From nobody Mon Feb 9 13:35:42 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 41A20C77B75 for ; Tue, 23 May 2023 07:56:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235550AbjEWH4Q (ORCPT ); Tue, 23 May 2023 03:56:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236042AbjEWHzN (ORCPT ); Tue, 23 May 2023 03:55:13 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55A28E79 for ; Tue, 23 May 2023 00:54:50 -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 E323A218F6; Tue, 23 May 2023 07:54:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1684828443; 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=mpcAAE3E4+YS/NXc11uNo67NAO9/YDf8hhSiZWIao78=; b=aPH7OmYKZu8BQQkdToCuu48NDoKzcKQjlgkw3HNaUK7AIxeKSliXjH9ehE1zUkm/o5pRek PlJQTagEc4URt3nlPdwV59STvRB4xeQ/tzIMQohGU1ZpM6SdbEHOo737PZAGFAm2Aq7Hfq wJB1s6cuOJ8m9CvFE0lJXTBGi3oI8Zk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1684828443; 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=mpcAAE3E4+YS/NXc11uNo67NAO9/YDf8hhSiZWIao78=; b=c6k2oPCvgn3Eye7b7y7Caz/kTQVqr43clil4WgHn17wzsGG5Q0mqV/Ae3fFVHYi6MpWdxr occ8/bQsThCrkQCw== 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 8285113A24; Tue, 23 May 2023 07:54:03 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id mLFHHhtxbGT4KgAAMHmgww (envelope-from ); Tue, 23 May 2023 07:54:03 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH v2 05/37] ALSA: ump: Add ioctls to inquiry UMP EP and Block info via control API Date: Tue, 23 May 2023 09:53:26 +0200 Message-Id: <20230523075358.9672-6-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230523075358.9672-1-tiwai@suse.de> References: <20230523075358.9672-1-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" It'd be convenient to have ioctls to inquiry the UMP Endpoint and UMP Block information directly via the control API without opening the rawmidi interface, just like SNDRV_CTL_IOCTL_RAWMIDI_INFO. This patch extends the rawmidi ioctl handler to support those; new ioctls, SNDRV_CTL_IOCTL_UMP_ENDPOINT_INFO and SNDRV_CTL_IOCTL_UMP_BLOCK_INFO, return the snd_ump_endpoint and snd_ump_block data that is specified by the device field, respectively. Suggested-by: Jaroslav Kysela Reviewed-by: Jaroslav Kysela Signed-off-by: Takashi Iwai --- include/uapi/sound/asound.h | 2 ++ sound/core/rawmidi.c | 26 ++++++++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h index 1e4a21036109..5c5f41dd4001 100644 --- a/include/uapi/sound/asound.h +++ b/include/uapi/sound/asound.h @@ -1178,6 +1178,8 @@ struct snd_ctl_tlv { #define SNDRV_CTL_IOCTL_RAWMIDI_INFO _IOWR('U', 0x41, struct snd_rawmidi_i= nfo) #define SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE _IOW('U', 0x42, int) #define SNDRV_CTL_IOCTL_UMP_NEXT_DEVICE _IOWR('U', 0x43, int) +#define SNDRV_CTL_IOCTL_UMP_ENDPOINT_INFO _IOWR('U', 0x44, struct snd_ump_= endpoint_info) +#define SNDRV_CTL_IOCTL_UMP_BLOCK_INFO _IOWR('U', 0x45, struct snd_ump_blo= ck_info) #define SNDRV_CTL_IOCTL_POWER _IOWR('U', 0xd0, int) #define SNDRV_CTL_IOCTL_POWER_STATE _IOR('U', 0xd1, int) =20 diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index 9936ed282b85..ffb5b58105f4 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -1043,6 +1043,28 @@ static int snd_rawmidi_next_device(struct snd_card *= card, int __user *argp, return 0; } =20 +#if IS_ENABLED(CONFIG_SND_UMP) +/* inquiry of UMP endpoint and block info via control API */ +static int snd_rawmidi_call_ump_ioctl(struct snd_card *card, int cmd, + void __user *argp) +{ + struct snd_ump_endpoint_info __user *info =3D argp; + struct snd_rawmidi *rmidi; + int device, ret; + + if (get_user(device, &info->device)) + return -EFAULT; + mutex_lock(®ister_mutex); + rmidi =3D snd_rawmidi_search(card, device); + if (rmidi && rmidi->ops && rmidi->ops->ioctl) + ret =3D rmidi->ops->ioctl(rmidi, cmd, argp); + else + ret =3D -ENXIO; + mutex_unlock(®ister_mutex); + return ret; +} +#endif + static int snd_rawmidi_control_ioctl(struct snd_card *card, struct snd_ctl_file *control, unsigned int cmd, @@ -1056,6 +1078,10 @@ static int snd_rawmidi_control_ioctl(struct snd_card= *card, #if IS_ENABLED(CONFIG_SND_UMP) case SNDRV_CTL_IOCTL_UMP_NEXT_DEVICE: return snd_rawmidi_next_device(card, argp, true); + case SNDRV_CTL_IOCTL_UMP_ENDPOINT_INFO: + return snd_rawmidi_call_ump_ioctl(card, SNDRV_UMP_IOCTL_ENDPOINT_INFO, a= rgp); + case SNDRV_CTL_IOCTL_UMP_BLOCK_INFO: + return snd_rawmidi_call_ump_ioctl(card, SNDRV_UMP_IOCTL_BLOCK_INFO, argp= ); #endif case SNDRV_CTL_IOCTL_RAWMIDI_PREFER_SUBDEVICE: { --=20 2.35.3