[PATCH] I2C: W83792D driver 1/3
R.Marek@sh.cvut.cz [Wed, 27 Jul 2005 11:43:47 +0000 (11:43 +0000)]
I would like to announce support for W83792D chip. This driver was developed
by Winbond Electronics Corp. I added sysfs attributes callbacks infrastructure
plus various code fixes and codingstyle cleanups. I would like to thank Winbond
for supporting free software.

This patch is against 2.6.13rc3 plus hwmon-class and hwmon-split.
Separate patch for documantation and hwmon class register will follow.

Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: Chunhao Huang <DZShen@Winbond.com.tw>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/hwmon/Kconfig
drivers/hwmon/Makefile
drivers/hwmon/w83792d.c [new file with mode: 0644]
include/linux/hwmon-sysfs.h

index 29583e1..6483ff6 100644 (file)
@@ -377,6 +377,16 @@ config SENSORS_W83781D
          This driver can also be built as a module.  If so, the module
          will be called w83781d.
 
+config SENSORS_W83792D
+       tristate "Winbond W83792D"
+       depends on HWMON && I2C && EXPERIMENTAL
+       select I2C_SENSOR
+       help
+         If you say yes here you get support for the Winbond W83792D chip.
+
+         This driver can also be built as a module.  If so, the module
+         will be called w83792d.
+
 config SENSORS_W83L785TS
        tristate "Winbond W83L785TS-S"
        depends on HWMON && I2C && EXPERIMENTAL
index bd1bd59..187b89d 100644 (file)
@@ -7,6 +7,7 @@ obj-$(CONFIG_HWMON)             += hwmon.o
 # asb100, then w83781d go first, as they can override other drivers' addresses.
 obj-$(CONFIG_SENSORS_ASB100)   += asb100.o
 obj-$(CONFIG_SENSORS_W83627HF) += w83627hf.o
+obj-$(CONFIG_SENSORS_W83792D)  += w83792d.o
 obj-$(CONFIG_SENSORS_W83781D)  += w83781d.o
 
 obj-$(CONFIG_SENSORS_ADM1021)  += adm1021.o
diff --git a/drivers/hwmon/w83792d.c b/drivers/hwmon/w83792d.c
new file mode 100644 (file)
index 0000000..fa43b6f
--- /dev/null
@@ -0,0 +1,1633 @@
+/*
+    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@sh.cvut.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/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/i2c-sensor.h>
+#include <linux/i2c-vid.h>
+#include <linux/hwmon-sysfs.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
+
+/* Insmod parameters */
+SENSORS_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_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 PWM_FROM_REG(val)              (val)
+#define PWM_TO_REG(val)                        (SENSORS_LIMIT((val),0,255))
+#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 < 6; i++) {
+               if (val == 0)
+                       break;
+               val >>= 1;
+       }
+       return ((u8) i);
+}
+
+struct w83792d_data {
+       struct i2c_client client;
+       struct semaphore lock;
+       enum chips type;
+
+       struct semaphore 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 */
+       u8 low_bits[2];         /* Additional resolution to voltage in0-6 */
+       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];
+       u8 pwm_mode[7];         /* indicates PWM or DC mode: 1->PWM; 0->DC */
+       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 int w83792d_read_value(struct i2c_client *client, u8 register);
+static int w83792d_write_value(struct i2c_client *client, u8 register,
+                               u8 value);
+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 = {
+       .owner = THIS_MODULE,
+       .name = "w83792d",
+       .flags = I2C_DF_NOTIFY,
+       .attach_adapter = w83792d_attach_adapter,
+       .detach_client = w83792d_detach_client,
+};
+
+static long in_count_from_reg(int nr, struct w83792d_data *data)
+{
+       u16 vol_count = data->in[nr];
+       u16 low_bits = 0;
+       vol_count = (vol_count << 2);
+       switch (nr)
+       {
+       case 0:  /* vin0 */
+               low_bits = (data->low_bits[0]) & 0x03;
+               break;
+       case 1:  /* vin1 */
+               low_bits = ((data->low_bits[0]) & 0x0c) >> 2;
+               break;
+       case 2:  /* vin2 */
+               low_bits = ((data->low_bits[0]) & 0x30) >> 4;
+               break;
+       case 3:  /* vin3 */
+               low_bits = ((data->low_bits[0]) & 0xc0) >> 6;
+               break;
+       case 4:  /* vin4 */
+               low_bits = (data->low_bits[1]) & 0x03;
+               break;
+       case 5:  /* vin5 */
+               low_bits = ((data->low_bits[1]) & 0x0c) >> 2;
+               break;
+       case 6:  /* vin6 */
+               low_bits = ((data->low_bits[1]) & 0x30) >> 4;
+       default:
+               break;
+       }
+       vol_count = vol_count | low_bits;
+       return vol_count;
+}
+
+/* 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); \
+       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]); \
+        \
+       return count; \
+}
+store_in_reg(MIN, min);
+store_in_reg(MAX, max);
+
+#define sysfs_in_reg(offset) \
+static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in, \
+                               NULL, offset); \
+static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
+                               show_in_min, store_in_min, offset); \
+static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
+                               show_in_max, store_in_max, offset);
+
+sysfs_in_reg(0);
+sysfs_in_reg(1);
+sysfs_in_reg(2);
+sysfs_in_reg(3);
+sysfs_in_reg(4);
+sysfs_in_reg(5);
+sysfs_in_reg(6);
+sysfs_in_reg(7);
+sysfs_in_reg(8);
+
+#define device_create_file_in(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_in##offset##_input.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_in##offset##_max.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_in##offset##_min.dev_attr); \
+} while (0)
+
+#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);
+       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]);
+
+       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 suprise; 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 */
+       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]);
+
+       return count;
+}
+
+#define sysfs_fan(offset) \
+static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan, NULL, \
+                               offset); \
+static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
+                               show_fan_div, store_fan_div, offset); \
+static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
+                               show_fan_min, store_fan_min, offset);
+
+sysfs_fan(1);
+sysfs_fan(2);
+sysfs_fan(3);
+sysfs_fan(4);
+sysfs_fan(5);
+sysfs_fan(6);
+sysfs_fan(7);
+
+#define device_create_file_fan(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_input.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_div.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_fan##offset##_min.dev_attr); \
+} while (0)
+
+
+/* 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);
+
+       data->temp1[nr] = TEMP1_TO_REG(val);
+       w83792d_write_value(client, W83792D_REG_TEMP1[nr],
+               data->temp1[nr]);
+
+       return count;
+}
+
+
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, show_temp1,
+                               store_temp1, 1);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, show_temp1,
+                               store_temp1, 2);
+
+#define device_create_file_temp1(client) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_temp1_max_hyst.dev_attr); \
+} while (0)
+
+
+/* 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);
+
+       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]);
+
+       return count;
+}
+
+#define sysfs_temp23(name,idx) \
+static SENSOR_DEVICE_ATTR_2(name##_input, S_IRUGO, show_temp23, NULL, \
+                               idx, 0); \
+static SENSOR_DEVICE_ATTR_2(name##_max, S_IRUGO | S_IWUSR, \
+                               show_temp23, store_temp23, idx, 2); \
+static SENSOR_DEVICE_ATTR_2(name##_max_hyst, S_IRUGO | S_IWUSR, \
+                               show_temp23, store_temp23, idx, 4);
+
+sysfs_temp23(temp2,0)
+sysfs_temp23(temp3,1)
+
+#define device_create_file_temp_add(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_input.dev_attr); \
+device_create_file(&client->dev, &sensor_dev_attr_temp##offset##_max.dev_attr); \
+device_create_file(&client->dev, \
+&sensor_dev_attr_temp##offset##_max_hyst.dev_attr); \
+} while (0)
+
+
+/* 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
+DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
+#define device_create_file_alarms(client) \
+device_create_file(&client->dev, &dev_attr_alarms);
+
+
+
+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, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr-1]));
+}
+
+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 - 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);
+       data->pwm[nr] = PWM_TO_REG(val);
+       w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
+
+       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);
+       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;
+       default:
+               return -EINVAL;
+       }
+       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);
+
+       return count;
+}
+
+#define sysfs_pwm(offset) \
+static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
+                               show_pwm, store_pwm, offset); \
+static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
+                               show_pwmenable, store_pwmenable, offset); \
+
+sysfs_pwm(1);
+sysfs_pwm(2);
+sysfs_pwm(3);
+
+
+#define device_create_file_pwm(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_pwm##offset.dev_attr); \
+} while (0)
+
+#define device_create_file_pwmenable(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_enable.dev_attr); \
+} while (0)
+
+
+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_mode[nr-1]);
+}
+
+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 - 1;
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83792d_data *data = i2c_get_clientdata(client);
+       u32 val;
+       u8 pwm_mode_mask = 0;
+
+       val = simple_strtoul(buf, NULL, 10);
+       data->pwm_mode[nr] = SENSORS_LIMIT(val, 0, 1);
+       pwm_mode_mask = w83792d_read_value(client,
+               W83792D_REG_PWM[nr]) & 0x7f;
+       w83792d_write_value(client, W83792D_REG_PWM[nr],
+               ((data->pwm_mode[nr]) << 7) | pwm_mode_mask);
+
+       return count;
+}
+
+#define sysfs_pwm_mode(offset) \
+static SENSOR_DEVICE_ATTR(pwm##offset##_mode, S_IRUGO | S_IWUSR, \
+                               show_pwm_mode, store_pwm_mode, offset);
+
+sysfs_pwm_mode(1);
+sysfs_pwm_mode(2);
+sysfs_pwm_mode(3);
+
+#define device_create_file_pwm_mode(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_pwm##offset##_mode.dev_attr); \
+} while (0)
+
+
+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 DEVICE_ATTR(chassis, S_IRUGO, show_regs_chassis, NULL);
+
+#define device_create_file_chassis(client) \
+do { \
+device_create_file(&client->dev, &dev_attr_chassis); \
+} while (0)
+
+
+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);
+
+       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);
+
+       return count;
+}
+
+static DEVICE_ATTR(chassis_clear, S_IRUGO | S_IWUSR,
+               show_chassis_clear, store_chassis_clear);
+
+#define device_create_file_chassis_clear(client) \
+do { \
+device_create_file(&client->dev, &dev_attr_chassis_clear); \
+} while (0)
+
+
+
+/* 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;
+       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);
+
+       return count;
+}
+
+#define sysfs_thermal_cruise(offset) \
+static SENSOR_DEVICE_ATTR(thermal_cruise##offset, S_IRUGO | S_IWUSR, \
+                       show_thermal_cruise, store_thermal_cruise, offset);
+
+sysfs_thermal_cruise(1);
+sysfs_thermal_cruise(2);
+sysfs_thermal_cruise(3);
+
+#define device_create_file_thermal_cruise(client, offset) \
+do { \
+device_create_file(&client->dev, \
+&sensor_dev_attr_thermal_cruise##offset.dev_attr); \
+} while (0)
+
+
+/* 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);
+       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);
+
+       return count;
+}
+
+#define sysfs_tolerance(offset) \
+static SENSOR_DEVICE_ATTR(tolerance##offset, S_IRUGO | S_IWUSR, \
+                               show_tolerance, store_tolerance, offset);
+
+sysfs_tolerance(1);
+sysfs_tolerance(2);
+sysfs_tolerance(3);
+
+#define device_create_file_tolerance(client, offset) \
+do { \
+device_create_file(&client->dev, &sensor_dev_attr_tolerance##offset.dev_attr); \
+} while (0)
+
+
+/* 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);
+       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]);
+
+       return count;
+}
+
+#define sysfs_sf2_point(offset, index) \
+static SENSOR_DEVICE_ATTR_2(sf2_point##offset##_fan##index, S_IRUGO | S_IWUSR, \
+                               show_sf2_point, store_sf2_point, offset, index);
+
+sysfs_sf2_point(1, 1); /* Fan1 */
+sysfs_sf2_point(2, 1); /* Fan1 */
+sysfs_sf2_point(3, 1); /* Fan1 */
+sysfs_sf2_point(4, 1); /* Fan1 */
+sysfs_sf2_point(1, 2); /* Fan2 */
+sysfs_sf2_point(2, 2); /* Fan2 */
+sysfs_sf2_point(3, 2); /* Fan2 */
+sysfs_sf2_point(4, 2); /* Fan2 */
+sysfs_sf2_point(1, 3); /* Fan3 */
+sysfs_sf2_point(2, 3); /* Fan3 */
+sysfs_sf2_point(3, 3); /* Fan3 */
+sysfs_sf2_point(4, 3); /* Fan3 */
+
+#define device_create_file_sf2_point(client, offset, index) \
+do { \
+device_create_file(&client->dev, \
+&sensor_dev_attr_sf2_point##offset##_fan##index.dev_attr); \
+} while (0)
+
+
+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);
+       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);
+
+       return count;
+}
+
+#define sysfs_sf2_level(offset, index) \
+static SENSOR_DEVICE_ATTR_2(sf2_level##offset##_fan##index, S_IRUGO | S_IWUSR, \
+                               show_sf2_level, store_sf2_level, offset, index);
+
+sysfs_sf2_level(1, 1); /* Fan1 */
+sysfs_sf2_level(2, 1); /* Fan1 */
+sysfs_sf2_level(3, 1); /* Fan1 */
+sysfs_sf2_level(1, 2); /* Fan2 */
+sysfs_sf2_level(2, 2); /* Fan2 */
+sysfs_sf2_level(3, 2); /* Fan2 */
+sysfs_sf2_level(1, 3); /* Fan3 */
+sysfs_sf2_level(2, 3); /* Fan3 */
+sysfs_sf2_level(3, 3); /* Fan3 */
+
+#define device_create_file_sf2_level(client, offset, index) \
+do { \
+device_create_file(&client->dev, \
+&sensor_dev_attr_sf2_level##offset##_fan##index.dev_attr); \
+} while (0)
+
+
+/* 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_detect(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 = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+       if (!(sub_client)) {
+               return -ENOMEM;
+       }
+       memset(sub_client, 0x00, sizeof(struct i2c_client));
+       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 int
+w83792d_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+       int i = 0, val1 = 0, val2;
+       struct i2c_client *new_client;
+       struct w83792d_data *data;
+       int err = 0;
+       const char *client_name = "";
+
+       if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+               goto ERROR0;
+       }
+
+       /* OK. For now, we presume we have a valid client. We now create the
+          client structure, even though we cannot fill it completely yet.
+          But it allows us to access w83792d_{read,write}_value. */
+
+       if (!(data = kmalloc(sizeof(struct w83792d_data), GFP_KERNEL))) {
+               err = -ENOMEM;
+               goto ERROR0;
+       }
+       memset(data, 0, sizeof(struct w83792d_data));
+
+       new_client = &data->client;
+       i2c_set_clientdata(new_client, data);
+       new_client->addr = address;
+       init_MUTEX(&data->lock);
+       new_client->adapter = adapter;
+       new_client->driver = &w83792d_driver;
+       new_client->flags = 0;
+
+       /* Now, we do the remaining detection. */
+
+       /* The w83792d may be stuck in some other bank than bank 0. This may
+          make reading other information impossible. Specify a force=... or
+          force_*=... parameter, and the Winbond will be reset to the right
+          bank. */
+       if (kind < 0) {
+               if (w83792d_read_value(new_client, W83792D_REG_CONFIG) & 0x80) {
+                       dev_warn(&new_client->dev, "Detection failed at step "
+                               "3\n");
+                       goto ERROR1;
+               }
+               val1 = w83792d_read_value(new_client, W83792D_REG_BANK);
+               val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
+               /* Check for Winbond ID if in bank 0 */
+               if (!(val1 & 0x07)) {  /* is Bank0 */
+                       if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
+                            ((val1 & 0x80) && (val2 != 0x5c))) {
+                               goto ERROR1;
+                       }
+               }
+               /* If Winbond chip, address of chip and W83792D_REG_I2C_ADDR
+                  should match */
+               if (w83792d_read_value(new_client,
+                                       W83792D_REG_I2C_ADDR) != address) {
+                       dev_warn(&new_client->dev, "Detection failed "
+                               "at step 5\n");
+                       goto ERROR1;
+               }
+       }
+
+       /* We have either had a force parameter, or we have already detected the
+          Winbond. Put it now into bank 0 and Vendor ID High Byte */
+       w83792d_write_value(new_client,
+                           W83792D_REG_BANK,
+                           (w83792d_read_value(new_client,
+                               W83792D_REG_BANK) & 0x78) | 0x80);
+
+       /* Determine the chip type. */
+       if (kind <= 0) {
+               /* get vendor ID */
+               val2 = w83792d_read_value(new_client, W83792D_REG_CHIPMAN);
+               if (val2 != 0x5c) {  /* the vendor is NOT Winbond */
+                       goto ERROR1;
+               }
+               val1 = w83792d_read_value(new_client, W83792D_REG_WCHIPID);
+               if (val1 == 0x7a && address >= 0x2c) {
+                       kind = w83792d;
+               } else {
+                       if (kind == 0)
+                                       dev_warn(&new_client->dev,
+                                       "w83792d: Ignoring 'force' parameter for"
+                                       " unknown chip at adapter %d, address"
+                                       " 0x%02x\n", i2c_adapter_id(adapter),
+                                       address);
+                       goto ERROR1;
+               }
+       }
+
+       if (kind == w83792d) {
+               client_name = "w83792d";
+       } else {
+               dev_err(&new_client->dev, "w83792d: Internal error: unknown"
+                                         " kind (%d)?!?", kind);
+               goto ERROR1;
+       }
+
+       /* Fill in the remaining client fields and put into the global list */
+       strlcpy(new_client->name, client_name, I2C_NAME_SIZE);
+       data->type = kind;
+
+       data->valid = 0;
+       init_MUTEX(&data->update_lock);
+
+       /* Tell the I2C layer a new client has arrived */
+       if ((err = i2c_attach_client(new_client)))
+               goto ERROR1;
+
+       if ((err = w83792d_detect_subclients(adapter, address,
+                       kind, new_client)))
+               goto ERROR2;
+
+       /* Initialize the chip */
+       w83792d_init_client(new_client);
+
+       /* A few vars need to be filled upon startup */
+       for (i = 1; i <= 7; i++) {
+               data->fan_min[i - 1] = w83792d_read_value(new_client,
+                                       W83792D_REG_FAN_MIN[i]);
+       }
+
+       /* Register sysfs hooks */
+       device_create_file_in(new_client, 0);
+       device_create_file_in(new_client, 1);
+       device_create_file_in(new_client, 2);
+       device_create_file_in(new_client, 3);
+       device_create_file_in(new_client, 4);
+       device_create_file_in(new_client, 5);
+       device_create_file_in(new_client, 6);
+       device_create_file_in(new_client, 7);
+       device_create_file_in(new_client, 8);
+
+       device_create_file_fan(new_client, 1);
+       device_create_file_fan(new_client, 2);
+       device_create_file_fan(new_client, 3);
+       device_create_file_fan(new_client, 4);
+       device_create_file_fan(new_client, 5);
+       device_create_file_fan(new_client, 6);
+       device_create_file_fan(new_client, 7);
+
+       device_create_file_temp1(new_client);           /* Temp1 */
+       device_create_file_temp_add(new_client, 2);     /* Temp2 */
+       device_create_file_temp_add(new_client, 3);     /* Temp3 */
+
+       device_create_file_alarms(new_client);
+
+       device_create_file_pwm(new_client, 1);
+       device_create_file_pwm(new_client, 2);
+       device_create_file_pwm(new_client, 3);
+
+       device_create_file_pwmenable(new_client, 1);
+       device_create_file_pwmenable(new_client, 2);
+       device_create_file_pwmenable(new_client, 3);
+
+       device_create_file_pwm_mode(new_client, 1);
+       device_create_file_pwm_mode(new_client, 2);
+       device_create_file_pwm_mode(new_client, 3);
+
+       device_create_file_chassis(new_client);
+       device_create_file_chassis_clear(new_client);
+
+       device_create_file_thermal_cruise(new_client, 1);
+       device_create_file_thermal_cruise(new_client, 2);
+       device_create_file_thermal_cruise(new_client, 3);
+
+       device_create_file_tolerance(new_client, 1);
+       device_create_file_tolerance(new_client, 2);
+       device_create_file_tolerance(new_client, 3);
+
+       device_create_file_sf2_point(new_client, 1, 1); /* Fan1 */
+       device_create_file_sf2_point(new_client, 2, 1); /* Fan1 */
+       device_create_file_sf2_point(new_client, 3, 1); /* Fan1 */
+       device_create_file_sf2_point(new_client, 4, 1); /* Fan1 */
+       device_create_file_sf2_point(new_client, 1, 2); /* Fan2 */
+       device_create_file_sf2_point(new_client, 2, 2); /* Fan2 */
+       device_create_file_sf2_point(new_client, 3, 2); /* Fan2 */
+       device_create_file_sf2_point(new_client, 4, 2); /* Fan2 */
+       device_create_file_sf2_point(new_client, 1, 3); /* Fan3 */
+       device_create_file_sf2_point(new_client, 2, 3); /* Fan3 */
+       device_create_file_sf2_point(new_client, 3, 3); /* Fan3 */
+       device_create_file_sf2_point(new_client, 4, 3); /* Fan3 */
+
+       device_create_file_sf2_level(new_client, 1, 1); /* Fan1 */
+       device_create_file_sf2_level(new_client, 2, 1); /* Fan1 */
+       device_create_file_sf2_level(new_client, 3, 1); /* Fan1 */
+       device_create_file_sf2_level(new_client, 1, 2); /* Fan2 */
+       device_create_file_sf2_level(new_client, 2, 2); /* Fan2 */
+       device_create_file_sf2_level(new_client, 3, 2); /* Fan2 */
+       device_create_file_sf2_level(new_client, 1, 3); /* Fan3 */
+       device_create_file_sf2_level(new_client, 2, 3); /* Fan3 */
+       device_create_file_sf2_level(new_client, 3, 3); /* Fan3 */
+
+       return 0;
+
+ERROR2:
+       i2c_detach_client(new_client);
+ERROR1:
+       kfree(data);
+ERROR0:
+       return err;
+}
+
+static int
+w83792d_detach_client(struct i2c_client *client)
+{
+       int err;
+
+       if ((err = i2c_detach_client(client))) {
+               dev_err(&client->dev,
+                       "Client deregistration failed, client not detached.\n");
+               return err;
+       }
+
+       if (i2c_get_clientdata(client)==NULL) {
+               /* subclients */
+               kfree(client);
+       } else {
+               /* main client */
+               kfree(i2c_get_clientdata(client));
+       }
+
+       return 0;
+}
+
+/* The SMBus locks itself, usually, but nothing may access the Winbond between
+   bank switches. ISA access must always be locked explicitly!
+   We ignore the W83792D BUSY flag at this moment - it could lead to deadlocks,
+   would slow down the W83792D access and should not be necessary.
+   There are some ugly typecasts here, but the good news is - they should
+   nowhere else be necessary! */
+static int
+w83792d_read_value(struct i2c_client *client, u8 reg)
+{
+       int res=0;
+       res = i2c_smbus_read_byte_data(client, reg);
+
+       return res;
+}
+
+static int
+w83792d_write_value(struct i2c_client *client, u8 reg, u8 value)
+{
+       i2c_smbus_write_byte_data(client, reg,  value);
+       return 0;
+}
+
+/* Called when we have found a new W83792D. It should set limits, etc. */
+static void
+w83792d_init_client(struct i2c_client *client)
+{
+       u8 temp2_cfg, temp3_cfg, vid_in_b;
+
+       if (init) {
+               w83792d_write_value(client, W83792D_REG_CONFIG, 0x80);
+       }
+       /* Clear the bit6 of W83792D_REG_VID_IN_B(set it into 0):
+          W83792D_REG_VID_IN_B bit6 = 0: the high/low limit of
+            vin0/vin1 can be modified by user;
+          W83792D_REG_VID_IN_B bit6 = 1: the high/low limit of
+            vin0/vin1 auto-updated, can NOT be modified by user. */
+       vid_in_b = w83792d_read_value(client, W83792D_REG_VID_IN_B);
+       w83792d_write_value(client, W83792D_REG_VID_IN_B,
+                           vid_in_b & 0xbf);
+
+       temp2_cfg = w83792d_read_value(client, W83792D_REG_TEMP2_CONFIG);
+       temp3_cfg = w83792d_read_value(client, W83792D_REG_TEMP3_CONFIG);
+       w83792d_write_value(client, W83792D_REG_TEMP2_CONFIG,
+                               temp2_cfg & 0xe6);
+       w83792d_write_value(client, W83792D_REG_TEMP3_CONFIG,
+                               temp3_cfg & 0xe6);
+
+       /* Start monitoring */
+       w83792d_write_value(client, W83792D_REG_CONFIG,
+                           (w83792d_read_value(client,
+                                               W83792D_REG_CONFIG) & 0xf7)
+                           | 0x01);
+}
+
+static struct w83792d_data *w83792d_update_device(struct device *dev)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83792d_data *data = i2c_get_clientdata(client);
+       int i, j;
+       u8 reg_array_tmp[4], pwm_array_tmp[7], reg_tmp;
+
+       down(&data->update_lock);
+
+       if (time_after
+           (jiffies - data->last_updated, (unsigned long) (HZ * 3))
+           || time_before(jiffies, data->last_updated) || !data->valid) {
+               dev_dbg(dev, "Starting device update\n");
+
+               /* Update the voltages measured value and limits */
+               for (i = 0; i < 9; i++) {
+                       data->in[i] = w83792d_read_value(client,
+                                               W83792D_REG_IN[i]);
+                       data->in_max[i] = w83792d_read_value(client,
+                                               W83792D_REG_IN_MAX[i]);
+                       data->in_min[i] = w83792d_read_value(client,
+                                               W83792D_REG_IN_MIN[i]);
+               }
+               data->low_bits[0] = w83792d_read_value(client,
+                                               W83792D_REG_LOW_BITS1);
+               data->low_bits[1] = w83792d_read_value(client,
+                                               W83792D_REG_LOW_BITS2);
+               for (i = 0; i < 7; i++) {
+                       /* Update the Fan measured value and limits */
+                       data->fan[i] = w83792d_read_value(client,
+                                               W83792D_REG_FAN[i]);
+                       data->fan_min[i] = w83792d_read_value(client,
+                                               W83792D_REG_FAN_MIN[i]);
+                       /* Update the PWM/DC Value and PWM/DC flag */
+                       pwm_array_tmp[i] = w83792d_read_value(client,
+                                               W83792D_REG_PWM[i]);
+                       data->pwm[i] = pwm_array_tmp[i] & 0x0f;
+                       data->pwm_mode[i] = (pwm_array_tmp[i] >> 7) & 0x01;
+               }
+
+               reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
+               data->pwmenable[0] = reg_tmp & 0x03;
+               data->pwmenable[1] = (reg_tmp>>2) & 0x03;
+               data->pwmenable[2] = (reg_tmp>>4) & 0x03;
+
+               for (i = 0; i < 3; i++) {
+                       data->temp1[i] = w83792d_read_value(client,
+                                                       W83792D_REG_TEMP1[i]);
+               }
+               for (i = 0; i < 2; i++) {
+                       for (j = 0; j < 6; j++) {
+                               data->temp_add[i][j] = w83792d_read_value(
+                                       client,W83792D_REG_TEMP_ADD[i][j]);
+                       }
+               }
+
+               /* Update the Fan Divisor */
+               for (i = 0; i < 4; i++) {
+                       reg_array_tmp[i] = w83792d_read_value(client,
+                                                       W83792D_REG_FAN_DIV[i]);
+               }
+               data->fan_div[0] = reg_array_tmp[0] & 0x07;
+               data->fan_div[1] = (reg_array_tmp[0] >> 4) & 0x07;
+               data->fan_div[2] = reg_array_tmp[1] & 0x07;
+               data->fan_div[3] = (reg_array_tmp[1] >> 4) & 0x07;
+               data->fan_div[4] = reg_array_tmp[2] & 0x07;
+               data->fan_div[5] = (reg_array_tmp[2] >> 4) & 0x07;
+               data->fan_div[6] = reg_array_tmp[3] & 0x07;
+
+               /* Update the realtime status */
+               data->alarms = w83792d_read_value(client, W83792D_REG_ALARM1) +
+                       (w83792d_read_value(client, W83792D_REG_ALARM2) << 8) +
+                       (w83792d_read_value(client, W83792D_REG_ALARM3) << 16);
+
+               /* Update CaseOpen status and it's CLR_CHS. */
+               data->chassis = (w83792d_read_value(client,
+                       W83792D_REG_CHASSIS) >> 5) & 0x01;
+               data->chassis_clear = (w83792d_read_value(client,
+                       W83792D_REG_CHASSIS_CLR) >> 7) & 0x01;
+
+               /* Update Thermal Cruise/Smart Fan I target value */
+               for (i = 0; i < 3; i++) {
+                       data->thermal_cruise[i] =
+                               w83792d_read_value(client,
+                               W83792D_REG_THERMAL[i]) & 0x7f;
+               }
+
+               /* Update Smart Fan I/II tolerance */
+               reg_tmp = w83792d_read_value(client, W83792D_REG_TOLERANCE[0]);
+               data->tolerance[0] = reg_tmp & 0x0f;
+               data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
+               data->tolerance[2] = w83792d_read_value(client,
+                                       W83792D_REG_TOLERANCE[2]) & 0x0f;
+
+               /* Update Smart Fan II temperature points */
+               for (i = 0; i < 3; i++) {
+                       for (j = 0; j < 4; j++) {
+                               data->sf2_points[i][j] = w83792d_read_value(
+                                       client,W83792D_REG_POINTS[i][j]) & 0x7f;
+                       }
+               }
+
+               /* Update Smart Fan II duty cycle levels */
+               for (i = 0; i < 3; i++) {
+                       reg_tmp = w83792d_read_value(client,
+                                               W83792D_REG_LEVELS[i][0]);
+                       data->sf2_levels[i][0] = reg_tmp & 0x0f;
+                       data->sf2_levels[i][1] = (reg_tmp >> 4) & 0x0f;
+                       reg_tmp = w83792d_read_value(client,
+                                               W83792D_REG_LEVELS[i][2]);
+                       data->sf2_levels[i][2] = (reg_tmp >> 4) & 0x0f;
+                       data->sf2_levels[i][3] = reg_tmp & 0x0f;
+               }
+
+               data->last_updated = jiffies;
+               data->valid = 1;
+       }
+
+       up(&data->update_lock);
+
+#ifdef DEBUG
+       w83792d_print_debug(data, dev);
+#endif
+
+       return data;
+}
+
+#ifdef DEBUG
+static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
+{
+       int i=0, j=0;
+       dev_dbg(dev, "==========The following is the debug message...========\n");
+       dev_dbg(dev, "9 set of Voltages: =====>\n");
+       for (i=0; i<9; i++) {
+               dev_dbg(dev, "vin[%d] is: 0x%x\n", i, data->in[i]);
+               dev_dbg(dev, "vin[%d] max is: 0x%x\n", i, data->in_max[i]);
+               dev_dbg(dev, "vin[%d] min is: 0x%x\n", i, data->in_min[i]);
+       }
+       dev_dbg(dev, "Low Bit1 is: 0x%x\n", data->low_bits[0]);
+       dev_dbg(dev, "Low Bit2 is: 0x%x\n", data->low_bits[1]);
+       dev_dbg(dev, "7 set of Fan Counts and Duty Cycles: =====>\n");
+       for (i=0; i<7; i++) {
+               dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
+               dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
+               dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
+               dev_dbg(dev, "pwm_mode[%d] is: 0x%x\n", i, data->pwm_mode[i]);
+       }
+       dev_dbg(dev, "3 set of Temperatures: =====>\n");
+       for (i=0; i<3; i++) {
+               dev_dbg(dev, "temp1[%d] is: 0x%x\n", i, data->temp1[i]);
+       }
+
+       for (i=0; i<2; i++) {
+               for (j=0; j<6; j++) {
+                       dev_dbg(dev, "temp_add[%d][%d] is: 0x%x\n", i, j,
+                                                       data->temp_add[i][j]);
+               }
+       }
+
+       for (i=0; i<7; i++) {
+               dev_dbg(dev, "fan_div[%d] is: 0x%x\n", i, data->fan_div[i]);
+       }
+       dev_dbg(dev, "==========End of the debug message...==================\n");
+       dev_dbg(dev, "\n");
+}
+#endif
+
+static int __init
+sensors_w83792d_init(void)
+{
+       return i2c_add_driver(&w83792d_driver);
+}
+
+static void __exit
+sensors_w83792d_exit(void)
+{
+       i2c_del_driver(&w83792d_driver);
+}
+
+MODULE_AUTHOR("Chunhao Huang @ Winbond <DZShen@Winbond.com.tw>");
+MODULE_DESCRIPTION("W83792AD/D driver for linux-2.6");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_w83792d_init);
+module_exit(sensors_w83792d_exit);
+
index 1b5018a..7eb4004 100644 (file)
@@ -33,4 +33,19 @@ struct sensor_device_attribute sensor_dev_attr_##_name = {   \
        .index =        _index,                                 \
 }
 
+struct sensor_device_attribute_2 {
+       struct device_attribute dev_attr;
+       u8 index;
+       u8 nr;
+};
+#define to_sensor_dev_attr_2(_dev_attr) \
+       container_of(_dev_attr, struct sensor_device_attribute_2, dev_attr)
+
+#define SENSOR_DEVICE_ATTR_2(_name,_mode,_show,_store,_nr,_index)      \
+struct sensor_device_attribute_2 sensor_dev_attr_##_name = {   \
+       .dev_attr =     __ATTR(_name,_mode,_show,_store),       \
+       .index =        _index,                                 \
+       .nr =           _nr,                                    \
+}
+
 #endif /* _LINUX_HWMON_SYSFS_H */