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2150 lines
59 KiB
2150 lines
59 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* w83793.c - Linux kernel driver for hardware monitoring |
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* Copyright (C) 2006 Winbond Electronics Corp. |
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* Yuan Mu |
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* Rudolf Marek <[email protected]> |
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* Copyright (C) 2009-2010 Sven Anders <[email protected]>, ANDURAS AG. |
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* Watchdog driver part |
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* (Based partially on fschmd driver, |
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* Copyright 2007-2008 by Hans de Goede) |
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*/ |
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|
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/* |
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* Supports following chips: |
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* |
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* Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA |
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* w83793 10 12 8 6 0x7b 0x5ca3 yes no |
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*/ |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/i2c.h> |
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#include <linux/hwmon.h> |
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#include <linux/hwmon-vid.h> |
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#include <linux/hwmon-sysfs.h> |
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#include <linux/err.h> |
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#include <linux/mutex.h> |
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#include <linux/fs.h> |
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#include <linux/watchdog.h> |
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#include <linux/miscdevice.h> |
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#include <linux/uaccess.h> |
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#include <linux/kref.h> |
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#include <linux/notifier.h> |
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#include <linux/reboot.h> |
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#include <linux/jiffies.h> |
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|
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/* Default values */ |
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#define WATCHDOG_TIMEOUT 2 /* 2 minute default timeout */ |
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|
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/* Addresses to scan */ |
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static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, |
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I2C_CLIENT_END }; |
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|
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/* Insmod parameters */ |
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static unsigned short force_subclients[4]; |
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module_param_array(force_subclients, short, NULL, 0); |
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MODULE_PARM_DESC(force_subclients, |
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"List of subclient addresses: {bus, clientaddr, subclientaddr1, subclientaddr2}"); |
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static bool reset; |
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module_param(reset, bool, 0); |
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MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended"); |
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|
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static int timeout = WATCHDOG_TIMEOUT; /* default timeout in minutes */ |
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module_param(timeout, int, 0); |
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MODULE_PARM_DESC(timeout, |
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"Watchdog timeout in minutes. 2<= timeout <=255 (default=" |
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__MODULE_STRING(WATCHDOG_TIMEOUT) ")"); |
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|
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static bool nowayout = WATCHDOG_NOWAYOUT; |
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module_param(nowayout, bool, 0); |
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MODULE_PARM_DESC(nowayout, |
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"Watchdog cannot be stopped once started (default=" |
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__MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); |
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|
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/* |
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* Address 0x00, 0x0d, 0x0e, 0x0f in all three banks are reserved |
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* as ID, Bank Select registers |
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*/ |
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#define W83793_REG_BANKSEL 0x00 |
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#define W83793_REG_VENDORID 0x0d |
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#define W83793_REG_CHIPID 0x0e |
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#define W83793_REG_DEVICEID 0x0f |
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|
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#define W83793_REG_CONFIG 0x40 |
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#define W83793_REG_MFC 0x58 |
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#define W83793_REG_FANIN_CTRL 0x5c |
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#define W83793_REG_FANIN_SEL 0x5d |
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#define W83793_REG_I2C_ADDR 0x0b |
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#define W83793_REG_I2C_SUBADDR 0x0c |
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#define W83793_REG_VID_INA 0x05 |
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#define W83793_REG_VID_INB 0x06 |
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#define W83793_REG_VID_LATCHA 0x07 |
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#define W83793_REG_VID_LATCHB 0x08 |
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#define W83793_REG_VID_CTRL 0x59 |
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|
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#define W83793_REG_WDT_LOCK 0x01 |
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#define W83793_REG_WDT_ENABLE 0x02 |
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#define W83793_REG_WDT_STATUS 0x03 |
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#define W83793_REG_WDT_TIMEOUT 0x04 |
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static u16 W83793_REG_TEMP_MODE[2] = { 0x5e, 0x5f }; |
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#define TEMP_READ 0 |
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#define TEMP_CRIT 1 |
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#define TEMP_CRIT_HYST 2 |
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#define TEMP_WARN 3 |
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#define TEMP_WARN_HYST 4 |
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/* |
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* only crit and crit_hyst affect real-time alarm status |
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* current crit crit_hyst warn warn_hyst |
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*/ |
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static u16 W83793_REG_TEMP[][5] = { |
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{0x1c, 0x78, 0x79, 0x7a, 0x7b}, |
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{0x1d, 0x7c, 0x7d, 0x7e, 0x7f}, |
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{0x1e, 0x80, 0x81, 0x82, 0x83}, |
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{0x1f, 0x84, 0x85, 0x86, 0x87}, |
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{0x20, 0x88, 0x89, 0x8a, 0x8b}, |
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{0x21, 0x8c, 0x8d, 0x8e, 0x8f}, |
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}; |
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#define W83793_REG_TEMP_LOW_BITS 0x22 |
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|
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#define W83793_REG_BEEP(index) (0x53 + (index)) |
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#define W83793_REG_ALARM(index) (0x4b + (index)) |
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|
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#define W83793_REG_CLR_CHASSIS 0x4a /* SMI MASK4 */ |
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#define W83793_REG_IRQ_CTRL 0x50 |
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#define W83793_REG_OVT_CTRL 0x51 |
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#define W83793_REG_OVT_BEEP 0x52 |
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#define IN_READ 0 |
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#define IN_MAX 1 |
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#define IN_LOW 2 |
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static const u16 W83793_REG_IN[][3] = { |
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/* Current, High, Low */ |
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{0x10, 0x60, 0x61}, /* Vcore A */ |
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{0x11, 0x62, 0x63}, /* Vcore B */ |
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{0x12, 0x64, 0x65}, /* Vtt */ |
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{0x14, 0x6a, 0x6b}, /* VSEN1 */ |
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{0x15, 0x6c, 0x6d}, /* VSEN2 */ |
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{0x16, 0x6e, 0x6f}, /* +3VSEN */ |
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{0x17, 0x70, 0x71}, /* +12VSEN */ |
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{0x18, 0x72, 0x73}, /* 5VDD */ |
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{0x19, 0x74, 0x75}, /* 5VSB */ |
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{0x1a, 0x76, 0x77}, /* VBAT */ |
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}; |
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/* Low Bits of Vcore A/B Vtt Read/High/Low */ |
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static const u16 W83793_REG_IN_LOW_BITS[] = { 0x1b, 0x68, 0x69 }; |
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static u8 scale_in[] = { 2, 2, 2, 16, 16, 16, 8, 24, 24, 16 }; |
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static u8 scale_in_add[] = { 0, 0, 0, 0, 0, 0, 0, 150, 150, 0 }; |
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#define W83793_REG_FAN(index) (0x23 + 2 * (index)) /* High byte */ |
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#define W83793_REG_FAN_MIN(index) (0x90 + 2 * (index)) /* High byte */ |
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#define W83793_REG_PWM_DEFAULT 0xb2 |
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#define W83793_REG_PWM_ENABLE 0x207 |
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#define W83793_REG_PWM_UPTIME 0xc3 /* Unit in 0.1 second */ |
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#define W83793_REG_PWM_DOWNTIME 0xc4 /* Unit in 0.1 second */ |
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#define W83793_REG_TEMP_CRITICAL 0xc5 |
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|
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#define PWM_DUTY 0 |
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#define PWM_START 1 |
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#define PWM_NONSTOP 2 |
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#define PWM_STOP_TIME 3 |
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#define W83793_REG_PWM(index, nr) (((nr) == 0 ? 0xb3 : \ |
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(nr) == 1 ? 0x220 : 0x218) + (index)) |
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|
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/* bit field, fan1 is bit0, fan2 is bit1 ... */ |
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#define W83793_REG_TEMP_FAN_MAP(index) (0x201 + (index)) |
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#define W83793_REG_TEMP_TOL(index) (0x208 + (index)) |
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#define W83793_REG_TEMP_CRUISE(index) (0x210 + (index)) |
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#define W83793_REG_PWM_STOP_TIME(index) (0x228 + (index)) |
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#define W83793_REG_SF2_TEMP(index, nr) (0x230 + ((index) << 4) + (nr)) |
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#define W83793_REG_SF2_PWM(index, nr) (0x238 + ((index) << 4) + (nr)) |
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|
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static inline unsigned long FAN_FROM_REG(u16 val) |
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{ |
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if ((val >= 0xfff) || (val == 0)) |
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return 0; |
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return 1350000UL / val; |
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} |
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|
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static inline u16 FAN_TO_REG(long rpm) |
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{ |
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if (rpm <= 0) |
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return 0x0fff; |
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return clamp_val((1350000 + (rpm >> 1)) / rpm, 1, 0xffe); |
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} |
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|
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static inline unsigned long TIME_FROM_REG(u8 reg) |
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{ |
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return reg * 100; |
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} |
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static inline u8 TIME_TO_REG(unsigned long val) |
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{ |
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return clamp_val((val + 50) / 100, 0, 0xff); |
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} |
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static inline long TEMP_FROM_REG(s8 reg) |
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{ |
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return reg * 1000; |
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} |
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static inline s8 TEMP_TO_REG(long val, s8 min, s8 max) |
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{ |
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return clamp_val((val + (val < 0 ? -500 : 500)) / 1000, min, max); |
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} |
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struct w83793_data { |
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struct i2c_client *lm75[2]; |
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struct device *hwmon_dev; |
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struct mutex update_lock; |
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char valid; /* !=0 if following fields are valid */ |
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unsigned long last_updated; /* In jiffies */ |
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unsigned long last_nonvolatile; /* In jiffies, last time we update the |
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* nonvolatile registers |
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*/ |
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u8 bank; |
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u8 vrm; |
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u8 vid[2]; |
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u8 in[10][3]; /* Register value, read/high/low */ |
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u8 in_low_bits[3]; /* Additional resolution for VCore A/B Vtt */ |
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u16 has_fan; /* Only fan1- fan5 has own pins */ |
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u16 fan[12]; /* Register value combine */ |
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u16 fan_min[12]; /* Register value combine */ |
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s8 temp[6][5]; /* current, crit, crit_hyst,warn, warn_hyst */ |
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u8 temp_low_bits; /* Additional resolution TD1-TD4 */ |
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u8 temp_mode[2]; /* byte 0: Temp D1-D4 mode each has 2 bits |
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* byte 1: Temp R1,R2 mode, each has 1 bit |
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*/ |
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u8 temp_critical; /* If reached all fan will be at full speed */ |
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u8 temp_fan_map[6]; /* Temp controls which pwm fan, bit field */ |
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u8 has_pwm; |
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u8 has_temp; |
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u8 has_vid; |
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u8 pwm_enable; /* Register value, each Temp has 1 bit */ |
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u8 pwm_uptime; /* Register value */ |
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u8 pwm_downtime; /* Register value */ |
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u8 pwm_default; /* All fan default pwm, next poweron valid */ |
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u8 pwm[8][3]; /* Register value */ |
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u8 pwm_stop_time[8]; |
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u8 temp_cruise[6]; |
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u8 alarms[5]; /* realtime status registers */ |
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u8 beeps[5]; |
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u8 beep_enable; |
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u8 tolerance[3]; /* Temp tolerance(Smart Fan I/II) */ |
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u8 sf2_pwm[6][7]; /* Smart FanII: Fan duty cycle */ |
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u8 sf2_temp[6][7]; /* Smart FanII: Temp level point */ |
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/* watchdog */ |
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struct i2c_client *client; |
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struct mutex watchdog_lock; |
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struct list_head list; /* member of the watchdog_data_list */ |
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struct kref kref; |
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struct miscdevice watchdog_miscdev; |
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unsigned long watchdog_is_open; |
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char watchdog_expect_close; |
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char watchdog_name[10]; /* must be unique to avoid sysfs conflict */ |
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unsigned int watchdog_caused_reboot; |
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int watchdog_timeout; /* watchdog timeout in minutes */ |
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}; |
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/* |
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* Somewhat ugly :( global data pointer list with all devices, so that |
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* we can find our device data as when using misc_register. There is no |
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* other method to get to one's device data from the open file-op and |
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* for usage in the reboot notifier callback. |
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*/ |
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static LIST_HEAD(watchdog_data_list); |
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|
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/* Note this lock not only protect list access, but also data.kref access */ |
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static DEFINE_MUTEX(watchdog_data_mutex); |
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/* |
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* Release our data struct when we're detached from the i2c client *and* all |
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* references to our watchdog device are released |
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*/ |
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static void w83793_release_resources(struct kref *ref) |
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{ |
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struct w83793_data *data = container_of(ref, struct w83793_data, kref); |
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kfree(data); |
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} |
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static u8 w83793_read_value(struct i2c_client *client, u16 reg); |
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static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value); |
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static int w83793_probe(struct i2c_client *client); |
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static int w83793_detect(struct i2c_client *client, |
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struct i2c_board_info *info); |
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static int w83793_remove(struct i2c_client *client); |
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static void w83793_init_client(struct i2c_client *client); |
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static void w83793_update_nonvolatile(struct device *dev); |
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static struct w83793_data *w83793_update_device(struct device *dev); |
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static const struct i2c_device_id w83793_id[] = { |
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{ "w83793", 0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, w83793_id); |
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static struct i2c_driver w83793_driver = { |
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.class = I2C_CLASS_HWMON, |
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.driver = { |
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.name = "w83793", |
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}, |
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.probe_new = w83793_probe, |
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.remove = w83793_remove, |
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.id_table = w83793_id, |
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.detect = w83793_detect, |
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.address_list = normal_i2c, |
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}; |
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static ssize_t |
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vrm_show(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct w83793_data *data = dev_get_drvdata(dev); |
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return sprintf(buf, "%d\n", data->vrm); |
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} |
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static ssize_t |
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show_vid(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct w83793_data *data = w83793_update_device(dev); |
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struct sensor_device_attribute_2 *sensor_attr = |
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to_sensor_dev_attr_2(attr); |
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int index = sensor_attr->index; |
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return sprintf(buf, "%d\n", vid_from_reg(data->vid[index], data->vrm)); |
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} |
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static ssize_t |
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vrm_store(struct device *dev, struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct w83793_data *data = dev_get_drvdata(dev); |
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unsigned long val; |
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int err; |
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err = kstrtoul(buf, 10, &val); |
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if (err) |
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return err; |
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if (val > 255) |
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return -EINVAL; |
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data->vrm = val; |
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return count; |
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} |
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#define ALARM_STATUS 0 |
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#define BEEP_ENABLE 1 |
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static ssize_t |
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show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct w83793_data *data = w83793_update_device(dev); |
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struct sensor_device_attribute_2 *sensor_attr = |
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to_sensor_dev_attr_2(attr); |
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int nr = sensor_attr->nr; |
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int index = sensor_attr->index >> 3; |
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int bit = sensor_attr->index & 0x07; |
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u8 val; |
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if (nr == ALARM_STATUS) { |
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val = (data->alarms[index] >> (bit)) & 1; |
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} else { /* BEEP_ENABLE */ |
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val = (data->beeps[index] >> (bit)) & 1; |
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} |
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return sprintf(buf, "%u\n", val); |
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} |
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static ssize_t |
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store_beep(struct device *dev, struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct i2c_client *client = to_i2c_client(dev); |
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struct w83793_data *data = i2c_get_clientdata(client); |
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struct sensor_device_attribute_2 *sensor_attr = |
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to_sensor_dev_attr_2(attr); |
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int index = sensor_attr->index >> 3; |
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int shift = sensor_attr->index & 0x07; |
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u8 beep_bit = 1 << shift; |
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unsigned long val; |
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int err; |
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err = kstrtoul(buf, 10, &val); |
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if (err) |
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return err; |
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|
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if (val > 1) |
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return -EINVAL; |
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mutex_lock(&data->update_lock); |
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data->beeps[index] = w83793_read_value(client, W83793_REG_BEEP(index)); |
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data->beeps[index] &= ~beep_bit; |
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data->beeps[index] |= val << shift; |
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w83793_write_value(client, W83793_REG_BEEP(index), data->beeps[index]); |
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mutex_unlock(&data->update_lock); |
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return count; |
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} |
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static ssize_t |
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show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct w83793_data *data = w83793_update_device(dev); |
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return sprintf(buf, "%u\n", (data->beep_enable >> 1) & 0x01); |
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} |
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static ssize_t |
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store_beep_enable(struct device *dev, struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct i2c_client *client = to_i2c_client(dev); |
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struct w83793_data *data = i2c_get_clientdata(client); |
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unsigned long val; |
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int err; |
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err = kstrtoul(buf, 10, &val); |
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if (err) |
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return err; |
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|
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if (val > 1) |
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return -EINVAL; |
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|
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mutex_lock(&data->update_lock); |
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data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP) |
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& 0xfd; |
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data->beep_enable |= val << 1; |
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w83793_write_value(client, W83793_REG_OVT_BEEP, data->beep_enable); |
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mutex_unlock(&data->update_lock); |
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|
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return count; |
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} |
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|
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/* Write 0 to clear chassis alarm */ |
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static ssize_t |
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store_chassis_clear(struct device *dev, |
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struct device_attribute *attr, const char *buf, |
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size_t count) |
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{ |
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struct i2c_client *client = to_i2c_client(dev); |
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struct w83793_data *data = i2c_get_clientdata(client); |
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unsigned long val; |
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u8 reg; |
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int err; |
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|
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err = kstrtoul(buf, 10, &val); |
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if (err) |
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return err; |
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if (val) |
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return -EINVAL; |
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mutex_lock(&data->update_lock); |
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reg = w83793_read_value(client, W83793_REG_CLR_CHASSIS); |
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w83793_write_value(client, W83793_REG_CLR_CHASSIS, reg | 0x80); |
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data->valid = 0; /* Force cache refresh */ |
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mutex_unlock(&data->update_lock); |
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return count; |
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} |
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|
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#define FAN_INPUT 0 |
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#define FAN_MIN 1 |
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static ssize_t |
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show_fan(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct sensor_device_attribute_2 *sensor_attr = |
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to_sensor_dev_attr_2(attr); |
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int nr = sensor_attr->nr; |
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int index = sensor_attr->index; |
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struct w83793_data *data = w83793_update_device(dev); |
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u16 val; |
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|
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if (nr == FAN_INPUT) |
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val = data->fan[index] & 0x0fff; |
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else |
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val = data->fan_min[index] & 0x0fff; |
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|
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return sprintf(buf, "%lu\n", FAN_FROM_REG(val)); |
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} |
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|
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static ssize_t |
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store_fan_min(struct device *dev, struct device_attribute *attr, |
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const char *buf, size_t count) |
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{ |
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struct sensor_device_attribute_2 *sensor_attr = |
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to_sensor_dev_attr_2(attr); |
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int index = sensor_attr->index; |
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struct i2c_client *client = to_i2c_client(dev); |
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struct w83793_data *data = i2c_get_clientdata(client); |
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unsigned long val; |
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int err; |
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|
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err = kstrtoul(buf, 10, &val); |
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if (err) |
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return err; |
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val = FAN_TO_REG(val); |
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|
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mutex_lock(&data->update_lock); |
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data->fan_min[index] = val; |
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w83793_write_value(client, W83793_REG_FAN_MIN(index), |
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(val >> 8) & 0xff); |
|
w83793_write_value(client, W83793_REG_FAN_MIN(index) + 1, val & 0xff); |
|
mutex_unlock(&data->update_lock); |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t |
|
show_pwm(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
struct w83793_data *data = w83793_update_device(dev); |
|
u16 val; |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
|
|
if (nr == PWM_STOP_TIME) |
|
val = TIME_FROM_REG(data->pwm_stop_time[index]); |
|
else |
|
val = (data->pwm[index][nr] & 0x3f) << 2; |
|
|
|
return sprintf(buf, "%d\n", val); |
|
} |
|
|
|
static ssize_t |
|
store_pwm(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
if (nr == PWM_STOP_TIME) { |
|
val = TIME_TO_REG(val); |
|
data->pwm_stop_time[index] = val; |
|
w83793_write_value(client, W83793_REG_PWM_STOP_TIME(index), |
|
val); |
|
} else { |
|
val = clamp_val(val, 0, 0xff) >> 2; |
|
data->pwm[index][nr] = |
|
w83793_read_value(client, W83793_REG_PWM(index, nr)) & 0xc0; |
|
data->pwm[index][nr] |= val; |
|
w83793_write_value(client, W83793_REG_PWM(index, nr), |
|
data->pwm[index][nr]); |
|
} |
|
|
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static ssize_t |
|
show_temp(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
struct w83793_data *data = w83793_update_device(dev); |
|
long temp = TEMP_FROM_REG(data->temp[index][nr]); |
|
|
|
if (nr == TEMP_READ && index < 4) { /* Only TD1-TD4 have low bits */ |
|
int low = ((data->temp_low_bits >> (index * 2)) & 0x03) * 250; |
|
temp += temp > 0 ? low : -low; |
|
} |
|
return sprintf(buf, "%ld\n", temp); |
|
} |
|
|
|
static ssize_t |
|
store_temp(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
long tmp; |
|
int err; |
|
|
|
err = kstrtol(buf, 10, &tmp); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
data->temp[index][nr] = TEMP_TO_REG(tmp, -128, 127); |
|
w83793_write_value(client, W83793_REG_TEMP[index][nr], |
|
data->temp[index][nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
/* |
|
* TD1-TD4 |
|
* each has 4 mode:(2 bits) |
|
* 0: Stop monitor |
|
* 1: Use internal temp sensor(default) |
|
* 2: Reserved |
|
* 3: Use sensor in Intel CPU and get result by PECI |
|
* |
|
* TR1-TR2 |
|
* each has 2 mode:(1 bit) |
|
* 0: Disable temp sensor monitor |
|
* 1: To enable temp sensors monitor |
|
*/ |
|
|
|
/* 0 disable, 6 PECI */ |
|
static u8 TO_TEMP_MODE[] = { 0, 0, 0, 6 }; |
|
|
|
static ssize_t |
|
show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct w83793_data *data = w83793_update_device(dev); |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int index = sensor_attr->index; |
|
u8 mask = (index < 4) ? 0x03 : 0x01; |
|
u8 shift = (index < 4) ? (2 * index) : (index - 4); |
|
u8 tmp; |
|
index = (index < 4) ? 0 : 1; |
|
|
|
tmp = (data->temp_mode[index] >> shift) & mask; |
|
|
|
/* for the internal sensor, found out if diode or thermistor */ |
|
if (tmp == 1) |
|
tmp = index == 0 ? 3 : 4; |
|
else |
|
tmp = TO_TEMP_MODE[tmp]; |
|
|
|
return sprintf(buf, "%d\n", tmp); |
|
} |
|
|
|
static ssize_t |
|
store_temp_mode(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int index = sensor_attr->index; |
|
u8 mask = (index < 4) ? 0x03 : 0x01; |
|
u8 shift = (index < 4) ? (2 * index) : (index - 4); |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
/* transform the sysfs interface values into table above */ |
|
if ((val == 6) && (index < 4)) { |
|
val -= 3; |
|
} else if ((val == 3 && index < 4) |
|
|| (val == 4 && index >= 4)) { |
|
/* transform diode or thermistor into internal enable */ |
|
val = !!val; |
|
} else { |
|
return -EINVAL; |
|
} |
|
|
|
index = (index < 4) ? 0 : 1; |
|
mutex_lock(&data->update_lock); |
|
data->temp_mode[index] = |
|
w83793_read_value(client, W83793_REG_TEMP_MODE[index]); |
|
data->temp_mode[index] &= ~(mask << shift); |
|
data->temp_mode[index] |= val << shift; |
|
w83793_write_value(client, W83793_REG_TEMP_MODE[index], |
|
data->temp_mode[index]); |
|
mutex_unlock(&data->update_lock); |
|
|
|
return count; |
|
} |
|
|
|
#define SETUP_PWM_DEFAULT 0 |
|
#define SETUP_PWM_UPTIME 1 /* Unit in 0.1s */ |
|
#define SETUP_PWM_DOWNTIME 2 /* Unit in 0.1s */ |
|
#define SETUP_TEMP_CRITICAL 3 |
|
static ssize_t |
|
show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
struct w83793_data *data = w83793_update_device(dev); |
|
u32 val = 0; |
|
|
|
if (nr == SETUP_PWM_DEFAULT) |
|
val = (data->pwm_default & 0x3f) << 2; |
|
else if (nr == SETUP_PWM_UPTIME) |
|
val = TIME_FROM_REG(data->pwm_uptime); |
|
else if (nr == SETUP_PWM_DOWNTIME) |
|
val = TIME_FROM_REG(data->pwm_downtime); |
|
else if (nr == SETUP_TEMP_CRITICAL) |
|
val = TEMP_FROM_REG(data->temp_critical & 0x7f); |
|
|
|
return sprintf(buf, "%d\n", val); |
|
} |
|
|
|
static ssize_t |
|
store_sf_setup(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
long val; |
|
int err; |
|
|
|
err = kstrtol(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
if (nr == SETUP_PWM_DEFAULT) { |
|
data->pwm_default = |
|
w83793_read_value(client, W83793_REG_PWM_DEFAULT) & 0xc0; |
|
data->pwm_default |= clamp_val(val, 0, 0xff) >> 2; |
|
w83793_write_value(client, W83793_REG_PWM_DEFAULT, |
|
data->pwm_default); |
|
} else if (nr == SETUP_PWM_UPTIME) { |
|
data->pwm_uptime = TIME_TO_REG(val); |
|
data->pwm_uptime += data->pwm_uptime == 0 ? 1 : 0; |
|
w83793_write_value(client, W83793_REG_PWM_UPTIME, |
|
data->pwm_uptime); |
|
} else if (nr == SETUP_PWM_DOWNTIME) { |
|
data->pwm_downtime = TIME_TO_REG(val); |
|
data->pwm_downtime += data->pwm_downtime == 0 ? 1 : 0; |
|
w83793_write_value(client, W83793_REG_PWM_DOWNTIME, |
|
data->pwm_downtime); |
|
} else { /* SETUP_TEMP_CRITICAL */ |
|
data->temp_critical = |
|
w83793_read_value(client, W83793_REG_TEMP_CRITICAL) & 0x80; |
|
data->temp_critical |= TEMP_TO_REG(val, 0, 0x7f); |
|
w83793_write_value(client, W83793_REG_TEMP_CRITICAL, |
|
data->temp_critical); |
|
} |
|
|
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
/* |
|
* Temp SmartFan control |
|
* TEMP_FAN_MAP |
|
* Temp channel control which pwm fan, bitfield, bit 0 indicate pwm1... |
|
* It's possible two or more temp channels control the same fan, w83793 |
|
* always prefers to pick the most critical request and applies it to |
|
* the related Fan. |
|
* It's possible one fan is not in any mapping of 6 temp channels, this |
|
* means the fan is manual mode |
|
* |
|
* TEMP_PWM_ENABLE |
|
* Each temp channel has its own SmartFan mode, and temp channel |
|
* control fans that are set by TEMP_FAN_MAP |
|
* 0: SmartFanII mode |
|
* 1: Thermal Cruise Mode |
|
* |
|
* TEMP_CRUISE |
|
* Target temperature in thermal cruise mode, w83793 will try to turn |
|
* fan speed to keep the temperature of target device around this |
|
* temperature. |
|
* |
|
* TEMP_TOLERANCE |
|
* If Temp higher or lower than target with this tolerance, w83793 |
|
* will take actions to speed up or slow down the fan to keep the |
|
* temperature within the tolerance range. |
|
*/ |
|
|
|
#define TEMP_FAN_MAP 0 |
|
#define TEMP_PWM_ENABLE 1 |
|
#define TEMP_CRUISE 2 |
|
#define TEMP_TOLERANCE 3 |
|
static ssize_t |
|
show_sf_ctrl(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
struct w83793_data *data = w83793_update_device(dev); |
|
u32 val; |
|
|
|
if (nr == TEMP_FAN_MAP) { |
|
val = data->temp_fan_map[index]; |
|
} else if (nr == TEMP_PWM_ENABLE) { |
|
/* +2 to transform into 2 and 3 to conform with sysfs intf */ |
|
val = ((data->pwm_enable >> index) & 0x01) + 2; |
|
} else if (nr == TEMP_CRUISE) { |
|
val = TEMP_FROM_REG(data->temp_cruise[index] & 0x7f); |
|
} else { /* TEMP_TOLERANCE */ |
|
val = data->tolerance[index >> 1] >> ((index & 0x01) ? 4 : 0); |
|
val = TEMP_FROM_REG(val & 0x0f); |
|
} |
|
return sprintf(buf, "%d\n", val); |
|
} |
|
|
|
static ssize_t |
|
store_sf_ctrl(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
long val; |
|
int err; |
|
|
|
err = kstrtol(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
if (nr == TEMP_FAN_MAP) { |
|
val = clamp_val(val, 0, 255); |
|
w83793_write_value(client, W83793_REG_TEMP_FAN_MAP(index), val); |
|
data->temp_fan_map[index] = val; |
|
} else if (nr == TEMP_PWM_ENABLE) { |
|
if (val == 2 || val == 3) { |
|
data->pwm_enable = |
|
w83793_read_value(client, W83793_REG_PWM_ENABLE); |
|
if (val - 2) |
|
data->pwm_enable |= 1 << index; |
|
else |
|
data->pwm_enable &= ~(1 << index); |
|
w83793_write_value(client, W83793_REG_PWM_ENABLE, |
|
data->pwm_enable); |
|
} else { |
|
mutex_unlock(&data->update_lock); |
|
return -EINVAL; |
|
} |
|
} else if (nr == TEMP_CRUISE) { |
|
data->temp_cruise[index] = |
|
w83793_read_value(client, W83793_REG_TEMP_CRUISE(index)); |
|
data->temp_cruise[index] &= 0x80; |
|
data->temp_cruise[index] |= TEMP_TO_REG(val, 0, 0x7f); |
|
|
|
w83793_write_value(client, W83793_REG_TEMP_CRUISE(index), |
|
data->temp_cruise[index]); |
|
} else { /* TEMP_TOLERANCE */ |
|
int i = index >> 1; |
|
u8 shift = (index & 0x01) ? 4 : 0; |
|
data->tolerance[i] = |
|
w83793_read_value(client, W83793_REG_TEMP_TOL(i)); |
|
|
|
data->tolerance[i] &= ~(0x0f << shift); |
|
data->tolerance[i] |= TEMP_TO_REG(val, 0, 0x0f) << shift; |
|
w83793_write_value(client, W83793_REG_TEMP_TOL(i), |
|
data->tolerance[i]); |
|
} |
|
|
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static ssize_t |
|
show_sf2_pwm(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
struct w83793_data *data = w83793_update_device(dev); |
|
|
|
return sprintf(buf, "%d\n", (data->sf2_pwm[index][nr] & 0x3f) << 2); |
|
} |
|
|
|
static ssize_t |
|
store_sf2_pwm(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
val = clamp_val(val, 0, 0xff) >> 2; |
|
|
|
mutex_lock(&data->update_lock); |
|
data->sf2_pwm[index][nr] = |
|
w83793_read_value(client, W83793_REG_SF2_PWM(index, nr)) & 0xc0; |
|
data->sf2_pwm[index][nr] |= val; |
|
w83793_write_value(client, W83793_REG_SF2_PWM(index, nr), |
|
data->sf2_pwm[index][nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static ssize_t |
|
show_sf2_temp(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
struct w83793_data *data = w83793_update_device(dev); |
|
|
|
return sprintf(buf, "%ld\n", |
|
TEMP_FROM_REG(data->sf2_temp[index][nr] & 0x7f)); |
|
} |
|
|
|
static ssize_t |
|
store_sf2_temp(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
long val; |
|
int err; |
|
|
|
err = kstrtol(buf, 10, &val); |
|
if (err) |
|
return err; |
|
val = TEMP_TO_REG(val, 0, 0x7f); |
|
|
|
mutex_lock(&data->update_lock); |
|
data->sf2_temp[index][nr] = |
|
w83793_read_value(client, W83793_REG_SF2_TEMP(index, nr)) & 0x80; |
|
data->sf2_temp[index][nr] |= val; |
|
w83793_write_value(client, W83793_REG_SF2_TEMP(index, nr), |
|
data->sf2_temp[index][nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
/* only Vcore A/B and Vtt have additional 2 bits precision */ |
|
static ssize_t |
|
show_in(struct device *dev, struct device_attribute *attr, char *buf) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
struct w83793_data *data = w83793_update_device(dev); |
|
u16 val = data->in[index][nr]; |
|
|
|
if (index < 3) { |
|
val <<= 2; |
|
val += (data->in_low_bits[nr] >> (index * 2)) & 0x3; |
|
} |
|
/* voltage inputs 5VDD and 5VSB needs 150mV offset */ |
|
val = val * scale_in[index] + scale_in_add[index]; |
|
return sprintf(buf, "%d\n", val); |
|
} |
|
|
|
static ssize_t |
|
store_in(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct sensor_device_attribute_2 *sensor_attr = |
|
to_sensor_dev_attr_2(attr); |
|
int nr = sensor_attr->nr; |
|
int index = sensor_attr->index; |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
val = (val + scale_in[index] / 2) / scale_in[index]; |
|
|
|
mutex_lock(&data->update_lock); |
|
if (index > 2) { |
|
/* fix the limit values of 5VDD and 5VSB to ALARM mechanism */ |
|
if (nr == 1 || nr == 2) |
|
val -= scale_in_add[index] / scale_in[index]; |
|
val = clamp_val(val, 0, 255); |
|
} else { |
|
val = clamp_val(val, 0, 0x3FF); |
|
data->in_low_bits[nr] = |
|
w83793_read_value(client, W83793_REG_IN_LOW_BITS[nr]); |
|
data->in_low_bits[nr] &= ~(0x03 << (2 * index)); |
|
data->in_low_bits[nr] |= (val & 0x03) << (2 * index); |
|
w83793_write_value(client, W83793_REG_IN_LOW_BITS[nr], |
|
data->in_low_bits[nr]); |
|
val >>= 2; |
|
} |
|
data->in[index][nr] = val; |
|
w83793_write_value(client, W83793_REG_IN[index][nr], |
|
data->in[index][nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
#define NOT_USED -1 |
|
|
|
#define SENSOR_ATTR_IN(index) \ |
|
SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ |
|
IN_READ, index), \ |
|
SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \ |
|
store_in, IN_MAX, index), \ |
|
SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \ |
|
store_in, IN_LOW, index), \ |
|
SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \ |
|
NULL, ALARM_STATUS, index + ((index > 2) ? 1 : 0)), \ |
|
SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \ |
|
show_alarm_beep, store_beep, BEEP_ENABLE, \ |
|
index + ((index > 2) ? 1 : 0)) |
|
|
|
#define SENSOR_ATTR_FAN(index) \ |
|
SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \ |
|
NULL, ALARM_STATUS, index + 17), \ |
|
SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \ |
|
show_alarm_beep, store_beep, BEEP_ENABLE, index + 17), \ |
|
SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ |
|
NULL, FAN_INPUT, index - 1), \ |
|
SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \ |
|
show_fan, store_fan_min, FAN_MIN, index - 1) |
|
|
|
#define SENSOR_ATTR_PWM(index) \ |
|
SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \ |
|
store_pwm, PWM_DUTY, index - 1), \ |
|
SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \ |
|
show_pwm, store_pwm, PWM_NONSTOP, index - 1), \ |
|
SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \ |
|
show_pwm, store_pwm, PWM_START, index - 1), \ |
|
SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \ |
|
show_pwm, store_pwm, PWM_STOP_TIME, index - 1) |
|
|
|
#define SENSOR_ATTR_TEMP(index) \ |
|
SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR, \ |
|
show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \ |
|
NULL, TEMP_READ, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \ |
|
store_temp, TEMP_CRIT, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ |
|
show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \ |
|
store_temp, TEMP_WARN, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR, \ |
|
show_temp, store_temp, TEMP_WARN_HYST, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ |
|
show_alarm_beep, NULL, ALARM_STATUS, index + 11), \ |
|
SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ |
|
show_alarm_beep, store_beep, BEEP_ENABLE, index + 11), \ |
|
SENSOR_ATTR_2(temp##index##_auto_channels_pwm, \ |
|
S_IRUGO | S_IWUSR, show_sf_ctrl, store_sf_ctrl, \ |
|
TEMP_FAN_MAP, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \ |
|
show_sf_ctrl, store_sf_ctrl, TEMP_PWM_ENABLE, \ |
|
index - 1), \ |
|
SENSOR_ATTR_2(thermal_cruise##index, S_IRUGO | S_IWUSR, \ |
|
show_sf_ctrl, store_sf_ctrl, TEMP_CRUISE, index - 1), \ |
|
SENSOR_ATTR_2(tolerance##index, S_IRUGO | S_IWUSR, show_sf_ctrl,\ |
|
store_sf_ctrl, TEMP_TOLERANCE, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \ |
|
show_sf2_pwm, store_sf2_pwm, 0, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \ |
|
show_sf2_pwm, store_sf2_pwm, 1, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \ |
|
show_sf2_pwm, store_sf2_pwm, 2, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \ |
|
show_sf2_pwm, store_sf2_pwm, 3, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \ |
|
show_sf2_pwm, store_sf2_pwm, 4, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \ |
|
show_sf2_pwm, store_sf2_pwm, 5, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \ |
|
show_sf2_pwm, store_sf2_pwm, 6, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\ |
|
show_sf2_temp, store_sf2_temp, 0, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\ |
|
show_sf2_temp, store_sf2_temp, 1, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\ |
|
show_sf2_temp, store_sf2_temp, 2, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\ |
|
show_sf2_temp, store_sf2_temp, 3, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\ |
|
show_sf2_temp, store_sf2_temp, 4, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\ |
|
show_sf2_temp, store_sf2_temp, 5, index - 1), \ |
|
SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\ |
|
show_sf2_temp, store_sf2_temp, 6, index - 1) |
|
|
|
static struct sensor_device_attribute_2 w83793_sensor_attr_2[] = { |
|
SENSOR_ATTR_IN(0), |
|
SENSOR_ATTR_IN(1), |
|
SENSOR_ATTR_IN(2), |
|
SENSOR_ATTR_IN(3), |
|
SENSOR_ATTR_IN(4), |
|
SENSOR_ATTR_IN(5), |
|
SENSOR_ATTR_IN(6), |
|
SENSOR_ATTR_IN(7), |
|
SENSOR_ATTR_IN(8), |
|
SENSOR_ATTR_IN(9), |
|
SENSOR_ATTR_FAN(1), |
|
SENSOR_ATTR_FAN(2), |
|
SENSOR_ATTR_FAN(3), |
|
SENSOR_ATTR_FAN(4), |
|
SENSOR_ATTR_FAN(5), |
|
SENSOR_ATTR_PWM(1), |
|
SENSOR_ATTR_PWM(2), |
|
SENSOR_ATTR_PWM(3), |
|
}; |
|
|
|
static struct sensor_device_attribute_2 w83793_temp[] = { |
|
SENSOR_ATTR_TEMP(1), |
|
SENSOR_ATTR_TEMP(2), |
|
SENSOR_ATTR_TEMP(3), |
|
SENSOR_ATTR_TEMP(4), |
|
SENSOR_ATTR_TEMP(5), |
|
SENSOR_ATTR_TEMP(6), |
|
}; |
|
|
|
/* Fan6-Fan12 */ |
|
static struct sensor_device_attribute_2 w83793_left_fan[] = { |
|
SENSOR_ATTR_FAN(6), |
|
SENSOR_ATTR_FAN(7), |
|
SENSOR_ATTR_FAN(8), |
|
SENSOR_ATTR_FAN(9), |
|
SENSOR_ATTR_FAN(10), |
|
SENSOR_ATTR_FAN(11), |
|
SENSOR_ATTR_FAN(12), |
|
}; |
|
|
|
/* Pwm4-Pwm8 */ |
|
static struct sensor_device_attribute_2 w83793_left_pwm[] = { |
|
SENSOR_ATTR_PWM(4), |
|
SENSOR_ATTR_PWM(5), |
|
SENSOR_ATTR_PWM(6), |
|
SENSOR_ATTR_PWM(7), |
|
SENSOR_ATTR_PWM(8), |
|
}; |
|
|
|
static struct sensor_device_attribute_2 w83793_vid[] = { |
|
SENSOR_ATTR_2(cpu0_vid, S_IRUGO, show_vid, NULL, NOT_USED, 0), |
|
SENSOR_ATTR_2(cpu1_vid, S_IRUGO, show_vid, NULL, NOT_USED, 1), |
|
}; |
|
static DEVICE_ATTR_RW(vrm); |
|
|
|
static struct sensor_device_attribute_2 sda_single_files[] = { |
|
SENSOR_ATTR_2(intrusion0_alarm, S_IWUSR | S_IRUGO, show_alarm_beep, |
|
store_chassis_clear, ALARM_STATUS, 30), |
|
SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable, |
|
store_beep_enable, NOT_USED, NOT_USED), |
|
SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup, |
|
store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED), |
|
SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup, |
|
store_sf_setup, SETUP_PWM_UPTIME, NOT_USED), |
|
SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup, |
|
store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED), |
|
SENSOR_ATTR_2(temp_critical, S_IWUSR | S_IRUGO, show_sf_setup, |
|
store_sf_setup, SETUP_TEMP_CRITICAL, NOT_USED), |
|
}; |
|
|
|
static void w83793_init_client(struct i2c_client *client) |
|
{ |
|
if (reset) |
|
w83793_write_value(client, W83793_REG_CONFIG, 0x80); |
|
|
|
/* Start monitoring */ |
|
w83793_write_value(client, W83793_REG_CONFIG, |
|
w83793_read_value(client, W83793_REG_CONFIG) | 0x01); |
|
} |
|
|
|
/* |
|
* Watchdog routines |
|
*/ |
|
|
|
static int watchdog_set_timeout(struct w83793_data *data, int timeout) |
|
{ |
|
unsigned int mtimeout; |
|
int ret; |
|
|
|
mtimeout = DIV_ROUND_UP(timeout, 60); |
|
|
|
if (mtimeout > 255) |
|
return -EINVAL; |
|
|
|
mutex_lock(&data->watchdog_lock); |
|
if (!data->client) { |
|
ret = -ENODEV; |
|
goto leave; |
|
} |
|
|
|
data->watchdog_timeout = mtimeout; |
|
|
|
/* Set Timeout value (in Minutes) */ |
|
w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT, |
|
data->watchdog_timeout); |
|
|
|
ret = mtimeout * 60; |
|
|
|
leave: |
|
mutex_unlock(&data->watchdog_lock); |
|
return ret; |
|
} |
|
|
|
static int watchdog_get_timeout(struct w83793_data *data) |
|
{ |
|
int timeout; |
|
|
|
mutex_lock(&data->watchdog_lock); |
|
timeout = data->watchdog_timeout * 60; |
|
mutex_unlock(&data->watchdog_lock); |
|
|
|
return timeout; |
|
} |
|
|
|
static int watchdog_trigger(struct w83793_data *data) |
|
{ |
|
int ret = 0; |
|
|
|
mutex_lock(&data->watchdog_lock); |
|
if (!data->client) { |
|
ret = -ENODEV; |
|
goto leave; |
|
} |
|
|
|
/* Set Timeout value (in Minutes) */ |
|
w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT, |
|
data->watchdog_timeout); |
|
|
|
leave: |
|
mutex_unlock(&data->watchdog_lock); |
|
return ret; |
|
} |
|
|
|
static int watchdog_enable(struct w83793_data *data) |
|
{ |
|
int ret = 0; |
|
|
|
mutex_lock(&data->watchdog_lock); |
|
if (!data->client) { |
|
ret = -ENODEV; |
|
goto leave; |
|
} |
|
|
|
/* Set initial timeout */ |
|
w83793_write_value(data->client, W83793_REG_WDT_TIMEOUT, |
|
data->watchdog_timeout); |
|
|
|
/* Enable Soft Watchdog */ |
|
w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0x55); |
|
|
|
leave: |
|
mutex_unlock(&data->watchdog_lock); |
|
return ret; |
|
} |
|
|
|
static int watchdog_disable(struct w83793_data *data) |
|
{ |
|
int ret = 0; |
|
|
|
mutex_lock(&data->watchdog_lock); |
|
if (!data->client) { |
|
ret = -ENODEV; |
|
goto leave; |
|
} |
|
|
|
/* Disable Soft Watchdog */ |
|
w83793_write_value(data->client, W83793_REG_WDT_LOCK, 0xAA); |
|
|
|
leave: |
|
mutex_unlock(&data->watchdog_lock); |
|
return ret; |
|
} |
|
|
|
static int watchdog_open(struct inode *inode, struct file *filp) |
|
{ |
|
struct w83793_data *pos, *data = NULL; |
|
int watchdog_is_open; |
|
|
|
/* |
|
* We get called from drivers/char/misc.c with misc_mtx hold, and we |
|
* call misc_register() from w83793_probe() with watchdog_data_mutex |
|
* hold, as misc_register() takes the misc_mtx lock, this is a possible |
|
* deadlock, so we use mutex_trylock here. |
|
*/ |
|
if (!mutex_trylock(&watchdog_data_mutex)) |
|
return -ERESTARTSYS; |
|
list_for_each_entry(pos, &watchdog_data_list, list) { |
|
if (pos->watchdog_miscdev.minor == iminor(inode)) { |
|
data = pos; |
|
break; |
|
} |
|
} |
|
|
|
/* Check, if device is already open */ |
|
watchdog_is_open = test_and_set_bit(0, &data->watchdog_is_open); |
|
|
|
/* |
|
* Increase data reference counter (if not already done). |
|
* Note we can never not have found data, so we don't check for this |
|
*/ |
|
if (!watchdog_is_open) |
|
kref_get(&data->kref); |
|
|
|
mutex_unlock(&watchdog_data_mutex); |
|
|
|
/* Check, if device is already open and possibly issue error */ |
|
if (watchdog_is_open) |
|
return -EBUSY; |
|
|
|
/* Enable Soft Watchdog */ |
|
watchdog_enable(data); |
|
|
|
/* Store pointer to data into filp's private data */ |
|
filp->private_data = data; |
|
|
|
return stream_open(inode, filp); |
|
} |
|
|
|
static int watchdog_close(struct inode *inode, struct file *filp) |
|
{ |
|
struct w83793_data *data = filp->private_data; |
|
|
|
if (data->watchdog_expect_close) { |
|
watchdog_disable(data); |
|
data->watchdog_expect_close = 0; |
|
} else { |
|
watchdog_trigger(data); |
|
dev_crit(&data->client->dev, |
|
"unexpected close, not stopping watchdog!\n"); |
|
} |
|
|
|
clear_bit(0, &data->watchdog_is_open); |
|
|
|
/* Decrease data reference counter */ |
|
mutex_lock(&watchdog_data_mutex); |
|
kref_put(&data->kref, w83793_release_resources); |
|
mutex_unlock(&watchdog_data_mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static ssize_t watchdog_write(struct file *filp, const char __user *buf, |
|
size_t count, loff_t *offset) |
|
{ |
|
ssize_t ret; |
|
struct w83793_data *data = filp->private_data; |
|
|
|
if (count) { |
|
if (!nowayout) { |
|
size_t i; |
|
|
|
/* Clear it in case it was set with a previous write */ |
|
data->watchdog_expect_close = 0; |
|
|
|
for (i = 0; i != count; i++) { |
|
char c; |
|
if (get_user(c, buf + i)) |
|
return -EFAULT; |
|
if (c == 'V') |
|
data->watchdog_expect_close = 1; |
|
} |
|
} |
|
ret = watchdog_trigger(data); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
return count; |
|
} |
|
|
|
static long watchdog_ioctl(struct file *filp, unsigned int cmd, |
|
unsigned long arg) |
|
{ |
|
struct watchdog_info ident = { |
|
.options = WDIOF_KEEPALIVEPING | |
|
WDIOF_SETTIMEOUT | |
|
WDIOF_CARDRESET, |
|
.identity = "w83793 watchdog" |
|
}; |
|
|
|
int val, ret = 0; |
|
struct w83793_data *data = filp->private_data; |
|
|
|
switch (cmd) { |
|
case WDIOC_GETSUPPORT: |
|
if (!nowayout) |
|
ident.options |= WDIOF_MAGICCLOSE; |
|
if (copy_to_user((void __user *)arg, &ident, sizeof(ident))) |
|
ret = -EFAULT; |
|
break; |
|
|
|
case WDIOC_GETSTATUS: |
|
val = data->watchdog_caused_reboot ? WDIOF_CARDRESET : 0; |
|
ret = put_user(val, (int __user *)arg); |
|
break; |
|
|
|
case WDIOC_GETBOOTSTATUS: |
|
ret = put_user(0, (int __user *)arg); |
|
break; |
|
|
|
case WDIOC_KEEPALIVE: |
|
ret = watchdog_trigger(data); |
|
break; |
|
|
|
case WDIOC_GETTIMEOUT: |
|
val = watchdog_get_timeout(data); |
|
ret = put_user(val, (int __user *)arg); |
|
break; |
|
|
|
case WDIOC_SETTIMEOUT: |
|
if (get_user(val, (int __user *)arg)) { |
|
ret = -EFAULT; |
|
break; |
|
} |
|
ret = watchdog_set_timeout(data, val); |
|
if (ret > 0) |
|
ret = put_user(ret, (int __user *)arg); |
|
break; |
|
|
|
case WDIOC_SETOPTIONS: |
|
if (get_user(val, (int __user *)arg)) { |
|
ret = -EFAULT; |
|
break; |
|
} |
|
|
|
if (val & WDIOS_DISABLECARD) |
|
ret = watchdog_disable(data); |
|
else if (val & WDIOS_ENABLECARD) |
|
ret = watchdog_enable(data); |
|
else |
|
ret = -EINVAL; |
|
|
|
break; |
|
default: |
|
ret = -ENOTTY; |
|
} |
|
return ret; |
|
} |
|
|
|
static const struct file_operations watchdog_fops = { |
|
.owner = THIS_MODULE, |
|
.llseek = no_llseek, |
|
.open = watchdog_open, |
|
.release = watchdog_close, |
|
.write = watchdog_write, |
|
.unlocked_ioctl = watchdog_ioctl, |
|
.compat_ioctl = compat_ptr_ioctl, |
|
}; |
|
|
|
/* |
|
* Notifier for system down |
|
*/ |
|
|
|
static int watchdog_notify_sys(struct notifier_block *this, unsigned long code, |
|
void *unused) |
|
{ |
|
struct w83793_data *data = NULL; |
|
|
|
if (code == SYS_DOWN || code == SYS_HALT) { |
|
|
|
/* Disable each registered watchdog */ |
|
mutex_lock(&watchdog_data_mutex); |
|
list_for_each_entry(data, &watchdog_data_list, list) { |
|
if (data->watchdog_miscdev.minor) |
|
watchdog_disable(data); |
|
} |
|
mutex_unlock(&watchdog_data_mutex); |
|
} |
|
|
|
return NOTIFY_DONE; |
|
} |
|
|
|
/* |
|
* The WDT needs to learn about soft shutdowns in order to |
|
* turn the timebomb registers off. |
|
*/ |
|
|
|
static struct notifier_block watchdog_notifier = { |
|
.notifier_call = watchdog_notify_sys, |
|
}; |
|
|
|
/* |
|
* Init / remove routines |
|
*/ |
|
|
|
static int w83793_remove(struct i2c_client *client) |
|
{ |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
struct device *dev = &client->dev; |
|
int i, tmp; |
|
|
|
/* Unregister the watchdog (if registered) */ |
|
if (data->watchdog_miscdev.minor) { |
|
misc_deregister(&data->watchdog_miscdev); |
|
|
|
if (data->watchdog_is_open) { |
|
dev_warn(&client->dev, |
|
"i2c client detached with watchdog open! " |
|
"Stopping watchdog.\n"); |
|
watchdog_disable(data); |
|
} |
|
|
|
mutex_lock(&watchdog_data_mutex); |
|
list_del(&data->list); |
|
mutex_unlock(&watchdog_data_mutex); |
|
|
|
/* Tell the watchdog code the client is gone */ |
|
mutex_lock(&data->watchdog_lock); |
|
data->client = NULL; |
|
mutex_unlock(&data->watchdog_lock); |
|
} |
|
|
|
/* Reset Configuration Register to Disable Watch Dog Registers */ |
|
tmp = w83793_read_value(client, W83793_REG_CONFIG); |
|
w83793_write_value(client, W83793_REG_CONFIG, tmp & ~0x04); |
|
|
|
unregister_reboot_notifier(&watchdog_notifier); |
|
|
|
hwmon_device_unregister(data->hwmon_dev); |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) |
|
device_remove_file(dev, |
|
&w83793_sensor_attr_2[i].dev_attr); |
|
|
|
for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) |
|
device_remove_file(dev, &sda_single_files[i].dev_attr); |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) |
|
device_remove_file(dev, &w83793_vid[i].dev_attr); |
|
device_remove_file(dev, &dev_attr_vrm); |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++) |
|
device_remove_file(dev, &w83793_left_fan[i].dev_attr); |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++) |
|
device_remove_file(dev, &w83793_left_pwm[i].dev_attr); |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_temp); i++) |
|
device_remove_file(dev, &w83793_temp[i].dev_attr); |
|
|
|
/* Decrease data reference counter */ |
|
mutex_lock(&watchdog_data_mutex); |
|
kref_put(&data->kref, w83793_release_resources); |
|
mutex_unlock(&watchdog_data_mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
w83793_detect_subclients(struct i2c_client *client) |
|
{ |
|
int i, id; |
|
int address = client->addr; |
|
u8 tmp; |
|
struct i2c_adapter *adapter = client->adapter; |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
|
|
id = i2c_adapter_id(adapter); |
|
if (force_subclients[0] == id && force_subclients[1] == address) { |
|
for (i = 2; i <= 3; i++) { |
|
if (force_subclients[i] < 0x48 |
|
|| force_subclients[i] > 0x4f) { |
|
dev_err(&client->dev, |
|
"invalid subclient " |
|
"address %d; must be 0x48-0x4f\n", |
|
force_subclients[i]); |
|
return -EINVAL; |
|
} |
|
} |
|
w83793_write_value(client, W83793_REG_I2C_SUBADDR, |
|
(force_subclients[2] & 0x07) | |
|
((force_subclients[3] & 0x07) << 4)); |
|
} |
|
|
|
tmp = w83793_read_value(client, W83793_REG_I2C_SUBADDR); |
|
if (!(tmp & 0x08)) |
|
data->lm75[0] = devm_i2c_new_dummy_device(&client->dev, adapter, |
|
0x48 + (tmp & 0x7)); |
|
if (!(tmp & 0x80)) { |
|
if (!IS_ERR(data->lm75[0]) |
|
&& ((tmp & 0x7) == ((tmp >> 4) & 0x7))) { |
|
dev_err(&client->dev, |
|
"duplicate addresses 0x%x, " |
|
"use force_subclients\n", data->lm75[0]->addr); |
|
return -ENODEV; |
|
} |
|
data->lm75[1] = devm_i2c_new_dummy_device(&client->dev, adapter, |
|
0x48 + ((tmp >> 4) & 0x7)); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */ |
|
static int w83793_detect(struct i2c_client *client, |
|
struct i2c_board_info *info) |
|
{ |
|
u8 tmp, bank, chip_id; |
|
struct i2c_adapter *adapter = client->adapter; |
|
unsigned short address = client->addr; |
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
|
return -ENODEV; |
|
|
|
bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL); |
|
|
|
tmp = bank & 0x80 ? 0x5c : 0xa3; |
|
/* Check Winbond vendor ID */ |
|
if (tmp != i2c_smbus_read_byte_data(client, W83793_REG_VENDORID)) { |
|
pr_debug("w83793: Detection failed at check vendor id\n"); |
|
return -ENODEV; |
|
} |
|
|
|
/* |
|
* If Winbond chip, address of chip and W83793_REG_I2C_ADDR |
|
* should match |
|
*/ |
|
if ((bank & 0x07) == 0 |
|
&& i2c_smbus_read_byte_data(client, W83793_REG_I2C_ADDR) != |
|
(address << 1)) { |
|
pr_debug("w83793: Detection failed at check i2c addr\n"); |
|
return -ENODEV; |
|
} |
|
|
|
/* Determine the chip type now */ |
|
chip_id = i2c_smbus_read_byte_data(client, W83793_REG_CHIPID); |
|
if (chip_id != 0x7b) |
|
return -ENODEV; |
|
|
|
strlcpy(info->type, "w83793", I2C_NAME_SIZE); |
|
|
|
return 0; |
|
} |
|
|
|
static int w83793_probe(struct i2c_client *client) |
|
{ |
|
struct device *dev = &client->dev; |
|
static const int watchdog_minors[] = { |
|
WATCHDOG_MINOR, 212, 213, 214, 215 |
|
}; |
|
struct w83793_data *data; |
|
int i, tmp, val, err; |
|
int files_fan = ARRAY_SIZE(w83793_left_fan) / 7; |
|
int files_pwm = ARRAY_SIZE(w83793_left_pwm) / 5; |
|
int files_temp = ARRAY_SIZE(w83793_temp) / 6; |
|
|
|
data = kzalloc(sizeof(struct w83793_data), GFP_KERNEL); |
|
if (!data) { |
|
err = -ENOMEM; |
|
goto exit; |
|
} |
|
|
|
i2c_set_clientdata(client, data); |
|
data->bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL); |
|
mutex_init(&data->update_lock); |
|
mutex_init(&data->watchdog_lock); |
|
INIT_LIST_HEAD(&data->list); |
|
kref_init(&data->kref); |
|
|
|
/* |
|
* Store client pointer in our data struct for watchdog usage |
|
* (where the client is found through a data ptr instead of the |
|
* otherway around) |
|
*/ |
|
data->client = client; |
|
|
|
err = w83793_detect_subclients(client); |
|
if (err) |
|
goto free_mem; |
|
|
|
/* Initialize the chip */ |
|
w83793_init_client(client); |
|
|
|
/* |
|
* Only fan 1-5 has their own input pins, |
|
* Pwm 1-3 has their own pins |
|
*/ |
|
data->has_fan = 0x1f; |
|
data->has_pwm = 0x07; |
|
tmp = w83793_read_value(client, W83793_REG_MFC); |
|
val = w83793_read_value(client, W83793_REG_FANIN_CTRL); |
|
|
|
/* check the function of pins 49-56 */ |
|
if (tmp & 0x80) { |
|
data->has_vid |= 0x2; /* has VIDB */ |
|
} else { |
|
data->has_pwm |= 0x18; /* pwm 4,5 */ |
|
if (val & 0x01) { /* fan 6 */ |
|
data->has_fan |= 0x20; |
|
data->has_pwm |= 0x20; |
|
} |
|
if (val & 0x02) { /* fan 7 */ |
|
data->has_fan |= 0x40; |
|
data->has_pwm |= 0x40; |
|
} |
|
if (!(tmp & 0x40) && (val & 0x04)) { /* fan 8 */ |
|
data->has_fan |= 0x80; |
|
data->has_pwm |= 0x80; |
|
} |
|
} |
|
|
|
/* check the function of pins 37-40 */ |
|
if (!(tmp & 0x29)) |
|
data->has_vid |= 0x1; /* has VIDA */ |
|
if (0x08 == (tmp & 0x0c)) { |
|
if (val & 0x08) /* fan 9 */ |
|
data->has_fan |= 0x100; |
|
if (val & 0x10) /* fan 10 */ |
|
data->has_fan |= 0x200; |
|
} |
|
if (0x20 == (tmp & 0x30)) { |
|
if (val & 0x20) /* fan 11 */ |
|
data->has_fan |= 0x400; |
|
if (val & 0x40) /* fan 12 */ |
|
data->has_fan |= 0x800; |
|
} |
|
|
|
if ((tmp & 0x01) && (val & 0x04)) { /* fan 8, second location */ |
|
data->has_fan |= 0x80; |
|
data->has_pwm |= 0x80; |
|
} |
|
|
|
tmp = w83793_read_value(client, W83793_REG_FANIN_SEL); |
|
if ((tmp & 0x01) && (val & 0x08)) { /* fan 9, second location */ |
|
data->has_fan |= 0x100; |
|
} |
|
if ((tmp & 0x02) && (val & 0x10)) { /* fan 10, second location */ |
|
data->has_fan |= 0x200; |
|
} |
|
if ((tmp & 0x04) && (val & 0x20)) { /* fan 11, second location */ |
|
data->has_fan |= 0x400; |
|
} |
|
if ((tmp & 0x08) && (val & 0x40)) { /* fan 12, second location */ |
|
data->has_fan |= 0x800; |
|
} |
|
|
|
/* check the temp1-6 mode, ignore former AMDSI selected inputs */ |
|
tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[0]); |
|
if (tmp & 0x01) |
|
data->has_temp |= 0x01; |
|
if (tmp & 0x04) |
|
data->has_temp |= 0x02; |
|
if (tmp & 0x10) |
|
data->has_temp |= 0x04; |
|
if (tmp & 0x40) |
|
data->has_temp |= 0x08; |
|
|
|
tmp = w83793_read_value(client, W83793_REG_TEMP_MODE[1]); |
|
if (tmp & 0x01) |
|
data->has_temp |= 0x10; |
|
if (tmp & 0x02) |
|
data->has_temp |= 0x20; |
|
|
|
/* Register sysfs hooks */ |
|
for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) { |
|
err = device_create_file(dev, |
|
&w83793_sensor_attr_2[i].dev_attr); |
|
if (err) |
|
goto exit_remove; |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) { |
|
if (!(data->has_vid & (1 << i))) |
|
continue; |
|
err = device_create_file(dev, &w83793_vid[i].dev_attr); |
|
if (err) |
|
goto exit_remove; |
|
} |
|
if (data->has_vid) { |
|
data->vrm = vid_which_vrm(); |
|
err = device_create_file(dev, &dev_attr_vrm); |
|
if (err) |
|
goto exit_remove; |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) { |
|
err = device_create_file(dev, &sda_single_files[i].dev_attr); |
|
if (err) |
|
goto exit_remove; |
|
|
|
} |
|
|
|
for (i = 0; i < 6; i++) { |
|
int j; |
|
if (!(data->has_temp & (1 << i))) |
|
continue; |
|
for (j = 0; j < files_temp; j++) { |
|
err = device_create_file(dev, |
|
&w83793_temp[(i) * files_temp |
|
+ j].dev_attr); |
|
if (err) |
|
goto exit_remove; |
|
} |
|
} |
|
|
|
for (i = 5; i < 12; i++) { |
|
int j; |
|
if (!(data->has_fan & (1 << i))) |
|
continue; |
|
for (j = 0; j < files_fan; j++) { |
|
err = device_create_file(dev, |
|
&w83793_left_fan[(i - 5) * files_fan |
|
+ j].dev_attr); |
|
if (err) |
|
goto exit_remove; |
|
} |
|
} |
|
|
|
for (i = 3; i < 8; i++) { |
|
int j; |
|
if (!(data->has_pwm & (1 << i))) |
|
continue; |
|
for (j = 0; j < files_pwm; j++) { |
|
err = device_create_file(dev, |
|
&w83793_left_pwm[(i - 3) * files_pwm |
|
+ j].dev_attr); |
|
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; |
|
} |
|
|
|
/* Watchdog initialization */ |
|
|
|
/* Register boot notifier */ |
|
err = register_reboot_notifier(&watchdog_notifier); |
|
if (err != 0) { |
|
dev_err(&client->dev, |
|
"cannot register reboot notifier (err=%d)\n", err); |
|
goto exit_devunreg; |
|
} |
|
|
|
/* |
|
* Enable Watchdog registers. |
|
* Set Configuration Register to Enable Watch Dog Registers |
|
* (Bit 2) = XXXX, X1XX. |
|
*/ |
|
tmp = w83793_read_value(client, W83793_REG_CONFIG); |
|
w83793_write_value(client, W83793_REG_CONFIG, tmp | 0x04); |
|
|
|
/* Set the default watchdog timeout */ |
|
data->watchdog_timeout = timeout; |
|
|
|
/* Check, if last reboot was caused by watchdog */ |
|
data->watchdog_caused_reboot = |
|
w83793_read_value(data->client, W83793_REG_WDT_STATUS) & 0x01; |
|
|
|
/* Disable Soft Watchdog during initialiation */ |
|
watchdog_disable(data); |
|
|
|
/* |
|
* We take the data_mutex lock early so that watchdog_open() cannot |
|
* run when misc_register() has completed, but we've not yet added |
|
* our data to the watchdog_data_list (and set the default timeout) |
|
*/ |
|
mutex_lock(&watchdog_data_mutex); |
|
for (i = 0; i < ARRAY_SIZE(watchdog_minors); i++) { |
|
/* Register our watchdog part */ |
|
snprintf(data->watchdog_name, sizeof(data->watchdog_name), |
|
"watchdog%c", (i == 0) ? '\0' : ('0' + i)); |
|
data->watchdog_miscdev.name = data->watchdog_name; |
|
data->watchdog_miscdev.fops = &watchdog_fops; |
|
data->watchdog_miscdev.minor = watchdog_minors[i]; |
|
|
|
err = misc_register(&data->watchdog_miscdev); |
|
if (err == -EBUSY) |
|
continue; |
|
if (err) { |
|
data->watchdog_miscdev.minor = 0; |
|
dev_err(&client->dev, |
|
"Registering watchdog chardev: %d\n", err); |
|
break; |
|
} |
|
|
|
list_add(&data->list, &watchdog_data_list); |
|
|
|
dev_info(&client->dev, |
|
"Registered watchdog chardev major 10, minor: %d\n", |
|
watchdog_minors[i]); |
|
break; |
|
} |
|
if (i == ARRAY_SIZE(watchdog_minors)) { |
|
data->watchdog_miscdev.minor = 0; |
|
dev_warn(&client->dev, |
|
"Couldn't register watchdog chardev (due to no free minor)\n"); |
|
} |
|
|
|
mutex_unlock(&watchdog_data_mutex); |
|
|
|
return 0; |
|
|
|
/* Unregister hwmon device */ |
|
|
|
exit_devunreg: |
|
|
|
hwmon_device_unregister(data->hwmon_dev); |
|
|
|
/* Unregister sysfs hooks */ |
|
|
|
exit_remove: |
|
for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) |
|
device_remove_file(dev, &w83793_sensor_attr_2[i].dev_attr); |
|
|
|
for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) |
|
device_remove_file(dev, &sda_single_files[i].dev_attr); |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) |
|
device_remove_file(dev, &w83793_vid[i].dev_attr); |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++) |
|
device_remove_file(dev, &w83793_left_fan[i].dev_attr); |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++) |
|
device_remove_file(dev, &w83793_left_pwm[i].dev_attr); |
|
|
|
for (i = 0; i < ARRAY_SIZE(w83793_temp); i++) |
|
device_remove_file(dev, &w83793_temp[i].dev_attr); |
|
free_mem: |
|
kfree(data); |
|
exit: |
|
return err; |
|
} |
|
|
|
static void w83793_update_nonvolatile(struct device *dev) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
int i, j; |
|
/* |
|
* They are somewhat "stable" registers, and to update them every time |
|
* takes so much time, it's just not worthy. Update them in a long |
|
* interval to avoid exception. |
|
*/ |
|
if (!(time_after(jiffies, data->last_nonvolatile + HZ * 300) |
|
|| !data->valid)) |
|
return; |
|
/* update voltage limits */ |
|
for (i = 1; i < 3; i++) { |
|
for (j = 0; j < ARRAY_SIZE(data->in); j++) { |
|
data->in[j][i] = |
|
w83793_read_value(client, W83793_REG_IN[j][i]); |
|
} |
|
data->in_low_bits[i] = |
|
w83793_read_value(client, W83793_REG_IN_LOW_BITS[i]); |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) { |
|
/* Update the Fan measured value and limits */ |
|
if (!(data->has_fan & (1 << i))) |
|
continue; |
|
data->fan_min[i] = |
|
w83793_read_value(client, W83793_REG_FAN_MIN(i)) << 8; |
|
data->fan_min[i] |= |
|
w83793_read_value(client, W83793_REG_FAN_MIN(i) + 1); |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->temp_fan_map); i++) { |
|
if (!(data->has_temp & (1 << i))) |
|
continue; |
|
data->temp_fan_map[i] = |
|
w83793_read_value(client, W83793_REG_TEMP_FAN_MAP(i)); |
|
for (j = 1; j < 5; j++) { |
|
data->temp[i][j] = |
|
w83793_read_value(client, W83793_REG_TEMP[i][j]); |
|
} |
|
data->temp_cruise[i] = |
|
w83793_read_value(client, W83793_REG_TEMP_CRUISE(i)); |
|
for (j = 0; j < 7; j++) { |
|
data->sf2_pwm[i][j] = |
|
w83793_read_value(client, W83793_REG_SF2_PWM(i, j)); |
|
data->sf2_temp[i][j] = |
|
w83793_read_value(client, |
|
W83793_REG_SF2_TEMP(i, j)); |
|
} |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->temp_mode); i++) |
|
data->temp_mode[i] = |
|
w83793_read_value(client, W83793_REG_TEMP_MODE[i]); |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->tolerance); i++) { |
|
data->tolerance[i] = |
|
w83793_read_value(client, W83793_REG_TEMP_TOL(i)); |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->pwm); i++) { |
|
if (!(data->has_pwm & (1 << i))) |
|
continue; |
|
data->pwm[i][PWM_NONSTOP] = |
|
w83793_read_value(client, W83793_REG_PWM(i, PWM_NONSTOP)); |
|
data->pwm[i][PWM_START] = |
|
w83793_read_value(client, W83793_REG_PWM(i, PWM_START)); |
|
data->pwm_stop_time[i] = |
|
w83793_read_value(client, W83793_REG_PWM_STOP_TIME(i)); |
|
} |
|
|
|
data->pwm_default = w83793_read_value(client, W83793_REG_PWM_DEFAULT); |
|
data->pwm_enable = w83793_read_value(client, W83793_REG_PWM_ENABLE); |
|
data->pwm_uptime = w83793_read_value(client, W83793_REG_PWM_UPTIME); |
|
data->pwm_downtime = w83793_read_value(client, W83793_REG_PWM_DOWNTIME); |
|
data->temp_critical = |
|
w83793_read_value(client, W83793_REG_TEMP_CRITICAL); |
|
data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP); |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->beeps); i++) |
|
data->beeps[i] = w83793_read_value(client, W83793_REG_BEEP(i)); |
|
|
|
data->last_nonvolatile = jiffies; |
|
} |
|
|
|
static struct w83793_data *w83793_update_device(struct device *dev) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
int i; |
|
|
|
mutex_lock(&data->update_lock); |
|
|
|
if (!(time_after(jiffies, data->last_updated + HZ * 2) |
|
|| !data->valid)) |
|
goto END; |
|
|
|
/* Update the voltages measured value and limits */ |
|
for (i = 0; i < ARRAY_SIZE(data->in); i++) |
|
data->in[i][IN_READ] = |
|
w83793_read_value(client, W83793_REG_IN[i][IN_READ]); |
|
|
|
data->in_low_bits[IN_READ] = |
|
w83793_read_value(client, W83793_REG_IN_LOW_BITS[IN_READ]); |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->fan); i++) { |
|
if (!(data->has_fan & (1 << i))) |
|
continue; |
|
data->fan[i] = |
|
w83793_read_value(client, W83793_REG_FAN(i)) << 8; |
|
data->fan[i] |= |
|
w83793_read_value(client, W83793_REG_FAN(i) + 1); |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->temp); i++) { |
|
if (!(data->has_temp & (1 << i))) |
|
continue; |
|
data->temp[i][TEMP_READ] = |
|
w83793_read_value(client, W83793_REG_TEMP[i][TEMP_READ]); |
|
} |
|
|
|
data->temp_low_bits = |
|
w83793_read_value(client, W83793_REG_TEMP_LOW_BITS); |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->pwm); i++) { |
|
if (data->has_pwm & (1 << i)) |
|
data->pwm[i][PWM_DUTY] = |
|
w83793_read_value(client, |
|
W83793_REG_PWM(i, PWM_DUTY)); |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(data->alarms); i++) |
|
data->alarms[i] = |
|
w83793_read_value(client, W83793_REG_ALARM(i)); |
|
if (data->has_vid & 0x01) |
|
data->vid[0] = w83793_read_value(client, W83793_REG_VID_INA); |
|
if (data->has_vid & 0x02) |
|
data->vid[1] = w83793_read_value(client, W83793_REG_VID_INB); |
|
w83793_update_nonvolatile(dev); |
|
data->last_updated = jiffies; |
|
data->valid = 1; |
|
|
|
END: |
|
mutex_unlock(&data->update_lock); |
|
return data; |
|
} |
|
|
|
/* |
|
* Ignore the possibility that somebody change bank outside the driver |
|
* Must be called with data->update_lock held, except during initialization |
|
*/ |
|
static u8 w83793_read_value(struct i2c_client *client, u16 reg) |
|
{ |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
u8 res; |
|
u8 new_bank = reg >> 8; |
|
|
|
new_bank |= data->bank & 0xfc; |
|
if (data->bank != new_bank) { |
|
if (i2c_smbus_write_byte_data |
|
(client, W83793_REG_BANKSEL, new_bank) >= 0) |
|
data->bank = new_bank; |
|
else { |
|
dev_err(&client->dev, |
|
"set bank to %d failed, fall back " |
|
"to bank %d, read reg 0x%x error\n", |
|
new_bank, data->bank, reg); |
|
res = 0x0; /* read 0x0 from the chip */ |
|
goto END; |
|
} |
|
} |
|
res = i2c_smbus_read_byte_data(client, reg & 0xff); |
|
END: |
|
return res; |
|
} |
|
|
|
/* Must be called with data->update_lock held, except during initialization */ |
|
static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value) |
|
{ |
|
struct w83793_data *data = i2c_get_clientdata(client); |
|
int res; |
|
u8 new_bank = reg >> 8; |
|
|
|
new_bank |= data->bank & 0xfc; |
|
if (data->bank != new_bank) { |
|
res = i2c_smbus_write_byte_data(client, W83793_REG_BANKSEL, |
|
new_bank); |
|
if (res < 0) { |
|
dev_err(&client->dev, |
|
"set bank to %d failed, fall back " |
|
"to bank %d, write reg 0x%x error\n", |
|
new_bank, data->bank, reg); |
|
goto END; |
|
} |
|
data->bank = new_bank; |
|
} |
|
|
|
res = i2c_smbus_write_byte_data(client, reg & 0xff, value); |
|
END: |
|
return res; |
|
} |
|
|
|
module_i2c_driver(w83793_driver); |
|
|
|
MODULE_AUTHOR("Yuan Mu, Sven Anders"); |
|
MODULE_DESCRIPTION("w83793 driver"); |
|
MODULE_LICENSE("GPL");
|
|
|