Commit ca2fc5ef authored by Jaret Cantu's avatar Jaret Cantu Committed by Wim Van Sebroeck
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watchdog: f71808e_wdt: Add F81803 support



This adds watchdog support for the Fintek F81803 Super I/O chip.

Testing was done on the Seneca XK-QUAD.

Signed-off-by: default avatarJaret Cantu <jaret.cantu@timesys.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20190912175550.9340-1-jaret.cantu@timesys.com


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent 52a14214
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+2 −2
Original line number Diff line number Diff line
@@ -1043,8 +1043,8 @@ config F71808E_WDT
	depends on X86
	help
	  This is the driver for the hardware watchdog on the Fintek F71808E,
	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81865 and F81866
	  Super I/O controllers.
	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
	  F81866 Super I/O controllers.

	  You can compile this driver directly into the kernel, or use
	  it as a module.  The module will be called f71808e_wdt.
+16 −1
Original line number Diff line number Diff line
@@ -31,8 +31,10 @@
#define SIO_REG_DEVID		0x20	/* Device ID (2 bytes) */
#define SIO_REG_DEVREV		0x22	/* Device revision */
#define SIO_REG_MANID		0x23	/* Fintek ID (2 bytes) */
#define SIO_REG_CLOCK_SEL	0x26	/* Clock select */
#define SIO_REG_ROM_ADDR_SEL	0x27	/* ROM address select */
#define SIO_F81866_REG_PORT_SEL	0x27	/* F81866 Multi-Function Register */
#define SIO_REG_TSI_LEVEL_SEL	0x28	/* TSI Level select */
#define SIO_REG_MFUNCT1		0x29	/* Multi function select 1 */
#define SIO_REG_MFUNCT2		0x2a	/* Multi function select 2 */
#define SIO_REG_MFUNCT3		0x2b	/* Multi function select 3 */
@@ -49,6 +51,7 @@
#define SIO_F71869A_ID		0x1007	/* Chipset ID */
#define SIO_F71882_ID		0x0541	/* Chipset ID */
#define SIO_F71889_ID		0x0723	/* Chipset ID */
#define SIO_F81803_ID		0x1210	/* Chipset ID */
#define SIO_F81865_ID		0x0704	/* Chipset ID */
#define SIO_F81866_ID		0x1010	/* Chipset ID */

@@ -108,7 +111,7 @@ 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, f71868, f71869, f71882fg, f71889fg,
	     f81865, f81866};
	     f81803, f81865, f81866};

static const char *f71808e_names[] = {
	"f71808fg",
@@ -118,6 +121,7 @@ static const char *f71808e_names[] = {
	"f71869",
	"f71882fg",
	"f71889fg",
	"f81803",
	"f81865",
	"f81866",
};
@@ -370,6 +374,14 @@ static int watchdog_start(void)
			superio_inb(watchdog.sioaddr, SIO_REG_MFUNCT3) & 0xcf);
		break;

	case f81803:
		/* Enable TSI Level register bank */
		superio_clear_bit(watchdog.sioaddr, SIO_REG_CLOCK_SEL, 3);
		/* Set pin 27 to WDTRST# */
		superio_outb(watchdog.sioaddr, SIO_REG_TSI_LEVEL_SEL, 0x5f &
			superio_inb(watchdog.sioaddr, SIO_REG_TSI_LEVEL_SEL));
		break;

	case f81865:
		/* Set pin 70 to WDTRST# */
		superio_clear_bit(watchdog.sioaddr, SIO_REG_MFUNCT3, 5);
@@ -809,6 +821,9 @@ static int __init f71808e_find(int sioaddr)
		/* Confirmed (by datasheet) not to have a watchdog. */
		err = -ENODEV;
		goto exit;
	case SIO_F81803_ID:
		watchdog.type = f81803;
		break;
	case SIO_F81865_ID:
		watchdog.type = f81865;
		break;