Messages in this thread | | | From | Laurent Pinchart <> | Subject | Re: [PATCH v2 4/6] usb/uvc: Support for V4L2_CTRL_WHICH_DEF_VAL | Date | Fri, 30 Oct 2015 16:29:51 +0200 |
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Hi Ricardo,
Thank you for the patch.
On Thursday 29 October 2015 11:10:30 Ricardo Ribalda Delgado wrote: > This driver does not use the control infrastructure. > Add support for the new field which on structure > v4l2_ext_controls > > Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> --- > drivers/media/usb/uvc/uvc_v4l2.c | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/drivers/media/usb/uvc/uvc_v4l2.c > b/drivers/media/usb/uvc/uvc_v4l2.c index 2764f43607c1..d7723ce772b3 100644 > --- a/drivers/media/usb/uvc/uvc_v4l2.c > +++ b/drivers/media/usb/uvc/uvc_v4l2.c > @@ -983,6 +983,22 @@ static int uvc_ioctl_g_ext_ctrls(struct file *file, > void *fh, unsigned int i; > int ret; > > + if (ctrls->which == V4L2_CTRL_WHICH_DEF_VAL) { > + for (i = 0; i < ctrls->count; ++ctrl, ++i) { > + struct v4l2_queryctrl qc = { .id = ctrl->id }; > + > + ret = uvc_query_v4l2_ctrl(chain, &qc); > + if (ret < 0) { > + ctrls->error_idx = i; > + return ret; > + } > + > + ctrl->value = qc.default_value; > + } > + > + return 0; > + } > + > ret = uvc_ctrl_begin(chain); > if (ret < 0) > return ret; > @@ -1010,6 +1026,10 @@ static int uvc_ioctl_s_try_ext_ctrls(struct uvc_fh > *handle, unsigned int i; > int ret; > > + /* Default value cannot be changed */ > + if (ctrls->which == V4L2_CTRL_WHICH_DEF_VAL) > + return -EINVAL; > + > ret = uvc_ctrl_begin(chain); > if (ret < 0) > return ret;
-- Regards,
Laurent Pinchart
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