forked from Minki/linux
cf0676fe42
Add the voltage measuring support to W83627EHF. The code is based on the patch provided by Yuan Mu from Winbond. Signed-off-by: Yuan Mu <Ymu@winbond.com.tw> Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
919 lines
27 KiB
C
919 lines
27 KiB
C
/*
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w83627ehf - Driver for the hardware monitoring functionality of
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the Winbond W83627EHF Super-I/O chip
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Copyright (C) 2005 Jean Delvare <khali@linux-fr.org>
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Shamelessly ripped from the w83627hf driver
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Copyright (C) 2003 Mark Studebaker
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Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help
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in testing and debugging this driver.
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This driver also supports the W83627EHG, which is the lead-free
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version of the W83627EHF.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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Supports the following chips:
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Chip #vin #fan #pwm #temp chip_id man_id
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w83627ehf 10 5 - 3 0x88 0x5ca3
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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/i2c-isa.h>
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#include <linux/hwmon.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 <asm/io.h>
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#include "lm75.h"
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/* The actual ISA address is read from Super-I/O configuration space */
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static unsigned short address;
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/*
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* Super-I/O constants and functions
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*/
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static int REG; /* The register to read/write */
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static int VAL; /* The value to read/write */
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#define W83627EHF_LD_HWM 0x0b
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#define SIO_REG_LDSEL 0x07 /* Logical device select */
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#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
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#define SIO_REG_ENABLE 0x30 /* Logical device enable */
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#define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */
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#define SIO_W83627EHF_ID 0x8840
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#define SIO_ID_MASK 0xFFC0
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static inline void
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superio_outb(int reg, int val)
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{
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outb(reg, REG);
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outb(val, VAL);
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}
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static inline int
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superio_inb(int reg)
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{
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outb(reg, REG);
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return inb(VAL);
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}
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static inline void
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superio_select(int ld)
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{
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outb(SIO_REG_LDSEL, REG);
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outb(ld, VAL);
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}
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static inline void
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superio_enter(void)
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{
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outb(0x87, REG);
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outb(0x87, REG);
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}
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static inline void
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superio_exit(void)
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{
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outb(0x02, REG);
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outb(0x02, VAL);
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}
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/*
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* ISA constants
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*/
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#define REGION_ALIGNMENT ~7
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#define REGION_OFFSET 5
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#define REGION_LENGTH 2
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#define ADDR_REG_OFFSET 5
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#define DATA_REG_OFFSET 6
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#define W83627EHF_REG_BANK 0x4E
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#define W83627EHF_REG_CONFIG 0x40
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#define W83627EHF_REG_CHIP_ID 0x49
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#define W83627EHF_REG_MAN_ID 0x4F
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static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 };
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static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c };
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/* The W83627EHF registers for nr=7,8,9 are in bank 5 */
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#define W83627EHF_REG_IN_MAX(nr) ((nr < 7) ? (0x2b + (nr) * 2) : \
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(0x554 + (((nr) - 7) * 2)))
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#define W83627EHF_REG_IN_MIN(nr) ((nr < 7) ? (0x2c + (nr) * 2) : \
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(0x555 + (((nr) - 7) * 2)))
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#define W83627EHF_REG_IN(nr) ((nr < 7) ? (0x20 + (nr)) : \
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(0x550 + (nr) - 7))
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#define W83627EHF_REG_TEMP1 0x27
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#define W83627EHF_REG_TEMP1_HYST 0x3a
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#define W83627EHF_REG_TEMP1_OVER 0x39
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static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 };
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static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 };
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static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 };
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static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 };
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/* Fan clock dividers are spread over the following five registers */
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#define W83627EHF_REG_FANDIV1 0x47
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#define W83627EHF_REG_FANDIV2 0x4B
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#define W83627EHF_REG_VBAT 0x5D
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#define W83627EHF_REG_DIODE 0x59
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#define W83627EHF_REG_SMI_OVT 0x4C
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/*
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* Conversions
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*/
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static inline unsigned int
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fan_from_reg(u8 reg, unsigned int div)
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{
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if (reg == 0 || reg == 255)
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return 0;
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return 1350000U / (reg * div);
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}
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static inline unsigned int
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div_from_reg(u8 reg)
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{
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return 1 << reg;
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}
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static inline int
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temp1_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
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temp1_to_reg(int temp)
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{
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if (temp <= -128000)
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return -128;
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if (temp >= 127000)
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return 127;
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if (temp < 0)
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return (temp - 500) / 1000;
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return (temp + 500) / 1000;
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}
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/* Some of analog inputs have internal scaling (2x), 8mV is ADC LSB */
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static u8 scale_in[10] = { 8, 8, 16, 16, 8, 8, 8, 16, 16, 8 };
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static inline long in_from_reg(u8 reg, u8 nr)
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{
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return reg * scale_in[nr];
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}
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static inline u8 in_to_reg(u32 val, u8 nr)
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{
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return SENSORS_LIMIT(((val + (scale_in[nr] / 2)) / scale_in[nr]), 0, 255);
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}
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/*
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* Data structures and manipulation thereof
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*/
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struct w83627ehf_data {
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struct i2c_client client;
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struct class_device *class_dev;
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struct mutex lock;
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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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/* Register values */
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u8 in[10]; /* Register value */
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u8 in_max[10]; /* Register value */
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u8 in_min[10]; /* Register value */
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u8 fan[5];
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u8 fan_min[5];
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u8 fan_div[5];
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u8 has_fan; /* some fan inputs can be disabled */
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s8 temp1;
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s8 temp1_max;
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s8 temp1_max_hyst;
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s16 temp[2];
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s16 temp_max[2];
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s16 temp_max_hyst[2];
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};
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static inline int is_word_sized(u16 reg)
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{
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return (((reg & 0xff00) == 0x100
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|| (reg & 0xff00) == 0x200)
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&& ((reg & 0x00ff) == 0x50
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|| (reg & 0x00ff) == 0x53
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|| (reg & 0x00ff) == 0x55));
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}
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/* We assume that the default bank is 0, thus the following two functions do
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nothing for registers which live in bank 0. For others, they respectively
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set the bank register to the correct value (before the register is
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accessed), and back to 0 (afterwards). */
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static inline void w83627ehf_set_bank(struct i2c_client *client, u16 reg)
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{
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if (reg & 0xff00) {
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outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET);
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outb_p(reg >> 8, client->addr + DATA_REG_OFFSET);
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}
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}
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static inline void w83627ehf_reset_bank(struct i2c_client *client, u16 reg)
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{
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if (reg & 0xff00) {
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outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET);
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outb_p(0, client->addr + DATA_REG_OFFSET);
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}
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}
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static u16 w83627ehf_read_value(struct i2c_client *client, u16 reg)
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{
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struct w83627ehf_data *data = i2c_get_clientdata(client);
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int res, word_sized = is_word_sized(reg);
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mutex_lock(&data->lock);
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w83627ehf_set_bank(client, reg);
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outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET);
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res = inb_p(client->addr + DATA_REG_OFFSET);
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if (word_sized) {
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outb_p((reg & 0xff) + 1,
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client->addr + ADDR_REG_OFFSET);
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res = (res << 8) + inb_p(client->addr + DATA_REG_OFFSET);
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}
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w83627ehf_reset_bank(client, reg);
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mutex_unlock(&data->lock);
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return res;
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}
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static int w83627ehf_write_value(struct i2c_client *client, u16 reg, u16 value)
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{
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struct w83627ehf_data *data = i2c_get_clientdata(client);
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int word_sized = is_word_sized(reg);
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mutex_lock(&data->lock);
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w83627ehf_set_bank(client, reg);
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outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET);
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if (word_sized) {
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outb_p(value >> 8, client->addr + DATA_REG_OFFSET);
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outb_p((reg & 0xff) + 1,
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client->addr + ADDR_REG_OFFSET);
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}
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outb_p(value & 0xff, client->addr + DATA_REG_OFFSET);
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w83627ehf_reset_bank(client, reg);
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mutex_unlock(&data->lock);
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return 0;
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}
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/* This function assumes that the caller holds data->update_lock */
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static void w83627ehf_write_fan_div(struct i2c_client *client, int nr)
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{
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struct w83627ehf_data *data = i2c_get_clientdata(client);
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u8 reg;
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switch (nr) {
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case 0:
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reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0xcf)
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| ((data->fan_div[0] & 0x03) << 4);
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w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg);
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reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xdf)
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| ((data->fan_div[0] & 0x04) << 3);
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w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg);
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break;
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case 1:
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reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0x3f)
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| ((data->fan_div[1] & 0x03) << 6);
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w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg);
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reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xbf)
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| ((data->fan_div[1] & 0x04) << 4);
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w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg);
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break;
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case 2:
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reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV2) & 0x3f)
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| ((data->fan_div[2] & 0x03) << 6);
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w83627ehf_write_value(client, W83627EHF_REG_FANDIV2, reg);
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reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0x7f)
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| ((data->fan_div[2] & 0x04) << 5);
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w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg);
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break;
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case 3:
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reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0xfc)
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| (data->fan_div[3] & 0x03);
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w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg);
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reg = (w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT) & 0x7f)
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| ((data->fan_div[3] & 0x04) << 5);
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w83627ehf_write_value(client, W83627EHF_REG_SMI_OVT, reg);
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break;
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case 4:
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reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0x73)
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| ((data->fan_div[4] & 0x03) << 3)
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| ((data->fan_div[4] & 0x04) << 5);
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w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg);
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break;
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}
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}
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static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct w83627ehf_data *data = i2c_get_clientdata(client);
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int i;
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mutex_lock(&data->update_lock);
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if (time_after(jiffies, data->last_updated + HZ)
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|| !data->valid) {
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/* Fan clock dividers */
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i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1);
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data->fan_div[0] = (i >> 4) & 0x03;
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data->fan_div[1] = (i >> 6) & 0x03;
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i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV2);
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data->fan_div[2] = (i >> 6) & 0x03;
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i = w83627ehf_read_value(client, W83627EHF_REG_VBAT);
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data->fan_div[0] |= (i >> 3) & 0x04;
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data->fan_div[1] |= (i >> 4) & 0x04;
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data->fan_div[2] |= (i >> 5) & 0x04;
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if (data->has_fan & ((1 << 3) | (1 << 4))) {
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i = w83627ehf_read_value(client, W83627EHF_REG_DIODE);
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data->fan_div[3] = i & 0x03;
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data->fan_div[4] = ((i >> 2) & 0x03)
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| ((i >> 5) & 0x04);
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}
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if (data->has_fan & (1 << 3)) {
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i = w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT);
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data->fan_div[3] |= (i >> 5) & 0x04;
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}
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/* Measured voltages and limits */
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for (i = 0; i < 10; i++) {
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data->in[i] = w83627ehf_read_value(client,
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W83627EHF_REG_IN(i));
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data->in_min[i] = w83627ehf_read_value(client,
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W83627EHF_REG_IN_MIN(i));
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data->in_max[i] = w83627ehf_read_value(client,
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W83627EHF_REG_IN_MAX(i));
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}
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/* Measured fan speeds and limits */
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for (i = 0; i < 5; i++) {
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if (!(data->has_fan & (1 << i)))
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continue;
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data->fan[i] = w83627ehf_read_value(client,
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W83627EHF_REG_FAN[i]);
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data->fan_min[i] = w83627ehf_read_value(client,
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W83627EHF_REG_FAN_MIN[i]);
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/* If we failed to measure the fan speed and clock
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divider can be increased, let's try that for next
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time */
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if (data->fan[i] == 0xff
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&& data->fan_div[i] < 0x07) {
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dev_dbg(&client->dev, "Increasing fan %d "
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"clock divider from %u to %u\n",
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i, div_from_reg(data->fan_div[i]),
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div_from_reg(data->fan_div[i] + 1));
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data->fan_div[i]++;
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w83627ehf_write_fan_div(client, i);
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/* Preserve min limit if possible */
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if (data->fan_min[i] >= 2
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&& data->fan_min[i] != 255)
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w83627ehf_write_value(client,
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W83627EHF_REG_FAN_MIN[i],
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(data->fan_min[i] /= 2));
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}
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}
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/* Measured temperatures and limits */
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data->temp1 = w83627ehf_read_value(client,
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W83627EHF_REG_TEMP1);
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data->temp1_max = w83627ehf_read_value(client,
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W83627EHF_REG_TEMP1_OVER);
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data->temp1_max_hyst = w83627ehf_read_value(client,
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W83627EHF_REG_TEMP1_HYST);
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for (i = 0; i < 2; i++) {
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data->temp[i] = w83627ehf_read_value(client,
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W83627EHF_REG_TEMP[i]);
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data->temp_max[i] = w83627ehf_read_value(client,
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W83627EHF_REG_TEMP_OVER[i]);
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data->temp_max_hyst[i] = w83627ehf_read_value(client,
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W83627EHF_REG_TEMP_HYST[i]);
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}
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data->last_updated = jiffies;
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data->valid = 1;
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}
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mutex_unlock(&data->update_lock);
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return data;
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}
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|
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/*
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* Sysfs callback functions
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*/
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#define show_in_reg(reg) \
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|
static ssize_t \
|
|
show_##reg(struct device *dev, struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
struct w83627ehf_data *data = w83627ehf_update_device(dev); \
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
|
|
int nr = sensor_attr->index; \
|
|
return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr)); \
|
|
}
|
|
show_in_reg(in)
|
|
show_in_reg(in_min)
|
|
show_in_reg(in_max)
|
|
|
|
#define store_in_reg(REG, reg) \
|
|
static ssize_t \
|
|
store_in_##reg (struct device *dev, struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
struct i2c_client *client = to_i2c_client(dev); \
|
|
struct w83627ehf_data *data = i2c_get_clientdata(client); \
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
|
|
int nr = sensor_attr->index; \
|
|
u32 val = simple_strtoul(buf, NULL, 10); \
|
|
\
|
|
mutex_lock(&data->update_lock); \
|
|
data->in_##reg[nr] = in_to_reg(val, nr); \
|
|
w83627ehf_write_value(client, W83627EHF_REG_IN_##REG(nr), \
|
|
data->in_##reg[nr]); \
|
|
mutex_unlock(&data->update_lock); \
|
|
return count; \
|
|
}
|
|
|
|
store_in_reg(MIN, min)
|
|
store_in_reg(MAX, max)
|
|
|
|
static struct sensor_device_attribute sda_in_input[] = {
|
|
SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
|
|
SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
|
|
SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
|
|
SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
|
|
SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
|
|
SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
|
|
SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
|
|
SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
|
|
SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
|
|
SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
|
|
};
|
|
|
|
static struct sensor_device_attribute sda_in_min[] = {
|
|
SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
|
|
SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
|
|
SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
|
|
SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
|
|
SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
|
|
SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
|
|
SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
|
|
SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
|
|
SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
|
|
SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
|
|
};
|
|
|
|
static struct sensor_device_attribute sda_in_max[] = {
|
|
SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
|
|
SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
|
|
SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
|
|
SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
|
|
SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
|
|
SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
|
|
SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
|
|
SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
|
|
SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
|
|
SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
|
|
};
|
|
|
|
static void device_create_file_in(struct device *dev, int i)
|
|
{
|
|
device_create_file(dev, &sda_in_input[i].dev_attr);
|
|
device_create_file(dev, &sda_in_min[i].dev_attr);
|
|
device_create_file(dev, &sda_in_max[i].dev_attr);
|
|
}
|
|
|
|
#define show_fan_reg(reg) \
|
|
static ssize_t \
|
|
show_##reg(struct device *dev, struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
struct w83627ehf_data *data = w83627ehf_update_device(dev); \
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
|
|
int nr = sensor_attr->index; \
|
|
return sprintf(buf, "%d\n", \
|
|
fan_from_reg(data->reg[nr], \
|
|
div_from_reg(data->fan_div[nr]))); \
|
|
}
|
|
show_fan_reg(fan);
|
|
show_fan_reg(fan_min);
|
|
|
|
static ssize_t
|
|
show_fan_div(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct w83627ehf_data *data = w83627ehf_update_device(dev);
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
return sprintf(buf, "%u\n", div_from_reg(data->fan_div[nr]));
|
|
}
|
|
|
|
static ssize_t
|
|
store_fan_min(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct w83627ehf_data *data = i2c_get_clientdata(client);
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
|
|
int nr = sensor_attr->index;
|
|
unsigned int val = simple_strtoul(buf, NULL, 10);
|
|
unsigned int reg;
|
|
u8 new_div;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
if (!val) {
|
|
/* No min limit, alarm disabled */
|
|
data->fan_min[nr] = 255;
|
|
new_div = data->fan_div[nr]; /* No change */
|
|
dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1);
|
|
} else if ((reg = 1350000U / val) >= 128 * 255) {
|
|
/* Speed below this value cannot possibly be represented,
|
|
even with the highest divider (128) */
|
|
data->fan_min[nr] = 254;
|
|
new_div = 7; /* 128 == (1 << 7) */
|
|
dev_warn(dev, "fan%u low limit %u below minimum %u, set to "
|
|
"minimum\n", nr + 1, val, fan_from_reg(254, 128));
|
|
} else if (!reg) {
|
|
/* Speed above this value cannot possibly be represented,
|
|
even with the lowest divider (1) */
|
|
data->fan_min[nr] = 1;
|
|
new_div = 0; /* 1 == (1 << 0) */
|
|
dev_warn(dev, "fan%u low limit %u above maximum %u, set to "
|
|
"maximum\n", nr + 1, val, fan_from_reg(1, 1));
|
|
} else {
|
|
/* Automatically pick the best divider, i.e. the one such
|
|
that the min limit will correspond to a register value
|
|
in the 96..192 range */
|
|
new_div = 0;
|
|
while (reg > 192 && new_div < 7) {
|
|
reg >>= 1;
|
|
new_div++;
|
|
}
|
|
data->fan_min[nr] = reg;
|
|
}
|
|
|
|
/* Write both the fan clock divider (if it changed) and the new
|
|
fan min (unconditionally) */
|
|
if (new_div != data->fan_div[nr]) {
|
|
if (new_div > data->fan_div[nr])
|
|
data->fan[nr] >>= (data->fan_div[nr] - new_div);
|
|
else
|
|
data->fan[nr] <<= (new_div - data->fan_div[nr]);
|
|
|
|
dev_dbg(dev, "fan%u clock divider changed from %u to %u\n",
|
|
nr + 1, div_from_reg(data->fan_div[nr]),
|
|
div_from_reg(new_div));
|
|
data->fan_div[nr] = new_div;
|
|
w83627ehf_write_fan_div(client, nr);
|
|
}
|
|
w83627ehf_write_value(client, W83627EHF_REG_FAN_MIN[nr],
|
|
data->fan_min[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static struct sensor_device_attribute sda_fan_input[] = {
|
|
SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
|
|
SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
|
|
SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
|
|
SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
|
|
SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
|
|
};
|
|
|
|
static struct sensor_device_attribute sda_fan_min[] = {
|
|
SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
|
|
store_fan_min, 0),
|
|
SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
|
|
store_fan_min, 1),
|
|
SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO, show_fan_min,
|
|
store_fan_min, 2),
|
|
SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO, show_fan_min,
|
|
store_fan_min, 3),
|
|
SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO, show_fan_min,
|
|
store_fan_min, 4),
|
|
};
|
|
|
|
static struct sensor_device_attribute sda_fan_div[] = {
|
|
SENSOR_ATTR(fan1_div, S_IRUGO, show_fan_div, NULL, 0),
|
|
SENSOR_ATTR(fan2_div, S_IRUGO, show_fan_div, NULL, 1),
|
|
SENSOR_ATTR(fan3_div, S_IRUGO, show_fan_div, NULL, 2),
|
|
SENSOR_ATTR(fan4_div, S_IRUGO, show_fan_div, NULL, 3),
|
|
SENSOR_ATTR(fan5_div, S_IRUGO, show_fan_div, NULL, 4),
|
|
};
|
|
|
|
static void device_create_file_fan(struct device *dev, int i)
|
|
{
|
|
device_create_file(dev, &sda_fan_input[i].dev_attr);
|
|
device_create_file(dev, &sda_fan_div[i].dev_attr);
|
|
device_create_file(dev, &sda_fan_min[i].dev_attr);
|
|
}
|
|
|
|
#define show_temp1_reg(reg) \
|
|
static ssize_t \
|
|
show_##reg(struct device *dev, struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
struct w83627ehf_data *data = w83627ehf_update_device(dev); \
|
|
return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \
|
|
}
|
|
show_temp1_reg(temp1);
|
|
show_temp1_reg(temp1_max);
|
|
show_temp1_reg(temp1_max_hyst);
|
|
|
|
#define store_temp1_reg(REG, reg) \
|
|
static ssize_t \
|
|
store_temp1_##reg(struct device *dev, struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
struct i2c_client *client = to_i2c_client(dev); \
|
|
struct w83627ehf_data *data = i2c_get_clientdata(client); \
|
|
u32 val = simple_strtoul(buf, NULL, 10); \
|
|
\
|
|
mutex_lock(&data->update_lock); \
|
|
data->temp1_##reg = temp1_to_reg(val); \
|
|
w83627ehf_write_value(client, W83627EHF_REG_TEMP1_##REG, \
|
|
data->temp1_##reg); \
|
|
mutex_unlock(&data->update_lock); \
|
|
return count; \
|
|
}
|
|
store_temp1_reg(OVER, max);
|
|
store_temp1_reg(HYST, max_hyst);
|
|
|
|
#define show_temp_reg(reg) \
|
|
static ssize_t \
|
|
show_##reg(struct device *dev, struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
struct w83627ehf_data *data = w83627ehf_update_device(dev); \
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
|
|
int nr = sensor_attr->index; \
|
|
return sprintf(buf, "%d\n", \
|
|
LM75_TEMP_FROM_REG(data->reg[nr])); \
|
|
}
|
|
show_temp_reg(temp);
|
|
show_temp_reg(temp_max);
|
|
show_temp_reg(temp_max_hyst);
|
|
|
|
#define store_temp_reg(REG, reg) \
|
|
static ssize_t \
|
|
store_##reg(struct device *dev, struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
struct i2c_client *client = to_i2c_client(dev); \
|
|
struct w83627ehf_data *data = i2c_get_clientdata(client); \
|
|
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
|
|
int nr = sensor_attr->index; \
|
|
u32 val = simple_strtoul(buf, NULL, 10); \
|
|
\
|
|
mutex_lock(&data->update_lock); \
|
|
data->reg[nr] = LM75_TEMP_TO_REG(val); \
|
|
w83627ehf_write_value(client, W83627EHF_REG_TEMP_##REG[nr], \
|
|
data->reg[nr]); \
|
|
mutex_unlock(&data->update_lock); \
|
|
return count; \
|
|
}
|
|
store_temp_reg(OVER, temp_max);
|
|
store_temp_reg(HYST, temp_max_hyst);
|
|
|
|
static struct sensor_device_attribute sda_temp[] = {
|
|
SENSOR_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0),
|
|
SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 0),
|
|
SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 1),
|
|
SENSOR_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1_max,
|
|
store_temp1_max, 0),
|
|
SENSOR_ATTR(temp2_max, S_IRUGO | S_IWUSR, show_temp_max,
|
|
store_temp_max, 0),
|
|
SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
|
|
store_temp_max, 1),
|
|
SENSOR_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1_max_hyst,
|
|
store_temp1_max_hyst, 0),
|
|
SENSOR_ATTR(temp2_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
|
|
store_temp_max_hyst, 0),
|
|
SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
|
|
store_temp_max_hyst, 1),
|
|
};
|
|
|
|
/*
|
|
* Driver and client management
|
|
*/
|
|
|
|
static struct i2c_driver w83627ehf_driver;
|
|
|
|
static void w83627ehf_init_client(struct i2c_client *client)
|
|
{
|
|
int i;
|
|
u8 tmp;
|
|
|
|
/* Start monitoring is needed */
|
|
tmp = w83627ehf_read_value(client, W83627EHF_REG_CONFIG);
|
|
if (!(tmp & 0x01))
|
|
w83627ehf_write_value(client, W83627EHF_REG_CONFIG,
|
|
tmp | 0x01);
|
|
|
|
/* Enable temp2 and temp3 if needed */
|
|
for (i = 0; i < 2; i++) {
|
|
tmp = w83627ehf_read_value(client,
|
|
W83627EHF_REG_TEMP_CONFIG[i]);
|
|
if (tmp & 0x01)
|
|
w83627ehf_write_value(client,
|
|
W83627EHF_REG_TEMP_CONFIG[i],
|
|
tmp & 0xfe);
|
|
}
|
|
}
|
|
|
|
static int w83627ehf_detect(struct i2c_adapter *adapter)
|
|
{
|
|
struct i2c_client *client;
|
|
struct w83627ehf_data *data;
|
|
struct device *dev;
|
|
int i, err = 0;
|
|
|
|
if (!request_region(address + REGION_OFFSET, REGION_LENGTH,
|
|
w83627ehf_driver.driver.name)) {
|
|
err = -EBUSY;
|
|
goto exit;
|
|
}
|
|
|
|
if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) {
|
|
err = -ENOMEM;
|
|
goto exit_release;
|
|
}
|
|
|
|
client = &data->client;
|
|
i2c_set_clientdata(client, data);
|
|
client->addr = address;
|
|
mutex_init(&data->lock);
|
|
client->adapter = adapter;
|
|
client->driver = &w83627ehf_driver;
|
|
client->flags = 0;
|
|
dev = &client->dev;
|
|
|
|
strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE);
|
|
data->valid = 0;
|
|
mutex_init(&data->update_lock);
|
|
|
|
/* Tell the i2c layer a new client has arrived */
|
|
if ((err = i2c_attach_client(client)))
|
|
goto exit_free;
|
|
|
|
/* Initialize the chip */
|
|
w83627ehf_init_client(client);
|
|
|
|
/* A few vars need to be filled upon startup */
|
|
for (i = 0; i < 5; i++)
|
|
data->fan_min[i] = w83627ehf_read_value(client,
|
|
W83627EHF_REG_FAN_MIN[i]);
|
|
|
|
/* It looks like fan4 and fan5 pins can be alternatively used
|
|
as fan on/off switches */
|
|
data->has_fan = 0x07; /* fan1, fan2 and fan3 */
|
|
i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1);
|
|
if (i & (1 << 2))
|
|
data->has_fan |= (1 << 3);
|
|
if (i & (1 << 0))
|
|
data->has_fan |= (1 << 4);
|
|
|
|
/* Register sysfs hooks */
|
|
data->class_dev = hwmon_device_register(dev);
|
|
if (IS_ERR(data->class_dev)) {
|
|
err = PTR_ERR(data->class_dev);
|
|
goto exit_detach;
|
|
}
|
|
|
|
for (i = 0; i < 10; i++)
|
|
device_create_file_in(dev, i);
|
|
|
|
for (i = 0; i < 5; i++) {
|
|
if (data->has_fan & (1 << i))
|
|
device_create_file_fan(dev, i);
|
|
}
|
|
for (i = 0; i < ARRAY_SIZE(sda_temp); i++)
|
|
device_create_file(dev, &sda_temp[i].dev_attr);
|
|
|
|
return 0;
|
|
|
|
exit_detach:
|
|
i2c_detach_client(client);
|
|
exit_free:
|
|
kfree(data);
|
|
exit_release:
|
|
release_region(address + REGION_OFFSET, REGION_LENGTH);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
static int w83627ehf_detach_client(struct i2c_client *client)
|
|
{
|
|
struct w83627ehf_data *data = i2c_get_clientdata(client);
|
|
int err;
|
|
|
|
hwmon_device_unregister(data->class_dev);
|
|
|
|
if ((err = i2c_detach_client(client)))
|
|
return err;
|
|
release_region(client->addr + REGION_OFFSET, REGION_LENGTH);
|
|
kfree(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_driver w83627ehf_driver = {
|
|
.driver = {
|
|
.name = "w83627ehf",
|
|
},
|
|
.attach_adapter = w83627ehf_detect,
|
|
.detach_client = w83627ehf_detach_client,
|
|
};
|
|
|
|
static int __init w83627ehf_find(int sioaddr, unsigned short *addr)
|
|
{
|
|
u16 val;
|
|
|
|
REG = sioaddr;
|
|
VAL = sioaddr + 1;
|
|
superio_enter();
|
|
|
|
val = (superio_inb(SIO_REG_DEVID) << 8)
|
|
| superio_inb(SIO_REG_DEVID + 1);
|
|
if ((val & SIO_ID_MASK) != SIO_W83627EHF_ID) {
|
|
superio_exit();
|
|
return -ENODEV;
|
|
}
|
|
|
|
superio_select(W83627EHF_LD_HWM);
|
|
val = (superio_inb(SIO_REG_ADDR) << 8)
|
|
| superio_inb(SIO_REG_ADDR + 1);
|
|
*addr = val & REGION_ALIGNMENT;
|
|
if (*addr == 0) {
|
|
superio_exit();
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Activate logical device if needed */
|
|
val = superio_inb(SIO_REG_ENABLE);
|
|
if (!(val & 0x01))
|
|
superio_outb(SIO_REG_ENABLE, val | 0x01);
|
|
|
|
superio_exit();
|
|
return 0;
|
|
}
|
|
|
|
static int __init sensors_w83627ehf_init(void)
|
|
{
|
|
if (w83627ehf_find(0x2e, &address)
|
|
&& w83627ehf_find(0x4e, &address))
|
|
return -ENODEV;
|
|
|
|
return i2c_isa_add_driver(&w83627ehf_driver);
|
|
}
|
|
|
|
static void __exit sensors_w83627ehf_exit(void)
|
|
{
|
|
i2c_isa_del_driver(&w83627ehf_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
|
|
MODULE_DESCRIPTION("W83627EHF driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sensors_w83627ehf_init);
|
|
module_exit(sensors_w83627ehf_exit);
|