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HID: wiimote: Initialize IR cam on request 

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;