From patchwork Wed Dec 2 09:33:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 11945415 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9EE7C83012 for ; Wed, 2 Dec 2020 09:36:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6860422203 for ; Wed, 2 Dec 2020 09:36:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387700AbgLBJge (ORCPT ); Wed, 2 Dec 2020 04:36:34 -0500 Received: from mo4-p02-ob.smtp.rzone.de ([85.215.255.80]:8905 "EHLO mo4-p02-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728186AbgLBJgd (ORCPT ); Wed, 2 Dec 2020 04:36:33 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1606901620; s=strato-dkim-0002; d=gerhold.net; h=References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=8AzvBxYHcbQK6J3mGTGm0CjFjQYtv52+YMdToRBbhW8=; b=hcJHInpzKmPtu5Io+B355PgyeEZKDsJUJQJmKMWDlXiRNl9DR4h/xNkWFo86FBFxLG tPC8Ki/2O10oTp2hBiDkSfjeFnIQkm0jZ3pOU+Va7EofMGrpQstSw0qhMNpm+E5oyIzj RDHxrpG8OZGZQBSmcBaP3Ir1CRj/RvI5JrMdxWClK+RI3dFszVZaGshVsuxnc8kXac84 76v+BJm+hL746m8e9YpMTbNU6s95rQK8vZw1wD7+fvO3WeV/iQ4YF++SPouJbm+yny8K aniM3y7VzjrNuw4D3Th27vvvTzeQlmyAyzMrKLlmGMtXS2UhXzqZ/aWwhZuaRoAtiaKH sMkQ== X-RZG-AUTH: ":P3gBZUipdd93FF5ZZvYFPugejmSTVR2nRPhVORvLd4SsytBXS7IYBkLahKxB626NJkxR" X-RZG-CLASS-ID: mo00 Received: from localhost.localdomain by smtp.strato.de (RZmta 47.3.4 SBL|AUTH) with ESMTPSA id Z061efwB29XdVue (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Wed, 2 Dec 2020 10:33:39 +0100 (CET) From: Stephan Gerhold To: Jonathan Cameron Cc: Lars-Peter Clausen , Peter Meerwald-Stadler , Rob Herring , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, "H . Nikolaus Schaller" , Linus Walleij , Stephan Gerhold Subject: [PATCH 4/4] iio: gyro: bmg160: Add rudimentary regulator support Date: Wed, 2 Dec 2020 10:33:22 +0100 Message-Id: <20201202093322.77114-4-stephan@gerhold.net> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201202093322.77114-1-stephan@gerhold.net> References: <20201202093322.77114-1-stephan@gerhold.net> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org BMG160 needs VDD and VDDIO regulators that might need to be explicitly enabled. Add some rudimentary support to obtain and enable these regulators during probe() and disable them during remove() or on the error path. Signed-off-by: Stephan Gerhold Reviewed-by: Linus Walleij --- drivers/iio/gyro/bmg160_core.c | 38 +++++++++++++++++++++++++++------- 1 file changed, 31 insertions(+), 7 deletions(-) diff --git a/drivers/iio/gyro/bmg160_core.c b/drivers/iio/gyro/bmg160_core.c index 2d5015801a75..4baa4169c5a2 100644 --- a/drivers/iio/gyro/bmg160_core.c +++ b/drivers/iio/gyro/bmg160_core.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "bmg160.h" #define BMG160_IRQ_NAME "bmg160_event" @@ -92,6 +93,7 @@ struct bmg160_data { struct regmap *regmap; + struct regulator_bulk_data regulators[2]; struct iio_trigger *dready_trig; struct iio_trigger *motion_trig; struct iio_mount_matrix orientation; @@ -1077,14 +1079,28 @@ int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq, data->irq = irq; data->regmap = regmap; + data->regulators[0].supply = "vdd"; + data->regulators[1].supply = "vddio"; + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->regulators), + data->regulators); + if (ret) + return dev_err_probe(dev, ret, "Failed to get regulators\n"); + ret = iio_read_mount_matrix(dev, "mount-matrix", &data->orientation); if (ret) return ret; + ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators), + data->regulators); + if (ret < 0) { + dev_err(dev, "Failed to enable regulators: %d\n", ret); + return ret; + } + ret = bmg160_chip_init(data); if (ret < 0) - return ret; + goto err_regulator_disable; mutex_init(&data->mutex); @@ -1107,28 +1123,32 @@ int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq, BMG160_IRQ_NAME, indio_dev); if (ret) - return ret; + goto err_regulator_disable; data->dready_trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name, indio_dev->id); - if (!data->dready_trig) - return -ENOMEM; + if (!data->dready_trig) { + ret = -ENOMEM; + goto err_regulator_disable; + } data->motion_trig = devm_iio_trigger_alloc(dev, "%s-any-motion-dev%d", indio_dev->name, indio_dev->id); - if (!data->motion_trig) - return -ENOMEM; + if (!data->motion_trig) { + ret = -ENOMEM; + goto err_regulator_disable; + } data->dready_trig->dev.parent = dev; data->dready_trig->ops = &bmg160_trigger_ops; iio_trigger_set_drvdata(data->dready_trig, indio_dev); ret = iio_trigger_register(data->dready_trig); if (ret) - return ret; + goto err_regulator_disable; data->motion_trig->dev.parent = dev; data->motion_trig->ops = &bmg160_trigger_ops; @@ -1174,6 +1194,8 @@ int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq, iio_trigger_unregister(data->dready_trig); if (data->motion_trig) iio_trigger_unregister(data->motion_trig); +err_regulator_disable: + regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators); return ret; } @@ -1200,6 +1222,8 @@ void bmg160_core_remove(struct device *dev) mutex_lock(&data->mutex); bmg160_set_mode(data, BMG160_MODE_DEEP_SUSPEND); mutex_unlock(&data->mutex); + + regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators); } EXPORT_SYMBOL_GPL(bmg160_core_remove);