linux/drivers/platform/x86/xo1-rfkill.c
Thomas Gleixner 2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00

80 lines
1.5 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Support for rfkill through the OLPC XO-1 laptop embedded controller
*
* Copyright (C) 2010 One Laptop per Child
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/rfkill.h>
#include <linux/olpc-ec.h>
static bool card_blocked;
static int rfkill_set_block(void *data, bool blocked)
{
unsigned char cmd;
int r;
if (blocked == card_blocked)
return 0;
if (blocked)
cmd = EC_WLAN_ENTER_RESET;
else
cmd = EC_WLAN_LEAVE_RESET;
r = olpc_ec_cmd(cmd, NULL, 0, NULL, 0);
if (r == 0)
card_blocked = blocked;
return r;
}
static const struct rfkill_ops rfkill_ops = {
.set_block = rfkill_set_block,
};
static int xo1_rfkill_probe(struct platform_device *pdev)
{
struct rfkill *rfk;
int r;
rfk = rfkill_alloc(pdev->name, &pdev->dev, RFKILL_TYPE_WLAN,
&rfkill_ops, NULL);
if (!rfk)
return -ENOMEM;
r = rfkill_register(rfk);
if (r) {
rfkill_destroy(rfk);
return r;
}
platform_set_drvdata(pdev, rfk);
return 0;
}
static int xo1_rfkill_remove(struct platform_device *pdev)
{
struct rfkill *rfk = platform_get_drvdata(pdev);
rfkill_unregister(rfk);
rfkill_destroy(rfk);
return 0;
}
static struct platform_driver xo1_rfkill_driver = {
.driver = {
.name = "xo1-rfkill",
},
.probe = xo1_rfkill_probe,
.remove = xo1_rfkill_remove,
};
module_platform_driver(xo1_rfkill_driver);
MODULE_AUTHOR("Daniel Drake <dsd@laptop.org>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:xo1-rfkill");