tegra: hwpm: rename source files

Shorten source file names by removing "tegra_hwpm" prefix. This will
make understanding the code more legible.

Jira THWPM-58

Change-Id: I39aac11c9f2a763a254b0605f9d96a7b0f372992
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2729469
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Vasuki Shankar <vasukis@nvidia.com>
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
GVS: Gerrit_Virtual_Submit

os/linux/ip_utils.c

@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2021-2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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/slab.h>
+#include <soc/tegra/fuse.h>
+#include <uapi/linux/tegra-soc-hwpm-uapi.h>
+
+#include <tegra_hwpm_log.h>
+#include <tegra_hwpm_io.h>
+#include <tegra_hwpm.h>
+
+struct platform_device *tegra_soc_hwpm_pdev;
+struct hwpm_ip_register_list *ip_register_list_head;
+
+#define REGISTER_IP	true
+#define UNREGISTER_IP	false
+
+static int tegra_hwpm_alloc_ip_register_list_node(
+	struct tegra_soc_hwpm_ip_ops *hwpm_ip_ops,
+	struct hwpm_ip_register_list **node_ptr)
+{
+	struct hwpm_ip_register_list *new_node = NULL;
+
+	new_node = kzalloc(sizeof(struct hwpm_ip_register_list), GFP_KERNEL);
+	if (new_node == NULL) {
+		tegra_hwpm_err(NULL,
+			"struct hwpm_ip_register_list node allocation failed");
+		return -ENOMEM;
+	}
+	new_node->next = NULL;
+
+	/* Copy given ip register details to node */
+	memcpy(&new_node->ip_ops, hwpm_ip_ops,
+		sizeof(struct tegra_soc_hwpm_ip_ops));
+	(*node_ptr) = new_node;
+
+	return 0;
+}
+
+static int tegra_hwpm_note_ip_register(
+	struct tegra_soc_hwpm_ip_ops *hwpm_ip_ops)
+{
+	int err = 0;
+	struct hwpm_ip_register_list *node;
+
+	if (ip_register_list_head == NULL) {
+		err = tegra_hwpm_alloc_ip_register_list_node(hwpm_ip_ops,
+			&ip_register_list_head);
+		if (err != 0) {
+			tegra_hwpm_err(NULL,
+				"failed to note ip registration");
+			return err;
+		}
+	} else {
+		node = ip_register_list_head;
+		while (node->next != NULL) {
+			node = node->next;
+		}
+
+		err = tegra_hwpm_alloc_ip_register_list_node(hwpm_ip_ops,
+			&node->next);
+		if (err != 0) {
+			tegra_hwpm_err(NULL,
+				"failed to note ip registration");
+			return err;
+		}
+	}
+
+	return err;
+}
+
+void tegra_soc_hwpm_ip_register(struct tegra_soc_hwpm_ip_ops *hwpm_ip_ops)
+{
+	struct tegra_soc_hwpm *hwpm = NULL;
+	int ret = 0;
+
+	if (hwpm_ip_ops == NULL) {
+		tegra_hwpm_err(NULL, "IP details missing");
+		return;
+	}
+
+	if (tegra_soc_hwpm_pdev == NULL) {
+		tegra_hwpm_dbg(hwpm, hwpm_info | hwpm_dbg_ip_register,
+			"Noting IP 0x%llx register request",
+			hwpm_ip_ops->ip_base_address);
+		ret = tegra_hwpm_note_ip_register(hwpm_ip_ops);
+		if (ret != 0) {
+			tegra_hwpm_err(NULL,
+				"Couldn't save IP register details");
+			return;
+		}
+	} else {
+		if (hwpm_ip_ops->ip_dev == NULL) {
+			tegra_hwpm_err(hwpm, "IP dev to register is NULL");
+			return;
+		}
+		hwpm = platform_get_drvdata(tegra_soc_hwpm_pdev);
+
+		tegra_hwpm_dbg(hwpm, hwpm_info | hwpm_dbg_ip_register,
+		"Register IP 0x%llx", hwpm_ip_ops->ip_base_address);
+
+		ret = hwpm->active_chip->extract_ip_ops(hwpm,
+			hwpm_ip_ops, REGISTER_IP);
+		if (ret < 0) {
+			tegra_hwpm_err(hwpm, "Failed to set IP ops for IP %d",
+				hwpm_ip_ops->resource_enum);
+		}
+	}
+}
+
+void tegra_soc_hwpm_ip_unregister(struct tegra_soc_hwpm_ip_ops *hwpm_ip_ops)
+{
+	struct tegra_soc_hwpm *hwpm = NULL;
+	int ret = 0;
+
+	if (hwpm_ip_ops == NULL) {
+		tegra_hwpm_err(NULL, "IP details missing");
+		return;
+	}
+
+	if (tegra_soc_hwpm_pdev == NULL) {
+		tegra_hwpm_dbg(hwpm, hwpm_info | hwpm_dbg_ip_register,
+			"HWPM device not available");
+	} else {
+		if (hwpm_ip_ops->ip_dev == NULL) {
+			tegra_hwpm_err(hwpm, "IP dev to unregister is NULL");
+			return;
+		}
+		hwpm = platform_get_drvdata(tegra_soc_hwpm_pdev);
+
+		tegra_hwpm_dbg(hwpm, hwpm_info | hwpm_dbg_ip_register,
+		"Unregister IP 0x%llx", hwpm_ip_ops->ip_base_address);
+
+		ret = hwpm->active_chip->extract_ip_ops(hwpm,
+			hwpm_ip_ops, UNREGISTER_IP);
+		if (ret < 0) {
+			tegra_hwpm_err(hwpm, "Failed to reset IP ops for IP %d",
+				hwpm_ip_ops->resource_enum);
+		}
+	}
+}