Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *  linux/drivers/clocksource/dummy_timer.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  Copyright (C) 2013 ARM Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *  All Rights Reserved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/clockchips.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/percpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/cpumask.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) static DEFINE_PER_CPU(struct clock_event_device, dummy_timer_evt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static int dummy_timer_starting_cpu(unsigned int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	struct clock_event_device *evt = per_cpu_ptr(&dummy_timer_evt, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	evt->name	= "dummy_timer";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	evt->features	= CLOCK_EVT_FEAT_PERIODIC |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 			  CLOCK_EVT_FEAT_ONESHOT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 			  CLOCK_EVT_FEAT_DUMMY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	evt->rating	= 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	evt->cpumask	= cpumask_of(cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	clockevents_register_device(evt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static int __init dummy_timer_register(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	return cpuhp_setup_state(CPUHP_AP_DUMMY_TIMER_STARTING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 				 "clockevents/dummy_timer:starting",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 				 dummy_timer_starting_cpu, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) early_initcall(dummy_timer_register);