From patchwork Wed Oct 6 16:30:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 12539747 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C95AEC43219 for ; Wed, 6 Oct 2021 16:38:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AED9E61019 for ; Wed, 6 Oct 2021 16:38:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234375AbhJFQku (ORCPT ); Wed, 6 Oct 2021 12:40:50 -0400 Received: from box.trvn.ru ([194.87.146.52]:36163 "EHLO box.trvn.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232082AbhJFQkt (ORCPT ); Wed, 6 Oct 2021 12:40:49 -0400 Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id 23C1D428D5; Wed, 6 Oct 2021 21:31:17 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1633537877; bh=uIen75qqOYkJA/WCGn3GUIYd88tAz2rU3z+nxfJYUO4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bp/iCGBd+ZdVibcUACevapvSUxO7uA6hU8HSykqvKrvDo3x0MFpDuPivp+SBECZ3A KmhkAn5RxMUj5Quiftb6rWNPBGrX5ZMilGX/9Icqdc2VA7v7RiCgffPZdWWUGbBhYo lmrn3YBYIKzaxhPQzxTXsailPW66/nnqghsqOPfMkC48/IhHLBBXZNYyEcCCd+0VWD 6PwvzqjGCIaZZW28+BuJeodTRvxr3C9OXEwivfvZFhToCDuk8dotN6Blor06xUmRt/ axNjppZ1xtP+tHyikg2O5GMuy94ffmJpfe1XjDN1Vo6d5tJtbfrIAWzM3w0/eVvIXg IF4QZKtQeSM6g== From: Nikita Travkin To: jic23@kernel.org Cc: lars@metafoo.de, robh+dt@kernel.org, stephan@gerhold.net, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nikita Travkin Subject: [PATCH 3/4] iio: light: ltr501: Add rudimentary regulator support Date: Wed, 6 Oct 2021 21:30:57 +0500 Message-Id: <20211006163058.145842-3-nikita@trvn.ru> In-Reply-To: <20211006163058.145842-1-nikita@trvn.ru> References: <20211006163058.145842-1-nikita@trvn.ru> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org On some platforms the supply regulators must be enabled before the sensor can work. Add vdd and vddio regulators for the sensor and IO bus power respectively. Signed-off-by: Nikita Travkin --- drivers/iio/light/ltr501.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c index 1830221da48d..57851c8ef1c6 100644 --- a/drivers/iio/light/ltr501.c +++ b/drivers/iio/light/ltr501.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -151,6 +152,7 @@ struct ltr501_chip_info { struct ltr501_data { struct i2c_client *client; + struct regulator_bulk_data regulators[2]; struct mutex lock_als, lock_ps; const struct ltr501_chip_info *chip_info; u8 als_contr, ps_contr; @@ -1379,6 +1381,13 @@ static const struct regmap_config ltr501_regmap_config = { .volatile_reg = ltr501_is_volatile_reg, }; +static void ltr501_disable_regulators(void *d) +{ + struct ltr501_data *data = d; + + regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators); +} + static int ltr501_powerdown(struct ltr501_data *data) { return ltr501_write_contr(data, data->als_contr & @@ -1423,6 +1432,25 @@ static int ltr501_probe(struct i2c_client *client, mutex_init(&data->lock_als); mutex_init(&data->lock_ps); + data->regulators[0].supply = "vdd"; + data->regulators[1].supply = "vddio"; + ret = devm_regulator_bulk_get(&client->dev, + ARRAY_SIZE(data->regulators), + data->regulators); + if (ret) + return dev_err_probe(&client->dev, ret, + "Failed to get regulators\n"); + + ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators), + data->regulators); + if (ret) + return ret; + + ret = devm_add_action_or_reset(&client->dev, + ltr501_disable_regulators, data); + if (ret) + return ret; + data->reg_it = devm_regmap_field_alloc(&client->dev, regmap, reg_field_it); if (IS_ERR(data->reg_it)) {