![Jean Delvare](/assets/img/avatar_default.png)
Fix voltage conversion routines. Based on an earlier patch from Paulius Zaleckas. According to the datasheet voltage is scaled with resistors and value 192 is nominal voltage. 0 is 0V. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Paulius Zaleckas <paulius.zaleckas@teltonika.lt> Cc: Darrick J. Wong <djwong@us.ibm.com>
1131 lines
34 KiB
C
1131 lines
34 KiB
C
/*
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* A hwmon driver for the Analog Devices ADT7473
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* Copyright (C) 2007 IBM
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*
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* Author: Darrick J. Wong <djwong@us.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/module.h>
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#include <linux/jiffies.h>
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#include <linux/i2c.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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#include <linux/delay.h>
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#include <linux/log2.h>
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/* Addresses to scan */
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static const unsigned short normal_i2c[] = { 0x2C, 0x2D, 0x2E, I2C_CLIENT_END };
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/* Insmod parameters */
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I2C_CLIENT_INSMOD_1(adt7473);
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/* ADT7473 registers */
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#define ADT7473_REG_BASE_ADDR 0x20
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#define ADT7473_REG_VOLT_BASE_ADDR 0x21
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#define ADT7473_REG_VOLT_MIN_BASE_ADDR 0x46
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#define ADT7473_REG_TEMP_BASE_ADDR 0x25
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#define ADT7473_REG_TEMP_LIMITS_BASE_ADDR 0x4E
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#define ADT7473_REG_TEMP_TMIN_BASE_ADDR 0x67
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#define ADT7473_REG_TEMP_TMAX_BASE_ADDR 0x6A
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#define ADT7473_REG_FAN_BASE_ADDR 0x28
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#define ADT7473_REG_FAN_MIN_BASE_ADDR 0x54
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#define ADT7473_REG_PWM_BASE_ADDR 0x30
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#define ADT7473_REG_PWM_MIN_BASE_ADDR 0x64
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#define ADT7473_REG_PWM_MAX_BASE_ADDR 0x38
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#define ADT7473_REG_PWM_BHVR_BASE_ADDR 0x5C
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#define ADT7473_PWM_BHVR_MASK 0xE0
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#define ADT7473_PWM_BHVR_SHIFT 5
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#define ADT7473_REG_CFG1 0x40
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#define ADT7473_CFG1_START 0x01
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#define ADT7473_CFG1_READY 0x04
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#define ADT7473_REG_CFG2 0x73
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#define ADT7473_REG_CFG3 0x78
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#define ADT7473_REG_CFG4 0x7D
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#define ADT7473_CFG4_MAX_DUTY_AT_OVT 0x08
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#define ADT7473_REG_CFG5 0x7C
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#define ADT7473_CFG5_TEMP_TWOS 0x01
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#define ADT7473_CFG5_TEMP_OFFSET 0x02
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#define ADT7473_REG_DEVICE 0x3D
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#define ADT7473_VENDOR 0x41
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#define ADT7473_REG_VENDOR 0x3E
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#define ADT7473_DEVICE 0x73
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#define ADT7473_REG_REVISION 0x3F
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#define ADT7473_REV_68 0x68
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#define ADT7473_REV_69 0x69
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#define ADT7473_REG_ALARM1 0x41
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#define ADT7473_VCCP_ALARM 0x02
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#define ADT7473_VCC_ALARM 0x04
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#define ADT7473_R1T_ALARM 0x10
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#define ADT7473_LT_ALARM 0x20
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#define ADT7473_R2T_ALARM 0x40
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#define ADT7473_OOL 0x80
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#define ADT7473_REG_ALARM2 0x42
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#define ADT7473_OVT_ALARM 0x02
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#define ADT7473_FAN1_ALARM 0x04
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#define ADT7473_FAN2_ALARM 0x08
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#define ADT7473_FAN3_ALARM 0x10
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#define ADT7473_FAN4_ALARM 0x20
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#define ADT7473_R1T_SHORT 0x40
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#define ADT7473_R2T_SHORT 0x80
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#define ALARM2(x) ((x) << 8)
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#define ADT7473_VOLT_COUNT 2
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#define ADT7473_REG_VOLT(x) (ADT7473_REG_VOLT_BASE_ADDR + (x))
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#define ADT7473_REG_VOLT_MIN(x) (ADT7473_REG_VOLT_MIN_BASE_ADDR + ((x) * 2))
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#define ADT7473_REG_VOLT_MAX(x) (ADT7473_REG_VOLT_MIN_BASE_ADDR + \
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((x) * 2) + 1)
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#define ADT7473_TEMP_COUNT 3
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#define ADT7473_REG_TEMP(x) (ADT7473_REG_TEMP_BASE_ADDR + (x))
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#define ADT7473_REG_TEMP_MIN(x) (ADT7473_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2))
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#define ADT7473_REG_TEMP_MAX(x) (ADT7473_REG_TEMP_LIMITS_BASE_ADDR + \
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((x) * 2) + 1)
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#define ADT7473_REG_TEMP_TMIN(x) (ADT7473_REG_TEMP_TMIN_BASE_ADDR + (x))
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#define ADT7473_REG_TEMP_TMAX(x) (ADT7473_REG_TEMP_TMAX_BASE_ADDR + (x))
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#define ADT7473_FAN_COUNT 4
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#define ADT7473_REG_FAN(x) (ADT7473_REG_FAN_BASE_ADDR + ((x) * 2))
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#define ADT7473_REG_FAN_MIN(x) (ADT7473_REG_FAN_MIN_BASE_ADDR + ((x) * 2))
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#define ADT7473_PWM_COUNT 3
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#define ADT7473_REG_PWM(x) (ADT7473_REG_PWM_BASE_ADDR + (x))
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#define ADT7473_REG_PWM_MAX(x) (ADT7473_REG_PWM_MAX_BASE_ADDR + (x))
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#define ADT7473_REG_PWM_MIN(x) (ADT7473_REG_PWM_MIN_BASE_ADDR + (x))
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#define ADT7473_REG_PWM_BHVR(x) (ADT7473_REG_PWM_BHVR_BASE_ADDR + (x))
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/* How often do we reread sensors values? (In jiffies) */
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#define SENSOR_REFRESH_INTERVAL (2 * HZ)
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/* How often do we reread sensor limit values? (In jiffies) */
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#define LIMIT_REFRESH_INTERVAL (60 * HZ)
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/* datasheet says to divide this number by the fan reading to get fan rpm */
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#define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x))
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#define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM
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#define FAN_PERIOD_INVALID 65535
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#define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID)
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struct adt7473_data {
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struct device *hwmon_dev;
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struct attribute_group attrs;
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struct mutex lock;
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char sensors_valid;
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char limits_valid;
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unsigned long sensors_last_updated; /* In jiffies */
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unsigned long limits_last_updated; /* In jiffies */
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u8 volt[ADT7473_VOLT_COUNT];
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s8 volt_min[ADT7473_VOLT_COUNT];
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s8 volt_max[ADT7473_VOLT_COUNT];
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s8 temp[ADT7473_TEMP_COUNT];
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s8 temp_min[ADT7473_TEMP_COUNT];
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s8 temp_max[ADT7473_TEMP_COUNT];
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s8 temp_tmin[ADT7473_TEMP_COUNT];
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/* This is called the !THERM limit in the datasheet */
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s8 temp_tmax[ADT7473_TEMP_COUNT];
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u16 fan[ADT7473_FAN_COUNT];
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u16 fan_min[ADT7473_FAN_COUNT];
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u8 pwm[ADT7473_PWM_COUNT];
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u8 pwm_max[ADT7473_PWM_COUNT];
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u8 pwm_min[ADT7473_PWM_COUNT];
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u8 pwm_behavior[ADT7473_PWM_COUNT];
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u8 temp_twos_complement;
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u8 temp_offset;
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u16 alarm;
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u8 max_duty_at_overheat;
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};
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static int adt7473_probe(struct i2c_client *client,
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const struct i2c_device_id *id);
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static int adt7473_detect(struct i2c_client *client, int kind,
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struct i2c_board_info *info);
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static int adt7473_remove(struct i2c_client *client);
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static const struct i2c_device_id adt7473_id[] = {
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{ "adt7473", adt7473 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, adt7473_id);
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static struct i2c_driver adt7473_driver = {
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.class = I2C_CLASS_HWMON,
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.driver = {
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.name = "adt7473",
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},
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.probe = adt7473_probe,
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.remove = adt7473_remove,
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.id_table = adt7473_id,
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.detect = adt7473_detect,
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.address_data = &addr_data,
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};
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/*
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* 16-bit registers on the ADT7473 are low-byte first. The data sheet says
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* that the low byte must be read before the high byte.
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*/
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static inline int adt7473_read_word_data(struct i2c_client *client, u8 reg)
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{
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u16 foo;
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foo = i2c_smbus_read_byte_data(client, reg);
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foo |= ((u16)i2c_smbus_read_byte_data(client, reg + 1) << 8);
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return foo;
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}
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static inline int adt7473_write_word_data(struct i2c_client *client, u8 reg,
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u16 value)
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{
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return i2c_smbus_write_byte_data(client, reg, value & 0xFF)
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&& i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
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}
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static void adt7473_init_client(struct i2c_client *client)
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{
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int reg = i2c_smbus_read_byte_data(client, ADT7473_REG_CFG1);
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if (!(reg & ADT7473_CFG1_READY)) {
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dev_err(&client->dev, "Chip not ready.\n");
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} else {
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/* start monitoring */
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i2c_smbus_write_byte_data(client, ADT7473_REG_CFG1,
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reg | ADT7473_CFG1_START);
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}
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}
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static struct adt7473_data *adt7473_update_device(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct adt7473_data *data = i2c_get_clientdata(client);
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unsigned long local_jiffies = jiffies;
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u8 cfg;
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int i;
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mutex_lock(&data->lock);
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if (time_before(local_jiffies, data->sensors_last_updated +
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SENSOR_REFRESH_INTERVAL)
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&& data->sensors_valid)
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goto no_sensor_update;
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for (i = 0; i < ADT7473_VOLT_COUNT; i++)
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data->volt[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_VOLT(i));
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/* Determine temperature encoding */
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cfg = i2c_smbus_read_byte_data(client, ADT7473_REG_CFG5);
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data->temp_twos_complement = (cfg & ADT7473_CFG5_TEMP_TWOS);
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/*
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* What does this do? it implies a variable temperature sensor
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* offset, but the datasheet doesn't say anything about this bit
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* and other parts of the datasheet imply that "offset64" mode
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* means that you shift temp values by -64 if the above bit was set.
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*/
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data->temp_offset = (cfg & ADT7473_CFG5_TEMP_OFFSET);
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for (i = 0; i < ADT7473_TEMP_COUNT; i++)
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data->temp[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_TEMP(i));
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for (i = 0; i < ADT7473_FAN_COUNT; i++)
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data->fan[i] = adt7473_read_word_data(client,
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ADT7473_REG_FAN(i));
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for (i = 0; i < ADT7473_PWM_COUNT; i++)
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data->pwm[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_PWM(i));
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data->alarm = i2c_smbus_read_byte_data(client, ADT7473_REG_ALARM1);
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if (data->alarm & ADT7473_OOL)
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data->alarm |= ALARM2(i2c_smbus_read_byte_data(client,
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ADT7473_REG_ALARM2));
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data->sensors_last_updated = local_jiffies;
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data->sensors_valid = 1;
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no_sensor_update:
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if (time_before(local_jiffies, data->limits_last_updated +
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LIMIT_REFRESH_INTERVAL)
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&& data->limits_valid)
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goto out;
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for (i = 0; i < ADT7473_VOLT_COUNT; i++) {
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data->volt_min[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_VOLT_MIN(i));
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data->volt_max[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_VOLT_MAX(i));
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}
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for (i = 0; i < ADT7473_TEMP_COUNT; i++) {
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data->temp_min[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_TEMP_MIN(i));
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data->temp_max[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_TEMP_MAX(i));
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data->temp_tmin[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_TEMP_TMIN(i));
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data->temp_tmax[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_TEMP_TMAX(i));
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}
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for (i = 0; i < ADT7473_FAN_COUNT; i++)
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data->fan_min[i] = adt7473_read_word_data(client,
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ADT7473_REG_FAN_MIN(i));
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for (i = 0; i < ADT7473_PWM_COUNT; i++) {
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data->pwm_max[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_PWM_MAX(i));
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data->pwm_min[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_PWM_MIN(i));
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data->pwm_behavior[i] = i2c_smbus_read_byte_data(client,
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ADT7473_REG_PWM_BHVR(i));
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}
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i = i2c_smbus_read_byte_data(client, ADT7473_REG_CFG4);
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data->max_duty_at_overheat = !!(i & ADT7473_CFG4_MAX_DUTY_AT_OVT);
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data->limits_last_updated = local_jiffies;
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data->limits_valid = 1;
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out:
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mutex_unlock(&data->lock);
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return data;
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}
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/*
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* Conversions
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*/
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/* IN are scaled acording to built-in resistors */
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static const int adt7473_scaling[] = { /* .001 Volts */
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2250, 3300
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};
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#define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
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static int decode_volt(int volt_index, u8 raw)
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{
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return SCALE(raw, 192, adt7473_scaling[volt_index]);
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}
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static u8 encode_volt(int volt_index, int cooked)
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{
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int raw = SCALE(cooked, adt7473_scaling[volt_index], 192);
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return SENSORS_LIMIT(raw, 0, 255);
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}
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static ssize_t show_volt_min(struct device *dev,
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struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct adt7473_data *data = adt7473_update_device(dev);
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return sprintf(buf, "%d\n",
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decode_volt(attr->index, data->volt_min[attr->index]));
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}
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static ssize_t set_volt_min(struct device *dev,
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struct device_attribute *devattr,
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const char *buf,
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size_t count)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct i2c_client *client = to_i2c_client(dev);
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struct adt7473_data *data = i2c_get_clientdata(client);
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int volt = encode_volt(attr->index, simple_strtol(buf, NULL, 10));
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mutex_lock(&data->lock);
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data->volt_min[attr->index] = volt;
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i2c_smbus_write_byte_data(client, ADT7473_REG_VOLT_MIN(attr->index),
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volt);
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mutex_unlock(&data->lock);
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return count;
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}
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static ssize_t show_volt_max(struct device *dev,
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struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct adt7473_data *data = adt7473_update_device(dev);
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return sprintf(buf, "%d\n",
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decode_volt(attr->index, data->volt_max[attr->index]));
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}
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static ssize_t set_volt_max(struct device *dev,
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struct device_attribute *devattr,
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const char *buf,
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size_t count)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct i2c_client *client = to_i2c_client(dev);
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struct adt7473_data *data = i2c_get_clientdata(client);
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int volt = encode_volt(attr->index, simple_strtol(buf, NULL, 10));
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mutex_lock(&data->lock);
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data->volt_max[attr->index] = volt;
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i2c_smbus_write_byte_data(client, ADT7473_REG_VOLT_MAX(attr->index),
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volt);
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mutex_unlock(&data->lock);
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return count;
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}
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static ssize_t show_volt(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct adt7473_data *data = adt7473_update_device(dev);
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return sprintf(buf, "%d\n",
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decode_volt(attr->index, data->volt[attr->index]));
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}
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/*
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* This chip can report temperature data either as a two's complement
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* number in the range -128 to 127, or as an unsigned number that must
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* 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)
|
|
{
|
|
return twos_complement ? cooked & 0xFF : 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->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);
|
|
int temp = simple_strtol(buf, NULL, 10) / 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);
|
|
int temp = simple_strtol(buf, NULL, 10) / 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);
|
|
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);
|
|
|
|
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->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);
|
|
int temp = simple_strtol(buf, NULL, 10) / 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);
|
|
int temp = simple_strtol(buf, NULL, 10) / 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);
|
|
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
|
|
};
|
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */
|
|
static int adt7473_detect(struct i2c_client *client, int kind,
|
|
struct i2c_board_info *info)
|
|
{
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -ENODEV;
|
|
|
|
if (kind <= 0) {
|
|
int vendor, device, revision;
|
|
|
|
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;
|
|
} else
|
|
dev_dbg(&adapter->dev, "detection forced\n");
|
|
|
|
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)
|
|
{
|
|
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);
|