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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Support for rfkill through the OLPC XO-1 laptop embedded controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 2010 One Laptop per Child
^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) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/rfkill.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/olpc-ec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static bool card_blocked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static int rfkill_set_block(void *data, bool blocked)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	unsigned char cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	if (blocked == card_blocked)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	if (blocked)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 		cmd = EC_WLAN_ENTER_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		cmd = EC_WLAN_LEAVE_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	r = olpc_ec_cmd(cmd, NULL, 0, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	if (r == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		card_blocked = blocked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static const struct rfkill_ops rfkill_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	.set_block = rfkill_set_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static int xo1_rfkill_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	struct rfkill *rfk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	rfk = rfkill_alloc(pdev->name, &pdev->dev, RFKILL_TYPE_WLAN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 			   &rfkill_ops, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	if (!rfk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	r = rfkill_register(rfk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	if (r) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		rfkill_destroy(rfk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	platform_set_drvdata(pdev, rfk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static int xo1_rfkill_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	struct rfkill *rfk = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	rfkill_unregister(rfk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	rfkill_destroy(rfk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static struct platform_driver xo1_rfkill_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 		.name = "xo1-rfkill",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	.probe		= xo1_rfkill_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	.remove		= xo1_rfkill_remove,
^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) module_platform_driver(xo1_rfkill_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) MODULE_AUTHOR("Daniel Drake <dsd@laptop.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) MODULE_ALIAS("platform:xo1-rfkill");