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[WATCHDOG] pcwd.c Control Status #2 patch

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Add Control Status #2 bits (with defines)

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Wim Van Sebroeck 2006-01-09 21:56:09 +01:00
parent a2be878600
commit 8f0235dccc
1 changed files with 13 additions and 11 deletions
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24
drivers/char/watchdog/pcwd.c
View file

@ -87,22 +87,24 @@
#define PCWD_REVISION_C 2
/*
* These are the defines that describe the control status #1 bits for the
* PC Watchdog card, revision A.
*/
* These are the defines that describe the control status bits for the
* PCI-PC Watchdog card.
*/
/* Port 1 : Control Status #1 for the PC Watchdog card, revision A. */
#define WD_WDRST 0x01 /* Previously reset state */
#define WD_T110 0x02 /* Temperature overheat sense */
#define WD_HRTBT 0x04 /* Heartbeat sense */
#define WD_RLY2 0x08 /* External relay triggered */
#define WD_SRLY2 0x80 /* Software external relay triggered */
/*
* These are the defines that describe the control status #1 bits for the
* PC Watchdog card, revision C.
*/
/* Port 1 : Control Status #1 for the PC Watchdog card, revision C. */
#define WD_REVC_WTRP 0x01 /* Watchdog Trip status */
#define WD_REVC_HRBT 0x02 /* Watchdog Heartbeat */
#define WD_REVC_TTRP 0x04 /* Temperature Trip status */
/* Port 2 : Control Status #2 */
#define WD_WDIS 0x10 /* Watchdog Disabled */
#define WD_ENTP 0x20 /* Watchdog Enable Temperature Trip */
#define WD_SSEL 0x40 /* Watchdog Switch Select (1:SW1 <-> 0:SW2) */
#define WD_WCMD 0x80 /* Watchdog Command Mode */
/* max. time we give an ISA watchdog card to process a command */
/* 500ms for each 4 bit response (according to spec.) */
@ -166,7 +168,7 @@ static int send_isa_command(int cmd)
int port0, last_port0; /* Double read for stabilising */
/* The WCMD bit must be 1 and the command is only 4 bits in size */
control_status = (cmd & 0x0F) | 0x80;
control_status = (cmd & 0x0F) | WD_WCMD;
outb_p(control_status, pcwd_private.io_addr + 2);
udelay(ISA_COMMAND_TIMEOUT);
@ -267,7 +269,7 @@ static int pcwd_start(void)
udelay(ISA_COMMAND_TIMEOUT);
stat_reg = inb_p(pcwd_private.io_addr + 2);
spin_unlock(&pcwd_private.io_lock);
if (stat_reg & 0x10) {
if (stat_reg & WD_WDIS) {
printk(KERN_INFO PFX "Could not start watchdog\n");
return -EIO;
}
@ -291,7 +293,7 @@ static int pcwd_stop(void)
udelay(ISA_COMMAND_TIMEOUT);
stat_reg = inb_p(pcwd_private.io_addr + 2);
spin_unlock(&pcwd_private.io_lock);
if ((stat_reg & 0x10) == 0) {
if ((stat_reg & WD_WDIS) == 0) {
printk(KERN_INFO PFX "Could not stop watchdog\n");
return -EIO;
}