From patchwork Thu Sep 21 21:48:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13394800 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1C214E7D0AB for ; Thu, 21 Sep 2023 22:10:04 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id C1F59EE4; Fri, 22 Sep 2023 00:09:11 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz C1F59EE4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1695334201; bh=3uJmMsmNQkrTFe1eaz2bLKM/pkIkIb4c5v7GMSYFzY8=; h=From:To:CC:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=i1Cl/6/FD/G6QcdoAMyqn4JwGV3HHKRgrFCJCOIlIkLnwj6pJYBE+WxWDtGbUVe3b WVxdNX54flwDehqyjKbP3cX28Ki5DpauqsliVjEIqNIZeu/TkKPwzbAeTnQ3J1ka6U 3KXWyVRHGbv/rYCbUi69wMmtC2cHMUlFSIMXNU94= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 59E99F805C5; Fri, 22 Sep 2023 00:08:48 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 9AA5CF80589; Fri, 22 Sep 2023 00:08:47 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id D17C1F80494; Thu, 21 Sep 2023 23:55:27 +0200 (CEST) Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 04770F80564 for ; Thu, 21 Sep 2023 23:49:08 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 04770F80564 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=quicinc.com header.i=@quicinc.com header.a=rsa-sha256 header.s=qcppdkim1 header.b=Qh8jXbPl 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 38LKs3lq027021; Thu, 21 Sep 2023 21:49:00 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=dH3EZ3Jzl3/12IrSu0jI4GH3HGQtq5+vzpa4GA8M+f0=; b=Qh8jXbPlOYiKd08ahmmzOR6cuBSdT3UJGWF3A0fkBhBXRTU4/JPpyTJpa1fwYhAGKudV mw4eozX9wR56/Sy8TvCsACSCNmS39hJlSQjW5ssYd9LcT2U7QgLKtdD27Iqgh1IrrfQu 3Kg9ZqWw7QWmVgO4V6TwJEOR3mOuJAza3ydIL5TQCUemCbmlFDdzeY8mJU6UqZGrofe4 hwyhHCR+9Zdgk5hLcVSLPyO5ynlaDMGncBZag3jrdBB6PjqLWaKTP1g06Rga3BJFko1V FJq3MCD6knqphrpH+pA1xbMODjINxvvnG9Cf7FJea3af9x8YDaB9D6mYD2BRx8Ay0c+Q xA== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3t8uf2g9pk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 21 Sep 2023 21:49:00 +0000 Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 38LLmxXk031083 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 21 Sep 2023 21:48:59 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 15.2.1118.36; Thu, 21 Sep 2023 14:48:58 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , Wesley Cheng Subject: [PATCH v7 19/33] ALSA: usb-audio: Check for support for requested audio format Date: Thu, 21 Sep 2023 14:48:29 -0700 Message-ID: <20230921214843.18450-20-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230921214843.18450-1-quic_wcheng@quicinc.com> References: <20230921214843.18450-1-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: 2kToF6aRGq---6me_PG0So9suarmzHKO X-Proofpoint-ORIG-GUID: 2kToF6aRGq---6me_PG0So9suarmzHKO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-09-21_18,2023-09-21_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 malwarescore=0 adultscore=0 mlxlogscore=999 mlxscore=0 impostorscore=0 clxscore=1015 suspectscore=0 phishscore=0 bulkscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2309180000 definitions=main-2309210188 Message-ID-Hash: X6CJ633QJPPGYMRKL2ICXXE6LHW34PQH X-Message-ID-Hash: X6CJ633QJPPGYMRKL2ICXXE6LHW34PQH X-MailFrom: quic_wcheng@quicinc.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: 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 | 40 ++++++++++++++++++++++++++++++++++++++++ sound/usb/card.h | 11 +++++++++++ 2 files changed, 51 insertions(+) diff --git a/sound/usb/card.c b/sound/usb/card.c index c0b312e264bf..88f431917c15 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -162,6 +162,46 @@ int snd_usb_unregister_platform_ops(void) } EXPORT_SYMBOL_GPL(snd_usb_unregister_platform_ops); +/* + * Checks to see if requested audio profile, i.e sample rate, # of + * channels, etc... is supported by the substream associated to the + * USB audio device. + */ +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; + struct snd_usb_substream *subs = NULL; + struct snd_usb_stream *as; + const struct audioformat *fmt; + + /* + * Register mutex is held when populating and clearing usb_chip + * array. + */ + mutex_lock(®ister_mutex); + chip = usb_chip[card_idx]; + if (!chip) { + mutex_unlock(®ister_mutex); + return NULL; + } + + if (enable[card_idx]) { + list_for_each_entry(as, &chip->pcm_list, list) { + subs = &as->substream[direction]; + fmt = snd_usb_find_substream_format(subs, params); + if (fmt) { + mutex_unlock(®ister_mutex); + return as; + } + } + } + mutex_unlock(®ister_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 2884912adc96..e26292363cf0 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -216,4 +216,15 @@ struct snd_usb_platform_ops { int snd_usb_register_platform_ops(struct snd_usb_platform_ops *ops); int snd_usb_unregister_platform_ops(void); + +#if IS_ENABLED(CONFIG_SND_USB_AUDIO) +struct snd_usb_stream *snd_usb_find_suppported_substream(int card_idx, + struct snd_pcm_hw_params *params, int direction); +#else +static 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 */