xilinx_timer.c File Reference

Timer and GIC control module source. More...

#include <stdlib.h>
#include <xparameters.h>
#include "no_os_timer.h"
#include "xilinx_timer.h"
#include "no_os_error.h"
#include "no_os_alloc.h"

Include dependency graph for xilinx_timer.c:

Functions
int32_t	xilinx_timer_start (struct no_os_timer_desc *desc)
	Start a timer.
int32_t	xilinx_timer_stop (struct no_os_timer_desc *desc)
	Stop a timer from counting.
int32_t	xilinx_timer_counter_get (struct no_os_timer_desc *desc, uint32_t *counter)
	Get the current counter value of the timer.
int32_t	xilinx_timer_counter_set (struct no_os_timer_desc *desc, uint32_t new_val)
	Set the current counter value of the timer.
int32_t	xilinx_timer_count_clk_get (struct no_os_timer_desc *desc, uint32_t *freq_hz)
	Get the timer clock frequency.
int32_t	xilinx_timer_count_clk_set (struct no_os_timer_desc *desc, uint32_t freq_hz)
	Set the timer clock frequency.
int32_t	xilinx_timer_get_elapsed_time_nsec (struct no_os_timer_desc *desc, uint64_t *elapsed_time)
	Get the elapsed time in nsec for the timer.
int32_t	xilinx_timer_init (struct no_os_timer_desc **desc, const struct no_os_timer_init_param *param)
	Initialize hardware timer and the handler structure associated with it.
int32_t	xilinx_timer_remove (struct no_os_timer_desc *desc)
	Free the memory allocated by timer_setup().

Variables
const struct no_os_timer_platform_ops	xil_timer_ops
	Xilinx platform specific timer platform ops structure.

Detailed Description

Timer and GIC control module source.

Author

Andrei Drimbarean (andre.nosp@m.i.dr.nosp@m.imbar.nosp@m.ean@.nosp@m.analo.nosp@m.g.co.nosp@m.m)

Copyright 2020(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Function Documentation

xilinx_timer_count_clk_get()

int32_t xilinx_timer_count_clk_get	(	struct no_os_timer_desc *	desc,
		uint32_t *	freq_hz )

Get the timer clock frequency.

Parameters

[in]	desc	- Pointer to the device handler.
[out]	freq_hz	- Pointer to the returned frequency.

Returns

0 in case of success, -1 otherwise

xilinx_timer_count_clk_set()

int32_t xilinx_timer_count_clk_set	(	struct no_os_timer_desc *	desc,
		uint32_t	freq_hz )

Set the timer clock frequency.

Parameters

[in]	desc	- Pointer to the device handler.
[in]	freq_hz	- New timer frequency in hertz.

Returns

0 in case of success, -1 otherwise

xilinx_timer_counter_get()

int32_t xilinx_timer_counter_get	(	struct no_os_timer_desc *	desc,
		uint32_t *	counter )

Get the current counter value of the timer.

Parameters

[in]	desc	- Pointer to the device handler.
[out]	counter	- Pointer to the current counter value.

Returns

0 in case of success, -1 otherwise

xilinx_timer_counter_set()

int32_t xilinx_timer_counter_set	(	struct no_os_timer_desc *	desc,
		uint32_t	new_val )

Set the current counter value of the timer.

Parameters

[in]	desc	- Pointer to the device handler.
[in]	new_val	- New value for the timer counter.

Returns

0 in case of success, -1 otherwise

xilinx_timer_get_elapsed_time_nsec()

int32_t xilinx_timer_get_elapsed_time_nsec	(	struct no_os_timer_desc *	desc,
		uint64_t *	elapsed_time )

Get the elapsed time in nsec for the timer.

Parameters

[in]	desc	- Pointer to the device handler.
[in]	elapsed_time	- The elapsed time in nsec.

Returns

-ENOSYS.

xilinx_timer_init()

int32_t xilinx_timer_init	(	struct no_os_timer_desc **	desc,
		const struct no_os_timer_init_param *	param )

Initialize hardware timer and the handler structure associated with it.

Parameters

[out]	desc	- Pointer to the reference of the device handler.
[in]	param	- Initialization structure.

Returns

0 in case of success, -1 otherwise

xilinx_timer_remove()

int32_t xilinx_timer_remove

(

struct no_os_timer_desc *

desc

)

Free the memory allocated by timer_setup().

Parameters

[in]

desc

- Pointer to the device handler.

Returns

0 in case of success, -1 otherwise

xilinx_timer_start()

int32_t xilinx_timer_start

(

struct no_os_timer_desc *

desc

)

Start a timer.

Parameters

[in]

desc

- Pointer to the device handler.

Returns

0 in case of success, -1 otherwise

xilinx_timer_stop()

int32_t xilinx_timer_stop

(

struct no_os_timer_desc *

desc

)

Stop a timer from counting.

Parameters

[in]

desc

- Pointer to the device handler.

Returns

0 in case of success, -1 otherwise

Variable Documentation

xil_timer_ops

const struct no_os_timer_platform_ops xil_timer_ops

Initial value:

= {
    .init = &xilinx_timer_init,
    .start = &xilinx_timer_start,
    .stop = &xilinx_timer_stop,
    .counter_get = &xilinx_timer_counter_get,
    .counter_set = &xilinx_timer_counter_set,
    .count_clk_get = &xilinx_timer_count_clk_get,
    .count_clk_set = &xilinx_timer_count_clk_set,
    .get_elapsed_time_nsec = &xilinx_timer_get_elapsed_time_nsec,
    .remove = &xilinx_timer_remove
}

Xilinx platform specific timer platform ops structure.