diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/hid/hid-dr.c | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/drivers/hid/hid-dr.c b/drivers/hid/hid-dr.c new file mode 100644 index 000000000..947f19f86 --- /dev/null +++ b/drivers/hid/hid-dr.c @@ -0,0 +1,319 @@ +// 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; + struct list_head *report_list = + &hid->report_enum[HID_OUTPUT_REPORT].report_list; + struct input_dev *dev; + int error; + + if (list_empty(&hid->inputs)) { + hid_err(hid, "no inputs found\n"); + return -ENODEV; + } + hidinput = list_first_entry(&hid->inputs, struct hid_input, list); + dev = hidinput->input; + + 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"); |