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2086 lines
56 KiB
2086 lines
56 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* w83781d.c - Part of lm_sensors, Linux kernel modules for hardware |
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* monitoring |
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* Copyright (c) 1998 - 2001 Frodo Looijaard <[email protected]>, |
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* Philip Edelbrock <[email protected]>, |
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* and Mark Studebaker <[email protected]> |
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* Copyright (c) 2007 - 2008 Jean Delvare <[email protected]> |
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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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* as99127f 7 3 0 3 0x31 0x12c3 yes no |
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* as99127f rev.2 (type_name = as99127f) 0x31 0x5ca3 yes no |
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* w83781d 7 3 0 3 0x10-1 0x5ca3 yes yes |
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* w83782d 9 3 2-4 3 0x30 0x5ca3 yes yes |
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* w83783s 5-6 3 2 1-2 0x40 0x5ca3 yes no |
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* |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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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/jiffies.h> |
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#include <linux/i2c.h> |
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#include <linux/hwmon.h> |
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#include <linux/hwmon-vid.h> |
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#include <linux/hwmon-sysfs.h> |
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#include <linux/sysfs.h> |
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#include <linux/err.h> |
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#include <linux/mutex.h> |
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#ifdef CONFIG_ISA |
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#include <linux/platform_device.h> |
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#include <linux/ioport.h> |
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#include <linux/io.h> |
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#endif |
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#include "lm75.h" |
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/* Addresses to scan */ |
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static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, |
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0x2e, 0x2f, I2C_CLIENT_END }; |
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enum chips { w83781d, w83782d, w83783s, as99127f }; |
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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 one to reset chip on load"); |
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static bool init = 1; |
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module_param(init, bool, 0); |
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MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization"); |
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/* Constants specified below */ |
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/* Length of ISA address segment */ |
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#define W83781D_EXTENT 8 |
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/* Where are the ISA address/data registers relative to the base address */ |
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#define W83781D_ADDR_REG_OFFSET 5 |
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#define W83781D_DATA_REG_OFFSET 6 |
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|
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/* The device registers */ |
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/* in nr from 0 to 8 */ |
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#define W83781D_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \ |
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(0x554 + (((nr) - 7) * 2))) |
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#define W83781D_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \ |
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(0x555 + (((nr) - 7) * 2))) |
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#define W83781D_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \ |
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(0x550 + (nr) - 7)) |
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|
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/* fan nr from 0 to 2 */ |
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#define W83781D_REG_FAN_MIN(nr) (0x3b + (nr)) |
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#define W83781D_REG_FAN(nr) (0x28 + (nr)) |
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#define W83781D_REG_BANK 0x4E |
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#define W83781D_REG_TEMP2_CONFIG 0x152 |
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#define W83781D_REG_TEMP3_CONFIG 0x252 |
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/* temp nr from 1 to 3 */ |
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#define W83781D_REG_TEMP(nr) ((nr == 3) ? (0x0250) : \ |
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((nr == 2) ? (0x0150) : \ |
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(0x27))) |
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#define W83781D_REG_TEMP_HYST(nr) ((nr == 3) ? (0x253) : \ |
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((nr == 2) ? (0x153) : \ |
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(0x3A))) |
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#define W83781D_REG_TEMP_OVER(nr) ((nr == 3) ? (0x255) : \ |
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((nr == 2) ? (0x155) : \ |
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(0x39))) |
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#define W83781D_REG_CONFIG 0x40 |
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|
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/* Interrupt status (W83781D, AS99127F) */ |
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#define W83781D_REG_ALARM1 0x41 |
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#define W83781D_REG_ALARM2 0x42 |
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|
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/* Real-time status (W83782D, W83783S) */ |
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#define W83782D_REG_ALARM1 0x459 |
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#define W83782D_REG_ALARM2 0x45A |
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#define W83782D_REG_ALARM3 0x45B |
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#define W83781D_REG_BEEP_CONFIG 0x4D |
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#define W83781D_REG_BEEP_INTS1 0x56 |
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#define W83781D_REG_BEEP_INTS2 0x57 |
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#define W83781D_REG_BEEP_INTS3 0x453 /* not on W83781D */ |
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#define W83781D_REG_VID_FANDIV 0x47 |
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#define W83781D_REG_CHIPID 0x49 |
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#define W83781D_REG_WCHIPID 0x58 |
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#define W83781D_REG_CHIPMAN 0x4F |
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#define W83781D_REG_PIN 0x4B |
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|
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/* 782D/783S only */ |
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#define W83781D_REG_VBAT 0x5D |
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|
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/* PWM 782D (1-4) and 783S (1-2) only */ |
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static const u8 W83781D_REG_PWM[] = { 0x5B, 0x5A, 0x5E, 0x5F }; |
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#define W83781D_REG_PWMCLK12 0x5C |
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#define W83781D_REG_PWMCLK34 0x45C |
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#define W83781D_REG_I2C_ADDR 0x48 |
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#define W83781D_REG_I2C_SUBADDR 0x4A |
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/* |
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* The following are undocumented in the data sheets however we |
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* received the information in an email from Winbond tech support |
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*/ |
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/* Sensor selection - not on 781d */ |
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#define W83781D_REG_SCFG1 0x5D |
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static const u8 BIT_SCFG1[] = { 0x02, 0x04, 0x08 }; |
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#define W83781D_REG_SCFG2 0x59 |
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static const u8 BIT_SCFG2[] = { 0x10, 0x20, 0x40 }; |
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#define W83781D_DEFAULT_BETA 3435 |
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/* Conversions */ |
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#define IN_TO_REG(val) clamp_val(((val) + 8) / 16, 0, 255) |
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#define IN_FROM_REG(val) ((val) * 16) |
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static inline u8 |
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FAN_TO_REG(long rpm, int div) |
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{ |
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if (rpm == 0) |
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return 255; |
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rpm = clamp_val(rpm, 1, 1000000); |
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return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); |
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} |
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static inline long |
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FAN_FROM_REG(u8 val, int div) |
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{ |
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if (val == 0) |
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return -1; |
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if (val == 255) |
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return 0; |
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return 1350000 / (val * div); |
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} |
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#define TEMP_TO_REG(val) clamp_val((val) / 1000, -127, 128) |
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#define TEMP_FROM_REG(val) ((val) * 1000) |
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#define BEEP_MASK_FROM_REG(val, type) ((type) == as99127f ? \ |
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(~(val)) & 0x7fff : (val) & 0xff7fff) |
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#define BEEP_MASK_TO_REG(val, type) ((type) == as99127f ? \ |
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(~(val)) & 0x7fff : (val) & 0xff7fff) |
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#define DIV_FROM_REG(val) (1 << (val)) |
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static inline u8 |
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DIV_TO_REG(long val, enum chips type) |
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{ |
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int i; |
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val = clamp_val(val, 1, |
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((type == w83781d || type == as99127f) ? 8 : 128)) >> 1; |
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for (i = 0; i < 7; i++) { |
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if (val == 0) |
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break; |
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val >>= 1; |
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} |
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return i; |
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} |
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struct w83781d_data { |
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struct i2c_client *client; |
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struct device *hwmon_dev; |
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struct mutex lock; |
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enum chips type; |
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|
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/* For ISA device only */ |
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const char *name; |
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int isa_addr; |
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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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struct i2c_client *lm75[2]; /* for secondary I2C addresses */ |
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/* array of 2 pointers to subclients */ |
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u8 in[9]; /* Register value - 8 & 9 for 782D only */ |
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u8 in_max[9]; /* Register value - 8 & 9 for 782D only */ |
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u8 in_min[9]; /* Register value - 8 & 9 for 782D only */ |
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u8 fan[3]; /* Register value */ |
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u8 fan_min[3]; /* Register value */ |
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s8 temp; /* Register value */ |
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s8 temp_max; /* Register value */ |
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s8 temp_max_hyst; /* Register value */ |
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u16 temp_add[2]; /* Register value */ |
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u16 temp_max_add[2]; /* Register value */ |
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u16 temp_max_hyst_add[2]; /* Register value */ |
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u8 fan_div[3]; /* Register encoding, shifted right */ |
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u8 vid; /* Register encoding, combined */ |
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u32 alarms; /* Register encoding, combined */ |
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u32 beep_mask; /* Register encoding, combined */ |
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u8 pwm[4]; /* Register value */ |
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u8 pwm2_enable; /* Boolean */ |
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u16 sens[3]; /* |
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* 782D/783S only. |
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* 1 = pentium diode; 2 = 3904 diode; |
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* 4 = thermistor |
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*/ |
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u8 vrm; |
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}; |
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static struct w83781d_data *w83781d_data_if_isa(void); |
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static int w83781d_alias_detect(struct i2c_client *client, u8 chipid); |
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static int w83781d_read_value(struct w83781d_data *data, u16 reg); |
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static int w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value); |
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static struct w83781d_data *w83781d_update_device(struct device *dev); |
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static void w83781d_init_device(struct device *dev); |
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/* following are the sysfs callback functions */ |
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#define show_in_reg(reg) \ |
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static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \ |
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char *buf) \ |
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{ \ |
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
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struct w83781d_data *data = w83781d_update_device(dev); \ |
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return sprintf(buf, "%ld\n", \ |
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(long)IN_FROM_REG(data->reg[attr->index])); \ |
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} |
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show_in_reg(in); |
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show_in_reg(in_min); |
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show_in_reg(in_max); |
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#define store_in_reg(REG, reg) \ |
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static ssize_t store_in_##reg(struct device *dev, struct device_attribute \ |
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*da, const char *buf, size_t count) \ |
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{ \ |
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
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struct w83781d_data *data = dev_get_drvdata(dev); \ |
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int nr = attr->index; \ |
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unsigned long val; \ |
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int err = kstrtoul(buf, 10, &val); \ |
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if (err) \ |
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return err; \ |
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mutex_lock(&data->update_lock); \ |
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data->in_##reg[nr] = IN_TO_REG(val); \ |
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w83781d_write_value(data, W83781D_REG_IN_##REG(nr), \ |
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data->in_##reg[nr]); \ |
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\ |
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mutex_unlock(&data->update_lock); \ |
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return count; \ |
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} |
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store_in_reg(MIN, min); |
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store_in_reg(MAX, max); |
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#define sysfs_in_offsets(offset) \ |
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static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
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show_in, NULL, offset); \ |
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static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
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show_in_min, store_in_min, offset); \ |
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static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ |
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show_in_max, store_in_max, offset) |
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sysfs_in_offsets(0); |
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sysfs_in_offsets(1); |
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sysfs_in_offsets(2); |
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sysfs_in_offsets(3); |
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sysfs_in_offsets(4); |
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sysfs_in_offsets(5); |
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sysfs_in_offsets(6); |
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sysfs_in_offsets(7); |
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sysfs_in_offsets(8); |
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#define show_fan_reg(reg) \ |
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static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \ |
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char *buf) \ |
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{ \ |
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
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struct w83781d_data *data = w83781d_update_device(dev); \ |
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return sprintf(buf, "%ld\n", \ |
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FAN_FROM_REG(data->reg[attr->index], \ |
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DIV_FROM_REG(data->fan_div[attr->index]))); \ |
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} |
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show_fan_reg(fan); |
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show_fan_reg(fan_min); |
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static ssize_t |
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store_fan_min(struct device *dev, struct device_attribute *da, |
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const char *buf, size_t count) |
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{ |
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
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struct w83781d_data *data = dev_get_drvdata(dev); |
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int nr = attr->index; |
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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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mutex_lock(&data->update_lock); |
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data->fan_min[nr] = |
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FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
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w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), |
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data->fan_min[nr]); |
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mutex_unlock(&data->update_lock); |
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return count; |
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} |
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static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); |
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static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO | S_IWUSR, |
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show_fan_min, store_fan_min, 0); |
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static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); |
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static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO | S_IWUSR, |
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show_fan_min, store_fan_min, 1); |
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static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); |
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static SENSOR_DEVICE_ATTR(fan3_min, S_IRUGO | S_IWUSR, |
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show_fan_min, store_fan_min, 2); |
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#define show_temp_reg(reg) \ |
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static ssize_t show_##reg(struct device *dev, struct device_attribute *da, \ |
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char *buf) \ |
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{ \ |
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
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struct w83781d_data *data = w83781d_update_device(dev); \ |
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int nr = attr->index; \ |
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if (nr >= 2) { /* TEMP2 and TEMP3 */ \ |
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return sprintf(buf, "%d\n", \ |
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LM75_TEMP_FROM_REG(data->reg##_add[nr-2])); \ |
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} else { /* TEMP1 */ \ |
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return sprintf(buf, "%ld\n", (long)TEMP_FROM_REG(data->reg)); \ |
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} \ |
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} |
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show_temp_reg(temp); |
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show_temp_reg(temp_max); |
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show_temp_reg(temp_max_hyst); |
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#define store_temp_reg(REG, reg) \ |
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static ssize_t store_temp_##reg(struct device *dev, \ |
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struct device_attribute *da, const char *buf, size_t count) \ |
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{ \ |
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struct sensor_device_attribute *attr = to_sensor_dev_attr(da); \ |
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struct w83781d_data *data = dev_get_drvdata(dev); \ |
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int nr = attr->index; \ |
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long val; \ |
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int err = kstrtol(buf, 10, &val); \ |
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if (err) \ |
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return err; \ |
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mutex_lock(&data->update_lock); \ |
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\ |
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if (nr >= 2) { /* TEMP2 and TEMP3 */ \ |
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data->temp_##reg##_add[nr-2] = LM75_TEMP_TO_REG(val); \ |
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w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \ |
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data->temp_##reg##_add[nr-2]); \ |
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} else { /* TEMP1 */ \ |
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data->temp_##reg = TEMP_TO_REG(val); \ |
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w83781d_write_value(data, W83781D_REG_TEMP_##REG(nr), \ |
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data->temp_##reg); \ |
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} \ |
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\ |
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mutex_unlock(&data->update_lock); \ |
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return count; \ |
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} |
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store_temp_reg(OVER, max); |
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store_temp_reg(HYST, max_hyst); |
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|
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#define sysfs_temp_offsets(offset) \ |
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static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
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show_temp, NULL, offset); \ |
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static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ |
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show_temp_max, store_temp_max, offset); \ |
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static SENSOR_DEVICE_ATTR(temp##offset##_max_hyst, S_IRUGO | S_IWUSR, \ |
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show_temp_max_hyst, store_temp_max_hyst, offset); |
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sysfs_temp_offsets(1); |
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sysfs_temp_offsets(2); |
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sysfs_temp_offsets(3); |
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static ssize_t |
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cpu0_vid_show(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct w83781d_data *data = w83781d_update_device(dev); |
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return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); |
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} |
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static DEVICE_ATTR_RO(cpu0_vid); |
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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 w83781d_data *data = dev_get_drvdata(dev); |
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return sprintf(buf, "%ld\n", (long) 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, const char *buf, |
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size_t count) |
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{ |
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struct w83781d_data *data = dev_get_drvdata(dev); |
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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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data->vrm = clamp_val(val, 0, 255); |
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return count; |
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} |
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static DEVICE_ATTR_RW(vrm); |
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|
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static ssize_t |
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alarms_show(struct device *dev, struct device_attribute *attr, char *buf) |
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{ |
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struct w83781d_data *data = w83781d_update_device(dev); |
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return sprintf(buf, "%u\n", data->alarms); |
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} |
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static DEVICE_ATTR_RO(alarms); |
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static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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struct w83781d_data *data = w83781d_update_device(dev); |
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int bitnr = to_sensor_dev_attr(attr)->index; |
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return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); |
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} |
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|
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/* The W83781D has a single alarm bit for temp2 and temp3 */ |
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static ssize_t show_temp3_alarm(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct w83781d_data *data = w83781d_update_device(dev); |
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int bitnr = (data->type == w83781d) ? 5 : 13; |
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return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); |
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} |
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|
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static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); |
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static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); |
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static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); |
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static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); |
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static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); |
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static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); |
|
static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 10); |
|
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(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); |
|
static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); |
|
static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11); |
|
static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); |
|
static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); |
|
static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_temp3_alarm, NULL, 0); |
|
|
|
static ssize_t beep_mask_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct w83781d_data *data = w83781d_update_device(dev); |
|
return sprintf(buf, "%ld\n", |
|
(long)BEEP_MASK_FROM_REG(data->beep_mask, data->type)); |
|
} |
|
|
|
static ssize_t |
|
beep_mask_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct w83781d_data *data = dev_get_drvdata(dev); |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
data->beep_mask &= 0x8000; /* preserve beep enable */ |
|
data->beep_mask |= BEEP_MASK_TO_REG(val, data->type); |
|
w83781d_write_value(data, W83781D_REG_BEEP_INTS1, |
|
data->beep_mask & 0xff); |
|
w83781d_write_value(data, W83781D_REG_BEEP_INTS2, |
|
(data->beep_mask >> 8) & 0xff); |
|
if (data->type != w83781d && data->type != as99127f) { |
|
w83781d_write_value(data, W83781D_REG_BEEP_INTS3, |
|
((data->beep_mask) >> 16) & 0xff); |
|
} |
|
mutex_unlock(&data->update_lock); |
|
|
|
return count; |
|
} |
|
|
|
static DEVICE_ATTR_RW(beep_mask); |
|
|
|
static ssize_t show_beep(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct w83781d_data *data = w83781d_update_device(dev); |
|
int bitnr = to_sensor_dev_attr(attr)->index; |
|
return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); |
|
} |
|
|
|
static ssize_t |
|
store_beep(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct w83781d_data *data = dev_get_drvdata(dev); |
|
int bitnr = to_sensor_dev_attr(attr)->index; |
|
u8 reg; |
|
unsigned long bit; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &bit); |
|
if (err) |
|
return err; |
|
|
|
if (bit & ~1) |
|
return -EINVAL; |
|
|
|
mutex_lock(&data->update_lock); |
|
if (bit) |
|
data->beep_mask |= (1 << bitnr); |
|
else |
|
data->beep_mask &= ~(1 << bitnr); |
|
|
|
if (bitnr < 8) { |
|
reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS1); |
|
if (bit) |
|
reg |= (1 << bitnr); |
|
else |
|
reg &= ~(1 << bitnr); |
|
w83781d_write_value(data, W83781D_REG_BEEP_INTS1, reg); |
|
} else if (bitnr < 16) { |
|
reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS2); |
|
if (bit) |
|
reg |= (1 << (bitnr - 8)); |
|
else |
|
reg &= ~(1 << (bitnr - 8)); |
|
w83781d_write_value(data, W83781D_REG_BEEP_INTS2, reg); |
|
} else { |
|
reg = w83781d_read_value(data, W83781D_REG_BEEP_INTS3); |
|
if (bit) |
|
reg |= (1 << (bitnr - 16)); |
|
else |
|
reg &= ~(1 << (bitnr - 16)); |
|
w83781d_write_value(data, W83781D_REG_BEEP_INTS3, reg); |
|
} |
|
mutex_unlock(&data->update_lock); |
|
|
|
return count; |
|
} |
|
|
|
/* The W83781D has a single beep bit for temp2 and temp3 */ |
|
static ssize_t show_temp3_beep(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
struct w83781d_data *data = w83781d_update_device(dev); |
|
int bitnr = (data->type == w83781d) ? 5 : 13; |
|
return sprintf(buf, "%u\n", (data->beep_mask >> bitnr) & 1); |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 0); |
|
static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 1); |
|
static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 2); |
|
static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 3); |
|
static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 8); |
|
static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 9); |
|
static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 10); |
|
static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 16); |
|
static SENSOR_DEVICE_ATTR(in8_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 17); |
|
static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 6); |
|
static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 7); |
|
static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 11); |
|
static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 4); |
|
static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 5); |
|
static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, |
|
show_temp3_beep, store_beep, 13); |
|
static SENSOR_DEVICE_ATTR(beep_enable, S_IRUGO | S_IWUSR, |
|
show_beep, store_beep, 15); |
|
|
|
static ssize_t |
|
show_fan_div(struct device *dev, struct device_attribute *da, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
|
struct w83781d_data *data = w83781d_update_device(dev); |
|
return sprintf(buf, "%ld\n", |
|
(long) DIV_FROM_REG(data->fan_div[attr->index])); |
|
} |
|
|
|
/* |
|
* Note: we save and restore the fan minimum here, because its value is |
|
* determined in part by the fan divisor. This follows the principle of |
|
* least surprise; the user doesn't expect the fan minimum to change just |
|
* because the divisor changed. |
|
*/ |
|
static ssize_t |
|
store_fan_div(struct device *dev, struct device_attribute *da, |
|
const char *buf, size_t count) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
|
struct w83781d_data *data = dev_get_drvdata(dev); |
|
unsigned long min; |
|
int nr = attr->index; |
|
u8 reg; |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
|
|
/* Save fan_min */ |
|
min = FAN_FROM_REG(data->fan_min[nr], |
|
DIV_FROM_REG(data->fan_div[nr])); |
|
|
|
data->fan_div[nr] = DIV_TO_REG(val, data->type); |
|
|
|
reg = (w83781d_read_value(data, nr == 2 ? |
|
W83781D_REG_PIN : W83781D_REG_VID_FANDIV) |
|
& (nr == 0 ? 0xcf : 0x3f)) |
|
| ((data->fan_div[nr] & 0x03) << (nr == 0 ? 4 : 6)); |
|
w83781d_write_value(data, nr == 2 ? |
|
W83781D_REG_PIN : W83781D_REG_VID_FANDIV, reg); |
|
|
|
/* w83781d and as99127f don't have extended divisor bits */ |
|
if (data->type != w83781d && data->type != as99127f) { |
|
reg = (w83781d_read_value(data, W83781D_REG_VBAT) |
|
& ~(1 << (5 + nr))) |
|
| ((data->fan_div[nr] & 0x04) << (3 + nr)); |
|
w83781d_write_value(data, W83781D_REG_VBAT, reg); |
|
} |
|
|
|
/* Restore fan_min */ |
|
data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); |
|
w83781d_write_value(data, W83781D_REG_FAN_MIN(nr), data->fan_min[nr]); |
|
|
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, |
|
show_fan_div, store_fan_div, 0); |
|
static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, |
|
show_fan_div, store_fan_div, 1); |
|
static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, |
|
show_fan_div, store_fan_div, 2); |
|
|
|
static ssize_t |
|
show_pwm(struct device *dev, struct device_attribute *da, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
|
struct w83781d_data *data = w83781d_update_device(dev); |
|
return sprintf(buf, "%d\n", (int)data->pwm[attr->index]); |
|
} |
|
|
|
static ssize_t |
|
pwm2_enable_show(struct device *dev, struct device_attribute *da, char *buf) |
|
{ |
|
struct w83781d_data *data = w83781d_update_device(dev); |
|
return sprintf(buf, "%d\n", (int)data->pwm2_enable); |
|
} |
|
|
|
static ssize_t |
|
store_pwm(struct device *dev, struct device_attribute *da, const char *buf, |
|
size_t count) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
|
struct w83781d_data *data = dev_get_drvdata(dev); |
|
int nr = attr->index; |
|
unsigned long val; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
data->pwm[nr] = clamp_val(val, 0, 255); |
|
w83781d_write_value(data, W83781D_REG_PWM[nr], data->pwm[nr]); |
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static ssize_t |
|
pwm2_enable_store(struct device *dev, struct device_attribute *da, |
|
const char *buf, size_t count) |
|
{ |
|
struct w83781d_data *data = dev_get_drvdata(dev); |
|
unsigned long val; |
|
u32 reg; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
|
|
switch (val) { |
|
case 0: |
|
case 1: |
|
reg = w83781d_read_value(data, W83781D_REG_PWMCLK12); |
|
w83781d_write_value(data, W83781D_REG_PWMCLK12, |
|
(reg & 0xf7) | (val << 3)); |
|
|
|
reg = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG); |
|
w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, |
|
(reg & 0xef) | (!val << 4)); |
|
|
|
data->pwm2_enable = val; |
|
break; |
|
|
|
default: |
|
mutex_unlock(&data->update_lock); |
|
return -EINVAL; |
|
} |
|
|
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0); |
|
static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 1); |
|
static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 2); |
|
static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 3); |
|
/* only PWM2 can be enabled/disabled */ |
|
static DEVICE_ATTR_RW(pwm2_enable); |
|
|
|
static ssize_t |
|
show_sensor(struct device *dev, struct device_attribute *da, char *buf) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
|
struct w83781d_data *data = w83781d_update_device(dev); |
|
return sprintf(buf, "%d\n", (int)data->sens[attr->index]); |
|
} |
|
|
|
static ssize_t |
|
store_sensor(struct device *dev, struct device_attribute *da, |
|
const char *buf, size_t count) |
|
{ |
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(da); |
|
struct w83781d_data *data = dev_get_drvdata(dev); |
|
int nr = attr->index; |
|
unsigned long val; |
|
u32 tmp; |
|
int err; |
|
|
|
err = kstrtoul(buf, 10, &val); |
|
if (err) |
|
return err; |
|
|
|
mutex_lock(&data->update_lock); |
|
|
|
switch (val) { |
|
case 1: /* PII/Celeron diode */ |
|
tmp = w83781d_read_value(data, W83781D_REG_SCFG1); |
|
w83781d_write_value(data, W83781D_REG_SCFG1, |
|
tmp | BIT_SCFG1[nr]); |
|
tmp = w83781d_read_value(data, W83781D_REG_SCFG2); |
|
w83781d_write_value(data, W83781D_REG_SCFG2, |
|
tmp | BIT_SCFG2[nr]); |
|
data->sens[nr] = val; |
|
break; |
|
case 2: /* 3904 */ |
|
tmp = w83781d_read_value(data, W83781D_REG_SCFG1); |
|
w83781d_write_value(data, W83781D_REG_SCFG1, |
|
tmp | BIT_SCFG1[nr]); |
|
tmp = w83781d_read_value(data, W83781D_REG_SCFG2); |
|
w83781d_write_value(data, W83781D_REG_SCFG2, |
|
tmp & ~BIT_SCFG2[nr]); |
|
data->sens[nr] = val; |
|
break; |
|
case W83781D_DEFAULT_BETA: |
|
dev_warn(dev, |
|
"Sensor type %d is deprecated, please use 4 instead\n", |
|
W83781D_DEFAULT_BETA); |
|
fallthrough; |
|
case 4: /* thermistor */ |
|
tmp = w83781d_read_value(data, W83781D_REG_SCFG1); |
|
w83781d_write_value(data, W83781D_REG_SCFG1, |
|
tmp & ~BIT_SCFG1[nr]); |
|
data->sens[nr] = val; |
|
break; |
|
default: |
|
dev_err(dev, "Invalid sensor type %ld; must be 1, 2, or 4\n", |
|
(long) val); |
|
break; |
|
} |
|
|
|
mutex_unlock(&data->update_lock); |
|
return count; |
|
} |
|
|
|
static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, |
|
show_sensor, store_sensor, 0); |
|
static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, |
|
show_sensor, store_sensor, 1); |
|
static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, |
|
show_sensor, store_sensor, 2); |
|
|
|
/* |
|
* Assumes that adapter is of I2C, not ISA variety. |
|
* OTHERWISE DON'T CALL THIS |
|
*/ |
|
static int |
|
w83781d_detect_subclients(struct i2c_client *new_client) |
|
{ |
|
int i, val1 = 0, id; |
|
int err; |
|
int address = new_client->addr; |
|
unsigned short sc_addr[2]; |
|
struct i2c_adapter *adapter = new_client->adapter; |
|
struct w83781d_data *data = i2c_get_clientdata(new_client); |
|
enum chips kind = data->type; |
|
int num_sc = 1; |
|
|
|
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(&new_client->dev, |
|
"Invalid subclient address %d; must be 0x48-0x4f\n", |
|
force_subclients[i]); |
|
err = -EINVAL; |
|
goto ERROR_SC_1; |
|
} |
|
} |
|
w83781d_write_value(data, W83781D_REG_I2C_SUBADDR, |
|
(force_subclients[2] & 0x07) | |
|
((force_subclients[3] & 0x07) << 4)); |
|
sc_addr[0] = force_subclients[2]; |
|
} else { |
|
val1 = w83781d_read_value(data, W83781D_REG_I2C_SUBADDR); |
|
sc_addr[0] = 0x48 + (val1 & 0x07); |
|
} |
|
|
|
if (kind != w83783s) { |
|
num_sc = 2; |
|
if (force_subclients[0] == id && |
|
force_subclients[1] == address) { |
|
sc_addr[1] = force_subclients[3]; |
|
} else { |
|
sc_addr[1] = 0x48 + ((val1 >> 4) & 0x07); |
|
} |
|
if (sc_addr[0] == sc_addr[1]) { |
|
dev_err(&new_client->dev, |
|
"Duplicate addresses 0x%x for subclients.\n", |
|
sc_addr[0]); |
|
err = -EBUSY; |
|
goto ERROR_SC_2; |
|
} |
|
} |
|
|
|
for (i = 0; i < num_sc; i++) { |
|
data->lm75[i] = i2c_new_dummy_device(adapter, sc_addr[i]); |
|
if (IS_ERR(data->lm75[i])) { |
|
dev_err(&new_client->dev, |
|
"Subclient %d registration at address 0x%x failed.\n", |
|
i, sc_addr[i]); |
|
err = PTR_ERR(data->lm75[i]); |
|
if (i == 1) |
|
goto ERROR_SC_3; |
|
goto ERROR_SC_2; |
|
} |
|
} |
|
|
|
return 0; |
|
|
|
/* Undo inits in case of errors */ |
|
ERROR_SC_3: |
|
i2c_unregister_device(data->lm75[0]); |
|
ERROR_SC_2: |
|
ERROR_SC_1: |
|
return err; |
|
} |
|
|
|
#define IN_UNIT_ATTRS(X) \ |
|
&sensor_dev_attr_in##X##_input.dev_attr.attr, \ |
|
&sensor_dev_attr_in##X##_min.dev_attr.attr, \ |
|
&sensor_dev_attr_in##X##_max.dev_attr.attr, \ |
|
&sensor_dev_attr_in##X##_alarm.dev_attr.attr, \ |
|
&sensor_dev_attr_in##X##_beep.dev_attr.attr |
|
|
|
#define FAN_UNIT_ATTRS(X) \ |
|
&sensor_dev_attr_fan##X##_input.dev_attr.attr, \ |
|
&sensor_dev_attr_fan##X##_min.dev_attr.attr, \ |
|
&sensor_dev_attr_fan##X##_div.dev_attr.attr, \ |
|
&sensor_dev_attr_fan##X##_alarm.dev_attr.attr, \ |
|
&sensor_dev_attr_fan##X##_beep.dev_attr.attr |
|
|
|
#define TEMP_UNIT_ATTRS(X) \ |
|
&sensor_dev_attr_temp##X##_input.dev_attr.attr, \ |
|
&sensor_dev_attr_temp##X##_max.dev_attr.attr, \ |
|
&sensor_dev_attr_temp##X##_max_hyst.dev_attr.attr, \ |
|
&sensor_dev_attr_temp##X##_alarm.dev_attr.attr, \ |
|
&sensor_dev_attr_temp##X##_beep.dev_attr.attr |
|
|
|
static struct attribute *w83781d_attributes[] = { |
|
IN_UNIT_ATTRS(0), |
|
IN_UNIT_ATTRS(2), |
|
IN_UNIT_ATTRS(3), |
|
IN_UNIT_ATTRS(4), |
|
IN_UNIT_ATTRS(5), |
|
IN_UNIT_ATTRS(6), |
|
FAN_UNIT_ATTRS(1), |
|
FAN_UNIT_ATTRS(2), |
|
FAN_UNIT_ATTRS(3), |
|
TEMP_UNIT_ATTRS(1), |
|
TEMP_UNIT_ATTRS(2), |
|
&dev_attr_cpu0_vid.attr, |
|
&dev_attr_vrm.attr, |
|
&dev_attr_alarms.attr, |
|
&dev_attr_beep_mask.attr, |
|
&sensor_dev_attr_beep_enable.dev_attr.attr, |
|
NULL |
|
}; |
|
static const struct attribute_group w83781d_group = { |
|
.attrs = w83781d_attributes, |
|
}; |
|
|
|
static struct attribute *w83781d_attributes_in1[] = { |
|
IN_UNIT_ATTRS(1), |
|
NULL |
|
}; |
|
static const struct attribute_group w83781d_group_in1 = { |
|
.attrs = w83781d_attributes_in1, |
|
}; |
|
|
|
static struct attribute *w83781d_attributes_in78[] = { |
|
IN_UNIT_ATTRS(7), |
|
IN_UNIT_ATTRS(8), |
|
NULL |
|
}; |
|
static const struct attribute_group w83781d_group_in78 = { |
|
.attrs = w83781d_attributes_in78, |
|
}; |
|
|
|
static struct attribute *w83781d_attributes_temp3[] = { |
|
TEMP_UNIT_ATTRS(3), |
|
NULL |
|
}; |
|
static const struct attribute_group w83781d_group_temp3 = { |
|
.attrs = w83781d_attributes_temp3, |
|
}; |
|
|
|
static struct attribute *w83781d_attributes_pwm12[] = { |
|
&sensor_dev_attr_pwm1.dev_attr.attr, |
|
&sensor_dev_attr_pwm2.dev_attr.attr, |
|
&dev_attr_pwm2_enable.attr, |
|
NULL |
|
}; |
|
static const struct attribute_group w83781d_group_pwm12 = { |
|
.attrs = w83781d_attributes_pwm12, |
|
}; |
|
|
|
static struct attribute *w83781d_attributes_pwm34[] = { |
|
&sensor_dev_attr_pwm3.dev_attr.attr, |
|
&sensor_dev_attr_pwm4.dev_attr.attr, |
|
NULL |
|
}; |
|
static const struct attribute_group w83781d_group_pwm34 = { |
|
.attrs = w83781d_attributes_pwm34, |
|
}; |
|
|
|
static struct attribute *w83781d_attributes_other[] = { |
|
&sensor_dev_attr_temp1_type.dev_attr.attr, |
|
&sensor_dev_attr_temp2_type.dev_attr.attr, |
|
&sensor_dev_attr_temp3_type.dev_attr.attr, |
|
NULL |
|
}; |
|
static const struct attribute_group w83781d_group_other = { |
|
.attrs = w83781d_attributes_other, |
|
}; |
|
|
|
/* No clean up is done on error, it's up to the caller */ |
|
static int |
|
w83781d_create_files(struct device *dev, int kind, int is_isa) |
|
{ |
|
int err; |
|
|
|
err = sysfs_create_group(&dev->kobj, &w83781d_group); |
|
if (err) |
|
return err; |
|
|
|
if (kind != w83783s) { |
|
err = sysfs_create_group(&dev->kobj, &w83781d_group_in1); |
|
if (err) |
|
return err; |
|
} |
|
if (kind != as99127f && kind != w83781d && kind != w83783s) { |
|
err = sysfs_create_group(&dev->kobj, &w83781d_group_in78); |
|
if (err) |
|
return err; |
|
} |
|
if (kind != w83783s) { |
|
err = sysfs_create_group(&dev->kobj, &w83781d_group_temp3); |
|
if (err) |
|
return err; |
|
|
|
if (kind != w83781d) { |
|
err = sysfs_chmod_file(&dev->kobj, |
|
&sensor_dev_attr_temp3_alarm.dev_attr.attr, |
|
S_IRUGO | S_IWUSR); |
|
if (err) |
|
return err; |
|
} |
|
} |
|
|
|
if (kind != w83781d && kind != as99127f) { |
|
err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm12); |
|
if (err) |
|
return err; |
|
} |
|
if (kind == w83782d && !is_isa) { |
|
err = sysfs_create_group(&dev->kobj, &w83781d_group_pwm34); |
|
if (err) |
|
return err; |
|
} |
|
|
|
if (kind != as99127f && kind != w83781d) { |
|
err = device_create_file(dev, |
|
&sensor_dev_attr_temp1_type.dev_attr); |
|
if (err) |
|
return err; |
|
err = device_create_file(dev, |
|
&sensor_dev_attr_temp2_type.dev_attr); |
|
if (err) |
|
return err; |
|
if (kind != w83783s) { |
|
err = device_create_file(dev, |
|
&sensor_dev_attr_temp3_type.dev_attr); |
|
if (err) |
|
return err; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* Return 0 if detection is successful, -ENODEV otherwise */ |
|
static int |
|
w83781d_detect(struct i2c_client *client, struct i2c_board_info *info) |
|
{ |
|
int val1, val2; |
|
struct w83781d_data *isa = w83781d_data_if_isa(); |
|
struct i2c_adapter *adapter = client->adapter; |
|
int address = client->addr; |
|
const char *client_name; |
|
enum vendor { winbond, asus } vendid; |
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
|
return -ENODEV; |
|
|
|
/* |
|
* We block updates of the ISA device to minimize the risk of |
|
* concurrent access to the same W83781D chip through different |
|
* interfaces. |
|
*/ |
|
if (isa) |
|
mutex_lock(&isa->update_lock); |
|
|
|
if (i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG) & 0x80) { |
|
dev_dbg(&adapter->dev, |
|
"Detection of w83781d chip failed at step 3\n"); |
|
goto err_nodev; |
|
} |
|
|
|
val1 = i2c_smbus_read_byte_data(client, W83781D_REG_BANK); |
|
val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN); |
|
/* Check for Winbond or Asus ID if in bank 0 */ |
|
if (!(val1 & 0x07) && |
|
((!(val1 & 0x80) && val2 != 0xa3 && val2 != 0xc3) || |
|
((val1 & 0x80) && val2 != 0x5c && val2 != 0x12))) { |
|
dev_dbg(&adapter->dev, |
|
"Detection of w83781d chip failed at step 4\n"); |
|
goto err_nodev; |
|
} |
|
/* |
|
* If Winbond SMBus, check address at 0x48. |
|
* Asus doesn't support, except for as99127f rev.2 |
|
*/ |
|
if ((!(val1 & 0x80) && val2 == 0xa3) || |
|
((val1 & 0x80) && val2 == 0x5c)) { |
|
if (i2c_smbus_read_byte_data(client, W83781D_REG_I2C_ADDR) |
|
!= address) { |
|
dev_dbg(&adapter->dev, |
|
"Detection of w83781d chip failed at step 5\n"); |
|
goto err_nodev; |
|
} |
|
} |
|
|
|
/* Put it now into bank 0 and Vendor ID High Byte */ |
|
i2c_smbus_write_byte_data(client, W83781D_REG_BANK, |
|
(i2c_smbus_read_byte_data(client, W83781D_REG_BANK) |
|
& 0x78) | 0x80); |
|
|
|
/* Get the vendor ID */ |
|
val2 = i2c_smbus_read_byte_data(client, W83781D_REG_CHIPMAN); |
|
if (val2 == 0x5c) |
|
vendid = winbond; |
|
else if (val2 == 0x12) |
|
vendid = asus; |
|
else { |
|
dev_dbg(&adapter->dev, |
|
"w83781d chip vendor is neither Winbond nor Asus\n"); |
|
goto err_nodev; |
|
} |
|
|
|
/* Determine the chip type. */ |
|
val1 = i2c_smbus_read_byte_data(client, W83781D_REG_WCHIPID); |
|
if ((val1 == 0x10 || val1 == 0x11) && vendid == winbond) |
|
client_name = "w83781d"; |
|
else if (val1 == 0x30 && vendid == winbond) |
|
client_name = "w83782d"; |
|
else if (val1 == 0x40 && vendid == winbond && address == 0x2d) |
|
client_name = "w83783s"; |
|
else if (val1 == 0x31) |
|
client_name = "as99127f"; |
|
else |
|
goto err_nodev; |
|
|
|
if (val1 <= 0x30 && w83781d_alias_detect(client, val1)) { |
|
dev_dbg(&adapter->dev, |
|
"Device at 0x%02x appears to be the same as ISA device\n", |
|
address); |
|
goto err_nodev; |
|
} |
|
|
|
if (isa) |
|
mutex_unlock(&isa->update_lock); |
|
|
|
strlcpy(info->type, client_name, I2C_NAME_SIZE); |
|
|
|
return 0; |
|
|
|
err_nodev: |
|
if (isa) |
|
mutex_unlock(&isa->update_lock); |
|
return -ENODEV; |
|
} |
|
|
|
static void w83781d_remove_files(struct device *dev) |
|
{ |
|
sysfs_remove_group(&dev->kobj, &w83781d_group); |
|
sysfs_remove_group(&dev->kobj, &w83781d_group_in1); |
|
sysfs_remove_group(&dev->kobj, &w83781d_group_in78); |
|
sysfs_remove_group(&dev->kobj, &w83781d_group_temp3); |
|
sysfs_remove_group(&dev->kobj, &w83781d_group_pwm12); |
|
sysfs_remove_group(&dev->kobj, &w83781d_group_pwm34); |
|
sysfs_remove_group(&dev->kobj, &w83781d_group_other); |
|
} |
|
|
|
static const struct i2c_device_id w83781d_ids[]; |
|
|
|
static int w83781d_probe(struct i2c_client *client) |
|
{ |
|
struct device *dev = &client->dev; |
|
struct w83781d_data *data; |
|
int err; |
|
|
|
data = devm_kzalloc(dev, sizeof(struct w83781d_data), GFP_KERNEL); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
i2c_set_clientdata(client, data); |
|
mutex_init(&data->lock); |
|
mutex_init(&data->update_lock); |
|
|
|
data->type = i2c_match_id(w83781d_ids, client)->driver_data; |
|
data->client = client; |
|
|
|
/* attach secondary i2c lm75-like clients */ |
|
err = w83781d_detect_subclients(client); |
|
if (err) |
|
return err; |
|
|
|
/* Initialize the chip */ |
|
w83781d_init_device(dev); |
|
|
|
/* Register sysfs hooks */ |
|
err = w83781d_create_files(dev, data->type, 0); |
|
if (err) |
|
goto exit_remove_files; |
|
|
|
data->hwmon_dev = hwmon_device_register(dev); |
|
if (IS_ERR(data->hwmon_dev)) { |
|
err = PTR_ERR(data->hwmon_dev); |
|
goto exit_remove_files; |
|
} |
|
|
|
return 0; |
|
|
|
exit_remove_files: |
|
w83781d_remove_files(dev); |
|
i2c_unregister_device(data->lm75[0]); |
|
i2c_unregister_device(data->lm75[1]); |
|
return err; |
|
} |
|
|
|
static int |
|
w83781d_remove(struct i2c_client *client) |
|
{ |
|
struct w83781d_data *data = i2c_get_clientdata(client); |
|
struct device *dev = &client->dev; |
|
|
|
hwmon_device_unregister(data->hwmon_dev); |
|
w83781d_remove_files(dev); |
|
|
|
i2c_unregister_device(data->lm75[0]); |
|
i2c_unregister_device(data->lm75[1]); |
|
|
|
return 0; |
|
} |
|
|
|
static int |
|
w83781d_read_value_i2c(struct w83781d_data *data, u16 reg) |
|
{ |
|
struct i2c_client *client = data->client; |
|
int res, bank; |
|
struct i2c_client *cl; |
|
|
|
bank = (reg >> 8) & 0x0f; |
|
if (bank > 2) |
|
/* switch banks */ |
|
i2c_smbus_write_byte_data(client, W83781D_REG_BANK, |
|
bank); |
|
if (bank == 0 || bank > 2) { |
|
res = i2c_smbus_read_byte_data(client, reg & 0xff); |
|
} else { |
|
/* switch to subclient */ |
|
cl = data->lm75[bank - 1]; |
|
/* convert from ISA to LM75 I2C addresses */ |
|
switch (reg & 0xff) { |
|
case 0x50: /* TEMP */ |
|
res = i2c_smbus_read_word_swapped(cl, 0); |
|
break; |
|
case 0x52: /* CONFIG */ |
|
res = i2c_smbus_read_byte_data(cl, 1); |
|
break; |
|
case 0x53: /* HYST */ |
|
res = i2c_smbus_read_word_swapped(cl, 2); |
|
break; |
|
case 0x55: /* OVER */ |
|
default: |
|
res = i2c_smbus_read_word_swapped(cl, 3); |
|
break; |
|
} |
|
} |
|
if (bank > 2) |
|
i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0); |
|
|
|
return res; |
|
} |
|
|
|
static int |
|
w83781d_write_value_i2c(struct w83781d_data *data, u16 reg, u16 value) |
|
{ |
|
struct i2c_client *client = data->client; |
|
int bank; |
|
struct i2c_client *cl; |
|
|
|
bank = (reg >> 8) & 0x0f; |
|
if (bank > 2) |
|
/* switch banks */ |
|
i2c_smbus_write_byte_data(client, W83781D_REG_BANK, |
|
bank); |
|
if (bank == 0 || bank > 2) { |
|
i2c_smbus_write_byte_data(client, reg & 0xff, |
|
value & 0xff); |
|
} else { |
|
/* switch to subclient */ |
|
cl = data->lm75[bank - 1]; |
|
/* convert from ISA to LM75 I2C addresses */ |
|
switch (reg & 0xff) { |
|
case 0x52: /* CONFIG */ |
|
i2c_smbus_write_byte_data(cl, 1, value & 0xff); |
|
break; |
|
case 0x53: /* HYST */ |
|
i2c_smbus_write_word_swapped(cl, 2, value); |
|
break; |
|
case 0x55: /* OVER */ |
|
i2c_smbus_write_word_swapped(cl, 3, value); |
|
break; |
|
} |
|
} |
|
if (bank > 2) |
|
i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0); |
|
|
|
return 0; |
|
} |
|
|
|
static void |
|
w83781d_init_device(struct device *dev) |
|
{ |
|
struct w83781d_data *data = dev_get_drvdata(dev); |
|
int i, p; |
|
int type = data->type; |
|
u8 tmp; |
|
|
|
if (reset && type != as99127f) { /* |
|
* this resets registers we don't have |
|
* documentation for on the as99127f |
|
*/ |
|
/* |
|
* Resetting the chip has been the default for a long time, |
|
* but it causes the BIOS initializations (fan clock dividers, |
|
* thermal sensor types...) to be lost, so it is now optional. |
|
* It might even go away if nobody reports it as being useful, |
|
* as I see very little reason why this would be needed at |
|
* all. |
|
*/ |
|
dev_info(dev, |
|
"If reset=1 solved a problem you were having, please report!\n"); |
|
|
|
/* save these registers */ |
|
i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG); |
|
p = w83781d_read_value(data, W83781D_REG_PWMCLK12); |
|
/* |
|
* Reset all except Watchdog values and last conversion values |
|
* This sets fan-divs to 2, among others |
|
*/ |
|
w83781d_write_value(data, W83781D_REG_CONFIG, 0x80); |
|
/* |
|
* Restore the registers and disable power-on abnormal beep. |
|
* This saves FAN 1/2/3 input/output values set by BIOS. |
|
*/ |
|
w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80); |
|
w83781d_write_value(data, W83781D_REG_PWMCLK12, p); |
|
/* |
|
* Disable master beep-enable (reset turns it on). |
|
* Individual beep_mask should be reset to off but for some |
|
* reason disabling this bit helps some people not get beeped |
|
*/ |
|
w83781d_write_value(data, W83781D_REG_BEEP_INTS2, 0); |
|
} |
|
|
|
/* |
|
* Disable power-on abnormal beep, as advised by the datasheet. |
|
* Already done if reset=1. |
|
*/ |
|
if (init && !reset && type != as99127f) { |
|
i = w83781d_read_value(data, W83781D_REG_BEEP_CONFIG); |
|
w83781d_write_value(data, W83781D_REG_BEEP_CONFIG, i | 0x80); |
|
} |
|
|
|
data->vrm = vid_which_vrm(); |
|
|
|
if ((type != w83781d) && (type != as99127f)) { |
|
tmp = w83781d_read_value(data, W83781D_REG_SCFG1); |
|
for (i = 1; i <= 3; i++) { |
|
if (!(tmp & BIT_SCFG1[i - 1])) { |
|
data->sens[i - 1] = 4; |
|
} else { |
|
if (w83781d_read_value |
|
(data, |
|
W83781D_REG_SCFG2) & BIT_SCFG2[i - 1]) |
|
data->sens[i - 1] = 1; |
|
else |
|
data->sens[i - 1] = 2; |
|
} |
|
if (type == w83783s && i == 2) |
|
break; |
|
} |
|
} |
|
|
|
if (init && type != as99127f) { |
|
/* Enable temp2 */ |
|
tmp = w83781d_read_value(data, W83781D_REG_TEMP2_CONFIG); |
|
if (tmp & 0x01) { |
|
dev_warn(dev, |
|
"Enabling temp2, readings might not make sense\n"); |
|
w83781d_write_value(data, W83781D_REG_TEMP2_CONFIG, |
|
tmp & 0xfe); |
|
} |
|
|
|
/* Enable temp3 */ |
|
if (type != w83783s) { |
|
tmp = w83781d_read_value(data, |
|
W83781D_REG_TEMP3_CONFIG); |
|
if (tmp & 0x01) { |
|
dev_warn(dev, |
|
"Enabling temp3, readings might not make sense\n"); |
|
w83781d_write_value(data, |
|
W83781D_REG_TEMP3_CONFIG, tmp & 0xfe); |
|
} |
|
} |
|
} |
|
|
|
/* Start monitoring */ |
|
w83781d_write_value(data, W83781D_REG_CONFIG, |
|
(w83781d_read_value(data, |
|
W83781D_REG_CONFIG) & 0xf7) |
|
| 0x01); |
|
|
|
/* A few vars need to be filled upon startup */ |
|
for (i = 0; i < 3; i++) { |
|
data->fan_min[i] = w83781d_read_value(data, |
|
W83781D_REG_FAN_MIN(i)); |
|
} |
|
|
|
mutex_init(&data->update_lock); |
|
} |
|
|
|
static struct w83781d_data *w83781d_update_device(struct device *dev) |
|
{ |
|
struct w83781d_data *data = dev_get_drvdata(dev); |
|
struct i2c_client *client = data->client; |
|
int i; |
|
|
|
mutex_lock(&data->update_lock); |
|
|
|
if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
|
|| !data->valid) { |
|
dev_dbg(dev, "Starting device update\n"); |
|
|
|
for (i = 0; i <= 8; i++) { |
|
if (data->type == w83783s && i == 1) |
|
continue; /* 783S has no in1 */ |
|
data->in[i] = |
|
w83781d_read_value(data, W83781D_REG_IN(i)); |
|
data->in_min[i] = |
|
w83781d_read_value(data, W83781D_REG_IN_MIN(i)); |
|
data->in_max[i] = |
|
w83781d_read_value(data, W83781D_REG_IN_MAX(i)); |
|
if ((data->type != w83782d) && (i == 6)) |
|
break; |
|
} |
|
for (i = 0; i < 3; i++) { |
|
data->fan[i] = |
|
w83781d_read_value(data, W83781D_REG_FAN(i)); |
|
data->fan_min[i] = |
|
w83781d_read_value(data, W83781D_REG_FAN_MIN(i)); |
|
} |
|
if (data->type != w83781d && data->type != as99127f) { |
|
for (i = 0; i < 4; i++) { |
|
data->pwm[i] = |
|
w83781d_read_value(data, |
|
W83781D_REG_PWM[i]); |
|
/* Only W83782D on SMBus has PWM3 and PWM4 */ |
|
if ((data->type != w83782d || !client) |
|
&& i == 1) |
|
break; |
|
} |
|
/* Only PWM2 can be disabled */ |
|
data->pwm2_enable = (w83781d_read_value(data, |
|
W83781D_REG_PWMCLK12) & 0x08) >> 3; |
|
} |
|
|
|
data->temp = w83781d_read_value(data, W83781D_REG_TEMP(1)); |
|
data->temp_max = |
|
w83781d_read_value(data, W83781D_REG_TEMP_OVER(1)); |
|
data->temp_max_hyst = |
|
w83781d_read_value(data, W83781D_REG_TEMP_HYST(1)); |
|
data->temp_add[0] = |
|
w83781d_read_value(data, W83781D_REG_TEMP(2)); |
|
data->temp_max_add[0] = |
|
w83781d_read_value(data, W83781D_REG_TEMP_OVER(2)); |
|
data->temp_max_hyst_add[0] = |
|
w83781d_read_value(data, W83781D_REG_TEMP_HYST(2)); |
|
if (data->type != w83783s) { |
|
data->temp_add[1] = |
|
w83781d_read_value(data, W83781D_REG_TEMP(3)); |
|
data->temp_max_add[1] = |
|
w83781d_read_value(data, |
|
W83781D_REG_TEMP_OVER(3)); |
|
data->temp_max_hyst_add[1] = |
|
w83781d_read_value(data, |
|
W83781D_REG_TEMP_HYST(3)); |
|
} |
|
i = w83781d_read_value(data, W83781D_REG_VID_FANDIV); |
|
data->vid = i & 0x0f; |
|
data->vid |= (w83781d_read_value(data, |
|
W83781D_REG_CHIPID) & 0x01) << 4; |
|
data->fan_div[0] = (i >> 4) & 0x03; |
|
data->fan_div[1] = (i >> 6) & 0x03; |
|
data->fan_div[2] = (w83781d_read_value(data, |
|
W83781D_REG_PIN) >> 6) & 0x03; |
|
if ((data->type != w83781d) && (data->type != as99127f)) { |
|
i = w83781d_read_value(data, W83781D_REG_VBAT); |
|
data->fan_div[0] |= (i >> 3) & 0x04; |
|
data->fan_div[1] |= (i >> 4) & 0x04; |
|
data->fan_div[2] |= (i >> 5) & 0x04; |
|
} |
|
if (data->type == w83782d) { |
|
data->alarms = w83781d_read_value(data, |
|
W83782D_REG_ALARM1) |
|
| (w83781d_read_value(data, |
|
W83782D_REG_ALARM2) << 8) |
|
| (w83781d_read_value(data, |
|
W83782D_REG_ALARM3) << 16); |
|
} else if (data->type == w83783s) { |
|
data->alarms = w83781d_read_value(data, |
|
W83782D_REG_ALARM1) |
|
| (w83781d_read_value(data, |
|
W83782D_REG_ALARM2) << 8); |
|
} else { |
|
/* |
|
* No real-time status registers, fall back to |
|
* interrupt status registers |
|
*/ |
|
data->alarms = w83781d_read_value(data, |
|
W83781D_REG_ALARM1) |
|
| (w83781d_read_value(data, |
|
W83781D_REG_ALARM2) << 8); |
|
} |
|
i = w83781d_read_value(data, W83781D_REG_BEEP_INTS2); |
|
data->beep_mask = (i << 8) + |
|
w83781d_read_value(data, W83781D_REG_BEEP_INTS1); |
|
if ((data->type != w83781d) && (data->type != as99127f)) { |
|
data->beep_mask |= |
|
w83781d_read_value(data, |
|
W83781D_REG_BEEP_INTS3) << 16; |
|
} |
|
data->last_updated = jiffies; |
|
data->valid = 1; |
|
} |
|
|
|
mutex_unlock(&data->update_lock); |
|
|
|
return data; |
|
} |
|
|
|
static const struct i2c_device_id w83781d_ids[] = { |
|
{ "w83781d", w83781d, }, |
|
{ "w83782d", w83782d, }, |
|
{ "w83783s", w83783s, }, |
|
{ "as99127f", as99127f }, |
|
{ /* LIST END */ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, w83781d_ids); |
|
|
|
static struct i2c_driver w83781d_driver = { |
|
.class = I2C_CLASS_HWMON, |
|
.driver = { |
|
.name = "w83781d", |
|
}, |
|
.probe_new = w83781d_probe, |
|
.remove = w83781d_remove, |
|
.id_table = w83781d_ids, |
|
.detect = w83781d_detect, |
|
.address_list = normal_i2c, |
|
}; |
|
|
|
/* |
|
* ISA related code |
|
*/ |
|
#ifdef CONFIG_ISA |
|
|
|
/* ISA device, if found */ |
|
static struct platform_device *pdev; |
|
|
|
static unsigned short isa_address = 0x290; |
|
|
|
/* |
|
* I2C devices get this name attribute automatically, but for ISA devices |
|
* we must create it by ourselves. |
|
*/ |
|
static ssize_t |
|
name_show(struct device *dev, struct device_attribute *devattr, char *buf) |
|
{ |
|
struct w83781d_data *data = dev_get_drvdata(dev); |
|
return sprintf(buf, "%s\n", data->name); |
|
} |
|
static DEVICE_ATTR_RO(name); |
|
|
|
static struct w83781d_data *w83781d_data_if_isa(void) |
|
{ |
|
return pdev ? platform_get_drvdata(pdev) : NULL; |
|
} |
|
|
|
/* Returns 1 if the I2C chip appears to be an alias of the ISA chip */ |
|
static int w83781d_alias_detect(struct i2c_client *client, u8 chipid) |
|
{ |
|
struct w83781d_data *isa; |
|
int i; |
|
|
|
if (!pdev) /* No ISA chip */ |
|
return 0; |
|
|
|
isa = platform_get_drvdata(pdev); |
|
|
|
if (w83781d_read_value(isa, W83781D_REG_I2C_ADDR) != client->addr) |
|
return 0; /* Address doesn't match */ |
|
if (w83781d_read_value(isa, W83781D_REG_WCHIPID) != chipid) |
|
return 0; /* Chip type doesn't match */ |
|
|
|
/* |
|
* We compare all the limit registers, the config register and the |
|
* interrupt mask registers |
|
*/ |
|
for (i = 0x2b; i <= 0x3d; i++) { |
|
if (w83781d_read_value(isa, i) != |
|
i2c_smbus_read_byte_data(client, i)) |
|
return 0; |
|
} |
|
if (w83781d_read_value(isa, W83781D_REG_CONFIG) != |
|
i2c_smbus_read_byte_data(client, W83781D_REG_CONFIG)) |
|
return 0; |
|
for (i = 0x43; i <= 0x46; i++) { |
|
if (w83781d_read_value(isa, i) != |
|
i2c_smbus_read_byte_data(client, i)) |
|
return 0; |
|
} |
|
|
|
return 1; |
|
} |
|
|
|
static int |
|
w83781d_read_value_isa(struct w83781d_data *data, u16 reg) |
|
{ |
|
int word_sized, res; |
|
|
|
word_sized = (((reg & 0xff00) == 0x100) |
|
|| ((reg & 0xff00) == 0x200)) |
|
&& (((reg & 0x00ff) == 0x50) |
|
|| ((reg & 0x00ff) == 0x53) |
|
|| ((reg & 0x00ff) == 0x55)); |
|
if (reg & 0xff00) { |
|
outb_p(W83781D_REG_BANK, |
|
data->isa_addr + W83781D_ADDR_REG_OFFSET); |
|
outb_p(reg >> 8, |
|
data->isa_addr + W83781D_DATA_REG_OFFSET); |
|
} |
|
outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET); |
|
res = inb_p(data->isa_addr + W83781D_DATA_REG_OFFSET); |
|
if (word_sized) { |
|
outb_p((reg & 0xff) + 1, |
|
data->isa_addr + W83781D_ADDR_REG_OFFSET); |
|
res = |
|
(res << 8) + inb_p(data->isa_addr + |
|
W83781D_DATA_REG_OFFSET); |
|
} |
|
if (reg & 0xff00) { |
|
outb_p(W83781D_REG_BANK, |
|
data->isa_addr + W83781D_ADDR_REG_OFFSET); |
|
outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET); |
|
} |
|
return res; |
|
} |
|
|
|
static void |
|
w83781d_write_value_isa(struct w83781d_data *data, u16 reg, u16 value) |
|
{ |
|
int word_sized; |
|
|
|
word_sized = (((reg & 0xff00) == 0x100) |
|
|| ((reg & 0xff00) == 0x200)) |
|
&& (((reg & 0x00ff) == 0x53) |
|
|| ((reg & 0x00ff) == 0x55)); |
|
if (reg & 0xff00) { |
|
outb_p(W83781D_REG_BANK, |
|
data->isa_addr + W83781D_ADDR_REG_OFFSET); |
|
outb_p(reg >> 8, |
|
data->isa_addr + W83781D_DATA_REG_OFFSET); |
|
} |
|
outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET); |
|
if (word_sized) { |
|
outb_p(value >> 8, |
|
data->isa_addr + W83781D_DATA_REG_OFFSET); |
|
outb_p((reg & 0xff) + 1, |
|
data->isa_addr + W83781D_ADDR_REG_OFFSET); |
|
} |
|
outb_p(value & 0xff, data->isa_addr + W83781D_DATA_REG_OFFSET); |
|
if (reg & 0xff00) { |
|
outb_p(W83781D_REG_BANK, |
|
data->isa_addr + W83781D_ADDR_REG_OFFSET); |
|
outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET); |
|
} |
|
} |
|
|
|
/* |
|
* The SMBus locks itself, usually, but nothing may access the Winbond between |
|
* bank switches. ISA access must always be locked explicitly! |
|
* We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks, |
|
* would slow down the W83781D access and should not be necessary. |
|
* There are some ugly typecasts here, but the good news is - they should |
|
* nowhere else be necessary! |
|
*/ |
|
static int |
|
w83781d_read_value(struct w83781d_data *data, u16 reg) |
|
{ |
|
struct i2c_client *client = data->client; |
|
int res; |
|
|
|
mutex_lock(&data->lock); |
|
if (client) |
|
res = w83781d_read_value_i2c(data, reg); |
|
else |
|
res = w83781d_read_value_isa(data, reg); |
|
mutex_unlock(&data->lock); |
|
return res; |
|
} |
|
|
|
static int |
|
w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value) |
|
{ |
|
struct i2c_client *client = data->client; |
|
|
|
mutex_lock(&data->lock); |
|
if (client) |
|
w83781d_write_value_i2c(data, reg, value); |
|
else |
|
w83781d_write_value_isa(data, reg, value); |
|
mutex_unlock(&data->lock); |
|
return 0; |
|
} |
|
|
|
static int |
|
w83781d_isa_probe(struct platform_device *pdev) |
|
{ |
|
int err, reg; |
|
struct w83781d_data *data; |
|
struct resource *res; |
|
|
|
/* Reserve the ISA region */ |
|
res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
|
if (!devm_request_region(&pdev->dev, |
|
res->start + W83781D_ADDR_REG_OFFSET, 2, |
|
"w83781d")) |
|
return -EBUSY; |
|
|
|
data = devm_kzalloc(&pdev->dev, sizeof(struct w83781d_data), |
|
GFP_KERNEL); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
mutex_init(&data->lock); |
|
data->isa_addr = res->start; |
|
platform_set_drvdata(pdev, data); |
|
|
|
reg = w83781d_read_value(data, W83781D_REG_WCHIPID); |
|
switch (reg) { |
|
case 0x30: |
|
data->type = w83782d; |
|
data->name = "w83782d"; |
|
break; |
|
default: |
|
data->type = w83781d; |
|
data->name = "w83781d"; |
|
} |
|
|
|
/* Initialize the W83781D chip */ |
|
w83781d_init_device(&pdev->dev); |
|
|
|
/* Register sysfs hooks */ |
|
err = w83781d_create_files(&pdev->dev, data->type, 1); |
|
if (err) |
|
goto exit_remove_files; |
|
|
|
err = device_create_file(&pdev->dev, &dev_attr_name); |
|
if (err) |
|
goto exit_remove_files; |
|
|
|
data->hwmon_dev = hwmon_device_register(&pdev->dev); |
|
if (IS_ERR(data->hwmon_dev)) { |
|
err = PTR_ERR(data->hwmon_dev); |
|
goto exit_remove_files; |
|
} |
|
|
|
return 0; |
|
|
|
exit_remove_files: |
|
w83781d_remove_files(&pdev->dev); |
|
device_remove_file(&pdev->dev, &dev_attr_name); |
|
return err; |
|
} |
|
|
|
static int |
|
w83781d_isa_remove(struct platform_device *pdev) |
|
{ |
|
struct w83781d_data *data = platform_get_drvdata(pdev); |
|
|
|
hwmon_device_unregister(data->hwmon_dev); |
|
w83781d_remove_files(&pdev->dev); |
|
device_remove_file(&pdev->dev, &dev_attr_name); |
|
|
|
return 0; |
|
} |
|
|
|
static struct platform_driver w83781d_isa_driver = { |
|
.driver = { |
|
.name = "w83781d", |
|
}, |
|
.probe = w83781d_isa_probe, |
|
.remove = w83781d_isa_remove, |
|
}; |
|
|
|
/* return 1 if a supported chip is found, 0 otherwise */ |
|
static int __init |
|
w83781d_isa_found(unsigned short address) |
|
{ |
|
int val, save, found = 0; |
|
int port; |
|
|
|
/* |
|
* Some boards declare base+0 to base+7 as a PNP device, some base+4 |
|
* to base+7 and some base+5 to base+6. So we better request each port |
|
* individually for the probing phase. |
|
*/ |
|
for (port = address; port < address + W83781D_EXTENT; port++) { |
|
if (!request_region(port, 1, "w83781d")) { |
|
pr_debug("Failed to request port 0x%x\n", port); |
|
goto release; |
|
} |
|
} |
|
|
|
#define REALLY_SLOW_IO |
|
/* |
|
* We need the timeouts for at least some W83781D-like |
|
* chips. But only if we read 'undefined' registers. |
|
*/ |
|
val = inb_p(address + 1); |
|
if (inb_p(address + 2) != val |
|
|| inb_p(address + 3) != val |
|
|| inb_p(address + 7) != val) { |
|
pr_debug("Detection failed at step %d\n", 1); |
|
goto release; |
|
} |
|
#undef REALLY_SLOW_IO |
|
|
|
/* |
|
* We should be able to change the 7 LSB of the address port. The |
|
* MSB (busy flag) should be clear initially, set after the write. |
|
*/ |
|
save = inb_p(address + W83781D_ADDR_REG_OFFSET); |
|
if (save & 0x80) { |
|
pr_debug("Detection failed at step %d\n", 2); |
|
goto release; |
|
} |
|
val = ~save & 0x7f; |
|
outb_p(val, address + W83781D_ADDR_REG_OFFSET); |
|
if (inb_p(address + W83781D_ADDR_REG_OFFSET) != (val | 0x80)) { |
|
outb_p(save, address + W83781D_ADDR_REG_OFFSET); |
|
pr_debug("Detection failed at step %d\n", 3); |
|
goto release; |
|
} |
|
|
|
/* We found a device, now see if it could be a W83781D */ |
|
outb_p(W83781D_REG_CONFIG, address + W83781D_ADDR_REG_OFFSET); |
|
val = inb_p(address + W83781D_DATA_REG_OFFSET); |
|
if (val & 0x80) { |
|
pr_debug("Detection failed at step %d\n", 4); |
|
goto release; |
|
} |
|
outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET); |
|
save = inb_p(address + W83781D_DATA_REG_OFFSET); |
|
outb_p(W83781D_REG_CHIPMAN, address + W83781D_ADDR_REG_OFFSET); |
|
val = inb_p(address + W83781D_DATA_REG_OFFSET); |
|
if ((!(save & 0x80) && (val != 0xa3)) |
|
|| ((save & 0x80) && (val != 0x5c))) { |
|
pr_debug("Detection failed at step %d\n", 5); |
|
goto release; |
|
} |
|
outb_p(W83781D_REG_I2C_ADDR, address + W83781D_ADDR_REG_OFFSET); |
|
val = inb_p(address + W83781D_DATA_REG_OFFSET); |
|
if (val < 0x03 || val > 0x77) { /* Not a valid I2C address */ |
|
pr_debug("Detection failed at step %d\n", 6); |
|
goto release; |
|
} |
|
|
|
/* The busy flag should be clear again */ |
|
if (inb_p(address + W83781D_ADDR_REG_OFFSET) & 0x80) { |
|
pr_debug("Detection failed at step %d\n", 7); |
|
goto release; |
|
} |
|
|
|
/* Determine the chip type */ |
|
outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET); |
|
save = inb_p(address + W83781D_DATA_REG_OFFSET); |
|
outb_p(save & 0xf8, address + W83781D_DATA_REG_OFFSET); |
|
outb_p(W83781D_REG_WCHIPID, address + W83781D_ADDR_REG_OFFSET); |
|
val = inb_p(address + W83781D_DATA_REG_OFFSET); |
|
if ((val & 0xfe) == 0x10 /* W83781D */ |
|
|| val == 0x30) /* W83782D */ |
|
found = 1; |
|
|
|
if (found) |
|
pr_info("Found a %s chip at %#x\n", |
|
val == 0x30 ? "W83782D" : "W83781D", (int)address); |
|
|
|
release: |
|
for (port--; port >= address; port--) |
|
release_region(port, 1); |
|
return found; |
|
} |
|
|
|
static int __init |
|
w83781d_isa_device_add(unsigned short address) |
|
{ |
|
struct resource res = { |
|
.start = address, |
|
.end = address + W83781D_EXTENT - 1, |
|
.name = "w83781d", |
|
.flags = IORESOURCE_IO, |
|
}; |
|
int err; |
|
|
|
pdev = platform_device_alloc("w83781d", address); |
|
if (!pdev) { |
|
err = -ENOMEM; |
|
pr_err("Device allocation failed\n"); |
|
goto exit; |
|
} |
|
|
|
err = platform_device_add_resources(pdev, &res, 1); |
|
if (err) { |
|
pr_err("Device resource addition failed (%d)\n", err); |
|
goto exit_device_put; |
|
} |
|
|
|
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: |
|
pdev = NULL; |
|
return err; |
|
} |
|
|
|
static int __init |
|
w83781d_isa_register(void) |
|
{ |
|
int res; |
|
|
|
if (w83781d_isa_found(isa_address)) { |
|
res = platform_driver_register(&w83781d_isa_driver); |
|
if (res) |
|
goto exit; |
|
|
|
/* Sets global pdev as a side effect */ |
|
res = w83781d_isa_device_add(isa_address); |
|
if (res) |
|
goto exit_unreg_isa_driver; |
|
} |
|
|
|
return 0; |
|
|
|
exit_unreg_isa_driver: |
|
platform_driver_unregister(&w83781d_isa_driver); |
|
exit: |
|
return res; |
|
} |
|
|
|
static void |
|
w83781d_isa_unregister(void) |
|
{ |
|
if (pdev) { |
|
platform_device_unregister(pdev); |
|
platform_driver_unregister(&w83781d_isa_driver); |
|
} |
|
} |
|
#else /* !CONFIG_ISA */ |
|
|
|
static struct w83781d_data *w83781d_data_if_isa(void) |
|
{ |
|
return NULL; |
|
} |
|
|
|
static int |
|
w83781d_alias_detect(struct i2c_client *client, u8 chipid) |
|
{ |
|
return 0; |
|
} |
|
|
|
static int |
|
w83781d_read_value(struct w83781d_data *data, u16 reg) |
|
{ |
|
int res; |
|
|
|
mutex_lock(&data->lock); |
|
res = w83781d_read_value_i2c(data, reg); |
|
mutex_unlock(&data->lock); |
|
|
|
return res; |
|
} |
|
|
|
static int |
|
w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value) |
|
{ |
|
mutex_lock(&data->lock); |
|
w83781d_write_value_i2c(data, reg, value); |
|
mutex_unlock(&data->lock); |
|
|
|
return 0; |
|
} |
|
|
|
static int __init |
|
w83781d_isa_register(void) |
|
{ |
|
return 0; |
|
} |
|
|
|
static void |
|
w83781d_isa_unregister(void) |
|
{ |
|
} |
|
#endif /* CONFIG_ISA */ |
|
|
|
static int __init |
|
sensors_w83781d_init(void) |
|
{ |
|
int res; |
|
|
|
/* |
|
* We register the ISA device first, so that we can skip the |
|
* registration of an I2C interface to the same device. |
|
*/ |
|
res = w83781d_isa_register(); |
|
if (res) |
|
goto exit; |
|
|
|
res = i2c_add_driver(&w83781d_driver); |
|
if (res) |
|
goto exit_unreg_isa; |
|
|
|
return 0; |
|
|
|
exit_unreg_isa: |
|
w83781d_isa_unregister(); |
|
exit: |
|
return res; |
|
} |
|
|
|
static void __exit |
|
sensors_w83781d_exit(void) |
|
{ |
|
w83781d_isa_unregister(); |
|
i2c_del_driver(&w83781d_driver); |
|
} |
|
|
|
MODULE_AUTHOR("Frodo Looijaard <[email protected]>, " |
|
"Philip Edelbrock <[email protected]>, " |
|
"and Mark Studebaker <[email protected]>"); |
|
MODULE_DESCRIPTION("W83781D driver"); |
|
MODULE_LICENSE("GPL"); |
|
|
|
module_init(sensors_w83781d_init); |
|
module_exit(sensors_w83781d_exit);
|
|
|