mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-28 12:53:14 +01:00
Dmitry Torokhov
b252dfe174
The driver currently initializes force-feedback in its probe() function after calling hid_hw_start(). This is racy as the input device is already registered and visible to userspace at that point. Move the FF initialization to the .input_configured() callback to ensure the device is fully prepared before registration. Assisted-by: Gemini:gemini-3.1-pro Signed-off-by: Dmitry Torokhov <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
148 lines
3.9 KiB
C
148 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Force feedback support for Mayflash game controller adapters.
|
|
*
|
|
* These devices are manufactured by Mayflash but identify themselves
|
|
* using the vendor ID of DragonRise Inc.
|
|
*
|
|
* Tested with:
|
|
* 0079:1801 "DragonRise Inc. Mayflash PS3 Game Controller Adapter"
|
|
* 0079:1803 "DragonRise Inc. Mayflash Wireless Sensor DolphinBar"
|
|
* 0079:1843 "DragonRise Inc. Mayflash GameCube Game Controller Adapter"
|
|
* 0079:1844 "DragonRise Inc. Mayflash GameCube Game Controller Adapter (v04)"
|
|
*
|
|
* The following adapters probably work too, but need to be tested:
|
|
* 0079:1800 "DragonRise Inc. Mayflash WIIU Game Controller Adapter"
|
|
*
|
|
* Copyright (c) 2016-2017 Marcel Hasler <[email protected]>
|
|
*/
|
|
|
|
/*
|
|
*/
|
|
|
|
#include <linux/input.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/hid.h>
|
|
#include <linux/module.h>
|
|
|
|
#include "hid-ids.h"
|
|
|
|
struct mf_device {
|
|
struct hid_report *report;
|
|
};
|
|
|
|
static int mf_play(struct input_dev *dev, void *data, struct ff_effect *effect)
|
|
{
|
|
struct hid_device *hid = input_get_drvdata(dev);
|
|
struct mf_device *mf = data;
|
|
int strong, weak;
|
|
|
|
strong = effect->u.rumble.strong_magnitude;
|
|
weak = effect->u.rumble.weak_magnitude;
|
|
|
|
dbg_hid("Called with 0x%04x 0x%04x.\n", strong, weak);
|
|
|
|
strong = strong * 0xff / 0xffff;
|
|
weak = weak * 0xff / 0xffff;
|
|
|
|
dbg_hid("Running with 0x%02x 0x%02x.\n", strong, weak);
|
|
|
|
mf->report->field[0]->value[0] = weak;
|
|
mf->report->field[0]->value[1] = strong;
|
|
hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mf_input_configured(struct hid_device *hid, struct hid_input *hidinput)
|
|
{
|
|
struct mf_device *mf;
|
|
struct list_head *report_list =
|
|
&hid->report_enum[HID_OUTPUT_REPORT].report_list;
|
|
struct hid_report *report;
|
|
struct input_dev *dev = hidinput->input;
|
|
int error;
|
|
|
|
if (!list_is_first(&hidinput->list, &hid->inputs))
|
|
return 0;
|
|
|
|
report = list_first_entry_or_null(report_list, struct hid_report, list);
|
|
if (!report) {
|
|
hid_err(hid, "no output reports found\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (report->maxfield < 1 || report->field[0]->report_count < 2) {
|
|
hid_err(hid, "Invalid report, this should never happen!\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
mf = kzalloc_obj(struct mf_device);
|
|
if (!mf)
|
|
return -ENOMEM;
|
|
|
|
mf->report = report;
|
|
set_bit(FF_RUMBLE, dev->ffbit);
|
|
|
|
error = input_ff_create_memless(dev, mf, mf_play);
|
|
if (error) {
|
|
kfree(mf);
|
|
return error;
|
|
}
|
|
|
|
mf->report->field[0]->value[0] = 0x00;
|
|
mf->report->field[0]->value[1] = 0x00;
|
|
hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mf_probe(struct hid_device *hid, const struct hid_device_id *id)
|
|
{
|
|
int error;
|
|
|
|
dev_dbg(&hid->dev, "Mayflash HID hardware probe...\n");
|
|
|
|
/* Apply quirks as needed */
|
|
hid->quirks |= id->driver_data;
|
|
|
|
error = hid_parse(hid);
|
|
if (error) {
|
|
hid_err(hid, "HID parse failed.\n");
|
|
return error;
|
|
}
|
|
|
|
error = hid_hw_start(hid, HID_CONNECT_DEFAULT);
|
|
if (error) {
|
|
hid_err(hid, "HID hw start failed\n");
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
static const struct hid_device_id mf_devices[] = {
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_PS3),
|
|
.driver_data = HID_QUIRK_MULTI_INPUT },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_DOLPHINBAR),
|
|
.driver_data = HID_QUIRK_MULTI_INPUT },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE1),
|
|
.driver_data = HID_QUIRK_MULTI_INPUT },
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE2),
|
|
.driver_data = 0 }, /* No quirk required */
|
|
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE3),
|
|
.driver_data = HID_QUIRK_MULTI_INPUT },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(hid, mf_devices);
|
|
|
|
static struct hid_driver mf_driver = {
|
|
.name = "hid_mf",
|
|
.id_table = mf_devices,
|
|
.probe = mf_probe,
|
|
.input_configured = mf_input_configured,
|
|
};
|
|
module_hid_driver(mf_driver);
|
|
|
|
MODULE_DESCRIPTION("Force feedback support for Mayflash game controller adapters.");
|
|
MODULE_LICENSE("GPL");
|