Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <acpi/button.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) MODULE_AUTHOR("Josh Triplett");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) MODULE_DESCRIPTION("ACPI Tiny Power Button Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) static int power_signal __read_mostly = CONFIG_ACPI_TINY_POWER_BUTTON_SIGNAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) module_param(power_signal, int, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) MODULE_PARM_DESC(power_signal, "Power button sends this signal to init");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static const struct acpi_device_id tiny_power_button_device_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	{ ACPI_BUTTON_HID_POWER, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	{ ACPI_BUTTON_HID_POWERF, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	{ "", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) MODULE_DEVICE_TABLE(acpi, tiny_power_button_device_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static int acpi_noop_add_remove(struct acpi_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static void acpi_tiny_power_button_notify(struct acpi_device *device, u32 event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	kill_cad_pid(power_signal, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static struct acpi_driver acpi_tiny_power_button_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	.name = "tiny-power-button",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	.class = "tiny-power-button",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	.ids = tiny_power_button_device_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	.ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		.add = acpi_noop_add_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		.remove = acpi_noop_add_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		.notify = acpi_tiny_power_button_notify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) module_driver(acpi_tiny_power_button_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		acpi_bus_register_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		acpi_bus_unregister_driver);