msm: camera: common: Fixes the exit module code flow

Fixes exit call flow as a part of rmmod.

CRs-Fixed: 2675526
Change-Id: I47111a737cb06d9bb3d0a417a471c5c9fb545999
Signed-off-by: Jigarkumar Zala <[email protected]>

drivers/cam_cdm/cam_cdm_hw_core.c

@@ -2206,10 +2206,19 @@ static void cam_hw_cdm_component_unbind(struct device *dev,
 		return;
 	}
 
-	rc = cam_hw_cdm_deinit(cdm_hw, NULL, 0);
+	if (cdm_hw->hw_state == CAM_HW_STATE_POWER_UP) {
+		rc = cam_hw_cdm_deinit(cdm_hw, NULL, 0);
+		if (rc) {
+			CAM_ERR(CAM_CDM, "Deinit failed for hw");
+			return;
+		}
+	}
+
+	rc = cam_cdm_intf_deregister_hw_cdm(cdm_hw_intf,
+		cdm_hw->soc_info.soc_private, CAM_HW_CDM, cdm_core->index);
 	if (rc) {
-		CAM_ERR(CAM_CDM, "Deinit failed for hw");
-		return;
+		CAM_ERR(CAM_CDM,
+			"HW_CDM interface deregistration failed: rd: %d", rc);
 	}
 
 	rc = cam_cpas_unregister_client(cdm_core->cpas_handle);

drivers/cam_icp/cam_icp_subdev.c

@@ -171,7 +171,8 @@ static int cam_icp_component_bind(struct device *dev,
 
 	hw_mgr_intf = kzalloc(sizeof(*hw_mgr_intf), GFP_KERNEL);
 	if (!hw_mgr_intf) {
-		rc = -EINVAL;
+		rc = -ENOMEM;
+		CAM_ERR(CAM_ICP, "Memory allocation fail");
 		goto hw_alloc_fail;
 	}
 
@@ -225,7 +226,6 @@ static void cam_icp_component_unbind(struct device *dev,
 {
 	int i;
 	struct v4l2_subdev *sd;
-	struct cam_subdev *subdev;
 	struct platform_device *pdev = to_platform_device(dev);
 
 	if (!pdev) {
@@ -239,15 +239,10 @@ static void cam_icp_component_unbind(struct device *dev,
 		return;
 	}
 
-	subdev = v4l2_get_subdevdata(sd);
-	if (!subdev) {
-		CAM_ERR(CAM_ICP, "cam subdev is NULL");
-		return;
-	}
-
 	for (i = 0; i < CAM_ICP_CTX_MAX; i++)
 		cam_icp_context_deinit(&g_icp_dev.ctx_icp[i]);
 
+	cam_icp_hw_mgr_deinit();
 	cam_node_deinit(g_icp_dev.node);
 	cam_subdev_remove(&g_icp_dev.sd);
 	mutex_destroy(&g_icp_dev.icp_lock);

drivers/cam_icp/icp_hw/a5_hw/a5_dev.c

@@ -168,7 +168,7 @@ static int cam_a5_component_bind(struct device *dev,
 	}
 
 	CAM_DBG(CAM_ICP, "soc info : %pK",
-				(void *)&a5_dev->soc_info);
+			(void *)&a5_dev->soc_info);
 	rc = cam_a5_register_cpas(&a5_dev->soc_info,
 			core_info, a5_dev_intf->hw_idx);
 	if (rc < 0) {
@@ -185,6 +185,7 @@ static int cam_a5_component_bind(struct device *dev,
 	return 0;
 
 cpas_reg_failed:
+	cam_a5_deinit_soc_resources(&a5_dev->soc_info);
 init_soc_failure:
 match_err:
 	kfree(a5_dev->core_info);
@@ -200,9 +201,21 @@ a5_dev_alloc_failure:
 static void cam_a5_component_unbind(struct device *dev,
 	struct device *master_dev, void *data)
 {
+	struct cam_hw_info *a5_dev = NULL;
+	struct cam_hw_intf *a5_dev_intf = NULL;
+	struct cam_a5_device_core_info *core_info = NULL;
 	struct platform_device *pdev = to_platform_device(dev);
 
-	CAM_DBG(CAM_ICP, "Unbinding component: %s", pdev->name);
+	a5_dev_intf = platform_get_drvdata(pdev);
+	a5_dev = a5_dev_intf->hw_priv;
+	core_info = (struct cam_a5_device_core_info *)a5_dev->core_info;
+	cam_cpas_unregister_client(core_info->cpas_handle);
+	cam_a5_deinit_soc_resources(&a5_dev->soc_info);
+	memset(&cam_a5_soc_info, 0, sizeof(struct a5_soc_info));
+	kfree(a5_dev->core_info);
+	a5_dev->core_info = NULL;
+	kfree(a5_dev);
+	kfree(a5_dev_intf);
 }
 
 const static struct component_ops cam_a5_component_ops = {
@@ -222,6 +235,12 @@ int cam_a5_probe(struct platform_device *pdev)
 	return rc;
 }
 
+static int cam_a5_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &cam_a5_component_ops);
+	return 0;
+}
+
 static const struct of_device_id cam_a5_dt_match[] = {
 	{
 		.compatible = "qcom,cam-a5",
@@ -233,6 +252,7 @@ MODULE_DEVICE_TABLE(of, cam_a5_dt_match);
 
 struct platform_driver cam_a5_driver = {
 	.probe = cam_a5_probe,
+	.remove = cam_a5_remove,
 	.driver = {
 		.name = "cam-a5",
 		.owner = THIS_MODULE,

drivers/cam_icp/icp_hw/a5_hw/a5_soc.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/io.h>
@@ -174,6 +174,15 @@ int cam_a5_init_soc_resources(struct cam_hw_soc_info *soc_info,
 	return rc;
 }
 
+void cam_a5_deinit_soc_resources(struct cam_hw_soc_info *soc_info)
+{
+	int rc = 0;
+
+	rc = cam_soc_util_release_platform_resource(soc_info);
+	if (rc)
+		CAM_WARN(CAM_ICP, "release platform resources fail");
+}
+
 int cam_a5_enable_soc_resources(struct cam_hw_soc_info *soc_info)
 {
 	int rc = 0;

drivers/cam_icp/icp_hw/a5_hw/a5_soc.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef CAM_A5_SOC_H
@@ -30,6 +30,8 @@ struct a5_soc_info {
 int cam_a5_init_soc_resources(struct cam_hw_soc_info *soc_info,
 	irq_handler_t a5_irq_handler, void *irq_data);
 
+void cam_a5_deinit_soc_resources(struct cam_hw_soc_info *soc_info);
+
 int cam_a5_enable_soc_resources(struct cam_hw_soc_info *soc_info);
 
 int cam_a5_disable_soc_resources(struct cam_hw_soc_info *soc_info);

drivers/cam_icp/icp_hw/bps_hw/bps_dev.c

@@ -177,9 +177,21 @@ static int cam_bps_component_bind(struct device *dev,
 static void cam_bps_component_unbind(struct device *dev,
 	struct device *master_dev, void *data)
 {
+	struct cam_hw_info            *bps_dev = NULL;
+	struct cam_hw_intf            *bps_dev_intf = NULL;
+	struct cam_bps_device_core_info   *core_info = NULL;
 	struct platform_device *pdev = to_platform_device(dev);
 
 	CAM_DBG(CAM_ICP, "Unbinding component: %s", pdev->name);
+	bps_dev_intf = platform_get_drvdata(pdev);
+	bps_dev = bps_dev_intf->hw_priv;
+	core_info = (struct cam_bps_device_core_info *)bps_dev->core_info;
+	cam_cpas_unregister_client(core_info->cpas_handle);
+	cam_bps_deinit_soc_resources(&bps_dev->soc_info);
+
+	kfree(bps_dev->core_info);
+	kfree(bps_dev);
+	kfree(bps_dev_intf);
 }
 
 const static struct component_ops cam_bps_component_ops = {
@@ -199,6 +211,12 @@ int cam_bps_probe(struct platform_device *pdev)
 	return rc;
 }
 
+static int cam_bps_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &cam_bps_component_ops);
+	return 0;
+}
+
 static const struct of_device_id cam_bps_dt_match[] = {
 	{
 		.compatible = "qcom,cam-bps",
@@ -210,6 +228,7 @@ MODULE_DEVICE_TABLE(of, cam_bps_dt_match);
 
 struct platform_driver cam_bps_driver = {
 	.probe = cam_bps_probe,
+	.remove = cam_bps_remove,
 	.driver = {
 		.name = "cam-bps",
 		.owner = THIS_MODULE,

drivers/cam_icp/icp_hw/bps_hw/bps_soc.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/io.h>
@@ -52,6 +52,15 @@ int cam_bps_init_soc_resources(struct cam_hw_soc_info *soc_info,
 	return rc;
 }
 
+void cam_bps_deinit_soc_resources(struct cam_hw_soc_info *soc_info)
+{
+	int rc = 0;
+
+	rc = cam_soc_util_release_platform_resource(soc_info);
+	if (rc)
+		CAM_WARN(CAM_ICP, "release platform resources fail");
+}
+
 int cam_bps_enable_soc_resources(struct cam_hw_soc_info *soc_info)
 {
 	int rc = 0;

drivers/cam_icp/icp_hw/bps_hw/bps_soc.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _CAM_BPS_SOC_H_
@@ -23,4 +23,5 @@ int cam_bps_transfer_gdsc_control(struct cam_hw_soc_info *soc_info);
 int cam_bps_update_clk_rate(struct cam_hw_soc_info *soc_info,
 	uint32_t clk_rate);
 int cam_bps_toggle_clk(struct cam_hw_soc_info *soc_info, bool clk_enable);
+void cam_bps_deinit_soc_resources(struct cam_hw_soc_info *soc_info);
 #endif /* _CAM_BPS_SOC_H_*/

drivers/cam_icp/icp_hw/icp_hw_mgr/cam_icp_hw_mgr.c

@@ -1887,8 +1887,11 @@ static int cam_icp_hw_mgr_create_debugfs_entry(void)
 	int rc = 0;
 
 	icp_hw_mgr.dentry = debugfs_create_dir("camera_icp", NULL);
-	if (!icp_hw_mgr.dentry)
+	if (IS_ERR_OR_NULL(icp_hw_mgr.dentry)) {
+		CAM_ERR(CAM_ICP, "Debugfs entry dir: %s failed",
+			"camrea_icp");
 		return -ENOMEM;
+	}
 
 	if (!debugfs_create_bool("icp_pc",
 		0644,
@@ -5818,6 +5821,7 @@ static int cam_icp_mgr_alloc_devs(struct device_node *of_node)
 		sizeof(struct cam_hw_intf *) * num_dev, GFP_KERNEL);
 	if (!icp_hw_mgr.devices[CAM_ICP_DEV_A5]) {
 		rc = -ENOMEM;
+		CAM_ERR(CAM_ICP, "a5 allocation fail: rc = %d", rc);
 		goto num_a5_failed;
 	}
 
@@ -5834,6 +5838,7 @@ static int cam_icp_mgr_alloc_devs(struct device_node *of_node)
 		sizeof(struct cam_hw_intf *), GFP_KERNEL);
 	if (!icp_hw_mgr.devices[CAM_ICP_DEV_IPE]) {
 		rc = -ENOMEM;
+		CAM_ERR(CAM_ICP, "ipe device allocation fail : rc= %d", rc);
 		goto num_ipe_failed;
 	}
 
@@ -5846,6 +5851,7 @@ static int cam_icp_mgr_alloc_devs(struct device_node *of_node)
 		sizeof(struct cam_hw_intf *), GFP_KERNEL);
 	if (!icp_hw_mgr.devices[CAM_ICP_DEV_BPS]) {
 		rc = -ENOMEM;
+		CAM_ERR(CAM_ICP, "bps device allocation fail : rc= %d", rc);
 		goto num_bps_failed;
 	}
 
@@ -5874,9 +5880,10 @@ static int cam_icp_mgr_init_devs(struct device_node *of_node)
 	struct cam_hw_intf *child_dev_intf = NULL;
 
 	rc = cam_icp_mgr_alloc_devs(of_node);
-	if (rc)
+	if (rc) {
+		CAM_ERR(CAM_ICP, "alloc_devs fail : rc = %d", rc);
 		return rc;
-
+	}
 	count = of_property_count_strings(of_node, "compat-hw-name");
 	if (!count) {
 		CAM_ERR(CAM_ICP, "no compat hw found in dev tree, cnt = %d",
@@ -5972,25 +5979,31 @@ static int cam_icp_mgr_create_wq(void)
 	icp_hw_mgr.cmd_work_data =
 		kzalloc(sizeof(struct hfi_cmd_work_data) * ICP_WORKQ_NUM_TASK,
 		GFP_KERNEL);
-	if (!icp_hw_mgr.cmd_work_data)
+	if (!icp_hw_mgr.cmd_work_data) {
+		CAM_ERR(CAM_ICP, "Mem reservation fail for cmd_work_data");
 		goto cmd_work_data_failed;
-
+	}
 	icp_hw_mgr.msg_work_data =
 		kzalloc(sizeof(struct hfi_msg_work_data) * ICP_WORKQ_NUM_TASK,
 		GFP_KERNEL);
-	if (!icp_hw_mgr.msg_work_data)
+	if (!icp_hw_mgr.msg_work_data) {
+		CAM_ERR(CAM_ICP, "Mem reservation fail for msg_work_data");
 		goto msg_work_data_failed;
+	}
 
 	icp_hw_mgr.timer_work_data =
 		kzalloc(sizeof(struct hfi_msg_work_data) * ICP_WORKQ_NUM_TASK,
 		GFP_KERNEL);
-	if (!icp_hw_mgr.timer_work_data)
+	if (!icp_hw_mgr.timer_work_data) {
+		CAM_ERR(CAM_ICP, "Mem reservation fail for timer_work_data");
 		goto timer_work_data_failed;
+	}
 
 	rc = cam_icp_hw_mgr_create_debugfs_entry();
-	if (rc)
+	if (rc) {
+		CAM_ERR(CAM_ICP, "create_debugfs_entry fail= rc: %d", rc);
 		goto debugfs_create_failed;
-
+	}
 	for (i = 0; i < ICP_WORKQ_NUM_TASK; i++)
 		icp_hw_mgr.msg_work->task.pool[i].payload =
 				&icp_hw_mgr.msg_work_data[i];
@@ -6020,6 +6033,13 @@ cmd_work_failed:
 	return rc;
 }
 
+void cam_icp_mgr_destroy_wq(void)
+{
+	cam_req_mgr_workq_destroy(&icp_hw_mgr.timer_work);
+	cam_req_mgr_workq_destroy(&icp_hw_mgr.msg_work);
+	cam_req_mgr_workq_destroy(&icp_hw_mgr.cmd_work);
+}
+
 static int cam_icp_mgr_cmd(void *hw_mgr_priv, void *cmd_args)
 {
 	int rc = 0;
@@ -6104,9 +6124,10 @@ int cam_icp_hw_mgr_init(struct device_node *of_node, uint64_t *hw_mgr_hdl,
 	}
 
 	rc = cam_icp_mgr_init_devs(of_node);
-	if (rc)
+	if (rc) {
+		CAM_ERR(CAM_ICP, "cam_icp_mgr_init_devs fail: rc: %d", rc);
 		goto dev_init_failed;
-
+	}
 	rc = cam_smmu_get_handle("icp", &icp_hw_mgr.iommu_hdl);
 	if (rc) {
 		CAM_ERR(CAM_ICP, "get mmu handle failed: %d", rc);
@@ -6120,8 +6141,10 @@ int cam_icp_hw_mgr_init(struct device_node *of_node, uint64_t *hw_mgr_hdl,
 	}
 
 	rc = cam_icp_mgr_create_wq();
-	if (rc)
+	if (rc) {
+		CAM_ERR(CAM_ICP, "cam_icp_mgr_create_wq fail: rc=%d", rc);
 		goto icp_wq_create_failed;
+	}
 
 	if (iommu_hdl)
 		*iommu_hdl = icp_hw_mgr.iommu_hdl;
@@ -6146,3 +6169,18 @@ dev_init_failed:
 
 	return rc;
 }
+
+void cam_icp_hw_mgr_deinit(void)
+{
+	int i = 0;
+
+	debugfs_remove_recursive(icp_hw_mgr.dentry);
+	icp_hw_mgr.dentry = NULL;
+	cam_icp_mgr_destroy_wq();
+	kfree(icp_hw_mgr.devices[CAM_ICP_DEV_BPS]);
+	kfree(icp_hw_mgr.devices[CAM_ICP_DEV_IPE]);
+	kfree(icp_hw_mgr.devices[CAM_ICP_DEV_A5]);
+	mutex_destroy(&icp_hw_mgr.hw_mgr_mutex);
+	for (i = 0; i < CAM_ICP_CTX_MAX; i++)
+		mutex_destroy(&icp_hw_mgr.ctx_data[i].ctx_mutex);
+}

drivers/cam_icp/icp_hw/include/cam_icp_hw_mgr_intf.h

@@ -33,6 +33,8 @@
 int cam_icp_hw_mgr_init(struct device_node *of_node,
 	uint64_t *hw_mgr_hdl, int *iommu_hdl);
 
+void cam_icp_hw_mgr_deinit(void);
+
 /**
  * struct cam_icp_cpas_vote
  * @ahb_vote: AHB vote info

drivers/cam_icp/icp_hw/ipe_hw/ipe_dev.c

@@ -169,9 +169,20 @@ static int cam_ipe_component_bind(struct device *dev,
 static void cam_ipe_component_unbind(struct device *dev,
 	struct device *master_dev, void *data)
 {
+	struct cam_hw_info            *ipe_dev = NULL;
+	struct cam_hw_intf            *ipe_dev_intf = NULL;
+	struct cam_ipe_device_core_info   *core_info = NULL;
 	struct platform_device *pdev = to_platform_device(dev);
 
 	CAM_DBG(CAM_ICP, "Unbinding component: %s", pdev->name);
+	ipe_dev_intf = platform_get_drvdata(pdev);
+	ipe_dev = ipe_dev_intf->hw_priv;
+	core_info = (struct cam_ipe_device_core_info *)ipe_dev->core_info;
+	cam_cpas_unregister_client(core_info->cpas_handle);
+	cam_ipe_deinit_soc_resources(&ipe_dev->soc_info);
+	kfree(ipe_dev->core_info);
+	kfree(ipe_dev);
+	kfree(ipe_dev_intf);
 }
 
 
@@ -192,6 +203,12 @@ int cam_ipe_probe(struct platform_device *pdev)
 	return rc;
 }
 
+static int cam_ipe_remove(struct platform_device *pdev)
+{
+	component_del(&pdev->dev, &cam_ipe_component_ops);
+	return 0;
+}
+
 static const struct of_device_id cam_ipe_dt_match[] = {
 	{
 		.compatible = "qcom,cam-ipe",
@@ -203,6 +220,7 @@ MODULE_DEVICE_TABLE(of, cam_ipe_dt_match);
 
 struct platform_driver cam_ipe_driver = {
 	.probe = cam_ipe_probe,
+	.remove = cam_ipe_remove,
 	.driver = {
 		.name = "cam-ipe",
 		.owner = THIS_MODULE,

drivers/cam_icp/icp_hw/ipe_hw/ipe_soc.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/io.h>
@@ -103,6 +103,15 @@ int cam_ipe_init_soc_resources(struct cam_hw_soc_info *soc_info,
 	return rc;
 }
 
+void cam_ipe_deinit_soc_resources(struct cam_hw_soc_info *soc_info)
+{
+	int rc = 0;
+
+	rc = cam_soc_util_release_platform_resource(soc_info);
+	if (rc)
+		CAM_WARN(CAM_ICP, "release platform resources fail");
+}
+
 int cam_ipe_enable_soc_resources(struct cam_hw_soc_info *soc_info)
 {
 	int rc = 0;

drivers/cam_icp/icp_hw/ipe_hw/ipe_soc.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef CAM_IPE_SOC_H
@@ -23,4 +23,5 @@ int cam_ipe_transfer_gdsc_control(struct cam_hw_soc_info *soc_info);
 int cam_ipe_update_clk_rate(struct cam_hw_soc_info *soc_info,
 	uint32_t clk_rate);
 int cam_ipe_toggle_clk(struct cam_hw_soc_info *soc_info, bool clk_enable);
+void cam_ipe_deinit_soc_resources(struct cam_hw_soc_info *soc_info);
 #endif /* CAM_IPE_SOC_H */

drivers/cam_isp/cam_isp_context.c

@@ -5302,7 +5302,7 @@ static int cam_isp_context_debug_register(void)
 	isp_ctx_debug.dentry = debugfs_create_dir("camera_isp_ctx",
 		NULL);
 
-	if (!isp_ctx_debug.dentry) {
+	if (IS_ERR_OR_NULL(isp_ctx_debug.dentry)) {
 		CAM_ERR(CAM_ISP, "failed to create dentry");
 		return -ENOMEM;
 	}
@@ -5383,7 +5383,8 @@ int cam_isp_context_init(struct cam_isp_context *ctx,
 	for (i = 0; i < CAM_ISP_CTX_EVENT_MAX; i++)
 		atomic64_set(&ctx->event_record_head[i], -1);
 
-	cam_isp_context_debug_register();
+	if (!isp_ctx_debug.dentry)
+		cam_isp_context_debug_register();
 
 err:
 	return rc;
@@ -5391,8 +5392,6 @@ err:
 
 int cam_isp_context_deinit(struct cam_isp_context *ctx)
 {
-	int rc = 0;
-
 	if (ctx->base)
 		cam_context_deinit(ctx->base);
 
@@ -5401,6 +5400,9 @@ int cam_isp_context_deinit(struct cam_isp_context *ctx)
 			__cam_isp_ctx_substate_val_to_type(
 			ctx->substate_activated));
 
+	debugfs_remove_recursive(isp_ctx_debug.dentry);
+	isp_ctx_debug.dentry = NULL;
 	memset(ctx, 0, sizeof(*ctx));
-	return rc;
+
+	return 0;
 }

drivers/cam_isp/cam_isp_dev.c

@@ -175,7 +175,13 @@ static void cam_isp_dev_component_unbind(struct device *dev,
 {
 	int rc = 0;
 	int i;
+	const char *compat_str = NULL;
+	struct platform_device *pdev = to_platform_device(dev);
+
+	rc = of_property_read_string_index(pdev->dev.of_node, "arch-compat", 0,
+		(const char **)&compat_str);
 
+	cam_isp_hw_mgr_deinit(compat_str);
 	/* clean up resources */
 	for (i = 0; i < CAM_CTX_MAX; i++) {
 		rc = cam_isp_context_deinit(&g_isp_dev.ctx_isp[i]);

drivers/cam_isp/isp_hw_mgr/cam_ife_hw_mgr.c

@@ -7867,3 +7867,27 @@ secure_fail:
 	g_ife_hw_mgr.mgr_common.img_iommu_hdl = -1;
 	return rc;
 }
+
+void cam_ife_hw_mgr_deinit(void)
+{
+	int i = 0;
+
+	cam_req_mgr_workq_destroy(&g_ife_hw_mgr.workq);
+	debugfs_remove_recursive(g_ife_hw_mgr.debug_cfg.dentry);
+	g_ife_hw_mgr.debug_cfg.dentry = NULL;
+
+	for (i = 0; i < CAM_CTX_MAX; i++) {
+		cam_tasklet_deinit(
+			&g_ife_hw_mgr.mgr_common.tasklet_pool[i]);
+		kfree(g_ife_hw_mgr.ctx_pool[i].cdm_cmd);
+		g_ife_hw_mgr.ctx_pool[i].cdm_cmd = NULL;
+		g_ife_hw_mgr.ctx_pool[i].common.tasklet_info = NULL;
+	}
+
+	cam_smmu_destroy_handle(
+		g_ife_hw_mgr.mgr_common.img_iommu_hdl_secure);
+	g_ife_hw_mgr.mgr_common.img_iommu_hdl_secure = -1;
+
+	cam_smmu_destroy_handle(g_ife_hw_mgr.mgr_common.img_iommu_hdl);
+	g_ife_hw_mgr.mgr_common.img_iommu_hdl = -1;
+}

drivers/cam_isp/isp_hw_mgr/cam_ife_hw_mgr.h

@@ -228,5 +228,6 @@ struct cam_ife_hw_event_recovery_data {
  *
  */
 int cam_ife_hw_mgr_init(struct cam_hw_mgr_intf *hw_mgr_intf, int *iommu_hdl);
+void cam_ife_hw_mgr_deinit(void);
 
 #endif /* _CAM_IFE_HW_MGR_H_ */

drivers/cam_isp/isp_hw_mgr/cam_isp_hw_mgr.c

@@ -25,3 +25,13 @@ int cam_isp_hw_mgr_init(const char   *device_name_str,
 
 	return rc;
 }
+
+void cam_isp_hw_mgr_deinit(const char *device_name_str)
+{
+	if (strnstr(device_name_str, "ife", strlen(device_name_str)))
+		cam_ife_hw_mgr_deinit();
+	else if (strnstr(device_name_str, "tfe", strlen(device_name_str)))
+		cam_tfe_hw_mgr_deinit();
+	else
+		CAM_ERR(CAM_ISP, "Invalid ISP hw type :%s", device_name_str);
+}

drivers/cam_isp/isp_hw_mgr/cam_tfe_hw_mgr.c

@@ -5523,3 +5523,27 @@ secure_fail:
 	g_tfe_hw_mgr.mgr_common.img_iommu_hdl = -1;
 	return rc;
 }
+
+void cam_tfe_hw_mgr_deinit(void)
+{
+	int i = 0;
+
+	cam_req_mgr_workq_destroy(&g_tfe_hw_mgr.workq);
+	debugfs_remove_recursive(g_tfe_hw_mgr.debug_cfg.dentry);
+	g_tfe_hw_mgr.debug_cfg.dentry = NULL;
+
+	for (i = 0; i < CAM_CTX_MAX; i++) {
+		cam_tasklet_deinit(
+			&g_tfe_hw_mgr.mgr_common.tasklet_pool[i]);
+		kfree(g_tfe_hw_mgr.ctx_pool[i].cdm_cmd);
+		g_tfe_hw_mgr.ctx_pool[i].cdm_cmd = NULL;
+		g_tfe_hw_mgr.ctx_pool[i].common.tasklet_info = NULL;
+	}
+
+	cam_smmu_destroy_handle(
+		g_tfe_hw_mgr.mgr_common.img_iommu_hdl_secure);
+	g_tfe_hw_mgr.mgr_common.img_iommu_hdl_secure = -1;
+
+	cam_smmu_destroy_handle(g_tfe_hw_mgr.mgr_common.img_iommu_hdl);
+	g_tfe_hw_mgr.mgr_common.img_iommu_hdl = -1;
+}

drivers/cam_isp/isp_hw_mgr/cam_tfe_hw_mgr.h

@@ -195,12 +195,17 @@ struct cam_tfe_hw_event_recovery_data {
  */
 #ifdef CONFIG_SPECTRA_TFE
 int cam_tfe_hw_mgr_init(struct cam_hw_mgr_intf *hw_mgr_intf, int *iommu_hdl);
-
+void cam_tfe_hw_mgr_deinit(void);
 #else
 static inline int cam_tfe_hw_mgr_init(struct cam_hw_mgr_intf *hw_mgr_intf,
-	int *iommu_hdl) {
+	int *iommu_hdl)
+{
 	return -EINVAL;
 }
+
+static inline void cam_tfe_hw_mgr_deinit(void)
+{
+}
 #endif
 
 #endif /* _CAM_TFE_HW_MGR_H_ */

drivers/cam_isp/isp_hw_mgr/include/cam_isp_hw_mgr_intf.h

@@ -371,4 +371,6 @@ struct cam_isp_start_args {
 int cam_isp_hw_mgr_init(const char    *device_name_str,
 	struct cam_hw_mgr_intf *hw_mgr, int *iommu_hdl);
 
+void cam_isp_hw_mgr_deinit(const char *device_name_str);
+
 #endif /* __CAM_ISP_HW_MGR_INTF_H__ */

drivers/cam_isp/isp_hw_mgr/isp_hw/ife_csid_hw/cam_ife_csid_soc.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
  */
 #include <linux/slab.h>
 #include "cam_ife_csid_soc.h"
@@ -110,6 +110,9 @@ int cam_ife_csid_deinit_soc_resources(
 		CAM_ERR(CAM_ISP, "CPAS unregistration failed rc=%d", rc);
 
 	rc = cam_soc_util_release_platform_resource(soc_info);
+	if (rc)
+		CAM_WARN(CAM_ISP,
+			"soc release platform resource fail rc: %d", rc);
 
 	return rc;
 }

drivers/cam_isp/isp_hw_mgr/isp_hw/vfe_hw/cam_vfe_soc.c

@@ -208,11 +208,12 @@ int cam_vfe_deinit_soc_resources(struct cam_hw_soc_info *soc_info)
 		CAM_ERR(CAM_ISP,
 			"Error! Release platform resources failed rc=%d", rc);
 
-	rc = cam_soc_util_clk_put(&soc_private->dsp_clk);
-	if (rc < 0)
-		CAM_ERR(CAM_ISP,
-			"Error Put dsp clk failed rc=%d", rc);
-
+	if (soc_private->dsp_clk_index != -1) {
+		rc = cam_soc_util_clk_put(&soc_private->dsp_clk);
+		if (rc < 0)
+			CAM_ERR(CAM_ISP,
+				"Error Put dsp clk failed rc=%d", rc);
+	}
 	kfree(soc_private);
 
 	return rc;

drivers/cam_req_mgr/cam_req_mgr_core.c

@@ -4220,6 +4220,7 @@ int cam_req_mgr_core_device_deinit(void)
 	}
 
 	CAM_DBG(CAM_CRM, "g_crm_core_dev %pK", g_crm_core_dev);
+	cam_req_mgr_debug_unregister();
 	mutex_destroy(&g_crm_core_dev->crm_lock);
 	kfree(g_crm_core_dev);
 	g_crm_core_dev = NULL;

drivers/cam_req_mgr/cam_req_mgr_debug.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
  */
 
 #include "cam_req_mgr_debug.h"
@@ -8,6 +8,7 @@
 #define MAX_SESS_INFO_LINE_BUFF_LEN 256
 
 static char sess_info_buffer[MAX_SESS_INFO_LINE_BUFF_LEN];
+static struct dentry  *debugfs_root;
 
 static int cam_req_mgr_debug_set_bubble_recovery(void *data, u64 val)
 {
@@ -112,28 +113,34 @@ static const struct file_operations session_info = {
 
 int cam_req_mgr_debug_register(struct cam_req_mgr_core_device *core_dev)
 {
-	struct dentry *debugfs_root;
 	char dirname[32] = {0};
-
 	snprintf(dirname, sizeof(dirname), "cam_req_mgr");
 	debugfs_root = debugfs_create_dir(dirname, NULL);
-	if (!debugfs_root)
+	if (IS_ERR_OR_NULL(debugfs_root)) {
+		CAM_ERR(CAM_CRM, "Failed to create cam_req_mgr debugfs dir");
 		return -ENOMEM;
+	}
 
 	if (!debugfs_create_file("sessions_info", 0644,
 		debugfs_root, core_dev, &session_info))
-		return -ENOMEM;
+		CAM_WARN(CAM_CRM,
+			"Failed to create sessions_info debugfs file");
 
 	if (!debugfs_create_file("bubble_recovery", 0644,
 		debugfs_root, core_dev, &bubble_recovery))
-		return -ENOMEM;
+		CAM_WARN(CAM_CRM,
+			"Failed to create bubble_recovery debugfs file");
 
 	if (!debugfs_create_bool("recovery_on_apply_fail",
-		0644,
-		debugfs_root,
-		&core_dev->recovery_on_apply_fail)) {
-		return -ENOMEM;
-	}
-
+		0644, debugfs_root,
+		&core_dev->recovery_on_apply_fail))
+		CAM_WARN(CAM_CRM,
+			"Failed to create recovery_on_apply_fail debugfs bool");
 	return 0;
 }
+
+void cam_req_mgr_debug_unregister(void)
+{
+	if (!debugfs_root)
+		debugfs_remove_recursive(debugfs_root);
+}

drivers/cam_req_mgr/cam_req_mgr_debug.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _CAM_REQ_MGR_DEBUG_H_
@@ -8,7 +8,9 @@
 
 #include <linux/debugfs.h>
 #include "cam_req_mgr_core.h"
+#include "cam_debug_util.h"
 
 int cam_req_mgr_debug_register(struct cam_req_mgr_core_device *core_dev);
+void cam_req_mgr_debug_unregister(void);
 
 #endif

drivers/cam_sensor_module/cam_flash/cam_flash_dev.c

@@ -519,6 +519,7 @@ static void cam_flash_component_unbind(struct device *dev,
 	cam_flash_shutdown(fctrl);
 	mutex_unlock(&fctrl->flash_mutex);
 	cam_unregister_subdev(&(fctrl->v4l2_dev_str));
+	cam_flash_put_source_node_data(fctrl);
 	platform_set_drvdata(pdev, NULL);
 	v4l2_set_subdevdata(&fctrl->v4l2_dev_str.sd, NULL);
 	kfree(fctrl);
@@ -659,9 +660,9 @@ int32_t cam_flash_init_module(void)
 	int32_t rc = 0;
 
 	rc = platform_driver_register(&cam_flash_platform_driver);
-	if (rc == 0) {
-		CAM_DBG(CAM_FLASH, "platform probe success");
-		return 0;
+	if (rc < 0) {
+		CAM_ERR(CAM_FLASH, "platform probe failed rc: %d", rc);
+		return rc;
 	}
 
 	rc = i2c_add_driver(&cam_flash_i2c_driver);

drivers/cam_sensor_module/cam_flash/cam_flash_soc.c

@@ -8,6 +8,57 @@
 #include "cam_flash_soc.h"
 #include "cam_res_mgr_api.h"
 
+void cam_flash_put_source_node_data(struct cam_flash_ctrl *fctrl)
+{
+	uint32_t count = 0, i = 0;
+	struct cam_flash_private_soc *soc_private = NULL;
+
+	if (!fctrl) {
+		CAM_ERR(CAM_FLASH, "NULL flash control structure");
+		return;
+	}
+
+	soc_private = fctrl->soc_info.soc_private;
+
+	if (fctrl->switch_trigger) {
+		CAM_DBG(CAM_FLASH, "switch trigger: %s",
+			soc_private->switch_trigger_name);
+		cam_res_mgr_led_trigger_unregister(fctrl->switch_trigger);
+	}
+
+	if (fctrl->flash_num_sources) {
+		if (fctrl->flash_num_sources > CAM_FLASH_MAX_LED_TRIGGERS) {
+			CAM_ERR(CAM_FLASH, "Invalid LED count: %d", count);
+			return;
+		}
+
+		count = fctrl->flash_num_sources;
+
+		for (i = 0; i < count; i++) {
+			CAM_DBG(CAM_FLASH, "Flash default trigger %s",
+				soc_private->flash_trigger_name[i]);
+			cam_res_mgr_led_trigger_unregister(
+				fctrl->flash_trigger[i]);
+		}
+	}
+
+	if (fctrl->torch_num_sources) {
+		if (fctrl->torch_num_sources > CAM_FLASH_MAX_LED_TRIGGERS) {
+			CAM_ERR(CAM_FLASH, "Invalid LED count: %d", count);
+			return;
+		}
+
+		count = fctrl->torch_num_sources;
+
+		for (i = 0; i < count; i++) {
+			CAM_DBG(CAM_FLASH, "Flash default trigger %s",
+				soc_private->flash_trigger_name[i]);
+			cam_res_mgr_led_trigger_unregister(
+				fctrl->torch_trigger[i]);
+		}
+	}
+}
+
 static int32_t cam_get_source_node_info(
 	struct device_node *of_node,
 	struct cam_flash_ctrl *fctrl,

drivers/cam_sensor_module/cam_flash/cam_flash_soc.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _CAM_FLASH_SOC_H_
@@ -11,4 +11,5 @@
 int cam_flash_get_dt_data(struct cam_flash_ctrl *fctrl,
 	struct cam_hw_soc_info *soc_info);
 
+void cam_flash_put_source_node_data(struct cam_flash_ctrl *fctrl);
 #endif /*_CAM_FLASH_SOC_H_*/

drivers/cam_sync/cam_sync.c

@@ -1072,24 +1072,39 @@ int cam_synx_sync_signal(int32_t sync_obj, uint32_t synx_status)
 	return rc;
 }
 
-static int cam_sync_register_synx_bind_ops(void)
+static int cam_sync_register_synx_bind_ops(
+	struct synx_register_params *object)
 {
 	int rc = 0;
-	struct synx_register_params params;
 
-	params.name = CAM_SYNC_NAME;
-	params.type = SYNX_TYPE_CSL;
-	params.ops.register_callback = cam_sync_register_callback;
-	params.ops.deregister_callback = cam_sync_deregister_callback;
-	params.ops.enable_signaling = cam_sync_get_obj_ref;
-	params.ops.signal = cam_synx_sync_signal;
-
-	rc = synx_register_ops(&params);
+	rc = synx_register_ops(object);
 	if (rc)
 		CAM_ERR(CAM_SYNC, "synx registration fail with rc=%d", rc);
 
 	return rc;
 }
+
+static void cam_sync_unregister_synx_bind_ops(
+	struct synx_register_params *object)
+{
+	int rc = 0;
+
+	rc = synx_deregister_ops(object);
+	if (rc)
+		CAM_ERR(CAM_SYNC, "sync unregistration fail with %d", rc);
+}
+
+static void cam_sync_configure_synx_obj(struct synx_register_params *object)
+{
+	struct synx_register_params *params = object;
+
+	params->name = CAM_SYNC_NAME;
+	params->type = SYNX_TYPE_CSL;
+	params->ops.register_callback = cam_sync_register_callback;
+	params->ops.deregister_callback = cam_sync_deregister_callback;
+	params->ops.enable_signaling = cam_sync_get_obj_ref;
+	params->ops.signal = cam_synx_sync_signal;
+}
 #endif
 
 static int cam_sync_component_bind(struct device *dev,
@@ -1167,8 +1182,9 @@ static int cam_sync_component_bind(struct device *dev,
 	trigger_cb_without_switch = false;
 	cam_sync_create_debugfs();
 #if IS_REACHABLE(CONFIG_MSM_GLOBAL_SYNX)
-	CAM_INFO(CAM_SYNC, "Registering with synx driver");
-	rc = cam_sync_register_synx_bind_ops();
+	CAM_DBG(CAM_SYNC, "Registering with synx driver");
+	cam_sync_configure_synx_obj(&sync_dev->params);
+	rc = cam_sync_register_synx_bind_ops(&sync_dev->params);
 	if (rc)
 		goto v4l2_fail;
 #endif
@@ -1195,6 +1211,9 @@ static void cam_sync_component_unbind(struct device *dev,
 
 	v4l2_device_unregister(sync_dev->vdev->v4l2_dev);
 	cam_sync_media_controller_cleanup(sync_dev);
+#if IS_REACHABLE(CONFIG_MSM_GLOBAL_SYNX)
+	cam_sync_unregister_synx_bind_ops(&sync_dev->params);
+#endif
 	video_unregister_device(sync_dev->vdev);
 	video_device_release(sync_dev->vdev);
 	debugfs_remove_recursive(sync_dev->dentry);

drivers/cam_sync/cam_sync_private.h

@@ -17,6 +17,10 @@
 #include <media/v4l2-event.h>
 #include <media/v4l2-ioctl.h>
 
+#if IS_REACHABLE(CONFIG_MSM_GLOBAL_SYNX)
+#include <synx_api.h>
+#endif
+
 #ifdef CONFIG_CAM_SYNC_DBG
 #define CDBG(fmt, args...) pr_err(fmt, ##args)
 #else
@@ -177,6 +181,7 @@ struct cam_signalable_info {
  * @work_queue      : Work queue used for dispatching kernel callbacks
  * @cam_sync_eventq : Event queue used to dispatch user payloads to user space
  * @bitmap          : Bitmap representation of all sync objects
+ * @params          : Parameters for synx call back registration
  */
 struct sync_device {
 	struct video_device *vdev;
@@ -190,6 +195,9 @@ struct sync_device {
 	struct v4l2_fh *cam_sync_eventq;
 	spinlock_t cam_sync_eventq_lock;
 	DECLARE_BITMAP(bitmap, CAM_SYNC_MAX_OBJS);
+#if IS_REACHABLE(CONFIG_MSM_GLOBAL_SYNX)
+	struct synx_register_params params;
+#endif
 };
 
 

drivers/cam_utils/cam_soc_util.c

@@ -184,35 +184,35 @@ DEFINE_SIMPLE_ATTRIBUTE(cam_soc_util_clk_lvl_control,
 static int cam_soc_util_create_clk_lvl_debugfs(
 	struct cam_hw_soc_info *soc_info)
 {
-	struct dentry *dentry = NULL;
-
 	if (!soc_info) {
 		CAM_ERR(CAM_UTIL, "soc info is NULL");
 		return -EINVAL;
 	}
 
-	if (soc_info->dentry)
+	if (soc_info->dentry) {
+		CAM_DBG(CAM_UTIL, "Debubfs entry for %s already exist",
+			soc_info->dev_name);
 		return 0;
+	}
 
 	memset(debugfs_dir_name, 0, sizeof(debugfs_dir_name));
 	strlcat(debugfs_dir_name, "clk_dir_", sizeof(debugfs_dir_name));
 	strlcat(debugfs_dir_name, soc_info->dev_name, sizeof(debugfs_dir_name));
 
-	dentry = soc_info->dentry;
-	dentry = debugfs_create_dir(debugfs_dir_name, NULL);
-	if (!dentry) {
+	soc_info->dentry = debugfs_create_dir(debugfs_dir_name, NULL);
+	if (IS_ERR_OR_NULL(soc_info->dentry)) {
 		CAM_ERR(CAM_UTIL, "failed to create debug directory");
 		return -ENOMEM;
 	}
 
 	if (!debugfs_create_file("clk_lvl_options", 0444,
-		dentry, soc_info, &cam_soc_util_clk_lvl_options)) {
+		soc_info->dentry, soc_info, &cam_soc_util_clk_lvl_options)) {
 		CAM_ERR(CAM_UTIL, "failed to create clk_lvl_options");
 		goto err;
 	}
 
 	if (!debugfs_create_file("clk_lvl_control", 0644,
-		dentry, soc_info, &cam_soc_util_clk_lvl_control)) {
+		soc_info->dentry, soc_info, &cam_soc_util_clk_lvl_control)) {
 		CAM_ERR(CAM_UTIL, "failed to create clk_lvl_control");
 		goto err;
 	}
@@ -223,8 +223,10 @@ static int cam_soc_util_create_clk_lvl_debugfs(
 	return 0;
 
 err:
-	debugfs_remove_recursive(dentry);
-	dentry = NULL;
+	CAM_ERR(CAM_UTIL, "Error in creating Debugfs Entry: %s",
+		soc_info->dev_name);
+	debugfs_remove_recursive(soc_info->dentry);
+	soc_info->dentry = NULL;
 	return -ENOMEM;
 }