| Alexey Brodkin | 2f16ac9 | 2014-02-04 12:56:14 +0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #include <asm/arcregs.h> |
| 8 | |
| 9 | #define NH_MODE (1 << 1) /* Disable timer if CPU is halted */ |
| 10 | |
| 11 | int timer_init(void) |
| 12 | { |
| 13 | write_aux_reg(ARC_AUX_TIMER0_CTRL, NH_MODE); |
| 14 | /* Set max value for counter/timer */ |
| 15 | write_aux_reg(ARC_AUX_TIMER0_LIMIT, 0xffffffff); |
| 16 | /* Set initial count value and restart counter/timer */ |
| 17 | write_aux_reg(ARC_AUX_TIMER0_CNT, 0); |
| 18 | return 0; |
| 19 | } |
| 20 | |
| 21 | unsigned long timer_read_counter(void) |
| 22 | { |
| 23 | return read_aux_reg(ARC_AUX_TIMER0_CNT); |
| 24 | } |