drm/amd/display: remove dead display clock code

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

9 files changed, 29 insertions, 1647 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/gpu/dce110/display_clock_dce110.c b/drivers/gpu/drm/amd/display/dc/gpu/dce110/display_clock_dce110.c
index 1bc39f12b6a1..cc13afa326ad 100644
--- a/drivers/gpu/drm/amd/display/dc/gpu/dce110/display_clock_dce110.c
+++ b/drivers/gpu/drm/amd/display/dc/gpu/dce110/display_clock_dce110.c
@@ -268,404 +268,6 @@ static void destroy(struct display_clock **base)
 	*base = NULL;
 }
 
-static uint32_t get_validation_clock(struct display_clock *dc)
-{
-	uint32_t clk = 0;
-	struct display_clock_dce110 *disp_clk = DCLCK110_FROM_BASE(dc);
-
-	switch (disp_clk->max_clks_state) {
-	case CLOCKS_STATE_ULTRA_LOW:
-		/*Currently not supported, it has 0 in table entry*/
-	case CLOCKS_STATE_LOW:
-		clk = max_clks_by_state[CLOCKS_STATE_LOW].
-						display_clk_khz;
-		break;
-
-	case CLOCKS_STATE_NOMINAL:
-		clk = max_clks_by_state[CLOCKS_STATE_NOMINAL].
-						display_clk_khz;
-		break;
-
-	case CLOCKS_STATE_PERFORMANCE:
-		clk = max_clks_by_state[CLOCKS_STATE_PERFORMANCE].
-						display_clk_khz;
-		break;
-
-	case CLOCKS_STATE_INVALID:
-	default:
-		/*Invalid Clocks State*/
-		dm_logger_write(dc->ctx->logger, LOG_WARNING,
-				"Invalid clock state");
-		/* just return the display engine clock for
-		 * lowest supported state*/
-		clk = max_clks_by_state[CLOCKS_STATE_LOW].
-						display_clk_khz;
-		break;
-	}
-	return clk;
-}
-
-static struct fixed32_32 get_deep_color_factor(struct min_clock_params *params)
-{
-	/* DeepColorFactor = IF (HDMI = True, bpp / 24, 1)*/
-	struct fixed32_32 deep_color_factor = dal_fixed32_32_from_int(1);
-
-	if (params->signal_type != SIGNAL_TYPE_HDMI_TYPE_A)
-		return deep_color_factor;
-
-	switch (params->deep_color_depth) {
-	case COLOR_DEPTH_101010:
-		/*deep color ratio for 30bpp is 30/24 = 1.25*/
-		deep_color_factor = dal_fixed32_32_from_fraction(30, 24);
-		break;
-
-	case COLOR_DEPTH_121212:
-		/* deep color ratio for 36bpp is 36/24 = 1.5*/
-		deep_color_factor = dal_fixed32_32_from_fraction(36, 24);
-		break;
-
-	case COLOR_DEPTH_161616:
-		/* deep color ratio for 48bpp is 48/24 = 2.0 */
-		deep_color_factor = dal_fixed32_32_from_fraction(48, 24);
-		break;
-	default:
-		break;
-	}
-	return deep_color_factor;
-}
-
-static struct fixed32_32 get_scaler_efficiency(
-	struct dc_context *ctx,
-	struct min_clock_params *params)
-{
-	struct fixed32_32 scaler_efficiency = dal_fixed32_32_from_int(3);
-
-	if (params->scaler_efficiency == V_SCALER_EFFICIENCY_LB18BPP) {
-		scaler_efficiency =
-			dal_fixed32_32_add(
-				dal_fixed32_32_from_fraction(35555, 10000),
-				dal_fixed32_32_from_fraction(
-					55556,
-					100000 * 10000));
-	} else if (params->scaler_efficiency == V_SCALER_EFFICIENCY_LB24BPP) {
-		scaler_efficiency =
-			dal_fixed32_32_add(
-				dal_fixed32_32_from_fraction(34285, 10000),
-				dal_fixed32_32_from_fraction(
-					71429,
-					100000 * 10000));
-	} else if (params->scaler_efficiency == V_SCALER_EFFICIENCY_LB30BPP)
-		scaler_efficiency = dal_fixed32_32_from_fraction(32, 10);
-
-	return scaler_efficiency;
-}
-
-static struct fixed32_32 get_lb_lines_in_per_line_out(
-		struct min_clock_params *params,
-		struct fixed32_32 v_scale_ratio)
-{
-	struct fixed32_32 two = dal_fixed32_32_from_int(2);
-	struct fixed32_32 four = dal_fixed32_32_from_int(4);
-	struct fixed32_32 f4_to_3 = dal_fixed32_32_from_fraction(4, 3);
-	struct fixed32_32 f6_to_4 = dal_fixed32_32_from_fraction(6, 4);
-
-	if (params->line_buffer_prefetch_enabled)
-		return dal_fixed32_32_max(v_scale_ratio, dal_fixed32_32_one);
-	else if (dal_fixed32_32_le(v_scale_ratio, dal_fixed32_32_one))
-		return dal_fixed32_32_one;
-	else if (dal_fixed32_32_le(v_scale_ratio, f4_to_3))
-		return f4_to_3;
-	else if (dal_fixed32_32_le(v_scale_ratio, f6_to_4))
-		return f6_to_4;
-	else if (dal_fixed32_32_le(v_scale_ratio, two))
-		return two;
-	else if (dal_fixed32_32_le(v_scale_ratio, dal_fixed32_32_from_int(3)))
-		return four;
-	else
-		return dal_fixed32_32_zero;
-}
-
-static uint32_t get_actual_required_display_clk(
-	struct display_clock_dce110 *disp_clk,
-	uint32_t target_clk_khz)
-{
-	uint32_t disp_clk_khz = target_clk_khz;
-	uint32_t div = INVALID_DIVIDER;
-	uint32_t did = INVALID_DID;
-	uint32_t scaled_vco =
-		disp_clk->dentist_vco_freq_khz * DIVIDER_RANGE_SCALE_FACTOR;
-
-	ASSERT_CRITICAL(!!disp_clk_khz);
-
-	if (disp_clk_khz)
-		div = scaled_vco / disp_clk_khz;
-
-	did = dal_divider_range_get_did(divider_ranges, DIVIDER_RANGE_MAX, div);
-
-	if (did != INVALID_DID) {
-		div = dal_divider_range_get_divider(
-			divider_ranges, DIVIDER_RANGE_MAX, did);
-
-		if ((div != INVALID_DIVIDER) &&
-			(did > DIVIDER_RANGE_01_BASE_DIVIDER_ID))
-			if (disp_clk_khz > (scaled_vco / div))
-				div = dal_divider_range_get_divider(
-					divider_ranges, DIVIDER_RANGE_MAX,
-					did - 1);
-
-		if (div != INVALID_DIVIDER)
-			disp_clk_khz = scaled_vco / div;
-
-	}
-	/* We need to add 10KHz to this value because the accuracy in VBIOS is
-	 in 10KHz units. So we need to always round the last digit up in order
-	 to reach the next div level.*/
-	return disp_clk_khz + 10;
-}
-
-static uint32_t calc_single_display_min_clks(
-	struct display_clock *base,
-	struct min_clock_params *params,
-	bool set_clk)
-{
-	struct fixed32_32 h_scale_ratio = dal_fixed32_32_one;
-	struct fixed32_32 v_scale_ratio = dal_fixed32_32_one;
-	uint32_t pix_clk_khz = 0;
-	uint32_t lb_source_width = 0;
-	struct fixed32_32 deep_color_factor;
-	struct fixed32_32 scaler_efficiency;
-	struct fixed32_32 v_filter_init;
-	uint32_t v_filter_init_trunc;
-	uint32_t num_lines_at_frame_start = 3;
-	struct fixed32_32 v_filter_init_ceil;
-	struct fixed32_32 lines_per_lines_out_at_frame_start;
-	struct fixed32_32 lb_lines_in_per_line_out; /* in middle of the frame*/
-	uint32_t src_wdth_rnd_to_chunks;
-	struct fixed32_32 scaling_coeff;
-	struct fixed32_32 h_blank_granularity_factor =
-			dal_fixed32_32_one;
-	struct fixed32_32 fx_disp_clk_mhz;
-	struct fixed32_32 line_time;
-	struct fixed32_32 disp_pipe_pix_throughput;
-	struct fixed32_32 fx_alt_disp_clk_mhz;
-	uint32_t disp_clk_khz;
-	uint32_t alt_disp_clk_khz;
-	struct display_clock_dce110 *disp_clk_110 = DCLCK110_FROM_BASE(base);
-	uint32_t max_clk_khz = get_validation_clock(base);
-	bool panning_allowed = false; /* TODO: receive this value from AS */
-
-	if (params == NULL) {
-		dm_logger_write(base->ctx->logger, LOG_WARNING,
-				"Invalid input parameter in %s",
-				__func__);
-		return 0;
-	}
-
-	deep_color_factor = get_deep_color_factor(params);
-	scaler_efficiency = get_scaler_efficiency(base->ctx, params);
-	pix_clk_khz = params->requested_pixel_clock;
-	lb_source_width = params->source_view.width;
-
-	if (0 != params->dest_view.height && 0 != params->dest_view.width) {
-
-		h_scale_ratio = dal_fixed32_32_from_fraction(
-			params->source_view.width,
-			params->dest_view.width);
-		v_scale_ratio = dal_fixed32_32_from_fraction(
-			params->source_view.height,
-			params->dest_view.height);
-	} else {
-		dm_logger_write(base->ctx->logger, LOG_WARNING,
-				"Destination height or width is 0!\n");
-	}
-
-	v_filter_init =
-		dal_fixed32_32_add(
-			v_scale_ratio,
-			dal_fixed32_32_add_int(
-				dal_fixed32_32_div_int(
-					dal_fixed32_32_mul_int(
-						v_scale_ratio,
-						params->timing_info.INTERLACED),
-					2),
-				params->scaling_info.v_taps + 1));
-	v_filter_init = dal_fixed32_32_div_int(v_filter_init, 2);
-
-	v_filter_init_trunc = dal_fixed32_32_floor(v_filter_init);
-
-	v_filter_init_ceil = dal_fixed32_32_from_fraction(
-						v_filter_init_trunc, 2);
-	v_filter_init_ceil = dal_fixed32_32_from_int(
-		dal_fixed32_32_ceil(v_filter_init_ceil));
-	v_filter_init_ceil = dal_fixed32_32_mul_int(v_filter_init_ceil, 2);
-
-	lines_per_lines_out_at_frame_start =
-			dal_fixed32_32_div_int(v_filter_init_ceil,
-					num_lines_at_frame_start);
-	lb_lines_in_per_line_out =
-			get_lb_lines_in_per_line_out(params, v_scale_ratio);
-
-	if (panning_allowed)
-		src_wdth_rnd_to_chunks =
-			((lb_source_width - 1) / 128) * 128 + 256;
-	else
-		src_wdth_rnd_to_chunks =
-			((lb_source_width + 127) / 128) * 128;
-
-	scaling_coeff =
-		dal_fixed32_32_div(
-			dal_fixed32_32_from_int(params->scaling_info.v_taps),
-			scaler_efficiency);
-
-	if (dal_fixed32_32_le(h_scale_ratio, dal_fixed32_32_one))
-		scaling_coeff = dal_fixed32_32_max(
-			dal_fixed32_32_from_int(
-				dal_fixed32_32_ceil(
-					dal_fixed32_32_from_fraction(
-						params->scaling_info.h_taps,
-						4))),
-			dal_fixed32_32_max(
-				dal_fixed32_32_mul(
-					scaling_coeff,
-					h_scale_ratio),
-				dal_fixed32_32_one));
-
-	if (!params->line_buffer_prefetch_enabled &&
-		dal_fixed32_32_floor(lb_lines_in_per_line_out) != 2 &&
-		dal_fixed32_32_floor(lb_lines_in_per_line_out) != 4) {
-		uint32_t line_total_pixel =
-			params->timing_info.h_total + lb_source_width - 256;
-		h_blank_granularity_factor = dal_fixed32_32_div(
-			dal_fixed32_32_from_int(params->timing_info.h_total),
-			dal_fixed32_32_div(
-			dal_fixed32_32_from_fraction(
-				line_total_pixel, 2),
-				h_scale_ratio));
-	}
-
-	/* Calculate display clock with ramping. Ramping factor is 1.1*/
-	fx_disp_clk_mhz =
-		dal_fixed32_32_div_int(
-			dal_fixed32_32_mul_int(scaling_coeff, 11),
-			10);
-	line_time = dal_fixed32_32_from_fraction(
-			params->timing_info.h_total * 1000, pix_clk_khz);
-
-	disp_pipe_pix_throughput = dal_fixed32_32_mul(
-			lb_lines_in_per_line_out, h_blank_granularity_factor);
-	disp_pipe_pix_throughput = dal_fixed32_32_max(
-			disp_pipe_pix_throughput,
-			lines_per_lines_out_at_frame_start);
-	disp_pipe_pix_throughput = dal_fixed32_32_div(dal_fixed32_32_mul_int(
-			disp_pipe_pix_throughput, src_wdth_rnd_to_chunks),
-			line_time);
-
-	if (0 != params->timing_info.h_total) {
-		fx_disp_clk_mhz =
-			dal_fixed32_32_max(
-				dal_fixed32_32_div_int(
-					dal_fixed32_32_mul_int(
-						scaling_coeff, pix_clk_khz),
-						1000),
-				disp_pipe_pix_throughput);
-		fx_disp_clk_mhz =
-			dal_fixed32_32_mul(
-				fx_disp_clk_mhz,
-				dal_fixed32_32_from_fraction(11, 10));
-	}
-
-	fx_disp_clk_mhz = dal_fixed32_32_max(fx_disp_clk_mhz,
-		dal_fixed32_32_mul(deep_color_factor,
-		dal_fixed32_32_from_fraction(11, 10)));
-
-	/* Calculate display clock without ramping */
-	fx_alt_disp_clk_mhz = scaling_coeff;
-
-	if (0 != params->timing_info.h_total) {
-		fx_alt_disp_clk_mhz = dal_fixed32_32_max(
-				dal_fixed32_32_div_int(dal_fixed32_32_mul_int(
-						scaling_coeff, pix_clk_khz),
-						1000),
-				dal_fixed32_32_div_int(dal_fixed32_32_mul_int(
-						disp_pipe_pix_throughput, 105),
-						100));
-	}
-
-	if (set_clk && disp_clk_110->ss_on_gpu_pll &&
-			disp_clk_110->gpu_pll_ss_divider)
-		fx_alt_disp_clk_mhz = dal_fixed32_32_mul(fx_alt_disp_clk_mhz,
-				dal_fixed32_32_add_int(
-				dal_fixed32_32_div_int(
-				dal_fixed32_32_div_int(
-				dal_fixed32_32_from_fraction(
-				disp_clk_110->gpu_pll_ss_percentage,
-				disp_clk_110->gpu_pll_ss_divider), 100),
-				2),
-				1));
-
-	/* convert to integer */
-	disp_clk_khz = dal_fixed32_32_round(
-			dal_fixed32_32_mul_int(fx_disp_clk_mhz, 1000));
-	alt_disp_clk_khz = dal_fixed32_32_round(
-			dal_fixed32_32_mul_int(fx_alt_disp_clk_mhz, 1000));
-
-	if ((disp_clk_khz > max_clk_khz) && (alt_disp_clk_khz <= max_clk_khz))
-		disp_clk_khz = alt_disp_clk_khz;
-
-	if (set_clk) { /* only compensate clock if we are going to set it.*/
-		disp_clk_khz = get_actual_required_display_clk(
-			disp_clk_110, disp_clk_khz);
-	}
-
-	disp_clk_khz = disp_clk_khz > max_clk_khz ? max_clk_khz : disp_clk_khz;
-
-	return disp_clk_khz;
-}
-
-static uint32_t calculate_min_clock(
-	struct display_clock *base,
-	uint32_t path_num,
-	struct min_clock_params *params)
-{
-	uint32_t i;
-	uint32_t validation_clk_khz =
-			get_validation_clock(base);
-	uint32_t min_clk_khz = validation_clk_khz;
-	uint32_t max_clk_khz = 0;
-	struct display_clock_dce110 *dc = DCLCK110_FROM_BASE(base);
-
-	if (dc->use_max_disp_clk)
-		return min_clk_khz;
-
-	if (params != NULL) {
-		uint32_t disp_clk_khz = 0;
-
-		for (i = 0; i < path_num; ++i) {
-
-			disp_clk_khz = calc_single_display_min_clks(
-							base, params, true);
-
-			/* update the max required clock found*/
-			if (disp_clk_khz > max_clk_khz)
-				max_clk_khz = disp_clk_khz;
-
-			params++;
-		}
-	}
-
-	min_clk_khz = max_clk_khz;
-
-	if (min_clk_khz > validation_clk_khz)
-		min_clk_khz = validation_clk_khz;
-	else if (min_clk_khz < base->min_display_clk_threshold_khz)
-		min_clk_khz = base->min_display_clk_threshold_khz;
-
-	if (dc->use_max_disp_clk)
-		min_clk_khz = get_validation_clock(base);
-
-	return min_clk_khz;
-}
-
 static bool display_clock_integrated_info_construct(
 	struct display_clock_dce110 *disp_clk)
 {
@@ -741,38 +343,6 @@ static bool display_clock_integrated_info_construct(
 	return true;
 }
 
-static uint32_t get_clock(struct display_clock *dc)
-{
-	uint32_t disp_clock = get_validation_clock(dc);
-	uint32_t target_div = INVALID_DIVIDER;
-	uint32_t addr = mmDENTIST_DISPCLK_CNTL;
-	uint32_t value = 0;
-	uint32_t field = 0;
-	struct display_clock_dce110 *disp_clk = DCLCK110_FROM_BASE(dc);
-
-	if (disp_clk->dfs_bypass_enabled && disp_clk->dfs_bypass_disp_clk)
-		return disp_clk->dfs_bypass_disp_clk;
-
-	/* Read the mmDENTIST_DISPCLK_CNTL to get the currently programmed
-	 DID DENTIST_DISPCLK_WDIVIDER.*/
-	value = dm_read_reg(dc->ctx, addr);
-	field = get_reg_field_value(
-			value, DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER);
-
-	/* Convert DENTIST_DISPCLK_WDIVIDER to actual divider*/
-	target_div = dal_divider_range_get_divider(
-		divider_ranges,
-		DIVIDER_RANGE_MAX,
-		field);
-
-	if (target_div != INVALID_DIVIDER)
-		/* Calculate the current DFS clock in KHz.
-		 Should be okay up to 42.9 THz before overflowing.*/
-		disp_clock = (DIVIDER_RANGE_SCALE_FACTOR
-			* disp_clk->dentist_vco_freq_khz) / target_div;
-	return disp_clock;
-}
-
 static enum clocks_state get_required_clocks_state(
 		struct display_clock *dc,
 		struct state_dependent_clocks *req_clocks)
@@ -882,44 +452,15 @@ static void set_clock(
 	psr_wait_loop(base->ctx, requested_clk_khz);
 }
 
-static void set_clock_state(
-	struct display_clock *dc,
-	struct display_clock_state clk_state)
-{
-	struct display_clock_dce110 *disp_clk = DCLCK110_FROM_BASE(dc);
-
-	disp_clk->clock_state = clk_state;
-}
-
-static struct display_clock_state get_clock_state(
-	struct display_clock *dc)
-{
-	struct display_clock_dce110 *disp_clk = DCLCK110_FROM_BASE(dc);
-
-	return disp_clk->clock_state;
-}
-
-static uint32_t get_dfs_bypass_threshold(struct display_clock *dc)
-{
-	return DCE110_DFS_BYPASS_THRESHOLD_KHZ;
-}
 
 static const struct display_clock_funcs funcs = {
 	.destroy = destroy,
-	.calculate_min_clock = calculate_min_clock,
-	.get_clock = get_clock,
-	.get_clock_state = get_clock_state,
-	.get_dfs_bypass_threshold = get_dfs_bypass_threshold,
 	.get_dp_ref_clk_frequency = get_dp_ref_clk_frequency,
 	.get_min_clocks_state = get_min_clocks_state,
 	.get_required_clocks_state = get_required_clocks_state,
-	.get_validation_clock = get_validation_clock,
 	.set_clock = set_clock,
-	.set_clock_state = set_clock_state,
-	.set_dp_ref_clock_source = NULL,
 	.set_min_clocks_state = set_min_clocks_state,
-	.store_max_clocks_state = store_max_clocks_state,
-	.validate = NULL,
+	.store_max_clocks_state = store_max_clocks_state
 };
 
 static bool dal_display_clock_dce110_construct(
@@ -929,8 +470,11 @@ static bool dal_display_clock_dce110_construct(
 	struct display_clock *dc_base = &dc110->disp_clk_base;
 	struct dc_bios *bp = ctx->dc_bios;
 
-	if (!dal_display_clock_construct_base(dc_base, ctx))
-		return false;
+	dc_base->ctx = ctx;
+	dc_base->id = CLOCK_SOURCE_ID_DCPLL;
+	dc_base->min_display_clk_threshold_khz = 0;
+
+	dc_base->cur_min_clks_state = CLOCKS_STATE_INVALID;
 
 	dc_base->funcs = &funcs;
 
diff --git a/drivers/gpu/drm/amd/display/dc/gpu/dce110/display_clock_dce110.h b/drivers/gpu/drm/amd/display/dc/gpu/dce110/display_clock_dce110.h
index 0cdc7b52a09f..88b4bdd75e56 100644
--- a/drivers/gpu/drm/amd/display/dc/gpu/dce110/display_clock_dce110.h
+++ b/drivers/gpu/drm/amd/display/dc/gpu/dce110/display_clock_dce110.h
@@ -44,7 +44,6 @@ struct display_clock_dce110 {
 	/* Cache the display clock returned by VBIOS if DFS-bypass is enabled.
 	 * This is basically "Crystal Frequency In KHz" (XTALIN) frequency */
 	uint32_t dfs_bypass_disp_clk;
-	struct display_clock_state clock_state;
 };
 
 #define DCLCK110_FROM_BASE(dc_base) \
diff --git a/drivers/gpu/drm/amd/display/dc/gpu/dce112/display_clock_dce112.c b/drivers/gpu/drm/amd/display/dc/gpu/dce112/display_clock_dce112.c
index 9b7c9755e316..bf044260c0bb 100644
--- a/drivers/gpu/drm/amd/display/dc/gpu/dce112/display_clock_dce112.c
+++ b/drivers/gpu/drm/amd/display/dc/gpu/dce112/display_clock_dce112.c
@@ -242,406 +242,6 @@ void dispclk_dce112_destroy(struct display_clock **base)
 	*base = NULL;
 }
 
-uint32_t dispclk_dce112_get_validation_clock(struct display_clock *dc)
-{
-	uint32_t clk = 0;
-	struct display_clock_dce112 *disp_clk = DCLCK112_FROM_BASE(dc);
-
-	switch (disp_clk->max_clks_state) {
-	case CLOCKS_STATE_ULTRA_LOW:
-		clk = (disp_clk->max_clks_by_state + CLOCKS_STATE_ULTRA_LOW)->
-			display_clk_khz;
-
-	case CLOCKS_STATE_LOW:
-		clk = (disp_clk->max_clks_by_state + CLOCKS_STATE_LOW)->
-			display_clk_khz;
-		break;
-
-	case CLOCKS_STATE_NOMINAL:
-		clk = (disp_clk->max_clks_by_state + CLOCKS_STATE_NOMINAL)->
-			display_clk_khz;
-		break;
-
-	case CLOCKS_STATE_PERFORMANCE:
-		clk = (disp_clk->max_clks_by_state + CLOCKS_STATE_PERFORMANCE)->
-			display_clk_khz;
-		break;
-
-	case CLOCKS_STATE_INVALID:
-	default:
-		/*Invalid Clocks State*/
-		dm_logger_write(dc->ctx->logger, LOG_WARNING,
-				"Invalid clock state");
-		/* just return the display engine clock for
-		 * lowest supported state*/
-		clk = (disp_clk->max_clks_by_state + CLOCKS_STATE_LOW)->
-				display_clk_khz;
-		break;
-	}
-	return clk;
-}
-
-static struct fixed32_32 get_deep_color_factor(struct min_clock_params *params)
-{
-	/* DeepColorFactor = IF (HDMI = True, bpp / 24, 1)*/
-	struct fixed32_32 deep_color_factor = dal_fixed32_32_from_int(1);
-
-	if (params->signal_type != SIGNAL_TYPE_HDMI_TYPE_A)
-		return deep_color_factor;
-
-	switch (params->deep_color_depth) {
-	case COLOR_DEPTH_101010:
-		/*deep color ratio for 30bpp is 30/24 = 1.25*/
-		deep_color_factor = dal_fixed32_32_from_fraction(30, 24);
-		break;
-
-	case COLOR_DEPTH_121212:
-		/* deep color ratio for 36bpp is 36/24 = 1.5*/
-		deep_color_factor = dal_fixed32_32_from_fraction(36, 24);
-		break;
-
-	case COLOR_DEPTH_161616:
-		/* deep color ratio for 48bpp is 48/24 = 2.0 */
-		deep_color_factor = dal_fixed32_32_from_fraction(48, 24);
-		break;
-	default:
-		break;
-	}
-	return deep_color_factor;
-}
-
-static struct fixed32_32 get_scaler_efficiency(
-	struct dc_context *ctx,
-	struct min_clock_params *params)
-{
-	struct fixed32_32 scaler_efficiency = dal_fixed32_32_from_int(3);
-
-	if (params->scaler_efficiency == V_SCALER_EFFICIENCY_LB18BPP) {
-		scaler_efficiency =
-			dal_fixed32_32_add(
-				dal_fixed32_32_from_fraction(35555, 10000),
-				dal_fixed32_32_from_fraction(
-					55556,
-					100000 * 10000));
-	} else if (params->scaler_efficiency == V_SCALER_EFFICIENCY_LB24BPP) {
-		scaler_efficiency =
-			dal_fixed32_32_add(
-				dal_fixed32_32_from_fraction(34285, 10000),
-				dal_fixed32_32_from_fraction(
-					71429,
-					100000 * 10000));
-	} else if (params->scaler_efficiency == V_SCALER_EFFICIENCY_LB30BPP)
-		scaler_efficiency = dal_fixed32_32_from_fraction(32, 10);
-
-	return scaler_efficiency;
-}
-
-static struct fixed32_32 get_lb_lines_in_per_line_out(
-		struct min_clock_params *params,
-		struct fixed32_32 v_scale_ratio)
-{
-	struct fixed32_32 two = dal_fixed32_32_from_int(2);
-	struct fixed32_32 four = dal_fixed32_32_from_int(4);
-	struct fixed32_32 f4_to_3 = dal_fixed32_32_from_fraction(4, 3);
-	struct fixed32_32 f6_to_4 = dal_fixed32_32_from_fraction(6, 4);
-
-	if (params->line_buffer_prefetch_enabled)
-		return dal_fixed32_32_max(v_scale_ratio, dal_fixed32_32_one);
-	else if (dal_fixed32_32_le(v_scale_ratio, dal_fixed32_32_one))
-		return dal_fixed32_32_one;
-	else if (dal_fixed32_32_le(v_scale_ratio, f4_to_3))
-		return f4_to_3;
-	else if (dal_fixed32_32_le(v_scale_ratio, f6_to_4))
-		return f6_to_4;
-	else if (dal_fixed32_32_le(v_scale_ratio, two))
-		return two;
-	else if (dal_fixed32_32_le(v_scale_ratio, dal_fixed32_32_from_int(3)))
-		return four;
-	else
-		return dal_fixed32_32_zero;
-}
-
-static uint32_t get_actual_required_display_clk(
-	struct display_clock_dce112 *disp_clk,
-	uint32_t target_clk_khz)
-{
-	uint32_t disp_clk_khz = target_clk_khz;
-	uint32_t div = INVALID_DIVIDER;
-	uint32_t did = INVALID_DID;
-	uint32_t scaled_vco =
-		disp_clk->dentist_vco_freq_khz * DIVIDER_RANGE_SCALE_FACTOR;
-
-	ASSERT_CRITICAL(!!disp_clk_khz);
-
-	if (disp_clk_khz)
-		div = scaled_vco / disp_clk_khz;
-
-	did = dal_divider_range_get_did(divider_ranges, DIVIDER_RANGE_MAX, div);
-
-	if (did != INVALID_DID) {
-		div = dal_divider_range_get_divider(
-			divider_ranges, DIVIDER_RANGE_MAX, did);
-
-		if ((div != INVALID_DIVIDER) &&
-			(did > DIVIDER_RANGE_01_BASE_DIVIDER_ID))
-			if (disp_clk_khz > (scaled_vco / div))
-				div = dal_divider_range_get_divider(
-					divider_ranges, DIVIDER_RANGE_MAX,
-					did - 1);
-
-		if (div != INVALID_DIVIDER)
-			disp_clk_khz = scaled_vco / div;
-
-	}
-	/* We need to add 10KHz to this value because the accuracy in VBIOS is
-	 in 10KHz units. So we need to always round the last digit up in order
-	 to reach the next div level.*/
-	return disp_clk_khz + 10;
-}
-
-static uint32_t calc_single_display_min_clks(
-	struct display_clock *base,
-	struct min_clock_params *params,
-	bool set_clk)
-{
-	struct fixed32_32 h_scale_ratio = dal_fixed32_32_one;
-	struct fixed32_32 v_scale_ratio = dal_fixed32_32_one;
-	uint32_t pix_clk_khz = 0;
-	uint32_t lb_source_width = 0;
-	struct fixed32_32 deep_color_factor;
-	struct fixed32_32 scaler_efficiency;
-	struct fixed32_32 v_filter_init;
-	uint32_t v_filter_init_trunc;
-	uint32_t num_lines_at_frame_start = 3;
-	struct fixed32_32 v_filter_init_ceil;
-	struct fixed32_32 lines_per_lines_out_at_frame_start;
-	struct fixed32_32 lb_lines_in_per_line_out; /* in middle of the frame*/
-	uint32_t src_wdth_rnd_to_chunks;
-	struct fixed32_32 scaling_coeff;
-	struct fixed32_32 h_blank_granularity_factor =
-			dal_fixed32_32_one;
-	struct fixed32_32 fx_disp_clk_mhz;
-	struct fixed32_32 line_time;
-	struct fixed32_32 disp_pipe_pix_throughput;
-	struct fixed32_32 fx_alt_disp_clk_mhz;
-	uint32_t disp_clk_khz;
-	uint32_t alt_disp_clk_khz;
-	struct display_clock_dce112 *disp_clk_110 = DCLCK112_FROM_BASE(base);
-	uint32_t max_clk_khz = dispclk_dce112_get_validation_clock(base);
-	bool panning_allowed = false; /* TODO: receive this value from AS */
-
-	if (params == NULL) {
-		dm_logger_write(base->ctx->logger, LOG_WARNING,
-				"Invalid input parameter in %s",
-				__func__);
-		return 0;
-	}
-
-	deep_color_factor = get_deep_color_factor(params);
-	scaler_efficiency = get_scaler_efficiency(base->ctx, params);
-	pix_clk_khz = params->requested_pixel_clock;
-	lb_source_width = params->source_view.width;
-
-	if (0 != params->dest_view.height && 0 != params->dest_view.width) {
-
-		h_scale_ratio = dal_fixed32_32_from_fraction(
-			params->source_view.width,
-			params->dest_view.width);
-		v_scale_ratio = dal_fixed32_32_from_fraction(
-			params->source_view.height,
-			params->dest_view.height);
-	} else {
-		dm_logger_write(base->ctx->logger, LOG_WARNING,
-				"Destination height or width is 0!\n");
-	}
-
-	v_filter_init =
-		dal_fixed32_32_add(
-			v_scale_ratio,
-			dal_fixed32_32_add_int(
-				dal_fixed32_32_div_int(
-					dal_fixed32_32_mul_int(
-						v_scale_ratio,
-						params->timing_info.INTERLACED),
-					2),
-				params->scaling_info.v_taps + 1));
-	v_filter_init = dal_fixed32_32_div_int(v_filter_init, 2);
-
-	v_filter_init_trunc = dal_fixed32_32_floor(v_filter_init);
-
-	v_filter_init_ceil = dal_fixed32_32_from_fraction(
-						v_filter_init_trunc, 2);
-	v_filter_init_ceil = dal_fixed32_32_from_int(
-		dal_fixed32_32_ceil(v_filter_init_ceil));
-	v_filter_init_ceil = dal_fixed32_32_mul_int(v_filter_init_ceil, 2);
-
-	lines_per_lines_out_at_frame_start =
-			dal_fixed32_32_div_int(v_filter_init_ceil,
-					num_lines_at_frame_start);
-	lb_lines_in_per_line_out =
-			get_lb_lines_in_per_line_out(params, v_scale_ratio);
-
-	if (panning_allowed)
-		src_wdth_rnd_to_chunks =
-			((lb_source_width - 1) / 128) * 128 + 256;
-	else
-		src_wdth_rnd_to_chunks =
-			((lb_source_width + 127) / 128) * 128;
-
-	scaling_coeff =
-		dal_fixed32_32_div(
-			dal_fixed32_32_from_int(params->scaling_info.v_taps),
-			scaler_efficiency);
-
-	if (dal_fixed32_32_le(h_scale_ratio, dal_fixed32_32_one))
-		scaling_coeff = dal_fixed32_32_max(
-			dal_fixed32_32_from_int(
-				dal_fixed32_32_ceil(
-					dal_fixed32_32_from_fraction(
-						params->scaling_info.h_taps,
-						4))),
-			dal_fixed32_32_max(
-				dal_fixed32_32_mul(
-					scaling_coeff,
-					h_scale_ratio),
-				dal_fixed32_32_one));
-
-	if (!params->line_buffer_prefetch_enabled &&
-		dal_fixed32_32_floor(lb_lines_in_per_line_out) != 2 &&
-		dal_fixed32_32_floor(lb_lines_in_per_line_out) != 4) {
-		uint32_t line_total_pixel =
-			params->timing_info.h_total + lb_source_width - 256;
-		h_blank_granularity_factor = dal_fixed32_32_div(
-			dal_fixed32_32_from_int(params->timing_info.h_total),
-			dal_fixed32_32_div(
-			dal_fixed32_32_from_fraction(
-				line_total_pixel, 2),
-				h_scale_ratio));
-	}
-
-	/* Calculate display clock with ramping. Ramping factor is 1.1*/
-	fx_disp_clk_mhz =
-		dal_fixed32_32_div_int(
-			dal_fixed32_32_mul_int(scaling_coeff, 11),
-			10);
-	line_time = dal_fixed32_32_from_fraction(
-			params->timing_info.h_total * 1000, pix_clk_khz);
-
-	disp_pipe_pix_throughput = dal_fixed32_32_mul(
-			lb_lines_in_per_line_out, h_blank_granularity_factor);
-	disp_pipe_pix_throughput = dal_fixed32_32_max(
-			disp_pipe_pix_throughput,
-			lines_per_lines_out_at_frame_start);
-	disp_pipe_pix_throughput = dal_fixed32_32_div(dal_fixed32_32_mul_int(
-			disp_pipe_pix_throughput, src_wdth_rnd_to_chunks),
-			line_time);
-
-	if (0 != params->timing_info.h_total) {
-		fx_disp_clk_mhz =
-			dal_fixed32_32_max(
-				dal_fixed32_32_div_int(
-					dal_fixed32_32_mul_int(
-						scaling_coeff, pix_clk_khz),
-						1000),
-				disp_pipe_pix_throughput);
-		fx_disp_clk_mhz =
-			dal_fixed32_32_mul(
-				fx_disp_clk_mhz,
-				dal_fixed32_32_from_fraction(11, 10));
-	}
-
-	fx_disp_clk_mhz = dal_fixed32_32_max(fx_disp_clk_mhz,
-		dal_fixed32_32_mul(deep_color_factor,
-		dal_fixed32_32_from_fraction(11, 10)));
-
-	/* Calculate display clock without ramping */
-	fx_alt_disp_clk_mhz = scaling_coeff;
-
-	if (0 != params->timing_info.h_total) {
-		fx_alt_disp_clk_mhz = dal_fixed32_32_max(
-				dal_fixed32_32_div_int(dal_fixed32_32_mul_int(
-						scaling_coeff, pix_clk_khz),
-						1000),
-				dal_fixed32_32_div_int(dal_fixed32_32_mul_int(
-						disp_pipe_pix_throughput, 105),
-						100));
-	}
-
-	if (set_clk && disp_clk_110->ss_on_gpu_pll &&
-			disp_clk_110->gpu_pll_ss_divider)
-		fx_alt_disp_clk_mhz = dal_fixed32_32_mul(fx_alt_disp_clk_mhz,
-				dal_fixed32_32_add_int(
-				dal_fixed32_32_div_int(
-				dal_fixed32_32_div_int(
-				dal_fixed32_32_from_fraction(
-				disp_clk_110->gpu_pll_ss_percentage,
-				disp_clk_110->gpu_pll_ss_divider), 100),
-				2),
-				1));
-
-	/* convert to integer */
-	disp_clk_khz = dal_fixed32_32_round(
-			dal_fixed32_32_mul_int(fx_disp_clk_mhz, 1000));
-	alt_disp_clk_khz = dal_fixed32_32_round(
-			dal_fixed32_32_mul_int(fx_alt_disp_clk_mhz, 1000));
-
-	if ((disp_clk_khz > max_clk_khz) && (alt_disp_clk_khz <= max_clk_khz))
-		disp_clk_khz = alt_disp_clk_khz;
-
-	if (set_clk) { /* only compensate clock if we are going to set it.*/
-		disp_clk_khz = get_actual_required_display_clk(
-			disp_clk_110, disp_clk_khz);
-	}
-
-	disp_clk_khz = disp_clk_khz > max_clk_khz ? max_clk_khz : disp_clk_khz;
-
-	return disp_clk_khz;
-}
-
-uint32_t dispclk_dce112_calculate_min_clock(
-	struct display_clock *base,
-	uint32_t path_num,
-	struct min_clock_params *params)
-{
-	uint32_t i;
-	uint32_t validation_clk_khz =
-			dispclk_dce112_get_validation_clock(base);
-	uint32_t min_clk_khz = validation_clk_khz;
-	uint32_t max_clk_khz = 0;
-	struct display_clock_dce112 *dc = DCLCK112_FROM_BASE(base);
-
-	if (dc->use_max_disp_clk)
-		return min_clk_khz;
-
-	if (params != NULL) {
-		uint32_t disp_clk_khz = 0;
-
-		for (i = 0; i < path_num; ++i) {
-
-			disp_clk_khz = calc_single_display_min_clks(
-							base, params, true);
-
-			/* update the max required clock found*/
-			if (disp_clk_khz > max_clk_khz)
-				max_clk_khz = disp_clk_khz;
-
-			params++;
-		}
-	}
-
-	min_clk_khz = max_clk_khz;
-
-	if (min_clk_khz > validation_clk_khz)
-		min_clk_khz = validation_clk_khz;
-	else if (min_clk_khz < base->min_display_clk_threshold_khz)
-		min_clk_khz = base->min_display_clk_threshold_khz;
-
-	if (dc->use_max_disp_clk)
-		min_clk_khz = dispclk_dce112_get_validation_clock(base);
-
-	return min_clk_khz;
-}
-
 static bool display_clock_integrated_info_construct(
 	struct display_clock_dce112 *disp_clk)
 {
@@ -655,8 +255,6 @@ static bool display_clock_integrated_info_construct(
 	if (disp_clk->dentist_vco_freq_khz == 0)
 		disp_clk->dentist_vco_freq_khz = 3600000;
 
-	disp_clk->crystal_freq_khz = 100000;
-
 	base->min_display_clk_threshold_khz =
 		disp_clk->dentist_vco_freq_khz / 64;
 
@@ -698,35 +296,6 @@ static bool display_clock_integrated_info_construct(
 	return true;
 }
 
-static uint32_t get_clock(struct display_clock *dc)
-{
-	uint32_t disp_clock = dispclk_dce112_get_validation_clock(dc);
-	uint32_t target_div = INVALID_DIVIDER;
-	uint32_t addr = mmDENTIST_DISPCLK_CNTL;
-	uint32_t value = 0;
-	uint32_t field = 0;
-	struct display_clock_dce112 *disp_clk = DCLCK112_FROM_BASE(dc);
-
-	/* Read the mmDENTIST_DISPCLK_CNTL to get the currently programmed
-	 DID DENTIST_DISPCLK_WDIVIDER.*/
-	value = dm_read_reg(dc->ctx, addr);
-	field = get_reg_field_value(
-			value, DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER);
-
-	/* Convert DENTIST_DISPCLK_WDIVIDER to actual divider*/
-	target_div = dal_divider_range_get_divider(
-		divider_ranges,
-		DIVIDER_RANGE_MAX,
-		field);
-
-	if (target_div != INVALID_DIVIDER)
-		/* Calculate the current DFS clock in KHz.
-		 Should be okay up to 42.9 THz before overflowing.*/
-		disp_clock = (DIVIDER_RANGE_SCALE_FACTOR
-			* disp_clk->dentist_vco_freq_khz) / target_div;
-	return disp_clock;
-}
-
 enum clocks_state dispclk_dce112_get_required_clocks_state(
 	struct display_clock *dc,
 	struct state_dependent_clocks *req_clocks)
@@ -797,45 +366,14 @@ void dispclk_dce112_set_clock(
 	bp->funcs->set_dce_clock(bp, &dce_clk_params);
 }
 
-void dispclk_dce112_set_clock_state(
-	struct display_clock *dc,
-	struct display_clock_state clk_state)
-{
-	struct display_clock_dce112 *disp_clk = DCLCK112_FROM_BASE(dc);
-
-	disp_clk->clock_state = clk_state;
-}
-
-struct display_clock_state dispclk_dce112_get_clock_state(
-	struct display_clock *dc)
-{
-	struct display_clock_dce112 *disp_clk = DCLCK112_FROM_BASE(dc);
-
-	return disp_clk->clock_state;
-}
-
-uint32_t dispclk_dce112_get_dfs_bypass_threshold(
-	struct display_clock *dc)
-{
-	return dce112_DFS_BYPASS_THRESHOLD_KHZ;
-}
-
 static const struct display_clock_funcs funcs = {
 	.destroy = dispclk_dce112_destroy,
-	.calculate_min_clock = dispclk_dce112_calculate_min_clock,
-	.get_clock = get_clock,
-	.get_clock_state = dispclk_dce112_get_clock_state,
-	.get_dfs_bypass_threshold = dispclk_dce112_get_dfs_bypass_threshold,
 	.get_dp_ref_clk_frequency = get_dp_ref_clk_frequency,
 	.get_min_clocks_state = dispclk_dce112_get_min_clocks_state,
 	.get_required_clocks_state = dispclk_dce112_get_required_clocks_state,
-	.get_validation_clock = dispclk_dce112_get_validation_clock,
 	.set_clock = dispclk_dce112_set_clock,
-	.set_clock_state = dispclk_dce112_set_clock_state,
-	.set_dp_ref_clock_source = NULL,
 	.set_min_clocks_state = dispclk_dce112_set_min_clocks_state,
 	.store_max_clocks_state = dispclk_dce112_store_max_clocks_state,
-	.validate = NULL,
 };
 
 bool dal_display_clock_dce112_construct(
@@ -844,11 +382,11 @@ bool dal_display_clock_dce112_construct(
 {
 	struct display_clock *dc_base = &dc112->disp_clk_base;
 
-	/*if (NULL == as)
-		return false;*/
+	dc_base->ctx = ctx;
+	dc_base->id = CLOCK_SOURCE_ID_DCPLL;
+	dc_base->min_display_clk_threshold_khz = 0;
 
-	if (!dal_display_clock_construct_base(dc_base, ctx))
-		return false;
+	dc_base->cur_min_clks_state = CLOCKS_STATE_INVALID;
 
 	dc_base->funcs = &funcs;
 
@@ -870,12 +408,7 @@ bool dal_display_clock_dce112_construct(
 	dc112->max_clks_state = CLOCKS_STATE_NOMINAL;
 
 	dc112->disp_clk_base.min_display_clk_threshold_khz =
-			dc112->crystal_freq_khz;
-
-	if (dc112->disp_clk_base.min_display_clk_threshold_khz <
-			(dc112->dentist_vco_freq_khz / 62))
-		dc112->disp_clk_base.min_display_clk_threshold_khz =
-				(dc112->dentist_vco_freq_khz / 62);
+			(dc112->dentist_vco_freq_khz / 62);
 
 	dal_divider_range_construct(
 		&divider_ranges[DIVIDER_RANGE_01],
diff --git a/drivers/gpu/drm/amd/display/dc/gpu/dce112/display_clock_dce112.h b/drivers/gpu/drm/amd/display/dc/gpu/dce112/display_clock_dce112.h
index 937e17929b7c..5ab31185d29d 100644
--- a/drivers/gpu/drm/amd/display/dc/gpu/dce112/display_clock_dce112.h
+++ b/drivers/gpu/drm/amd/display/dc/gpu/dce112/display_clock_dce112.h
@@ -45,7 +45,6 @@ struct display_clock_dce112 {
 	/* Cache the display clock returned by VBIOS if DFS-bypass is enabled.
 	 * This is basically "Crystal Frequency In KHz" (XTALIN) frequency */
 	uint32_t dfs_bypass_disp_clk;
-	struct display_clock_state clock_state;
 	struct state_dependent_clocks *max_clks_by_state;
 
 };
@@ -75,17 +74,6 @@ bool dal_display_clock_dce112_construct(
 
 void dispclk_dce112_destroy(struct display_clock **base);
 
-uint32_t dispclk_dce112_calculate_min_clock(
-	struct display_clock *base,
-	uint32_t path_num,
-	struct min_clock_params *params);
-
-struct display_clock_state dispclk_dce112_get_clock_state(
-	struct display_clock *dc);
-
-uint32_t dispclk_dce112_get_dfs_bypass_threshold(
-	struct display_clock *dc);
-
 enum clocks_state dispclk_dce112_get_min_clocks_state(
 	struct display_clock *base);
 
@@ -93,16 +81,10 @@ enum clocks_state dispclk_dce112_get_required_clocks_state(
 	struct display_clock *dc,
 	struct state_dependent_clocks *req_clocks);
 
-uint32_t dispclk_dce112_get_validation_clock(struct display_clock *dc);
-
 void dispclk_dce112_set_clock(
 	struct display_clock *base,
 	uint32_t requested_clk_khz);
 
-void dispclk_dce112_set_clock_state(
-	struct display_clock *dc,
-	struct display_clock_state clk_state);
-
 bool dispclk_dce112_set_min_clocks_state(
 	struct display_clock *base,
 	enum clocks_state clocks_state);
diff --git a/drivers/gpu/drm/amd/display/dc/gpu/dce80/display_clock_dce80.c b/drivers/gpu/drm/amd/display/dc/gpu/dce80/display_clock_dce80.c
index eedcfd6232fc..89ee8bd96979 100644
--- a/drivers/gpu/drm/amd/display/dc/gpu/dce80/display_clock_dce80.c
+++ b/drivers/gpu/drm/amd/display/dc/gpu/dce80/display_clock_dce80.c
@@ -90,380 +90,6 @@ static struct divider_range divider_ranges[DIVIDER_RANGE_MAX];
 #define FROM_DISPLAY_CLOCK(base) \
 	container_of(base, struct display_clock_dce80, disp_clk)
 
-static struct fixed32_32 get_deep_color_factor(struct min_clock_params *params)
-{
-	/* DeepColorFactor = IF (HDMI = True, bpp / 24, 1)*/
-	struct fixed32_32 deep_color_factor = dal_fixed32_32_from_int(1);
-
-	if (params->signal_type != SIGNAL_TYPE_HDMI_TYPE_A)
-		return deep_color_factor;
-
-	switch (params->deep_color_depth) {
-	case COLOR_DEPTH_101010:
-		/*deep color ratio for 30bpp is 30/24 = 1.25*/
-		deep_color_factor = dal_fixed32_32_from_fraction(30, 24);
-		break;
-
-	case COLOR_DEPTH_121212:
-		/* deep color ratio for 36bpp is 36/24 = 1.5*/
-		deep_color_factor = dal_fixed32_32_from_fraction(36, 24);
-		break;
-
-	case COLOR_DEPTH_161616:
-		/* deep color ratio for 48bpp is 48/24 = 2.0 */
-		deep_color_factor = dal_fixed32_32_from_fraction(48, 24);
-		break;
-	default:
-		break;
-	}
-	return deep_color_factor;
-}
-
-static uint32_t get_scaler_efficiency(struct min_clock_params *params)
-{
-	uint32_t scaler_efficiency = 3;
-
-	switch (params->scaler_efficiency) {
-	case V_SCALER_EFFICIENCY_LB18BPP:
-	case V_SCALER_EFFICIENCY_LB24BPP:
-		scaler_efficiency = 4;
-		break;
-
-	case V_SCALER_EFFICIENCY_LB30BPP:
-	case V_SCALER_EFFICIENCY_LB36BPP:
-		scaler_efficiency = 3;
-		break;
-
-	default:
-		break;
-	}
-
-	return scaler_efficiency;
-}
-
-static uint32_t get_actual_required_display_clk(
-	struct display_clock_dce80 *disp_clk,
-	uint32_t  target_clk_khz)
-{
-	uint32_t disp_clk_khz = target_clk_khz;
-	uint32_t div = INVALID_DIVIDER;
-	uint32_t did = INVALID_DID;
-	uint32_t scaled_vco =
-		disp_clk->dentist_vco_freq_khz * DIVIDER_RANGE_SCALE_FACTOR;
-
-	ASSERT(disp_clk_khz);
-
-	if (disp_clk_khz)
-		div = scaled_vco / disp_clk_khz;
-
-	did = dal_divider_range_get_did(divider_ranges, DIVIDER_RANGE_MAX, div);
-
-	if (did != INVALID_DID) {
-		div = dal_divider_range_get_divider(
-			divider_ranges, DIVIDER_RANGE_MAX, did);
-
-		if ((div != INVALID_DIVIDER) &&
-			(did > DIVIDER_RANGE_01_BASE_DIVIDER_ID))
-			if (disp_clk_khz > (scaled_vco / div))
-				div = dal_divider_range_get_divider(
-					divider_ranges, DIVIDER_RANGE_MAX,
-					did - 1);
-
-		if (div != INVALID_DIVIDER)
-			disp_clk_khz = scaled_vco / div;
-
-	}
-	/* We need to add 10KHz to this value because the accuracy in VBIOS is
-	 in 10KHz units. So we need to always round the last digit up in order
-	 to reach the next div level.*/
-	return disp_clk_khz + 10;
-}
-
-static uint32_t get_validation_clock(struct display_clock *dc)
-{
-	uint32_t clk = 0;
-	struct display_clock_dce80 *disp_clk = FROM_DISPLAY_CLOCK(dc);
-
-	switch (disp_clk->max_clks_state) {
-	case CLOCKS_STATE_ULTRA_LOW:
-		/*Currently not supported, it has 0 in table entry*/
-	case CLOCKS_STATE_LOW:
-		clk = max_clks_by_state[CLOCKS_STATE_LOW].
-						display_clk_khz;
-		break;
-
-	case CLOCKS_STATE_NOMINAL:
-		clk = max_clks_by_state[CLOCKS_STATE_NOMINAL].
-						display_clk_khz;
-		break;
-
-	case CLOCKS_STATE_PERFORMANCE:
-		clk = max_clks_by_state[CLOCKS_STATE_PERFORMANCE].
-						display_clk_khz;
-		break;
-
-	case CLOCKS_STATE_INVALID:
-	default:
-		/*Invalid Clocks State*/
-		BREAK_TO_DEBUGGER();
-		/* just return the display engine clock for
-		 * lowest supported state*/
-		clk = max_clks_by_state[CLOCKS_STATE_LOW].
-						display_clk_khz;
-		break;
-	}
-	return clk;
-}
-
-static uint32_t calc_single_display_min_clks(
-	struct display_clock *base,
-	struct min_clock_params *params,
-	bool set_clk)
-{
-	struct fixed32_32 h_scale = dal_fixed32_32_from_int(1);
-	struct fixed32_32 v_scale = dal_fixed32_32_from_int(1);
-	uint32_t pix_clk_khz = params->requested_pixel_clock;
-	uint32_t line_total = params->timing_info.h_total;
-	uint32_t max_clk_khz = get_validation_clock(base);
-	struct fixed32_32 deep_color_factor = get_deep_color_factor(params);
-	uint32_t scaler_efficiency = get_scaler_efficiency(params);
-	struct fixed32_32 v_filter_init;
-	uint32_t v_filter_init_trunc;
-	struct fixed32_32 v_filter_init_ceil;
-	struct fixed32_32 src_lines_per_dst_line;
-	uint32_t src_wdth_rnd_to_chunks;
-	struct fixed32_32 scaling_coeff;
-	struct fixed32_32 fx_disp_clk_khz;
-	struct fixed32_32 fx_alt_disp_clk_khz;
-	uint32_t disp_clk_khz;
-	uint32_t alt_disp_clk_khz;
-	struct display_clock_dce80 *dc = FROM_DISPLAY_CLOCK(base);
-
-	if (0 != params->dest_view.height && 0 != params->dest_view.width) {
-
-		h_scale = dal_fixed32_32_from_fraction(
-			params->source_view.width,
-			params->dest_view.width);
-		v_scale = dal_fixed32_32_from_fraction(
-			params->source_view.height,
-			params->dest_view.height);
-	}
-
-	v_filter_init = dal_fixed32_32_from_fraction(
-		params->scaling_info.v_taps, 2u);
-	v_filter_init = dal_fixed32_32_add(v_filter_init,
-		dal_fixed32_32_div_int(v_scale, 2));
-	v_filter_init = dal_fixed32_32_add(v_filter_init,
-		dal_fixed32_32_from_fraction(15, 10));
-
-	v_filter_init_trunc = dal_fixed32_32_floor(v_filter_init);
-
-	v_filter_init_ceil = dal_fixed32_32_from_fraction(
-						v_filter_init_trunc, 2);
-	v_filter_init_ceil = dal_fixed32_32_from_int(
-		dal_fixed32_32_ceil(v_filter_init_ceil));
-	v_filter_init_ceil = dal_fixed32_32_mul_int(v_filter_init_ceil, 2);
-	v_filter_init_ceil = dal_fixed32_32_div_int(v_filter_init_ceil, 3);
-	v_filter_init_ceil = dal_fixed32_32_from_int(
-		dal_fixed32_32_ceil(v_filter_init_ceil));
-
-	src_lines_per_dst_line = dal_fixed32_32_max(
-		dal_fixed32_32_from_int(dal_fixed32_32_ceil(v_scale)),
-		v_filter_init_ceil);
-
-	src_wdth_rnd_to_chunks =
-		((params->source_view.width - 1) / 128) * 128 + 256;
-
-	scaling_coeff = dal_fixed32_32_max(
-		dal_fixed32_32_from_fraction(params->scaling_info.h_taps, 4),
-		dal_fixed32_32_mul(
-			dal_fixed32_32_from_fraction(
-				params->scaling_info.v_taps,
-				scaler_efficiency),
-					h_scale));
-
-	scaling_coeff = dal_fixed32_32_max(scaling_coeff, h_scale);
-
-	fx_disp_clk_khz = dal_fixed32_32_mul(
-		scaling_coeff, dal_fixed32_32_from_fraction(11, 10));
-	if (0 != line_total) {
-		struct fixed32_32 d_clk = dal_fixed32_32_mul_int(
-			src_lines_per_dst_line, src_wdth_rnd_to_chunks);
-		d_clk = dal_fixed32_32_div_int(d_clk, line_total);
-		d_clk = dal_fixed32_32_mul(d_clk,
-				dal_fixed32_32_from_fraction(11, 10));
-		fx_disp_clk_khz = dal_fixed32_32_max(fx_disp_clk_khz, d_clk);
-	}
-
-	fx_disp_clk_khz = dal_fixed32_32_max(fx_disp_clk_khz,
-		dal_fixed32_32_mul(deep_color_factor,
-		dal_fixed32_32_from_fraction(11, 10)));
-
-	fx_disp_clk_khz = dal_fixed32_32_mul_int(fx_disp_clk_khz, pix_clk_khz);
-	fx_disp_clk_khz = dal_fixed32_32_mul(fx_disp_clk_khz,
-		dal_fixed32_32_from_fraction(1005, 1000));
-
-	fx_alt_disp_clk_khz = scaling_coeff;
-
-	if (0 != line_total) {
-		struct fixed32_32 d_clk = dal_fixed32_32_mul_int(
-			src_lines_per_dst_line, src_wdth_rnd_to_chunks);
-		d_clk = dal_fixed32_32_div_int(d_clk, line_total);
-		d_clk = dal_fixed32_32_mul(d_clk,
-			dal_fixed32_32_from_fraction(105, 100));
-		fx_alt_disp_clk_khz = dal_fixed32_32_max(
-			fx_alt_disp_clk_khz, d_clk);
-	}
-	fx_alt_disp_clk_khz = dal_fixed32_32_max(
-		fx_alt_disp_clk_khz, fx_alt_disp_clk_khz);
-
-	fx_alt_disp_clk_khz = dal_fixed32_32_mul_int(
-		fx_alt_disp_clk_khz, pix_clk_khz);
-
-	/* convert to integer*/
-	disp_clk_khz = dal_fixed32_32_floor(fx_disp_clk_khz);
-	alt_disp_clk_khz = dal_fixed32_32_floor(fx_alt_disp_clk_khz);
-
-	if (set_clk) { /* only compensate clock if we are going to set it.*/
-		disp_clk_khz = get_actual_required_display_clk(
-			dc, disp_clk_khz);
-		alt_disp_clk_khz = get_actual_required_display_clk(
-			dc, alt_disp_clk_khz);
-	}
-
-	if ((disp_clk_khz > max_clk_khz) && (alt_disp_clk_khz <= max_clk_khz))
-		disp_clk_khz = alt_disp_clk_khz;
-
-	return disp_clk_khz;
-
-}
-
-static uint32_t calc_cursor_bw_for_min_clks(struct min_clock_params *params)
-{
-
-	struct fixed32_32 v_scale = dal_fixed32_32_from_int(1);
-	struct fixed32_32 v_filter_ceiling;
-	struct fixed32_32 src_lines_per_dst_line;
-	struct fixed32_32 cursor_bw;
-
-	/*  DCE8 Mode Support and Mode Set Architecture Specification Rev 1.3
-	 6.3.3	Cursor data Throughput requirement on DISPCLK
-	 The MCIF to DCP cursor data return throughput is one pixel per DISPCLK
-	  shared among the display heads.
-	 If (Total Cursor Bandwidth in pixels for All heads> DISPCLK)
-	 The mode is not supported
-	 Cursor Bandwidth in Pixels = Cursor Width *
-	 (SourceLinesPerDestinationLine / Line Time)
-	 Assuming that Cursor Width = 128
-	 */
-	/*In the hardware doc they mention an Interlace Factor
-	  It is not used here because we have already used it when
-	  calculating destination view*/
-	if (0 != params->dest_view.height)
-		v_scale = dal_fixed32_32_from_fraction(
-			params->source_view.height,
-			params->dest_view.height);
-
-	{
-	/*Do: Vertical Filter Init = 0.5 + VTAPS/2 + VSR/2 * Interlace Factor*/
-	/*Interlace Factor is included in verticalScaleRatio*/
-	struct fixed32_32 v_filter = dal_fixed32_32_add(
-		dal_fixed32_32_from_fraction(params->scaling_info.v_taps, 2),
-		dal_fixed32_32_div_int(v_scale, 2));
-	/*Do : Ceiling (Vertical Filter Init, 2)/3 )*/
-	v_filter_ceiling = dal_fixed32_32_div_int(v_filter, 2);
-	v_filter_ceiling = dal_fixed32_32_mul_int(
-		dal_fixed32_32_from_int(dal_fixed32_32_ceil(v_filter_ceiling)),
-							2);
-	v_filter_ceiling = dal_fixed32_32_div_int(v_filter_ceiling, 3);
-	}
-	/*Do : MAX( CeilCeiling (VSR), Ceiling (Vertical Filter Init, 2)/3 )*/
-	/*Do : SourceLinesPerDestinationLine =
-	 * MAX( Ceiling (VSR), Ceiling (Vertical Filter Init, 2)/3 )*/
-	src_lines_per_dst_line = dal_fixed32_32_max(v_scale, v_filter_ceiling);
-
-	if ((params->requested_pixel_clock != 0) &&
-		(params->timing_info.h_total != 0)) {
-		/* pixelClock is in units of KHz.  Calc lineTime in us*/
-		struct fixed32_32 inv_line_time = dal_fixed32_32_from_fraction(
-			params->requested_pixel_clock,
-			params->timing_info.h_total);
-		cursor_bw = dal_fixed32_32_mul(
-			dal_fixed32_32_mul_int(inv_line_time, 128),
-						src_lines_per_dst_line);
-	}
-
-	/* convert to integer*/
-	return dal_fixed32_32_floor(cursor_bw);
-}
-
-static bool validate(
-	struct display_clock *dc,
-	struct min_clock_params *params)
-{
-	uint32_t max_clk_khz = get_validation_clock(dc);
-	uint32_t req_clk_khz;
-
-	if (params == NULL)
-		return false;
-
-	req_clk_khz = calc_single_display_min_clks(dc, params, false);
-
-	return (req_clk_khz <= max_clk_khz);
-}
-
-static uint32_t calculate_min_clock(
-	struct display_clock *dc,
-	uint32_t path_num,
-	struct min_clock_params *params)
-{
-	uint32_t i;
-	uint32_t validation_clk_khz = get_validation_clock(dc);
-	uint32_t min_clk_khz = validation_clk_khz;
-	uint32_t max_clk_khz = 0;
-	uint32_t total_cursor_bw = 0;
-	struct display_clock_dce80 *disp_clk = FROM_DISPLAY_CLOCK(dc);
-
-	if (disp_clk->use_max_disp_clk)
-		return min_clk_khz;
-
-	if (params != NULL) {
-		uint32_t disp_clk_khz = 0;
-
-		for (i = 0; i < path_num; ++i) {
-			disp_clk_khz = calc_single_display_min_clks(
-				dc, params, true);
-
-			/* update the max required clock found*/
-			if (disp_clk_khz > max_clk_khz)
-				max_clk_khz = disp_clk_khz;
-
-			disp_clk_khz = calc_cursor_bw_for_min_clks(params);
-
-			total_cursor_bw += disp_clk_khz;
-
-			params++;
-
-		}
-	}
-
-	max_clk_khz = (total_cursor_bw > max_clk_khz) ? total_cursor_bw :
-								max_clk_khz;
-
-	min_clk_khz = max_clk_khz;
-
-	/*"Cursor data Throughput requirement on DISPCLK is now a factor,
-	 *  need to change the code */
-	ASSERT(total_cursor_bw < validation_clk_khz);
-
-	if (min_clk_khz > validation_clk_khz)
-		min_clk_khz = validation_clk_khz;
-	else if (min_clk_khz < dc->min_display_clk_threshold_khz)
-		min_clk_khz = dc->min_display_clk_threshold_khz;
-
-	return min_clk_khz;
-}
-
 static void set_clock(
 	struct display_clock *dc,
 	uint32_t requested_clk_khz)
@@ -493,54 +119,6 @@ static void set_clock(
 		disp_clk->cur_min_clks_state = CLOCKS_STATE_NOMINAL;
 }
 
-static uint32_t get_clock(struct display_clock *dc)
-{
-	uint32_t disp_clock = get_validation_clock(dc);
-	uint32_t target_div = INVALID_DIVIDER;
-	uint32_t addr = mmDENTIST_DISPCLK_CNTL;
-	uint32_t value = 0;
-	uint32_t field = 0;
-	struct display_clock_dce80 *disp_clk = FROM_DISPLAY_CLOCK(dc);
-
-	if (disp_clk->dfs_bypass_enabled && disp_clk->dfs_bypass_disp_clk)
-		return disp_clk->dfs_bypass_disp_clk;
-
-	/* Read the mmDENTIST_DISPCLK_CNTL to get the currently programmed
-	 DID DENTIST_DISPCLK_WDIVIDER.*/
-	value = dm_read_reg(dc->ctx, addr);
-	field = get_reg_field_value(
-			value, DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER);
-
-	/* Convert DENTIST_DISPCLK_WDIVIDER to actual divider*/
-	target_div = dal_divider_range_get_divider(
-		divider_ranges,
-		DIVIDER_RANGE_MAX,
-		field);
-
-	if (target_div != INVALID_DIVIDER)
-		/* Calculate the current DFS clock in KHz.
-		 Should be okay up to 42.9 THz before overflowing.*/
-		disp_clock = (DIVIDER_RANGE_SCALE_FACTOR
-			* disp_clk->dentist_vco_freq_khz) / target_div;
-	return disp_clock;
-}
-
-static void set_clock_state(
-	struct display_clock *dc,
-	struct display_clock_state clk_state)
-{
-	struct display_clock_dce80 *disp_clk = FROM_DISPLAY_CLOCK(dc);
-
-	disp_clk->clock_state = clk_state;
-}
-static struct display_clock_state get_clock_state(
-	struct display_clock *dc)
-{
-	struct display_clock_dce80 *disp_clk = FROM_DISPLAY_CLOCK(dc);
-
-	return disp_clk->clock_state;
-}
-
 static enum clocks_state get_min_clocks_state(struct display_clock *dc)
 {
 	struct display_clock_dce80 *disp_clk = FROM_DISPLAY_CLOCK(dc);
@@ -818,11 +396,6 @@ static bool display_clock_integrated_info_construct(
 	return true;
 }
 
-static uint32_t get_dfs_bypass_threshold(struct display_clock *dc)
-{
-	return DCE80_DFS_BYPASS_THRESHOLD_KHZ;
-}
-
 static void destroy(struct display_clock **dc)
 {
 	struct display_clock_dce80 *disp_clk;
@@ -833,32 +406,34 @@ static void destroy(struct display_clock **dc)
 }
 
 static const struct display_clock_funcs funcs = {
-	.calculate_min_clock = calculate_min_clock,
 	.destroy = destroy,
-	.get_clock = get_clock,
-	.get_clock_state = get_clock_state,
-	.get_dfs_bypass_threshold = get_dfs_bypass_threshold,
 	.get_dp_ref_clk_frequency = get_dp_ref_clk_frequency,
 	.get_min_clocks_state = get_min_clocks_state,
 	.get_required_clocks_state = get_required_clocks_state,
-	.get_validation_clock = get_validation_clock,
 	.set_clock = set_clock,
-	.set_clock_state = set_clock_state,
-	.set_dp_ref_clock_source =
-		dal_display_clock_base_set_dp_ref_clock_source,
 	.set_min_clocks_state = set_min_clocks_state,
-	.store_max_clocks_state = store_max_clocks_state,
-	.validate = validate,
+	.store_max_clocks_state = store_max_clocks_state
 };
 
-static bool display_clock_construct(
-	struct dc_context *ctx,
-	struct display_clock_dce80 *disp_clk)
+
+struct display_clock *dal_display_clock_dce80_create(
+	struct dc_context *ctx)
 {
-	struct display_clock *dc_base = &disp_clk->disp_clk;
+	struct display_clock_dce80 *disp_clk;
+	struct display_clock *dc_base;
 
-	if (!dal_display_clock_construct_base(dc_base, ctx))
-		return false;
+	disp_clk = dm_alloc(sizeof(struct display_clock_dce80));
+
+	if (disp_clk == NULL)
+		return NULL;
+
+	dc_base = &disp_clk->disp_clk;
+
+	dc_base->ctx = ctx;
+	dc_base->id = CLOCK_SOURCE_ID_DCPLL;
+	dc_base->min_display_clk_threshold_khz = 0;
+
+	dc_base->cur_min_clks_state = CLOCKS_STATE_INVALID;
 
 	dc_base->funcs = &funcs;
 	/*
@@ -912,21 +487,6 @@ static bool display_clock_construct(
 		DIVIDER_RANGE_03_STEP_SIZE,
 		DIVIDER_RANGE_03_BASE_DIVIDER_ID,
 		DIVIDER_RANGE_MAX_DIVIDER_ID);
-	return true;
-}
-
-struct display_clock *dal_display_clock_dce80_create(
-	struct dc_context *ctx)
-{
-	struct display_clock_dce80 *disp_clk;
-
-	disp_clk = dm_alloc(sizeof(struct display_clock_dce80));
-
-	if (disp_clk == NULL)
-		return NULL;
-
-	if (display_clock_construct(ctx, disp_clk))
-		return &disp_clk->disp_clk;
 
 	dm_free(disp_clk);
 	return NULL;
diff --git a/drivers/gpu/drm/amd/display/dc/gpu/dce80/display_clock_dce80.h b/drivers/gpu/drm/amd/display/dc/gpu/dce80/display_clock_dce80.h
index 944dd0380413..c675f1e30870 100644
--- a/drivers/gpu/drm/amd/display/dc/gpu/dce80/display_clock_dce80.h
+++ b/drivers/gpu/drm/amd/display/dc/gpu/dce80/display_clock_dce80.h
@@ -48,7 +48,6 @@ struct display_clock_dce80 {
 	 * This is basically "Crystal Frequency In KHz" (XTALIN) frequency */
 	uint32_t dfs_bypass_disp_clk;
 	bool use_max_disp_clk;
-	struct display_clock_state clock_state;
 };
 
 struct display_clock *dal_display_clock_dce80_create(
diff --git a/drivers/gpu/drm/amd/display/dc/gpu/display_clock.c b/drivers/gpu/drm/amd/display/dc/gpu/display_clock.c
index bcc0a5132600..73d982732a67 100644
--- a/drivers/gpu/drm/amd/display/dc/gpu/display_clock.c
+++ b/drivers/gpu/drm/amd/display/dc/gpu/display_clock.c
@@ -26,49 +26,6 @@
 #include "dm_services.h"
 #include "display_clock.h"
 
-void dal_display_clock_base_set_dp_ref_clock_source(
-	struct display_clock *disp_clk,
-	enum clock_source_id clk_src)
-{/*must be implemented in derived*/
-
-}
-
-void dal_display_clock_base_set_clock_state(struct display_clock *disp_clk,
-	struct display_clock_state clk_state)
-{
-	/*Implemented only in DCE81*/
-}
-struct display_clock_state dal_display_clock_base_get_clock_state(
-	struct display_clock *disp_clk)
-{
-	/*Implemented only in DCE81*/
-	struct display_clock_state state = {0};
-	return state;
-}
-uint32_t dal_display_clock_base_get_dfs_bypass_threshold(
-	struct display_clock *disp_clk)
-{
-	/*Implemented only in DCE81*/
-	return 0;
-}
-
-bool dal_display_clock_construct_base(
-	struct display_clock *base,
-	struct dc_context *ctx)
-{
-	base->ctx = ctx;
-	base->id = CLOCK_SOURCE_ID_DCPLL;
-	base->min_display_clk_threshold_khz = 0;
-
-/* Initially set current min clocks state to invalid since we
- * cannot make any assumption about PPLIB's initial state. This will be updated
- * by HWSS via SetMinClocksState() on first mode set prior to programming
- * state dependent clocks.*/
-	base->cur_min_clks_state = CLOCKS_STATE_INVALID;
-
-	return true;
-}
-
 void dal_display_clock_destroy(struct display_clock **disp_clk)
 {
 	if (!disp_clk || !*disp_clk) {
@@ -81,26 +38,6 @@ void dal_display_clock_destroy(struct display_clock **disp_clk)
 	*disp_clk = NULL;
 }
 
-bool dal_display_clock_validate(
-	struct display_clock *disp_clk,
-	struct min_clock_params *params)
-{
-	return disp_clk->funcs->validate(disp_clk, params);
-}
-
-uint32_t dal_display_clock_calculate_min_clock(
-	struct display_clock *disp_clk,
-	uint32_t path_num,
-	struct min_clock_params *params)
-{
-	return disp_clk->funcs->calculate_min_clock(disp_clk, path_num, params);
-}
-
-uint32_t dal_display_clock_get_validation_clock(struct display_clock *disp_clk)
-{
-	return disp_clk->funcs->get_validation_clock(disp_clk);
-}
-
 void dal_display_clock_set_clock(
 	struct display_clock *disp_clk,
 	uint32_t requested_clock_khz)
@@ -108,11 +45,6 @@ void dal_display_clock_set_clock(
 	disp_clk->funcs->set_clock(disp_clk, requested_clock_khz);
 }
 
-uint32_t dal_display_clock_get_clock(struct display_clock *disp_clk)
-{
-	return disp_clk->funcs->get_clock(disp_clk);
-}
-
 bool dal_display_clock_get_min_clocks_state(
 	struct display_clock *disp_clk,
 	enum clocks_state *clocks_state)
@@ -154,35 +86,6 @@ uint32_t dal_display_clock_get_dp_ref_clk_frequency(
 	return disp_clk->funcs->get_dp_ref_clk_frequency(disp_clk);
 }
 
-/*the second parameter of "switchreferenceclock" is
- * a dummy argument for all pre dce 6.0 versions*/
-
-void dal_display_clock_switch_reference_clock(
-	struct display_clock *disp_clk,
-	bool use_external_ref_clk,
-	uint32_t requested_clk_khz)
-{
-	/* TODO: requires Asic Control*/
-	/*
-	struct ac_pixel_clk_params params;
-	struct asic_control *ac =
-		dal_adapter_service_get_asic_control(disp_clk->as);
-	dc_service_memset(&params, 0, sizeof(struct ac_pixel_clk_params));
-
-	params.tgt_pixel_clk_khz = requested_clk_khz;
-	params.flags.SET_EXTERNAL_REF_DIV_SRC = use_external_ref_clk;
-	params.pll_id = disp_clk->id;
-	dal_asic_control_program_display_engine_pll(ac, &params);
-	*/
-}
-
-void dal_display_clock_set_dp_ref_clock_source(
-	struct display_clock *disp_clk,
-	enum clock_source_id clk_src)
-{
-	disp_clk->funcs->set_dp_ref_clock_source(disp_clk, clk_src);
-}
-
 void dal_display_clock_store_max_clocks_state(
 	struct display_clock *disp_clk,
 	enum clocks_state max_clocks_state)
@@ -190,28 +93,3 @@ void dal_display_clock_store_max_clocks_state(
 	disp_clk->funcs->store_max_clocks_state(disp_clk, max_clocks_state);
 }
 
-void dal_display_clock_set_clock_state(
-	struct display_clock *disp_clk,
-	struct display_clock_state clk_state)
-{
-	disp_clk->funcs->set_clock_state(disp_clk, clk_state);
-}
-
-struct display_clock_state dal_display_clock_get_clock_state(
-	struct display_clock *disp_clk)
-{
-	return disp_clk->funcs->get_clock_state(disp_clk);
-}
-
-uint32_t dal_display_clock_get_dfs_bypass_threshold(
-	struct display_clock *disp_clk)
-{
-	return disp_clk->funcs->get_dfs_bypass_threshold(disp_clk);
-}
-
-void dal_display_clock_invalid_clock_state(
-	struct display_clock *disp_clk)
-{
-	disp_clk->cur_min_clks_state = CLOCKS_STATE_INVALID;
-}
-
diff --git a/drivers/gpu/drm/amd/display/dc/gpu/display_clock.h b/drivers/gpu/drm/amd/display/dc/gpu/display_clock.h
index 663580d18a09..4db8442e717a 100644
--- a/drivers/gpu/drm/amd/display/dc/gpu/display_clock.h
+++ b/drivers/gpu/drm/amd/display/dc/gpu/display_clock.h
@@ -30,14 +30,8 @@
 
 struct display_clock_funcs {
 	void (*destroy)(struct display_clock **to_destroy);
-	bool (*validate)(struct display_clock *disp_clk,
-		struct min_clock_params *params);
-	uint32_t (*calculate_min_clock)(struct display_clock *disp_clk,
-		uint32_t path_num, struct min_clock_params *params);
-	uint32_t (*get_validation_clock)(struct display_clock *disp_clk);
 	void (*set_clock)(struct display_clock *disp_clk,
 		uint32_t requested_clock_khz);
-	uint32_t (*get_clock)(struct display_clock *disp_clk);
 	enum clocks_state (*get_min_clocks_state)(
 		struct display_clock *disp_clk);
 	enum clocks_state (*get_required_clocks_state)(
@@ -46,15 +40,8 @@ struct display_clock_funcs {
 	bool (*set_min_clocks_state)(struct display_clock *disp_clk,
 		enum clocks_state clocks_state);
 	uint32_t (*get_dp_ref_clk_frequency)(struct display_clock *disp_clk);
-	void (*set_dp_ref_clock_source)(struct display_clock *disp_clk,
-		enum clock_source_id clk_src);
 	void (*store_max_clocks_state)(struct display_clock *disp_clk,
 		enum clocks_state max_clocks_state);
-	void (*set_clock_state)(struct display_clock *disp_clk,
-		struct display_clock_state clk_state);
-	struct display_clock_state (*get_clock_state)(
-		struct display_clock *disp_clk);
-	uint32_t (*get_dfs_bypass_threshold)(struct display_clock *disp_clk);
 
 };
 
@@ -66,21 +53,6 @@ struct display_clock {
 
 	enum clocks_state cur_min_clks_state;
 };
-void dal_display_clock_base_set_dp_ref_clock_source(
-	struct display_clock *disp_clk,
-	enum clock_source_id clk_src);
-struct display_clock_state dal_display_clock_base_get_clock_state(
-	struct display_clock *disp_clk);
-uint32_t dal_display_clock_base_get_dfs_bypass_threshold(
-	struct display_clock *disp_clk);
-void dal_display_clock_base_set_clock_state(struct display_clock *disp_clk,
-	struct display_clock_state clk_state);
-bool dal_display_clock_construct_base(
-	struct display_clock *base,
-	struct dc_context *ctx);
-
-uint32_t dal_display_clock_get_validation_clock(struct display_clock *disp_clk);
-
 void dal_display_clock_store_max_clocks_state(
 	struct display_clock *disp_clk,
 	enum clocks_state max_clocks_state);
diff --git a/drivers/gpu/drm/amd/display/include/display_clock_interface.h b/drivers/gpu/drm/amd/display/include/display_clock_interface.h
index 2006fa21f54c..ef519a284e0f 100644
--- a/drivers/gpu/drm/amd/display/include/display_clock_interface.h
+++ b/drivers/gpu/drm/amd/display/include/display_clock_interface.h
@@ -30,60 +30,6 @@
 #include "grph_object_defs.h"
 #include "signal_types.h"
 
-/* Timing related information*/
-struct dc_timing_params {
-	uint32_t INTERLACED:1;
-	uint32_t HCOUNT_BY_TWO:1;
-	uint32_t PIXEL_REPETITION:4; /*< values 1 to 10 supported*/
-	uint32_t PREFETCH:1;
-
-	uint32_t h_total;
-	uint32_t h_addressable;
-	uint32_t h_sync_width;
-};
-
-/* Scaling related information*/
-struct dc_scaling_params {
-	uint32_t h_overscan_right;
-	uint32_t h_overscan_left;
-	uint32_t h_taps;
-	uint32_t v_taps;
-};
-
-/* VScalerEfficiency */
-enum v_scaler_efficiency {
-	V_SCALER_EFFICIENCY_LB36BPP = 0,
-	V_SCALER_EFFICIENCY_LB30BPP = 1,
-	V_SCALER_EFFICIENCY_LB24BPP = 2,
-	V_SCALER_EFFICIENCY_LB18BPP = 3
-};
-
-/* Parameters required for minimum Engine
- * and minimum Display clock calculations*/
-struct min_clock_params {
-	uint32_t id;
-	uint32_t requested_pixel_clock; /* in KHz */
-	uint32_t actual_pixel_clock; /* in KHz */
-	struct view source_view;
-	struct view dest_view;
-	struct dc_timing_params timing_info;
-	struct dc_scaling_params scaling_info;
-	enum signal_type signal_type;
-	enum dc_color_depth deep_color_depth;
-	enum v_scaler_efficiency scaler_efficiency;
-	bool line_buffer_prefetch_enabled;
-};
-
-/* Result of Minimum System and Display clock calculations.
- * Minimum System clock and Display clock, source and path to be used
- * for Display clock*/
-struct minimum_clocks_calculation_result {
-	uint32_t min_sclk_khz;
-	uint32_t min_dclk_khz;
-	uint32_t min_mclk_khz;
-	uint32_t min_deep_sleep_sclk;
-};
-
 /* Enumeration of all clocks states */
 enum clocks_state {
 	CLOCKS_STATE_INVALID = 0,
@@ -110,10 +56,6 @@ struct state_dependent_clocks {
 	uint32_t pixel_clk_khz;
 };
 
-struct display_clock_state {
-	uint32_t DFS_BYPASS_ACTIVE:1;
-};
-
 struct display_clock;
 
 struct display_clock *dal_display_clock_dce112_create(
@@ -126,18 +68,9 @@ struct display_clock *dal_display_clock_dce80_create(
 	struct dc_context *ctx);
 
 void dal_display_clock_destroy(struct display_clock **to_destroy);
-bool dal_display_clock_validate(
-	struct display_clock *disp_clk,
-	struct min_clock_params *params);
-uint32_t dal_display_clock_calculate_min_clock(
-	struct display_clock *disp_clk,
-	uint32_t path_num,
-	struct min_clock_params *params);
-uint32_t dal_display_clock_get_validation_clock(struct display_clock *disp_clk);
 void dal_display_clock_set_clock(
 	struct display_clock *disp_clk,
 	uint32_t requested_clock_khz);
-uint32_t dal_display_clock_get_clock(struct display_clock *disp_clk);
 bool dal_display_clock_get_min_clocks_state(
 	struct display_clock *disp_clk,
 	enum clocks_state *clocks_state);
@@ -150,26 +83,8 @@ bool dal_display_clock_set_min_clocks_state(
 	enum clocks_state clocks_state);
 uint32_t dal_display_clock_get_dp_ref_clk_frequency(
 	struct display_clock *disp_clk);
-/*the second parameter of "switchreferenceclock" is
- * a dummy argument for all pre dce 6.0 versions*/
-void dal_display_clock_switch_reference_clock(
-	struct display_clock *disp_clk,
-	bool use_external_ref_clk,
-	uint32_t requested_clock_khz);
-void dal_display_clock_set_dp_ref_clock_source(
-	struct display_clock *disp_clk,
-	enum clock_source_id clk_src);
 void dal_display_clock_store_max_clocks_state(
 	struct display_clock *disp_clk,
 	enum clocks_state max_clocks_state);
-void dal_display_clock_set_clock_state(
-	struct display_clock *disp_clk,
-	struct display_clock_state clk_state);
-struct display_clock_state dal_display_clock_get_clock_state(
-	struct display_clock *disp_clk);
-uint32_t dal_display_clock_get_dfs_bypass_threshold(
-	struct display_clock *disp_clk);
-void dal_display_clock_invalid_clock_state(
-	struct display_clock *disp_clk);
 
 #endif /* __DISPLAY_CLOCK_INTERFACE_H__ */