From: Chris Renshaw <osm0sis@outlook.com>
Date: Sat, 28 Nov 2015 11:45:26 -0400
Subject: [PATCH] rfkill: add missing header

Imported from dorimanx's combined ported header toolchain:
https://github.com/dorimanx/android-busybox-ndk
---
 include/linux/rfkill.h | 107 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 include/linux/rfkill.h

diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h
new file mode 100644
index 0000000..abb2c66
--- /dev/null
+++ b/include/linux/rfkill.h
@@ -0,0 +1,107 @@
+#ifndef __RFKILL_H
+#define __RFKILL_H
+
+/*
+ * Copyright (C) 2006 - 2007 Ivo van Doorn
+ * Copyright (C) 2007 Dmitry Torokhov
+ * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/types.h>
+
+/* define userspace visible states */
+#define RFKILL_STATE_SOFT_BLOCKED	0
+#define RFKILL_STATE_UNBLOCKED		1
+#define RFKILL_STATE_HARD_BLOCKED	2
+
+/**
+ * enum rfkill_type - type of rfkill switch.
+ *
+ * @RFKILL_TYPE_ALL: toggles all switches (requests only - not a switch type)
+ * @RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device.
+ * @RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device.
+ * @RFKILL_TYPE_UWB: switch is on a ultra wideband device.
+ * @RFKILL_TYPE_WIMAX: switch is on a WiMAX device.
+ * @RFKILL_TYPE_WWAN: switch is on a wireless WAN device.
+ * @RFKILL_TYPE_GPS: switch is on a GPS device.
+ * @RFKILL_TYPE_FM: switch is on a FM radio device.
+ * @NUM_RFKILL_TYPES: number of defined rfkill types
+ */
+enum rfkill_type {
+	RFKILL_TYPE_ALL = 0,
+	RFKILL_TYPE_WLAN,
+	RFKILL_TYPE_BLUETOOTH,
+	RFKILL_TYPE_UWB,
+	RFKILL_TYPE_WIMAX,
+	RFKILL_TYPE_WWAN,
+	RFKILL_TYPE_GPS,
+	RFKILL_TYPE_FM,
+	NUM_RFKILL_TYPES,
+};
+
+/**
+ * enum rfkill_operation - operation types
+ * @RFKILL_OP_ADD: a device was added
+ * @RFKILL_OP_DEL: a device was removed
+ * @RFKILL_OP_CHANGE: a device's state changed -- userspace changes one device
+ * @RFKILL_OP_CHANGE_ALL: userspace changes all devices (of a type, or all)
+ */
+enum rfkill_operation {
+	RFKILL_OP_ADD = 0,
+	RFKILL_OP_DEL,
+	RFKILL_OP_CHANGE,
+	RFKILL_OP_CHANGE_ALL,
+};
+
+/**
+ * struct rfkill_event - events for userspace on /dev/rfkill
+ * @idx: index of dev rfkill
+ * @type: type of the rfkill struct
+ * @op: operation code
+ * @hard: hard state (0/1)
+ * @soft: soft state (0/1)
+ *
+ * Structure used for userspace communication on /dev/rfkill,
+ * used for events from the kernel and control to the kernel.
+ */
+struct rfkill_event {
+	__u32 idx;
+	__u8  type;
+	__u8  op;
+	__u8  soft, hard;
+} __attribute__((packed));
+
+/*
+ * We are planning to be backward and forward compatible with changes
+ * to the event struct, by adding new, optional, members at the end.
+ * When reading an event (whether the kernel from userspace or vice
+ * versa) we need to accept anything that's at least as large as the
+ * version 1 event size, but might be able to accept other sizes in
+ * the future.
+ *
+ * One exception is the kernel -- we already have two event sizes in
+ * that we've made the 'hard' member optional since our only option
+ * is to ignore it anyway.
+ */
+#define RFKILL_EVENT_SIZE_V1	8
+
+/* ioctl for turning off rfkill-input (if present) */
+#define RFKILL_IOC_MAGIC	'R'
+#define RFKILL_IOC_NOINPUT	1
+#define RFKILL_IOCTL_NOINPUT	_IO(RFKILL_IOC_MAGIC, RFKILL_IOC_NOINPUT)
+
+/* and that's all userspace gets */
+
+#endif /* RFKILL_H */
-- 
2.5.3

