>From 0fb1727621932a24ea33795c1da3988f134974df Mon Sep 17 00:00:00 2001
From: JengHyun Kang <jhyuni.kang@samsung.com>
Date: Tue, 2 Aug 2016 12:27:21 +0900
Subject: [PATCH] evdev: Support a API to provide bustype information

There are APIs to get device's specific information,
such as libinput_device_get_id_product() and
libinput_device_get_id_vendor().
These APIs abstract libevdev APIs,
such as libevdev_get_id_product() and
libevdev_get_id_vendor().
But there is no abstraction API to get bustype.

Bustype sometimes provides proper information to know
how this device is connected.
So I added this API to get device's bustype.
---
 src/evdev.c      |  6 ++++++
 src/evdev.h      |  3 +++
 src/libinput.c   |  6 ++++++
 src/libinput.h   | 11 +++++++++++
 src/libinput.sym |  1 +
 5 files changed, 27 insertions(+)

diff --git a/src/evdev.c b/src/evdev.c
index 375d0a5..0378401 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -2560,6 +2560,12 @@ evdev_device_get_id_vendor(struct evdev_device *device)
 	return libevdev_get_id_vendor(device->evdev);
 }
 
+unsigned int
+evdev_device_get_id_bustype(struct evdev_device *device)
+{
+	return libevdev_get_id_bustype(device->evdev);
+}
+
 struct udev_device *
 evdev_device_get_udev_device(struct evdev_device *device)
 {
diff --git a/src/evdev.h b/src/evdev.h
index f73b88b..ec389c1 100644
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -356,6 +356,9 @@ evdev_device_get_id_product(struct evdev_device *device);
 unsigned int
 evdev_device_get_id_vendor(struct evdev_device *device);
 
+unsigned int
+evdev_device_get_id_bustype(struct evdev_device *device);
+
 struct udev_device *
 evdev_device_get_udev_device(struct evdev_device *device);
 
diff --git a/src/libinput.c b/src/libinput.c
index a8240bd..610a01b 100644
--- a/src/libinput.c
+++ b/src/libinput.c
@@ -2775,6 +2775,12 @@ libinput_device_get_id_vendor(struct libinput_device *device)
 	return evdev_device_get_id_vendor((struct evdev_device *) device);
 }
 
+LIBINPUT_EXPORT unsigned int
+libinput_device_get_id_bustype(struct libinput_device *device)
+{
+	return evdev_device_get_id_bustype((struct evdev_device *) device);
+}
+
 LIBINPUT_EXPORT const char *
 libinput_device_get_output_name(struct libinput_device *device)
 {
diff --git a/src/libinput.h b/src/libinput.h
index 83e58b6..fb94bac 100644
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -3355,6 +3355,17 @@ libinput_device_get_id_vendor(struct libinput_device *device);
 /**
  * @ingroup device
  *
+ * Get the bustype ID for this device.
+ *
+ * @param device A previously obtained device
+ * @return The bustype ID of this device
+ */
+unsigned int
+libinput_device_get_id_bustype(struct libinput_device *device);
+
+/**
+ * @ingroup device
+ *
  * A device may be mapped to a single output, or all available outputs. If a
  * device is mapped to a single output only, a relative device may not move
  * beyond the boundaries of this output. An absolute device has its input
diff --git a/src/libinput.sym b/src/libinput.sym
index cb3f2b8..faf4ce0 100644
--- a/src/libinput.sym
+++ b/src/libinput.sym
@@ -42,6 +42,7 @@ global:
 	libinput_device_get_device_group;
 	libinput_device_get_id_product;
 	libinput_device_get_id_vendor;
+	libinput_device_get_id_bustype;
 	libinput_device_get_name;
 	libinput_device_get_output_name;
 	libinput_device_get_seat;
-- 
1.9.1