diff options
| author | Wim Van Sebroeck <wim@iguana.be> | 2006-01-09 21:56:09 +0100 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2006-02-12 14:46:32 +0100 |
| commit | 8f0235dccc3f7bffc32abcef2aec3d1b15c61927 (patch) | |
| tree | 22215221b708dcc71aba27525f671f1298a8657b /drivers/char | |
| parent | a2be8786006ec0d21dcb1d322fc480b85ea82c66 (diff) | |
| download | kernel_samsung_smdk4412-8f0235dccc3f7bffc32abcef2aec3d1b15c61927.zip kernel_samsung_smdk4412-8f0235dccc3f7bffc32abcef2aec3d1b15c61927.tar.gz kernel_samsung_smdk4412-8f0235dccc3f7bffc32abcef2aec3d1b15c61927.tar.bz2 | |
[WATCHDOG] pcwd.c Control Status #2 patch
Add Control Status #2 bits (with defines)
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/watchdog/pcwd.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/char/watchdog/pcwd.c b/drivers/char/watchdog/pcwd.c index 1112ec8..0635cd7 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; } |