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[34.88.38.80]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-595804003a4sm3413302e87.59.2025.11.17.12.14.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Nov 2025 12:14:19 -0800 (PST) From: Ricardo Ribalda Date: Mon, 17 Nov 2025 20:14:18 +0000 Subject: [PATCH 3/4] media: uvcvideo: Announce deprecation intentions for UVCIOC_CTRL_MAP Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251117-uvcdynctrl-v1-3-aed70eadf3d8@chromium.org> References: <20251117-uvcdynctrl-v1-0-aed70eadf3d8@chromium.org> In-Reply-To: <20251117-uvcdynctrl-v1-0-aed70eadf3d8@chromium.org> To: Laurent Pinchart , Hans de Goede , Mauro Carvalho Chehab , Greg Kroah-Hartman Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Ricardo Ribalda X-Mailer: b4 0.14.2 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. Signed-off-by: Ricardo Ribalda Reviewed-by: Laurent Pinchart --- Documentation/userspace-api/media/drivers/uvcvideo.rst | 2 ++ drivers/media/usb/uvc/uvc_v4l2.c | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/Documentation/userspace-api/media/drivers/uvcvideo.rst b/Docum= entation/userspace-api/media/drivers/uvcvideo.rst index dbb30ad389ae4d53bc734b4269ebea20ecdd7535..b09d2f8ba66ecde67f1e35fd778= 58a505ad44eb1 100644 --- a/Documentation/userspace-api/media/drivers/uvcvideo.rst +++ b/Documentation/userspace-api/media/drivers/uvcvideo.rst @@ -109,6 +109,8 @@ IOCTL reference UVCIOC_CTRL_MAP - Map a UVC control to a V4L2 control ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ =20 +**This IOCTL is deprecated and will be eventually removed** + Argument: struct uvc_xu_control_mapping =20 **Description**: diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v= 4l2.c index 9e4a251eca88085a1b4e0e854370015855be92ee..03c64b5698bf4331fed8437fa6e= 9c726a07450bd 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -1044,6 +1044,8 @@ 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); =20 case UVCIOC_CTRL_QUERY: @@ -1158,6 +1160,8 @@ static long uvc_v4l2_compat_ioctl32(struct file *file, =20 switch (cmd) { case UVCIOC_CTRL_MAP32: + pr_warn_once("uvcvideo: " DEPRECATED + "UVCIOC_CTRL_MAP32 ioctl will be eventually removed.\n"); ret =3D uvc_v4l2_get_xu_mapping(&karg.xmap, up); if (ret) break; --=20 2.52.0.rc1.455.g30608eb744-goog