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Thu, 29 Aug 2024 19:41:29 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA05.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 47TJfSkk020960 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 29 Aug 2024 19:41:28 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, 29 Aug 2024 12:41:27 -0700 From: Wesley Cheng To: , , , , , , , , , , , , , CC: , , , , , , , , Wesley Cheng Subject: [PATCH v26 13/33] ASoC: usb: Add PCM format check API for USB backend Date: Thu, 29 Aug 2024 12:40:45 -0700 Message-ID: <20240829194105.1504814-14-quic_wcheng@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240829194105.1504814-1-quic_wcheng@quicinc.com> References: <20240829194105.1504814-1-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 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: 5Oor1bA9YLY0RwZrsiO0aSVPTYBzNMdj X-Proofpoint-GUID: 5Oor1bA9YLY0RwZrsiO0aSVPTYBzNMdj X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-29_06,2024-08-29_02,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1015 adultscore=0 suspectscore=0 lowpriorityscore=0 mlxlogscore=999 spamscore=0 priorityscore=1501 bulkscore=0 mlxscore=0 malwarescore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408290139 Message-ID-Hash: 5IN626ZFROTU7S7RCQJKAJWTSAJD6EJX X-Message-ID-Hash: 5IN626ZFROTU7S7RCQJKAJWTSAJD6EJX X-MailFrom: quic_wcheng@quicinc.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Introduce a helper to check if a particular PCM format is supported by the USB audio device connected. If the USB audio device does not have an audio profile which can support the requested format, then notify the USB backend. Signed-off-by: Wesley Cheng Reviewed-by: Pierre-Louis Bossart --- include/sound/soc-usb.h | 11 +++++++++++ sound/soc/soc-usb.c | 26 ++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) diff --git a/include/sound/soc-usb.h b/include/sound/soc-usb.h index dbe9e1429779..b550ee87b748 100644 --- a/include/sound/soc-usb.h +++ b/include/sound/soc-usb.h @@ -46,6 +46,10 @@ struct snd_soc_usb { }; #if IS_ENABLED(CONFIG_SND_SOC_USB) +int snd_soc_usb_find_supported_format(int card_idx, + struct snd_pcm_hw_params *params, + int direction); + 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 *dev); @@ -56,6 +60,13 @@ void snd_soc_usb_free_port(struct snd_soc_usb *usb); void snd_soc_usb_add_port(struct snd_soc_usb *usb); void snd_soc_usb_remove_port(struct snd_soc_usb *usb); #else +static inline int +snd_soc_usb_find_supported_format(int card_idx, struct snd_pcm_hw_params *params, + int direction) +{ + return -EINVAL; +} + static inline int snd_soc_usb_connect(struct device *usbdev, struct snd_soc_usb_device *sdev) { diff --git a/sound/soc/soc-usb.c b/sound/soc/soc-usb.c index 794e00857a7e..8ade2060d8fe 100644 --- a/sound/soc/soc-usb.c +++ b/sound/soc/soc-usb.c @@ -74,6 +74,32 @@ void *snd_soc_usb_find_priv_data(struct device *dev) } EXPORT_SYMBOL_GPL(snd_soc_usb_find_priv_data); +/** + * snd_soc_usb_find_supported_format() - Check if audio format is supported + * @card_idx: USB sound chip array index + * @params: PCM parameters + * @direction: capture or playback + * + * Ensure that a requested audio profile from the ASoC side is able to be + * supported by the USB device. + * + * Return 0 on success, negative on error. + * + */ +int snd_soc_usb_find_supported_format(int card_idx, + struct snd_pcm_hw_params *params, + int direction) +{ + struct snd_usb_stream *as; + + as = snd_usb_find_suppported_substream(card_idx, params, direction); + if (!as) + return -EOPNOTSUPP; + + return 0; +} +EXPORT_SYMBOL_GPL(snd_soc_usb_find_supported_format); + /** * snd_soc_usb_allocate_port() - allocate a SOC USB port for offloading support * @component: USB DPCM backend DAI component