[linux-2.6-block.git] / drivers / watchdog / omap_wdt.h

/*
 *  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 OMAP1610_WATCHDOG_BASE		0xfffeb000
#define OMAP2420_WATCHDOG_BASE		0x48022000	/*WDT Timer 2 */

#ifdef CONFIG_ARCH_OMAP24XX
#define OMAP_WATCHDOG_BASE 		OMAP2420_WATCHDOG_BASE
#else
#define OMAP_WATCHDOG_BASE 		OMAP1610_WATCHDOG_BASE
#define RM_RSTST_WKUP			0
#endif

#define OMAP_WATCHDOG_REV		(OMAP_WATCHDOG_BASE + 0x00)
#define OMAP_WATCHDOG_SYS_CONFIG	(OMAP_WATCHDOG_BASE + 0x10)
#define OMAP_WATCHDOG_STATUS		(OMAP_WATCHDOG_BASE + 0x14)
#define OMAP_WATCHDOG_CNTRL		(OMAP_WATCHDOG_BASE + 0x24)
#define OMAP_WATCHDOG_CRR		(OMAP_WATCHDOG_BASE + 0x28)
#define OMAP_WATCHDOG_LDR		(OMAP_WATCHDOG_BASE + 0x2c)
#define OMAP_WATCHDOG_TGR		(OMAP_WATCHDOG_BASE + 0x30)
#define OMAP_WATCHDOG_WPS		(OMAP_WATCHDOG_BASE + 0x34)
#define OMAP_WATCHDOG_SPR		(OMAP_WATCHDOG_BASE + 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)

#endif				/* _OMAP_WATCHDOG_H */
Commit	Line	Data
7768a13c KS	1	/*
	2	* linux/drivers/char/watchdog/omap_wdt.h
	3	*
	4	* BRIEF MODULE DESCRIPTION
	5	* OMAP Watchdog timer register definitions
	6	*
	7	* Copyright (C) 2004 Texas Instruments.
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the
	11	* Free Software Foundation; either version 2 of the License, or (at your
	12	* option) any later version.
	13	*
	14	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
	15	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	16	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
	17	* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
	20	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
	21	* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	24	*
	25	* You should have received a copy of the GNU General Public License along
	26	* with this program; if not, write to the Free Software Foundation, Inc.,
	27	* 675 Mass Ave, Cambridge, MA 02139, USA.
	28	*/
	29
	30	#ifndef _OMAP_WATCHDOG_H
	31	#define _OMAP_WATCHDOG_H
	32
	33	#define OMAP1610_WATCHDOG_BASE 0xfffeb000
	34	#define OMAP2420_WATCHDOG_BASE 0x48022000 /WDT Timer 2 /
	35
	36	#ifdef CONFIG_ARCH_OMAP24XX
	37	#define OMAP_WATCHDOG_BASE OMAP2420_WATCHDOG_BASE
	38	#else
	39	#define OMAP_WATCHDOG_BASE OMAP1610_WATCHDOG_BASE
	40	#define RM_RSTST_WKUP 0
	41	#endif
	42
	43	#define OMAP_WATCHDOG_REV (OMAP_WATCHDOG_BASE + 0x00)
	44	#define OMAP_WATCHDOG_SYS_CONFIG (OMAP_WATCHDOG_BASE + 0x10)
	45	#define OMAP_WATCHDOG_STATUS (OMAP_WATCHDOG_BASE + 0x14)
	46	#define OMAP_WATCHDOG_CNTRL (OMAP_WATCHDOG_BASE + 0x24)
	47	#define OMAP_WATCHDOG_CRR (OMAP_WATCHDOG_BASE + 0x28)
	48	#define OMAP_WATCHDOG_LDR (OMAP_WATCHDOG_BASE + 0x2c)
	49	#define OMAP_WATCHDOG_TGR (OMAP_WATCHDOG_BASE + 0x30)
	50	#define OMAP_WATCHDOG_WPS (OMAP_WATCHDOG_BASE + 0x34)
	51	#define OMAP_WATCHDOG_SPR (OMAP_WATCHDOG_BASE + 0x48)
	52
	53	/* Using the prescaler, the OMAP watchdog could go for many
	54	* months before firing. These limits work without scaling,
	55	* with the 60 second default assumed by most tools and docs.
	56	*/
	57	#define TIMER_MARGIN_MAX (24 * 60 * 60) /* 1 day */
	58	#define TIMER_MARGIN_DEFAULT 60 /* 60 secs */
	59	#define TIMER_MARGIN_MIN 1
	60
	61	#define PTV 0 /* prescale */
	62	#define GET_WLDR_VAL(secs) (0xffffffff - ((secs) * (32768/(1<<PTV))) + 1)
	63
	64	#endif /* _OMAP_WATCHDOG_H */