diff options
Diffstat (limited to 'drivers/hwmon/adt7473.c')
| -rw-r--r-- | drivers/hwmon/adt7473.c | 1157 |
1 files changed, 0 insertions, 1157 deletions
diff --git a/drivers/hwmon/adt7473.c b/drivers/hwmon/adt7473.c deleted file mode 100644 index 9587869bdba..00000000000 --- a/drivers/hwmon/adt7473.c +++ /dev/null @@ -1,1157 +0,0 @@ -/* - * 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 }; - -/* Insmod parameters */ -I2C_CLIENT_INSMOD_1(adt7473); - -/* ADT7473 registers */ -#define ADT7473_REG_BASE_ADDR 0x20 - -#define ADT7473_REG_VOLT_BASE_ADDR 0x21 -#define ADT7473_REG_VOLT_MAX_ADDR 0x22 -#define ADT7473_REG_VOLT_MIN_BASE_ADDR 0x46 -#define ADT7473_REG_VOLT_MIN_MAX_ADDR 0x49 - -#define ADT7473_REG_TEMP_BASE_ADDR 0x25 -#define ADT7473_REG_TEMP_MAX_ADDR 0x27 -#define ADT7473_REG_TEMP_LIMITS_BASE_ADDR 0x4E -#define ADT7473_REG_TEMP_LIMITS_MAX_ADDR 0x53 -#define ADT7473_REG_TEMP_TMIN_BASE_ADDR 0x67 -#define ADT7473_REG_TEMP_TMIN_MAX_ADDR 0x69 -#define ADT7473_REG_TEMP_TMAX_BASE_ADDR 0x6A -#define ADT7473_REG_TEMP_TMAX_MAX_ADDR 0x6C - -#define ADT7473_REG_FAN_BASE_ADDR 0x28 -#define ADT7473_REG_FAN_MAX_ADDR 0x2F -#define ADT7473_REG_FAN_MIN_BASE_ADDR 0x54 -#define ADT7473_REG_FAN_MIN_MAX_ADDR 0x5B - -#define ADT7473_REG_PWM_BASE_ADDR 0x30 -#define ADT7473_REG_PWM_MAX_ADDR 0x32 -#define ADT7473_REG_PWM_MIN_BASE_ADDR 0x64 -#define ADT7473_REG_PWM_MIN_MAX_ADDR 0x66 -#define ADT7473_REG_PWM_MAX_BASE_ADDR 0x38 -#define ADT7473_REG_PWM_MAX_MAX_ADDR 0x3A -#define ADT7473_REG_PWM_BHVR_BASE_ADDR 0x5C -#define ADT7473_REG_PWM_BHVR_MAX_ADDR 0x5E -#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 ADT7473_REG_MAX_ADDR 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 i2c_client client; - 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_attach_adapter(struct i2c_adapter *adapter); -static int adt7473_detect(struct i2c_adapter *adapter, int address, int kind); -static int adt7473_detach_client(struct i2c_client *client); - -static struct i2c_driver adt7473_driver = { - .driver = { - .name = "adt7473", - }, - .attach_adapter = adt7473_attach_adapter, - .detach_client = adt7473_detach_client, -}; - -/* - * 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)); - } - - data->limits_last_updated = local_jiffies; - data->limits_valid = 1; - -out: - mutex_unlock(&data->lock); - return data; -} - -/* - * On this chip, voltages are given as a count of steps between a minimum - * and maximum voltage, not a direct voltage. - */ -static const int volt_convert_table[][2] = { - {2997, 3}, - {4395, 4}, -}; - -static int decode_volt(int volt_index, u8 raw) -{ - int cmax = volt_convert_table[volt_index][0]; - int cmin = volt_convert_table[volt_index][1]; - return ((raw * (cmax - cmin)) / 255) + cmin; -} - -static u8 encode_volt(int volt_index, int cooked) -{ - int cmax = volt_convert_table[volt_index][0]; - int cmin = volt_convert_table[volt_index][1]; - u8 x; - - if (cooked > cmax) - cooked = cmax; - else if (cooked < cmin) - cooked = cmin; - - x = ((cooked - cmin) * 255) / (cmax - cmin); - - return x; -} - -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); - int volt = encode_volt(attr->index, simple_strtol(buf, NULL, 10)); - - 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); - int volt = encode_volt(attr->index, simple_strtol(buf, NULL, 10)); - - 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(struct adt7473_data *data, u8 raw) -{ - if (data->temp_twos_complement) - return (s8)raw; - return raw - 64; -} - -static u8 encode_temp(struct adt7473_data *data, int cooked) -{ - if (data->temp_twos_complement) - return (cooked & 0xFF); - return cooked + 64; -} - -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, 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); - int temp = simple_strtol(buf, NULL, 10) / 1000; - temp = encode_temp(data, 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, 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); - int temp = simple_strtol(buf, NULL, 10) / 1000; - temp = encode_temp(data, 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, 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); - int temp = simple_strtol(buf, NULL, 10); - - if (!temp) - return -EINVAL; - temp = FAN_RPM_TO_PERIOD(temp); - - 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); - int temp = simple_strtol(buf, NULL, 10); - temp = temp && 0xFF; - - 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); - int temp = simple_strtol(buf, NULL, 10); - - 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); - int temp = simple_strtol(buf, NULL, 10); - - 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); - int temp = simple_strtol(buf, NULL, 10); - - 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, 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); - int temp = simple_strtol(buf, NULL, 10) / 1000; - temp = encode_temp(data, 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, 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); - int temp = simple_strtol(buf, NULL, 10) / 1000; - temp = encode_temp(data, 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); - int temp = simple_strtol(buf, NULL, 10); - - 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); - int temp = simple_strtol(buf, NULL, 10); - - 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 -}; - -static int adt7473_attach_adapter(struct i2c_adapter *adapter) -{ - if (!(adapter->class & I2C_CLASS_HWMON)) - return 0; - return i2c_probe(adapter, &addr_data, adt7473_detect); -} - -static int adt7473_detect(struct i2c_adapter *adapter, int address, int kind) -{ - struct i2c_client *client; - struct adt7473_data *data; - int err = 0; - - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - goto exit; - - data = kzalloc(sizeof(struct adt7473_data), GFP_KERNEL); - if (!data) { - err = -ENOMEM; - goto exit; - } - - client = &data->client; - client->addr = address; - client->adapter = adapter; - client->driver = &adt7473_driver; - - i2c_set_clientdata(client, data); - - mutex_init(&data->lock); - - if (kind <= 0) { - int vendor, device, revision; - - vendor = i2c_smbus_read_byte_data(client, ADT7473_REG_VENDOR); - if (vendor != ADT7473_VENDOR) { - err = -ENODEV; - goto exit_free; - } - - device = i2c_smbus_read_byte_data(client, ADT7473_REG_DEVICE); - if (device != ADT7473_DEVICE) { - err = -ENODEV; - goto exit_free; - } - - revision = i2c_smbus_read_byte_data(client, - ADT7473_REG_REVISION); - if (revision != ADT7473_REV_68 && revision != ADT7473_REV_69) { - err = -ENODEV; - goto exit_free; - } - } else - dev_dbg(&adapter->dev, "detection forced\n"); - - strlcpy(client->name, "adt7473", I2C_NAME_SIZE); - - err = i2c_attach_client(client); - if (err) - goto exit_free; - - 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_detach; - - 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_detach: - i2c_detach_client(client); -exit_free: - kfree(data); -exit: - return err; -} - -static int adt7473_detach_client(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); - i2c_detach_client(client); - kfree(data); - return 0; -} - -static int __init adt7473_init(void) -{ - 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); |