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acrn-kernel/drivers/usb/input/xpad.c

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/*
* X-Box gamepad - v0.0.5
*
* Copyright (c) 2002 Marko Friedemann <mfr@bmx-chemnitz.de>
*
*
* 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
*
*
* This driver is based on:
* - information from http://euc.jp/periphs/xbox-controller.ja.html
* - the iForce driver drivers/char/joystick/iforce.c
* - the skeleton-driver drivers/usb/usb-skeleton.c
*
* Thanks to:
* - ITO Takayuki for providing essential xpad information on his website
* - Vojtech Pavlik - iforce driver / input subsystem
* - Greg Kroah-Hartman - usb-skeleton driver
*
* TODO:
* - fine tune axes
* - fix "analog" buttons (reported as digital now)
* - get rumble working
*
* History:
*
* 2002-06-27 - 0.0.1 : first version, just said "XBOX HID controller"
*
* 2002-07-02 - 0.0.2 : basic working version
* - all axes and 9 of the 10 buttons work (german InterAct device)
* - the black button does not work
*
* 2002-07-14 - 0.0.3 : rework by Vojtech Pavlik
* - indentation fixes
* - usb + input init sequence fixes
*
* 2002-07-16 - 0.0.4 : minor changes, merge with Vojtech's v0.0.3
* - verified the lack of HID and report descriptors
* - verified that ALL buttons WORK
* - fixed d-pad to axes mapping
*
* 2002-07-17 - 0.0.5 : simplified d-pad handling
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/smp_lock.h>
#include <linux/usb/input.h>
#define DRIVER_VERSION "v0.0.5"
#define DRIVER_AUTHOR "Marko Friedemann <mfr@bmx-chemnitz.de>"
#define DRIVER_DESC "X-Box pad driver"
#define XPAD_PKT_LEN 32
static const struct xpad_device {
u16 idVendor;
u16 idProduct;
char *name;
} xpad_device[] = {
{ 0x045e, 0x0202, "Microsoft X-Box pad (US)" },
{ 0x045e, 0x0285, "Microsoft X-Box pad (Japan)" },
{ 0x05fd, 0x107a, "InterAct 'PowerPad Pro' X-Box pad (Germany)" },
{ 0x0000, 0x0000, "X-Box pad" }
};
static const signed short xpad_btn[] = {
BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, /* "analog" buttons */
BTN_START, BTN_BACK, BTN_THUMBL, BTN_THUMBR, /* start/back/sticks */
-1 /* terminating entry */
};
static const signed short xpad_abs[] = {
ABS_X, ABS_Y, /* left stick */
ABS_RX, ABS_RY, /* right stick */
ABS_Z, ABS_RZ, /* triggers left/right */
ABS_HAT0X, ABS_HAT0Y, /* digital pad */
-1 /* terminating entry */
};
static struct usb_device_id xpad_table [] = {
{ USB_INTERFACE_INFO('X', 'B', 0) }, /* X-Box USB-IF not approved class */
{ }
};
MODULE_DEVICE_TABLE (usb, xpad_table);
struct usb_xpad {
struct input_dev *dev; /* input device interface */
struct usb_device *udev; /* usb device */
struct urb *irq_in; /* urb for interrupt in report */
unsigned char *idata; /* input data */
dma_addr_t idata_dma;
char phys[65]; /* physical device path */
};
/*
* xpad_process_packet
*
* Completes a request by converting the data into events for the
* input subsystem.
*
* The used report descriptor was taken from ITO Takayukis website:
* http://euc.jp/periphs/xbox-controller.ja.html
*/
static void xpad_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data, struct pt_regs *regs)
{
struct input_dev *dev = xpad->dev;
input_regs(dev, regs);
/* left stick */
input_report_abs(dev, ABS_X, (__s16) (((__s16)data[13] << 8) | data[12]));
input_report_abs(dev, ABS_Y, (__s16) (((__s16)data[15] << 8) | data[14]));
/* right stick */
input_report_abs(dev, ABS_RX, (__s16) (((__s16)data[17] << 8) | data[16]));
input_report_abs(dev, ABS_RY, (__s16) (((__s16)data[19] << 8) | data[18]));
/* triggers left/right */
input_report_abs(dev, ABS_Z, data[10]);
input_report_abs(dev, ABS_RZ, data[11]);
/* digital pad */
input_report_abs(dev, ABS_HAT0X, !!(data[2] & 0x08) - !!(data[2] & 0x04));
input_report_abs(dev, ABS_HAT0Y, !!(data[2] & 0x02) - !!(data[2] & 0x01));
/* start/back buttons and stick press left/right */
input_report_key(dev, BTN_START, (data[2] & 0x10) >> 4);
input_report_key(dev, BTN_BACK, (data[2] & 0x20) >> 5);
input_report_key(dev, BTN_THUMBL, (data[2] & 0x40) >> 6);
input_report_key(dev, BTN_THUMBR, data[2] >> 7);
/* "analog" buttons A, B, X, Y */
input_report_key(dev, BTN_A, data[4]);
input_report_key(dev, BTN_B, data[5]);
input_report_key(dev, BTN_X, data[6]);
input_report_key(dev, BTN_Y, data[7]);
/* "analog" buttons black, white */
input_report_key(dev, BTN_C, data[8]);
input_report_key(dev, BTN_Z, data[9]);
input_sync(dev);
}
static void xpad_irq_in(struct urb *urb, struct pt_regs *regs)
{
struct usb_xpad *xpad = urb->context;
int retval;
switch (urb->status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
return;
default:
dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
goto exit;
}
xpad_process_packet(xpad, 0, xpad->idata, regs);
exit:
retval = usb_submit_urb (urb, GFP_ATOMIC);
if (retval)
err ("%s - usb_submit_urb failed with result %d",
__FUNCTION__, retval);
}
static int xpad_open (struct input_dev *dev)
{
struct usb_xpad *xpad = dev->private;
xpad->irq_in->dev = xpad->udev;
if (usb_submit_urb(xpad->irq_in, GFP_KERNEL))
return -EIO;
return 0;
}
static void xpad_close (struct input_dev *dev)
{
struct usb_xpad *xpad = dev->private;
usb_kill_urb(xpad->irq_in);
}
static int xpad_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev (intf);
struct usb_xpad *xpad;
struct input_dev *input_dev;
struct usb_endpoint_descriptor *ep_irq_in;
int i;
for (i = 0; xpad_device[i].idVendor; i++) {
if ((le16_to_cpu(udev->descriptor.idVendor) == xpad_device[i].idVendor) &&
(le16_to_cpu(udev->descriptor.idProduct) == xpad_device[i].idProduct))
break;
}
xpad = kzalloc(sizeof(struct usb_xpad), GFP_KERNEL);
input_dev = input_allocate_device();
if (!xpad || !input_dev)
goto fail1;
xpad->idata = usb_buffer_alloc(udev, XPAD_PKT_LEN,
SLAB_ATOMIC, &xpad->idata_dma);
if (!xpad->idata)
goto fail1;
xpad->irq_in = usb_alloc_urb(0, GFP_KERNEL);
if (!xpad->irq_in)
goto fail2;
xpad->udev = udev;
xpad->dev = input_dev;
usb_make_path(udev, xpad->phys, sizeof(xpad->phys));
strlcat(xpad->phys, "/input0", sizeof(xpad->phys));
input_dev->name = xpad_device[i].name;
input_dev->phys = xpad->phys;
usb_to_input_id(udev, &input_dev->id);
input_dev->cdev.dev = &intf->dev;
input_dev->private = xpad;
input_dev->open = xpad_open;
input_dev->close = xpad_close;
input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
for (i = 0; xpad_btn[i] >= 0; i++)
set_bit(xpad_btn[i], input_dev->keybit);
for (i = 0; xpad_abs[i] >= 0; i++) {
signed short t = xpad_abs[i];
set_bit(t, input_dev->absbit);
switch (t) {
case ABS_X:
case ABS_Y:
case ABS_RX:
case ABS_RY: /* the two sticks */
input_set_abs_params(input_dev, t, -32768, 32767, 16, 128);
break;
case ABS_Z:
case ABS_RZ: /* the triggers */
input_set_abs_params(input_dev, t, 0, 255, 0, 0);
break;
case ABS_HAT0X:
case ABS_HAT0Y: /* the d-pad */
input_set_abs_params(input_dev, t, -1, 1, 0, 0);
break;
}
}
ep_irq_in = &intf->cur_altsetting->endpoint[0].desc;
usb_fill_int_urb(xpad->irq_in, udev,
usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress),
xpad->idata, XPAD_PKT_LEN, xpad_irq_in,
xpad, ep_irq_in->bInterval);
xpad->irq_in->transfer_dma = xpad->idata_dma;
xpad->irq_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
input_register_device(xpad->dev);
usb_set_intfdata(intf, xpad);
return 0;
fail2: usb_buffer_free(udev, XPAD_PKT_LEN, xpad->idata, xpad->idata_dma);
fail1: input_free_device(input_dev);
kfree(xpad);
return -ENOMEM;
}
static void xpad_disconnect(struct usb_interface *intf)
{
struct usb_xpad *xpad = usb_get_intfdata (intf);
usb_set_intfdata(intf, NULL);
if (xpad) {
usb_kill_urb(xpad->irq_in);
input_unregister_device(xpad->dev);
usb_free_urb(xpad->irq_in);
usb_buffer_free(interface_to_usbdev(intf), XPAD_PKT_LEN, xpad->idata, xpad->idata_dma);
kfree(xpad);
}
}
static struct usb_driver xpad_driver = {
.name = "xpad",
.probe = xpad_probe,
.disconnect = xpad_disconnect,
.id_table = xpad_table,
};
static int __init usb_xpad_init(void)
{
int result = usb_register(&xpad_driver);
if (result == 0)
info(DRIVER_DESC ":" DRIVER_VERSION);
return result;
}
static void __exit usb_xpad_exit(void)
{
usb_deregister(&xpad_driver);
}
module_init(usb_xpad_init);
module_exit(usb_xpad_exit);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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