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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285// 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 dr_input_configured(struct hid_device *hid, struct hid_input *hidinput){ struct drff_device *drff; struct hid_report *report; struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; struct input_dev *dev = hidinput->input; int error;
if (!list_is_first(&hidinput->list, &hid->inputs)) return 0;
if (hid->product != 0x0006) return 0;
report = list_first_entry_or_null(report_list, struct hid_report, list); if (!report) { hid_err(hid, "no output reports found\n"); return -ENODEV; } 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_obj(struct drff_device); if (!drff) return -ENOMEM;
drff->report = report; set_bit(FF_RUMBLE, dev->ffbit);
error = input_ff_create_memless(dev, drff, drff_play); if (error) { kfree(drff); return error; }
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;}#elsestatic inline int dr_input_configured(struct hid_device *hid, struct hid_input *hidinput){ 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 const __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 const __u8 *dr_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize){ switch (hdev->product) { case 0x0011: if (*rsize == PID0011_RDESC_ORIG_SIZE) { *rsize = sizeof(pid0011_rdesc_fixed); return 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 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, .input_mapping = dr_input_mapping, .input_configured = dr_input_configured,};module_hid_driver(dr_driver);
MODULE_DESCRIPTION("Force feedback support for DragonRise Inc. game controllers");MODULE_LICENSE("GPL");