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Wed, 19 Mar 2025 00:51:55 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; Tue, 18 Mar 2025 17:51:55 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , CC: , , , , , , , Wesley Cheng Subject: [PATCH v36 16/31] ASoC: usb: Create SOC USB SND jack kcontrol Date: Tue, 18 Mar 2025 17:51:26 -0700 Message-ID: <20250319005141.312805-17-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250319005141.312805-1-quic_wcheng@quicinc.com> References: <20250319005141.312805-1-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: 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-Authority-Analysis: v=2.4 cv=b+uy4sGx c=1 sm=1 tr=0 ts=67da152c cx=c_pps a=ouPCqIW2jiPt+lZRy3xVPw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=3H110R4YSZwA:10 a=Vs1iUdzkB0EA:10 a=QyXUC8HyAAAA:8 a=COk6AnOGAAAA:8 a=3BzOy2cnAe9ClIh14PgA:9 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-ORIG-GUID: GdgVmshb5NdmH4ysZdYnfP1ZTqwxerzZ X-Proofpoint-GUID: GdgVmshb5NdmH4ysZdYnfP1ZTqwxerzZ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-18_10,2025-03-17_03,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 phishscore=0 bulkscore=0 clxscore=1015 mlxlogscore=896 priorityscore=1501 mlxscore=0 lowpriorityscore=0 malwarescore=0 impostorscore=0 adultscore=0 suspectscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2503190003 Expose API for creation of a jack control for notifying of available devices that are plugged in/discovered, and that support offloading. This allows for control names to be standardized across implementations of USB audio offloading. Reviewed-by: Pierre-Louis Bossart Signed-off-by: Wesley Cheng --- include/sound/soc-usb.h | 9 +++++++++ sound/soc/soc-usb.c | 38 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 47 insertions(+) diff --git a/include/sound/soc-usb.h b/include/sound/soc-usb.h index 188b8df52932..e9eb8dbb2e0e 100644 --- a/include/sound/soc-usb.h +++ b/include/sound/soc-usb.h @@ -56,6 +56,9 @@ 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 *usbdev); +int snd_soc_usb_setup_offload_jack(struct snd_soc_component *component, + struct snd_soc_jack *jack); + struct snd_soc_usb *snd_soc_usb_allocate_port(struct snd_soc_component *component, void *data); void snd_soc_usb_free_port(struct snd_soc_usb *usb); @@ -86,6 +89,12 @@ static inline void *snd_soc_usb_find_priv_data(struct device *usbdev) return NULL; } +static inline int snd_soc_usb_setup_offload_jack(struct snd_soc_component *component, + struct snd_soc_jack *jack) +{ + return 0; +} + 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 cb2025d7b58f..ec894182f816 100644 --- a/sound/soc/soc-usb.c +++ b/sound/soc/soc-usb.c @@ -4,7 +4,10 @@ */ #include #include + +#include #include + #include "../usb/card.h" static DEFINE_MUTEX(ctx_mutex); @@ -52,6 +55,41 @@ static struct snd_soc_usb *snd_soc_find_usb_ctx(struct device *dev) return ctx ? ctx : NULL; } +/* SOC USB sound kcontrols */ +/** + * snd_soc_usb_setup_offload_jack() - Create USB offloading jack + * @component: USB DPCM backend DAI component + * @jack: jack structure to create + * + * Creates a jack device for notifying userspace of the availability + * of an offload capable device. + * + * Returns 0 on success, negative on error. + * + */ +int snd_soc_usb_setup_offload_jack(struct snd_soc_component *component, + struct snd_soc_jack *jack) +{ + int ret; + + ret = snd_soc_card_jack_new(component->card, "USB Offload Jack", + SND_JACK_USB, jack); + if (ret < 0) { + dev_err(component->card->dev, "Unable to add USB offload jack: %d\n", + ret); + return ret; + } + + ret = snd_soc_component_set_jack(component, jack, NULL); + if (ret) { + dev_err(component->card->dev, "Failed to set jack: %d\n", ret); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_setup_offload_jack); + /** * snd_soc_usb_find_priv_data() - Retrieve private data stored * @usbdev: device reference