projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 544a7324 LPC |
1 | /* |
| 2 | * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de> | |
| 3 | * JZ4740 platform timer support | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms of the GNU General Public License as published by the | |
| 7 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 8 | * option) any later version. | |
| 9 | * | |
| 10 | * You should have received a copy of the GNU General Public License along | |
| 11 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 12 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 13 | * | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/io.h> | |
| 17 | #include <linux/kernel.h> | |
| 18 | #include <linux/module.h> | |
| 19 | ||
| 20 | #include "timer.h" | |
| 21 | ||
| 22 | #include <asm/mach-jz4740/base.h> | |
| 23 | ||
| 24 | void __iomem *jz4740_timer_base; | |
| 25 | ||
| 26 | void jz4740_timer_enable_watchdog(void) | |
| 27 | { | |
| 28 | writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR); | |
| 29 | } | |
| 30 | ||
| 31 | void jz4740_timer_disable_watchdog(void) | |
| 32 | { | |
| 33 | writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_SET); | |
| 34 | } | |
| 35 | ||
| 36 | void __init jz4740_timer_init(void) | |
| 37 | { | |
| 38 | jz4740_timer_base = ioremap(JZ4740_TCU_BASE_ADDR, 0x100); | |
| 39 | ||
| 40 | if (!jz4740_timer_base) | |
| 41 | panic("Failed to ioremap timer registers"); | |
| 42 | ||
| 43 | /* Disable all timer clocks except for those used as system timers */ | |
| 44 | writel(0x000100fc, jz4740_timer_base + JZ_REG_TIMER_STOP_SET); | |
| 45 | ||
| 46 | /* Timer irqs are unmasked by default, mask them */ | |
| 47 | writel(0x00ff00ff, jz4740_timer_base + JZ_REG_TIMER_MASK_SET); | |
| 48 | } |