From patchwork Thu Mar 2 13:49:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rasmus Villemoes X-Patchwork-Id: 13157357 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 3CE86C7EE33 for ; Thu, 2 Mar 2023 13:49:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229629AbjCBNtl (ORCPT ); Thu, 2 Mar 2023 08:49:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230059AbjCBNtb (ORCPT ); Thu, 2 Mar 2023 08:49:31 -0500 Received: from mail-lj1-x234.google.com (mail-lj1-x234.google.com [IPv6:2a00:1450:4864:20::234]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 859CD18164 for ; Thu, 2 Mar 2023 05:49:28 -0800 (PST) Received: by mail-lj1-x234.google.com with SMTP id f16so17651672ljq.10 for ; Thu, 02 Mar 2023 05:49:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rasmusvillemoes.dk; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=g+ofG8dUGNkU80FPnV9zgYPR7u97jlgEvn4xxyg8nqc=; b=FjTnBw/d3uK0G5/Bu5xpEc3T16eLRNS45XsXzqBA/NMTjVt8E3FCPFH/Px+NCN1Tv2 3FfBr12gK6XmyNZFNcjfMeQ6mYgXJCJrHjKNDZWAXJ+hNBj+tq8fvpLoBbrCvii6vCoZ 1FyGU17ZZ5ifnaW2xjNHknJPgQL7vJJtp6t/o= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=g+ofG8dUGNkU80FPnV9zgYPR7u97jlgEvn4xxyg8nqc=; b=1eq5ZcaHBXWMrWj5wpDN4TFoBvUjOX7EhVUIlDjmSqKSTGM1fgGBdSm0Fcrs4VHf44 5tOy6+pxX2C355w4/bqsO33gO1x2jCds3XnyyLiu8zzFvGZso/u/U4dDZsxmePy9Pwui KQKVy5RHdeOTk1XXqMsvjSovJaguhPtTApVyPPR4IQJLD0acTlD3auP+EW//qfIJ9dp0 3sLL3kFXZ/wBOdAApqKyM2OE+x/Qh2Ib2u5HgT5JfGVxvcn0bG/BQE9/JkFejZe9uxtO ghlcsvfUM5+a25yR2d4G+ApWY8SvSTqibA09SQuc5f73q7F6qKJZEFx5M9KmIkN0ool0 btkA== X-Gm-Message-State: AO0yUKUg3v639ciDkl48RWk7SyGX6F5zzKUnx73zJAlLygPSAzMbLm+l FsLZ7fkqTrTK+OneIcMo57xsRg== X-Google-Smtp-Source: AK7set/O8Ekt9ie7aM7GDWhsjBP5dvMfJdAo29xBF3dJcnaylSSOtFq2jwnvQZpTT12Xegj//2LX7g== X-Received: by 2002:a2e:9415:0:b0:291:90bf:1cc4 with SMTP id i21-20020a2e9415000000b0029190bf1cc4mr2841936ljh.26.1677764966880; Thu, 02 Mar 2023 05:49:26 -0800 (PST) Received: from prevas-ravi.prevas.se ([81.216.59.226]) by smtp.gmail.com with ESMTPSA id s16-20020ac25ff0000000b004cb3e97bff8sm2139088lfg.284.2023.03.02.05.49.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Mar 2023 05:49:26 -0800 (PST) From: Rasmus Villemoes To: Lars-Peter Clausen , Michael Hennerich , Cosmin Tanislav , Jonathan Cameron Cc: devicetree@vger.kernel.org, Rob Herring , Rasmus Villemoes , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] iio: ad74413r: wire up support for drive-strength-microamp property Date: Thu, 2 Mar 2023 14:49:21 +0100 Message-Id: <20230302134922.1120217-3-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230302134922.1120217-1-linux@rasmusvillemoes.dk> References: <20230302134922.1120217-1-linux@rasmusvillemoes.dk> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Use the value specified in the channel configuration node to populate the DIN_SINK field of the DIN_CONFIGx register. Signed-off-by: Rasmus Villemoes --- drivers/iio/addac/ad74413r.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/iio/addac/ad74413r.c b/drivers/iio/addac/ad74413r.c index f32c8c2fb26d..cbf0f66fdc74 100644 --- a/drivers/iio/addac/ad74413r.c +++ b/drivers/iio/addac/ad74413r.c @@ -39,6 +39,7 @@ struct ad74413r_chip_info { struct ad74413r_channel_config { u32 func; + u32 drive_strength; bool gpo_comparator; bool initialized; }; @@ -111,6 +112,7 @@ struct ad74413r_state { #define AD74413R_REG_DIN_CONFIG_X(x) (0x09 + (x)) #define AD74413R_DIN_DEBOUNCE_MASK GENMASK(4, 0) #define AD74413R_DIN_DEBOUNCE_LEN BIT(5) +#define AD74413R_DIN_SINK_MASK GENMASK(9, 6) #define AD74413R_REG_DAC_CODE_X(x) (0x16 + (x)) #define AD74413R_DAC_CODE_MAX GENMASK(12, 0) @@ -261,6 +263,19 @@ static int ad74413r_set_comp_debounce(struct ad74413r_state *st, val); } +static int ad74413r_set_comp_drive_strength(struct ad74413r_state *st, + unsigned int offset, + unsigned int strength) +{ + if (strength > 1800) + strength = 1800; + + return regmap_update_bits(st->regmap, AD74413R_REG_DIN_CONFIG_X(offset), + AD74413R_DIN_SINK_MASK, + FIELD_PREP(AD74413R_DIN_SINK_MASK, strength / 120)); +} + + static void ad74413r_gpio_set(struct gpio_chip *chip, unsigned int offset, int val) { @@ -1190,6 +1205,9 @@ static int ad74413r_parse_channel_config(struct iio_dev *indio_dev, config->gpo_comparator = fwnode_property_read_bool(channel_node, "adi,gpo-comparator"); + fwnode_property_read_u32(channel_node, "drive-strength-microamp", + &config->drive_strength); + if (!config->gpo_comparator) st->num_gpo_gpios++; @@ -1269,6 +1287,7 @@ static int ad74413r_setup_gpios(struct ad74413r_state *st) unsigned int gpo_gpio_i = 0; unsigned int i; u8 gpo_config; + u32 strength; int ret; for (i = 0; i < AD74413R_CHANNEL_MAX; i++) { @@ -1285,6 +1304,11 @@ static int ad74413r_setup_gpios(struct ad74413r_state *st) config->func == CH_FUNC_DIGITAL_INPUT_LOOP_POWER) st->comp_gpio_offsets[comp_gpio_i++] = i; + strength = config->drive_strength; + ret = ad74413r_set_comp_drive_strength(st, i, strength); + if (ret) + return ret; + ret = ad74413r_set_gpo_config(st, i, gpo_config); if (ret) return ret;