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c8a7ba9e6a
Implement a Timer uclass to work with lib/time.c. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Acked-by: Simon Glass <sjg@chromium.org>
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/*
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* Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _TIMER_H_
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#define _TIMER_H_
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/*
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* Get the current timer count
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*
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* @dev: The Timer device
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* @count: pointer that returns the current timer count
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* @return: 0 if OK, -ve on error
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*/
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int timer_get_count(struct udevice *dev, unsigned long *count);
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/*
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* Get the timer input clock frequency
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*
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* @dev: The Timer device
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* @return: the timer input clock frequency
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*/
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unsigned long timer_get_rate(struct udevice *dev);
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/*
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* struct timer_ops - Driver model Timer operations
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*
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* The uclass interface is implemented by all Timer devices which use
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* driver model.
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*/
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struct timer_ops {
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/*
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* Get the current timer count
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*
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* @dev: The Timer device
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* @count: pointer that returns the current timer count
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* @return: 0 if OK, -ve on error
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*/
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int (*get_count)(struct udevice *dev, unsigned long *count);
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};
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/*
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* struct timer_dev_priv - information about a device used by the uclass
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*
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* @clock_rate: the timer input clock frequency
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*/
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struct timer_dev_priv {
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unsigned long clock_rate;
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};
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#endif /* _TIMER_H_ */
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