DCE-KMD: Refactor dce_work_cond_sw_resource_init()

- Move resource init specific to PM and bootstrap modules
  to respective PM and bootstrap init functions.

- Motivation here is 2 fold:
    1) To keep common code common across OSs.
    2) Move resource init to respective sub-modules.
        - We will have separate PM module for HVRTOS.
        - We will have separate dce-worker module for HVRTOS.

JIRA TDS-16052

Change-Id: I40f6943eb4173a0da7201dc58afb19aee2a0d04e
Signed-off-by: anupamg <anupamg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3190873
Reviewed-by: Arun Swain <arswain@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Mahesh Kumar <mahkumar@nvidia.com>

drivers/platform/tegra/dce/dce-bootstrap.c

@@ -408,6 +408,12 @@ int dce_boot_interface_init(struct tegra_dce *d)
 		goto err_init;
 	}
 
+	ret = dce_init_work(d, &d->dce_bootstrap_work, dce_bootstrap_work_fn);
+	if (ret) {
+		dce_err(d, "Bootstrap work init failed");
+		goto err_init;
+	}
+
 err_init:
 	return ret;
 }

drivers/platform/tegra/dce/dce-init-deinit.c

@@ -65,6 +65,12 @@ int dce_driver_init(struct tegra_dce *d)
 		goto err_client_init;
 	}
 
+	ret = dce_pm_init(d);
+	if (ret) {
+		dce_err(d, "Failed to init DCE Power management");
+		goto err_pm_init;
+	}
+
 	ret = dce_work_cond_sw_resource_init(d);
 	if (ret) {
 		dce_err(d, "dce sw resource init failed");
@@ -82,6 +88,8 @@ int dce_driver_init(struct tegra_dce *d)
 err_fsm_init:
 	dce_work_cond_sw_resource_deinit(d);
 err_sw_init:
+	dce_pm_deinit(d);
+err_pm_init:
 	dce_client_deinit(d);
 err_client_init:
 	dce_admin_deinit(d);
@@ -109,6 +117,8 @@ void dce_driver_deinit(struct tegra_dce *d)
 
 	dce_work_cond_sw_resource_deinit(d);
 
+	dce_pm_deinit(d);
+
 	dce_client_deinit(d);
 
 	dce_admin_deinit(d);

drivers/platform/tegra/dce/dce-pm.c

@@ -170,3 +170,23 @@ int dce_pm_exit_sc7(struct tegra_dce *d)
 out:
 	return ret;
 }
+
+int dce_pm_init(struct tegra_dce *d)
+{
+	int ret = 0;
+
+	ret = dce_init_work(d, &d->dce_resume_work, dce_resume_work_fn);
+	if (ret) {
+		dce_err(d, "resume work init failed");
+		goto done;
+	}
+
+done:
+	return ret;
+}
+
+void dce_pm_deinit(struct tegra_dce *d)
+{
+	USE(d);
+	// Nothing to do.
+}

drivers/platform/tegra/dce/dce-worker.c

@@ -110,18 +110,6 @@ int dce_work_cond_sw_resource_init(struct tegra_dce *d)
 	int ret = 0;
 	int i;
 
-	ret = dce_init_work(d, &d->dce_bootstrap_work, dce_bootstrap_work_fn);
-	if (ret) {
-		dce_err(d, "Bootstrap work init failed");
-		goto exit;
-	}
-
-	ret = dce_init_work(d, &d->dce_resume_work, dce_resume_work_fn);
-	if (ret) {
-		dce_err(d, "resume work init failed");
-		goto exit;
-	}
-
 	if (dce_cond_init(&d->dce_bootstrap_done)) {
 		dce_err(d, "dce boot wait condition init failed");
 		ret = -1;

drivers/platform/tegra/dce/include/dce-pm.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2022-2023, NVIDIA CORPORATION & AFFILIATES.  All rights reserved.
+ * SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
  */
 
 #ifndef DCE_PM_H
@@ -12,6 +12,8 @@ struct dce_sc7_state {
 	uint32_t hsp_ie;
 };
 
+int dce_pm_init(struct tegra_dce *d);
+void dce_pm_deinit(struct tegra_dce *d);
 int dce_pm_enter_sc7(struct tegra_dce *d);
 int dce_pm_exit_sc7(struct tegra_dce *d);
 void dce_resume_work_fn(struct tegra_dce *d);