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645dad5d3f
Preparatory work to introduce a second SoC : 2/5 The hwtimer.* files implement the driver for the SoC timer block. The timer.* files provides the OS level clock/timer functions. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BUG=None TEST=on BDS, check 'waitms' and 'gettime' on the EC console. Change-Id: Icbc58d9be59ee268e2d5a94f8b20de0cabcdc91d
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Hardware timer driver API */
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#ifndef __EC_HWTIMER_H
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#define __EC_HWTIMER_H
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/**
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* Programs when the next timer should fire an interrupt.
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* deadline: timestamp of the event.
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*/
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void __hw_clock_event_set(uint32_t deadline);
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/* Returns the timestamp of the next programed event */
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uint32_t __hw_clock_event_get(void);
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/* Cancel the next event programed by __hw_clock_event_set */
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void __hw_clock_event_clear(void);
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/* Returns the value of the free-running counter used as clock. */
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uint32_t __hw_clock_source_read(void);
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/**
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* Initializes the hardware timer used to provide clock services.
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*
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* It returns the IRQ number of the timer routine.
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*/
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int __hw_clock_source_init(void);
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/**
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* Searches the next deadline and program it in the timer hardware.
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*
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* overflow: if true, the 32-bit counter as overflowed since the last call.
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*
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* This function is exported from the common timers code as an helper for the
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* hardware timer interrupt routine.
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*/
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void process_timers(int overflow);
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#endif /* __EC_HWTIMER_H */
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