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imanager-hwmon.c
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/*
* Advantech iManager Hardware Monitoring driver
* Partially derived from nct6775
*
* Copyright (C) 2016-2017 Advantech Co., Ltd.
* Author: Richard Vidal-Dorsch <[email protected]>
*
* 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/bitops.h>
#include <linux/byteorder/generic.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include "compat.h"
#include "imanager.h"
/* Voltage computation (10-bit ADC, 0..3V input) */
#define SCALE_IN 2933 /* (3000mV / (2^10 - 1)) * 1000 */
#define HWM_STATUS_UNDEFINED_ITEM 2UL
#define HWM_STATUS_UNDEFINED_DID 3UL
#define HWM_STATUS_UNDEFINED_HWPIN 4UL
/* iManager EC FW pwm[1-*]_mode values are switched */
enum imanager_pwm_mode { CTRL_PWM, CTRL_RPM };
/* EC FW defines pwm_enable mode 'full speed' besides mode 'off' */
enum imanager_pwm_enable { MODE_OFF, MODE_FULL, MODE_MANUAL, MODE_AUTO };
/*
* iManager FAN device defs
*/
struct fan_dev_config {
u8 did,
hwpin,
tachoid,
status,
control,
temp_max,
temp_min,
temp_stop,
pwm_max,
pwm_min;
u16 rpm_max;
u16 rpm_min;
u8 debounce; /* debounce time, not used */
u8 temp; /* Current Thermal Zone Temperature */
u16 rpm_target; /* RPM Target Speed, not used */
} __attribute__((__packed__));
struct fan_alert_limit {
u16 min,
max;
} __attribute__((__packed__));
struct fan_status {
u32 sysctl : 1, /* System Control flag */
tacho : 1, /* FAN tacho source defined */
pulse : 1, /* FAN pulse type defined */
thermal : 1, /* Thermal zone init */
i2clink : 1, /* I2C protocol fail flag (thermal sensor) */
dnc : 1, /* don't care */
mode : 2; /* FAN Control mode */
};
/**
* FAN Control bit field
* enable: 0:Disabled, 1:Enabled
* type: 0:PWM, 1:RPM
* pulse: 0:Undefined 1:2 Pulses 2:4 Pulses
* tacho: 1:CPU FAN, 2:SYS FAN1, 3:SYS FAN2
* mode: 0:Off, 1:Full, 2:Manual, 3:Auto
*/
struct fan_ctrl {
u32 enable : 1, /* SmartFAN control on/off */
type : 1, /* FAN control type [0, 1] PWM/RPM */
pulse : 2, /* FAN pulse [0..2] */
tacho : 2, /* FAN Tacho Input [1..3] */
mode : 2; /* off/full/manual/auto */
};
/* Default Voltage Sensors */
struct imanager_hwmon_adc {
bool valid; /* if set, below values are valid */
unsigned int value;
unsigned int min;
unsigned int max;
unsigned int average;
unsigned int lowest;
unsigned int highest;
};
struct imanager_hwmon_smartfan {
bool valid; /* if set, below values are valid */
unsigned int pwm;
unsigned int speed;
bool speed_min_alarm;
bool speed_max_alarm;
struct fan_dev_config cfg;
};
struct imanager_hwmon_data {
struct imanager_device_data *imgr;
const struct attribute_group *groups[3];
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
struct device *hwmon_device;
#endif
unsigned long samples;
unsigned long last_updated;
struct imanager_hwmon_adc adc[EC_MAX_ADC_NUM];
struct imanager_hwmon_smartfan fan[EC_MAX_FAN_NUM];
};
static int
imanager_hwmon_read_fan_config(struct imanager_device_data *imgr, int num,
struct imanager_hwmon_smartfan *fan)
{
struct imanager_ec_message msg = {
.rlen = EC_F_HWMON_MSG,
.wlen = 0,
.param = num,
.cmd = EC_CMD_FAN_CTL_RD,
.data = (u8 *)&fan->cfg,
};
int ret;
ret = imanager_read(imgr, &msg);
if (ret)
return ret;
return fan->cfg.did ? 0 : -ENODEV;
}
static int
imanager_hwmon_write_fan_config(struct imanager_device_data *imgr, int num,
struct imanager_hwmon_smartfan *fan)
{
struct imanager_ec_message msg = {
.rlen = 0,
.wlen = sizeof(fan->cfg),
.param = num,
.cmd = EC_CMD_FAN_CTL_WR,
.data = (u8 *)&fan->cfg,
};
int err;
err = imanager_write(imgr, &msg);
if (err < 0) {
return err;
} else if (err) {
switch (err) {
case HWM_STATUS_UNDEFINED_ITEM:
case HWM_STATUS_UNDEFINED_DID:
case HWM_STATUS_UNDEFINED_HWPIN:
return -ENODEV;
default:
return -EINVAL;
}
}
return 0;
}
/**
* FAN max/min alert bits are stored as bit pairs in a 8-bit register.
* FAN0~2: 2:{max2, min2}, 1:{max1, min1}, 0:{max0, min0}
*/
#define IS_FAN_ALERT_MIN(fan_num, var) test_bit(BIT((fan_num) << 1), var)
#define IS_FAN_ALERT_MAX(fan_num, var) test_bit(BIT(((fan_num) << 1) + 1), var)
static int
imanager_hwmon_read_fan_alert(struct imanager_device_data *imgr, int num,
struct imanager_hwmon_smartfan *fan)
{
const ulong alert_flags = 0;
int ret;
ret = imanager_mem_read(imgr, EC_RAM_ACPI, EC_OFFSET_FAN_ALERT,
(u8 *)&alert_flags, sizeof(u8));
if (ret < 0)
return ret;
fan->speed_min_alarm = IS_FAN_ALERT_MIN(num, &alert_flags);
fan->speed_max_alarm = IS_FAN_ALERT_MAX(num, &alert_flags);
return 0;
}
static int
imanager_hwmon_write_fan_alert(struct imanager_device_data *imgr, int fnum,
struct imanager_hwmon_smartfan *fan)
{
struct fan_alert_limit limits[EC_MAX_FAN_NUM];
struct fan_alert_limit *limit = &limits[fnum];
int ret;
ret = imanager_mem_read(imgr, EC_RAM_ACPI, EC_OFFSET_FAN_ALERT_LIMIT,
(u8 *)limits, sizeof(limits));
if (ret < 0)
return ret;
limit->min = fan->cfg.rpm_min;
limit->max = fan->cfg.rpm_max;
return imanager_mem_write(imgr, EC_RAM_ACPI, EC_OFFSET_FAN_ALERT_LIMIT,
(u8 *)limits, sizeof(limits));
}
static void
imanager_hwmon_read_adc(struct imanager_device_data *imgr, int num,
struct imanager_hwmon_adc *adc)
{
struct imanager_device_attribute *attr = imgr->ec.hwmon.adc.attr[num];
int ret;
adc->valid = false;
ret = imanager_read16(imgr, EC_CMD_HWP_RD, attr->did);
if (ret < 0)
return;
adc->value = ret * attr->ecdev->scale;
adc->valid = true;
}
static void
imanager_hwmon_read_fan(struct imanager_device_data *imgr, int num,
struct imanager_hwmon_smartfan *fan)
{
struct imanager_device_attribute *attr = imgr->ec.hwmon.adc.attr[num];
int ret;
fan->valid = false;
ret = imanager_hwmon_read_fan_config(imgr, num, fan);
if (ret < 0)
return;
ret = imanager_hwmon_read_fan_alert(imgr, num, fan);
if (ret < 0)
return;
ret = imanager_read16(imgr, EC_CMD_HWP_RD, fan->cfg.tachoid);
if (ret < 0)
return;
fan->speed = ret;
ret = imanager_read8(imgr, EC_CMD_HWP_RD, attr->did);
if (ret < 0)
return;
fan->pwm = ret;
fan->valid = true;
}
static inline uint in_from_reg(u16 val)
{
return clamp_val(DIV_ROUND_CLOSEST(val * SCALE_IN, 1000), 0, 65535);
}
static inline u16 in_to_reg(uint val)
{
return clamp_val(DIV_ROUND_CLOSEST(val * 1000, SCALE_IN), 0, 65535);
}
static struct imanager_hwmon_data *
imanager_hwmon_update_device(struct device *dev)
{
struct imanager_hwmon_data *data = dev_get_drvdata(dev);
struct imanager_device_data *imgr = data->imgr;
struct imanager_hwmon_device *hwmon = &imgr->ec.hwmon;
int i;
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)) {
/* Measured voltages */
for (i = 0; i < hwmon->adc.num; i++)
if (hwmon->adc.attr[i])
imanager_hwmon_read_adc(imgr, i, &data->adc[i]);
/* Measured fan speeds */
for (i = 0; i < hwmon->fan.num; i++)
if (hwmon->fan.attr[i])
imanager_hwmon_read_fan(imgr, i, &data->fan[i]);
data->last_updated = jiffies;
}
return data;
}
static ssize_t
show_in(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
return sprintf(buf, "%u\n", in_from_reg(data->adc[nr].value));
}
static ssize_t
show_in_min(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
return sprintf(buf, "%u\n", in_from_reg(data->adc[nr].min));
}
static ssize_t
show_in_max(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
return sprintf(buf, "%u\n", in_from_reg(data->adc[nr].max));
}
static ssize_t
store_in_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
data->adc[nr].min = in_to_reg(val);
return count;
}
static ssize_t
store_in_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
data->adc[nr].max = in_to_reg(val);
return count;
}
static ssize_t
show_in_alarm(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
struct imanager_hwmon_adc *adc = &data->adc[nr];
int val = 0;
if (adc->valid)
val = (adc->value < adc->min) || (adc->value > adc->max);
return sprintf(buf, "%u\n", val);
}
static ssize_t
show_in_average(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
struct imanager_hwmon_adc *adc = &data->adc[nr];
if (adc->average) {
adc->average = DIV_ROUND_CLOSEST(adc->average * data->samples +
adc->value, ++data->samples);
} else {
adc->average = adc->value;
data->samples = 1;
}
return sprintf(buf, "%u\n", in_from_reg(adc->average));
}
static ssize_t
show_in_lowest(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
struct imanager_hwmon_adc *adc = &data->adc[nr];
if (!adc->lowest || (adc->value < adc->lowest))
adc->lowest = adc->value;
return sprintf(buf, "%u\n", in_from_reg(adc->lowest));
}
static ssize_t
show_in_highest(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
struct imanager_hwmon_adc *adc = &data->adc[nr];
if (!adc->highest || (adc->value > adc->highest))
adc->highest = adc->value;
return sprintf(buf, "%u\n", in_from_reg(adc->highest));
}
static ssize_t
store_in_reset_history(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index;
unsigned long reset;
int err;
err = kstrtoul(buf, 10, &reset);
if (err < 0)
return err;
if (reset) {
data->adc[nr].lowest = 0;
data->adc[nr].highest = 0;
data->adc[nr].average = 0;
data->samples = 0;
}
return count;
}
static ssize_t
show_temp(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
return sprintf(buf, "%u\n", data->fan[nr].cfg.temp * 1000);
}
static ssize_t
show_fan_in(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
return sprintf(buf, "%u\n", fan->valid ? fan->speed : 0);
}
static inline int check_fan_alarm(const struct imanager_hwmon_smartfan *fan)
{
int rpm_min = cpu_to_be16(fan->cfg.rpm_min);
int rpm_max = cpu_to_be16(fan->cfg.rpm_max);
return !fan->valid || fan->speed_min_alarm || fan->speed_max_alarm ||
(!fan->speed && fan->pwm) || (fan->speed < rpm_min) ||
(fan->speed > rpm_max);
}
static ssize_t
show_fan_alarm(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
bool is_alarm = (ctrl->mode == MODE_AUTO) ? 0 : check_fan_alarm(fan);
return sprintf(buf, "%u\n", is_alarm);
}
static ssize_t
show_fan_min(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
int rpm_min = cpu_to_be16(data->fan[nr].cfg.rpm_min);
return sprintf(buf, "%u\n", rpm_min);
}
static ssize_t
show_fan_max(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
int rpm_max = cpu_to_be16(data->fan[nr].cfg.rpm_max);
return sprintf(buf, "%u\n", rpm_max);
}
static ssize_t
store_fan_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_device_data *imgr = data->imgr;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
unsigned long val = 0;
int err;
if (ctrl->mode != MODE_AUTO)
return count;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
fan->cfg.rpm_min = cpu_to_be16(val);
imanager_hwmon_write_fan_config(imgr, nr, fan);
return count;
}
static ssize_t
store_fan_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_device_data *imgr = data->imgr;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
unsigned long val = 0;
int err;
if (ctrl->mode != MODE_AUTO)
return count;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
fan->cfg.rpm_max = cpu_to_be16(val);
imanager_hwmon_write_fan_config(imgr, nr, fan);
return count;
}
static ssize_t
show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
u32 val = DIV_ROUND_CLOSEST(data->fan[nr].pwm * 255, 100);
return sprintf(buf, "%u\n", val);
}
static ssize_t
store_pwm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_device_data *imgr = data->imgr;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
int did = imgr->ec.hwmon.fan.attr[nr]->did;
unsigned long pwm = 0;
int err;
err = kstrtoul(buf, 10, &pwm);
if (err < 0)
return err;
pwm = DIV_ROUND_CLOSEST(pwm * 100, 255);
if (ctrl->mode == MODE_MANUAL) {
ctrl->type = CTRL_PWM;
ctrl->pulse = 0;
ctrl->enable = 1;
imanager_hwmon_write_fan_config(imgr, nr, fan);
imanager_write8(imgr, EC_CMD_HWP_WR, did, pwm);
} else if ((ctrl->mode == MODE_AUTO) && (ctrl->type == CTRL_PWM)) {
ctrl->pulse = 0;
ctrl->enable = 1;
fan->cfg.rpm_min = 0;
fan->cfg.rpm_max = 0;
imanager_hwmon_write_fan_config(imgr, nr, fan);
imanager_write8(imgr, EC_CMD_HWP_WR, did, pwm);
imanager_hwmon_write_fan_alert(imgr, nr, fan);
}
return count;
}
static ssize_t
show_pwm_min(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
return sprintf(buf, "%u\n", data->fan[nr].cfg.pwm_min);
}
static ssize_t
show_pwm_max(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
return sprintf(buf, "%u\n", data->fan[nr].cfg.pwm_max);
}
static ssize_t
show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
uint mode = ctrl->mode - 1;
if (ctrl->mode == MODE_OFF)
mode = 0;
return sprintf(buf, "%u\n", mode);
}
enum pwm_enable { OFF, MANUAL, THERMAL_CRUISE };
static ssize_t
store_pwm_enable(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
struct imanager_device_data *imgr = data->imgr;
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
int did = imgr->ec.hwmon.fan.attr[nr]->did;
unsigned long mode = 0;
int err;
err = kstrtoul(buf, 10, &mode);
if (err < 0)
return err;
switch (mode) {
case OFF:
ctrl->mode = MODE_FULL;
ctrl->type = CTRL_PWM;
ctrl->enable = 1;
imanager_hwmon_write_fan_config(imgr, nr, fan);
imanager_write8(imgr, EC_CMD_HWP_WR, did, 100);
break;
case MANUAL:
ctrl->mode = MODE_MANUAL;
ctrl->type = CTRL_PWM;
ctrl->enable = 1;
imanager_hwmon_write_fan_config(imgr, nr, fan);
imanager_write8(imgr, EC_CMD_HWP_WR, did, 0);
break;
case THERMAL_CRUISE:
ctrl->mode = MODE_AUTO;
ctrl->enable = 1;
imanager_hwmon_write_fan_config(imgr, nr, fan);
imanager_write8(imgr, EC_CMD_HWP_WR, did, 0);
break;
}
return count;
}
static ssize_t
show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
uint mode = (ctrl->type == CTRL_PWM) ? 1 : 0;
if (ctrl->mode == MODE_OFF)
mode = 0;
return sprintf(buf, "%u\n", mode);
}
static ssize_t
store_pwm_mode(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
struct imanager_device_data *imgr = data->imgr;
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
unsigned long val = 0;
int err;
if (ctrl->mode != MODE_AUTO)
return count;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
ctrl->type = val ? CTRL_RPM : CTRL_PWM;
ctrl->enable = 1;
imanager_hwmon_write_fan_config(imgr, nr, fan);
return count;
}
static ssize_t
show_temp_min(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
return sprintf(buf, "%d\n", data->fan[nr].cfg.temp_min * 1000);
}
static ssize_t
show_temp_max(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
return sprintf(buf, "%u\n", data->fan[nr].cfg.temp_max * 1000);
}
static inline bool check_boundary(int value, int min, int max)
{
return (value < min) || (value > max);
}
static ssize_t
show_temp_alarm(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
int nr = to_sensor_dev_attr(attr)->index - 1;
struct fan_dev_config *cfg = &data->fan[nr].cfg;
struct fan_ctrl *ctrl = (struct fan_ctrl *)&cfg->control;
bool is_alarm = (ctrl->mode == MODE_AUTO) ? 0 :
check_boundary(cfg->temp, cfg->temp_min, cfg->temp_max);
return sprintf(buf, "%u\n", is_alarm);
}
static ssize_t store_temp_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
struct imanager_device_data *imgr = data->imgr;
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
long val = 0;
int err;
if (ctrl->mode != MODE_AUTO)
return count;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
/* temperature in 1/10 degC */
val = DIV_ROUND_CLOSEST(val, 1000);
val = val > 100 ? 100 : val;
/*
* The iManager provides three different temperature limit values
* (stop, min, and max) where stop indicates a minimum temp value
* (threshold) from which the FAN will turn off. We are setting
* temp_stop to the same value as temp_min since it cannot be mapped
* to anything else.
*/
fan->cfg.temp_stop = val;
fan->cfg.temp_min = val;
imanager_hwmon_write_fan_config(imgr, nr, fan);
return count;
}
static ssize_t
store_temp_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
struct imanager_device_data *imgr = data->imgr;
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control;
long val = 0;
int err;
if (ctrl->mode != MODE_AUTO)
return count;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = DIV_ROUND_CLOSEST(val, 1000);
val = val > 100 ? 100 : val;
fan->cfg.temp_max = val;
imanager_hwmon_write_fan_config(imgr, nr, fan);
return count;
}
static ssize_t
store_pwm_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
struct imanager_device_data *imgr = data->imgr;
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
long val = 0;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = DIV_ROUND_CLOSEST(val * 100, 255);
fan->cfg.pwm_min = val;
imanager_hwmon_write_fan_config(imgr, nr, fan);
return count;
}
static ssize_t
store_pwm_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
struct imanager_device_data *imgr = data->imgr;
int nr = to_sensor_dev_attr(attr)->index - 1;
struct imanager_hwmon_smartfan *fan = &data->fan[nr];
long val = 0;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = DIV_ROUND_CLOSEST(val * 100, 255);
fan->cfg.pwm_max = val;
imanager_hwmon_write_fan_config(imgr, nr, fan);
return count;
}
static ssize_t
show_in_label(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
struct imanager_hwmon_device *hwmon = &data->imgr->ec.hwmon;
int nr = to_sensor_dev_attr(attr)->index;
return sprintf(buf, "%s\n", hwmon->adc.label[nr]);
}
static ssize_t
show_temp_label(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
struct imanager_hwmon_device *hwmon = &data->imgr->ec.hwmon;
int nr = to_sensor_dev_attr(attr)->index - 1;
return sprintf(buf, "%s\n", hwmon->fan.temp_label[nr]);
}
static ssize_t
show_fan_label(struct device *dev, struct device_attribute *attr, char *buf)
{
struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev);
struct imanager_hwmon_device *hwmon = &data->imgr->ec.hwmon;
int nr = to_sensor_dev_attr(attr)->index - 1;
return sprintf(buf, "%s\n", hwmon->fan.label[nr]);
}
/*
* Sysfs callback functions
*/
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0)
static ssize_t
show_name(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "imanager_hwmon\n");
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
#endif
static SENSOR_DEVICE_ATTR(in0_label, 0444, show_in_label, NULL, 0);
static SENSOR_DEVICE_ATTR(in0_input, 0444, show_in, NULL, 0);
static SENSOR_DEVICE_ATTR(in0_min, 0644, show_in_min, store_in_min, 0);
static SENSOR_DEVICE_ATTR(in0_max, 0644, show_in_max, store_in_max, 0);
static SENSOR_DEVICE_ATTR(in0_alarm, 0444, show_in_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(in1_label, 0444, show_in_label, NULL, 1);
static SENSOR_DEVICE_ATTR(in1_input, 0444, show_in, NULL, 1);
static SENSOR_DEVICE_ATTR(in1_min, 0644, show_in_min, store_in_min, 1);
static SENSOR_DEVICE_ATTR(in1_max, 0644, show_in_max, store_in_max, 1);
static SENSOR_DEVICE_ATTR(in1_alarm, 0444, show_in_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(in2_label, 0444, show_in_label, NULL, 2);
static SENSOR_DEVICE_ATTR(in2_input, 0444, show_in, NULL, 2);
static SENSOR_DEVICE_ATTR(in2_min, 0644, show_in_min, store_in_min, 2);
static SENSOR_DEVICE_ATTR(in2_max, 0644, show_in_max, store_in_max, 2);
static SENSOR_DEVICE_ATTR(in2_alarm, 0444, show_in_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(temp1_label, 0444, show_temp_label, NULL, 1);
static SENSOR_DEVICE_ATTR(temp1_input, 0444, show_temp, NULL, 1);
static SENSOR_DEVICE_ATTR(temp1_min, 0644, show_temp_min, store_temp_min, 1);
static SENSOR_DEVICE_ATTR(temp1_max, 0644, show_temp_max, store_temp_max, 1);
static SENSOR_DEVICE_ATTR(temp1_alarm, 0444, show_temp_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(temp2_label, 0444, show_temp_label, NULL, 2);
static SENSOR_DEVICE_ATTR(temp2_input, 0444, show_temp, NULL, 2);
static SENSOR_DEVICE_ATTR(temp2_min, 0644, show_temp_min, store_temp_min, 2);
static SENSOR_DEVICE_ATTR(temp2_max, 0644, show_temp_max, store_temp_max, 2);
static SENSOR_DEVICE_ATTR(temp2_alarm, 0444, show_temp_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(temp3_label, 0444, show_temp_label, NULL, 3);
static SENSOR_DEVICE_ATTR(temp3_input, 0444, show_temp, NULL, 3);
static SENSOR_DEVICE_ATTR(temp3_min, 0644, show_temp_min, store_temp_min, 3);
static SENSOR_DEVICE_ATTR(temp3_max, 0644, show_temp_max, store_temp_max, 3);
static SENSOR_DEVICE_ATTR(temp3_alarm, 0444, show_temp_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(fan1_label, 0444, show_fan_label, NULL, 1);
static SENSOR_DEVICE_ATTR(fan1_input, 0444, show_fan_in, NULL, 1);
static SENSOR_DEVICE_ATTR(fan1_min, 0644, show_fan_min, store_fan_min, 1);
static SENSOR_DEVICE_ATTR(fan1_max, 0644, show_fan_max, store_fan_max, 1);
static SENSOR_DEVICE_ATTR(fan1_alarm, 0444, show_fan_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(fan2_label, 0444, show_fan_label, NULL, 2);
static SENSOR_DEVICE_ATTR(fan2_input, 0444, show_fan_in, NULL, 2);
static SENSOR_DEVICE_ATTR(fan2_min, 0644, show_fan_min, store_fan_min, 2);
static SENSOR_DEVICE_ATTR(fan2_max, 0644, show_fan_max, store_fan_max, 2);
static SENSOR_DEVICE_ATTR(fan2_alarm, 0444, show_fan_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(fan3_label, 0444, show_fan_label, NULL, 3);
static SENSOR_DEVICE_ATTR(fan3_input, 0444, show_fan_in, NULL, 3);
static SENSOR_DEVICE_ATTR(fan3_min, 0644, show_fan_min, store_fan_min, 3);
static SENSOR_DEVICE_ATTR(fan3_max, 0644, show_fan_max, store_fan_max, 3);
static SENSOR_DEVICE_ATTR(fan3_alarm, 0444, show_fan_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(pwm1, 0644, show_pwm, store_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm1_min, 0644, show_pwm_min, store_pwm_min, 1);
static SENSOR_DEVICE_ATTR(pwm1_max, 0644, show_pwm_max, store_pwm_max, 1);
static SENSOR_DEVICE_ATTR(pwm1_enable, 0644, show_pwm_enable,
store_pwm_enable, 1);
static SENSOR_DEVICE_ATTR(pwm1_mode, 0644, show_pwm_mode, store_pwm_mode, 1);
static SENSOR_DEVICE_ATTR(pwm2, 0644, show_pwm, store_pwm, 2);
static SENSOR_DEVICE_ATTR(pwm2_min, 0644, show_pwm_min, store_pwm_min, 2);
static SENSOR_DEVICE_ATTR(pwm2_max, 0644, show_pwm_max, store_pwm_max, 2);
static SENSOR_DEVICE_ATTR(pwm2_enable, 0644, show_pwm_enable,
store_pwm_enable, 2);
static SENSOR_DEVICE_ATTR(pwm2_mode, 0644, show_pwm_mode, store_pwm_mode, 2);
static SENSOR_DEVICE_ATTR(pwm3, 0644, show_pwm, store_pwm, 3);
static SENSOR_DEVICE_ATTR(pwm3_min, 0644, show_pwm_min, store_pwm_min, 3);
static SENSOR_DEVICE_ATTR(pwm3_max, 0644, show_pwm_max, store_pwm_max, 3);
static SENSOR_DEVICE_ATTR(pwm3_enable, 0644, show_pwm_enable,
store_pwm_enable, 3);
static SENSOR_DEVICE_ATTR(pwm3_mode, 0644, show_pwm_mode, store_pwm_mode, 3);
static SENSOR_DEVICE_ATTR(curr1_input, 0444, show_in, NULL, 4);
static SENSOR_DEVICE_ATTR(curr1_min, 0644, show_in_min, store_in_min, 4);
static SENSOR_DEVICE_ATTR(curr1_max, 0644, show_in_max, store_in_max, 4);
static SENSOR_DEVICE_ATTR(curr1_alarm, 0444, show_in_alarm, NULL, 4);
static SENSOR_DEVICE_ATTR(curr1_average, 0444, show_in_average, NULL, 4);
static SENSOR_DEVICE_ATTR(curr1_lowest, 0444, show_in_lowest, NULL, 4);
static SENSOR_DEVICE_ATTR(curr1_highest, 0444, show_in_highest, NULL, 4);
static SENSOR_DEVICE_ATTR(curr1_reset_history, 0200, NULL,
store_in_reset_history, 4);
static SENSOR_DEVICE_ATTR(cpu0_vid, 0444, show_in, NULL, 3);