From patchwork Tue May 23 15:12:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13252505 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 15C39C7EE26 for ; Tue, 23 May 2023 15:14:27 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id B1CA96C0; Tue, 23 May 2023 17:13:35 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz B1CA96C0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1684854865; bh=fTYqDpnPeDecn81aQqoaXRxxGGYnBNI/2bFaRrPz8f4=; h=From:To:Cc:Subject:Date:List-Id:List-Archive:List-Help:List-Owner: List-Post:List-Subscribe:List-Unsubscribe:From; b=SHgh31Y0xBh3L0xekJdba9aCMwC2F1z8zGfUyfjn3aM15a/rtfWPbZsf1yFZuPJtF k7y4xvGFsK7cF9tL1/y4BfULtab3kkFfqdJzxL3aic3hQjHzLOkLevuuktBEaofVOh DvyCFtXVsxf1sbP2hzXbtmHhjjA/OsAEIhrHOwNY= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 9B197F8055C; Tue, 23 May 2023 17:12:45 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 354E4F80553; Tue, 23 May 2023 17:12:45 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id C70E5F8024E; Tue, 23 May 2023 17:12:41 +0200 (CEST) Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id BD28DF800DF for ; Tue, 23 May 2023 17:12:29 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz BD28DF800DF Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key, unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256 header.s=gm1 header.b=TSmhYRr+ Received: (Authenticated sender: herve.codina@bootlin.com) by mail.gandi.net (Postfix) with ESMTPA id 6D690C000C; Tue, 23 May 2023 15:12:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1684854749; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=44LW4D+dEQ4642r5zsLapFoXq9b1JcRYCd7i3HkCKYM=; b=TSmhYRr+lsHjhiKF/pnRF7qFR3c7YLwMNGErcOAdJzgvH65cnroU6fGyh0hzPo2ZdfE7GJ a9Vxf9vSpCPRBXGZ3tVcWomX++WuAl3nWH2mlbzQkWwpAFDucsO6MdvD6mmTHSVIH6d6G+ +af87BadCTLNfjxOVFgIOuAZgZaW1o/58W3oAFaTrXIf44iHdcF+KfoD8pEpeUfP3fqDTs 9O5aoRFqE5I3MsxGhM4LF7k/aKCWyLuDWjXr61zR546f5Lww8WaHpWrL0TRfhjmXBWyGG3 4zLenMx4cSwu7xhw3zyD4KErAPRtf7NSjpwtb04vjHBhO6mOA7H4skh+JpDWfw== From: Herve Codina To: Herve Codina , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Cameron , Lars-Peter Clausen , Jaroslav Kysela , Takashi Iwai , Kuninori Morimoto Cc: alsa-devel@alsa-project.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, Christophe Leroy , Thomas Petazzoni Subject: [PATCH v2 0/9] Add support for IIO devices in ASoC Date: Tue, 23 May 2023 17:12:14 +0200 Message-Id: <20230523151223.109551-1-herve.codina@bootlin.com> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 Message-ID-Hash: 33Z3OBEZOJ5EN3E7PI5Q73XEVRA7U63A X-Message-ID-Hash: 33Z3OBEZOJ5EN3E7PI5Q73XEVRA7U63A X-MailFrom: herve.codina@bootlin.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: 3.3.8 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: Several weeks ago, I sent a series [1] for adding a potentiometer as an auxiliary device in ASoC. The feedback was that the potentiometer should be directly handled in IIO (as other potentiometers) and something more generic should be present in ASoC in order to have a binding to import some IIO devices into sound cards. The series related to the IIO potentiometer device is already under review [2]. This series introduces audio-iio-aux. Its goal is to offer the binding between IIO and ASoC. It exposes attached IIO devices as ASoC auxiliary devices and allows to control them through mixer controls. On my system, the IIO device is a potentiometer and it is present in an amplifier design present in the audio path. Compare to the previous iteration https://lore.kernel.org/linux-kernel/20230421124122.324820-1-herve.codina@bootlin.com/ This v2 series mainly: - updates the binding using a simple-card subnode and handles this new subnode in the simple-card driver. - Improves existing IIO code and documentation. - Renames simple-iio-aux to audio-iio-aux and fixes the driver itself. Best regards, Hervé [1] https://lore.kernel.org/linux-kernel/20230203111422.142479-1-herve.codina@bootlin.com/ [2] https://lore.kernel.org/linux-kernel/20230421085245.302169-1-herve.codina@bootlin.com/ Changes v1 -> v2 - Patch 1 Rename simple-iio-aux to audio-iio-aux Rename invert to snd-control-invert-range Remove the /schemas/iio/iio-consumer.yaml reference Remove the unneeded '|' after description - Patch 2 (new in v2) Introduce the simple-audio-card additional-devs subnode - Patch 3 (new in v2) Check err before switch() in iio_channel_read_max() - Patch 4 (new in v2) Fix raw reads and raw writes documentation - Patch 5 (patch 2 in v1) Check err before switch() in iio_channel_read_min() Fix documentation - Patch 6 (path 3 in v1) No changes - Patch 7 (patch 4 in v1) Rename simple-iio-aux to audio-iio-aux Rename invert to snd-control-invert-range Remove the mask usage from audio_iio_aux_{get,put}_volsw helpers Use directly PTR_ERR() in dev_err_probe() parameter Remove the '!!' construction Remove of_match_ptr() - Patch 8 (new in v2) Add a missing of_node_put() in the simple-card driver - Patch 9 (new in v2) Handle additional-devs in the simple-card driver Herve Codina (9): ASoC: dt-bindings: Add audio-iio-aux ASoC: dt-bindings: simple-card: Add additional-devs subnode iio: inkern: Check error explicitly in iio_channel_read_max() iio: consumer.h: Fix raw values documentation notes iio: inkern: Add a helper to query an available minimum raw value ASoC: soc-dapm.h: Add a helper to build a DAPM widget dynamically ASoC: codecs: Add support for the generic IIO auxiliary devices ASoC: simple-card: Add missing of_node_put() in case of error ASoC: simple-card: Handle additional devices .../bindings/sound/audio-iio-aux.yaml | 64 ++++ .../bindings/sound/simple-card.yaml | 53 +++ drivers/iio/inkern.c | 75 ++++- include/linux/iio/consumer.h | 37 ++- include/sound/soc-dapm.h | 12 +- sound/soc/codecs/Kconfig | 12 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/audio-iio-aux.c | 302 ++++++++++++++++++ sound/soc/generic/simple-card.c | 53 ++- 9 files changed, 596 insertions(+), 14 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/audio-iio-aux.yaml create mode 100644 sound/soc/codecs/audio-iio-aux.c