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alistair23-linux/drivers/hwmon/lm85.c
Thomas Gleixner 74ba9207e1 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  675 mass ave cambridge ma 02139 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 441 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:36:45 +02:00

1712 lines
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* lm85.c - Part of lm_sensors, Linux kernel modules for hardware
* monitoring
* Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
* Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
* Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
* Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
* Copyright (C) 2007--2014 Jean Delvare <jdelvare@suse.de>
*
* Chip details at <http://www.national.com/ds/LM/LM85.pdf>
*/
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-vid.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/util_macros.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
enum chips {
lm85, lm96000,
adm1027, adt7463, adt7468,
emc6d100, emc6d102, emc6d103, emc6d103s
};
/* The LM85 registers */
#define LM85_REG_IN(nr) (0x20 + (nr))
#define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
#define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
#define LM85_REG_TEMP(nr) (0x25 + (nr))
#define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
#define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
/* Fan speeds are LSB, MSB (2 bytes) */
#define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
#define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
#define LM85_REG_PWM(nr) (0x30 + (nr))
#define LM85_REG_COMPANY 0x3e
#define LM85_REG_VERSTEP 0x3f
#define ADT7468_REG_CFG5 0x7c
#define ADT7468_OFF64 (1 << 0)
#define ADT7468_HFPWM (1 << 1)
#define IS_ADT7468_OFF64(data) \
((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
#define IS_ADT7468_HFPWM(data) \
((data)->type == adt7468 && !((data)->cfg5 & ADT7468_HFPWM))
/* These are the recognized values for the above regs */
#define LM85_COMPANY_NATIONAL 0x01
#define LM85_COMPANY_ANALOG_DEV 0x41
#define LM85_COMPANY_SMSC 0x5c
#define LM85_VERSTEP_LM85C 0x60
#define LM85_VERSTEP_LM85B 0x62
#define LM85_VERSTEP_LM96000_1 0x68
#define LM85_VERSTEP_LM96000_2 0x69
#define LM85_VERSTEP_ADM1027 0x60
#define LM85_VERSTEP_ADT7463 0x62
#define LM85_VERSTEP_ADT7463C 0x6A
#define LM85_VERSTEP_ADT7468_1 0x71
#define LM85_VERSTEP_ADT7468_2 0x72
#define LM85_VERSTEP_EMC6D100_A0 0x60
#define LM85_VERSTEP_EMC6D100_A1 0x61
#define LM85_VERSTEP_EMC6D102 0x65
#define LM85_VERSTEP_EMC6D103_A0 0x68
#define LM85_VERSTEP_EMC6D103_A1 0x69
#define LM85_VERSTEP_EMC6D103S 0x6A /* Also known as EMC6D103:A2 */
#define LM85_REG_CONFIG 0x40
#define LM85_REG_ALARM1 0x41
#define LM85_REG_ALARM2 0x42
#define LM85_REG_VID 0x43
/* Automated FAN control */
#define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
#define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
#define LM85_REG_AFAN_SPIKE1 0x62
#define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
#define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
#define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
#define LM85_REG_AFAN_HYST1 0x6d
#define LM85_REG_AFAN_HYST2 0x6e
#define ADM1027_REG_EXTEND_ADC1 0x76
#define ADM1027_REG_EXTEND_ADC2 0x77
#define EMC6D100_REG_ALARM3 0x7d
/* IN5, IN6 and IN7 */
#define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
#define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
#define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
#define EMC6D102_REG_EXTEND_ADC1 0x85
#define EMC6D102_REG_EXTEND_ADC2 0x86
#define EMC6D102_REG_EXTEND_ADC3 0x87
#define EMC6D102_REG_EXTEND_ADC4 0x88
/*
* Conversions. Rounding and limit checking is only done on the TO_REG
* variants. Note that you should be a bit careful with which arguments
* these macros are called: arguments may be evaluated more than once.
*/
/* IN are scaled according to built-in resistors */
static const int lm85_scaling[] = { /* .001 Volts */
2500, 2250, 3300, 5000, 12000,
3300, 1500, 1800 /*EMC6D100*/
};
#define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
#define INS_TO_REG(n, val) \
SCALE(clamp_val(val, 0, 255 * lm85_scaling[n] / 192), \
lm85_scaling[n], 192)
#define INSEXT_FROM_REG(n, val, ext) \
SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
#define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
/* FAN speed is measured using 90kHz clock */
static inline u16 FAN_TO_REG(unsigned long val)
{
if (!val)
return 0xffff;
return clamp_val(5400000 / val, 1, 0xfffe);
}
#define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
5400000 / (val))
/* Temperature is reported in .001 degC increments */
#define TEMP_TO_REG(val) \
DIV_ROUND_CLOSEST(clamp_val((val), -127000, 127000), 1000)
#define TEMPEXT_FROM_REG(val, ext) \
SCALE(((val) << 4) + (ext), 16, 1000)
#define TEMP_FROM_REG(val) ((val) * 1000)
#define PWM_TO_REG(val) clamp_val(val, 0, 255)
#define PWM_FROM_REG(val) (val)
/*
* ZONEs have the following parameters:
* Limit (low) temp, 1. degC
* Hysteresis (below limit), 1. degC (0-15)
* Range of speed control, .1 degC (2-80)
* Critical (high) temp, 1. degC
*
* FAN PWMs have the following parameters:
* Reference Zone, 1, 2, 3, etc.
* Spinup time, .05 sec
* PWM value at limit/low temp, 1 count
* PWM Frequency, 1. Hz
* PWM is Min or OFF below limit, flag
* Invert PWM output, flag
*
* Some chips filter the temp, others the fan.
* Filter constant (or disabled) .1 seconds
*/
/* These are the zone temperature range encodings in .001 degree C */
static const int lm85_range_map[] = {
2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
};
static int RANGE_TO_REG(long range)
{
return find_closest(range, lm85_range_map, ARRAY_SIZE(lm85_range_map));
}
#define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
/* These are the PWM frequency encodings */
static const int lm85_freq_map[] = { /* 1 Hz */
10, 15, 23, 30, 38, 47, 61, 94
};
static const int lm96000_freq_map[] = { /* 1 Hz */
10, 15, 23, 30, 38, 47, 61, 94,
22500, 24000, 25700, 25700, 27700, 27700, 30000, 30000
};
static const int adm1027_freq_map[] = { /* 1 Hz */
11, 15, 22, 29, 35, 44, 59, 88
};
static int FREQ_TO_REG(const int *map,
unsigned int map_size, unsigned long freq)
{
return find_closest(freq, map, map_size);
}
static int FREQ_FROM_REG(const int *map, unsigned int map_size, u8 reg)
{
return map[reg % map_size];
}
/*
* Since we can't use strings, I'm abusing these numbers
* to stand in for the following meanings:
* 1 -- PWM responds to Zone 1
* 2 -- PWM responds to Zone 2
* 3 -- PWM responds to Zone 3
* 23 -- PWM responds to the higher temp of Zone 2 or 3
* 123 -- PWM responds to highest of Zone 1, 2, or 3
* 0 -- PWM is always at 0% (ie, off)
* -1 -- PWM is always at 100%
* -2 -- PWM responds to manual control
*/
static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
#define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
static int ZONE_TO_REG(int zone)
{
int i;
for (i = 0; i <= 7; ++i)
if (zone == lm85_zone_map[i])
break;
if (i > 7) /* Not found. */
i = 3; /* Always 100% */
return i << 5;
}
#define HYST_TO_REG(val) clamp_val(((val) + 500) / 1000, 0, 15)
#define HYST_FROM_REG(val) ((val) * 1000)
/*
* Chip sampling rates
*
* Some sensors are not updated more frequently than once per second
* so it doesn't make sense to read them more often than that.
* We cache the results and return the saved data if the driver
* is called again before a second has elapsed.
*
* Also, there is significant configuration data for this chip
* given the automatic PWM fan control that is possible. There
* are about 47 bytes of config data to only 22 bytes of actual
* readings. So, we keep the config data up to date in the cache
* when it is written and only sample it once every 1 *minute*
*/
#define LM85_DATA_INTERVAL (HZ + HZ / 2)
#define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
/*
* LM85 can automatically adjust fan speeds based on temperature
* This structure encapsulates an entire Zone config. There are
* three zones (one for each temperature input) on the lm85
*/
struct lm85_zone {
s8 limit; /* Low temp limit */
u8 hyst; /* Low limit hysteresis. (0-15) */
u8 range; /* Temp range, encoded */
s8 critical; /* "All fans ON" temp limit */
u8 max_desired; /*
* Actual "max" temperature specified. Preserved
* to prevent "drift" as other autofan control
* values change.
*/
};
struct lm85_autofan {
u8 config; /* Register value */
u8 min_pwm; /* Minimum PWM value, encoded */
u8 min_off; /* Min PWM or OFF below "limit", flag */
};
/*
* For each registered chip, we need to keep some data in memory.
* The structure is dynamically allocated.
*/
struct lm85_data {
struct i2c_client *client;
const struct attribute_group *groups[6];
const int *freq_map;
unsigned int freq_map_size;
enum chips type;
bool has_vid5; /* true if VID5 is configured for ADT7463 or ADT7468 */
struct mutex update_lock;
int valid; /* !=0 if following fields are valid */
unsigned long last_reading; /* In jiffies */
unsigned long last_config; /* In jiffies */
u8 in[8]; /* Register value */
u8 in_max[8]; /* Register value */
u8 in_min[8]; /* Register value */
s8 temp[3]; /* Register value */
s8 temp_min[3]; /* Register value */
s8 temp_max[3]; /* Register value */
u16 fan[4]; /* Register value */
u16 fan_min[4]; /* Register value */
u8 pwm[3]; /* Register value */
u8 pwm_freq[3]; /* Register encoding */
u8 temp_ext[3]; /* Decoded values */
u8 in_ext[8]; /* Decoded values */
u8 vid; /* Register value */
u8 vrm; /* VRM version */
u32 alarms; /* Register encoding, combined */
u8 cfg5; /* Config Register 5 on ADT7468 */
struct lm85_autofan autofan[3];
struct lm85_zone zone[3];
};
static int lm85_read_value(struct i2c_client *client, u8 reg)
{
int res;
/* What size location is it? */
switch (reg) {
case LM85_REG_FAN(0): /* Read WORD data */
case LM85_REG_FAN(1):
case LM85_REG_FAN(2):
case LM85_REG_FAN(3):
case LM85_REG_FAN_MIN(0):
case LM85_REG_FAN_MIN(1):
case LM85_REG_FAN_MIN(2):
case LM85_REG_FAN_MIN(3):
case LM85_REG_ALARM1: /* Read both bytes at once */
res = i2c_smbus_read_byte_data(client, reg) & 0xff;
res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
break;
default: /* Read BYTE data */
res = i2c_smbus_read_byte_data(client, reg);
break;
}
return res;
}
static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
{
switch (reg) {
case LM85_REG_FAN(0): /* Write WORD data */
case LM85_REG_FAN(1):
case LM85_REG_FAN(2):
case LM85_REG_FAN(3):
case LM85_REG_FAN_MIN(0):
case LM85_REG_FAN_MIN(1):
case LM85_REG_FAN_MIN(2):
case LM85_REG_FAN_MIN(3):
/* NOTE: ALARM is read only, so not included here */
i2c_smbus_write_byte_data(client, reg, value & 0xff);
i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
break;
default: /* Write BYTE data */
i2c_smbus_write_byte_data(client, reg, value);
break;
}
}
static struct lm85_data *lm85_update_device(struct device *dev)
{
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int i;
mutex_lock(&data->update_lock);
if (!data->valid ||
time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
/* Things that change quickly */
dev_dbg(&client->dev, "Reading sensor values\n");
/*
* Have to read extended bits first to "freeze" the
* more significant bits that are read later.
* There are 2 additional resolution bits per channel and we
* have room for 4, so we shift them to the left.
*/
if (data->type == adm1027 || data->type == adt7463 ||
data->type == adt7468) {
int ext1 = lm85_read_value(client,
ADM1027_REG_EXTEND_ADC1);
int ext2 = lm85_read_value(client,
ADM1027_REG_EXTEND_ADC2);
int val = (ext1 << 8) + ext2;
for (i = 0; i <= 4; i++)
data->in_ext[i] =
((val >> (i * 2)) & 0x03) << 2;
for (i = 0; i <= 2; i++)
data->temp_ext[i] =
(val >> ((i + 4) * 2)) & 0x0c;
}
data->vid = lm85_read_value(client, LM85_REG_VID);
for (i = 0; i <= 3; ++i) {
data->in[i] =
lm85_read_value(client, LM85_REG_IN(i));
data->fan[i] =
lm85_read_value(client, LM85_REG_FAN(i));
}
if (!data->has_vid5)
data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
if (data->type == adt7468)
data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
for (i = 0; i <= 2; ++i) {
data->temp[i] =
lm85_read_value(client, LM85_REG_TEMP(i));
data->pwm[i] =
lm85_read_value(client, LM85_REG_PWM(i));
if (IS_ADT7468_OFF64(data))
data->temp[i] -= 64;
}
data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
if (data->type == emc6d100) {
/* Three more voltage sensors */
for (i = 5; i <= 7; ++i) {
data->in[i] = lm85_read_value(client,
EMC6D100_REG_IN(i));
}
/* More alarm bits */
data->alarms |= lm85_read_value(client,
EMC6D100_REG_ALARM3) << 16;
} else if (data->type == emc6d102 || data->type == emc6d103 ||
data->type == emc6d103s) {
/*
* Have to read LSB bits after the MSB ones because
* the reading of the MSB bits has frozen the
* LSBs (backward from the ADM1027).
*/
int ext1 = lm85_read_value(client,
EMC6D102_REG_EXTEND_ADC1);
int ext2 = lm85_read_value(client,
EMC6D102_REG_EXTEND_ADC2);
int ext3 = lm85_read_value(client,
EMC6D102_REG_EXTEND_ADC3);
int ext4 = lm85_read_value(client,
EMC6D102_REG_EXTEND_ADC4);
data->in_ext[0] = ext3 & 0x0f;
data->in_ext[1] = ext4 & 0x0f;
data->in_ext[2] = ext4 >> 4;
data->in_ext[3] = ext3 >> 4;
data->in_ext[4] = ext2 >> 4;
data->temp_ext[0] = ext1 & 0x0f;
data->temp_ext[1] = ext2 & 0x0f;
data->temp_ext[2] = ext1 >> 4;
}
data->last_reading = jiffies;
} /* last_reading */
if (!data->valid ||
time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
/* Things that don't change often */
dev_dbg(&client->dev, "Reading config values\n");
for (i = 0; i <= 3; ++i) {
data->in_min[i] =
lm85_read_value(client, LM85_REG_IN_MIN(i));
data->in_max[i] =
lm85_read_value(client, LM85_REG_IN_MAX(i));
data->fan_min[i] =
lm85_read_value(client, LM85_REG_FAN_MIN(i));
}
if (!data->has_vid5) {
data->in_min[4] = lm85_read_value(client,
LM85_REG_IN_MIN(4));
data->in_max[4] = lm85_read_value(client,
LM85_REG_IN_MAX(4));
}
if (data->type == emc6d100) {
for (i = 5; i <= 7; ++i) {
data->in_min[i] = lm85_read_value(client,
EMC6D100_REG_IN_MIN(i));
data->in_max[i] = lm85_read_value(client,
EMC6D100_REG_IN_MAX(i));
}
}
for (i = 0; i <= 2; ++i) {
int val;
data->temp_min[i] =
lm85_read_value(client, LM85_REG_TEMP_MIN(i));
data->temp_max[i] =
lm85_read_value(client, LM85_REG_TEMP_MAX(i));
data->autofan[i].config =
lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
data->pwm_freq[i] = val % data->freq_map_size;
data->zone[i].range = val >> 4;
data->autofan[i].min_pwm =
lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
data->zone[i].limit =
lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
data->zone[i].critical =
lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
if (IS_ADT7468_OFF64(data)) {
data->temp_min[i] -= 64;
data->temp_max[i] -= 64;
data->zone[i].limit -= 64;
data->zone[i].critical -= 64;
}
}
if (data->type != emc6d103s) {
i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
data->autofan[0].min_off = (i & 0x20) != 0;
data->autofan[1].min_off = (i & 0x40) != 0;
data->autofan[2].min_off = (i & 0x80) != 0;
i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
data->zone[0].hyst = i >> 4;
data->zone[1].hyst = i & 0x0f;
i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
data->zone[2].hyst = i >> 4;
}
data->last_config = jiffies;
} /* last_config */
data->valid = 1;
mutex_unlock(&data->update_lock);
return data;
}
/* 4 Fans */
static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
}
static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
}
static ssize_t fan_min_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->fan_min[nr] = FAN_TO_REG(val);
lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static SENSOR_DEVICE_ATTR_RO(fan1_input, fan, 0);
static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0);
static SENSOR_DEVICE_ATTR_RO(fan2_input, fan, 1);
static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1);
static SENSOR_DEVICE_ATTR_RO(fan3_input, fan, 2);
static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2);
static SENSOR_DEVICE_ATTR_RO(fan4_input, fan, 3);
static SENSOR_DEVICE_ATTR_RW(fan4_min, fan_min, 3);
/* vid, vrm, alarms */
static ssize_t cpu0_vid_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct lm85_data *data = lm85_update_device(dev);
int vid;
if (data->has_vid5) {
/* 6-pin VID (VRM 10) */
vid = vid_from_reg(data->vid & 0x3f, data->vrm);
} else {
/* 5-pin VID (VRM 9) */
vid = vid_from_reg(data->vid & 0x1f, data->vrm);
}
return sprintf(buf, "%d\n", vid);
}
static DEVICE_ATTR_RO(cpu0_vid);
static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct lm85_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%ld\n", (long) data->vrm);
}
static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct lm85_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_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%u\n", data->alarms);
}
static DEVICE_ATTR_RO(alarms);
static ssize_t alarm_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
}
static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0);
static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1);
static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2);
static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3);
static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 8);
static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 18);
static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 16);
static SENSOR_DEVICE_ATTR_RO(in7_alarm, alarm, 17);
static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4);
static SENSOR_DEVICE_ATTR_RO(temp1_fault, alarm, 14);
static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 5);
static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 6);
static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 15);
static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 10);
static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 11);
static SENSOR_DEVICE_ATTR_RO(fan3_alarm, alarm, 12);
static SENSOR_DEVICE_ATTR_RO(fan4_alarm, alarm, 13);
/* pwm */
static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
}
static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->pwm[nr] = PWM_TO_REG(val);
lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t pwm_enable_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
int pwm_zone, enable;
pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
switch (pwm_zone) {
case -1: /* PWM is always at 100% */
enable = 0;
break;
case 0: /* PWM is always at 0% */
case -2: /* PWM responds to manual control */
enable = 1;
break;
default: /* PWM in automatic mode */
enable = 2;
}
return sprintf(buf, "%d\n", enable);
}
static ssize_t pwm_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
u8 config;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
switch (val) {
case 0:
config = 3;
break;
case 1:
config = 7;
break;
case 2:
/*
* Here we have to choose arbitrarily one of the 5 possible
* configurations; I go for the safest
*/
config = 6;
break;
default:
return -EINVAL;
}
mutex_lock(&data->update_lock);
data->autofan[nr].config = lm85_read_value(client,
LM85_REG_AFAN_CONFIG(nr));
data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
| (config << 5);
lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
data->autofan[nr].config);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t pwm_freq_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
int freq;
if (IS_ADT7468_HFPWM(data))
freq = 22500;
else
freq = FREQ_FROM_REG(data->freq_map, data->freq_map_size,
data->pwm_freq[nr]);
return sprintf(buf, "%d\n", freq);
}
static ssize_t pwm_freq_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
/*
* The ADT7468 has a special high-frequency PWM output mode,
* where all PWM outputs are driven by a 22.5 kHz clock.
* This might confuse the user, but there's not much we can do.
*/
if (data->type == adt7468 && val >= 11300) { /* High freq. mode */
data->cfg5 &= ~ADT7468_HFPWM;
lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
} else { /* Low freq. mode */
data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map,
data->freq_map_size, val);
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
(data->zone[nr].range << 4)
| data->pwm_freq[nr]);
if (data->type == adt7468) {
data->cfg5 |= ADT7468_HFPWM;
lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
}
}
mutex_unlock(&data->update_lock);
return count;
}
static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0);
static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0);
static SENSOR_DEVICE_ATTR_RW(pwm1_freq, pwm_freq, 0);
static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1);
static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1);
static SENSOR_DEVICE_ATTR_RW(pwm2_freq, pwm_freq, 1);
static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, 2);
static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_enable, 2);
static SENSOR_DEVICE_ATTR_RW(pwm3_freq, pwm_freq, 2);
/* Voltages */
static ssize_t in_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
data->in_ext[nr]));
}
static ssize_t in_min_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
}
static ssize_t in_min_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->in_min[nr] = INS_TO_REG(nr, val);
lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t in_max_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
}
static ssize_t in_max_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->in_max[nr] = INS_TO_REG(nr, val);
lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static SENSOR_DEVICE_ATTR_RO(in0_input, in, 0);
static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0);
static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0);
static SENSOR_DEVICE_ATTR_RO(in1_input, in, 1);
static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1);
static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1);
static SENSOR_DEVICE_ATTR_RO(in2_input, in, 2);
static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2);
static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2);
static SENSOR_DEVICE_ATTR_RO(in3_input, in, 3);
static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3);
static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3);
static SENSOR_DEVICE_ATTR_RO(in4_input, in, 4);
static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4);
static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4);
static SENSOR_DEVICE_ATTR_RO(in5_input, in, 5);
static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5);
static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5);
static SENSOR_DEVICE_ATTR_RO(in6_input, in, 6);
static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6);
static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6);
static SENSOR_DEVICE_ATTR_RO(in7_input, in, 7);
static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 7);
static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 7);
/* Temps */
static ssize_t temp_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
data->temp_ext[nr]));
}
static ssize_t temp_min_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
}
static ssize_t temp_min_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
if (IS_ADT7468_OFF64(data))
val += 64;
mutex_lock(&data->update_lock);
data->temp_min[nr] = TEMP_TO_REG(val);
lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t temp_max_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
}
static ssize_t temp_max_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
if (IS_ADT7468_OFF64(data))
val += 64;
mutex_lock(&data->update_lock);
data->temp_max[nr] = TEMP_TO_REG(val);
lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0);
static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_min, 0);
static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1);
static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_min, 1);
static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2);
static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_min, 2);
static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_max, 2);
/* Automatic PWM control */
static ssize_t pwm_auto_channels_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
}
static ssize_t pwm_auto_channels_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
| ZONE_TO_REG(val);
lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
data->autofan[nr].config);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t pwm_auto_pwm_min_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
}
static ssize_t pwm_auto_pwm_min_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->autofan[nr].min_pwm = PWM_TO_REG(val);
lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
data->autofan[nr].min_pwm);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t pwm_auto_pwm_minctl_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", data->autofan[nr].min_off);
}
static ssize_t pwm_auto_pwm_minctl_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
u8 tmp;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->autofan[nr].min_off = val;
tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
tmp &= ~(0x20 << nr);
if (data->autofan[nr].min_off)
tmp |= 0x20 << nr;
lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
mutex_unlock(&data->update_lock);
return count;
}
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_channels, pwm_auto_channels, 0);
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_pwm_min, pwm_auto_pwm_min, 0);
static SENSOR_DEVICE_ATTR_RW(pwm1_auto_pwm_minctl, pwm_auto_pwm_minctl, 0);
static SENSOR_DEVICE_ATTR_RW(pwm2_auto_channels, pwm_auto_channels, 1);
static SENSOR_DEVICE_ATTR_RW(pwm2_auto_pwm_min, pwm_auto_pwm_min, 1);
static SENSOR_DEVICE_ATTR_RW(pwm2_auto_pwm_minctl, pwm_auto_pwm_minctl, 1);
static SENSOR_DEVICE_ATTR_RW(pwm3_auto_channels, pwm_auto_channels, 2);
static SENSOR_DEVICE_ATTR_RW(pwm3_auto_pwm_min, pwm_auto_pwm_min, 2);
static SENSOR_DEVICE_ATTR_RW(pwm3_auto_pwm_minctl, pwm_auto_pwm_minctl, 2);
/* Temperature settings for automatic PWM control */
static ssize_t temp_auto_temp_off_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
HYST_FROM_REG(data->zone[nr].hyst));
}
static ssize_t temp_auto_temp_off_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int min;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
min = TEMP_FROM_REG(data->zone[nr].limit);
data->zone[nr].hyst = HYST_TO_REG(min - val);
if (nr == 0 || nr == 1) {
lm85_write_value(client, LM85_REG_AFAN_HYST1,
(data->zone[0].hyst << 4)
| data->zone[1].hyst);
} else {
lm85_write_value(client, LM85_REG_AFAN_HYST2,
(data->zone[2].hyst << 4));
}
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t temp_auto_temp_min_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
}
static ssize_t temp_auto_temp_min_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->zone[nr].limit = TEMP_TO_REG(val);
lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
data->zone[nr].limit);
/* Update temp_auto_max and temp_auto_range */
data->zone[nr].range = RANGE_TO_REG(
TEMP_FROM_REG(data->zone[nr].max_desired) -
TEMP_FROM_REG(data->zone[nr].limit));
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
((data->zone[nr].range & 0x0f) << 4)
| data->pwm_freq[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t temp_auto_temp_max_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
RANGE_FROM_REG(data->zone[nr].range));
}
static ssize_t temp_auto_temp_max_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int min;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
min = TEMP_FROM_REG(data->zone[nr].limit);
data->zone[nr].max_desired = TEMP_TO_REG(val);
data->zone[nr].range = RANGE_TO_REG(
val - min);
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
((data->zone[nr].range & 0x0f) << 4)
| data->pwm_freq[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t temp_auto_temp_crit_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = lm85_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
}
static ssize_t temp_auto_temp_crit_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int nr = to_sensor_dev_attr(attr)->index;
struct lm85_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->zone[nr].critical = TEMP_TO_REG(val);
lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
data->zone[nr].critical);
mutex_unlock(&data->update_lock);
return count;
}
static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_off, temp_auto_temp_off, 0);
static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_min, temp_auto_temp_min, 0);
static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_max, temp_auto_temp_max, 0);
static SENSOR_DEVICE_ATTR_RW(temp1_auto_temp_crit, temp_auto_temp_crit, 0);
static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_off, temp_auto_temp_off, 1);
static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_min, temp_auto_temp_min, 1);
static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_max, temp_auto_temp_max, 1);
static SENSOR_DEVICE_ATTR_RW(temp2_auto_temp_crit, temp_auto_temp_crit, 1);
static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_off, temp_auto_temp_off, 2);
static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_min, temp_auto_temp_min, 2);
static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_max, temp_auto_temp_max, 2);
static SENSOR_DEVICE_ATTR_RW(temp3_auto_temp_crit, temp_auto_temp_crit, 2);
static struct attribute *lm85_attributes[] = {
&sensor_dev_attr_fan1_input.dev_attr.attr,
&sensor_dev_attr_fan2_input.dev_attr.attr,
&sensor_dev_attr_fan3_input.dev_attr.attr,
&sensor_dev_attr_fan4_input.dev_attr.attr,
&sensor_dev_attr_fan1_min.dev_attr.attr,
&sensor_dev_attr_fan2_min.dev_attr.attr,
&sensor_dev_attr_fan3_min.dev_attr.attr,
&sensor_dev_attr_fan4_min.dev_attr.attr,
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
&sensor_dev_attr_fan4_alarm.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
&sensor_dev_attr_pwm3.dev_attr.attr,
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
&sensor_dev_attr_pwm1_freq.dev_attr.attr,
&sensor_dev_attr_pwm2_freq.dev_attr.attr,
&sensor_dev_attr_pwm3_freq.dev_attr.attr,
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in2_input.dev_attr.attr,
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_in0_min.dev_attr.attr,
&sensor_dev_attr_in1_min.dev_attr.attr,
&sensor_dev_attr_in2_min.dev_attr.attr,
&sensor_dev_attr_in3_min.dev_attr.attr,
&sensor_dev_attr_in0_max.dev_attr.attr,
&sensor_dev_attr_in1_max.dev_attr.attr,
&sensor_dev_attr_in2_max.dev_attr.attr,
&sensor_dev_attr_in3_max.dev_attr.attr,
&sensor_dev_attr_in0_alarm.dev_attr.attr,
&sensor_dev_attr_in1_alarm.dev_attr.attr,
&sensor_dev_attr_in2_alarm.dev_attr.attr,
&sensor_dev_attr_in3_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp3_input.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
&sensor_dev_attr_temp3_min.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp3_max.dev_attr.attr,
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
&sensor_dev_attr_temp3_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_fault.dev_attr.attr,
&sensor_dev_attr_temp3_fault.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
&sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
&sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
&sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
&sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
&sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
&sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
&sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
&sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
&sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
&dev_attr_vrm.attr,
&dev_attr_cpu0_vid.attr,
&dev_attr_alarms.attr,
NULL
};
static const struct attribute_group lm85_group = {
.attrs = lm85_attributes,
};
static struct attribute *lm85_attributes_minctl[] = {
&sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
NULL
};
static const struct attribute_group lm85_group_minctl = {
.attrs = lm85_attributes_minctl,
};
static struct attribute *lm85_attributes_temp_off[] = {
&sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
&sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
&sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
NULL
};
static const struct attribute_group lm85_group_temp_off = {
.attrs = lm85_attributes_temp_off,
};
static struct attribute *lm85_attributes_in4[] = {
&sensor_dev_attr_in4_input.dev_attr.attr,
&sensor_dev_attr_in4_min.dev_attr.attr,
&sensor_dev_attr_in4_max.dev_attr.attr,
&sensor_dev_attr_in4_alarm.dev_attr.attr,
NULL
};
static const struct attribute_group lm85_group_in4 = {
.attrs = lm85_attributes_in4,
};
static struct attribute *lm85_attributes_in567[] = {
&sensor_dev_attr_in5_input.dev_attr.attr,
&sensor_dev_attr_in6_input.dev_attr.attr,
&sensor_dev_attr_in7_input.dev_attr.attr,
&sensor_dev_attr_in5_min.dev_attr.attr,
&sensor_dev_attr_in6_min.dev_attr.attr,
&sensor_dev_attr_in7_min.dev_attr.attr,
&sensor_dev_attr_in5_max.dev_attr.attr,
&sensor_dev_attr_in6_max.dev_attr.attr,
&sensor_dev_attr_in7_max.dev_attr.attr,
&sensor_dev_attr_in5_alarm.dev_attr.attr,
&sensor_dev_attr_in6_alarm.dev_attr.attr,
&sensor_dev_attr_in7_alarm.dev_attr.attr,
NULL
};
static const struct attribute_group lm85_group_in567 = {
.attrs = lm85_attributes_in567,
};
static void lm85_init_client(struct i2c_client *client)
{
int value;
/* Start monitoring if needed */
value = lm85_read_value(client, LM85_REG_CONFIG);
if (!(value & 0x01)) {
dev_info(&client->dev, "Starting monitoring\n");
lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
}
/* Warn about unusual configuration bits */
if (value & 0x02)
dev_warn(&client->dev, "Device configuration is locked\n");
if (!(value & 0x04))
dev_warn(&client->dev, "Device is not ready\n");
}
static int lm85_is_fake(struct i2c_client *client)
{
/*
* Differenciate between real LM96000 and Winbond WPCD377I. The latter
* emulate the former except that it has no hardware monitoring function
* so the readings are always 0.
*/
int i;
u8 in_temp, fan;
for (i = 0; i < 8; i++) {
in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
fan = i2c_smbus_read_byte_data(client, 0x28 + i);
if (in_temp != 0x00 || fan != 0xff)
return 0;
}
return 1;
}
/* Return 0 if detection is successful, -ENODEV otherwise */
static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
{
struct i2c_adapter *adapter = client->adapter;
int address = client->addr;
const char *type_name = NULL;
int company, verstep;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
/* We need to be able to do byte I/O */
return -ENODEV;
}
/* Determine the chip type */
company = lm85_read_value(client, LM85_REG_COMPANY);
verstep = lm85_read_value(client, LM85_REG_VERSTEP);
dev_dbg(&adapter->dev,
"Detecting device at 0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
address, company, verstep);
if (company == LM85_COMPANY_NATIONAL) {
switch (verstep) {
case LM85_VERSTEP_LM85C:
type_name = "lm85c";
break;
case LM85_VERSTEP_LM85B:
type_name = "lm85b";
break;
case LM85_VERSTEP_LM96000_1:
case LM85_VERSTEP_LM96000_2:
/* Check for Winbond WPCD377I */
if (lm85_is_fake(client)) {
dev_dbg(&adapter->dev,
"Found Winbond WPCD377I, ignoring\n");
return -ENODEV;
}
type_name = "lm96000";
break;
}
} else if (company == LM85_COMPANY_ANALOG_DEV) {
switch (verstep) {
case LM85_VERSTEP_ADM1027:
type_name = "adm1027";
break;
case LM85_VERSTEP_ADT7463:
case LM85_VERSTEP_ADT7463C:
type_name = "adt7463";
break;
case LM85_VERSTEP_ADT7468_1:
case LM85_VERSTEP_ADT7468_2:
type_name = "adt7468";
break;
}
} else if (company == LM85_COMPANY_SMSC) {
switch (verstep) {
case LM85_VERSTEP_EMC6D100_A0:
case LM85_VERSTEP_EMC6D100_A1:
/* Note: we can't tell a '100 from a '101 */
type_name = "emc6d100";
break;
case LM85_VERSTEP_EMC6D102:
type_name = "emc6d102";
break;
case LM85_VERSTEP_EMC6D103_A0:
case LM85_VERSTEP_EMC6D103_A1:
type_name = "emc6d103";
break;
case LM85_VERSTEP_EMC6D103S:
type_name = "emc6d103s";
break;
}
}
if (!type_name)
return -ENODEV;
strlcpy(info->type, type_name, I2C_NAME_SIZE);
return 0;
}
static int lm85_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device *hwmon_dev;
struct lm85_data *data;
int idx = 0;
data = devm_kzalloc(dev, sizeof(struct lm85_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->client = client;
if (client->dev.of_node)
data->type = (enum chips)of_device_get_match_data(&client->dev);
else
data->type = id->driver_data;
mutex_init(&data->update_lock);
/* Fill in the chip specific driver values */
switch (data->type) {
case adm1027:
case adt7463:
case adt7468:
case emc6d100:
case emc6d102:
case emc6d103:
case emc6d103s:
data->freq_map = adm1027_freq_map;
data->freq_map_size = ARRAY_SIZE(adm1027_freq_map);
break;
case lm96000:
data->freq_map = lm96000_freq_map;
data->freq_map_size = ARRAY_SIZE(lm96000_freq_map);
break;
default:
data->freq_map = lm85_freq_map;
data->freq_map_size = ARRAY_SIZE(lm85_freq_map);
}
/* Set the VRM version */
data->vrm = vid_which_vrm();
/* Initialize the LM85 chip */
lm85_init_client(client);
/* sysfs hooks */
data->groups[idx++] = &lm85_group;
/* minctl and temp_off exist on all chips except emc6d103s */
if (data->type != emc6d103s) {
data->groups[idx++] = &lm85_group_minctl;
data->groups[idx++] = &lm85_group_temp_off;
}
/*
* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
* as a sixth digital VID input rather than an analog input.
*/
if (data->type == adt7463 || data->type == adt7468) {
u8 vid = lm85_read_value(client, LM85_REG_VID);
if (vid & 0x80)
data->has_vid5 = true;
}
if (!data->has_vid5)
data->groups[idx++] = &lm85_group_in4;
/* The EMC6D100 has 3 additional voltage inputs */
if (data->type == emc6d100)
data->groups[idx++] = &lm85_group_in567;
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
data, data->groups);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id lm85_id[] = {
{ "adm1027", adm1027 },
{ "adt7463", adt7463 },
{ "adt7468", adt7468 },
{ "lm85", lm85 },
{ "lm85b", lm85 },
{ "lm85c", lm85 },
{ "lm96000", lm96000 },
{ "emc6d100", emc6d100 },
{ "emc6d101", emc6d100 },
{ "emc6d102", emc6d102 },
{ "emc6d103", emc6d103 },
{ "emc6d103s", emc6d103s },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm85_id);
static const struct of_device_id __maybe_unused lm85_of_match[] = {
{
.compatible = "adi,adm1027",
.data = (void *)adm1027
},
{
.compatible = "adi,adt7463",
.data = (void *)adt7463
},
{
.compatible = "adi,adt7468",
.data = (void *)adt7468
},
{
.compatible = "national,lm85",
.data = (void *)lm85
},
{
.compatible = "national,lm85b",
.data = (void *)lm85
},
{
.compatible = "national,lm85c",
.data = (void *)lm85
},
{
.compatible = "ti,lm96000",
.data = (void *)lm96000
},
{
.compatible = "smsc,emc6d100",
.data = (void *)emc6d100
},
{
.compatible = "smsc,emc6d101",
.data = (void *)emc6d100
},
{
.compatible = "smsc,emc6d102",
.data = (void *)emc6d102
},
{
.compatible = "smsc,emc6d103",
.data = (void *)emc6d103
},
{
.compatible = "smsc,emc6d103s",
.data = (void *)emc6d103s
},
{ },
};
MODULE_DEVICE_TABLE(of, lm85_of_match);
static struct i2c_driver lm85_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "lm85",
.of_match_table = of_match_ptr(lm85_of_match),
},
.probe = lm85_probe,
.id_table = lm85_id,
.detect = lm85_detect,
.address_list = normal_i2c,
};
module_i2c_driver(lm85_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
"Margit Schubert-While <margitsw@t-online.de>, "
"Justin Thiessen <jthiessen@penguincomputing.com>");
MODULE_DESCRIPTION("LM85-B, LM85-C driver");
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