From patchwork Tue Jul 25 06:21:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13325916 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 6822BEB64DD for ; Tue, 25 Jul 2023 06:22:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230456AbjGYGWP (ORCPT ); Tue, 25 Jul 2023 02:22:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43022 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229499AbjGYGWO (ORCPT ); Tue, 25 Jul 2023 02:22:14 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DACF6CF; Mon, 24 Jul 2023 23:22:12 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 7BD8622489; Tue, 25 Jul 2023 06:22:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1690266131; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=QaBNnA/8gpFgghYhdk/w9mp+r6Zv7/AG4oLP8HE40AM=; b=Ic5ArVRfMJt9KorJR2SkOWpNNCrHNKFoYKaScO9d6EfjxaUkX72WbT49kFKNRBR0XRHsMp 66/It/FuaFUz7L3A3lEChgTyN3Y277znunXyiwzOU5H9syyxzUXjMr4k3kNBQtDD0D61Ef 5z+TarS7jEU63qeULLNxd5rc9LxLTS4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1690266131; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=QaBNnA/8gpFgghYhdk/w9mp+r6Zv7/AG4oLP8HE40AM=; b=ms3T9/AYc+/7B94Yh1vrliH7UzeI2zke2rTBcTkHYIlA9pdVzgapaaK8x+UhR5zy+KpHWm 5np1l1KXJpyIpSCA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 4997213342; Tue, 25 Jul 2023 06:22:11 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id NiT2EBNqv2S0dQAAMHmgww (envelope-from ); Tue, 25 Jul 2023 06:22:11 +0000 From: Takashi Iwai To: Greg Kroah-Hartman Cc: alsa-devel@alsa-project.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/7] usb: Add USB MIDI 2.0 Gadget Function Driver Date: Tue, 25 Jul 2023 08:21:59 +0200 Message-Id: <20230725062206.9674-1-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Hi, This is a patch set for adding a USB gadget function driver for USB MIDI 2.0 interface. The MIDI 2.0 support in the host side was already enabled since 6.5 kernel in snd-usb-audio driver. Now, this provides a similar gadget functionality using the existing ALSA UMP helper functions. The gadget driver provides both MIDI 2.0 and MIDI 1.0 fallback interfaces with one or more loopback UMP rawmidi devices. The configfs implementation is flexible enough to allow users to set up multiple UMP Endpoints and Function Blocks. The first patch adds the bare f_midi2 driver without configfs support, followed by the configfs support, MIDI 1.0 interface support and a few other extensions and documentation. Takashi === Takashi Iwai (7): usb: gadget: Add support for USB MIDI 2.0 function driver usb: gadget: midi2: Add configfs support usb: gadget: midi2: Dynamically create MIDI 1.0 altset descriptors usb: gadget: midi2: MIDI 1.0 interface (altset 0) support usb: gadget: midi2: Add testing documentation usb: gadget: midi2: Add "Operation Mode" control usb: gadget: midi2: More flexible MIDI 1.0 configuration .../ABI/testing/configfs-usb-gadget-midi2 | 54 + Documentation/usb/gadget-testing.rst | 154 + drivers/usb/gadget/Kconfig | 18 + drivers/usb/gadget/function/Makefile | 2 + drivers/usb/gadget/function/f_midi2.c | 2883 +++++++++++++++++ drivers/usb/gadget/function/u_midi2.h | 81 + 6 files changed, 3192 insertions(+) create mode 100644 Documentation/ABI/testing/configfs-usb-gadget-midi2 create mode 100644 drivers/usb/gadget/function/f_midi2.c create mode 100644 drivers/usb/gadget/function/u_midi2.h