// SPDX-License-Identifier: GPL-2.0-or-later
/*
* vt1211 . c - driver for the VIA VT1211 Super - I / O chip integrated hardware
* monitoring features
* Copyright ( C ) 2006 Juerg Haefliger < juergh @ gmail . com >
*
* This driver is based on the driver for kernel 2 . 4 by Mark D . Studebaker
* and its port to kernel 2 . 6 by Lars Ekman .
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/ioport.h>
#include <linux/acpi.h>
#include <linux/io.h>
static int uch_config = -1 ;
module_param(uch_config, int , 0 );
MODULE_PARM_DESC(uch_config, "Initialize the universal channel configuration" );
static int int_mode = -1 ;
module_param(int_mode, int , 0 );
MODULE_PARM_DESC(int_mode, "Force the temperature interrupt mode" );
static unsigned short force_id;
module_param(force_id, ushort, 0 );
MODULE_PARM_DESC(force_id, "Override the detected device ID" );
static struct platform_device *pdev;
#define DRVNAME "vt1211"
/* ---------------------------------------------------------------------
* Registers
*
* The sensors are defined as follows .
*
* Sensor Voltage Mode Temp Mode Notes ( from the datasheet )
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
* Reading 1 temp1 Intel thermal diode
* Reading 3 temp2 Internal thermal diode
* UCH1 / Reading2 in0 temp3 NTC type thermistor
* UCH2 in1 temp4 + 2 . 5 V
* UCH3 in2 temp5 VccP
* UCH4 in3 temp6 + 5 V
* UCH5 in4 temp7 + 12 V
* 3 . 3 V in5 Internal VDD ( + 3 . 3 V )
*
* --------------------------------------------------------------------- */
/* Voltages (in) numbered 0-5 (ix) */
#define VT1211_REG_IN(ix) (0 x21 + (ix))
#define VT1211_REG_IN_MIN(ix) ((ix) == 0 ? 0 x3e : 0 x2a + 2 * (ix))
#define VT1211_REG_IN_MAX(ix) ((ix) == 0 ? 0 x3d : 0 x29 + 2 * (ix))
/* Temperatures (temp) numbered 0-6 (ix) */
static u8 regtemp[] = {0 x1f, 0 x20, 0 x21, 0 x22, 0 x23, 0 x24, 0 x25};
static u8 regtempmax[] = {0 x39, 0 x1d, 0 x3d, 0 x2b, 0 x2d, 0 x2f, 0 x31};
static u8 regtemphyst[] = {0 x3a, 0 x1e, 0 x3e, 0 x2c, 0 x2e, 0 x30, 0 x32};
/* Fans numbered 0-1 (ix) */
#define VT1211_REG_FAN(ix) (0 x29 + (ix))
#define VT1211_REG_FAN_MIN(ix) (0 x3b + (ix))
#define VT1211_REG_FAN_DIV 0 x47
/* PWMs numbered 0-1 (ix) */
/* Auto points numbered 0-3 (ap) */
#define VT1211_REG_PWM(ix) (0 x60 + (ix))
#define VT1211_REG_PWM_CLK 0 x50
#define VT1211_REG_PWM_CTL 0 x51
#define VT1211_REG_PWM_AUTO_TEMP(ap) (0 x55 - (ap))
#define VT1211_REG_PWM_AUTO_PWM(ix, ap) (0 x58 + 2 * (ix) - (ap))
/* Miscellaneous registers */
#define VT1211_REG_CONFIG 0 x40
#define VT1211_REG_ALARM1 0 x41
#define VT1211_REG_ALARM2 0 x42
#define VT1211_REG_VID 0 x45
#define VT1211_REG_UCH_CONFIG 0 x4a
#define VT1211_REG_TEMP1_CONFIG 0 x4b
#define VT1211_REG_TEMP2_CONFIG 0 x4c
/* In, temp & fan alarm bits */
static const u8 bitalarmin[] = {11 , 0 , 1 , 3 , 8 , 2 , 9 };
static const u8 bitalarmtemp[] = {4 , 15 , 11 , 0 , 1 , 3 , 8 };
static const u8 bitalarmfan[] = {6 , 7 };
/* ---------------------------------------------------------------------
* Data structures and manipulation thereof
* --------------------------------------------------------------------- */
struct vt1211_data {
unsigned short addr;
const char *name;
struct device *hwmon_dev;
struct mutex update_lock;
bool valid; /* true if following fields are valid */
unsigned long last_updated; /* In jiffies */
/* Register values */
u8 in[6 ];
u8 in_max[6 ];
u8 in_min[6 ];
u8 temp[7 ];
u8 temp_max[7 ];
u8 temp_hyst[7 ];
u8 fan[2 ];
u8 fan_min[2 ];
u8 fan_div[2 ];
u8 fan_ctl;
u8 pwm[2 ];
u8 pwm_ctl[2 ];
u8 pwm_clk;
u8 pwm_auto_temp[4 ];
u8 pwm_auto_pwm[2 ][4 ];
u8 vid; /* Read once at init time */
u8 vrm;
u8 uch_config; /* Read once at init time */
u16 alarms;
};
/* ix = [0-5] */
#define ISVOLT(ix, uch_config) ((ix) > 4 ? 1 : \
!(((uch_config) >> ((ix) + 2 )) & 1 ))
/* ix = [0-6] */
#define ISTEMP(ix, uch_config) ((ix) < 2 ? 1 : \
((uch_config) >> (ix)) & 1 )
/*
* in5 ( ix = 5 ) is special . It ' s the internal 3 . 3 V so it ' s scaled in the
* driver according to the VT1211 BIOS porting guide
*/
#define IN_FROM_REG(ix, reg) ((reg) < 3 ? 0 : (ix) == 5 ? \
(((reg) - 3 ) * 15882 + 479 ) / 958 : \
(((reg) - 3 ) * 10000 + 479 ) / 958 )
#define IN_TO_REG(ix, val) (clamp_val((ix) == 5 ? \
((val) * 958 + 7941 ) / 15882 + 3 : \
((val) * 958 + 5000 ) / 10000 + 3 , 0 , 255 ))
/*
* temp1 ( ix = 0 ) is an intel thermal diode which is scaled in user space .
* temp2 ( ix = 1 ) is the internal temp diode so it ' s scaled in the driver
* according to some measurements that I took on an EPIA M10000 .
* temp3 - 7 are thermistor based so the driver returns the voltage measured at
* the pin ( range 0 V - 2 . 2 V ) .
*/
#define TEMP_FROM_REG(ix, reg) ((ix) == 0 ? (reg) * 1000 : \
(ix) == 1 ? (reg) < 51 ? 0 : \
((reg) - 51 ) * 1000 : \
((253 - (reg)) * 2200 + 105 ) / 210 )
#define TEMP_TO_REG(ix, val) clamp_val( \
((ix) == 0 ? ((val) + 500 ) / 1000 : \
(ix) == 1 ? ((val) + 500 ) / 1000 + 51 : \
253 - ((val) * 210 + 1100 ) / 2200 ), 0 , 255 )
#define DIV_FROM_REG(reg) (1 << (reg))
#define RPM_FROM_REG(reg, div) (((reg) == 0 ) || ((reg) == 255 ) ? 0 : \
1310720 / (reg) / DIV_FROM_REG(div))
#define RPM_TO_REG(val, div) ((val) == 0 ? 255 : \
clamp_val((1310720 / (val) / \
DIV_FROM_REG(div)), 1 , 254 ))
/* ---------------------------------------------------------------------
* Super - I / O constants and functions
* --------------------------------------------------------------------- */
/*
* Configuration index port registers
* The vt1211 can live at 2 different addresses so we need to probe both
*/
#define SIO_REG_CIP1 0 x2e
#define SIO_REG_CIP2 0 x4e
/* Configuration registers */
#define SIO_VT1211_LDN 0 x07 /* logical device number */
#define SIO_VT1211_DEVID 0 x20 /* device ID */
#define SIO_VT1211_DEVREV 0 x21 /* device revision */
#define SIO_VT1211_ACTIVE 0 x30 /* HW monitor active */
#define SIO_VT1211_BADDR 0 x60 /* base I/O address */
#define SIO_VT1211_ID 0 x3c /* VT1211 device ID */
/* VT1211 logical device numbers */
#define SIO_VT1211_LDN_HWMON 0 x0b /* HW monitor */
static inline int superio_inb(int sio_cip, int reg)
{
outb(reg, sio_cip);
return inb(sio_cip + 1 );
}
static inline void superio_select(int sio_cip, int ldn)
{
outb(SIO_VT1211_LDN, sio_cip);
outb(ldn, sio_cip + 1 );
}
static inline int superio_enter(int sio_cip)
{
if (!request_muxed_region(sio_cip, 2 , DRVNAME))
return -EBUSY;
outb(0 x87, sio_cip);
outb(0 x87, sio_cip);
return 0 ;
}
static inline void superio_exit(int sio_cip)
{
outb(0 xaa, sio_cip);
release_region(sio_cip, 2 );
}
/* ---------------------------------------------------------------------
* Device I / O access
* --------------------------------------------------------------------- */
static inline u8 vt1211_read8(struct vt1211_data *data, u8 reg)
{
return inb(data->addr + reg);
}
static inline void vt1211_write8(struct vt1211_data *data, u8 reg, u8 val)
{
outb(val, data->addr + reg);
}
static struct vt1211_data *vt1211_update_device(struct device *dev)
{
struct vt1211_data *data = dev_get_drvdata(dev);
int ix, val;
mutex_lock(&data->update_lock);
/* registers cache is refreshed after 1 second */
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
/* read VID */
data->vid = vt1211_read8(data, VT1211_REG_VID) & 0 x1f;
/* voltage (in) registers */
for (ix = 0 ; ix < ARRAY_SIZE(data->in); ix++) {
if (ISVOLT(ix, data->uch_config)) {
data->in[ix] = vt1211_read8(data,
VT1211_REG_IN(ix));
data->in_min[ix] = vt1211_read8(data,
VT1211_REG_IN_MIN(ix));
data->in_max[ix] = vt1211_read8(data,
VT1211_REG_IN_MAX(ix));
}
}
/* temp registers */
for (ix = 0 ; ix < ARRAY_SIZE(data->temp); ix++) {
if (ISTEMP(ix, data->uch_config)) {
data->temp[ix] = vt1211_read8(data,
regtemp[ix]);
data->temp_max[ix] = vt1211_read8(data,
regtempmax[ix]);
data->temp_hyst[ix] = vt1211_read8(data,
regtemphyst[ix]);
}
}
/* fan & pwm registers */
for (ix = 0 ; ix < ARRAY_SIZE(data->fan); ix++) {
data->fan[ix] = vt1211_read8(data,
VT1211_REG_FAN(ix));
data->fan_min[ix] = vt1211_read8(data,
VT1211_REG_FAN_MIN(ix));
data->pwm[ix] = vt1211_read8(data,
VT1211_REG_PWM(ix));
}
val = vt1211_read8(data, VT1211_REG_FAN_DIV);
data->fan_div[0 ] = (val >> 4 ) & 3 ;
data->fan_div[1 ] = (val >> 6 ) & 3 ;
data->fan_ctl = val & 0 xf;
val = vt1211_read8(data, VT1211_REG_PWM_CTL);
data->pwm_ctl[0 ] = val & 0 xf;
data->pwm_ctl[1 ] = (val >> 4 ) & 0 xf;
data->pwm_clk = vt1211_read8(data, VT1211_REG_PWM_CLK);
/* pwm & temp auto point registers */
data->pwm_auto_pwm[0 ][1 ] = vt1211_read8(data,
VT1211_REG_PWM_AUTO_PWM(0 , 1 ));
data->pwm_auto_pwm[0 ][2 ] = vt1211_read8(data,
VT1211_REG_PWM_AUTO_PWM(0 , 2 ));
data->pwm_auto_pwm[1 ][1 ] = vt1211_read8(data,
VT1211_REG_PWM_AUTO_PWM(1 , 1 ));
data->pwm_auto_pwm[1 ][2 ] = vt1211_read8(data,
VT1211_REG_PWM_AUTO_PWM(1 , 2 ));
for (ix = 0 ; ix < ARRAY_SIZE(data->pwm_auto_temp); ix++) {
data->pwm_auto_temp[ix] = vt1211_read8(data,
VT1211_REG_PWM_AUTO_TEMP(ix));
}
/* alarm registers */
data->alarms = (vt1211_read8(data, VT1211_REG_ALARM2) << 8 ) |
vt1211_read8(data, VT1211_REG_ALARM1);
data->last_updated = jiffies;
data->valid = true ;
}
mutex_unlock(&data->update_lock);
return data;
}
/* ---------------------------------------------------------------------
* Voltage sysfs interfaces
* ix = [ 0 - 5 ]
* --------------------------------------------------------------------- */
#define SHOW_IN_INPUT 0
#define SHOW_SET_IN_MIN 1
#define SHOW_SET_IN_MAX 2
#define SHOW_IN_ALARM 3
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct vt1211_data *data = vt1211_update_device(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int res;
switch (fn) {
case SHOW_IN_INPUT:
res = IN_FROM_REG(ix, data->in[ix]);
break ;
case SHOW_SET_IN_MIN:
res = IN_FROM_REG(ix, data->in_min[ix]);
break ;
case SHOW_SET_IN_MAX:
res = IN_FROM_REG(ix, data->in_max[ix]);
break ;
case SHOW_IN_ALARM:
res = (data->alarms >> bitalarmin[ix]) & 1 ;
break ;
default :
res = 0 ;
dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn);
}
return sprintf(buf, "%d\n" , res);
}
static ssize_t set_in(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct vt1211_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
long val;
int err;
err = kstrtol(buf, 10 , &val);
if (err)
return err;
mutex_lock(&data->update_lock);
switch (fn) {
case SHOW_SET_IN_MIN:
data->in_min[ix] = IN_TO_REG(ix, val);
vt1211_write8(data, VT1211_REG_IN_MIN(ix), data->in_min[ix]);
break ;
case SHOW_SET_IN_MAX:
data->in_max[ix] = IN_TO_REG(ix, val);
vt1211_write8(data, VT1211_REG_IN_MAX(ix), data->in_max[ix]);
break ;
default :
dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn);
}
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* Temperature sysfs interfaces
* ix = [ 0 - 6 ]
* --------------------------------------------------------------------- */
#define SHOW_TEMP_INPUT 0
#define SHOW_SET_TEMP_MAX 1
#define SHOW_SET_TEMP_MAX_HYST 2
#define SHOW_TEMP_ALARM 3
static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct vt1211_data *data = vt1211_update_device(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int res;
switch (fn) {
case SHOW_TEMP_INPUT:
res = TEMP_FROM_REG(ix, data->temp[ix]);
break ;
case SHOW_SET_TEMP_MAX:
res = TEMP_FROM_REG(ix, data->temp_max[ix]);
break ;
case SHOW_SET_TEMP_MAX_HYST:
res = TEMP_FROM_REG(ix, data->temp_hyst[ix]);
break ;
case SHOW_TEMP_ALARM:
res = (data->alarms >> bitalarmtemp[ix]) & 1 ;
break ;
default :
res = 0 ;
dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn);
}
return sprintf(buf, "%d\n" , res);
}
static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct vt1211_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
long val;
int err;
err = kstrtol(buf, 10 , &val);
if (err)
return err;
mutex_lock(&data->update_lock);
switch (fn) {
case SHOW_SET_TEMP_MAX:
data->temp_max[ix] = TEMP_TO_REG(ix, val);
vt1211_write8(data, regtempmax[ix],
data->temp_max[ix]);
break ;
case SHOW_SET_TEMP_MAX_HYST:
data->temp_hyst[ix] = TEMP_TO_REG(ix, val);
vt1211_write8(data, regtemphyst[ix],
data->temp_hyst[ix]);
break ;
default :
dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn);
}
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* Fan sysfs interfaces
* ix = [ 0 - 1 ]
* --------------------------------------------------------------------- */
#define SHOW_FAN_INPUT 0
#define SHOW_SET_FAN_MIN 1
#define SHOW_SET_FAN_DIV 2
#define SHOW_FAN_ALARM 3
static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct vt1211_data *data = vt1211_update_device(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int res;
switch (fn) {
case SHOW_FAN_INPUT:
res = RPM_FROM_REG(data->fan[ix], data->fan_div[ix]);
break ;
case SHOW_SET_FAN_MIN:
res = RPM_FROM_REG(data->fan_min[ix], data->fan_div[ix]);
break ;
case SHOW_SET_FAN_DIV:
res = DIV_FROM_REG(data->fan_div[ix]);
break ;
case SHOW_FAN_ALARM:
res = (data->alarms >> bitalarmfan[ix]) & 1 ;
break ;
default :
res = 0 ;
dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn);
}
return sprintf(buf, "%d\n" , res);
}
static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct vt1211_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int reg;
unsigned long val;
int err;
err = kstrtoul(buf, 10 , &val);
if (err)
return err;
mutex_lock(&data->update_lock);
/* sync the data cache */
reg = vt1211_read8(data, VT1211_REG_FAN_DIV);
data->fan_div[0 ] = (reg >> 4 ) & 3 ;
data->fan_div[1 ] = (reg >> 6 ) & 3 ;
data->fan_ctl = reg & 0 xf;
switch (fn) {
case SHOW_SET_FAN_MIN:
data->fan_min[ix] = RPM_TO_REG(val, data->fan_div[ix]);
vt1211_write8(data, VT1211_REG_FAN_MIN(ix),
data->fan_min[ix]);
break ;
case SHOW_SET_FAN_DIV:
switch (val) {
case 1 :
data->fan_div[ix] = 0 ;
break ;
case 2 :
data->fan_div[ix] = 1 ;
break ;
case 4 :
data->fan_div[ix] = 2 ;
break ;
case 8 :
data->fan_div[ix] = 3 ;
break ;
default :
count = -EINVAL;
dev_warn(dev,
"fan div value %ld not supported. Choose one of 1, 2, 4, or 8.\n" ,
val);
goto EXIT ;
}
vt1211_write8(data, VT1211_REG_FAN_DIV,
((data->fan_div[1 ] << 6 ) |
(data->fan_div[0 ] << 4 ) |
data->fan_ctl));
break ;
default :
dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn);
}
EXIT :
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* PWM sysfs interfaces
* ix = [ 0 - 1 ]
* --------------------------------------------------------------------- */
#define SHOW_PWM 0
#define SHOW_SET_PWM_ENABLE 1
#define SHOW_SET_PWM_FREQ 2
#define SHOW_SET_PWM_AUTO_CHANNELS_TEMP 3
static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct vt1211_data *data = vt1211_update_device(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int res;
switch (fn) {
case SHOW_PWM:
res = data->pwm[ix];
break ;
case SHOW_SET_PWM_ENABLE:
res = ((data->pwm_ctl[ix] >> 3 ) & 1 ) ? 2 : 0 ;
break ;
case SHOW_SET_PWM_FREQ:
res = 90000 >> (data->pwm_clk & 7 );
break ;
case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
res = (data->pwm_ctl[ix] & 7 ) + 1 ;
break ;
default :
res = 0 ;
dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn);
}
return sprintf(buf, "%d\n" , res);
}
static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct vt1211_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int tmp, reg;
unsigned long val;
int err;
err = kstrtoul(buf, 10 , &val);
if (err)
return err;
mutex_lock(&data->update_lock);
switch (fn) {
case SHOW_SET_PWM_ENABLE:
/* sync the data cache */
reg = vt1211_read8(data, VT1211_REG_FAN_DIV);
data->fan_div[0 ] = (reg >> 4 ) & 3 ;
data->fan_div[1 ] = (reg >> 6 ) & 3 ;
data->fan_ctl = reg & 0 xf;
reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
data->pwm_ctl[0 ] = reg & 0 xf;
data->pwm_ctl[1 ] = (reg >> 4 ) & 0 xf;
switch (val) {
case 0 :
data->pwm_ctl[ix] &= 7 ;
/*
* disable SmartGuardian if both PWM outputs are
* disabled
*/
if ((data->pwm_ctl[ix ^ 1 ] & 1 ) == 0 )
data->fan_ctl &= 0 xe;
break ;
case 2 :
data->pwm_ctl[ix] |= 8 ;
data->fan_ctl |= 1 ;
break ;
default :
count = -EINVAL;
dev_warn(dev,
"pwm mode %ld not supported. Choose one of 0 or 2.\n" ,
val);
goto EXIT ;
}
vt1211_write8(data, VT1211_REG_PWM_CTL,
((data->pwm_ctl[1 ] << 4 ) |
data->pwm_ctl[0 ]));
vt1211_write8(data, VT1211_REG_FAN_DIV,
((data->fan_div[1 ] << 6 ) |
(data->fan_div[0 ] << 4 ) |
data->fan_ctl));
break ;
case SHOW_SET_PWM_FREQ:
val = 135000 / clamp_val(val, 135000 >> 7 , 135000 );
/* calculate tmp = log2(val) */
tmp = 0 ;
for (val >>= 1 ; val > 0 ; val >>= 1 )
tmp++;
/* sync the data cache */
reg = vt1211_read8(data, VT1211_REG_PWM_CLK);
data->pwm_clk = (reg & 0 xf8) | tmp;
vt1211_write8(data, VT1211_REG_PWM_CLK, data->pwm_clk);
break ;
case SHOW_SET_PWM_AUTO_CHANNELS_TEMP:
if (val < 1 || val > 7 ) {
count = -EINVAL;
dev_warn(dev,
"temp channel %ld not supported. Choose a value between 1 and 7.\n" ,
val);
goto EXIT ;
}
if (!ISTEMP(val - 1 , data->uch_config)) {
count = -EINVAL;
dev_warn(dev, "temp channel %ld is not available.\n" ,
val);
goto EXIT ;
}
/* sync the data cache */
reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
data->pwm_ctl[0 ] = reg & 0 xf;
data->pwm_ctl[1 ] = (reg >> 4 ) & 0 xf;
data->pwm_ctl[ix] = (data->pwm_ctl[ix] & 8 ) | (val - 1 );
vt1211_write8(data, VT1211_REG_PWM_CTL,
((data->pwm_ctl[1 ] << 4 ) | data->pwm_ctl[0 ]));
break ;
default :
dev_dbg(dev, "Unknown attr fetch (%d)\n" , fn);
}
EXIT :
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* PWM auto point definitions
* ix = [ 0 - 1 ]
* ap = [ 0 - 3 ]
* --------------------------------------------------------------------- */
/*
* pwm [ ix + 1 ] _ auto_point [ ap + 1 ] _ temp mapping table :
* Note that there is only a single set of temp auto points that controls both
* PWM controllers . We still create 2 sets of sysfs files to make it look
* more consistent even though they map to the same registers .
*
* ix ap : description
* - - - - - - - - - - - - - - - - - - -
* 0 0 : pwm1 / 2 off temperature ( pwm_auto_temp [ 0 ] )
* 0 1 : pwm1 / 2 low speed temperature ( pwm_auto_temp [ 1 ] )
* 0 2 : pwm1 / 2 high speed temperature ( pwm_auto_temp [ 2 ] )
* 0 3 : pwm1 / 2 full speed temperature ( pwm_auto_temp [ 3 ] )
* 1 0 : pwm1 / 2 off temperature ( pwm_auto_temp [ 0 ] )
* 1 1 : pwm1 / 2 low speed temperature ( pwm_auto_temp [ 1 ] )
* 1 2 : pwm1 / 2 high speed temperature ( pwm_auto_temp [ 2 ] )
* 1 3 : pwm1 / 2 full speed temperature ( pwm_auto_temp [ 3 ] )
*/
static ssize_t show_pwm_auto_point_temp(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct vt1211_data *data = vt1211_update_device(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int ap = sensor_attr_2->nr;
return sprintf(buf, "%d\n" , TEMP_FROM_REG(data->pwm_ctl[ix] & 7 ,
data->pwm_auto_temp[ap]));
}
static ssize_t set_pwm_auto_point_temp(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct vt1211_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int ap = sensor_attr_2->nr;
int reg;
long val;
int err;
err = kstrtol(buf, 10 , &val);
if (err)
return err;
mutex_lock(&data->update_lock);
/* sync the data cache */
reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
data->pwm_ctl[0 ] = reg & 0 xf;
data->pwm_ctl[1 ] = (reg >> 4 ) & 0 xf;
data->pwm_auto_temp[ap] = TEMP_TO_REG(data->pwm_ctl[ix] & 7 , val);
vt1211_write8(data, VT1211_REG_PWM_AUTO_TEMP(ap),
data->pwm_auto_temp[ap]);
mutex_unlock(&data->update_lock);
return count;
}
/*
* pwm [ ix + 1 ] _ auto_point [ ap + 1 ] _ pwm mapping table :
* Note that the PWM auto points 0 & 3 are hard - wired in the VT1211 and can ' t
* be changed .
*
* ix ap : description
* - - - - - - - - - - - - - - - - - - -
* 0 0 : pwm1 off ( pwm_auto_pwm [ 0 ] [ 0 ] , hard - wired to 0 )
* 0 1 : pwm1 low speed duty cycle ( pwm_auto_pwm [ 0 ] [ 1 ] )
* 0 2 : pwm1 high speed duty cycle ( pwm_auto_pwm [ 0 ] [ 2 ] )
* 0 3 : pwm1 full speed ( pwm_auto_pwm [ 0 ] [ 3 ] , hard - wired to 255 )
* 1 0 : pwm2 off ( pwm_auto_pwm [ 1 ] [ 0 ] , hard - wired to 0 )
* 1 1 : pwm2 low speed duty cycle ( pwm_auto_pwm [ 1 ] [ 1 ] )
* 1 2 : pwm2 high speed duty cycle ( pwm_auto_pwm [ 1 ] [ 2 ] )
* 1 3 : pwm2 full speed ( pwm_auto_pwm [ 1 ] [ 3 ] , hard - wired to 255 )
*/
static ssize_t show_pwm_auto_point_pwm(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct vt1211_data *data = vt1211_update_device(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int ap = sensor_attr_2->nr;
return sprintf(buf, "%d\n" , data->pwm_auto_pwm[ix][ap]);
}
static ssize_t set_pwm_auto_point_pwm(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct vt1211_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2 *sensor_attr_2 =
to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int ap = sensor_attr_2->nr;
unsigned long val;
int err;
err = kstrtoul(buf, 10 , &val);
if (err)
return err;
mutex_lock(&data->update_lock);
data->pwm_auto_pwm[ix][ap] = clamp_val(val, 0 , 255 );
vt1211_write8(data, VT1211_REG_PWM_AUTO_PWM(ix, ap),
data->pwm_auto_pwm[ix][ap]);
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* Miscellaneous sysfs interfaces ( VRM , VID , name , and ( legacy ) alarms )
* --------------------------------------------------------------------- */
static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct vt1211_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n" , data->vrm);
}
static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct vt1211_data *data = dev_get_drvdata(dev);
unsigned long val;
int err;
err = kstrtoul(buf, 10 , &val);
if (err)
return err;
if (val > 255 )
return -EINVAL;
data->vrm = val;
return count;
}
static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct vt1211_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n" , vid_from_reg(data->vid, data->vrm));
}
static ssize_t show_name(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct vt1211_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%s\n" , data->name);
}
static ssize_t show_alarms(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct vt1211_data *data = vt1211_update_device(dev);
return sprintf(buf, "%d\n" , data->alarms);
}
/* ---------------------------------------------------------------------
* Device attribute structs
* --------------------------------------------------------------------- */
#define SENSOR_ATTR_IN(ix) \
{ SENSOR_ATTR_2(in## ix## _input, S_IRUGO, \
show_in, NULL, SHOW_IN_INPUT, ix), \
SENSOR_ATTR_2(in## ix## _min, S_IRUGO | S_IWUSR, \
show_in, set_in, SHOW_SET_IN_MIN, ix), \
SENSOR_ATTR_2(in## ix## _max, S_IRUGO | S_IWUSR, \
show_in, set_in, SHOW_SET_IN_MAX, ix), \
SENSOR_ATTR_2(in## ix## _alarm, S_IRUGO, \
show_in, NULL, SHOW_IN_ALARM, ix) \
}
static struct sensor_device_attribute_2 vt1211_sysfs_in[][4 ] = {
SENSOR_ATTR_IN(0 ),
SENSOR_ATTR_IN(1 ),
SENSOR_ATTR_IN(2 ),
SENSOR_ATTR_IN(3 ),
SENSOR_ATTR_IN(4 ),
SENSOR_ATTR_IN(5 )
};
#define IN_UNIT_ATTRS(X) \
{ &vt1211_sysfs_in[X][0 ].dev_attr.attr, \
&vt1211_sysfs_in[X][1 ].dev_attr.attr, \
&vt1211_sysfs_in[X][2 ].dev_attr.attr, \
&vt1211_sysfs_in[X][3 ].dev_attr.attr, \
NULL \
}
static struct attribute *vt1211_in_attr[][5 ] = {
IN_UNIT_ATTRS(0 ),
IN_UNIT_ATTRS(1 ),
IN_UNIT_ATTRS(2 ),
IN_UNIT_ATTRS(3 ),
IN_UNIT_ATTRS(4 ),
IN_UNIT_ATTRS(5 )
};
static const struct attribute_group vt1211_in_attr_group[] = {
{ .attrs = vt1211_in_attr[0 ] },
{ .attrs = vt1211_in_attr[1 ] },
{ .attrs = vt1211_in_attr[2 ] },
{ .attrs = vt1211_in_attr[3 ] },
{ .attrs = vt1211_in_attr[4 ] },
{ .attrs = vt1211_in_attr[5 ] }
};
#define SENSOR_ATTR_TEMP(ix) \
{ SENSOR_ATTR_2(temp## ix## _input, S_IRUGO, \
show_temp, NULL, SHOW_TEMP_INPUT, ix-1 ), \
SENSOR_ATTR_2(temp## ix## _max, S_IRUGO | S_IWUSR, \
show_temp, set_temp, SHOW_SET_TEMP_MAX, ix-1 ), \
SENSOR_ATTR_2(temp## ix## _max_hyst, S_IRUGO | S_IWUSR, \
show_temp, set_temp, SHOW_SET_TEMP_MAX_HYST, ix-1 ), \
SENSOR_ATTR_2(temp## ix## _alarm, S_IRUGO, \
show_temp, NULL, SHOW_TEMP_ALARM, ix-1 ) \
}
static struct sensor_device_attribute_2 vt1211_sysfs_temp[][4 ] = {
SENSOR_ATTR_TEMP(1 ),
SENSOR_ATTR_TEMP(2 ),
SENSOR_ATTR_TEMP(3 ),
SENSOR_ATTR_TEMP(4 ),
SENSOR_ATTR_TEMP(5 ),
SENSOR_ATTR_TEMP(6 ),
SENSOR_ATTR_TEMP(7 ),
};
#define TEMP_UNIT_ATTRS(X) \
{ &vt1211_sysfs_temp[X][0 ].dev_attr.attr, \
&vt1211_sysfs_temp[X][1 ].dev_attr.attr, \
&vt1211_sysfs_temp[X][2 ].dev_attr.attr, \
&vt1211_sysfs_temp[X][3 ].dev_attr.attr, \
NULL \
}
static struct attribute *vt1211_temp_attr[][5 ] = {
TEMP_UNIT_ATTRS(0 ),
TEMP_UNIT_ATTRS(1 ),
TEMP_UNIT_ATTRS(2 ),
TEMP_UNIT_ATTRS(3 ),
TEMP_UNIT_ATTRS(4 ),
TEMP_UNIT_ATTRS(5 ),
TEMP_UNIT_ATTRS(6 )
};
static const struct attribute_group vt1211_temp_attr_group[] = {
{ .attrs = vt1211_temp_attr[0 ] },
{ .attrs = vt1211_temp_attr[1 ] },
{ .attrs = vt1211_temp_attr[2 ] },
{ .attrs = vt1211_temp_attr[3 ] },
{ .attrs = vt1211_temp_attr[4 ] },
{ .attrs = vt1211_temp_attr[5 ] },
{ .attrs = vt1211_temp_attr[6 ] }
};
#define SENSOR_ATTR_FAN(ix) \
SENSOR_ATTR_2(fan## ix## _input, S_IRUGO, \
show_fan, NULL, SHOW_FAN_INPUT, ix-1 ), \
SENSOR_ATTR_2(fan## ix## _min, S_IRUGO | S_IWUSR, \
show_fan, set_fan, SHOW_SET_FAN_MIN, ix-1 ), \
SENSOR_ATTR_2(fan## ix## _div, S_IRUGO | S_IWUSR, \
show_fan, set_fan, SHOW_SET_FAN_DIV, ix-1 ), \
SENSOR_ATTR_2(fan## ix## _alarm, S_IRUGO, \
show_fan, NULL, SHOW_FAN_ALARM, ix-1 )
#define SENSOR_ATTR_PWM(ix) \
SENSOR_ATTR_2(pwm## ix, S_IRUGO, \
show_pwm, NULL, SHOW_PWM, ix-1 ), \
SENSOR_ATTR_2(pwm## ix## _enable, S_IRUGO | S_IWUSR, \
show_pwm, set_pwm, SHOW_SET_PWM_ENABLE, ix-1 ), \
SENSOR_ATTR_2(pwm## ix## _auto_channels_temp, S_IRUGO | S_IWUSR, \
show_pwm, set_pwm, SHOW_SET_PWM_AUTO_CHANNELS_TEMP, ix-1 )
#define SENSOR_ATTR_PWM_FREQ(ix) \
SENSOR_ATTR_2(pwm## ix## _freq, S_IRUGO | S_IWUSR, \
show_pwm, set_pwm, SHOW_SET_PWM_FREQ, ix-1 )
#define SENSOR_ATTR_PWM_FREQ_RO(ix) \
SENSOR_ATTR_2(pwm## ix## _freq, S_IRUGO, \
show_pwm, NULL, SHOW_SET_PWM_FREQ, ix-1 )
#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP(ix, ap) \
SENSOR_ATTR_2(pwm## ix## _auto_point## ap## _temp, S_IRUGO | S_IWUSR, \
show_pwm_auto_point_temp, set_pwm_auto_point_temp, \
ap-1 , ix-1 )
#define SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(ix, ap) \
SENSOR_ATTR_2(pwm## ix## _auto_point## ap## _temp, S_IRUGO, \
show_pwm_auto_point_temp, NULL, \
ap-1 , ix-1 )
#define SENSOR_ATTR_PWM_AUTO_POINT_PWM(ix, ap) \
SENSOR_ATTR_2(pwm## ix## _auto_point## ap## _pwm, S_IRUGO | S_IWUSR, \
show_pwm_auto_point_pwm, set_pwm_auto_point_pwm, \
ap-1 , ix-1 )
#define SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(ix, ap) \
SENSOR_ATTR_2(pwm## ix## _auto_point## ap## _pwm, S_IRUGO, \
show_pwm_auto_point_pwm, NULL, \
ap-1 , ix-1 )
static struct sensor_device_attribute_2 vt1211_sysfs_fan_pwm[] = {
SENSOR_ATTR_FAN(1 ),
SENSOR_ATTR_FAN(2 ),
SENSOR_ATTR_PWM(1 ),
SENSOR_ATTR_PWM(2 ),
SENSOR_ATTR_PWM_FREQ(1 ),
SENSOR_ATTR_PWM_FREQ_RO(2 ),
SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1 , 1 ),
SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1 , 2 ),
SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1 , 3 ),
SENSOR_ATTR_PWM_AUTO_POINT_TEMP(1 , 4 ),
SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2 , 1 ),
SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2 , 2 ),
SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2 , 3 ),
SENSOR_ATTR_PWM_AUTO_POINT_TEMP_RO(2 , 4 ),
SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1 , 1 ),
SENSOR_ATTR_PWM_AUTO_POINT_PWM(1 , 2 ),
SENSOR_ATTR_PWM_AUTO_POINT_PWM(1 , 3 ),
SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(1 , 4 ),
SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2 , 1 ),
SENSOR_ATTR_PWM_AUTO_POINT_PWM(2 , 2 ),
SENSOR_ATTR_PWM_AUTO_POINT_PWM(2 , 3 ),
SENSOR_ATTR_PWM_AUTO_POINT_PWM_RO(2 , 4 ),
};
static struct device_attribute vt1211_sysfs_misc[] = {
__ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm),
__ATTR(cpu0_vid, S_IRUGO, show_vid, NULL),
__ATTR(name, S_IRUGO, show_name, NULL),
__ATTR(alarms, S_IRUGO, show_alarms, NULL),
};
/* ---------------------------------------------------------------------
* Device registration and initialization
* --------------------------------------------------------------------- */
static void vt1211_init_device(struct vt1211_data *data)
{
/* set VRM */
data->vrm = vid_which_vrm();
/* Read (and initialize) UCH config */
data->uch_config = vt1211_read8(data, VT1211_REG_UCH_CONFIG);
if (uch_config > -1 ) {
data->uch_config = (data->uch_config & 0 x83) |
(uch_config << 2 );
vt1211_write8(data, VT1211_REG_UCH_CONFIG, data->uch_config);
}
/*
* Initialize the interrupt mode ( if request at module load time ) .
* The VT1211 implements 3 different modes for clearing interrupts :
* 0 : Clear INT when status register is read . Regenerate INT as long
* as temp stays above hysteresis limit .
* 1 : Clear INT when status register is read . DON ' T regenerate INT
* until temp falls below hysteresis limit and exceeds hot limit
* again .
* 2 : Clear INT when temp falls below max limit .
*
* The driver only allows to force mode 0 since that ' s the only one
* that makes sense for ' sensors '
*/
if (int_mode == 0 ) {
vt1211_write8(data, VT1211_REG_TEMP1_CONFIG, 0 );
vt1211_write8(data, VT1211_REG_TEMP2_CONFIG, 0 );
}
/* Fill in some hard wired values into our data struct */
data->pwm_auto_pwm[0 ][3 ] = 255 ;
data->pwm_auto_pwm[1 ][3 ] = 255 ;
}
static void vt1211_remove_sysfs(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
int i;
for (i = 0 ; i < ARRAY_SIZE(vt1211_in_attr_group); i++)
sysfs_remove_group(&dev->kobj, &vt1211_in_attr_group[i]);
for (i = 0 ; i < ARRAY_SIZE(vt1211_temp_attr_group); i++)
sysfs_remove_group(&dev->kobj, &vt1211_temp_attr_group[i]);
for (i = 0 ; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) {
device_remove_file(dev,
&vt1211_sysfs_fan_pwm[i].dev_attr);
}
for (i = 0 ; i < ARRAY_SIZE(vt1211_sysfs_misc); i++)
device_remove_file(dev, &vt1211_sysfs_misc[i]);
}
static int vt1211_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct vt1211_data *data;
struct resource *res;
int i, err;
data = devm_kzalloc(dev, sizeof (struct vt1211_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_IO, 0 );
if (!devm_request_region(dev, res->start, resource_size(res),
DRVNAME)) {
dev_err(dev, "Failed to request region 0x%lx-0x%lx\n" ,
(unsigned long )res->start, (unsigned long )res->end);
return -EBUSY;
}
data->addr = res->start;
data->name = DRVNAME;
mutex_init(&data->update_lock);
platform_set_drvdata(pdev, data);
/* Initialize the VT1211 chip */
vt1211_init_device(data);
/* Create sysfs interface files */
for (i = 0 ; i < ARRAY_SIZE(vt1211_in_attr_group); i++) {
if (ISVOLT(i, data->uch_config)) {
err = sysfs_create_group(&dev->kobj,
&vt1211_in_attr_group[i]);
if (err)
goto EXIT_DEV_REMOVE;
}
}
for (i = 0 ; i < ARRAY_SIZE(vt1211_temp_attr_group); i++) {
if (ISTEMP(i, data->uch_config)) {
err = sysfs_create_group(&dev->kobj,
&vt1211_temp_attr_group[i]);
if (err)
goto EXIT_DEV_REMOVE;
}
}
for (i = 0 ; i < ARRAY_SIZE(vt1211_sysfs_fan_pwm); i++) {
err = device_create_file(dev,
&vt1211_sysfs_fan_pwm[i].dev_attr);
if (err)
goto EXIT_DEV_REMOVE;
}
for (i = 0 ; i < ARRAY_SIZE(vt1211_sysfs_misc); i++) {
err = device_create_file(dev,
&vt1211_sysfs_misc[i]);
if (err)
goto EXIT_DEV_REMOVE;
}
/* Register device */
data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
dev_err(dev, "Class registration failed (%d)\n" , err);
goto EXIT_DEV_REMOVE_SILENT;
}
return 0 ;
EXIT_DEV_REMOVE:
dev_err(dev, "Sysfs interface creation failed (%d)\n" , err);
EXIT_DEV_REMOVE_SILENT:
vt1211_remove_sysfs(pdev);
return err;
}
static void vt1211_remove(struct platform_device *pdev)
{
struct vt1211_data *data = platform_get_drvdata(pdev);
hwmon_device_unregister(data->hwmon_dev);
vt1211_remove_sysfs(pdev);
}
static struct platform_driver vt1211_driver = {
.driver = {
.name = DRVNAME,
},
.probe = vt1211_probe,
.remove = vt1211_remove,
};
static int __init vt1211_device_add(unsigned short address)
{
struct resource res = {
.start = address,
.end = address + 0 x7f,
.flags = IORESOURCE_IO,
};
int err;
pdev = platform_device_alloc(DRVNAME, address);
if (!pdev) {
err = -ENOMEM;
pr_err("Device allocation failed (%d)\n" , err);
goto EXIT ;
}
res.name = pdev->name;
err = acpi_check_resource_conflict(&res);
if (err)
goto EXIT_DEV_PUT;
err = platform_device_add_resources(pdev, &res, 1 );
if (err) {
pr_err("Device resource addition failed (%d)\n" , err);
goto EXIT_DEV_PUT;
}
err = platform_device_add(pdev);
if (err) {
pr_err("Device addition failed (%d)\n" , err);
goto EXIT_DEV_PUT;
}
return 0 ;
EXIT_DEV_PUT:
platform_device_put(pdev);
EXIT :
return err;
}
static int __init vt1211_find(int sio_cip, unsigned short *address)
{
int err;
int devid;
err = superio_enter(sio_cip);
if (err)
return err;
err = -ENODEV;
devid = force_id ? force_id : superio_inb(sio_cip, SIO_VT1211_DEVID);
if (devid != SIO_VT1211_ID)
goto EXIT ;
superio_select(sio_cip, SIO_VT1211_LDN_HWMON);
if ((superio_inb(sio_cip, SIO_VT1211_ACTIVE) & 1 ) == 0 ) {
pr_warn("HW monitor is disabled, skipping\n" );
goto EXIT ;
}
*address = ((superio_inb(sio_cip, SIO_VT1211_BADDR) << 8 ) |
(superio_inb(sio_cip, SIO_VT1211_BADDR + 1 ))) & 0 xff00;
if (*address == 0 ) {
pr_warn("Base address is not set, skipping\n" );
goto EXIT ;
}
err = 0 ;
pr_info("Found VT1211 chip at 0x%04x, revision %u\n" ,
*address, superio_inb(sio_cip, SIO_VT1211_DEVREV));
EXIT :
superio_exit(sio_cip);
return err;
}
static int __init vt1211_init(void )
{
int err;
unsigned short address = 0 ;
err = vt1211_find(SIO_REG_CIP1, &address);
if (err) {
err = vt1211_find(SIO_REG_CIP2, &address);
if (err)
goto EXIT ;
}
if ((uch_config < -1 ) || (uch_config > 31 )) {
err = -EINVAL;
pr_warn("Invalid UCH configuration %d. Choose a value between 0 and 31.\n" ,
uch_config);
goto EXIT ;
}
if ((int_mode < -1 ) || (int_mode > 0 )) {
err = -EINVAL;
pr_warn("Invalid interrupt mode %d. Only mode 0 is supported.\n" ,
int_mode);
goto EXIT ;
}
err = platform_driver_register(&vt1211_driver);
if (err)
goto EXIT ;
/* Sets global pdev as a side effect */
err = vt1211_device_add(address);
if (err)
goto EXIT_DRV_UNREGISTER;
return 0 ;
EXIT_DRV_UNREGISTER:
platform_driver_unregister(&vt1211_driver);
EXIT :
return err;
}
static void __exit vt1211_exit(void )
{
platform_device_unregister(pdev);
platform_driver_unregister(&vt1211_driver);
}
MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>" );
MODULE_DESCRIPTION("VT1211 sensors" );
MODULE_LICENSE("GPL" );
module_init(vt1211_init);
module_exit(vt1211_exit);
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¤ Dauer der Verarbeitung: 0.20 Sekunden
(vorverarbeitet am 2026-09-28)
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