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42 lines
926 B
42 lines
926 B
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/arch/arm/kernel/arch_timer.c |
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* |
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* Copyright (C) 2011 ARM Ltd. |
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* All Rights Reserved |
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*/ |
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#include <linux/init.h> |
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#include <linux/types.h> |
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#include <linux/errno.h> |
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#include <asm/delay.h> |
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#include <asm/arch_timer.h> |
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#include <clocksource/arm_arch_timer.h> |
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static unsigned long arch_timer_read_counter_long(void) |
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{ |
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return arch_timer_read_counter(); |
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} |
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static struct delay_timer arch_delay_timer; |
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static void __init arch_timer_delay_timer_register(void) |
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{ |
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/* Use the architected timer for the delay loop. */ |
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arch_delay_timer.read_current_timer = arch_timer_read_counter_long; |
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arch_delay_timer.freq = arch_timer_get_rate(); |
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register_current_timer_delay(&arch_delay_timer); |
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} |
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int __init arch_timer_arch_init(void) |
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{ |
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u32 arch_timer_rate = arch_timer_get_rate(); |
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if (arch_timer_rate == 0) |
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return -ENXIO; |
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arch_timer_delay_timer_register(); |
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return 0; |
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}
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