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lm85.c - Part of lm_sensors, Linux kernel modules for hardware
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Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
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Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
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Copyright (c) 2003 Margit Schubert-While <margitsw@t-online.de>
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Copyright (c) 2004 Justin Thiessen <jthiessen@penguincomputing.com>
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Copyright (C) 2007--2009 Jean Delvare <khali@linux-fr.org>
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Chip details at <http://www.national.com/ds/LM/LM85.pdf>
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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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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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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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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/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-vid.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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/* Addresses to scan */
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static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
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any_chip, lm85b, lm85c,
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adm1027, adt7463, adt7468,
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emc6d100, emc6d102, emc6d103, emc6d103s
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/* The LM85 registers */
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#define LM85_REG_IN(nr) (0x20 + (nr))
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#define LM85_REG_IN_MIN(nr) (0x44 + (nr) * 2)
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#define LM85_REG_IN_MAX(nr) (0x45 + (nr) * 2)
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#define LM85_REG_TEMP(nr) (0x25 + (nr))
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#define LM85_REG_TEMP_MIN(nr) (0x4e + (nr) * 2)
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#define LM85_REG_TEMP_MAX(nr) (0x4f + (nr) * 2)
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/* Fan speeds are LSB, MSB (2 bytes) */
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#define LM85_REG_FAN(nr) (0x28 + (nr) * 2)
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#define LM85_REG_FAN_MIN(nr) (0x54 + (nr) * 2)
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#define LM85_REG_PWM(nr) (0x30 + (nr))
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#define LM85_REG_COMPANY 0x3e
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#define LM85_REG_VERSTEP 0x3f
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#define ADT7468_REG_CFG5 0x7c
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#define ADT7468_OFF64 (1 << 0)
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#define ADT7468_HFPWM (1 << 1)
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#define IS_ADT7468_OFF64(data) \
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((data)->type == adt7468 && !((data)->cfg5 & ADT7468_OFF64))
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#define IS_ADT7468_HFPWM(data) \
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((data)->type == adt7468 && !((data)->cfg5 & ADT7468_HFPWM))
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/* These are the recognized values for the above regs */
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#define LM85_COMPANY_NATIONAL 0x01
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#define LM85_COMPANY_ANALOG_DEV 0x41
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#define LM85_COMPANY_SMSC 0x5c
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#define LM85_VERSTEP_VMASK 0xf0
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#define LM85_VERSTEP_GENERIC 0x60
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#define LM85_VERSTEP_GENERIC2 0x70
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#define LM85_VERSTEP_LM85C 0x60
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#define LM85_VERSTEP_LM85B 0x62
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#define LM85_VERSTEP_LM96000_1 0x68
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#define LM85_VERSTEP_LM96000_2 0x69
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#define LM85_VERSTEP_ADM1027 0x60
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#define LM85_VERSTEP_ADT7463 0x62
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#define LM85_VERSTEP_ADT7463C 0x6A
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#define LM85_VERSTEP_ADT7468_1 0x71
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#define LM85_VERSTEP_ADT7468_2 0x72
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#define LM85_VERSTEP_EMC6D100_A0 0x60
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#define LM85_VERSTEP_EMC6D100_A1 0x61
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#define LM85_VERSTEP_EMC6D102 0x65
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#define LM85_VERSTEP_EMC6D103_A0 0x68
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#define LM85_VERSTEP_EMC6D103_A1 0x69
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#define LM85_VERSTEP_EMC6D103S 0x6A /* Also known as EMC6D103:A2 */
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#define LM85_REG_CONFIG 0x40
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#define LM85_REG_ALARM1 0x41
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#define LM85_REG_ALARM2 0x42
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#define LM85_REG_VID 0x43
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/* Automated FAN control */
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#define LM85_REG_AFAN_CONFIG(nr) (0x5c + (nr))
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#define LM85_REG_AFAN_RANGE(nr) (0x5f + (nr))
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#define LM85_REG_AFAN_SPIKE1 0x62
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#define LM85_REG_AFAN_MINPWM(nr) (0x64 + (nr))
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#define LM85_REG_AFAN_LIMIT(nr) (0x67 + (nr))
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#define LM85_REG_AFAN_CRITICAL(nr) (0x6a + (nr))
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#define LM85_REG_AFAN_HYST1 0x6d
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#define LM85_REG_AFAN_HYST2 0x6e
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#define ADM1027_REG_EXTEND_ADC1 0x76
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#define ADM1027_REG_EXTEND_ADC2 0x77
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#define EMC6D100_REG_ALARM3 0x7d
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/* IN5, IN6 and IN7 */
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#define EMC6D100_REG_IN(nr) (0x70 + ((nr) - 5))
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#define EMC6D100_REG_IN_MIN(nr) (0x73 + ((nr) - 5) * 2)
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#define EMC6D100_REG_IN_MAX(nr) (0x74 + ((nr) - 5) * 2)
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#define EMC6D102_REG_EXTEND_ADC1 0x85
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#define EMC6D102_REG_EXTEND_ADC2 0x86
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#define EMC6D102_REG_EXTEND_ADC3 0x87
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#define EMC6D102_REG_EXTEND_ADC4 0x88
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/* Conversions. Rounding and limit checking is only done on the TO_REG
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variants. Note that you should be a bit careful with which arguments
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these macros are called: arguments may be evaluated more than once.
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/* IN are scaled according to built-in resistors */
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static const int lm85_scaling[] = { /* .001 Volts */
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2500, 2250, 3300, 5000, 12000,
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3300, 1500, 1800 /*EMC6D100*/
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#define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
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#define INS_TO_REG(n, val) \
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SENSORS_LIMIT(SCALE(val, lm85_scaling[n], 192), 0, 255)
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#define INSEXT_FROM_REG(n, val, ext) \
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SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
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#define INS_FROM_REG(n, val) SCALE((val), 192, lm85_scaling[n])
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/* FAN speed is measured using 90kHz clock */
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static inline u16 FAN_TO_REG(unsigned long val)
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return SENSORS_LIMIT(5400000 / val, 1, 0xfffe);
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#define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
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/* Temperature is reported in .001 degC increments */
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#define TEMP_TO_REG(val) \
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SENSORS_LIMIT(SCALE(val, 1000, 1), -127, 127)
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#define TEMPEXT_FROM_REG(val, ext) \
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SCALE(((val) << 4) + (ext), 16, 1000)
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#define TEMP_FROM_REG(val) ((val) * 1000)
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#define PWM_TO_REG(val) SENSORS_LIMIT(val, 0, 255)
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#define PWM_FROM_REG(val) (val)
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/* ZONEs have the following parameters:
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* Limit (low) temp, 1. degC
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* Hysteresis (below limit), 1. degC (0-15)
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* Range of speed control, .1 degC (2-80)
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* Critical (high) temp, 1. degC
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* FAN PWMs have the following parameters:
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* Reference Zone, 1, 2, 3, etc.
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* Spinup time, .05 sec
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* PWM value at limit/low temp, 1 count
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* PWM Frequency, 1. Hz
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* PWM is Min or OFF below limit, flag
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* Invert PWM output, flag
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* Some chips filter the temp, others the fan.
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* Filter constant (or disabled) .1 seconds
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/* These are the zone temperature range encodings in .001 degree C */
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static const int lm85_range_map[] = {
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2000, 2500, 3300, 4000, 5000, 6600, 8000, 10000,
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13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
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static int RANGE_TO_REG(int range)
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/* Find the closest match */
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for (i = 0; i < 15; ++i) {
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if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
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#define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]
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/* These are the PWM frequency encodings */
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static const int lm85_freq_map[8] = { /* 1 Hz */
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10, 15, 23, 30, 38, 47, 61, 94
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static const int adm1027_freq_map[8] = { /* 1 Hz */
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11, 15, 22, 29, 35, 44, 59, 88
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static int FREQ_TO_REG(const int *map, int freq)
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/* Find the closest match */
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for (i = 0; i < 7; ++i)
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if (freq <= (map[i] + map[i + 1]) / 2)
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static int FREQ_FROM_REG(const int *map, u8 reg)
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return map[reg & 0x07];
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/* Since we can't use strings, I'm abusing these numbers
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* to stand in for the following meanings:
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* 1 -- PWM responds to Zone 1
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* 2 -- PWM responds to Zone 2
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* 3 -- PWM responds to Zone 3
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* 23 -- PWM responds to the higher temp of Zone 2 or 3
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* 123 -- PWM responds to highest of Zone 1, 2, or 3
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* 0 -- PWM is always at 0% (ie, off)
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* -1 -- PWM is always at 100%
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* -2 -- PWM responds to manual control
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static const int lm85_zone_map[] = { 1, 2, 3, -1, 0, 23, 123, -2 };
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#define ZONE_FROM_REG(val) lm85_zone_map[(val) >> 5]
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static int ZONE_TO_REG(int zone)
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for (i = 0; i <= 7; ++i)
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if (zone == lm85_zone_map[i])
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if (i > 7) /* Not found. */
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i = 3; /* Always 100% */
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#define HYST_TO_REG(val) SENSORS_LIMIT(((val) + 500) / 1000, 0, 15)
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#define HYST_FROM_REG(val) ((val) * 1000)
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/* Chip sampling rates
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* Some sensors are not updated more frequently than once per second
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* so it doesn't make sense to read them more often than that.
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* We cache the results and return the saved data if the driver
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* is called again before a second has elapsed.
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* Also, there is significant configuration data for this chip
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* given the automatic PWM fan control that is possible. There
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* are about 47 bytes of config data to only 22 bytes of actual
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* readings. So, we keep the config data up to date in the cache
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* when it is written and only sample it once every 1 *minute*
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#define LM85_DATA_INTERVAL (HZ + HZ / 2)
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#define LM85_CONFIG_INTERVAL (1 * 60 * HZ)
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/* LM85 can automatically adjust fan speeds based on temperature
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* This structure encapsulates an entire Zone config. There are
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* three zones (one for each temperature input) on the lm85
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s8 limit; /* Low temp limit */
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u8 hyst; /* Low limit hysteresis. (0-15) */
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u8 range; /* Temp range, encoded */
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s8 critical; /* "All fans ON" temp limit */
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u8 max_desired; /* Actual "max" temperature specified. Preserved
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* to prevent "drift" as other autofan control
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struct lm85_autofan {
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u8 config; /* Register value */
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u8 min_pwm; /* Minimum PWM value, encoded */
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u8 min_off; /* Min PWM or OFF below "limit", flag */
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/* For each registered chip, we need to keep some data in memory.
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The structure is dynamically allocated. */
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struct device *hwmon_dev;
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bool has_vid5; /* true if VID5 is configured for ADT7463 or ADT7468 */
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struct mutex update_lock;
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int valid; /* !=0 if following fields are valid */
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unsigned long last_reading; /* In jiffies */
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unsigned long last_config; /* In jiffies */
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u8 in[8]; /* Register value */
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u8 in_max[8]; /* Register value */
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u8 in_min[8]; /* Register value */
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s8 temp[3]; /* Register value */
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s8 temp_min[3]; /* Register value */
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s8 temp_max[3]; /* Register value */
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u16 fan[4]; /* Register value */
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u16 fan_min[4]; /* Register value */
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u8 pwm[3]; /* Register value */
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u8 pwm_freq[3]; /* Register encoding */
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u8 temp_ext[3]; /* Decoded values */
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u8 in_ext[8]; /* Decoded values */
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u8 vid; /* Register value */
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u8 vrm; /* VRM version */
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u32 alarms; /* Register encoding, combined */
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u8 cfg5; /* Config Register 5 on ADT7468 */
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struct lm85_autofan autofan[3];
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struct lm85_zone zone[3];
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static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info);
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static int lm85_probe(struct i2c_client *client,
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const struct i2c_device_id *id);
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static int lm85_remove(struct i2c_client *client);
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static int lm85_read_value(struct i2c_client *client, u8 reg);
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static void lm85_write_value(struct i2c_client *client, u8 reg, int value);
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static struct lm85_data *lm85_update_device(struct device *dev);
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static const struct i2c_device_id lm85_id[] = {
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{ "adm1027", adm1027 },
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{ "adt7463", adt7463 },
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{ "adt7468", adt7468 },
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{ "lm85", any_chip },
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{ "emc6d100", emc6d100 },
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{ "emc6d101", emc6d100 },
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{ "emc6d102", emc6d102 },
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{ "emc6d103", emc6d103 },
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{ "emc6d103s", emc6d103s },
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MODULE_DEVICE_TABLE(i2c, lm85_id);
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static struct i2c_driver lm85_driver = {
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.class = I2C_CLASS_HWMON,
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.remove = lm85_remove,
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.detect = lm85_detect,
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.address_list = normal_i2c,
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static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
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int nr = to_sensor_dev_attr(attr)->index;
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struct lm85_data *data = lm85_update_device(dev);
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
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static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
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int nr = to_sensor_dev_attr(attr)->index;
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struct lm85_data *data = lm85_update_device(dev);
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
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static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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int nr = to_sensor_dev_attr(attr)->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct lm85_data *data = i2c_get_clientdata(client);
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unsigned long val = simple_strtoul(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->fan_min[nr] = FAN_TO_REG(val);
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lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
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mutex_unlock(&data->update_lock);
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#define show_fan_offset(offset) \
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static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
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show_fan, NULL, offset - 1); \
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static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
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show_fan_min, set_fan_min, offset - 1)
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/* vid, vrm, alarms */
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static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
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struct lm85_data *data = lm85_update_device(dev);
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if (data->has_vid5) {
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/* 6-pin VID (VRM 10) */
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vid = vid_from_reg(data->vid & 0x3f, data->vrm);
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/* 5-pin VID (VRM 9) */
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vid = vid_from_reg(data->vid & 0x1f, data->vrm);
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return sprintf(buf, "%d\n", vid);
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static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
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static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
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struct lm85_data *data = dev_get_drvdata(dev);
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return sprintf(buf, "%ld\n", (long) data->vrm);
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static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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struct lm85_data *data = dev_get_drvdata(dev);
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data->vrm = simple_strtoul(buf, NULL, 10);
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static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
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static ssize_t show_alarms_reg(struct device *dev, struct device_attribute
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struct lm85_data *data = lm85_update_device(dev);
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return sprintf(buf, "%u\n", data->alarms);
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static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
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static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
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int nr = to_sensor_dev_attr(attr)->index;
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struct lm85_data *data = lm85_update_device(dev);
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return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
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static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
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static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
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static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
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static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
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static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
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static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
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static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
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static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
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static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
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static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
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static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
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static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
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static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
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static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
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static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
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static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
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static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
489
static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
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int nr = to_sensor_dev_attr(attr)->index;
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struct lm85_data *data = lm85_update_device(dev);
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return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
497
static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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int nr = to_sensor_dev_attr(attr)->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct lm85_data *data = i2c_get_clientdata(client);
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long val = simple_strtol(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->pwm[nr] = PWM_TO_REG(val);
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lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
508
mutex_unlock(&data->update_lock);
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static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
515
int nr = to_sensor_dev_attr(attr)->index;
516
struct lm85_data *data = lm85_update_device(dev);
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int pwm_zone, enable;
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pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
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case -1: /* PWM is always at 100% */
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case 0: /* PWM is always at 0% */
525
case -2: /* PWM responds to manual control */
528
default: /* PWM in automatic mode */
531
return sprintf(buf, "%d\n", enable);
534
static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
535
*attr, const char *buf, size_t count)
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int nr = to_sensor_dev_attr(attr)->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct lm85_data *data = i2c_get_clientdata(client);
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long val = simple_strtol(buf, NULL, 10);
551
/* Here we have to choose arbitrarily one of the 5 possible
552
configurations; I go for the safest */
559
mutex_lock(&data->update_lock);
560
data->autofan[nr].config = lm85_read_value(client,
561
LM85_REG_AFAN_CONFIG(nr));
562
data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
564
lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
565
data->autofan[nr].config);
566
mutex_unlock(&data->update_lock);
570
static ssize_t show_pwm_freq(struct device *dev,
571
struct device_attribute *attr, char *buf)
573
int nr = to_sensor_dev_attr(attr)->index;
574
struct lm85_data *data = lm85_update_device(dev);
577
if (IS_ADT7468_HFPWM(data))
580
freq = FREQ_FROM_REG(data->freq_map, data->pwm_freq[nr]);
582
return sprintf(buf, "%d\n", freq);
585
static ssize_t set_pwm_freq(struct device *dev,
586
struct device_attribute *attr, const char *buf, size_t count)
588
int nr = to_sensor_dev_attr(attr)->index;
589
struct i2c_client *client = to_i2c_client(dev);
590
struct lm85_data *data = i2c_get_clientdata(client);
591
long val = simple_strtol(buf, NULL, 10);
593
mutex_lock(&data->update_lock);
594
/* The ADT7468 has a special high-frequency PWM output mode,
595
* where all PWM outputs are driven by a 22.5 kHz clock.
596
* This might confuse the user, but there's not much we can do. */
597
if (data->type == adt7468 && val >= 11300) { /* High freq. mode */
598
data->cfg5 &= ~ADT7468_HFPWM;
599
lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
600
} else { /* Low freq. mode */
601
data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map, val);
602
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
603
(data->zone[nr].range << 4)
604
| data->pwm_freq[nr]);
605
if (data->type == adt7468) {
606
data->cfg5 |= ADT7468_HFPWM;
607
lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
610
mutex_unlock(&data->update_lock);
614
#define show_pwm_reg(offset) \
615
static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
616
show_pwm, set_pwm, offset - 1); \
617
static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
618
show_pwm_enable, set_pwm_enable, offset - 1); \
619
static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
620
show_pwm_freq, set_pwm_freq, offset - 1)
628
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
631
int nr = to_sensor_dev_attr(attr)->index;
632
struct lm85_data *data = lm85_update_device(dev);
633
return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
637
static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
640
int nr = to_sensor_dev_attr(attr)->index;
641
struct lm85_data *data = lm85_update_device(dev);
642
return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
645
static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
646
const char *buf, size_t count)
648
int nr = to_sensor_dev_attr(attr)->index;
649
struct i2c_client *client = to_i2c_client(dev);
650
struct lm85_data *data = i2c_get_clientdata(client);
651
long val = simple_strtol(buf, NULL, 10);
653
mutex_lock(&data->update_lock);
654
data->in_min[nr] = INS_TO_REG(nr, val);
655
lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
656
mutex_unlock(&data->update_lock);
660
static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
663
int nr = to_sensor_dev_attr(attr)->index;
664
struct lm85_data *data = lm85_update_device(dev);
665
return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
668
static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
669
const char *buf, size_t count)
671
int nr = to_sensor_dev_attr(attr)->index;
672
struct i2c_client *client = to_i2c_client(dev);
673
struct lm85_data *data = i2c_get_clientdata(client);
674
long val = simple_strtol(buf, NULL, 10);
676
mutex_lock(&data->update_lock);
677
data->in_max[nr] = INS_TO_REG(nr, val);
678
lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
679
mutex_unlock(&data->update_lock);
683
#define show_in_reg(offset) \
684
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
685
show_in, NULL, offset); \
686
static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
687
show_in_min, set_in_min, offset); \
688
static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
689
show_in_max, set_in_max, offset)
702
static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
705
int nr = to_sensor_dev_attr(attr)->index;
706
struct lm85_data *data = lm85_update_device(dev);
707
return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
708
data->temp_ext[nr]));
711
static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
714
int nr = to_sensor_dev_attr(attr)->index;
715
struct lm85_data *data = lm85_update_device(dev);
716
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
719
static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
720
const char *buf, size_t count)
722
int nr = to_sensor_dev_attr(attr)->index;
723
struct i2c_client *client = to_i2c_client(dev);
724
struct lm85_data *data = i2c_get_clientdata(client);
725
long val = simple_strtol(buf, NULL, 10);
727
if (IS_ADT7468_OFF64(data))
730
mutex_lock(&data->update_lock);
731
data->temp_min[nr] = TEMP_TO_REG(val);
732
lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
733
mutex_unlock(&data->update_lock);
737
static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
740
int nr = to_sensor_dev_attr(attr)->index;
741
struct lm85_data *data = lm85_update_device(dev);
742
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
745
static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
746
const char *buf, size_t count)
748
int nr = to_sensor_dev_attr(attr)->index;
749
struct i2c_client *client = to_i2c_client(dev);
750
struct lm85_data *data = i2c_get_clientdata(client);
751
long val = simple_strtol(buf, NULL, 10);
753
if (IS_ADT7468_OFF64(data))
756
mutex_lock(&data->update_lock);
757
data->temp_max[nr] = TEMP_TO_REG(val);
758
lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
759
mutex_unlock(&data->update_lock);
763
#define show_temp_reg(offset) \
764
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
765
show_temp, NULL, offset - 1); \
766
static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
767
show_temp_min, set_temp_min, offset - 1); \
768
static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
769
show_temp_max, set_temp_max, offset - 1);
776
/* Automatic PWM control */
778
static ssize_t show_pwm_auto_channels(struct device *dev,
779
struct device_attribute *attr, char *buf)
781
int nr = to_sensor_dev_attr(attr)->index;
782
struct lm85_data *data = lm85_update_device(dev);
783
return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
786
static ssize_t set_pwm_auto_channels(struct device *dev,
787
struct device_attribute *attr, const char *buf, size_t count)
789
int nr = to_sensor_dev_attr(attr)->index;
790
struct i2c_client *client = to_i2c_client(dev);
791
struct lm85_data *data = i2c_get_clientdata(client);
792
long val = simple_strtol(buf, NULL, 10);
794
mutex_lock(&data->update_lock);
795
data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
797
lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
798
data->autofan[nr].config);
799
mutex_unlock(&data->update_lock);
803
static ssize_t show_pwm_auto_pwm_min(struct device *dev,
804
struct device_attribute *attr, char *buf)
806
int nr = to_sensor_dev_attr(attr)->index;
807
struct lm85_data *data = lm85_update_device(dev);
808
return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
811
static ssize_t set_pwm_auto_pwm_min(struct device *dev,
812
struct device_attribute *attr, const char *buf, size_t count)
814
int nr = to_sensor_dev_attr(attr)->index;
815
struct i2c_client *client = to_i2c_client(dev);
816
struct lm85_data *data = i2c_get_clientdata(client);
817
long val = simple_strtol(buf, NULL, 10);
819
mutex_lock(&data->update_lock);
820
data->autofan[nr].min_pwm = PWM_TO_REG(val);
821
lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
822
data->autofan[nr].min_pwm);
823
mutex_unlock(&data->update_lock);
827
static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
828
struct device_attribute *attr, char *buf)
830
int nr = to_sensor_dev_attr(attr)->index;
831
struct lm85_data *data = lm85_update_device(dev);
832
return sprintf(buf, "%d\n", data->autofan[nr].min_off);
835
static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
836
struct device_attribute *attr, const char *buf, size_t count)
838
int nr = to_sensor_dev_attr(attr)->index;
839
struct i2c_client *client = to_i2c_client(dev);
840
struct lm85_data *data = i2c_get_clientdata(client);
841
long val = simple_strtol(buf, NULL, 10);
844
mutex_lock(&data->update_lock);
845
data->autofan[nr].min_off = val;
846
tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
847
tmp &= ~(0x20 << nr);
848
if (data->autofan[nr].min_off)
850
lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
851
mutex_unlock(&data->update_lock);
855
#define pwm_auto(offset) \
856
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
857
S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
858
set_pwm_auto_channels, offset - 1); \
859
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
860
S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
861
set_pwm_auto_pwm_min, offset - 1); \
862
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
863
S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
864
set_pwm_auto_pwm_minctl, offset - 1)
870
/* Temperature settings for automatic PWM control */
872
static ssize_t show_temp_auto_temp_off(struct device *dev,
873
struct device_attribute *attr, char *buf)
875
int nr = to_sensor_dev_attr(attr)->index;
876
struct lm85_data *data = lm85_update_device(dev);
877
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
878
HYST_FROM_REG(data->zone[nr].hyst));
881
static ssize_t set_temp_auto_temp_off(struct device *dev,
882
struct device_attribute *attr, const char *buf, size_t count)
884
int nr = to_sensor_dev_attr(attr)->index;
885
struct i2c_client *client = to_i2c_client(dev);
886
struct lm85_data *data = i2c_get_clientdata(client);
888
long val = simple_strtol(buf, NULL, 10);
890
mutex_lock(&data->update_lock);
891
min = TEMP_FROM_REG(data->zone[nr].limit);
892
data->zone[nr].hyst = HYST_TO_REG(min - val);
893
if (nr == 0 || nr == 1) {
894
lm85_write_value(client, LM85_REG_AFAN_HYST1,
895
(data->zone[0].hyst << 4)
896
| data->zone[1].hyst);
898
lm85_write_value(client, LM85_REG_AFAN_HYST2,
899
(data->zone[2].hyst << 4));
901
mutex_unlock(&data->update_lock);
905
static ssize_t show_temp_auto_temp_min(struct device *dev,
906
struct device_attribute *attr, char *buf)
908
int nr = to_sensor_dev_attr(attr)->index;
909
struct lm85_data *data = lm85_update_device(dev);
910
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
913
static ssize_t set_temp_auto_temp_min(struct device *dev,
914
struct device_attribute *attr, const char *buf, size_t count)
916
int nr = to_sensor_dev_attr(attr)->index;
917
struct i2c_client *client = to_i2c_client(dev);
918
struct lm85_data *data = i2c_get_clientdata(client);
919
long val = simple_strtol(buf, NULL, 10);
921
mutex_lock(&data->update_lock);
922
data->zone[nr].limit = TEMP_TO_REG(val);
923
lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
924
data->zone[nr].limit);
926
/* Update temp_auto_max and temp_auto_range */
927
data->zone[nr].range = RANGE_TO_REG(
928
TEMP_FROM_REG(data->zone[nr].max_desired) -
929
TEMP_FROM_REG(data->zone[nr].limit));
930
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
931
((data->zone[nr].range & 0x0f) << 4)
932
| (data->pwm_freq[nr] & 0x07));
934
mutex_unlock(&data->update_lock);
938
static ssize_t show_temp_auto_temp_max(struct device *dev,
939
struct device_attribute *attr, char *buf)
941
int nr = to_sensor_dev_attr(attr)->index;
942
struct lm85_data *data = lm85_update_device(dev);
943
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
944
RANGE_FROM_REG(data->zone[nr].range));
947
static ssize_t set_temp_auto_temp_max(struct device *dev,
948
struct device_attribute *attr, const char *buf, size_t count)
950
int nr = to_sensor_dev_attr(attr)->index;
951
struct i2c_client *client = to_i2c_client(dev);
952
struct lm85_data *data = i2c_get_clientdata(client);
954
long val = simple_strtol(buf, NULL, 10);
956
mutex_lock(&data->update_lock);
957
min = TEMP_FROM_REG(data->zone[nr].limit);
958
data->zone[nr].max_desired = TEMP_TO_REG(val);
959
data->zone[nr].range = RANGE_TO_REG(
961
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
962
((data->zone[nr].range & 0x0f) << 4)
963
| (data->pwm_freq[nr] & 0x07));
964
mutex_unlock(&data->update_lock);
968
static ssize_t show_temp_auto_temp_crit(struct device *dev,
969
struct device_attribute *attr, char *buf)
971
int nr = to_sensor_dev_attr(attr)->index;
972
struct lm85_data *data = lm85_update_device(dev);
973
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
976
static ssize_t set_temp_auto_temp_crit(struct device *dev,
977
struct device_attribute *attr, const char *buf, size_t count)
979
int nr = to_sensor_dev_attr(attr)->index;
980
struct i2c_client *client = to_i2c_client(dev);
981
struct lm85_data *data = i2c_get_clientdata(client);
982
long val = simple_strtol(buf, NULL, 10);
984
mutex_lock(&data->update_lock);
985
data->zone[nr].critical = TEMP_TO_REG(val);
986
lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
987
data->zone[nr].critical);
988
mutex_unlock(&data->update_lock);
992
#define temp_auto(offset) \
993
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
994
S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
995
set_temp_auto_temp_off, offset - 1); \
996
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
997
S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
998
set_temp_auto_temp_min, offset - 1); \
999
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
1000
S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
1001
set_temp_auto_temp_max, offset - 1); \
1002
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
1003
S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
1004
set_temp_auto_temp_crit, offset - 1);
1010
static struct attribute *lm85_attributes[] = {
1011
&sensor_dev_attr_fan1_input.dev_attr.attr,
1012
&sensor_dev_attr_fan2_input.dev_attr.attr,
1013
&sensor_dev_attr_fan3_input.dev_attr.attr,
1014
&sensor_dev_attr_fan4_input.dev_attr.attr,
1015
&sensor_dev_attr_fan1_min.dev_attr.attr,
1016
&sensor_dev_attr_fan2_min.dev_attr.attr,
1017
&sensor_dev_attr_fan3_min.dev_attr.attr,
1018
&sensor_dev_attr_fan4_min.dev_attr.attr,
1019
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
1020
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
1021
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
1022
&sensor_dev_attr_fan4_alarm.dev_attr.attr,
1024
&sensor_dev_attr_pwm1.dev_attr.attr,
1025
&sensor_dev_attr_pwm2.dev_attr.attr,
1026
&sensor_dev_attr_pwm3.dev_attr.attr,
1027
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
1028
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
1029
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
1030
&sensor_dev_attr_pwm1_freq.dev_attr.attr,
1031
&sensor_dev_attr_pwm2_freq.dev_attr.attr,
1032
&sensor_dev_attr_pwm3_freq.dev_attr.attr,
1034
&sensor_dev_attr_in0_input.dev_attr.attr,
1035
&sensor_dev_attr_in1_input.dev_attr.attr,
1036
&sensor_dev_attr_in2_input.dev_attr.attr,
1037
&sensor_dev_attr_in3_input.dev_attr.attr,
1038
&sensor_dev_attr_in0_min.dev_attr.attr,
1039
&sensor_dev_attr_in1_min.dev_attr.attr,
1040
&sensor_dev_attr_in2_min.dev_attr.attr,
1041
&sensor_dev_attr_in3_min.dev_attr.attr,
1042
&sensor_dev_attr_in0_max.dev_attr.attr,
1043
&sensor_dev_attr_in1_max.dev_attr.attr,
1044
&sensor_dev_attr_in2_max.dev_attr.attr,
1045
&sensor_dev_attr_in3_max.dev_attr.attr,
1046
&sensor_dev_attr_in0_alarm.dev_attr.attr,
1047
&sensor_dev_attr_in1_alarm.dev_attr.attr,
1048
&sensor_dev_attr_in2_alarm.dev_attr.attr,
1049
&sensor_dev_attr_in3_alarm.dev_attr.attr,
1051
&sensor_dev_attr_temp1_input.dev_attr.attr,
1052
&sensor_dev_attr_temp2_input.dev_attr.attr,
1053
&sensor_dev_attr_temp3_input.dev_attr.attr,
1054
&sensor_dev_attr_temp1_min.dev_attr.attr,
1055
&sensor_dev_attr_temp2_min.dev_attr.attr,
1056
&sensor_dev_attr_temp3_min.dev_attr.attr,
1057
&sensor_dev_attr_temp1_max.dev_attr.attr,
1058
&sensor_dev_attr_temp2_max.dev_attr.attr,
1059
&sensor_dev_attr_temp3_max.dev_attr.attr,
1060
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
1061
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
1062
&sensor_dev_attr_temp3_alarm.dev_attr.attr,
1063
&sensor_dev_attr_temp1_fault.dev_attr.attr,
1064
&sensor_dev_attr_temp3_fault.dev_attr.attr,
1066
&sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
1067
&sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
1068
&sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
1069
&sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
1070
&sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
1071
&sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
1073
&sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
1074
&sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
1075
&sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
1076
&sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
1077
&sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
1078
&sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
1079
&sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
1080
&sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
1081
&sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
1084
&dev_attr_cpu0_vid.attr,
1085
&dev_attr_alarms.attr,
1089
static const struct attribute_group lm85_group = {
1090
.attrs = lm85_attributes,
1093
static struct attribute *lm85_attributes_minctl[] = {
1094
&sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
1095
&sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
1096
&sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
1100
static const struct attribute_group lm85_group_minctl = {
1101
.attrs = lm85_attributes_minctl,
1104
static struct attribute *lm85_attributes_temp_off[] = {
1105
&sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
1106
&sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
1107
&sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
1111
static const struct attribute_group lm85_group_temp_off = {
1112
.attrs = lm85_attributes_temp_off,
1115
static struct attribute *lm85_attributes_in4[] = {
1116
&sensor_dev_attr_in4_input.dev_attr.attr,
1117
&sensor_dev_attr_in4_min.dev_attr.attr,
1118
&sensor_dev_attr_in4_max.dev_attr.attr,
1119
&sensor_dev_attr_in4_alarm.dev_attr.attr,
1123
static const struct attribute_group lm85_group_in4 = {
1124
.attrs = lm85_attributes_in4,
1127
static struct attribute *lm85_attributes_in567[] = {
1128
&sensor_dev_attr_in5_input.dev_attr.attr,
1129
&sensor_dev_attr_in6_input.dev_attr.attr,
1130
&sensor_dev_attr_in7_input.dev_attr.attr,
1131
&sensor_dev_attr_in5_min.dev_attr.attr,
1132
&sensor_dev_attr_in6_min.dev_attr.attr,
1133
&sensor_dev_attr_in7_min.dev_attr.attr,
1134
&sensor_dev_attr_in5_max.dev_attr.attr,
1135
&sensor_dev_attr_in6_max.dev_attr.attr,
1136
&sensor_dev_attr_in7_max.dev_attr.attr,
1137
&sensor_dev_attr_in5_alarm.dev_attr.attr,
1138
&sensor_dev_attr_in6_alarm.dev_attr.attr,
1139
&sensor_dev_attr_in7_alarm.dev_attr.attr,
1143
static const struct attribute_group lm85_group_in567 = {
1144
.attrs = lm85_attributes_in567,
1147
static void lm85_init_client(struct i2c_client *client)
1151
/* Start monitoring if needed */
1152
value = lm85_read_value(client, LM85_REG_CONFIG);
1153
if (!(value & 0x01)) {
1154
dev_info(&client->dev, "Starting monitoring\n");
1155
lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
1158
/* Warn about unusual configuration bits */
1160
dev_warn(&client->dev, "Device configuration is locked\n");
1161
if (!(value & 0x04))
1162
dev_warn(&client->dev, "Device is not ready\n");
1165
static int lm85_is_fake(struct i2c_client *client)
1168
* Differenciate between real LM96000 and Winbond WPCD377I. The latter
1169
* emulate the former except that it has no hardware monitoring function
1170
* so the readings are always 0.
1175
for (i = 0; i < 8; i++) {
1176
in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
1177
fan = i2c_smbus_read_byte_data(client, 0x28 + i);
1178
if (in_temp != 0x00 || fan != 0xff)
1185
/* Return 0 if detection is successful, -ENODEV otherwise */
1186
static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
1188
struct i2c_adapter *adapter = client->adapter;
1189
int address = client->addr;
1190
const char *type_name;
1191
int company, verstep;
1193
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1194
/* We need to be able to do byte I/O */
1198
/* Determine the chip type */
1199
company = lm85_read_value(client, LM85_REG_COMPANY);
1200
verstep = lm85_read_value(client, LM85_REG_VERSTEP);
1202
dev_dbg(&adapter->dev, "Detecting device at 0x%02x with "
1203
"COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
1204
address, company, verstep);
1206
/* All supported chips have the version in common */
1207
if ((verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC &&
1208
(verstep & LM85_VERSTEP_VMASK) != LM85_VERSTEP_GENERIC2) {
1209
dev_dbg(&adapter->dev,
1210
"Autodetection failed: unsupported version\n");
1215
/* Now, refine the detection */
1216
if (company == LM85_COMPANY_NATIONAL) {
1218
case LM85_VERSTEP_LM85C:
1219
type_name = "lm85c";
1221
case LM85_VERSTEP_LM85B:
1222
type_name = "lm85b";
1224
case LM85_VERSTEP_LM96000_1:
1225
case LM85_VERSTEP_LM96000_2:
1226
/* Check for Winbond WPCD377I */
1227
if (lm85_is_fake(client)) {
1228
dev_dbg(&adapter->dev,
1229
"Found Winbond WPCD377I, ignoring\n");
1234
} else if (company == LM85_COMPANY_ANALOG_DEV) {
1236
case LM85_VERSTEP_ADM1027:
1237
type_name = "adm1027";
1239
case LM85_VERSTEP_ADT7463:
1240
case LM85_VERSTEP_ADT7463C:
1241
type_name = "adt7463";
1243
case LM85_VERSTEP_ADT7468_1:
1244
case LM85_VERSTEP_ADT7468_2:
1245
type_name = "adt7468";
1248
} else if (company == LM85_COMPANY_SMSC) {
1250
case LM85_VERSTEP_EMC6D100_A0:
1251
case LM85_VERSTEP_EMC6D100_A1:
1252
/* Note: we can't tell a '100 from a '101 */
1253
type_name = "emc6d100";
1255
case LM85_VERSTEP_EMC6D102:
1256
type_name = "emc6d102";
1258
case LM85_VERSTEP_EMC6D103_A0:
1259
case LM85_VERSTEP_EMC6D103_A1:
1260
type_name = "emc6d103";
1262
case LM85_VERSTEP_EMC6D103S:
1263
type_name = "emc6d103s";
1267
dev_dbg(&adapter->dev,
1268
"Autodetection failed: unknown vendor\n");
1272
strlcpy(info->type, type_name, I2C_NAME_SIZE);
1277
static void lm85_remove_files(struct i2c_client *client, struct lm85_data *data)
1279
sysfs_remove_group(&client->dev.kobj, &lm85_group);
1280
if (data->type != emc6d103s) {
1281
sysfs_remove_group(&client->dev.kobj, &lm85_group_minctl);
1282
sysfs_remove_group(&client->dev.kobj, &lm85_group_temp_off);
1284
if (!data->has_vid5)
1285
sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
1286
if (data->type == emc6d100)
1287
sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
1290
static int lm85_probe(struct i2c_client *client,
1291
const struct i2c_device_id *id)
1293
struct lm85_data *data;
1296
data = kzalloc(sizeof(struct lm85_data), GFP_KERNEL);
1300
i2c_set_clientdata(client, data);
1301
data->type = id->driver_data;
1302
mutex_init(&data->update_lock);
1304
/* Fill in the chip specific driver values */
1305
switch (data->type) {
1313
data->freq_map = adm1027_freq_map;
1316
data->freq_map = lm85_freq_map;
1319
/* Set the VRM version */
1320
data->vrm = vid_which_vrm();
1322
/* Initialize the LM85 chip */
1323
lm85_init_client(client);
1325
/* Register sysfs hooks */
1326
err = sysfs_create_group(&client->dev.kobj, &lm85_group);
1330
/* minctl and temp_off exist on all chips except emc6d103s */
1331
if (data->type != emc6d103s) {
1332
err = sysfs_create_group(&client->dev.kobj, &lm85_group_minctl);
1334
goto err_remove_files;
1335
err = sysfs_create_group(&client->dev.kobj,
1336
&lm85_group_temp_off);
1338
goto err_remove_files;
1341
/* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
1342
as a sixth digital VID input rather than an analog input. */
1343
if (data->type == adt7463 || data->type == adt7468) {
1344
u8 vid = lm85_read_value(client, LM85_REG_VID);
1346
data->has_vid5 = true;
1349
if (!data->has_vid5)
1350
if ((err = sysfs_create_group(&client->dev.kobj,
1352
goto err_remove_files;
1354
/* The EMC6D100 has 3 additional voltage inputs */
1355
if (data->type == emc6d100)
1356
if ((err = sysfs_create_group(&client->dev.kobj,
1357
&lm85_group_in567)))
1358
goto err_remove_files;
1360
data->hwmon_dev = hwmon_device_register(&client->dev);
1361
if (IS_ERR(data->hwmon_dev)) {
1362
err = PTR_ERR(data->hwmon_dev);
1363
goto err_remove_files;
1368
/* Error out and cleanup code */
1370
lm85_remove_files(client, data);
1376
static int lm85_remove(struct i2c_client *client)
1378
struct lm85_data *data = i2c_get_clientdata(client);
1379
hwmon_device_unregister(data->hwmon_dev);
1380
lm85_remove_files(client, data);
1386
static int lm85_read_value(struct i2c_client *client, u8 reg)
1390
/* What size location is it? */
1392
case LM85_REG_FAN(0): /* Read WORD data */
1393
case LM85_REG_FAN(1):
1394
case LM85_REG_FAN(2):
1395
case LM85_REG_FAN(3):
1396
case LM85_REG_FAN_MIN(0):
1397
case LM85_REG_FAN_MIN(1):
1398
case LM85_REG_FAN_MIN(2):
1399
case LM85_REG_FAN_MIN(3):
1400
case LM85_REG_ALARM1: /* Read both bytes at once */
1401
res = i2c_smbus_read_byte_data(client, reg) & 0xff;
1402
res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
1404
default: /* Read BYTE data */
1405
res = i2c_smbus_read_byte_data(client, reg);
1412
static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
1415
case LM85_REG_FAN(0): /* Write WORD data */
1416
case LM85_REG_FAN(1):
1417
case LM85_REG_FAN(2):
1418
case LM85_REG_FAN(3):
1419
case LM85_REG_FAN_MIN(0):
1420
case LM85_REG_FAN_MIN(1):
1421
case LM85_REG_FAN_MIN(2):
1422
case LM85_REG_FAN_MIN(3):
1423
/* NOTE: ALARM is read only, so not included here */
1424
i2c_smbus_write_byte_data(client, reg, value & 0xff);
1425
i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
1427
default: /* Write BYTE data */
1428
i2c_smbus_write_byte_data(client, reg, value);
1433
static struct lm85_data *lm85_update_device(struct device *dev)
1435
struct i2c_client *client = to_i2c_client(dev);
1436
struct lm85_data *data = i2c_get_clientdata(client);
1439
mutex_lock(&data->update_lock);
1442
time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
1443
/* Things that change quickly */
1444
dev_dbg(&client->dev, "Reading sensor values\n");
1446
/* Have to read extended bits first to "freeze" the
1447
* more significant bits that are read later.
1448
* There are 2 additional resolution bits per channel and we
1449
* have room for 4, so we shift them to the left.
1451
if (data->type == adm1027 || data->type == adt7463 ||
1452
data->type == adt7468) {
1453
int ext1 = lm85_read_value(client,
1454
ADM1027_REG_EXTEND_ADC1);
1455
int ext2 = lm85_read_value(client,
1456
ADM1027_REG_EXTEND_ADC2);
1457
int val = (ext1 << 8) + ext2;
1459
for (i = 0; i <= 4; i++)
1461
((val >> (i * 2)) & 0x03) << 2;
1463
for (i = 0; i <= 2; i++)
1465
(val >> ((i + 4) * 2)) & 0x0c;
1468
data->vid = lm85_read_value(client, LM85_REG_VID);
1470
for (i = 0; i <= 3; ++i) {
1472
lm85_read_value(client, LM85_REG_IN(i));
1474
lm85_read_value(client, LM85_REG_FAN(i));
1477
if (!data->has_vid5)
1478
data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
1480
if (data->type == adt7468)
1481
data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
1483
for (i = 0; i <= 2; ++i) {
1485
lm85_read_value(client, LM85_REG_TEMP(i));
1487
lm85_read_value(client, LM85_REG_PWM(i));
1489
if (IS_ADT7468_OFF64(data))
1490
data->temp[i] -= 64;
1493
data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
1495
if (data->type == emc6d100) {
1496
/* Three more voltage sensors */
1497
for (i = 5; i <= 7; ++i) {
1498
data->in[i] = lm85_read_value(client,
1499
EMC6D100_REG_IN(i));
1501
/* More alarm bits */
1502
data->alarms |= lm85_read_value(client,
1503
EMC6D100_REG_ALARM3) << 16;
1504
} else if (data->type == emc6d102 || data->type == emc6d103 ||
1505
data->type == emc6d103s) {
1506
/* Have to read LSB bits after the MSB ones because
1507
the reading of the MSB bits has frozen the
1508
LSBs (backward from the ADM1027).
1510
int ext1 = lm85_read_value(client,
1511
EMC6D102_REG_EXTEND_ADC1);
1512
int ext2 = lm85_read_value(client,
1513
EMC6D102_REG_EXTEND_ADC2);
1514
int ext3 = lm85_read_value(client,
1515
EMC6D102_REG_EXTEND_ADC3);
1516
int ext4 = lm85_read_value(client,
1517
EMC6D102_REG_EXTEND_ADC4);
1518
data->in_ext[0] = ext3 & 0x0f;
1519
data->in_ext[1] = ext4 & 0x0f;
1520
data->in_ext[2] = ext4 >> 4;
1521
data->in_ext[3] = ext3 >> 4;
1522
data->in_ext[4] = ext2 >> 4;
1524
data->temp_ext[0] = ext1 & 0x0f;
1525
data->temp_ext[1] = ext2 & 0x0f;
1526
data->temp_ext[2] = ext1 >> 4;
1529
data->last_reading = jiffies;
1530
} /* last_reading */
1533
time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
1534
/* Things that don't change often */
1535
dev_dbg(&client->dev, "Reading config values\n");
1537
for (i = 0; i <= 3; ++i) {
1539
lm85_read_value(client, LM85_REG_IN_MIN(i));
1541
lm85_read_value(client, LM85_REG_IN_MAX(i));
1543
lm85_read_value(client, LM85_REG_FAN_MIN(i));
1546
if (!data->has_vid5) {
1547
data->in_min[4] = lm85_read_value(client,
1548
LM85_REG_IN_MIN(4));
1549
data->in_max[4] = lm85_read_value(client,
1550
LM85_REG_IN_MAX(4));
1553
if (data->type == emc6d100) {
1554
for (i = 5; i <= 7; ++i) {
1555
data->in_min[i] = lm85_read_value(client,
1556
EMC6D100_REG_IN_MIN(i));
1557
data->in_max[i] = lm85_read_value(client,
1558
EMC6D100_REG_IN_MAX(i));
1562
for (i = 0; i <= 2; ++i) {
1566
lm85_read_value(client, LM85_REG_TEMP_MIN(i));
1568
lm85_read_value(client, LM85_REG_TEMP_MAX(i));
1570
data->autofan[i].config =
1571
lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
1572
val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
1573
data->pwm_freq[i] = val & 0x07;
1574
data->zone[i].range = val >> 4;
1575
data->autofan[i].min_pwm =
1576
lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
1577
data->zone[i].limit =
1578
lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
1579
data->zone[i].critical =
1580
lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
1582
if (IS_ADT7468_OFF64(data)) {
1583
data->temp_min[i] -= 64;
1584
data->temp_max[i] -= 64;
1585
data->zone[i].limit -= 64;
1586
data->zone[i].critical -= 64;
1590
if (data->type != emc6d103s) {
1591
i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
1592
data->autofan[0].min_off = (i & 0x20) != 0;
1593
data->autofan[1].min_off = (i & 0x40) != 0;
1594
data->autofan[2].min_off = (i & 0x80) != 0;
1596
i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
1597
data->zone[0].hyst = i >> 4;
1598
data->zone[1].hyst = i & 0x0f;
1600
i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
1601
data->zone[2].hyst = i >> 4;
1604
data->last_config = jiffies;
1609
mutex_unlock(&data->update_lock);
1615
static int __init sm_lm85_init(void)
1617
return i2c_add_driver(&lm85_driver);
1620
static void __exit sm_lm85_exit(void)
1622
i2c_del_driver(&lm85_driver);
1625
MODULE_LICENSE("GPL");
1626
MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
1627
"Margit Schubert-While <margitsw@t-online.de>, "
1628
"Justin Thiessen <jthiessen@penguincomputing.com>");
1629
MODULE_DESCRIPTION("LM85-B, LM85-C driver");
1631
module_init(sm_lm85_init);
1632
module_exit(sm_lm85_exit);