tid_8xx_def.h

mpc8xx driver(led), based on tqm8

/***********************************************************************
 *
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, [e-mail].
 * Jean-Jacques Germond, Fr閐閞ic Soulier, Christian Batt; Alcatel
 * C/O [e-mail]
 *
 * All rights reserved.
 *
 * This code is free software; you can redistribute it and/or
 * modify it under the terms of the GNU *Library* General Public License
 * as published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This code is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * *Library* General Public License for more details.
 *
 * You should have received a copy of the GNU *Library* General Public
 * License along with this program (see file COPYING.LIB); if not,
 * write to the Free Software Foundation, Inc., 675 Mass Ave,
 * Cambridge, MA 02139, USA.
 *
 ***********************************************************************/

/*
 * Definitions to access the CPM Timer registers
 * See 8xx_immap.h for Internal Memory Map layout,
 * and commproc.h for CPM Interrupt vectors (aka "IRQ"s)
 */

typedef struct tid_8xx_cpmtimer_s {
  ushort	*tgcrp;		/* Pointer to Timer Global Config Reg.	*/
  ushort	*tmrp;		/* Pointer to Timer Mode Register	*/
  ushort	*trrp;		/* Pointer to Timer Reference Register	*/
  ushort	*tcrp;		/* Pointer to Timer Capture Register	*/
  ushort	*tcnp;		/* Pointer to Timer Counter Register	*/
  ushort	*terp;		/* Pointer to Timer Event Register	*/
  int		 cpm_vec;	/* CPM Interrupt Vector for this timer	*/
} tid_8xx_cpmtimer_t;

/* Hack to provide a default clock rate. You might want to
 * define TQM_CLOCKRATE at the makefile level in the CFLAGS.
 */
#ifndef TQM_CLOCKRATE
#  define TQM_CLOCKRATE 64
#endif


#define	CPMT_CLOCK_DIV		16
#define	CPMT_MAX_PRESCALER	256
#define CPMT_MAX_REFERENCE	65535	/* max. unsigned short */

#define	CPMT_MAX_TICKS		(CPMT_MAX_REFERENCE * CPMT_MAX_PRESCALER)
#define	CPMT_MAX_TICKS_WITH_DIV	(CPMT_MAX_REFERENCE * CPMT_MAX_PRESCALER * CPMT_CLOCK_DIV)
#define	CPMT_MAX_INTERVAL	(CPMT_MAX_TICKS_WITH_DIV / TQM_CLOCKRATE)

/* For now: always use max. prescaler value */
#define	CPMT_PRESCALER		(CPMT_MAX_PRESCALER)

/* CPM Timer Event Register Bits */
#define	CPMT_EVENT_CAP		0x0001	/* Capture Event		*/
#define	CPMT_EVENT_REF		0x0002	/* Reference Counter Event	*/

/* CPM Timer Global Config Register */
#define	CPMT_GCR_RST		0x0001	/* Reset  Timer			*/
#define	CPMT_GCR_STP		0x0002	/* Stop   Timer			*/
#define	CPMT_GCR_FRZ		0x0004	/* Freeze Timer			*/
#define	CPMT_GCR_GM_CAS		0x0008	/* Gate Mode / Cascade Timers	*/
#define	CPMT_GCR_MASK		(CPMT_GCR_RST|CPMT_GCR_STP|CPMT_GCR_FRZ|CPMT_GCR_GM_CAS)

/* CPM Timer Mode register */
#define	CPMT_MR_GE		0x0001	/* Gate Enable			*/
#define	CPMT_MR_ICLK_CASC	0x0000	/* Clock internally cascaded	*/
#define	CPMT_MR_ICLK_CLK	0x0002	/* Clock = system clock		*/
#define	CPMT_MR_ICLK_CLKDIV	0x0004	/* Clock = system clock / 16	*/
#define	CPMT_MR_ICLK_TIN	0x0006	/* Clock = TINx signal		*/
#define	CPMT_MR_FRR		0x0008	/* Free Run / Restart		*/
#define	CPMT_MR_ORI		0x0010	/* Out. Reference Interrupt En.	*/
#define	CPMT_MR_OM		0x0020	/* Output Mode			*/
#define	CPMT_MR_CE_DIS		0x0000	/* Capture/Interrupt disabled	*/
#define	CPMT_MR_CE_RISE		0x0040	/* Capt./Interr. on rising  TIN	*/
#define CPMT_MR_CE_FALL		0x0080	/* Capt./Interr. on falling TIN	*/
#define	CPMT_MR_CE_ANY		0x00C0	/* Capt./Interr. on any TIN edge*/