drivers/media/platform/msm/camera/cam_sensor_module/cam_ois/cam_ois_core.c - kernel/msm-4.9 - Gitiles

 /* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
  * only version 2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  */

 #include <linux/module.h>
 #include <linux/firmware.h>
 #include <cam_sensor_cmn_header.h>
 #include "cam_ois_core.h"
 #include "cam_ois_soc.h"
 #include "cam_sensor_util.h"
 #include "cam_debug_util.h"
 #include "cam_res_mgr_api.h"

 int32_t cam_ois_construct_default_power_setting(
 	struct cam_sensor_power_ctrl_t *power_info)
 {
 	int rc = 0;

 	power_info->power_setting_size = 1;
 	power_info->power_setting =
 		(struct cam_sensor_power_setting *)
 		kzalloc(sizeof(struct cam_sensor_power_setting),
 			GFP_KERNEL);
 	if (!power_info->power_setting)
 		return -ENOMEM;

 	power_info->power_setting[0].seq_type = SENSOR_VAF;
 	power_info->power_setting[0].seq_val = CAM_VAF;
 	power_info->power_setting[0].config_val = 1;
 	power_info->power_setting[0].delay = 2;

 	power_info->power_down_setting_size = 1;
 	power_info->power_down_setting =
 		(struct cam_sensor_power_setting *)
 		kzalloc(sizeof(struct cam_sensor_power_setting),
 			GFP_KERNEL);
 	if (!power_info->power_down_setting) {
 		rc = -ENOMEM;
 		goto free_power_settings;
 	}

 	power_info->power_down_setting[0].seq_type = SENSOR_VAF;
 	power_info->power_down_setting[0].seq_val = CAM_VAF;
 	power_info->power_down_setting[0].config_val = 0;

 	return rc;

 free_power_settings:
 	kfree(power_info->power_setting);
 	power_info->power_setting = NULL;
 	return rc;
 }


 /**
  * cam_ois_get_dev_handle - get device handle
  * @o_ctrl:     ctrl structure
  * @arg:        Camera control command argument
  *
  * Returns success or failure
  */
 static int cam_ois_get_dev_handle(struct cam_ois_ctrl_t *o_ctrl,
 	void *arg)
 {
 	struct cam_sensor_acquire_dev    ois_acq_dev;
 	struct cam_create_dev_hdl        bridge_params;
 	struct cam_control              *cmd = (struct cam_control *)arg;

 	if (o_ctrl->bridge_intf.device_hdl != -1) {
 		CAM_ERR(CAM_OIS, "Device is already acquired");
 		return -EFAULT;
 	}
 	if (copy_from_user(&ois_acq_dev, (void __user *) cmd->handle,
 		sizeof(ois_acq_dev)))
 		return -EFAULT;

 	bridge_params.session_hdl = ois_acq_dev.session_handle;
 	bridge_params.ops = &o_ctrl->bridge_intf.ops;
 	bridge_params.v4l2_sub_dev_flag = 0;
 	bridge_params.media_entity_flag = 0;
 	bridge_params.priv = o_ctrl;

 	ois_acq_dev.device_handle =
 		cam_create_device_hdl(&bridge_params);
 	o_ctrl->bridge_intf.device_hdl = ois_acq_dev.device_handle;
 	o_ctrl->bridge_intf.session_hdl = ois_acq_dev.session_handle;

 	CAM_DBG(CAM_OIS, "Device Handle: %d", ois_acq_dev.device_handle);
 	if (copy_to_user((void __user *) cmd->handle, &ois_acq_dev,
 		sizeof(struct cam_sensor_acquire_dev))) {
 		CAM_ERR(CAM_OIS, "ACQUIRE_DEV: copy to user failed");
 		return -EFAULT;
 	}
 	return 0;
 }

 static int cam_ois_power_up(struct cam_ois_ctrl_t *o_ctrl)
 {
 	int                             rc = 0;
 	struct cam_hw_soc_info          *soc_info =
 		&o_ctrl->soc_info;
 	struct cam_ois_soc_private *soc_private;
 	struct cam_sensor_power_ctrl_t  *power_info;

 	soc_private =
 		(struct cam_ois_soc_private *)o_ctrl->soc_info.soc_private;
 	power_info = &soc_private->power_info;

 	if ((power_info->power_setting == NULL) &&
 		(power_info->power_down_setting == NULL)) {
 		CAM_INFO(CAM_OIS,
 			"Using default power settings");
 		rc = cam_ois_construct_default_power_setting(power_info);
 		if (rc < 0) {
 			CAM_ERR(CAM_OIS,
 				"Construct default ois power setting failed.");
 			return rc;
 		}
 	}

 	/* Parse and fill vreg params for power up settings */
 	rc = msm_camera_fill_vreg_params(
 		soc_info,
 		power_info->power_setting,
 		power_info->power_setting_size);
 	if (rc) {
 		CAM_ERR(CAM_OIS,
 			"failed to fill vreg params for power up rc:%d", rc);
 		return rc;
 	}

 	/* Parse and fill vreg params for power down settings*/
 	rc = msm_camera_fill_vreg_params(
 		soc_info,
 		power_info->power_down_setting,
 		power_info->power_down_setting_size);
 	if (rc) {
 		CAM_ERR(CAM_OIS,
 			"failed to fill vreg params for power down rc:%d", rc);
 		return rc;
 	}

 	power_info->dev = soc_info->dev;

 	rc = cam_sensor_core_power_up(power_info, soc_info);
 	if (rc) {
 		CAM_ERR(CAM_OIS, "failed in ois power up rc %d", rc);
 		return rc;
 	}

 	rc = camera_io_init(&o_ctrl->io_master_info);
 	if (rc)
 		CAM_ERR(CAM_OIS, "cci_init failed: rc: %d", rc);

 	return rc;
 }

 /**
  * cam_ois_power_down - power down OIS device
  * @o_ctrl:     ctrl structure
  *
  * Returns success or failure
  */
 static int cam_ois_power_down(struct cam_ois_ctrl_t *o_ctrl)
 {
 	int32_t                         rc = 0;
 	struct cam_sensor_power_ctrl_t  *power_info;
 	struct cam_hw_soc_info          *soc_info =
 		&o_ctrl->soc_info;
 	struct cam_ois_soc_private *soc_private;

 	if (!o_ctrl) {
 		CAM_ERR(CAM_OIS, "failed: o_ctrl %pK", o_ctrl);
 		return -EINVAL;
 	}

 	soc_private =
 		(struct cam_ois_soc_private *)o_ctrl->soc_info.soc_private;
 	power_info = &soc_private->power_info;
 	soc_info = &o_ctrl->soc_info;

 	if (!power_info) {
 		CAM_ERR(CAM_OIS, "failed: power_info %pK", power_info);
 		return -EINVAL;
 	}

 	rc = msm_camera_power_down(power_info, soc_info);
 	if (rc) {
 		CAM_ERR(CAM_OIS, "power down the core is failed:%d", rc);
 		return rc;
 	}

 	camera_io_release(&o_ctrl->io_master_info);

 	return rc;
 }

 static int cam_ois_apply_settings(struct cam_ois_ctrl_t *o_ctrl,
 	struct i2c_settings_array *i2c_set)
 {
 	struct i2c_settings_list *i2c_list;
 	int32_t rc = 0;
 	uint32_t i, size;

 	if (o_ctrl == NULL || i2c_set == NULL) {
 		CAM_ERR(CAM_OIS, "Invalid Args");
 		return -EINVAL;
 	}

 	if (i2c_set->is_settings_valid != 1) {
 		CAM_ERR(CAM_OIS, " Invalid settings");
 		return -EINVAL;
 	}

 	list_for_each_entry(i2c_list,
 		&(i2c_set->list_head), list) {
 		if (i2c_list->op_code ==  CAM_SENSOR_I2C_WRITE_RANDOM) {
 			rc = camera_io_dev_write(&(o_ctrl->io_master_info),
 				&(i2c_list->i2c_settings));
 			if (rc < 0) {
 				CAM_ERR(CAM_OIS,
 					"Failed in Applying i2c wrt settings");
 				return rc;
 			}
 		} else if (i2c_list->op_code == CAM_SENSOR_I2C_POLL) {
 			size = i2c_list->i2c_settings.size;
 			for (i = 0; i < size; i++) {
 				rc = camera_io_dev_poll(
 				&(o_ctrl->io_master_info),
 				i2c_list->i2c_settings.reg_setting[i].reg_addr,
 				i2c_list->i2c_settings.reg_setting[i].reg_data,
 				i2c_list->i2c_settings.reg_setting[i].data_mask,
 				i2c_list->i2c_settings.addr_type,
 				i2c_list->i2c_settings.data_type,
 				i2c_list->i2c_settings.reg_setting[i].delay);
 				if (rc < 0) {
 					CAM_ERR(CAM_OIS,
 						"i2c poll apply setting Fail");
 					return rc;
 				}
 			}
 		}
 	}

 	return rc;
 }

 static int cam_ois_slaveInfo_pkt_parser(struct cam_ois_ctrl_t *o_ctrl,
 	uint32_t *cmd_buf)
 {
 	int32_t rc = 0;
 	struct cam_cmd_ois_info *ois_info;

 	if (!o_ctrl || !cmd_buf) {
 		CAM_ERR(CAM_OIS, "Invalid Args");
 		return -EINVAL;
 	}

 	ois_info = (struct cam_cmd_ois_info *)cmd_buf;
 	if (o_ctrl->io_master_info.master_type == CCI_MASTER) {
 		o_ctrl->io_master_info.cci_client->i2c_freq_mode =
 			ois_info->i2c_freq_mode;
 		o_ctrl->io_master_info.cci_client->sid =
 			ois_info->slave_addr >> 1;
 		o_ctrl->ois_fw_flag = ois_info->ois_fw_flag;
 		o_ctrl->is_ois_calib = ois_info->is_ois_calib;
 		memcpy(o_ctrl->ois_name, ois_info->ois_name, 32);
 		o_ctrl->io_master_info.cci_client->retries = 3;
 		o_ctrl->io_master_info.cci_client->id_map = 0;
 		memcpy(&(o_ctrl->opcode), &(ois_info->opcode),
 			sizeof(struct cam_ois_opcode));
 		CAM_DBG(CAM_OIS, "Slave addr: 0x%x Freq Mode: %d",
 			ois_info->slave_addr, ois_info->i2c_freq_mode);
 	} else if (o_ctrl->io_master_info.master_type == I2C_MASTER) {
 		o_ctrl->io_master_info.client->addr = ois_info->slave_addr;
 		CAM_DBG(CAM_OIS, "Slave addr: 0x%x", ois_info->slave_addr);
 	} else {
 		CAM_ERR(CAM_OIS, "Invalid Master type : %d",
 			o_ctrl->io_master_info.master_type);
 		rc = -EINVAL;
 	}

 	return rc;
 }

 static int cam_ois_fw_download(struct cam_ois_ctrl_t *o_ctrl)
 {
 	uint16_t                           total_bytes = 0;
 	uint8_t                           *ptr = NULL;
 	int32_t                            rc = 0, cnt;
 	uint32_t                           fw_size;
 	const struct firmware             *fw = NULL;
 	const char                        *fw_name_prog = NULL;
 	const char                        *fw_name_coeff = NULL;
 	char                               name_prog[32] = {0};
 	char                               name_coeff[32] = {0};
 	struct device                     *dev = &(o_ctrl->pdev->dev);
 	struct cam_sensor_i2c_reg_setting  i2c_reg_setting;
 	struct page                       *page = NULL;

 	if (!o_ctrl) {
 		CAM_ERR(CAM_OIS, "Invalid Args");
 		return -EINVAL;
 	}

 	snprintf(name_coeff, 32, "%s.coeff", o_ctrl->ois_name);

 	snprintf(name_prog, 32, "%s.prog", o_ctrl->ois_name);

 	/* cast pointer as const pointer*/
 	fw_name_prog = name_prog;
 	fw_name_coeff = name_coeff;

 	/* Load FW */
 	rc = request_firmware(&fw, fw_name_prog, dev);
 	if (rc) {
 		CAM_ERR(CAM_OIS, "Failed to locate %s", fw_name_prog);
 		return rc;
 	}

 	total_bytes = fw->size;
 	i2c_reg_setting.addr_type = CAMERA_SENSOR_I2C_TYPE_BYTE;
 	i2c_reg_setting.data_type = CAMERA_SENSOR_I2C_TYPE_BYTE;
 	i2c_reg_setting.size = total_bytes;
 	i2c_reg_setting.delay = 0;
 	fw_size = PAGE_ALIGN(sizeof(struct cam_sensor_i2c_reg_array) *
 		total_bytes) >> PAGE_SHIFT;
 	page = cma_alloc(dev_get_cma_area((o_ctrl->soc_info.dev)),
 		fw_size, 0);
 	if (!page) {
 		CAM_ERR(CAM_OIS, "Failed in allocating i2c_array");
 		release_firmware(fw);
 		return -ENOMEM;
 	}

 	i2c_reg_setting.reg_setting = (struct cam_sensor_i2c_reg_array *)(
 		page_address(page));

 	for (cnt = 0, ptr = (uint8_t *)fw->data; cnt < total_bytes;
 		cnt++, ptr++) {
 		i2c_reg_setting.reg_setting[cnt].reg_addr =
 			o_ctrl->opcode.prog;
 		i2c_reg_setting.reg_setting[cnt].reg_data = *ptr;
 		i2c_reg_setting.reg_setting[cnt].delay = 0;
 		i2c_reg_setting.reg_setting[cnt].data_mask = 0;
 	}

 	rc = camera_io_dev_write_continuous(&(o_ctrl->io_master_info),
 		&i2c_reg_setting, 1);
 	if (rc < 0) {
 		CAM_ERR(CAM_OIS, "OIS FW download failed %d", rc);
 		goto release_firmware;
 	}
 	cma_release(dev_get_cma_area((o_ctrl->soc_info.dev)),
 		page, fw_size);
 	page = NULL;
 	fw_size = 0;
 	release_firmware(fw);

 	rc = request_firmware(&fw, fw_name_coeff, dev);
 	if (rc) {
 		CAM_ERR(CAM_OIS, "Failed to locate %s", fw_name_coeff);
 		return rc;
 	}

 	total_bytes = fw->size;
 	i2c_reg_setting.addr_type = CAMERA_SENSOR_I2C_TYPE_BYTE;
 	i2c_reg_setting.data_type = CAMERA_SENSOR_I2C_TYPE_BYTE;
 	i2c_reg_setting.size = total_bytes;
 	i2c_reg_setting.delay = 0;
 	fw_size = PAGE_ALIGN(sizeof(struct cam_sensor_i2c_reg_array) *
 		total_bytes) >> PAGE_SHIFT;
 	page = cma_alloc(dev_get_cma_area((o_ctrl->soc_info.dev)),
 		fw_size, 0);
 	if (!page) {
 		CAM_ERR(CAM_OIS, "Failed in allocating i2c_array");
 		release_firmware(fw);
 		return -ENOMEM;
 	}

 	i2c_reg_setting.reg_setting = (struct cam_sensor_i2c_reg_array *)(
 		page_address(page));

 	for (cnt = 0, ptr = (uint8_t *)fw->data; cnt < total_bytes;
 		cnt++, ptr++) {
 		i2c_reg_setting.reg_setting[cnt].reg_addr =
 			o_ctrl->opcode.coeff;
 		i2c_reg_setting.reg_setting[cnt].reg_data = *ptr;
 		i2c_reg_setting.reg_setting[cnt].delay = 0;
 		i2c_reg_setting.reg_setting[cnt].data_mask = 0;
 	}

 	rc = camera_io_dev_write_continuous(&(o_ctrl->io_master_info),
 		&i2c_reg_setting, 1);
 	if (rc < 0)
 		CAM_ERR(CAM_OIS, "OIS FW download failed %d", rc);

 release_firmware:
 	cma_release(dev_get_cma_area((o_ctrl->soc_info.dev)),
 		page, fw_size);
 	release_firmware(fw);

 	return rc;
 }

 /**
  * cam_ois_pkt_parse - Parse csl packet
  * @o_ctrl:     ctrl structure
  * @arg:        Camera control command argument
  *
  * Returns success or failure
  */
 static int cam_ois_pkt_parse(struct cam_ois_ctrl_t *o_ctrl, void *arg)
 {
 	int32_t                         rc = 0;
 	int32_t                         i = 0;
 	uint32_t                        total_cmd_buf_in_bytes = 0;
 	struct common_header           *cmm_hdr = NULL;
 	uint64_t                        generic_ptr;
 	struct cam_control             *ioctl_ctrl = NULL;
 	struct cam_config_dev_cmd       dev_config;
 	struct i2c_settings_array      *i2c_reg_settings = NULL;
 	struct cam_cmd_buf_desc        *cmd_desc = NULL;
 	uint64_t                        generic_pkt_addr;
 	size_t                          pkt_len;
 	struct cam_packet              *csl_packet = NULL;
 	size_t                          len_of_buff = 0;
 	uint32_t                       *offset = NULL, *cmd_buf;
 	struct cam_ois_soc_private     *soc_private =
 		(struct cam_ois_soc_private *)o_ctrl->soc_info.soc_private;
 	struct cam_sensor_power_ctrl_t  *power_info = &soc_private->power_info;

 	ioctl_ctrl = (struct cam_control *)arg;
 	if (copy_from_user(&dev_config, (void __user *) ioctl_ctrl->handle,
 		sizeof(dev_config)))
 		return -EFAULT;
 	rc = cam_mem_get_cpu_buf(dev_config.packet_handle,
 		(uint64_t *)&generic_pkt_addr, &pkt_len);
 	if (rc) {
 		CAM_ERR(CAM_OIS,
 			"error in converting command Handle Error: %d", rc);
 		return rc;
 	}

 	if (dev_config.offset > pkt_len) {
 		CAM_ERR(CAM_OIS,
 			"offset is out of bound: off: %lld len: %zu",
 			dev_config.offset, pkt_len);
 		return -EINVAL;
 	}

 	csl_packet = (struct cam_packet *)
 		(generic_pkt_addr + dev_config.offset);
 	switch (csl_packet->header.op_code & 0xFFFFFF) {
 	case CAM_OIS_PACKET_OPCODE_INIT:
 		offset = (uint32_t *)&csl_packet->payload;
 		offset += (csl_packet->cmd_buf_offset / sizeof(uint32_t));
 		cmd_desc = (struct cam_cmd_buf_desc *)(offset);

 		/* Loop through multiple command buffers */
 		for (i = 0; i < csl_packet->num_cmd_buf; i++) {
 			total_cmd_buf_in_bytes = cmd_desc[i].length;
 			if (!total_cmd_buf_in_bytes)
 				continue;

 			rc = cam_mem_get_cpu_buf(cmd_desc[i].mem_handle,
 				(uint64_t *)&generic_ptr, &len_of_buff);
 			if (rc < 0) {
 				CAM_ERR(CAM_OIS, "Failed to get cpu buf");
 				return rc;
 			}
 			cmd_buf = (uint32_t *)generic_ptr;
 			if (!cmd_buf) {
 				CAM_ERR(CAM_OIS, "invalid cmd buf");
 				return -EINVAL;
 			}
 			cmd_buf += cmd_desc[i].offset / sizeof(uint32_t);
 			cmm_hdr = (struct common_header *)cmd_buf;

 			switch (cmm_hdr->cmd_type) {
 			case CAMERA_SENSOR_CMD_TYPE_I2C_INFO:
 				rc = cam_ois_slaveInfo_pkt_parser(
 					o_ctrl, cmd_buf);
 				if (rc < 0) {
 					CAM_ERR(CAM_OIS,
 					"Failed in parsing slave info");
 					return rc;
 				}
 				break;
 			case CAMERA_SENSOR_CMD_TYPE_PWR_UP:
 			case CAMERA_SENSOR_CMD_TYPE_PWR_DOWN:
 				CAM_DBG(CAM_OIS,
 					"Received power settings buffer");
 				rc = cam_sensor_update_power_settings(
 					cmd_buf,
 					total_cmd_buf_in_bytes,
 					power_info);
 				if (rc) {
 					CAM_ERR(CAM_OIS,
 					"Failed: parse power settings");
 					return rc;
 				}
 				break;
 			default:
 			if (o_ctrl->i2c_init_data.is_settings_valid == 0) {
 				CAM_DBG(CAM_OIS,
 				"Received init settings");
 				i2c_reg_settings =
 					&(o_ctrl->i2c_init_data);
 				i2c_reg_settings->is_settings_valid = 1;
 				i2c_reg_settings->request_id = 0;
 				rc = cam_sensor_i2c_command_parser(
 					&o_ctrl->io_master_info,
 					i2c_reg_settings,
 					&cmd_desc[i], 1);
 				if (rc < 0) {
 					CAM_ERR(CAM_OIS,
 					"init parsing failed: %d", rc);
 					return rc;
 				}
 			} else if ((o_ctrl->is_ois_calib != 0) &&
 				(o_ctrl->i2c_calib_data.is_settings_valid ==
 				0)) {
 				CAM_DBG(CAM_OIS,
 					"Received calib settings");
 				i2c_reg_settings = &(o_ctrl->i2c_calib_data);
 				i2c_reg_settings->is_settings_valid = 1;
 				i2c_reg_settings->request_id = 0;
 				rc = cam_sensor_i2c_command_parser(
 					&o_ctrl->io_master_info,
 					i2c_reg_settings,
 					&cmd_desc[i], 1);
 				if (rc < 0) {
 					CAM_ERR(CAM_OIS,
 						"Calib parsing failed: %d", rc);
 					return rc;
 				}
 			}
 			break;
 			}
 		}

 		if (o_ctrl->cam_ois_state != CAM_OIS_CONFIG) {
 			rc = cam_ois_power_up(o_ctrl);
 			if (rc) {
 				CAM_ERR(CAM_OIS, " OIS Power up failed");
 				return rc;
 			}
 			o_ctrl->cam_ois_state = CAM_OIS_CONFIG;
 		}

 		if (o_ctrl->ois_fw_flag) {
 			rc = cam_ois_fw_download(o_ctrl);
 			if (rc) {
 				CAM_ERR(CAM_OIS, "Failed OIS FW Download");
 				goto pwr_dwn;
 			}
 		}

 		rc = cam_ois_apply_settings(o_ctrl, &o_ctrl->i2c_init_data);
 		if (rc < 0) {
 			CAM_ERR(CAM_OIS, "Cannot apply Init settings");
 			goto pwr_dwn;
 		}

 		if (o_ctrl->is_ois_calib) {
 			rc = cam_ois_apply_settings(o_ctrl,
 				&o_ctrl->i2c_calib_data);
 			if (rc) {
 				CAM_ERR(CAM_OIS, "Cannot apply calib data");
 				goto pwr_dwn;
 			}
 		}

 		rc = delete_request(&o_ctrl->i2c_init_data);
 		if (rc < 0) {
 			CAM_WARN(CAM_OIS,
 				"Fail deleting Init data: rc: %d", rc);
 			rc = 0;
 		}
 		rc = delete_request(&o_ctrl->i2c_calib_data);
 		if (rc < 0) {
 			CAM_WARN(CAM_OIS,
 				"Fail deleting Calibration data: rc: %d", rc);
 			rc = 0;
 		}
 		break;
 	case CAM_OIS_PACKET_OPCODE_OIS_CONTROL:
 		if (o_ctrl->cam_ois_state < CAM_OIS_CONFIG) {
 			rc = -EINVAL;
 			CAM_WARN(CAM_OIS,
 				"Not in right state to control OIS: %d",
 				o_ctrl->cam_ois_state);
 			return rc;
 		}
 		offset = (uint32_t *)&csl_packet->payload;
 		offset += (csl_packet->cmd_buf_offset / sizeof(uint32_t));
 		cmd_desc = (struct cam_cmd_buf_desc *)(offset);
 		i2c_reg_settings = &(o_ctrl->i2c_mode_data);
 		i2c_reg_settings->is_settings_valid = 1;
 		i2c_reg_settings->request_id = 0;
 		rc = cam_sensor_i2c_command_parser(&o_ctrl->io_master_info,
 			i2c_reg_settings,
 			cmd_desc, 1);
 		if (rc < 0) {
 			CAM_ERR(CAM_OIS, "OIS pkt parsing failed: %d", rc);
 			return rc;
 		}

 		rc = cam_ois_apply_settings(o_ctrl, i2c_reg_settings);
 		if (rc < 0) {
 			CAM_ERR(CAM_OIS, "Cannot apply mode settings");
 			return rc;
 		}

 		rc = delete_request(i2c_reg_settings);
 		if (rc < 0)
 			CAM_ERR(CAM_OIS,
 				"Fail deleting Mode data: rc: %d", rc);
 		break;
 	default:
 		break;
 	}
 	return rc;
 pwr_dwn:
 	cam_ois_power_down(o_ctrl);
 	return rc;
 }

 void cam_ois_shutdown(struct cam_ois_ctrl_t *o_ctrl)
 {
 	int rc = 0;
 	struct cam_ois_soc_private  *soc_private =
 		(struct cam_ois_soc_private *)o_ctrl->soc_info.soc_private;
 	struct cam_sensor_power_ctrl_t *power_info =
 		&soc_private->power_info;

 	if (o_ctrl->cam_ois_state == CAM_OIS_INIT)
 		return;

 	if (o_ctrl->cam_ois_state >= CAM_OIS_CONFIG) {
 		rc = cam_ois_power_down(o_ctrl);
 		if (rc < 0)
 			CAM_ERR(CAM_OIS, "OIS Power down failed");
 		o_ctrl->cam_ois_state = CAM_OIS_ACQUIRE;
 	}

 	if (o_ctrl->cam_ois_state >= CAM_OIS_ACQUIRE) {
 		rc = cam_destroy_device_hdl(o_ctrl->bridge_intf.device_hdl);
 		if (rc < 0)
 			CAM_ERR(CAM_OIS, "destroying the device hdl");
 		o_ctrl->bridge_intf.device_hdl = -1;
 		o_ctrl->bridge_intf.link_hdl = -1;
 		o_ctrl->bridge_intf.session_hdl = -1;
 	}

 	kfree(power_info->power_setting);
 	kfree(power_info->power_down_setting);
 	power_info->power_setting = NULL;
 	power_info->power_down_setting = NULL;

 	o_ctrl->cam_ois_state = CAM_OIS_INIT;
 }

 /**
  * cam_ois_driver_cmd - Handle ois cmds
  * @e_ctrl:     ctrl structure
  * @arg:        Camera control command argument
  *
  * Returns success or failure
  */
 int cam_ois_driver_cmd(struct cam_ois_ctrl_t *o_ctrl, void *arg)
 {
 	int                            rc = 0;
 	struct cam_ois_query_cap_t     ois_cap = {0};
 	struct cam_control            *cmd = (struct cam_control *)arg;

 	if (!o_ctrl || !arg) {
 		CAM_ERR(CAM_OIS, "Invalid arguments");
 		return -EINVAL;
 	}

 	if (cmd->handle_type != CAM_HANDLE_USER_POINTER) {
 		CAM_ERR(CAM_OIS, "Invalid handle type: %d",
 			cmd->handle_type);
 		return -EINVAL;
 	}

 	mutex_lock(&(o_ctrl->ois_mutex));
 	switch (cmd->op_code) {
 	case CAM_QUERY_CAP:
 		ois_cap.slot_info = o_ctrl->soc_info.index;

 		if (copy_to_user((void __user *) cmd->handle,
 			&ois_cap,
 			sizeof(struct cam_ois_query_cap_t))) {
 			CAM_ERR(CAM_OIS, "Failed Copy to User");
 			rc = -EFAULT;
 			goto release_mutex;
 		}
 		CAM_DBG(CAM_OIS, "ois_cap: ID: %d", ois_cap.slot_info);
 		break;
 	case CAM_ACQUIRE_DEV:
 		rc = cam_ois_get_dev_handle(o_ctrl, arg);
 		if (rc) {
 			CAM_ERR(CAM_OIS, "Failed to acquire dev");
 			goto release_mutex;
 		}

 		o_ctrl->cam_ois_state = CAM_OIS_ACQUIRE;
 		break;
 	case CAM_START_DEV:
 		if (o_ctrl->cam_ois_state != CAM_OIS_CONFIG) {
 			rc = -EINVAL;
 			CAM_WARN(CAM_OIS,
 			"Not in right state for start : %d",
 			o_ctrl->cam_ois_state);
 			goto release_mutex;
 		}
 		o_ctrl->cam_ois_state = CAM_OIS_START;
 		break;
 	case CAM_CONFIG_DEV:
 		rc = cam_ois_pkt_parse(o_ctrl, arg);
 		if (rc) {
 			CAM_ERR(CAM_OIS, "Failed in ois pkt Parsing");
 			goto release_mutex;
 		}
 		break;
 	case CAM_RELEASE_DEV:
 		if (o_ctrl->cam_ois_state == CAM_OIS_START) {
 			rc = -EINVAL;
 			CAM_WARN(CAM_OIS,
 				"Cant release ois: in start state");
 			goto release_mutex;
 		}

 		if (o_ctrl->cam_ois_state == CAM_OIS_CONFIG) {
 			rc = cam_ois_power_down(o_ctrl);
 			if (rc < 0) {
 				CAM_ERR(CAM_OIS, "OIS Power down failed");
 				goto release_mutex;
 			}
 		}

 		if (o_ctrl->bridge_intf.device_hdl == -1) {
 			CAM_ERR(CAM_OIS, "link hdl: %d device hdl: %d",
 				o_ctrl->bridge_intf.device_hdl,
 				o_ctrl->bridge_intf.link_hdl);
 			rc = -EINVAL;
 			goto release_mutex;
 		}
 		rc = cam_destroy_device_hdl(o_ctrl->bridge_intf.device_hdl);
 		if (rc < 0)
 			CAM_ERR(CAM_OIS, "destroying the device hdl");
 		o_ctrl->bridge_intf.device_hdl = -1;
 		o_ctrl->bridge_intf.link_hdl = -1;
 		o_ctrl->bridge_intf.session_hdl = -1;
 		o_ctrl->cam_ois_state = CAM_OIS_INIT;
 		break;
 	case CAM_STOP_DEV:
 		if (o_ctrl->cam_ois_state != CAM_OIS_START) {
 			rc = -EINVAL;
 			CAM_WARN(CAM_OIS,
 			"Not in right state for stop : %d",
 			o_ctrl->cam_ois_state);
 		}
 		o_ctrl->cam_ois_state = CAM_OIS_CONFIG;
 		break;
 	default:
 		CAM_ERR(CAM_OIS, "invalid opcode");
 		goto release_mutex;
 	}
 release_mutex:
 	mutex_unlock(&(o_ctrl->ois_mutex));
 	return rc;
 }
	/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 and
	* only version 2 as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*/

	#include <linux/module.h>
	#include <linux/firmware.h>
	#include <cam_sensor_cmn_header.h>
	#include "cam_ois_core.h"
	#include "cam_ois_soc.h"
	#include "cam_sensor_util.h"
	#include "cam_debug_util.h"
	#include "cam_res_mgr_api.h"

	int32_t cam_ois_construct_default_power_setting(
	struct cam_sensor_power_ctrl_t *power_info)
	{
	int rc = 0;

	power_info->power_setting_size = 1;
	power_info->power_setting =
	(struct cam_sensor_power_setting *)
	kzalloc(sizeof(struct cam_sensor_power_setting),
	GFP_KERNEL);
	if (!power_info->power_setting)
	return -ENOMEM;

	power_info->power_setting[0].seq_type = SENSOR_VAF;
	power_info->power_setting[0].seq_val = CAM_VAF;
	power_info->power_setting[0].config_val = 1;
	power_info->power_setting[0].delay = 2;

	power_info->power_down_setting_size = 1;
	power_info->power_down_setting =
	(struct cam_sensor_power_setting *)
	kzalloc(sizeof(struct cam_sensor_power_setting),
	GFP_KERNEL);
	if (!power_info->power_down_setting) {
	rc = -ENOMEM;
	goto free_power_settings;
	}

	power_info->power_down_setting[0].seq_type = SENSOR_VAF;
	power_info->power_down_setting[0].seq_val = CAM_VAF;
	power_info->power_down_setting[0].config_val = 0;

	return rc;

	free_power_settings:
	kfree(power_info->power_setting);
	power_info->power_setting = NULL;
	return rc;
	}


	/**
	* cam_ois_get_dev_handle - get device handle
	* @o_ctrl: ctrl structure
	* @arg: Camera control command argument
	*
	* Returns success or failure
	*/
	static int cam_ois_get_dev_handle(struct cam_ois_ctrl_t *o_ctrl,
	void *arg)
	{
	struct cam_sensor_acquire_dev ois_acq_dev;
	struct cam_create_dev_hdl bridge_params;
	struct cam_control cmd = (struct cam_control )arg;

	if (o_ctrl->bridge_intf.device_hdl != -1) {
	CAM_ERR(CAM_OIS, "Device is already acquired");
	return -EFAULT;
	}
	if (copy_from_user(&ois_acq_dev, (void __user *) cmd->handle,
	sizeof(ois_acq_dev)))
	return -EFAULT;

	bridge_params.session_hdl = ois_acq_dev.session_handle;
	bridge_params.ops = &o_ctrl->bridge_intf.ops;
	bridge_params.v4l2_sub_dev_flag = 0;
	bridge_params.media_entity_flag = 0;
	bridge_params.priv = o_ctrl;

	ois_acq_dev.device_handle =
	cam_create_device_hdl(&bridge_params);
	o_ctrl->bridge_intf.device_hdl = ois_acq_dev.device_handle;
	o_ctrl->bridge_intf.session_hdl = ois_acq_dev.session_handle;

	CAM_DBG(CAM_OIS, "Device Handle: %d", ois_acq_dev.device_handle);
	if (copy_to_user((void __user *) cmd->handle, &ois_acq_dev,
	sizeof(struct cam_sensor_acquire_dev))) {
	CAM_ERR(CAM_OIS, "ACQUIRE_DEV: copy to user failed");
	return -EFAULT;
	}
	return 0;
	}

	static int cam_ois_power_up(struct cam_ois_ctrl_t *o_ctrl)
	{
	int rc = 0;
	struct cam_hw_soc_info *soc_info =
	&o_ctrl->soc_info;
	struct cam_ois_soc_private *soc_private;
	struct cam_sensor_power_ctrl_t *power_info;

	soc_private =
	(struct cam_ois_soc_private *)o_ctrl->soc_info.soc_private;
	power_info = &soc_private->power_info;

	if ((power_info->power_setting == NULL) &&
	(power_info->power_down_setting == NULL)) {
	CAM_INFO(CAM_OIS,
	"Using default power settings");
	rc = cam_ois_construct_default_power_setting(power_info);
	if (rc < 0) {
	CAM_ERR(CAM_OIS,
	"Construct default ois power setting failed.");
	return rc;
	}
	}

	/* Parse and fill vreg params for power up settings */
	rc = msm_camera_fill_vreg_params(
	soc_info,
	power_info->power_setting,
	power_info->power_setting_size);
	if (rc) {
	CAM_ERR(CAM_OIS,
	"failed to fill vreg params for power up rc:%d", rc);
	return rc;
	}

	/* Parse and fill vreg params for power down settings*/
	rc = msm_camera_fill_vreg_params(
	soc_info,
	power_info->power_down_setting,
	power_info->power_down_setting_size);
	if (rc) {
	CAM_ERR(CAM_OIS,
	"failed to fill vreg params for power down rc:%d", rc);
	return rc;
	}

	power_info->dev = soc_info->dev;

	rc = cam_sensor_core_power_up(power_info, soc_info);
	if (rc) {
	CAM_ERR(CAM_OIS, "failed in ois power up rc %d", rc);
	return rc;
	}

	rc = camera_io_init(&o_ctrl->io_master_info);
	if (rc)
	CAM_ERR(CAM_OIS, "cci_init failed: rc: %d", rc);

	return rc;
	}

	/**
	* cam_ois_power_down - power down OIS device
	* @o_ctrl: ctrl structure
	*
	* Returns success or failure
	*/
	static int cam_ois_power_down(struct cam_ois_ctrl_t *o_ctrl)
	{
	int32_t rc = 0;
	struct cam_sensor_power_ctrl_t *power_info;
	struct cam_hw_soc_info *soc_info =
	&o_ctrl->soc_info;
	struct cam_ois_soc_private *soc_private;

	if (!o_ctrl) {
	CAM_ERR(CAM_OIS, "failed: o_ctrl %pK", o_ctrl);
	return -EINVAL;
	}

	soc_private =
	(struct cam_ois_soc_private *)o_ctrl->soc_info.soc_private;
	power_info = &soc_private->power_info;
	soc_info = &o_ctrl->soc_info;

	if (!power_info) {
	CAM_ERR(CAM_OIS, "failed: power_info %pK", power_info);
	return -EINVAL;
	}

	rc = msm_camera_power_down(power_info, soc_info);
	if (rc) {
	CAM_ERR(CAM_OIS, "power down the core is failed:%d", rc);
	return rc;
	}

	camera_io_release(&o_ctrl->io_master_info);

	return rc;
	}

	static int cam_ois_apply_settings(struct cam_ois_ctrl_t *o_ctrl,
	struct i2c_settings_array *i2c_set)
	{
	struct i2c_settings_list *i2c_list;
	int32_t rc = 0;
	uint32_t i, size;

	if (o_ctrl == NULL \|\| i2c_set == NULL) {
	CAM_ERR(CAM_OIS, "Invalid Args");
	return -EINVAL;
	}

	if (i2c_set->is_settings_valid != 1) {
	CAM_ERR(CAM_OIS, " Invalid settings");
	return -EINVAL;
	}

	list_for_each_entry(i2c_list,
	&(i2c_set->list_head), list) {
	if (i2c_list->op_code == CAM_SENSOR_I2C_WRITE_RANDOM) {
	rc = camera_io_dev_write(&(o_ctrl->io_master_info),
	&(i2c_list->i2c_settings));
	if (rc < 0) {
	CAM_ERR(CAM_OIS,
	"Failed in Applying i2c wrt settings");
	return rc;
	}
	} else if (i2c_list->op_code == CAM_SENSOR_I2C_POLL) {
	size = i2c_list->i2c_settings.size;
	for (i = 0; i < size; i++) {
	rc = camera_io_dev_poll(
	&(o_ctrl->io_master_info),
	i2c_list->i2c_settings.reg_setting[i].reg_addr,
	i2c_list->i2c_settings.reg_setting[i].reg_data,
	i2c_list->i2c_settings.reg_setting[i].data_mask,
	i2c_list->i2c_settings.addr_type,
	i2c_list->i2c_settings.data_type,
	i2c_list->i2c_settings.reg_setting[i].delay);
	if (rc < 0) {
	CAM_ERR(CAM_OIS,
	"i2c poll apply setting Fail");
	return rc;
	}
	}
	}
	}

	return rc;
	}

	static int cam_ois_slaveInfo_pkt_parser(struct cam_ois_ctrl_t *o_ctrl,
	uint32_t *cmd_buf)
	{
	int32_t rc = 0;
	struct cam_cmd_ois_info *ois_info;

	if (!o_ctrl \|\| !cmd_buf) {
	CAM_ERR(CAM_OIS, "Invalid Args");
	return -EINVAL;
	}

	ois_info = (struct cam_cmd_ois_info *)cmd_buf;
	if (o_ctrl->io_master_info.master_type == CCI_MASTER) {
	o_ctrl->io_master_info.cci_client->i2c_freq_mode =
	ois_info->i2c_freq_mode;
	o_ctrl->io_master_info.cci_client->sid =
	ois_info->slave_addr >> 1;
	o_ctrl->ois_fw_flag = ois_info->ois_fw_flag;
	o_ctrl->is_ois_calib = ois_info->is_ois_calib;
	memcpy(o_ctrl->ois_name, ois_info->ois_name, 32);
	o_ctrl->io_master_info.cci_client->retries = 3;
	o_ctrl->io_master_info.cci_client->id_map = 0;
	memcpy(&(o_ctrl->opcode), &(ois_info->opcode),
	sizeof(struct cam_ois_opcode));
	CAM_DBG(CAM_OIS, "Slave addr: 0x%x Freq Mode: %d",
	ois_info->slave_addr, ois_info->i2c_freq_mode);
	} else if (o_ctrl->io_master_info.master_type == I2C_MASTER) {
	o_ctrl->io_master_info.client->addr = ois_info->slave_addr;
	CAM_DBG(CAM_OIS, "Slave addr: 0x%x", ois_info->slave_addr);
	} else {
	CAM_ERR(CAM_OIS, "Invalid Master type : %d",
	o_ctrl->io_master_info.master_type);
	rc = -EINVAL;
	}

	return rc;
	}

	static int cam_ois_fw_download(struct cam_ois_ctrl_t *o_ctrl)
	{
	uint16_t total_bytes = 0;
	uint8_t *ptr = NULL;
	int32_t rc = 0, cnt;
	uint32_t fw_size;
	const struct firmware *fw = NULL;
	const char *fw_name_prog = NULL;
	const char *fw_name_coeff = NULL;
	char name_prog[32] = {0};
	char name_coeff[32] = {0};
	struct device *dev = &(o_ctrl->pdev->dev);
	struct cam_sensor_i2c_reg_setting i2c_reg_setting;
	struct page *page = NULL;

	if (!o_ctrl) {
	CAM_ERR(CAM_OIS, "Invalid Args");
	return -EINVAL;
	}

	snprintf(name_coeff, 32, "%s.coeff", o_ctrl->ois_name);

	snprintf(name_prog, 32, "%s.prog", o_ctrl->ois_name);

	/* cast pointer as const pointer*/
	fw_name_prog = name_prog;
	fw_name_coeff = name_coeff;

	/* Load FW */
	rc = request_firmware(&fw, fw_name_prog, dev);
	if (rc) {
	CAM_ERR(CAM_OIS, "Failed to locate %s", fw_name_prog);
	return rc;
	}

	total_bytes = fw->size;
	i2c_reg_setting.addr_type = CAMERA_SENSOR_I2C_TYPE_BYTE;
	i2c_reg_setting.data_type = CAMERA_SENSOR_I2C_TYPE_BYTE;
	i2c_reg_setting.size = total_bytes;
	i2c_reg_setting.delay = 0;
	fw_size = PAGE_ALIGN(sizeof(struct cam_sensor_i2c_reg_array) *
	total_bytes) >> PAGE_SHIFT;
	page = cma_alloc(dev_get_cma_area((o_ctrl->soc_info.dev)),
	fw_size, 0);
	if (!page) {
	CAM_ERR(CAM_OIS, "Failed in allocating i2c_array");
	release_firmware(fw);
	return -ENOMEM;
	}

	i2c_reg_setting.reg_setting = (struct cam_sensor_i2c_reg_array *)(
	page_address(page));

	for (cnt = 0, ptr = (uint8_t *)fw->data; cnt < total_bytes;
	cnt++, ptr++) {
	i2c_reg_setting.reg_setting[cnt].reg_addr =
	o_ctrl->opcode.prog;
	i2c_reg_setting.reg_setting[cnt].reg_data = *ptr;
	i2c_reg_setting.reg_setting[cnt].delay = 0;
	i2c_reg_setting.reg_setting[cnt].data_mask = 0;
	}

	rc = camera_io_dev_write_continuous(&(o_ctrl->io_master_info),
	&i2c_reg_setting, 1);
	if (rc < 0) {
	CAM_ERR(CAM_OIS, "OIS FW download failed %d", rc);
	goto release_firmware;
	}
	cma_release(dev_get_cma_area((o_ctrl->soc_info.dev)),
	page, fw_size);
	page = NULL;
	fw_size = 0;
	release_firmware(fw);

	rc = request_firmware(&fw, fw_name_coeff, dev);
	if (rc) {
	CAM_ERR(CAM_OIS, "Failed to locate %s", fw_name_coeff);
	return rc;
	}

	total_bytes = fw->size;
	i2c_reg_setting.addr_type = CAMERA_SENSOR_I2C_TYPE_BYTE;
	i2c_reg_setting.data_type = CAMERA_SENSOR_I2C_TYPE_BYTE;
	i2c_reg_setting.size = total_bytes;
	i2c_reg_setting.delay = 0;
	fw_size = PAGE_ALIGN(sizeof(struct cam_sensor_i2c_reg_array) *
	total_bytes) >> PAGE_SHIFT;
	page = cma_alloc(dev_get_cma_area((o_ctrl->soc_info.dev)),
	fw_size, 0);
	if (!page) {
	CAM_ERR(CAM_OIS, "Failed in allocating i2c_array");
	release_firmware(fw);
	return -ENOMEM;
	}

	i2c_reg_setting.reg_setting = (struct cam_sensor_i2c_reg_array *)(
	page_address(page));

	for (cnt = 0, ptr = (uint8_t *)fw->data; cnt < total_bytes;
	cnt++, ptr++) {
	i2c_reg_setting.reg_setting[cnt].reg_addr =
	o_ctrl->opcode.coeff;
	i2c_reg_setting.reg_setting[cnt].reg_data = *ptr;
	i2c_reg_setting.reg_setting[cnt].delay = 0;
	i2c_reg_setting.reg_setting[cnt].data_mask = 0;
	}

	rc = camera_io_dev_write_continuous(&(o_ctrl->io_master_info),
	&i2c_reg_setting, 1);
	if (rc < 0)
	CAM_ERR(CAM_OIS, "OIS FW download failed %d", rc);

	release_firmware:
	cma_release(dev_get_cma_area((o_ctrl->soc_info.dev)),
	page, fw_size);
	release_firmware(fw);

	return rc;
	}

	/**
	* cam_ois_pkt_parse - Parse csl packet
	* @o_ctrl: ctrl structure
	* @arg: Camera control command argument
	*
	* Returns success or failure
	*/
	static int cam_ois_pkt_parse(struct cam_ois_ctrl_t o_ctrl, void arg)
	{
	int32_t rc = 0;
	int32_t i = 0;
	uint32_t total_cmd_buf_in_bytes = 0;
	struct common_header *cmm_hdr = NULL;
	uint64_t generic_ptr;
	struct cam_control *ioctl_ctrl = NULL;
	struct cam_config_dev_cmd dev_config;
	struct i2c_settings_array *i2c_reg_settings = NULL;
	struct cam_cmd_buf_desc *cmd_desc = NULL;
	uint64_t generic_pkt_addr;
	size_t pkt_len;
	struct cam_packet *csl_packet = NULL;
	size_t len_of_buff = 0;
	uint32_t offset = NULL, cmd_buf;
	struct cam_ois_soc_private *soc_private =
	(struct cam_ois_soc_private *)o_ctrl->soc_info.soc_private;
	struct cam_sensor_power_ctrl_t *power_info = &soc_private->power_info;

	ioctl_ctrl = (struct cam_control *)arg;
	if (copy_from_user(&dev_config, (void __user *) ioctl_ctrl->handle,
	sizeof(dev_config)))
	return -EFAULT;
	rc = cam_mem_get_cpu_buf(dev_config.packet_handle,
	(uint64_t *)&generic_pkt_addr, &pkt_len);
	if (rc) {
	CAM_ERR(CAM_OIS,
	"error in converting command Handle Error: %d", rc);
	return rc;
	}

	if (dev_config.offset > pkt_len) {
	CAM_ERR(CAM_OIS,
	"offset is out of bound: off: %lld len: %zu",
	dev_config.offset, pkt_len);
	return -EINVAL;
	}

	csl_packet = (struct cam_packet *)
	(generic_pkt_addr + dev_config.offset);
	switch (csl_packet->header.op_code & 0xFFFFFF) {
	case CAM_OIS_PACKET_OPCODE_INIT:
	offset = (uint32_t *)&csl_packet->payload;
	offset += (csl_packet->cmd_buf_offset / sizeof(uint32_t));
	cmd_desc = (struct cam_cmd_buf_desc *)(offset);

	/* Loop through multiple command buffers */
	for (i = 0; i < csl_packet->num_cmd_buf; i++) {
	total_cmd_buf_in_bytes = cmd_desc[i].length;
	if (!total_cmd_buf_in_bytes)
	continue;

	rc = cam_mem_get_cpu_buf(cmd_desc[i].mem_handle,
	(uint64_t *)&generic_ptr, &len_of_buff);
	if (rc < 0) {
	CAM_ERR(CAM_OIS, "Failed to get cpu buf");
	return rc;
	}
	cmd_buf = (uint32_t *)generic_ptr;
	if (!cmd_buf) {
	CAM_ERR(CAM_OIS, "invalid cmd buf");
	return -EINVAL;
	}
	cmd_buf += cmd_desc[i].offset / sizeof(uint32_t);
	cmm_hdr = (struct common_header *)cmd_buf;

	switch (cmm_hdr->cmd_type) {
	case CAMERA_SENSOR_CMD_TYPE_I2C_INFO:
	rc = cam_ois_slaveInfo_pkt_parser(
	o_ctrl, cmd_buf);
	if (rc < 0) {
	CAM_ERR(CAM_OIS,
	"Failed in parsing slave info");
	return rc;
	}
	break;
	case CAMERA_SENSOR_CMD_TYPE_PWR_UP:
	case CAMERA_SENSOR_CMD_TYPE_PWR_DOWN:
	CAM_DBG(CAM_OIS,
	"Received power settings buffer");
	rc = cam_sensor_update_power_settings(
	cmd_buf,
	total_cmd_buf_in_bytes,
	power_info);
	if (rc) {
	CAM_ERR(CAM_OIS,
	"Failed: parse power settings");
	return rc;
	}
	break;
	default:
	if (o_ctrl->i2c_init_data.is_settings_valid == 0) {
	CAM_DBG(CAM_OIS,
	"Received init settings");
	i2c_reg_settings =
	&(o_ctrl->i2c_init_data);
	i2c_reg_settings->is_settings_valid = 1;
	i2c_reg_settings->request_id = 0;
	rc = cam_sensor_i2c_command_parser(
	&o_ctrl->io_master_info,
	i2c_reg_settings,
	&cmd_desc[i], 1);
	if (rc < 0) {
	CAM_ERR(CAM_OIS,
	"init parsing failed: %d", rc);
	return rc;
	}
	} else if ((o_ctrl->is_ois_calib != 0) &&
	(o_ctrl->i2c_calib_data.is_settings_valid ==
	0)) {
	CAM_DBG(CAM_OIS,
	"Received calib settings");
	i2c_reg_settings = &(o_ctrl->i2c_calib_data);
	i2c_reg_settings->is_settings_valid = 1;
	i2c_reg_settings->request_id = 0;
	rc = cam_sensor_i2c_command_parser(
	&o_ctrl->io_master_info,
	i2c_reg_settings,
	&cmd_desc[i], 1);
	if (rc < 0) {
	CAM_ERR(CAM_OIS,
	"Calib parsing failed: %d", rc);
	return rc;
	}
	}
	break;
	}
	}

	if (o_ctrl->cam_ois_state != CAM_OIS_CONFIG) {
	rc = cam_ois_power_up(o_ctrl);
	if (rc) {
	CAM_ERR(CAM_OIS, " OIS Power up failed");
	return rc;
	}
	o_ctrl->cam_ois_state = CAM_OIS_CONFIG;
	}

	if (o_ctrl->ois_fw_flag) {
	rc = cam_ois_fw_download(o_ctrl);
	if (rc) {
	CAM_ERR(CAM_OIS, "Failed OIS FW Download");
	goto pwr_dwn;
	}
	}

	rc = cam_ois_apply_settings(o_ctrl, &o_ctrl->i2c_init_data);
	if (rc < 0) {
	CAM_ERR(CAM_OIS, "Cannot apply Init settings");
	goto pwr_dwn;
	}

	if (o_ctrl->is_ois_calib) {
	rc = cam_ois_apply_settings(o_ctrl,
	&o_ctrl->i2c_calib_data);
	if (rc) {
	CAM_ERR(CAM_OIS, "Cannot apply calib data");
	goto pwr_dwn;
	}
	}

	rc = delete_request(&o_ctrl->i2c_init_data);
	if (rc < 0) {
	CAM_WARN(CAM_OIS,
	"Fail deleting Init data: rc: %d", rc);
	rc = 0;
	}
	rc = delete_request(&o_ctrl->i2c_calib_data);
	if (rc < 0) {
	CAM_WARN(CAM_OIS,
	"Fail deleting Calibration data: rc: %d", rc);
	rc = 0;
	}
	break;
	case CAM_OIS_PACKET_OPCODE_OIS_CONTROL:
	if (o_ctrl->cam_ois_state < CAM_OIS_CONFIG) {
	rc = -EINVAL;
	CAM_WARN(CAM_OIS,
	"Not in right state to control OIS: %d",
	o_ctrl->cam_ois_state);
	return rc;
	}
	offset = (uint32_t *)&csl_packet->payload;
	offset += (csl_packet->cmd_buf_offset / sizeof(uint32_t));
	cmd_desc = (struct cam_cmd_buf_desc *)(offset);
	i2c_reg_settings = &(o_ctrl->i2c_mode_data);
	i2c_reg_settings->is_settings_valid = 1;
	i2c_reg_settings->request_id = 0;
	rc = cam_sensor_i2c_command_parser(&o_ctrl->io_master_info,
	i2c_reg_settings,
	cmd_desc, 1);
	if (rc < 0) {
	CAM_ERR(CAM_OIS, "OIS pkt parsing failed: %d", rc);
	return rc;
	}

	rc = cam_ois_apply_settings(o_ctrl, i2c_reg_settings);
	if (rc < 0) {
	CAM_ERR(CAM_OIS, "Cannot apply mode settings");
	return rc;
	}

	rc = delete_request(i2c_reg_settings);
	if (rc < 0)
	CAM_ERR(CAM_OIS,
	"Fail deleting Mode data: rc: %d", rc);
	break;
	default:
	break;
	}
	return rc;
	pwr_dwn:
	cam_ois_power_down(o_ctrl);
	return rc;
	}

	void cam_ois_shutdown(struct cam_ois_ctrl_t *o_ctrl)
	{
	int rc = 0;
	struct cam_ois_soc_private *soc_private =
	(struct cam_ois_soc_private *)o_ctrl->soc_info.soc_private;
	struct cam_sensor_power_ctrl_t *power_info =
	&soc_private->power_info;

	if (o_ctrl->cam_ois_state == CAM_OIS_INIT)
	return;

	if (o_ctrl->cam_ois_state >= CAM_OIS_CONFIG) {
	rc = cam_ois_power_down(o_ctrl);
	if (rc < 0)
	CAM_ERR(CAM_OIS, "OIS Power down failed");
	o_ctrl->cam_ois_state = CAM_OIS_ACQUIRE;
	}

	if (o_ctrl->cam_ois_state >= CAM_OIS_ACQUIRE) {
	rc = cam_destroy_device_hdl(o_ctrl->bridge_intf.device_hdl);
	if (rc < 0)
	CAM_ERR(CAM_OIS, "destroying the device hdl");
	o_ctrl->bridge_intf.device_hdl = -1;
	o_ctrl->bridge_intf.link_hdl = -1;
	o_ctrl->bridge_intf.session_hdl = -1;
	}

	kfree(power_info->power_setting);
	kfree(power_info->power_down_setting);
	power_info->power_setting = NULL;
	power_info->power_down_setting = NULL;

	o_ctrl->cam_ois_state = CAM_OIS_INIT;
	}

	/**
	* cam_ois_driver_cmd - Handle ois cmds
	* @e_ctrl: ctrl structure
	* @arg: Camera control command argument
	*
	* Returns success or failure
	*/
	int cam_ois_driver_cmd(struct cam_ois_ctrl_t o_ctrl, void arg)
	{
	int rc = 0;
	struct cam_ois_query_cap_t ois_cap = {0};
	struct cam_control cmd = (struct cam_control )arg;

	if (!o_ctrl \|\| !arg) {
	CAM_ERR(CAM_OIS, "Invalid arguments");
	return -EINVAL;
	}

	if (cmd->handle_type != CAM_HANDLE_USER_POINTER) {
	CAM_ERR(CAM_OIS, "Invalid handle type: %d",
	cmd->handle_type);
	return -EINVAL;
	}

	mutex_lock(&(o_ctrl->ois_mutex));
	switch (cmd->op_code) {
	case CAM_QUERY_CAP:
	ois_cap.slot_info = o_ctrl->soc_info.index;

	if (copy_to_user((void __user *) cmd->handle,
	&ois_cap,
	sizeof(struct cam_ois_query_cap_t))) {
	CAM_ERR(CAM_OIS, "Failed Copy to User");
	rc = -EFAULT;
	goto release_mutex;
	}
	CAM_DBG(CAM_OIS, "ois_cap: ID: %d", ois_cap.slot_info);
	break;
	case CAM_ACQUIRE_DEV:
	rc = cam_ois_get_dev_handle(o_ctrl, arg);
	if (rc) {
	CAM_ERR(CAM_OIS, "Failed to acquire dev");
	goto release_mutex;
	}

	o_ctrl->cam_ois_state = CAM_OIS_ACQUIRE;
	break;
	case CAM_START_DEV:
	if (o_ctrl->cam_ois_state != CAM_OIS_CONFIG) {
	rc = -EINVAL;
	CAM_WARN(CAM_OIS,
	"Not in right state for start : %d",
	o_ctrl->cam_ois_state);
	goto release_mutex;
	}
	o_ctrl->cam_ois_state = CAM_OIS_START;
	break;
	case CAM_CONFIG_DEV:
	rc = cam_ois_pkt_parse(o_ctrl, arg);
	if (rc) {
	CAM_ERR(CAM_OIS, "Failed in ois pkt Parsing");
	goto release_mutex;
	}
	break;
	case CAM_RELEASE_DEV:
	if (o_ctrl->cam_ois_state == CAM_OIS_START) {
	rc = -EINVAL;
	CAM_WARN(CAM_OIS,
	"Cant release ois: in start state");
	goto release_mutex;
	}

	if (o_ctrl->cam_ois_state == CAM_OIS_CONFIG) {
	rc = cam_ois_power_down(o_ctrl);
	if (rc < 0) {
	CAM_ERR(CAM_OIS, "OIS Power down failed");
	goto release_mutex;
	}
	}

	if (o_ctrl->bridge_intf.device_hdl == -1) {
	CAM_ERR(CAM_OIS, "link hdl: %d device hdl: %d",
	o_ctrl->bridge_intf.device_hdl,
	o_ctrl->bridge_intf.link_hdl);
	rc = -EINVAL;
	goto release_mutex;
	}
	rc = cam_destroy_device_hdl(o_ctrl->bridge_intf.device_hdl);
	if (rc < 0)
	CAM_ERR(CAM_OIS, "destroying the device hdl");
	o_ctrl->bridge_intf.device_hdl = -1;
	o_ctrl->bridge_intf.link_hdl = -1;
	o_ctrl->bridge_intf.session_hdl = -1;
	o_ctrl->cam_ois_state = CAM_OIS_INIT;
	break;
	case CAM_STOP_DEV:
	if (o_ctrl->cam_ois_state != CAM_OIS_START) {
	rc = -EINVAL;
	CAM_WARN(CAM_OIS,
	"Not in right state for stop : %d",
	o_ctrl->cam_ois_state);
	}
	o_ctrl->cam_ois_state = CAM_OIS_CONFIG;
	break;
	default:
	CAM_ERR(CAM_OIS, "invalid opcode");
	goto release_mutex;
	}
	release_mutex:
	mutex_unlock(&(o_ctrl->ois_mutex));
	return rc;
	}