From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-001ae601.pphosted.com (mx0b-001ae601.pphosted.com [67.231.152.168]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E604F12F583; Tue, 9 Apr 2024 13:21:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.152.168 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712668906; cv=none; b=ERzuZlU65yCWMIF813RxhHhaay27NUeleNUA8aUw/uvMw3XQQ/RxH3UHdIy+2+cdAEk8VqgVWbmgue1o4+dQungrGOcRxJPMzm9J6Rs/LUT00aqagIC8pNaRVrAiYCA81CL7UeAb0Wdqx2kb48Q38/QVpD0JhZLmogH2vhCHI1I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712668906; c=relaxed/simple; bh=CW0bUoT91C+OeS4fWfs9Zf2yKy/etG27Os3gDIXkWwM=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=MQ5cwkZuiOKBpKugwLMQ6b8mEFHhwuj0VSieXROLQXlJZpaYLyhUx/VEwcqqVxnE3SQ/SkchCcIwaVBexRqk76jqkzzgcRdGwlApT67uoXZzfgBt7V4ucacGOUHeQUltw0loZ98e4SPzJSzHn3wobJcaBHGJBSy0T6KxD2AETpg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=opensource.cirrus.com; spf=pass smtp.mailfrom=opensource.cirrus.com; dkim=pass (2048-bit key) header.d=cirrus.com header.i=@cirrus.com header.b=k47aHYb/; arc=none smtp.client-ip=67.231.152.168 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=opensource.cirrus.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=opensource.cirrus.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=cirrus.com header.i=@cirrus.com header.b="k47aHYb/" Received: from pps.filterd (m0077474.ppops.net [127.0.0.1]) by mx0b-001ae601.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 43961qne028753; Tue, 9 Apr 2024 08:21:28 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h= from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding:content-type; s=PODMain02222019; bh=9 B6Yj62AqiPbBiYEjnlqHocokHAxYIlAj/0KAIUQZPQ=; b=k47aHYb/QEt2VwAWb ol1V5fH1hp0mdXSNnJlqFzDFPj00Xw880wSCEbcpmXOpIjxr0O5c741jVFqe8tca mu3g/ra+qMfWCnANerpJxK3kE6aZ4HGADBzY5jpTIxPCWcxlTzgvhFevE5IVlxXu XDLlwRqgRysJqEEFpdquu22BYdYr1XHq1vadlDpRtuvYmvCWdus6rOAo0toaZ7oB ez85sXZhagScoCOjrFJsxTi3BcqoebOgJXst+cZQRCih4KHjL3IcDFv8Xjy+KSAU ilaPAAhji/huWU32HLEcmAafgVqvbg5ksb2cCRbuoTYafBco9XbKeJWdJV+YVQjX tTzbQ== Received: from ediex01.ad.cirrus.com ([84.19.233.68]) by mx0b-001ae601.pphosted.com (PPS) with ESMTPS id 3xb2tjjvq5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 09 Apr 2024 08:21:27 -0500 (CDT) Received: from ediex01.ad.cirrus.com (198.61.84.80) by ediex01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 9 Apr 2024 14:21:26 +0100 Received: from ediswmail9.ad.cirrus.com (198.61.86.93) by ediex01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9 via Frontend Transport; Tue, 9 Apr 2024 14:21:26 +0100 Received: from ediswws07.ad.cirrus.com (ediswws07.ad.cirrus.com [198.90.208.14]) by ediswmail9.ad.cirrus.com (Postfix) with ESMTP id 2616A82026C; Tue, 9 Apr 2024 13:21:26 +0000 (UTC) From: Charles Keepax To: , , CC: , , Subject: [PATCH 0/3] Add bridged amplifiers to cs42l43 Date: Tue, 9 Apr 2024 14:21:23 +0100 Message-ID: <20240409132126.1117916-1-ckeepax@opensource.cirrus.com> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-ORIG-GUID: Q65mljCcFTYMm3oVy_LrC9FRUcpqu8ti X-Proofpoint-GUID: Q65mljCcFTYMm3oVy_LrC9FRUcpqu8ti X-Proofpoint-Spam-Reason: safe On some cs42l43 systems a couple of cs35l56 amplifiers are attached to the cs42l43's SPI and I2S. On Windows the cs42l43 is controlled by a SDCA class driver and these two amplifiers are controlled by firmware running on the cs42l43. However, under Linux the decision was made to interact with the cs42l43 directly, affording the user greater control over the audio system. However, this has resulted in an issue where these two bridged cs35l56 amplifiers are not populated in ACPI and must be added manually. There is at least an SDCA extension unit DT entry we can key off. The process of adding this is handled using a software node, firstly the ability to add native chip selects to software nodes must be added. Secondly, an additional flag for naming the SPI devices is added this allows the machine driver to key to the correct amplifier. Then finally, the cs42l43 SPI driver adds the two amplifiers directly onto its SPI bus. An additional series will follow soon to add the audio machine driver parts (in the sof-sdw driver), however that is fairly orthogonal to this part of the process, getting the actual amplifiers registered. Thanks, Charles Series changes since v3: - Add Kconfig to make swnode conditionally built - Add define for swnode name - Add custom init and exit calls to register swnode - Use export namespaces - Always name swnode SPI devices after the node name - Correct some header includes - Use HZ_PER_MHZ - Use some swnode helper macros - Use acpi_get_local_address - Correct some handle puts - Add some dev_err_probes Series changes since v2: - Add missing fwnode_handle_puts in driver/spi/spi-cs423l43.c Series changes since v1: - Add missing statics in driver/spi/spi-cs42l43.c Charles Keepax (2): gpio: swnode: Add ability to specify native chip selects for SPI spi: Add a mechanism to use the fwnode name for the SPI device Maciej Strozek (1): spi: cs42l43: Add bridged cs35l56 amplifiers drivers/gpio/Kconfig | 9 +++ drivers/gpio/gpiolib-swnode.c | 38 ++++++++++ drivers/spi/Kconfig | 1 + drivers/spi/spi-cs42l43.c | 139 +++++++++++++++++++++++++++++++++- drivers/spi/spi.c | 6 ++ include/linux/gpio/consumer.h | 4 + 6 files changed, 195 insertions(+), 2 deletions(-) -- 2.39.2