mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-06 02:24:14 +08:00
fb551405c0
Convert sch56xx drivers to the generic watchdog core. Note this patch depends on the "watchdog: Add multiple device support" patch from Alan Cox. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
607 lines
19 KiB
C
607 lines
19 KiB
C
/***************************************************************************
|
|
* Copyright (C) 2010-2012 Hans de Goede <hdegoede@redhat.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; 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. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the *
|
|
* Free Software Foundation, Inc., *
|
|
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
|
|
***************************************************************************/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/hwmon.h>
|
|
#include <linux/hwmon-sysfs.h>
|
|
#include <linux/err.h>
|
|
#include <linux/mutex.h>
|
|
#include "sch56xx-common.h"
|
|
|
|
#define DRVNAME "sch5627"
|
|
#define DEVNAME DRVNAME /* We only support one model */
|
|
|
|
#define SCH5627_HWMON_ID 0xa5
|
|
#define SCH5627_COMPANY_ID 0x5c
|
|
#define SCH5627_PRIMARY_ID 0xa0
|
|
|
|
#define SCH5627_REG_BUILD_CODE 0x39
|
|
#define SCH5627_REG_BUILD_ID 0x3a
|
|
#define SCH5627_REG_HWMON_ID 0x3c
|
|
#define SCH5627_REG_HWMON_REV 0x3d
|
|
#define SCH5627_REG_COMPANY_ID 0x3e
|
|
#define SCH5627_REG_PRIMARY_ID 0x3f
|
|
#define SCH5627_REG_CTRL 0x40
|
|
|
|
#define SCH5627_NO_TEMPS 8
|
|
#define SCH5627_NO_FANS 4
|
|
#define SCH5627_NO_IN 5
|
|
|
|
static const u16 SCH5627_REG_TEMP_MSB[SCH5627_NO_TEMPS] = {
|
|
0x2B, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x180, 0x181 };
|
|
static const u16 SCH5627_REG_TEMP_LSN[SCH5627_NO_TEMPS] = {
|
|
0xE2, 0xE1, 0xE1, 0xE5, 0xE5, 0xE6, 0x182, 0x182 };
|
|
static const u16 SCH5627_REG_TEMP_HIGH_NIBBLE[SCH5627_NO_TEMPS] = {
|
|
0, 0, 1, 1, 0, 0, 0, 1 };
|
|
static const u16 SCH5627_REG_TEMP_HIGH[SCH5627_NO_TEMPS] = {
|
|
0x61, 0x57, 0x59, 0x5B, 0x5D, 0x5F, 0x184, 0x186 };
|
|
static const u16 SCH5627_REG_TEMP_ABS[SCH5627_NO_TEMPS] = {
|
|
0x9B, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x1A8, 0x1A9 };
|
|
|
|
static const u16 SCH5627_REG_FAN[SCH5627_NO_FANS] = {
|
|
0x2C, 0x2E, 0x30, 0x32 };
|
|
static const u16 SCH5627_REG_FAN_MIN[SCH5627_NO_FANS] = {
|
|
0x62, 0x64, 0x66, 0x68 };
|
|
|
|
static const u16 SCH5627_REG_IN_MSB[SCH5627_NO_IN] = {
|
|
0x22, 0x23, 0x24, 0x25, 0x189 };
|
|
static const u16 SCH5627_REG_IN_LSN[SCH5627_NO_IN] = {
|
|
0xE4, 0xE4, 0xE3, 0xE3, 0x18A };
|
|
static const u16 SCH5627_REG_IN_HIGH_NIBBLE[SCH5627_NO_IN] = {
|
|
1, 0, 1, 0, 1 };
|
|
static const u16 SCH5627_REG_IN_FACTOR[SCH5627_NO_IN] = {
|
|
10745, 3660, 9765, 10745, 3660 };
|
|
static const char * const SCH5627_IN_LABELS[SCH5627_NO_IN] = {
|
|
"VCC", "VTT", "VBAT", "VTR", "V_IN" };
|
|
|
|
struct sch5627_data {
|
|
unsigned short addr;
|
|
struct device *hwmon_dev;
|
|
struct sch56xx_watchdog_data *watchdog;
|
|
u8 control;
|
|
u8 temp_max[SCH5627_NO_TEMPS];
|
|
u8 temp_crit[SCH5627_NO_TEMPS];
|
|
u16 fan_min[SCH5627_NO_FANS];
|
|
|
|
struct mutex update_lock;
|
|
unsigned long last_battery; /* In jiffies */
|
|
char valid; /* !=0 if following fields are valid */
|
|
unsigned long last_updated; /* In jiffies */
|
|
u16 temp[SCH5627_NO_TEMPS];
|
|
u16 fan[SCH5627_NO_FANS];
|
|
u16 in[SCH5627_NO_IN];
|
|
};
|
|
|
|
static struct sch5627_data *sch5627_update_device(struct device *dev)
|
|
{
|
|
struct sch5627_data *data = dev_get_drvdata(dev);
|
|
struct sch5627_data *ret = data;
|
|
int i, val;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
/* Trigger a Vbat voltage measurement every 5 minutes */
|
|
if (time_after(jiffies, data->last_battery + 300 * HZ)) {
|
|
sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL,
|
|
data->control | 0x10);
|
|
data->last_battery = jiffies;
|
|
}
|
|
|
|
/* Cache the values for 1 second */
|
|
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
|
|
for (i = 0; i < SCH5627_NO_TEMPS; i++) {
|
|
val = sch56xx_read_virtual_reg12(data->addr,
|
|
SCH5627_REG_TEMP_MSB[i],
|
|
SCH5627_REG_TEMP_LSN[i],
|
|
SCH5627_REG_TEMP_HIGH_NIBBLE[i]);
|
|
if (unlikely(val < 0)) {
|
|
ret = ERR_PTR(val);
|
|
goto abort;
|
|
}
|
|
data->temp[i] = val;
|
|
}
|
|
|
|
for (i = 0; i < SCH5627_NO_FANS; i++) {
|
|
val = sch56xx_read_virtual_reg16(data->addr,
|
|
SCH5627_REG_FAN[i]);
|
|
if (unlikely(val < 0)) {
|
|
ret = ERR_PTR(val);
|
|
goto abort;
|
|
}
|
|
data->fan[i] = val;
|
|
}
|
|
|
|
for (i = 0; i < SCH5627_NO_IN; i++) {
|
|
val = sch56xx_read_virtual_reg12(data->addr,
|
|
SCH5627_REG_IN_MSB[i],
|
|
SCH5627_REG_IN_LSN[i],
|
|
SCH5627_REG_IN_HIGH_NIBBLE[i]);
|
|
if (unlikely(val < 0)) {
|
|
ret = ERR_PTR(val);
|
|
goto abort;
|
|
}
|
|
data->in[i] = val;
|
|
}
|
|
|
|
data->last_updated = jiffies;
|
|
data->valid = 1;
|
|
}
|
|
abort:
|
|
mutex_unlock(&data->update_lock);
|
|
return ret;
|
|
}
|
|
|
|
static int __devinit sch5627_read_limits(struct sch5627_data *data)
|
|
{
|
|
int i, val;
|
|
|
|
for (i = 0; i < SCH5627_NO_TEMPS; i++) {
|
|
/*
|
|
* Note what SMSC calls ABS, is what lm_sensors calls max
|
|
* (aka high), and HIGH is what lm_sensors calls crit.
|
|
*/
|
|
val = sch56xx_read_virtual_reg(data->addr,
|
|
SCH5627_REG_TEMP_ABS[i]);
|
|
if (val < 0)
|
|
return val;
|
|
data->temp_max[i] = val;
|
|
|
|
val = sch56xx_read_virtual_reg(data->addr,
|
|
SCH5627_REG_TEMP_HIGH[i]);
|
|
if (val < 0)
|
|
return val;
|
|
data->temp_crit[i] = val;
|
|
}
|
|
for (i = 0; i < SCH5627_NO_FANS; i++) {
|
|
val = sch56xx_read_virtual_reg16(data->addr,
|
|
SCH5627_REG_FAN_MIN[i]);
|
|
if (val < 0)
|
|
return val;
|
|
data->fan_min[i] = val;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int reg_to_temp(u16 reg)
|
|
{
|
|
return (reg * 625) / 10 - 64000;
|
|
}
|
|
|
|
static int reg_to_temp_limit(u8 reg)
|
|
{
|
|
return (reg - 64) * 1000;
|
|
}
|
|
|
|
static int reg_to_rpm(u16 reg)
|
|
{
|
|
if (reg == 0)
|
|
return -EIO;
|
|
if (reg == 0xffff)
|
|
return 0;
|
|
|
|
return 5400540 / reg;
|
|
}
|
|
|
|
static ssize_t show_name(struct device *dev, struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%s\n", DEVNAME);
|
|
}
|
|
|
|
static ssize_t show_temp(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = sch5627_update_device(dev);
|
|
int val;
|
|
|
|
if (IS_ERR(data))
|
|
return PTR_ERR(data);
|
|
|
|
val = reg_to_temp(data->temp[attr->index]);
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static ssize_t show_temp_fault(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = sch5627_update_device(dev);
|
|
|
|
if (IS_ERR(data))
|
|
return PTR_ERR(data);
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", data->temp[attr->index] == 0);
|
|
}
|
|
|
|
static ssize_t show_temp_max(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = dev_get_drvdata(dev);
|
|
int val;
|
|
|
|
val = reg_to_temp_limit(data->temp_max[attr->index]);
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static ssize_t show_temp_crit(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = dev_get_drvdata(dev);
|
|
int val;
|
|
|
|
val = reg_to_temp_limit(data->temp_crit[attr->index]);
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static ssize_t show_fan(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = sch5627_update_device(dev);
|
|
int val;
|
|
|
|
if (IS_ERR(data))
|
|
return PTR_ERR(data);
|
|
|
|
val = reg_to_rpm(data->fan[attr->index]);
|
|
if (val < 0)
|
|
return val;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static ssize_t show_fan_fault(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = sch5627_update_device(dev);
|
|
|
|
if (IS_ERR(data))
|
|
return PTR_ERR(data);
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n",
|
|
data->fan[attr->index] == 0xffff);
|
|
}
|
|
|
|
static ssize_t show_fan_min(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = dev_get_drvdata(dev);
|
|
int val = reg_to_rpm(data->fan_min[attr->index]);
|
|
if (val < 0)
|
|
return val;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static ssize_t show_in(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct sch5627_data *data = sch5627_update_device(dev);
|
|
int val;
|
|
|
|
if (IS_ERR(data))
|
|
return PTR_ERR(data);
|
|
|
|
val = DIV_ROUND_CLOSEST(
|
|
data->in[attr->index] * SCH5627_REG_IN_FACTOR[attr->index],
|
|
10000);
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
}
|
|
|
|
static ssize_t show_in_label(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%s\n",
|
|
SCH5627_IN_LABELS[attr->index]);
|
|
}
|
|
|
|
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
|
|
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7);
|
|
static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_fault, S_IRUGO, show_temp_fault, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_fault, S_IRUGO, show_temp_fault, NULL, 7);
|
|
static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_max, S_IRUGO, show_temp_max, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_max, S_IRUGO, show_temp_max, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_max, S_IRUGO, show_temp_max, NULL, 7);
|
|
static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_crit, S_IRUGO, show_temp_crit, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_crit, S_IRUGO, show_temp_crit, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_crit, S_IRUGO, show_temp_crit, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_crit, S_IRUGO, show_temp_crit, NULL, 7);
|
|
|
|
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_fan_fault, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, show_fan_fault, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, show_fan_fault, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, show_fan_min, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO, show_fan_min, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO, show_fan_min, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(fan4_min, S_IRUGO, show_fan_min, NULL, 3);
|
|
|
|
static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, show_in_label, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(in1_label, S_IRUGO, show_in_label, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(in2_label, S_IRUGO, show_in_label, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_in_label, NULL, 3);
|
|
|
|
static struct attribute *sch5627_attributes[] = {
|
|
&dev_attr_name.attr,
|
|
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_crit.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_fault.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_fault.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_fault.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_fault.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in0_input.dev_attr.attr,
|
|
&sensor_dev_attr_in1_input.dev_attr.attr,
|
|
&sensor_dev_attr_in2_input.dev_attr.attr,
|
|
&sensor_dev_attr_in3_input.dev_attr.attr,
|
|
&sensor_dev_attr_in4_input.dev_attr.attr,
|
|
&sensor_dev_attr_in0_label.dev_attr.attr,
|
|
&sensor_dev_attr_in1_label.dev_attr.attr,
|
|
&sensor_dev_attr_in2_label.dev_attr.attr,
|
|
&sensor_dev_attr_in3_label.dev_attr.attr,
|
|
/* No in4_label as in4 is a generic input pin */
|
|
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group sch5627_group = {
|
|
.attrs = sch5627_attributes,
|
|
};
|
|
|
|
static int sch5627_remove(struct platform_device *pdev)
|
|
{
|
|
struct sch5627_data *data = platform_get_drvdata(pdev);
|
|
|
|
if (data->watchdog)
|
|
sch56xx_watchdog_unregister(data->watchdog);
|
|
|
|
if (data->hwmon_dev)
|
|
hwmon_device_unregister(data->hwmon_dev);
|
|
|
|
sysfs_remove_group(&pdev->dev.kobj, &sch5627_group);
|
|
platform_set_drvdata(pdev, NULL);
|
|
kfree(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit sch5627_probe(struct platform_device *pdev)
|
|
{
|
|
struct sch5627_data *data;
|
|
int err, build_code, build_id, hwmon_rev, val;
|
|
|
|
data = kzalloc(sizeof(struct sch5627_data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
|
|
mutex_init(&data->update_lock);
|
|
platform_set_drvdata(pdev, data);
|
|
|
|
val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_HWMON_ID);
|
|
if (val < 0) {
|
|
err = val;
|
|
goto error;
|
|
}
|
|
if (val != SCH5627_HWMON_ID) {
|
|
pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "hwmon",
|
|
val, SCH5627_HWMON_ID);
|
|
err = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_COMPANY_ID);
|
|
if (val < 0) {
|
|
err = val;
|
|
goto error;
|
|
}
|
|
if (val != SCH5627_COMPANY_ID) {
|
|
pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "company",
|
|
val, SCH5627_COMPANY_ID);
|
|
err = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_PRIMARY_ID);
|
|
if (val < 0) {
|
|
err = val;
|
|
goto error;
|
|
}
|
|
if (val != SCH5627_PRIMARY_ID) {
|
|
pr_err("invalid %s id: 0x%02X (expected 0x%02X)\n", "primary",
|
|
val, SCH5627_PRIMARY_ID);
|
|
err = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
build_code = sch56xx_read_virtual_reg(data->addr,
|
|
SCH5627_REG_BUILD_CODE);
|
|
if (build_code < 0) {
|
|
err = build_code;
|
|
goto error;
|
|
}
|
|
|
|
build_id = sch56xx_read_virtual_reg16(data->addr,
|
|
SCH5627_REG_BUILD_ID);
|
|
if (build_id < 0) {
|
|
err = build_id;
|
|
goto error;
|
|
}
|
|
|
|
hwmon_rev = sch56xx_read_virtual_reg(data->addr,
|
|
SCH5627_REG_HWMON_REV);
|
|
if (hwmon_rev < 0) {
|
|
err = hwmon_rev;
|
|
goto error;
|
|
}
|
|
|
|
val = sch56xx_read_virtual_reg(data->addr, SCH5627_REG_CTRL);
|
|
if (val < 0) {
|
|
err = val;
|
|
goto error;
|
|
}
|
|
data->control = val;
|
|
if (!(data->control & 0x01)) {
|
|
pr_err("hardware monitoring not enabled\n");
|
|
err = -ENODEV;
|
|
goto error;
|
|
}
|
|
/* Trigger a Vbat voltage measurement, so that we get a valid reading
|
|
the first time we read Vbat */
|
|
sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL,
|
|
data->control | 0x10);
|
|
data->last_battery = jiffies;
|
|
|
|
/*
|
|
* Read limits, we do this only once as reading a register on
|
|
* the sch5627 is quite expensive (and they don't change).
|
|
*/
|
|
err = sch5627_read_limits(data);
|
|
if (err)
|
|
goto error;
|
|
|
|
pr_info("found %s chip at %#hx\n", DEVNAME, data->addr);
|
|
pr_info("firmware build: code 0x%02X, id 0x%04X, hwmon: rev 0x%02X\n",
|
|
build_code, build_id, hwmon_rev);
|
|
|
|
/* Register sysfs interface files */
|
|
err = sysfs_create_group(&pdev->dev.kobj, &sch5627_group);
|
|
if (err)
|
|
goto error;
|
|
|
|
data->hwmon_dev = hwmon_device_register(&pdev->dev);
|
|
if (IS_ERR(data->hwmon_dev)) {
|
|
err = PTR_ERR(data->hwmon_dev);
|
|
data->hwmon_dev = NULL;
|
|
goto error;
|
|
}
|
|
|
|
/* Note failing to register the watchdog is not a fatal error */
|
|
data->watchdog = sch56xx_watchdog_register(&pdev->dev, data->addr,
|
|
(build_code << 24) | (build_id << 8) | hwmon_rev,
|
|
&data->update_lock, 1);
|
|
|
|
return 0;
|
|
|
|
error:
|
|
sch5627_remove(pdev);
|
|
return err;
|
|
}
|
|
|
|
static struct platform_driver sch5627_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = DRVNAME,
|
|
},
|
|
.probe = sch5627_probe,
|
|
.remove = sch5627_remove,
|
|
};
|
|
|
|
module_platform_driver(sch5627_driver);
|
|
|
|
MODULE_DESCRIPTION("SMSC SCH5627 Hardware Monitoring Driver");
|
|
MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
|
|
MODULE_LICENSE("GPL");
|