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1beeffe433
Convert from class_device to device for hwmon_device_register/unregister Signed-off-by: Tony Jones <tonyj@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
1051 lines
34 KiB
C
1051 lines
34 KiB
C
/*
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* A hwmon driver for the Analog Devices ADT7470
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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 unsigned short normal_i2c[] = { 0x2C, 0x2E, 0x2F, I2C_CLIENT_END };
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/* Insmod parameters */
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I2C_CLIENT_INSMOD_1(adt7470);
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/* ADT7470 registers */
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#define ADT7470_REG_BASE_ADDR 0x20
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#define ADT7470_REG_TEMP_BASE_ADDR 0x20
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#define ADT7470_REG_TEMP_MAX_ADDR 0x29
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#define ADT7470_REG_FAN_BASE_ADDR 0x2A
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#define ADT7470_REG_FAN_MAX_ADDR 0x31
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#define ADT7470_REG_PWM_BASE_ADDR 0x32
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#define ADT7470_REG_PWM_MAX_ADDR 0x35
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#define ADT7470_REG_PWM_MAX_BASE_ADDR 0x38
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#define ADT7470_REG_PWM_MAX_MAX_ADDR 0x3B
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#define ADT7470_REG_CFG 0x40
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#define ADT7470_FSPD_MASK 0x04
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#define ADT7470_REG_ALARM1 0x41
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#define ADT7470_REG_ALARM2 0x42
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#define ADT7470_REG_TEMP_LIMITS_BASE_ADDR 0x44
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#define ADT7470_REG_TEMP_LIMITS_MAX_ADDR 0x57
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#define ADT7470_REG_FAN_MIN_BASE_ADDR 0x58
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#define ADT7470_REG_FAN_MIN_MAX_ADDR 0x5F
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#define ADT7470_REG_FAN_MAX_BASE_ADDR 0x60
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#define ADT7470_REG_FAN_MAX_MAX_ADDR 0x67
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#define ADT7470_REG_PWM_CFG_BASE_ADDR 0x68
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#define ADT7470_REG_PWM12_CFG 0x68
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#define ADT7470_PWM2_AUTO_MASK 0x40
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#define ADT7470_PWM1_AUTO_MASK 0x80
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#define ADT7470_REG_PWM34_CFG 0x69
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#define ADT7470_PWM3_AUTO_MASK 0x40
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#define ADT7470_PWM4_AUTO_MASK 0x80
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#define ADT7470_REG_PWM_MIN_BASE_ADDR 0x6A
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#define ADT7470_REG_PWM_MIN_MAX_ADDR 0x6D
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#define ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR 0x6E
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#define ADT7470_REG_PWM_TEMP_MIN_MAX_ADDR 0x71
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#define ADT7470_REG_ACOUSTICS12 0x75
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#define ADT7470_REG_ACOUSTICS34 0x76
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#define ADT7470_REG_DEVICE 0x3D
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#define ADT7470_REG_VENDOR 0x3E
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#define ADT7470_REG_REVISION 0x3F
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#define ADT7470_REG_ALARM1_MASK 0x72
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#define ADT7470_REG_ALARM2_MASK 0x73
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#define ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR 0x7C
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#define ADT7470_REG_PWM_AUTO_TEMP_MAX_ADDR 0x7D
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#define ADT7470_REG_MAX_ADDR 0x81
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#define ADT7470_TEMP_COUNT 10
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#define ADT7470_TEMP_REG(x) (ADT7470_REG_TEMP_BASE_ADDR + (x))
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#define ADT7470_TEMP_MIN_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + ((x) * 2))
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#define ADT7470_TEMP_MAX_REG(x) (ADT7470_REG_TEMP_LIMITS_BASE_ADDR + \
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((x) * 2) + 1)
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#define ADT7470_FAN_COUNT 4
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#define ADT7470_REG_FAN(x) (ADT7470_REG_FAN_BASE_ADDR + ((x) * 2))
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#define ADT7470_REG_FAN_MIN(x) (ADT7470_REG_FAN_MIN_BASE_ADDR + ((x) * 2))
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#define ADT7470_REG_FAN_MAX(x) (ADT7470_REG_FAN_MAX_BASE_ADDR + ((x) * 2))
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#define ADT7470_PWM_COUNT 4
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#define ADT7470_REG_PWM(x) (ADT7470_REG_PWM_BASE_ADDR + (x))
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#define ADT7470_REG_PWM_MAX(x) (ADT7470_REG_PWM_MAX_BASE_ADDR + (x))
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#define ADT7470_REG_PWM_MIN(x) (ADT7470_REG_PWM_MIN_BASE_ADDR + (x))
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#define ADT7470_REG_PWM_TMIN(x) (ADT7470_REG_PWM_TEMP_MIN_BASE_ADDR + (x))
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#define ADT7470_REG_PWM_CFG(x) (ADT7470_REG_PWM_CFG_BASE_ADDR + ((x) / 2))
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#define ADT7470_REG_PWM_AUTO_TEMP(x) (ADT7470_REG_PWM_AUTO_TEMP_BASE_ADDR + \
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((x) / 2))
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#define ADT7470_VENDOR 0x41
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#define ADT7470_DEVICE 0x70
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/* datasheet only mentions a revision 2 */
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#define ADT7470_REVISION 0x02
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/* "all temps" according to hwmon sysfs interface spec */
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#define ADT7470_PWM_ALL_TEMPS 0x3FF
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/* How often do we reread sensors values? (In jiffies) */
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#define SENSOR_REFRESH_INTERVAL (5 * 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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/* sleep 1s while gathering temperature data */
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#define TEMP_COLLECTION_TIME 1000
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#define power_of_2(x) (((x) & ((x) - 1)) == 0)
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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 adt7470_data {
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struct i2c_client client;
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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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s8 temp[ADT7470_TEMP_COUNT];
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s8 temp_min[ADT7470_TEMP_COUNT];
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s8 temp_max[ADT7470_TEMP_COUNT];
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u16 fan[ADT7470_FAN_COUNT];
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u16 fan_min[ADT7470_FAN_COUNT];
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u16 fan_max[ADT7470_FAN_COUNT];
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u16 alarms, alarms_mask;
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u8 force_pwm_max;
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u8 pwm[ADT7470_PWM_COUNT];
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u8 pwm_max[ADT7470_PWM_COUNT];
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u8 pwm_automatic[ADT7470_PWM_COUNT];
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u8 pwm_min[ADT7470_PWM_COUNT];
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s8 pwm_tmin[ADT7470_PWM_COUNT];
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u8 pwm_auto_temp[ADT7470_PWM_COUNT];
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};
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static int adt7470_attach_adapter(struct i2c_adapter *adapter);
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static int adt7470_detect(struct i2c_adapter *adapter, int address, int kind);
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static int adt7470_detach_client(struct i2c_client *client);
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static struct i2c_driver adt7470_driver = {
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.driver = {
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.name = "adt7470",
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},
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.attach_adapter = adt7470_attach_adapter,
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.detach_client = adt7470_detach_client,
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};
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/*
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* 16-bit registers on the ADT7470 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 adt7470_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 adt7470_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 adt7470_init_client(struct i2c_client *client)
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{
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int reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
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if (reg < 0) {
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dev_err(&client->dev, "cannot read configuration register\n");
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} else {
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/* start monitoring (and do a self-test) */
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i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, reg | 3);
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}
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}
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static struct adt7470_data *adt7470_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 adt7470_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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/* start reading temperature sensors */
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cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
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cfg |= 0x80;
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i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
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/*
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* Delay is 200ms * number of tmp05 sensors. Too bad
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* there's no way to figure out how many are connected.
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* For now, assume 1s will work.
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*/
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msleep(TEMP_COLLECTION_TIME);
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/* done reading temperature sensors */
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cfg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
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cfg &= ~0x80;
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i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, cfg);
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for (i = 0; i < ADT7470_TEMP_COUNT; i++)
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data->temp[i] = i2c_smbus_read_byte_data(client,
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ADT7470_TEMP_REG(i));
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for (i = 0; i < ADT7470_FAN_COUNT; i++)
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data->fan[i] = adt7470_read_word_data(client,
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ADT7470_REG_FAN(i));
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for (i = 0; i < ADT7470_PWM_COUNT; i++) {
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int reg;
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int reg_mask;
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data->pwm[i] = i2c_smbus_read_byte_data(client,
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ADT7470_REG_PWM(i));
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if (i % 2)
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reg_mask = ADT7470_PWM2_AUTO_MASK;
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else
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reg_mask = ADT7470_PWM1_AUTO_MASK;
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reg = ADT7470_REG_PWM_CFG(i);
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if (i2c_smbus_read_byte_data(client, reg) & reg_mask)
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data->pwm_automatic[i] = 1;
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else
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data->pwm_automatic[i] = 0;
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reg = ADT7470_REG_PWM_AUTO_TEMP(i);
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cfg = i2c_smbus_read_byte_data(client, reg);
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if (!(i % 2))
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data->pwm_auto_temp[i] = cfg >> 4;
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else
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data->pwm_auto_temp[i] = cfg & 0xF;
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}
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if (i2c_smbus_read_byte_data(client, ADT7470_REG_CFG) &
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ADT7470_FSPD_MASK)
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data->force_pwm_max = 1;
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else
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data->force_pwm_max = 0;
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data->alarms = adt7470_read_word_data(client, ADT7470_REG_ALARM1);
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data->alarms_mask = adt7470_read_word_data(client,
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ADT7470_REG_ALARM1_MASK);
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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 < ADT7470_TEMP_COUNT; i++) {
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data->temp_min[i] = i2c_smbus_read_byte_data(client,
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ADT7470_TEMP_MIN_REG(i));
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data->temp_max[i] = i2c_smbus_read_byte_data(client,
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ADT7470_TEMP_MAX_REG(i));
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}
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for (i = 0; i < ADT7470_FAN_COUNT; i++) {
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data->fan_min[i] = adt7470_read_word_data(client,
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ADT7470_REG_FAN_MIN(i));
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data->fan_max[i] = adt7470_read_word_data(client,
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ADT7470_REG_FAN_MAX(i));
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}
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for (i = 0; i < ADT7470_PWM_COUNT; i++) {
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data->pwm_max[i] = i2c_smbus_read_byte_data(client,
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ADT7470_REG_PWM_MAX(i));
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data->pwm_min[i] = i2c_smbus_read_byte_data(client,
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ADT7470_REG_PWM_MIN(i));
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data->pwm_tmin[i] = i2c_smbus_read_byte_data(client,
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ADT7470_REG_PWM_TMIN(i));
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}
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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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static ssize_t show_temp_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 adt7470_data *data = adt7470_update_device(dev);
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return sprintf(buf, "%d\n", 1000 * data->temp_min[attr->index]);
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}
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static ssize_t set_temp_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 adt7470_data *data = i2c_get_clientdata(client);
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int temp = simple_strtol(buf, NULL, 10) / 1000;
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mutex_lock(&data->lock);
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data->temp_min[attr->index] = temp;
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i2c_smbus_write_byte_data(client, ADT7470_TEMP_MIN_REG(attr->index),
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temp);
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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_temp_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 adt7470_data *data = adt7470_update_device(dev);
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return sprintf(buf, "%d\n", 1000 * data->temp_max[attr->index]);
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}
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static ssize_t set_temp_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 adt7470_data *data = i2c_get_clientdata(client);
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int temp = simple_strtol(buf, NULL, 10) / 1000;
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mutex_lock(&data->lock);
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data->temp_max[attr->index] = temp;
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i2c_smbus_write_byte_data(client, ADT7470_TEMP_MAX_REG(attr->index),
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temp);
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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_temp(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 adt7470_data *data = adt7470_update_device(dev);
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return sprintf(buf, "%d\n", 1000 * data->temp[attr->index]);
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}
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static ssize_t show_alarms(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 adt7470_data *data = adt7470_update_device(dev);
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if (attr->index)
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return sprintf(buf, "%x\n", data->alarms);
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else
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return sprintf(buf, "%x\n", data->alarms_mask);
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}
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static ssize_t show_fan_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 adt7470_data *data = adt7470_update_device(dev);
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if (FAN_DATA_VALID(data->fan_max[attr->index]))
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return sprintf(buf, "%d\n",
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FAN_PERIOD_TO_RPM(data->fan_max[attr->index]));
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else
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return sprintf(buf, "0\n");
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}
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static ssize_t set_fan_max(struct device *dev,
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struct device_attribute *devattr,
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const char *buf, 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 adt7470_data *data = i2c_get_clientdata(client);
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int temp = simple_strtol(buf, NULL, 10);
|
|
|
|
if (!temp)
|
|
return -EINVAL;
|
|
temp = FAN_RPM_TO_PERIOD(temp);
|
|
|
|
mutex_lock(&data->lock);
|
|
data->fan_max[attr->index] = temp;
|
|
adt7470_write_word_data(client, ADT7470_REG_FAN_MAX(attr->index), temp);
|
|
mutex_unlock(&data->lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
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 adt7470_data *data = adt7470_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 adt7470_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;
|
|
adt7470_write_word_data(client, ADT7470_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 adt7470_data *data = adt7470_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_force_pwm_max(struct device *dev,
|
|
struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct adt7470_data *data = adt7470_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->force_pwm_max);
|
|
}
|
|
|
|
static ssize_t set_force_pwm_max(struct device *dev,
|
|
struct device_attribute *devattr,
|
|
const char *buf,
|
|
size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adt7470_data *data = i2c_get_clientdata(client);
|
|
int temp = simple_strtol(buf, NULL, 10);
|
|
u8 reg;
|
|
|
|
mutex_lock(&data->lock);
|
|
data->force_pwm_max = temp;
|
|
reg = i2c_smbus_read_byte_data(client, ADT7470_REG_CFG);
|
|
if (temp)
|
|
reg |= ADT7470_FSPD_MASK;
|
|
else
|
|
reg &= ~ADT7470_FSPD_MASK;
|
|
i2c_smbus_write_byte_data(client, ADT7470_REG_CFG, 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 adt7470_data *data = adt7470_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 adt7470_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, ADT7470_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 adt7470_data *data = adt7470_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 adt7470_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, ADT7470_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 adt7470_data *data = adt7470_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 adt7470_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, ADT7470_REG_PWM_MIN(attr->index),
|
|
temp);
|
|
mutex_unlock(&data->lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm_tmax(struct device *dev,
|
|
struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct adt7470_data *data = adt7470_update_device(dev);
|
|
/* the datasheet says that tmax = tmin + 20C */
|
|
return sprintf(buf, "%d\n", 1000 * (20 + data->pwm_tmin[attr->index]));
|
|
}
|
|
|
|
static ssize_t show_pwm_tmin(struct device *dev,
|
|
struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct adt7470_data *data = adt7470_update_device(dev);
|
|
return sprintf(buf, "%d\n", 1000 * data->pwm_tmin[attr->index]);
|
|
}
|
|
|
|
static ssize_t set_pwm_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 adt7470_data *data = i2c_get_clientdata(client);
|
|
int temp = simple_strtol(buf, NULL, 10) / 1000;
|
|
|
|
mutex_lock(&data->lock);
|
|
data->pwm_tmin[attr->index] = temp;
|
|
i2c_smbus_write_byte_data(client, ADT7470_REG_PWM_TMIN(attr->index),
|
|
temp);
|
|
mutex_unlock(&data->lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm_auto(struct device *dev,
|
|
struct device_attribute *devattr,
|
|
char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct adt7470_data *data = adt7470_update_device(dev);
|
|
return sprintf(buf, "%d\n", 1 + data->pwm_automatic[attr->index]);
|
|
}
|
|
|
|
static ssize_t set_pwm_auto(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 adt7470_data *data = i2c_get_clientdata(client);
|
|
int temp = simple_strtol(buf, NULL, 10);
|
|
int pwm_auto_reg = ADT7470_REG_PWM_CFG(attr->index);
|
|
int pwm_auto_reg_mask;
|
|
u8 reg;
|
|
|
|
if (attr->index % 2)
|
|
pwm_auto_reg_mask = ADT7470_PWM2_AUTO_MASK;
|
|
else
|
|
pwm_auto_reg_mask = ADT7470_PWM1_AUTO_MASK;
|
|
|
|
if (temp != 2 && temp != 1)
|
|
return -EINVAL;
|
|
temp--;
|
|
|
|
mutex_lock(&data->lock);
|
|
data->pwm_automatic[attr->index] = temp;
|
|
reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
|
|
if (temp)
|
|
reg |= pwm_auto_reg_mask;
|
|
else
|
|
reg &= ~pwm_auto_reg_mask;
|
|
i2c_smbus_write_byte_data(client, pwm_auto_reg, 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 adt7470_data *data = adt7470_update_device(dev);
|
|
u8 ctrl = data->pwm_auto_temp[attr->index];
|
|
|
|
if (ctrl)
|
|
return sprintf(buf, "%d\n", 1 << (ctrl - 1));
|
|
else
|
|
return sprintf(buf, "%d\n", ADT7470_PWM_ALL_TEMPS);
|
|
}
|
|
|
|
static int cvt_auto_temp(int input)
|
|
{
|
|
if (input == ADT7470_PWM_ALL_TEMPS)
|
|
return 0;
|
|
if (input < 1 || !power_of_2(input))
|
|
return -EINVAL;
|
|
return ilog2(input) + 1;
|
|
}
|
|
|
|
static ssize_t set_pwm_auto_temp(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 adt7470_data *data = i2c_get_clientdata(client);
|
|
int temp = cvt_auto_temp(simple_strtol(buf, NULL, 10));
|
|
int pwm_auto_reg = ADT7470_REG_PWM_AUTO_TEMP(attr->index);
|
|
u8 reg;
|
|
|
|
if (temp < 0)
|
|
return temp;
|
|
|
|
mutex_lock(&data->lock);
|
|
data->pwm_automatic[attr->index] = temp;
|
|
reg = i2c_smbus_read_byte_data(client, pwm_auto_reg);
|
|
|
|
if (!(attr->index % 2)) {
|
|
reg &= 0xF;
|
|
reg |= (temp << 4) & 0xF0;
|
|
} else {
|
|
reg &= 0xF0;
|
|
reg |= temp & 0xF;
|
|
}
|
|
|
|
i2c_smbus_write_byte_data(client, pwm_auto_reg, reg);
|
|
mutex_unlock(&data->lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static SENSOR_DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(alarm_mask, S_IRUGO, show_alarms, NULL, 1);
|
|
|
|
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(temp4_max, S_IWUSR | S_IRUGO, show_temp_max,
|
|
set_temp_max, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_max, S_IWUSR | S_IRUGO, show_temp_max,
|
|
set_temp_max, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_max, S_IWUSR | S_IRUGO, show_temp_max,
|
|
set_temp_max, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_max, S_IWUSR | S_IRUGO, show_temp_max,
|
|
set_temp_max, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_max, S_IWUSR | S_IRUGO, show_temp_max,
|
|
set_temp_max, 7);
|
|
static SENSOR_DEVICE_ATTR(temp9_max, S_IWUSR | S_IRUGO, show_temp_max,
|
|
set_temp_max, 8);
|
|
static SENSOR_DEVICE_ATTR(temp10_max, S_IWUSR | S_IRUGO, show_temp_max,
|
|
set_temp_max, 9);
|
|
|
|
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(temp4_min, S_IWUSR | S_IRUGO, show_temp_min,
|
|
set_temp_min, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_min, S_IWUSR | S_IRUGO, show_temp_min,
|
|
set_temp_min, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_min, S_IWUSR | S_IRUGO, show_temp_min,
|
|
set_temp_min, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_min, S_IWUSR | S_IRUGO, show_temp_min,
|
|
set_temp_min, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_min, S_IWUSR | S_IRUGO, show_temp_min,
|
|
set_temp_min, 7);
|
|
static SENSOR_DEVICE_ATTR(temp9_min, S_IWUSR | S_IRUGO, show_temp_min,
|
|
set_temp_min, 8);
|
|
static SENSOR_DEVICE_ATTR(temp10_min, S_IWUSR | S_IRUGO, show_temp_min,
|
|
set_temp_min, 9);
|
|
|
|
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(temp4_input, S_IRUGO, show_temp, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7);
|
|
static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8);
|
|
static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO, show_temp, NULL, 9);
|
|
|
|
static SENSOR_DEVICE_ATTR(fan1_max, S_IWUSR | S_IRUGO, show_fan_max,
|
|
set_fan_max, 0);
|
|
static SENSOR_DEVICE_ATTR(fan2_max, S_IWUSR | S_IRUGO, show_fan_max,
|
|
set_fan_max, 1);
|
|
static SENSOR_DEVICE_ATTR(fan3_max, S_IWUSR | S_IRUGO, show_fan_max,
|
|
set_fan_max, 2);
|
|
static SENSOR_DEVICE_ATTR(fan4_max, S_IWUSR | S_IRUGO, show_fan_max,
|
|
set_fan_max, 3);
|
|
|
|
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(force_pwm_max, S_IWUSR | S_IRUGO,
|
|
show_force_pwm_max, set_force_pwm_max, 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(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
|
|
|
|
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(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm_min, set_pwm_min, 3);
|
|
|
|
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(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO,
|
|
show_pwm_max, set_pwm_max, 3);
|
|
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO,
|
|
show_pwm_tmin, set_pwm_tmin, 0);
|
|
static SENSOR_DEVICE_ATTR(pwm2_auto_point1_temp, S_IWUSR | S_IRUGO,
|
|
show_pwm_tmin, set_pwm_tmin, 1);
|
|
static SENSOR_DEVICE_ATTR(pwm3_auto_point1_temp, S_IWUSR | S_IRUGO,
|
|
show_pwm_tmin, set_pwm_tmin, 2);
|
|
static SENSOR_DEVICE_ATTR(pwm4_auto_point1_temp, S_IWUSR | S_IRUGO,
|
|
show_pwm_tmin, set_pwm_tmin, 3);
|
|
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IRUGO, show_pwm_tmax,
|
|
NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(pwm2_auto_point2_temp, S_IRUGO, show_pwm_tmax,
|
|
NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(pwm3_auto_point2_temp, S_IRUGO, show_pwm_tmax,
|
|
NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(pwm4_auto_point2_temp, S_IRUGO, show_pwm_tmax,
|
|
NULL, 3);
|
|
|
|
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
|
|
set_pwm_auto, 0);
|
|
static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
|
|
set_pwm_auto, 1);
|
|
static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
|
|
set_pwm_auto, 2);
|
|
static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_auto,
|
|
set_pwm_auto, 3);
|
|
|
|
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 SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IWUSR | S_IRUGO,
|
|
show_pwm_auto_temp, set_pwm_auto_temp, 3);
|
|
|
|
static struct attribute *adt7470_attr[] =
|
|
{
|
|
&sensor_dev_attr_alarms.dev_attr.attr,
|
|
&sensor_dev_attr_alarm_mask.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_temp4_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp9_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp10_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_temp4_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp9_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp10_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_temp4_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp5_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp6_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp7_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp8_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp9_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp10_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_max.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_max.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_max.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_max.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_force_pwm_max.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_pwm4.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_pwm4_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_pwm4_auto_point2_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm4_auto_point1_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm4_auto_point2_temp.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_pwm4_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,
|
|
&sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static int adt7470_attach_adapter(struct i2c_adapter *adapter)
|
|
{
|
|
if (!(adapter->class & I2C_CLASS_HWMON))
|
|
return 0;
|
|
return i2c_probe(adapter, &addr_data, adt7470_detect);
|
|
}
|
|
|
|
static int adt7470_detect(struct i2c_adapter *adapter, int address, int kind)
|
|
{
|
|
struct i2c_client *client;
|
|
struct adt7470_data *data;
|
|
int err = 0;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
goto exit;
|
|
|
|
if (!(data = kzalloc(sizeof(struct adt7470_data), GFP_KERNEL))) {
|
|
err = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
client = &data->client;
|
|
client->addr = address;
|
|
client->adapter = adapter;
|
|
client->driver = &adt7470_driver;
|
|
|
|
i2c_set_clientdata(client, data);
|
|
|
|
mutex_init(&data->lock);
|
|
|
|
if (kind <= 0) {
|
|
int vendor, device, revision;
|
|
|
|
vendor = i2c_smbus_read_byte_data(client, ADT7470_REG_VENDOR);
|
|
if (vendor != ADT7470_VENDOR) {
|
|
err = -ENODEV;
|
|
goto exit_free;
|
|
}
|
|
|
|
device = i2c_smbus_read_byte_data(client, ADT7470_REG_DEVICE);
|
|
if (device != ADT7470_DEVICE) {
|
|
err = -ENODEV;
|
|
goto exit_free;
|
|
}
|
|
|
|
revision = i2c_smbus_read_byte_data(client,
|
|
ADT7470_REG_REVISION);
|
|
if (revision != ADT7470_REVISION) {
|
|
err = -ENODEV;
|
|
goto exit_free;
|
|
}
|
|
} else
|
|
dev_dbg(&adapter->dev, "detection forced\n");
|
|
|
|
strlcpy(client->name, "adt7470", I2C_NAME_SIZE);
|
|
|
|
if ((err = i2c_attach_client(client)))
|
|
goto exit_free;
|
|
|
|
dev_info(&client->dev, "%s chip found\n", client->name);
|
|
|
|
/* Initialize the ADT7470 chip */
|
|
adt7470_init_client(client);
|
|
|
|
/* Register sysfs hooks */
|
|
data->attrs.attrs = adt7470_attr;
|
|
if ((err = sysfs_create_group(&client->dev.kobj, &data->attrs)))
|
|
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 adt7470_detach_client(struct i2c_client *client)
|
|
{
|
|
struct adt7470_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 adt7470_init(void)
|
|
{
|
|
return i2c_add_driver(&adt7470_driver);
|
|
}
|
|
|
|
static void __exit adt7470_exit(void)
|
|
{
|
|
i2c_del_driver(&adt7470_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Darrick J. Wong <djwong@us.ibm.com>");
|
|
MODULE_DESCRIPTION("ADT7470 driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(adt7470_init);
|
|
module_exit(adt7470_exit);
|