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authorSamuel Tardieu <sam@rfc1149.net>2006-09-07 11:57:00 +0200
committerWim Van Sebroeck <wim@iguana.be>2006-10-04 22:46:11 +0200
commitb7b9868ba6f528d60e5869b4a6aad1fe49838b03 (patch)
treea362f6c67867cdaed94868260b14d62e3359fe02 /drivers/char
parentfa69afd3c224252890cb30864dc648d1399dd9fe (diff)
[WATCHDOG] w83697hf/hg WDT driver - patch 15
This is patch 15 in the series of patches that converts Marcus Junker's w83697hf watchdog driver to Samuel Tardieau's w83697hf/hg watchdog driver. This patch contains following changes: - Clean-up initialization code - part 2: * the line reading "set second mode & disable keyboard ..." is plain wrong, the register being manipulated (CRF4) is the counter itself, not the control byte (CRF3) -- looks like it has been copied from another driver. * I think garbage is being written in CRF3 (the control word) as the timeout value is being stored in this register (such as 60 for 60 seconds). * We only want to set pin 119 to WDTO# mode and leave the rest of CR29 like it is. * Set count mode to seconds and not minutes. Signed-off-by: Samuel Tardieu <sam@rfc1149.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/watchdog/w83697hf_wdt.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/char/watchdog/w83697hf_wdt.c b/drivers/char/watchdog/w83697hf_wdt.c
index 1ea43bf2c35..78b6540e874 100644
--- a/drivers/char/watchdog/w83697hf_wdt.c
+++ b/drivers/char/watchdog/w83697hf_wdt.c
@@ -123,20 +123,18 @@ w83697hf_deselect_wdt(void)
static void
w83697hf_init(void)
{
- unsigned char t;
+ unsigned char bbuf;
w83697hf_select_wdt();
- w83697hf_set_reg(0x29, 0x20); /* Set pin 119 to WDTO# mode (= CR29, WDT0) */
+ bbuf = w83697hf_get_reg(0x29);
+ bbuf &= ~0x60;
+ bbuf |= 0x20;
+ w83697hf_set_reg(0x29, bbuf); /* Set pin 119 to WDTO# mode (= CR29, WDT0) */
- t = w83697hf_get_reg(0xF3); /* Read CRF3 */
- if (t != 0) {
- printk (KERN_INFO PFX "Watchdog already running. Resetting timeout to %d sec\n", timeout);
- w83697hf_set_reg(0xF3, timeout); /* Write new timeout */
- }
- t = w83697hf_get_reg(0xF4); /* Read CRF4 */
- t&=~0x0C; /* set second mode & disable keyboard turning off watchdog */
- w83697hf_set_reg(0xF4, t); /* Write back to CRF4 */
+ bbuf = w83697hf_get_reg(0xF3);
+ bbuf &= ~0x04;
+ w83697hf_set_reg(0xF3, bbuf); /* Count mode is seconds */
w83697hf_deselect_wdt();
}