drm/amd/dc: Add dc display driver (v2)

Supported DCE versions: 8.0, 10.0, 11.0, 11.2

v2: rebase against 4.11

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 2176 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
new file mode 100644
index 000000000000..86e55d028cbf
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
@@ -0,0 +1,2176 @@
+/*
+ * Copyright 2012-15 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "reg_helper.h"
+
+#include "core_types.h"
+#include "link_encoder.h"
+#include "dce_link_encoder.h"
+#include "stream_encoder.h"
+#include "i2caux_interface.h"
+#include "dc_bios_types.h"
+
+#include "gpio_service_interface.h"
+
+#include "dce/dce_11_0_d.h"
+#include "dce/dce_11_0_sh_mask.h"
+#include "dce/dce_11_0_enum.h"
+
+#ifndef ATOM_S2_CURRENT_BL_LEVEL_MASK
+#define ATOM_S2_CURRENT_BL_LEVEL_MASK   0x0000FF00L
+#define ATOM_S2_VRI_BRIGHT_ENABLE       0x20000000L
+#endif
+
+#ifndef ATOM_S2_CURRENT_BL_LEVEL_SHIFT
+#define ATOM_S2_CURRENT_BL_LEVEL_SHIFT  8
+#endif
+
+#ifndef HPD0_DC_HPD_CONTROL__DC_HPD_EN_MASK
+#define HPD0_DC_HPD_CONTROL__DC_HPD_EN_MASK  0x10000000L
+#endif
+
+#ifndef HPD0_DC_HPD_CONTROL__DC_HPD_EN__SHIFT
+#define HPD0_DC_HPD_CONTROL__DC_HPD_EN__SHIFT  0x1c
+#endif
+
+#define CTX \
+	enc110->base.ctx
+
+#define REG(reg)\
+	(enc110->link_regs->reg)
+
+#define AUX_REG(reg)\
+	(enc110->aux_regs->reg)
+
+#define HPD_REG(reg)\
+	(enc110->hpd_regs->reg)
+
+/* For current ASICs pixel clock - 600MHz */
+#define MAX_ENCODER_CLK 600000
+
+#define DCE11_UNIPHY_MAX_PIXEL_CLK_IN_KHZ 594000
+
+#define DEFAULT_AUX_MAX_DATA_SIZE 16
+#define AUX_MAX_DEFER_WRITE_RETRY 20
+/*
+ * @brief
+ * Trigger Source Select
+ * ASIC-dependent, actual values for register programming
+ */
+#define DCE110_DIG_FE_SOURCE_SELECT_INVALID 0x0
+#define DCE110_DIG_FE_SOURCE_SELECT_DIGA 0x1
+#define DCE110_DIG_FE_SOURCE_SELECT_DIGB 0x2
+#define DCE110_DIG_FE_SOURCE_SELECT_DIGC 0x4
+#define DCE110_DIG_FE_SOURCE_SELECT_DIGD 0x08
+#define DCE110_DIG_FE_SOURCE_SELECT_DIGE 0x10
+#define DCE110_DIG_FE_SOURCE_SELECT_DIGF 0x20
+
+/* all values are in milliseconds */
+/* For eDP, after power-up/power/down,
+ * 300/500 msec max. delay from LCDVCC to black video generation */
+#define PANEL_POWER_UP_TIMEOUT 300
+#define PANEL_POWER_DOWN_TIMEOUT 500
+#define HPD_CHECK_INTERVAL 10
+
+/* Minimum pixel clock, in KHz. For TMDS signal is 25.00 MHz */
+#define TMDS_MIN_PIXEL_CLOCK 25000
+/* Maximum pixel clock, in KHz. For TMDS signal is 165.00 MHz */
+#define TMDS_MAX_PIXEL_CLOCK 165000
+/* For current ASICs pixel clock - 600MHz */
+#define MAX_ENCODER_CLOCK 600000
+
+/* Set the ABM Pipe */
+#define MCP_ABM_PIPE_SET 0x66
+/* Set the ABM level */
+#define MCP_ABM_LEVEL_SET 0x65
+/* Set backlight level */
+#define MCP_BL_SET 0x67
+
+/* PSR related commands */
+#define PSR_ENABLE 0x20
+#define PSR_EXIT 0x21
+#define PSR_SET 0x23
+
+/*TODO: Used for psr wakeup for set backlight level*/
+static unsigned int psr_crtc_offset;
+
+/* registers setting needs to be save and restored used at InitBacklight */
+static struct dce110_abm_backlight_registers stored_backlight_registers;
+
+enum {
+	DP_MST_UPDATE_MAX_RETRY = 50
+};
+
+#define DIG_REG(reg)\
+	(reg + enc110->offsets.dig)
+
+#define DP_REG(reg)\
+	(reg + enc110->offsets.dp)
+
+static const struct link_encoder_funcs dce110_lnk_enc_funcs = {
+	.validate_output_with_stream =
+		dce110_link_encoder_validate_output_with_stream,
+	.hw_init = dce110_link_encoder_hw_init,
+	.setup = dce110_link_encoder_setup,
+	.enable_tmds_output = dce110_link_encoder_enable_tmds_output,
+	.enable_dp_output = dce110_link_encoder_enable_dp_output,
+	.enable_dp_mst_output = dce110_link_encoder_enable_dp_mst_output,
+	.disable_output = dce110_link_encoder_disable_output,
+	.dp_set_lane_settings = dce110_link_encoder_dp_set_lane_settings,
+	.dp_set_phy_pattern = dce110_link_encoder_dp_set_phy_pattern,
+	.update_mst_stream_allocation_table =
+		dce110_link_encoder_update_mst_stream_allocation_table,
+	.set_lcd_backlight_level = dce110_link_encoder_set_lcd_backlight_level,
+	.set_dmcu_backlight_level =
+			dce110_link_encoder_set_dmcu_backlight_level,
+	.init_dmcu_backlight_settings =
+			dce110_link_encoder_init_dmcu_backlight_settings,
+	.set_dmcu_abm_level = dce110_link_encoder_set_dmcu_abm_level,
+	.set_dmcu_psr_enable = dce110_link_encoder_set_dmcu_psr_enable,
+	.setup_dmcu_psr = dce110_link_encoder_setup_dmcu_psr,
+	.backlight_control = dce110_link_encoder_edp_backlight_control,
+	.power_control = dce110_link_encoder_edp_power_control,
+	.connect_dig_be_to_fe = dce110_link_encoder_connect_dig_be_to_fe,
+	.enable_hpd = dce110_link_encoder_enable_hpd,
+	.disable_hpd = dce110_link_encoder_disable_hpd,
+	.destroy = dce110_link_encoder_destroy
+};
+
+
+static enum bp_result link_transmitter_control(
+	struct dce110_link_encoder *enc110,
+	struct bp_transmitter_control *cntl)
+{
+	enum bp_result result;
+	struct dc_bios *bp = enc110->base.ctx->dc_bios;
+
+	result = bp->funcs->transmitter_control(bp, cntl);
+
+	return result;
+}
+
+static void enable_phy_bypass_mode(
+	struct dce110_link_encoder *enc110,
+	bool enable)
+{
+	/* This register resides in DP back end block;
+	 * transmitter is used for the offset */
+
+	REG_UPDATE(DP_DPHY_CNTL, DPHY_BYPASS, enable);
+
+}
+
+static void disable_prbs_symbols(
+	struct dce110_link_encoder *enc110,
+	bool disable)
+{
+	/* This register resides in DP back end block;
+	 * transmitter is used for the offset */
+
+	REG_UPDATE_4(DP_DPHY_CNTL,
+			DPHY_ATEST_SEL_LANE0, disable,
+			DPHY_ATEST_SEL_LANE1, disable,
+			DPHY_ATEST_SEL_LANE2, disable,
+			DPHY_ATEST_SEL_LANE3, disable);
+}
+
+static void disable_prbs_mode(
+	struct dce110_link_encoder *enc110)
+{
+	/* This register resides in DP back end block;
+	 * transmitter is used for the offset */
+
+	REG_UPDATE(DP_DPHY_PRBS_CNTL, DPHY_PRBS_EN, 0);
+}
+
+static void program_pattern_symbols(
+	struct dce110_link_encoder *enc110,
+	uint16_t pattern_symbols[8])
+{
+	/* This register resides in DP back end block;
+	 * transmitter is used for the offset */
+
+	REG_SET_3(DP_DPHY_SYM0, 0,
+			DPHY_SYM1, pattern_symbols[0],
+			DPHY_SYM2, pattern_symbols[1],
+			DPHY_SYM3, pattern_symbols[2]);
+
+	/* This register resides in DP back end block;
+	 * transmitter is used for the offset */
+
+	REG_SET_3(DP_DPHY_SYM1, 0,
+			DPHY_SYM4, pattern_symbols[3],
+			DPHY_SYM5, pattern_symbols[4],
+			DPHY_SYM6, pattern_symbols[5]);
+
+	/* This register resides in DP back end block;
+	 * transmitter is used for the offset */
+
+	REG_SET_2(DP_DPHY_SYM2, 0,
+			DPHY_SYM7, pattern_symbols[6],
+			DPHY_SYM8, pattern_symbols[7]);
+}
+
+static void set_dp_phy_pattern_d102(
+	struct dce110_link_encoder *enc110)
+{
+	/* Disable PHY Bypass mode to setup the test pattern */
+	enable_phy_bypass_mode(enc110, false);
+
+	/* For 10-bit PRBS or debug symbols
+	 * please use the following sequence: */
+
+	/* Enable debug symbols on the lanes */
+
+	disable_prbs_symbols(enc110, true);
+
+	/* Disable PRBS mode,
+	 * make sure DPHY_PRBS_CNTL.DPHY_PRBS_EN=0 */
+
+	disable_prbs_mode(enc110);
+
+	/* Program debug symbols to be output */
+	{
+		uint16_t pattern_symbols[8] = {
+			0x2AA, 0x2AA, 0x2AA, 0x2AA,
+			0x2AA, 0x2AA, 0x2AA, 0x2AA
+		};
+
+		program_pattern_symbols(enc110, pattern_symbols);
+	}
+
+	/* Enable phy bypass mode to enable the test pattern */
+
+	enable_phy_bypass_mode(enc110, true);
+}
+
+static void set_link_training_complete(
+	struct dce110_link_encoder *enc110,
+	bool complete)
+{
+	/* This register resides in DP back end block;
+	 * transmitter is used for the offset */
+
+	REG_UPDATE(DP_LINK_CNTL, DP_LINK_TRAINING_COMPLETE, complete);
+
+}
+
+void dce110_link_encoder_set_dp_phy_pattern_training_pattern(
+	struct link_encoder *enc,
+	uint32_t index)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	/* Write Training Pattern */
+
+	REG_WRITE(DP_DPHY_TRAINING_PATTERN_SEL, index);
+
+	/* Set HW Register Training Complete to false */
+
+	set_link_training_complete(enc110, false);
+
+	/* Disable PHY Bypass mode to output Training Pattern */
+
+	enable_phy_bypass_mode(enc110, false);
+
+	/* Disable PRBS mode,
+	 * make sure DPHY_PRBS_CNTL.DPHY_PRBS_EN=0 */
+
+	disable_prbs_mode(enc110);
+}
+
+static void set_dp_phy_pattern_symbol_error(
+	struct dce110_link_encoder *enc110)
+{
+	/* Disable PHY Bypass mode to setup the test pattern */
+	uint32_t value = 0x0;
+
+	enable_phy_bypass_mode(enc110, false);
+
+	/* program correct panel mode*/
+	{
+		ASSERT(REG(DP_DPHY_INTERNAL_CTRL));
+		/*DCE 120 does not have this reg*/
+
+		REG_WRITE(DP_DPHY_INTERNAL_CTRL, value);
+	}
+
+	/* A PRBS23 pattern is used for most DP electrical measurements. */
+
+	/* Enable PRBS symbols on the lanes */
+
+	disable_prbs_symbols(enc110, false);
+
+	/* For PRBS23 Set bit DPHY_PRBS_SEL=1 and Set bit DPHY_PRBS_EN=1 */
+	{
+		REG_UPDATE_2(DP_DPHY_PRBS_CNTL,
+					DPHY_PRBS_SEL, 1,
+					DPHY_PRBS_EN, 1);
+	}
+
+	/* Enable phy bypass mode to enable the test pattern */
+
+	enable_phy_bypass_mode(enc110, true);
+}
+
+static void set_dp_phy_pattern_prbs7(
+	struct dce110_link_encoder *enc110)
+{
+	/* Disable PHY Bypass mode to setup the test pattern */
+
+	enable_phy_bypass_mode(enc110, false);
+
+	/* A PRBS7 pattern is used for most DP electrical measurements. */
+
+	/* Enable PRBS symbols on the lanes */
+
+	disable_prbs_symbols(enc110, false);
+
+	/* For PRBS7 Set bit DPHY_PRBS_SEL=0 and Set bit DPHY_PRBS_EN=1 */
+	{
+		REG_UPDATE_2(DP_DPHY_PRBS_CNTL,
+					DPHY_PRBS_SEL, 0,
+					DPHY_PRBS_EN, 1);
+	}
+
+	/* Enable phy bypass mode to enable the test pattern */
+
+	enable_phy_bypass_mode(enc110, true);
+}
+
+static void set_dp_phy_pattern_80bit_custom(
+	struct dce110_link_encoder *enc110,
+	const uint8_t *pattern)
+{
+	/* Disable PHY Bypass mode to setup the test pattern */
+	enable_phy_bypass_mode(enc110, false);
+
+	/* Enable debug symbols on the lanes */
+
+	disable_prbs_symbols(enc110, true);
+
+	/* Enable PHY bypass mode to enable the test pattern */
+	/* TODO is it really needed ? */
+
+	enable_phy_bypass_mode(enc110, true);
+
+	/* Program 80 bit custom pattern */
+	{
+		uint16_t pattern_symbols[8];
+
+		pattern_symbols[0] =
+			((pattern[1] & 0x03) << 8) | pattern[0];
+		pattern_symbols[1] =
+			((pattern[2] & 0x0f) << 6) | ((pattern[1] >> 2) & 0x3f);
+		pattern_symbols[2] =
+			((pattern[3] & 0x3f) << 4) | ((pattern[2] >> 4) & 0x0f);
+		pattern_symbols[3] =
+			(pattern[4] << 2) | ((pattern[3] >> 6) & 0x03);
+		pattern_symbols[4] =
+			((pattern[6] & 0x03) << 8) | pattern[5];
+		pattern_symbols[5] =
+			((pattern[7] & 0x0f) << 6) | ((pattern[6] >> 2) & 0x3f);
+		pattern_symbols[6] =
+			((pattern[8] & 0x3f) << 4) | ((pattern[7] >> 4) & 0x0f);
+		pattern_symbols[7] =
+			(pattern[9] << 2) | ((pattern[8] >> 6) & 0x03);
+
+		program_pattern_symbols(enc110, pattern_symbols);
+	}
+
+	/* Enable phy bypass mode to enable the test pattern */
+
+	enable_phy_bypass_mode(enc110, true);
+}
+
+static void set_dp_phy_pattern_hbr2_compliance(
+	struct dce110_link_encoder *enc110)
+{
+
+	/* previously there is a register DP_HBR2_EYE_PATTERN
+	 * that is enabled to get the pattern.
+	 * But it does not work with the latest spec change,
+	 * so we are programming the following registers manually.
+	 *
+	 * The following settings have been confirmed
+	 * by Nick Chorney and Sandra Liu */
+
+	/* Disable PHY Bypass mode to setup the test pattern */
+
+	enable_phy_bypass_mode(enc110, false);
+
+	/* Setup DIG encoder in DP SST mode */
+
+	enc110->base.funcs->setup(&enc110->base, SIGNAL_TYPE_DISPLAY_PORT);
+
+	/* program correct panel mode*/
+	{
+		ASSERT(REG(DP_DPHY_INTERNAL_CTRL));
+
+		REG_WRITE(DP_DPHY_INTERNAL_CTRL, 0x0);
+	}
+
+	/* no vbid after BS (SR)
+	 * DP_LINK_FRAMING_CNTL changed history Sandra Liu
+	 * 11000260 / 11000104 / 110000FC */
+
+	/* TODO DP_LINK_FRAMING_CNTL should always use hardware default value
+	 * output  except output hbr2_compliance pattern for physical PHY
+	 * measurement. This is not normal usage case. SW should reset this
+	 * register to hardware default value after end use of HBR2 eye
+	 */
+	BREAK_TO_DEBUGGER();
+	/* TODO: do we still need this, find out at compliance test
+	addr = mmDP_LINK_FRAMING_CNTL + fe_addr_offset;
+
+	value = dal_read_reg(ctx, addr);
+
+	set_reg_field_value(value, 0xFC,
+			DP_LINK_FRAMING_CNTL, DP_IDLE_BS_INTERVAL);
+	set_reg_field_value(value, 1,
+			DP_LINK_FRAMING_CNTL, DP_VBID_DISABLE);
+	set_reg_field_value(value, 1,
+			DP_LINK_FRAMING_CNTL, DP_VID_ENHANCED_FRAME_MODE);
+
+	dal_write_reg(ctx, addr, value);
+	 */
+	/* swap every BS with SR */
+
+	REG_UPDATE(DP_DPHY_SCRAM_CNTL, DPHY_SCRAMBLER_BS_COUNT, 0);
+
+	/*TODO add support for this test pattern
+	 * support_dp_hbr2_eye_pattern
+	 */
+
+	/* set link training complete */
+	set_link_training_complete(enc110, true);
+	/* do not enable video stream */
+
+	REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, 0);
+
+	/* Disable PHY Bypass mode to setup the test pattern */
+
+	enable_phy_bypass_mode(enc110, false);
+}
+
+static void set_dp_phy_pattern_passthrough_mode(
+	struct dce110_link_encoder *enc110,
+	enum dp_panel_mode panel_mode)
+{
+	uint32_t value;
+
+	/* program correct panel mode */
+	{
+		ASSERT(REG(DP_DPHY_INTERNAL_CTRL));
+		value = REG_READ(DP_DPHY_INTERNAL_CTRL);
+
+		switch (panel_mode) {
+		case DP_PANEL_MODE_EDP:
+			value = 0x1;
+		break;
+		case DP_PANEL_MODE_SPECIAL:
+			value = 0x11;
+		break;
+		default:
+			value = 0x0;
+			break;
+		}
+
+		REG_WRITE(DP_DPHY_INTERNAL_CTRL, value);
+	}
+
+	REG_UPDATE(DP_DPHY_SCRAM_CNTL, DPHY_SCRAMBLER_BS_COUNT, 0x1FF);
+
+	/* set link training complete */
+
+	set_link_training_complete(enc110, true);
+
+	/* Disable PHY Bypass mode to setup the test pattern */
+
+	enable_phy_bypass_mode(enc110, false);
+
+	/* Disable PRBS mode,
+	 * make sure DPHY_PRBS_CNTL.DPHY_PRBS_EN=0 */
+
+	disable_prbs_mode(enc110);
+}
+
+/* return value is bit-vector */
+static uint8_t get_frontend_source(
+	enum engine_id engine)
+{
+	switch (engine) {
+	case ENGINE_ID_DIGA:
+		return DCE110_DIG_FE_SOURCE_SELECT_DIGA;
+	case ENGINE_ID_DIGB:
+		return DCE110_DIG_FE_SOURCE_SELECT_DIGB;
+	case ENGINE_ID_DIGC:
+		return DCE110_DIG_FE_SOURCE_SELECT_DIGC;
+	case ENGINE_ID_DIGD:
+		return DCE110_DIG_FE_SOURCE_SELECT_DIGD;
+	case ENGINE_ID_DIGE:
+		return DCE110_DIG_FE_SOURCE_SELECT_DIGE;
+	case ENGINE_ID_DIGF:
+		return DCE110_DIG_FE_SOURCE_SELECT_DIGF;
+	default:
+		ASSERT_CRITICAL(false);
+		return DCE110_DIG_FE_SOURCE_SELECT_INVALID;
+	}
+}
+
+static void configure_encoder(
+	struct dce110_link_encoder *enc110,
+	const struct dc_link_settings *link_settings)
+{
+	/* set number of lanes */
+
+	REG_SET(DP_CONFIG, 0,
+			DP_UDI_LANES, link_settings->lane_count - LANE_COUNT_ONE);
+
+	/* setup scrambler */
+	REG_UPDATE(DP_DPHY_SCRAM_CNTL, DPHY_SCRAMBLER_ADVANCE, 1);
+}
+
+static bool is_panel_powered_on(struct dce110_link_encoder *enc110)
+{
+	bool ret;
+	uint32_t value;
+
+	REG_GET(LVTMA_PWRSEQ_STATE, LVTMA_PWRSEQ_TARGET_STATE_R, &value);
+	ret = value;
+
+	return ret == 1;
+}
+
+
+/* TODO duplicate of dc_link.c version */
+static struct gpio *get_hpd_gpio(const struct link_encoder *enc)
+{
+	enum bp_result bp_result;
+	struct dc_bios *dcb = enc->ctx->dc_bios;
+	struct graphics_object_hpd_info hpd_info;
+	struct gpio_pin_info pin_info;
+
+	if (dcb->funcs->get_hpd_info(dcb, enc->connector, &hpd_info) != BP_RESULT_OK)
+		return NULL;
+
+	bp_result = dcb->funcs->get_gpio_pin_info(dcb,
+		hpd_info.hpd_int_gpio_uid, &pin_info);
+
+	if (bp_result != BP_RESULT_OK) {
+		ASSERT(bp_result == BP_RESULT_NORECORD);
+		return NULL;
+	}
+
+	return dal_gpio_service_create_irq(
+		enc->ctx->gpio_service,
+		pin_info.offset,
+		pin_info.mask);
+}
+
+/*
+ * @brief
+ * eDP only.
+ */
+static void link_encoder_edp_wait_for_hpd_ready(
+	struct dce110_link_encoder *enc110,
+	bool power_up)
+{
+	struct dc_context *ctx = enc110->base.ctx;
+	struct graphics_object_id connector = enc110->base.connector;
+	struct gpio *hpd;
+	bool edp_hpd_high = false;
+	uint32_t time_elapsed = 0;
+	uint32_t timeout = power_up ?
+		PANEL_POWER_UP_TIMEOUT : PANEL_POWER_DOWN_TIMEOUT;
+
+	if (dal_graphics_object_id_get_connector_id(connector) !=
+		CONNECTOR_ID_EDP) {
+		BREAK_TO_DEBUGGER();
+		return;
+	}
+
+	if (!power_up)
+		/* from KV, we will not HPD low after turning off VCC -
+		 * instead, we will check the SW timer in power_up(). */
+		return;
+
+	/* when we power on/off the eDP panel,
+	 * we need to wait until SENSE bit is high/low */
+
+	/* obtain HPD */
+	/* TODO what to do with this? */
+	hpd = get_hpd_gpio(&enc110->base);
+
+	if (!hpd) {
+		BREAK_TO_DEBUGGER();
+		return;
+	}
+
+	dal_gpio_open(hpd, GPIO_MODE_INTERRUPT);
+
+	/* wait until timeout or panel detected */
+
+	do {
+		uint32_t detected = 0;
+
+		dal_gpio_get_value(hpd, &detected);
+
+		if (!(detected ^ power_up)) {
+			edp_hpd_high = true;
+			break;
+		}
+
+		msleep(HPD_CHECK_INTERVAL);
+
+		time_elapsed += HPD_CHECK_INTERVAL;
+	} while (time_elapsed < timeout);
+
+	dal_gpio_close(hpd);
+
+	dal_gpio_destroy_irq(&hpd);
+
+	if (false == edp_hpd_high) {
+		dm_logger_write(ctx->logger, LOG_ERROR,
+				"%s: wait timed out!\n", __func__);
+	}
+}
+
+/*
+ * @brief
+ * eDP only. Control the power of the eDP panel.
+ */
+void dce110_link_encoder_edp_power_control(
+	struct link_encoder *enc,
+	bool power_up)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	struct bp_transmitter_control cntl = { 0 };
+	enum bp_result bp_result;
+
+	if (dal_graphics_object_id_get_connector_id(enc110->base.connector) !=
+		CONNECTOR_ID_EDP) {
+		BREAK_TO_DEBUGGER();
+		return;
+	}
+
+	if ((power_up && !is_panel_powered_on(enc110)) ||
+		(!power_up && is_panel_powered_on(enc110))) {
+
+		/* Send VBIOS command to prompt eDP panel power */
+
+		dm_logger_write(ctx->logger, LOG_HW_RESUME_S3,
+				"%s: Panel Power action: %s\n",
+				__func__, (power_up ? "On":"Off"));
+
+		cntl.action = power_up ?
+			TRANSMITTER_CONTROL_POWER_ON :
+			TRANSMITTER_CONTROL_POWER_OFF;
+		cntl.transmitter = enc110->base.transmitter;
+		cntl.connector_obj_id = enc110->base.connector;
+		cntl.coherent = false;
+		cntl.lanes_number = LANE_COUNT_FOUR;
+		cntl.hpd_sel = enc110->base.hpd_source;
+
+		bp_result = link_transmitter_control(enc110, &cntl);
+
+		if (BP_RESULT_OK != bp_result) {
+
+			dm_logger_write(ctx->logger, LOG_ERROR,
+					"%s: Panel Power bp_result: %d\n",
+					__func__, bp_result);
+		}
+	} else {
+		dm_logger_write(ctx->logger, LOG_HW_RESUME_S3,
+				"%s: Skipping Panel Power action: %s\n",
+				__func__, (power_up ? "On":"Off"));
+	}
+
+	link_encoder_edp_wait_for_hpd_ready(enc110, true);
+}
+
+static void aux_initialize(
+	struct dce110_link_encoder *enc110)
+{
+	struct dc_context *ctx = enc110->base.ctx;
+	enum hpd_source_id hpd_source = enc110->base.hpd_source;
+	uint32_t addr = AUX_REG(AUX_CONTROL);
+	uint32_t value = dm_read_reg(ctx, addr);
+
+	set_reg_field_value(value, hpd_source, AUX_CONTROL, AUX_HPD_SEL);
+	set_reg_field_value(value, 0, AUX_CONTROL, AUX_LS_READ_EN);
+	dm_write_reg(ctx, addr, value);
+
+	addr = AUX_REG(AUX_DPHY_RX_CONTROL0);
+	value = dm_read_reg(ctx, addr);
+
+	/* 1/4 window (the maximum allowed) */
+	set_reg_field_value(value, 1,
+			AUX_DPHY_RX_CONTROL0, AUX_RX_RECEIVE_WINDOW);
+	dm_write_reg(ctx, addr, value);
+
+}
+
+/*todo: cloned in stream enc, fix*/
+static bool is_panel_backlight_on(struct dce110_link_encoder *enc110)
+{
+	uint32_t value;
+
+	REG_GET(LVTMA_PWRSEQ_CNTL, LVTMA_BLON, &value);
+
+	return value;
+}
+
+/*todo: cloned in stream enc, fix*/
+/*
+ * @brief
+ * eDP only. Control the backlight of the eDP panel
+ */
+void dce110_link_encoder_edp_backlight_control(
+	struct link_encoder *enc,
+	bool enable)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	struct bp_transmitter_control cntl = { 0 };
+
+	if (dal_graphics_object_id_get_connector_id(enc110->base.connector)
+		!= CONNECTOR_ID_EDP) {
+		BREAK_TO_DEBUGGER();
+		return;
+	}
+
+	if (enable && is_panel_backlight_on(enc110)) {
+		dm_logger_write(ctx->logger, LOG_HW_RESUME_S3,
+				"%s: panel already powered up. Do nothing.\n",
+				__func__);
+		return;
+	}
+
+	if (!enable && !is_panel_powered_on(enc110)) {
+		dm_logger_write(ctx->logger, LOG_HW_RESUME_S3,
+				"%s: panel already powered down. Do nothing.\n",
+				__func__);
+		return;
+	}
+
+	/* Send VBIOS command to control eDP panel backlight */
+
+	dm_logger_write(ctx->logger, LOG_HW_RESUME_S3,
+			"%s: backlight action: %s\n",
+			__func__, (enable ? "On":"Off"));
+
+	cntl.action = enable ?
+		TRANSMITTER_CONTROL_BACKLIGHT_ON :
+		TRANSMITTER_CONTROL_BACKLIGHT_OFF;
+	/*cntl.engine_id = ctx->engine;*/
+	cntl.transmitter = enc110->base.transmitter;
+	cntl.connector_obj_id = enc110->base.connector;
+	/*todo: unhardcode*/
+	cntl.lanes_number = LANE_COUNT_FOUR;
+	cntl.hpd_sel = enc110->base.hpd_source;
+
+	/* For eDP, the following delays might need to be considered
+	 * after link training completed:
+	 * idle period - min. accounts for required BS-Idle pattern,
+	 * max. allows for source frame synchronization);
+	 * 50 msec max. delay from valid video data from source
+	 * to video on dislpay or backlight enable.
+	 *
+	 * Disable the delay for now.
+	 * Enable it in the future if necessary.
+	 */
+	/* dc_service_sleep_in_milliseconds(50); */
+	link_transmitter_control(enc110, &cntl);
+}
+
+static bool is_dig_enabled(const struct dce110_link_encoder *enc110)
+{
+	uint32_t value;
+
+	REG_GET(DIG_BE_EN_CNTL, DIG_ENABLE, &value);
+	return value;
+}
+
+static void link_encoder_disable(struct dce110_link_encoder *enc110)
+{
+	/* reset training pattern */
+	REG_SET(DP_DPHY_TRAINING_PATTERN_SEL, 0,
+			DPHY_TRAINING_PATTERN_SEL, 0);
+
+	/* reset training complete */
+	REG_UPDATE(DP_LINK_CNTL, DP_LINK_TRAINING_COMPLETE, 0);
+
+	/* reset panel mode */
+	ASSERT(REG(DP_DPHY_INTERNAL_CTRL));
+	REG_WRITE(DP_DPHY_INTERNAL_CTRL, 0);
+}
+
+static void hpd_initialize(
+	struct dce110_link_encoder *enc110)
+{
+	/* Associate HPD with DIG_BE */
+	enum hpd_source_id hpd_source = enc110->base.hpd_source;
+
+	REG_UPDATE(DIG_BE_CNTL, DIG_HPD_SELECT, hpd_source);
+}
+
+bool dce110_link_encoder_validate_dvi_output(
+	const struct dce110_link_encoder *enc110,
+	enum signal_type connector_signal,
+	enum signal_type signal,
+	const struct dc_crtc_timing *crtc_timing)
+{
+	uint32_t max_pixel_clock = TMDS_MAX_PIXEL_CLOCK;
+
+	if (enc110->base.features.max_pixel_clock < TMDS_MAX_PIXEL_CLOCK)
+		max_pixel_clock = enc110->base.features.max_pixel_clock;
+
+	if (signal == SIGNAL_TYPE_DVI_DUAL_LINK)
+		max_pixel_clock <<= 1;
+
+	/* This handles the case of HDMI downgrade to DVI we don't want to
+	 * we don't want to cap the pixel clock if the DDI is not DVI.
+	 */
+	if (connector_signal != SIGNAL_TYPE_DVI_DUAL_LINK &&
+			connector_signal != SIGNAL_TYPE_DVI_SINGLE_LINK)
+		max_pixel_clock = enc110->base.features.max_pixel_clock;
+
+	/* DVI only support RGB pixel encoding */
+	if (crtc_timing->pixel_encoding != PIXEL_ENCODING_RGB)
+		return false;
+
+	if (crtc_timing->pix_clk_khz < TMDS_MIN_PIXEL_CLOCK)
+		return false;
+
+	if (crtc_timing->pix_clk_khz > max_pixel_clock)
+		return false;
+
+	/* DVI supports 6/8bpp single-link and 10/16bpp dual-link */
+	switch (crtc_timing->display_color_depth) {
+	case COLOR_DEPTH_666:
+	case COLOR_DEPTH_888:
+	break;
+	case COLOR_DEPTH_101010:
+	case COLOR_DEPTH_161616:
+		if (signal != SIGNAL_TYPE_DVI_DUAL_LINK)
+			return false;
+	break;
+	default:
+		return false;
+	}
+
+	return true;
+}
+
+static bool dce110_link_encoder_validate_hdmi_output(
+	const struct dce110_link_encoder *enc110,
+	const struct dc_crtc_timing *crtc_timing,
+	int adjusted_pix_clk_khz)
+{
+	enum dc_color_depth max_deep_color =
+			enc110->base.features.max_hdmi_deep_color;
+
+	if (max_deep_color > enc110->base.features.max_deep_color)
+		max_deep_color = enc110->base.features.max_deep_color;
+
+	if (max_deep_color < crtc_timing->display_color_depth)
+		return false;
+
+	if (adjusted_pix_clk_khz < TMDS_MIN_PIXEL_CLOCK)
+		return false;
+
+	if ((adjusted_pix_clk_khz == 0) ||
+		(adjusted_pix_clk_khz > enc110->base.features.max_hdmi_pixel_clock) ||
+		(adjusted_pix_clk_khz > enc110->base.features.max_pixel_clock))
+		return false;
+
+	/* DCE11 HW does not support 420 */
+	if (!enc110->base.features.ycbcr420_supported &&
+			crtc_timing->pixel_encoding == PIXEL_ENCODING_YCBCR420)
+		return false;
+
+	return true;
+}
+
+bool dce110_link_encoder_validate_rgb_output(
+	const struct dce110_link_encoder *enc110,
+	const struct dc_crtc_timing *crtc_timing)
+{
+	if (crtc_timing->pix_clk_khz > enc110->base.features.max_pixel_clock)
+		return false;
+
+	if (crtc_timing->pixel_encoding != PIXEL_ENCODING_RGB)
+		return false;
+
+	return true;
+}
+
+bool dce110_link_encoder_validate_dp_output(
+	const struct dce110_link_encoder *enc110,
+	const struct dc_crtc_timing *crtc_timing)
+{
+	/* default RGB only */
+	if (crtc_timing->pixel_encoding == PIXEL_ENCODING_RGB)
+		return true;
+
+	if (enc110->base.features.flags.bits.IS_YCBCR_CAPABLE)
+		return true;
+
+	/* for DCE 8.x or later DP Y-only feature,
+	 * we need ASIC cap + FeatureSupportDPYonly, not support 666 */
+	if (crtc_timing->flags.Y_ONLY &&
+		enc110->base.features.flags.bits.IS_YCBCR_CAPABLE &&
+		crtc_timing->display_color_depth != COLOR_DEPTH_666)
+		return true;
+
+	return false;
+}
+
+bool dce110_link_encoder_validate_wireless_output(
+	const struct dce110_link_encoder *enc110,
+	const struct dc_crtc_timing *crtc_timing)
+{
+	if (crtc_timing->pix_clk_khz > enc110->base.features.max_pixel_clock)
+		return false;
+
+	/* Wireless only supports YCbCr444 */
+	if (crtc_timing->pixel_encoding ==
+			PIXEL_ENCODING_YCBCR444)
+		return true;
+
+	return false;
+}
+
+bool dce110_link_encoder_construct(
+	struct dce110_link_encoder *enc110,
+	const struct encoder_init_data *init_data,
+	const struct dce110_link_enc_registers *link_regs,
+	const struct dce110_link_enc_aux_registers *aux_regs,
+	const struct dce110_link_enc_hpd_registers *hpd_regs)
+{
+	enc110->base.funcs = &dce110_lnk_enc_funcs;
+	enc110->base.ctx = init_data->ctx;
+	enc110->base.id = init_data->encoder;
+
+	enc110->base.hpd_source = init_data->hpd_source;
+	enc110->base.connector = init_data->connector;
+	enc110->base.input_signals = SIGNAL_TYPE_ALL;
+
+	enc110->base.preferred_engine = ENGINE_ID_UNKNOWN;
+
+	enc110->base.features.flags.raw = 0;
+
+	enc110->base.transmitter = init_data->transmitter;
+
+	enc110->base.features.flags.bits.IS_AUDIO_CAPABLE = true;
+
+	enc110->base.features.max_pixel_clock =
+			MAX_ENCODER_CLK;
+
+	enc110->base.features.max_deep_color = COLOR_DEPTH_121212;
+	enc110->base.features.max_hdmi_deep_color = COLOR_DEPTH_121212;
+
+	/* set the flag to indicate whether driver poll the I2C data pin
+	 * while doing the DP sink detect
+	 */
+
+/*	if (dal_adapter_service_is_feature_supported(as,
+		FEATURE_DP_SINK_DETECT_POLL_DATA_PIN))
+		enc110->base.features.flags.bits.
+			DP_SINK_DETECT_POLL_DATA_PIN = true;*/
+
+	enc110->base.output_signals =
+		SIGNAL_TYPE_DVI_SINGLE_LINK |
+		SIGNAL_TYPE_DVI_DUAL_LINK |
+		SIGNAL_TYPE_LVDS |
+		SIGNAL_TYPE_DISPLAY_PORT |
+		SIGNAL_TYPE_DISPLAY_PORT_MST |
+		SIGNAL_TYPE_EDP |
+		SIGNAL_TYPE_HDMI_TYPE_A;
+
+	/* For DCE 8.0 and 8.1, by design, UNIPHY is hardwired to DIG_BE.
+	 * SW always assign DIG_FE 1:1 mapped to DIG_FE for non-MST UNIPHY.
+	 * SW assign DIG_FE to non-MST UNIPHY first and MST last. So prefer
+	 * DIG is per UNIPHY and used by SST DP, eDP, HDMI, DVI and LVDS.
+	 * Prefer DIG assignment is decided by board design.
+	 * For DCE 8.0, there are only max 6 UNIPHYs, we assume board design
+	 * and VBIOS will filter out 7 UNIPHY for DCE 8.0.
+	 * By this, adding DIGG should not hurt DCE 8.0.
+	 * This will let DCE 8.1 share DCE 8.0 as much as possible
+	 */
+
+	enc110->link_regs = link_regs;
+	enc110->aux_regs = aux_regs;
+	enc110->hpd_regs = hpd_regs;
+
+	switch (enc110->base.transmitter) {
+	case TRANSMITTER_UNIPHY_A:
+		enc110->base.preferred_engine = ENGINE_ID_DIGA;
+	break;
+	case TRANSMITTER_UNIPHY_B:
+		enc110->base.preferred_engine = ENGINE_ID_DIGB;
+	break;
+	case TRANSMITTER_UNIPHY_C:
+		enc110->base.preferred_engine = ENGINE_ID_DIGC;
+	break;
+	case TRANSMITTER_UNIPHY_D:
+		enc110->base.preferred_engine = ENGINE_ID_DIGD;
+	break;
+	case TRANSMITTER_UNIPHY_E:
+		enc110->base.preferred_engine = ENGINE_ID_DIGE;
+	break;
+	case TRANSMITTER_UNIPHY_F:
+		enc110->base.preferred_engine = ENGINE_ID_DIGF;
+	break;
+	default:
+		ASSERT_CRITICAL(false);
+		enc110->base.preferred_engine = ENGINE_ID_UNKNOWN;
+	}
+
+	dm_logger_write(init_data->ctx->logger, LOG_I2C_AUX,
+			"Using channel: %s [%d]\n",
+			DECODE_CHANNEL_ID(init_data->channel),
+			init_data->channel);
+
+	/* Override features with DCE-specific values */
+	{
+	struct bp_encoder_cap_info bp_cap_info = {0};
+	const struct dc_vbios_funcs *bp_funcs = enc110->base.ctx->dc_bios->funcs;
+
+	if (BP_RESULT_OK == bp_funcs->get_encoder_cap_info(
+			enc110->base.ctx->dc_bios, enc110->base.id,
+			&bp_cap_info))
+		enc110->base.features.flags.bits.IS_HBR2_CAPABLE =
+				bp_cap_info.DP_HBR2_CAP;
+	}
+	/* test pattern 3 support */
+	enc110->base.features.flags.bits.IS_TPS3_CAPABLE = true;
+
+	enc110->base.features.flags.bits.IS_Y_ONLY_CAPABLE = false;
+	/*
+		dal_adapter_service_is_feature_supported(as,
+			FEATURE_SUPPORT_DP_Y_ONLY);
+*/
+	enc110->base.features.flags.bits.IS_YCBCR_CAPABLE = true;
+	/*
+		dal_adapter_service_is_feature_supported(as,
+			FEATURE_SUPPORT_DP_YUV);
+			*/
+	return true;
+}
+
+bool dce110_link_encoder_validate_output_with_stream(
+	struct link_encoder *enc,
+	struct pipe_ctx *pipe_ctx)
+{
+	struct core_stream *stream = pipe_ctx->stream;
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	bool is_valid;
+
+	switch (pipe_ctx->stream->signal) {
+	case SIGNAL_TYPE_DVI_SINGLE_LINK:
+	case SIGNAL_TYPE_DVI_DUAL_LINK:
+		is_valid = dce110_link_encoder_validate_dvi_output(
+			enc110,
+			stream->sink->link->public.connector_signal,
+			pipe_ctx->stream->signal,
+			&stream->public.timing);
+	break;
+	case SIGNAL_TYPE_HDMI_TYPE_A:
+		is_valid = dce110_link_encoder_validate_hdmi_output(
+				enc110,
+				&stream->public.timing,
+				stream->phy_pix_clk);
+	break;
+	case SIGNAL_TYPE_RGB:
+		is_valid = dce110_link_encoder_validate_rgb_output(
+			enc110, &stream->public.timing);
+	break;
+	case SIGNAL_TYPE_DISPLAY_PORT:
+	case SIGNAL_TYPE_DISPLAY_PORT_MST:
+	case SIGNAL_TYPE_EDP:
+		is_valid = dce110_link_encoder_validate_dp_output(
+			enc110, &stream->public.timing);
+	break;
+	case SIGNAL_TYPE_WIRELESS:
+		is_valid = dce110_link_encoder_validate_wireless_output(
+			enc110, &stream->public.timing);
+	break;
+	default:
+		is_valid = true;
+	break;
+	}
+
+	return is_valid;
+}
+
+void dce110_link_encoder_hw_init(
+	struct link_encoder *enc)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	struct bp_transmitter_control cntl = { 0 };
+	enum bp_result result;
+
+	cntl.action = TRANSMITTER_CONTROL_INIT;
+	cntl.engine_id = ENGINE_ID_UNKNOWN;
+	cntl.transmitter = enc110->base.transmitter;
+	cntl.connector_obj_id = enc110->base.connector;
+	cntl.lanes_number = LANE_COUNT_FOUR;
+	cntl.coherent = false;
+	cntl.hpd_sel = enc110->base.hpd_source;
+
+	result = link_transmitter_control(enc110, &cntl);
+
+	if (result != BP_RESULT_OK) {
+		dm_logger_write(ctx->logger, LOG_ERROR,
+			"%s: Failed to execute VBIOS command table!\n",
+			__func__);
+		BREAK_TO_DEBUGGER();
+		return;
+	}
+
+	if (enc110->base.connector.id == CONNECTOR_ID_LVDS) {
+		cntl.action = TRANSMITTER_CONTROL_BACKLIGHT_BRIGHTNESS;
+
+		result = link_transmitter_control(enc110, &cntl);
+
+		ASSERT(result == BP_RESULT_OK);
+
+	} else if (enc110->base.connector.id == CONNECTOR_ID_EDP) {
+		enc->funcs->power_control(&enc110->base, true);
+	}
+	aux_initialize(enc110);
+
+	/* reinitialize HPD.
+	 * hpd_initialize() will pass DIG_FE id to HW context.
+	 * All other routine within HW context will use fe_engine_offset
+	 * as DIG_FE id even caller pass DIG_FE id.
+	 * So this routine must be called first. */
+	hpd_initialize(enc110);
+}
+
+void dce110_link_encoder_destroy(struct link_encoder **enc)
+{
+	dm_free(TO_DCE110_LINK_ENC(*enc));
+	*enc = NULL;
+}
+
+void dce110_link_encoder_setup(
+	struct link_encoder *enc,
+	enum signal_type signal)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+
+	switch (signal) {
+	case SIGNAL_TYPE_EDP:
+	case SIGNAL_TYPE_DISPLAY_PORT:
+		/* DP SST */
+		REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 0);
+		break;
+	case SIGNAL_TYPE_LVDS:
+		/* LVDS */
+		REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 1);
+		break;
+	case SIGNAL_TYPE_DVI_SINGLE_LINK:
+	case SIGNAL_TYPE_DVI_DUAL_LINK:
+		/* TMDS-DVI */
+		REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 2);
+		break;
+	case SIGNAL_TYPE_HDMI_TYPE_A:
+		/* TMDS-HDMI */
+		REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 3);
+		break;
+	case SIGNAL_TYPE_DISPLAY_PORT_MST:
+		/* DP MST */
+		REG_UPDATE(DIG_BE_CNTL, DIG_MODE, 5);
+		break;
+	default:
+		ASSERT_CRITICAL(false);
+		/* invalid mode ! */
+		break;
+	}
+
+}
+
+/* TODO: still need depth or just pass in adjusted pixel clock? */
+void dce110_link_encoder_enable_tmds_output(
+	struct link_encoder *enc,
+	enum clock_source_id clock_source,
+	enum dc_color_depth color_depth,
+	bool hdmi,
+	bool dual_link,
+	uint32_t pixel_clock)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	struct bp_transmitter_control cntl = { 0 };
+	enum bp_result result;
+
+	/* Enable the PHY */
+
+	cntl.action = TRANSMITTER_CONTROL_ENABLE;
+	cntl.engine_id = ENGINE_ID_UNKNOWN;
+	cntl.transmitter = enc110->base.transmitter;
+	cntl.pll_id = clock_source;
+	if (hdmi) {
+		cntl.signal = SIGNAL_TYPE_HDMI_TYPE_A;
+		cntl.lanes_number = 4;
+	} else if (dual_link) {
+		cntl.signal = SIGNAL_TYPE_DVI_DUAL_LINK;
+		cntl.lanes_number = 8;
+	} else {
+		cntl.signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
+		cntl.lanes_number = 4;
+	}
+	cntl.hpd_sel = enc110->base.hpd_source;
+
+	cntl.pixel_clock = pixel_clock;
+	cntl.color_depth = color_depth;
+
+	result = link_transmitter_control(enc110, &cntl);
+
+	if (result != BP_RESULT_OK) {
+		dm_logger_write(ctx->logger, LOG_ERROR,
+			"%s: Failed to execute VBIOS command table!\n",
+			__func__);
+		BREAK_TO_DEBUGGER();
+	}
+}
+
+/* enables DP PHY output */
+void dce110_link_encoder_enable_dp_output(
+	struct link_encoder *enc,
+	const struct dc_link_settings *link_settings,
+	enum clock_source_id clock_source)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	struct bp_transmitter_control cntl = { 0 };
+	enum bp_result result;
+
+	/* Enable the PHY */
+
+	/* number_of_lanes is used for pixel clock adjust,
+	 * but it's not passed to asic_control.
+	 * We need to set number of lanes manually.
+	 */
+	configure_encoder(enc110, link_settings);
+
+	cntl.action = TRANSMITTER_CONTROL_ENABLE;
+	cntl.engine_id = ENGINE_ID_UNKNOWN;
+	cntl.transmitter = enc110->base.transmitter;
+	cntl.pll_id = clock_source;
+	cntl.signal = SIGNAL_TYPE_DISPLAY_PORT;
+	cntl.lanes_number = link_settings->lane_count;
+	cntl.hpd_sel = enc110->base.hpd_source;
+	cntl.pixel_clock = link_settings->link_rate
+						* LINK_RATE_REF_FREQ_IN_KHZ;
+	/* TODO: check if undefined works */
+	cntl.color_depth = COLOR_DEPTH_UNDEFINED;
+
+	result = link_transmitter_control(enc110, &cntl);
+
+	if (result != BP_RESULT_OK) {
+		dm_logger_write(ctx->logger, LOG_ERROR,
+			"%s: Failed to execute VBIOS command table!\n",
+			__func__);
+		BREAK_TO_DEBUGGER();
+	}
+}
+
+/* enables DP PHY output in MST mode */
+void dce110_link_encoder_enable_dp_mst_output(
+	struct link_encoder *enc,
+	const struct dc_link_settings *link_settings,
+	enum clock_source_id clock_source)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	struct bp_transmitter_control cntl = { 0 };
+	enum bp_result result;
+
+	/* Enable the PHY */
+
+	/* number_of_lanes is used for pixel clock adjust,
+	 * but it's not passed to asic_control.
+	 * We need to set number of lanes manually.
+	 */
+	configure_encoder(enc110, link_settings);
+
+	cntl.action = TRANSMITTER_CONTROL_ENABLE;
+	cntl.engine_id = ENGINE_ID_UNKNOWN;
+	cntl.transmitter = enc110->base.transmitter;
+	cntl.pll_id = clock_source;
+	cntl.signal = SIGNAL_TYPE_DISPLAY_PORT_MST;
+	cntl.lanes_number = link_settings->lane_count;
+	cntl.hpd_sel = enc110->base.hpd_source;
+	cntl.pixel_clock = link_settings->link_rate
+						* LINK_RATE_REF_FREQ_IN_KHZ;
+	/* TODO: check if undefined works */
+	cntl.color_depth = COLOR_DEPTH_UNDEFINED;
+
+	result = link_transmitter_control(enc110, &cntl);
+
+	if (result != BP_RESULT_OK) {
+		dm_logger_write(ctx->logger, LOG_ERROR,
+			"%s: Failed to execute VBIOS command table!\n",
+			__func__);
+		BREAK_TO_DEBUGGER();
+	}
+}
+/*
+ * @brief
+ * Disable transmitter and its encoder
+ */
+void dce110_link_encoder_disable_output(
+	struct link_encoder *enc,
+	enum signal_type signal)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	struct bp_transmitter_control cntl = { 0 };
+	enum bp_result result;
+
+	if (!is_dig_enabled(enc110)) {
+		/* OF_SKIP_POWER_DOWN_INACTIVE_ENCODER */
+		return;
+	}
+	/* Power-down RX and disable GPU PHY should be paired.
+	 * Disabling PHY without powering down RX may cause
+	 * symbol lock loss, on which we will get DP Sink interrupt. */
+
+	/* There is a case for the DP active dongles
+	 * where we want to disable the PHY but keep RX powered,
+	 * for those we need to ignore DP Sink interrupt
+	 * by checking lane count that has been set
+	 * on the last do_enable_output(). */
+
+	/* disable transmitter */
+	cntl.action = TRANSMITTER_CONTROL_DISABLE;
+	cntl.transmitter = enc110->base.transmitter;
+	cntl.hpd_sel = enc110->base.hpd_source;
+	cntl.signal = signal;
+	cntl.connector_obj_id = enc110->base.connector;
+
+	result = link_transmitter_control(enc110, &cntl);
+
+	if (result != BP_RESULT_OK) {
+		dm_logger_write(ctx->logger, LOG_ERROR,
+			"%s: Failed to execute VBIOS command table!\n",
+			__func__);
+		BREAK_TO_DEBUGGER();
+		return;
+	}
+
+	/* disable encoder */
+	if (dc_is_dp_signal(signal))
+		link_encoder_disable(enc110);
+
+	if (enc110->base.connector.id == CONNECTOR_ID_EDP) {
+		/* power down eDP panel */
+		/* TODO: Power control cause regression, we should implement
+		 * it properly, for now just comment it.
+		 *
+		 * link_encoder_edp_wait_for_hpd_ready(
+			link_enc,
+			link_enc->connector,
+			false);
+
+		 * link_encoder_edp_power_control(
+				link_enc, false); */
+	}
+}
+
+void dce110_link_encoder_dp_set_lane_settings(
+	struct link_encoder *enc,
+	const struct link_training_settings *link_settings)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	union dpcd_training_lane_set training_lane_set = { { 0 } };
+	int32_t lane = 0;
+	struct bp_transmitter_control cntl = { 0 };
+
+	if (!link_settings) {
+		BREAK_TO_DEBUGGER();
+		return;
+	}
+
+	cntl.action = TRANSMITTER_CONTROL_SET_VOLTAGE_AND_PREEMPASIS;
+	cntl.transmitter = enc110->base.transmitter;
+	cntl.connector_obj_id = enc110->base.connector;
+	cntl.lanes_number = link_settings->link_settings.lane_count;
+	cntl.hpd_sel = enc110->base.hpd_source;
+	cntl.pixel_clock = link_settings->link_settings.link_rate *
+						LINK_RATE_REF_FREQ_IN_KHZ;
+
+	for (lane = 0; lane < link_settings->link_settings.lane_count; ++lane) {
+		/* translate lane settings */
+
+		training_lane_set.bits.VOLTAGE_SWING_SET =
+			link_settings->lane_settings[lane].VOLTAGE_SWING;
+		training_lane_set.bits.PRE_EMPHASIS_SET =
+			link_settings->lane_settings[lane].PRE_EMPHASIS;
+
+		/* post cursor 2 setting only applies to HBR2 link rate */
+		if (link_settings->link_settings.link_rate == LINK_RATE_HIGH2) {
+			/* this is passed to VBIOS
+			 * to program post cursor 2 level */
+
+			training_lane_set.bits.POST_CURSOR2_SET =
+				link_settings->lane_settings[lane].POST_CURSOR2;
+		}
+
+		cntl.lane_select = lane;
+		cntl.lane_settings = training_lane_set.raw;
+
+		/* call VBIOS table to set voltage swing and pre-emphasis */
+		link_transmitter_control(enc110, &cntl);
+	}
+}
+
+/* set DP PHY test and training patterns */
+void dce110_link_encoder_dp_set_phy_pattern(
+	struct link_encoder *enc,
+	const struct encoder_set_dp_phy_pattern_param *param)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+
+	switch (param->dp_phy_pattern) {
+	case DP_TEST_PATTERN_TRAINING_PATTERN1:
+		dce110_link_encoder_set_dp_phy_pattern_training_pattern(enc, 0);
+		break;
+	case DP_TEST_PATTERN_TRAINING_PATTERN2:
+		dce110_link_encoder_set_dp_phy_pattern_training_pattern(enc, 1);
+		break;
+	case DP_TEST_PATTERN_TRAINING_PATTERN3:
+		dce110_link_encoder_set_dp_phy_pattern_training_pattern(enc, 2);
+		break;
+	case DP_TEST_PATTERN_D102:
+		set_dp_phy_pattern_d102(enc110);
+		break;
+	case DP_TEST_PATTERN_SYMBOL_ERROR:
+		set_dp_phy_pattern_symbol_error(enc110);
+		break;
+	case DP_TEST_PATTERN_PRBS7:
+		set_dp_phy_pattern_prbs7(enc110);
+		break;
+	case DP_TEST_PATTERN_80BIT_CUSTOM:
+		set_dp_phy_pattern_80bit_custom(
+			enc110, param->custom_pattern);
+		break;
+	case DP_TEST_PATTERN_HBR2_COMPLIANCE_EYE:
+		set_dp_phy_pattern_hbr2_compliance(enc110);
+		break;
+	case DP_TEST_PATTERN_VIDEO_MODE: {
+		set_dp_phy_pattern_passthrough_mode(
+			enc110, param->dp_panel_mode);
+		break;
+	}
+
+	default:
+		/* invalid phy pattern */
+		ASSERT_CRITICAL(false);
+		break;
+	}
+}
+
+static void fill_stream_allocation_row_info(
+	const struct link_mst_stream_allocation *stream_allocation,
+	uint32_t *src,
+	uint32_t *slots)
+{
+	const struct stream_encoder *stream_enc = stream_allocation->stream_enc;
+
+	if (stream_enc) {
+		*src = stream_enc->id;
+		*slots = stream_allocation->slot_count;
+	} else {
+		*src = 0;
+		*slots = 0;
+	}
+}
+
+/* programs DP MST VC payload allocation */
+void dce110_link_encoder_update_mst_stream_allocation_table(
+	struct link_encoder *enc,
+	const struct link_mst_stream_allocation_table *table)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	uint32_t value0 = 0;
+	uint32_t value1 = 0;
+	uint32_t value2 = 0;
+	uint32_t slots = 0;
+	uint32_t src = 0;
+	uint32_t retries = 0;
+
+	/* For CZ, there are only 3 pipes. So Virtual channel is up 3.*/
+
+	/* --- Set MSE Stream Attribute -
+	 * Setup VC Payload Table on Tx Side,
+	 * Issue allocation change trigger
+	 * to commit payload on both tx and rx side */
+
+	/* we should clean-up table each time */
+
+	if (table->stream_count >= 1) {
+		fill_stream_allocation_row_info(
+			&table->stream_allocations[0],
+			&src,
+			&slots);
+	} else {
+		src = 0;
+		slots = 0;
+	}
+
+	REG_UPDATE_2(DP_MSE_SAT0,
+			DP_MSE_SAT_SRC0, src,
+			DP_MSE_SAT_SLOT_COUNT0, slots);
+
+	if (table->stream_count >= 2) {
+		fill_stream_allocation_row_info(
+			&table->stream_allocations[1],
+			&src,
+			&slots);
+	} else {
+		src = 0;
+		slots = 0;
+	}
+
+	REG_UPDATE_2(DP_MSE_SAT0,
+			DP_MSE_SAT_SRC1, src,
+			DP_MSE_SAT_SLOT_COUNT1, slots);
+
+	if (table->stream_count >= 3) {
+		fill_stream_allocation_row_info(
+			&table->stream_allocations[2],
+			&src,
+			&slots);
+	} else {
+		src = 0;
+		slots = 0;
+	}
+
+	REG_UPDATE_2(DP_MSE_SAT1,
+			DP_MSE_SAT_SRC2, src,
+			DP_MSE_SAT_SLOT_COUNT2, slots);
+
+	if (table->stream_count >= 4) {
+		fill_stream_allocation_row_info(
+			&table->stream_allocations[3],
+			&src,
+			&slots);
+	} else {
+		src = 0;
+		slots = 0;
+	}
+
+	REG_UPDATE_2(DP_MSE_SAT1,
+			DP_MSE_SAT_SRC3, src,
+			DP_MSE_SAT_SLOT_COUNT3, slots);
+
+	/* --- wait for transaction finish */
+
+	/* send allocation change trigger (ACT) ?
+	 * this step first sends the ACT,
+	 * then double buffers the SAT into the hardware
+	 * making the new allocation active on the DP MST mode link */
+
+
+	/* DP_MSE_SAT_UPDATE:
+	 * 0 - No Action
+	 * 1 - Update SAT with trigger
+	 * 2 - Update SAT without trigger */
+
+	REG_UPDATE(DP_MSE_SAT_UPDATE,
+			DP_MSE_SAT_UPDATE, 1);
+
+	/* wait for update to complete
+	 * (i.e. DP_MSE_SAT_UPDATE field is reset to 0)
+	 * then wait for the transmission
+	 * of at least 16 MTP headers on immediate local link.
+	 * i.e. DP_MSE_16_MTP_KEEPOUT field (read only) is reset to 0
+	 * a value of 1 indicates that DP MST mode
+	 * is in the 16 MTP keepout region after a VC has been added.
+	 * MST stream bandwidth (VC rate) can be configured
+	 * after this bit is cleared */
+
+	do {
+		udelay(10);
+
+		value0 = REG_READ(DP_MSE_SAT_UPDATE);
+
+		REG_GET(DP_MSE_SAT_UPDATE,
+				DP_MSE_SAT_UPDATE, &value1);
+
+		REG_GET(DP_MSE_SAT_UPDATE,
+				DP_MSE_16_MTP_KEEPOUT, &value2);
+
+		/* bit field DP_MSE_SAT_UPDATE is set to 1 already */
+		if (!value1 && !value2)
+			break;
+		++retries;
+	} while (retries < DP_MST_UPDATE_MAX_RETRY);
+}
+
+void dce110_link_encoder_set_lcd_backlight_level(
+	struct link_encoder *enc,
+	uint32_t level)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+
+	const uint32_t backlight_update_pending_max_retry = 1000;
+
+	uint32_t backlight_lock;
+
+	uint32_t i;
+	uint32_t backlight_24bit;
+	uint32_t backlight_17bit;
+	uint32_t backlight_16bit;
+	uint32_t masked_pwm_period;
+	uint8_t rounding_bit;
+	uint8_t bit_count;
+	uint64_t active_duty_cycle;
+	uint32_t pwm_period_bitcnt;
+
+	backlight_lock = REG_READ(BL_PWM_GRP1_REG_LOCK);
+
+	/*
+	 * 1. Convert 8-bit value to 17 bit U1.16 format
+	 * (1 integer, 16 fractional bits)
+	 */
+
+	/* 1.1 multiply 8 bit value by 0x10101 to get a 24 bit value,
+	 * effectively multiplying value by 256/255
+	 * eg. for a level of 0xEF, backlight_24bit = 0xEF * 0x10101 = 0xEFEFEF
+	 */
+	backlight_24bit = level * 0x10101;
+
+	/* 1.2 The upper 16 bits of the 24 bit value is the fraction, lower 8
+	 * used for rounding, take most significant bit of fraction for
+	 * rounding, e.g. for 0xEFEFEF, rounding bit is 1
+	 */
+	rounding_bit = (backlight_24bit >> 7) & 1;
+
+	/* 1.3 Add the upper 16 bits of the 24 bit value with the rounding bit
+	 * resulting in a 17 bit value e.g. 0xEFF0 = (0xEFEFEF >> 8) + 1
+	 */
+	backlight_17bit = (backlight_24bit >> 8) + rounding_bit;
+
+	/*
+	 * 2. Find  16 bit backlight active duty cycle, where 0 <= backlight
+	 * active duty cycle <= backlight period
+	 */
+
+	/* 2.1 Apply bitmask for backlight period value based on value of BITCNT
+	 */
+	{
+		REG_GET(BL_PWM_PERIOD_CNTL,
+			BL_PWM_PERIOD_BITCNT, &pwm_period_bitcnt);
+
+		if (pwm_period_bitcnt == 0)
+			bit_count = 16;
+		else
+			bit_count = pwm_period_bitcnt;
+	}
+
+	/* e.g. maskedPwmPeriod = 0x24 when bitCount is 6 */
+	masked_pwm_period =
+		REG_GET(BL_PWM_PERIOD_CNTL,
+				BL_PWM_PERIOD, &masked_pwm_period)
+		& ((1 << bit_count) - 1);
+
+	/* 2.2 Calculate integer active duty cycle required upper 16 bits
+	 * contain integer component, lower 16 bits contain fractional component
+	 * of active duty cycle e.g. 0x21BDC0 = 0xEFF0 * 0x24
+	 */
+	active_duty_cycle = backlight_17bit * masked_pwm_period;
+
+	/* 2.3 Calculate 16 bit active duty cycle from integer and fractional
+	 * components shift by bitCount then mask 16 bits and add rounding bit
+	 * from MSB of fraction e.g. 0x86F7 = ((0x21BDC0 >> 6) & 0xFFF) + 0
+	 */
+	backlight_16bit = active_duty_cycle >> bit_count;
+	backlight_16bit &= 0xFFFF;
+	backlight_16bit += (active_duty_cycle >> (bit_count - 1)) & 0x1;
+
+	REG_UPDATE(BL_PWM_CNTL,
+			BL_ACTIVE_INT_FRAC_CNT, backlight_16bit);
+
+	/*
+	 * 3. Program register with updated value
+	 */
+
+	/* 3.1 Lock group 2 backlight registers */
+
+	REG_UPDATE(BL_PWM_GRP1_REG_LOCK,
+			BL_PWM_GRP1_IGNORE_MASTER_LOCK_EN, 1);
+
+	REG_UPDATE(BL_PWM_GRP1_REG_LOCK,
+			BL_PWM_GRP1_REG_LOCK, 1);
+
+	/* 3.3 Unlock group 2 backlight registers */
+	REG_UPDATE(BL_PWM_GRP1_REG_LOCK,
+			BL_PWM_GRP1_REG_LOCK, 0);
+
+	/* 5.4.4 Wait for pending bit to be cleared */
+	for (i = 0; i < backlight_update_pending_max_retry; ++i) {
+		REG_GET(BL_PWM_GRP1_REG_LOCK,
+						BL_PWM_GRP1_REG_UPDATE_PENDING, &backlight_lock);
+		if (!backlight_lock)
+			break;
+
+		udelay(10);
+	}
+}
+
+void dce110_link_encoder_set_dmcu_backlight_level(
+	struct link_encoder *enc,
+	uint32_t level,
+	uint32_t frame_ramp,
+	uint32_t controller_id)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	unsigned int dmcu_max_retry_on_wait_reg_ready = 801;
+	unsigned int dmcu_wait_reg_ready_interval = 100;
+	unsigned int backlight_17bit = level * 0x10101;
+	unsigned char temp_uchar =
+			(unsigned char)(((backlight_17bit & 0x80) >> 7) & 1);
+	unsigned int regValue;
+	uint32_t rampingBoundary = 0xFFFF;
+	uint32_t s2;
+
+	backlight_17bit = (backlight_17bit >> 8) + temp_uchar;
+
+	/* set ramping boundary */
+	REG_WRITE(MASTER_COMM_DATA_REG1, rampingBoundary);
+
+	/* setDMCUParam_Pipe */
+	REG_UPDATE_2(MASTER_COMM_CMD_REG,
+			MASTER_COMM_CMD_REG_BYTE0, MCP_ABM_PIPE_SET,
+			MASTER_COMM_CMD_REG_BYTE1, controller_id);
+
+	/* notifyDMCUMsg */
+	REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1);
+
+	/* waitDMCUReadyForCmd */
+	do {
+		dm_delay_in_microseconds(ctx, dmcu_wait_reg_ready_interval);
+		regValue = REG_READ(MASTER_COMM_CNTL_REG);
+		dmcu_max_retry_on_wait_reg_ready--;
+	} while
+	/* expected value is 0, loop while not 0*/
+	((MASTER_COMM_CNTL_REG__MASTER_COMM_INTERRUPT_MASK & regValue) &&
+		dmcu_max_retry_on_wait_reg_ready > 0);
+
+	/* setDMCUParam_BL */
+	REG_UPDATE(BL1_PWM_USER_LEVEL, BL1_PWM_USER_LEVEL, backlight_17bit);
+
+	/* write ramp */
+	REG_WRITE(MASTER_COMM_DATA_REG1, frame_ramp);
+
+	/* setDMCUParam_Cmd */
+	REG_UPDATE(MASTER_COMM_CMD_REG, MASTER_COMM_CMD_REG_BYTE0, MCP_BL_SET);
+
+	/* notifyDMCUMsg */
+	REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1);
+
+	/* UpdateRequestedBacklightLevel */
+	s2 = REG_READ(BIOS_SCRATCH_2);
+
+	s2 &= ~ATOM_S2_CURRENT_BL_LEVEL_MASK;
+	level &= (ATOM_S2_CURRENT_BL_LEVEL_MASK >>
+				ATOM_S2_CURRENT_BL_LEVEL_SHIFT);
+	s2 |= (level << ATOM_S2_CURRENT_BL_LEVEL_SHIFT);
+
+	REG_WRITE(BIOS_SCRATCH_2, s2);
+}
+
+void dce110_link_encoder_init_dmcu_backlight_settings(
+	struct link_encoder *enc)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	uint32_t bl_pwm_cntl;
+	uint32_t pwmCntl;
+	uint32_t pwmCntl2;
+	uint32_t periodCntl;
+	uint32_t s2;
+	uint32_t value;
+
+	bl_pwm_cntl = REG_READ(BL_PWM_CNTL);
+
+	/* It must not be 0, so we have to restore them
+	 * Bios bug w/a - period resets to zero,
+	 * restoring to cache values which is always correct
+	 */
+	REG_GET(BL_PWM_CNTL,
+				BL_ACTIVE_INT_FRAC_CNT, &value);
+	if (value == 0 || bl_pwm_cntl == 1) {
+		if (stored_backlight_registers.vBL_PWM_CNTL != 0) {
+			pwmCntl = stored_backlight_registers.vBL_PWM_CNTL;
+			REG_WRITE(BL_PWM_CNTL, pwmCntl);
+
+			pwmCntl2 = stored_backlight_registers.vBL_PWM_CNTL2;
+			REG_WRITE(BL_PWM_CNTL2, pwmCntl2);
+
+			periodCntl =
+				stored_backlight_registers.vBL_PWM_PERIOD_CNTL;
+			REG_WRITE(BL_PWM_PERIOD_CNTL, periodCntl);
+
+			REG_UPDATE(LVTMA_PWRSEQ_REF_DIV,
+				BL_PWM_REF_DIV,
+				stored_backlight_registers.
+				vLVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV);
+		}
+	} else {
+		stored_backlight_registers.vBL_PWM_CNTL =
+				REG_READ(BL_PWM_CNTL);
+		stored_backlight_registers.vBL_PWM_CNTL2 =
+				REG_READ(BL_PWM_CNTL2);
+		stored_backlight_registers.vBL_PWM_PERIOD_CNTL =
+				REG_READ(BL_PWM_PERIOD_CNTL);
+
+		REG_GET(LVTMA_PWRSEQ_REF_DIV, BL_PWM_REF_DIV,
+				&stored_backlight_registers.
+				vLVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV);
+	}
+
+	/* Have driver take backlight control
+	 * TakeBacklightControl(true)
+	 */
+	s2 = REG_READ(BIOS_SCRATCH_2);
+	s2 |= ATOM_S2_VRI_BRIGHT_ENABLE;
+	REG_WRITE(BIOS_SCRATCH_2, s2);
+
+	/* Enable the backlight output */
+	REG_UPDATE(BL_PWM_CNTL, BL_PWM_EN, 1);
+
+}
+
+void dce110_link_encoder_set_dmcu_abm_level(
+	struct link_encoder *enc, uint32_t level)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+
+	unsigned int dmcu_max_retry_on_wait_reg_ready = 801;
+	unsigned int dmcu_wait_reg_ready_interval = 100;
+	unsigned int regValue;
+
+	/* waitDMCUReadyForCmd */
+	do {
+		dm_delay_in_microseconds(ctx, dmcu_wait_reg_ready_interval);
+		regValue = REG_READ(MASTER_COMM_CNTL_REG);
+		dmcu_max_retry_on_wait_reg_ready--;
+	} while
+	/* expected value is 0, loop while not 0*/
+	((MASTER_COMM_CNTL_REG__MASTER_COMM_INTERRUPT_MASK & regValue) &&
+		dmcu_max_retry_on_wait_reg_ready > 0);
+
+	/* setDMCUParam_ABMLevel */
+	REG_UPDATE_2(MASTER_COMM_CMD_REG,
+			MASTER_COMM_CMD_REG_BYTE0, MCP_ABM_LEVEL_SET,
+			MASTER_COMM_CMD_REG_BYTE2, level);
+
+	/* notifyDMCUMsg */
+	REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1);
+}
+
+static void get_dmcu_psr_state(struct link_encoder *enc, uint32_t *psr_state)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+
+	uint32_t count = 0;
+	uint32_t psrStateOffset = 0xf0;
+	uint32_t value;
+
+	/* Enable write access to IRAM */
+	REG_UPDATE(DMCU_RAM_ACCESS_CTRL, IRAM_HOST_ACCESS_EN, 1);
+
+	do {
+		dm_delay_in_microseconds(ctx, 2);
+		REG_GET(DCI_MEM_PWR_STATUS,
+					DMCU_IRAM_MEM_PWR_STATE, &value);
+	} while
+		(value != 0 && count++ < 10);
+
+	/* Write address to IRAM_RD_ADDR in DMCU_IRAM_RD_CTRL */
+	REG_WRITE(DMCU_IRAM_RD_CTRL, psrStateOffset);
+
+	/* Read data from IRAM_RD_DATA in DMCU_IRAM_RD_DATA*/
+	*psr_state = REG_READ(DMCU_IRAM_RD_DATA);
+
+	/* Disable write access to IRAM after finished using IRAM
+	 * in order to allow dynamic sleep state
+	 */
+	REG_UPDATE(DMCU_RAM_ACCESS_CTRL, IRAM_HOST_ACCESS_EN, 0);
+}
+
+void dce110_link_encoder_set_dmcu_psr_enable(struct link_encoder *enc,
+								bool enable)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+
+	unsigned int dmcu_max_retry_on_wait_reg_ready = 801;
+	unsigned int dmcu_wait_reg_ready_interval = 100;
+
+	unsigned int regValue;
+
+	unsigned int retryCount;
+	uint32_t psr_state = 0;
+
+	/* waitDMCUReadyForCmd */
+	do {
+		dm_delay_in_microseconds(ctx, dmcu_wait_reg_ready_interval);
+		regValue = REG_READ(MASTER_COMM_CNTL_REG);
+		dmcu_max_retry_on_wait_reg_ready--;
+	} while
+	/* expected value is 0, loop while not 0*/
+	((MASTER_COMM_CNTL_REG__MASTER_COMM_INTERRUPT_MASK & regValue) &&
+		dmcu_max_retry_on_wait_reg_ready > 0);
+
+	/* setDMCUParam_Cmd */
+	if (enable)
+		REG_UPDATE(MASTER_COMM_CMD_REG, MASTER_COMM_CMD_REG_BYTE0, PSR_ENABLE);
+	else
+		REG_UPDATE(MASTER_COMM_CMD_REG, MASTER_COMM_CMD_REG_BYTE0, PSR_EXIT);
+
+	/* notifyDMCUMsg */
+	REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1);
+
+	for (retryCount = 0; retryCount <= 100; retryCount++) {
+		get_dmcu_psr_state(enc, &psr_state);
+		if (enable) {
+			if (psr_state != 0)
+				break;
+		} else {
+			if (psr_state == 0)
+				break;
+		}
+		dm_delay_in_microseconds(ctx, 10);
+	}
+}
+
+void dce110_link_encoder_setup_dmcu_psr(struct link_encoder *enc,
+			struct psr_dmcu_context *psr_context)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+
+	unsigned int dmcu_max_retry_on_wait_reg_ready = 801;
+	unsigned int dmcu_wait_reg_ready_interval = 100;
+	unsigned int regValue;
+
+	union dce110_dmcu_psr_config_data_reg1 masterCmdData1;
+	union dce110_dmcu_psr_config_data_reg2 masterCmdData2;
+	union dce110_dmcu_psr_config_data_reg3 masterCmdData3;
+
+	if (psr_context->psrExitLinkTrainingRequired)
+		REG_UPDATE(DP_DPHY_FAST_TRAINING, DPHY_RX_FAST_TRAINING_CAPABLE, 1);
+	else {
+		REG_UPDATE(DP_DPHY_FAST_TRAINING, DPHY_RX_FAST_TRAINING_CAPABLE, 0);
+		/*In DCE 11, we are able to pre-program a Force SR register
+		 * to be able to trigger SR symbol after 5 idle patterns
+		 * transmitted. Upon PSR Exit, DMCU can trigger
+		 * DPHY_LOAD_BS_COUNT_START = 1. Upon writing 1 to
+		 * DPHY_LOAD_BS_COUNT_START and the internal counter
+		 * reaches DPHY_LOAD_BS_COUNT, the next BS symbol will be
+		 * replaced by SR symbol once.
+		 */
+
+		REG_UPDATE(DP_DPHY_BS_SR_SWAP_CNTL, DPHY_LOAD_BS_COUNT, 0x5);
+	}
+
+	/* Enable static screen interrupts for PSR supported display */
+	/* Disable the interrupt coming from other displays. */
+	REG_UPDATE_4(DMCU_INTERRUPT_TO_UC_EN_MASK,
+			STATIC_SCREEN1_INT_TO_UC_EN, 0,
+			STATIC_SCREEN2_INT_TO_UC_EN, 0,
+			STATIC_SCREEN3_INT_TO_UC_EN, 0,
+			STATIC_SCREEN4_INT_TO_UC_EN, 0);
+
+	switch (psr_context->controllerId) {
+	/* Driver uses case 1 for unconfigured */
+	case 1:
+		psr_crtc_offset = mmCRTC0_CRTC_STATIC_SCREEN_CONTROL -
+				mmCRTC0_CRTC_STATIC_SCREEN_CONTROL;
+
+		REG_UPDATE(DMCU_INTERRUPT_TO_UC_EN_MASK,
+				STATIC_SCREEN1_INT_TO_UC_EN, 1);
+		break;
+	case 2:
+		psr_crtc_offset = mmCRTC1_CRTC_STATIC_SCREEN_CONTROL -
+				mmCRTC0_CRTC_STATIC_SCREEN_CONTROL;
+
+		REG_UPDATE(DMCU_INTERRUPT_TO_UC_EN_MASK,
+				STATIC_SCREEN2_INT_TO_UC_EN, 1);
+		break;
+	case 3:
+		psr_crtc_offset = mmCRTC2_CRTC_STATIC_SCREEN_CONTROL -
+				mmCRTC0_CRTC_STATIC_SCREEN_CONTROL;
+
+		REG_UPDATE(DMCU_INTERRUPT_TO_UC_EN_MASK,
+				STATIC_SCREEN3_INT_TO_UC_EN, 1);
+		break;
+	case 4:
+		psr_crtc_offset = mmCRTC3_CRTC_STATIC_SCREEN_CONTROL -
+				mmCRTC0_CRTC_STATIC_SCREEN_CONTROL;
+
+		REG_UPDATE(DMCU_INTERRUPT_TO_UC_EN_MASK,
+				STATIC_SCREEN4_INT_TO_UC_EN, 1);
+		break;
+	case 5:
+		psr_crtc_offset = mmCRTC4_CRTC_STATIC_SCREEN_CONTROL -
+				mmCRTC0_CRTC_STATIC_SCREEN_CONTROL;
+		/* CZ/NL only has 4 CRTC!!
+		 * really valid.
+		 * There is no interrupt enable mask for these instances.
+		 */
+		break;
+	case 6:
+		psr_crtc_offset = mmCRTC5_CRTC_STATIC_SCREEN_CONTROL -
+				mmCRTC0_CRTC_STATIC_SCREEN_CONTROL;
+		/* CZ/NL only has 4 CRTC!!
+		 * These are here because they are defined in HW regspec,
+		 * but not really valid. There is no interrupt enable mask
+		 * for these instances.
+		 */
+		break;
+	default:
+		psr_crtc_offset = mmCRTC0_CRTC_STATIC_SCREEN_CONTROL -
+				mmCRTC0_CRTC_STATIC_SCREEN_CONTROL;
+
+		REG_UPDATE(DMCU_INTERRUPT_TO_UC_EN_MASK,
+				STATIC_SCREEN1_INT_TO_UC_EN, 1);
+		break;
+	}
+
+	REG_UPDATE_2(DP_SEC_CNTL1,
+		DP_SEC_GSP0_LINE_NUM, psr_context->sdpTransmitLineNumDeadline,
+		DP_SEC_GSP0_PRIORITY, 1);
+
+	if (psr_context->psr_level.bits.SKIP_SMU_NOTIFICATION) {
+		REG_UPDATE(SMU_INTERRUPT_CONTROL, DC_SMU_INT_ENABLE, 1);
+	}
+
+	/* waitDMCUReadyForCmd */
+	do {
+		dm_delay_in_microseconds(ctx, dmcu_wait_reg_ready_interval);
+		regValue = REG_READ(MASTER_COMM_CNTL_REG);
+		dmcu_max_retry_on_wait_reg_ready--;
+	} while
+	/* expected value is 0, loop while not 0*/
+	((MASTER_COMM_CNTL_REG__MASTER_COMM_INTERRUPT_MASK & regValue) &&
+		dmcu_max_retry_on_wait_reg_ready > 0);
+
+	/* setDMCUParam_PSRHostConfigData */
+	masterCmdData1.u32All = 0;
+	masterCmdData1.bits.timehyst_frames = psr_context->timehyst_frames;
+	masterCmdData1.bits.hyst_lines = psr_context->hyst_lines;
+	masterCmdData1.bits.rfb_update_auto_en =
+			psr_context->rfb_update_auto_en;
+	masterCmdData1.bits.dp_port_num = psr_context->transmitterId;
+	masterCmdData1.bits.dcp_sel = psr_context->controllerId;
+	masterCmdData1.bits.phy_type  = psr_context->phyType;
+	masterCmdData1.bits.frame_cap_ind =
+			psr_context->psrFrameCaptureIndicationReq;
+	masterCmdData1.bits.aux_chan = psr_context->channel;
+	masterCmdData1.bits.aux_repeat = psr_context->aux_repeats;
+	dm_write_reg(ctx, REG(MASTER_COMM_DATA_REG1),
+					masterCmdData1.u32All);
+
+	masterCmdData2.u32All = 0;
+	masterCmdData2.bits.dig_fe = psr_context->engineId;
+	masterCmdData2.bits.dig_be = psr_context->transmitterId;
+	masterCmdData2.bits.skip_wait_for_pll_lock =
+			psr_context->skipPsrWaitForPllLock;
+	masterCmdData2.bits.frame_delay = psr_context->frame_delay;
+	masterCmdData2.bits.smu_phy_id = psr_context->smuPhyId;
+	masterCmdData2.bits.num_of_controllers =
+			psr_context->numberOfControllers;
+	dm_write_reg(ctx, REG(MASTER_COMM_DATA_REG2),
+			masterCmdData2.u32All);
+
+	masterCmdData3.u32All = 0;
+	masterCmdData3.bits.psr_level = psr_context->psr_level.u32all;
+	dm_write_reg(ctx, REG(MASTER_COMM_DATA_REG3),
+			masterCmdData3.u32All);
+
+	/* setDMCUParam_Cmd */
+	REG_UPDATE(MASTER_COMM_CMD_REG,
+			MASTER_COMM_CMD_REG_BYTE0, PSR_SET);
+
+	/* notifyDMCUMsg */
+	REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1);
+}
+
+void dce110_link_encoder_connect_dig_be_to_fe(
+	struct link_encoder *enc,
+	enum engine_id engine,
+	bool connect)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	uint32_t field;
+
+	if (engine != ENGINE_ID_UNKNOWN) {
+
+		REG_GET(DIG_BE_CNTL, DIG_FE_SOURCE_SELECT, &field);
+
+		if (connect)
+			field |= get_frontend_source(engine);
+		else
+			field &= ~get_frontend_source(engine);
+
+		REG_UPDATE(DIG_BE_CNTL, DIG_FE_SOURCE_SELECT, field);
+	}
+}
+
+void dce110_link_encoder_enable_hpd(struct link_encoder *enc)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	uint32_t addr = HPD_REG(DC_HPD_CONTROL);
+	uint32_t hpd_enable = 0;
+	uint32_t value = dm_read_reg(ctx, addr);
+
+	get_reg_field_value(hpd_enable, DC_HPD_CONTROL, DC_HPD_EN);
+
+	if (hpd_enable == 0)
+		set_reg_field_value(value, 1, DC_HPD_CONTROL, DC_HPD_EN);
+}
+
+void dce110_link_encoder_disable_hpd(struct link_encoder *enc)
+{
+	struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
+	struct dc_context *ctx = enc110->base.ctx;
+	uint32_t addr = HPD_REG(DC_HPD_CONTROL);
+	uint32_t value = dm_read_reg(ctx, addr);
+
+	set_reg_field_value(value, 0, DC_HPD_CONTROL, DC_HPD_EN);
+}