diff options
Diffstat (limited to 'drivers/hid/hid-axff.c')
| -rw-r--r-- | drivers/hid/hid-axff.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/drivers/hid/hid-axff.c b/drivers/hid/hid-axff.c new file mode 100644 index 000000000000..f42ee140738a --- /dev/null +++ b/drivers/hid/hid-axff.c @@ -0,0 +1,172 @@ +/* + * Force feedback support for ACRUX game controllers + * + * From what I have gathered, these devices are mass produced in China + * by several vendors. They often share the same design as the original + * Xbox 360 controller. + * + * 1a34:0802 "ACRUX USB GAMEPAD 8116" + * - tested with a EXEQ EQ-PCU-02090 game controller. + * + * Copyright (c) 2010 Sergei Kolzun <x0r@dv-life.ru> + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/input.h> +#include <linux/slab.h> +#include <linux/usb.h> +#include <linux/hid.h> + +#include "hid-ids.h" +#include "usbhid/usbhid.h" + +struct axff_device { + struct hid_report *report; +}; + +static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect) +{ + struct hid_device *hid = input_get_drvdata(dev); + struct axff_device *axff = data; + int left, right; + + left = effect->u.rumble.strong_magnitude; + right = effect->u.rumble.weak_magnitude; + + dbg_hid("called with 0x%04x 0x%04x", left, right); + + left = left * 0xff / 0xffff; + right = right * 0xff / 0xffff; + + axff->report->field[0]->value[0] = left; + axff->report->field[1]->value[0] = right; + axff->report->field[2]->value[0] = left; + axff->report->field[3]->value[0] = right; + dbg_hid("running with 0x%02x 0x%02x", left, right); + usbhid_submit_report(hid, axff->report, USB_DIR_OUT); + + return 0; +} + +static int axff_init(struct hid_device *hid) +{ + struct axff_device *axff; + struct hid_report *report; + struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list); + struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].report_list; + struct input_dev *dev = hidinput->input; + int error; + + if (list_empty(report_list)) { + dev_err(&hid->dev, "no output reports found\n"); + return -ENODEV; + } + + report = list_first_entry(report_list, struct hid_report, list); + + if (report->maxfield < 4) { + dev_err(&hid->dev, "no fields in the report: %d\n", report->maxfield); + return -ENODEV; + } + + axff = kzalloc(sizeof(struct axff_device), GFP_KERNEL); + if (!axff) + return -ENOMEM; + + set_bit(FF_RUMBLE, dev->ffbit); + + error = input_ff_create_memless(dev, axff, axff_play); + if (error) + goto err_free_mem; + + axff->report = report; + axff->report->field[0]->value[0] = 0x00; + axff->report->field[1]->value[0] = 0x00; + axff->report->field[2]->value[0] = 0x00; + axff->report->field[3]->value[0] = 0x00; + usbhid_submit_report(hid, axff->report, USB_DIR_OUT); + + dev_info(&hid->dev, "Force Feedback for ACRUX game controllers by Sergei Kolzun<x0r@dv-life.ru>\n"); + + return 0; + +err_free_mem: + kfree(axff); + return error; +} + +static int ax_probe(struct hid_device *hdev, const struct hid_device_id *id) +{ + int error; + + dev_dbg(&hdev->dev, "ACRUX HID hardware probe..."); + + error = hid_parse(hdev); + if (error) { + dev_err(&hdev->dev, "parse failed\n"); + return error; + } + + error = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); + if (error) { + dev_err(&hdev->dev, "hw start failed\n"); + return error; + } + + error = axff_init(hdev); + if (error) { + /* + * Do not fail device initialization completely as device + * may still be partially operable, just warn. + */ + dev_warn(&hdev->dev, + "Failed to enable force feedback support, error: %d\n", + error); + } + + return 0; +} + +static const struct hid_device_id ax_devices[] = { + { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), }, + { } +}; +MODULE_DEVICE_TABLE(hid, ax_devices); + +static struct hid_driver ax_driver = { + .name = "acrux", + .id_table = ax_devices, + .probe = ax_probe, +}; + +static int __init ax_init(void) +{ + return hid_register_driver(&ax_driver); +} + +static void __exit ax_exit(void) +{ + hid_unregister_driver(&ax_driver); +} + +module_init(ax_init); +module_exit(ax_exit); + +MODULE_AUTHOR("Sergei Kolzun"); +MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers"); +MODULE_LICENSE("GPL"); |