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Commit b0636707 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

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: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarJean Delvare <khali@linux-fr.org>
parent 5372d2d7

Documentation/hwmon/it87

+12 −4
Original line number Diff line number Diff line
@@ -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.

drivers/hwmon/Kconfig

+2 −1
Original line number Diff line number Diff line
@@ -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.

drivers/hwmon/it87.c

+35 −4
Original line number Diff line number Diff line
@@ -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);



		/*