From patchwork Thu Sep 12 19:39:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 13802632 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 3F29B1C8FD7; Thu, 12 Sep 2024 19:40:24 +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=1726170026; cv=none; b=PC71DMJvDfwCKpYYYeVG6L3u1+goMtrZHu0NqQlbNTbvLoP3coZ9+xD11s0npjd/YJTLEMLt6zrRc9pVt31cfTw23p285NjvitCpxsBqBTpskPbBASQuifwlKkGAAx93BplmDVpPfH0vkgFLA2rOZ0J+5d02Uf8/5b6FsAKRsYY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726170026; c=relaxed/simple; bh=t7n8rhO3AEi7st/FJuPVX9s4BxgP3J6zupir+2XpTCw=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=u2NlLps4jwPnZ2W0HCBJswYjUS49AdoekEy2ItOItxPhG5pbik3NNqa/RYkwLY1hREMrDYX3QDq0MYCwbp6qvm4GrSsc0Cn0CwA5fGCN6DfDjcHnktn2Zt3fxugCYJ3KNudo52gGKH/P3MuHAiVMiCtmWGZqCn81b3qwkhCt2YE= 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=my7SWAFA; 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="my7SWAFA" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 48CHtG0D001539; Thu, 12 Sep 2024 19:39:52 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= swybFnIRHPLzluHHFQvvDyLicOhSUsPc7nkVL7emCFI=; b=my7SWAFAr+6LYSCW Cl1m2aP18KjiOCnNcJIgQOdqlkem3Gc881xeX4VFzwmMXjj9ysNwsdpQSFtPUttH Vc8L9xOLG+3jgpe5fLAHn5S4b081yCueILmbw7ZG6CM5yepPUYnU3LEbBzvB6b8y AtYpCwoCl3LOhn07lVgjGerT1g/wK9cTwXCjn9XDxzibupH69V/O70jIauARdf23 0SAGElw4QbJ6IuFPeIB6uPxt36nhLBIna12XnEjCmYWm2wMMug56Wsrm07gkhyjj OKuhspvV92pezM3KJeSIdSSg56BtLZauSK8gW720FmyNhoHpq237rm1ulyPjhUHN SnbAtg== Received: from nalasppmta02.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 41he5e5rrb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Sep 2024 19:39:52 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA02.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 48CJdpu2003556 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 12 Sep 2024 19:39:51 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, 12 Sep 2024 12:39:51 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , , CC: , , , , , , , , Wesley Cheng Subject: [PATCH v27 17/32] ASoC: usb: Fetch ASoC card and pcm device information Date: Thu, 12 Sep 2024 12:39:20 -0700 Message-ID: <20240912193935.1916426-18-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240912193935.1916426-1-quic_wcheng@quicinc.com> References: <20240912193935.1916426-1-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: nalasex01c.na.qualcomm.com (10.47.97.35) 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: 3BU5sE1w1BUjUJjcqCIeojFpJAi1e14Y X-Proofpoint-GUID: 3BU5sE1w1BUjUJjcqCIeojFpJAi1e14Y 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 clxscore=1015 priorityscore=1501 suspectscore=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 mlxscore=0 phishscore=0 bulkscore=0 adultscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409120144 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 b32af08030ae..4c6af57291d8 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; }; @@ -59,6 +67,8 @@ void *snd_soc_usb_find_priv_data(struct device *usbdev); int snd_soc_usb_setup_offload_jack(struct snd_soc_component *component, struct snd_soc_jack *jack); int snd_soc_usb_disable_offload_jack(struct snd_soc_component *component); +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); @@ -101,6 +111,12 @@ static inline int snd_soc_usb_disable_offload_jack(struct snd_soc_component *com 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 70d8f854c017..f88ccf90df32 100644 --- a/sound/soc/soc-usb.c +++ b/sound/soc/soc-usb.c @@ -118,6 +118,40 @@ int snd_soc_usb_disable_offload_jack(struct snd_soc_component *component) } EXPORT_SYMBOL_GPL(snd_soc_usb_disable_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; + + 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