From patchwork Mon Mar 7 10:04:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Codrin Ciubotariu X-Patchwork-Id: 12771473 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 A74A6C433F5 for ; Mon, 7 Mar 2022 10:07:09 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 737CE16A4; Mon, 7 Mar 2022 11:06:17 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 737CE16A4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1646647627; bh=g+E2cqWn9Vq/Ut2H92s1dRBvdhhumC0Wle7tlrJx1G8=; h=From:To:Subject:Date:Cc:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=X4bspBeOrcipWCiPaij7t66nvtfNgW6nDhbqg6v/XKz3+n76LlmmrvcBb4fQ75DWW M6WnCg/7J6eQrrJYkpNvxolcyVLST4C9lZuDFLuujRSMzM8/IO22ypyqH0rpV01xCg lTKF92cmOE5x7a+OUhKTaAlxNCWw1opwH7UGsah8= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id E0D29F80159; Mon, 7 Mar 2022 11:06:16 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 46C4FF800E9; Mon, 7 Mar 2022 11:06:15 +0100 (CET) Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id E3153F800E9 for ; Mon, 7 Mar 2022 11:06:10 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz E3153F800E9 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="14jBiRsL" DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1646647573; x=1678183573; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=g+E2cqWn9Vq/Ut2H92s1dRBvdhhumC0Wle7tlrJx1G8=; b=14jBiRsLoqHmykQeFbV6tfohfopfVqankARiFYX9gQqBDNLFuRQo51ud Vcv2qHisCyolAJvFJCzz71C5aFci6w2G1nF/cPz4KnEdatcDkf2HQ7TEm BK8pcnIlDQFfFCL6GaDU/0KPKzOkVUUJ2fBZ7XKNElDuq0O6h+q4VxBn4 SZy8tAgWUnua8plGICjU5YwXuJ+aEORcQ1FkrQrTQz0wablb2ilpKiBte 2yVCkx2KRo0lp3106ZH0UWDSuasgi5xOgwpYQFphMNTOOHKc2qM91szZ1 S9oQBSERcyYgSYZcDZStt6TVKsOHovZEPps9QU9dPibgEku8fsX4gJBMX A==; X-IronPort-AV: E=Sophos;i="5.90,161,1643698800"; d="scan'208";a="88045514" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa6.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 07 Mar 2022 03:06:07 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) 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 03:05:56 -0700 Received: from rob-ult-m19940.amer.actel.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Mon, 7 Mar 2022 03:05:53 -0700 From: Codrin Ciubotariu To: , , , Subject: [PATCH v2 0/6] Add driver for SAMA7G5's PDMC Date: Mon, 7 Mar 2022 12:04:22 +0200 Message-ID: <20220307100428.2227511-1-codrin.ciubotariu@microchip.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Cc: lars@metafoo.de, nicolas.ferre@microchip.com, robh+dt@kernel.org, tiwai@suse.com, broonie@kernel.org, Codrin Ciubotariu X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" 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 v2: - addressed 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 | 99 ++ 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, 1263 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