+++ /dev/null
-/*
- * A hwmon driver for the Analog Devices ADT7473
- * Copyright (C) 2007 IBM
- *
- * Author: Darrick J. Wong <djwong@us.ibm.com>
- *
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <linux/module.h>
-#include <linux/jiffies.h>
-#include <linux/i2c.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/err.h>
-#include <linux/mutex.h>
-#include <linux/delay.h>
-#include <linux/log2.h>
-
-/* Addresses to scan */
-static const unsigned short normal_i2c[] = { 0x2C, 0x2D, 0x2E, I2C_CLIENT_END };
-
-/* ADT7473 registers */
-#define ADT7473_REG_BASE_ADDR 0x20
-
-#define ADT7473_REG_VOLT_BASE_ADDR 0x21
-#define ADT7473_REG_VOLT_MIN_BASE_ADDR 0x46
-
-#define ADT7473_REG_TEMP_BASE_ADDR 0x25
-#define ADT7473_REG_TEMP_LIMITS_BASE_ADDR 0x4E
-#define ADT7473_REG_TEMP_TMIN_BASE_ADDR 0x67
-#define ADT7473_REG_TEMP_TMAX_BASE_ADDR 0x6A
-
-#define ADT7473_REG_FAN_BASE_ADDR 0x28
-#define ADT7473_REG_FAN_MIN_BASE_ADDR 0x54
-
-#define ADT7473_REG_PWM_BASE_ADDR 0x30
-#define ADT7473_REG_PWM_MIN_BASE_ADDR 0x64
-#define ADT7473_REG_PWM_MAX_BASE_ADDR 0x38
-#define ADT7473_REG_PWM_BHVR_BASE_ADDR 0x5C
-#define ADT7473_PWM_BHVR_MASK 0xE0
-#define ADT7473_PWM_BHVR_SHIFT 5
-
-#define ADT7473_REG_CFG1 0x40
-#define ADT7473_CFG1_START 0x01
-#define ADT7473_CFG1_READY 0x04
-#define ADT7473_REG_CFG2 0x73
-#define ADT7473_REG_CFG3 0x78
-#define ADT7473_REG_CFG4 0x7D
-#define ADT7473_CFG4_MAX_DUTY_AT_OVT 0x08
-#define ADT7473_REG_CFG5 0x7C
-#define ADT7473_CFG5_TEMP_TWOS 0x01
-#define ADT7473_CFG5_TEMP_OFFSET 0x02
-
-#define ADT7473_REG_DEVICE 0x3D
-#define ADT7473_VENDOR 0x41
-#define ADT7473_REG_VENDOR 0x3E
-#define ADT7473_DEVICE 0x73
-#define ADT7473_REG_REVISION 0x3F
-#define ADT7473_REV_68 0x68
-#define ADT7473_REV_69 0x69
-
-#define ADT7473_REG_ALARM1 0x41
-#define ADT7473_VCCP_ALARM 0x02
-#define ADT7473_VCC_ALARM 0x04
-#define ADT7473_R1T_ALARM 0x10
-#define ADT7473_LT_ALARM 0x20
-#define ADT7473_R2T_ALARM 0x40
-#define ADT7473_OOL 0x80
-#define ADT7473_REG_ALARM2 0x42
-#define ADT7473_OVT_ALARM 0x02
-#define ADT7473_FAN1_ALARM 0x04
-#define ADT7473_FAN2_ALARM 0x08
-#define ADT7473_FAN3_ALARM 0x10
-#define ADT7473_FAN4_ALARM 0x20
-#define ADT7473_R1T_SHORT 0x40
-#define ADT7473_R2T_SHORT 0x80
-
-#define ALARM2(x) ((x) << 8)
-
-#define ADT7473_VOLT_COUNT 2
-#define ADT7473_REG_VOLT(x) (ADT7473_REG_VOLT_BASE_ADDR + (x))
-#define ADT7473_REG_VOLT_MIN(x) (ADT7473_REG_VOLT_MIN_BASE_ADDR + ((x) * 2))
-#define ADT7473_REG_VOLT_MAX(x) (ADT7473_REG_VOLT_MIN_BASE_ADDR + \
- ((x) * 2) + 1)
-
-#define ADT7473_TEMP_COUNT 3
-#define ADT7473_REG_TEMP(x) (ADT7473_REG_TEMP_BASE_ADDR + (x))
-#define ADT7473_REG_TEMP_MIN(x) (ADT7473_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2))
-#define ADT7473_REG_TEMP_MAX(x) (ADT7473_REG_TEMP_LIMITS_BASE_ADDR + \
- ((x) * 2) + 1)
-#define ADT7473_REG_TEMP_TMIN(x) (ADT7473_REG_TEMP_TMIN_BASE_ADDR + (x))
-#define ADT7473_REG_TEMP_TMAX(x) (ADT7473_REG_TEMP_TMAX_BASE_ADDR + (x))
-
-#define ADT7473_FAN_COUNT 4
-#define ADT7473_REG_FAN(x) (ADT7473_REG_FAN_BASE_ADDR + ((x) * 2))
-#define ADT7473_REG_FAN_MIN(x) (ADT7473_REG_FAN_MIN_BASE_ADDR + ((x) * 2))
-
-#define ADT7473_PWM_COUNT 3
-#define ADT7473_REG_PWM(x) (ADT7473_REG_PWM_BASE_ADDR + (x))
-#define ADT7473_REG_PWM_MAX(x) (ADT7473_REG_PWM_MAX_BASE_ADDR + (x))
-#define ADT7473_REG_PWM_MIN(x) (ADT7473_REG_PWM_MIN_BASE_ADDR + (x))
-#define ADT7473_REG_PWM_BHVR(x) (ADT7473_REG_PWM_BHVR_BASE_ADDR + (x))
-
-/* How often do we reread sensors values? (In jiffies) */
-#define SENSOR_REFRESH_INTERVAL (2 * HZ)
-
-/* How often do we reread sensor limit values? (In jiffies) */
-#define LIMIT_REFRESH_INTERVAL (60 * HZ)
-
-/* datasheet says to divide this number by the fan reading to get fan rpm */
-#define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
-#define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
-#define FAN_PERIOD_INVALID 65535
-#define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
-
-struct adt7473_data {
- struct device *hwmon_dev;
- struct attribute_group attrs;
- struct mutex lock;
- char sensors_valid;
- char limits_valid;
- unsigned long sensors_last_updated; /* In jiffies */
- unsigned long limits_last_updated; /* In jiffies */
-
- u8 volt[ADT7473_VOLT_COUNT];
- s8 volt_min[ADT7473_VOLT_COUNT];
- s8 volt_max[ADT7473_VOLT_COUNT];
-
- s8 temp[ADT7473_TEMP_COUNT];
- s8 temp_min[ADT7473_TEMP_COUNT];
- s8 temp_max[ADT7473_TEMP_COUNT];
- s8 temp_tmin[ADT7473_TEMP_COUNT];
- /* This is called the !THERM limit in the datasheet */
- s8 temp_tmax[ADT7473_TEMP_COUNT];
-
- u16 fan[ADT7473_FAN_COUNT];
- u16 fan_min[ADT7473_FAN_COUNT];
-
- u8 pwm[ADT7473_PWM_COUNT];
- u8 pwm_max[ADT7473_PWM_COUNT];
- u8 pwm_min[ADT7473_PWM_COUNT];
- u8 pwm_behavior[ADT7473_PWM_COUNT];
-
- u8 temp_twos_complement;
- u8 temp_offset;
-
- u16 alarm;
- u8 max_duty_at_overheat;
-};
-
-static int adt7473_probe(struct i2c_client *client,
- const struct i2c_device_id *id);
-static int adt7473_detect(struct i2c_client *client,
- struct i2c_board_info *info);
-static int adt7473_remove(struct i2c_client *client);
-
-static const struct i2c_device_id adt7473_id[] = {
- { "adt7473", 0 },
- { }
-};
-
-static struct i2c_driver adt7473_driver = {
- .class = I2C_CLASS_HWMON,
- .driver = {
- .name = "adt7473",
- },
- .probe = adt7473_probe,
- .remove = adt7473_remove,
- .id_table = adt7473_id,
- .detect = adt7473_detect,
- .address_list = normal_i2c,
-};
-
-/*
- * 16-bit registers on the ADT7473 are low-byte first. The data sheet says
- * that the low byte must be read before the high byte.
- */
-static inline int adt7473_read_word_data(struct i2c_client *client, u8 reg)
-{
- u16 foo;
- foo = i2c_smbus_read_byte_data(client, reg);
- foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8);
- return foo;
-}
-
-static inline int adt7473_write_word_data(struct i2c_client *client, u8 reg,
- u16 value)
-{
- return i2c_smbus_write_byte_data(client, reg, value & 0xFF)
- && i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
-}
-
-static void adt7473_init_client(struct i2c_client *client)
-{
- int reg = i2c_smbus_read_byte_data(client, ADT7473_REG_CFG1);
-
- if (!(reg & ADT7473_CFG1_READY)) {
- dev_err(&client->dev, "Chip not ready.\n");
- } else {
- /* start monitoring */
- i2c_smbus_write_byte_data(client, ADT7473_REG_CFG1,
- reg | ADT7473_CFG1_START);
- }
-}
-
-static struct adt7473_data *adt7473_update_device(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- unsigned long local_jiffies = jiffies;
- u8 cfg;
- int i;
-
- mutex_lock(&data->lock);
- if (time_before(local_jiffies, data->sensors_last_updated +
- SENSOR_REFRESH_INTERVAL)
- && data->sensors_valid)
- goto no_sensor_update;
-
- for (i = 0; i < ADT7473_VOLT_COUNT; i++)
- data->volt[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_VOLT(i));
-
- /* Determine temperature encoding */
- cfg = i2c_smbus_read_byte_data(client, ADT7473_REG_CFG5);
- data->temp_twos_complement = (cfg & ADT7473_CFG5_TEMP_TWOS);
-
- /*
- * What does this do? it implies a variable temperature sensor
- * offset, but the datasheet doesn't say anything about this bit
- * and other parts of the datasheet imply that "offset64" mode
- * means that you shift temp values by -64 if the above bit was set.
- */
- data->temp_offset = (cfg & ADT7473_CFG5_TEMP_OFFSET);
-
- for (i = 0; i < ADT7473_TEMP_COUNT; i++)
- data->temp[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_TEMP(i));
-
- for (i = 0; i < ADT7473_FAN_COUNT; i++)
- data->fan[i] = adt7473_read_word_data(client,
- ADT7473_REG_FAN(i));
-
- for (i = 0; i < ADT7473_PWM_COUNT; i++)
- data->pwm[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_PWM(i));
-
- data->alarm = i2c_smbus_read_byte_data(client, ADT7473_REG_ALARM1);
- if (data->alarm & ADT7473_OOL)
- data->alarm |= ALARM2(i2c_smbus_read_byte_data(client,
- ADT7473_REG_ALARM2));
-
- data->sensors_last_updated = local_jiffies;
- data->sensors_valid = 1;
-
-no_sensor_update:
- if (time_before(local_jiffies, data->limits_last_updated +
- LIMIT_REFRESH_INTERVAL)
- && data->limits_valid)
- goto out;
-
- for (i = 0; i < ADT7473_VOLT_COUNT; i++) {
- data->volt_min[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_VOLT_MIN(i));
- data->volt_max[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_VOLT_MAX(i));
- }
-
- for (i = 0; i < ADT7473_TEMP_COUNT; i++) {
- data->temp_min[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_TEMP_MIN(i));
- data->temp_max[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_TEMP_MAX(i));
- data->temp_tmin[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_TEMP_TMIN(i));
- data->temp_tmax[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_TEMP_TMAX(i));
- }
-
- for (i = 0; i < ADT7473_FAN_COUNT; i++)
- data->fan_min[i] = adt7473_read_word_data(client,
- ADT7473_REG_FAN_MIN(i));
-
- for (i = 0; i < ADT7473_PWM_COUNT; i++) {
- data->pwm_max[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_PWM_MAX(i));
- data->pwm_min[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_PWM_MIN(i));
- data->pwm_behavior[i] = i2c_smbus_read_byte_data(client,
- ADT7473_REG_PWM_BHVR(i));
- }
-
- i = i2c_smbus_read_byte_data(client, ADT7473_REG_CFG4);
- data->max_duty_at_overheat = !!(i & ADT7473_CFG4_MAX_DUTY_AT_OVT);
-
- data->limits_last_updated = local_jiffies;
- data->limits_valid = 1;
-
-out:
- mutex_unlock(&data->lock);
- return data;
-}
-
-/*
- * Conversions
- */
-
-/* IN are scaled acording to built-in resistors */
-static const int adt7473_scaling[] = { /* .001 Volts */
- 2250, 3300
-};
-#define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
-
-static int decode_volt(int volt_index, u8 raw)
-{
- return SCALE(raw, 192, adt7473_scaling[volt_index]);
-}
-
-static u8 encode_volt(int volt_index, int cooked)
-{
- int raw = SCALE(cooked, adt7473_scaling[volt_index], 192);
- return SENSORS_LIMIT(raw, 0, 255);
-}
-
-static ssize_t show_volt_min(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n",
- decode_volt(attr->index, data->volt_min[attr->index]));
-}
-
-static ssize_t set_volt_min(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long volt;
-
- if (strict_strtol(buf, 10, &volt))
- return -EINVAL;
-
- volt = encode_volt(attr->index, volt);
-
- mutex_lock(&data->lock);
- data->volt_min[attr->index] = volt;
- i2c_smbus_write_byte_data(client, ADT7473_REG_VOLT_MIN(attr->index),
- volt);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_volt_max(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n",
- decode_volt(attr->index, data->volt_max[attr->index]));
-}
-
-static ssize_t set_volt_max(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long volt;
-
- if (strict_strtol(buf, 10, &volt))
- return -EINVAL;
-
- volt = encode_volt(attr->index, volt);
-
- mutex_lock(&data->lock);
- data->volt_max[attr->index] = volt;
- i2c_smbus_write_byte_data(client, ADT7473_REG_VOLT_MAX(attr->index),
- volt);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_volt(struct device *dev, struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
-
- return sprintf(buf, "%d\n",
- decode_volt(attr->index, data->volt[attr->index]));
-}
-
-/*
- * This chip can report temperature data either as a two's complement
- * number in the range -128 to 127, or as an unsigned number that must
- * be offset by 64.
- */
-static int decode_temp(u8 twos_complement, u8 raw)
-{
- return twos_complement ? (s8)raw : raw - 64;
-}
-
-static u8 encode_temp(u8 twos_complement, int cooked)
-{
- u8 ret = twos_complement ? cooked & 0xFF : cooked + 64;
- return SENSORS_LIMIT(ret, 0, 255);
-}
-
-static ssize_t show_temp_min(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n", 1000 * decode_temp(
- data->temp_twos_complement,
- data->temp_min[attr->index]));
-}
-
-static ssize_t set_temp_min(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- temp = DIV_ROUND_CLOSEST(temp, 1000);
- temp = encode_temp(data->temp_twos_complement, temp);
-
- mutex_lock(&data->lock);
- data->temp_min[attr->index] = temp;
- i2c_smbus_write_byte_data(client, ADT7473_REG_TEMP_MIN(attr->index),
- temp);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_temp_max(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n", 1000 * decode_temp(
- data->temp_twos_complement,
- data->temp_max[attr->index]));
-}
-
-static ssize_t set_temp_max(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- temp = DIV_ROUND_CLOSEST(temp, 1000);
- temp = encode_temp(data->temp_twos_complement, temp);
-
- mutex_lock(&data->lock);
- data->temp_max[attr->index] = temp;
- i2c_smbus_write_byte_data(client, ADT7473_REG_TEMP_MAX(attr->index),
- temp);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n", 1000 * decode_temp(
- data->temp_twos_complement,
- data->temp[attr->index]));
-}
-
-static ssize_t show_fan_min(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
-
- if (FAN_DATA_VALID(data->fan_min[attr->index]))
- return sprintf(buf, "%d\n",
- FAN_PERIOD_TO_RPM(data->fan_min[attr->index]));
- else
- return sprintf(buf, "0\n");
-}
-
-static ssize_t set_fan_min(struct device *dev,
- struct device_attribute *devattr,
- const char *buf, size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp) || !temp)
- return -EINVAL;
-
- temp = FAN_RPM_TO_PERIOD(temp);
- temp = SENSORS_LIMIT(temp, 1, 65534);
-
- mutex_lock(&data->lock);
- data->fan_min[attr->index] = temp;
- adt7473_write_word_data(client, ADT7473_REG_FAN_MIN(attr->index), temp);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
-
- if (FAN_DATA_VALID(data->fan[attr->index]))
- return sprintf(buf, "%d\n",
- FAN_PERIOD_TO_RPM(data->fan[attr->index]));
- else
- return sprintf(buf, "0\n");
-}
-
-static ssize_t show_max_duty_at_crit(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n", data->max_duty_at_overheat);
-}
-
-static ssize_t set_max_duty_at_crit(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- u8 reg;
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- mutex_lock(&data->lock);
- data->max_duty_at_overheat = !!temp;
- reg = i2c_smbus_read_byte_data(client, ADT7473_REG_CFG4);
- if (temp)
- reg |= ADT7473_CFG4_MAX_DUTY_AT_OVT;
- else
- reg &= ~ADT7473_CFG4_MAX_DUTY_AT_OVT;
- i2c_smbus_write_byte_data(client, ADT7473_REG_CFG4, reg);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n", data->pwm[attr->index]);
-}
-
-static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
- const char *buf, size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- temp = SENSORS_LIMIT(temp, 0, 255);
-
- mutex_lock(&data->lock);
- data->pwm[attr->index] = temp;
- i2c_smbus_write_byte_data(client, ADT7473_REG_PWM(attr->index), temp);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_pwm_max(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n", data->pwm_max[attr->index]);
-}
-
-static ssize_t set_pwm_max(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- temp = SENSORS_LIMIT(temp, 0, 255);
-
- mutex_lock(&data->lock);
- data->pwm_max[attr->index] = temp;
- i2c_smbus_write_byte_data(client, ADT7473_REG_PWM_MAX(attr->index),
- temp);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_pwm_min(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n", data->pwm_min[attr->index]);
-}
-
-static ssize_t set_pwm_min(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- temp = SENSORS_LIMIT(temp, 0, 255);
-
- mutex_lock(&data->lock);
- data->pwm_min[attr->index] = temp;
- i2c_smbus_write_byte_data(client, ADT7473_REG_PWM_MIN(attr->index),
- temp);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_temp_tmax(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n", 1000 * decode_temp(
- data->temp_twos_complement,
- data->temp_tmax[attr->index]));
-}
-
-static ssize_t set_temp_tmax(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- temp = DIV_ROUND_CLOSEST(temp, 1000);
- temp = encode_temp(data->temp_twos_complement, temp);
-
- mutex_lock(&data->lock);
- data->temp_tmax[attr->index] = temp;
- i2c_smbus_write_byte_data(client, ADT7473_REG_TEMP_TMAX(attr->index),
- temp);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_temp_tmin(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- return sprintf(buf, "%d\n", 1000 * decode_temp(
- data->temp_twos_complement,
- data->temp_tmin[attr->index]));
-}
-
-static ssize_t set_temp_tmin(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- temp = DIV_ROUND_CLOSEST(temp, 1000);
- temp = encode_temp(data->temp_twos_complement, temp);
-
- mutex_lock(&data->lock);
- data->temp_tmin[attr->index] = temp;
- i2c_smbus_write_byte_data(client, ADT7473_REG_TEMP_TMIN(attr->index),
- temp);
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_pwm_enable(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
-
- switch (data->pwm_behavior[attr->index] >> ADT7473_PWM_BHVR_SHIFT) {
- case 3:
- return sprintf(buf, "0\n");
- case 7:
- return sprintf(buf, "1\n");
- default:
- return sprintf(buf, "2\n");
- }
-}
-
-static ssize_t set_pwm_enable(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- u8 reg;
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- switch (temp) {
- case 0:
- temp = 3;
- break;
- case 1:
- temp = 7;
- break;
- case 2:
- /* Enter automatic mode with fans off */
- temp = 4;
- break;
- default:
- return -EINVAL;
- }
-
- mutex_lock(&data->lock);
- reg = i2c_smbus_read_byte_data(client,
- ADT7473_REG_PWM_BHVR(attr->index));
- reg = (temp << ADT7473_PWM_BHVR_SHIFT) |
- (reg & ~ADT7473_PWM_BHVR_MASK);
- i2c_smbus_write_byte_data(client, ADT7473_REG_PWM_BHVR(attr->index),
- reg);
- data->pwm_behavior[attr->index] = reg;
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_pwm_auto_temp(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
- int bhvr = data->pwm_behavior[attr->index] >> ADT7473_PWM_BHVR_SHIFT;
-
- switch (bhvr) {
- case 3:
- case 4:
- case 7:
- return sprintf(buf, "0\n");
- case 0:
- case 1:
- case 5:
- case 6:
- return sprintf(buf, "%d\n", bhvr + 1);
- case 2:
- return sprintf(buf, "4\n");
- }
- /* shouldn't ever get here */
- BUG();
-}
-
-static ssize_t set_pwm_auto_temp(struct device *dev,
- struct device_attribute *devattr,
- const char *buf,
- size_t count)
-{
- u8 reg;
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct i2c_client *client = to_i2c_client(dev);
- struct adt7473_data *data = i2c_get_clientdata(client);
- long temp;
-
- if (strict_strtol(buf, 10, &temp))
- return -EINVAL;
-
- switch (temp) {
- case 1:
- case 2:
- case 6:
- case 7:
- temp--;
- break;
- case 0:
- temp = 4;
- break;
- default:
- return -EINVAL;
- }
-
- mutex_lock(&data->lock);
- reg = i2c_smbus_read_byte_data(client,
- ADT7473_REG_PWM_BHVR(attr->index));
- reg = (temp << ADT7473_PWM_BHVR_SHIFT) |
- (reg & ~ADT7473_PWM_BHVR_MASK);
- i2c_smbus_write_byte_data(client, ADT7473_REG_PWM_BHVR(attr->index),
- reg);
- data->pwm_behavior[attr->index] = reg;
- mutex_unlock(&data->lock);
-
- return count;
-}
-
-static ssize_t show_alarm(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct adt7473_data *data = adt7473_update_device(dev);
-
- if (data->alarm & attr->index)
- return sprintf(buf, "1\n");
- else
- return sprintf(buf, "0\n");
-}
-
-
-static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO, show_volt_max,
- set_volt_max, 0);
-static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO, show_volt_max,
- set_volt_max, 1);
-
-static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO, show_volt_min,
- set_volt_min, 0);
-static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO, show_volt_min,
- set_volt_min, 1);
-
-static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_volt, NULL, 0);
-static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_volt, NULL, 1);
-
-static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL,
- ADT7473_VCCP_ALARM);
-static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL,
- ADT7473_VCC_ALARM);
-
-static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
- set_temp_max, 0);
-static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
- set_temp_max, 1);
-static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_temp_max,
- set_temp_max, 2);
-
-static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp_min,
- set_temp_min, 0);
-static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp_min,
- set_temp_min, 1);
-static SENSOR_DEVICE_ATTR(temp3_min, S_IWUSR | S_IRUGO, show_temp_min,
- set_temp_min, 2);
-
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0);
-static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1);
-static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2);
-
-static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
- ADT7473_R1T_ALARM | ALARM2(ADT7473_R1T_SHORT));
-static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
- ADT7473_LT_ALARM);
-static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
- ADT7473_R2T_ALARM | ALARM2(ADT7473_R2T_SHORT));
-
-static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
- set_fan_min, 0);
-static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
- set_fan_min, 1);
-static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
- set_fan_min, 2);
-static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
- set_fan_min, 3);
-
-static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
-static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
-static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2);
-static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3);
-
-static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL,
- ALARM2(ADT7473_FAN1_ALARM));
-static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL,
- ALARM2(ADT7473_FAN2_ALARM));
-static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL,
- ALARM2(ADT7473_FAN3_ALARM));
-static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL,
- ALARM2(ADT7473_FAN4_ALARM));
-
-static SENSOR_DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
- show_max_duty_at_crit, set_max_duty_at_crit, 0);
-
-static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
-static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
-static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
-
-static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
- show_pwm_min, set_pwm_min, 0);
-static SENSOR_DEVICE_ATTR(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO,
- show_pwm_min, set_pwm_min, 1);
-static SENSOR_DEVICE_ATTR(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO,
- show_pwm_min, set_pwm_min, 2);
-
-static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
- show_pwm_max, set_pwm_max, 0);
-static SENSOR_DEVICE_ATTR(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO,
- show_pwm_max, set_pwm_max, 1);
-static SENSOR_DEVICE_ATTR(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO,
- show_pwm_max, set_pwm_max, 2);
-
-static SENSOR_DEVICE_ATTR(temp1_auto_point1_temp, S_IWUSR | S_IRUGO,
- show_temp_tmin, set_temp_tmin, 0);
-static SENSOR_DEVICE_ATTR(temp2_auto_point1_temp, S_IWUSR | S_IRUGO,
- show_temp_tmin, set_temp_tmin, 1);
-static SENSOR_DEVICE_ATTR(temp3_auto_point1_temp, S_IWUSR | S_IRUGO,
- show_temp_tmin, set_temp_tmin, 2);
-
-static SENSOR_DEVICE_ATTR(temp1_auto_point2_temp, S_IWUSR | S_IRUGO,
- show_temp_tmax, set_temp_tmax, 0);
-static SENSOR_DEVICE_ATTR(temp2_auto_point2_temp, S_IWUSR | S_IRUGO,
- show_temp_tmax, set_temp_tmax, 1);
-static SENSOR_DEVICE_ATTR(temp3_auto_point2_temp, S_IWUSR | S_IRUGO,
- show_temp_tmax, set_temp_tmax, 2);
-
-static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
- set_pwm_enable, 0);
-static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
- set_pwm_enable, 1);
-static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
- set_pwm_enable, 2);
-
-static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IWUSR | S_IRUGO,
- show_pwm_auto_temp, set_pwm_auto_temp, 0);
-static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IWUSR | S_IRUGO,
- show_pwm_auto_temp, set_pwm_auto_temp, 1);
-static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IWUSR | S_IRUGO,
- show_pwm_auto_temp, set_pwm_auto_temp, 2);
-
-static struct attribute *adt7473_attr[] =
-{
- &sensor_dev_attr_in1_max.dev_attr.attr,
- &sensor_dev_attr_in2_max.dev_attr.attr,
- &sensor_dev_attr_in1_min.dev_attr.attr,
- &sensor_dev_attr_in2_min.dev_attr.attr,
- &sensor_dev_attr_in1_input.dev_attr.attr,
- &sensor_dev_attr_in2_input.dev_attr.attr,
- &sensor_dev_attr_in1_alarm.dev_attr.attr,
- &sensor_dev_attr_in2_alarm.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_min.dev_attr.attr,
- &sensor_dev_attr_temp2_min.dev_attr.attr,
- &sensor_dev_attr_temp3_min.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_alarm.dev_attr.attr,
- &sensor_dev_attr_temp2_alarm.dev_attr.attr,
- &sensor_dev_attr_temp3_alarm.dev_attr.attr,
- &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
- &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
- &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
- &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
- &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
- &sensor_dev_attr_temp3_auto_point2_temp.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_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_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_pwm_use_point2_pwm_at_crit.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_auto_point1_pwm.dev_attr.attr,
- &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
- &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
- &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
- &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
- &sensor_dev_attr_pwm3_auto_point2_pwm.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_auto_channels_temp.dev_attr.attr,
- &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
- &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
-
- NULL
-};
-
-/* Return 0 if detection is successful, -ENODEV otherwise */
-static int adt7473_detect(struct i2c_client *client,
- struct i2c_board_info *info)
-{
- struct i2c_adapter *adapter = client->adapter;
- int vendor, device, revision;
-
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- return -ENODEV;
-
- vendor = i2c_smbus_read_byte_data(client, ADT7473_REG_VENDOR);
- if (vendor != ADT7473_VENDOR)
- return -ENODEV;
-
- device = i2c_smbus_read_byte_data(client, ADT7473_REG_DEVICE);
- if (device != ADT7473_DEVICE)
- return -ENODEV;
-
- revision = i2c_smbus_read_byte_data(client, ADT7473_REG_REVISION);
- if (revision != ADT7473_REV_68 && revision != ADT7473_REV_69)
- return -ENODEV;
-
- strlcpy(info->type, "adt7473", I2C_NAME_SIZE);
-
- return 0;
-}
-
-static int adt7473_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct adt7473_data *data;
- int err;
-
- data = kzalloc(sizeof(struct adt7473_data), GFP_KERNEL);
- if (!data) {
- err = -ENOMEM;
- goto exit;
- }
-
- i2c_set_clientdata(client, data);
- mutex_init(&data->lock);
-
- dev_info(&client->dev, "%s chip found\n", client->name);
-
- /* Initialize the ADT7473 chip */
- adt7473_init_client(client);
-
- /* Register sysfs hooks */
- data->attrs.attrs = adt7473_attr;
- err = sysfs_create_group(&client->dev.kobj, &data->attrs);
- if (err)
- goto exit_free;
-
- data->hwmon_dev = hwmon_device_register(&client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- err = PTR_ERR(data->hwmon_dev);
- goto exit_remove;
- }
-
- return 0;
-
-exit_remove:
- sysfs_remove_group(&client->dev.kobj, &data->attrs);
-exit_free:
- kfree(data);
-exit:
- return err;
-}
-
-static int adt7473_remove(struct i2c_client *client)
-{
- struct adt7473_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &data->attrs);
- kfree(data);
- return 0;
-}
-
-static int __init adt7473_init(void)
-{
- pr_notice("The adt7473 driver is deprecated, please use the adt7475 "
- "driver instead\n");
- return i2c_add_driver(&adt7473_driver);
-}
-
-static void __exit adt7473_exit(void)
-{
- i2c_del_driver(&adt7473_driver);
-}
-
-MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
-MODULE_DESCRIPTION("ADT7473 driver");
-MODULE_LICENSE("GPL");
-
-module_init(adt7473_init);
-module_exit(adt7473_exit);
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff