[mirror_ubuntu-focal-kernel.git] / drivers / input / joystick / iforce / iforce-usb.c

// SPDX-License-Identifier: GPL-2.0-or-later
 /*
 *  Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
 *  Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
 *
 *  USB/RS232 I-Force joysticks and wheels.
 */

/*
 */

#include "iforce.h"

void iforce_usb_xmit(struct iforce *iforce)
{
	int n, c;
	unsigned long flags;

	spin_lock_irqsave(&iforce->xmit_lock, flags);

	if (iforce->xmit.head == iforce->xmit.tail) {
		clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
		spin_unlock_irqrestore(&iforce->xmit_lock, flags);
		return;
	}

	((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail];
	XMIT_INC(iforce->xmit.tail, 1);
	n = iforce->xmit.buf[iforce->xmit.tail];
	XMIT_INC(iforce->xmit.tail, 1);

	iforce->out->transfer_buffer_length = n + 1;
	iforce->out->dev = iforce->usbdev;

	/* Copy rest of data then */
	c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE);
	if (n < c) c=n;

	memcpy(iforce->out->transfer_buffer + 1,
	       &iforce->xmit.buf[iforce->xmit.tail],
	       c);
	if (n != c) {
		memcpy(iforce->out->transfer_buffer + 1 + c,
		       &iforce->xmit.buf[0],
		       n-c);
	}
	XMIT_INC(iforce->xmit.tail, n);

	if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) {
		clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
		dev_warn(&iforce->intf->dev, "usb_submit_urb failed %d\n", n);
	}

	/* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended.
	 * As long as the urb completion handler is not called, the transmiting
	 * is considered to be running */
	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
}

static void iforce_usb_irq(struct urb *urb)
{
	struct iforce *iforce = urb->context;
	struct device *dev = &iforce->intf->dev;
	int status;

	switch (urb->status) {
	case 0:
		/* success */
		break;
	case -ECONNRESET:
	case -ENOENT:
	case -ESHUTDOWN:
		/* this urb is terminated, clean up */
		dev_dbg(dev, "%s - urb shutting down with status: %d\n",
			__func__, urb->status);
		return;
	default:
		dev_dbg(dev, "%s - urb has status of: %d\n",
			__func__, urb->status);
		goto exit;
	}

	iforce_process_packet(iforce,
		(iforce->data[0] << 8) | (urb->actual_length - 1), iforce->data + 1);

exit:
	status = usb_submit_urb (urb, GFP_ATOMIC);
	if (status)
		dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
			__func__, status);
}

static void iforce_usb_out(struct urb *urb)
{
	struct iforce *iforce = urb->context;

	if (urb->status) {
		clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
		dev_dbg(&iforce->intf->dev, "urb->status %d, exiting\n",
			urb->status);
		return;
	}

	iforce_usb_xmit(iforce);

	wake_up(&iforce->wait);
}

static void iforce_usb_ctrl(struct urb *urb)
{
	struct iforce *iforce = urb->context;
	if (urb->status) return;
	iforce->ecmd = 0xff00 | urb->actual_length;
	wake_up(&iforce->wait);
}

static int iforce_usb_probe(struct usb_interface *intf,
				const struct usb_device_id *id)
{
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usb_host_interface *interface;
	struct usb_endpoint_descriptor *epirq, *epout;
	struct iforce *iforce;
	int err = -ENOMEM;

	interface = intf->cur_altsetting;

	if (interface->desc.bNumEndpoints < 2)
		return -ENODEV;

	epirq = &interface->endpoint[0].desc;
	epout = &interface->endpoint[1].desc;

	if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
		goto fail;

	if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
		goto fail;

	if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
		goto fail;

	if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
		goto fail;

	iforce->bus = IFORCE_USB;
	iforce->usbdev = dev;
	iforce->intf = intf;

	iforce->cr.bRequestType = USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_INTERFACE;
	iforce->cr.wIndex = 0;
	iforce->cr.wLength = cpu_to_le16(16);

	usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
			iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);

	usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress),
			iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval);

	usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
			(void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);

	err = iforce_init_device(iforce);
	if (err)
		goto fail;

	usb_set_intfdata(intf, iforce);
	return 0;

fail:
	if (iforce) {
		usb_free_urb(iforce->irq);
		usb_free_urb(iforce->out);
		usb_free_urb(iforce->ctrl);
		kfree(iforce);
	}

	return err;
}

static void iforce_usb_disconnect(struct usb_interface *intf)
{
	struct iforce *iforce = usb_get_intfdata(intf);

	usb_set_intfdata(intf, NULL);

	input_unregister_device(iforce->dev);

	usb_free_urb(iforce->irq);
	usb_free_urb(iforce->out);
	usb_free_urb(iforce->ctrl);

	kfree(iforce);
}

static const struct usb_device_id iforce_usb_ids[] = {
	{ USB_DEVICE(0x044f, 0xa01c) },		/* Thrustmaster Motor Sport GT */
	{ USB_DEVICE(0x046d, 0xc281) },		/* Logitech WingMan Force */
	{ USB_DEVICE(0x046d, 0xc291) },		/* Logitech WingMan Formula Force */
	{ USB_DEVICE(0x05ef, 0x020a) },		/* AVB Top Shot Pegasus */
	{ USB_DEVICE(0x05ef, 0x8884) },		/* AVB Mag Turbo Force */
	{ USB_DEVICE(0x05ef, 0x8888) },		/* AVB Top Shot FFB Racing Wheel */
	{ USB_DEVICE(0x061c, 0xc0a4) },         /* ACT LABS Force RS */
	{ USB_DEVICE(0x061c, 0xc084) },         /* ACT LABS Force RS */
	{ USB_DEVICE(0x06f8, 0x0001) },		/* Guillemot Race Leader Force Feedback */
	{ USB_DEVICE(0x06f8, 0x0003) },		/* Guillemot Jet Leader Force Feedback */
	{ USB_DEVICE(0x06f8, 0x0004) },		/* Guillemot Force Feedback Racing Wheel */
	{ USB_DEVICE(0x06f8, 0xa302) },		/* Guillemot Jet Leader 3D */
	{ }					/* Terminating entry */
};

MODULE_DEVICE_TABLE (usb, iforce_usb_ids);

struct usb_driver iforce_usb_driver = {
	.name =		"iforce",
	.probe =	iforce_usb_probe,
	.disconnect =	iforce_usb_disconnect,
	.id_table =	iforce_usb_ids,
};
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4	2	/*
1da177e4	3	* Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz>
598972d4	4	* Copyright (c) 2001-2002, 2007 Johann Deneux <johann.deneux@gmail.com>
1da177e4 LT	5	*
	6	* USB/RS232 I-Force joysticks and wheels.
	7	*/
	8
	9	/*
1da177e4 LT	10	*/
	11
	12	#include "iforce.h"
	13
	14	void iforce_usb_xmit(struct iforce *iforce)
	15	{
	16	int n, c;
	17	unsigned long flags;
	18
	19	spin_lock_irqsave(&iforce->xmit_lock, flags);
	20
	21	if (iforce->xmit.head == iforce->xmit.tail) {
	22	clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
	23	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
	24	return;
	25	}
	26
	27	((char *)iforce->out->transfer_buffer)[0] = iforce->xmit.buf[iforce->xmit.tail];
	28	XMIT_INC(iforce->xmit.tail, 1);
	29	n = iforce->xmit.buf[iforce->xmit.tail];
	30	XMIT_INC(iforce->xmit.tail, 1);
	31
	32	iforce->out->transfer_buffer_length = n + 1;
	33	iforce->out->dev = iforce->usbdev;
	34
	35	/* Copy rest of data then */
	36	c = CIRC_CNT_TO_END(iforce->xmit.head, iforce->xmit.tail, XMIT_SIZE);
	37	if (n < c) c=n;
	38
	39	memcpy(iforce->out->transfer_buffer + 1,
	40	&iforce->xmit.buf[iforce->xmit.tail],
	41	c);
	42	if (n != c) {
	43	memcpy(iforce->out->transfer_buffer + 1 + c,
	44	&iforce->xmit.buf[0],
	45	n-c);
	46	}
	47	XMIT_INC(iforce->xmit.tail, n);
	48
	49	if ( (n=usb_submit_urb(iforce->out, GFP_ATOMIC)) ) {
b8691fd2	50	clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
a852d78e	51	dev_warn(&iforce->intf->dev, "usb_submit_urb failed %d\n", n);
1da177e4 LT	52	}
	53
	54	/* The IFORCE_XMIT_RUNNING bit is not cleared here. That's intended.
	55	* As long as the urb completion handler is not called, the transmiting
	56	* is considered to be running */
	57	spin_unlock_irqrestore(&iforce->xmit_lock, flags);
	58	}
	59
7d12e780	60	static void iforce_usb_irq(struct urb *urb)
1da177e4 LT	61	{
1da177e4 LT	62	struct iforce *iforce = urb->context;
a852d78e	63	struct device *dev = &iforce->intf->dev;
1da177e4 LT	64	int status;
	65
	66	switch (urb->status) {
	67	case 0:
	68	/* success */
	69	break;
	70	case -ECONNRESET:
	71	case -ENOENT:
	72	case -ESHUTDOWN:
	73	/* this urb is terminated, clean up */
f576125d GKH	74	dev_dbg(dev, "%s - urb shutting down with status: %d\n",
f576125d GKH	75	__func__, urb->status);
1da177e4 LT	76	return;
1da177e4 LT	77	default:
f576125d GKH	78	dev_dbg(dev, "%s - urb has status of: %d\n",
f576125d GKH	79	__func__, urb->status);
1da177e4 LT	80	goto exit;
	81	}
	82
	83	iforce_process_packet(iforce,
7d12e780	84	(iforce->data[0] << 8) \| (urb->actual_length - 1), iforce->data + 1);
1da177e4 LT	85
	86	exit:
	87	status = usb_submit_urb (urb, GFP_ATOMIC);
	88	if (status)
f576125d	89	dev_err(dev, "%s - usb_submit_urb failed with result %d\n",
7b22a885	90	__func__, status);
1da177e4 LT	91	}
1da177e4 LT	92
7d12e780	93	static void iforce_usb_out(struct urb *urb)
1da177e4 LT	94	{
	95	struct iforce *iforce = urb->context;
	96
	97	if (urb->status) {
c2b27ef6	98	clear_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags);
a852d78e	99	dev_dbg(&iforce->intf->dev, "urb->status %d, exiting\n",
f576125d	100	urb->status);
1da177e4 LT	101	return;
	102	}
	103
	104	iforce_usb_xmit(iforce);
	105
	106	wake_up(&iforce->wait);
	107	}
	108
7d12e780	109	static void iforce_usb_ctrl(struct urb *urb)
1da177e4 LT	110	{
	111	struct iforce *iforce = urb->context;
	112	if (urb->status) return;
	113	iforce->ecmd = 0xff00 \| urb->actual_length;
	114	wake_up(&iforce->wait);
	115	}
	116
	117	static int iforce_usb_probe(struct usb_interface *intf,
	118	const struct usb_device_id *id)
	119	{
	120	struct usb_device *dev = interface_to_usbdev(intf);
	121	struct usb_host_interface *interface;
	122	struct usb_endpoint_descriptor epirq, epout;
	123	struct iforce *iforce;
17dd3f0f	124	int err = -ENOMEM;
1da177e4 LT	125
	126	interface = intf->cur_altsetting;
	127
59cf8bed JH	128	if (interface->desc.bNumEndpoints < 2)
	129	return -ENODEV;
	130
1da177e4 LT	131	epirq = &interface->endpoint[0].desc;
	132	epout = &interface->endpoint[1].desc;
	133
17dd3f0f	134	if (!(iforce = kzalloc(sizeof(struct iforce) + 32, GFP_KERNEL)))
1da177e4 LT	135	goto fail;
1da177e4 LT	136
17dd3f0f	137	if (!(iforce->irq = usb_alloc_urb(0, GFP_KERNEL)))
1da177e4	138	goto fail;
1da177e4	139
17dd3f0f	140	if (!(iforce->out = usb_alloc_urb(0, GFP_KERNEL)))
1da177e4	141	goto fail;
1da177e4	142
17dd3f0f	143	if (!(iforce->ctrl = usb_alloc_urb(0, GFP_KERNEL)))
1da177e4	144	goto fail;
1da177e4 LT	145
	146	iforce->bus = IFORCE_USB;
	147	iforce->usbdev = dev;
a852d78e	148	iforce->intf = intf;
1da177e4 LT	149
	150	iforce->cr.bRequestType = USB_TYPE_VENDOR \| USB_DIR_IN \| USB_RECIP_INTERFACE;
	151	iforce->cr.wIndex = 0;
6b8588f7	152	iforce->cr.wLength = cpu_to_le16(16);
1da177e4 LT	153
	154	usb_fill_int_urb(iforce->irq, dev, usb_rcvintpipe(dev, epirq->bEndpointAddress),
	155	iforce->data, 16, iforce_usb_irq, iforce, epirq->bInterval);
	156
b8691fd2 JD	157	usb_fill_int_urb(iforce->out, dev, usb_sndintpipe(dev, epout->bEndpointAddress),
b8691fd2 JD	158	iforce + 1, 32, iforce_usb_out, iforce, epout->bInterval);
1da177e4 LT	159
	160	usb_fill_control_urb(iforce->ctrl, dev, usb_rcvctrlpipe(dev, 0),
	161	(void*) &iforce->cr, iforce->edata, 16, iforce_usb_ctrl, iforce);
	162
17dd3f0f DT	163	err = iforce_init_device(iforce);
	164	if (err)
	165	goto fail;
1da177e4 LT	166
	167	usb_set_intfdata(intf, iforce);
	168	return 0;
	169
	170	fail:
	171	if (iforce) {
8f21d119 MK	172	usb_free_urb(iforce->irq);
	173	usb_free_urb(iforce->out);
	174	usb_free_urb(iforce->ctrl);
1da177e4 LT	175	kfree(iforce);
	176	}
	177
17dd3f0f	178	return err;
1da177e4 LT	179	}
1da177e4 LT	180
1da177e4 LT	181	static void iforce_usb_disconnect(struct usb_interface *intf)
	182	{
	183	struct iforce *iforce = usb_get_intfdata(intf);
1da177e4 LT	184
1da177e4 LT	185	usb_set_intfdata(intf, NULL);
1da177e4	186
98b7fb04 DT	187	input_unregister_device(iforce->dev);
	188
	189	usb_free_urb(iforce->irq);
	190	usb_free_urb(iforce->out);
	191	usb_free_urb(iforce->ctrl);
	192
	193	kfree(iforce);
1da177e4 LT	194	}
1da177e4 LT	195
c1295851	196	static const struct usb_device_id iforce_usb_ids[] = {
1da177e4 LT	197	{ USB_DEVICE(0x044f, 0xa01c) }, /* Thrustmaster Motor Sport GT */
	198	{ USB_DEVICE(0x046d, 0xc281) }, /* Logitech WingMan Force */
	199	{ USB_DEVICE(0x046d, 0xc291) }, /* Logitech WingMan Formula Force */
	200	{ USB_DEVICE(0x05ef, 0x020a) }, /* AVB Top Shot Pegasus */
	201	{ USB_DEVICE(0x05ef, 0x8884) }, /* AVB Mag Turbo Force */
	202	{ USB_DEVICE(0x05ef, 0x8888) }, /* AVB Top Shot FFB Racing Wheel */
	203	{ USB_DEVICE(0x061c, 0xc0a4) }, /* ACT LABS Force RS */
68947b8f	204	{ USB_DEVICE(0x061c, 0xc084) }, /* ACT LABS Force RS */
1da177e4	205	{ USB_DEVICE(0x06f8, 0x0001) }, /* Guillemot Race Leader Force Feedback */
d861f7bf	206	{ USB_DEVICE(0x06f8, 0x0003) }, /* Guillemot Jet Leader Force Feedback */
1da177e4	207	{ USB_DEVICE(0x06f8, 0x0004) }, /* Guillemot Force Feedback Racing Wheel */
18098a6c	208	{ USB_DEVICE(0x06f8, 0xa302) }, /* Guillemot Jet Leader 3D */
1da177e4 LT	209	{ } /* Terminating entry */
	210	};
	211
	212	MODULE_DEVICE_TABLE (usb, iforce_usb_ids);
	213
	214	struct usb_driver iforce_usb_driver = {
1da177e4 LT	215	.name = "iforce",
	216	.probe = iforce_usb_probe,
	217	.disconnect = iforce_usb_disconnect,
	218	.id_table = iforce_usb_ids,
	219	};