEC_ELEMS * 2;
        unsigned int bds_ds, i;

        memset(acc, 0, sizeof(*acc));

        /* acc_param: osys_config */

        if (imgu_css_osys_calc(css, pipe, stripes, &acc->osys, &scaler_luma,
                               &scaler_chroma, acc->stripe.block_stripes))
                return -EINVAL;

        /* acc_param: stripe data */

        /*
         * For the striped case the approach is as follows:
         * 1. down-scaled stripes are calculated - with 128 overlap
         *    (this is the main limiter therefore it's first)
         * 2. input stripes are derived by up-scaling the down-scaled stripes
         *    (there are no alignment requirements on input stripes)
         * 3. output stripes are derived from down-scaled stripes too
         */

        acc->stripe.num_of_stripes = stripes;
        acc->stripe.input_frame.width =
                css_pipe->queue[IPU3_CSS_QUEUE_IN].fmt.mpix.width;
        acc->stripe.input_frame.height =
                css_pipe->queue[IPU3_CSS_QUEUE_IN].fmt.mpix.height;
        acc->stripe.input_frame.bayer_order =
                css_pipe->queue[IPU3_CSS_QUEUE_IN].css_fmt->bayer_order;

        for (i = 0; i < stripes; i++)
                acc->stripe.bds_out_stripes[i].height =
                                        css_pipe->rect[IPU3_CSS_RECT_BDS].height;
        acc->stripe.bds_out_stripes[0].offset = 0;
        if (stripes <= 1) {
                acc->stripe.bds_out_stripes[0].width =
                        ALIGN(css_pipe->rect[IPU3_CSS_RECT_BDS].width, f);
        } else {
                /* Image processing is divided into two stripes */
                acc->stripe.bds_out_stripes[0].width =
                        acc->stripe.bds_out_stripes[1].width =
                        (css_pipe->rect[IPU3_CSS_RECT_BDS].width / 2 & ~(f - 1)) + f;
                /*
                 * Sum of width of the two stripes should not be smaller
                 * than output width and must be even times of overlapping
                 * unit f.
                 */
                if ((css_pipe->rect[IPU3_CSS_RECT_BDS].width / f & 1) !=
                    !!(css_pipe->rect[IPU3_CSS_RECT_BDS].width & (f - 1)))
                        acc->stripe.bds_out_stripes[0].width += f;
                if ((css_pipe->rect[IPU3_CSS_RECT_BDS].width / f & 1) &&
                    (css_pipe->rect[IPU3_CSS_RECT_BDS].width & (f - 1))) {
                        acc->stripe.bds_out_stripes[0].width += f;
                        acc->stripe.bds_out_stripes[1].width += f;
                }
                /* Overlap between stripes is IPU3_UAPI_ISP_VEC_ELEMS * 4 */
                acc->stripe.bds_out_stripes[1].offset =
                        acc->stripe.bds_out_stripes[0].width - 2 * f;
        }

        acc->stripe.effective_stripes[0].height =
                                css_pipe->rect[IPU3_CSS_RECT_EFFECTIVE].height;
        acc->stripe.effective_stripes[0].offset = 0;
        acc->stripe.bds_out_stripes_no_overlap[0].height =
                                css_pipe->rect[IPU3_CSS_RECT_BDS].height;
        acc->stripe.bds_out_stripes_no_overlap[0].offset = 0;
        acc->stripe.output_stripes[0].height =
                                css_pipe->queue[IPU3_CSS_QUEUE_OUT].fmt.mpix.height;
        acc->stripe.output_stripes[0].offset = 0;
        if (stripes <= 1) {
                acc->stripe.down_scaled_stripes[0].width =
                                css_pipe->rect[IPU3_CSS_RECT_BDS].width;
                acc->stripe.down_scaled_stripes[0].height =
                                css_pipe->rect[IPU3_CSS_RECT_BDS].height;
                acc->stripe.down_scaled_stripes[0].offset = 0;

                acc->stripe.effective_stripes[0].width =
                                css_pipe->rect[IPU3_CSS_RECT_EFFECTIVE].width;
                acc->stripe.bds_out_stripes_no_overlap[0].width =
                        ALIGN(css_pipe->rect[IPU3_CSS_RECT_BDS].width, f);

                acc->stripe.output_stripes[0].width =
                        css_pipe->queue[IPU3_CSS_QUEUE_OUT].fmt.mpix.width;
        } else { /* Two stripes */
                bds_ds = css_pipe->rect[IPU3_CSS_RECT_EFFECTIVE].width *
                                IMGU_BDS_GRANULARITY /
                                css_pipe->rect[IPU3_CSS_RECT_BDS].width;

                acc->stripe.down_scaled_stripes[0] =
                        acc->stripe.bds_out_stripes[0];
                acc->stripe.down_scaled_stripes[1] =
                        acc->stripe.bds_out_stripes[1];
                if (!IS_ALIGNED(css_pipe->rect[IPU3_CSS_RECT_BDS].width, f))
                        acc->stripe.down_scaled_stripes[1].width +=
                                (css_pipe->rect[IPU3_CSS_RECT_BDS].width
                                & (f - 1)) - f;

                acc->stripe.effective_stripes[0].width = bds_ds *
                        acc->stripe.down_scaled_stripes[0].width /
                        IMGU_BDS_GRANULARITY;
                acc->stripe.effective_stripes[1].width = bds_ds *
                        acc->stripe.down_scaled_stripes[1].width /
                        IMGU_BDS_GRANULARITY;
                acc->stripe.effective_stripes[1].height =
                        css_pipe->rect[IPU3_CSS_RECT_EFFECTIVE].height;
                acc->stripe.effective_stripes[1].offset = bds_ds *
                        acc->stripe.down_scaled_stripes[1].offset /
                        IMGU_BDS_GRANULARITY;

                acc->stripe.bds_out_stripes_no_overlap[0].width =
                acc->stripe.bds_out_stripes_no_overlap[1].offset =
                        ALIGN(css_pipe->rect[IPU3_CSS_RECT_BDS].width, 2 * f) / 2;
                acc->stripe.bds_out_stripes_no_overlap[1].width =
                        DIV_ROUND_UP(css_pipe->rect[IPU3_CSS_RECT_BDS].width, f)
                        / 2 * f;
                acc->stripe.bds_out_stripes_no_overlap[1].height =
                        css_pipe->rect[IPU3_CSS_RECT_BDS].height;

                acc->stripe.output_stripes[0].width =
                        acc->stripe.down_scaled_stripes[0].width - f;
                acc->stripe.output_stripes[1].width =
                        acc->stripe.down_scaled_stripes[1].width - f;
                acc->stripe.output_stripes[1].height =
                        css_pipe->queue[IPU3_CSS_QUEUE_OUT].fmt.mpix.height;
                acc->stripe.output_stripes[1].offset =
                        acc->stripe.output_stripes[0].width;
        }

        acc->stripe.output_system_in_frame_width =
                css_pipe->rect[IPU3_CSS_RECT_GDC].width;
        acc->stripe.output_system_in_frame_height =
                css_pipe->rect[IPU3_CSS_RECT_GDC].height;

        acc->stripe.effective_frame_width =
                                css_pipe->rect[IPU3_CSS_RECT_EFFECTIVE].width;
        acc->stripe.bds_frame_width = css_pipe->rect[IPU3_CSS_RECT_BDS].width;
        acc->stripe.out_frame_width =
                css_pipe->queue[IPU3_CSS_QUEUE_OUT].fmt.mpix.width;
        acc->stripe.out_frame_height =
                css_pipe->queue[IPU3_CSS_QUEUE_OUT].fmt.mpix.height;
        acc->stripe.gdc_in_buffer_width =
                css_pipe->aux_frames[IPU3_CSS_AUX_FRAME_REF].bytesperline /
                css_pipe->aux_frames[IPU3_CSS_AUX_FRAME_REF].bytesperpixel;
        acc->stripe.gdc_in_buffer_height =
                css_pipe->aux_frames[IPU3_CSS_AUX_FRAME_REF].height;
        acc->stripe.gdc_in_buffer_offset_x = IMGU_GDC_BUF_X;
        acc->stripe.gdc_in_buffer_offset_y = IMGU_GDC_BUF_Y;
        acc->stripe.display_frame_width =
                css_pipe->queue[IPU3_CSS_QUEUE_VF].fmt.mpix.width;
        acc->stripe.display_frame_height =
                css_pipe->queue[IPU3_CSS_QUEUE_VF].fmt.mpix.height;
        acc->stripe.bds_aligned_frame_width =
                roundup(css_pipe->rect[IPU3_CSS_RECT_BDS].width,
                        2 * IPU3_UAPI_ISP_VEC_ELEMS);

        if (stripes > 1)
                acc->stripe.half_overlap_vectors =
                        IMGU_STRIPE_FIXED_HALF_OVERLAP;
        else
                acc->stripe.half_overlap_vectors = 0;

        return 0;
}

static void imgu_css_cfg_acc_dvs(struct imgu_css *css,
                                 struct imgu_abi_acc_param *acc,
                                 unsigned int pipe)
{
        unsigned int i;
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];

        /* Disable DVS statistics */
        acc->dvs_stat.operations_data.process_lines_data[0].lines =
                                css_pipe->rect[IPU3_CSS_RECT_BDS].height;
        acc->dvs_stat.operations_data.process_lines_data[0].cfg_set = 0;
        acc->dvs_stat.operations_data.ops[0].op_type =
                IMGU_ABI_ACC_OPTYPE_PROCESS_LINES;
        acc->dvs_stat.operations_data.ops[0].op_indicator =
                IMGU_ABI_ACC_OP_NO_OPS;
        for (i = 0; i < IMGU_ABI_DVS_STAT_LEVELS; i++)
                acc->dvs_stat.cfg.grd_config[i].enable = 0;
}

static void acc_bds_per_stripe_data(struct imgu_css *css,
                                    struct imgu_abi_acc_param *acc,
                                    const int i, unsigned int pipe)
{
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];

        acc->bds.per_stripe.aligned_data[i].data.crop.hor_crop_en = 0;
        acc->bds.per_stripe.aligned_data[i].data.crop.hor_crop_start = 0;
        acc->bds.per_stripe.aligned_data[i].data.crop.hor_crop_end = 0;
        acc->bds.per_stripe.aligned_data[i].data.hor_ctrl0 =
                acc->bds.hor.hor_ctrl0;
        acc->bds.per_stripe.aligned_data[i].data.hor_ctrl0.out_frame_width =
                acc->stripe.down_scaled_stripes[i].width;
        acc->bds.per_stripe.aligned_data[i].data.ver_ctrl1.out_frame_width =
                acc->stripe.down_scaled_stripes[i].width;
        acc->bds.per_stripe.aligned_data[i].data.ver_ctrl1.out_frame_height =
                css_pipe->rect[IPU3_CSS_RECT_BDS].height;
}

/*
 * Configure `acc' parameters. `acc_old' contains the old values (or is NULL)
 * and `acc_user' contains new prospective values. `use' contains flags
 * telling which fields to take from the old values (or generate if it is NULL)
 * and which to take from the new user values.
 */
int imgu_css_cfg_acc(struct imgu_css *css, unsigned int pipe,
                     struct ipu3_uapi_flags *use,
                     struct imgu_abi_acc_param *acc,
                     struct imgu_abi_acc_param *acc_old,
                     struct ipu3_uapi_acc_param *acc_user)
{
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];
        const struct imgu_fw_info *bi =
                &css->fwp->binary_header[css_pipe->bindex];
        const unsigned int stripes = bi->info.isp.sp.iterator.num_stripes;
        const unsigned int tnr_frame_width =
                acc->stripe.bds_aligned_frame_width;
        const unsigned int min_overlap = 10;
        const struct v4l2_pix_format_mplane *pixm =
                &css_pipe->queue[IPU3_CSS_QUEUE_IN].fmt.mpix;
        const struct imgu_css_bds_config *cfg_bds;
        struct imgu_abi_input_feeder_data *feeder_data;

        unsigned int bds_ds, ofs_x, ofs_y, i, width, height;
        u8 b_w_log2; /* Block width log2 */

        /* Update stripe using chroma and luma */

        if (imgu_css_cfg_acc_stripe(css, pipe, acc))
                return -EINVAL;

        /* acc_param: input_feeder_config */

        ofs_x = ((pixm->width -
                  css_pipe->rect[IPU3_CSS_RECT_EFFECTIVE].width) >> 1) & ~1;
        ofs_x += css_pipe->queue[IPU3_CSS_QUEUE_IN].css_fmt->bayer_order ==
                IMGU_ABI_BAYER_ORDER_RGGB ||
                css_pipe->queue[IPU3_CSS_QUEUE_IN].css_fmt->bayer_order ==
                IMGU_ABI_BAYER_ORDER_GBRG ? 1 : 0;
        ofs_y = ((pixm->height -
                  css_pipe->rect[IPU3_CSS_RECT_EFFECTIVE].height) >> 1) & ~1;
        ofs_y += css_pipe->queue[IPU3_CSS_QUEUE_IN].css_fmt->bayer_order ==
                IMGU_ABI_BAYER_ORDER_BGGR ||
                css_pipe->queue[IPU3_CSS_QUEUE_IN].css_fmt->bayer_order ==
                IMGU_ABI_BAYER_ORDER_GBRG ? 1 : 0;
        acc->input_feeder.data.row_stride = pixm->plane_fmt[0].bytesperline;
        acc->input_feeder.data.start_row_address =
                ofs_x / IMGU_PIXELS_PER_WORD * IMGU_BYTES_PER_WORD +
                ofs_y * acc->input_feeder.data.row_stride;
        acc->input_feeder.data.start_pixel = ofs_x % IMGU_PIXELS_PER_WORD;

        acc->input_feeder.data_per_stripe.input_feeder_data[0].data =
                acc->input_feeder.data;

        ofs_x += acc->stripe.effective_stripes[1].offset;

        feeder_data =
                &acc->input_feeder.data_per_stripe.input_feeder_data[1].data;
        feeder_data->row_stride = acc->input_feeder.data.row_stride;
        feeder_data->start_row_address =

                ofs_x / IMGU_PIXELS_PER_WORD * IMGU_BYTES_PER_WORD +
                ofs_y * acc->input_feeder.data.row_stride;
        feeder_data->start_pixel = ofs_x % IMGU_PIXELS_PER_WORD;

        /* acc_param: bnr_static_config */

        /*
         * Originate from user or be the original default values if user has
         * never set them before, when user gives a new set of parameters,
         * for each chunk in the parameter structure there is a flag use->xxx
         * whether to use the user-provided parameter or not. If not, the
         * parameter remains unchanged in the driver:
         * it's value is taken from acc_old.
         */
        if (use && use->acc_bnr) {
                /* Take values from user */
                acc->bnr = acc_user->bnr;
        } else if (acc_old) {
                /* Use old value */
                acc->bnr = acc_old->bnr;
        } else {
                /* Calculate from scratch */
                acc->bnr = imgu_css_bnr_defaults;
        }

        acc->bnr.column_size = tnr_frame_width;

        /* acc_param: bnr_static_config_green_disparity */

        if (use && use->acc_green_disparity) {
                /* Take values from user */
                acc->green_disparity = acc_user->green_disparity;
        } else if (acc_old) {
                /* Use old value */
                acc->green_disparity = acc_old->green_disparity;
        } else {
                /* Calculate from scratch */
                memset(&acc->green_disparity, 0, sizeof(acc->green_disparity));
        }

        /* acc_param: dm_config */

        if (use && use->acc_dm) {
                /* Take values from user */
                acc->dm = acc_user->dm;
        } else if (acc_old) {
                /* Use old value */
                acc->dm = acc_old->dm;
        } else {
                /* Calculate from scratch */
                acc->dm = imgu_css_dm_defaults;
        }

        acc->dm.frame_width = tnr_frame_width;

        /* acc_param: ccm_mat_config */

        if (use && use->acc_ccm) {
                /* Take values from user */
                acc->ccm = acc_user->ccm;
        } else if (acc_old) {
                /* Use old value */
                acc->ccm = acc_old->ccm;
        } else {
                /* Calculate from scratch */
                acc->ccm = imgu_css_ccm_defaults;
        }

        /* acc_param: gamma_config */

        if (use && use->acc_gamma) {
                /* Take values from user */
                acc->gamma = acc_user->gamma;
        } else if (acc_old) {
                /* Use old value */
                acc->gamma = acc_old->gamma;
        } else {
                /* Calculate from scratch */
                acc->gamma.gc_ctrl.enable = 1;
                acc->gamma.gc_lut = imgu_css_gamma_lut;
        }

        /* acc_param: csc_mat_config */

        if (use && use->acc_csc) {
                /* Take values from user */
                acc->csc = acc_user->csc;
        } else if (acc_old) {
                /* Use old value */
                acc->csc = acc_old->csc;
        } else {
                /* Calculate from scratch */
                acc->csc = imgu_css_csc_defaults;
        }

        /* acc_param: cds_params */

        if (use && use->acc_cds) {
                /* Take values from user */
                acc->cds = acc_user->cds;
        } else if (acc_old) {
                /* Use old value */
                acc->cds = acc_old->cds;
        } else {
                /* Calculate from scratch */
                acc->cds = imgu_css_cds_defaults;
        }

        /* acc_param: shd_config */

        if (use && use->acc_shd) {
                /* Take values from user */
                acc->shd.shd = acc_user->shd.shd;
                acc->shd.shd_lut = acc_user->shd.shd_lut;
        } else if (acc_old) {
                /* Use old value */
                acc->shd.shd = acc_old->shd.shd;
                acc->shd.shd_lut = acc_old->shd.shd_lut;
        } else {
                /* Calculate from scratch */
                acc->shd.shd = imgu_css_shd_defaults;
                memset(&acc->shd.shd_lut, 0, sizeof(acc->shd.shd_lut));
        }

        if (acc->shd.shd.grid.width <= 0)
                return -EINVAL;

        acc->shd.shd.grid.grid_height_per_slice =
                IMGU_ABI_SHD_MAX_CELLS_PER_SET / acc->shd.shd.grid.width;

        if (acc->shd.shd.grid.grid_height_per_slice <= 0)
                return -EINVAL;

        acc->shd.shd.general.init_set_vrt_offst_ul =
                                (-acc->shd.shd.grid.y_start >>
                                 acc->shd.shd.grid.block_height_log2) %
                                acc->shd.shd.grid.grid_height_per_slice;

        if (imgu_css_shd_ops_calc(&acc->shd.shd_ops, &acc->shd.shd.grid,
                                  css_pipe->rect[IPU3_CSS_RECT_BDS].height))
                return -EINVAL;

        /* acc_param: dvs_stat_config */
        imgu_css_cfg_acc_dvs(css, acc, pipe);

        /* acc_param: yuvp1_iefd_config */

        if (use && use->acc_iefd) {
                /* Take values from user */
                acc->iefd = acc_user->iefd;
        } else if (acc_old) {
                /* Use old value */
                acc->iefd = acc_old->iefd;
        } else {
                /* Calculate from scratch */
                acc->iefd = imgu_css_iefd_defaults;
        }

        /* acc_param: yuvp1_yds_config yds_c0 */

        if (use && use->acc_yds_c0) {
                /* Take values from user */
                acc->yds_c0 = acc_user->yds_c0;
        } else if (acc_old) {
                /* Use old value */
                acc->yds_c0 = acc_old->yds_c0;
        } else {
                /* Calculate from scratch */
                acc->yds_c0 = imgu_css_yds_defaults;
        }

        /* acc_param: yuvp1_chnr_config chnr_c0 */

        if (use && use->acc_chnr_c0) {
                /* Take values from user */
                acc->chnr_c0 = acc_user->chnr_c0;
        } else if (acc_old) {
                /* Use old value */
                acc->chnr_c0 = acc_old->chnr_c0;
        } else {
                /* Calculate from scratch */
                acc->chnr_c0 = imgu_css_chnr_defaults;
        }

        /* acc_param: yuvp1_y_ee_nr_config */

        if (use && use->acc_y_ee_nr) {
                /* Take values from user */
                acc->y_ee_nr = acc_user->y_ee_nr;
        } else if (acc_old) {
                /* Use old value */
                acc->y_ee_nr = acc_old->y_ee_nr;
        } else {
                /* Calculate from scratch */
                acc->y_ee_nr = imgu_css_y_ee_nr_defaults;
        }

        /* acc_param: yuvp1_yds_config yds */

        if (use && use->acc_yds) {
                /* Take values from user */
                acc->yds = acc_user->yds;
        } else if (acc_old) {
                /* Use old value */
                acc->yds = acc_old->yds;
        } else {
                /* Calculate from scratch */
                acc->yds = imgu_css_yds_defaults;
        }

        /* acc_param: yuvp1_chnr_config chnr */

        if (use && use->acc_chnr) {
                /* Take values from user */
                acc->chnr = acc_user->chnr;
        } else if (acc_old) {
                /* Use old value */
                acc->chnr = acc_old->chnr;
        } else {
                /* Calculate from scratch */
                acc->chnr = imgu_css_chnr_defaults;
        }

        /* acc_param: yuvp2_y_tm_lut_static_config */

        for (i = 0; i < IMGU_ABI_YUVP2_YTM_LUT_ENTRIES; i++)
                acc->ytm.entries[i] = i * 32;
        acc->ytm.enable = 0;    /* Always disabled on IPU3 */

        /* acc_param: yuvp1_yds_config yds2 */

        if (use && use->acc_yds2) {
                /* Take values from user */
                acc->yds2 = acc_user->yds2;
        } else if (acc_old) {
                /* Use old value */
                acc->yds2 = acc_old->yds2;
        } else {
                /* Calculate from scratch */
                acc->yds2 = imgu_css_yds_defaults;
        }

        /* acc_param: yuvp2_tcc_static_config */

        if (use && use->acc_tcc) {
                /* Take values from user */
                acc->tcc = acc_user->tcc;
        } else if (acc_old) {
                /* Use old value */
                acc->tcc = acc_old->tcc;
        } else {
                /* Calculate from scratch */
                memset(&acc->tcc, 0, sizeof(acc->tcc));

                acc->tcc.gen_control.en = 1;
                acc->tcc.gen_control.blend_shift = 3;
                acc->tcc.gen_control.gain_according_to_y_only = 1;
                acc->tcc.gen_control.gamma = 8;
                acc->tcc.gen_control.delta = 0;

                for (i = 0; i < IPU3_UAPI_YUVP2_TCC_MACC_TABLE_ELEMENTS; i++) {
                        acc->tcc.macc_table.entries[i].a = 1024;
                        acc->tcc.macc_table.entries[i].b = 0;
                        acc->tcc.macc_table.entries[i].c = 0;
                        acc->tcc.macc_table.entries[i].d = 1024;
                }

                acc->tcc.inv_y_lut.entries[6] = 1023;
                for (i = 7; i < IPU3_UAPI_YUVP2_TCC_INV_Y_LUT_ELEMENTS; i++)
                        acc->tcc.inv_y_lut.entries[i] = 1024 >> (i - 6);

                acc->tcc.gain_pcwl = imgu_css_tcc_gain_pcwl_lut;
                acc->tcc.r_sqr_lut = imgu_css_tcc_r_sqr_lut;
        }

        /* acc_param: dpc_config */

        if (use && use->acc_dpc)
                return -EINVAL; /* Not supported yet */

        /* Just disable by default */
        memset(&acc->dpc, 0, sizeof(acc->dpc));

        /* acc_param: bds_config */

        bds_ds = (css_pipe->rect[IPU3_CSS_RECT_EFFECTIVE].height *
                  IMGU_BDS_GRANULARITY) / css_pipe->rect[IPU3_CSS_RECT_BDS].height;
        if (bds_ds < IMGU_BDS_MIN_SF_INV ||
            bds_ds - IMGU_BDS_MIN_SF_INV >= ARRAY_SIZE(imgu_css_bds_configs))
                return -EINVAL;

        cfg_bds = &imgu_css_bds_configs[bds_ds - IMGU_BDS_MIN_SF_INV];
        acc->bds.hor.hor_ctrl1.hor_crop_en = 0;
        acc->bds.hor.hor_ctrl1.hor_crop_start = 0;
        acc->bds.hor.hor_ctrl1.hor_crop_end = 0;
        acc->bds.hor.hor_ctrl0.sample_patrn_length =
                                cfg_bds->sample_patrn_length;
        acc->bds.hor.hor_ctrl0.hor_ds_en = cfg_bds->hor_ds_en;
        acc->bds.hor.hor_ctrl0.min_clip_val = IMGU_BDS_MIN_CLIP_VAL;
        acc->bds.hor.hor_ctrl0.max_clip_val = IMGU_BDS_MAX_CLIP_VAL;
        acc->bds.hor.hor_ctrl0.out_frame_width =
                                css_pipe->rect[IPU3_CSS_RECT_BDS].width;
        acc->bds.hor.hor_ptrn_arr = cfg_bds->ptrn_arr;
        acc->bds.hor.hor_phase_arr = cfg_bds->hor_phase_arr;
        acc->bds.hor.hor_ctrl2.input_frame_height =
                                css_pipe->rect[IPU3_CSS_RECT_EFFECTIVE].height;
        acc->bds.ver.ver_ctrl0.min_clip_val = IMGU_BDS_MIN_CLIP_VAL;
        acc->bds.ver.ver_ctrl0.max_clip_val = IMGU_BDS_MAX_CLIP_VAL;
        acc->bds.ver.ver_ctrl0.sample_patrn_length =
                                cfg_bds->sample_patrn_length;
        acc->bds.ver.ver_ctrl0.ver_ds_en = cfg_bds->ver_ds_en;
        acc->bds.ver.ver_ptrn_arr = cfg_bds->ptrn_arr;
        acc->bds.ver.ver_phase_arr = cfg_bds->ver_phase_arr;
        acc->bds.ver.ver_ctrl1.out_frame_width =
                                css_pipe->rect[IPU3_CSS_RECT_BDS].width;
        acc->bds.ver.ver_ctrl1.out_frame_height =
                                css_pipe->rect[IPU3_CSS_RECT_BDS].height;
        for (i = 0; i < stripes; i++)
                acc_bds_per_stripe_data(css, acc, i, pipe);

        acc->bds.enabled = cfg_bds->hor_ds_en || cfg_bds->ver_ds_en;

        /* acc_param: anr_config */

        if (use && use->acc_anr) {
                /* Take values from user */
                acc->anr.transform = acc_user->anr.transform;
                acc->anr.stitch.anr_stitch_en =
                        acc_user->anr.stitch.anr_stitch_en;
                memcpy(acc->anr.stitch.pyramid, acc_user->anr.stitch.pyramid,
                       sizeof(acc->anr.stitch.pyramid));
        } else if (acc_old) {
                /* Use old value */
                acc->anr.transform = acc_old->anr.transform;
                acc->anr.stitch.anr_stitch_en =
                        acc_old->anr.stitch.anr_stitch_en;
                memcpy(acc->anr.stitch.pyramid, acc_old->anr.stitch.pyramid,
                       sizeof(acc->anr.stitch.pyramid));
        } else {
                /* Calculate from scratch */
                acc->anr = imgu_css_anr_defaults;
        }

        /* Always enabled */
        acc->anr.search.enable = 1;
        acc->anr.transform.enable = 1;
        acc->anr.tile2strm.enable = 1;
        acc->anr.tile2strm.frame_width =
                ALIGN(css_pipe->rect[IPU3_CSS_RECT_BDS].width, IMGU_ISP_VMEM_ALIGN);
        acc->anr.search.frame_width = acc->anr.tile2strm.frame_width;
        acc->anr.stitch.frame_width = acc->anr.tile2strm.frame_width;
        acc->anr.tile2strm.frame_height = css_pipe->rect[IPU3_CSS_RECT_BDS].height;
        acc->anr.search.frame_height = acc->anr.tile2strm.frame_height;
        acc->anr.stitch.frame_height = acc->anr.tile2strm.frame_height;

        width = ALIGN(css_pipe->rect[IPU3_CSS_RECT_BDS].width, IMGU_ISP_VMEM_ALIGN);
        height = css_pipe->rect[IPU3_CSS_RECT_BDS].height;

        if (acc->anr.transform.xreset + width > IPU3_UAPI_ANR_MAX_RESET)
                acc->anr.transform.xreset = IPU3_UAPI_ANR_MAX_RESET - width;
        if (acc->anr.transform.xreset < IPU3_UAPI_ANR_MIN_RESET)
                acc->anr.transform.xreset = IPU3_UAPI_ANR_MIN_RESET;

        if (acc->anr.transform.yreset + height > IPU3_UAPI_ANR_MAX_RESET)
                acc->anr.transform.yreset = IPU3_UAPI_ANR_MAX_RESET - height;
        if (acc->anr.transform.yreset < IPU3_UAPI_ANR_MIN_RESET)
                acc->anr.transform.yreset = IPU3_UAPI_ANR_MIN_RESET;

        /* acc_param: awb_fr_config */

        if (use && use->acc_awb_fr) {
                /* Take values from user */
                acc->awb_fr.config = acc_user->awb_fr;
        } else if (acc_old) {
                /* Use old value */
                acc->awb_fr.config = acc_old->awb_fr.config;
        } else {
                /* Set from scratch */
                acc->awb_fr.config = imgu_css_awb_fr_defaults;
        }

        imgu_css_grid_end_calc(&acc->awb_fr.config.grid_cfg);

        if (acc->awb_fr.config.grid_cfg.width <= 0)
                return -EINVAL;

        acc->awb_fr.config.grid_cfg.height_per_slice =
                IMGU_ABI_AWB_FR_MAX_CELLS_PER_SET /
                acc->awb_fr.config.grid_cfg.width;

        for (i = 0; i < stripes; i++)
                acc->awb_fr.stripes[i] = acc->awb_fr.config;

        if (acc->awb_fr.config.grid_cfg.x_start >=
            acc->stripe.down_scaled_stripes[1].offset + min_overlap) {
                /* Enable only for rightmost stripe, disable left */
                acc->awb_fr.stripes[0].grid_cfg.y_start &=
                                        ~IPU3_UAPI_GRID_Y_START_EN;
        } else if (acc->awb_fr.config.grid_cfg.x_end <=
                   acc->stripe.bds_out_stripes[0].width - min_overlap) {
                /* Enable only for leftmost stripe, disable right */
                acc->awb_fr.stripes[1].grid_cfg.y_start &=
                                        ~IPU3_UAPI_GRID_Y_START_EN;
        } else {
                /* Enable for both stripes */
                u16 end; /* width for grid end */

                acc->awb_fr.stripes[0].grid_cfg.width =
                        (acc->stripe.bds_out_stripes[0].width - min_overlap -
                         acc->awb_fr.config.grid_cfg.x_start + 1) >>
                        acc->awb_fr.config.grid_cfg.block_width_log2;
                acc->awb_fr.stripes[1].grid_cfg.width =
                        acc->awb_fr.config.grid_cfg.width -
                        acc->awb_fr.stripes[0].grid_cfg.width;

                b_w_log2 = acc->awb_fr.stripes[0].grid_cfg.block_width_log2;
                end = imgu_css_grid_end(acc->awb_fr.stripes[0].grid_cfg.x_start,
                                        acc->awb_fr.stripes[0].grid_cfg.width,
                                        b_w_log2);
                acc->awb_fr.stripes[0].grid_cfg.x_end = end;

                acc->awb_fr.stripes[1].grid_cfg.x_start =
                        (acc->awb_fr.stripes[0].grid_cfg.x_end + 1 -
                         acc->stripe.down_scaled_stripes[1].offset) &
                        IPU3_UAPI_GRID_START_MASK;
                b_w_log2 = acc->awb_fr.stripes[1].grid_cfg.block_width_log2;
                end = imgu_css_grid_end(acc->awb_fr.stripes[1].grid_cfg.x_start,
                                        acc->awb_fr.stripes[1].grid_cfg.width,
                                        b_w_log2);
                acc->awb_fr.stripes[1].grid_cfg.x_end = end;

                /*
                 * To reduce complexity of debubbling and loading
                 * statistics fix grid_height_per_slice to 1 for both
                 * stripes.
                 */
                for (i = 0; i < stripes; i++)
                        acc->awb_fr.stripes[i].grid_cfg.height_per_slice = 1;
        }

        if (imgu_css_awb_fr_ops_calc(css, pipe, &acc->awb_fr))
                return -EINVAL;

        /* acc_param: ae_config */

        if (use && use->acc_ae) {
                /* Take values from user */
                acc->ae.grid_cfg = acc_user->ae.grid_cfg;
                acc->ae.ae_ccm = acc_user->ae.ae_ccm;
                for (i = 0; i < IPU3_UAPI_AE_WEIGHTS; i++)
                        acc->ae.weights[i] = acc_user->ae.weights[i];
        } else if (acc_old) {
                /* Use old value */
                acc->ae.grid_cfg = acc_old->ae.grid_cfg;
                acc->ae.ae_ccm = acc_old->ae.ae_ccm;
                for (i = 0; i < IPU3_UAPI_AE_WEIGHTS; i++)
                        acc->ae.weights[i] = acc_old->ae.weights[i];
        } else {
                /* Set from scratch */
                static const struct ipu3_uapi_ae_weight_elem
                        weight_def = { 1, 1, 1, 1, 1, 1, 1, 1 };

                acc->ae.grid_cfg = imgu_css_ae_grid_defaults;
                acc->ae.ae_ccm = imgu_css_ae_ccm_defaults;
                for (i = 0; i < IPU3_UAPI_AE_WEIGHTS; i++)
                        acc->ae.weights[i] = weight_def;
        }

        b_w_log2 = acc->ae.grid_cfg.block_width_log2;
        acc->ae.grid_cfg.x_end = imgu_css_grid_end(acc->ae.grid_cfg.x_start,
                                                   acc->ae.grid_cfg.width,
                                                   b_w_log2);
        b_w_log2 = acc->ae.grid_cfg.block_height_log2;
        acc->ae.grid_cfg.y_end = imgu_css_grid_end(acc->ae.grid_cfg.y_start,
                                                   acc->ae.grid_cfg.height,
                                                   b_w_log2);

        for (i = 0; i < stripes; i++)
                acc->ae.stripes[i].grid = acc->ae.grid_cfg;

        if (acc->ae.grid_cfg.x_start >=
            acc->stripe.down_scaled_stripes[1].offset) {
                /* Enable only for rightmost stripe, disable left */
                acc->ae.stripes[0].grid.ae_en = 0;
        } else if (acc->ae.grid_cfg.x_end <=
                   acc->stripe.bds_out_stripes[0].width) {
                /* Enable only for leftmost stripe, disable right */
                acc->ae.stripes[1].grid.ae_en = 0;
        } else {
                /* Enable for both stripes */
                u8 b_w_log2;

                acc->ae.stripes[0].grid.width =
                        (acc->stripe.bds_out_stripes[0].width -
                         acc->ae.grid_cfg.x_start + 1) >>
                        acc->ae.grid_cfg.block_width_log2;

                acc->ae.stripes[1].grid.width =
                        acc->ae.grid_cfg.width - acc->ae.stripes[0].grid.width;

                b_w_log2 = acc->ae.stripes[0].grid.block_width_log2;
                acc->ae.stripes[0].grid.x_end =
                        imgu_css_grid_end(acc->ae.stripes[0].grid.x_start,
                                          acc->ae.stripes[0].grid.width,
                                          b_w_log2);

                acc->ae.stripes[1].grid.x_start =
                        (acc->ae.stripes[0].grid.x_end + 1 -
                         acc->stripe.down_scaled_stripes[1].offset) &
                        IPU3_UAPI_GRID_START_MASK;
                b_w_log2 = acc->ae.stripes[1].grid.block_width_log2;
                acc->ae.stripes[1].grid.x_end =
                        imgu_css_grid_end(acc->ae.stripes[1].grid.x_start,
                                          acc->ae.stripes[1].grid.width,
                                          b_w_log2);
        }

        /* acc_param: af_config */

        if (use && use->acc_af) {
                /* Take values from user */
                acc->af.config.filter_config = acc_user->af.filter_config;
                acc->af.config.grid_cfg = acc_user->af.grid_cfg;
        } else if (acc_old) {
                /* Use old value */
                acc->af.config = acc_old->af.config;
        } else {
                /* Set from scratch */
                acc->af.config.filter_config =
                                imgu_css_af_defaults.filter_config;
                acc->af.config.grid_cfg = imgu_css_af_defaults.grid_cfg;
        }

        imgu_css_grid_end_calc(&acc->af.config.grid_cfg);

        if (acc->af.config.grid_cfg.width <= 0)
                return -EINVAL;

        acc->af.config.grid_cfg.height_per_slice =
                IMGU_ABI_AF_MAX_CELLS_PER_SET / acc->af.config.grid_cfg.width;
        acc->af.config.frame_size.width =
                ALIGN(css_pipe->rect[IPU3_CSS_RECT_BDS].width, IMGU_ISP_VMEM_ALIGN);
        acc->af.config.frame_size.height =
                css_pipe->rect[IPU3_CSS_RECT_BDS].height;

        if (acc->stripe.bds_out_stripes[0].width <= min_overlap)
                return -EINVAL;

        for (i = 0; i < stripes; i++) {
                acc->af.stripes[i].grid_cfg = acc->af.config.grid_cfg;
                acc->af.stripes[i].frame_size.height =
                                css_pipe->rect[IPU3_CSS_RECT_BDS].height;
                acc->af.stripes[i].frame_size.width =
                        acc->stripe.bds_out_stripes[i].width;
        }

        if (acc->af.config.grid_cfg.x_start >=
            acc->stripe.down_scaled_stripes[1].offset + min_overlap) {
                /* Enable only for rightmost stripe, disable left */
                acc->af.stripes[0].grid_cfg.y_start &=
                        ~IPU3_UAPI_GRID_Y_START_EN;
        } else if (acc->af.config.grid_cfg.x_end <=
                   acc->stripe.bds_out_stripes[0].width - min_overlap) {
                /* Enable only for leftmost stripe, disable right */
                acc->af.stripes[1].grid_cfg.y_start &=
                        ~IPU3_UAPI_GRID_Y_START_EN;
        } else {
                /* Enable for both stripes */

                acc->af.stripes[0].grid_cfg.width =
                        (acc->stripe.bds_out_stripes[0].width - min_overlap -
                         acc->af.config.grid_cfg.x_start + 1) >>
                        acc->af.config.grid_cfg.block_width_log2;
                acc->af.stripes[1].grid_cfg.width =
                        acc->af.config.grid_cfg.width -
                        acc->af.stripes[0].grid_cfg.width;

                b_w_log2 = acc->af.stripes[0].grid_cfg.block_width_log2;
                acc->af.stripes[0].grid_cfg.x_end =
                        imgu_css_grid_end(acc->af.stripes[0].grid_cfg.x_start,
                                          acc->af.stripes[0].grid_cfg.width,
                                          b_w_log2);

                acc->af.stripes[1].grid_cfg.x_start =
                        (acc->af.stripes[0].grid_cfg.x_end + 1 -
                         acc->stripe.down_scaled_stripes[1].offset) &
                        IPU3_UAPI_GRID_START_MASK;

                b_w_log2 = acc->af.stripes[1].grid_cfg.block_width_log2;
                acc->af.stripes[1].grid_cfg.x_end =
                        imgu_css_grid_end(acc->af.stripes[1].grid_cfg.x_start,
                                          acc->af.stripes[1].grid_cfg.width,
                                          b_w_log2);

                /*
                 * To reduce complexity of debubbling and loading statistics
                 * fix grid_height_per_slice to 1 for both stripes
                 */
                for (i = 0; i < stripes; i++)
                        acc->af.stripes[i].grid_cfg.height_per_slice = 1;
        }

        if (imgu_css_af_ops_calc(css, pipe, &acc->af))
                return -EINVAL;

        /* acc_param: awb_config */

        if (use && use->acc_awb) {
                /* Take values from user */
                acc->awb.config = acc_user->awb.config;
        } else if (acc_old) {
                /* Use old value */
                acc->awb.config = acc_old->awb.config;
        } else {
                /* Set from scratch */
                acc->awb.config = imgu_css_awb_defaults;
        }

        if (acc->awb.config.grid.width <= 0)
                return -EINVAL;

        acc->awb.config.grid.height_per_slice =
                IMGU_ABI_AWB_MAX_CELLS_PER_SET / acc->awb.config.grid.width,
        imgu_css_grid_end_calc(&acc->awb.config.grid);

        for (i = 0; i < stripes; i++)
                acc->awb.stripes[i] = acc->awb.config;

        if (acc->awb.config.grid.x_start >=
            acc->stripe.down_scaled_stripes[1].offset + min_overlap) {
                /* Enable only for rightmost stripe, disable left */
                acc->awb.stripes[0].rgbs_thr_b &= ~IPU3_UAPI_AWB_RGBS_THR_B_EN;
        } else if (acc->awb.config.grid.x_end <=
                   acc->stripe.bds_out_stripes[0].width - min_overlap) {
                /* Enable only for leftmost stripe, disable right */
                acc->awb.stripes[1].rgbs_thr_b &= ~IPU3_UAPI_AWB_RGBS_THR_B_EN;
        } else {
                /* Enable for both stripes */

                acc->awb.stripes[0].grid.width =
                        (acc->stripe.bds_out_stripes[0].width -
                         acc->awb.config.grid.x_start + 1) >>
                        acc->awb.config.grid.block_width_log2;
                acc->awb.stripes[1].grid.width = acc->awb.config.grid.width -
                                acc->awb.stripes[0].grid.width;

                b_w_log2 = acc->awb.stripes[0].grid.block_width_log2;
                acc->awb.stripes[0].grid.x_end =
                        imgu_css_grid_end(acc->awb.stripes[0].grid.x_start,
                                          acc->awb.stripes[0].grid.width,
                                          b_w_log2);

                acc->awb.stripes[1].grid.x_start =
                        (acc->awb.stripes[0].grid.x_end + 1 -
                         acc->stripe.down_scaled_stripes[1].offset) &
                        IPU3_UAPI_GRID_START_MASK;

                b_w_log2 = acc->awb.stripes[1].grid.block_width_log2;
                acc->awb.stripes[1].grid.x_end =
                        imgu_css_grid_end(acc->awb.stripes[1].grid.x_start,
                                          acc->awb.stripes[1].grid.width,
                                          b_w_log2);

                /*
                 * To reduce complexity of debubbling and loading statistics
                 * fix grid_height_per_slice to 1 for both stripes
                 */
                for (i = 0; i < stripes; i++)
                        acc->awb.stripes[i].grid.height_per_slice = 1;
        }

        if (imgu_css_awb_ops_calc(css, pipe, &acc->awb))
                return -EINVAL;

        return 0;
}

/*
 * Fill the indicated structure in `new_binary_params' from the possible
 * sources based on `use_user' flag: if the flag is false, copy from
 * `old_binary_params', or if the flag is true, copy from `user_setting'
 * and return NULL (or error pointer on error).
 * If the flag is false and `old_binary_params' is NULL, return pointer
 * to the structure inside `new_binary_params'. In that case the caller
 * should calculate and fill the structure from scratch.
 */
static void *imgu_css_cfg_copy(struct imgu_css *css,
                               unsigned int pipe, bool use_user,
                               void *user_setting, void *old_binary_params,
                               void *new_binary_params,
                               enum imgu_abi_memories m,
                               struct imgu_fw_isp_parameter *par,
                               size_t par_size)
{
        const enum imgu_abi_param_class c = IMGU_ABI_PARAM_CLASS_PARAM;
        void *new_setting, *old_setting;

        new_setting = imgu_css_fw_pipeline_params(css, pipe, c, m, par,
                                                  par_size, new_binary_params);
        if (!new_setting)
                return ERR_PTR(-EPROTO);        /* Corrupted firmware */

        if (use_user) {
                /* Take new user parameters */
                memcpy(new_setting, user_setting, par_size);
        } else if (old_binary_params) {
                /* Take previous value */
                old_setting = imgu_css_fw_pipeline_params(css, pipe, c, m, par,
                                                          par_size,
                                                          old_binary_params);
                if (!old_setting)
                        return ERR_PTR(-EPROTO);
                memcpy(new_setting, old_setting, par_size);
        } else {
                return new_setting;     /* Need to calculate */
        }

        return NULL;            /* Copied from other value */
}

/*
 * Configure VMEM0 parameters (late binding parameters).
 */
int imgu_css_cfg_vmem0(struct imgu_css *css, unsigned int pipe,
                       struct ipu3_uapi_flags *use,
                       void *vmem0, void *vmem0_old,
                       struct ipu3_uapi_params *user)
{
        const struct imgu_fw_info *bi =
                &css->fwp->binary_header[css->pipes[pipe].bindex];
        struct imgu_fw_param_memory_offsets *pofs = (void *)css->fwp +
                bi->blob.memory_offsets.offsets[IMGU_ABI_PARAM_CLASS_PARAM];
        struct ipu3_uapi_isp_lin_vmem_params *lin_vmem = NULL;
        struct ipu3_uapi_isp_tnr3_vmem_params *tnr_vmem = NULL;
        struct ipu3_uapi_isp_xnr3_vmem_params *xnr_vmem = NULL;
        const enum imgu_abi_param_class c = IMGU_ABI_PARAM_CLASS_PARAM;
        const enum imgu_abi_memories m = IMGU_ABI_MEM_ISP_VMEM0;
        unsigned int i;

        /* Configure VMEM0 */

        memset(vmem0, 0, bi->info.isp.sp.mem_initializers.params[c][m].size);

        /* Configure Linearization VMEM0 parameters */

        lin_vmem = imgu_css_cfg_copy(css, pipe, use && use->lin_vmem_params,
                                     &user->lin_vmem_params, vmem0_old, vmem0,
                                     m, &pofs->vmem.lin, sizeof(*lin_vmem));
        if (!IS_ERR_OR_NULL(lin_vmem)) {
                /* Generate parameter from scratch */
                for (i = 0; i < IPU3_UAPI_LIN_LUT_SIZE; i++) {
                        lin_vmem->lin_lutlow_gr[i] = 32 * i;
                        lin_vmem->lin_lutlow_r[i] = 32 * i;
                        lin_vmem->lin_lutlow_b[i] = 32 * i;
                        lin_vmem->lin_lutlow_gb[i] = 32 * i;

                        lin_vmem->lin_lutdif_gr[i] = 32;
                        lin_vmem->lin_lutdif_r[i] = 32;
                        lin_vmem->lin_lutdif_b[i] = 32;
                        lin_vmem->lin_lutdif_gb[i] = 32;
                }
        }

        /* Configure TNR3 VMEM parameters */
        if (css->pipes[pipe].pipe_id == IPU3_CSS_PIPE_ID_VIDEO) {
                tnr_vmem = imgu_css_cfg_copy(css, pipe,
                                             use && use->tnr3_vmem_params,
                                             &user->tnr3_vmem_params,
                                             vmem0_old, vmem0, m,
                                             &pofs->vmem.tnr3,
                                             sizeof(*tnr_vmem));
                if (!IS_ERR_OR_NULL(tnr_vmem)) {
                        /* Generate parameter from scratch */
                        for (i = 0; i < IPU3_UAPI_ISP_TNR3_VMEM_LEN; i++)
                                tnr_vmem->sigma[i] = 256;
                }
        }
        i = IPU3_UAPI_ISP_TNR3_VMEM_LEN;

        /* Configure XNR3 VMEM parameters */

        xnr_vmem = imgu_css_cfg_copy(css, pipe, use && use->xnr3_vmem_params,
                                     &user->xnr3_vmem_params, vmem0_old, vmem0,
                                     m, &pofs->vmem.xnr3, sizeof(*xnr_vmem));
        if (!IS_ERR_OR_NULL(xnr_vmem)) {
                xnr_vmem->x[i] = imgu_css_xnr3_vmem_defaults.x
                        [i % IMGU_XNR3_VMEM_LUT_LEN];
                xnr_vmem->a[i] = imgu_css_xnr3_vmem_defaults.a
                        [i % IMGU_XNR3_VMEM_LUT_LEN];
                xnr_vmem->b[i] = imgu_css_xnr3_vmem_defaults.b
                        [i % IMGU_XNR3_VMEM_LUT_LEN];
                xnr_vmem->c[i] = imgu_css_xnr3_vmem_defaults.c
                        [i % IMGU_XNR3_VMEM_LUT_LEN];
        }

        return IS_ERR(lin_vmem) || IS_ERR(tnr_vmem) || IS_ERR(xnr_vmem) ?
                -EPROTO : 0;
}

/*
 * Configure DMEM0 parameters (late binding parameters).
 */
int imgu_css_cfg_dmem0(struct imgu_css *css, unsigned int pipe,
                       struct ipu3_uapi_flags *use,
                       void *dmem0, void *dmem0_old,
                       struct ipu3_uapi_params *user)
{
        struct imgu_css_pipe *css_pipe = &css->pipes[pipe];
        const struct imgu_fw_info *bi =
                &css->fwp->binary_header[css_pipe->bindex];
        struct imgu_fw_param_memory_offsets *pofs = (void *)css->fwp +
                bi->blob.memory_offsets.offsets[IMGU_ABI_PARAM_CLASS_PARAM];

        struct ipu3_uapi_isp_tnr3_params *tnr_dmem = NULL;
        struct ipu3_uapi_isp_xnr3_params *xnr_dmem;

        const enum imgu_abi_param_class c = IMGU_ABI_PARAM_CLASS_PARAM;
        const enum imgu_abi_memories m = IMGU_ABI_MEM_ISP_DMEM0;

        /* Configure DMEM0 */

        memset(dmem0, 0, bi->info.isp.sp.mem_initializers.params[c][m].size);

        /* Configure TNR3 DMEM0 parameters */
        if (css_pipe->pipe_id == IPU3_CSS_PIPE_ID_VIDEO) {
                tnr_dmem = imgu_css_cfg_copy(css, pipe,
                                             use && use->tnr3_dmem_params,
                                             &user->tnr3_dmem_params,
                                             dmem0_old, dmem0, m,
                                             &pofs->dmem.tnr3,
                                             sizeof(*tnr_dmem));
                if (!IS_ERR_OR_NULL(tnr_dmem)) {
                        /* Generate parameter from scratch */
                        tnr_dmem->knee_y1 = 768;
                        tnr_dmem->knee_y2 = 1280;
                }
        }

        /* Configure XNR3 DMEM0 parameters */

        xnr_dmem = imgu_css_cfg_copy(css, pipe, use && use->xnr3_dmem_params,
                                     &user->xnr3_dmem_params, dmem0_old, dmem0,
                                     m, &pofs->dmem.xnr3, sizeof(*xnr_dmem));
        if (!IS_ERR_OR_NULL(xnr_dmem)) {
                /* Generate parameter from scratch */
                xnr_dmem->alpha.y0 = 2047;
                xnr_dmem->alpha.u0 = 2047;
                xnr_dmem->alpha.v0 = 2047;
        }

        return IS_ERR(tnr_dmem) || IS_ERR(xnr_dmem) ? -EPROTO : 0;
}

/* Generate unity morphing table without morphing effect */
void imgu_css_cfg_gdc_table(struct imgu_abi_gdc_warp_param *gdc,
                            int frame_in_x, int frame_in_y,
                            int frame_out_x, int frame_out_y,
                            int env_w, int env_h)
{
        static const unsigned int FRAC_BITS = IMGU_ABI_GDC_FRAC_BITS;
        static const unsigned int XMEM_ALIGN = 1 << 4;
        const unsigned int XMEM_ALIGN_MASK = ~(XMEM_ALIGN - 1);
        static const unsigned int BCI_ENV = 4;
        static const unsigned int BYP = 2;      /* Bytes per pixel */
        const unsigned int OFFSET_X = 2 * IMGU_DVS_BLOCK_W + env_w + 1;
        const unsigned int OFFSET_Y = IMGU_DVS_BLOCK_H + env_h + 1;

        struct imgu_abi_gdc_warp_param gdc_luma, gdc_chroma;

        unsigned int blocks_x = ALIGN(DIV_ROUND_UP(frame_out_x,
                                                   IMGU_DVS_BLOCK_W), 2);
        unsigned int blocks_y = DIV_ROUND_UP(frame_out_y, IMGU_DVS_BLOCK_H);
        unsigned int y0, x0, x1, x, y;

        /* Global luma settings */
        gdc_luma.origin_x = 0;
        gdc_luma.origin_y = 0;
        gdc_luma.p0_x = (OFFSET_X - (OFFSET_X & XMEM_ALIGN_MASK)) << FRAC_BITS;
        gdc_luma.p0_y = 0;
        gdc_luma.p1_x = gdc_luma.p0_x + (IMGU_DVS_BLOCK_W << FRAC_BITS);
        gdc_luma.p1_y = gdc_luma.p0_y;
        gdc_luma.p2_x = gdc_luma.p0_x;
        gdc_luma.p2_y = gdc_luma.p0_y + (IMGU_DVS_BLOCK_H << FRAC_BITS);
        gdc_luma.p3_x = gdc_luma.p1_x;
        gdc_luma.p3_y = gdc_luma.p2_y;

        gdc_luma.in_block_width = IMGU_DVS_BLOCK_W + BCI_ENV +
                                        OFFSET_X - (OFFSET_X & XMEM_ALIGN_MASK);
        gdc_luma.in_block_width_a = DIV_ROUND_UP(gdc_luma.in_block_width,
                                                 IPU3_UAPI_ISP_VEC_ELEMS);
        gdc_luma.in_block_width_b = DIV_ROUND_UP(gdc_luma.in_block_width,
                                                 IMGU_ABI_ISP_DDR_WORD_BYTES /
                                                 BYP);
        gdc_luma.in_block_height = IMGU_DVS_BLOCK_H + BCI_ENV;
        gdc_luma.padding = 0;

        /* Global chroma settings */
        gdc_chroma.origin_x = 0;
        gdc_chroma.origin_y = 0;
        gdc_chroma.p0_x = (OFFSET_X / 2 - (OFFSET_X / 2 & XMEM_ALIGN_MASK)) <<
                           FRAC_BITS;
        gdc_chroma.p0_y = 0;
        gdc_chroma.p1_x = gdc_chroma.p0_x + (IMGU_DVS_BLOCK_W << FRAC_BITS);
        gdc_chroma.p1_y = gdc_chroma.p0_y;
        gdc_chroma.p2_x = gdc_chroma.p0_x;
        gdc_chroma.p2_y = gdc_chroma.p0_y + (IMGU_DVS_BLOCK_H / 2 << FRAC_BITS);
        gdc_chroma.p3_x = gdc_chroma.p1_x;
        gdc_chroma.p3_y = gdc_chroma.p2_y;

        gdc_chroma.in_block_width = IMGU_DVS_BLOCK_W + BCI_ENV;
        gdc_chroma.in_block_width_a = DIV_ROUND_UP(gdc_chroma.in_block_width,
                                                   IPU3_UAPI_ISP_VEC_ELEMS);
        gdc_chroma.in_block_width_b = DIV_ROUND_UP(gdc_chroma.in_block_width,
                                                   IMGU_ABI_ISP_DDR_WORD_BYTES /
                                                   BYP);
        gdc_chroma.in_block_height = IMGU_DVS_BLOCK_H / 2 + BCI_ENV;
        gdc_chroma.padding = 0;

        /* Calculate block offsets for luma and chroma */
        for (y0 = 0; y0 < blocks_y; y0++) {
                for (x0 = 0; x0 < blocks_x / 2; x0++) {
                        for (x1 = 0; x1 < 2; x1++) {
                                /* Luma blocks */
                                x = (x0 * 2 + x1) * IMGU_DVS_BLOCK_W + OFFSET_X;
                                x &= XMEM_ALIGN_MASK;
                                y = y0 * IMGU_DVS_BLOCK_H + OFFSET_Y;
                                *gdc = gdc_luma;
                                gdc->in_addr_offset =
                                        (y * frame_in_x + x) * BYP;
                                gdc++;
                        }

                        /* Chroma block */
                        x = x0 * IMGU_DVS_BLOCK_W + OFFSET_X / 2;
                        x &= XMEM_ALIGN_MASK;
                        y = y0 * (IMGU_DVS_BLOCK_H / 2) + OFFSET_Y / 2;
                        *gdc = gdc_chroma;
                        gdc->in_addr_offset = (y * frame_in_x + x) * BYP;
                        gdc++;
                }
        }
}