]> git.sur5r.net Git - groeck-it87/blobdiff - it87.c
Add driver removal notice
[groeck-it87] / it87.c
diff --git a/it87.c b/it87.c
index 50489971715ec2cfaf3f5d8296c90c5c4d6095d3..79bf6b14c0696772762cdbd4005c9fa4d7757501 100644 (file)
--- a/it87.c
+++ b/it87.c
@@ -11,6 +11,7 @@
  *  similar parts.  The other devices are supported by different drivers.
  *
  *  Supports: IT8603E  Super I/O chip w/LPC interface
+ *            IT8606E  Super I/O chip w/LPC interface
  *            IT8607E  Super I/O chip w/LPC interface
  *            IT8613E  Super I/O chip w/LPC interface
  *            IT8620E  Super I/O chip w/LPC interface
@@ -30,6 +31,8 @@
  *            IT8726F  Super I/O chip w/LPC interface
  *            IT8728F  Super I/O chip w/LPC interface
  *            IT8732F  Super I/O chip w/LPC interface
+ *            IT8736F  Super I/O chip w/LPC interface
+ *            IT8738E  Super I/O chip w/LPC interface
  *            IT8758E  Super I/O chip w/LPC interface
  *            IT8771E  Super I/O chip w/LPC interface
  *            IT8772E  Super I/O chip w/LPC interface
 #include <linux/io.h>
 #include "compat.h"
 
+#ifndef IT87_DRIVER_VERSION
+#define IT87_DRIVER_VERSION    "<not provided>"
+#endif
+
 #define DRVNAME "it87"
 
 enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
+            it8736, it8738,
             it8771, it8772, it8781, it8782, it8783, it8786, it8790,
-            it8792, it8603, it8607, it8613, it8620, it8622, it8625, it8628,
-            it8655, it8665, it8686 };
+            it8792, it8603, it8606, it8607, it8613, it8620, it8622, it8625,
+            it8628, it8655, it8665, it8686 };
 
 static unsigned short force_id;
-module_param(force_id, ushort, 0);
+module_param(force_id, ushort, 0000);
 MODULE_PARM_DESC(force_id, "Override the detected device ID");
 
 static bool ignore_resource_conflict;
-module_param(ignore_resource_conflict, bool, 0);
+module_param(ignore_resource_conflict, bool, 0000);
 MODULE_PARM_DESC(ignore_resource_conflict, "Ignore ACPI resource conflict");
 
+static bool mmio;
+module_param(mmio, bool, 0000);
+MODULE_PARM_DESC(mmio, "Use MMIO if available");
+
 static struct platform_device *it87_pdev[2];
 
 #define        REG_2E  0x2e    /* The register to read/write */
@@ -145,13 +157,10 @@ static inline int superio_enter(int ioreg)
         * Try to reserve ioreg and ioreg + 1 for exclusive access.
         */
        if (!request_muxed_region(ioreg, 2, DRVNAME))
-               goto error;
+               return -EBUSY;
 
        __superio_enter(ioreg);
        return 0;
-
-error:
-       return -EBUSY;
 }
 
 static inline void superio_exit(int ioreg, bool doexit)
@@ -173,6 +182,8 @@ static inline void superio_exit(int ioreg, bool doexit)
 #define IT8726F_DEVID 0x8726
 #define IT8728F_DEVID 0x8728
 #define IT8732F_DEVID 0x8732
+#define IT8736F_DEVID 0x8736
+#define IT8738E_DEVID 0x8738
 #define IT8792E_DEVID 0x8733
 #define IT8771E_DEVID 0x8771
 #define IT8772E_DEVID 0x8772
@@ -182,6 +193,7 @@ static inline void superio_exit(int ioreg, bool doexit)
 #define IT8786E_DEVID 0x8786
 #define IT8790E_DEVID 0x8790
 #define IT8603E_DEVID 0x8603
+#define IT8606E_DEVID 0x8606
 #define IT8607E_DEVID 0x8607
 #define IT8613E_DEVID 0x8613
 #define IT8620E_DEVID 0x8620
@@ -192,10 +204,14 @@ static inline void superio_exit(int ioreg, bool doexit)
 #define IT8655E_DEVID 0x8655
 #define IT8665E_DEVID 0x8665
 #define IT8686E_DEVID 0x8686
-#define IT87_ACT_REG  0x30
-#define IT87_BASE_REG 0x60
 
-/* Logical device 7 registers (IT8712F and later) */
+/* Logical device 4 (Environmental Monitor) registers */
+#define IT87_ACT_REG           0x30
+#define IT87_BASE_REG          0x60
+#define IT87_SPECIAL_CFG_REG   0xf3    /* special configuration register */
+
+/* Global configuration registers (IT8712F and later) */
+#define IT87_EC_HWM_MIO_REG    0x24    /* MMIO configuration register */
 #define IT87_SIO_GPIO1_REG     0x25
 #define IT87_SIO_GPIO2_REG     0x26
 #define IT87_SIO_GPIO3_REG     0x27
@@ -205,6 +221,8 @@ static inline void superio_exit(int ioreg, bool doexit)
 #define IT87_SIO_PINX1_REG     0x2a    /* Pin selection */
 #define IT87_SIO_PINX2_REG     0x2c    /* Pin selection */
 #define IT87_SIO_PINX4_REG     0x2d    /* Pin selection */
+
+/* Logical device 7 (GPIO) registers (IT8712F and later) */
 #define IT87_SIO_SPI_REG       0xef    /* SPI function pin select */
 #define IT87_SIO_VID_REG       0xfc    /* VID value */
 #define IT87_SIO_BEEP_PIN_REG  0xf6    /* Beep pin mapping */
@@ -232,11 +250,11 @@ static bool fix_pwm_polarity;
 
 /*----- The IT87 registers -----*/
 
-#define IT87_REG_CONFIG        0x00
+#define IT87_REG_CONFIG                0x00
 
-#define IT87_REG_ALARM1        0x01
-#define IT87_REG_ALARM2        0x02
-#define IT87_REG_ALARM3        0x03
+#define IT87_REG_ALARM1                0x01
+#define IT87_REG_ALARM2                0x02
+#define IT87_REG_ALARM3                0x03
 
 #define IT87_REG_BANK          0x06
 
@@ -244,14 +262,18 @@ static bool fix_pwm_polarity;
  * The IT8718F and IT8720F have the VID value in a different register, in
  * Super-I/O configuration space.
  */
-#define IT87_REG_VID           0x0a
+#define IT87_REG_VID           0x0a
+
+/* Interface Selection register on other chips */
+#define IT87_REG_IFSEL         0x0a
+
 /*
  * The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
  * for fan divisors. Later IT8712F revisions must use 16-bit tachometer
  * mode.
  */
-#define IT87_REG_FAN_DIV       0x0b
-#define IT87_REG_FAN_16BIT     0x0c
+#define IT87_REG_FAN_DIV       0x0b
+#define IT87_REG_FAN_16BIT     0x0c
 
 /*
  * Monitors:
@@ -266,18 +288,19 @@ 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_FAN_8665[] =  { 0x0d, 0x0e, 0x0f, 0x80, 0x82, 0x93 };
-static const u8 IT87_REG_FAN_MIN_8665[] =
-                                       0x10, 0x11, 0x12, 0x84, 0x86, 0xb2 };
+static const u8 IT87_REG_FAN_MIN_8665[] = {
+                                       0x10, 0x11, 0x12, 0x84, 0x86, 0xb2 };
 static const u8 IT87_REG_FANX_8665[] = { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x94 };
-static const u8 IT87_REG_FANX_MIN_8665[] =
-                                       0x1b, 0x1c, 0x1d, 0x85, 0x87, 0xb3 };
+static const u8 IT87_REG_FANX_MIN_8665[] = {
+                                       0x1b, 0x1c, 0x1d, 0x85, 0x87, 0xb3 };
 
 static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59, 0x5a, 0x90, 0x91 };
 
-static const u8 IT87_REG_TEMP_OFFSET_8686[] = { 0x56, 0x57, 0x59, 0x90, 0x91, 0x92 };
+static const u8 IT87_REG_TEMP_OFFSET_8686[] = {
+                                       0x56, 0x57, 0x59, 0x90, 0x91, 0x92 };
 
-#define IT87_REG_FAN_MAIN_CTRL 0x13
-#define IT87_REG_FAN_CTL       0x14
+#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_8665[] =  { 0x15, 0x16, 0x17, 0x1e, 0x1f, 0x92 };
@@ -287,25 +310,25 @@ static const u8 IT87_REG_PWM_DUTY[] =     { 0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab };
 static const u8 IT87_REG_VIN[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
                                    0x27, 0x28, 0x2f, 0x2c, 0x2d, 0x2e };
 
-#define IT87_REG_TEMP(nr)      (0x29 + (nr))
+#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)
+#define IT87_REG_VIN_MAX(nr)   (0x30 + (nr) * 2)
+#define IT87_REG_VIN_MIN(nr)   (0x31 + (nr) * 2)
 
 static const u8 IT87_REG_TEMP_HIGH[] = { 0x40, 0x42, 0x44, 0x46, 0xb4, 0xb6 };
 static const u8 IT87_REG_TEMP_LOW[] =  { 0x41, 0x43, 0x45, 0x47, 0xb5, 0xb7 };
 
-static const u8 IT87_REG_TEMP_HIGH_8686[] =
-                                       0x40, 0x42, 0x44, 0xb4, 0xb6, 0xb8 };
-static const u8 IT87_REG_TEMP_LOW_8686[] =
-                                       0x41, 0x43, 0x45, 0xb5, 0xb7, 0xb9 };
+static const u8 IT87_REG_TEMP_HIGH_8686[] = {
+                                       0x40, 0x42, 0x44, 0xb4, 0xb6, 0xb8 };
+static const u8 IT87_REG_TEMP_LOW_8686[] = {
+                                       0x41, 0x43, 0x45, 0xb5, 0xb7, 0xb9 };
 
-#define IT87_REG_VIN_ENABLE    0x50
-#define IT87_REG_TEMP_ENABLE   0x51
-#define IT87_REG_TEMP_EXTRA    0x55
-#define IT87_REG_BEEP_ENABLE   0x5c
+#define IT87_REG_VIN_ENABLE    0x50
+#define IT87_REG_TEMP_ENABLE   0x51
+#define IT87_REG_TEMP_EXTRA    0x55
+#define IT87_REG_BEEP_ENABLE   0x5c
 
-#define IT87_REG_CHIPID        0x58
+#define IT87_REG_CHIPID                0x58
 
 static const u8 IT87_REG_AUTO_BASE[] = { 0x60, 0x68, 0x70, 0x78, 0xa0, 0xa8 };
 
@@ -327,13 +350,15 @@ static const u16 IT87_REG_TEMP_SRC1[] =   { 0x21d, 0x21e, 0x21f };
 
 struct it87_devices {
        const char *name;
-       const char * const suffix;
+       const char * const model;
        u32 features;
        u8 num_temp_limit;
        u8 num_temp_offset;
        u8 num_temp_map;        /* Number of temperature sources for pwm */
        u8 peci_mask;
        u8 old_peci_mask;
+       u8 smbus_bitmap;        /* SMBus enable bits in extra config register */
+       u8 ec_special_config;
 };
 
 #define FEAT_12MV_ADC          BIT(0)
@@ -361,11 +386,13 @@ struct it87_devices {
 #define FEAT_FANCTL_ONOFF      BIT(23) /* chip has FAN_CTL ON/OFF */
 #define FEAT_11MV_ADC          BIT(24)
 #define FEAT_NEW_TEMPMAP       BIT(25) /* new temp input selection */
+#define FEAT_MMIO              BIT(26) /* Chip supports MMIO */
+#define FEAT_FOUR_TEMP         BIT(27)
 
 static const struct it87_devices it87_devices[] = {
        [it87] = {
                .name = "it87",
-               .suffix = "F",
+               .model = "IT87F",
                .features = FEAT_OLD_AUTOPWM | FEAT_FANCTL_ONOFF,
                                                /* may need to overwrite */
                .num_temp_limit = 3,
@@ -374,7 +401,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8712] = {
                .name = "it8712",
-               .suffix = "F",
+               .model = "IT8712F",
                .features = FEAT_OLD_AUTOPWM | FEAT_VID | FEAT_FANCTL_ONOFF,
                                                /* may need to overwrite */
                .num_temp_limit = 3,
@@ -383,7 +410,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8716] = {
                .name = "it8716",
-               .suffix = "F",
+               .model = "IT8716F",
                .features = FEAT_16BIT_FANS | FEAT_VID
                  | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_PWM_FREQ2
                  | FEAT_FANCTL_ONOFF,
@@ -393,7 +420,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8718] = {
                .name = "it8718",
-               .suffix = "F",
+               .model = "IT8718F",
                .features = FEAT_16BIT_FANS | FEAT_VID
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
                  | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
@@ -404,7 +431,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8720] = {
                .name = "it8720",
-               .suffix = "F",
+               .model = "IT8720F",
                .features = FEAT_16BIT_FANS | FEAT_VID
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS
                  | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
@@ -415,7 +442,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8721] = {
                .name = "it8721",
-               .suffix = "F",
+               .model = "IT8721F",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
                  | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_IN7_INTERNAL
@@ -428,7 +455,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8728] = {
                .name = "it8728",
-               .suffix = "F",
+               .model = "IT8728F",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_PECI | FEAT_FIVE_FANS
                  | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2 | FEAT_SCALING
@@ -440,20 +467,47 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8732] = {
                .name = "it8732",
-               .suffix = "F",
+               .model = "IT8732F",
                .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
                  | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
                  | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_FOUR_FANS
-                 | FEAT_FOUR_PWM | FEAT_FANCTL_ONOFF,
+                 | FEAT_FOUR_PWM | FEAT_FANCTL_ONOFF | FEAT_SCALING,
+               .num_temp_limit = 3,
+               .num_temp_offset = 3,
+               .num_temp_map = 3,
+               .peci_mask = 0x07,
+               .old_peci_mask = 0x02,  /* Actually reports PCH */
+       },
+       [it8736] = {
+               .name = "it8736",
+               .model = "IT8736F",
+               .features = FEAT_16BIT_FANS
+                 | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
+                 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_FOUR_FANS
+                 | FEAT_FANCTL_ONOFF | FEAT_SCALING,
                .num_temp_limit = 3,
                .num_temp_offset = 3,
                .num_temp_map = 3,
                .peci_mask = 0x07,
                .old_peci_mask = 0x02,  /* Actually reports PCH */
        },
+       [it8738] = {
+               .name = "it8738",
+               .model = "IT8738E",
+               .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
+                 | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
+                 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL
+                 | FEAT_FANCTL_ONOFF | FEAT_SCALING
+                 | FEAT_AVCC3,
+               .num_temp_limit = 3,
+               .num_temp_offset = 3,
+               .num_temp_map = 3,
+               .peci_mask = 0x07,
+               .old_peci_mask = 0x02,
+       },
        [it8771] = {
                .name = "it8771",
-               .suffix = "E",
+               .model = "IT8771E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
                  | FEAT_PWM_FREQ2 | FEAT_SCALING | FEAT_FANCTL_ONOFF,
@@ -468,7 +522,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8772] = {
                .name = "it8772",
-               .suffix = "E",
+               .model = "IT8772E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
                  | FEAT_PWM_FREQ2 | FEAT_SCALING | FEAT_FANCTL_ONOFF,
@@ -483,7 +537,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8781] = {
                .name = "it8781",
-               .suffix = "F",
+               .model = "IT8781F",
                .features = FEAT_16BIT_FANS
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2
                  | FEAT_FANCTL_ONOFF,
@@ -494,7 +548,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8782] = {
                .name = "it8782",
-               .suffix = "F",
+               .model = "IT8782F",
                .features = FEAT_16BIT_FANS
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2
                  | FEAT_FANCTL_ONOFF,
@@ -505,7 +559,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8783] = {
                .name = "it8783",
-               .suffix = "E/F",
+               .model = "IT8783E/F",
                .features = FEAT_16BIT_FANS
                  | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_PWM_FREQ2
                  | FEAT_FANCTL_ONOFF,
@@ -516,7 +570,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8786] = {
                .name = "it8786",
-               .suffix = "E",
+               .model = "IT8786E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
                  | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
@@ -527,7 +581,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8790] = {
                .name = "it8790",
-               .suffix = "E",
+               .model = "IT8790E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_10_9MV_ADC | FEAT_SCALING
                  | FEAT_16BIT_FANS | FEAT_TEMP_PECI
                  | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
@@ -538,7 +592,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8792] = {
                .name = "it8792",
-               .suffix = "E",
+               .model = "IT8792E/IT8795E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_10_9MV_ADC | FEAT_SCALING
                  | FEAT_16BIT_FANS | FEAT_TEMP_PECI
                  | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2 | FEAT_FANCTL_ONOFF,
@@ -549,7 +603,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8603] = {
                .name = "it8603",
-               .suffix = "E",
+               .model = "IT8603E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
                  | FEAT_AVCC3 | FEAT_PWM_FREQ2 | FEAT_SCALING,
@@ -558,9 +612,20 @@ static const struct it87_devices it87_devices[] = {
                .num_temp_map = 4,
                .peci_mask = 0x07,
        },
+       [it8606] = {
+               .name = "it8606",
+               .model = "IT8606E",
+               .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
+                 | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL
+                 | FEAT_AVCC3 | FEAT_PWM_FREQ2 | FEAT_SCALING,
+               .num_temp_limit = 3,
+               .num_temp_offset = 3,
+               .num_temp_map = 3,
+               .peci_mask = 0x07,
+       },
        [it8607] = {
                .name = "it8607",
-               .suffix = "E",
+               .model = "IT8607E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL | FEAT_NEW_TEMPMAP
                  | FEAT_AVCC3 | FEAT_PWM_FREQ2 | FEAT_SCALING
@@ -572,7 +637,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8613] = {
                .name = "it8613",
-               .suffix = "E",
+               .model = "IT8613E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_11MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_PECI | FEAT_FIVE_FANS
                  | FEAT_FIVE_PWM | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
@@ -584,7 +649,7 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8620] = {
                .name = "it8620",
-               .suffix = "E",
+               .model = "IT8620E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_PECI | FEAT_SIX_FANS
                  | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
@@ -597,19 +662,20 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8622] = {
                .name = "it8622",
-               .suffix = "E",
+               .model = "IT8622E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
-                 | FEAT_TEMP_PECI | FEAT_FIVE_FANS
+                 | FEAT_TEMP_PECI | FEAT_FIVE_FANS | FEAT_FOUR_TEMP
                  | FEAT_FIVE_PWM | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
                  | FEAT_AVCC3 | FEAT_VIN3_5V | FEAT_SCALING,
                .num_temp_limit = 3,
                .num_temp_offset = 3,
                .num_temp_map = 4,
-               .peci_mask = 0x07,
+               .peci_mask = 0x0f,
+               .smbus_bitmap = BIT(1) | BIT(2),
        },
        [it8625] = {
                .name = "it8625",
-               .suffix = "E",
+               .model = "IT8625E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
                  | FEAT_AVCC3 | FEAT_NEW_TEMPMAP
                  | FEAT_11MV_ADC | FEAT_IN7_INTERNAL | FEAT_SIX_FANS
@@ -617,10 +683,11 @@ static const struct it87_devices it87_devices[] = {
                .num_temp_limit = 6,
                .num_temp_offset = 6,
                .num_temp_map = 6,
+               .smbus_bitmap = BIT(1) | BIT(2),
        },
        [it8628] = {
                .name = "it8628",
-               .suffix = "E",
+               .model = "IT8628E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_TEMP_PECI | FEAT_SIX_FANS
                  | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
@@ -633,28 +700,31 @@ static const struct it87_devices it87_devices[] = {
        },
        [it8655] = {
                .name = "it8655",
-               .suffix = "E",
+               .model = "IT8655E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
                  | FEAT_AVCC3 | FEAT_NEW_TEMPMAP | FEAT_SCALING
-                 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_BANK_SEL,
+                 | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_BANK_SEL
+                 | FEAT_SIX_TEMP | FEAT_MMIO,
                .num_temp_limit = 6,
                .num_temp_offset = 6,
                .num_temp_map = 6,
+               .smbus_bitmap = BIT(2),
        },
        [it8665] = {
                .name = "it8665",
-               .suffix = "E",
+               .model = "IT8665E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
                  | FEAT_AVCC3 | FEAT_NEW_TEMPMAP | FEAT_SCALING
                  | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL | FEAT_SIX_FANS
-                 | FEAT_SIX_PWM | FEAT_BANK_SEL,
+                 | FEAT_SIX_PWM | FEAT_BANK_SEL | FEAT_MMIO | FEAT_SIX_TEMP,
                .num_temp_limit = 6,
                .num_temp_offset = 6,
                .num_temp_map = 6,
+               .smbus_bitmap = BIT(2),
        },
        [it8686] = {
                .name = "it8686",
-               .suffix = "E",
+               .model = "IT8686E",
                .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
                  | FEAT_SIX_FANS | FEAT_NEW_TEMPMAP
                  | FEAT_IN7_INTERNAL | FEAT_SIX_PWM | FEAT_PWM_FREQ2
@@ -662,6 +732,7 @@ static const struct it87_devices it87_devices[] = {
                .num_temp_limit = 6,
                .num_temp_offset = 6,
                .num_temp_map = 7,
+               .smbus_bitmap = BIT(1) | BIT(2),
        },
 };
 
@@ -699,9 +770,13 @@ static const struct it87_devices it87_devices[] = {
 #define has_fanctl_onoff(data) ((data)->features & FEAT_FANCTL_ONOFF)
 #define has_11mv_adc(data)     ((data)->features & FEAT_11MV_ADC)
 #define has_new_tempmap(data)  ((data)->features & FEAT_NEW_TEMPMAP)
+#define has_mmio(data)         ((data)->features & FEAT_MMIO)
+#define has_four_temp(data)    ((data)->features & FEAT_FOUR_TEMP)
 
 struct it87_sio_data {
        enum chips type;
+       u8 sioaddr;
+       u8 doexit;
        /* Values read from Super-I/O config space */
        u8 revision;
        u8 vid_value;
@@ -713,6 +788,8 @@ struct it87_sio_data {
        u8 skip_fan;
        u8 skip_pwm;
        u8 skip_temp;
+       u8 smbus_bitmap;
+       u8 ec_special_config;
 };
 
 /*
@@ -723,10 +800,19 @@ struct it87_data {
        const struct attribute_group *groups[7];
        enum chips type;
        u32 features;
-       u8 bank;
        u8 peci_mask;
        u8 old_peci_mask;
 
+       u8 smbus_bitmap;        /* !=0 if SMBus needs to be disabled */
+       u8 saved_bank;          /* saved bank register value */
+       u8 ec_special_config;   /* EC special config register restore value */
+       u8 sioaddr;             /* SIO port address */
+       bool doexit;            /* true if exit from sio config is ok */
+
+       void __iomem *mmio;     /* Remapped MMIO address if available */
+       int (*read)(struct it87_data *, u16);
+       void (*write)(struct it87_data *, u16, u8);
+
        const u8 *REG_FAN;
        const u8 *REG_FANX;
        const u8 *REG_FAN_MIN;
@@ -739,7 +825,6 @@ struct it87_data {
        const u8 *REG_TEMP_HIGH;
 
        unsigned short addr;
-       const char *name;
        struct mutex update_lock;
        char valid;             /* !=0 if following fields are valid */
        unsigned long last_updated;     /* In jiffies */
@@ -754,6 +839,7 @@ struct it87_data {
        s8 temp[NUM_TEMP][4];   /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */
        u8 num_temp_limit;      /* Number of temperature limit registers */
        u8 num_temp_offset;     /* Number of temperature offset registers */
+       u8 temp_src[4];         /* Up to 4 temperature source registers */
        u8 sensor;              /* Register value (IT87_REG_TEMP_ENABLE) */
        u8 extra;               /* Register value (IT87_REG_TEMP_EXTRA) */
        u8 fan_div[NUM_FAN_DIV];/* Register encoding, shifted right */
@@ -873,7 +959,7 @@ static u8 temp_map_from_reg(const struct it87_data *data, u8 reg)
 {
        u8 map;
 
-       map  = (reg >> data->pwm_temp_map_shift) & data->pwm_temp_map_mask;
+       map = (reg >> data->pwm_temp_map_shift) & data->pwm_temp_map_mask;
        if (map >= data->pwm_num_temp_map)      /* map is 0-based */
                map = 0;
 
@@ -909,62 +995,124 @@ static const unsigned int pwm_freq[8] = {
        750000,
 };
 
-static int _it87_read_value(struct it87_data *data, u8 reg)
+static int _it87_io_read(struct it87_data *data, u16 reg)
 {
        outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
        return inb_p(data->addr + IT87_DATA_REG_OFFSET);
 }
 
-static void _it87_write_value(struct it87_data *data, u8 reg, u8 value)
+static void _it87_io_write(struct it87_data *data, u16 reg, u8 value)
 {
        outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET);
        outb_p(value, data->addr + IT87_DATA_REG_OFFSET);
 }
 
-static void it87_set_bank(struct it87_data *data, u8 bank)
+static int smbus_disable(struct it87_data *data)
+{
+       int err;
+
+       if (data->smbus_bitmap) {
+               err = superio_enter(data->sioaddr);
+               if (err)
+                       return err;
+               superio_select(data->sioaddr, PME);
+               superio_outb(data->sioaddr, IT87_SPECIAL_CFG_REG,
+                            data->ec_special_config & ~data->smbus_bitmap);
+               superio_exit(data->sioaddr, data->doexit);
+               if (has_bank_sel(data) && !data->mmio)
+                       data->saved_bank = _it87_io_read(data, IT87_REG_BANK);
+       }
+       return 0;
+}
+
+static int smbus_enable(struct it87_data *data)
 {
-       if (has_bank_sel(data) && bank != data->bank) {
-               u8 breg = _it87_read_value(data, IT87_REG_BANK);
+       int err;
 
-               breg &= 0x1f;
-               breg |= (bank << 5);
-               data->bank = bank;
-               _it87_write_value(data, IT87_REG_BANK, breg);
+       if (data->smbus_bitmap) {
+               if (has_bank_sel(data) && !data->mmio)
+                       _it87_io_write(data, IT87_REG_BANK, data->saved_bank);
+               err = superio_enter(data->sioaddr);
+               if (err)
+                       return err;
+
+               superio_select(data->sioaddr, PME);
+               superio_outb(data->sioaddr, IT87_SPECIAL_CFG_REG,
+                            data->ec_special_config);
+               superio_exit(data->sioaddr, data->doexit);
        }
+       return 0;
+}
+
+static u8 it87_io_set_bank(struct it87_data *data, u8 bank)
+{
+       u8 _bank = bank;
+
+       if (has_bank_sel(data)) {
+               u8 breg = _it87_io_read(data, IT87_REG_BANK);
+
+               _bank = breg >> 5;
+               if (bank != _bank) {
+                       breg &= 0x1f;
+                       breg |= (bank << 5);
+                       _it87_io_write(data, IT87_REG_BANK, breg);
+               }
+       }
+       return _bank;
 }
 
 /*
  * Must be called with data->update_lock held, except during initialization.
+ * Must be called with SMBus accesses disabled.
  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
  * would slow down the IT87 access and should not be necessary.
  */
-static int it87_read_value(struct it87_data *data, u16 reg)
+static int it87_io_read(struct it87_data *data, u16 reg)
 {
-       it87_set_bank(data, reg >> 8);
-       return _it87_read_value(data, reg & 0xff);
+       u8 bank;
+       int val;
+
+       bank = it87_io_set_bank(data, reg >> 8);
+       val = _it87_io_read(data, reg & 0xff);
+       it87_io_set_bank(data, bank);
+
+       return val;
 }
 
 /*
  * Must be called with data->update_lock held, except during initialization.
+ * Must be called with SMBus accesses disabled
  * We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks,
  * would slow down the IT87 access and should not be necessary.
  */
-static void it87_write_value(struct it87_data *data, u16 reg, u8 value)
+static void it87_io_write(struct it87_data *data, u16 reg, u8 value)
+{
+       u8 bank;
+
+       bank = it87_io_set_bank(data, reg >> 8);
+       _it87_io_write(data, reg & 0xff, value);
+       it87_io_set_bank(data, bank);
+}
+
+static int it87_mmio_read(struct it87_data *data, u16 reg)
 {
-       it87_set_bank(data, reg >> 8);
-       _it87_write_value(data, reg & 0xff, value);
+       return readb(data->mmio + reg);
+}
+
+static void it87_mmio_write(struct it87_data *data, u16 reg, u8 value)
+{
+       writeb(value, data->mmio + reg);
 }
 
 static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
 {
        u8 ctrl;
 
-       ctrl = it87_read_value(data, data->REG_PWM[nr]);
+       ctrl = data->read(data, data->REG_PWM[nr]);
        data->pwm_ctrl[nr] = ctrl;
        if (has_newer_autopwm(data)) {
                data->pwm_temp_map[nr] = temp_map_from_reg(data, ctrl);
-               data->pwm_duty[nr] = it87_read_value(data,
-                                                    IT87_REG_PWM_DUTY[nr]);
+               data->pwm_duty[nr] = data->read(data, IT87_REG_PWM_DUTY[nr]);
        } else {
                if (ctrl & 0x80)        /* Automatic mode */
                        data->pwm_temp_map[nr] = temp_map_from_reg(data, ctrl);
@@ -976,10 +1124,10 @@ static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
                int i;
 
                for (i = 0; i < 5 ; i++)
-                       data->auto_temp[nr][i] = it87_read_value(data,
+                       data->auto_temp[nr][i] = data->read(data,
                                                IT87_REG_AUTO_TEMP(nr, i));
                for (i = 0; i < 3 ; i++)
-                       data->auto_pwm[nr][i] = it87_read_value(data,
+                       data->auto_pwm[nr][i] = data->read(data,
                                                IT87_REG_AUTO_PWM(nr, i));
        } else if (has_newer_autopwm(data)) {
                int i;
@@ -991,55 +1139,75 @@ static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
                 * 3: fan max temperature (base + 2)
                 */
                data->auto_temp[nr][0] =
-                       it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 5));
+                       data->read(data, IT87_REG_AUTO_TEMP(nr, 5));
 
                for (i = 0; i < 3 ; i++)
                        data->auto_temp[nr][i + 1] =
-                               it87_read_value(data,
-                                               IT87_REG_AUTO_TEMP(nr, i));
+                               data->read(data, IT87_REG_AUTO_TEMP(nr, i));
                /*
                 * 0: start pwm value (base + 3)
                 * 1: pwm slope (base + 4, 1/8th pwm)
                 */
                data->auto_pwm[nr][0] =
-                       it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 3));
+                       data->read(data, IT87_REG_AUTO_TEMP(nr, 3));
                data->auto_pwm[nr][1] =
-                       it87_read_value(data, IT87_REG_AUTO_TEMP(nr, 4));
+                       data->read(data, IT87_REG_AUTO_TEMP(nr, 4));
        }
 }
 
+static int it87_lock(struct it87_data *data)
+{
+       int err;
+
+       mutex_lock(&data->update_lock);
+       err = smbus_disable(data);
+       if (err)
+               mutex_unlock(&data->update_lock);
+       return err;
+}
+
+static void it87_unlock(struct it87_data *data)
+{
+       smbus_enable(data);
+       mutex_unlock(&data->update_lock);
+}
+
 static struct it87_data *it87_update_device(struct device *dev)
 {
        struct it87_data *data = dev_get_drvdata(dev);
+       struct it87_data *ret = data;
+       int err;
        int i;
 
        mutex_lock(&data->update_lock);
 
        if (time_after(jiffies, data->last_updated + HZ + HZ / 2) ||
            !data->valid) {
+               err = smbus_disable(data);
+               if (err) {
+                       ret = ERR_PTR(err);
+                       goto unlock;
+               }
                if (update_vbat) {
                        /*
                         * Cleared after each update, so reenable.  Value
                         * returned by this read will be previous value
                         */
-                       it87_write_value(data, IT87_REG_CONFIG,
-                               it87_read_value(data, IT87_REG_CONFIG) | 0x40);
+                       data->write(data, IT87_REG_CONFIG,
+                                   data->read(data, IT87_REG_CONFIG) | 0x40);
                }
                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]);
+                       data->in[i][0] = data->read(data, IT87_REG_VIN[i]);
 
                        /* VBAT and AVCC don't have limit registers */
                        if (i >= NUM_VIN_LIMIT)
                                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));
+                       data->in[i][1] = data->read(data, IT87_REG_VIN_MIN(i));
+                       data->in[i][2] = data->read(data, IT87_REG_VIN_MAX(i));
                }
 
                for (i = 0; i < NUM_FAN; i++) {
@@ -1047,15 +1215,14 @@ static struct it87_data *it87_update_device(struct device *dev)
                        if (!(data->has_fan & BIT(i)))
                                continue;
 
-                       data->fan[i][1] =
-                               it87_read_value(data, data->REG_FAN_MIN[i]);
-                       data->fan[i][0] = it87_read_value(data,
-                                      data->REG_FAN[i]);
+                       data->fan[i][1] = data->read(data,
+                                                    data->REG_FAN_MIN[i]);
+                       data->fan[i][0] = data->read(data, data->REG_FAN[i]);
                        /* Add high byte if in 16-bit mode */
                        if (has_16bit_fans(data)) {
-                               data->fan[i][0] |= it87_read_value(data,
+                               data->fan[i][0] |= data->read(data,
                                                data->REG_FANX[i]) << 8;
-                               data->fan[i][1] |= it87_read_value(data,
+                               data->fan[i][1] |= data->read(data,
                                                data->REG_FANX_MIN[i]) << 8;
                        }
                }
@@ -1063,54 +1230,52 @@ static struct it87_data *it87_update_device(struct device *dev)
                        if (!(data->has_temp & BIT(i)))
                                continue;
                        data->temp[i][0] =
-                               it87_read_value(data, IT87_REG_TEMP(i));
+                               data->read(data, IT87_REG_TEMP(i));
 
                        if (i >= data->num_temp_limit)
                                continue;
 
                        if (i < data->num_temp_offset)
                                data->temp[i][3] =
-                                 it87_read_value(data,
-                                                 data->REG_TEMP_OFFSET[i]);
+                                 data->read(data, data->REG_TEMP_OFFSET[i]);
 
                        data->temp[i][1] =
-                               it87_read_value(data, data->REG_TEMP_LOW[i]);
+                               data->read(data, data->REG_TEMP_LOW[i]);
                        data->temp[i][2] =
-                               it87_read_value(data, data->REG_TEMP_HIGH[i]);
+                               data->read(data, data->REG_TEMP_HIGH[i]);
                }
 
                /* Newer chips don't have clock dividers */
                if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
-                       i = it87_read_value(data, IT87_REG_FAN_DIV);
+                       i = data->read(data, IT87_REG_FAN_DIV);
                        data->fan_div[0] = i & 0x07;
                        data->fan_div[1] = (i >> 3) & 0x07;
                        data->fan_div[2] = (i & 0x40) ? 3 : 1;
                }
 
                data->alarms =
-                       it87_read_value(data, IT87_REG_ALARM1) |
-                       (it87_read_value(data, IT87_REG_ALARM2) << 8) |
-                       (it87_read_value(data, IT87_REG_ALARM3) << 16);
-               data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE);
-
-               data->fan_main_ctrl = it87_read_value(data,
-                               IT87_REG_FAN_MAIN_CTRL);
-               data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
+                       data->read(data, IT87_REG_ALARM1) |
+                       (data->read(data, IT87_REG_ALARM2) << 8) |
+                       (data->read(data, IT87_REG_ALARM3) << 16);
+               data->beeps = data->read(data, IT87_REG_BEEP_ENABLE);
+
+               data->fan_main_ctrl = data->read(data, IT87_REG_FAN_MAIN_CTRL);
+               data->fan_ctl = data->read(data, IT87_REG_FAN_CTL);
                for (i = 0; i < NUM_PWM; i++) {
                        if (!(data->has_pwm & BIT(i)))
                                continue;
                        it87_update_pwm_ctrl(data, i);
                }
 
-               data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
-               data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
+               data->sensor = data->read(data, IT87_REG_TEMP_ENABLE);
+               data->extra = data->read(data, IT87_REG_TEMP_EXTRA);
                /*
                 * The IT8705F does not have VID capability.
                 * The IT8718F and later don't use IT87_REG_VID for the
                 * same purpose.
                 */
                if (data->type == it8712 || data->type == it8716) {
-                       data->vid = it87_read_value(data, IT87_REG_VID);
+                       data->vid = data->read(data, IT87_REG_VID);
                        /*
                         * The older IT8712F revisions had only 5 VID pins,
                         * but we assume it is always safe to read 6 bits.
@@ -1119,11 +1284,11 @@ static struct it87_data *it87_update_device(struct device *dev)
                }
                data->last_updated = jiffies;
                data->valid = 1;
+               smbus_enable(data);
        }
-
+unlock:
        mutex_unlock(&data->update_lock);
-
-       return data;
+       return ret;
 }
 
 static ssize_t show_in(struct device *dev, struct device_attribute *attr,
@@ -1134,6 +1299,9 @@ static ssize_t show_in(struct device *dev, struct device_attribute *attr,
        int index = sattr->index;
        int nr = sattr->nr;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index]));
 }
 
@@ -1145,73 +1313,60 @@ static ssize_t set_in(struct device *dev, struct device_attribute *attr,
        int index = sattr->index;
        int nr = sattr->nr;
        unsigned long val;
+       int err;
 
        if (kstrtoul(buf, 10, &val) < 0)
                return -EINVAL;
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
        data->in[nr][index] = in_to_reg(data, nr, val);
-       it87_write_value(data,
-                        index == 1 ? IT87_REG_VIN_MIN(nr)
-                                   : IT87_REG_VIN_MAX(nr),
-                        data->in[nr][index]);
-       mutex_unlock(&data->update_lock);
+       data->write(data, index == 1 ? IT87_REG_VIN_MIN(nr)
+                                    : IT87_REG_VIN_MAX(nr),
+                   data->in[nr][index]);
+       it87_unlock(data);
        return count;
 }
 
-static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0);
-static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
-                           0, 1);
-static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
-                           0, 2);
-
-static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0);
-static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
-                           1, 1);
-static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
-                           1, 2);
-
-static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0);
-static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
-                           2, 1);
-static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
-                           2, 2);
-
-static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0);
-static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
-                           3, 1);
-static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
-                           3, 2);
-
-static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0);
-static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
-                           4, 1);
-static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
-                           4, 2);
-
-static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0);
-static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
-                           5, 1);
-static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
-                           5, 2);
-
-static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0);
-static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in,
-                           6, 1);
-static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in,
-                           6, 2);
-
-static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0);
-static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in,
-                           7, 1);
-static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in,
-                           7, 2);
-
-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);
+static SENSOR_DEVICE_ATTR_2(in0_input, 0444, show_in, NULL, 0, 0);
+static SENSOR_DEVICE_ATTR_2(in0_min, 0644, show_in, set_in, 0, 1);
+static SENSOR_DEVICE_ATTR_2(in0_max, 0644, show_in, set_in, 0, 2);
+
+static SENSOR_DEVICE_ATTR_2(in1_input, 0444, show_in, NULL, 1, 0);
+static SENSOR_DEVICE_ATTR_2(in1_min, 0644, show_in, set_in, 1, 1);
+static SENSOR_DEVICE_ATTR_2(in1_max, 0644, show_in, set_in, 1, 2);
+
+static SENSOR_DEVICE_ATTR_2(in2_input, 0444, show_in, NULL, 2, 0);
+static SENSOR_DEVICE_ATTR_2(in2_min, 0644, show_in, set_in, 2, 1);
+static SENSOR_DEVICE_ATTR_2(in2_max, 0644, show_in, set_in, 2, 2);
+
+static SENSOR_DEVICE_ATTR_2(in3_input, 0444, show_in, NULL, 3, 0);
+static SENSOR_DEVICE_ATTR_2(in3_min, 0644, show_in, set_in, 3, 1);
+static SENSOR_DEVICE_ATTR_2(in3_max, 0644, show_in, set_in, 3, 2);
+
+static SENSOR_DEVICE_ATTR_2(in4_input, 0444, show_in, NULL, 4, 0);
+static SENSOR_DEVICE_ATTR_2(in4_min, 0644, show_in, set_in, 4, 1);
+static SENSOR_DEVICE_ATTR_2(in4_max, 0644, show_in, set_in, 4, 2);
+
+static SENSOR_DEVICE_ATTR_2(in5_input, 0444, show_in, NULL, 5, 0);
+static SENSOR_DEVICE_ATTR_2(in5_min, 0644, show_in, set_in, 5, 1);
+static SENSOR_DEVICE_ATTR_2(in5_max, 0644, show_in, set_in, 5, 2);
+
+static SENSOR_DEVICE_ATTR_2(in6_input, 0444, show_in, NULL, 6, 0);
+static SENSOR_DEVICE_ATTR_2(in6_min, 0644, show_in, set_in, 6, 1);
+static SENSOR_DEVICE_ATTR_2(in6_max, 0644, show_in, set_in, 6, 2);
+
+static SENSOR_DEVICE_ATTR_2(in7_input, 0444, show_in, NULL, 7, 0);
+static SENSOR_DEVICE_ATTR_2(in7_min, 0644, show_in, set_in, 7, 1);
+static SENSOR_DEVICE_ATTR_2(in7_max, 0644, show_in, set_in, 7, 2);
+
+static SENSOR_DEVICE_ATTR_2(in8_input, 0444, show_in, NULL, 8, 0);
+static SENSOR_DEVICE_ATTR_2(in9_input, 0444, show_in, NULL, 9, 0);
+static SENSOR_DEVICE_ATTR_2(in10_input, 0444, show_in, NULL, 10, 0);
+static SENSOR_DEVICE_ATTR_2(in11_input, 0444, show_in, NULL, 11, 0);
+static SENSOR_DEVICE_ATTR_2(in12_input, 0444, show_in, NULL, 12, 0);
 
 /* Up to 6 temperatures */
 static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
@@ -1222,6 +1377,9 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
        int index = sattr->index;
        struct it87_data *data = it87_update_device(dev);
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
 }
 
@@ -1234,11 +1392,14 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = dev_get_drvdata(dev);
        long val;
        u8 reg, regval;
+       int err;
 
        if (kstrtol(buf, 10, &val) < 0)
                return -EINVAL;
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
 
        switch (index) {
        default:
@@ -1249,10 +1410,10 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
                reg = data->REG_TEMP_HIGH[nr];
                break;
        case 3:
-               regval = it87_read_value(data, IT87_REG_BEEP_ENABLE);
+               regval = data->read(data, IT87_REG_BEEP_ENABLE);
                if (!(regval & 0x80)) {
                        regval |= 0x80;
-                       it87_write_value(data, IT87_REG_BEEP_ENABLE, regval);
+                       data->write(data, IT87_REG_BEEP_ENABLE, regval);
                }
                data->valid = 0;
                reg = data->REG_TEMP_OFFSET[nr];
@@ -1260,53 +1421,35 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
        }
 
        data->temp[nr][index] = TEMP_TO_REG(val);
-       it87_write_value(data, reg, data->temp[nr][index]);
-       mutex_unlock(&data->update_lock);
+       data->write(data, reg, data->temp[nr][index]);
+       it87_unlock(data);
        return count;
 }
 
-static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0);
-static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           0, 1);
-static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           0, 2);
-static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp,
-                           set_temp, 0, 3);
-static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0);
-static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           1, 1);
-static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           1, 2);
-static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp,
-                           set_temp, 1, 3);
-static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0);
-static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           2, 1);
-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(temp4_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           3, 1);
-static SENSOR_DEVICE_ATTR_2(temp4_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           3, 2);
-static SENSOR_DEVICE_ATTR_2(temp4_offset, S_IRUGO | S_IWUSR, show_temp,
-                           set_temp, 3, 3);
-static SENSOR_DEVICE_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, 0);
-static SENSOR_DEVICE_ATTR_2(temp5_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           4, 1);
-static SENSOR_DEVICE_ATTR_2(temp5_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           4, 2);
-static SENSOR_DEVICE_ATTR_2(temp5_offset, S_IRUGO | S_IWUSR, show_temp,
-                           set_temp, 4, 3);
-static SENSOR_DEVICE_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, 0);
-static SENSOR_DEVICE_ATTR_2(temp6_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           5, 1);
-static SENSOR_DEVICE_ATTR_2(temp6_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
-                           5, 2);
-static SENSOR_DEVICE_ATTR_2(temp6_offset, S_IRUGO | S_IWUSR, show_temp,
-                           set_temp, 5, 3);
+static SENSOR_DEVICE_ATTR_2(temp1_input, 0444, show_temp, NULL, 0, 0);
+static SENSOR_DEVICE_ATTR_2(temp1_min, 0644, show_temp, set_temp, 0, 1);
+static SENSOR_DEVICE_ATTR_2(temp1_max, 0644, show_temp, set_temp, 0, 2);
+static SENSOR_DEVICE_ATTR_2(temp1_offset, 0644, show_temp, set_temp, 0, 3);
+static SENSOR_DEVICE_ATTR_2(temp2_input, 0444, show_temp, NULL, 1, 0);
+static SENSOR_DEVICE_ATTR_2(temp2_min, 0644, show_temp, set_temp, 1, 1);
+static SENSOR_DEVICE_ATTR_2(temp2_max, 0644, show_temp, set_temp, 1, 2);
+static SENSOR_DEVICE_ATTR_2(temp2_offset, 0644, show_temp, set_temp, 1, 3);
+static SENSOR_DEVICE_ATTR_2(temp3_input, 0444, show_temp, NULL, 2, 0);
+static SENSOR_DEVICE_ATTR_2(temp3_min, 0644, show_temp, set_temp, 2, 1);
+static SENSOR_DEVICE_ATTR_2(temp3_max, 0644, show_temp, set_temp, 2, 2);
+static SENSOR_DEVICE_ATTR_2(temp3_offset, 0644, show_temp, set_temp, 2, 3);
+static SENSOR_DEVICE_ATTR_2(temp4_input, 0444, show_temp, NULL, 3, 0);
+static SENSOR_DEVICE_ATTR_2(temp4_min, 0644, show_temp, set_temp, 3, 1);
+static SENSOR_DEVICE_ATTR_2(temp4_max, 0644, show_temp, set_temp, 3, 2);
+static SENSOR_DEVICE_ATTR_2(temp4_offset, 0644, show_temp, set_temp, 3, 3);
+static SENSOR_DEVICE_ATTR_2(temp5_input, 0444, show_temp, NULL, 4, 0);
+static SENSOR_DEVICE_ATTR_2(temp5_min, 0644, show_temp, set_temp, 4, 1);
+static SENSOR_DEVICE_ATTR_2(temp5_max, 0644, show_temp, set_temp, 4, 2);
+static SENSOR_DEVICE_ATTR_2(temp5_offset, 0644, show_temp, set_temp, 4, 3);
+static SENSOR_DEVICE_ATTR_2(temp6_input, 0444, show_temp, NULL, 5, 0);
+static SENSOR_DEVICE_ATTR_2(temp6_min, 0644, show_temp, set_temp, 5, 1);
+static SENSOR_DEVICE_ATTR_2(temp6_max, 0644, show_temp, set_temp, 5, 2);
+static SENSOR_DEVICE_ATTR_2(temp6_offset, 0644, show_temp, set_temp, 5, 3);
 
 static const u8 temp_types_8686[NUM_TEMP][9] = {
        { 0, 8, 8, 8, 8, 8, 8, 8, 7 },
@@ -1320,13 +1463,12 @@ static const u8 temp_types_8686[NUM_TEMP][9] = {
 static int get_temp_type(struct it87_data *data, int index)
 {
        u8 reg, extra;
-       int type = 0;
+       int ttype, type = 0;
 
        if (has_bank_sel(data)) {
-               int s1reg = IT87_REG_TEMP_SRC1[index/2] >> ((index % 2) * 4);
                u8 src1, src2;
 
-               src1 = (it87_read_value(data, s1reg) >> ((index % 2) * 4)) & 0x0f;
+               src1 = (data->temp_src[index / 2] >> ((index % 2) * 4)) & 0x0f;
 
                switch (data->type) {
                case it8686:
@@ -1342,8 +1484,8 @@ static int get_temp_type(struct it87_data *data, int index)
                                index = src1;
                                break;
                        }
-                       src2 = it87_read_value(data, IT87_REG_TEMP_SRC2);
-                       switch(src1) {
+                       src2 = data->temp_src[3];
+                       switch (src1) {
                        case 3:
                                type = (src2 & BIT(index)) ? 6 : 5;
                                break;
@@ -1361,16 +1503,39 @@ static int get_temp_type(struct it87_data *data, int index)
                        return 0;
                }
        }
+       if (type)
+               return type;
+
+       /* Dectect PECI vs. AMDTSI */
+       ttype = 6;
+       if ((has_temp_peci(data, index)) || data->type == it8721 ||
+           data->type == it8720) {
+               extra = data->read(data, IT87_REG_IFSEL);
+               if ((extra & 0x70) == 0x40)
+                       ttype = 5;
+       }
+
+       reg = data->read(data, IT87_REG_TEMP_ENABLE);
+
+       /* Per chip special detection */
+       switch (data->type) {
+       case it8622:
+               if (!(reg & 0xc0) && index == 3)
+                       type = ttype;
+               break;
+       default:
+               break;
+       }
+
        if (type || index >= 3)
                return type;
 
-       reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
-       extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
+       extra = data->read(data, IT87_REG_TEMP_EXTRA);
 
        if ((has_temp_peci(data, index) && (reg >> 6 == index + 1)) ||
            (has_temp_old_peci(data, index) && (extra & 0x80)))
-               type = 6;               /* Intel PECI */
-       if (reg & BIT(index))
+               type = ttype;           /* Intel PECI or AMDTSI */
+       else if (reg & BIT(index))
                type = 3;               /* thermal diode */
        else if (reg & BIT(index + 3))
                type = 4;               /* thermistor */
@@ -1383,8 +1548,12 @@ static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
 {
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
        struct it87_data *data = it87_update_device(dev);
-       int type = get_temp_type(data, sensor_attr->index);
+       int type;
+
+       if (IS_ERR(data))
+               return PTR_ERR(data);
 
+       type = get_temp_type(data, sensor_attr->index);
        return sprintf(buf, "%d\n", type);
 }
 
@@ -1397,16 +1566,21 @@ static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = dev_get_drvdata(dev);
        long val;
        u8 reg, extra;
+       int err;
 
        if (kstrtol(buf, 10, &val) < 0)
                return -EINVAL;
 
-       reg = it87_read_value(data, IT87_REG_TEMP_ENABLE);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
+       reg = data->read(data, IT87_REG_TEMP_ENABLE);
        reg &= ~(1 << nr);
        reg &= ~(8 << nr);
        if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6))
                reg &= 0x3f;
-       extra = it87_read_value(data, IT87_REG_TEMP_EXTRA);
+       extra = data->read(data, IT87_REG_TEMP_EXTRA);
        if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6))
                extra &= 0x7f;
        if (val == 2) { /* backwards compatibility */
@@ -1423,32 +1597,28 @@ static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr,
                reg |= (nr + 1) << 6;
        else if (has_temp_old_peci(data, nr) && val == 6)
                extra |= 0x80;
-       else if (val != 0)
-               return -EINVAL;
+       else if (val != 0) {
+               count = -EINVAL;
+               goto unlock;
+       }
 
-       mutex_lock(&data->update_lock);
        data->sensor = reg;
        data->extra = extra;
-       it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor);
+       data->write(data, IT87_REG_TEMP_ENABLE, data->sensor);
        if (has_temp_old_peci(data, nr))
-               it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
+               data->write(data, IT87_REG_TEMP_EXTRA, data->extra);
        data->valid = 0;        /* Force cache refresh */
-       mutex_unlock(&data->update_lock);
+unlock:
+       it87_unlock(data);
        return count;
 }
 
-static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type,
-                         set_temp_type, 0);
-static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type,
-                         set_temp_type, 1);
-static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type,
-                         set_temp_type, 2);
-static SENSOR_DEVICE_ATTR(temp4_type, S_IRUGO | S_IWUSR, show_temp_type,
-                         set_temp_type, 3);
-static SENSOR_DEVICE_ATTR(temp5_type, S_IRUGO | S_IWUSR, show_temp_type,
-                         set_temp_type, 4);
-static SENSOR_DEVICE_ATTR(temp6_type, S_IRUGO | S_IWUSR, show_temp_type,
-                         set_temp_type, 5);
+static SENSOR_DEVICE_ATTR(temp1_type, 0644, show_temp_type, set_temp_type, 0);
+static SENSOR_DEVICE_ATTR(temp2_type, 0644, show_temp_type, set_temp_type, 1);
+static SENSOR_DEVICE_ATTR(temp3_type, 0644, show_temp_type, set_temp_type, 2);
+static SENSOR_DEVICE_ATTR(temp4_type, 0644, show_temp_type, set_temp_type, 3);
+static SENSOR_DEVICE_ATTR(temp5_type, 0644, show_temp_type, set_temp_type, 4);
+static SENSOR_DEVICE_ATTR(temp6_type, 0644, show_temp_type, set_temp_type, 5);
 
 /* 6 Fans */
 
@@ -1475,6 +1645,9 @@ static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
        int speed;
        struct it87_data *data = it87_update_device(dev);
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        speed = has_16bit_fans(data) ?
                FAN16_FROM_REG(data->fan[nr][index]) :
                FAN_FROM_REG(data->fan[nr][index],
@@ -1489,6 +1662,9 @@ static ssize_t show_fan_div(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = it87_update_device(dev);
        int nr = sensor_attr->index;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%lu\n", DIV_FROM_REG(data->fan_div[nr]));
 }
 
@@ -1499,6 +1675,9 @@ static ssize_t show_pwm_enable(struct device *dev,
        struct it87_data *data = it87_update_device(dev);
        int nr = sensor_attr->index;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%d\n", pwm_mode(data, nr));
 }
 
@@ -1509,6 +1688,9 @@ static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = it87_update_device(dev);
        int nr = sensor_attr->index;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%d\n",
                       pwm_from_reg(data, data->pwm_duty[nr]));
 }
@@ -1522,6 +1704,9 @@ static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
        unsigned int freq;
        int index;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        if (has_pwm_freq2(data) && nr == 1)
                index = (data->extra >> 4) & 0x07;
        else
@@ -1541,21 +1726,24 @@ static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
 
        struct it87_data *data = dev_get_drvdata(dev);
        long val;
+       int err;
        u8 reg;
 
        if (kstrtol(buf, 10, &val) < 0)
                return -EINVAL;
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
 
        if (has_16bit_fans(data)) {
                data->fan[nr][index] = FAN16_TO_REG(val);
-               it87_write_value(data, data->REG_FAN_MIN[nr],
-                                data->fan[nr][index] & 0xff);
-               it87_write_value(data, data->REG_FANX_MIN[nr],
-                                data->fan[nr][index] >> 8);
+               data->write(data, data->REG_FAN_MIN[nr],
+                           data->fan[nr][index] & 0xff);
+               data->write(data, data->REG_FANX_MIN[nr],
+                           data->fan[nr][index] >> 8);
        } else {
-               reg = it87_read_value(data, IT87_REG_FAN_DIV);
+               reg = data->read(data, IT87_REG_FAN_DIV);
                switch (nr) {
                case 0:
                        data->fan_div[nr] = reg & 0x07;
@@ -1569,11 +1757,9 @@ static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
                }
                data->fan[nr][index] =
                  FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
-               it87_write_value(data, data->REG_FAN_MIN[nr],
-                                data->fan[nr][index]);
+               data->write(data, data->REG_FAN_MIN[nr], data->fan[nr][index]);
        }
-
-       mutex_unlock(&data->update_lock);
+       it87_unlock(data);
        return count;
 }
 
@@ -1584,14 +1770,17 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = dev_get_drvdata(dev);
        int nr = sensor_attr->index;
        unsigned long val;
-       int min;
+       int min, err;
        u8 old;
 
        if (kstrtoul(buf, 10, &val) < 0)
                return -EINVAL;
 
-       mutex_lock(&data->update_lock);
-       old = it87_read_value(data, IT87_REG_FAN_DIV);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
+       old = data->read(data, IT87_REG_FAN_DIV);
 
        /* Save fan min limit */
        min = FAN_FROM_REG(data->fan[nr][1], DIV_FROM_REG(data->fan_div[nr]));
@@ -1612,13 +1801,12 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
        val |= (data->fan_div[1] & 0x07) << 3;
        if (data->fan_div[2] == 3)
                val |= 0x1 << 6;
-       it87_write_value(data, IT87_REG_FAN_DIV, val);
+       data->write(data, IT87_REG_FAN_DIV, val);
 
        /* Restore fan min limit */
        data->fan[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
-       it87_write_value(data, data->REG_FAN_MIN[nr], data->fan[nr][1]);
-
-       mutex_unlock(&data->update_lock);
+       data->write(data, data->REG_FAN_MIN[nr], data->fan[nr][1]);
+       it87_unlock(data);
        return count;
 }
 
@@ -1659,6 +1847,7 @@ static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = dev_get_drvdata(dev);
        int nr = sensor_attr->index;
        long val;
+       int err;
 
        if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 2)
                return -EINVAL;
@@ -1669,26 +1858,29 @@ static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
                        return -EINVAL;
        }
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
        it87_update_pwm_ctrl(data, nr);
 
        if (val == 0) {
                if (nr < 3 && has_fanctl_onoff(data)) {
                        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 | BIT(nr));
+                       tmp = data->read(data, IT87_REG_FAN_CTL);
+                       data->write(data, IT87_REG_FAN_CTL, tmp | BIT(nr));
                        /* set on/off mode */
                        data->fan_main_ctrl &= ~BIT(nr);
-                       it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
-                                        data->fan_main_ctrl);
+                       data->write(data, IT87_REG_FAN_MAIN_CTRL,
+                                   data->fan_main_ctrl);
                } else {
                        u8 ctrl;
 
                        /* No on/off mode, set maximum pwm value */
                        data->pwm_duty[nr] = pwm_to_reg(data, 0xff);
-                       it87_write_value(data, IT87_REG_PWM_DUTY[nr],
-                                        data->pwm_duty[nr]);
+                       data->write(data, IT87_REG_PWM_DUTY[nr],
+                                   data->pwm_duty[nr]);
                        /* and set manual mode */
                        if (has_newer_autopwm(data)) {
                                ctrl = temp_map_to_reg(data, nr,
@@ -1698,7 +1890,7 @@ static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
                                ctrl = data->pwm_duty[nr];
                        }
                        data->pwm_ctrl[nr] = ctrl;
-                       it87_write_value(data, data->REG_PWM[nr], ctrl);
+                       data->write(data, data->REG_PWM[nr], ctrl);
                }
        } else {
                u8 ctrl;
@@ -1714,17 +1906,16 @@ static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
                        ctrl = (val == 1 ? data->pwm_duty[nr] : 0x80);
                }
                data->pwm_ctrl[nr] = ctrl;
-               it87_write_value(data, data->REG_PWM[nr], ctrl);
+               data->write(data, data->REG_PWM[nr], ctrl);
 
                if (has_fanctl_onoff(data) && nr < 3) {
                        /* set SmartGuardian mode */
                        data->fan_main_ctrl |= BIT(nr);
-                       it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
-                                        data->fan_main_ctrl);
+                       data->write(data, IT87_REG_FAN_MAIN_CTRL,
+                                   data->fan_main_ctrl);
                }
        }
-
-       mutex_unlock(&data->update_lock);
+       it87_unlock(data);
        return count;
 }
 
@@ -1735,11 +1926,15 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = dev_get_drvdata(dev);
        int nr = sensor_attr->index;
        long val;
+       int err;
 
        if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
                return -EINVAL;
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
        it87_update_pwm_ctrl(data, nr);
        if (has_newer_autopwm(data)) {
                /*
@@ -1747,12 +1942,12 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
                 * is read-only so we can't write the value.
                 */
                if (data->pwm_ctrl[nr] & 0x80) {
-                       mutex_unlock(&data->update_lock);
-                       return -EBUSY;
+                       count = -EBUSY;
+                       goto unlock;
                }
                data->pwm_duty[nr] = pwm_to_reg(data, val);
-               it87_write_value(data, IT87_REG_PWM_DUTY[nr],
-                                data->pwm_duty[nr]);
+               data->write(data, IT87_REG_PWM_DUTY[nr],
+                           data->pwm_duty[nr]);
        } else {
                data->pwm_duty[nr] = pwm_to_reg(data, val);
                /*
@@ -1761,11 +1956,12 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
                 */
                if (!(data->pwm_ctrl[nr] & 0x80)) {
                        data->pwm_ctrl[nr] = data->pwm_duty[nr];
-                       it87_write_value(data, data->REG_PWM[nr],
-                                        data->pwm_ctrl[nr]);
+                       data->write(data, data->REG_PWM[nr],
+                                   data->pwm_ctrl[nr]);
                }
        }
-       mutex_unlock(&data->update_lock);
+unlock:
+       it87_unlock(data);
        return count;
 }
 
@@ -1776,6 +1972,7 @@ static ssize_t set_pwm_freq(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = dev_get_drvdata(dev);
        int nr = sensor_attr->index;
        unsigned long val;
+       int err;
        int i;
 
        if (kstrtoul(buf, 10, &val) < 0)
@@ -1785,23 +1982,25 @@ static ssize_t set_pwm_freq(struct device *dev, struct device_attribute *attr,
        val *= has_newer_autopwm(data) ? 256 : 128;
 
        /* Search for the nearest available frequency */
-       for (i = 0; i < 7; i++) {
+       for (i = 0; i < ARRAY_SIZE(pwm_freq) - 1; i++) {
                if (val > (pwm_freq[i] + pwm_freq[i + 1]) / 2)
                        break;
        }
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
        if (nr == 0) {
-               data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f;
+               data->fan_ctl = data->read(data, IT87_REG_FAN_CTL) & 0x8f;
                data->fan_ctl |= i << 4;
-               it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl);
+               data->write(data, IT87_REG_FAN_CTL, data->fan_ctl);
        } else {
-               data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x8f;
+               data->extra = data->read(data, IT87_REG_TEMP_EXTRA) & 0x8f;
                data->extra |= i << 4;
-               it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra);
+               data->write(data, IT87_REG_TEMP_EXTRA, data->extra);
        }
-       mutex_unlock(&data->update_lock);
-
+       it87_unlock(data);
        return count;
 }
 
@@ -1812,6 +2011,9 @@ static ssize_t show_pwm_temp_map(struct device *dev,
        struct it87_data *data = it87_update_device(dev);
        int nr = sensor_attr->index;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%d\n", data->pwm_temp_map[nr] + 1);
 }
 
@@ -1823,6 +2025,7 @@ static ssize_t set_pwm_temp_map(struct device *dev,
        struct it87_data *data = dev_get_drvdata(dev);
        int nr = sensor_attr->index;
        unsigned long val;
+       int err;
        u8 map;
 
        if (kstrtoul(buf, 10, &val) < 0)
@@ -1833,7 +2036,10 @@ static ssize_t set_pwm_temp_map(struct device *dev,
 
        map = val - 1;
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
        it87_update_pwm_ctrl(data, nr);
        data->pwm_temp_map[nr] = map;
        /*
@@ -1842,9 +2048,9 @@ static ssize_t set_pwm_temp_map(struct device *dev,
         */
        if (data->pwm_ctrl[nr] & 0x80) {
                data->pwm_ctrl[nr] = temp_map_to_reg(data, nr, map);
-               it87_write_value(data, data->REG_PWM[nr], data->pwm_ctrl[nr]);
+               data->write(data, data->REG_PWM[nr], data->pwm_ctrl[nr]);
        }
-       mutex_unlock(&data->update_lock);
+       it87_unlock(data);
        return count;
 }
 
@@ -1857,6 +2063,9 @@ static ssize_t show_auto_pwm(struct device *dev, struct device_attribute *attr,
        int nr = sensor_attr->nr;
        int point = sensor_attr->index;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%d\n",
                       pwm_from_reg(data, data->auto_pwm[nr][point]));
 }
@@ -1871,18 +2080,22 @@ static ssize_t set_auto_pwm(struct device *dev, struct device_attribute *attr,
        int point = sensor_attr->index;
        int regaddr;
        long val;
+       int err;
 
        if (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255)
                return -EINVAL;
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
        data->auto_pwm[nr][point] = pwm_to_reg(data, val);
        if (has_newer_autopwm(data))
                regaddr = IT87_REG_AUTO_TEMP(nr, 3);
        else
                regaddr = IT87_REG_AUTO_PWM(nr, point);
-       it87_write_value(data, regaddr, data->auto_pwm[nr][point]);
-       mutex_unlock(&data->update_lock);
+       data->write(data, regaddr, data->auto_pwm[nr][point]);
+       it87_unlock(data);
        return count;
 }
 
@@ -1893,6 +2106,9 @@ static ssize_t show_auto_pwm_slope(struct device *dev,
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
        int nr = sensor_attr->index;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%d\n", data->auto_pwm[nr][1] & 0x7f);
 }
 
@@ -1904,15 +2120,18 @@ static ssize_t set_auto_pwm_slope(struct device *dev,
        struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
        int nr = sensor_attr->index;
        unsigned long val;
+       int err;
 
        if (kstrtoul(buf, 10, &val) < 0 || val > 127)
                return -EINVAL;
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
        data->auto_pwm[nr][1] = (data->auto_pwm[nr][1] & 0x80) | val;
-       it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 4),
-                        data->auto_pwm[nr][1]);
-       mutex_unlock(&data->update_lock);
+       data->write(data, IT87_REG_AUTO_TEMP(nr, 4), data->auto_pwm[nr][1]);
+       it87_unlock(data);
        return count;
 }
 
@@ -1926,6 +2145,9 @@ static ssize_t show_auto_temp(struct device *dev, struct device_attribute *attr,
        int point = sensor_attr->index;
        int reg;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        if (has_old_autopwm(data) || point)
                reg = data->auto_temp[nr][point];
        else
@@ -1944,200 +2166,194 @@ static ssize_t set_auto_temp(struct device *dev, struct device_attribute *attr,
        int point = sensor_attr->index;
        long val;
        int reg;
+       int err;
 
        if (kstrtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
                return -EINVAL;
 
-       mutex_lock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
        if (has_newer_autopwm(data) && !point) {
                reg = data->auto_temp[nr][1] - TEMP_TO_REG(val);
                reg = clamp_val(reg, 0, 0x1f) | (data->auto_temp[nr][0] & 0xe0);
                data->auto_temp[nr][0] = reg;
-               it87_write_value(data, IT87_REG_AUTO_TEMP(nr, 5), reg);
+               data->write(data, IT87_REG_AUTO_TEMP(nr, 5), reg);
        } else {
                reg = TEMP_TO_REG(val);
                data->auto_temp[nr][point] = reg;
                if (has_newer_autopwm(data))
                        point--;
-               it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), reg);
+               data->write(data, IT87_REG_AUTO_TEMP(nr, point), reg);
        }
-       mutex_unlock(&data->update_lock);
+       it87_unlock(data);
        return count;
 }
 
-static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0);
-static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
-                           0, 1);
-static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div,
-                         set_fan_div, 0);
+static SENSOR_DEVICE_ATTR_2(fan1_input, 0444, show_fan, NULL, 0, 0);
+static SENSOR_DEVICE_ATTR_2(fan1_min, 0644, show_fan, set_fan, 0, 1);
+static SENSOR_DEVICE_ATTR(fan1_div, 0644, show_fan_div, set_fan_div, 0);
 
-static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0);
-static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
-                           1, 1);
-static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div,
-                         set_fan_div, 1);
+static SENSOR_DEVICE_ATTR_2(fan2_input, 0444, show_fan, NULL, 1, 0);
+static SENSOR_DEVICE_ATTR_2(fan2_min, 0644, show_fan, set_fan, 1, 1);
+static SENSOR_DEVICE_ATTR(fan2_div, 0644, show_fan_div, set_fan_div, 1);
 
-static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0);
-static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
-                           2, 1);
-static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div,
-                         set_fan_div, 2);
+static SENSOR_DEVICE_ATTR_2(fan3_input, 0444, show_fan, NULL, 2, 0);
+static SENSOR_DEVICE_ATTR_2(fan3_min, 0644, show_fan, set_fan, 2, 1);
+static SENSOR_DEVICE_ATTR(fan3_div, 0644, show_fan_div, set_fan_div, 2);
 
-static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0);
-static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
-                           3, 1);
+static SENSOR_DEVICE_ATTR_2(fan4_input, 0444, show_fan, NULL, 3, 0);
+static SENSOR_DEVICE_ATTR_2(fan4_min, 0644, show_fan, set_fan, 3, 1);
 
-static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0);
-static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
-                           4, 1);
+static SENSOR_DEVICE_ATTR_2(fan5_input, 0444, show_fan, NULL, 4, 0);
+static SENSOR_DEVICE_ATTR_2(fan5_min, 0644, show_fan, set_fan, 4, 1);
 
-static SENSOR_DEVICE_ATTR_2(fan6_input, S_IRUGO, show_fan, NULL, 5, 0);
-static SENSOR_DEVICE_ATTR_2(fan6_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
-                           5, 1);
+static SENSOR_DEVICE_ATTR_2(fan6_input, 0444, show_fan, NULL, 5, 0);
+static SENSOR_DEVICE_ATTR_2(fan6_min, 0644, show_fan, set_fan, 5, 1);
 
-static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm1_enable, 0644,
                          show_pwm_enable, set_pwm_enable, 0);
-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,
+static SENSOR_DEVICE_ATTR(pwm1, 0644, show_pwm, set_pwm, 0);
+static SENSOR_DEVICE_ATTR(pwm1_freq, 0644, show_pwm_freq, set_pwm_freq, 0);
+static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, 0444,
                          show_pwm_temp_map, set_pwm_temp_map, 0);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, 0644,
                            show_auto_pwm, set_auto_pwm, 0, 0);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, 0644,
                            show_auto_pwm, set_auto_pwm, 0, 1);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, 0644,
                            show_auto_pwm, set_auto_pwm, 0, 2);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, 0444,
                            show_auto_pwm, NULL, 0, 3);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, 0644,
                            show_auto_temp, set_auto_temp, 0, 1);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, 0644,
                            show_auto_temp, set_auto_temp, 0, 0);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, 0644,
                            show_auto_temp, set_auto_temp, 0, 2);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, 0644,
                            show_auto_temp, set_auto_temp, 0, 3);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, 0644,
                            show_auto_temp, set_auto_temp, 0, 4);
-static SENSOR_DEVICE_ATTR_2(pwm1_auto_start, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm1_auto_start, 0644,
                            show_auto_pwm, set_auto_pwm, 0, 0);
-static SENSOR_DEVICE_ATTR(pwm1_auto_slope, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm1_auto_slope, 0644,
                          show_auto_pwm_slope, set_auto_pwm_slope, 0);
 
-static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm2_enable, 0644,
                          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,
+static SENSOR_DEVICE_ATTR(pwm2, 0644, show_pwm, set_pwm, 1);
+static SENSOR_DEVICE_ATTR(pwm2_freq, 0444, show_pwm_freq, set_pwm_freq, 1);
+static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, 0444,
                          show_pwm_temp_map, set_pwm_temp_map, 1);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, 0644,
                            show_auto_pwm, set_auto_pwm, 1, 0);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, 0644,
                            show_auto_pwm, set_auto_pwm, 1, 1);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, 0644,
                            show_auto_pwm, set_auto_pwm, 1, 2);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, 0444,
                            show_auto_pwm, NULL, 1, 3);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, 0644,
                            show_auto_temp, set_auto_temp, 1, 1);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, 0644,
                            show_auto_temp, set_auto_temp, 1, 0);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, 0644,
                            show_auto_temp, set_auto_temp, 1, 2);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, 0644,
                            show_auto_temp, set_auto_temp, 1, 3);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, 0644,
                            show_auto_temp, set_auto_temp, 1, 4);
-static SENSOR_DEVICE_ATTR_2(pwm2_auto_start, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm2_auto_start, 0644,
                            show_auto_pwm, set_auto_pwm, 1, 0);
-static SENSOR_DEVICE_ATTR(pwm2_auto_slope, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm2_auto_slope, 0644,
                          show_auto_pwm_slope, set_auto_pwm_slope, 1);
 
-static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm3_enable, 0644,
                          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,
+static SENSOR_DEVICE_ATTR(pwm3, 0644, show_pwm, set_pwm, 2);
+static SENSOR_DEVICE_ATTR(pwm3_freq, 0444, show_pwm_freq, NULL, 2);
+static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, 0444,
                          show_pwm_temp_map, set_pwm_temp_map, 2);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, 0644,
                            show_auto_pwm, set_auto_pwm, 2, 0);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, 0644,
                            show_auto_pwm, set_auto_pwm, 2, 1);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, 0644,
                            show_auto_pwm, set_auto_pwm, 2, 2);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, 0444,
                            show_auto_pwm, NULL, 2, 3);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 1);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, 0644,
                            show_auto_temp, set_auto_temp, 2, 0);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 2);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 3);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 4);
-static SENSOR_DEVICE_ATTR_2(pwm3_auto_start, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm3_auto_start, 0644,
                            show_auto_pwm, set_auto_pwm, 2, 0);
-static SENSOR_DEVICE_ATTR(pwm3_auto_slope, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm3_auto_slope, 0644,
                          show_auto_pwm_slope, set_auto_pwm_slope, 2);
 
-static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm4_enable, 0644,
                          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,
+static SENSOR_DEVICE_ATTR(pwm4, 0644, show_pwm, set_pwm, 3);
+static SENSOR_DEVICE_ATTR(pwm4_freq, 0444, show_pwm_freq, NULL, 3);
+static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, 0444,
                          show_pwm_temp_map, set_pwm_temp_map, 3);
-static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 1);
-static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm4_auto_point1_temp_hyst, 0644,
                            show_auto_temp, set_auto_temp, 2, 0);
-static SENSOR_DEVICE_ATTR_2(pwm4_auto_point2_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm4_auto_point2_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 2);
-static SENSOR_DEVICE_ATTR_2(pwm4_auto_point3_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm4_auto_point3_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 3);
-static SENSOR_DEVICE_ATTR_2(pwm4_auto_start, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm4_auto_start, 0644,
                            show_auto_pwm, set_auto_pwm, 3, 0);
-static SENSOR_DEVICE_ATTR(pwm4_auto_slope, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm4_auto_slope, 0644,
                          show_auto_pwm_slope, set_auto_pwm_slope, 3);
 
-static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm5_enable, 0644,
                          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,
+static SENSOR_DEVICE_ATTR(pwm5, 0644, show_pwm, set_pwm, 4);
+static SENSOR_DEVICE_ATTR(pwm5_freq, 0444, show_pwm_freq, NULL, 4);
+static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, 0444,
                          show_pwm_temp_map, set_pwm_temp_map, 4);
-static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 1);
-static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm5_auto_point1_temp_hyst, 0644,
                            show_auto_temp, set_auto_temp, 2, 0);
-static SENSOR_DEVICE_ATTR_2(pwm5_auto_point2_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm5_auto_point2_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 2);
-static SENSOR_DEVICE_ATTR_2(pwm5_auto_point3_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm5_auto_point3_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 3);
-static SENSOR_DEVICE_ATTR_2(pwm5_auto_start, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm5_auto_start, 0644,
                            show_auto_pwm, set_auto_pwm, 4, 0);
-static SENSOR_DEVICE_ATTR(pwm5_auto_slope, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm5_auto_slope, 0644,
                          show_auto_pwm_slope, set_auto_pwm_slope, 4);
 
-static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm6_enable, 0644,
                          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,
+static SENSOR_DEVICE_ATTR(pwm6, 0644, show_pwm, set_pwm, 5);
+static SENSOR_DEVICE_ATTR(pwm6_freq, 0444, show_pwm_freq, NULL, 5);
+static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, 0444,
                          show_pwm_temp_map, set_pwm_temp_map, 5);
-static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 1);
-static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp_hyst, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm6_auto_point1_temp_hyst, 0644,
                            show_auto_temp, set_auto_temp, 2, 0);
-static SENSOR_DEVICE_ATTR_2(pwm6_auto_point2_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm6_auto_point2_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 2);
-static SENSOR_DEVICE_ATTR_2(pwm6_auto_point3_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm6_auto_point3_temp, 0644,
                            show_auto_temp, set_auto_temp, 2, 3);
-static SENSOR_DEVICE_ATTR_2(pwm6_auto_start, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR_2(pwm6_auto_start, 0644,
                            show_auto_pwm, set_auto_pwm, 5, 0);
-static SENSOR_DEVICE_ATTR(pwm6_auto_slope, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm6_auto_slope, 0644,
                          show_auto_pwm_slope, set_auto_pwm_slope, 5);
 
 /* Alarms */
@@ -2146,9 +2362,12 @@ static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
 {
        struct it87_data *data = it87_update_device(dev);
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%u\n", data->alarms);
 }
-static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+static DEVICE_ATTR(alarms, 0444, show_alarms, NULL);
 
 static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
                          char *buf)
@@ -2156,6 +2375,9 @@ static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = it87_update_device(dev);
        int bitnr = to_sensor_dev_attr(attr)->index;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
 }
 
@@ -2164,48 +2386,46 @@ static ssize_t clear_intrusion(struct device *dev,
                               size_t count)
 {
        struct it87_data *data = dev_get_drvdata(dev);
-       int config;
+       int err, config;
        long val;
 
        if (kstrtol(buf, 10, &val) < 0 || val != 0)
                return -EINVAL;
 
-       mutex_lock(&data->update_lock);
-       config = it87_read_value(data, IT87_REG_CONFIG);
-       if (config < 0) {
-               count = config;
-       } else {
-               config |= BIT(5);
-               it87_write_value(data, IT87_REG_CONFIG, config);
-               /* Invalidate cache to force re-read */
-               data->valid = 0;
-       }
-       mutex_unlock(&data->update_lock);
+       err = it87_lock(data);
+       if (err)
+               return err;
 
+       config = data->read(data, IT87_REG_CONFIG);
+       config |= BIT(5);
+       data->write(data, IT87_REG_CONFIG, config);
+       /* Invalidate cache to force re-read */
+       data->valid = 0;
+       it87_unlock(data);
        return count;
 }
 
-static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
-static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
-static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
-static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
-static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
-static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
-static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
-static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
-static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
-static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
-static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
-static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
-static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
-static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_alarm, NULL, 7);
-static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
-static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
-static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
-static SENSOR_DEVICE_ATTR(temp4_alarm, S_IRUGO, show_alarm, NULL, 19);
-static SENSOR_DEVICE_ATTR(temp5_alarm, S_IRUGO, show_alarm, NULL, 20);
-static SENSOR_DEVICE_ATTR(temp6_alarm, S_IRUGO, show_alarm, NULL, 21);
-static SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(in0_alarm, 0444, show_alarm, NULL, 8);
+static SENSOR_DEVICE_ATTR(in1_alarm, 0444, show_alarm, NULL, 9);
+static SENSOR_DEVICE_ATTR(in2_alarm, 0444, show_alarm, NULL, 10);
+static SENSOR_DEVICE_ATTR(in3_alarm, 0444, show_alarm, NULL, 11);
+static SENSOR_DEVICE_ATTR(in4_alarm, 0444, show_alarm, NULL, 12);
+static SENSOR_DEVICE_ATTR(in5_alarm, 0444, show_alarm, NULL, 13);
+static SENSOR_DEVICE_ATTR(in6_alarm, 0444, show_alarm, NULL, 14);
+static SENSOR_DEVICE_ATTR(in7_alarm, 0444, show_alarm, NULL, 15);
+static SENSOR_DEVICE_ATTR(fan1_alarm, 0444, show_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan2_alarm, 0444, show_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan3_alarm, 0444, show_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(fan4_alarm, 0444, show_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(fan5_alarm, 0444, show_alarm, NULL, 6);
+static SENSOR_DEVICE_ATTR(fan6_alarm, 0444, show_alarm, NULL, 7);
+static SENSOR_DEVICE_ATTR(temp1_alarm, 0444, show_alarm, NULL, 16);
+static SENSOR_DEVICE_ATTR(temp2_alarm, 0444, show_alarm, NULL, 17);
+static SENSOR_DEVICE_ATTR(temp3_alarm, 0444, show_alarm, NULL, 18);
+static SENSOR_DEVICE_ATTR(temp4_alarm, 0444, show_alarm, NULL, 19);
+static SENSOR_DEVICE_ATTR(temp5_alarm, 0444, show_alarm, NULL, 20);
+static SENSOR_DEVICE_ATTR(temp6_alarm, 0444, show_alarm, NULL, 21);
+static SENSOR_DEVICE_ATTR(intrusion0_alarm, 0644,
                          show_alarm, clear_intrusion, 4);
 
 static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
@@ -2214,6 +2434,9 @@ static ssize_t show_beep(struct device *dev, struct device_attribute *attr,
        struct it87_data *data = it87_update_device(dev);
        int bitnr = to_sensor_dev_attr(attr)->index;
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1);
 }
 
@@ -2223,44 +2446,48 @@ static ssize_t set_beep(struct device *dev, struct device_attribute *attr,
        int bitnr = to_sensor_dev_attr(attr)->index;
        struct it87_data *data = dev_get_drvdata(dev);
        long val;
+       int err;
 
        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);
+       err = it87_lock(data);
+       if (err)
+               return err;
+
+       data->beeps = data->read(data, IT87_REG_BEEP_ENABLE);
        if (val)
                data->beeps |= BIT(bitnr);
        else
                data->beeps &= ~BIT(bitnr);
-       it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps);
-       mutex_unlock(&data->update_lock);
+       data->write(data, IT87_REG_BEEP_ENABLE, data->beeps);
+       it87_unlock(data);
        return count;
 }
 
-static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(in0_beep, 0644,
                          show_beep, set_beep, 1);
-static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1);
-static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1);
-static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1);
-static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1);
-static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1);
-static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1);
-static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1);
+static SENSOR_DEVICE_ATTR(in1_beep, 0444, show_beep, NULL, 1);
+static SENSOR_DEVICE_ATTR(in2_beep, 0444, show_beep, NULL, 1);
+static SENSOR_DEVICE_ATTR(in3_beep, 0444, show_beep, NULL, 1);
+static SENSOR_DEVICE_ATTR(in4_beep, 0444, show_beep, NULL, 1);
+static SENSOR_DEVICE_ATTR(in5_beep, 0444, show_beep, NULL, 1);
+static SENSOR_DEVICE_ATTR(in6_beep, 0444, show_beep, NULL, 1);
+static SENSOR_DEVICE_ATTR(in7_beep, 0444, show_beep, NULL, 1);
 /* fanX_beep writability is set later */
-static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0);
-static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0);
-static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0);
-static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0);
-static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0);
-static SENSOR_DEVICE_ATTR(fan6_beep, S_IRUGO, show_beep, set_beep, 0);
-static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(fan1_beep, 0444, show_beep, set_beep, 0);
+static SENSOR_DEVICE_ATTR(fan2_beep, 0444, show_beep, set_beep, 0);
+static SENSOR_DEVICE_ATTR(fan3_beep, 0444, show_beep, set_beep, 0);
+static SENSOR_DEVICE_ATTR(fan4_beep, 0444, show_beep, set_beep, 0);
+static SENSOR_DEVICE_ATTR(fan5_beep, 0444, show_beep, set_beep, 0);
+static SENSOR_DEVICE_ATTR(fan6_beep, 0444, show_beep, set_beep, 0);
+static SENSOR_DEVICE_ATTR(temp1_beep, 0644,
                          show_beep, set_beep, 2);
-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 SENSOR_DEVICE_ATTR(temp4_beep, S_IRUGO, show_beep, NULL, 2);
-static SENSOR_DEVICE_ATTR(temp5_beep, S_IRUGO, show_beep, NULL, 2);
-static SENSOR_DEVICE_ATTR(temp6_beep, S_IRUGO, show_beep, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp2_beep, 0444, show_beep, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp3_beep, 0444, show_beep, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_beep, 0444, show_beep, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp5_beep, 0444, show_beep, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp6_beep, 0444, show_beep, NULL, 2);
 
 static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr,
                            char *buf)
@@ -2283,16 +2510,19 @@ static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr,
 
        return count;
 }
-static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
+static DEVICE_ATTR(vrm, 0644, show_vrm_reg, store_vrm_reg);
 
 static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
                            char *buf)
 {
        struct it87_data *data = it87_update_device(dev);
 
+       if (IS_ERR(data))
+               return PTR_ERR(data);
+
        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 DEVICE_ATTR(cpu0_vid, 0444, show_vid_reg, NULL);
 
 static ssize_t show_label(struct device *dev, struct device_attribute *attr,
                          char *buf)
@@ -2323,11 +2553,11 @@ static ssize_t show_label(struct device *dev, struct device_attribute *attr,
 
        return sprintf(buf, "%s\n", label);
 }
-static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
-static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
-static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2);
+static SENSOR_DEVICE_ATTR(in3_label, 0444, show_label, NULL, 0);
+static SENSOR_DEVICE_ATTR(in7_label, 0444, show_label, NULL, 1);
+static SENSOR_DEVICE_ATTR(in8_label, 0444, show_label, NULL, 2);
 /* AVCC3 */
-static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 3);
+static SENSOR_DEVICE_ATTR(in9_label, 0444, show_label, NULL, 3);
 
 static umode_t it87_in_is_visible(struct kobject *kobj,
                                  struct attribute *attr, int index)
@@ -2555,7 +2785,7 @@ static umode_t it87_fan_is_visible(struct kobject *kobj,
                        return 0;
                /* first fan beep attribute is writable */
                if (i == __ffs(data->has_fan))
-                       return attr->mode | S_IWUSR;
+                       return attr->mode | 0200;
        }
 
        if (a == 4 && has_16bit_fans(data))     /* divisor */
@@ -2618,11 +2848,11 @@ static umode_t it87_pwm_is_visible(struct kobject *kobj,
 
        /* pwmX_auto_channels_temp is only writable if auto pwm is supported */
        if (a == 3 && (has_old_autopwm(data) || has_newer_autopwm(data)))
-               return attr->mode | S_IWUSR;
+               return attr->mode | 0200;
 
        /* 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 | 0200;
 
        return attr->mode;
 }
@@ -2764,10 +2994,13 @@ static const struct attribute_group it87_group_auto_pwm = {
 
 /* SuperIO detection - will change isa_address if a chip is found */
 static int __init it87_find(int sioaddr, unsigned short *address,
+                           phys_addr_t *mmio_address,
                            struct it87_sio_data *sio_data)
 {
        const struct it87_devices *config;
+       phys_addr_t base = 0;
        bool doexit = true;
+       char mmio_str[32];
        u16 chip_type;
        int err;
 
@@ -2775,6 +3008,8 @@ static int __init it87_find(int sioaddr, unsigned short *address,
        if (err)
                return err;
 
+       sio_data->sioaddr = sioaddr;
+
        err = -ENODEV;
        chip_type = superio_inw(sioaddr, DEVID);
        if (chip_type == 0xffff)
@@ -2809,6 +3044,12 @@ static int __init it87_find(int sioaddr, unsigned short *address,
        case IT8732F_DEVID:
                sio_data->type = it8732;
                break;
+       case IT8736F_DEVID:
+               sio_data->type = it8736;
+               break;
+       case IT8738E_DEVID:
+               sio_data->type = it8738;
+               break;
        case IT8792E_DEVID:
                sio_data->type = it8792;
                /*
@@ -2845,6 +3086,9 @@ static int __init it87_find(int sioaddr, unsigned short *address,
        case IT8623E_DEVID:
                sio_data->type = it8603;
                break;
+       case IT8606E_DEVID:
+               sio_data->type = it8606;
+               break;
        case IT8607E_DEVID:
                sio_data->type = it8607;
                break;
@@ -2891,14 +3135,32 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                goto exit;
        }
 
+       sio_data->doexit = doexit;
+
        err = 0;
        sio_data->revision = superio_inb(sioaddr, DEVREV) & 0x0f;
-       pr_info("Found IT%04x%s chip at 0x%x, revision %d\n", chip_type,
-               it87_devices[sio_data->type].suffix,
-               *address, sio_data->revision);
 
        config = &it87_devices[sio_data->type];
 
+       if (has_mmio(config) && mmio) {
+               u8 reg;
+
+               reg = superio_inb(sioaddr, IT87_EC_HWM_MIO_REG);
+               if (reg & BIT(5)) {
+                       base = 0xf0000000 + ((reg & 0x0f) << 24);
+                       base += (reg & 0xc0) << 14;
+               }
+       }
+       *mmio_address = base;
+
+       mmio_str[0] = '\0';
+       if (base)
+               snprintf(mmio_str, sizeof(mmio_str), " [MMIO at %pa]", &base);
+
+       pr_info("Found %s chip at 0x%x%s, revision %d\n",
+               it87_devices[sio_data->type].model,
+               *address, mmio_str, sio_data->revision);
+
        /* in7 (VSB or VCCH5V) is always internal on some chips */
        if (has_in7_internal(config))
                sio_data->internal |= BIT(1);
@@ -2995,7 +3257,8 @@ static int __init it87_find(int sioaddr, unsigned short *address,
 
                sio_data->beep_pin = superio_inb(sioaddr,
                                                 IT87_SIO_BEEP_PIN_REG) & 0x3f;
-       } else if (sio_data->type == it8603 || sio_data->type == it8607) {
+       } else if (sio_data->type == it8603 || sio_data->type == it8606 ||
+                  sio_data->type == it8607) {
                int reg27, reg29;
 
                superio_select(sioaddr, GPIO);
@@ -3158,7 +3421,8 @@ static int __init it87_find(int sioaddr, unsigned short *address,
 
                sio_data->beep_pin = superio_inb(sioaddr,
                                                 IT87_SIO_BEEP_PIN_REG) & 0x3f;
-       } else if (sio_data->type == it8732) {
+       } else if (sio_data->type == it8732 || sio_data->type == it8736 ||
+                  sio_data->type == it8738) {
                int reg;
 
                superio_select(sioaddr, GPIO);
@@ -3180,9 +3444,11 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                        sio_data->skip_fan |= BIT(3);
 
                /* Check if AVCC is on VIN3 */
-               reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
-               if (reg & BIT(0))
-                       sio_data->internal |= BIT(0);
+               if (sio_data->type != it8738) {
+                       reg = superio_inb(sioaddr, IT87_SIO_PINX2_REG);
+                       if (reg & BIT(0))
+                               sio_data->internal |= BIT(0);
+               }
 
                sio_data->beep_pin = superio_inb(sioaddr,
                                                 IT87_SIO_BEEP_PIN_REG) & 0x3f;
@@ -3220,11 +3486,9 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                reg2d = superio_inb(sioaddr, IT87_SIO_PINX4_REG);
                regd3 = superio_inb(sioaddr, IT87_SIO_GPIO9_REG);
 
-               /* Check for pwm2, fan2 */
+               /* Check for pwm2 */
                if (reg29 & BIT(1))
                        sio_data->skip_pwm |= BIT(1);
-               if (reg2d & BIT(4))
-                       sio_data->skip_fan |= BIT(1);
 
                /* Check for pwm3, fan3 */
                if (reg27 & BIT(6))
@@ -3232,27 +3496,37 @@ static int __init it87_find(int sioaddr, unsigned short *address,
                if (reg27 & BIT(7))
                        sio_data->skip_fan |= BIT(2);
 
-               /* Check for pwm4, fan4, pwm5, fan5 */
+               /* Check for fan2, pwm4, fan4, pwm5, fan5 */
                if (sio_data->type == it8625) {
                        int reg25 = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
 
+                       if (reg29 & BIT(2))
+                               sio_data->skip_fan |= BIT(1);
                        if (reg25 & BIT(6))
                                sio_data->skip_fan |= BIT(3);
                        if (reg25 & BIT(5))
                                sio_data->skip_pwm |= BIT(3);
                        if (reg27 & BIT(3))
                                sio_data->skip_pwm |= BIT(4);
-                       if (reg27 & BIT(1))
+                       if (!(reg27 & BIT(1)))
                                sio_data->skip_fan |= BIT(4);
                } else {
                        int reg26 = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
 
+                       if (reg2d & BIT(4))
+                               sio_data->skip_fan |= BIT(1);
                        if (regd3 & BIT(2))
                                sio_data->skip_pwm |= BIT(3);
                        if (regd3 & BIT(3))
                                sio_data->skip_fan |= BIT(3);
                        if (reg26 & BIT(5))
                                sio_data->skip_pwm |= BIT(4);
+                       /*
+                        * Table 6-1 in datasheet claims that FAN_TAC5 would
+                        * be enabled with 26h[4]=0. This contradicts with the
+                        * information in section 8.3.9 and with feedback from
+                        * users.
+                        */
                        if (!(reg26 & BIT(4)))
                                sio_data->skip_fan |= BIT(4);
                }
@@ -3369,6 +3643,15 @@ static int __init it87_find(int sioaddr, unsigned short *address,
        if (sio_data->beep_pin)
                pr_info("Beeping is supported\n");
 
+       if (config->smbus_bitmap && !base) {
+               u8 reg;
+
+               superio_select(sioaddr, PME);
+               reg = superio_inb(sioaddr, IT87_SPECIAL_CFG_REG);
+               sio_data->ec_special_config = reg;
+               sio_data->smbus_bitmap = reg & config->smbus_bitmap;
+       }
+
 exit:
        superio_exit(sioaddr, doexit);
        return err;
@@ -3434,6 +3717,17 @@ static void it87_init_regs(struct platform_device *pdev)
                data->REG_TEMP_HIGH = IT87_REG_TEMP_HIGH;
                break;
        }
+
+       if (data->mmio) {
+               data->read = it87_mmio_read;
+               data->write = it87_mmio_write;
+       } else if (has_bank_sel(data)) {
+               data->read = it87_io_read;
+               data->write = it87_io_write;
+       } else {
+               data->read = _it87_io_read;
+               data->write = _it87_io_write;
+       }
 }
 
 /* Called when we have found a new IT87. */
@@ -3479,14 +3773,14 @@ static void it87_init_device(struct platform_device *pdev)
         * but is still confusing, so change to 127 degrees C.
         */
        for (i = 0; i < NUM_VIN_LIMIT; i++) {
-               tmp = it87_read_value(data, IT87_REG_VIN_MIN(i));
+               tmp = data->read(data, IT87_REG_VIN_MIN(i));
                if (tmp == 0xff)
-                       it87_write_value(data, IT87_REG_VIN_MIN(i), 0);
+                       data->write(data, IT87_REG_VIN_MIN(i), 0);
        }
        for (i = 0; i < data->num_temp_limit; i++) {
-               tmp = it87_read_value(data, data->REG_TEMP_HIGH[i]);
+               tmp = data->read(data, data->REG_TEMP_HIGH[i]);
                if (tmp == 0xff)
-                       it87_write_value(data, data->REG_TEMP_HIGH[i], 127);
+                       data->write(data, data->REG_TEMP_HIGH[i], 127);
        }
 
        /*
@@ -3497,32 +3791,30 @@ static void it87_init_device(struct platform_device *pdev)
         */
 
        /* Check if voltage monitors are reset manually or by some reason */
-       tmp = it87_read_value(data, IT87_REG_VIN_ENABLE);
+       tmp = data->read(data, IT87_REG_VIN_ENABLE);
        if ((tmp & 0xff) == 0) {
                /* Enable all voltage monitors */
-               it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff);
+               data->write(data, IT87_REG_VIN_ENABLE, 0xff);
        }
 
        /* Check if tachometers are reset manually or by some reason */
        mask = 0x70 & ~(sio_data->skip_fan << 4);
-       data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL);
+       data->fan_main_ctrl = data->read(data, IT87_REG_FAN_MAIN_CTRL);
        if ((data->fan_main_ctrl & mask) == 0) {
                /* Enable all fan tachometers */
                data->fan_main_ctrl |= mask;
-               it87_write_value(data, IT87_REG_FAN_MAIN_CTRL,
-                                data->fan_main_ctrl);
+               data->write(data, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl);
        }
        data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
 
-       tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
+       tmp = data->read(data, IT87_REG_FAN_16BIT);
 
        /* Set tachometers to 16-bit mode if needed */
        if (has_fan16_config(data)) {
                if (~tmp & 0x07 & data->has_fan) {
                        dev_dbg(&pdev->dev,
                                "Setting fan1-3 to 16-bit mode\n");
-                       it87_write_value(data, IT87_REG_FAN_16BIT,
-                                        tmp | 0x07);
+                       data->write(data, IT87_REG_FAN_16BIT, tmp | 0x07);
                }
        }
 
@@ -3541,7 +3833,7 @@ static void it87_init_device(struct platform_device *pdev)
                        break;
                case it8625:
                case it8665:
-                       tmp = it87_read_value(data, IT87_REG_FAN_DIV);
+                       tmp = data->read(data, IT87_REG_FAN_DIV);
                        if (tmp & BIT(3))
                                data->has_fan |= BIT(5); /* fan6 enabled */
                        break;
@@ -3558,7 +3850,7 @@ static void it87_init_device(struct platform_device *pdev)
                switch (data->type) {
                case it8620:
                case it8686:
-                       tmp = it87_read_value(data, IT87_REG_FAN_DIV);
+                       tmp = data->read(data, IT87_REG_FAN_DIV);
                        if (!(tmp & BIT(3)))
                                sio_data->skip_pwm |= BIT(5);
                        break;
@@ -3567,10 +3859,17 @@ static void it87_init_device(struct platform_device *pdev)
                }
        }
 
+       if (has_bank_sel(data)) {
+               for (i = 0; i < 3; i++)
+                       data->temp_src[i] =
+                               data->read(data, IT87_REG_TEMP_SRC1[i]);
+               data->temp_src[3] = data->read(data, IT87_REG_TEMP_SRC2);
+       }
+
        /* Start monitoring */
-       it87_write_value(data, IT87_REG_CONFIG,
-                        (it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
-                        | (update_vbat ? 0x41 : 0x01));
+       data->write(data, IT87_REG_CONFIG,
+                   (data->read(data, IT87_REG_CONFIG) & 0x3e) |
+                                       (update_vbat ? 0x41 : 0x01));
 }
 
 /* Return 1 if and only if the PWM interface is safe to use */
@@ -3582,7 +3881,7 @@ static int it87_check_pwm(struct device *dev)
         * and polarity set to active low is sign that this is the case so we
         * disable pwm control to protect the user.
         */
-       int tmp = it87_read_value(data, IT87_REG_FAN_CTL);
+       int tmp = data->read(data, IT87_REG_FAN_CTL);
 
        if ((tmp & 0x87) == 0) {
                if (fix_pwm_polarity) {
@@ -3595,7 +3894,7 @@ static int it87_check_pwm(struct device *dev)
                        u8 pwm[3];
 
                        for (i = 0; i < ARRAY_SIZE(pwm); i++)
-                               pwm[i] = it87_read_value(data,
+                               pwm[i] = data->read(data,
                                                         data->REG_PWM[i]);
 
                        /*
@@ -3607,12 +3906,10 @@ static int it87_check_pwm(struct device *dev)
                        if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) {
                                dev_info(dev,
                                         "Reconfiguring PWM to active high polarity\n");
-                               it87_write_value(data, IT87_REG_FAN_CTL,
-                                                tmp | 0x87);
+                               data->write(data, IT87_REG_FAN_CTL, tmp | 0x87);
                                for (i = 0; i < 3; i++)
-                                       it87_write_value(data,
-                                                        data->REG_PWM[i],
-                                                        0x7f & ~pwm[i]);
+                                       data->write(data, data->REG_PWM[i],
+                                                   0x7f & ~pwm[i]);
                                return 1;
                        }
 
@@ -3639,29 +3936,38 @@ static int it87_probe(struct platform_device *pdev)
        struct it87_sio_data *sio_data = dev_get_platdata(dev);
        int enable_pwm_interface;
        struct device *hwmon_dev;
+       int err;
 
-       res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-       if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
-                                DRVNAME)) {
-               dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
-                       (unsigned long)res->start,
-                       (unsigned long)(res->start + IT87_EC_EXTENT - 1));
-               return -EBUSY;
-       }
-
-       data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
+       data = devm_kzalloc(dev, sizeof(struct it87_data), GFP_KERNEL);
        if (!data)
                return -ENOMEM;
 
+       res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+       if (res) {
+               if (!devm_request_region(dev, res->start, IT87_EC_EXTENT,
+                                        DRVNAME)) {
+                       dev_err(dev, "Failed to request region %pR\n", res);
+                       return -EBUSY;
+               }
+       } else {
+               res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+               data->mmio = devm_ioremap_resource(dev, res);
+               if (IS_ERR(data->mmio))
+                       return PTR_ERR(data->mmio);
+       }
+
        data->addr = res->start;
        data->type = sio_data->type;
+       data->sioaddr = sio_data->sioaddr;
+       data->smbus_bitmap = sio_data->smbus_bitmap;
+       data->ec_special_config = sio_data->ec_special_config;
+       data->doexit = sio_data->doexit;
        data->features = it87_devices[sio_data->type].features;
        data->num_temp_limit = it87_devices[sio_data->type].num_temp_limit;
        data->num_temp_offset = it87_devices[sio_data->type].num_temp_offset;
        data->pwm_num_temp_map = it87_devices[sio_data->type].num_temp_map;
        data->peci_mask = it87_devices[sio_data->type].peci_mask;
        data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask;
-       data->bank = 0xff;
 
        /*
         * IT8705F Datasheet 0.4.1, 3h == Version G.
@@ -3686,11 +3992,6 @@ static int it87_probe(struct platform_device *pdev)
                break;
        }
 
-       /* Now, we do the remaining detection. */
-       if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) ||
-           it87_read_value(data, IT87_REG_CHIPID) != 0x90)
-               return -ENODEV;
-
        platform_set_drvdata(pdev, data);
 
        mutex_init(&data->update_lock);
@@ -3698,6 +3999,28 @@ static int it87_probe(struct platform_device *pdev)
        /* Initialize register pointers */
        it87_init_regs(pdev);
 
+       /*
+        * We need to disable SMBus before we can read any registers in
+        * the envmon address space, even if it is for chip identification
+        * purposes. If the chip has SMBus client support, it likely also has
+        * multi-page envmon registers, so we have to set the page anyway
+        * before accessing those registers. Kind of a chicken-and-egg
+        * problem.
+        * Fortunately, the chip was already identified through the SIO
+        * address space, only recent chips are affected, and this is just
+        * an additional safeguard.
+        */
+       err = smbus_disable(data);
+       if (err)
+               return err;
+
+       /* Now, we do the remaining detection. */
+       if ((data->read(data, IT87_REG_CONFIG) & 0x80) ||
+           data->read(data, IT87_REG_CHIPID) != 0x90) {
+               smbus_enable(data);
+               return -ENODEV;
+       }
+
        /* Check PWM configuration */
        enable_pwm_interface = it87_check_pwm(dev);
 
@@ -3722,31 +4045,37 @@ static int it87_probe(struct platform_device *pdev)
        data->has_temp = 0x07;
        if (sio_data->skip_temp & BIT(2)) {
                if (sio_data->type == it8782 &&
-                   !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
+                   !(data->read(data, IT87_REG_TEMP_EXTRA) & 0x80))
                        data->has_temp &= ~BIT(2);
        }
 
        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);
+       if (has_four_temp(data)) {
+               data->has_temp |= BIT(3);
+       } else if (has_six_temp(data)) {
+               if (sio_data->type == it8655 || sio_data->type == it8665) {
+                       data->has_temp |= BIT(3) | BIT(4) | BIT(5);
+               } else {
+                       u8 reg = data->read(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);
+               }
        }
 
        data->has_beep = !!sio_data->beep_pin;
@@ -3754,6 +4083,8 @@ static int it87_probe(struct platform_device *pdev)
        /* Initialize the IT87 chip */
        it87_init_device(pdev);
 
+       smbus_enable(data);
+
        if (!sio_data->skip_vid) {
                data->has_vid = true;
                data->vrm = vid_which_vrm();
@@ -3789,25 +4120,33 @@ static struct platform_driver it87_driver = {
        .probe  = it87_probe,
 };
 
-static int __init it87_device_add(int index, unsigned short address,
+static int __init it87_device_add(int index, unsigned short sio_address,
+                                 phys_addr_t mmio_address,
                                  const struct it87_sio_data *sio_data)
 {
        struct platform_device *pdev;
        struct resource res = {
-               .start  = address + IT87_EC_OFFSET,
-               .end    = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
                .name   = DRVNAME,
-               .flags  = IORESOURCE_IO,
        };
        int err;
 
+       if (mmio_address) {
+               res.start = mmio_address;
+               res.end = mmio_address + 0x400 - 1;
+               res.flags = IORESOURCE_MEM;
+       } else {
+               res.start = sio_address + IT87_EC_OFFSET;
+               res.end = sio_address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1;
+               res.flags = IORESOURCE_IO;
+       }
+
        err = acpi_check_resource_conflict(&res);
        if (err) {
                if (!ignore_resource_conflict)
                        return err;
        }
 
-       pdev = platform_device_alloc(DRVNAME, address);
+       pdev = platform_device_alloc(DRVNAME, sio_address);
        if (!pdev)
                return -ENOMEM;
 
@@ -3876,21 +4215,24 @@ static struct it87_dmi_data nvidia_fn68pt = {
 static const struct dmi_system_id it87_dmi_table[] __initconst = {
        {
                .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR, "Gigabyte Technology Co., Ltd."),
+                       DMI_MATCH(DMI_SYS_VENDOR,
+                                 "Gigabyte Technology Co., Ltd."),
                        DMI_MATCH(DMI_BOARD_NAME, "AB350"),
                },
                .driver_data = &gigabyte_sio2_force,
        },
        {
                .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR, "Gigabyte Technology Co., Ltd."),
+                       DMI_MATCH(DMI_SYS_VENDOR,
+                                 "Gigabyte Technology Co., Ltd."),
                        DMI_MATCH(DMI_BOARD_NAME, "AX370"),
                },
                .driver_data = &gigabyte_sio2_force,
        },
        {
                .matches = {
-                       DMI_MATCH(DMI_SYS_VENDOR, "Gigabyte Technology Co., Ltd."),
+                       DMI_MATCH(DMI_SYS_VENDOR,
+                                 "Gigabyte Technology Co., Ltd."),
                        DMI_MATCH(DMI_BOARD_NAME, "Z97X-Gaming G1"),
                },
                .driver_data = &gigabyte_sio2_force,
@@ -3912,9 +4254,12 @@ static int __init sm_it87_init(void)
        int sioaddr[2] = { REG_2E, REG_4E };
        struct it87_sio_data sio_data;
        unsigned short isa_address;
+       phys_addr_t mmio_address;
        bool found = false;
        int i, err;
 
+       pr_info("it87 driver version %s\n", IT87_DRIVER_VERSION);
+
        if (dmi)
                dmi_data = dmi->driver_data;
 
@@ -3928,13 +4273,15 @@ static int __init sm_it87_init(void)
        for (i = 0; i < ARRAY_SIZE(sioaddr); i++) {
                memset(&sio_data, 0, sizeof(struct it87_sio_data));
                isa_address = 0;
-               err = it87_find(sioaddr[i], &isa_address, &sio_data);
+               mmio_address = 0;
+               err = it87_find(sioaddr[i], &isa_address, &mmio_address,
+                               &sio_data);
                if (err || isa_address == 0)
                        continue;
 
                if (dmi_data)
                        sio_data.skip_pwm |= dmi_data->skip_pwm;
-               err = it87_device_add(i, isa_address, &sio_data);
+               err = it87_device_add(i, isa_address, mmio_address, &sio_data);
                if (err)
                        goto exit_dev_unregister;
                found = true;
@@ -3964,12 +4311,13 @@ static void __exit sm_it87_exit(void)
 
 MODULE_AUTHOR("Chris Gauthron, Jean Delvare <jdelvare@suse.de>");
 MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
-module_param(update_vbat, bool, 0);
+module_param(update_vbat, bool, 0000);
 MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
-module_param(fix_pwm_polarity, bool, 0);
+module_param(fix_pwm_polarity, bool, 0000);
 MODULE_PARM_DESC(fix_pwm_polarity,
                 "Force PWM polarity to active high (DANGEROUS)");
 MODULE_LICENSE("GPL");
+MODULE_VERSION(IT87_DRIVER_VERSION);
 
 module_init(sm_it87_init);
 module_exit(sm_it87_exit);