xref: /openbmc/linux/drivers/watchdog/wd501p.h (revision 6197e5b7)
1 /* SPDX-License-Identifier: GPL-1.0+ */
2 /*
3  *	Industrial Computer Source WDT500/501 driver
4  *
5  *	(c) Copyright 1995	CymruNET Ltd
6  *				Innovation Centre
7  *				Singleton Park
8  *				Swansea
9  *				Wales
10  *				UK
11  *				SA2 8PP
12  *
13  *	http://www.cymru.net
14  *
15  *	Release 0.04.
16  */
17 
18 
19 #define WDT_COUNT0		(io+0)
20 #define WDT_COUNT1		(io+1)
21 #define WDT_COUNT2		(io+2)
22 #define WDT_CR			(io+3)
23 #define WDT_SR			(io+4)	/* Start buzzer on PCI write */
24 #define WDT_RT			(io+5)	/* Stop buzzer on PCI write */
25 #define WDT_BUZZER		(io+6)	/* PCI only: rd=disable, wr=enable */
26 #define WDT_DC			(io+7)
27 
28 /* The following are only on the PCI card, they're outside of I/O space on
29  * the ISA card: */
30 #define WDT_CLOCK		(io+12)	/* COUNT2: rd=16.67MHz, wr=2.0833MHz */
31 /* inverted opto isolated reset output: */
32 #define WDT_OPTONOTRST		(io+13)	/* wr=enable, rd=disable */
33 /* opto isolated reset output: */
34 #define WDT_OPTORST		(io+14)	/* wr=enable, rd=disable */
35 /* programmable outputs: */
36 #define WDT_PROGOUT		(io+15)	/* wr=enable, rd=disable */
37 
38 							 /* FAN 501 500 */
39 #define WDC_SR_WCCR		1	/* Active low */ /*  X   X   X  */
40 #define WDC_SR_TGOOD		2			 /*  X   X   -  */
41 #define WDC_SR_ISOI0		4			 /*  X   X   X  */
42 #define WDC_SR_ISII1		8			 /*  X   X   X  */
43 #define WDC_SR_FANGOOD		16			 /*  X   -   -  */
44 #define WDC_SR_PSUOVER		32	/* Active low */ /*  X   X   -  */
45 #define WDC_SR_PSUUNDR		64	/* Active low */ /*  X   X   -  */
46 #define WDC_SR_IRQ		128	/* Active low */ /*  X   X   X  */
47 
48