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media: uvcvideo: Announce deprecation intentions for UVCIOC_CTRL_MAP

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The UVCIOC_CTRL_MAP lets userspace create a mapping for a custom
control.

This mapping is usually created by the uvcdynctrl userspace utility. We
would like to get the mappings into the driver instead.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Signed-off-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Ricardo Ribalda
2026-03-16 13:34:45 +00:00
committed by Hans Verkuil
parent a84391b773
commit 85355f7268
2 changed files with 6 additions and 0 deletions
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2
Documentation/userspace-api/media/drivers/uvcvideo.rst
View File

@@ -109,6 +109,8 @@ IOCTL reference
UVCIOC_CTRL_MAP - Map a UVC control to a V4L2 control
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
**This IOCTL is deprecated and will be eventually removed**
Argument: struct uvc_xu_control_mapping
**Description**:

4
drivers/media/usb/uvc/uvc_v4l2.c
View File

@@ -1049,6 +1049,8 @@ static long uvc_ioctl_default(struct file *file, void *priv, bool valid_prio,
switch (cmd) {
/* Dynamic controls. */
case UVCIOC_CTRL_MAP:
pr_warn_once("uvcvideo: " DEPRECATED
"UVCIOC_CTRL_MAP ioctl will be eventually removed.\n");
return uvc_ioctl_xu_ctrl_map(chain, arg);
case UVCIOC_CTRL_QUERY:
@@ -1163,6 +1165,8 @@ static long uvc_v4l2_compat_ioctl32(struct file *file,
switch (cmd) {
case UVCIOC_CTRL_MAP32:
pr_warn_once("uvcvideo: " DEPRECATED
"UVCIOC_CTRL_MAP32 ioctl will be eventually removed.\n");
ret = uvc_v4l2_get_xu_mapping(&karg.xmap, up);
if (ret)
break;