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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* A general-purpose cyclic execution infrastructure, to allow "small"
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* (run-time wise) functions to be executed at a specified frequency.
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* Things like LED blinking or watchdog triggering are examples for such
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* tasks.
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*
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* Copyright (C) 2022 Stefan Roese <sr@denx.de>
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*/
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#include <common.h>
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#include <command.h>
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#include <cyclic.h>
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#include <div64.h>
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#include <malloc.h>
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#include <linux/delay.h>
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struct cyclic_demo_info {
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uint delay_us;
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};
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static void cyclic_demo(void *ctx)
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{
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struct cyclic_demo_info *info = ctx;
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/* Just a small dummy delay here */
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udelay(info->delay_us);
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}
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static int do_cyclic_demo(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct cyclic_demo_info *info;
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struct cyclic_info *cyclic;
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uint time_ms;
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if (argc < 3)
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return CMD_RET_USAGE;
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info = malloc(sizeof(struct cyclic_demo_info));
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if (!info) {
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printf("out of memory\n");
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return CMD_RET_FAILURE;
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}
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time_ms = simple_strtoul(argv[1], NULL, 0);
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info->delay_us = simple_strtoul(argv[2], NULL, 0);
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/* Register demo cyclic function */
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cyclic = cyclic_register(cyclic_demo, time_ms * 1000, "cyclic_demo",
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info);
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if (!cyclic)
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printf("Registering of cyclic_demo failed\n");
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printf("Registered function \"%s\" to be executed all %dms\n",
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"cyclic_demo", time_ms);
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return 0;
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}
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static int do_cyclic_list(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct cyclic_info *cyclic;
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struct hlist_node *tmp;
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u64 cnt, freq;
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hlist_for_each_entry_safe(cyclic, tmp, cyclic_get_list(), list) {
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cnt = cyclic->run_cnt * 1000000ULL * 100ULL;
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freq = lldiv(cnt, timer_get_us() - cyclic->start_time_us);
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printf("function: %s, cpu-time: %lld us, frequency: %lld.%02d times/s\n",
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cyclic->name, cyclic->cpu_time_us,
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lldiv(freq, 100), do_div(freq, 100));
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}
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return 0;
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}
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U_BOOT_LONGHELP(cyclic,
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"demo <cycletime_ms> <delay_us> - register cyclic demo function\n"
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"cyclic list - list cyclic functions\n");
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U_BOOT_CMD_WITH_SUBCMDS(cyclic, "Cyclic", cyclic_help_text,
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U_BOOT_SUBCMD_MKENT(demo, 3, 1, do_cyclic_demo),
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U_BOOT_SUBCMD_MKENT(list, 1, 1, do_cyclic_list));
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