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ubuntu-linux-kernel/drivers/hwmon/nct6775.c

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/*
* 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 <jdelvare@suse.de>
* 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
* nct6106d 9 3 3 6+3 0xc450 0xc1 0x5ca3
* 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
* nct6791d 15 6 6 2+6 0xc800 0xc1 0x5ca3
* nct6792d 15 6 6 2+6 0xc910 0xc1 0x5ca3
* nct6793d 15 6 6 2+6 0xd120 0xc1 0x5ca3
* nct6795d 14 6 6 2+6 0xd350 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/bitops.h>
#include <linux/dmi.h>
#include <linux/io.h>
#include "lm75.h"
#define USE_ALTERNATE
enum kinds { nct6106, nct6775, nct6776, nct6779, nct6791, nct6792, nct6793,
nct6795 };
/* used to set data->name = nct6775_device_names[data->sio_kind] */
static const char * const nct6775_device_names[] = {
"nct6106",
"nct6775",
"nct6776",
"nct6779",
"nct6791",
"nct6792",
"nct6793",
"nct6795",
};
static const char * const nct6775_sio_names[] __initconst = {
"NCT6106D",
"NCT6775F",
"NCT6776D/F",
"NCT6779D",
"NCT6791D",
"NCT6792D",
"NCT6793D",
"NCT6795D",
};
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 NCT6775_LD_12 0x12
#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_NCT6106_ID 0xc450
#define SIO_NCT6775_ID 0xb470
#define SIO_NCT6776_ID 0xc330
#define SIO_NCT6779_ID 0xc560
#define SIO_NCT6791_ID 0xc800
#define SIO_NCT6792_ID 0xc910
#define SIO_NCT6793_ID 0xd120
#define SIO_NCT6795_ID 0xd350
#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 7 /* Max number of alarm registers */
#define NUM_REG_BEEP 5 /* Max number of beep registers */
#define NUM_FAN 6
#define TEMP_SOURCE_VIRTUAL 0x1f
/* 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_DIODE_MASK 0x02
#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..29 temperatures, 30..31 intrusion */
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, -1, -1, /* 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 u16 NCT6775_REG_BEEP[NUM_REG_BEEP] = { 0x56, 0x57, 0x453, 0x4e };
/*
* 0..14 voltages, 15 global beep enable, 16..23 fans, 24..29 temperatures,
* 30..31 intrusion
*/
static const s8 NCT6775_BEEP_BITS[] = {
0, 1, 2, 3, 8, 9, 10, 16, /* in0.. in7 */
17, -1, -1, -1, -1, -1, -1, /* in8..in14 */
21, /* global beep enable */
6, 7, 11, 28, -1, /* fan1..fan5 */
-1, -1, -1, /* unused */
4, 5, 13, -1, -1, -1, /* temp1..temp6 */
12, -1 }; /* intrusion0, intrusion1 */
#define BEEP_ENABLE_BASE 15
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, 0xa01 };
static const u16 NCT6775_REG_FAN_MODE[] = {
0x102, 0x202, 0x302, 0x802, 0x902, 0xa02 };
static const u16 NCT6775_REG_FAN_STEP_DOWN_TIME[] = {
0x103, 0x203, 0x303, 0x803, 0x903, 0xa03 };
static const u16 NCT6775_REG_FAN_STEP_UP_TIME[] = {
0x104, 0x204, 0x304, 0x804, 0x904, 0xa04 };
static const u16 NCT6775_REG_FAN_STOP_OUTPUT[] = {
0x105, 0x205, 0x305, 0x805, 0x905, 0xa05 };
static const u16 NCT6775_REG_FAN_START_OUTPUT[] = {
0x106, 0x206, 0x306, 0x806, 0x906, 0xa06 };
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, 0xa07 };
static const u16 NCT6775_REG_PWM[] = {
0x109, 0x209, 0x309, 0x809, 0x909, 0xa09 };
static const u16 NCT6775_REG_PWM_READ[] = {
0x01, 0x03, 0x11, 0x13, 0x15, 0xa09 };
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_FAN_PULSE_SHIFT[] = { 0, 0, 0, 0, 0, 0 };
static const u16 NCT6775_REG_TEMP[] = {
0x27, 0x150, 0x250, 0x62b, 0x62c, 0x62d };
static const u16 NCT6775_REG_TEMP_MON[] = { 0x73, 0x75, 0x77 };
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, 0xa00 };
static const u16 NCT6775_REG_WEIGHT_TEMP_SEL[] = {
0x139, 0x239, 0x339, 0x839, 0x939, 0xa39 };
static const u16 NCT6775_REG_WEIGHT_TEMP_STEP[] = {
0x13a, 0x23a, 0x33a, 0x83a, 0x93a, 0xa3a };
static const u16 NCT6775_REG_WEIGHT_TEMP_STEP_TOL[] = {
0x13b, 0x23b, 0x33b, 0x83b, 0x93b, 0xa3b };
static const u16 NCT6775_REG_WEIGHT_DUTY_STEP[] = {
0x13c, 0x23c, 0x33c, 0x83c, 0x93c, 0xa3c };
static const u16 NCT6775_REG_WEIGHT_TEMP_BASE[] = {
0x13d, 0x23d, 0x33d, 0x83d, 0x93d, 0xa3d };
static const u16 NCT6775_REG_TEMP_OFFSET[] = { 0x454, 0x455, 0x456 };
static const u16 NCT6775_REG_AUTO_TEMP[] = {
0x121, 0x221, 0x321, 0x821, 0x921, 0xa21 };
static const u16 NCT6775_REG_AUTO_PWM[] = {
0x127, 0x227, 0x327, 0x827, 0x927, 0xa27 };
#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, 0xa35 };
static const u16 NCT6775_REG_CRITICAL_TEMP_TOLERANCE[] = {
0x138, 0x238, 0x338, 0x838, 0x938, 0xa38 };
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"
};
#define NCT6775_TEMP_MASK 0x001ffffe
static const u16 NCT6775_REG_TEMP_ALTERNATE[32] = {
[13] = 0x661,
[14] = 0x662,
[15] = 0x664,
};
static const u16 NCT6775_REG_TEMP_CRIT[32] = {
[4] = 0xa00,
[5] = 0xa01,
[6] = 0xa02,
[7] = 0xa03,
[8] = 0xa04,
[9] = 0xa05,
[10] = 0xa06,
[11] = 0xa07
};
/* NCT6776 specific data */
/* STEP_UP_TIME and STEP_DOWN_TIME regs are swapped for all chips but NCT6775 */
#define NCT6776_REG_FAN_STEP_UP_TIME NCT6775_REG_FAN_STEP_DOWN_TIME
#define NCT6776_REG_FAN_STEP_DOWN_TIME NCT6775_REG_FAN_STEP_UP_TIME
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_BEEP[NUM_REG_BEEP] = { 0xb2, 0xb3, 0xb4, 0xb5 };
static const s8 NCT6776_BEEP_BITS[] = {
0, 1, 2, 3, 4, 5, 6, 7, /* in0.. in7 */
8, -1, -1, -1, -1, -1, -1, /* in8..in14 */
24, /* global beep enable */
25, 26, 27, 28, 29, /* fan1..fan5 */
-1, -1, -1, /* unused */
16, 17, 18, 19, 20, 21, /* temp1..temp6 */
30, 31 }; /* intrusion0, intrusion1 */
static const u16 NCT6776_REG_TOLERANCE_H[] = {
0x10c, 0x20c, 0x30c, 0x80c, 0x90c, 0xa0c };
static const u8 NCT6776_REG_PWM_MODE[] = { 0x04, 0, 0, 0, 0, 0 };
static const u8 NCT6776_PWM_MODE_MASK[] = { 0x01, 0, 0, 0, 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, 0xa3e };
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"
};
#define NCT6776_TEMP_MASK 0x007ffffe
static const u16 NCT6776_REG_TEMP_ALTERNATE[32] = {
[14] = 0x401,
[15] = 0x402,
[16] = 0x404,
};
static const u16 NCT6776_REG_TEMP_CRIT[32] = {
[11] = 0x709,
[12] = 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 s8 NCT6779_BEEP_BITS[] = {
0, 1, 2, 3, 4, 5, 6, 7, /* in0.. in7 */
8, 9, 10, 11, 12, 13, 14, /* in8..in14 */
24, /* global beep enable */
25, 26, 27, 28, 29, /* fan1..fan5 */
-1, -1, -1, /* unused */
16, 17, -1, -1, -1, -1, /* temp1..temp6 */
30, 31 }; /* intrusion0, intrusion1 */
static const u16 NCT6779_REG_FAN[] = {
0x4b0, 0x4b2, 0x4b4, 0x4b6, 0x4b8, 0x4ba };
static const u16 NCT6779_REG_FAN_PULSES[] = {
0x644, 0x645, 0x646, 0x647, 0x648, 0x649 };
static const u16 NCT6779_REG_CRITICAL_PWM_ENABLE[] = {
0x136, 0x236, 0x336, 0x836, 0x936, 0xa36 };
#define NCT6779_CRITICAL_PWM_ENABLE_MASK 0x01
static const u16 NCT6779_REG_CRITICAL_PWM[] = {
0x137, 0x237, 0x337, 0x837, 0x937, 0xa37 };
static const u16 NCT6779_REG_TEMP[] = { 0x27, 0x150 };
static const u16 NCT6779_REG_TEMP_MON[] = { 0x73, 0x75, 0x77, 0x79, 0x7b };
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",
"",
"",
"",
"",
"Virtual_TEMP"
};
#define NCT6779_TEMP_MASK 0x07ffff7e
#define NCT6791_TEMP_MASK 0x87ffff7e
static const u16 NCT6779_REG_TEMP_ALTERNATE[32]
= { 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[32] = {
[15] = 0x709,
[16] = 0x70a,
};
/* NCT6791 specific data */
#define NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE 0x28
static const u16 NCT6791_REG_WEIGHT_TEMP_SEL[6] = { 0, 0x239 };
static const u16 NCT6791_REG_WEIGHT_TEMP_STEP[6] = { 0, 0x23a };
static const u16 NCT6791_REG_WEIGHT_TEMP_STEP_TOL[6] = { 0, 0x23b };
static const u16 NCT6791_REG_WEIGHT_DUTY_STEP[6] = { 0, 0x23c };
static const u16 NCT6791_REG_WEIGHT_TEMP_BASE[6] = { 0, 0x23d };
static const u16 NCT6791_REG_WEIGHT_DUTY_BASE[6] = { 0, 0x23e };
static const u16 NCT6791_REG_ALARM[NUM_REG_ALARM] = {
0x459, 0x45A, 0x45B, 0x568, 0x45D };
static const s8 NCT6791_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, 33, /* fan1..fan6 */
-1, -1, /* unused */
4, 5, 13, -1, -1, -1, /* temp1..temp6 */
12, 9 }; /* intrusion0, intrusion1 */
/* NCT6792/NCT6793 specific data */
static const u16 NCT6792_REG_TEMP_MON[] = {
0x73, 0x75, 0x77, 0x79, 0x7b, 0x7d };
static const u16 NCT6792_REG_BEEP[NUM_REG_BEEP] = {
0xb2, 0xb3, 0xb4, 0xb5, 0xbf };
static const char *const nct6792_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",
"PECI Agent 0 Calibration",
"PECI Agent 1 Calibration",
"",
"",
"Virtual_TEMP"
};
#define NCT6792_TEMP_MASK 0x9fffff7e
static const char *const nct6793_temp_label[] = {
"",
"SYSTIN",
"CPUTIN",
"AUXTIN0",
"AUXTIN1",
"AUXTIN2",
"AUXTIN3",
"",
"SMBUSMASTER 0",
"SMBUSMASTER 1",
"",
"",
"",
"",
"",
"",
"PECI Agent 0",
"PECI Agent 1",
"PCH_CHIP_CPU_MAX_TEMP",
"PCH_CHIP_TEMP",
"PCH_CPU_TEMP",
"PCH_MCH_TEMP",
"Agent0 Dimm0 ",
"Agent0 Dimm1",
"Agent1 Dimm0",
"Agent1 Dimm1",
"BYTE_TEMP0",
"BYTE_TEMP1",
"PECI Agent 0 Calibration",
"PECI Agent 1 Calibration",
"",
"Virtual_TEMP"
};
#define NCT6793_TEMP_MASK 0xbfff037e
static const char *const nct6795_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_TEMP0",
"BYTE_TEMP1",
"PECI Agent 0 Calibration",
"PECI Agent 1 Calibration",
"",
"Virtual_TEMP"
};
#define NCT6795_TEMP_MASK 0xbfffff7e
/* NCT6102D/NCT6106D specific data */
#define NCT6106_REG_VBAT 0x318
#define NCT6106_REG_DIODE 0x319
#define NCT6106_DIODE_MASK 0x01
static const u16 NCT6106_REG_IN_MAX[] = {
0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9e, 0xa0, 0xa2 };
static const u16 NCT6106_REG_IN_MIN[] = {
0x91, 0x93, 0x95, 0x97, 0x99, 0x9b, 0x9f, 0xa1, 0xa3 };
static const u16 NCT6106_REG_IN[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x07, 0x08, 0x09 };
static const u16 NCT6106_REG_TEMP[] = { 0x10, 0x11, 0x12, 0x13, 0x14, 0x15 };
static const u16 NCT6106_REG_TEMP_MON[] = { 0x18, 0x19, 0x1a };
static const u16 NCT6106_REG_TEMP_HYST[] = {
0xc3, 0xc7, 0xcb, 0xcf, 0xd3, 0xd7 };
static const u16 NCT6106_REG_TEMP_OVER[] = {
0xc2, 0xc6, 0xca, 0xce, 0xd2, 0xd6 };
static const u16 NCT6106_REG_TEMP_CRIT_L[] = {
0xc0, 0xc4, 0xc8, 0xcc, 0xd0, 0xd4 };
static const u16 NCT6106_REG_TEMP_CRIT_H[] = {
0xc1, 0xc5, 0xc9, 0xcf, 0xd1, 0xd5 };
static const u16 NCT6106_REG_TEMP_OFFSET[] = { 0x311, 0x312, 0x313 };
static const u16 NCT6106_REG_TEMP_CONFIG[] = {
0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc };
static const u16 NCT6106_REG_FAN[] = { 0x20, 0x22, 0x24 };
static const u16 NCT6106_REG_FAN_MIN[] = { 0xe0, 0xe2, 0xe4 };
static const u16 NCT6106_REG_FAN_PULSES[] = { 0xf6, 0xf6, 0xf6, 0, 0 };
static const u16 NCT6106_FAN_PULSE_SHIFT[] = { 0, 2, 4, 0, 0 };
static const u8 NCT6106_REG_PWM_MODE[] = { 0xf3, 0xf3, 0xf3 };
static const u8 NCT6106_PWM_MODE_MASK[] = { 0x01, 0x02, 0x04 };
static const u16 NCT6106_REG_PWM[] = { 0x119, 0x129, 0x139 };
static const u16 NCT6106_REG_PWM_READ[] = { 0x4a, 0x4b, 0x4c };
static const u16 NCT6106_REG_FAN_MODE[] = { 0x113, 0x123, 0x133 };
static const u16 NCT6106_REG_TEMP_SEL[] = { 0x110, 0x120, 0x130 };
static const u16 NCT6106_REG_TEMP_SOURCE[] = {
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5 };
static const u16 NCT6106_REG_CRITICAL_TEMP[] = { 0x11a, 0x12a, 0x13a };
static const u16 NCT6106_REG_CRITICAL_TEMP_TOLERANCE[] = {
0x11b, 0x12b, 0x13b };
static const u16 NCT6106_REG_CRITICAL_PWM_ENABLE[] = { 0x11c, 0x12c, 0x13c };
#define NCT6106_CRITICAL_PWM_ENABLE_MASK 0x10
static const u16 NCT6106_REG_CRITICAL_PWM[] = { 0x11d, 0x12d, 0x13d };
static const u16 NCT6106_REG_FAN_STEP_UP_TIME[] = { 0x114, 0x124, 0x134 };
static const u16 NCT6106_REG_FAN_STEP_DOWN_TIME[] = { 0x115, 0x125, 0x135 };
static const u16 NCT6106_REG_FAN_STOP_OUTPUT[] = { 0x116, 0x126, 0x136 };
static const u16 NCT6106_REG_FAN_START_OUTPUT[] = { 0x117, 0x127, 0x137 };
static const u16 NCT6106_REG_FAN_STOP_TIME[] = { 0x118, 0x128, 0x138 };
static const u16 NCT6106_REG_TOLERANCE_H[] = { 0x112, 0x122, 0x132 };
static const u16 NCT6106_REG_TARGET[] = { 0x111, 0x121, 0x131 };
static const u16 NCT6106_REG_WEIGHT_TEMP_SEL[] = { 0x168, 0x178, 0x188 };
static const u16 NCT6106_REG_WEIGHT_TEMP_STEP[] = { 0x169, 0x179, 0x189 };
static const u16 NCT6106_REG_WEIGHT_TEMP_STEP_TOL[] = { 0x16a, 0x17a, 0x18a };
static const u16 NCT6106_REG_WEIGHT_DUTY_STEP[] = { 0x16b, 0x17b, 0x17c };
static const u16 NCT6106_REG_WEIGHT_TEMP_BASE[] = { 0x16c, 0x17c, 0x18c };
static const u16 NCT6106_REG_WEIGHT_DUTY_BASE[] = { 0x16d, 0x17d, 0x18d };
static const u16 NCT6106_REG_AUTO_TEMP[] = { 0x160, 0x170, 0x180 };
static const u16 NCT6106_REG_AUTO_PWM[] = { 0x164, 0x174, 0x184 };
static const u16 NCT6106_REG_ALARM[NUM_REG_ALARM] = {
0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d };
static const s8 NCT6106_ALARM_BITS[] = {
0, 1, 2, 3, 4, 5, 7, 8, /* in0.. in7 */
9, -1, -1, -1, -1, -1, -1, /* in8..in14 */
-1, /* unused */
32, 33, 34, -1, -1, /* fan1..fan5 */
-1, -1, -1, /* unused */
16, 17, 18, 19, 20, 21, /* temp1..temp6 */
48, -1 /* intrusion0, intrusion1 */
};
static const u16 NCT6106_REG_BEEP[NUM_REG_BEEP] = {
0x3c0, 0x3c1, 0x3c2, 0x3c3, 0x3c4 };
static const s8 NCT6106_BEEP_BITS[] = {
0, 1, 2, 3, 4, 5, 7, 8, /* in0.. in7 */
9, 10, 11, 12, -1, -1, -1, /* in8..in14 */
32, /* global beep enable */
24, 25, 26, 27, 28, /* fan1..fan5 */
-1, -1, -1, /* unused */
16, 17, 18, 19, 20, 21, /* temp1..temp6 */
34, -1 /* intrusion0, intrusion1 */
};
static const u16 NCT6106_REG_TEMP_ALTERNATE[32] = {
[14] = 0x51,
[15] = 0x52,
[16] = 0x54,
};
static const u16 NCT6106_REG_TEMP_CRIT[32] = {
[11] = 0x204,
[12] = 0x205,
};
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 BIT(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 */
int sioreg; /* SIO register address */
enum kinds kind;
const char *name;
const struct attribute_group *groups[6];
u16 reg_temp[5][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
* 3=temp_crit, 4=temp_lcrit
*/
u8 temp_src[NUM_TEMP];
u16 reg_temp_config[NUM_TEMP];
const char * const *temp_label;
u32 temp_mask;
u16 REG_CONFIG;
u16 REG_VBAT;
u16 REG_DIODE;
u8 DIODE_MASK;
const s8 *ALARM_BITS;
const s8 *BEEP_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 *FAN_PULSE_SHIFT;
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_CRITICAL_PWM_ENABLE;
u8 CRITICAL_PWM_ENABLE_MASK;
const u16 *REG_CRITICAL_PWM;
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;
const u16 *REG_BEEP;
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[NUM_FAN];
u16 fan_min[NUM_FAN];
u8 fan_pulses[NUM_FAN];
u8 fan_div[NUM_FAN];
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 num_temp_alarms; /* 2, 3, or 6 */
u8 num_temp_beeps; /* 2, 3, or 6 */
u8 temp_fixed_num; /* 3 or 6 */
u8 temp_type[NUM_TEMP_FIXED];
s8 temp_offset[NUM_TEMP_FIXED];
s16 temp[5][NUM_TEMP]; /* 0=temp, 1=temp_over, 2=temp_hyst,
* 3=temp_crit, 4=temp_lcrit */
u64 alarms;
u64 beeps;
u8 pwm_num; /* number of pwm */
u8 pwm_mode[NUM_FAN]; /* 1->DC variable voltage,
* 0->PWM variable duty cycle
*/
enum pwm_enable pwm_enable[NUM_FAN];
/* 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][NUM_FAN]; /* [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[NUM_FAN];
u8 target_temp_mask;
u32 target_speed[NUM_FAN];
u32 target_speed_tolerance[NUM_FAN];
u8 speed_tolerance_limit;
u8 temp_tolerance[2][NUM_FAN];
u8 tolerance_mask;
u8 fan_time[3][NUM_FAN]; /* 0 = stop_time, 1 = step_up, 2 = step_down */
/* Automatic fan speed control registers */
int auto_pwm_num;
u8 auto_pwm[NUM_FAN][7];
u8 auto_temp[NUM_FAN][7];
u8 pwm_temp_sel[NUM_FAN];
u8 pwm_weight_temp_sel[NUM_FAN];
u8 weight_temp[3][NUM_FAN]; /* 0->temp_step, 1->temp_step_tol,
* 2->temp_base
*/
u8 vid;
u8 vrm;
bool have_vid;
u16 have_temp;
u16 have_temp_fixed;
u16 have_in;
/* Remember extra register values over suspend/resume */
u8 vbat;
u8 fandiv1;
u8 fandiv2;
u8 sio_reg_enable;
};
struct nct6775_sio_data {
int sioreg;
enum kinds kind;
};
struct sensor_device_template {
struct device_attribute dev_attr;
union {
struct {
u8 nr;
u8 index;
} s;
int index;
} u;
bool s2; /* true if both index and nr are used */
};
struct sensor_device_attr_u {
union {
struct sensor_device_attribute a1;
struct sensor_device_attribute_2 a2;
} u;
char name[32];
};
#define __TEMPLATE_ATTR(_template, _mode, _show, _store) { \
.attr = {.name = _template, .mode = _mode }, \
.show = _show, \
.store = _store, \
}
#define SENSOR_DEVICE_TEMPLATE(_template, _mode, _show, _store, _index) \
{ .dev_attr = __TEMPLATE_ATTR(_template, _mode, _show, _store), \
.u.index = _index, \
.s2 = false }
#define SENSOR_DEVICE_TEMPLATE_2(_template, _mode, _show, _store, \
_nr, _index) \
{ .dev_attr = __TEMPLATE_ATTR(_template, _mode, _show, _store), \
.u.s.index = _index, \
.u.s.nr = _nr, \
.s2 = true }
#define SENSOR_TEMPLATE(_name, _template, _mode, _show, _store, _index) \
static struct sensor_device_template sensor_dev_template_##_name \
= SENSOR_DEVICE_TEMPLATE(_template, _mode, _show, _store, \
_index)
#define SENSOR_TEMPLATE_2(_name, _template, _mode, _show, _store, \
_nr, _index) \
static struct sensor_device_template sensor_dev_template_##_name \
= SENSOR_DEVICE_TEMPLATE_2(_template, _mode, _show, _store, \
_nr, _index)
struct sensor_template_group {
struct sensor_device_template **templates;
umode_t (*is_visible)(struct kobject *, struct attribute *, int);
int base;
};
static struct attribute_group *
nct6775_create_attr_group(struct device *dev,
const struct sensor_template_group *tg,
int repeat)
{
struct attribute_group *group;
struct sensor_device_attr_u *su;
struct sensor_device_attribute *a;
struct sensor_device_attribute_2 *a2;
struct attribute **attrs;
struct sensor_device_template **t;
int i, count;
if (repeat <= 0)
return ERR_PTR(-EINVAL);
t = tg->templates;
for (count = 0; *t; t++, count++)
;
if (count == 0)
return ERR_PTR(-EINVAL);
group = devm_kzalloc(dev, sizeof(*group), GFP_KERNEL);
if (group == NULL)
return ERR_PTR(-ENOMEM);
attrs = devm_kzalloc(dev, sizeof(*attrs) * (repeat * count + 1),
GFP_KERNEL);
if (attrs == NULL)
return ERR_PTR(-ENOMEM);
su = devm_kzalloc(dev, sizeof(*su) * repeat * count,
GFP_KERNEL);
if (su == NULL)
return ERR_PTR(-ENOMEM);
group->attrs = attrs;
group->is_visible = tg->is_visible;
for (i = 0; i < repeat; i++) {
t = tg->templates;
while (*t != NULL) {
snprintf(su->name, sizeof(su->name),
(*t)->dev_attr.attr.name, tg->base + i);
if ((*t)->s2) {
a2 = &su->u.a2;
sysfs_attr_init(&a2->dev_attr.attr);
a2->dev_attr.attr.name = su->name;
a2->nr = (*t)->u.s.nr + i;
a2->index = (*t)->u.s.index;
a2->dev_attr.attr.mode =
(*t)->dev_attr.attr.mode;
a2->dev_attr.show = (*t)->dev_attr.show;
a2->dev_attr.store = (*t)->dev_attr.store;
*attrs = &a2->dev_attr.attr;
} else {
a = &su->u.a1;
sysfs_attr_init(&a->dev_attr.attr);
a->dev_attr.attr.name = su->name;
a->index = (*t)->u.index + i;
a->dev_attr.attr.mode =
(*t)->dev_attr.attr.mode;
a->dev_attr.show = (*t)->dev_attr.show;
a->dev_attr.store = (*t)->dev_attr.store;
*attrs = &a->dev_attr.attr;
}
attrs++;
su++;
t++;
}
}
return group;
}
static bool is_word_sized(struct nct6775_data *data, u16 reg)
{
switch (data->kind) {
case nct6106:
return reg == 0x20 || reg == 0x22 || reg == 0x24 ||
reg == 0xe0 || reg == 0xe2 || reg == 0xe4 ||
reg == 0x111 || reg == 0x121 || reg == 0x131;
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:
case nct6791:
case nct6792:
case nct6793:
case nct6795:
return reg == 0x150 || reg == 0x153 || reg == 0x155 ||
((reg & 0xfff0) == 0x4b0 && (reg & 0x000f) < 0x0b) ||
reg == 0x402 ||
reg == 0x63a || reg == 0x63c || reg == 0x63e ||
reg == 0x640 || reg == 0x642 ||
reg == 0x73 || reg == 0x75 || reg == 0x77 || reg == 0x79 ||
reg == 0x7b || reg == 0x7d;
}
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 & BIT(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 & BIT(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 & BIT(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 & BIT(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 & BIT(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;
if (!data->REG_WEIGHT_TEMP_SEL[i])
continue;
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 & BIT(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 nct6106:
case nct6779:
case nct6791:
case nct6792:
case nct6793:
case nct6795:
reg = nct6775_read_value(data,
data->REG_CRITICAL_PWM_ENABLE[i]);
if (reg & data->CRITICAL_PWM_ENABLE_MASK)
reg = nct6775_read_value(data,
data->REG_CRITICAL_PWM[i]);
else
reg = 0xff;
data->auto_pwm[i][data->auto_pwm_num] = reg;
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 & BIT(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 & BIT(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 & BIT(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])
>> data->FAN_PULSE_SHIFT[i]) & 0x03;
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 & BIT(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 (i >= NUM_TEMP_FIXED ||
!(data->have_temp_fixed & BIT(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->beeps = 0;
for (i = 0; i < NUM_REG_BEEP; i++) {
u8 beep;
if (!data->REG_BEEP[i])
continue;
beep = nct6775_read_value(data, data->REG_BEEP[i]);
data->beeps |= ((u64)beep) << (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 index = sattr->index;
int nr = sattr->nr;
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 index = sattr->index;
int nr = sattr->nr;
unsigned long val;
int err;
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 int find_temp_source(struct nct6775_data *data, int index, int count)
{
int source = data->temp_src[index];
int nr;
for (nr = 0; nr < count; nr++) {
int src;
src = nct6775_read_value(data,
data->REG_TEMP_SOURCE[nr]) & 0x1f;
if (src == source)
return nr;
}
return -ENODEV;
}
static ssize_t
show_temp_alarm(struct device *dev, struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
struct nct6775_data *data = nct6775_update_device(dev);
unsigned int alarm = 0;
int nr;
/*
* For temperatures, there is no fixed mapping from registers to alarm
* bits. Alarm bits are determined by the temperature source mapping.
*/
nr = find_temp_source(data, sattr->index, data->num_temp_alarms);
if (nr >= 0) {
int bit = data->ALARM_BITS[nr + TEMP_ALARM_BASE];
alarm = (data->alarms >> bit) & 0x01;
}
return sprintf(buf, "%u\n", alarm);
}
static ssize_t
show_beep(struct device *dev, struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
struct nct6775_data *data = nct6775_update_device(dev);
int nr = data->BEEP_BITS[sattr->index];
return sprintf(buf, "%u\n",
(unsigned int)((data->beeps >> nr) & 0x01));
}
static ssize_t
store_beep(struct device *dev, struct device_attribute *attr, const char *buf,
size_t count)
{
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
struct nct6775_data *data = dev_get_drvdata(dev);
int nr = data->BEEP_BITS[sattr->index];
int regindex = nr >> 3;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (val > 1)
return -EINVAL;
mutex_lock(&data->update_lock);
if (val)
data->beeps |= (1ULL << nr);
else
data->beeps &= ~(1ULL << nr);
nct6775_write_value(data, data->REG_BEEP[regindex],
(data->beeps >> (regindex << 3)) & 0xff);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_temp_beep(struct device *dev, struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
struct nct6775_data *data = nct6775_update_device(dev);
unsigned int beep = 0;
int nr;
/*
* For temperatures, there is no fixed mapping from registers to beep
* enable bits. Beep enable bits are determined by the temperature
* source mapping.
*/
nr = find_temp_source(data, sattr->index, data->num_temp_beeps);
if (nr >= 0) {
int bit = data->BEEP_BITS[nr + TEMP_ALARM_BASE];
beep = (data->beeps >> bit) & 0x01;
}
return sprintf(buf, "%u\n", beep);
}
static ssize_t
store_temp_beep(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
struct nct6775_data *data = dev_get_drvdata(dev);
int nr, bit, regindex;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (val > 1)
return -EINVAL;
nr = find_temp_source(data, sattr->index, data->num_temp_beeps);
if (nr < 0)
return nr;
bit = data->BEEP_BITS[nr + TEMP_ALARM_BASE];
regindex = bit >> 3;
mutex_lock(&data->update_lock);
if (val)
data->beeps |= (1ULL << bit);
else
data->beeps &= ~(1ULL << bit);
nct6775_write_value(data, data->REG_BEEP[regindex],
(data->beeps >> (regindex << 3)) & 0xff);
mutex_unlock(&data->update_lock);
return count;
}
static umode_t nct6775_in_is_visible(struct kobject *kobj,
struct attribute *attr, int index)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nct6775_data *data = dev_get_drvdata(dev);
int in = index / 5; /* voltage index */
if (!(data->have_in & BIT(in)))
return 0;
return attr->mode;
}
SENSOR_TEMPLATE_2(in_input, "in%d_input", S_IRUGO, show_in_reg, NULL, 0, 0);
SENSOR_TEMPLATE(in_alarm, "in%d_alarm", S_IRUGO, show_alarm, NULL, 0);
SENSOR_TEMPLATE(in_beep, "in%d_beep", S_IWUSR | S_IRUGO, show_beep, store_beep,
0);
SENSOR_TEMPLATE_2(in_min, "in%d_min", S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 0, 1);
SENSOR_TEMPLATE_2(in_max, "in%d_max", S_IWUSR | S_IRUGO, show_in_reg,
store_in_reg, 0, 2);
/*
* nct6775_in_is_visible uses the index into the following array
* to determine if attributes should be created or not.
* Any change in order or content must be matched.
*/
static struct sensor_device_template *nct6775_attributes_in_template[] = {
&sensor_dev_template_in_input,
&sensor_dev_template_in_alarm,
&sensor_dev_template_in_beep,
&sensor_dev_template_in_min,
&sensor_dev_template_in_max,
NULL
};
static const struct sensor_template_group nct6775_in_template_group = {
.templates = nct6775_attributes_in_template,
.is_visible = nct6775_in_is_visible,
};
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;
unsigned int reg;
u8 new_div;
int err;
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 == BIT(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 == BIT(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;
u8 reg;
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;
reg = nct6775_read_value(data, data->REG_FAN_PULSES[nr]);
reg &= ~(0x03 << data->FAN_PULSE_SHIFT[nr]);
reg |= (val & 3) << data->FAN_PULSE_SHIFT[nr];
nct6775_write_value(data, data->REG_FAN_PULSES[nr], reg);
mutex_unlock(&data->update_lock);
return count;
}
static umode_t nct6775_fan_is_visible(struct kobject *kobj,
struct attribute *attr, int index)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nct6775_data *data = dev_get_drvdata(dev);
int fan = index / 6; /* fan index */
int nr = index % 6; /* attribute index */
if (!(data->has_fan & BIT(fan)))
return 0;
if (nr == 1 && data->ALARM_BITS[FAN_ALARM_BASE + fan] == -1)
return 0;
if (nr == 2 && data->BEEP_BITS[FAN_ALARM_BASE + fan] == -1)
return 0;
if (nr == 4 && !(data->has_fan_min & BIT(fan)))
return 0;
if (nr == 5 && data->kind != nct6775)
return 0;
return attr->mode;
}
SENSOR_TEMPLATE(fan_input, "fan%d_input", S_IRUGO, show_fan, NULL, 0);
SENSOR_TEMPLATE(fan_alarm, "fan%d_alarm", S_IRUGO, show_alarm, NULL,
FAN_ALARM_BASE);
SENSOR_TEMPLATE(fan_beep, "fan%d_beep", S_IWUSR | S_IRUGO, show_beep,
store_beep, FAN_ALARM_BASE);
SENSOR_TEMPLATE(fan_pulses, "fan%d_pulses", S_IWUSR | S_IRUGO, show_fan_pulses,
store_fan_pulses, 0);
SENSOR_TEMPLATE(fan_min, "fan%d_min", S_IWUSR | S_IRUGO, show_fan_min,
store_fan_min, 0);
SENSOR_TEMPLATE(fan_div, "fan%d_div", S_IRUGO, show_fan_div, NULL, 0);
/*
* nct6775_fan_is_visible uses the index into the following array
* to determine if attributes should be created or not.
* Any change in order or content must be matched.
*/
static struct sensor_device_template *nct6775_attributes_fan_template[] = {
&sensor_dev_template_fan_input,
&sensor_dev_template_fan_alarm, /* 1 */
&sensor_dev_template_fan_beep, /* 2 */
&sensor_dev_template_fan_pulses,
&sensor_dev_template_fan_min, /* 4 */
&sensor_dev_template_fan_div, /* 5 */
NULL
};
static const struct sensor_template_group nct6775_fan_template_group = {
.templates = nct6775_attributes_fan_template,
.is_visible = nct6775_fan_is_visible,
.base = 1,
};
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, vbit, dbit;
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;
vbit = 0x02 << nr;
dbit = data->DIODE_MASK << nr;
vbat = nct6775_read_value(data, data->REG_VBAT) & ~vbit;
diode = nct6775_read_value(data, data->REG_DIODE) & ~dbit;
switch (val) {
case 1: /* CPU diode (diode, current mode) */
vbat |= vbit;
diode |= dbit;
break;
case 3: /* diode, voltage mode */
vbat |= dbit;
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 umode_t nct6775_temp_is_visible(struct kobject *kobj,
struct attribute *attr, int index)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nct6775_data *data = dev_get_drvdata(dev);
int temp = index / 10; /* temp index */
int nr = index % 10; /* attribute index */
if (!(data->have_temp & BIT(temp)))
return 0;
if (nr == 1 && !data->temp_label)
return 0;
if (nr == 2 && find_temp_source(data, temp, data->num_temp_alarms) < 0)
return 0; /* alarm */
if (nr == 3 && find_temp_source(data, temp, data->num_temp_beeps) < 0)
return 0; /* beep */
if (nr == 4 && !data->reg_temp[1][temp]) /* max */
return 0;
if (nr == 5 && !data->reg_temp[2][temp]) /* max_hyst */
return 0;
if (nr == 6 && !data->reg_temp[3][temp]) /* crit */
return 0;
if (nr == 7 && !data->reg_temp[4][temp]) /* lcrit */
return 0;
/* offset and type only apply to fixed sensors */
if (nr > 7 && !(data->have_temp_fixed & BIT(temp)))
return 0;
return attr->mode;
}
SENSOR_TEMPLATE_2(temp_input, "temp%d_input", S_IRUGO, show_temp, NULL, 0, 0);
SENSOR_TEMPLATE(temp_label, "temp%d_label", S_IRUGO, show_temp_label, NULL, 0);
SENSOR_TEMPLATE_2(temp_max, "temp%d_max", S_IRUGO | S_IWUSR, show_temp,
store_temp, 0, 1);
SENSOR_TEMPLATE_2(temp_max_hyst, "temp%d_max_hyst", S_IRUGO | S_IWUSR,
show_temp, store_temp, 0, 2);
SENSOR_TEMPLATE_2(temp_crit, "temp%d_crit", S_IRUGO | S_IWUSR, show_temp,
store_temp, 0, 3);
SENSOR_TEMPLATE_2(temp_lcrit, "temp%d_lcrit", S_IRUGO | S_IWUSR, show_temp,
store_temp, 0, 4);
SENSOR_TEMPLATE(temp_offset, "temp%d_offset", S_IRUGO | S_IWUSR,
show_temp_offset, store_temp_offset, 0);
SENSOR_TEMPLATE(temp_type, "temp%d_type", S_IRUGO | S_IWUSR, show_temp_type,
store_temp_type, 0);
SENSOR_TEMPLATE(temp_alarm, "temp%d_alarm", S_IRUGO, show_temp_alarm, NULL, 0);
SENSOR_TEMPLATE(temp_beep, "temp%d_beep", S_IRUGO | S_IWUSR, show_temp_beep,
store_temp_beep, 0);
/*
* nct6775_temp_is_visible uses the index into the following array
* to determine if attributes should be created or not.
* Any change in order or content must be matched.
*/
static struct sensor_device_template *nct6775_attributes_temp_template[] = {
&sensor_dev_template_temp_input,
&sensor_dev_template_temp_label,
&sensor_dev_template_temp_alarm, /* 2 */
&sensor_dev_template_temp_beep, /* 3 */
&sensor_dev_template_temp_max, /* 4 */
&sensor_dev_template_temp_max_hyst, /* 5 */
&sensor_dev_template_temp_crit, /* 6 */
&sensor_dev_template_temp_lcrit, /* 7 */
&sensor_dev_template_temp_offset, /* 8 */
&sensor_dev_template_temp_type, /* 9 */
NULL
};
static const struct sensor_template_group nct6775_temp_template_group = {
.templates = nct6775_attributes_temp_template,
.is_visible = nct6775_temp_is_visible,
.base = 1,
};
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 & BIT(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 & BIT(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 & BIT(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;
}
SENSOR_TEMPLATE_2(pwm, "pwm%d", S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0, 0);
SENSOR_TEMPLATE(pwm_mode, "pwm%d_mode", S_IWUSR | S_IRUGO, show_pwm_mode,
store_pwm_mode, 0);
SENSOR_TEMPLATE(pwm_enable, "pwm%d_enable", S_IWUSR | S_IRUGO, show_pwm_enable,
store_pwm_enable, 0);
SENSOR_TEMPLATE(pwm_temp_sel, "pwm%d_temp_sel", S_IWUSR | S_IRUGO,
show_pwm_temp_sel, store_pwm_temp_sel, 0);
SENSOR_TEMPLATE(pwm_target_temp, "pwm%d_target_temp", S_IWUSR | S_IRUGO,
show_target_temp, store_target_temp, 0);
SENSOR_TEMPLATE(fan_target, "fan%d_target", S_IWUSR | S_IRUGO,
show_target_speed, store_target_speed, 0);
SENSOR_TEMPLATE(fan_tolerance, "fan%d_tolerance", S_IWUSR | S_IRUGO,
show_speed_tolerance, store_speed_tolerance, 0);
/* Smart Fan registers */
static ssize_t
show_weight_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", data->weight_temp[index][nr] * 1000);
}
static ssize_t
store_weight_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;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 255);
mutex_lock(&data->update_lock);
data->weight_temp[index][nr] = val;
nct6775_write_value(data, data->REG_WEIGHT_TEMP[index][nr], val);
mutex_unlock(&data->update_lock);
return count;
}
SENSOR_TEMPLATE(pwm_weight_temp_sel, "pwm%d_weight_temp_sel", S_IWUSR | S_IRUGO,
show_pwm_weight_temp_sel, store_pwm_weight_temp_sel, 0);
SENSOR_TEMPLATE_2(pwm_weight_temp_step, "pwm%d_weight_temp_step",
S_IWUSR | S_IRUGO, show_weight_temp, store_weight_temp, 0, 0);
SENSOR_TEMPLATE_2(pwm_weight_temp_step_tol, "pwm%d_weight_temp_step_tol",
S_IWUSR | S_IRUGO, show_weight_temp, store_weight_temp, 0, 1);
SENSOR_TEMPLATE_2(pwm_weight_temp_step_base, "pwm%d_weight_temp_step_base",
S_IWUSR | S_IRUGO, show_weight_temp, store_weight_temp, 0, 2);
SENSOR_TEMPLATE_2(pwm_weight_duty_step, "pwm%d_weight_duty_step",
S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0, 5);
SENSOR_TEMPLATE_2(pwm_weight_duty_base, "pwm%d_weight_duty_base",
S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0, 6);
static ssize_t
show_fan_time(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",
step_time_from_reg(data->fan_time[index][nr],
data->pwm_mode[nr]));
}
static ssize_t
store_fan_time(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;
val = step_time_to_reg(val, data->pwm_mode[nr]);
mutex_lock(&data->update_lock);
data->fan_time[index][nr] = val;
nct6775_write_value(data, data->REG_FAN_TIME[index][nr], val);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_auto_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);
return sprintf(buf, "%d\n", data->auto_pwm[sattr->nr][sattr->index]);
}
static ssize_t
store_auto_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 point = sattr->index;
unsigned long val;
int err;
u8 reg;
err = kstrtoul(buf, 10, &val);
if (err < 0)
return err;
if (val > 255)
return -EINVAL;
if (point == data->auto_pwm_num) {
if (data->kind != nct6775 && !val)
return -EINVAL;
if (data->kind != nct6779 && val)
val = 0xff;
}
mutex_lock(&data->update_lock);
data->auto_pwm[nr][point] = val;
if (point < data->auto_pwm_num) {
nct6775_write_value(data,
NCT6775_AUTO_PWM(data, nr, point),
data->auto_pwm[nr][point]);
} else {
switch (data->kind) {
case nct6775:
/* disable if needed (pwm == 0) */
reg = nct6775_read_value(data,
NCT6775_REG_CRITICAL_ENAB[nr]);
if (val)
reg |= 0x02;
else
reg &= ~0x02;
nct6775_write_value(data, NCT6775_REG_CRITICAL_ENAB[nr],
reg);
break;
case nct6776:
break; /* always enabled, nothing to do */
case nct6106:
case nct6779:
case nct6791:
case nct6792:
case nct6793:
case nct6795:
nct6775_write_value(data, data->REG_CRITICAL_PWM[nr],
val);
reg = nct6775_read_value(data,
data->REG_CRITICAL_PWM_ENABLE[nr]);
if (val == 255)
reg &= ~data->CRITICAL_PWM_ENABLE_MASK;
else
reg |= data->CRITICAL_PWM_ENABLE_MASK;
nct6775_write_value(data,
data->REG_CRITICAL_PWM_ENABLE[nr],
reg);
break;
}
}
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_auto_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 point = sattr->index;
/*
* We don't know for sure if the temperature is signed or unsigned.
* Assume it is unsigned.
*/
return sprintf(buf, "%d\n", data->auto_temp[nr][point] * 1000);
}
static ssize_t
store_auto_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 point = sattr->index;
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
if (val > 255000)
return -EINVAL;
mutex_lock(&data->update_lock);
data->auto_temp[nr][point] = DIV_ROUND_CLOSEST(val, 1000);
if (point < data->auto_pwm_num) {
nct6775_write_value(data,
NCT6775_AUTO_TEMP(data, nr, point),
data->auto_temp[nr][point]);
} else {
nct6775_write_value(data, data->REG_CRITICAL_TEMP[nr],
data->auto_temp[nr][point]);
}
mutex_unlock(&data->update_lock);
return count;
}
static umode_t nct6775_pwm_is_visible(struct kobject *kobj,
struct attribute *attr, int index)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nct6775_data *data = dev_get_drvdata(dev);
int pwm = index / 36; /* pwm index */
int nr = index % 36; /* attribute index */
if (!(data->has_pwm & BIT(pwm)))
return 0;
if ((nr >= 14 && nr <= 18) || nr == 21) /* weight */
if (!data->REG_WEIGHT_TEMP_SEL[pwm])
return 0;
if (nr == 19 && data->REG_PWM[3] == NULL) /* pwm_max */
return 0;
if (nr == 20 && data->REG_PWM[4] == NULL) /* pwm_step */
return 0;
if (nr == 21 && data->REG_PWM[6] == NULL) /* weight_duty_base */
return 0;
if (nr >= 22 && nr <= 35) { /* auto point */
int api = (nr - 22) / 2; /* auto point index */
if (api > data->auto_pwm_num)
return 0;
}
return attr->mode;
}
SENSOR_TEMPLATE_2(pwm_stop_time, "pwm%d_stop_time", S_IWUSR | S_IRUGO,
show_fan_time, store_fan_time, 0, 0);
SENSOR_TEMPLATE_2(pwm_step_up_time, "pwm%d_step_up_time", S_IWUSR | S_IRUGO,
show_fan_time, store_fan_time, 0, 1);
SENSOR_TEMPLATE_2(pwm_step_down_time, "pwm%d_step_down_time", S_IWUSR | S_IRUGO,
show_fan_time, store_fan_time, 0, 2);
SENSOR_TEMPLATE_2(pwm_start, "pwm%d_start", S_IWUSR | S_IRUGO, show_pwm,
store_pwm, 0, 1);
SENSOR_TEMPLATE_2(pwm_floor, "pwm%d_floor", S_IWUSR | S_IRUGO, show_pwm,
store_pwm, 0, 2);
SENSOR_TEMPLATE_2(pwm_temp_tolerance, "pwm%d_temp_tolerance", S_IWUSR | S_IRUGO,
show_temp_tolerance, store_temp_tolerance, 0, 0);
SENSOR_TEMPLATE_2(pwm_crit_temp_tolerance, "pwm%d_crit_temp_tolerance",
S_IWUSR | S_IRUGO, show_temp_tolerance, store_temp_tolerance,
0, 1);
SENSOR_TEMPLATE_2(pwm_max, "pwm%d_max", S_IWUSR | S_IRUGO, show_pwm, store_pwm,
0, 3);
SENSOR_TEMPLATE_2(pwm_step, "pwm%d_step", S_IWUSR | S_IRUGO, show_pwm,
store_pwm, 0, 4);
SENSOR_TEMPLATE_2(pwm_auto_point1_pwm, "pwm%d_auto_point1_pwm",
S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 0);
SENSOR_TEMPLATE_2(pwm_auto_point1_temp, "pwm%d_auto_point1_temp",
S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 0);
SENSOR_TEMPLATE_2(pwm_auto_point2_pwm, "pwm%d_auto_point2_pwm",
S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 1);
SENSOR_TEMPLATE_2(pwm_auto_point2_temp, "pwm%d_auto_point2_temp",
S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 1);
SENSOR_TEMPLATE_2(pwm_auto_point3_pwm, "pwm%d_auto_point3_pwm",
S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 2);
SENSOR_TEMPLATE_2(pwm_auto_point3_temp, "pwm%d_auto_point3_temp",
S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 2);
SENSOR_TEMPLATE_2(pwm_auto_point4_pwm, "pwm%d_auto_point4_pwm",
S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 3);
SENSOR_TEMPLATE_2(pwm_auto_point4_temp, "pwm%d_auto_point4_temp",
S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 3);
SENSOR_TEMPLATE_2(pwm_auto_point5_pwm, "pwm%d_auto_point5_pwm",
S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 4);
SENSOR_TEMPLATE_2(pwm_auto_point5_temp, "pwm%d_auto_point5_temp",
S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 4);
SENSOR_TEMPLATE_2(pwm_auto_point6_pwm, "pwm%d_auto_point6_pwm",
S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 5);
SENSOR_TEMPLATE_2(pwm_auto_point6_temp, "pwm%d_auto_point6_temp",
S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 5);
SENSOR_TEMPLATE_2(pwm_auto_point7_pwm, "pwm%d_auto_point7_pwm",
S_IWUSR | S_IRUGO, show_auto_pwm, store_auto_pwm, 0, 6);
SENSOR_TEMPLATE_2(pwm_auto_point7_temp, "pwm%d_auto_point7_temp",
S_IWUSR | S_IRUGO, show_auto_temp, store_auto_temp, 0, 6);
/*
* nct6775_pwm_is_visible uses the index into the following array
* to determine if attributes should be created or not.
* Any change in order or content must be matched.
*/
static struct sensor_device_template *nct6775_attributes_pwm_template[] = {
&sensor_dev_template_pwm,
&sensor_dev_template_pwm_mode,
&sensor_dev_template_pwm_enable,
&sensor_dev_template_pwm_temp_sel,
&sensor_dev_template_pwm_temp_tolerance,
&sensor_dev_template_pwm_crit_temp_tolerance,
&sensor_dev_template_pwm_target_temp,
&sensor_dev_template_fan_target,
&sensor_dev_template_fan_tolerance,
&sensor_dev_template_pwm_stop_time,
&sensor_dev_template_pwm_step_up_time,
&sensor_dev_template_pwm_step_down_time,
&sensor_dev_template_pwm_start,
&sensor_dev_template_pwm_floor,
&sensor_dev_template_pwm_weight_temp_sel, /* 14 */
&sensor_dev_template_pwm_weight_temp_step,
&sensor_dev_template_pwm_weight_temp_step_tol,
&sensor_dev_template_pwm_weight_temp_step_base,
&sensor_dev_template_pwm_weight_duty_step, /* 18 */
&sensor_dev_template_pwm_max, /* 19 */
&sensor_dev_template_pwm_step, /* 20 */
&sensor_dev_template_pwm_weight_duty_base, /* 21 */
&sensor_dev_template_pwm_auto_point1_pwm, /* 22 */
&sensor_dev_template_pwm_auto_point1_temp,
&sensor_dev_template_pwm_auto_point2_pwm,
&sensor_dev_template_pwm_auto_point2_temp,
&sensor_dev_template_pwm_auto_point3_pwm,
&sensor_dev_template_pwm_auto_point3_temp,
&sensor_dev_template_pwm_auto_point4_pwm,
&sensor_dev_template_pwm_auto_point4_temp,
&sensor_dev_template_pwm_auto_point5_pwm,
&sensor_dev_template_pwm_auto_point5_temp,
&sensor_dev_template_pwm_auto_point6_pwm,
&sensor_dev_template_pwm_auto_point6_temp,
&sensor_dev_template_pwm_auto_point7_pwm,
&sensor_dev_template_pwm_auto_point7_temp, /* 35 */
NULL
};
static const struct sensor_template_group nct6775_pwm_template_group = {
.templates = nct6775_attributes_pwm_template,
.is_visible = nct6775_pwm_is_visible,
.base = 1,
};
static ssize_t
cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct nct6775_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
}
static DEVICE_ATTR_RO(cpu0_vid);
/* Case open detection */
static ssize_t
clear_caseopen(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct nct6775_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(attr)->index - INTRUSION_ALARM_BASE;
unsigned long val;
u8 reg;
int ret;
if (kstrtoul(buf, 10, &val) || val != 0)
return -EINVAL;
mutex_lock(&data->update_lock);
/*
* Use CR registers to clear caseopen status.
* The CR registers are the same for all chips, and not all chips
* support clearing the caseopen status through "regular" registers.
*/
ret = superio_enter(data->sioreg);
if (ret) {
count = ret;
goto error;
}
superio_select(data->sioreg, NCT6775_LD_ACPI);
reg = superio_inb(data->sioreg, NCT6775_REG_CR_CASEOPEN_CLR[nr]);
reg |= NCT6775_CR_CASEOPEN_CLR_MASK[nr];
superio_outb(data->sioreg, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg);
reg &= ~NCT6775_CR_CASEOPEN_CLR_MASK[nr];
superio_outb(data->sioreg, NCT6775_REG_CR_CASEOPEN_CLR[nr], reg);
superio_exit(data->sioreg);
data->valid = false; /* Force cache refresh */
error:
mutex_unlock(&data->update_lock);
return count;
}
static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm,
clear_caseopen, INTRUSION_ALARM_BASE);
static SENSOR_DEVICE_ATTR(intrusion1_alarm, S_IWUSR | S_IRUGO, show_alarm,
clear_caseopen, INTRUSION_ALARM_BASE + 1);
static SENSOR_DEVICE_ATTR(intrusion0_beep, S_IWUSR | S_IRUGO, show_beep,
store_beep, INTRUSION_ALARM_BASE);
static SENSOR_DEVICE_ATTR(intrusion1_beep, S_IWUSR | S_IRUGO, show_beep,
store_beep, INTRUSION_ALARM_BASE + 1);
static SENSOR_DEVICE_ATTR(beep_enable, S_IWUSR | S_IRUGO, show_beep,
store_beep, BEEP_ENABLE_BASE);
static umode_t nct6775_other_is_visible(struct kobject *kobj,
struct attribute *attr, int index)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nct6775_data *data = dev_get_drvdata(dev);
if (index == 0 && !data->have_vid)
return 0;
if (index == 1 || index == 2) {
if (data->ALARM_BITS[INTRUSION_ALARM_BASE + index - 1] < 0)
return 0;
}
if (index == 3 || index == 4) {
if (data->BEEP_BITS[INTRUSION_ALARM_BASE + index - 3] < 0)
return 0;
}
return attr->mode;
}
/*
* nct6775_other_is_visible uses the index into the following array
* to determine if attributes should be created or not.
* Any change in order or content must be matched.
*/
static struct attribute *nct6775_attributes_other[] = {
&dev_attr_cpu0_vid.attr, /* 0 */
&sensor_dev_attr_intrusion0_alarm.dev_attr.attr, /* 1 */
&sensor_dev_attr_intrusion1_alarm.dev_attr.attr, /* 2 */
&sensor_dev_attr_intrusion0_beep.dev_attr.attr, /* 3 */
&sensor_dev_attr_intrusion1_beep.dev_attr.attr, /* 4 */
&sensor_dev_attr_beep_enable.dev_attr.attr, /* 5 */
NULL
};
static const struct attribute_group nct6775_group_other = {
.attrs = nct6775_attributes_other,
.is_visible = nct6775_other_is_visible,
};
static inline void nct6775_init_device(struct nct6775_data *data)
{
int i;
u8 tmp, diode;
/* Start monitoring if needed */
if (data->REG_CONFIG) {
tmp = nct6775_read_value(data, data->REG_CONFIG);
if (!(tmp & 0x01))
nct6775_write_value(data, data->REG_CONFIG, tmp | 0x01);
}
/* Enable temperature sensors if needed */
for (i = 0; i < NUM_TEMP; i++) {
if (!(data->have_temp & BIT(i)))
continue;
if (!data->reg_temp_config[i])
continue;
tmp = nct6775_read_value(data, data->reg_temp_config[i]);
if (tmp & 0x01)
nct6775_write_value(data, data->reg_temp_config[i],
tmp & 0xfe);
}
/* Enable VBAT monitoring if needed */
tmp = nct6775_read_value(data, data->REG_VBAT);
if (!(tmp & 0x01))
nct6775_write_value(data, data->REG_VBAT, tmp | 0x01);
diode = nct6775_read_value(data, data->REG_DIODE);
for (i = 0; i < data->temp_fixed_num; i++) {
if (!(data->have_temp_fixed & BIT(i)))
continue;
if ((tmp & (data->DIODE_MASK << i))) /* diode */
data->temp_type[i]
= 3 - ((diode >> i) & data->DIODE_MASK);
else /* thermistor */
data->temp_type[i] = 4;
}
}
static void
nct6775_check_fan_inputs(struct nct6775_data *data)
{
bool fan3pin, fan4pin, fan4min, fan5pin, fan6pin;
bool pwm3pin, pwm4pin, pwm5pin, pwm6pin;
int sioreg = data->sioreg;
int regval;
/* Store SIO_REG_ENABLE for use during resume */
superio_select(sioreg, NCT6775_LD_HWM);
data->sio_reg_enable = superio_inb(sioreg, SIO_REG_ENABLE);
/* fan4 and fan5 share some pins with the GPIO and serial flash */
if (data->kind == nct6775) {
regval = superio_inb(sioreg, 0x2c);
fan3pin = regval & BIT(6);
pwm3pin = regval & BIT(7);
/* On NCT6775, fan4 shares pins with the fdc interface */
fan4pin = !(superio_inb(sioreg, 0x2A) & 0x80);
fan4min = false;
fan5pin = false;
fan6pin = false;
pwm4pin = false;
pwm5pin = false;
pwm6pin = false;
} else if (data->kind == nct6776) {
bool gpok = superio_inb(sioreg, 0x27) & 0x80;
const char *board_vendor, *board_name;
board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
board_name = dmi_get_system_info(DMI_BOARD_NAME);
if (board_name && board_vendor &&
!strcmp(board_vendor, "ASRock")) {
/*
* Auxiliary fan monitoring is not enabled on ASRock
* Z77 Pro4-M if booted in UEFI Ultra-FastBoot mode.
* Observed with BIOS version 2.00.
*/
if (!strcmp(board_name, "Z77 Pro4-M")) {
if ((data->sio_reg_enable & 0xe0) != 0xe0) {
data->sio_reg_enable |= 0xe0;
superio_outb(sioreg, SIO_REG_ENABLE,
data->sio_reg_enable);
}
}
}
if (data->sio_reg_enable & 0x80)
fan3pin = gpok;
else
fan3pin = !(superio_inb(sioreg, 0x24) & 0x40);
if (data->sio_reg_enable & 0x40)
fan4pin = gpok;
else
fan4pin = superio_inb(sioreg, 0x1C) & 0x01;
if (data->sio_reg_enable & 0x20)
fan5pin = gpok;
else
fan5pin = superio_inb(sioreg, 0x1C) & 0x02;
fan4min = fan4pin;
fan6pin = false;
pwm3pin = fan3pin;
pwm4pin = false;
pwm5pin = false;
pwm6pin = false;
} else if (data->kind == nct6106) {
regval = superio_inb(sioreg, 0x24);
fan3pin = !(regval & 0x80);
pwm3pin = regval & 0x08;
fan4pin = false;
fan4min = false;
fan5pin = false;
fan6pin = false;
pwm4pin = false;
pwm5pin = false;
pwm6pin = false;
} else { /* NCT6779D, NCT6791D, NCT6792D, NCT6793D, or NCT6795D */
int regval_1b, regval_2a, regval_eb;
regval = superio_inb(sioreg, 0x1c);
fan3pin = !(regval & BIT(5));
fan4pin = !(regval & BIT(6));
fan5pin = !(regval & BIT(7));
pwm3pin = !(regval & BIT(0));
pwm4pin = !(regval & BIT(1));
pwm5pin = !(regval & BIT(2));
regval = superio_inb(sioreg, 0x2d);
switch (data->kind) {
case nct6791:
case nct6792:
fan6pin = regval & BIT(1);
pwm6pin = regval & BIT(0);
break;
case nct6793:
case nct6795:
regval_1b = superio_inb(sioreg, 0x1b);
regval_2a = superio_inb(sioreg, 0x2a);
if (!pwm5pin)
pwm5pin = regval & BIT(7);
fan6pin = regval & BIT(1);
pwm6pin = regval & BIT(0);
if (!fan5pin)
fan5pin = regval_1b & BIT(5);
superio_select(sioreg, NCT6775_LD_12);
regval_eb = superio_inb(sioreg, 0xeb);
if (!fan5pin)
fan5pin = regval_eb & BIT(5);
if (!pwm5pin)
pwm5pin = (regval_eb & BIT(4)) &&
!(regval_2a & BIT(0));
if (!fan6pin)
fan6pin = regval_eb & BIT(3);
if (!pwm6pin)
pwm6pin = regval_eb & BIT(2);
break;
default: /* NCT6779D */
fan6pin = false;
pwm6pin = false;
break;
}
fan4min = fan4pin;
}
/* fan 1 and 2 (0x03) are always present */
data->has_fan = 0x03 | (fan3pin << 2) | (fan4pin << 3) |
(fan5pin << 4) | (fan6pin << 5);
data->has_fan_min = 0x03 | (fan3pin << 2) | (fan4min << 3) |
(fan5pin << 4);
data->has_pwm = 0x03 | (pwm3pin << 2) | (pwm4pin << 3) |
(pwm5pin << 4) | (pwm6pin << 5);
}
static void add_temp_sensors(struct nct6775_data *data, const u16 *regp,
int *available, int *mask)
{
int i;
u8 src;
for (i = 0; i < data->pwm_num && *available; i++) {
int index;
if (!regp[i])
continue;
src = nct6775_read_value(data, regp[i]);
src &= 0x1f;
if (!src || (*mask & BIT(src)))
continue;
if (!(data->temp_mask & BIT(src)))
continue;
index = __ffs(*available);
nct6775_write_value(data, data->REG_TEMP_SOURCE[index], src);
*available &= ~BIT(index);
*mask |= BIT(src);
}
}
static int nct6775_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct nct6775_sio_data *sio_data = dev_get_platdata(dev);
struct nct6775_data *data;
struct resource *res;
int i, s, err = 0;
int src, mask, available;
const u16 *reg_temp, *reg_temp_over, *reg_temp_hyst, *reg_temp_config;
const u16 *reg_temp_mon, *reg_temp_alternate, *reg_temp_crit;
const u16 *reg_temp_crit_l = NULL, *reg_temp_crit_h = NULL;
int num_reg_temp, num_reg_temp_mon;
u8 cr2a;
struct attribute_group *group;
struct device *hwmon_dev;
int num_attr_groups = 0;
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!devm_request_region(&pdev->dev, res->start, IOREGION_LENGTH,
DRVNAME))
return -EBUSY;
data = devm_kzalloc(&pdev->dev, sizeof(struct nct6775_data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
data->kind = sio_data->kind;
data->sioreg = sio_data->sioreg;
data->addr = res->start;
mutex_init(&data->update_lock);
data->name = nct6775_device_names[data->kind];
data->bank = 0xff; /* Force initial bank selection */
platform_set_drvdata(pdev, data);
switch (data->kind) {
case nct6106:
data->in_num = 9;
data->pwm_num = 3;
data->auto_pwm_num = 4;
data->temp_fixed_num = 3;
data->num_temp_alarms = 6;
data->num_temp_beeps = 6;
data->fan_from_reg = fan_from_reg13;
data->fan_from_reg_min = fan_from_reg13;
data->temp_label = nct6776_temp_label;
data->temp_mask = NCT6776_TEMP_MASK;
data->REG_VBAT = NCT6106_REG_VBAT;
data->REG_DIODE = NCT6106_REG_DIODE;
data->DIODE_MASK = NCT6106_DIODE_MASK;
data->REG_VIN = NCT6106_REG_IN;
data->REG_IN_MINMAX[0] = NCT6106_REG_IN_MIN;
data->REG_IN_MINMAX[1] = NCT6106_REG_IN_MAX;
data->REG_TARGET = NCT6106_REG_TARGET;
data->REG_FAN = NCT6106_REG_FAN;
data->REG_FAN_MODE = NCT6106_REG_FAN_MODE;
data->REG_FAN_MIN = NCT6106_REG_FAN_MIN;
data->REG_FAN_PULSES = NCT6106_REG_FAN_PULSES;
data->FAN_PULSE_SHIFT = NCT6106_FAN_PULSE_SHIFT;
data->REG_FAN_TIME[0] = NCT6106_REG_FAN_STOP_TIME;
data->REG_FAN_TIME[1] = NCT6106_REG_FAN_STEP_UP_TIME;
data->REG_FAN_TIME[2] = NCT6106_REG_FAN_STEP_DOWN_TIME;
data->REG_PWM[0] = NCT6106_REG_PWM;
data->REG_PWM[1] = NCT6106_REG_FAN_START_OUTPUT;
data->REG_PWM[2] = NCT6106_REG_FAN_STOP_OUTPUT;
data->REG_PWM[5] = NCT6106_REG_WEIGHT_DUTY_STEP;
data->REG_PWM[6] = NCT6106_REG_WEIGHT_DUTY_BASE;
data->REG_PWM_READ = NCT6106_REG_PWM_READ;
data->REG_PWM_MODE = NCT6106_REG_PWM_MODE;
data->PWM_MODE_MASK = NCT6106_PWM_MODE_MASK;
data->REG_AUTO_TEMP = NCT6106_REG_AUTO_TEMP;
data->REG_AUTO_PWM = NCT6106_REG_AUTO_PWM;
data->REG_CRITICAL_TEMP = NCT6106_REG_CRITICAL_TEMP;
data->REG_CRITICAL_TEMP_TOLERANCE
= NCT6106_REG_CRITICAL_TEMP_TOLERANCE;
data->REG_CRITICAL_PWM_ENABLE = NCT6106_REG_CRITICAL_PWM_ENABLE;
data->CRITICAL_PWM_ENABLE_MASK
= NCT6106_CRITICAL_PWM_ENABLE_MASK;
data->REG_CRITICAL_PWM = NCT6106_REG_CRITICAL_PWM;
data->REG_TEMP_OFFSET = NCT6106_REG_TEMP_OFFSET;
data->REG_TEMP_SOURCE = NCT6106_REG_TEMP_SOURCE;
data->REG_TEMP_SEL = NCT6106_REG_TEMP_SEL;
data->REG_WEIGHT_TEMP_SEL = NCT6106_REG_WEIGHT_TEMP_SEL;
data->REG_WEIGHT_TEMP[0] = NCT6106_REG_WEIGHT_TEMP_STEP;
data->REG_WEIGHT_TEMP[1] = NCT6106_REG_WEIGHT_TEMP_STEP_TOL;
data->REG_WEIGHT_TEMP[2] = NCT6106_REG_WEIGHT_TEMP_BASE;
data->REG_ALARM = NCT6106_REG_ALARM;
data->ALARM_BITS = NCT6106_ALARM_BITS;
data->REG_BEEP = NCT6106_REG_BEEP;
data->BEEP_BITS = NCT6106_BEEP_BITS;
reg_temp = NCT6106_REG_TEMP;
reg_temp_mon = NCT6106_REG_TEMP_MON;
num_reg_temp = ARRAY_SIZE(NCT6106_REG_TEMP);
num_reg_temp_mon = ARRAY_SIZE(NCT6106_REG_TEMP_MON);
reg_temp_over = NCT6106_REG_TEMP_OVER;
reg_temp_hyst = NCT6106_REG_TEMP_HYST;
reg_temp_config = NCT6106_REG_TEMP_CONFIG;
reg_temp_alternate = NCT6106_REG_TEMP_ALTERNATE;
reg_temp_crit = NCT6106_REG_TEMP_CRIT;
reg_temp_crit_l = NCT6106_REG_TEMP_CRIT_L;
reg_temp_crit_h = NCT6106_REG_TEMP_CRIT_H;
break;
case nct6775:
data->in_num = 9;
data->pwm_num = 3;
data->auto_pwm_num = 6;
data->has_fan_div = true;
data->temp_fixed_num = 3;
data->num_temp_alarms = 3;
data->num_temp_beeps = 3;
data->ALARM_BITS = NCT6775_ALARM_BITS;
data->BEEP_BITS = NCT6775_BEEP_BITS;
data->fan_from_reg = fan_from_reg16;
data->fan_from_reg_min = fan_from_reg8;
data->target_temp_mask = 0x7f;
data->tolerance_mask = 0x0f;
data->speed_tolerance_limit = 15;
data->temp_label = nct6775_temp_label;
data->temp_mask = NCT6775_TEMP_MASK;
data->REG_CONFIG = NCT6775_REG_CONFIG;
data->REG_VBAT = NCT6775_REG_VBAT;
data->REG_DIODE = NCT6775_REG_DIODE;
data->DIODE_MASK = NCT6775_DIODE_MASK;
data->REG_VIN = NCT6775_REG_IN;
data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
data->REG_TARGET = NCT6775_REG_TARGET;
data->REG_FAN = NCT6775_REG_FAN;
data->REG_FAN_MODE = NCT6775_REG_FAN_MODE;
data->REG_FAN_MIN = NCT6775_REG_FAN_MIN;
data->REG_FAN_PULSES = NCT6775_REG_FAN_PULSES;
data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
data->REG_FAN_TIME[1] = NCT6775_REG_FAN_STEP_UP_TIME;
data->REG_FAN_TIME[2] = NCT6775_REG_FAN_STEP_DOWN_TIME;
data->REG_PWM[0] = NCT6775_REG_PWM;
data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
data->REG_PWM[2] = NCT6775_REG_FAN_STOP_OUTPUT;
data->REG_PWM[3] = NCT6775_REG_FAN_MAX_OUTPUT;
data->REG_PWM[4] = NCT6775_REG_FAN_STEP_OUTPUT;
data->REG_PWM[5] = NCT6775_REG_WEIGHT_DUTY_STEP;
data->REG_PWM_READ = NCT6775_REG_PWM_READ;
data->REG_PWM_MODE = NCT6775_REG_PWM_MODE;
data->PWM_MODE_MASK = NCT6775_PWM_MODE_MASK;
data->REG_AUTO_TEMP = NCT6775_REG_AUTO_TEMP;
data->REG_AUTO_PWM = NCT6775_REG_AUTO_PWM;
data->REG_CRITICAL_TEMP = NCT6775_REG_CRITICAL_TEMP;
data->REG_CRITICAL_TEMP_TOLERANCE
= NCT6775_REG_CRITICAL_TEMP_TOLERANCE;
data->REG_TEMP_OFFSET = NCT6775_REG_TEMP_OFFSET;
data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
data->REG_TEMP_SEL = NCT6775_REG_TEMP_SEL;
data->REG_WEIGHT_TEMP_SEL = NCT6775_REG_WEIGHT_TEMP_SEL;
data->REG_WEIGHT_TEMP[0] = NCT6775_REG_WEIGHT_TEMP_STEP;
data->REG_WEIGHT_TEMP[1] = NCT6775_REG_WEIGHT_TEMP_STEP_TOL;
data->REG_WEIGHT_TEMP[2] = NCT6775_REG_WEIGHT_TEMP_BASE;
data->REG_ALARM = NCT6775_REG_ALARM;
data->REG_BEEP = NCT6775_REG_BEEP;
reg_temp = NCT6775_REG_TEMP;
reg_temp_mon = NCT6775_REG_TEMP_MON;
num_reg_temp = ARRAY_SIZE(NCT6775_REG_TEMP);
num_reg_temp_mon = ARRAY_SIZE(NCT6775_REG_TEMP_MON);
reg_temp_over = NCT6775_REG_TEMP_OVER;
reg_temp_hyst = NCT6775_REG_TEMP_HYST;
reg_temp_config = NCT6775_REG_TEMP_CONFIG;
reg_temp_alternate = NCT6775_REG_TEMP_ALTERNATE;
reg_temp_crit = NCT6775_REG_TEMP_CRIT;
break;
case nct6776:
data->in_num = 9;
data->pwm_num = 3;
data->auto_pwm_num = 4;
data->has_fan_div = false;
data->temp_fixed_num = 3;
data->num_temp_alarms = 3;
data->num_temp_beeps = 6;
data->ALARM_BITS = NCT6776_ALARM_BITS;
data->BEEP_BITS = NCT6776_BEEP_BITS;
data->fan_from_reg = fan_from_reg13;
data->fan_from_reg_min = fan_from_reg13;
data->target_temp_mask = 0xff;
data->tolerance_mask = 0x07;
data->speed_tolerance_limit = 63;
data->temp_label = nct6776_temp_label;
data->temp_mask = NCT6776_TEMP_MASK;
data->REG_CONFIG = NCT6775_REG_CONFIG;
data->REG_VBAT = NCT6775_REG_VBAT;
data->REG_DIODE = NCT6775_REG_DIODE;
data->DIODE_MASK = NCT6775_DIODE_MASK;
data->REG_VIN = NCT6775_REG_IN;
data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
data->REG_TARGET = NCT6775_REG_TARGET;
data->REG_FAN = NCT6775_REG_FAN;
data->REG_FAN_MODE = NCT6775_REG_FAN_MODE;
data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
data->REG_FAN_PULSES = NCT6776_REG_FAN_PULSES;
data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
data->REG_FAN_TIME[1] = NCT6776_REG_FAN_STEP_UP_TIME;
data->REG_FAN_TIME[2] = NCT6776_REG_FAN_STEP_DOWN_TIME;
data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
data->REG_PWM[0] = NCT6775_REG_PWM;
data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
data->REG_PWM[2] = NCT6775_REG_FAN_STOP_OUTPUT;
data->REG_PWM[5] = NCT6775_REG_WEIGHT_DUTY_STEP;
data->REG_PWM[6] = NCT6776_REG_WEIGHT_DUTY_BASE;
data->REG_PWM_READ = NCT6775_REG_PWM_READ;
data->REG_PWM_MODE = NCT6776_REG_PWM_MODE;
data->PWM_MODE_MASK = NCT6776_PWM_MODE_MASK;
data->REG_AUTO_TEMP = NCT6775_REG_AUTO_TEMP;
data->REG_AUTO_PWM = NCT6775_REG_AUTO_PWM;
data->REG_CRITICAL_TEMP = NCT6775_REG_CRITICAL_TEMP;
data->REG_CRITICAL_TEMP_TOLERANCE
= NCT6775_REG_CRITICAL_TEMP_TOLERANCE;
data->REG_TEMP_OFFSET = NCT6775_REG_TEMP_OFFSET;
data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
data->REG_TEMP_SEL = NCT6775_REG_TEMP_SEL;
data->REG_WEIGHT_TEMP_SEL = NCT6775_REG_WEIGHT_TEMP_SEL;
data->REG_WEIGHT_TEMP[0] = NCT6775_REG_WEIGHT_TEMP_STEP;
data->REG_WEIGHT_TEMP[1] = NCT6775_REG_WEIGHT_TEMP_STEP_TOL;
data->REG_WEIGHT_TEMP[2] = NCT6775_REG_WEIGHT_TEMP_BASE;
data->REG_ALARM = NCT6775_REG_ALARM;
data->REG_BEEP = NCT6776_REG_BEEP;
reg_temp = NCT6775_REG_TEMP;
reg_temp_mon = NCT6775_REG_TEMP_MON;
num_reg_temp = ARRAY_SIZE(NCT6775_REG_TEMP);
num_reg_temp_mon = ARRAY_SIZE(NCT6775_REG_TEMP_MON);
reg_temp_over = NCT6775_REG_TEMP_OVER;
reg_temp_hyst = NCT6775_REG_TEMP_HYST;
reg_temp_config = NCT6776_REG_TEMP_CONFIG;
reg_temp_alternate = NCT6776_REG_TEMP_ALTERNATE;
reg_temp_crit = NCT6776_REG_TEMP_CRIT;
break;
case nct6779:
data->in_num = 15;
data->pwm_num = 5;
data->auto_pwm_num = 4;
data->has_fan_div = false;
data->temp_fixed_num = 6;
data->num_temp_alarms = 2;
data->num_temp_beeps = 2;
data->ALARM_BITS = NCT6779_ALARM_BITS;
data->BEEP_BITS = NCT6779_BEEP_BITS;
data->fan_from_reg = fan_from_reg13;
data->fan_from_reg_min = fan_from_reg13;
data->target_temp_mask = 0xff;
data->tolerance_mask = 0x07;
data->speed_tolerance_limit = 63;
data->temp_label = nct6779_temp_label;
data->temp_mask = NCT6779_TEMP_MASK;
data->REG_CONFIG = NCT6775_REG_CONFIG;
data->REG_VBAT = NCT6775_REG_VBAT;
data->REG_DIODE = NCT6775_REG_DIODE;
data->DIODE_MASK = NCT6775_DIODE_MASK;
data->REG_VIN = NCT6779_REG_IN;
data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
data->REG_TARGET = NCT6775_REG_TARGET;
data->REG_FAN = NCT6779_REG_FAN;
data->REG_FAN_MODE = NCT6775_REG_FAN_MODE;
data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
data->REG_FAN_PULSES = NCT6779_REG_FAN_PULSES;
data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
data->REG_FAN_TIME[1] = NCT6776_REG_FAN_STEP_UP_TIME;
data->REG_FAN_TIME[2] = NCT6776_REG_FAN_STEP_DOWN_TIME;
data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
data->REG_PWM[0] = NCT6775_REG_PWM;
data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
data->REG_PWM[2] = NCT6775_REG_FAN_STOP_OUTPUT;
data->REG_PWM[5] = NCT6775_REG_WEIGHT_DUTY_STEP;
data->REG_PWM[6] = NCT6776_REG_WEIGHT_DUTY_BASE;
data->REG_PWM_READ = NCT6775_REG_PWM_READ;
data->REG_PWM_MODE = NCT6776_REG_PWM_MODE;
data->PWM_MODE_MASK = NCT6776_PWM_MODE_MASK;
data->REG_AUTO_TEMP = NCT6775_REG_AUTO_TEMP;
data->REG_AUTO_PWM = NCT6775_REG_AUTO_PWM;
data->REG_CRITICAL_TEMP = NCT6775_REG_CRITICAL_TEMP;
data->REG_CRITICAL_TEMP_TOLERANCE
= NCT6775_REG_CRITICAL_TEMP_TOLERANCE;
data->REG_CRITICAL_PWM_ENABLE = NCT6779_REG_CRITICAL_PWM_ENABLE;
data->CRITICAL_PWM_ENABLE_MASK
= NCT6779_CRITICAL_PWM_ENABLE_MASK;
data->REG_CRITICAL_PWM = NCT6779_REG_CRITICAL_PWM;
data->REG_TEMP_OFFSET = NCT6779_REG_TEMP_OFFSET;
data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
data->REG_TEMP_SEL = NCT6775_REG_TEMP_SEL;
data->REG_WEIGHT_TEMP_SEL = NCT6775_REG_WEIGHT_TEMP_SEL;
data->REG_WEIGHT_TEMP[0] = NCT6775_REG_WEIGHT_TEMP_STEP;
data->REG_WEIGHT_TEMP[1] = NCT6775_REG_WEIGHT_TEMP_STEP_TOL;
data->REG_WEIGHT_TEMP[2] = NCT6775_REG_WEIGHT_TEMP_BASE;
data->REG_ALARM = NCT6779_REG_ALARM;
data->REG_BEEP = NCT6776_REG_BEEP;
reg_temp = NCT6779_REG_TEMP;
reg_temp_mon = NCT6779_REG_TEMP_MON;
num_reg_temp = ARRAY_SIZE(NCT6779_REG_TEMP);
num_reg_temp_mon = ARRAY_SIZE(NCT6779_REG_TEMP_MON);
reg_temp_over = NCT6779_REG_TEMP_OVER;
reg_temp_hyst = NCT6779_REG_TEMP_HYST;
reg_temp_config = NCT6779_REG_TEMP_CONFIG;
reg_temp_alternate = NCT6779_REG_TEMP_ALTERNATE;
reg_temp_crit = NCT6779_REG_TEMP_CRIT;
break;
case nct6791:
case nct6792:
case nct6793:
case nct6795:
data->in_num = 15;
data->pwm_num = 6;
data->auto_pwm_num = 4;
data->has_fan_div = false;
data->temp_fixed_num = 6;
data->num_temp_alarms = 2;
data->num_temp_beeps = 2;
data->ALARM_BITS = NCT6791_ALARM_BITS;
data->BEEP_BITS = NCT6779_BEEP_BITS;
data->fan_from_reg = fan_from_reg13;
data->fan_from_reg_min = fan_from_reg13;
data->target_temp_mask = 0xff;
data->tolerance_mask = 0x07;
data->speed_tolerance_limit = 63;
switch (data->kind) {
default:
case nct6791:
data->temp_label = nct6779_temp_label;
data->temp_mask = NCT6791_TEMP_MASK;
break;
case nct6792:
data->temp_label = nct6792_temp_label;
data->temp_mask = NCT6792_TEMP_MASK;
break;
case nct6793:
data->temp_label = nct6793_temp_label;
data->temp_mask = NCT6793_TEMP_MASK;
break;
case nct6795:
data->temp_label = nct6795_temp_label;
data->temp_mask = NCT6795_TEMP_MASK;
break;
}
data->REG_CONFIG = NCT6775_REG_CONFIG;
data->REG_VBAT = NCT6775_REG_VBAT;
data->REG_DIODE = NCT6775_REG_DIODE;
data->DIODE_MASK = NCT6775_DIODE_MASK;
data->REG_VIN = NCT6779_REG_IN;
data->REG_IN_MINMAX[0] = NCT6775_REG_IN_MIN;
data->REG_IN_MINMAX[1] = NCT6775_REG_IN_MAX;
data->REG_TARGET = NCT6775_REG_TARGET;
data->REG_FAN = NCT6779_REG_FAN;
data->REG_FAN_MODE = NCT6775_REG_FAN_MODE;
data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
data->REG_FAN_PULSES = NCT6779_REG_FAN_PULSES;
data->FAN_PULSE_SHIFT = NCT6775_FAN_PULSE_SHIFT;
data->REG_FAN_TIME[0] = NCT6775_REG_FAN_STOP_TIME;
data->REG_FAN_TIME[1] = NCT6776_REG_FAN_STEP_UP_TIME;
data->REG_FAN_TIME[2] = NCT6776_REG_FAN_STEP_DOWN_TIME;
data->REG_TOLERANCE_H = NCT6776_REG_TOLERANCE_H;
data->REG_PWM[0] = NCT6775_REG_PWM;
data->REG_PWM[1] = NCT6775_REG_FAN_START_OUTPUT;
data->REG_PWM[2] = NCT6775_REG_FAN_STOP_OUTPUT;
data->REG_PWM[5] = NCT6791_REG_WEIGHT_DUTY_STEP;
data->REG_PWM[6] = NCT6791_REG_WEIGHT_DUTY_BASE;
data->REG_PWM_READ = NCT6775_REG_PWM_READ;
data->REG_PWM_MODE = NCT6776_REG_PWM_MODE;
data->PWM_MODE_MASK = NCT6776_PWM_MODE_MASK;
data->REG_AUTO_TEMP = NCT6775_REG_AUTO_TEMP;
data->REG_AUTO_PWM = NCT6775_REG_AUTO_PWM;
data->REG_CRITICAL_TEMP = NCT6775_REG_CRITICAL_TEMP;
data->REG_CRITICAL_TEMP_TOLERANCE
= NCT6775_REG_CRITICAL_TEMP_TOLERANCE;
data->REG_CRITICAL_PWM_ENABLE = NCT6779_REG_CRITICAL_PWM_ENABLE;
data->CRITICAL_PWM_ENABLE_MASK
= NCT6779_CRITICAL_PWM_ENABLE_MASK;
data->REG_CRITICAL_PWM = NCT6779_REG_CRITICAL_PWM;
data->REG_TEMP_OFFSET = NCT6779_REG_TEMP_OFFSET;
data->REG_TEMP_SOURCE = NCT6775_REG_TEMP_SOURCE;
data->REG_TEMP_SEL = NCT6775_REG_TEMP_SEL;
data->REG_WEIGHT_TEMP_SEL = NCT6791_REG_WEIGHT_TEMP_SEL;
data->REG_WEIGHT_TEMP[0] = NCT6791_REG_WEIGHT_TEMP_STEP;
data->REG_WEIGHT_TEMP[1] = NCT6791_REG_WEIGHT_TEMP_STEP_TOL;
data->REG_WEIGHT_TEMP[2] = NCT6791_REG_WEIGHT_TEMP_BASE;
data->REG_ALARM = NCT6791_REG_ALARM;
if (data->kind == nct6791)
data->REG_BEEP = NCT6776_REG_BEEP;
else
data->REG_BEEP = NCT6792_REG_BEEP;
reg_temp = NCT6779_REG_TEMP;
num_reg_temp = ARRAY_SIZE(NCT6779_REG_TEMP);
if (data->kind == nct6791) {
reg_temp_mon = NCT6779_REG_TEMP_MON;
num_reg_temp_mon = ARRAY_SIZE(NCT6779_REG_TEMP_MON);
} else {
reg_temp_mon = NCT6792_REG_TEMP_MON;
num_reg_temp_mon = ARRAY_SIZE(NCT6792_REG_TEMP_MON);
}
reg_temp_over = NCT6779_REG_TEMP_OVER;
reg_temp_hyst = NCT6779_REG_TEMP_HYST;
reg_temp_config = NCT6779_REG_TEMP_CONFIG;
reg_temp_alternate = NCT6779_REG_TEMP_ALTERNATE;
reg_temp_crit = NCT6779_REG_TEMP_CRIT;
break;
default:
return -ENODEV;
}
data->have_in = BIT(data->in_num) - 1;
data->have_temp = 0;
/*
* On some boards, not all available temperature sources are monitored,
* even though some of the monitoring registers are unused.
* Get list of unused monitoring registers, then detect if any fan
* controls are configured to use unmonitored temperature sources.
* If so, assign the unmonitored temperature sources to available
* monitoring registers.
*/
mask = 0;
available = 0;
for (i = 0; i < num_reg_temp; i++) {
if (reg_temp[i] == 0)
continue;
src = nct6775_read_value(data, data->REG_TEMP_SOURCE[i]) & 0x1f;
if (!src || (mask & BIT(src)))
available |= BIT(i);
mask |= BIT(src);
}
/*
* Now find unmonitored temperature registers and enable monitoring
* if additional monitoring registers are available.
*/
add_temp_sensors(data, data->REG_TEMP_SEL, &available, &mask);
add_temp_sensors(data, data->REG_WEIGHT_TEMP_SEL, &available, &mask);
mask = 0;
s = NUM_TEMP_FIXED; /* First dynamic temperature attribute */
for (i = 0; i < num_reg_temp; i++) {
if (reg_temp[i] == 0)
continue;
src = nct6775_read_value(data, data->REG_TEMP_SOURCE[i]) & 0x1f;
if (!src || (mask & BIT(src)))
continue;
if (!(data->temp_mask & BIT(src))) {
dev_info(dev,
"Invalid temperature source %d at index %d, source register 0x%x, temp register 0x%x\n",
src, i, data->REG_TEMP_SOURCE[i], reg_temp[i]);
continue;
}
mask |= BIT(src);
/* Use fixed index for SYSTIN(1), CPUTIN(2), AUXTIN(3) */
if (src <= data->temp_fixed_num) {
data->have_temp |= BIT(src - 1);
data->have_temp_fixed |= BIT(src - 1);
data->reg_temp[0][src - 1] = reg_temp[i];
data->reg_temp[1][src - 1] = reg_temp_over[i];
data->reg_temp[2][src - 1] = reg_temp_hyst[i];
if (reg_temp_crit_h && reg_temp_crit_h[i])
data->reg_temp[3][src - 1] = reg_temp_crit_h[i];
else if (reg_temp_crit[src - 1])
data->reg_temp[3][src - 1]
= reg_temp_crit[src - 1];
if (reg_temp_crit_l && reg_temp_crit_l[i])
data->reg_temp[4][src - 1] = reg_temp_crit_l[i];
data->reg_temp_config[src - 1] = reg_temp_config[i];
data->temp_src[src - 1] = src;
continue;
}
if (s >= NUM_TEMP)
continue;
/* Use dynamic index for other sources */
data->have_temp |= BIT(s);
data->reg_temp[0][s] = reg_temp[i];
data->reg_temp[1][s] = reg_temp_over[i];
data->reg_temp[2][s] = reg_temp_hyst[i];
data->reg_temp_config[s] = reg_temp_config[i];
if (reg_temp_crit_h && reg_temp_crit_h[i])
data->reg_temp[3][s] = reg_temp_crit_h[i];
else if (reg_temp_crit[src - 1])
data->reg_temp[3][s] = reg_temp_crit[src - 1];
if (reg_temp_crit_l && reg_temp_crit_l[i])
data->reg_temp[4][s] = reg_temp_crit_l[i];
data->temp_src[s] = src;
s++;
}
/*
* Repeat with temperatures used for fan control.
* This set of registers does not support limits.
*/
for (i = 0; i < num_reg_temp_mon; i++) {
if (reg_temp_mon[i] == 0)
continue;
src = nct6775_read_value(data, data->REG_TEMP_SEL[i]) & 0x1f;
if (!src)
continue;
if (!(data->temp_mask & BIT(src))) {
dev_info(dev,
"Invalid temperature source %d at index %d, source register 0x%x, temp register 0x%x\n",
src, i, data->REG_TEMP_SEL[i],
reg_temp_mon[i]);
continue;
}
/*
* For virtual temperature sources, the 'virtual' temperature
* for each fan reflects a different temperature, and there
* are no duplicates.
*/
if (src != TEMP_SOURCE_VIRTUAL) {
if (mask & BIT(src))
continue;
mask |= BIT(src);
}
/* Use fixed index for SYSTIN(1), CPUTIN(2), AUXTIN(3) */
if (src <= data->temp_fixed_num) {
if (data->have_temp & BIT(src - 1))
continue;
data->have_temp |= BIT(src - 1);
data->have_temp_fixed |= BIT(src - 1);
data->reg_temp[0][src - 1] = reg_temp_mon[i];
data->temp_src[src - 1] = src;
continue;
}
if (s >= NUM_TEMP)
continue;
/* Use dynamic index for other sources */
data->have_temp |= BIT(s);
data->reg_temp[0][s] = reg_temp_mon[i];
data->temp_src[s] = src;
s++;
}
#ifdef USE_ALTERNATE
/*
* Go through the list of alternate temp registers and enable
* if possible.
* The temperature is already monitored if the respective bit in <mask>
* is set.
*/
for (i = 0; i < 32; i++) {
if (!(data->temp_mask & BIT(i + 1)))
continue;
if (!reg_temp_alternate[i])
continue;
if (mask & BIT(i + 1))
continue;
if (i < data->temp_fixed_num) {
if (data->have_temp & BIT(i))
continue;
data->have_temp |= BIT(i);
data->have_temp_fixed |= BIT(i);
data->reg_temp[0][i] = reg_temp_alternate[i];
if (i < num_reg_temp) {
data->reg_temp[1][i] = reg_temp_over[i];
data->reg_temp[2][i] = reg_temp_hyst[i];
}
data->temp_src[i] = i + 1;
continue;
}
if (s >= NUM_TEMP) /* Abort if no more space */
break;
data->have_temp |= BIT(s);
data->reg_temp[0][s] = reg_temp_alternate[i];
data->temp_src[s] = i + 1;
s++;
}
#endif /* USE_ALTERNATE */
/* Initialize the chip */
nct6775_init_device(data);
err = superio_enter(sio_data->sioreg);
if (err)
return err;
cr2a = superio_inb(sio_data->sioreg, 0x2a);
switch (data->kind) {
case nct6775:
data->have_vid = (cr2a & 0x40);
break;
case nct6776:
data->have_vid = (cr2a & 0x60) == 0x40;
break;
case nct6106:
case nct6779:
case nct6791:
case nct6792:
case nct6793:
case nct6795:
break;
}
/*
* Read VID value
* We can get the VID input values directly at logical device D 0xe3.
*/
if (data->have_vid) {
superio_select(sio_data->sioreg, NCT6775_LD_VID);
data->vid = superio_inb(sio_data->sioreg, 0xe3);
data->vrm = vid_which_vrm();
}
if (fan_debounce) {
u8 tmp;
superio_select(sio_data->sioreg, NCT6775_LD_HWM);
tmp = superio_inb(sio_data->sioreg,
NCT6775_REG_CR_FAN_DEBOUNCE);
switch (data->kind) {
case nct6106:
tmp |= 0xe0;
break;
case nct6775:
tmp |= 0x1e;
break;
case nct6776:
case nct6779:
tmp |= 0x3e;
break;
case nct6791:
case nct6792:
case nct6793:
case nct6795:
tmp |= 0x7e;
break;
}
superio_outb(sio_data->sioreg, NCT6775_REG_CR_FAN_DEBOUNCE,
tmp);
dev_info(&pdev->dev, "Enabled fan debounce for chip %s\n",
data->name);
}
nct6775_check_fan_inputs(data);
superio_exit(sio_data->sioreg);
/* Read fan clock dividers immediately */
nct6775_init_fan_common(dev, data);
/* Register sysfs hooks */
group = nct6775_create_attr_group(dev, &nct6775_pwm_template_group,
data->pwm_num);
if (IS_ERR(group))
return PTR_ERR(group);
data->groups[num_attr_groups++] = group;
group = nct6775_create_attr_group(dev, &nct6775_in_template_group,
fls(data->have_in));
if (IS_ERR(group))
return PTR_ERR(group);
data->groups[num_attr_groups++] = group;
group = nct6775_create_attr_group(dev, &nct6775_fan_template_group,
fls(data->has_fan));
if (IS_ERR(group))
return PTR_ERR(group);
data->groups[num_attr_groups++] = group;
group = nct6775_create_attr_group(dev, &nct6775_temp_template_group,
fls(data->have_temp));
if (IS_ERR(group))
return PTR_ERR(group);
data->groups[num_attr_groups++] = group;
data->groups[num_attr_groups++] = &nct6775_group_other;
hwmon_dev = devm_hwmon_device_register_with_groups(dev, data->name,
data, data->groups);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
static void nct6791_enable_io_mapping(int sioaddr)
{
int val;
val = superio_inb(sioaddr, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE);
if (val & 0x10) {
pr_info("Enabling hardware monitor logical device mappings.\n");
superio_outb(sioaddr, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE,
val & ~0x10);
}
}
static int __maybe_unused nct6775_suspend(struct device *dev)
{
struct nct6775_data *data = nct6775_update_device(dev);
mutex_lock(&data->update_lock);
data->vbat = nct6775_read_value(data, data->REG_VBAT);
if (data->kind == nct6775) {
data->fandiv1 = nct6775_read_value(data, NCT6775_REG_FANDIV1);
data->fandiv2 = nct6775_read_value(data, NCT6775_REG_FANDIV2);
}
mutex_unlock(&data->update_lock);
return 0;
}
static int __maybe_unused nct6775_resume(struct device *dev)
{
struct nct6775_data *data = dev_get_drvdata(dev);
int sioreg = data->sioreg;
int i, j, err = 0;
u8 reg;
mutex_lock(&data->update_lock);
data->bank = 0xff; /* Force initial bank selection */
err = superio_enter(sioreg);
if (err)
goto abort;
superio_select(sioreg, NCT6775_LD_HWM);
reg = superio_inb(sioreg, SIO_REG_ENABLE);
if (reg != data->sio_reg_enable)
superio_outb(sioreg, SIO_REG_ENABLE, data->sio_reg_enable);
if (data->kind == nct6791 || data->kind == nct6792 ||
data->kind == nct6793 || data->kind == nct6795)
nct6791_enable_io_mapping(sioreg);
superio_exit(sioreg);
/* Restore limits */
for (i = 0; i < data->in_num; i++) {
if (!(data->have_in & BIT(i)))
continue;
nct6775_write_value(data, data->REG_IN_MINMAX[0][i],
data->in[i][1]);
nct6775_write_value(data, data->REG_IN_MINMAX[1][i],
data->in[i][2]);
}
for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) {
if (!(data->has_fan_min & BIT(i)))
continue;
nct6775_write_value(data, data->REG_FAN_MIN[i],
data->fan_min[i]);
}
for (i = 0; i < NUM_TEMP; i++) {
if (!(data->have_temp & BIT(i)))
continue;
for (j = 1; j < ARRAY_SIZE(data->reg_temp); j++)
if (data->reg_temp[j][i])
nct6775_write_temp(data, data->reg_temp[j][i],
data->temp[j][i]);
}
/* Restore other settings */
nct6775_write_value(data, data->REG_VBAT, data->vbat);
if (data->kind == nct6775) {
nct6775_write_value(data, NCT6775_REG_FANDIV1, data->fandiv1);
nct6775_write_value(data, NCT6775_REG_FANDIV2, data->fandiv2);
}
abort:
/* Force re-reading all values */
data->valid = false;
mutex_unlock(&data->update_lock);
return err;
}
static SIMPLE_DEV_PM_OPS(nct6775_dev_pm_ops, nct6775_suspend, nct6775_resume);
static struct platform_driver nct6775_driver = {
.driver = {
.name = DRVNAME,
.pm = &nct6775_dev_pm_ops,
},
.probe = nct6775_probe,
};
/* nct6775_find() looks for a '627 in the Super-I/O config space */
static int __init nct6775_find(int sioaddr, struct nct6775_sio_data *sio_data)
{
u16 val;
int err;
int addr;
err = superio_enter(sioaddr);
if (err)
return err;
val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8) |
superio_inb(sioaddr, SIO_REG_DEVID + 1);
if (force_id && val != 0xffff)
val = force_id;
switch (val & SIO_ID_MASK) {
case SIO_NCT6106_ID:
sio_data->kind = nct6106;
break;
case SIO_NCT6775_ID:
sio_data->kind = nct6775;
break;
case SIO_NCT6776_ID:
sio_data->kind = nct6776;
break;
case SIO_NCT6779_ID:
sio_data->kind = nct6779;
break;
case SIO_NCT6791_ID:
sio_data->kind = nct6791;
break;
case SIO_NCT6792_ID:
sio_data->kind = nct6792;
break;
case SIO_NCT6793_ID:
sio_data->kind = nct6793;
break;
case SIO_NCT6795_ID:
sio_data->kind = nct6795;
break;
default:
if (val != 0xffff)
pr_debug("unsupported chip ID: 0x%04x\n", val);
superio_exit(sioaddr);
return -ENODEV;
}
/* We have a known chip, find the HWM I/O address */
superio_select(sioaddr, NCT6775_LD_HWM);
val = (superio_inb(sioaddr, SIO_REG_ADDR) << 8)
| superio_inb(sioaddr, SIO_REG_ADDR + 1);
addr = val & IOREGION_ALIGNMENT;
if (addr == 0) {
pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n");
superio_exit(sioaddr);
return -ENODEV;
}
/* Activate logical device if needed */
val = superio_inb(sioaddr, SIO_REG_ENABLE);
if (!(val & 0x01)) {
pr_warn("Forcibly enabling Super-I/O. Sensor is probably unusable.\n");
superio_outb(sioaddr, SIO_REG_ENABLE, val | 0x01);
}
if (sio_data->kind == nct6791 || sio_data->kind == nct6792 ||
sio_data->kind == nct6793 || sio_data->kind == nct6795)
nct6791_enable_io_mapping(sioaddr);
superio_exit(sioaddr);
pr_info("Found %s or compatible chip at %#x:%#x\n",
nct6775_sio_names[sio_data->kind], sioaddr, addr);
sio_data->sioreg = sioaddr;
return addr;
}
/*
* when Super-I/O functions move to a separate file, the Super-I/O
* bus will manage the lifetime of the device and this module will only keep
* track of the nct6775 driver. But since we use platform_device_alloc(), we
* must keep track of the device
*/
static struct platform_device *pdev[2];
static int __init sensors_nct6775_init(void)
{
int i, err;
bool found = false;
int address;
struct resource res;
struct nct6775_sio_data sio_data;
int sioaddr[2] = { 0x2e, 0x4e };
err = platform_driver_register(&nct6775_driver);
if (err)
return err;
/*
* initialize sio_data->kind and sio_data->sioreg.
*
* when Super-I/O functions move to a separate file, the Super-I/O
* driver will probe 0x2e and 0x4e and auto-detect the presence of a
* nct6775 hardware monitor, and call probe()
*/
for (i = 0; i < ARRAY_SIZE(pdev); i++) {
address = nct6775_find(sioaddr[i], &sio_data);
if (address <= 0)
continue;
found = true;
pdev[i] = platform_device_alloc(DRVNAME, address);
if (!pdev[i]) {
err = -ENOMEM;
goto exit_device_unregister;
}
err = platform_device_add_data(pdev[i], &sio_data,
sizeof(struct nct6775_sio_data));
if (err)
goto exit_device_put;
memset(&res, 0, sizeof(res));
res.name = DRVNAME;
res.start = address + IOREGION_OFFSET;
res.end = address + IOREGION_OFFSET + IOREGION_LENGTH - 1;
res.flags = IORESOURCE_IO;
err = acpi_check_resource_conflict(&res);
if (err) {
platform_device_put(pdev[i]);
pdev[i] = NULL;
continue;
}
err = platform_device_add_resources(pdev[i], &res, 1);
if (err)
goto exit_device_put;
/* platform_device_add calls probe() */
err = platform_device_add(pdev[i]);
if (err)
goto exit_device_put;
}
if (!found) {
err = -ENODEV;
goto exit_unregister;
}
return 0;
exit_device_put:
platform_device_put(pdev[i]);
exit_device_unregister:
while (--i >= 0) {
if (pdev[i])
platform_device_unregister(pdev[i]);
}
exit_unregister:
platform_driver_unregister(&nct6775_driver);
return err;
}
static void __exit sensors_nct6775_exit(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(pdev); i++) {
if (pdev[i])
platform_device_unregister(pdev[i]);
}
platform_driver_unregister(&nct6775_driver);
}
MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
MODULE_DESCRIPTION("Driver for NCT6775F and compatible chips");
MODULE_LICENSE("GPL");
module_init(sensors_nct6775_init);
module_exit(sensors_nct6775_exit);
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