mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 22:50:57 +07:00
452fafed83
The omap watchdog hardware is able to read the watchdog timer counter register. This implements this functionality in the omap_wdt driver, so one is can read the time until the watchdog will trigger the reset in seconds using WDIOC_GETTIMELEFT. Signed-off-by: Lars Poeschel <poeschel@lemonage.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
56 lines
2.2 KiB
C
56 lines
2.2 KiB
C
/*
|
|
* linux/drivers/char/watchdog/omap_wdt.h
|
|
*
|
|
* BRIEF MODULE DESCRIPTION
|
|
* OMAP Watchdog timer register definitions
|
|
*
|
|
* Copyright (C) 2004 Texas Instruments.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef _OMAP_WATCHDOG_H
|
|
#define _OMAP_WATCHDOG_H
|
|
|
|
#define OMAP_WATCHDOG_REV (0x00)
|
|
#define OMAP_WATCHDOG_SYS_CONFIG (0x10)
|
|
#define OMAP_WATCHDOG_STATUS (0x14)
|
|
#define OMAP_WATCHDOG_CNTRL (0x24)
|
|
#define OMAP_WATCHDOG_CRR (0x28)
|
|
#define OMAP_WATCHDOG_LDR (0x2c)
|
|
#define OMAP_WATCHDOG_TGR (0x30)
|
|
#define OMAP_WATCHDOG_WPS (0x34)
|
|
#define OMAP_WATCHDOG_SPR (0x48)
|
|
|
|
/* Using the prescaler, the OMAP watchdog could go for many
|
|
* months before firing. These limits work without scaling,
|
|
* with the 60 second default assumed by most tools and docs.
|
|
*/
|
|
#define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */
|
|
#define TIMER_MARGIN_DEFAULT 60 /* 60 secs */
|
|
#define TIMER_MARGIN_MIN 1
|
|
|
|
#define PTV 0 /* prescale */
|
|
#define GET_WLDR_VAL(secs) (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1)
|
|
#define GET_WCCR_SECS(val) ((0xffffffff - (val) + 1) / (32768/(1<<PTV)))
|
|
|
|
#endif /* _OMAP_WATCHDOG_H */
|