From nobody Fri Sep 19 10:17:17 2025 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 77990C4332F for ; Fri, 25 Nov 2022 14:21:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229727AbiKYOVt (ORCPT ); Fri, 25 Nov 2022 09:21:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229485AbiKYOVr (ORCPT ); Fri, 25 Nov 2022 09:21:47 -0500 Received: from mx0b-001ae601.pphosted.com (mx0b-001ae601.pphosted.com [67.231.152.168]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E65C323157 for ; Fri, 25 Nov 2022 06:21:46 -0800 (PST) Received: from pps.filterd (m0077474.ppops.net [127.0.0.1]) by mx0b-001ae601.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 2AP8g14d009072; Fri, 25 Nov 2022 08:20:31 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=PODMain02222019; bh=Hf+p2XLDxtDu0bixw/WcTYV02K3jKz11jQ4Wh7jZWhs=; b=JNbcaxIq890baQYfRP7F1/m0qJBfIKzCHx/iWaXRDWaEJ3gEKV6fmFydkme2QwFY4abH FW16PxoQGsQvUurmsm+2KoVD5L7DhiY1VJWYGcAdeCU/2G5UjeI7EwFIazH4CdpNlbab AzvNxf1ycQjR6nrQhdTMSbtQgnwCHAOeEz0SsjJCvWSZxDYCtZG8YkyaLDW37HdqaLdV uGLYfuPojsKQAOpOAi1pOKrNzWdaKB63KSWQa2AR+URNqNzmvRhTTsqPXskKHkjDr7ZA WUgTc89qYhsP6Sc7d24fLqrGup5nQZTR9mizO/0uixx2WwraqcP4ejeEU2KcaAqHlDe3 DQ== Received: from ediex02.ad.cirrus.com ([84.19.233.68]) by mx0b-001ae601.pphosted.com (PPS) with ESMTPS id 3kxvet7ccp-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 25 Nov 2022 08:20:30 -0600 Received: from ediex01.ad.cirrus.com (198.61.84.80) by ediex02.ad.cirrus.com (198.61.84.81) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.20; Fri, 25 Nov 2022 08:20:29 -0600 Received: from ediswmail.ad.cirrus.com (198.61.86.93) by ediex01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server id 15.2.1118.20 via Frontend Transport; Fri, 25 Nov 2022 08:20:29 -0600 Received: from algalon.ad.cirrus.com (algalon.ad.cirrus.com [198.90.251.122]) by ediswmail.ad.cirrus.com (Postfix) with ESMTP id 1F523B10; Fri, 25 Nov 2022 14:20:29 +0000 (UTC) From: Charles Keepax To: CC: , , , , , Subject: [PATCH v4 2/4] soundwire: Provide build stubs for common functions Date: Fri, 25 Nov 2022 14:20:26 +0000 Message-ID: <20221125142028.1118618-3-ckeepax@opensource.cirrus.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221125142028.1118618-1-ckeepax@opensource.cirrus.com> References: <20221125142028.1118618-1-ckeepax@opensource.cirrus.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-ORIG-GUID: -RykCZ5n6tuVbhrgytsuMh0k7okAmOu6 X-Proofpoint-GUID: -RykCZ5n6tuVbhrgytsuMh0k7okAmOu6 X-Proofpoint-Spam-Reason: safe Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Provide stub functions when CONFIG_SOUNDWIRE is not set for functions that are quite likely to be used from common code on devices supporting multiple control buses. Reviewed-by: Pierre-Louis Bossart Signed-off-by: Charles Keepax --- Changes since v3: - Return error code and add WARN_ONCE in build stubs. Note I returned EINVAL rather than the discussed ENOSYS since it turns out checkpatch informs me I really shouldn't be returning ENOSYS :-) Thanks, Charles include/linux/soundwire/sdw.h | 105 ++++++++++++++++++++++++++++++---- 1 file changed, 95 insertions(+), 10 deletions(-) diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 902ed46f76c80..132a0ee97b804 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -4,6 +4,7 @@ #ifndef __SOUNDWIRE_H #define __SOUNDWIRE_H =20 +#include #include #include =20 @@ -1021,15 +1022,8 @@ int sdw_stream_add_master(struct sdw_bus *bus, struct sdw_port_config *port_config, unsigned int num_ports, struct sdw_stream_runtime *stream); -int sdw_stream_add_slave(struct sdw_slave *slave, - struct sdw_stream_config *stream_config, - struct sdw_port_config *port_config, - unsigned int num_ports, - struct sdw_stream_runtime *stream); int sdw_stream_remove_master(struct sdw_bus *bus, struct sdw_stream_runtime *stream); -int sdw_stream_remove_slave(struct sdw_slave *slave, - struct sdw_stream_runtime *stream); int sdw_startup_stream(void *sdw_substream); int sdw_prepare_stream(struct sdw_stream_runtime *stream); int sdw_enable_stream(struct sdw_stream_runtime *stream); @@ -1040,8 +1034,20 @@ int sdw_bus_prep_clk_stop(struct sdw_bus *bus); int sdw_bus_clk_stop(struct sdw_bus *bus); int sdw_bus_exit_clk_stop(struct sdw_bus *bus); =20 -/* messaging and data APIs */ +int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id); +void sdw_extract_slave_id(struct sdw_bus *bus, u64 addr, struct sdw_slave_= id *id); =20 +#if IS_ENABLED(CONFIG_SOUNDWIRE) + +int sdw_stream_add_slave(struct sdw_slave *slave, + struct sdw_stream_config *stream_config, + struct sdw_port_config *port_config, + unsigned int num_ports, + struct sdw_stream_runtime *stream); +int sdw_stream_remove_slave(struct sdw_slave *slave, + struct sdw_stream_runtime *stream); + +/* messaging and data APIs */ int sdw_read(struct sdw_slave *slave, u32 addr); int sdw_write(struct sdw_slave *slave, u32 addr, u8 value); int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value); @@ -1053,7 +1059,86 @@ int sdw_nwrite_no_pm(struct sdw_slave *slave, u32 ad= dr, size_t count, const u8 * int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val); int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val); =20 -int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id); -void sdw_extract_slave_id(struct sdw_bus *bus, u64 addr, struct sdw_slave_= id *id); +#else + +static inline int sdw_stream_add_slave(struct sdw_slave *slave, + struct sdw_stream_config *stream_config, + struct sdw_port_config *port_config, + unsigned int num_ports, + struct sdw_stream_runtime *stream) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_stream_remove_slave(struct sdw_slave *slave, + struct sdw_stream_runtime *stream) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +/* messaging and data APIs */ +static inline int sdw_read(struct sdw_slave *slave, u32 addr) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_write(struct sdw_slave *slave, u32 addr, u8 value) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 va= lue) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_read_no_pm(struct sdw_slave *slave, u32 addr) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_nread(struct sdw_slave *slave, u32 addr, size_t coun= t, u8 *val) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_nread_no_pm(struct sdw_slave *slave, u32 addr, size_= t count, u8 *val) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_nwrite(struct sdw_slave *slave, u32 addr, size_t cou= nt, const u8 *val) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_nwrite_no_pm(struct sdw_slave *slave, u32 addr, size= _t count, const u8 *val) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u= 8 val) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +static inline int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 m= ask, u8 val) +{ + WARN_ONCE(1, "SoundWire API is disabled"); + return -EINVAL; +} + +#endif /* CONFIG_SOUNDWIRE */ =20 #endif /* __SOUNDWIRE_H */ --=20 2.30.2