Commit 7bc32d29 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (it87) Add support for IT8781F 



IT8781F is mostly compatible to IT8782F. Major difference is that it only
supports four instead of six UART channels, and therefore does not share
the uart6 pins.

Reviewed-by: default avatarJean Delvare <jdelvare@suse.de>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent a0fc74d4

Documentation/hwmon/it87

+13 −9
Original line number Diff line number Diff line
@@ -42,6 +42,10 @@ Supported chips: 
    Prefix: 'it8772'

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

    Datasheet: Not publicly available

  * IT8781F

    Prefix: 'it8781'

    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)
@@ -96,7 +100,7 @@ Description 


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

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

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

IT8772E, IT8781F, 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
@@ -120,11 +124,11 @@ The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E and later IT8712F revisions 
have support for 2 additional fans. The additional fans are supported by the

driver.



The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E, IT8782F, IT8783E/F, and late

IT8712F and IT8705F also have optional 16-bit tachometer counters for fans 1 to

3. This is better (no more fan clock divider mess) but not compatible with the

older chips and revisions. The 16-bit tachometer mode is enabled by the driver

when one of the above chips is detected.

The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E, IT8781F, IT8782F, IT8783E/F,

and late IT8712F and IT8705F also have optional 16-bit tachometer counters

for fans 1 to 3. This is better (no more fan clock divider mess) but not

compatible with the older chips and revisions. The 16-bit tachometer mode

is enabled by the driver when one of the above chips is detected.



The IT8726F is just bit enhanced IT8716F with additional hardware

for AMD power sequencing. Therefore the chip will appear as IT8716F
@@ -156,10 +160,10 @@ inputs can measure voltages between 0 and 4.08 volts, with a resolution of 
0.016 volt (except IT8603E, IT8721F/IT8758E and IT8728F: 0.012 volt.) The

battery voltage in8 does not have limit registers.



On the IT8603E, IT8721F/IT8758E, IT8782F, and IT8783E/F, some voltage inputs

are internal and scaled inside the chip:

On the IT8603E, IT8721F/IT8758E, IT8781F, IT8782F, and IT8783E/F, some

voltage inputs are internal and scaled inside the chip:

* in3 (optional)

* in7 (optional for IT8782F and IT8783E/F)

* in7 (optional for IT8781F, IT8782F, and IT8783E/F)

* in8 (always)

* in9 (relevant for IT8603E only)

The driver handles this transparently so user-space doesn't have to care.

drivers/hwmon/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -599,8 +599,8 @@ 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, IT8782F, IT8783E/F and IT8603E sensor chips,

	  and the SiS950 clone.

	  IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F and IT8603E

	  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

+24 −8
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
 *            IT8758E  Super I/O chip w/LPC interface

 *            IT8771E  Super I/O chip w/LPC interface

 *            IT8772E  Super I/O chip w/LPC interface

 *            IT8781F  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
@@ -66,7 +67,7 @@ 
#define DRVNAME "it87"



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

	     it8772, it8782, it8783, it8603 };

	     it8772, it8781, it8782, it8783, it8603 };



static unsigned short force_id;

module_param(force_id, ushort, 0);
@@ -146,6 +147,7 @@ static inline void superio_exit(void) 
#define IT8728F_DEVID 0x8728

#define IT8771E_DEVID 0x8771

#define IT8772E_DEVID 0x8772

#define IT8781F_DEVID 0x8781

#define IT8782F_DEVID 0x8782

#define IT8783E_DEVID 0x8783

#define IT8603E_DEVID 0x8603
@@ -307,6 +309,12 @@ static const struct it87_devices it87_devices[] = { 
					/* 16 bit fans (HWSensors4, OHM) */

		.peci_mask = 0x07,

	},

	[it8781] = {

		.name = "it8781",

		.features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET

		  | FEAT_TEMP_OLD_PECI,

		.old_peci_mask = 0x4,

	},

	[it8782] = {

		.name = "it8782",

		.features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET
@@ -1761,6 +1769,9 @@ static int __init it87_find(unsigned short *address, 
	case IT8772E_DEVID:

		sio_data->type = it8772;

		break;

	case IT8781F_DEVID:

		sio_data->type = it8781;

		break;

	case IT8782F_DEVID:

		sio_data->type = it8782;

		break;
@@ -1919,10 +1930,11 @@ 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) {

		    sio_data->type == it8781 || sio_data->type == it8782) {

			/*

			 * IT8721F/IT8758E, and IT8782F don't have VID pins

			 * at all, not sure about the IT8728F and compatibles.

			 * IT8721F/IT8758E, IT8728F, IT8772F, IT8781F, and

			 * IT8782F don't have VID pins at all, not sure about

			 * the IT8771F.

			 */

			sio_data->skip_vid = 1;

		} else {
@@ -2147,7 +2159,8 @@ static int it87_probe(struct platform_device *pdev) 
			data->in_scaled |= (1 << 8);	/* in8 is Vbat */

		if (sio_data->internal & (1 << 3))

			data->in_scaled |= (1 << 9);	/* in9 is AVCC */

	} else if (sio_data->type == it8782 || sio_data->type == it8783) {

	} else if (sio_data->type == it8781 || sio_data->type == it8782 ||

		   sio_data->type == it8783) {

		if (sio_data->internal & (1 << 0))

			data->in_scaled |= (1 << 3);	/* in3 is VCC5V */

		if (sio_data->internal & (1 << 1))
@@ -2460,9 +2473,12 @@ static void it87_init_device(struct platform_device *pdev) 
			it87_write_value(data, IT87_REG_FAN_16BIT,

					 tmp | 0x07);

		}

		/* IT8705F, IT8782F, and IT8783E/F only support three fans. */

		if (data->type != it87 && data->type != it8782 &&

		    data->type != it8783) {

		/*

		 * IT8705F, IT8781F, IT8782F, and IT8783E/F only support

		 * three fans.

		 */

		if (data->type != it87 && data->type != it8781 &&

		    data->type != it8782 && data->type != it8783) {

			if (tmp & (1 << 4))

				data->has_fan |= (1 << 3); /* fan4 enabled */

			if (tmp & (1 << 5))