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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
166 lines
3.9 KiB
C
166 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Force feedback support for Betop 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 both adapters and actual game controllers.
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*
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* 0x11c2:0x2208 "BTP2185 BFM mode Joystick"
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* - tested with BTP2185 BFM Mode.
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*
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* 0x11C0:0x5506 "BTP2185 PC mode Joystick"
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* - tested with BTP2185 PC Mode.
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*
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* 0x8380:0x1850 "BTP2185 V2 PC mode USB Gamepad"
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* - tested with BTP2185 PC Mode with another version.
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*
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* 0x20bc:0x5500 "BTP2185 V2 BFM mode Joystick"
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* - tested with BTP2171s.
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* Copyright (c) 2014 Huang Bo <huangbobupt@163.com>
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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/module.h>
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#include <linux/hid.h>
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#include "hid-ids.h"
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struct betopff_device {
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struct hid_report *report;
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};
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static int hid_betopff_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 betopff_device *betopff = data;
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__u16 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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betopff->report->field[2]->value[0] = left / 256;
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betopff->report->field[3]->value[0] = right / 256;
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hid_hw_request(hid, betopff->report, HID_REQ_SET_REPORT);
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return 0;
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}
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static int betopff_init(struct hid_device *hid)
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{
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struct betopff_device *betopff;
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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 input_dev *dev;
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int error;
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int i, j;
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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_first_entry(&hid->inputs, 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 = list_first_entry(report_list, struct hid_report, list);
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/*
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* Actually there are 4 fields for 4 Bytes as below:
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* -----------------------------------------
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* Byte0 Byte1 Byte2 Byte3
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* 0x00 0x00 left_motor right_motor
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* -----------------------------------------
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* Do init them with default value.
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*/
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if (report->maxfield < 4) {
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hid_err(hid, "not enough fields in the report: %d\n",
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report->maxfield);
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return -ENODEV;
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}
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for (i = 0; i < report->maxfield; i++) {
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if (report->field[i]->report_count < 1) {
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hid_err(hid, "no values in the field\n");
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return -ENODEV;
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}
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for (j = 0; j < report->field[i]->report_count; j++) {
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report->field[i]->value[j] = 0x00;
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}
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}
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betopff = kzalloc_obj(*betopff);
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if (!betopff)
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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, betopff, hid_betopff_play);
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if (error) {
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kfree(betopff);
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return error;
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}
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betopff->report = report;
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hid_hw_request(hid, betopff->report, HID_REQ_SET_REPORT);
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hid_info(hid, "Force feedback for betop devices by huangbo <huangbobupt@163.com>\n");
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return 0;
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}
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static int betop_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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if (id->driver_data)
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hdev->quirks |= HID_QUIRK_MULTI_INPUT;
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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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betopff_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 betop_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185BFM, 0x2208) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185PC, 0x5506) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2PC, 0x1850) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2BFM, 0x5500) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, betop_devices);
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static struct hid_driver betop_driver = {
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.name = "betop",
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.id_table = betop_devices,
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.probe = betop_probe,
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};
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module_hid_driver(betop_driver);
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MODULE_DESCRIPTION("Force feedback support for Betop based devices");
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MODULE_LICENSE("GPL");
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