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adm1026.c
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adm1026.c
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/*
* adm1026.c - Part of lm_sensors, Linux kernel modules for hardware
* monitoring
* Copyright (C) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
* Copyright (C) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
*
* Chip details at:
*
* <http://www.onsemi.com/PowerSolutions/product.do?id=ADM1026>
*
* 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.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
static int gpio_input[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_output[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_inverted[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_normal[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_fan[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
module_param_array(gpio_input, int, NULL, 0);
MODULE_PARM_DESC(gpio_input, "List of GPIO pins (0-16) to program as inputs");
module_param_array(gpio_output, int, NULL, 0);
MODULE_PARM_DESC(gpio_output,
"List of GPIO pins (0-16) to program as outputs");
module_param_array(gpio_inverted, int, NULL, 0);
MODULE_PARM_DESC(gpio_inverted,
"List of GPIO pins (0-16) to program as inverted");
module_param_array(gpio_normal, int, NULL, 0);
MODULE_PARM_DESC(gpio_normal,
"List of GPIO pins (0-16) to program as normal/non-inverted");
module_param_array(gpio_fan, int, NULL, 0);
MODULE_PARM_DESC(gpio_fan, "List of GPIO pins (0-7) to program as fan tachs");
/* Many ADM1026 constants specified below */
/* The ADM1026 registers */
#define ADM1026_REG_CONFIG1 0x00
#define CFG1_MONITOR 0x01
#define CFG1_INT_ENABLE 0x02
#define CFG1_INT_CLEAR 0x04
#define CFG1_AIN8_9 0x08
#define CFG1_THERM_HOT 0x10
#define CFG1_DAC_AFC 0x20
#define CFG1_PWM_AFC 0x40
#define CFG1_RESET 0x80
#define ADM1026_REG_CONFIG2 0x01
/* CONFIG2 controls FAN0/GPIO0 through FAN7/GPIO7 */
#define ADM1026_REG_CONFIG3 0x07
#define CFG3_GPIO16_ENABLE 0x01
#define CFG3_CI_CLEAR 0x02
#define CFG3_VREF_250 0x04
#define CFG3_GPIO16_DIR 0x40
#define CFG3_GPIO16_POL 0x80
#define ADM1026_REG_E2CONFIG 0x13
#define E2CFG_READ 0x01
#define E2CFG_WRITE 0x02
#define E2CFG_ERASE 0x04
#define E2CFG_ROM 0x08
#define E2CFG_CLK_EXT 0x80
/*
* There are 10 general analog inputs and 7 dedicated inputs
* They are:
* 0 - 9 = AIN0 - AIN9
* 10 = Vbat
* 11 = 3.3V Standby
* 12 = 3.3V Main
* 13 = +5V
* 14 = Vccp (CPU core voltage)
* 15 = +12V
* 16 = -12V
*/
static u16 ADM1026_REG_IN[] = {
0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
0x36, 0x37, 0x27, 0x29, 0x26, 0x2a,
0x2b, 0x2c, 0x2d, 0x2e, 0x2f
};
static u16 ADM1026_REG_IN_MIN[] = {
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d,
0x5e, 0x5f, 0x6d, 0x49, 0x6b, 0x4a,
0x4b, 0x4c, 0x4d, 0x4e, 0x4f
};
static u16 ADM1026_REG_IN_MAX[] = {
0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
0x56, 0x57, 0x6c, 0x41, 0x6a, 0x42,
0x43, 0x44, 0x45, 0x46, 0x47
};
/*
* Temperatures are:
* 0 - Internal
* 1 - External 1
* 2 - External 2
*/
static u16 ADM1026_REG_TEMP[] = { 0x1f, 0x28, 0x29 };
static u16 ADM1026_REG_TEMP_MIN[] = { 0x69, 0x48, 0x49 };
static u16 ADM1026_REG_TEMP_MAX[] = { 0x68, 0x40, 0x41 };
static u16 ADM1026_REG_TEMP_TMIN[] = { 0x10, 0x11, 0x12 };
static u16 ADM1026_REG_TEMP_THERM[] = { 0x0d, 0x0e, 0x0f };
static u16 ADM1026_REG_TEMP_OFFSET[] = { 0x1e, 0x6e, 0x6f };
#define ADM1026_REG_FAN(nr) (0x38 + (nr))
#define ADM1026_REG_FAN_MIN(nr) (0x60 + (nr))
#define ADM1026_REG_FAN_DIV_0_3 0x02
#define ADM1026_REG_FAN_DIV_4_7 0x03
#define ADM1026_REG_DAC 0x04
#define ADM1026_REG_PWM 0x05
#define ADM1026_REG_GPIO_CFG_0_3 0x08
#define ADM1026_REG_GPIO_CFG_4_7 0x09
#define ADM1026_REG_GPIO_CFG_8_11 0x0a
#define ADM1026_REG_GPIO_CFG_12_15 0x0b
/* CFG_16 in REG_CFG3 */
#define ADM1026_REG_GPIO_STATUS_0_7 0x24
#define ADM1026_REG_GPIO_STATUS_8_15 0x25
/* STATUS_16 in REG_STATUS4 */
#define ADM1026_REG_GPIO_MASK_0_7 0x1c
#define ADM1026_REG_GPIO_MASK_8_15 0x1d
/* MASK_16 in REG_MASK4 */
#define ADM1026_REG_COMPANY 0x16
#define ADM1026_REG_VERSTEP 0x17
/* These are the recognized values for the above regs */
#define ADM1026_COMPANY_ANALOG_DEV 0x41
#define ADM1026_VERSTEP_GENERIC 0x40
#define ADM1026_VERSTEP_ADM1026 0x44
#define ADM1026_REG_MASK1 0x18
#define ADM1026_REG_MASK2 0x19
#define ADM1026_REG_MASK3 0x1a
#define ADM1026_REG_MASK4 0x1b
#define ADM1026_REG_STATUS1 0x20
#define ADM1026_REG_STATUS2 0x21
#define ADM1026_REG_STATUS3 0x22
#define ADM1026_REG_STATUS4 0x23
#define ADM1026_FAN_ACTIVATION_TEMP_HYST -6
#define ADM1026_FAN_CONTROL_TEMP_RANGE 20
#define ADM1026_PWM_MAX 255
/*
* 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. These are the
* voltages corresponding to 3/4 of full scale (192 or 0xc0)
* NOTE: The -12V input needs an additional factor to account
* for the Vref pullup resistor.
* NEG12_OFFSET = SCALE * Vref / V-192 - Vref
* = 13875 * 2.50 / 1.875 - 2500
* = 16000
*
* The values in this table are based on Table II, page 15 of the
* datasheet.
*/
static int adm1026_scaling[] = { /* .001 Volts */
2250, 2250, 2250, 2250, 2250, 2250,
1875, 1875, 1875, 1875, 3000, 3330,
3330, 4995, 2250, 12000, 13875
};
#define NEG12_OFFSET 16000
#define SCALE(val, from, to) (((val)*(to) + ((from)/2))/(from))
#define INS_TO_REG(n, val) (clamp_val(SCALE(val, adm1026_scaling[n], 192),\
0, 255))
#define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))
/*
* FAN speed is measured using 22.5kHz clock and counts for 2 pulses
* and we assume a 2 pulse-per-rev fan tach signal
* 22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
*/
#define FAN_TO_REG(val, div) ((val) <= 0 ? 0xff : \
clamp_val(1350000 / ((val) * (div)), \
1, 254))
#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 0xff ? 0 : \
1350000 / ((val) * (div)))
#define DIV_FROM_REG(val) (1 << (val))
#define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)
/* Temperature is reported in 1 degC increments */
#define TEMP_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \
/ 1000, -127, 127))
#define TEMP_FROM_REG(val) ((val) * 1000)
#define OFFSET_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \
/ 1000, -127, 127))
#define OFFSET_FROM_REG(val) ((val) * 1000)
#define PWM_TO_REG(val) (clamp_val(val, 0, 255))
#define PWM_FROM_REG(val) (val)
#define PWM_MIN_TO_REG(val) ((val) & 0xf0)
#define PWM_MIN_FROM_REG(val) (((val) & 0xf0) + ((val) >> 4))
/*
* Analog output is a voltage, and scaled to millivolts. The datasheet
* indicates that the DAC could be used to drive the fans, but in our
* example board (Arima HDAMA) it isn't connected to the fans at all.
*/
#define DAC_TO_REG(val) (clamp_val(((((val) * 255) + 500) / 2500), 0, 255))
#define DAC_FROM_REG(val) (((val) * 2500) / 255)
/*
* 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
* So, we keep the config data up to date in the cache
* when it is written and only sample it once every 5 *minutes*
*/
#define ADM1026_DATA_INTERVAL (1 * HZ)
#define ADM1026_CONFIG_INTERVAL (5 * 60 * HZ)
/*
* We allow for multiple chips in a single system.
*
* For each registered ADM1026, we need to keep state information
* at client->data. The adm1026_data structure is dynamically
* allocated, when a new client structure is allocated.
*/
struct pwm_data {
u8 pwm;
u8 enable;
u8 auto_pwm_min;
};
struct adm1026_data {
struct i2c_client *client;
const struct attribute_group *groups[3];
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[17]; /* Register value */
u8 in_max[17]; /* Register value */
u8 in_min[17]; /* Register value */
s8 temp[3]; /* Register value */
s8 temp_min[3]; /* Register value */
s8 temp_max[3]; /* Register value */
s8 temp_tmin[3]; /* Register value */
s8 temp_crit[3]; /* Register value */
s8 temp_offset[3]; /* Register value */
u8 fan[8]; /* Register value */
u8 fan_min[8]; /* Register value */
u8 fan_div[8]; /* Decoded value */
struct pwm_data pwm1; /* Pwm control values */
u8 vrm; /* VRM version */
u8 analog_out; /* Register value (DAC) */
long alarms; /* Register encoding, combined */
long alarm_mask; /* Register encoding, combined */
long gpio; /* Register encoding, combined */
long gpio_mask; /* Register encoding, combined */
u8 gpio_config[17]; /* Decoded value */
u8 config1; /* Register value */
u8 config2; /* Register value */
u8 config3; /* Register value */
};
static int adm1026_read_value(struct i2c_client *client, u8 reg)
{
int res;
if (reg < 0x80) {
/* "RAM" locations */
res = i2c_smbus_read_byte_data(client, reg) & 0xff;
} else {
/* EEPROM, do nothing */
res = 0;
}
return res;
}
static int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
{
int res;
if (reg < 0x80) {
/* "RAM" locations */
res = i2c_smbus_write_byte_data(client, reg, value);
} else {
/* EEPROM, do nothing */
res = 0;
}
return res;
}
static struct adm1026_data *adm1026_update_device(struct device *dev)
{
struct adm1026_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int i;
long value, alarms, gpio;
mutex_lock(&data->update_lock);
if (!data->valid
|| time_after(jiffies,
data->last_reading + ADM1026_DATA_INTERVAL)) {
/* Things that change quickly */
dev_dbg(&client->dev, "Reading sensor values\n");
for (i = 0; i <= 16; ++i) {
data->in[i] =
adm1026_read_value(client, ADM1026_REG_IN[i]);
}
for (i = 0; i <= 7; ++i) {
data->fan[i] =
adm1026_read_value(client, ADM1026_REG_FAN(i));
}
for (i = 0; i <= 2; ++i) {
/*
* NOTE: temp[] is s8 and we assume 2's complement
* "conversion" in the assignment
*/
data->temp[i] =
adm1026_read_value(client, ADM1026_REG_TEMP[i]);
}
data->pwm1.pwm = adm1026_read_value(client,
ADM1026_REG_PWM);
data->analog_out = adm1026_read_value(client,
ADM1026_REG_DAC);
/* GPIO16 is MSbit of alarms, move it to gpio */
alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
alarms &= 0x7f;
alarms <<= 8;
alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
alarms <<= 8;
alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
alarms <<= 8;
alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
data->alarms = alarms;
/* Read the GPIO values */
gpio |= adm1026_read_value(client,
ADM1026_REG_GPIO_STATUS_8_15);
gpio <<= 8;
gpio |= adm1026_read_value(client,
ADM1026_REG_GPIO_STATUS_0_7);
data->gpio = gpio;
data->last_reading = jiffies;
} /* last_reading */
if (!data->valid ||
time_after(jiffies, data->last_config + ADM1026_CONFIG_INTERVAL)) {
/* Things that don't change often */
dev_dbg(&client->dev, "Reading config values\n");
for (i = 0; i <= 16; ++i) {
data->in_min[i] = adm1026_read_value(client,
ADM1026_REG_IN_MIN[i]);
data->in_max[i] = adm1026_read_value(client,
ADM1026_REG_IN_MAX[i]);
}
value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
| (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7)
<< 8);
for (i = 0; i <= 7; ++i) {
data->fan_min[i] = adm1026_read_value(client,
ADM1026_REG_FAN_MIN(i));
data->fan_div[i] = DIV_FROM_REG(value & 0x03);
value >>= 2;
}
for (i = 0; i <= 2; ++i) {
/*
* NOTE: temp_xxx[] are s8 and we assume 2's
* complement "conversion" in the assignment
*/
data->temp_min[i] = adm1026_read_value(client,
ADM1026_REG_TEMP_MIN[i]);
data->temp_max[i] = adm1026_read_value(client,
ADM1026_REG_TEMP_MAX[i]);
data->temp_tmin[i] = adm1026_read_value(client,
ADM1026_REG_TEMP_TMIN[i]);
data->temp_crit[i] = adm1026_read_value(client,
ADM1026_REG_TEMP_THERM[i]);
data->temp_offset[i] = adm1026_read_value(client,
ADM1026_REG_TEMP_OFFSET[i]);
}
/* Read the STATUS/alarm masks */
alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
gpio = alarms & 0x80 ? 0x0100 : 0; /* GPIO16 */
alarms = (alarms & 0x7f) << 8;
alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
alarms <<= 8;
alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
alarms <<= 8;
alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
data->alarm_mask = alarms;
/* Read the GPIO values */
gpio |= adm1026_read_value(client,
ADM1026_REG_GPIO_MASK_8_15);
gpio <<= 8;
gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
data->gpio_mask = gpio;
/* Read various values from CONFIG1 */
data->config1 = adm1026_read_value(client,
ADM1026_REG_CONFIG1);
if (data->config1 & CFG1_PWM_AFC) {
data->pwm1.enable = 2;
data->pwm1.auto_pwm_min =
PWM_MIN_FROM_REG(data->pwm1.pwm);
}
/* Read the GPIO config */
data->config2 = adm1026_read_value(client,
ADM1026_REG_CONFIG2);
data->config3 = adm1026_read_value(client,
ADM1026_REG_CONFIG3);
data->gpio_config[16] = (data->config3 >> 6) & 0x03;
value = 0;
for (i = 0; i <= 15; ++i) {
if ((i & 0x03) == 0) {
value = adm1026_read_value(client,
ADM1026_REG_GPIO_CFG_0_3 + i/4);
}
data->gpio_config[i] = value & 0x03;
value >>= 2;
}
data->last_config = jiffies;
} /* last_config */
data->valid = 1;
mutex_unlock(&data->update_lock);
return data;
}
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in[nr]));
}
static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
}
static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_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);
adm1026_write_value(client, ADM1026_REG_IN_MIN[nr], data->in_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
}
static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_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);
adm1026_write_value(client, ADM1026_REG_IN_MAX[nr], data->in_max[nr]);
mutex_unlock(&data->update_lock);
return count;
}
#define in_reg(offset) \
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
NULL, offset); \
static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
show_in_min, set_in_min, offset); \
static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
show_in_max, set_in_max, offset);
in_reg(0);
in_reg(1);
in_reg(2);
in_reg(3);
in_reg(4);
in_reg(5);
in_reg(6);
in_reg(7);
in_reg(8);
in_reg(9);
in_reg(10);
in_reg(11);
in_reg(12);
in_reg(13);
in_reg(14);
in_reg(15);
static ssize_t show_in16(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in[16]) -
NEG12_OFFSET);
}
static ssize_t show_in16_min(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_min[16])
- NEG12_OFFSET);
}
static ssize_t set_in16_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct adm1026_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[16] = INS_TO_REG(16, val + NEG12_OFFSET);
adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_in16_max(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", INS_FROM_REG(16, data->in_max[16])
- NEG12_OFFSET);
}
static ssize_t set_in16_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct adm1026_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[16] = INS_TO_REG(16, val+NEG12_OFFSET);
adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
mutex_unlock(&data->update_lock);
return count;
}
static SENSOR_DEVICE_ATTR(in16_input, S_IRUGO, show_in16, NULL, 16);
static SENSOR_DEVICE_ATTR(in16_min, S_IRUGO | S_IWUSR, show_in16_min,
set_in16_min, 16);
static SENSOR_DEVICE_ATTR(in16_max, S_IRUGO | S_IWUSR, show_in16_max,
set_in16_max, 16);
/* Now add fan read/write functions */
static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
data->fan_div[nr]));
}
static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
data->fan_div[nr]));
}
static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_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->fan_min[nr] = FAN_TO_REG(val, data->fan_div[nr]);
adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
#define fan_offset(offset) \
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
offset - 1); \
static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
show_fan_min, set_fan_min, offset - 1);
fan_offset(1);
fan_offset(2);
fan_offset(3);
fan_offset(4);
fan_offset(5);
fan_offset(6);
fan_offset(7);
fan_offset(8);
/* Adjust fan_min to account for new fan divisor */
static void fixup_fan_min(struct device *dev, int fan, int old_div)
{
struct adm1026_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int new_min;
int new_div = data->fan_div[fan];
/* 0 and 0xff are special. Don't adjust them */
if (data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff)
return;
new_min = data->fan_min[fan] * old_div / new_div;
new_min = clamp_val(new_min, 1, 254);
data->fan_min[fan] = new_min;
adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
}
/* Now add fan_div read/write functions */
static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", data->fan_div[nr]);
}
static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
long val;
int orig_div, new_div;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
new_div = DIV_TO_REG(val);
mutex_lock(&data->update_lock);
orig_div = data->fan_div[nr];
data->fan_div[nr] = DIV_FROM_REG(new_div);
if (nr < 4) { /* 0 <= nr < 4 */
adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
(DIV_TO_REG(data->fan_div[0]) << 0) |
(DIV_TO_REG(data->fan_div[1]) << 2) |
(DIV_TO_REG(data->fan_div[2]) << 4) |
(DIV_TO_REG(data->fan_div[3]) << 6));
} else { /* 3 < nr < 8 */
adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
(DIV_TO_REG(data->fan_div[4]) << 0) |
(DIV_TO_REG(data->fan_div[5]) << 2) |
(DIV_TO_REG(data->fan_div[6]) << 4) |
(DIV_TO_REG(data->fan_div[7]) << 6));
}
if (data->fan_div[nr] != orig_div)
fixup_fan_min(dev, nr, orig_div);
mutex_unlock(&data->update_lock);
return count;
}
#define fan_offset_div(offset) \
static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
show_fan_div, set_fan_div, offset - 1);
fan_offset_div(1);
fan_offset_div(2);
fan_offset_div(3);
fan_offset_div(4);
fan_offset_div(5);
fan_offset_div(6);
fan_offset_div(7);
fan_offset_div(8);
/* Temps */
static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
}
static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
}
static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_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->temp_min[nr] = TEMP_TO_REG(val);
adm1026_write_value(client, ADM1026_REG_TEMP_MIN[nr],
data->temp_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
}
static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_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->temp_max[nr] = TEMP_TO_REG(val);
adm1026_write_value(client, ADM1026_REG_TEMP_MAX[nr],
data->temp_max[nr]);
mutex_unlock(&data->update_lock);
return count;
}
#define temp_reg(offset) \
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, show_temp, \
NULL, offset - 1); \
static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
show_temp_min, set_temp_min, offset - 1); \
static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
show_temp_max, set_temp_max, offset - 1);
temp_reg(1);
temp_reg(2);
temp_reg(3);
static ssize_t show_temp_offset(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
}
static ssize_t set_temp_offset(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_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->temp_offset[nr] = TEMP_TO_REG(val);
adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET[nr],
data->temp_offset[nr]);
mutex_unlock(&data->update_lock);
return count;
}
#define temp_offset_reg(offset) \
static SENSOR_DEVICE_ATTR(temp##offset##_offset, S_IRUGO | S_IWUSR, \
show_temp_offset, set_temp_offset, offset - 1);
temp_offset_reg(1);
temp_offset_reg(2);
temp_offset_reg(3);
static ssize_t show_temp_auto_point1_temp_hyst(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(
ADM1026_FAN_ACTIVATION_TEMP_HYST + data->temp_tmin[nr]));
}
static ssize_t show_temp_auto_point2_temp(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr] +
ADM1026_FAN_CONTROL_TEMP_RANGE));
}
static ssize_t show_temp_auto_point1_temp(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_tmin[nr]));
}
static ssize_t set_temp_auto_point1_temp(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_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->temp_tmin[nr] = TEMP_TO_REG(val);
adm1026_write_value(client, ADM1026_REG_TEMP_TMIN[nr],
data->temp_tmin[nr]);
mutex_unlock(&data->update_lock);
return count;
}
#define temp_auto_point(offset) \
static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp, \
S_IRUGO | S_IWUSR, show_temp_auto_point1_temp, \
set_temp_auto_point1_temp, offset - 1); \
static SENSOR_DEVICE_ATTR(temp##offset##_auto_point1_temp_hyst, S_IRUGO,\
show_temp_auto_point1_temp_hyst, NULL, offset - 1); \
static SENSOR_DEVICE_ATTR(temp##offset##_auto_point2_temp, S_IRUGO, \
show_temp_auto_point2_temp, NULL, offset - 1);
temp_auto_point(1);
temp_auto_point(2);
temp_auto_point(3);
static ssize_t show_temp_crit_enable(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", (data->config1 & CFG1_THERM_HOT) >> 4);
}
static ssize_t set_temp_crit_enable(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct adm1026_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;
if (val > 1)
return -EINVAL;
mutex_lock(&data->update_lock);
data->config1 = (data->config1 & ~CFG1_THERM_HOT) | (val << 4);
adm1026_write_value(client, ADM1026_REG_CONFIG1, data->config1);
mutex_unlock(&data->update_lock);
return count;
}
#define temp_crit_enable(offset) \
static DEVICE_ATTR(temp##offset##_crit_enable, S_IRUGO | S_IWUSR, \
show_temp_crit_enable, set_temp_crit_enable);
temp_crit_enable(1);
temp_crit_enable(2);
temp_crit_enable(3);
static ssize_t show_temp_crit(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct adm1026_data *data = adm1026_update_device(dev);
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit[nr]));
}
static ssize_t set_temp_crit(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)