From patchwork Fri Feb 16 03:59:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13559524 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 292121BF33; Fri, 16 Feb 2024 04:00:02 +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=1708056005; cv=none; b=XUGdgZ432gwn6szhNFZWVqLSo1yz76RUHPzKZayA5vLI5sGdYMP8EhJjFX1xxYnnIESVjjDVOBtXtKwjkoi2chsxn70mAQpZVpfe93ovg00LjN8+t6j7JVYqn9cDzwS8Y36lS7X8T5vJyjtjC6imhRUoLb3MqEwoLWxI/l85v7w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708056005; c=relaxed/simple; bh=OGMVYpwblseF7cPaoRItX/PDOxLVSeOUk6aBI7y4uyw=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=laNu5IX7JKa+j9CzpArlPvPt1T9GeKyyLoUsB8lAH7MiZ3ltAtZot/JzW2FGHJ7mB1g1dDpF0djxQ49ucMRqjd4IJQPiKZN3vZzO7RJxu2iokw8kVPPsksRYVZEtR3OPO/m+A63DNm9JjUJPBaW+dNhKXRq6ZSNXO3NqI6xsb+g= 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=Q0rmQH0l; 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="Q0rmQH0l" Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41G0PF7k009644; Fri, 16 Feb 2024 03:59:47 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=TJC2YdRz0aDLySEgsMZu +6TBkWvCXSQnNZLgY+OM3Hw=; b=Q0rmQH0lydXFqN8GPO3osWhtj59BH5JqjahV mgciZEE4mz9iFXsI+mJFT90T7HSdOLI8q0X5o0RK/JpWFpfEiwsCbZrsDezJCBX6 Kbz9yeSoAv9urcMncHswK1MppuO5b+xEUwxBqmul8KhirAFeO9H0nNT8/WKVDcVn 8S9oQaV2Dk9k3kWk504wkSFFtttRP8KdaMDyTGi6rjI5Fg0rjUS8CKCuKq8VimT3 cxugRs2gISNUdRZ5Tx2fGSlEdkWVZzulZSNw5asrCMO29IYt3/r7vmkutQ4zxkQK HQsbEK7UUVB/G+q+4+j7YESm0zfCnSJgzy4FOOmFUuZiyTMx7Q== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3w9fkfap35-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 16 Feb 2024 03:59:46 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 41G3xjB2032362 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 16 Feb 2024 03:59:45 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; Thu, 15 Feb 2024 19:59:45 -0800 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v16 45/50] ASoC: usb: Fetch ASoC sound card information Date: Thu, 15 Feb 2024 19:59:18 -0800 Message-ID: <20240216035923.23392-46-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240216035923.23392-1-quic_wcheng@quicinc.com> References: <20240216035923.23392-1-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: nalasex01a.na.qualcomm.com (10.47.209.196) 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-ORIG-GUID: hskFsBdN0Dm5sartWzrGexW71A6DxssG X-Proofpoint-GUID: hskFsBdN0Dm5sartWzrGexW71A6DxssG 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=2024-02-16_02,2024-02-14_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 malwarescore=0 adultscore=0 lowpriorityscore=0 impostorscore=0 mlxlogscore=999 spamscore=0 bulkscore=0 suspectscore=0 mlxscore=0 phishscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401310000 definitions=main-2402160029 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. Change-Id: Ifc1c277bbead03e9481f084bbaaf95c1e578ab39 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 3137f538270f..56df503c4ecf 100644 --- a/include/sound/soc-usb.h +++ b/include/sound/soc-usb.h @@ -85,6 +85,7 @@ 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); @@ -128,6 +129,11 @@ 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 27c76a33da32..53c4e399909e 100644 --- a/sound/soc/soc-usb.c +++ b/sound/soc/soc-usb.c @@ -457,6 +457,32 @@ 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