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watchdog: w83627hf_wdt: Add support for NCT6791 and NCT6792 

The watchdog functionality in both chips is almost identical to NCT6779.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
hifive-unleashed-5.1
Guenter Roeck 2015-01-26 08:53:56 -08:00 committed by Wim Van Sebroeck
parent 1cc7495c60
commit a77841d59e
2 changed files with 15 additions and 1 deletions
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2
drivers/watchdog/Kconfig
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@ -1015,6 +1015,8 @@ config W83627HF_WDT
NCT6775
NCT6776
NCT6779
NCT6791
NCT6792
This watchdog simply watches your kernel to make sure it doesn't
freeze, and if it does, it reboots your computer after a certain

14
drivers/watchdog/w83627hf_wdt.c
View File

@ -50,7 +50,7 @@ static int cr_wdt_control; /* WDT control register */
enum chips { w83627hf, w83627s, w83697hf, w83697ug, w83637hf, w83627thf,
w83687thf, w83627ehf, w83627dhg, w83627uhg, w83667hg, w83627dhg_p,
w83667hg_b, nct6775, nct6776, nct6779 };
w83667hg_b, nct6775, nct6776, nct6779, nct6791, nct6792 };
static int timeout; /* in seconds */
module_param(timeout, int, 0);
@ -95,6 +95,8 @@ MODULE_PARM_DESC(early_disable, "Disable watchdog at boot time (default=0)");
#define NCT6775_ID 0xb4
#define NCT6776_ID 0xc3
#define NCT6779_ID 0xc5
#define NCT6791_ID 0xc8
#define NCT6792_ID 0xc9
#define W83627HF_WDT_TIMEOUT 0xf6
#define W83697HF_WDT_TIMEOUT 0xf4
@ -195,6 +197,8 @@ static int w83627hf_init(struct watchdog_device *wdog, enum chips chip)
case nct6775:
case nct6776:
case nct6779:
case nct6791:
case nct6792:
/*
* These chips have a fixed WDTO# output pin (W83627UHG),
* or support more than one WDTO# output pin.
@ -395,6 +399,12 @@ static int wdt_find(int addr)
case NCT6779_ID:
ret = nct6779;
break;
case NCT6791_ID:
ret = nct6791;
break;
case NCT6792_ID:
ret = nct6792;
break;
case 0xff:
ret = -ENODEV;
break;
@ -428,6 +438,8 @@ static int __init wdt_init(void)
"NCT6775",
"NCT6776",
"NCT6779",
"NCT6791",
"NCT6792",
};
wdt_io = 0x2e;