From patchwork Tue Aug 2 10:30:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Crt Mori X-Patchwork-Id: 12934490 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 69B6AC19F2C for ; Tue, 2 Aug 2022 10:30:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234791AbiHBKae (ORCPT ); Tue, 2 Aug 2022 06:30:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236562AbiHBKab (ORCPT ); Tue, 2 Aug 2022 06:30:31 -0400 Received: from mail-ed1-x529.google.com (mail-ed1-x529.google.com [IPv6:2a00:1450:4864:20::529]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63CCA6594 for ; Tue, 2 Aug 2022 03:30:29 -0700 (PDT) Received: by mail-ed1-x529.google.com with SMTP id a89so17040394edf.5 for ; Tue, 02 Aug 2022 03:30:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=melexis.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=+0qVYGdGmkDnAqj07TMHGbTEwacGQLQsY1ouzYx3iFU=; b=IVkRC6sayTaFbFWfFibA1j9ARFdJdDw30xobaUQQ2+aYumlAk1SHC6HBwJ4f4235Yu dpQ/90g9Y7hMnCnEOfviYiyZZFFlQMICVLy5mga4rHAl80htC6snRsh0WmVIHpNhanNK NIZq7HQtaj6W2Ffrv/UgUwK7UBXKT7M04HaFICS/veUYrfUbG5/3KaSKXD7qVyFUAPvf 7LqyAlarN1o1gjLUyaUk6Qug1bvEg8W+WqUG128CcFjfzLaC/7w/zuw/psPj14lK1eez 3g8Ivy6EJZBY4JrenA29ypPSISEH/V/FZP9eqzNvOpAshSKTjnjpqM2tLgMHZpAXahXv +kwA== 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=+0qVYGdGmkDnAqj07TMHGbTEwacGQLQsY1ouzYx3iFU=; b=T3QZ6D9rBcWdBhrZ95EN8hEG6p/18mR6iB7NNVV+9Kpl0KWhRUSQqcNlulJF3sjNe0 QckHadEF1LmDlClvxOAe6bv7DL/mE0NXUbRAhA5rQSoaSuyo3lA+X5QMwJUYhjQCj+oe EaKBKfbFZdItYvvO8e/VjIUyrwBntfyNhLjFWUABLi+PBciz8IE9FyRGsr7L20kb3NAo uYbzZc5D/0vO8g/J8UqrsDIkEeV3KfvUrBenu6G6a0Be+7/qvT3xig4zmr0yrYrabjsa JN+ieVgq3PyyoPuzXN9DDn82wqE7WCafWgDPZE7Cq3EjjhvD7gw1H5WBKZaIvpcl5SSA iyhA== X-Gm-Message-State: ACgBeo3jvIiN3Um2l3LBc9lg5BriXGY82coiN5Ho7HRKqvv9l8TuJ7Jm p9zit4l2FtBuyOudl1DhN4gX0Q== X-Google-Smtp-Source: AA6agR5DkAlJcNs4SM72SBs4RkRsSrmU0mqmkOmHi1/W/2RJyhEPCUCk6WY5HbfQttNpAT61Coms/Q== X-Received: by 2002:aa7:d513:0:b0:43d:5c81:4f71 with SMTP id y19-20020aa7d513000000b0043d5c814f71mr13932376edq.308.1659436228236; Tue, 02 Aug 2022 03:30:28 -0700 (PDT) Received: from localhost.localdomain (ptr-4xh0y3uhn87zojrdbwi.18120a2.ip6.access.telenet.be. [2a02:1810:a44c:8f00:733c:5cdf:8a1a:e482]) by smtp.gmail.com with ESMTPSA id q21-20020a170906941500b00715a02874acsm1509750ejx.35.2022.08.02.03.30.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Aug 2022 03:30:27 -0700 (PDT) From: Crt Mori To: Jonathan Cameron Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Lars-Peter Clausen , Crt Mori Subject: [PATCH 1/2] iio: temperature: mlx90632 Add supply regulator to sensor Date: Tue, 2 Aug 2022 12:30:22 +0200 Message-Id: <20220802103022.423328-1-cmo@melexis.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Provide possibility to toggle power supply to the sensor so that user can optimize their setup and not have the sensor constantly powered. Signed-off-by: Crt Mori --- drivers/iio/temperature/mlx90632.c | 52 ++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/drivers/iio/temperature/mlx90632.c b/drivers/iio/temperature/mlx90632.c index 7ee7ff8047a4..e6e5e649a9f9 100644 --- a/drivers/iio/temperature/mlx90632.c +++ b/drivers/iio/temperature/mlx90632.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include @@ -128,6 +129,7 @@ * calculations * @object_ambient_temperature: Ambient temperature at object (might differ of * the ambient temperature of sensor. + * @regulator: Regulator of the device */ struct mlx90632_data { struct i2c_client *client; @@ -136,6 +138,7 @@ struct mlx90632_data { u16 emissivity; u8 mtyp; u32 object_ambient_temperature; + struct regulator *regulator; }; static const struct regmap_range mlx90632_volatile_reg_range[] = { @@ -841,6 +844,37 @@ static int mlx90632_wakeup(struct mlx90632_data *data) return mlx90632_pwr_continuous(data->regmap); } +static void mlx90632_disable_regulator(void *_data) +{ + struct mlx90632_data *data = _data; + int ret; + + ret = regulator_disable(data->regulator); + if (ret < 0) + dev_err(regmap_get_device(data->regmap), + "Failed to disable power regulator: %d\n", ret); +} + +static int mlx90632_enable_regulator(struct mlx90632_data *data) +{ + int ret; + + ret = regulator_set_voltage(data->regulator, 3200000, 3600000); + if (ret < 0) { + dev_err(regmap_get_device(data->regmap), "Failed to set voltage on regulator!\n"); + return ret; + } + + ret = regulator_enable(data->regulator); + if (ret < 0) { + dev_err(regmap_get_device(data->regmap), "Failed to enable power regulator!\n"); + } else { + /* Give the device a little bit of time to start up. */ + msleep(MLX90632_SLEEP_DELAY_MS); + } + return ret; +} + static int mlx90632_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -876,6 +910,24 @@ static int mlx90632_probe(struct i2c_client *client, indio_dev->channels = mlx90632_channels; indio_dev->num_channels = ARRAY_SIZE(mlx90632_channels); + mlx90632->regulator = devm_regulator_get(&client->dev, "vdd"); + if (!IS_ERR(mlx90632->regulator)) { + ret = mlx90632_enable_regulator(mlx90632); + if (ret < 0) { + dev_err(&client->dev, "Failed to enable regulator!\n"); + return ret; + } + + ret = devm_add_action_or_reset(&client->dev, + mlx90632_disable_regulator, + mlx90632); + if (ret < 0) { + dev_err(&client->dev, "Failed to setup regulator cleanup action %d\n", + ret); + return ret; + } + } + ret = mlx90632_wakeup(mlx90632); if (ret < 0) { dev_err(&client->dev, "Wakeup failed: %d\n", ret);