From patchwork Tue Jun 28 07:05:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cosmin Tanislav X-Patchwork-Id: 585704 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 C616BC433EF for ; Tue, 28 Jun 2022 07:06:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343741AbiF1HGe (ORCPT ); Tue, 28 Jun 2022 03:06:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43010 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343698AbiF1HGd (ORCPT ); Tue, 28 Jun 2022 03:06:33 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFDA160DA; Tue, 28 Jun 2022 00:06:31 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id fi2so23732177ejb.9; Tue, 28 Jun 2022 00:06:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=coq/7vnAq5AAKiy+JRJn8yCWHeyO1w5IBcA9B1tk73A=; b=I8P3Xi33BP3BMxfE7Od5sVWn5KHPcp3e9D02zms7oD8kMgJDEhtvNNpDjp0fjhqhQ6 e5/O12Lol3R7P/Pt0s8SoLfIDUKLn2GOAf+mjMCu81/DfohdcAZ7OSnd4UWAu7ZRyOsM ToGqMCeEI1pPKcpHLcPZMg7R8lv/Ddxyd+FZzC3a4mAMHw2Hmd1jVDZX949tHrVH09xc d6AbbeLE3/Bc7nvhfab5YothtgarpirIsY3nIDyBKuDfY2D9yWaTnvbQo9mVnevCkcRA UzOKxsoRsaADCVTC7at5m1mBeGkvCqOSPND1l5ZEZfDoZLcvrG7PmPul8GvLLUwKz0Ha lBIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=coq/7vnAq5AAKiy+JRJn8yCWHeyO1w5IBcA9B1tk73A=; b=RfXYqWiYGhkO5LCF+gdKJGh3dYCYtaNGve51lqCCaAIBj07IojsuhEEJhgz35v4h3R EgXF+c1Ei26yLYGd1lWr0lVvZ4RXf/jyiJk5R/7Mb8O3ZwquM06EqqHxg6dV+DMJAcUG WnysCOHoMFa9ONesdZrkS+n4uZYOf+G4vp0/u1KmJL7SJn+xzt+hcS2a7JMaIPGafGzv iq9vsw5tD68KlTTcnNTLWWXUT1Kp+lZOFaj1Yb3U4Y8zWUEmA1dAoVpfojZjnJxhb8OE zM93EfIclrVZTiavQ7euDeeBgEPLDdmAKIoLZqyiKRcBa/6b4KpkSbBEhA2tbnv0vOOX dD7A== X-Gm-Message-State: AJIora9iahWtMoAZkGaL5CuBeixWlR0YoYJhJllMYurFb3yDZeS+t/Gd OgjNzVlIdVd5kGaFpndk2ZA= X-Google-Smtp-Source: AGRyM1sFYa5hMPGAhi+KvUvHpnnZXMuSNpdGu5gamm+cLp/Q9Ht/DBU0nPyOIqARkRBFQgOZL2vp9A== X-Received: by 2002:a17:906:37c6:b0:70c:f9f:f0c5 with SMTP id o6-20020a17090637c600b0070c0f9ff0c5mr16716876ejc.743.1656399990436; Tue, 28 Jun 2022 00:06:30 -0700 (PDT) Received: from demon-pc.localdomain ([79.119.98.153]) by smtp.gmail.com with ESMTPSA id k11-20020a1709062a4b00b00726abf9a32bsm1834556eje.138.2022.06.28.00.06.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Jun 2022 00:06:29 -0700 (PDT) From: Cosmin Tanislav X-Google-Original-From: Cosmin Tanislav Cc: Jonathan Cameron , Rob Herring , Linus Walleij , linux-iio@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Cosmin Tanislav Subject: [PATCH v6 0/2] AD4130 Date: Tue, 28 Jun 2022 10:05:51 +0300 Message-Id: <20220628070553.3933748-1-cosmin.tanislav@analog.com> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org AD4130-8 is an ultra-low power, high precision, measurement solution for low bandwidth battery operated applications. The fully integrated AFE (Analog Front-End) includes a multiplexer for up to 16 single-ended or 8 differential inputs, PGA (Programmable Gain Amplifier), 24-bit Sigma-Delta ADC, on-chip reference and oscillator, selectable filter options, smart sequencer, sensor biasing and excitation options, diagnostics, and a FIFO buffer. V1 -> V2 * add kernel version to ABI file * merge ABI patch into driver patch * make copyright header similar to other drivers * rearrange includes * use units.h defines where possible and add unit sufix to SOFT_RESET_SLEEP define * remove ending comma to last members of enums / lists * remove unused FILTER_MAX define * use BIT macro for PIN_FN_* * rearrange SETUP_SIZE definition * group bools in ad4130_state and ad4130_chan_info * put scale_tbls definition on one line * remove newline before reg size == 0 check * put mask used as value in a variable * remove useless ret = 0 assignment * make buffer attrs oneline * use for_each_set_bit in update_scan_mode * use if else for internal reference voltage error checking * inline reference voltage check * check number of vbias pins * remove .has_int_pin = false * remove avail_len for IIO_AVAIL_RANGE * remove useless enabled_channels check in unlink_slot * remove unused AD4130_RESET_CLK_COUNT define * only call fwnode_handle_put for child in case of error * default adi,reference-select to REFIN1 * default adi,int-ref-en to false * of_irq_get_byname -> fwnode_irq_get_byname * P1 -> P2 as interrupt pin options * add missing comma in db3_freq_avail init * cast values to u64 to make math using units.h work * add datasheet reference to IRQ polarity * add comment about disabling channels in predisable * add part number prefix find_table_index * return voltage from get_ref_voltage * add datasheet reference for internal reference voltage selection * add comment explaining AIN and GPIO pin sharing * parse channel setup before parsing excitation pins * only validate excitation pin if value is not off * use FIELD_PREP for bipolar and int_ref_en * put devm_regmap_init call on one line * introduce a slot_info struct to contain setup_info for each slot * enable internal reference automatically if needed * decide mclk sel based on adi,ext-clk-freq and adi,int-clk-out * dt-bindings: use internal reference explicitly * dt-bindings: set type for adi,excitation-pin-0 * dt-bindings: set $ref for adi,vbias-pins * dt-bindings: remove minItems from interrupts property * dt-bindings: remove adi,int-ref-en default value * dt-bindings: remove adi,bipolar default value * dt-bindings: inline adi,int-ref-en description * dt-bindings: default adi,reference-select to REFIN1 * dt-bindings: clean up description for diff-channels and adi,reference-select * dt-bindings: add more text to interrupt-names description * dt-bindings: turn interrupt-names into a single string * dt-bindings: add maxItems to adi,vbias-pins V2 -> V3 * dt-bindings: add interrupt controller include to example * dt-bindings: remove $ref in diff-channels V3 -> V4: * handle watermark value as number of datum * DOUT_OR_INT -> INT * AD4130_8_NAME -> AD4130_NAME * return early in case of failure when parsing fw channel * use IIO_DMA_MINALIGN for aligning buffer * add comments for fs_to_freq and freq_to_fs * remove support for other variants because of unavailability of model ids for future chip variants * remove support for db3 frequency because of inaccuracy when calculating * remove ternary where possible * refactor defines * dt-bindings: add unevaluatedProperties: true to channel node V4 -> V5: * simplify get_ref_voltage function and move print statement to first user * inline statements not going over the 80 cols limit * simplify scale table filling * determine table length inside find table index macro * current_na -> tmp inside ad4130_parse_fw_setup * define full register set * put range register size definitions on one line * nanoamps -> nanoamp * adi,ext-clk-freq -> adi,ext-clk-freq-hz * return directly in ad4130_validate_vbias_pins * place comment regarding irq_trigger at assignment * inversed -> inverted inside irq_trigger comment * do not initialize int_clk_out * return directly in ad4130_validate_diff_channels * add () after reference to update_scan_mode in comment * use BIT() for channel offset * comment nitpicks on slot finding * return -EINVAL out of reg read for invalid sizes * place regmap at start of ad4130_state * place bools at the end of ad4130_setup_info * remove commas after terminators * dt-bindings: only allow one element in reg * dt-bindings: inline reg description * dt-bindings: remove $ref from adi,ext-clk-freq-hz V5 -> V6: * bump KernelVersion * use IIO_DEVICE_ATTR_RO * nitpick inside mutex comment * use valid_mask for validating gpios * improve DMA comment Cosmin Tanislav (2): dt-bindings: iio: adc: add AD4130 iio: adc: ad4130: add AD4130 driver .../ABI/testing/sysfs-bus-iio-adc-ad4130 | 36 + .../bindings/iio/adc/adi,ad4130.yaml | 259 +++ MAINTAINERS | 8 + drivers/iio/adc/Kconfig | 13 + drivers/iio/adc/Makefile | 1 + drivers/iio/adc/ad4130.c | 2014 +++++++++++++++++ 6 files changed, 2331 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-adc-ad4130 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4130.yaml create mode 100644 drivers/iio/adc/ad4130.c