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HID: handle joysticks with large number of buttons

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Current HID code doesn't properly handle HID joysticks which have
larger number of buttons than what fits into current range reserved
for BTN_JOYSTICK.

One such joystick reported to not work properly is Saitek X52 Pro
Flight System.

We can't extend the range to fit more buttons in, because of backwards
compatibility reasons.

Therefore this patch introduces a new BTN_TRIGGER_HAPPY range, and
uses these to map the buttons which are over BTN_JOYSTICK limit.

Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> [for the input.h part]
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Jiri Kosina 2010-01-04 12:20:56 +01:00
parent 92688c0c3c
commit cf2f765f18
2 changed files with 48 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

7
drivers/hid/hid-input.c
View file

@ -198,7 +198,12 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
switch (field->application) {
case HID_GD_MOUSE:
case HID_GD_POINTER: code += 0x110; break;
case HID_GD_JOYSTICK: code += 0x120; break;
case HID_GD_JOYSTICK:
if (code <= 0xf)
code += BTN_JOYSTICK;
else
code += BTN_TRIGGER_HAPPY;
break;
case HID_GD_GAMEPAD: code += 0x130; break;
default:
switch (field->physical) {