From fa69afd3c224252890cb30864dc648d1399dd9fe 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 14 This is patch 14 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 1: remove w83697hf_select_wd_register() and w83697hf_unselect_wd_register() functions). - Make sure that the watchdog device is stopped as soon as we found it. Signed-off-by: Samuel Tardieu Signed-off-by: Wim Van Sebroeck --- drivers/char/watchdog/w83697hf_wdt.c | 27 ++++++--------------------- 1 file changed, 6 insertions(+), 21 deletions(-) (limited to 'drivers/char/watchdog') diff --git a/drivers/char/watchdog/w83697hf_wdt.c b/drivers/char/watchdog/w83697hf_wdt.c index 2b3ce434c19..1ea43bf2c35 100644 --- a/drivers/char/watchdog/w83697hf_wdt.c +++ b/drivers/char/watchdog/w83697hf_wdt.c @@ -120,29 +120,14 @@ w83697hf_deselect_wdt(void) w83697hf_lock(); } -static void -w83697hf_select_wd_register(void) -{ - w83697hf_unlock(); - - w83697hf_set_reg(0x29, 0x20); /* Set pin 119 to WDTO# mode (= CR29, WDT0) */ - - w83697hf_set_reg(0x07, 0x08); /* Switch to logic device 8 (GPIO2) */ - w83697hf_set_reg(0x30, 0x01); /* Enable timer/activate GPIO2 via bit 0 */ -} - -static void -w83697hf_unselect_wd_register(void) -{ - w83697hf_lock(); -} - static void w83697hf_init(void) { unsigned char t; - w83697hf_select_wd_register(); + w83697hf_select_wdt(); + + w83697hf_set_reg(0x29, 0x20); /* Set pin 119 to WDTO# mode (= CR29, WDT0) */ t = w83697hf_get_reg(0xF3); /* Read CRF3 */ if (t != 0) { @@ -153,7 +138,7 @@ w83697hf_init(void) t&=~0x0C; /* set second mode & disable keyboard turning off watchdog */ w83697hf_set_reg(0xF4, t); /* Write back to CRF4 */ - w83697hf_unselect_wd_register(); + w83697hf_deselect_wdt(); } static int @@ -412,6 +397,8 @@ wdt_init(void) goto out; found: + w83697hf_init(); + wdt_disable(); /* Disable watchdog until first use */ if (wdt_set_heartbeat(timeout)) { wdt_set_heartbeat(WATCHDOG_TIMEOUT); @@ -419,8 +406,6 @@ found: WATCHDOG_TIMEOUT); } - w83697hf_init(); - ret = register_reboot_notifier(&wdt_notifier); if (ret != 0) { printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n", -- cgit v1.2.3