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alistair23-linux/drivers/hid/hid-dr.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

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Force feedback support for DragonRise Inc. game controllers
*
* From what I have gathered, these devices are mass produced in China and are
* distributed under several vendors. They often share the same design as
* the original PlayStation DualShock controller.
*
* 0079:0006 "DragonRise Inc. Generic USB Joystick "
* - tested with a Tesun USB-703 game controller.
*
* Copyright (c) 2009 Richard Walmsley <richwalm@gmail.com>
*/
/*
*/
#include <linux/input.h>
#include <linux/slab.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
#ifdef CONFIG_DRAGONRISE_FF
struct drff_device {
struct hid_report *report;
};
static int drff_play(struct input_dev *dev, void *data,
struct ff_effect *effect)
{
struct hid_device *hid = input_get_drvdata(dev);
struct drff_device *drff = data;
int strong, weak;
strong = effect->u.rumble.strong_magnitude;
weak = effect->u.rumble.weak_magnitude;
dbg_hid("called with 0x%04x 0x%04x", strong, weak);
if (strong || weak) {
strong = strong * 0xff / 0xffff;
weak = weak * 0xff / 0xffff;
/* While reverse engineering this device, I found that when
this value is set, it causes the strong rumble to function
at a near maximum speed, so we'll bypass it. */
if (weak == 0x0a)
weak = 0x0b;
drff->report->field[0]->value[0] = 0x51;
drff->report->field[0]->value[1] = 0x00;
drff->report->field[0]->value[2] = weak;
drff->report->field[0]->value[4] = strong;
hid_hw_request(hid, drff->report, HID_REQ_SET_REPORT);
drff->report->field[0]->value[0] = 0xfa;
drff->report->field[0]->value[1] = 0xfe;
} else {
drff->report->field[0]->value[0] = 0xf3;
drff->report->field[0]->value[1] = 0x00;
}
drff->report->field[0]->value[2] = 0x00;
drff->report->field[0]->value[4] = 0x00;
dbg_hid("running with 0x%02x 0x%02x", strong, weak);
hid_hw_request(hid, drff->report, HID_REQ_SET_REPORT);
return 0;
}
static int drff_init(struct hid_device *hid)
{
struct drff_device *drff;
struct hid_report *report;
struct hid_input *hidinput = list_first_entry(&hid->inputs,
struct hid_input, list);
struct list_head *report_list =
&hid->report_enum[HID_OUTPUT_REPORT].report_list;
struct input_dev *dev = hidinput->input;
int error;
if (list_empty(report_list)) {
hid_err(hid, "no output reports found\n");
return -ENODEV;
}
report = list_first_entry(report_list, struct hid_report, list);
if (report->maxfield < 1) {
hid_err(hid, "no fields in the report\n");
return -ENODEV;
}
if (report->field[0]->report_count < 7) {
hid_err(hid, "not enough values in the field\n");
return -ENODEV;
}
drff = kzalloc(sizeof(struct drff_device), GFP_KERNEL);
if (!drff)
return -ENOMEM;
set_bit(FF_RUMBLE, dev->ffbit);
error = input_ff_create_memless(dev, drff, drff_play);
if (error) {
kfree(drff);
return error;
}
drff->report = report;
drff->report->field[0]->value[0] = 0xf3;
drff->report->field[0]->value[1] = 0x00;
drff->report->field[0]->value[2] = 0x00;
drff->report->field[0]->value[3] = 0x00;
drff->report->field[0]->value[4] = 0x00;
drff->report->field[0]->value[5] = 0x00;
drff->report->field[0]->value[6] = 0x00;
hid_hw_request(hid, drff->report, HID_REQ_SET_REPORT);
hid_info(hid, "Force Feedback for DragonRise Inc. "
"game controllers by Richard Walmsley <richwalm@gmail.com>\n");
return 0;
}
#else
static inline int drff_init(struct hid_device *hid)
{
return 0;
}
#endif
/*
* The original descriptor of joystick with PID 0x0011, represented by DVTech PC
* JS19. It seems both copied from another device and a result of confusion
* either about the specification or about the program used to create the
* descriptor. In any case, it's a wonder it works on Windows.
*
* Usage Page (Desktop), ; Generic desktop controls (01h)
* Usage (Joystick), ; Joystick (04h, application collection)
* Collection (Application),
* Collection (Logical),
* Report Size (8),
* Report Count (5),
* Logical Minimum (0),
* Logical Maximum (255),
* Physical Minimum (0),
* Physical Maximum (255),
* Usage (X), ; X (30h, dynamic value)
* Usage (X), ; X (30h, dynamic value)
* Usage (X), ; X (30h, dynamic value)
* Usage (X), ; X (30h, dynamic value)
* Usage (Y), ; Y (31h, dynamic value)
* Input (Variable),
* Report Size (4),
* Report Count (1),
* Logical Maximum (7),
* Physical Maximum (315),
* Unit (Degrees),
* Usage (00h),
* Input (Variable, Null State),
* Unit,
* Report Size (1),
* Report Count (10),
* Logical Maximum (1),
* Physical Maximum (1),
* Usage Page (Button), ; Button (09h)
* Usage Minimum (01h),
* Usage Maximum (0Ah),
* Input (Variable),
* Usage Page (FF00h), ; FF00h, vendor-defined
* Report Size (1),
* Report Count (10),
* Logical Maximum (1),
* Physical Maximum (1),
* Usage (01h),
* Input (Variable),
* End Collection,
* Collection (Logical),
* Report Size (8),
* Report Count (4),
* Physical Maximum (255),
* Logical Maximum (255),
* Usage (02h),
* Output (Variable),
* End Collection,
* End Collection
*/
/* Size of the original descriptor of the PID 0x0011 joystick */
#define PID0011_RDESC_ORIG_SIZE 101
/* Fixed report descriptor for PID 0x011 joystick */
static __u8 pid0011_rdesc_fixed[] = {
0x05, 0x01, /* Usage Page (Desktop), */
0x09, 0x04, /* Usage (Joystick), */
0xA1, 0x01, /* Collection (Application), */
0xA1, 0x02, /* Collection (Logical), */
0x14, /* Logical Minimum (0), */
0x75, 0x08, /* Report Size (8), */
0x95, 0x03, /* Report Count (3), */
0x81, 0x01, /* Input (Constant), */
0x26, 0xFF, 0x00, /* Logical Maximum (255), */
0x95, 0x02, /* Report Count (2), */
0x09, 0x30, /* Usage (X), */
0x09, 0x31, /* Usage (Y), */
0x81, 0x02, /* Input (Variable), */
0x75, 0x01, /* Report Size (1), */
0x95, 0x04, /* Report Count (4), */
0x81, 0x01, /* Input (Constant), */
0x25, 0x01, /* Logical Maximum (1), */
0x95, 0x0A, /* Report Count (10), */
0x05, 0x09, /* Usage Page (Button), */
0x19, 0x01, /* Usage Minimum (01h), */
0x29, 0x0A, /* Usage Maximum (0Ah), */
0x81, 0x02, /* Input (Variable), */
0x95, 0x0A, /* Report Count (10), */
0x81, 0x01, /* Input (Constant), */
0xC0, /* End Collection, */
0xC0 /* End Collection */
};
static __u8 *dr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
switch (hdev->product) {
case 0x0011:
if (*rsize == PID0011_RDESC_ORIG_SIZE) {
rdesc = pid0011_rdesc_fixed;
*rsize = sizeof(pid0011_rdesc_fixed);
}
break;
}
return rdesc;
}
#define map_abs(c) hid_map_usage(hi, usage, bit, max, EV_ABS, (c))
#define map_rel(c) hid_map_usage(hi, usage, bit, max, EV_REL, (c))
static int dr_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
switch (usage->hid) {
/*
* revert to the old hid-input behavior where axes
* can be randomly assigned when hid->usage is reused.
*/
case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
if (field->flags & HID_MAIN_ITEM_RELATIVE)
map_rel(usage->hid & 0xf);
else
map_abs(usage->hid & 0xf);
return 1;
}
return 0;
}
static int dr_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret;
dev_dbg(&hdev->dev, "DragonRise Inc. HID hardware probe...");
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;
}
switch (hdev->product) {
case 0x0006:
ret = drff_init(hdev);
if (ret) {
dev_err(&hdev->dev, "force feedback init failed\n");
hid_hw_stop(hdev);
goto err;
}
break;
}
return 0;
err:
return ret;
}
static const struct hid_device_id dr_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006), },
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011), },
{ }
};
MODULE_DEVICE_TABLE(hid, dr_devices);
static struct hid_driver dr_driver = {
.name = "dragonrise",
.id_table = dr_devices,
.report_fixup = dr_report_fixup,
.probe = dr_probe,
.input_mapping = dr_input_mapping,
};
module_hid_driver(dr_driver);
MODULE_LICENSE("GPL");
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