diff --git a/drivers/video/exynos_dp.c b/drivers/video/exynos_dp.c
new file mode 100644
index 0000000..53e4101
--- /dev/null
+++ b/drivers/video/exynos_dp.c
@@ -0,0 +1,925 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * Author: Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <malloc.h>
+#include <linux/err.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/dp_info.h>
+#include <asm/arch/dp.h>
+
+#include "exynos_dp_lowlevel.h"
+
+static struct exynos_dp_platform_data *dp_pd;
+
+static void exynos_dp_disp_info(struct edp_disp_info *disp_info)
+{
+	disp_info->h_total = disp_info->h_res + disp_info->h_sync_width +
+		disp_info->h_back_porch + disp_info->h_front_porch;
+	disp_info->v_total = disp_info->v_res + disp_info->v_sync_width +
+		disp_info->v_back_porch + disp_info->v_front_porch;
+
+	return;
+}
+
+static int exynos_dp_init_dp(void)
+{
+	int ret;
+	exynos_dp_reset();
+
+	/* SW defined function Normal operation */
+	exynos_dp_enable_sw_func(DP_ENABLE);
+
+	ret = exynos_dp_init_analog_func();
+	if (ret != EXYNOS_DP_SUCCESS)
+		return ret;
+
+	exynos_dp_init_hpd();
+	exynos_dp_init_aux();
+
+	return ret;
+}
+
+static unsigned char exynos_dp_calc_edid_check_sum(unsigned char *edid_data)
+{
+	int i;
+	unsigned char sum = 0;
+
+	for (i = 0; i < EDID_BLOCK_LENGTH; i++)
+		sum = sum + edid_data[i];
+
+	return sum;
+}
+
+static unsigned int exynos_dp_read_edid(void)
+{
+	unsigned char edid[EDID_BLOCK_LENGTH * 2];
+	unsigned int extend_block = 0;
+	unsigned char sum;
+	unsigned char test_vector;
+	int retval;
+
+	/*
+	 * EDID device address is 0x50.
+	 * However, if necessary, you must have set upper address
+	 * into E-EDID in I2C device, 0x30.
+	 */
+
+	/* Read Extension Flag, Number of 128-byte EDID extension blocks */
+	exynos_dp_read_byte_from_i2c(I2C_EDID_DEVICE_ADDR, EDID_EXTENSION_FLAG,
+			&extend_block);
+
+	if (extend_block > 0) {
+		printf("DP EDID data includes a single extension!\n");
+
+		/* Read EDID data */
+		retval = exynos_dp_read_bytes_from_i2c(I2C_EDID_DEVICE_ADDR,
+						EDID_HEADER_PATTERN,
+						EDID_BLOCK_LENGTH,
+						&edid[EDID_HEADER_PATTERN]);
+		if (retval != 0) {
+			printf("DP EDID Read failed!\n");
+			return -1;
+		}
+		sum = exynos_dp_calc_edid_check_sum(edid);
+		if (sum != 0) {
+			printf("DP EDID bad checksum!\n");
+			return -1;
+		}
+
+		/* Read additional EDID data */
+		retval = exynos_dp_read_bytes_from_i2c(I2C_EDID_DEVICE_ADDR,
+				EDID_BLOCK_LENGTH,
+				EDID_BLOCK_LENGTH,
+				&edid[EDID_BLOCK_LENGTH]);
+		if (retval != 0) {
+			printf("DP EDID Read failed!\n");
+			return -1;
+		}
+		sum = exynos_dp_calc_edid_check_sum(&edid[EDID_BLOCK_LENGTH]);
+		if (sum != 0) {
+			printf("DP EDID bad checksum!\n");
+			return -1;
+		}
+
+		exynos_dp_read_byte_from_dpcd(DPCD_TEST_REQUEST,
+					&test_vector);
+		if (test_vector & DPCD_TEST_EDID_READ) {
+			exynos_dp_write_byte_to_dpcd(DPCD_TEST_EDID_CHECKSUM,
+				edid[EDID_BLOCK_LENGTH + EDID_CHECKSUM]);
+			exynos_dp_write_byte_to_dpcd(DPCD_TEST_RESPONSE,
+				DPCD_TEST_EDID_CHECKSUM_WRITE);
+		}
+	} else {
+		debug("DP EDID data does not include any extensions.\n");
+
+		/* Read EDID data */
+		retval = exynos_dp_read_bytes_from_i2c(I2C_EDID_DEVICE_ADDR,
+				EDID_HEADER_PATTERN,
+				EDID_BLOCK_LENGTH,
+				&edid[EDID_HEADER_PATTERN]);
+
+		if (retval != 0) {
+			printf("DP EDID Read failed!\n");
+			return -1;
+		}
+		sum = exynos_dp_calc_edid_check_sum(edid);
+		if (sum != 0) {
+			printf("DP EDID bad checksum!\n");
+			return -1;
+		}
+
+		exynos_dp_read_byte_from_dpcd(DPCD_TEST_REQUEST,
+			&test_vector);
+		if (test_vector & DPCD_TEST_EDID_READ) {
+			exynos_dp_write_byte_to_dpcd(DPCD_TEST_EDID_CHECKSUM,
+				edid[EDID_CHECKSUM]);
+			exynos_dp_write_byte_to_dpcd(DPCD_TEST_RESPONSE,
+				DPCD_TEST_EDID_CHECKSUM_WRITE);
+		}
+	}
+
+	debug("DP EDID Read success!\n");
+
+	return 0;
+}
+
+static unsigned int exynos_dp_handle_edid(struct edp_device_info *edp_info)
+{
+	unsigned char buf[12];
+	unsigned int ret;
+	unsigned char temp;
+	unsigned char retry_cnt;
+	unsigned char dpcd_rev[16];
+	unsigned char lane_bw[16];
+	unsigned char lane_cnt[16];
+
+	memset(dpcd_rev, 0, 16);
+	memset(lane_bw, 0, 16);
+	memset(lane_cnt, 0, 16);
+	memset(buf, 0, 12);
+
+	retry_cnt = 5;
+	while (retry_cnt) {
+		/* Read DPCD 0x0000-0x000b */
+		ret = exynos_dp_read_bytes_from_dpcd(DPCD_DPCD_REV, 12,
+				buf);
+		if (ret != EXYNOS_DP_SUCCESS) {
+			if (retry_cnt == 0) {
+				printf("DP read_byte_from_dpcd() failed\n");
+				return ret;
+			}
+			retry_cnt--;
+		} else
+			break;
+	}
+
+	/* */
+	temp = buf[DPCD_DPCD_REV];
+	if (temp == DP_DPCD_REV_10 || temp == DP_DPCD_REV_11)
+		edp_info->dpcd_rev = temp;
+	else {
+		printf("DP Wrong DPCD Rev : %x\n", temp);
+		return -ENODEV;
+	}
+
+	temp = buf[DPCD_MAX_LINK_RATE];
+	if (temp == DP_LANE_BW_1_62 || temp == DP_LANE_BW_2_70)
+		edp_info->lane_bw = temp;
+	else {
+		printf("DP Wrong MAX LINK RATE : %x\n", temp);
+		return -EINVAL;
+	}
+
+	/*Refer VESA Display Port Stnadard Ver1.1a Page 120 */
+	if (edp_info->dpcd_rev == DP_DPCD_REV_11) {
+		temp = buf[DPCD_MAX_LANE_COUNT] & 0x1f;
+		if (buf[DPCD_MAX_LANE_COUNT] & 0x80)
+			edp_info->dpcd_efc = 1;
+		else
+			edp_info->dpcd_efc = 0;
+	} else {
+		temp = buf[DPCD_MAX_LANE_COUNT];
+		edp_info->dpcd_efc = 0;
+	}
+
+	if (temp == DP_LANE_CNT_1 || temp == DP_LANE_CNT_2 ||
+			temp == DP_LANE_CNT_4) {
+		edp_info->lane_cnt = temp;
+	} else {
+		printf("DP Wrong MAX LANE COUNT : %x\n", temp);
+		return -EINVAL;
+	}
+
+	ret = exynos_dp_read_edid();
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP exynos_dp_read_edid() failed\n");
+		return -EINVAL;
+	}
+
+	return ret;
+}
+
+static void exynos_dp_init_training(void)
+{
+	/*
+	 * MACRO_RST must be applied after the PLL_LOCK to avoid
+	 * the DP inter pair skew issue for at least 10 us
+	 */
+	exynos_dp_reset_macro();
+
+	/* All DP analog module power up */
+	exynos_dp_set_analog_power_down(POWER_ALL, 0);
+}
+
+static unsigned int exynos_dp_link_start(struct edp_device_info *edp_info)
+{
+	unsigned char buf[5];
+	unsigned int ret = 0;
+
+	debug("DP: %s was called\n", __func__);
+
+	edp_info->lt_info.lt_status = DP_LT_CR;
+	edp_info->lt_info.ep_loop = 0;
+	edp_info->lt_info.cr_loop[0] = 0;
+	edp_info->lt_info.cr_loop[1] = 0;
+	edp_info->lt_info.cr_loop[2] = 0;
+	edp_info->lt_info.cr_loop[3] = 0;
+
+		/* Set sink to D0 (Sink Not Ready) mode. */
+		ret = exynos_dp_write_byte_to_dpcd(DPCD_SINK_POWER_STATE,
+				DPCD_SET_POWER_STATE_D0);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP write_dpcd_byte failed\n");
+		return ret;
+	}
+
+	/* Set link rate and count as you want to establish*/
+	exynos_dp_set_link_bandwidth(edp_info->lane_bw);
+	exynos_dp_set_lane_count(edp_info->lane_cnt);
+
+	/* Setup RX configuration */
+	buf[0] = edp_info->lane_bw;
+	buf[1] = edp_info->lane_cnt;
+
+	ret = exynos_dp_write_bytes_to_dpcd(DPCD_LINK_BW_SET, 2,
+			buf);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP write_dpcd_byte failed\n");
+		return ret;
+	}
+
+	exynos_dp_set_lane_pre_emphasis(PRE_EMPHASIS_LEVEL_0,
+			edp_info->lane_cnt);
+
+	/* Set training pattern 1 */
+	exynos_dp_set_training_pattern(TRAINING_PTN1);
+
+	/* Set RX training pattern */
+	buf[0] = DPCD_SCRAMBLING_DISABLED | DPCD_TRAINING_PATTERN_1;
+
+	buf[1] = DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_0 |
+		DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_0;
+	buf[2] = DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_0 |
+		DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_0;
+	buf[3] = DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_0 |
+		DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_0;
+	buf[4] = DPCD_PRE_EMPHASIS_SET_PATTERN_2_LEVEL_0 |
+		DPCD_VOLTAGE_SWING_SET_PATTERN_1_LEVEL_0;
+
+	ret = exynos_dp_write_bytes_to_dpcd(DPCD_TRAINING_PATTERN_SET,
+			5, buf);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP write_dpcd_byte failed\n");
+		return ret;
+	}
+
+	return ret;
+}
+
+static unsigned int exynos_dp_training_pattern_dis(void)
+{
+	unsigned int ret = EXYNOS_DP_SUCCESS;
+
+	exynos_dp_set_training_pattern(DP_NONE);
+
+	ret = exynos_dp_write_byte_to_dpcd(DPCD_TRAINING_PATTERN_SET,
+			DPCD_TRAINING_PATTERN_DISABLED);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP requst_link_traninig_req failed\n");
+		return -EAGAIN;
+	}
+
+	return ret;
+}
+
+static unsigned int exynos_dp_enable_rx_to_enhanced_mode(unsigned char enable)
+{
+	unsigned char data;
+	unsigned int ret = EXYNOS_DP_SUCCESS;
+
+	ret = exynos_dp_read_byte_from_dpcd(DPCD_LANE_COUNT_SET,
+			&data);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP read_from_dpcd failed\n");
+		return -EAGAIN;
+	}
+
+	if (enable)
+		data = DPCD_ENHANCED_FRAME_EN | DPCD_LN_COUNT_SET(data);
+	else
+		data = DPCD_LN_COUNT_SET(data);
+
+	ret = exynos_dp_write_byte_to_dpcd(DPCD_LANE_COUNT_SET,
+			data);
+	if (ret != EXYNOS_DP_SUCCESS) {
+			printf("DP write_to_dpcd failed\n");
+			return -EAGAIN;
+
+	}
+
+	return ret;
+}
+
+static unsigned int exynos_dp_set_enhanced_mode(unsigned char enhance_mode)
+{
+	unsigned int ret = EXYNOS_DP_SUCCESS;
+
+	ret = exynos_dp_enable_rx_to_enhanced_mode(enhance_mode);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP rx_enhance_mode failed\n");
+		return -EAGAIN;
+	}
+
+	exynos_dp_enable_enhanced_mode(enhance_mode);
+
+	return ret;
+}
+
+static int exynos_dp_read_dpcd_lane_stat(struct edp_device_info *edp_info,
+		unsigned char *status)
+{
+	unsigned int ret, i;
+	unsigned char buf[2];
+	unsigned char lane_stat[DP_LANE_CNT_4] = {0,};
+	unsigned char shift_val[DP_LANE_CNT_4] = {0,};
+
+	shift_val[0] = 0;
+	shift_val[1] = 4;
+	shift_val[2] = 0;
+	shift_val[3] = 4;
+
+	ret = exynos_dp_read_bytes_from_dpcd(DPCD_LANE0_1_STATUS, 2, buf);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP read lane status failed\n");
+		return ret;
+	}
+
+	for (i = 0; i < edp_info->lane_cnt; i++) {
+		lane_stat[i] = (buf[(i / 2)] >> shift_val[i]) & 0x0f;
+		if (lane_stat[0] != lane_stat[i]) {
+			printf("Wrong lane status\n");
+			return -EINVAL;
+		}
+	}
+
+	*status = lane_stat[0];
+
+	return ret;
+}
+
+static unsigned int exynos_dp_read_dpcd_adj_req(unsigned char lane_num,
+		unsigned char *sw, unsigned char *em)
+{
+	unsigned int ret = EXYNOS_DP_SUCCESS;
+	unsigned char buf;
+	unsigned int dpcd_addr;
+	unsigned char shift_val[DP_LANE_CNT_4] = {0, 4, 0, 4};
+
+	/*lane_num value is used as arry index, so this range 0 ~ 3 */
+	dpcd_addr = DPCD_ADJUST_REQUEST_LANE0_1 + (lane_num / 2);
+
+	ret = exynos_dp_read_byte_from_dpcd(dpcd_addr, &buf);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP read adjust request failed\n");
+		return -EAGAIN;
+	}
+
+	*sw = ((buf >> shift_val[lane_num]) & 0x03);
+	*em = ((buf >> shift_val[lane_num]) & 0x0c) >> 2;
+
+	return ret;
+}
+
+static int exynos_dp_equalizer_err_link(struct edp_device_info *edp_info)
+{
+	int ret;
+
+	ret = exynos_dp_training_pattern_dis();
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP training_patter_disable() failed\n");
+		edp_info->lt_info.lt_status = DP_LT_FAIL;
+	}
+
+	ret = exynos_dp_set_enhanced_mode(edp_info->dpcd_efc);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP set_enhanced_mode() failed\n");
+		edp_info->lt_info.lt_status = DP_LT_FAIL;
+	}
+
+	return ret;
+}
+
+static int exynos_dp_reduce_link_rate(struct edp_device_info *edp_info)
+{
+	int ret;
+
+	if (edp_info->lane_bw == DP_LANE_BW_2_70) {
+		edp_info->lane_bw = DP_LANE_BW_1_62;
+		printf("DP Change lane bw to 1.62Gbps\n");
+		edp_info->lt_info.lt_status = DP_LT_START;
+		ret = EXYNOS_DP_SUCCESS;
+	} else {
+		ret = exynos_dp_training_pattern_dis();
+		if (ret != EXYNOS_DP_SUCCESS)
+			printf("DP training_patter_disable() failed\n");
+
+		ret = exynos_dp_set_enhanced_mode(edp_info->dpcd_efc);
+		if (ret != EXYNOS_DP_SUCCESS)
+			printf("DP set_enhanced_mode() failed\n");
+
+		edp_info->lt_info.lt_status = DP_LT_FAIL;
+	}
+
+	return ret;
+}
+
+static unsigned int exynos_dp_process_clock_recovery(struct edp_device_info
+							*edp_info)
+{
+	unsigned int ret = EXYNOS_DP_SUCCESS;
+	unsigned char lane_stat;
+	unsigned char lt_ctl_val[DP_LANE_CNT_4] = {0, };
+	unsigned int i;
+	unsigned char adj_req_sw;
+	unsigned char adj_req_em;
+	unsigned char buf[5];
+
+	debug("DP: %s was called\n", __func__);
+	mdelay(1);
+
+	ret = exynos_dp_read_dpcd_lane_stat(edp_info, &lane_stat);
+	if (ret != EXYNOS_DP_SUCCESS) {
+			printf("DP read lane status failed\n");
+			edp_info->lt_info.lt_status = DP_LT_FAIL;
+			return ret;
+	}
+
+	if (lane_stat & DP_LANE_STAT_CR_DONE) {
+		debug("DP clock Recovery training succeed\n");
+		exynos_dp_set_training_pattern(TRAINING_PTN2);
+
+		for (i = 0; i < edp_info->lane_cnt; i++) {
+			ret = exynos_dp_read_dpcd_adj_req(i, &adj_req_sw,
+					&adj_req_em);
+			if (ret != EXYNOS_DP_SUCCESS) {
+				edp_info->lt_info.lt_status = DP_LT_FAIL;
+				return ret;
+			}
+
+			lt_ctl_val[i] = 0;
+			lt_ctl_val[i] = adj_req_em << 3 | adj_req_sw;
+
+			if ((adj_req_sw == VOLTAGE_LEVEL_3)
+				|| (adj_req_em == PRE_EMPHASIS_LEVEL_3)) {
+				lt_ctl_val[i] |= MAX_DRIVE_CURRENT_REACH_3 |
+					MAX_PRE_EMPHASIS_REACH_3;
+			}
+			exynos_dp_set_lanex_pre_emphasis(lt_ctl_val[i], i);
+		}
+
+		buf[0] =  DPCD_SCRAMBLING_DISABLED | DPCD_TRAINING_PATTERN_2;
+		buf[1] = lt_ctl_val[0];
+		buf[2] = lt_ctl_val[1];
+		buf[3] = lt_ctl_val[2];
+		buf[4] = lt_ctl_val[3];
+
+		ret = exynos_dp_write_bytes_to_dpcd(
+				DPCD_TRAINING_PATTERN_SET, 5, buf);
+		if (ret != EXYNOS_DP_SUCCESS) {
+			printf("DP write traning pattern1 failed\n");
+			edp_info->lt_info.lt_status = DP_LT_FAIL;
+			return ret;
+		} else
+			edp_info->lt_info.lt_status = DP_LT_ET;
+	} else {
+		for (i = 0; i < edp_info->lane_cnt; i++) {
+			lt_ctl_val[i] = exynos_dp_get_lanex_pre_emphasis(i);
+				ret = exynos_dp_read_dpcd_adj_req(i,
+						&adj_req_sw, &adj_req_em);
+			if (ret != EXYNOS_DP_SUCCESS) {
+				printf("DP read adj req failed\n");
+				edp_info->lt_info.lt_status = DP_LT_FAIL;
+				return ret;
+			}
+
+			if ((adj_req_sw == VOLTAGE_LEVEL_3) ||
+					(adj_req_em == PRE_EMPHASIS_LEVEL_3))
+				ret = exynos_dp_reduce_link_rate(edp_info);
+
+			if ((DRIVE_CURRENT_SET_0_GET(lt_ctl_val[i]) ==
+						adj_req_sw) &&
+				(PRE_EMPHASIS_SET_0_GET(lt_ctl_val[i]) ==
+						adj_req_em)) {
+				edp_info->lt_info.cr_loop[i]++;
+				if (edp_info->lt_info.cr_loop[i] == MAX_CR_LOOP)
+					ret = exynos_dp_reduce_link_rate(
+							edp_info);
+			}
+
+			lt_ctl_val[i] = 0;
+			lt_ctl_val[i] = adj_req_em << 3 | adj_req_sw;
+
+			if ((adj_req_sw == VOLTAGE_LEVEL_3) ||
+					(adj_req_em == PRE_EMPHASIS_LEVEL_3)) {
+				lt_ctl_val[i] |= MAX_DRIVE_CURRENT_REACH_3 |
+					MAX_PRE_EMPHASIS_REACH_3;
+			}
+			exynos_dp_set_lanex_pre_emphasis(lt_ctl_val[i], i);
+		}
+
+		ret = exynos_dp_write_bytes_to_dpcd(
+				DPCD_TRAINING_LANE0_SET, 4, lt_ctl_val);
+		if (ret != EXYNOS_DP_SUCCESS) {
+			printf("DP write traning pattern2 failed\n");
+			edp_info->lt_info.lt_status = DP_LT_FAIL;
+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+static unsigned int exynos_dp_process_equalizer_training(struct edp_device_info
+		*edp_info)
+{
+	unsigned int ret = EXYNOS_DP_SUCCESS;
+	unsigned char lane_stat, adj_req_sw, adj_req_em, i;
+	unsigned char lt_ctl_val[DP_LANE_CNT_4] = {0,};
+	unsigned char interlane_aligned = 0;
+	unsigned char f_bw;
+	unsigned char f_lane_cnt;
+	unsigned char sink_stat;
+
+	mdelay(1);
+
+	ret = exynos_dp_read_dpcd_lane_stat(edp_info, &lane_stat);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP read lane status failed\n");
+		edp_info->lt_info.lt_status = DP_LT_FAIL;
+		return ret;
+	}
+
+	debug("DP lane stat : %x\n", lane_stat);
+
+	if (lane_stat & DP_LANE_STAT_CR_DONE) {
+		ret = exynos_dp_read_byte_from_dpcd(DPCD_LN_ALIGN_UPDATED,
+				&sink_stat);
+		if (ret != EXYNOS_DP_SUCCESS) {
+			edp_info->lt_info.lt_status = DP_LT_FAIL;
+
+			return ret;
+		}
+
+		interlane_aligned = (sink_stat & DPCD_INTERLANE_ALIGN_DONE);
+
+		for (i = 0; i < edp_info->lane_cnt; i++) {
+			ret = exynos_dp_read_dpcd_adj_req(i,
+					&adj_req_sw, &adj_req_em);
+			if (ret != EXYNOS_DP_SUCCESS) {
+				printf("DP read adj req 1 failed\n");
+				edp_info->lt_info.lt_status = DP_LT_FAIL;
+
+				return ret;
+			}
+
+			lt_ctl_val[i] = 0;
+			lt_ctl_val[i] = adj_req_em << 3 | adj_req_sw;
+
+			if ((adj_req_sw == VOLTAGE_LEVEL_3) ||
+				(adj_req_em == PRE_EMPHASIS_LEVEL_3)) {
+				lt_ctl_val[i] |= MAX_DRIVE_CURRENT_REACH_3;
+				lt_ctl_val[i] |= MAX_PRE_EMPHASIS_REACH_3;
+			}
+		}
+
+		if (((lane_stat&DP_LANE_STAT_CE_DONE) &&
+			(lane_stat&DP_LANE_STAT_SYM_LOCK))
+			&& (interlane_aligned == DPCD_INTERLANE_ALIGN_DONE)) {
+			debug("DP Equalizer training succeed\n");
+
+			f_bw = exynos_dp_get_link_bandwidth();
+			f_lane_cnt = exynos_dp_get_lane_count();
+
+			debug("DP final BandWidth : %x\n", f_bw);
+			debug("DP final Lane Count : %x\n", f_lane_cnt);
+
+			edp_info->lt_info.lt_status = DP_LT_FINISHED;
+
+			exynos_dp_equalizer_err_link(edp_info);
+
+		} else {
+			edp_info->lt_info.ep_loop++;
+
+			if (edp_info->lt_info.ep_loop > MAX_EQ_LOOP) {
+				if (edp_info->lane_bw == DP_LANE_BW_2_70) {
+					ret = exynos_dp_reduce_link_rate(
+							edp_info);
+				} else {
+					edp_info->lt_info.lt_status =
+								DP_LT_FAIL;
+					exynos_dp_equalizer_err_link(edp_info);
+				}
+			} else {
+				for (i = 0; i < edp_info->lane_cnt; i++)
+					exynos_dp_set_lanex_pre_emphasis(
+							lt_ctl_val[i], i);
+
+				ret = exynos_dp_write_bytes_to_dpcd(
+					DPCD_TRAINING_LANE0_SET,
+					4, lt_ctl_val);
+				if (ret != EXYNOS_DP_SUCCESS) {
+					printf("DP set lt pattern failed\n");
+					edp_info->lt_info.lt_status =
+								DP_LT_FAIL;
+					exynos_dp_equalizer_err_link(edp_info);
+				}
+			}
+		}
+	} else if (edp_info->lane_bw == DP_LANE_BW_2_70) {
+		ret = exynos_dp_reduce_link_rate(edp_info);
+	} else {
+		edp_info->lt_info.lt_status = DP_LT_FAIL;
+		exynos_dp_equalizer_err_link(edp_info);
+	}
+
+	return ret;
+}
+
+static unsigned int exynos_dp_sw_link_training(struct edp_device_info *edp_info)
+{
+	unsigned int ret = 0;
+	int training_finished;
+
+	/* Turn off unnecessary lane */
+	if (edp_info->lane_cnt == 1)
+		exynos_dp_set_analog_power_down(CH1_BLOCK, 1);
+
+	training_finished = 0;
+
+	edp_info->lt_info.lt_status = DP_LT_START;
+
+	/* Process here */
+	while (!training_finished) {
+		switch (edp_info->lt_info.lt_status) {
+		case DP_LT_START:
+			ret = exynos_dp_link_start(edp_info);
+			if (ret != EXYNOS_DP_SUCCESS) {
+				printf("DP LT:link start failed\n");
+				return ret;
+			}
+			break;
+		case DP_LT_CR:
+			ret = exynos_dp_process_clock_recovery(edp_info);
+			if (ret != EXYNOS_DP_SUCCESS) {
+				printf("DP LT:clock recovery failed\n");
+				return ret;
+			}
+			break;
+		case DP_LT_ET:
+			ret = exynos_dp_process_equalizer_training(edp_info);
+			if (ret != EXYNOS_DP_SUCCESS) {
+				printf("DP LT:equalizer training failed\n");
+				return ret;
+			}
+			break;
+		case DP_LT_FINISHED:
+			training_finished = 1;
+			break;
+		case DP_LT_FAIL:
+			return -1;
+		}
+	}
+
+	return ret;
+}
+
+static unsigned int exynos_dp_set_link_train(struct edp_device_info *edp_info)
+{
+	unsigned int ret;
+
+	exynos_dp_init_training();
+
+	ret = exynos_dp_sw_link_training(edp_info);
+	if (ret != EXYNOS_DP_SUCCESS)
+		printf("DP dp_sw_link_traning() failed\n");
+
+	return ret;
+}
+
+static void exynos_dp_enable_scramble(unsigned int enable)
+{
+	unsigned char data;
+
+	if (enable) {
+		exynos_dp_enable_scrambling(DP_ENABLE);
+
+		exynos_dp_read_byte_from_dpcd(DPCD_TRAINING_PATTERN_SET,
+				&data);
+		exynos_dp_write_byte_to_dpcd(DPCD_TRAINING_PATTERN_SET,
+			(u8)(data & ~DPCD_SCRAMBLING_DISABLED));
+	} else {
+		exynos_dp_enable_scrambling(DP_DISABLE);
+		exynos_dp_read_byte_from_dpcd(DPCD_TRAINING_PATTERN_SET,
+				&data);
+		exynos_dp_write_byte_to_dpcd(DPCD_TRAINING_PATTERN_SET,
+			(u8)(data | DPCD_SCRAMBLING_DISABLED));
+	}
+}
+
+static unsigned int exynos_dp_config_video(struct edp_device_info *edp_info)
+{
+	unsigned int ret = 0;
+	unsigned int retry_cnt;
+
+	mdelay(1);
+
+	if (edp_info->video_info.master_mode) {
+		printf("DP does not support master mode\n");
+		return -ENODEV;
+	} else {
+		/* debug slave */
+		exynos_dp_config_video_slave_mode(&edp_info->video_info);
+	}
+
+	exynos_dp_set_video_color_format(&edp_info->video_info);
+
+	if (edp_info->video_info.bist_mode) {
+		if (exynos_dp_config_video_bist(edp_info) != 0)
+			return -1;
+	}
+
+	ret = exynos_dp_get_pll_lock_status();
+	if (ret != PLL_LOCKED) {
+		printf("DP PLL is not locked yet\n");
+		return -EIO;
+	}
+
+	if (edp_info->video_info.master_mode == 0) {
+		retry_cnt = 10;
+		while (retry_cnt) {
+			ret = exynos_dp_is_slave_video_stream_clock_on();
+			if (ret != EXYNOS_DP_SUCCESS) {
+				if (retry_cnt == 0) {
+					printf("DP stream_clock_on failed\n");
+					return ret;
+				}
+				retry_cnt--;
+				mdelay(1);
+			} else
+				break;
+		}
+	}
+
+	/* Set to use the register calculated M/N video */
+	exynos_dp_set_video_cr_mn(CALCULATED_M, 0, 0);
+
+	/* For video bist, Video timing must be generated by register */
+	exynos_dp_set_video_timing_mode(VIDEO_TIMING_FROM_CAPTURE);
+
+	/* Enable video bist */
+	if (edp_info->video_info.bist_pattern != COLOR_RAMP &&
+		edp_info->video_info.bist_pattern != BALCK_WHITE_V_LINES &&
+		edp_info->video_info.bist_pattern != COLOR_SQUARE)
+		exynos_dp_enable_video_bist(edp_info->video_info.bist_mode);
+	else
+		exynos_dp_enable_video_bist(DP_DISABLE);
+
+	/* Disable video mute */
+	exynos_dp_enable_video_mute(DP_DISABLE);
+
+	/* Configure video Master or Slave mode */
+	exynos_dp_enable_video_master(edp_info->video_info.master_mode);
+
+	/* Enable video */
+	exynos_dp_start_video();
+
+	if (edp_info->video_info.master_mode == 0) {
+		retry_cnt = 100;
+		while (retry_cnt) {
+			ret = exynos_dp_is_video_stream_on();
+			if (ret != EXYNOS_DP_SUCCESS) {
+				if (retry_cnt == 0) {
+					printf("DP Timeout of video stream\n");
+					return ret;
+				}
+				retry_cnt--;
+				mdelay(5);
+			} else
+				break;
+		}
+	}
+
+	return ret;
+}
+
+unsigned int exynos_init_dp(void)
+{
+	unsigned int ret;
+	struct edp_device_info *edp_info;
+	struct edp_disp_info disp_info;
+
+	edp_info = kzalloc(sizeof(struct edp_device_info), GFP_KERNEL);
+	if (!edp_info) {
+		debug("failed to allocate edp device object.\n");
+		return -EFAULT;
+	}
+
+	edp_info = dp_pd->edp_dev_info;
+	if (edp_info == NULL) {
+		debug("failed to get edp_info data.\n");
+		return -EFAULT;
+	}
+	disp_info = edp_info->disp_info;
+
+	exynos_dp_disp_info(&edp_info->disp_info);
+
+	if (dp_pd->phy_enable)
+		dp_pd->phy_enable(1);
+
+	ret = exynos_dp_init_dp();
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP exynos_dp_init_dp() failed\n");
+		return ret;
+	}
+
+	ret = exynos_dp_handle_edid(edp_info);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("EDP handle_edid fail\n");
+		return ret;
+	}
+
+	ret = exynos_dp_set_link_train(edp_info);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("DP link training fail\n");
+		return ret;
+	}
+
+	exynos_dp_enable_scramble(DP_ENABLE);
+	exynos_dp_enable_rx_to_enhanced_mode(DP_ENABLE);
+	exynos_dp_enable_enhanced_mode(DP_ENABLE);
+
+	exynos_dp_set_link_bandwidth(edp_info->lane_bw);
+	exynos_dp_set_lane_count(edp_info->lane_cnt);
+
+	exynos_dp_init_video();
+	ret = exynos_dp_config_video(edp_info);
+	if (ret != EXYNOS_DP_SUCCESS) {
+		printf("Exynos DP init failed\n");
+		return ret;
+	}
+
+	printf("Exynos DP init done\n");
+
+	return ret;
+}
+
+void exynos_set_dp_platform_data(struct exynos_dp_platform_data *pd)
+{
+	if (pd == NULL) {
+		debug("pd is NULL\n");
+		return;
+	}
+
+	dp_pd = pd;
+}