From nobody Wed Nov 27 11:57:23 2024 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 BD6CF1BF805; Fri, 11 Oct 2024 00:07:38 +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=1728605261; cv=none; b=qJgGgWI1UDk73M8as6eY7ay0tLEBIAsS7IpW/iHiEeOozyakB0QytMAF8cN/fn+RNsaxo35FC1Il4nYMUtPS983NdLcULXm+ydm02+ybGrMnd+QVrdKzJIUHeTC4XhZ6VBcKavYjO58fsqCk6Wbiw5nhIACuI3fWFB+Y7O22dCU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728605261; c=relaxed/simple; bh=7x7bHut6vXqGEqUsc7FxVF/K8HdtteAuc38g9obK220=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=i6l4LQ7Ygm965bqjRnFYsrG+IA0XRNPRDZ/acQTH5LxiVyTlrreSdaXf6H78vRJHW55kjah170bi0JzMbZ89APr6Ky3TBPak+SAVlQutqQ7ADxobYchuwzWUM+jLfWUTy3v2oeT78IbBRegfabh0decKvtd/0zeMQ5NgHMMB3WI= 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=b96QuL+y; 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="b96QuL+y" 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 49ACEGIN026259; Fri, 11 Oct 2024 00:07:14 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=b96QuL+yeWS7JcRW nCYJatf/aPnS0tq8VtjDETNpzkthH9ba3V3bieJUdPUOG3O0lmQyRoMkkF3g5M49 OahY9j9ajJe1XX9rmwHjuUEyHDQa+HSSmsR+D+OiYcBngPuZrEH1ng7eMYGZo6xn fY3cJw3+5xqhFkZpkkyuPQ3WyYGan+0+seCI7JXXBMI2uU6ATrOKTPb7AGnRCMTV kkYydkALiRrY/krqEHiu1entKaIwhUf6HKyZVm62yJNTQlsCKZJqj+H6pt7u/R9a ab6zNpH2jJtCt0c3jbvspxmAwUxHFBuf32/Kqn3lPw+n86h8rHuQDRvF7pk4AGqv +TLEqg== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 425c8qydrg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Oct 2024 00:07:14 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 49B07D0u020098 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 11 Oct 2024 00:07:13 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; Thu, 10 Oct 2024 17:07:12 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , , Wesley Cheng Subject: [PATCH v28 18/33] ASoC: usb: Fetch ASoC card and pcm device information Date: Thu, 10 Oct 2024 17:06:21 -0700 Message-ID: <20241011000650.2585600-37-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241011000650.2585600-1-quic_wcheng@quicinc.com> References: <20241011000650.2585600-1-quic_wcheng@quicinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: BML9N831VBTUUsdaXtzCj5VrhmT-KNQw X-Proofpoint-ORIG-GUID: BML9N831VBTUUsdaXtzCj5VrhmT-KNQw 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 adultscore=0 lowpriorityscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 priorityscore=1501 mlxscore=0 spamscore=0 phishscore=0 clxscore=1015 bulkscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410100159 Content-Type: text/plain; charset="utf-8" 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; }; =20 @@ -61,6 +69,8 @@ int snd_soc_usb_setup_offload_jack(struct snd_soc_compone= nt *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); =20 struct snd_soc_usb *snd_soc_usb_allocate_port(struct snd_soc_component *co= mponent, void *data); @@ -109,6 +119,12 @@ static inline int snd_soc_usb_enable_offload_jack(stru= ct snd_soc_component *comp return 0; } =20 +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_com= ponent *component, } EXPORT_SYMBOL_GPL(snd_soc_usb_enable_offload_jack); =20 +/** + * 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 =3D -EINVAL; + + ctx =3D snd_soc_find_usb_ctx(dev); + if (!ctx) + return -ENODEV; + + mutex_lock(&ctx_mutex); + if (ctx && ctx->update_offload_route_info) + ret =3D 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