From nobody Thu Nov 14 16:27:05 2024 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 53DA720969B; Wed, 6 Nov 2024 19:34:52 +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=1730921694; cv=none; b=mYujmr5OfIk+BLDME+3DcknqkvDO09mgWoqRvAkUBNgCtAyYQkVhGQyBbbf5Lys1y1+DXj6xYA2rRavFnrF40xFWoEJCDeeUS0+LawgICLNg/5oyr0aBGuiDjZ6Z9hu1O7eOZCAmKELxsQNjTnakYyF0jGUPeInSZot3IYFl86E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730921694; c=relaxed/simple; bh=7x7bHut6vXqGEqUsc7FxVF/K8HdtteAuc38g9obK220=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=A+6QAOQF+B4fkAnYA4FXtbHOzxmmxSh9hKA0nKKH7TwGLGUOcoDUxglITEfLarFu3xfaOU82Vd2m1yu9GZybx0NKAMs1ik/Esoa2aCxKvjHi4KcvNU/3nBS8PlwwC32+4Q7nzeBVrz8enEwt9SXlhhHyt6Kwy/DgiB+CcK59IJo= 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=c1awKz5M; 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="c1awKz5M" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4A69plfn015613; Wed, 6 Nov 2024 19:34:34 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=c1awKz5Mp7DPfogH CYCYUfH1e6eqC551zUKUfzbiWjgyxf+4J4qrd42uB+lMCJYyNNlggYtebnjE1YDN zDMYvbOk4fkunoHpyeyQl2/QehsuB+xaLqgAhSTiq+ibIjZF/IWTUilbaW4m8aJ2 bm1QVxw7jQDa65X163HqrY56P0w6R6ZGx8YZNWnU53scBb713q/77wMjCBI0PsBd PX3CSrkJ2+xt4AdSUvmr/VEOJCXp+pAU8kSIfdyeOTuVhjz4cpoqJkUX4K98ivsH 0zJvSkCvBxdb81Trlf7MAAfXm+VbMZ7U8opizNgX5eI4v190XmB/achBHjTBZ9vz o0+NeQ== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 42q5n8pp76-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 Nov 2024 19:34:34 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA04.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4A6JYXlh030265 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 6 Nov 2024 19:34:33 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, 6 Nov 2024 11:34:33 -0800 From: Wesley Cheng To: , , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v30 15/30] ASoC: usb: Fetch ASoC card and pcm device information Date: Wed, 6 Nov 2024 11:33:58 -0800 Message-ID: <20241106193413.1730413-16-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241106193413.1730413-1-quic_wcheng@quicinc.com> References: <20241106193413.1730413-1-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: yB6Iecy_ZjYMZV-oDVGohcX0NpkGH4rO X-Proofpoint-ORIG-GUID: yB6Iecy_ZjYMZV-oDVGohcX0NpkGH4rO 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 spamscore=0 impostorscore=0 suspectscore=0 lowpriorityscore=0 mlxlogscore=999 mlxscore=0 priorityscore=1501 bulkscore=0 adultscore=0 malwarescore=0 phishscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411060148 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