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: Knud Poulsen <knpo@xxxxxxxx> --- drivers/watchdog/f71808e_wdt.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c index 016bd93..f650e89 100644 --- a/drivers/watchdog/f71808e_wdt.c +++ b/drivers/watchdog/f71808e_wdt.c @@ -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 @@ -371,8 +381,13 @@ static int watchdog_start(void) superio_select(watchdog.sioaddr, SIO_F71808FG_LD_WDT); superio_set_bit(watchdog.sioaddr, SIO_REG_ENABLE, 0); - superio_set_bit(watchdog.sioaddr, F71808FG_REG_WDO_CONF, - F71808FG_FLAG_WDOUT_EN); + + 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); superio_set_bit(watchdog.sioaddr, F71808FG_REG_WDT_CONF, F71808FG_FLAG_WD_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); -- 2.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
