From patchwork Tue Aug 29 21:06:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 718563 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55D78CA0C13 for ; Tue, 29 Aug 2023 21:08:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240685AbjH2VHo (ORCPT ); Tue, 29 Aug 2023 17:07:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41692 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240600AbjH2VHd (ORCPT ); Tue, 29 Aug 2023 17:07:33 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDF6FCC2; Tue, 29 Aug 2023 14:07:29 -0700 (PDT) Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37TKxiQf007105; Tue, 29 Aug 2023 21:07:12 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=KoDGHwXkK7uXrDe6ZdkhF6G282UR5/DldWBmGKXiYiA=; b=lZQlJtURuPoLiw19JOgDsxhuQWwa8Y8zVpGAPxOd6BmTWGxp47EsTdgacZkJNQ/W7cU4 GEaBHv6jhp2HrsaJ4GOGibROGKZ6aHffjB8OqUn/9eaPrYOOjFU4wVTRlfF7MnGneu/1 HNCzYN0huGkykpca1/yNUizMmUMIO5CkJyeRc1XcyNcsWQC8j0D6ZRkrXcUSS8SwxNF+ eGqbtswRM8rtYY9zEYZBxKFAN4CDXxCnroVSB4jiCemXuHB0+qVmsT/obPtxQnwpnsAp Pdz2YyiG3E4YjP6WGTjkSpIg40B8ff7fmKFb+xVwhU8Dw0IrtATKhNAbTKdoInPYuzjh fA== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3sruhnur0m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 29 Aug 2023 21:07:11 +0000 Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 37TL7Akw000565 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 29 Aug 2023 21:07:10 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 15.2.1118.36; Tue, 29 Aug 2023 14:07:10 -0700 From: Wesley Cheng To: , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v5 11/32] sound: usb: card: Introduce USB SND platform op callbacks Date: Tue, 29 Aug 2023 14:06:36 -0700 Message-ID: <20230829210657.9904-12-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230829210657.9904-1-quic_wcheng@quicinc.com> References: <20230829210657.9904-1-quic_wcheng@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] 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: vZ3URnE7vGzChpdWu0Xs1cZ_jDqIHA9r X-Proofpoint-ORIG-GUID: vZ3URnE7vGzChpdWu0Xs1cZ_jDqIHA9r X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-29_14,2023-08-29_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 mlxlogscore=851 suspectscore=0 clxscore=1015 phishscore=0 impostorscore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2308290181 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Allow for different platforms to be notified on USB SND connect/disconnect seqeunces. This allows for platform USB SND modules to properly initialize and populate internal structures with references to the USB SND chip device. Signed-off-by: Wesley Cheng --- sound/usb/card.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ sound/usb/card.h | 9 +++++++++ 2 files changed, 54 insertions(+) diff --git a/sound/usb/card.c b/sound/usb/card.c index 1b2edc0fd2e9..067a1e82f4bf 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -118,6 +118,34 @@ MODULE_PARM_DESC(skip_validation, "Skip unit descriptor validation (default: no) static DEFINE_MUTEX(register_mutex); static struct snd_usb_audio *usb_chip[SNDRV_CARDS]; static struct usb_driver usb_audio_driver; +static struct snd_usb_platform_ops *platform_ops; + +int snd_usb_register_platform_ops(struct snd_usb_platform_ops *ops) +{ + int ret; + + mutex_lock(®ister_mutex); + if (platform_ops) { + ret = -EEXIST; + goto out; + } + + platform_ops = ops; +out: + mutex_unlock(®ister_mutex); + return 0; +} +EXPORT_SYMBOL_GPL(snd_usb_register_platform_ops); + +int snd_usb_unregister_platform_ops(void) +{ + mutex_lock(®ister_mutex); + platform_ops = NULL; + mutex_unlock(®ister_mutex); + + return 0; +} +EXPORT_SYMBOL_GPL(snd_usb_unregister_platform_ops); /* * disconnect streams @@ -910,7 +938,11 @@ static int usb_audio_probe(struct usb_interface *intf, chip->num_interfaces++; usb_set_intfdata(intf, chip); atomic_dec(&chip->active); + + if (platform_ops && platform_ops->connect_cb) + platform_ops->connect_cb(chip); mutex_unlock(®ister_mutex); + return 0; __error: @@ -947,6 +979,9 @@ static void usb_audio_disconnect(struct usb_interface *intf) card = chip->card; mutex_lock(®ister_mutex); + if (platform_ops && platform_ops->disconnect_cb) + platform_ops->disconnect_cb(chip); + if (atomic_inc_return(&chip->shutdown) == 1) { struct snd_usb_stream *as; struct snd_usb_endpoint *ep; @@ -1090,6 +1125,11 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) chip->system_suspend = chip->num_suspended_intf; } + mutex_lock(®ister_mutex); + if (platform_ops && platform_ops->suspend_cb) + platform_ops->suspend_cb(intf, message); + mutex_unlock(®ister_mutex); + return 0; } @@ -1130,6 +1170,11 @@ static int usb_audio_resume(struct usb_interface *intf) snd_usb_midi_v2_resume_all(chip); + mutex_lock(®ister_mutex); + if (platform_ops && platform_ops->resume_cb) + platform_ops->resume_cb(intf); + mutex_unlock(®ister_mutex); + out: if (chip->num_suspended_intf == chip->system_suspend) { snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); diff --git a/sound/usb/card.h b/sound/usb/card.h index 6ec95b2edf86..2884912adc96 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -207,4 +207,13 @@ struct snd_usb_stream { struct list_head list; }; +struct snd_usb_platform_ops { + void (*connect_cb)(struct snd_usb_audio *chip); + void (*disconnect_cb)(struct snd_usb_audio *chip); + void (*suspend_cb)(struct usb_interface *intf, pm_message_t message); + void (*resume_cb)(struct usb_interface *intf); +}; + +int snd_usb_register_platform_ops(struct snd_usb_platform_ops *ops); +int snd_usb_unregister_platform_ops(void); #endif /* __USBAUDIO_CARD_H */