[systemd-devel] [PATCH] udev: input_id: tag accelerometers as ID_INPUT_ACCELEROMETER

[Hans de Goede]

input_id already (tries to) tag accelerometers as such, but this only works
for absolute accelerometers. Recent kernels mark accelerometers through an
input prop. Trust that prop and always tag devices with it with
ID_INPUT_ACCELEROMETER.

Note that detection by the prop bit works the same as the existing detection
and will ensure that no other tags get set on the device.

Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 src/shared/missing.h             | 4 ++++
 src/udev/udev-builtin-input_id.c | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/src/shared/missing.h b/src/shared/missing.h
index 3bdfd8f..4464e35 100644
--- a/src/shared/missing.h
+++ b/src/shared/missing.h
@@ -944,3 +944,7 @@ static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, uns
 #ifndef INPUT_PROP_POINTING_STICK
 #define INPUT_PROP_POINTING_STICK 0x05
 #endif
+
+#ifndef INPUT_PROP_ACCELEROMETER
+#define INPUT_PROP_ACCELEROMETER  0x06
+#endif
diff --git a/src/udev/udev-builtin-input_id.c b/src/udev/udev-builtin-input_id.c
index d4c38ca..ecfc447 100644
--- a/src/udev/udev-builtin-input_id.c
+++ b/src/udev/udev-builtin-input_id.c
@@ -136,6 +136,11 @@ static void test_pointers (struct udev_device *dev,
         int is_mouse = 0;
         int is_touchpad = 0;
 
+        if (test_bit (INPUT_PROP_ACCELEROMETER, bitmask_props)) {
+                udev_builtin_add_property(dev, test, "ID_INPUT_ACCELEROMETER", "1");
+                return;
+        }
+
         if (!test_bit (EV_KEY, bitmask_ev)) {
                 if (test_bit (EV_ABS, bitmask_ev) &&
                     test_bit (ABS_X, bitmask_abs) &&
-- 
2.3.4