mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-15 01:17:39 +00:00
3616218b5a
- Generally we just drop the #ifdef CONFIG_SYS_LONGHELP and endif lines and use U_BOOT_LONGHELP to declare the same variable name as before - In a few places, either rename the variable to follow convention or introduce the variable as it was being done inline before. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* A general-purpose cyclic execution infrastructure, to allow "small"
|
|
* (run-time wise) functions to be executed at a specified frequency.
|
|
* Things like LED blinking or watchdog triggering are examples for such
|
|
* tasks.
|
|
*
|
|
* Copyright (C) 2022 Stefan Roese <sr@denx.de>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <cyclic.h>
|
|
#include <div64.h>
|
|
#include <malloc.h>
|
|
#include <linux/delay.h>
|
|
|
|
struct cyclic_demo_info {
|
|
uint delay_us;
|
|
};
|
|
|
|
static void cyclic_demo(void *ctx)
|
|
{
|
|
struct cyclic_demo_info *info = ctx;
|
|
|
|
/* Just a small dummy delay here */
|
|
udelay(info->delay_us);
|
|
}
|
|
|
|
static int do_cyclic_demo(struct cmd_tbl *cmdtp, int flag, int argc,
|
|
char *const argv[])
|
|
{
|
|
struct cyclic_demo_info *info;
|
|
struct cyclic_info *cyclic;
|
|
uint time_ms;
|
|
|
|
if (argc < 3)
|
|
return CMD_RET_USAGE;
|
|
|
|
info = malloc(sizeof(struct cyclic_demo_info));
|
|
if (!info) {
|
|
printf("out of memory\n");
|
|
return CMD_RET_FAILURE;
|
|
}
|
|
|
|
time_ms = simple_strtoul(argv[1], NULL, 0);
|
|
info->delay_us = simple_strtoul(argv[2], NULL, 0);
|
|
|
|
/* Register demo cyclic function */
|
|
cyclic = cyclic_register(cyclic_demo, time_ms * 1000, "cyclic_demo",
|
|
info);
|
|
if (!cyclic)
|
|
printf("Registering of cyclic_demo failed\n");
|
|
|
|
printf("Registered function \"%s\" to be executed all %dms\n",
|
|
"cyclic_demo", time_ms);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int do_cyclic_list(struct cmd_tbl *cmdtp, int flag, int argc,
|
|
char *const argv[])
|
|
{
|
|
struct cyclic_info *cyclic;
|
|
struct hlist_node *tmp;
|
|
u64 cnt, freq;
|
|
|
|
hlist_for_each_entry_safe(cyclic, tmp, cyclic_get_list(), list) {
|
|
cnt = cyclic->run_cnt * 1000000ULL * 100ULL;
|
|
freq = lldiv(cnt, timer_get_us() - cyclic->start_time_us);
|
|
printf("function: %s, cpu-time: %lld us, frequency: %lld.%02d times/s\n",
|
|
cyclic->name, cyclic->cpu_time_us,
|
|
lldiv(freq, 100), do_div(freq, 100));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_LONGHELP(cyclic,
|
|
"demo <cycletime_ms> <delay_us> - register cyclic demo function\n"
|
|
"cyclic list - list cyclic functions\n");
|
|
|
|
U_BOOT_CMD_WITH_SUBCMDS(cyclic, "Cyclic", cyclic_help_text,
|
|
U_BOOT_SUBCMD_MKENT(demo, 3, 1, do_cyclic_demo),
|
|
U_BOOT_SUBCMD_MKENT(list, 1, 1, do_cyclic_list));
|