linux/drivers/hid/hid-pl.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
Based on 1 normalized pattern(s):

  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 this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

223 lines
5.5 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Force feedback support for PantherLord/GreenAsia based devices
*
* The devices are distributed under various names and the same USB device ID
* can be used in both adapters and actual game controllers.
*
* 0810:0001 "Twin USB Joystick"
* - tested with PantherLord USB/PS2 2in1 Adapter
* - contains two reports, one for each port (HID_QUIRK_MULTI_INPUT)
*
* 0e8f:0003 "GreenAsia Inc. USB Joystick "
* - tested with König Gaming gamepad
*
* 0e8f:0003 "GASIA USB Gamepad"
* - another version of the König gamepad
*
* 0f30:0111 "Saitek Color Rumble Pad"
*
* Copyright (c) 2007, 2009 Anssi Hannula <anssi.hannula@gmail.com>
*/
/*
*/
/* #define DEBUG */
#define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg)
#include <linux/input.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/hid.h>
#include "hid-ids.h"
#ifdef CONFIG_PANTHERLORD_FF
struct plff_device {
struct hid_report *report;
s32 maxval;
s32 *strong;
s32 *weak;
};
static int hid_plff_play(struct input_dev *dev, void *data,
struct ff_effect *effect)
{
struct hid_device *hid = input_get_drvdata(dev);
struct plff_device *plff = data;
int left, right;
left = effect->u.rumble.strong_magnitude;
right = effect->u.rumble.weak_magnitude;
debug("called with 0x%04x 0x%04x", left, right);
left = left * plff->maxval / 0xffff;
right = right * plff->maxval / 0xffff;
*plff->strong = left;
*plff->weak = right;
debug("running with 0x%02x 0x%02x", left, right);
hid_hw_request(hid, plff->report, HID_REQ_SET_REPORT);
return 0;
}
static int plff_init(struct hid_device *hid)
{
struct plff_device *plff;
struct hid_report *report;
struct hid_input *hidinput;
struct list_head *report_list =
&hid->report_enum[HID_OUTPUT_REPORT].report_list;
struct list_head *report_ptr = report_list;
struct input_dev *dev;
int error;
s32 maxval;
s32 *strong;
s32 *weak;
/* The device contains one output report per physical device, all
containing 1 field, which contains 4 ff00.0002 usages and 4 16bit
absolute values.
The input reports also contain a field which contains
8 ff00.0001 usages and 8 boolean values. Their meaning is
currently unknown.
A version of the 0e8f:0003 exists that has all the values in
separate fields and misses the extra input field, thus resembling
Zeroplus (hid-zpff) devices.
*/
if (list_empty(report_list)) {
hid_err(hid, "no output reports found\n");
return -ENODEV;
}
list_for_each_entry(hidinput, &hid->inputs, list) {
report_ptr = report_ptr->next;
if (report_ptr == report_list) {
hid_err(hid, "required output report is missing\n");
return -ENODEV;
}
report = list_entry(report_ptr, struct hid_report, list);
if (report->maxfield < 1) {
hid_err(hid, "no fields in the report\n");
return -ENODEV;
}
maxval = 0x7f;
if (report->field[0]->report_count >= 4) {
report->field[0]->value[0] = 0x00;
report->field[0]->value[1] = 0x00;
strong = &report->field[0]->value[2];
weak = &report->field[0]->value[3];
debug("detected single-field device");
} else if (report->field[0]->maxusage == 1 &&
report->field[0]->usage[0].hid ==
(HID_UP_LED | 0x43) &&
report->maxfield >= 4 &&
report->field[0]->report_count >= 1 &&
report->field[1]->report_count >= 1 &&
report->field[2]->report_count >= 1 &&
report->field[3]->report_count >= 1) {
report->field[0]->value[0] = 0x00;
report->field[1]->value[0] = 0x00;
strong = &report->field[2]->value[0];
weak = &report->field[3]->value[0];
if (hid->vendor == USB_VENDOR_ID_JESS2)
maxval = 0xff;
debug("detected 4-field device");
} else {
hid_err(hid, "not enough fields or values\n");
return -ENODEV;
}
plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL);
if (!plff)
return -ENOMEM;
dev = hidinput->input;
set_bit(FF_RUMBLE, dev->ffbit);
error = input_ff_create_memless(dev, plff, hid_plff_play);
if (error) {
kfree(plff);
return error;
}
plff->report = report;
plff->strong = strong;
plff->weak = weak;
plff->maxval = maxval;
*strong = 0x00;
*weak = 0x00;
hid_hw_request(hid, plff->report, HID_REQ_SET_REPORT);
}
hid_info(hid, "Force feedback for PantherLord/GreenAsia devices by Anssi Hannula <anssi.hannula@gmail.com>\n");
return 0;
}
#else
static inline int plff_init(struct hid_device *hid)
{
return 0;
}
#endif
static int pl_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret;
if (id->driver_data)
hdev->quirks |= HID_QUIRK_MULTI_INPUT;
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "parse failed\n");
goto err;
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
if (ret) {
hid_err(hdev, "hw start failed\n");
goto err;
}
plff_init(hdev);
return 0;
err:
return ret;
}
static const struct hid_device_id pl_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR),
.driver_data = 1 }, /* Twin USB Joystick */
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR),
.driver_data = 1 }, /* Twin USB Joystick */
{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003), },
{ HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD), },
{ }
};
MODULE_DEVICE_TABLE(hid, pl_devices);
static struct hid_driver pl_driver = {
.name = "pantherlord",
.id_table = pl_devices,
.probe = pl_probe,
};
module_hid_driver(pl_driver);
MODULE_LICENSE("GPL");