From patchwork Tue Feb 13 00:54:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13554359 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 BD3415812E; Tue, 13 Feb 2024 00:55:06 +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=1707785709; cv=none; b=HarfSMz8Y98j3oOXqSsDvhResMfcntrdifP7vWWSVwJ4EVlUpu6kltLb6VKxp/I4GxYQn9Tl+8nBRm6EHcRC110ewTI6C5mqhb5paTWVMkVr4pEOp1B1AfOf5C8xYrZEiRs0gchNggxC65l5n+CmuhQ0GaT3CeBdQO/YDcYlO2A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707785709; c=relaxed/simple; bh=uV80yVRaHN0ZIjjzpujCRpYPFK4+I3XCkXyOipjyXck=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=AkSXJlcFUyq3ZL5DNxIUWC/hdmb04tN9lXbCsMIfcJ6kp8Zn798ieRYvTvVkFdK3StxPbx57UYykYgSX+AE9TIbG74WMX2JOCNeShK6XvSiazDU8/YzOXrz/GfS0+rYk3OCsLRDsCXNis2NCToMEd0on6lAUqMOXfsI8SBTcr9o= 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=Etm7pnBJ; 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="Etm7pnBJ" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41D01HsV008566; Tue, 13 Feb 2024 00:54:46 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=ij8oJoph0GmIoY5H7m5O 8wFj3hNfBOF1jliLmTV42mo=; b=Etm7pnBJUxGqvHquCE4uslY6RzRrLN9Md8s7 jyZsE7xKMrmAvtBGt3rOrne5k7lMDy6dtcbvuQw9tGD37I90E8YPxkuQX9r4uEO8 EUHrbYqfP7BXYeONEmoR5Jom/1iNp2wJ1It679ApvIYgCpGQ6ioIm0O+yNn70OQL 2M2fHlWINOxEilk6KdZlS1uQjGK8jipEst/kGgahimTJ/HLResTRpBWG+Nn8Xzgc 5CCJFpcAR1gm/ueBRTYb9t8Fq8dRfQ27uQryYlg9xPrL/kvypiJbSU0EIHvameFm 8mz24BRopc6sE5GAOXoT/x6M495yX/bDyU0McueGxXqWVZfSBA== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3w7q2y0vw0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 13 Feb 2024 00:54:46 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 41D0sj1D031168 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 13 Feb 2024 00:54:45 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 15.2.1118.40; Mon, 12 Feb 2024 16:54:45 -0800 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v15 45/50] ASoC: usb: Fetch ASoC sound card information Date: Mon, 12 Feb 2024 16:54:17 -0800 Message-ID: <20240213005422.3121-46-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240213005422.3121-1-quic_wcheng@quicinc.com> References: <20240213005422.3121-1-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: eo9G6cgPzrv80LvHTH8TiioBPqrI4_An X-Proofpoint-ORIG-GUID: eo9G6cgPzrv80LvHTH8TiioBPqrI4_An X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-12_20,2024-02-12_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 clxscore=1015 adultscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401310000 definitions=main-2402130005 For USB sound to expose mixer controls to fetch information about the ASoC sound card, add an API that returns the platform sound card number that is registered with SOC USB. Knowing this allows for applications to further query about the offload status. Signed-off-by: Wesley Cheng --- include/sound/soc-usb.h | 6 ++++++ sound/soc/soc-usb.c | 26 ++++++++++++++++++++++++++ 2 files changed, 32 insertions(+) diff --git a/include/sound/soc-usb.h b/include/sound/soc-usb.h index b75a48986b6e..e864a44e7cfa 100644 --- a/include/sound/soc-usb.h +++ b/include/sound/soc-usb.h @@ -74,6 +74,7 @@ int snd_soc_usb_find_format(int card_idx, struct snd_pcm_hw_params *params, int snd_soc_usb_connect(struct device *usbdev, struct snd_soc_usb_device *sdev); int snd_soc_usb_disconnect(struct device *usbdev, struct snd_soc_usb_device *sdev); void *snd_soc_usb_find_priv_data(struct device *dev); +int snd_soc_usb_device_offload_available(struct device *dev); int snd_soc_usb_prepare_session(struct snd_soc_usb *usb, int card_idx, int pcm_idx); int snd_soc_usb_shutdown_session(struct snd_soc_usb *usb, int session_id); @@ -117,6 +118,11 @@ static inline void *snd_soc_usb_find_priv_data(struct device *dev) return NULL; } +static inline int snd_soc_usb_device_offload_available(struct device *dev) +{ + return -ENODEV; +} + static inline int snd_soc_usb_prepare_session(struct snd_soc_usb *usb, int card_idx, int pcm_idx) { diff --git a/sound/soc/soc-usb.c b/sound/soc/soc-usb.c index f2e83c2d68fd..9de5b9ed0cea 100644 --- a/sound/soc/soc-usb.c +++ b/sound/soc/soc-usb.c @@ -339,6 +339,32 @@ int snd_soc_usb_find_format(int card_idx, struct snd_pcm_hw_params *params, } EXPORT_SYMBOL_GPL(snd_soc_usb_find_format); +/** + * snd_soc_usb_device_offload_available() - Fetch BE DAI link sound card + * @dev: the device to find in SOC USB + * + * Finds the component linked to a specific SOC USB instance, and returns + * the sound card number for the platform card supporting offloading. + * + */ +int snd_soc_usb_device_offload_available(struct device *dev) +{ + struct snd_soc_usb *ctx; + struct device_node *node; + + node = snd_soc_find_phandle(dev); + if (IS_ERR(node)) + return -ENODEV; + + ctx = snd_soc_find_usb_ctx(node); + of_node_put(node); + if (!ctx) + return -ENODEV; + + return ctx->component->card->snd_card->number; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_device_offload_available); + /** * snd_soc_usb_allocate_port() - allocate a SOC USB device * @component: USB DPCM backend DAI component