1 /* 2 * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw> 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #ifndef _TIMER_H_ 8 #define _TIMER_H_ 9 10 /* 11 * Get the current timer count 12 * 13 * @dev: The Timer device 14 * @count: pointer that returns the current timer count 15 * @return: 0 if OK, -ve on error 16 */ 17 int timer_get_count(struct udevice *dev, unsigned long *count); 18 /* 19 * Get the timer input clock frequency 20 * 21 * @dev: The Timer device 22 * @return: the timer input clock frequency 23 */ 24 unsigned long timer_get_rate(struct udevice *dev); 25 26 /* 27 * struct timer_ops - Driver model Timer operations 28 * 29 * The uclass interface is implemented by all Timer devices which use 30 * driver model. 31 */ 32 struct timer_ops { 33 /* 34 * Get the current timer count 35 * 36 * @dev: The Timer device 37 * @count: pointer that returns the current timer count 38 * @return: 0 if OK, -ve on error 39 */ 40 int (*get_count)(struct udevice *dev, unsigned long *count); 41 }; 42 43 /* 44 * struct timer_dev_priv - information about a device used by the uclass 45 * 46 * @clock_rate: the timer input clock frequency 47 */ 48 struct timer_dev_priv { 49 unsigned long clock_rate; 50 }; 51 52 #endif /* _TIMER_H_ */ 53