58037eb961
There have been many reports recently about broken HID devices, the diagnosis of which required users to recompile their kernels in order to be able to provide debugging output needed for coding a quirk for a particular device. This patch makes CONFIG_HID_DEBUG default y if !EMBEDDED and makes it possible to control debugging output produced by HID code by supplying 'debug=1' module parameter. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
108 lines
3 KiB
C
108 lines
3 KiB
C
/*
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* Force feedback support for Zeroplus based devices
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*
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* Copyright (c) 2005, 2006 Anssi Hannula <anssi.hannula@gmail.com>
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/input.h>
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#include <linux/usb.h>
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#include <linux/hid.h>
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#include "usbhid.h"
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struct zpff_device {
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struct hid_report *report;
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};
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static int hid_zpff_play(struct input_dev *dev, void *data,
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struct ff_effect *effect)
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{
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struct hid_device *hid = input_get_drvdata(dev);
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struct zpff_device *zpff = data;
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int left, right;
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/*
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* The following is specified the other way around in the Zeroplus
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* datasheet but the order below is correct for the XFX Executioner;
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* however it is possible that the XFX Executioner is an exception
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*/
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left = effect->u.rumble.strong_magnitude;
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right = effect->u.rumble.weak_magnitude;
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dbg_hid("called with 0x%04x 0x%04x\n", left, right);
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left = left * 0x7f / 0xffff;
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right = right * 0x7f / 0xffff;
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zpff->report->field[2]->value[0] = left;
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zpff->report->field[3]->value[0] = right;
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dbg_hid("running with 0x%02x 0x%02x\n", left, right);
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usbhid_submit_report(hid, zpff->report, USB_DIR_OUT);
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return 0;
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}
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int hid_zpff_init(struct hid_device *hid)
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{
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struct zpff_device *zpff;
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struct hid_report *report;
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struct hid_input *hidinput = list_entry(hid->inputs.next,
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struct hid_input, list);
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struct list_head *report_list =
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&hid->report_enum[HID_OUTPUT_REPORT].report_list;
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struct input_dev *dev = hidinput->input;
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int error;
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if (list_empty(report_list)) {
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printk(KERN_ERR "hid-zpff: no output report found\n");
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return -ENODEV;
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}
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report = list_entry(report_list->next, struct hid_report, list);
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if (report->maxfield < 4) {
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printk(KERN_ERR "hid-zpff: not enough fields in report\n");
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return -ENODEV;
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}
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zpff = kzalloc(sizeof(struct zpff_device), GFP_KERNEL);
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if (!zpff)
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return -ENOMEM;
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set_bit(FF_RUMBLE, dev->ffbit);
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error = input_ff_create_memless(dev, zpff, hid_zpff_play);
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if (error) {
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kfree(zpff);
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return error;
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}
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zpff->report = report;
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zpff->report->field[0]->value[0] = 0x00;
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zpff->report->field[1]->value[0] = 0x02;
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zpff->report->field[2]->value[0] = 0x00;
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zpff->report->field[3]->value[0] = 0x00;
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usbhid_submit_report(hid, zpff->report, USB_DIR_OUT);
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printk(KERN_INFO "Force feedback for Zeroplus based devices by "
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"Anssi Hannula <anssi.hannula@gmail.com>\n");
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return 0;
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}
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