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193 lines
4.2 KiB
193 lines
4.2 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Force feedback support for ACRUX game controllers |
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* |
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* From what I have gathered, these devices are mass produced in China |
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* by several vendors. They often share the same design as the original |
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* Xbox 360 controller. |
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* |
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* 1a34:0802 "ACRUX USB GAMEPAD 8116" |
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* - tested with an EXEQ EQ-PCU-02090 game controller. |
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* |
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* Copyright (c) 2010 Sergei Kolzun <[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_HID_ACRUX_FF |
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struct axff_device { |
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struct hid_report *report; |
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}; |
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static int axff_play(struct input_dev *dev, void *data, 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 axff_device *axff = data; |
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struct hid_report *report = axff->report; |
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int field_count = 0; |
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int left, right; |
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int i, j; |
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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 * 0xff / 0xffff; |
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right = right * 0xff / 0xffff; |
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for (i = 0; i < report->maxfield; i++) { |
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for (j = 0; j < report->field[i]->report_count; j++) { |
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report->field[i]->value[j] = |
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field_count % 2 ? right : left; |
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field_count++; |
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} |
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} |
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dbg_hid("running with 0x%02x 0x%02x", left, right); |
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hid_hw_request(hid, axff->report, HID_REQ_SET_REPORT); |
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return 0; |
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} |
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static int axff_init(struct hid_device *hid) |
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{ |
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struct axff_device *axff; |
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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 =&hid->report_enum[HID_OUTPUT_REPORT].report_list; |
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struct input_dev *dev; |
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int field_count = 0; |
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int i, j; |
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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_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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for (i = 0; i < report->maxfield; i++) { |
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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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field_count++; |
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} |
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} |
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if (field_count < 4 && hid->product != 0xf705) { |
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hid_err(hid, "not enough fields in the report: %d\n", |
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field_count); |
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return -ENODEV; |
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} |
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axff = kzalloc(sizeof(struct axff_device), GFP_KERNEL); |
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if (!axff) |
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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, axff, axff_play); |
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if (error) |
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goto err_free_mem; |
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axff->report = report; |
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hid_hw_request(hid, axff->report, HID_REQ_SET_REPORT); |
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hid_info(hid, "Force Feedback for ACRUX game controllers by Sergei Kolzun <[email protected]>\n"); |
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return 0; |
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err_free_mem: |
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kfree(axff); |
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return error; |
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} |
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#else |
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static inline int axff_init(struct hid_device *hid) |
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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 ax_probe(struct hid_device *hdev, const struct hid_device_id *id) |
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{ |
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int error; |
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dev_dbg(&hdev->dev, "ACRUX HID hardware probe...\n"); |
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error = hid_parse(hdev); |
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if (error) { |
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hid_err(hdev, "parse failed\n"); |
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return error; |
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} |
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error = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); |
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if (error) { |
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hid_err(hdev, "hw start failed\n"); |
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return error; |
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} |
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error = axff_init(hdev); |
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if (error) { |
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/* |
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* Do not fail device initialization completely as device |
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* may still be partially operable, just warn. |
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*/ |
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hid_warn(hdev, |
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"Failed to enable force feedback support, error: %d\n", |
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error); |
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} |
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/* |
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* We need to start polling device right away, otherwise |
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* it will go into a coma. |
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*/ |
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error = hid_hw_open(hdev); |
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if (error) { |
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dev_err(&hdev->dev, "hw open failed\n"); |
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hid_hw_stop(hdev); |
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return error; |
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} |
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return 0; |
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} |
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static void ax_remove(struct hid_device *hdev) |
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{ |
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hid_hw_close(hdev); |
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hid_hw_stop(hdev); |
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} |
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static const struct hid_device_id ax_devices[] = { |
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{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), }, |
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{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705), }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(hid, ax_devices); |
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static struct hid_driver ax_driver = { |
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.name = "acrux", |
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.id_table = ax_devices, |
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.probe = ax_probe, |
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.remove = ax_remove, |
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}; |
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module_hid_driver(ax_driver); |
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MODULE_AUTHOR("Sergei Kolzun"); |
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MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers"); |
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MODULE_LICENSE("GPL");
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