From patchwork Fri Dec 23 23:31:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 637241 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 32418C4708D for ; Fri, 23 Dec 2022 23:33:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233282AbiLWXdZ (ORCPT ); Fri, 23 Dec 2022 18:33:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231757AbiLWXdN (ORCPT ); Fri, 23 Dec 2022 18:33:13 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD98C10FE1; Fri, 23 Dec 2022 15:33:12 -0800 (PST) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2BNNRW5f026949; Fri, 23 Dec 2022 23:32:48 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=hTI5FHC1YAemhozMegfqvLXGLlmKwd7KUrOXylR/oc4=; b=Tv9gXXHzolqDQ+A3DaaETNrc301xcPACjVAHXzaGyvzkTbXvqDVw/jShEUQuMdJK371N +JJ3m4xA9tYnrEyF1UkuZxUtLdgHul9irhsasJkuuBnCFDorcKI+FzzfjMYYOfWgUQd1 2NDunGRYBdHgV6gTmBjtJ3nEgHQedwrMcct+LN3thBSvfpzD1EUy6aB8YJH3zRqRO45w gUGO12CF/NXsLxh7xbuBqWHfsV/iAhOHJDw5TtNiK+RmdVlATpGaY49z7z8dc0GnrPNU SjdLgoXjOAnrNdg30eGvXb+FLUuMXjNTU3rv4mNHokVVh000eLVuyt5WOXFHtq5FNUIe +w== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3mm2brx5g8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 23 Dec 2022 23:32:47 +0000 Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 2BNNWkmd001854 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 23 Dec 2022 23:32:46 GMT Received: from hu-wcheng-lv.qualcomm.com (10.49.16.6) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Fri, 23 Dec 2022 15:32:46 -0800 From: Wesley Cheng To: , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [RFC PATCH 10/14] sound: usb: card: Check for support for requested audio format Date: Fri, 23 Dec 2022 15:31:56 -0800 Message-ID: <20221223233200.26089-11-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221223233200.26089-1-quic_wcheng@quicinc.com> References: <20221223233200.26089-1-quic_wcheng@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: hEsPdu6rderHJlTTpN2IAY96ibDhSSSt X-Proofpoint-GUID: hEsPdu6rderHJlTTpN2IAY96ibDhSSSt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-23_08,2022-12-23_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 adultscore=0 priorityscore=1501 clxscore=1015 mlxscore=0 lowpriorityscore=0 malwarescore=0 spamscore=0 suspectscore=0 phishscore=0 bulkscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2212230197 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Allow for checks on a specific USB audio device to see if a requested PCM format is supported. This is needed for support for when playback is initiated by the ASoC USB backend path. Signed-off-by: Wesley Cheng --- sound/usb/card.c | 19 +++++++++++++++++++ sound/usb/card.h | 3 +++ 2 files changed, 22 insertions(+) diff --git a/sound/usb/card.c b/sound/usb/card.c index 396e5a34e23b..9b8d2ed308c8 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -133,6 +133,25 @@ int snd_usb_unregister_vendor_ops(void) } EXPORT_SYMBOL_GPL(snd_usb_unregister_vendor_ops); +struct snd_usb_stream *snd_usb_find_suppported_substream(int card_idx, + struct snd_pcm_hw_params *params, int direction) +{ + struct snd_usb_stream *as; + struct snd_usb_substream *subs = NULL; + const struct audioformat *fmt; + + if (usb_chip[card_idx] && enable[card_idx]) { + list_for_each_entry(as, &usb_chip[card_idx]->pcm_list, list) { + subs = &as->substream[direction]; + fmt = find_substream_format(subs, params); + if (fmt) + return as; + } + } + + return 0; +} + /* * disconnect streams * called from usb_audio_disconnect() diff --git a/sound/usb/card.h b/sound/usb/card.h index a785bb256b0d..d4936b6054fc 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -213,4 +213,7 @@ struct snd_usb_vendor_ops { int snd_usb_register_vendor_ops(struct snd_usb_vendor_ops *ops); int snd_usb_unregister_vendor_ops(void); + +struct snd_usb_stream *snd_usb_find_suppported_substream(int card_idx, + struct snd_pcm_hw_params *params, int direction); #endif /* __USBAUDIO_CARD_H */