From: Wenjing Liu <wenjing.liu@amd.com>
Date: Mon, 19 Dec 2022 19:54:31 +0000 (-0500)
Subject: drm/amd/display: move eDP panel control logic to link_edp_panel_control
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0078c924e733cdf21df8e304d85b297f7dea3926;p=linux.git

drm/amd/display: move eDP panel control logic to link_edp_panel_control

Create new file link_edp_panel_control.c and link_edp_panel_control.h,
and move eDP panel control logic into them.

Reviewed-by: George Shen <George.Shen@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c
index f276abb63bcd7..69691daf4dbbd 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c
@@ -29,6 +29,7 @@
 #include "dc_types.h"
 #include "dccg.h"
 #include "clk_mgr_internal.h"
+#include "link.h"
 
 #include "dce100/dce_clk_mgr.h"
 #include "dce110/dce110_clk_mgr.h"
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 53e586fc15010..7f84a8dc0e154 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1659,7 +1659,7 @@ bool dc_validate_boot_timing(const struct dc *dc,
 		return false;
 	}
 
-	if (is_edp_ilr_optimization_required(link, crtc_timing)) {
+	if (link_is_edp_ilr_optimization_required(link, crtc_timing)) {
 		DC_LOG_EVENT_LINK_TRAINING("Seamless boot disabled to optimize eDP link rate\n");
 		return false;
 	}
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 94dc53d592f0d..79d25d3f28719 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -57,6 +57,7 @@
 #include "link/protocols/link_dp_training.h"
 #include "link/protocols/link_dp_phy.h"
 #include "link/protocols/link_dp_capability.h"
+#include "link/protocols/link_edp_panel_control.h"
 
 #include "dc/dcn30/dcn30_vpg.h"
 
@@ -107,17 +108,6 @@ static void dc_link_destruct(struct dc_link *link)
 		dc_sink_release(link->remote_sinks[i]);
 }
 
-bool dc_link_wait_for_t12(struct dc_link *link)
-{
-	if (link->connector_signal == SIGNAL_TYPE_EDP && link->dc->hwss.edp_wait_for_T12) {
-		link->dc->hwss.edp_wait_for_T12(link);
-
-		return true;
-	}
-
-	return false;
-}
-
 /**
  * dc_link_detect_sink() - Determine if there is a sink connected
  *
@@ -1094,7 +1084,7 @@ static bool detect_link_and_local_sink(struct dc_link *link,
 			(link->dpcd_sink_ext_caps.bits.oled == 1)) {
 			dpcd_set_source_specific_data(link);
 			msleep(post_oui_delay);
-			dc_link_set_default_brightness_aux(link);
+			set_default_brightness_aux(link);
 			//TODO: use cached
 		}
 
@@ -2067,10 +2057,10 @@ static enum dc_status enable_link_dp(struct dc_state *state,
 	if (link->dpcd_sink_ext_caps.bits.oled == 1 ||
 		link->dpcd_sink_ext_caps.bits.sdr_aux_backlight_control == 1 ||
 		link->dpcd_sink_ext_caps.bits.hdr_aux_backlight_control == 1) {
-		dc_link_set_default_brightness_aux(link); // TODO: use cached if known
+		set_default_brightness_aux(link); // TODO: use cached if known
 		if (link->dpcd_sink_ext_caps.bits.oled == 1)
 			msleep(bl_oled_enable_delay);
-		dc_link_backlight_enable_aux(link, true);
+		link_backlight_enable_aux(link, true);
 	}
 
 	return status;
@@ -2740,22 +2730,6 @@ static void enable_link_lvds(struct pipe_ctx *pipe_ctx)
 
 }
 
-bool dc_power_alpm_dpcd_enable(struct dc_link *link, bool enable)
-{
-	bool ret = false;
-	union dpcd_alpm_configuration alpm_config;
-
-	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {
-		memset(&alpm_config, 0, sizeof(alpm_config));
-
-		alpm_config.bits.ENABLE = (enable ? true : false);
-		ret = dm_helpers_dp_write_dpcd(link->ctx, link,
-				DP_RECEIVER_ALPM_CONFIG, &alpm_config.raw,
-				sizeof(alpm_config.raw));
-	}
-	return ret;
-}
-
 /****************************enable_link***********************************/
 static enum dc_status enable_link(
 		struct dc_state *state,
@@ -3035,436 +3009,6 @@ enum dc_status dc_link_validate_mode_timing(
 	return DC_OK;
 }
 
-static struct abm *get_abm_from_stream_res(const struct dc_link *link)
-{
-	int i;
-	struct dc *dc = NULL;
-	struct abm *abm = NULL;
-
-	if (!link || !link->ctx)
-		return NULL;
-
-	dc = link->ctx->dc;
-
-	for (i = 0; i < MAX_PIPES; i++) {
-		struct pipe_ctx pipe_ctx = dc->current_state->res_ctx.pipe_ctx[i];
-		struct dc_stream_state *stream = pipe_ctx.stream;
-
-		if (stream && stream->link == link) {
-			abm = pipe_ctx.stream_res.abm;
-			break;
-		}
-	}
-	return abm;
-}
-
-int dc_link_get_backlight_level(const struct dc_link *link)
-{
-	struct abm *abm = get_abm_from_stream_res(link);
-	struct panel_cntl *panel_cntl = link->panel_cntl;
-	struct dc  *dc = link->ctx->dc;
-	struct dmcu *dmcu = dc->res_pool->dmcu;
-	bool fw_set_brightness = true;
-
-	if (dmcu)
-		fw_set_brightness = dmcu->funcs->is_dmcu_initialized(dmcu);
-
-	if (!fw_set_brightness && panel_cntl->funcs->get_current_backlight)
-		return panel_cntl->funcs->get_current_backlight(panel_cntl);
-	else if (abm != NULL && abm->funcs->get_current_backlight != NULL)
-		return (int) abm->funcs->get_current_backlight(abm);
-	else
-		return DC_ERROR_UNEXPECTED;
-}
-
-int dc_link_get_target_backlight_pwm(const struct dc_link *link)
-{
-	struct abm *abm = get_abm_from_stream_res(link);
-
-	if (abm == NULL || abm->funcs->get_target_backlight == NULL)
-		return DC_ERROR_UNEXPECTED;
-
-	return (int) abm->funcs->get_target_backlight(abm);
-}
-
-static struct pipe_ctx *get_pipe_from_link(const struct dc_link *link)
-{
-	int i;
-	struct dc *dc = link->ctx->dc;
-	struct pipe_ctx *pipe_ctx = NULL;
-
-	for (i = 0; i < MAX_PIPES; i++) {
-		if (dc->current_state->res_ctx.pipe_ctx[i].stream) {
-			if (dc->current_state->res_ctx.pipe_ctx[i].stream->link == link) {
-				pipe_ctx = &dc->current_state->res_ctx.pipe_ctx[i];
-				break;
-			}
-		}
-	}
-
-	return pipe_ctx;
-}
-
-bool dc_link_set_backlight_level(const struct dc_link *link,
-		uint32_t backlight_pwm_u16_16,
-		uint32_t frame_ramp)
-{
-	struct dc  *dc = link->ctx->dc;
-
-	DC_LOGGER_INIT(link->ctx->logger);
-	DC_LOG_BACKLIGHT("New Backlight level: %d (0x%X)\n",
-			backlight_pwm_u16_16, backlight_pwm_u16_16);
-
-	if (dc_is_embedded_signal(link->connector_signal)) {
-		struct pipe_ctx *pipe_ctx = get_pipe_from_link(link);
-
-		if (pipe_ctx) {
-			/* Disable brightness ramping when the display is blanked
-			 * as it can hang the DMCU
-			 */
-			if (pipe_ctx->plane_state == NULL)
-				frame_ramp = 0;
-		} else {
-			return false;
-		}
-
-		dc->hwss.set_backlight_level(
-				pipe_ctx,
-				backlight_pwm_u16_16,
-				frame_ramp);
-	}
-	return true;
-}
-
-bool dc_link_set_psr_allow_active(struct dc_link *link, const bool *allow_active,
-		bool wait, bool force_static, const unsigned int *power_opts)
-{
-	struct dc  *dc = link->ctx->dc;
-	struct dmcu *dmcu = dc->res_pool->dmcu;
-	struct dmub_psr *psr = dc->res_pool->psr;
-	unsigned int panel_inst;
-
-	if (psr == NULL && force_static)
-		return false;
-
-	if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
-		return false;
-
-	if ((allow_active != NULL) && (*allow_active == true) && (link->type == dc_connection_none)) {
-		// Don't enter PSR if panel is not connected
-		return false;
-	}
-
-	/* Set power optimization flag */
-	if (power_opts && link->psr_settings.psr_power_opt != *power_opts) {
-		link->psr_settings.psr_power_opt = *power_opts;
-
-		if (psr != NULL && link->psr_settings.psr_feature_enabled && psr->funcs->psr_set_power_opt)
-			psr->funcs->psr_set_power_opt(psr, link->psr_settings.psr_power_opt, panel_inst);
-	}
-
-	if (psr != NULL && link->psr_settings.psr_feature_enabled &&
-			force_static && psr->funcs->psr_force_static)
-		psr->funcs->psr_force_static(psr, panel_inst);
-
-	/* Enable or Disable PSR */
-	if (allow_active && link->psr_settings.psr_allow_active != *allow_active) {
-		link->psr_settings.psr_allow_active = *allow_active;
-
-		if (!link->psr_settings.psr_allow_active)
-			dc_z10_restore(dc);
-
-		if (psr != NULL && link->psr_settings.psr_feature_enabled) {
-			psr->funcs->psr_enable(psr, link->psr_settings.psr_allow_active, wait, panel_inst);
-		} else if ((dmcu != NULL && dmcu->funcs->is_dmcu_initialized(dmcu)) &&
-			link->psr_settings.psr_feature_enabled)
-			dmcu->funcs->set_psr_enable(dmcu, link->psr_settings.psr_allow_active, wait);
-		else
-			return false;
-	}
-
-	return true;
-}
-
-bool dc_link_get_psr_state(const struct dc_link *link, enum dc_psr_state *state)
-{
-	struct dc  *dc = link->ctx->dc;
-	struct dmcu *dmcu = dc->res_pool->dmcu;
-	struct dmub_psr *psr = dc->res_pool->psr;
-	unsigned int panel_inst;
-
-	if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
-		return false;
-
-	if (psr != NULL && link->psr_settings.psr_feature_enabled)
-		psr->funcs->psr_get_state(psr, state, panel_inst);
-	else if (dmcu != NULL && link->psr_settings.psr_feature_enabled)
-		dmcu->funcs->get_psr_state(dmcu, state);
-
-	return true;
-}
-
-static inline enum physical_phy_id
-transmitter_to_phy_id(enum transmitter transmitter_value)
-{
-	switch (transmitter_value) {
-	case TRANSMITTER_UNIPHY_A:
-		return PHYLD_0;
-	case TRANSMITTER_UNIPHY_B:
-		return PHYLD_1;
-	case TRANSMITTER_UNIPHY_C:
-		return PHYLD_2;
-	case TRANSMITTER_UNIPHY_D:
-		return PHYLD_3;
-	case TRANSMITTER_UNIPHY_E:
-		return PHYLD_4;
-	case TRANSMITTER_UNIPHY_F:
-		return PHYLD_5;
-	case TRANSMITTER_NUTMEG_CRT:
-		return PHYLD_6;
-	case TRANSMITTER_TRAVIS_CRT:
-		return PHYLD_7;
-	case TRANSMITTER_TRAVIS_LCD:
-		return PHYLD_8;
-	case TRANSMITTER_UNIPHY_G:
-		return PHYLD_9;
-	case TRANSMITTER_COUNT:
-		return PHYLD_COUNT;
-	case TRANSMITTER_UNKNOWN:
-		return PHYLD_UNKNOWN;
-	default:
-		WARN_ONCE(1, "Unknown transmitter value %d\n",
-			  transmitter_value);
-		return PHYLD_UNKNOWN;
-	}
-}
-
-bool dc_link_setup_psr(struct dc_link *link,
-		const struct dc_stream_state *stream, struct psr_config *psr_config,
-		struct psr_context *psr_context)
-{
-	struct dc *dc;
-	struct dmcu *dmcu;
-	struct dmub_psr *psr;
-	int i;
-	unsigned int panel_inst;
-	/* updateSinkPsrDpcdConfig*/
-	union dpcd_psr_configuration psr_configuration;
-	union dpcd_sink_active_vtotal_control_mode vtotal_control = {0};
-
-	psr_context->controllerId = CONTROLLER_ID_UNDEFINED;
-
-	if (!link)
-		return false;
-
-	dc = link->ctx->dc;
-	dmcu = dc->res_pool->dmcu;
-	psr = dc->res_pool->psr;
-
-	if (!dmcu && !psr)
-		return false;
-
-	if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
-		return false;
-
-
-	memset(&psr_configuration, 0, sizeof(psr_configuration));
-
-	psr_configuration.bits.ENABLE                    = 1;
-	psr_configuration.bits.CRC_VERIFICATION          = 1;
-	psr_configuration.bits.FRAME_CAPTURE_INDICATION  =
-			psr_config->psr_frame_capture_indication_req;
-
-	/* Check for PSR v2*/
-	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {
-		/* For PSR v2 selective update.
-		 * Indicates whether sink should start capturing
-		 * immediately following active scan line,
-		 * or starting with the 2nd active scan line.
-		 */
-		psr_configuration.bits.LINE_CAPTURE_INDICATION = 0;
-		/*For PSR v2, determines whether Sink should generate
-		 * IRQ_HPD when CRC mismatch is detected.
-		 */
-		psr_configuration.bits.IRQ_HPD_WITH_CRC_ERROR    = 1;
-		/* For PSR v2, set the bit when the Source device will
-		 * be enabling PSR2 operation.
-		 */
-		psr_configuration.bits.ENABLE_PSR2    = 1;
-		/* For PSR v2, the Sink device must be able to receive
-		 * SU region updates early in the frame time.
-		 */
-		psr_configuration.bits.EARLY_TRANSPORT_ENABLE    = 1;
-	}
-
-	dm_helpers_dp_write_dpcd(
-		link->ctx,
-		link,
-		368,
-		&psr_configuration.raw,
-		sizeof(psr_configuration.raw));
-
-	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {
-		dc_power_alpm_dpcd_enable(link, true);
-		psr_context->su_granularity_required =
-			psr_config->su_granularity_required;
-		psr_context->su_y_granularity =
-			psr_config->su_y_granularity;
-		psr_context->line_time_in_us =
-			psr_config->line_time_in_us;
-
-		if (link->psr_settings.psr_vtotal_control_support) {
-			psr_context->rate_control_caps = psr_config->rate_control_caps;
-			vtotal_control.bits.ENABLE = true;
-			core_link_write_dpcd(link, DP_SINK_PSR_ACTIVE_VTOTAL_CONTROL_MODE,
-							&vtotal_control.raw, sizeof(vtotal_control.raw));
-		}
-	}
-
-	psr_context->channel = link->ddc->ddc_pin->hw_info.ddc_channel;
-	psr_context->transmitterId = link->link_enc->transmitter;
-	psr_context->engineId = link->link_enc->preferred_engine;
-
-	for (i = 0; i < MAX_PIPES; i++) {
-		if (dc->current_state->res_ctx.pipe_ctx[i].stream
-				== stream) {
-			/* dmcu -1 for all controller id values,
-			 * therefore +1 here
-			 */
-			psr_context->controllerId =
-				dc->current_state->res_ctx.
-				pipe_ctx[i].stream_res.tg->inst + 1;
-			break;
-		}
-	}
-
-	/* Hardcoded for now.  Can be Pcie or Uniphy (or Unknown)*/
-	psr_context->phyType = PHY_TYPE_UNIPHY;
-	/*PhyId is associated with the transmitter id*/
-	psr_context->smuPhyId =
-		transmitter_to_phy_id(link->link_enc->transmitter);
-
-	psr_context->crtcTimingVerticalTotal = stream->timing.v_total;
-	psr_context->vsync_rate_hz = div64_u64(div64_u64((stream->
-					timing.pix_clk_100hz * 100),
-					stream->timing.v_total),
-					stream->timing.h_total);
-
-	psr_context->psrSupportedDisplayConfig = true;
-	psr_context->psrExitLinkTrainingRequired =
-		psr_config->psr_exit_link_training_required;
-	psr_context->sdpTransmitLineNumDeadline =
-		psr_config->psr_sdp_transmit_line_num_deadline;
-	psr_context->psrFrameCaptureIndicationReq =
-		psr_config->psr_frame_capture_indication_req;
-
-	psr_context->skipPsrWaitForPllLock = 0; /* only = 1 in KV */
-
-	psr_context->numberOfControllers =
-			link->dc->res_pool->timing_generator_count;
-
-	psr_context->rfb_update_auto_en = true;
-
-	/* 2 frames before enter PSR. */
-	psr_context->timehyst_frames = 2;
-	/* half a frame
-	 * (units in 100 lines, i.e. a value of 1 represents 100 lines)
-	 */
-	psr_context->hyst_lines = stream->timing.v_total / 2 / 100;
-	psr_context->aux_repeats = 10;
-
-	psr_context->psr_level.u32all = 0;
-
-	/*skip power down the single pipe since it blocks the cstate*/
-#if defined(CONFIG_DRM_AMD_DC_DCN)
-	if (link->ctx->asic_id.chip_family >= FAMILY_RV) {
-		switch(link->ctx->asic_id.chip_family) {
-		case FAMILY_YELLOW_CARP:
-		case AMDGPU_FAMILY_GC_10_3_6:
-		case AMDGPU_FAMILY_GC_11_0_1:
-			if (dc->debug.disable_z10 || dc->debug.psr_skip_crtc_disable)
-				psr_context->psr_level.bits.SKIP_CRTC_DISABLE = true;
-			break;
-		default:
-			psr_context->psr_level.bits.SKIP_CRTC_DISABLE = true;
-			break;
-		}
-	}
-#else
-	if (link->ctx->asic_id.chip_family >= FAMILY_RV)
-		psr_context->psr_level.bits.SKIP_CRTC_DISABLE = true;
-#endif
-
-	/* SMU will perform additional powerdown sequence.
-	 * For unsupported ASICs, set psr_level flag to skip PSR
-	 *  static screen notification to SMU.
-	 *  (Always set for DAL2, did not check ASIC)
-	 */
-	psr_context->allow_smu_optimizations = psr_config->allow_smu_optimizations;
-	psr_context->allow_multi_disp_optimizations = psr_config->allow_multi_disp_optimizations;
-
-	/* Complete PSR entry before aborting to prevent intermittent
-	 * freezes on certain eDPs
-	 */
-	psr_context->psr_level.bits.DISABLE_PSR_ENTRY_ABORT = 1;
-
-	/* enable ALPM */
-	psr_context->psr_level.bits.DISABLE_ALPM = 0;
-	psr_context->psr_level.bits.ALPM_DEFAULT_PD_MODE = 1;
-
-	/* Controls additional delay after remote frame capture before
-	 * continuing power down, default = 0
-	 */
-	psr_context->frame_delay = 0;
-
-	if (psr) {
-		link->psr_settings.psr_feature_enabled = psr->funcs->psr_copy_settings(psr,
-			link, psr_context, panel_inst);
-		link->psr_settings.psr_power_opt = 0;
-		link->psr_settings.psr_allow_active = 0;
-	}
-	else
-		link->psr_settings.psr_feature_enabled = dmcu->funcs->setup_psr(dmcu, link, psr_context);
-
-	/* psr_enabled == 0 indicates setup_psr did not succeed, but this
-	 * should not happen since firmware should be running at this point
-	 */
-	if (link->psr_settings.psr_feature_enabled == 0)
-		ASSERT(0);
-
-	return true;
-
-}
-
-void dc_link_get_psr_residency(const struct dc_link *link, uint32_t *residency)
-{
-	struct dc  *dc = link->ctx->dc;
-	struct dmub_psr *psr = dc->res_pool->psr;
-	unsigned int panel_inst;
-
-	if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
-		return;
-
-	/* PSR residency measurements only supported on DMCUB */
-	if (psr != NULL && link->psr_settings.psr_feature_enabled)
-		psr->funcs->psr_get_residency(psr, residency, panel_inst);
-	else
-		*residency = 0;
-}
-
-bool dc_link_set_sink_vtotal_in_psr_active(const struct dc_link *link, uint16_t psr_vtotal_idle, uint16_t psr_vtotal_su)
-{
-	struct dc *dc = link->ctx->dc;
-	struct dmub_psr *psr = dc->res_pool->psr;
-
-	if (psr == NULL || !link->psr_settings.psr_feature_enabled || !link->psr_settings.psr_vtotal_control_support)
-		return false;
-
-	psr->funcs->psr_set_sink_vtotal_in_psr_active(psr, psr_vtotal_idle, psr_vtotal_su);
-
-	return true;
-}
-
 const struct dc_link_status *dc_link_get_status(const struct dc_link *link)
 {
 	return &link->link_status;
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 8f7505bbe8983..d22d34c8d3fdb 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -1371,108 +1371,6 @@ void dp_enable_mst_on_sink(struct dc_link *link, bool enable)
 	core_link_write_dpcd(link, DP_MSTM_CTRL, &mstmCntl, 1);
 }
 
-void dp_set_panel_mode(struct dc_link *link, enum dp_panel_mode panel_mode)
-{
-	union dpcd_edp_config edp_config_set;
-	bool panel_mode_edp = false;
-
-	memset(&edp_config_set, '\0', sizeof(union dpcd_edp_config));
-
-	if (panel_mode != DP_PANEL_MODE_DEFAULT) {
-
-		switch (panel_mode) {
-		case DP_PANEL_MODE_EDP:
-		case DP_PANEL_MODE_SPECIAL:
-			panel_mode_edp = true;
-			break;
-
-		default:
-				break;
-		}
-
-		/*set edp panel mode in receiver*/
-		core_link_read_dpcd(
-			link,
-			DP_EDP_CONFIGURATION_SET,
-			&edp_config_set.raw,
-			sizeof(edp_config_set.raw));
-
-		if (edp_config_set.bits.PANEL_MODE_EDP
-			!= panel_mode_edp) {
-			enum dc_status result;
-
-			edp_config_set.bits.PANEL_MODE_EDP =
-			panel_mode_edp;
-			result = core_link_write_dpcd(
-				link,
-				DP_EDP_CONFIGURATION_SET,
-				&edp_config_set.raw,
-				sizeof(edp_config_set.raw));
-
-			ASSERT(result == DC_OK);
-		}
-	}
-	DC_LOG_DETECTION_DP_CAPS("Link: %d eDP panel mode supported: %d "
-		 "eDP panel mode enabled: %d \n",
-		 link->link_index,
-		 link->dpcd_caps.panel_mode_edp,
-		 panel_mode_edp);
-}
-
-enum dp_panel_mode dp_get_panel_mode(struct dc_link *link)
-{
-	/* We need to explicitly check that connector
-	 * is not DP. Some Travis_VGA get reported
-	 * by video bios as DP.
-	 */
-	if (link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT) {
-
-		switch (link->dpcd_caps.branch_dev_id) {
-		case DP_BRANCH_DEVICE_ID_0022B9:
-			/* alternate scrambler reset is required for Travis
-			 * for the case when external chip does not
-			 * provide sink device id, alternate scrambler
-			 * scheme will  be overriden later by querying
-			 * Encoder features
-			 */
-			if (strncmp(
-				link->dpcd_caps.branch_dev_name,
-				DP_VGA_LVDS_CONVERTER_ID_2,
-				sizeof(
-				link->dpcd_caps.
-				branch_dev_name)) == 0) {
-					return DP_PANEL_MODE_SPECIAL;
-			}
-			break;
-		case DP_BRANCH_DEVICE_ID_00001A:
-			/* alternate scrambler reset is required for Travis
-			 * for the case when external chip does not provide
-			 * sink device id, alternate scrambler scheme will
-			 * be overriden later by querying Encoder feature
-			 */
-			if (strncmp(link->dpcd_caps.branch_dev_name,
-				DP_VGA_LVDS_CONVERTER_ID_3,
-				sizeof(
-				link->dpcd_caps.
-				branch_dev_name)) == 0) {
-					return DP_PANEL_MODE_SPECIAL;
-			}
-			break;
-		default:
-			break;
-		}
-	}
-
-	if (link->dpcd_caps.panel_mode_edp &&
-		(link->connector_signal == SIGNAL_TYPE_EDP ||
-		 (link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT &&
-		  link->is_internal_display))) {
-		return DP_PANEL_MODE_EDP;
-	}
-
-	return DP_PANEL_MODE_DEFAULT;
-}
-
 enum dc_status dp_set_fec_ready(struct dc_link *link, const struct link_resource *link_res, bool ready)
 {
 	/* FEC has to be "set ready" before the link training.
@@ -1550,166 +1448,6 @@ void dp_set_fec_enable(struct dc_link *link, bool enable)
 	}
 }
 
-bool dc_link_set_backlight_level_nits(struct dc_link *link,
-		bool isHDR,
-		uint32_t backlight_millinits,
-		uint32_t transition_time_in_ms)
-{
-	struct dpcd_source_backlight_set dpcd_backlight_set;
-	uint8_t backlight_control = isHDR ? 1 : 0;
-
-	if (!link || (link->connector_signal != SIGNAL_TYPE_EDP &&
-			link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
-		return false;
-
-	// OLEDs have no PWM, they can only use AUX
-	if (link->dpcd_sink_ext_caps.bits.oled == 1)
-		backlight_control = 1;
-
-	*(uint32_t *)&dpcd_backlight_set.backlight_level_millinits = backlight_millinits;
-	*(uint16_t *)&dpcd_backlight_set.backlight_transition_time_ms = (uint16_t)transition_time_in_ms;
-
-
-	if (core_link_write_dpcd(link, DP_SOURCE_BACKLIGHT_LEVEL,
-			(uint8_t *)(&dpcd_backlight_set),
-			sizeof(dpcd_backlight_set)) != DC_OK)
-		return false;
-
-	if (core_link_write_dpcd(link, DP_SOURCE_BACKLIGHT_CONTROL,
-			&backlight_control, 1) != DC_OK)
-		return false;
-
-	return true;
-}
-
-bool dc_link_get_backlight_level_nits(struct dc_link *link,
-		uint32_t *backlight_millinits_avg,
-		uint32_t *backlight_millinits_peak)
-{
-	union dpcd_source_backlight_get dpcd_backlight_get;
-
-	memset(&dpcd_backlight_get, 0, sizeof(union dpcd_source_backlight_get));
-
-	if (!link || (link->connector_signal != SIGNAL_TYPE_EDP &&
-			link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
-		return false;
-
-	if (!core_link_read_dpcd(link, DP_SOURCE_BACKLIGHT_CURRENT_PEAK,
-			dpcd_backlight_get.raw,
-			sizeof(union dpcd_source_backlight_get)))
-		return false;
-
-	*backlight_millinits_avg =
-		dpcd_backlight_get.bytes.backlight_millinits_avg;
-	*backlight_millinits_peak =
-		dpcd_backlight_get.bytes.backlight_millinits_peak;
-
-	/* On non-supported panels dpcd_read usually succeeds with 0 returned */
-	if (*backlight_millinits_avg == 0 ||
-			*backlight_millinits_avg > *backlight_millinits_peak)
-		return false;
-
-	return true;
-}
-
-bool dc_link_backlight_enable_aux(struct dc_link *link, bool enable)
-{
-	uint8_t backlight_enable = enable ? 1 : 0;
-
-	if (!link || (link->connector_signal != SIGNAL_TYPE_EDP &&
-		link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
-		return false;
-
-	if (core_link_write_dpcd(link, DP_SOURCE_BACKLIGHT_ENABLE,
-		&backlight_enable, 1) != DC_OK)
-		return false;
-
-	return true;
-}
-
-// we read default from 0x320 because we expect BIOS wrote it there
-// regular get_backlight_nit reads from panel set at 0x326
-bool dc_link_read_default_bl_aux(struct dc_link *link, uint32_t *backlight_millinits)
-{
-	if (!link || (link->connector_signal != SIGNAL_TYPE_EDP &&
-		link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
-		return false;
-
-	if (!core_link_read_dpcd(link, DP_SOURCE_BACKLIGHT_LEVEL,
-		(uint8_t *) backlight_millinits,
-		sizeof(uint32_t)))
-		return false;
-
-	return true;
-}
-
-bool dc_link_set_default_brightness_aux(struct dc_link *link)
-{
-	uint32_t default_backlight;
-
-	if (link && link->dpcd_sink_ext_caps.bits.oled == 1) {
-		if (!dc_link_read_default_bl_aux(link, &default_backlight))
-			default_backlight = 150000;
-		// if < 5 nits or > 5000, it might be wrong readback
-		if (default_backlight < 5000 || default_backlight > 5000000)
-			default_backlight = 150000; //
-
-		return dc_link_set_backlight_level_nits(link, true,
-				default_backlight, 0);
-	}
-	return false;
-}
-
-bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timing *crtc_timing)
-{
-	struct dc_link_settings link_setting;
-	uint8_t link_bw_set;
-	uint8_t link_rate_set;
-	uint32_t req_bw;
-	union lane_count_set lane_count_set = {0};
-
-	ASSERT(link || crtc_timing); // invalid input
-
-	if (link->dpcd_caps.edp_supported_link_rates_count == 0 ||
-			!link->panel_config.ilr.optimize_edp_link_rate)
-		return false;
-
-
-	// Read DPCD 00100h to find if standard link rates are set
-	core_link_read_dpcd(link, DP_LINK_BW_SET,
-				&link_bw_set, sizeof(link_bw_set));
-
-	if (link_bw_set) {
-		DC_LOG_EVENT_LINK_TRAINING("eDP ILR: Optimization required, VBIOS used link_bw_set\n");
-		return true;
-	}
-
-	// Read DPCD 00115h to find the edp link rate set used
-	core_link_read_dpcd(link, DP_LINK_RATE_SET,
-			    &link_rate_set, sizeof(link_rate_set));
-
-	// Read DPCD 00101h to find out the number of lanes currently set
-	core_link_read_dpcd(link, DP_LANE_COUNT_SET,
-				&lane_count_set.raw, sizeof(lane_count_set));
-
-	req_bw = dc_bandwidth_in_kbps_from_timing(crtc_timing);
-
-	if (!crtc_timing->flags.DSC)
-		dc_link_decide_edp_link_settings(link, &link_setting, req_bw);
-	else
-		decide_edp_link_settings_with_dsc(link, &link_setting, req_bw, LINK_RATE_UNKNOWN);
-
-	if (link->dpcd_caps.edp_supported_link_rates[link_rate_set] != link_setting.link_rate ||
-			lane_count_set.bits.LANE_COUNT_SET != link_setting.lane_count) {
-		DC_LOG_EVENT_LINK_TRAINING("eDP ILR: Optimization required, VBIOS link_rate_set not optimal\n");
-		return true;
-	}
-
-	DC_LOG_EVENT_LINK_TRAINING("eDP ILR: No optimization required, VBIOS set optimal link_rate_set\n");
-	return false;
-}
-
-
 // TODO - DP2.0 Link: Fix get_lane_status to handle LTTPR offset (SST and MST)
 static void get_lane_status(
 	struct dc_link *link,
@@ -1907,18 +1645,6 @@ struct fixed31_32 calculate_sst_avg_time_slots_per_mtp(
 	return avg_time_slots_per_mtp;
 }
 
-void edp_panel_backlight_power_on(struct dc_link *link, bool wait_for_hpd)
-{
-	if (link->connector_signal != SIGNAL_TYPE_EDP)
-		return;
-
-	link->dc->hwss.edp_power_control(link, true);
-	if (wait_for_hpd)
-		link->dc->hwss.edp_wait_for_hpd_ready(link, true);
-	if (link->dc->hwss.edp_backlight_control)
-		link->dc->hwss.edp_backlight_control(link, true);
-}
-
 void dc_link_clear_dprx_states(struct dc_link *link)
 {
 	memset(&link->dprx_states, 0, sizeof(link->dprx_states));
@@ -1931,71 +1657,6 @@ void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode)
 					&dp_test_mode, sizeof(dp_test_mode));
 }
 
-void edp_add_delay_for_T9(struct dc_link *link)
-{
-	if (link && link->panel_config.pps.extra_delay_backlight_off > 0)
-		udelay(link->panel_config.pps.extra_delay_backlight_off * 1000);
-}
-
-bool edp_receiver_ready_T9(struct dc_link *link)
-{
-	unsigned int tries = 0;
-	unsigned char sinkstatus = 0;
-	unsigned char edpRev = 0;
-	enum dc_status result = DC_OK;
-
-	result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev));
-
-	/* start from eDP version 1.2, SINK_STAUS indicate the sink is ready.*/
-	if (result == DC_OK && edpRev >= DP_EDP_12) {
-		do {
-			sinkstatus = 1;
-			result = core_link_read_dpcd(link, DP_SINK_STATUS, &sinkstatus, sizeof(sinkstatus));
-			if (sinkstatus == 0)
-				break;
-			if (result != DC_OK)
-				break;
-			udelay(100); //MAx T9
-		} while (++tries < 50);
-	}
-
-	return result;
-}
-bool edp_receiver_ready_T7(struct dc_link *link)
-{
-	unsigned char sinkstatus = 0;
-	unsigned char edpRev = 0;
-	enum dc_status result = DC_OK;
-
-	/* use absolute time stamp to constrain max T7*/
-	unsigned long long enter_timestamp = 0;
-	unsigned long long finish_timestamp = 0;
-	unsigned long long time_taken_in_ns = 0;
-
-	result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev));
-
-	if (result == DC_OK && edpRev >= DP_EDP_12) {
-		/* start from eDP version 1.2, SINK_STAUS indicate the sink is ready.*/
-		enter_timestamp = dm_get_timestamp(link->ctx);
-		do {
-			sinkstatus = 0;
-			result = core_link_read_dpcd(link, DP_SINK_STATUS, &sinkstatus, sizeof(sinkstatus));
-			if (sinkstatus == 1)
-				break;
-			if (result != DC_OK)
-				break;
-			udelay(25);
-			finish_timestamp = dm_get_timestamp(link->ctx);
-			time_taken_in_ns = dm_get_elapse_time_in_ns(link->ctx, finish_timestamp, enter_timestamp);
-		} while (time_taken_in_ns < 50 * 1000000); //MAx T7 is 50ms
-	}
-
-	if (link && link->panel_config.pps.extra_t7_ms > 0)
-		udelay(link->panel_config.pps.extra_t7_ms * 1000);
-
-	return result;
-}
-
 void dp_retrain_link_dp_test(struct dc_link *link,
 			struct dc_link_settings *link_setting,
 			bool skip_video_pattern)
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index d86e84f417cc4..eb85189745bc0 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -370,11 +370,6 @@ bool dc_link_get_backlight_level_nits(struct dc_link *link,
 		uint32_t *backlight_millinits,
 		uint32_t *backlight_millinits_peak);
 
-bool dc_link_backlight_enable_aux(struct dc_link *link, bool enable);
-
-bool dc_link_read_default_bl_aux(struct dc_link *link, uint32_t *backlight_millinits);
-bool dc_link_set_default_brightness_aux(struct dc_link *link);
-
 int dc_link_get_backlight_level(const struct dc_link *dc_link);
 
 int dc_link_get_target_backlight_pwm(const struct dc_link *link);
@@ -388,16 +383,10 @@ bool dc_link_setup_psr(struct dc_link *dc_link,
 		const struct dc_stream_state *stream, struct psr_config *psr_config,
 		struct psr_context *psr_context);
 
-bool dc_power_alpm_dpcd_enable(struct dc_link *link, bool enable);
-
-void dc_link_get_psr_residency(const struct dc_link *link, uint32_t *residency);
-
 void dc_link_blank_all_dp_displays(struct dc *dc);
 void dc_link_blank_all_edp_displays(struct dc *dc);
 
 void dc_link_blank_dp_stream(struct dc_link *link, bool hw_init);
-bool dc_link_set_sink_vtotal_in_psr_active(const struct dc_link *link,
-		uint16_t psr_vtotal_idle, uint16_t psr_vtotal_su);
 
 /* Request DC to detect if there is a Panel connected.
  * boot - If this call is during initial boot.
@@ -584,4 +573,6 @@ void dc_link_dp_receiver_power_ctrl(struct dc_link *link, bool on);
 bool dc_link_decide_edp_link_settings(struct dc_link *link,
 		struct dc_link_settings *link_setting,
 		uint32_t req_bw);
+void dc_link_edp_panel_backlight_power_on(struct dc_link *link,
+		bool wait_for_hpd);
 #endif /* DC_LINK_H_ */
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 926963a993a9c..594679db3243d 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -1015,7 +1015,7 @@ void dce110_edp_backlight_control(
 		 * we shouldn't be doing power-sequencing, hence we can skip
 		 * waiting for T7-ready.
 		 */
-			edp_receiver_ready_T7(link);
+			link_edp_receiver_ready_T7(link);
 		else
 			DC_LOG_DC("edp_receiver_ready_T7 skipped\n");
 	}
@@ -1046,7 +1046,7 @@ void dce110_edp_backlight_control(
 	if (link->dpcd_sink_ext_caps.bits.oled ||
 		link->dpcd_sink_ext_caps.bits.hdr_aux_backlight_control == 1 ||
 		link->dpcd_sink_ext_caps.bits.sdr_aux_backlight_control == 1)
-		dc_link_backlight_enable_aux(link, enable);
+		link_backlight_enable_aux(link, enable);
 
 	/*edp 1.2*/
 	if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_OFF) {
@@ -1058,7 +1058,7 @@ void dce110_edp_backlight_control(
 		 * we shouldn't be doing power-sequencing, hence we can skip
 		 * waiting for T9-ready.
 		 */
-			edp_add_delay_for_T9(link);
+			link_edp_add_delay_for_T9(link);
 		else
 			DC_LOG_DC("edp_receiver_ready_T9 skipped\n");
 	}
@@ -1242,7 +1242,7 @@ void dce110_blank_stream(struct pipe_ctx *pipe_ctx)
 				 * we shouldn't be doing power-sequencing, hence we can skip
 				 * waiting for T9-ready.
 				 */
-				edp_receiver_ready_T9(link);
+				link_edp_receiver_ready_T9(link);
 			}
 		}
 	}
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
index 31613c58e5eb0..b7bd272f31189 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h
@@ -57,13 +57,8 @@ enum dc_status read_hpd_rx_irq_data(
 	struct dc_link *link,
 	union hpd_irq_data *irq_data);
 
-bool is_edp_ilr_optimization_required(struct dc_link *link, struct dc_crtc_timing *crtc_timing);
-
 void dp_enable_mst_on_sink(struct dc_link *link, bool enable);
 
-enum dp_panel_mode dp_get_panel_mode(struct dc_link *link);
-void dp_set_panel_mode(struct dc_link *link, enum dp_panel_mode panel_mode);
-
 enum dc_status dp_set_fec_ready(struct dc_link *link, const struct link_resource *link_res, bool ready);
 void dp_set_fec_enable(struct dc_link *link, bool enable);
 bool dp_set_dsc_enable(struct pipe_ctx *pipe_ctx, bool enable);
@@ -84,12 +79,7 @@ struct fixed31_32 calculate_sst_avg_time_slots_per_mtp(
 		const struct dc_stream_state *stream,
 		const struct dc_link *link);
 void setup_dp_hpo_stream(struct pipe_ctx *pipe_ctx, bool enable);
-void edp_panel_backlight_power_on(struct dc_link *link, bool wait_for_hpd);
 void dp_source_sequence_trace(struct dc_link *link, uint8_t dp_test_mode);
-void edp_add_delay_for_T9(struct dc_link *link);
-bool edp_receiver_ready_T9(struct dc_link *link);
-bool edp_receiver_ready_T7(struct dc_link *link);
-
 void dp_retrain_link_dp_test(struct dc_link *link,
 		struct dc_link_settings *link_setting,
 		bool skip_video_pattern);
diff --git a/drivers/gpu/drm/amd/display/dc/inc/link.h b/drivers/gpu/drm/amd/display/dc/inc/link.h
index b176dcfa14690..d4cebf49e5d44 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/link.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/link.h
@@ -94,4 +94,16 @@ void link_dp_trace_set_edp_power_timestamp(struct dc_link *link,
 uint64_t link_dp_trace_get_edp_poweron_timestamp(struct dc_link *link);
 uint64_t link_dp_trace_get_edp_poweroff_timestamp(struct dc_link *link);
 
+bool link_is_edp_ilr_optimization_required(struct dc_link *link,
+		struct dc_crtc_timing *crtc_timing);
+
+bool link_backlight_enable_aux(struct dc_link *link, bool enable);
+void link_edp_add_delay_for_T9(struct dc_link *link);
+bool link_edp_receiver_ready_T9(struct dc_link *link);
+bool link_edp_receiver_ready_T7(struct dc_link *link);
+bool link_power_alpm_dpcd_enable(struct dc_link *link, bool enable);
+bool link_set_sink_vtotal_in_psr_active(const struct dc_link *link,
+		uint16_t psr_vtotal_idle, uint16_t psr_vtotal_su);
+void link_get_psr_residency(const struct dc_link *link, uint32_t *residency);
+
 #endif /* __DC_LINK_HPD_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/link/Makefile b/drivers/gpu/drm/amd/display/dc/link/Makefile
index abfd79ba36174..4198f66585f80 100644
--- a/drivers/gpu/drm/amd/display/dc/link/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/link/Makefile
@@ -47,7 +47,8 @@ AMD_DISPLAY_FILES += $(AMD_DAL_LINK_HWSS)
 LINK_PROTOCOLS = link_hpd.o link_ddc.o link_dpcd.o link_dp_dpia.o \
 link_dp_training.o link_dp_training_8b_10b.o link_dp_training_128b_132b.o \
 link_dp_training_dpia.o link_dp_training_auxless.o \
-link_dp_training_fixed_vs_pe_retimer.o link_dp_phy.o link_dp_capability.o
+link_dp_training_fixed_vs_pe_retimer.o link_dp_phy.o link_dp_capability.o \
+link_edp_panel_control.o
 
 AMD_DAL_LINK_PROTOCOLS = $(addprefix $(AMDDALPATH)/dc/link/protocols/, \
 $(LINK_PROTOCOLS))
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
index ccc0638a98a5a..8f86d13ad8c98 100644
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
@@ -39,6 +39,7 @@
 #include "link_dpcd.h"
 #include "link_dp_dpia.h"
 #include "link_dp_phy.h"
+#include "link_edp_panel_control.h"
 #include "link/accessories/link_dp_trace.h"
 #include "link_dp_training.h"
 #include "atomfirmware.h"
@@ -1925,7 +1926,7 @@ void detect_edp_sink_caps(struct dc_link *link)
 	link->dpcd_caps.set_power_state_capable_edp =
 				(general_edp_cap & DP_EDP_SET_POWER_CAP) ? true:false;
 
-	dc_link_set_default_brightness_aux(link);
+	set_default_brightness_aux(link);
 
 	core_link_read_dpcd(link, DP_EDP_DPCD_REV,
 		&link->dpcd_caps.edp_rev,
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c
index 9dbaeb20b8af8..fefefd72d80a3 100644
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_training.c
@@ -40,6 +40,7 @@
 #include "link/accessories/link_dp_trace.h"
 #include "link_dp_phy.h"
 #include "link_dp_capability.h"
+#include "link_edp_panel_control.h"
 #include "dc_link_dp.h"
 #include "atomfirmware.h"
 #include "link_enc_cfg.h"
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c
new file mode 100644
index 0000000000000..04483ea4b0b88
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.c
@@ -0,0 +1,831 @@
+/*
+ * Copyright 2022 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
+ *
+ */
+
+/* FILE POLICY AND INTENDED USAGE:
+ * This file implements retrieval and configuration of eDP panel features such
+ * as PSR and ABM and it also manages specs defined eDP panel power sequences.
+ */
+
+#include "link_edp_panel_control.h"
+#include "link_dpcd.h"
+#include "link_dp_capability.h"
+#include "dm_helpers.h"
+#include "dal_asic_id.h"
+#include "dce/dmub_psr.h"
+#include "abm.h"
+#define DC_LOGGER_INIT(logger)
+
+void dp_set_panel_mode(struct dc_link *link, enum dp_panel_mode panel_mode)
+{
+	union dpcd_edp_config edp_config_set;
+	bool panel_mode_edp = false;
+
+	memset(&edp_config_set, '\0', sizeof(union dpcd_edp_config));
+
+	if (panel_mode != DP_PANEL_MODE_DEFAULT) {
+
+		switch (panel_mode) {
+		case DP_PANEL_MODE_EDP:
+		case DP_PANEL_MODE_SPECIAL:
+			panel_mode_edp = true;
+			break;
+
+		default:
+				break;
+		}
+
+		/*set edp panel mode in receiver*/
+		core_link_read_dpcd(
+			link,
+			DP_EDP_CONFIGURATION_SET,
+			&edp_config_set.raw,
+			sizeof(edp_config_set.raw));
+
+		if (edp_config_set.bits.PANEL_MODE_EDP
+			!= panel_mode_edp) {
+			enum dc_status result;
+
+			edp_config_set.bits.PANEL_MODE_EDP =
+			panel_mode_edp;
+			result = core_link_write_dpcd(
+				link,
+				DP_EDP_CONFIGURATION_SET,
+				&edp_config_set.raw,
+				sizeof(edp_config_set.raw));
+
+			ASSERT(result == DC_OK);
+		}
+	}
+	DC_LOG_DETECTION_DP_CAPS("Link: %d eDP panel mode supported: %d "
+		 "eDP panel mode enabled: %d \n",
+		 link->link_index,
+		 link->dpcd_caps.panel_mode_edp,
+		 panel_mode_edp);
+}
+
+enum dp_panel_mode dp_get_panel_mode(struct dc_link *link)
+{
+	/* We need to explicitly check that connector
+	 * is not DP. Some Travis_VGA get reported
+	 * by video bios as DP.
+	 */
+	if (link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT) {
+
+		switch (link->dpcd_caps.branch_dev_id) {
+		case DP_BRANCH_DEVICE_ID_0022B9:
+			/* alternate scrambler reset is required for Travis
+			 * for the case when external chip does not
+			 * provide sink device id, alternate scrambler
+			 * scheme will  be overriden later by querying
+			 * Encoder features
+			 */
+			if (strncmp(
+				link->dpcd_caps.branch_dev_name,
+				DP_VGA_LVDS_CONVERTER_ID_2,
+				sizeof(
+				link->dpcd_caps.
+				branch_dev_name)) == 0) {
+					return DP_PANEL_MODE_SPECIAL;
+			}
+			break;
+		case DP_BRANCH_DEVICE_ID_00001A:
+			/* alternate scrambler reset is required for Travis
+			 * for the case when external chip does not provide
+			 * sink device id, alternate scrambler scheme will
+			 * be overriden later by querying Encoder feature
+			 */
+			if (strncmp(link->dpcd_caps.branch_dev_name,
+				DP_VGA_LVDS_CONVERTER_ID_3,
+				sizeof(
+				link->dpcd_caps.
+				branch_dev_name)) == 0) {
+					return DP_PANEL_MODE_SPECIAL;
+			}
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (link->dpcd_caps.panel_mode_edp &&
+		(link->connector_signal == SIGNAL_TYPE_EDP ||
+		 (link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT &&
+		  link->is_internal_display))) {
+		return DP_PANEL_MODE_EDP;
+	}
+
+	return DP_PANEL_MODE_DEFAULT;
+}
+
+bool dc_link_set_backlight_level_nits(struct dc_link *link,
+		bool isHDR,
+		uint32_t backlight_millinits,
+		uint32_t transition_time_in_ms)
+{
+	struct dpcd_source_backlight_set dpcd_backlight_set;
+	uint8_t backlight_control = isHDR ? 1 : 0;
+
+	if (!link || (link->connector_signal != SIGNAL_TYPE_EDP &&
+			link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
+		return false;
+
+	// OLEDs have no PWM, they can only use AUX
+	if (link->dpcd_sink_ext_caps.bits.oled == 1)
+		backlight_control = 1;
+
+	*(uint32_t *)&dpcd_backlight_set.backlight_level_millinits = backlight_millinits;
+	*(uint16_t *)&dpcd_backlight_set.backlight_transition_time_ms = (uint16_t)transition_time_in_ms;
+
+
+	if (core_link_write_dpcd(link, DP_SOURCE_BACKLIGHT_LEVEL,
+			(uint8_t *)(&dpcd_backlight_set),
+			sizeof(dpcd_backlight_set)) != DC_OK)
+		return false;
+
+	if (core_link_write_dpcd(link, DP_SOURCE_BACKLIGHT_CONTROL,
+			&backlight_control, 1) != DC_OK)
+		return false;
+
+	return true;
+}
+
+bool dc_link_get_backlight_level_nits(struct dc_link *link,
+		uint32_t *backlight_millinits_avg,
+		uint32_t *backlight_millinits_peak)
+{
+	union dpcd_source_backlight_get dpcd_backlight_get;
+
+	memset(&dpcd_backlight_get, 0, sizeof(union dpcd_source_backlight_get));
+
+	if (!link || (link->connector_signal != SIGNAL_TYPE_EDP &&
+			link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
+		return false;
+
+	if (!core_link_read_dpcd(link, DP_SOURCE_BACKLIGHT_CURRENT_PEAK,
+			dpcd_backlight_get.raw,
+			sizeof(union dpcd_source_backlight_get)))
+		return false;
+
+	*backlight_millinits_avg =
+		dpcd_backlight_get.bytes.backlight_millinits_avg;
+	*backlight_millinits_peak =
+		dpcd_backlight_get.bytes.backlight_millinits_peak;
+
+	/* On non-supported panels dpcd_read usually succeeds with 0 returned */
+	if (*backlight_millinits_avg == 0 ||
+			*backlight_millinits_avg > *backlight_millinits_peak)
+		return false;
+
+	return true;
+}
+
+bool link_backlight_enable_aux(struct dc_link *link, bool enable)
+{
+	uint8_t backlight_enable = enable ? 1 : 0;
+
+	if (!link || (link->connector_signal != SIGNAL_TYPE_EDP &&
+		link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
+		return false;
+
+	if (core_link_write_dpcd(link, DP_SOURCE_BACKLIGHT_ENABLE,
+		&backlight_enable, 1) != DC_OK)
+		return false;
+
+	return true;
+}
+
+// we read default from 0x320 because we expect BIOS wrote it there
+// regular get_backlight_nit reads from panel set at 0x326
+static bool read_default_bl_aux(struct dc_link *link, uint32_t *backlight_millinits)
+{
+	if (!link || (link->connector_signal != SIGNAL_TYPE_EDP &&
+		link->connector_signal != SIGNAL_TYPE_DISPLAY_PORT))
+		return false;
+
+	if (!core_link_read_dpcd(link, DP_SOURCE_BACKLIGHT_LEVEL,
+		(uint8_t *) backlight_millinits,
+		sizeof(uint32_t)))
+		return false;
+
+	return true;
+}
+
+bool set_default_brightness_aux(struct dc_link *link)
+{
+	uint32_t default_backlight;
+
+	if (link && link->dpcd_sink_ext_caps.bits.oled == 1) {
+		if (!read_default_bl_aux(link, &default_backlight))
+			default_backlight = 150000;
+		// if < 5 nits or > 5000, it might be wrong readback
+		if (default_backlight < 5000 || default_backlight > 5000000)
+			default_backlight = 150000; //
+
+		return dc_link_set_backlight_level_nits(link, true,
+				default_backlight, 0);
+	}
+	return false;
+}
+
+bool link_is_edp_ilr_optimization_required(struct dc_link *link,
+		struct dc_crtc_timing *crtc_timing)
+{
+	struct dc_link_settings link_setting;
+	uint8_t link_bw_set;
+	uint8_t link_rate_set;
+	uint32_t req_bw;
+	union lane_count_set lane_count_set = {0};
+
+	ASSERT(link || crtc_timing); // invalid input
+
+	if (link->dpcd_caps.edp_supported_link_rates_count == 0 ||
+			!link->panel_config.ilr.optimize_edp_link_rate)
+		return false;
+
+
+	// Read DPCD 00100h to find if standard link rates are set
+	core_link_read_dpcd(link, DP_LINK_BW_SET,
+				&link_bw_set, sizeof(link_bw_set));
+
+	if (link_bw_set) {
+		DC_LOG_EVENT_LINK_TRAINING("eDP ILR: Optimization required, VBIOS used link_bw_set\n");
+		return true;
+	}
+
+	// Read DPCD 00115h to find the edp link rate set used
+	core_link_read_dpcd(link, DP_LINK_RATE_SET,
+			    &link_rate_set, sizeof(link_rate_set));
+
+	// Read DPCD 00101h to find out the number of lanes currently set
+	core_link_read_dpcd(link, DP_LANE_COUNT_SET,
+				&lane_count_set.raw, sizeof(lane_count_set));
+
+	req_bw = dc_bandwidth_in_kbps_from_timing(crtc_timing);
+
+	if (!crtc_timing->flags.DSC)
+		dc_link_decide_edp_link_settings(link, &link_setting, req_bw);
+	else
+		decide_edp_link_settings_with_dsc(link, &link_setting, req_bw, LINK_RATE_UNKNOWN);
+
+	if (link->dpcd_caps.edp_supported_link_rates[link_rate_set] != link_setting.link_rate ||
+			lane_count_set.bits.LANE_COUNT_SET != link_setting.lane_count) {
+		DC_LOG_EVENT_LINK_TRAINING("eDP ILR: Optimization required, VBIOS link_rate_set not optimal\n");
+		return true;
+	}
+
+	DC_LOG_EVENT_LINK_TRAINING("eDP ILR: No optimization required, VBIOS set optimal link_rate_set\n");
+	return false;
+}
+
+void dc_link_edp_panel_backlight_power_on(struct dc_link *link, bool wait_for_hpd)
+{
+	if (link->connector_signal != SIGNAL_TYPE_EDP)
+		return;
+
+	link->dc->hwss.edp_power_control(link, true);
+	if (wait_for_hpd)
+		link->dc->hwss.edp_wait_for_hpd_ready(link, true);
+	if (link->dc->hwss.edp_backlight_control)
+		link->dc->hwss.edp_backlight_control(link, true);
+}
+
+bool dc_link_wait_for_t12(struct dc_link *link)
+{
+	if (link->connector_signal == SIGNAL_TYPE_EDP && link->dc->hwss.edp_wait_for_T12) {
+		link->dc->hwss.edp_wait_for_T12(link);
+
+		return true;
+	}
+
+	return false;
+}
+
+void link_edp_add_delay_for_T9(struct dc_link *link)
+{
+	if (link && link->panel_config.pps.extra_delay_backlight_off > 0)
+		udelay(link->panel_config.pps.extra_delay_backlight_off * 1000);
+}
+
+bool link_edp_receiver_ready_T9(struct dc_link *link)
+{
+	unsigned int tries = 0;
+	unsigned char sinkstatus = 0;
+	unsigned char edpRev = 0;
+	enum dc_status result = DC_OK;
+
+	result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev));
+
+	/* start from eDP version 1.2, SINK_STAUS indicate the sink is ready.*/
+	if (result == DC_OK && edpRev >= DP_EDP_12) {
+		do {
+			sinkstatus = 1;
+			result = core_link_read_dpcd(link, DP_SINK_STATUS, &sinkstatus, sizeof(sinkstatus));
+			if (sinkstatus == 0)
+				break;
+			if (result != DC_OK)
+				break;
+			udelay(100); //MAx T9
+		} while (++tries < 50);
+	}
+
+	return result;
+}
+
+bool link_edp_receiver_ready_T7(struct dc_link *link)
+{
+	unsigned char sinkstatus = 0;
+	unsigned char edpRev = 0;
+	enum dc_status result = DC_OK;
+
+	/* use absolute time stamp to constrain max T7*/
+	unsigned long long enter_timestamp = 0;
+	unsigned long long finish_timestamp = 0;
+	unsigned long long time_taken_in_ns = 0;
+
+	result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev));
+
+	if (result == DC_OK && edpRev >= DP_EDP_12) {
+		/* start from eDP version 1.2, SINK_STAUS indicate the sink is ready.*/
+		enter_timestamp = dm_get_timestamp(link->ctx);
+		do {
+			sinkstatus = 0;
+			result = core_link_read_dpcd(link, DP_SINK_STATUS, &sinkstatus, sizeof(sinkstatus));
+			if (sinkstatus == 1)
+				break;
+			if (result != DC_OK)
+				break;
+			udelay(25);
+			finish_timestamp = dm_get_timestamp(link->ctx);
+			time_taken_in_ns = dm_get_elapse_time_in_ns(link->ctx, finish_timestamp, enter_timestamp);
+		} while (time_taken_in_ns < 50 * 1000000); //MAx T7 is 50ms
+	}
+
+	if (link && link->panel_config.pps.extra_t7_ms > 0)
+		udelay(link->panel_config.pps.extra_t7_ms * 1000);
+
+	return result;
+}
+
+bool link_power_alpm_dpcd_enable(struct dc_link *link, bool enable)
+{
+	bool ret = false;
+	union dpcd_alpm_configuration alpm_config;
+
+	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {
+		memset(&alpm_config, 0, sizeof(alpm_config));
+
+		alpm_config.bits.ENABLE = (enable ? true : false);
+		ret = dm_helpers_dp_write_dpcd(link->ctx, link,
+				DP_RECEIVER_ALPM_CONFIG, &alpm_config.raw,
+				sizeof(alpm_config.raw));
+	}
+	return ret;
+}
+
+static struct pipe_ctx *get_pipe_from_link(const struct dc_link *link)
+{
+	int i;
+	struct dc *dc = link->ctx->dc;
+	struct pipe_ctx *pipe_ctx = NULL;
+
+	for (i = 0; i < MAX_PIPES; i++) {
+		if (dc->current_state->res_ctx.pipe_ctx[i].stream) {
+			if (dc->current_state->res_ctx.pipe_ctx[i].stream->link == link) {
+				pipe_ctx = &dc->current_state->res_ctx.pipe_ctx[i];
+				break;
+			}
+		}
+	}
+
+	return pipe_ctx;
+}
+
+bool dc_link_set_backlight_level(const struct dc_link *link,
+		uint32_t backlight_pwm_u16_16,
+		uint32_t frame_ramp)
+{
+	struct dc  *dc = link->ctx->dc;
+
+	DC_LOGGER_INIT(link->ctx->logger);
+	DC_LOG_BACKLIGHT("New Backlight level: %d (0x%X)\n",
+			backlight_pwm_u16_16, backlight_pwm_u16_16);
+
+	if (dc_is_embedded_signal(link->connector_signal)) {
+		struct pipe_ctx *pipe_ctx = get_pipe_from_link(link);
+
+		if (pipe_ctx) {
+			/* Disable brightness ramping when the display is blanked
+			 * as it can hang the DMCU
+			 */
+			if (pipe_ctx->plane_state == NULL)
+				frame_ramp = 0;
+		} else {
+			return false;
+		}
+
+		dc->hwss.set_backlight_level(
+				pipe_ctx,
+				backlight_pwm_u16_16,
+				frame_ramp);
+	}
+	return true;
+}
+
+bool dc_link_set_psr_allow_active(struct dc_link *link, const bool *allow_active,
+		bool wait, bool force_static, const unsigned int *power_opts)
+{
+	struct dc  *dc = link->ctx->dc;
+	struct dmcu *dmcu = dc->res_pool->dmcu;
+	struct dmub_psr *psr = dc->res_pool->psr;
+	unsigned int panel_inst;
+
+	if (psr == NULL && force_static)
+		return false;
+
+	if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
+		return false;
+
+	if ((allow_active != NULL) && (*allow_active == true) && (link->type == dc_connection_none)) {
+		// Don't enter PSR if panel is not connected
+		return false;
+	}
+
+	/* Set power optimization flag */
+	if (power_opts && link->psr_settings.psr_power_opt != *power_opts) {
+		link->psr_settings.psr_power_opt = *power_opts;
+
+		if (psr != NULL && link->psr_settings.psr_feature_enabled && psr->funcs->psr_set_power_opt)
+			psr->funcs->psr_set_power_opt(psr, link->psr_settings.psr_power_opt, panel_inst);
+	}
+
+	if (psr != NULL && link->psr_settings.psr_feature_enabled &&
+			force_static && psr->funcs->psr_force_static)
+		psr->funcs->psr_force_static(psr, panel_inst);
+
+	/* Enable or Disable PSR */
+	if (allow_active && link->psr_settings.psr_allow_active != *allow_active) {
+		link->psr_settings.psr_allow_active = *allow_active;
+
+		if (!link->psr_settings.psr_allow_active)
+			dc_z10_restore(dc);
+
+		if (psr != NULL && link->psr_settings.psr_feature_enabled) {
+			psr->funcs->psr_enable(psr, link->psr_settings.psr_allow_active, wait, panel_inst);
+		} else if ((dmcu != NULL && dmcu->funcs->is_dmcu_initialized(dmcu)) &&
+			link->psr_settings.psr_feature_enabled)
+			dmcu->funcs->set_psr_enable(dmcu, link->psr_settings.psr_allow_active, wait);
+		else
+			return false;
+	}
+	return true;
+}
+
+bool dc_link_get_psr_state(const struct dc_link *link, enum dc_psr_state *state)
+{
+	struct dc  *dc = link->ctx->dc;
+	struct dmcu *dmcu = dc->res_pool->dmcu;
+	struct dmub_psr *psr = dc->res_pool->psr;
+	unsigned int panel_inst;
+
+	if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
+		return false;
+
+	if (psr != NULL && link->psr_settings.psr_feature_enabled)
+		psr->funcs->psr_get_state(psr, state, panel_inst);
+	else if (dmcu != NULL && link->psr_settings.psr_feature_enabled)
+		dmcu->funcs->get_psr_state(dmcu, state);
+
+	return true;
+}
+
+static inline enum physical_phy_id
+transmitter_to_phy_id(struct dc_link *link)
+{
+	struct dc_context *dc_ctx = link->ctx;
+	enum transmitter transmitter_value = link->link_enc->transmitter;
+
+	switch (transmitter_value) {
+	case TRANSMITTER_UNIPHY_A:
+		return PHYLD_0;
+	case TRANSMITTER_UNIPHY_B:
+		return PHYLD_1;
+	case TRANSMITTER_UNIPHY_C:
+		return PHYLD_2;
+	case TRANSMITTER_UNIPHY_D:
+		return PHYLD_3;
+	case TRANSMITTER_UNIPHY_E:
+		return PHYLD_4;
+	case TRANSMITTER_UNIPHY_F:
+		return PHYLD_5;
+	case TRANSMITTER_NUTMEG_CRT:
+		return PHYLD_6;
+	case TRANSMITTER_TRAVIS_CRT:
+		return PHYLD_7;
+	case TRANSMITTER_TRAVIS_LCD:
+		return PHYLD_8;
+	case TRANSMITTER_UNIPHY_G:
+		return PHYLD_9;
+	case TRANSMITTER_COUNT:
+		return PHYLD_COUNT;
+	case TRANSMITTER_UNKNOWN:
+		return PHYLD_UNKNOWN;
+	default:
+		DC_ERROR("Unknown transmitter value %d\n", transmitter_value);
+		return PHYLD_UNKNOWN;
+	}
+}
+
+bool dc_link_setup_psr(struct dc_link *link,
+		const struct dc_stream_state *stream, struct psr_config *psr_config,
+		struct psr_context *psr_context)
+{
+	struct dc *dc;
+	struct dmcu *dmcu;
+	struct dmub_psr *psr;
+	int i;
+	unsigned int panel_inst;
+	/* updateSinkPsrDpcdConfig*/
+	union dpcd_psr_configuration psr_configuration;
+	union dpcd_sink_active_vtotal_control_mode vtotal_control = {0};
+
+	psr_context->controllerId = CONTROLLER_ID_UNDEFINED;
+
+	if (!link)
+		return false;
+
+	dc = link->ctx->dc;
+	dmcu = dc->res_pool->dmcu;
+	psr = dc->res_pool->psr;
+
+	if (!dmcu && !psr)
+		return false;
+
+	if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
+		return false;
+
+
+	memset(&psr_configuration, 0, sizeof(psr_configuration));
+
+	psr_configuration.bits.ENABLE                    = 1;
+	psr_configuration.bits.CRC_VERIFICATION          = 1;
+	psr_configuration.bits.FRAME_CAPTURE_INDICATION  =
+			psr_config->psr_frame_capture_indication_req;
+
+	/* Check for PSR v2*/
+	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {
+		/* For PSR v2 selective update.
+		 * Indicates whether sink should start capturing
+		 * immediately following active scan line,
+		 * or starting with the 2nd active scan line.
+		 */
+		psr_configuration.bits.LINE_CAPTURE_INDICATION = 0;
+		/*For PSR v2, determines whether Sink should generate
+		 * IRQ_HPD when CRC mismatch is detected.
+		 */
+		psr_configuration.bits.IRQ_HPD_WITH_CRC_ERROR    = 1;
+		/* For PSR v2, set the bit when the Source device will
+		 * be enabling PSR2 operation.
+		 */
+		psr_configuration.bits.ENABLE_PSR2    = 1;
+		/* For PSR v2, the Sink device must be able to receive
+		 * SU region updates early in the frame time.
+		 */
+		psr_configuration.bits.EARLY_TRANSPORT_ENABLE    = 1;
+	}
+
+	dm_helpers_dp_write_dpcd(
+		link->ctx,
+		link,
+		368,
+		&psr_configuration.raw,
+		sizeof(psr_configuration.raw));
+
+	if (link->psr_settings.psr_version == DC_PSR_VERSION_SU_1) {
+		link_power_alpm_dpcd_enable(link, true);
+		psr_context->su_granularity_required =
+			psr_config->su_granularity_required;
+		psr_context->su_y_granularity =
+			psr_config->su_y_granularity;
+		psr_context->line_time_in_us = psr_config->line_time_in_us;
+
+		/* linux must be able to expose AMD Source DPCD definition
+		 * in order to support FreeSync PSR
+		 */
+		if (link->psr_settings.psr_vtotal_control_support) {
+			psr_context->rate_control_caps = psr_config->rate_control_caps;
+			vtotal_control.bits.ENABLE = true;
+			core_link_write_dpcd(link, DP_SINK_PSR_ACTIVE_VTOTAL_CONTROL_MODE,
+							&vtotal_control.raw, sizeof(vtotal_control.raw));
+		}
+	}
+
+	psr_context->channel = link->ddc->ddc_pin->hw_info.ddc_channel;
+	psr_context->transmitterId = link->link_enc->transmitter;
+	psr_context->engineId = link->link_enc->preferred_engine;
+
+	for (i = 0; i < MAX_PIPES; i++) {
+		if (dc->current_state->res_ctx.pipe_ctx[i].stream
+				== stream) {
+			/* dmcu -1 for all controller id values,
+			 * therefore +1 here
+			 */
+			psr_context->controllerId =
+				dc->current_state->res_ctx.
+				pipe_ctx[i].stream_res.tg->inst + 1;
+			break;
+		}
+	}
+
+	/* Hardcoded for now.  Can be Pcie or Uniphy (or Unknown)*/
+	psr_context->phyType = PHY_TYPE_UNIPHY;
+	/*PhyId is associated with the transmitter id*/
+	psr_context->smuPhyId = transmitter_to_phy_id(link);
+
+	psr_context->crtcTimingVerticalTotal = stream->timing.v_total;
+	psr_context->vsync_rate_hz = div64_u64(div64_u64((stream->
+					timing.pix_clk_100hz * 100),
+					stream->timing.v_total),
+					stream->timing.h_total);
+
+	psr_context->psrSupportedDisplayConfig = true;
+	psr_context->psrExitLinkTrainingRequired =
+		psr_config->psr_exit_link_training_required;
+	psr_context->sdpTransmitLineNumDeadline =
+		psr_config->psr_sdp_transmit_line_num_deadline;
+	psr_context->psrFrameCaptureIndicationReq =
+		psr_config->psr_frame_capture_indication_req;
+
+	psr_context->skipPsrWaitForPllLock = 0; /* only = 1 in KV */
+
+	psr_context->numberOfControllers =
+			link->dc->res_pool->timing_generator_count;
+
+	psr_context->rfb_update_auto_en = true;
+
+	/* 2 frames before enter PSR. */
+	psr_context->timehyst_frames = 2;
+	/* half a frame
+	 * (units in 100 lines, i.e. a value of 1 represents 100 lines)
+	 */
+	psr_context->hyst_lines = stream->timing.v_total / 2 / 100;
+	psr_context->aux_repeats = 10;
+
+	psr_context->psr_level.u32all = 0;
+
+	/*skip power down the single pipe since it blocks the cstate*/
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+	if (link->ctx->asic_id.chip_family >= FAMILY_RV) {
+		switch (link->ctx->asic_id.chip_family) {
+		case FAMILY_YELLOW_CARP:
+		case AMDGPU_FAMILY_GC_10_3_6:
+		case AMDGPU_FAMILY_GC_11_0_1:
+			if (dc->debug.disable_z10 || dc->debug.psr_skip_crtc_disable)
+				psr_context->psr_level.bits.SKIP_CRTC_DISABLE = true;
+			break;
+		default:
+			psr_context->psr_level.bits.SKIP_CRTC_DISABLE = true;
+			break;
+		}
+	}
+#else
+	if (link->ctx->asic_id.chip_family >= FAMILY_RV)
+		psr_context->psr_level.bits.SKIP_CRTC_DISABLE = true;
+#endif
+
+	/* SMU will perform additional powerdown sequence.
+	 * For unsupported ASICs, set psr_level flag to skip PSR
+	 *  static screen notification to SMU.
+	 *  (Always set for DAL2, did not check ASIC)
+	 */
+	psr_context->allow_smu_optimizations = psr_config->allow_smu_optimizations;
+	psr_context->allow_multi_disp_optimizations = psr_config->allow_multi_disp_optimizations;
+
+	/* Complete PSR entry before aborting to prevent intermittent
+	 * freezes on certain eDPs
+	 */
+	psr_context->psr_level.bits.DISABLE_PSR_ENTRY_ABORT = 1;
+
+	/* Disable ALPM first for compatible non-ALPM panel now */
+	psr_context->psr_level.bits.DISABLE_ALPM = 0;
+	psr_context->psr_level.bits.ALPM_DEFAULT_PD_MODE = 1;
+
+	/* Controls additional delay after remote frame capture before
+	 * continuing power down, default = 0
+	 */
+	psr_context->frame_delay = 0;
+
+	if (psr) {
+		link->psr_settings.psr_feature_enabled = psr->funcs->psr_copy_settings(psr,
+			link, psr_context, panel_inst);
+		link->psr_settings.psr_power_opt = 0;
+		link->psr_settings.psr_allow_active = 0;
+	} else {
+		link->psr_settings.psr_feature_enabled = dmcu->funcs->setup_psr(dmcu, link, psr_context);
+	}
+
+	/* psr_enabled == 0 indicates setup_psr did not succeed, but this
+	 * should not happen since firmware should be running at this point
+	 */
+	if (link->psr_settings.psr_feature_enabled == 0)
+		ASSERT(0);
+
+	return true;
+
+}
+
+void link_get_psr_residency(const struct dc_link *link, uint32_t *residency)
+{
+	struct dc  *dc = link->ctx->dc;
+	struct dmub_psr *psr = dc->res_pool->psr;
+	unsigned int panel_inst;
+
+	if (!dc_get_edp_link_panel_inst(dc, link, &panel_inst))
+		return;
+
+	// PSR residency measurements only supported on DMCUB
+	if (psr != NULL && link->psr_settings.psr_feature_enabled)
+		psr->funcs->psr_get_residency(psr, residency, panel_inst);
+	else
+		*residency = 0;
+}
+bool link_set_sink_vtotal_in_psr_active(const struct dc_link *link, uint16_t psr_vtotal_idle, uint16_t psr_vtotal_su)
+{
+	struct dc *dc = link->ctx->dc;
+	struct dmub_psr *psr = dc->res_pool->psr;
+
+	if (psr == NULL || !link->psr_settings.psr_feature_enabled || !link->psr_settings.psr_vtotal_control_support)
+		return false;
+
+	psr->funcs->psr_set_sink_vtotal_in_psr_active(psr, psr_vtotal_idle, psr_vtotal_su);
+
+	return true;
+}
+
+static struct abm *get_abm_from_stream_res(const struct dc_link *link)
+{
+	int i;
+	struct dc *dc = link->ctx->dc;
+	struct abm *abm = NULL;
+
+	for (i = 0; i < MAX_PIPES; i++) {
+		struct pipe_ctx pipe_ctx = dc->current_state->res_ctx.pipe_ctx[i];
+		struct dc_stream_state *stream = pipe_ctx.stream;
+
+		if (stream && stream->link == link) {
+			abm = pipe_ctx.stream_res.abm;
+			break;
+		}
+	}
+	return abm;
+}
+
+int dc_link_get_backlight_level(const struct dc_link *link)
+{
+	struct abm *abm = get_abm_from_stream_res(link);
+	struct panel_cntl *panel_cntl = link->panel_cntl;
+	struct dc  *dc = link->ctx->dc;
+	struct dmcu *dmcu = dc->res_pool->dmcu;
+	bool fw_set_brightness = true;
+
+	if (dmcu)
+		fw_set_brightness = dmcu->funcs->is_dmcu_initialized(dmcu);
+
+	if (!fw_set_brightness && panel_cntl->funcs->get_current_backlight)
+		return panel_cntl->funcs->get_current_backlight(panel_cntl);
+	else if (abm != NULL && abm->funcs->get_current_backlight != NULL)
+		return (int) abm->funcs->get_current_backlight(abm);
+	else
+		return DC_ERROR_UNEXPECTED;
+}
+
+int dc_link_get_target_backlight_pwm(const struct dc_link *link)
+{
+	struct abm *abm = get_abm_from_stream_res(link);
+
+	if (abm == NULL || abm->funcs->get_target_backlight == NULL)
+		return DC_ERROR_UNEXPECTED;
+
+	return (int) abm->funcs->get_target_backlight(abm);
+}
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.h b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.h
new file mode 100644
index 0000000000000..7f91a564b0893
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2022 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
+ *
+ */
+
+#ifndef __DC_LINK_EDP_PANEL_CONTROL_H__
+#define __DC_LINK_EDP_PANEL_CONTROL_H__
+#include "link.h"
+
+enum dp_panel_mode dp_get_panel_mode(struct dc_link *link);
+void dp_set_panel_mode(struct dc_link *link, enum dp_panel_mode panel_mode);
+bool set_default_brightness_aux(struct dc_link *link);
+#endif /* __DC_LINK_EDP_POWER_CONTROL_H__ */