1 /* 2 * arch/arm/mach-at91/include/mach/at91_rtt.h 3 * 4 * Copyright (C) 2007 Andrew Victor 5 * Copyright (C) 2007 Atmel Corporation. 6 * 7 * Real-time Timer (RTT) - System peripherals regsters. 8 * Based on AT91SAM9261 datasheet revision D. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 */ 15 16 #ifndef AT91_RTT_H 17 #define AT91_RTT_H 18 19 #define AT91_RTT_MR 0x00 /* Real-time Mode Register */ 20 #define AT91_RTT_RTPRES (0xffff << 0) /* Real-time Timer Prescaler Value */ 21 #define AT91_RTT_ALMIEN (1 << 16) /* Alarm Interrupt Enable */ 22 #define AT91_RTT_RTTINCIEN (1 << 17) /* Real Time Timer Increment Interrupt Enable */ 23 #define AT91_RTT_RTTRST (1 << 18) /* Real Time Timer Restart */ 24 25 #define AT91_RTT_AR 0x04 /* Real-time Alarm Register */ 26 #define AT91_RTT_ALMV (0xffffffff) /* Alarm Value */ 27 28 #define AT91_RTT_VR 0x08 /* Real-time Value Register */ 29 #define AT91_RTT_CRTV (0xffffffff) /* Current Real-time Value */ 30 31 #define AT91_RTT_SR 0x0c /* Real-time Status Register */ 32 #define AT91_RTT_ALMS (1 << 0) /* Real-time Alarm Status */ 33 #define AT91_RTT_RTTINC (1 << 1) /* Real-time Timer Increment */ 34 35 #endif 36