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w83792d.c
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/*
w83792d.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (C) 2004, 2005 Winbond Electronics Corp.
Chunhao Huang <DZShen@Winbond.com.tw>,
Rudolf Marek <r.marek@assembler.cz>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Note:
1. This driver is only for 2.6 kernel, 2.4 kernel need a different driver.
2. This driver is only for Winbond W83792D C version device, there
are also some motherboards with B version W83792D device. The
calculation method to in6-in7(measured value, limits) is a little
different between C and B version. C or B version can be identified
by CR[0x49h].
*/
/*
Supports following chips:
Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
w83792d 9 7 7 3 0x7a 0x5ca3 yes no
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/sysfs.h>
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
/* Insmod parameters */
I2C_CLIENT_INSMOD_1(w83792d);
I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
"{bus, clientaddr, subclientaddr1, subclientaddr2}");
static int init;
module_param(init, bool, 0);
MODULE_PARM_DESC(init, "Set to one to force chip initialization");
/* The W83792D registers */
static const u8 W83792D_REG_IN[9] = {
0x20, /* Vcore A in DataSheet */
0x21, /* Vcore B in DataSheet */
0x22, /* VIN0 in DataSheet */
0x23, /* VIN1 in DataSheet */
0x24, /* VIN2 in DataSheet */
0x25, /* VIN3 in DataSheet */
0x26, /* 5VCC in DataSheet */
0xB0, /* 5VSB in DataSheet */
0xB1 /* VBAT in DataSheet */
};
#define W83792D_REG_LOW_BITS1 0x3E /* Low Bits I in DataSheet */
#define W83792D_REG_LOW_BITS2 0x3F /* Low Bits II in DataSheet */
static const u8 W83792D_REG_IN_MAX[9] = {
0x2B, /* Vcore A High Limit in DataSheet */
0x2D, /* Vcore B High Limit in DataSheet */
0x2F, /* VIN0 High Limit in DataSheet */
0x31, /* VIN1 High Limit in DataSheet */
0x33, /* VIN2 High Limit in DataSheet */
0x35, /* VIN3 High Limit in DataSheet */
0x37, /* 5VCC High Limit in DataSheet */
0xB4, /* 5VSB High Limit in DataSheet */
0xB6 /* VBAT High Limit in DataSheet */
};
static const u8 W83792D_REG_IN_MIN[9] = {
0x2C, /* Vcore A Low Limit in DataSheet */
0x2E, /* Vcore B Low Limit in DataSheet */
0x30, /* VIN0 Low Limit in DataSheet */
0x32, /* VIN1 Low Limit in DataSheet */
0x34, /* VIN2 Low Limit in DataSheet */
0x36, /* VIN3 Low Limit in DataSheet */
0x38, /* 5VCC Low Limit in DataSheet */
0xB5, /* 5VSB Low Limit in DataSheet */
0xB7 /* VBAT Low Limit in DataSheet */
};
static const u8 W83792D_REG_FAN[7] = {
0x28, /* FAN 1 Count in DataSheet */
0x29, /* FAN 2 Count in DataSheet */
0x2A, /* FAN 3 Count in DataSheet */
0xB8, /* FAN 4 Count in DataSheet */
0xB9, /* FAN 5 Count in DataSheet */
0xBA, /* FAN 6 Count in DataSheet */
0xBE /* FAN 7 Count in DataSheet */
};
static const u8 W83792D_REG_FAN_MIN[7] = {
0x3B, /* FAN 1 Count Low Limit in DataSheet */
0x3C, /* FAN 2 Count Low Limit in DataSheet */
0x3D, /* FAN 3 Count Low Limit in DataSheet */
0xBB, /* FAN 4 Count Low Limit in DataSheet */
0xBC, /* FAN 5 Count Low Limit in DataSheet */
0xBD, /* FAN 6 Count Low Limit in DataSheet */
0xBF /* FAN 7 Count Low Limit in DataSheet */
};
#define W83792D_REG_FAN_CFG 0x84 /* FAN Configuration in DataSheet */
static const u8 W83792D_REG_FAN_DIV[4] = {
0x47, /* contains FAN2 and FAN1 Divisor */
0x5B, /* contains FAN4 and FAN3 Divisor */
0x5C, /* contains FAN6 and FAN5 Divisor */
0x9E /* contains FAN7 Divisor. */
};
static const u8 W83792D_REG_PWM[7] = {
0x81, /* FAN 1 Duty Cycle, be used to control */
0x83, /* FAN 2 Duty Cycle, be used to control */
0x94, /* FAN 3 Duty Cycle, be used to control */
0xA3, /* FAN 4 Duty Cycle, be used to control */
0xA4, /* FAN 5 Duty Cycle, be used to control */
0xA5, /* FAN 6 Duty Cycle, be used to control */
0xA6 /* FAN 7 Duty Cycle, be used to control */
};
#define W83792D_REG_BANK 0x4E
#define W83792D_REG_TEMP2_CONFIG 0xC2
#define W83792D_REG_TEMP3_CONFIG 0xCA
static const u8 W83792D_REG_TEMP1[3] = {
0x27, /* TEMP 1 in DataSheet */
0x39, /* TEMP 1 Over in DataSheet */
0x3A, /* TEMP 1 Hyst in DataSheet */
};
static const u8 W83792D_REG_TEMP_ADD[2][6] = {
{ 0xC0, /* TEMP 2 in DataSheet */
0xC1, /* TEMP 2(0.5 deg) in DataSheet */
0xC5, /* TEMP 2 Over High part in DataSheet */
0xC6, /* TEMP 2 Over Low part in DataSheet */
0xC3, /* TEMP 2 Thyst High part in DataSheet */
0xC4 }, /* TEMP 2 Thyst Low part in DataSheet */
{ 0xC8, /* TEMP 3 in DataSheet */
0xC9, /* TEMP 3(0.5 deg) in DataSheet */
0xCD, /* TEMP 3 Over High part in DataSheet */
0xCE, /* TEMP 3 Over Low part in DataSheet */
0xCB, /* TEMP 3 Thyst High part in DataSheet */
0xCC } /* TEMP 3 Thyst Low part in DataSheet */
};
static const u8 W83792D_REG_THERMAL[3] = {
0x85, /* SmartFanI: Fan1 target value */
0x86, /* SmartFanI: Fan2 target value */
0x96 /* SmartFanI: Fan3 target value */
};
static const u8 W83792D_REG_TOLERANCE[3] = {
0x87, /* (bit3-0)SmartFan Fan1 tolerance */
0x87, /* (bit7-4)SmartFan Fan2 tolerance */
0x97 /* (bit3-0)SmartFan Fan3 tolerance */
};
static const u8 W83792D_REG_POINTS[3][4] = {
{ 0x85, /* SmartFanII: Fan1 temp point 1 */
0xE3, /* SmartFanII: Fan1 temp point 2 */
0xE4, /* SmartFanII: Fan1 temp point 3 */
0xE5 }, /* SmartFanII: Fan1 temp point 4 */
{ 0x86, /* SmartFanII: Fan2 temp point 1 */
0xE6, /* SmartFanII: Fan2 temp point 2 */
0xE7, /* SmartFanII: Fan2 temp point 3 */
0xE8 }, /* SmartFanII: Fan2 temp point 4 */
{ 0x96, /* SmartFanII: Fan3 temp point 1 */
0xE9, /* SmartFanII: Fan3 temp point 2 */
0xEA, /* SmartFanII: Fan3 temp point 3 */
0xEB } /* SmartFanII: Fan3 temp point 4 */
};
static const u8 W83792D_REG_LEVELS[3][4] = {
{ 0x88, /* (bit3-0) SmartFanII: Fan1 Non-Stop */
0x88, /* (bit7-4) SmartFanII: Fan1 Level 1 */
0xE0, /* (bit7-4) SmartFanII: Fan1 Level 2 */
0xE0 }, /* (bit3-0) SmartFanII: Fan1 Level 3 */
{ 0x89, /* (bit3-0) SmartFanII: Fan2 Non-Stop */
0x89, /* (bit7-4) SmartFanII: Fan2 Level 1 */
0xE1, /* (bit7-4) SmartFanII: Fan2 Level 2 */
0xE1 }, /* (bit3-0) SmartFanII: Fan2 Level 3 */
{ 0x98, /* (bit3-0) SmartFanII: Fan3 Non-Stop */
0x98, /* (bit7-4) SmartFanII: Fan3 Level 1 */
0xE2, /* (bit7-4) SmartFanII: Fan3 Level 2 */
0xE2 } /* (bit3-0) SmartFanII: Fan3 Level 3 */
};
#define W83792D_REG_GPIO_EN 0x1A
#define W83792D_REG_CONFIG 0x40
#define W83792D_REG_VID_FANDIV 0x47
#define W83792D_REG_CHIPID 0x49
#define W83792D_REG_WCHIPID 0x58
#define W83792D_REG_CHIPMAN 0x4F
#define W83792D_REG_PIN 0x4B
#define W83792D_REG_I2C_SUBADDR 0x4A
#define W83792D_REG_ALARM1 0xA9 /* realtime status register1 */
#define W83792D_REG_ALARM2 0xAA /* realtime status register2 */
#define W83792D_REG_ALARM3 0xAB /* realtime status register3 */
#define W83792D_REG_CHASSIS 0x42 /* Bit 5: Case Open status bit */
#define W83792D_REG_CHASSIS_CLR 0x44 /* Bit 7: Case Open CLR_CHS/Reset bit */
/* control in0/in1 's limit modifiability */
#define W83792D_REG_VID_IN_B 0x17
#define W83792D_REG_VBAT 0x5D
#define W83792D_REG_I2C_ADDR 0x48
/* Conversions. Rounding and limit checking is only done on the TO_REG
variants. Note that you should be a bit careful with which arguments
these macros are called: arguments may be evaluated more than once.
Fixing this is just not worth it. */
#define IN_FROM_REG(nr,val) (((nr)<=1)?(val*2): \
((((nr)==6)||((nr)==7))?(val*6):(val*4)))
#define IN_TO_REG(nr,val) (((nr)<=1)?(val/2): \
((((nr)==6)||((nr)==7))?(val/6):(val/4)))
static inline u8
FAN_TO_REG(long rpm, int div)
{
if (rpm == 0)
return 255;
rpm = SENSORS_LIMIT(rpm, 1, 1000000);
return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
}
#define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \
((val) == 255 ? 0 : \
1350000 / ((val) * (div))))
/* for temp1 */
#define TEMP1_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
: (val)) / 1000, 0, 0xff))
#define TEMP1_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
/* for temp2 and temp3, because they need addtional resolution */
#define TEMP_ADD_FROM_REG(val1, val2) \
((((val1) & 0x80 ? (val1)-0x100 \
: (val1)) * 1000) + ((val2 & 0x80) ? 500 : 0))
#define TEMP_ADD_TO_REG_HIGH(val) \
(SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
: (val)) / 1000, 0, 0xff))
#define TEMP_ADD_TO_REG_LOW(val) ((val%1000) ? 0x80 : 0x00)
#define DIV_FROM_REG(val) (1 << (val))
static inline u8
DIV_TO_REG(long val)
{
int i;
val = SENSORS_LIMIT(val, 1, 128) >> 1;
for (i = 0; i < 7; i++) {
if (val == 0)
break;
val >>= 1;
}
return ((u8) i);
}
struct w83792d_data {
struct i2c_client client;
struct device *hwmon_dev;
enum chips type;
struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
/* array of 2 pointers to subclients */
struct i2c_client *lm75[2];
u8 in[9]; /* Register value */
u8 in_max[9]; /* Register value */
u8 in_min[9]; /* Register value */
u16 low_bits; /* Additional resolution to voltage in6-0 */
u8 fan[7]; /* Register value */
u8 fan_min[7]; /* Register value */
u8 temp1[3]; /* current, over, thyst */
u8 temp_add[2][6]; /* Register value */
u8 fan_div[7]; /* Register encoding, shifted right */
u8 pwm[7]; /* We only consider the first 3 set of pwm,
although 792 chip has 7 set of pwm. */
u8 pwmenable[3];
u32 alarms; /* realtime status register encoding,combined */
u8 chassis; /* Chassis status */
u8 chassis_clear; /* CLR_CHS, clear chassis intrusion detection */
u8 thermal_cruise[3]; /* Smart FanI: Fan1,2,3 target value */
u8 tolerance[3]; /* Fan1,2,3 tolerance(Smart Fan I/II) */
u8 sf2_points[3][4]; /* Smart FanII: Fan1,2,3 temperature points */
u8 sf2_levels[3][4]; /* Smart FanII: Fan1,2,3 duty cycle levels */
};
static int w83792d_attach_adapter(struct i2c_adapter *adapter);
static int w83792d_detect(struct i2c_adapter *adapter, int address, int kind);
static int w83792d_detach_client(struct i2c_client *client);
static struct w83792d_data *w83792d_update_device(struct device *dev);
#ifdef DEBUG
static void w83792d_print_debug(struct w83792d_data *data, struct device *dev);
#endif
static void w83792d_init_client(struct i2c_client *client);
static struct i2c_driver w83792d_driver = {
.driver = {
.name = "w83792d",
},
.attach_adapter = w83792d_attach_adapter,
.detach_client = w83792d_detach_client,
};
static inline long in_count_from_reg(int nr, struct w83792d_data *data)
{
/* in7 and in8 do not have low bits, but the formula still works */
return ((data->in[nr] << 2) | ((data->low_bits >> (2 * nr)) & 0x03));
}
/* The SMBus locks itself. The Winbond W83792D chip has a bank register,
but the driver only accesses registers in bank 0, so we don't have
to switch banks and lock access between switches. */
static inline int w83792d_read_value(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
static inline int
w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
{
return i2c_smbus_write_byte_data(client, reg, value);
}
/* following are the sysfs callback functions */
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf,"%ld\n", IN_FROM_REG(nr,(in_count_from_reg(nr, data))));
}
#define show_in_reg(reg) \
static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
int nr = sensor_attr->index; \
struct w83792d_data *data = w83792d_update_device(dev); \
return sprintf(buf,"%ld\n", (long)(IN_FROM_REG(nr, (data->reg[nr])*4))); \
}
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 sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
int nr = sensor_attr->index; \
struct i2c_client *client = to_i2c_client(dev); \
struct w83792d_data *data = i2c_get_clientdata(client); \
u32 val; \
\
val = simple_strtoul(buf, NULL, 10); \
mutex_lock(&data->update_lock); \
data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
w83792d_write_value(client, W83792D_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);
#define show_fan_reg(reg) \
static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
int nr = sensor_attr->index - 1; \
struct w83792d_data *data = w83792d_update_device(dev); \
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
store_fan_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index - 1;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u32 val;
val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_fan_div(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr - 1]));
}
/* 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 *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index - 1;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
unsigned long min;
/*u8 reg;*/
u8 fan_div_reg = 0;
u8 tmp_fan_div;
/* Save fan_min */
mutex_lock(&data->update_lock);
min = FAN_FROM_REG(data->fan_min[nr],
DIV_FROM_REG(data->fan_div[nr]));
data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
fan_div_reg = w83792d_read_value(client, W83792D_REG_FAN_DIV[nr >> 1]);
fan_div_reg &= (nr & 0x01) ? 0x8f : 0xf8;
tmp_fan_div = (nr & 0x01) ? (((data->fan_div[nr]) << 4) & 0x70)
: ((data->fan_div[nr]) & 0x07);
w83792d_write_value(client, W83792D_REG_FAN_DIV[nr >> 1],
fan_div_reg | tmp_fan_div);
/* Restore fan_min */
data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
/* read/write the temperature1, includes measured value and limits */
static ssize_t show_temp1(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[nr]));
}
static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
s32 val;
val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->temp1[nr] = TEMP1_TO_REG(val);
w83792d_write_value(client, W83792D_REG_TEMP1[nr],
data->temp1[nr]);
mutex_unlock(&data->update_lock);
return count;
}
/* read/write the temperature2-3, includes measured value and limits */
static ssize_t show_temp23(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
int nr = sensor_attr->nr;
int index = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf,"%ld\n",
(long)TEMP_ADD_FROM_REG(data->temp_add[nr][index],
data->temp_add[nr][index+1]));
}
static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
int nr = sensor_attr->nr;
int index = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
s32 val;
val = simple_strtol(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
data->temp_add[nr][index]);
w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
data->temp_add[nr][index+1]);
mutex_unlock(&data->update_lock);
return count;
}
/* get reatime status of all sensors items: voltage, temp, fan */
static ssize_t
show_alarms_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%d\n", data->alarms);
}
static ssize_t show_alarm(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%d\n", (data->alarms >> nr) & 1);
}
static ssize_t
show_pwm(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
}
static ssize_t
show_pwmenable(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index - 1;
struct w83792d_data *data = w83792d_update_device(dev);
long pwm_enable_tmp = 1;
switch (data->pwmenable[nr]) {
case 0:
pwm_enable_tmp = 1; /* manual mode */
break;
case 1:
pwm_enable_tmp = 3; /*thermal cruise/Smart Fan I */
break;
case 2:
pwm_enable_tmp = 2; /* Smart Fan II */
break;
}
return sprintf(buf, "%ld\n", pwm_enable_tmp);
}
static ssize_t
store_pwm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;
mutex_lock(&data->update_lock);
val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
data->pwm[nr] = val;
w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
store_pwmenable(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index - 1;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u32 val;
u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
val = simple_strtoul(buf, NULL, 10);
if (val < 1 || val > 3)
return -EINVAL;
mutex_lock(&data->update_lock);
switch (val) {
case 1:
data->pwmenable[nr] = 0; /* manual mode */
break;
case 2:
data->pwmenable[nr] = 2; /* Smart Fan II */
break;
case 3:
data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
break;
}
cfg1_tmp = data->pwmenable[0];
cfg2_tmp = (data->pwmenable[1]) << 2;
cfg3_tmp = (data->pwmenable[2]) << 4;
cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_pwm_mode(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
}
static ssize_t
store_pwm_mode(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u32 val;
val = simple_strtoul(buf, NULL, 10);
if (val != 0 && val != 1)
return -EINVAL;
mutex_lock(&data->update_lock);
data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
if (val) { /* PWM mode */
data->pwm[nr] |= 0x80;
} else { /* DC mode */
data->pwm[nr] &= 0x7f;
}
w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_regs_chassis(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%d\n", data->chassis);
}
static ssize_t
show_chassis_clear(struct device *dev, struct device_attribute *attr, char *buf)
{
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%d\n", data->chassis_clear);
}
static ssize_t
store_chassis_clear(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u32 val;
u8 temp1 = 0, temp2 = 0;
val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
temp1 = ((data->chassis_clear) << 7) & 0x80;
temp2 = w83792d_read_value(client,
W83792D_REG_CHASSIS_CLR) & 0x7f;
w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
mutex_unlock(&data->update_lock);
return count;
}
/* For Smart Fan I / Thermal Cruise */
static ssize_t
show_thermal_cruise(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%ld\n", (long)data->thermal_cruise[nr-1]);
}
static ssize_t
store_thermal_cruise(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index - 1;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u32 val;
u8 target_tmp=0, target_mask=0;
val = simple_strtoul(buf, NULL, 10);
target_tmp = val;
target_tmp = target_tmp & 0x7f;
mutex_lock(&data->update_lock);
target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
w83792d_write_value(client, W83792D_REG_THERMAL[nr],
(data->thermal_cruise[nr]) | target_mask);
mutex_unlock(&data->update_lock);
return count;
}
/* For Smart Fan I/Thermal Cruise and Smart Fan II */
static ssize_t
show_tolerance(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%ld\n", (long)data->tolerance[nr-1]);
}
static ssize_t
store_tolerance(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
int nr = sensor_attr->index - 1;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u32 val;
u8 tol_tmp, tol_mask;
val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
tol_mask = w83792d_read_value(client,
W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
tol_tmp = SENSORS_LIMIT(val, 0, 15);
tol_tmp &= 0x0f;
data->tolerance[nr] = tol_tmp;
if (nr == 1) {
tol_tmp <<= 4;
}
w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
tol_mask | tol_tmp);
mutex_unlock(&data->update_lock);
return count;
}
/* For Smart Fan II */
static ssize_t
show_sf2_point(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
int nr = sensor_attr->nr;
int index = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%ld\n", (long)data->sf2_points[index-1][nr-1]);
}
static ssize_t
store_sf2_point(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
int nr = sensor_attr->nr - 1;
int index = sensor_attr->index - 1;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u32 val;
u8 mask_tmp = 0;
val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
mask_tmp = w83792d_read_value(client,
W83792D_REG_POINTS[index][nr]) & 0x80;
w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
mask_tmp|data->sf2_points[index][nr]);
mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
show_sf2_level(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
int nr = sensor_attr->nr;
int index = sensor_attr->index;
struct w83792d_data *data = w83792d_update_device(dev);
return sprintf(buf, "%d\n",
(((data->sf2_levels[index-1][nr]) * 100) / 15));
}
static ssize_t
store_sf2_level(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct sensor_device_attribute_2 *sensor_attr = to_sensor_dev_attr_2(attr);
int nr = sensor_attr->nr;
int index = sensor_attr->index - 1;
struct i2c_client *client = to_i2c_client(dev);
struct w83792d_data *data = i2c_get_clientdata(client);
u32 val;
u8 mask_tmp=0, level_tmp=0;
val = simple_strtoul(buf, NULL, 10);
mutex_lock(&data->update_lock);
data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
& ((nr==3) ? 0xf0 : 0x0f);
if (nr==3) {
level_tmp = data->sf2_levels[index][nr];
} else {
level_tmp = data->sf2_levels[index][nr] << 4;
}
w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
mutex_unlock(&data->update_lock);
return count;
}
/* This function is called when:
* w83792d_driver is inserted (when this module is loaded), for each
available adapter
* when a new adapter is inserted (and w83792d_driver is still present) */
static int
w83792d_attach_adapter(struct i2c_adapter *adapter)
{
if (!(adapter->class & I2C_CLASS_HWMON))
return 0;
return i2c_probe(adapter, &addr_data, w83792d_detect);
}
static int
w83792d_create_subclient(struct i2c_adapter *adapter,
struct i2c_client *new_client, int addr,
struct i2c_client **sub_cli)
{
int err;
struct i2c_client *sub_client;
(*sub_cli) = sub_client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (!(sub_client)) {
return -ENOMEM;
}
sub_client->addr = 0x48 + addr;
i2c_set_clientdata(sub_client, NULL);
sub_client->adapter = adapter;
sub_client->driver = &w83792d_driver;
sub_client->flags = 0;
strlcpy(sub_client->name, "w83792d subclient", I2C_NAME_SIZE);
if ((err = i2c_attach_client(sub_client))) {
dev_err(&new_client->dev, "subclient registration "
"at address 0x%x failed\n", sub_client->addr);
kfree(sub_client);
return err;
}
return 0;
}
static int
w83792d_detect_subclients(struct i2c_adapter *adapter, int address, int kind,
struct i2c_client *new_client)
{
int i, id, err;
u8 val;
struct w83792d_data *data = i2c_get_clientdata(new_client);
id = i2c_adapter_id(adapter);
if (force_subclients[0] == id && force_subclients[1] == address) {
for (i = 2; i <= 3; i++) {
if (force_subclients[i] < 0x48 ||
force_subclients[i] > 0x4f) {
dev_err(&new_client->dev, "invalid subclient "
"address %d; must be 0x48-0x4f\n",
force_subclients[i]);
err = -ENODEV;
goto ERROR_SC_0;
}
}
w83792d_write_value(new_client, W83792D_REG_I2C_SUBADDR,
(force_subclients[2] & 0x07) |
((force_subclients[3] & 0x07) << 4));
}
val = w83792d_read_value(new_client, W83792D_REG_I2C_SUBADDR);
if (!(val & 0x08)) {
err = w83792d_create_subclient(adapter, new_client, val & 0x7,
&data->lm75[0]);
if (err < 0)
goto ERROR_SC_0;
}
if (!(val & 0x80)) {
if ((data->lm75[0] != NULL) &&
((val & 0x7) == ((val >> 4) & 0x7))) {
dev_err(&new_client->dev, "duplicate addresses 0x%x, "
"use force_subclient\n", data->lm75[0]->addr);
err = -ENODEV;
goto ERROR_SC_1;
}
err = w83792d_create_subclient(adapter, new_client,
(val >> 4) & 0x7, &data->lm75[1]);
if (err < 0)
goto ERROR_SC_1;
}
return 0;
/* Undo inits in case of errors */
ERROR_SC_1:
if (data->lm75[0] != NULL) {
i2c_detach_client(data->lm75[0]);
kfree(data->lm75[0]);
}
ERROR_SC_0:
return err;
}
static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, show_in, NULL, 4);
static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, show_in, NULL, 5);
static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, show_in, NULL, 6);
static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, show_in, NULL, 7);
static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, show_in, NULL, 8);
static SENSOR_DEVICE_ATTR(in0_min, S_IWUSR | S_IRUGO,
show_in_min, store_in_min, 0);
static SENSOR_DEVICE_ATTR(in1_min, S_IWUSR | S_IRUGO,
show_in_min, store_in_min, 1);
static SENSOR_DEVICE_ATTR(in2_min, S_IWUSR | S_IRUGO,
show_in_min, store_in_min, 2);
static SENSOR_DEVICE_ATTR(in3_min, S_IWUSR | S_IRUGO,
show_in_min, store_in_min, 3);
static SENSOR_DEVICE_ATTR(in4_min, S_IWUSR | S_IRUGO,
show_in_min, store_in_min, 4);
static SENSOR_DEVICE_ATTR(in5_min, S_IWUSR | S_IRUGO,
show_in_min, store_in_min, 5);
static SENSOR_DEVICE_ATTR(in6_min, S_IWUSR | S_IRUGO,
show_in_min, store_in_min, 6);
static SENSOR_DEVICE_ATTR(in7_min, S_IWUSR | S_IRUGO,
show_in_min, store_in_min, 7);
static SENSOR_DEVICE_ATTR(in8_min, S_IWUSR | S_IRUGO,
show_in_min, store_in_min, 8);
static SENSOR_DEVICE_ATTR(in0_max, S_IWUSR | S_IRUGO,
show_in_max, store_in_max, 0);
static SENSOR_DEVICE_ATTR(in1_max, S_IWUSR | S_IRUGO,
show_in_max, store_in_max, 1);
static SENSOR_DEVICE_ATTR(in2_max, S_IWUSR | S_IRUGO,
show_in_max, store_in_max, 2);
static SENSOR_DEVICE_ATTR(in3_max, S_IWUSR | S_IRUGO,
show_in_max, store_in_max, 3);