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HID: wiimote: Add force-feedback support

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The wiimote has a single rumble motor. This adds force feedback support for
wiimote devices with FF_RUMBLE. The rumble motor is very simple and only
supports an on/off switch so no complex ff-effects are supported.

This also removes the event callback that was registered before but unused. The
ff-device overwrites this callback, anyway.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
David Herrmann 2011-09-06 13:50:27 +02:00 committed by Jiri Kosina
parent c003ec2165
commit d020be9246
1 changed files with 28 additions and 3 deletions
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31
drivers/hid/hid-wiimote.c
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@ -305,9 +305,28 @@ static void wiimote_leds_set(struct led_classdev *led_dev,
}
}
static int wiimote_input_event(struct input_dev *dev, unsigned int type,
unsigned int code, int value)
static int wiimote_ff_play(struct input_dev *dev, void *data,
struct ff_effect *eff)
{
struct wiimote_data *wdata = input_get_drvdata(dev);
__u8 value;
unsigned long flags;
/*
* The wiimote supports only a single rumble motor so if any magnitude
* is set to non-zero then we start the rumble motor. If both are set to
* zero, we stop the rumble motor.
*/
if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
value = 1;
else
value = 0;
spin_lock_irqsave(&wdata->state.lock, flags);
wiiproto_req_rumble(wdata, value);
spin_unlock_irqrestore(&wdata->state.lock, flags);
return 0;
}
@ -480,7 +499,6 @@ static struct wiimote_data *wiimote_create(struct hid_device *hdev)
hid_set_drvdata(hdev, wdata);
input_set_drvdata(wdata->input, wdata);
wdata->input->event = wiimote_input_event;
wdata->input->open = wiimote_input_open;
wdata->input->close = wiimote_input_close;
wdata->input->dev.parent = &wdata->hdev->dev;
@ -494,6 +512,13 @@ static struct wiimote_data *wiimote_create(struct hid_device *hdev)
for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
set_bit(wiiproto_keymap[i], wdata->input->keybit);
set_bit(FF_RUMBLE, wdata->input->ffbit);
if (input_ff_create_memless(wdata->input, NULL, wiimote_ff_play)) {
input_free_device(wdata->input);
kfree(wdata);
return NULL;
}
spin_lock_init(&wdata->qlock);
INIT_WORK(&wdata->worker, wiimote_worker);