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HID: wiimote: Initialize IR cam on request

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Initialize the IR cam if the related input device is opened by userspace. Stop
IR cam again if userspace is no longer interested in its data events.

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 13:50:37 +02:00 committed by Jiri Kosina
parent fc221cda3b
commit 0370d7cb30
1 changed files with 28 additions and 0 deletions
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28
drivers/hid/hid-wiimote.c
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@ -668,6 +668,32 @@ static void wiimote_accel_close(struct input_dev *dev)
hid_hw_close(wdata->hdev);
}
static int wiimote_ir_open(struct input_dev *dev)
{
struct wiimote_data *wdata = input_get_drvdata(dev);
int ret;
ret = hid_hw_open(wdata->hdev);
if (ret)
return ret;
ret = wiimote_init_ir(wdata, WIIPROTO_FLAG_IR_BASIC);
if (ret) {
hid_hw_close(wdata->hdev);
return ret;
}
return 0;
}
static void wiimote_ir_close(struct input_dev *dev)
{
struct wiimote_data *wdata = input_get_drvdata(dev);
wiimote_init_ir(wdata, 0);
hid_hw_close(wdata->hdev);
}
static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
{
input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_LEFT],
@ -1062,6 +1088,8 @@ static struct wiimote_data *wiimote_create(struct hid_device *hdev)
goto err_ir;
input_set_drvdata(wdata->ir, wdata);
wdata->ir->open = wiimote_ir_open;
wdata->ir->close = wiimote_ir_close;
wdata->ir->dev.parent = &wdata->hdev->dev;
wdata->ir->id.bustype = wdata->hdev->bus;
wdata->ir->id.vendor = wdata->hdev->vendor;