From patchwork Sun Nov 10 19:24:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dzmitry Sankouski X-Patchwork-Id: 13870035 Received: from mail-ej1-f42.google.com (mail-ej1-f42.google.com [209.85.218.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D74CD154BFE for ; Sun, 10 Nov 2024 19:24:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731266674; cv=none; b=onpur9WF8jMK3ifVxdgr6cxzxt20fe2CZJR3WtQtvgsMp369ywjA+ZTKf7CCt9fwQQwjzrkushMcT6CyX8Gyx175oSM+msnf11FUyed1lCE4GN1HU1AIhaO0SuSme/ynJxh5/juE3mvFzJnZX7U1vhxQYPy16iEaLjp8w9+XEEI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731266674; c=relaxed/simple; bh=U4A1URsY+DSB9fqZhsXbXU4iN6/BssEpg8gHHdYuWhI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=FLKgIbDMwqElIM9F+DdU7hg8Ey95jNficMLrl7yBaLTZedAhtdgBhIow3w/X6uIgubFH5OdPFUBc+RGJDJV8PgJ6yXB5Rj5W4E3A75LXPoFXwKAzwgUeMpbJuxNOaR1CnUarUEEpddcVgFxB3aUqQDaHI1/pkG5IgWKE/NQIu8U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=H/dw8iAv; arc=none smtp.client-ip=209.85.218.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="H/dw8iAv" Received: by mail-ej1-f42.google.com with SMTP id a640c23a62f3a-a99f646ff1bso595165066b.2 for ; Sun, 10 Nov 2024 11:24:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1731266671; x=1731871471; darn=lists.linux.dev; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=QzjTpF4vcCvC+88m4NTYCvpBKv5iwpeXsY67V7asRZs=; b=H/dw8iAvZyt5s6PW+9WmU3oi/RQ1II58H+/kZYTFXFU1Unhmf4iUB4RnsLnqnDCt0Y 4FifSKj8fLmerB0X3mx5euHdoN6/HghkPbgVZArMN5aszyxaSnkwoGAzoyh0qWTSx8wL QEnX+YFk+5eEJi+xszKxwnT5vkAZaBUZaX6s44dCzmmyPv4FG65oC0W7nz1pyT0RC663 BeE/3gnhaWP+WoPdE8vrcB8TtlKaW/WxxvxvKBR0pl4XY6jCq7sXUjnPNmhKArOdGiLh TEU8FLcLAUg3K/YHWokmlfH9Erj3b++qFJAF/jYAzq02lCAmNWH9N6vJHvcGCGmeTkzU iwTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731266671; x=1731871471; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QzjTpF4vcCvC+88m4NTYCvpBKv5iwpeXsY67V7asRZs=; b=vd3EZJjHv7vvnW5oN27LddXaUk5TifhEXK1mNz4mI9JclIt8FGlY+BYuqEDy72t5sK q9DDom4KuUnuRsVQS7qW8P8veqSG6Z0txUcQDCaqDVSlT2ZovZG8HboiNWOAyWyeW9il +NmTaQ40t2FUaUtxFeZyXZ2ssixsmHyXlsAXRXXJjbZS3K70CfemCrfMc4o4uhOsup6E /yCqHR7GLdX+8RwxYznDD+DpDRmCZ/yMhwn2uDjx5hSVZMeAuhqr7GcxJ+alpaQocnAr xVSfMXdIB8kyouuRg1pkMY7iTjT9zX19QMfENxX1iubpZyeTEfpfhDbrsEs9KIQNej/7 wZbw== X-Forwarded-Encrypted: i=1; AJvYcCWNJtEZKNJj7hXqPLcH/o+LDgOoTgMLQOGKEIRM5cS8JumRjP6JbZ1+H2WPHuFDTu8DBjg=@lists.linux.dev X-Gm-Message-State: AOJu0YxI75pwLYCQKn6dgfCKYnRmeD8FoEB8VyFe+h3ATlbfklgEHrxy GyctDVUtp/7/qX5rZNEQpAO06ya9zOi1I3n3PRbpm7zUQCe4bL5z X-Google-Smtp-Source: AGHT+IFHsrzKAH1JXGqmrjEG47YYUuWxOy0DeShOLNpqUqSJjuxWTT1PZUGZb3HouVX3vdnd7BOhRw== X-Received: by 2002:a17:907:7f28:b0:a9a:5cf8:9e40 with SMTP id a640c23a62f3a-a9eeff10a14mr923178466b.24.1731266670951; Sun, 10 Nov 2024 11:24:30 -0800 (PST) Received: from [127.0.1.1] (leased-line-46-53-189-50.telecom.by. [46.53.189.50]) by smtp.googlemail.com with ESMTPSA id a640c23a62f3a-a9ee0e0fabesm502497666b.174.2024.11.10.11.24.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 Nov 2024 11:24:29 -0800 (PST) From: Dzmitry Sankouski Date: Sun, 10 Nov 2024 22:24:16 +0300 Subject: [PATCH v2 2/2] power: supply: max17042: add platform driver variant Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241108-b4-max17042-v2-2-f058f7a16bab@gmail.com> References: <20241108-b4-max17042-v2-0-f058f7a16bab@gmail.com> In-Reply-To: <20241108-b4-max17042-v2-0-f058f7a16bab@gmail.com> To: Hans de Goede , Krzysztof Kozlowski , Marek Szyprowski , Sebastian Krzyszkowiak , Purism Kernel Team , Sebastian Reichel , Rob Herring , Conor Dooley , Alim Akhtar , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Bjorn Andersson , Konrad Dybcio Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, imx@lists.linux.dev, linux-arm-msm@vger.kernel.org, Dzmitry Sankouski X-Mailer: b4 0.12.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1731266662; l=5546; i=dsankouski@gmail.com; s=20240619; h=from:subject:message-id; bh=U4A1URsY+DSB9fqZhsXbXU4iN6/BssEpg8gHHdYuWhI=; b=swSnXIKrCHvZ5yseK48cwBu0mSP/TUGzwXb8VhRn0lHC1PwRDPUPLDuPb9x3Y5JunOH2lOS9s 2asjCJJ555aCA3CYUHrWF0g0UhPt+3BUGGw3zNgbvGaWX3mirK5TGs9 X-Developer-Key: i=dsankouski@gmail.com; a=ed25519; pk=YJcXFcN1EWrzBYuiE2yi5Mn6WLn6L1H71J+f7X8fMag= Maxim PMICs may include fuel gauge with additional features, which is out of single Linux power supply driver scope. For example, in max77705 PMIC fuelgauge has additional registers, like IIN_REG, VSYS_REG, ISYS_REG. Those needed to measure PMIC input current, system voltage and current respectively. Those measurements cannot be bound to any of fuelgauge properties. The solution here add and option to use max17042 driver as a MFD sub device, thus allowing any additional functionality be implemented as another sub device. This will help to reduce code duplication in MFD fuel gauge drivers. Signed-off-by: Dzmitry Sankouski --- drivers/power/supply/max17042_battery.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 83 insertions(+), 14 deletions(-) diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c index 99bf6915aa23..e78c177802db 100644 --- a/drivers/power/supply/max17042_battery.c +++ b/drivers/power/supply/max17042_battery.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -1029,13 +1030,12 @@ static const struct power_supply_desc max17042_no_current_sense_psy_desc = { .num_properties = ARRAY_SIZE(max17042_battery_props) - 2, }; -static int max17042_probe(struct i2c_client *client) +static int max17042_probe(struct i2c_client *client, enum max170xx_chip_type chip_type) { - const struct i2c_device_id *id = i2c_client_get_device_id(client); + pr_info("do probe!\n"); struct i2c_adapter *adapter = client->adapter; const struct power_supply_desc *max17042_desc = &max17042_psy_desc; struct power_supply_config psy_cfg = {}; - const struct acpi_device_id *acpi_id = NULL; struct device *dev = &client->dev; struct max17042_chip *chip; int ret; @@ -1050,15 +1050,6 @@ static int max17042_probe(struct i2c_client *client) return -ENOMEM; chip->client = client; - if (id) { - chip->chip_type = id->driver_data; - } else { - acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev); - if (!acpi_id) - return -ENODEV; - - chip->chip_type = acpi_id->driver_data; - } chip->regmap = devm_regmap_init_i2c(client, &max17042_regmap_config); if (IS_ERR(chip->regmap)) { dev_err(&client->dev, "Failed to initialize regmap\n"); @@ -1139,6 +1130,40 @@ static int max17042_probe(struct i2c_client *client) return 0; } +static int max17042_i2c_probe(struct i2c_client *client) +{ + pr_info("i2c probe!\n"); + const struct i2c_device_id *id = i2c_client_get_device_id(client); + const struct acpi_device_id *acpi_id = NULL; + struct device *dev = &client->dev; + enum max170xx_chip_type chip_type; + + if (id) { + chip_type = id->driver_data; + } else { + acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev); + if (!acpi_id) + return -ENODEV; + + chip_type = acpi_id->driver_data; + } + + return max17042_probe(client, chip_type); +} + + +static int max17042_platform_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct i2c_client *i2c = dev_get_platdata(dev); + const struct platform_device_id *id = platform_get_device_id(pdev); + + if (!i2c) + return -EINVAL; + + return max17042_probe(i2c, id->driver_data); +} + #ifdef CONFIG_PM_SLEEP static int max17042_suspend(struct device *dev) { @@ -1204,6 +1229,16 @@ static const struct i2c_device_id max17042_id[] = { }; MODULE_DEVICE_TABLE(i2c, max17042_id); +static const struct platform_device_id max17042_platform_id[] = { + { "max17042", MAXIM_DEVICE_TYPE_MAX17042 }, + { "max17047", MAXIM_DEVICE_TYPE_MAX17047 }, + { "max17050", MAXIM_DEVICE_TYPE_MAX17050 }, + { "max17055", MAXIM_DEVICE_TYPE_MAX17055 }, + { "max77849-battery", MAXIM_DEVICE_TYPE_MAX17047 }, + { } +}; +MODULE_DEVICE_TABLE(platform, max17042_platform_id); + static struct i2c_driver max17042_i2c_driver = { .driver = { .name = "max17042", @@ -1211,10 +1246,44 @@ static struct i2c_driver max17042_i2c_driver = { .of_match_table = of_match_ptr(max17042_dt_match), .pm = &max17042_pm_ops, }, - .probe = max17042_probe, + .probe = max17042_i2c_probe, .id_table = max17042_id, }; -module_i2c_driver(max17042_i2c_driver); + +static struct platform_driver max17042_platform_driver = { + .driver = { + .name = "max17042", + .acpi_match_table = ACPI_PTR(max17042_acpi_match), + .of_match_table = of_match_ptr(max17042_dt_match), + .pm = &max17042_pm_ops, + }, + .probe = max17042_platform_probe, + .id_table = max17042_platform_id, +}; + +static int __init __driver_max17042_platform_init(void) +{ + int ret = 0; + + ret = platform_driver_register(&max17042_platform_driver); + + if (ret) { + platform_driver_unregister(&max17042_platform_driver); + return ret; + } + + ret = i2c_add_driver(&max17042_i2c_driver); + + return ret; +} +module_init(__driver_max17042_platform_init); + +static void __exit __driver_max17042_platform_exit(void) +{ + i2c_del_driver(&max17042_i2c_driver); + platform_driver_unregister(&max17042_platform_driver); +} +module_exit(__driver_max17042_platform_exit); MODULE_AUTHOR("MyungJoo Ham "); MODULE_DESCRIPTION("MAX17042 Fuel Gauge");