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authorWim Van Sebroeck <wim@iguana.be>2006-01-09 21:56:09 +0100
committerWim Van Sebroeck <wim@iguana.be>2006-02-12 14:46:32 +0100
commit8f0235dccc3f7bffc32abcef2aec3d1b15c61927 (patch)
tree22215221b708dcc71aba27525f671f1298a8657b
parenta2be8786006ec0d21dcb1d322fc480b85ea82c66 (diff)
downloadlinux-2.6.34-ux500-8f0235dccc3f7bffc32abcef2aec3d1b15c61927.tar.gz
[WATCHDOG] pcwd.c Control Status #2 patch
Add Control Status #2 bits (with defines) Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
-rw-r--r--drivers/char/watchdog/pcwd.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/char/watchdog/pcwd.c b/drivers/char/watchdog/pcwd.c
index 1112ec8e61f..0635cd72436 100644
--- a/drivers/char/watchdog/pcwd.c
+++ b/drivers/char/watchdog/pcwd.c
@@ -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;
}