Release 4.7 drivers/hwmon/hwmon.c
/*
* hwmon.c - part of lm_sensors, Linux kernel modules for hardware monitoring
*
* This file defines the sysfs class "hwmon", for use by sensors drivers.
*
* Copyright (C) 2005 Mark M. Hoffman <mhoffman@lightlink.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/kdev_t.h>
#include <linux/idr.h>
#include <linux/hwmon.h>
#include <linux/gfp.h>
#include <linux/spinlock.h>
#include <linux/pci.h>
#include <linux/string.h>
#define HWMON_ID_PREFIX "hwmon"
#define HWMON_ID_FORMAT HWMON_ID_PREFIX "%d"
struct hwmon_device {
const char *name;
struct device dev;
};
#define to_hwmon_device(d) container_of(d, struct hwmon_device, dev)
static ssize_t
show_name(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%s\n", to_hwmon_device(dev)->name);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
static struct attribute *hwmon_dev_attrs[] = {
&dev_attr_name.attr,
NULL
};
static umode_t hwmon_dev_name_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
if (to_hwmon_device(dev)->name == NULL)
return 0;
return attr->mode;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 53 | 100.00% | 1 | 100.00% |
| Total | 53 | 100.00% | 1 | 100.00% |
static struct attribute_group hwmon_dev_attr_group = {
.attrs = hwmon_dev_attrs,
.is_visible = hwmon_dev_name_is_visible,
};
static const struct attribute_group *hwmon_dev_attr_groups[] = {
&hwmon_dev_attr_group,
NULL
};
static void hwmon_dev_release(struct device *dev)
{
kfree(to_hwmon_device(dev));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
static struct class hwmon_class = {
.name = "hwmon",
.owner = THIS_MODULE,
.dev_groups = hwmon_dev_attr_groups,
.dev_release = hwmon_dev_release,
};
static DEFINE_IDA(hwmon_ida);
/**
* hwmon_device_register_with_groups - register w/ hwmon
* @dev: the parent device
* @name: hwmon name attribute
* @drvdata: driver data to attach to created device
* @groups: List of attribute groups to create
*
* hwmon_device_unregister() must be called when the device is no
* longer needed.
*
* Returns the pointer to the new device.
*/
struct device *
hwmon_device_register_with_groups(struct device *dev, const char *name,
void *drvdata,
const struct attribute_group **groups)
{
struct hwmon_device *hwdev;
int err, id;
/* Do not accept invalid characters in hwmon name attribute */
if (name && (!strlen(name) || strpbrk(name, "-* \t\n")))
return ERR_PTR(-EINVAL);
id = ida_simple_get(&hwmon_ida, 0, 0, GFP_KERNEL);
if (id < 0)
return ERR_PTR(id);
hwdev = kzalloc(sizeof(*hwdev), GFP_KERNEL);
if (hwdev == NULL) {
err = -ENOMEM;
goto ida_remove;
}
hwdev->name = name;
hwdev->dev.class = &hwmon_class;
hwdev->dev.parent = dev;
hwdev->dev.groups = groups;
hwdev->dev.of_node = dev ? dev->of_node : NULL;
dev_set_drvdata(&hwdev->dev, drvdata);
dev_set_name(&hwdev->dev, HWMON_ID_FORMAT, id);
err = device_register(&hwdev->dev);
if (err)
goto free;
return &hwdev->dev;
free:
kfree(hwdev);
ida_remove:
ida_simple_remove(&hwmon_ida, id);
return ERR_PTR(err);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 162 | 69.53% | 2 | 28.57% |
| mark m. hoffman | mark m. hoffman | 53 | 22.75% | 2 | 28.57% |
| jonathan cameron | jonathan cameron | 12 | 5.15% | 1 | 14.29% |
| tony jones | tony jones | 5 | 2.15% | 1 | 14.29% |
| greg kroah-hartman | greg kroah-hartman | 1 | 0.43% | 1 | 14.29% |
| Total | 233 | 100.00% | 7 | 100.00% |
EXPORT_SYMBOL_GPL(hwmon_device_register_with_groups);
/**
* hwmon_device_register - register w/ hwmon
* @dev: the device to register
*
* hwmon_device_unregister() must be called when the device is no
* longer needed.
*
* Returns the pointer to the new device.
*/
struct device *hwmon_device_register(struct device *dev)
{
return hwmon_device_register_with_groups(dev, NULL, NULL, NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 22 | 91.67% | 1 | 50.00% |
| mark m. hoffman | mark m. hoffman | 2 | 8.33% | 1 | 50.00% |
| Total | 24 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(hwmon_device_register);
/**
* hwmon_device_unregister - removes the previously registered class device
*
* @dev: the class device to destroy
*/
void hwmon_device_unregister(struct device *dev)
{
int id;
if (likely(sscanf(dev_name(dev), HWMON_ID_FORMAT, &id) == 1)) {
device_unregister(dev);
ida_simple_remove(&hwmon_ida, id);
} else
dev_dbg(dev->parent,
"hwmon_device_unregister() failed: bad class ID!\n");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark m. hoffman | mark m. hoffman | 46 | 79.31% | 2 | 40.00% |
| tony jones | tony jones | 7 | 12.07% | 1 | 20.00% |
| kay sievers | kay sievers | 3 | 5.17% | 1 | 20.00% |
| jonathan cameron | jonathan cameron | 2 | 3.45% | 1 | 20.00% |
| Total | 58 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL_GPL(hwmon_device_unregister);
static void devm_hwmon_release(struct device *dev, void *res)
{
struct device *hwdev = *(struct device **)res;
hwmon_device_unregister(hwdev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 34 | 100.00% | 1 | 100.00% |
| Total | 34 | 100.00% | 1 | 100.00% |
/**
* devm_hwmon_device_register_with_groups - register w/ hwmon
* @dev: the parent device
* @name: hwmon name attribute
* @drvdata: driver data to attach to created device
* @groups: List of attribute groups to create
*
* Returns the pointer to the new device. The new device is automatically
* unregistered with the parent device.
*/
struct device *
devm_hwmon_device_register_with_groups(struct device *dev, const char *name,
void *drvdata,
const struct attribute_group **groups)
{
struct device **ptr, *hwdev;
if (!dev)
return ERR_PTR(-EINVAL);
ptr = devres_alloc(devm_hwmon_release, sizeof(*ptr), GFP_KERNEL);
if (!ptr)
return ERR_PTR(-ENOMEM);
hwdev = hwmon_device_register_with_groups(dev, name, drvdata, groups);
if (IS_ERR(hwdev))
goto error;
*ptr = hwdev;
devres_add(dev, ptr);
return hwdev;
error:
devres_free(ptr);
return hwdev;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 124 | 100.00% | 1 | 100.00% |
| Total | 124 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(devm_hwmon_device_register_with_groups);
static int devm_hwmon_match(struct device *dev, void *res, void *data)
{
struct device **hwdev = res;
return *hwdev == data;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 33 | 100.00% | 1 | 100.00% |
| Total | 33 | 100.00% | 1 | 100.00% |
/**
* devm_hwmon_device_unregister - removes a previously registered hwmon device
*
* @dev: the parent device of the device to unregister
*/
void devm_hwmon_device_unregister(struct device *dev)
{
WARN_ON(devres_release(dev, devm_hwmon_release, devm_hwmon_match, dev));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(devm_hwmon_device_unregister);
static void __init hwmon_pci_quirks(void)
{
#if defined CONFIG_X86 && defined CONFIG_PCI
struct pci_dev *sb;
u16 base;
u8 enable;
/* Open access to 0x295-0x296 on MSI MS-7031 */
sb = pci_get_device(PCI_VENDOR_ID_ATI, 0x436c, NULL);
if (sb) {
if (sb->subsystem_vendor == 0x1462 && /* MSI */
sb->subsystem_device == 0x0031) { /* MS-7031 */
pci_read_config_byte(sb, 0x48, &enable);
pci_read_config_word(sb, 0x64, &base);
if (base == 0 && !(enable & BIT(2))) {
dev_info(&sb->dev,
"Opening wide generic port at 0x295\n");
pci_write_config_word(sb, 0x64, 0x295);
pci_write_config_byte(sb, 0x48,
enable | BIT(2));
}
}
pci_dev_put(sb);
}
#endif
}
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| Person | Tokens | Prop | Commits | CommitProp |
| jean delvare | jean delvare | 141 | 100.00% | 2 | 100.00% |
| Total | 141 | 100.00% | 2 | 100.00% |
static int __init hwmon_init(void)
{
int err;
hwmon_pci_quirks();
err = class_register(&hwmon_class);
if (err) {
pr_err("couldn't register hwmon sysfs class\n");
return err;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark m. hoffman | mark m. hoffman | 26 | 65.00% | 1 | 25.00% |
| guenter roeck | guenter roeck | 10 | 25.00% | 1 | 25.00% |
| jean delvare | jean delvare | 3 | 7.50% | 1 | 25.00% |
| joe perches | joe perches | 1 | 2.50% | 1 | 25.00% |
| Total | 40 | 100.00% | 4 | 100.00% |
static void __exit hwmon_exit(void)
{
class_unregister(&hwmon_class);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mark m. hoffman | mark m. hoffman | 13 | 86.67% | 1 | 50.00% |
| guenter roeck | guenter roeck | 2 | 13.33% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
subsys_initcall(hwmon_init);
module_exit(hwmon_exit);
MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>");
MODULE_DESCRIPTION("hardware monitoring sysfs/class support");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| guenter roeck | guenter roeck | 647 | 61.56% | 4 | 25.00% |
| mark m. hoffman | mark m. hoffman | 202 | 19.22% | 2 | 12.50% |
| jean delvare | jean delvare | 147 | 13.99% | 2 | 12.50% |
| jonathan cameron | jonathan cameron | 16 | 1.52% | 1 | 6.25% |
| tony jones | tony jones | 13 | 1.24% | 1 | 6.25% |
| frans meulenbroeks | frans meulenbroeks | 10 | 0.95% | 1 | 6.25% |
| joe perches | joe perches | 8 | 0.76% | 1 | 6.25% |
| kay sievers | kay sievers | 3 | 0.29% | 1 | 6.25% |
| tim schmielau | tim schmielau | 3 | 0.29% | 1 | 6.25% |
| greg kroah-hartman | greg kroah-hartman | 1 | 0.10% | 1 | 6.25% |
| david brownell | david brownell | 1 | 0.10% | 1 | 6.25% |
| Total | 1051 | 100.00% | 16 | 100.00% |
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