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linux/drivers/hwmon/pc87360.c
Shen Lichuan ac9cca7a6a hwmon: (pc87360) Use min() macro 
Use the min() macro to simplify the pc87360_init_device() function
and improve its readability.

Signed-off-by: Shen Lichuan <shenlichuan@vivo.com>
Message-ID: <20240827070442.40667-1-shenlichuan@vivo.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-08-27 08:12:23 -07:00

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51 KiB
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* pc87360.c - Part of lm_sensors, Linux kernel modules
* for hardware monitoring
* Copyright (C) 2004, 2007 Jean Delvare <jdelvare@suse.de>
*
* Copied from smsc47m1.c:
* Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
*
* Supports the following chips:
*
* Chip #vin #fan #pwm #temp devid
* PC87360 - 2 2 - 0xE1
* PC87363 - 2 2 - 0xE8
* PC87364 - 3 3 - 0xE4
* PC87365 11 3 3 2 0xE5
* PC87366 11 3 3 3-4 0xE9
*
* This driver assumes that no more than one chip is present, and one of
* the standard Super-I/O addresses is used (0x2E/0x2F or 0x4E/0x4F).
*/
#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/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/acpi.h>
#include <linux/io.h>
#define DRIVER_NAME "pc87360"
/* (temp & vin) channel conversion status register flags (pdf sec.11.5.12) */
#define CHAN_CNVRTD 0x80 /* new data ready */
#define CHAN_ENA 0x01 /* enabled channel (temp or vin) */
#define CHAN_ALM_ENA 0x10 /* propagate to alarms-reg ?? (chk val!) */
#define CHAN_READY (CHAN_ENA|CHAN_CNVRTD) /* sample ready mask */
#define TEMP_OTS_OE 0x20 /* OTS Output Enable */
#define VIN_RW1C_MASK (CHAN_READY|CHAN_ALM_MAX|CHAN_ALM_MIN) /* 0x87 */
#define TEMP_RW1C_MASK (VIN_RW1C_MASK|TEMP_ALM_CRIT|TEMP_FAULT) /* 0xCF */
static u8 devid;
static struct platform_device *pdev;
static unsigned short extra_isa[3];
static u8 confreg[4];
static int init = 1;
module_param(init, int, 0);
MODULE_PARM_DESC(init,
"Chip initialization level:\n"
" 0: None\n"
"*1: Forcibly enable internal voltage and temperature channels, except in9\n"
" 2: Forcibly enable all voltage and temperature channels, except in9\n"
" 3: Forcibly enable all voltage and temperature channels, including in9");
static unsigned short force_id;
module_param(force_id, ushort, 0);
MODULE_PARM_DESC(force_id, "Override the detected device ID");
/*
* Super-I/O registers and operations
*/
#define DEV 0x07 /* Register: Logical device select */
#define DEVID 0x20 /* Register: Device ID */
#define ACT 0x30 /* Register: Device activation */
#define BASE 0x60 /* Register: Base address */
#define FSCM 0x09 /* Logical device: fans */
#define VLM 0x0d /* Logical device: voltages */
#define TMS 0x0e /* Logical device: temperatures */
#define LDNI_MAX 3
static const u8 logdev[LDNI_MAX] = { FSCM, VLM, TMS };
#define LD_FAN 0
#define LD_IN 1
#define LD_TEMP 2
static inline void superio_outb(int sioaddr, int reg, int val)
{
outb(reg, sioaddr);
outb(val, sioaddr + 1);
}
static inline int superio_inb(int sioaddr, int reg)
{
outb(reg, sioaddr);
return inb(sioaddr + 1);
}
static inline void superio_exit(int sioaddr)
{
outb(0x02, sioaddr);
outb(0x02, sioaddr + 1);
}
/*
* Logical devices
*/
#define PC87360_EXTENT 0x10
#define PC87365_REG_BANK 0x09
#define NO_BANK 0xff
/*
* Fan registers and conversions
*/
/* nr has to be 0 or 1 (PC87360/87363) or 2 (PC87364/87365/87366) */
#define PC87360_REG_PRESCALE(nr) (0x00 + 2 * (nr))
#define PC87360_REG_PWM(nr) (0x01 + 2 * (nr))
#define PC87360_REG_FAN_MIN(nr) (0x06 + 3 * (nr))
#define PC87360_REG_FAN(nr) (0x07 + 3 * (nr))
#define PC87360_REG_FAN_STATUS(nr) (0x08 + 3 * (nr))
#define FAN_FROM_REG(val, div) ((val) == 0 ? 0 : \
480000 / ((val) * (div)))
#define FAN_TO_REG(val, div) ((val) <= 100 ? 0 : \
480000 / ((val) * (div)))
#define FAN_DIV_FROM_REG(val) (1 << (((val) >> 5) & 0x03))
#define FAN_STATUS_FROM_REG(val) ((val) & 0x07)
#define FAN_CONFIG_MONITOR(val, nr) (((val) >> (2 + (nr) * 3)) & 1)
#define FAN_CONFIG_CONTROL(val, nr) (((val) >> (3 + (nr) * 3)) & 1)
#define FAN_CONFIG_INVERT(val, nr) (((val) >> (4 + (nr) * 3)) & 1)
#define PWM_FROM_REG(val, inv) ((inv) ? 255 - (val) : (val))
static inline u8 PWM_TO_REG(int val, int inv)
{
if (inv)
val = 255 - val;
if (val < 0)
return 0;
if (val > 255)
return 255;
return val;
}
/*
* Voltage registers and conversions
*/
#define PC87365_REG_IN_CONVRATE 0x07
#define PC87365_REG_IN_CONFIG 0x08
#define PC87365_REG_IN 0x0B
#define PC87365_REG_IN_MIN 0x0D
#define PC87365_REG_IN_MAX 0x0C
#define PC87365_REG_IN_STATUS 0x0A
#define PC87365_REG_IN_ALARMS1 0x00
#define PC87365_REG_IN_ALARMS2 0x01
#define PC87365_REG_VID 0x06
#define IN_FROM_REG(val, ref) (((val) * (ref) + 128) / 256)
#define IN_TO_REG(val, ref) ((val) < 0 ? 0 : \
(val) * 256 >= (ref) * 255 ? 255 : \
((val) * 256 + (ref) / 2) / (ref))
/*
* Temperature registers and conversions
*/
#define PC87365_REG_TEMP_CONFIG 0x08
#define PC87365_REG_TEMP 0x0B
#define PC87365_REG_TEMP_MIN 0x0D
#define PC87365_REG_TEMP_MAX 0x0C
#define PC87365_REG_TEMP_CRIT 0x0E
#define PC87365_REG_TEMP_STATUS 0x0A
#define PC87365_REG_TEMP_ALARMS 0x00
#define TEMP_FROM_REG(val) ((val) * 1000)
#define TEMP_TO_REG(val) ((val) < -55000 ? -55 : \
(val) > 127000 ? 127 : \
(val) < 0 ? ((val) - 500) / 1000 : \
((val) + 500) / 1000)
/*
* Device data
*/
struct pc87360_data {
const char *name;
struct device *hwmon_dev;
struct mutex lock;
struct mutex update_lock;
bool valid; /* true if following fields are valid */
unsigned long last_updated; /* In jiffies */
int address[3];
u8 fannr, innr, tempnr;
u8 fan[3]; /* Register value */
u8 fan_min[3]; /* Register value */
u8 fan_status[3]; /* Register value */
u8 pwm[3]; /* Register value */
u16 fan_conf; /* Configuration register values, combined */
u16 in_vref; /* 1 mV/bit */
u8 in[14]; /* Register value */
u8 in_min[14]; /* Register value */
u8 in_max[14]; /* Register value */
u8 in_crit[3]; /* Register value */
u8 in_status[14]; /* Register value */
u16 in_alarms; /* Register values, combined, masked */
u8 vid_conf; /* Configuration register value */
u8 vrm;
u8 vid; /* Register value */
s8 temp[3]; /* Register value */
s8 temp_min[3]; /* Register value */
s8 temp_max[3]; /* Register value */
s8 temp_crit[3]; /* Register value */
u8 temp_status[3]; /* Register value */
u8 temp_alarms; /* Register value, masked */
};
/*
* ldi is the logical device index
* bank is for voltages and temperatures only
*/
static int pc87360_read_value(struct pc87360_data *data, u8 ldi, u8 bank,
u8 reg)
{
int res;
mutex_lock(&(data->lock));
if (bank != NO_BANK)
outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
res = inb_p(data->address[ldi] + reg);
mutex_unlock(&(data->lock));
return res;
}
static void pc87360_write_value(struct pc87360_data *data, u8 ldi, u8 bank,
u8 reg, u8 value)
{
mutex_lock(&(data->lock));
if (bank != NO_BANK)
outb_p(bank, data->address[ldi] + PC87365_REG_BANK);
outb_p(value, data->address[ldi] + reg);
mutex_unlock(&(data->lock));
}
static void pc87360_autodiv(struct device *dev, int nr)
{
struct pc87360_data *data = dev_get_drvdata(dev);
u8 old_min = data->fan_min[nr];
/* Increase clock divider if needed and possible */
if ((data->fan_status[nr] & 0x04) /* overflow flag */
|| (data->fan[nr] >= 224)) { /* next to overflow */
if ((data->fan_status[nr] & 0x60) != 0x60) {
data->fan_status[nr] += 0x20;
data->fan_min[nr] >>= 1;
data->fan[nr] >>= 1;
dev_dbg(dev,
"Increasing clock divider to %d for fan %d\n",
FAN_DIV_FROM_REG(data->fan_status[nr]), nr + 1);
}
} else {
/* Decrease clock divider if possible */
while (!(data->fan_min[nr] & 0x80) /* min "nails" divider */
&& data->fan[nr] < 85 /* bad accuracy */
&& (data->fan_status[nr] & 0x60) != 0x00) {
data->fan_status[nr] -= 0x20;
data->fan_min[nr] <<= 1;
data->fan[nr] <<= 1;
dev_dbg(dev,
"Decreasing clock divider to %d for fan %d\n",
FAN_DIV_FROM_REG(data->fan_status[nr]),
nr + 1);
}
}
/* Write new fan min if it changed */
if (old_min != data->fan_min[nr]) {
pc87360_write_value(data, LD_FAN, NO_BANK,
PC87360_REG_FAN_MIN(nr),
data->fan_min[nr]);
}
}
static struct pc87360_data *pc87360_update_device(struct device *dev)
{
struct pc87360_data *data = dev_get_drvdata(dev);
u8 i;
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) {
dev_dbg(dev, "Data update\n");
/* Fans */
for (i = 0; i < data->fannr; i++) {
if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
data->fan_status[i] =
pc87360_read_value(data, LD_FAN,
NO_BANK, PC87360_REG_FAN_STATUS(i));
data->fan[i] = pc87360_read_value(data, LD_FAN,
NO_BANK, PC87360_REG_FAN(i));
data->fan_min[i] = pc87360_read_value(data,
LD_FAN, NO_BANK,
PC87360_REG_FAN_MIN(i));
/* Change clock divider if needed */
pc87360_autodiv(dev, i);
/* Clear bits and write new divider */
pc87360_write_value(data, LD_FAN, NO_BANK,
PC87360_REG_FAN_STATUS(i),
data->fan_status[i]);
}
if (FAN_CONFIG_CONTROL(data->fan_conf, i))
data->pwm[i] = pc87360_read_value(data, LD_FAN,
NO_BANK, PC87360_REG_PWM(i));
}
/* Voltages */
/*
* The min() below does not have any practical meaning and is
* only needed to silence a warning observed with gcc 12+.
*/
for (i = 0; i < min(data->innr, ARRAY_SIZE(data->in)); i++) {
data->in_status[i] = pc87360_read_value(data, LD_IN, i,
PC87365_REG_IN_STATUS);
/* Clear bits */
pc87360_write_value(data, LD_IN, i,
PC87365_REG_IN_STATUS,
data->in_status[i]);
if ((data->in_status[i] & CHAN_READY) == CHAN_READY) {
data->in[i] = pc87360_read_value(data, LD_IN,
i, PC87365_REG_IN);
}
if (data->in_status[i] & CHAN_ENA) {
data->in_min[i] = pc87360_read_value(data,
LD_IN, i,
PC87365_REG_IN_MIN);
data->in_max[i] = pc87360_read_value(data,
LD_IN, i,
PC87365_REG_IN_MAX);
if (i >= 11)
data->in_crit[i-11] =
pc87360_read_value(data, LD_IN,
i, PC87365_REG_TEMP_CRIT);
}
}
if (data->innr) {
data->in_alarms = pc87360_read_value(data, LD_IN,
NO_BANK, PC87365_REG_IN_ALARMS1)
| ((pc87360_read_value(data, LD_IN,
NO_BANK, PC87365_REG_IN_ALARMS2)
& 0x07) << 8);
data->vid = (data->vid_conf & 0xE0) ?
pc87360_read_value(data, LD_IN,
NO_BANK, PC87365_REG_VID) : 0x1F;
}
/* Temperatures */
for (i = 0; i < data->tempnr; i++) {
data->temp_status[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP_STATUS);
/* Clear bits */
pc87360_write_value(data, LD_TEMP, i,
PC87365_REG_TEMP_STATUS,
data->temp_status[i]);
if ((data->temp_status[i] & CHAN_READY) == CHAN_READY) {
data->temp[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP);
}
if (data->temp_status[i] & CHAN_ENA) {
data->temp_min[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP_MIN);
data->temp_max[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP_MAX);
data->temp_crit[i] = pc87360_read_value(data,
LD_TEMP, i,
PC87365_REG_TEMP_CRIT);
}
}
if (data->tempnr) {
data->temp_alarms = pc87360_read_value(data, LD_TEMP,
NO_BANK, PC87365_REG_TEMP_ALARMS)
& 0x3F;
}
data->last_updated = jiffies;
data->valid = true;
}
mutex_unlock(&data->update_lock);
return data;
}
static ssize_t in_input_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
data->in_vref));
}
static struct sensor_device_attribute in_input[] = {
SENSOR_ATTR_RO(in0_input, in_input, 0),
SENSOR_ATTR_RO(in1_input, in_input, 1),
SENSOR_ATTR_RO(in2_input, in_input, 2),
SENSOR_ATTR_RO(in3_input, in_input, 3),
SENSOR_ATTR_RO(in4_input, in_input, 4),
SENSOR_ATTR_RO(in5_input, in_input, 5),
SENSOR_ATTR_RO(in6_input, in_input, 6),
SENSOR_ATTR_RO(in7_input, in_input, 7),
SENSOR_ATTR_RO(in8_input, in_input, 8),
SENSOR_ATTR_RO(in9_input, in_input, 9),
SENSOR_ATTR_RO(in10_input, in_input, 10),
};
static ssize_t in_status_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", data->in_status[attr->index]);
}
static struct sensor_device_attribute in_status[] = {
SENSOR_ATTR_RO(in0_status, in_status, 0),
SENSOR_ATTR_RO(in1_status, in_status, 1),
SENSOR_ATTR_RO(in2_status, in_status, 2),
SENSOR_ATTR_RO(in3_status, in_status, 3),
SENSOR_ATTR_RO(in4_status, in_status, 4),
SENSOR_ATTR_RO(in5_status, in_status, 5),
SENSOR_ATTR_RO(in6_status, in_status, 6),
SENSOR_ATTR_RO(in7_status, in_status, 7),
SENSOR_ATTR_RO(in8_status, in_status, 8),
SENSOR_ATTR_RO(in9_status, in_status, 9),
SENSOR_ATTR_RO(in10_status, in_status, 10),
};
static ssize_t in_min_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
data->in_vref));
}
static ssize_t in_min_store(struct device *dev,
struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MIN,
data->in_min[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute in_min[] = {
SENSOR_ATTR_RW(in0_min, in_min, 0),
SENSOR_ATTR_RW(in1_min, in_min, 1),
SENSOR_ATTR_RW(in2_min, in_min, 2),
SENSOR_ATTR_RW(in3_min, in_min, 3),
SENSOR_ATTR_RW(in4_min, in_min, 4),
SENSOR_ATTR_RW(in5_min, in_min, 5),
SENSOR_ATTR_RW(in6_min, in_min, 6),
SENSOR_ATTR_RW(in7_min, in_min, 7),
SENSOR_ATTR_RW(in8_min, in_min, 8),
SENSOR_ATTR_RW(in9_min, in_min, 9),
SENSOR_ATTR_RW(in10_min, in_min, 10),
};
static ssize_t in_max_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
data->in_vref));
}
static ssize_t in_max_store(struct device *dev,
struct device_attribute *devattr, const char *buf,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->in_max[attr->index] = IN_TO_REG(val,
data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_IN_MAX,
data->in_max[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute in_max[] = {
SENSOR_ATTR_RW(in0_max, in_max, 0),
SENSOR_ATTR_RW(in1_max, in_max, 1),
SENSOR_ATTR_RW(in2_max, in_max, 2),
SENSOR_ATTR_RW(in3_max, in_max, 3),
SENSOR_ATTR_RW(in4_max, in_max, 4),
SENSOR_ATTR_RW(in5_max, in_max, 5),
SENSOR_ATTR_RW(in6_max, in_max, 6),
SENSOR_ATTR_RW(in7_max, in_max, 7),
SENSOR_ATTR_RW(in8_max, in_max, 8),
SENSOR_ATTR_RW(in9_max, in_max, 9),
SENSOR_ATTR_RW(in10_max, in_max, 10),
};
/* (temp & vin) channel status register alarm bits (pdf sec.11.5.12) */
#define CHAN_ALM_MIN 0x02 /* min limit crossed */
#define CHAN_ALM_MAX 0x04 /* max limit exceeded */
#define TEMP_ALM_CRIT 0x08 /* temp crit exceeded (temp only) */
/*
* show_in_min/max_alarm() reads data from the per-channel status
* register (sec 11.5.12), not the vin event status registers (sec
* 11.5.2) that (legacy) show_in_alarm() resds (via data->in_alarms)
*/
static ssize_t in_min_alarm_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
unsigned nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
}
static struct sensor_device_attribute in_min_alarm[] = {
SENSOR_ATTR_RO(in0_min_alarm, in_min_alarm, 0),
SENSOR_ATTR_RO(in1_min_alarm, in_min_alarm, 1),
SENSOR_ATTR_RO(in2_min_alarm, in_min_alarm, 2),
SENSOR_ATTR_RO(in3_min_alarm, in_min_alarm, 3),
SENSOR_ATTR_RO(in4_min_alarm, in_min_alarm, 4),
SENSOR_ATTR_RO(in5_min_alarm, in_min_alarm, 5),
SENSOR_ATTR_RO(in6_min_alarm, in_min_alarm, 6),
SENSOR_ATTR_RO(in7_min_alarm, in_min_alarm, 7),
SENSOR_ATTR_RO(in8_min_alarm, in_min_alarm, 8),
SENSOR_ATTR_RO(in9_min_alarm, in_min_alarm, 9),
SENSOR_ATTR_RO(in10_min_alarm, in_min_alarm, 10),
};
static ssize_t in_max_alarm_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
unsigned nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
}
static struct sensor_device_attribute in_max_alarm[] = {
SENSOR_ATTR_RO(in0_max_alarm, in_max_alarm, 0),
SENSOR_ATTR_RO(in1_max_alarm, in_max_alarm, 1),
SENSOR_ATTR_RO(in2_max_alarm, in_max_alarm, 2),
SENSOR_ATTR_RO(in3_max_alarm, in_max_alarm, 3),
SENSOR_ATTR_RO(in4_max_alarm, in_max_alarm, 4),
SENSOR_ATTR_RO(in5_max_alarm, in_max_alarm, 5),
SENSOR_ATTR_RO(in6_max_alarm, in_max_alarm, 6),
SENSOR_ATTR_RO(in7_max_alarm, in_max_alarm, 7),
SENSOR_ATTR_RO(in8_max_alarm, in_max_alarm, 8),
SENSOR_ATTR_RO(in9_max_alarm, in_max_alarm, 9),
SENSOR_ATTR_RO(in10_max_alarm, in_max_alarm, 10),
};
#define VIN_UNIT_ATTRS(X) \
&in_input[X].dev_attr.attr, \
&in_status[X].dev_attr.attr, \
&in_min[X].dev_attr.attr, \
&in_max[X].dev_attr.attr, \
&in_min_alarm[X].dev_attr.attr, \
&in_max_alarm[X].dev_attr.attr
static ssize_t cpu0_vid_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm));
}
static DEVICE_ATTR_RO(cpu0_vid);
static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct pc87360_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%u\n", data->vrm);
}
static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct pc87360_data *data = dev_get_drvdata(dev);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
if (val > 255)
return -EINVAL;
data->vrm = val;
return count;
}
static DEVICE_ATTR_RW(vrm);
static ssize_t alarms_in_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", data->in_alarms);
}
static DEVICE_ATTR_RO(alarms_in);
static struct attribute *pc8736x_vin_attr_array[] = {
VIN_UNIT_ATTRS(0),
VIN_UNIT_ATTRS(1),
VIN_UNIT_ATTRS(2),
VIN_UNIT_ATTRS(3),
VIN_UNIT_ATTRS(4),
VIN_UNIT_ATTRS(5),
VIN_UNIT_ATTRS(6),
VIN_UNIT_ATTRS(7),
VIN_UNIT_ATTRS(8),
VIN_UNIT_ATTRS(9),
VIN_UNIT_ATTRS(10),
&dev_attr_cpu0_vid.attr,
&dev_attr_vrm.attr,
&dev_attr_alarms_in.attr,
NULL
};
static const struct attribute_group pc8736x_vin_group = {
.attrs = pc8736x_vin_attr_array,
};
static ssize_t therm_input_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in[attr->index],
data->in_vref));
}
/*
* the +11 term below reflects the fact that VLM units 11,12,13 are
* used in the chip to measure voltage across the thermistors
*/
static struct sensor_device_attribute therm_input[] = {
SENSOR_ATTR_RO(temp4_input, therm_input, 0 + 11),
SENSOR_ATTR_RO(temp5_input, therm_input, 1 + 11),
SENSOR_ATTR_RO(temp6_input, therm_input, 2 + 11),
};
static ssize_t therm_status_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", data->in_status[attr->index]);
}
static struct sensor_device_attribute therm_status[] = {
SENSOR_ATTR_RO(temp4_status, therm_status, 0 + 11),
SENSOR_ATTR_RO(temp5_status, therm_status, 1 + 11),
SENSOR_ATTR_RO(temp6_status, therm_status, 2 + 11),
};
static ssize_t therm_min_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[attr->index],
data->in_vref));
}
static ssize_t therm_min_store(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->in_min[attr->index] = IN_TO_REG(val, data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MIN,
data->in_min[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute therm_min[] = {
SENSOR_ATTR_RW(temp4_min, therm_min, 0 + 11),
SENSOR_ATTR_RW(temp5_min, therm_min, 1 + 11),
SENSOR_ATTR_RW(temp6_min, therm_min, 2 + 11),
};
static ssize_t therm_max_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[attr->index],
data->in_vref));
}
static ssize_t therm_max_store(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->in_max[attr->index] = IN_TO_REG(val, data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_MAX,
data->in_max[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute therm_max[] = {
SENSOR_ATTR_RW(temp4_max, therm_max, 0 + 11),
SENSOR_ATTR_RW(temp5_max, therm_max, 1 + 11),
SENSOR_ATTR_RW(temp6_max, therm_max, 2 + 11),
};
static ssize_t therm_crit_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", IN_FROM_REG(data->in_crit[attr->index-11],
data->in_vref));
}
static ssize_t therm_crit_store(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->in_crit[attr->index-11] = IN_TO_REG(val, data->in_vref);
pc87360_write_value(data, LD_IN, attr->index, PC87365_REG_TEMP_CRIT,
data->in_crit[attr->index-11]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute therm_crit[] = {
SENSOR_ATTR_RW(temp4_crit, therm_crit, 0 + 11),
SENSOR_ATTR_RW(temp5_crit, therm_crit, 1 + 11),
SENSOR_ATTR_RW(temp6_crit, therm_crit, 2 + 11),
};
/*
* show_therm_min/max_alarm() reads data from the per-channel voltage
* status register (sec 11.5.12)
*/
static ssize_t therm_min_alarm_show(struct device *dev,
struct device_attribute *devattr,
char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
unsigned nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MIN));
}
static struct sensor_device_attribute therm_min_alarm[] = {
SENSOR_ATTR_RO(temp4_min_alarm, therm_min_alarm, 0 + 11),
SENSOR_ATTR_RO(temp5_min_alarm, therm_min_alarm, 1 + 11),
SENSOR_ATTR_RO(temp6_min_alarm, therm_min_alarm, 2 + 11),
};
static ssize_t therm_max_alarm_show(struct device *dev,
struct device_attribute *devattr,
char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
unsigned nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", !!(data->in_status[nr] & CHAN_ALM_MAX));
}
static struct sensor_device_attribute therm_max_alarm[] = {
SENSOR_ATTR_RO(temp4_max_alarm, therm_max_alarm, 0 + 11),
SENSOR_ATTR_RO(temp5_max_alarm, therm_max_alarm, 1 + 11),
SENSOR_ATTR_RO(temp6_max_alarm, therm_max_alarm, 2 + 11),
};
static ssize_t therm_crit_alarm_show(struct device *dev,
struct device_attribute *devattr,
char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
unsigned nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", !!(data->in_status[nr] & TEMP_ALM_CRIT));
}
static struct sensor_device_attribute therm_crit_alarm[] = {
SENSOR_ATTR_RO(temp4_crit_alarm, therm_crit_alarm, 0 + 11),
SENSOR_ATTR_RO(temp5_crit_alarm, therm_crit_alarm, 1 + 11),
SENSOR_ATTR_RO(temp6_crit_alarm, therm_crit_alarm, 2 + 11),
};
#define THERM_UNIT_ATTRS(X) \
&therm_input[X].dev_attr.attr, \
&therm_status[X].dev_attr.attr, \
&therm_min[X].dev_attr.attr, \
&therm_max[X].dev_attr.attr, \
&therm_crit[X].dev_attr.attr, \
&therm_min_alarm[X].dev_attr.attr, \
&therm_max_alarm[X].dev_attr.attr, \
&therm_crit_alarm[X].dev_attr.attr
static struct attribute *pc8736x_therm_attr_array[] = {
THERM_UNIT_ATTRS(0),
THERM_UNIT_ATTRS(1),
THERM_UNIT_ATTRS(2),
NULL
};
static const struct attribute_group pc8736x_therm_group = {
.attrs = pc8736x_therm_attr_array,
};
static ssize_t temp_input_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]));
}
static struct sensor_device_attribute temp_input[] = {
SENSOR_ATTR_RO(temp1_input, temp_input, 0),
SENSOR_ATTR_RO(temp2_input, temp_input, 1),
SENSOR_ATTR_RO(temp3_input, temp_input, 2),
};
static ssize_t temp_status_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n", data->temp_status[attr->index]);
}
static struct sensor_device_attribute temp_status[] = {
SENSOR_ATTR_RO(temp1_status, temp_status, 0),
SENSOR_ATTR_RO(temp2_status, temp_status, 1),
SENSOR_ATTR_RO(temp3_status, temp_status, 2),
};
static ssize_t temp_min_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[attr->index]));
}
static ssize_t temp_min_store(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->temp_min[attr->index] = TEMP_TO_REG(val);
pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MIN,
data->temp_min[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute temp_min[] = {
SENSOR_ATTR_RW(temp1_min, temp_min, 0),
SENSOR_ATTR_RW(temp2_min, temp_min, 1),
SENSOR_ATTR_RW(temp3_min, temp_min, 2),
};
static ssize_t temp_max_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[attr->index]));
}
static ssize_t temp_max_store(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->temp_max[attr->index] = TEMP_TO_REG(val);
pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_MAX,
data->temp_max[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute temp_max[] = {
SENSOR_ATTR_RW(temp1_max, temp_max, 0),
SENSOR_ATTR_RW(temp2_max, temp_max, 1),
SENSOR_ATTR_RW(temp3_max, temp_max, 2),
};
static ssize_t temp_crit_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%d\n",
TEMP_FROM_REG(data->temp_crit[attr->index]));
}
static ssize_t temp_crit_store(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->temp_crit[attr->index] = TEMP_TO_REG(val);
pc87360_write_value(data, LD_TEMP, attr->index, PC87365_REG_TEMP_CRIT,
data->temp_crit[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute temp_crit[] = {
SENSOR_ATTR_RW(temp1_crit, temp_crit, 0),
SENSOR_ATTR_RW(temp2_crit, temp_crit, 1),
SENSOR_ATTR_RW(temp3_crit, temp_crit, 2),
};
/*
* temp_min/max_alarm_show() reads data from the per-channel status
* register (sec 12.3.7), not the temp event status registers (sec
* 12.3.2) that show_temp_alarm() reads (via data->temp_alarms)
*/
static ssize_t temp_min_alarm_show(struct device *dev,
struct device_attribute *devattr,
char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
unsigned nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MIN));
}
static struct sensor_device_attribute temp_min_alarm[] = {
SENSOR_ATTR_RO(temp1_min_alarm, temp_min_alarm, 0),
SENSOR_ATTR_RO(temp2_min_alarm, temp_min_alarm, 1),
SENSOR_ATTR_RO(temp3_min_alarm, temp_min_alarm, 2),
};
static ssize_t temp_max_alarm_show(struct device *dev,
struct device_attribute *devattr,
char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
unsigned nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", !!(data->temp_status[nr] & CHAN_ALM_MAX));
}
static struct sensor_device_attribute temp_max_alarm[] = {
SENSOR_ATTR_RO(temp1_max_alarm, temp_max_alarm, 0),
SENSOR_ATTR_RO(temp2_max_alarm, temp_max_alarm, 1),
SENSOR_ATTR_RO(temp3_max_alarm, temp_max_alarm, 2),
};
static ssize_t temp_crit_alarm_show(struct device *dev,
struct device_attribute *devattr,
char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
unsigned nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_ALM_CRIT));
}
static struct sensor_device_attribute temp_crit_alarm[] = {
SENSOR_ATTR_RO(temp1_crit_alarm, temp_crit_alarm, 0),
SENSOR_ATTR_RO(temp2_crit_alarm, temp_crit_alarm, 1),
SENSOR_ATTR_RO(temp3_crit_alarm, temp_crit_alarm, 2),
};
#define TEMP_FAULT 0x40 /* open diode */
static ssize_t temp_fault_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
unsigned nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", !!(data->temp_status[nr] & TEMP_FAULT));
}
static struct sensor_device_attribute temp_fault[] = {
SENSOR_ATTR_RO(temp1_fault, temp_fault, 0),
SENSOR_ATTR_RO(temp2_fault, temp_fault, 1),
SENSOR_ATTR_RO(temp3_fault, temp_fault, 2),
};
#define TEMP_UNIT_ATTRS(X) \
{ &temp_input[X].dev_attr.attr, \
&temp_status[X].dev_attr.attr, \
&temp_min[X].dev_attr.attr, \
&temp_max[X].dev_attr.attr, \
&temp_crit[X].dev_attr.attr, \
&temp_min_alarm[X].dev_attr.attr, \
&temp_max_alarm[X].dev_attr.attr, \
&temp_crit_alarm[X].dev_attr.attr, \
&temp_fault[X].dev_attr.attr, \
NULL \
}
static struct attribute *pc8736x_temp_attr[][10] = {
TEMP_UNIT_ATTRS(0),
TEMP_UNIT_ATTRS(1),
TEMP_UNIT_ATTRS(2)
};
static const struct attribute_group pc8736x_temp_attr_group[] = {
{ .attrs = pc8736x_temp_attr[0] },
{ .attrs = pc8736x_temp_attr[1] },
{ .attrs = pc8736x_temp_attr[2] }
};
static ssize_t alarms_temp_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", data->temp_alarms);
}
static DEVICE_ATTR_RO(alarms_temp);
static ssize_t fan_input_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan[attr->index],
FAN_DIV_FROM_REG(data->fan_status[attr->index])));
}
static struct sensor_device_attribute fan_input[] = {
SENSOR_ATTR_RO(fan1_input, fan_input, 0),
SENSOR_ATTR_RO(fan2_input, fan_input, 1),
SENSOR_ATTR_RO(fan3_input, fan_input, 2),
};
static ssize_t fan_status_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n",
FAN_STATUS_FROM_REG(data->fan_status[attr->index]));
}
static struct sensor_device_attribute fan_status[] = {
SENSOR_ATTR_RO(fan1_status, fan_status, 0),
SENSOR_ATTR_RO(fan2_status, fan_status, 1),
SENSOR_ATTR_RO(fan3_status, fan_status, 2),
};
static ssize_t fan_div_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n",
FAN_DIV_FROM_REG(data->fan_status[attr->index]));
}
static struct sensor_device_attribute fan_div[] = {
SENSOR_ATTR_RO(fan1_div, fan_div, 0),
SENSOR_ATTR_RO(fan2_div, fan_div, 1),
SENSOR_ATTR_RO(fan3_div, fan_div, 2),
};
static ssize_t fan_min_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n", FAN_FROM_REG(data->fan_min[attr->index],
FAN_DIV_FROM_REG(data->fan_status[attr->index])));
}
static ssize_t fan_min_store(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long fan_min;
int err;
err = kstrtol(buf, 10, &fan_min);
if (err)
return err;
mutex_lock(&data->update_lock);
fan_min = FAN_TO_REG(fan_min,
FAN_DIV_FROM_REG(data->fan_status[attr->index]));
/* If it wouldn't fit, change clock divisor */
while (fan_min > 255
&& (data->fan_status[attr->index] & 0x60) != 0x60) {
fan_min >>= 1;
data->fan[attr->index] >>= 1;
data->fan_status[attr->index] += 0x20;
}
data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
pc87360_write_value(data, LD_FAN, NO_BANK,
PC87360_REG_FAN_MIN(attr->index),
data->fan_min[attr->index]);
/* Write new divider, preserve alarm bits */
pc87360_write_value(data, LD_FAN, NO_BANK,
PC87360_REG_FAN_STATUS(attr->index),
data->fan_status[attr->index] & 0xF9);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute fan_min[] = {
SENSOR_ATTR_RW(fan1_min, fan_min, 0),
SENSOR_ATTR_RW(fan2_min, fan_min, 1),
SENSOR_ATTR_RW(fan3_min, fan_min, 2),
};
#define FAN_UNIT_ATTRS(X) \
{ &fan_input[X].dev_attr.attr, \
&fan_status[X].dev_attr.attr, \
&fan_div[X].dev_attr.attr, \
&fan_min[X].dev_attr.attr, \
NULL \
}
static struct attribute *pc8736x_fan_attr[][5] = {
FAN_UNIT_ATTRS(0),
FAN_UNIT_ATTRS(1),
FAN_UNIT_ATTRS(2)
};
static const struct attribute_group pc8736x_fan_attr_group[] = {
{ .attrs = pc8736x_fan_attr[0], },
{ .attrs = pc8736x_fan_attr[1], },
{ .attrs = pc8736x_fan_attr[2], },
};
static ssize_t pwm_show(struct device *dev, struct device_attribute *devattr,
char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = pc87360_update_device(dev);
return sprintf(buf, "%u\n",
PWM_FROM_REG(data->pwm[attr->index],
FAN_CONFIG_INVERT(data->fan_conf,
attr->index)));
}
static ssize_t pwm_store(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct pc87360_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->pwm[attr->index] = PWM_TO_REG(val,
FAN_CONFIG_INVERT(data->fan_conf, attr->index));
pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_PWM(attr->index),
data->pwm[attr->index]);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute pwm[] = {
SENSOR_ATTR_RW(pwm1, pwm, 0),
SENSOR_ATTR_RW(pwm2, pwm, 1),
SENSOR_ATTR_RW(pwm3, pwm, 2),
};
static ssize_t name_show(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct pc87360_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", data->name);
}
static DEVICE_ATTR_RO(name);
static void pc87360_remove_files(struct device *dev)
{
int i;
device_remove_file(dev, &dev_attr_name);
device_remove_file(dev, &dev_attr_alarms_temp);
for (i = 0; i < ARRAY_SIZE(pc8736x_temp_attr_group); i++)
sysfs_remove_group(&dev->kobj, &pc8736x_temp_attr_group[i]);
for (i = 0; i < ARRAY_SIZE(pc8736x_fan_attr_group); i++) {
sysfs_remove_group(&pdev->dev.kobj, &pc8736x_fan_attr_group[i]);
device_remove_file(dev, &pwm[i].dev_attr);
}
sysfs_remove_group(&dev->kobj, &pc8736x_therm_group);
sysfs_remove_group(&dev->kobj, &pc8736x_vin_group);
}
static void pc87360_init_device(struct platform_device *pdev,
int use_thermistors)
{
struct pc87360_data *data = platform_get_drvdata(pdev);
int i, nr;
const u8 init_in[14] = { 2, 2, 2, 2, 2, 2, 2, 1, 1, 3, 1, 2, 2, 2 };
const u8 init_temp[3] = { 2, 2, 1 };
u8 reg;
if (init >= 2 && data->innr) {
reg = pc87360_read_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONVRATE);
dev_info(&pdev->dev,
"VLM conversion set to 1s period, 160us delay\n");
pc87360_write_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONVRATE,
(reg & 0xC0) | 0x11);
}
nr = min(data->innr, 11);
for (i = 0; i < nr; i++) {
reg = pc87360_read_value(data, LD_IN, i,
PC87365_REG_IN_STATUS);
dev_dbg(&pdev->dev, "bios in%d status:0x%02x\n", i, reg);
if (init >= init_in[i]) {
/* Forcibly enable voltage channel */
if (!(reg & CHAN_ENA)) {
dev_dbg(&pdev->dev, "Forcibly enabling in%d\n",
i);
pc87360_write_value(data, LD_IN, i,
PC87365_REG_IN_STATUS,
(reg & 0x68) | 0x87);
}
}
}
/*
* We can't blindly trust the Super-I/O space configuration bit,
* most BIOS won't set it properly
*/
dev_dbg(&pdev->dev, "bios thermistors:%d\n", use_thermistors);
for (i = 11; i < data->innr; i++) {
reg = pc87360_read_value(data, LD_IN, i,
PC87365_REG_TEMP_STATUS);
use_thermistors = use_thermistors || (reg & CHAN_ENA);
/* thermistors are temp[4-6], measured on vin[11-14] */
dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i-7, reg);
}
dev_dbg(&pdev->dev, "using thermistors:%d\n", use_thermistors);
i = use_thermistors ? 2 : 0;
for (; i < data->tempnr; i++) {
reg = pc87360_read_value(data, LD_TEMP, i,
PC87365_REG_TEMP_STATUS);
dev_dbg(&pdev->dev, "bios temp%d_status:0x%02x\n", i + 1, reg);
if (init >= init_temp[i]) {
/* Forcibly enable temperature channel */
if (!(reg & CHAN_ENA)) {
dev_dbg(&pdev->dev,
"Forcibly enabling temp%d\n", i + 1);
pc87360_write_value(data, LD_TEMP, i,
PC87365_REG_TEMP_STATUS,
0xCF);
}
}
}
if (use_thermistors) {
for (i = 11; i < data->innr; i++) {
if (init >= init_in[i]) {
/*
* The pin may already be used by thermal
* diodes
*/
reg = pc87360_read_value(data, LD_TEMP,
(i - 11) / 2, PC87365_REG_TEMP_STATUS);
if (reg & CHAN_ENA) {
dev_dbg(&pdev->dev,
"Skipping temp%d, pin already in use by temp%d\n",
i - 7, (i - 11) / 2);
continue;
}
/* Forcibly enable thermistor channel */
reg = pc87360_read_value(data, LD_IN, i,
PC87365_REG_IN_STATUS);
if (!(reg & CHAN_ENA)) {
dev_dbg(&pdev->dev,
"Forcibly enabling temp%d\n",
i - 7);
pc87360_write_value(data, LD_IN, i,
PC87365_REG_TEMP_STATUS,
(reg & 0x60) | 0x8F);
}
}
}
}
if (data->innr) {
reg = pc87360_read_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONFIG);
dev_dbg(&pdev->dev, "bios vin-cfg:0x%02x\n", reg);
if (reg & CHAN_ENA) {
dev_dbg(&pdev->dev,
"Forcibly enabling monitoring (VLM)\n");
pc87360_write_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONFIG,
reg & 0xFE);
}
}
if (data->tempnr) {
reg = pc87360_read_value(data, LD_TEMP, NO_BANK,
PC87365_REG_TEMP_CONFIG);
dev_dbg(&pdev->dev, "bios temp-cfg:0x%02x\n", reg);
if (reg & CHAN_ENA) {
dev_dbg(&pdev->dev,
"Forcibly enabling monitoring (TMS)\n");
pc87360_write_value(data, LD_TEMP, NO_BANK,
PC87365_REG_TEMP_CONFIG,
reg & 0xFE);
}
if (init >= 2) {
/* Chip config as documented by National Semi. */
pc87360_write_value(data, LD_TEMP, 0xF, 0xA, 0x08);
/*
* We voluntarily omit the bank here, in case the
* sequence itself matters. It shouldn't be a problem,
* since nobody else is supposed to access the
* device at that point.
*/
pc87360_write_value(data, LD_TEMP, NO_BANK, 0xB, 0x04);
pc87360_write_value(data, LD_TEMP, NO_BANK, 0xC, 0x35);
pc87360_write_value(data, LD_TEMP, NO_BANK, 0xD, 0x05);
pc87360_write_value(data, LD_TEMP, NO_BANK, 0xE, 0x05);
}
}
}
static int pc87360_probe(struct platform_device *pdev)
{
int i;
struct pc87360_data *data;
int err = 0;
const char *name;
int use_thermistors = 0;
struct device *dev = &pdev->dev;
data = devm_kzalloc(dev, sizeof(struct pc87360_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
switch (devid) {
default:
name = "pc87360";
data->fannr = 2;
break;
case 0xe8:
name = "pc87363";
data->fannr = 2;
break;
case 0xe4:
name = "pc87364";
data->fannr = 3;
break;
case 0xe5:
name = "pc87365";
data->fannr = extra_isa[0] ? 3 : 0;
data->innr = extra_isa[1] ? 11 : 0;
data->tempnr = extra_isa[2] ? 2 : 0;
break;
case 0xe9:
name = "pc87366";
data->fannr = extra_isa[0] ? 3 : 0;
data->innr = extra_isa[1] ? 14 : 0;
data->tempnr = extra_isa[2] ? 3 : 0;
break;
}
data->name = name;
mutex_init(&data->lock);
mutex_init(&data->update_lock);
platform_set_drvdata(pdev, data);
for (i = 0; i < LDNI_MAX; i++) {
data->address[i] = extra_isa[i];
if (data->address[i]
&& !devm_request_region(dev, extra_isa[i], PC87360_EXTENT,
DRIVER_NAME)) {
dev_err(dev,
"Region 0x%x-0x%x already in use!\n",
extra_isa[i], extra_isa[i]+PC87360_EXTENT-1);
return -EBUSY;
}
}
/* Retrieve the fans configuration from Super-I/O space */
if (data->fannr)
data->fan_conf = confreg[0] | (confreg[1] << 8);
/*
* Use the correct reference voltage
* Unless both the VLM and the TMS logical devices agree to
* use an external Vref, the internal one is used.
*/
if (data->innr) {
i = pc87360_read_value(data, LD_IN, NO_BANK,
PC87365_REG_IN_CONFIG);
if (data->tempnr) {
i &= pc87360_read_value(data, LD_TEMP, NO_BANK,
PC87365_REG_TEMP_CONFIG);
}
data->in_vref = (i&0x02) ? 3025 : 2966;
dev_dbg(dev, "Using %s reference voltage\n",
(i&0x02) ? "external" : "internal");
data->vid_conf = confreg[3];
data->vrm = vid_which_vrm();
}
/* Fan clock dividers may be needed before any data is read */
for (i = 0; i < data->fannr; i++) {
if (FAN_CONFIG_MONITOR(data->fan_conf, i))
data->fan_status[i] = pc87360_read_value(data,
LD_FAN, NO_BANK,
PC87360_REG_FAN_STATUS(i));
}
if (init > 0) {
if (devid == 0xe9 && data->address[1]) /* PC87366 */
use_thermistors = confreg[2] & 0x40;
pc87360_init_device(pdev, use_thermistors);
}
/* Register all-or-nothing sysfs groups */
if (data->innr) {
err = sysfs_create_group(&dev->kobj, &pc8736x_vin_group);
if (err)
goto error;
}
if (data->innr == 14) {
err = sysfs_create_group(&dev->kobj, &pc8736x_therm_group);
if (err)
goto error;
}
/* create device attr-files for varying sysfs groups */
if (data->tempnr) {
for (i = 0; i < data->tempnr; i++) {
err = sysfs_create_group(&dev->kobj,
&pc8736x_temp_attr_group[i]);
if (err)
goto error;
}
err = device_create_file(dev, &dev_attr_alarms_temp);
if (err)
goto error;
}
for (i = 0; i < data->fannr; i++) {
if (FAN_CONFIG_MONITOR(data->fan_conf, i)) {
err = sysfs_create_group(&dev->kobj,
&pc8736x_fan_attr_group[i]);
if (err)
goto error;
}
if (FAN_CONFIG_CONTROL(data->fan_conf, i)) {
err = device_create_file(dev, &pwm[i].dev_attr);
if (err)
goto error;
}
}
err = device_create_file(dev, &dev_attr_name);
if (err)
goto error;
data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto error;
}
return 0;
error:
pc87360_remove_files(dev);
return err;
}
static void pc87360_remove(struct platform_device *pdev)
{
struct pc87360_data *data = platform_get_drvdata(pdev);
hwmon_device_unregister(data->hwmon_dev);
pc87360_remove_files(&pdev->dev);
}
/*
* Driver data
*/
static struct platform_driver pc87360_driver = {
.driver = {
.name = DRIVER_NAME,
},
.probe = pc87360_probe,
.remove_new = pc87360_remove,
};
/*
* Device detection, registration and update
*/
static int __init pc87360_find(int sioaddr, u8 *devid,
unsigned short *addresses)
{
u16 val;
int i;
int nrdev; /* logical device count */
/* No superio_enter */
/* Identify device */
val = force_id ? force_id : superio_inb(sioaddr, DEVID);
switch (val) {
case 0xE1: /* PC87360 */
case 0xE8: /* PC87363 */
case 0xE4: /* PC87364 */
nrdev = 1;
break;
case 0xE5: /* PC87365 */
case 0xE9: /* PC87366 */
nrdev = 3;
break;
default:
superio_exit(sioaddr);
return -ENODEV;
}
/* Remember the device id */
*devid = val;
for (i = 0; i < nrdev; i++) {
/* select logical device */
superio_outb(sioaddr, DEV, logdev[i]);
val = superio_inb(sioaddr, ACT);
if (!(val & 0x01)) {
pr_info("Device 0x%02x not activated\n", logdev[i]);
continue;
}
val = (superio_inb(sioaddr, BASE) << 8)
| superio_inb(sioaddr, BASE + 1);
if (!val) {
pr_info("Base address not set for device 0x%02x\n",
logdev[i]);
continue;
}
addresses[i] = val;
if (i == 0) { /* Fans */
confreg[0] = superio_inb(sioaddr, 0xF0);
confreg[1] = superio_inb(sioaddr, 0xF1);
pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 1,
(confreg[0] >> 2) & 1, (confreg[0] >> 3) & 1,
(confreg[0] >> 4) & 1);
pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 2,
(confreg[0] >> 5) & 1, (confreg[0] >> 6) & 1,
(confreg[0] >> 7) & 1);
pr_debug("Fan %d: mon=%d ctrl=%d inv=%d\n", 3,
confreg[1] & 1, (confreg[1] >> 1) & 1,
(confreg[1] >> 2) & 1);
} else if (i == 1) { /* Voltages */
/* Are we using thermistors? */
if (*devid == 0xE9) { /* PC87366 */
/*
* These registers are not logical-device
* specific, just that we won't need them if
* we don't use the VLM device
*/
confreg[2] = superio_inb(sioaddr, 0x2B);
confreg[3] = superio_inb(sioaddr, 0x25);
if (confreg[2] & 0x40) {
pr_info("Using thermistors for temperature monitoring\n");
}
if (confreg[3] & 0xE0) {
pr_info("VID inputs routed (mode %u)\n",
confreg[3] >> 5);
}
}
}
}
superio_exit(sioaddr);
return 0;
}
static int __init pc87360_device_add(unsigned short address)
{
struct resource res[3];
int err, i, res_count;
pdev = platform_device_alloc("pc87360", address);
if (!pdev) {
err = -ENOMEM;
pr_err("Device allocation failed\n");
goto exit;
}
memset(res, 0, 3 * sizeof(struct resource));
res_count = 0;
for (i = 0; i < 3; i++) {
if (!extra_isa[i])
continue;
res[res_count].start = extra_isa[i];
res[res_count].end = extra_isa[i] + PC87360_EXTENT - 1;
res[res_count].name = "pc87360";
res[res_count].flags = IORESOURCE_IO;
err = acpi_check_resource_conflict(&res[res_count]);
if (err)
goto exit_device_put;
res_count++;
}
err = platform_device_add_resources(pdev, res, res_count);
if (err) {
pr_err("Device resources addition failed (%d)\n", err);
goto exit_device_put;
}
err = platform_device_add(pdev);
if (err) {
pr_err("Device addition failed (%d)\n", err);
goto exit_device_put;
}
return 0;
exit_device_put:
platform_device_put(pdev);
exit:
return err;
}
static int __init pc87360_init(void)
{
int err, i;
unsigned short address = 0;
if (pc87360_find(0x2e, &devid, extra_isa)
&& pc87360_find(0x4e, &devid, extra_isa)) {
pr_warn("PC8736x not detected, module not inserted\n");
return -ENODEV;
}
/* Arbitrarily pick one of the addresses */
for (i = 0; i < 3; i++) {
if (extra_isa[i] != 0x0000) {
address = extra_isa[i];
break;
}
}
if (address == 0x0000) {
pr_warn("No active logical device, module not inserted\n");
return -ENODEV;
}
err = platform_driver_register(&pc87360_driver);
if (err)
goto exit;
/* Sets global pdev as a side effect */
err = pc87360_device_add(address);
if (err)
goto exit_driver;
return 0;
exit_driver:
platform_driver_unregister(&pc87360_driver);
exit:
return err;
}
static void __exit pc87360_exit(void)
{
platform_device_unregister(pdev);
platform_driver_unregister(&pc87360_driver);
}
MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
MODULE_DESCRIPTION("PC8736x hardware monitor");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRIVER_NAME);
module_init(pc87360_init);
module_exit(pc87360_exit);
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