/*
 * Copyright 2021 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 "dccg.h"
#include "clk_mgr_internal.h"

// For dce12_get_dp_ref_freq_khz
#include "dce100/dce_clk_mgr.h"
// For dcn20_update_clocks_update_dpp_dto
#include "dcn20/dcn20_clk_mgr.h"
#include "dcn31/dcn31_clk_mgr.h"
#include "dcn316_clk_mgr.h"
#include "reg_helper.h"
#include "core_types.h"
#include "dcn316_smu.h"
#include "dm_helpers.h"
#include "dc_dmub_srv.h"
#include "link_service.h"

// DCN316 this is CLK1 instance
#define MAX_INSTANCE                                        7
#define MAX_SEGMENT                                         6

struct IP_BASE_INSTANCE {
    unsigned int segment[MAX_SEGMENT];
};

struct IP_BASE {
    struct IP_BASE_INSTANCE instance[MAX_INSTANCE];
};

#define regCLK1_CLK_PLL_REQ                                             0x0237
#define regCLK1_CLK_PLL_REQ_BASE_IDX                    0

#define CLK1_CLK_PLL_REQ__FbMult_int__SHIFT             0x0
#define CLK1_CLK_PLL_REQ__PllSpineDiv__SHIFT    0xc
#define CLK1_CLK_PLL_REQ__FbMult_frac__SHIFT    0x10
#define CLK1_CLK_PLL_REQ__FbMult_int_MASK               0x000001FFL
#define CLK1_CLK_PLL_REQ__PllSpineDiv_MASK              0x0000F000L
#define CLK1_CLK_PLL_REQ__FbMult_frac_MASK              0xFFFF0000L

#define TO_CLK_MGR_DCN316(clk_mgr)\
        container_of(clk_mgr, struct clk_mgr_dcn316, base)

static int dcn316_get_active_display_cnt_wa(
                struct dc *dc,
                struct dc_state *context)
{
        int i, display_count;
        bool tmds_present = false;

        display_count = 0;
        for (i = 0; i < context->stream_count; i++) {
                const struct dc_stream_state *stream = context->streams[i];

                if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A ||
                                stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK ||
                                stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK)
                        tmds_present = true;
        }

        for (i = 0; i < dc->link_count; i++) {
                const struct dc_link *link = dc->links[i];

                /* abusing the fact that the dig and phy are coupled to see if the phy is enabled */
                if (link->link_enc && link->link_enc->funcs->is_dig_enabled &&
                                link->link_enc->funcs->is_dig_enabled(link->link_enc))
                        display_count++;
        }

        /* WA for hang on HDMI after display off back back on*/
        if (display_count == 0 && tmds_present)
                display_count = 1;

        return display_count;
}

static void dcn316_disable_otg_wa(struct clk_mgr *clk_mgr_base, struct dc_state *context,
                bool safe_to_lower, bool disable)
{
        struct dc *dc = clk_mgr_base->ctx->dc;
        int i;

        for (i = 0; i < dc->res_pool->pipe_count; ++i) {
                struct pipe_ctx *pipe = safe_to_lower
                        ? &context->res_ctx.pipe_ctx[i]
                        : &dc->current_state->res_ctx.pipe_ctx[i];

                if (pipe->top_pipe || pipe->prev_odm_pipe)
                        continue;
                if (pipe->stream && (pipe->stream->dpms_off || dc_is_virtual_signal(pipe->stream->signal) ||
                                     !pipe->stream->link_enc)) {
                        if (disable) {
                                if (pipe->stream_res.tg && pipe->stream_res.tg->funcs->immediate_disable_crtc)
                                        pipe->stream_res.tg->funcs->immediate_disable_crtc(pipe->stream_res.tg);

                                reset_sync_context_for_pipe(dc, context, i);
                        } else
                                pipe->stream_res.tg->funcs->enable_crtc(pipe->stream_res.tg);
                }
        }
}

static void dcn316_enable_pme_wa(struct clk_mgr *clk_mgr_base)
{
        struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);

        dcn316_smu_enable_pme_wa(clk_mgr);
}

static void dcn316_update_clocks(struct clk_mgr *clk_mgr_base,
                        struct dc_state *context,
                        bool safe_to_lower)
{
        union dmub_rb_cmd cmd;
        struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
        struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk;
        struct dc *dc = clk_mgr_base->ctx->dc;
        int display_count = 0;
        bool update_dppclk = false;
        bool update_dispclk = false;
        bool dpp_clock_lowered = false;

        if (dc->work_arounds.skip_clock_update)
                return;

        /*
         * if it is safe to lower, but we are already in the lower state, we don't have to do anything
         * also if safe to lower is false, we just go in the higher state
         */
        clk_mgr_base->clks.zstate_support = new_clocks->zstate_support;
        if (safe_to_lower) {
                if (clk_mgr_base->clks.dtbclk_en && !new_clocks->dtbclk_en) {
                        dcn316_smu_set_dtbclk(clk_mgr, false);
                        clk_mgr_base->clks.dtbclk_en = new_clocks->dtbclk_en;
                }
                /* check that we're not already in lower */
                if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_LOW_POWER) {
                        display_count = dcn316_get_active_display_cnt_wa(dc, context);
                        /* if we can go lower, go lower */
                        if (display_count == 0) {
                                union display_idle_optimization_u idle_info = { 0 };
                                idle_info.idle_info.df_request_disabled = 1;
                                idle_info.idle_info.phy_ref_clk_off = 1;
                                idle_info.idle_info.s0i2_rdy = 1;
                                dcn316_smu_set_display_idle_optimization(clk_mgr, idle_info.data);
                                /* update power state */
                                clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_LOW_POWER;
                        }
                }
        } else {
                if (!clk_mgr_base->clks.dtbclk_en && new_clocks->dtbclk_en) {
                        dcn316_smu_set_dtbclk(clk_mgr, true);
                        clk_mgr_base->clks.dtbclk_en = new_clocks->dtbclk_en;
                }

                /* check that we're not already in D0 */
                if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_MISSION_MODE) {
                        union display_idle_optimization_u idle_info = { 0 };
                        dcn316_smu_set_display_idle_optimization(clk_mgr, idle_info.data);
                        /* update power state */
                        clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_MISSION_MODE;
                }
        }

        if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, clk_mgr_base->clks.dcfclk_khz)) {
                clk_mgr_base->clks.dcfclk_khz = new_clocks->dcfclk_khz;
                dcn316_smu_set_hard_min_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_khz);
        }

        if (should_set_clock(safe_to_lower,
                        new_clocks->dcfclk_deep_sleep_khz, clk_mgr_base->clks.dcfclk_deep_sleep_khz)) {
                clk_mgr_base->clks.dcfclk_deep_sleep_khz = new_clocks->dcfclk_deep_sleep_khz;
                dcn316_smu_set_min_deep_sleep_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_deep_sleep_khz);
        }

        // workaround: Limit dppclk to 100Mhz to avoid lower eDP panel switch to plus 4K monitor underflow.
        if (new_clocks->dppclk_khz < 100000)
                new_clocks->dppclk_khz = 100000;

        if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr->base.clks.dppclk_khz)) {
                if (clk_mgr->base.clks.dppclk_khz > new_clocks->dppclk_khz)
                        dpp_clock_lowered = true;
                clk_mgr_base->clks.dppclk_khz = new_clocks->dppclk_khz;
                update_dppclk = true;
        }

        if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz) &&
            (new_clocks->dispclk_khz > 0 || (safe_to_lower && display_count == 0))) {
                int requested_dispclk_khz = new_clocks->dispclk_khz;

                dcn316_disable_otg_wa(clk_mgr_base, context, safe_to_lower, true);

                /* Clamp the requested clock to PMFW based on their limit. */
                if (dc->debug.min_disp_clk_khz > 0 && requested_dispclk_khz < dc->debug.min_disp_clk_khz)
                        requested_dispclk_khz = dc->debug.min_disp_clk_khz;

                dcn316_smu_set_dispclk(clk_mgr, requested_dispclk_khz);
                clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz;
                dcn316_disable_otg_wa(clk_mgr_base, context, safe_to_lower, false);

                update_dispclk = true;
        }

        if (dpp_clock_lowered) {
                // increase per DPP DTO before lowering global dppclk
                dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
                dcn316_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz);
        } else {
                // increase global DPPCLK before lowering per DPP DTO
                if (update_dppclk || update_dispclk)
                        dcn316_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz);
                // always update dtos unless clock is lowered and not safe to lower
                if (new_clocks->dppclk_khz >= dc->current_state->bw_ctx.bw.dcn.clk.dppclk_khz)
                        dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
        }

        // notify DMCUB of latest clocks
        memset(&cmd, 0, sizeof(cmd));
        cmd.notify_clocks.header.type = DMUB_CMD__CLK_MGR;
        cmd.notify_clocks.header.sub_type = DMUB_CMD__CLK_MGR_NOTIFY_CLOCKS;
        cmd.notify_clocks.clocks.dcfclk_khz = clk_mgr_base->clks.dcfclk_khz;
        cmd.notify_clocks.clocks.dcfclk_deep_sleep_khz =
                clk_mgr_base->clks.dcfclk_deep_sleep_khz;
        cmd.notify_clocks.clocks.dispclk_khz = clk_mgr_base->clks.dispclk_khz;
        cmd.notify_clocks.clocks.dppclk_khz = clk_mgr_base->clks.dppclk_khz;

        dc_wake_and_execute_dmub_cmd(dc->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
}

static void dcn316_dump_clk_registers(struct clk_state_registers_and_bypass *regs_and_bypass,
                struct clk_mgr *clk_mgr_base, struct clk_log_info *log_info)
{
        return;
}

static struct clk_bw_params dcn316_bw_params = {
        .vram_type = Ddr4MemType,
        .num_channels = 1,
        .clk_table = {
                .num_entries = 5,
        },

};

static struct wm_table ddr4_wm_table = {
        .entries = {
                {
                        .wm_inst = WM_A,
                        .wm_type = WM_TYPE_PSTATE_CHG,
                        .pstate_latency_us = 11.72,
                        .sr_exit_time_us = 6.09,
                        .sr_enter_plus_exit_time_us = 7.14,
                        .valid = true,
                },
                {
                        .wm_inst = WM_B,
                        .wm_type = WM_TYPE_PSTATE_CHG,
                        .pstate_latency_us = 11.72,
                        .sr_exit_time_us = 10.12,
                        .sr_enter_plus_exit_time_us = 11.48,
                        .valid = true,
                },
                {
                        .wm_inst = WM_C,
                        .wm_type = WM_TYPE_PSTATE_CHG,
                        .pstate_latency_us = 11.72,
                        .sr_exit_time_us = 10.12,
                        .sr_enter_plus_exit_time_us = 11.48,
                        .valid = true,
                },
                {
                        .wm_inst = WM_D,
                        .wm_type = WM_TYPE_PSTATE_CHG,
                        .pstate_latency_us = 11.72,
                        .sr_exit_time_us = 10.12,
                        .sr_enter_plus_exit_time_us = 11.48,
                        .valid = true,
                },
        }
};

static struct wm_table lpddr5_wm_table = {
        .entries = {
                {
                        .wm_inst = WM_A,
                        .wm_type = WM_TYPE_PSTATE_CHG,
                        .pstate_latency_us = 11.65333,
                        .sr_exit_time_us = 11.5,
                        .sr_enter_plus_exit_time_us = 14.5,
                        .valid = true,
                },
                {
                        .wm_inst = WM_B,
                        .wm_type = WM_TYPE_PSTATE_CHG,
                        .pstate_latency_us = 11.65333,
                        .sr_exit_time_us = 11.5,
                        .sr_enter_plus_exit_time_us = 14.5,
                        .valid = true,
                },
                {
                        .wm_inst = WM_C,
                        .wm_type = WM_TYPE_PSTATE_CHG,
                        .pstate_latency_us = 11.65333,
                        .sr_exit_time_us = 11.5,
                        .sr_enter_plus_exit_time_us = 14.5,
                        .valid = true,
                },
                {
                        .wm_inst = WM_D,
                        .wm_type = WM_TYPE_PSTATE_CHG,
                        .pstate_latency_us = 11.65333,
                        .sr_exit_time_us = 11.5,
                        .sr_enter_plus_exit_time_us = 14.5,
                        .valid = true,
                },
        }
};

static DpmClocks_316_t dummy_clocks;

static struct dcn316_watermarks dummy_wms = { 0 };

static void dcn316_build_watermark_ranges(struct clk_bw_params *bw_params, struct dcn316_watermarks *table)
{
        int i, num_valid_sets;

        num_valid_sets = 0;

        for (i = 0; i < WM_SET_COUNT; i++) {
                /* skip empty entries, the smu array has no holes*/
                if (!bw_params->wm_table.entries[i].valid)
                        continue;

                table->WatermarkRow[WM_DCFCLK][num_valid_sets].WmSetting = bw_params->wm_table.entries[i].wm_inst;
                table->WatermarkRow[WM_DCFCLK][num_valid_sets].WmType = bw_params->wm_table.entries[i].wm_type;
                /* We will not select WM based on fclk, so leave it as unconstrained */
                table->WatermarkRow[WM_DCFCLK][num_valid_sets].MinClock = 0;
                table->WatermarkRow[WM_DCFCLK][num_valid_sets].MaxClock = 0xFFFF;

                if (table->WatermarkRow[WM_DCFCLK][num_valid_sets].WmType == WM_TYPE_PSTATE_CHG) {
                        if (i == 0)
                                table->WatermarkRow[WM_DCFCLK][num_valid_sets].MinMclk = 0;
                        else {
                                /* add 1 to make it non-overlapping with next lvl */
                                table->WatermarkRow[WM_DCFCLK][num_valid_sets].MinMclk =
                                                bw_params->clk_table.entries[i - 1].dcfclk_mhz + 1;
                        }
                        table->WatermarkRow[WM_DCFCLK][num_valid_sets].MaxMclk =
                                        bw_params->clk_table.entries[i].dcfclk_mhz;

                } else {
                        /* unconstrained for memory retraining */
                        table->WatermarkRow[WM_DCFCLK][num_valid_sets].MinClock = 0;
                        table->WatermarkRow[WM_DCFCLK][num_valid_sets].MaxClock = 0xFFFF;

                        /* Modify previous watermark range to cover up to max */
                        table->WatermarkRow[WM_DCFCLK][num_valid_sets - 1].MaxClock = 0xFFFF;
                }
                num_valid_sets++;
        }

        ASSERT(num_valid_sets != 0); /* Must have at least one set of valid watermarks */

        /* modify the min and max to make sure we cover the whole range*/
        table->WatermarkRow[WM_DCFCLK][0].MinMclk = 0;
        table->WatermarkRow[WM_DCFCLK][0].MinClock = 0;
        table->WatermarkRow[WM_DCFCLK][num_valid_sets - 1].MaxMclk = 0xFFFF;
        table->WatermarkRow[WM_DCFCLK][num_valid_sets - 1].MaxClock = 0xFFFF;

        /* This is for writeback only, does not matter currently as no writeback support*/
        table->WatermarkRow[WM_SOCCLK][0].WmSetting = WM_A;
        table->WatermarkRow[WM_SOCCLK][0].MinClock = 0;
        table->WatermarkRow[WM_SOCCLK][0].MaxClock = 0xFFFF;
        table->WatermarkRow[WM_SOCCLK][0].MinMclk = 0;
        table->WatermarkRow[WM_SOCCLK][0].MaxMclk = 0xFFFF;
}

static void dcn316_notify_wm_ranges(struct clk_mgr *clk_mgr_base)
{
        struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
        struct clk_mgr_dcn316 *clk_mgr_dcn316 = TO_CLK_MGR_DCN316(clk_mgr);
        struct dcn316_watermarks *table = clk_mgr_dcn316->smu_wm_set.wm_set;

        if (!clk_mgr->smu_ver)
                return;

        if (!table || clk_mgr_dcn316->smu_wm_set.mc_address.quad_part == 0)
                return;

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

        dcn316_build_watermark_ranges(clk_mgr_base->bw_params, table);

        dcn316_smu_set_dram_addr_high(clk_mgr,
                        clk_mgr_dcn316->smu_wm_set.mc_address.high_part);
        dcn316_smu_set_dram_addr_low(clk_mgr,
                        clk_mgr_dcn316->smu_wm_set.mc_address.low_part);
        dcn316_smu_transfer_wm_table_dram_2_smu(clk_mgr);
}

static void dcn316_get_dpm_table_from_smu(struct clk_mgr_internal *clk_mgr,
                struct dcn316_smu_dpm_clks *smu_dpm_clks)
{
        DpmClocks_316_t *table = smu_dpm_clks->dpm_clks;

        if (!clk_mgr->smu_ver)
                return;

        if (!table || smu_dpm_clks->mc_address.quad_part == 0)
                return;

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

        dcn316_smu_set_dram_addr_high(clk_mgr,
                        smu_dpm_clks->mc_address.high_part);
        dcn316_smu_set_dram_addr_low(clk_mgr,
                        smu_dpm_clks->mc_address.low_part);
        dcn316_smu_transfer_dpm_table_smu_2_dram(clk_mgr);
}

static uint32_t find_max_clk_value(const uint32_t clocks[], uint32_t num_clocks)
{
        uint32_t max = 0;
        int i;

        for (i = 0; i < num_clocks; ++i) {
                if (clocks[i] > max)
                        max = clocks[i];
        }

        return max;
}

static unsigned int find_clk_for_voltage(
                const DpmClocks_316_t *clock_table,
                const uint32_t clocks[],
                unsigned int voltage)
{
        int i;
        int max_voltage = 0;
        int clock = 0;

        for (i = 0; i < NUM_SOC_VOLTAGE_LEVELS; i++) {
                if (clock_table->SocVoltage[i] == voltage) {
                        return clocks[i];
                } else if (clock_table->SocVoltage[i] >= max_voltage &&
                                clock_table->SocVoltage[i] < voltage) {
                        max_voltage = clock_table->SocVoltage[i];
                        clock = clocks[i];
                }
        }

        ASSERT(clock);
        return clock;
}

static void dcn316_clk_mgr_helper_populate_bw_params(
                struct clk_mgr_internal *clk_mgr,
                struct integrated_info *bios_info,
                const DpmClocks_316_t *clock_table)
{
        int i, j;
        struct clk_bw_params *bw_params = clk_mgr->base.bw_params;
        uint32_t max_dispclk = 0, max_dppclk = 0;

        j = -1;

        static_assert(NUM_DF_PSTATE_LEVELS <= MAX_NUM_DPM_LVL,
                "number of reported pstate levels exceeds maximum");

        /* Find lowest DPM, FCLK is filled in reverse order*/

        for (i = NUM_DF_PSTATE_LEVELS - 1; i >= 0; i--) {
                if (clock_table->DfPstateTable[i].FClk != 0) {
                        j = i;
                        break;
                }
        }

        if (j == -1) {
                /* clock table is all 0s, just use our own hardcode */
                ASSERT(0);
                return;
        }

        bw_params->clk_table.num_entries = j + 1;

        /* dispclk and dppclk can be max at any voltage, same number of levels for both */
        if (clock_table->NumDispClkLevelsEnabled <= NUM_DISPCLK_DPM_LEVELS &&
            clock_table->NumDispClkLevelsEnabled <= NUM_DPPCLK_DPM_LEVELS) {
                max_dispclk = find_max_clk_value(clock_table->DispClocks, clock_table->NumDispClkLevelsEnabled);
                max_dppclk = find_max_clk_value(clock_table->DppClocks, clock_table->NumDispClkLevelsEnabled);
        } else {
                ASSERT(0);
        }

        for (i = 0; i < bw_params->clk_table.num_entries; i++, j--) {
                int temp;

                bw_params->clk_table.entries[i].fclk_mhz = clock_table->DfPstateTable[j].FClk;
                bw_params->clk_table.entries[i].memclk_mhz = clock_table->DfPstateTable[j].MemClk;
                bw_params->clk_table.entries[i].voltage = clock_table->DfPstateTable[j].Voltage;
                switch (clock_table->DfPstateTable[j].WckRatio) {
                case WCK_RATIO_1_2:
                        bw_params->clk_table.entries[i].wck_ratio = 2;
                        break;
                case WCK_RATIO_1_4:
                        bw_params->clk_table.entries[i].wck_ratio = 4;
                        break;
                default:
                        bw_params->clk_table.entries[i].wck_ratio = 1;
                }
                temp = find_clk_for_voltage(clock_table, clock_table->DcfClocks, clock_table->DfPstateTable[j].Voltage);
                if (temp)
                        bw_params->clk_table.entries[i].dcfclk_mhz = temp;
                temp = find_clk_for_voltage(clock_table, clock_table->SocClocks, clock_table->DfPstateTable[j].Voltage);
                if (temp)
                        bw_params->clk_table.entries[i].socclk_mhz = temp;
                bw_params->clk_table.entries[i].dispclk_mhz = max_dispclk;
                bw_params->clk_table.entries[i].dppclk_mhz = max_dppclk;
        }

        bw_params->vram_type = bios_info->memory_type;
        bw_params->num_channels = bios_info->ma_channel_number;
        bw_params->dram_channel_width_bytes = bios_info->memory_type == 0x22 ? 8 : 4;

        for (i = 0; i < WM_SET_COUNT; i++) {
                bw_params->wm_table.entries[i].wm_inst = i;

                if (i >= bw_params->clk_table.num_entries) {
                        bw_params->wm_table.entries[i].valid = false;
                        continue;
                }

                bw_params->wm_table.entries[i].wm_type = WM_TYPE_PSTATE_CHG;
                bw_params->wm_table.entries[i].valid = true;
        }
}



static struct clk_mgr_funcs dcn316_funcs = {
        .enable_pme_wa = dcn316_enable_pme_wa,
        .get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz,
        .get_dtb_ref_clk_frequency = dcn31_get_dtb_ref_freq_khz,
        .update_clocks = dcn316_update_clocks,
        .init_clocks = dcn31_init_clocks,
        .are_clock_states_equal = dcn31_are_clock_states_equal,
        .notify_wm_ranges = dcn316_notify_wm_ranges
};
extern struct clk_mgr_funcs dcn3_fpga_funcs;

void dcn316_clk_mgr_construct(
                struct dc_context *ctx,
                struct clk_mgr_dcn316 *clk_mgr,
                struct pp_smu_funcs *pp_smu,
                struct dccg *dccg)
{
        struct dcn316_smu_dpm_clks smu_dpm_clks = { 0 };
        struct clk_log_info log_info = {0};

        clk_mgr->base.base.ctx = ctx;
        clk_mgr->base.base.funcs = &dcn316_funcs;

        clk_mgr->base.pp_smu = pp_smu;

        clk_mgr->base.dccg = dccg;
        clk_mgr->base.dfs_bypass_disp_clk = 0;

        clk_mgr->base.dprefclk_ss_percentage = 0;
        clk_mgr->base.dprefclk_ss_divider = 1000;
        clk_mgr->base.ss_on_dprefclk = false;
        clk_mgr->base.dfs_ref_freq_khz = 48000;

        clk_mgr->smu_wm_set.wm_set = (struct dcn316_watermarks *)dm_helpers_allocate_gpu_mem(
                                clk_mgr->base.base.ctx,
                                DC_MEM_ALLOC_TYPE_FRAME_BUFFER,
                                sizeof(struct dcn316_watermarks),
                                &clk_mgr->smu_wm_set.mc_address.quad_part);

        if (!clk_mgr->smu_wm_set.wm_set) {
                clk_mgr->smu_wm_set.wm_set = &dummy_wms;
                clk_mgr->smu_wm_set.mc_address.quad_part = 0;
        }
        ASSERT(clk_mgr->smu_wm_set.wm_set);

        smu_dpm_clks.dpm_clks = (DpmClocks_316_t *)dm_helpers_allocate_gpu_mem(
                                clk_mgr->base.base.ctx,
                                DC_MEM_ALLOC_TYPE_FRAME_BUFFER,
                                sizeof(DpmClocks_316_t),
                                &smu_dpm_clks.mc_address.quad_part);

        if (smu_dpm_clks.dpm_clks == NULL) {
                smu_dpm_clks.dpm_clks = &dummy_clocks;
                smu_dpm_clks.mc_address.quad_part = 0;
        }

        ASSERT(smu_dpm_clks.dpm_clks);

        clk_mgr->base.smu_ver = dcn316_smu_get_smu_version(&clk_mgr->base);

        if (clk_mgr->base.smu_ver > 0)
                clk_mgr->base.smu_present = true;

        // Skip this for now as it did not work on DCN315, renable during bring up
        //clk_mgr->base.base.dentist_vco_freq_khz = get_vco_frequency_from_reg(&clk_mgr->base);
        clk_mgr->base.base.dentist_vco_freq_khz = 2500000;

        /* in case we don't get a value from the register, use default */
        if (clk_mgr->base.base.dentist_vco_freq_khz == 0)
                clk_mgr->base.base.dentist_vco_freq_khz = 2500000; /* 2400MHz */


        if (ctx->dc_bios->integrated_info->memory_type == LpDdr5MemType) {
                dcn316_bw_params.wm_table = lpddr5_wm_table;
        } else {
                dcn316_bw_params.wm_table = ddr4_wm_table;
        }
        /* Saved clocks configured at boot for debug purposes */
        dcn316_dump_clk_registers(&clk_mgr->base.base.boot_snapshot,
                                  &clk_mgr->base.base, &log_info);

        clk_mgr->base.base.dprefclk_khz = 600000;
        clk_mgr->base.base.dprefclk_khz = dcn316_smu_get_dpref_clk(&clk_mgr->base);
        clk_mgr->base.base.clks.ref_dtbclk_khz = clk_mgr->base.base.dprefclk_khz;
        dce_clock_read_ss_info(&clk_mgr->base);
        /*clk_mgr->base.dccg->ref_dtbclk_khz =
        dce_adjust_dp_ref_freq_for_ss(&clk_mgr->base, clk_mgr->base.base.dprefclk_khz);*/

        clk_mgr->base.base.bw_params = &dcn316_bw_params;

        if (clk_mgr->base.base.ctx->dc->debug.pstate_enabled) {
                dcn316_get_dpm_table_from_smu(&clk_mgr->base, &smu_dpm_clks);

                if (ctx->dc_bios->integrated_info) {
                        dcn316_clk_mgr_helper_populate_bw_params(
                                        &clk_mgr->base,
                                        ctx->dc_bios->integrated_info,
                                        smu_dpm_clks.dpm_clks);
                }
        }

        if (smu_dpm_clks.dpm_clks && smu_dpm_clks.mc_address.quad_part != 0)
                dm_helpers_free_gpu_mem(clk_mgr->base.base.ctx, DC_MEM_ALLOC_TYPE_FRAME_BUFFER,
                                smu_dpm_clks.dpm_clks);
}

void dcn316_clk_mgr_destroy(struct clk_mgr_internal *clk_mgr_int)
{
        struct clk_mgr_dcn316 *clk_mgr = TO_CLK_MGR_DCN316(clk_mgr_int);

        if (clk_mgr->smu_wm_set.wm_set && clk_mgr->smu_wm_set.mc_address.quad_part != 0)
                dm_helpers_free_gpu_mem(clk_mgr_int->base.ctx, DC_MEM_ALLOC_TYPE_FRAME_BUFFER,
                                clk_mgr->smu_wm_set.wm_set);
}