2874c5fd28
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>
80 lines
1.5 KiB
C
80 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Support for rfkill through the OLPC XO-1 laptop embedded controller
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*
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* Copyright (C) 2010 One Laptop per Child
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/rfkill.h>
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#include <linux/olpc-ec.h>
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static bool card_blocked;
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static int rfkill_set_block(void *data, bool blocked)
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{
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unsigned char cmd;
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int r;
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if (blocked == card_blocked)
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return 0;
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if (blocked)
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cmd = EC_WLAN_ENTER_RESET;
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else
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cmd = EC_WLAN_LEAVE_RESET;
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r = olpc_ec_cmd(cmd, NULL, 0, NULL, 0);
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if (r == 0)
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card_blocked = blocked;
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return r;
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}
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static const struct rfkill_ops rfkill_ops = {
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.set_block = rfkill_set_block,
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};
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static int xo1_rfkill_probe(struct platform_device *pdev)
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{
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struct rfkill *rfk;
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int r;
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rfk = rfkill_alloc(pdev->name, &pdev->dev, RFKILL_TYPE_WLAN,
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&rfkill_ops, NULL);
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if (!rfk)
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return -ENOMEM;
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r = rfkill_register(rfk);
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if (r) {
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rfkill_destroy(rfk);
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return r;
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}
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platform_set_drvdata(pdev, rfk);
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return 0;
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}
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static int xo1_rfkill_remove(struct platform_device *pdev)
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{
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struct rfkill *rfk = platform_get_drvdata(pdev);
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rfkill_unregister(rfk);
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rfkill_destroy(rfk);
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return 0;
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}
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static struct platform_driver xo1_rfkill_driver = {
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.driver = {
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.name = "xo1-rfkill",
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},
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.probe = xo1_rfkill_probe,
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.remove = xo1_rfkill_remove,
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};
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module_platform_driver(xo1_rfkill_driver);
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MODULE_AUTHOR("Daniel Drake <dsd@laptop.org>");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:xo1-rfkill");
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