mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 21:54:06 +08:00
86c725e3c5
Use ATTRIBUTE_GROUPS macro to simplify the code a bit. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Jean Delvare <jdelvare@suse.de>
150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
/*
|
|
* i5500_temp - Driver for Intel 5500/5520/X58 chipset thermal sensor
|
|
*
|
|
* Copyright (C) 2012, 2014 Jean Delvare <jdelvare@suse.de>
|
|
*
|
|
* 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that 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/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/device.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/hwmon.h>
|
|
#include <linux/hwmon-sysfs.h>
|
|
#include <linux/err.h>
|
|
#include <linux/mutex.h>
|
|
|
|
/* Register definitions from datasheet */
|
|
#define REG_TSTHRCATA 0xE2
|
|
#define REG_TSCTRL 0xE8
|
|
#define REG_TSTHRRPEX 0xEB
|
|
#define REG_TSTHRLO 0xEC
|
|
#define REG_TSTHRHI 0xEE
|
|
#define REG_CTHINT 0xF0
|
|
#define REG_TSFSC 0xF3
|
|
#define REG_CTSTS 0xF4
|
|
#define REG_TSTHRRQPI 0xF5
|
|
#define REG_CTCTRL 0xF7
|
|
#define REG_TSTIMER 0xF8
|
|
|
|
/*
|
|
* Sysfs stuff
|
|
*/
|
|
|
|
/* Sensor resolution : 0.5 degree C */
|
|
static ssize_t show_temp(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev->parent);
|
|
long temp;
|
|
u16 tsthrhi;
|
|
s8 tsfsc;
|
|
|
|
pci_read_config_word(pdev, REG_TSTHRHI, &tsthrhi);
|
|
pci_read_config_byte(pdev, REG_TSFSC, &tsfsc);
|
|
temp = ((long)tsthrhi - tsfsc) * 500;
|
|
|
|
return sprintf(buf, "%ld\n", temp);
|
|
}
|
|
|
|
static ssize_t show_thresh(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev->parent);
|
|
int reg = to_sensor_dev_attr(devattr)->index;
|
|
long temp;
|
|
u16 tsthr;
|
|
|
|
pci_read_config_word(pdev, reg, &tsthr);
|
|
temp = tsthr * 500;
|
|
|
|
return sprintf(buf, "%ld\n", temp);
|
|
}
|
|
|
|
static ssize_t show_alarm(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(dev->parent);
|
|
int nr = to_sensor_dev_attr(devattr)->index;
|
|
u8 ctsts;
|
|
|
|
pci_read_config_byte(pdev, REG_CTSTS, &ctsts);
|
|
return sprintf(buf, "%u\n", (unsigned int)ctsts & (1 << nr));
|
|
}
|
|
|
|
static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
|
|
static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_thresh, NULL, 0xE2);
|
|
static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO, show_thresh, NULL, 0xEC);
|
|
static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_thresh, NULL, 0xEE);
|
|
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 1);
|
|
|
|
static struct attribute *i5500_temp_attrs[] = {
|
|
&dev_attr_temp1_input.attr,
|
|
&sensor_dev_attr_temp1_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
ATTRIBUTE_GROUPS(i5500_temp);
|
|
|
|
static const struct pci_device_id i5500_temp_ids[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x3438) },
|
|
{ 0 },
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, i5500_temp_ids);
|
|
|
|
static int i5500_temp_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
int err;
|
|
struct device *hwmon_dev;
|
|
u32 tstimer;
|
|
s8 tsfsc;
|
|
|
|
err = pci_enable_device(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Failed to enable device\n");
|
|
return err;
|
|
}
|
|
|
|
pci_read_config_byte(pdev, REG_TSFSC, &tsfsc);
|
|
pci_read_config_dword(pdev, REG_TSTIMER, &tstimer);
|
|
if (tsfsc == 0x7F && tstimer == 0x07D30D40) {
|
|
dev_notice(&pdev->dev, "Sensor seems to be disabled\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
|
|
"intel5500", NULL,
|
|
i5500_temp_groups);
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
|
}
|
|
|
|
static struct pci_driver i5500_temp_driver = {
|
|
.name = "i5500_temp",
|
|
.id_table = i5500_temp_ids,
|
|
.probe = i5500_temp_probe,
|
|
};
|
|
|
|
module_pci_driver(i5500_temp_driver);
|
|
|
|
MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
|
|
MODULE_DESCRIPTION("Intel 5500/5520/X58 chipset thermal sensor driver");
|
|
MODULE_LICENSE("GPL");
|