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HID: gembird: add new driver to fix Gembird JPD-DualForce 2 

This gamepad advertise 5 absolute axis while 4 are actually used.
The second Z axis shows some garbage, so it has to be ignored by HID.
The first Z axis and the Rz one are actually Rx and Ry. Remap them.

We could also just remap and ignore the axis in .input_mapping(). I
went ahead with .report_fixup() first, so here it is.

Reported-by: Orivej Desh <orivej@gmx.fr>
Tested-by: Orivej Desh <orivej@gmx.fr>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
steinar/wifi_calib_4_9_kernel
Benjamin Tissoires 2015-08-13 11:11:27 -04:00 committed by Jiri Kosina
parent 7a834ba5e2
commit 931830aa5c
5 changed files with 127 additions and 0 deletions
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6
drivers/hid/Kconfig
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@ -251,6 +251,12 @@ config HID_EZKEY
---help---
Support for Ezkey BTC 8193 keyboard.
config HID_GEMBIRD
tristate "Gembird Joypad"
depends on HID
---help---
Support for Gembird JPD-DualForce 2.
config HID_HOLTEK
tristate "Holtek HID devices"
depends on USB_HID

1
drivers/hid/Makefile
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@ -36,6 +36,7 @@ obj-$(CONFIG_HID_EMS_FF) += hid-emsff.o
obj-$(CONFIG_HID_ELECOM) += hid-elecom.o
obj-$(CONFIG_HID_ELO) += hid-elo.o
obj-$(CONFIG_HID_EZKEY) += hid-ezkey.o
obj-$(CONFIG_HID_GEMBIRD) += hid-gembird.o
obj-$(CONFIG_HID_GT683R) += hid-gt683r.o
obj-$(CONFIG_HID_GYRATION) += hid-gyration.o
obj-$(CONFIG_HID_HOLTEK) += hid-holtek-kbd.o

1
drivers/hid/hid-core.c
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@ -1823,6 +1823,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GEMBIRD, USB_DEVICE_ID_GEMBIRD_JPD_DUALFORCE2) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },

116
drivers/hid/hid-gembird.c 100644
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@ -0,0 +1,116 @@
/*
* HID driver for Gembird Joypad, "PC Game Controller"
*
* Copyright (c) 2015 Red Hat, Inc
* Copyright (c) 2015 Benjamin Tissoires
*/
/*
* 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.
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
#define GEMBIRD_START_FAULTY_RDESC 8
static const __u8 gembird_jpd_faulty_rdesc[] = {
0x75, 0x08, /* Report Size (8) */
0x95, 0x05, /* Report Count (5) */
0x15, 0x00, /* Logical Minimum (0) */
0x26, 0xff, 0x00, /* Logical Maximum (255) */
0x35, 0x00, /* Physical Minimum (0) */
0x46, 0xff, 0x00, /* Physical Maximum (255) */
0x09, 0x30, /* Usage (X) */
0x09, 0x31, /* Usage (Y) */
0x09, 0x32, /* Usage (Z) */
0x09, 0x32, /* Usage (Z) */
0x09, 0x35, /* Usage (Rz) */
0x81, 0x02, /* Input (Data,Var,Abs) */
};
/*
* we fix the report descriptor by:
* - marking the first Z axis as constant (so it is ignored by HID)
* - assign the original second Z to Rx
* - assign the original Rz to Ry
*/
static const __u8 gembird_jpd_fixed_rdesc[] = {
0x75, 0x08, /* Report Size (8) */
0x95, 0x02, /* Report Count (2) */
0x15, 0x00, /* Logical Minimum (0) */
0x26, 0xff, 0x00, /* Logical Maximum (255) */
0x35, 0x00, /* Physical Minimum (0) */
0x46, 0xff, 0x00, /* Physical Maximum (255) */
0x09, 0x30, /* Usage (X) */
0x09, 0x31, /* Usage (Y) */
0x81, 0x02, /* Input (Data,Var,Abs) */
0x95, 0x01, /* Report Count (1) */
0x09, 0x32, /* Usage (Z) */
0x81, 0x01, /* Input (Cnst,Arr,Abs) */
0x95, 0x02, /* Report Count (2) */
0x09, 0x33, /* Usage (Rx) */
0x09, 0x34, /* Usage (Ry) */
0x81, 0x02, /* Input (Data,Var,Abs) */
};
static __u8 *gembird_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
__u8 *new_rdesc;
/* delta_size is > 0 */
size_t delta_size = sizeof(gembird_jpd_fixed_rdesc) -
sizeof(gembird_jpd_faulty_rdesc);
size_t new_size = *rsize + delta_size;
if (*rsize >= 31 && !memcmp(&rdesc[GEMBIRD_START_FAULTY_RDESC],
gembird_jpd_faulty_rdesc,
sizeof(gembird_jpd_faulty_rdesc))) {
new_rdesc = devm_kzalloc(&hdev->dev, new_size, GFP_KERNEL);
if (new_rdesc == NULL)
return rdesc;
dev_info(&hdev->dev,
"fixing Gembird JPD-DualForce 2 report descriptor.\n");
/* start by copying the end of the rdesc */
memcpy(new_rdesc + delta_size, rdesc, *rsize);
/* add the correct beginning */
memcpy(new_rdesc, rdesc, GEMBIRD_START_FAULTY_RDESC);
/* replace the faulty part with the fixed one */
memcpy(new_rdesc + GEMBIRD_START_FAULTY_RDESC,
gembird_jpd_fixed_rdesc,
sizeof(gembird_jpd_fixed_rdesc));
*rsize = new_size;
rdesc = new_rdesc;
}
return rdesc;
}
static const struct hid_device_id gembird_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_GEMBIRD,
USB_DEVICE_ID_GEMBIRD_JPD_DUALFORCE2) },
{ }
};
MODULE_DEVICE_TABLE(hid, gembird_devices);
static struct hid_driver gembird_driver = {
.name = "gembird",
.id_table = gembird_devices,
.report_fixup = gembird_report_fixup,
};
module_hid_driver(gembird_driver);
MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
MODULE_DESCRIPTION("HID Gembird joypad driver");
MODULE_LICENSE("GPL");

3
drivers/hid/hid-ids.h
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@ -358,6 +358,9 @@
#define USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR 0x0001
#define USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR 0x0002
#define USB_VENDOR_ID_GEMBIRD 0x11ff
#define USB_DEVICE_ID_GEMBIRD_JPD_DUALFORCE2 0x3331
#define USB_VENDOR_ID_GENERAL_TOUCH 0x0dfc
#define USB_DEVICE_ID_GENERAL_TOUCH_WIN7_TWOFINGERS 0x0003
#define USB_DEVICE_ID_GENERAL_TOUCH_WIN8_PWT_TENFINGERS 0x0100