| Alessandro Rubini | 095a460 | 2009-06-29 10:52:37 +0200 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2009 Alessandro Rubini |
| 3 | * |
| 4 | * See file CREDITS for list of people who contributed to this |
| 5 | * project. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 of |
| 10 | * the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 20 | * MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | #ifndef __ASM_ARCH_MTU_H |
| 24 | #define __ASM_ARCH_MTU_H |
| 25 | |
| 26 | /* |
| 27 | * The MTU device hosts four different counters, with 4 set of |
| 28 | * registers. These are register names. |
| 29 | */ |
| 30 | |
| 31 | #define MTU_IMSC 0x00 /* Interrupt mask set/clear */ |
| 32 | #define MTU_RIS 0x04 /* Raw interrupt status */ |
| 33 | #define MTU_MIS 0x08 /* Masked interrupt status */ |
| 34 | #define MTU_ICR 0x0C /* Interrupt clear register */ |
| 35 | |
| 36 | /* per-timer registers take 0..3 as argument */ |
| 37 | #define MTU_LR(x) (0x10 + 0x10 * (x) + 0x00) /* Load value */ |
| 38 | #define MTU_VAL(x) (0x10 + 0x10 * (x) + 0x04) /* Current value */ |
| 39 | #define MTU_CR(x) (0x10 + 0x10 * (x) + 0x08) /* Control reg */ |
| 40 | #define MTU_BGLR(x) (0x10 + 0x10 * (x) + 0x0c) /* At next overflow */ |
| 41 | |
| 42 | /* bits for the control register */ |
| 43 | #define MTU_CRn_ENA 0x80 |
| 44 | #define MTU_CRn_PERIODIC 0x40 /* if 0 = free-running */ |
| 45 | #define MTU_CRn_PRESCALE_MASK 0x0c |
| 46 | #define MTU_CRn_PRESCALE_1 0x00 |
| 47 | #define MTU_CRn_PRESCALE_16 0x04 |
| 48 | #define MTU_CRn_PRESCALE_256 0x08 |
| 49 | #define MTU_CRn_32BITS 0x02 |
| 50 | #define MTU_CRn_ONESHOT 0x01 /* if 0 = wraps reloading from BGLR*/ |
| 51 | |
| 52 | /* Other registers are usual amba/primecell registers, currently not used */ |
| 53 | #define MTU_ITCR 0xff0 |
| 54 | #define MTU_ITOP 0xff4 |
| 55 | |
| 56 | #define MTU_PERIPH_ID0 0xfe0 |
| 57 | #define MTU_PERIPH_ID1 0xfe4 |
| 58 | #define MTU_PERIPH_ID2 0xfe8 |
| 59 | #define MTU_PERIPH_ID3 0xfeC |
| 60 | |
| 61 | #define MTU_PCELL0 0xff0 |
| 62 | #define MTU_PCELL1 0xff4 |
| 63 | #define MTU_PCELL2 0xff8 |
| 64 | #define MTU_PCELL3 0xffC |
| 65 | |
| 66 | #endif /* __ASM_ARCH_MTU_H */ |