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172 lines
4.0 KiB
172 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Force feedback support for GreenAsia (Product ID 0x12) based devices |
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* |
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* The devices are distributed under various names and the same USB device ID |
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* can be used in many game controllers. |
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* |
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* 0e8f:0012 "GreenAsia Inc. USB Joystick " |
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* - tested with MANTA Warior MM816 and SpeedLink Strike2 SL-6635. |
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* |
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* Copyright (c) 2008 Lukasz Lubojanski <[email protected]> |
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*/ |
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/* |
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*/ |
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#include <linux/input.h> |
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#include <linux/slab.h> |
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#include <linux/hid.h> |
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#include <linux/module.h> |
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#include "hid-ids.h" |
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#ifdef CONFIG_GREENASIA_FF |
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struct gaff_device { |
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struct hid_report *report; |
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}; |
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static int hid_gaff_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 gaff_device *gaff = data; |
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int left, right; |
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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", left, right); |
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left = left * 0xfe / 0xffff; |
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right = right * 0xfe / 0xffff; |
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gaff->report->field[0]->value[0] = 0x51; |
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gaff->report->field[0]->value[1] = 0x0; |
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gaff->report->field[0]->value[2] = right; |
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gaff->report->field[0]->value[3] = 0; |
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gaff->report->field[0]->value[4] = left; |
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gaff->report->field[0]->value[5] = 0; |
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dbg_hid("running with 0x%02x 0x%02x", left, right); |
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hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); |
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gaff->report->field[0]->value[0] = 0xfa; |
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gaff->report->field[0]->value[1] = 0xfe; |
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gaff->report->field[0]->value[2] = 0x0; |
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gaff->report->field[0]->value[4] = 0x0; |
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hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); |
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return 0; |
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} |
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static int gaff_init(struct hid_device *hid) |
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{ |
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struct gaff_device *gaff; |
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struct hid_report *report; |
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struct hid_input *hidinput; |
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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 list_head *report_ptr = report_list; |
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struct input_dev *dev; |
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int error; |
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if (list_empty(&hid->inputs)) { |
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hid_err(hid, "no inputs found\n"); |
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return -ENODEV; |
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} |
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hidinput = list_entry(hid->inputs.next, struct hid_input, list); |
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dev = hidinput->input; |
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if (list_empty(report_list)) { |
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hid_err(hid, "no output reports found\n"); |
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return -ENODEV; |
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} |
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report_ptr = report_ptr->next; |
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report = list_entry(report_ptr, struct hid_report, list); |
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if (report->maxfield < 1) { |
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hid_err(hid, "no fields in the report\n"); |
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return -ENODEV; |
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} |
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if (report->field[0]->report_count < 6) { |
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hid_err(hid, "not enough values in the field\n"); |
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return -ENODEV; |
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} |
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gaff = kzalloc(sizeof(struct gaff_device), GFP_KERNEL); |
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if (!gaff) |
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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, gaff, hid_gaff_play); |
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if (error) { |
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kfree(gaff); |
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return error; |
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} |
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gaff->report = report; |
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gaff->report->field[0]->value[0] = 0x51; |
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gaff->report->field[0]->value[1] = 0x00; |
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gaff->report->field[0]->value[2] = 0x00; |
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gaff->report->field[0]->value[3] = 0x00; |
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hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); |
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gaff->report->field[0]->value[0] = 0xfa; |
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gaff->report->field[0]->value[1] = 0xfe; |
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hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); |
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hid_info(hid, "Force Feedback for GreenAsia 0x12 devices by Lukasz Lubojanski <[email protected]>\n"); |
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return 0; |
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} |
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#else |
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static inline int gaff_init(struct hid_device *hdev) |
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{ |
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return 0; |
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} |
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#endif |
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static int ga_probe(struct hid_device *hdev, const struct hid_device_id *id) |
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{ |
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int ret; |
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dev_dbg(&hdev->dev, "Greenasia HID hardware probe..."); |
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ret = hid_parse(hdev); |
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if (ret) { |
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hid_err(hdev, "parse failed\n"); |
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goto err; |
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} |
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ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); |
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if (ret) { |
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hid_err(hdev, "hw start failed\n"); |
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goto err; |
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} |
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gaff_init(hdev); |
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return 0; |
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err: |
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return ret; |
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} |
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static const struct hid_device_id ga_devices[] = { |
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{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012), }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(hid, ga_devices); |
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static struct hid_driver ga_driver = { |
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.name = "greenasia", |
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.id_table = ga_devices, |
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.probe = ga_probe, |
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}; |
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module_hid_driver(ga_driver); |
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MODULE_LICENSE("GPL");
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