mirror of
https://github.com/physwizz/a155-U-u1.git
synced 2024-11-19 13:27:49 +00:00
300 lines
7.8 KiB
C
300 lines
7.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
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* Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
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*
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* USB/RS232 I-Force joysticks and wheels.
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*/
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#include <linux/usb.h>
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#include "iforce.h"
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struct iforce_usb {
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struct iforce iforce;
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struct usb_device *usbdev;
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struct usb_interface *intf;
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struct urb *irq, *out;
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u8 data_in[IFORCE_MAX_LENGTH] ____cacheline_aligned;
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u8 data_out[IFORCE_MAX_LENGTH] ____cacheline_aligned;
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};
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static void __iforce_usb_xmit(struct iforce *iforce)
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{
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struct iforce_usb *iforce_usb = container_of(iforce, struct iforce_usb,
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iforce);
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int n, c;
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unsigned long flags;
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spin_lock_irqsave(&iforce->xmit_lock, flags);
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if (iforce->xmit.head == iforce->xmit.tail) {
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iforce_clear_xmit_and_wake(iforce);
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spin_unlock_irqrestore(&iforce->xmit_lock, flags);
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return;
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}
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((char *)iforce_usb->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail];
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XMIT_INC(iforce->xmit.tail, 1);
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n = iforce->xmit.buf[iforce->xmit.tail];
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XMIT_INC(iforce->xmit.tail, 1);
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iforce_usb->out->transfer_buffer_length = n + 1;
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iforce_usb->out->dev = iforce_usb->usbdev;
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/* Copy rest of data then */
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c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE);
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if (n < c) c=n;
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memcpy(iforce_usb->out->transfer_buffer + 1,
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&iforce->xmit.buf[iforce->xmit.tail],
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c);
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if (n != c) {
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memcpy(iforce_usb->out->transfer_buffer + 1 + c,
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&iforce->xmit.buf[0],
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n-c);
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}
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XMIT_INC(iforce->xmit.tail, n);
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if ( (n=usb_submit_urb(iforce_usb->out, GFP_ATOMIC)) ) {
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dev_warn(&iforce_usb->intf->dev,
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"usb_submit_urb failed %d\n", n);
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iforce_clear_xmit_and_wake(iforce);
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}
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/* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended.
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* As long as the urb completion handler is not called, the transmiting
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* is considered to be running */
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spin_unlock_irqrestore(&iforce->xmit_lock, flags);
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}
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static void iforce_usb_xmit(struct iforce *iforce)
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{
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if (!test_and_set_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags))
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__iforce_usb_xmit(iforce);
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}
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static int iforce_usb_get_id(struct iforce *iforce, u8 id,
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u8 *response_data, size_t *response_len)
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{
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struct iforce_usb *iforce_usb = container_of(iforce, struct iforce_usb,
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iforce);
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u8 *buf;
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int status;
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buf = kmalloc(IFORCE_MAX_LENGTH, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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status = usb_control_msg(iforce_usb->usbdev,
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usb_rcvctrlpipe(iforce_usb->usbdev, 0),
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id,
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USB_TYPE_VENDOR | USB_DIR_IN |
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USB_RECIP_INTERFACE,
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0, 0, buf, IFORCE_MAX_LENGTH, 1000);
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if (status < 0) {
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dev_err(&iforce_usb->intf->dev,
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"usb_submit_urb failed: %d\n", status);
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} else if (buf[0] != id) {
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status = -EIO;
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} else {
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memcpy(response_data, buf, status);
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*response_len = status;
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status = 0;
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}
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kfree(buf);
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return status;
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}
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static int iforce_usb_start_io(struct iforce *iforce)
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{
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struct iforce_usb *iforce_usb = container_of(iforce, struct iforce_usb,
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iforce);
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if (usb_submit_urb(iforce_usb->irq, GFP_KERNEL))
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return -EIO;
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return 0;
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}
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static void iforce_usb_stop_io(struct iforce *iforce)
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{
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struct iforce_usb *iforce_usb = container_of(iforce, struct iforce_usb,
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iforce);
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usb_kill_urb(iforce_usb->irq);
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usb_kill_urb(iforce_usb->out);
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}
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static const struct iforce_xport_ops iforce_usb_xport_ops = {
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.xmit = iforce_usb_xmit,
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.get_id = iforce_usb_get_id,
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.start_io = iforce_usb_start_io,
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.stop_io = iforce_usb_stop_io,
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};
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static void iforce_usb_irq(struct urb *urb)
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{
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struct iforce_usb *iforce_usb = urb->context;
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struct iforce *iforce = &iforce_usb->iforce;
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struct device *dev = &iforce_usb->intf->dev;
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int status;
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switch (urb->status) {
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case 0:
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/* success */
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break;
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case -ECONNRESET:
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case -ENOENT:
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case -ESHUTDOWN:
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/* this urb is terminated, clean up */
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dev_dbg(dev, "%s - urb shutting down with status: %d\n",
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__func__, urb->status);
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return;
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default:
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dev_dbg(dev, "%s - urb has status of: %d\n",
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__func__, urb->status);
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goto exit;
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}
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iforce_process_packet(iforce, iforce_usb->data_in[0],
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iforce_usb->data_in + 1, urb->actual_length - 1);
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exit:
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status = usb_submit_urb(urb, GFP_ATOMIC);
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if (status)
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dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
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__func__, status);
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}
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static void iforce_usb_out(struct urb *urb)
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{
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struct iforce_usb *iforce_usb = urb->context;
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struct iforce *iforce = &iforce_usb->iforce;
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if (urb->status) {
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dev_dbg(&iforce_usb->intf->dev, "urb->status %d, exiting\n",
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urb->status);
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iforce_clear_xmit_and_wake(iforce);
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return;
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}
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__iforce_usb_xmit(iforce);
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wake_up_all(&iforce->wait);
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}
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static int iforce_usb_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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struct usb_device *dev = interface_to_usbdev(intf);
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struct usb_host_interface *interface;
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struct usb_endpoint_descriptor *epirq, *epout;
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struct iforce_usb *iforce_usb;
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int err = -ENOMEM;
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interface = intf->cur_altsetting;
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if (interface->desc.bNumEndpoints < 2)
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return -ENODEV;
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epirq = &interface->endpoint[0].desc;
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if (!usb_endpoint_is_int_in(epirq))
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return -ENODEV;
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epout = &interface->endpoint[1].desc;
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if (!usb_endpoint_is_int_out(epout))
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return -ENODEV;
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iforce_usb = kzalloc(sizeof(*iforce_usb), GFP_KERNEL);
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if (!iforce_usb)
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goto fail;
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iforce_usb->irq = usb_alloc_urb(0, GFP_KERNEL);
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if (!iforce_usb->irq)
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goto fail;
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iforce_usb->out = usb_alloc_urb(0, GFP_KERNEL);
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if (!iforce_usb->out)
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goto fail;
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iforce_usb->iforce.xport_ops = &iforce_usb_xport_ops;
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iforce_usb->usbdev = dev;
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iforce_usb->intf = intf;
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usb_fill_int_urb(iforce_usb->irq, dev,
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usb_rcvintpipe(dev, epirq->bEndpointAddress),
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iforce_usb->data_in, sizeof(iforce_usb->data_in),
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iforce_usb_irq, iforce_usb, epirq->bInterval);
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usb_fill_int_urb(iforce_usb->out, dev,
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usb_sndintpipe(dev, epout->bEndpointAddress),
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iforce_usb->data_out, sizeof(iforce_usb->data_out),
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iforce_usb_out, iforce_usb, epout->bInterval);
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err = iforce_init_device(&intf->dev, BUS_USB, &iforce_usb->iforce);
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if (err)
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goto fail;
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usb_set_intfdata(intf, iforce_usb);
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return 0;
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fail:
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if (iforce_usb) {
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usb_free_urb(iforce_usb->irq);
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usb_free_urb(iforce_usb->out);
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kfree(iforce_usb);
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}
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return err;
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}
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static void iforce_usb_disconnect(struct usb_interface *intf)
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{
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struct iforce_usb *iforce_usb = usb_get_intfdata(intf);
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usb_set_intfdata(intf, NULL);
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input_unregister_device(iforce_usb->iforce.dev);
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usb_free_urb(iforce_usb->irq);
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usb_free_urb(iforce_usb->out);
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kfree(iforce_usb);
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}
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static const struct usb_device_id iforce_usb_ids[] = {
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{ USB_DEVICE(0x044f, 0xa01c) }, /* Thrustmaster Motor Sport GT */
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{ USB_DEVICE(0x046d, 0xc281) }, /* Logitech WingMan Force */
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{ USB_DEVICE(0x046d, 0xc291) }, /* Logitech WingMan Formula Force */
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{ USB_DEVICE(0x05ef, 0x020a) }, /* AVB Top Shot Pegasus */
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{ USB_DEVICE(0x05ef, 0x8884) }, /* AVB Mag Turbo Force */
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{ USB_DEVICE(0x05ef, 0x8888) }, /* AVB Top Shot FFB Racing Wheel */
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{ USB_DEVICE(0x061c, 0xc0a4) }, /* ACT LABS Force RS */
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{ USB_DEVICE(0x061c, 0xc084) }, /* ACT LABS Force RS */
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{ USB_DEVICE(0x06a3, 0xff04) }, /* Saitek R440 Force Wheel */
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{ USB_DEVICE(0x06f8, 0x0001) }, /* Guillemot Race Leader Force Feedback */
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{ USB_DEVICE(0x06f8, 0x0003) }, /* Guillemot Jet Leader Force Feedback */
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{ USB_DEVICE(0x06f8, 0x0004) }, /* Guillemot Force Feedback Racing Wheel */
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{ USB_DEVICE(0x06f8, 0xa302) }, /* Guillemot Jet Leader 3D */
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE (usb, iforce_usb_ids);
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struct usb_driver iforce_usb_driver = {
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.name = "iforce",
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.probe = iforce_usb_probe,
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.disconnect = iforce_usb_disconnect,
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.id_table = iforce_usb_ids,
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};
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module_usb_driver(iforce_usb_driver);
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>, Johann Deneux <johann.deneux@gmail.com>");
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MODULE_DESCRIPTION("USB I-Force joysticks and wheels driver");
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MODULE_LICENSE("GPL");
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