android_kernel_samsung_sm8650-modules/drivers/cam_cpas/cam_cpas_hw.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
 * Copyright (c) 2022-2024, Qualcomm Innovation Center, Inc. All rights reserved.
 */

#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/pm_opp.h>
#include <linux/slab.h>
#include <linux/module.h>

#include "cam_cpas_hw.h"
#include "cam_cpas_hw_intf.h"
#include "cam_cpas_soc.h"
#include "cam_req_mgr_dev.h"
#include "cam_smmu_api.h"
#include "cam_compat.h"
#include "cam_mem_mgr_api.h"
#include "cam_req_mgr_interface.h"

#define CAM_CPAS_LOG_BUF_LEN      512
#define CAM_CPAS_APPLY_TYPE_START  1
#define CAM_CPAS_APPLY_TYPE_STOP   2
#define CAM_CPAS_APPLY_TYPE_UPDATE 3

static uint cam_min_camnoc_ib_bw;
module_param(cam_min_camnoc_ib_bw, uint, 0644);

static void cam_cpas_update_monitor_array(struct cam_hw_info *cpas_hw,
	const char *identifier_string, int32_t identifier_value);
static void cam_cpas_dump_monitor_array(
	struct cam_hw_info *cpas_hw);
static int cam_cpas_log_vote(struct cam_hw_info *cpas_hw, bool ddr_only);

static struct cam_cpas_subpart_info g_cam_cpas_camera_subpart_info = {
	.num_bits = 8,
	/*
	 * Below fuse indexing is based on software fuse definition which is in SMEM and provided
	 * by XBL team.
	 */
	.hw_bitmap_mask = {
		{CAM_CPAS_CAM_FUSE, BIT(0)},
		{CAM_CPAS_ISP_FUSE, BIT(0)},
		{CAM_CPAS_ISP_FUSE, BIT(1)},
		{CAM_CPAS_ISP_FUSE, BIT(2)},
		{CAM_CPAS_SFE_FUSE, BIT(0)},
		{CAM_CPAS_SFE_FUSE, BIT(1)},
		{CAM_CPAS_SFE_FUSE, BIT(2)},
		{CAM_CPAS_CUSTOM_FUSE, BIT(0)},
	}
};

static void cam_cpas_process_drv_bw_overrides(
	struct cam_cpas_bus_client *bus_client, uint64_t *high_ab, uint64_t *high_ib,
	uint64_t *low_ab, uint64_t *low_ib, const struct cam_cpas_debug_settings *cpas_settings)
{
	uint64_t curr_ab_high = *high_ab;
	uint64_t curr_ib_high = *high_ib;
	uint64_t curr_ab_low = *low_ab;
	uint64_t curr_ib_low = *low_ib;
	size_t name_len = strlen(bus_client->common_data.name);

	if (!cpas_settings) {
		CAM_ERR(CAM_CPAS, "Invalid cpas debug settings");
		return;
	}

	if (strnstr(bus_client->common_data.name, "cam_ife_0_drv",
		name_len)) {
		if (cpas_settings->cam_ife_0_drv_ab_high_bw)
			*high_ab = cpas_settings->cam_ife_0_drv_ab_high_bw;
		if (cpas_settings->cam_ife_0_drv_ib_high_bw)
			*high_ib = cpas_settings->cam_ife_0_drv_ib_high_bw;
		if (cpas_settings->cam_ife_0_drv_ab_low_bw)
			*low_ab = cpas_settings->cam_ife_0_drv_ab_low_bw;
		if (cpas_settings->cam_ife_0_drv_ib_low_bw)
			*low_ib = cpas_settings->cam_ife_0_drv_ib_low_bw;
		if (cpas_settings->cam_ife_0_drv_low_set_zero) {
			*low_ab = 0;
			*low_ib = 0;
		}
	} else if (strnstr(bus_client->common_data.name, "cam_ife_1_drv",
		name_len)) {
		if (cpas_settings->cam_ife_1_drv_ab_high_bw)
			*high_ab = cpas_settings->cam_ife_1_drv_ab_high_bw;
		if (cpas_settings->cam_ife_1_drv_ib_high_bw)
			*high_ib = cpas_settings->cam_ife_1_drv_ib_high_bw;
		if (cpas_settings->cam_ife_1_drv_ab_low_bw)
			*low_ab = cpas_settings->cam_ife_1_drv_ab_low_bw;
		if (cpas_settings->cam_ife_1_drv_ib_low_bw)
			*low_ib = cpas_settings->cam_ife_1_drv_ib_low_bw;
		if (cpas_settings->cam_ife_1_drv_low_set_zero) {
			*low_ab = 0;
			*low_ib = 0;
		}
	} else if (strnstr(bus_client->common_data.name, "cam_ife_2_drv",
		name_len)) {
		if (cpas_settings->cam_ife_2_drv_ab_high_bw)
			*high_ab = cpas_settings->cam_ife_2_drv_ab_high_bw;
		if (cpas_settings->cam_ife_2_drv_ib_high_bw)
			*high_ib = cpas_settings->cam_ife_2_drv_ib_high_bw;
		if (cpas_settings->cam_ife_2_drv_ab_low_bw)
			*low_ab = cpas_settings->cam_ife_2_drv_ab_low_bw;
		if (cpas_settings->cam_ife_2_drv_ib_low_bw)
			*low_ib = cpas_settings->cam_ife_2_drv_ib_low_bw;
		if (cpas_settings->cam_ife_2_drv_low_set_zero) {
			*low_ab = 0;
			*low_ib = 0;
		}
	} else {
		CAM_ERR(CAM_CPAS, "unknown mnoc port: %s, bw override failed",
			bus_client->common_data.name);
		return;
	}

	CAM_INFO(CAM_CPAS,
		"Overriding mnoc bw for: %s with [AB IB] high: [%llu %llu], low: [%llu %llu], curr high: [%llu %llu], curr low: [%llu %llu]",
		bus_client->common_data.name, *high_ab, *high_ib, *low_ab, *low_ib,
		curr_ab_high, curr_ib_high, curr_ab_low, curr_ib_low);
}

static void cam_cpas_process_bw_overrides(
	struct cam_cpas_bus_client *bus_client, uint64_t *ab, uint64_t *ib,
	const struct cam_cpas_debug_settings *cpas_settings)
{
	uint64_t curr_ab = *ab;
	uint64_t curr_ib = *ib;
	size_t name_len = strlen(bus_client->common_data.name);

	if (!cpas_settings) {
		CAM_ERR(CAM_CPAS, "Invalid cpas debug settings");
		return;
	}

	if (strnstr(bus_client->common_data.name, "cam_hf_0", name_len)) {
		if (cpas_settings->mnoc_hf_0_ab_bw)
			*ab = cpas_settings->mnoc_hf_0_ab_bw;
		if (cpas_settings->mnoc_hf_0_ib_bw)
			*ib = cpas_settings->mnoc_hf_0_ib_bw;
	} else if (strnstr(bus_client->common_data.name, "cam_hf_1",
		name_len)) {
		if (cpas_settings->mnoc_hf_1_ab_bw)
			*ab = cpas_settings->mnoc_hf_1_ab_bw;
		if (cpas_settings->mnoc_hf_1_ib_bw)
			*ib = cpas_settings->mnoc_hf_1_ib_bw;
	} else if (strnstr(bus_client->common_data.name, "cam_sf_0",
		name_len)) {
		if (cpas_settings->mnoc_sf_0_ab_bw)
			*ab = cpas_settings->mnoc_sf_0_ab_bw;
		if (cpas_settings->mnoc_sf_0_ib_bw)
			*ib = cpas_settings->mnoc_sf_0_ib_bw;
	} else if (strnstr(bus_client->common_data.name, "cam_sf_1",
		name_len)) {
		if (cpas_settings->mnoc_sf_1_ab_bw)
			*ab = cpas_settings->mnoc_sf_1_ab_bw;
		if (cpas_settings->mnoc_sf_1_ib_bw)
			*ib = cpas_settings->mnoc_sf_1_ib_bw;
	} else if (strnstr(bus_client->common_data.name, "cam_sf_icp",
		name_len)) {
		if (cpas_settings->mnoc_sf_icp_ab_bw)
			*ab = cpas_settings->mnoc_sf_icp_ab_bw;
		if (cpas_settings->mnoc_sf_icp_ib_bw)
			*ib = cpas_settings->mnoc_sf_icp_ib_bw;
	} else {
		CAM_ERR(CAM_CPAS, "unknown mnoc port: %s, bw override failed",
			bus_client->common_data.name);
		return;
	}

	CAM_INFO(CAM_CPAS,
		"Overriding mnoc bw for: %s with ab: %llu, ib: %llu, curr_ab: %llu, curr_ib: %llu",
		bus_client->common_data.name, *ab, *ib, curr_ab, curr_ib);
}

int cam_cpas_util_reg_read(struct cam_hw_info *cpas_hw,
	enum cam_cpas_reg_base reg_base, struct cam_cpas_reg *reg_info)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_hw_soc_info *soc_info = &cpas_hw->soc_info;
	uint32_t value;
	int reg_base_index;

	if (!reg_info->enable)
		return 0;

	reg_base_index = cpas_core->regbase_index[reg_base];
	if (reg_base_index == -1)
		return -EINVAL;

	value = cam_io_r_mb(
		soc_info->reg_map[reg_base_index].mem_base + reg_info->offset);

	CAM_INFO(CAM_CPAS, "Base[%d] Offset[0x%08x] Value[0x%08x]",
		reg_base, reg_info->offset, value);

	return 0;
}

int cam_cpas_util_reg_update(struct cam_hw_info *cpas_hw,
	enum cam_cpas_reg_base reg_base, struct cam_cpas_reg *reg_info)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_hw_soc_info *soc_info = &cpas_hw->soc_info;
	uint32_t value;
	int reg_base_index;

	if (reg_info->enable == false)
		return 0;

	reg_base_index = cpas_core->regbase_index[reg_base];
	if (reg_base_index == -1)
		return -EINVAL;

	if (reg_info->masked_value) {
		value = cam_io_r_mb(
			soc_info->reg_map[reg_base_index].mem_base +
			reg_info->offset);
		value = value & (~reg_info->mask);
		value = value | (reg_info->value << reg_info->shift);
	} else {
		value = reg_info->value;
	}

	CAM_DBG(CAM_CPAS, "Base[%d]:[0x%08x] Offset[0x%08x] Value[0x%08x]",
		reg_base, soc_info->reg_map[reg_base_index].mem_base, reg_info->offset, value);

	cam_io_w_mb(value, soc_info->reg_map[reg_base_index].mem_base +
		reg_info->offset);

	return 0;
}

static int cam_cpas_util_vote_bus_client_level(
	struct cam_cpas_bus_client *bus_client, unsigned int level)
{
	int rc = 0;

	if (!bus_client->valid) {
		CAM_ERR(CAM_CPAS, "bus client not valid");
		rc = -EINVAL;
		goto end;
	}

	if (level >= CAM_MAX_VOTE) {
		CAM_ERR(CAM_CPAS,
			"Invalid votelevel=%d,usecases=%d,Bus client=[%s]",
			level, bus_client->common_data.num_usecases,
			bus_client->common_data.name);
		return -EINVAL;
	}

	if (level == bus_client->curr_vote_level)
		goto end;

	rc = cam_soc_bus_client_update_request(bus_client->soc_bus_client,
		level);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Client: %s update request failed rc: %d",
			bus_client->common_data.name, rc);
		goto end;
	}
	bus_client->curr_vote_level = level;

end:
	return rc;
}

static int cam_cpas_util_vote_drv_bus_client_bw(struct cam_cpas_bus_client *bus_client,
	struct cam_cpas_axi_bw_info *curr_vote, struct cam_cpas_axi_bw_info *applied_vote)
{
	int rc = 0;
	const struct camera_debug_settings *cam_debug = NULL;

	if (!bus_client->valid) {
		CAM_ERR(CAM_CPAS, "bus client: %s not valid",
			bus_client->common_data.name);
		rc = -EINVAL;
		goto end;
	}

	mutex_lock(&bus_client->lock);
	if ((curr_vote->drv_vote.high.ab > 0) &&
		(curr_vote->drv_vote.high.ab < CAM_CPAS_AXI_MIN_MNOC_AB_BW))
		curr_vote->drv_vote.high.ab = CAM_CPAS_AXI_MIN_MNOC_AB_BW;

	if ((curr_vote->drv_vote.high.ib > 0) &&
		(curr_vote->drv_vote.high.ib < CAM_CPAS_AXI_MIN_MNOC_IB_BW))
		curr_vote->drv_vote.high.ib = CAM_CPAS_AXI_MIN_MNOC_IB_BW;

	if ((curr_vote->drv_vote.low.ab > 0) &&
		(curr_vote->drv_vote.low.ab < CAM_CPAS_AXI_MIN_MNOC_AB_BW))
		curr_vote->drv_vote.low.ab = CAM_CPAS_AXI_MIN_MNOC_AB_BW;

	if ((curr_vote->drv_vote.low.ib > 0) &&
		(curr_vote->drv_vote.low.ib < CAM_CPAS_AXI_MIN_MNOC_IB_BW))
		curr_vote->drv_vote.low.ib = CAM_CPAS_AXI_MIN_MNOC_IB_BW;

	cam_debug = cam_debug_get_settings();

	if ((curr_vote->drv_vote.high.ab || curr_vote->drv_vote.high.ib ||
		curr_vote->drv_vote.low.ab || curr_vote->drv_vote.low.ib) &&
		cam_debug && cam_debug->cpas_settings.is_updated)
		cam_cpas_process_drv_bw_overrides(bus_client, &curr_vote->drv_vote.high.ab,
			&curr_vote->drv_vote.high.ib, &curr_vote->drv_vote.low.ab,
			&curr_vote->drv_vote.low.ib, &cam_debug->cpas_settings);

	if (debug_drv)
		CAM_INFO(CAM_CPAS, "Bus_client: %s, DRV vote high=[%llu %llu] low=[%llu %llu]",
			bus_client->common_data.name, curr_vote->drv_vote.high.ab,
			curr_vote->drv_vote.high.ib, curr_vote->drv_vote.low.ab,
			curr_vote->drv_vote.low.ib);

	CAM_DBG(CAM_CPAS, "Bus_client: %s, DRV vote high=[%llu %llu] low=[%llu %llu]",
		bus_client->common_data.name, curr_vote->drv_vote.high.ab,
		curr_vote->drv_vote.high.ib, curr_vote->drv_vote.low.ab,
		curr_vote->drv_vote.low.ib);

	rc = cam_soc_bus_client_update_bw(bus_client->soc_bus_client, curr_vote->drv_vote.high.ab,
		curr_vote->drv_vote.high.ib, CAM_SOC_BUS_PATH_DATA_DRV_HIGH);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Update bw failed, Bus path: %s ab[%llu] ib[%llu]",
			cam_soc_bus_path_data_to_str(CAM_SOC_BUS_PATH_DATA_DRV_HIGH),
			curr_vote->drv_vote.high.ab, curr_vote->drv_vote.high.ib);
		goto unlock_client;
	}

	rc = cam_soc_bus_client_update_bw(bus_client->soc_bus_client, curr_vote->drv_vote.low.ab,
		curr_vote->drv_vote.low.ib, CAM_SOC_BUS_PATH_DATA_DRV_LOW);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Update bw failed, Bus path: %s ab[%llu] ib[%llu]",
			cam_soc_bus_path_data_to_str(CAM_SOC_BUS_PATH_DATA_DRV_LOW),
			curr_vote->drv_vote.low.ab, curr_vote->drv_vote.low.ib);
		goto unlock_client;
	}

	if (applied_vote)
		memcpy(applied_vote, curr_vote, sizeof(struct cam_cpas_axi_bw_info));

unlock_client:
	mutex_unlock(&bus_client->lock);
end:
	return rc;
}

static int cam_cpas_util_vote_hlos_bus_client_bw(
	struct cam_cpas_bus_client *bus_client, uint64_t ab, uint64_t ib,
	bool is_camnoc_bw, uint64_t *applied_ab, uint64_t *applied_ib)
{
	int rc = 0;
	uint64_t min_camnoc_ib_bw = CAM_CPAS_AXI_MIN_CAMNOC_IB_BW;
	const struct camera_debug_settings *cam_debug = NULL;

	if (!bus_client->valid) {
		CAM_ERR(CAM_CPAS, "bus client: %s not valid",
			bus_client->common_data.name);
		rc = -EINVAL;
		goto end;
	}

	if (cam_min_camnoc_ib_bw > 0)
		min_camnoc_ib_bw = (uint64_t)cam_min_camnoc_ib_bw * 1000000L;

	CAM_DBG(CAM_CPAS,
		"Bus_client: %s, cam_min_camnoc_ib_bw = %d, min_camnoc_ib_bw=%llu",
		bus_client->common_data.name, cam_min_camnoc_ib_bw,
		min_camnoc_ib_bw);

	mutex_lock(&bus_client->lock);
	if (is_camnoc_bw) {
		if ((ab > 0) && (ab < CAM_CPAS_AXI_MIN_CAMNOC_AB_BW))
			ab = CAM_CPAS_AXI_MIN_CAMNOC_AB_BW;

		if ((ib > 0) && (ib < min_camnoc_ib_bw))
			ib = min_camnoc_ib_bw;
	} else {
		if ((ab > 0) && (ab < CAM_CPAS_AXI_MIN_MNOC_AB_BW))
			ab = CAM_CPAS_AXI_MIN_MNOC_AB_BW;

		if ((ib > 0) && (ib < CAM_CPAS_AXI_MIN_MNOC_IB_BW))
			ib = CAM_CPAS_AXI_MIN_MNOC_IB_BW;
	}

	cam_debug = cam_debug_get_settings();

	if ((ab || ib) && cam_debug && cam_debug->cpas_settings.is_updated)
		cam_cpas_process_bw_overrides(bus_client, &ab, &ib,
			&cam_debug->cpas_settings);

	rc = cam_soc_bus_client_update_bw(bus_client->soc_bus_client, ab, ib,
		CAM_SOC_BUS_PATH_DATA_HLOS);
	if (rc) {
		CAM_ERR(CAM_CPAS,
			"Update bw failed, Bus path %s ab[%llu] ib[%llu]",
			cam_soc_bus_path_data_to_str(CAM_SOC_BUS_PATH_DATA_HLOS), ab, ib);
		goto unlock_client;
	}

	if (applied_ab)
		*applied_ab = ab;
	if (applied_ib)
		*applied_ib = ib;

unlock_client:
	mutex_unlock(&bus_client->lock);
end:
	return rc;
}

static int cam_cpas_util_register_bus_client(
	struct cam_hw_soc_info *soc_info, struct device_node *dev_node,
	struct cam_cpas_bus_client *bus_client)
{
	int rc = 0;

	rc = cam_soc_bus_client_register(soc_info->pdev, dev_node,
		&bus_client->soc_bus_client, &bus_client->common_data);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Bus client: %s registertion failed ,rc: %d",
			bus_client->common_data.name, rc);
		return rc;
	}
	bus_client->curr_vote_level = 0;
	bus_client->valid = true;
	mutex_init(&bus_client->lock);

	return 0;
}

static int cam_cpas_util_unregister_bus_client(
	struct cam_cpas_bus_client *bus_client)
{
	if (!bus_client->valid) {
		CAM_ERR(CAM_CPAS, "bus client not valid");
		return -EINVAL;
	}

	cam_soc_bus_client_unregister(&bus_client->soc_bus_client);
	bus_client->curr_vote_level = 0;
	bus_client->valid = false;
	mutex_destroy(&bus_client->lock);

	return 0;
}

static int cam_cpas_util_axi_cleanup(struct cam_cpas *cpas_core,
	struct cam_hw_soc_info *soc_info)
{
	int i = 0;

	if (cpas_core->num_axi_ports > CAM_CPAS_MAX_AXI_PORTS) {
		CAM_ERR(CAM_CPAS, "Invalid num_axi_ports: %d",
			cpas_core->num_axi_ports);
		return -EINVAL;
	}

	if (cpas_core->num_camnoc_axi_ports > CAM_CPAS_MAX_AXI_PORTS) {
		CAM_ERR(CAM_CPAS, "Invalid num_camnoc_axi_ports: %d",
			cpas_core->num_camnoc_axi_ports);
		return -EINVAL;
	}

	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		cam_cpas_util_unregister_bus_client(
			&cpas_core->axi_port[i].bus_client);
		of_node_put(cpas_core->axi_port[i].axi_port_node);
		cpas_core->axi_port[i].axi_port_node = NULL;
	}

	for (i = 0; i < cpas_core->num_camnoc_axi_ports; i++) {
		cam_cpas_util_unregister_bus_client(
			&cpas_core->camnoc_axi_port[i].bus_client);
		of_node_put(cpas_core->camnoc_axi_port[i].axi_port_node);
		cpas_core->camnoc_axi_port[i].axi_port_node = NULL;
	}

	return 0;
}

static int cam_cpas_util_axi_setup(struct cam_cpas *cpas_core,
	struct cam_hw_soc_info *soc_info)
{
	int i = 0, rc = 0;
	struct device_node *axi_port_mnoc_node = NULL;
	struct device_node *axi_port_camnoc_node = NULL;

	if (cpas_core->num_axi_ports > CAM_CPAS_MAX_AXI_PORTS) {
		CAM_ERR(CAM_CPAS, "Invalid num_axi_ports: %d",
			cpas_core->num_axi_ports);
		return -EINVAL;
	}

	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		axi_port_mnoc_node = cpas_core->axi_port[i].axi_port_node;
		rc = cam_cpas_util_register_bus_client(soc_info,
			axi_port_mnoc_node, &cpas_core->axi_port[i].bus_client);
		if (rc)
			goto bus_register_fail;
	}
	for (i = 0; i < cpas_core->num_camnoc_axi_ports; i++) {
		axi_port_camnoc_node =
			cpas_core->camnoc_axi_port[i].axi_port_node;
		rc = cam_cpas_util_register_bus_client(soc_info,
			axi_port_camnoc_node,
			&cpas_core->camnoc_axi_port[i].bus_client);
		if (rc)
			goto bus_register_fail;
	}

	return 0;
bus_register_fail:
	of_node_put(cpas_core->axi_port[i].axi_port_node);
	return rc;
}

int cam_cpas_util_vote_default_ahb_axi(struct cam_hw_info *cpas_hw,
	int enable)
{
	int rc, i = 0;
	struct cam_cpas *cpas_core = (struct cam_cpas *)cpas_hw->core_info;
	uint64_t ab_bw, ib_bw;
	uint64_t applied_ab_bw = 0, applied_ib_bw = 0;

	rc = cam_cpas_util_vote_bus_client_level(&cpas_core->ahb_bus_client,
		(enable == true) ? CAM_LOWSVS_D1_VOTE : CAM_SUSPEND_VOTE);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Failed in AHB vote, enable=%d, rc=%d",
			enable, rc);
		return rc;
	}

	if (enable) {
		ab_bw = CAM_CPAS_DEFAULT_AXI_BW;
		ib_bw = CAM_CPAS_DEFAULT_AXI_BW;
	} else {
		ab_bw = 0;
		ib_bw = 0;
	}

	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		if (cpas_core->axi_port[i].bus_client.common_data.is_drv_port)
			continue;

		rc = cam_cpas_util_vote_hlos_bus_client_bw(
			&cpas_core->axi_port[i].bus_client,
			ab_bw, ib_bw, false, &applied_ab_bw, &applied_ib_bw);
		if (rc) {
			CAM_ERR(CAM_CPAS,
				"Failed in mnoc vote, enable=%d, rc=%d",
				enable, rc);
			goto remove_ahb_vote;
		}

		cpas_core->axi_port[i].applied_bw.hlos_vote.ab = applied_ab_bw;
		cpas_core->axi_port[i].applied_bw.hlos_vote.ib = applied_ib_bw;
	}

	return 0;
remove_ahb_vote:
	cam_cpas_util_vote_bus_client_level(&cpas_core->ahb_bus_client,
		CAM_SUSPEND_VOTE);
	return rc;
}

static int cam_cpas_hw_reg_write(struct cam_hw_info *cpas_hw,
	uint32_t client_handle, enum cam_cpas_reg_base reg_base,
	uint32_t offset, bool mb, uint32_t value)
{
	struct cam_hw_soc_info *soc_info = &cpas_hw->soc_info;
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_client *cpas_client = NULL;
	int reg_base_index = cpas_core->regbase_index[reg_base];
	uint32_t client_indx = CAM_CPAS_GET_CLIENT_IDX(client_handle);
	int rc = 0;

	if (reg_base_index < 0 || reg_base_index >= soc_info->num_reg_map) {
		CAM_ERR(CAM_CPAS,
			"Invalid reg_base=%d, reg_base_index=%d, num_map=%d",
			reg_base, reg_base_index, soc_info->num_reg_map);
		return -EINVAL;
	}

	if (!CAM_CPAS_CLIENT_VALID(client_indx))
		return -EINVAL;

	mutex_lock(&cpas_core->client_mutex[client_indx]);
	cpas_client = cpas_core->cpas_client[client_indx];

	if (!CAM_CPAS_CLIENT_STARTED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS, "client=[%d][%s][%d] has not started",
			client_indx, cpas_client->data.identifier,
			cpas_client->data.cell_index);
		rc = -EPERM;
		goto unlock_client;
	}

	if (mb)
		cam_io_w_mb(value,
			soc_info->reg_map[reg_base_index].mem_base + offset);
	else
		cam_io_w(value,
			soc_info->reg_map[reg_base_index].mem_base + offset);

unlock_client:
	mutex_unlock(&cpas_core->client_mutex[client_indx]);
	return rc;
}

static int cam_cpas_hw_reg_read(struct cam_hw_info *cpas_hw,
	uint32_t client_handle, enum cam_cpas_reg_base reg_base,
	uint32_t offset, bool mb, uint32_t *value)
{
	struct cam_hw_soc_info *soc_info = &cpas_hw->soc_info;
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_client *cpas_client = NULL;
	int reg_base_index = cpas_core->regbase_index[reg_base];
	uint32_t reg_value;
	uint32_t client_indx = CAM_CPAS_GET_CLIENT_IDX(client_handle);
	int rc = 0;

	if (!value)
		return -EINVAL;

	if (reg_base_index < 0 || reg_base_index >= soc_info->num_reg_map) {
		CAM_ERR(CAM_CPAS,
			"Invalid reg_base=%d, reg_base_index=%d, num_map=%d",
			reg_base, reg_base_index, soc_info->num_reg_map);
		return -EINVAL;
	}

	if (!CAM_CPAS_CLIENT_VALID(client_indx))
		return -EINVAL;

	cpas_client = cpas_core->cpas_client[client_indx];

	if (!CAM_CPAS_CLIENT_STARTED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS, "client=[%d][%s][%d] has not started",
			client_indx, cpas_client->data.identifier,
			cpas_client->data.cell_index);
		return -EPERM;
	}

	if (mb)
		reg_value = cam_io_r_mb(
			soc_info->reg_map[reg_base_index].mem_base + offset);
	else
		reg_value = cam_io_r(
			soc_info->reg_map[reg_base_index].mem_base + offset);

	*value = reg_value;

	return rc;
}

static int cam_cpas_hw_dump_camnoc_buff_fill_info(
	struct cam_hw_info *cpas_hw,
	uint32_t client_handle)
{
	int rc = 0, i, camnoc_idx;
	uint32_t val = 0, client_idx = CAM_CPAS_GET_CLIENT_IDX(client_handle);
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_camnoc_info *camnoc_info;
	char log_buf[CAM_CPAS_LOG_BUF_LEN];
	size_t len;

	if (!CAM_CPAS_CLIENT_VALID(client_idx)) {
		CAM_ERR(CAM_CPAS, "Invalid client idx: %u", client_idx);
		return -EPERM;
	}

	/* log buffer fill level of both RT/NRT NIU */
	for (camnoc_idx = 0; camnoc_idx < cpas_core->num_valid_camnoc; camnoc_idx++) {
		log_buf[0] = '\0';
		len = 0;
		camnoc_info = cpas_core->camnoc_info[camnoc_idx];

		for (i = 0; i < camnoc_info->specific_size; i++) {
			if ((!camnoc_info->specific[i].enable) ||
				(!camnoc_info->specific[i].maxwr_low.enable))
				continue;

			rc = cam_cpas_hw_reg_read(cpas_hw, client_handle,
				camnoc_info->reg_base,
				camnoc_info->specific[i].maxwr_low.offset, true, &val);
			if (rc)
				break;

			len += scnprintf((log_buf + len), (CAM_CPAS_LOG_BUF_LEN - len),
				" %s:[%d %d]", camnoc_info->specific[i].port_name,
				(val & 0x7FF), (val & 0x7F0000) >> 16);
		}

		CAM_INFO(CAM_CPAS, "%s Fill level [Queued Pending] %s",
			camnoc_info->camnoc_name, log_buf);
	}

	return rc;
}

static void cam_cpas_print_smart_qos_priority(
	struct cam_hw_info *cpas_hw)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_hw_soc_info *soc_info = &cpas_hw->soc_info;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_camnoc_info *camnoc_info = NULL;
	struct cam_cpas_tree_node *niu_node;
	uint8_t i;
	int32_t reg_indx;
	char log_buf[CAM_CPAS_LOG_BUF_LEN] = {0};
	size_t len = 0;
	uint32_t val_low = 0, val_high = 0;

	/* Smart QOS only apply to CPAS RT nius */
	camnoc_info = cpas_core->camnoc_info[cpas_core->camnoc_rt_idx];
	reg_indx = cpas_core->regbase_index[camnoc_info->reg_base];

	for (i = 0; i < soc_private->smart_qos_info->num_rt_wr_nius; i++) {
		niu_node = soc_private->smart_qos_info->rt_wr_niu_node[i];

		val_high = cam_io_r_mb(soc_info->reg_map[reg_indx].mem_base +
			niu_node->pri_lut_high_offset);

		val_low = cam_io_r_mb(soc_info->reg_map[reg_indx].mem_base +
			niu_node->pri_lut_low_offset);

		len += scnprintf((log_buf + len), (CAM_CPAS_LOG_BUF_LEN - len),
			" [%s:high 0x%x low 0x%x]", niu_node->node_name,
			val_high, val_low);
	}

	CAM_INFO(CAM_CPAS, "%s SmartQoS [Node Pri_lut] %s", camnoc_info->camnoc_name, log_buf);
}

static bool cam_cpas_is_new_rt_bw_lower(
	const struct cam_hw_info *cpas_hw)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	int i;
	struct cam_cpas_axi_port *temp_axi_port = NULL;
	uint64_t applied_total = 0, new_total = 0;

	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		temp_axi_port = &cpas_core->axi_port[i];

		if (!temp_axi_port->is_rt)
			continue;

		if (temp_axi_port->bus_client.common_data.is_drv_port) {
			CAM_DBG(CAM_PERF, "Port %s DRV ab applied [%llu %llu] new [%llu %llu]",
				temp_axi_port->axi_port_name,
				temp_axi_port->applied_bw.drv_vote.high.ab,
				temp_axi_port->applied_bw.drv_vote.low.ab,
				temp_axi_port->curr_bw.drv_vote.high.ab,
				temp_axi_port->curr_bw.drv_vote.low.ab);

			applied_total += temp_axi_port->applied_bw.drv_vote.high.ab;
			new_total += temp_axi_port->curr_bw.drv_vote.high.ab;
		} else {
			CAM_DBG(CAM_PERF, "Port %s HLOS ab applied %llu new %llu",
				temp_axi_port->axi_port_name,
				temp_axi_port->applied_bw.hlos_vote.ab,
				temp_axi_port->curr_bw.hlos_vote.ab);

			applied_total += temp_axi_port->applied_bw.hlos_vote.ab;
			new_total += temp_axi_port->curr_bw.hlos_vote.ab;
		}
	}

	return (new_total < applied_total) ? true : false;
}

static void cam_cpas_reset_niu_priorities(
	struct cam_hw_info *cpas_hw)
{
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	uint8_t i;

	for (i = 0; i < soc_private->smart_qos_info->num_rt_wr_nius; i++) {
		soc_private->smart_qos_info->rt_wr_niu_node[i]->applied_priority_low = 0x0;
		soc_private->smart_qos_info->rt_wr_niu_node[i]->applied_priority_high = 0x0;
	}
}

static bool cam_cpas_calculate_smart_qos(
	struct cam_hw_info *cpas_hw)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_cpas_tree_node *niu_node;
	uint8_t i;
	bool needs_update = false;
	uint64_t bw_per_kb, total_camnoc_bw, max_bw_per_kb = 0, remainder, ramp_val;
	uint64_t total_bw_per_kb = 0, total_bw_ramp_val = 0;
	int8_t pos;
	uint64_t priority;
	uint8_t val, clamp_threshold;

	for (i = 0; i < soc_private->smart_qos_info->num_rt_wr_nius; i++) {
		niu_node = soc_private->smart_qos_info->rt_wr_niu_node[i];

		bw_per_kb = niu_node->bw_info[CAM_CPAS_PORT_HLOS_DRV].hlos_vote.camnoc;

		if (soc_private->enable_cam_clk_drv)
			bw_per_kb += niu_node->bw_info[CAM_CPAS_PORT_DRV_0].drv_vote.high.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_0].drv_vote.low.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_1].drv_vote.high.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_1].drv_vote.low.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_2].drv_vote.high.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_2].drv_vote.low.camnoc;

		total_camnoc_bw = bw_per_kb;
		remainder = do_div(bw_per_kb, niu_node->niu_size);
		total_bw_per_kb += bw_per_kb;

		if (max_bw_per_kb < bw_per_kb)
			max_bw_per_kb = bw_per_kb;

		CAM_DBG(CAM_PERF,
			"NIU[%d][%s]camnoc_bw %llu, niu_size %u, init_bw_per_kb %lld, remainder %lld, max_bw_per_kb %lld, total_bw_per_kb %lld",
			i, niu_node->node_name, total_camnoc_bw, niu_node->niu_size,
			bw_per_kb, remainder, max_bw_per_kb, total_bw_per_kb);
	}

	if (!max_bw_per_kb) {
		CAM_DBG(CAM_PERF, "No valid bw on NIU nodes");
		return false;
	}

	for (i = 0; i < soc_private->smart_qos_info->num_rt_wr_nius; i++) {
		niu_node = soc_private->smart_qos_info->rt_wr_niu_node[i];

		bw_per_kb = niu_node->bw_info[CAM_CPAS_PORT_HLOS_DRV].hlos_vote.camnoc;

		if (soc_private->enable_cam_clk_drv)
			bw_per_kb += niu_node->bw_info[CAM_CPAS_PORT_DRV_0].drv_vote.high.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_0].drv_vote.low.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_1].drv_vote.high.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_1].drv_vote.low.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_2].drv_vote.high.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_2].drv_vote.low.camnoc;

		do_div(bw_per_kb, niu_node->niu_size);

		if ((bw_per_kb * CAM_CPAS_MAX_STRESS_INDICATOR) >
			(total_bw_per_kb *
			soc_private->smart_qos_info->highstress_indicator_th)) {
			clamp_threshold = soc_private->smart_qos_info->moststressed_clamp_th;
			CAM_DBG(CAM_PERF, "Current niu clamp_threshold=%d",
				clamp_threshold);
		} else {
			ramp_val = soc_private->smart_qos_info->bw_ratio_scale_factor *
				bw_per_kb;
			ramp_val = ramp_val *
				(soc_private->smart_qos_info->leaststressed_clamp_th -
				soc_private->smart_qos_info->moststressed_clamp_th);

			/*
			 * Stress indicator threshold may have a float type value
			 * such as 0.5 according max stress indicator value 1,
			 * we take in percentages to avoid float type calcaulate.
			 */
			total_bw_ramp_val = total_bw_per_kb *
				(soc_private->smart_qos_info->highstress_indicator_th -
				soc_private->smart_qos_info->lowstress_indicator_th) /
				CAM_CPAS_MAX_STRESS_INDICATOR;

			CAM_DBG(CAM_PERF, "ramp_val=%lld, total_bw_ramp_val=%lld",
				ramp_val, total_bw_ramp_val);

			remainder = do_div(ramp_val, total_bw_ramp_val);
			/* round the value */
			if ((remainder * 2) >= total_bw_ramp_val)
				ramp_val += 1;

			val = (uint8_t)(ramp_val);
			clamp_threshold =
				soc_private->smart_qos_info->leaststressed_clamp_th - val;

			CAM_DBG(CAM_PERF, "Current niu clamp_threshold=%d, val=%d",
				clamp_threshold, val);
		}

		priority = 0;

		for (pos = 15; pos >= clamp_threshold; pos--) {
			val = soc_private->smart_qos_info->rt_wr_priority_clamp;
			priority = priority << 4;
			priority |= val;

			CAM_DBG(CAM_PERF, "pos=%d, val=0x%x, priority=0x%llx", pos, val, priority);
		}

		for (pos = clamp_threshold - 1; pos >= 0; pos--) {
			if (pos == 0) {
				val = soc_private->smart_qos_info->rt_wr_priority_min;
			} else {
				ramp_val = pos * bw_per_kb;
				/*
				 * Slope factor may have a float type value such as 0.7
				 * according max slope factor value 1,
				 * we take in percentages to avoid float type calcaulate.
				 */
				ramp_val = ramp_val *
					soc_private->smart_qos_info->rt_wr_slope_factor /
					CAM_CPAS_MAX_SLOPE_FACTOR;
				remainder = do_div(ramp_val, max_bw_per_kb);

				CAM_DBG(CAM_PERF,
					"pos=%d, bw_per_kb=%lld, pos*bw_per_kb=%lld, ramp_val=%lld, remainder=%lld, max_bw_per_kb=%lld",
					pos, bw_per_kb, pos * bw_per_kb, ramp_val, remainder,
					max_bw_per_kb);

				/* round the value */
				if ((remainder * 2) >= max_bw_per_kb)
					ramp_val += 1;

				val = (uint8_t)(ramp_val);
				val += soc_private->smart_qos_info->rt_wr_priority_min;
				val = min(val, soc_private->smart_qos_info->rt_wr_priority_max);
			}

			priority = priority << 4;
			priority |= val;

			CAM_DBG(CAM_PERF, "pos=%d, val=0x%x, priority=0x%llx", pos, val, priority);
		}

		niu_node->curr_priority_low = (uint32_t)(priority & 0xFFFFFFFF);
		niu_node->curr_priority_high = (uint32_t)((priority >> 32) & 0xFFFFFFFF);

		if ((niu_node->curr_priority_low != niu_node->applied_priority_low) ||
			(niu_node->curr_priority_high != niu_node->applied_priority_high))
			needs_update = true;

		CAM_DBG(CAM_PERF,
			"Node[%d][%s]Priority applied high 0x%x low 0x%x, new high 0x%x low 0x%x, needs_update %d",
			i, niu_node->node_name,
			niu_node->applied_priority_high, niu_node->applied_priority_low,
			niu_node->curr_priority_high, niu_node->curr_priority_low,
			needs_update);
	}

	if (cpas_core->smart_qos_dump && needs_update) {
		uint64_t total_camnoc;
		for (i = 0; i < soc_private->smart_qos_info->num_rt_wr_nius; i++) {
			niu_node = soc_private->smart_qos_info->rt_wr_niu_node[i];

			total_camnoc = niu_node->bw_info[CAM_CPAS_PORT_HLOS_DRV].hlos_vote.camnoc;

			if (soc_private->enable_cam_clk_drv)
				total_camnoc +=
				niu_node->bw_info[CAM_CPAS_PORT_DRV_0].drv_vote.high.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_0].drv_vote.low.camnoc  +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_1].drv_vote.high.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_1].drv_vote.low.camnoc  +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_2].drv_vote.high.camnoc +
				niu_node->bw_info[CAM_CPAS_PORT_DRV_2].drv_vote.low.camnoc;

			CAM_INFO(CAM_PERF,
				"Node[%d][%s] camnoc_bw=%lld, niu_size=%d, offset high 0x%x, low 0x%x, Priority new high 0x%x low 0x%x, applied high 0x%x low 0x%x",
				i, niu_node->node_name, total_camnoc, niu_node->niu_size,
				niu_node->pri_lut_high_offset, niu_node->pri_lut_low_offset,
				niu_node->curr_priority_high, niu_node->curr_priority_low,
				niu_node->applied_priority_high, niu_node->applied_priority_low);
		}
	}

	return needs_update;
}

static int cam_cpas_apply_smart_qos(
	struct cam_hw_info *cpas_hw)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_hw_soc_info *soc_info = &cpas_hw->soc_info;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_cpas_tree_node *niu_node;
	struct cam_camnoc_info *camnoc_info;
	uint8_t i;
	int32_t reg_indx, cam_qos_cnt = 0, ret = 0;
	struct qcom_scm_camera_qos scm_buf[QCOM_SCM_CAMERA_MAX_QOS_CNT] = {0};

	if (cpas_core->smart_qos_dump) {
		CAM_INFO(CAM_PERF, "Printing SmartQos values before update");
		cam_cpas_print_smart_qos_priority(cpas_hw);
	}

	/* Smart QOS only apply to CPAS RT nius */
	camnoc_info = cpas_core->camnoc_info[cpas_core->camnoc_rt_idx];
	reg_indx = cpas_core->regbase_index[camnoc_info->reg_base];

	for (i = 0; i < soc_private->smart_qos_info->num_rt_wr_nius; i++) {
		niu_node = soc_private->smart_qos_info->rt_wr_niu_node[i];

		if (niu_node->curr_priority_high != niu_node->applied_priority_high) {
			if (!soc_private->enable_secure_qos_update) {
				cam_io_w_mb(niu_node->curr_priority_high,
					soc_info->reg_map[reg_indx].mem_base +
					niu_node->pri_lut_high_offset);
			} else {
				scm_buf[cam_qos_cnt].offset = niu_node->pri_lut_high_offset;
				scm_buf[cam_qos_cnt].val = niu_node->curr_priority_high;
				cam_qos_cnt++;
			}

			niu_node->applied_priority_high = niu_node->curr_priority_high;
		}

		if (niu_node->curr_priority_low != niu_node->applied_priority_low) {
			if (!soc_private->enable_secure_qos_update) {
				cam_io_w_mb(niu_node->curr_priority_low,
					soc_info->reg_map[reg_indx].mem_base +
					niu_node->pri_lut_low_offset);
			} else {
				scm_buf[cam_qos_cnt].offset = niu_node->pri_lut_low_offset;
				scm_buf[cam_qos_cnt].val = niu_node->curr_priority_low;
				cam_qos_cnt++;
			}

			niu_node->applied_priority_low = niu_node->curr_priority_low;
		}

		if (soc_private->enable_secure_qos_update && cam_qos_cnt) {
			CAM_DBG(CAM_PERF, "Updating secure camera smartOos count: %d", cam_qos_cnt);
			ret = cam_update_camnoc_qos_settings(CAM_QOS_UPDATE_TYPE_SMART,
				cam_qos_cnt, scm_buf);
			if (ret) {
				CAM_ERR(CAM_PERF, "Secure camera smartOos update failed:%d", ret);
				return ret;
			}
			CAM_DBG(CAM_PERF, "Updated secure camera smartOos");
			cam_qos_cnt = 0;
		}
	}

	if (cpas_core->smart_qos_dump) {
		CAM_INFO(CAM_PERF, "Printing SmartQos values after update");
		cam_cpas_print_smart_qos_priority(cpas_hw);
	}

	return 0;
}

static int cam_cpas_util_camnoc_drv_idx_to_cesta_hw_client_idx(int camnoc_drv_idx)
{
	int hw_client = -1;

	switch (camnoc_drv_idx) {
	case CAM_CPAS_PORT_HLOS_DRV:
		hw_client = -1;
		break;
	case CAM_CPAS_PORT_DRV_0:
		hw_client = 0;
		break;
	case CAM_CPAS_PORT_DRV_1:
		hw_client = 1;
		break;
	case CAM_CPAS_PORT_DRV_2:
		hw_client = 2;
		break;
	default:
		CAM_WARN(CAM_CPAS, "Invalid drv idx %d", camnoc_drv_idx);
		break;
	}

	return hw_client;
}

static int cam_cpas_util_set_camnoc_axi_drv_clk_rate(struct cam_hw_soc_info *soc_info,
	struct cam_cpas_private_soc *soc_private, struct cam_cpas *cpas_core, int cesta_drv_idx)
{
	struct cam_cpas_tree_node *tree_node = NULL;
	uint64_t req_drv_high_camnoc_bw = 0, intermediate_drv_high_result = 0,
		req_drv_low_camnoc_bw = 0, intermediate_drv_low_result = 0;
	int64_t drv_high_clk_rate = 0, drv_low_clk_rate = 0;
	int i, rc = 0;

	if (!soc_private->enable_cam_clk_drv) {
		CAM_ERR(CAM_CPAS, "Clk DRV not enabled, can't set clk rates through cesta APIs");
		return -EINVAL;
	}

	for (i = 0; i < CAM_CPAS_MAX_TREE_NODES; i++) {
		tree_node = soc_private->tree_node[i];
		if (!tree_node ||
			!tree_node->camnoc_max_needed)
			continue;

		if (req_drv_high_camnoc_bw <
			(tree_node->bw_info[cesta_drv_idx].drv_vote.high.camnoc *
			tree_node->bus_width_factor))
			req_drv_high_camnoc_bw =
				(tree_node->bw_info[cesta_drv_idx].drv_vote.high.camnoc *
				tree_node->bus_width_factor);

		if (req_drv_low_camnoc_bw <
			(tree_node->bw_info[cesta_drv_idx].drv_vote.low.camnoc *
			tree_node->bus_width_factor))
			req_drv_low_camnoc_bw =
				(tree_node->bw_info[cesta_drv_idx].drv_vote.low.camnoc *
				tree_node->bus_width_factor);
	}

	intermediate_drv_high_result = req_drv_high_camnoc_bw *
		soc_private->camnoc_axi_clk_bw_margin;
	intermediate_drv_low_result = req_drv_low_camnoc_bw *
		soc_private->camnoc_axi_clk_bw_margin;
	do_div(intermediate_drv_high_result, 100);
	do_div(intermediate_drv_low_result, 100);
	req_drv_high_camnoc_bw += intermediate_drv_high_result;
	req_drv_low_camnoc_bw += intermediate_drv_low_result;

	/*
	 * Since all low votes are considered as part of high votes as well, add low camnoc bw
	 * to final requested high camnoc bw value.
	 */
	req_drv_high_camnoc_bw += req_drv_low_camnoc_bw;

	intermediate_drv_high_result = req_drv_high_camnoc_bw;
	intermediate_drv_low_result = req_drv_low_camnoc_bw;
	do_div(intermediate_drv_high_result, soc_private->camnoc_bus_width);
	do_div(intermediate_drv_low_result, soc_private->camnoc_bus_width);
	drv_high_clk_rate = intermediate_drv_high_result;
	drv_low_clk_rate = intermediate_drv_low_result;

	if (cpas_core->streamon_clients) {
		int hw_client_idx;

		/*
		 * cesta_drv_idx is based on enum we set in dtsi properties which is +1 of actual
		 * corresponding hw client index
		 */
		hw_client_idx = cam_cpas_util_camnoc_drv_idx_to_cesta_hw_client_idx(cesta_drv_idx);
		if (hw_client_idx == -1) {
			CAM_ERR(CAM_CPAS, "Invalid hw client idx %d, cesta_drv_idx %d",
				hw_client_idx, cesta_drv_idx);
			return rc;
		}

		if (debug_drv)
			CAM_INFO(CAM_PERF,
				"Setting camnoc axi cesta clk rate[BW Clk] : High [%llu %lld] Low [%llu %lld] cesta/hw_client_idx:[%d][%d]",
				req_drv_high_camnoc_bw, drv_high_clk_rate, req_drv_low_camnoc_bw,
				drv_low_clk_rate, cesta_drv_idx, hw_client_idx);
		else
			CAM_DBG(CAM_PERF,
				"Setting camnoc axi cesta clk rate[BW Clk] : High [%llu %lld] Low [%llu %lld] cesta/hw_client_idx:[%d][%d]",
				req_drv_high_camnoc_bw, drv_high_clk_rate, req_drv_low_camnoc_bw,
				drv_low_clk_rate, cesta_drv_idx, hw_client_idx);

		rc = cam_soc_util_set_src_clk_rate(soc_info, hw_client_idx,
			drv_high_clk_rate, drv_low_clk_rate);
		if (rc) {
			CAM_ERR(CAM_CPAS,
				"Failed in setting camnoc cesta clk rates[high low]:[%ld %ld] client_idx:%d rc:%d",
				drv_high_clk_rate, drv_low_clk_rate, hw_client_idx,
				rc);
			return rc;
		}

		cpas_core->applied_camnoc_axi_rate.hw_client[hw_client_idx].high =
			drv_high_clk_rate;
		cpas_core->applied_camnoc_axi_rate.hw_client[hw_client_idx].low =
			drv_low_clk_rate;

		if (debug_drv)
			CAM_INFO(CAM_PERF, "Triggering channel switch for cesta client %d",
				hw_client_idx);
		else
			CAM_DBG(CAM_PERF, "Triggering channel switch for cesta client %d",
				hw_client_idx);

		rc = cam_soc_util_cesta_channel_switch(hw_client_idx, "cpas_update");
		if (rc) {
			CAM_ERR(CAM_CPAS, "Failed to apply power states for cesta client:%d rc:%d",
				hw_client_idx, rc);
			return rc;
		}
	}

	return rc;
}

static int cam_cpas_util_set_camnoc_axi_hlos_clk_rate(struct cam_hw_soc_info *soc_info,
	struct cam_cpas_private_soc *soc_private, struct cam_cpas *cpas_core)
{
	struct cam_cpas_tree_node *tree_node = NULL;
	uint64_t req_hlos_camnoc_bw = 0, intermediate_hlos_result = 0;
	int64_t hlos_clk_rate = 0;
	int i, rc = 0;
	const struct camera_debug_settings *cam_debug = NULL;

	for (i = 0; i < CAM_CPAS_MAX_TREE_NODES; i++) {
		tree_node = soc_private->tree_node[i];
		if (!tree_node || !tree_node->camnoc_max_needed)
			continue;

		if (req_hlos_camnoc_bw <
			(tree_node->bw_info[CAM_CPAS_PORT_HLOS_DRV].hlos_vote.camnoc *
			tree_node->bus_width_factor)) {
			req_hlos_camnoc_bw =
				(tree_node->bw_info[CAM_CPAS_PORT_HLOS_DRV].hlos_vote.camnoc *
				tree_node->bus_width_factor);
		}
	}

	intermediate_hlos_result = req_hlos_camnoc_bw * soc_private->camnoc_axi_clk_bw_margin;
	do_div(intermediate_hlos_result, 100);
	req_hlos_camnoc_bw += intermediate_hlos_result;

	if (cpas_core->streamon_clients && (req_hlos_camnoc_bw == 0)) {
		CAM_DBG(CAM_CPAS,
			"Set min vote if streamon_clients is non-zero : streamon_clients=%d",
			cpas_core->streamon_clients);
		req_hlos_camnoc_bw = CAM_CPAS_DEFAULT_AXI_BW;
	}

	if ((req_hlos_camnoc_bw > 0) && (req_hlos_camnoc_bw < soc_private->camnoc_axi_min_ib_bw))
		req_hlos_camnoc_bw = soc_private->camnoc_axi_min_ib_bw;

	cam_debug = cam_debug_get_settings();
	if (cam_debug && cam_debug->cpas_settings.camnoc_bw) {
		if (cam_debug->cpas_settings.camnoc_bw < soc_private->camnoc_bus_width)
			req_hlos_camnoc_bw = soc_private->camnoc_bus_width;

		else
			req_hlos_camnoc_bw = cam_debug->cpas_settings.camnoc_bw;
		CAM_INFO(CAM_CPAS, "Overriding camnoc bw: %llu", req_hlos_camnoc_bw);
	}

	intermediate_hlos_result = req_hlos_camnoc_bw;
	do_div(intermediate_hlos_result, soc_private->camnoc_bus_width);
	hlos_clk_rate = intermediate_hlos_result;

	CAM_DBG(CAM_PERF, "Setting camnoc axi HLOS clk rate[BW Clk] : [%llu %lld]",
		req_hlos_camnoc_bw, hlos_clk_rate);

	/*
	 * CPAS hw is not powered on for the first client.
	 * Also, clk_rate will be overwritten with default
	 * value while power on. So, skipping this for first
	 * client.
	 */
	if (cpas_core->streamon_clients) {
		rc = cam_soc_util_set_src_clk_rate(soc_info, CAM_CLK_SW_CLIENT_IDX,
			hlos_clk_rate, 0);
		if (rc)
			CAM_ERR(CAM_CPAS,
				"Failed in setting camnoc axi clk [BW Clk]:[%llu %lld] rc:%d",
				req_hlos_camnoc_bw, hlos_clk_rate, rc);

		cpas_core->applied_camnoc_axi_rate.sw_client = hlos_clk_rate;
	}

	return rc;
}

static int cam_cpas_util_set_camnoc_axi_clk_rate(struct cam_hw_info *cpas_hw,
	int cesta_drv_idx)
{
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_hw_soc_info *soc_info = &cpas_hw->soc_info;
	int rc = 0;

	CAM_DBG(CAM_CPAS, "control_camnoc_axi_clk=%d", soc_private->control_camnoc_axi_clk);

	if (cesta_drv_idx == CAM_CPAS_PORT_HLOS_DRV) {
		rc = cam_cpas_util_set_camnoc_axi_hlos_clk_rate(soc_info,
			soc_private, cpas_core);
		if (rc) {
			CAM_ERR(CAM_CPAS, "Failed in setting hlos clk rate rc: %d",
				rc);
			goto end;
		}
	} else {
		rc = cam_cpas_util_set_camnoc_axi_drv_clk_rate(soc_info,
			soc_private, cpas_core, cesta_drv_idx);
		if (rc) {
			CAM_ERR(CAM_CPAS,
				"Failed in setting drv clk rate drv_idx:%d rc: %d",
				cesta_drv_idx, rc);
			goto end;
		}
	}

end:
	return rc;
}

static int cam_cpas_util_translate_client_paths(
	struct cam_axi_vote *axi_vote)
{
	int i;
	uint32_t *path_data_type = NULL;

	if (!axi_vote)
		return -EINVAL;

	for (i = 0; i < axi_vote->num_paths; i++) {
		path_data_type = &axi_vote->axi_path[i].path_data_type;
		/* Update path_data_type from UAPI value to internal value */
		if (*path_data_type >= CAM_CPAS_PATH_DATA_CONSO_OFFSET)
			*path_data_type = CAM_CPAS_MAX_GRAN_PATHS_PER_CLIENT +
				(*path_data_type %
				CAM_CPAS_MAX_GRAN_PATHS_PER_CLIENT);
		else
			*path_data_type %= CAM_CPAS_MAX_GRAN_PATHS_PER_CLIENT;

		if (*path_data_type >= CAM_CPAS_PATH_DATA_MAX) {
			CAM_ERR(CAM_CPAS, "index Invalid: %d", path_data_type);
			return -EINVAL;
		}
	}

	return 0;
}

static int cam_cpas_axi_consolidate_path_votes(
	struct cam_cpas_client *cpas_client,
	struct cam_axi_vote *axi_vote)
{
	int rc = 0, i, k, l;
	struct cam_axi_vote *con_axi_vote = &cpas_client->axi_vote;
	bool path_found = false, cons_entry_found;
	struct cam_cpas_tree_node *curr_tree_node = NULL;
	struct cam_cpas_tree_node *sum_tree_node = NULL;
	uint32_t transac_type;
	uint32_t path_data_type;
	struct cam_cpas_axi_per_path_bw_vote *axi_path;

	con_axi_vote->num_paths = 0;

	for (i = 0; i < axi_vote->num_paths; i++) {
		path_found = false;
		path_data_type = axi_vote->axi_path[i].path_data_type;
		transac_type = axi_vote->axi_path[i].transac_type;

		if ((path_data_type >= CAM_CPAS_PATH_DATA_MAX) ||
			(transac_type >= CAM_CPAS_TRANSACTION_MAX)) {
			CAM_ERR(CAM_CPAS, "Invalid path or transac type: %d %d",
				path_data_type, transac_type);
			return -EINVAL;
		}

		axi_path = &con_axi_vote->axi_path[con_axi_vote->num_paths];

		curr_tree_node =
			cpas_client->tree_node[path_data_type][transac_type];
		if (curr_tree_node) {
			memcpy(axi_path, &axi_vote->axi_path[i],
				sizeof(struct cam_cpas_axi_per_path_bw_vote));
			con_axi_vote->num_paths++;
			continue;
		}

		for (k = 0; k < CAM_CPAS_PATH_DATA_MAX; k++) {
			sum_tree_node = cpas_client->tree_node[k][transac_type];

			if (!sum_tree_node)
				continue;

			if (sum_tree_node->constituent_paths[path_data_type]) {
				path_found = true;
				/*
				 * Check if corresponding consolidated path
				 * entry is already added into consolidated list
				 */
				cons_entry_found = false;
				for (l = 0; l < con_axi_vote->num_paths; l++) {
					if ((con_axi_vote->axi_path[l].path_data_type == k) &&
					(con_axi_vote->axi_path[l].transac_type == transac_type)) {
						cons_entry_found = true;
						con_axi_vote->axi_path[l].camnoc_bw +=
							axi_vote->axi_path[i].camnoc_bw;

						con_axi_vote->axi_path[l].mnoc_ab_bw +=
							axi_vote->axi_path[i].mnoc_ab_bw;

						con_axi_vote->axi_path[l].mnoc_ib_bw +=
							axi_vote->axi_path[i].mnoc_ib_bw;
						break;
					}
				}

				/* If not found, add a new entry */
				if (!cons_entry_found) {
					axi_path->path_data_type = k;
					axi_path->transac_type = transac_type;
					axi_path->camnoc_bw = axi_vote->axi_path[i].camnoc_bw;
					axi_path->mnoc_ab_bw = axi_vote->axi_path[i].mnoc_ab_bw;
					axi_path->mnoc_ib_bw = axi_vote->axi_path[i].mnoc_ib_bw;
					axi_path->vote_level = axi_vote->axi_path[i].vote_level;
					con_axi_vote->num_paths++;
				}
				break;
			}
		}

		if (!path_found) {
			CAM_ERR(CAM_CPAS,
				"Client [%s][%d] i=%d num_paths=%d Consolidated path not found for path=%d, transac=%d",
				cpas_client->data.identifier, cpas_client->data.cell_index, i,
				axi_vote->num_paths, path_data_type, transac_type);
			return -EINVAL;
		}
	}

	return rc;
}

static int cam_cpas_update_axi_vote_bw(
	struct cam_hw_info *cpas_hw,
	struct cam_cpas_tree_node *cpas_tree_node,
	int ddr_drv_idx, int cesta_drv_idx,
	bool   *mnoc_axi_port_updated,
	bool   *camnoc_axi_port_updated)
{
	int axi_port_idx = -1;
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;

	axi_port_idx = cpas_tree_node->axi_port_idx_arr[ddr_drv_idx];

	if ((axi_port_idx < 0) || (axi_port_idx >= CAM_CPAS_MAX_AXI_PORTS)) {
		CAM_ERR(CAM_CPAS, "Invalid axi_port_idx: %d drv_idx: %d", axi_port_idx,
			ddr_drv_idx);
		return -EINVAL;
	}

	memcpy(&cpas_core->axi_port[axi_port_idx].curr_bw, &cpas_tree_node->bw_info[ddr_drv_idx],
		sizeof(struct cam_cpas_axi_bw_info));

	/* Add low value to high for drv */
	if (ddr_drv_idx > CAM_CPAS_PORT_HLOS_DRV) {
		cpas_core->axi_port[axi_port_idx].curr_bw.drv_vote.high.ab +=
			cpas_core->axi_port[axi_port_idx].curr_bw.drv_vote.low.ab;
		cpas_core->axi_port[axi_port_idx].curr_bw.drv_vote.high.ib +=
			cpas_core->axi_port[axi_port_idx].curr_bw.drv_vote.low.ib;
	}

	mnoc_axi_port_updated[axi_port_idx] = true;

	if (soc_private->control_camnoc_axi_clk)
		return 0;

	if (cesta_drv_idx > CAM_CPAS_PORT_HLOS_DRV)
		cpas_core->camnoc_axi_port[cpas_tree_node->axi_port_idx_arr[CAM_CPAS_PORT_HLOS_DRV]]
			.curr_bw.hlos_vote.camnoc =
			cpas_tree_node->bw_info[cesta_drv_idx].drv_vote.high.camnoc +
			cpas_tree_node->bw_info[cesta_drv_idx].drv_vote.low.camnoc;
	else
		cpas_core->camnoc_axi_port[cpas_tree_node->axi_port_idx_arr[CAM_CPAS_PORT_HLOS_DRV]]
			.curr_bw.hlos_vote.camnoc =
			cpas_tree_node->bw_info[cesta_drv_idx].hlos_vote.camnoc;

	camnoc_axi_port_updated[cpas_tree_node->camnoc_axi_port_idx] = true;
	return 0;
}

static int cam_cpas_camnoc_set_bw_vote(struct cam_hw_info *cpas_hw,
	bool   *camnoc_axi_port_updated)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	int i;
	int rc = 0;
	struct cam_cpas_axi_port *camnoc_axi_port = NULL;
	uint64_t camnoc_bw;
	uint64_t applied_ab = 0, applied_ib = 0;

	/* Below code is executed if we just vote and do not set the clk rate
	 * for camnoc
	 */

	if (cpas_core->num_camnoc_axi_ports > CAM_CPAS_MAX_AXI_PORTS) {
		CAM_ERR(CAM_CPAS, "Invalid num_camnoc_axi_ports: %d",
			cpas_core->num_camnoc_axi_ports);
		return -EINVAL;
	}

	for (i = 0; i < cpas_core->num_camnoc_axi_ports; i++) {
		if (camnoc_axi_port_updated[i])
			camnoc_axi_port = &cpas_core->camnoc_axi_port[i];
		else
			continue;

		CAM_DBG(CAM_PERF, "Port[%s] : camnoc_bw=%lld",
			camnoc_axi_port->axi_port_name,
			camnoc_axi_port->curr_bw.hlos_vote.camnoc);

		if (camnoc_axi_port->curr_bw.hlos_vote.camnoc)
			camnoc_bw = camnoc_axi_port->curr_bw.hlos_vote.camnoc;
		else if (camnoc_axi_port->additional_bw)
			camnoc_bw = camnoc_axi_port->additional_bw;
		else if (cpas_core->streamon_clients)
			camnoc_bw = CAM_CPAS_DEFAULT_AXI_BW;
		else
			camnoc_bw = 0;

		rc = cam_cpas_util_vote_hlos_bus_client_bw(
			&camnoc_axi_port->bus_client,
			0, camnoc_bw, true, &applied_ab, &applied_ib);

		CAM_DBG(CAM_CPAS,
			"camnoc vote camnoc_bw[%llu] rc=%d %s",
			camnoc_bw, rc, camnoc_axi_port->axi_port_name);
		if (rc) {
			CAM_ERR(CAM_CPAS,
				"Failed in camnoc vote camnoc_bw[%llu] rc=%d",
				camnoc_bw, rc);
			break;
		}

		camnoc_axi_port->applied_bw.hlos_vote.ab = applied_ab;
		camnoc_axi_port->applied_bw.hlos_vote.ib = applied_ib;
	}
	return rc;
}

static int cam_cpas_util_apply_client_axi_vote(
	struct cam_hw_info *cpas_hw,
	struct cam_cpas_client *cpas_client,
	struct cam_axi_vote *axi_vote, uint32_t apply_type)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_axi_vote *con_axi_vote = NULL;
	struct cam_cpas_axi_port *mnoc_axi_port = NULL;
	struct cam_cpas_tree_node *curr_tree_node = NULL;
	struct cam_cpas_tree_node *par_tree_node = NULL;
	uint32_t transac_type;
	uint32_t path_data_type;
	bool mnoc_axi_port_updated[CAM_CPAS_MAX_AXI_PORTS] = {false};
	bool camnoc_axi_port_updated[CAM_CPAS_MAX_AXI_PORTS] = {false};
	struct cam_cpas_axi_bw_info curr_mnoc_old = {0}, par_mnoc_old = {0}, curr_camnoc_old = {0},
		par_camnoc_old = {0}, curr_port_bw = {0}, applied_port_bw = {0};
	int rc = 0, i = 0, ddr_drv_idx, merge_type_factor = 1;
	bool apply_smart_qos = false;
	bool rt_bw_updated = false;
	bool camnoc_unchanged;
	int cesta_drv_idx = CAM_CPAS_PORT_HLOS_DRV;
	int first_ddr_drv_idx = -1, first_cesta_drv_idx = -1;

	mutex_lock(&cpas_core->tree_lock);
	if (!cpas_client->tree_node_valid) {
		/*
		 * This is by assuming apply_client_axi_vote is called
		 * for these clients from only cpas_start, cpas_stop.
		 * not called from hw_update_axi_vote
		 */
		for (i = 0; i < cpas_core->num_axi_ports; i++) {
			if (cpas_core->axi_port[i].bus_client.common_data.is_drv_port)
				continue;

			if (axi_vote->axi_path[0].mnoc_ab_bw) {
				/* start case */
				cpas_core->axi_port[i].additional_bw +=
					CAM_CPAS_DEFAULT_AXI_BW;
			} else {
				/* stop case */
				cpas_core->axi_port[i].additional_bw -=
					CAM_CPAS_DEFAULT_AXI_BW;
			}
			mnoc_axi_port_updated[i] = true;
		}

		for (i = 0; i < cpas_core->num_camnoc_axi_ports; i++) {
			if (axi_vote->axi_path[0].camnoc_bw) {
				/* start case */
				cpas_core->camnoc_axi_port[i].additional_bw +=
					CAM_CPAS_DEFAULT_AXI_BW;
			} else {
				/* stop case */
				cpas_core->camnoc_axi_port[i].additional_bw -=
					CAM_CPAS_DEFAULT_AXI_BW;
			}
			camnoc_axi_port_updated[i] = true;
		}

		goto vote_start_clients;
	}

	rc = cam_cpas_axi_consolidate_path_votes(cpas_client, axi_vote);
	if (rc) {
		CAM_ERR(CAM_PERF, "Failed in bw consolidation, Client [%s][%d]",
			cpas_client->data.identifier,
			cpas_client->data.cell_index);
		goto unlock_tree;
	}

	con_axi_vote = &cpas_client->axi_vote;

	cam_cpas_dump_axi_vote_info(cpas_client, "Consolidated Vote", con_axi_vote);
	cam_cpas_dump_full_tree_state(cpas_hw, "BeforeClientVoteUpdate");

	/* Traverse through node tree and update bw vote values */
	for (i = 0; i < con_axi_vote->num_paths; i++) {
		camnoc_unchanged = false;
		path_data_type = con_axi_vote->axi_path[i].path_data_type;
		transac_type = con_axi_vote->axi_path[i].transac_type;
		curr_tree_node = cpas_client->tree_node[path_data_type][transac_type];
		ddr_drv_idx = curr_tree_node->drv_voting_idx;
		cesta_drv_idx = curr_tree_node->drv_voting_idx;

		if (!soc_private->enable_cam_ddr_drv || cpas_core->force_hlos_drv) {
			ddr_drv_idx = CAM_CPAS_PORT_HLOS_DRV;
			cesta_drv_idx = CAM_CPAS_PORT_HLOS_DRV;
		} else if (!soc_private->enable_cam_clk_drv || cpas_core->force_cesta_sw_client) {
			cesta_drv_idx = CAM_CPAS_PORT_HLOS_DRV;
		}

		if ((ddr_drv_idx < 0) || (ddr_drv_idx > CAM_CPAS_PORT_DRV_2) ||
			(cesta_drv_idx < 0) || (cesta_drv_idx > CAM_CPAS_PORT_DRV_2)) {
			CAM_ERR(CAM_CPAS, "Invalid drv idx : ddr_drv_idx=%d, cesta_drv_idx=%d",
				ddr_drv_idx, cesta_drv_idx);
			goto unlock_tree;
		}

		if (i == 0) {
			first_ddr_drv_idx = ddr_drv_idx;
			first_cesta_drv_idx = cesta_drv_idx;
		} else if ((first_ddr_drv_idx != ddr_drv_idx) ||
			(first_cesta_drv_idx != cesta_drv_idx)) {
			/*
			 * drv indices won't change for a given client for different paths in a
			 * given axi vote update
			 */
			CAM_WARN(CAM_CPAS, "DRV indices different : DDR: %d, %d, CESTA %d %d",
				first_ddr_drv_idx, ddr_drv_idx, first_cesta_drv_idx, cesta_drv_idx);
		}

		memcpy(&curr_camnoc_old, &curr_tree_node->bw_info[cesta_drv_idx],
					sizeof(struct cam_cpas_axi_bw_info));
		memcpy(&curr_mnoc_old, &curr_tree_node->bw_info[ddr_drv_idx],
			sizeof(struct cam_cpas_axi_bw_info));
		cam_cpas_dump_tree_vote_info(cpas_hw, curr_tree_node, "Level0 before update",
			ddr_drv_idx, cesta_drv_idx);

		/* Check and update camnoc bw first */
		if (con_axi_vote->axi_path[i].vote_level == CAM_CPAS_VOTE_LEVEL_HIGH) {
			if ((apply_type != CAM_CPAS_APPLY_TYPE_STOP) &&
				(curr_tree_node->bw_info[cesta_drv_idx].drv_vote.high.camnoc ==
				con_axi_vote->axi_path[i].camnoc_bw)) {
				camnoc_unchanged = true;
				goto update_l0_mnoc;
			}

			curr_tree_node->bw_info[cesta_drv_idx].drv_vote.high.camnoc =
				con_axi_vote->axi_path[i].camnoc_bw;
			curr_tree_node->bw_info[cesta_drv_idx].drv_vote.low.camnoc = 0;
		} else {
			if (cesta_drv_idx > CAM_CPAS_PORT_HLOS_DRV) {
				if ((apply_type != CAM_CPAS_APPLY_TYPE_STOP) &&
					(curr_tree_node->bw_info[cesta_drv_idx].drv_vote.low.camnoc
					== con_axi_vote->axi_path[i].camnoc_bw)) {
					camnoc_unchanged = true;
					goto update_l0_mnoc;
				}

				curr_tree_node->bw_info[cesta_drv_idx].drv_vote.low.camnoc =
					con_axi_vote->axi_path[i].camnoc_bw;
				curr_tree_node->bw_info[cesta_drv_idx].drv_vote.high.camnoc = 0;
			} else {
				if (curr_tree_node->bw_info[cesta_drv_idx].hlos_vote.camnoc ==
					con_axi_vote->axi_path[i].camnoc_bw) {
					camnoc_unchanged = true;
					goto update_l0_mnoc;
				}

				curr_tree_node->bw_info[cesta_drv_idx].hlos_vote.camnoc =
					con_axi_vote->axi_path[i].camnoc_bw;
			}
		}

update_l0_mnoc:
		/* Check and update mnoc ab and ib */
		if (con_axi_vote->axi_path[i].vote_level == CAM_CPAS_VOTE_LEVEL_HIGH) {
			if ((apply_type != CAM_CPAS_APPLY_TYPE_STOP) && camnoc_unchanged &&
				(curr_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ab ==
				con_axi_vote->axi_path[i].mnoc_ab_bw) &&
				(curr_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ib ==
				con_axi_vote->axi_path[i].mnoc_ib_bw))
				continue;

			curr_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ab =
				con_axi_vote->axi_path[i].mnoc_ab_bw;
			curr_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ib =
				con_axi_vote->axi_path[i].mnoc_ib_bw;
			curr_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ab = 0;
			curr_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ib = 0;
		} else {
			if (ddr_drv_idx > CAM_CPAS_PORT_HLOS_DRV) {
				if ((apply_type != CAM_CPAS_APPLY_TYPE_STOP) && camnoc_unchanged &&
					(curr_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ab ==
					con_axi_vote->axi_path[i].mnoc_ab_bw) &&
					(curr_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ib ==
					con_axi_vote->axi_path[i].mnoc_ib_bw))
					continue;

				curr_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ab =
					con_axi_vote->axi_path[i].mnoc_ab_bw;
				curr_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ib =
					con_axi_vote->axi_path[i].mnoc_ib_bw;
				curr_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ab = 0;
				curr_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ib = 0;
			} else {
				if (camnoc_unchanged &&
					(curr_tree_node->bw_info[ddr_drv_idx].hlos_vote.ab ==
					con_axi_vote->axi_path[i].mnoc_ab_bw) &&
					(curr_tree_node->bw_info[ddr_drv_idx].hlos_vote.ib ==
					con_axi_vote->axi_path[i].mnoc_ib_bw))
					continue;

				curr_tree_node->bw_info[ddr_drv_idx].hlos_vote.ab =
					con_axi_vote->axi_path[i].mnoc_ab_bw;
				curr_tree_node->bw_info[ddr_drv_idx].hlos_vote.ib =
					con_axi_vote->axi_path[i].mnoc_ib_bw;
			}
		}

		cam_cpas_dump_tree_vote_info(cpas_hw, curr_tree_node, "Level0 after update",
			ddr_drv_idx, cesta_drv_idx);

		while (curr_tree_node->parent_node) {
			par_tree_node = curr_tree_node->parent_node;
			memcpy(&par_camnoc_old, &par_tree_node->bw_info[cesta_drv_idx],
				sizeof(struct cam_cpas_axi_bw_info));
			memcpy(&par_mnoc_old, &par_tree_node->bw_info[ddr_drv_idx],
				sizeof(struct cam_cpas_axi_bw_info));
			cam_cpas_dump_tree_vote_info(cpas_hw, par_tree_node, "Parent before update",
				ddr_drv_idx, cesta_drv_idx);

			if (par_tree_node->merge_type == CAM_CPAS_TRAFFIC_MERGE_SUM) {
				merge_type_factor = 1;
			} else if (par_tree_node->merge_type ==
				CAM_CPAS_TRAFFIC_MERGE_SUM_INTERLEAVE) {
				merge_type_factor = 2;
			} else {
				CAM_ERR(CAM_CPAS, "Invalid Merge type");
				rc = -EINVAL;
				goto unlock_tree;
			}

			/*
			 * Remove contribution of current node old camnoc bw from parent,
			 * then add new camnoc bw of current level to the parent
			 */
			if (cesta_drv_idx > CAM_CPAS_PORT_HLOS_DRV) {
				par_tree_node->bw_info[cesta_drv_idx].drv_vote.high.camnoc -=
					(curr_camnoc_old.drv_vote.high.camnoc/merge_type_factor);
				par_tree_node->bw_info[cesta_drv_idx].drv_vote.low.camnoc -=
					(curr_camnoc_old.drv_vote.low.camnoc/merge_type_factor);

				par_tree_node->bw_info[cesta_drv_idx].drv_vote.high.camnoc +=
				(curr_tree_node->bw_info[cesta_drv_idx].drv_vote.high.camnoc/
					merge_type_factor);
				par_tree_node->bw_info[cesta_drv_idx].drv_vote.low.camnoc +=
				(curr_tree_node->bw_info[cesta_drv_idx].drv_vote.low.camnoc/
					merge_type_factor);
			} else {
				par_tree_node->bw_info[cesta_drv_idx].hlos_vote.camnoc -=
					(curr_camnoc_old.hlos_vote.camnoc/merge_type_factor);

				par_tree_node->bw_info[cesta_drv_idx].hlos_vote.camnoc +=
					(curr_tree_node->bw_info[cesta_drv_idx].hlos_vote.camnoc/
					merge_type_factor);
			}

			/*
			 * Remove contribution of current node old mnoc bw from parent,
			 * then add new mnoc bw of current level to the parent
			 */
			if (ddr_drv_idx > CAM_CPAS_PORT_HLOS_DRV) {
				par_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ab -=
					curr_mnoc_old.drv_vote.high.ab;
				par_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ib -=
					curr_mnoc_old.drv_vote.high.ib;
				par_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ab -=
					curr_mnoc_old.drv_vote.low.ab;
				par_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ib -=
					curr_mnoc_old.drv_vote.low.ib;

				par_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ab +=
					curr_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ab;
				par_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ib +=
					curr_tree_node->bw_info[ddr_drv_idx].drv_vote.high.ib;
				par_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ab +=
					curr_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ab;
				par_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ib +=
					curr_tree_node->bw_info[ddr_drv_idx].drv_vote.low.ib;
			} else {
				par_tree_node->bw_info[ddr_drv_idx].hlos_vote.ab -=
					curr_mnoc_old.hlos_vote.ab;
				par_tree_node->bw_info[ddr_drv_idx].hlos_vote.ib -=
					curr_mnoc_old.hlos_vote.ib;

				par_tree_node->bw_info[ddr_drv_idx].hlos_vote.ab +=
					curr_tree_node->bw_info[ddr_drv_idx].hlos_vote.ab;
				par_tree_node->bw_info[ddr_drv_idx].hlos_vote.ib +=
					curr_tree_node->bw_info[ddr_drv_idx].hlos_vote.ib;
			}

			cam_cpas_dump_tree_vote_info(cpas_hw, par_tree_node, "Parent after update",
				ddr_drv_idx, cesta_drv_idx);

			if (!par_tree_node->parent_node) {
				rc = cam_cpas_update_axi_vote_bw(cpas_hw, par_tree_node,
					ddr_drv_idx, cesta_drv_idx, mnoc_axi_port_updated,
					camnoc_axi_port_updated);
				if (rc) {
					CAM_ERR(CAM_CPAS, "Update Vote failed");
					goto unlock_tree;
				}
			}

			curr_tree_node = par_tree_node;
			memcpy(&curr_camnoc_old, &par_camnoc_old,
				sizeof(struct cam_cpas_axi_bw_info));
			memcpy(&curr_mnoc_old, &par_mnoc_old, sizeof(struct cam_cpas_axi_bw_info));
		}
	}

	cam_cpas_dump_full_tree_state(cpas_hw, "AfterClientVoteUpdate");

	if (!par_tree_node) {
		CAM_DBG(CAM_CPAS, "No change in BW for all paths");
		rc = 0;
		goto unlock_tree;
	}

	if (soc_private->enable_smart_qos) {
		CAM_DBG(CAM_PERF, "Start QoS update for client[%s][%d]",
			cpas_client->data.identifier, cpas_client->data.cell_index);
		for (i = 0; i < cpas_core->num_axi_ports; i++) {
			if (mnoc_axi_port_updated[i] && cpas_core->axi_port[i].is_rt) {
				rt_bw_updated = true;
				break;
			}
		}

		if (rt_bw_updated) {
			apply_smart_qos = cam_cpas_calculate_smart_qos(cpas_hw);

			if (apply_smart_qos && cam_cpas_is_new_rt_bw_lower(cpas_hw)) {
				/*
				 * If new BW is low, apply QoS first and then vote,
				 * otherwise vote first and then apply QoS
				 */
				CAM_DBG(CAM_PERF, "Apply Smart QoS first");
				rc = cam_cpas_apply_smart_qos(cpas_hw);
				if (rc) {
					CAM_ERR(CAM_CPAS,
						"Failed in Smart QoS rc=%d", rc);
					goto unlock_tree;
				}

				apply_smart_qos = false;
			}
		}
	}

vote_start_clients:
	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		if (mnoc_axi_port_updated[i])
			mnoc_axi_port = &cpas_core->axi_port[i];
		else
			continue;

		memcpy(&curr_port_bw, &mnoc_axi_port->curr_bw, sizeof(struct cam_cpas_axi_bw_info));

		if (mnoc_axi_port->bus_client.common_data.is_drv_port) {
			CAM_DBG(CAM_PERF,
				"Port[%s] :DRV high [%lld %lld] low [%lld %lld] streamon_clients=%d",
				mnoc_axi_port->axi_port_name,
				mnoc_axi_port->curr_bw.drv_vote.high.ab,
				mnoc_axi_port->curr_bw.drv_vote.high.ib,
				mnoc_axi_port->curr_bw.drv_vote.low.ab,
				mnoc_axi_port->curr_bw.drv_vote.low.ib,
				cpas_core->streamon_clients);

			if (!mnoc_axi_port->ib_bw_voting_needed) {
				curr_port_bw.drv_vote.high.ib = 0;
				curr_port_bw.drv_vote.low.ib = 0;
			}

			/* Vote bw on appropriate bus id */
			rc = cam_cpas_util_vote_drv_bus_client_bw(&mnoc_axi_port->bus_client,
				&curr_port_bw, &applied_port_bw);
			if (rc) {
				CAM_ERR(CAM_CPAS, "Failed in mnoc vote for %s rc=%d",
					mnoc_axi_port->axi_port_name, rc);
				goto unlock_tree;
			}

			/* Do start/stop/channel switch based on apply type */
			if ((apply_type == CAM_CPAS_APPLY_TYPE_START) &&
				!mnoc_axi_port->is_drv_started) {
				rc = cam_cpas_start_drv_for_dev(mnoc_axi_port->cam_rsc_dev);
				if (rc) {
					CAM_ERR(CAM_CPAS, "Port[%s] failed in DRV start rc:%d",
						mnoc_axi_port->axi_port_name, rc);
					goto unlock_tree;
				}

				if (debug_drv)
					CAM_INFO(CAM_CPAS, "Started rsc dev %s mnoc port:%s",
						dev_name(mnoc_axi_port->cam_rsc_dev),
						mnoc_axi_port->axi_port_name);

				CAM_DBG(CAM_CPAS, "Started rsc dev %s mnoc port:%s",
					dev_name(mnoc_axi_port->cam_rsc_dev),
					mnoc_axi_port->axi_port_name);
				mnoc_axi_port->is_drv_started = true;
			} else if ((apply_type == CAM_CPAS_APPLY_TYPE_STOP) &&
				mnoc_axi_port->is_drv_started &&
				(applied_port_bw.drv_vote.high.ab == 0) &&
				(applied_port_bw.drv_vote.high.ib == 0) &&
				(applied_port_bw.drv_vote.low.ab == 0) &&
				(applied_port_bw.drv_vote.low.ib == 0)) {
				rc = cam_cpas_stop_drv_for_dev(mnoc_axi_port->cam_rsc_dev);
				if (rc) {
					CAM_ERR(CAM_CPAS, "Port[%s] failed in DRV stop rc:%d",
						mnoc_axi_port->axi_port_name, rc);
					goto unlock_tree;
				}

				if (debug_drv)
					CAM_INFO(CAM_CPAS, "Stopped rsc dev %s mnoc port:%s",
						dev_name(mnoc_axi_port->cam_rsc_dev),
						mnoc_axi_port->axi_port_name);

				CAM_DBG(CAM_CPAS, "Stopped rsc dev %s mnoc port:%s",
					dev_name(mnoc_axi_port->cam_rsc_dev),
					mnoc_axi_port->axi_port_name);
				mnoc_axi_port->is_drv_started = false;
			} else {
				if (mnoc_axi_port->is_drv_started) {
					rc = cam_cpas_drv_channel_switch_for_dev(
						mnoc_axi_port->cam_rsc_dev);
					if (rc) {
						CAM_ERR(CAM_CPAS,
							"Port[%s] failed in channel switch rc:%d",
							mnoc_axi_port->axi_port_name, rc);
						goto unlock_tree;
					}

					if (debug_drv)
						CAM_INFO(CAM_CPAS,
							"Channel switch for rsc dev %s mnoc port:%s",
							dev_name(mnoc_axi_port->cam_rsc_dev),
							mnoc_axi_port->axi_port_name);

					CAM_DBG(CAM_CPAS,
						"Channel switch for rsc dev %s mnoc port:%s",
						dev_name(mnoc_axi_port->cam_rsc_dev),
						mnoc_axi_port->axi_port_name);
				}
			}

		} else {
			CAM_DBG(CAM_PERF,
				"Port[%s] :HLOS ab=%lld ib=%lld additional=%lld, streamon_clients=%d",
				mnoc_axi_port->axi_port_name, mnoc_axi_port->curr_bw.hlos_vote.ab,
				mnoc_axi_port->curr_bw.hlos_vote.ib, mnoc_axi_port->additional_bw,
				cpas_core->streamon_clients);

			if (!mnoc_axi_port->curr_bw.hlos_vote.ab) {
				if (mnoc_axi_port->additional_bw)
					curr_port_bw.hlos_vote.ab = mnoc_axi_port->additional_bw;
				else if (cpas_core->streamon_clients)
					curr_port_bw.hlos_vote.ab = CAM_CPAS_DEFAULT_AXI_BW;
				else
					curr_port_bw.hlos_vote.ab = 0;
			}

			if (!mnoc_axi_port->ib_bw_voting_needed)
				curr_port_bw.hlos_vote.ib = 0;

			rc = cam_cpas_util_vote_hlos_bus_client_bw(&mnoc_axi_port->bus_client,
				curr_port_bw.hlos_vote.ab, curr_port_bw.hlos_vote.ib, false,
				&applied_port_bw.hlos_vote.ab, &applied_port_bw.hlos_vote.ib);
			if (rc) {
				CAM_ERR(CAM_CPAS, "Failed in mnoc vote for %s rc=%d",
					mnoc_axi_port->axi_port_name, rc);
				goto unlock_tree;
			}
		}

		memcpy(&mnoc_axi_port->applied_bw, &applied_port_bw,
			sizeof(struct cam_cpas_axi_bw_info));
	}

	if (soc_private->control_camnoc_axi_clk) {
		rc = cam_cpas_util_set_camnoc_axi_clk_rate(cpas_hw, cesta_drv_idx);
		if (rc) {
			CAM_ERR(CAM_CPAS, "Failed in setting axi clk rate rc=%d", rc);
			goto unlock_tree;
		}
	} else {
		rc = cam_cpas_camnoc_set_bw_vote(cpas_hw, camnoc_axi_port_updated);
		if (rc) {
			CAM_ERR(CAM_CPAS, "Failed in setting camnoc bw vote rc=%d", rc);
			goto unlock_tree;
		}
	}

	if (soc_private->enable_smart_qos && apply_smart_qos) {
		CAM_DBG(CAM_PERF, "Apply Smart QoS after bw votes");

		rc = cam_cpas_apply_smart_qos(cpas_hw);
		if (rc) {
			CAM_ERR(CAM_CPAS, "Failed in Smart QoS rc=%d", rc);
			goto unlock_tree;
		}
	}

unlock_tree:
	mutex_unlock(&cpas_core->tree_lock);
	return rc;
}

static int cam_cpas_util_apply_default_axi_vote(
	struct cam_hw_info *cpas_hw, bool enable)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_axi_port *axi_port = NULL;
	uint64_t mnoc_ab_bw = 0, mnoc_ib_bw = 0;
	int rc = 0, i = 0;

	mutex_lock(&cpas_core->tree_lock);
	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		if ((!cpas_core->axi_port[i].bus_client.common_data.is_drv_port) &&
			(!cpas_core->axi_port[i].curr_bw.hlos_vote.ab ||
			!cpas_core->axi_port[i].curr_bw.hlos_vote.ib))
			axi_port = &cpas_core->axi_port[i];
		else
			continue;

		if (enable)
			mnoc_ib_bw = CAM_CPAS_DEFAULT_AXI_BW;
		else
			mnoc_ib_bw = 0;

		CAM_DBG(CAM_CPAS, "Port=[%s] :ab[%llu] ib[%llu]",
			axi_port->axi_port_name, mnoc_ab_bw, mnoc_ib_bw);

		rc = cam_cpas_util_vote_hlos_bus_client_bw(&axi_port->bus_client,
			mnoc_ab_bw, mnoc_ib_bw, false, &axi_port->applied_bw.hlos_vote.ab,
			&axi_port->applied_bw.hlos_vote.ib);
		if (rc) {
			CAM_ERR(CAM_CPAS,
				"Failed in mnoc vote ab[%llu] ib[%llu] rc=%d",
				mnoc_ab_bw, mnoc_ib_bw, rc);
			goto unlock_tree;
		}
	}

unlock_tree:
	mutex_unlock(&cpas_core->tree_lock);
	return rc;
}

static int cam_cpas_hw_update_axi_vote(struct cam_hw_info *cpas_hw,
	uint32_t client_handle, struct cam_axi_vote *client_axi_vote)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_client *cpas_client = NULL;
	struct cam_axi_vote *axi_vote = NULL;
	uint32_t client_indx = CAM_CPAS_GET_CLIENT_IDX(client_handle);
	int rc = 0;

	if (!client_axi_vote) {
		CAM_ERR(CAM_CPAS, "Invalid arg, client_handle=%d",
			client_handle);
		return -EINVAL;
	}

	if (!CAM_CPAS_CLIENT_VALID(client_indx))
		return -EINVAL;

	mutex_lock(&cpas_hw->hw_mutex);
	mutex_lock(&cpas_core->client_mutex[client_indx]);

	axi_vote = kmemdup(client_axi_vote, sizeof(struct cam_axi_vote),
		GFP_KERNEL);
	if (!axi_vote) {
		CAM_ERR(CAM_CPAS, "Out of memory");
		mutex_unlock(&cpas_core->client_mutex[client_indx]);
		mutex_unlock(&cpas_hw->hw_mutex);
		return -ENOMEM;
	}

	cam_cpas_dump_axi_vote_info(cpas_core->cpas_client[client_indx],
		"Incoming Vote", axi_vote);

	cpas_client = cpas_core->cpas_client[client_indx];

	if (!CAM_CPAS_CLIENT_STARTED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS, "client=[%d][%s][%d] has not started",
			client_indx, cpas_client->data.identifier,
			cpas_client->data.cell_index);
		rc = -EPERM;
		goto unlock_client;
	}

	rc = cam_cpas_util_translate_client_paths(axi_vote);
	if (rc) {
		CAM_ERR(CAM_CPAS,
			"Unable to translate per path votes rc: %d", rc);
		goto unlock_client;
	}

	cam_cpas_dump_axi_vote_info(cpas_core->cpas_client[client_indx],
		"Translated Vote", axi_vote);

	rc = cam_cpas_util_apply_client_axi_vote(cpas_hw,
		cpas_core->cpas_client[client_indx], axi_vote, CAM_CPAS_APPLY_TYPE_UPDATE);

	/* Log an entry whenever there is an AXI update - after updating */
	cam_cpas_update_monitor_array(cpas_hw, "CPAS AXI post-update",
		client_indx);
unlock_client:
	cam_free_clear((void *)axi_vote);
	axi_vote = NULL;
	mutex_unlock(&cpas_core->client_mutex[client_indx]);
	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;
}

static int cam_cpas_util_get_ahb_level(struct cam_hw_info *cpas_hw,
	struct device *dev, unsigned long freq, enum cam_vote_level *req_level)
{
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct dev_pm_opp *opp;
	unsigned int corner;
	enum cam_vote_level level = CAM_LOWSVS_D1_VOTE;
	unsigned long corner_freq = freq;
	int i;

	if (!dev || !req_level) {
		CAM_ERR(CAM_CPAS, "Invalid params %pK, %pK", dev, req_level);
		return -EINVAL;
	}

	opp = dev_pm_opp_find_freq_ceil(dev, &corner_freq);
	if (IS_ERR(opp)) {
		CAM_DBG(CAM_CPAS, "OPP Ceil not available for freq :%ld, %pK",
			corner_freq, opp);
		*req_level = CAM_TURBO_VOTE;
		return 0;
	}

	corner = dev_pm_opp_get_voltage(opp);

	for (i = 0; i < soc_private->num_vdd_ahb_mapping; i++)
		if (corner == soc_private->vdd_ahb[i].vdd_corner)
			level = soc_private->vdd_ahb[i].ahb_level;

	CAM_DBG(CAM_CPAS,
		"From OPP table : freq=[%ld][%ld], corner=%d, level=%d",
		freq, corner_freq, corner, level);

	*req_level = level;

	return 0;
}

static int cam_cpas_util_apply_client_ahb_vote(struct cam_hw_info *cpas_hw,
	struct cam_cpas_client *cpas_client, struct cam_ahb_vote *ahb_vote,
	enum cam_vote_level *applied_level)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_bus_client *ahb_bus_client = &cpas_core->ahb_bus_client;
	enum cam_vote_level required_level;
	enum cam_vote_level highest_level;
	int i, rc = 0;

	if (!ahb_bus_client->valid) {
		CAM_ERR(CAM_CPAS, "AHB Bus client not valid");
		return -EINVAL;
	}

	if (ahb_vote->type == CAM_VOTE_DYNAMIC) {
		rc = cam_cpas_util_get_ahb_level(cpas_hw, cpas_client->data.dev,
			ahb_vote->vote.freq, &required_level);
		if (rc)
			return rc;
	} else {
		required_level = ahb_vote->vote.level;
	}

	if (cpas_client->ahb_level == required_level)
		return 0;

	mutex_lock(&ahb_bus_client->lock);
	cpas_client->ahb_level = required_level;

	CAM_DBG(CAM_CPAS, "Client[%s] required level[%d], curr_level[%d]",
		ahb_bus_client->common_data.name, required_level,
		ahb_bus_client->curr_vote_level);

	if (required_level == ahb_bus_client->curr_vote_level)
		goto unlock_bus_client;

	highest_level = required_level;
	for (i = 0; i < cpas_core->num_clients; i++) {
		if (cpas_core->cpas_client[i] && (highest_level <
			cpas_core->cpas_client[i]->ahb_level))
			highest_level = cpas_core->cpas_client[i]->ahb_level;
	}

	CAM_DBG(CAM_CPAS, "Required highest_level[%d]", highest_level);

	if (!cpas_core->ahb_bus_scaling_disable) {
		rc = cam_cpas_util_vote_bus_client_level(ahb_bus_client,
			highest_level);
		if (rc) {
			CAM_ERR(CAM_CPAS, "Failed in ahb vote, level=%d, rc=%d",
				highest_level, rc);
			goto unlock_bus_client;
		}
	}

	if (cpas_core->streamon_clients) {
		rc = cam_soc_util_set_clk_rate_level(&cpas_hw->soc_info, CAM_CLK_SW_CLIENT_IDX,
			highest_level, 0, true);
		if (rc) {
			CAM_ERR(CAM_CPAS,
				"Failed in scaling clock rate level %d for AHB",
				highest_level);
			goto unlock_bus_client;
		}
	}

	if (applied_level)
		*applied_level = highest_level;

unlock_bus_client:
	mutex_unlock(&ahb_bus_client->lock);
	return rc;
}

static int cam_cpas_hw_update_ahb_vote(struct cam_hw_info *cpas_hw,
	uint32_t client_handle, struct cam_ahb_vote *client_ahb_vote)
{
	struct cam_ahb_vote ahb_vote;
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_client *cpas_client = NULL;
	uint32_t client_indx = CAM_CPAS_GET_CLIENT_IDX(client_handle);
	int rc = 0;

	if (!client_ahb_vote) {
		CAM_ERR(CAM_CPAS, "Invalid input arg");
		return -EINVAL;
	}

	ahb_vote = *client_ahb_vote;

	if (ahb_vote.vote.level == 0) {
		CAM_DBG(CAM_CPAS, "0 ahb vote from client %d",
			client_handle);
		ahb_vote.type = CAM_VOTE_ABSOLUTE;
		ahb_vote.vote.level = CAM_LOWSVS_D1_VOTE;
	}

	if (!CAM_CPAS_CLIENT_VALID(client_indx))
		return -EINVAL;

	mutex_lock(&cpas_hw->hw_mutex);
	mutex_lock(&cpas_core->client_mutex[client_indx]);
	cpas_client = cpas_core->cpas_client[client_indx];

	if (!CAM_CPAS_CLIENT_STARTED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS, "client=[%d][%s][%d] has not started",
			client_indx, cpas_client->data.identifier,
			cpas_client->data.cell_index);
		rc = -EPERM;
		goto unlock_client;
	}

	CAM_DBG(CAM_PERF,
		"client=[%d][%s][%d] : type[%d], level[%d], freq[%ld], applied[%d]",
		client_indx, cpas_client->data.identifier,
		cpas_client->data.cell_index, ahb_vote.type,
		ahb_vote.vote.level, ahb_vote.vote.freq,
		cpas_core->cpas_client[client_indx]->ahb_level);

	rc = cam_cpas_util_apply_client_ahb_vote(cpas_hw,
		cpas_core->cpas_client[client_indx], &ahb_vote, NULL);

unlock_client:
	mutex_unlock(&cpas_core->client_mutex[client_indx]);
	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;
}

static int cam_cpas_util_create_vote_all_paths(
	struct cam_cpas_client *cpas_client,
	struct cam_axi_vote *axi_vote)
{
	int i, j;
	uint64_t camnoc_bw, mnoc_ab_bw, mnoc_ib_bw;
	struct cam_cpas_axi_per_path_bw_vote *axi_path;

	if (!cpas_client || !axi_vote)
		return -EINVAL;

	camnoc_bw = axi_vote->axi_path[0].camnoc_bw;
	mnoc_ab_bw = axi_vote->axi_path[0].mnoc_ab_bw;
	mnoc_ib_bw = axi_vote->axi_path[0].mnoc_ib_bw;

	axi_vote->num_paths = 0;

	for (i = 0; i < CAM_CPAS_TRANSACTION_MAX; i++) {
		for (j = 0; j < CAM_CPAS_PATH_DATA_MAX; j++) {
			if (cpas_client->tree_node[j][i]) {
				axi_path = &axi_vote->axi_path[axi_vote->num_paths];

				axi_path->path_data_type = j;
				axi_path->transac_type = i;
				axi_path->camnoc_bw = camnoc_bw;
				axi_path->mnoc_ab_bw = mnoc_ab_bw;
				axi_path->mnoc_ib_bw = mnoc_ib_bw;
				if (cpas_client->tree_node[j][i]->drv_voting_idx >
					CAM_CPAS_PORT_HLOS_DRV)
					axi_path->vote_level = CAM_CPAS_VOTE_LEVEL_LOW;

				axi_vote->num_paths++;
			}
		}
	}

	return 0;
}

static int cam_cpas_hw_start(void *hw_priv, void *start_args,
	uint32_t arg_size)
{
	struct cam_hw_info *cpas_hw;
	struct cam_cpas *cpas_core;
	uint32_t client_indx;
	struct cam_cpas_hw_cmd_start *cmd_hw_start;
	struct cam_cpas_client *cpas_client;
	struct cam_ahb_vote *ahb_vote;
	struct cam_ahb_vote remove_ahb;
	struct cam_axi_vote axi_vote = {0};
	enum cam_vote_level applied_level = CAM_LOWSVS_D1_VOTE;
	int rc, i = 0, err_val = 0;
	struct cam_cpas_private_soc *soc_private = NULL;
	bool invalid_start = true;
	int count;

	if (!hw_priv || !start_args) {
		CAM_ERR(CAM_CPAS, "Invalid arguments %pK %pK",
			hw_priv, start_args);
		return -EINVAL;
	}

	if (sizeof(struct cam_cpas_hw_cmd_start) != arg_size) {
		CAM_ERR(CAM_CPAS, "HW_CAPS size mismatch %zd %d",
			sizeof(struct cam_cpas_hw_cmd_start), arg_size);
		return -EINVAL;
	}

	cpas_hw = (struct cam_hw_info *)hw_priv;
	cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	soc_private = (struct cam_cpas_private_soc *)
		cpas_hw->soc_info.soc_private;
	cmd_hw_start = (struct cam_cpas_hw_cmd_start *)start_args;
	client_indx = CAM_CPAS_GET_CLIENT_IDX(cmd_hw_start->client_handle);
	ahb_vote = cmd_hw_start->ahb_vote;

	if (!ahb_vote || !cmd_hw_start->axi_vote)
		return -EINVAL;

	if (!ahb_vote->vote.level) {
		CAM_ERR(CAM_CPAS, "Invalid vote ahb[%d]",
			ahb_vote->vote.level);
		return -EINVAL;
	}

	memcpy(&axi_vote, cmd_hw_start->axi_vote, sizeof(struct cam_axi_vote));
	for (i = 0; i < axi_vote.num_paths; i++) {
		if ((axi_vote.axi_path[i].camnoc_bw != 0) ||
			(axi_vote.axi_path[i].mnoc_ab_bw != 0) ||
			(axi_vote.axi_path[i].mnoc_ib_bw != 0)) {
			invalid_start = false;
			break;
		}
	}

	if (invalid_start) {
		CAM_ERR(CAM_CPAS, "Zero start vote");
		return -EINVAL;
	}

	if (!CAM_CPAS_CLIENT_VALID(client_indx))
		return -EINVAL;

	mutex_lock(&cpas_hw->hw_mutex);
	mutex_lock(&cpas_core->client_mutex[client_indx]);
	cpas_client = cpas_core->cpas_client[client_indx];

	if (!CAM_CPAS_CLIENT_REGISTERED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS, "client=[%d] is not registered",
			client_indx);
		rc = -EPERM;
		goto error;
	}

	if (CAM_CPAS_CLIENT_STARTED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS, "client=[%d][%s][%d] is in start state",
			client_indx, cpas_client->data.identifier,
			cpas_client->data.cell_index);
		rc = -EPERM;
		goto error;
	}

	CAM_DBG(CAM_CPAS,
		"AHB :client=[%d][%s][%d] type[%d], level[%d], applied[%d]",
		client_indx, cpas_client->data.identifier,
		cpas_client->data.cell_index,
		ahb_vote->type, ahb_vote->vote.level, cpas_client->ahb_level);
	rc = cam_cpas_util_apply_client_ahb_vote(cpas_hw, cpas_client,
		ahb_vote, &applied_level);
	if (rc)
		goto error;

	cam_cpas_dump_axi_vote_info(cpas_client, "CPAS Start Vote",
		&axi_vote);

	/*
	 * If client has indicated start bw to be applied on all paths
	 * of client, apply that otherwise apply whatever the client supplies
	 * for specific paths
	 */
	if (axi_vote.axi_path[0].path_data_type ==
		CAM_CPAS_API_PATH_DATA_STD_START) {
		rc = cam_cpas_util_create_vote_all_paths(cpas_client,
			&axi_vote);
	} else {
		rc = cam_cpas_util_translate_client_paths(&axi_vote);
	}

	if (rc) {
		CAM_ERR(CAM_CPAS, "Unable to create or translate paths rc: %d",
			rc);
		goto remove_ahb_vote;
	}

	cam_cpas_dump_axi_vote_info(cpas_client, "CPAS Start Translated Vote", &axi_vote);

	if (cpas_core->streamon_clients == 0) {
		if (cpas_core->force_hlos_drv) {
			soc_private->enable_cam_ddr_drv = false;
			soc_private->enable_cam_clk_drv = false;
		}

		if (cpas_core->force_cesta_sw_client)
			soc_private->enable_cam_clk_drv = false;

		if (debug_drv)
			CAM_INFO(CAM_CPAS, "DRV enable[DDR CLK]:[%s %s]",
				CAM_BOOL_TO_YESNO(soc_private->enable_cam_ddr_drv),
				CAM_BOOL_TO_YESNO(soc_private->enable_cam_clk_drv));

		rc = cam_cpas_util_apply_default_axi_vote(cpas_hw, true);
		if (rc)
			goto remove_ahb_vote;

		atomic_set(&cpas_core->soc_access_count, 1);

		count = cam_soc_util_regulators_enabled(&cpas_hw->soc_info);
		if (count > 0)
			CAM_DBG(CAM_CPAS, "Regulators already enabled %d", count);

		rc = cam_cpas_soc_enable_resources(&cpas_hw->soc_info,
			applied_level);
		if (rc) {
			atomic_set(&cpas_core->soc_access_count, 0);
			CAM_ERR(CAM_CPAS, "enable_resorce failed, rc=%d", rc);
			goto remove_ahb_vote;
		}

		if (cpas_core->internal_ops.qchannel_handshake) {
			rc = cpas_core->internal_ops.qchannel_handshake(cpas_hw, true, false);
			if (rc) {
				CAM_WARN(CAM_CPAS, "failed in qchannel_handshake rc=%d", rc);
				/* Do not return error, passthrough */

				rc = cpas_core->internal_ops.qchannel_handshake(cpas_hw,
					true, true);
				if (rc) {
					CAM_ERR(CAM_CPAS,
						"failed in qchannel_handshake, hw blocks may not work rc=%d",
						rc);
					/* Do not return error, passthrough */
				}
			}
		}

		if (cpas_core->internal_ops.power_on) {
			rc = cpas_core->internal_ops.power_on(cpas_hw);
			if (rc) {
				atomic_set(&cpas_core->soc_access_count, 0);
				cam_cpas_soc_disable_resources(
					&cpas_hw->soc_info, true, true);
				CAM_ERR(CAM_CPAS,
					"failed in power_on settings rc=%d",
					rc);
				goto remove_ahb_vote;
			}
		}
		CAM_DBG(CAM_CPAS, "soc_access_count=%d\n",
			atomic_read(&cpas_core->soc_access_count));

		if (soc_private->enable_smart_qos)
			cam_cpas_reset_niu_priorities(cpas_hw);

		cam_smmu_reset_cb_page_fault_cnt();
		cpas_hw->hw_state = CAM_HW_STATE_POWER_UP;
	}

	/*
	 * Need to apply axi vote after we enable clocks, since we need certain clocks enabled for
	 * drv channel switch
	 */
	rc = cam_cpas_util_apply_client_axi_vote(cpas_hw, cpas_client, &axi_vote,
		CAM_CPAS_APPLY_TYPE_START);
	if (rc)
		goto remove_ahb_vote;

	cpas_client->started = true;
	cpas_core->streamon_clients++;

	if (debug_drv && (cpas_core->streamon_clients == 1)) {
		cam_cpas_log_vote(cpas_hw, false);
		cam_cpas_dump_full_tree_state(cpas_hw, "StartFirstClient");
	}

	CAM_DBG(CAM_CPAS, "client=[%d][%s][%d] streamon_clients=%d",
		client_indx, cpas_client->data.identifier,
		cpas_client->data.cell_index, cpas_core->streamon_clients);

	mutex_unlock(&cpas_core->client_mutex[client_indx]);
	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;

remove_ahb_vote:
	remove_ahb.type = CAM_VOTE_ABSOLUTE;
	remove_ahb.vote.level = CAM_SUSPEND_VOTE;
	err_val = cam_cpas_util_apply_client_ahb_vote(cpas_hw, cpas_client,
		&remove_ahb, NULL);
	if (err_val)
		CAM_ERR(CAM_CPAS, "Removing AHB vote failed, rc=%d", err_val);

error:
	mutex_unlock(&cpas_core->client_mutex[client_indx]);
	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;
}

static int _check_soc_access_count(struct cam_cpas *cpas_core)
{
	return (atomic_read(&cpas_core->soc_access_count) > 0) ? 0 : 1;
}

static int cam_cpas_util_validate_stop_bw(struct cam_cpas_private_soc *soc_private,
	struct cam_cpas *cpas_core)
{
	int i;

	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		if (soc_private->enable_cam_ddr_drv &&
			(cpas_core->axi_port[i].bus_client.common_data.is_drv_port)) {

			if ((cpas_core->axi_port[i].applied_bw.drv_vote.high.ab) ||
				(cpas_core->axi_port[i].applied_bw.drv_vote.high.ib) ||
				(cpas_core->axi_port[i].applied_bw.drv_vote.low.ab) ||
				(cpas_core->axi_port[i].applied_bw.drv_vote.low.ib)) {
				CAM_ERR(CAM_CPAS,
					"port:%s Non zero DRV applied BW high[%llu %llu] low[%llu %llu]",
					cpas_core->axi_port[i].axi_port_name,
					cpas_core->axi_port[i].applied_bw.drv_vote.high.ab,
					cpas_core->axi_port[i].applied_bw.drv_vote.high.ib,
					cpas_core->axi_port[i].applied_bw.drv_vote.low.ab,
					cpas_core->axi_port[i].applied_bw.drv_vote.low.ib);
				return -EINVAL;
			}
		} else {
			if (cpas_core->axi_port[i].bus_client.common_data.is_drv_port)
				continue;

			if ((cpas_core->axi_port[i].applied_bw.hlos_vote.ab) ||
				(cpas_core->axi_port[i].applied_bw.hlos_vote.ib)) {
				CAM_ERR(CAM_CPAS,
					"port:%s Non zero HLOS applied BW [%llu %llu]",
					cpas_core->axi_port[i].axi_port_name,
					cpas_core->axi_port[i].applied_bw.hlos_vote.ab,
					cpas_core->axi_port[i].applied_bw.hlos_vote.ib);
				return -EINVAL;
			}
		}
	}

	return 0;
}

static int cam_cpas_hw_stop(void *hw_priv, void *stop_args,
	uint32_t arg_size)
{
	struct cam_hw_info *cpas_hw;
	struct cam_cpas *cpas_core;
	uint32_t client_indx;
	struct cam_cpas_hw_cmd_stop *cmd_hw_stop;
	struct cam_cpas_client *cpas_client;
	struct cam_ahb_vote ahb_vote;
	struct cam_axi_vote axi_vote = {0};
	struct cam_cpas_private_soc *soc_private = NULL;
	int rc = 0, count;
	long result;
	int retry_camnoc_idle = 0;

	if (!hw_priv || !stop_args) {
		CAM_ERR(CAM_CPAS, "Invalid arguments %pK %pK",
			hw_priv, stop_args);
		return -EINVAL;
	}

	if (sizeof(struct cam_cpas_hw_cmd_stop) != arg_size) {
		CAM_ERR(CAM_CPAS, "HW_CAPS size mismatch %zd %d",
			sizeof(struct cam_cpas_hw_cmd_stop), arg_size);
		return -EINVAL;
	}

	cpas_hw = (struct cam_hw_info *)hw_priv;
	cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	soc_private = (struct cam_cpas_private_soc *)
		cpas_hw->soc_info.soc_private;
	cmd_hw_stop = (struct cam_cpas_hw_cmd_stop *)stop_args;
	client_indx = CAM_CPAS_GET_CLIENT_IDX(cmd_hw_stop->client_handle);

	if (!CAM_CPAS_CLIENT_VALID(client_indx))
		return -EINVAL;

	mutex_lock(&cpas_hw->hw_mutex);
	mutex_lock(&cpas_core->client_mutex[client_indx]);
	cpas_client = cpas_core->cpas_client[client_indx];

	CAM_DBG(CAM_CPAS, "Client=[%d][%s][%d] streamon_clients=%d",
		client_indx, cpas_client->data.identifier,
		cpas_client->data.cell_index, cpas_core->streamon_clients);

	if (!CAM_CPAS_CLIENT_STARTED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS, "Client=[%d][%s][%d] is not started",
			client_indx, cpas_client->data.identifier,
			cpas_client->data.cell_index);
		rc = -EPERM;
		goto done;
	}

	rc = cam_cpas_util_create_vote_all_paths(cpas_client, &axi_vote);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Unable to create per path votes rc: %d", rc);
		goto done;
	}

	cam_cpas_dump_axi_vote_info(cpas_client, "CPAS Stop Vote", &axi_vote);

	rc = cam_cpas_util_apply_client_axi_vote(cpas_hw, cpas_client, &axi_vote,
		CAM_CPAS_APPLY_TYPE_STOP);
	if (rc)
		goto done;

	cpas_client->started = false;

	if (debug_drv && (cpas_core->streamon_clients == 1)) {
		cam_cpas_log_vote(cpas_hw, false);
		cam_cpas_dump_full_tree_state(cpas_hw, "StopLastClient");
	}

	cpas_core->streamon_clients--;

	if (cpas_core->streamon_clients == 0) {
		if (cpas_core->internal_ops.power_off) {
			rc = cpas_core->internal_ops.power_off(cpas_hw);
			if (rc) {
				CAM_ERR(CAM_CPAS,
					"failed in power_off settings rc=%d",
					rc);
				/* Do not return error, passthrough */
			}
		}

		if (cpas_core->internal_ops.qchannel_handshake) {
			rc = cpas_core->internal_ops.qchannel_handshake(cpas_hw, false, false);
			if (rc) {
				CAM_ERR(CAM_CPAS, "failed in qchannel_handshake rc=%d", rc);
				retry_camnoc_idle = 1;
				/* Do not return error, passthrough */
			}
		}

		rc = cam_cpas_soc_disable_irq(&cpas_hw->soc_info);
		if (rc) {
			CAM_ERR(CAM_CPAS, "disable_irq failed, rc=%d", rc);
			goto done;
		}

		/* Wait for any IRQs still being handled */
		atomic_dec(&cpas_core->soc_access_count);
		result = wait_event_timeout(cpas_core->soc_access_count_wq,
			_check_soc_access_count(cpas_core), HZ);
		if (result == 0) {
			CAM_ERR(CAM_CPAS, "Wait failed: soc_access_count=%d",
				atomic_read(&cpas_core->soc_access_count));
		}

		/* try again incase camnoc is still not idle */
		if (cpas_core->internal_ops.qchannel_handshake &&
			retry_camnoc_idle) {
			rc = cpas_core->internal_ops.qchannel_handshake(cpas_hw, false, false);
			if (rc) {
				CAM_ERR(CAM_CPAS, "failed in qchannel_handshake rc=%d", rc);
				/* Do not return error, passthrough */
			}
		}

		rc = cam_cpas_soc_disable_resources(&cpas_hw->soc_info,
			true, false);
		if (rc) {
			CAM_ERR(CAM_CPAS, "disable_resorce failed, rc=%d", rc);
			goto done;
		}
		CAM_DBG(CAM_CPAS, "Disabled all the resources: soc_access_count=%d",
			atomic_read(&cpas_core->soc_access_count));

		count = cam_soc_util_regulators_enabled(&cpas_hw->soc_info);
		if (count > 0)
			CAM_WARN(CAM_CPAS,
				"Client=[%d][%s][%d] qchannel shut down while top gdsc is still on %d",
				client_indx, cpas_client->data.identifier,
				cpas_client->data.cell_index, count);

		rc = cam_cpas_util_apply_default_axi_vote(cpas_hw, false);
		if (rc)
			CAM_ERR(CAM_CPAS, "Failed in power off default vote rc: %d", rc);

		rc = cam_cpas_util_validate_stop_bw(soc_private, cpas_core);
		if (rc)
			CAM_ERR(CAM_CPAS, "Invalid applied bw at stop rc: %d", rc);

		cpas_hw->hw_state = CAM_HW_STATE_POWER_DOWN;
	}

	ahb_vote.type = CAM_VOTE_ABSOLUTE;
	ahb_vote.vote.level = CAM_SUSPEND_VOTE;
	rc = cam_cpas_util_apply_client_ahb_vote(cpas_hw, cpas_client,
		&ahb_vote, NULL);
	if (rc)
		goto done;

done:
	mutex_unlock(&cpas_core->client_mutex[client_indx]);
	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;
}

static int cam_cpas_hw_init(void *hw_priv, void *init_hw_args,
	uint32_t arg_size)
{
	struct cam_hw_info *cpas_hw;
	struct cam_cpas *cpas_core;
	int rc = 0;

	if (!hw_priv || !init_hw_args) {
		CAM_ERR(CAM_CPAS, "Invalid arguments %pK %pK",
			hw_priv, init_hw_args);
		return -EINVAL;
	}

	if (sizeof(struct cam_cpas_hw_caps) != arg_size) {
		CAM_ERR(CAM_CPAS, "INIT HW size mismatch %zd %d",
			sizeof(struct cam_cpas_hw_caps), arg_size);
		return -EINVAL;
	}

	cpas_hw = (struct cam_hw_info *)hw_priv;
	cpas_core = (struct cam_cpas *)cpas_hw->core_info;

	if (cpas_core->internal_ops.init_hw_version) {
		rc = cpas_core->internal_ops.init_hw_version(cpas_hw,
			(struct cam_cpas_hw_caps *)init_hw_args);
	}

	return rc;
}

static int cam_cpas_hw_register_client(struct cam_hw_info *cpas_hw,
	struct cam_cpas_register_params *register_params)
{
	int rc;
	char client_name[CAM_HW_IDENTIFIER_LENGTH + 3];
	int32_t client_indx = -1;
	struct cam_cpas *cpas_core = (struct cam_cpas *)cpas_hw->core_info;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;

	if ((!register_params) ||
		(strlen(register_params->identifier) < 1)) {
		CAM_ERR(CAM_CPAS, "Invalid cpas client identifier");
		return -EINVAL;
	}

	CAM_DBG(CAM_CPAS, "Register params : identifier=%s, cell_index=%d",
		register_params->identifier, register_params->cell_index);

	if (soc_private->client_id_based)
		snprintf(client_name, sizeof(client_name), "%s%d",
			register_params->identifier,
			register_params->cell_index);
	else
		snprintf(client_name, sizeof(client_name), "%s",
			register_params->identifier);

	mutex_lock(&cpas_hw->hw_mutex);

	rc = cam_common_util_get_string_index(soc_private->client_name,
		soc_private->num_clients, client_name, &client_indx);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Client %s is not found in CPAS client list rc=%d",
			client_name, rc);
		mutex_unlock(&cpas_hw->hw_mutex);
		return -ENODEV;
	}

	mutex_lock(&cpas_core->client_mutex[client_indx]);

	if (rc || !CAM_CPAS_CLIENT_VALID(client_indx) ||
		CAM_CPAS_CLIENT_REGISTERED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS,
			"Inval client %s %d : %d %d %pK %d",
			register_params->identifier,
			register_params->cell_index,
			CAM_CPAS_CLIENT_VALID(client_indx),
			CAM_CPAS_CLIENT_REGISTERED(cpas_core, client_indx),
			cpas_core->cpas_client[client_indx], rc);
		mutex_unlock(&cpas_core->client_mutex[client_indx]);
		mutex_unlock(&cpas_hw->hw_mutex);
		return -EPERM;
	}

	register_params->client_handle =
		CAM_CPAS_GET_CLIENT_HANDLE(client_indx);
	memcpy(&cpas_core->cpas_client[client_indx]->data, register_params,
		sizeof(struct cam_cpas_register_params));
	cpas_core->registered_clients++;
	cpas_core->cpas_client[client_indx]->registered = true;

	CAM_DBG(CAM_CPAS, "client=[%d][%s][%d], registered_clients=%d",
		client_indx,
		cpas_core->cpas_client[client_indx]->data.identifier,
		cpas_core->cpas_client[client_indx]->data.cell_index,
		cpas_core->registered_clients);

	mutex_unlock(&cpas_core->client_mutex[client_indx]);
	mutex_unlock(&cpas_hw->hw_mutex);

	return 0;
}

static int cam_cpas_hw_unregister_client(struct cam_hw_info *cpas_hw,
	uint32_t client_handle)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	uint32_t client_indx = CAM_CPAS_GET_CLIENT_IDX(client_handle);
	int rc = 0;

	if (!CAM_CPAS_CLIENT_VALID(client_indx))
		return -EINVAL;

	mutex_lock(&cpas_hw->hw_mutex);
	mutex_lock(&cpas_core->client_mutex[client_indx]);

	if (!CAM_CPAS_CLIENT_REGISTERED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS, "Client=[%d][%s][%d] not registered",
			client_indx,
			cpas_core->cpas_client[client_indx]->data.identifier,
			cpas_core->cpas_client[client_indx]->data.cell_index);
		rc = -EPERM;
		goto done;
	}

	if (CAM_CPAS_CLIENT_STARTED(cpas_core, client_indx)) {
		CAM_ERR(CAM_CPAS, "Client=[%d][%s][%d] is not stopped",
			client_indx,
			cpas_core->cpas_client[client_indx]->data.identifier,
			cpas_core->cpas_client[client_indx]->data.cell_index);

		rc = -EPERM;
		goto done;
	}

	CAM_DBG(CAM_CPAS, "client=[%d][%s][%d], registered_clients=%d",
		client_indx,
		cpas_core->cpas_client[client_indx]->data.identifier,
		cpas_core->cpas_client[client_indx]->data.cell_index,
		cpas_core->registered_clients);

	cpas_core->cpas_client[client_indx]->registered = false;
	cpas_core->registered_clients--;
done:
	mutex_unlock(&cpas_core->client_mutex[client_indx]);
	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;
}

static int cam_cpas_hw_get_hw_info(void *hw_priv,
	void *get_hw_cap_args, uint32_t arg_size)
{
	struct cam_hw_info *cpas_hw;
	struct cam_cpas *cpas_core;
	struct cam_cpas_hw_caps *hw_caps;
	struct cam_cpas_private_soc *soc_private;

	if (!hw_priv || !get_hw_cap_args) {
		CAM_ERR(CAM_CPAS, "Invalid arguments %pK %pK",
			hw_priv, get_hw_cap_args);
		return -EINVAL;
	}

	if (sizeof(struct cam_cpas_hw_caps) != arg_size) {
		CAM_ERR(CAM_CPAS, "HW_CAPS size mismatch %zd %d",
			sizeof(struct cam_cpas_hw_caps), arg_size);
		return -EINVAL;
	}

	cpas_hw = (struct cam_hw_info *)hw_priv;
	cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	hw_caps = (struct cam_cpas_hw_caps *)get_hw_cap_args;
	*hw_caps = cpas_core->hw_caps;

	/*Extract Fuse Info*/
	soc_private = (struct cam_cpas_private_soc *)
		cpas_hw->soc_info.soc_private;

	hw_caps->fuse_info = soc_private->fuse_info;
	CAM_DBG(CAM_CPAS, "fuse info->num_fuses %d", hw_caps->fuse_info.num_fuses);

	return 0;
}

static int cam_cpas_log_vote(struct cam_hw_info *cpas_hw, bool ddr_only)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	uint32_t i, vcd_idx;
	struct cam_hw_soc_info *soc_info = &cpas_hw->soc_info;
	struct cam_cpas_cesta_info *cesta_info =
		(struct cam_cpas_cesta_info *)cpas_core->cesta_info;

	if ((cpas_core->streamon_clients > 0) && soc_private->enable_smart_qos && !ddr_only)
		cam_cpas_print_smart_qos_priority(cpas_hw);


	/*
	 * First print rpmh registers as early as possible to catch nearest
	 * state of rpmh after an issue (overflow) occurs.
	 */
	if ((cpas_core->streamon_clients > 0) &&
		(cpas_core->regbase_index[CAM_CPAS_REG_RPMH] != -1)) {
		int reg_base_index =
			cpas_core->regbase_index[CAM_CPAS_REG_RPMH];
		void __iomem *rpmh_base =
			soc_info->reg_map[reg_base_index].mem_base;
		uint32_t offset_fe, offset_be;
		uint32_t fe_val, be_val;
		uint32_t *rpmh_info = &soc_private->rpmh_info[0];
		uint32_t ddr_bcm_index =
			soc_private->rpmh_info[CAM_RPMH_BCM_DDR_INDEX];
		uint32_t mnoc_bcm_index =
			soc_private->rpmh_info[CAM_RPMH_BCM_MNOC_INDEX];

		/*
		 * print 12 registers from 0x4, 0x800 offsets -
		 * this will give ddr, mmnoc and other BCM info.
		 * i=0 for DDR, i=4 for mnoc, but double check for each chipset.
		 */
		for (i = 0; i < rpmh_info[CAM_RPMH_NUMBER_OF_BCMS]; i++) {
			if ((!cpas_core->full_state_dump) &&
				(i != ddr_bcm_index) &&
				(i != mnoc_bcm_index))
				continue;

			offset_fe = rpmh_info[CAM_RPMH_BCM_FE_OFFSET] +
				(i * 0x4);
			offset_be = rpmh_info[CAM_RPMH_BCM_BE_OFFSET] +
				(i * 0x4);

			fe_val = cam_io_r_mb(rpmh_base + offset_fe);
			be_val = cam_io_r_mb(rpmh_base + offset_be);

			CAM_INFO(CAM_CPAS,
				"i=%d, FE[offset=0x%x, value=0x%x] BE[offset=0x%x, value=0x%x]",
				i, offset_fe, fe_val, offset_be, be_val);
		}
	}

	if ((cpas_core->streamon_clients > 0) &&
		cpas_core->regbase_index[CAM_CPAS_REG_CESTA] != -1) {
		int reg_base_index =
			cpas_core->regbase_index[CAM_CPAS_REG_CESTA];
		void __iomem *cesta_base =
			soc_info->reg_map[reg_base_index].mem_base;
		uint32_t vcd_base_inc =
			cesta_info->cesta_reg_info->vcd_currol.vcd_base_inc;
		uint32_t num_vcds = cesta_info->num_vcds;
		uint32_t vcd_curr_lvl_base =
			cesta_info->cesta_reg_info->vcd_currol.reg_offset;
		uint32_t cesta_vcd_curr_perfol_offset, cesta_vcd_curr_perfol_val;

		if (!atomic_inc_not_zero(&cpas_core->soc_access_count))
			goto skip_vcd_dump;

		for (i = 0; i < num_vcds; i++) {
			vcd_idx = cesta_info->vcd_info[i].index;
			cesta_vcd_curr_perfol_offset = vcd_curr_lvl_base +
				(vcd_base_inc * vcd_idx);
			cesta_vcd_curr_perfol_val =
				cam_io_r_mb(cesta_base + cesta_vcd_curr_perfol_offset);

			CAM_INFO(CAM_CPAS,
				"i=%d, VCD[index=%d, type=%d, name=%s] [offset=0x%x, value=0x%x]",
				i, cesta_info->vcd_info[i].index,
				cesta_info->vcd_info[i].type,
				cesta_info->vcd_info[i].clk,
				cesta_vcd_curr_perfol_offset,
				cesta_vcd_curr_perfol_val);
		}

		atomic_dec(&cpas_core->soc_access_count);
		wake_up(&cpas_core->soc_access_count_wq);
	}

skip_vcd_dump:
	if (ddr_only)
		return 0;

	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		if (cpas_core->axi_port[i].bus_client.common_data.is_drv_port) {
			CAM_INFO(CAM_PERF,
				"[%s] DRV applied: high [%llu %llu] low[%llu %llu] new: high [%llu %llu] low [%llu %llu]",
				cpas_core->axi_port[i].axi_port_name,
				cpas_core->axi_port[i].applied_bw.drv_vote.high.ab,
				cpas_core->axi_port[i].applied_bw.drv_vote.high.ib,
				cpas_core->axi_port[i].applied_bw.drv_vote.low.ab,
				cpas_core->axi_port[i].applied_bw.drv_vote.low.ib,
				cpas_core->axi_port[i].curr_bw.drv_vote.high.ab,
				cpas_core->axi_port[i].curr_bw.drv_vote.high.ib,
				cpas_core->axi_port[i].curr_bw.drv_vote.low.ab,
				cpas_core->axi_port[i].curr_bw.drv_vote.low.ib);
		} else {
			CAM_INFO(CAM_PERF, "Port %s HLOS applied [%llu %llu] new [%llu %llu]",
				cpas_core->axi_port[i].axi_port_name,
				cpas_core->axi_port[i].applied_bw.hlos_vote.ab,
				cpas_core->axi_port[i].applied_bw.hlos_vote.ib,
				cpas_core->axi_port[i].curr_bw.hlos_vote.ab,
				cpas_core->axi_port[i].curr_bw.hlos_vote.ib);
		}
	}

	if (soc_private->control_camnoc_axi_clk) {
		CAM_INFO(CAM_CPAS, "applied camnoc axi clk sw_client[%lld]",
			cpas_core->applied_camnoc_axi_rate.sw_client);

		if (soc_private->enable_cam_clk_drv)
			CAM_INFO(CAM_CPAS,
				"applied camnoc axi clk hw_client[high low] cesta_idx0:[%lld %lld] cesta_idx1:[%lld %lld] cesta_idx2:[%lld %lld]",
				cpas_core->applied_camnoc_axi_rate.hw_client[0].high,
				cpas_core->applied_camnoc_axi_rate.hw_client[0].low,
				cpas_core->applied_camnoc_axi_rate.hw_client[1].high,
				cpas_core->applied_camnoc_axi_rate.hw_client[1].low,
				cpas_core->applied_camnoc_axi_rate.hw_client[2].high,
				cpas_core->applied_camnoc_axi_rate.hw_client[2].low);
	} else {
		for (i = 0; i < cpas_core->num_camnoc_axi_ports; i++) {
			CAM_INFO(CAM_CPAS,
				"[%s] ab_bw[%lld] ib_bw[%lld] additional_bw[%lld] applied_ab[%lld] applied_ib[%lld]",
				cpas_core->camnoc_axi_port[i].axi_port_name,
				cpas_core->camnoc_axi_port[i].curr_bw.hlos_vote.ab,
				cpas_core->camnoc_axi_port[i].curr_bw.hlos_vote.ib,
				cpas_core->camnoc_axi_port[i].additional_bw,
				cpas_core->camnoc_axi_port[i].applied_bw.hlos_vote.ab,
				cpas_core->camnoc_axi_port[i].applied_bw.hlos_vote.ib);
		}
	}

	CAM_INFO(CAM_CPAS, "ahb client curr vote level[%d]",
		cpas_core->ahb_bus_client.curr_vote_level);

	if (!cpas_core->full_state_dump) {
		CAM_DBG(CAM_CPAS, "CPAS full state dump not enabled");
		return 0;
	}

	/* This will traverse through all nodes in the tree and print stats */
	cam_cpas_dump_full_tree_state(cpas_hw, "state_dump_on_error");

	cam_cpas_dump_monitor_array(cpas_hw);

	if (cpas_core->internal_ops.print_poweron_settings)
		cpas_core->internal_ops.print_poweron_settings(cpas_hw);
	else
		CAM_DBG(CAM_CPAS, "No ops for print_poweron_settings");

	return 0;
}

static void cam_cpas_update_monitor_array(struct cam_hw_info *cpas_hw,
	const char *identifier_string, int32_t identifier_value)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_camnoc_info *camnoc_info = NULL;
	struct cam_cpas_cesta_info *cesta_info = cpas_core->cesta_info;
	struct cam_hw_soc_info *soc_info = &cpas_hw->soc_info;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_cpas_monitor *entry;
	int iterator, i, j = 0, vcd_idx, camnoc_reg_idx;
	uint32_t val = 0, camnoc_idx;

	CAM_CPAS_INC_MONITOR_HEAD(&cpas_core->monitor_head, &iterator);

	entry = &cpas_core->monitor_entries[iterator];
	entry->cpas_hw = cpas_hw;

	CAM_GET_TIMESTAMP(entry->timestamp);
	strlcpy(entry->identifier_string, identifier_string,
		sizeof(entry->identifier_string));

	entry->identifier_value = identifier_value;

	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		entry->axi_info[i].axi_port_name = cpas_core->axi_port[i].axi_port_name;
		memcpy(&entry->axi_info[i].curr_bw, &cpas_core->axi_port[i].curr_bw,
			sizeof(struct cam_cpas_axi_bw_info));

		/* camnoc bw value not applicable for mnoc ports */
		entry->axi_info[i].camnoc_bw = 0;
		memcpy(&entry->axi_info[i].applied_bw, &cpas_core->axi_port[i].applied_bw,
			sizeof(struct cam_cpas_axi_bw_info));
		entry->axi_info[i].is_drv_started = cpas_core->axi_port[i].is_drv_started;
	}

	memcpy(&entry->applied_camnoc_clk, &cpas_core->applied_camnoc_axi_rate,
		sizeof(struct cam_soc_util_clk_rates));
	entry->applied_ahb_level = cpas_core->ahb_bus_client.curr_vote_level;

	if ((cpas_core->streamon_clients > 0) &&
		(cpas_core->regbase_index[CAM_CPAS_REG_RPMH] != -1) &&
		soc_private->rpmh_info[CAM_RPMH_NUMBER_OF_BCMS]) {
		int reg_base_index =
			cpas_core->regbase_index[CAM_CPAS_REG_RPMH];
		void __iomem *rpmh_base =
			soc_info->reg_map[reg_base_index].mem_base;
		uint32_t fe_ddr_offset =
			soc_private->rpmh_info[CAM_RPMH_BCM_FE_OFFSET] +
			(0x4 * soc_private->rpmh_info[CAM_RPMH_BCM_DDR_INDEX]);
		uint32_t fe_mnoc_offset =
			soc_private->rpmh_info[CAM_RPMH_BCM_FE_OFFSET] +
			(0x4 * soc_private->rpmh_info[CAM_RPMH_BCM_MNOC_INDEX]);
		uint32_t be_ddr_offset =
			soc_private->rpmh_info[CAM_RPMH_BCM_BE_OFFSET] +
			(0x4 * soc_private->rpmh_info[CAM_RPMH_BCM_DDR_INDEX]);
		uint32_t be_mnoc_offset =
			soc_private->rpmh_info[CAM_RPMH_BCM_BE_OFFSET] +
			(0x4 * soc_private->rpmh_info[CAM_RPMH_BCM_MNOC_INDEX]);
		uint32_t be_shub_offset =
			soc_private->rpmh_info[CAM_RPMH_BCM_BE_OFFSET] +
			(0x4 * 1); /* i=1 for SHUB, hardcode for now */

		/*
		 * 0x4, 0x800 - DDR
		 * 0x800, 0x810 - mmnoc
		 */
		entry->fe_ddr = cam_io_r_mb(rpmh_base + fe_ddr_offset);
		entry->fe_mnoc = cam_io_r_mb(rpmh_base + fe_mnoc_offset);
		entry->be_ddr = cam_io_r_mb(rpmh_base + be_ddr_offset);
		entry->be_mnoc = cam_io_r_mb(rpmh_base + be_mnoc_offset);
		entry->be_shub = cam_io_r_mb(rpmh_base + be_shub_offset);

		CAM_DBG(CAM_CPAS,
			"fe_ddr=0x%x, fe_mnoc=0x%x, be_ddr=0x%x, be_mnoc=0x%x",
			entry->fe_ddr, entry->fe_mnoc, entry->be_ddr,
			entry->be_mnoc);
	}

	if ((cpas_core->streamon_clients > 0) &&
		cpas_core->regbase_index[CAM_CPAS_REG_CESTA] != -1) {
		int reg_base_index =
			cpas_core->regbase_index[CAM_CPAS_REG_CESTA];
		void __iomem *cesta_base =
			soc_info->reg_map[reg_base_index].mem_base;
		uint32_t vcd_base_inc = cesta_info->cesta_reg_info->vcd_currol.vcd_base_inc;
		uint32_t num_vcds = cesta_info->num_vcds;
		uint32_t vcd_curr_lvl_base = cesta_info->cesta_reg_info->vcd_currol.reg_offset;
		uint32_t cesta_vcd_curr_perfol_offset, cesta_vcd_curr_perfol_val;

		if (atomic_inc_not_zero(&cpas_core->soc_access_count)) {
			for (i = 0; i < num_vcds; i++) {
				vcd_idx = cesta_info->vcd_info[i].index;

				cesta_vcd_curr_perfol_offset = vcd_curr_lvl_base +
					(vcd_base_inc * vcd_idx);
				cesta_vcd_curr_perfol_val =
					cam_io_r_mb(cesta_base +
					cesta_vcd_curr_perfol_offset);
				entry->vcd_reg_debug_info.vcd_curr_lvl_debug_info[i].index =
					cesta_info->vcd_info[i].index;
				entry->vcd_reg_debug_info.vcd_curr_lvl_debug_info[i]
					.reg_value = cesta_vcd_curr_perfol_val;
			}
			atomic_dec(&cpas_core->soc_access_count);
			wake_up(&cpas_core->soc_access_count_wq);
		}
	}

	for (camnoc_idx = 0; camnoc_idx < cpas_core->num_valid_camnoc; camnoc_idx++) {

		camnoc_info = cpas_core->camnoc_info[camnoc_idx];
		camnoc_reg_idx = cpas_core->regbase_index[camnoc_info->reg_base];

		for (i = 0, j = 0; i < camnoc_info->specific_size; i++) {
			if ((!camnoc_info->specific[i].enable) ||
				(!camnoc_info->specific[i].maxwr_low.enable))
				continue;

			if (j >= CAM_CAMNOC_FILL_LVL_REG_INFO_MAX) {
				CAM_WARN(CAM_CPAS,
					"CPAS monitor reg info buffer full, max : %d",
					j);
				break;
			}

			entry->camnoc_port_name[camnoc_idx][j] =
				camnoc_info->specific[i].port_name;
			val = cam_io_r_mb(soc_info->reg_map[camnoc_reg_idx].mem_base +
				camnoc_info->specific[i].maxwr_low.offset);
			entry->camnoc_fill_level[camnoc_idx][j] = val;
			j++;
		}

		entry->num_camnoc_lvl_regs[camnoc_idx] = j;
	}

	if (soc_private->enable_smart_qos) {

		camnoc_info = cpas_core->camnoc_info[cpas_core->camnoc_rt_idx];
		camnoc_reg_idx = cpas_core->regbase_index[camnoc_info->reg_base];

		for (i = 0; i < soc_private->smart_qos_info->num_rt_wr_nius; i++) {
			struct cam_cpas_tree_node *niu_node =
				soc_private->smart_qos_info->rt_wr_niu_node[i];

			entry->rt_wr_niu_pri_lut_high[i] =
				cam_io_r_mb(soc_info->reg_map[camnoc_reg_idx].mem_base +
					niu_node->pri_lut_high_offset);

			entry->rt_wr_niu_pri_lut_low[i] =
				cam_io_r_mb(soc_info->reg_map[camnoc_reg_idx].mem_base +
					niu_node->pri_lut_low_offset);
		}
	}
}

static void cam_cpas_dump_monitor_array(
	struct cam_hw_info *cpas_hw)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	int i = 0, k = 0;
	int64_t state_head = 0;
	uint32_t index, num_entries, oldest_entry, camnoc_idx, j;
	uint64_t ms, hrs, min, sec;
	struct cam_cpas_monitor *entry;
	struct timespec64 curr_timestamp;
	char log_buf[CAM_CPAS_LOG_BUF_LEN];
	size_t len;
	uint8_t vcd_index;
	struct cam_cpas_cesta_info *cesta_info = cpas_core->cesta_info;
	struct cam_camnoc_info *camnoc_info;

	if (!cpas_core->full_state_dump)
		return;

	state_head = atomic64_read(&cpas_core->monitor_head);

	if (state_head == -1) {
		CAM_WARN(CAM_CPAS, "No valid entries in cpas monitor array");
		return;
	} else if (state_head < CAM_CPAS_MONITOR_MAX_ENTRIES) {
		num_entries = state_head;
		oldest_entry = 0;
	} else {
		num_entries = CAM_CPAS_MONITOR_MAX_ENTRIES;
		div_u64_rem(state_head + 1,
			CAM_CPAS_MONITOR_MAX_ENTRIES, &oldest_entry);
	}

	CAM_GET_TIMESTAMP(curr_timestamp);
	CAM_CONVERT_TIMESTAMP_FORMAT(curr_timestamp, hrs, min, sec, ms);

	CAM_INFO(CAM_CPAS,
		"**** %llu:%llu:%llu.%llu : ======== Dumping monitor information ===========",
		hrs, min, sec, ms);

	index = oldest_entry;

	for (i = 0; i < num_entries; i++) {
		entry = &cpas_core->monitor_entries[index];
		CAM_CONVERT_TIMESTAMP_FORMAT(entry->timestamp, hrs, min, sec, ms);
		log_buf[0] = '\0';

		CAM_INFO(CAM_CPAS,
			"**** %llu:%llu:%llu.%llu : Index[%d] Identifier[%s][%d] camnoc=sw : %ld, hw clients [%ld %ld][%ld %ld][%ld %ld], ahb=%d",
			hrs, min, sec, ms,
			index,
			entry->identifier_string, entry->identifier_value,
			entry->applied_camnoc_clk.sw_client,
			entry->applied_camnoc_clk.hw_client[0].high,
			entry->applied_camnoc_clk.hw_client[0].low,
			entry->applied_camnoc_clk.hw_client[1].high,
			entry->applied_camnoc_clk.hw_client[1].low,
			entry->applied_camnoc_clk.hw_client[2].high,
			entry->applied_camnoc_clk.hw_client[2].low,
			entry->applied_ahb_level);

		for (j = 0; j < cpas_core->num_axi_ports; j++) {
			if ((entry->axi_info[j].applied_bw.vote_type == CAM_CPAS_VOTE_TYPE_DRV) &&
				!cpas_core->force_hlos_drv)
				CAM_INFO(CAM_CPAS,
					"BW [%s] : DRV started:%s high=[%lld %lld], low=[%lld %lld]",
					entry->axi_info[j].axi_port_name,
					CAM_BOOL_TO_YESNO(entry->axi_info[j].is_drv_started),
					entry->axi_info[j].applied_bw.drv_vote.high.ab,
					entry->axi_info[j].applied_bw.drv_vote.high.ib,
					entry->axi_info[j].applied_bw.drv_vote.low.ab,
					entry->axi_info[j].applied_bw.drv_vote.low.ib);

			else
				CAM_INFO(CAM_CPAS,
					"BW [%s] : HLOS ab=%lld, ib=%lld, DRV high_ab=%lld, high_ib=%lld, low_ab=%lld, low_ib=%lld",
					entry->axi_info[j].axi_port_name,
					entry->axi_info[j].applied_bw.hlos_vote.ab,
					entry->axi_info[j].applied_bw.hlos_vote.ib);
		}

		if (cpas_core->regbase_index[CAM_CPAS_REG_RPMH] != -1) {
			CAM_INFO(CAM_CPAS,
				"fe_ddr=0x%x, fe_mnoc=0x%x, be_ddr=0x%x, be_mnoc=0x%x, be_shub=0x%x",
				entry->fe_ddr, entry->fe_mnoc,
				entry->be_ddr, entry->be_mnoc, entry->be_shub);
		}

		if (cpas_core->regbase_index[CAM_CPAS_REG_CESTA] != -1) {
			uint32_t vcd_base_inc =
				cesta_info->cesta_reg_info->vcd_currol.vcd_base_inc;
			uint32_t vcd_curr_lvl_base =
				cesta_info->cesta_reg_info->vcd_currol.reg_offset;
			uint32_t reg_offset;
			uint32_t num_vcds = cesta_info->num_vcds;

			for (k = 0; k < num_vcds; k++) {
				vcd_index =
					entry->vcd_reg_debug_info.vcd_curr_lvl_debug_info[k].index;
				reg_offset = vcd_curr_lvl_base + (vcd_base_inc * vcd_index);
				CAM_INFO(CAM_CPAS,
					"VCD[index=%d, type=%d, name=%s] [offset=0x%x, value=0x%x]",
					vcd_index,
					cesta_info->vcd_info[k].type,
					cesta_info->vcd_info[k].clk,
					reg_offset,
					entry->vcd_reg_debug_info.vcd_curr_lvl_debug_info[k]
					.reg_value);
			}
		}

		for (camnoc_idx = 0; camnoc_idx < cpas_core->num_valid_camnoc; camnoc_idx++) {

			camnoc_info = cpas_core->camnoc_info[camnoc_idx];
			log_buf[0] = '\0';
			len = 0;

			for (j = 0; j < entry->num_camnoc_lvl_regs[camnoc_idx]; j++) {
				len += scnprintf((log_buf + len),
					(CAM_CPAS_LOG_BUF_LEN - len), " %s:[%d %d]",
					entry->camnoc_port_name[camnoc_idx][j],
					(entry->camnoc_fill_level[camnoc_idx][j] & 0x7FF),
					(entry->camnoc_fill_level[camnoc_idx][j] & 0x7F0000)
					>> 16);
			}

			CAM_INFO(CAM_CPAS, "%s REG[Queued Pending] %s",
				camnoc_info->camnoc_name, log_buf);
		}

		if (soc_private->enable_smart_qos) {
			len = 0;
			for (j = 0; j < soc_private->smart_qos_info->num_rt_wr_nius; j++) {
				struct cam_cpas_tree_node *niu_node =
					soc_private->smart_qos_info->rt_wr_niu_node[j];

				len += scnprintf((log_buf + len),
					(CAM_CPAS_LOG_BUF_LEN - len), " [%s: high 0x%x low 0x%x]",
					niu_node->node_name,
					entry->rt_wr_niu_pri_lut_high[j],
					entry->rt_wr_niu_pri_lut_low[j]);
			}
			CAM_INFO(CAM_CPAS, "SmartQoS [Node: Pri_lut] %s", log_buf);
		}

		index = (index + 1) % CAM_CPAS_MONITOR_MAX_ENTRIES;
	}
}

static void *cam_cpas_user_dump_state_monitor_array_info(
	void *dump_struct, uint8_t *addr_ptr)
{
	uint64_t *addr;
	struct cam_common_hw_dump_header *hdr;
	struct cam_cpas_monitor *monitor = (struct cam_cpas_monitor *)dump_struct;
	struct cam_cpas_axi_port_debug_info *axi_info = NULL;
	struct cam_cpas_cesta_vcd_reg_debug_info *vcd_reg_debug_info = NULL;
	struct cam_hw_info *cpas_hw = (struct cam_hw_info *) monitor->cpas_hw;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_tree_node *niu_node;
	uint8_t *dst;
	uint32_t num_vcds = CAM_CPAS_MAX_CESTA_VCD_NUM, camnoc_idx, i;

	addr = (uint64_t *)addr_ptr;

	*addr++ = monitor->timestamp.tv_sec;
	*addr++ = monitor->timestamp.tv_nsec / NSEC_PER_USEC;

	*addr++ = monitor->identifier_value;
	*addr++ = monitor->applied_camnoc_clk.sw_client,
	*addr++ = monitor->applied_camnoc_clk.hw_client[0].high,
	*addr++ = monitor->applied_camnoc_clk.hw_client[0].low,
	*addr++ = monitor->applied_camnoc_clk.hw_client[1].high,
	*addr++ = monitor->applied_camnoc_clk.hw_client[1].low,
	*addr++ = monitor->applied_camnoc_clk.hw_client[2].high,
	*addr++ = monitor->applied_camnoc_clk.hw_client[2].low,
	*addr++ = monitor->applied_ahb_level;
	*addr++ = cpas_core->num_valid_camnoc;

	if (soc_private->enable_smart_qos)
		*addr++ = soc_private->smart_qos_info->num_rt_wr_nius;

	*addr++ = num_vcds;
	*addr++ = cpas_core->num_axi_ports;

	*addr++ = monitor->fe_ddr;
	*addr++ = monitor->be_ddr;
	*addr++ = monitor->fe_mnoc;
	*addr++ = monitor->be_mnoc;
	*addr++ = monitor->be_shub;

	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		axi_info = &monitor->axi_info[i];
		dst = (uint8_t *)addr;
		hdr = (struct cam_common_hw_dump_header *)dst;

		if (axi_info->applied_bw.vote_type == CAM_CPAS_VOTE_TYPE_DRV) {
			scnprintf(hdr->tag, CAM_COMMON_HW_DUMP_TAG_MAX_LEN, "%s.%s.%s:",
				axi_info->axi_port_name, "DRV",
				CAM_BOOL_TO_YESNO(axi_info->is_drv_started));
			addr = (uint64_t *)(dst + sizeof(struct cam_common_hw_dump_header));
			*addr++ = axi_info->applied_bw.drv_vote.high.ab;
			*addr++ = axi_info->applied_bw.drv_vote.high.ib;
			*addr++ = axi_info->applied_bw.drv_vote.low.ab;
			*addr++ = axi_info->applied_bw.drv_vote.low.ib;
		} else {
			scnprintf(hdr->tag, CAM_COMMON_HW_DUMP_TAG_MAX_LEN, "%s.%s.%s:",
				axi_info->axi_port_name, "HLOS",
				CAM_BOOL_TO_YESNO(axi_info->is_drv_started));
			addr = (uint64_t *)(dst + sizeof(struct cam_common_hw_dump_header));
			*addr++ = axi_info->applied_bw.hlos_vote.ab;
			*addr++ = axi_info->applied_bw.hlos_vote.ib;
		}
	}

	for (camnoc_idx = 0; camnoc_idx < cpas_core->num_valid_camnoc; camnoc_idx++) {
		*addr++ = monitor->num_camnoc_lvl_regs[camnoc_idx];
		for (i = 0; i < monitor->num_camnoc_lvl_regs[camnoc_idx]; i++) {
			dst = (uint8_t *)addr;
			hdr = (struct cam_common_hw_dump_header *)dst;
			scnprintf(hdr->tag, CAM_COMMON_HW_DUMP_TAG_MAX_LEN, "%s:[%d %d].",
				monitor->camnoc_port_name[camnoc_idx][i],
				monitor->camnoc_fill_level[camnoc_idx][i] & 0x7FF,
				(monitor->camnoc_fill_level[camnoc_idx][i] & 0x7F0000) >> 16);
			addr = (uint64_t *)(dst + sizeof(struct cam_common_hw_dump_header));
		}
	}

	if (soc_private->enable_smart_qos) {
		for (i = 0; i < soc_private->smart_qos_info->num_rt_wr_nius; i++) {
			niu_node = soc_private->smart_qos_info->rt_wr_niu_node[i];
			dst = (uint8_t *)addr;
			hdr = (struct cam_common_hw_dump_header *)dst;
			scnprintf(hdr->tag, CAM_COMMON_HW_DUMP_TAG_MAX_LEN, "%s:", niu_node->node_name);
			addr = (uint64_t *)(dst + sizeof(struct cam_common_hw_dump_header));
			*addr++ = monitor->rt_wr_niu_pri_lut_high[i];
			*addr++ = monitor->rt_wr_niu_pri_lut_low[i];
		}
	}

	vcd_reg_debug_info = &monitor->vcd_reg_debug_info;

	for (i = 0; i < num_vcds; i++) {
		*addr++ = vcd_reg_debug_info->vcd_curr_lvl_debug_info[i].index;
		*addr++ = vcd_reg_debug_info->vcd_curr_lvl_debug_info[i].reg_value;
	}

	return addr;
}

/**
 * cam_cpas_dump_state_monitor_array_info()
 *
 * @brief     : dump the state monitor array info, dump from monitor_head
 *              to save state information in time order.
 * @cpas_hw   : hardware information
 * @dump_info : dump payload
 */
static int cam_cpas_dump_state_monitor_array_info(
	struct cam_hw_info *cpas_hw,
	struct cam_req_mgr_dump_info *dump_info)
{
	int                             rc = 0;
	int                             i, j;
	struct cam_common_hw_dump_args  dump_args;
	size_t                          buf_len;
	size_t                          remain_len;
	uint32_t                        min_len = 0, camnoc_idx;
	uintptr_t                       cpu_addr;
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	int64_t                         state_head = 0;
	uint32_t                        index, num_entries, oldest_entry;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_cpas_monitor         *entry;
	uint32_t monitor_idx;

	state_head = atomic64_read(&cpas_core->monitor_head);
	if (state_head == -1) {
		CAM_WARN(CAM_CPAS, "No valid entries in cpas monitor array");
		return 0;
	} else if (state_head < CAM_CPAS_MONITOR_MAX_ENTRIES) {
		num_entries = state_head;
		oldest_entry = 0;
	} else {
		num_entries = CAM_CPAS_MONITOR_MAX_ENTRIES;
		div_u64_rem(state_head + 1,
			CAM_CPAS_MONITOR_MAX_ENTRIES, &oldest_entry);
	}

	monitor_idx = index = oldest_entry;

	rc = cam_mem_get_cpu_buf(dump_info->buf_handle, &cpu_addr, &buf_len);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Invalid handle %u rc %d",
			dump_info->buf_handle, rc);
		return rc;
	}

	if (buf_len <= dump_info->offset) {
		CAM_WARN(CAM_CPAS, "Dump buffer overshoot len %zu offset %zu",
			buf_len, dump_info->offset);
		cam_mem_put_cpu_buf(dump_info->buf_handle);
		return -ENOSPC;
	}

	remain_len = buf_len - dump_info->offset;
	for (i = 0; i < num_entries; i++) {
		min_len += sizeof(struct cam_common_hw_dump_header) +
			CAM_CPAS_DUMP_NUM_WORDS_COMM * sizeof(uint64_t);
		entry = &cpas_core->monitor_entries[monitor_idx];
		for (j = 0; j < cpas_core->num_axi_ports; j++) {
			if (entry->axi_info[j].applied_bw.vote_type ==
				CAM_CPAS_VOTE_TYPE_DRV) {
				min_len += sizeof(struct cam_common_hw_dump_header) +
					CAM_CPAS_DUMP_NUM_WORDS_VOTE_TYEP_DRV * sizeof(uint64_t);
			} else {
				min_len += sizeof(struct cam_common_hw_dump_header) +
					CAM_CPAS_DUMP_NUM_WORDS_VOTE_TYEP_HLOS * sizeof(uint64_t);
			}
		}

		for (camnoc_idx = 0; camnoc_idx < cpas_core->num_valid_camnoc; camnoc_idx++) {
			min_len += sizeof(uint64_t);
			for (j = 0; j < entry->num_camnoc_lvl_regs[camnoc_idx]; j++)
				min_len += sizeof(struct cam_common_hw_dump_header);
		}

		if (soc_private->enable_smart_qos) {
			for (j = 0; j < soc_private->smart_qos_info->num_rt_wr_nius; j++)
				min_len += sizeof(struct cam_common_hw_dump_header) +
					CAM_CPAS_DUMP_NUM_WORDS_RT_WR_NIUS * sizeof(uint64_t);
		}

		for (j = 0; j < CAM_CPAS_MAX_CESTA_VCD_NUM; j++)
			min_len += CAM_CPAS_DUMP_NUM_WORDS_VCD_CURR_LVL * sizeof(uint64_t);

		monitor_idx = (monitor_idx + 1) % CAM_CPAS_MONITOR_MAX_ENTRIES;
	}

	if (remain_len < min_len) {
		CAM_WARN(CAM_CPAS, "Dump buffer exhaust remain %zu min %u",
			remain_len, min_len);
		cam_mem_put_cpu_buf(dump_info->buf_handle);
		return -ENOSPC;
	}

	dump_args.req_id = dump_info->req_id;
	dump_args.cpu_addr = cpu_addr;
	dump_args.buf_len = buf_len;
	dump_args.offset = dump_info->offset;
	dump_args.ctxt_to_hw_map = NULL;
	for (i = 0; i < num_entries; i++) {
		rc = cam_common_user_dump_helper(&dump_args,
			cam_cpas_user_dump_state_monitor_array_info,
			&cpas_core->monitor_entries[index],
			sizeof(uint64_t), "CPAS_MONITOR.%d.%s:", index,
			&cpas_core->monitor_entries[index].identifier_string);
		if (rc) {
			CAM_ERR(CAM_CPAS, "Dump state info failed, rc: %d", rc);
			cam_mem_put_cpu_buf(dump_info->buf_handle);
			return rc;
		}

		index = (index + 1) % CAM_CPAS_MONITOR_MAX_ENTRIES;
	}

	dump_info->offset = dump_args.offset;
	cam_mem_put_cpu_buf(dump_info->buf_handle);

	return rc;
}

static int cam_cpas_log_event(struct cam_hw_info *cpas_hw,
	const char *identifier_string, int32_t identifier_value)
{
	cam_cpas_update_monitor_array(cpas_hw, identifier_string,
		identifier_value);

	return 0;
}

static int cam_cpas_select_qos(struct cam_hw_info *cpas_hw,
	uint32_t selection_mask)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	int rc = 0;

	mutex_lock(&cpas_hw->hw_mutex);

	if (cpas_hw->hw_state == CAM_HW_STATE_POWER_UP) {
		CAM_ERR(CAM_CPAS,
			"Hw already in power up state, can't change QoS settings");
		rc = -EINVAL;
		goto done;
	}

	if (cpas_core->internal_ops.setup_qos_settings) {
		rc = cpas_core->internal_ops.setup_qos_settings(cpas_hw,
			selection_mask);
		if (rc)
			CAM_ERR(CAM_CPAS, "Failed in changing QoS %d", rc);
	} else {
		CAM_WARN(CAM_CPAS, "No ops for qos_settings");
	}

done:
	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;
}

static int cam_cpas_hw_enable_tpg_mux_sel(struct cam_hw_info *cpas_hw,
	uint32_t tpg_mux)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	int rc = 0;

	mutex_lock(&cpas_hw->hw_mutex);

	if (cpas_core->internal_ops.set_tpg_mux_sel) {
		rc = cpas_core->internal_ops.set_tpg_mux_sel(
			cpas_hw, tpg_mux);
		if (rc) {
			CAM_ERR(CAM_CPAS,
				"failed in tpg mux selection rc=%d",
				rc);
		}
	} else {
		CAM_ERR(CAM_CPAS,
			"CPAS tpg mux sel not enabled");
		rc = -EINVAL;
	}

	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;
}

static int cam_cpas_activate_cache(
	struct cam_hw_info *cpas_hw,
	struct cam_sys_cache_info *cache_info)
{
	int rc = 0;

	mutex_lock(&cpas_hw->hw_mutex);
	cache_info->ref_cnt++;
	if (cache_info->ref_cnt > 1) {
		mutex_unlock(&cpas_hw->hw_mutex);
		CAM_DBG(CAM_CPAS, "Cache: %s has already been activated cnt: %d",
			cache_info->name, cache_info->ref_cnt);
		return rc;
	}

	rc = llcc_slice_activate(cache_info->slic_desc);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Failed to activate cache:%s",
			cache_info->name);
		goto end;
	}

	mutex_unlock(&cpas_hw->hw_mutex);
	CAM_DBG(CAM_CPAS, "Activated cache:%s", cache_info->name);
	return rc;

end:
	cache_info->ref_cnt--;
	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;
}

static int cam_cpas_deactivate_cache(
	struct cam_hw_info *cpas_hw,
	struct cam_sys_cache_info *cache_info)
{
	int rc = 0;

	mutex_lock(&cpas_hw->hw_mutex);
	if (!cache_info->ref_cnt) {
		mutex_unlock(&cpas_hw->hw_mutex);
		CAM_ERR(CAM_CPAS, "Unbalanced deactivate");
		return -EFAULT;
	}

	cache_info->ref_cnt--;
	if (cache_info->ref_cnt) {
		mutex_unlock(&cpas_hw->hw_mutex);
		CAM_DBG(CAM_CPAS, "activate cnt for: %s non-zero: %d",
			cache_info->name, cache_info->ref_cnt);
		return rc;
	}

	rc = llcc_slice_deactivate(cache_info->slic_desc);
	if (rc)
		CAM_ERR(CAM_CPAS, "Failed to deactivate cache:%s",
			cache_info->name);

	mutex_unlock(&cpas_hw->hw_mutex);
	CAM_DBG(CAM_CPAS, "De-activated cache:%s", cache_info->name);
	return rc;
}

#if IS_ENABLED(CONFIG_SPECTRA_LLCC_STALING)
static int cam_cpas_configure_staling_cache(
	struct cam_hw_info *cpas_hw,
	struct cam_sys_cache_info *cache_info,
	struct cam_sys_cache_local_info *sys_cache_info)
{
	int rc = 0;
	struct llcc_staling_mode_params staling_params;

	mutex_lock(&cpas_hw->hw_mutex);
	switch (sys_cache_info->mode) {
	case CAM_LLCC_STALING_MODE_CAPACITY: {
		staling_params.staling_mode = LLCC_STALING_MODE_CAPACITY;
		break;
	}
	case CAM_LLCC_STALING_MODE_NOTIFY: {
		staling_params.staling_mode = LLCC_STALING_MODE_NOTIFY;
		break;
	}
	default:
		CAM_ERR(CAM_CPAS, "CPAS LLCC sys cache mode is not valid =%d"
				, sys_cache_info->mode);
		break;
	}

	switch (sys_cache_info->op_type) {
	case CAM_LLCC_NOTIFY_STALING_EVICT: {
		staling_params.notify_params.op = LLCC_NOTIFY_STALING_WRITEBACK;
		break;
	}
	default:
		CAM_ERR(CAM_CPAS, "CPAS LLCC sys cache op_type is not valid =%d"
				, sys_cache_info->op_type);
		break;
	}
	staling_params.notify_params.staling_distance
		= cache_info->staling_distance;
	rc = llcc_configure_staling_mode(cache_info->slic_desc,
			&staling_params);
	if (!rc) {
		cache_info->staling_distance = sys_cache_info->staling_distance;
		cache_info->mode = sys_cache_info->mode;
		cache_info->op_type = sys_cache_info->op_type;
	} else if (rc == -EOPNOTSUPP) {
		CAM_ERR(CAM_CPAS, "llcc staling feature is not supported cache:%s",
			cache_info->name);
	} else if (rc) {
		CAM_ERR(CAM_CPAS, "Failed to enable llcc notif cache:%s",
			cache_info->name);
	}

	mutex_unlock(&cpas_hw->hw_mutex);
	CAM_DBG(CAM_CPAS,
		"llcc notif cache name:%s staling_distance %d cache mode :%d cache op_type :%s",
		cache_info->name, cache_info->staling_distance,
		cache_info->mode, cache_info->op_type);
	return rc;
}

static int cam_cpas_notif_stalling_inc_cache(
	struct cam_hw_info *cpas_hw,
	struct cam_sys_cache_info *cache_info)
{
	int rc = 0;

	mutex_lock(&cpas_hw->hw_mutex);
	rc = llcc_notif_staling_inc_counter(cache_info->slic_desc);
	if (rc == -EOPNOTSUPP)
		CAM_ERR(CAM_CPAS, "llcc notif stalling inc not supported: %s",
			cache_info->name);
	else if (rc)
		CAM_ERR(CAM_CPAS, "Failed to llcc staling frame trigger:%s",
			cache_info->name);

	mutex_unlock(&cpas_hw->hw_mutex);
	CAM_DBG(CAM_CPAS, "llcc staling frame triggered cache:%s",
		cache_info->name);
	return rc;
}
#endif

static inline int cam_cpas_validate_cache_type(
	uint32_t num_caches, enum cam_sys_cache_config_types type)
{
	if ((!num_caches) || (type < 0) || (type >= CAM_LLCC_MAX))
		return -EINVAL;
	else
		return 0;
}

static int cam_cpas_get_slice_id(
	struct cam_hw_info *cpas_hw,
	enum cam_sys_cache_config_types type)
{
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *)cpas_hw->soc_info.soc_private;
	uint32_t num_caches = soc_private->num_caches;
	int scid = -1, i;

	if (cam_cpas_validate_cache_type(num_caches, type))
		goto end;

	for (i = 0; i < num_caches; i++) {
		if (type == soc_private->llcc_info[i].type) {
			scid = soc_private->llcc_info[i].scid;
			CAM_DBG(CAM_CPAS, "Cache:%s type:%d scid:%d",
				soc_private->llcc_info[i].name, type, scid);
			break;
		}
	}

end:
	return scid;
}

static int cam_cpas_activate_cache_slice(
	struct cam_hw_info *cpas_hw,
	enum cam_sys_cache_config_types type)
{
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *)cpas_hw->soc_info.soc_private;
	uint32_t num_caches = soc_private->num_caches;
	int rc = 0, i;

	CAM_DBG(CAM_CPAS, "Activate type: %d", type);
	if (cam_cpas_validate_cache_type(num_caches, type))
		goto end;

	for (i = 0; i < num_caches; i++) {
		if (type == soc_private->llcc_info[i].type)
			rc = cam_cpas_activate_cache(cpas_hw,
				&soc_private->llcc_info[i]);
	}

end:
	return rc;
}

static int cam_cpas_deactivate_cache_slice(
	struct cam_hw_info *cpas_hw,
	enum cam_sys_cache_config_types type)
{
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *)cpas_hw->soc_info.soc_private;
	uint32_t num_caches = soc_private->num_caches;
	int rc = 0, i;

	CAM_DBG(CAM_CPAS, "De-activate type: %d", type);
	if (cam_cpas_validate_cache_type(num_caches, type))
		goto end;

	for (i = 0; i < num_caches; i++) {
		if (type == soc_private->llcc_info[i].type)
			rc = cam_cpas_deactivate_cache(cpas_hw,
				&soc_private->llcc_info[i]);
	}

end:
	return rc;
}

#if IS_ENABLED(CONFIG_SPECTRA_LLCC_STALING)
static int cam_cpas_configure_staling_cache_slice(
	struct cam_hw_info *cpas_hw,
	struct cam_sys_cache_local_info sys_cache_info)
{
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *)cpas_hw->soc_info.soc_private;
	uint32_t num_caches = soc_private->num_caches;
	int rc = 0, i;

	CAM_DBG(CAM_CPAS, "De-activate type: %d", sys_cache_info.type);
	if (cam_cpas_validate_cache_type(num_caches, sys_cache_info.type))
		goto end;

	for (i = 0; i < num_caches; i++) {
		if (sys_cache_info.type == soc_private->llcc_info[i].type) {
			rc = cam_cpas_configure_staling_cache(cpas_hw,
				&soc_private->llcc_info[i], &sys_cache_info);
			if (rc) {
				CAM_ERR(CAM_CPAS, "llc sys cache type %d config failed, rc: %d",
					soc_private->llcc_info[i].type, rc);
			}
			break;
		}
	}

end:
	return rc;
}

static int cam_cpas_notif_stalling_inc_cache_slice(
	struct cam_hw_info *cpas_hw,
	enum cam_sys_cache_config_types type)
{
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *)cpas_hw->soc_info.soc_private;
	uint32_t num_caches = soc_private->num_caches;
	int rc = 0, i;

	CAM_DBG(CAM_CPAS, "De-activate type: %d", type);
	if (cam_cpas_validate_cache_type(num_caches, type))
		goto end;

	for (i = 0; i < num_caches; i++) {
		if (type == soc_private->llcc_info[i].type)
			rc = cam_cpas_notif_stalling_inc_cache(cpas_hw,
				&soc_private->llcc_info[i]);
	}

end:
	return rc;
}

#else
static int cam_cpas_configure_staling_cache_slice(
	struct cam_hw_info *cpas_hw,
	struct cam_sys_cache_local_info sys_cache_info)
{
	return -EOPNOTSUPP;
}

static int cam_cpas_notif_stalling_inc_cache_slice(
	struct cam_hw_info *cpas_hw,
	enum cam_sys_cache_config_types type)
{
	return -EOPNOTSUPP;
}
#endif

static int cam_cpas_hw_csid_input_core_info_update(struct cam_hw_info *cpas_hw,
	int csid_idx, int sfe_idx, bool set_port)
{
	int i, j, rc = 0;
	char client_name[CAM_HW_IDENTIFIER_LENGTH + 3];
	int32_t client_indx = -1;

	struct cam_cpas_private_soc *soc_private =
			(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	struct cam_cpas_tree_node *tree_node = NULL;

	if (!soc_private->enable_cam_ddr_drv || cpas_core->force_hlos_drv)
		return 0;

	if ((csid_idx < 0) || (sfe_idx < 0)) {
		CAM_ERR(CAM_CPAS, "Invalid core info csid:%d sfe:%d", csid_idx, sfe_idx);
		return -EINVAL;
	}

	snprintf(client_name, sizeof(client_name), "%s%d", "sfe", sfe_idx);

	rc = cam_common_util_get_string_index(soc_private->client_name,
		soc_private->num_clients, client_name, &client_indx);

	if (!cpas_core->cpas_client[client_indx]->is_drv_dyn)
		return 0;

	for (i = 0; i < CAM_CPAS_PATH_DATA_MAX; i++) {
		for (j = 0; j < CAM_CPAS_TRANSACTION_MAX; j++) {
			tree_node = cpas_core->cpas_client[client_indx]->tree_node[i][j];
			if (!tree_node)
				continue;

			if (set_port)
				tree_node->drv_voting_idx = CAM_CPAS_PORT_DRV_0 + csid_idx;
			else
				tree_node->drv_voting_idx = CAM_CPAS_PORT_DRV_DYN;
		}
	}

	return rc;
}

static int cam_cpas_hw_enable_domain_id_clks(struct cam_hw_info *cpas_hw,
	bool enable)
{
	int rc = 0, i;
	struct cam_cpas_private_soc *soc_private =
		(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_cpas_domain_id_support_clks *domain_id_clks =
		soc_private->domain_id_clks;

	if (!soc_private->domain_id_info.domain_id_supported) {
		CAM_DBG(CAM_CPAS, "Domain-id not supported on target");
		return -EINVAL;
	}

	if (enable) {
		for (i = 0; i < domain_id_clks->number_clks; i++) {
			rc = cam_soc_util_clk_enable(&cpas_hw->soc_info, CAM_CLK_SW_CLIENT_IDX,
				true, domain_id_clks->clk_idx[i], 0);
			if (rc) {
				CAM_ERR(CAM_CPAS, "Domain-id clk %s enable failed, rc: %d",
					domain_id_clks->clk_names[i], i);
				goto clean_up;
			}
		}
		CAM_DBG(CAM_CPAS, "Domain-id clks enable success");
	} else {
		for (i = 0; i < domain_id_clks->number_clks; i++) {
			rc = cam_soc_util_clk_disable(&cpas_hw->soc_info, CAM_CLK_SW_CLIENT_IDX,
				true, domain_id_clks->clk_idx[i]);
			if (rc)
				CAM_WARN(CAM_CPAS, "Domain-id clk %s disable failed, rc: %d",
					domain_id_clks->clk_names[i], rc);
		}
		if (!rc)
			CAM_DBG(CAM_CPAS, "Domain-id clks disable success");
	}

	return rc;

clean_up:
	for (--i; i >= 0; i--)
		cam_soc_util_clk_disable(&cpas_hw->soc_info, CAM_CLK_SW_CLIENT_IDX, true,
			domain_id_clks->clk_idx[i]);

	return rc;
}

static int cam_cpas_hw_csid_process_resume(struct cam_hw_info *cpas_hw, uint32_t csid_idx)
{
	int i, rc = 0;

	struct cam_cpas_private_soc *soc_private =
			(struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;

	if (!soc_private->enable_cam_ddr_drv)
		return 0;

	for (i = 0; i < cpas_core->num_axi_ports; i++) {
		if (!cpas_core->axi_port[i].bus_client.common_data.is_drv_port ||
			!cpas_core->axi_port[i].is_drv_started ||
			(cpas_core->axi_port[i].drv_idx != (CAM_CPAS_PORT_DRV_0 + csid_idx)))
			continue;

		/* Apply last applied bw again to applicable DRV port */
		rc = cam_cpas_util_vote_drv_bus_client_bw(&cpas_core->axi_port[i].bus_client,
			&cpas_core->axi_port[i].applied_bw, &cpas_core->axi_port[i].applied_bw);
		if (rc) {
			CAM_ERR(CAM_CPAS, "Failed in BW update on resume rc:%d", rc);
			goto end;
		}

		/* Trigger channel switch for RSC dev */
		rc = cam_cpas_drv_channel_switch_for_dev(cpas_core->axi_port[i].cam_rsc_dev);
		if (rc) {
			CAM_ERR(CAM_CPAS,
				"Port[%s] failed in channel switch during resume rc:%d",
				cpas_core->axi_port[i].axi_port_name, rc);
			goto end;
		}
	}

end:
	return rc;
}

static int cam_cpas_hw_process_cmd(void *hw_priv,
	uint32_t cmd_type, void *cmd_args, uint32_t arg_size)
{
	int rc = -EINVAL;

	if (!hw_priv || !cmd_args ||
		(cmd_type >= CAM_CPAS_HW_CMD_INVALID)) {
		CAM_ERR(CAM_CPAS, "Invalid arguments %pK %pK %d",
			hw_priv, cmd_args, cmd_type);
		return -EINVAL;
	}

	switch (cmd_type) {
	case CAM_CPAS_HW_CMD_REGISTER_CLIENT: {
		struct cam_cpas_register_params *register_params;

		if (sizeof(struct cam_cpas_register_params) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		register_params = (struct cam_cpas_register_params *)cmd_args;
		rc = cam_cpas_hw_register_client(hw_priv, register_params);
		break;
	}
	case CAM_CPAS_HW_CMD_UNREGISTER_CLIENT: {
		uint32_t *client_handle;

		if (sizeof(uint32_t) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		client_handle = (uint32_t *)cmd_args;
		rc = cam_cpas_hw_unregister_client(hw_priv, *client_handle);
		break;
	}
	case CAM_CPAS_HW_CMD_REG_WRITE: {
		struct cam_cpas_hw_cmd_reg_read_write *reg_write;

		if (sizeof(struct cam_cpas_hw_cmd_reg_read_write) !=
			arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		reg_write =
			(struct cam_cpas_hw_cmd_reg_read_write *)cmd_args;
		rc = cam_cpas_hw_reg_write(hw_priv, reg_write->client_handle,
			reg_write->reg_base, reg_write->offset, reg_write->mb,
			reg_write->value);
		break;
	}
	case CAM_CPAS_HW_CMD_REG_READ: {
		struct cam_cpas_hw_cmd_reg_read_write *reg_read;

		if (sizeof(struct cam_cpas_hw_cmd_reg_read_write) !=
			arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		reg_read =
			(struct cam_cpas_hw_cmd_reg_read_write *)cmd_args;
		rc = cam_cpas_hw_reg_read(hw_priv,
			reg_read->client_handle, reg_read->reg_base,
			reg_read->offset, reg_read->mb, &reg_read->value);

		break;
	}
	case CAM_CPAS_HW_CMD_AHB_VOTE: {
		struct cam_cpas_hw_cmd_ahb_vote *cmd_ahb_vote;

		if (sizeof(struct cam_cpas_hw_cmd_ahb_vote) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		cmd_ahb_vote = (struct cam_cpas_hw_cmd_ahb_vote *)cmd_args;
		rc = cam_cpas_hw_update_ahb_vote(hw_priv,
			cmd_ahb_vote->client_handle, cmd_ahb_vote->ahb_vote);
		break;
	}
	case CAM_CPAS_HW_CMD_AXI_VOTE: {
		struct cam_cpas_hw_cmd_axi_vote *cmd_axi_vote;

		if (sizeof(struct cam_cpas_hw_cmd_axi_vote) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		cmd_axi_vote = (struct cam_cpas_hw_cmd_axi_vote *)cmd_args;
		rc = cam_cpas_hw_update_axi_vote(hw_priv,
			cmd_axi_vote->client_handle, cmd_axi_vote->axi_vote);
		break;
	}
	case CAM_CPAS_HW_CMD_LOG_VOTE: {
		bool *ddr_only;

		if (sizeof(bool) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		ddr_only = (bool *) cmd_args;
		rc = cam_cpas_log_vote(hw_priv, *ddr_only);
		break;
	}

	case CAM_CPAS_HW_CMD_LOG_EVENT: {
		struct cam_cpas_hw_cmd_notify_event *event;

		if (sizeof(struct cam_cpas_hw_cmd_notify_event) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		event = (struct cam_cpas_hw_cmd_notify_event *)cmd_args;

		rc = cam_cpas_log_event(hw_priv, event->identifier_string,
			event->identifier_value);
		break;
	}

	case CAM_CPAS_HW_CMD_SELECT_QOS: {
		uint32_t *selection_mask;

		if (sizeof(uint32_t) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		selection_mask = (uint32_t *)cmd_args;
		rc = cam_cpas_select_qos(hw_priv, *selection_mask);
		break;
	}
	case CAM_CPAS_HW_CMD_GET_SCID: {
		enum cam_sys_cache_config_types type;

		if (sizeof(enum cam_sys_cache_config_types) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}
		type = *((enum cam_sys_cache_config_types *) cmd_args);
		rc = cam_cpas_get_slice_id(hw_priv, type);
	}
		break;
	case CAM_CPAS_HW_CMD_ACTIVATE_LLC: {
		enum cam_sys_cache_config_types type;

		if (sizeof(enum cam_sys_cache_config_types) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}
		type = *((enum cam_sys_cache_config_types *) cmd_args);
		rc = cam_cpas_activate_cache_slice(hw_priv, type);
	}
		break;
	case CAM_CPAS_HW_CMD_DEACTIVATE_LLC: {
		enum cam_sys_cache_config_types type;

		if (sizeof(enum cam_sys_cache_config_types) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}
		type = *((enum cam_sys_cache_config_types *) cmd_args);
		rc = cam_cpas_deactivate_cache_slice(hw_priv, type);
	}
		break;
	case CAM_CPAS_HW_CMD_CONFIGURE_STALING_LLC: {
		struct cam_sys_cache_local_info sys_cache_info;

		if (sizeof(struct cam_sys_cache_local_info) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}
		sys_cache_info =
			*((struct cam_sys_cache_local_info *) cmd_args);
		rc = cam_cpas_configure_staling_cache_slice(hw_priv, sys_cache_info);
	}
		break;
	case CAM_CPAS_HW_CMD_NOTIF_STALL_INC_LLC: {
		enum cam_sys_cache_config_types type;

		if (sizeof(enum cam_sys_cache_config_types) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}
		type = *((enum cam_sys_cache_config_types *) cmd_args);
		rc = cam_cpas_notif_stalling_inc_cache_slice(hw_priv, type);
	}
		break;
	case CAM_CPAS_HW_CMD_DUMP_BUFF_FILL_INFO: {
		uint32_t *client_handle;

		if (sizeof(uint32_t) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		client_handle = (uint32_t *)cmd_args;
		rc = cam_cpas_hw_dump_camnoc_buff_fill_info(hw_priv,
			*client_handle);
		break;
	}
	case CAM_CPAS_HW_CMD_CSID_INPUT_CORE_INFO_UPDATE: {
		struct cam_cpas_hw_cmd_csid_input_core_info_update *core_info_update;

		if (sizeof(struct cam_cpas_hw_cmd_csid_input_core_info_update) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d", cmd_type, arg_size);
			break;
		}

		core_info_update = (struct cam_cpas_hw_cmd_csid_input_core_info_update *)cmd_args;
		rc = cam_cpas_hw_csid_input_core_info_update(hw_priv, core_info_update->csid_idx,
			core_info_update->sfe_idx, core_info_update->set_port);
		break;
	}
	case CAM_CPAS_HW_CMD_CSID_PROCESS_RESUME: {
		uint32_t *csid_idx;

		if (sizeof(uint32_t) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		csid_idx = (uint32_t *)cmd_args;
		rc = cam_cpas_hw_csid_process_resume(hw_priv, *csid_idx);
		break;
	}
	case CAM_CPAS_HW_CMD_TPG_MUX_SEL: {
		uint32_t *tpg_mux_sel;

		if (sizeof(uint32_t) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		tpg_mux_sel = (uint32_t *)cmd_args;
		rc = cam_cpas_hw_enable_tpg_mux_sel(hw_priv, *tpg_mux_sel);
		break;

	}
	case CAM_CPAS_HW_CMD_ENABLE_DISABLE_DOMAIN_ID_CLK: {
		bool *enable;

		if (sizeof(bool) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		enable = (bool *)cmd_args;
		rc = cam_cpas_hw_enable_domain_id_clks(hw_priv, *enable);
		break;
	}
	case CAM_CPAS_HW_CMD_DUMP_STATE_MONITOR_INFO: {
		struct cam_req_mgr_dump_info *info;

		if (sizeof(struct cam_req_mgr_dump_info) != arg_size) {
			CAM_ERR(CAM_CPAS, "cmd_type %d, size mismatch %d",
				cmd_type, arg_size);
			break;
		}

		info = (struct cam_req_mgr_dump_info *)cmd_args;
		rc = cam_cpas_dump_state_monitor_array_info(hw_priv, info);
		break;
	}

	default:
		CAM_ERR(CAM_CPAS, "CPAS HW command not valid =%d", cmd_type);
		break;
	}

	return rc;
}

static int cam_cpas_util_client_setup(struct cam_hw_info *cpas_hw)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	int i;

	for (i = 0; i < CAM_CPAS_MAX_CLIENTS; i++) {
		mutex_init(&cpas_core->client_mutex[i]);
	}

	return 0;
}

int cam_cpas_util_client_cleanup(struct cam_hw_info *cpas_hw)
{
	struct cam_cpas *cpas_core = (struct cam_cpas *) cpas_hw->core_info;
	int i;

	for (i = 0; i < CAM_CPAS_MAX_CLIENTS; i++) {
		if (cpas_core->cpas_client[i] &&
			cpas_core->cpas_client[i]->registered) {
			cam_cpas_hw_unregister_client(cpas_hw, i);
		}
		kfree(cpas_core->cpas_client[i]);
		cpas_core->cpas_client[i] = NULL;
		mutex_destroy(&cpas_core->client_mutex[i]);
	}

	return 0;
}

static int cam_cpas_util_get_internal_ops(struct platform_device *pdev,
	struct cam_hw_intf *hw_intf, struct cam_cpas_internal_ops *internal_ops)
{
	struct device_node *of_node = pdev->dev.of_node;
	int rc;
	const char *compat_str = NULL;

	rc = of_property_read_string_index(of_node, "arch-compat", 0,
		(const char **)&compat_str);
	if (rc) {
		CAM_ERR(CAM_CPAS, "failed to get arch-compat rc=%d", rc);
		return -EINVAL;
	}

	if (strnstr(compat_str, "camss_top", strlen(compat_str))) {
		hw_intf->hw_type = CAM_HW_CAMSSTOP;
		rc = cam_camsstop_get_internal_ops(internal_ops);
	} else if (strnstr(compat_str, "cpas_top", strlen(compat_str))) {
		hw_intf->hw_type = CAM_HW_CPASTOP;
		rc = cam_cpastop_get_internal_ops(internal_ops);
	} else {
		CAM_ERR(CAM_CPAS, "arch-compat %s not supported", compat_str);
		rc = -EINVAL;
	}

	return rc;
}

static int cam_cpas_util_create_debugfs(struct cam_cpas *cpas_core)
{
	int rc = 0;
	struct dentry *dbgfileptr = NULL;

	if (!cam_debugfs_available())
		return 0;

	rc = cam_debugfs_create_subdir("cpas", &dbgfileptr);
	if (rc) {
		CAM_ERR(CAM_CPAS,"DebugFS could not create directory!");
		rc = -ENOENT;
		goto end;
	}
	/* Store parent inode for cleanup in caller */
	cpas_core->dentry = dbgfileptr;

	debugfs_create_bool("ahb_bus_scaling_disable", 0644,
		cpas_core->dentry, &cpas_core->ahb_bus_scaling_disable);

	debugfs_create_bool("full_state_dump", 0644,
		cpas_core->dentry, &cpas_core->full_state_dump);

	debugfs_create_bool("smart_qos_dump", 0644,
		cpas_core->dentry, &cpas_core->smart_qos_dump);

	debugfs_create_bool("force_hlos_drv", 0644,
		cpas_core->dentry, &cpas_core->force_hlos_drv);

	debugfs_create_bool("force_cesta_sw_client", 0644,
		cpas_core->dentry, &cpas_core->force_cesta_sw_client);

end:
	return rc;
}

static struct cam_hw_info *cam_cpas_kobj_to_cpas_hw(struct kobject *kobj)
{
	return container_of(kobj, struct cam_cpas_kobj_map, base_kobj)->cpas_hw;
}

static ssize_t cam_cpas_sysfs_get_subparts_info(struct kobject *kobj, struct kobj_attribute *attr,
	char *buf)
{
	int len = 0;
	struct cam_hw_info *cpas_hw = cam_cpas_kobj_to_cpas_hw(kobj);
	struct cam_cpas_private_soc *soc_private = NULL;
	struct cam_cpas_sysfs_info *sysfs_info = NULL;

	mutex_lock(&cpas_hw->hw_mutex);
	soc_private = (struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;
	sysfs_info  = &soc_private->sysfs_info;

	len += scnprintf(buf, PAGE_SIZE, "num_ifes: 0x%x, 0x%x\nnum_ife_lites: 0x%x, 0x%x\n"
		"num_sfes: 0x%x, 0x%x\nnum_custom: 0x%x, 0x%x\n",
		sysfs_info->num_ifes[CAM_CPAS_AVAILABLE_NUM_SUBPARTS],
		sysfs_info->num_ifes[CAM_CPAS_FUNCTIONAL_NUM_SUBPARTS],
		sysfs_info->num_ife_lites[CAM_CPAS_AVAILABLE_NUM_SUBPARTS],
		sysfs_info->num_ife_lites[CAM_CPAS_FUNCTIONAL_NUM_SUBPARTS],
		sysfs_info->num_sfes[CAM_CPAS_AVAILABLE_NUM_SUBPARTS],
		sysfs_info->num_sfes[CAM_CPAS_FUNCTIONAL_NUM_SUBPARTS],
		sysfs_info->num_custom[CAM_CPAS_AVAILABLE_NUM_SUBPARTS],
		sysfs_info->num_custom[CAM_CPAS_FUNCTIONAL_NUM_SUBPARTS]);
	/*
	 * subparts_info sysfs string looks like below.
	 * num_ifes: 0x3, 0x3 (If all IFEs are available)/0x2 (If 1 IFE is unavailable)
	 * num_ife_lites: 0x2, 0x2
	 * num_sfes: 0x3, 0x3 (If all SFEs are available)/0x2 (If 1 SFE is unavailable)
	 * num_custom: 0x0, 0x0
	 */

	if (len >= PAGE_SIZE) {
		CAM_ERR(CAM_CPAS, "camera subparts info sysfs string is truncated, len: %d", len);
		mutex_unlock(&cpas_hw->hw_mutex);
		return -EOVERFLOW;
	}

	mutex_unlock(&cpas_hw->hw_mutex);
	return len;
}

static struct kobj_attribute cam_subparts_info_attribute = __ATTR(subparts_info, 0444,
	cam_cpas_sysfs_get_subparts_info, NULL);

static void cam_cpas_hw_kobj_release(struct kobject *kobj)
{
	CAM_DBG(CAM_CPAS, "Release kobj");
	kfree(container_of(kobj, struct cam_cpas_kobj_map, base_kobj));
}

static struct kobj_type kobj_cam_cpas_hw_type = {
	.release = cam_cpas_hw_kobj_release,
	.sysfs_ops = &kobj_sysfs_ops
};

static void cam_cpas_remove_sysfs(struct cam_hw_info *cpas_hw)
{
	struct cam_cpas_private_soc *soc_private = NULL;

	mutex_lock(&cpas_hw->hw_mutex);
	soc_private = (struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;

	sysfs_remove_file(soc_private->sysfs_info.kobj, &cam_subparts_info_attribute.attr);
	kobject_put(soc_private->sysfs_info.kobj);
	mutex_unlock(&cpas_hw->hw_mutex);
}

static int cam_cpas_create_sysfs(struct cam_hw_info *cpas_hw)
{
	int rc = 0;
	struct cam_cpas_kobj_map *kobj_camera = NULL;
	struct cam_cpas_private_soc *soc_private = NULL;

	mutex_lock(&cpas_hw->hw_mutex);
	soc_private = (struct cam_cpas_private_soc *) cpas_hw->soc_info.soc_private;

	kobj_camera = kzalloc(sizeof(*kobj_camera), GFP_KERNEL);
	if (!kobj_camera) {
		CAM_ERR(CAM_CPAS, "failed to allocate memory for kobj_camera");
		mutex_unlock(&cpas_hw->hw_mutex);
		return -ENOMEM;
	}

	kobject_init(&kobj_camera->base_kobj, &kobj_cam_cpas_hw_type);
	kobj_camera->cpas_hw = cpas_hw;
	soc_private->sysfs_info.kobj = &kobj_camera->base_kobj;

	rc = kobject_add(&kobj_camera->base_kobj, kernel_kobj, "%s", "camera");
	if (rc) {
		CAM_ERR(CAM_CPAS, "failed to add camera entry in sysfs");
		goto end;
	}

	/* sysfs file is created in /sys/kernel/camera */
	rc = sysfs_create_file(&kobj_camera->base_kobj, &cam_subparts_info_attribute.attr);
	if (rc) {
		CAM_ERR(CAM_CPAS, "failed to create subparts_info file, rc: %d", rc);
		goto end;
	}

	mutex_unlock(&cpas_hw->hw_mutex);
	return 0;
end:
	kobject_put(&kobj_camera->base_kobj);
	mutex_unlock(&cpas_hw->hw_mutex);
	return rc;
}

int cam_cpas_hw_probe(struct platform_device *pdev,
	struct cam_hw_intf **hw_intf)
{
	int rc = 0;
	int i;
	struct cam_hw_info *cpas_hw = NULL;
	struct cam_hw_intf *cpas_hw_intf = NULL;
	struct cam_cpas *cpas_core = NULL;
	struct cam_cpas_private_soc *soc_private;
	struct cam_cpas_internal_ops *internal_ops;

	cpas_hw_intf = kzalloc(sizeof(struct cam_hw_intf), GFP_KERNEL);
	if (!cpas_hw_intf)
		return -ENOMEM;

	cpas_hw = kzalloc(sizeof(struct cam_hw_info), GFP_KERNEL);
	if (!cpas_hw) {
		kfree(cpas_hw_intf);
		return -ENOMEM;
	}

	cpas_core = kzalloc(sizeof(struct cam_cpas), GFP_KERNEL);
	if (!cpas_core) {
		kfree(cpas_hw);
		kfree(cpas_hw_intf);
		return -ENOMEM;
	}

	for (i = 0; i < CAM_CPAS_REG_MAX; i++)
		cpas_core->regbase_index[i] = -1;

	cpas_hw_intf->hw_priv = cpas_hw;
	cpas_hw->core_info = cpas_core;

	cpas_hw->hw_state = CAM_HW_STATE_POWER_DOWN;
	cpas_hw->soc_info.pdev = pdev;
	cpas_hw->soc_info.dev = &pdev->dev;
	cpas_hw->soc_info.dev_name = pdev->name;
	cpas_hw->open_count = 0;
	cpas_core->ahb_bus_scaling_disable = false;
	cpas_core->full_state_dump = false;
	cpas_core->smart_qos_dump = false;

	atomic64_set(&cpas_core->monitor_head, -1);

	mutex_init(&cpas_hw->hw_mutex);
	spin_lock_init(&cpas_hw->hw_lock);
	init_completion(&cpas_hw->hw_complete);

	cpas_hw_intf->hw_ops.get_hw_caps = cam_cpas_hw_get_hw_info;
	cpas_hw_intf->hw_ops.init = cam_cpas_hw_init;
	cpas_hw_intf->hw_ops.deinit = NULL;
	cpas_hw_intf->hw_ops.reset = NULL;
	cpas_hw_intf->hw_ops.reserve = NULL;
	cpas_hw_intf->hw_ops.release = NULL;
	cpas_hw_intf->hw_ops.start = cam_cpas_hw_start;
	cpas_hw_intf->hw_ops.stop = cam_cpas_hw_stop;
	cpas_hw_intf->hw_ops.read = NULL;
	cpas_hw_intf->hw_ops.write = NULL;
	cpas_hw_intf->hw_ops.process_cmd = cam_cpas_hw_process_cmd;

	cpas_core->work_queue = alloc_workqueue(CAM_CPAS_WORKQUEUE_NAME,
		WQ_UNBOUND | WQ_MEM_RECLAIM, CAM_CPAS_INFLIGHT_WORKS);
	if (!cpas_core->work_queue) {
		rc = -ENOMEM;
		goto release_mem;
	}

	internal_ops = &cpas_core->internal_ops;
	rc = cam_cpas_util_get_internal_ops(pdev, cpas_hw_intf, internal_ops);
	if (rc)
		goto release_workq;

	rc = cam_cpas_soc_init_resources(&cpas_hw->soc_info,
		internal_ops->handle_irq, cpas_hw);
	if (rc)
		goto release_workq;

	soc_private = (struct cam_cpas_private_soc *)
		cpas_hw->soc_info.soc_private;

	rc = cam_cpas_create_sysfs(cpas_hw);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Failed to create sysfs entries, rc: %d", rc);
		goto sysfs_fail;
	}

	cpas_core->num_clients = soc_private->num_clients;
	atomic_set(&cpas_core->soc_access_count, 0);
	init_waitqueue_head(&cpas_core->soc_access_count_wq);

	if (internal_ops->setup_regbase) {
		rc = internal_ops->setup_regbase(&cpas_hw->soc_info,
			cpas_core->regbase_index, CAM_CPAS_REG_MAX);
		if (rc)
			goto deinit_platform_res;
	}

	rc = cam_cpas_util_client_setup(cpas_hw);
	if (rc) {
		CAM_ERR(CAM_CPAS, "failed in client setup, rc=%d", rc);
		goto deinit_platform_res;
	}

	rc = cam_cpas_util_register_bus_client(&cpas_hw->soc_info,
		cpas_hw->soc_info.pdev->dev.of_node,
		&cpas_core->ahb_bus_client);
	if (rc) {
		CAM_ERR(CAM_CPAS, "failed in ahb setup, rc=%d", rc);
		goto client_cleanup;
	}

	rc = cam_cpas_util_axi_setup(cpas_core, &cpas_hw->soc_info);
	if (rc) {
		CAM_ERR(CAM_CPAS, "failed in axi setup, rc=%d", rc);
		goto ahb_cleanup;
	}

	/* Need to vote first before enabling clocks */
	rc = cam_cpas_util_vote_default_ahb_axi(cpas_hw, true);
	if (rc)
		goto axi_cleanup;

	rc = cam_cpas_soc_enable_resources(&cpas_hw->soc_info,
		cpas_hw->soc_info.lowest_clk_level);
	if (rc) {
		CAM_ERR(CAM_CPAS, "failed in soc_enable_resources, rc=%d", rc);
		goto remove_default_vote;
	}

	if (internal_ops->get_hw_info) {
		rc = internal_ops->get_hw_info(cpas_hw, &cpas_core->hw_caps);
		if (rc) {
			CAM_ERR(CAM_CPAS, "failed in get_hw_info, rc=%d", rc);
			goto disable_soc_res;
		}
	} else {
		CAM_ERR(CAM_CPAS, "Invalid get_hw_info");
		goto disable_soc_res;
	}

	rc = cam_cpas_hw_init(cpas_hw_intf->hw_priv,
		&cpas_core->hw_caps, sizeof(struct cam_cpas_hw_caps));
	if (rc)
		goto disable_soc_res;

	cpas_core->cam_subpart_info = &g_cam_cpas_camera_subpart_info;

	rc = cam_get_subpart_info(&soc_private->part_info, CAM_CPAS_CAMERA_INSTANCES);
	if (rc) {
		CAM_ERR(CAM_CPAS, "Failed to get subpart_info, rc = %d", rc);
		goto disable_soc_res;
	}

	rc = cam_cpas_soc_disable_resources(&cpas_hw->soc_info, true, true);
	if (rc) {
		CAM_ERR(CAM_CPAS, "failed in soc_disable_resources, rc=%d", rc);
		goto remove_default_vote;
	}

	rc = cam_cpas_util_vote_default_ahb_axi(cpas_hw, false);
	if (rc)
		goto axi_cleanup;

	rc = cam_cpas_util_create_debugfs(cpas_core);
	if (unlikely(rc))
		CAM_WARN(CAM_CPAS, "failed to create cpas debugfs rc: %d", rc);

	*hw_intf = cpas_hw_intf;
	return 0;

disable_soc_res:
	cam_cpas_soc_disable_resources(&cpas_hw->soc_info, true, true);
remove_default_vote:
	cam_cpas_util_vote_default_ahb_axi(cpas_hw, false);
axi_cleanup:
	cam_cpas_util_axi_cleanup(cpas_core, &cpas_hw->soc_info);
ahb_cleanup:
	cam_cpas_util_unregister_bus_client(&cpas_core->ahb_bus_client);
client_cleanup:
	cam_cpas_util_client_cleanup(cpas_hw);
	cam_cpas_node_tree_cleanup(cpas_core, cpas_hw->soc_info.soc_private);
deinit_platform_res:
	cam_cpas_remove_sysfs(cpas_hw);
sysfs_fail:
	cam_cpas_soc_deinit_resources(&cpas_hw->soc_info);
release_workq:
	flush_workqueue(cpas_core->work_queue);
	destroy_workqueue(cpas_core->work_queue);
release_mem:
	mutex_destroy(&cpas_hw->hw_mutex);
	kfree(cpas_core);
	kfree(cpas_hw);
	kfree(cpas_hw_intf);
	CAM_ERR(CAM_CPAS, "failed in hw probe");
	return rc;
}

int cam_cpas_hw_remove(struct cam_hw_intf *cpas_hw_intf)
{
	struct cam_hw_info *cpas_hw;
	struct cam_cpas *cpas_core;

	if (!cpas_hw_intf) {
		CAM_ERR(CAM_CPAS, "cpas interface not initialized");
		return -EINVAL;
	}

	cpas_hw = (struct cam_hw_info *)cpas_hw_intf->hw_priv;
	cpas_core = (struct cam_cpas *)cpas_hw->core_info;

	if (cpas_hw->hw_state == CAM_HW_STATE_POWER_UP) {
		CAM_ERR(CAM_CPAS, "cpas hw is in power up state");
		return -EINVAL;
	}

	cam_cpas_remove_sysfs(cpas_hw);
	cam_cpas_util_axi_cleanup(cpas_core, &cpas_hw->soc_info);
	cam_cpas_node_tree_cleanup(cpas_core, cpas_hw->soc_info.soc_private);
	cam_cpas_util_unregister_bus_client(&cpas_core->ahb_bus_client);
	cam_cpas_util_client_cleanup(cpas_hw);
	cam_cpas_soc_deinit_resources(&cpas_hw->soc_info);
	cpas_core->dentry = NULL;
	flush_workqueue(cpas_core->work_queue);
	destroy_workqueue(cpas_core->work_queue);
	mutex_destroy(&cpas_hw->hw_mutex);
	kfree(cpas_core);
	kfree(cpas_hw);
	kfree(cpas_hw_intf);

	return 0;
}