1/*
 2 * Support for rfkill through the OLPC XO-1 laptop embedded controller
 3 *
 4 * Copyright (C) 2010 One Laptop per Child
 5 *
 6 * This program is free software; you can redistribute it and/or modify
 7 * it under the terms of the GNU General Public License as published by
 8 * the Free Software Foundation; either version 2 of the License, or
 9 * (at your option) any later version.
10 */
11
12#include <linux/module.h>
13#include <linux/platform_device.h>
14#include <linux/rfkill.h>
15#include <linux/olpc-ec.h>
16
17static bool card_blocked;
18
19static int rfkill_set_block(void *data, bool blocked)
20{
21	unsigned char cmd;
22	int r;
23
24	if (blocked == card_blocked)
25		return 0;
26
27	if (blocked)
28		cmd = EC_WLAN_ENTER_RESET;
29	else
30		cmd = EC_WLAN_LEAVE_RESET;
31
32	r = olpc_ec_cmd(cmd, NULL, 0, NULL, 0);
33	if (r == 0)
34		card_blocked = blocked;
35
36	return r;
37}
38
39static const struct rfkill_ops rfkill_ops = {
40	.set_block = rfkill_set_block,
41};
42
43static int xo1_rfkill_probe(struct platform_device *pdev)
44{
45	struct rfkill *rfk;
46	int r;
47
48	rfk = rfkill_alloc(pdev->name, &pdev->dev, RFKILL_TYPE_WLAN,
49			   &rfkill_ops, NULL);
50	if (!rfk)
51		return -ENOMEM;
52
53	r = rfkill_register(rfk);
54	if (r) {
55		rfkill_destroy(rfk);
56		return r;
57	}
58
59	platform_set_drvdata(pdev, rfk);
60	return 0;
61}
62
63static int xo1_rfkill_remove(struct platform_device *pdev)
64{
65	struct rfkill *rfk = platform_get_drvdata(pdev);
66	rfkill_unregister(rfk);
67	rfkill_destroy(rfk);
68	return 0;
69}
70
71static struct platform_driver xo1_rfkill_driver = {
72	.driver = {
73		.name = "xo1-rfkill",
74	},
75	.probe		= xo1_rfkill_probe,
76	.remove		= xo1_rfkill_remove,
77};
78
79module_platform_driver(xo1_rfkill_driver);
80
81MODULE_AUTHOR("Daniel Drake <dsd@laptop.org>");
82MODULE_LICENSE("GPL");
83MODULE_ALIAS("platform:xo1-rfkill");

 1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 * Support for rfkill through the OLPC XO-1 laptop embedded controller
 4 *
 5 * Copyright (C) 2010 One Laptop per Child
 
 
 
 
 
 6 */
 7
 8#include <linux/module.h>
 9#include <linux/platform_device.h>
10#include <linux/rfkill.h>
11#include <linux/olpc-ec.h>
12
13static bool card_blocked;
14
15static int rfkill_set_block(void *data, bool blocked)
16{
17	unsigned char cmd;
18	int r;
19
20	if (blocked == card_blocked)
21		return 0;
22
23	if (blocked)
24		cmd = EC_WLAN_ENTER_RESET;
25	else
26		cmd = EC_WLAN_LEAVE_RESET;
27
28	r = olpc_ec_cmd(cmd, NULL, 0, NULL, 0);
29	if (r == 0)
30		card_blocked = blocked;
31
32	return r;
33}
34
35static const struct rfkill_ops rfkill_ops = {
36	.set_block = rfkill_set_block,
37};
38
39static int xo1_rfkill_probe(struct platform_device *pdev)
40{
41	struct rfkill *rfk;
42	int r;
43
44	rfk = rfkill_alloc(pdev->name, &pdev->dev, RFKILL_TYPE_WLAN,
45			   &rfkill_ops, NULL);
46	if (!rfk)
47		return -ENOMEM;
48
49	r = rfkill_register(rfk);
50	if (r) {
51		rfkill_destroy(rfk);
52		return r;
53	}
54
55	platform_set_drvdata(pdev, rfk);
56	return 0;
57}
58
59static void xo1_rfkill_remove(struct platform_device *pdev)
60{
61	struct rfkill *rfk = platform_get_drvdata(pdev);
62	rfkill_unregister(rfk);
63	rfkill_destroy(rfk);
 
64}
65
66static struct platform_driver xo1_rfkill_driver = {
67	.driver = {
68		.name = "xo1-rfkill",
69	},
70	.probe		= xo1_rfkill_probe,
71	.remove_new	= xo1_rfkill_remove,
72};
73
74module_platform_driver(xo1_rfkill_driver);
75
76MODULE_AUTHOR("Daniel Drake <dsd@laptop.org>");
77MODULE_LICENSE("GPL");
78MODULE_ALIAS("platform:xo1-rfkill");