[DPU PATCH 06/11] drm/msm/dpu: remove hdcp support

Rajesh Yadav ryadav at codeaurora.org
Wed May 30 14:49:43 UTC 2018


Remove hdcp 1.x support from dpu driver.
The hdcp 1.x support will be posted back with
display port driver.

Signed-off-by: Rajesh Yadav <ryadav at codeaurora.org>
---
 drivers/gpu/drm/msm/dpu_hdcp.h    |   74 --
 drivers/gpu/drm/msm/dpu_hdcp_1x.c | 1579 -------------------------------------
 2 files changed, 1653 deletions(-)
 delete mode 100644 drivers/gpu/drm/msm/dpu_hdcp.h
 delete mode 100644 drivers/gpu/drm/msm/dpu_hdcp_1x.c

diff --git a/drivers/gpu/drm/msm/dpu_hdcp.h b/drivers/gpu/drm/msm/dpu_hdcp.h
deleted file mode 100644
index 63a98ca..0000000
--- a/drivers/gpu/drm/msm/dpu_hdcp.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/* Copyright (c) 2012, 2014-2018, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * 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 __DPU_HDCP_H__
-#define __DPU_HDCP_H__
-
-#include <soc/qcom/scm.h>
-#include <linux/types.h>
-#include <linux/bitops.h>
-#include <linux/debugfs.h>
-#include <linux/of_device.h>
-#include <linux/i2c.h>
-#include <drm/drmP.h>
-#include <drm/drm_crtc.h>
-#include <drm/drm_edid.h>
-#include "dpu_kms.h"
-
-enum dpu_hdcp_client_id {
-	HDCP_CLIENT_HDMI,
-	HDCP_CLIENT_DP,
-};
-
-enum dpu_hdcp_states {
-	HDCP_STATE_INACTIVE,
-	HDCP_STATE_AUTHENTICATING,
-	HDCP_STATE_AUTHENTICATED,
-	HDCP_STATE_AUTH_FAIL,
-	HDCP_STATE_AUTH_ENC_NONE,
-	HDCP_STATE_AUTH_ENC_1X,
-	HDCP_STATE_AUTH_ENC_2P2
-};
-
-struct dpu_hdcp_init_data {
-	struct dss_io_data *core_io;
-	struct dss_io_data *qfprom_io;
-	struct dss_io_data *hdcp_io;
-	struct drm_dp_aux *drm_aux;
-	struct mutex *mutex;
-	struct workqueue_struct *workq;
-	void *cb_data;
-	void (*notify_status)(void *cb_data, enum dpu_hdcp_states status);
-	u8 sink_rx_status;
-	unsigned char *revision;
-	u32 phy_addr;
-	bool sec_access;
-	enum dpu_hdcp_client_id client_id;
-};
-
-struct dpu_hdcp_ops {
-	int (*isr)(void *ptr);
-	int (*cp_irq)(void *ptr);
-	int (*reauthenticate)(void *input);
-	int (*authenticate)(void *hdcp_ctrl);
-	bool (*feature_supported)(void *input);
-	void (*off)(void *hdcp_ctrl);
-};
-
-void *dpu_hdcp_1x_init(struct dpu_hdcp_init_data *init_data);
-void dpu_hdcp_1x_deinit(void *input);
-struct dpu_hdcp_ops *dpu_hdcp_1x_start(void *input);
-void *dpu_dp_hdcp2p2_init(struct dpu_hdcp_init_data *init_data);
-void dpu_dp_hdcp2p2_deinit(void *input);
-const char *dpu_hdcp_state_name(enum dpu_hdcp_states hdcp_state);
-struct dpu_hdcp_ops *dpu_dp_hdcp2p2_start(void *input);
-#endif /* __DPU_HDCP_H__ */
diff --git a/drivers/gpu/drm/msm/dpu_hdcp_1x.c b/drivers/gpu/drm/msm/dpu_hdcp_1x.c
deleted file mode 100644
index ebbd591..0000000
--- a/drivers/gpu/drm/msm/dpu_hdcp_1x.c
+++ /dev/null
@@ -1,1579 +0,0 @@
-/* Copyright (c) 2010-2018, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * 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.
- */
-
-#define pr_fmt(fmt)	"[dpu-hdcp1x] %s: " fmt, __func__
-
-#include <linux/io.h>
-#include <linux/types.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/iopoll.h>
-#include <linux/hdcp_qseecom.h>
-#include <drm/drm_dp_helper.h>
-#include "dpu_hdcp.h"
-#include "hdmi.xml.h"
-#include "video/msm_hdmi_hdcp_mgr.h"
-#include "dp/dp_reg.h"
-
-#define DPU_HDCP_STATE_NAME (dpu_hdcp_state_name(hdcp->hdcp_state))
-
-/* QFPROM Registers for HDMI/HDCP */
-#define QFPROM_RAW_FEAT_CONFIG_ROW0_LSB  (0x000000F8)
-#define QFPROM_RAW_FEAT_CONFIG_ROW0_MSB  (0x000000FC)
-#define QFPROM_RAW_VERSION_4             (0x000000A8)
-#define SEC_CTRL_HW_VERSION              (0x00006000)
-#define HDCP_KSV_LSB                     (0x000060D8)
-#define HDCP_KSV_MSB                     (0x000060DC)
-#define HDCP_KSV_VERSION_4_OFFSET        (0x00000014)
-
-/* SEC_CTRL version that supports HDCP SEL */
-#define HDCP_SEL_MIN_SEC_VERSION         (0x50010000)
-
-/* HDCP Keys state based on HDMI_HDCP_LINK0_STATUS:KEYS_STATE */
-#define HDCP_KEYS_STATE_NO_KEYS		0
-#define HDCP_KEYS_STATE_NOT_CHECKED	1
-#define HDCP_KEYS_STATE_CHECKING	2
-#define HDCP_KEYS_STATE_VALID		3
-#define HDCP_KEYS_STATE_AKSV_NOT_VALID	4
-#define HDCP_KEYS_STATE_CHKSUM_MISMATCH	5
-#define HDCP_KEYS_STATE_PROD_AKSV	6
-#define HDCP_KEYS_STATE_RESERVED	7
-
-#define TZ_HDCP_CMD_ID 0x00004401
-
-#define HDCP_INT_CLR (isr->auth_success_ack | isr->auth_fail_ack | \
-			isr->auth_fail_info_ack | isr->tx_req_ack | \
-			isr->encryption_ready_ack | \
-			isr->encryption_not_ready_ack | isr->tx_req_done_ack)
-
-#define HDCP_INT_EN (isr->auth_success_mask | isr->auth_fail_mask | \
-			isr->encryption_ready_mask | \
-			isr->encryption_not_ready_mask)
-
-#define HDCP_POLL_SLEEP_US   (20 * 1000)
-#define HDCP_POLL_TIMEOUT_US (HDCP_POLL_SLEEP_US * 100)
-
-#define dpu_hdcp_1x_state(x) (hdcp->hdcp_state == x)
-
-struct dpu_hdcp_sink_addr {
-	char *name;
-	u32 addr;
-	u32 len;
-};
-
-struct dpu_hdcp_1x_reg_data {
-	u32 reg_id;
-	struct dpu_hdcp_sink_addr *sink;
-};
-
-struct dpu_hdcp_sink_addr_map {
-	/* addresses to read from sink */
-	struct dpu_hdcp_sink_addr bcaps;
-	struct dpu_hdcp_sink_addr bksv;
-	struct dpu_hdcp_sink_addr r0;
-	struct dpu_hdcp_sink_addr bstatus;
-	struct dpu_hdcp_sink_addr cp_irq_status;
-	struct dpu_hdcp_sink_addr ksv_fifo;
-	struct dpu_hdcp_sink_addr v_h0;
-	struct dpu_hdcp_sink_addr v_h1;
-	struct dpu_hdcp_sink_addr v_h2;
-	struct dpu_hdcp_sink_addr v_h3;
-	struct dpu_hdcp_sink_addr v_h4;
-
-	/* addresses to write to sink */
-	struct dpu_hdcp_sink_addr an;
-	struct dpu_hdcp_sink_addr aksv;
-	struct dpu_hdcp_sink_addr ainfo;
-};
-
-struct dpu_hdcp_int_set {
-	/* interrupt register */
-	u32 int_reg;
-
-	/* interrupt enable/disable masks */
-	u32 auth_success_mask;
-	u32 auth_fail_mask;
-	u32 encryption_ready_mask;
-	u32 encryption_not_ready_mask;
-	u32 tx_req_mask;
-	u32 tx_req_done_mask;
-
-	/* interrupt acknowledgment */
-	u32 auth_success_ack;
-	u32 auth_fail_ack;
-	u32 auth_fail_info_ack;
-	u32 encryption_ready_ack;
-	u32 encryption_not_ready_ack;
-	u32 tx_req_ack;
-	u32 tx_req_done_ack;
-
-	/* interrupt status */
-	u32 auth_success_int;
-	u32 auth_fail_int;
-	u32 encryption_ready;
-	u32 encryption_not_ready;
-	u32 tx_req_int;
-	u32 tx_req_done_int;
-};
-
-struct dpu_hdcp_reg_set {
-	u32 status;
-	u32 keys_offset;
-	u32 r0_offset;
-	u32 v_offset;
-	u32 ctrl;
-	u32 aksv_lsb;
-	u32 aksv_msb;
-	u32 entropy_ctrl0;
-	u32 entropy_ctrl1;
-	u32 sec_sha_ctrl;
-	u32 sec_sha_data;
-	u32 sha_status;
-
-	u32 data2_0;
-	u32 data3;
-	u32 data4;
-	u32 data5;
-	u32 data6;
-
-	u32 sec_data0;
-	u32 sec_data1;
-	u32 sec_data7;
-	u32 sec_data8;
-	u32 sec_data9;
-	u32 sec_data10;
-	u32 sec_data11;
-	u32 sec_data12;
-
-	u32 reset;
-	u32 reset_bit;
-
-	u32 repeater;
-};
-
-#define HDCP_REG_SET_CLIENT_HDMI \
-	{0}
-
-#define HDCP_REG_SET_CLIENT_DP \
-{DP_HDCP_STATUS, 16, 14, 13, DP_HDCP_CTRL, \
-	DP_HDCP_SW_LOWER_AKSV, DP_HDCP_SW_UPPER_AKSV, \
-	DP_HDCP_ENTROPY_CTRL0, DP_HDCP_ENTROPY_CTRL1, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_SHA_CTRL, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_SHA_DATA, \
-	DP_HDCP_SHA_STATUS, DP_HDCP_RCVPORT_DATA2_0, \
-	DP_HDCP_RCVPORT_DATA3, DP_HDCP_RCVPORT_DATA4, \
-	DP_HDCP_RCVPORT_DATA5, DP_HDCP_RCVPORT_DATA6, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA0, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA1, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA7, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA8, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA9, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA10, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA11, \
-	HDCP_SEC_DP_TZ_HV_HLOS_HDCP_RCVPORT_DATA12, \
-	DP_SW_RESET, BIT(1), BIT(1)}
-
-#define HDCP_HDMI_SINK_ADDR_MAP \
-	{{"bcaps", 0x40, 1}, {"bksv", 0x00, 5}, {"r0'", 0x08, 2}, \
-	 {"bstatus", 0x41, 2}, {"??", 0x0, 0}, {"ksv-fifo", 0x43, 0}, \
-	 {"v_h0", 0x20, 4}, {"v_h1", 0x24, 4}, {"v_h2", 0x28, 4}, \
-	 {"v_h3", 0x2c, 4}, {"v_h4", 0x30, 4}, {"an", 0x18, 8}, \
-	 {"aksv", 0x10, 5}, {"ainfo", 0x00, 0},}
-
-#define HDCP_DP_SINK_ADDR_MAP \
-	{{"bcaps", 0x68028, 1}, {"bksv", 0x68000, 5}, {"r0'", 0x68005, 2}, \
-	 {"binfo", 0x6802A, 2}, {"cp_irq_status", 0x68029, 1}, \
-	 {"ksv-fifo", 0x6802C, 0}, {"v_h0", 0x68014, 4}, {"v_h1", 0x68018, 4}, \
-	 {"v_h2", 0x6801C, 4}, {"v_h3", 0x68020, 4}, {"v_h4", 0x68024, 4}, \
-	 {"an", 0x6800C, 8}, {"aksv", 0x68007, 5}, {"ainfo", 0x6803B, 1} }
-
-#define HDCP_HDMI_INT_SET \
-	{0}
-
-#define HDCP_DP_INT_SET \
-	{DP_INTR_STATUS2, \
-	 BIT(17), BIT(20), BIT(24), BIT(27), 0, 0, \
-	 BIT(16), BIT(19), BIT(21), BIT(23), BIT(26), 0, 0, \
-	 BIT(15), BIT(18), BIT(22), BIT(25), 0, 0}
-
-struct dpu_hdcp_1x {
-	u8 bcaps;
-	u32 tp_msgid;
-	u32 an_0, an_1, aksv_0, aksv_1;
-	bool sink_r0_ready;
-	bool reauth;
-	bool ksv_ready;
-	enum dpu_hdcp_states hdcp_state;
-	struct HDCP_V2V1_MSG_TOPOLOGY cached_tp;
-	struct HDCP_V2V1_MSG_TOPOLOGY current_tp;
-	struct delayed_work hdcp_auth_work;
-	struct completion r0_checked;
-	struct completion sink_r0_available;
-	struct dpu_hdcp_init_data init_data;
-	struct dpu_hdcp_ops *ops;
-	struct dpu_hdcp_reg_set reg_set;
-	struct dpu_hdcp_int_set int_set;
-	struct dpu_hdcp_sink_addr_map sink_addr;
-	struct workqueue_struct *workq;
-};
-
-const char *dpu_hdcp_state_name(enum dpu_hdcp_states hdcp_state)
-{
-	switch (hdcp_state) {
-	case HDCP_STATE_INACTIVE:	return "HDCP_STATE_INACTIVE";
-	case HDCP_STATE_AUTHENTICATING:	return "HDCP_STATE_AUTHENTICATING";
-	case HDCP_STATE_AUTHENTICATED:	return "HDCP_STATE_AUTHENTICATED";
-	case HDCP_STATE_AUTH_FAIL:	return "HDCP_STATE_AUTH_FAIL";
-	default:			return "???";
-	}
-}
-
-static int dpu_hdcp_1x_count_one(u8 *array, u8 len)
-{
-	int i, j, count = 0;
-
-	for (i = 0; i < len; i++)
-		for (j = 0; j < 8; j++)
-			count += (((array[i] >> j) & 0x1) ? 1 : 0);
-	return count;
-}
-
-static int dpu_hdcp_1x_load_keys(void *input)
-{
-	int rc = 0;
-	bool use_sw_keys = false;
-	u32 reg_val;
-	u32 ksv_lsb_addr, ksv_msb_addr;
-	u32 aksv_lsb, aksv_msb;
-	u8 aksv[5];
-	struct dss_io_data *io;
-	struct dss_io_data *qfprom_io;
-	struct dpu_hdcp_1x *hdcp = input;
-	struct dpu_hdcp_reg_set *reg_set;
-
-	if (!hdcp || !hdcp->init_data.core_io ||
-		!hdcp->init_data.qfprom_io) {
-		pr_err("invalid input\n");
-		rc = -EINVAL;
-		goto end;
-	}
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_INACTIVE) &&
-	    !dpu_hdcp_1x_state(HDCP_STATE_AUTH_FAIL)) {
-		pr_err("%s: invalid state. returning\n",
-			DPU_HDCP_STATE_NAME);
-		rc = -EINVAL;
-		goto end;
-	}
-
-	io = hdcp->init_data.core_io;
-	qfprom_io = hdcp->init_data.qfprom_io;
-	reg_set = &hdcp->reg_set;
-
-	/* On compatible hardware, use SW keys */
-	reg_val = DSS_REG_R(qfprom_io, SEC_CTRL_HW_VERSION);
-	if (reg_val >= HDCP_SEL_MIN_SEC_VERSION) {
-		reg_val = DSS_REG_R(qfprom_io,
-			QFPROM_RAW_FEAT_CONFIG_ROW0_MSB +
-			QFPROM_RAW_VERSION_4);
-
-		if (!(reg_val & BIT(23)))
-			use_sw_keys = true;
-	}
-
-	if (use_sw_keys) {
-		if (hdcp1_set_keys(&aksv_msb, &aksv_lsb)) {
-			pr_err("setting hdcp SW keys failed\n");
-			rc = -EINVAL;
-			goto end;
-		}
-	} else {
-		/* Fetch aksv from QFPROM, this info should be public. */
-		ksv_lsb_addr = HDCP_KSV_LSB;
-		ksv_msb_addr = HDCP_KSV_MSB;
-
-		if (hdcp->init_data.sec_access) {
-			ksv_lsb_addr += HDCP_KSV_VERSION_4_OFFSET;
-			ksv_msb_addr += HDCP_KSV_VERSION_4_OFFSET;
-		}
-
-		aksv_lsb = DSS_REG_R(qfprom_io, ksv_lsb_addr);
-		aksv_msb = DSS_REG_R(qfprom_io, ksv_msb_addr);
-	}
-
-	pr_debug("%s: AKSV=%02x%08x\n", DPU_HDCP_STATE_NAME,
-		aksv_msb, aksv_lsb);
-
-	aksv[0] =  aksv_lsb        & 0xFF;
-	aksv[1] = (aksv_lsb >> 8)  & 0xFF;
-	aksv[2] = (aksv_lsb >> 16) & 0xFF;
-	aksv[3] = (aksv_lsb >> 24) & 0xFF;
-	aksv[4] =  aksv_msb        & 0xFF;
-
-	/* check there are 20 ones in AKSV */
-	if (dpu_hdcp_1x_count_one(aksv, 5) != 20) {
-		pr_err("AKSV bit count failed\n");
-		rc = -EINVAL;
-		goto end;
-	}
-
-	DSS_REG_W(io, reg_set->aksv_lsb, aksv_lsb);
-	DSS_REG_W(io, reg_set->aksv_msb, aksv_msb);
-
-	/* Setup seed values for random number An */
-	DSS_REG_W(io, reg_set->entropy_ctrl0, 0xB1FFB0FF);
-	DSS_REG_W(io, reg_set->entropy_ctrl1, 0xF00DFACE);
-
-	/* make sure hw is programmed */
-	wmb();
-
-	/* enable hdcp engine */
-	DSS_REG_W(io, reg_set->ctrl, 0x1);
-
-	hdcp->hdcp_state = HDCP_STATE_AUTHENTICATING;
-end:
-	return rc;
-}
-
-static int dpu_hdcp_1x_read(struct dpu_hdcp_1x *hdcp,
-			  struct dpu_hdcp_sink_addr *sink,
-			  u8 *buf, bool realign)
-{
-	int const max_size = 15;
-	int rc = 0, read_size = 0, bytes_read = 0;
-
-	if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
-		int size = sink->len, offset = sink->addr;
-
-		do {
-			read_size = min(size, max_size);
-
-			bytes_read = drm_dp_dpcd_read(hdcp->init_data.drm_aux,
-					offset, buf, read_size);
-			if (bytes_read != read_size) {
-				pr_err("fail: offset(0x%x), size(0x%x), rc(0x%x)\n",
-					offset, read_size, bytes_read);
-				break;
-			}
-
-			buf += read_size;
-			offset += read_size;
-			size -= read_size;
-		} while (size > 0);
-	}
-
-	return rc;
-}
-
-static int dpu_hdcp_1x_write(struct dpu_hdcp_1x *hdcp,
-			   struct dpu_hdcp_sink_addr *sink, u8 *buf)
-{
-	int const max_size = 16;
-	int rc = 0, write_size = 0, bytes_written = 0;
-
-	if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
-		int size = sink->len, offset = sink->addr;
-
-		do {
-			write_size = min(size, max_size);
-
-			bytes_written =
-				drm_dp_dpcd_write(hdcp->init_data.drm_aux,
-						offset, buf, write_size);
-			if (bytes_written != write_size) {
-				pr_err("fail: offset(0x%x), size(0x%x), rc(0x%x)\n",
-					offset, write_size, bytes_written);
-				break;
-			}
-
-			buf += write_size;
-			offset += write_size;
-			size -= write_size;
-		} while (size > 0);
-	}
-
-	return rc;
-}
-
-static void dpu_hdcp_1x_enable_interrupts(struct dpu_hdcp_1x *hdcp)
-{
-	u32 intr_reg;
-	struct dss_io_data *io;
-	struct dpu_hdcp_int_set *isr;
-
-	io = hdcp->init_data.core_io;
-	isr = &hdcp->int_set;
-
-	intr_reg = DSS_REG_R(io, isr->int_reg);
-
-	intr_reg |= HDCP_INT_CLR | HDCP_INT_EN;
-
-	DSS_REG_W(io, isr->int_reg, intr_reg);
-}
-
-static int dpu_hdcp_1x_read_bcaps(struct dpu_hdcp_1x *hdcp)
-{
-	int rc;
-	struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-	struct dss_io_data *hdcp_io = hdcp->init_data.hdcp_io;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.bcaps,
-		&hdcp->bcaps, false);
-	if (rc) {
-		pr_err("error reading bcaps\n");
-		goto error;
-	}
-
-	pr_debug("bcaps read: 0x%x\n", hdcp->bcaps);
-
-	hdcp->current_tp.ds_type = hdcp->bcaps & reg_set->repeater ?
-			DS_REPEATER : DS_RECEIVER;
-
-	pr_debug("ds: %s\n", hdcp->current_tp.ds_type == DS_REPEATER ?
-			"repeater" : "receiver");
-
-	/* Write BCAPS to the hardware */
-	DSS_REG_W(hdcp_io, reg_set->sec_data12, hdcp->bcaps);
-error:
-	return rc;
-}
-
-static int dpu_hdcp_1x_wait_for_hw_ready(struct dpu_hdcp_1x *hdcp)
-{
-	int rc;
-	u32 link0_status;
-	struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-	struct dss_io_data *io = hdcp->init_data.core_io;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	/* Wait for HDCP keys to be checked and validated */
-	rc = readl_poll_timeout(io->base + reg_set->status, link0_status,
-				((link0_status >> reg_set->keys_offset) & 0x7)
-					== HDCP_KEYS_STATE_VALID ||
-				!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
-				HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
-	if (rc) {
-		pr_err("key not ready\n");
-		goto error;
-	}
-
-	/*
-	 * 1.1_Features turned off by default.
-	 * No need to write AInfo since 1.1_Features is disabled.
-	 */
-	DSS_REG_W(io, reg_set->data4, 0);
-
-	/* Wait for An0 and An1 bit to be ready */
-	rc = readl_poll_timeout(io->base + reg_set->status, link0_status,
-				(link0_status & (BIT(8) | BIT(9))) ||
-				!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
-				HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
-	if (rc) {
-		pr_err("An not ready\n");
-		goto error;
-	}
-
-	/* As per hardware recommendations, wait before reading An */
-	msleep(20);
-error:
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
-		rc = -EINVAL;
-
-	return rc;
-}
-
-static int dpu_hdcp_1x_send_an_aksv_to_sink(struct dpu_hdcp_1x *hdcp)
-{
-	int rc;
-	u8 an[8], aksv[5];
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	an[0] =  hdcp->an_0        & 0xFF;
-	an[1] = (hdcp->an_0 >> 8)  & 0xFF;
-	an[2] = (hdcp->an_0 >> 16) & 0xFF;
-	an[3] = (hdcp->an_0 >> 24) & 0xFF;
-	an[4] =  hdcp->an_1        & 0xFF;
-	an[5] = (hdcp->an_1 >> 8)  & 0xFF;
-	an[6] = (hdcp->an_1 >> 16) & 0xFF;
-	an[7] = (hdcp->an_1 >> 24) & 0xFF;
-
-	pr_debug("an read: 0x%2x%2x%2x%2x%2x%2x%2x%2x\n",
-		an[7], an[6], an[5], an[4], an[3], an[2], an[1], an[0]);
-
-	rc = dpu_hdcp_1x_write(hdcp, &hdcp->sink_addr.an, an);
-	if (rc) {
-		pr_err("error writing an to sink\n");
-		goto error;
-	}
-
-	/* Copy An and AKSV to byte arrays for transmission */
-	aksv[0] =  hdcp->aksv_0        & 0xFF;
-	aksv[1] = (hdcp->aksv_0 >> 8)  & 0xFF;
-	aksv[2] = (hdcp->aksv_0 >> 16) & 0xFF;
-	aksv[3] = (hdcp->aksv_0 >> 24) & 0xFF;
-	aksv[4] =  hdcp->aksv_1        & 0xFF;
-
-	pr_debug("aksv read: 0x%2x%2x%2x%2x%2x\n",
-		aksv[4], aksv[3], aksv[2], aksv[1], aksv[0]);
-
-	rc = dpu_hdcp_1x_write(hdcp, &hdcp->sink_addr.aksv, aksv);
-	if (rc) {
-		pr_err("error writing aksv to sink\n");
-		goto error;
-	}
-error:
-	return rc;
-}
-
-static int dpu_hdcp_1x_read_an_aksv_from_hw(struct dpu_hdcp_1x *hdcp)
-{
-	struct dss_io_data *io = hdcp->init_data.core_io;
-	struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	hdcp->an_0 = DSS_REG_R(io, reg_set->data5);
-	if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
-		udelay(1);
-		hdcp->an_0 = DSS_REG_R(io, reg_set->data5);
-	}
-
-	hdcp->an_1 = DSS_REG_R(io, reg_set->data6);
-	if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
-		udelay(1);
-		hdcp->an_1 = DSS_REG_R(io, reg_set->data6);
-	}
-
-	/* Read AKSV */
-	hdcp->aksv_0 = DSS_REG_R(io, reg_set->data3);
-	hdcp->aksv_1 = DSS_REG_R(io, reg_set->data4);
-
-	return 0;
-}
-
-static int dpu_hdcp_1x_get_bksv_from_sink(struct dpu_hdcp_1x *hdcp)
-{
-	int rc;
-	u8 *bksv = hdcp->current_tp.bksv;
-	u32 link0_bksv_0, link0_bksv_1;
-	struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-	struct dss_io_data *hdcp_io  = hdcp->init_data.hdcp_io;
-
-	rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.bksv, bksv, false);
-	if (rc) {
-		pr_err("error reading bksv from sink\n");
-		goto error;
-	}
-
-	pr_debug("bksv read: 0x%2x%2x%2x%2x%2x\n",
-		bksv[4], bksv[3], bksv[2], bksv[1], bksv[0]);
-
-	/* check there are 20 ones in BKSV */
-	if (dpu_hdcp_1x_count_one(bksv, 5) != 20) {
-		pr_err("%s: BKSV doesn't have 20 1's and 20 0's\n",
-			DPU_HDCP_STATE_NAME);
-		rc = -EINVAL;
-		goto error;
-	}
-
-	link0_bksv_0 = bksv[3];
-	link0_bksv_0 = (link0_bksv_0 << 8) | bksv[2];
-	link0_bksv_0 = (link0_bksv_0 << 8) | bksv[1];
-	link0_bksv_0 = (link0_bksv_0 << 8) | bksv[0];
-	link0_bksv_1 = bksv[4];
-
-	DSS_REG_W(hdcp_io, reg_set->sec_data0, link0_bksv_0);
-	DSS_REG_W(hdcp_io, reg_set->sec_data1, link0_bksv_1);
-error:
-	return rc;
-}
-
-static void dpu_hdcp_1x_enable_sink_irq_hpd(struct dpu_hdcp_1x *hdcp)
-{
-	u8 const required_major = 1, required_minor = 2;
-	u8 sink_major = 0, sink_minor = 0;
-	u8 enable_hpd_irq = 0x1;
-	int rc;
-	unsigned char revision = *hdcp->init_data.revision;
-
-	sink_major = (revision >> 4) & 0x0f;
-	sink_minor = revision & 0x0f;
-	pr_debug("revision: %d.%d\n", sink_major, sink_minor);
-
-	if ((sink_minor < required_minor) || (sink_major < required_major) ||
-	  (hdcp->current_tp.ds_type != DS_REPEATER)) {
-		pr_debug("sink irq hpd not enabled\n");
-		return;
-	}
-
-	rc = dpu_hdcp_1x_write(hdcp, &hdcp->sink_addr.ainfo, &enable_hpd_irq);
-	if (rc)
-		pr_debug("error writing ainfo to sink\n");
-}
-
-static int dpu_hdcp_1x_verify_r0(struct dpu_hdcp_1x *hdcp)
-{
-	int rc, r0_retry = 3;
-	u8 buf[2];
-	u32 link0_status, timeout_count;
-	u32 const r0_read_delay_us = 1;
-	u32 const r0_read_timeout_us = r0_read_delay_us * 10;
-	struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-	struct dss_io_data *io = hdcp->init_data.core_io;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	/* Wait for HDCP R0 computation to be completed */
-	rc = readl_poll_timeout(io->base + reg_set->status, link0_status,
-				(link0_status & BIT(reg_set->r0_offset)) ||
-				!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
-				HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
-	if (rc) {
-		pr_err("R0 not ready\n");
-		goto error;
-	}
-
-	/*
-	 * HDCP Compliace Test case 1A-01:
-	 * Wait here at least 100ms before reading R0'
-	 */
-	if (hdcp->init_data.client_id == HDCP_CLIENT_HDMI) {
-		msleep(100);
-	} else {
-		if (!hdcp->sink_r0_ready) {
-			reinit_completion(&hdcp->sink_r0_available);
-			timeout_count = wait_for_completion_timeout(
-				&hdcp->sink_r0_available, HZ / 2);
-
-			if (hdcp->reauth) {
-				pr_err("sink R0 not ready\n");
-				rc = -EINVAL;
-				goto error;
-			}
-		}
-	}
-
-	do {
-		memset(buf, 0, sizeof(buf));
-
-		rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.r0,
-			buf, false);
-		if (rc) {
-			pr_err("error reading R0' from sink\n");
-			goto error;
-		}
-
-		pr_debug("sink R0'read: %2x%2x\n", buf[1], buf[0]);
-
-		DSS_REG_W(io, reg_set->data2_0, (((u32)buf[1]) << 8) | buf[0]);
-
-		rc = readl_poll_timeout(io->base + reg_set->status,
-			link0_status, (link0_status & BIT(12)) ||
-			!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
-			r0_read_delay_us, r0_read_timeout_us);
-	} while (rc && --r0_retry);
-error:
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
-		rc = -EINVAL;
-
-	return rc;
-}
-
-static int dpu_hdcp_1x_authentication_part1(struct dpu_hdcp_1x *hdcp)
-{
-	int rc;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	dpu_hdcp_1x_enable_interrupts(hdcp);
-
-	rc = dpu_hdcp_1x_read_bcaps(hdcp);
-	if (rc)
-		goto error;
-
-	rc = dpu_hdcp_1x_wait_for_hw_ready(hdcp);
-	if (rc)
-		goto error;
-
-	rc = dpu_hdcp_1x_read_an_aksv_from_hw(hdcp);
-	if (rc)
-		goto error;
-
-	rc = dpu_hdcp_1x_get_bksv_from_sink(hdcp);
-	if (rc)
-		goto error;
-
-	rc = dpu_hdcp_1x_send_an_aksv_to_sink(hdcp);
-	if (rc)
-		goto error;
-
-	dpu_hdcp_1x_enable_sink_irq_hpd(hdcp);
-
-	rc = dpu_hdcp_1x_verify_r0(hdcp);
-	if (rc)
-		goto error;
-
-	pr_info("SUCCESSFUL\n");
-
-	return 0;
-error:
-	pr_err("%s: FAILED\n", DPU_HDCP_STATE_NAME);
-
-	return rc;
-}
-
-static int dpu_hdcp_1x_transfer_v_h(struct dpu_hdcp_1x *hdcp)
-{
-	int rc = 0;
-	struct dss_io_data *io = hdcp->init_data.hdcp_io;
-	struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-	struct dpu_hdcp_1x_reg_data reg_data[]  = {
-		{reg_set->sec_data7,  &hdcp->sink_addr.v_h0},
-		{reg_set->sec_data8,  &hdcp->sink_addr.v_h1},
-		{reg_set->sec_data9,  &hdcp->sink_addr.v_h2},
-		{reg_set->sec_data10, &hdcp->sink_addr.v_h3},
-		{reg_set->sec_data11, &hdcp->sink_addr.v_h4},
-	};
-	struct dpu_hdcp_sink_addr sink = {"V", reg_data->sink->addr};
-	u32 size = ARRAY_SIZE(reg_data);
-	u8 buf[0xFF] = {0};
-	u32 i = 0, len = 0;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	for (i = 0; i < size; i++) {
-		struct dpu_hdcp_1x_reg_data *rd = reg_data + i;
-
-		len += rd->sink->len;
-	}
-
-	sink.len = len;
-
-	rc = dpu_hdcp_1x_read(hdcp, &sink, buf, false);
-	if (rc) {
-		pr_err("error reading %s\n", sink.name);
-		goto end;
-	}
-
-	for (i = 0; i < size; i++) {
-		struct dpu_hdcp_1x_reg_data *rd = reg_data + i;
-		u32 reg_data;
-
-		memcpy(&reg_data, buf + (sizeof(u32) * i), sizeof(u32));
-		DSS_REG_W(io, rd->reg_id, reg_data);
-	}
-end:
-	return rc;
-}
-
-static int dpu_hdcp_1x_validate_downstream(struct dpu_hdcp_1x *hdcp)
-{
-	int rc;
-	u8 buf[2] = {0, 0};
-	u8 device_count, depth;
-	u8 max_cascade_exceeded, max_devs_exceeded;
-	u16 bstatus;
-	struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.bstatus,
-			buf, false);
-	if (rc) {
-		pr_err("error reading bstatus\n");
-		goto end;
-	}
-
-	bstatus = buf[1];
-	bstatus = (bstatus << 8) | buf[0];
-
-	device_count = bstatus & 0x7F;
-
-	pr_debug("device count %d\n", device_count);
-
-	/* Cascaded repeater depth */
-	depth = (bstatus >> 8) & 0x7;
-	pr_debug("depth %d\n", depth);
-
-	/*
-	 * HDCP Compliance 1B-05:
-	 * Check if no. of devices connected to repeater
-	 * exceed max_devices_connected from bit 7 of Bstatus.
-	 */
-	max_devs_exceeded = (bstatus & BIT(7)) >> 7;
-	if (max_devs_exceeded == 0x01) {
-		pr_err("no. of devs connected exceed max allowed\n");
-		rc = -EINVAL;
-		goto end;
-	}
-
-	/*
-	 * HDCP Compliance 1B-06:
-	 * Check if no. of cascade connected to repeater
-	 * exceed max_cascade_connected from bit 11 of Bstatus.
-	 */
-	max_cascade_exceeded = (bstatus & BIT(11)) >> 11;
-	if (max_cascade_exceeded == 0x01) {
-		pr_err("no. of cascade connections exceed max allowed\n");
-		rc = -EINVAL;
-		goto end;
-	}
-
-	/* Update topology information */
-	hdcp->current_tp.dev_count = device_count;
-	hdcp->current_tp.max_cascade_exceeded = max_cascade_exceeded;
-	hdcp->current_tp.max_dev_exceeded = max_devs_exceeded;
-	hdcp->current_tp.depth = depth;
-
-	DSS_REG_W(hdcp->init_data.hdcp_io,
-		  reg_set->sec_data12, hdcp->bcaps | (bstatus << 8));
-end:
-	return rc;
-}
-
-static int dpu_hdcp_1x_read_ksv_fifo(struct dpu_hdcp_1x *hdcp)
-{
-	u32 ksv_read_retry = 20, ksv_bytes, rc = 0;
-	u8 *ksv_fifo = hdcp->current_tp.ksv_list;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	memset(ksv_fifo, 0, sizeof(hdcp->current_tp.ksv_list));
-
-	/* each KSV is 5 bytes long */
-	ksv_bytes = 5 * hdcp->current_tp.dev_count;
-	hdcp->sink_addr.ksv_fifo.len = ksv_bytes;
-
-	while (ksv_bytes && --ksv_read_retry) {
-		rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.ksv_fifo,
-				ksv_fifo, true);
-		if (rc)
-			pr_err("could not read ksv fifo (%d)\n",
-				ksv_read_retry);
-		else
-			break;
-	}
-
-	if (rc)
-		pr_err("error reading ksv_fifo\n");
-
-	return rc;
-}
-
-static int dpu_hdcp_1x_write_ksv_fifo(struct dpu_hdcp_1x *hdcp)
-{
-	int i, rc = 0;
-	u8 *ksv_fifo = hdcp->current_tp.ksv_list;
-	u32 ksv_bytes = hdcp->sink_addr.ksv_fifo.len;
-	struct dss_io_data *io = hdcp->init_data.core_io;
-	struct dss_io_data *sec_io = hdcp->init_data.hdcp_io;
-	struct dpu_hdcp_reg_set *reg_set = &hdcp->reg_set;
-	u32 sha_status = 0, status;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	/* reset SHA Controller */
-	DSS_REG_W(sec_io, reg_set->sec_sha_ctrl, 0x1);
-	DSS_REG_W(sec_io, reg_set->sec_sha_ctrl, 0x0);
-
-	for (i = 0; i < ksv_bytes - 1; i++) {
-		/* Write KSV byte and do not set DONE bit[0] */
-		DSS_REG_W_ND(sec_io, reg_set->sec_sha_data, ksv_fifo[i] << 16);
-
-		/*
-		 * Once 64 bytes have been written, we need to poll for
-		 * HDCP_SHA_BLOCK_DONE before writing any further
-		 */
-		if (i && !((i + 1) % 64)) {
-			rc = readl_poll_timeout(io->base + reg_set->sha_status,
-				sha_status, (sha_status & BIT(0)) ||
-				!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
-				HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
-			if (rc) {
-				pr_err("block not done\n");
-				goto error;
-			}
-		}
-	}
-
-	/* Write l to DONE bit[0] */
-	DSS_REG_W_ND(sec_io, reg_set->sec_sha_data,
-		(ksv_fifo[ksv_bytes - 1] << 16) | 0x1);
-
-	/* Now wait for HDCP_SHA_COMP_DONE */
-	rc = readl_poll_timeout(io->base + reg_set->sha_status, sha_status,
-				(sha_status & BIT(4)) ||
-				!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
-				HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
-	if (rc) {
-		pr_err("V computation not done\n");
-		goto error;
-	}
-
-	/* Wait for V_MATCHES */
-	rc = readl_poll_timeout(io->base + reg_set->status, status,
-				(status & BIT(reg_set->v_offset)) ||
-				!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING),
-				HDCP_POLL_SLEEP_US, HDCP_POLL_TIMEOUT_US);
-	if (rc) {
-		pr_err("V mismatch\n");
-		rc = -EINVAL;
-	}
-error:
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
-		rc = -EINVAL;
-
-	return rc;
-}
-
-static int dpu_hdcp_1x_wait_for_ksv_ready(struct dpu_hdcp_1x *hdcp)
-{
-	int rc, timeout;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Wait until READY bit is set in BCAPS, as per HDCP specifications
-	 * maximum permitted time to check for READY bit is five seconds.
-	 */
-	rc = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.bcaps,
-		&hdcp->bcaps, false);
-	if (rc) {
-		pr_err("error reading bcaps\n");
-		goto error;
-	}
-
-	if (hdcp->init_data.client_id == HDCP_CLIENT_HDMI) {
-		timeout = 50;
-
-		while (!(hdcp->bcaps & BIT(5)) && --timeout) {
-			rc = dpu_hdcp_1x_read(hdcp,
-				&hdcp->sink_addr.bcaps,
-				&hdcp->bcaps, false);
-			if (rc ||
-			   !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-				pr_err("error reading bcaps\n");
-				goto error;
-			}
-			msleep(100);
-		}
-	} else {
-		u8 cp_buf = 0;
-		struct dpu_hdcp_sink_addr *sink =
-			&hdcp->sink_addr.cp_irq_status;
-
-		timeout = jiffies_to_msecs(jiffies);
-
-		while (1) {
-			rc = dpu_hdcp_1x_read(hdcp, sink, &cp_buf, false);
-			if (rc)
-				goto error;
-
-			if (cp_buf & BIT(0))
-				break;
-
-			/* max timeout of 5 sec as per hdcp 1.x spec */
-			if (abs(timeout - jiffies_to_msecs(jiffies)) > 5000) {
-				timeout = 0;
-				break;
-			}
-
-			if (hdcp->ksv_ready || hdcp->reauth ||
-			    !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
-				break;
-
-			/* re-read after a minimum delay */
-			msleep(20);
-		}
-	}
-
-	if (!timeout || hdcp->reauth ||
-	    !dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("DS KSV not ready\n");
-		rc = -EINVAL;
-	} else {
-		hdcp->ksv_ready = true;
-	}
-error:
-	return rc;
-}
-
-static int dpu_hdcp_1x_authentication_part2(struct dpu_hdcp_1x *hdcp)
-{
-	int rc;
-	int v_retry = 3;
-
-	rc = dpu_hdcp_1x_validate_downstream(hdcp);
-	if (rc)
-		goto error;
-
-	rc = dpu_hdcp_1x_read_ksv_fifo(hdcp);
-	if (rc)
-		goto error;
-
-	do {
-		rc = dpu_hdcp_1x_transfer_v_h(hdcp);
-		if (rc)
-			goto error;
-
-		/* do not proceed further if no device connected */
-		if (!hdcp->current_tp.dev_count)
-			goto error;
-
-		rc = dpu_hdcp_1x_write_ksv_fifo(hdcp);
-	} while (--v_retry && rc);
-error:
-	if (rc) {
-		pr_err("%s: FAILED\n", DPU_HDCP_STATE_NAME);
-	} else {
-		hdcp->hdcp_state = HDCP_STATE_AUTHENTICATED;
-
-		pr_info("SUCCESSFUL\n");
-	}
-
-	return rc;
-}
-
-static void dpu_hdcp_1x_cache_topology(struct dpu_hdcp_1x *hdcp)
-{
-	if (!hdcp || !hdcp->init_data.core_io) {
-		pr_err("invalid input\n");
-		return;
-	}
-
-	memcpy((void *)&hdcp->cached_tp,
-		(void *) &hdcp->current_tp,
-		sizeof(hdcp->cached_tp));
-	hdcp1_cache_repeater_topology((void *)&hdcp->cached_tp);
-}
-
-static void dpu_hdcp_1x_notify_topology(void)
-{
-	hdcp1_notify_topology();
-}
-
-static void dpu_hdcp_1x_update_auth_status(struct dpu_hdcp_1x *hdcp)
-{
-	if (dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATED)) {
-		dpu_hdcp_1x_cache_topology(hdcp);
-		dpu_hdcp_1x_notify_topology();
-	}
-
-	if (hdcp->init_data.notify_status &&
-	    !dpu_hdcp_1x_state(HDCP_STATE_INACTIVE)) {
-		hdcp->init_data.notify_status(
-			hdcp->init_data.cb_data,
-			hdcp->hdcp_state);
-	}
-}
-
-static void dpu_hdcp_1x_auth_work(struct work_struct *work)
-{
-	int rc;
-	struct delayed_work *dw = to_delayed_work(work);
-	struct dpu_hdcp_1x *hdcp = container_of(dw,
-		struct dpu_hdcp_1x, hdcp_auth_work);
-	struct dss_io_data *io;
-
-	if (!hdcp) {
-		pr_err("invalid input\n");
-		return;
-	}
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-		pr_err("invalid state\n");
-		return;
-	}
-
-	hdcp->sink_r0_ready = false;
-	hdcp->reauth = false;
-	hdcp->ksv_ready = false;
-
-	io = hdcp->init_data.core_io;
-	/* Enabling Software DDC for HDMI and REF timer for DP */
-	if (hdcp->init_data.client_id == HDCP_CLIENT_HDMI)
-		DSS_REG_W_ND(io, REG_HDMI_DDC_ARBITRATION, DSS_REG_R(io,
-				REG_HDMI_DDC_ARBITRATION) & ~(BIT(4)));
-	else if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
-		DSS_REG_W(io, DP_DP_HPD_REFTIMER, 0x10013);
-	}
-
-	/*
-	 * program hw to enable encryption as soon as
-	 * authentication is successful.
-	 */
-	hdcp1_set_enc(true);
-
-	rc = dpu_hdcp_1x_authentication_part1(hdcp);
-	if (rc)
-		goto end;
-
-	if (hdcp->current_tp.ds_type == DS_REPEATER) {
-		rc = dpu_hdcp_1x_wait_for_ksv_ready(hdcp);
-		if (rc)
-			goto end;
-	} else {
-		hdcp->hdcp_state = HDCP_STATE_AUTHENTICATED;
-		goto end;
-	}
-
-	hdcp->ksv_ready = false;
-
-	rc = dpu_hdcp_1x_authentication_part2(hdcp);
-	if (rc)
-		goto end;
-
-	/*
-	 * Disabling software DDC before going into part3 to make sure
-	 * there is no Arbitration between software and hardware for DDC
-	 */
-	if (hdcp->init_data.client_id == HDCP_CLIENT_HDMI)
-		DSS_REG_W_ND(io, REG_HDMI_DDC_ARBITRATION, DSS_REG_R(io,
-				REG_HDMI_DDC_ARBITRATION) | (BIT(4)));
-end:
-	if (rc && !dpu_hdcp_1x_state(HDCP_STATE_INACTIVE))
-		hdcp->hdcp_state = HDCP_STATE_AUTH_FAIL;
-
-	dpu_hdcp_1x_update_auth_status(hdcp);
-}
-
-static int dpu_hdcp_1x_authenticate(void *input)
-{
-	struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
-
-	if (!hdcp) {
-		pr_err("invalid input\n");
-		return -EINVAL;
-	}
-
-	flush_delayed_work(&hdcp->hdcp_auth_work);
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_INACTIVE)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	if (!dpu_hdcp_1x_load_keys(input)) {
-
-		queue_delayed_work(hdcp->workq,
-			&hdcp->hdcp_auth_work, HZ/2);
-	} else {
-		hdcp->hdcp_state = HDCP_STATE_AUTH_FAIL;
-		dpu_hdcp_1x_update_auth_status(hdcp);
-	}
-
-	return 0;
-} /* hdcp_1x_authenticate */
-
-static int dpu_hdcp_1x_reauthenticate(void *input)
-{
-	struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
-	struct dss_io_data *io;
-	struct dpu_hdcp_reg_set *reg_set;
-	struct dpu_hdcp_int_set *isr;
-	u32 ret = 0, reg;
-
-	if (!hdcp || !hdcp->init_data.core_io) {
-		pr_err("invalid input\n");
-		return -EINVAL;
-	}
-
-	io = hdcp->init_data.core_io;
-	reg_set = &hdcp->reg_set;
-	isr = &hdcp->int_set;
-
-	if (!dpu_hdcp_1x_state(HDCP_STATE_AUTH_FAIL)) {
-		pr_err("invalid state\n");
-		return -EINVAL;
-	}
-
-	/* Disable HDCP interrupts */
-	DSS_REG_W(io, isr->int_reg, DSS_REG_R(io, isr->int_reg) & ~HDCP_INT_EN);
-
-	reg = DSS_REG_R(io, reg_set->reset);
-	DSS_REG_W(io, reg_set->reset, reg | reg_set->reset_bit);
-
-	/* Disable encryption and disable the HDCP block */
-	DSS_REG_W(io, reg_set->ctrl, 0);
-
-	DSS_REG_W(io, reg_set->reset, reg & ~reg_set->reset_bit);
-
-	hdcp->hdcp_state = HDCP_STATE_INACTIVE;
-	dpu_hdcp_1x_authenticate(hdcp);
-
-	return ret;
-} /* hdcp_1x_reauthenticate */
-
-static void dpu_hdcp_1x_off(void *input)
-{
-	struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
-	struct dss_io_data *io;
-	struct dpu_hdcp_reg_set *reg_set;
-	struct dpu_hdcp_int_set *isr;
-	int rc = 0;
-	u32 reg;
-
-	if (!hdcp || !hdcp->init_data.core_io) {
-		pr_err("invalid input\n");
-		return;
-	}
-
-	io = hdcp->init_data.core_io;
-	reg_set = &hdcp->reg_set;
-	isr = &hdcp->int_set;
-
-	if (dpu_hdcp_1x_state(HDCP_STATE_INACTIVE)) {
-		pr_err("invalid state\n");
-		return;
-	}
-
-	/*
-	 * Disable HDCP interrupts.
-	 * Also, need to set the state to inactive here so that any ongoing
-	 * reauth works will know that the HDCP session has been turned off.
-	 */
-	mutex_lock(hdcp->init_data.mutex);
-	DSS_REG_W(io, isr->int_reg,
-		DSS_REG_R(io, isr->int_reg) & ~HDCP_INT_EN);
-	hdcp->hdcp_state = HDCP_STATE_INACTIVE;
-	mutex_unlock(hdcp->init_data.mutex);
-
-	/* complete any wait pending */
-	complete_all(&hdcp->sink_r0_available);
-	complete_all(&hdcp->r0_checked);
-	/*
-	 * Cancel any pending auth/reauth attempts.
-	 * If one is ongoing, this will wait for it to finish.
-	 * No more reauthentiaction attempts will be scheduled since we
-	 * set the currect state to inactive.
-	 */
-	rc = cancel_delayed_work_sync(&hdcp->hdcp_auth_work);
-	if (rc)
-		pr_debug("%s: Deleted hdcp auth work\n",
-			DPU_HDCP_STATE_NAME);
-
-	hdcp1_set_enc(false);
-
-	reg = DSS_REG_R(io, reg_set->reset);
-	DSS_REG_W(io, reg_set->reset, reg | reg_set->reset_bit);
-
-	/* Disable encryption and disable the HDCP block */
-	DSS_REG_W(io, reg_set->ctrl, 0);
-
-	DSS_REG_W(io, reg_set->reset, reg & ~reg_set->reset_bit);
-
-	hdcp->sink_r0_ready = false;
-
-	pr_debug("%s: HDCP: Off\n", DPU_HDCP_STATE_NAME);
-} /* hdcp_1x_off */
-
-static int dpu_hdcp_1x_isr(void *input)
-{
-	struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
-	int rc = 0;
-	struct dss_io_data *io;
-	u32 hdcp_int_val;
-	struct dpu_hdcp_reg_set *reg_set;
-	struct dpu_hdcp_int_set *isr;
-
-	if (!hdcp || !hdcp->init_data.core_io) {
-		pr_err("invalid input\n");
-		rc = -EINVAL;
-		goto error;
-	}
-
-	io = hdcp->init_data.core_io;
-	reg_set = &hdcp->reg_set;
-	isr = &hdcp->int_set;
-
-	hdcp_int_val = DSS_REG_R(io, isr->int_reg);
-
-	/* Ignore HDCP interrupts if HDCP is disabled */
-	if (dpu_hdcp_1x_state(HDCP_STATE_INACTIVE)) {
-		DSS_REG_W(io, isr->int_reg, hdcp_int_val | HDCP_INT_CLR);
-		return 0;
-	}
-
-	if (hdcp_int_val & isr->auth_success_int) {
-		/* AUTH_SUCCESS_INT */
-		DSS_REG_W(io, isr->int_reg,
-			(hdcp_int_val | isr->auth_success_ack));
-		pr_debug("%s: AUTH SUCCESS\n", DPU_HDCP_STATE_NAME);
-
-		if (dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING))
-			complete_all(&hdcp->r0_checked);
-	}
-
-	if (hdcp_int_val & isr->auth_fail_int) {
-		/* AUTH_FAIL_INT */
-		u32 link_status = DSS_REG_R(io, reg_set->status);
-
-		DSS_REG_W(io, isr->int_reg,
-			(hdcp_int_val | isr->auth_fail_ack));
-
-		pr_debug("%s: AUTH FAIL, LINK0_STATUS=0x%08x\n",
-			DPU_HDCP_STATE_NAME, link_status);
-
-		if (dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATED)) {
-			hdcp->hdcp_state = HDCP_STATE_AUTH_FAIL;
-			dpu_hdcp_1x_update_auth_status(hdcp);
-		} else if (dpu_hdcp_1x_state(HDCP_STATE_AUTHENTICATING)) {
-			complete_all(&hdcp->r0_checked);
-		}
-
-		/* Clear AUTH_FAIL_INFO as well */
-		DSS_REG_W(io, isr->int_reg,
-			(hdcp_int_val | isr->auth_fail_info_ack));
-	}
-
-	if (hdcp_int_val & isr->tx_req_int) {
-		/* DDC_XFER_REQ_INT */
-		DSS_REG_W(io, isr->int_reg,
-			(hdcp_int_val | isr->tx_req_ack));
-		pr_debug("%s: DDC_XFER_REQ_INT received\n",
-			DPU_HDCP_STATE_NAME);
-	}
-
-	if (hdcp_int_val & isr->tx_req_done_int) {
-		/* DDC_XFER_DONE_INT */
-		DSS_REG_W(io, isr->int_reg,
-			(hdcp_int_val | isr->tx_req_done_ack));
-		pr_debug("%s: DDC_XFER_DONE received\n",
-			DPU_HDCP_STATE_NAME);
-	}
-
-	if (hdcp_int_val & isr->encryption_ready) {
-		/* Encryption enabled */
-		DSS_REG_W(io, isr->int_reg,
-			(hdcp_int_val | isr->encryption_ready_ack));
-		pr_debug("%s: encryption ready received\n",
-			DPU_HDCP_STATE_NAME);
-	}
-
-	if (hdcp_int_val & isr->encryption_not_ready) {
-		/* Encryption enabled */
-		DSS_REG_W(io, isr->int_reg,
-			(hdcp_int_val | isr->encryption_not_ready_ack));
-		pr_debug("%s: encryption not ready received\n",
-			DPU_HDCP_STATE_NAME);
-	}
-
-error:
-	return rc;
-}
-
-void dpu_hdcp_1x_deinit(void *input)
-{
-	struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
-
-	if (!hdcp) {
-		pr_err("invalid input\n");
-		return;
-	}
-
-	if (hdcp->workq)
-		destroy_workqueue(hdcp->workq);
-
-	kfree(hdcp);
-} /* hdcp_1x_deinit */
-
-static void dpu_hdcp_1x_update_client_reg_set(struct dpu_hdcp_1x *hdcp)
-{
-	if (hdcp->init_data.client_id == HDCP_CLIENT_DP) {
-		struct dpu_hdcp_reg_set reg_set = HDCP_REG_SET_CLIENT_DP;
-		struct dpu_hdcp_sink_addr_map sink_addr = HDCP_DP_SINK_ADDR_MAP;
-		struct dpu_hdcp_int_set isr = HDCP_DP_INT_SET;
-
-		hdcp->reg_set = reg_set;
-		hdcp->sink_addr = sink_addr;
-		hdcp->int_set = isr;
-	}
-}
-
-static bool dpu_hdcp_1x_is_cp_irq_raised(struct dpu_hdcp_1x *hdcp)
-{
-	int ret;
-	u8 buf = 0;
-	struct dpu_hdcp_sink_addr sink = {"irq", 0x201, 1};
-
-	ret = dpu_hdcp_1x_read(hdcp, &sink, &buf, false);
-	if (ret)
-		pr_err("error reading irq_vector\n");
-
-	return buf & BIT(2) ? true : false;
-}
-
-static void dpu_hdcp_1x_clear_cp_irq(struct dpu_hdcp_1x *hdcp)
-{
-	int ret;
-	u8 buf = BIT(2);
-	struct dpu_hdcp_sink_addr sink = {"irq", 0x201, 1};
-
-	ret = dpu_hdcp_1x_write(hdcp, &sink, &buf);
-	if (ret)
-		pr_err("error clearing irq_vector\n");
-}
-
-static int dpu_hdcp_1x_cp_irq(void *input)
-{
-	struct dpu_hdcp_1x *hdcp = (struct dpu_hdcp_1x *)input;
-	u8 buf = 0;
-	int ret;
-
-	if (!hdcp) {
-		pr_err("invalid input\n");
-		goto irq_not_handled;
-	}
-
-	if (!dpu_hdcp_1x_is_cp_irq_raised(hdcp)) {
-		pr_debug("cp_irq not raised\n");
-		goto irq_not_handled;
-	}
-
-	ret = dpu_hdcp_1x_read(hdcp, &hdcp->sink_addr.cp_irq_status,
-			&buf, false);
-	if (ret) {
-		pr_err("error reading cp_irq_status\n");
-		goto irq_not_handled;
-	}
-
-	if ((buf & BIT(2)) || (buf & BIT(3))) {
-		pr_err("%s\n",
-			buf & BIT(2) ? "LINK_INTEGRITY_FAILURE" :
-				"REAUTHENTICATION_REQUEST");
-
-		hdcp->reauth = true;
-
-		if (!dpu_hdcp_1x_state(HDCP_STATE_INACTIVE))
-			hdcp->hdcp_state = HDCP_STATE_AUTH_FAIL;
-
-		complete_all(&hdcp->sink_r0_available);
-		dpu_hdcp_1x_update_auth_status(hdcp);
-	} else if (buf & BIT(1)) {
-		pr_debug("R0' AVAILABLE\n");
-		hdcp->sink_r0_ready = true;
-		complete_all(&hdcp->sink_r0_available);
-	} else if ((buf & BIT(0))) {
-		pr_debug("KSVs READY\n");
-
-		hdcp->ksv_ready = true;
-	} else {
-		pr_debug("spurious interrupt\n");
-	}
-
-	dpu_hdcp_1x_clear_cp_irq(hdcp);
-	return 0;
-
-irq_not_handled:
-	return -EINVAL;
-}
-
-void *dpu_hdcp_1x_init(struct dpu_hdcp_init_data *init_data)
-{
-	struct dpu_hdcp_1x *hdcp = NULL;
-	char name[20];
-	static struct dpu_hdcp_ops ops = {
-		.isr = dpu_hdcp_1x_isr,
-		.cp_irq = dpu_hdcp_1x_cp_irq,
-		.reauthenticate = dpu_hdcp_1x_reauthenticate,
-		.authenticate = dpu_hdcp_1x_authenticate,
-		.off = dpu_hdcp_1x_off
-	};
-
-	if (!init_data || !init_data->core_io || !init_data->qfprom_io ||
-		!init_data->mutex || !init_data->notify_status ||
-		!init_data->workq || !init_data->cb_data) {
-		pr_err("invalid input\n");
-		goto error;
-	}
-
-	if (init_data->sec_access && !init_data->hdcp_io) {
-		pr_err("hdcp_io required\n");
-		goto error;
-	}
-
-	hdcp = kzalloc(sizeof(*hdcp), GFP_KERNEL);
-	if (!hdcp)
-		goto error;
-
-	hdcp->init_data = *init_data;
-	hdcp->ops = &ops;
-
-	snprintf(name, sizeof(name), "hdcp_1x_%d",
-		hdcp->init_data.client_id);
-
-	hdcp->workq = create_workqueue(name);
-	if (!hdcp->workq) {
-		pr_err("Error creating workqueue\n");
-		kfree(hdcp);
-		goto error;
-	}
-
-	dpu_hdcp_1x_update_client_reg_set(hdcp);
-
-	INIT_DELAYED_WORK(&hdcp->hdcp_auth_work, dpu_hdcp_1x_auth_work);
-
-	hdcp->hdcp_state = HDCP_STATE_INACTIVE;
-	init_completion(&hdcp->r0_checked);
-	init_completion(&hdcp->sink_r0_available);
-
-	pr_debug("HDCP module initialized. HDCP_STATE=%s\n",
-		DPU_HDCP_STATE_NAME);
-
-	return (void *)hdcp;
-
-error:
-	return NULL;
-} /* hdcp_1x_init */
-
-struct dpu_hdcp_ops *dpu_hdcp_1x_start(void *input)
-{
-	return ((struct dpu_hdcp_1x *)input)->ops;
-}
-- 
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