From patchwork Thu Jan 26 03:14:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wesley Cheng X-Patchwork-Id: 648539 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 82222C61D9D for ; Thu, 26 Jan 2023 03:16:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236225AbjAZDP7 (ORCPT ); Wed, 25 Jan 2023 22:15:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236214AbjAZDP5 (ORCPT ); Wed, 25 Jan 2023 22:15:57 -0500 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 77B4E6601C; Wed, 25 Jan 2023 19:15:19 -0800 (PST) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 30Q38Osk022211; Thu, 26 Jan 2023 03:14:46 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=SiGwMQVfI8qUMo4oBmUYasKXPqJDaQ0HCFvv1Uhc3es=; b=j8ZCJAUmctepwhJKoUCDJ1WHqWaC8eFgIArFFl+ZesONe6rhcRkjtet1ApA/MkX82isa iC4u2GCOzWq/2buZJ0sdKQnUBVtLyahg5Njz355JGPhTNXiFGEv1qPlZWHo2LGPHpKdu pa7j3XdoVZ7OTJpLgKZCSTILNNhf+CB8RHHhgS6584Eu7N4Et2aXMfPFe+5RXREZX0y/ O7ZuJaRFP8UcO8PbP8OMGpCqMWj+61cM1byZfGtKI6ls0zgzpqiCWqZ7HgDR4VnQ7Zyx Rd7NqRMCDlM93n+J8QjlOw1i2h5yBPMs0Kl0nTWO+0gM27E/5gHmDEmYFgIbi9wBODms ww== Received: from nasanppmta04.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3nb0qrsx77-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 26 Jan 2023 03:14:45 +0000 Received: from nasanex01c.na.qualcomm.com (nasanex01c.na.qualcomm.com [10.45.79.139]) by NASANPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 30Q3EjBj031324 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 26 Jan 2023 03:14:45 GMT Received: from hu-wcheng-lv.qualcomm.com (10.49.16.6) by nasanex01c.na.qualcomm.com (10.45.79.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Wed, 25 Jan 2023 19:14:44 -0800 From: Wesley Cheng To: , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [RFC PATCH v2 12/22] sound: usb: card: Introduce USB SND platform op callbacks Date: Wed, 25 Jan 2023 19:14:14 -0800 Message-ID: <20230126031424.14582-13-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230126031424.14582-1-quic_wcheng@quicinc.com> References: <20230126031424.14582-1-quic_wcheng@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nasanex01c.na.qualcomm.com (10.45.79.139) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 9vPalcDpYzI_lkkCJI4Ee3kCXXK1r2kB X-Proofpoint-ORIG-GUID: 9vPalcDpYzI_lkkCJI4Ee3kCXXK1r2kB X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-01-25_14,2023-01-25_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 lowpriorityscore=0 phishscore=0 mlxlogscore=806 malwarescore=0 mlxscore=0 priorityscore=1501 spamscore=0 suspectscore=0 clxscore=1015 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301260028 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 | 28 ++++++++++++++++++++++++++++ sound/usb/card.h | 20 ++++++++++++++++++++ 2 files changed, 48 insertions(+) diff --git a/sound/usb/card.c b/sound/usb/card.c index 26268ffb8274..803230343c16 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -117,6 +117,24 @@ 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) +{ + if (platform_ops) + return -EEXIST; + + platform_ops = ops; + return 0; +} +EXPORT_SYMBOL_GPL(snd_usb_register_platform_ops); + +int snd_usb_unregister_platform_ops(void) +{ + platform_ops = NULL; + return 0; +} +EXPORT_SYMBOL_GPL(snd_usb_unregister_platform_ops); /* * disconnect streams @@ -910,6 +928,10 @@ static int usb_audio_probe(struct usb_interface *intf, usb_set_intfdata(intf, chip); atomic_dec(&chip->active); mutex_unlock(®ister_mutex); + + if (platform_ops->connect_cb) + platform_ops->connect_cb(intf, chip); + return 0; __error: @@ -943,6 +965,9 @@ static void usb_audio_disconnect(struct usb_interface *intf) if (chip == USB_AUDIO_IFACE_UNUSED) return; + if (platform_ops->disconnect_cb) + platform_ops->disconnect_cb(intf); + card = chip->card; mutex_lock(®ister_mutex); @@ -1087,6 +1112,9 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) chip->system_suspend = chip->num_suspended_intf; } + if (platform_ops->suspend_cb) + platform_ops->suspend_cb(intf, message); + return 0; } diff --git a/sound/usb/card.h b/sound/usb/card.h index 40061550105a..2249c411c3a1 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -206,4 +206,24 @@ struct snd_usb_stream { struct list_head list; }; +struct snd_usb_platform_ops { + void (*connect_cb)(struct usb_interface *intf, struct snd_usb_audio *chip); + void (*disconnect_cb)(struct usb_interface *intf); + void (*suspend_cb)(struct usb_interface *intf, pm_message_t message); +}; + +#if IS_ENABLED(CONFIG_SND_USB_AUDIO) +int snd_usb_register_platform_ops(struct snd_usb_platform_ops *ops); +int snd_usb_unregister_platform_ops(void); +#else +int snd_usb_register_platform_ops(struct snd_usb_platform_ops *ops) +{ + return -EOPNOTSUPP; +} + +int snd_usb_unregister_platform_ops(void) +{ + return -EOPNOTSUPP; +} +#endif /* IS_ENABLED(CONFIG_SND_USB_AUDIO) */ #endif /* __USBAUDIO_CARD_H */