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: Knud Poulsen <knpo@ieee.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
index 016bd93..f650e89d 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_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 @@
"f71869",
"f71882fg",
"f71889fg",
+ "f81865",
};
/* Super-I/O Function prototypes */
@@ -360,6 +365,11 @@
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 @@
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 @@
/* 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);