Simplify ioctl handling by using video_ioctl2.
Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
---
Changes since v1:
- Don't memset cap to 0 in uvc_ioctl_querycap
---
drivers/media/usb/uvc/uvc_driver.c | 1 +
drivers/media/usb/uvc/uvc_v4l2.c | 1010 ++++++++++++++++++++----------------
drivers/media/usb/uvc/uvcvideo.h | 2 +-
3 files changed, 559 insertions(+), 454 deletions(-)
diff --git a/drivers/media/usb/uvc/uvc_driver.c
b/drivers/media/usb/uvc/uvc_driver.c
index a327f3d..30163432 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -1760,6 +1760,7 @@ static int uvc_register_video(struct uvc_device *dev,
*/
vdev->v4l2_dev = &dev->vdev;
vdev->fops = &uvc_fops;
+ vdev->ioctl_ops = &uvc_ioctl_ops;
vdev->release = uvc_release;
vdev->prio = &stream->chain->prio;
if (stream->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 378ae02..a16fe21 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -551,553 +551,635 @@ static int uvc_v4l2_release(struct file *file)
return 0;
}
-static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
+static int uvc_ioctl_querycap(struct file *file, void *fh,
+ struct v4l2_capability *cap)
{
struct video_device *vdev = video_devdata(file);
struct uvc_fh *handle = file->private_data;
struct uvc_video_chain *chain = handle->chain;
struct uvc_streaming *stream = handle->stream;
- long ret = 0;
- switch (cmd) {
- /* Query capabilities */
- case VIDIOC_QUERYCAP:
- {
- struct v4l2_capability *cap = arg;
-
- memset(cap, 0, sizeof *cap);
- strlcpy(cap->driver, "uvcvideo", sizeof cap->driver);
- strlcpy(cap->card, vdev->name, sizeof cap->card);
- usb_make_path(stream->dev->udev,
- cap->bus_info, sizeof(cap->bus_info));
- cap->version = LINUX_VERSION_CODE;
- cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
- | chain->caps;
- if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
- cap->device_caps = V4L2_CAP_VIDEO_CAPTURE
- | V4L2_CAP_STREAMING;
- else
- cap->device_caps = V4L2_CAP_VIDEO_OUTPUT
- | V4L2_CAP_STREAMING;
- break;
- }
+ strlcpy(cap->driver, "uvcvideo", sizeof(cap->driver));
+ strlcpy(cap->card, vdev->name, sizeof(cap->card));
+ usb_make_path(stream->dev->udev, cap->bus_info, sizeof(cap->bus_info));
+ cap->capabilities = V4L2_CAP_DEVICE_CAPS | V4L2_CAP_STREAMING
+ | chain->caps;
+ if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+ else
+ cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
- /* Priority */
- case VIDIOC_G_PRIORITY:
- *(u32 *)arg = v4l2_prio_max(vdev->prio);
- break;
+ return 0;
+}
- case VIDIOC_S_PRIORITY:
- ret = v4l2_prio_check(vdev->prio, handle->vfh.prio);
- if (ret < 0)
- return ret;
+static int uvc_ioctl_enum_fmt(struct uvc_streaming *stream,
+ struct v4l2_fmtdesc *fmt)
+{
+ struct uvc_format *format;
+ enum v4l2_buf_type type = fmt->type;
+ __u32 index = fmt->index;
- return v4l2_prio_change(vdev->prio, &handle->vfh.prio,
- *(u32 *)arg);
+ if (fmt->type != stream->type || fmt->index >= stream->nformats)
+ return -EINVAL;
- /* Get, Set & Query control */
- case VIDIOC_QUERYCTRL:
- return uvc_query_v4l2_ctrl(chain, arg);
+ memset(fmt, 0, sizeof(*fmt));
+ fmt->index = index;
+ fmt->type = type;
+
+ format = &stream->format[fmt->index];
+ fmt->flags = 0;
+ if (format->flags & UVC_FMT_FLAG_COMPRESSED)
+ fmt->flags |= V4L2_FMT_FLAG_COMPRESSED;
+ strlcpy(fmt->description, format->name, sizeof(fmt->description));
+ fmt->description[sizeof(fmt->description) - 1] = 0;
+ fmt->pixelformat = format->fcc;
+ return 0;
+}
- case VIDIOC_G_CTRL:
- {
- struct v4l2_control *ctrl = arg;
- struct v4l2_ext_control xctrl;
+static int uvc_ioctl_enum_fmt_vid_cap(struct file *file, void *fh,
+ struct v4l2_fmtdesc *fmt)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
- memset(&xctrl, 0, sizeof xctrl);
- xctrl.id = ctrl->id;
+ return uvc_ioctl_enum_fmt(stream, fmt);
+}
- ret = uvc_ctrl_begin(chain);
- if (ret < 0)
- return ret;
+static int uvc_ioctl_enum_fmt_vid_out(struct file *file, void *fh,
+ struct v4l2_fmtdesc *fmt)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
- ret = uvc_ctrl_get(chain, &xctrl);
- uvc_ctrl_rollback(handle);
- if (ret >= 0)
- ctrl->value = xctrl.value;
- break;
- }
+ return uvc_ioctl_enum_fmt(stream, fmt);
+}
- case VIDIOC_S_CTRL:
- {
- struct v4l2_control *ctrl = arg;
- struct v4l2_ext_control xctrl;
+static int uvc_ioctl_g_fmt_vid_cap(struct file *file, void *fh,
+ struct v4l2_format *fmt)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
- ret = v4l2_prio_check(vdev->prio, handle->vfh.prio);
- if (ret < 0)
- return ret;
+ return uvc_v4l2_get_format(stream, fmt);
+}
- memset(&xctrl, 0, sizeof xctrl);
- xctrl.id = ctrl->id;
- xctrl.value = ctrl->value;
+static int uvc_ioctl_g_fmt_vid_out(struct file *file, void *fh,
+ struct v4l2_format *fmt)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
- ret = uvc_ctrl_begin(chain);
- if (ret < 0)
- return ret;
+ return uvc_v4l2_get_format(stream, fmt);
+}
- ret = uvc_ctrl_set(chain, &xctrl);
- if (ret < 0) {
- uvc_ctrl_rollback(handle);
- return ret;
- }
- ret = uvc_ctrl_commit(handle, &xctrl, 1);
- if (ret == 0)
- ctrl->value = xctrl.value;
- break;
- }
+static int uvc_ioctl_s_fmt_vid_cap(struct file *file, void *fh,
+ struct v4l2_format *fmt)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ int ret;
- case VIDIOC_QUERYMENU:
- return uvc_query_v4l2_menu(chain, arg);
+ ret = uvc_acquire_privileges(handle);
+ if (ret < 0)
+ return ret;
- case VIDIOC_G_EXT_CTRLS:
- {
- struct v4l2_ext_controls *ctrls = arg;
- struct v4l2_ext_control *ctrl = ctrls->controls;
- unsigned int i;
+ return uvc_v4l2_set_format(stream, fmt);
+}
- ret = uvc_ctrl_begin(chain);
- if (ret < 0)
- return ret;
+static int uvc_ioctl_s_fmt_vid_out(struct file *file, void *fh,
+ struct v4l2_format *fmt)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ int ret;
- for (i = 0; i < ctrls->count; ++ctrl, ++i) {
- ret = uvc_ctrl_get(chain, ctrl);
- if (ret < 0) {
- uvc_ctrl_rollback(handle);
- ctrls->error_idx = i;
- return ret;
- }
- }
- ctrls->error_idx = 0;
- ret = uvc_ctrl_rollback(handle);
- break;
- }
+ ret = uvc_acquire_privileges(handle);
+ if (ret < 0)
+ return ret;
- case VIDIOC_S_EXT_CTRLS:
- ret = v4l2_prio_check(vdev->prio, handle->vfh.prio);
- if (ret < 0)
- return ret;
- /* Fall through */
- case VIDIOC_TRY_EXT_CTRLS:
- {
- struct v4l2_ext_controls *ctrls = arg;
- struct v4l2_ext_control *ctrl = ctrls->controls;
- unsigned int i;
-
- ret = uvc_ctrl_begin(chain);
- if (ret < 0)
- return ret;
+ return uvc_v4l2_set_format(stream, fmt);
+}
- for (i = 0; i < ctrls->count; ++ctrl, ++i) {
- ret = uvc_ctrl_set(chain, ctrl);
- if (ret < 0) {
- uvc_ctrl_rollback(handle);
- ctrls->error_idx = cmd == VIDIOC_S_EXT_CTRLS
- ? ctrls->count : i;
- return ret;
- }
- }
+static int uvc_ioctl_try_fmt_vid_cap(struct file *file, void *fh,
+ struct v4l2_format *fmt)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ struct uvc_streaming_control probe;
- ctrls->error_idx = 0;
+ return uvc_v4l2_try_format(stream, fmt, &probe, NULL, NULL);
+}
- if (cmd == VIDIOC_S_EXT_CTRLS)
- ret = uvc_ctrl_commit(handle,
- ctrls->controls, ctrls->count);
- else
- ret = uvc_ctrl_rollback(handle);
- break;
- }
+static int uvc_ioctl_try_fmt_vid_out(struct file *file, void *fh,
+ struct v4l2_format *fmt)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ struct uvc_streaming_control probe;
- /* Get, Set & Enum input */
- case VIDIOC_ENUMINPUT:
- {
- const struct uvc_entity *selector = chain->selector;
- struct v4l2_input *input = arg;
- struct uvc_entity *iterm = NULL;
- u32 index = input->index;
- int pin = 0;
-
- if (selector == NULL ||
- (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
- if (index != 0)
- return -EINVAL;
- list_for_each_entry(iterm, &chain->entities, chain) {
- if (UVC_ENTITY_IS_ITERM(iterm))
- break;
- }
- pin = iterm->id;
- } else if (index < selector->bNrInPins) {
- pin = selector->baSourceID[index];
- list_for_each_entry(iterm, &chain->entities, chain) {
- if (!UVC_ENTITY_IS_ITERM(iterm))
- continue;
- if (iterm->id == pin)
- break;
- }
- }
+ return uvc_v4l2_try_format(stream, fmt, &probe, NULL, NULL);
+}
- if (iterm == NULL || iterm->id != pin)
- return -EINVAL;
+static int uvc_ioctl_reqbufs(struct file *file, void *fh,
+ struct v4l2_requestbuffers *rb)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ int ret;
- memset(input, 0, sizeof *input);
- input->index = index;
- strlcpy(input->name, iterm->name, sizeof input->name);
- if (UVC_ENTITY_TYPE(iterm) == UVC_ITT_CAMERA)
- input->type = V4L2_INPUT_TYPE_CAMERA;
- break;
- }
+ ret = uvc_acquire_privileges(handle);
+ if (ret < 0)
+ return ret;
- case VIDIOC_G_INPUT:
- {
- u8 input;
+ mutex_lock(&stream->mutex);
+ ret = uvc_alloc_buffers(&stream->queue, rb);
+ mutex_unlock(&stream->mutex);
+ if (ret < 0)
+ return ret;
- if (chain->selector == NULL ||
- (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
- *(int *)arg = 0;
- break;
- }
+ if (ret == 0)
+ uvc_dismiss_privileges(handle);
- ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,
- chain->selector->id, chain->dev->intfnum,
- UVC_SU_INPUT_SELECT_CONTROL, &input, 1);
- if (ret < 0)
- return ret;
+ return 0;
+}
- *(int *)arg = input - 1;
- break;
- }
+static int uvc_ioctl_querybuf(struct file *file, void *fh,
+ struct v4l2_buffer *buf)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
- case VIDIOC_S_INPUT:
- {
- u32 input = *(u32 *)arg + 1;
+ if (!uvc_has_privileges(handle))
+ return -EBUSY;
- ret = v4l2_prio_check(vdev->prio, handle->vfh.prio);
- if (ret < 0)
- return ret;
+ return uvc_query_buffer(&stream->queue, buf);
+}
- if ((ret = uvc_acquire_privileges(handle)) < 0)
- return ret;
+static int uvc_ioctl_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
- if (chain->selector == NULL ||
- (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
- if (input != 1)
- return -EINVAL;
- break;
- }
+ if (!uvc_has_privileges(handle))
+ return -EBUSY;
- if (input == 0 || input > chain->selector->bNrInPins)
- return -EINVAL;
+ return uvc_queue_buffer(&stream->queue, buf);
+}
- return uvc_query_ctrl(chain->dev, UVC_SET_CUR,
- chain->selector->id, chain->dev->intfnum,
- UVC_SU_INPUT_SELECT_CONTROL, &input, 1);
- }
+static int uvc_ioctl_dqbuf(struct file *file, void *fh, struct v4l2_buffer
*buf)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
- /* Try, Get, Set & Enum format */
- case VIDIOC_ENUM_FMT:
- {
- struct v4l2_fmtdesc *fmt = arg;
- struct uvc_format *format;
- enum v4l2_buf_type type = fmt->type;
- __u32 index = fmt->index;
+ if (!uvc_has_privileges(handle))
+ return -EBUSY;
- if (fmt->type != stream->type ||
- fmt->index >= stream->nformats)
- return -EINVAL;
+ return uvc_dequeue_buffer(&stream->queue, buf,
+ file->f_flags & O_NONBLOCK);
+}
- memset(fmt, 0, sizeof(*fmt));
- fmt->index = index;
- fmt->type = type;
-
- format = &stream->format[fmt->index];
- fmt->flags = 0;
- if (format->flags & UVC_FMT_FLAG_COMPRESSED)
- fmt->flags |= V4L2_FMT_FLAG_COMPRESSED;
- strlcpy(fmt->description, format->name,
- sizeof fmt->description);
- fmt->description[sizeof fmt->description - 1] = 0;
- fmt->pixelformat = format->fcc;
- break;
- }
+static int uvc_ioctl_create_bufs(struct file *file, void *fh,
+ struct v4l2_create_buffers *cb)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ int ret;
- case VIDIOC_TRY_FMT:
- {
- struct uvc_streaming_control probe;
+ ret = uvc_acquire_privileges(handle);
+ if (ret < 0)
+ return ret;
- return uvc_v4l2_try_format(stream, arg, &probe, NULL, NULL);
- }
+ return uvc_create_buffers(&stream->queue, cb);
+}
- case VIDIOC_S_FMT:
- ret = v4l2_prio_check(vdev->prio, handle->vfh.prio);
- if (ret < 0)
- return ret;
+static int uvc_ioctl_streamon(struct file *file, void *fh,
+ enum v4l2_buf_type type)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ int ret;
- if ((ret = uvc_acquire_privileges(handle)) < 0)
- return ret;
+ if (type != stream->type)
+ return -EINVAL;
+
+ if (!uvc_has_privileges(handle))
+ return -EBUSY;
+
+ mutex_lock(&stream->mutex);
+ ret = uvc_video_enable(stream, 1);
+ mutex_unlock(&stream->mutex);
- return uvc_v4l2_set_format(stream, arg);
+ return ret;
+}
- case VIDIOC_G_FMT:
- return uvc_v4l2_get_format(stream, arg);
+static int uvc_ioctl_streamoff(struct file *file, void *fh,
+ enum v4l2_buf_type type)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ int ret;
- /* Frame size enumeration */
- case VIDIOC_ENUM_FRAMESIZES:
- {
- struct v4l2_frmsizeenum *fsize = arg;
- struct uvc_format *format = NULL;
- struct uvc_frame *frame;
- int i;
+ if (type != stream->type)
+ return -EINVAL;
- /* Look for the given pixel format */
- for (i = 0; i < stream->nformats; i++) {
- if (stream->format[i].fcc ==
- fsize->pixel_format) {
- format = &stream->format[i];
- break;
- }
- }
- if (format == NULL)
- return -EINVAL;
+ if (!uvc_has_privileges(handle))
+ return -EBUSY;
- if (fsize->index >= format->nframes)
- return -EINVAL;
+ mutex_lock(&stream->mutex);
+ ret = uvc_video_enable(stream, 0);
+ mutex_unlock(&stream->mutex);
- frame = &format->frame[fsize->index];
- fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
- fsize->discrete.width = frame->wWidth;
- fsize->discrete.height = frame->wHeight;
- break;
- }
+ return ret;
+}
- /* Frame interval enumeration */
- case VIDIOC_ENUM_FRAMEINTERVALS:
- {
- struct v4l2_frmivalenum *fival = arg;
- struct uvc_format *format = NULL;
- struct uvc_frame *frame = NULL;
- int i;
-
- /* Look for the given pixel format and frame size */
- for (i = 0; i < stream->nformats; i++) {
- if (stream->format[i].fcc ==
- fival->pixel_format) {
- format = &stream->format[i];
- break;
- }
- }
- if (format == NULL)
+static int uvc_ioctl_enum_input(struct file *file, void *fh,
+ struct v4l2_input *input)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_video_chain *chain = handle->chain;
+ const struct uvc_entity *selector = chain->selector;
+ struct uvc_entity *iterm = NULL;
+ u32 index = input->index;
+ int pin = 0;
+
+ if (selector == NULL ||
+ (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
+ if (index != 0)
return -EINVAL;
-
- for (i = 0; i < format->nframes; i++) {
- if (format->frame[i].wWidth == fival->width &&
- format->frame[i].wHeight == fival->height) {
- frame = &format->frame[i];
+ list_for_each_entry(iterm, &chain->entities, chain) {
+ if (UVC_ENTITY_IS_ITERM(iterm))
break;
- }
}
- if (frame == NULL)
- return -EINVAL;
-
- if (frame->bFrameIntervalType) {
- if (fival->index >= frame->bFrameIntervalType)
- return -EINVAL;
-
- fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
- fival->discrete.numerator =
- frame->dwFrameInterval[fival->index];
- fival->discrete.denominator = 10000000;
- uvc_simplify_fraction(&fival->discrete.numerator,
- &fival->discrete.denominator, 8, 333);
- } else {
- fival->type = V4L2_FRMIVAL_TYPE_STEPWISE;
- fival->stepwise.min.numerator =
- frame->dwFrameInterval[0];
- fival->stepwise.min.denominator = 10000000;
- fival->stepwise.max.numerator =
- frame->dwFrameInterval[1];
- fival->stepwise.max.denominator = 10000000;
- fival->stepwise.step.numerator =
- frame->dwFrameInterval[2];
- fival->stepwise.step.denominator = 10000000;
- uvc_simplify_fraction(&fival->stepwise.min.numerator,
- &fival->stepwise.min.denominator, 8, 333);
- uvc_simplify_fraction(&fival->stepwise.max.numerator,
- &fival->stepwise.max.denominator, 8, 333);
- uvc_simplify_fraction(&fival->stepwise.step.numerator,
- &fival->stepwise.step.denominator, 8, 333);
+ pin = iterm->id;
+ } else if (index < selector->bNrInPins) {
+ pin = selector->baSourceID[index];
+ list_for_each_entry(iterm, &chain->entities, chain) {
+ if (!UVC_ENTITY_IS_ITERM(iterm))
+ continue;
+ if (iterm->id == pin)
+ break;
}
- break;
}
- /* Get & Set streaming parameters */
- case VIDIOC_G_PARM:
- return uvc_v4l2_get_streamparm(stream, arg);
+ if (iterm == NULL || iterm->id != pin)
+ return -EINVAL;
- case VIDIOC_S_PARM:
- ret = v4l2_prio_check(vdev->prio, handle->vfh.prio);
- if (ret < 0)
- return ret;
+ memset(input, 0, sizeof(*input));
+ input->index = index;
+ strlcpy(input->name, iterm->name, sizeof(input->name));
+ if (UVC_ENTITY_TYPE(iterm) == UVC_ITT_CAMERA)
+ input->type = V4L2_INPUT_TYPE_CAMERA;
- if ((ret = uvc_acquire_privileges(handle)) < 0)
- return ret;
+ return 0;
+}
- return uvc_v4l2_set_streamparm(stream, arg);
+static int uvc_ioctl_g_input(struct file *file, void *fh, unsigned int *input)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_video_chain *chain = handle->chain;
+ int ret;
+ u8 i;
- /* Cropping and scaling */
- case VIDIOC_CROPCAP:
- {
- struct v4l2_cropcap *ccap = arg;
+ if (chain->selector == NULL ||
+ (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
+ *input = 0;
+ return 0;
+ }
- if (ccap->type != stream->type)
- return -EINVAL;
+ ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, chain->selector->id,
+ chain->dev->intfnum, UVC_SU_INPUT_SELECT_CONTROL,
+ &i, 1);
+ if (ret < 0)
+ return ret;
- ccap->bounds.left = 0;
- ccap->bounds.top = 0;
+ *input = i - 1;
+ return 0;
+}
- mutex_lock(&stream->mutex);
- ccap->bounds.width = stream->cur_frame->wWidth;
- ccap->bounds.height = stream->cur_frame->wHeight;
- mutex_unlock(&stream->mutex);
+static int uvc_ioctl_s_input(struct file *file, void *fh, unsigned int input)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_video_chain *chain = handle->chain;
+ int ret;
+ u32 i;
- ccap->defrect = ccap->bounds;
+ ret = uvc_acquire_privileges(handle);
+ if (ret < 0)
+ return ret;
- ccap->pixelaspect.numerator = 1;
- ccap->pixelaspect.denominator = 1;
- break;
+ if (chain->selector == NULL ||
+ (chain->dev->quirks & UVC_QUIRK_IGNORE_SELECTOR_UNIT)) {
+ if (input)
+ return -EINVAL;
+ return 0;
}
- case VIDIOC_G_CROP:
- case VIDIOC_S_CROP:
- return -ENOTTY;
+ if (input >= chain->selector->bNrInPins)
+ return -EINVAL;
- /* Buffers & streaming */
- case VIDIOC_REQBUFS:
- ret = v4l2_prio_check(vdev->prio, handle->vfh.prio);
- if (ret < 0)
- return ret;
+ i = input + 1;
+ return uvc_query_ctrl(chain->dev, UVC_SET_CUR, chain->selector->id,
+ chain->dev->intfnum, UVC_SU_INPUT_SELECT_CONTROL,
+ &i, 1);
+}
- if ((ret = uvc_acquire_privileges(handle)) < 0)
- return ret;
+static int uvc_ioctl_queryctrl(struct file *file, void *fh,
+ struct v4l2_queryctrl *qc)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_video_chain *chain = handle->chain;
- mutex_lock(&stream->mutex);
- ret = uvc_alloc_buffers(&stream->queue, arg);
- mutex_unlock(&stream->mutex);
- if (ret < 0)
- return ret;
+ return uvc_query_v4l2_ctrl(chain, qc);
+}
- if (ret == 0)
- uvc_dismiss_privileges(handle);
+static int uvc_ioctl_g_ctrl(struct file *file, void *fh,
+ struct v4l2_control *ctrl)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_video_chain *chain = handle->chain;
+ struct v4l2_ext_control xctrl;
+ int ret;
- ret = 0;
- break;
+ memset(&xctrl, 0, sizeof(xctrl));
+ xctrl.id = ctrl->id;
- case VIDIOC_QUERYBUF:
- {
- struct v4l2_buffer *buf = arg;
+ ret = uvc_ctrl_begin(chain);
+ if (ret < 0)
+ return ret;
- if (!uvc_has_privileges(handle))
- return -EBUSY;
+ ret = uvc_ctrl_get(chain, &xctrl);
+ uvc_ctrl_rollback(handle);
+ if (ret < 0)
+ return ret;
- return uvc_query_buffer(&stream->queue, buf);
- }
+ ctrl->value = xctrl.value;
+ return 0;
+}
- case VIDIOC_CREATE_BUFS:
- {
- struct v4l2_create_buffers *cb = arg;
+static int uvc_ioctl_s_ctrl(struct file *file, void *fh,
+ struct v4l2_control *ctrl)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_video_chain *chain = handle->chain;
+ struct v4l2_ext_control xctrl;
+ int ret;
- ret = uvc_acquire_privileges(handle);
- if (ret < 0)
- return ret;
+ memset(&xctrl, 0, sizeof(xctrl));
+ xctrl.id = ctrl->id;
+ xctrl.value = ctrl->value;
- return uvc_create_buffers(&stream->queue, cb);
+ ret = uvc_ctrl_begin(chain);
+ if (ret < 0)
+ return ret;
+
+ ret = uvc_ctrl_set(chain, &xctrl);
+ if (ret < 0) {
+ uvc_ctrl_rollback(handle);
+ return ret;
}
- case VIDIOC_QBUF:
- if (!uvc_has_privileges(handle))
- return -EBUSY;
+ ret = uvc_ctrl_commit(handle, &xctrl, 1);
+ if (ret < 0)
+ return ret;
- return uvc_queue_buffer(&stream->queue, arg);
+ ctrl->value = xctrl.value;
+ return 0;
+}
- case VIDIOC_DQBUF:
- if (!uvc_has_privileges(handle))
- return -EBUSY;
+static int uvc_ioctl_g_ext_ctrls(struct file *file, void *fh,
+ struct v4l2_ext_controls *ctrls)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_video_chain *chain = handle->chain;
+ struct v4l2_ext_control *ctrl = ctrls->controls;
+ unsigned int i;
+ int ret;
- return uvc_dequeue_buffer(&stream->queue, arg,
- file->f_flags & O_NONBLOCK);
+ ret = uvc_ctrl_begin(chain);
+ if (ret < 0)
+ return ret;
- case VIDIOC_STREAMON:
- {
- int *type = arg;
+ for (i = 0; i < ctrls->count; ++ctrl, ++i) {
+ ret = uvc_ctrl_get(chain, ctrl);
+ if (ret < 0) {
+ uvc_ctrl_rollback(handle);
+ ctrls->error_idx = i;
+ return ret;
+ }
+ }
- if (*type != stream->type)
- return -EINVAL;
+ ctrls->error_idx = 0;
- ret = v4l2_prio_check(vdev->prio, handle->vfh.prio);
- if (ret < 0)
- return ret;
+ return uvc_ctrl_rollback(handle);
+}
- if (!uvc_has_privileges(handle))
- return -EBUSY;
+static int uvc_ioctl_s_try_ext_ctrls(struct uvc_fh *handle,
+ struct v4l2_ext_controls *ctrls,
+ bool commit)
+{
+ struct v4l2_ext_control *ctrl = ctrls->controls;
+ struct uvc_video_chain *chain = handle->chain;
+ unsigned int i;
+ int ret;
- mutex_lock(&stream->mutex);
- ret = uvc_video_enable(stream, 1);
- mutex_unlock(&stream->mutex);
- if (ret < 0)
+ ret = uvc_ctrl_begin(chain);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < ctrls->count; ++ctrl, ++i) {
+ ret = uvc_ctrl_set(chain, ctrl);
+ if (ret < 0) {
+ uvc_ctrl_rollback(handle);
+ ctrls->error_idx = commit ? ctrls->count : i;
return ret;
- break;
+ }
}
- case VIDIOC_STREAMOFF:
- {
- int *type = arg;
+ ctrls->error_idx = 0;
- if (*type != stream->type)
- return -EINVAL;
+ if (commit)
+ return uvc_ctrl_commit(handle, ctrls->controls, ctrls->count);
+ else
+ return uvc_ctrl_rollback(handle);
+}
- ret = v4l2_prio_check(vdev->prio, handle->vfh.prio);
- if (ret < 0)
- return ret;
+static int uvc_ioctl_s_ext_ctrls(struct file *file, void *fh,
+ struct v4l2_ext_controls *ctrls)
+{
+ struct uvc_fh *handle = fh;
- if (!uvc_has_privileges(handle))
- return -EBUSY;
+ return uvc_ioctl_s_try_ext_ctrls(handle, ctrls, true);
+}
+
+static int uvc_ioctl_try_ext_ctrls(struct file *file, void *fh,
+ struct v4l2_ext_controls *ctrls)
+{
+ struct uvc_fh *handle = fh;
+
+ return uvc_ioctl_s_try_ext_ctrls(handle, ctrls, false);
+}
- return uvc_video_enable(stream, 0);
+static int uvc_ioctl_querymenu(struct file *file, void *fh,
+ struct v4l2_querymenu *qm)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_video_chain *chain = handle->chain;
+
+ return uvc_query_v4l2_menu(chain, qm);
+}
+
+static int uvc_ioctl_cropcap(struct file *file, void *fh,
+ struct v4l2_cropcap *ccap)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+
+ if (ccap->type != stream->type)
+ return -EINVAL;
+
+ ccap->bounds.left = 0;
+ ccap->bounds.top = 0;
+ mutex_lock(&stream->mutex);
+ ccap->bounds.width = stream->cur_frame->wWidth;
+ ccap->bounds.height = stream->cur_frame->wHeight;
+ mutex_unlock(&stream->mutex);
+
+ ccap->defrect = ccap->bounds;
+
+ ccap->pixelaspect.numerator = 1;
+ ccap->pixelaspect.denominator = 1;
+ return 0;
+}
+
+static int uvc_ioctl_g_parm(struct file *file, void *fh,
+ struct v4l2_streamparm *parm)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+
+ return uvc_v4l2_get_streamparm(stream, parm);
+}
+
+static int uvc_ioctl_s_parm(struct file *file, void *fh,
+ struct v4l2_streamparm *parm)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ int ret;
+
+ ret = uvc_acquire_privileges(handle);
+ if (ret < 0)
+ return ret;
+
+ return uvc_v4l2_set_streamparm(stream, parm);
+}
+
+static int uvc_ioctl_enum_framesizes(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ struct uvc_format *format = NULL;
+ struct uvc_frame *frame;
+ int i;
+
+ /* Look for the given pixel format */
+ for (i = 0; i < stream->nformats; i++) {
+ if (stream->format[i].fcc == fsize->pixel_format) {
+ format = &stream->format[i];
+ break;
+ }
}
+ if (format == NULL)
+ return -EINVAL;
- case VIDIOC_SUBSCRIBE_EVENT:
- {
- struct v4l2_event_subscription *sub = arg;
+ if (fsize->index >= format->nframes)
+ return -EINVAL;
- switch (sub->type) {
- case V4L2_EVENT_CTRL:
- return v4l2_event_subscribe(&handle->vfh, sub, 0,
- &uvc_ctrl_sub_ev_ops);
- default:
- return -EINVAL;
+ frame = &format->frame[fsize->index];
+ fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ fsize->discrete.width = frame->wWidth;
+ fsize->discrete.height = frame->wHeight;
+ return 0;
+}
+
+static int uvc_ioctl_enum_frameintervals(struct file *file, void *fh,
+ struct v4l2_frmivalenum *fival)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_streaming *stream = handle->stream;
+ struct uvc_format *format = NULL;
+ struct uvc_frame *frame = NULL;
+ int i;
+
+ /* Look for the given pixel format and frame size */
+ for (i = 0; i < stream->nformats; i++) {
+ if (stream->format[i].fcc == fival->pixel_format) {
+ format = &stream->format[i];
+ break;
}
}
+ if (format == NULL)
+ return -EINVAL;
- case VIDIOC_UNSUBSCRIBE_EVENT:
- return v4l2_event_unsubscribe(&handle->vfh, arg);
+ for (i = 0; i < format->nframes; i++) {
+ if (format->frame[i].wWidth == fival->width &&
+ format->frame[i].wHeight == fival->height) {
+ frame = &format->frame[i];
+ break;
+ }
+ }
+ if (frame == NULL)
+ return -EINVAL;
- case VIDIOC_DQEVENT:
- return v4l2_event_dequeue(&handle->vfh, arg,
- file->f_flags & O_NONBLOCK);
+ if (frame->bFrameIntervalType) {
+ if (fival->index >= frame->bFrameIntervalType)
+ return -EINVAL;
- /* Analog video standards make no sense for digital cameras. */
- case VIDIOC_ENUMSTD:
- case VIDIOC_QUERYSTD:
- case VIDIOC_G_STD:
- case VIDIOC_S_STD:
+ fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
+ fival->discrete.numerator =
+ frame->dwFrameInterval[fival->index];
+ fival->discrete.denominator = 10000000;
+ uvc_simplify_fraction(&fival->discrete.numerator,
+ &fival->discrete.denominator, 8, 333);
+ } else {
+ fival->type = V4L2_FRMIVAL_TYPE_STEPWISE;
+ fival->stepwise.min.numerator = frame->dwFrameInterval[0];
+ fival->stepwise.min.denominator = 10000000;
+ fival->stepwise.max.numerator = frame->dwFrameInterval[1];
+ fival->stepwise.max.denominator = 10000000;
+ fival->stepwise.step.numerator = frame->dwFrameInterval[2];
+ fival->stepwise.step.denominator = 10000000;
+ uvc_simplify_fraction(&fival->stepwise.min.numerator,
+ &fival->stepwise.min.denominator, 8, 333);
+ uvc_simplify_fraction(&fival->stepwise.max.numerator,
+ &fival->stepwise.max.denominator, 8, 333);
+ uvc_simplify_fraction(&fival->stepwise.step.numerator,
+ &fival->stepwise.step.denominator, 8, 333);
+ }
- case VIDIOC_OVERLAY:
+ return 0;
+}
- case VIDIOC_ENUMAUDIO:
- case VIDIOC_ENUMAUDOUT:
+static int uvc_ioctl_subscribe_event(struct v4l2_fh *fh,
+ const struct v4l2_event_subscription *sub)
+{
+ switch (sub->type) {
+ case V4L2_EVENT_CTRL:
+ return v4l2_event_subscribe(fh, sub, 0, &uvc_ctrl_sub_ev_ops);
+ default:
+ return -EINVAL;
+ }
+}
- case VIDIOC_ENUMOUTPUT:
- uvc_trace(UVC_TRACE_IOCTL, "Unsupported ioctl 0x%08x\n", cmd);
- return -ENOTTY;
+static long uvc_ioctl_default(struct file *file, void *fh, bool valid_prio,
+ unsigned int cmd, void *arg)
+{
+ struct uvc_fh *handle = fh;
+ struct uvc_video_chain *chain = handle->chain;
+ switch (cmd) {
+ /* Dynamic controls. */
case UVCIOC_CTRL_MAP:
return uvc_ioctl_ctrl_map(chain, arg);
@@ -1105,23 +1187,8 @@ static long uvc_v4l2_do_ioctl(struct file *file,
unsigned int cmd, void *arg)
return uvc_xu_ctrl_query(chain, arg);
default:
- uvc_trace(UVC_TRACE_IOCTL, "Unknown ioctl 0x%08x\n", cmd);
return -ENOTTY;
}
-
- return ret;
-}
-
-static long uvc_v4l2_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- if (uvc_trace_param & UVC_TRACE_IOCTL) {
- uvc_printk(KERN_DEBUG, "uvc_v4l2_ioctl(");
- v4l_printk_ioctl(NULL, cmd);
- printk(")\n");
- }
-
- return video_usercopy(file, cmd, arg, uvc_v4l2_do_ioctl);
}
#ifdef CONFIG_COMPAT
@@ -1304,7 +1371,7 @@ static long uvc_v4l2_compat_ioctl32(struct file *file,
old_fs = get_fs();
set_fs(KERNEL_DS);
- ret = uvc_v4l2_ioctl(file, cmd, (unsigned long)&karg);
+ ret = video_ioctl2(file, cmd, (unsigned long)&karg);
set_fs(old_fs);
if (ret < 0)
@@ -1365,11 +1432,48 @@ static unsigned long uvc_v4l2_get_unmapped_area(struct
file *file,
}
#endif
+const struct v4l2_ioctl_ops uvc_ioctl_ops = {
+ .vidioc_querycap = uvc_ioctl_querycap,
+ .vidioc_enum_fmt_vid_cap = uvc_ioctl_enum_fmt_vid_cap,
+ .vidioc_enum_fmt_vid_out = uvc_ioctl_enum_fmt_vid_out,
+ .vidioc_g_fmt_vid_cap = uvc_ioctl_g_fmt_vid_cap,
+ .vidioc_g_fmt_vid_out = uvc_ioctl_g_fmt_vid_out,
+ .vidioc_s_fmt_vid_cap = uvc_ioctl_s_fmt_vid_cap,
+ .vidioc_s_fmt_vid_out = uvc_ioctl_s_fmt_vid_out,
+ .vidioc_try_fmt_vid_cap = uvc_ioctl_try_fmt_vid_cap,
+ .vidioc_try_fmt_vid_out = uvc_ioctl_try_fmt_vid_out,
+ .vidioc_reqbufs = uvc_ioctl_reqbufs,
+ .vidioc_querybuf = uvc_ioctl_querybuf,
+ .vidioc_qbuf = uvc_ioctl_qbuf,
+ .vidioc_dqbuf = uvc_ioctl_dqbuf,
+ .vidioc_create_bufs = uvc_ioctl_create_bufs,
+ .vidioc_streamon = uvc_ioctl_streamon,
+ .vidioc_streamoff = uvc_ioctl_streamoff,
+ .vidioc_enum_input = uvc_ioctl_enum_input,
+ .vidioc_g_input = uvc_ioctl_g_input,
+ .vidioc_s_input = uvc_ioctl_s_input,
+ .vidioc_queryctrl = uvc_ioctl_queryctrl,
+ .vidioc_g_ctrl = uvc_ioctl_g_ctrl,
+ .vidioc_s_ctrl = uvc_ioctl_s_ctrl,
+ .vidioc_g_ext_ctrls = uvc_ioctl_g_ext_ctrls,
+ .vidioc_s_ext_ctrls = uvc_ioctl_s_ext_ctrls,
+ .vidioc_try_ext_ctrls = uvc_ioctl_try_ext_ctrls,
+ .vidioc_querymenu = uvc_ioctl_querymenu,
+ .vidioc_cropcap = uvc_ioctl_cropcap,
+ .vidioc_g_parm = uvc_ioctl_g_parm,
+ .vidioc_s_parm = uvc_ioctl_s_parm,
+ .vidioc_enum_framesizes = uvc_ioctl_enum_framesizes,
+ .vidioc_enum_frameintervals = uvc_ioctl_enum_frameintervals,
+ .vidioc_subscribe_event = uvc_ioctl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+ .vidioc_default = uvc_ioctl_default,
+};
+
const struct v4l2_file_operations uvc_fops = {
.owner = THIS_MODULE,
.open = uvc_v4l2_open,
.release = uvc_v4l2_release,
- .unlocked_ioctl = uvc_v4l2_ioctl,
+ .unlocked_ioctl = video_ioctl2,
#ifdef CONFIG_COMPAT
.compat_ioctl32 = uvc_v4l2_compat_ioctl32,
#endif
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index 2600c96..53db7ed 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -580,7 +580,6 @@ struct uvc_driver {
#define UVC_TRACE_FORMAT (1 << 3)
#define UVC_TRACE_CAPTURE (1 << 4)
#define UVC_TRACE_CALLS (1 << 5)
-#define UVC_TRACE_IOCTL (1 << 6)
#define UVC_TRACE_FRAME (1 << 7)
#define UVC_TRACE_SUSPEND (1 << 8)
#define UVC_TRACE_STATUS (1 << 9)
@@ -654,6 +653,7 @@ static inline int uvc_queue_streaming(struct
uvc_video_queue *queue)
}
/* V4L2 interface */
+extern const struct v4l2_ioctl_ops uvc_ioctl_ops;
extern const struct v4l2_file_operations uvc_fops;
/* Media controller */
--
2.0.4
--
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