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Fri, 23 Dec 2022 23:32:43 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 15.2.986.36; Fri, 23 Dec 2022 15:32:43 -0800 From: Wesley Cheng To: , , , , , , , , , , , , Subject: [RFC PATCH 01/14] ASoC: Add SOC USB APIs for adding an USB backend Date: Fri, 23 Dec 2022 15:31:47 -0800 Message-ID: <20221223233200.26089-2-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221223233200.26089-1-quic_wcheng@quicinc.com> References: <20221223233200.26089-1-quic_wcheng@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] 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-GUID: ccQ_aq5PpeclQXVJiKqw8QziyKKcKHrc X-Proofpoint-ORIG-GUID: ccQ_aq5PpeclQXVJiKqw8QziyKKcKHrc X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-23_08,2022-12-23_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 mlxlogscore=999 impostorscore=0 spamscore=0 phishscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2212230197 X-Mailman-Approved-At: Sun, 25 Dec 2022 19:49:45 +0100 X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Wesley Cheng , quic_jackp@quicinc.com, quic_plai@quicinc.com Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Some platforms may want to register its USB port to be handled by the ASoC framework. Audio playback/capture support is also handled entirely by the vendor ASoC drivers. Signed-off-by: Wesley Cheng --- include/sound/soc-usb.h | 31 +++++++++++++++++++ sound/soc/Makefile | 2 +- sound/soc/soc-usb.c | 66 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 98 insertions(+), 1 deletion(-) create mode 100644 include/sound/soc-usb.h create mode 100644 sound/soc/soc-usb.c diff --git a/include/sound/soc-usb.h b/include/sound/soc-usb.h new file mode 100644 index 000000000000..7d52e5d2371c --- /dev/null +++ b/include/sound/soc-usb.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef __LINUX_SND_SOC_USB_H +#define __LINUX_SND_SOC_USB_H + +/** + * struct snd_soc_usb + * @component - Reference to DAPM component + * @connection_status_cb - callback to notify connection events + * @priv_data - vendor data + **/ +struct snd_soc_usb { + struct snd_soc_component *component; + int (*connection_status_cb)(struct snd_soc_usb *usb, int card_idx, + int connected); + void *priv_data; +}; + +int snd_soc_usb_connect(int card_idx); +int snd_soc_usb_disconnect(void); +void snd_soc_usb_set_priv_data(void *priv); +void *snd_soc_usb_get_priv_data(void); + +struct snd_soc_usb *snd_soc_usb_add_port(struct device *dev, + int (*connection_cb)(struct snd_soc_usb *usb, int card_idx, + int connected)); +int snd_soc_usb_remove_port(void); +#endif diff --git a/sound/soc/Makefile b/sound/soc/Makefile index 507eaed1d6a1..3305ceb59d84 100644 --- a/sound/soc/Makefile +++ b/sound/soc/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -snd-soc-core-objs := soc-core.o soc-dapm.o soc-jack.o soc-utils.o soc-dai.o soc-component.o +snd-soc-core-objs := soc-core.o soc-dapm.o soc-jack.o soc-usb.o soc-utils.o soc-dai.o soc-component.o snd-soc-core-objs += soc-pcm.o soc-devres.o soc-ops.o soc-link.o soc-card.o snd-soc-core-$(CONFIG_SND_SOC_COMPRESS) += soc-compress.o diff --git a/sound/soc/soc-usb.c b/sound/soc/soc-usb.c new file mode 100644 index 000000000000..c6c376960e4d --- /dev/null +++ b/sound/soc/soc-usb.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ +#include +#include +#include +#include "../usb/card.h" + +struct snd_soc_usb *ctx; + +void *snd_soc_usb_get_priv_data(void) +{ + if (ctx) + return ctx->priv_data; + + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_get_priv_data); + +void snd_soc_usb_set_priv_data(void *priv) +{ + if (ctx) + ctx->priv_data = priv; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_set_priv_data); + +struct snd_soc_usb *snd_soc_usb_add_port(struct device *dev, + int (*connection_cb)(struct snd_soc_usb *usb, int card_idx, + int connected)) +{ + struct snd_soc_usb *usb; + + usb = devm_kzalloc(dev, sizeof(*usb), GFP_KERNEL); + if (!usb) + return ERR_PTR(-ENOMEM); + + usb->connection_status_cb = connection_cb; + ctx = usb; + + return usb; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_add_port); + +int snd_soc_usb_remove_port(void) +{ + ctx = NULL; + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_remove_port); + +int snd_soc_usb_connect(int card_idx) +{ + if (ctx && ctx->connection_status_cb) + ctx->connection_status_cb(ctx, card_idx, 1); + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_connect); + +int snd_soc_usb_disconnect(void) +{ + if (ctx && ctx->connection_status_cb) + ctx->connection_status_cb(ctx, -1, 0); + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_disconnect);