hid-petalynx.c

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/*
 *  HID driver for some petalynx "special" devices
 *
 *  Copyright (c) 1999 Andreas Gal
 *  Copyright (c) 2000-2005 Vojtech Pavlik <[email protected]>
 *  Copyright (c) 2005 Michael Haboustak <[email protected]> for Concept2, Inc
 *  Copyright (c) 2006-2007 Jiri Kosina
 *  Copyright (c) 2008 Jiri Slaby
 */

/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 */

#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>

#include "hid-ids.h"

/* Petalynx Maxter Remote has maximum for consumer page set too low */
static __u8 *pl_report_fixup(struct hid_device *hdev, __u8 *rdesc,
        unsigned int *rsize)
{
    if (*rsize >= 60 && rdesc[39] == 0x2a && rdesc[40] == 0xf5 &&
            rdesc[41] == 0x00 && rdesc[59] == 0x26 &&
            rdesc[60] == 0xf9 && rdesc[61] == 0x00) {
        hid_info(hdev, "fixing up Petalynx Maxter Remote report descriptor\n");
        rdesc[60] = 0xfa;
        rdesc[40] = 0xfa;
    }
    return rdesc;
}

#define pl_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
                    EV_KEY, (c))
static int pl_input_mapping(struct hid_device *hdev, struct hid_input *hi,
        struct hid_field *field, struct hid_usage *usage,
        unsigned long **bit, int *max)
{
    if ((usage->hid & HID_USAGE_PAGE) == HID_UP_LOGIVENDOR) {
        switch (usage->hid & HID_USAGE) {
        case 0x05a: pl_map_key_clear(KEY_TEXT);     break;
        case 0x05b: pl_map_key_clear(KEY_RED);      break;
        case 0x05c: pl_map_key_clear(KEY_GREEN);    break;
        case 0x05d: pl_map_key_clear(KEY_YELLOW);   break;
        case 0x05e: pl_map_key_clear(KEY_BLUE);     break;
        default:
            return 0;
        }
        return 1;
    }

    if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
        switch (usage->hid & HID_USAGE) {
        case 0x0f6: pl_map_key_clear(KEY_NEXT);     break;
        case 0x0fa: pl_map_key_clear(KEY_BACK);     break;
        default:
            return 0;
        }
        return 1;
    }

    return 0;
}

static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
    int ret;

    hdev->quirks |= HID_QUIRK_NOGET;

    ret = hid_parse(hdev);
    if (ret) {
        hid_err(hdev, "parse failed\n");
        goto err_free;
    }

    ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
    if (ret) {
        hid_err(hdev, "hw start failed\n");
        goto err_free;
    }

    return 0;
err_free:
    return ret;
}

static const struct hid_device_id pl_devices[] = {
    { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
    { }
};
MODULE_DEVICE_TABLE(hid, pl_devices);

static struct hid_driver pl_driver = {
    .name = "petalynx",
    .id_table = pl_devices,
    .report_fixup = pl_report_fixup,
    .input_mapping = pl_input_mapping,
    .probe = pl_probe,
};

static int __init pl_init(void)
{
    return hid_register_driver(&pl_driver);
}

static void __exit pl_exit(void)
{
    hid_unregister_driver(&pl_driver);
}

module_init(pl_init);
module_exit(pl_exit);
MODULE_LICENSE("GPL");