Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) // Power Button driver for RAVE SP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) // Copyright (C) 2017 Zodiac Inflight Innovations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/mfd/rave-sp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define RAVE_SP_EVNT_BUTTON_PRESS	(RAVE_SP_EVNT_BASE + 0x00)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct rave_sp_power_button {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	struct input_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	struct notifier_block nb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static int rave_sp_power_button_event(struct notifier_block *nb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 				      unsigned long action, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	struct rave_sp_power_button *pb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		container_of(nb, struct rave_sp_power_button, nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	const u8 event = rave_sp_action_unpack_event(action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	const u8 value = rave_sp_action_unpack_value(action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	struct input_dev *idev = pb->idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	if (event == RAVE_SP_EVNT_BUTTON_PRESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		input_report_key(idev, KEY_POWER, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		input_sync(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		return NOTIFY_STOP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static int rave_sp_pwrbutton_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	struct rave_sp_power_button *pb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	struct input_dev *idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	pb = devm_kzalloc(dev, sizeof(*pb), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	if (!pb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	idev = devm_input_allocate_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	if (!idev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	idev->name = pdev->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	input_set_capability(idev, EV_KEY, KEY_POWER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	error = input_register_device(idev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	pb->idev = idev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	pb->nb.notifier_call = rave_sp_power_button_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	pb->nb.priority = 128;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	error = devm_rave_sp_register_event_notifier(dev, &pb->nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 		return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static const struct of_device_id rave_sp_pwrbutton_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	{ .compatible = "zii,rave-sp-pwrbutton" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	{}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static struct platform_driver rave_sp_pwrbutton_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	.probe = rave_sp_pwrbutton_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 	.driver	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 		.name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 		.of_match_table = rave_sp_pwrbutton_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) module_platform_driver(rave_sp_pwrbutton_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) MODULE_DEVICE_TABLE(of, rave_sp_pwrbutton_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) MODULE_AUTHOR("Andrey Vostrikov <andrey.vostrikov@cogentembedded.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) MODULE_AUTHOR("Nikita Yushchenko <nikita.yoush@cogentembedded.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) MODULE_DESCRIPTION("RAVE SP Power Button driver");