e894d0e3e0
Allocate wiimote device structure with all wiimote related data when registering new wiimote devices. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
130 lines
2.6 KiB
C
130 lines
2.6 KiB
C
/*
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* HID driver for Nintendo Wiimote devices
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* Copyright (c) 2011 David Herrmann
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/hid.h>
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#include <linux/module.h>
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#include "hid-ids.h"
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#define WIIMOTE_VERSION "0.1"
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#define WIIMOTE_NAME "Nintendo Wii Remote"
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struct wiimote_data {
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struct hid_device *hdev;
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};
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static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
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u8 *raw_data, int size)
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{
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if (size < 1)
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return -EINVAL;
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return 0;
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}
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static struct wiimote_data *wiimote_create(struct hid_device *hdev)
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{
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struct wiimote_data *wdata;
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wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
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if (!wdata)
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return NULL;
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wdata->hdev = hdev;
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hid_set_drvdata(hdev, wdata);
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return wdata;
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}
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static void wiimote_destroy(struct wiimote_data *wdata)
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{
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kfree(wdata);
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}
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static int wiimote_hid_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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struct wiimote_data *wdata;
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int ret;
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wdata = wiimote_create(hdev);
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if (!wdata) {
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hid_err(hdev, "Can't alloc device\n");
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return -ENOMEM;
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}
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ret = hid_parse(hdev);
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if (ret) {
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hid_err(hdev, "HID parse failed\n");
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goto err;
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}
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ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
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if (ret) {
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hid_err(hdev, "HW start failed\n");
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goto err;
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}
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hid_info(hdev, "New device registered\n");
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return 0;
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err:
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wiimote_destroy(wdata);
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return ret;
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}
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static void wiimote_hid_remove(struct hid_device *hdev)
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{
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struct wiimote_data *wdata = hid_get_drvdata(hdev);
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hid_info(hdev, "Device removed\n");
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hid_hw_stop(hdev);
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wiimote_destroy(wdata);
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}
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static const struct hid_device_id wiimote_hid_devices[] = {
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{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
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USB_DEVICE_ID_NINTENDO_WIIMOTE) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
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static struct hid_driver wiimote_hid_driver = {
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.name = "wiimote",
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.id_table = wiimote_hid_devices,
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.probe = wiimote_hid_probe,
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.remove = wiimote_hid_remove,
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.raw_event = wiimote_hid_event,
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};
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static int __init wiimote_init(void)
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{
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int ret;
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ret = hid_register_driver(&wiimote_hid_driver);
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if (ret)
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pr_err("Can't register wiimote hid driver\n");
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return ret;
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}
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static void __exit wiimote_exit(void)
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{
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hid_unregister_driver(&wiimote_hid_driver);
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}
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module_init(wiimote_init);
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module_exit(wiimote_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
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MODULE_DESCRIPTION(WIIMOTE_NAME " Device Driver");
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MODULE_VERSION(WIIMOTE_VERSION);
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