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Diffstat (limited to 'drivers/base/power/opp/debugfs.c')
-rw-r--r--drivers/base/power/opp/debugfs.c249
1 files changed, 0 insertions, 249 deletions
diff --git a/drivers/base/power/opp/debugfs.c b/drivers/base/power/opp/debugfs.c
deleted file mode 100644
index 81cf120fcf43..000000000000
--- a/drivers/base/power/opp/debugfs.c
+++ /dev/null
@@ -1,249 +0,0 @@
-/*
- * Generic OPP debugfs interface
- *
- * Copyright (C) 2015-2016 Viresh Kumar <viresh.kumar@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/debugfs.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/limits.h>
-#include <linux/slab.h>
-
-#include "opp.h"
-
-static struct dentry *rootdir;
-
-static void opp_set_dev_name(const struct device *dev, char *name)
-{
- if (dev->parent)
- snprintf(name, NAME_MAX, "%s-%s", dev_name(dev->parent),
- dev_name(dev));
- else
- snprintf(name, NAME_MAX, "%s", dev_name(dev));
-}
-
-void opp_debug_remove_one(struct dev_pm_opp *opp)
-{
- debugfs_remove_recursive(opp->dentry);
-}
-
-static bool opp_debug_create_supplies(struct dev_pm_opp *opp,
- struct opp_table *opp_table,
- struct dentry *pdentry)
-{
- struct dentry *d;
- int i;
- char *name;
-
- for (i = 0; i < opp_table->regulator_count; i++) {
- name = kasprintf(GFP_KERNEL, "supply-%d", i);
-
- /* Create per-opp directory */
- d = debugfs_create_dir(name, pdentry);
-
- kfree(name);
-
- if (!d)
- return false;
-
- if (!debugfs_create_ulong("u_volt_target", S_IRUGO, d,
- &opp->supplies[i].u_volt))
- return false;
-
- if (!debugfs_create_ulong("u_volt_min", S_IRUGO, d,
- &opp->supplies[i].u_volt_min))
- return false;
-
- if (!debugfs_create_ulong("u_volt_max", S_IRUGO, d,
- &opp->supplies[i].u_volt_max))
- return false;
-
- if (!debugfs_create_ulong("u_amp", S_IRUGO, d,
- &opp->supplies[i].u_amp))
- return false;
- }
-
- return true;
-}
-
-int opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
-{
- struct dentry *pdentry = opp_table->dentry;
- struct dentry *d;
- char name[25]; /* 20 chars for 64 bit value + 5 (opp:\0) */
-
- /* Rate is unique to each OPP, use it to give opp-name */
- snprintf(name, sizeof(name), "opp:%lu", opp->rate);
-
- /* Create per-opp directory */
- d = debugfs_create_dir(name, pdentry);
- if (!d)
- return -ENOMEM;
-
- if (!debugfs_create_bool("available", S_IRUGO, d, &opp->available))
- return -ENOMEM;
-
- if (!debugfs_create_bool("dynamic", S_IRUGO, d, &opp->dynamic))
- return -ENOMEM;
-
- if (!debugfs_create_bool("turbo", S_IRUGO, d, &opp->turbo))
- return -ENOMEM;
-
- if (!debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend))
- return -ENOMEM;
-
- if (!debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate))
- return -ENOMEM;
-
- if (!opp_debug_create_supplies(opp, opp_table, d))
- return -ENOMEM;
-
- if (!debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
- &opp->clock_latency_ns))
- return -ENOMEM;
-
- opp->dentry = d;
- return 0;
-}
-
-static int opp_list_debug_create_dir(struct opp_device *opp_dev,
- struct opp_table *opp_table)
-{
- const struct device *dev = opp_dev->dev;
- struct dentry *d;
-
- opp_set_dev_name(dev, opp_table->dentry_name);
-
- /* Create device specific directory */
- d = debugfs_create_dir(opp_table->dentry_name, rootdir);
- if (!d) {
- dev_err(dev, "%s: Failed to create debugfs dir\n", __func__);
- return -ENOMEM;
- }
-
- opp_dev->dentry = d;
- opp_table->dentry = d;
-
- return 0;
-}
-
-static int opp_list_debug_create_link(struct opp_device *opp_dev,
- struct opp_table *opp_table)
-{
- const struct device *dev = opp_dev->dev;
- char name[NAME_MAX];
- struct dentry *d;
-
- opp_set_dev_name(opp_dev->dev, name);
-
- /* Create device specific directory link */
- d = debugfs_create_symlink(name, rootdir, opp_table->dentry_name);
- if (!d) {
- dev_err(dev, "%s: Failed to create link\n", __func__);
- return -ENOMEM;
- }
-
- opp_dev->dentry = d;
-
- return 0;
-}
-
-/**
- * opp_debug_register - add a device opp node to the debugfs 'opp' directory
- * @opp_dev: opp-dev pointer for device
- * @opp_table: the device-opp being added
- *
- * Dynamically adds device specific directory in debugfs 'opp' directory. If the
- * device-opp is shared with other devices, then links will be created for all
- * devices except the first.
- *
- * Return: 0 on success, otherwise negative error.
- */
-int opp_debug_register(struct opp_device *opp_dev, struct opp_table *opp_table)
-{
- if (!rootdir) {
- pr_debug("%s: Uninitialized rootdir\n", __func__);
- return -EINVAL;
- }
-
- if (opp_table->dentry)
- return opp_list_debug_create_link(opp_dev, opp_table);
-
- return opp_list_debug_create_dir(opp_dev, opp_table);
-}
-
-static void opp_migrate_dentry(struct opp_device *opp_dev,
- struct opp_table *opp_table)
-{
- struct opp_device *new_dev;
- const struct device *dev;
- struct dentry *dentry;
-
- /* Look for next opp-dev */
- list_for_each_entry(new_dev, &opp_table->dev_list, node)
- if (new_dev != opp_dev)
- break;
-
- /* new_dev is guaranteed to be valid here */
- dev = new_dev->dev;
- debugfs_remove_recursive(new_dev->dentry);
-
- opp_set_dev_name(dev, opp_table->dentry_name);
-
- dentry = debugfs_rename(rootdir, opp_dev->dentry, rootdir,
- opp_table->dentry_name);
- if (!dentry) {
- dev_err(dev, "%s: Failed to rename link from: %s to %s\n",
- __func__, dev_name(opp_dev->dev), dev_name(dev));
- return;
- }
-
- new_dev->dentry = dentry;
- opp_table->dentry = dentry;
-}
-
-/**
- * opp_debug_unregister - remove a device opp node from debugfs opp directory
- * @opp_dev: opp-dev pointer for device
- * @opp_table: the device-opp being removed
- *
- * Dynamically removes device specific directory from debugfs 'opp' directory.
- */
-void opp_debug_unregister(struct opp_device *opp_dev,
- struct opp_table *opp_table)
-{
- if (opp_dev->dentry == opp_table->dentry) {
- /* Move the real dentry object under another device */
- if (!list_is_singular(&opp_table->dev_list)) {
- opp_migrate_dentry(opp_dev, opp_table);
- goto out;
- }
- opp_table->dentry = NULL;
- }
-
- debugfs_remove_recursive(opp_dev->dentry);
-
-out:
- opp_dev->dentry = NULL;
-}
-
-static int __init opp_debug_init(void)
-{
- /* Create /sys/kernel/debug/opp directory */
- rootdir = debugfs_create_dir("opp", NULL);
- if (!rootdir) {
- pr_err("%s: Failed to create root directory\n", __func__);
- return -ENOMEM;
- }
-
- return 0;
-}
-core_initcall(opp_debug_init);
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