From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- drivers/platform/x86/xo1-rfkill.c | 83 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 drivers/platform/x86/xo1-rfkill.c (limited to 'drivers/platform/x86/xo1-rfkill.c') diff --git a/drivers/platform/x86/xo1-rfkill.c b/drivers/platform/x86/xo1-rfkill.c new file mode 100644 index 000000000..e46fa9ceb --- /dev/null +++ b/drivers/platform/x86/xo1-rfkill.c @@ -0,0 +1,83 @@ +/* + * Support for rfkill through the OLPC XO-1 laptop embedded controller + * + * Copyright (C) 2010 One Laptop per Child + * + * 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. + */ + +#include +#include +#include +#include + +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 "); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:xo1-rfkill"); -- cgit v1.2.3