From nobody Mon Feb 9 23:15:41 2026 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 28C23C77B75 for ; Fri, 19 May 2023 09:32:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231583AbjESJcF (ORCPT ); Fri, 19 May 2023 05:32:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231475AbjESJbi (ORCPT ); Fri, 19 May 2023 05:31:38 -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 AC9AF1A6 for ; Fri, 19 May 2023 02:31:36 -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 6CE2222245; Fri, 19 May 2023 09:31:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1684488695; 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: in-reply-to:in-reply-to:references:references; bh=/vFcVb0n9Ba9H2O0vv9VgnhDswKpE1tKkK+15sbcO5g=; b=jYSAPYfU5amkk6Ym73ZUerWEceuFVsVcQDcr4ldsl06BXKXjqa8pGfDTWdENxVbz+J7Nwo O7KC+ASVreEBTRMw0MrgcVJAErEaFfXBf+SGMk0pzqJV/CNudvsC11raS9DlGWJk27pSXB 5vVDh9IzKJ2BV7rr554yR6XvPQh7IEk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1684488695; 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: in-reply-to:in-reply-to:references:references; bh=/vFcVb0n9Ba9H2O0vv9VgnhDswKpE1tKkK+15sbcO5g=; b=dwGJw1/q1m548OOzy6hIb0bHt2zR2+QF+hxjZUHsRgyemliMSXvueL6NtAbHeoGhzrzExr CiEy1BlHtHXfcrBw== 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 4CE1213A12; Fri, 19 May 2023 09:31:35 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id iAnpEfdBZ2RXJAAAMHmgww (envelope-from ); Fri, 19 May 2023 09:31:35 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH 09/36] ALSA: usb-audio: Get UMP EP name string from USB interface Date: Fri, 19 May 2023 11:30:47 +0200 Message-Id: <20230519093114.28813-10-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230519093114.28813-1-tiwai@suse.de> References: <20230519093114.28813-1-tiwai@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" USB descriptor may provide a nicer name for USB interface, and we may take it as the UMP Endpoint name. The UMP EP name is copied as the rawmidi name, too. Also, fill the UMP block product_id field from the iSerialNumber string of the USB device descriptor as a recommended unique id, too. Signed-off-by: Takashi Iwai --- sound/usb/midi2.c | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/sound/usb/midi2.c b/sound/usb/midi2.c index 7b4cfbaf2ec0..2ac3f96216bc 100644 --- a/sound/usb/midi2.c +++ b/sound/usb/midi2.c @@ -892,15 +892,39 @@ static int set_altset(struct snd_usb_midi2_interface = *umidi) umidi->hostif->desc.bAlternateSetting); } =20 +/* fill UMP Endpoint name string from USB descriptor */ +static void fill_ump_ep_name(struct snd_ump_endpoint *ump, + struct usb_device *dev, int id) +{ + usb_string(dev, id, ump->info.name, sizeof(ump->info.name)); +} + /* fill the fallback name string for each rawmidi instance */ static void set_fallback_rawmidi_names(struct snd_usb_midi2_interface *umi= di) { + struct usb_device *dev =3D umidi->chip->dev; struct snd_usb_midi2_ump *rmidi; + struct snd_ump_endpoint *ump; =20 list_for_each_entry(rmidi, &umidi->rawmidi_list, list) { - if (!*rmidi->ump->core.name) - sprintf(rmidi->ump->core.name, "USB MIDI %d", - rmidi->index); + ump =3D rmidi->ump; + /* fill UMP EP name from USB descriptors */ + if (!*ump->info.name && umidi->hostif->desc.iInterface) + fill_ump_ep_name(ump, dev, umidi->hostif->desc.iInterface); + else if (!*ump->info.name && dev->descriptor.iProduct) + fill_ump_ep_name(ump, dev, dev->descriptor.iProduct); + /* fill fallback name */ + if (!*ump->info.name) + sprintf(ump->info.name, "USB MIDI %d", rmidi->index); + /* copy as rawmidi name if not set */ + if (!*ump->core.name) + strscpy(ump->core.name, ump->info.name, + sizeof(ump->core.name)); + /* use serial number string as unique UMP product id */ + if (!*ump->info.product_id && dev->descriptor.iSerialNumber) + usb_string(dev, dev->descriptor.iSerialNumber, + ump->info.product_id, + sizeof(ump->info.product_id)); } } =20 --=20 2.35.3