From b7b9868ba6f528d60e5869b4a6aad1fe49838b03 Mon Sep 17 00:00:00 2001 From: Samuel Tardieu Date: Thu, 7 Sep 2006 11:57:00 +0200 Subject: [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 Signed-off-by: Wim Van Sebroeck --- drivers/char/watchdog/w83697hf_wdt.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/char/watchdog/w83697hf_wdt.c b/drivers/char/watchdog/w83697hf_wdt.c index 1ea43bf..78b6540 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(); } -- cgit v1.1