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HID: wiimote: Register input device in wiimote hid driver

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Register input device so the wiimote can report input events on
it. We do not use HIDINPUT because the wiimote does not provide any
descriptor table which might be used by HIDINPUT. So we avoid
having HIDINPUT parse the wiimote descriptor and create unrelated
or unknown event flags. Instead we register our own input device
that we have full control of.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
David Herrmann 2011-07-05 13:45:11 +02:00 committed by Jiri Kosina
parent e894d0e3e0
commit 672bc4e090
1 changed files with 34 additions and 0 deletions
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34
drivers/hid/hid-wiimote.c
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@ -10,7 +10,9 @@
* any later version.
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/input.h>
#include <linux/module.h>
#include "hid-ids.h"
@ -19,8 +21,15 @@
struct wiimote_data {
struct hid_device *hdev;
struct input_dev *input;
};
static int wiimote_input_event(struct input_dev *dev, unsigned int type,
unsigned int code, int value)
{
return 0;
}
static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
u8 *raw_data, int size)
{
@ -38,9 +47,24 @@ static struct wiimote_data *wiimote_create(struct hid_device *hdev)
if (!wdata)
return NULL;
wdata->input = input_allocate_device();
if (!wdata->input) {
kfree(wdata);
return NULL;
}
wdata->hdev = hdev;
hid_set_drvdata(hdev, wdata);
input_set_drvdata(wdata->input, wdata);
wdata->input->event = wiimote_input_event;
wdata->input->dev.parent = &wdata->hdev->dev;
wdata->input->id.bustype = wdata->hdev->bus;
wdata->input->id.vendor = wdata->hdev->vendor;
wdata->input->id.product = wdata->hdev->product;
wdata->input->id.version = wdata->hdev->version;
wdata->input->name = WIIMOTE_NAME;
return wdata;
}
@ -73,10 +97,19 @@ static int wiimote_hid_probe(struct hid_device *hdev,
goto err;
}
ret = input_register_device(wdata->input);
if (ret) {
hid_err(hdev, "Cannot register input device\n");
goto err_stop;
}
hid_info(hdev, "New device registered\n");
return 0;
err_stop:
hid_hw_stop(hdev);
err:
input_free_device(wdata->input);
wiimote_destroy(wdata);
return ret;
}
@ -87,6 +120,7 @@ static void wiimote_hid_remove(struct hid_device *hdev)
hid_info(hdev, "Device removed\n");
hid_hw_stop(hdev);
input_unregister_device(wdata->input);
wiimote_destroy(wdata);
}