mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-03 21:48:15 +00:00
9ca07ebbac
There are timers with a 64-bit counter value but current timer uclass driver assumes a 32-bit one. Modify timer_get_count() to ask timer driver to always return a 64-bit counter value, and provide an inline helper function timer_conv_64() to handle the 32-bit/64-bit conversion automatically. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef _TIMER_H_
|
|
#define _TIMER_H_
|
|
|
|
/*
|
|
* timer_conv_64 - convert 32-bit counter value to 64-bit
|
|
*
|
|
* @count: 32-bit counter value
|
|
* @return: 64-bit counter value
|
|
*/
|
|
u64 timer_conv_64(u32 count);
|
|
|
|
/*
|
|
* 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, u64 *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 64-bit timer count
|
|
* @return: 0 if OK, -ve on error
|
|
*/
|
|
int (*get_count)(struct udevice *dev, u64 *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_ */
|