From patchwork Tue Oct 15 21:29:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13837262 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 smtp.subspace.kernel.org (Postfix) with ESMTPS id A97DB1FDFAA; Tue, 15 Oct 2024 21:30:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729027813; cv=none; b=taNuOlO41yRaIMyUEdTrbJ/coVQd3cX6NsTd+Jonz2Iju0tjEDeBCuasDr2xgSWJCxuC73Xa/8GF0wh6vuAOdauSMf67KM642gYNE0a6TmOqulBPCvfPPT7vj9NPoh+Jm8etdAGmosbCZFr9qbIOMuw3b2IVWA+e8MSIH4Cv+iA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729027813; c=relaxed/simple; bh=7x7bHut6vXqGEqUsc7FxVF/K8HdtteAuc38g9obK220=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tp7S2I2smdSsDQNxb4Pr3jMTlone/NcP/5fDhFFV6Vky4gluHgX31AydvPC1jW8J6VNtavEA6eClPggzlgRPAm/WFa15ERhrXKmqeUCollwHSAIS0pn0SQmwhGfXrQlMhMng8BQArBMQKwGi996W9aGi6yyRhdNNO1jy48LIoyg= 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=iQIZhD69; arc=none smtp.client-ip=205.220.180.131 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="iQIZhD69" Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49FIJdME030758; Tue, 15 Oct 2024 21:29:33 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= 5ZjvTDYWtRTttajXDi0kuopV3pbkb4YUrXwVSgs6C7Q=; b=iQIZhD691HrMYq5/ pqUwDVAyIJ5fSUVM788C2KGvzYLZOQB5wpRlJePIjXm5CVeLv4BLJ5rD1DPYahBO +x/lncVzPl5gyH1BsJFtNWXYrDygWM/GgtI3g3EDkj19yHdZIqKbqQEDLnDYjFbt O3iBZD3zbXHiFiT1ZGdhGRflwitHT2s8tyuZnelSHSKbU5geX1UPhjZ5UWs2h8HA 4ZfWIFIvCG4x2lZpWELhwcNq8t0TZCOt/SQga9oE6QdFRri0DXq5GGH5sbHowEOr eWZnf0RLvmDbvMYzpKDqqKci99my5JU/CpYPiPXhx24t4J1PHLlEY/dKsWC4KlKn F8PQdQ== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 429mjy283t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 15 Oct 2024 21:29:33 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA05.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 49FLTW3d026440 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 15 Oct 2024 21:29:32 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; Tue, 15 Oct 2024 14:29:31 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , , Wesley Cheng Subject: [PATCH v29 18/33] ASoC: usb: Fetch ASoC card and pcm device information Date: Tue, 15 Oct 2024 14:29:00 -0700 Message-ID: <20241015212915.1206789-19-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241015212915.1206789-1-quic_wcheng@quicinc.com> References: <20241015212915.1206789-1-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: JZcaDIJDQpOzcBqc8Q3wuSXyFJhcskTO X-Proofpoint-ORIG-GUID: JZcaDIJDQpOzcBqc8Q3wuSXyFJhcskTO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 phishscore=0 mlxscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 clxscore=1015 spamscore=0 suspectscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410150143 USB SND needs to know how the USB offload path is being routed. This would allow for applications to open the corresponding sound card and pcm device when it wants to take the audio offload path. This callback should return the mapped indexes based on the USB SND device information. Reviewed-by: Pierre-Louis Bossart Signed-off-by: Wesley Cheng --- include/sound/soc-usb.h | 16 ++++++++++++++++ sound/soc/soc-usb.c | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 50 insertions(+) diff --git a/include/sound/soc-usb.h b/include/sound/soc-usb.h index 587ea07a8cf5..c3d3e8d62ac5 100644 --- a/include/sound/soc-usb.h +++ b/include/sound/soc-usb.h @@ -36,6 +36,11 @@ struct snd_soc_usb_device { * @list - list head for SND SOC struct list * @component - reference to ASoC component * @connection_status_cb - callback to notify connection events + * @update_offload_route_info - callback to fetch mapped ASoC card and pcm + * device pair. This is unrelated to the concept + * of DAPM route. The "route" argument carries + * an array used for a kcontrol output and should + * contain two integers, card and pcm device index * @priv_data - driver data **/ struct snd_soc_usb { @@ -44,6 +49,9 @@ struct snd_soc_usb { int (*connection_status_cb)(struct snd_soc_usb *usb, struct snd_soc_usb_device *sdev, bool connected); + int (*update_offload_route_info)(struct snd_soc_component *component, + int card, int pcm, int direction, + long *route); void *priv_data; }; @@ -61,6 +69,8 @@ int snd_soc_usb_setup_offload_jack(struct snd_soc_component *component, int snd_soc_usb_disable_offload_jack(struct snd_soc_component *component); int snd_soc_usb_enable_offload_jack(struct snd_soc_component *component, struct snd_soc_jack *jack); +int snd_soc_usb_update_offload_route(struct device *dev, int card, int pcm, + int direction, long *route); struct snd_soc_usb *snd_soc_usb_allocate_port(struct snd_soc_component *component, void *data); @@ -109,6 +119,12 @@ static inline int snd_soc_usb_enable_offload_jack(struct snd_soc_component *comp return 0; } +static int snd_soc_usb_update_offload_route(struct device *dev, int card, int pcm, + int direction, long *route) +{ + return -ENODEV; +} + static inline struct snd_soc_usb * snd_soc_usb_allocate_port(struct snd_soc_component *component, void *data) { diff --git a/sound/soc/soc-usb.c b/sound/soc/soc-usb.c index ab914878e101..e56826f1df71 100644 --- a/sound/soc/soc-usb.c +++ b/sound/soc/soc-usb.c @@ -145,6 +145,40 @@ int snd_soc_usb_enable_offload_jack(struct snd_soc_component *component, } EXPORT_SYMBOL_GPL(snd_soc_usb_enable_offload_jack); +/** + * snd_soc_usb_update_offload_route - Find active USB offload path + * @dev - USB device to get offload status + * @card - USB card index + * @pcm - USB PCM device index + * @direction - playback or capture direction + * @route - pointer to route output array + * + * Fetch the current status for the USB SND card and PCM device indexes + * specified. The "route" argument should be an array of integers being + * used for a kcontrol output. The first element should have the selected + * card index, and the second element should have the selected pcm device + * index. + */ +int snd_soc_usb_update_offload_route(struct device *dev, int card, int pcm, + int direction, long *route) +{ + struct snd_soc_usb *ctx; + int ret = -EINVAL; + + ctx = snd_soc_find_usb_ctx(dev); + if (!ctx) + return -ENODEV; + + mutex_lock(&ctx_mutex); + if (ctx && ctx->update_offload_route_info) + ret = ctx->update_offload_route_info(ctx->component, card, pcm, + direction, route); + mutex_unlock(&ctx_mutex); + + return ret; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_update_offload_route); + /** * snd_soc_usb_find_priv_data() - Retrieve private data stored * @usbdev: device reference