From 9cf9f2ec36c2734bb8f681b032d62da02b7dce6b Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Sun, 11 Mar 2012 13:12:28 -0700 Subject: [PATCH 1/1] nct6775: initial version Signed-off-by: Guenter Roeck --- Makefile | 36 + lm75.h | 50 + nct6775.c | 3084 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 3170 insertions(+) create mode 100644 Makefile create mode 100644 lm75.h create mode 100644 nct6775.c diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..f0f3bd5 --- /dev/null +++ b/Makefile @@ -0,0 +1,36 @@ +# For building for the current running version of Linux +TARGET := $(shell uname -r) +HOME=$(shell pwd) +# Or for a specific version +#TARGET := 2.6.33.5 +KERNEL_MODULES := /lib/modules/$(TARGET) +# KERNEL_BUILD := $(KERNEL_MODULES)/build +KERNEL_BUILD := /usr/src/linux-headers-$(TARGET) + +#SYSTEM_MAP := $(KERNEL_BUILD)/System.map +SYSTEM_MAP := /boot/System.map-$(TARGET) + +DRIVER := nct6775 + +# Directory below /lib/modules/$(TARGET)/kernel into which to install +# the module: +MOD_SUBDIR = drivers/hwmon + +obj-m := $(DRIVER).o + +MAKEFLAGS += --no-print-directory + +.PHONY: all install modules modules_install clean + +all: modules + +# Targets for running make directly in the external module directory: + +modules clean: + @$(MAKE) -C $(KERNEL_BUILD) M=$(CURDIR) $@ EXTRA_CFLAGS=-g + +install: modules_install + +modules_install: + cp $(DRIVER).ko $(KERNEL_MODULES)/kernel/$(MOD_SUBDIR) + depmod -a -F $(SYSTEM_MAP) $(TARGET) diff --git a/lm75.h b/lm75.h new file mode 100644 index 0000000..e547a3e --- /dev/null +++ b/lm75.h @@ -0,0 +1,50 @@ +/* + lm75.h - Part of lm_sensors, Linux kernel modules for hardware + monitoring + Copyright (c) 2003 Mark M. Hoffman + + 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. +*/ + +/* + This file contains common code for encoding/decoding LM75 type + temperature readings, which are emulated by many of the chips + we support. As the user is unlikely to load more than one driver + which contains this code, we don't worry about the wasted space. +*/ + +#include + +/* straight from the datasheet */ +#define LM75_TEMP_MIN (-55000) +#define LM75_TEMP_MAX 125000 +#define LM75_SHUTDOWN 0x01 + +/* TEMP: 0.001C/bit (-55C to +125C) + REG: (0.5C/bit, two's complement) << 7 */ +static inline u16 LM75_TEMP_TO_REG(long temp) +{ + int ntemp = SENSORS_LIMIT(temp, LM75_TEMP_MIN, LM75_TEMP_MAX); + ntemp += (ntemp<0 ? -250 : 250); + return (u16)((ntemp / 500) << 7); +} + +static inline int LM75_TEMP_FROM_REG(u16 reg) +{ + /* use integer division instead of equivalent right shift to + guarantee arithmetic shift and preserve the sign */ + return ((s16)reg / 128) * 500; +} + diff --git a/nct6775.c b/nct6775.c new file mode 100644 index 0000000..8a7118a --- /dev/null +++ b/nct6775.c @@ -0,0 +1,3084 @@ +/* + * nct6775 - Driver for the hardware monitoring functionality of + * Nuvoton NCT677x Super-I/O chips + * + * Copyright (C) 2012 Guenter Roeck + * + * Derived from w83627ehf driver + * Copyright (C) 2005-2011 Jean Delvare + * Copyright (C) 2006 Yuan Mu (Winbond), + * Rudolf Marek + * David Hubbard + * Daniel J Blueman + * Copyright (C) 2010 Sheng-Yuan Huang (Nuvoton) (PS00) + * + * Shamelessly ripped from the w83627hf driver + * Copyright (C) 2003 Mark Studebaker + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * Supports the following chips: + * + * Chip #vin #fan #pwm #temp chip IDs man ID + * nct6775f 9 4 3 9 0xb470 0xc1 0x5ca3 + * nct6776f 9 5 3 9 0xc330 0xc1 0x5ca3 + * nct6779d 15 5 5 8 0xc560 0xc1 0x5ca3 + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "lm75.h" + +enum kinds { nct6775, nct6776, nct6779, }; + +/* used to set data->name = nct6775_device_names[data->sio_kind] */ +static const char * const nct6775_device_names[] = { + "nct6775", + "nct6776", + "nct6779", +}; + +static unsigned short force_id; +module_param(force_id, ushort, 0); +MODULE_PARM_DESC(force_id, "Override the detected device ID"); + +static unsigned short fan_debounce; +module_param(fan_debounce, ushort, 0); +MODULE_PARM_DESC(fan_debounce, "Enable debouncing for fan RPM signal"); + +#define DRVNAME "nct6775" + +/* + * Super-I/O constants and functions + */ + +#define NCT6775_LD_HWM 0x0b +#define NCT6775_LD_VID 0x0d + +#define SIO_REG_LDSEL 0x07 /* Logical device select */ +#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ +#define SIO_REG_EN_VRM10 0x2C /* GPIO3, GPIO4 selection */ +#define SIO_REG_ENABLE 0x30 /* Logical device enable */ +#define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ +#define SIO_REG_VID_CTRL 0xF0 /* VID control */ +#define SIO_REG_VID_DATA 0xF1 /* VID data */ + +#define SIO_NCT6775_ID 0xb470 +#define SIO_NCT6776_ID 0xc330 +#define SIO_NCT6779_ID 0xc560 +#define SIO_ID_MASK 0xFFF0 + +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 void +superio_enter(int ioreg) +{ + outb(0x87, ioreg); + outb(0x87, ioreg); +} + +static inline void +superio_exit(int ioreg) +{ + outb(0xaa, ioreg); + outb(0x02, ioreg); + outb(0x02, ioreg + 1); +} + +/* + * 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 + */ + +static const u16 NCT6775_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d }; + +/* Voltage min/max registers for nr=7..14 are in bank 5 */ +#define NCT6775_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \ + (0x554 + (((nr) - 7) * 2))) +#define NCT6775_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \ + (0x555 + (((nr) - 7) * 2))) + +static const u16 NCT6775_REG_IN[] = { + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x550, 0x551, 0x552 +}; + +static const u16 NCT6779_REG_IN[] = { + 0x480, 0x481, 0x482, 0x483, 0x484, 0x485, 0x486, 0x487, + 0x488, 0x489, 0x48a, 0x48b, 0x48c, 0x48d, 0x48e +}; + +#define NCT6775_REG_VBAT 0x5D +#define NCT6775_REG_DIODE 0x59 + +#define NCT6775_REG_FANDIV1 0x506 +#define NCT6775_REG_FANDIV2 0x507 + +#define NCT6775_REG_FAN_DEBOUNCE 0xf0 + +#define NCT6775_REG_ALARM1 0x459 +#define NCT6775_REG_ALARM2 0x45A +#define NCT6775_REG_ALARM3 0x45B +#define NCT6779_REG_ALARM4 0x568 + +#define NCT6775_REG_CASEOPEN_DET 0x42 /* SMI STATUS #2 */ +#define NCT6775_REG_CASEOPEN_CLR 0x46 /* SMI MASK #3 */ + +/* DC or PWM output fan configuration */ +static const u8 NCT6775_REG_PWM_ENABLE[] = { + 0x04, /* SYSFAN output mode */ + 0x04, /* CPUFAN output mode */ + 0x12, /* AUXFAN output mode */ +}; + +static const u8 NCT6775_PWM_MODE_SHIFT[] = { 0, 1, 0 }; + +/* Advanced Fan control, some values are common for all fans */ + +static const u16 NCT6775_REG_TARGET[] = { 0x101, 0x201, 0x301, 0x801, 0x901 }; +static const u16 NCT6775_REG_FAN_MODE[] = { 0x102, 0x202, 0x302, 0x802, 0x902 }; +static const u16 NCT6775_REG_FAN_STEP_DOWN_TIME[] = { + 0x103, 0x203, 0x303, 0x803, 0x903 }; +static const u16 NCT6775_REG_FAN_STEP_UP_TIME[] = { + 0x104, 0x204, 0x304, 0x804, 0x904 }; +static const u16 NCT6775_REG_FAN_STOP_OUTPUT[] = { + 0x105, 0x205, 0x305, 0x805, 0x905 }; +static const u16 NCT6775_REG_FAN_START_OUTPUT[] = { + 0x106, 0x206, 0x306, 0x806, 0x906 }; +static const u16 NCT6775_REG_FAN_STOP_TIME[] = { + 0x107, 0x207, 0x307, 0x807, 0x907 }; +static const u16 NCT6775_REG_PWM[] = { 0x109, 0x209, 0x309, 0x809, 0x909 }; + +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[] = { 0x630, 0x632, 0x634, 0x636, 0x638 }; + +static const u16 NCT6776_REG_FAN_MIN[] = { 0x63a, 0x63c, 0x63e, 0x640, 0x642}; + +static const u16 NCT6779_REG_TOLERANCE_H[] = { + 0x10c, 0x20c, 0x30c, 0x40c, 0x50c }; + +static const u16 NCT6779_REG_FAN[] = { 0x4c0, 0x4c2, 0x4c4, 0x4c6, 0x4c8 }; + +static const u16 NCT6775_REG_TEMP[] + = { 0x27, 0x150, 0x250, 0x73, 0x75, 0x77, 0x62b, 0x62c, 0x62d }; +static const u16 NCT6775_REG_TEMP_CONFIG[] + = { 0, 0x152, 0x252, 0, 0, 0, 0x628, 0x629, 0x62A }; +static const u16 NCT6775_REG_TEMP_HYST[] + = { 0x3a, 0x153, 0x253, 0, 0, 0, 0x673, 0x678, 0x67D }; +static const u16 NCT6775_REG_TEMP_OVER[] + = { 0x39, 0x155, 0x255, 0, 0, 0, 0x672, 0x677, 0x67C }; +static const u16 NCT6775_REG_TEMP_SOURCE[] + = { 0x621, 0x622, 0x623, 0x100, 0x200, 0x300, 0x624, 0x625, 0x626 }; + +static const u16 NCT6776_REG_TEMP_CONFIG[] + = { 0x18, 0x152, 0x252, 0, 0, 0, 0x628, 0x629, 0x62A }; + +static const u16 NCT6779_REG_TEMP[] + = { 0x27, 0x150, 0x73, 0x75, 0x77, 0x79, 0x7b }; +static const u16 NCT6779_REG_TEMP_CONFIG[] + = { 0x18, 0x152, 0, 0, 0, 0, 0 }; +static const u16 NCT6779_REG_TEMP_SOURCE[] + = { 0x621, 0x622, 0x100, 0x200, 0x300, 0x800, 0x900 }; +static const u16 NCT6779_REG_TEMP_HYST[] + = { 0x3a, 0x153, 0, 0, 0, 0, 0, 0, 0 }; +static const u16 NCT6779_REG_TEMP_OVER[] + = { 0x39, 0x155, 0, 0, 0, 0, 0, 0, 0 }; + +static const u16 NCT6775_REG_AUTO_BASE[] = { + 0x100, 0x200, 0x300, 0x800, 0x900 }; + +#define NCT6775_REG_AUTO_TEMP(nr, p) (NCT6775_REG_AUTO_BASE[nr] + 0x21 + (p)) +#define NCT6775_REG_AUTO_PWM(nr, p) (NCT6775_REG_AUTO_BASE[nr] + 0x27 + (p)) + +static const u16 NCT6775_REG_CRITICAL_ENAB[] = { 0x134, 0x234, 0x334 }; +static const u16 NCT6775_REG_CRITICAL_TEMP[] = { + 0x135, 0x235, 0x335, 0x835, 0x935 }; +static const u16 NCT6775_REG_CRITICAL_TEMP_TOLERANCE[] = { + 0x138, 0x238, 0x338, 0x838, 0x938 }; + +static const u16 NCT6779_REG_CRITICAL_PWM_ENABLE[] = { + 0x136, 0x236, 0x336, 0x836, 0x936 }; +static const u16 NCT6779_REG_CRITICAL_PWM[] = { + 0x137, 0x237, 0x337, 0x837, 0x937 }; + +static const char *const nct6775_temp_label[] = { + "", + "SYSTIN", + "CPUTIN", + "AUXTIN", + "AMD SB-TSI", + "PECI Agent 0", + "PECI Agent 1", + "PECI Agent 2", + "PECI Agent 3", + "PECI Agent 4", + "PECI Agent 5", + "PECI Agent 6", + "PECI Agent 7", + "PCH_CHIP_CPU_MAX_TEMP", + "PCH_CHIP_TEMP", + "PCH_CPU_TEMP", + "PCH_MCH_TEMP", + "PCH_DIM0_TEMP", + "PCH_DIM1_TEMP", + "PCH_DIM2_TEMP", + "PCH_DIM3_TEMP" +}; + +static const char *const nct6776_temp_label[] = { + "", + "SYSTIN", + "CPUTIN", + "AUXTIN", + "SMBUSMASTER 0", + "SMBUSMASTER 1", + "SMBUSMASTER 2", + "SMBUSMASTER 3", + "SMBUSMASTER 4", + "SMBUSMASTER 5", + "SMBUSMASTER 6", + "SMBUSMASTER 7", + "PECI Agent 0", + "PECI Agent 1", + "PCH_CHIP_CPU_MAX_TEMP", + "PCH_CHIP_TEMP", + "PCH_CPU_TEMP", + "PCH_MCH_TEMP", + "PCH_DIM0_TEMP", + "PCH_DIM1_TEMP", + "PCH_DIM2_TEMP", + "PCH_DIM3_TEMP", + "BYTE_TEMP" +}; + +static const 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" +}; + +#define NUM_REG_TEMP ARRAY_SIZE(NCT6775_REG_TEMP) + +static int is_word_sized(u16 reg) +{ + return ((((reg & 0xff00) == 0x100 + || (reg & 0xff00) == 0x200) + && ((reg & 0x00ff) == 0x50 + || (reg & 0x00ff) == 0x53 + || (reg & 0x00ff) == 0x55)) + || (reg & 0xfff0) == 0x630 + || (reg & 0xfff0) == 0x4c0 + || reg == 0x640 || reg == 0x642 + || ((reg & 0xfff0) == 0x650 + && (reg & 0x000f) >= 0x06) + || reg == 0x73 || reg == 0x75 || reg == 0x77 || reg == 0x77 + || reg == 0x79 + ); +} + +/* + * Conversions + */ + +/* 1 is PWM mode, output in ms */ +static inline unsigned int step_time_from_reg(u8 reg, u8 mode) +{ + return mode ? 100 * reg : 400 * reg; +} + +static inline u8 step_time_to_reg(unsigned int msec, u8 mode) +{ + return SENSORS_LIMIT((mode ? (msec + 50) / 100 : + (msec + 200) / 400), 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 inline unsigned int +div_from_reg(u8 reg) +{ + return 1 << reg; +} + +/* + * Some of the voltage inputs have internal scaling, the tables below + * contain 8 (the ADC LSB in mV) * scaling factor * 100 + */ +static const u16 scale_in[15] = { + 800, 800, 1600, 1600, 800, 800, 800, 1600, 1600, 800, 800, 800, 800, + 800, 800 +}; + +static inline long in_from_reg(u8 reg, u8 nr) +{ + return DIV_ROUND_CLOSEST(reg * scale_in[nr], 100); +} + +static inline u8 in_to_reg(u32 val, u8 nr) +{ + return SENSORS_LIMIT(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 */ + const char *name; + + struct device *hwmon_dev; + struct mutex lock; + + u16 reg_temp[NUM_REG_TEMP]; + u16 reg_temp_over[NUM_REG_TEMP]; + u16 reg_temp_hyst[NUM_REG_TEMP]; + u16 reg_temp_config[NUM_REG_TEMP]; + u8 temp_src[NUM_REG_TEMP]; + const char * const *temp_label; + + const u16 *REG_VIN; + + const u16 *REG_TARGET; + const u16 *REG_FAN; + const u16 *REG_FAN_MIN; + const u16 *REG_FAN_START_OUTPUT; + const u16 *REG_FAN_STOP_OUTPUT; + const u16 *REG_FAN_MAX_OUTPUT; + const u16 *REG_FAN_STEP_OUTPUT; + + 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; + char valid; /* !=0 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]; /* Register value */ + u8 in_max[15]; /* Register value */ + u8 in_min[15]; /* Register value */ + unsigned int rpm[5]; + u16 fan_min[5]; + u8 fan_div[5]; + u8 has_pwm; + u8 has_fan; /* some fan inputs can be disabled */ + u8 has_fan_min; /* some fans don't have min register */ + bool has_fan_div; + u8 temp_type[3]; + s16 temp[9]; + s16 temp_max[9]; + s16 temp_max_hyst[9]; + u32 alarms; + u8 caseopen; + + u8 pwm_mode[5]; /* 0->DC variable voltage, 1->PWM variable duty cycle */ + u8 pwm_enable[5]; /* 1->manual + * 2->thermal cruise mode (also called SmartFan I) + * 3->fan speed cruise mode + * 4->variable thermal cruise (also called + * SmartFan III) + * 5->enhanced variable thermal cruise (also called + * SmartFan IV) + */ + u8 pwm_num; /* number of pwm */ + u8 pwm[5]; + u8 target_temp[5]; + u8 tolerance[5][2]; + + u8 fan_start_output[5]; /* minimum fan speed when spinning up */ + u8 fan_stop_output[5]; /* minimum fan speed when spinning down */ + u8 fan_stop_time[5]; /* time at minimum before disabling fan */ + u8 fan_step_up_time[5]; + u8 fan_step_down_time[5]; + u8 fan_max_output[5]; /* maximum fan speed */ + u8 fan_step_output[5]; /* rate of change output value */ + + /* Automatic fan speed control registers */ + int auto_pwm_num; + u8 auto_pwm[5][7]; + u8 auto_temp[5][7]; + + u8 vid; + u8 vrm; + + u16 have_temp; + u16 have_in; +}; + +struct nct6775_sio_data { + int sioreg; + enum kinds kind; +}; + +/* + * 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(reg); + + mutex_lock(&data->lock); + + 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); + } + + mutex_unlock(&data->lock); + return res; +} + +static int nct6775_write_value(struct nct6775_data *data, u16 reg, + u16 value) +{ + int word_sized = is_word_sized(reg); + + mutex_lock(&data->lock); + + 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); + + mutex_unlock(&data->lock); + 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(reg)) + res <<= 8; + + return res; +} + +static int nct6775_write_temp(struct nct6775_data *data, u16 reg, + u16 value) +{ + if (!is_word_sized(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); + 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 device *dev, + struct nct6775_data *data, int nr) +{ + struct nct6775_sio_data *sio_data = dev->platform_data; + + if (sio_data->kind == nct6775) + nct6775_write_fan_div(data, nr); +} + +static void nct6775_update_fan_div(struct nct6775_data *data) +{ + u8 i; + + i = nct6775_read_value(data, NCT6775_REG_FANDIV1); + data->fan_div[0] = i & 0x7; + data->fan_div[1] = (i & 0x70) >> 4; + i = nct6775_read_value(data, NCT6775_REG_FANDIV2); + data->fan_div[2] = i & 0x7; + if (data->has_fan & (1<<3)) + data->fan_div[3] = (i & 0x70) >> 4; +} + +static void nct6775_update_fan_div_common(struct device *dev, + struct nct6775_data *data) +{ + struct nct6775_sio_data *sio_data = dev->platform_data; + + if (sio_data->kind == nct6775) + nct6775_update_fan_div(data); +} + +static void nct6775_update_pwm(struct device *dev) +{ + struct nct6775_data *data = dev_get_drvdata(dev); + struct nct6775_sio_data *sio_data = dev->platform_data; + int i; + int pwmcfg, fanmodecfg, tol; + + for (i = 0; i < data->pwm_num; i++) { + if (!i) { + pwmcfg = + !(nct6775_read_value(data, + NCT6775_REG_PWM_ENABLE[0]) & 1); + } else { + pwmcfg = 1; + } + data->pwm_mode[i] = pwmcfg; + + fanmodecfg = nct6775_read_value(data, + NCT6775_REG_FAN_MODE[i]); + data->pwm_enable[i] = ((fanmodecfg >> 4) & 7) + 1; + data->tolerance[i][0] = fanmodecfg & 0x0f; + if (sio_data->kind == nct6779) { + tol = nct6775_read_value(data, + NCT6779_REG_TOLERANCE_H[i]); + data->tolerance[i][0] |= (tol & 0x70) >> 1; + } + data->tolerance[i][1] = + nct6775_read_value(data, + NCT6775_REG_CRITICAL_TEMP_TOLERANCE[i]); + data->pwm[i] = nct6775_read_value(data, NCT6775_REG_PWM[i]); + } +} + +static void nct6775_update_pwm_limits(struct device *dev) +{ + struct nct6775_data *data = dev_get_drvdata(dev); + struct nct6775_sio_data *sio_data = dev->platform_data; + int i, j; + u8 reg; + + for (i = 0; i < data->pwm_num; i++) { + if (!(data->has_pwm & (1 << i))) + continue; + + data->fan_start_output[i] = + nct6775_read_value(data, data->REG_FAN_START_OUTPUT[i]); + data->fan_stop_output[i] = + nct6775_read_value(data, data->REG_FAN_STOP_OUTPUT[i]); + data->fan_stop_time[i] = + nct6775_read_value(data, NCT6775_REG_FAN_STOP_TIME[i]); + data->fan_step_up_time[i] = + nct6775_read_value(data, NCT6775_REG_FAN_STEP_UP_TIME[i]); + data->fan_step_down_time[i] = + nct6775_read_value(data, NCT6775_REG_FAN_STEP_DOWN_TIME[i]); + + if (data->REG_FAN_MAX_OUTPUT) + data->fan_max_output[i] = + nct6775_read_value(data, + data->REG_FAN_MAX_OUTPUT[i]); + + if (data->REG_FAN_STEP_OUTPUT) + data->fan_step_output[i] = + nct6775_read_value(data, + data->REG_FAN_STEP_OUTPUT[i]); + + data->target_temp[i] = + nct6775_read_value(data, + data->REG_TARGET[i]) & + (data->pwm_mode[i] == 1 ? 0x7f : 0xff); + for (j = 0; j < data->auto_pwm_num; j++) { + data->auto_pwm[i][j] = + nct6775_read_value(data, NCT6775_REG_AUTO_PWM(i, j)); + data->auto_temp[i][j] = + nct6775_read_value(data, NCT6775_REG_AUTO_TEMP(i, j)); + } + /* handle critical auto_pwm temperature data */ + data->auto_temp[i][data->auto_pwm_num] = + nct6775_read_value(data, NCT6775_REG_CRITICAL_TEMP[i]); + + switch (sio_data->kind) { + case nct6775: + reg = nct6775_read_value(data, + NCT6775_REG_CRITICAL_ENAB[i]); + data->auto_pwm[i][data->auto_pwm_num] = + (reg & 0x02) ? 0xff : 0x00; + break; + case nct6776: + data->auto_pwm[i][data->auto_pwm_num] = 0xff; + break; + case nct6779: + reg = nct6775_read_value(data, + NCT6779_REG_CRITICAL_PWM_ENABLE[i]); + if (reg & 1) + data->auto_pwm[i][data->auto_pwm_num] = + nct6775_read_value(data, + NCT6779_REG_CRITICAL_PWM[i]); + else + data->auto_pwm[i][data->auto_pwm_num] = 0xff; + break; + } + } +} + +static struct nct6775_data *nct6775_update_device(struct device *dev) +{ + struct nct6775_data *data = dev_get_drvdata(dev); + struct nct6775_sio_data *sio_data = dev->platform_data; + + int i; + + 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(dev, data); + + /* Measured voltages and limits */ + for (i = 0; i < data->in_num; i++) { + if (!(data->have_in & (1 << i))) + continue; + + data->in[i] = nct6775_read_value(data, + data->REG_VIN[i]); + data->in_min[i] = nct6775_read_value(data, + NCT6775_REG_IN_MIN(i)); + data->in_max[i] = nct6775_read_value(data, + NCT6775_REG_IN_MAX(i)); + } + + /* Measured fan speeds and limits */ + for (i = 0; i < 5; i++) { + u16 reg; + + if (!(data->has_fan & (1 << i))) + continue; + + reg = nct6775_read_value(data, data->REG_FAN[i]); + data->rpm[i] = data->fan_from_reg(reg, + data->fan_div[i]); + + if (data->has_fan_min & (1 << i)) + data->fan_min[i] = nct6775_read_value(data, + data->REG_FAN_MIN[i]); + + /* + * If we failed to measure the fan speed and clock + * divider can be increased, let's try that for next + * time + */ + if (data->has_fan_div + && (reg >= 0xff || (sio_data->kind == nct6775 + && reg == 0x00)) + && data->fan_div[i] < 0x07) { + dev_dbg(dev, "Increasing fan%d " + "clock divider from %u to %u\n", + i + 1, div_from_reg(data->fan_div[i]), + div_from_reg(data->fan_div[i] + 1)); + data->fan_div[i]++; + nct6775_write_fan_div_common(dev, data, i); + /* Preserve min limit if possible */ + if ((data->has_fan_min & (1 << i)) + && data->fan_min[i] >= 2 + && data->fan_min[i] != 255) + nct6775_write_value(data, + data->REG_FAN_MIN[i], + (data->fan_min[i] /= 2)); + } + } + + nct6775_update_pwm(dev); + nct6775_update_pwm_limits(dev); + + /* Measured temperatures and limits */ + for (i = 0; i < NUM_REG_TEMP; i++) { + if (!(data->have_temp & (1 << i))) + continue; + data->temp[i] = nct6775_read_temp(data, + data->reg_temp[i]); + if (data->reg_temp_over[i]) + data->temp_max[i] + = nct6775_read_temp(data, + data->reg_temp_over[i]); + if (data->reg_temp_hyst[i]) + data->temp_max_hyst[i] + = nct6775_read_temp(data, + data->reg_temp_hyst[i]); + } + + data->alarms = nct6775_read_value(data, + NCT6775_REG_ALARM1) | + (nct6775_read_value(data, + NCT6775_REG_ALARM2) << 8) | + (nct6775_read_value(data, + NCT6775_REG_ALARM3) << 16); + if (sio_data->kind == nct6779) { + data->alarms |= nct6775_read_value(data, + NCT6779_REG_ALARM4) << 24; + } + + data->caseopen = nct6775_read_value(data, + NCT6775_REG_CASEOPEN_DET); + + data->last_updated = jiffies; + data->valid = 1; + } + + mutex_unlock(&data->update_lock); + return data; +} + +/* + * Sysfs callback functions + */ +#define show_in_reg(reg) \ +static ssize_t \ +show_##reg(struct device *dev, struct device_attribute *attr, \ + char *buf) \ +{ \ + struct nct6775_data *data = nct6775_update_device(dev); \ + struct sensor_device_attribute *sensor_attr = \ + to_sensor_dev_attr(attr); \ + int nr = sensor_attr->index; \ + return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr)); \ +} +show_in_reg(in) +show_in_reg(in_min) +show_in_reg(in_max) + +#define store_in_reg(REG, reg) \ +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 *sensor_attr = \ + to_sensor_dev_attr(attr); \ + int nr = sensor_attr->index; \ + unsigned long val; \ + int err = kstrtoul(buf, 10, &val); \ + if (err < 0) \ + return err; \ + mutex_lock(&data->update_lock); \ + data->in_##reg[nr] = in_to_reg(val, nr); \ + nct6775_write_value(data, NCT6775_REG_IN_##REG(nr), \ + data->in_##reg[nr]); \ + mutex_unlock(&data->update_lock); \ + return count; \ +} + +store_in_reg(MIN, min) +store_in_reg(MAX, max) + +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 *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01); +} + +static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0); +static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1); +static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2); +static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3); +static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4); +static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5); +static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6); +static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7); +static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8); +static SENSOR_DEVICE_ATTR(in9_input, S_IRUGO, show_in, NULL, 9); +static SENSOR_DEVICE_ATTR(in10_input, S_IRUGO, show_in, NULL, 10); +static SENSOR_DEVICE_ATTR(in11_input, S_IRUGO, show_in, NULL, 11); +static SENSOR_DEVICE_ATTR(in12_input, S_IRUGO, show_in, NULL, 12); +static SENSOR_DEVICE_ATTR(in13_input, S_IRUGO, show_in, NULL, 13); +static SENSOR_DEVICE_ATTR(in14_input, S_IRUGO, show_in, NULL, 14); + +static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); +static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); +static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); +static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); +static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); +static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21); +static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20); +static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16); +static SENSOR_DEVICE_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17); +static SENSOR_DEVICE_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 24); +static SENSOR_DEVICE_ATTR(in10_alarm, S_IRUGO, show_alarm, NULL, 25); +static SENSOR_DEVICE_ATTR(in11_alarm, S_IRUGO, show_alarm, NULL, 26); +static SENSOR_DEVICE_ATTR(in12_alarm, S_IRUGO, show_alarm, NULL, 27); +static SENSOR_DEVICE_ATTR(in13_alarm, S_IRUGO, show_alarm, NULL, 28); +static SENSOR_DEVICE_ATTR(in14_alarm, S_IRUGO, show_alarm, NULL, 29); + +static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 0); +static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 1); +static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 2); +static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 3); +static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 4); +static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 5); +static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 6); +static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 7); +static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 8); +static SENSOR_DEVICE_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 9); +static SENSOR_DEVICE_ATTR(in10_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 10); +static SENSOR_DEVICE_ATTR(in11_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 11); +static SENSOR_DEVICE_ATTR(in12_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 12); +static SENSOR_DEVICE_ATTR(in13_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 13); +static SENSOR_DEVICE_ATTR(in14_min, S_IWUSR | S_IRUGO, show_in_min, + store_in_min, 14); + +static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 0); +static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 1); +static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 2); +static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 3); +static SENSOR_DEVICE_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 4); +static SENSOR_DEVICE_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 5); +static SENSOR_DEVICE_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 6); +static SENSOR_DEVICE_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 7); +static SENSOR_DEVICE_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 8); +static SENSOR_DEVICE_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 9); +static SENSOR_DEVICE_ATTR(in10_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 10); +static SENSOR_DEVICE_ATTR(in11_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 11); +static SENSOR_DEVICE_ATTR(in12_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 12); +static SENSOR_DEVICE_ATTR(in13_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 13); +static SENSOR_DEVICE_ATTR(in14_max, S_IWUSR | S_IRUGO, show_in_max, + store_in_max, 14); + +static struct attribute *nct6775_attributes_in[15][5] = { + { + &sensor_dev_attr_in0_input.dev_attr.attr, + &sensor_dev_attr_in0_min.dev_attr.attr, + &sensor_dev_attr_in0_max.dev_attr.attr, + &sensor_dev_attr_in0_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in1_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in2_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in3_min.dev_attr.attr, + &sensor_dev_attr_in3_max.dev_attr.attr, + &sensor_dev_attr_in3_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in4_input.dev_attr.attr, + &sensor_dev_attr_in4_min.dev_attr.attr, + &sensor_dev_attr_in4_max.dev_attr.attr, + &sensor_dev_attr_in4_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in5_input.dev_attr.attr, + &sensor_dev_attr_in5_min.dev_attr.attr, + &sensor_dev_attr_in5_max.dev_attr.attr, + &sensor_dev_attr_in5_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in6_input.dev_attr.attr, + &sensor_dev_attr_in6_min.dev_attr.attr, + &sensor_dev_attr_in6_max.dev_attr.attr, + &sensor_dev_attr_in6_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in7_input.dev_attr.attr, + &sensor_dev_attr_in7_min.dev_attr.attr, + &sensor_dev_attr_in7_max.dev_attr.attr, + &sensor_dev_attr_in7_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in8_input.dev_attr.attr, + &sensor_dev_attr_in8_min.dev_attr.attr, + &sensor_dev_attr_in8_max.dev_attr.attr, + &sensor_dev_attr_in8_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in9_input.dev_attr.attr, + &sensor_dev_attr_in9_min.dev_attr.attr, + &sensor_dev_attr_in9_max.dev_attr.attr, + &sensor_dev_attr_in9_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in10_input.dev_attr.attr, + &sensor_dev_attr_in10_min.dev_attr.attr, + &sensor_dev_attr_in10_max.dev_attr.attr, + &sensor_dev_attr_in10_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in11_input.dev_attr.attr, + &sensor_dev_attr_in11_min.dev_attr.attr, + &sensor_dev_attr_in11_max.dev_attr.attr, + &sensor_dev_attr_in11_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in12_input.dev_attr.attr, + &sensor_dev_attr_in12_min.dev_attr.attr, + &sensor_dev_attr_in12_max.dev_attr.attr, + &sensor_dev_attr_in12_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in13_input.dev_attr.attr, + &sensor_dev_attr_in13_min.dev_attr.attr, + &sensor_dev_attr_in13_max.dev_attr.attr, + &sensor_dev_attr_in13_alarm.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_in14_input.dev_attr.attr, + &sensor_dev_attr_in14_min.dev_attr.attr, + &sensor_dev_attr_in14_max.dev_attr.attr, + &sensor_dev_attr_in14_alarm.dev_attr.attr, + NULL + }, +}; + +static const struct attribute_group nct6775_group_in[15] = { + { .attrs = nct6775_attributes_in[0] }, + { .attrs = nct6775_attributes_in[1] }, + { .attrs = nct6775_attributes_in[2] }, + { .attrs = nct6775_attributes_in[3] }, + { .attrs = nct6775_attributes_in[4] }, + { .attrs = nct6775_attributes_in[5] }, + { .attrs = nct6775_attributes_in[6] }, + { .attrs = nct6775_attributes_in[7] }, + { .attrs = nct6775_attributes_in[8] }, + { .attrs = nct6775_attributes_in[9] }, + { .attrs = nct6775_attributes_in[10] }, + { .attrs = nct6775_attributes_in[11] }, + { .attrs = nct6775_attributes_in[12] }, + { .attrs = nct6775_attributes_in[13] }, + { .attrs = nct6775_attributes_in[14] }, +}; + +static ssize_t +show_fan(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct nct6775_data *data = nct6775_update_device(dev); + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->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 *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->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 *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->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 *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + unsigned long val; + int err; + unsigned int reg; + u8 new_div; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + mutex_lock(&data->update_lock); + if (!data->has_fan_div) { + /* + * Only NCT6776F for now, so we know that this is a 13 bit + * register + */ + if (!val) { + val = 0xff1f; + } else { + if (val > 1350000U) + val = 135000U; + val = 1350000U / val; + val = (val & 0x1f) | ((val << 3) & 0xff00); + } + data->fan_min[nr] = val; + goto write_min; /* Leave fan divider alone */ + } + if (!val) { + /* No min limit, alarm disabled */ + data->fan_min[nr] = 255; + new_div = data->fan_div[nr]; /* No change */ + dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1); + goto write_div; + } + reg = 1350000U / val; + if (reg >= 128 * 255) { + /* + * Speed below this value cannot possibly be represented, + * even with the highest divider (128) + */ + data->fan_min[nr] = 254; + new_div = 7; /* 128 == (1 << 7) */ + dev_warn(dev, "fan%u low limit %lu below minimum %u, set to " + "minimum\n", nr + 1, val, + data->fan_from_reg_min(254, 7)); + } else if (!reg) { + /* + * Speed above this value cannot possibly be represented, + * even with the lowest divider (1) + */ + data->fan_min[nr] = 1; + new_div = 0; /* 1 == (1 << 0) */ + dev_warn(dev, "fan%u low limit %lu above maximum %u, set to " + "maximum\n", nr + 1, val, + data->fan_from_reg_min(1, 0)); + } else { + /* + * Automatically pick the best divider, i.e. the one such + * that the min limit will correspond to a register value + * in the 96..192 range + */ + new_div = 0; + while (reg > 192 && new_div < 7) { + reg >>= 1; + new_div++; + } + data->fan_min[nr] = reg; + } + +write_div: + /* + * Write both the fan clock divider (if it changed) and the new + * fan min (unconditionally) + */ + if (new_div != data->fan_div[nr]) { + dev_dbg(dev, "fan%u clock divider changed from %u to %u\n", + nr + 1, div_from_reg(data->fan_div[nr]), + div_from_reg(new_div)); + data->fan_div[nr] = new_div; + nct6775_write_fan_div_common(dev, 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 struct sensor_device_attribute sda_fan_input[] = { + SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), + SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), + SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), + SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3), + SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4), +}; + +static struct sensor_device_attribute sda_fan_alarm[] = { + SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6), + SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7), + SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11), + SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10), + SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23), +}; + +static struct sensor_device_attribute sda_fan_min[] = { + SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min, + store_fan_min, 0), + SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min, + store_fan_min, 1), + SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min, + store_fan_min, 2), + SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min, + store_fan_min, 3), + SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min, + store_fan_min, 4), +}; + +static struct sensor_device_attribute sda_fan_div[] = { + SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0), + SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1), + SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2), + SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3), + SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4), +}; + +static ssize_t +show_temp_label(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct nct6775_data *data = nct6775_update_device(dev); + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + return sprintf(buf, "%s\n", data->temp_label[data->temp_src[nr]]); +} + +#define show_temp_reg(addr, reg) \ +static ssize_t \ +show_##reg(struct device *dev, struct device_attribute *attr, \ + char *buf) \ +{ \ + struct nct6775_data *data = nct6775_update_device(dev); \ + struct sensor_device_attribute *sensor_attr = \ + to_sensor_dev_attr(attr); \ + int nr = sensor_attr->index; \ + return sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(data->reg[nr])); \ +} +show_temp_reg(reg_temp, temp); +show_temp_reg(reg_temp_over, temp_max); +show_temp_reg(reg_temp_hyst, temp_max_hyst); + +#define store_temp_reg(addr, reg) \ +static ssize_t \ +store_##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 *sensor_attr = \ + to_sensor_dev_attr(attr); \ + int nr = sensor_attr->index; \ + int err; \ + long val; \ + err = kstrtol(buf, 10, &val); \ + if (err < 0) \ + return err; \ + mutex_lock(&data->update_lock); \ + data->reg[nr] = LM75_TEMP_TO_REG(val); \ + nct6775_write_temp(data, data->addr[nr], data->reg[nr]); \ + mutex_unlock(&data->update_lock); \ + return count; \ +} +store_temp_reg(reg_temp_over, temp_max); +store_temp_reg(reg_temp_hyst, temp_max_hyst); + +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 *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + return sprintf(buf, "%d\n", (int)data->temp_type[nr]); +} + +static struct sensor_device_attribute sda_temp_input[] = { + SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0), + SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1), + SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2), + SENSOR_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3), + SENSOR_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4), + SENSOR_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5), + SENSOR_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6), + SENSOR_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7), + SENSOR_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8), +}; + +static struct sensor_device_attribute sda_temp_label[] = { + SENSOR_ATTR(temp1_label, S_IRUGO, show_temp_label, NULL, 0), + SENSOR_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1), + SENSOR_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2), + SENSOR_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3), + SENSOR_ATTR(temp5_label, S_IRUGO, show_temp_label, NULL, 4), + SENSOR_ATTR(temp6_label, S_IRUGO, show_temp_label, NULL, 5), + SENSOR_ATTR(temp7_label, S_IRUGO, show_temp_label, NULL, 6), + SENSOR_ATTR(temp8_label, S_IRUGO, show_temp_label, NULL, 7), + SENSOR_ATTR(temp9_label, S_IRUGO, show_temp_label, NULL, 8), +}; + +static struct sensor_device_attribute sda_temp_max[] = { + SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp_max, + store_temp_max, 0), + SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max, + store_temp_max, 1), + SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max, + store_temp_max, 2), + SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR, show_temp_max, + store_temp_max, 3), + SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR, show_temp_max, + store_temp_max, 4), + SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR, show_temp_max, + store_temp_max, 5), + SENSOR_ATTR(temp7_max, S_IRUGO | S_IWUSR, show_temp_max, + store_temp_max, 6), + SENSOR_ATTR(temp8_max, S_IRUGO | S_IWUSR, show_temp_max, + store_temp_max, 7), + SENSOR_ATTR(temp9_max, S_IRUGO | S_IWUSR, show_temp_max, + store_temp_max, 8), +}; + +static struct sensor_device_attribute sda_temp_max_hyst[] = { + SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 0), + SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 1), + SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 2), + SENSOR_ATTR(temp4_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 3), + SENSOR_ATTR(temp5_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 4), + SENSOR_ATTR(temp6_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 5), + SENSOR_ATTR(temp7_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 6), + SENSOR_ATTR(temp8_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 7), + SENSOR_ATTR(temp9_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 8), +}; + +static struct sensor_device_attribute sda_temp_alarm[] = { + SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4), + SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5), + SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13), +}; + +static struct sensor_device_attribute sda_temp_type[] = { + SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0), + SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1), + SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2), +}; + +#define show_pwm_reg(reg) \ +static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ + char *buf) \ +{ \ + struct nct6775_data *data = nct6775_update_device(dev); \ + struct sensor_device_attribute *sensor_attr = \ + to_sensor_dev_attr(attr); \ + int nr = sensor_attr->index; \ + return sprintf(buf, "%d\n", data->reg[nr]); \ +} + +show_pwm_reg(pwm_mode) +show_pwm_reg(pwm_enable) +show_pwm_reg(pwm) + +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 *sensor_attr = to_sensor_dev_attr(attr); + struct nct6775_sio_data *sio_data = dev->platform_data; + int nr = sensor_attr->index; + unsigned long val; + int err; + u8 reg; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + if (val > 1) + return -EINVAL; + + /* On NCT6776F and NCT6779D, DC mode is only supported for pwm1 */ + if ((sio_data->kind == nct6776 || sio_data->kind == nct6779) && nr) { + if (val != 1) + return -EINVAL; + return count; + } + + mutex_lock(&data->update_lock); + reg = nct6775_read_value(data, NCT6775_REG_PWM_ENABLE[nr]); + data->pwm_mode[nr] = val; + reg &= ~(1 << NCT6775_PWM_MODE_SHIFT[nr]); + if (!val) + reg |= 1 << NCT6775_PWM_MODE_SHIFT[nr]; + nct6775_write_value(data, NCT6775_REG_PWM_ENABLE[nr], reg); + mutex_unlock(&data->update_lock); + return count; +} + +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 *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + val = SENSORS_LIMIT(val, 0, 255); + + mutex_lock(&data->update_lock); + data->pwm[nr] = val; + nct6775_write_value(data, NCT6775_REG_PWM[nr], val); + 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 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 nct6775_sio_data *sio_data = dev->platform_data; + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + unsigned long val; + int err; + u16 reg; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + if (!val || val > 5) + return -EINVAL; + + /* SmartFan III mode is only supported on NCT6775F */ + if (sio_data->kind != nct6775 && val == 4) + return -EINVAL; + + if (val == 5 && 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; + reg = nct6775_read_value(data, NCT6775_REG_FAN_MODE[nr]); + reg &= 0x0f; + reg |= (val - 1) << 4; + nct6775_write_value(data, NCT6775_REG_FAN_MODE[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 *sensor_attr = to_sensor_dev_attr(attr); + + return sprintf(buf, "%d\n", + data->target_temp[sensor_attr->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 *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + long val; + int err; + + err = kstrtol(buf, 10, &val); + if (err < 0) + return err; + + val = SENSORS_LIMIT(DIV_ROUND_CLOSEST(val, 1000), 0, 127); + + mutex_lock(&data->update_lock); + data->target_temp[nr] = val; + nct6775_write_value(data, data->REG_TARGET[nr], val); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t show_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); + + return sprintf(buf, "%d\n", + data->tolerance[sattr->nr][sattr->index] * 1000); +} + +static ssize_t +store_tolerance(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct nct6775_data *data = dev_get_drvdata(dev); + struct nct6775_sio_data *sio_data = dev->platform_data; + struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); + int nr = sattr->nr; + int point = sattr->index; + u16 reg; + long val; + int err; + int maxlimit[] = { 15, 7, 63 }; + int mask[] = { 0x0f, 0x07, 0x07 }; + + err = kstrtol(buf, 10, &val); + if (err < 0) + return err; + + /* Limit the temp to 0C - 31C */ + val = SENSORS_LIMIT(DIV_ROUND_CLOSEST(val, 1000), 0, + point ? 7 : maxlimit[sio_data->kind]); + + mutex_lock(&data->update_lock); + if (point == 0) { + reg = nct6775_read_value(data, NCT6775_REG_FAN_MODE[nr]); + reg = (reg & ~mask[nr]) | (val & mask[nr]); + nct6775_write_value(data, NCT6775_REG_FAN_MODE[nr], reg); + if (sio_data->kind == nct6779) { + reg = nct6775_read_value(data, + NCT6779_REG_TOLERANCE_H[nr]); + reg = (reg & 0x70) | ((val & 0x38) << 1); + nct6775_write_value(data, + NCT6779_REG_TOLERANCE_H[nr], reg); + } + } else { + nct6775_write_value(data, + NCT6775_REG_CRITICAL_TEMP_TOLERANCE[nr], + val); + } + + data->tolerance[nr][point] = val; + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0); +static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1); +static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2); +static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3); +static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4); + +static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode, + store_pwm_mode, 0); +static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode, + store_pwm_mode, 1); +static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO, show_pwm_mode, + store_pwm_mode, 2); +static SENSOR_DEVICE_ATTR(pwm4_mode, S_IWUSR | S_IRUGO, show_pwm_mode, + store_pwm_mode, 3); +static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO, show_pwm_mode, + store_pwm_mode, 4); + +static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable, + store_pwm_enable, 0); +static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable, + store_pwm_enable, 1); +static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, show_pwm_enable, + store_pwm_enable, 2); +static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, show_pwm_enable, + store_pwm_enable, 3); +static SENSOR_DEVICE_ATTR(pwm5_enable, S_IWUSR | S_IRUGO, show_pwm_enable, + store_pwm_enable, 4); + +static SENSOR_DEVICE_ATTR(pwm1_target, S_IWUSR | S_IRUGO, show_target_temp, + store_target_temp, 0); +static SENSOR_DEVICE_ATTR(pwm2_target, S_IWUSR | S_IRUGO, show_target_temp, + store_target_temp, 1); +static SENSOR_DEVICE_ATTR(pwm3_target, S_IWUSR | S_IRUGO, show_target_temp, + store_target_temp, 2); +static SENSOR_DEVICE_ATTR(pwm4_target, S_IWUSR | S_IRUGO, show_target_temp, + store_target_temp, 3); +static SENSOR_DEVICE_ATTR(pwm5_target, S_IWUSR | S_IRUGO, show_target_temp, + store_target_temp, 4); + +static SENSOR_DEVICE_ATTR_2(pwm1_tolerance, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 0, 0); +static SENSOR_DEVICE_ATTR_2(pwm2_tolerance, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 1, 0); +static SENSOR_DEVICE_ATTR_2(pwm3_tolerance, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 2, 0); +static SENSOR_DEVICE_ATTR_2(pwm4_tolerance, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 3, 0); +static SENSOR_DEVICE_ATTR_2(pwm5_tolerance, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 4, 0); + +static SENSOR_DEVICE_ATTR_2(pwm1_tolerance1, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 0, 1); +static SENSOR_DEVICE_ATTR_2(pwm2_tolerance1, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 1, 1); +static SENSOR_DEVICE_ATTR_2(pwm3_tolerance1, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 2, 1); +static SENSOR_DEVICE_ATTR_2(pwm4_tolerance1, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 3, 1); +static SENSOR_DEVICE_ATTR_2(pwm5_tolerance1, S_IWUSR | S_IRUGO, show_tolerance, + store_tolerance, 4, 1); + +/* Smart Fan registers */ + +#define fan_functions(reg, REG) \ +static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \ + char *buf) \ +{ \ + struct nct6775_data *data = nct6775_update_device(dev); \ + struct sensor_device_attribute *sensor_attr = \ + to_sensor_dev_attr(attr); \ + int nr = sensor_attr->index; \ + return sprintf(buf, "%d\n", data->reg[nr]); \ +} \ +static ssize_t \ +store_##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 *sensor_attr = \ + to_sensor_dev_attr(attr); \ + int nr = sensor_attr->index; \ + unsigned long val; \ + int err; \ + err = kstrtoul(buf, 10, &val); \ + if (err < 0) \ + return err; \ + val = SENSORS_LIMIT(val, 1, 255); \ + mutex_lock(&data->update_lock); \ + data->reg[nr] = val; \ + nct6775_write_value(data, data->REG_##REG[nr], val); \ + mutex_unlock(&data->update_lock); \ + return count; \ +} + +fan_functions(fan_start_output, FAN_START_OUTPUT) +fan_functions(fan_stop_output, FAN_STOP_OUTPUT) +fan_functions(fan_max_output, FAN_MAX_OUTPUT) +fan_functions(fan_step_output, FAN_STEP_OUTPUT) + +#define fan_step_functions(reg, REG) \ +static ssize_t show_##reg(struct device *dev, \ + struct device_attribute *attr, char *buf) \ +{ \ + struct nct6775_data *data = nct6775_update_device(dev); \ + struct sensor_device_attribute *sensor_attr = \ + to_sensor_dev_attr(attr); \ + int nr = sensor_attr->index; \ + return sprintf(buf, "%d\n", \ + step_time_from_reg(data->reg[nr], \ + data->pwm_mode[nr])); \ +} \ +static ssize_t store_##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 *sensor_attr = \ + to_sensor_dev_attr(attr); \ + int nr = sensor_attr->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->reg[nr] = val; \ + nct6775_write_value(data, NCT6775_REG_##REG[nr], val); \ + mutex_unlock(&data->update_lock); \ + return count; \ +} + +fan_step_functions(fan_stop_time, FAN_STOP_TIME) +fan_step_functions(fan_step_up_time, FAN_STEP_UP_TIME) +fan_step_functions(fan_step_down_time, FAN_STEP_DOWN_TIME) + +static ssize_t show_name(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct nct6775_data *data = dev_get_drvdata(dev); + + return sprintf(buf, "%s\n", data->name); +} +static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); + +static SENSOR_DEVICE_ATTR(pwm1_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time, + store_fan_stop_time, 0); +static SENSOR_DEVICE_ATTR(pwm2_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time, + store_fan_stop_time, 1); +static SENSOR_DEVICE_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time, + store_fan_stop_time, 2); +static SENSOR_DEVICE_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time, + store_fan_stop_time, 3); +static SENSOR_DEVICE_ATTR(pwm5_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time, + store_fan_stop_time, 4); + +static SENSOR_DEVICE_ATTR(pwm1_step_up_time, S_IWUSR | S_IRUGO, + show_fan_step_up_time, store_fan_step_up_time, 0); +static SENSOR_DEVICE_ATTR(pwm2_step_up_time, S_IWUSR | S_IRUGO, + show_fan_step_up_time, store_fan_step_up_time, 1); +static SENSOR_DEVICE_ATTR(pwm3_step_up_time, S_IWUSR | S_IRUGO, + show_fan_step_up_time, store_fan_step_up_time, 2); +static SENSOR_DEVICE_ATTR(pwm4_step_up_time, S_IWUSR | S_IRUGO, + show_fan_step_up_time, store_fan_step_up_time, 3); +static SENSOR_DEVICE_ATTR(pwm5_step_up_time, S_IWUSR | S_IRUGO, + show_fan_step_up_time, store_fan_step_up_time, 4); + +static SENSOR_DEVICE_ATTR(pwm1_step_down_time, S_IWUSR | S_IRUGO, + show_fan_step_down_time, store_fan_step_down_time, 0); +static SENSOR_DEVICE_ATTR(pwm2_step_down_time, S_IWUSR | S_IRUGO, + show_fan_step_down_time, store_fan_step_down_time, 1); +static SENSOR_DEVICE_ATTR(pwm3_step_down_time, S_IWUSR | S_IRUGO, + show_fan_step_down_time, store_fan_step_down_time, 2); +static SENSOR_DEVICE_ATTR(pwm4_step_down_time, S_IWUSR | S_IRUGO, + show_fan_step_down_time, store_fan_step_down_time, 3); +static SENSOR_DEVICE_ATTR(pwm5_step_down_time, S_IWUSR | S_IRUGO, + show_fan_step_down_time, store_fan_step_down_time, 4); + +static SENSOR_DEVICE_ATTR(pwm1_start_output, S_IWUSR | S_IRUGO, + show_fan_start_output, store_fan_start_output, 0); +static SENSOR_DEVICE_ATTR(pwm2_start_output, S_IWUSR | S_IRUGO, + show_fan_start_output, store_fan_start_output, 1); +static SENSOR_DEVICE_ATTR(pwm3_start_output, S_IWUSR | S_IRUGO, + show_fan_start_output, store_fan_start_output, 2); +static SENSOR_DEVICE_ATTR(pwm4_start_output, S_IWUSR | S_IRUGO, + show_fan_start_output, store_fan_start_output, 3); +static SENSOR_DEVICE_ATTR(pwm5_start_output, S_IWUSR | S_IRUGO, + show_fan_start_output, store_fan_start_output, 4); + +static SENSOR_DEVICE_ATTR(pwm1_stop_output, S_IWUSR | S_IRUGO, + show_fan_stop_output, store_fan_stop_output, 0); +static SENSOR_DEVICE_ATTR(pwm2_stop_output, S_IWUSR | S_IRUGO, + show_fan_stop_output, store_fan_stop_output, 1); +static SENSOR_DEVICE_ATTR(pwm3_stop_output, S_IWUSR | S_IRUGO, + show_fan_stop_output, store_fan_stop_output, 2); +static SENSOR_DEVICE_ATTR(pwm4_stop_output, S_IWUSR | S_IRUGO, + show_fan_stop_output, store_fan_stop_output, 3); +static SENSOR_DEVICE_ATTR(pwm5_stop_output, S_IWUSR | S_IRUGO, + show_fan_stop_output, store_fan_stop_output, 4); + +static struct attribute *nct6775_attributes_pwm[5][12] = { + { + &sensor_dev_attr_pwm1.dev_attr.attr, + &sensor_dev_attr_pwm1_mode.dev_attr.attr, + &sensor_dev_attr_pwm1_enable.dev_attr.attr, + &sensor_dev_attr_pwm1_target.dev_attr.attr, + &sensor_dev_attr_pwm1_tolerance.dev_attr.attr, + &sensor_dev_attr_pwm1_tolerance1.dev_attr.attr, + &sensor_dev_attr_pwm1_stop_time.dev_attr.attr, + &sensor_dev_attr_pwm1_step_up_time.dev_attr.attr, + &sensor_dev_attr_pwm1_step_down_time.dev_attr.attr, + &sensor_dev_attr_pwm1_start_output.dev_attr.attr, + &sensor_dev_attr_pwm1_stop_output.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_pwm2.dev_attr.attr, + &sensor_dev_attr_pwm2_mode.dev_attr.attr, + &sensor_dev_attr_pwm2_enable.dev_attr.attr, + &sensor_dev_attr_pwm2_target.dev_attr.attr, + &sensor_dev_attr_pwm2_tolerance.dev_attr.attr, + &sensor_dev_attr_pwm2_tolerance1.dev_attr.attr, + &sensor_dev_attr_pwm2_stop_time.dev_attr.attr, + &sensor_dev_attr_pwm2_step_up_time.dev_attr.attr, + &sensor_dev_attr_pwm2_step_down_time.dev_attr.attr, + &sensor_dev_attr_pwm2_start_output.dev_attr.attr, + &sensor_dev_attr_pwm2_stop_output.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_pwm3.dev_attr.attr, + &sensor_dev_attr_pwm3_mode.dev_attr.attr, + &sensor_dev_attr_pwm3_enable.dev_attr.attr, + &sensor_dev_attr_pwm3_target.dev_attr.attr, + &sensor_dev_attr_pwm3_tolerance.dev_attr.attr, + &sensor_dev_attr_pwm3_tolerance1.dev_attr.attr, + &sensor_dev_attr_pwm3_stop_time.dev_attr.attr, + &sensor_dev_attr_pwm3_step_up_time.dev_attr.attr, + &sensor_dev_attr_pwm3_step_down_time.dev_attr.attr, + &sensor_dev_attr_pwm3_start_output.dev_attr.attr, + &sensor_dev_attr_pwm3_stop_output.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_pwm4.dev_attr.attr, + &sensor_dev_attr_pwm4_mode.dev_attr.attr, + &sensor_dev_attr_pwm4_enable.dev_attr.attr, + &sensor_dev_attr_pwm4_target.dev_attr.attr, + &sensor_dev_attr_pwm4_tolerance.dev_attr.attr, + &sensor_dev_attr_pwm4_tolerance1.dev_attr.attr, + &sensor_dev_attr_pwm4_stop_time.dev_attr.attr, + &sensor_dev_attr_pwm4_step_up_time.dev_attr.attr, + &sensor_dev_attr_pwm4_step_down_time.dev_attr.attr, + &sensor_dev_attr_pwm4_start_output.dev_attr.attr, + &sensor_dev_attr_pwm4_stop_output.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_pwm5.dev_attr.attr, + &sensor_dev_attr_pwm5_mode.dev_attr.attr, + &sensor_dev_attr_pwm5_enable.dev_attr.attr, + &sensor_dev_attr_pwm5_target.dev_attr.attr, + &sensor_dev_attr_pwm5_tolerance.dev_attr.attr, + &sensor_dev_attr_pwm5_tolerance1.dev_attr.attr, + &sensor_dev_attr_pwm5_stop_time.dev_attr.attr, + &sensor_dev_attr_pwm5_step_up_time.dev_attr.attr, + &sensor_dev_attr_pwm5_step_down_time.dev_attr.attr, + &sensor_dev_attr_pwm5_start_output.dev_attr.attr, + &sensor_dev_attr_pwm5_stop_output.dev_attr.attr, + NULL + }, +}; + +static const struct attribute_group nct6775_group_pwm[5] = { + { .attrs = nct6775_attributes_pwm[0] }, + { .attrs = nct6775_attributes_pwm[1] }, + { .attrs = nct6775_attributes_pwm[2] }, + { .attrs = nct6775_attributes_pwm[3] }, + { .attrs = nct6775_attributes_pwm[4] }, +}; + +/* + * max and step settings are not supported on all chips. + * Need to check support while generating/removing attribute files. + */ +static struct sensor_device_attribute sda_sf3_max_step_arrays[] = { + SENSOR_ATTR(pwm1_max_output, S_IWUSR | S_IRUGO, show_fan_max_output, + store_fan_max_output, 0), + SENSOR_ATTR(pwm1_step_output, S_IWUSR | S_IRUGO, show_fan_step_output, + store_fan_step_output, 0), + SENSOR_ATTR(pwm2_max_output, S_IWUSR | S_IRUGO, show_fan_max_output, + store_fan_max_output, 1), + SENSOR_ATTR(pwm2_step_output, S_IWUSR | S_IRUGO, show_fan_step_output, + store_fan_step_output, 1), + SENSOR_ATTR(pwm3_max_output, S_IWUSR | S_IRUGO, show_fan_max_output, + store_fan_max_output, 2), + SENSOR_ATTR(pwm3_step_output, S_IWUSR | S_IRUGO, show_fan_step_output, + store_fan_step_output, 2), + SENSOR_ATTR(pwm4_max_output, S_IWUSR | S_IRUGO, show_fan_max_output, + store_fan_max_output, 3), + SENSOR_ATTR(pwm4_step_output, S_IWUSR | S_IRUGO, show_fan_step_output, + store_fan_step_output, 3), + SENSOR_ATTR(pwm5_max_output, S_IWUSR | S_IRUGO, show_fan_max_output, + store_fan_max_output, 4), + SENSOR_ATTR(pwm5_step_output, S_IWUSR | S_IRUGO, show_fan_step_output, + store_fan_step_output, 4), +}; + +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_sio_data *sio_data = dev->platform_data; + 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 (sio_data->kind != nct6775 && !val) + return -EINVAL; + if (sio_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_REG_AUTO_PWM(nr, point), + data->auto_pwm[nr][point]); + } else { + switch(sio_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 nct6779: + nct6775_write_value(data, NCT6779_REG_CRITICAL_PWM[nr], + val); + reg = nct6775_read_value(data, + NCT6779_REG_CRITICAL_PWM_ENABLE[nr]); + if (val == 255) + reg &= ~0x01; + else + reg |= 0x01; + nct6775_write_value(data, + NCT6779_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_REG_AUTO_TEMP(nr, point), + data->auto_temp[nr][point]); + } else { + nct6775_write_value(data, NCT6775_REG_CRITICAL_TEMP[nr], + data->auto_temp[nr][point]); + } + mutex_unlock(&data->update_lock); + return count; +} + +/* + * The number of auto-point trip points is chip dependent. + * Need to check support while generating/removing attribute files. + */ +static struct sensor_device_attribute_2 sda_auto_pwm_arrays[] = { + SENSOR_ATTR_2(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 0, 0), + SENSOR_ATTR_2(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 0, 0), + SENSOR_ATTR_2(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 0, 1), + SENSOR_ATTR_2(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 0, 1), + SENSOR_ATTR_2(pwm1_auto_point3_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 0, 2), + SENSOR_ATTR_2(pwm1_auto_point3_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 0, 2), + SENSOR_ATTR_2(pwm1_auto_point4_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 0, 3), + SENSOR_ATTR_2(pwm1_auto_point4_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 0, 3), + SENSOR_ATTR_2(pwm1_auto_point5_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 0, 4), + SENSOR_ATTR_2(pwm1_auto_point5_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 0, 4), + SENSOR_ATTR_2(pwm1_auto_point6_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 0, 5), + SENSOR_ATTR_2(pwm1_auto_point6_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 0, 5), + SENSOR_ATTR_2(pwm1_auto_point7_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 0, 6), + SENSOR_ATTR_2(pwm1_auto_point7_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 0, 6), + + SENSOR_ATTR_2(pwm2_auto_point1_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 1, 0), + SENSOR_ATTR_2(pwm2_auto_point1_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 1, 0), + SENSOR_ATTR_2(pwm2_auto_point2_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 1, 1), + SENSOR_ATTR_2(pwm2_auto_point2_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 1, 1), + SENSOR_ATTR_2(pwm2_auto_point3_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 1, 2), + SENSOR_ATTR_2(pwm2_auto_point3_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 1, 2), + SENSOR_ATTR_2(pwm2_auto_point4_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 1, 3), + SENSOR_ATTR_2(pwm2_auto_point4_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 1, 3), + SENSOR_ATTR_2(pwm2_auto_point5_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 1, 4), + SENSOR_ATTR_2(pwm2_auto_point5_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 1, 4), + SENSOR_ATTR_2(pwm2_auto_point6_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 1, 5), + SENSOR_ATTR_2(pwm2_auto_point6_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 1, 5), + SENSOR_ATTR_2(pwm2_auto_point7_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 1, 6), + SENSOR_ATTR_2(pwm2_auto_point7_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 1, 6), + + SENSOR_ATTR_2(pwm3_auto_point1_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 2, 0), + SENSOR_ATTR_2(pwm3_auto_point1_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 2, 0), + SENSOR_ATTR_2(pwm3_auto_point2_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 2, 1), + SENSOR_ATTR_2(pwm3_auto_point2_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 2, 1), + SENSOR_ATTR_2(pwm3_auto_point3_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 2, 2), + SENSOR_ATTR_2(pwm3_auto_point3_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 2, 2), + SENSOR_ATTR_2(pwm3_auto_point4_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 2, 3), + SENSOR_ATTR_2(pwm3_auto_point4_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 2, 3), + SENSOR_ATTR_2(pwm3_auto_point5_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 2, 4), + SENSOR_ATTR_2(pwm3_auto_point5_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 2, 4), + SENSOR_ATTR_2(pwm3_auto_point6_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 2, 5), + SENSOR_ATTR_2(pwm3_auto_point6_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 2, 5), + SENSOR_ATTR_2(pwm3_auto_point7_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 2, 6), + SENSOR_ATTR_2(pwm3_auto_point7_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 2, 6), + + SENSOR_ATTR_2(pwm4_auto_point1_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 3, 0), + SENSOR_ATTR_2(pwm4_auto_point1_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 3, 0), + SENSOR_ATTR_2(pwm4_auto_point2_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 3, 1), + SENSOR_ATTR_2(pwm4_auto_point2_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 3, 1), + SENSOR_ATTR_2(pwm4_auto_point3_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 3, 2), + SENSOR_ATTR_2(pwm4_auto_point3_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 3, 2), + SENSOR_ATTR_2(pwm4_auto_point4_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 3, 3), + SENSOR_ATTR_2(pwm4_auto_point4_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 3, 3), + SENSOR_ATTR_2(pwm4_auto_point5_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 3, 4), + SENSOR_ATTR_2(pwm4_auto_point5_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 3, 4), + SENSOR_ATTR_2(pwm4_auto_point6_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 3, 5), + SENSOR_ATTR_2(pwm4_auto_point6_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 3, 5), + SENSOR_ATTR_2(pwm4_auto_point7_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 3, 6), + SENSOR_ATTR_2(pwm4_auto_point7_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 3, 6), + + SENSOR_ATTR_2(pwm5_auto_point1_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 4, 0), + SENSOR_ATTR_2(pwm5_auto_point1_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 4, 0), + SENSOR_ATTR_2(pwm5_auto_point2_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 4, 1), + SENSOR_ATTR_2(pwm5_auto_point2_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 4, 1), + SENSOR_ATTR_2(pwm5_auto_point3_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 4, 2), + SENSOR_ATTR_2(pwm5_auto_point3_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 4, 2), + SENSOR_ATTR_2(pwm5_auto_point4_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 4, 3), + SENSOR_ATTR_2(pwm5_auto_point4_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 4, 3), + SENSOR_ATTR_2(pwm5_auto_point5_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 4, 4), + SENSOR_ATTR_2(pwm5_auto_point5_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 4, 4), + SENSOR_ATTR_2(pwm5_auto_point6_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 4, 5), + SENSOR_ATTR_2(pwm5_auto_point6_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 4, 5), + SENSOR_ATTR_2(pwm5_auto_point7_pwm, S_IWUSR | S_IRUGO, + show_auto_pwm, store_auto_pwm, 4, 6), + SENSOR_ATTR_2(pwm5_auto_point7_temp, S_IWUSR | S_IRUGO, + show_auto_temp, store_auto_temp, 4, 6), +}; + +static ssize_t +show_vid(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(cpu0_vid, S_IRUGO, show_vid, NULL); + + +/* Case open detection */ + +static ssize_t +show_caseopen(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct nct6775_data *data = nct6775_update_device(dev); + + return sprintf(buf, "%d\n", + !!(data->caseopen & to_sensor_dev_attr_2(attr)->index)); +} + +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); + unsigned long val; + u16 reg, mask; + + if (kstrtoul(buf, 10, &val) || val != 0) + return -EINVAL; + + mask = to_sensor_dev_attr_2(attr)->nr; + + mutex_lock(&data->update_lock); + reg = nct6775_read_value(data, NCT6775_REG_CASEOPEN_CLR); + nct6775_write_value(data, NCT6775_REG_CASEOPEN_CLR, reg | mask); + nct6775_write_value(data, NCT6775_REG_CASEOPEN_CLR, reg & ~mask); + data->valid = 0; /* Force cache refresh */ + mutex_unlock(&data->update_lock); + + return count; +} + +static struct sensor_device_attribute_2 sda_caseopen[] = { + SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_caseopen, + clear_caseopen, 0x80, 0x10), + SENSOR_ATTR_2(intrusion1_alarm, S_IWUSR | S_IRUGO, show_caseopen, + clear_caseopen, 0x40, 0x40), +}; + +/* + * Driver and device management + */ + +static void nct6775_device_remove_files(struct device *dev) +{ + /* + * some entries in the following arrays may not have been used in + * device_create_file(), but device_remove_file() will ignore them + */ + int i, j; + struct nct6775_data *data = dev_get_drvdata(dev); + + for (i = 0; i < data->pwm_num; i++) { + sysfs_remove_group(&dev->kobj, &nct6775_group_pwm[i]); + for (j = 0; j < ARRAY_SIZE(sda_auto_pwm_arrays); j++) + device_remove_file(dev, + &sda_auto_pwm_arrays[j].dev_attr); + } + + for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) + device_remove_file(dev, &sda_sf3_max_step_arrays[i].dev_attr); + + for (i = 0; i < data->in_num; i++) + sysfs_remove_group(&dev->kobj, &nct6775_group_in[i]); + + for (i = 0; i < 5; i++) { + device_remove_file(dev, &sda_fan_input[i].dev_attr); + device_remove_file(dev, &sda_fan_alarm[i].dev_attr); + device_remove_file(dev, &sda_fan_div[i].dev_attr); + device_remove_file(dev, &sda_fan_min[i].dev_attr); + } + for (i = 0; i < NUM_REG_TEMP; i++) { + if (!(data->have_temp & (1 << i))) + continue; + device_remove_file(dev, &sda_temp_input[i].dev_attr); + device_remove_file(dev, &sda_temp_label[i].dev_attr); + device_remove_file(dev, &sda_temp_max[i].dev_attr); + device_remove_file(dev, &sda_temp_max_hyst[i].dev_attr); + if (i > 2) + continue; + device_remove_file(dev, &sda_temp_alarm[i].dev_attr); + device_remove_file(dev, &sda_temp_type[i].dev_attr); + } + + device_remove_file(dev, &sda_caseopen[0].dev_attr); + device_remove_file(dev, &sda_caseopen[1].dev_attr); + + device_remove_file(dev, &dev_attr_name); + device_remove_file(dev, &dev_attr_cpu0_vid); +} + +/* Get the monitoring functions started */ +static inline void __devinit nct6775_init_device(struct nct6775_data *data, + enum kinds kind) +{ + int i; + u8 tmp; + + /* Start monitoring if needed */ + tmp = nct6775_read_value(data, NCT6775_REG_CONFIG); + if (!(tmp & 0x01)) + nct6775_write_value(data, NCT6775_REG_CONFIG, + tmp | 0x01); + + /* Enable temperature sensors if needed */ + for (i = 0; i < NUM_REG_TEMP; i++) { + if (!(data->have_temp & (1 << 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, NCT6775_REG_VBAT); + if (!(tmp & 0x01)) + nct6775_write_value(data, NCT6775_REG_VBAT, tmp | 0x01); + + for (i = 0; i < 3; i++) { + const char *label = NULL; + + if (data->temp_label) + label = data->temp_label[data->temp_src[i]]; + + /* Digital source overrides analog type */ + if (label && strncmp(label, "PECI", 4) == 0) + data->temp_type[i] = 6; + else if (label && strncmp(label, "AMD", 3) == 0) + data->temp_type[i] = 5; + else if ((tmp & (0x02 << i))) + data->temp_type[i] = 1; /* diode */ + else + data->temp_type[i] = 4; /* thermistor */ + } +} + +static void w82627ehf_swap_tempreg(struct nct6775_data *data, + int r1, int r2) +{ + u16 tmp; + + tmp = data->temp_src[r1]; + data->temp_src[r1] = data->temp_src[r2]; + data->temp_src[r2] = tmp; + + tmp = data->reg_temp[r1]; + data->reg_temp[r1] = data->reg_temp[r2]; + data->reg_temp[r2] = tmp; + + tmp = data->reg_temp_over[r1]; + data->reg_temp_over[r1] = data->reg_temp_over[r2]; + data->reg_temp_over[r2] = tmp; + + tmp = data->reg_temp_hyst[r1]; + data->reg_temp_hyst[r1] = data->reg_temp_hyst[r2]; + data->reg_temp_hyst[r2] = tmp; + + tmp = data->reg_temp_config[r1]; + data->reg_temp_config[r1] = data->reg_temp_config[r2]; + data->reg_temp_config[r2] = tmp; +} + +static void __devinit +nct6775_check_fan_inputs(const struct nct6775_sio_data *sio_data, + struct nct6775_data *data) +{ + int regval; + bool fan3pin, fan3min, fan4pin, fan4min, fan5pin; + bool pwm3pin, pwm4pin, pwm5pin; + + superio_enter(sio_data->sioreg); + + /* fan4 and fan5 share some pins with the GPIO and serial flash */ + if (sio_data->kind == nct6775) { + regval = superio_inb(sio_data->sioreg, 0x2c); + + fan3pin = regval & (1 << 6); + fan3min = fan3pin; + pwm3pin = regval & (1 << 7); + + /* On NCT6775, fan4 shares pins with the fdc interface */ + fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80); + fan4min = 0; + fan5pin = 0; + pwm4pin = 0; + pwm5pin = 0; + } else if (sio_data->kind == nct6776) { + bool gpok = superio_inb(sio_data->sioreg, 0x27) & 0x80; + + superio_select(sio_data->sioreg, NCT6775_LD_HWM); + regval = superio_inb(sio_data->sioreg, SIO_REG_ENABLE); + + if (regval & 0x80) + fan3pin = gpok; + else + fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40); + + if (regval & 0x40) + fan4pin = gpok; + else + fan4pin = superio_inb(sio_data->sioreg, 0x1C) & 0x01; + + if (regval & 0x20) + fan5pin = gpok; + else + fan5pin = superio_inb(sio_data->sioreg, 0x1C) & 0x02; + + fan4min = fan4pin; + fan3min = fan3pin; + pwm3pin = fan3pin; + pwm4pin = 0; + pwm5pin = 0; + } else { /* NCT6779D */ + regval = superio_inb(sio_data->sioreg, 0x1c); + + fan3pin = !(regval & (1 << 5)); + fan4pin = !(regval & (1 << 6)); + fan5pin = !(regval & (1 << 7)); + + pwm3pin = !(regval & (1 << 0)); + pwm4pin = !(regval & (1 << 1)); + pwm5pin = !(regval & (1 << 2)); + + fan3min = 0; + fan4min = 0; + } + + superio_exit(sio_data->sioreg); + + data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */ + data->has_fan |= (fan3pin << 2); + data->has_fan_min |= (fan3min << 2); + + data->has_fan |= (fan4pin << 3) | (fan5pin << 4); + data->has_fan_min |= (fan4min << 3) | (fan5pin << 4); + + data->has_pwm = 0x03 | (pwm3pin << 2) | (pwm4pin << 3) | (pwm5pin << 4); +} + +static int __devinit nct6775_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct nct6775_sio_data *sio_data = dev->platform_data; + struct nct6775_data *data; + struct resource *res; + int i, err = 0; + + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (!request_region(res->start, IOREGION_LENGTH, DRVNAME)) { + err = -EBUSY; + dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", + (unsigned long)res->start, + (unsigned long)res->start + IOREGION_LENGTH - 1); + goto exit; + } + + data = devm_kzalloc(&pdev->dev, sizeof(struct nct6775_data), + GFP_KERNEL); + if (!data) { + err = -ENOMEM; + goto exit_release; + } + + data->addr = res->start; + mutex_init(&data->lock); + mutex_init(&data->update_lock); + data->name = nct6775_device_names[sio_data->kind]; + platform_set_drvdata(pdev, data); + + switch (sio_data->kind) { + default: + data->in_num = 9; + data->have_in = 0x1ff; + break; + case nct6779: + data->in_num = 15; + data->have_in = 0x7fff; + break; + } + + switch (sio_data->kind) { + case nct6775: + data->pwm_num = 3; + data->auto_pwm_num = 6; + break; + case nct6776: + data->pwm_num = 3; + data->auto_pwm_num = 4; + break; + case nct6779: + data->pwm_num = 5; + data->auto_pwm_num = 4; + break; + } + + /* Default to no temperature inputs, code below will adjust as needed */ + data->have_temp = 0; + + /* Deal with temperature register setup first. */ + if (sio_data->kind == nct6775 || sio_data->kind == nct6776) { + int mask = 0; + + /* + * Display temperature sensor output only if it monitors + * a source other than one already reported. Always display + * first three temperature registers, though. + */ + for (i = 0; i < NUM_REG_TEMP; i++) { + u8 src; + + data->reg_temp[i] = NCT6775_REG_TEMP[i]; + data->reg_temp_over[i] = NCT6775_REG_TEMP_OVER[i]; + data->reg_temp_hyst[i] = NCT6775_REG_TEMP_HYST[i]; + if (sio_data->kind == nct6775) + data->reg_temp_config[i] + = NCT6775_REG_TEMP_CONFIG[i]; + else + data->reg_temp_config[i] + = NCT6776_REG_TEMP_CONFIG[i]; + + src = nct6775_read_value(data, + NCT6775_REG_TEMP_SOURCE[i]); + src &= 0x1f; + if (src && !(mask & (1 << src))) { + data->have_temp |= 1 << i; + mask |= 1 << src; + } + + data->temp_src[i] = src; + + /* + * Now do some register swapping if index 0..2 don't + * point to SYSTIN(1), CPUIN(2), and AUXIN(3). + * Idea is to have the first three attributes + * report SYSTIN, CPUIN, and AUXIN if possible + * without overriding the basic system configuration. + */ + if (i > 0 && data->temp_src[0] != 1 + && data->temp_src[i] == 1) + w82627ehf_swap_tempreg(data, 0, i); + if (i > 1 && data->temp_src[1] != 2 + && data->temp_src[i] == 2) + w82627ehf_swap_tempreg(data, 1, i); + if (i > 2 && data->temp_src[2] != 3 + && data->temp_src[i] == 3) + w82627ehf_swap_tempreg(data, 2, i); + } + if (sio_data->kind == nct6776) { + /* + * On NCT6776, AUXTIN and VIN3 pins are shared. + * Only way to detect it is to check if AUXTIN is used + * as a temperature source, and if that source is + * enabled. + * + * If that is the case, disable in6, which reports VIN3. + * Otherwise disable temp3. + */ + if (data->temp_src[2] == 3) { + u8 reg; + + if (data->reg_temp_config[2]) + reg = nct6775_read_value(data, + data->reg_temp_config[2]); + else + reg = 0; /* Assume AUXTIN is used */ + + if (reg & 0x01) + data->have_temp &= ~(1 << 2); + else + data->have_in &= ~(1 << 6); + } + data->temp_label = nct6776_temp_label; + } else { + data->temp_label = nct6775_temp_label; + } + } else if (sio_data->kind == nct6779) { + int mask = 0; + + /* + * Display temperature sensor output only if it monitors + * a source other than one already reported. Always display + * first three temperature registers, though. + */ + for (i = 0; i < ARRAY_SIZE(NCT6779_REG_TEMP); i++) { + u8 src; + + data->reg_temp[i] = NCT6779_REG_TEMP[i]; + data->reg_temp_over[i] = NCT6779_REG_TEMP_OVER[i]; + data->reg_temp_hyst[i] = NCT6779_REG_TEMP_HYST[i]; + data->reg_temp_config[i] = NCT6779_REG_TEMP_CONFIG[i]; + + src = nct6775_read_value(data, + NCT6779_REG_TEMP_SOURCE[i]); + src &= 0x1f; + if (src && !(mask & (1 << src))) { + data->have_temp |= 1 << i; + mask |= 1 << src; + } + + data->temp_src[i] = src; + + /* + * Now do some register swapping if index 0..2 don't + * point to SYSTIN(1), CPUIN(2), and AUXIN(3). + * Idea is to have the first three attributes + * report SYSTIN, CPUIN, and AUXIN if possible + * without overriding the basic system configuration. + */ + if (i > 0 && data->temp_src[0] != 1 + && data->temp_src[i] == 1) + w82627ehf_swap_tempreg(data, 0, i); + if (i > 1 && data->temp_src[1] != 2 + && data->temp_src[i] == 2) + w82627ehf_swap_tempreg(data, 1, i); + if (i > 2 && data->temp_src[2] != 3 + && data->temp_src[i] == 3) + w82627ehf_swap_tempreg(data, 2, i); + } + data->temp_label = nct6779_temp_label; + + /* + * Shared pins: + * VIN4 / AUXTIN0 + * VIN5 / AUXTIN1 + * VIN6 / AUXTIN2 + * VIN7 / AUXTIN3 + * Assume voltage is disabled if the respective temperature is + * used as temperature source. + */ + for (i = 0; i < ARRAY_SIZE(NCT6779_REG_TEMP); i++) { + if (!(data->have_temp & (1 << i))) + continue; + if (data->temp_src[i] == 3) /* AUXTIN0 */ + data->have_in &= ~(1 << 6); /* no VIN4 */ + if (data->temp_src[i] == 4) /* AUXTIN1 */ + data->have_in &= ~(1 << 10); /* no VIN5 */ + if (data->temp_src[i] == 5) /* AUXTIN2 */ + data->have_in &= ~(1 << 11); /* no VIN6 */ + if (data->temp_src[i] == 6) /* AUXTIN0 */ + data->have_in &= ~(1 << 14); /* no VIN7 */ + } + } + + if (sio_data->kind == nct6775) { + data->has_fan_div = true; + data->fan_from_reg = fan_from_reg16; + data->fan_from_reg_min = fan_from_reg8; + data->REG_VIN = NCT6775_REG_IN; + data->REG_TARGET = NCT6775_REG_TARGET; + data->REG_FAN = NCT6775_REG_FAN; + data->REG_FAN_MIN = NCT6775_REG_FAN_MIN; + data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT; + data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT; + data->REG_FAN_MAX_OUTPUT = NCT6775_REG_FAN_MAX_OUTPUT; + data->REG_FAN_STEP_OUTPUT = NCT6775_REG_FAN_STEP_OUTPUT; + } else if (sio_data->kind == nct6776) { + data->has_fan_div = false; + data->fan_from_reg = fan_from_reg13; + data->fan_from_reg_min = fan_from_reg13; + data->REG_VIN = NCT6775_REG_IN; + data->REG_TARGET = NCT6775_REG_TARGET; + data->REG_FAN = NCT6775_REG_FAN; + data->REG_FAN_MIN = NCT6776_REG_FAN_MIN; + data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT; + data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT; + } else if (sio_data->kind == nct6779) { + data->has_fan_div = false; + data->fan_from_reg = fan_from_reg13; + data->fan_from_reg_min = fan_from_reg13; + data->REG_VIN = NCT6779_REG_IN; + data->REG_TARGET = NCT6775_REG_TARGET; + data->REG_FAN = NCT6779_REG_FAN; + data->REG_FAN_MIN = NCT6776_REG_FAN_MIN; + data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT; + data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT; + } + + /* Initialize the chip */ + nct6775_init_device(data, sio_data->kind); + + data->vrm = vid_which_vrm(); + superio_enter(sio_data->sioreg); + /* + * Read VID value + * We can get the VID input values directly at logical device D 0xe3. + */ + superio_select(sio_data->sioreg, NCT6775_LD_VID); + data->vid = superio_inb(sio_data->sioreg, 0xe3); + err = device_create_file(dev, &dev_attr_cpu0_vid); + if (err) + goto exit_release; + + if (fan_debounce) { + u8 tmp; + + superio_select(sio_data->sioreg, NCT6775_LD_HWM); + tmp = superio_inb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE); + if (sio_data->kind == nct6776 || sio_data->kind == nct6779) + superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE, + 0x3e | tmp); + else + superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE, + 0x1e | tmp); + pr_info("Enabled fan debounce for chip %s\n", data->name); + } + + superio_exit(sio_data->sioreg); + + nct6775_check_fan_inputs(sio_data, data); + + /* Read fan clock dividers immediately */ + nct6775_update_fan_div_common(dev, data); + + /* Register sysfs hooks */ + for (i = 0; i < data->pwm_num; i++) { + if (!(data->has_pwm & (1 << i))) + continue; + err = sysfs_create_group(&dev->kobj, &nct6775_group_pwm[i]); + if (err) + goto exit_remove; + } + for (i = 0; i < ARRAY_SIZE(sda_auto_pwm_arrays); i++) { + struct sensor_device_attribute_2 *attr = + &sda_auto_pwm_arrays[i]; + + if (!(data->has_pwm & (1 << attr->nr))) + continue; + if (attr->index > data->auto_pwm_num) + continue; + err = device_create_file(dev, &attr->dev_attr); + if (err) + goto exit_remove; + } + + if (data->REG_FAN_STEP_OUTPUT) { + for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) { + struct sensor_device_attribute *attr = + &sda_sf3_max_step_arrays[i]; + if (!(data->has_pwm & (1 << attr->index))) + continue; + err = device_create_file(dev, &attr->dev_attr); + if (err) + goto exit_remove; + } + } + + for (i = 0; i < data->in_num; i++) { + if (!(data->have_in & (1 << i))) + continue; + err = sysfs_create_group(&dev->kobj, &nct6775_group_in[i]); + if (err) + goto exit_remove; + } + + for (i = 0; i < 5; i++) { + if (data->has_fan & (1 << i)) { + err = device_create_file(dev, + &sda_fan_input[i].dev_attr); + if (err) + goto exit_remove; + err = device_create_file(dev, + &sda_fan_alarm[i].dev_attr); + if (err) + goto exit_remove; + if (sio_data->kind != nct6776 && + sio_data->kind != nct6779) { + err = device_create_file(dev, + &sda_fan_div[i].dev_attr); + if (err) + goto exit_remove; + } + if (data->has_fan_min & (1 << i)) { + err = device_create_file(dev, + &sda_fan_min[i].dev_attr); + if (err) + goto exit_remove; + } + } + } + + for (i = 0; i < NUM_REG_TEMP; i++) { + if (!(data->have_temp & (1 << i))) + continue; + err = device_create_file(dev, &sda_temp_input[i].dev_attr); + if (err) + goto exit_remove; + if (data->temp_label) { + err = device_create_file(dev, + &sda_temp_label[i].dev_attr); + if (err) + goto exit_remove; + } + if (data->reg_temp_over[i]) { + err = device_create_file(dev, + &sda_temp_max[i].dev_attr); + if (err) + goto exit_remove; + } + if (data->reg_temp_hyst[i]) { + err = device_create_file(dev, + &sda_temp_max_hyst[i].dev_attr); + if (err) + goto exit_remove; + } + if (i > 2) + continue; + err = device_create_file(dev, &sda_temp_alarm[i].dev_attr); + if (err) + goto exit_remove; + err = device_create_file(dev, &sda_temp_type[i].dev_attr); + if (err) + goto exit_remove; + } + + err = device_create_file(dev, &sda_caseopen[0].dev_attr); + if (err) + goto exit_remove; + + if (sio_data->kind == nct6776 || sio_data->kind == nct6779) { + err = device_create_file(dev, &sda_caseopen[1].dev_attr); + if (err) + goto exit_remove; + } + + err = device_create_file(dev, &dev_attr_name); + if (err) + goto exit_remove; + + data->hwmon_dev = hwmon_device_register(dev); + if (IS_ERR(data->hwmon_dev)) { + err = PTR_ERR(data->hwmon_dev); + goto exit_remove; + } + + return 0; + +exit_remove: + nct6775_device_remove_files(dev); +exit_release: + platform_set_drvdata(pdev, NULL); + release_region(res->start, IOREGION_LENGTH); +exit: + return err; +} + +static int __devexit nct6775_remove(struct platform_device *pdev) +{ + struct nct6775_data *data = platform_get_drvdata(pdev); + + hwmon_device_unregister(data->hwmon_dev); + nct6775_device_remove_files(&pdev->dev); + release_region(data->addr, IOREGION_LENGTH); + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static struct platform_driver nct6775_driver = { + .driver = { + .owner = THIS_MODULE, + .name = DRVNAME, + }, + .probe = nct6775_probe, + .remove = __devexit_p(nct6775_remove), +}; + +/* nct6775_find() looks for a '627 in the Super-I/O config space */ +static int __init nct6775_find(int sioaddr, unsigned short *addr, + struct nct6775_sio_data *sio_data) +{ + static const char __initdata sio_name_NCT6775[] = "NCT6775F"; + static const char __initdata sio_name_NCT6776[] = "NCT6776F"; + static const char __initdata sio_name_NCT6779[] = "NCT6779F"; + + u16 val; + const char *sio_name; + + superio_enter(sioaddr); + + if (force_id) + val = force_id; + else + val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8) + | superio_inb(sioaddr, SIO_REG_DEVID + 1); + switch (val & SIO_ID_MASK) { + case SIO_NCT6775_ID: + sio_data->kind = nct6775; + sio_name = sio_name_NCT6775; + break; + case SIO_NCT6776_ID: + sio_data->kind = nct6776; + sio_name = sio_name_NCT6776; + break; + case SIO_NCT6779_ID: + sio_data->kind = nct6779; + sio_name = sio_name_NCT6779; + 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); + } + + superio_exit(sioaddr); + pr_info("Found %s chip at %#x\n", sio_name, *addr); + sio_data->sioreg = sioaddr; + + return 0; +} + +/* + * 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 platform_device_alloc(), we + * must keep track of the device + */ +static struct platform_device *pdev; + +static int __init sensors_nct6775_init(void) +{ + int err; + unsigned short address; + struct resource res; + struct nct6775_sio_data sio_data; + + /* + * 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() + */ + if (nct6775_find(0x2e, &address, &sio_data) && + nct6775_find(0x4e, &address, &sio_data)) + return -ENODEV; + + err = platform_driver_register(&nct6775_driver); + if (err) + goto exit; + + pdev = platform_device_alloc(DRVNAME, address); + if (!pdev) { + err = -ENOMEM; + pr_err("Device allocation failed\n"); + goto exit_unregister; + } + + err = platform_device_add_data(pdev, &sio_data, + sizeof(struct nct6775_sio_data)); + if (err) { + pr_err("Platform data allocation failed\n"); + 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) + goto exit_device_put; + + err = platform_device_add_resources(pdev, &res, 1); + if (err) { + pr_err("Device resource addition failed (%d)\n", err); + goto exit_device_put; + } + + /* platform_device_add calls probe() */ + err = platform_device_add(pdev); + if (err) { + pr_err("Device addition failed (%d)\n", err); + goto exit_device_put; + } + + return 0; + +exit_device_put: + platform_device_put(pdev); +exit_unregister: + platform_driver_unregister(&nct6775_driver); +exit: + return err; +} + +static void __exit sensors_nct6775_exit(void) +{ + platform_device_unregister(pdev); + platform_driver_unregister(&nct6775_driver); +} + +MODULE_AUTHOR("Guenter Roeck "); +MODULE_DESCRIPTION("NCT677x driver"); +MODULE_LICENSE("GPL"); + +module_init(sensors_nct6775_init); +module_exit(sensors_nct6775_exit); -- 2.39.5