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![Jordan Crouse](/assets/img/avatar_default.png)
Hwmon driver for the ADT7475 chip. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
1221 lines
34 KiB
C
1221 lines
34 KiB
C
/*
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* adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
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* Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
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* Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
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* Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
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* Derived from the lm83 driver by Jean Delvare
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.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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/* Indexes for the sysfs hooks */
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#define INPUT 0
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#define MIN 1
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#define MAX 2
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#define CONTROL 3
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#define OFFSET 3
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#define AUTOMIN 4
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#define THERM 5
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#define HYSTERSIS 6
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/* These are unique identifiers for the sysfs functions - unlike the
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numbers above, these are not also indexes into an array
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*/
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#define ALARM 9
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#define FAULT 10
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/* 7475 Common Registers */
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#define REG_VOLTAGE_BASE 0x21
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#define REG_TEMP_BASE 0x25
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#define REG_TACH_BASE 0x28
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#define REG_PWM_BASE 0x30
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#define REG_PWM_MAX_BASE 0x38
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#define REG_DEVID 0x3D
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#define REG_VENDID 0x3E
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#define REG_STATUS1 0x41
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#define REG_STATUS2 0x42
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#define REG_VOLTAGE_MIN_BASE 0x46
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#define REG_VOLTAGE_MAX_BASE 0x47
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#define REG_TEMP_MIN_BASE 0x4E
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#define REG_TEMP_MAX_BASE 0x4F
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#define REG_TACH_MIN_BASE 0x54
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#define REG_PWM_CONFIG_BASE 0x5C
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#define REG_TEMP_TRANGE_BASE 0x5F
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#define REG_PWM_MIN_BASE 0x64
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#define REG_TEMP_TMIN_BASE 0x67
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#define REG_TEMP_THERM_BASE 0x6A
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#define REG_REMOTE1_HYSTERSIS 0x6D
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#define REG_REMOTE2_HYSTERSIS 0x6E
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#define REG_TEMP_OFFSET_BASE 0x70
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#define REG_EXTEND1 0x76
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#define REG_EXTEND2 0x77
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#define REG_CONFIG5 0x7C
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#define CONFIG5_TWOSCOMP 0x01
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#define CONFIG5_TEMPOFFSET 0x02
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/* ADT7475 Settings */
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#define ADT7475_VOLTAGE_COUNT 2
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#define ADT7475_TEMP_COUNT 3
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#define ADT7475_TACH_COUNT 4
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#define ADT7475_PWM_COUNT 3
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/* Macro to read the registers */
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#define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg))
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/* Macros to easily index the registers */
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#define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2))
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#define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2))
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#define PWM_REG(idx) (REG_PWM_BASE + (idx))
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#define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx))
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#define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx))
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#define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx))
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#define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx))
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#define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2))
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#define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2))
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#define TEMP_REG(idx) (REG_TEMP_BASE + (idx))
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#define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2))
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#define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2))
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#define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx))
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#define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx))
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#define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
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#define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
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static unsigned short normal_i2c[] = { 0x2e, I2C_CLIENT_END };
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I2C_CLIENT_INSMOD_1(adt7475);
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static const struct i2c_device_id adt7475_id[] = {
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{ "adt7475", adt7475 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, adt7475_id);
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struct adt7475_data {
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struct device *hwmon_dev;
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struct mutex lock;
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unsigned long measure_updated;
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unsigned long limits_updated;
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char valid;
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u8 config5;
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u16 alarms;
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u16 voltage[3][3];
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u16 temp[7][3];
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u16 tach[2][4];
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u8 pwm[4][3];
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u8 range[3];
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u8 pwmctl[3];
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u8 pwmchan[3];
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};
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static struct i2c_driver adt7475_driver;
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static struct adt7475_data *adt7475_update_device(struct device *dev);
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static void adt7475_read_hystersis(struct i2c_client *client);
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static void adt7475_read_pwm(struct i2c_client *client, int index);
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/* Given a temp value, convert it to register value */
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static inline u16 temp2reg(struct adt7475_data *data, long val)
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{
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u16 ret;
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if (!(data->config5 & CONFIG5_TWOSCOMP)) {
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val = SENSORS_LIMIT(val, -64000, 191000);
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ret = (val + 64500) / 1000;
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} else {
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val = SENSORS_LIMIT(val, -128000, 127000);
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if (val < -500)
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ret = (256500 + val) / 1000;
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else
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ret = (val + 500) / 1000;
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}
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return ret << 2;
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}
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/* Given a register value, convert it to a real temp value */
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static inline int reg2temp(struct adt7475_data *data, u16 reg)
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{
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if (data->config5 & CONFIG5_TWOSCOMP) {
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if (reg >= 512)
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return (reg - 1024) * 250;
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else
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return reg * 250;
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} else
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return (reg - 256) * 250;
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}
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static inline int tach2rpm(u16 tach)
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{
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if (tach == 0 || tach == 0xFFFF)
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return 0;
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return (90000 * 60) / tach;
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}
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static inline u16 rpm2tach(unsigned long rpm)
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{
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if (rpm == 0)
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return 0;
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return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF);
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}
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static inline int reg2vcc(u16 reg)
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{
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return (4296 * reg) / 1000;
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}
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static inline int reg2vccp(u16 reg)
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{
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return (2929 * reg) / 1000;
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}
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static inline u16 vcc2reg(long vcc)
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{
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vcc = SENSORS_LIMIT(vcc, 0, 4396);
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return (vcc * 1000) / 4296;
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}
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static inline u16 vccp2reg(long vcc)
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{
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vcc = SENSORS_LIMIT(vcc, 0, 2998);
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return (vcc * 1000) / 2929;
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}
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static u16 adt7475_read_word(struct i2c_client *client, int reg)
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{
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u16 val;
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val = i2c_smbus_read_byte_data(client, reg);
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val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8);
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return val;
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}
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static void adt7475_write_word(struct i2c_client *client, int reg, u16 val)
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{
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i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
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i2c_smbus_write_byte_data(client, reg, val & 0xFF);
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}
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/* Find the nearest value in a table - used for pwm frequency and
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auto temp range */
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static int find_nearest(long val, const int *array, int size)
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{
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int i;
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if (val < array[0])
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return 0;
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if (val > array[size - 1])
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return size - 1;
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for (i = 0; i < size - 1; i++) {
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int a, b;
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if (val > array[i + 1])
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continue;
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a = val - array[i];
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b = array[i + 1] - val;
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return (a <= b) ? i : i + 1;
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}
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return 0;
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}
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static ssize_t show_voltage(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct adt7475_data *data = adt7475_update_device(dev);
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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unsigned short val;
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switch (sattr->nr) {
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case ALARM:
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return sprintf(buf, "%d\n",
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(data->alarms >> (sattr->index + 1)) & 1);
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default:
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val = data->voltage[sattr->nr][sattr->index];
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return sprintf(buf, "%d\n",
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sattr->index ==
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0 ? reg2vccp(val) : reg2vcc(val));
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}
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}
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static ssize_t set_voltage(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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struct i2c_client *client = to_i2c_client(dev);
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struct adt7475_data *data = i2c_get_clientdata(client);
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unsigned char reg;
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long val;
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if (strict_strtol(buf, 10, &val))
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return -EINVAL;
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mutex_lock(&data->lock);
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data->voltage[sattr->nr][sattr->index] =
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sattr->index ? vcc2reg(val) : vccp2reg(val);
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if (sattr->nr == MIN)
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reg = VOLTAGE_MIN_REG(sattr->index);
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else
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reg = VOLTAGE_MAX_REG(sattr->index);
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i2c_smbus_write_byte_data(client, reg,
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data->voltage[sattr->nr][sattr->index] >> 2);
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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 *attr,
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char *buf)
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{
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struct adt7475_data *data = adt7475_update_device(dev);
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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int out;
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switch (sattr->nr) {
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case HYSTERSIS:
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mutex_lock(&data->lock);
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out = data->temp[sattr->nr][sattr->index];
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if (sattr->index != 1)
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out = (out >> 4) & 0xF;
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else
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out = (out & 0xF);
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/* Show the value as an absolute number tied to
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* THERM */
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out = reg2temp(data, data->temp[THERM][sattr->index]) -
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out * 1000;
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mutex_unlock(&data->lock);
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break;
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case OFFSET:
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/* Offset is always 2's complement, regardless of the
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* setting in CONFIG5 */
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mutex_lock(&data->lock);
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out = (s8)data->temp[sattr->nr][sattr->index];
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if (data->config5 & CONFIG5_TEMPOFFSET)
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out *= 1000;
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else
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out *= 500;
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mutex_unlock(&data->lock);
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break;
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case ALARM:
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out = (data->alarms >> (sattr->index + 4)) & 1;
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break;
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case FAULT:
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/* Note - only for remote1 and remote2 */
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out = data->alarms & (sattr->index ? 0x8000 : 0x4000);
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out = out ? 0 : 1;
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break;
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default:
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/* All other temp values are in the configured format */
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out = reg2temp(data, data->temp[sattr->nr][sattr->index]);
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}
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return sprintf(buf, "%d\n", out);
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}
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static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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struct i2c_client *client = to_i2c_client(dev);
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struct adt7475_data *data = i2c_get_clientdata(client);
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unsigned char reg = 0;
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u8 out;
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int temp;
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long val;
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if (strict_strtol(buf, 10, &val))
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return -EINVAL;
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mutex_lock(&data->lock);
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/* We need the config register in all cases for temp <-> reg conv. */
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data->config5 = adt7475_read(REG_CONFIG5);
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switch (sattr->nr) {
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case OFFSET:
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if (data->config5 & CONFIG5_TEMPOFFSET) {
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val = SENSORS_LIMIT(val, -63000, 127000);
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out = data->temp[OFFSET][sattr->index] = val / 1000;
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} else {
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val = SENSORS_LIMIT(val, -63000, 64000);
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out = data->temp[OFFSET][sattr->index] = val / 500;
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}
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break;
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case HYSTERSIS:
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/* The value will be given as an absolute value, turn it
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into an offset based on THERM */
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/* Read fresh THERM and HYSTERSIS values from the chip */
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data->temp[THERM][sattr->index] =
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adt7475_read(TEMP_THERM_REG(sattr->index)) << 2;
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adt7475_read_hystersis(client);
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temp = reg2temp(data, data->temp[THERM][sattr->index]);
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val = SENSORS_LIMIT(val, temp - 15000, temp);
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val = (temp - val) / 1000;
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if (sattr->index != 1) {
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data->temp[HYSTERSIS][sattr->index] &= 0xF0;
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data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4;
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} else {
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data->temp[HYSTERSIS][sattr->index] &= 0x0F;
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data->temp[HYSTERSIS][sattr->index] |= (val & 0xF);
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}
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out = data->temp[HYSTERSIS][sattr->index];
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break;
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default:
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data->temp[sattr->nr][sattr->index] = temp2reg(data, val);
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/* We maintain an extra 2 digits of precision for simplicity
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* - shift those back off before writing the value */
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out = (u8) (data->temp[sattr->nr][sattr->index] >> 2);
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}
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switch (sattr->nr) {
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case MIN:
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reg = TEMP_MIN_REG(sattr->index);
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break;
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case MAX:
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reg = TEMP_MAX_REG(sattr->index);
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break;
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case OFFSET:
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reg = TEMP_OFFSET_REG(sattr->index);
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break;
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case AUTOMIN:
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reg = TEMP_TMIN_REG(sattr->index);
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break;
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case THERM:
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reg = TEMP_THERM_REG(sattr->index);
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break;
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case HYSTERSIS:
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if (sattr->index != 2)
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reg = REG_REMOTE1_HYSTERSIS;
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else
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reg = REG_REMOTE2_HYSTERSIS;
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break;
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}
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i2c_smbus_write_byte_data(client, reg, out);
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mutex_unlock(&data->lock);
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return count;
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}
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/* Table of autorange values - the user will write the value in millidegrees,
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and we'll convert it */
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static const int autorange_table[] = {
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2000, 2500, 3330, 4000, 5000, 6670, 8000,
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10000, 13330, 16000, 20000, 26670, 32000, 40000,
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53330, 80000
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};
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static ssize_t show_point2(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct adt7475_data *data = adt7475_update_device(dev);
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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int out, val;
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mutex_lock(&data->lock);
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out = (data->range[sattr->index] >> 4) & 0x0F;
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val = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
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mutex_unlock(&data->lock);
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return sprintf(buf, "%d\n", val + autorange_table[out]);
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}
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static ssize_t set_point2(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct adt7475_data *data = i2c_get_clientdata(client);
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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int temp;
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long val;
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if (strict_strtol(buf, 10, &val))
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return -EINVAL;
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mutex_lock(&data->lock);
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/* Get a fresh copy of the needed registers */
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data->config5 = adt7475_read(REG_CONFIG5);
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data->temp[AUTOMIN][sattr->index] =
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adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2;
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data->range[sattr->index] =
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adt7475_read(TEMP_TRANGE_REG(sattr->index));
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|
|
|
/* The user will write an absolute value, so subtract the start point
|
|
to figure the range */
|
|
temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]);
|
|
val = SENSORS_LIMIT(val, temp + autorange_table[0],
|
|
temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]);
|
|
val -= temp;
|
|
|
|
/* Find the nearest table entry to what the user wrote */
|
|
val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table));
|
|
|
|
data->range[sattr->index] &= ~0xF0;
|
|
data->range[sattr->index] |= val << 4;
|
|
|
|
i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
|
|
data->range[sattr->index]);
|
|
|
|
mutex_unlock(&data->lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_tach(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct adt7475_data *data = adt7475_update_device(dev);
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
int out;
|
|
|
|
if (sattr->nr == ALARM)
|
|
out = (data->alarms >> (sattr->index + 10)) & 1;
|
|
else
|
|
out = tach2rpm(data->tach[sattr->nr][sattr->index]);
|
|
|
|
return sprintf(buf, "%d\n", out);
|
|
}
|
|
|
|
static ssize_t set_tach(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
unsigned long val;
|
|
|
|
if (strict_strtoul(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
data->tach[MIN][sattr->index] = rpm2tach(val);
|
|
|
|
adt7475_write_word(client, TACH_MIN_REG(sattr->index),
|
|
data->tach[MIN][sattr->index]);
|
|
|
|
mutex_unlock(&data->lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct adt7475_data *data = adt7475_update_device(dev);
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
|
|
return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]);
|
|
}
|
|
|
|
static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct adt7475_data *data = adt7475_update_device(dev);
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
|
|
return sprintf(buf, "%d\n", data->pwmchan[sattr->index]);
|
|
}
|
|
|
|
static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct adt7475_data *data = adt7475_update_device(dev);
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
|
|
return sprintf(buf, "%d\n", data->pwmctl[sattr->index]);
|
|
}
|
|
|
|
static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
unsigned char reg = 0;
|
|
long val;
|
|
|
|
if (strict_strtol(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
switch (sattr->nr) {
|
|
case INPUT:
|
|
/* Get a fresh value for CONTROL */
|
|
data->pwm[CONTROL][sattr->index] =
|
|
adt7475_read(PWM_CONFIG_REG(sattr->index));
|
|
|
|
/* If we are not in manual mode, then we shouldn't allow
|
|
* the user to set the pwm speed */
|
|
if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) {
|
|
mutex_unlock(&data->lock);
|
|
return count;
|
|
}
|
|
|
|
reg = PWM_REG(sattr->index);
|
|
break;
|
|
|
|
case MIN:
|
|
reg = PWM_MIN_REG(sattr->index);
|
|
break;
|
|
|
|
case MAX:
|
|
reg = PWM_MAX_REG(sattr->index);
|
|
break;
|
|
}
|
|
|
|
data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF);
|
|
i2c_smbus_write_byte_data(client, reg,
|
|
data->pwm[sattr->nr][sattr->index]);
|
|
|
|
mutex_unlock(&data->lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
/* Called by set_pwmctrl and set_pwmchan */
|
|
|
|
static int hw_set_pwm(struct i2c_client *client, int index,
|
|
unsigned int pwmctl, unsigned int pwmchan)
|
|
{
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
long val = 0;
|
|
|
|
switch (pwmctl) {
|
|
case 0:
|
|
val = 0x03; /* Run at full speed */
|
|
break;
|
|
case 1:
|
|
val = 0x07; /* Manual mode */
|
|
break;
|
|
case 2:
|
|
switch (pwmchan) {
|
|
case 1:
|
|
/* Remote1 controls PWM */
|
|
val = 0x00;
|
|
break;
|
|
case 2:
|
|
/* local controls PWM */
|
|
val = 0x01;
|
|
break;
|
|
case 4:
|
|
/* remote2 controls PWM */
|
|
val = 0x02;
|
|
break;
|
|
case 6:
|
|
/* local/remote2 control PWM */
|
|
val = 0x05;
|
|
break;
|
|
case 7:
|
|
/* All three control PWM */
|
|
val = 0x06;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
data->pwmctl[index] = pwmctl;
|
|
data->pwmchan[index] = pwmchan;
|
|
|
|
data->pwm[CONTROL][index] &= ~0xE0;
|
|
data->pwm[CONTROL][index] |= (val & 7) << 5;
|
|
|
|
i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
|
|
data->pwm[CONTROL][index]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
int r;
|
|
long val;
|
|
|
|
if (strict_strtol(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->lock);
|
|
/* Read Modify Write PWM values */
|
|
adt7475_read_pwm(client, sattr->index);
|
|
r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val);
|
|
if (r)
|
|
count = r;
|
|
mutex_unlock(&data->lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
int r;
|
|
long val;
|
|
|
|
if (strict_strtol(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->lock);
|
|
/* Read Modify Write PWM values */
|
|
adt7475_read_pwm(client, sattr->index);
|
|
r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]);
|
|
if (r)
|
|
count = r;
|
|
mutex_unlock(&data->lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
/* List of frequencies for the PWM */
|
|
static const int pwmfreq_table[] = {
|
|
11, 14, 22, 29, 35, 44, 58, 88
|
|
};
|
|
|
|
static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct adt7475_data *data = adt7475_update_device(dev);
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
|
|
return sprintf(buf, "%d\n",
|
|
pwmfreq_table[data->range[sattr->index] & 7]);
|
|
}
|
|
|
|
static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
int out;
|
|
long val;
|
|
|
|
if (strict_strtol(buf, 10, &val))
|
|
return -EINVAL;
|
|
|
|
out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table));
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
data->range[sattr->index] =
|
|
adt7475_read(TEMP_TRANGE_REG(sattr->index));
|
|
data->range[sattr->index] &= ~7;
|
|
data->range[sattr->index] |= out;
|
|
|
|
i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
|
|
data->range[sattr->index]);
|
|
|
|
mutex_unlock(&data->lock);
|
|
return count;
|
|
}
|
|
|
|
static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
|
|
static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
|
|
set_voltage, MAX, 0);
|
|
static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
|
|
set_voltage, MIN, 0);
|
|
static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
|
|
static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
|
|
static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,
|
|
set_voltage, MAX, 1);
|
|
static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage,
|
|
set_voltage, MIN, 1);
|
|
static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
|
|
MAX, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
|
|
MIN, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
|
|
set_temp, OFFSET, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR,
|
|
show_temp, set_temp, AUTOMIN, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR,
|
|
show_point2, set_point2, 0, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
|
|
THERM, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
|
|
set_temp, HYSTERSIS, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
|
|
MAX, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
|
|
MIN, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
|
|
set_temp, OFFSET, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR,
|
|
show_temp, set_temp, AUTOMIN, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR,
|
|
show_point2, set_point2, 0, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
|
|
THERM, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
|
|
set_temp, HYSTERSIS, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
|
|
MAX, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
|
|
MIN, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
|
|
set_temp, OFFSET, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR,
|
|
show_temp, set_temp, AUTOMIN, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR,
|
|
show_point2, set_point2, 0, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp,
|
|
THERM, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp,
|
|
set_temp, HYSTERSIS, 2);
|
|
static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0);
|
|
static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
|
|
MIN, 0);
|
|
static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0);
|
|
static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1);
|
|
static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
|
|
MIN, 1);
|
|
static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1);
|
|
static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2);
|
|
static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
|
|
MIN, 2);
|
|
static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2);
|
|
static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3);
|
|
static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach,
|
|
MIN, 3);
|
|
static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
|
|
0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
|
|
set_pwmfreq, INPUT, 0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
|
|
set_pwmctrl, INPUT, 0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_auto_channel_temp, S_IRUGO | S_IWUSR,
|
|
show_pwmchan, set_pwmchan, INPUT, 0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
|
|
set_pwm, MIN, 0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
|
|
set_pwm, MAX, 0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
|
|
1);
|
|
static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
|
|
set_pwmfreq, INPUT, 1);
|
|
static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
|
|
set_pwmctrl, INPUT, 1);
|
|
static SENSOR_DEVICE_ATTR_2(pwm2_auto_channel_temp, S_IRUGO | S_IWUSR,
|
|
show_pwmchan, set_pwmchan, INPUT, 1);
|
|
static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
|
|
set_pwm, MIN, 1);
|
|
static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
|
|
set_pwm, MAX, 1);
|
|
static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT,
|
|
2);
|
|
static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq,
|
|
set_pwmfreq, INPUT, 2);
|
|
static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl,
|
|
set_pwmctrl, INPUT, 2);
|
|
static SENSOR_DEVICE_ATTR_2(pwm3_auto_channel_temp, S_IRUGO | S_IWUSR,
|
|
show_pwmchan, set_pwmchan, INPUT, 2);
|
|
static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
|
|
set_pwm, MIN, 2);
|
|
static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
|
|
set_pwm, MAX, 2);
|
|
|
|
static struct attribute *adt7475_attrs[] = {
|
|
&sensor_dev_attr_in1_input.dev_attr.attr,
|
|
&sensor_dev_attr_in1_max.dev_attr.attr,
|
|
&sensor_dev_attr_in1_min.dev_attr.attr,
|
|
&sensor_dev_attr_in1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in2_input.dev_attr.attr,
|
|
&sensor_dev_attr_in2_max.dev_attr.attr,
|
|
&sensor_dev_attr_in2_min.dev_attr.attr,
|
|
&sensor_dev_attr_in2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_offset.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_offset.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_offset.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_freq.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_channel_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_freq.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_auto_channel_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_freq.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_auto_channel_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
|
|
|
|
static int adt7475_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) {
|
|
if (adt7475_read(REG_VENDID) != 0x41 ||
|
|
adt7475_read(REG_DEVID) != 0x75) {
|
|
dev_err(&adapter->dev,
|
|
"Couldn't detect a adt7475 part at 0x%02x\n",
|
|
(unsigned int)client->addr);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
strlcpy(info->type, adt7475_id[0].name, I2C_NAME_SIZE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adt7475_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct adt7475_data *data;
|
|
int i, ret = 0;
|
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
|
if (data == NULL)
|
|
return -ENOMEM;
|
|
|
|
mutex_init(&data->lock);
|
|
i2c_set_clientdata(client, data);
|
|
|
|
/* Call adt7475_read_pwm for all pwm's as this will reprogram any
|
|
pwm's which are disabled to manual mode with 0% duty cycle */
|
|
for (i = 0; i < ADT7475_PWM_COUNT; i++)
|
|
adt7475_read_pwm(client, i);
|
|
|
|
ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group);
|
|
if (ret)
|
|
goto efree;
|
|
|
|
data->hwmon_dev = hwmon_device_register(&client->dev);
|
|
if (IS_ERR(data->hwmon_dev)) {
|
|
ret = PTR_ERR(data->hwmon_dev);
|
|
goto eremove;
|
|
}
|
|
|
|
return 0;
|
|
|
|
eremove:
|
|
sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
|
|
efree:
|
|
kfree(data);
|
|
return ret;
|
|
}
|
|
|
|
static int adt7475_remove(struct i2c_client *client)
|
|
{
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
|
|
hwmon_device_unregister(data->hwmon_dev);
|
|
sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group);
|
|
kfree(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_driver adt7475_driver = {
|
|
.class = I2C_CLASS_HWMON,
|
|
.driver = {
|
|
.name = "adt7475",
|
|
},
|
|
.probe = adt7475_probe,
|
|
.remove = adt7475_remove,
|
|
.id_table = adt7475_id,
|
|
.detect = adt7475_detect,
|
|
.address_data = &addr_data,
|
|
};
|
|
|
|
static void adt7475_read_hystersis(struct i2c_client *client)
|
|
{
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
|
|
data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS);
|
|
data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0];
|
|
data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS);
|
|
}
|
|
|
|
static void adt7475_read_pwm(struct i2c_client *client, int index)
|
|
{
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
unsigned int v;
|
|
|
|
data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index));
|
|
|
|
/* Figure out the internal value for pwmctrl and pwmchan
|
|
based on the current settings */
|
|
v = (data->pwm[CONTROL][index] >> 5) & 7;
|
|
|
|
if (v == 3)
|
|
data->pwmctl[index] = 0;
|
|
else if (v == 7)
|
|
data->pwmctl[index] = 1;
|
|
else if (v == 4) {
|
|
/* The fan is disabled - we don't want to
|
|
support that, so change to manual mode and
|
|
set the duty cycle to 0 instead
|
|
*/
|
|
data->pwm[INPUT][index] = 0;
|
|
data->pwm[CONTROL][index] &= ~0xE0;
|
|
data->pwm[CONTROL][index] |= (7 << 5);
|
|
|
|
i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
|
|
data->pwm[INPUT][index]);
|
|
|
|
i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index),
|
|
data->pwm[CONTROL][index]);
|
|
|
|
data->pwmctl[index] = 1;
|
|
} else {
|
|
data->pwmctl[index] = 2;
|
|
|
|
switch (v) {
|
|
case 0:
|
|
data->pwmchan[index] = 1;
|
|
break;
|
|
case 1:
|
|
data->pwmchan[index] = 2;
|
|
break;
|
|
case 2:
|
|
data->pwmchan[index] = 4;
|
|
break;
|
|
case 5:
|
|
data->pwmchan[index] = 6;
|
|
break;
|
|
case 6:
|
|
data->pwmchan[index] = 7;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct adt7475_data *adt7475_update_device(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct adt7475_data *data = i2c_get_clientdata(client);
|
|
u8 ext;
|
|
int i;
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
/* Measurement values update every 2 seconds */
|
|
if (time_after(jiffies, data->measure_updated + HZ * 2) ||
|
|
!data->valid) {
|
|
data->alarms = adt7475_read(REG_STATUS2) << 8;
|
|
data->alarms |= adt7475_read(REG_STATUS1);
|
|
|
|
ext = adt7475_read(REG_EXTEND1);
|
|
for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++)
|
|
data->voltage[INPUT][i] =
|
|
(adt7475_read(VOLTAGE_REG(i)) << 2) |
|
|
((ext >> ((i + 1) * 2)) & 3);
|
|
|
|
ext = adt7475_read(REG_EXTEND2);
|
|
for (i = 0; i < ADT7475_TEMP_COUNT; i++)
|
|
data->temp[INPUT][i] =
|
|
(adt7475_read(TEMP_REG(i)) << 2) |
|
|
((ext >> ((i + 1) * 2)) & 3);
|
|
|
|
for (i = 0; i < ADT7475_TACH_COUNT; i++)
|
|
data->tach[INPUT][i] =
|
|
adt7475_read_word(client, TACH_REG(i));
|
|
|
|
/* Updated by hw when in auto mode */
|
|
for (i = 0; i < ADT7475_PWM_COUNT; i++)
|
|
data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
|
|
|
|
data->measure_updated = jiffies;
|
|
}
|
|
|
|
/* Limits and settings, should never change update every 60 seconds */
|
|
if (time_after(jiffies, data->limits_updated + HZ * 2) ||
|
|
!data->valid) {
|
|
data->config5 = adt7475_read(REG_CONFIG5);
|
|
|
|
for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
|
|
/* Adjust values so they match the input precision */
|
|
data->voltage[MIN][i] =
|
|
adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
|
|
data->voltage[MAX][i] =
|
|
adt7475_read(VOLTAGE_MAX_REG(i)) << 2;
|
|
}
|
|
|
|
for (i = 0; i < ADT7475_TEMP_COUNT; i++) {
|
|
/* Adjust values so they match the input precision */
|
|
data->temp[MIN][i] =
|
|
adt7475_read(TEMP_MIN_REG(i)) << 2;
|
|
data->temp[MAX][i] =
|
|
adt7475_read(TEMP_MAX_REG(i)) << 2;
|
|
data->temp[AUTOMIN][i] =
|
|
adt7475_read(TEMP_TMIN_REG(i)) << 2;
|
|
data->temp[THERM][i] =
|
|
adt7475_read(TEMP_THERM_REG(i)) << 2;
|
|
data->temp[OFFSET][i] =
|
|
adt7475_read(TEMP_OFFSET_REG(i));
|
|
}
|
|
adt7475_read_hystersis(client);
|
|
|
|
for (i = 0; i < ADT7475_TACH_COUNT; i++)
|
|
data->tach[MIN][i] =
|
|
adt7475_read_word(client, TACH_MIN_REG(i));
|
|
|
|
for (i = 0; i < ADT7475_PWM_COUNT; i++) {
|
|
data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i));
|
|
data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i));
|
|
/* Set the channel and control information */
|
|
adt7475_read_pwm(client, i);
|
|
}
|
|
|
|
data->range[0] = adt7475_read(TEMP_TRANGE_REG(0));
|
|
data->range[1] = adt7475_read(TEMP_TRANGE_REG(1));
|
|
data->range[2] = adt7475_read(TEMP_TRANGE_REG(2));
|
|
|
|
data->limits_updated = jiffies;
|
|
data->valid = 1;
|
|
}
|
|
|
|
mutex_unlock(&data->lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static int __init sensors_adt7475_init(void)
|
|
{
|
|
return i2c_add_driver(&adt7475_driver);
|
|
}
|
|
|
|
static void __exit sensors_adt7475_exit(void)
|
|
{
|
|
i2c_del_driver(&adt7475_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Advanced Micro Devices, Inc");
|
|
MODULE_DESCRIPTION("adt7475 driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sensors_adt7475_init);
|
|
module_exit(sensors_adt7475_exit);
|