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path: root/drivers/usb/gadget/uvc_v4l2.c
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Diffstat (limited to 'drivers/usb/gadget/uvc_v4l2.c')
-rw-r--r--drivers/usb/gadget/uvc_v4l2.c71
1 files changed, 40 insertions, 31 deletions
diff --git a/drivers/usb/gadget/uvc_v4l2.c b/drivers/usb/gadget/uvc_v4l2.c
index 2ca9386d655b..ad48e81155e2 100644
--- a/drivers/usb/gadget/uvc_v4l2.c
+++ b/drivers/usb/gadget/uvc_v4l2.c
@@ -41,9 +41,8 @@ uvc_send_response(struct uvc_device *uvc, struct uvc_request_data *data)
req->length = min_t(unsigned int, uvc->event_length, data->length);
req->zero = data->length < uvc->event_length;
- req->dma = DMA_ADDR_INVALID;
- memcpy(req->buf, data->data, data->length);
+ memcpy(req->buf, data->data, req->length);
return usb_ep_queue(cdev->gadget->ep0, req, GFP_KERNEL);
}
@@ -148,16 +147,13 @@ uvc_v4l2_release(struct file *file)
uvc_function_disconnect(uvc);
uvc_video_enable(video, 0);
- mutex_lock(&video->queue.mutex);
- if (uvc_free_buffers(&video->queue) < 0)
- printk(KERN_ERR "uvc_v4l2_release: Unable to free "
- "buffers.\n");
- mutex_unlock(&video->queue.mutex);
+ uvc_free_buffers(&video->queue);
file->private_data = NULL;
v4l2_fh_del(&handle->vfh);
v4l2_fh_exit(&handle->vfh);
kfree(handle);
+
return 0;
}
@@ -178,9 +174,9 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
struct v4l2_capability *cap = arg;
memset(cap, 0, sizeof *cap);
- strncpy(cap->driver, "g_uvc", sizeof(cap->driver));
- strncpy(cap->card, cdev->gadget->name, sizeof(cap->card));
- strncpy(cap->bus_info, dev_name(&cdev->gadget->dev),
+ strlcpy(cap->driver, "g_uvc", sizeof(cap->driver));
+ strlcpy(cap->card, cdev->gadget->name, sizeof(cap->card));
+ strlcpy(cap->bus_info, dev_name(&cdev->gadget->dev),
sizeof cap->bus_info);
cap->version = DRIVER_VERSION_NUMBER;
cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
@@ -192,7 +188,7 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
{
struct v4l2_format *fmt = arg;
- if (fmt->type != video->queue.type)
+ if (fmt->type != video->queue.queue.type)
return -EINVAL;
return uvc_v4l2_get_format(video, fmt);
@@ -202,7 +198,7 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
{
struct v4l2_format *fmt = arg;
- if (fmt->type != video->queue.type)
+ if (fmt->type != video->queue.queue.type)
return -EINVAL;
return uvc_v4l2_set_format(video, fmt);
@@ -213,16 +209,13 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
{
struct v4l2_requestbuffers *rb = arg;
- if (rb->type != video->queue.type ||
- rb->memory != V4L2_MEMORY_MMAP)
+ if (rb->type != video->queue.queue.type)
return -EINVAL;
- ret = uvc_alloc_buffers(&video->queue, rb->count,
- video->imagesize);
+ ret = uvc_alloc_buffers(&video->queue, rb);
if (ret < 0)
return ret;
- rb->count = ret;
ret = 0;
break;
}
@@ -231,9 +224,6 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
{
struct v4l2_buffer *buf = arg;
- if (buf->type != video->queue.type)
- return -EINVAL;
-
return uvc_query_buffer(&video->queue, buf);
}
@@ -251,24 +241,36 @@ uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
{
int *type = arg;
- if (*type != video->queue.type)
+ if (*type != video->queue.queue.type)
return -EINVAL;
- return uvc_video_enable(video, 1);
+ /* Enable UVC video. */
+ ret = uvc_video_enable(video, 1);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Complete the alternate setting selection setup phase now that
+ * userspace is ready to provide video frames.
+ */
+ uvc_function_setup_continue(uvc);
+ uvc->state = UVC_STATE_STREAMING;
+
+ return 0;
}
case VIDIOC_STREAMOFF:
{
int *type = arg;
- if (*type != video->queue.type)
+ if (*type != video->queue.queue.type)
return -EINVAL;
return uvc_video_enable(video, 0);
}
/* Events */
- case VIDIOC_DQEVENT:
+ case VIDIOC_DQEVENT:
{
struct v4l2_event *event = arg;
@@ -333,17 +335,21 @@ uvc_v4l2_poll(struct file *file, poll_table *wait)
{
struct video_device *vdev = video_devdata(file);
struct uvc_device *uvc = video_get_drvdata(vdev);
- struct uvc_file_handle *handle = to_uvc_file_handle(file->private_data);
- unsigned int mask = 0;
- poll_wait(file, &handle->vfh.wait, wait);
- if (v4l2_event_pending(&handle->vfh))
- mask |= POLLPRI;
+ return uvc_queue_poll(&uvc->video.queue, file, wait);
+}
- mask |= uvc_queue_poll(&uvc->video.queue, file, wait);
+#ifndef CONFIG_MMU
+static unsigned long uvc_v4l2_get_unmapped_area(struct file *file,
+ unsigned long addr, unsigned long len, unsigned long pgoff,
+ unsigned long flags)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct uvc_device *uvc = video_get_drvdata(vdev);
- return mask;
+ return uvc_queue_get_unmapped_area(&uvc->video.queue, pgoff);
}
+#endif
static struct v4l2_file_operations uvc_v4l2_fops = {
.owner = THIS_MODULE,
@@ -352,5 +358,8 @@ static struct v4l2_file_operations uvc_v4l2_fops = {
.ioctl = uvc_v4l2_ioctl,
.mmap = uvc_v4l2_mmap,
.poll = uvc_v4l2_poll,
+#ifndef CONFIG_MMU
+ .get_unmapped_area = uvc_v4l2_get_unmapped_area,
+#endif
};