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Commit 4ee07157 authored by Guenter Roeck's avatar Guenter Roeck
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hwmon: (it87) Add support for IT8790E 



IT8790E is a super-IO chip with three fan tachometers. It is mostly
compatible to IT8728F, but only supports three fan tachometers
instead of five.

Reviewed-by: default avatarJean Delvare <jdelvare@suse.de>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 7f5726c3

Documentation/hwmon/it87

+10 −3
Original line number Diff line number Diff line
@@ -58,6 +58,10 @@ Supported chips: 
    Prefix: 'it8786'

    Addresses scanned: from Super I/O config space (8 I/O ports)

    Datasheet: Not publicly available

  * IT8790E

    Prefix: 'it8790'

    Addresses scanned: from Super I/O config space (8 I/O ports)

    Datasheet: Not publicly available

  * SiS950   [clone of IT8705F]

    Prefix: 'it87'

    Addresses scanned: from Super I/O config space (8 I/O ports)
@@ -102,9 +106,10 @@ motherboard models. 
Description

-----------



This driver implements support for the IT8603E, IT8623E, IT8705F, IT8712F,

IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E, IT8771E,

IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E, and SiS950 chips.

This driver implements support for the IT8603E, IT8623E, IT8705F,

IT8712F, IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E,

IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E, IT8790E, and SiS950

chips.



These chips are 'Super I/O chips', supporting floppy disks, infrared ports,

joysticks and other miscellaneous stuff. For hardware monitoring, they
@@ -145,6 +150,8 @@ The IT8603E/IT8623E is a custom design, hardware monitoring part is similar to 
IT8728F. It only supports 16-bit fan mode, the full speed mode of the

fan is not supported (value 0 of pwmX_enable).



The IT8790E supports up to 3 fans. 16-bit fan mode is always enabled.



Temperatures are measured in degrees Celsius. An alarm is triggered once

when the Overtemperature Shutdown limit is crossed.

drivers/hwmon/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -600,8 +600,8 @@ config SENSORS_IT87 
	help

	  If you say yes here you get support for ITE IT8705F, IT8712F,

	  IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E,

	  IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E,

	  and IT8603E sensor chips, and the SiS950 clone.

	  IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E, IT8790E,

	  IT8603E, and IT8623E 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

+13 −1
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 
 *            IT8782F  Super I/O chip w/LPC interface

 *            IT8783E/F Super I/O chip w/LPC interface

 *            IT8786E  Super I/O chip w/LPC interface

 *            IT8790E  Super I/O chip w/LPC interface

 *            Sis950   A clone of the IT8705F

 *

 *  Copyright (C) 2001 Chris Gauthron
@@ -68,7 +69,7 @@ 
#define DRVNAME "it87"



enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771,

	     it8772, it8781, it8782, it8783, it8786, it8603 };

	     it8772, it8781, it8782, it8783, it8786, it8790, it8603 };



static unsigned short force_id;

module_param(force_id, ushort, 0);
@@ -152,6 +153,7 @@ static inline void superio_exit(void) 
#define IT8782F_DEVID 0x8782

#define IT8783E_DEVID 0x8783

#define IT8786E_DEVID 0x8786

#define IT8790E_DEVID 0x8790

#define IT8603E_DEVID 0x8603

#define IT8623E_DEVID 0x8623

#define IT87_ACT_REG  0x30
@@ -359,6 +361,13 @@ static const struct it87_devices it87_devices[] = { 
		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL,

		.peci_mask = 0x07,

	},

	[it8790] = {

		.name = "it8790",

		.suffix = "E",

		.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS

		  | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL,

		.peci_mask = 0x07,

	},

	[it8603] = {

		.name = "it8603",

		.suffix = "E",
@@ -1834,6 +1843,9 @@ static int __init it87_find(unsigned short *address, 
	case IT8786E_DEVID:

		sio_data->type = it8786;

		break;

	case IT8790E_DEVID:

		sio_data->type = it8790;

		break;

	case IT8603E_DEVID:

	case IT8623E_DEVID:

		sio_data->type = it8603;