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[WATCHDOG] w83697hf/hg WDT driver - patch 11 

This is patch 11 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:
 - Add w83697hf_select_wdt() and w83697hf_deselect_wdt()
   so that the start/stop/ping code can directly talk to
   the watchdog.

Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Samuel Tardieu 2006-09-07 11:57:00 +02:00 committed by Wim Van Sebroeck
parent c81b299625
commit a7933e05d4
1 changed files with 15 additions and 2 deletions
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17
drivers/char/watchdog/w83697hf_wdt.c
View File

@ -101,6 +101,19 @@ w83697hf_set_reg(unsigned char reg, unsigned char data)
outb_p(data, W83697HF_EFDR);
}
static void
w83697hf_select_wdt(void)
{
w83697hf_unlock();
w83697hf_set_reg(0x07, 0x08); /* Switch to logic device 8 (GPIO2) */
}
static inline void
w83697hf_deselect_wdt(void)
{
w83697hf_lock();
}
static void
w83697hf_select_wd_register(void)
{
@ -142,11 +155,11 @@ wdt_ctrl(int timeout)
{
spin_lock(&io_lock);
w83697hf_select_wd_register();
w83697hf_select_wdt();
w83697hf_set_reg(0xF4, timeout); /* Write Timeout counter to CRF4 */
w83697hf_unselect_wd_register();
w83697hf_deselect_wdt();
spin_unlock(&io_lock);
}