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[34.88.38.80]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5969dbd15a1sm65790e87.98.2025.11.19.11.37.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Nov 2025 11:37:14 -0800 (PST) From: Ricardo Ribalda Date: Wed, 19 Nov 2025 19:37:13 +0000 Subject: [PATCH v2 4/6] media: uvcvideo: Document how to format GUIDs 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: <20251119-uvcdynctrl-v2-4-0359ffb98c9e@chromium.org> References: <20251119-uvcdynctrl-v2-0-0359ffb98c9e@chromium.org> In-Reply-To: <20251119-uvcdynctrl-v2-0-0359ffb98c9e@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 Manual formatting the GUIDs can lead to errors, document a programmatically way to format the GUIDs from lsusb into something tha the driver can use. Signed-off-by: Ricardo Ribalda --- include/linux/usb/uvc.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/usb/uvc.h b/include/linux/usb/uvc.h index b939a01da11466747249c64c72a3ea40cd364a59..dea23aabbad48270c807463c1a7= e1c0d1b79fc1f 100644 --- a/include/linux/usb/uvc.h +++ b/include/linux/usb/uvc.h @@ -10,6 +10,14 @@ =20 /* ------------------------------------------------------------------------ * GUIDs + * + * The GUID returned by lsusb can be converted to this format with the + * following python snippet: + * + * import uuid + * id =3D "{01234567-89ab-cdef-0123-456789abcdef}" + * le =3D uuid.UUID(id).bytes_le + * print("{" + ", ".join([f"0x{b:02x}" for b in le]) + "}") */ #define UVC_GUID_UVC_CAMERA \ {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ --=20 2.52.0.rc1.455.g30608eb744-goog