hwmon: (w83627ehf) Add support for Nuvoton NCT6775F and NCT6776F

This patch adds support for NCT6775F and NCT6776F to the w83627ehf driver.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Tested-by: Ian Dobson <i.dobson@planet-ian.com> (NCT6776F)
Tested-by: Zachary Marzec <zmarzec@gmail.com> (ASUS P8P67 PRO/NCT6776F)
Acked-by: Ian Dobson <i.dobson@planet-ian.com>

1 files changed, 652 insertions, 139 deletions

diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index 2f17f99e0ae1..b3b4f2b41dcf 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -6,6 +6,7 @@
                         Rudolf Marek <r.marek@assembler.cz>
                         David Hubbard <david.c.hubbard@gmail.com>
                         Daniel J Blueman <daniel.blueman@gmail.com>
+    Copyright (C) 2010  Sheng-Yuan Huang (Nuvoton) (PS00)
 
     Shamelessly ripped from the w83627hf driver
     Copyright (C) 2003  Mark Studebaker
@@ -40,6 +41,8 @@
     w83627dhg-p  9      5       4       3      0xb070 0xc1    0x5ca3
     w83667hg     9      5       3       3      0xa510 0xc1    0x5ca3
     w83667hg-b   9      5       3       4      0xb350 0xc1    0x5ca3
+    nct6775f     9      4       3       9      0xb470 0xc1    0x5ca3
+    nct6776f     9      5       3       9      0xC330 0xc1    0x5ca3
 */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -58,7 +61,8 @@
 #include <linux/io.h>
 #include "lm75.h"
 
-enum kinds { w83627ehf, w83627dhg, w83627dhg_p, w83667hg, w83667hg_b };
+enum kinds { w83627ehf, w83627dhg, w83627dhg_p, w83667hg, w83667hg_b, nct6775,
+        nct6776 };
 
 /* used to set data->name = w83627ehf_device_names[data->sio_kind] */
 static const char * const w83627ehf_device_names[] = {
@@ -67,6 +71,8 @@ static const char * const w83627ehf_device_names[] = {
         "w83627dhg",
         "w83667hg",
         "w83667hg",
+        "nct6775",
+        "nct6776",
 };
 
 static unsigned short force_id;
@@ -96,6 +102,8 @@ MODULE_PARM_DESC(force_id, "Override the detected device ID");
 #define SIO_W83627DHG_P_ID      0xb070
 #define SIO_W83667HG_ID         0xa510
 #define SIO_W83667HG_B_ID       0xb350
+#define SIO_NCT6775_ID          0xb470
+#define SIO_NCT6776_ID          0xc330
 #define SIO_ID_MASK             0xFFF0
 
 static inline void
@@ -176,6 +184,10 @@ static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0, 0x152, 0x252, 0 };
 #define W83627EHF_REG_DIODE             0x59
 #define W83627EHF_REG_SMI_OVT           0x4C
 
+/* NCT6775F has its own fan divider registers */
+#define NCT6775_REG_FANDIV1             0x506
+#define NCT6775_REG_FANDIV2             0x507
+
 #define W83627EHF_REG_ALARM1            0x459
 #define W83627EHF_REG_ALARM2            0x45A
 #define W83627EHF_REG_ALARM3            0x45B
@@ -214,6 +226,28 @@ static const u16 W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B[] = { 0x67, 0x69, 0x6b };
 static const u16 W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B[]
                                                 = { 0x68, 0x6a, 0x6c };
 
+static const u16 NCT6775_REG_TARGET[] = { 0x101, 0x201, 0x301 };
+static const u16 NCT6775_REG_FAN_MODE[] = { 0x102, 0x202, 0x302 };
+static const u16 NCT6775_REG_FAN_STOP_OUTPUT[] = { 0x105, 0x205, 0x305 };
+static const u16 NCT6775_REG_FAN_START_OUTPUT[] = { 0x106, 0x206, 0x306 };
+static const u16 NCT6775_REG_FAN_STOP_TIME[] = { 0x107, 0x207, 0x307 };
+static const u16 NCT6775_REG_PWM[] = { 0x109, 0x209, 0x309 };
+static const u16 NCT6775_REG_FAN_MAX_OUTPUT[] = { 0x10a, 0x20a, 0x30a };
+static const u16 NCT6775_REG_FAN_STEP_OUTPUT[] = { 0x10b, 0x20b, 0x30b };
+static const u16 NCT6776_REG_FAN[] = { 0x630, 0x632, 0x634, 0x636, 0x638 };
+static const u16 NCT6776_REG_FAN_MIN[] = { 0x63a, 0x63c, 0x63e, 0x640, 0x642};
+
+static const u16 NCT6775_REG_TEMP[]
+        = { 0x27, 0x150, 0x250, 0x73, 0x75, 0x77, 0x62b, 0x62c, 0x62d };
+static const u16 NCT6775_REG_TEMP_CONFIG[]
+        = { 0, 0x152, 0x252, 0, 0, 0, 0x628, 0x629, 0x62A };
+static const u16 NCT6775_REG_TEMP_HYST[]
+        = { 0x3a, 0x153, 0x253, 0, 0, 0, 0x673, 0x678, 0x67D };
+static const u16 NCT6775_REG_TEMP_OVER[]
+        = { 0x39, 0x155, 0x255, 0, 0, 0, 0x672, 0x677, 0x67C };
+static const u16 NCT6775_REG_TEMP_SOURCE[]
+        = { 0x621, 0x622, 0x623, 0x100, 0x200, 0x300, 0x624, 0x625, 0x626 };
+
 static const char *const w83667hg_b_temp_label[] = {
         "SYSTIN",
         "CPUTIN",
@@ -225,15 +259,71 @@ static const char *const w83667hg_b_temp_label[] = {
         "PECI Agent 4"
 };
 
-#define NUM_REG_TEMP    4
+static const char *const nct6775_temp_label[] = {
+        "",
+        "SYSTIN",
+        "CPUTIN",
+        "AUXTIN",
+        "AMD SB-TSI",
+        "PECI Agent 0",
+        "PECI Agent 1",
+        "PECI Agent 2",
+        "PECI Agent 3",
+        "PECI Agent 4",
+        "PECI Agent 5",
+        "PECI Agent 6",
+        "PECI Agent 7",
+        "PCH_CHIP_CPU_MAX_TEMP",
+        "PCH_CHIP_TEMP",
+        "PCH_CPU_TEMP",
+        "PCH_MCH_TEMP",
+        "PCH_DIM0_TEMP",
+        "PCH_DIM1_TEMP",
+        "PCH_DIM2_TEMP",
+        "PCH_DIM3_TEMP"
+};
+
+static const char *const nct6776_temp_label[] = {
+        "",
+        "SYSTIN",
+        "CPUTIN",
+        "AUXTIN",
+        "SMBUSMASTER 0",
+        "SMBUSMASTER 1",
+        "SMBUSMASTER 2",
+        "SMBUSMASTER 3",
+        "SMBUSMASTER 4",
+        "SMBUSMASTER 5",
+        "SMBUSMASTER 6",
+        "SMBUSMASTER 7",
+        "PECI Agent 0",
+        "PECI Agent 1",
+        "PCH_CHIP_CPU_MAX_TEMP",
+        "PCH_CHIP_TEMP",
+        "PCH_CPU_TEMP",
+        "PCH_MCH_TEMP",
+        "PCH_DIM0_TEMP",
+        "PCH_DIM1_TEMP",
+        "PCH_DIM2_TEMP",
+        "PCH_DIM3_TEMP",
+        "BYTE_TEMP"
+};
+
+#define NUM_REG_TEMP    ARRAY_SIZE(NCT6775_REG_TEMP)
 
 static inline int is_word_sized(u16 reg)
 {
-        return (((reg & 0xff00) == 0x100
+        return ((((reg & 0xff00) == 0x100
               || (reg & 0xff00) == 0x200)
              && ((reg & 0x00ff) == 0x50
               || (reg & 0x00ff) == 0x53
-              || (reg & 0x00ff) == 0x55));
+              || (reg & 0x00ff) == 0x55))
+             || (reg & 0xfff0) == 0x630
+             || reg == 0x640 || reg == 0x642
+             || ((reg & 0xfff0) == 0x650
+                 && (reg & 0x000f) >= 0x06)
+             || reg == 0x73 || reg == 0x75 || reg == 0x77
+                );
 }
 
 /*
@@ -253,11 +343,20 @@ static inline u8 step_time_to_reg(unsigned int msec, u8 mode)
 }
 
 static inline unsigned int
-fan_from_reg(u8 reg, unsigned int div)
+fan_from_reg(int reg, u16 val, unsigned int div)
 {
-        if (reg == 0 || reg == 255)
+        if (val == 0)
                 return 0;
-        return 1350000U / (reg * div);
+        if (is_word_sized(reg)) {
+                if ((val & 0xff1f) == 0xff1f)
+                        return 0;
+                val = (val & 0x1f) | ((val & 0xff00) >> 3);
+        } else {
+                if (val == 255 || div == 0)
+                        return 0;
+                val *= div;
+        }
+        return 1350000U / val;
 }
 
 static inline unsigned int
@@ -274,7 +373,7 @@ temp_from_reg(u16 reg, s16 regval)
         return regval * 1000;
 }
 
-static inline s16
+static inline u16
 temp_to_reg(u16 reg, long temp)
 {
         if (is_word_sized(reg))
@@ -308,6 +407,10 @@ struct w83627ehf_data {
         struct device *hwmon_dev;
         struct mutex lock;
 
+        u16 reg_temp[NUM_REG_TEMP];
+        u16 reg_temp_over[NUM_REG_TEMP];
+        u16 reg_temp_hyst[NUM_REG_TEMP];
+        u16 reg_temp_config[NUM_REG_TEMP];
         u8 temp_src[NUM_REG_TEMP];
         const char * const *temp_label;
 
@@ -331,14 +434,15 @@ struct w83627ehf_data {
         u8 in[10];              /* Register value */
         u8 in_max[10];          /* Register value */
         u8 in_min[10];          /* Register value */
-        u8 fan[5];
-        u8 fan_min[5];
+        u16 fan[5];
+        u16 fan_min[5];
         u8 fan_div[5];
         u8 has_fan;             /* some fan inputs can be disabled */
+        u8 has_fan_min;         /* some fans don't have min register */
         u8 temp_type[3];
-        s16 temp[4];
-        s16 temp_max[4];
-        s16 temp_max_hyst[4];
+        s16 temp[9];
+        s16 temp_max[9];
+        s16 temp_max_hyst[9];
         u32 alarms;
 
         u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
@@ -364,7 +468,7 @@ struct w83627ehf_data {
         u8 vid;
         u8 vrm;
 
-        u8 have_temp;
+        u16 have_temp;
         u8 in6_skip;
 };
 
@@ -429,6 +533,34 @@ static int w83627ehf_write_value(struct w83627ehf_data *data, u16 reg,
 }
 
 /* This function assumes that the caller holds data->update_lock */
+static void nct6775_write_fan_div(struct w83627ehf_data *data, int nr)
+{
+        u8 reg;
+
+        switch (nr) {
+        case 0:
+                reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x70)
+                    | (data->fan_div[0] & 0x7);
+                w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg);
+                break;
+        case 1:
+                reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV1) & 0x7)
+                    | ((data->fan_div[1] << 4) & 0x70);
+                w83627ehf_write_value(data, NCT6775_REG_FANDIV1, reg);
+        case 2:
+                reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x70)
+                    | (data->fan_div[2] & 0x7);
+                w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg);
+                break;
+        case 3:
+                reg = (w83627ehf_read_value(data, NCT6775_REG_FANDIV2) & 0x7)
+                    | ((data->fan_div[3] << 4) & 0x70);
+                w83627ehf_write_value(data, NCT6775_REG_FANDIV2, reg);
+                break;
+        }
+}
+
+/* This function assumes that the caller holds data->update_lock */
 static void w83627ehf_write_fan_div(struct w83627ehf_data *data, int nr)
 {
         u8 reg;
@@ -479,6 +611,32 @@ static void w83627ehf_write_fan_div(struct w83627ehf_data *data, int nr)
         }
 }
 
+static void w83627ehf_write_fan_div_common(struct device *dev,
+                                           struct w83627ehf_data *data, int nr)
+{
+        struct w83627ehf_sio_data *sio_data = dev->platform_data;
+
+        if (sio_data->kind == nct6776)
+                ; /* no dividers, do nothing */
+        else if (sio_data->kind == nct6775)
+                nct6775_write_fan_div(data, nr);
+        else
+                w83627ehf_write_fan_div(data, nr);
+}
+
+static void nct6775_update_fan_div(struct w83627ehf_data *data)
+{
+        u8 i;
+
+        i = w83627ehf_read_value(data, NCT6775_REG_FANDIV1);
+        data->fan_div[0] = i & 0x7;
+        data->fan_div[1] = (i & 0x70) >> 4;
+        i = w83627ehf_read_value(data, NCT6775_REG_FANDIV2);
+        data->fan_div[2] = i & 0x7;
+        if (data->has_fan & (1<<3))
+                data->fan_div[3] = (i & 0x70) >> 4;
+}
+
 static void w83627ehf_update_fan_div(struct w83627ehf_data *data)
 {
         int i;
@@ -504,10 +662,79 @@ static void w83627ehf_update_fan_div(struct w83627ehf_data *data)
         }
 }
 
+static void w83627ehf_update_fan_div_common(struct device *dev,
+                                            struct w83627ehf_data *data)
+{
+        struct w83627ehf_sio_data *sio_data = dev->platform_data;
+
+        if (sio_data->kind == nct6776)
+                ; /* no dividers, do nothing */
+        else if (sio_data->kind == nct6775)
+                nct6775_update_fan_div(data);
+        else
+                w83627ehf_update_fan_div(data);
+}
+
+static void nct6775_update_pwm(struct w83627ehf_data *data)
+{
+        int i;
+        int pwmcfg, fanmodecfg;
+
+        for (i = 0; i < data->pwm_num; i++) {
+                pwmcfg = w83627ehf_read_value(data,
+                                              W83627EHF_REG_PWM_ENABLE[i]);
+                fanmodecfg = w83627ehf_read_value(data,
+                                                  NCT6775_REG_FAN_MODE[i]);
+                data->pwm_mode[i] =
+                  ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1;
+                data->pwm_enable[i] = ((fanmodecfg >> 4) & 7) + 1;
+                data->tolerance[i] = fanmodecfg & 0x0f;
+                data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]);
+        }
+}
+
+static void w83627ehf_update_pwm(struct w83627ehf_data *data)
+{
+        int i;
+        int pwmcfg = 0, tolerance = 0; /* shut up the compiler */
+
+        for (i = 0; i < data->pwm_num; i++) {
+                if (!(data->has_fan & (1 << i)))
+                        continue;
+
+                /* pwmcfg, tolerance mapped for i=0, i=1 to same reg */
+                if (i != 1) {
+                        pwmcfg = w83627ehf_read_value(data,
+                                        W83627EHF_REG_PWM_ENABLE[i]);
+                        tolerance = w83627ehf_read_value(data,
+                                        W83627EHF_REG_TOLERANCE[i]);
+                }
+                data->pwm_mode[i] =
+                        ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1) ? 0 : 1;
+                data->pwm_enable[i] = ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i])
+                                       & 3) + 1;
+                data->pwm[i] = w83627ehf_read_value(data, data->REG_PWM[i]);
+
+                data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0)) & 0x0f;
+        }
+}
+
+static void w83627ehf_update_pwm_common(struct device *dev,
+                                        struct w83627ehf_data *data)
+{
+        struct w83627ehf_sio_data *sio_data = dev->platform_data;
+
+        if (sio_data->kind == nct6775 || sio_data->kind == nct6776)
+                nct6775_update_pwm(data);
+        else
+                w83627ehf_update_pwm(data);
+}
+
 static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
 {
         struct w83627ehf_data *data = dev_get_drvdata(dev);
-        int pwmcfg = 0, tolerance = 0; /* shut up the compiler */
+        struct w83627ehf_sio_data *sio_data = dev->platform_data;
+
         int i;
 
         mutex_lock(&data->update_lock);
@@ -515,7 +742,7 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
         if (time_after(jiffies, data->last_updated + HZ + HZ/2)
          || !data->valid) {
                 /* Fan clock dividers */
-                w83627ehf_update_fan_div(data);
+                w83627ehf_update_fan_div_common(dev, data);
 
                 /* Measured voltages and limits */
                 for (i = 0; i < data->in_num; i++) {
@@ -533,23 +760,29 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
                                 continue;
 
                         data->fan[i] = w83627ehf_read_value(data,
-                                       data->REG_FAN[i]);
-                        data->fan_min[i] = w83627ehf_read_value(data,
+                                                            data->REG_FAN[i]);
+
+                        if (data->has_fan_min & (1 << i))
+                                data->fan_min[i] = w83627ehf_read_value(data,
                                            data->REG_FAN_MIN[i]);
 
                         /* If we failed to measure the fan speed and clock
                            divider can be increased, let's try that for next
                            time */
-                        if (data->fan[i] == 0xff
-                         && data->fan_div[i] < 0x07) {
+                        if (!is_word_sized(data->REG_FAN[i])
+                            && (data->fan[i] == 0xff
+                                || (sio_data->kind == nct6775
+                                    && data->fan[i] == 0x00))
+                            && data->fan_div[i] < 0x07) {
                                 dev_dbg(dev, "Increasing fan%d "
                                         "clock divider from %u to %u\n",
                                         i + 1, div_from_reg(data->fan_div[i]),
                                         div_from_reg(data->fan_div[i] + 1));
                                 data->fan_div[i]++;
-                                w83627ehf_write_fan_div(data, i);
+                                w83627ehf_write_fan_div_common(dev, data, i);
                                 /* Preserve min limit if possible */
-                                if (data->fan_min[i] >= 2
+                                if ((data->has_fan_min & (1 << i))
+                                 && data->fan_min[i] >= 2
                                  && data->fan_min[i] != 255)
                                         w83627ehf_write_value(data,
                                                 data->REG_FAN_MIN[i],
@@ -557,64 +790,54 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
                         }
                 }
 
+                w83627ehf_update_pwm_common(dev, data);
+
                 for (i = 0; i < data->pwm_num; i++) {
                         if (!(data->has_fan & (1 << i)))
                                 continue;
 
-                        /* pwmcfg, tolerance mapped for i=0, i=1 to same reg */
-                        if (i != 1) {
-                                pwmcfg = w83627ehf_read_value(data,
-                                                W83627EHF_REG_PWM_ENABLE[i]);
-                                tolerance = w83627ehf_read_value(data,
-                                                W83627EHF_REG_TOLERANCE[i]);
-                        }
-                        data->pwm_mode[i] =
-                                ((pwmcfg >> W83627EHF_PWM_MODE_SHIFT[i]) & 1)
-                                ? 0 : 1;
-                        data->pwm_enable[i] =
-                                ((pwmcfg >> W83627EHF_PWM_ENABLE_SHIFT[i])
-                                & 3) + 1;
-                        data->pwm[i] = w83627ehf_read_value(data,
-                                                            data->REG_PWM[i]);
-                        data->fan_start_output[i] = w83627ehf_read_value(data,
-                                        data->REG_FAN_START_OUTPUT[i]);
-                        data->fan_stop_output[i] = w83627ehf_read_value(data,
-                                        data->REG_FAN_STOP_OUTPUT[i]);
-                        data->fan_stop_time[i] = w83627ehf_read_value(data,
-                                        data->REG_FAN_STOP_TIME[i]);
-
-                        if (data->REG_FAN_MAX_OUTPUT[i] != 0xff)
+                        data->fan_start_output[i] =
+                          w83627ehf_read_value(data,
+                                               data->REG_FAN_START_OUTPUT[i]);
+                        data->fan_stop_output[i] =
+                          w83627ehf_read_value(data,
+                                               data->REG_FAN_STOP_OUTPUT[i]);
+                        data->fan_stop_time[i] =
+                          w83627ehf_read_value(data,
+                                               data->REG_FAN_STOP_TIME[i]);
+
+                        if (data->REG_FAN_MAX_OUTPUT &&
+                            data->REG_FAN_MAX_OUTPUT[i] != 0xff)
                                 data->fan_max_output[i] =
                                   w83627ehf_read_value(data,
-                                               data->REG_FAN_MAX_OUTPUT[i]);
+                                                data->REG_FAN_MAX_OUTPUT[i]);
 
-                        if (data->REG_FAN_STEP_OUTPUT[i] != 0xff)
+                        if (data->REG_FAN_STEP_OUTPUT &&
+                            data->REG_FAN_STEP_OUTPUT[i] != 0xff)
                                 data->fan_step_output[i] =
                                   w83627ehf_read_value(data,
-                                               data->REG_FAN_STEP_OUTPUT[i]);
+                                                data->REG_FAN_STEP_OUTPUT[i]);
 
                         data->target_temp[i] =
                                 w83627ehf_read_value(data,
                                         data->REG_TARGET[i]) &
                                         (data->pwm_mode[i] == 1 ? 0x7f : 0xff);
-                        data->tolerance[i] = (tolerance >> (i == 1 ? 4 : 0))
-                                                                        & 0x0f;
                 }
 
                 /* Measured temperatures and limits */
                 for (i = 0; i < NUM_REG_TEMP; i++) {
                         if (!(data->have_temp & (1 << i)))
                                 continue;
-                        data->temp[i]
-                          = w83627ehf_read_value(data, W83627EHF_REG_TEMP[i]);
-                        if (i > 2)
-                                break;
-                        data->temp_max[i]
-                          = w83627ehf_read_value(data,
-                                                 W83627EHF_REG_TEMP_OVER[i]);
-                        data->temp_max_hyst[i]
-                          = w83627ehf_read_value(data,
-                                                 W83627EHF_REG_TEMP_HYST[i]);
+                        data->temp[i] = w83627ehf_read_value(data,
+                                                data->reg_temp[i]);
+                        if (data->reg_temp_over[i])
+                                data->temp_max[i]
+                                  = w83627ehf_read_value(data,
+                                                data->reg_temp_over[i]);
+                        if (data->reg_temp_hyst[i])
+                                data->temp_max_hyst[i]
+                                  = w83627ehf_read_value(data,
+                                                data->reg_temp_hyst[i]);
                 }
 
                 data->alarms = w83627ehf_read_value(data,
@@ -736,21 +959,29 @@ static struct sensor_device_attribute sda_in_max[] = {
         SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
 };
 
-#define show_fan_reg(reg) \
-static ssize_t \
-show_##reg(struct device *dev, struct device_attribute *attr, \
-           char *buf) \
-{ \
-        struct w83627ehf_data *data = w83627ehf_update_device(dev); \
-        struct sensor_device_attribute *sensor_attr = \
-                to_sensor_dev_attr(attr); \
-        int nr = sensor_attr->index; \
-        return sprintf(buf, "%d\n", \
-                       fan_from_reg(data->reg[nr], \
-                                    div_from_reg(data->fan_div[nr]))); \
+static ssize_t
+show_fan(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct w83627ehf_data *data = w83627ehf_update_device(dev);
+        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+        int nr = sensor_attr->index;
+        return sprintf(buf, "%d\n",
+                       fan_from_reg(data->REG_FAN[nr],
+                                    data->fan[nr],
+                                    div_from_reg(data->fan_div[nr])));
+}
+
+static ssize_t
+show_fan_min(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct w83627ehf_data *data = w83627ehf_update_device(dev);
+        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+        int nr = sensor_attr->index;
+        return sprintf(buf, "%d\n",
+                       fan_from_reg(data->REG_FAN_MIN[nr],
+                                    data->fan_min[nr],
+                                    div_from_reg(data->fan_div[nr])));
 }
-show_fan_reg(fan);
-show_fan_reg(fan_min);
 
 static ssize_t
 show_fan_div(struct device *dev, struct device_attribute *attr,
@@ -779,6 +1010,18 @@ store_fan_min(struct device *dev, struct device_attribute *attr,
                 return err;
 
         mutex_lock(&data->update_lock);
+        if (is_word_sized(data->REG_FAN_MIN[nr])) {
+                if (!val) {
+                        val = 0xff1f;
+                } else {
+                        if (val > 1350000U)
+                                val = 135000U;
+                        val = 1350000U / val;
+                        val = (val & 0x1f) | ((val << 3) & 0xff00);
+                }
+                data->fan_min[nr] = val;
+                goto done;      /* Leave fan divider alone */
+        }
         if (!val) {
                 /* No min limit, alarm disabled */
                 data->fan_min[nr] = 255;
@@ -790,14 +1033,16 @@ store_fan_min(struct device *dev, struct device_attribute *attr,
                 data->fan_min[nr] = 254;
                 new_div = 7; /* 128 == (1 << 7) */
                 dev_warn(dev, "fan%u low limit %lu below minimum %u, set to "
-                         "minimum\n", nr + 1, val, fan_from_reg(254, 128));
+                         "minimum\n", nr + 1, val,
+                         fan_from_reg(data->REG_FAN_MIN[nr], 254, 128));
         } else if (!reg) {
                 /* Speed above this value cannot possibly be represented,
                    even with the lowest divider (1) */
                 data->fan_min[nr] = 1;
                 new_div = 0; /* 1 == (1 << 0) */
                 dev_warn(dev, "fan%u low limit %lu above maximum %u, set to "
-                         "maximum\n", nr + 1, val, fan_from_reg(1, 1));
+                         "maximum\n", nr + 1, val,
+                         fan_from_reg(data->REG_FAN_MIN[nr], 1, 1));
         } else {
                 /* Automatically pick the best divider, i.e. the one such
                    that the min limit will correspond to a register value
@@ -827,10 +1072,11 @@ store_fan_min(struct device *dev, struct device_attribute *attr,
                         nr + 1, div_from_reg(data->fan_div[nr]),
                         div_from_reg(new_div));
                 data->fan_div[nr] = new_div;
-                w83627ehf_write_fan_div(data, nr);
+                w83627ehf_write_fan_div_common(dev, data, nr);
                 /* Give the chip time to sample a new speed value */
                 data->last_updated = jiffies;
         }
+done:
         w83627ehf_write_value(data, data->REG_FAN_MIN[nr],
                               data->fan_min[nr]);
         mutex_unlock(&data->update_lock);
@@ -884,7 +1130,7 @@ show_temp_label(struct device *dev, struct device_attribute *attr, char *buf)
         return sprintf(buf, "%s\n", data->temp_label[data->temp_src[nr]]);
 }
 
-#define show_temp_reg(REG, reg) \
+#define show_temp_reg(addr, reg) \
 static ssize_t \
 show_##reg(struct device *dev, struct device_attribute *attr, \
            char *buf) \
@@ -894,13 +1140,13 @@ show_##reg(struct device *dev, struct device_attribute *attr, \
                 to_sensor_dev_attr(attr); \
         int nr = sensor_attr->index; \
         return sprintf(buf, "%d\n", \
-                       temp_from_reg(W83627EHF_REG_##REG[nr], data->reg[nr])); \
+                       temp_from_reg(data->addr[nr], data->reg[nr])); \
 }
-show_temp_reg(TEMP, temp);
-show_temp_reg(TEMP_OVER, temp_max);
-show_temp_reg(TEMP_HYST, temp_max_hyst);
+show_temp_reg(reg_temp, temp);
+show_temp_reg(reg_temp_over, temp_max);
+show_temp_reg(reg_temp_hyst, temp_max_hyst);
 
-#define store_temp_reg(REG, reg) \
+#define store_temp_reg(addr, reg) \
 static ssize_t \
 store_##reg(struct device *dev, struct device_attribute *attr, \
             const char *buf, size_t count) \
@@ -915,14 +1161,14 @@ store_##reg(struct device *dev, struct device_attribute *attr, \
         if (err < 0) \
                 return err; \
         mutex_lock(&data->update_lock); \
-        data->reg[nr] = temp_to_reg(W83627EHF_REG_TEMP_##REG[nr], val); \
-        w83627ehf_write_value(data, W83627EHF_REG_TEMP_##REG[nr], \
+        data->reg[nr] = temp_to_reg(data->addr[nr], val); \
+        w83627ehf_write_value(data, data->addr[nr], \
                               data->reg[nr]); \
         mutex_unlock(&data->update_lock); \
         return count; \
 }
-store_temp_reg(OVER, temp_max);
-store_temp_reg(HYST, temp_max_hyst);
+store_temp_reg(reg_temp_over, temp_max);
+store_temp_reg(reg_temp_hyst, temp_max_hyst);
 
 static ssize_t
 show_temp_type(struct device *dev, struct device_attribute *attr, char *buf)
@@ -938,6 +1184,11 @@ static struct sensor_device_attribute sda_temp_input[] = {
         SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1),
         SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2),
         SENSOR_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3),
+        SENSOR_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4),
+        SENSOR_ATTR(temp6_input, S_IRUGO, show_temp, NULL, 5),
+        SENSOR_ATTR(temp7_input, S_IRUGO, show_temp, NULL, 6),
+        SENSOR_ATTR(temp8_input, S_IRUGO, show_temp, NULL, 7),
+        SENSOR_ATTR(temp9_input, S_IRUGO, show_temp, NULL, 8),
 };
 
 static struct sensor_device_attribute sda_temp_label[] = {
@@ -945,6 +1196,11 @@ static struct sensor_device_attribute sda_temp_label[] = {
         SENSOR_ATTR(temp2_label, S_IRUGO, show_temp_label, NULL, 1),
         SENSOR_ATTR(temp3_label, S_IRUGO, show_temp_label, NULL, 2),
         SENSOR_ATTR(temp4_label, S_IRUGO, show_temp_label, NULL, 3),
+        SENSOR_ATTR(temp5_label, S_IRUGO, show_temp_label, NULL, 4),
+        SENSOR_ATTR(temp6_label, S_IRUGO, show_temp_label, NULL, 5),
+        SENSOR_ATTR(temp7_label, S_IRUGO, show_temp_label, NULL, 6),
+        SENSOR_ATTR(temp8_label, S_IRUGO, show_temp_label, NULL, 7),
+        SENSOR_ATTR(temp9_label, S_IRUGO, show_temp_label, NULL, 8),
 };
 
 static struct sensor_device_attribute sda_temp_max[] = {
@@ -954,6 +1210,18 @@ static struct sensor_device_attribute sda_temp_max[] = {
                     store_temp_max, 1),
         SENSOR_ATTR(temp3_max, S_IRUGO | S_IWUSR, show_temp_max,
                     store_temp_max, 2),
+        SENSOR_ATTR(temp4_max, S_IRUGO | S_IWUSR, show_temp_max,
+                    store_temp_max, 3),
+        SENSOR_ATTR(temp5_max, S_IRUGO | S_IWUSR, show_temp_max,
+                    store_temp_max, 4),
+        SENSOR_ATTR(temp6_max, S_IRUGO | S_IWUSR, show_temp_max,
+                    store_temp_max, 5),
+        SENSOR_ATTR(temp7_max, S_IRUGO | S_IWUSR, show_temp_max,
+                    store_temp_max, 6),
+        SENSOR_ATTR(temp8_max, S_IRUGO | S_IWUSR, show_temp_max,
+                    store_temp_max, 7),
+        SENSOR_ATTR(temp9_max, S_IRUGO | S_IWUSR, show_temp_max,
+                    store_temp_max, 8),
 };
 
 static struct sensor_device_attribute sda_temp_max_hyst[] = {
@@ -963,6 +1231,18 @@ static struct sensor_device_attribute sda_temp_max_hyst[] = {
                     store_temp_max_hyst, 1),
         SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
                     store_temp_max_hyst, 2),
+        SENSOR_ATTR(temp4_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
+                    store_temp_max_hyst, 3),
+        SENSOR_ATTR(temp5_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
+                    store_temp_max_hyst, 4),
+        SENSOR_ATTR(temp6_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
+                    store_temp_max_hyst, 5),
+        SENSOR_ATTR(temp7_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
+                    store_temp_max_hyst, 6),
+        SENSOR_ATTR(temp8_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
+                    store_temp_max_hyst, 7),
+        SENSOR_ATTR(temp9_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
+                    store_temp_max_hyst, 8),
 };
 
 static struct sensor_device_attribute sda_temp_alarm[] = {
@@ -1048,6 +1328,7 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr,
                         const char *buf, size_t count)
 {
         struct w83627ehf_data *data = dev_get_drvdata(dev);
+        struct w83627ehf_sio_data *sio_data = dev->platform_data;
         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
         int nr = sensor_attr->index;
         unsigned long val;
@@ -1060,12 +1341,25 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr,
 
         if (!val || (val > 4 && val != data->pwm_enable_orig[nr]))
                 return -EINVAL;
+        /* SmartFan III mode is not supported on NCT6776F */
+        if (sio_data->kind == nct6776 && val == 4)
+                return -EINVAL;
+
         mutex_lock(&data->update_lock);
-        reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
         data->pwm_enable[nr] = val;
-        reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[nr]);
-        reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[nr];
-        w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
+        if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
+                reg = w83627ehf_read_value(data,
+                                           NCT6775_REG_FAN_MODE[nr]);
+                reg &= 0x0f;
+                reg |= (val - 1) << 4;
+                w83627ehf_write_value(data,
+                                      NCT6775_REG_FAN_MODE[nr], reg);
+        } else {
+                reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
+                reg &= ~(0x03 << W83627EHF_PWM_ENABLE_SHIFT[nr]);
+                reg |= (val - 1) << W83627EHF_PWM_ENABLE_SHIFT[nr];
+                w83627ehf_write_value(data, W83627EHF_REG_PWM_ENABLE[nr], reg);
+        }
         mutex_unlock(&data->update_lock);
         return count;
 }
@@ -1113,6 +1407,7 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
                         const char *buf, size_t count)
 {
         struct w83627ehf_data *data = dev_get_drvdata(dev);
+        struct w83627ehf_sio_data *sio_data = dev->platform_data;
         struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
         int nr = sensor_attr->index;
         u16 reg;
@@ -1127,13 +1422,22 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
         val = SENSORS_LIMIT(DIV_ROUND_CLOSEST(val, 1000), 0, 15);
 
         mutex_lock(&data->update_lock);
-        reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]);
-        data->tolerance[nr] = val;
-        if (nr == 1)
-                reg = (reg & 0x0f) | (val << 4);
-        else
+        if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
+                /* Limit tolerance further for NCT6776F */
+                if (sio_data->kind == nct6776 && val > 7)
+                        val = 7;
+                reg = w83627ehf_read_value(data, NCT6775_REG_FAN_MODE[nr]);
                 reg = (reg & 0xf0) | val;
-        w83627ehf_write_value(data, W83627EHF_REG_TOLERANCE[nr], reg);
+                w83627ehf_write_value(data, NCT6775_REG_FAN_MODE[nr], reg);
+        } else {
+                reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]);
+                if (nr == 1)
+                        reg = (reg & 0x0f) | (val << 4);
+                else
+                        reg = (reg & 0xf0) | val;
+                w83627ehf_write_value(data, W83627EHF_REG_TOLERANCE[nr], reg);
+        }
+        data->tolerance[nr] = val;
         mutex_unlock(&data->update_lock);
         return count;
 }
@@ -1350,7 +1654,8 @@ static void w83627ehf_device_remove_files(struct device *dev)
         for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) {
                 struct sensor_device_attribute *attr =
                   &sda_sf3_max_step_arrays[i];
-                if (data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff)
+                if (data->REG_FAN_STEP_OUTPUT &&
+                    data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff)
                         device_remove_file(dev, &attr->dev_attr);
         }
         for (i = 0; i < ARRAY_SIZE(sda_sf3_arrays_fan4); i++)
@@ -1381,10 +1686,10 @@ static void w83627ehf_device_remove_files(struct device *dev)
                         continue;
                 device_remove_file(dev, &sda_temp_input[i].dev_attr);
                 device_remove_file(dev, &sda_temp_label[i].dev_attr);
-                if (i > 2)
-                        break;
                 device_remove_file(dev, &sda_temp_max[i].dev_attr);
                 device_remove_file(dev, &sda_temp_max_hyst[i].dev_attr);
+                if (i > 2)
+                        continue;
                 device_remove_file(dev, &sda_temp_alarm[i].dev_attr);
                 device_remove_file(dev, &sda_temp_type[i].dev_attr);
         }
@@ -1409,13 +1714,13 @@ static inline void __devinit w83627ehf_init_device(struct w83627ehf_data *data)
         for (i = 0; i < NUM_REG_TEMP; i++) {
                 if (!(data->have_temp & (1 << i)))
                         continue;
-                if (!W83627EHF_REG_TEMP_CONFIG[i])
+                if (!data->reg_temp_config[i])
                         continue;
                 tmp = w83627ehf_read_value(data,
-                                           W83627EHF_REG_TEMP_CONFIG[i]);
+                                           data->reg_temp_config[i]);
                 if (tmp & 0x01)
                         w83627ehf_write_value(data,
-                                              W83627EHF_REG_TEMP_CONFIG[i],
+                                              data->reg_temp_config[i],
                                               tmp & 0xfe);
         }
 
@@ -1434,13 +1739,39 @@ static inline void __devinit w83627ehf_init_device(struct w83627ehf_data *data)
         }
 }
 
+static void w82627ehf_swap_tempreg(struct w83627ehf_data *data,
+                                   int r1, int r2)
+{
+        u16 tmp;
+
+        tmp = data->temp_src[r1];
+        data->temp_src[r1] = data->temp_src[r2];
+        data->temp_src[r2] = tmp;
+
+        tmp = data->reg_temp[r1];
+        data->reg_temp[r1] = data->reg_temp[r2];
+        data->reg_temp[r2] = tmp;
+
+        tmp = data->reg_temp_over[r1];
+        data->reg_temp_over[r1] = data->reg_temp_over[r2];
+        data->reg_temp_over[r2] = tmp;
+
+        tmp = data->reg_temp_hyst[r1];
+        data->reg_temp_hyst[r1] = data->reg_temp_hyst[r2];
+        data->reg_temp_hyst[r2] = tmp;
+
+        tmp = data->reg_temp_config[r1];
+        data->reg_temp_config[r1] = data->reg_temp_config[r2];
+        data->reg_temp_config[r2] = tmp;
+}
+
 static int __devinit w83627ehf_probe(struct platform_device *pdev)
 {
         struct device *dev = &pdev->dev;
         struct w83627ehf_sio_data *sio_data = dev->platform_data;
         struct w83627ehf_data *data;
         struct resource *res;
-        u8 fan4pin, fan5pin, en_vrm10;
+        u8 fan3pin, fan4pin, fan4min, fan5pin, en_vrm10;
         int i, err = 0;
 
         res = platform_get_resource(pdev, IORESOURCE_IO, 0);
@@ -1466,9 +1797,11 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
 
         /* 627EHG and 627EHF have 10 voltage inputs; 627DHG and 667HG have 9 */
         data->in_num = (sio_data->kind == w83627ehf) ? 10 : 9;
-        /* 667HG has 3 pwms */
+        /* 667HG, NCT6775F, and NCT6776F have 3 pwms */
         data->pwm_num = (sio_data->kind == w83667hg
-                         || sio_data->kind == w83667hg_b) ? 3 : 4;
+                         || sio_data->kind == w83667hg_b
+                         || sio_data->kind == nct6775
+                         || sio_data->kind == nct6776) ? 3 : 4;
 
         data->have_temp = 0x07;
         /* Check temp3 configuration bit for 667HG */
@@ -1479,15 +1812,98 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
                 if (reg & 0x01)
                         data->have_temp &= ~(1 << 2);
                 else
-                        data->in6_skip = 1; /* Either temp3 or in6 */
+                        data->in6_skip = 1;     /* either temp3 or in6 */
+        }
+
+        /* Deal with temperature register setup first. */
+        if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
+                int mask = 0;
+
+                /*
+                 * Display temperature sensor output only if it monitors
+                 * a source other than one already reported. Always display
+                 * first three temperature registers, though.
+                 */
+                for (i = 0; i < NUM_REG_TEMP; i++) {
+                        u8 src;
+
+                        data->reg_temp[i] = NCT6775_REG_TEMP[i];
+                        data->reg_temp_over[i] = NCT6775_REG_TEMP_OVER[i];
+                        data->reg_temp_hyst[i] = NCT6775_REG_TEMP_HYST[i];
+                        data->reg_temp_config[i] = NCT6775_REG_TEMP_CONFIG[i];
+
+                        src = w83627ehf_read_value(data,
+                                                   NCT6775_REG_TEMP_SOURCE[i]);
+                        src &= 0x1f;
+                        if (src && !(mask & (1 << src))) {
+                                data->have_temp |= 1 << i;
+                                mask |= 1 << src;
+                        }
+
+                        data->temp_src[i] = src;
+
+                        /*
+                         * Now do some register swapping if index 0..2 don't
+                         * point to SYSTIN(1), CPUIN(2), and AUXIN(3).
+                         * Idea is to have the first three attributes
+                         * report SYSTIN, CPUIN, and AUXIN if possible
+                         * without overriding the basic system configuration.
+                         */
+                        if (i > 0 && data->temp_src[0] != 1
+                            && data->temp_src[i] == 1)
+                                w82627ehf_swap_tempreg(data, 0, i);
+                        if (i > 1 && data->temp_src[1] != 2
+                            && data->temp_src[i] == 2)
+                                w82627ehf_swap_tempreg(data, 1, i);
+                        if (i > 2 && data->temp_src[2] != 3
+                            && data->temp_src[i] == 3)
+                                w82627ehf_swap_tempreg(data, 2, i);
+                }
+                if (sio_data->kind == nct6776) {
+                        /*
+                         * On NCT6776, AUXTIN and VIN3 pins are shared.
+                         * Only way to detect it is to check if AUXTIN is used
+                         * as a temperature source, and if that source is
+                         * enabled.
+                         *
+                         * If that is the case, disable in6, which reports VIN3.
+                         * Otherwise disable temp3.
+                         */
+                        if (data->temp_src[2] == 3) {
+                                u8 reg;
+
+                                if (data->reg_temp_config[2])
+                                        reg = w83627ehf_read_value(data,
+                                                data->reg_temp_config[2]);
+                                else
+                                        reg = 0; /* Assume AUXTIN is used */
+
+                                if (reg & 0x01)
+                                        data->have_temp &= ~(1 << 2);
+                                else
+                                        data->in6_skip = 1;
+                        }
+                }
+
+                data->temp_label = nct6776_temp_label;
         } else if (sio_data->kind == w83667hg_b) {
                 u8 reg;
 
+                /*
+                 * Temperature sources are selected with bank 0, registers 0x49
+                 * and 0x4a.
+                 */
+                for (i = 0; i < ARRAY_SIZE(W83627EHF_REG_TEMP); i++) {
+                        data->reg_temp[i] = W83627EHF_REG_TEMP[i];
+                        data->reg_temp_over[i] = W83627EHF_REG_TEMP_OVER[i];
+                        data->reg_temp_hyst[i] = W83627EHF_REG_TEMP_HYST[i];
+                        data->reg_temp_config[i] = W83627EHF_REG_TEMP_CONFIG[i];
+                }
                 reg = w83627ehf_read_value(data, 0x4a);
                 data->temp_src[0] = reg >> 5;
                 reg = w83627ehf_read_value(data, 0x49);
                 data->temp_src[1] = reg & 0x07;
-                data->temp_src[2] = (reg >> 4)  & 0x07;
+                data->temp_src[2] = (reg >> 4) & 0x07;
 
                 /*
                  * W83667HG-B has another temperature register at 0x7e.
@@ -1516,22 +1932,54 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
                         data->in6_skip = 1;
 
                 data->temp_label = w83667hg_b_temp_label;
+        } else {
+                /* Temperature sources are fixed */
+                for (i = 0; i < 3; i++) {
+                        data->reg_temp[i] = W83627EHF_REG_TEMP[i];
+                        data->reg_temp_over[i] = W83627EHF_REG_TEMP_OVER[i];
+                        data->reg_temp_hyst[i] = W83627EHF_REG_TEMP_HYST[i];
+                        data->reg_temp_config[i] = W83627EHF_REG_TEMP_CONFIG[i];
+                }
         }
 
-        data->REG_PWM = W83627EHF_REG_PWM;
-        data->REG_TARGET = W83627EHF_REG_TARGET;
-        data->REG_FAN = W83627EHF_REG_FAN;
-        data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
-        data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
-        data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT;
-        data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME;
-        data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
-        if (sio_data->kind == w83667hg_b) {
+        if (sio_data->kind == nct6775) {
+                data->REG_PWM = NCT6775_REG_PWM;
+                data->REG_TARGET = NCT6775_REG_TARGET;
+                data->REG_FAN = W83627EHF_REG_FAN;
+                data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
+                data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT;
+                data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT;
+                data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME;
+                data->REG_FAN_MAX_OUTPUT = NCT6775_REG_FAN_MAX_OUTPUT;
+                data->REG_FAN_STEP_OUTPUT = NCT6775_REG_FAN_STEP_OUTPUT;
+        } else if (sio_data->kind == nct6776) {
+                data->REG_PWM = NCT6775_REG_PWM;
+                data->REG_TARGET = NCT6775_REG_TARGET;
+                data->REG_FAN = NCT6776_REG_FAN;
+                data->REG_FAN_MIN = NCT6776_REG_FAN_MIN;
+                data->REG_FAN_START_OUTPUT = NCT6775_REG_FAN_START_OUTPUT;
+                data->REG_FAN_STOP_OUTPUT = NCT6775_REG_FAN_STOP_OUTPUT;
+                data->REG_FAN_STOP_TIME = NCT6775_REG_FAN_STOP_TIME;
+        } else if (sio_data->kind == w83667hg_b) {
+                data->REG_PWM = W83627EHF_REG_PWM;
+                data->REG_TARGET = W83627EHF_REG_TARGET;
+                data->REG_FAN = W83627EHF_REG_FAN;
+                data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
+                data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
+                data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT;
+                data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME;
                 data->REG_FAN_MAX_OUTPUT =
                   W83627EHF_REG_FAN_MAX_OUTPUT_W83667_B;
                 data->REG_FAN_STEP_OUTPUT =
                   W83627EHF_REG_FAN_STEP_OUTPUT_W83667_B;
         } else {
+                data->REG_PWM = W83627EHF_REG_PWM;
+                data->REG_TARGET = W83627EHF_REG_TARGET;
+                data->REG_FAN = W83627EHF_REG_FAN;
+                data->REG_FAN_MIN = W83627EHF_REG_FAN_MIN;
+                data->REG_FAN_START_OUTPUT = W83627EHF_REG_FAN_START_OUTPUT;
+                data->REG_FAN_STOP_OUTPUT = W83627EHF_REG_FAN_STOP_OUTPUT;
+                data->REG_FAN_STOP_TIME = W83627EHF_REG_FAN_STOP_TIME;
                 data->REG_FAN_MAX_OUTPUT =
                   W83627EHF_REG_FAN_MAX_OUTPUT_COMMON;
                 data->REG_FAN_STEP_OUTPUT =
@@ -1544,7 +1992,8 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
         data->vrm = vid_which_vrm();
         superio_enter(sio_data->sioreg);
         /* Read VID value */
-        if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
+        if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b ||
+            sio_data->kind == nct6775 || sio_data->kind == nct6776) {
                 /* W83667HG has different pins for VID input and output, so
                 we can get the VID input values directly at logical device D
                 0xe3. */
@@ -1595,12 +2044,27 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
         }
 
         /* fan4 and fan5 share some pins with the GPIO and serial flash */
-        if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
-                fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20;
+        if (sio_data->kind == nct6775) {
+                /* On NCT6775, fan4 shares pins with the fdc interface */
+                fan3pin = 1;
+                fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80);
+                fan4min = 0;
+                fan5pin = 0;
+        } else if (sio_data->kind == nct6776) {
+                fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40);
+                fan4pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x01);
+                fan5pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x02);
+                fan4min = fan4pin;
+        } else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
+                fan3pin = 1;
                 fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40;
+                fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20;
+                fan4min = fan4pin;
         } else {
-                fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02);
+                fan3pin = 1;
                 fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06);
+                fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02);
+                fan4min = fan4pin;
         }
         superio_exit(sio_data->sioreg);
 
@@ -1610,15 +2074,36 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
            connected fan5 as input unless they are emitting log 1, which
            is not the default. */
 
-        data->has_fan = 0x07; /* fan1, fan2 and fan3 */
-        i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
-        if ((i & (1 << 2)) && fan4pin)
-                data->has_fan |= (1 << 3);
-        if (!(i & (1 << 1)) && fan5pin)
-                data->has_fan |= (1 << 4);
+        data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */
+
+        data->has_fan |= (fan3pin << 2);
+        data->has_fan_min |= (fan3pin << 2);
+
+        /*
+         * NCT6775F and NCT6776F don't have the W83627EHF_REG_FANDIV1 register
+         */
+        if (sio_data->kind == nct6775 || sio_data->kind == nct6776) {
+                data->has_fan |= (fan4pin << 3) | (fan5pin << 4);
+                data->has_fan_min |= (fan4min << 3) | (fan5pin << 4);
+        } else {
+                i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1);
+                if ((i & (1 << 2)) && fan4pin) {
+                        data->has_fan |= (1 << 3);
+                        data->has_fan_min |= (1 << 3);
+                }
+                if (!(i & (1 << 1)) && fan5pin) {
+                        data->has_fan |= (1 << 4);
+                        data->has_fan_min |= (1 << 4);
+                }
+        }
 
         /* Read fan clock dividers immediately */
-        w83627ehf_update_fan_div(data);
+        w83627ehf_update_fan_div_common(dev, data);
+
+        /* Read pwm data to save original values */
+        w83627ehf_update_pwm_common(dev, data);
+        for (i = 0; i < data->pwm_num; i++)
+                data->pwm_enable_orig[i] = data->pwm_enable[i];
 
         /* Read pwm data to save original values */
         w83627ehf_update_pwm_common(dev, data);
@@ -1635,7 +2120,8 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
         for (i = 0; i < ARRAY_SIZE(sda_sf3_max_step_arrays); i++) {
                 struct sensor_device_attribute *attr =
                   &sda_sf3_max_step_arrays[i];
-                if (data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff) {
+                if (data->REG_FAN_STEP_OUTPUT &&
+                    data->REG_FAN_STEP_OUTPUT[attr->index] != 0xff) {
                         err = device_create_file(dev, &attr->dev_attr);
                         if (err)
                                 goto exit_remove;
@@ -1668,12 +2154,20 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
                         if ((err = device_create_file(dev,
                                         &sda_fan_input[i].dev_attr))
                                 || (err = device_create_file(dev,
-                                        &sda_fan_alarm[i].dev_attr))
-                                || (err = device_create_file(dev,
-                                        &sda_fan_div[i].dev_attr))
-                                || (err = device_create_file(dev,
-                                        &sda_fan_min[i].dev_attr)))
+                                        &sda_fan_alarm[i].dev_attr)))
                                 goto exit_remove;
+                        if (sio_data->kind != nct6776) {
+                                err = device_create_file(dev,
+                                                &sda_fan_div[i].dev_attr);
+                                if (err)
+                                        goto exit_remove;
+                        }
+                        if (data->has_fan_min & (1 << i)) {
+                                err = device_create_file(dev,
+                                                &sda_fan_min[i].dev_attr);
+                                if (err)
+                                        goto exit_remove;
+                        }
                         if (i < data->pwm_num &&
                                 ((err = device_create_file(dev,
                                         &sda_pwm[i].dev_attr))
@@ -1701,12 +2195,21 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev)
                         if (err)
                                 goto exit_remove;
                 }
+                if (data->reg_temp_over[i]) {
+                        err = device_create_file(dev,
+                                &sda_temp_max[i].dev_attr);
+                        if (err)
+                                goto exit_remove;
+                }
+                if (data->reg_temp_hyst[i]) {
+                        err = device_create_file(dev,
+                                &sda_temp_max_hyst[i].dev_attr);
+                        if (err)
+                                goto exit_remove;
+                }
                 if (i > 2)
-                        break;
-                if ((err = device_create_file(dev, &sda_temp_max[i].dev_attr))
-                        || (err = device_create_file(dev,
-                                &sda_temp_max_hyst[i].dev_attr))
-                        || (err = device_create_file(dev,
+                        continue;
+                if ((err = device_create_file(dev,
                                 &sda_temp_alarm[i].dev_attr))
                         || (err = device_create_file(dev,
                                 &sda_temp_type[i].dev_attr)))
@@ -1767,6 +2270,8 @@ static int __init w83627ehf_find(int sioaddr, unsigned short *addr,
         static const char __initdata sio_name_W83627DHG_P[] = "W83627DHG-P";
         static const char __initdata sio_name_W83667HG[] = "W83667HG";
         static const char __initdata sio_name_W83667HG_B[] = "W83667HG-B";
+        static const char __initdata sio_name_NCT6775[] = "NCT6775F";
+        static const char __initdata sio_name_NCT6776[] = "NCT6776F";
 
         u16 val;
         const char *sio_name;
@@ -1803,6 +2308,14 @@ static int __init w83627ehf_find(int sioaddr, unsigned short *addr,
                 sio_data->kind = w83667hg_b;
                 sio_name = sio_name_W83667HG_B;
                 break;
+        case SIO_NCT6775_ID:
+                sio_data->kind = nct6775;
+                sio_name = sio_name_NCT6775;
+                break;
+        case SIO_NCT6776_ID:
+                sio_data->kind = nct6776;
+                sio_name = sio_name_NCT6776;
+                break;
         default:
                 if (val != 0xffff)
                         pr_debug("unsupported chip ID: 0x%04x\n", val);