HID: sony: Fix DS4 controller reporting rate issues
authorRostislav Pehlivanov <atomnuker@gmail.com>
Tue, 28 Jul 2015 07:38:47 +0000 (08:38 +0100)
committerJiri Kosina <jkosina@suse.com>
Fri, 31 Jul 2015 07:36:54 +0000 (09:36 +0200)
commit824deff87f5b1a2f32b9c3164191b0f5b22276b8
tree6dd619a679c0c396d401a58c99b4ed5762072dfd
parent8f5f0bc2766af7785161a4440bca1d0746eb3671
HID: sony: Fix DS4 controller reporting rate issues

This commit removes the cap on the DualShock 4 controller reporting rate when
connected using Bluetooth. The previous value of '0xB0' capped the rate to only
20.83 Hz which many userspace utilities mistook as a sign of a bad signal.
Since a 'B' and an '8' can look similar it's possible that someone mistook the
one for another.  The new value of '0x80' enables the full 1000 Hz peak
reporting rate that the controller is capable of.

Frank adds: "Back when the original code was written the purpose of that value
was unknown and 0xB0 seemed to work so that's what ended up being used.  Now
that we know what it actually does and that 0x80 is a better choice I support
this patch."

[jkosina@suse.com: update changelog]
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Acked-by: Frank Praznik <frank.praznik@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
drivers/hid/hid-sony.c