From patchwork Mon Dec 6 09:33:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 12657871 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 A9EA1C433FE for ; Mon, 6 Dec 2021 09:35:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241142AbhLFJid (ORCPT ); Mon, 6 Dec 2021 04:38:33 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:33431 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241139AbhLFJiH (ORCPT ); Mon, 6 Dec 2021 04:38:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1638783278; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=RCI/2xm84dyYISbFEC9/hQrlI+8v3ywGqx6ibk46P7M=; b=TxDk4AU0X+vQQqvPy43G3k5ga91jkrhOcv5ZpMFm+DvcvqFKKX9WYCf7GbR1+JDXtClo8P vd0erkmshziUWXQWmhpKyrdAPulRjFMCe3ywg0seGgxlHETpI4Tbnv3inBx8uyK6hOdX7N W2sQjaIFE2Wjgm4931yG4YfW5fDhxoM= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-58-WjWdzNBbP8KCnhz47pY_0g-1; Mon, 06 Dec 2021 04:34:33 -0500 X-MC-Unique: WjWdzNBbP8KCnhz47pY_0g-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DDC6D101F004; Mon, 6 Dec 2021 09:34:30 +0000 (UTC) Received: from x1.localdomain.com (unknown [10.39.194.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id 504375E24E; Mon, 6 Dec 2021 09:34:27 +0000 (UTC) From: Hans de Goede To: "Rafael J . Wysocki" , Mika Westerberg , Mark Gross , Andy Shevchenko , Wolfram Sang , Lee Jones , Sebastian Reichel , MyungJoo Ham , Chanwoo Choi , Ard Biesheuvel Cc: Hans de Goede , Len Brown , linux-acpi@vger.kernel.org, Yauhen Kharuzhy , Tsuchiya Yuto , platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, Andy Shevchenko Subject: [PATCH v4 10/20] power: supply: bq25890: Add support for registering the Vbus boost converter as a regulator Date: Mon, 6 Dec 2021 10:33:08 +0100 Message-Id: <20211206093318.45214-11-hdegoede@redhat.com> In-Reply-To: <20211206093318.45214-1-hdegoede@redhat.com> References: <20211206093318.45214-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The bq25890_charger code supports enabling/disabling the boost converter based on usb-phy notifications. But the usb-phy framework is not used on all boards/platforms. At support for registering the Vbus boost converter as a standard regulator when there is no usb-phy on the board. Also add support for providing regulator_init_data through platform_data for use on boards where device-tree is not used and the platform code must thus provide the regulator_init_data. Reviewed-by: Andy Shevchenko Signed-off-by: Hans de Goede --- Changes in v2: - When the usb-phy framework is not used, turn off the Vboost regulator on shutdown - Some minor code-tweaks based on Andy's review --- drivers/power/supply/bq25890_charger.c | 80 ++++++++++++++++++++++++++ include/linux/power/bq25890_charger.h | 15 +++++ 2 files changed, 95 insertions(+) create mode 100644 include/linux/power/bq25890_charger.h diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c index 162bffb02410..637cdd3b6b11 100644 --- a/drivers/power/supply/bq25890_charger.c +++ b/drivers/power/supply/bq25890_charger.c @@ -8,7 +8,9 @@ #include #include #include +#include #include +#include #include #include #include @@ -876,6 +878,45 @@ static int bq25890_usb_notifier(struct notifier_block *nb, unsigned long val, return NOTIFY_OK; } +#ifdef CONFIG_REGULATOR +static int bq25890_vbus_enable(struct regulator_dev *rdev) +{ + struct bq25890_device *bq = rdev_get_drvdata(rdev); + + return bq25890_set_otg_cfg(bq, 1); +} + +static int bq25890_vbus_disable(struct regulator_dev *rdev) +{ + struct bq25890_device *bq = rdev_get_drvdata(rdev); + + return bq25890_set_otg_cfg(bq, 0); +} + +static int bq25890_vbus_is_enabled(struct regulator_dev *rdev) +{ + struct bq25890_device *bq = rdev_get_drvdata(rdev); + + return bq25890_field_read(bq, F_OTG_CFG); +} + +static const struct regulator_ops bq25890_vbus_ops = { + .enable = bq25890_vbus_enable, + .disable = bq25890_vbus_disable, + .is_enabled = bq25890_vbus_is_enabled, +}; + +static const struct regulator_desc bq25890_vbus_desc = { + .name = "usb_otg_vbus", + .of_match = "usb-otg-vbus", + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .ops = &bq25890_vbus_ops, + .fixed_uV = 5000000, + .n_voltages = 1, +}; +#endif + static int bq25890_get_chip_version(struct bq25890_device *bq) { int id, rev; @@ -1075,6 +1116,22 @@ static int bq25890_probe(struct i2c_client *client, bq->usb_nb.notifier_call = bq25890_usb_notifier; usb_register_notifier(bq->usb_phy, &bq->usb_nb); } +#ifdef CONFIG_REGULATOR + else { + struct bq25890_platform_data *pdata = dev_get_platdata(dev); + struct regulator_config cfg = { }; + struct regulator_dev *reg; + + cfg.dev = dev; + cfg.driver_data = bq; + if (pdata) + cfg.init_data = pdata->regulator_init_data; + + reg = devm_regulator_register(dev, &bq25890_vbus_desc, &cfg); + if (IS_ERR(reg)) + return dev_err_probe(dev, PTR_ERR(reg), "registering regulator"); + } +#endif ret = bq25890_power_supply_init(bq); if (ret < 0) { @@ -1113,6 +1170,28 @@ static int bq25890_remove(struct i2c_client *client) return 0; } +static void bq25890_shutdown(struct i2c_client *client) +{ + struct bq25890_device *bq = i2c_get_clientdata(client); + + /* + * TODO this if + return should probably be removed, but that would + * introduce a function change for boards using the usb-phy framework. + * This needs to be tested on such a board before making this change. + */ + if (!IS_ERR_OR_NULL(bq->usb_phy)) + return; + + /* + * Turn off the 5v Boost regulator which outputs Vbus to the device's + * Micro-USB or Type-C USB port. Leaving this on drains power and + * this avoids the PMIC on some device-models seeing this as Vbus + * getting inserted after shutdown, causing the device to immediately + * power-up again. + */ + bq25890_set_otg_cfg(bq, 0); +} + #ifdef CONFIG_PM_SLEEP static int bq25890_suspend(struct device *dev) { @@ -1192,6 +1271,7 @@ static struct i2c_driver bq25890_driver = { }, .probe = bq25890_probe, .remove = bq25890_remove, + .shutdown = bq25890_shutdown, .id_table = bq25890_i2c_ids, }; module_i2c_driver(bq25890_driver); diff --git a/include/linux/power/bq25890_charger.h b/include/linux/power/bq25890_charger.h new file mode 100644 index 000000000000..c706ddb77a08 --- /dev/null +++ b/include/linux/power/bq25890_charger.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Platform data for the TI bq25890 battery charger driver. + */ + +#ifndef _BQ25890_CHARGER_H_ +#define _BQ25890_CHARGER_H_ + +struct regulator_init_data; + +struct bq25890_platform_data { + const struct regulator_init_data *regulator_init_data; +}; + +#endif