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Commit ea0c03e8 authored by Knud Poulsen's avatar Knud Poulsen Committed by Wim Van Sebroeck
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watchdog: f71808e_wdt: Add F81865 support 

Adds watchdog enable support for Fintek F81865 Super-IO chip to
Fintek wdt driver (f71808e_wdt)

Tested and verified on Lanner LEC-3030 Industrial PC

Datasheet references:
http://www.hardwaresecrets.com/datasheets/F81865_V028P.pdf
http://www.alldatasheet.com/datasheet-pdf/pdf/406317/FINTEK/F81865.html



Signed-off-by: default avatarKnud Poulsen <knpo@ieee.org>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent 46856fab

drivers/watchdog/f71808e_wdt.c

+21 −3
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ 
#define SIO_F71869A_ID		0x1007	/* Chipset ID */

#define SIO_F71882_ID		0x0541	/* Chipset ID */

#define SIO_F71889_ID		0x0723	/* Chipset ID */

#define SIO_F81865_ID		0x0704	/* Chipset ID */



#define F71808FG_REG_WDO_CONF		0xf0

#define F71808FG_REG_WDT_CONF		0xf5
@@ -71,6 +72,9 @@ 
#define F71808FG_FLAG_WD_PULSE		4

#define F71808FG_FLAG_WD_UNIT		3



#define F81865_REG_WDO_CONF		0xfa

#define F81865_FLAG_WDOUT_EN		0



/* Default values */

#define WATCHDOG_TIMEOUT	60	/* 1 minute default timeout */

#define WATCHDOG_MAX_TIMEOUT	(60 * 255)
@@ -112,7 +116,7 @@ module_param(start_withtimeout, uint, 0); 
MODULE_PARM_DESC(start_withtimeout, "Start watchdog timer on module load with"

	" given initial timeout. Zero (default) disables this feature.");



enum chips { f71808fg, f71858fg, f71862fg, f71869, f71882fg, f71889fg };

enum chips { f71808fg, f71858fg, f71862fg, f71869, f71882fg, f71889fg, f81865 };



static const char *f71808e_names[] = {

	"f71808fg",
@@ -121,6 +125,7 @@ static const char *f71808e_names[] = { 
	"f71869",

	"f71882fg",

	"f71889fg",

	"f81865",

};



/* Super-I/O Function prototypes */
@@ -360,6 +365,11 @@ static int watchdog_start(void) 
			superio_inb(watchdog.sioaddr, SIO_REG_MFUNCT3) & 0xcf);

		break;



	case f81865:

		/* Set pin 70 to WDTRST# */

		superio_clear_bit(watchdog.sioaddr, SIO_REG_MFUNCT3, 5);

		break;



	default:

		/*

		 * 'default' label to shut up the compiler and catch
@@ -371,6 +381,11 @@ static int watchdog_start(void) 


	superio_select(watchdog.sioaddr, SIO_F71808FG_LD_WDT);

	superio_set_bit(watchdog.sioaddr, SIO_REG_ENABLE, 0);



	if (watchdog.type == f81865)

		superio_set_bit(watchdog.sioaddr, F81865_REG_WDO_CONF,

				F81865_FLAG_WDOUT_EN);

	else

		superio_set_bit(watchdog.sioaddr, F71808FG_REG_WDO_CONF,

				F71808FG_FLAG_WDOUT_EN);
@@ -770,6 +785,9 @@ static int __init f71808e_find(int sioaddr) 
		/* Confirmed (by datasheet) not to have a watchdog. */

		err = -ENODEV;

		goto exit;

	case SIO_F81865_ID:

		watchdog.type = f81865;

		break;

	default:

		pr_info("Unrecognized Fintek device: %04x\n",

			(unsigned int)devid);