hwmon: (it87) Add support for IT8771E and IT8772E

Assume that IT8771E and IT8772E are fully compatible with IT8728F.

IT8771E support contributed by Kelly Anderson.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <khali@linux-fr.org>

diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87
index 8386aad..c263740 100644 (file)
--- a/Documentation/hwmon/it87
+++ b/Documentation/hwmon/it87
@@ -30,6 +30,14 @@ Supported chips:
     Prefix: 'it8728'
     Addresses scanned: from Super I/O config space (8 I/O ports)
     Datasheet: Not publicly available
+  * IT8771E
+    Prefix: 'it8771'
+    Addresses scanned: from Super I/O config space (8 I/O ports)
+    Datasheet: Not publicly available
+  * IT8772E
+    Prefix: 'it8772'
+    Addresses scanned: from Super I/O config space (8 I/O ports)
+    Datasheet: Not publicly available
   * IT8782F
     Prefix: 'it8782'
     Addresses scanned: from Super I/O config space (8 I/O ports)
@@ -83,8 +91,8 @@ Description
 -----------
 
 This driver implements support for the IT8705F, IT8712F, IT8716F,
-IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E, IT8781F, IT8782F,
-IT8783E/F, and SiS950 chips.
+IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E, IT8771E, IT8772E,
+IT8782F, IT8783E/F, and SiS950 chips.
 
 These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
 joysticks and other miscellaneous stuff. For hardware monitoring, they
@@ -118,8 +126,8 @@ The IT8726F is just bit enhanced IT8716F with additional hardware
 for AMD power sequencing. Therefore the chip will appear as IT8716F
 to userspace applications.
 
-The IT8728F is considered compatible with the IT8721F, until a datasheet
-becomes available (hopefully.)
+The IT8728F, IT8771E, and IT8772E are considered compatible with the IT8721F,
+until a datasheet becomes available (hopefully.)
 
 Temperatures are measured in degrees Celsius. An alarm is triggered once
 when the Overtemperature Shutdown limit is crossed.

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index ef57572..3588b2a 100644 (file)
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -506,7 +506,8 @@ config SENSORS_IT87
        help
          If you say yes here you get support for ITE IT8705F, IT8712F,
          IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E,
-         IT8782F, and IT8783E/F sensor chips, and the SiS950 clone.
+         IT8771E, IT8772E, IT8782F, and IT8783E/F sensor chips, and the
+         SiS950 clone.
 
          This driver can also be built as a module.  If so, the module
          will be called it87.

diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 29632e8..37fc980 100644 (file)
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -19,6 +19,8 @@
  *            IT8726F  Super I/O chip w/LPC interface
  *            IT8728F  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
  *            IT8782F  Super I/O chip w/LPC interface
  *            IT8783E/F Super I/O chip w/LPC interface
  *            Sis950   A clone of the IT8705F
@@ -61,8 +63,8 @@
 
 #define DRVNAME "it87"
 
-enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8782,
-            it8783 };
+enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771,
+            it8772, it8782, it8783 };
 
 static unsigned short force_id;
 module_param(force_id, ushort, 0);
@@ -140,6 +142,8 @@ static inline void superio_exit(void)
 #define IT8721F_DEVID 0x8721
 #define IT8726F_DEVID 0x8726
 #define IT8728F_DEVID 0x8728
+#define IT8771E_DEVID 0x8771
+#define IT8772E_DEVID 0x8772
 #define IT8782F_DEVID 0x8782
 #define IT8783E_DEVID 0x8783
 #define IT87_ACT_REG  0x30
@@ -281,6 +285,24 @@ static const struct it87_devices it87_devices[] = {
                  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
                .peci_mask = 0x07,
        },
+       [it8771] = {
+               .name = "it8771",
+               .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
+                 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
+                                       /* PECI: guesswork */
+                                       /* 12mV ADC (OHM) */
+                                       /* 16 bit fans (OHM) */
+               .peci_mask = 0x07,
+       },
+       [it8772] = {
+               .name = "it8772",
+               .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
+                 | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI,
+                                       /* PECI (coreboot) */
+                                       /* 12mV ADC (HWSensors4, OHM) */
+                                       /* 16 bit fans (HWSensors4, OHM) */
+               .peci_mask = 0x07,
+       },
        [it8782] = {
                .name = "it8782",
                .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
@@ -1708,6 +1730,12 @@ static int __init it87_find(unsigned short *address,
        case IT8728F_DEVID:
                sio_data->type = it8728;
                break;
+       case IT8771E_DEVID:
+               sio_data->type = it8771;
+               break;
+       case IT8772E_DEVID:
+               sio_data->type = it8772;
+               break;
        case IT8782F_DEVID:
                sio_data->type = it8782;
                break;
@@ -1825,10 +1853,11 @@ static int __init it87_find(unsigned short *address,
 
                reg = superio_inb(IT87_SIO_GPIO3_REG);
                if (sio_data->type == it8721 || sio_data->type == it8728 ||
+                   sio_data->type == it8771 || sio_data->type == it8772 ||
                    sio_data->type == it8782) {
                        /*
                         * IT8721F/IT8758E, and IT8782F don't have VID pins
-                        * at all, not sure about the IT8728F.
+                        * at all, not sure about the IT8728F and compatibles.
                         */
                        sio_data->skip_vid = 1;
                } else {
@@ -1882,7 +1911,9 @@ static int __init it87_find(unsigned short *address,
                if (reg & (1 << 0))
                        sio_data->internal |= (1 << 0);
                if ((reg & (1 << 1)) || sio_data->type == it8721 ||
-                   sio_data->type == it8728)
+                   sio_data->type == it8728 ||
+                   sio_data->type == it8771 ||
+                   sio_data->type == it8772)
                        sio_data->internal |= (1 << 1);
 
                /*