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![Javier Martinez Canillas](/assets/img/avatar_default.png)
The driver doesn't have a struct of_device_id table but supported devices are registered via Device Trees. This is working on the assumption that a I2C device registered via OF will always match a legacy I2C device ID and that the MODALIAS reported will always be of the form i2c:<device>. But this could change in the future so the correct approach is to have an OF device ID table if the devices are registered via OF. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
1697 lines
48 KiB
C
1697 lines
48 KiB
C
/*
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* lm85.c - Part of lm_sensors, Linux kernel modules for hardware
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* monitoring
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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--2014 Jean Delvare <jdelvare@suse.de>
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*
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* Chip details at <http://www.national.com/ds/LM/LM85.pdf>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/of_device.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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#include <linux/util_macros.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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enum chips {
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lm85,
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adm1027, adt7463, adt7468,
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emc6d100, emc6d102, emc6d103, emc6d103s
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};
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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_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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/*
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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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*/
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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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};
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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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SCALE(clamp_val(val, 0, 255 * lm85_scaling[n] / 192), \
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lm85_scaling[n], 192)
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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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{
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if (!val)
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return 0xffff;
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return clamp_val(5400000 / val, 1, 0xfffe);
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}
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#define FAN_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
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5400000 / (val))
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/* Temperature is reported in .001 degC increments */
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#define TEMP_TO_REG(val) \
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DIV_ROUND_CLOSEST(clamp_val((val), -127000, 127000), 1000)
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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) clamp_val(val, 0, 255)
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#define PWM_FROM_REG(val) (val)
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/*
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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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*
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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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*
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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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*/
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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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};
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static int RANGE_TO_REG(long range)
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{
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return find_closest(range, lm85_range_map, ARRAY_SIZE(lm85_range_map));
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}
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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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};
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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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};
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#define FREQ_MAP_LEN 8
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static int FREQ_TO_REG(const int *map,
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unsigned int map_size, unsigned long freq)
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{
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return find_closest(freq, map, map_size);
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}
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static int FREQ_FROM_REG(const int *map, u8 reg)
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{
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return map[reg & 0x07];
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}
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/*
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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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*/
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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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{
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int i;
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for (i = 0; i <= 7; ++i)
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if (zone == lm85_zone_map[i])
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break;
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if (i > 7) /* Not found. */
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i = 3; /* Always 100% */
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return i << 5;
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}
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#define HYST_TO_REG(val) clamp_val(((val) + 500) / 1000, 0, 15)
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#define HYST_FROM_REG(val) ((val) * 1000)
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/*
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* Chip sampling rates
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*
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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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*
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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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*/
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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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/*
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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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*/
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struct lm85_zone {
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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; /*
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* Actual "max" temperature specified. Preserved
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* to prevent "drift" as other autofan control
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* values change.
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*/
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};
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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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};
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/*
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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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*/
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struct lm85_data {
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struct i2c_client *client;
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const struct attribute_group *groups[6];
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const int *freq_map;
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enum chips type;
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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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};
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static int lm85_read_value(struct i2c_client *client, u8 reg)
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{
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int res;
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/* What size location is it? */
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switch (reg) {
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case LM85_REG_FAN(0): /* Read WORD data */
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case LM85_REG_FAN(1):
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case LM85_REG_FAN(2):
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case LM85_REG_FAN(3):
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case LM85_REG_FAN_MIN(0):
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case LM85_REG_FAN_MIN(1):
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case LM85_REG_FAN_MIN(2):
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case LM85_REG_FAN_MIN(3):
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case LM85_REG_ALARM1: /* Read both bytes at once */
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res = i2c_smbus_read_byte_data(client, reg) & 0xff;
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res |= i2c_smbus_read_byte_data(client, reg + 1) << 8;
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break;
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default: /* Read BYTE data */
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res = i2c_smbus_read_byte_data(client, reg);
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break;
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}
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return res;
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}
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static void lm85_write_value(struct i2c_client *client, u8 reg, int value)
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{
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switch (reg) {
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case LM85_REG_FAN(0): /* Write WORD data */
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case LM85_REG_FAN(1):
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case LM85_REG_FAN(2):
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case LM85_REG_FAN(3):
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case LM85_REG_FAN_MIN(0):
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case LM85_REG_FAN_MIN(1):
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case LM85_REG_FAN_MIN(2):
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case LM85_REG_FAN_MIN(3):
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/* NOTE: ALARM is read only, so not included here */
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i2c_smbus_write_byte_data(client, reg, value & 0xff);
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i2c_smbus_write_byte_data(client, reg + 1, value >> 8);
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break;
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default: /* Write BYTE data */
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i2c_smbus_write_byte_data(client, reg, value);
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break;
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}
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}
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static struct lm85_data *lm85_update_device(struct device *dev)
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{
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struct lm85_data *data = dev_get_drvdata(dev);
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struct i2c_client *client = data->client;
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int i;
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mutex_lock(&data->update_lock);
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if (!data->valid ||
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time_after(jiffies, data->last_reading + LM85_DATA_INTERVAL)) {
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/* Things that change quickly */
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dev_dbg(&client->dev, "Reading sensor values\n");
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/*
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* Have to read extended bits first to "freeze" the
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* more significant bits that are read later.
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* There are 2 additional resolution bits per channel and we
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* have room for 4, so we shift them to the left.
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*/
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if (data->type == adm1027 || data->type == adt7463 ||
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data->type == adt7468) {
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int ext1 = lm85_read_value(client,
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ADM1027_REG_EXTEND_ADC1);
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int ext2 = lm85_read_value(client,
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ADM1027_REG_EXTEND_ADC2);
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int val = (ext1 << 8) + ext2;
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for (i = 0; i <= 4; i++)
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data->in_ext[i] =
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((val >> (i * 2)) & 0x03) << 2;
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for (i = 0; i <= 2; i++)
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data->temp_ext[i] =
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(val >> ((i + 4) * 2)) & 0x0c;
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}
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data->vid = lm85_read_value(client, LM85_REG_VID);
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for (i = 0; i <= 3; ++i) {
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data->in[i] =
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lm85_read_value(client, LM85_REG_IN(i));
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data->fan[i] =
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lm85_read_value(client, LM85_REG_FAN(i));
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}
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if (!data->has_vid5)
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data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
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if (data->type == adt7468)
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data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
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for (i = 0; i <= 2; ++i) {
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data->temp[i] =
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lm85_read_value(client, LM85_REG_TEMP(i));
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data->pwm[i] =
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lm85_read_value(client, LM85_REG_PWM(i));
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|
|
if (IS_ADT7468_OFF64(data))
|
|
data->temp[i] -= 64;
|
|
}
|
|
|
|
data->alarms = lm85_read_value(client, LM85_REG_ALARM1);
|
|
|
|
if (data->type == emc6d100) {
|
|
/* Three more voltage sensors */
|
|
for (i = 5; i <= 7; ++i) {
|
|
data->in[i] = lm85_read_value(client,
|
|
EMC6D100_REG_IN(i));
|
|
}
|
|
/* More alarm bits */
|
|
data->alarms |= lm85_read_value(client,
|
|
EMC6D100_REG_ALARM3) << 16;
|
|
} else if (data->type == emc6d102 || data->type == emc6d103 ||
|
|
data->type == emc6d103s) {
|
|
/*
|
|
* Have to read LSB bits after the MSB ones because
|
|
* the reading of the MSB bits has frozen the
|
|
* LSBs (backward from the ADM1027).
|
|
*/
|
|
int ext1 = lm85_read_value(client,
|
|
EMC6D102_REG_EXTEND_ADC1);
|
|
int ext2 = lm85_read_value(client,
|
|
EMC6D102_REG_EXTEND_ADC2);
|
|
int ext3 = lm85_read_value(client,
|
|
EMC6D102_REG_EXTEND_ADC3);
|
|
int ext4 = lm85_read_value(client,
|
|
EMC6D102_REG_EXTEND_ADC4);
|
|
data->in_ext[0] = ext3 & 0x0f;
|
|
data->in_ext[1] = ext4 & 0x0f;
|
|
data->in_ext[2] = ext4 >> 4;
|
|
data->in_ext[3] = ext3 >> 4;
|
|
data->in_ext[4] = ext2 >> 4;
|
|
|
|
data->temp_ext[0] = ext1 & 0x0f;
|
|
data->temp_ext[1] = ext2 & 0x0f;
|
|
data->temp_ext[2] = ext1 >> 4;
|
|
}
|
|
|
|
data->last_reading = jiffies;
|
|
} /* last_reading */
|
|
|
|
if (!data->valid ||
|
|
time_after(jiffies, data->last_config + LM85_CONFIG_INTERVAL)) {
|
|
/* Things that don't change often */
|
|
dev_dbg(&client->dev, "Reading config values\n");
|
|
|
|
for (i = 0; i <= 3; ++i) {
|
|
data->in_min[i] =
|
|
lm85_read_value(client, LM85_REG_IN_MIN(i));
|
|
data->in_max[i] =
|
|
lm85_read_value(client, LM85_REG_IN_MAX(i));
|
|
data->fan_min[i] =
|
|
lm85_read_value(client, LM85_REG_FAN_MIN(i));
|
|
}
|
|
|
|
if (!data->has_vid5) {
|
|
data->in_min[4] = lm85_read_value(client,
|
|
LM85_REG_IN_MIN(4));
|
|
data->in_max[4] = lm85_read_value(client,
|
|
LM85_REG_IN_MAX(4));
|
|
}
|
|
|
|
if (data->type == emc6d100) {
|
|
for (i = 5; i <= 7; ++i) {
|
|
data->in_min[i] = lm85_read_value(client,
|
|
EMC6D100_REG_IN_MIN(i));
|
|
data->in_max[i] = lm85_read_value(client,
|
|
EMC6D100_REG_IN_MAX(i));
|
|
}
|
|
}
|
|
|
|
for (i = 0; i <= 2; ++i) {
|
|
int val;
|
|
|
|
data->temp_min[i] =
|
|
lm85_read_value(client, LM85_REG_TEMP_MIN(i));
|
|
data->temp_max[i] =
|
|
lm85_read_value(client, LM85_REG_TEMP_MAX(i));
|
|
|
|
data->autofan[i].config =
|
|
lm85_read_value(client, LM85_REG_AFAN_CONFIG(i));
|
|
val = lm85_read_value(client, LM85_REG_AFAN_RANGE(i));
|
|
data->pwm_freq[i] = val & 0x07;
|
|
data->zone[i].range = val >> 4;
|
|
data->autofan[i].min_pwm =
|
|
lm85_read_value(client, LM85_REG_AFAN_MINPWM(i));
|
|
data->zone[i].limit =
|
|
lm85_read_value(client, LM85_REG_AFAN_LIMIT(i));
|
|
data->zone[i].critical =
|
|
lm85_read_value(client, LM85_REG_AFAN_CRITICAL(i));
|
|
|
|
if (IS_ADT7468_OFF64(data)) {
|
|
data->temp_min[i] -= 64;
|
|
data->temp_max[i] -= 64;
|
|
data->zone[i].limit -= 64;
|
|
data->zone[i].critical -= 64;
|
|
}
|
|
}
|
|
|
|
if (data->type != emc6d103s) {
|
|
i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
|
|
data->autofan[0].min_off = (i & 0x20) != 0;
|
|
data->autofan[1].min_off = (i & 0x40) != 0;
|
|
data->autofan[2].min_off = (i & 0x80) != 0;
|
|
|
|
i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
|
|
data->zone[0].hyst = i >> 4;
|
|
data->zone[1].hyst = i & 0x0f;
|
|
|
|
i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
|
|
data->zone[2].hyst = i >> 4;
|
|
}
|
|
|
|
data->last_config = jiffies;
|
|
} /* last_config */
|
|
|
|
data->valid = 1;
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
/* 4 Fans */
|
|
static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr]));
|
|
}
|
|
|
|
static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr]));
|
|
}
|
|
|
|
static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
unsigned long val;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->fan_min[nr] = FAN_TO_REG(val);
|
|
lm85_write_value(client, LM85_REG_FAN_MIN(nr), data->fan_min[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define show_fan_offset(offset) \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
|
|
show_fan, NULL, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
|
|
show_fan_min, set_fan_min, offset - 1)
|
|
|
|
show_fan_offset(1);
|
|
show_fan_offset(2);
|
|
show_fan_offset(3);
|
|
show_fan_offset(4);
|
|
|
|
/* vid, vrm, alarms */
|
|
|
|
static ssize_t cpu0_vid_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
int vid;
|
|
|
|
if (data->has_vid5) {
|
|
/* 6-pin VID (VRM 10) */
|
|
vid = vid_from_reg(data->vid & 0x3f, data->vrm);
|
|
} else {
|
|
/* 5-pin VID (VRM 9) */
|
|
vid = vid_from_reg(data->vid & 0x1f, data->vrm);
|
|
}
|
|
|
|
return sprintf(buf, "%d\n", vid);
|
|
}
|
|
|
|
static DEVICE_ATTR_RO(cpu0_vid);
|
|
|
|
static ssize_t vrm_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
return sprintf(buf, "%ld\n", (long) data->vrm);
|
|
}
|
|
|
|
static ssize_t vrm_store(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
unsigned long val;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
if (val > 255)
|
|
return -EINVAL;
|
|
|
|
data->vrm = val;
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR_RW(vrm);
|
|
|
|
static ssize_t alarms_show(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%u\n", data->alarms);
|
|
}
|
|
|
|
static DEVICE_ATTR_RO(alarms);
|
|
|
|
static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%u\n", (data->alarms >> nr) & 1);
|
|
}
|
|
|
|
static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0);
|
|
static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1);
|
|
static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2);
|
|
static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3);
|
|
static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8);
|
|
static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 18);
|
|
static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 16);
|
|
static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 17);
|
|
static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4);
|
|
static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_alarm, NULL, 14);
|
|
static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5);
|
|
static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 6);
|
|
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15);
|
|
static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 10);
|
|
static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 11);
|
|
static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 12);
|
|
static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 13);
|
|
|
|
/* pwm */
|
|
|
|
static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
|
|
}
|
|
|
|
static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
unsigned long val;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->pwm[nr] = PWM_TO_REG(val);
|
|
lm85_write_value(client, LM85_REG_PWM(nr), data->pwm[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
|
|
*attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
int pwm_zone, enable;
|
|
|
|
pwm_zone = ZONE_FROM_REG(data->autofan[nr].config);
|
|
switch (pwm_zone) {
|
|
case -1: /* PWM is always at 100% */
|
|
enable = 0;
|
|
break;
|
|
case 0: /* PWM is always at 0% */
|
|
case -2: /* PWM responds to manual control */
|
|
enable = 1;
|
|
break;
|
|
default: /* PWM in automatic mode */
|
|
enable = 2;
|
|
}
|
|
return sprintf(buf, "%d\n", enable);
|
|
}
|
|
|
|
static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
|
|
*attr, const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
u8 config;
|
|
unsigned long val;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
switch (val) {
|
|
case 0:
|
|
config = 3;
|
|
break;
|
|
case 1:
|
|
config = 7;
|
|
break;
|
|
case 2:
|
|
/*
|
|
* Here we have to choose arbitrarily one of the 5 possible
|
|
* configurations; I go for the safest
|
|
*/
|
|
config = 6;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->autofan[nr].config = lm85_read_value(client,
|
|
LM85_REG_AFAN_CONFIG(nr));
|
|
data->autofan[nr].config = (data->autofan[nr].config & ~0xe0)
|
|
| (config << 5);
|
|
lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
|
|
data->autofan[nr].config);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm_freq(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
int freq;
|
|
|
|
if (IS_ADT7468_HFPWM(data))
|
|
freq = 22500;
|
|
else
|
|
freq = FREQ_FROM_REG(data->freq_map, data->pwm_freq[nr]);
|
|
|
|
return sprintf(buf, "%d\n", freq);
|
|
}
|
|
|
|
static ssize_t set_pwm_freq(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
unsigned long val;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
/*
|
|
* The ADT7468 has a special high-frequency PWM output mode,
|
|
* where all PWM outputs are driven by a 22.5 kHz clock.
|
|
* This might confuse the user, but there's not much we can do.
|
|
*/
|
|
if (data->type == adt7468 && val >= 11300) { /* High freq. mode */
|
|
data->cfg5 &= ~ADT7468_HFPWM;
|
|
lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
|
|
} else { /* Low freq. mode */
|
|
data->pwm_freq[nr] = FREQ_TO_REG(data->freq_map,
|
|
FREQ_MAP_LEN, val);
|
|
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
|
|
(data->zone[nr].range << 4)
|
|
| data->pwm_freq[nr]);
|
|
if (data->type == adt7468) {
|
|
data->cfg5 |= ADT7468_HFPWM;
|
|
lm85_write_value(client, ADT7468_REG_CFG5, data->cfg5);
|
|
}
|
|
}
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define show_pwm_reg(offset) \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
|
|
show_pwm, set_pwm, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
|
|
show_pwm_enable, set_pwm_enable, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset##_freq, S_IRUGO | S_IWUSR, \
|
|
show_pwm_freq, set_pwm_freq, offset - 1)
|
|
|
|
show_pwm_reg(1);
|
|
show_pwm_reg(2);
|
|
show_pwm_reg(3);
|
|
|
|
/* Voltages */
|
|
|
|
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", INSEXT_FROM_REG(nr, data->in[nr],
|
|
data->in_ext[nr]));
|
|
}
|
|
|
|
static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_min[nr]));
|
|
}
|
|
|
|
static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->in_min[nr] = INS_TO_REG(nr, val);
|
|
lm85_write_value(client, LM85_REG_IN_MIN(nr), data->in_min[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", INS_FROM_REG(nr, data->in_max[nr]));
|
|
}
|
|
|
|
static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->in_max[nr] = INS_TO_REG(nr, val);
|
|
lm85_write_value(client, LM85_REG_IN_MAX(nr), data->in_max[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define show_in_reg(offset) \
|
|
static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
|
|
show_in, NULL, offset); \
|
|
static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
|
|
show_in_min, set_in_min, offset); \
|
|
static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
|
|
show_in_max, set_in_max, offset)
|
|
|
|
show_in_reg(0);
|
|
show_in_reg(1);
|
|
show_in_reg(2);
|
|
show_in_reg(3);
|
|
show_in_reg(4);
|
|
show_in_reg(5);
|
|
show_in_reg(6);
|
|
show_in_reg(7);
|
|
|
|
/* Temps */
|
|
|
|
static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMPEXT_FROM_REG(data->temp[nr],
|
|
data->temp_ext[nr]));
|
|
}
|
|
|
|
static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
|
|
}
|
|
|
|
static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
if (IS_ADT7468_OFF64(data))
|
|
val += 64;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->temp_min[nr] = TEMP_TO_REG(val);
|
|
lm85_write_value(client, LM85_REG_TEMP_MIN(nr), data->temp_min[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
|
|
}
|
|
|
|
static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
if (IS_ADT7468_OFF64(data))
|
|
val += 64;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->temp_max[nr] = TEMP_TO_REG(val);
|
|
lm85_write_value(client, LM85_REG_TEMP_MAX(nr), data->temp_max[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define show_temp_reg(offset) \
|
|
static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \
|
|
show_temp, NULL, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \
|
|
show_temp_min, set_temp_min, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \
|
|
show_temp_max, set_temp_max, offset - 1);
|
|
|
|
show_temp_reg(1);
|
|
show_temp_reg(2);
|
|
show_temp_reg(3);
|
|
|
|
|
|
/* Automatic PWM control */
|
|
|
|
static ssize_t show_pwm_auto_channels(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", ZONE_FROM_REG(data->autofan[nr].config));
|
|
}
|
|
|
|
static ssize_t set_pwm_auto_channels(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->autofan[nr].config = (data->autofan[nr].config & (~0xe0))
|
|
| ZONE_TO_REG(val);
|
|
lm85_write_value(client, LM85_REG_AFAN_CONFIG(nr),
|
|
data->autofan[nr].config);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm_auto_pwm_min(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", PWM_FROM_REG(data->autofan[nr].min_pwm));
|
|
}
|
|
|
|
static ssize_t set_pwm_auto_pwm_min(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
unsigned long val;
|
|
int err;
|
|
|
|
err = kstrtoul(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->autofan[nr].min_pwm = PWM_TO_REG(val);
|
|
lm85_write_value(client, LM85_REG_AFAN_MINPWM(nr),
|
|
data->autofan[nr].min_pwm);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm_auto_pwm_minctl(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->autofan[nr].min_off);
|
|
}
|
|
|
|
static ssize_t set_pwm_auto_pwm_minctl(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
u8 tmp;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->autofan[nr].min_off = val;
|
|
tmp = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
|
|
tmp &= ~(0x20 << nr);
|
|
if (data->autofan[nr].min_off)
|
|
tmp |= 0x20 << nr;
|
|
lm85_write_value(client, LM85_REG_AFAN_SPIKE1, tmp);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define pwm_auto(offset) \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels, \
|
|
S_IRUGO | S_IWUSR, show_pwm_auto_channels, \
|
|
set_pwm_auto_channels, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_min, \
|
|
S_IRUGO | S_IWUSR, show_pwm_auto_pwm_min, \
|
|
set_pwm_auto_pwm_min, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_pwm_minctl, \
|
|
S_IRUGO | S_IWUSR, show_pwm_auto_pwm_minctl, \
|
|
set_pwm_auto_pwm_minctl, offset - 1)
|
|
|
|
pwm_auto(1);
|
|
pwm_auto(2);
|
|
pwm_auto(3);
|
|
|
|
/* Temperature settings for automatic PWM control */
|
|
|
|
static ssize_t show_temp_auto_temp_off(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) -
|
|
HYST_FROM_REG(data->zone[nr].hyst));
|
|
}
|
|
|
|
static ssize_t set_temp_auto_temp_off(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
int min;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
min = TEMP_FROM_REG(data->zone[nr].limit);
|
|
data->zone[nr].hyst = HYST_TO_REG(min - val);
|
|
if (nr == 0 || nr == 1) {
|
|
lm85_write_value(client, LM85_REG_AFAN_HYST1,
|
|
(data->zone[0].hyst << 4)
|
|
| data->zone[1].hyst);
|
|
} else {
|
|
lm85_write_value(client, LM85_REG_AFAN_HYST2,
|
|
(data->zone[2].hyst << 4));
|
|
}
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_temp_auto_temp_min(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit));
|
|
}
|
|
|
|
static ssize_t set_temp_auto_temp_min(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->zone[nr].limit = TEMP_TO_REG(val);
|
|
lm85_write_value(client, LM85_REG_AFAN_LIMIT(nr),
|
|
data->zone[nr].limit);
|
|
|
|
/* Update temp_auto_max and temp_auto_range */
|
|
data->zone[nr].range = RANGE_TO_REG(
|
|
TEMP_FROM_REG(data->zone[nr].max_desired) -
|
|
TEMP_FROM_REG(data->zone[nr].limit));
|
|
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
|
|
((data->zone[nr].range & 0x0f) << 4)
|
|
| (data->pwm_freq[nr] & 0x07));
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_temp_auto_temp_max(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].limit) +
|
|
RANGE_FROM_REG(data->zone[nr].range));
|
|
}
|
|
|
|
static ssize_t set_temp_auto_temp_max(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
int min;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
min = TEMP_FROM_REG(data->zone[nr].limit);
|
|
data->zone[nr].max_desired = TEMP_TO_REG(val);
|
|
data->zone[nr].range = RANGE_TO_REG(
|
|
val - min);
|
|
lm85_write_value(client, LM85_REG_AFAN_RANGE(nr),
|
|
((data->zone[nr].range & 0x0f) << 4)
|
|
| (data->pwm_freq[nr] & 0x07));
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_temp_auto_temp_crit(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = lm85_update_device(dev);
|
|
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->zone[nr].critical));
|
|
}
|
|
|
|
static ssize_t set_temp_auto_temp_crit(struct device *dev,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int nr = to_sensor_dev_attr(attr)->index;
|
|
struct lm85_data *data = dev_get_drvdata(dev);
|
|
struct i2c_client *client = data->client;
|
|
long val;
|
|
int err;
|
|
|
|
err = kstrtol(buf, 10, &val);
|
|
if (err)
|
|
return err;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->zone[nr].critical = TEMP_TO_REG(val);
|
|
lm85_write_value(client, LM85_REG_AFAN_CRITICAL(nr),
|
|
data->zone[nr].critical);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
#define temp_auto(offset) \
|
|
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_off, \
|
|
S_IRUGO | S_IWUSR, show_temp_auto_temp_off, \
|
|
set_temp_auto_temp_off, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_min, \
|
|
S_IRUGO | S_IWUSR, show_temp_auto_temp_min, \
|
|
set_temp_auto_temp_min, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_max, \
|
|
S_IRUGO | S_IWUSR, show_temp_auto_temp_max, \
|
|
set_temp_auto_temp_max, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(temp##offset##_auto_temp_crit, \
|
|
S_IRUGO | S_IWUSR, show_temp_auto_temp_crit, \
|
|
set_temp_auto_temp_crit, offset - 1);
|
|
|
|
temp_auto(1);
|
|
temp_auto(2);
|
|
temp_auto(3);
|
|
|
|
static struct attribute *lm85_attributes[] = {
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan4_alarm.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_pwm1.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_freq.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_freq.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_freq.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_in0_input.dev_attr.attr,
|
|
&sensor_dev_attr_in1_input.dev_attr.attr,
|
|
&sensor_dev_attr_in2_input.dev_attr.attr,
|
|
&sensor_dev_attr_in3_input.dev_attr.attr,
|
|
&sensor_dev_attr_in0_min.dev_attr.attr,
|
|
&sensor_dev_attr_in1_min.dev_attr.attr,
|
|
&sensor_dev_attr_in2_min.dev_attr.attr,
|
|
&sensor_dev_attr_in3_min.dev_attr.attr,
|
|
&sensor_dev_attr_in0_max.dev_attr.attr,
|
|
&sensor_dev_attr_in1_max.dev_attr.attr,
|
|
&sensor_dev_attr_in2_max.dev_attr.attr,
|
|
&sensor_dev_attr_in3_max.dev_attr.attr,
|
|
&sensor_dev_attr_in0_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in3_alarm.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_fault.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_pwm1_auto_channels.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_auto_channels.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_auto_channels.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_auto_temp_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_auto_temp_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_auto_temp_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_auto_temp_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_auto_temp_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_auto_temp_crit.dev_attr.attr,
|
|
|
|
&dev_attr_vrm.attr,
|
|
&dev_attr_cpu0_vid.attr,
|
|
&dev_attr_alarms.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group lm85_group = {
|
|
.attrs = lm85_attributes,
|
|
};
|
|
|
|
static struct attribute *lm85_attributes_minctl[] = {
|
|
&sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group lm85_group_minctl = {
|
|
.attrs = lm85_attributes_minctl,
|
|
};
|
|
|
|
static struct attribute *lm85_attributes_temp_off[] = {
|
|
&sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group lm85_group_temp_off = {
|
|
.attrs = lm85_attributes_temp_off,
|
|
};
|
|
|
|
static struct attribute *lm85_attributes_in4[] = {
|
|
&sensor_dev_attr_in4_input.dev_attr.attr,
|
|
&sensor_dev_attr_in4_min.dev_attr.attr,
|
|
&sensor_dev_attr_in4_max.dev_attr.attr,
|
|
&sensor_dev_attr_in4_alarm.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group lm85_group_in4 = {
|
|
.attrs = lm85_attributes_in4,
|
|
};
|
|
|
|
static struct attribute *lm85_attributes_in567[] = {
|
|
&sensor_dev_attr_in5_input.dev_attr.attr,
|
|
&sensor_dev_attr_in6_input.dev_attr.attr,
|
|
&sensor_dev_attr_in7_input.dev_attr.attr,
|
|
&sensor_dev_attr_in5_min.dev_attr.attr,
|
|
&sensor_dev_attr_in6_min.dev_attr.attr,
|
|
&sensor_dev_attr_in7_min.dev_attr.attr,
|
|
&sensor_dev_attr_in5_max.dev_attr.attr,
|
|
&sensor_dev_attr_in6_max.dev_attr.attr,
|
|
&sensor_dev_attr_in7_max.dev_attr.attr,
|
|
&sensor_dev_attr_in5_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in6_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_in7_alarm.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group lm85_group_in567 = {
|
|
.attrs = lm85_attributes_in567,
|
|
};
|
|
|
|
static void lm85_init_client(struct i2c_client *client)
|
|
{
|
|
int value;
|
|
|
|
/* Start monitoring if needed */
|
|
value = lm85_read_value(client, LM85_REG_CONFIG);
|
|
if (!(value & 0x01)) {
|
|
dev_info(&client->dev, "Starting monitoring\n");
|
|
lm85_write_value(client, LM85_REG_CONFIG, value | 0x01);
|
|
}
|
|
|
|
/* Warn about unusual configuration bits */
|
|
if (value & 0x02)
|
|
dev_warn(&client->dev, "Device configuration is locked\n");
|
|
if (!(value & 0x04))
|
|
dev_warn(&client->dev, "Device is not ready\n");
|
|
}
|
|
|
|
static int lm85_is_fake(struct i2c_client *client)
|
|
{
|
|
/*
|
|
* Differenciate between real LM96000 and Winbond WPCD377I. The latter
|
|
* emulate the former except that it has no hardware monitoring function
|
|
* so the readings are always 0.
|
|
*/
|
|
int i;
|
|
u8 in_temp, fan;
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
in_temp = i2c_smbus_read_byte_data(client, 0x20 + i);
|
|
fan = i2c_smbus_read_byte_data(client, 0x28 + i);
|
|
if (in_temp != 0x00 || fan != 0xff)
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */
|
|
static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
|
|
{
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
int address = client->addr;
|
|
const char *type_name = NULL;
|
|
int company, verstep;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
|
|
/* We need to be able to do byte I/O */
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Determine the chip type */
|
|
company = lm85_read_value(client, LM85_REG_COMPANY);
|
|
verstep = lm85_read_value(client, LM85_REG_VERSTEP);
|
|
|
|
dev_dbg(&adapter->dev,
|
|
"Detecting device at 0x%02x with COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
|
|
address, company, verstep);
|
|
|
|
if (company == LM85_COMPANY_NATIONAL) {
|
|
switch (verstep) {
|
|
case LM85_VERSTEP_LM85C:
|
|
type_name = "lm85c";
|
|
break;
|
|
case LM85_VERSTEP_LM85B:
|
|
type_name = "lm85b";
|
|
break;
|
|
case LM85_VERSTEP_LM96000_1:
|
|
case LM85_VERSTEP_LM96000_2:
|
|
/* Check for Winbond WPCD377I */
|
|
if (lm85_is_fake(client)) {
|
|
dev_dbg(&adapter->dev,
|
|
"Found Winbond WPCD377I, ignoring\n");
|
|
return -ENODEV;
|
|
}
|
|
type_name = "lm85";
|
|
break;
|
|
}
|
|
} else if (company == LM85_COMPANY_ANALOG_DEV) {
|
|
switch (verstep) {
|
|
case LM85_VERSTEP_ADM1027:
|
|
type_name = "adm1027";
|
|
break;
|
|
case LM85_VERSTEP_ADT7463:
|
|
case LM85_VERSTEP_ADT7463C:
|
|
type_name = "adt7463";
|
|
break;
|
|
case LM85_VERSTEP_ADT7468_1:
|
|
case LM85_VERSTEP_ADT7468_2:
|
|
type_name = "adt7468";
|
|
break;
|
|
}
|
|
} else if (company == LM85_COMPANY_SMSC) {
|
|
switch (verstep) {
|
|
case LM85_VERSTEP_EMC6D100_A0:
|
|
case LM85_VERSTEP_EMC6D100_A1:
|
|
/* Note: we can't tell a '100 from a '101 */
|
|
type_name = "emc6d100";
|
|
break;
|
|
case LM85_VERSTEP_EMC6D102:
|
|
type_name = "emc6d102";
|
|
break;
|
|
case LM85_VERSTEP_EMC6D103_A0:
|
|
case LM85_VERSTEP_EMC6D103_A1:
|
|
type_name = "emc6d103";
|
|
break;
|
|
case LM85_VERSTEP_EMC6D103S:
|
|
type_name = "emc6d103s";
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!type_name)
|
|
return -ENODEV;
|
|
|
|
strlcpy(info->type, type_name, I2C_NAME_SIZE);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lm85_probe(struct i2c_client *client, const struct i2c_device_id *id)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct device *hwmon_dev;
|
|
struct lm85_data *data;
|
|
int idx = 0;
|
|
|
|
data = devm_kzalloc(dev, sizeof(struct lm85_data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
data->client = client;
|
|
if (client->dev.of_node)
|
|
data->type = (enum chips)of_device_get_match_data(&client->dev);
|
|
else
|
|
data->type = id->driver_data;
|
|
mutex_init(&data->update_lock);
|
|
|
|
/* Fill in the chip specific driver values */
|
|
switch (data->type) {
|
|
case adm1027:
|
|
case adt7463:
|
|
case adt7468:
|
|
case emc6d100:
|
|
case emc6d102:
|
|
case emc6d103:
|
|
case emc6d103s:
|
|
data->freq_map = adm1027_freq_map;
|
|
break;
|
|
default:
|
|
data->freq_map = lm85_freq_map;
|
|
}
|
|
|
|
/* Set the VRM version */
|
|
data->vrm = vid_which_vrm();
|
|
|
|
/* Initialize the LM85 chip */
|
|
lm85_init_client(client);
|
|
|
|
/* sysfs hooks */
|
|
data->groups[idx++] = &lm85_group;
|
|
|
|
/* minctl and temp_off exist on all chips except emc6d103s */
|
|
if (data->type != emc6d103s) {
|
|
data->groups[idx++] = &lm85_group_minctl;
|
|
data->groups[idx++] = &lm85_group_temp_off;
|
|
}
|
|
|
|
/*
|
|
* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
|
|
* as a sixth digital VID input rather than an analog input.
|
|
*/
|
|
if (data->type == adt7463 || data->type == adt7468) {
|
|
u8 vid = lm85_read_value(client, LM85_REG_VID);
|
|
if (vid & 0x80)
|
|
data->has_vid5 = true;
|
|
}
|
|
|
|
if (!data->has_vid5)
|
|
data->groups[idx++] = &lm85_group_in4;
|
|
|
|
/* The EMC6D100 has 3 additional voltage inputs */
|
|
if (data->type == emc6d100)
|
|
data->groups[idx++] = &lm85_group_in567;
|
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
|
|
data, data->groups);
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
|
}
|
|
|
|
static const struct i2c_device_id lm85_id[] = {
|
|
{ "adm1027", adm1027 },
|
|
{ "adt7463", adt7463 },
|
|
{ "adt7468", adt7468 },
|
|
{ "lm85", lm85 },
|
|
{ "lm85b", lm85 },
|
|
{ "lm85c", lm85 },
|
|
{ "emc6d100", emc6d100 },
|
|
{ "emc6d101", emc6d100 },
|
|
{ "emc6d102", emc6d102 },
|
|
{ "emc6d103", emc6d103 },
|
|
{ "emc6d103s", emc6d103s },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, lm85_id);
|
|
|
|
static const struct of_device_id lm85_of_match[] = {
|
|
{
|
|
.compatible = "adi,adm1027",
|
|
.data = (void *)adm1027
|
|
},
|
|
{
|
|
.compatible = "adi,adt7463",
|
|
.data = (void *)adt7463
|
|
},
|
|
{
|
|
.compatible = "adi,adt7468",
|
|
.data = (void *)adt7468
|
|
},
|
|
{
|
|
.compatible = "national,lm85",
|
|
.data = (void *)lm85
|
|
},
|
|
{
|
|
.compatible = "national,lm85b",
|
|
.data = (void *)lm85
|
|
},
|
|
{
|
|
.compatible = "national,lm85c",
|
|
.data = (void *)lm85
|
|
},
|
|
{
|
|
.compatible = "smsc,emc6d100",
|
|
.data = (void *)emc6d100
|
|
},
|
|
{
|
|
.compatible = "smsc,emc6d101",
|
|
.data = (void *)emc6d100
|
|
},
|
|
{
|
|
.compatible = "smsc,emc6d102",
|
|
.data = (void *)emc6d102
|
|
},
|
|
{
|
|
.compatible = "smsc,emc6d103",
|
|
.data = (void *)emc6d103
|
|
},
|
|
{
|
|
.compatible = "smsc,emc6d103s",
|
|
.data = (void *)emc6d103s
|
|
},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, lm85_of_match);
|
|
|
|
static struct i2c_driver lm85_driver = {
|
|
.class = I2C_CLASS_HWMON,
|
|
.driver = {
|
|
.name = "lm85",
|
|
.of_match_table = of_match_ptr(lm85_of_match),
|
|
},
|
|
.probe = lm85_probe,
|
|
.id_table = lm85_id,
|
|
.detect = lm85_detect,
|
|
.address_list = normal_i2c,
|
|
};
|
|
|
|
module_i2c_driver(lm85_driver);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com>, "
|
|
"Margit Schubert-While <margitsw@t-online.de>, "
|
|
"Justin Thiessen <jthiessen@penguincomputing.com>");
|
|
MODULE_DESCRIPTION("LM85-B, LM85-C driver");
|