]> git.sur5r.net Git - groeck-it87/commitdiff
Various enhancements, cleanup, and fixes
authorGuenter Roeck <linux@roeck-us.net>
Sun, 5 Apr 2015 13:23:26 +0000 (06:23 -0700)
committerGuenter Roeck <linux@roeck-us.net>
Sun, 5 Apr 2015 13:23:26 +0000 (06:23 -0700)
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
it87.c

diff --git a/it87.c b/it87.c
index 4ab53b9ac938505f58b70c9c3189a35d546218c6..1ee1034a017af046f77692bb525fe2dda56a9769 100644 (file)
--- a/it87.c
+++ b/it87.c
  *  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.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/bitops.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/slab.h>
@@ -106,6 +103,7 @@ static inline void superio_outb(int ioreg, int reg, int val)
 static int superio_inw(int ioreg, int reg)
 {
        int val;
+
        outb(reg++, ioreg);
        val = inb(ioreg + 1) << 8;
        outb(reg, ioreg);
@@ -156,10 +154,10 @@ static inline void superio_exit(int ioreg)
 #define IT8782F_DEVID 0x8782
 #define IT8783E_DEVID 0x8783
 #define IT8786E_DEVID 0x8786
+#define IT8790E_DEVID 0x8790
 #define IT8603E_DEVID 0x8603
 #define IT8620E_DEVID 0x8620
 #define IT8623E_DEVID 0x8623
-#define IT8790E_DEVID 0x8790
 #define IT87_ACT_REG  0x30
 #define IT87_BASE_REG 0x60
 
@@ -217,23 +215,28 @@ static bool fix_pwm_polarity;
 #define IT87_REG_FAN_DIV       0x0b
 #define IT87_REG_FAN_16BIT     0x0c
 
-/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
+/*
+ * Monitors:
+ * - up to 13 voltage (0 to 7, battery, avcc, 10 to 12)
+ * - up to 6 temp (1 to 6)
+ * - up to 6 fan (1 to 6)
+ */
 
-static const u8 IT87_REG_FAN[]         = {0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x4c};
-static const u8 IT87_REG_FAN_MIN[]     = {0x10, 0x11, 0x12, 0x84, 0x86, 0x4e};
-static const u8 IT87_REG_FANX[]                = {0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d};
-static const u8 IT87_REG_FANX_MIN[]    = {0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f};
-static const u8 IT87_REG_TEMP_OFFSET[] = {0x56, 0x57, 0x59};
+static const u8 IT87_REG_FAN[]         = { 0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x4c };
+static const u8 IT87_REG_FAN_MIN[]     = { 0x10, 0x11, 0x12, 0x84, 0x86, 0x4e };
+static const u8 IT87_REG_FANX[]        = { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d };
+static const u8 IT87_REG_FANX_MIN[]    = { 0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f };
+static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 };
 
 #define IT87_REG_FAN_MAIN_CTRL 0x13
 #define IT87_REG_FAN_CTL       0x14
-static const u8 IT87_REG_PWM[]         = {0x15, 0x16, 0x17, 0x7f, 0xa7, 0xaf};
-static const u8 IT87_REG_PWM_DUTY[]    = {0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab};
+static const u8 IT87_REG_PWM[]         = { 0x15, 0x16, 0x17, 0x7f, 0xa7, 0xaf };
+static const u8 IT87_REG_PWM_DUTY[]    = { 0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab };
 
-#define IT87_REG_VIN(nr)       (0x20 + (nr))
-#define IT87_REG_TEMP(nr)      (0x29 + (nr))
+static const u8 IT87_REG_VIN[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
+                                   0x27, 0x28, 0x2f, 0x2c, 0x2d, 0x2e };
 
-#define IT87_REG_AVCC3         0x2f
+#define IT87_REG_TEMP(nr)      (0x29 + (nr))
 
 #define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
 #define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
@@ -250,84 +253,98 @@ static const u8 IT87_REG_PWM_DUTY[]       = {0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab};
 #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
 #define IT87_REG_AUTO_PWM(nr, i)  (0x65 + (nr) * 8 + (i))
 
+#define IT87_REG_TEMP456_ENABLE        0x77
+
+#define NUM_VIN                        ARRAY_SIZE(IT87_REG_VIN)
+#define NUM_VIN_LIMIT          8
+#define NUM_TEMP               6
+#define NUM_TEMP_OFFSET                ARRAY_SIZE(IT87_REG_TEMP_OFFSET)
+#define NUM_TEMP_LIMIT         3
+#define NUM_FAN                        ARRAY_SIZE(IT87_REG_FAN)
+#define NUM_FAN_DIV            3
+#define NUM_PWM                        ARRAY_SIZE(IT87_REG_PWM)
+#define NUM_AUTO_PWM           ARRAY_SIZE(IT87_REG_PWM)
+
 struct it87_devices {
        const char *name;
+       const char * const suffix;
        u16 features;
        u8 peci_mask;
        u8 old_peci_mask;
-       const char * const suffix;
 };
 
-#define FEAT_12MV_ADC          (1 << 0)
-#define FEAT_NEWER_AUTOPWM     (1 << 1)
-#define FEAT_OLD_AUTOPWM       (1 << 2)
-#define FEAT_16BIT_FANS                (1 << 3)
-#define FEAT_TEMP_OFFSET       (1 << 4)
-#define FEAT_TEMP_PECI         (1 << 5)
-#define FEAT_TEMP_OLD_PECI     (1 << 6)
-#define FEAT_FAN16_CONFIG      (1 << 7)        /* Need to enable 16-bit fans */
-#define FEAT_FIVE_FANS         (1 << 8)        /* Supports five fans */
-#define FEAT_VID               (1 << 9)        /* Set if chip supports VID */
-#define FEAT_IN7_INTERNAL      (1 << 10)       /* Set if in7 is internal */
-#define FEAT_SIX_FANS          (1 << 11)       /* Supports six fans */
-#define FEAT_AVCC3             (1 << 12)       /* Chip supports in9/AVCC3 */
-#define FEAT_SIX_PWM           (1 << 13)       /* Chip supports 6 pwm chn */
-#define FEAT_PWM_FREQ2         (1 << 14)       /* Separate pwm freq 2 */
+#define FEAT_12MV_ADC          BIT(0)
+#define FEAT_NEWER_AUTOPWM     BIT(1)
+#define FEAT_OLD_AUTOPWM       BIT(2)
+#define FEAT_16BIT_FANS                BIT(3)
+#define FEAT_TEMP_OFFSET       BIT(4)
+#define FEAT_TEMP_PECI         BIT(5)
+#define FEAT_TEMP_OLD_PECI     BIT(6)
+#define FEAT_FAN16_CONFIG      BIT(7)  /* Need to enable 16-bit fans */
+#define FEAT_FIVE_FANS         BIT(8)  /* Supports five fans */
+#define FEAT_VID               BIT(9)  /* Set if chip supports VID */
+#define FEAT_IN7_INTERNAL      BIT(10) /* Set if in7 is internal */
+#define FEAT_SIX_FANS          BIT(11) /* Supports six fans */
+#define FEAT_AVCC3             BIT(12) /* Chip supports in9/AVCC3 */
+#define FEAT_SIX_PWM           BIT(13) /* Chip supports 6 pwm chn */
+#define FEAT_PWM_FREQ2         BIT(14) /* Separate pwm freq 2 */
+#define FEAT_SIX_TEMP          BIT(15) /* Up to 6 temp sensors */
 
 static const struct it87_devices it87_devices[] = {
        [it87] = {
                .name = "it87",
-               .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
                .suffix = "F",
+               .features = FEAT_OLD_AUTOPWM,   /* may need to overwrite */
        },
        [it8712] = {
                .name = "it8712",
+               .suffix = "F",
                .features = FEAT_OLD_AUTOPWM | FEAT_VID,
                                                /* may need to overwrite */
-               .suffix = "F",
        },
        [it8716] = {
                .name = "it8716",
+               .suffix = "F",
                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
                  | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_PWM_FREQ2,
-               .suffix = "F",
        },
        [it8718] = {
                .name = "it8718",
+               .suffix = "F",
                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
                  | FEAT_PWM_FREQ2,
                .old_peci_mask = 0x4,
-               .suffix = "F",
        },
        [it8720] = {
                .name = "it8720",
+               .suffix = "F",
                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
                  | FEAT_PWM_FREQ2,
                .old_peci_mask = 0x4,
-               .suffix = "F",
        },
        [it8721] = {
                .name = "it8721",
+               .suffix = "F",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
                  | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_IN7_INTERNAL
                  | FEAT_PWM_FREQ2,
                .peci_mask = 0x05,
                .old_peci_mask = 0x02,  /* Actually reports PCH */
-               .suffix = "F",
        },
        [it8728] = {
                .name = "it8728",
+               .suffix = "F",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
                  | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2,
                .peci_mask = 0x07,
-               .suffix = "F",
        },
        [it8771] = {
                .name = "it8771",
+               .suffix = "E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
                  | FEAT_PWM_FREQ2,
@@ -336,10 +353,10 @@ static const struct it87_devices it87_devices[] = {
                                /* 16 bit fans (OHM) */
                                /* three fans, always 16 bit (guesswork) */
                .peci_mask = 0x07,
-               .suffix = "E",
        },
        [it8772] = {
                .name = "it8772",
+               .suffix = "E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
                  | FEAT_PWM_FREQ2,
@@ -348,61 +365,60 @@ static const struct it87_devices it87_devices[] = {
                                /* 16 bit fans (HWSensors4, OHM) */
                                /* three fans, always 16 bit (datasheet) */
                .peci_mask = 0x07,
-               .suffix = "E",
        },
        [it8781] = {
                .name = "it8781",
+               .suffix = "F",
                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
                .old_peci_mask = 0x4,
-               .suffix = "F",
        },
        [it8782] = {
                .name = "it8782",
+               .suffix = "F",
                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
                .old_peci_mask = 0x4,
-               .suffix = "F",
        },
        [it8783] = {
                .name = "it8783",
+               .suffix = "E/F",
                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2,
                .old_peci_mask = 0x4,
-               .suffix = "E/F",
        },
        [it8786] = {
                .name = "it8786",
+               .suffix = "E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
                  | FEAT_PWM_FREQ2,
                .peci_mask = 0x07,
-               .suffix = "E",
        },
        [it8790] = {
                .name = "it8790",
+               .suffix = "E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
                  | FEAT_PWM_FREQ2,
                .peci_mask = 0x07,
-               .suffix = "E",
        },
        [it8603] = {
                .name = "it8603",
+               .suffix = "E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
                  | FEAT_AVCC3 | FEAT_PWM_FREQ2,
                .peci_mask = 0x07,
-               .suffix = "E",
        },
        [it8620] = {
                .name = "it8620",
+               .suffix = "E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
                  | FEAT_IN7_INTERNAL | FEAT_AVCC3 | FEAT_SIX_PWM
-                 | FEAT_PWM_FREQ2,
+                 | FEAT_PWM_FREQ2 | FEAT_SIX_TEMP,
                .peci_mask = 0x07,
-               .suffix = "E",
        },
 };
 
@@ -412,10 +428,10 @@ static const struct it87_devices it87_devices[] = {
 #define has_old_autopwm(data)  ((data)->features & FEAT_OLD_AUTOPWM)
 #define has_temp_offset(data)  ((data)->features & FEAT_TEMP_OFFSET)
 #define has_temp_peci(data, nr)        (((data)->features & FEAT_TEMP_PECI) && \
-                                ((data)->peci_mask & (1 << nr)))
+                                ((data)->peci_mask & BIT(nr)))
 #define has_temp_old_peci(data, nr) \
                                (((data)->features & FEAT_TEMP_OLD_PECI) && \
-                                ((data)->old_peci_mask & (1 << nr)))
+                                ((data)->old_peci_mask & BIT(nr)))
 #define has_fan16_config(data) ((data)->features & FEAT_FAN16_CONFIG)
 #define has_five_fans(data)    ((data)->features & (FEAT_FIVE_FANS | \
                                                     FEAT_SIX_FANS))
@@ -425,6 +441,7 @@ static const struct it87_devices it87_devices[] = {
 #define has_avcc3(data)                ((data)->features & FEAT_AVCC3)
 #define has_six_pwm(data)      ((data)->features & FEAT_SIX_PWM)
 #define has_pwm_freq2(data)    ((data)->features & FEAT_PWM_FREQ2)
+#define has_six_temp(data)     ((data)->features & FEAT_SIX_TEMP)
 
 struct it87_sio_data {
        enum chips type;
@@ -446,7 +463,7 @@ struct it87_sio_data {
  * The structure is dynamically allocated.
  */
 struct it87_data {
-       struct device *hwmon_dev;
+       const struct attribute_group *groups[7];
        enum chips type;
        u16 features;
        u8 peci_mask;
@@ -459,17 +476,21 @@ struct it87_data {
        unsigned long last_updated;     /* In jiffies */
 
        u16 in_scaled;          /* Internal voltage sensors are scaled */
-       u8 in[10][3];           /* [nr][0]=in, [1]=min, [2]=max */
+       u16 in_internal;        /* Bitfield, internal sensors (for labels) */
+       u16 has_in;             /* Bitfield, voltage sensors enabled */
+       u8 in[NUM_VIN][3];              /* [nr][0]=in, [1]=min, [2]=max */
        u8 has_fan;             /* Bitfield, fans enabled */
-       u16 fan[6][2];          /* Register values, [nr][0]=fan, [1]=min */
+       u16 fan[NUM_FAN][2];    /* Register values, [nr][0]=fan, [1]=min */
        u8 has_temp;            /* Bitfield, temp sensors enabled */
-       s8 temp[3][4];          /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
+       s8 temp[NUM_TEMP][4];   /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
        u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
        u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
-       u8 fan_div[3];          /* Register encoding, shifted right */
+       u8 fan_div[NUM_FAN_DIV];/* Register encoding, shifted right */
+       bool has_vid;           /* True if VID supported */
        u8 vid;                 /* Register encoding, combined */
        u8 vrm;
        u32 alarms;             /* Register encoding, combined */
+       bool has_beep;          /* true if beep supported */
        u8 beeps;               /* Register encoding */
        u8 fan_main_ctrl;       /* Register value */
        u8 fan_ctl;             /* Register value */
@@ -484,19 +505,21 @@ struct it87_data {
         * is no longer needed, but it is still done to keep the driver
         * simple.
         */
-       u8 pwm_ctrl[6];         /* Register value */
-       u8 pwm_duty[6];         /* Manual PWM value set by user */
-       u8 pwm_temp_map[6];     /* PWM to temp. chan. mapping (bits 1-0) */
+       u8 has_pwm;             /* Bitfield, pwm control enabled */
+       u8 pwm_ctrl[NUM_PWM];   /* Register value */
+       u8 pwm_duty[NUM_PWM];   /* Manual PWM value set by user */
+       u8 pwm_temp_map[NUM_PWM];/* PWM to temp. chan. mapping (bits 1-0) */
 
        /* Automatic fan speed control registers */
-       u8 auto_pwm[3][4];      /* [nr][3] is hard-coded */
-       s8 auto_temp[3][5];     /* [nr][0] is point1_temp_hyst */
+       u8 auto_pwm[NUM_AUTO_PWM][4];   /* [nr][3] is hard-coded */
+       s8 auto_temp[NUM_AUTO_PWM][5];  /* [nr][0] is point1_temp_hyst */
 };
 
 static int adc_lsb(const struct it87_data *data, int nr)
 {
        int lsb = has_12mv_adc(data) ? 12 : 16;
-       if (data->in_scaled & (1 << nr))
+
+       if (data->in_scaled & BIT(nr))
                lsb <<= 1;
        return lsb;
 }
@@ -553,23 +576,24 @@ static int pwm_from_reg(const struct it87_data *data, u8 reg)
                return (reg & 0x7f) << 1;
 }
 
-
 static int DIV_TO_REG(int val)
 {
        int answer = 0;
+
        while (answer < 7 && (val >>= 1))
                answer++;
        return answer;
 }
-#define DIV_FROM_REG(val) (1 << (val))
+
+#define DIV_FROM_REG(val) BIT(val)
 
 /*
- * pwm base frequencies. The frequency has to be divided by either 128 or 256,
- * depending on the chip type, to calculate the actual pwm frequency.
+ * PWM base frequencies. The frequency has to be divided by either 128 or 256,
+ * depending on the chip type, to calculate the actual PWM frequency.
  *
- * Some of the chip datasheets suggest a base frequency of 51kHz instead
- * of 750kHz for the slowest base frequency, resulting in a pwm frequency
- * of 200Hz. Sometimes both pwm frequency select registers are affected,
+ * Some of the chip datasheets suggest a base frequency of 51 kHz instead
+ * of 750 kHz for the slowest base frequency, resulting in a PWM frequency
+ * of 200 Hz. Sometimes both PWM frequency select registers are affected,
  * sometimes just one. It is unknown if this is a datasheet error or real,
  * so this is ignored for now.
  */
@@ -610,7 +634,8 @@ static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
 {
        data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM[nr]);
        if (has_newer_autopwm(data)) {
-               data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
+               data->pwm_temp_map[nr] = (data->pwm_ctrl[nr] & 0x03) +
+                       nr < 3 ? 0 : 3;
                data->pwm_duty[nr] = it87_read_value(data,
                                                     IT87_REG_PWM_DUTY[nr]);
        } else {
@@ -639,8 +664,8 @@ static struct it87_data *it87_update_device(struct device *dev)
 
        mutex_lock(&data->update_lock);
 
-       if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
-           || !data->valid) {
+       if (time_after(jiffies, data->last_updated + HZ + HZ / 2) ||
+           !data->valid) {
                if (update_vbat) {
                        /*
                         * Cleared after each update, so reenable.  Value
@@ -649,22 +674,26 @@ static struct it87_data *it87_update_device(struct device *dev)
                        it87_write_value(data, IT87_REG_CONFIG,
                                it87_read_value(data, IT87_REG_CONFIG) | 0x40);
                }
-               for (i = 0; i <= 7; i++) {
+               for (i = 0; i < NUM_VIN; i++) {
+                       if (!(data->has_in & BIT(i)))
+                               continue;
+
                        data->in[i][0] =
-                               it87_read_value(data, IT87_REG_VIN(i));
+                               it87_read_value(data, IT87_REG_VIN[i]);
+
+                       /* VBAT and AVCC don't have limit registers */
+                       if (i >= 8)
+                               continue;
+
                        data->in[i][1] =
                                it87_read_value(data, IT87_REG_VIN_MIN(i));
                        data->in[i][2] =
                                it87_read_value(data, IT87_REG_VIN_MAX(i));
                }
-               /* in8 (battery) has no limit registers */
-               data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8));
-               if (has_avcc3(data))
-                       data->in[9][0] = it87_read_value(data, IT87_REG_AVCC3);
 
-               for (i = 0; i < 6; i++) {
+               for (i = 0; i < NUM_FAN; i++) {
                        /* Skip disabled fans */
-                       if (!(data->has_fan & (1 << i)))
+                       if (!(data->has_fan & BIT(i)))
                                continue;
 
                        data->fan[i][1] =
@@ -679,19 +708,24 @@ static struct it87_data *it87_update_device(struct device *dev)
                                                IT87_REG_FANX_MIN[i]) << 8;
                        }
                }
-               for (i = 0; i < 3; i++) {
-                       if (!(data->has_temp & (1 << i)))
+               for (i = 0; i < NUM_TEMP; i++) {
+                       if (!(data->has_temp & BIT(i)))
                                continue;
                        data->temp[i][0] =
                                it87_read_value(data, IT87_REG_TEMP(i));
+
+                       if (has_temp_offset(data) && i < NUM_TEMP_OFFSET)
+                               data->temp[i][3] =
+                                 it87_read_value(data,
+                                                 IT87_REG_TEMP_OFFSET[i]);
+
+                       if (i >= NUM_TEMP_LIMIT)
+                               continue;
+
                        data->temp[i][1] =
                                it87_read_value(data, IT87_REG_TEMP_LOW(i));
                        data->temp[i][2] =
                                it87_read_value(data, IT87_REG_TEMP_HIGH(i));
-                       if (has_temp_offset(data))
-                               data->temp[i][3] =
-                                 it87_read_value(data,
-                                                 IT87_REG_TEMP_OFFSET[i]);
                }
 
                /* Newer chips don't have clock dividers */
@@ -711,7 +745,7 @@ static struct it87_data *it87_update_device(struct device *dev)
                data->fan_main_ctrl = it87_read_value(data,
                                IT87_REG_FAN_MAIN_CTRL);
                data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
-               for (i = 0; i < 3; i++)
+               for (i = 0; i < NUM_PWM; i++)
                        it87_update_pwm_ctrl(data, i);
 
                data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
@@ -742,10 +776,10 @@ static ssize_t show_in(struct device *dev, struct device_attribute *attr,
                       char *buf)
 {
        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
-       int nr = sattr->nr;
+       struct it87_data *data = it87_update_device(dev);
        int index = sattr->index;
+       int nr = sattr->nr;
 
-       struct it87_data *data = it87_update_device(dev);
        return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 }
 
@@ -753,10 +787,9 @@ static ssize_t set_in(struct device *dev, struct device_attribute *attr,
                      const char *buf, size_t count)
 {
        struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
-       int nr = sattr->nr;
-       int index = sattr->index;
-
        struct it87_data *data = dev_get_drvdata(dev);
+       int index = sattr->index;
+       int nr = sattr->nr;
        unsigned long val;
 
        if (kstrtoul(buf, 10, &val) < 0)
@@ -822,8 +855,11 @@ static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
 
 static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0);
 static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0);
+static SENSOR_DEVICE_ATTR_2(in10_input, S_IRUGO, show_in, NULL, 10, 0);
+static SENSOR_DEVICE_ATTR_2(in11_input, S_IRUGO, show_in, NULL, 11, 0);
+static SENSOR_DEVICE_ATTR_2(in12_input, S_IRUGO, show_in, NULL, 12, 0);
 
-/* 3 temperatures */
+/* Up to 6 temperatures */
 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
                         char *buf)
 {
@@ -896,6 +932,9 @@ static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
                            2, 2);
 static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp,
                            set_temp, 2, 3);
+static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, 0);
+static SENSOR_DEVICE_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, 0);
+static SENSOR_DEVICE_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, 0);
 
 static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
                              char *buf)
@@ -906,8 +945,8 @@ static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
        u8 reg = data->sensor;      /* In case value is updated while used */
        u8 extra = data->extra;
 
-       if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1))
-           || (has_temp_old_peci(data, nr) && (extra & 0x80)))
+       if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) ||
+           (has_temp_old_peci(data, nr) && (extra & 0x80)))
                return sprintf(buf, "6\n");  /* Intel PECI */
        if (reg & (1 << nr))
                return sprintf(buf, "3\n");  /* thermal diode */
@@ -976,7 +1015,7 @@ static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
 
 static int pwm_mode(const struct it87_data *data, int nr)
 {
-       int ctrl = data->fan_main_ctrl & (1 << nr);
+       int ctrl = data->fan_main_ctrl & BIT(nr);
 
        if (ctrl == 0 && data->type != it8603)          /* Full speed */
                return 0;
@@ -1003,35 +1042,38 @@ static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
 }
 
 static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
-               char *buf)
+                           char *buf)
 {
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+       struct it87_data *data = it87_update_device(dev);
        int nr = sensor_attr->index;
 
-       struct it87_data *data = it87_update_device(dev);
-       return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
+       return sprintf(buf, "%lu\n", DIV_FROM_REG(data->fan_div[nr]));
 }
+
 static ssize_t show_pwm_enable(struct device *dev,
-               struct device_attribute *attr, char *buf)
+                              struct device_attribute *attr, char *buf)
 {
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+       struct it87_data *data = it87_update_device(dev);
        int nr = sensor_attr->index;
 
-       struct it87_data *data = it87_update_device(dev);
        return sprintf(buf, "%d\n", pwm_mode(data, nr));
 }
+
 static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
-               char *buf)
+                       char *buf)
 {
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+       struct it87_data *data = it87_update_device(dev);
        int nr = sensor_attr->index;
 
-       struct it87_data *data = it87_update_device(dev);
        return sprintf(buf, "%d\n",
                       pwm_from_reg(data, data->pwm_duty[nr]));
 }
+
 static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
-               char *buf)
+                            char *buf)
 {
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
        struct it87_data *data = it87_update_device(dev);
@@ -1044,7 +1086,7 @@ static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
        else
                index = (data->fan_ctl >> 4) & 0x07;
 
-       freq = pwm_freq[index] / has_newer_autopwm(data) ? 256 : 128;
+       freq = pwm_freq[index] / (has_newer_autopwm(data) ? 256 : 128);
 
        return sprintf(buf, "%u\n", freq);
 }
@@ -1095,12 +1137,11 @@ static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 }
 
 static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
-               const char *buf, size_t count)
+                          const char *buf, size_t count)
 {
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
-       int nr = sensor_attr->index;
-
        struct it87_data *data = dev_get_drvdata(dev);
+       int nr = sensor_attr->index;
        unsigned long val;
        int min;
        u8 old;
@@ -1165,13 +1206,12 @@ static int check_trip_points(struct device *dev, int nr)
        return err;
 }
 
-static ssize_t set_pwm_enable(struct device *dev,
-               struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t set_pwm_enable(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 it87_data *data = dev_get_drvdata(dev);
+       int nr = sensor_attr->index;
        long val;
 
        if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
@@ -1193,9 +1233,9 @@ static ssize_t set_pwm_enable(struct device *dev,
                int tmp;
                /* make sure the fan is on when in on/off mode */
                tmp = it87_read_value(data, IT87_REG_FAN_CTL);
-               it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr));
+               it87_write_value(data, IT87_REG_FAN_CTL, tmp | BIT(nr));
                /* set on/off mode */
-               data->fan_main_ctrl &= ~(1 << nr);
+               data->fan_main_ctrl &= ~BIT(nr);
                it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
                                 data->fan_main_ctrl);
        } else {
@@ -1209,7 +1249,7 @@ static ssize_t set_pwm_enable(struct device *dev,
 
                if (data->type != it8603) {
                        /* set SmartGuardian mode */
-                       data->fan_main_ctrl |= (1 << nr);
+                       data->fan_main_ctrl |= BIT(nr);
                        it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
                                         data->fan_main_ctrl);
                }
@@ -1218,13 +1258,13 @@ static ssize_t set_pwm_enable(struct device *dev,
        mutex_unlock(&data->update_lock);
        return count;
 }
+
 static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
-               const char *buf, size_t count)
+                      const char *buf, size_t count)
 {
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
-       int nr = sensor_attr->index;
-
        struct it87_data *data = dev_get_drvdata(dev);
+       int nr = sensor_attr->index;
        long val;
 
        if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
@@ -1258,8 +1298,9 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
        mutex_unlock(&data->update_lock);
        return count;
 }
-static ssize_t set_pwm_freq(struct device *dev,
-               struct device_attribute *attr, const char *buf, size_t count)
+
+static ssize_t set_pwm_freq(struct device *dev, struct device_attribute *attr,
+                           const char *buf, size_t count)
 {
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
        struct it87_data *data = dev_get_drvdata(dev);
@@ -1275,7 +1316,7 @@ static ssize_t set_pwm_freq(struct device *dev,
 
        /* Search for the nearest available frequency */
        for (i = 0; i < 7; i++) {
-               if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2)
+               if (val > (pwm_freq[i] + pwm_freq[i + 1]) / 2)
                        break;
        }
 
@@ -1293,51 +1334,43 @@ static ssize_t set_pwm_freq(struct device *dev,
 
        return count;
 }
+
 static ssize_t show_pwm_temp_map(struct device *dev,
-               struct device_attribute *attr, char *buf)
+                                struct device_attribute *attr, char *buf)
 {
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
-       int nr = sensor_attr->index;
-
        struct it87_data *data = it87_update_device(dev);
+       int nr = sensor_attr->index;
        int map;
 
        if (data->pwm_temp_map[nr] < 3)
-               map = 1 << data->pwm_temp_map[nr];
+               map = BIT(data->pwm_temp_map[nr]);
        else
                map = 0;                        /* Should never happen */
        return sprintf(buf, "%d\n", map);
 }
+
 static ssize_t set_pwm_temp_map(struct device *dev,
-               struct device_attribute *attr, const char *buf, size_t count)
+                               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 it87_data *data = dev_get_drvdata(dev);
+       int nr = sensor_attr->index;
        long val;
        u8 reg;
 
-       /*
-        * This check can go away if we ever support automatic fan speed
-        * control on newer chips.
-        */
-       if (!has_old_autopwm(data)) {
-               dev_notice(dev, "Mapping change disabled for safety reasons\n");
-               return -EINVAL;
-       }
-
        if (kstrtol(buf, 10, &val) < 0)
                return -EINVAL;
 
        switch (val) {
-       case (1 << 0):
+       case BIT(0):
                reg = 0x00;
                break;
-       case (1 << 1):
+       case BIT(1):
                reg = 0x01;
                break;
-       case (1 << 2):
+       case BIT(2):
                reg = 0x02;
                break;
        default:
@@ -1358,8 +1391,8 @@ static ssize_t set_pwm_temp_map(struct device *dev,
        return count;
 }
 
-static ssize_t show_auto_pwm(struct device *dev,
-               struct device_attribute *attr, char *buf)
+static ssize_t show_auto_pwm(struct device *dev, struct device_attribute *attr,
+                            char *buf)
 {
        struct it87_data *data = it87_update_device(dev);
        struct sensor_device_attribute_2 *sensor_attr =
@@ -1371,8 +1404,8 @@ static ssize_t show_auto_pwm(struct device *dev,
                       pwm_from_reg(data, data->auto_pwm[nr][point]));
 }
 
-static ssize_t set_auto_pwm(struct device *dev,
-               struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t set_auto_pwm(struct device *dev, struct device_attribute *attr,
+                           const char *buf, size_t count)
 {
        struct it87_data *data = dev_get_drvdata(dev);
        struct sensor_device_attribute_2 *sensor_attr =
@@ -1392,8 +1425,8 @@ static ssize_t set_auto_pwm(struct device *dev,
        return count;
 }
 
-static ssize_t show_auto_temp(struct device *dev,
-               struct device_attribute *attr, char *buf)
+static ssize_t show_auto_temp(struct device *dev, struct device_attribute *attr,
+                             char *buf)
 {
        struct it87_data *data = it87_update_device(dev);
        struct sensor_device_attribute_2 *sensor_attr =
@@ -1404,8 +1437,8 @@ static ssize_t show_auto_temp(struct device *dev,
        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
 }
 
-static ssize_t set_auto_temp(struct device *dev,
-               struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t set_auto_temp(struct device *dev, struct device_attribute *attr,
+                            const char *buf, size_t count)
 {
        struct it87_data *data = dev_get_drvdata(dev);
        struct sensor_device_attribute_2 *sensor_attr =
@@ -1460,7 +1493,7 @@ static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
 static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq,
                          set_pwm_freq, 0);
-static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO,
                          show_pwm_temp_map, set_pwm_temp_map, 0);
 static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
                            show_auto_pwm, set_auto_pwm, 0, 0);
@@ -1485,7 +1518,7 @@ static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
                          show_pwm_enable, set_pwm_enable, 1);
 static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
 static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, set_pwm_freq, 1);
-static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO,
                          show_pwm_temp_map, set_pwm_temp_map, 1);
 static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
                            show_auto_pwm, set_auto_pwm, 1, 0);
@@ -1510,7 +1543,7 @@ static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
                          show_pwm_enable, set_pwm_enable, 2);
 static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
 static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL, 2);
-static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO,
                          show_pwm_temp_map, set_pwm_temp_map, 2);
 static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
                            show_auto_pwm, set_auto_pwm, 2, 0);
@@ -1535,46 +1568,49 @@ static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
                          show_pwm_enable, set_pwm_enable, 3);
 static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 3);
 static SENSOR_DEVICE_ATTR(pwm4_freq, S_IRUGO, show_pwm_freq, NULL, 3);
-static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO,
                          show_pwm_temp_map, set_pwm_temp_map, 3);
 
 static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
                          show_pwm_enable, set_pwm_enable, 4);
 static SENSOR_DEVICE_ATTR(pwm5, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 4);
 static SENSOR_DEVICE_ATTR(pwm5_freq, S_IRUGO, show_pwm_freq, NULL, 4);
-static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO,
                          show_pwm_temp_map, set_pwm_temp_map, 4);
 
 static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
                          show_pwm_enable, set_pwm_enable, 5);
 static SENSOR_DEVICE_ATTR(pwm6, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 5);
 static SENSOR_DEVICE_ATTR(pwm6_freq, S_IRUGO, show_pwm_freq, NULL, 5);
-static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO,
                          show_pwm_temp_map, set_pwm_temp_map, 5);
 
 /* Alarms */
 static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
-               char *buf)
+                          char *buf)
 {
        struct it87_data *data = it87_update_device(dev);
+
        return sprintf(buf, "%u\n", data->alarms);
 }
 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
 
 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
-               char *buf)
+                         char *buf)
 {
-       int bitnr = to_sensor_dev_attr(attr)->index;
        struct it87_data *data = it87_update_device(dev);
+       int bitnr = to_sensor_dev_attr(attr)->index;
+
        return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
 }
 
-static ssize_t clear_intrusion(struct device *dev, struct device_attribute
-               *attr, const char *buf, size_t count)
+static ssize_t clear_intrusion(struct device *dev,
+                              struct device_attribute *attr, const char *buf,
+                              size_t count)
 {
        struct it87_data *data = dev_get_drvdata(dev);
-       long val;
        int config;
+       long val;
 
        if (kstrtol(buf, 10, &val) < 0 || val != 0)
                return -EINVAL;
@@ -1584,7 +1620,7 @@ static ssize_t clear_intrusion(struct device *dev, struct device_attribute
        if (config < 0) {
                count = config;
        } else {
-               config |= 1 << 5;
+               config |= BIT(5);
                it87_write_value(data, IT87_REG_CONFIG, config);
                /* Invalidate cache to force re-read */
                data->valid = 0;
@@ -1615,29 +1651,30 @@ static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
                          show_alarm, clear_intrusion, 4);
 
 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
-               char *buf)
+                        char *buf)
 {
-       int bitnr = to_sensor_dev_attr(attr)->index;
        struct it87_data *data = it87_update_device(dev);
+       int bitnr = to_sensor_dev_attr(attr)->index;
+
        return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
 }
+
 static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
-               const char *buf, size_t count)
+                       const char *buf, size_t count)
 {
        int bitnr = to_sensor_dev_attr(attr)->index;
        struct it87_data *data = dev_get_drvdata(dev);
        long val;
 
-       if (kstrtol(buf, 10, &val) < 0
-        || (val != 0 && val != 1))
+       if (kstrtol(buf, 10, &val) < 0 || (val != 0 && val != 1))
                return -EINVAL;
 
        mutex_lock(&data->update_lock);
        data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
        if (val)
-               data->beeps |= (1 << bitnr);
+               data->beeps |= BIT(bitnr);
        else
-               data->beeps &= ~(1 << bitnr);
+               data->beeps &= ~BIT(bitnr);
        it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
        mutex_unlock(&data->update_lock);
        return count;
@@ -1665,13 +1702,15 @@ static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2);
 static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2);
 
 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
-               char *buf)
+                           char *buf)
 {
        struct it87_data *data = dev_get_drvdata(dev);
+
        return sprintf(buf, "%u\n", data->vrm);
 }
+
 static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
-               const char *buf, size_t count)
+                            const char *buf, size_t count)
 {
        struct it87_data *data = dev_get_drvdata(dev);
        unsigned long val;
@@ -1686,15 +1725,16 @@ static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
 
 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
-               char *buf)
+                           char *buf)
 {
        struct it87_data *data = it87_update_device(dev);
-       return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
+
+       return sprintf(buf, "%ld\n", (long)vid_from_reg(data->vid, data->vrm));
 }
 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
 
 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
-               char *buf)
+                         char *buf)
 {
        static const char * const labels[] = {
                "+5V",
@@ -1718,258 +1758,328 @@ static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
 /* AVCC3 */
 static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 0);
 
-static ssize_t show_name(struct device *dev, struct device_attribute
-                        *devattr, char *buf)
+static umode_t it87_in_is_visible(struct kobject *kobj,
+                                 struct attribute *attr, int index)
 {
+       struct device *dev = container_of(kobj, struct device, kobj);
        struct it87_data *data = dev_get_drvdata(dev);
-       return sprintf(buf, "%s\n", data->name);
+       int i = index / 5;      /* voltage index */
+       int a = index % 5;      /* attribute index */
+
+       if (index >= 40) {      /* in8 and higher only have input attributes */
+               i = index - 40 + 8;
+               a = 0;
+       }
+
+       if (!(data->has_in & BIT(i)))
+               return 0;
+
+       if (a == 4 && !data->has_beep)
+               return 0;
+
+       return attr->mode;
 }
-static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
 
-static struct attribute *it87_attributes_in[10][5] = {
-{
+static struct attribute *it87_attributes_in[] = {
        &sensor_dev_attr_in0_input.dev_attr.attr,
        &sensor_dev_attr_in0_min.dev_attr.attr,
        &sensor_dev_attr_in0_max.dev_attr.attr,
        &sensor_dev_attr_in0_alarm.dev_attr.attr,
-       NULL
-}, {
+       &sensor_dev_attr_in0_beep.dev_attr.attr,        /* 4 */
+
        &sensor_dev_attr_in1_input.dev_attr.attr,
        &sensor_dev_attr_in1_min.dev_attr.attr,
        &sensor_dev_attr_in1_max.dev_attr.attr,
        &sensor_dev_attr_in1_alarm.dev_attr.attr,
-       NULL
-}, {
+       &sensor_dev_attr_in1_beep.dev_attr.attr,        /* 9 */
+
        &sensor_dev_attr_in2_input.dev_attr.attr,
        &sensor_dev_attr_in2_min.dev_attr.attr,
        &sensor_dev_attr_in2_max.dev_attr.attr,
        &sensor_dev_attr_in2_alarm.dev_attr.attr,
-       NULL
-}, {
+       &sensor_dev_attr_in2_beep.dev_attr.attr,        /* 14 */
+
        &sensor_dev_attr_in3_input.dev_attr.attr,
        &sensor_dev_attr_in3_min.dev_attr.attr,
        &sensor_dev_attr_in3_max.dev_attr.attr,
        &sensor_dev_attr_in3_alarm.dev_attr.attr,
-       NULL
-}, {
+       &sensor_dev_attr_in3_beep.dev_attr.attr,        /* 19 */
+
        &sensor_dev_attr_in4_input.dev_attr.attr,
        &sensor_dev_attr_in4_min.dev_attr.attr,
        &sensor_dev_attr_in4_max.dev_attr.attr,
        &sensor_dev_attr_in4_alarm.dev_attr.attr,
-       NULL
-}, {
+       &sensor_dev_attr_in4_beep.dev_attr.attr,        /* 24 */
+
        &sensor_dev_attr_in5_input.dev_attr.attr,
        &sensor_dev_attr_in5_min.dev_attr.attr,
        &sensor_dev_attr_in5_max.dev_attr.attr,
        &sensor_dev_attr_in5_alarm.dev_attr.attr,
-       NULL
-}, {
+       &sensor_dev_attr_in5_beep.dev_attr.attr,        /* 29 */
+
        &sensor_dev_attr_in6_input.dev_attr.attr,
        &sensor_dev_attr_in6_min.dev_attr.attr,
        &sensor_dev_attr_in6_max.dev_attr.attr,
        &sensor_dev_attr_in6_alarm.dev_attr.attr,
-       NULL
-}, {
+       &sensor_dev_attr_in6_beep.dev_attr.attr,        /* 34 */
+
        &sensor_dev_attr_in7_input.dev_attr.attr,
        &sensor_dev_attr_in7_min.dev_attr.attr,
        &sensor_dev_attr_in7_max.dev_attr.attr,
        &sensor_dev_attr_in7_alarm.dev_attr.attr,
-       NULL
-}, {
-       &sensor_dev_attr_in8_input.dev_attr.attr,
-       NULL
-}, {
-       &sensor_dev_attr_in9_input.dev_attr.attr,
-       NULL
-} };
-
-static const struct attribute_group it87_group_in[10] = {
-       { .attrs = it87_attributes_in[0] },
-       { .attrs = it87_attributes_in[1] },
-       { .attrs = it87_attributes_in[2] },
-       { .attrs = it87_attributes_in[3] },
-       { .attrs = it87_attributes_in[4] },
-       { .attrs = it87_attributes_in[5] },
-       { .attrs = it87_attributes_in[6] },
-       { .attrs = it87_attributes_in[7] },
-       { .attrs = it87_attributes_in[8] },
-       { .attrs = it87_attributes_in[9] },
+       &sensor_dev_attr_in7_beep.dev_attr.attr,        /* 39 */
+
+       &sensor_dev_attr_in8_input.dev_attr.attr,       /* 40 */
+       &sensor_dev_attr_in9_input.dev_attr.attr,       /* 41 */
+       &sensor_dev_attr_in10_input.dev_attr.attr,      /* 41 */
+       &sensor_dev_attr_in11_input.dev_attr.attr,      /* 41 */
+       &sensor_dev_attr_in12_input.dev_attr.attr,      /* 41 */
 };
 
-static struct attribute *it87_attributes_temp[3][6] = {
+static const struct attribute_group it87_group_in = {
+       .attrs = it87_attributes_in,
+       .is_visible = it87_in_is_visible,
+};
+
+static umode_t it87_temp_is_visible(struct kobject *kobj,
+                                   struct attribute *attr, int index)
 {
+       struct device *dev = container_of(kobj, struct device, kobj);
+       struct it87_data *data = dev_get_drvdata(dev);
+       int i = index / 7;      /* temperature index */
+       int a = index % 7;      /* attribute index */
+
+       if (index >= 21) {
+               i = index - 21 + 3;
+               a = 0;
+       }
+
+       if (!(data->has_temp & BIT(i)))
+               return 0;
+
+       if (a == 5 && !has_temp_offset(data))
+               return 0;
+
+       if (a == 6 && !data->has_beep)
+               return 0;
+
+       return attr->mode;
+}
+
+static struct attribute *it87_attributes_temp[] = {
        &sensor_dev_attr_temp1_input.dev_attr.attr,
        &sensor_dev_attr_temp1_max.dev_attr.attr,
        &sensor_dev_attr_temp1_min.dev_attr.attr,
        &sensor_dev_attr_temp1_type.dev_attr.attr,
        &sensor_dev_attr_temp1_alarm.dev_attr.attr,
-       NULL
-} , {
-       &sensor_dev_attr_temp2_input.dev_attr.attr,
+       &sensor_dev_attr_temp1_offset.dev_attr.attr,    /* 5 */
+       &sensor_dev_attr_temp1_beep.dev_attr.attr,      /* 6 */
+
+       &sensor_dev_attr_temp2_input.dev_attr.attr,     /* 7 */
        &sensor_dev_attr_temp2_max.dev_attr.attr,
        &sensor_dev_attr_temp2_min.dev_attr.attr,
        &sensor_dev_attr_temp2_type.dev_attr.attr,
        &sensor_dev_attr_temp2_alarm.dev_attr.attr,
-       NULL
-} , {
-       &sensor_dev_attr_temp3_input.dev_attr.attr,
+       &sensor_dev_attr_temp2_offset.dev_attr.attr,
+       &sensor_dev_attr_temp2_beep.dev_attr.attr,
+
+       &sensor_dev_attr_temp3_input.dev_attr.attr,     /* 14 */
        &sensor_dev_attr_temp3_max.dev_attr.attr,
        &sensor_dev_attr_temp3_min.dev_attr.attr,
        &sensor_dev_attr_temp3_type.dev_attr.attr,
        &sensor_dev_attr_temp3_alarm.dev_attr.attr,
-       NULL
-} };
+       &sensor_dev_attr_temp3_offset.dev_attr.attr,
+       &sensor_dev_attr_temp3_beep.dev_attr.attr,
 
-static const struct attribute_group it87_group_temp[3] = {
-       { .attrs = it87_attributes_temp[0] },
-       { .attrs = it87_attributes_temp[1] },
-       { .attrs = it87_attributes_temp[2] },
+       &sensor_dev_attr_temp4_input.dev_attr.attr,     /* 21 */
+       &sensor_dev_attr_temp5_input.dev_attr.attr,
+       &sensor_dev_attr_temp6_input.dev_attr.attr,
+       NULL
 };
 
-static struct attribute *it87_attributes_temp_offset[] = {
-       &sensor_dev_attr_temp1_offset.dev_attr.attr,
-       &sensor_dev_attr_temp2_offset.dev_attr.attr,
-       &sensor_dev_attr_temp3_offset.dev_attr.attr,
+static const struct attribute_group it87_group_temp = {
+       .attrs = it87_attributes_temp,
+       .is_visible = it87_temp_is_visible,
 };
 
+static umode_t it87_is_visible(struct kobject *kobj,
+                              struct attribute *attr, int index)
+{
+       struct device *dev = container_of(kobj, struct device, kobj);
+       struct it87_data *data = dev_get_drvdata(dev);
+
+       if ((index == 2 || index == 3) && !data->has_vid)
+               return 0;
+
+       if (index > 3 && !(data->in_internal & BIT(index - 4)))
+               return 0;
+
+       return attr->mode;
+}
+
 static struct attribute *it87_attributes[] = {
        &dev_attr_alarms.attr,
        &sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
-       &dev_attr_name.attr,
+       &dev_attr_vrm.attr,                             /* 2 */
+       &dev_attr_cpu0_vid.attr,                        /* 3 */
+       &sensor_dev_attr_in3_label.dev_attr.attr,       /* 4 .. 7 */
+       &sensor_dev_attr_in7_label.dev_attr.attr,
+       &sensor_dev_attr_in8_label.dev_attr.attr,
+       &sensor_dev_attr_in9_label.dev_attr.attr,
        NULL
 };
 
 static const struct attribute_group it87_group = {
        .attrs = it87_attributes,
+       .is_visible = it87_is_visible,
 };
 
-static struct attribute *it87_attributes_in_beep[] = {
-       &sensor_dev_attr_in0_beep.dev_attr.attr,
-       &sensor_dev_attr_in1_beep.dev_attr.attr,
-       &sensor_dev_attr_in2_beep.dev_attr.attr,
-       &sensor_dev_attr_in3_beep.dev_attr.attr,
-       &sensor_dev_attr_in4_beep.dev_attr.attr,
-       &sensor_dev_attr_in5_beep.dev_attr.attr,
-       &sensor_dev_attr_in6_beep.dev_attr.attr,
-       &sensor_dev_attr_in7_beep.dev_attr.attr,
-       NULL,
-       NULL,
-};
+static umode_t it87_fan_is_visible(struct kobject *kobj,
+                                  struct attribute *attr, int index)
+{
+       struct device *dev = container_of(kobj, struct device, kobj);
+       struct it87_data *data = dev_get_drvdata(dev);
+       int i = index / 5;      /* fan index */
+       int a = index % 5;      /* attribute index */
 
-static struct attribute *it87_attributes_temp_beep[] = {
-       &sensor_dev_attr_temp1_beep.dev_attr.attr,
-       &sensor_dev_attr_temp2_beep.dev_attr.attr,
-       &sensor_dev_attr_temp3_beep.dev_attr.attr,
-};
+       if (index >= 15) {      /* fan 4..6 don't have divisor attributes */
+               i = (index - 15) / 4 + 3;
+               a = (index - 15) % 4;
+       }
+
+       if (!(data->has_fan & BIT(i)))
+               return 0;
 
-static struct attribute *it87_attributes_fan[6][3+1] = { {
+       if (a == 3) {                           /* beep */
+               if (!data->has_beep)
+                       return 0;
+               /* first fan beep attribute is writable */
+               if (i == __ffs(data->has_fan))
+                       return attr->mode | S_IWUSR;
+       }
+
+       if (a == 4 && has_16bit_fans(data))     /* divisor */
+               return 0;
+
+       return attr->mode;
+}
+
+static struct attribute *it87_attributes_fan[] = {
        &sensor_dev_attr_fan1_input.dev_attr.attr,
        &sensor_dev_attr_fan1_min.dev_attr.attr,
        &sensor_dev_attr_fan1_alarm.dev_attr.attr,
-       NULL
-}, {
+       &sensor_dev_attr_fan1_beep.dev_attr.attr,       /* 3 */
+       &sensor_dev_attr_fan1_div.dev_attr.attr,        /* 4 */
+
        &sensor_dev_attr_fan2_input.dev_attr.attr,
        &sensor_dev_attr_fan2_min.dev_attr.attr,
        &sensor_dev_attr_fan2_alarm.dev_attr.attr,
-       NULL
-}, {
+       &sensor_dev_attr_fan2_beep.dev_attr.attr,
+       &sensor_dev_attr_fan2_div.dev_attr.attr,        /* 9 */
+
        &sensor_dev_attr_fan3_input.dev_attr.attr,
        &sensor_dev_attr_fan3_min.dev_attr.attr,
        &sensor_dev_attr_fan3_alarm.dev_attr.attr,
-       NULL
-}, {
-       &sensor_dev_attr_fan4_input.dev_attr.attr,
+       &sensor_dev_attr_fan3_beep.dev_attr.attr,
+       &sensor_dev_attr_fan3_div.dev_attr.attr,        /* 14 */
+
+       &sensor_dev_attr_fan4_input.dev_attr.attr,      /* 15 */
        &sensor_dev_attr_fan4_min.dev_attr.attr,
        &sensor_dev_attr_fan4_alarm.dev_attr.attr,
-       NULL
-}, {
-       &sensor_dev_attr_fan5_input.dev_attr.attr,
+       &sensor_dev_attr_fan4_beep.dev_attr.attr,
+
+       &sensor_dev_attr_fan5_input.dev_attr.attr,      /* 19 */
        &sensor_dev_attr_fan5_min.dev_attr.attr,
        &sensor_dev_attr_fan5_alarm.dev_attr.attr,
-       NULL
-}, {
-       &sensor_dev_attr_fan6_input.dev_attr.attr,
+       &sensor_dev_attr_fan5_beep.dev_attr.attr,
+
+       &sensor_dev_attr_fan6_input.dev_attr.attr,      /* 23 */
        &sensor_dev_attr_fan6_min.dev_attr.attr,
        &sensor_dev_attr_fan6_alarm.dev_attr.attr,
+       &sensor_dev_attr_fan6_beep.dev_attr.attr,
        NULL
-} };
-
-static const struct attribute_group it87_group_fan[6] = {
-       { .attrs = it87_attributes_fan[0] },
-       { .attrs = it87_attributes_fan[1] },
-       { .attrs = it87_attributes_fan[2] },
-       { .attrs = it87_attributes_fan[3] },
-       { .attrs = it87_attributes_fan[4] },
-       { .attrs = it87_attributes_fan[5] },
 };
 
-static const struct attribute *it87_attributes_fan_div[] = {
-       &sensor_dev_attr_fan1_div.dev_attr.attr,
-       &sensor_dev_attr_fan2_div.dev_attr.attr,
-       &sensor_dev_attr_fan3_div.dev_attr.attr,
+static const struct attribute_group it87_group_fan = {
+       .attrs = it87_attributes_fan,
+       .is_visible = it87_fan_is_visible,
 };
 
-static struct attribute *it87_attributes_pwm[6][4+1] = { {
+static umode_t it87_pwm_is_visible(struct kobject *kobj,
+                                  struct attribute *attr, int index)
+{
+       struct device *dev = container_of(kobj, struct device, kobj);
+       struct it87_data *data = dev_get_drvdata(dev);
+       int i = index / 4;      /* pwm index */
+       int a = index % 4;      /* attribute index */
+
+       if (!(data->has_pwm & BIT(i)))
+               return 0;
+
+       /* pwmX_auto_channels_temp is only writable for old auto pwm */
+       if (a == 3 && has_old_autopwm(data))
+               return attr->mode | S_IWUSR;
+
+       /* pwm2_freq is writable if there are two pwm frequency selects */
+       if (has_pwm_freq2(data) && i == 1 && a == 2)
+               return attr->mode | S_IWUSR;
+
+       return attr->mode;
+}
+
+static struct attribute *it87_attributes_pwm[] = {
        &sensor_dev_attr_pwm1_enable.dev_attr.attr,
        &sensor_dev_attr_pwm1.dev_attr.attr,
        &sensor_dev_attr_pwm1_freq.dev_attr.attr,
        &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
-       NULL
-}, {
+
        &sensor_dev_attr_pwm2_enable.dev_attr.attr,
        &sensor_dev_attr_pwm2.dev_attr.attr,
        &sensor_dev_attr_pwm2_freq.dev_attr.attr,
        &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
-       NULL
-}, {
+
        &sensor_dev_attr_pwm3_enable.dev_attr.attr,
        &sensor_dev_attr_pwm3.dev_attr.attr,
        &sensor_dev_attr_pwm3_freq.dev_attr.attr,
        &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
-       NULL
-}, {
+
        &sensor_dev_attr_pwm4_enable.dev_attr.attr,
        &sensor_dev_attr_pwm4.dev_attr.attr,
        &sensor_dev_attr_pwm4_freq.dev_attr.attr,
        &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
-       NULL
-}, {
+
        &sensor_dev_attr_pwm5_enable.dev_attr.attr,
        &sensor_dev_attr_pwm5.dev_attr.attr,
        &sensor_dev_attr_pwm5_freq.dev_attr.attr,
        &sensor_dev_attr_pwm5_auto_channels_temp.dev_attr.attr,
-       NULL
-}, {
+
        &sensor_dev_attr_pwm6_enable.dev_attr.attr,
        &sensor_dev_attr_pwm6.dev_attr.attr,
        &sensor_dev_attr_pwm6_freq.dev_attr.attr,
        &sensor_dev_attr_pwm6_auto_channels_temp.dev_attr.attr,
+
        NULL
-} };
+};
+
+static const struct attribute_group it87_group_pwm = {
+       .attrs = it87_attributes_pwm,
+       .is_visible = it87_pwm_is_visible,
+};
 
-static umode_t pwm_attribute_mode(struct kobject *kobj, struct attribute *attr,
-                                 int index)
+static umode_t it87_auto_pwm_is_visible(struct kobject *kobj,
+                                       struct attribute *attr, int index)
 {
        struct device *dev = container_of(kobj, struct device, kobj);
        struct it87_data *data = dev_get_drvdata(dev);
+       int i = index / 9;      /* pwm index */
 
-       if (has_pwm_freq2(data) && index == 2)
-               return attr->mode | S_IWUSR;
+       if (!(data->has_pwm & BIT(i)))
+               return 0;
 
        return attr->mode;
 }
 
-static const struct attribute_group it87_group_pwm[6] = {
-       { .attrs = it87_attributes_pwm[0] },
-       { .attrs = it87_attributes_pwm[1],
-         .is_visible = pwm_attribute_mode, },
-       { .attrs = it87_attributes_pwm[2] },
-       { .attrs = it87_attributes_pwm[3] },
-       { .attrs = it87_attributes_pwm[4] },
-       { .attrs = it87_attributes_pwm[5] },
-};
-
-static struct attribute *it87_attributes_autopwm[3][9+1] = { {
+static struct attribute *it87_attributes_auto_pwm[] = {
        &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
        &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
        &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
@@ -1979,8 +2089,7 @@ static struct attribute *it87_attributes_autopwm[3][9+1] = { {
        &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
        &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
        &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
-       NULL
-}, {
+
        &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
        &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
        &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
@@ -1990,8 +2099,7 @@ static struct attribute *it87_attributes_autopwm[3][9+1] = { {
        &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
        &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
        &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
-       NULL
-}, {
+
        &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
        &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
        &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
@@ -2001,44 +2109,13 @@ static struct attribute *it87_attributes_autopwm[3][9+1] = { {
        &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
        &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
        &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
-       NULL
-} };
-
-static const struct attribute_group it87_group_autopwm[3] = {
-       { .attrs = it87_attributes_autopwm[0] },
-       { .attrs = it87_attributes_autopwm[1] },
-       { .attrs = it87_attributes_autopwm[2] },
-};
 
-static struct attribute *it87_attributes_fan_beep[] = {
-       &sensor_dev_attr_fan1_beep.dev_attr.attr,
-       &sensor_dev_attr_fan2_beep.dev_attr.attr,
-       &sensor_dev_attr_fan3_beep.dev_attr.attr,
-       &sensor_dev_attr_fan4_beep.dev_attr.attr,
-       &sensor_dev_attr_fan5_beep.dev_attr.attr,
-       &sensor_dev_attr_fan6_beep.dev_attr.attr,
-};
-
-static struct attribute *it87_attributes_vid[] = {
-       &dev_attr_vrm.attr,
-       &dev_attr_cpu0_vid.attr,
-       NULL
-};
-
-static const struct attribute_group it87_group_vid = {
-       .attrs = it87_attributes_vid,
-};
-
-static struct attribute *it87_attributes_label[] = {
-       &sensor_dev_attr_in3_label.dev_attr.attr,
-       &sensor_dev_attr_in7_label.dev_attr.attr,
-       &sensor_dev_attr_in8_label.dev_attr.attr,
-       &sensor_dev_attr_in9_label.dev_attr.attr,
-       NULL
+       NULL,
 };
 
-static const struct attribute_group it87_group_label = {
-       .attrs = it87_attributes_label,
+static const struct attribute_group it87_group_auto_pwm = {
+       .attrs = it87_attributes_auto_pwm,
+       .is_visible = it87_auto_pwm_is_visible,
 };
 
 /* SuperIO detection - will change isa_address if a chip is found */
@@ -2048,6 +2125,7 @@ static int __init it87_find(int sioaddr, unsigned short *address,
        int err;
        u16 chip_type;
        const char *board_vendor, *board_name;
+       const struct it87_devices *config;
 
        err = superio_enter(sioaddr);
        if (err)
@@ -2132,23 +2210,25 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                it87_devices[sio_data->type].suffix,
                *address, sio_data->revision);
 
-       /* in8 (Vbat) is always internal */
-       sio_data->internal = (1 << 2);
+       config = &it87_devices[sio_data->type];
 
        /* in7 (VSB or VCCH5V) is always internal on some chips */
-       if (it87_devices[sio_data->type].features & FEAT_IN7_INTERNAL)
-               sio_data->internal |= (1 << 1);
+       if (has_in7_internal(config))
+               sio_data->internal |= BIT(1);
+
+       /* in8 (Vbat) is always internal */
+       sio_data->internal |= BIT(2);
 
        /* in9 (AVCC3), always internal if supported */
-       if (it87_devices[sio_data->type].features & FEAT_AVCC3)
-               sio_data->internal |= (1 << 3); /* in9 is AVCC */
+       if (has_avcc3(config))
+               sio_data->internal |= BIT(3); /* in9 is AVCC */
        else
-               sio_data->skip_in |= (1 << 9);
+               sio_data->skip_in |= BIT(9);
 
-       if (!(it87_devices[sio_data->type].features & FEAT_SIX_PWM))
-               sio_data->skip_pwm |= (1 << 3) | (1 << 4) | (1 << 5);
+       if (!has_six_pwm(config))
+               sio_data->skip_pwm |= BIT(3) | BIT(4) | BIT(5);
 
-       if (!(it87_devices[sio_data->type].features & FEAT_VID))
+       if (!has_vid(config))
                sio_data->skip_vid = 1;
 
        /* Read GPIO config and VID value from LDN 7 (GPIO) */
@@ -2169,31 +2249,31 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                regef = superio_inb(sioaddr, IT87_SIO_SPI_REG);
 
                /* Check if fan3 is there or not */
-               if ((reg27 & (1 << 0)) || !(reg2c & (1 << 2)))
-                       sio_data->skip_fan |= (1 << 2);
-               if ((reg25 & (1 << 4))
-                   || (!(reg2a & (1 << 1)) && (regef & (1 << 0))))
-                       sio_data->skip_pwm |= (1 << 2);
+               if ((reg27 & BIT(0)) || !(reg2c & BIT(2)))
+                       sio_data->skip_fan |= BIT(2);
+               if ((reg25 & BIT(4)) ||
+                   (!(reg2a & BIT(1)) && (regef & BIT(0))))
+                       sio_data->skip_pwm |= BIT(2);
 
                /* Check if fan2 is there or not */
-               if (reg27 & (1 << 7))
-                       sio_data->skip_fan |= (1 << 1);
-               if (reg27 & (1 << 3))
-                       sio_data->skip_pwm |= (1 << 1);
+               if (reg27 & BIT(7))
+                       sio_data->skip_fan |= BIT(1);
+               if (reg27 & BIT(3))
+                       sio_data->skip_pwm |= BIT(1);
 
                /* VIN5 */
-               if ((reg27 & (1 << 0)) || (reg2c & (1 << 2)))
-                       sio_data->skip_in |= (1 << 5); /* No VIN5 */
+               if ((reg27 & BIT(0)) || (reg2c & BIT(2)))
+                       sio_data->skip_in |= BIT(5); /* No VIN5 */
 
                /* VIN6 */
-               if (reg27 & (1 << 1))
-                       sio_data->skip_in |= (1 << 6); /* No VIN6 */
+               if (reg27 & BIT(1))
+                       sio_data->skip_in |= BIT(6); /* No VIN6 */
 
                /*
                 * VIN7
                 * Does not depend on bit 2 of Reg2C, contrary to datasheet.
                 */
-               if (reg27 & (1 << 2)) {
+               if (reg27 & BIT(2)) {
                        /*
                         * The data sheet is a bit unclear regarding the
                         * internal voltage divider for VCCH5V. It says
@@ -2207,19 +2287,20 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                         * not the case, and ask the user to report if the
                         * resulting voltage is sane.
                         */
-                       if (!(reg2c & (1 << 1))) {
-                               reg2c |= (1 << 1);
-                               superio_outb(sioaddr, IT87_SIO_PINX2_REG, reg2c);
+                       if (!(reg2c & BIT(1))) {
+                               reg2c |= BIT(1);
+                               superio_outb(sioaddr, IT87_SIO_PINX2_REG,
+                                            reg2c);
                                pr_notice("Routing internal VCCH5V to in7.\n");
                        }
                        pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
                        pr_notice("Please report if it displays a reasonable voltage.\n");
                }
 
-               if (reg2c & (1 << 0))
-                       sio_data->internal |= (1 << 0);
-               if (reg2c & (1 << 1))
-                       sio_data->internal |= (1 << 1);
+               if (reg2c & BIT(0))
+                       sio_data->internal |= BIT(0);
+               if (reg2c & BIT(1))
+                       sio_data->internal |= BIT(1);
 
                sio_data->beep_pin = superio_inb(sioaddr,
                                                 IT87_SIO_BEEP_PIN_REG) & 0x3f;
@@ -2231,20 +2312,20 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
 
                /* Check if fan3 is there or not */
-               if (reg27 & (1 << 6))
-                       sio_data->skip_pwm |= (1 << 2);
-               if (reg27 & (1 << 7))
-                       sio_data->skip_fan |= (1 << 2);
+               if (reg27 & BIT(6))
+                       sio_data->skip_pwm |= BIT(2);
+               if (reg27 & BIT(7))
+                       sio_data->skip_fan |= BIT(2);
 
                /* Check if fan2 is there or not */
                reg29 = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
-               if (reg29 & (1 << 1))
-                       sio_data->skip_pwm |= (1 << 1);
-               if (reg29 & (1 << 2))
-                       sio_data->skip_fan |= (1 << 1);
+               if (reg29 & BIT(1))
+                       sio_data->skip_pwm |= BIT(1);
+               if (reg29 & BIT(2))
+                       sio_data->skip_fan |= BIT(1);
 
-               sio_data->skip_in |= (1 << 5); /* No VIN5 */
-               sio_data->skip_in |= (1 << 6); /* No VIN6 */
+               sio_data->skip_in |= BIT(5); /* No VIN5 */
+               sio_data->skip_in |= BIT(6); /* No VIN6 */
 
                sio_data->beep_pin = superio_inb(sioaddr,
                                                 IT87_SIO_BEEP_PIN_REG) & 0x3f;
@@ -2255,38 +2336,38 @@ static int __init it87_find(int sioaddr, unsigned short *address,
 
                /* Check for pwm5 */
                reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
-               if (reg & (1 << 6))
-                       sio_data->skip_pwm |= (1 << 4);
+               if (reg & BIT(6))
+                       sio_data->skip_pwm |= BIT(4);
 
                /* Check for fan4, fan5 */
                reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
-               if (!(reg & (1 << 5)))
-                       sio_data->skip_fan |= (1 << 3);
-               if (!(reg & (1 << 4)))
-                       sio_data->skip_fan |= (1 << 4);
+               if (!(reg & BIT(5)))
+                       sio_data->skip_fan |= BIT(3);
+               if (!(reg & BIT(4)))
+                       sio_data->skip_fan |= BIT(4);
 
                /* Check for pwm3, fan3 */
                reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
-               if (reg & (1 << 6))
-                       sio_data->skip_pwm |= (1 << 2);
-               if (reg & (1 << 7))
-                       sio_data->skip_fan |= (1 << 2);
+               if (reg & BIT(6))
+                       sio_data->skip_pwm |= BIT(2);
+               if (reg & BIT(7))
+                       sio_data->skip_fan |= BIT(2);
 
                /* Check for pwm4 */
                reg = superio_inb(sioaddr, IT87_SIO_GPIO4_REG);
-               if (!(reg & (1 << 4)))
-                       sio_data->skip_pwm |= (1 << 3);
+               if (!(reg & BIT(4)))
+                       sio_data->skip_pwm |= BIT(3);
 
                /* Check for pwm2, fan2 */
                reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
-               if (reg & (1 << 1))
-                       sio_data->skip_pwm |= (1 << 1);
-               if (reg & (1 << 2))
-                       sio_data->skip_fan |= (1 << 1);
+               if (reg & BIT(1))
+                       sio_data->skip_pwm |= BIT(1);
+               if (reg & BIT(2))
+                       sio_data->skip_fan |= BIT(1);
                /* Check for pwm6, fan6 */
-               if (!(reg & (1 << 7))) {
-                       sio_data->skip_pwm |= (1 << 5);
-                       sio_data->skip_fan |= (1 << 5);
+               if (!(reg & BIT(7))) {
+                       sio_data->skip_pwm |= BIT(5);
+                       sio_data->skip_fan |= BIT(5);
                }
 
                sio_data->beep_pin = superio_inb(sioaddr,
@@ -2307,26 +2388,26 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                }
 
                /* Check if fan3 is there or not */
-               if (reg & (1 << 6))
-                       sio_data->skip_pwm |= (1 << 2);
-               if (reg & (1 << 7))
-                       sio_data->skip_fan |= (1 << 2);
+               if (reg & BIT(6))
+                       sio_data->skip_pwm |= BIT(2);
+               if (reg & BIT(7))
+                       sio_data->skip_fan |= BIT(2);
 
                /* Check if fan2 is there or not */
                reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
-               if (reg & (1 << 1))
-                       sio_data->skip_pwm |= (1 << 1);
-               if (reg & (1 << 2))
-                       sio_data->skip_fan |= (1 << 1);
+               if (reg & BIT(1))
+                       sio_data->skip_pwm |= BIT(1);
+               if (reg & BIT(2))
+                       sio_data->skip_fan |= BIT(1);
 
-               if ((sio_data->type == it8718 || sio_data->type == it8720)
-                && !(sio_data->skip_vid))
+               if ((sio_data->type == it8718 || sio_data->type == it8720) &&
+                   !(sio_data->skip_vid))
                        sio_data->vid_value = superio_inb(sioaddr,
                                                          IT87_SIO_VID_REG);
 
                reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
 
-               uart6 = sio_data->type == it8782 && (reg & (1 << 2));
+               uart6 = sio_data->type == it8782 && (reg & BIT(2));
 
                /*
                 * The IT8720F has no VIN7 pin, so VCCH should always be
@@ -2342,15 +2423,15 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                 * If UART6 is enabled, re-route VIN7 to the internal divider
                 * if that is not already the case.
                 */
-               if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
-                       reg |= (1 << 1);
+               if ((sio_data->type == it8720 || uart6) && !(reg & BIT(1))) {
+                       reg |= BIT(1);
                        superio_outb(sioaddr, IT87_SIO_PINX2_REG, reg);
                        pr_notice("Routing internal VCCH to in7\n");
                }
-               if (reg & (1 << 0))
-                       sio_data->internal |= (1 << 0);
-               if (reg & (1 << 1))
-                       sio_data->internal |= (1 << 1);
+               if (reg & BIT(0))
+                       sio_data->internal |= BIT(0);
+               if (reg & BIT(1))
+                       sio_data->internal |= BIT(1);
 
                /*
                 * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
@@ -2362,8 +2443,8 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                 * temperature source here, skip_temp is preliminary.
                 */
                if (uart6) {
-                       sio_data->skip_in |= (1 << 5) | (1 << 6);
-                       sio_data->skip_temp |= (1 << 2);
+                       sio_data->skip_in |= BIT(5) | BIT(6);
+                       sio_data->skip_temp |= BIT(2);
                }
 
                sio_data->beep_pin = superio_inb(sioaddr,
@@ -2376,8 +2457,8 @@ static int __init it87_find(int sioaddr, unsigned short *address,
        board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
        board_name = dmi_get_system_info(DMI_BOARD_NAME);
        if (board_vendor && board_name) {
-               if (strcmp(board_vendor, "nVIDIA") == 0
-                && strcmp(board_name, "FN68PT") == 0) {
+               if (strcmp(board_vendor, "nVIDIA") == 0 &&
+                   strcmp(board_name, "FN68PT") == 0) {
                        /*
                         * On the Shuttle SN68PT, FAN_CTL2 is apparently not
                         * connected to a fan, but to something else. One user
@@ -2387,7 +2468,7 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                         * the same board is ever used in other systems.
                         */
                        pr_info("Disabling pwm2 due to hardware constraints\n");
-                       sio_data->skip_pwm = (1 << 1);
+                       sio_data->skip_pwm = BIT(1);
                }
        }
 
@@ -2396,56 +2477,6 @@ exit:
        return err;
 }
 
-static void it87_remove_files(struct device *dev)
-{
-       struct it87_data *data = dev_get_drvdata(dev);
-       struct it87_sio_data *sio_data = dev_get_platdata(dev);
-       int i;
-
-       sysfs_remove_group(&dev->kobj, &it87_group);
-       for (i = 0; i < 10; i++) {
-               if (sio_data->skip_in & (1 << i))
-                       continue;
-               sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
-               if (it87_attributes_in_beep[i])
-                       sysfs_remove_file(&dev->kobj,
-                                         it87_attributes_in_beep[i]);
-       }
-       for (i = 0; i < 3; i++) {
-               if (!(data->has_temp & (1 << i)))
-                       continue;
-               sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
-               if (has_temp_offset(data))
-                       sysfs_remove_file(&dev->kobj,
-                                         it87_attributes_temp_offset[i]);
-               if (sio_data->beep_pin)
-                       sysfs_remove_file(&dev->kobj,
-                                         it87_attributes_temp_beep[i]);
-       }
-       for (i = 0; i < 6; i++) {
-               if (!(data->has_fan & (1 << i)))
-                       continue;
-               sysfs_remove_group(&dev->kobj, &it87_group_fan[i]);
-               if (sio_data->beep_pin)
-                       sysfs_remove_file(&dev->kobj,
-                                         it87_attributes_fan_beep[i]);
-               if (i < 3 && !has_16bit_fans(data))
-                       sysfs_remove_file(&dev->kobj,
-                                         it87_attributes_fan_div[i]);
-       }
-       for (i = 0; i < 6; i++) {
-               if (sio_data->skip_pwm & (1 << i))
-                       continue;
-               sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
-               if (has_old_autopwm(data))
-                       sysfs_remove_group(&dev->kobj,
-                                          &it87_group_autopwm[i]);
-       }
-       if (!sio_data->skip_vid)
-               sysfs_remove_group(&dev->kobj, &it87_group_vid);
-       sysfs_remove_group(&dev->kobj, &it87_group_label);
-}
-
 /* Called when we have found a new IT87. */
 static void it87_init_device(struct platform_device *pdev)
 {
@@ -2467,7 +2498,7 @@ static void it87_init_device(struct platform_device *pdev)
         * these have separate registers for the temperature mapping and the
         * manual duty cycle.
         */
-       for (i = 0; i < 3; i++) {
+       for (i = 0; i < NUM_AUTO_PWM; i++) {
                data->pwm_temp_map[i] = i;
                data->pwm_duty[i] = 0x7f;       /* Full speed */
                data->auto_pwm[i][3] = 0x7f;    /* Full speed, hard-coded */
@@ -2480,12 +2511,12 @@ static void it87_init_device(struct platform_device *pdev)
         * means -1 degree C, which surprisingly doesn't trigger an alarm,
         * but is still confusing, so change to 127 degrees C.
         */
-       for (i = 0; i < 8; i++) {
+       for (i = 0; i < NUM_VIN_LIMIT; i++) {
                tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
                if (tmp == 0xff)
                        it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
        }
-       for (i = 0; i < 3; i++) {
+       for (i = 0; i < NUM_TEMP_LIMIT; i++) {
                tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i));
                if (tmp == 0xff)
                        it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127);
@@ -2530,15 +2561,12 @@ static void it87_init_device(struct platform_device *pdev)
 
        /* Check for additional fans */
        if (has_five_fans(data)) {
-               if (tmp & (1 << 4))
-                       data->has_fan |= (1 << 3); /* fan4 enabled */
-               if (tmp & (1 << 5))
-                       data->has_fan |= (1 << 4); /* fan5 enabled */
-       }
-
-       if (has_six_fans(data)) {
-               if (tmp & (1 << 2))
-                       data->has_fan |= (1 << 5); /* fan6 enabled */
+               if (tmp & BIT(4))
+                       data->has_fan |= BIT(3); /* fan4 enabled */
+               if (tmp & BIT(5))
+                       data->has_fan |= BIT(4); /* fan5 enabled */
+               if (has_six_fans(data) && (tmp & BIT(2)))
+                       data->has_fan |= BIT(5); /* fan6 enabled */
        }
 
        /* Fan input pins may be used for alternative functions */
@@ -2549,9 +2577,9 @@ static void it87_init_device(struct platform_device *pdev)
                /* The following code may be IT8620E specific */
                tmp = it87_read_value(data, IT87_REG_FAN_DIV);
                if ((tmp & 0xc0) == 0xc0)
-                       sio_data->skip_pwm |= (1 << 4);
-               if (!(tmp & (1 << 3)))
-                       sio_data->skip_pwm |= (1 << 5);
+                       sio_data->skip_pwm |= BIT(4);
+               if (!(tmp & BIT(3)))
+                       sio_data->skip_pwm |= BIT(5);
        }
 
        /* Start monitoring */
@@ -2570,6 +2598,7 @@ static int it87_check_pwm(struct device *dev)
         * disable pwm control to protect the user.
         */
        int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
+
        if ((tmp & 0x87) == 0) {
                if (fix_pwm_polarity) {
                        /*
@@ -2580,7 +2609,7 @@ static int it87_check_pwm(struct device *dev)
                        int i;
                        u8 pwm[3];
 
-                       for (i = 0; i < 3; i++)
+                       for (i = 0; i < ARRAY_SIZE(pwm); i++)
                                pwm[i] = it87_read_value(data,
                                                         IT87_REG_PWM[i]);
 
@@ -2623,9 +2652,8 @@ static int it87_probe(struct platform_device *pdev)
        struct resource *res;
        struct device *dev = &pdev->dev;
        struct it87_sio_data *sio_data = dev_get_platdata(dev);
-       int err = 0, i;
        int enable_pwm_interface;
-       int fan_beep_need_rw;
+       struct device *hwmon_dev;
 
        res = platform_get_resource(pdev, IORESOURCE_IO, 0);
        if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
@@ -2645,7 +2673,6 @@ static int it87_probe(struct platform_device *pdev)
        data->features = it87_devices[sio_data->type].features;
        data->peci_mask = it87_devices[sio_data->type].peci_mask;
        data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
-       data->name = it87_devices[sio_data->type].name;
        /*
         * IT8705F Datasheet 0.4.1, 3h == Version G.
         * IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
@@ -2670,8 +2697,8 @@ static int it87_probe(struct platform_device *pdev)
        }
 
        /* Now, we do the remaining detection. */
-       if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
-        || it87_read_value(data, IT87_REG_CHIPID) != 0x90)
+       if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) ||
+           it87_read_value(data, IT87_REG_CHIPID) != 0x90)
                return -ENODEV;
 
        platform_set_drvdata(pdev, data);
@@ -2683,167 +2710,83 @@ static int it87_probe(struct platform_device *pdev)
 
        /* Starting with IT8721F, we handle scaling of internal voltages */
        if (has_12mv_adc(data)) {
-               if (sio_data->internal & (1 << 0))
-                       data->in_scaled |= (1 << 3);    /* in3 is AVCC */
-               if (sio_data->internal & (1 << 1))
-                       data->in_scaled |= (1 << 7);    /* in7 is VSB */
-               if (sio_data->internal & (1 << 2))
-                       data->in_scaled |= (1 << 8);    /* in8 is Vbat */
-               if (sio_data->internal & (1 << 3))
-                       data->in_scaled |= (1 << 9);    /* in9 is AVCC */
+               if (sio_data->internal & BIT(0))
+                       data->in_scaled |= BIT(3);      /* in3 is AVCC */
+               if (sio_data->internal & BIT(1))
+                       data->in_scaled |= BIT(7);      /* in7 is VSB */
+               if (sio_data->internal & BIT(2))
+                       data->in_scaled |= BIT(8);      /* in8 is Vbat */
+               if (sio_data->internal & BIT(3))
+                       data->in_scaled |= BIT(9);      /* in9 is AVCC */
        } else if (sio_data->type == it8781 || sio_data->type == it8782 ||
                   sio_data->type == it8783) {
-               if (sio_data->internal & (1 << 0))
-                       data->in_scaled |= (1 << 3);    /* in3 is VCC5V */
-               if (sio_data->internal & (1 << 1))
-                       data->in_scaled |= (1 << 7);    /* in7 is VCCH5V */
+               if (sio_data->internal & BIT(0))
+                       data->in_scaled |= BIT(3);      /* in3 is VCC5V */
+               if (sio_data->internal & BIT(1))
+                       data->in_scaled |= BIT(7);      /* in7 is VCCH5V */
        }
 
        data->has_temp = 0x07;
-       if (sio_data->skip_temp & (1 << 2)) {
-               if (sio_data->type == it8782
-                   && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
-                       data->has_temp &= ~(1 << 2);
-       }
-
-       /* Initialize the IT87 chip */
-       it87_init_device(pdev);
-
-       /* Register sysfs hooks */
-       err = sysfs_create_group(&dev->kobj, &it87_group);
-       if (err)
-               return err;
-
-       for (i = 0; i < 10; i++) {
-               if (sio_data->skip_in & (1 << i))
-                       continue;
-               err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
-               if (err)
-                       goto error;
-               if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
-                       err = sysfs_create_file(&dev->kobj,
-                                               it87_attributes_in_beep[i]);
-                       if (err)
-                               goto error;
-               }
+       if (sio_data->skip_temp & BIT(2)) {
+               if (sio_data->type == it8782 &&
+                   !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
+                       data->has_temp &= ~BIT(2);
        }
 
-       for (i = 0; i < 3; i++) {
-               if (!(data->has_temp & (1 << i)))
-                       continue;
-               err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
-               if (err)
-                       goto error;
-               if (has_temp_offset(data)) {
-                       err = sysfs_create_file(&dev->kobj,
-                                               it87_attributes_temp_offset[i]);
-                       if (err)
-                               goto error;
-               }
-               if (sio_data->beep_pin) {
-                       err = sysfs_create_file(&dev->kobj,
-                                               it87_attributes_temp_beep[i]);
-                       if (err)
-                               goto error;
-               }
+       data->in_internal = sio_data->internal;
+       data->has_in = 0x3ff & ~sio_data->skip_in;
+
+       if (has_six_temp(data)) {
+               u8 reg = it87_read_value(data, IT87_REG_TEMP456_ENABLE);
+
+               /* Check for additional temperature sensors */
+               if ((reg & 0x03) >= 0x02)
+                       data->has_temp |= BIT(3);
+               if (((reg >> 2) & 0x03) >= 0x02)
+                       data->has_temp |= BIT(4);
+               if (((reg >> 4) & 0x03) >= 0x02)
+                       data->has_temp |= BIT(5);
+
+               /* Check for additional voltage sensors */
+               if ((reg & 0x03) == 0x01)
+                       data->has_in |= BIT(10);
+               if (((reg >> 2) & 0x03) == 0x01)
+                       data->has_in |= BIT(11);
+               if (((reg >> 4) & 0x03) == 0x01)
+                       data->has_in |= BIT(12);
        }
 
-       /* Do not create fan files for disabled fans */
-       fan_beep_need_rw = 1;
-       for (i = 0; i < 6; i++) {
-               if (!(data->has_fan & (1 << i)))
-                       continue;
-               err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]);
-               if (err)
-                       goto error;
-
-               if (i < 3 && !has_16bit_fans(data)) {
-                       err = sysfs_create_file(&dev->kobj,
-                                               it87_attributes_fan_div[i]);
-                       if (err)
-                               goto error;
-               }
+       data->has_beep = !!sio_data->beep_pin;
 
-               if (sio_data->beep_pin) {
-                       err = sysfs_create_file(&dev->kobj,
-                                               it87_attributes_fan_beep[i]);
-                       if (err)
-                               goto error;
-                       if (!fan_beep_need_rw)
-                               continue;
-
-                       /*
-                        * As we have a single beep enable bit for all fans,
-                        * only the first enabled fan has a writable attribute
-                        * for it.
-                        */
-                       if (sysfs_chmod_file(&dev->kobj,
-                                            it87_attributes_fan_beep[i],
-                                            S_IRUGO | S_IWUSR))
-                               dev_dbg(dev, "chmod +w fan%d_beep failed\n",
-                                       i + 1);
-                       fan_beep_need_rw = 0;
-               }
-       }
-
-       if (enable_pwm_interface) {
-               for (i = 0; i < 6; i++) {
-                       if (sio_data->skip_pwm & (1 << i))
-                               continue;
-                       err = sysfs_create_group(&dev->kobj,
-                                                &it87_group_pwm[i]);
-                       if (err)
-                               goto error;
-
-                       if (!has_old_autopwm(data))
-                               continue;
-                       err = sysfs_create_group(&dev->kobj,
-                                                &it87_group_autopwm[i]);
-                       if (err)
-                               goto error;
-               }
-       }
+       /* Initialize the IT87 chip */
+       it87_init_device(pdev);
 
        if (!sio_data->skip_vid) {
+               data->has_vid = true;
                data->vrm = vid_which_vrm();
                /* VID reading from Super-I/O config space if available */
                data->vid = sio_data->vid_value;
-               err = sysfs_create_group(&dev->kobj, &it87_group_vid);
-               if (err)
-                       goto error;
-       }
-
-       /* Export labels for internal sensors */
-       for (i = 0; i < 4; i++) {
-               if (!(sio_data->internal & (1 << i)))
-                       continue;
-               err = sysfs_create_file(&dev->kobj,
-                                       it87_attributes_label[i]);
-               if (err)
-                       goto error;
-       }
-
-       data->hwmon_dev = hwmon_device_register(dev);
-       if (IS_ERR(data->hwmon_dev)) {
-               err = PTR_ERR(data->hwmon_dev);
-               goto error;
        }
 
-       return 0;
-
-error:
-       it87_remove_files(dev);
-       return err;
-}
+       /* Prepare for sysfs hooks */
+       data->groups[0] = &it87_group;
+       data->groups[1] = &it87_group_in;
+       data->groups[2] = &it87_group_temp;
+       data->groups[3] = &it87_group_fan;
 
-static int it87_remove(struct platform_device *pdev)
-{
-       struct it87_data *data = platform_get_drvdata(pdev);
+       if (enable_pwm_interface) {
+               data->has_pwm = BIT(ARRAY_SIZE(IT87_REG_PWM)) - 1;
+               data->has_pwm &= ~sio_data->skip_pwm;
 
-       hwmon_device_unregister(data->hwmon_dev);
-       it87_remove_files(&pdev->dev);
+               data->groups[4] = &it87_group_pwm;
+               if (has_old_autopwm(data))
+                       data->groups[5] = &it87_group_auto_pwm;
+       }
 
-       return 0;
+       hwmon_dev = devm_hwmon_device_register_with_groups(dev,
+                                       it87_devices[sio_data->type].name,
+                                       data, data->groups);
+       return PTR_ERR_OR_ZERO(hwmon_dev);
 }
 
 static struct platform_driver it87_driver = {
@@ -2851,7 +2794,6 @@ static struct platform_driver it87_driver = {
                .name   = DRVNAME,
        },
        .probe  = it87_probe,
-       .remove = it87_remove,
 };
 
 static int __init it87_device_add(int index, unsigned short address,
@@ -2948,7 +2890,6 @@ static void __exit sm_it87_exit(void)
        platform_driver_unregister(&it87_driver);
 }
 
-
 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
 module_param(update_vbat, bool, 0);