From patchwork Wed Mar 8 23:57:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 661010 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 3E318C761A6 for ; Wed, 8 Mar 2023 23:58:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230091AbjCHX6i (ORCPT ); Wed, 8 Mar 2023 18:58:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35808 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229806AbjCHX6b (ORCPT ); Wed, 8 Mar 2023 18:58:31 -0500 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE9727A930; Wed, 8 Mar 2023 15:58:29 -0800 (PST) Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 328JngMB001661; Wed, 8 Mar 2023 23:58:10 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=92xFR0mEY2s8OZh1Vn+jIRwTqBv0FTbWBu70gY2rTEE=; b=MjPjvphgDy7Ln/+E6xC/lbCNQYNpGq41qOC3/MIDt6ClaJoZzfn7PLD8HVBPUxbHCM6+ D/J/OwPu8ss3X6070ip9CvtX/GldHweG5Fcys5pOXJHV2ByMaskSroo+uJjhs9TnW+me Cw1BuhR85Of7LbIaR81BDo4w+iqGAvszML7RM/jg48zJtG2U6AwORxTKHg4b+mVPJLR1 7CdLUiHxqDI1LWOVQ89VUELPHDK0MH6doDpdx7NVJA7LYFJ6/qFBwL1YVYthGWymdxwJ VfwnRcHkdTbhXGOvbKxYtBbkth/5ExBQPMRP2BXvGDnLEFIFnmu6zRQGXt0eoTzCbpbN VA== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3p6wcmh3e0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 08 Mar 2023 23:58:10 +0000 Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 328Nw9Ro015013 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 8 Mar 2023 23:58:09 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 15.2.986.41; Wed, 8 Mar 2023 15:58:09 -0800 From: Wesley Cheng To: , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v3 16/28] sound: usb: card: Check for support for requested audio format Date: Wed, 8 Mar 2023 15:57:39 -0800 Message-ID: <20230308235751.495-17-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230308235751.495-1-quic_wcheng@quicinc.com> References: <20230308235751.495-1-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-GUID: RIcfykULCY_HFdmjdbNXf2jJ3AsVTBFP X-Proofpoint-ORIG-GUID: RIcfykULCY_HFdmjdbNXf2jJ3AsVTBFP X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-08_15,2023-03-08_03,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 spamscore=0 adultscore=0 bulkscore=0 mlxlogscore=999 clxscore=1015 priorityscore=1501 lowpriorityscore=0 impostorscore=0 suspectscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2303080200 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 | 28 ++++++++++++++++++++++++++++ sound/usb/card.h | 8 ++++++++ 2 files changed, 36 insertions(+) diff --git a/sound/usb/card.c b/sound/usb/card.c index e5d5c0f04c85..e51461ac33cd 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -142,6 +142,34 @@ int snd_usb_unregister_platform_ops(void) } EXPORT_SYMBOL_GPL(snd_usb_unregister_platform_ops); +struct snd_usb_stream *snd_usb_find_suppported_substream(int card_idx, + struct snd_pcm_hw_params *params, int direction) +{ + struct snd_usb_audio *chip = usb_chip[card_idx]; + struct snd_usb_substream *subs = NULL; + struct snd_usb_stream *as; + const struct audioformat *fmt; + + if (!chip) + return NULL; + + mutex_lock(&chip->mutex); + if (enable[card_idx]) { + list_for_each_entry(as, &chip->pcm_list, list) { + subs = &as->substream[direction]; + fmt = find_substream_format(subs, params); + if (fmt) { + mutex_unlock(&chip->mutex); + return as; + } + } + } + mutex_unlock(&chip->mutex); + + return NULL; +} +EXPORT_SYMBOL_GPL(snd_usb_find_suppported_substream); + /* * disconnect streams * called from usb_audio_disconnect() diff --git a/sound/usb/card.h b/sound/usb/card.h index 94c3ae7bb4a5..4535b48edd1b 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -216,6 +216,8 @@ struct snd_usb_platform_ops { #if IS_ENABLED(CONFIG_SND_USB_AUDIO) int snd_usb_register_platform_ops(struct snd_usb_platform_ops *ops); int snd_usb_unregister_platform_ops(void); +struct snd_usb_stream *snd_usb_find_suppported_substream(int card_idx, + struct snd_pcm_hw_params *params, int direction); #else int snd_usb_register_platform_ops(struct snd_usb_platform_ops *ops) { @@ -226,5 +228,11 @@ int snd_usb_unregister_platform_ops(void) { return -EOPNOTSUPP; } + +struct snd_usb_stream *snd_usb_find_suppported_substream(int card_idx, + struct snd_pcm_hw_params *params, int direction) +{ + return NULL; +} #endif /* IS_ENABLED(CONFIG_SND_USB_AUDIO) */ #endif /* __USBAUDIO_CARD_H */