include: add uinput.h header as well

Older kernels don't have UI_GET_SYSNAME, and upstream is adding a few more
ioctls to the uinput code. So ship the header we're using to avoid compilation
errors.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>

2 files changed, 150 insertions, 1 deletions

diff --git a/include/linux/uinput.h b/include/linux/uinput.h
new file mode 100644
index 0000000..4f0c5f9
--- /dev/null
+++ b/include/linux/uinput.h
@@ -0,0 +1,148 @@
+/*
+ *  User level driver support for input subsystem
+ *
+ * Heavily based on evdev.c by Vojtech Pavlik
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>
+ *
+ * Changes/Revisions:
+ *	0.4	01/09/2014 (Benjamin Tissoires <benjamin.tissoires@redhat.com>)
+ *		- add UI_GET_SYSNAME ioctl
+ *	0.3	24/05/2006 (Anssi Hannula <anssi.hannulagmail.com>)
+ *		- update ff support for the changes in kernel interface
+ *		- add UINPUT_VERSION
+ *	0.2	16/10/2004 (Micah Dowty <micah@navi.cx>)
+ *		- added force feedback support
+ *             - added UI_SET_PHYS
+ *	0.1	20/06/2002
+ *		- first public version
+ */
+#ifndef __UINPUT_H_
+#define __UINPUT_H_
+
+#include <linux/types.h>
+#include <linux/input.h>
+
+#define UINPUT_VERSION		4
+
+
+struct uinput_ff_upload {
+	__u32			request_id;
+	__s32			retval;
+	struct ff_effect	effect;
+	struct ff_effect	old;
+};
+
+struct uinput_ff_erase {
+	__u32			request_id;
+	__s32			retval;
+	__u32			effect_id;
+};
+
+/* ioctl */
+#define UINPUT_IOCTL_BASE	'U'
+#define UI_DEV_CREATE		_IO(UINPUT_IOCTL_BASE, 1)
+#define UI_DEV_DESTROY		_IO(UINPUT_IOCTL_BASE, 2)
+
+#define UI_SET_EVBIT		_IOW(UINPUT_IOCTL_BASE, 100, int)
+#define UI_SET_KEYBIT		_IOW(UINPUT_IOCTL_BASE, 101, int)
+#define UI_SET_RELBIT		_IOW(UINPUT_IOCTL_BASE, 102, int)
+#define UI_SET_ABSBIT		_IOW(UINPUT_IOCTL_BASE, 103, int)
+#define UI_SET_MSCBIT		_IOW(UINPUT_IOCTL_BASE, 104, int)
+#define UI_SET_LEDBIT		_IOW(UINPUT_IOCTL_BASE, 105, int)
+#define UI_SET_SNDBIT		_IOW(UINPUT_IOCTL_BASE, 106, int)
+#define UI_SET_FFBIT		_IOW(UINPUT_IOCTL_BASE, 107, int)
+#define UI_SET_PHYS		_IOW(UINPUT_IOCTL_BASE, 108, char*)
+#define UI_SET_SWBIT		_IOW(UINPUT_IOCTL_BASE, 109, int)
+#define UI_SET_PROPBIT		_IOW(UINPUT_IOCTL_BASE, 110, int)
+
+#define UI_BEGIN_FF_UPLOAD	_IOWR(UINPUT_IOCTL_BASE, 200, struct uinput_ff_upload)
+#define UI_END_FF_UPLOAD	_IOW(UINPUT_IOCTL_BASE, 201, struct uinput_ff_upload)
+#define UI_BEGIN_FF_ERASE	_IOWR(UINPUT_IOCTL_BASE, 202, struct uinput_ff_erase)
+#define UI_END_FF_ERASE		_IOW(UINPUT_IOCTL_BASE, 203, struct uinput_ff_erase)
+
+/**
+ * UI_GET_SYSNAME - get the sysfs name of the created uinput device
+ *
+ * @return the sysfs name of the created virtual input device.
+ * The complete sysfs path is then /sys/devices/virtual/input/--NAME--
+ * Usually, it is in the form "inputN"
+ */
+#define UI_GET_SYSNAME(len)	_IOC(_IOC_READ, UINPUT_IOCTL_BASE, 300, len)
+
+/*
+ * To write a force-feedback-capable driver, the upload_effect
+ * and erase_effect callbacks in input_dev must be implemented.
+ * The uinput driver will generate a fake input event when one of
+ * these callbacks are invoked. The userspace code then uses
+ * ioctls to retrieve additional parameters and send the return code.
+ * The callback blocks until this return code is sent.
+ *
+ * The described callback mechanism is only used if ff_effects_max
+ * is set.
+ *
+ * To implement upload_effect():
+ *   1. Wait for an event with type == EV_UINPUT and code == UI_FF_UPLOAD.
+ *      A request ID will be given in 'value'.
+ *   2. Allocate a uinput_ff_upload struct, fill in request_id with
+ *      the 'value' from the EV_UINPUT event.
+ *   3. Issue a UI_BEGIN_FF_UPLOAD ioctl, giving it the
+ *      uinput_ff_upload struct. It will be filled in with the
+ *      ff_effects passed to upload_effect().
+ *   4. Perform the effect upload, and place a return code back into
+        the uinput_ff_upload struct.
+ *   5. Issue a UI_END_FF_UPLOAD ioctl, also giving it the
+ *      uinput_ff_upload_effect struct. This will complete execution
+ *      of our upload_effect() handler.
+ *
+ * To implement erase_effect():
+ *   1. Wait for an event with type == EV_UINPUT and code == UI_FF_ERASE.
+ *      A request ID will be given in 'value'.
+ *   2. Allocate a uinput_ff_erase struct, fill in request_id with
+ *      the 'value' from the EV_UINPUT event.
+ *   3. Issue a UI_BEGIN_FF_ERASE ioctl, giving it the
+ *      uinput_ff_erase struct. It will be filled in with the
+ *      effect ID passed to erase_effect().
+ *   4. Perform the effect erasure, and place a return code back
+ *      into the uinput_ff_erase struct.
+ *   5. Issue a UI_END_FF_ERASE ioctl, also giving it the
+ *      uinput_ff_erase_effect struct. This will complete execution
+ *      of our erase_effect() handler.
+ */
+
+/*
+ * This is the new event type, used only by uinput.
+ * 'code' is UI_FF_UPLOAD or UI_FF_ERASE, and 'value'
+ * is the unique request ID. This number was picked
+ * arbitrarily, above EV_MAX (since the input system
+ * never sees it) but in the range of a 16-bit int.
+ */
+#define EV_UINPUT		0x0101
+#define UI_FF_UPLOAD		1
+#define UI_FF_ERASE		2
+
+#define UINPUT_MAX_NAME_SIZE	80
+struct uinput_user_dev {
+	char name[UINPUT_MAX_NAME_SIZE];
+	struct input_id id;
+	__u32 ff_effects_max;
+	__s32 absmax[ABS_CNT];
+	__s32 absmin[ABS_CNT];
+	__s32 absfuzz[ABS_CNT];
+	__s32 absflat[ABS_CNT];
+};
+#endif /* __UINPUT_H_ */
diff --git a/libevdev/Makefile.am b/libevdev/Makefile.am
index c83a225..dc027b0 100644
--- a/libevdev/Makefile.am
+++ b/libevdev/Makefile.am
@@ -11,7 +11,8 @@ libevdev_la_SOURCES = \
                    libevdev-uinput-int.h \
                    libevdev.c \
                    libevdev-names.c \
-		   ../include/linux/input.h
+		   ../include/linux/input.h \
+		   ../include/linux/uinput.h
 
 libevdev_la_LDFLAGS = \
 	-version-info $(LIBEVDEV_LT_VERSION) \