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>
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@ -59,6 +59,7 @@
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#define SIO_F71869A_ID 0x1007 /* Chipset ID */
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#define SIO_F71882_ID 0x0541 /* Chipset ID */
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#define SIO_F71889_ID 0x0723 /* Chipset ID */
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#define SIO_F81865_ID 0x0704 /* Chipset ID */
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#define F71808FG_REG_WDO_CONF 0xf0
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#define F71808FG_REG_WDT_CONF 0xf5
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@ -71,6 +72,9 @@
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#define F71808FG_FLAG_WD_PULSE 4
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#define F71808FG_FLAG_WD_UNIT 3
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#define F81865_REG_WDO_CONF 0xfa
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#define F81865_FLAG_WDOUT_EN 0
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/* Default values */
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#define WATCHDOG_TIMEOUT 60 /* 1 minute default timeout */
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#define WATCHDOG_MAX_TIMEOUT (60 * 255)
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@ -112,7 +116,7 @@ module_param(start_withtimeout, uint, 0);
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MODULE_PARM_DESC(start_withtimeout, "Start watchdog timer on module load with"
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" given initial timeout. Zero (default) disables this feature.");
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enum chips { f71808fg, f71858fg, f71862fg, f71869, f71882fg, f71889fg };
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enum chips { f71808fg, f71858fg, f71862fg, f71869, f71882fg, f71889fg, f81865 };
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static const char *f71808e_names[] = {
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"f71808fg",
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@ -121,6 +125,7 @@ static const char *f71808e_names[] = {
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"f71869",
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"f71882fg",
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"f71889fg",
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"f81865",
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};
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/* Super-I/O Function prototypes */
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@ -360,6 +365,11 @@ static int watchdog_start(void)
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superio_inb(watchdog.sioaddr, SIO_REG_MFUNCT3) & 0xcf);
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break;
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case f81865:
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/* Set pin 70 to WDTRST# */
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superio_clear_bit(watchdog.sioaddr, SIO_REG_MFUNCT3, 5);
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break;
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default:
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/*
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* 'default' label to shut up the compiler and catch
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@ -371,8 +381,13 @@ static int watchdog_start(void)
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superio_select(watchdog.sioaddr, SIO_F71808FG_LD_WDT);
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superio_set_bit(watchdog.sioaddr, SIO_REG_ENABLE, 0);
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superio_set_bit(watchdog.sioaddr, F71808FG_REG_WDO_CONF,
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F71808FG_FLAG_WDOUT_EN);
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if (watchdog.type == f81865)
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superio_set_bit(watchdog.sioaddr, F81865_REG_WDO_CONF,
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F81865_FLAG_WDOUT_EN);
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else
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superio_set_bit(watchdog.sioaddr, F71808FG_REG_WDO_CONF,
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F71808FG_FLAG_WDOUT_EN);
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superio_set_bit(watchdog.sioaddr, F71808FG_REG_WDT_CONF,
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F71808FG_FLAG_WD_EN);
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@ -770,6 +785,9 @@ static int __init f71808e_find(int sioaddr)
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/* Confirmed (by datasheet) not to have a watchdog. */
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err = -ENODEV;
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goto exit;
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case SIO_F81865_ID:
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watchdog.type = f81865;
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break;
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default:
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pr_info("Unrecognized Fintek device: %04x\n",
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(unsigned int)devid);
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