From patchwork Thu Aug 1 01:17:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13749441 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5BE21157476; Thu, 1 Aug 2024 01:18:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722475114; cv=none; b=qnmJn4smqWtuaCRBCRhSldzIDWx4Wv/TO90r3iVB9qCi09SnvSEm5HyuUdhlxiCEX8dHUlhFKFy5kD35x/RpE/1iKVGtJpVS0mhWyDyvL1A4ihppTPr3Mw8WcQll+/uaFPden4FE4h/aduky5tvIx/YQXr9rzpd46fZPvLJlgec= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722475114; c=relaxed/simple; bh=ytvl140rQrYUj6EO/9Ou/CdiiBdSdO4v3tDxNxfqVkI=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=VgJCL8iysymWhjZERsqwAJnVJvEly9cg1JwQKUhNnmGz/VJagUJ0n3VuRDYVjtTK0OxwhRll5d8xT9/RS6FVmBM610P7QI+wI964Bk7HtfRndNfo1OVSMd+7S2dhCO3KZr5i4BWEW+QiMIZjgF9136PzbaPn+aHIW3l99Pynw2g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=NzVjU/kh; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="NzVjU/kh" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 46VMRo4g028742; Thu, 1 Aug 2024 01:17:51 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to; s=qcppdkim1; bh=WaRl4gZ8HxDnORheHzotNsq/ I5DKVs0MHc2zmvjMi3g=; b=NzVjU/khG6bGEkZYTdAj9huGPa29y6BcCom6pHmn 5kZDMOVe0K24mfrwfeUcNqKB+/R7HvXrvlHWihAJF62n0gRqW8L4bbAV2QTjcGsf UZC/Ha8VU/oNuen6Pn7EOPboiD+p/peew4p/DADNbHgpway/a2DISNF00YIeMasj D109FvMDIdOkow0NxjAneRZbGZtJl7yC1UCPMfpl2Qo+isUPgST8K6GORvo8xYz0 MvxP5/nFHY8vqoC0sryPPkYgmQ/S4ou8OLKQQuhCMt7bfyO6iRTDagYoukYQuZeT 1s84jxGl+9lnomJKRsugt8CdlN+xFCgP0xna8kibx+l9Xg== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 40q232wceb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 01 Aug 2024 01:17:51 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA05.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 4711HotY030396 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 1 Aug 2024 01:17:50 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 15.2.1544.9; Wed, 31 Jul 2024 18:17:50 -0700 From: Wesley Cheng To: , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v24 32/34] ALSA: usb-audio: Check for support for requested audio format Date: Wed, 31 Jul 2024 18:17:28 -0700 Message-ID: <20240801011730.4797-33-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240801011730.4797-1-quic_wcheng@quicinc.com> References: <20240801011730.4797-1-quic_wcheng@quicinc.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) 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: zrWjxWis6KX3F_SA5EkDA6EqAPuWUWC1 X-Proofpoint-ORIG-GUID: zrWjxWis6KX3F_SA5EkDA6EqAPuWUWC1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-31_11,2024-07-31_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 malwarescore=0 bulkscore=0 priorityscore=1501 spamscore=0 adultscore=0 mlxscore=0 mlxlogscore=999 clxscore=1015 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408010005 Allow for checks on a specific USB audio device to see if a requested PCM format is supported. This is needed for support when playback is initiated by the ASoC USB backend path. Signed-off-by: Wesley Cheng --- sound/usb/card.c | 31 +++++++++++++++++++++++++++++++ sound/usb/card.h | 2 ++ 2 files changed, 33 insertions(+) diff --git a/sound/usb/card.c b/sound/usb/card.c index 70b7f22ff495..8c22f6bfdef2 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -176,6 +176,37 @@ void snd_usb_rediscover_devices(void) } EXPORT_SYMBOL_GPL(snd_usb_rediscover_devices); +/* + * 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; + struct snd_usb_stream *as; + + /* + * Register mutex is held when populating and clearing usb_chip + * array. + */ + guard(mutex)(®ister_mutex); + chip = usb_chip[card_idx]; + + if (chip && enable[card_idx]) { + list_for_each_entry(as, &chip->pcm_list, list) { + subs = &as->substream[direction]; + if (snd_usb_find_substream_format(subs, params)) + return as; + } + } + + 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 f0794aa06cd7..99d6a784eacf 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -220,4 +220,6 @@ int snd_usb_register_platform_ops(struct snd_usb_platform_ops *ops); int snd_usb_unregister_platform_ops(void); void snd_usb_rediscover_devices(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 */