From c8a7ba9e6a5fe2fc7b4a7894829aa0b0148b4d40 Mon Sep 17 00:00:00 2001 From: Thomas Chou Date: Fri, 9 Oct 2015 13:46:34 +0800 Subject: dm: implement a Timer uclass Implement a Timer uclass to work with lib/time.c. Signed-off-by: Thomas Chou Acked-by: Simon Glass --- include/timer.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 include/timer.h (limited to 'include/timer.h') diff --git a/include/timer.h b/include/timer.h new file mode 100644 index 0000000000..cdf385d174 --- /dev/null +++ b/include/timer.h @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2015 Thomas Chou + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _TIMER_H_ +#define _TIMER_H_ + +/* + * Get the current timer count + * + * @dev: The Timer device + * @count: pointer that returns the current timer count + * @return: 0 if OK, -ve on error + */ +int timer_get_count(struct udevice *dev, unsigned long *count); +/* + * Get the timer input clock frequency + * + * @dev: The Timer device + * @return: the timer input clock frequency + */ +unsigned long timer_get_rate(struct udevice *dev); + +/* + * struct timer_ops - Driver model Timer operations + * + * The uclass interface is implemented by all Timer devices which use + * driver model. + */ +struct timer_ops { + /* + * Get the current timer count + * + * @dev: The Timer device + * @count: pointer that returns the current timer count + * @return: 0 if OK, -ve on error + */ + int (*get_count)(struct udevice *dev, unsigned long *count); +}; + +/* + * struct timer_dev_priv - information about a device used by the uclass + * + * @clock_rate: the timer input clock frequency + */ +struct timer_dev_priv { + unsigned long clock_rate; +}; + +#endif /* _TIMER_H_ */ -- cgit v1.2.3