From patchwork Mon Mar 7 12:21:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Codrin Ciubotariu X-Patchwork-Id: 12771740 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 A7F10C433EF for ; Mon, 7 Mar 2022 12:29:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=5sXeMbCAonWQ2aNBQDvgkI4QvXrVQNreWqQKZtu+YJE=; b=vUOKemre8//Lk9 4XNfXYq9lDm1xEwmECbrbiSvDurv3/bfoiQphrv46XJT+s8I8RBafn/XDVq0liju/s9YDsUXiSrqA E0r1uSGjTr2PHEYmU1S08Jqg9NfgYll3qftz9oV43EW4Tjt420nqhIa7E68Cmprx534Qt4GzznvGs S5EIVNhk+bPwtz3XtPHB/t7FZ9/Vt3Mgy7QU7XvpmHaSTDU/7Kj+6yrJAav8r8K9DddVQrSEZkMx9 oC+5nM/09qRo8bez3TaSJOPwOn1UkFBidkhFoIrELaKIRsiOTHrvHwTQ5Al97aGbKHwqiRMPGLj+7 llWduf60U41v8eJO2How==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRCTZ-00Hacn-KT; Mon, 07 Mar 2022 12:28:35 +0000 Received: from esa.microchip.iphmx.com ([68.232.153.233]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nRCNu-00HY8F-TO for linux-arm-kernel@lists.infradead.org; Mon, 07 Mar 2022 12:22:44 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1646655762; x=1678191762; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=spsawEYSjp/d7MCTT2764LMfhdtbBorYSiNJakeTrHw=; b=Pma47022qFRv3nZirzjyZXQZHw7KzyIlAuD85WJU4tlNkEXYu7MQFv/h UDAzwHAvmMYf9MKMK+3BEgNrsKFfl443sqh6Zkzl35J1I2dgiKVyTaOY7 ttu3qvmluAjnI3YkBtiiizJfHwyiQyaZttufP+VeUYmUzk/sKDk3RNx51 MVKowkUYvHYDglyJoJFrvRiapF4A5sIu+jVTGW2R+HRWgOc+hf1/tGn2K BK/GM5zmqkYnyFrWMmlveMtjdji4MxePQCDFE1aPb9smp//9jV+tqhPmU nvZ0XgWnx6qiiiI+mqwHsBvqxBl3qdc2Mo0ShFjwqBib9IX0dMdyRDg4i Q==; X-IronPort-AV: E=Sophos;i="5.90,162,1643698800"; d="scan'208";a="164766682" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 07 Mar 2022 05:22:42 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Mon, 7 Mar 2022 05:22:41 -0700 Received: from rob-ult-m19940.amer.actel.com (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Mon, 7 Mar 2022 05:22:38 -0700 From: Codrin Ciubotariu To: , , , Subject: [PATCH v3 0/6] Add driver for SAMA7G5's PDMC Date: Mon, 7 Mar 2022 14:21:56 +0200 Message-ID: <20220307122202.2251639-1-codrin.ciubotariu@microchip.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220307_042243_001150_82706B5B X-CRM114-Status: GOOD ( 14.39 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lars@metafoo.de, robh+dt@kernel.org, tiwai@suse.com, broonie@kernel.org, Codrin Ciubotariu , perex@perex.cz Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patch series adds support for Pulse Density Microphone Controller (PDMC), present on Microchip's SAMA7G5. The PDMC interfaces up to 4 digital microphones having Pulse Density Modulated (PDM) outputs. It generates a single clock line and samples 1 or 2 data lines. The signal path includes an audio grade programmable decimation filter and outputs 24-bit audio words. The source of each channel can be independently defined as PDMC_DS0 or PDMC_DS1, sampled at the rising or falling edge of PDMC_CLK. The patch series starts with a fix on the ASoC DMA engine support. Then continues with the bindings and the driver of PDMC. It is followed by the DT nodes for SAMA7G5 and SAMA7G5-EK. In the end, the drivers for PDMC and PDM microphones are enabled in sama7_defconfig. Changes in v3: - addressed new DT bindings comments from Krzysztof Kozlowski Changes in v2: - addressed DT bindings comments from Krzysztof Kozlowski Codrin Ciubotariu (6): ASoC: dmaengine: do not use a NULL prepare_slave_config() callback ASoC: dt-bindings: Document Microchip's PDMC ASoC: atmel: mchp-pdmc: add PDMC driver ARM: dts: at91: sama7g5: add nodes for PDMC ARM: dts: at91: sama7g5ek: add node for PDMC0 ARM: configs: at91: sama7_defconfig: add MCHP PDMC and DMIC drivers .../bindings/sound/microchip,pdmc.yaml | 100 ++ arch/arm/boot/dts/at91-sama7g5ek.dts | 21 +- arch/arm/boot/dts/sama7g5.dtsi | 24 + arch/arm/configs/sama7_defconfig | 2 + include/dt-bindings/sound/microchip,pdmc.h | 13 + sound/soc/atmel/Kconfig | 16 + sound/soc/atmel/Makefile | 2 + sound/soc/atmel/mchp-pdmc.c | 1084 +++++++++++++++++ sound/soc/soc-generic-dmaengine-pcm.c | 6 +- 9 files changed, 1264 insertions(+), 4 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/microchip,pdmc.yaml create mode 100644 include/dt-bindings/sound/microchip,pdmc.h create mode 100644 sound/soc/atmel/mchp-pdmc.c