aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/uvc
diff options
context:
space:
mode:
authorLaurent Pinchart <laurent.pinchart@skynet.be>2009-06-28 07:37:50 -0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-09-12 11:18:32 -0400
commit35f02a681b72ece756cf005e17f305a72329c140 (patch)
treece566b9875213470d355a50bd8c6f9edeb1dd8dd /drivers/media/video/uvc
parent6c428b578b15a1dbf40832d3aeed43761940b81f (diff)
V4L/DVB (12378): uvcvideo: Restructure the driver to support multiple simultaneous streams.
As a first step towards multiple streaming interfaces support, reorganize the driver's data structures to cleanly separate video control and video streaming data. Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/uvc')
-rw-r--r--drivers/media/video/uvc/uvc_driver.c174
-rw-r--r--drivers/media/video/uvc/uvc_isight.c7
-rw-r--r--drivers/media/video/uvc/uvc_v4l2.c195
-rw-r--r--drivers/media/video/uvc/uvc_video.c415
-rw-r--r--drivers/media/video/uvc/uvcvideo.h86
5 files changed, 456 insertions, 421 deletions
diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c
index e17216c96ac5..81bf67126abf 100644
--- a/drivers/media/video/uvc/uvc_driver.c
+++ b/drivers/media/video/uvc/uvc_driver.c
@@ -551,6 +551,7 @@ static int uvc_parse_streaming(struct uvc_device *dev,
551 } 551 }
552 552
553 mutex_init(&streaming->mutex); 553 mutex_init(&streaming->mutex);
554 streaming->dev = dev;
554 streaming->intf = usb_get_intf(intf); 555 streaming->intf = usb_get_intf(intf);
555 streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; 556 streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber;
556 557
@@ -751,7 +752,7 @@ static int uvc_parse_streaming(struct uvc_device *dev,
751 streaming->maxpsize = psize; 752 streaming->maxpsize = psize;
752 } 753 }
753 754
754 list_add_tail(&streaming->list, &dev->streaming); 755 list_add_tail(&streaming->list, &dev->streams);
755 return 0; 756 return 0;
756 757
757error: 758error:
@@ -1167,13 +1168,75 @@ next_descriptor:
1167 */ 1168 */
1168static void uvc_unregister_video(struct uvc_device *dev) 1169static void uvc_unregister_video(struct uvc_device *dev)
1169{ 1170{
1170 if (dev->video.vdev) { 1171 struct uvc_streaming *streaming;
1171 if (dev->video.vdev->minor == -1) 1172
1172 video_device_release(dev->video.vdev); 1173 list_for_each_entry(streaming, &dev->streams, list) {
1174 if (streaming->vdev == NULL)
1175 continue;
1176
1177 if (streaming->vdev->minor == -1)
1178 video_device_release(streaming->vdev);
1173 else 1179 else
1174 video_unregister_device(dev->video.vdev); 1180 video_unregister_device(streaming->vdev);
1175 dev->video.vdev = NULL; 1181 streaming->vdev = NULL;
1182 }
1183}
1184
1185static int uvc_register_video(struct uvc_device *dev,
1186 struct uvc_streaming *stream)
1187{
1188 struct video_device *vdev;
1189 struct uvc_entity *term;
1190 int ret;
1191
1192 if (uvc_trace_param & UVC_TRACE_PROBE) {
1193 uvc_printk(KERN_INFO, "Found a valid video chain (");
1194 list_for_each_entry(term, &dev->video.iterms, chain) {
1195 printk("%d", term->id);
1196 if (term->chain.next != &dev->video.iterms)
1197 printk(",");
1198 }
1199 printk(" -> %d).\n", dev->video.oterm->id);
1200 }
1201
1202 /* Initialize the streaming interface with default streaming
1203 * parameters.
1204 */
1205 ret = uvc_video_init(stream);
1206 if (ret < 0) {
1207 uvc_printk(KERN_ERR, "Failed to initialize the device "
1208 "(%d).\n", ret);
1209 return ret;
1210 }
1211
1212 /* Register the device with V4L. */
1213 vdev = video_device_alloc();
1214 if (vdev == NULL)
1215 return -1;
1216
1217 /* We already hold a reference to dev->udev. The video device will be
1218 * unregistered before the reference is released, so we don't need to
1219 * get another one.
1220 */
1221 vdev->parent = &dev->intf->dev;
1222 vdev->minor = -1;
1223 vdev->fops = &uvc_fops;
1224 vdev->release = video_device_release;
1225 strlcpy(vdev->name, dev->name, sizeof vdev->name);
1226
1227 /* Set the driver data before calling video_register_device, otherwise
1228 * uvc_v4l2_open might race us.
1229 */
1230 stream->vdev = vdev;
1231 video_set_drvdata(vdev, stream);
1232
1233 if (video_register_device(vdev, VFL_TYPE_GRABBER, -1) < 0) {
1234 stream->vdev = NULL;
1235 video_device_release(vdev);
1236 return -1;
1176 } 1237 }
1238
1239 return 0;
1177} 1240}
1178 1241
1179/* 1242/*
@@ -1419,7 +1482,7 @@ static int uvc_scan_chain(struct uvc_video_device *video)
1419} 1482}
1420 1483
1421/* 1484/*
1422 * Register the video devices. 1485 * Scan the device for video chains and register video devices.
1423 * 1486 *
1424 * The driver currently supports a single video device per control interface 1487 * The driver currently supports a single video device per control interface
1425 * only. The terminal and units must match the following structure: 1488 * only. The terminal and units must match the following structure:
@@ -1432,15 +1495,14 @@ static int uvc_scan_chain(struct uvc_video_device *video)
1432 * Extension Units connected to the main chain as single-unit branches are 1495 * Extension Units connected to the main chain as single-unit branches are
1433 * also supported. 1496 * also supported.
1434 */ 1497 */
1435static int uvc_register_video(struct uvc_device *dev) 1498static int uvc_scan_device(struct uvc_device *dev)
1436{ 1499{
1437 struct video_device *vdev;
1438 struct uvc_entity *term; 1500 struct uvc_entity *term;
1439 int found = 0, ret; 1501 int found = 0;
1440 1502
1441 /* Check if the control interface matches the structure we expect. */ 1503 /* Check if the control interface matches the structure we expect. */
1442 list_for_each_entry(term, &dev->entities, list) { 1504 list_for_each_entry(term, &dev->entities, list) {
1443 struct uvc_streaming *streaming; 1505 struct uvc_streaming *stream;
1444 1506
1445 if (!UVC_ENTITY_IS_TERM(term) || !UVC_ENTITY_IS_OTERM(term)) 1507 if (!UVC_ENTITY_IS_TERM(term) || !UVC_ENTITY_IS_OTERM(term))
1446 continue; 1508 continue;
@@ -1454,17 +1516,14 @@ static int uvc_register_video(struct uvc_device *dev)
1454 if (uvc_scan_chain(&dev->video) < 0) 1516 if (uvc_scan_chain(&dev->video) < 0)
1455 continue; 1517 continue;
1456 1518
1457 list_for_each_entry(streaming, &dev->streaming, list) { 1519 list_for_each_entry(stream, &dev->streams, list) {
1458 if (streaming->header.bTerminalLink == 1520 if (stream->header.bTerminalLink ==
1459 dev->video.sterm->id) { 1521 dev->video.sterm->id) {
1460 dev->video.streaming = streaming; 1522 uvc_register_video(dev, stream);
1461 found = 1; 1523 found = 1;
1462 break; 1524 break;
1463 } 1525 }
1464 } 1526 }
1465
1466 if (found)
1467 break;
1468 } 1527 }
1469 1528
1470 if (!found) { 1529 if (!found) {
@@ -1472,55 +1531,6 @@ static int uvc_register_video(struct uvc_device *dev)
1472 return -1; 1531 return -1;
1473 } 1532 }
1474 1533
1475 if (uvc_trace_param & UVC_TRACE_PROBE) {
1476 uvc_printk(KERN_INFO, "Found a valid video chain (");
1477 list_for_each_entry(term, &dev->video.iterms, chain) {
1478 printk("%d", term->id);
1479 if (term->chain.next != &dev->video.iterms)
1480 printk(",");
1481 }
1482 printk(" -> %d).\n", dev->video.oterm->id);
1483 }
1484
1485 /* Initialize the video buffers queue. */
1486 uvc_queue_init(&dev->video.queue, dev->video.streaming->type);
1487
1488 /* Initialize the streaming interface with default streaming
1489 * parameters.
1490 */
1491 if ((ret = uvc_video_init(&dev->video)) < 0) {
1492 uvc_printk(KERN_ERR, "Failed to initialize the device "
1493 "(%d).\n", ret);
1494 return ret;
1495 }
1496
1497 /* Register the device with V4L. */
1498 vdev = video_device_alloc();
1499 if (vdev == NULL)
1500 return -1;
1501
1502 /* We already hold a reference to dev->udev. The video device will be
1503 * unregistered before the reference is released, so we don't need to
1504 * get another one.
1505 */
1506 vdev->parent = &dev->intf->dev;
1507 vdev->minor = -1;
1508 vdev->fops = &uvc_fops;
1509 vdev->release = video_device_release;
1510 strlcpy(vdev->name, dev->name, sizeof vdev->name);
1511
1512 /* Set the driver data before calling video_register_device, otherwise
1513 * uvc_v4l2_open might race us.
1514 */
1515 dev->video.vdev = vdev;
1516 video_set_drvdata(vdev, &dev->video);
1517
1518 if (video_register_device(vdev, VFL_TYPE_GRABBER, -1) < 0) {
1519 dev->video.vdev = NULL;
1520 video_device_release(vdev);
1521 return -1;
1522 }
1523
1524 return 0; 1534 return 0;
1525} 1535}
1526 1536
@@ -1559,7 +1569,7 @@ void uvc_delete(struct kref *kref)
1559 kfree(entity); 1569 kfree(entity);
1560 } 1570 }
1561 1571
1562 list_for_each_safe(p, n, &dev->streaming) { 1572 list_for_each_safe(p, n, &dev->streams) {
1563 struct uvc_streaming *streaming; 1573 struct uvc_streaming *streaming;
1564 streaming = list_entry(p, struct uvc_streaming, list); 1574 streaming = list_entry(p, struct uvc_streaming, list);
1565 usb_driver_release_interface(&uvc_driver.driver, 1575 usb_driver_release_interface(&uvc_driver.driver,
@@ -1593,7 +1603,7 @@ static int uvc_probe(struct usb_interface *intf,
1593 return -ENOMEM; 1603 return -ENOMEM;
1594 1604
1595 INIT_LIST_HEAD(&dev->entities); 1605 INIT_LIST_HEAD(&dev->entities);
1596 INIT_LIST_HEAD(&dev->streaming); 1606 INIT_LIST_HEAD(&dev->streams);
1597 kref_init(&dev->kref); 1607 kref_init(&dev->kref);
1598 atomic_set(&dev->users, 0); 1608 atomic_set(&dev->users, 0);
1599 1609
@@ -1634,8 +1644,8 @@ static int uvc_probe(struct usb_interface *intf,
1634 if (uvc_ctrl_init_device(dev) < 0) 1644 if (uvc_ctrl_init_device(dev) < 0)
1635 goto error; 1645 goto error;
1636 1646
1637 /* Register the video devices. */ 1647 /* Scan the device for video chains and register video devices. */
1638 if (uvc_register_video(dev) < 0) 1648 if (uvc_scan_device(dev) < 0)
1639 goto error; 1649 goto error;
1640 1650
1641 /* Save our data pointer in the interface data. */ 1651 /* Save our data pointer in the interface data. */
@@ -1689,6 +1699,7 @@ static void uvc_disconnect(struct usb_interface *intf)
1689static int uvc_suspend(struct usb_interface *intf, pm_message_t message) 1699static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
1690{ 1700{
1691 struct uvc_device *dev = usb_get_intfdata(intf); 1701 struct uvc_device *dev = usb_get_intfdata(intf);
1702 struct uvc_streaming *stream;
1692 1703
1693 uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", 1704 uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n",
1694 intf->cur_altsetting->desc.bInterfaceNumber); 1705 intf->cur_altsetting->desc.bInterfaceNumber);
@@ -1698,18 +1709,20 @@ static int uvc_suspend(struct usb_interface *intf, pm_message_t message)
1698 UVC_SC_VIDEOCONTROL) 1709 UVC_SC_VIDEOCONTROL)
1699 return uvc_status_suspend(dev); 1710 return uvc_status_suspend(dev);
1700 1711
1701 if (dev->video.streaming->intf != intf) { 1712 list_for_each_entry(stream, &dev->streams, list) {
1702 uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB " 1713 if (stream->intf == intf)
1703 "interface mismatch.\n"); 1714 return uvc_video_suspend(stream);
1704 return -EINVAL;
1705 } 1715 }
1706 1716
1707 return uvc_video_suspend(&dev->video); 1717 uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface "
1718 "mismatch.\n");
1719 return -EINVAL;
1708} 1720}
1709 1721
1710static int __uvc_resume(struct usb_interface *intf, int reset) 1722static int __uvc_resume(struct usb_interface *intf, int reset)
1711{ 1723{
1712 struct uvc_device *dev = usb_get_intfdata(intf); 1724 struct uvc_device *dev = usb_get_intfdata(intf);
1725 struct uvc_streaming *stream;
1713 1726
1714 uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", 1727 uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n",
1715 intf->cur_altsetting->desc.bInterfaceNumber); 1728 intf->cur_altsetting->desc.bInterfaceNumber);
@@ -1726,13 +1739,14 @@ static int __uvc_resume(struct usb_interface *intf, int reset)
1726 return uvc_status_resume(dev); 1739 return uvc_status_resume(dev);
1727 } 1740 }
1728 1741
1729 if (dev->video.streaming->intf != intf) { 1742 list_for_each_entry(stream, &dev->streams, list) {
1730 uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB " 1743 if (stream->intf == intf)
1731 "interface mismatch.\n"); 1744 return uvc_video_resume(stream);
1732 return -EINVAL;
1733 } 1745 }
1734 1746
1735 return uvc_video_resume(&dev->video); 1747 uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface "
1748 "mismatch.\n");
1749 return -EINVAL;
1736} 1750}
1737 1751
1738static int uvc_resume(struct usb_interface *intf) 1752static int uvc_resume(struct usb_interface *intf)
diff --git a/drivers/media/video/uvc/uvc_isight.c b/drivers/media/video/uvc/uvc_isight.c
index 436f462685a0..a9285b570dbe 100644
--- a/drivers/media/video/uvc/uvc_isight.c
+++ b/drivers/media/video/uvc/uvc_isight.c
@@ -99,7 +99,7 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
99 return 0; 99 return 0;
100} 100}
101 101
102void uvc_video_decode_isight(struct urb *urb, struct uvc_video_device *video, 102void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
103 struct uvc_buffer *buf) 103 struct uvc_buffer *buf)
104{ 104{
105 int ret, i; 105 int ret, i;
@@ -120,7 +120,7 @@ void uvc_video_decode_isight(struct urb *urb, struct uvc_video_device *video,
120 * processes the data of the first payload of the new frame. 120 * processes the data of the first payload of the new frame.
121 */ 121 */
122 do { 122 do {
123 ret = isight_decode(&video->queue, buf, 123 ret = isight_decode(&stream->queue, buf,
124 urb->transfer_buffer + 124 urb->transfer_buffer +
125 urb->iso_frame_desc[i].offset, 125 urb->iso_frame_desc[i].offset,
126 urb->iso_frame_desc[i].actual_length); 126 urb->iso_frame_desc[i].actual_length);
@@ -130,7 +130,8 @@ void uvc_video_decode_isight(struct urb *urb, struct uvc_video_device *video,
130 130
131 if (buf->state == UVC_BUF_STATE_DONE || 131 if (buf->state == UVC_BUF_STATE_DONE ||
132 buf->state == UVC_BUF_STATE_ERROR) 132 buf->state == UVC_BUF_STATE_ERROR)
133 buf = uvc_queue_next_buffer(&video->queue, buf); 133 buf = uvc_queue_next_buffer(&stream->queue,
134 buf);
134 } while (ret == -EAGAIN); 135 } while (ret == -EAGAIN);
135 } 136 }
136} 137}
diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c
index 87cb9cc75af2..7e847bbaf2a4 100644
--- a/drivers/media/video/uvc/uvc_v4l2.c
+++ b/drivers/media/video/uvc/uvc_v4l2.c
@@ -103,7 +103,7 @@ static __u32 uvc_try_frame_interval(struct uvc_frame *frame, __u32 interval)
103 return interval; 103 return interval;
104} 104}
105 105
106static int uvc_v4l2_try_format(struct uvc_video_device *video, 106static int uvc_v4l2_try_format(struct uvc_streaming *stream,
107 struct v4l2_format *fmt, struct uvc_streaming_control *probe, 107 struct v4l2_format *fmt, struct uvc_streaming_control *probe,
108 struct uvc_format **uvc_format, struct uvc_frame **uvc_frame) 108 struct uvc_format **uvc_format, struct uvc_frame **uvc_frame)
109{ 109{
@@ -116,7 +116,7 @@ static int uvc_v4l2_try_format(struct uvc_video_device *video,
116 int ret = 0; 116 int ret = 0;
117 __u8 *fcc; 117 __u8 *fcc;
118 118
119 if (fmt->type != video->streaming->type) 119 if (fmt->type != stream->type)
120 return -EINVAL; 120 return -EINVAL;
121 121
122 fcc = (__u8 *)&fmt->fmt.pix.pixelformat; 122 fcc = (__u8 *)&fmt->fmt.pix.pixelformat;
@@ -126,8 +126,8 @@ static int uvc_v4l2_try_format(struct uvc_video_device *video,
126 fmt->fmt.pix.width, fmt->fmt.pix.height); 126 fmt->fmt.pix.width, fmt->fmt.pix.height);
127 127
128 /* Check if the hardware supports the requested format. */ 128 /* Check if the hardware supports the requested format. */
129 for (i = 0; i < video->streaming->nformats; ++i) { 129 for (i = 0; i < stream->nformats; ++i) {
130 format = &video->streaming->format[i]; 130 format = &stream->format[i];
131 if (format->fcc == fmt->fmt.pix.pixelformat) 131 if (format->fcc == fmt->fmt.pix.pixelformat)
132 break; 132 break;
133 } 133 }
@@ -191,12 +191,13 @@ static int uvc_v4l2_try_format(struct uvc_video_device *video,
191 * developers test their webcams with the Linux driver as well as with 191 * developers test their webcams with the Linux driver as well as with
192 * the Windows driver). 192 * the Windows driver).
193 */ 193 */
194 if (video->dev->quirks & UVC_QUIRK_PROBE_EXTRAFIELDS) 194 if (stream->dev->quirks & UVC_QUIRK_PROBE_EXTRAFIELDS)
195 probe->dwMaxVideoFrameSize = 195 probe->dwMaxVideoFrameSize =
196 video->streaming->ctrl.dwMaxVideoFrameSize; 196 stream->ctrl.dwMaxVideoFrameSize;
197 197
198 /* Probe the device. */ 198 /* Probe the device. */
199 if ((ret = uvc_probe_video(video, probe)) < 0) 199 ret = uvc_probe_video(stream, probe);
200 if (ret < 0)
200 goto done; 201 goto done;
201 202
202 fmt->fmt.pix.width = frame->wWidth; 203 fmt->fmt.pix.width = frame->wWidth;
@@ -216,13 +217,13 @@ done:
216 return ret; 217 return ret;
217} 218}
218 219
219static int uvc_v4l2_get_format(struct uvc_video_device *video, 220static int uvc_v4l2_get_format(struct uvc_streaming *stream,
220 struct v4l2_format *fmt) 221 struct v4l2_format *fmt)
221{ 222{
222 struct uvc_format *format = video->streaming->cur_format; 223 struct uvc_format *format = stream->cur_format;
223 struct uvc_frame *frame = video->streaming->cur_frame; 224 struct uvc_frame *frame = stream->cur_frame;
224 225
225 if (fmt->type != video->streaming->type) 226 if (fmt->type != stream->type)
226 return -EINVAL; 227 return -EINVAL;
227 228
228 if (format == NULL || frame == NULL) 229 if (format == NULL || frame == NULL)
@@ -233,14 +234,14 @@ static int uvc_v4l2_get_format(struct uvc_video_device *video,
233 fmt->fmt.pix.height = frame->wHeight; 234 fmt->fmt.pix.height = frame->wHeight;
234 fmt->fmt.pix.field = V4L2_FIELD_NONE; 235 fmt->fmt.pix.field = V4L2_FIELD_NONE;
235 fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8; 236 fmt->fmt.pix.bytesperline = format->bpp * frame->wWidth / 8;
236 fmt->fmt.pix.sizeimage = video->streaming->ctrl.dwMaxVideoFrameSize; 237 fmt->fmt.pix.sizeimage = stream->ctrl.dwMaxVideoFrameSize;
237 fmt->fmt.pix.colorspace = format->colorspace; 238 fmt->fmt.pix.colorspace = format->colorspace;
238 fmt->fmt.pix.priv = 0; 239 fmt->fmt.pix.priv = 0;
239 240
240 return 0; 241 return 0;
241} 242}
242 243
243static int uvc_v4l2_set_format(struct uvc_video_device *video, 244static int uvc_v4l2_set_format(struct uvc_streaming *stream,
244 struct v4l2_format *fmt) 245 struct v4l2_format *fmt)
245{ 246{
246 struct uvc_streaming_control probe; 247 struct uvc_streaming_control probe;
@@ -248,39 +249,39 @@ static int uvc_v4l2_set_format(struct uvc_video_device *video,
248 struct uvc_frame *frame; 249 struct uvc_frame *frame;
249 int ret; 250 int ret;
250 251
251 if (fmt->type != video->streaming->type) 252 if (fmt->type != stream->type)
252 return -EINVAL; 253 return -EINVAL;
253 254
254 if (uvc_queue_allocated(&video->queue)) 255 if (uvc_queue_allocated(&stream->queue))
255 return -EBUSY; 256 return -EBUSY;
256 257
257 ret = uvc_v4l2_try_format(video, fmt, &probe, &format, &frame); 258 ret = uvc_v4l2_try_format(stream, fmt, &probe, &format, &frame);
258 if (ret < 0) 259 if (ret < 0)
259 return ret; 260 return ret;
260 261
261 memcpy(&video->streaming->ctrl, &probe, sizeof probe); 262 memcpy(&stream->ctrl, &probe, sizeof probe);
262 video->streaming->cur_format = format; 263 stream->cur_format = format;
263 video->streaming->cur_frame = frame; 264 stream->cur_frame = frame;
264 265
265 return 0; 266 return 0;
266} 267}
267 268
268static int uvc_v4l2_get_streamparm(struct uvc_video_device *video, 269static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream,
269 struct v4l2_streamparm *parm) 270 struct v4l2_streamparm *parm)
270{ 271{
271 uint32_t numerator, denominator; 272 uint32_t numerator, denominator;
272 273
273 if (parm->type != video->streaming->type) 274 if (parm->type != stream->type)
274 return -EINVAL; 275 return -EINVAL;
275 276
276 numerator = video->streaming->ctrl.dwFrameInterval; 277 numerator = stream->ctrl.dwFrameInterval;
277 denominator = 10000000; 278 denominator = 10000000;
278 uvc_simplify_fraction(&numerator, &denominator, 8, 333); 279 uvc_simplify_fraction(&numerator, &denominator, 8, 333);
279 280
280 memset(parm, 0, sizeof *parm); 281 memset(parm, 0, sizeof *parm);
281 parm->type = video->streaming->type; 282 parm->type = stream->type;
282 283
283 if (video->streaming->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { 284 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
284 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; 285 parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
285 parm->parm.capture.capturemode = 0; 286 parm->parm.capture.capturemode = 0;
286 parm->parm.capture.timeperframe.numerator = numerator; 287 parm->parm.capture.timeperframe.numerator = numerator;
@@ -297,19 +298,19 @@ static int uvc_v4l2_get_streamparm(struct uvc_video_device *video,
297 return 0; 298 return 0;
298} 299}
299 300
300static int uvc_v4l2_set_streamparm(struct uvc_video_device *video, 301static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
301 struct v4l2_streamparm *parm) 302 struct v4l2_streamparm *parm)
302{ 303{
303 struct uvc_frame *frame = video->streaming->cur_frame; 304 struct uvc_frame *frame = stream->cur_frame;
304 struct uvc_streaming_control probe; 305 struct uvc_streaming_control probe;
305 struct v4l2_fract timeperframe; 306 struct v4l2_fract timeperframe;
306 uint32_t interval; 307 uint32_t interval;
307 int ret; 308 int ret;
308 309
309 if (parm->type != video->streaming->type) 310 if (parm->type != stream->type)
310 return -EINVAL; 311 return -EINVAL;
311 312
312 if (uvc_queue_streaming(&video->queue)) 313 if (uvc_queue_streaming(&stream->queue))
313 return -EBUSY; 314 return -EBUSY;
314 315
315 if (parm->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 316 if (parm->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
@@ -317,7 +318,7 @@ static int uvc_v4l2_set_streamparm(struct uvc_video_device *video,
317 else 318 else
318 timeperframe = parm->parm.output.timeperframe; 319 timeperframe = parm->parm.output.timeperframe;
319 320
320 memcpy(&probe, &video->streaming->ctrl, sizeof probe); 321 memcpy(&probe, &stream->ctrl, sizeof probe);
321 interval = uvc_fraction_to_interval(timeperframe.numerator, 322 interval = uvc_fraction_to_interval(timeperframe.numerator,
322 timeperframe.denominator); 323 timeperframe.denominator);
323 324
@@ -326,10 +327,11 @@ static int uvc_v4l2_set_streamparm(struct uvc_video_device *video,
326 probe.dwFrameInterval = uvc_try_frame_interval(frame, interval); 327 probe.dwFrameInterval = uvc_try_frame_interval(frame, interval);
327 328
328 /* Probe the device with the new settings. */ 329 /* Probe the device with the new settings. */
329 if ((ret = uvc_probe_video(video, &probe)) < 0) 330 ret = uvc_probe_video(stream, &probe);
331 if (ret < 0)
330 return ret; 332 return ret;
331 333
332 memcpy(&video->streaming->ctrl, &probe, sizeof probe); 334 memcpy(&stream->ctrl, &probe, sizeof probe);
333 335
334 /* Return the actual frame period. */ 336 /* Return the actual frame period. */
335 timeperframe.numerator = probe.dwFrameInterval; 337 timeperframe.numerator = probe.dwFrameInterval;
@@ -382,8 +384,8 @@ static int uvc_acquire_privileges(struct uvc_fh *handle)
382 384
383 /* Check if the device already has a privileged handle. */ 385 /* Check if the device already has a privileged handle. */
384 mutex_lock(&uvc_driver.open_mutex); 386 mutex_lock(&uvc_driver.open_mutex);
385 if (atomic_inc_return(&handle->device->active) != 1) { 387 if (atomic_inc_return(&handle->stream->active) != 1) {
386 atomic_dec(&handle->device->active); 388 atomic_dec(&handle->stream->active);
387 ret = -EBUSY; 389 ret = -EBUSY;
388 goto done; 390 goto done;
389 } 391 }
@@ -398,7 +400,7 @@ done:
398static void uvc_dismiss_privileges(struct uvc_fh *handle) 400static void uvc_dismiss_privileges(struct uvc_fh *handle)
399{ 401{
400 if (handle->state == UVC_HANDLE_ACTIVE) 402 if (handle->state == UVC_HANDLE_ACTIVE)
401 atomic_dec(&handle->device->active); 403 atomic_dec(&handle->stream->active);
402 404
403 handle->state = UVC_HANDLE_PASSIVE; 405 handle->state = UVC_HANDLE_PASSIVE;
404} 406}
@@ -414,45 +416,47 @@ static int uvc_has_privileges(struct uvc_fh *handle)
414 416
415static int uvc_v4l2_open(struct file *file) 417static int uvc_v4l2_open(struct file *file)
416{ 418{
417 struct uvc_video_device *video; 419 struct uvc_streaming *stream;
418 struct uvc_fh *handle; 420 struct uvc_fh *handle;
419 int ret = 0; 421 int ret = 0;
420 422
421 uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_open\n"); 423 uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_open\n");
422 mutex_lock(&uvc_driver.open_mutex); 424 mutex_lock(&uvc_driver.open_mutex);
423 video = video_drvdata(file); 425 stream = video_drvdata(file);
424 426
425 if (video->dev->state & UVC_DEV_DISCONNECTED) { 427 if (stream->dev->state & UVC_DEV_DISCONNECTED) {
426 ret = -ENODEV; 428 ret = -ENODEV;
427 goto done; 429 goto done;
428 } 430 }
429 431
430 ret = usb_autopm_get_interface(video->dev->intf); 432 ret = usb_autopm_get_interface(stream->dev->intf);
431 if (ret < 0) 433 if (ret < 0)
432 goto done; 434 goto done;
433 435
434 /* Create the device handle. */ 436 /* Create the device handle. */
435 handle = kzalloc(sizeof *handle, GFP_KERNEL); 437 handle = kzalloc(sizeof *handle, GFP_KERNEL);
436 if (handle == NULL) { 438 if (handle == NULL) {
437 usb_autopm_put_interface(video->dev->intf); 439 usb_autopm_put_interface(stream->dev->intf);
438 ret = -ENOMEM; 440 ret = -ENOMEM;
439 goto done; 441 goto done;
440 } 442 }
441 443
442 if (atomic_inc_return(&video->dev->users) == 1) { 444 if (atomic_inc_return(&stream->dev->users) == 1) {
443 if ((ret = uvc_status_start(video->dev)) < 0) { 445 ret = uvc_status_start(stream->dev);
444 usb_autopm_put_interface(video->dev->intf); 446 if (ret < 0) {
445 atomic_dec(&video->dev->users); 447 usb_autopm_put_interface(stream->dev->intf);
448 atomic_dec(&stream->dev->users);
446 kfree(handle); 449 kfree(handle);
447 goto done; 450 goto done;
448 } 451 }
449 } 452 }
450 453
451 handle->device = video; 454 handle->video = &stream->dev->video;
455 handle->stream = stream;
452 handle->state = UVC_HANDLE_PASSIVE; 456 handle->state = UVC_HANDLE_PASSIVE;
453 file->private_data = handle; 457 file->private_data = handle;
454 458
455 kref_get(&video->dev->kref); 459 kref_get(&stream->dev->kref);
456 460
457done: 461done:
458 mutex_unlock(&uvc_driver.open_mutex); 462 mutex_unlock(&uvc_driver.open_mutex);
@@ -461,20 +465,20 @@ done:
461 465
462static int uvc_v4l2_release(struct file *file) 466static int uvc_v4l2_release(struct file *file)
463{ 467{
464 struct uvc_video_device *video = video_drvdata(file);
465 struct uvc_fh *handle = (struct uvc_fh *)file->private_data; 468 struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
469 struct uvc_streaming *stream = handle->stream;
466 470
467 uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_release\n"); 471 uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_release\n");
468 472
469 /* Only free resources if this is a privileged handle. */ 473 /* Only free resources if this is a privileged handle. */
470 if (uvc_has_privileges(handle)) { 474 if (uvc_has_privileges(handle)) {
471 uvc_video_enable(video, 0); 475 uvc_video_enable(stream, 0);
472 476
473 mutex_lock(&video->queue.mutex); 477 mutex_lock(&stream->queue.mutex);
474 if (uvc_free_buffers(&video->queue) < 0) 478 if (uvc_free_buffers(&stream->queue) < 0)
475 uvc_printk(KERN_ERR, "uvc_v4l2_release: Unable to " 479 uvc_printk(KERN_ERR, "uvc_v4l2_release: Unable to "
476 "free buffers.\n"); 480 "free buffers.\n");
477 mutex_unlock(&video->queue.mutex); 481 mutex_unlock(&stream->queue.mutex);
478 } 482 }
479 483
480 /* Release the file handle. */ 484 /* Release the file handle. */
@@ -482,19 +486,20 @@ static int uvc_v4l2_release(struct file *file)
482 kfree(handle); 486 kfree(handle);
483 file->private_data = NULL; 487 file->private_data = NULL;
484 488
485 if (atomic_dec_return(&video->dev->users) == 0) 489 if (atomic_dec_return(&stream->dev->users) == 0)
486 uvc_status_stop(video->dev); 490 uvc_status_stop(stream->dev);
487 491
488 usb_autopm_put_interface(video->dev->intf); 492 usb_autopm_put_interface(stream->dev->intf);
489 kref_put(&video->dev->kref, uvc_delete); 493 kref_put(&stream->dev->kref, uvc_delete);
490 return 0; 494 return 0;
491} 495}
492 496
493static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) 497static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
494{ 498{
495 struct video_device *vdev = video_devdata(file); 499 struct video_device *vdev = video_devdata(file);
496 struct uvc_video_device *video = video_get_drvdata(vdev);
497 struct uvc_fh *handle = (struct uvc_fh *)file->private_data; 500 struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
501 struct uvc_video_device *video = handle->video;
502 struct uvc_streaming *stream = handle->stream;
498 long ret = 0; 503 long ret = 0;
499 504
500 switch (cmd) { 505 switch (cmd) {
@@ -506,10 +511,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
506 memset(cap, 0, sizeof *cap); 511 memset(cap, 0, sizeof *cap);
507 strlcpy(cap->driver, "uvcvideo", sizeof cap->driver); 512 strlcpy(cap->driver, "uvcvideo", sizeof cap->driver);
508 strlcpy(cap->card, vdev->name, sizeof cap->card); 513 strlcpy(cap->card, vdev->name, sizeof cap->card);
509 usb_make_path(video->dev->udev, 514 usb_make_path(stream->dev->udev,
510 cap->bus_info, sizeof(cap->bus_info)); 515 cap->bus_info, sizeof(cap->bus_info));
511 cap->version = DRIVER_VERSION_NUMBER; 516 cap->version = DRIVER_VERSION_NUMBER;
512 if (video->streaming->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) 517 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
513 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE 518 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
514 | V4L2_CAP_STREAMING; 519 | V4L2_CAP_STREAMING;
515 else 520 else
@@ -703,15 +708,15 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
703 enum v4l2_buf_type type = fmt->type; 708 enum v4l2_buf_type type = fmt->type;
704 __u32 index = fmt->index; 709 __u32 index = fmt->index;
705 710
706 if (fmt->type != video->streaming->type || 711 if (fmt->type != stream->type ||
707 fmt->index >= video->streaming->nformats) 712 fmt->index >= stream->nformats)
708 return -EINVAL; 713 return -EINVAL;
709 714
710 memset(fmt, 0, sizeof(*fmt)); 715 memset(fmt, 0, sizeof(*fmt));
711 fmt->index = index; 716 fmt->index = index;
712 fmt->type = type; 717 fmt->type = type;
713 718
714 format = &video->streaming->format[fmt->index]; 719 format = &stream->format[fmt->index];
715 fmt->flags = 0; 720 fmt->flags = 0;
716 if (format->flags & UVC_FMT_FLAG_COMPRESSED) 721 if (format->flags & UVC_FMT_FLAG_COMPRESSED)
717 fmt->flags |= V4L2_FMT_FLAG_COMPRESSED; 722 fmt->flags |= V4L2_FMT_FLAG_COMPRESSED;
@@ -729,17 +734,17 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
729 if ((ret = uvc_acquire_privileges(handle)) < 0) 734 if ((ret = uvc_acquire_privileges(handle)) < 0)
730 return ret; 735 return ret;
731 736
732 return uvc_v4l2_try_format(video, arg, &probe, NULL, NULL); 737 return uvc_v4l2_try_format(stream, arg, &probe, NULL, NULL);
733 } 738 }
734 739
735 case VIDIOC_S_FMT: 740 case VIDIOC_S_FMT:
736 if ((ret = uvc_acquire_privileges(handle)) < 0) 741 if ((ret = uvc_acquire_privileges(handle)) < 0)
737 return ret; 742 return ret;
738 743
739 return uvc_v4l2_set_format(video, arg); 744 return uvc_v4l2_set_format(stream, arg);
740 745
741 case VIDIOC_G_FMT: 746 case VIDIOC_G_FMT:
742 return uvc_v4l2_get_format(video, arg); 747 return uvc_v4l2_get_format(stream, arg);
743 748
744 /* Frame size enumeration */ 749 /* Frame size enumeration */
745 case VIDIOC_ENUM_FRAMESIZES: 750 case VIDIOC_ENUM_FRAMESIZES:
@@ -750,10 +755,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
750 int i; 755 int i;
751 756
752 /* Look for the given pixel format */ 757 /* Look for the given pixel format */
753 for (i = 0; i < video->streaming->nformats; i++) { 758 for (i = 0; i < stream->nformats; i++) {
754 if (video->streaming->format[i].fcc == 759 if (stream->format[i].fcc ==
755 fsize->pixel_format) { 760 fsize->pixel_format) {
756 format = &video->streaming->format[i]; 761 format = &stream->format[i];
757 break; 762 break;
758 } 763 }
759 } 764 }
@@ -779,10 +784,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
779 int i; 784 int i;
780 785
781 /* Look for the given pixel format and frame size */ 786 /* Look for the given pixel format and frame size */
782 for (i = 0; i < video->streaming->nformats; i++) { 787 for (i = 0; i < stream->nformats; i++) {
783 if (video->streaming->format[i].fcc == 788 if (stream->format[i].fcc ==
784 fival->pixel_format) { 789 fival->pixel_format) {
785 format = &video->streaming->format[i]; 790 format = &stream->format[i];
786 break; 791 break;
787 } 792 }
788 } 793 }
@@ -832,21 +837,21 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
832 837
833 /* Get & Set streaming parameters */ 838 /* Get & Set streaming parameters */
834 case VIDIOC_G_PARM: 839 case VIDIOC_G_PARM:
835 return uvc_v4l2_get_streamparm(video, arg); 840 return uvc_v4l2_get_streamparm(stream, arg);
836 841
837 case VIDIOC_S_PARM: 842 case VIDIOC_S_PARM:
838 if ((ret = uvc_acquire_privileges(handle)) < 0) 843 if ((ret = uvc_acquire_privileges(handle)) < 0)
839 return ret; 844 return ret;
840 845
841 return uvc_v4l2_set_streamparm(video, arg); 846 return uvc_v4l2_set_streamparm(stream, arg);
842 847
843 /* Cropping and scaling */ 848 /* Cropping and scaling */
844 case VIDIOC_CROPCAP: 849 case VIDIOC_CROPCAP:
845 { 850 {
846 struct v4l2_cropcap *ccap = arg; 851 struct v4l2_cropcap *ccap = arg;
847 struct uvc_frame *frame = video->streaming->cur_frame; 852 struct uvc_frame *frame = stream->cur_frame;
848 853
849 if (ccap->type != video->streaming->type) 854 if (ccap->type != stream->type)
850 return -EINVAL; 855 return -EINVAL;
851 856
852 ccap->bounds.left = 0; 857 ccap->bounds.left = 0;
@@ -870,16 +875,16 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
870 { 875 {
871 struct v4l2_requestbuffers *rb = arg; 876 struct v4l2_requestbuffers *rb = arg;
872 unsigned int bufsize = 877 unsigned int bufsize =
873 video->streaming->ctrl.dwMaxVideoFrameSize; 878 stream->ctrl.dwMaxVideoFrameSize;
874 879
875 if (rb->type != video->streaming->type || 880 if (rb->type != stream->type ||
876 rb->memory != V4L2_MEMORY_MMAP) 881 rb->memory != V4L2_MEMORY_MMAP)
877 return -EINVAL; 882 return -EINVAL;
878 883
879 if ((ret = uvc_acquire_privileges(handle)) < 0) 884 if ((ret = uvc_acquire_privileges(handle)) < 0)
880 return ret; 885 return ret;
881 886
882 ret = uvc_alloc_buffers(&video->queue, rb->count, bufsize); 887 ret = uvc_alloc_buffers(&stream->queue, rb->count, bufsize);
883 if (ret < 0) 888 if (ret < 0)
884 return ret; 889 return ret;
885 890
@@ -892,39 +897,40 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
892 { 897 {
893 struct v4l2_buffer *buf = arg; 898 struct v4l2_buffer *buf = arg;
894 899
895 if (buf->type != video->streaming->type) 900 if (buf->type != stream->type)
896 return -EINVAL; 901 return -EINVAL;
897 902
898 if (!uvc_has_privileges(handle)) 903 if (!uvc_has_privileges(handle))
899 return -EBUSY; 904 return -EBUSY;
900 905
901 return uvc_query_buffer(&video->queue, buf); 906 return uvc_query_buffer(&stream->queue, buf);
902 } 907 }
903 908
904 case VIDIOC_QBUF: 909 case VIDIOC_QBUF:
905 if (!uvc_has_privileges(handle)) 910 if (!uvc_has_privileges(handle))
906 return -EBUSY; 911 return -EBUSY;
907 912
908 return uvc_queue_buffer(&video->queue, arg); 913 return uvc_queue_buffer(&stream->queue, arg);
909 914
910 case VIDIOC_DQBUF: 915 case VIDIOC_DQBUF:
911 if (!uvc_has_privileges(handle)) 916 if (!uvc_has_privileges(handle))
912 return -EBUSY; 917 return -EBUSY;
913 918
914 return uvc_dequeue_buffer(&video->queue, arg, 919 return uvc_dequeue_buffer(&stream->queue, arg,
915 file->f_flags & O_NONBLOCK); 920 file->f_flags & O_NONBLOCK);
916 921
917 case VIDIOC_STREAMON: 922 case VIDIOC_STREAMON:
918 { 923 {
919 int *type = arg; 924 int *type = arg;
920 925
921 if (*type != video->streaming->type) 926 if (*type != stream->type)
922 return -EINVAL; 927 return -EINVAL;
923 928
924 if (!uvc_has_privileges(handle)) 929 if (!uvc_has_privileges(handle))
925 return -EBUSY; 930 return -EBUSY;
926 931
927 if ((ret = uvc_video_enable(video, 1)) < 0) 932 ret = uvc_video_enable(stream, 1);
933 if (ret < 0)
928 return ret; 934 return ret;
929 break; 935 break;
930 } 936 }
@@ -933,13 +939,13 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
933 { 939 {
934 int *type = arg; 940 int *type = arg;
935 941
936 if (*type != video->streaming->type) 942 if (*type != stream->type)
937 return -EINVAL; 943 return -EINVAL;
938 944
939 if (!uvc_has_privileges(handle)) 945 if (!uvc_has_privileges(handle))
940 return -EBUSY; 946 return -EBUSY;
941 947
942 return uvc_video_enable(video, 0); 948 return uvc_video_enable(stream, 0);
943 } 949 }
944 950
945 /* Analog video standards make no sense for digital cameras. */ 951 /* Analog video standards make no sense for digital cameras. */
@@ -1070,7 +1076,9 @@ static struct vm_operations_struct uvc_vm_ops = {
1070 1076
1071static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma) 1077static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1072{ 1078{
1073 struct uvc_video_device *video = video_drvdata(file); 1079 struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
1080 struct uvc_streaming *stream = handle->stream;
1081 struct uvc_video_queue *queue = &stream->queue;
1074 struct uvc_buffer *uninitialized_var(buffer); 1082 struct uvc_buffer *uninitialized_var(buffer);
1075 struct page *page; 1083 struct page *page;
1076 unsigned long addr, start, size; 1084 unsigned long addr, start, size;
@@ -1082,15 +1090,15 @@ static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1082 start = vma->vm_start; 1090 start = vma->vm_start;
1083 size = vma->vm_end - vma->vm_start; 1091 size = vma->vm_end - vma->vm_start;
1084 1092
1085 mutex_lock(&video->queue.mutex); 1093 mutex_lock(&queue->mutex);
1086 1094
1087 for (i = 0; i < video->queue.count; ++i) { 1095 for (i = 0; i < queue->count; ++i) {
1088 buffer = &video->queue.buffer[i]; 1096 buffer = &queue->buffer[i];
1089 if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) 1097 if ((buffer->buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff)
1090 break; 1098 break;
1091 } 1099 }
1092 1100
1093 if (i == video->queue.count || size != video->queue.buf_size) { 1101 if (i == queue->count || size != queue->buf_size) {
1094 ret = -EINVAL; 1102 ret = -EINVAL;
1095 goto done; 1103 goto done;
1096 } 1104 }
@@ -1101,7 +1109,7 @@ static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1101 */ 1109 */
1102 vma->vm_flags |= VM_IO; 1110 vma->vm_flags |= VM_IO;
1103 1111
1104 addr = (unsigned long)video->queue.mem + buffer->buf.m.offset; 1112 addr = (unsigned long)queue->mem + buffer->buf.m.offset;
1105 while (size > 0) { 1113 while (size > 0) {
1106 page = vmalloc_to_page((void *)addr); 1114 page = vmalloc_to_page((void *)addr);
1107 if ((ret = vm_insert_page(vma, start, page)) < 0) 1115 if ((ret = vm_insert_page(vma, start, page)) < 0)
@@ -1117,17 +1125,18 @@ static int uvc_v4l2_mmap(struct file *file, struct vm_area_struct *vma)
1117 uvc_vm_open(vma); 1125 uvc_vm_open(vma);
1118 1126
1119done: 1127done:
1120 mutex_unlock(&video->queue.mutex); 1128 mutex_unlock(&queue->mutex);
1121 return ret; 1129 return ret;
1122} 1130}
1123 1131
1124static unsigned int uvc_v4l2_poll(struct file *file, poll_table *wait) 1132static unsigned int uvc_v4l2_poll(struct file *file, poll_table *wait)
1125{ 1133{
1126 struct uvc_video_device *video = video_drvdata(file); 1134 struct uvc_fh *handle = (struct uvc_fh *)file->private_data;
1135 struct uvc_streaming *stream = handle->stream;
1127 1136
1128 uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_poll\n"); 1137 uvc_trace(UVC_TRACE_CALLS, "uvc_v4l2_poll\n");
1129 1138
1130 return uvc_queue_poll(&video->queue, file, wait); 1139 return uvc_queue_poll(&stream->queue, file, wait);
1131} 1140}
1132 1141
1133const struct v4l2_file_operations uvc_fops = { 1142const struct v4l2_file_operations uvc_fops = {
diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c
index 68468309932d..acbd73ac6bf4 100644
--- a/drivers/media/video/uvc/uvc_video.c
+++ b/drivers/media/video/uvc/uvc_video.c
@@ -61,7 +61,7 @@ int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
61 return 0; 61 return 0;
62} 62}
63 63
64static void uvc_fixup_video_ctrl(struct uvc_video_device *video, 64static void uvc_fixup_video_ctrl(struct uvc_streaming *stream,
65 struct uvc_streaming_control *ctrl) 65 struct uvc_streaming_control *ctrl)
66{ 66{
67 struct uvc_format *format; 67 struct uvc_format *format;
@@ -69,10 +69,10 @@ static void uvc_fixup_video_ctrl(struct uvc_video_device *video,
69 unsigned int i; 69 unsigned int i;
70 70
71 if (ctrl->bFormatIndex <= 0 || 71 if (ctrl->bFormatIndex <= 0 ||
72 ctrl->bFormatIndex > video->streaming->nformats) 72 ctrl->bFormatIndex > stream->nformats)
73 return; 73 return;
74 74
75 format = &video->streaming->format[ctrl->bFormatIndex - 1]; 75 format = &stream->format[ctrl->bFormatIndex - 1];
76 76
77 for (i = 0; i < format->nframes; ++i) { 77 for (i = 0; i < format->nframes; ++i) {
78 if (format->frame[i].bFrameIndex == ctrl->bFrameIndex) { 78 if (format->frame[i].bFrameIndex == ctrl->bFrameIndex) {
@@ -86,12 +86,12 @@ static void uvc_fixup_video_ctrl(struct uvc_video_device *video,
86 86
87 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED) || 87 if (!(format->flags & UVC_FMT_FLAG_COMPRESSED) ||
88 (ctrl->dwMaxVideoFrameSize == 0 && 88 (ctrl->dwMaxVideoFrameSize == 0 &&
89 video->dev->uvc_version < 0x0110)) 89 stream->dev->uvc_version < 0x0110))
90 ctrl->dwMaxVideoFrameSize = 90 ctrl->dwMaxVideoFrameSize =
91 frame->dwMaxVideoFrameBufferSize; 91 frame->dwMaxVideoFrameBufferSize;
92 92
93 if (video->dev->quirks & UVC_QUIRK_FIX_BANDWIDTH && 93 if (stream->dev->quirks & UVC_QUIRK_FIX_BANDWIDTH &&
94 video->streaming->intf->num_altsetting > 1) { 94 stream->intf->num_altsetting > 1) {
95 u32 interval; 95 u32 interval;
96 u32 bandwidth; 96 u32 bandwidth;
97 97
@@ -108,7 +108,7 @@ static void uvc_fixup_video_ctrl(struct uvc_video_device *video,
108 bandwidth = frame->wWidth * frame->wHeight / 8 * format->bpp; 108 bandwidth = frame->wWidth * frame->wHeight / 8 * format->bpp;
109 bandwidth *= 10000000 / interval + 1; 109 bandwidth *= 10000000 / interval + 1;
110 bandwidth /= 1000; 110 bandwidth /= 1000;
111 if (video->dev->udev->speed == USB_SPEED_HIGH) 111 if (stream->dev->udev->speed == USB_SPEED_HIGH)
112 bandwidth /= 8; 112 bandwidth /= 8;
113 bandwidth += 12; 113 bandwidth += 12;
114 114
@@ -116,14 +116,14 @@ static void uvc_fixup_video_ctrl(struct uvc_video_device *video,
116 } 116 }
117} 117}
118 118
119static int uvc_get_video_ctrl(struct uvc_video_device *video, 119static int uvc_get_video_ctrl(struct uvc_streaming *stream,
120 struct uvc_streaming_control *ctrl, int probe, __u8 query) 120 struct uvc_streaming_control *ctrl, int probe, __u8 query)
121{ 121{
122 __u8 *data; 122 __u8 *data;
123 __u16 size; 123 __u16 size;
124 int ret; 124 int ret;
125 125
126 size = video->dev->uvc_version >= 0x0110 ? 34 : 26; 126 size = stream->dev->uvc_version >= 0x0110 ? 34 : 26;
127 data = kmalloc(size, GFP_KERNEL); 127 data = kmalloc(size, GFP_KERNEL);
128 if (data == NULL) 128 if (data == NULL)
129 return -ENOMEM; 129 return -ENOMEM;
@@ -131,7 +131,7 @@ static int uvc_get_video_ctrl(struct uvc_video_device *video,
131 if ((video->dev->quirks & UVC_QUIRK_PROBE_DEF) && query == UVC_GET_DEF) 131 if ((video->dev->quirks & UVC_QUIRK_PROBE_DEF) && query == UVC_GET_DEF)
132 return -EIO; 132 return -EIO;
133 133
134 ret = __uvc_query_ctrl(video->dev, query, 0, video->streaming->intfnum, 134 ret = __uvc_query_ctrl(stream->dev, query, 0, stream->intfnum,
135 probe ? UVC_VS_PROBE_CONTROL : UVC_VS_COMMIT_CONTROL, data, 135 probe ? UVC_VS_PROBE_CONTROL : UVC_VS_COMMIT_CONTROL, data,
136 size, UVC_CTRL_STREAMING_TIMEOUT); 136 size, UVC_CTRL_STREAMING_TIMEOUT);
137 137
@@ -140,7 +140,7 @@ static int uvc_get_video_ctrl(struct uvc_video_device *video,
140 * answer a GET_MIN or GET_MAX request with the wCompQuality 140 * answer a GET_MIN or GET_MAX request with the wCompQuality
141 * field only. 141 * field only.
142 */ 142 */
143 uvc_warn_once(video->dev, UVC_WARN_MINMAX, "UVC non " 143 uvc_warn_once(stream->dev, UVC_WARN_MINMAX, "UVC non "
144 "compliance - GET_MIN/MAX(PROBE) incorrectly " 144 "compliance - GET_MIN/MAX(PROBE) incorrectly "
145 "supported. Enabling workaround.\n"); 145 "supported. Enabling workaround.\n");
146 memset(ctrl, 0, sizeof ctrl); 146 memset(ctrl, 0, sizeof ctrl);
@@ -152,7 +152,7 @@ static int uvc_get_video_ctrl(struct uvc_video_device *video,
152 * video probe control. Warn once and return, the caller will 152 * video probe control. Warn once and return, the caller will
153 * fall back to GET_CUR. 153 * fall back to GET_CUR.
154 */ 154 */
155 uvc_warn_once(video->dev, UVC_WARN_PROBE_DEF, "UVC non " 155 uvc_warn_once(stream->dev, UVC_WARN_PROBE_DEF, "UVC non "
156 "compliance - GET_DEF(PROBE) not supported. " 156 "compliance - GET_DEF(PROBE) not supported. "
157 "Enabling workaround.\n"); 157 "Enabling workaround.\n");
158 ret = -EIO; 158 ret = -EIO;
@@ -184,7 +184,7 @@ static int uvc_get_video_ctrl(struct uvc_video_device *video,
184 ctrl->bMinVersion = data[32]; 184 ctrl->bMinVersion = data[32];
185 ctrl->bMaxVersion = data[33]; 185 ctrl->bMaxVersion = data[33];
186 } else { 186 } else {
187 ctrl->dwClockFrequency = video->dev->clock_frequency; 187 ctrl->dwClockFrequency = stream->dev->clock_frequency;
188 ctrl->bmFramingInfo = 0; 188 ctrl->bmFramingInfo = 0;
189 ctrl->bPreferedVersion = 0; 189 ctrl->bPreferedVersion = 0;
190 ctrl->bMinVersion = 0; 190 ctrl->bMinVersion = 0;
@@ -195,7 +195,7 @@ static int uvc_get_video_ctrl(struct uvc_video_device *video,
195 * dwMaxPayloadTransferSize fields. Try to get the value from the 195 * dwMaxPayloadTransferSize fields. Try to get the value from the
196 * format and frame descriptors. 196 * format and frame descriptors.
197 */ 197 */
198 uvc_fixup_video_ctrl(video, ctrl); 198 uvc_fixup_video_ctrl(stream, ctrl);
199 ret = 0; 199 ret = 0;
200 200
201out: 201out:
@@ -203,14 +203,14 @@ out:
203 return ret; 203 return ret;
204} 204}
205 205
206static int uvc_set_video_ctrl(struct uvc_video_device *video, 206static int uvc_set_video_ctrl(struct uvc_streaming *stream,
207 struct uvc_streaming_control *ctrl, int probe) 207 struct uvc_streaming_control *ctrl, int probe)
208{ 208{
209 __u8 *data; 209 __u8 *data;
210 __u16 size; 210 __u16 size;
211 int ret; 211 int ret;
212 212
213 size = video->dev->uvc_version >= 0x0110 ? 34 : 26; 213 size = stream->dev->uvc_version >= 0x0110 ? 34 : 26;
214 data = kzalloc(size, GFP_KERNEL); 214 data = kzalloc(size, GFP_KERNEL);
215 if (data == NULL) 215 if (data == NULL)
216 return -ENOMEM; 216 return -ENOMEM;
@@ -235,8 +235,7 @@ static int uvc_set_video_ctrl(struct uvc_video_device *video,
235 data[33] = ctrl->bMaxVersion; 235 data[33] = ctrl->bMaxVersion;
236 } 236 }
237 237
238 ret = __uvc_query_ctrl(video->dev, UVC_SET_CUR, 0, 238 ret = __uvc_query_ctrl(stream->dev, UVC_SET_CUR, 0, stream->intfnum,
239 video->streaming->intfnum,
240 probe ? UVC_VS_PROBE_CONTROL : UVC_VS_COMMIT_CONTROL, data, 239 probe ? UVC_VS_PROBE_CONTROL : UVC_VS_COMMIT_CONTROL, data,
241 size, UVC_CTRL_STREAMING_TIMEOUT); 240 size, UVC_CTRL_STREAMING_TIMEOUT);
242 if (ret != size) { 241 if (ret != size) {
@@ -250,7 +249,7 @@ static int uvc_set_video_ctrl(struct uvc_video_device *video,
250 return ret; 249 return ret;
251} 250}
252 251
253int uvc_probe_video(struct uvc_video_device *video, 252int uvc_probe_video(struct uvc_streaming *stream,
254 struct uvc_streaming_control *probe) 253 struct uvc_streaming_control *probe)
255{ 254{
256 struct uvc_streaming_control probe_min, probe_max; 255 struct uvc_streaming_control probe_min, probe_max;
@@ -258,7 +257,7 @@ int uvc_probe_video(struct uvc_video_device *video,
258 unsigned int i; 257 unsigned int i;
259 int ret; 258 int ret;
260 259
261 mutex_lock(&video->streaming->mutex); 260 mutex_lock(&stream->mutex);
262 261
263 /* Perform probing. The device should adjust the requested values 262 /* Perform probing. The device should adjust the requested values
264 * according to its capabilities. However, some devices, namely the 263 * according to its capabilities. However, some devices, namely the
@@ -267,15 +266,16 @@ int uvc_probe_video(struct uvc_video_device *video,
267 * that reason, if the needed bandwidth exceeds the maximum available 266 * that reason, if the needed bandwidth exceeds the maximum available
268 * bandwidth, try to lower the quality. 267 * bandwidth, try to lower the quality.
269 */ 268 */
270 if ((ret = uvc_set_video_ctrl(video, probe, 1)) < 0) 269 ret = uvc_set_video_ctrl(stream, probe, 1);
270 if (ret < 0)
271 goto done; 271 goto done;
272 272
273 /* Get the minimum and maximum values for compression settings. */ 273 /* Get the minimum and maximum values for compression settings. */
274 if (!(video->dev->quirks & UVC_QUIRK_PROBE_MINMAX)) { 274 if (!(stream->dev->quirks & UVC_QUIRK_PROBE_MINMAX)) {
275 ret = uvc_get_video_ctrl(video, &probe_min, 1, UVC_GET_MIN); 275 ret = uvc_get_video_ctrl(stream, &probe_min, 1, UVC_GET_MIN);
276 if (ret < 0) 276 if (ret < 0)
277 goto done; 277 goto done;
278 ret = uvc_get_video_ctrl(video, &probe_max, 1, UVC_GET_MAX); 278 ret = uvc_get_video_ctrl(stream, &probe_max, 1, UVC_GET_MAX);
279 if (ret < 0) 279 if (ret < 0)
280 goto done; 280 goto done;
281 281
@@ -283,21 +283,21 @@ int uvc_probe_video(struct uvc_video_device *video,
283 } 283 }
284 284
285 for (i = 0; i < 2; ++i) { 285 for (i = 0; i < 2; ++i) {
286 ret = uvc_set_video_ctrl(video, probe, 1); 286 ret = uvc_set_video_ctrl(stream, probe, 1);
287 if (ret < 0) 287 if (ret < 0)
288 goto done; 288 goto done;
289 ret = uvc_get_video_ctrl(video, probe, 1, UVC_GET_CUR); 289 ret = uvc_get_video_ctrl(stream, probe, 1, UVC_GET_CUR);
290 if (ret < 0) 290 if (ret < 0)
291 goto done; 291 goto done;
292 292
293 if (video->streaming->intf->num_altsetting == 1) 293 if (stream->intf->num_altsetting == 1)
294 break; 294 break;
295 295
296 bandwidth = probe->dwMaxPayloadTransferSize; 296 bandwidth = probe->dwMaxPayloadTransferSize;
297 if (bandwidth <= video->streaming->maxpsize) 297 if (bandwidth <= stream->maxpsize)
298 break; 298 break;
299 299
300 if (video->dev->quirks & UVC_QUIRK_PROBE_MINMAX) { 300 if (stream->dev->quirks & UVC_QUIRK_PROBE_MINMAX) {
301 ret = -ENOSPC; 301 ret = -ENOSPC;
302 goto done; 302 goto done;
303 } 303 }
@@ -310,14 +310,14 @@ int uvc_probe_video(struct uvc_video_device *video,
310 } 310 }
311 311
312done: 312done:
313 mutex_unlock(&video->streaming->mutex); 313 mutex_unlock(&stream->mutex);
314 return ret; 314 return ret;
315} 315}
316 316
317int uvc_commit_video(struct uvc_video_device *video, 317int uvc_commit_video(struct uvc_streaming *stream,
318 struct uvc_streaming_control *probe) 318 struct uvc_streaming_control *probe)
319{ 319{
320 return uvc_set_video_ctrl(video, probe, 0); 320 return uvc_set_video_ctrl(stream, probe, 0);
321} 321}
322 322
323/* ------------------------------------------------------------------------ 323/* ------------------------------------------------------------------------
@@ -369,7 +369,7 @@ int uvc_commit_video(struct uvc_video_device *video,
369 * to be called with a NULL buf parameter. uvc_video_decode_data and 369 * to be called with a NULL buf parameter. uvc_video_decode_data and
370 * uvc_video_decode_end will never be called with a NULL buffer. 370 * uvc_video_decode_end will never be called with a NULL buffer.
371 */ 371 */
372static int uvc_video_decode_start(struct uvc_video_device *video, 372static int uvc_video_decode_start(struct uvc_streaming *stream,
373 struct uvc_buffer *buf, const __u8 *data, int len) 373 struct uvc_buffer *buf, const __u8 *data, int len)
374{ 374{
375 __u8 fid; 375 __u8 fid;
@@ -395,25 +395,25 @@ static int uvc_video_decode_start(struct uvc_video_device *video,
395 * NULL. 395 * NULL.
396 */ 396 */
397 if (buf == NULL) { 397 if (buf == NULL) {
398 video->last_fid = fid; 398 stream->last_fid = fid;
399 return -ENODATA; 399 return -ENODATA;
400 } 400 }
401 401
402 /* Synchronize to the input stream by waiting for the FID bit to be 402 /* Synchronize to the input stream by waiting for the FID bit to be
403 * toggled when the the buffer state is not UVC_BUF_STATE_ACTIVE. 403 * toggled when the the buffer state is not UVC_BUF_STATE_ACTIVE.
404 * video->last_fid is initialized to -1, so the first isochronous 404 * stream->last_fid is initialized to -1, so the first isochronous
405 * frame will always be in sync. 405 * frame will always be in sync.
406 * 406 *
407 * If the device doesn't toggle the FID bit, invert video->last_fid 407 * If the device doesn't toggle the FID bit, invert stream->last_fid
408 * when the EOF bit is set to force synchronisation on the next packet. 408 * when the EOF bit is set to force synchronisation on the next packet.
409 */ 409 */
410 if (buf->state != UVC_BUF_STATE_ACTIVE) { 410 if (buf->state != UVC_BUF_STATE_ACTIVE) {
411 if (fid == video->last_fid) { 411 if (fid == stream->last_fid) {
412 uvc_trace(UVC_TRACE_FRAME, "Dropping payload (out of " 412 uvc_trace(UVC_TRACE_FRAME, "Dropping payload (out of "
413 "sync).\n"); 413 "sync).\n");
414 if ((video->dev->quirks & UVC_QUIRK_STREAM_NO_FID) && 414 if ((stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID) &&
415 (data[1] & UVC_STREAM_EOF)) 415 (data[1] & UVC_STREAM_EOF))
416 video->last_fid ^= UVC_STREAM_FID; 416 stream->last_fid ^= UVC_STREAM_FID;
417 return -ENODATA; 417 return -ENODATA;
418 } 418 }
419 419
@@ -428,7 +428,7 @@ static int uvc_video_decode_start(struct uvc_video_device *video,
428 * last payload can be lost anyway). We thus must check if the FID has 428 * last payload can be lost anyway). We thus must check if the FID has
429 * been toggled. 429 * been toggled.
430 * 430 *
431 * video->last_fid is initialized to -1, so the first isochronous 431 * stream->last_fid is initialized to -1, so the first isochronous
432 * frame will never trigger an end of frame detection. 432 * frame will never trigger an end of frame detection.
433 * 433 *
434 * Empty buffers (bytesused == 0) don't trigger end of frame detection 434 * Empty buffers (bytesused == 0) don't trigger end of frame detection
@@ -436,22 +436,22 @@ static int uvc_video_decode_start(struct uvc_video_device *video,
436 * avoids detecting end of frame conditions at FID toggling if the 436 * avoids detecting end of frame conditions at FID toggling if the
437 * previous payload had the EOF bit set. 437 * previous payload had the EOF bit set.
438 */ 438 */
439 if (fid != video->last_fid && buf->buf.bytesused != 0) { 439 if (fid != stream->last_fid && buf->buf.bytesused != 0) {
440 uvc_trace(UVC_TRACE_FRAME, "Frame complete (FID bit " 440 uvc_trace(UVC_TRACE_FRAME, "Frame complete (FID bit "
441 "toggled).\n"); 441 "toggled).\n");
442 buf->state = UVC_BUF_STATE_DONE; 442 buf->state = UVC_BUF_STATE_DONE;
443 return -EAGAIN; 443 return -EAGAIN;
444 } 444 }
445 445
446 video->last_fid = fid; 446 stream->last_fid = fid;
447 447
448 return data[0]; 448 return data[0];
449} 449}
450 450
451static void uvc_video_decode_data(struct uvc_video_device *video, 451static void uvc_video_decode_data(struct uvc_streaming *stream,
452 struct uvc_buffer *buf, const __u8 *data, int len) 452 struct uvc_buffer *buf, const __u8 *data, int len)
453{ 453{
454 struct uvc_video_queue *queue = &video->queue; 454 struct uvc_video_queue *queue = &stream->queue;
455 unsigned int maxlen, nbytes; 455 unsigned int maxlen, nbytes;
456 void *mem; 456 void *mem;
457 457
@@ -472,7 +472,7 @@ static void uvc_video_decode_data(struct uvc_video_device *video,
472 } 472 }
473} 473}
474 474
475static void uvc_video_decode_end(struct uvc_video_device *video, 475static void uvc_video_decode_end(struct uvc_streaming *stream,
476 struct uvc_buffer *buf, const __u8 *data, int len) 476 struct uvc_buffer *buf, const __u8 *data, int len)
477{ 477{
478 /* Mark the buffer as done if the EOF marker is set. */ 478 /* Mark the buffer as done if the EOF marker is set. */
@@ -481,8 +481,8 @@ static void uvc_video_decode_end(struct uvc_video_device *video,
481 if (data[0] == len) 481 if (data[0] == len)
482 uvc_trace(UVC_TRACE_FRAME, "EOF in empty payload.\n"); 482 uvc_trace(UVC_TRACE_FRAME, "EOF in empty payload.\n");
483 buf->state = UVC_BUF_STATE_DONE; 483 buf->state = UVC_BUF_STATE_DONE;
484 if (video->dev->quirks & UVC_QUIRK_STREAM_NO_FID) 484 if (stream->dev->quirks & UVC_QUIRK_STREAM_NO_FID)
485 video->last_fid ^= UVC_STREAM_FID; 485 stream->last_fid ^= UVC_STREAM_FID;
486 } 486 }
487} 487}
488 488
@@ -497,26 +497,26 @@ static void uvc_video_decode_end(struct uvc_video_device *video,
497 * uvc_video_encode_data is called for every URB and copies the data from the 497 * uvc_video_encode_data is called for every URB and copies the data from the
498 * video buffer to the transfer buffer. 498 * video buffer to the transfer buffer.
499 */ 499 */
500static int uvc_video_encode_header(struct uvc_video_device *video, 500static int uvc_video_encode_header(struct uvc_streaming *stream,
501 struct uvc_buffer *buf, __u8 *data, int len) 501 struct uvc_buffer *buf, __u8 *data, int len)
502{ 502{
503 data[0] = 2; /* Header length */ 503 data[0] = 2; /* Header length */
504 data[1] = UVC_STREAM_EOH | UVC_STREAM_EOF 504 data[1] = UVC_STREAM_EOH | UVC_STREAM_EOF
505 | (video->last_fid & UVC_STREAM_FID); 505 | (stream->last_fid & UVC_STREAM_FID);
506 return 2; 506 return 2;
507} 507}
508 508
509static int uvc_video_encode_data(struct uvc_video_device *video, 509static int uvc_video_encode_data(struct uvc_streaming *stream,
510 struct uvc_buffer *buf, __u8 *data, int len) 510 struct uvc_buffer *buf, __u8 *data, int len)
511{ 511{
512 struct uvc_video_queue *queue = &video->queue; 512 struct uvc_video_queue *queue = &stream->queue;
513 unsigned int nbytes; 513 unsigned int nbytes;
514 void *mem; 514 void *mem;
515 515
516 /* Copy video data to the URB buffer. */ 516 /* Copy video data to the URB buffer. */
517 mem = queue->mem + buf->buf.m.offset + queue->buf_used; 517 mem = queue->mem + buf->buf.m.offset + queue->buf_used;
518 nbytes = min((unsigned int)len, buf->buf.bytesused - queue->buf_used); 518 nbytes = min((unsigned int)len, buf->buf.bytesused - queue->buf_used);
519 nbytes = min(video->bulk.max_payload_size - video->bulk.payload_size, 519 nbytes = min(stream->bulk.max_payload_size - stream->bulk.payload_size,
520 nbytes); 520 nbytes);
521 memcpy(data, mem, nbytes); 521 memcpy(data, mem, nbytes);
522 522
@@ -532,8 +532,8 @@ static int uvc_video_encode_data(struct uvc_video_device *video,
532/* 532/*
533 * Completion handler for video URBs. 533 * Completion handler for video URBs.
534 */ 534 */
535static void uvc_video_decode_isoc(struct urb *urb, 535static void uvc_video_decode_isoc(struct urb *urb, struct uvc_streaming *stream,
536 struct uvc_video_device *video, struct uvc_buffer *buf) 536 struct uvc_buffer *buf)
537{ 537{
538 u8 *mem; 538 u8 *mem;
539 int ret, i; 539 int ret, i;
@@ -548,31 +548,32 @@ static void uvc_video_decode_isoc(struct urb *urb,
548 /* Decode the payload header. */ 548 /* Decode the payload header. */
549 mem = urb->transfer_buffer + urb->iso_frame_desc[i].offset; 549 mem = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
550 do { 550 do {
551 ret = uvc_video_decode_start(video, buf, mem, 551 ret = uvc_video_decode_start(stream, buf, mem,
552 urb->iso_frame_desc[i].actual_length); 552 urb->iso_frame_desc[i].actual_length);
553 if (ret == -EAGAIN) 553 if (ret == -EAGAIN)
554 buf = uvc_queue_next_buffer(&video->queue, buf); 554 buf = uvc_queue_next_buffer(&stream->queue,
555 buf);
555 } while (ret == -EAGAIN); 556 } while (ret == -EAGAIN);
556 557
557 if (ret < 0) 558 if (ret < 0)
558 continue; 559 continue;
559 560
560 /* Decode the payload data. */ 561 /* Decode the payload data. */
561 uvc_video_decode_data(video, buf, mem + ret, 562 uvc_video_decode_data(stream, buf, mem + ret,
562 urb->iso_frame_desc[i].actual_length - ret); 563 urb->iso_frame_desc[i].actual_length - ret);
563 564
564 /* Process the header again. */ 565 /* Process the header again. */
565 uvc_video_decode_end(video, buf, mem, 566 uvc_video_decode_end(stream, buf, mem,
566 urb->iso_frame_desc[i].actual_length); 567 urb->iso_frame_desc[i].actual_length);
567 568
568 if (buf->state == UVC_BUF_STATE_DONE || 569 if (buf->state == UVC_BUF_STATE_DONE ||
569 buf->state == UVC_BUF_STATE_ERROR) 570 buf->state == UVC_BUF_STATE_ERROR)
570 buf = uvc_queue_next_buffer(&video->queue, buf); 571 buf = uvc_queue_next_buffer(&stream->queue, buf);
571 } 572 }
572} 573}
573 574
574static void uvc_video_decode_bulk(struct urb *urb, 575static void uvc_video_decode_bulk(struct urb *urb, struct uvc_streaming *stream,
575 struct uvc_video_device *video, struct uvc_buffer *buf) 576 struct uvc_buffer *buf)
576{ 577{
577 u8 *mem; 578 u8 *mem;
578 int len, ret; 579 int len, ret;
@@ -582,24 +583,25 @@ static void uvc_video_decode_bulk(struct urb *urb,
582 583
583 mem = urb->transfer_buffer; 584 mem = urb->transfer_buffer;
584 len = urb->actual_length; 585 len = urb->actual_length;
585 video->bulk.payload_size += len; 586 stream->bulk.payload_size += len;
586 587
587 /* If the URB is the first of its payload, decode and save the 588 /* If the URB is the first of its payload, decode and save the
588 * header. 589 * header.
589 */ 590 */
590 if (video->bulk.header_size == 0 && !video->bulk.skip_payload) { 591 if (stream->bulk.header_size == 0 && !stream->bulk.skip_payload) {
591 do { 592 do {
592 ret = uvc_video_decode_start(video, buf, mem, len); 593 ret = uvc_video_decode_start(stream, buf, mem, len);
593 if (ret == -EAGAIN) 594 if (ret == -EAGAIN)
594 buf = uvc_queue_next_buffer(&video->queue, buf); 595 buf = uvc_queue_next_buffer(&stream->queue,
596 buf);
595 } while (ret == -EAGAIN); 597 } while (ret == -EAGAIN);
596 598
597 /* If an error occured skip the rest of the payload. */ 599 /* If an error occured skip the rest of the payload. */
598 if (ret < 0 || buf == NULL) { 600 if (ret < 0 || buf == NULL) {
599 video->bulk.skip_payload = 1; 601 stream->bulk.skip_payload = 1;
600 } else { 602 } else {
601 memcpy(video->bulk.header, mem, ret); 603 memcpy(stream->bulk.header, mem, ret);
602 video->bulk.header_size = ret; 604 stream->bulk.header_size = ret;
603 605
604 mem += ret; 606 mem += ret;
605 len -= ret; 607 len -= ret;
@@ -612,33 +614,34 @@ static void uvc_video_decode_bulk(struct urb *urb,
612 */ 614 */
613 615
614 /* Process video data. */ 616 /* Process video data. */
615 if (!video->bulk.skip_payload && buf != NULL) 617 if (!stream->bulk.skip_payload && buf != NULL)
616 uvc_video_decode_data(video, buf, mem, len); 618 uvc_video_decode_data(stream, buf, mem, len);
617 619
618 /* Detect the payload end by a URB smaller than the maximum size (or 620 /* Detect the payload end by a URB smaller than the maximum size (or
619 * a payload size equal to the maximum) and process the header again. 621 * a payload size equal to the maximum) and process the header again.
620 */ 622 */
621 if (urb->actual_length < urb->transfer_buffer_length || 623 if (urb->actual_length < urb->transfer_buffer_length ||
622 video->bulk.payload_size >= video->bulk.max_payload_size) { 624 stream->bulk.payload_size >= stream->bulk.max_payload_size) {
623 if (!video->bulk.skip_payload && buf != NULL) { 625 if (!stream->bulk.skip_payload && buf != NULL) {
624 uvc_video_decode_end(video, buf, video->bulk.header, 626 uvc_video_decode_end(stream, buf, stream->bulk.header,
625 video->bulk.payload_size); 627 stream->bulk.payload_size);
626 if (buf->state == UVC_BUF_STATE_DONE || 628 if (buf->state == UVC_BUF_STATE_DONE ||
627 buf->state == UVC_BUF_STATE_ERROR) 629 buf->state == UVC_BUF_STATE_ERROR)
628 buf = uvc_queue_next_buffer(&video->queue, buf); 630 buf = uvc_queue_next_buffer(&stream->queue,
631 buf);
629 } 632 }
630 633
631 video->bulk.header_size = 0; 634 stream->bulk.header_size = 0;
632 video->bulk.skip_payload = 0; 635 stream->bulk.skip_payload = 0;
633 video->bulk.payload_size = 0; 636 stream->bulk.payload_size = 0;
634 } 637 }
635} 638}
636 639
637static void uvc_video_encode_bulk(struct urb *urb, 640static void uvc_video_encode_bulk(struct urb *urb, struct uvc_streaming *stream,
638 struct uvc_video_device *video, struct uvc_buffer *buf) 641 struct uvc_buffer *buf)
639{ 642{
640 u8 *mem = urb->transfer_buffer; 643 u8 *mem = urb->transfer_buffer;
641 int len = video->urb_size, ret; 644 int len = stream->urb_size, ret;
642 645
643 if (buf == NULL) { 646 if (buf == NULL) {
644 urb->transfer_buffer_length = 0; 647 urb->transfer_buffer_length = 0;
@@ -646,40 +649,40 @@ static void uvc_video_encode_bulk(struct urb *urb,
646 } 649 }
647 650
648 /* If the URB is the first of its payload, add the header. */ 651 /* If the URB is the first of its payload, add the header. */
649 if (video->bulk.header_size == 0) { 652 if (stream->bulk.header_size == 0) {
650 ret = uvc_video_encode_header(video, buf, mem, len); 653 ret = uvc_video_encode_header(stream, buf, mem, len);
651 video->bulk.header_size = ret; 654 stream->bulk.header_size = ret;
652 video->bulk.payload_size += ret; 655 stream->bulk.payload_size += ret;
653 mem += ret; 656 mem += ret;
654 len -= ret; 657 len -= ret;
655 } 658 }
656 659
657 /* Process video data. */ 660 /* Process video data. */
658 ret = uvc_video_encode_data(video, buf, mem, len); 661 ret = uvc_video_encode_data(stream, buf, mem, len);
659 662
660 video->bulk.payload_size += ret; 663 stream->bulk.payload_size += ret;
661 len -= ret; 664 len -= ret;
662 665
663 if (buf->buf.bytesused == video->queue.buf_used || 666 if (buf->buf.bytesused == stream->queue.buf_used ||
664 video->bulk.payload_size == video->bulk.max_payload_size) { 667 stream->bulk.payload_size == stream->bulk.max_payload_size) {
665 if (buf->buf.bytesused == video->queue.buf_used) { 668 if (buf->buf.bytesused == stream->queue.buf_used) {
666 video->queue.buf_used = 0; 669 stream->queue.buf_used = 0;
667 buf->state = UVC_BUF_STATE_DONE; 670 buf->state = UVC_BUF_STATE_DONE;
668 uvc_queue_next_buffer(&video->queue, buf); 671 uvc_queue_next_buffer(&stream->queue, buf);
669 video->last_fid ^= UVC_STREAM_FID; 672 stream->last_fid ^= UVC_STREAM_FID;
670 } 673 }
671 674
672 video->bulk.header_size = 0; 675 stream->bulk.header_size = 0;
673 video->bulk.payload_size = 0; 676 stream->bulk.payload_size = 0;
674 } 677 }
675 678
676 urb->transfer_buffer_length = video->urb_size - len; 679 urb->transfer_buffer_length = stream->urb_size - len;
677} 680}
678 681
679static void uvc_video_complete(struct urb *urb) 682static void uvc_video_complete(struct urb *urb)
680{ 683{
681 struct uvc_video_device *video = urb->context; 684 struct uvc_streaming *stream = urb->context;
682 struct uvc_video_queue *queue = &video->queue; 685 struct uvc_video_queue *queue = &stream->queue;
683 struct uvc_buffer *buf = NULL; 686 struct uvc_buffer *buf = NULL;
684 unsigned long flags; 687 unsigned long flags;
685 int ret; 688 int ret;
@@ -693,7 +696,7 @@ static void uvc_video_complete(struct urb *urb)
693 "completion handler.\n", urb->status); 696 "completion handler.\n", urb->status);
694 697
695 case -ENOENT: /* usb_kill_urb() called. */ 698 case -ENOENT: /* usb_kill_urb() called. */
696 if (video->frozen) 699 if (stream->frozen)
697 return; 700 return;
698 701
699 case -ECONNRESET: /* usb_unlink_urb() called. */ 702 case -ECONNRESET: /* usb_unlink_urb() called. */
@@ -708,7 +711,7 @@ static void uvc_video_complete(struct urb *urb)
708 queue); 711 queue);
709 spin_unlock_irqrestore(&queue->irqlock, flags); 712 spin_unlock_irqrestore(&queue->irqlock, flags);
710 713
711 video->decode(urb, video, buf); 714 stream->decode(urb, stream, buf);
712 715
713 if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) < 0) { 716 if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
714 uvc_printk(KERN_ERR, "Failed to resubmit video URB (%d).\n", 717 uvc_printk(KERN_ERR, "Failed to resubmit video URB (%d).\n",
@@ -719,19 +722,19 @@ static void uvc_video_complete(struct urb *urb)
719/* 722/*
720 * Free transfer buffers. 723 * Free transfer buffers.
721 */ 724 */
722static void uvc_free_urb_buffers(struct uvc_video_device *video) 725static void uvc_free_urb_buffers(struct uvc_streaming *stream)
723{ 726{
724 unsigned int i; 727 unsigned int i;
725 728
726 for (i = 0; i < UVC_URBS; ++i) { 729 for (i = 0; i < UVC_URBS; ++i) {
727 if (video->urb_buffer[i]) { 730 if (stream->urb_buffer[i]) {
728 usb_buffer_free(video->dev->udev, video->urb_size, 731 usb_buffer_free(stream->dev->udev, stream->urb_size,
729 video->urb_buffer[i], video->urb_dma[i]); 732 stream->urb_buffer[i], stream->urb_dma[i]);
730 video->urb_buffer[i] = NULL; 733 stream->urb_buffer[i] = NULL;
731 } 734 }
732 } 735 }
733 736
734 video->urb_size = 0; 737 stream->urb_size = 0;
735} 738}
736 739
737/* 740/*
@@ -745,15 +748,15 @@ static void uvc_free_urb_buffers(struct uvc_video_device *video)
745 * 748 *
746 * Return the number of allocated packets on success or 0 when out of memory. 749 * Return the number of allocated packets on success or 0 when out of memory.
747 */ 750 */
748static int uvc_alloc_urb_buffers(struct uvc_video_device *video, 751static int uvc_alloc_urb_buffers(struct uvc_streaming *stream,
749 unsigned int size, unsigned int psize, gfp_t gfp_flags) 752 unsigned int size, unsigned int psize, gfp_t gfp_flags)
750{ 753{
751 unsigned int npackets; 754 unsigned int npackets;
752 unsigned int i; 755 unsigned int i;
753 756
754 /* Buffers are already allocated, bail out. */ 757 /* Buffers are already allocated, bail out. */
755 if (video->urb_size) 758 if (stream->urb_size)
756 return video->urb_size / psize; 759 return stream->urb_size / psize;
757 760
758 /* Compute the number of packets. Bulk endpoints might transfer UVC 761 /* Compute the number of packets. Bulk endpoints might transfer UVC
759 * payloads accross multiple URBs. 762 * payloads accross multiple URBs.
@@ -765,17 +768,17 @@ static int uvc_alloc_urb_buffers(struct uvc_video_device *video,
765 /* Retry allocations until one succeed. */ 768 /* Retry allocations until one succeed. */
766 for (; npackets > 1; npackets /= 2) { 769 for (; npackets > 1; npackets /= 2) {
767 for (i = 0; i < UVC_URBS; ++i) { 770 for (i = 0; i < UVC_URBS; ++i) {
768 video->urb_buffer[i] = usb_buffer_alloc( 771 stream->urb_buffer[i] = usb_buffer_alloc(
769 video->dev->udev, psize * npackets, 772 stream->dev->udev, psize * npackets,
770 gfp_flags | __GFP_NOWARN, &video->urb_dma[i]); 773 gfp_flags | __GFP_NOWARN, &stream->urb_dma[i]);
771 if (!video->urb_buffer[i]) { 774 if (!stream->urb_buffer[i]) {
772 uvc_free_urb_buffers(video); 775 uvc_free_urb_buffers(stream);
773 break; 776 break;
774 } 777 }
775 } 778 }
776 779
777 if (i == UVC_URBS) { 780 if (i == UVC_URBS) {
778 video->urb_size = psize * npackets; 781 stream->urb_size = psize * npackets;
779 return npackets; 782 return npackets;
780 } 783 }
781 } 784 }
@@ -786,29 +789,30 @@ static int uvc_alloc_urb_buffers(struct uvc_video_device *video,
786/* 789/*
787 * Uninitialize isochronous/bulk URBs and free transfer buffers. 790 * Uninitialize isochronous/bulk URBs and free transfer buffers.
788 */ 791 */
789static void uvc_uninit_video(struct uvc_video_device *video, int free_buffers) 792static void uvc_uninit_video(struct uvc_streaming *stream, int free_buffers)
790{ 793{
791 struct urb *urb; 794 struct urb *urb;
792 unsigned int i; 795 unsigned int i;
793 796
794 for (i = 0; i < UVC_URBS; ++i) { 797 for (i = 0; i < UVC_URBS; ++i) {
795 if ((urb = video->urb[i]) == NULL) 798 urb = stream->urb[i];
799 if (urb == NULL)
796 continue; 800 continue;
797 801
798 usb_kill_urb(urb); 802 usb_kill_urb(urb);
799 usb_free_urb(urb); 803 usb_free_urb(urb);
800 video->urb[i] = NULL; 804 stream->urb[i] = NULL;
801 } 805 }
802 806
803 if (free_buffers) 807 if (free_buffers)
804 uvc_free_urb_buffers(video); 808 uvc_free_urb_buffers(stream);
805} 809}
806 810
807/* 811/*
808 * Initialize isochronous URBs and allocate transfer buffers. The packet size 812 * Initialize isochronous URBs and allocate transfer buffers. The packet size
809 * is given by the endpoint. 813 * is given by the endpoint.
810 */ 814 */
811static int uvc_init_video_isoc(struct uvc_video_device *video, 815static int uvc_init_video_isoc(struct uvc_streaming *stream,
812 struct usb_host_endpoint *ep, gfp_t gfp_flags) 816 struct usb_host_endpoint *ep, gfp_t gfp_flags)
813{ 817{
814 struct urb *urb; 818 struct urb *urb;
@@ -818,9 +822,9 @@ static int uvc_init_video_isoc(struct uvc_video_device *video,
818 822
819 psize = le16_to_cpu(ep->desc.wMaxPacketSize); 823 psize = le16_to_cpu(ep->desc.wMaxPacketSize);
820 psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); 824 psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
821 size = video->streaming->ctrl.dwMaxVideoFrameSize; 825 size = stream->ctrl.dwMaxVideoFrameSize;
822 826
823 npackets = uvc_alloc_urb_buffers(video, size, psize, gfp_flags); 827 npackets = uvc_alloc_urb_buffers(stream, size, psize, gfp_flags);
824 if (npackets == 0) 828 if (npackets == 0)
825 return -ENOMEM; 829 return -ENOMEM;
826 830
@@ -829,18 +833,18 @@ static int uvc_init_video_isoc(struct uvc_video_device *video,
829 for (i = 0; i < UVC_URBS; ++i) { 833 for (i = 0; i < UVC_URBS; ++i) {
830 urb = usb_alloc_urb(npackets, gfp_flags); 834 urb = usb_alloc_urb(npackets, gfp_flags);
831 if (urb == NULL) { 835 if (urb == NULL) {
832 uvc_uninit_video(video, 1); 836 uvc_uninit_video(stream, 1);
833 return -ENOMEM; 837 return -ENOMEM;
834 } 838 }
835 839
836 urb->dev = video->dev->udev; 840 urb->dev = stream->dev->udev;
837 urb->context = video; 841 urb->context = stream;
838 urb->pipe = usb_rcvisocpipe(video->dev->udev, 842 urb->pipe = usb_rcvisocpipe(stream->dev->udev,
839 ep->desc.bEndpointAddress); 843 ep->desc.bEndpointAddress);
840 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; 844 urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
841 urb->interval = ep->desc.bInterval; 845 urb->interval = ep->desc.bInterval;
842 urb->transfer_buffer = video->urb_buffer[i]; 846 urb->transfer_buffer = stream->urb_buffer[i];
843 urb->transfer_dma = video->urb_dma[i]; 847 urb->transfer_dma = stream->urb_dma[i];
844 urb->complete = uvc_video_complete; 848 urb->complete = uvc_video_complete;
845 urb->number_of_packets = npackets; 849 urb->number_of_packets = npackets;
846 urb->transfer_buffer_length = size; 850 urb->transfer_buffer_length = size;
@@ -850,7 +854,7 @@ static int uvc_init_video_isoc(struct uvc_video_device *video,
850 urb->iso_frame_desc[j].length = psize; 854 urb->iso_frame_desc[j].length = psize;
851 } 855 }
852 856
853 video->urb[i] = urb; 857 stream->urb[i] = urb;
854 } 858 }
855 859
856 return 0; 860 return 0;
@@ -860,7 +864,7 @@ static int uvc_init_video_isoc(struct uvc_video_device *video,
860 * Initialize bulk URBs and allocate transfer buffers. The packet size is 864 * Initialize bulk URBs and allocate transfer buffers. The packet size is
861 * given by the endpoint. 865 * given by the endpoint.
862 */ 866 */
863static int uvc_init_video_bulk(struct uvc_video_device *video, 867static int uvc_init_video_bulk(struct uvc_streaming *stream,
864 struct usb_host_endpoint *ep, gfp_t gfp_flags) 868 struct usb_host_endpoint *ep, gfp_t gfp_flags)
865{ 869{
866 struct urb *urb; 870 struct urb *urb;
@@ -869,39 +873,39 @@ static int uvc_init_video_bulk(struct uvc_video_device *video,
869 u32 size; 873 u32 size;
870 874
871 psize = le16_to_cpu(ep->desc.wMaxPacketSize) & 0x07ff; 875 psize = le16_to_cpu(ep->desc.wMaxPacketSize) & 0x07ff;
872 size = video->streaming->ctrl.dwMaxPayloadTransferSize; 876 size = stream->ctrl.dwMaxPayloadTransferSize;
873 video->bulk.max_payload_size = size; 877 stream->bulk.max_payload_size = size;
874 878
875 npackets = uvc_alloc_urb_buffers(video, size, psize, gfp_flags); 879 npackets = uvc_alloc_urb_buffers(stream, size, psize, gfp_flags);
876 if (npackets == 0) 880 if (npackets == 0)
877 return -ENOMEM; 881 return -ENOMEM;
878 882
879 size = npackets * psize; 883 size = npackets * psize;
880 884
881 if (usb_endpoint_dir_in(&ep->desc)) 885 if (usb_endpoint_dir_in(&ep->desc))
882 pipe = usb_rcvbulkpipe(video->dev->udev, 886 pipe = usb_rcvbulkpipe(stream->dev->udev,
883 ep->desc.bEndpointAddress); 887 ep->desc.bEndpointAddress);
884 else 888 else
885 pipe = usb_sndbulkpipe(video->dev->udev, 889 pipe = usb_sndbulkpipe(stream->dev->udev,
886 ep->desc.bEndpointAddress); 890 ep->desc.bEndpointAddress);
887 891
888 if (video->streaming->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) 892 if (stream->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
889 size = 0; 893 size = 0;
890 894
891 for (i = 0; i < UVC_URBS; ++i) { 895 for (i = 0; i < UVC_URBS; ++i) {
892 urb = usb_alloc_urb(0, gfp_flags); 896 urb = usb_alloc_urb(0, gfp_flags);
893 if (urb == NULL) { 897 if (urb == NULL) {
894 uvc_uninit_video(video, 1); 898 uvc_uninit_video(stream, 1);
895 return -ENOMEM; 899 return -ENOMEM;
896 } 900 }
897 901
898 usb_fill_bulk_urb(urb, video->dev->udev, pipe, 902 usb_fill_bulk_urb(urb, stream->dev->udev, pipe,
899 video->urb_buffer[i], size, uvc_video_complete, 903 stream->urb_buffer[i], size, uvc_video_complete,
900 video); 904 stream);
901 urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; 905 urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
902 urb->transfer_dma = video->urb_dma[i]; 906 urb->transfer_dma = stream->urb_dma[i];
903 907
904 video->urb[i] = urb; 908 stream->urb[i] = urb;
905 } 909 }
906 910
907 return 0; 911 return 0;
@@ -910,35 +914,35 @@ static int uvc_init_video_bulk(struct uvc_video_device *video,
910/* 914/*
911 * Initialize isochronous/bulk URBs and allocate transfer buffers. 915 * Initialize isochronous/bulk URBs and allocate transfer buffers.
912 */ 916 */
913static int uvc_init_video(struct uvc_video_device *video, gfp_t gfp_flags) 917static int uvc_init_video(struct uvc_streaming *stream, gfp_t gfp_flags)
914{ 918{
915 struct usb_interface *intf = video->streaming->intf; 919 struct usb_interface *intf = stream->intf;
916 struct usb_host_interface *alts; 920 struct usb_host_interface *alts;
917 struct usb_host_endpoint *ep = NULL; 921 struct usb_host_endpoint *ep = NULL;
918 int intfnum = video->streaming->intfnum; 922 int intfnum = stream->intfnum;
919 unsigned int bandwidth, psize, i; 923 unsigned int bandwidth, psize, i;
920 int ret; 924 int ret;
921 925
922 video->last_fid = -1; 926 stream->last_fid = -1;
923 video->bulk.header_size = 0; 927 stream->bulk.header_size = 0;
924 video->bulk.skip_payload = 0; 928 stream->bulk.skip_payload = 0;
925 video->bulk.payload_size = 0; 929 stream->bulk.payload_size = 0;
926 930
927 if (intf->num_altsetting > 1) { 931 if (intf->num_altsetting > 1) {
928 /* Isochronous endpoint, select the alternate setting. */ 932 /* Isochronous endpoint, select the alternate setting. */
929 bandwidth = video->streaming->ctrl.dwMaxPayloadTransferSize; 933 bandwidth = stream->ctrl.dwMaxPayloadTransferSize;
930 934
931 if (bandwidth == 0) { 935 if (bandwidth == 0) {
932 uvc_printk(KERN_WARNING, "device %s requested null " 936 uvc_printk(KERN_WARNING, "device %s requested null "
933 "bandwidth, defaulting to lowest.\n", 937 "bandwidth, defaulting to lowest.\n",
934 video->vdev->name); 938 stream->dev->name);
935 bandwidth = 1; 939 bandwidth = 1;
936 } 940 }
937 941
938 for (i = 0; i < intf->num_altsetting; ++i) { 942 for (i = 0; i < intf->num_altsetting; ++i) {
939 alts = &intf->altsetting[i]; 943 alts = &intf->altsetting[i];
940 ep = uvc_find_endpoint(alts, 944 ep = uvc_find_endpoint(alts,
941 video->streaming->header.bEndpointAddress); 945 stream->header.bEndpointAddress);
942 if (ep == NULL) 946 if (ep == NULL)
943 continue; 947 continue;
944 948
@@ -952,18 +956,19 @@ static int uvc_init_video(struct uvc_video_device *video, gfp_t gfp_flags)
952 if (i >= intf->num_altsetting) 956 if (i >= intf->num_altsetting)
953 return -EIO; 957 return -EIO;
954 958
955 if ((ret = usb_set_interface(video->dev->udev, intfnum, i)) < 0) 959 ret = usb_set_interface(stream->dev->udev, intfnum, i);
960 if (ret < 0)
956 return ret; 961 return ret;
957 962
958 ret = uvc_init_video_isoc(video, ep, gfp_flags); 963 ret = uvc_init_video_isoc(stream, ep, gfp_flags);
959 } else { 964 } else {
960 /* Bulk endpoint, proceed to URB initialization. */ 965 /* Bulk endpoint, proceed to URB initialization. */
961 ep = uvc_find_endpoint(&intf->altsetting[0], 966 ep = uvc_find_endpoint(&intf->altsetting[0],
962 video->streaming->header.bEndpointAddress); 967 stream->header.bEndpointAddress);
963 if (ep == NULL) 968 if (ep == NULL)
964 return -EIO; 969 return -EIO;
965 970
966 ret = uvc_init_video_bulk(video, ep, gfp_flags); 971 ret = uvc_init_video_bulk(stream, ep, gfp_flags);
967 } 972 }
968 973
969 if (ret < 0) 974 if (ret < 0)
@@ -971,10 +976,11 @@ static int uvc_init_video(struct uvc_video_device *video, gfp_t gfp_flags)
971 976
972 /* Submit the URBs. */ 977 /* Submit the URBs. */
973 for (i = 0; i < UVC_URBS; ++i) { 978 for (i = 0; i < UVC_URBS; ++i) {
974 if ((ret = usb_submit_urb(video->urb[i], gfp_flags)) < 0) { 979 ret = usb_submit_urb(stream->urb[i], gfp_flags);
980 if (ret < 0) {
975 uvc_printk(KERN_ERR, "Failed to submit URB %u " 981 uvc_printk(KERN_ERR, "Failed to submit URB %u "
976 "(%d).\n", i, ret); 982 "(%d).\n", i, ret);
977 uvc_uninit_video(video, 1); 983 uvc_uninit_video(stream, 1);
978 return ret; 984 return ret;
979 } 985 }
980 } 986 }
@@ -993,14 +999,14 @@ static int uvc_init_video(struct uvc_video_device *video, gfp_t gfp_flags)
993 * video buffers in any way. We mark the device as frozen to make sure the URB 999 * video buffers in any way. We mark the device as frozen to make sure the URB
994 * completion handler won't try to cancel the queue when we kill the URBs. 1000 * completion handler won't try to cancel the queue when we kill the URBs.
995 */ 1001 */
996int uvc_video_suspend(struct uvc_video_device *video) 1002int uvc_video_suspend(struct uvc_streaming *stream)
997{ 1003{
998 if (!uvc_queue_streaming(&video->queue)) 1004 if (!uvc_queue_streaming(&stream->queue))
999 return 0; 1005 return 0;
1000 1006
1001 video->frozen = 1; 1007 stream->frozen = 1;
1002 uvc_uninit_video(video, 0); 1008 uvc_uninit_video(stream, 0);
1003 usb_set_interface(video->dev->udev, video->streaming->intfnum, 0); 1009 usb_set_interface(stream->dev->udev, stream->intfnum, 0);
1004 return 0; 1010 return 0;
1005} 1011}
1006 1012
@@ -1012,22 +1018,24 @@ int uvc_video_suspend(struct uvc_video_device *video)
1012 * buffers, making sure userspace applications are notified of the problem 1018 * buffers, making sure userspace applications are notified of the problem
1013 * instead of waiting forever. 1019 * instead of waiting forever.
1014 */ 1020 */
1015int uvc_video_resume(struct uvc_video_device *video) 1021int uvc_video_resume(struct uvc_streaming *stream)
1016{ 1022{
1017 int ret; 1023 int ret;
1018 1024
1019 video->frozen = 0; 1025 stream->frozen = 0;
1020 1026
1021 if ((ret = uvc_commit_video(video, &video->streaming->ctrl)) < 0) { 1027 ret = uvc_commit_video(stream, &stream->ctrl);
1022 uvc_queue_enable(&video->queue, 0); 1028 if (ret < 0) {
1029 uvc_queue_enable(&stream->queue, 0);
1023 return ret; 1030 return ret;
1024 } 1031 }
1025 1032
1026 if (!uvc_queue_streaming(&video->queue)) 1033 if (!uvc_queue_streaming(&stream->queue))
1027 return 0; 1034 return 0;
1028 1035
1029 if ((ret = uvc_init_video(video, GFP_NOIO)) < 0) 1036 ret = uvc_init_video(stream, GFP_NOIO);
1030 uvc_queue_enable(&video->queue, 0); 1037 if (ret < 0)
1038 uvc_queue_enable(&stream->queue, 0);
1031 1039
1032 return ret; 1040 return ret;
1033} 1041}
@@ -1046,48 +1054,53 @@ int uvc_video_resume(struct uvc_video_device *video)
1046 * 1054 *
1047 * This function is called before registering the device with V4L. 1055 * This function is called before registering the device with V4L.
1048 */ 1056 */
1049int uvc_video_init(struct uvc_video_device *video) 1057int uvc_video_init(struct uvc_streaming *stream)
1050{ 1058{
1051 struct uvc_streaming_control *probe = &video->streaming->ctrl; 1059 struct uvc_streaming_control *probe = &stream->ctrl;
1052 struct uvc_format *format = NULL; 1060 struct uvc_format *format = NULL;
1053 struct uvc_frame *frame = NULL; 1061 struct uvc_frame *frame = NULL;
1054 unsigned int i; 1062 unsigned int i;
1055 int ret; 1063 int ret;
1056 1064
1057 if (video->streaming->nformats == 0) { 1065 if (stream->nformats == 0) {
1058 uvc_printk(KERN_INFO, "No supported video formats found.\n"); 1066 uvc_printk(KERN_INFO, "No supported video formats found.\n");
1059 return -EINVAL; 1067 return -EINVAL;
1060 } 1068 }
1061 1069
1070 atomic_set(&stream->active, 0);
1071
1072 /* Initialize the video buffers queue. */
1073 uvc_queue_init(&stream->queue, stream->type);
1074
1062 /* Alternate setting 0 should be the default, yet the XBox Live Vision 1075 /* Alternate setting 0 should be the default, yet the XBox Live Vision
1063 * Cam (and possibly other devices) crash or otherwise misbehave if 1076 * Cam (and possibly other devices) crash or otherwise misbehave if
1064 * they don't receive a SET_INTERFACE request before any other video 1077 * they don't receive a SET_INTERFACE request before any other video
1065 * control request. 1078 * control request.
1066 */ 1079 */
1067 usb_set_interface(video->dev->udev, video->streaming->intfnum, 0); 1080 usb_set_interface(stream->dev->udev, stream->intfnum, 0);
1068 1081
1069 /* Set the streaming probe control with default streaming parameters 1082 /* Set the streaming probe control with default streaming parameters
1070 * retrieved from the device. Webcams that don't suport GET_DEF 1083 * retrieved from the device. Webcams that don't suport GET_DEF
1071 * requests on the probe control will just keep their current streaming 1084 * requests on the probe control will just keep their current streaming
1072 * parameters. 1085 * parameters.
1073 */ 1086 */
1074 if (uvc_get_video_ctrl(video, probe, 1, UVC_GET_DEF) == 0) 1087 if (uvc_get_video_ctrl(stream, probe, 1, UVC_GET_DEF) == 0)
1075 uvc_set_video_ctrl(video, probe, 1); 1088 uvc_set_video_ctrl(stream, probe, 1);
1076 1089
1077 /* Initialize the streaming parameters with the probe control current 1090 /* Initialize the streaming parameters with the probe control current
1078 * value. This makes sure SET_CUR requests on the streaming commit 1091 * value. This makes sure SET_CUR requests on the streaming commit
1079 * control will always use values retrieved from a successful GET_CUR 1092 * control will always use values retrieved from a successful GET_CUR
1080 * request on the probe control, as required by the UVC specification. 1093 * request on the probe control, as required by the UVC specification.
1081 */ 1094 */
1082 ret = uvc_get_video_ctrl(video, probe, 1, UVC_GET_CUR); 1095 ret = uvc_get_video_ctrl(stream, probe, 1, UVC_GET_CUR);
1083 if (ret < 0) 1096 if (ret < 0)
1084 return ret; 1097 return ret;
1085 1098
1086 /* Check if the default format descriptor exists. Use the first 1099 /* Check if the default format descriptor exists. Use the first
1087 * available format otherwise. 1100 * available format otherwise.
1088 */ 1101 */
1089 for (i = video->streaming->nformats; i > 0; --i) { 1102 for (i = stream->nformats; i > 0; --i) {
1090 format = &video->streaming->format[i-1]; 1103 format = &stream->format[i-1];
1091 if (format->index == probe->bFormatIndex) 1104 if (format->index == probe->bFormatIndex)
1092 break; 1105 break;
1093 } 1106 }
@@ -1112,21 +1125,20 @@ int uvc_video_init(struct uvc_video_device *video)
1112 probe->bFormatIndex = format->index; 1125 probe->bFormatIndex = format->index;
1113 probe->bFrameIndex = frame->bFrameIndex; 1126 probe->bFrameIndex = frame->bFrameIndex;
1114 1127
1115 video->streaming->cur_format = format; 1128 stream->cur_format = format;
1116 video->streaming->cur_frame = frame; 1129 stream->cur_frame = frame;
1117 atomic_set(&video->active, 0);
1118 1130
1119 /* Select the video decoding function */ 1131 /* Select the video decoding function */
1120 if (video->streaming->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { 1132 if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1121 if (video->dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT) 1133 if (stream->dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)
1122 video->decode = uvc_video_decode_isight; 1134 stream->decode = uvc_video_decode_isight;
1123 else if (video->streaming->intf->num_altsetting > 1) 1135 else if (stream->intf->num_altsetting > 1)
1124 video->decode = uvc_video_decode_isoc; 1136 stream->decode = uvc_video_decode_isoc;
1125 else 1137 else
1126 video->decode = uvc_video_decode_bulk; 1138 stream->decode = uvc_video_decode_bulk;
1127 } else { 1139 } else {
1128 if (video->streaming->intf->num_altsetting == 1) 1140 if (stream->intf->num_altsetting == 1)
1129 video->decode = uvc_video_encode_bulk; 1141 stream->decode = uvc_video_encode_bulk;
1130 else { 1142 else {
1131 uvc_printk(KERN_INFO, "Isochronous endpoints are not " 1143 uvc_printk(KERN_INFO, "Isochronous endpoints are not "
1132 "supported for video output devices.\n"); 1144 "supported for video output devices.\n");
@@ -1140,31 +1152,32 @@ int uvc_video_init(struct uvc_video_device *video)
1140/* 1152/*
1141 * Enable or disable the video stream. 1153 * Enable or disable the video stream.
1142 */ 1154 */
1143int uvc_video_enable(struct uvc_video_device *video, int enable) 1155int uvc_video_enable(struct uvc_streaming *stream, int enable)
1144{ 1156{
1145 int ret; 1157 int ret;
1146 1158
1147 if (!enable) { 1159 if (!enable) {
1148 uvc_uninit_video(video, 1); 1160 uvc_uninit_video(stream, 1);
1149 usb_set_interface(video->dev->udev, 1161 usb_set_interface(stream->dev->udev, stream->intfnum, 0);
1150 video->streaming->intfnum, 0); 1162 uvc_queue_enable(&stream->queue, 0);
1151 uvc_queue_enable(&video->queue, 0);
1152 return 0; 1163 return 0;
1153 } 1164 }
1154 1165
1155 if ((video->streaming->cur_format->flags & UVC_FMT_FLAG_COMPRESSED) || 1166 if ((stream->cur_format->flags & UVC_FMT_FLAG_COMPRESSED) ||
1156 uvc_no_drop_param) 1167 uvc_no_drop_param)
1157 video->queue.flags &= ~UVC_QUEUE_DROP_INCOMPLETE; 1168 stream->queue.flags &= ~UVC_QUEUE_DROP_INCOMPLETE;
1158 else 1169 else
1159 video->queue.flags |= UVC_QUEUE_DROP_INCOMPLETE; 1170 stream->queue.flags |= UVC_QUEUE_DROP_INCOMPLETE;
1160 1171
1161 if ((ret = uvc_queue_enable(&video->queue, 1)) < 0) 1172 ret = uvc_queue_enable(&stream->queue, 1);
1173 if (ret < 0)
1162 return ret; 1174 return ret;
1163 1175
1164 /* Commit the streaming parameters. */ 1176 /* Commit the streaming parameters. */
1165 if ((ret = uvc_commit_video(video, &video->streaming->ctrl)) < 0) 1177 ret = uvc_commit_video(stream, &stream->ctrl);
1178 if (ret < 0)
1166 return ret; 1179 return ret;
1167 1180
1168 return uvc_init_video(video, GFP_KERNEL); 1181 return uvc_init_video(stream, GFP_KERNEL);
1169} 1182}
1170 1183
diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h
index fcccf9c9b7ba..3cd9041e22a1 100644
--- a/drivers/media/video/uvc/uvcvideo.h
+++ b/drivers/media/video/uvc/uvcvideo.h
@@ -361,26 +361,6 @@ struct uvc_streaming_header {
361 __u8 bTriggerUsage; 361 __u8 bTriggerUsage;
362}; 362};
363 363
364struct uvc_streaming {
365 struct list_head list;
366
367 struct usb_interface *intf;
368 int intfnum;
369 __u16 maxpsize;
370
371 struct uvc_streaming_header header;
372 enum v4l2_buf_type type;
373
374 unsigned int nformats;
375 struct uvc_format *format;
376
377 struct uvc_streaming_control ctrl;
378 struct uvc_format *cur_format;
379 struct uvc_frame *cur_frame;
380
381 struct mutex mutex;
382};
383
384enum uvc_buffer_state { 364enum uvc_buffer_state {
385 UVC_BUF_STATE_IDLE = 0, 365 UVC_BUF_STATE_IDLE = 0,
386 UVC_BUF_STATE_QUEUED = 1, 366 UVC_BUF_STATE_QUEUED = 1,
@@ -422,26 +402,31 @@ struct uvc_video_queue {
422 struct list_head irqqueue; 402 struct list_head irqqueue;
423}; 403};
424 404
425struct uvc_video_device { 405struct uvc_streaming {
406 struct list_head list;
426 struct uvc_device *dev; 407 struct uvc_device *dev;
427 struct video_device *vdev; 408 struct video_device *vdev;
428 atomic_t active; 409 atomic_t active;
429 unsigned int frozen : 1;
430 410
431 struct list_head iterms; /* Input terminals */ 411 struct usb_interface *intf;
432 struct uvc_entity *oterm; /* Output terminal */ 412 int intfnum;
433 struct uvc_entity *sterm; /* USB streaming terminal */ 413 __u16 maxpsize;
434 struct uvc_entity *processing;
435 struct uvc_entity *selector;
436 struct list_head extensions;
437 struct mutex ctrl_mutex;
438 414
439 struct uvc_video_queue queue; 415 struct uvc_streaming_header header;
416 enum v4l2_buf_type type;
417
418 unsigned int nformats;
419 struct uvc_format *format;
440 420
441 /* Video streaming object, must always be non-NULL. */ 421 struct uvc_streaming_control ctrl;
442 struct uvc_streaming *streaming; 422 struct uvc_format *cur_format;
423 struct uvc_frame *cur_frame;
424
425 struct mutex mutex;
443 426
444 void (*decode) (struct urb *urb, struct uvc_video_device *video, 427 unsigned int frozen : 1;
428 struct uvc_video_queue queue;
429 void (*decode) (struct urb *urb, struct uvc_streaming *video,
445 struct uvc_buffer *buf); 430 struct uvc_buffer *buf);
446 431
447 /* Context data used by the bulk completion handler. */ 432 /* Context data used by the bulk completion handler. */
@@ -461,6 +446,18 @@ struct uvc_video_device {
461 __u8 last_fid; 446 __u8 last_fid;
462}; 447};
463 448
449struct uvc_video_device {
450 struct uvc_device *dev;
451
452 struct list_head iterms; /* Input terminals */
453 struct uvc_entity *oterm; /* Output terminal */
454 struct uvc_entity *sterm; /* USB streaming terminal */
455 struct uvc_entity *processing;
456 struct uvc_entity *selector;
457 struct list_head extensions;
458 struct mutex ctrl_mutex;
459};
460
464enum uvc_device_state { 461enum uvc_device_state {
465 UVC_DEV_DISCONNECTED = 1, 462 UVC_DEV_DISCONNECTED = 1,
466}; 463};
@@ -486,15 +483,15 @@ struct uvc_device {
486 483
487 struct uvc_video_device video; 484 struct uvc_video_device video;
488 485
486 /* Video Streaming interfaces */
487 struct list_head streams;
488
489 /* Status Interrupt Endpoint */ 489 /* Status Interrupt Endpoint */
490 struct usb_host_endpoint *int_ep; 490 struct usb_host_endpoint *int_ep;
491 struct urb *int_urb; 491 struct urb *int_urb;
492 __u8 *status; 492 __u8 *status;
493 struct input_dev *input; 493 struct input_dev *input;
494 char input_phys[64]; 494 char input_phys[64];
495
496 /* Video Streaming interfaces */
497 struct list_head streaming;
498}; 495};
499 496
500enum uvc_handle_state { 497enum uvc_handle_state {
@@ -503,7 +500,8 @@ enum uvc_handle_state {
503}; 500};
504 501
505struct uvc_fh { 502struct uvc_fh {
506 struct uvc_video_device *device; 503 struct uvc_video_device *video;
504 struct uvc_streaming *stream;
507 enum uvc_handle_state state; 505 enum uvc_handle_state state;
508}; 506};
509 507
@@ -600,13 +598,13 @@ static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
600extern const struct v4l2_file_operations uvc_fops; 598extern const struct v4l2_file_operations uvc_fops;
601 599
602/* Video */ 600/* Video */
603extern int uvc_video_init(struct uvc_video_device *video); 601extern int uvc_video_init(struct uvc_streaming *stream);
604extern int uvc_video_suspend(struct uvc_video_device *video); 602extern int uvc_video_suspend(struct uvc_streaming *stream);
605extern int uvc_video_resume(struct uvc_video_device *video); 603extern int uvc_video_resume(struct uvc_streaming *stream);
606extern int uvc_video_enable(struct uvc_video_device *video, int enable); 604extern int uvc_video_enable(struct uvc_streaming *stream, int enable);
607extern int uvc_probe_video(struct uvc_video_device *video, 605extern int uvc_probe_video(struct uvc_streaming *stream,
608 struct uvc_streaming_control *probe); 606 struct uvc_streaming_control *probe);
609extern int uvc_commit_video(struct uvc_video_device *video, 607extern int uvc_commit_video(struct uvc_streaming *stream,
610 struct uvc_streaming_control *ctrl); 608 struct uvc_streaming_control *ctrl);
611extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit, 609extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit,
612 __u8 intfnum, __u8 cs, void *data, __u16 size); 610 __u8 intfnum, __u8 cs, void *data, __u16 size);
@@ -660,7 +658,7 @@ extern struct usb_host_endpoint *uvc_find_endpoint(
660 struct usb_host_interface *alts, __u8 epaddr); 658 struct usb_host_interface *alts, __u8 epaddr);
661 659
662/* Quirks support */ 660/* Quirks support */
663void uvc_video_decode_isight(struct urb *urb, struct uvc_video_device *video, 661void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
664 struct uvc_buffer *buf); 662 struct uvc_buffer *buf);
665 663
666#endif /* __KERNEL__ */ 664#endif /* __KERNEL__ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-01 05:35:16 -0500