blob: 04638aee90398f44e73a620e3a3cffc9631b8d40 [file] [log] [blame]
/*
* nct6775 - Driver for the hardware monitoring functionality of
* Nuvoton NCT677x Super-I/O chips
*
* Copyright (C) 2012 Guenter Roeck <linux@roeck-us.net>
*
* Derived from w83627ehf driver
* Copyright (C) 2005-2012 Jean Delvare <khali@linux-fr.org>
* Copyright (C) 2006 Yuan Mu (Winbond),
* Rudolf Marek <r.marek@assembler.cz>
* David Hubbard <david.c.hubbard@gmail.com>
* Daniel J Blueman <daniel.blueman@gmail.com>
* Copyright (C) 2010 Sheng-Yuan Huang (Nuvoton) (PS00)
*
* Shamelessly ripped from the w83627hf driver
* Copyright (C) 2003 Mark Studebaker
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* Supports the following chips:
*
* Chip #vin #fan #pwm #temp chip IDs man ID
* nct6775f 9 4 3 6+3 0xb470 0xc1 0x5ca3
* nct6776f 9 5 3 6+3 0xc330 0xc1 0x5ca3
* nct6779d 15 5 5 2+6 0xc560 0xc1 0x5ca3
*
* #temp lists the number of monitored temperature sources (first value) plus
* the number of directly connectable temperature sensors (second value).
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/acpi.h>
#include <linux/io.h>
#include "lm75.h"
#define USE_ALTERNATE
enum kinds { nct6775, nct6776, nct6779 };
/* used to set data->name = nct6775_device_names[data->sio_kind] */
static const char * const nct6775_device_names[] = {
"nct6775",
"nct6776",
"nct6779",
};
static unsigned short force_id;
module_param(force_id, ushort, 0);
MODULE_PARM_DESC(force_id, "Override the detected device ID");
static unsigned short fan_debounce;
module_param(fan_debounce, ushort, 0);
MODULE_PARM_DESC(fan_debounce, "Enable debouncing for fan RPM signal");
#define DRVNAME "nct6775"
/*
* Super-I/O constants and functions
*/
#define NCT6775_LD_ACPI 0x0a
#define NCT6775_LD_HWM 0x0b
#define NCT6775_LD_VID 0x0d
#define SIO_REG_LDSEL 0x07 /* Logical device select */
#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
#define SIO_REG_ENABLE 0x30 /* Logical device enable */
#define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
#define SIO_NCT6775_ID 0xb470
#define SIO_NCT6776_ID 0xc330
#define SIO_NCT6779_ID 0xc560
#define SIO_ID_MASK 0xFFF0
enum pwm_enable { off, manual, thermal_cruise, speed_cruise, sf3, sf4 };
static inline void
superio_outb(int ioreg, int reg, int val)
{
outb(reg, ioreg);
outb(val, ioreg + 1);
}
static inline int
superio_inb(int ioreg, int reg)
{
outb(reg, ioreg);
return inb(ioreg + 1);
}
static inline void
superio_select(int ioreg, int ld)
{
outb(SIO_REG_LDSEL, ioreg);
outb(ld, ioreg + 1);
}
static inline int
superio_enter(int ioreg)
{
/*
* Try to reserve <ioreg> and <ioreg + 1> for exclusive access.
*/
if (!request_muxed_region(ioreg, 2, DRVNAME))
return -EBUSY;
outb(0x87, ioreg);
outb(0x87, ioreg);
return 0;
}
static inline void
superio_exit(int ioreg)
{
outb(0xaa, ioreg);
outb(0x02, ioreg);
outb(0x02, ioreg + 1);
release_region(ioreg, 2);
}
/*
* ISA constants
*/
#define IOREGION_ALIGNMENT (~7)
#define IOREGION_OFFSET 5
#define IOREGION_LENGTH 2
#define ADDR_REG_OFFSET 0
#define DATA_REG_OFFSET 1
#define NCT6775_REG_BANK 0x4E
#define NCT6775_REG_CONFIG 0x40
/*
* Not currently used:
* REG_MAN_ID has the value 0x5ca3 for all supported chips.
* REG_CHIP_ID == 0x88/0xa1/0xc1 depending on chip model.
* REG_MAN_ID is at port 0x4f
* REG_CHIP_ID is at port 0x58
*/
#define NUM_TEMP 10 /* Max number of temp attribute sets w/ limits*/
#define NUM_TEMP_FIXED 6 /* Max number of fixed temp attribute sets */
#define NUM_REG_ALARM 4 /* Max number of alarm registers */
/* Common and NCT6775 specific data */
/* Voltage min/max registers for nr=7..14 are in bank 5 */
static const u16 NCT6775_REG_IN_MAX[] = {
0x2b, 0x2d, 0x2f, 0x31, 0x33, 0x35, 0x37, 0x554, 0x556, 0x558, 0x55a,
0x55c, 0x55e, 0x560, 0x562 };
static const u16 NCT6775_REG_IN_MIN[] = {
0x2c, 0x2e, 0x30, 0x32, 0x34, 0x36, 0x38, 0x555, 0x557, 0x559, 0x55b,
0x55d, 0x55f, 0x561, 0x563 };
static const u16 NCT6775_REG_IN[] = {
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x550, 0x551, 0x552
};
#define NCT6775_REG_VBAT 0x5D
#define NCT6775_REG_DIODE 0x5E
#define NCT6775_REG_FANDIV1 0x506
#define NCT6775_REG_FANDIV2 0x507
#define NCT6775_REG_CR_FAN_DEBOUNCE 0xf0
static const u16 NCT6775_REG_ALARM[NUM_REG_ALARM] = { 0x459, 0x45A, 0x45B };
/* 0..15 voltages, 16..23 fans, 24..31 temperatures */
static const s8 NCT6775_ALARM_BITS[] = {
0, 1, 2, 3, 8, 21, 20, 16, /* in0.. in7 */
17, -1, -1, -1, -1, -1, -1, /* in8..in14 */
-1, /* unused */
6, 7, 11, 10, 23, /* fan1..fan5 */
-1, -1, -1, /* unused */
4, 5, 13, -1, -1, -1, /* temp1..temp6 */
12, -1 }; /* intrusion0, intrusion1 */
#define FAN_ALARM_BASE 16
#define TEMP_ALARM_BASE 24
#define INTRUSION_ALARM_BASE 30
static const u8 NCT6775_REG_CR_CASEOPEN_CLR[] = { 0xe6, 0xee };
static const u8 NCT6775_CR_CASEOPEN_CLR_MASK[] = { 0x20, 0x01 };
/* DC or PWM output fan configuration */
static const u8 NCT6775_REG_PWM_MODE[] = { 0x04, 0x04, 0x12 };
static const u8 NCT6775_PWM_MODE_MASK[] = { 0x01, 0x02, 0x01 };
/* Advanced Fan control, some values are common for all fans */
static const u16 NCT6775_REG_TARGET[] = { 0x101, 0x201, 0x301, 0x801, 0x901 };
static const u16 NCT6775_REG_FAN_MODE[] = { 0x102, 0x202, 0x302, 0x802, 0x902 };
static const u16 NCT6775_REG_FAN_STEP_DOWN_TIME[] = {
0x103, 0x203, 0x303, 0x803, 0x903 };
static const u16 NCT6775_REG_FAN_STEP_UP_TIME[] = {
0x104, 0x204, 0x304, 0x804, 0x904 };
static const u16 NCT6775_REG_FAN_STOP_OUTPUT[] = {
0x105, 0x205, 0x305, 0x805, 0x905 };
static const u16 NCT6775_REG_FAN_START_OUTPUT[]
= { 0x106, 0x206, 0x306, 0x806, 0x906 };
static const u16 NCT6775_REG_FAN_MAX_OUTPUT[] = { 0x10a, 0x20a, 0x30a };
static const u16 NCT6775_REG_FAN_STEP_OUTPUT[] = { 0x10b, 0x20b, 0x30b };
static const u16 NCT6775_REG_FAN_STOP_TIME[] = {
0x107, 0x207, 0x307, 0x807, 0x907 };
static const u16 NCT6775_REG_PWM[] = { 0x109, 0x209, 0x309, 0x809, 0x909 };
static const u16 NCT6775_REG_PWM_READ[] = { 0x01, 0x03, 0x11, 0x13, 0x15 };
static const u16 NCT6775_REG_FAN[] = { 0x630, 0x632, 0x634, 0x636, 0x638 };
static const u16 NCT6775_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d };
static const u16 NCT6775_REG_FAN_PULSES[] = { 0x641, 0x642, 0x643, 0x644, 0 };
static const u16 NCT6775_REG_TEMP[] = {
0x27, 0x150, 0x250, 0x62b, 0x62c, 0x62d };
static const u16 NCT6775_REG_TEMP_CONFIG[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
0, 0x152, 0x252, 0x628, 0x629, 0x62A };
static const u16 NCT6775_REG_TEMP_HYST[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
0x3a, 0x153, 0x253, 0x673, 0x678, 0x67D };
static const u16 NCT6775_REG_TEMP_OVER[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
0x39, 0x155, 0x255, 0x672, 0x677, 0x67C };
static const u16 NCT6775_REG_TEMP_SOURCE[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
0x621, 0x622, 0x623, 0x624, 0x625, 0x626 };
static const u16 NCT6775_REG_TEMP_SEL[] = {
0x100, 0x200, 0x300, 0x800, 0x900 };
static const u16 NCT6775_REG_WEIGHT_TEMP_SEL[] = {
0x139, 0x239, 0x339, 0x839, 0x939 };
static const u16 NCT6775_REG_WEIGHT_TEMP_STEP[] = {
0x13a, 0x23a, 0x33a, 0x83a, 0x93a };
static const u16 NCT6775_REG_WEIGHT_TEMP_STEP_TOL[] = {
0x13b, 0x23b, 0x33b, 0x83b, 0x93b };
static const u16 NCT6775_REG_WEIGHT_DUTY_STEP[] = {
0x13c, 0x23c, 0x33c, 0x83c, 0x93c };
static const u16 NCT6775_REG_WEIGHT_TEMP_BASE[] = {
0x13d, 0x23d, 0x33d, 0x83d, 0x93d };
static const u16 NCT6775_REG_TEMP_OFFSET[] = { 0x454, 0x455, 0x456 };
static const u16 NCT6775_REG_AUTO_TEMP[] = {
0x121, 0x221, 0x321, 0x821, 0x921 };
static const u16 NCT6775_REG_AUTO_PWM[] = {
0x127, 0x227, 0x327, 0x827, 0x927 };
#define NCT6775_AUTO_TEMP(data, nr, p) ((data)->REG_AUTO_TEMP[nr] + (p))
#define NCT6775_AUTO_PWM(data, nr, p) ((data)->REG_AUTO_PWM[nr] + (p))
static const u16 NCT6775_REG_CRITICAL_ENAB[] = { 0x134, 0x234, 0x334 };
static const u16 NCT6775_REG_CRITICAL_TEMP[] = {
0x135, 0x235, 0x335, 0x835, 0x935 };
static const u16 NCT6775_REG_CRITICAL_TEMP_TOLERANCE[] = {
0x138, 0x238, 0x338, 0x838, 0x938 };
static const char *const nct6775_temp_label[] = {
"",
"SYSTIN",
"CPUTIN",
"AUXTIN",
"AMD SB-TSI",
"PECI Agent 0",
"PECI Agent 1",
"PECI Agent 2",
"PECI Agent 3",
"PECI Agent 4",
"PECI Agent 5",
"PECI Agent 6",
"PECI Agent 7",
"PCH_CHIP_CPU_MAX_TEMP",
"PCH_CHIP_TEMP",
"PCH_CPU_TEMP",
"PCH_MCH_TEMP",
"PCH_DIM0_TEMP",
"PCH_DIM1_TEMP",
"PCH_DIM2_TEMP",
"PCH_DIM3_TEMP"
};
static const u16 NCT6775_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6775_temp_label) - 1]
= { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x661, 0x662, 0x664 };
static const u16 NCT6775_REG_TEMP_CRIT[ARRAY_SIZE(nct6775_temp_label) - 1]
= { 0, 0, 0, 0, 0xa00, 0xa01, 0xa02, 0xa03, 0xa04, 0xa05, 0xa06,
0xa07 };
/* NCT6776 specific data */
static const s8 NCT6776_ALARM_BITS[] = {
0, 1, 2, 3, 8, 21, 20, 16, /* in0.. in7 */
17, -1, -1, -1, -1, -1, -1, /* in8..in14 */
-1, /* unused */
6, 7, 11, 10, 23, /* fan1..fan5 */
-1, -1, -1, /* unused */
4, 5, 13, -1, -1, -1, /* temp1..temp6 */
12, 9 }; /* intrusion0, intrusion1 */
static const u16 NCT6776_REG_TOLERANCE_H[] = {
0x10c, 0x20c, 0x30c, 0x80c, 0x90c };
static const u8 NCT6776_REG_PWM_MODE[] = { 0x04, 0, 0 };
static const u8 NCT6776_PWM_MODE_MASK[] = { 0x01, 0, 0 };
static const u16 NCT6776_REG_FAN_MIN[] = { 0x63a, 0x63c, 0x63e, 0x640, 0x642 };
static const u16 NCT6776_REG_FAN_PULSES[] = { 0x644, 0x645, 0x646, 0, 0 };
static const u16 NCT6776_REG_WEIGHT_DUTY_BASE[] = {
0x13e, 0x23e, 0x33e, 0x83e, 0x93e };
static const u16 NCT6776_REG_TEMP_CONFIG[ARRAY_SIZE(NCT6775_REG_TEMP)] = {
0x18, 0x152, 0x252, 0x628, 0x629, 0x62A };
static const char *const nct6776_temp_label[] = {
"",
"SYSTIN",
"CPUTIN",
"AUXTIN",
"SMBUSMASTER 0",
"SMBUSMASTER 1",
"SMBUSMASTER 2",
"SMBUSMASTER 3",
"SMBUSMASTER 4",
"SMBUSMASTER 5",
"SMBUSMASTER 6",
"SMBUSMASTER 7",
"PECI Agent 0",
"PECI Agent 1",
"PCH_CHIP_CPU_MAX_TEMP",
"PCH_CHIP_TEMP",
"PCH_CPU_TEMP",
"PCH_MCH_TEMP",
"PCH_DIM0_TEMP",
"PCH_DIM1_TEMP",
"PCH_DIM2_TEMP",
"PCH_DIM3_TEMP",
"BYTE_TEMP"
};
static const u16 NCT6776_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6776_temp_label) - 1]
= { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x401, 0x402, 0x404 };
static const u16 NCT6776_REG_TEMP_CRIT[ARRAY_SIZE(nct6776_temp_label) - 1]
= { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x709, 0x70a };
/* NCT6779 specific data */
static const u16 NCT6779_REG_IN[] = {
0x480, 0x481, 0x482, 0x483, 0x484, 0x485, 0x486, 0x487,
0x488, 0x489, 0x48a, 0x48b, 0x48c, 0x48d, 0x48e };
static const u16 NCT6779_REG_ALARM[NUM_REG_ALARM] = {
0x459, 0x45A, 0x45B, 0x568 };
static const s8 NCT6779_ALARM_BITS[] = {
0, 1, 2, 3, 8, 21, 20, 16, /* in0.. in7 */
17, 24, 25, 26, 27, 28, 29, /* in8..in14 */
-1, /* unused */
6, 7, 11, 10, 23, /* fan1..fan5 */
-1, -1, -1, /* unused */
4, 5, 13, -1, -1, -1, /* temp1..temp6 */
12, 9 }; /* intrusion0, intrusion1 */
static const u16 NCT6779_REG_FAN[] = { 0x4b0, 0x4b2, 0x4b4, 0x4b6, 0x4b8 };
static const u16 NCT6779_REG_FAN_PULSES[] = {
0x644, 0x645, 0x646, 0x647, 0x648 };
static const u16 NCT6779_REG_CRITICAL_PWM_ENABLE[] = {
0x136, 0x236, 0x336, 0x836, 0x936 };
static const u16 NCT6779_REG_CRITICAL_PWM[] = {
0x137, 0x237, 0x337, 0x837, 0x937 };
static const u16 NCT6779_REG_TEMP[] = { 0x27, 0x150 };
static const u16 NCT6779_REG_TEMP_CONFIG[ARRAY_SIZE(NCT6779_REG_TEMP)] = {
0x18, 0x152 };
static const u16 NCT6779_REG_TEMP_HYST[ARRAY_SIZE(NCT6779_REG_TEMP)] = {
0x3a, 0x153 };
static const u16 NCT6779_REG_TEMP_OVER[ARRAY_SIZE(NCT6779_REG_TEMP)] = {
0x39, 0x155 };
static const u16 NCT6779_REG_TEMP_OFFSET[] = {
0x454, 0x455, 0x456, 0x44a, 0x44b, 0x44c };
static const char *const nct6779_temp_label[] = {
"",
"SYSTIN",
"CPUTIN",
"AUXTIN0",
"AUXTIN1",
"AUXTIN2",
"AUXTIN3",
"",
"SMBUSMASTER 0",
"SMBUSMASTER 1",
"SMBUSMASTER 2",
"SMBUSMASTER 3",
"SMBUSMASTER 4",
"SMBUSMASTER 5",
"SMBUSMASTER 6",
"SMBUSMASTER 7",
"PECI Agent 0",
"PECI Agent 1",
"PCH_CHIP_CPU_MAX_TEMP",
"PCH_CHIP_TEMP",
"PCH_CPU_TEMP",
"PCH_MCH_TEMP",
"PCH_DIM0_TEMP",
"PCH_DIM1_TEMP",
"PCH_DIM2_TEMP",
"PCH_DIM3_TEMP",
"BYTE_TEMP"
};
static const u16 NCT6779_REG_TEMP_ALTERNATE[ARRAY_SIZE(nct6779_temp_label) - 1]
= { 0x490, 0x491, 0x492, 0x493, 0x494, 0x495, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0x400, 0x401, 0x402, 0x404, 0x405, 0x406, 0x407,
0x408, 0 };
static const u16 NCT6779_REG_TEMP_CRIT[ARRAY_SIZE(nct6779_temp_label) - 1]
= { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x709, 0x70a };
static enum pwm_enable reg_to_pwm_enable(int pwm, int mode)
{
if (mode == 0 && pwm == 255)
return off;
return mode + 1;
}
static int pwm_enable_to_reg(enum pwm_enable mode)
{
if (mode == off)
return 0;
return mode - 1;
}
/*
* Conversions
*/
/* 1 is DC mode, output in ms */
static unsigned int step_time_from_reg(u8 reg, u8 mode)
{
return mode ? 400 * reg : 100 * reg;
}
static u8 step_time_to_reg(unsigned int msec, u8 mode)
{
return clamp_val((mode ? (msec + 200) / 400 :
(msec + 50) / 100), 1, 255);
}
static unsigned int fan_from_reg8(u16 reg, unsigned int divreg)
{
if (reg == 0 || reg == 255)
return 0;
return 1350000U / (reg << divreg);
}
static unsigned int fan_from_reg13(u16 reg, unsigned int divreg)
{
if ((reg & 0xff1f) == 0xff1f)
return 0;
reg = (reg & 0x1f) | ((reg & 0xff00) >> 3);
if (reg == 0)
return 0;
return 1350000U / reg;
}
static unsigned int fan_from_reg16(u16 reg, unsigned int divreg)
{
if (reg == 0 || reg == 0xffff)
return 0;
/*
* Even though the registers are 16 bit wide, the fan divisor
* still applies.
*/
return 1350000U / (reg << divreg);
}
static u16 fan_to_reg(u32 fan, unsigned int divreg)
{
if (!fan)
return 0;
return (1350000U / fan) >> divreg;
}
static inline unsigned int
div_from_reg(u8 reg)
{
return 1 << reg;
}
/*
* Some of the voltage inputs have internal scaling, the tables below
* contain 8 (the ADC LSB in mV) * scaling factor * 100
*/
static const u16 scale_in[15] = {
800, 800, 1600, 1600, 800, 800, 800, 1600, 1600, 800, 800, 800, 800,
800, 800
};
static inline long in_from_reg(u8 reg, u8 nr)
{
return DIV_ROUND_CLOSEST(reg * scale_in[nr], 100);
}
static inline u8 in_to_reg(u32 val, u8 nr)
{
return clamp_val(DIV_ROUND_CLOSEST(val * 100, scale_in[nr]), 0, 255);
}
/*
* Data structures and manipulation thereof
*/
struct nct6775_data {
int addr; /* IO base of hw monitor block */
enum kinds kind;
const char *name;
struct device *hwmon_dev;
u16 reg_temp[4][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
* 3=temp_crit
*/
u8 temp_src[NUM_TEMP];
u16 reg_temp_config[NUM_TEMP];
const char * const *temp_label;
int temp_label_num;
u16 REG_CONFIG;
u16 REG_VBAT;
u16 REG_DIODE;
const s8 *ALARM_BITS;
const u16 *REG_VIN;
const u16 *REG_IN_MINMAX[2];
const u16 *REG_TARGET;
const u16 *REG_FAN;
const u16 *REG_FAN_MODE;
const u16 *REG_FAN_MIN;
const u16 *REG_FAN_PULSES;
const u16 *REG_FAN_TIME[3];
const u16 *REG_TOLERANCE_H;
const u8 *REG_PWM_MODE;
const u8 *PWM_MODE_MASK;
const u16 *REG_PWM[7]; /* [0]=pwm, [1]=pwm_start, [2]=pwm_floor,
* [3]=pwm_max, [4]=pwm_step,
* [5]=weight_duty_step, [6]=weight_duty_base
*/
const u16 *REG_PWM_READ;
const u16 *REG_AUTO_TEMP;
const u16 *REG_AUTO_PWM;
const u16 *REG_CRITICAL_TEMP;
const u16 *REG_CRITICAL_TEMP_TOLERANCE;
const u16 *REG_TEMP_SOURCE; /* temp register sources */
const u16 *REG_TEMP_SEL;
const u16 *REG_WEIGHT_TEMP_SEL;
const u16 *REG_WEIGHT_TEMP[3]; /* 0=base, 1=tolerance, 2=step */
const u16 *REG_TEMP_OFFSET;
const u16 *REG_ALARM;
unsigned int (*fan_from_reg)(u16 reg, unsigned int divreg);
unsigned int (*fan_from_reg_min)(u16 reg, unsigned int divreg);
struct mutex update_lock;
bool valid; /* true if following fields are valid */
unsigned long last_updated; /* In jiffies */
/* Register values */
u8 bank; /* current register bank */
u8 in_num; /* number of in inputs we have */
u8 in[15][3]; /* [0]=in, [1]=in_max, [2]=in_min */
unsigned int rpm[5];
u16 fan_min[5];
u8 fan_pulses[5];
u8 fan_div[5];
u8 has_pwm;
u8 has_fan; /* some fan inputs can be disabled */
u8 has_fan_min; /* some fans don't have min register */
bool has_fan_div;
u8 temp_fixed_num; /* 3 or 6 */
u8 temp_type[NUM_TEMP_FIXED];
s8 temp_offset[NUM_TEMP_FIXED];
s16 temp[4][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
* 3=temp_crit */
u64 alarms;
u8 pwm_num; /* number of pwm */
u8 pwm_mode[5]; /* 1->DC variable voltage, 0->PWM variable duty cycle */
enum pwm_enable pwm_enable[5];
/* 0->off
* 1->manual
* 2->thermal cruise mode (also called SmartFan I)
* 3->fan speed cruise mode
* 4->SmartFan III
* 5->enhanced variable thermal cruise (SmartFan IV)
*/
u8 pwm[7][5]; /* [0]=pwm, [1]=pwm_start, [2]=pwm_floor,
* [3]=pwm_max, [4]=pwm_step,
* [5]=weight_duty_step, [6]=weight_duty_base
*/
u8 target_temp[5];
u8 target_temp_mask;
u32 target_speed[5];
u32 target_speed_tolerance[5];
u8 speed_tolerance_limit;
u8 temp_tolerance[2][5];
u8 tolerance_mask;
u8 fan_time[3][5]; /* 0 = stop_time, 1 = step_up, 2 = step_down */
/* Automatic fan speed control registers */
int auto_pwm_num;
u8 auto_pwm[5][7];
u8 auto_temp[5][7];
u8 pwm_temp_sel[5];
u8 pwm_weight_temp_sel[5];
u8 weight_temp[3][5]; /* 0->temp_step, 1->temp_step_tol,
* 2->temp_base
*/
u8 vid;
u8 vrm;
u16 have_temp;
u16 have_temp_fixed;
u16 have_in;
#ifdef CONFIG_PM
/* Remember extra register values over suspend/resume */
u8 vbat;
u8 fandiv1;
u8 fandiv2;
#endif
};
struct nct6775_sio_data {
int sioreg;
enum kinds kind;
};
static bool is_word_sized(struct nct6775_data *data, u16 reg)
{
switch (data->kind) {
case nct6775:
return (((reg & 0xff00) == 0x100 ||
(reg & 0xff00) == 0x200) &&
((reg & 0x00ff) == 0x50 ||
(reg & 0x00ff) == 0x53 ||
(reg & 0x00ff) == 0x55)) ||
(reg & 0xfff0) == 0x630 ||
reg == 0x640 || reg == 0x642 ||
reg == 0x662 ||
((reg & 0xfff0) == 0x650 && (reg & 0x000f) >= 0x06) ||
reg == 0x73 || reg == 0x75 || reg == 0x77;
case nct6776:
return (((reg & 0xff00) == 0x100 ||
(reg & 0xff00) == 0x200) &&
((reg & 0x00ff) == 0x50 ||
(reg & 0x00ff) == 0x53 ||
(reg & 0x00ff) == 0x55)) ||
(reg & 0xfff0) == 0x630 ||
reg == 0x402 ||
reg == 0x640 || reg == 0x642 ||
((reg & 0xfff0) == 0x650 && (reg & 0x000f) >= 0x06) ||
reg == 0x73 || reg == 0x75 || reg == 0x77;
case nct6779:
return reg == 0x150 || reg == 0x153 || reg == 0x155 ||
((reg & 0xfff0) == 0x4b0 && (reg & 0x000f) < 0x09) ||
reg == 0x402 ||
reg == 0x63a || reg == 0x63c || reg == 0x63e ||
reg == 0x640 || reg == 0x642 ||
reg == 0x73 || reg == 0x75 || reg == 0x77 || reg == 0x79 ||
reg == 0x7b;
}
return false;
}
/*
* On older chips, only registers 0x50-0x5f are banked.
* On more recent chips, all registers are banked.
* Assume that is the case and set the bank number for each access.
* Cache the bank number so it only needs to be set if it changes.
*/
static inline void nct6775_set_bank(struct nct6775_data *data, u16 reg)
{
u8 bank = reg >> 8;
if (data->bank != bank) {
outb_p(NCT6775_REG_BANK, data->addr + ADDR_REG_OFFSET);
outb_p(bank, data->addr + DATA_REG_OFFSET);
data->bank = bank;
}
}
static u16 nct6775_read_value(struct nct6775_data *data, u16 reg)
{
int res, word_sized = is_word_sized(data, reg);
nct6775_set_bank(data, reg);
outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
res = inb_p(data->addr + DATA_REG_OFFSET);
if (word_sized) {
outb_p((reg & 0xff) + 1,
data->addr + ADDR_REG_OFFSET);
res = (res << 8) + inb_p(data->addr + DATA_REG_OFFSET);
}
return res;
}
static int nct6775_write_value(struct nct6775_data *data, u16 reg, u16 value)
{
int word_sized = is_word_sized(data, reg);
nct6775_set_bank(data, reg);
outb_p(reg & 0xff, data->addr + ADDR_REG_OFFSET);
if (word_sized) {
outb_p(value >> 8, data->addr + DATA_REG_OFFSET);
outb_p((reg & 0xff) + 1,
data->addr + ADDR_REG_OFFSET);
}
outb_p(value & 0xff, data->addr + DATA_REG_OFFSET);
return 0;
}
/* We left-align 8-bit temperature values to make the code simpler */
static u16 nct6775_read_temp(struct nct6775_data *data, u16 reg)
{
u16 res;
res = nct6775_read_value(data, reg);
if (!is_word_sized(data, reg))
res <<= 8;
return res;
}
static int nct6775_write_temp(struct nct6775_data *data, u16 reg, u16 value)
{
if (!is_word_sized(data, reg))
value >>= 8;
return nct6775_write_value(data, reg, value);
}
/* This function assumes that the caller holds data->update_lock */
static void nct6775_write_fan_div(struct nct6775_data *data, int nr)
{
u8 reg;
switch (nr) {
case 0:
reg = (nct6775_read_value(data, NCT6775_REG_FANDIV1) & 0x70)
| (data->fan_div[0] & 0x7);
nct6775_write_value(data, NCT6775_REG_FANDIV1, reg);
break;
case 1:
reg = (nct6775_read_value(data, NCT6775_REG_FANDIV1) & 0x7)
| ((data->fan_div[1] << 4) & 0x70);
nct6775_write_value(data, NCT6775_REG_FANDIV1, reg);
break;
case 2:
reg = (nct6775_read_value(data, NCT6775_REG_FANDIV2) & 0x70)
| (data->fan_div[2] & 0x7);
nct6775_write_value(data, NCT6775_REG_FANDIV2, reg);
break;
case 3:
reg = (nct6775_read_value(data, NCT6775_REG_FANDIV2) & 0x7)
| ((data->fan_div[3] << 4) & 0x70);
nct6775_write_value(data, NCT6775_REG_FANDIV2, reg);
break;
}
}
static void nct6775_write_fan_div_common(struct nct6775_data *data, int nr)
{
if (data->kind == nct6775)
nct6775_write_fan_div(data, nr);
}
static void nct6775_update_fan_div(struct nct6775_data *data)
{
u8 i;
i = nct6775_read_value(data, NCT6775_REG_FANDIV1);
data->fan_div[0] = i & 0x7;
data->fan_div[1] = (i & 0x70) >> 4;
i = nct6775_read_value(data, NCT6775_REG_FANDIV2);
data->fan_div[2] = i & 0x7;
if (data->has_fan & (1 << 3))
data->fan_div[3] = (i & 0x70) >> 4;
}
static void nct6775_update_fan_div_common(struct nct6775_data *data)
{
if (data->kind == nct6775)
nct6775_update_fan_div(data);
}
static void nct6775_init_fan_div(struct nct6775_data *data)
{
int i;
nct6775_update_fan_div_common(data);
/*
* For all fans, start with highest divider value if the divider
* register is not initialized. This ensures that we get a
* reading from the fan count register, even if it is not optimal.
* We'll compute a better divider later on.
*/
for (i = 0; i < ARRAY_SIZE(data->fan_div); i++) {
if (!(data->has_fan & (1 << i)))
continue;
if (data->fan_div[i] == 0) {
data->fan_div[i] = 7;
nct6775_write_fan_div_common(data, i);
}
}
}
static void nct6775_init_fan_common(struct device *dev,
struct nct6775_data *data)
{
int i;
u8 reg;
if (data->has_fan_div)
nct6775_init_fan_div(data);
/*
* If fan_min is not set (0), set it to 0xff to disable it. This
* prevents the unnecessary warning when fanX_min is reported as 0.
*/
for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
if (data->has_fan_min & (1 << i)) {
reg = nct6775_read_value(data, data->REG_FAN_MIN[i]);
if (!reg)
nct6775_write_value(data, data->REG_FAN_MIN[i],
data->has_fan_div ? 0xff
: 0xff1f);
}
}
}
static void nct6775_select_fan_div(struct device *dev,
struct nct6775_data *data, int nr, u16 reg)
{
u8 fan_div = data->fan_div[nr];
u16 fan_min;
if (!data->has_fan_div)
return;
/*
* If we failed to measure the fan speed, or the reported value is not
* in the optimal range, and the clock divider can be modified,
* let's try that for next time.
*/
if (reg == 0x00 && fan_div < 0x07)
fan_div++;
else if (reg != 0x00 && reg < 0x30 && fan_div > 0)
fan_div--;
if (fan_div != data->fan_div[nr]) {
dev_dbg(dev, "Modifying fan%d clock divider from %u to %u\n",
nr + 1, div_from_reg(data->fan_div[nr]),
div_from_reg(fan_div));
/* Preserve min limit if possible */
if (data->has_fan_min & (1 << nr)) {
fan_min = data->fan_min[nr];
if (fan_div > data->fan_div[nr]) {
if (fan_min != 255 && fan_min > 1)
fan_min >>= 1;
} else {
if (fan_min != 255) {
fan_min <<= 1;
if (fan_min > 254)
fan_min = 254;
}
}
if (fan_min != data->fan_min[nr]) {
data->fan_min[nr] = fan_min;
nct6775_write_value(data, data->REG_FAN_MIN[nr],
fan_min);
}
}
data->fan_div[nr] = fan_div;
nct6775_write_fan_div_common(data, nr);
}
}
static void nct6775_update_pwm(struct device *dev)
{
struct nct6775_data *data = dev_get_drvdata(dev);
int i, j;
int fanmodecfg, reg;
bool duty_is_dc;
for (i = 0; i < data->pwm_num; i++) {
if (!(data->has_pwm & (1 << i)))
continue;
duty_is_dc = data->REG_PWM_MODE[i] &&
(nct6775_read_value(data, data->REG_PWM_MODE[i])
& data->PWM_MODE_MASK[i]);
data->pwm_mode[i] = duty_is_dc;
fanmodecfg = nct6775_read_value(data, data->REG_FAN_MODE[i]);
for (j = 0; j < ARRAY_SIZE(data->REG_PWM); j++) {
if (data->REG_PWM[j] && data->REG_PWM[j][i]) {
data->pwm[j][i]
= nct6775_read_value(data,
data->REG_PWM[j][i]);
}
}
data->pwm_enable[i] = reg_to_pwm_enable(data->pwm[0][i],
(fanmodecfg >> 4) & 7);
if (!data->temp_tolerance[0][i] ||
data->pwm_enable[i] != speed_cruise)
data->temp_tolerance[0][i] = fanmodecfg & 0x0f;
if (!data->target_speed_tolerance[i] ||
data->pwm_enable[i] == speed_cruise) {
u8 t = fanmodecfg & 0x0f;
if (data->REG_TOLERANCE_H) {
t |= (nct6775_read_value(data,
data->REG_TOLERANCE_H[i]) & 0x70) >> 1;
}
data->target_speed_tolerance[i] = t;
}
data->temp_tolerance[1][i] =
nct6775_read_value(data,
data->REG_CRITICAL_TEMP_TOLERANCE[i]);
reg = nct6775_read_value(data, data->REG_TEMP_SEL[i]);
data->pwm_temp_sel[i] = reg & 0x1f;
/* If fan can stop, report floor as 0 */
if (reg & 0x80)
data->pwm[2][i] = 0;
reg = nct6775_read_value(data, data->REG_WEIGHT_TEMP_SEL[i]);
data->pwm_weight_temp_sel[i] = reg & 0x1f;
/* If weight is disabled, report weight source as 0 */
if (j == 1 && !(reg & 0x80))
data->pwm_weight_temp_sel[i] = 0;
/* Weight temp data */
for (j = 0; j < ARRAY_SIZE(data->weight_temp); j++) {
data->weight_temp[j][i]
= nct6775_read_value(data,
data->REG_WEIGHT_TEMP[j][i]);
}
}
}
static void nct6775_update_pwm_limits(struct device *dev)
{
struct nct6775_data *data = dev_get_drvdata(dev);
int i, j;
u8 reg;
u16 reg_t;
for (i = 0; i < data->pwm_num; i++) {
if (!(data->has_pwm & (1 << i)))
continue;
for (j = 0; j < ARRAY_SIZE(data->fan_time); j++) {
data->fan_time[j][i] =
nct6775_read_value(data, data->REG_FAN_TIME[j][i]);
}
reg_t = nct6775_read_value(data, data->REG_TARGET[i]);
/* Update only in matching mode or if never updated */
if (!data->target_temp[i] ||
data->pwm_enable[i] == thermal_cruise)
data->target_temp[i] = reg_t & data->target_temp_mask;
if (!data->target_speed[i] ||
data->pwm_enable[i] == speed_cruise) {
if (data->REG_TOLERANCE_H) {
reg_t |= (nct6775_read_value(data,
data->REG_TOLERANCE_H[i]) & 0x0f) << 8;
}
data->target_speed[i] = reg_t;
}
for (j = 0; j < data->auto_pwm_num; j++) {
data->auto_pwm[i][j] =
nct6775_read_value(data,
NCT6775_AUTO_PWM(data, i, j));
data->auto_temp[i][j] =
nct6775_read_value(data,
NCT6775_AUTO_TEMP(data, i, j));
}
/* critical auto_pwm temperature data */
data->auto_temp[i][data->auto_pwm_num] =
nct6775_read_value(data, data->REG_CRITICAL_TEMP[i]);
switch (data->kind) {
case nct6775:
reg = nct6775_read_value(data,
NCT6775_REG_CRITICAL_ENAB[i]);
data->auto_pwm[i][data->auto_pwm_num] =
(reg & 0x02) ? 0xff : 0x00;
break;
case nct6776:
data->auto_pwm[i][data->auto_pwm_num] = 0xff;
break;
case nct6779:
reg = nct6775_read_value(data,
NCT6779_REG_CRITICAL_PWM_ENABLE[i]);
if (reg & 1)
data->auto_pwm[i][data->auto_pwm_num] =
nct6775_read_value(data,
NCT6779_REG_CRITICAL_PWM[i]);
else
data->auto_pwm[i][data->auto_pwm_num] = 0xff;
break;
}
}
}
static struct nct6775_data *nct6775_update_device(struct device *dev)
{
struct nct6775_data *data = dev_get_drvdata(dev);
int i, j;
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|| !data->valid) {
/* Fan clock dividers */
nct6775_update_fan_div_common(data);
/* Measured voltages and limits */
for (i = 0; i < data->in_num; i++) {
if (!(data->have_in & (1 << i)))
continue;
data->in[i][0] = nct6775_read_value(data,
data->REG_VIN[i]);
data->in[i][1] = nct6775_read_value(data,
data->REG_IN_MINMAX[0][i]);
data->in[i][2] = nct6775_read_value(data,
data->REG_IN_MINMAX[1][i]);
}
/* Measured fan speeds and limits */
for (i = 0; i < ARRAY_SIZE(data->rpm); i++) {
u16 reg;
if (!(data->has_fan & (1 << i)))
continue;
reg = nct6775_read_value(data, data->REG_FAN[i]);
data->rpm[i] = data->fan_from_reg(reg,
data->fan_div[i]);
if (data->has_fan_min & (1 << i))
data->fan_min[i] = nct6775_read_value(data,
data->REG_FAN_MIN[i]);
data->fan_pulses[i] =
nct6775_read_value(data, data->REG_FAN_PULSES[i]);
nct6775_select_fan_div(dev, data, i, reg);
}
nct6775_update_pwm(dev);
nct6775_update_pwm_limits(dev);
/* Measured temperatures and limits */
for (i = 0; i < NUM_TEMP; i++) {
if (!(data->have_temp & (1 << i)))
continue;
for (j = 0; j < ARRAY_SIZE(data->reg_temp); j++) {
if (data->reg_temp[j][i])
data->temp[j][i]
= nct6775_read_temp(data,
data->reg_temp[j][i]);
}
if (!(data->have_temp_fixed & (1 << i)))
continue;
data->temp_offset[i]
= nct6775_read_value(data, data->REG_TEMP_OFFSET[i]);
}
data->alarms = 0;
for (i = 0; i < NUM_REG_ALARM; i++) {
u8 alarm;
if (!data->REG_ALARM[i])
continue;
alarm = nct6775_read_value(data, data->REG_ALARM[i]);
data->alarms |= ((u64)alarm) << (i << 3);
}
data->last_updated = jiffies;
data->valid = true;
}
mutex_unlock(&data->update_lock);
return data;
}
/*
* Sysfs callback functions
*/
static ssize_t
show_in_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
int nr = sattr->nr;
int index = sattr->index;
return sprintf(buf, "%ld\n", in_from_reg(data->in[nr][index], nr));
}
static ssize_t
store_in_reg(struct device *dev, struct device_attribute *attr, const char *buf,
size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
int nr = sattr->nr;
int index = sattr->index;
unsigned long val;
int err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
mutex_lock(&data->update_lock);
data->in[nr][index] = in_to_reg(val, nr);
nct6775_write_value(data, data->REG_IN_MINMAX[index - 1][nr],
data->in[nr][index]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_alarm(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = data->ALARM_BITS[sattr->index];
return sprintf(buf, "%u\n",
(unsigned int)((data->alarms >> nr) & 0x01));
}
static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in_reg, NULL, 0, 0);
static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in_reg, NULL, 1, 0);
static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in_reg, NULL, 2, 0);
static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in_reg, NULL, 3, 0);
static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in_reg, NULL, 4, 0);
static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in_reg, NULL, 5, 0);
static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in_reg, NULL, 6, 0);
static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in_reg, NULL, 7, 0);
static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in_reg, NULL, 8, 0);
static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in_reg, NULL, 9, 0);
static SENSOR_DEVICE_ATTR_2(in10_input, S_IRUGO, show_in_reg, NULL, 10, 0);
static SENSOR_DEVICE_ATTR_2(in11_input, S_IRUGO, show_in_reg, NULL, 11, 0);
static SENSOR_DEVICE_ATTR_2(in12_input, S_IRUGO, show_in_reg, NULL, 12, 0);
static SENSOR_DEVICE_ATTR_2(in13_input, S_IRUGO, show_in_reg, NULL, 13, 0);
static SENSOR_DEVICE_ATTR_2(in14_input, S_IRUGO, show_in_reg, NULL, 14, 0);
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, 4);
static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6);
static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7);
static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 8);
static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 9);
static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL, 10);
static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL, 11);
static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL, 12);
static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL, 13);
static SENSOR_DEVICE_ATTR(in14_alarm, S_IRUGO, show_alarm, NULL, 14);
static SENSOR_DEVICE_ATTR_2(in0_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 0, 1);
static SENSOR_DEVICE_ATTR_2(in1_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 1, 1);
static SENSOR_DEVICE_ATTR_2(in2_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 2, 1);
static SENSOR_DEVICE_ATTR_2(in3_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 3, 1);
static SENSOR_DEVICE_ATTR_2(in4_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 4, 1);
static SENSOR_DEVICE_ATTR_2(in5_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 5, 1);
static SENSOR_DEVICE_ATTR_2(in6_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 6, 1);
static SENSOR_DEVICE_ATTR_2(in7_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 7, 1);
static SENSOR_DEVICE_ATTR_2(in8_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 8, 1);
static SENSOR_DEVICE_ATTR_2(in9_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 9, 1);
static SENSOR_DEVICE_ATTR_2(in10_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 10, 1);
static SENSOR_DEVICE_ATTR_2(in11_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 11, 1);
static SENSOR_DEVICE_ATTR_2(in12_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 12, 1);
static SENSOR_DEVICE_ATTR_2(in13_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 13, 1);
static SENSOR_DEVICE_ATTR_2(in14_min, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 14, 1);
static SENSOR_DEVICE_ATTR_2(in0_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 0, 2);
static SENSOR_DEVICE_ATTR_2(in1_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 1, 2);
static SENSOR_DEVICE_ATTR_2(in2_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 2, 2);
static SENSOR_DEVICE_ATTR_2(in3_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 3, 2);
static SENSOR_DEVICE_ATTR_2(in4_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 4, 2);
static SENSOR_DEVICE_ATTR_2(in5_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 5, 2);
static SENSOR_DEVICE_ATTR_2(in6_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 6, 2);
static SENSOR_DEVICE_ATTR_2(in7_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 7, 2);
static SENSOR_DEVICE_ATTR_2(in8_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 8, 2);
static SENSOR_DEVICE_ATTR_2(in9_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 9, 2);
static SENSOR_DEVICE_ATTR_2(in10_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 10, 2);
static SENSOR_DEVICE_ATTR_2(in11_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 11, 2);
static SENSOR_DEVICE_ATTR_2(in12_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 12, 2);
static SENSOR_DEVICE_ATTR_2(in13_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 13, 2);
static SENSOR_DEVICE_ATTR_2(in14_max, S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 14, 2);
static struct attribute *nct6775_attributes_in[15][5] = {
{
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in0_min.dev_attr.attr,
&sensor_dev_attr_in0_max.dev_attr.attr,
&sensor_dev_attr_in0_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in1_min.dev_attr.attr,
&sensor_dev_attr_in1_max.dev_attr.attr,
&sensor_dev_attr_in1_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in2_input.dev_attr.attr,
&sensor_dev_attr_in2_min.dev_attr.attr,
&sensor_dev_attr_in2_max.dev_attr.attr,
&sensor_dev_attr_in2_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_in3_min.dev_attr.attr,
&sensor_dev_attr_in3_max.dev_attr.attr,
&sensor_dev_attr_in3_alarm.dev_attr.attr,
NULL
},
{
&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
},
{
&sensor_dev_attr_in5_input.dev_attr.attr,
&sensor_dev_attr_in5_min.dev_attr.attr,
&sensor_dev_attr_in5_max.dev_attr.attr,
&sensor_dev_attr_in5_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in6_input.dev_attr.attr,
&sensor_dev_attr_in6_min.dev_attr.attr,
&sensor_dev_attr_in6_max.dev_attr.attr,
&sensor_dev_attr_in6_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in7_input.dev_attr.attr,
&sensor_dev_attr_in7_min.dev_attr.attr,
&sensor_dev_attr_in7_max.dev_attr.attr,
&sensor_dev_attr_in7_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in8_input.dev_attr.attr,
&sensor_dev_attr_in8_min.dev_attr.attr,
&sensor_dev_attr_in8_max.dev_attr.attr,
&sensor_dev_attr_in8_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in9_input.dev_attr.attr,
&sensor_dev_attr_in9_min.dev_attr.attr,
&sensor_dev_attr_in9_max.dev_attr.attr,
&sensor_dev_attr_in9_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in10_input.dev_attr.attr,
&sensor_dev_attr_in10_min.dev_attr.attr,
&sensor_dev_attr_in10_max.dev_attr.attr,
&sensor_dev_attr_in10_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in11_input.dev_attr.attr,
&sensor_dev_attr_in11_min.dev_attr.attr,
&sensor_dev_attr_in11_max.dev_attr.attr,
&sensor_dev_attr_in11_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in12_input.dev_attr.attr,
&sensor_dev_attr_in12_min.dev_attr.attr,
&sensor_dev_attr_in12_max.dev_attr.attr,
&sensor_dev_attr_in12_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in13_input.dev_attr.attr,
&sensor_dev_attr_in13_min.dev_attr.attr,
&sensor_dev_attr_in13_max.dev_attr.attr,
&sensor_dev_attr_in13_alarm.dev_attr.attr,
NULL
},
{
&sensor_dev_attr_in14_input.dev_attr.attr,
&sensor_dev_attr_in14_min.dev_attr.attr,
&sensor_dev_attr_in14_max.dev_attr.attr,
&sensor_dev_attr_in14_alarm.dev_attr.attr,
NULL
},
};
static const struct attribute_group nct6775_group_in[15] = {
{ .attrs = nct6775_attributes_in[0] },
{ .attrs = nct6775_attributes_in[1] },
{ .attrs = nct6775_attributes_in[2] },
{ .attrs = nct6775_attributes_in[3] },
{ .attrs = nct6775_attributes_in[4] },
{ .attrs = nct6775_attributes_in[5] },
{ .attrs = nct6775_attributes_in[6] },
{ .attrs = nct6775_attributes_in[7] },
{ .attrs = nct6775_attributes_in[8] },
{ .attrs = nct6775_attributes_in[9] },
{ .attrs = nct6775_attributes_in[10] },
{ .attrs = nct6775_attributes_in[11] },
{ .attrs = nct6775_attributes_in[12] },
{ .attrs = nct6775_attributes_in[13] },
{ .attrs = nct6775_attributes_in[14] },
};
static ssize_t
show_fan(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
return sprintf(buf, "%d\n", data->rpm[nr]);
}
static ssize_t
show_fan_min(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
return sprintf(buf, "%d\n",
data->fan_from_reg_min(data->fan_min[nr],
data->fan_div[nr]));
}
static ssize_t
show_fan_div(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr]));
}
static ssize_t
store_fan_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err;
unsigned int reg;
u8 new_div;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
mutex_lock(&data->update_lock);
if (!data->has_fan_div) {
/* NCT6776F or NCT6779D; we know this is a 13 bit register */
if (!val) {
val = 0xff1f;
} else {
if (val > 1350000U)
val = 135000U;
val = 1350000U / val;
val = (val & 0x1f) | ((val << 3) & 0xff00);
}
data->fan_min[nr] = val;
goto write_min; /* Leave fan divider alone */
}
if (!val) {
/* No min limit, alarm disabled */
data->fan_min[nr] = 255;
new_div = data->fan_div[nr]; /* No change */
dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1);
goto write_div;
}
reg = 1350000U / val;
if (reg >= 128 * 255) {
/*
* Speed below this value cannot possibly be represented,
* even with the highest divider (128)
*/
data->fan_min[nr] = 254;
new_div = 7; /* 128 == (1 << 7) */
dev_warn(dev,
"fan%u low limit %lu below minimum %u, set to minimum\n",
nr + 1, val, data->fan_from_reg_min(254, 7));
} else if (!reg) {
/*
* Speed above this value cannot possibly be represented,
* even with the lowest divider (1)
*/
data->fan_min[nr] = 1;
new_div = 0; /* 1 == (1 << 0) */
dev_warn(dev,
"fan%u low limit %lu above maximum %u, set to maximum\n",
nr + 1, val, data->fan_from_reg_min(1, 0));
} else {
/*
* Automatically pick the best divider, i.e. the one such
* that the min limit will correspond to a register value
* in the 96..192 range
*/
new_div = 0;
while (reg > 192 && new_div < 7) {
reg >>= 1;
new_div++;
}
data->fan_min[nr] = reg;
}
write_div:
/*
* Write both the fan clock divider (if it changed) and the new
* fan min (unconditionally)
*/
if (new_div != data->fan_div[nr]) {
dev_dbg(dev, "fan%u clock divider changed from %u to %u\n",
nr + 1, div_from_reg(data->fan_div[nr]),
div_from_reg(new_div));
data->fan_div[nr] = new_div;
nct6775_write_fan_div_common(data, nr);
/* Give the chip time to sample a new speed value */
data->last_updated = jiffies;
}
write_min:
nct6775_write_value(data, data->REG_FAN_MIN[nr], data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_fan_pulses(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int p = data->fan_pulses[sattr->index];
return sprintf(buf, "%d\n", p ? : 4);
}
static ssize_t
store_fan_pulses(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (val > 4)
return -EINVAL;
mutex_lock(&data->update_lock);
data->fan_pulses[nr] = val & 3;
nct6775_write_value(data, data->REG_FAN_PULSES[nr], val & 3);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute sda_fan_input[] = {
SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
};
static struct sensor_device_attribute sda_fan_alarm[] = {
SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, FAN_ALARM_BASE),
SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, FAN_ALARM_BASE + 1),
SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, FAN_ALARM_BASE + 2),
SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, FAN_ALARM_BASE + 3),
SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, FAN_ALARM_BASE + 4),
};
static struct sensor_device_attribute sda_fan_min[] = {
SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
store_fan_min, 0),
SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
store_fan_min, 1),
SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
store_fan_min, 2),
SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
store_fan_min, 3),
SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
store_fan_min, 4),
};
static struct sensor_device_attribute sda_fan_pulses[] = {
SENSOR_ATTR(fan1_pulses, S_IWUSR | S_IRUGO, show_fan_pulses,
store_fan_pulses, 0),
SENSOR_ATTR(fan2_pulses, S_IWUSR | S_IRUGO, show_fan_pulses,
store_fan_pulses, 1),
SENSOR_ATTR(fan3_pulses, S_IWUSR | S_IRUGO, show_fan_pulses,
store_fan_pulses, 2),
SENSOR_ATTR(fan4_pulses, S_IWUSR | S_IRUGO, show_fan_pulses,
store_fan_pulses, 3),
SENSOR_ATTR(fan5_pulses, S_IWUSR | S_IRUGO, show_fan_pulses,
store_fan_pulses, 4),
};
static struct sensor_device_attribute sda_fan_div[] = {
SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3),
SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4),
};
static ssize_t
show_temp_label(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
return sprintf(buf, "%s\n", data->temp_label[data->temp_src[nr]]);
}
static ssize_t
show_temp(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
int nr = sattr->nr;
int index = sattr->index;
return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->temp[index][nr]));
}
static ssize_t
store_temp(struct device *dev, struct device_attribute *attr, const char *buf,
size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
int nr = sattr->nr;
int index = sattr->index;
int err;
long val;
err = kstrtol(buf, 10, &val);
if (err < 0)
return err;
mutex_lock(&data->update_lock);
data->temp[index][nr] = LM75_TEMP_TO_REG(val);
nct6775_write_temp(data, data->reg_temp[index][nr],
data->temp[index][nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_temp_offset(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
return sprintf(buf, "%d\n", data->temp_offset[sattr->index] * 1000);
}
static ssize_t
store_temp_offset(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err < 0)
return err;
val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
mutex_lock(&data->update_lock);
data->temp_offset[nr] = val;
nct6775_write_value(data, data->REG_TEMP_OFFSET[nr], val);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_temp_type(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
return sprintf(buf, "%d\n", (int)data->temp_type[nr]);
}
static ssize_t
store_temp_type(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err;
u8 vbat, diode, bit;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (val != 1 && val != 3 && val != 4)
return -EINVAL;
mutex_lock(&data->update_lock);
data->temp_type[nr] = val;
vbat = nct6775_read_value(data, data->REG_VBAT) & ~(0x02 << nr);
diode = nct6775_read_value(data, data->REG_DIODE) & ~(0x02 << nr);
bit = 0x02 << nr;
switch (val) {
case 1: /* CPU diode (diode, current mode) */
vbat |= bit;
diode |= bit;
break;
case 3: /* diode, voltage mode */
vbat |= bit;
break;
case 4: /* thermistor */
break;
}
nct6775_write_value(data, data->REG_VBAT, vbat);
nct6775_write_value(data, data->REG_DIODE, diode);
mutex_unlock(&data->update_lock);
return count;
}
static struct sensor_device_attribute_2 sda_temp_input[] = {
SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0),
SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0),
SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0),
SENSOR_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, 0),
SENSOR_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, 0),
SENSOR_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, 0),
SENSOR_ATTR_2(temp7_input, S_IRUGO, show_temp, NULL, 6, 0),
SENSOR_ATTR_2(temp8_input, S_IRUGO, show_temp, NULL, 7, 0),
SENSOR_ATTR_2(temp9_input, S_IRUGO, show_temp, NULL, 8, 0),
SENSOR_ATTR_2(temp10_input, S_IRUGO, show_temp, NULL, 9, 0),
};
static struct sensor_device_attribute sda_temp_label[] = {
SENSOR_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0),
SENSOR_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1),
SENSOR_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2),
SENSOR_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3),
SENSOR_ATTR(temp5_label, S_IRUGO, show_temp_label, NULL, 4),
SENSOR_ATTR(temp6_label, S_IRUGO, show_temp_label, NULL, 5),
SENSOR_ATTR(temp7_label, S_IRUGO, show_temp_label, NULL, 6),
SENSOR_ATTR(temp8_label, S_IRUGO, show_temp_label, NULL, 7),
SENSOR_ATTR(temp9_label, S_IRUGO, show_temp_label, NULL, 8),
SENSOR_ATTR(temp10_label, S_IRUGO, show_temp_label, NULL, 9),
};
static struct sensor_device_attribute_2 sda_temp_max[] = {
SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
0, 1),
SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
1, 1),
SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
2, 1),
SENSOR_ATTR_2(temp4_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
3, 1),
SENSOR_ATTR_2(temp5_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
4, 1),
SENSOR_ATTR_2(temp6_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
5, 1),
SENSOR_ATTR_2(temp7_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
6, 1),
SENSOR_ATTR_2(temp8_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
7, 1),
SENSOR_ATTR_2(temp9_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
8, 1),
SENSOR_ATTR_2(temp10_max, S_IRUGO | S_IWUSR, show_temp, store_temp,
9, 1),
};
static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
0, 2),
SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
1, 2),
SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
2, 2),
SENSOR_ATTR_2(temp4_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
3, 2),
SENSOR_ATTR_2(temp5_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
4, 2),
SENSOR_ATTR_2(temp6_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
5, 2),
SENSOR_ATTR_2(temp7_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
6, 2),
SENSOR_ATTR_2(temp8_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
7, 2),
SENSOR_ATTR_2(temp9_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
8, 2),
SENSOR_ATTR_2(temp10_max_hyst, S_IRUGO | S_IWUSR, show_temp, store_temp,
9, 2),
};
static struct sensor_device_attribute_2 sda_temp_crit[] = {
SENSOR_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
0, 3),
SENSOR_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
1, 3),
SENSOR_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
2, 3),
SENSOR_ATTR_2(temp4_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
3, 3),
SENSOR_ATTR_2(temp5_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
4, 3),
SENSOR_ATTR_2(temp6_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
5, 3),
SENSOR_ATTR_2(temp7_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
6, 3),
SENSOR_ATTR_2(temp8_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
7, 3),
SENSOR_ATTR_2(temp9_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
8, 3),
SENSOR_ATTR_2(temp10_crit, S_IRUGO | S_IWUSR, show_temp, store_temp,
9, 3),
};
static struct sensor_device_attribute sda_temp_offset[] = {
SENSOR_ATTR(temp1_offset, S_IRUGO | S_IWUSR, show_temp_offset,
store_temp_offset, 0),
SENSOR_ATTR(temp2_offset, S_IRUGO | S_IWUSR, show_temp_offset,
store_temp_offset, 1),
SENSOR_ATTR(temp3_offset, S_IRUGO | S_IWUSR, show_temp_offset,
store_temp_offset, 2),
SENSOR_ATTR(temp4_offset, S_IRUGO | S_IWUSR, show_temp_offset,
store_temp_offset, 3),
SENSOR_ATTR(temp5_offset, S_IRUGO | S_IWUSR, show_temp_offset,
store_temp_offset, 4),
SENSOR_ATTR(temp6_offset, S_IRUGO | S_IWUSR, show_temp_offset,
store_temp_offset, 5),
};
static struct sensor_device_attribute sda_temp_type[] = {
SENSOR_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
store_temp_type, 0),
SENSOR_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
store_temp_type, 1),
SENSOR_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
store_temp_type, 2),
SENSOR_ATTR(temp4_type, S_IRUGO | S_IWUSR, show_temp_type,
store_temp_type, 3),
SENSOR_ATTR(temp5_type, S_IRUGO | S_IWUSR, show_temp_type,
store_temp_type, 4),
SENSOR_ATTR(temp6_type, S_IRUGO | S_IWUSR, show_temp_type,
store_temp_type, 5),
};
static struct sensor_device_attribute sda_temp_alarm[] = {
SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL,
TEMP_ALARM_BASE),
SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL,
TEMP_ALARM_BASE + 1),
SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL,
TEMP_ALARM_BASE + 2),
SENSOR_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL,
TEMP_ALARM_BASE + 3),
SENSOR_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL,
TEMP_ALARM_BASE + 4),
SENSOR_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL,
TEMP_ALARM_BASE + 5),
};
#define NUM_TEMP_ALARM ARRAY_SIZE(sda_temp_alarm)
static ssize_t
show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
return sprintf(buf, "%d\n", !data->pwm_mode[sattr->index]);
}
static ssize_t
store_pwm_mode(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err;
u8 reg;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (val > 1)
return -EINVAL;
/* Setting DC mode is not supported for all chips/channels */
if (data->REG_PWM_MODE[nr] == 0) {
if (val)
return -EINVAL;
return count;
}
mutex_lock(&data->update_lock);
data->pwm_mode[nr] = val;
reg = nct6775_read_value(data, data->REG_PWM_MODE[nr]);
reg &= ~data->PWM_MODE_MASK[nr];
if (val)
reg |= data->PWM_MODE_MASK[nr];
nct6775_write_value(data, data->REG_PWM_MODE[nr], reg);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
int nr = sattr->nr;
int index = sattr->index;
int pwm;
/*
* For automatic fan control modes, show current pwm readings.
* Otherwise, show the configured value.
*/
if (index == 0 && data->pwm_enable[nr] > manual)
pwm = nct6775_read_value(data, data->REG_PWM_READ[nr]);
else
pwm = data->pwm[index][nr];
return sprintf(buf, "%d\n", pwm);
}
static ssize_t
store_pwm(struct device *dev, struct device_attribute *attr, const char *buf,
size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
int nr = sattr->nr;
int index = sattr->index;
unsigned long val;
int minval[7] = { 0, 1, 1, data->pwm[2][nr], 0, 0, 0 };
int maxval[7]
= { 255, 255, data->pwm[3][nr] ? : 255, 255, 255, 255, 255 };
int err;
u8 reg;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = clamp_val(val, minval[index], maxval[index]);
mutex_lock(&data->update_lock);
data->pwm[index][nr] = val;
nct6775_write_value(data, data->REG_PWM[index][nr], val);
if (index == 2) { /* floor: disable if val == 0 */
reg = nct6775_read_value(data, data->REG_TEMP_SEL[nr]);
reg &= 0x7f;
if (val)
reg |= 0x80;
nct6775_write_value(data, data->REG_TEMP_SEL[nr], reg);
}
mutex_unlock(&data->update_lock);
return count;
}
/* Returns 0 if OK, -EINVAL otherwise */
static int check_trip_points(struct nct6775_data *data, int nr)
{
int i;
for (i = 0; i < data->auto_pwm_num - 1; i++) {
if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1])
return -EINVAL;
}
for (i = 0; i < data->auto_pwm_num - 1; i++) {
if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1])
return -EINVAL;
}
/* validate critical temperature and pwm if enabled (pwm > 0) */
if (data->auto_pwm[nr][data->auto_pwm_num]) {
if (data->auto_temp[nr][data->auto_pwm_num - 1] >
data->auto_temp[nr][data->auto_pwm_num] ||
data->auto_pwm[nr][data->auto_pwm_num - 1] >
data->auto_pwm[nr][data->auto_pwm_num])
return -EINVAL;
}
return 0;
}
static void pwm_update_registers(struct nct6775_data *data, int nr)
{
u8 reg;
switch (data->pwm_enable[nr]) {
case off:
case manual:
break;
case speed_cruise:
reg = nct6775_read_value(data, data->REG_FAN_MODE[nr]);
reg = (reg & ~data->tolerance_mask) |
(data->target_speed_tolerance[nr] & data->tolerance_mask);
nct6775_write_value(data, data->REG_FAN_MODE[nr], reg);
nct6775_write_value(data, data->REG_TARGET[nr],
data->target_speed[nr] & 0xff);
if (data->REG_TOLERANCE_H) {
reg = (data->target_speed[nr] >> 8) & 0x0f;
reg |= (data->target_speed_tolerance[nr] & 0x38) << 1;
nct6775_write_value(data,
data->REG_TOLERANCE_H[nr],
reg);
}
break;
case thermal_cruise:
nct6775_write_value(data, data->REG_TARGET[nr],
data->target_temp[nr]);
/* intentional */
default:
reg = nct6775_read_value(data, data->REG_FAN_MODE[nr]);
reg = (reg & ~data->tolerance_mask) |
data->temp_tolerance[0][nr];
nct6775_write_value(data, data->REG_FAN_MODE[nr], reg);
break;
}
}
static ssize_t
show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
return sprintf(buf, "%d\n", data->pwm_enable[sattr->index]);
}
static ssize_t
store_pwm_enable(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err;
u16 reg;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (val > sf4)
return -EINVAL;
if (val == sf3 && data->kind != nct6775)
return -EINVAL;
if (val == sf4 && check_trip_points(data, nr)) {
dev_err(dev, "Inconsistent trip points, not switching to SmartFan IV mode\n");
dev_err(dev, "Adjust trip points and try again\n");
return -EINVAL;
}
mutex_lock(&data->update_lock);
data->pwm_enable[nr] = val;
if (val == off) {
/*
* turn off pwm control: select manual mode, set pwm to maximum
*/
data->pwm[0][nr] = 255;
nct6775_write_value(data, data->REG_PWM[0][nr], 255);
}
pwm_update_registers(data, nr);
reg = nct6775_read_value(data, data->REG_FAN_MODE[nr]);
reg &= 0x0f;
reg |= pwm_enable_to_reg(val) << 4;
nct6775_write_value(data, data->REG_FAN_MODE[nr], reg);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_pwm_temp_sel_common(struct nct6775_data *data, char *buf, int src)
{
int i, sel = 0;
for (i = 0; i < NUM_TEMP; i++) {
if (!(data->have_temp & (1 << i)))
continue;
if (src == data->temp_src[i]) {
sel = i + 1;
break;
}
}
return sprintf(buf, "%d\n", sel);
}
static ssize_t
show_pwm_temp_sel(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int index = sattr->index;
return show_pwm_temp_sel_common(data, buf, data->pwm_temp_sel[index]);
}
static ssize_t
store_pwm_temp_sel(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err, reg, src;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (val == 0 || val > NUM_TEMP)
return -EINVAL;
if (!(data->have_temp & (1 << (val - 1))) || !data->temp_src[val - 1])
return -EINVAL;
mutex_lock(&data->update_lock);
src = data->temp_src[val - 1];
data->pwm_temp_sel[nr] = src;
reg = nct6775_read_value(data, data->REG_TEMP_SEL[nr]);
reg &= 0xe0;
reg |= src;
nct6775_write_value(data, data->REG_TEMP_SEL[nr], reg);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_pwm_weight_temp_sel(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int index = sattr->index;
return show_pwm_temp_sel_common(data, buf,
data->pwm_weight_temp_sel[index]);
}
static ssize_t
store_pwm_weight_temp_sel(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err, reg, src;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (val > NUM_TEMP)
return -EINVAL;
if (val && (!(data->have_temp & (1 << (val - 1))) ||
!data->temp_src[val - 1]))
return -EINVAL;
mutex_lock(&data->update_lock);
if (val) {
src = data->temp_src[val - 1];
data->pwm_weight_temp_sel[nr] = src;
reg = nct6775_read_value(data, data->REG_WEIGHT_TEMP_SEL[nr]);
reg &= 0xe0;
reg |= (src | 0x80);
nct6775_write_value(data, data->REG_WEIGHT_TEMP_SEL[nr], reg);
} else {
data->pwm_weight_temp_sel[nr] = 0;
reg = nct6775_read_value(data, data->REG_WEIGHT_TEMP_SEL[nr]);
reg &= 0x7f;
nct6775_write_value(data, data->REG_WEIGHT_TEMP_SEL[nr], reg);
}
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_target_temp(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
return sprintf(buf, "%d\n", data->target_temp[sattr->index] * 1000);
}
static ssize_t
store_target_temp(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0,
data->target_temp_mask);
mutex_lock(&data->update_lock);
data->target_temp[nr] = val;
pwm_update_registers(data, nr);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_target_speed(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
return sprintf(buf, "%d\n",
fan_from_reg16(data->target_speed[nr],
data->fan_div[nr]));
}
static ssize_t
store_target_speed(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err;
u16 speed;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = clamp_val(val, 0, 1350000U);
speed = fan_to_reg(val, data->fan_div[nr]);
mutex_lock(&data->update_lock);
data->target_speed[nr] = speed;
pwm_update_registers(data, nr);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_temp_tolerance(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
int nr = sattr->nr;
int index = sattr->index;
return sprintf(buf, "%d\n", data->temp_tolerance[index][nr] * 1000);
}
static ssize_t
store_temp_tolerance(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
int nr = sattr->nr;
int index = sattr->index;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
/* Limit tolerance as needed */
val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, data->tolerance_mask);
mutex_lock(&data->update_lock);
data->temp_tolerance[index][nr] = val;
if (index)
pwm_update_registers(data, nr);
else
nct6775_write_value(data,
data->REG_CRITICAL_TEMP_TOLERANCE[nr],
val);
mutex_unlock(&data->update_lock);
return count;
}
/*
* Fan speed tolerance is a tricky beast, since the associated register is
* a tick counter, but the value is reported and configured as rpm.
* Compute resulting low and high rpm values and report the difference.
*/
static ssize_t
show_speed_tolerance(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct nct6775_data *data = nct6775_update_device(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
int low = data->target_speed[nr] - data->target_speed_tolerance[nr];
int high = data->target_speed[nr] + data->target_speed_tolerance[nr];
int tolerance;
if (low <= 0)
low = 1;
if (high > 0xffff)
high = 0xffff;
if (high < low)
high = low;
tolerance = (fan_from_reg16(low, data->fan_div[nr])
- fan_from_reg16(high, data->fan_div[nr])) / 2;
return sprintf(buf, "%d\n", tolerance);
}
static ssize_t
store_speed_tolerance(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
int nr = sattr->index;
unsigned long val;
int err;
int low, high;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
high = fan_from_reg16(data->target_speed[nr],
data->fan_div[nr]) + val;
low = fan_from_reg16(data->target_speed[nr],
data->fan_div[nr]) - val;
if (low <= 0)
low = 1;
if (high < low)
high = low;
val = (fan_to_reg(low, data->fan_div[nr]) -
fan_to_reg(high, data->fan_div[nr])) / 2;
/* Limit tolerance as needed */
val = clamp_val(val, 0, data->speed_tolerance_limit);
mutex_lock(&data->update_lock);
data->target_speed_tolerance[nr] = val;
pwm_update_registers(data, nr);
mutex_unlock(&data->update_lock);
return count;
}
static SENSOR_DEVICE_ATTR_2(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0, 0);
static SENSOR_DEVICE_ATTR_2(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1, 0);
static SENSOR_DEVICE_ATTR_2(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2, 0);
static SENSOR_DEVICE_ATTR_2(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3, 0);
static SENSOR_DEVICE_ATTR_2(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4, 0);
static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
store_pwm_mode, 0);
static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
store_pwm_mode, 1);
static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
store_pwm_mode, 2);
static SENSOR_DEVICE_ATTR(pwm4_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
store_pwm_mode, 3);
static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
store_pwm_mode, 4);
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
store_pwm_enable, 0);
static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
store_pwm_enable, 1);
static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
store_pwm_enable, 2);
static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
store_pwm_enable, 3);
static SENSOR_DEVICE_ATTR(pwm5_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
store_pwm_enable, 4);
static SENSOR_DEVICE_ATTR(pwm1_temp_sel, S_IWUSR | S_IRUGO,
show_pwm_temp_sel, store_pwm_temp_sel, 0);
static SENSOR_DEVICE_ATTR(pwm2_temp_sel, S_IWUSR | S_IRUGO,
show_pwm_temp_sel, store_pwm_temp_sel, 1);
static SENSOR_DEVICE_ATTR(pwm3_temp_sel, S_IWUSR | S_IRUGO,
show_pwm_temp_sel, store_pwm_temp_sel, 2);
static SENSOR_DEVICE_ATTR(pwm4_temp_sel, S_IWUSR | S_IRUGO,
show_pwm_temp_sel, store_pwm_temp_sel, 3);
static SENSOR_DEVICE_ATTR(pwm5_temp_sel, S_IWUSR | S_IRUGO,
show_pwm_temp_sel, store_pwm_temp_sel, 4);
static SENSOR_DEVICE_ATTR(pwm1_target_temp, S_IWUSR | S_IRUGO, show_target_temp,
store_target_temp, 0);
static SENSOR_DEVICE_ATTR(pwm2_target_temp, S_IWUSR | S_IRUGO, show_target_temp,
store_target_temp, 1);
static SENSOR_DEVICE_ATTR(pwm3_target_temp, S_IWUSR | S_IRUGO, show_target_temp,
store_target_temp, 2);
static SENSOR_DEVICE_ATTR(pwm4_target_temp, S_IWUSR | S_IRUGO, show_target_temp,
store_target_temp, 3);
static SENSOR_DEVICE_ATTR(pwm5_target_temp, S_IWUSR | S_IRUGO, show_target_temp,
store_target_temp, 4);
static SENSOR_DEVICE_ATTR(fan1_target, S_IWUSR | S_IRUGO, show_target_speed,
store_target_speed, 0);
static SENSOR_DEVICE_ATTR