/*
 * Copyright 2012-15 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */

#include "dm_services.h"

/* include DCE11 register header files */
#include "dce/dce_11_0_d.h"
#include "dce/dce_11_0_sh_mask.h"

#include "dc_types.h"
#include "dc_bios_types.h"
#include "dc.h"

#include "include/grph_object_id.h"
#include "include/logger_interface.h"
#include "dce110_timing_generator.h"

#include "timing_generator.h"


#define NUMBER_OF_FRAME_TO_WAIT_ON_TRIGGERED_RESET 10

#define MAX_H_TOTAL (CRTC_H_TOTAL__CRTC_H_TOTAL_MASK + 1)
#define MAX_V_TOTAL (CRTC_V_TOTAL__CRTC_V_TOTAL_MASKhw + 1)

#define CRTC_REG(reg) (reg + tg110->offsets.crtc)
#define DCP_REG(reg) (reg + tg110->offsets.dcp)

/* Flowing register offsets are same in files of
 * dce/dce_11_0_d.h
 * dce/vi_polaris10_p/vi_polaris10_d.h
 *
 * So we can create dce110 timing generator to use it.
 */


/*
* apply_front_porch_workaround
*
* This is a workaround for a bug that has existed since R5xx and has not been
* fixed keep Front porch at minimum 2 for Interlaced mode or 1 for progressive.
*/
static void dce110_timing_generator_apply_front_porch_workaround(
        struct timing_generator *tg,
        struct dc_crtc_timing *timing)
{
        if (timing->flags.INTERLACE == 1) {
                if (timing->v_front_porch < 2)
                        timing->v_front_porch = 2;
        } else {
                if (timing->v_front_porch < 1)
                        timing->v_front_porch = 1;
        }
}

/*
 *****************************************************************************
 *  Function: is_in_vertical_blank
 *
 *  @brief
 *     check the current status of CRTC to check if we are in Vertical Blank
 *     regioneased" state
 *
 *  @return
 *     true if currently in blank region, false otherwise
 *
 *****************************************************************************
 */
static bool dce110_timing_generator_is_in_vertical_blank(
                struct timing_generator *tg)
{
        uint32_t addr = 0;
        uint32_t value = 0;
        uint32_t field = 0;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        addr = CRTC_REG(mmCRTC_STATUS);
        value = dm_read_reg(tg->ctx, addr);
        field = get_reg_field_value(value, CRTC_STATUS, CRTC_V_BLANK);
        return field == 1;
}

void dce110_timing_generator_set_early_control(
                struct timing_generator *tg,
                uint32_t early_cntl)
{
        uint32_t regval;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t address = CRTC_REG(mmCRTC_CONTROL);

        regval = dm_read_reg(tg->ctx, address);
        set_reg_field_value(regval, early_cntl,
                        CRTC_CONTROL, CRTC_HBLANK_EARLY_CONTROL);
        dm_write_reg(tg->ctx, address, regval);
}

/*
 * Enable CRTC
 * Enable CRTC - call ASIC Control Object to enable Timing generator.
 */
bool dce110_timing_generator_enable_crtc(struct timing_generator *tg)
{
        enum bp_result result;

        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t value = 0;

        /*
         * 3 is used to make sure V_UPDATE occurs at the beginning of the first
         * line of vertical front porch
         */
        set_reg_field_value(
                value,
                0,
                CRTC_MASTER_UPDATE_MODE,
                MASTER_UPDATE_MODE);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_MASTER_UPDATE_MODE), value);

        /* TODO: may want this on to catch underflow */
        value = 0;
        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_MASTER_UPDATE_LOCK), value);

        result = tg->bp->funcs->enable_crtc(tg->bp, tg110->controller_id, true);

        return result == BP_RESULT_OK;
}

void dce110_timing_generator_program_blank_color(
                struct timing_generator *tg,
                const struct tg_color *black_color)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t addr = CRTC_REG(mmCRTC_BLACK_COLOR);
        uint32_t value = dm_read_reg(tg->ctx, addr);

        set_reg_field_value(
                value,
                black_color->color_b_cb,
                CRTC_BLACK_COLOR,
                CRTC_BLACK_COLOR_B_CB);
        set_reg_field_value(
                value,
                black_color->color_g_y,
                CRTC_BLACK_COLOR,
                CRTC_BLACK_COLOR_G_Y);
        set_reg_field_value(
                value,
                black_color->color_r_cr,
                CRTC_BLACK_COLOR,
                CRTC_BLACK_COLOR_R_CR);

        dm_write_reg(tg->ctx, addr, value);
}

/*
 *****************************************************************************
 *  Function: disable_stereo
 *
 *  @brief
 *     Disables active stereo on controller
 *     Frame Packing need to be disabled in vBlank or when CRTC not running
 *****************************************************************************
 */
#if 0
@TODOSTEREO
static void disable_stereo(struct timing_generator *tg)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t addr = CRTC_REG(mmCRTC_3D_STRUCTURE_CONTROL);
        uint32_t value = 0;
        uint32_t test = 0;
        uint32_t field = 0;
        uint32_t struc_en = 0;
        uint32_t struc_stereo_sel_ovr = 0;

        value = dm_read_reg(tg->ctx, addr);
        struc_en = get_reg_field_value(
                        value,
                        CRTC_3D_STRUCTURE_CONTROL,
                        CRTC_3D_STRUCTURE_EN);

        struc_stereo_sel_ovr = get_reg_field_value(
                        value,
                        CRTC_3D_STRUCTURE_CONTROL,
                        CRTC_3D_STRUCTURE_STEREO_SEL_OVR);

        /*
         * When disabling Frame Packing in 2 step mode, we need to program both
         * registers at the same frame
         * Programming it in the beginning of VActive makes sure we are ok
         */

        if (struc_en != 0 && struc_stereo_sel_ovr == 0) {
                tg->funcs->wait_for_vblank(tg);
                tg->funcs->wait_for_vactive(tg);
        }

        value = 0;
        dm_write_reg(tg->ctx, addr, value);

        addr = tg->regs[IDX_CRTC_STEREO_CONTROL];
        dm_write_reg(tg->ctx, addr, value);
}
#endif

/*
 * disable_crtc - call ASIC Control Object to disable Timing generator.
 */
bool dce110_timing_generator_disable_crtc(struct timing_generator *tg)
{
        enum bp_result result;

        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        result = tg->bp->funcs->enable_crtc(tg->bp, tg110->controller_id, false);

        /* Need to make sure stereo is disabled according to the DCE5.0 spec */

        /*
         * @TODOSTEREO call this when adding stereo support
         * tg->funcs->disable_stereo(tg);
         */

        return result == BP_RESULT_OK;
}

/*
 * program_horz_count_by_2
 * Programs DxCRTC_HORZ_COUNT_BY2_EN - 1 for DVI 30bpp mode, 0 otherwise
 */
static void program_horz_count_by_2(
        struct timing_generator *tg,
        const struct dc_crtc_timing *timing)
{
        uint32_t regval;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        regval = dm_read_reg(tg->ctx,
                        CRTC_REG(mmCRTC_COUNT_CONTROL));

        set_reg_field_value(regval, 0, CRTC_COUNT_CONTROL,
                        CRTC_HORZ_COUNT_BY2_EN);

        if (timing->flags.HORZ_COUNT_BY_TWO)
                set_reg_field_value(regval, 1, CRTC_COUNT_CONTROL,
                                        CRTC_HORZ_COUNT_BY2_EN);

        dm_write_reg(tg->ctx,
                        CRTC_REG(mmCRTC_COUNT_CONTROL), regval);
}

/*
 * program_timing_generator
 * Program CRTC Timing Registers - DxCRTC_H_*, DxCRTC_V_*, Pixel repetition.
 * Call ASIC Control Object to program Timings.
 */
bool dce110_timing_generator_program_timing_generator(
        struct timing_generator *tg,
        const struct dc_crtc_timing *dc_crtc_timing)
{
        enum bp_result result;
        struct bp_hw_crtc_timing_parameters bp_params;
        struct dc_crtc_timing patched_crtc_timing;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        uint32_t vsync_offset = dc_crtc_timing->v_border_bottom +
                        dc_crtc_timing->v_front_porch;
        uint32_t v_sync_start = dc_crtc_timing->v_addressable + vsync_offset;

        uint32_t hsync_offset = dc_crtc_timing->h_border_right +
                        dc_crtc_timing->h_front_porch;
        uint32_t h_sync_start = dc_crtc_timing->h_addressable + hsync_offset;

        memset(&bp_params, 0, sizeof(struct bp_hw_crtc_timing_parameters));

        /* Due to an asic bug we need to apply the Front Porch workaround prior
         * to programming the timing.
         */

        patched_crtc_timing = *dc_crtc_timing;

        dce110_timing_generator_apply_front_porch_workaround(tg, &patched_crtc_timing);

        bp_params.controller_id = tg110->controller_id;

        bp_params.h_total = patched_crtc_timing.h_total;
        bp_params.h_addressable =
                patched_crtc_timing.h_addressable;
        bp_params.v_total = patched_crtc_timing.v_total;
        bp_params.v_addressable = patched_crtc_timing.v_addressable;

        bp_params.h_sync_start = h_sync_start;
        bp_params.h_sync_width = patched_crtc_timing.h_sync_width;
        bp_params.v_sync_start = v_sync_start;
        bp_params.v_sync_width = patched_crtc_timing.v_sync_width;

        /* Set overscan */
        bp_params.h_overscan_left =
                patched_crtc_timing.h_border_left;
        bp_params.h_overscan_right =
                patched_crtc_timing.h_border_right;
        bp_params.v_overscan_top = patched_crtc_timing.v_border_top;
        bp_params.v_overscan_bottom =
                patched_crtc_timing.v_border_bottom;

        /* Set flags */
        if (patched_crtc_timing.flags.HSYNC_POSITIVE_POLARITY == 1)
                bp_params.flags.HSYNC_POSITIVE_POLARITY = 1;

        if (patched_crtc_timing.flags.VSYNC_POSITIVE_POLARITY == 1)
                bp_params.flags.VSYNC_POSITIVE_POLARITY = 1;

        if (patched_crtc_timing.flags.INTERLACE == 1)
                bp_params.flags.INTERLACE = 1;

        if (patched_crtc_timing.flags.HORZ_COUNT_BY_TWO == 1)
                bp_params.flags.HORZ_COUNT_BY_TWO = 1;

        result = tg->bp->funcs->program_crtc_timing(tg->bp, &bp_params);

        program_horz_count_by_2(tg, &patched_crtc_timing);

        tg110->base.funcs->enable_advanced_request(tg, true, &patched_crtc_timing);

        /* Enable stereo - only when we need to pack 3D frame. Other types
         * of stereo handled in explicit call */

        return result == BP_RESULT_OK;
}

/*
 *****************************************************************************
 *  Function: set_drr
 *
 *  @brief
 *     Program dynamic refresh rate registers m_DxCRTC_V_TOTAL_*.
 *
 *  @param [in] pHwCrtcTiming: point to H
 *  wCrtcTiming struct
 *****************************************************************************
 */
void dce110_timing_generator_set_drr(
        struct timing_generator *tg,
        const struct drr_params *params)
{
        /* register values */
        uint32_t v_total_min = 0;
        uint32_t v_total_max = 0;
        uint32_t v_total_cntl = 0;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        uint32_t addr = 0;

        addr = CRTC_REG(mmCRTC_V_TOTAL_MIN);
        v_total_min = dm_read_reg(tg->ctx, addr);

        addr = CRTC_REG(mmCRTC_V_TOTAL_MAX);
        v_total_max = dm_read_reg(tg->ctx, addr);

        addr = CRTC_REG(mmCRTC_V_TOTAL_CONTROL);
        v_total_cntl = dm_read_reg(tg->ctx, addr);

        if (params != NULL &&
                params->vertical_total_max > 0 &&
                params->vertical_total_min > 0) {

                set_reg_field_value(v_total_max,
                                params->vertical_total_max - 1,
                                CRTC_V_TOTAL_MAX,
                                CRTC_V_TOTAL_MAX);

                set_reg_field_value(v_total_min,
                                params->vertical_total_min - 1,
                                CRTC_V_TOTAL_MIN,
                                CRTC_V_TOTAL_MIN);

                set_reg_field_value(v_total_cntl,
                                1,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_V_TOTAL_MIN_SEL);

                set_reg_field_value(v_total_cntl,
                                1,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_V_TOTAL_MAX_SEL);

                set_reg_field_value(v_total_cntl,
                                0,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_FORCE_LOCK_ON_EVENT);
                set_reg_field_value(v_total_cntl,
                                0,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_FORCE_LOCK_TO_MASTER_VSYNC);

                set_reg_field_value(v_total_cntl,
                                0,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_SET_V_TOTAL_MIN_MASK_EN);

                set_reg_field_value(v_total_cntl,
                                0,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_SET_V_TOTAL_MIN_MASK);
        } else {
                set_reg_field_value(v_total_cntl,
                        0,
                        CRTC_V_TOTAL_CONTROL,
                        CRTC_SET_V_TOTAL_MIN_MASK);
                set_reg_field_value(v_total_cntl,
                                0,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_V_TOTAL_MIN_SEL);
                set_reg_field_value(v_total_cntl,
                                0,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_V_TOTAL_MAX_SEL);
                set_reg_field_value(v_total_min,
                                0,
                                CRTC_V_TOTAL_MIN,
                                CRTC_V_TOTAL_MIN);
                set_reg_field_value(v_total_max,
                                0,
                                CRTC_V_TOTAL_MAX,
                                CRTC_V_TOTAL_MAX);
                set_reg_field_value(v_total_cntl,
                                0,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_FORCE_LOCK_ON_EVENT);
                set_reg_field_value(v_total_cntl,
                                0,
                                CRTC_V_TOTAL_CONTROL,
                                CRTC_FORCE_LOCK_TO_MASTER_VSYNC);
        }

        addr = CRTC_REG(mmCRTC_V_TOTAL_MIN);
        dm_write_reg(tg->ctx, addr, v_total_min);

        addr = CRTC_REG(mmCRTC_V_TOTAL_MAX);
        dm_write_reg(tg->ctx, addr, v_total_max);

        addr = CRTC_REG(mmCRTC_V_TOTAL_CONTROL);
        dm_write_reg(tg->ctx, addr, v_total_cntl);
}

void dce110_timing_generator_set_static_screen_control(
        struct timing_generator *tg,
        uint32_t event_triggers,
        uint32_t num_frames)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t static_screen_cntl = 0;
        uint32_t addr = 0;

        // By register spec, it only takes 8 bit value
        if (num_frames > 0xFF)
                num_frames = 0xFF;

        addr = CRTC_REG(mmCRTC_STATIC_SCREEN_CONTROL);
        static_screen_cntl = dm_read_reg(tg->ctx, addr);

        set_reg_field_value(static_screen_cntl,
                                event_triggers,
                                CRTC_STATIC_SCREEN_CONTROL,
                                CRTC_STATIC_SCREEN_EVENT_MASK);

        set_reg_field_value(static_screen_cntl,
                                num_frames,
                                CRTC_STATIC_SCREEN_CONTROL,
                                CRTC_STATIC_SCREEN_FRAME_COUNT);

        dm_write_reg(tg->ctx, addr, static_screen_cntl);
}

/*
 * get_vblank_counter
 *
 * @brief
 * Get counter for vertical blanks. use register CRTC_STATUS_FRAME_COUNT which
 * holds the counter of frames.
 *
 * @param
 * struct timing_generator *tg - [in] timing generator which controls the
 * desired CRTC
 *
 * @return
 * Counter of frames, which should equal to number of vblanks.
 */
uint32_t dce110_timing_generator_get_vblank_counter(struct timing_generator *tg)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t addr = CRTC_REG(mmCRTC_STATUS_FRAME_COUNT);
        uint32_t value = dm_read_reg(tg->ctx, addr);
        uint32_t field = get_reg_field_value(
                        value, CRTC_STATUS_FRAME_COUNT, CRTC_FRAME_COUNT);

        return field;
}

/*
 *****************************************************************************
 *  Function: dce110_timing_generator_get_position
 *
 *  @brief
 *     Returns CRTC vertical/horizontal counters
 *
 *  @param [out] position
 *****************************************************************************
 */
void dce110_timing_generator_get_position(struct timing_generator *tg,
        struct crtc_position *position)
{
        uint32_t value;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_STATUS_POSITION));

        position->horizontal_count = get_reg_field_value(
                        value,
                        CRTC_STATUS_POSITION,
                        CRTC_HORZ_COUNT);

        position->vertical_count = get_reg_field_value(
                        value,
                        CRTC_STATUS_POSITION,
                        CRTC_VERT_COUNT);

        value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_NOM_VERT_POSITION));

        position->nominal_vcount = get_reg_field_value(
                        value,
                        CRTC_NOM_VERT_POSITION,
                        CRTC_VERT_COUNT_NOM);
}

/*
 *****************************************************************************
 *  Function: get_crtc_scanoutpos
 *
 *  @brief
 *     Returns CRTC vertical/horizontal counters
 *
 *  @param [out] vpos, hpos
 *****************************************************************************
 */
void dce110_timing_generator_get_crtc_scanoutpos(
        struct timing_generator *tg,
        uint32_t *v_blank_start,
        uint32_t *v_blank_end,
        uint32_t *h_position,
        uint32_t *v_position)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        struct crtc_position position;

        uint32_t value  = dm_read_reg(tg->ctx,
                        CRTC_REG(mmCRTC_V_BLANK_START_END));

        *v_blank_start = get_reg_field_value(value,
                                             CRTC_V_BLANK_START_END,
                                             CRTC_V_BLANK_START);
        *v_blank_end = get_reg_field_value(value,
                                           CRTC_V_BLANK_START_END,
                                           CRTC_V_BLANK_END);

        dce110_timing_generator_get_position(
                        tg, &position);

        *h_position = position.horizontal_count;
        *v_position = position.vertical_count;
}

/* TODO: is it safe to assume that mask/shift of Primary and Underlay
 * are the same?
 * For example: today CRTC_H_TOTAL == CRTCV_H_TOTAL but is it always
 * guaranteed? */
void dce110_timing_generator_program_blanking(
        struct timing_generator *tg,
        const struct dc_crtc_timing *timing)
{
        uint32_t vsync_offset = timing->v_border_bottom +
                        timing->v_front_porch;
        uint32_t v_sync_start = timing->v_addressable + vsync_offset;

        uint32_t hsync_offset = timing->h_border_right +
                        timing->h_front_porch;
        uint32_t h_sync_start = timing->h_addressable + hsync_offset;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        struct dc_context *ctx = tg->ctx;
        uint32_t value = 0;
        uint32_t addr = 0;
        uint32_t tmp = 0;

        addr = CRTC_REG(mmCRTC_H_TOTAL);
        value = dm_read_reg(ctx, addr);
        set_reg_field_value(
                value,
                timing->h_total - 1,
                CRTC_H_TOTAL,
                CRTC_H_TOTAL);
        dm_write_reg(ctx, addr, value);

        addr = CRTC_REG(mmCRTC_V_TOTAL);
        value = dm_read_reg(ctx, addr);
        set_reg_field_value(
                value,
                timing->v_total - 1,
                CRTC_V_TOTAL,
                CRTC_V_TOTAL);
        dm_write_reg(ctx, addr, value);

        /* In case of V_TOTAL_CONTROL is on, make sure V_TOTAL_MAX and
         * V_TOTAL_MIN are equal to V_TOTAL.
         */
        addr = CRTC_REG(mmCRTC_V_TOTAL_MAX);
        value = dm_read_reg(ctx, addr);
        set_reg_field_value(
                value,
                timing->v_total - 1,
                CRTC_V_TOTAL_MAX,
                CRTC_V_TOTAL_MAX);
        dm_write_reg(ctx, addr, value);

        addr = CRTC_REG(mmCRTC_V_TOTAL_MIN);
        value = dm_read_reg(ctx, addr);
        set_reg_field_value(
                value,
                timing->v_total - 1,
                CRTC_V_TOTAL_MIN,
                CRTC_V_TOTAL_MIN);
        dm_write_reg(ctx, addr, value);

        addr = CRTC_REG(mmCRTC_H_BLANK_START_END);
        value = dm_read_reg(ctx, addr);

        tmp = timing->h_total -
                (h_sync_start + timing->h_border_left);

        set_reg_field_value(
                value,
                tmp,
                CRTC_H_BLANK_START_END,
                CRTC_H_BLANK_END);

        tmp = tmp + timing->h_addressable +
                timing->h_border_left + timing->h_border_right;

        set_reg_field_value(
                value,
                tmp,
                CRTC_H_BLANK_START_END,
                CRTC_H_BLANK_START);

        dm_write_reg(ctx, addr, value);

        addr = CRTC_REG(mmCRTC_V_BLANK_START_END);
        value = dm_read_reg(ctx, addr);

        tmp = timing->v_total - (v_sync_start + timing->v_border_top);

        set_reg_field_value(
                value,
                tmp,
                CRTC_V_BLANK_START_END,
                CRTC_V_BLANK_END);

        tmp = tmp + timing->v_addressable + timing->v_border_top +
                timing->v_border_bottom;

        set_reg_field_value(
                value,
                tmp,
                CRTC_V_BLANK_START_END,
                CRTC_V_BLANK_START);

        dm_write_reg(ctx, addr, value);
}

void dce110_timing_generator_set_test_pattern(
        struct timing_generator *tg,
        /* TODO: replace 'controller_dp_test_pattern' by 'test_pattern_mode'
         * because this is not DP-specific (which is probably somewhere in DP
         * encoder) */
        enum controller_dp_test_pattern test_pattern,
        enum dc_color_depth color_depth)
{
        struct dc_context *ctx = tg->ctx;
        uint32_t value;
        uint32_t addr;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        enum test_pattern_color_format bit_depth;
        enum test_pattern_dyn_range dyn_range;
        enum test_pattern_mode mode;
        /* color ramp generator mixes 16-bits color */
        uint32_t src_bpc = 16;
        /* requested bpc */
        uint32_t dst_bpc;
        uint32_t index;
        /* RGB values of the color bars.
         * Produce two RGB colors: RGB0 - white (all Fs)
         * and RGB1 - black (all 0s)
         * (three RGB components for two colors)
         */
        uint16_t src_color[6] = {0xFFFF, 0xFFFF, 0xFFFF, 0x0000,
                                                0x0000, 0x0000};
        /* dest color (converted to the specified color format) */
        uint16_t dst_color[6];
        uint32_t inc_base;

        /* translate to bit depth */
        switch (color_depth) {
        case COLOR_DEPTH_666:
                bit_depth = TEST_PATTERN_COLOR_FORMAT_BPC_6;
        break;
        case COLOR_DEPTH_888:
                bit_depth = TEST_PATTERN_COLOR_FORMAT_BPC_8;
        break;
        case COLOR_DEPTH_101010:
                bit_depth = TEST_PATTERN_COLOR_FORMAT_BPC_10;
        break;
        case COLOR_DEPTH_121212:
                bit_depth = TEST_PATTERN_COLOR_FORMAT_BPC_12;
        break;
        default:
                bit_depth = TEST_PATTERN_COLOR_FORMAT_BPC_8;
        break;
        }

        switch (test_pattern) {
        case CONTROLLER_DP_TEST_PATTERN_COLORSQUARES:
        case CONTROLLER_DP_TEST_PATTERN_COLORSQUARES_CEA:
        {
                dyn_range = (test_pattern ==
                                CONTROLLER_DP_TEST_PATTERN_COLORSQUARES_CEA ?
                                TEST_PATTERN_DYN_RANGE_CEA :
                                TEST_PATTERN_DYN_RANGE_VESA);
                mode = TEST_PATTERN_MODE_COLORSQUARES_RGB;
                value = 0;
                addr = CRTC_REG(mmCRTC_TEST_PATTERN_PARAMETERS);

                set_reg_field_value(
                        value,
                        6,
                        CRTC_TEST_PATTERN_PARAMETERS,
                        CRTC_TEST_PATTERN_VRES);
                set_reg_field_value(
                        value,
                        6,
                        CRTC_TEST_PATTERN_PARAMETERS,
                        CRTC_TEST_PATTERN_HRES);

                dm_write_reg(ctx, addr, value);

                addr = CRTC_REG(mmCRTC_TEST_PATTERN_CONTROL);
                value = 0;

                set_reg_field_value(
                        value,
                        1,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_EN);

                set_reg_field_value(
                        value,
                        mode,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_MODE);

                set_reg_field_value(
                        value,
                        dyn_range,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_DYNAMIC_RANGE);
                set_reg_field_value(
                        value,
                        bit_depth,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_COLOR_FORMAT);
                dm_write_reg(ctx, addr, value);
        }
        break;

        case CONTROLLER_DP_TEST_PATTERN_VERTICALBARS:
        case CONTROLLER_DP_TEST_PATTERN_HORIZONTALBARS:
        {
                mode = (test_pattern ==
                        CONTROLLER_DP_TEST_PATTERN_VERTICALBARS ?
                        TEST_PATTERN_MODE_VERTICALBARS :
                        TEST_PATTERN_MODE_HORIZONTALBARS);

                switch (bit_depth) {
                case TEST_PATTERN_COLOR_FORMAT_BPC_6:
                        dst_bpc = 6;
                break;
                case TEST_PATTERN_COLOR_FORMAT_BPC_8:
                        dst_bpc = 8;
                break;
                case TEST_PATTERN_COLOR_FORMAT_BPC_10:
                        dst_bpc = 10;
                break;
                default:
                        dst_bpc = 8;
                break;
                }

                /* adjust color to the required colorFormat */
                for (index = 0; index < 6; index++) {
                        /* dst = 2^dstBpc * src / 2^srcBpc = src >>
                         * (srcBpc - dstBpc);
                         */
                        dst_color[index] =
                                src_color[index] >> (src_bpc - dst_bpc);
                /* CRTC_TEST_PATTERN_DATA has 16 bits,
                 * lowest 6 are hardwired to ZERO
                 * color bits should be left aligned aligned to MSB
                 * XXXXXXXXXX000000 for 10 bit,
                 * XXXXXXXX00000000 for 8 bit and XXXXXX0000000000 for 6
                 */
                        dst_color[index] <<= (16 - dst_bpc);
                }

                value = 0;
                addr = CRTC_REG(mmCRTC_TEST_PATTERN_PARAMETERS);
                dm_write_reg(ctx, addr, value);

                /* We have to write the mask before data, similar to pipeline.
                 * For example, for 8 bpc, if we want RGB0 to be magenta,
                 * and RGB1 to be cyan,
                 * we need to make 7 writes:
                 * MASK   DATA
                 * 000001 00000000 00000000                     set mask to R0
                 * 000010 11111111 00000000     R0 255, 0xFF00, set mask to G0
                 * 000100 00000000 00000000     G0 0,   0x0000, set mask to B0
                 * 001000 11111111 00000000     B0 255, 0xFF00, set mask to R1
                 * 010000 00000000 00000000     R1 0,   0x0000, set mask to G1
                 * 100000 11111111 00000000     G1 255, 0xFF00, set mask to B1
                 * 100000 11111111 00000000     B1 255, 0xFF00
                 *
                 * we will make a loop of 6 in which we prepare the mask,
                 * then write, then prepare the color for next write.
                 * first iteration will write mask only,
                 * but each next iteration color prepared in
                 * previous iteration will be written within new mask,
                 * the last component will written separately,
                 * mask is not changing between 6th and 7th write
                 * and color will be prepared by last iteration
                 */

                /* write color, color values mask in CRTC_TEST_PATTERN_MASK
                 * is B1, G1, R1, B0, G0, R0
                 */
                value = 0;
                addr = CRTC_REG(mmCRTC_TEST_PATTERN_COLOR);
                for (index = 0; index < 6; index++) {
                        /* prepare color mask, first write PATTERN_DATA
                         * will have all zeros
                         */
                        set_reg_field_value(
                                value,
                                (1 << index),
                                CRTC_TEST_PATTERN_COLOR,
                                CRTC_TEST_PATTERN_MASK);
                        /* write color component */
                        dm_write_reg(ctx, addr, value);
                        /* prepare next color component,
                         * will be written in the next iteration
                         */
                        set_reg_field_value(
                                value,
                                dst_color[index],
                                CRTC_TEST_PATTERN_COLOR,
                                CRTC_TEST_PATTERN_DATA);
                }
                /* write last color component,
                 * it's been already prepared in the loop
                 */
                dm_write_reg(ctx, addr, value);

                /* enable test pattern */
                addr = CRTC_REG(mmCRTC_TEST_PATTERN_CONTROL);
                value = 0;

                set_reg_field_value(
                        value,
                        1,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_EN);

                set_reg_field_value(
                        value,
                        mode,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_MODE);

                set_reg_field_value(
                        value,
                        0,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_DYNAMIC_RANGE);

                set_reg_field_value(
                        value,
                        bit_depth,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_COLOR_FORMAT);

                dm_write_reg(ctx, addr, value);
        }
        break;

        case CONTROLLER_DP_TEST_PATTERN_COLORRAMP:
        {
                mode = (bit_depth ==
                        TEST_PATTERN_COLOR_FORMAT_BPC_10 ?
                        TEST_PATTERN_MODE_DUALRAMP_RGB :
                        TEST_PATTERN_MODE_SINGLERAMP_RGB);

                switch (bit_depth) {
                case TEST_PATTERN_COLOR_FORMAT_BPC_6:
                        dst_bpc = 6;
                break;
                case TEST_PATTERN_COLOR_FORMAT_BPC_8:
                        dst_bpc = 8;
                break;
                case TEST_PATTERN_COLOR_FORMAT_BPC_10:
                        dst_bpc = 10;
                break;
                default:
                        dst_bpc = 8;
                break;
                }

                /* increment for the first ramp for one color gradation
                 * 1 gradation for 6-bit color is 2^10
                 * gradations in 16-bit color
                 */
                inc_base = (src_bpc - dst_bpc);

                value = 0;
                addr = CRTC_REG(mmCRTC_TEST_PATTERN_PARAMETERS);

                switch (bit_depth) {
                case TEST_PATTERN_COLOR_FORMAT_BPC_6:
                {
                        set_reg_field_value(
                                value,
                                inc_base,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_INC0);
                        set_reg_field_value(
                                value,
                                0,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_INC1);
                        set_reg_field_value(
                                value,
                                6,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_HRES);
                        set_reg_field_value(
                                value,
                                6,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_VRES);
                        set_reg_field_value(
                                value,
                                0,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_RAMP0_OFFSET);
                }
                break;
                case TEST_PATTERN_COLOR_FORMAT_BPC_8:
                {
                        set_reg_field_value(
                                value,
                                inc_base,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_INC0);
                        set_reg_field_value(
                                value,
                                0,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_INC1);
                        set_reg_field_value(
                                value,
                                8,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_HRES);
                        set_reg_field_value(
                                value,
                                6,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_VRES);
                        set_reg_field_value(
                                value,
                                0,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_RAMP0_OFFSET);
                }
                break;
                case TEST_PATTERN_COLOR_FORMAT_BPC_10:
                {
                        set_reg_field_value(
                                value,
                                inc_base,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_INC0);
                        set_reg_field_value(
                                value,
                                inc_base + 2,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_INC1);
                        set_reg_field_value(
                                value,
                                8,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_HRES);
                        set_reg_field_value(
                                value,
                                5,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_VRES);
                        set_reg_field_value(
                                value,
                                384 << 6,
                                CRTC_TEST_PATTERN_PARAMETERS,
                                CRTC_TEST_PATTERN_RAMP0_OFFSET);
                }
                break;
                default:
                break;
                }
                dm_write_reg(ctx, addr, value);

                value = 0;
                addr = CRTC_REG(mmCRTC_TEST_PATTERN_COLOR);
                dm_write_reg(ctx, addr, value);

                /* enable test pattern */
                addr = CRTC_REG(mmCRTC_TEST_PATTERN_CONTROL);
                value = 0;

                set_reg_field_value(
                        value,
                        1,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_EN);

                set_reg_field_value(
                        value,
                        mode,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_MODE);

                set_reg_field_value(
                        value,
                        0,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_DYNAMIC_RANGE);
                /* add color depth translation here */
                set_reg_field_value(
                        value,
                        bit_depth,
                        CRTC_TEST_PATTERN_CONTROL,
                        CRTC_TEST_PATTERN_COLOR_FORMAT);

                dm_write_reg(ctx, addr, value);
        }
        break;
        case CONTROLLER_DP_TEST_PATTERN_VIDEOMODE:
        {
                value = 0;
                dm_write_reg(ctx, CRTC_REG(mmCRTC_TEST_PATTERN_CONTROL), value);
                dm_write_reg(ctx, CRTC_REG(mmCRTC_TEST_PATTERN_COLOR), value);
                dm_write_reg(ctx, CRTC_REG(mmCRTC_TEST_PATTERN_PARAMETERS),
                                value);
        }
        break;
        default:
        break;
        }
}

/*
 * dce110_timing_generator_validate_timing
 * The timing generators support a maximum display size of is 8192 x 8192 pixels,
 * including both active display and blanking periods. Check H Total and V Total.
 */
bool dce110_timing_generator_validate_timing(
        struct timing_generator *tg,
        const struct dc_crtc_timing *timing,
        enum signal_type signal)
{
        uint32_t h_blank;
        uint32_t h_back_porch, hsync_offset, h_sync_start;

        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        ASSERT(timing != NULL);

        if (!timing)
                return false;

        hsync_offset = timing->h_border_right + timing->h_front_porch;
        h_sync_start = timing->h_addressable + hsync_offset;

        /* Currently we don't support 3D, so block all 3D timings */
        if (timing->timing_3d_format != TIMING_3D_FORMAT_NONE)
                return false;

        /* Temporarily blocking interlacing mode until it's supported */
        if (timing->flags.INTERLACE == 1)
                return false;

        /* Check maximum number of pixels supported by Timing Generator
         * (Currently will never fail, in order to fail needs display which
         * needs more than 8192 horizontal and
         * more than 8192 vertical total pixels)
         */
        if (timing->h_total > tg110->max_h_total ||
                timing->v_total > tg110->max_v_total)
                return false;

        h_blank = (timing->h_total - timing->h_addressable -
                timing->h_border_right -
                timing->h_border_left);

        if (h_blank < tg110->min_h_blank)
                return false;

        if (timing->h_front_porch < tg110->min_h_front_porch)
                return false;

        h_back_porch = h_blank - (h_sync_start -
                timing->h_addressable -
                timing->h_border_right -
                timing->h_sync_width);

        if (h_back_porch < tg110->min_h_back_porch)
                return false;

        return true;
}

/*
 * Wait till we are at the beginning of VBlank.
 */
void dce110_timing_generator_wait_for_vblank(struct timing_generator *tg)
{
        /* We want to catch beginning of VBlank here, so if the first try are
         * in VBlank, we might be very close to Active, in this case wait for
         * another frame
         */
        while (dce110_timing_generator_is_in_vertical_blank(tg)) {
                if (!dce110_timing_generator_is_counter_moving(tg)) {
                        /* error - no point to wait if counter is not moving */
                        break;
                }
        }

        while (!dce110_timing_generator_is_in_vertical_blank(tg)) {
                if (!dce110_timing_generator_is_counter_moving(tg)) {
                        /* error - no point to wait if counter is not moving */
                        break;
                }
        }
}

/*
 * Wait till we are in VActive (anywhere in VActive)
 */
void dce110_timing_generator_wait_for_vactive(struct timing_generator *tg)
{
        while (dce110_timing_generator_is_in_vertical_blank(tg)) {
                if (!dce110_timing_generator_is_counter_moving(tg)) {
                        /* error - no point to wait if counter is not moving */
                        break;
                }
        }
}

/*
 *****************************************************************************
 *  Function: dce110_timing_generator_setup_global_swap_lock
 *
 *  @brief
 *     Setups Global Swap Lock group for current pipe
 *     Pipe can join or leave GSL group, become a TimingServer or TimingClient
 *
 *  @param [in] gsl_params: setup data
 *****************************************************************************
 */
void dce110_timing_generator_setup_global_swap_lock(
        struct timing_generator *tg,
        const struct dcp_gsl_params *gsl_params)
{
        uint32_t value;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t address = DCP_REG(mmDCP_GSL_CONTROL);
        uint32_t check_point = FLIP_READY_BACK_LOOKUP;

        value = dm_read_reg(tg->ctx, address);

        /* This pipe will belong to GSL Group zero. */
        set_reg_field_value(value,
                            1,
                            DCP_GSL_CONTROL,
                            DCP_GSL0_EN);

        set_reg_field_value(value,
                            gsl_params->gsl_master == tg->inst,
                            DCP_GSL_CONTROL,
                            DCP_GSL_MASTER_EN);

        set_reg_field_value(value,
                            HFLIP_READY_DELAY,
                            DCP_GSL_CONTROL,
                            DCP_GSL_HSYNC_FLIP_FORCE_DELAY);

        /* Keep signal low (pending high) during 6 lines.
         * Also defines minimum interval before re-checking signal. */
        set_reg_field_value(value,
                            HFLIP_CHECK_DELAY,
                            DCP_GSL_CONTROL,
                            DCP_GSL_HSYNC_FLIP_CHECK_DELAY);

        dm_write_reg(tg->ctx, CRTC_REG(mmDCP_GSL_CONTROL), value);
        value = 0;

        set_reg_field_value(value,
                            gsl_params->gsl_master,
                            DCIO_GSL0_CNTL,
                            DCIO_GSL0_VSYNC_SEL);

        set_reg_field_value(value,
                            0,
                            DCIO_GSL0_CNTL,
                            DCIO_GSL0_TIMING_SYNC_SEL);

        set_reg_field_value(value,
                            0,
                            DCIO_GSL0_CNTL,
                            DCIO_GSL0_GLOBAL_UNLOCK_SEL);

        dm_write_reg(tg->ctx, CRTC_REG(mmDCIO_GSL0_CNTL), value);


        {
                uint32_t value_crtc_vtotal;

                value_crtc_vtotal = dm_read_reg(tg->ctx,
                                CRTC_REG(mmCRTC_V_TOTAL));

                set_reg_field_value(value,
                                    0,/* DCP_GSL_PURPOSE_SURFACE_FLIP */
                                    DCP_GSL_CONTROL,
                                    DCP_GSL_SYNC_SOURCE);

                /* Checkpoint relative to end of frame */
                check_point = get_reg_field_value(value_crtc_vtotal,
                                                  CRTC_V_TOTAL,
                                                  CRTC_V_TOTAL);

                dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_GSL_WINDOW), 0);
        }

        set_reg_field_value(value,
                            1,
                            DCP_GSL_CONTROL,
                            DCP_GSL_DELAY_SURFACE_UPDATE_PENDING);

        dm_write_reg(tg->ctx, address, value);

        /********************************************************************/
        address = CRTC_REG(mmCRTC_GSL_CONTROL);

        value = dm_read_reg(tg->ctx, address);
        set_reg_field_value(value,
                            check_point - FLIP_READY_BACK_LOOKUP,
                            CRTC_GSL_CONTROL,
                            CRTC_GSL_CHECK_LINE_NUM);

        set_reg_field_value(value,
                            VFLIP_READY_DELAY,
                            CRTC_GSL_CONTROL,
                            CRTC_GSL_FORCE_DELAY);

        dm_write_reg(tg->ctx, address, value);
}

void dce110_timing_generator_tear_down_global_swap_lock(
        struct timing_generator *tg)
{
        /* Clear all the register writes done by
         * dce110_timing_generator_setup_global_swap_lock
         */

        uint32_t value;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t address = DCP_REG(mmDCP_GSL_CONTROL);

        value = 0;

        /* This pipe will belong to GSL Group zero. */
        /* Settig HW default values from reg specs */
        set_reg_field_value(value,
                        0,
                        DCP_GSL_CONTROL,
                        DCP_GSL0_EN);

        set_reg_field_value(value,
                        0,
                        DCP_GSL_CONTROL,
                        DCP_GSL_MASTER_EN);

        set_reg_field_value(value,
                        0x2,
                        DCP_GSL_CONTROL,
                        DCP_GSL_HSYNC_FLIP_FORCE_DELAY);

        set_reg_field_value(value,
                        0x6,
                        DCP_GSL_CONTROL,
                        DCP_GSL_HSYNC_FLIP_CHECK_DELAY);

        /* Restore DCP_GSL_PURPOSE_SURFACE_FLIP */
        {
                dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_V_TOTAL));

                set_reg_field_value(value,
                                0,
                                DCP_GSL_CONTROL,
                                DCP_GSL_SYNC_SOURCE);
        }

        set_reg_field_value(value,
                        0,
                        DCP_GSL_CONTROL,
                        DCP_GSL_DELAY_SURFACE_UPDATE_PENDING);

        dm_write_reg(tg->ctx, address, value);

        /********************************************************************/
        address = CRTC_REG(mmCRTC_GSL_CONTROL);

        value = 0;
        set_reg_field_value(value,
                        0,
                        CRTC_GSL_CONTROL,
                        CRTC_GSL_CHECK_LINE_NUM);

        set_reg_field_value(value,
                        0x2,
                        CRTC_GSL_CONTROL,
                        CRTC_GSL_FORCE_DELAY);

        dm_write_reg(tg->ctx, address, value);
}
/*
 *****************************************************************************
 *  Function: is_counter_moving
 *
 *  @brief
 *     check if the timing generator is currently going
 *
 *  @return
 *     true if currently going, false if currently paused or stopped.
 *
 *****************************************************************************
 */
bool dce110_timing_generator_is_counter_moving(struct timing_generator *tg)
{
        struct crtc_position position1, position2;

        tg->funcs->get_position(tg, &position1);
        tg->funcs->get_position(tg, &position2);

        if (position1.horizontal_count == position2.horizontal_count &&
                position1.vertical_count == position2.vertical_count)
                return false;
        else
                return true;
}

void dce110_timing_generator_enable_advanced_request(
        struct timing_generator *tg,
        bool enable,
        const struct dc_crtc_timing *timing)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t addr = CRTC_REG(mmCRTC_START_LINE_CONTROL);
        uint32_t value = dm_read_reg(tg->ctx, addr);

        if (enable) {
                set_reg_field_value(
                        value,
                        0,
                        CRTC_START_LINE_CONTROL,
                        CRTC_LEGACY_REQUESTOR_EN);
        } else {
                set_reg_field_value(
                        value,
                        1,
                        CRTC_START_LINE_CONTROL,
                        CRTC_LEGACY_REQUESTOR_EN);
        }

        if ((timing->v_sync_width + timing->v_front_porch) <= 3) {
                set_reg_field_value(
                        value,
                        3,
                        CRTC_START_LINE_CONTROL,
                        CRTC_ADVANCED_START_LINE_POSITION);
                set_reg_field_value(
                        value,
                        0,
                        CRTC_START_LINE_CONTROL,
                        CRTC_PREFETCH_EN);
        } else {
                set_reg_field_value(
                        value,
                        4,
                        CRTC_START_LINE_CONTROL,
                        CRTC_ADVANCED_START_LINE_POSITION);
                set_reg_field_value(
                        value,
                        1,
                        CRTC_START_LINE_CONTROL,
                        CRTC_PREFETCH_EN);
        }

        set_reg_field_value(
                value,
                1,
                CRTC_START_LINE_CONTROL,
                CRTC_PROGRESSIVE_START_LINE_EARLY);

        set_reg_field_value(
                value,
                1,
                CRTC_START_LINE_CONTROL,
                CRTC_INTERLACE_START_LINE_EARLY);

        dm_write_reg(tg->ctx, addr, value);
}

/*TODO: Figure out if we need this function. */
void dce110_timing_generator_set_lock_master(struct timing_generator *tg,
                bool lock)
{
        struct dc_context *ctx = tg->ctx;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t addr = CRTC_REG(mmCRTC_MASTER_UPDATE_LOCK);
        uint32_t value = dm_read_reg(ctx, addr);

        set_reg_field_value(
                value,
                lock ? 1 : 0,
                CRTC_MASTER_UPDATE_LOCK,
                MASTER_UPDATE_LOCK);

        dm_write_reg(ctx, addr, value);
}

void dce110_timing_generator_enable_reset_trigger(
        struct timing_generator *tg,
        int source_tg_inst)
{
        uint32_t value;
        uint32_t rising_edge = 0;
        uint32_t falling_edge = 0;
        enum trigger_source_select trig_src_select = TRIGGER_SOURCE_SELECT_LOGIC_ZERO;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        /* Setup trigger edge */
        {
                uint32_t pol_value = dm_read_reg(tg->ctx,
                                CRTC_REG(mmCRTC_V_SYNC_A_CNTL));

                /* Register spec has reversed definition:
                 *      0 for positive, 1 for negative */
                if (get_reg_field_value(pol_value,
                                CRTC_V_SYNC_A_CNTL,
                                CRTC_V_SYNC_A_POL) == 0) {
                        rising_edge = 1;
                } else {
                        falling_edge = 1;
                }
        }

        value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL));

        trig_src_select = TRIGGER_SOURCE_SELECT_GSL_GROUP0;

        set_reg_field_value(value,
                        trig_src_select,
                        CRTC_TRIGB_CNTL,
                        CRTC_TRIGB_SOURCE_SELECT);

        set_reg_field_value(value,
                        TRIGGER_POLARITY_SELECT_LOGIC_ZERO,
                        CRTC_TRIGB_CNTL,
                        CRTC_TRIGB_POLARITY_SELECT);

        set_reg_field_value(value,
                        rising_edge,
                        CRTC_TRIGB_CNTL,
                        CRTC_TRIGB_RISING_EDGE_DETECT_CNTL);

        set_reg_field_value(value,
                        falling_edge,
                        CRTC_TRIGB_CNTL,
                        CRTC_TRIGB_FALLING_EDGE_DETECT_CNTL);

        set_reg_field_value(value,
                        0, /* send every signal */
                        CRTC_TRIGB_CNTL,
                        CRTC_TRIGB_FREQUENCY_SELECT);

        set_reg_field_value(value,
                        0, /* no delay */
                        CRTC_TRIGB_CNTL,
                        CRTC_TRIGB_DELAY);

        set_reg_field_value(value,
                        1, /* clear trigger status */
                        CRTC_TRIGB_CNTL,
                        CRTC_TRIGB_CLEAR);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL), value);

        /**************************************************************/

        value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL));

        set_reg_field_value(value,
                        2, /* force H count to H_TOTAL and V count to V_TOTAL */
                        CRTC_FORCE_COUNT_NOW_CNTL,
                        CRTC_FORCE_COUNT_NOW_MODE);

        set_reg_field_value(value,
                        1, /* TriggerB - we never use TriggerA */
                        CRTC_FORCE_COUNT_NOW_CNTL,
                        CRTC_FORCE_COUNT_NOW_TRIG_SEL);

        set_reg_field_value(value,
                        1, /* clear trigger status */
                        CRTC_FORCE_COUNT_NOW_CNTL,
                        CRTC_FORCE_COUNT_NOW_CLEAR);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL), value);
}

void dce110_timing_generator_enable_crtc_reset(
                struct timing_generator *tg,
                int source_tg_inst,
                struct crtc_trigger_info *crtc_tp)
{
        uint32_t value = 0;
        uint32_t rising_edge = 0;
        uint32_t falling_edge = 0;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        /* Setup trigger edge */
        switch (crtc_tp->event) {
        case CRTC_EVENT_VSYNC_RISING:
                        rising_edge = 1;
                        break;

        case CRTC_EVENT_VSYNC_FALLING:
                falling_edge = 1;
                break;
        }

        value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL));

        set_reg_field_value(value,
                            source_tg_inst,
                            CRTC_TRIGB_CNTL,
                            CRTC_TRIGB_SOURCE_SELECT);

        set_reg_field_value(value,
                            TRIGGER_POLARITY_SELECT_LOGIC_ZERO,
                            CRTC_TRIGB_CNTL,
                            CRTC_TRIGB_POLARITY_SELECT);

        set_reg_field_value(value,
                            rising_edge,
                            CRTC_TRIGB_CNTL,
                            CRTC_TRIGB_RISING_EDGE_DETECT_CNTL);

        set_reg_field_value(value,
                            falling_edge,
                            CRTC_TRIGB_CNTL,
                            CRTC_TRIGB_FALLING_EDGE_DETECT_CNTL);

        set_reg_field_value(value,
                            1, /* clear trigger status */
                            CRTC_TRIGB_CNTL,
                            CRTC_TRIGB_CLEAR);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL), value);

        /**************************************************************/

        switch (crtc_tp->delay) {
        case TRIGGER_DELAY_NEXT_LINE:
                value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL));

                set_reg_field_value(value,
                                    0, /* force H count to H_TOTAL and V count to V_TOTAL */
                                    CRTC_FORCE_COUNT_NOW_CNTL,
                                    CRTC_FORCE_COUNT_NOW_MODE);

                set_reg_field_value(value,
                                    0, /* TriggerB - we never use TriggerA */
                                    CRTC_FORCE_COUNT_NOW_CNTL,
                                    CRTC_FORCE_COUNT_NOW_TRIG_SEL);

                set_reg_field_value(value,
                                    1, /* clear trigger status */
                                    CRTC_FORCE_COUNT_NOW_CNTL,
                                    CRTC_FORCE_COUNT_NOW_CLEAR);

                dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL), value);

                value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL));

                set_reg_field_value(value,
                                    1,
                                    CRTC_VERT_SYNC_CONTROL,
                                    CRTC_FORCE_VSYNC_NEXT_LINE_CLEAR);

                set_reg_field_value(value,
                                    2,
                                    CRTC_VERT_SYNC_CONTROL,
                                    CRTC_AUTO_FORCE_VSYNC_MODE);

                break;

        case TRIGGER_DELAY_NEXT_PIXEL:
                value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL));

                set_reg_field_value(value,
                                    1,
                                    CRTC_VERT_SYNC_CONTROL,
                                    CRTC_FORCE_VSYNC_NEXT_LINE_CLEAR);

                set_reg_field_value(value,
                                    0,
                                    CRTC_VERT_SYNC_CONTROL,
                                    CRTC_AUTO_FORCE_VSYNC_MODE);

                dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL), value);

                value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL));

                set_reg_field_value(value,
                                    2, /* force H count to H_TOTAL and V count to V_TOTAL */
                                    CRTC_FORCE_COUNT_NOW_CNTL,
                                    CRTC_FORCE_COUNT_NOW_MODE);

                set_reg_field_value(value,
                                    1, /* TriggerB - we never use TriggerA */
                                    CRTC_FORCE_COUNT_NOW_CNTL,
                                    CRTC_FORCE_COUNT_NOW_TRIG_SEL);

                set_reg_field_value(value,
                                    1, /* clear trigger status */
                                    CRTC_FORCE_COUNT_NOW_CNTL,
                                    CRTC_FORCE_COUNT_NOW_CLEAR);

                dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL), value);
                break;
        }

        value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_MASTER_UPDATE_MODE));

        set_reg_field_value(value,
                            2,
                            CRTC_MASTER_UPDATE_MODE,
                            MASTER_UPDATE_MODE);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_MASTER_UPDATE_MODE), value);
}
void dce110_timing_generator_disable_reset_trigger(
        struct timing_generator *tg)
{
        uint32_t value;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL));

        set_reg_field_value(value,
                            0, /* force counter now mode is disabled */
                            CRTC_FORCE_COUNT_NOW_CNTL,
                            CRTC_FORCE_COUNT_NOW_MODE);

        set_reg_field_value(value,
                            1, /* clear trigger status */
                            CRTC_FORCE_COUNT_NOW_CNTL,
                            CRTC_FORCE_COUNT_NOW_CLEAR);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL), value);

        value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL));

        set_reg_field_value(value,
                            1,
                            CRTC_VERT_SYNC_CONTROL,
                            CRTC_FORCE_VSYNC_NEXT_LINE_CLEAR);

        set_reg_field_value(value,
                            0,
                            CRTC_VERT_SYNC_CONTROL,
                            CRTC_AUTO_FORCE_VSYNC_MODE);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL), value);

        /********************************************************************/
        value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL));

        set_reg_field_value(value,
                            TRIGGER_SOURCE_SELECT_LOGIC_ZERO,
                            CRTC_TRIGB_CNTL,
                            CRTC_TRIGB_SOURCE_SELECT);

        set_reg_field_value(value,
                            TRIGGER_POLARITY_SELECT_LOGIC_ZERO,
                            CRTC_TRIGB_CNTL,
                            CRTC_TRIGB_POLARITY_SELECT);

        set_reg_field_value(value,
                            1, /* clear trigger status */
                            CRTC_TRIGB_CNTL,
                            CRTC_TRIGB_CLEAR);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL), value);
}

/*
 *****************************************************************************
 *  @brief
 *     Checks whether CRTC triggered reset occurred
 *
 *  @return
 *     true if triggered reset occurred, false otherwise
 *****************************************************************************
 */
bool dce110_timing_generator_did_triggered_reset_occur(
        struct timing_generator *tg)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t value = dm_read_reg(tg->ctx,
                        CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL));
        uint32_t value1 = dm_read_reg(tg->ctx,
                        CRTC_REG(mmCRTC_VERT_SYNC_CONTROL));
        bool force = get_reg_field_value(value,
                                         CRTC_FORCE_COUNT_NOW_CNTL,
                                         CRTC_FORCE_COUNT_NOW_OCCURRED) != 0;
        bool vert_sync = get_reg_field_value(value1,
                                             CRTC_VERT_SYNC_CONTROL,
                                             CRTC_FORCE_VSYNC_NEXT_LINE_OCCURRED) != 0;

        return (force || vert_sync);
}

/*
 * dce110_timing_generator_disable_vga
 * Turn OFF VGA Mode and Timing  - DxVGA_CONTROL
 * VGA Mode and VGA Timing is used by VBIOS on CRT Monitors;
 */
void dce110_timing_generator_disable_vga(
        struct timing_generator *tg)
{
        uint32_t addr = 0;
        uint32_t value = 0;

        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        switch (tg110->controller_id) {
        case CONTROLLER_ID_D0:
                addr = mmD1VGA_CONTROL;
                break;
        case CONTROLLER_ID_D1:
                addr = mmD2VGA_CONTROL;
                break;
        case CONTROLLER_ID_D2:
                addr = mmD3VGA_CONTROL;
                break;
        case CONTROLLER_ID_D3:
                addr = mmD4VGA_CONTROL;
                break;
        case CONTROLLER_ID_D4:
                addr = mmD5VGA_CONTROL;
                break;
        case CONTROLLER_ID_D5:
                addr = mmD6VGA_CONTROL;
                break;
        default:
                break;
        }
        value = dm_read_reg(tg->ctx, addr);

        set_reg_field_value(value, 0, D1VGA_CONTROL, D1VGA_MODE_ENABLE);
        set_reg_field_value(value, 0, D1VGA_CONTROL, D1VGA_TIMING_SELECT);
        set_reg_field_value(
                        value, 0, D1VGA_CONTROL, D1VGA_SYNC_POLARITY_SELECT);
        set_reg_field_value(value, 0, D1VGA_CONTROL, D1VGA_OVERSCAN_COLOR_EN);

        dm_write_reg(tg->ctx, addr, value);
}

/*
 * set_overscan_color_black
 *
 * @param :black_color is one of the color space
 *    :this routine will set overscan black color according to the color space.
 * @return none
 */
void dce110_timing_generator_set_overscan_color_black(
        struct timing_generator *tg,
        const struct tg_color *color)
{
        struct dc_context *ctx = tg->ctx;
        uint32_t addr;
        uint32_t value = 0;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        set_reg_field_value(
                        value,
                        color->color_b_cb,
                        CRTC_OVERSCAN_COLOR,
                        CRTC_OVERSCAN_COLOR_BLUE);

        set_reg_field_value(
                        value,
                        color->color_r_cr,
                        CRTC_OVERSCAN_COLOR,
                        CRTC_OVERSCAN_COLOR_RED);

        set_reg_field_value(
                        value,
                        color->color_g_y,
                        CRTC_OVERSCAN_COLOR,
                        CRTC_OVERSCAN_COLOR_GREEN);

        addr = CRTC_REG(mmCRTC_OVERSCAN_COLOR);
        dm_write_reg(ctx, addr, value);
        addr = CRTC_REG(mmCRTC_BLACK_COLOR);
        dm_write_reg(ctx, addr, value);
        /* This is desirable to have a constant DAC output voltage during the
         * blank time that is higher than the 0 volt reference level that the
         * DAC outputs when the NBLANK signal
         * is asserted low, such as for output to an analog TV. */
        addr = CRTC_REG(mmCRTC_BLANK_DATA_COLOR);
        dm_write_reg(ctx, addr, value);

        /* TO DO we have to program EXT registers and we need to know LB DATA
         * format because it is used when more 10 , i.e. 12 bits per color
         *
         * m_mmDxCRTC_OVERSCAN_COLOR_EXT
         * m_mmDxCRTC_BLACK_COLOR_EXT
         * m_mmDxCRTC_BLANK_DATA_COLOR_EXT
         */

}

void dce110_tg_program_blank_color(struct timing_generator *tg,
                const struct tg_color *black_color)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t addr = CRTC_REG(mmCRTC_BLACK_COLOR);
        uint32_t value = dm_read_reg(tg->ctx, addr);

        set_reg_field_value(
                value,
                black_color->color_b_cb,
                CRTC_BLACK_COLOR,
                CRTC_BLACK_COLOR_B_CB);
        set_reg_field_value(
                value,
                black_color->color_g_y,
                CRTC_BLACK_COLOR,
                CRTC_BLACK_COLOR_G_Y);
        set_reg_field_value(
                value,
                black_color->color_r_cr,
                CRTC_BLACK_COLOR,
                CRTC_BLACK_COLOR_R_CR);

        dm_write_reg(tg->ctx, addr, value);

        addr = CRTC_REG(mmCRTC_BLANK_DATA_COLOR);
        dm_write_reg(tg->ctx, addr, value);
}

void dce110_tg_set_overscan_color(struct timing_generator *tg,
        const struct tg_color *overscan_color)
{
        struct dc_context *ctx = tg->ctx;
        uint32_t value = 0;
        uint32_t addr;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        set_reg_field_value(
                value,
                overscan_color->color_b_cb,
                CRTC_OVERSCAN_COLOR,
                CRTC_OVERSCAN_COLOR_BLUE);

        set_reg_field_value(
                value,
                overscan_color->color_g_y,
                CRTC_OVERSCAN_COLOR,
                CRTC_OVERSCAN_COLOR_GREEN);

        set_reg_field_value(
                value,
                overscan_color->color_r_cr,
                CRTC_OVERSCAN_COLOR,
                CRTC_OVERSCAN_COLOR_RED);

        addr = CRTC_REG(mmCRTC_OVERSCAN_COLOR);
        dm_write_reg(ctx, addr, value);
}

void dce110_tg_program_timing(struct timing_generator *tg,
        const struct dc_crtc_timing *timing,
        int vready_offset,
        int vstartup_start,
        int vupdate_offset,
        int vupdate_width,
        int pstate_keepout,
        const enum signal_type signal,
        bool use_vbios)
{
        if (use_vbios)
                dce110_timing_generator_program_timing_generator(tg, timing);
        else
                dce110_timing_generator_program_blanking(tg, timing);
}

bool dce110_tg_is_blanked(struct timing_generator *tg)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_BLANK_CONTROL));

        if (get_reg_field_value(
                        value,
                        CRTC_BLANK_CONTROL,
                        CRTC_BLANK_DATA_EN) == 1 &&
                get_reg_field_value(
                        value,
                        CRTC_BLANK_CONTROL,
                        CRTC_CURRENT_BLANK_STATE) == 1)
                return true;
        return false;
}

void dce110_tg_set_blank(struct timing_generator *tg,
                bool enable_blanking)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t value = 0;

        set_reg_field_value(
                value,
                1,
                CRTC_DOUBLE_BUFFER_CONTROL,
                CRTC_BLANK_DATA_DOUBLE_BUFFER_EN);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_DOUBLE_BUFFER_CONTROL), value);
        value = 0;

        if (enable_blanking) {
                set_reg_field_value(
                        value,
                        1,
                        CRTC_BLANK_CONTROL,
                        CRTC_BLANK_DATA_EN);

                dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_BLANK_CONTROL), value);

        } else
                dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_BLANK_CONTROL), 0);
}

bool dce110_tg_validate_timing(struct timing_generator *tg,
        const struct dc_crtc_timing *timing)
{
        return dce110_timing_generator_validate_timing(tg, timing, SIGNAL_TYPE_NONE);
}

/* "Container" vs. "pixel" is a concept within HW blocks, mostly those closer to the back-end. It works like this:
 *
 * - In most of the formats (RGB or YCbCr 4:4:4, 4:2:2 uncompressed and DSC 4:2:2 Simple) pixel rate is the same as
 *   container rate.
 *
 * - In 4:2:0 (DSC or uncompressed) there are two pixels per container, hence the target container rate has to be
 *   halved to maintain the correct pixel rate.
 *
 * - Unlike 4:2:2 uncompressed, DSC 4:2:2 Native also has two pixels per container (this happens when DSC is applied
 *   to it) and has to be treated the same as 4:2:0, i.e. target containter rate has to be halved in this case as well.
 *
 */
bool dce110_is_two_pixels_per_container(const struct dc_crtc_timing *timing)
{
        return timing->pixel_encoding == PIXEL_ENCODING_YCBCR420;
}

void dce110_tg_wait_for_state(struct timing_generator *tg,
        enum crtc_state state)
{
        switch (state) {
        case CRTC_STATE_VBLANK:
                dce110_timing_generator_wait_for_vblank(tg);
                break;

        case CRTC_STATE_VACTIVE:
                dce110_timing_generator_wait_for_vactive(tg);
                break;

        default:
                break;
        }
}

void dce110_tg_set_colors(struct timing_generator *tg,
        const struct tg_color *blank_color,
        const struct tg_color *overscan_color)
{
        if (blank_color != NULL)
                dce110_tg_program_blank_color(tg, blank_color);
        if (overscan_color != NULL)
                dce110_tg_set_overscan_color(tg, overscan_color);
}

/* Gets first line of blank region of the display timing for CRTC
 * and programms is as a trigger to fire vertical interrupt
 */
bool dce110_arm_vert_intr(struct timing_generator *tg, uint8_t width)
{
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
        uint32_t v_blank_start = 0;
        uint32_t v_blank_end = 0;
        uint32_t val = 0;
        uint32_t h_position, v_position;

        tg->funcs->get_scanoutpos(
                        tg,
                        &v_blank_start,
                        &v_blank_end,
                        &h_position,
                        &v_position);

        if (v_blank_start == 0 || v_blank_end == 0)
                return false;

        set_reg_field_value(
                val,
                v_blank_start,
                CRTC_VERTICAL_INTERRUPT0_POSITION,
                CRTC_VERTICAL_INTERRUPT0_LINE_START);

        /* Set interval width for interrupt to fire to 1 scanline */
        set_reg_field_value(
                val,
                v_blank_start + width,
                CRTC_VERTICAL_INTERRUPT0_POSITION,
                CRTC_VERTICAL_INTERRUPT0_LINE_END);

        dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_VERTICAL_INTERRUPT0_POSITION), val);

        return true;
}

static bool dce110_is_tg_enabled(struct timing_generator *tg)
{
        uint32_t addr = 0;
        uint32_t value = 0;
        uint32_t field = 0;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        addr = CRTC_REG(mmCRTC_CONTROL);
        value = dm_read_reg(tg->ctx, addr);
        field = get_reg_field_value(value, CRTC_CONTROL,
                                    CRTC_CURRENT_MASTER_EN_STATE);
        return field == 1;
}

bool dce110_configure_crc(struct timing_generator *tg,
                          const struct crc_params *params)
{
        uint32_t cntl_addr = 0;
        uint32_t addr = 0;
        uint32_t value;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        /* Cannot configure crc on a CRTC that is disabled */
        if (!dce110_is_tg_enabled(tg))
                return false;

        cntl_addr = CRTC_REG(mmCRTC_CRC_CNTL);

        if (!params->enable || params->reset)
                /* First, disable CRC before we configure it. */
                dm_write_reg(tg->ctx, cntl_addr, 0);

        if (!params->enable)
                return true;

        /* Program frame boundaries */
        switch (params->crc_eng_inst) {
        case 0:
                /* Window A x axis start and end. */
                value = 0;
                addr = CRTC_REG(mmCRTC_CRC0_WINDOWA_X_CONTROL);
                set_reg_field_value(value, params->windowa_x_start,
                                    CRTC_CRC0_WINDOWA_X_CONTROL,
                                    CRTC_CRC0_WINDOWA_X_START);
                set_reg_field_value(value, params->windowa_x_end,
                                    CRTC_CRC0_WINDOWA_X_CONTROL,
                                    CRTC_CRC0_WINDOWA_X_END);
                dm_write_reg(tg->ctx, addr, value);

                /* Window A y axis start and end. */
                value = 0;
                addr = CRTC_REG(mmCRTC_CRC0_WINDOWA_Y_CONTROL);
                set_reg_field_value(value, params->windowa_y_start,
                                    CRTC_CRC0_WINDOWA_Y_CONTROL,
                                    CRTC_CRC0_WINDOWA_Y_START);
                set_reg_field_value(value, params->windowa_y_end,
                                    CRTC_CRC0_WINDOWA_Y_CONTROL,
                                    CRTC_CRC0_WINDOWA_Y_END);
                dm_write_reg(tg->ctx, addr, value);

                /* Window B x axis start and end. */
                value = 0;
                addr = CRTC_REG(mmCRTC_CRC0_WINDOWB_X_CONTROL);
                set_reg_field_value(value, params->windowb_x_start,
                                    CRTC_CRC0_WINDOWB_X_CONTROL,
                                    CRTC_CRC0_WINDOWB_X_START);
                set_reg_field_value(value, params->windowb_x_end,
                                    CRTC_CRC0_WINDOWB_X_CONTROL,
                                    CRTC_CRC0_WINDOWB_X_END);
                dm_write_reg(tg->ctx, addr, value);

                /* Window B y axis start and end. */
                value = 0;
                addr = CRTC_REG(mmCRTC_CRC0_WINDOWB_Y_CONTROL);
                set_reg_field_value(value, params->windowb_y_start,
                                    CRTC_CRC0_WINDOWB_Y_CONTROL,
                                    CRTC_CRC0_WINDOWB_Y_START);
                set_reg_field_value(value, params->windowb_y_end,
                                    CRTC_CRC0_WINDOWB_Y_CONTROL,
                                    CRTC_CRC0_WINDOWB_Y_END);
                dm_write_reg(tg->ctx, addr, value);

                /* Set crc mode and selection, and enable.*/
                value = 0;
                set_reg_field_value(value, params->continuous_mode ? 1 : 0,
                                    CRTC_CRC_CNTL, CRTC_CRC_CONT_EN);
                set_reg_field_value(value, params->selection,
                                    CRTC_CRC_CNTL, CRTC_CRC0_SELECT);
                set_reg_field_value(value, 1, CRTC_CRC_CNTL, CRTC_CRC_EN);
                dm_write_reg(tg->ctx, cntl_addr, value);
                break;
        case 1:
                /* Window A x axis start and end. */
                value = 0;
                addr = CRTC_REG(mmCRTC_CRC1_WINDOWA_X_CONTROL);
                set_reg_field_value(value, params->windowa_x_start,
                                    CRTC_CRC1_WINDOWA_X_CONTROL,
                                    CRTC_CRC1_WINDOWA_X_START);
                set_reg_field_value(value, params->windowa_x_end,
                                    CRTC_CRC1_WINDOWA_X_CONTROL,
                                    CRTC_CRC1_WINDOWA_X_END);
                dm_write_reg(tg->ctx, addr, value);

                /* Window A y axis start and end. */
                value = 0;
                addr = CRTC_REG(mmCRTC_CRC1_WINDOWA_Y_CONTROL);
                set_reg_field_value(value, params->windowa_y_start,
                                    CRTC_CRC1_WINDOWA_Y_CONTROL,
                                    CRTC_CRC1_WINDOWA_Y_START);
                set_reg_field_value(value, params->windowa_y_end,
                                    CRTC_CRC1_WINDOWA_Y_CONTROL,
                                    CRTC_CRC1_WINDOWA_Y_END);
                dm_write_reg(tg->ctx, addr, value);

                /* Window B x axis start and end. */
                value = 0;
                addr = CRTC_REG(mmCRTC_CRC1_WINDOWB_X_CONTROL);
                set_reg_field_value(value, params->windowb_x_start,
                                    CRTC_CRC1_WINDOWB_X_CONTROL,
                                    CRTC_CRC1_WINDOWB_X_START);
                set_reg_field_value(value, params->windowb_x_end,
                                    CRTC_CRC1_WINDOWB_X_CONTROL,
                                    CRTC_CRC1_WINDOWB_X_END);
                dm_write_reg(tg->ctx, addr, value);

                /* Window B y axis start and end. */
                value = 0;
                addr = CRTC_REG(mmCRTC_CRC1_WINDOWB_Y_CONTROL);
                set_reg_field_value(value, params->windowb_y_start,
                                    CRTC_CRC1_WINDOWB_Y_CONTROL,
                                    CRTC_CRC1_WINDOWB_Y_START);
                set_reg_field_value(value, params->windowb_y_end,
                                    CRTC_CRC1_WINDOWB_Y_CONTROL,
                                    CRTC_CRC1_WINDOWB_Y_END);
                dm_write_reg(tg->ctx, addr, value);

                /* Set crc mode and selection, and enable.*/
                value = 0;
                set_reg_field_value(value, params->continuous_mode ? 1 : 0,
                                    CRTC_CRC_CNTL, CRTC_CRC_CONT_EN);
                set_reg_field_value(value, params->selection,
                                    CRTC_CRC_CNTL, CRTC_CRC1_SELECT);
                set_reg_field_value(value, 1, CRTC_CRC_CNTL, CRTC_CRC_EN);
                dm_write_reg(tg->ctx, cntl_addr, value);
                break;
        default:
                return false;
        }

        return true;
}

bool dce110_get_crc(struct timing_generator *tg, uint8_t idx,
                    uint32_t *r_cr, uint32_t *g_y, uint32_t *b_cb)
{
        uint32_t addr = 0;
        uint32_t value = 0;
        uint32_t field = 0;
        struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);

        addr = CRTC_REG(mmCRTC_CRC_CNTL);
        value = dm_read_reg(tg->ctx, addr);
        field = get_reg_field_value(value, CRTC_CRC_CNTL, CRTC_CRC_EN);

        /* Early return if CRC is not enabled for this CRTC */
        if (!field)
                return false;

        switch (idx) {
        case 0:
                addr = CRTC_REG(mmCRTC_CRC0_DATA_RG);
                value = dm_read_reg(tg->ctx, addr);
                *r_cr = get_reg_field_value(value, CRTC_CRC0_DATA_RG, CRC0_R_CR);
                *g_y = get_reg_field_value(value, CRTC_CRC0_DATA_RG, CRC0_G_Y);

                addr = CRTC_REG(mmCRTC_CRC0_DATA_B);
                value = dm_read_reg(tg->ctx, addr);
                *b_cb = get_reg_field_value(value, CRTC_CRC0_DATA_B, CRC0_B_CB);
                break;
        case 1:
                addr = CRTC_REG(mmCRTC_CRC1_DATA_RG);
                value = dm_read_reg(tg->ctx, addr);
                *r_cr = get_reg_field_value(value, CRTC_CRC1_DATA_RG, CRC1_R_CR);
                *g_y = get_reg_field_value(value, CRTC_CRC1_DATA_RG, CRC1_G_Y);

                addr = CRTC_REG(mmCRTC_CRC1_DATA_B);
                value = dm_read_reg(tg->ctx, addr);
                *b_cb = get_reg_field_value(value, CRTC_CRC1_DATA_B, CRC1_B_CB);
                break;
        default:
                return false;
        }

        return true;
}

static const struct timing_generator_funcs dce110_tg_funcs = {
                .validate_timing = dce110_tg_validate_timing,
                .program_timing = dce110_tg_program_timing,
                .enable_crtc = dce110_timing_generator_enable_crtc,
                .disable_crtc = dce110_timing_generator_disable_crtc,
                .is_counter_moving = dce110_timing_generator_is_counter_moving,
                .get_position = dce110_timing_generator_get_position,
                .get_frame_count = dce110_timing_generator_get_vblank_counter,
                .get_scanoutpos = dce110_timing_generator_get_crtc_scanoutpos,
                .set_early_control = dce110_timing_generator_set_early_control,
                .wait_for_state = dce110_tg_wait_for_state,
                .set_blank = dce110_tg_set_blank,
                .is_blanked = dce110_tg_is_blanked,
                .set_colors = dce110_tg_set_colors,
                .set_overscan_blank_color =
                                dce110_timing_generator_set_overscan_color_black,
                .set_blank_color = dce110_timing_generator_program_blank_color,
                .disable_vga = dce110_timing_generator_disable_vga,
                .did_triggered_reset_occur =
                                dce110_timing_generator_did_triggered_reset_occur,
                .setup_global_swap_lock =
                                dce110_timing_generator_setup_global_swap_lock,
                .enable_reset_trigger = dce110_timing_generator_enable_reset_trigger,
                .enable_crtc_reset = dce110_timing_generator_enable_crtc_reset,
                .disable_reset_trigger = dce110_timing_generator_disable_reset_trigger,
                .tear_down_global_swap_lock =
                                dce110_timing_generator_tear_down_global_swap_lock,
                .enable_advanced_request =
                                dce110_timing_generator_enable_advanced_request,
                .set_drr =
                                dce110_timing_generator_set_drr,
                .get_last_used_drr_vtotal = NULL,
                .set_static_screen_control =
                        dce110_timing_generator_set_static_screen_control,
                .set_test_pattern = dce110_timing_generator_set_test_pattern,
                .arm_vert_intr = dce110_arm_vert_intr,
                .is_tg_enabled = dce110_is_tg_enabled,
                .configure_crc = dce110_configure_crc,
                .get_crc = dce110_get_crc,
                .is_two_pixels_per_container = dce110_is_two_pixels_per_container,
};

void dce110_timing_generator_construct(
        struct dce110_timing_generator *tg110,
        struct dc_context *ctx,
        uint32_t instance,
        const struct dce110_timing_generator_offsets *offsets)
{
        tg110->controller_id = CONTROLLER_ID_D0 + instance;
        tg110->base.inst = instance;

        tg110->offsets = *offsets;

        tg110->base.funcs = &dce110_tg_funcs;

        tg110->base.ctx = ctx;
        tg110->base.bp = ctx->dc_bios;

        tg110->max_h_total = CRTC_H_TOTAL__CRTC_H_TOTAL_MASK + 1;
        tg110->max_v_total = CRTC_V_TOTAL__CRTC_V_TOTAL_MASK + 1;

        tg110->min_h_blank = 56;
        tg110->min_h_front_porch = 4;
        tg110->min_h_back_porch = 4;
}