forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
521 lines
15 KiB
521 lines
15 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/*************************************************************************** |
|
* Copyright (C) 2011-2012 Hans de Goede <[email protected]> * |
|
* * |
|
***************************************************************************/ |
|
|
|
#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 "sch5636" |
|
#define DEVNAME "theseus" /* We only support one model for now */ |
|
|
|
#define SCH5636_REG_FUJITSU_ID 0x780 |
|
#define SCH5636_REG_FUJITSU_REV 0x783 |
|
|
|
#define SCH5636_NO_INS 5 |
|
#define SCH5636_NO_TEMPS 16 |
|
#define SCH5636_NO_FANS 8 |
|
|
|
static const u16 SCH5636_REG_IN_VAL[SCH5636_NO_INS] = { |
|
0x22, 0x23, 0x24, 0x25, 0x189 }; |
|
static const u16 SCH5636_REG_IN_FACTORS[SCH5636_NO_INS] = { |
|
4400, 1500, 4000, 4400, 16000 }; |
|
static const char * const SCH5636_IN_LABELS[SCH5636_NO_INS] = { |
|
"3.3V", "VREF", "VBAT", "3.3AUX", "12V" }; |
|
|
|
static const u16 SCH5636_REG_TEMP_VAL[SCH5636_NO_TEMPS] = { |
|
0x2B, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x180, 0x181, |
|
0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C }; |
|
#define SCH5636_REG_TEMP_CTRL(i) (0x790 + (i)) |
|
#define SCH5636_TEMP_WORKING 0x01 |
|
#define SCH5636_TEMP_ALARM 0x02 |
|
#define SCH5636_TEMP_DEACTIVATED 0x80 |
|
|
|
static const u16 SCH5636_REG_FAN_VAL[SCH5636_NO_FANS] = { |
|
0x2C, 0x2E, 0x30, 0x32, 0x62, 0x64, 0x66, 0x68 }; |
|
#define SCH5636_REG_FAN_CTRL(i) (0x880 + (i)) |
|
/* FAULT in datasheet, but acts as an alarm */ |
|
#define SCH5636_FAN_ALARM 0x04 |
|
#define SCH5636_FAN_NOT_PRESENT 0x08 |
|
#define SCH5636_FAN_DEACTIVATED 0x80 |
|
|
|
|
|
struct sch5636_data { |
|
unsigned short addr; |
|
struct device *hwmon_dev; |
|
struct sch56xx_watchdog_data *watchdog; |
|
|
|
struct mutex update_lock; |
|
char valid; /* !=0 if following fields are valid */ |
|
unsigned long last_updated; /* In jiffies */ |
|
u8 in[SCH5636_NO_INS]; |
|
u8 temp_val[SCH5636_NO_TEMPS]; |
|
u8 temp_ctrl[SCH5636_NO_TEMPS]; |
|
u16 fan_val[SCH5636_NO_FANS]; |
|
u8 fan_ctrl[SCH5636_NO_FANS]; |
|
}; |
|
|
|
static struct sch5636_data *sch5636_update_device(struct device *dev) |
|
{ |
|
struct sch5636_data *data = dev_get_drvdata(dev); |
|
struct sch5636_data *ret = data; |
|
int i, val; |
|
|
|
mutex_lock(&data->update_lock); |
|
|
|
/* Cache the values for 1 second */ |
|
if (data->valid && !time_after(jiffies, data->last_updated + HZ)) |
|
goto abort; |
|
|
|
for (i = 0; i < SCH5636_NO_INS; i++) { |
|
val = sch56xx_read_virtual_reg(data->addr, |
|
SCH5636_REG_IN_VAL[i]); |
|
if (unlikely(val < 0)) { |
|
ret = ERR_PTR(val); |
|
goto abort; |
|
} |
|
data->in[i] = val; |
|
} |
|
|
|
for (i = 0; i < SCH5636_NO_TEMPS; i++) { |
|
if (data->temp_ctrl[i] & SCH5636_TEMP_DEACTIVATED) |
|
continue; |
|
|
|
val = sch56xx_read_virtual_reg(data->addr, |
|
SCH5636_REG_TEMP_VAL[i]); |
|
if (unlikely(val < 0)) { |
|
ret = ERR_PTR(val); |
|
goto abort; |
|
} |
|
data->temp_val[i] = val; |
|
|
|
val = sch56xx_read_virtual_reg(data->addr, |
|
SCH5636_REG_TEMP_CTRL(i)); |
|
if (unlikely(val < 0)) { |
|
ret = ERR_PTR(val); |
|
goto abort; |
|
} |
|
data->temp_ctrl[i] = val; |
|
/* Alarms need to be explicitly write-cleared */ |
|
if (val & SCH5636_TEMP_ALARM) { |
|
sch56xx_write_virtual_reg(data->addr, |
|
SCH5636_REG_TEMP_CTRL(i), val); |
|
} |
|
} |
|
|
|
for (i = 0; i < SCH5636_NO_FANS; i++) { |
|
if (data->fan_ctrl[i] & SCH5636_FAN_DEACTIVATED) |
|
continue; |
|
|
|
val = sch56xx_read_virtual_reg16(data->addr, |
|
SCH5636_REG_FAN_VAL[i]); |
|
if (unlikely(val < 0)) { |
|
ret = ERR_PTR(val); |
|
goto abort; |
|
} |
|
data->fan_val[i] = val; |
|
|
|
val = sch56xx_read_virtual_reg(data->addr, |
|
SCH5636_REG_FAN_CTRL(i)); |
|
if (unlikely(val < 0)) { |
|
ret = ERR_PTR(val); |
|
goto abort; |
|
} |
|
data->fan_ctrl[i] = val; |
|
/* Alarms need to be explicitly write-cleared */ |
|
if (val & SCH5636_FAN_ALARM) { |
|
sch56xx_write_virtual_reg(data->addr, |
|
SCH5636_REG_FAN_CTRL(i), val); |
|
} |
|
} |
|
|
|
data->last_updated = jiffies; |
|
data->valid = 1; |
|
abort: |
|
mutex_unlock(&data->update_lock); |
|
return ret; |
|
} |
|
|
|
static int reg_to_rpm(u16 reg) |
|
{ |
|
if (reg == 0) |
|
return -EIO; |
|
if (reg == 0xffff) |
|
return 0; |
|
|
|
return 5400540 / reg; |
|
} |
|
|
|
static ssize_t name_show(struct device *dev, struct device_attribute *devattr, |
|
char *buf) |
|
{ |
|
return snprintf(buf, PAGE_SIZE, "%s\n", DEVNAME); |
|
} |
|
|
|
static ssize_t in_value_show(struct device *dev, |
|
struct device_attribute *devattr, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
|
struct sch5636_data *data = sch5636_update_device(dev); |
|
int val; |
|
|
|
if (IS_ERR(data)) |
|
return PTR_ERR(data); |
|
|
|
val = DIV_ROUND_CLOSEST( |
|
data->in[attr->index] * SCH5636_REG_IN_FACTORS[attr->index], |
|
255); |
|
return snprintf(buf, PAGE_SIZE, "%d\n", val); |
|
} |
|
|
|
static ssize_t in_label_show(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", |
|
SCH5636_IN_LABELS[attr->index]); |
|
} |
|
|
|
static ssize_t temp_value_show(struct device *dev, |
|
struct device_attribute *devattr, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
|
struct sch5636_data *data = sch5636_update_device(dev); |
|
int val; |
|
|
|
if (IS_ERR(data)) |
|
return PTR_ERR(data); |
|
|
|
val = (data->temp_val[attr->index] - 64) * 1000; |
|
return snprintf(buf, PAGE_SIZE, "%d\n", val); |
|
} |
|
|
|
static ssize_t temp_fault_show(struct device *dev, |
|
struct device_attribute *devattr, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
|
struct sch5636_data *data = sch5636_update_device(dev); |
|
int val; |
|
|
|
if (IS_ERR(data)) |
|
return PTR_ERR(data); |
|
|
|
val = (data->temp_ctrl[attr->index] & SCH5636_TEMP_WORKING) ? 0 : 1; |
|
return snprintf(buf, PAGE_SIZE, "%d\n", val); |
|
} |
|
|
|
static ssize_t temp_alarm_show(struct device *dev, |
|
struct device_attribute *devattr, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
|
struct sch5636_data *data = sch5636_update_device(dev); |
|
int val; |
|
|
|
if (IS_ERR(data)) |
|
return PTR_ERR(data); |
|
|
|
val = (data->temp_ctrl[attr->index] & SCH5636_TEMP_ALARM) ? 1 : 0; |
|
return snprintf(buf, PAGE_SIZE, "%d\n", val); |
|
} |
|
|
|
static ssize_t fan_value_show(struct device *dev, |
|
struct device_attribute *devattr, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
|
struct sch5636_data *data = sch5636_update_device(dev); |
|
int val; |
|
|
|
if (IS_ERR(data)) |
|
return PTR_ERR(data); |
|
|
|
val = reg_to_rpm(data->fan_val[attr->index]); |
|
if (val < 0) |
|
return val; |
|
|
|
return snprintf(buf, PAGE_SIZE, "%d\n", val); |
|
} |
|
|
|
static ssize_t fan_fault_show(struct device *dev, |
|
struct device_attribute *devattr, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
|
struct sch5636_data *data = sch5636_update_device(dev); |
|
int val; |
|
|
|
if (IS_ERR(data)) |
|
return PTR_ERR(data); |
|
|
|
val = (data->fan_ctrl[attr->index] & SCH5636_FAN_NOT_PRESENT) ? 1 : 0; |
|
return snprintf(buf, PAGE_SIZE, "%d\n", val); |
|
} |
|
|
|
static ssize_t fan_alarm_show(struct device *dev, |
|
struct device_attribute *devattr, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); |
|
struct sch5636_data *data = sch5636_update_device(dev); |
|
int val; |
|
|
|
if (IS_ERR(data)) |
|
return PTR_ERR(data); |
|
|
|
val = (data->fan_ctrl[attr->index] & SCH5636_FAN_ALARM) ? 1 : 0; |
|
return snprintf(buf, PAGE_SIZE, "%d\n", val); |
|
} |
|
|
|
static struct sensor_device_attribute sch5636_attr[] = { |
|
SENSOR_ATTR_RO(name, name, 0), |
|
SENSOR_ATTR_RO(in0_input, in_value, 0), |
|
SENSOR_ATTR_RO(in0_label, in_label, 0), |
|
SENSOR_ATTR_RO(in1_input, in_value, 1), |
|
SENSOR_ATTR_RO(in1_label, in_label, 1), |
|
SENSOR_ATTR_RO(in2_input, in_value, 2), |
|
SENSOR_ATTR_RO(in2_label, in_label, 2), |
|
SENSOR_ATTR_RO(in3_input, in_value, 3), |
|
SENSOR_ATTR_RO(in3_label, in_label, 3), |
|
SENSOR_ATTR_RO(in4_input, in_value, 4), |
|
SENSOR_ATTR_RO(in4_label, in_label, 4), |
|
}; |
|
|
|
static struct sensor_device_attribute sch5636_temp_attr[] = { |
|
SENSOR_ATTR_RO(temp1_input, temp_value, 0), |
|
SENSOR_ATTR_RO(temp1_fault, temp_fault, 0), |
|
SENSOR_ATTR_RO(temp1_alarm, temp_alarm, 0), |
|
SENSOR_ATTR_RO(temp2_input, temp_value, 1), |
|
SENSOR_ATTR_RO(temp2_fault, temp_fault, 1), |
|
SENSOR_ATTR_RO(temp2_alarm, temp_alarm, 1), |
|
SENSOR_ATTR_RO(temp3_input, temp_value, 2), |
|
SENSOR_ATTR_RO(temp3_fault, temp_fault, 2), |
|
SENSOR_ATTR_RO(temp3_alarm, temp_alarm, 2), |
|
SENSOR_ATTR_RO(temp4_input, temp_value, 3), |
|
SENSOR_ATTR_RO(temp4_fault, temp_fault, 3), |
|
SENSOR_ATTR_RO(temp4_alarm, temp_alarm, 3), |
|
SENSOR_ATTR_RO(temp5_input, temp_value, 4), |
|
SENSOR_ATTR_RO(temp5_fault, temp_fault, 4), |
|
SENSOR_ATTR_RO(temp5_alarm, temp_alarm, 4), |
|
SENSOR_ATTR_RO(temp6_input, temp_value, 5), |
|
SENSOR_ATTR_RO(temp6_fault, temp_fault, 5), |
|
SENSOR_ATTR_RO(temp6_alarm, temp_alarm, 5), |
|
SENSOR_ATTR_RO(temp7_input, temp_value, 6), |
|
SENSOR_ATTR_RO(temp7_fault, temp_fault, 6), |
|
SENSOR_ATTR_RO(temp7_alarm, temp_alarm, 6), |
|
SENSOR_ATTR_RO(temp8_input, temp_value, 7), |
|
SENSOR_ATTR_RO(temp8_fault, temp_fault, 7), |
|
SENSOR_ATTR_RO(temp8_alarm, temp_alarm, 7), |
|
SENSOR_ATTR_RO(temp9_input, temp_value, 8), |
|
SENSOR_ATTR_RO(temp9_fault, temp_fault, 8), |
|
SENSOR_ATTR_RO(temp9_alarm, temp_alarm, 8), |
|
SENSOR_ATTR_RO(temp10_input, temp_value, 9), |
|
SENSOR_ATTR_RO(temp10_fault, temp_fault, 9), |
|
SENSOR_ATTR_RO(temp10_alarm, temp_alarm, 9), |
|
SENSOR_ATTR_RO(temp11_input, temp_value, 10), |
|
SENSOR_ATTR_RO(temp11_fault, temp_fault, 10), |
|
SENSOR_ATTR_RO(temp11_alarm, temp_alarm, 10), |
|
SENSOR_ATTR_RO(temp12_input, temp_value, 11), |
|
SENSOR_ATTR_RO(temp12_fault, temp_fault, 11), |
|
SENSOR_ATTR_RO(temp12_alarm, temp_alarm, 11), |
|
SENSOR_ATTR_RO(temp13_input, temp_value, 12), |
|
SENSOR_ATTR_RO(temp13_fault, temp_fault, 12), |
|
SENSOR_ATTR_RO(temp13_alarm, temp_alarm, 12), |
|
SENSOR_ATTR_RO(temp14_input, temp_value, 13), |
|
SENSOR_ATTR_RO(temp14_fault, temp_fault, 13), |
|
SENSOR_ATTR_RO(temp14_alarm, temp_alarm, 13), |
|
SENSOR_ATTR_RO(temp15_input, temp_value, 14), |
|
SENSOR_ATTR_RO(temp15_fault, temp_fault, 14), |
|
SENSOR_ATTR_RO(temp15_alarm, temp_alarm, 14), |
|
SENSOR_ATTR_RO(temp16_input, temp_value, 15), |
|
SENSOR_ATTR_RO(temp16_fault, temp_fault, 15), |
|
SENSOR_ATTR_RO(temp16_alarm, temp_alarm, 15), |
|
}; |
|
|
|
static struct sensor_device_attribute sch5636_fan_attr[] = { |
|
SENSOR_ATTR_RO(fan1_input, fan_value, 0), |
|
SENSOR_ATTR_RO(fan1_fault, fan_fault, 0), |
|
SENSOR_ATTR_RO(fan1_alarm, fan_alarm, 0), |
|
SENSOR_ATTR_RO(fan2_input, fan_value, 1), |
|
SENSOR_ATTR_RO(fan2_fault, fan_fault, 1), |
|
SENSOR_ATTR_RO(fan2_alarm, fan_alarm, 1), |
|
SENSOR_ATTR_RO(fan3_input, fan_value, 2), |
|
SENSOR_ATTR_RO(fan3_fault, fan_fault, 2), |
|
SENSOR_ATTR_RO(fan3_alarm, fan_alarm, 2), |
|
SENSOR_ATTR_RO(fan4_input, fan_value, 3), |
|
SENSOR_ATTR_RO(fan4_fault, fan_fault, 3), |
|
SENSOR_ATTR_RO(fan4_alarm, fan_alarm, 3), |
|
SENSOR_ATTR_RO(fan5_input, fan_value, 4), |
|
SENSOR_ATTR_RO(fan5_fault, fan_fault, 4), |
|
SENSOR_ATTR_RO(fan5_alarm, fan_alarm, 4), |
|
SENSOR_ATTR_RO(fan6_input, fan_value, 5), |
|
SENSOR_ATTR_RO(fan6_fault, fan_fault, 5), |
|
SENSOR_ATTR_RO(fan6_alarm, fan_alarm, 5), |
|
SENSOR_ATTR_RO(fan7_input, fan_value, 6), |
|
SENSOR_ATTR_RO(fan7_fault, fan_fault, 6), |
|
SENSOR_ATTR_RO(fan7_alarm, fan_alarm, 6), |
|
SENSOR_ATTR_RO(fan8_input, fan_value, 7), |
|
SENSOR_ATTR_RO(fan8_fault, fan_fault, 7), |
|
SENSOR_ATTR_RO(fan8_alarm, fan_alarm, 7), |
|
}; |
|
|
|
static int sch5636_remove(struct platform_device *pdev) |
|
{ |
|
struct sch5636_data *data = platform_get_drvdata(pdev); |
|
int i; |
|
|
|
if (data->watchdog) |
|
sch56xx_watchdog_unregister(data->watchdog); |
|
|
|
if (data->hwmon_dev) |
|
hwmon_device_unregister(data->hwmon_dev); |
|
|
|
for (i = 0; i < ARRAY_SIZE(sch5636_attr); i++) |
|
device_remove_file(&pdev->dev, &sch5636_attr[i].dev_attr); |
|
|
|
for (i = 0; i < SCH5636_NO_TEMPS * 3; i++) |
|
device_remove_file(&pdev->dev, |
|
&sch5636_temp_attr[i].dev_attr); |
|
|
|
for (i = 0; i < SCH5636_NO_FANS * 3; i++) |
|
device_remove_file(&pdev->dev, |
|
&sch5636_fan_attr[i].dev_attr); |
|
|
|
return 0; |
|
} |
|
|
|
static int sch5636_probe(struct platform_device *pdev) |
|
{ |
|
struct sch5636_data *data; |
|
int i, err, val, revision[2]; |
|
char id[4]; |
|
|
|
data = devm_kzalloc(&pdev->dev, sizeof(struct sch5636_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); |
|
|
|
for (i = 0; i < 3; i++) { |
|
val = sch56xx_read_virtual_reg(data->addr, |
|
SCH5636_REG_FUJITSU_ID + i); |
|
if (val < 0) { |
|
pr_err("Could not read Fujitsu id byte at %#x\n", |
|
SCH5636_REG_FUJITSU_ID + i); |
|
err = val; |
|
goto error; |
|
} |
|
id[i] = val; |
|
} |
|
id[i] = '\0'; |
|
|
|
if (strcmp(id, "THS")) { |
|
pr_err("Unknown Fujitsu id: %02x%02x%02x\n", |
|
id[0], id[1], id[2]); |
|
err = -ENODEV; |
|
goto error; |
|
} |
|
|
|
for (i = 0; i < 2; i++) { |
|
val = sch56xx_read_virtual_reg(data->addr, |
|
SCH5636_REG_FUJITSU_REV + i); |
|
if (val < 0) { |
|
err = val; |
|
goto error; |
|
} |
|
revision[i] = val; |
|
} |
|
pr_info("Found %s chip at %#hx, revision: %d.%02d\n", DEVNAME, |
|
data->addr, revision[0], revision[1]); |
|
|
|
/* Read all temp + fan ctrl registers to determine which are active */ |
|
for (i = 0; i < SCH5636_NO_TEMPS; i++) { |
|
val = sch56xx_read_virtual_reg(data->addr, |
|
SCH5636_REG_TEMP_CTRL(i)); |
|
if (unlikely(val < 0)) { |
|
err = val; |
|
goto error; |
|
} |
|
data->temp_ctrl[i] = val; |
|
} |
|
|
|
for (i = 0; i < SCH5636_NO_FANS; i++) { |
|
val = sch56xx_read_virtual_reg(data->addr, |
|
SCH5636_REG_FAN_CTRL(i)); |
|
if (unlikely(val < 0)) { |
|
err = val; |
|
goto error; |
|
} |
|
data->fan_ctrl[i] = val; |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(sch5636_attr); i++) { |
|
err = device_create_file(&pdev->dev, |
|
&sch5636_attr[i].dev_attr); |
|
if (err) |
|
goto error; |
|
} |
|
|
|
for (i = 0; i < (SCH5636_NO_TEMPS * 3); i++) { |
|
if (data->temp_ctrl[i/3] & SCH5636_TEMP_DEACTIVATED) |
|
continue; |
|
|
|
err = device_create_file(&pdev->dev, |
|
&sch5636_temp_attr[i].dev_attr); |
|
if (err) |
|
goto error; |
|
} |
|
|
|
for (i = 0; i < (SCH5636_NO_FANS * 3); i++) { |
|
if (data->fan_ctrl[i/3] & SCH5636_FAN_DEACTIVATED) |
|
continue; |
|
|
|
err = device_create_file(&pdev->dev, |
|
&sch5636_fan_attr[i].dev_attr); |
|
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, |
|
(revision[0] << 8) | revision[1], |
|
&data->update_lock, 0); |
|
|
|
return 0; |
|
|
|
error: |
|
sch5636_remove(pdev); |
|
return err; |
|
} |
|
|
|
static struct platform_driver sch5636_driver = { |
|
.driver = { |
|
.name = DRVNAME, |
|
}, |
|
.probe = sch5636_probe, |
|
.remove = sch5636_remove, |
|
}; |
|
|
|
module_platform_driver(sch5636_driver); |
|
|
|
MODULE_DESCRIPTION("SMSC SCH5636 Hardware Monitoring Driver"); |
|
MODULE_AUTHOR("Hans de Goede <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|