drm/bridge: cdns-mhdp: Remove dependencies to cdns-mhdp-common

Copy all necessary parts from cdns-mhdp-common and do not include
cdns-mhdp-common.h and link cdns-mhdp-common.c to cdns-mhdp any
more.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/bridge/Makefile

@@ -18,7 +18,7 @@ obj-$(CONFIG_DRM_TI_TFP410) += ti-tfp410.o
 obj-$(CONFIG_DRM_CDNS_MHDP) += mhdp8546.o
 obj-y += synopsys/
 
-mhdp8546-objs := cdns-mhdp-common.o cdns-mhdp.o
+mhdp8546-objs := cdns-mhdp.o
 ifeq ($(CONFIG_DRM_CDNS_MHDP_J721E),y)
 	mhdp8546-objs += cdns-mhdp-j721e.o
 endif

drivers/gpu/drm/bridge/cdns-mhdp-common.c

@@ -1,1103 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
- * Author: Chris Zhong <zyw@rock-chips.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- */
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/io.h>
-#include <linux/iopoll.h>
-#include <linux/reset.h>
-
-#include <asm/unaligned.h>
-
-#include <drm/bridge/cdns-mhdp-common.h>
-#include <drm/drm_modes.h>
-#include <drm/drm_print.h>
-
-#define CDNS_DP_SPDIF_CLK		200000000
-#define FW_ALIVE_TIMEOUT_US		1000000
-#define MAILBOX_RETRY_US		1000
-#define MAILBOX_TIMEOUT_US		5000000
-#define LINK_TRAINING_RETRY_MS		20
-#define LINK_TRAINING_TIMEOUT_MS	500
-
-static inline u32 get_unaligned_be24(const void *p)
-{
-	const u8 *_p = p;
-
-	return _p[0] << 16 | _p[1] << 8 | _p[2];
-}
-
-static inline void put_unaligned_be24(u32 val, void *p)
-{
-	u8 *_p = p;
-
-	_p[0] = val >> 16;
-	_p[1] = val >> 8;
-	_p[2] = val;
-}
-
-void cdns_mhdp_set_fw_clk(struct cdns_mhdp_device *mhdp, unsigned long clk)
-{
-	writel(clk / 1000000, mhdp->regs + SW_CLK_H);
-}
-EXPORT_SYMBOL(cdns_mhdp_set_fw_clk);
-
-void cdns_mhdp_clock_reset(struct cdns_mhdp_device *mhdp)
-{
-	u32 val;
-
-	val = DPTX_FRMR_DATA_CLK_RSTN_EN |
-	      DPTX_FRMR_DATA_CLK_EN |
-	      DPTX_PHY_DATA_RSTN_EN |
-	      DPTX_PHY_DATA_CLK_EN |
-	      DPTX_PHY_CHAR_RSTN_EN |
-	      DPTX_PHY_CHAR_CLK_EN |
-	      SOURCE_AUX_SYS_CLK_RSTN_EN |
-	      SOURCE_AUX_SYS_CLK_EN |
-	      DPTX_SYS_CLK_RSTN_EN |
-	      DPTX_SYS_CLK_EN |
-	      CFG_DPTX_VIF_CLK_RSTN_EN |
-	      CFG_DPTX_VIF_CLK_EN;
-	writel(val, mhdp->regs + SOURCE_DPTX_CAR);
-
-	val = SOURCE_PHY_RSTN_EN | SOURCE_PHY_CLK_EN;
-	writel(val, mhdp->regs + SOURCE_PHY_CAR);
-
-	val = SOURCE_PKT_SYS_RSTN_EN |
-	      SOURCE_PKT_SYS_CLK_EN |
-	      SOURCE_PKT_DATA_RSTN_EN |
-	      SOURCE_PKT_DATA_CLK_EN;
-	writel(val, mhdp->regs + SOURCE_PKT_CAR);
-
-	val = SPDIF_CDR_CLK_RSTN_EN |
-	      SPDIF_CDR_CLK_EN |
-	      SOURCE_AIF_SYS_RSTN_EN |
-	      SOURCE_AIF_SYS_CLK_EN |
-	      SOURCE_AIF_CLK_RSTN_EN |
-	      SOURCE_AIF_CLK_EN;
-	writel(val, mhdp->regs + SOURCE_AIF_CAR);
-
-	val = SOURCE_CIPHER_SYSTEM_CLK_RSTN_EN |
-	      SOURCE_CIPHER_SYS_CLK_EN |
-	      SOURCE_CIPHER_CHAR_CLK_RSTN_EN |
-	      SOURCE_CIPHER_CHAR_CLK_EN;
-	writel(val, mhdp->regs + SOURCE_CIPHER_CAR);
-
-	val = SOURCE_CRYPTO_SYS_CLK_RSTN_EN |
-	      SOURCE_CRYPTO_SYS_CLK_EN;
-	writel(val, mhdp->regs + SOURCE_CRYPTO_CAR);
-
-	/* enable Mailbox and PIF interrupt */
-	writel(0, mhdp->regs + APB_INT_MASK);
-}
-EXPORT_SYMBOL(cdns_mhdp_clock_reset);
-
-static int cdns_mhdp_mailbox_read(struct cdns_mhdp_device *mhdp)
-{
-	int val, ret;
-
-	ret = readx_poll_timeout(readl, mhdp->regs + MAILBOX_EMPTY_ADDR,
-				 val, !val, MAILBOX_RETRY_US,
-				 MAILBOX_TIMEOUT_US);
-	if (ret < 0)
-		return ret;
-
-	return readl(mhdp->regs + MAILBOX0_RD_DATA) & 0xff;
-}
-
-static int cdp_dp_mailbox_write(struct cdns_mhdp_device *mhdp, u8 val)
-{
-	int ret, full;
-
-	ret = readx_poll_timeout(readl, mhdp->regs + MAILBOX_FULL_ADDR,
-				 full, !full, MAILBOX_RETRY_US,
-				 MAILBOX_TIMEOUT_US);
-	if (ret < 0)
-		return ret;
-
-	writel(val, mhdp->regs + MAILBOX0_WR_DATA);
-
-	return 0;
-}
-
-static int cdns_mhdp_mailbox_validate_receive(struct cdns_mhdp_device *mhdp,
-					      u8 module_id, u8 opcode,
-					      u16 req_size)
-{
-	u32 mbox_size, i;
-	u8 header[4];
-	int ret;
-
-	/* read the header of the message */
-	for (i = 0; i < 4; i++) {
-		ret = cdns_mhdp_mailbox_read(mhdp);
-		if (ret < 0)
-			return ret;
-
-		header[i] = ret;
-	}
-
-	mbox_size = get_unaligned_be16(header + 2);
-
-	if (opcode != header[0] || module_id != header[1] ||
-	    req_size != mbox_size) {
-		/*
-		 * If the message in mailbox is not what we want, we need to
-		 * clear the mailbox by reading its contents.
-		 */
-		for (i = 0; i < mbox_size; i++)
-			if (cdns_mhdp_mailbox_read(mhdp) < 0)
-				break;
-
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int cdns_mhdp_mailbox_read_receive(struct cdns_mhdp_device *mhdp,
-					  u8 *buff, u16 buff_size)
-{
-	u32 i;
-	int ret;
-
-	for (i = 0; i < buff_size; i++) {
-		ret = cdns_mhdp_mailbox_read(mhdp);
-		if (ret < 0)
-			return ret;
-
-		buff[i] = ret;
-	}
-
-	return 0;
-}
-
-static int cdns_mhdp_mailbox_send(struct cdns_mhdp_device *mhdp, u8 module_id,
-				  u8 opcode, u16 size, u8 *message)
-{
-	u8 header[4];
-	int ret, i;
-
-	header[0] = opcode;
-	header[1] = module_id;
-	put_unaligned_be16(size, header + 2);
-
-	for (i = 0; i < 4; i++) {
-		ret = cdp_dp_mailbox_write(mhdp, header[i]);
-		if (ret)
-			return ret;
-	}
-
-	for (i = 0; i < size; i++) {
-		ret = cdp_dp_mailbox_write(mhdp, message[i]);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-int cdns_mhdp_reg_read(struct cdns_mhdp_device *mhdp, u32 addr, u32 *value)
-{
-	u8 msg[4], resp[8];
-	int ret;
-
-	if (addr == 0) {
-		ret = -EINVAL;
-		goto err_reg_read;
-	}
-
-	put_unaligned_be32(addr, msg);
-
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_GENERAL,
-				     GENERAL_REGISTER_READ,
-				     sizeof(msg), msg);
-	if (ret)
-		goto err_reg_read;
-
-	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_GENERAL,
-						 GENERAL_REGISTER_READ,
-						 sizeof(resp));
-	if (ret)
-		goto err_reg_read;
-
-	ret = cdns_mhdp_mailbox_read_receive(mhdp, resp, sizeof(resp));
-	if (ret)
-		goto err_reg_read;
-
-	/* Returned address value should be the same as requested */
-	if (memcmp(msg, resp, sizeof(msg))) {
-		ret = -EINVAL;
-		goto err_reg_read;
-	}
-
-	*value = get_unaligned_be32(resp + 4);
-
-err_reg_read:
-	if (ret) {
-		DRM_DEV_ERROR(mhdp->dev, "Failed to read register.\n");
-		*value = 0;
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_reg_read);
-
-int cdns_mhdp_reg_write(struct cdns_mhdp_device *mhdp, u16 addr, u32 val)
-{
-	u8 msg[6];
-
-	put_unaligned_be16(addr, msg);
-	put_unaligned_be32(val, msg + 2);
-
-	return cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				      DPTX_WRITE_REGISTER, sizeof(msg), msg);
-}
-EXPORT_SYMBOL(cdns_mhdp_reg_write);
-
-int cdns_mhdp_reg_write_bit(struct cdns_mhdp_device *mhdp, u16 addr,
-				   u8 start_bit, u8 bits_no, u32 val)
-{
-	u8 field[8];
-
-	put_unaligned_be16(addr, field);
-	field[2] = start_bit;
-	field[3] = bits_no;
-	put_unaligned_be32(val, field + 4);
-
-	return cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				      DPTX_WRITE_FIELD, sizeof(field), field);
-}
-EXPORT_SYMBOL(cdns_mhdp_reg_write_bit);
-
-int cdns_mhdp_dpcd_read(struct cdns_mhdp_device *mhdp,
-			u32 addr, u8 *data, u16 len)
-{
-	u8 msg[5], reg[5];
-	int ret;
-
-	put_unaligned_be16(len, msg);
-	put_unaligned_be24(addr, msg + 2);
-
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				     DPTX_READ_DPCD, sizeof(msg), msg);
-	if (ret)
-		goto err_dpcd_read;
-
-	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_DP_TX,
-						 DPTX_READ_DPCD,
-						 sizeof(reg) + len);
-	if (ret)
-		goto err_dpcd_read;
-
-	ret = cdns_mhdp_mailbox_read_receive(mhdp, reg, sizeof(reg));
-	if (ret)
-		goto err_dpcd_read;
-
-	ret = cdns_mhdp_mailbox_read_receive(mhdp, data, len);
-
-err_dpcd_read:
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_dpcd_read);
-
-int cdns_mhdp_dpcd_write(struct cdns_mhdp_device *mhdp, u32 addr, u8 value)
-{
-	u8 msg[6], reg[5];
-	int ret;
-
-	put_unaligned_be16(1, msg);
-	put_unaligned_be24(addr, msg + 2);
-	msg[5] = value;
-
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				     DPTX_WRITE_DPCD, sizeof(msg), msg);
-	if (ret)
-		goto err_dpcd_write;
-
-	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_DP_TX,
-						 DPTX_WRITE_DPCD, sizeof(reg));
-	if (ret)
-		goto err_dpcd_write;
-
-	ret = cdns_mhdp_mailbox_read_receive(mhdp, reg, sizeof(reg));
-	if (ret)
-		goto err_dpcd_write;
-
-	if (addr != get_unaligned_be24(reg + 2))
-		ret = -EINVAL;
-
-err_dpcd_write:
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "dpcd write failed: %d\n", ret);
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_dpcd_write);
-
-int cdns_mhdp_load_firmware(struct cdns_mhdp_device *mhdp, const u32 *i_mem,
-			    u32 i_size, const u32 *d_mem, u32 d_size)
-{
-	u32 reg;
-	int i, ret;
-
-	/* reset ucpu before load firmware*/
-	writel(APB_IRAM_PATH | APB_DRAM_PATH | APB_XT_RESET,
-	       mhdp->regs + APB_CTRL);
-
-	for (i = 0; i < i_size; i += 4)
-		writel(*i_mem++, mhdp->regs + ADDR_IMEM + i);
-
-	for (i = 0; i < d_size; i += 4)
-		writel(*d_mem++, mhdp->regs + ADDR_DMEM + i);
-
-	/* un-reset ucpu */
-	writel(0, mhdp->regs + APB_CTRL);
-
-	/* check the keep alive register to make sure fw working */
-	ret = readx_poll_timeout(readl, mhdp->regs + KEEP_ALIVE,
-				 reg, reg, 2000, FW_ALIVE_TIMEOUT_US);
-	if (ret < 0) {
-		DRM_DEV_ERROR(mhdp->dev, "failed to loaded the FW reg = %x\n",
-			      reg);
-		return -EINVAL;
-	}
-
-	reg = readl(mhdp->regs + VER_L) & 0xff;
-	mhdp->fw_version = reg;
-	reg = readl(mhdp->regs + VER_H) & 0xff;
-	mhdp->fw_version |= reg << 8;
-	reg = readl(mhdp->regs + VER_LIB_L_ADDR) & 0xff;
-	mhdp->fw_version |= reg << 16;
-	reg = readl(mhdp->regs + VER_LIB_H_ADDR) & 0xff;
-	mhdp->fw_version |= reg << 24;
-
-	DRM_DEV_DEBUG(mhdp->dev, "firmware version: %x\n", mhdp->fw_version);
-
-	return 0;
-}
-EXPORT_SYMBOL(cdns_mhdp_load_firmware);
-
-int cdns_mhdp_set_firmware_active(struct cdns_mhdp_device *mhdp, bool enable)
-{
-	u8 msg[5];
-	int ret, i;
-
-	msg[0] = GENERAL_MAIN_CONTROL;
-	msg[1] = MB_MODULE_ID_GENERAL;
-	msg[2] = 0;
-	msg[3] = 1;
-	msg[4] = enable ? FW_ACTIVE : FW_STANDBY;
-
-	for (i = 0; i < sizeof(msg); i++) {
-		ret = cdp_dp_mailbox_write(mhdp, msg[i]);
-		if (ret)
-			goto err_set_firmware_active;
-	}
-
-	/* read the firmware state */
-	for (i = 0; i < sizeof(msg); i++)  {
-		ret = cdns_mhdp_mailbox_read(mhdp);
-		if (ret < 0)
-			goto err_set_firmware_active;
-
-		msg[i] = ret;
-	}
-
-	ret = 0;
-
-err_set_firmware_active:
-	if (ret < 0)
-		DRM_DEV_ERROR(mhdp->dev, "set firmware active failed\n");
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_set_firmware_active);
-
-int cdns_mhdp_set_host_cap(struct cdns_mhdp_device *mhdp, u8 lanes, bool flip)
-{
-	u8 msg[8];
-	int ret;
-
-	msg[0] = CDNS_DP_MAX_LINK_RATE;
-	msg[1] = lanes | SCRAMBLER_EN;
-	msg[2] = VOLTAGE_LEVEL_2;
-	msg[3] = PRE_EMPHASIS_LEVEL_3;
-	msg[4] = PTS1 | PTS2 | PTS3 | PTS4;
-	msg[5] = FAST_LT_NOT_SUPPORT;
-	msg[6] = flip ? LANE_MAPPING_FLIPPED : LANE_MAPPING_NORMAL;
-	msg[7] = ENHANCED;
-
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				     DPTX_SET_HOST_CAPABILITIES,
-				     sizeof(msg), msg);
-	if (ret)
-		goto err_set_host_cap;
-
-	ret = cdns_mhdp_reg_write(mhdp, DP_AUX_SWAP_INVERSION_CONTROL,
-				  AUX_HOST_INVERT);
-
-err_set_host_cap:
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "set host cap failed: %d\n", ret);
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_set_host_cap);
-
-int cdns_mhdp_event_config(struct cdns_mhdp_device *mhdp)
-{
-	u8 msg[5];
-	int ret;
-
-	memset(msg, 0, sizeof(msg));
-
-	msg[0] = DPTX_EVENT_ENABLE_HPD | DPTX_EVENT_ENABLE_TRAINING;
-
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				     DPTX_ENABLE_EVENT, sizeof(msg), msg);
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "set event config failed: %d\n", ret);
-
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_event_config);
-
-u32 cdns_mhdp_get_event(struct cdns_mhdp_device *mhdp)
-{
-	return readl(mhdp->regs + SW_EVENTS0);
-}
-EXPORT_SYMBOL(cdns_mhdp_get_event);
-
-int cdns_mhdp_get_hpd_status(struct cdns_mhdp_device *mhdp)
-{
-	u8 status;
-	int ret;
-
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				     DPTX_HPD_STATE, 0, NULL);
-	if (ret)
-		goto err_get_hpd;
-
-	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_DP_TX,
-						 DPTX_HPD_STATE,
-						 sizeof(status));
-	if (ret)
-		goto err_get_hpd;
-
-	ret = cdns_mhdp_mailbox_read_receive(mhdp, &status, sizeof(status));
-	if (ret)
-		goto err_get_hpd;
-
-	return status;
-
-err_get_hpd:
-	DRM_DEV_ERROR(mhdp->dev, "get hpd status failed: %d\n", ret);
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_get_hpd_status);
-
-int cdns_mhdp_get_edid_block(void *data, u8 *edid,
-			  unsigned int block, size_t length)
-{
-	struct cdns_mhdp_device *mhdp = data;
-	u8 msg[2], reg[2], i;
-	int ret;
-
-	for (i = 0; i < 4; i++) {
-		msg[0] = block / 2;
-		msg[1] = block % 2;
-
-		ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-					     DPTX_GET_EDID, sizeof(msg), msg);
-		if (ret)
-			continue;
-
-		ret = cdns_mhdp_mailbox_validate_receive(mhdp,
-							 MB_MODULE_ID_DP_TX,
-							 DPTX_GET_EDID,
-							 sizeof(reg) + length);
-		if (ret)
-			continue;
-
-		ret = cdns_mhdp_mailbox_read_receive(mhdp, reg, sizeof(reg));
-		if (ret)
-			continue;
-
-		ret = cdns_mhdp_mailbox_read_receive(mhdp, edid, length);
-		if (ret)
-			continue;
-
-		if (reg[0] == length && reg[1] == block / 2)
-			break;
-	}
-
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "get block[%d] edid failed: %d\n",
-			      block, ret);
-
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_get_edid_block);
-
-static int cdns_mhdp_training_start(struct cdns_mhdp_device *mhdp)
-{
-	unsigned long timeout;
-	u8 msg, event[2];
-	int ret;
-
-	msg = LINK_TRAINING_RUN;
-
-	/* start training */
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				     DPTX_TRAINING_CONTROL, sizeof(msg), &msg);
-	if (ret)
-		goto err_training_start;
-
-	timeout = jiffies + msecs_to_jiffies(LINK_TRAINING_TIMEOUT_MS);
-	while (time_before(jiffies, timeout)) {
-		msleep(LINK_TRAINING_RETRY_MS);
-		ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-					     DPTX_READ_EVENT, 0, NULL);
-		if (ret)
-			goto err_training_start;
-
-		ret = cdns_mhdp_mailbox_validate_receive(mhdp,
-							 MB_MODULE_ID_DP_TX,
-							 DPTX_READ_EVENT,
-							 sizeof(event));
-		if (ret)
-			goto err_training_start;
-
-		ret = cdns_mhdp_mailbox_read_receive(mhdp, event,
-						     sizeof(event));
-		if (ret)
-			goto err_training_start;
-
-		if (event[1] & EQ_PHASE_FINISHED)
-			return 0;
-	}
-
-	ret = -ETIMEDOUT;
-
-err_training_start:
-	DRM_DEV_ERROR(mhdp->dev, "training failed: %d\n", ret);
-	return ret;
-}
-
-static int cdns_mhdp_get_training_status(struct cdns_mhdp_device *mhdp)
-{
-	u8 status[10];
-	int ret;
-
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				     DPTX_READ_LINK_STAT, 0, NULL);
-	if (ret)
-		goto err_get_training_status;
-
-	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_DP_TX,
-						 DPTX_READ_LINK_STAT,
-						 sizeof(status));
-	if (ret)
-		goto err_get_training_status;
-
-	ret = cdns_mhdp_mailbox_read_receive(mhdp, status, sizeof(status));
-	if (ret)
-		goto err_get_training_status;
-
-	mhdp->link.rate = status[0];
-	mhdp->link.num_lanes = status[1];
-
-err_get_training_status:
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "get training status failed: %d\n",
-			      ret);
-	return ret;
-}
-
-int cdns_mhdp_train_link(struct cdns_mhdp_device *mhdp)
-{
-	int ret;
-
-	ret = cdns_mhdp_training_start(mhdp);
-	if (ret) {
-		DRM_DEV_ERROR(mhdp->dev, "Failed to start training %d\n",
-			      ret);
-		return ret;
-	}
-
-	ret = cdns_mhdp_get_training_status(mhdp);
-	if (ret) {
-		DRM_DEV_ERROR(mhdp->dev, "Failed to get training stat %d\n",
-			      ret);
-		return ret;
-	}
-
-	DRM_DEV_DEBUG_KMS(mhdp->dev, "rate:0x%x, lanes:%d\n", mhdp->link.rate,
-			  mhdp->link.num_lanes);
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_train_link);
-
-int cdns_mhdp_set_video_status(struct cdns_mhdp_device *mhdp, int active)
-{
-	u8 msg;
-	int ret;
-
-	msg = !!active;
-
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				     DPTX_SET_VIDEO, sizeof(msg), &msg);
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "set video status failed: %d\n", ret);
-
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_set_video_status);
-
-static int cdns_mhdp_get_msa_misc(struct video_info *video,
-				  struct drm_display_mode *mode)
-{
-	u32 msa_misc;
-	u8 val[2] = {0};
-
-	switch (video->color_fmt) {
-	case PXL_RGB:
-	case Y_ONLY:
-		val[0] = 0;
-		break;
-	/* set YUV default color space conversion to BT601 */
-	case YCBCR_4_4_4:
-		val[0] = 6 + BT_601 * 8;
-		break;
-	case YCBCR_4_2_2:
-		val[0] = 5 + BT_601 * 8;
-		break;
-	case YCBCR_4_2_0:
-		val[0] = 5;
-		break;
-	}
-
-	switch (video->color_depth) {
-	case 6:
-		val[1] = 0;
-		break;
-	case 8:
-		val[1] = 1;
-		break;
-	case 10:
-		val[1] = 2;
-		break;
-	case 12:
-		val[1] = 3;
-		break;
-	case 16:
-		val[1] = 4;
-		break;
-	}
-
-	msa_misc = 2 * val[0] + 32 * val[1] +
-		   ((video->color_fmt == Y_ONLY) ? (1 << 14) : 0);
-
-	return msa_misc;
-}
-
-int cdns_mhdp_config_video(struct cdns_mhdp_device *mhdp)
-{
-	struct video_info *video = &mhdp->video_info;
-	struct drm_display_mode *mode = &mhdp->mode;
-	u64 symbol;
-	u32 val, link_rate, rem;
-	u8 bit_per_pix, tu_size_reg = TU_SIZE;
-	int ret;
-
-	bit_per_pix = (video->color_fmt == YCBCR_4_2_2) ?
-		      (video->color_depth * 2) : (video->color_depth * 3);
-
-	link_rate = drm_dp_bw_code_to_link_rate(mhdp->link.rate) / 1000;
-
-	ret = cdns_mhdp_reg_write(mhdp, BND_HSYNC2VSYNC, VIF_BYPASS_INTERLACE);
-	if (ret)
-		goto err_config_video;
-
-	ret = cdns_mhdp_reg_write(mhdp, HSYNC2VSYNC_POL_CTRL, 0);
-	if (ret)
-		goto err_config_video;
-
-	/*
-	 * get a best tu_size and valid symbol:
-	 * 1. chose Lclk freq(162Mhz, 270Mhz, 540Mhz), set TU to 32
-	 * 2. calculate VS(valid symbol) = TU * Pclk * Bpp / (Lclk * Lanes)
-	 * 3. if VS > *.85 or VS < *.1 or VS < 2 or TU < VS + 4, then set
-	 *    TU += 2 and repeat 2nd step.
-	 */
-	do {
-		tu_size_reg += 2;
-		symbol = tu_size_reg * mode->clock * bit_per_pix;
-		do_div(symbol, mhdp->link.num_lanes * link_rate * 8);
-		rem = do_div(symbol, 1000);
-		if (tu_size_reg > 64) {
-			ret = -EINVAL;
-			DRM_DEV_ERROR(mhdp->dev,
-				      "tu error, clk:%d, lanes:%d, rate:%d\n",
-				      mode->clock, mhdp->link.num_lanes,
-				      link_rate);
-			goto err_config_video;
-		}
-	} while ((symbol <= 1) || (tu_size_reg - symbol < 4) ||
-		 (rem > 850) || (rem < 100));
-
-	val = symbol + (tu_size_reg << 8);
-	val |= TU_CNT_RST_EN;
-	ret = cdns_mhdp_reg_write(mhdp, DP_FRAMER_TU, val);
-	if (ret)
-		goto err_config_video;
-
-	/* set the FIFO Buffer size */
-	val = div_u64(mode->clock * (symbol + 1), 1000) + link_rate;
-	val /= (mhdp->link.num_lanes * link_rate);
-	val = div_u64(8 * (symbol + 1), bit_per_pix) - val;
-	val += 2;
-	ret = cdns_mhdp_reg_write(mhdp, DP_VC_TABLE(15), val);
-
-	switch (video->color_depth) {
-	case 6:
-		val = BCS_6;
-		break;
-	case 8:
-		val = BCS_8;
-		break;
-	case 10:
-		val = BCS_10;
-		break;
-	case 12:
-		val = BCS_12;
-		break;
-	case 16:
-		val = BCS_16;
-		break;
-	}
-
-	val += video->color_fmt << 8;
-	ret = cdns_mhdp_reg_write(mhdp, DP_FRAMER_PXL_REPR, val);
-	if (ret)
-		goto err_config_video;
-
-	val = video->h_sync_polarity ? DP_FRAMER_SP_HSP : 0;
-	val |= video->v_sync_polarity ? DP_FRAMER_SP_VSP : 0;
-	ret = cdns_mhdp_reg_write(mhdp, DP_FRAMER_SP, val);
-	if (ret)
-		goto err_config_video;
-
-	val = (mode->hsync_start - mode->hdisplay) << 16;
-	val |= mode->htotal - mode->hsync_end;
-	ret = cdns_mhdp_reg_write(mhdp, DP_FRONT_BACK_PORCH, val);
-	if (ret)
-		goto err_config_video;
-
-	val = mode->hdisplay * bit_per_pix / 8;
-	ret = cdns_mhdp_reg_write(mhdp, DP_BYTE_COUNT, val);
-	if (ret)
-		goto err_config_video;
-
-	val = mode->htotal | ((mode->htotal - mode->hsync_start) << 16);
-	ret = cdns_mhdp_reg_write(mhdp, MSA_HORIZONTAL_0, val);
-	if (ret)
-		goto err_config_video;
-
-	val = mode->hsync_end - mode->hsync_start;
-	val |= (mode->hdisplay << 16) | (video->h_sync_polarity << 15);
-	ret = cdns_mhdp_reg_write(mhdp, MSA_HORIZONTAL_1, val);
-	if (ret)
-		goto err_config_video;
-
-	val = mode->vtotal;
-	val |= (mode->vtotal - mode->vsync_start) << 16;
-	ret = cdns_mhdp_reg_write(mhdp, MSA_VERTICAL_0, val);
-	if (ret)
-		goto err_config_video;
-
-	val = mode->vsync_end - mode->vsync_start;
-	val |= (mode->vdisplay << 16) | (video->v_sync_polarity << 15);
-	ret = cdns_mhdp_reg_write(mhdp, MSA_VERTICAL_1, val);
-	if (ret)
-		goto err_config_video;
-
-	val = cdns_mhdp_get_msa_misc(video, mode);
-	ret = cdns_mhdp_reg_write(mhdp, MSA_MISC, val);
-	if (ret)
-		goto err_config_video;
-
-	ret = cdns_mhdp_reg_write(mhdp, STREAM_CONFIG, 1);
-	if (ret)
-		goto err_config_video;
-
-	val = mode->hsync_end - mode->hsync_start;
-	val |= mode->hdisplay << 16;
-	ret = cdns_mhdp_reg_write(mhdp, DP_HORIZONTAL, val);
-	if (ret)
-		goto err_config_video;
-
-	val = mode->vdisplay;
-	val |= (mode->vtotal - mode->vsync_start) << 16;
-	ret = cdns_mhdp_reg_write(mhdp, DP_VERTICAL_0, val);
-	if (ret)
-		goto err_config_video;
-
-	val = mode->vtotal;
-	ret = cdns_mhdp_reg_write(mhdp, DP_VERTICAL_1, val);
-	if (ret)
-		goto err_config_video;
-
-	ret = cdns_mhdp_reg_write_bit(mhdp, DP_VB_ID, 2, 1, 0);
-
-err_config_video:
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "config video failed: %d\n", ret);
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_config_video);
-
-int cdns_mhdp_audio_stop(struct cdns_mhdp_device *mhdp,
-			 struct audio_info *audio)
-{
-	int ret;
-
-	ret = cdns_mhdp_reg_write(mhdp, AUDIO_PACK_CONTROL, 0);
-	if (ret) {
-		DRM_DEV_ERROR(mhdp->dev, "audio stop failed: %d\n", ret);
-		return ret;
-	}
-
-	writel(0, mhdp->regs + SPDIF_CTRL_ADDR);
-
-	/* clearn the audio config and reset */
-	writel(0, mhdp->regs + AUDIO_SRC_CNTL);
-	writel(0, mhdp->regs + AUDIO_SRC_CNFG);
-	writel(AUDIO_SW_RST, mhdp->regs + AUDIO_SRC_CNTL);
-	writel(0, mhdp->regs + AUDIO_SRC_CNTL);
-
-	/* reset smpl2pckt component  */
-	writel(0, mhdp->regs + SMPL2PKT_CNTL);
-	writel(AUDIO_SW_RST, mhdp->regs + SMPL2PKT_CNTL);
-	writel(0, mhdp->regs + SMPL2PKT_CNTL);
-
-	/* reset FIFO */
-	writel(AUDIO_SW_RST, mhdp->regs + FIFO_CNTL);
-	writel(0, mhdp->regs + FIFO_CNTL);
-
-	if (audio->format == AFMT_SPDIF)
-		clk_disable_unprepare(mhdp->spdif_clk);
-
-	return 0;
-}
-EXPORT_SYMBOL(cdns_mhdp_audio_stop);
-
-int cdns_mhdp_audio_mute(struct cdns_mhdp_device *mhdp, bool enable)
-{
-	int ret;
-
-	ret = cdns_mhdp_reg_write_bit(mhdp, DP_VB_ID, 4, 1, enable);
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "audio mute failed: %d\n", ret);
-
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_audio_mute);
-
-static void cdns_mhdp_audio_config_i2s(struct cdns_mhdp_device *mhdp,
-				       struct audio_info *audio)
-{
-	int sub_pckt_num = 1, i2s_port_en_val = 0xf, i;
-	u32 val;
-
-	if (audio->channels == 2) {
-		if (mhdp->link.num_lanes == 1)
-			sub_pckt_num = 2;
-		else
-			sub_pckt_num = 4;
-
-		i2s_port_en_val = 1;
-	} else if (audio->channels == 4) {
-		i2s_port_en_val = 3;
-	}
-
-	writel(0x0, mhdp->regs + SPDIF_CTRL_ADDR);
-
-	writel(SYNC_WR_TO_CH_ZERO, mhdp->regs + FIFO_CNTL);
-
-	val = MAX_NUM_CH(audio->channels);
-	val |= NUM_OF_I2S_PORTS(audio->channels);
-	val |= AUDIO_TYPE_LPCM;
-	val |= CFG_SUB_PCKT_NUM(sub_pckt_num);
-	writel(val, mhdp->regs + SMPL2PKT_CNFG);
-
-	if (audio->sample_width == 16)
-		val = 0;
-	else if (audio->sample_width == 24)
-		val = 1 << 9;
-	else
-		val = 2 << 9;
-
-	val |= AUDIO_CH_NUM(audio->channels);
-	val |= I2S_DEC_PORT_EN(i2s_port_en_val);
-	val |= TRANS_SMPL_WIDTH_32;
-	writel(val, mhdp->regs + AUDIO_SRC_CNFG);
-
-	for (i = 0; i < (audio->channels + 1) / 2; i++) {
-		if (audio->sample_width == 16)
-			val = (0x02 << 8) | (0x02 << 20);
-		else if (audio->sample_width == 24)
-			val = (0x0b << 8) | (0x0b << 20);
-
-		val |= ((2 * i) << 4) | ((2 * i + 1) << 16);
-		writel(val, mhdp->regs + STTS_BIT_CH(i));
-	}
-
-	switch (audio->sample_rate) {
-	case 32000:
-		val = SAMPLING_FREQ(3) |
-		      ORIGINAL_SAMP_FREQ(0xc);
-		break;
-	case 44100:
-		val = SAMPLING_FREQ(0) |
-		      ORIGINAL_SAMP_FREQ(0xf);
-		break;
-	case 48000:
-		val = SAMPLING_FREQ(2) |
-		      ORIGINAL_SAMP_FREQ(0xd);
-		break;
-	case 88200:
-		val = SAMPLING_FREQ(8) |
-		      ORIGINAL_SAMP_FREQ(0x7);
-		break;
-	case 96000:
-		val = SAMPLING_FREQ(0xa) |
-		      ORIGINAL_SAMP_FREQ(5);
-		break;
-	case 176400:
-		val = SAMPLING_FREQ(0xc) |
-		      ORIGINAL_SAMP_FREQ(3);
-		break;
-	case 192000:
-		val = SAMPLING_FREQ(0xe) |
-		      ORIGINAL_SAMP_FREQ(1);
-		break;
-	}
-	val |= 4;
-	writel(val, mhdp->regs + COM_CH_STTS_BITS);
-
-	writel(SMPL2PKT_EN, mhdp->regs + SMPL2PKT_CNTL);
-	writel(I2S_DEC_START, mhdp->regs + AUDIO_SRC_CNTL);
-}
-
-static void cdns_mhdp_audio_config_spdif(struct cdns_mhdp_device *mhdp)
-{
-	u32 val;
-
-	writel(SYNC_WR_TO_CH_ZERO, mhdp->regs + FIFO_CNTL);
-
-	val = MAX_NUM_CH(2) | AUDIO_TYPE_LPCM | CFG_SUB_PCKT_NUM(4);
-	writel(val, mhdp->regs + SMPL2PKT_CNFG);
-	writel(SMPL2PKT_EN, mhdp->regs + SMPL2PKT_CNTL);
-
-	val = SPDIF_ENABLE | SPDIF_AVG_SEL | SPDIF_JITTER_BYPASS;
-	writel(val, mhdp->regs + SPDIF_CTRL_ADDR);
-
-	clk_prepare_enable(mhdp->spdif_clk);
-	clk_set_rate(mhdp->spdif_clk, CDNS_DP_SPDIF_CLK);
-}
-
-int cdns_mhdp_audio_config(struct cdns_mhdp_device *mhdp,
-			   struct audio_info *audio)
-{
-	int ret;
-
-	/* reset the spdif clk before config */
-	if (audio->format == AFMT_SPDIF) {
-		reset_control_assert(mhdp->spdif_rst);
-		reset_control_deassert(mhdp->spdif_rst);
-	}
-
-	ret = cdns_mhdp_reg_write(mhdp, CM_LANE_CTRL, LANE_REF_CYC);
-	if (ret)
-		goto err_audio_config;
-
-	ret = cdns_mhdp_reg_write(mhdp, CM_CTRL, 0);
-	if (ret)
-		goto err_audio_config;
-
-	if (audio->format == AFMT_I2S)
-		cdns_mhdp_audio_config_i2s(mhdp, audio);
-	else if (audio->format == AFMT_SPDIF)
-		cdns_mhdp_audio_config_spdif(mhdp);
-
-	ret = cdns_mhdp_reg_write(mhdp, AUDIO_PACK_CONTROL, AUDIO_PACK_EN);
-
-err_audio_config:
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "audio config failed: %d\n", ret);
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_audio_config);
-
-int cdns_mhdp_adjust_lt(struct cdns_mhdp_device *mhdp,
-			u8 nlanes, u16 udelay, u8 *lanes_data, u8 *dpcd)
-{
-	u8 payload[7];
-	u8 hdr[5]; /* For DPCD read response header */
-	u32 addr;
-	u8 const nregs = 6; /* Registers 0x202-0x207 */
-	int ret;
-
-	if (nlanes != 4 && nlanes != 2 && nlanes != 1) {
-		DRM_DEV_ERROR(mhdp->dev, "invalid number of lanes: %d\n",
-			      nlanes);
-		ret = -EINVAL;
-		goto err_adjust_lt;
-	}
-
-	payload[0] = nlanes;
-	put_unaligned_be16(udelay, payload + 1);
-	memcpy(payload + 3, lanes_data, nlanes);
-
-	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
-				     DPTX_ADJUST_LT,
-				     sizeof(payload), payload);
-	if (ret)
-		goto err_adjust_lt;
-
-	/* Yes, read the DPCD read command response */
-	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_DP_TX,
-						 DPTX_READ_DPCD,
-						 sizeof(hdr) + nregs);
-	if (ret)
-		goto err_adjust_lt;
-
-	ret = cdns_mhdp_mailbox_read_receive(mhdp, hdr, sizeof(hdr));
-	if (ret)
-		goto err_adjust_lt;
-
-	addr = get_unaligned_be24(hdr + 2);
-	if (addr != DP_LANE0_1_STATUS)
-		goto err_adjust_lt;
-
-	ret = cdns_mhdp_mailbox_read_receive(mhdp, dpcd, nregs);
-
-err_adjust_lt:
-	if (ret)
-		DRM_DEV_ERROR(mhdp->dev, "Failed to adjust Link Training.\n");
-
-	return ret;
-}
-EXPORT_SYMBOL(cdns_mhdp_adjust_lt);

drivers/gpu/drm/bridge/cdns-mhdp-j721e.h

@@ -14,7 +14,7 @@
 #define CDNS_MHDP_J721E_H
 
 #include <linux/platform_device.h>
-#include <drm/bridge/cdns-mhdp-common.h>
+#include "cdns-mhdp.h"
 
 struct cdns_mhdp_j721e_wrap;
 

drivers/gpu/drm/bridge/cdns-mhdp.c

@@ -20,7 +20,6 @@
 #include <linux/phy/phy.h>
 #include <linux/phy/phy-dp.h>
 
-#include <drm/bridge/cdns-mhdp-common.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_connector.h>
@@ -33,9 +32,501 @@
 #include <linux/irq.h>
 #include <linux/of_irq.h>
 
+#include <asm/unaligned.h>
+
 #include "cdns-mhdp.h"
 #include "cdns-mhdp-j721e.h"
 
+/* CDNS MHDP Helpers */
+#define MAILBOX_RETRY_US		1000
+#define MAILBOX_TIMEOUT_US		5000000
+
+/* mailbox */
+#define MB_OPCODE_ID			0
+#define MB_MODULE_ID			1
+#define MB_SIZE_MSB_ID			2
+#define MB_SIZE_LSB_ID			3
+#define MB_DATA_ID			4
+
+#define MB_MODULE_ID_DP_TX		0x01
+#define MB_MODULE_ID_HDCP_TX		0x07
+#define MB_MODULE_ID_HDCP_RX		0x08
+#define MB_MODULE_ID_HDCP_GENERAL	0x09
+#define MB_MODULE_ID_GENERAL		0x0a
+
+/* general opcode */
+#define GENERAL_MAIN_CONTROL		0x01
+#define GENERAL_TEST_ECHO		0x02
+#define GENERAL_BUS_SETTINGS		0x03
+#define GENERAL_TEST_ACCESS		0x04
+#define GENERAL_REGISTER_READ		0x07
+
+#define DPTX_SET_POWER_MNG			0x00
+#define DPTX_SET_HOST_CAPABILITIES		0x01
+#define DPTX_GET_EDID				0x02
+#define DPTX_READ_DPCD				0x03
+#define DPTX_WRITE_DPCD				0x04
+#define DPTX_ENABLE_EVENT			0x05
+#define DPTX_WRITE_REGISTER			0x06
+#define DPTX_READ_REGISTER			0x07
+#define DPTX_WRITE_FIELD			0x08
+#define DPTX_TRAINING_CONTROL			0x09
+#define DPTX_READ_EVENT				0x0a
+#define DPTX_READ_LINK_STAT			0x0b
+#define DPTX_SET_VIDEO				0x0c
+#define DPTX_SET_AUDIO				0x0d
+#define DPTX_GET_LAST_AUX_STAUS			0x0e
+#define DPTX_SET_LINK_BREAK_POINT		0x0f
+#define DPTX_FORCE_LANES			0x10
+#define DPTX_HPD_STATE				0x11
+#define DPTX_ADJUST_LT				0x12
+
+#define FW_STANDBY				0
+#define FW_ACTIVE				1
+
+static inline u32 get_unaligned_be24(const void *p)
+{
+	const u8 *_p = p;
+
+	return _p[0] << 16 | _p[1] << 8 | _p[2];
+}
+
+static inline void put_unaligned_be24(u32 val, void *p)
+{
+	u8 *_p = p;
+
+	_p[0] = val >> 16;
+	_p[1] = val >> 8;
+	_p[2] = val;
+}
+
+static int cdns_mhdp_mailbox_read(struct cdns_mhdp_device *mhdp)
+{
+	int val, ret;
+
+	ret = readx_poll_timeout(readl, mhdp->regs + CDNS_MAILBOX_EMPTY,
+				 val, !val, MAILBOX_RETRY_US,
+				 MAILBOX_TIMEOUT_US);
+	if (ret < 0)
+		return ret;
+
+	return readl(mhdp->regs + CDNS_MAILBOX_RX_DATA) & 0xff;
+}
+
+static int cdp_dp_mailbox_write(struct cdns_mhdp_device *mhdp, u8 val)
+{
+	int ret, full;
+
+	ret = readx_poll_timeout(readl, mhdp->regs + CDNS_MAILBOX_FULL,
+				 full, !full, MAILBOX_RETRY_US,
+				 MAILBOX_TIMEOUT_US);
+	if (ret < 0)
+		return ret;
+
+	writel(val, mhdp->regs + CDNS_MAILBOX_TX_DATA);
+
+	return 0;
+}
+
+static int cdns_mhdp_mailbox_validate_receive(struct cdns_mhdp_device *mhdp,
+					      u8 module_id, u8 opcode,
+					      u16 req_size)
+{
+	u32 mbox_size, i;
+	u8 header[4];
+	int ret;
+
+	/* read the header of the message */
+	for (i = 0; i < 4; i++) {
+		ret = cdns_mhdp_mailbox_read(mhdp);
+		if (ret < 0)
+			return ret;
+
+		header[i] = ret;
+	}
+
+	mbox_size = get_unaligned_be16(header + 2);
+
+	if (opcode != header[0] || module_id != header[1] ||
+	    req_size != mbox_size) {
+		/*
+		 * If the message in mailbox is not what we want, we need to
+		 * clear the mailbox by reading its contents.
+		 */
+		for (i = 0; i < mbox_size; i++)
+			if (cdns_mhdp_mailbox_read(mhdp) < 0)
+				break;
+
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int cdns_mhdp_mailbox_read_receive(struct cdns_mhdp_device *mhdp,
+					  u8 *buff, u16 buff_size)
+{
+	u32 i;
+	int ret;
+
+	for (i = 0; i < buff_size; i++) {
+		ret = cdns_mhdp_mailbox_read(mhdp);
+		if (ret < 0)
+			return ret;
+
+		buff[i] = ret;
+	}
+
+	return 0;
+}
+
+static int cdns_mhdp_mailbox_send(struct cdns_mhdp_device *mhdp, u8 module_id,
+				  u8 opcode, u16 size, u8 *message)
+{
+	u8 header[4];
+	int ret, i;
+
+	header[0] = opcode;
+	header[1] = module_id;
+	put_unaligned_be16(size, header + 2);
+
+	for (i = 0; i < 4; i++) {
+		ret = cdp_dp_mailbox_write(mhdp, header[i]);
+		if (ret)
+			return ret;
+	}
+
+	for (i = 0; i < size; i++) {
+		ret = cdp_dp_mailbox_write(mhdp, message[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static
+int cdns_mhdp_reg_read(struct cdns_mhdp_device *mhdp, u32 addr, u32 *value)
+{
+	u8 msg[4], resp[8];
+	int ret;
+
+	if (addr == 0) {
+		ret = -EINVAL;
+		goto err_reg_read;
+	}
+
+	put_unaligned_be32(addr, msg);
+
+	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_GENERAL,
+				     GENERAL_REGISTER_READ,
+				     sizeof(msg), msg);
+	if (ret)
+		goto err_reg_read;
+
+	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_GENERAL,
+						 GENERAL_REGISTER_READ,
+						 sizeof(resp));
+	if (ret)
+		goto err_reg_read;
+
+	ret = cdns_mhdp_mailbox_read_receive(mhdp, resp, sizeof(resp));
+	if (ret)
+		goto err_reg_read;
+
+	/* Returned address value should be the same as requested */
+	if (memcmp(msg, resp, sizeof(msg))) {
+		ret = -EINVAL;
+		goto err_reg_read;
+	}
+
+	*value = get_unaligned_be32(resp + 4);
+
+err_reg_read:
+	if (ret) {
+		DRM_DEV_ERROR(mhdp->dev, "Failed to read register.\n");
+		*value = 0;
+	}
+
+	return ret;
+}
+
+static
+int cdns_mhdp_reg_write(struct cdns_mhdp_device *mhdp, u16 addr, u32 val)
+{
+	u8 msg[6];
+
+	put_unaligned_be16(addr, msg);
+	put_unaligned_be32(val, msg + 2);
+
+	return cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+				      DPTX_WRITE_REGISTER, sizeof(msg), msg);
+}
+
+static
+int cdns_mhdp_reg_write_bit(struct cdns_mhdp_device *mhdp, u16 addr,
+			    u8 start_bit, u8 bits_no, u32 val)
+{
+	u8 field[8];
+
+	put_unaligned_be16(addr, field);
+	field[2] = start_bit;
+	field[3] = bits_no;
+	put_unaligned_be32(val, field + 4);
+
+	return cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+				      DPTX_WRITE_FIELD, sizeof(field), field);
+}
+
+static
+int cdns_mhdp_dpcd_read(struct cdns_mhdp_device *mhdp,
+			u32 addr, u8 *data, u16 len)
+{
+	u8 msg[5], reg[5];
+	int ret;
+
+	put_unaligned_be16(len, msg);
+	put_unaligned_be24(addr, msg + 2);
+
+	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+				     DPTX_READ_DPCD, sizeof(msg), msg);
+	if (ret)
+		goto err_dpcd_read;
+
+	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_DP_TX,
+						 DPTX_READ_DPCD,
+						 sizeof(reg) + len);
+	if (ret)
+		goto err_dpcd_read;
+
+	ret = cdns_mhdp_mailbox_read_receive(mhdp, reg, sizeof(reg));
+	if (ret)
+		goto err_dpcd_read;
+
+	ret = cdns_mhdp_mailbox_read_receive(mhdp, data, len);
+
+err_dpcd_read:
+	return ret;
+}
+
+static
+int cdns_mhdp_dpcd_write(struct cdns_mhdp_device *mhdp, u32 addr, u8 value)
+{
+	u8 msg[6], reg[5];
+	int ret;
+
+	put_unaligned_be16(1, msg);
+	put_unaligned_be24(addr, msg + 2);
+	msg[5] = value;
+
+	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+				     DPTX_WRITE_DPCD, sizeof(msg), msg);
+	if (ret)
+		goto err_dpcd_write;
+
+	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_DP_TX,
+						 DPTX_WRITE_DPCD, sizeof(reg));
+	if (ret)
+		goto err_dpcd_write;
+
+	ret = cdns_mhdp_mailbox_read_receive(mhdp, reg, sizeof(reg));
+	if (ret)
+		goto err_dpcd_write;
+
+	if (addr != get_unaligned_be24(reg + 2))
+		ret = -EINVAL;
+
+err_dpcd_write:
+	if (ret)
+		DRM_DEV_ERROR(mhdp->dev, "dpcd write failed: %d\n", ret);
+	return ret;
+}
+
+static
+int cdns_mhdp_set_firmware_active(struct cdns_mhdp_device *mhdp, bool enable)
+{
+	u8 msg[5];
+	int ret, i;
+
+	msg[0] = GENERAL_MAIN_CONTROL;
+	msg[1] = MB_MODULE_ID_GENERAL;
+	msg[2] = 0;
+	msg[3] = 1;
+	msg[4] = enable ? FW_ACTIVE : FW_STANDBY;
+
+	for (i = 0; i < sizeof(msg); i++) {
+		ret = cdp_dp_mailbox_write(mhdp, msg[i]);
+		if (ret)
+			goto err_set_firmware_active;
+	}
+
+	/* read the firmware state */
+	for (i = 0; i < sizeof(msg); i++)  {
+		ret = cdns_mhdp_mailbox_read(mhdp);
+		if (ret < 0)
+			goto err_set_firmware_active;
+
+		msg[i] = ret;
+	}
+
+	ret = 0;
+
+err_set_firmware_active:
+	if (ret < 0)
+		DRM_DEV_ERROR(mhdp->dev, "set firmware active failed\n");
+	return ret;
+}
+
+static
+int cdns_mhdp_get_hpd_status(struct cdns_mhdp_device *mhdp)
+{
+	u8 status;
+	int ret;
+
+	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+				     DPTX_HPD_STATE, 0, NULL);
+	if (ret)
+		goto err_get_hpd;
+
+	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_DP_TX,
+						 DPTX_HPD_STATE,
+						 sizeof(status));
+	if (ret)
+		goto err_get_hpd;
+
+	ret = cdns_mhdp_mailbox_read_receive(mhdp, &status, sizeof(status));
+	if (ret)
+		goto err_get_hpd;
+
+	return status;
+
+err_get_hpd:
+	DRM_DEV_ERROR(mhdp->dev, "get hpd status failed: %d\n", ret);
+	return ret;
+}
+
+static
+int cdns_mhdp_get_edid_block(void *data, u8 *edid,
+			     unsigned int block, size_t length)
+{
+	struct cdns_mhdp_device *mhdp = data;
+	u8 msg[2], reg[2], i;
+	int ret;
+
+	for (i = 0; i < 4; i++) {
+		msg[0] = block / 2;
+		msg[1] = block % 2;
+
+		ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+					     DPTX_GET_EDID, sizeof(msg), msg);
+		if (ret)
+			continue;
+
+		ret = cdns_mhdp_mailbox_validate_receive(mhdp,
+							 MB_MODULE_ID_DP_TX,
+							 DPTX_GET_EDID,
+							 sizeof(reg) + length);
+		if (ret)
+			continue;
+
+		ret = cdns_mhdp_mailbox_read_receive(mhdp, reg, sizeof(reg));
+		if (ret)
+			continue;
+
+		ret = cdns_mhdp_mailbox_read_receive(mhdp, edid, length);
+		if (ret)
+			continue;
+
+		if (reg[0] == length && reg[1] == block / 2)
+			break;
+	}
+
+	if (ret)
+		DRM_DEV_ERROR(mhdp->dev, "get block[%d] edid failed: %d\n",
+			      block, ret);
+
+	return ret;
+}
+
+static __maybe_unused
+int cdns_mhdp_read_event(struct cdns_mhdp_device *mhdp)
+{
+	u8 event = 0;
+	int ret;
+
+	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+				     DPTX_READ_EVENT, 0, NULL);
+	if (ret)
+		return ret;
+
+	ret = cdns_mhdp_mailbox_validate_receive(mhdp,
+						 MB_MODULE_ID_DP_TX,
+						 DPTX_READ_EVENT,
+						 sizeof(event));
+	if (ret < 0)
+		return ret;
+
+	ret = cdns_mhdp_mailbox_read_receive(mhdp, &event,
+					     sizeof(event));
+	if (ret < 0)
+		return ret;
+
+	return event;
+}
+
+static
+int cdns_mhdp_adjust_lt(struct cdns_mhdp_device *mhdp,
+			u8 nlanes, u16 udelay, u8 *lanes_data, u8 *dpcd)
+{
+	u8 payload[7];
+	u8 hdr[5]; /* For DPCD read response header */
+	u32 addr;
+	u8 const nregs = 6; /* Registers 0x202-0x207 */
+	int ret;
+
+	if (nlanes != 4 && nlanes != 2 && nlanes != 1) {
+		DRM_DEV_ERROR(mhdp->dev, "invalid number of lanes: %d\n",
+			      nlanes);
+		ret = -EINVAL;
+		goto err_adjust_lt;
+	}
+
+	payload[0] = nlanes;
+	put_unaligned_be16(udelay, payload + 1);
+	memcpy(payload + 3, lanes_data, nlanes);
+
+	ret = cdns_mhdp_mailbox_send(mhdp, MB_MODULE_ID_DP_TX,
+				     DPTX_ADJUST_LT,
+				     sizeof(payload), payload);
+	if (ret)
+		goto err_adjust_lt;
+
+	/* Yes, read the DPCD read command response */
+	ret = cdns_mhdp_mailbox_validate_receive(mhdp, MB_MODULE_ID_DP_TX,
+						 DPTX_READ_DPCD,
+						 sizeof(hdr) + nregs);
+	if (ret)
+		goto err_adjust_lt;
+
+	ret = cdns_mhdp_mailbox_read_receive(mhdp, hdr, sizeof(hdr));
+	if (ret)
+		goto err_adjust_lt;
+
+	addr = get_unaligned_be24(hdr + 2);
+	if (addr != DP_LANE0_1_STATUS)
+		goto err_adjust_lt;
+
+	ret = cdns_mhdp_mailbox_read_receive(mhdp, dpcd, nregs);
+
+err_adjust_lt:
+	if (ret)
+		DRM_DEV_ERROR(mhdp->dev, "Failed to adjust Link Training.\n");
+
+	return ret;
+}
+
+/* EOF CDNS MHDP Helpers */
+
 #define FW_NAME					"cadence/mhdp8546.bin"
 #define CDNS_MHDP_IMEM				0x10000
 
@@ -1301,10 +1792,8 @@ static int mhdp_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	mhdp->bridge.connector = &mhdp->connector;
 	mhdp->connector.bridge = &mhdp->bridge;
 	mhdp->bridge.mhdp = mhdp;
-	mhdp->bridge.is_active = false;
 
 	drm_bridge_add(&mhdp->bridge.base);
 

drivers/gpu/drm/bridge/cdns-mhdp.h

@@ -11,6 +11,10 @@
 #ifndef CDNS_MHDP_H
 #define CDNS_MHDP_H
 
+#include <drm/drm_bridge.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_dp_helper.h>
+
 #define CDNS_APB_CFG				0x00000
 #define CDNS_APB_CTRL				(CDNS_APB_CFG + 0x00)
 #define CDNS_CPU_STALL				BIT(3)
@@ -181,6 +185,67 @@
 #define CDNS_DP_LANE_EN_LANES(x)		GENMASK(x - 1, 0)
 #define CDNS_DP_ENHNCD				(CDNS_DPTX_GLOBAL + 0x04)
 
+struct cdns_mhdp_host {
+	unsigned int link_rate;
+	u8 lanes_cnt;
+	u8 volt_swing;
+	u8 pre_emphasis;
+	u8 pattern_supp;
+	u8 lane_mapping;
+	u8 fast_link : 1;
+	u8 enhanced : 1;
+	u8 scrambler : 1;
+	u8 ssc : 1;
+};
+
+struct cdns_mhdp_sink {
+	unsigned int link_rate;
+	u8 lanes_cnt;
+	u8 pattern_supp;
+	u8 fast_link;
+	u8 enhanced;
+};
+
+struct cdns_mhdp_display_fmt {
+	u32 color_format;
+	u32 bpc;
+	u8 y_only : 1;
+};
+
+struct cdns_mhdp_bridge;
+struct cdns_mhdp_connector;
+
+struct cdns_mhdp_bridge {
+	struct cdns_mhdp_device *mhdp;
+	struct drm_bridge base;
+	s8 stream_id;
+};
+
+struct cdns_mhdp_connector {
+	struct drm_connector base;
+	struct cdns_mhdp_bridge *bridge;
+};
+
+struct cdns_mhdp_device {
+	void __iomem *regs;
+	void __iomem *j721e_regs;
+
+	struct device *dev;
+	struct clk *clk;
+
+	struct drm_dp_link link;
+	struct cdns_mhdp_connector connector;
+
+	struct drm_dp_aux aux;
+	struct cdns_mhdp_host host;
+	struct cdns_mhdp_sink sink;
+	struct cdns_mhdp_display_fmt display_fmt;
+	struct cdns_mhdp_bridge bridge;
+	struct phy *phy;
+
+	u8 link_up : 1;
+	u8 plugged : 1;
+};
 
 #define to_mhdp_connector(x) container_of(x, struct cdns_mhdp_connector, base)
 #define to_mhdp_bridge(x) container_of(x, struct cdns_mhdp_bridge, base)

include/drm/bridge/cdns-mhdp-common.h

@@ -1,604 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
- * Author: Chris Zhong <zyw@rock-chips.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- */
-
-#ifndef CDNS_MHDP_COMMON_H_
-#define CDNS_MHDP_COMMON_H_
-
-#include <drm/drm_bridge.h>
-#include <drm/drm_connector.h>
-#include <drm/drm_dp_helper.h>
-
-#include <linux/bitops.h>
-
-#define ADDR_IMEM		0x10000
-#define ADDR_DMEM		0x20000
-
-/* APB CFG addr */
-#define APB_CTRL			0
-#define XT_INT_CTRL			0x04
-#define MAILBOX_FULL_ADDR		0x08
-#define MAILBOX_EMPTY_ADDR		0x0c
-#define MAILBOX0_WR_DATA		0x10
-#define MAILBOX0_RD_DATA		0x14
-#define KEEP_ALIVE			0x18
-#define VER_L				0x1c
-#define VER_H				0x20
-#define VER_LIB_L_ADDR			0x24
-#define VER_LIB_H_ADDR			0x28
-#define SW_DEBUG_L			0x2c
-#define SW_DEBUG_H			0x30
-#define MAILBOX_INT_MASK		0x34
-#define MAILBOX_INT_STATUS		0x38
-#define SW_CLK_L			0x3c
-#define SW_CLK_H			0x40
-#define SW_EVENTS0			0x44
-#define SW_EVENTS1			0x48
-#define SW_EVENTS2			0x4c
-#define SW_EVENTS3			0x50
-#define XT_OCD_CTRL			0x60
-#define APB_INT_MASK			0x6c
-#define APB_STATUS_MASK			0x70
-
-/* audio decoder addr */
-#define AUDIO_SRC_CNTL			0x30000
-#define AUDIO_SRC_CNFG			0x30004
-#define COM_CH_STTS_BITS		0x30008
-#define STTS_BIT_CH(x)			(0x3000c + ((x) << 2))
-#define SPDIF_CTRL_ADDR			0x3004c
-#define SPDIF_CH1_CS_3100_ADDR		0x30050
-#define SPDIF_CH1_CS_6332_ADDR		0x30054
-#define SPDIF_CH1_CS_9564_ADDR		0x30058
-#define SPDIF_CH1_CS_12796_ADDR		0x3005c
-#define SPDIF_CH1_CS_159128_ADDR	0x30060
-#define SPDIF_CH1_CS_191160_ADDR	0x30064
-#define SPDIF_CH2_CS_3100_ADDR		0x30068
-#define SPDIF_CH2_CS_6332_ADDR		0x3006c
-#define SPDIF_CH2_CS_9564_ADDR		0x30070
-#define SPDIF_CH2_CS_12796_ADDR		0x30074
-#define SPDIF_CH2_CS_159128_ADDR	0x30078
-#define SPDIF_CH2_CS_191160_ADDR	0x3007c
-#define SMPL2PKT_CNTL			0x30080
-#define SMPL2PKT_CNFG			0x30084
-#define FIFO_CNTL			0x30088
-#define FIFO_STTS			0x3008c
-
-/* source pif addr */
-#define SOURCE_PIF_WR_ADDR		0x30800
-#define SOURCE_PIF_WR_REQ		0x30804
-#define SOURCE_PIF_RD_ADDR		0x30808
-#define SOURCE_PIF_RD_REQ		0x3080c
-#define SOURCE_PIF_DATA_WR		0x30810
-#define SOURCE_PIF_DATA_RD		0x30814
-#define SOURCE_PIF_FIFO1_FLUSH		0x30818
-#define SOURCE_PIF_FIFO2_FLUSH		0x3081c
-#define SOURCE_PIF_STATUS		0x30820
-#define SOURCE_PIF_INTERRUPT_SOURCE	0x30824
-#define SOURCE_PIF_INTERRUPT_MASK	0x30828
-#define SOURCE_PIF_PKT_ALLOC_REG	0x3082c
-#define SOURCE_PIF_PKT_ALLOC_WR_EN	0x30830
-#define SOURCE_PIF_SW_RESET		0x30834
-
-/* bellow registers need access by mailbox */
-/* source car addr */
-#define SOURCE_HDTX_CAR			0x0900
-#define SOURCE_DPTX_CAR			0x0904
-#define SOURCE_PHY_CAR			0x0908
-#define SOURCE_CEC_CAR			0x090c
-#define SOURCE_CBUS_CAR			0x0910
-#define SOURCE_PKT_CAR			0x0918
-#define SOURCE_AIF_CAR			0x091c
-#define SOURCE_CIPHER_CAR		0x0920
-#define SOURCE_CRYPTO_CAR		0x0924
-
-/* clock meters addr */
-#define CM_CTRL				0x0a00
-#define CM_I2S_CTRL			0x0a04
-#define CM_SPDIF_CTRL			0x0a08
-#define CM_VID_CTRL			0x0a0c
-#define CM_LANE_CTRL			0x0a10
-#define I2S_NM_STABLE			0x0a14
-#define I2S_NCTS_STABLE			0x0a18
-#define SPDIF_NM_STABLE			0x0a1c
-#define SPDIF_NCTS_STABLE		0x0a20
-#define NMVID_MEAS_STABLE		0x0a24
-#define I2S_MEAS			0x0a40
-#define SPDIF_MEAS			0x0a80
-#define NMVID_MEAS			0x0ac0
-
-/* source vif addr */
-#define BND_HSYNC2VSYNC			0x0b00
-#define HSYNC2VSYNC_F1_L1		0x0b04
-#define HSYNC2VSYNC_F2_L1		0x0b08
-#define HSYNC2VSYNC_STATUS		0x0b0c
-#define HSYNC2VSYNC_POL_CTRL		0x0b10
-
-/* dptx phy addr */
-#define DP_TX_PHY_CONFIG_REG		0x2000
-#define DP_TX_PHY_SW_RESET		0x2004
-#define DP_TX_PHY_SCRAMBLER_SEED	0x2008
-#define DP_TX_PHY_TRAINING_01_04	0x200c
-#define DP_TX_PHY_TRAINING_05_08	0x2010
-#define DP_TX_PHY_TRAINING_09_10	0x2014
-#define TEST_COR			0x23fc
-
-/* dptx hpd addr */
-#define HPD_IRQ_DET_MIN_TIMER		0x2100
-#define HPD_IRQ_DET_MAX_TIMER		0x2104
-#define HPD_UNPLGED_DET_MIN_TIMER	0x2108
-#define HPD_STABLE_TIMER		0x210c
-#define HPD_FILTER_TIMER		0x2110
-#define HPD_EVENT_MASK			0x211c
-#define HPD_EVENT_DET			0x2120
-
-/* dpyx framer addr */
-#define DP_FRAMER_GLOBAL_CONFIG		0x2200
-#define DP_SW_RESET			0x2204
-#define DP_FRAMER_TU			0x2208
-#define DP_FRAMER_PXL_REPR		0x220c
-#define DP_FRAMER_SP			0x2210
-#define AUDIO_PACK_CONTROL		0x2214
-#define DP_VC_TABLE(x)			(0x2218 + ((x) << 2))
-#define DP_VB_ID			0x2258
-#define DP_MTPH_LVP_CONTROL		0x225c
-#define DP_MTPH_SYMBOL_VALUES		0x2260
-#define DP_MTPH_ECF_CONTROL		0x2264
-#define DP_MTPH_ACT_CONTROL		0x2268
-#define DP_MTPH_STATUS			0x226c
-#define DP_INTERRUPT_SOURCE		0x2270
-#define DP_INTERRUPT_MASK		0x2274
-#define DP_FRONT_BACK_PORCH		0x2278
-#define DP_BYTE_COUNT			0x227c
-
-/* dptx stream addr */
-#define MSA_HORIZONTAL_0		0x2280
-#define MSA_HORIZONTAL_1		0x2284
-#define MSA_VERTICAL_0			0x2288
-#define MSA_VERTICAL_1			0x228c
-#define MSA_MISC			0x2290
-#define STREAM_CONFIG			0x2294
-#define AUDIO_PACK_STATUS		0x2298
-#define VIF_STATUS			0x229c
-#define PCK_STUFF_STATUS_0		0x22a0
-#define PCK_STUFF_STATUS_1		0x22a4
-#define INFO_PACK_STATUS		0x22a8
-#define RATE_GOVERNOR_STATUS		0x22ac
-#define DP_HORIZONTAL			0x22b0
-#define DP_VERTICAL_0			0x22b4
-#define DP_VERTICAL_1			0x22b8
-#define DP_BLOCK_SDP			0x22bc
-
-/* dptx glbl addr */
-#define DPTX_LANE_EN			0x2300
-#define DPTX_ENHNCD			0x2304
-#define DPTX_INT_MASK			0x2308
-#define DPTX_INT_STATUS			0x230c
-
-/* dp aux addr */
-#define DP_AUX_HOST_CONTROL		0x2800
-#define DP_AUX_INTERRUPT_SOURCE		0x2804
-#define DP_AUX_INTERRUPT_MASK		0x2808
-#define DP_AUX_SWAP_INVERSION_CONTROL	0x280c
-#define DP_AUX_SEND_NACK_TRANSACTION	0x2810
-#define DP_AUX_CLEAR_RX			0x2814
-#define DP_AUX_CLEAR_TX			0x2818
-#define DP_AUX_TIMER_STOP		0x281c
-#define DP_AUX_TIMER_CLEAR		0x2820
-#define DP_AUX_RESET_SW			0x2824
-#define DP_AUX_DIVIDE_2M		0x2828
-#define DP_AUX_TX_PREACHARGE_LENGTH	0x282c
-#define DP_AUX_FREQUENCY_1M_MAX		0x2830
-#define DP_AUX_FREQUENCY_1M_MIN		0x2834
-#define DP_AUX_RX_PRE_MIN		0x2838
-#define DP_AUX_RX_PRE_MAX		0x283c
-#define DP_AUX_TIMER_PRESET		0x2840
-#define DP_AUX_NACK_FORMAT		0x2844
-#define DP_AUX_TX_DATA			0x2848
-#define DP_AUX_RX_DATA			0x284c
-#define DP_AUX_TX_STATUS		0x2850
-#define DP_AUX_RX_STATUS		0x2854
-#define DP_AUX_RX_CYCLE_COUNTER		0x2858
-#define DP_AUX_MAIN_STATES		0x285c
-#define DP_AUX_MAIN_TIMER		0x2860
-#define DP_AUX_AFE_OUT			0x2864
-
-/* crypto addr */
-#define CRYPTO_HDCP_REVISION		0x5800
-#define HDCP_CRYPTO_CONFIG		0x5804
-#define CRYPTO_INTERRUPT_SOURCE		0x5808
-#define CRYPTO_INTERRUPT_MASK		0x580c
-#define CRYPTO22_CONFIG			0x5818
-#define CRYPTO22_STATUS			0x581c
-#define SHA_256_DATA_IN			0x583c
-#define SHA_256_DATA_OUT_(x)		(0x5850 + ((x) << 2))
-#define AES_32_KEY_(x)			(0x5870 + ((x) << 2))
-#define AES_32_DATA_IN			0x5880
-#define AES_32_DATA_OUT_(x)		(0x5884 + ((x) << 2))
-#define CRYPTO14_CONFIG			0x58a0
-#define CRYPTO14_STATUS			0x58a4
-#define CRYPTO14_PRNM_OUT		0x58a8
-#define CRYPTO14_KM_0			0x58ac
-#define CRYPTO14_KM_1			0x58b0
-#define CRYPTO14_AN_0			0x58b4
-#define CRYPTO14_AN_1			0x58b8
-#define CRYPTO14_YOUR_KSV_0		0x58bc
-#define CRYPTO14_YOUR_KSV_1		0x58c0
-#define CRYPTO14_MI_0			0x58c4
-#define CRYPTO14_MI_1			0x58c8
-#define CRYPTO14_TI_0			0x58cc
-#define CRYPTO14_KI_0			0x58d0
-#define CRYPTO14_KI_1			0x58d4
-#define CRYPTO14_BLOCKS_NUM		0x58d8
-#define CRYPTO14_KEY_MEM_DATA_0		0x58dc
-#define CRYPTO14_KEY_MEM_DATA_1		0x58e0
-#define CRYPTO14_SHA1_MSG_DATA		0x58e4
-#define CRYPTO14_SHA1_V_VALUE_(x)	(0x58e8 + ((x) << 2))
-#define TRNG_CTRL			0x58fc
-#define TRNG_DATA_RDY			0x5900
-#define TRNG_DATA			0x5904
-
-/* cipher addr */
-#define HDCP_REVISION			0x60000
-#define INTERRUPT_SOURCE		0x60004
-#define INTERRUPT_MASK			0x60008
-#define HDCP_CIPHER_CONFIG		0x6000c
-#define AES_128_KEY_0			0x60010
-#define AES_128_KEY_1			0x60014
-#define AES_128_KEY_2			0x60018
-#define AES_128_KEY_3			0x6001c
-#define AES_128_RANDOM_0		0x60020
-#define AES_128_RANDOM_1		0x60024
-#define CIPHER14_KM_0			0x60028
-#define CIPHER14_KM_1			0x6002c
-#define CIPHER14_STATUS			0x60030
-#define CIPHER14_RI_PJ_STATUS		0x60034
-#define CIPHER_MODE			0x60038
-#define CIPHER14_AN_0			0x6003c
-#define CIPHER14_AN_1			0x60040
-#define CIPHER22_AUTH			0x60044
-#define CIPHER14_R0_DP_STATUS		0x60048
-#define CIPHER14_BOOTSTRAP		0x6004c
-
-#define DPTX_FRMR_DATA_CLK_RSTN_EN	BIT(11)
-#define DPTX_FRMR_DATA_CLK_EN		BIT(10)
-#define DPTX_PHY_DATA_RSTN_EN		BIT(9)
-#define DPTX_PHY_DATA_CLK_EN		BIT(8)
-#define DPTX_PHY_CHAR_RSTN_EN		BIT(7)
-#define DPTX_PHY_CHAR_CLK_EN		BIT(6)
-#define SOURCE_AUX_SYS_CLK_RSTN_EN	BIT(5)
-#define SOURCE_AUX_SYS_CLK_EN		BIT(4)
-#define DPTX_SYS_CLK_RSTN_EN		BIT(3)
-#define DPTX_SYS_CLK_EN			BIT(2)
-#define CFG_DPTX_VIF_CLK_RSTN_EN	BIT(1)
-#define CFG_DPTX_VIF_CLK_EN		BIT(0)
-
-#define SOURCE_PHY_RSTN_EN		BIT(1)
-#define SOURCE_PHY_CLK_EN		BIT(0)
-
-#define SOURCE_PKT_SYS_RSTN_EN		BIT(3)
-#define SOURCE_PKT_SYS_CLK_EN		BIT(2)
-#define SOURCE_PKT_DATA_RSTN_EN		BIT(1)
-#define SOURCE_PKT_DATA_CLK_EN		BIT(0)
-
-#define SPDIF_CDR_CLK_RSTN_EN		BIT(5)
-#define SPDIF_CDR_CLK_EN		BIT(4)
-#define SOURCE_AIF_SYS_RSTN_EN		BIT(3)
-#define SOURCE_AIF_SYS_CLK_EN		BIT(2)
-#define SOURCE_AIF_CLK_RSTN_EN		BIT(1)
-#define SOURCE_AIF_CLK_EN		BIT(0)
-
-#define SOURCE_CIPHER_SYSTEM_CLK_RSTN_EN	BIT(3)
-#define SOURCE_CIPHER_SYS_CLK_EN		BIT(2)
-#define SOURCE_CIPHER_CHAR_CLK_RSTN_EN		BIT(1)
-#define SOURCE_CIPHER_CHAR_CLK_EN		BIT(0)
-
-#define SOURCE_CRYPTO_SYS_CLK_RSTN_EN	BIT(1)
-#define SOURCE_CRYPTO_SYS_CLK_EN	BIT(0)
-
-#define APB_IRAM_PATH			BIT(2)
-#define APB_DRAM_PATH			BIT(1)
-#define APB_XT_RESET			BIT(0)
-
-#define MAILBOX_INT_MASK_BIT		BIT(1)
-#define PIF_INT_MASK_BIT		BIT(0)
-#define ALL_INT_MASK			3
-
-/* mailbox */
-#define MB_OPCODE_ID			0
-#define MB_MODULE_ID			1
-#define MB_SIZE_MSB_ID			2
-#define MB_SIZE_LSB_ID			3
-#define MB_DATA_ID			4
-
-#define MB_MODULE_ID_DP_TX		0x01
-#define MB_MODULE_ID_HDCP_TX		0x07
-#define MB_MODULE_ID_HDCP_RX		0x08
-#define MB_MODULE_ID_HDCP_GENERAL	0x09
-#define MB_MODULE_ID_GENERAL		0x0a
-
-/* general opcode */
-#define GENERAL_MAIN_CONTROL		0x01
-#define GENERAL_TEST_ECHO		0x02
-#define GENERAL_BUS_SETTINGS		0x03
-#define GENERAL_TEST_ACCESS		0x04
-#define GENERAL_REGISTER_READ		0x07
-
-#define DPTX_SET_POWER_MNG			0x00
-#define DPTX_SET_HOST_CAPABILITIES		0x01
-#define DPTX_GET_EDID				0x02
-#define DPTX_READ_DPCD				0x03
-#define DPTX_WRITE_DPCD				0x04
-#define DPTX_ENABLE_EVENT			0x05
-#define DPTX_WRITE_REGISTER			0x06
-#define DPTX_READ_REGISTER			0x07
-#define DPTX_WRITE_FIELD			0x08
-#define DPTX_TRAINING_CONTROL			0x09
-#define DPTX_READ_EVENT				0x0a
-#define DPTX_READ_LINK_STAT			0x0b
-#define DPTX_SET_VIDEO				0x0c
-#define DPTX_SET_AUDIO				0x0d
-#define DPTX_GET_LAST_AUX_STAUS			0x0e
-#define DPTX_SET_LINK_BREAK_POINT		0x0f
-#define DPTX_FORCE_LANES			0x10
-#define DPTX_HPD_STATE				0x11
-#define DPTX_ADJUST_LT				0x12
-
-#define FW_STANDBY				0
-#define FW_ACTIVE				1
-
-#define DPTX_EVENT_ENABLE_HPD			BIT(0)
-#define DPTX_EVENT_ENABLE_TRAINING		BIT(1)
-
-#define LINK_TRAINING_NOT_ACTIVE		0
-#define LINK_TRAINING_RUN			1
-#define LINK_TRAINING_RESTART			2
-
-#define CONTROL_VIDEO_IDLE			0
-#define CONTROL_VIDEO_VALID			1
-
-#define TU_CNT_RST_EN				BIT(15)
-#define VIF_BYPASS_INTERLACE			BIT(13)
-#define INTERLACE_FMT_DET			BIT(12)
-#define INTERLACE_DTCT_WIN			0x20
-
-#define DP_FRAMER_SP_INTERLACE_EN		BIT(2)
-#define DP_FRAMER_SP_HSP			BIT(1)
-#define DP_FRAMER_SP_VSP			BIT(0)
-
-/* capability */
-#define AUX_HOST_INVERT				3
-#define	FAST_LT_SUPPORT				1
-#define FAST_LT_NOT_SUPPORT			0
-#define LANE_MAPPING_NORMAL			0x1b
-#define LANE_MAPPING_FLIPPED			0xe4
-#define ENHANCED				1
-#define SCRAMBLER_EN				BIT(4)
-
-#define	FULL_LT_STARTED				BIT(0)
-#define FASE_LT_STARTED				BIT(1)
-#define CLK_RECOVERY_FINISHED			BIT(2)
-#define EQ_PHASE_FINISHED			BIT(3)
-#define FASE_LT_START_FINISHED			BIT(4)
-#define CLK_RECOVERY_FAILED			BIT(5)
-#define EQ_PHASE_FAILED				BIT(6)
-#define FASE_LT_FAILED				BIT(7)
-
-#define DPTX_HPD_EVENT				BIT(0)
-#define DPTX_TRAINING_EVENT			BIT(1)
-#define HDCP_TX_STATUS_EVENT			BIT(4)
-#define HDCP2_TX_IS_KM_STORED_EVENT		BIT(5)
-#define HDCP2_TX_STORE_KM_EVENT			BIT(6)
-#define HDCP_TX_IS_RECEIVER_ID_VALID_EVENT	BIT(7)
-
-#define TU_SIZE					30
-#define CDNS_DP_MAX_LINK_RATE			DP_LINK_BW_5_4
-
-/* audio */
-#define AUDIO_PACK_EN				BIT(8)
-#define SAMPLING_FREQ(x)			(((x) & 0xf) << 16)
-#define ORIGINAL_SAMP_FREQ(x)			(((x) & 0xf) << 24)
-#define SYNC_WR_TO_CH_ZERO			BIT(1)
-#define I2S_DEC_START				BIT(1)
-#define AUDIO_SW_RST				BIT(0)
-#define SMPL2PKT_EN				BIT(1)
-#define MAX_NUM_CH(x)				(((x) & 0x1f) - 1)
-#define NUM_OF_I2S_PORTS(x)			((((x) / 2 - 1) & 0x3) << 5)
-#define AUDIO_TYPE_LPCM				(2 << 7)
-#define CFG_SUB_PCKT_NUM(x)			((((x) - 1) & 0x7) << 11)
-#define AUDIO_CH_NUM(x)				((((x) - 1) & 0x1f) << 2)
-#define TRANS_SMPL_WIDTH_16			0
-#define TRANS_SMPL_WIDTH_24			BIT(11)
-#define TRANS_SMPL_WIDTH_32			(2 << 11)
-#define I2S_DEC_PORT_EN(x)			(((x) & 0xf) << 17)
-#define SPDIF_ENABLE				BIT(21)
-#define SPDIF_AVG_SEL				BIT(20)
-#define SPDIF_JITTER_BYPASS			BIT(19)
-#define SPDIF_FIFO_MID_RANGE(x)			(((x) & 0xff) << 11)
-#define SPDIF_JITTER_THRSH(x)			(((x) & 0xff) << 3)
-#define SPDIF_JITTER_AVG_WIN(x)			((x) & 0x7)
-
-/* Reference cycles when using lane clock as reference */
-#define LANE_REF_CYC				0x8000
-
-enum voltage_swing_level {
-	VOLTAGE_LEVEL_0,
-	VOLTAGE_LEVEL_1,
-	VOLTAGE_LEVEL_2,
-	VOLTAGE_LEVEL_3,
-};
-
-enum pre_emphasis_level {
-	PRE_EMPHASIS_LEVEL_0,
-	PRE_EMPHASIS_LEVEL_1,
-	PRE_EMPHASIS_LEVEL_2,
-	PRE_EMPHASIS_LEVEL_3,
-};
-
-enum pattern_set {
-	PTS1		= BIT(0),
-	PTS2		= BIT(1),
-	PTS3		= BIT(2),
-	PTS4		= BIT(3),
-	DP_NONE		= BIT(4)
-};
-
-enum vic_color_depth {
-	BCS_6 = 0x1,
-	BCS_8 = 0x2,
-	BCS_10 = 0x4,
-	BCS_12 = 0x8,
-	BCS_16 = 0x10,
-};
-
-enum vic_bt_type {
-	BT_601 = 0x0,
-	BT_709 = 0x1,
-};
-
-enum audio_format {
-	AFMT_I2S = 0,
-	AFMT_SPDIF = 1,
-	AFMT_UNUSED,
-};
-
-struct audio_info {
-	enum audio_format format;
-	int sample_rate;
-	int channels;
-	int sample_width;
-};
-
-enum vic_pxl_encoding_format {
-	PXL_RGB = 0x1,
-	YCBCR_4_4_4 = 0x2,
-	YCBCR_4_2_2 = 0x4,
-	YCBCR_4_2_0 = 0x8,
-	Y_ONLY = 0x10,
-};
-
-struct video_info {
-	bool h_sync_polarity;
-	bool v_sync_polarity;
-	bool interlaced;
-	int color_depth;
-	enum vic_pxl_encoding_format color_fmt;
-};
-
-struct cdns_mhdp_host {
-	unsigned int	link_rate;
-	u8	lanes_cnt;
-	u8	volt_swing;
-	u8	pre_emphasis;
-	u8	pattern_supp;
-	u8	lane_mapping;
-	u8	fast_link : 1;
-	u8	enhanced : 1;
-	u8	scrambler : 1;
-	u8	ssc : 1;
-};
-
-struct cdns_mhdp_sink {
-	unsigned int	link_rate;
-	u8	lanes_cnt;
-	u8	pattern_supp;
-	u8	fast_link;
-	u8	enhanced;
-};
-
-struct cdns_mhdp_display_fmt {
-	u32 color_format;
-	u32 bpc;
-	bool y_only;
-};
-
-struct cdns_mhdp_bridge;
-struct cdns_mhdp_connector;
-
-struct cdns_mhdp_bridge {
-	struct cdns_mhdp_device *mhdp;
-	struct drm_bridge base;
-	int pbn;
-	int8_t stream_id;
-	struct cdns_mhdp_connector *connector;
-	bool is_active;
-};
-
-
-struct cdns_mhdp_connector {
-	struct drm_connector base;
-	struct cdns_mhdp_bridge *bridge;
-};
-
-
-struct cdns_mhdp_device {
-	void __iomem		*regs;
-
-	struct device		*dev;
-	struct clk		*clk;
-
-	struct drm_dp_link	link;
-	struct cdns_mhdp_connector  connector;
-	struct clk		*spdif_clk;
-	struct reset_control	*spdif_rst;
-
-	struct platform_device	*audio_pdev;
-	struct audio_info	audio_info;
-
-	struct drm_dp_aux	aux;
-	struct cdns_mhdp_host	host;
-	struct cdns_mhdp_sink	sink;
-	struct cdns_mhdp_display_fmt display_fmt;
-	struct cdns_mhdp_bridge	bridge;
-	struct phy		*phy;
-
-	struct video_info	video_info;
-	struct drm_display_mode	mode;
-	unsigned int		fw_version;
-
-	bool link_up;
-	bool plugged;
-
-	void __iomem            *j721e_regs;
-};
-
-void cdns_mhdp_clock_reset(struct cdns_mhdp_device *mhdp);
-void cdns_mhdp_set_fw_clk(struct cdns_mhdp_device *mhdp, unsigned long clk);
-int cdns_mhdp_load_firmware(struct cdns_mhdp_device *mhdp, const u32 *i_mem,
-			    u32 i_size, const u32 *d_mem, u32 d_size);
-int cdns_mhdp_set_firmware_active(struct cdns_mhdp_device *mhdp, bool enable);
-int cdns_mhdp_set_host_cap(struct cdns_mhdp_device *mhdp, u8 lanes, bool flip);
-int cdns_mhdp_event_config(struct cdns_mhdp_device *mhdp);
-u32 cdns_mhdp_get_event(struct cdns_mhdp_device *mhdp);
-int cdns_mhdp_get_hpd_status(struct cdns_mhdp_device *mhdp);
-int cdns_mhdp_dpcd_write(struct cdns_mhdp_device *mhdp, u32 addr, u8 value);
-int cdns_mhdp_dpcd_read(struct cdns_mhdp_device *mhdp,
-			u32 addr, u8 *data, u16 len);
-int cdns_mhdp_get_edid_block(void *mhdp, u8 *edid,
-			     unsigned int block, size_t length);
-int cdns_mhdp_train_link(struct cdns_mhdp_device *mhdp);
-int cdns_mhdp_set_video_status(struct cdns_mhdp_device *mhdp, int active);
-int cdns_mhdp_config_video(struct cdns_mhdp_device *mhdp);
-int cdns_mhdp_audio_stop(struct cdns_mhdp_device *mhdp,
-			 struct audio_info *audio);
-int cdns_mhdp_audio_mute(struct cdns_mhdp_device *mhdp, bool enable);
-int cdns_mhdp_audio_config(struct cdns_mhdp_device *mhdp,
-			   struct audio_info *audio);
-int cdns_mhdp_reg_read(struct cdns_mhdp_device *mhdp, u32 addr, u32 *value);
-int cdns_mhdp_reg_write(struct cdns_mhdp_device *mhdp, u16 addr, u32 val);
-int cdns_mhdp_reg_write_bit(struct cdns_mhdp_device *mhdp, u16 addr,
-			    u8 start_bit, u8 bits_no, u32 val);
-int cdns_mhdp_adjust_lt(struct cdns_mhdp_device *mhdp, u8 nlanes,
-			u16 udelay, u8 *lanes_data,
-			u8 *dpcd);
-#endif /* CDNS_MHDP_COMMON_H_ */