hwmon: New driver for the W83795G/ADG monitoring chips
authorWei Song <Wsong@nuvoton.com>
Thu, 28 Oct 2010 18:31:44 +0000 (20:31 +0200)
committerJean Delvare <khali@endymion.delvare>
Thu, 28 Oct 2010 18:31:44 +0000 (20:31 +0200)
There is still much work needed, but I wanted to give Wei the credit
he deserves. I've merged some of my own fixes already, to make
gcc and checkpatch happy. Individual fixes and improvements from me
will follow.

[JD: Fix build errors]
[JD: Coding style cleanups]
[JD: Get rid of forward declarations]
[JD: Drop VID support]
[JD: Drop fault output control feature]
[JD: Use lowercase for inline function names]
[JD: Use strict variants of the strtol/ul functions]
[JD: Shorten the read and write function names]

Signed-off-by: Jean Delvare <khali@linux-fr.org>
drivers/hwmon/Kconfig
drivers/hwmon/Makefile
drivers/hwmon/w83795.c [new file with mode: 0644]

index d875d102ee3f51ab77efd757268a9da89ffaa6a7..d229f45928452d53e93ac1d61a934a0c90d0b849 100644 (file)
@@ -1031,6 +1031,16 @@ config SENSORS_W83793
          This driver can also be built as a module.  If so, the module
          will be called w83793.
 
+config SENSORS_W83795
+       tristate "Winbond/Nuvoton W83795G/ADG"
+       depends on I2C && EXPERIMENTAL
+       help
+         If you say yes here you get support for the Winbond W83795G and
+         W83795ADG hardware monitoring chip.
+
+         This driver can also be built as a module.  If so, the module
+         will be called w83795.
+
 config SENSORS_W83L785TS
        tristate "Winbond W83L785TS-S"
        depends on I2C && EXPERIMENTAL
index d30f0f6870e02ff859c6df5d19f3762eb3dc78a1..641b8b349a3dfb0dfe49e59ae8d345769a3b7c52 100644 (file)
@@ -14,6 +14,7 @@ obj-$(CONFIG_SENSORS_ASB100)  += asb100.o
 obj-$(CONFIG_SENSORS_W83627HF) += w83627hf.o
 obj-$(CONFIG_SENSORS_W83792D)  += w83792d.o
 obj-$(CONFIG_SENSORS_W83793)   += w83793.o
+obj-$(CONFIG_SENSORS_W83795)   += w83795.o
 obj-$(CONFIG_SENSORS_W83781D)  += w83781d.o
 obj-$(CONFIG_SENSORS_W83791D)  += w83791d.o
 
diff --git a/drivers/hwmon/w83795.c b/drivers/hwmon/w83795.c
new file mode 100644 (file)
index 0000000..c6984c8
--- /dev/null
@@ -0,0 +1,2138 @@
+/*
+ *  w83795.c - Linux kernel driver for hardware monitoring
+ *  Copyright (C) 2008 Nuvoton Technology Corp.
+ *                Wei Song
+ *
+ *  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 - version 2.
+ *
+ *  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., 51 Franklin Street, Fifth Floor, Boston, MA
+ *  02110-1301 USA.
+ *
+ *  Supports following chips:
+ *
+ *  Chip       #vin   #fanin #pwm #temp #dts wchipid  vendid  i2c  ISA
+ *  w83795g     21     14     8     6     8    0x79   0x5ca3  yes   no
+ *  w83795adg   18     14     2     6     8    0x79   0x5ca3  yes   no
+ */
+
+#include <linux/kernel.h>
+#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/delay.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
+
+enum chips { w83795 };
+
+
+static int reset;
+module_param(reset, bool, 0);
+MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
+
+
+#define W83795_REG_BANKSEL             0x00
+#define W83795_REG_VENDORID            0xfd
+#define W83795_REG_CHIPID              0xfe
+#define W83795_REG_DEVICEID            0xfb
+
+#define W83795_REG_I2C_ADDR            0xfc
+#define W83795_REG_CONFIG              0x01
+#define W83795_REG_CONFIG_CONFIG48     0x04
+
+/* Multi-Function Pin Ctrl Registers */
+#define W83795_REG_VOLT_CTRL1          0x02
+#define W83795_REG_VOLT_CTRL2          0x03
+#define W83795_REG_TEMP_CTRL1          0x04
+#define W83795_REG_TEMP_CTRL2          0x05
+#define W83795_REG_FANIN_CTRL1         0x06
+#define W83795_REG_FANIN_CTRL2         0x07
+#define W83795_REG_VMIGB_CTRL          0x08
+
+#define TEMP_CTRL_DISABLE              0
+#define TEMP_CTRL_TD                   1
+#define TEMP_CTRL_VSEN                 2
+#define TEMP_CTRL_TR                   3
+#define TEMP_CTRL_SHIFT                        4
+#define TEMP_CTRL_HASIN_SHIFT          5
+/* temp mode may effect VSEN17-12 (in20-15) */
+static u16 W83795_REG_TEMP_CTRL[][6] = {
+       /* Disable, TD, VSEN, TR, register shift value, has_in shift num */
+       {0x00, 0x01, 0x02, 0x03, 0, 17},        /* TR1 */
+       {0x00, 0x04, 0x08, 0x0C, 2, 18},        /* TR2 */
+       {0x00, 0x10, 0x20, 0x30, 4, 19},        /* TR3 */
+       {0x00, 0x40, 0x80, 0xC0, 6, 20},        /* TR4 */
+       {0x00, 0x00, 0x02, 0x03, 0, 15},        /* TR5 */
+       {0x00, 0x00, 0x08, 0x0C, 2, 16},        /* TR6 */
+};
+
+#define TEMP_READ                      0
+#define TEMP_CRIT                      1
+#define TEMP_CRIT_HYST                 2
+#define TEMP_WARN                      3
+#define TEMP_WARN_HYST                 4
+/* only crit and crit_hyst affect real-time alarm status
+ * current crit crit_hyst warn warn_hyst */
+static u16 W83795_REG_TEMP[][5] = {
+       {0x21, 0x96, 0x97, 0x98, 0x99}, /* TD1/TR1 */
+       {0x22, 0x9a, 0x9b, 0x9c, 0x9d}, /* TD2/TR2 */
+       {0x23, 0x9e, 0x9f, 0xa0, 0xa1}, /* TD3/TR3 */
+       {0x24, 0xa2, 0xa3, 0xa4, 0xa5}, /* TD4/TR4 */
+       {0x1f, 0xa6, 0xa7, 0xa8, 0xa9}, /* TR5 */
+       {0x20, 0xaa, 0xab, 0xac, 0xad}, /* TR6 */
+};
+
+#define IN_READ                                0
+#define IN_MAX                         1
+#define IN_LOW                         2
+static const u16 W83795_REG_IN[][3] = {
+       /* Current, HL, LL */
+       {0x10, 0x70, 0x71},     /* VSEN1 */
+       {0x11, 0x72, 0x73},     /* VSEN2 */
+       {0x12, 0x74, 0x75},     /* VSEN3 */
+       {0x13, 0x76, 0x77},     /* VSEN4 */
+       {0x14, 0x78, 0x79},     /* VSEN5 */
+       {0x15, 0x7a, 0x7b},     /* VSEN6 */
+       {0x16, 0x7c, 0x7d},     /* VSEN7 */
+       {0x17, 0x7e, 0x7f},     /* VSEN8 */
+       {0x18, 0x80, 0x81},     /* VSEN9 */
+       {0x19, 0x82, 0x83},     /* VSEN10 */
+       {0x1A, 0x84, 0x85},     /* VSEN11 */
+       {0x1B, 0x86, 0x87},     /* VTT */
+       {0x1C, 0x88, 0x89},     /* 3VDD */
+       {0x1D, 0x8a, 0x8b},     /* 3VSB */
+       {0x1E, 0x8c, 0x8d},     /* VBAT */
+       {0x1F, 0xa6, 0xa7},     /* VSEN12 */
+       {0x20, 0xaa, 0xab},     /* VSEN13 */
+       {0x21, 0x96, 0x97},     /* VSEN14 */
+       {0x22, 0x9a, 0x9b},     /* VSEN15 */
+       {0x23, 0x9e, 0x9f},     /* VSEN16 */
+       {0x24, 0xa2, 0xa3},     /* VSEN17 */
+};
+#define W83795_REG_VRLSB               0x3C
+#define VRLSB_SHIFT                    6
+
+static const u8 W83795_REG_IN_HL_LSB[] = {
+       0x8e,   /* VSEN1-4 */
+       0x90,   /* VSEN5-8 */
+       0x92,   /* VSEN9-11 */
+       0x94,   /* VTT, 3VDD, 3VSB, 3VBAT */
+       0xa8,   /* VSEN12 */
+       0xac,   /* VSEN13 */
+       0x98,   /* VSEN14 */
+       0x9c,   /* VSEN15 */
+       0xa0,   /* VSEN16 */
+       0xa4,   /* VSEN17 */
+};
+
+#define IN_LSB_REG(index, type) \
+       (((type) == 1) ? W83795_REG_IN_HL_LSB[(index)] \
+       : (W83795_REG_IN_HL_LSB[(index)] + 1))
+
+#define IN_LSB_REG_NUM                 10
+
+#define IN_LSB_SHIFT                   0
+#define IN_LSB_IDX                     1
+static const u8 IN_LSB_SHIFT_IDX[][2] = {
+       /* High/Low LSB shift, LSB No. */
+       {0x00, 0x00},   /* VSEN1 */
+       {0x02, 0x00},   /* VSEN2 */
+       {0x04, 0x00},   /* VSEN3 */
+       {0x06, 0x00},   /* VSEN4 */
+       {0x00, 0x01},   /* VSEN5 */
+       {0x02, 0x01},   /* VSEN6 */
+       {0x04, 0x01},   /* VSEN7 */
+       {0x06, 0x01},   /* VSEN8 */
+       {0x00, 0x02},   /* VSEN9 */
+       {0x02, 0x02},   /* VSEN10 */
+       {0x04, 0x02},   /* VSEN11 */
+       {0x00, 0x03},   /* VTT */
+       {0x02, 0x03},   /* 3VDD */
+       {0x04, 0x03},   /* 3VSB */
+       {0x06, 0x03},   /* VBAT */
+       {0x06, 0x04},   /* VSEN12 */
+       {0x06, 0x05},   /* VSEN13 */
+       {0x06, 0x06},   /* VSEN14 */
+       {0x06, 0x07},   /* VSEN15 */
+       {0x06, 0x08},   /* VSEN16 */
+       {0x06, 0x09},   /* VSEN17 */
+};
+
+
+/* 3VDD, 3VSB, VBAT * 0.006 */
+#define REST_VLT_BEGIN                 12  /* the 13th volt to 15th */
+#define REST_VLT_END                   14  /* the 13th volt to 15th */
+
+#define W83795_REG_FAN(index)          (0x2E + (index))
+#define W83795_REG_FAN_MIN_HL(index)   (0xB6 + (index))
+#define W83795_REG_FAN_MIN_LSB(index)  (0xC4 + (index) / 2)
+#define W83795_REG_FAN_MIN_LSB_SHIFT(index) \
+       (((index) % 1) ? 4 : 0)
+#define W83795_REG_FAN_CTRL_SHIFT(index) \
+       (((index) > 7) ? ((index) - 8) : (index))
+
+#define W83795_REG_VID_CTRL            0x6A
+
+#define ALARM_BEEP_REG_NUM             6
+#define W83795_REG_ALARM(index)                (0x41 + (index))
+#define W83795_REG_BEEP(index)         (0x50 + (index))
+
+#define W83795_REG_CLR_CHASSIS         0x4D
+
+
+#define W83795_REG_TEMP_NUM            6
+#define W83795_REG_FCMS1               0x201
+#define W83795_REG_FCMS2               0x208
+#define W83795_REG_TFMR(index)         (0x202 + (index))
+#define W83795_REG_FOMC                        0x20F
+#define W83795_REG_FOPFP(index)                (0x218 + (index))
+
+#define W83795_REG_TSS(index)          (0x209 + (index))
+
+#define PWM_OUTPUT                     0
+#define PWM_START                      1
+#define PWM_NONSTOP                    2
+#define PWM_STOP_TIME                  3
+#define PWM_DIV                                4
+#define W83795_REG_PWM(index, nr) \
+       (((nr) == 0 ? 0x210 : \
+         (nr) == 1 ? 0x220 : \
+         (nr) == 2 ? 0x228 : \
+         (nr) == 3 ? 0x230 : 0x218) + (index))
+
+#define W83795_REG_FOPFP_DIV(index) \
+       (((index) < 8) ? ((index) + 1) : \
+        ((index) == 8) ? 12 : \
+        (16 << ((index) - 9)))
+
+#define W83795_REG_FTSH(index)         (0x240 + (index) * 2)
+#define W83795_REG_FTSL(index)         (0x241 + (index) * 2)
+#define W83795_REG_TFTS                        0x250
+
+#define TEMP_PWM_TTTI                  0
+#define TEMP_PWM_CTFS                  1
+#define TEMP_PWM_HCT                   2
+#define TEMP_PWM_HOT                   3
+#define W83795_REG_TTTI(index)         (0x260 + (index))
+#define W83795_REG_CTFS(index)         (0x268 + (index))
+#define W83795_REG_HT(index)           (0x270 + (index))
+
+#define SF4_TEMP                       0
+#define SF4_PWM                                1
+#define W83795_REG_SF4_TEMP(temp_num, index) \
+       (0x280 + 0x10 * (temp_num) + (index))
+#define W83795_REG_SF4_PWM(temp_num, index) \
+       (0x288 + 0x10 * (temp_num) + (index))
+
+#define W83795_REG_DTSC                        0x301
+#define W83795_REG_DTSE                        0x302
+#define W83795_REG_DTS(index)          (0x26 + (index))
+
+#define DTS_CRIT                       0
+#define DTS_CRIT_HYST                  1
+#define DTS_WARN                       2
+#define DTS_WARN_HYST                  3
+#define W83795_REG_DTS_EXT(index)      (0xB2 + (index))
+
+#define SETUP_PWM_DEFAULT              0
+#define SETUP_PWM_UPTIME               1
+#define SETUP_PWM_DOWNTIME             2
+#define W83795_REG_SETUP_PWM(index)    (0x20C + (index))
+
+static inline u16 in_from_reg(u8 index, u16 val)
+{
+       if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
+               return val * 6;
+       else
+               return val * 2;
+}
+
+static inline u16 in_to_reg(u8 index, u16 val)
+{
+       if ((index >= REST_VLT_BEGIN) && (index <= REST_VLT_END))
+               return val / 6;
+       else
+               return val / 2;
+}
+
+static inline unsigned long fan_from_reg(u16 val)
+{
+       if ((val >= 0xff0) || (val == 0))
+               return 0;
+       return 1350000UL / val;
+}
+
+static inline u16 fan_to_reg(long rpm)
+{
+       if (rpm <= 0)
+               return 0x0fff;
+       return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe);
+}
+
+static inline unsigned long time_from_reg(u8 reg)
+{
+       return reg * 100;
+}
+
+static inline u8 time_to_reg(unsigned long val)
+{
+       return SENSORS_LIMIT((val + 50) / 100, 0, 0xff);
+}
+
+static inline long temp_from_reg(s8 reg)
+{
+       return reg * 1000;
+}
+
+static inline s8 temp_to_reg(long val, s8 min, s8 max)
+{
+       return SENSORS_LIMIT((val < 0 ? -val : val) / 1000, min, max);
+}
+
+
+enum chip_types {w83795g, w83795adg};
+
+struct w83795_data {
+       struct device *hwmon_dev;
+       struct mutex update_lock;
+       unsigned long last_updated;     /* In jiffies */
+       enum chip_types chip_type;
+
+       u8 bank;
+
+       u32 has_in;             /* Enable monitor VIN or not */
+       u16 in[21][3];          /* Register value, read/high/low */
+       u8 in_lsb[10][3];       /* LSB Register value, high/low */
+       u8 has_gain;            /* has gain: in17-20 * 8 */
+
+       u16 has_fan;            /* Enable fan14-1 or not */
+       u16 fan[14];            /* Register value combine */
+       u16 fan_min[14];        /* Register value combine */
+
+       u8 has_temp;            /* Enable monitor temp6-1 or not */
+       u8 temp[6][5];          /* current, crit, crit_hyst, warn, warn_hyst */
+       u8 temp_read_vrlsb[6];
+       u8 temp_mode;           /* bit 0: TR mode, bit 1: TD mode */
+       u8 temp_src[3];         /* Register value */
+
+       u8 enable_dts;          /* Enable PECI and SB-TSI,
+                                * bit 0: =1 enable, =0 disable,
+                                * bit 1: =1 AMD SB-TSI, =0 Intel PECI */
+       u8 has_dts;             /* Enable monitor DTS temp */
+       u8 dts[8];              /* Register value */
+       u8 dts_read_vrlsb[8];   /* Register value */
+       u8 dts_ext[4];          /* Register value */
+
+       u8 has_pwm;             /* 795g supports 8 pwm, 795adg only supports 2,
+                                * no config register, only affected by chip
+                                * type */
+       u8 pwm[8][5];           /* Register value, output, start, non stop, stop
+                                * time, div */
+       u8 pwm_fcms[2];         /* Register value */
+       u8 pwm_tfmr[6];         /* Register value */
+       u8 pwm_fomc;            /* Register value */
+
+       u16 target_speed[8];    /* Register value, target speed for speed
+                                * cruise */
+       u8 tol_speed;           /* tolerance of target speed */
+       u8 pwm_temp[6][4];      /* TTTI, CTFS, HCT, HOT */
+       u8 sf4_reg[6][2][7];    /* 6 temp, temp/dcpwm, 7 registers */
+
+       u8 setup_pwm[3];        /* Register value */
+
+       u8 alarms[6];           /* Register value */
+       u8 beeps[6];            /* Register value */
+       u8 beep_enable;
+
+       char valid;
+};
+
+/*
+ * Hardware access
+ */
+
+/* Ignore the possibility that somebody change bank outside the driver
+ * Must be called with data->update_lock held, except during initialization */
+static u8 w83795_read(struct i2c_client *client, u16 reg)
+{
+       struct w83795_data *data = i2c_get_clientdata(client);
+       u8 res = 0xff;
+       u8 new_bank = reg >> 8;
+
+       new_bank |= data->bank & 0xfc;
+       if (data->bank != new_bank) {
+               if (i2c_smbus_write_byte_data
+                   (client, W83795_REG_BANKSEL, new_bank) >= 0)
+                       data->bank = new_bank;
+               else {
+                       dev_err(&client->dev,
+                               "set bank to %d failed, fall back "
+                               "to bank %d, read reg 0x%x error\n",
+                               new_bank, data->bank, reg);
+                       res = 0x0;      /* read 0x0 from the chip */
+                       goto END;
+               }
+       }
+       res = i2c_smbus_read_byte_data(client, reg & 0xff);
+END:
+       return res;
+}
+
+/* Must be called with data->update_lock held, except during initialization */
+static int w83795_write(struct i2c_client *client, u16 reg, u8 value)
+{
+       struct w83795_data *data = i2c_get_clientdata(client);
+       int res;
+       u8 new_bank = reg >> 8;
+
+       new_bank |= data->bank & 0xfc;
+       if (data->bank != new_bank) {
+               res = i2c_smbus_write_byte_data(client, W83795_REG_BANKSEL,
+                                               new_bank);
+               if (res >= 0)
+                       data->bank = new_bank;
+               else {
+                       dev_err(&client->dev,
+                               "set bank to %d failed, fall back "
+                               "to bank %d, write reg 0x%x error\n",
+                               new_bank, data->bank, reg);
+                       goto END;
+               }
+       }
+
+       res = i2c_smbus_write_byte_data(client, reg & 0xff, value);
+END:
+       return res;
+}
+
+static struct w83795_data *w83795_update_device(struct device *dev)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       u16 tmp;
+       int i;
+
+       mutex_lock(&data->update_lock);
+
+       if (!(time_after(jiffies, data->last_updated + HZ * 2)
+             || !data->valid))
+               goto END;
+
+       /* Update the voltages value */
+       for (i = 0; i < ARRAY_SIZE(data->in); i++) {
+               if (!(data->has_in & (1 << i)))
+                       continue;
+               tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
+               tmp |= (w83795_read(client, W83795_REG_VRLSB)
+                       >> VRLSB_SHIFT) & 0x03;
+               data->in[i][IN_READ] = tmp;
+       }
+
+       /* Update fan */
+       for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
+               if (!(data->has_fan & (1 << i)))
+                       continue;
+               data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
+               data->fan[i] |=
+                 (w83795_read(client, W83795_REG_VRLSB >> 4)) & 0x0F;
+       }
+
+       /* Update temperature */
+       for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
+               /* even stop monitor, register still keep value, just read out
+                * it */
+               if (!(data->has_temp & (1 << i))) {
+                       data->temp[i][TEMP_READ] = 0;
+                       data->temp_read_vrlsb[i] = 0;
+                       continue;
+               }
+               data->temp[i][TEMP_READ] =
+                       w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
+               data->temp_read_vrlsb[i] =
+                       w83795_read(client, W83795_REG_VRLSB);
+       }
+
+       /* Update dts temperature */
+       if (data->enable_dts != 0) {
+               for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
+                       if (!(data->has_dts & (1 << i)))
+                               continue;
+                       data->dts[i] =
+                               w83795_read(client, W83795_REG_DTS(i));
+                       data->dts_read_vrlsb[i] =
+                               w83795_read(client, W83795_REG_VRLSB);
+               }
+       }
+
+       /* Update pwm output */
+       for (i = 0; i < data->has_pwm; i++) {
+               data->pwm[i][PWM_OUTPUT] =
+                   w83795_read(client, W83795_REG_PWM(i, PWM_OUTPUT));
+       }
+
+       /* update alarm */
+       for (i = 0; i < ALARM_BEEP_REG_NUM; i++)
+               data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
+
+       data->last_updated = jiffies;
+       data->valid = 1;
+
+END:
+       mutex_unlock(&data->update_lock);
+       return data;
+}
+
+/*
+ * Sysfs attributes
+ */
+
+#define ALARM_STATUS      0
+#define BEEP_ENABLE       1
+static ssize_t
+show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct w83795_data *data = w83795_update_device(dev);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index >> 3;
+       int bit = sensor_attr->index & 0x07;
+       u8 val;
+
+       if (ALARM_STATUS == nr) {
+               val = (data->alarms[index] >> (bit)) & 1;
+       } else {                /* BEEP_ENABLE */
+               val = (data->beeps[index] >> (bit)) & 1;
+       }
+
+       return sprintf(buf, "%u\n", val);
+}
+
+static ssize_t
+store_beep(struct device *dev, struct device_attribute *attr,
+          const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int index = sensor_attr->index >> 3;
+       int shift = sensor_attr->index & 0x07;
+       u8 beep_bit = 1 << shift;
+       unsigned long val;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+       if (val != 0 && val != 1)
+               return -EINVAL;
+
+       mutex_lock(&data->update_lock);
+       data->beeps[index] = w83795_read(client, W83795_REG_BEEP(index));
+       data->beeps[index] &= ~beep_bit;
+       data->beeps[index] |= val << shift;
+       w83795_write(client, W83795_REG_BEEP(index), data->beeps[index]);
+       mutex_unlock(&data->update_lock);
+
+       return count;
+}
+
+static ssize_t
+show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       return sprintf(buf, "%u\n", data->beep_enable);
+}
+
+static ssize_t
+store_beep_enable(struct device *dev, struct device_attribute *attr,
+                 const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       unsigned long val;
+       u8 tmp;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+       if (val != 0 && val != 1)
+               return -EINVAL;
+
+       mutex_lock(&data->update_lock);
+       data->beep_enable = val;
+       tmp = w83795_read(client, W83795_REG_BEEP(5));
+       tmp &= 0x7f;
+       tmp |= val << 7;
+       w83795_write(client, W83795_REG_BEEP(5), tmp);
+       mutex_unlock(&data->update_lock);
+
+       return count;
+}
+
+/* Write any value to clear chassis alarm */
+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 w83795_data *data = i2c_get_clientdata(client);
+       u8 val;
+
+       mutex_lock(&data->update_lock);
+       val = w83795_read(client, W83795_REG_CLR_CHASSIS);
+       val |= 0x80;
+       w83795_write(client, W83795_REG_CLR_CHASSIS, val);
+       mutex_unlock(&data->update_lock);
+       return count;
+}
+
+#define FAN_INPUT     0
+#define FAN_MIN       1
+static ssize_t
+show_fan(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 w83795_data *data = w83795_update_device(dev);
+       u16 val;
+
+       if (FAN_INPUT == nr)
+               val = data->fan[index] & 0x0fff;
+       else
+               val = data->fan_min[index] & 0x0fff;
+
+       return sprintf(buf, "%lu\n", fan_from_reg(val));
+}
+
+static ssize_t
+store_fan_min(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 index = sensor_attr->index;
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       unsigned long val;
+
+       if (strict_strtoul(buf, 10, &val))
+               return -EINVAL;
+       val = fan_to_reg(val);
+
+       mutex_lock(&data->update_lock);
+       data->fan_min[index] = val;
+       w83795_write(client, W83795_REG_FAN_MIN_HL(index), (val >> 4) & 0xff);
+       val &= 0x0f;
+       if (index % 1) {
+               val <<= 4;
+               val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
+                      & 0x0f;
+       } else {
+               val |= w83795_read(client, W83795_REG_FAN_MIN_LSB(index))
+                      & 0xf0;
+       }
+       w83795_write(client, W83795_REG_FAN_MIN_LSB(index), val & 0xff);
+       mutex_unlock(&data->update_lock);
+
+       return count;
+}
+
+static ssize_t
+show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct w83795_data *data = w83795_update_device(dev);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       u16 val;
+
+       switch (nr) {
+       case PWM_STOP_TIME:
+               val = time_from_reg(data->pwm[index][nr]);
+               break;
+       case PWM_DIV:
+               val = W83795_REG_FOPFP_DIV(data->pwm[index][nr] & 0x0f);
+               break;
+       default:
+               val = data->pwm[index][nr];
+               break;
+       }
+
+       return sprintf(buf, "%u\n", val);
+}
+
+static ssize_t
+store_pwm(struct device *dev, struct device_attribute *attr,
+         const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       unsigned long val;
+       int i;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+
+       mutex_lock(&data->update_lock);
+       switch (nr) {
+       case PWM_STOP_TIME:
+               val = time_to_reg(val);
+               break;
+       case PWM_DIV:
+               for (i = 0; i < 16; i++) {
+                       if (W83795_REG_FOPFP_DIV(i) == val) {
+                               val = i;
+                               break;
+                       }
+               }
+               if (i >= 16)
+                       goto err_end;
+               val |= w83795_read(client, W83795_REG_PWM(index, nr)) & 0x80;
+               break;
+       default:
+               val = SENSORS_LIMIT(val, 0, 0xff);
+               break;
+       }
+       w83795_write(client, W83795_REG_PWM(index, nr), val);
+       data->pwm[index][nr] = val & 0xff;
+       mutex_unlock(&data->update_lock);
+       return count;
+err_end:
+       mutex_unlock(&data->update_lock);
+       return -EINVAL;
+}
+
+static ssize_t
+show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       int index = sensor_attr->index;
+       u8 tmp;
+
+       if (1 == (data->pwm_fcms[0] & (1 << index))) {
+               tmp = 2;
+               goto out;
+       }
+       for (tmp = 0; tmp < 6; tmp++) {
+               if (data->pwm_tfmr[tmp] & (1 << index)) {
+                       tmp = 3;
+                       goto out;
+               }
+       }
+       if (data->pwm_fomc & (1 << index))
+               tmp = 0;
+       else
+               tmp = 1;
+
+out:
+       return sprintf(buf, "%u\n", tmp);
+}
+
+static ssize_t
+store_pwm_enable(struct device *dev, struct device_attribute *attr,
+         const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int index = sensor_attr->index;
+       unsigned long val;
+       int i;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+       if (val > 2)
+               return -EINVAL;
+
+       mutex_lock(&data->update_lock);
+       switch (val) {
+       case 0:
+       case 1:
+               data->pwm_fcms[0] &= ~(1 << index);
+               w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
+               for (i = 0; i < 6; i++) {
+                       data->pwm_tfmr[i] &= ~(1 << index);
+                       w83795_write(client, W83795_REG_TFMR(i),
+                               data->pwm_tfmr[i]);
+               }
+               data->pwm_fomc |= 1 << index;
+               data->pwm_fomc ^= val << index;
+               w83795_write(client, W83795_REG_FOMC, data->pwm_fomc);
+               break;
+       case 2:
+               data->pwm_fcms[0] |= (1 << index);
+               w83795_write(client, W83795_REG_FCMS1, data->pwm_fcms[0]);
+               break;
+       }
+       mutex_unlock(&data->update_lock);
+       return count;
+
+       mutex_unlock(&data->update_lock);
+       return -EINVAL;
+}
+
+static ssize_t
+show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       int index = sensor_attr->index;
+       u8 val = index / 2;
+       u8 tmp = data->temp_src[val];
+
+       if (index % 1)
+               val = 4;
+       else
+               val = 0;
+       tmp >>= val;
+       tmp &= 0x0f;
+
+       return sprintf(buf, "%u\n", tmp);
+}
+
+static ssize_t
+store_temp_src(struct device *dev, struct device_attribute *attr,
+         const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int index = sensor_attr->index;
+       unsigned long tmp;
+       u8 val = index / 2;
+
+       if (strict_strtoul(buf, 10, &tmp) < 0)
+               return -EINVAL;
+       tmp = SENSORS_LIMIT(tmp, 0, 15);
+
+       mutex_lock(&data->update_lock);
+       if (index % 1) {
+               tmp <<= 4;
+               data->temp_src[val] &= 0x0f;
+       } else {
+               data->temp_src[val] &= 0xf0;
+       }
+       data->temp_src[val] |= tmp;
+       w83795_write(client, W83795_REG_TSS(val), data->temp_src[val]);
+       mutex_unlock(&data->update_lock);
+
+       return count;
+}
+
+#define TEMP_PWM_ENABLE   0
+#define TEMP_PWM_FAN_MAP  1
+static ssize_t
+show_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
+                    char *buf)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       u8 tmp = 0xff;
+
+       switch (nr) {
+       case TEMP_PWM_ENABLE:
+               tmp = (data->pwm_fcms[1] >> index) & 1;
+               if (tmp)
+                       tmp = 4;
+               else
+                       tmp = 3;
+               break;
+       case TEMP_PWM_FAN_MAP:
+               tmp = data->pwm_tfmr[index];
+               break;
+       }
+
+       return sprintf(buf, "%u\n", tmp);
+}
+
+static ssize_t
+store_temp_pwm_enable(struct device *dev, struct device_attribute *attr,
+         const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       unsigned long tmp;
+
+       if (strict_strtoul(buf, 10, &tmp) < 0)
+               return -EINVAL;
+
+       switch (nr) {
+       case TEMP_PWM_ENABLE:
+               if ((tmp != 3) && (tmp != 4))
+                       return -EINVAL;
+               tmp -= 3;
+               mutex_lock(&data->update_lock);
+               data->pwm_fcms[1] &= ~(1 << index);
+               data->pwm_fcms[1] |= tmp << index;
+               w83795_write(client, W83795_REG_FCMS2, data->pwm_fcms[1]);
+               mutex_unlock(&data->update_lock);
+               break;
+       case TEMP_PWM_FAN_MAP:
+               mutex_lock(&data->update_lock);
+               tmp = SENSORS_LIMIT(tmp, 0, 0xff);
+               w83795_write(client, W83795_REG_TFMR(index), tmp);
+               data->pwm_tfmr[index] = tmp;
+               mutex_unlock(&data->update_lock);
+               break;
+       }
+       return count;
+}
+
+#define FANIN_TARGET   0
+#define FANIN_TOL      1
+static ssize_t
+show_fanin(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       u16 tmp = 0;
+
+       switch (nr) {
+       case FANIN_TARGET:
+               tmp = fan_from_reg(data->target_speed[index]);
+               break;
+       case FANIN_TOL:
+               tmp = data->tol_speed;
+               break;
+       }
+
+       return sprintf(buf, "%u\n", tmp);
+}
+
+static ssize_t
+store_fanin(struct device *dev, struct device_attribute *attr,
+         const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       unsigned long val;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+
+       mutex_lock(&data->update_lock);
+       switch (nr) {
+       case FANIN_TARGET:
+               val = fan_to_reg(SENSORS_LIMIT(val, 0, 0xfff));
+               w83795_write(client, W83795_REG_FTSH(index), (val >> 4) & 0xff);
+               w83795_write(client, W83795_REG_FTSL(index), (val << 4) & 0xf0);
+               data->target_speed[index] = val;
+               break;
+       case FANIN_TOL:
+               val = SENSORS_LIMIT(val, 0, 0x3f);
+               w83795_write(client, W83795_REG_TFTS, val);
+               data->tol_speed = val;
+               break;
+       }
+       mutex_unlock(&data->update_lock);
+
+       return count;
+}
+
+
+static ssize_t
+show_temp_pwm(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       long tmp = temp_from_reg(data->pwm_temp[index][nr]);
+
+       return sprintf(buf, "%ld\n", tmp);
+}
+
+static ssize_t
+store_temp_pwm(struct device *dev, struct device_attribute *attr,
+         const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       unsigned long val;
+       u8 tmp;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+       val /= 1000;
+
+       mutex_lock(&data->update_lock);
+       switch (nr) {
+       case TEMP_PWM_TTTI:
+               val = SENSORS_LIMIT(val, 0, 0x7f);
+               w83795_write(client, W83795_REG_TTTI(index), val);
+               break;
+       case TEMP_PWM_CTFS:
+               val = SENSORS_LIMIT(val, 0, 0x7f);
+               w83795_write(client, W83795_REG_CTFS(index), val);
+               break;
+       case TEMP_PWM_HCT:
+               val = SENSORS_LIMIT(val, 0, 0x0f);
+               tmp = w83795_read(client, W83795_REG_HT(index));
+               tmp &= 0x0f;
+               tmp |= (val << 4) & 0xf0;
+               w83795_write(client, W83795_REG_HT(index), tmp);
+               break;
+       case TEMP_PWM_HOT:
+               val = SENSORS_LIMIT(val, 0, 0x0f);
+               tmp = w83795_read(client, W83795_REG_HT(index));
+               tmp &= 0xf0;
+               tmp |= val & 0x0f;
+               w83795_write(client, W83795_REG_HT(index), tmp);
+               break;
+       }
+       data->pwm_temp[index][nr] = val;
+       mutex_unlock(&data->update_lock);
+
+       return count;
+}
+
+static ssize_t
+show_sf4_pwm(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+
+       return sprintf(buf, "%u\n", data->sf4_reg[index][SF4_PWM][nr]);
+}
+
+static ssize_t
+store_sf4_pwm(struct device *dev, struct device_attribute *attr,
+         const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       unsigned long val;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+
+       mutex_lock(&data->update_lock);
+       w83795_write(client, W83795_REG_SF4_PWM(index, nr), val);
+       data->sf4_reg[index][SF4_PWM][nr] = val;
+       mutex_unlock(&data->update_lock);
+
+       return count;
+}
+
+static ssize_t
+show_sf4_temp(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+
+       return sprintf(buf, "%u\n",
+               (data->sf4_reg[index][SF4_TEMP][nr]) * 1000);
+}
+
+static ssize_t
+store_sf4_temp(struct device *dev, struct device_attribute *attr,
+         const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int nr = sensor_attr->nr;
+       int index = sensor_attr->index;
+       unsigned long val;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+       val /= 1000;
+
+       mutex_lock(&data->update_lock);
+       w83795_write(client, W83795_REG_SF4_TEMP(index, nr), val);
+       data->sf4_reg[index][SF4_TEMP][nr] = val;
+       mutex_unlock(&data->update_lock);
+
+       return count;
+}
+
+
+static ssize_t
+show_temp(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 w83795_data *data = w83795_update_device(dev);
+       long temp = temp_from_reg(data->temp[index][nr] & 0x7f);
+
+       if (TEMP_READ == nr)
+               temp += ((data->temp_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03)
+                       * 250;
+       if (data->temp[index][nr] & 0x80)
+               temp = -temp;
+       return sprintf(buf, "%ld\n", temp);
+}
+
+static ssize_t
+store_temp(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 w83795_data *data = i2c_get_clientdata(client);
+       long tmp;
+
+       if (strict_strtol(buf, 10, &tmp) < 0)
+               return -EINVAL;
+
+       mutex_lock(&data->update_lock);
+       data->temp[index][nr] = temp_to_reg(tmp, -128, 127);
+       w83795_write(client, W83795_REG_TEMP[index][nr], data->temp[index][nr]);
+       mutex_unlock(&data->update_lock);
+       return count;
+}
+
+
+static ssize_t
+show_dts_mode(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int index = sensor_attr->index;
+       u8 tmp;
+
+       if (data->enable_dts == 0)
+               return sprintf(buf, "%d\n", 0);
+
+       if ((data->has_dts >> index) & 0x01) {
+               if (data->enable_dts & 2)
+                       tmp = 5;
+               else
+                       tmp = 6;
+       } else {
+               tmp = 0;
+       }
+
+       return sprintf(buf, "%d\n", tmp);
+}
+
+static ssize_t
+show_dts(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int index = sensor_attr->index;
+       struct w83795_data *data = w83795_update_device(dev);
+       long temp = temp_from_reg(data->dts[index] & 0x7f);
+
+       temp += ((data->dts_read_vrlsb[index] >> VRLSB_SHIFT) & 0x03) * 250;
+       if (data->dts[index] & 0x80)
+               temp = -temp;
+       return sprintf(buf, "%ld\n", temp);
+}
+
+static ssize_t
+show_dts_ext(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;
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       long temp = temp_from_reg(data->dts_ext[nr] & 0x7f);
+
+       if (data->dts_ext[nr] & 0x80)
+               temp = -temp;
+       return sprintf(buf, "%ld\n", temp);
+}
+
+static ssize_t
+store_dts_ext(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;
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       long tmp;
+
+       if (strict_strtol(buf, 10, &tmp) < 0)
+               return -EINVAL;
+
+       mutex_lock(&data->update_lock);
+       data->dts_ext[nr] = temp_to_reg(tmp, -128, 127);
+       w83795_write(client, W83795_REG_DTS_EXT(nr), data->dts_ext[nr]);
+       mutex_unlock(&data->update_lock);
+       return count;
+}
+
+
+/*
+       Type 3:  Thermal diode
+       Type 4:  Thermistor
+
+       Temp5-6, default TR
+       Temp1-4, default TD
+*/
+
+static ssize_t
+show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int index = sensor_attr->index;
+       u8 tmp;
+
+       if (data->has_temp >> index & 0x01) {
+               if (data->temp_mode >> index & 0x01)
+                       tmp = 3;
+               else
+                       tmp = 4;
+       } else {
+               tmp = 0;
+       }
+
+       return sprintf(buf, "%d\n", tmp);
+}
+
+static ssize_t
+store_temp_mode(struct device *dev, struct device_attribute *attr,
+               const char *buf, size_t count)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct sensor_device_attribute_2 *sensor_attr =
+           to_sensor_dev_attr_2(attr);
+       int index = sensor_attr->index;
+       unsigned long val;
+       u8 tmp;
+       u32 mask;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+       if ((val != 4) && (val != 3))
+               return -EINVAL;
+       if ((index > 3) && (val == 3))
+               return -EINVAL;
+
+       mutex_lock(&data->update_lock);
+       if (val == 3) {
+               val = TEMP_CTRL_TD;
+               data->has_temp |= 1 << index;
+               data->temp_mode |= 1 << index;
+       } else if (val == 4) {
+               val = TEMP_CTRL_TR;
+               data->has_temp |= 1 << index;
+               tmp = 1 << index;
+               data->temp_mode &= ~tmp;
+       }
+
+       if (index > 3)
+               tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
+       else
+               tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
+
+       mask = 0x03 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_SHIFT];
+       tmp &= ~mask;
+       tmp |= W83795_REG_TEMP_CTRL[index][val];
+
+       mask = 1 << W83795_REG_TEMP_CTRL[index][TEMP_CTRL_HASIN_SHIFT];
+       data->has_in &= ~mask;
+
+       if (index > 3)
+               w83795_write(client, W83795_REG_TEMP_CTRL1, tmp);
+       else
+               w83795_write(client, W83795_REG_TEMP_CTRL2, tmp);
+
+       mutex_unlock(&data->update_lock);
+       return count;
+}
+
+
+/* show/store VIN */
+static ssize_t
+show_in(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 w83795_data *data = w83795_update_device(dev);
+       u16 val = data->in[index][nr];
+       u8 lsb_idx;
+
+       switch (nr) {
+       case IN_READ:
+               /* calculate this value again by sensors as sensors3.conf */
+               if ((index >= 17) &&
+                   ((data->has_gain >> (index - 17)) & 1))
+                       val *= 8;
+               break;
+       case IN_MAX:
+       case IN_LOW:
+               lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
+               val <<= 2;
+               val |= (data->in_lsb[lsb_idx][nr] >>
+                       IN_LSB_SHIFT_IDX[lsb_idx][IN_LSB_SHIFT]) & 0x03;
+               if ((index >= 17) &&
+                   ((data->has_gain >> (index - 17)) & 1))
+                       val *= 8;
+               break;
+       }
+       val = in_from_reg(index, val);
+
+       return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t
+store_in(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 w83795_data *data = i2c_get_clientdata(client);
+       unsigned long val;
+       u8 tmp;
+       u8 lsb_idx;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+       val = in_to_reg(index, val);
+
+       if ((index >= 17) &&
+           ((data->has_gain >> (index - 17)) & 1))
+               val /= 8;
+       val = SENSORS_LIMIT(val, 0, 0x3FF);
+       mutex_lock(&data->update_lock);
+
+       lsb_idx = IN_LSB_SHIFT_IDX[index][IN_LSB_IDX];
+       tmp = w83795_read(client, IN_LSB_REG(lsb_idx, nr));
+       tmp &= ~(0x03 << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT]);
+       tmp |= (val & 0x03) << IN_LSB_SHIFT_IDX[index][IN_LSB_SHIFT];
+       w83795_write(client, IN_LSB_REG(lsb_idx, nr), tmp);
+       data->in_lsb[lsb_idx][nr] = tmp;
+
+       tmp = (val >> 2) & 0xff;
+       w83795_write(client, W83795_REG_IN[index][nr], tmp);
+       data->in[index][nr] = tmp;
+
+       mutex_unlock(&data->update_lock);
+       return count;
+}
+
+
+static ssize_t
+show_sf_setup(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;
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       u16 val = data->setup_pwm[nr];
+
+       switch (nr) {
+       case SETUP_PWM_UPTIME:
+       case SETUP_PWM_DOWNTIME:
+               val = time_from_reg(val);
+               break;
+       }
+
+       return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t
+store_sf_setup(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;
+       struct i2c_client *client = to_i2c_client(dev);
+       struct w83795_data *data = i2c_get_clientdata(client);
+       unsigned long val;
+
+       if (strict_strtoul(buf, 10, &val) < 0)
+               return -EINVAL;
+
+       switch (nr) {
+       case SETUP_PWM_DEFAULT:
+               val = SENSORS_LIMIT(val, 0, 0xff);
+               break;
+       case SETUP_PWM_UPTIME:
+       case SETUP_PWM_DOWNTIME:
+               val = time_to_reg(val);
+               if (val == 0)
+                       return -EINVAL;
+               break;
+       }
+
+       mutex_lock(&data->update_lock);
+       data->setup_pwm[nr] = val;
+       w83795_write(client, W83795_REG_SETUP_PWM(nr), val);
+       mutex_unlock(&data->update_lock);
+       return count;
+}
+
+
+#define NOT_USED                       -1
+
+#define SENSOR_ATTR_IN(index)          \
+       SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL,        \
+               IN_READ, index), \
+       SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in,      \
+               store_in, IN_MAX, index),                               \
+       SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in,      \
+               store_in, IN_LOW, index),                               \
+       SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep,      \
+               NULL, ALARM_STATUS, index + ((index > 14) ? 1 : 0)), \
+       SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO,              \
+               show_alarm_beep, store_beep, BEEP_ENABLE,               \
+               index + ((index > 14) ? 1 : 0))
+
+#define SENSOR_ATTR_FAN(index)                                         \
+       SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan,            \
+               NULL, FAN_INPUT, index - 1), \
+       SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO,              \
+               show_fan, store_fan_min, FAN_MIN, index - 1),   \
+       SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep,     \
+               NULL, ALARM_STATUS, index + 31),                        \
+       SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO,             \
+               show_alarm_beep, store_beep, BEEP_ENABLE, index + 31)
+
+#define SENSOR_ATTR_PWM(index)                                         \
+       SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm,          \
+               store_pwm, PWM_OUTPUT, index - 1),                      \
+       SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO,          \
+               show_pwm, store_pwm, PWM_NONSTOP, index - 1),           \
+       SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO,            \
+               show_pwm, store_pwm, PWM_START, index - 1),             \
+       SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO,        \
+               show_pwm, store_pwm, PWM_STOP_TIME, index - 1),  \
+       SENSOR_ATTR_2(fan##index##_div, S_IWUSR | S_IRUGO,      \
+               show_pwm, store_pwm, PWM_DIV, index - 1),        \
+       SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO,           \
+               show_pwm_enable, store_pwm_enable, NOT_USED, index - 1)
+
+#define SENSOR_ATTR_FANIN_TARGET(index)                                        \
+       SENSOR_ATTR_2(speed_cruise##index##_target, S_IWUSR | S_IRUGO, \
+               show_fanin, store_fanin, FANIN_TARGET, index - 1)
+
+#define SENSOR_ATTR_DTS(index)                                         \
+       SENSOR_ATTR_2(temp##index##_type, S_IRUGO ,             \
+               show_dts_mode, NULL, NOT_USED, index - 7),      \
+       SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_dts,           \
+               NULL, NOT_USED, index - 7),                             \
+       SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_dts_ext, \
+               store_dts_ext, DTS_CRIT, NOT_USED),                     \
+       SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
+               show_dts_ext, store_dts_ext, DTS_CRIT_HYST, NOT_USED),  \
+       SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_dts_ext, \
+               store_dts_ext, DTS_WARN, NOT_USED),                     \
+       SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR,       \
+               show_dts_ext, store_dts_ext, DTS_WARN_HYST, NOT_USED),  \
+       SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
+               show_alarm_beep, NULL, ALARM_STATUS, index + 17),       \
+       SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
+               show_alarm_beep, store_beep, BEEP_ENABLE, index + 17)
+
+#define SENSOR_ATTR_TEMP(index)                                                \
+       SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR,            \
+               show_temp_mode, store_temp_mode, NOT_USED, index - 1),  \
+       SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp,          \
+               NULL, TEMP_READ, index - 1),                            \
+       SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp,  \
+               store_temp, TEMP_CRIT, index - 1),                      \
+       SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR,        \
+               show_temp, store_temp, TEMP_CRIT_HYST, index - 1),      \
+       SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \
+               store_temp, TEMP_WARN, index - 1),                      \
+       SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR,       \
+               show_temp, store_temp, TEMP_WARN_HYST, index - 1),      \
+       SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO,                     \
+               show_alarm_beep, NULL, ALARM_STATUS,                    \
+               index + (index > 4 ? 11 : 17)),                         \
+       SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO,            \
+               show_alarm_beep, store_beep, BEEP_ENABLE,               \
+               index + (index > 4 ? 11 : 17)),                         \
+       SENSOR_ATTR_2(temp##index##_source_sel, S_IWUSR | S_IRUGO,      \
+               show_temp_src, store_temp_src, NOT_USED, index - 1),    \
+       SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO,      \
+               show_temp_pwm_enable, store_temp_pwm_enable,            \
+               TEMP_PWM_ENABLE, index - 1),                            \
+       SENSOR_ATTR_2(temp##index##_auto_channels_pwm, S_IWUSR | S_IRUGO, \
+               show_temp_pwm_enable, store_temp_pwm_enable,            \
+               TEMP_PWM_FAN_MAP, index - 1),                           \
+       SENSOR_ATTR_2(thermal_cruise##index, S_IWUSR | S_IRUGO,         \
+               show_temp_pwm, store_temp_pwm, TEMP_PWM_TTTI, index - 1), \
+       SENSOR_ATTR_2(temp##index##_crit, S_IWUSR | S_IRUGO,            \
+               show_temp_pwm, store_temp_pwm, TEMP_PWM_CTFS, index - 1), \
+       SENSOR_ATTR_2(temp##index##_crit_hyst, S_IWUSR | S_IRUGO,       \
+               show_temp_pwm, store_temp_pwm, TEMP_PWM_HCT, index - 1), \
+       SENSOR_ATTR_2(temp##index##_operation_hyst, S_IWUSR | S_IRUGO,  \
+               show_temp_pwm, store_temp_pwm, TEMP_PWM_HOT, index - 1), \
+       SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \
+               show_sf4_pwm, store_sf4_pwm, 0, index - 1),             \
+       SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \
+               show_sf4_pwm, store_sf4_pwm, 1, index - 1),             \
+       SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \
+               show_sf4_pwm, store_sf4_pwm, 2, index - 1),             \
+       SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \
+               show_sf4_pwm, store_sf4_pwm, 3, index - 1),             \
+       SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \
+               show_sf4_pwm, store_sf4_pwm, 4, index - 1),             \
+       SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \
+               show_sf4_pwm, store_sf4_pwm, 5, index - 1),             \
+       SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \
+               show_sf4_pwm, store_sf4_pwm, 6, index - 1),             \
+       SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\
+               show_sf4_temp, store_sf4_temp, 0, index - 1),           \
+       SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\
+               show_sf4_temp, store_sf4_temp, 1, index - 1),           \
+       SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\
+               show_sf4_temp, store_sf4_temp, 2, index - 1),           \
+       SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\
+               show_sf4_temp, store_sf4_temp, 3, index - 1),           \
+       SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\
+               show_sf4_temp, store_sf4_temp, 4, index - 1),           \
+       SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\
+               show_sf4_temp, store_sf4_temp, 5, index - 1),           \
+       SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\
+               show_sf4_temp, store_sf4_temp, 6, index - 1)
+
+
+static struct sensor_device_attribute_2 w83795_in[] = {
+       SENSOR_ATTR_IN(0),
+       SENSOR_ATTR_IN(1),
+       SENSOR_ATTR_IN(2),
+       SENSOR_ATTR_IN(3),
+       SENSOR_ATTR_IN(4),
+       SENSOR_ATTR_IN(5),
+       SENSOR_ATTR_IN(6),
+       SENSOR_ATTR_IN(7),
+       SENSOR_ATTR_IN(8),
+       SENSOR_ATTR_IN(9),
+       SENSOR_ATTR_IN(10),
+       SENSOR_ATTR_IN(11),
+       SENSOR_ATTR_IN(12),
+       SENSOR_ATTR_IN(13),
+       SENSOR_ATTR_IN(14),
+       SENSOR_ATTR_IN(15),
+       SENSOR_ATTR_IN(16),
+       SENSOR_ATTR_IN(17),
+       SENSOR_ATTR_IN(18),
+       SENSOR_ATTR_IN(19),
+       SENSOR_ATTR_IN(20),
+};
+
+static struct sensor_device_attribute_2 w83795_fan[] = {
+       SENSOR_ATTR_FAN(1),
+       SENSOR_ATTR_FAN(2),
+       SENSOR_ATTR_FAN(3),
+       SENSOR_ATTR_FAN(4),
+       SENSOR_ATTR_FAN(5),
+       SENSOR_ATTR_FAN(6),
+       SENSOR_ATTR_FAN(7),
+       SENSOR_ATTR_FAN(8),
+       SENSOR_ATTR_FAN(9),
+       SENSOR_ATTR_FAN(10),
+       SENSOR_ATTR_FAN(11),
+       SENSOR_ATTR_FAN(12),
+       SENSOR_ATTR_FAN(13),
+       SENSOR_ATTR_FAN(14),
+};
+
+static struct sensor_device_attribute_2 w83795_temp[] = {
+       SENSOR_ATTR_TEMP(1),
+       SENSOR_ATTR_TEMP(2),
+       SENSOR_ATTR_TEMP(3),
+       SENSOR_ATTR_TEMP(4),
+       SENSOR_ATTR_TEMP(5),
+       SENSOR_ATTR_TEMP(6),
+};
+
+static struct sensor_device_attribute_2 w83795_dts[] = {
+       SENSOR_ATTR_DTS(7),
+       SENSOR_ATTR_DTS(8),
+       SENSOR_ATTR_DTS(9),
+       SENSOR_ATTR_DTS(10),
+       SENSOR_ATTR_DTS(11),
+       SENSOR_ATTR_DTS(12),
+       SENSOR_ATTR_DTS(13),
+       SENSOR_ATTR_DTS(14),
+};
+
+static struct sensor_device_attribute_2 w83795_static[] = {
+       SENSOR_ATTR_FANIN_TARGET(1),
+       SENSOR_ATTR_FANIN_TARGET(2),
+       SENSOR_ATTR_FANIN_TARGET(3),
+       SENSOR_ATTR_FANIN_TARGET(4),
+       SENSOR_ATTR_FANIN_TARGET(5),
+       SENSOR_ATTR_FANIN_TARGET(6),
+       SENSOR_ATTR_FANIN_TARGET(7),
+       SENSOR_ATTR_FANIN_TARGET(8),
+       SENSOR_ATTR_PWM(1),
+       SENSOR_ATTR_PWM(2),
+};
+
+/* all registers existed in 795g than 795adg,
+ * like PWM3 - PWM8 */
+static struct sensor_device_attribute_2 w83795_left_reg[] = {
+       SENSOR_ATTR_PWM(3),
+       SENSOR_ATTR_PWM(4),
+       SENSOR_ATTR_PWM(5),
+       SENSOR_ATTR_PWM(6),
+       SENSOR_ATTR_PWM(7),
+       SENSOR_ATTR_PWM(8),
+};
+
+static struct sensor_device_attribute_2 sda_single_files[] = {
+       SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
+                     store_chassis_clear, ALARM_STATUS, 46),
+       SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable,
+                     store_beep_enable, NOT_USED, NOT_USED),
+       SENSOR_ATTR_2(speed_cruise_tolerance, S_IWUSR | S_IRUGO, show_fanin,
+               store_fanin, FANIN_TOL, NOT_USED),
+       SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup,
+                     store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED),
+       SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup,
+                     store_sf_setup, SETUP_PWM_UPTIME, NOT_USED),
+       SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup,
+                     store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED),
+};
+
+/*
+ * Driver interface
+ */
+
+static void w83795_init_client(struct i2c_client *client)
+{
+       if (reset)
+               w83795_write(client, W83795_REG_CONFIG, 0x80);
+
+       /* Start monitoring */
+       w83795_write(client, W83795_REG_CONFIG,
+                    w83795_read(client, W83795_REG_CONFIG) | 0x01);
+}
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int w83795_detect(struct i2c_client *client,
+                        struct i2c_board_info *info)
+{
+       u8 tmp, bank;
+       struct i2c_adapter *adapter = client->adapter;
+       unsigned short address = client->addr;
+
+       if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+               return -ENODEV;
+       bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
+
+       tmp = bank & 0x80 ? 0x5c : 0xa3;
+       /* Check Nuvoton vendor ID */
+       if (tmp != i2c_smbus_read_byte_data(client,
+                                               W83795_REG_VENDORID)) {
+               pr_debug("w83795: Detection failed at check "
+                        "vendor id\n");
+               return -ENODEV;
+       }
+
+       /* If Nuvoton chip, address of chip and W83795_REG_I2C_ADDR
+          should match */
+       if ((bank & 0x07) == 0
+        && (i2c_smbus_read_byte_data(client, W83795_REG_I2C_ADDR) & 0x7f) !=
+           address) {
+               pr_debug("w83795: Detection failed at check "
+                        "i2c addr\n");
+               return -ENODEV;
+       }
+
+       /* Determine the chip type now */
+       if (0x79 != i2c_smbus_read_byte_data(client,
+                                            W83795_REG_CHIPID)) {
+               pr_debug("w83795: Detection failed at check "
+                        "chip id\n");
+               return -ENODEV;
+       }
+
+#if 0
+       /* Check 795 chip type: 795G or 795ADG */
+       if (W83795_REG_CONFIG_CONFIG48 &
+                 w83795_read(client, W83795_REG_CONFIG)) {
+               data->chip_type = w83795adg;
+       } else {
+               data->chip_type = w83795g;
+       }
+#endif
+
+       /* Fill in the remaining client fields and put into the global list */
+       strlcpy(info->type, "w83795", I2C_NAME_SIZE);
+
+       return 0;
+}
+
+static int w83795_probe(struct i2c_client *client,
+                       const struct i2c_device_id *id)
+{
+       int i;
+       u8 tmp;
+       struct device *dev = &client->dev;
+       struct w83795_data *data;
+       int err = 0;
+
+       data = kzalloc(sizeof(struct w83795_data), GFP_KERNEL);
+       if (!data) {
+               err = -ENOMEM;
+               goto exit;
+       }
+
+       i2c_set_clientdata(client, data);
+       data->bank = i2c_smbus_read_byte_data(client, W83795_REG_BANKSEL);
+       mutex_init(&data->update_lock);
+
+       /* Initialize the chip */
+       w83795_init_client(client);
+
+       /* Check 795 chip type: 795G or 795ADG */
+       if (W83795_REG_CONFIG_CONFIG48 &
+                 w83795_read(client, W83795_REG_CONFIG)) {
+               data->chip_type = w83795adg;
+       } else {
+               data->chip_type = w83795g;
+       }
+
+       data->has_in = w83795_read(client, W83795_REG_VOLT_CTRL1);
+       data->has_in |= w83795_read(client, W83795_REG_VOLT_CTRL2) << 8;
+       /* VSEN11-9 not for 795adg */
+       if (data->chip_type == w83795adg)
+               data->has_in &= 0xf8ff;
+       data->has_fan = w83795_read(client, W83795_REG_FANIN_CTRL1);
+       data->has_fan |= w83795_read(client, W83795_REG_FANIN_CTRL2) << 8;
+
+       /* VDSEN12-17 and TR1-6, TD1-4 use same register */
+       tmp = w83795_read(client, W83795_REG_TEMP_CTRL1);
+       if (tmp & 0x20)
+               data->enable_dts = 1;
+       else
+               data->enable_dts = 0;
+       data->has_temp = 0;
+       data->temp_mode = 0;
+       if (tmp & 0x08) {
+               if (tmp & 0x04)
+                       data->has_temp |= 0x20;
+               else
+                       data->has_in |= 0x10000;
+       }
+       if (tmp & 0x02) {
+               if (tmp & 0x01)
+                       data->has_temp |= 0x10;
+               else
+                       data->has_in |= 0x8000;
+       }
+       tmp = w83795_read(client, W83795_REG_TEMP_CTRL2);
+       if (tmp & 0x40) {
+               data->has_temp |= 0x08;
+               if (!(tmp & 0x80))
+                       data->temp_mode |= 0x08;
+       } else if (tmp & 0x80) {
+               data->has_in |= 0x100000;
+       }
+       if (tmp & 0x10) {
+               data->has_temp |= 0x04;
+               if (!(tmp & 0x20))
+                       data->temp_mode |= 0x04;
+       } else if (tmp & 0x20) {
+               data->has_in |= 0x80000;
+       }
+       if (tmp & 0x04) {
+               data->has_temp |= 0x02;
+               if (!(tmp & 0x08))
+                       data->temp_mode |= 0x02;
+       } else if (tmp & 0x08) {
+               data->has_in |= 0x40000;
+       }
+       if (tmp & 0x01) {
+               data->has_temp |= 0x01;
+               if (!(tmp & 0x02))
+                       data->temp_mode |= 0x01;
+       } else if (tmp & 0x02) {
+               data->has_in |= 0x20000;
+       }
+
+       /* Check DTS enable status */
+       if (data->enable_dts == 0) {
+               data->has_dts = 0;
+       } else {
+               if (1 & w83795_read(client, W83795_REG_DTSC))
+                       data->enable_dts |= 2;
+               data->has_dts = w83795_read(client, W83795_REG_DTSE);
+       }
+
+       /* First update the voltages measured value and limits */
+       for (i = 0; i < ARRAY_SIZE(data->in); i++) {
+               if (!(data->has_in & (1 << i)))
+                       continue;
+               data->in[i][IN_MAX] =
+                       w83795_read(client, W83795_REG_IN[i][IN_MAX]);
+               data->in[i][IN_LOW] =
+                       w83795_read(client, W83795_REG_IN[i][IN_LOW]);
+               tmp = w83795_read(client, W83795_REG_IN[i][IN_READ]) << 2;
+               tmp |= (w83795_read(client, W83795_REG_VRLSB)
+                       >> VRLSB_SHIFT) & 0x03;
+               data->in[i][IN_READ] = tmp;
+       }
+       for (i = 0; i < IN_LSB_REG_NUM; i++) {
+               data->in_lsb[i][IN_MAX] =
+                       w83795_read(client, IN_LSB_REG(i, IN_MAX));
+               data->in_lsb[i][IN_LOW] =
+                       w83795_read(client, IN_LSB_REG(i, IN_LOW));
+       }
+       data->has_gain = w83795_read(client, W83795_REG_VMIGB_CTRL) & 0x0f;
+
+       /* First update fan and limits */
+       for (i = 0; i < ARRAY_SIZE(data->fan); i++) {
+               if (!(data->has_fan & (1 << i)))
+                       continue;
+               data->fan_min[i] =
+                       w83795_read(client, W83795_REG_FAN_MIN_HL(i)) << 4;
+               data->fan_min[i] |=
+                 (w83795_read(client, W83795_REG_FAN_MIN_LSB(i) >>
+                       W83795_REG_FAN_MIN_LSB_SHIFT(i))) & 0x0F;
+               data->fan[i] = w83795_read(client, W83795_REG_FAN(i)) << 4;
+               data->fan[i] |=
+                 (w83795_read(client, W83795_REG_VRLSB >> 4)) & 0x0F;
+       }
+
+       /* temperature and limits */
+       for (i = 0; i < ARRAY_SIZE(data->temp); i++) {
+               if (!(data->has_temp & (1 << i)))
+                       continue;
+               data->temp[i][TEMP_CRIT] =
+                       w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT]);
+               data->temp[i][TEMP_CRIT_HYST] =
+                       w83795_read(client, W83795_REG_TEMP[i][TEMP_CRIT_HYST]);
+               data->temp[i][TEMP_WARN] =
+                       w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN]);
+               data->temp[i][TEMP_WARN_HYST] =
+                       w83795_read(client, W83795_REG_TEMP[i][TEMP_WARN_HYST]);
+               data->temp[i][TEMP_READ] =
+                       w83795_read(client, W83795_REG_TEMP[i][TEMP_READ]);
+               data->temp_read_vrlsb[i] =
+                       w83795_read(client, W83795_REG_VRLSB);
+       }
+
+       /* dts temperature and limits */
+       if (data->enable_dts != 0) {
+               data->dts_ext[DTS_CRIT] =
+                       w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT));
+               data->dts_ext[DTS_CRIT_HYST] =
+                       w83795_read(client, W83795_REG_DTS_EXT(DTS_CRIT_HYST));
+               data->dts_ext[DTS_WARN] =
+                       w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN));
+               data->dts_ext[DTS_WARN_HYST] =
+                       w83795_read(client, W83795_REG_DTS_EXT(DTS_WARN_HYST));
+               for (i = 0; i < ARRAY_SIZE(data->dts); i++) {
+                       if (!(data->has_dts & (1 << i)))
+                               continue;
+                       data->dts[i] = w83795_read(client, W83795_REG_DTS(i));
+                       data->dts_read_vrlsb[i] =
+                               w83795_read(client, W83795_REG_VRLSB);
+               }
+       }
+
+       /* First update temp source selction */
+       for (i = 0; i < 3; i++)
+               data->temp_src[i] = w83795_read(client, W83795_REG_TSS(i));
+
+       /* pwm and smart fan */
+       if (data->chip_type == w83795g)
+               data->has_pwm = 8;
+       else
+               data->has_pwm = 2;
+       data->pwm_fcms[0] = w83795_read(client, W83795_REG_FCMS1);
+       data->pwm_fcms[1] = w83795_read(client, W83795_REG_FCMS2);
+       /* w83795adg only support pwm2-0 */
+       for (i = 0; i < W83795_REG_TEMP_NUM; i++)
+               data->pwm_tfmr[i] = w83795_read(client, W83795_REG_TFMR(i));
+       data->pwm_fomc = w83795_read(client, W83795_REG_FOMC);
+       for (i = 0; i < data->has_pwm; i++) {
+               for (tmp = 0; tmp < 5; tmp++) {
+                       data->pwm[i][tmp] =
+                               w83795_read(client, W83795_REG_PWM(i, tmp));
+               }
+       }
+       for (i = 0; i < 8; i++) {
+               data->target_speed[i] =
+                       w83795_read(client, W83795_REG_FTSH(i)) << 4;
+               data->target_speed[i] |=
+                       w83795_read(client, W83795_REG_FTSL(i)) >> 4;
+       }
+       data->tol_speed = w83795_read(client, W83795_REG_TFTS) & 0x3f;
+
+       for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
+               data->pwm_temp[i][TEMP_PWM_TTTI] =
+                       w83795_read(client, W83795_REG_TTTI(i)) & 0x7f;
+               data->pwm_temp[i][TEMP_PWM_CTFS] =
+                       w83795_read(client, W83795_REG_CTFS(i));
+               tmp = w83795_read(client, W83795_REG_HT(i));
+               data->pwm_temp[i][TEMP_PWM_HCT] = (tmp >> 4) & 0x0f;
+               data->pwm_temp[i][TEMP_PWM_HOT] = tmp & 0x0f;
+       }
+       for (i = 0; i < W83795_REG_TEMP_NUM; i++) {
+               for (tmp = 0; tmp < 7; tmp++) {
+                       data->sf4_reg[i][SF4_TEMP][tmp] =
+                               w83795_read(client,
+                                           W83795_REG_SF4_TEMP(i, tmp));
+                       data->sf4_reg[i][SF4_PWM][tmp] =
+                               w83795_read(client, W83795_REG_SF4_PWM(i, tmp));
+               }
+       }
+
+       /* Setup PWM Register */
+       for (i = 0; i < 3; i++) {
+               data->setup_pwm[i] =
+                       w83795_read(client, W83795_REG_SETUP_PWM(i));
+       }
+
+       /* alarm and beep */
+       for (i = 0; i < ALARM_BEEP_REG_NUM; i++) {
+               data->alarms[i] = w83795_read(client, W83795_REG_ALARM(i));
+               data->beeps[i] = w83795_read(client, W83795_REG_BEEP(i));
+       }
+       data->beep_enable =
+               (w83795_read(client, W83795_REG_BEEP(5)) >> 7) & 0x01;
+
+       /* Register sysfs hooks */
+       for (i = 0; i < ARRAY_SIZE(w83795_in); i++) {
+               if (!(data->has_in & (1 << (i / 6))))
+                       continue;
+               err = device_create_file(dev, &w83795_in[i].dev_attr);
+               if (err)
+                       goto exit_remove;
+       }
+
+       for (i = 0; i < ARRAY_SIZE(w83795_fan); i++) {
+               if (!(data->has_fan & (1 << (i / 5))))
+                       continue;
+               err = device_create_file(dev, &w83795_fan[i].dev_attr);
+               if (err)
+                       goto exit_remove;
+       }
+
+       for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {
+               err = device_create_file(dev, &sda_single_files[i].dev_attr);
+               if (err)
+                       goto exit_remove;
+       }
+
+       for (i = 0; i < ARRAY_SIZE(w83795_temp); i++) {
+               if (!(data->has_temp & (1 << (i / 29))))
+                       continue;
+               err = device_create_file(dev, &w83795_temp[i].dev_attr);
+               if (err)
+                       goto exit_remove;
+       }
+
+       if (data->enable_dts != 0) {
+               for (i = 0; i < ARRAY_SIZE(w83795_dts); i++) {
+                       if (!(data->has_dts & (1 << (i / 8))))
+                               continue;
+                       err = device_create_file(dev, &w83795_dts[i].dev_attr);
+                       if (err)
+                               goto exit_remove;
+               }
+       }
+
+       if (data->chip_type == w83795g) {
+               for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++) {
+                       err = device_create_file(dev,
+                                                &w83795_left_reg[i].dev_attr);
+                       if (err)
+                               goto exit_remove;
+               }
+       }
+
+       for (i = 0; i < ARRAY_SIZE(w83795_static); i++) {
+               err = device_create_file(dev, &w83795_static[i].dev_attr);
+               if (err)
+                       goto exit_remove;
+       }
+
+       data->hwmon_dev = hwmon_device_register(dev);
+       if (IS_ERR(data->hwmon_dev)) {
+               err = PTR_ERR(data->hwmon_dev);
+               goto exit_remove;
+       }
+
+       return 0;
+
+       /* Unregister sysfs hooks */
+exit_remove:
+       for (i = 0; i < ARRAY_SIZE(w83795_in); i++)
+               device_remove_file(dev, &w83795_in[i].dev_attr);
+
+       for (i = 0; i < ARRAY_SIZE(w83795_fan); i++)
+               device_remove_file(dev, &w83795_fan[i].dev_attr);
+
+       for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
+               device_remove_file(dev, &sda_single_files[i].dev_attr);
+
+       if (data->chip_type == w83795g) {
+               for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++)
+                       device_remove_file(dev, &w83795_left_reg[i].dev_attr);
+       }
+
+       for (i = 0; i < ARRAY_SIZE(w83795_temp); i++)
+               device_remove_file(dev, &w83795_temp[i].dev_attr);
+
+       for (i = 0; i < ARRAY_SIZE(w83795_dts); i++)
+               device_remove_file(dev, &w83795_dts[i].dev_attr);
+
+       for (i = 0; i < ARRAY_SIZE(w83795_static); i++)
+               device_remove_file(dev, &w83795_static[i].dev_attr);
+
+       kfree(data);
+exit:
+       return err;
+}
+
+static int w83795_remove(struct i2c_client *client)
+{
+       struct w83795_data *data = i2c_get_clientdata(client);
+       struct device *dev = &client->dev;
+       int i;
+
+       hwmon_device_unregister(data->hwmon_dev);
+
+       for (i = 0; i < ARRAY_SIZE(w83795_in); i++)
+               device_remove_file(dev, &w83795_in[i].dev_attr);
+
+       for (i = 0; i < ARRAY_SIZE(w83795_fan); i++)
+               device_remove_file(dev, &w83795_fan[i].dev_attr);
+
+       for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)
+               device_remove_file(dev, &sda_single_files[i].dev_attr);
+
+       if (data->chip_type == w83795g) {
+               for (i = 0; i < ARRAY_SIZE(w83795_left_reg); i++)
+                       device_remove_file(dev, &w83795_left_reg[i].dev_attr);
+       }
+
+       for (i = 0; i < ARRAY_SIZE(w83795_temp); i++)
+               device_remove_file(dev, &w83795_temp[i].dev_attr);
+
+       for (i = 0; i < ARRAY_SIZE(w83795_dts); i++)
+               device_remove_file(dev, &w83795_dts[i].dev_attr);
+
+       for (i = 0; i < ARRAY_SIZE(w83795_static); i++)
+               device_remove_file(dev, &w83795_static[i].dev_attr);
+
+       kfree(data);
+
+       return 0;
+}
+
+
+static const struct i2c_device_id w83795_id[] = {
+       { "w83795", w83795 },
+       { }
+};
+MODULE_DEVICE_TABLE(i2c, w83795_id);
+
+static struct i2c_driver w83795_driver = {
+       .driver = {
+                  .name = "w83795",
+       },
+       .probe          = w83795_probe,
+       .remove         = w83795_remove,
+       .id_table       = w83795_id,
+
+       .class          = I2C_CLASS_HWMON,
+       .detect         = w83795_detect,
+       .address_list   = normal_i2c,
+};
+
+static int __init sensors_w83795_init(void)
+{
+       return i2c_add_driver(&w83795_driver);
+}
+
+static void __exit sensors_w83795_exit(void)
+{
+       i2c_del_driver(&w83795_driver);
+}
+
+MODULE_AUTHOR("Wei Song");
+MODULE_DESCRIPTION("w83795 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_w83795_init);
+module_exit(sensors_w83795_exit);