From patchwork Mon Jan 30 14:26:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Scally X-Patchwork-Id: 13121256 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40365C54EAA for ; Mon, 30 Jan 2023 14:28:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236658AbjA3O2i (ORCPT ); Mon, 30 Jan 2023 09:28:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49596 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236379AbjA3O2V (ORCPT ); Mon, 30 Jan 2023 09:28:21 -0500 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7FACF43912 for ; Mon, 30 Jan 2023 06:26:56 -0800 (PST) Received: from mail.ideasonboard.com (cpc141996-chfd3-2-0-cust928.12-3.cable.virginm.net [86.13.91.161]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 6CDFE8B8; Mon, 30 Jan 2023 15:26:53 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1675088813; bh=bX5XpEx1smBlBqdcviV1kE8PG3WObestHTbrbllCSBg=; h=From:To:Cc:Subject:Date:From; b=UYw7XkdRyH0JjnLE/Gr1mKJZf+TbaZpxyufg5mC17wsMn5+SQ60Z0l7oxx6pxcM+v YkMtNsi0nT6msC3H99P9IHoKl9EdwqxpPORZuMoyf5jsf5xRrC0We7k8DVvsiPWr3c X6UVaqE3jcKg7LFkaP+L+dtW49P04CooyRcAtnco= From: Daniel Scally To: linux-usb@vger.kernel.org Cc: laurent.pinchart@ideasonboard.com, gregkh@linuxfoundation.org, w36195@motorola.com, m.grzeschik@pengutronix.de, kieran.bingham@ideasonboard.com, torleiv@huddly.com, Daniel Scally Subject: [PATCH v3 0/7] UVC Gadget: Extend color matching support Date: Mon, 30 Jan 2023 14:26:32 +0000 Message-Id: <20230130142639.217885-1-dan.scally@ideasonboard.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The current UVC gadget implementation hardcodes a single color matching descriptor and includes it in the payload of USB descriptors a single time following all the format and frame descriptors. This is inflexible, and additionally applies only to the _last_ format in the array of descriptors. This series extends the support such that the default descriptor can be amended and is included once-per-format instead of once-only, it then adds the ability to create new color matching descriptors and associate them with particular formats. The default color matching descriptor is retained and used where the user does not link a new color matching descriptor to the format, so the default interaction with userspace is unchanged from the current implementation. Daniel Scally (7): usb: gadget: usb: Remove "default" from color matching attributes usb: uvc: Enumerate valid values for color matching usb: gadget: uvc: Add struct for color matching in configs usb: gadget: uvc: Copy color matching descriptor for each frame usb: gadget: uvc: Remove the hardcoded default color matching usb: gadget: uvc: Make color matching attributes read/write usb: gadget: uvc: Allow creating new color matching descriptors .../ABI/testing/configfs-usb-gadget-uvc | 19 +- drivers/usb/gadget/function/f_uvc.c | 9 - drivers/usb/gadget/function/u_uvc.h | 1 - drivers/usb/gadget/function/uvc_configfs.c | 282 ++++++++++++++++-- drivers/usb/gadget/function/uvc_configfs.h | 22 +- include/uapi/linux/usb/video.h | 30 ++ 6 files changed, 315 insertions(+), 48 deletions(-)