[deliverable/linux.git] / drivers / gpu / drm / udl / udl_main.c

/*
 * Copyright (C) 2012 Red Hat
 *
 * based in parts on udlfb.c:
 * Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
 * Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
 * Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License v2. See the file COPYING in the main directory of this archive for
 * more details.
 */
#include <drm/drmP.h>
#include "udl_drv.h"

/* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
#define BULK_SIZE 512

#define NR_USB_REQUEST_CHANNEL 0x12

#define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
#define WRITES_IN_FLIGHT (4)
#define MAX_VENDOR_DESCRIPTOR_SIZE 256

#define GET_URB_TIMEOUT	HZ
#define FREE_URB_TIMEOUT (HZ*2)

static int udl_parse_vendor_descriptor(struct drm_device *dev,
				       struct usb_device *usbdev)
{
	struct udl_device *udl = dev->dev_private;
	char *desc;
	char *buf;
	char *desc_end;

	u8 total_len = 0;

	buf = kzalloc(MAX_VENDOR_DESCRIPTOR_SIZE, GFP_KERNEL);
	if (!buf)
		return false;
	desc = buf;

	total_len = usb_get_descriptor(usbdev, 0x5f, /* vendor specific */
				    0, desc, MAX_VENDOR_DESCRIPTOR_SIZE);
	if (total_len > 5) {
		DRM_INFO("vendor descriptor length:%x data:%11ph\n",
			total_len, desc);

		if ((desc[0] != total_len) || /* descriptor length */
		    (desc[1] != 0x5f) ||   /* vendor descriptor type */
		    (desc[2] != 0x01) ||   /* version (2 bytes) */
		    (desc[3] != 0x00) ||
		    (desc[4] != total_len - 2)) /* length after type */
			goto unrecognized;

		desc_end = desc + total_len;
		desc += 5; /* the fixed header we've already parsed */

		while (desc < desc_end) {
			u8 length;
			u16 key;

			key = le16_to_cpu(*((u16 *) desc));
			desc += sizeof(u16);
			length = *desc;
			desc++;

			switch (key) {
			case 0x0200: { /* max_area */
				u32 max_area;
				max_area = le32_to_cpu(*((u32 *)desc));
				DRM_DEBUG("DL chip limited to %d pixel modes\n",
					max_area);
				udl->sku_pixel_limit = max_area;
				break;
			}
			default:
				break;
			}
			desc += length;
		}
	}

	goto success;

unrecognized:
	/* allow udlfb to load for now even if firmware unrecognized */
	DRM_ERROR("Unrecognized vendor firmware descriptor\n");

success:
	kfree(buf);
	return true;
}

/*
 * Need to ensure a channel is selected before submitting URBs
 */
static int udl_select_std_channel(struct udl_device *udl)
{
	int ret;
	u8 set_def_chn[] = {0x57, 0xCD, 0xDC, 0xA7,
			    0x1C, 0x88, 0x5E, 0x15,
			    0x60, 0xFE, 0xC6, 0x97,
			    0x16, 0x3D, 0x47, 0xF2};

	ret = usb_control_msg(udl->udev,
			      usb_sndctrlpipe(udl->udev, 0),
			      NR_USB_REQUEST_CHANNEL,
			      (USB_DIR_OUT | USB_TYPE_VENDOR), 0, 0,
			      set_def_chn, sizeof(set_def_chn),
			      USB_CTRL_SET_TIMEOUT);
	return ret < 0 ? ret : 0;
}

static void udl_release_urb_work(struct work_struct *work)
{
	struct urb_node *unode = container_of(work, struct urb_node,
					      release_urb_work.work);

	up(&unode->dev->urbs.limit_sem);
}

void udl_urb_completion(struct urb *urb)
{
	struct urb_node *unode = urb->context;
	struct udl_device *udl = unode->dev;
	unsigned long flags;

	/* sync/async unlink faults aren't errors */
	if (urb->status) {
		if (!(urb->status == -ENOENT ||
		    urb->status == -ECONNRESET ||
		    urb->status == -ESHUTDOWN)) {
			DRM_ERROR("%s - nonzero write bulk status received: %d\n",
				__func__, urb->status);
			atomic_set(&udl->lost_pixels, 1);
		}
	}

	urb->transfer_buffer_length = udl->urbs.size; /* reset to actual */

	spin_lock_irqsave(&udl->urbs.lock, flags);
	list_add_tail(&unode->entry, &udl->urbs.list);
	udl->urbs.available++;
	spin_unlock_irqrestore(&udl->urbs.lock, flags);

#if 0
	/*
	 * When using fb_defio, we deadlock if up() is called
	 * while another is waiting. So queue to another process.
	 */
	if (fb_defio)
		schedule_delayed_work(&unode->release_urb_work, 0);
	else
#endif
		up(&udl->urbs.limit_sem);
}

static void udl_free_urb_list(struct drm_device *dev)
{
	struct udl_device *udl = dev->dev_private;
	int count = udl->urbs.count;
	struct list_head *node;
	struct urb_node *unode;
	struct urb *urb;
	int ret;
	unsigned long flags;

	DRM_DEBUG("Waiting for completes and freeing all render urbs\n");

	/* keep waiting and freeing, until we've got 'em all */
	while (count--) {

		/* Getting interrupted means a leak, but ok at shutdown*/
		ret = down_interruptible(&udl->urbs.limit_sem);
		if (ret)
			break;

		spin_lock_irqsave(&udl->urbs.lock, flags);

		node = udl->urbs.list.next; /* have reserved one with sem */
		list_del_init(node);

		spin_unlock_irqrestore(&udl->urbs.lock, flags);

		unode = list_entry(node, struct urb_node, entry);
		urb = unode->urb;

		/* Free each separately allocated piece */
		usb_free_coherent(urb->dev, udl->urbs.size,
				  urb->transfer_buffer, urb->transfer_dma);
		usb_free_urb(urb);
		kfree(node);
	}
	udl->urbs.count = 0;
}

static int udl_alloc_urb_list(struct drm_device *dev, int count, size_t size)
{
	struct udl_device *udl = dev->dev_private;
	int i = 0;
	struct urb *urb;
	struct urb_node *unode;
	char *buf;

	spin_lock_init(&udl->urbs.lock);

	udl->urbs.size = size;
	INIT_LIST_HEAD(&udl->urbs.list);

	while (i < count) {
		unode = kzalloc(sizeof(struct urb_node), GFP_KERNEL);
		if (!unode)
			break;
		unode->dev = udl;

		INIT_DELAYED_WORK(&unode->release_urb_work,
			  udl_release_urb_work);

		urb = usb_alloc_urb(0, GFP_KERNEL);
		if (!urb) {
			kfree(unode);
			break;
		}
		unode->urb = urb;

		buf = usb_alloc_coherent(udl->udev, MAX_TRANSFER, GFP_KERNEL,
					 &urb->transfer_dma);
		if (!buf) {
			kfree(unode);
			usb_free_urb(urb);
			break;
		}

		/* urb->transfer_buffer_length set to actual before submit */
		usb_fill_bulk_urb(urb, udl->udev, usb_sndbulkpipe(udl->udev, 1),
			buf, size, udl_urb_completion, unode);
		urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;

		list_add_tail(&unode->entry, &udl->urbs.list);

		i++;
	}

	sema_init(&udl->urbs.limit_sem, i);
	udl->urbs.count = i;
	udl->urbs.available = i;

	DRM_DEBUG("allocated %d %d byte urbs\n", i, (int) size);

	return i;
}

struct urb *udl_get_urb(struct drm_device *dev)
{
	struct udl_device *udl = dev->dev_private;
	int ret = 0;
	struct list_head *entry;
	struct urb_node *unode;
	struct urb *urb = NULL;
	unsigned long flags;

	/* Wait for an in-flight buffer to complete and get re-queued */
	ret = down_timeout(&udl->urbs.limit_sem, GET_URB_TIMEOUT);
	if (ret) {
		atomic_set(&udl->lost_pixels, 1);
		DRM_INFO("wait for urb interrupted: %x available: %d\n",
		       ret, udl->urbs.available);
		goto error;
	}

	spin_lock_irqsave(&udl->urbs.lock, flags);

	BUG_ON(list_empty(&udl->urbs.list)); /* reserved one with limit_sem */
	entry = udl->urbs.list.next;
	list_del_init(entry);
	udl->urbs.available--;

	spin_unlock_irqrestore(&udl->urbs.lock, flags);

	unode = list_entry(entry, struct urb_node, entry);
	urb = unode->urb;

error:
	return urb;
}

int udl_submit_urb(struct drm_device *dev, struct urb *urb, size_t len)
{
	struct udl_device *udl = dev->dev_private;
	int ret;

	BUG_ON(len > udl->urbs.size);

	urb->transfer_buffer_length = len; /* set to actual payload len */
	ret = usb_submit_urb(urb, GFP_ATOMIC);
	if (ret) {
		udl_urb_completion(urb); /* because no one else will */
		atomic_set(&udl->lost_pixels, 1);
		DRM_ERROR("usb_submit_urb error %x\n", ret);
	}
	return ret;
}

int udl_driver_load(struct drm_device *dev, unsigned long flags)
{
	struct usb_device *udev = (void*)flags;
	struct udl_device *udl;
	int ret = -ENOMEM;

	DRM_DEBUG("\n");
	udl = kzalloc(sizeof(struct udl_device), GFP_KERNEL);
	if (!udl)
		return -ENOMEM;

	udl->udev = udev;
	udl->ddev = dev;
	dev->dev_private = udl;

	if (!udl_parse_vendor_descriptor(dev, udl->udev)) {
		ret = -ENODEV;
		DRM_ERROR("firmware not recognized. Assume incompatible device\n");
		goto err;
	}

	if (udl_select_std_channel(udl))
		DRM_ERROR("Selecting channel failed\n");

	if (!udl_alloc_urb_list(dev, WRITES_IN_FLIGHT, MAX_TRANSFER)) {
		DRM_ERROR("udl_alloc_urb_list failed\n");
		goto err;
	}

	DRM_DEBUG("\n");
	ret = udl_modeset_init(dev);
	if (ret)
		goto err;

	ret = udl_fbdev_init(dev);
	if (ret)
		goto err;

	ret = drm_vblank_init(dev, 1);
	if (ret)
		goto err_fb;

	return 0;
err_fb:
	udl_fbdev_cleanup(dev);
err:
	if (udl->urbs.count)
		udl_free_urb_list(dev);
	kfree(udl);
	DRM_ERROR("%d\n", ret);
	return ret;
}

int udl_drop_usb(struct drm_device *dev)
{
	udl_free_urb_list(dev);
	return 0;
}

int udl_driver_unload(struct drm_device *dev)
{
	struct udl_device *udl = dev->dev_private;

	drm_vblank_cleanup(dev);

	if (udl->urbs.count)
		udl_free_urb_list(dev);

	udl_fbdev_cleanup(dev);
	udl_modeset_cleanup(dev);
	kfree(udl);
	return 0;
}
Commit	Line	Data
5320918b DA	1	/*
	2	* Copyright (C) 2012 Red Hat
	3	*
	4	* based in parts on udlfb.c:
	5	* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
	6	* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
	7	* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
	8	*
	9	* This file is subject to the terms and conditions of the GNU General Public
	10	* License v2. See the file COPYING in the main directory of this archive for
	11	* more details.
	12	*/
760285e7	13	#include <drm/drmP.h>
5320918b DA	14	#include "udl_drv.h"
	15
	16	/* -BULK_SIZE as per usb-skeleton. Can we get full page and avoid overhead? */
	17	#define BULK_SIZE 512
	18
d1c151dc JL	19	#define NR_USB_REQUEST_CHANNEL 0x12
d1c151dc JL	20
5320918b DA	21	#define MAX_TRANSFER (PAGE_SIZE*16 - BULK_SIZE)
	22	#define WRITES_IN_FLIGHT (4)
	23	#define MAX_VENDOR_DESCRIPTOR_SIZE 256
	24
	25	#define GET_URB_TIMEOUT HZ
	26	#define FREE_URB_TIMEOUT (HZ*2)
	27
	28	static int udl_parse_vendor_descriptor(struct drm_device *dev,
	29	struct usb_device *usbdev)
	30	{
	31	struct udl_device *udl = dev->dev_private;
	32	char *desc;
	33	char *buf;
	34	char *desc_end;
	35
	36	u8 total_len = 0;
	37
	38	buf = kzalloc(MAX_VENDOR_DESCRIPTOR_SIZE, GFP_KERNEL);
	39	if (!buf)
	40	return false;
	41	desc = buf;
	42
	43	total_len = usb_get_descriptor(usbdev, 0x5f, /* vendor specific */
	44	0, desc, MAX_VENDOR_DESCRIPTOR_SIZE);
	45	if (total_len > 5) {
08fcd72b AS	46	DRM_INFO("vendor descriptor length:%x data:%11ph\n",
08fcd72b AS	47	total_len, desc);
5320918b DA	48
	49	if ((desc[0] != total_len) \|\| /* descriptor length */
	50	(desc[1] != 0x5f) \|\| /* vendor descriptor type */
	51	(desc[2] != 0x01) \|\| /* version (2 bytes) */
	52	(desc[3] != 0x00) \|\|
	53	(desc[4] != total_len - 2)) /* length after type */
	54	goto unrecognized;
	55
	56	desc_end = desc + total_len;
	57	desc += 5; /* the fixed header we've already parsed */
	58
	59	while (desc < desc_end) {
	60	u8 length;
	61	u16 key;
	62
d42f0349	63	key = le16_to_cpu(((u16 ) desc));
5320918b DA	64	desc += sizeof(u16);
	65	length = *desc;
	66	desc++;
	67
	68	switch (key) {
	69	case 0x0200: { /* max_area */
	70	u32 max_area;
	71	max_area = le32_to_cpu(((u32 )desc));
	72	DRM_DEBUG("DL chip limited to %d pixel modes\n",
	73	max_area);
	74	udl->sku_pixel_limit = max_area;
	75	break;
	76	}
	77	default:
	78	break;
	79	}
	80	desc += length;
	81	}
	82	}
	83
	84	goto success;
	85
	86	unrecognized:
	87	/* allow udlfb to load for now even if firmware unrecognized */
	88	DRM_ERROR("Unrecognized vendor firmware descriptor\n");
	89
	90	success:
	91	kfree(buf);
	92	return true;
	93	}
	94
d1c151dc JL	95	/*
	96	* Need to ensure a channel is selected before submitting URBs
	97	*/
	98	static int udl_select_std_channel(struct udl_device *udl)
	99	{
	100	int ret;
	101	u8 set_def_chn[] = {0x57, 0xCD, 0xDC, 0xA7,
	102	0x1C, 0x88, 0x5E, 0x15,
	103	0x60, 0xFE, 0xC6, 0x97,
	104	0x16, 0x3D, 0x47, 0xF2};
	105
	106	ret = usb_control_msg(udl->udev,
	107	usb_sndctrlpipe(udl->udev, 0),
	108	NR_USB_REQUEST_CHANNEL,
	109	(USB_DIR_OUT \| USB_TYPE_VENDOR), 0, 0,
	110	set_def_chn, sizeof(set_def_chn),
	111	USB_CTRL_SET_TIMEOUT);
	112	return ret < 0 ? ret : 0;
	113	}
	114
5320918b DA	115	static void udl_release_urb_work(struct work_struct *work)
	116	{
	117	struct urb_node *unode = container_of(work, struct urb_node,
	118	release_urb_work.work);
	119
	120	up(&unode->dev->urbs.limit_sem);
	121	}
	122
	123	void udl_urb_completion(struct urb *urb)
	124	{
	125	struct urb_node *unode = urb->context;
	126	struct udl_device *udl = unode->dev;
	127	unsigned long flags;
	128
	129	/* sync/async unlink faults aren't errors */
	130	if (urb->status) {
	131	if (!(urb->status == -ENOENT \|\|
	132	urb->status == -ECONNRESET \|\|
	133	urb->status == -ESHUTDOWN)) {
	134	DRM_ERROR("%s - nonzero write bulk status received: %d\n",
	135	__func__, urb->status);
	136	atomic_set(&udl->lost_pixels, 1);
	137	}
	138	}
	139
	140	urb->transfer_buffer_length = udl->urbs.size; /* reset to actual */
	141
	142	spin_lock_irqsave(&udl->urbs.lock, flags);
	143	list_add_tail(&unode->entry, &udl->urbs.list);
	144	udl->urbs.available++;
	145	spin_unlock_irqrestore(&udl->urbs.lock, flags);
	146
	147	#if 0
	148	/*
	149	* When using fb_defio, we deadlock if up() is called
	150	* while another is waiting. So queue to another process.
	151	*/
	152	if (fb_defio)
	153	schedule_delayed_work(&unode->release_urb_work, 0);
	154	else
	155	#endif
	156	up(&udl->urbs.limit_sem);
	157	}
	158
	159	static void udl_free_urb_list(struct drm_device *dev)
	160	{
	161	struct udl_device *udl = dev->dev_private;
	162	int count = udl->urbs.count;
	163	struct list_head *node;
	164	struct urb_node *unode;
	165	struct urb *urb;
	166	int ret;
	167	unsigned long flags;
	168
	169	DRM_DEBUG("Waiting for completes and freeing all render urbs\n");
	170
	171	/* keep waiting and freeing, until we've got 'em all */
	172	while (count--) {
	173
	174	/* Getting interrupted means a leak, but ok at shutdown*/
	175	ret = down_interruptible(&udl->urbs.limit_sem);
	176	if (ret)
	177	break;
	178
179	spin_lock_irqsave(&udl->urbs.lock, flags);
180
181	node = udl->urbs.list.next; /* have reserved one with sem */
182	list_del_init(node);
183
184	spin_unlock_irqrestore(&udl->urbs.lock, flags);
185
186	unode = list_entry(node, struct urb_node, entry);
187	urb = unode->urb;
188
189	/* Free each separately allocated piece */
190	usb_free_coherent(urb->dev, udl->urbs.size,
191	urb->transfer_buffer, urb->transfer_dma);
192	usb_free_urb(urb);
193	kfree(node);
194	}
195	udl->urbs.count = 0;
196	}
197
198	static int udl_alloc_urb_list(struct drm_device *dev, int count, size_t size)
199	{
200	struct udl_device *udl = dev->dev_private;
201	int i = 0;
202	struct urb *urb;
203	struct urb_node *unode;
204	char *buf;
205
206	spin_lock_init(&udl->urbs.lock);
207
208	udl->urbs.size = size;
209	INIT_LIST_HEAD(&udl->urbs.list);
210
211	while (i < count) {
212	unode = kzalloc(sizeof(struct urb_node), GFP_KERNEL);
213	if (!unode)
214	break;
215	unode->dev = udl;
216
217	INIT_DELAYED_WORK(&unode->release_urb_work,
218	udl_release_urb_work);
219
220	urb = usb_alloc_urb(0, GFP_KERNEL);
221	if (!urb) {
222	kfree(unode);
223	break;
224	}
225	unode->urb = urb;
226
d4f68a75	227	buf = usb_alloc_coherent(udl->udev, MAX_TRANSFER, GFP_KERNEL,
5320918b DA	228	&urb->transfer_dma);
	229	if (!buf) {
	230	kfree(unode);
	231	usb_free_urb(urb);
	232	break;
	233	}
	234
	235	/* urb->transfer_buffer_length set to actual before submit */
d4f68a75	236	usb_fill_bulk_urb(urb, udl->udev, usb_sndbulkpipe(udl->udev, 1),
5320918b DA	237	buf, size, udl_urb_completion, unode);
	238	urb->transfer_flags \|= URB_NO_TRANSFER_DMA_MAP;
	239
	240	list_add_tail(&unode->entry, &udl->urbs.list);
	241
	242	i++;
	243	}
	244
	245	sema_init(&udl->urbs.limit_sem, i);
	246	udl->urbs.count = i;
	247	udl->urbs.available = i;
	248
	249	DRM_DEBUG("allocated %d %d byte urbs\n", i, (int) size);
	250
	251	return i;
	252	}
	253
	254	struct urb udl_get_urb(struct drm_device dev)
	255	{
	256	struct udl_device *udl = dev->dev_private;
	257	int ret = 0;
	258	struct list_head *entry;
	259	struct urb_node *unode;
	260	struct urb *urb = NULL;
	261	unsigned long flags;
	262
	263	/* Wait for an in-flight buffer to complete and get re-queued */
	264	ret = down_timeout(&udl->urbs.limit_sem, GET_URB_TIMEOUT);
	265	if (ret) {
	266	atomic_set(&udl->lost_pixels, 1);
	267	DRM_INFO("wait for urb interrupted: %x available: %d\n",
	268	ret, udl->urbs.available);
	269	goto error;
	270	}
	271
	272	spin_lock_irqsave(&udl->urbs.lock, flags);
	273
	274	BUG_ON(list_empty(&udl->urbs.list)); /* reserved one with limit_sem */
	275	entry = udl->urbs.list.next;
	276	list_del_init(entry);
	277	udl->urbs.available--;
	278
	279	spin_unlock_irqrestore(&udl->urbs.lock, flags);
	280
	281	unode = list_entry(entry, struct urb_node, entry);
	282	urb = unode->urb;
	283
	284	error:
	285	return urb;
	286	}
	287
	288	int udl_submit_urb(struct drm_device dev, struct urb urb, size_t len)
	289	{
	290	struct udl_device *udl = dev->dev_private;
	291	int ret;
	292
	293	BUG_ON(len > udl->urbs.size);
	294
	295	urb->transfer_buffer_length = len; /* set to actual payload len */
	296	ret = usb_submit_urb(urb, GFP_ATOMIC);
	297	if (ret) {
	298	udl_urb_completion(urb); /* because no one else will */
	299	atomic_set(&udl->lost_pixels, 1);
	300	DRM_ERROR("usb_submit_urb error %x\n", ret);
301	}
302	return ret;
303	}
304
305	int udl_driver_load(struct drm_device *dev, unsigned long flags)
306	{
d4f68a75	307	struct usb_device udev = (void)flags;
5320918b	308	struct udl_device *udl;
737583f0	309	int ret = -ENOMEM;
5320918b DA	310
	311	DRM_DEBUG("\n");
	312	udl = kzalloc(sizeof(struct udl_device), GFP_KERNEL);
	313	if (!udl)
	314	return -ENOMEM;
	315
d4f68a75	316	udl->udev = udev;
5320918b DA	317	udl->ddev = dev;
	318	dev->dev_private = udl;
	319
d4f68a75	320	if (!udl_parse_vendor_descriptor(dev, udl->udev)) {
e39a52da	321	ret = -ENODEV;
5320918b DA	322	DRM_ERROR("firmware not recognized. Assume incompatible device\n");
	323	goto err;
	324	}
	325
d1c151dc JL	326	if (udl_select_std_channel(udl))
	327	DRM_ERROR("Selecting channel failed\n");
	328
5320918b	329	if (!udl_alloc_urb_list(dev, WRITES_IN_FLIGHT, MAX_TRANSFER)) {
5320918b DA	330	DRM_ERROR("udl_alloc_urb_list failed\n");
	331	goto err;
	332	}
	333
	334	DRM_DEBUG("\n");
	335	ret = udl_modeset_init(dev);
26507b06 SM	336	if (ret)
26507b06 SM	337	goto err;
5320918b DA	338
5320918b DA	339	ret = udl_fbdev_init(dev);
26507b06 SM	340	if (ret)
	341	goto err;
	342
	343	ret = drm_vblank_init(dev, 1);
	344	if (ret)
	345	goto err_fb;
	346
5320918b	347	return 0;
26507b06 SM	348	err_fb:
26507b06 SM	349	udl_fbdev_cleanup(dev);
5320918b	350	err:
26507b06 SM	351	if (udl->urbs.count)
26507b06 SM	352	udl_free_urb_list(dev);
5320918b DA	353	kfree(udl);
	354	DRM_ERROR("%d\n", ret);
	355	return ret;
	356	}
	357
	358	int udl_drop_usb(struct drm_device *dev)
	359	{
	360	udl_free_urb_list(dev);
	361	return 0;
	362	}
	363
	364	int udl_driver_unload(struct drm_device *dev)
	365	{
	366	struct udl_device *udl = dev->dev_private;
	367
26507b06 SM	368	drm_vblank_cleanup(dev);
26507b06 SM	369
5320918b DA	370	if (udl->urbs.count)
	371	udl_free_urb_list(dev);
	372
	373	udl_fbdev_cleanup(dev);
	374	udl_modeset_cleanup(dev);
	375	kfree(udl);
	376	return 0;
	377	}