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GET /api/patches/2227501/?format=api
{ "id": 2227501, "url": "http://patchwork.ozlabs.org/api/patches/2227501/?format=api", "web_url": "http://patchwork.ozlabs.org/project/rtc-linux/patch/20260424-s2mu005-pmic-v5-11-fcbc9da5a004@disroot.org/", "project": { "id": 9, "url": "http://patchwork.ozlabs.org/api/projects/9/?format=api", "name": "Linux RTC development", "link_name": "rtc-linux", "list_id": "linux-rtc.vger.kernel.org", "list_email": "linux-rtc@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260424-s2mu005-pmic-v5-11-fcbc9da5a004@disroot.org>", "list_archive_url": null, "date": "2026-04-23T19:39:10", "name": "[v5,11/11] power: supply: add support for Samsung S2M series PMIC charger device", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c7996cf2041b7ad6d5ba06606132279f6a7984f7", "submitter": { "id": 88698, "url": "http://patchwork.ozlabs.org/api/people/88698/?format=api", "name": "Kaustabh Chakraborty", "email": "kauschluss@disroot.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/rtc-linux/patch/20260424-s2mu005-pmic-v5-11-fcbc9da5a004@disroot.org/mbox/", "series": [ { "id": 501238, "url": "http://patchwork.ozlabs.org/api/series/501238/?format=api", "web_url": "http://patchwork.ozlabs.org/project/rtc-linux/list/?series=501238", "date": "2026-04-23T19:39:00", "name": "Support for Samsung S2MU005 PMIC and its sub-devices", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/501238/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2227501/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2227501/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-rtc+bounces-6407-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-rtc@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=disroot.org header.i=@disroot.org header.a=rsa-sha256\n header.s=mail header.b=jCTa0qGO;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c15:e001:75::12fc:5321; helo=sin.lore.kernel.org;\n envelope-from=linux-rtc+bounces-6407-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org\n header.b=\"jCTa0qGO\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=178.21.23.139", "smtp.subspace.kernel.org;\n dmarc=pass (p=reject dis=none) header.from=disroot.org", "smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=disroot.org" ], "Received": [ "from sin.lore.kernel.org (sin.lore.kernel.org\n [IPv6:2600:3c15:e001:75::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g1my05v4Fz1y2d\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 24 Apr 2026 05:54:16 +1000 (AEST)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sin.lore.kernel.org (Postfix) with ESMTP id 7E3A3300E693\n\tfor <incoming@patchwork.ozlabs.org>; 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a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1776973870; c=relaxed/simple;\n\tbh=5N/CTSyzp4i9loObyhppJLQYxvuPtFpz0fmq5A2XMkA=;\n\th=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References:\n\t In-Reply-To:To:Cc;\n b=dIUm1eLDuOLDGJ28ox5ZyDRxmpM48onsq8uTw8xH57+4I1TQe57EJglLoBarjgxEC2/AWQ1Kod6iuCDd5oeC2UwL1Q9ZOtcQ3+IlvjBYcSLgrgMfDSuztzc1L9AKVtaaASYlOhKMZSoVNcxZ2Nm4aEpCCHhXdt1A5ScD94+He+M=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dmarc=pass (p=reject dis=none) header.from=disroot.org;\n spf=pass smtp.mailfrom=disroot.org;\n dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org\n header.b=jCTa0qGO; arc=none smtp.client-ip=178.21.23.139", "X-Virus-Scanned": "SPAM Filter at disroot.org", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail;\n\tt=1776973864; bh=5N/CTSyzp4i9loObyhppJLQYxvuPtFpz0fmq5A2XMkA=;\n\th=From:Date:Subject:References:In-Reply-To:To:Cc;\n\tb=jCTa0qGO1pAXjCXK6fMlYOsUeP6ciUjVjnP47LPt4reERkGmu6oBU3cSf39WQe/ie\n\t gy0z9DU+DsWysuRL/6sBVVI86QfvpWFda/qUltqbLN+OUvQ61EM4tZrknZDLHwWLpk\n\t uPUpddekO+oLHLByZmc58s8oAX/V1Eh/OcnG4TEZsrynAg10j/rjAxiAyfVMu+4AMY\n\t m/FCYqWfWVJ20Trz5xe2VlxdWPO2phhjxSaLF1F2svIakYrMT0tNV60NRg3mo8EweY\n\t O7DC+gsTy3/ox6yePUwUS7t1FWaAoC017uClSRqEu9bu2CWXzqK/ElLfM8MHNoUzes\n\t vEZFFZ2GO3uWw==", "From": "Kaustabh Chakraborty <kauschluss@disroot.org>", "Date": "Fri, 24 Apr 2026 01:09:10 +0530", "Subject": "[PATCH v5 11/11] power: supply: add support for Samsung S2M series\n PMIC charger device", "Precedence": "bulk", "X-Mailing-List": "linux-rtc@vger.kernel.org", "List-Id": "<linux-rtc.vger.kernel.org>", "List-Subscribe": "<mailto:linux-rtc+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-rtc+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "8bit", "Message-Id": "<20260424-s2mu005-pmic-v5-11-fcbc9da5a004@disroot.org>", "References": "<20260424-s2mu005-pmic-v5-0-fcbc9da5a004@disroot.org>", "In-Reply-To": "<20260424-s2mu005-pmic-v5-0-fcbc9da5a004@disroot.org>", "To": "Lee Jones <lee@kernel.org>, Pavel Machek <pavel@kernel.org>,\n Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>,\n Conor Dooley <conor+dt@kernel.org>, MyungJoo Ham <myungjoo.ham@samsung.com>,\n Chanwoo Choi <cw00.choi@samsung.com>, Sebastian Reichel <sre@kernel.org>,\n Krzysztof Kozlowski <krzk@kernel.org>,\n =?utf-8?q?Andr=C3=A9_Draszik?= <andre.draszik@linaro.org>,\n Alexandre Belloni <alexandre.belloni@bootlin.com>,\n Jonathan Corbet <corbet@lwn.net>, Shuah Khan <skhan@linuxfoundation.org>,\n Nam Tran <trannamatk@gmail.com>,\n =?utf-8?b?xYF1a2FzeiBMZWJpZWR6acWEc2tp?= <kernel@lvkasz.us>", "Cc": "linux-leds@vger.kernel.org, devicetree@vger.kernel.org,\n linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,\n linux-samsung-soc@vger.kernel.org, linux-rtc@vger.kernel.org,\n linux-doc@vger.kernel.org, Kaustabh Chakraborty <kauschluss@disroot.org>" }, "content": "Add a driver for charger controllers found in certain Samsung S2M series\nPMICs. The driver has very basic support for the device, with only\ncharger online reporting working, and USB 2.0 device negotiations\nworking.\n\nThe driver includes initial support for the S2MU005 PMIC charger.\n\nCo-developed-by: Łukasz Lebiedziński <kernel@lvkasz.us>\nSigned-off-by: Łukasz Lebiedziński <kernel@lvkasz.us>\nSigned-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>\n---\n drivers/power/supply/Kconfig | 11 ++\n drivers/power/supply/Makefile | 1 +\n drivers/power/supply/s2m-charger.c | 299 +++++++++++++++++++++++++++++++++++++\n 3 files changed, 311 insertions(+)", "diff": "diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig\nindex 83392ed6a8da9..6270e6d16fbbb 100644\n--- a/drivers/power/supply/Kconfig\n+++ b/drivers/power/supply/Kconfig\n@@ -856,6 +856,17 @@ config CHARGER_RK817\n \thelp\n \t Say Y to include support for Rockchip RK817 Battery Charger.\n \n+config CHARGER_S2M\n+\ttristate \"Samsung S2M series PMIC battery charger support\"\n+\tdepends on EXTCON_S2M\n+\tdepends on MFD_SEC_CORE\n+\tselect REGMAP_IRQ\n+\thelp\n+\t This option enables support for charger devices found in\n+\t certain Samsung S2M series PMICs, such as the S2MU005. These\n+\t devices provide USB power supply information and also required\n+\t for USB OTG role switching.\n+\n config CHARGER_SMB347\n \ttristate \"Summit Microelectronics SMB3XX Battery Charger\"\n \tdepends on I2C\ndiff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile\nindex 7ee839dca7f33..738814650ea0f 100644\n--- a/drivers/power/supply/Makefile\n+++ b/drivers/power/supply/Makefile\n@@ -107,6 +107,7 @@ obj-$(CONFIG_CHARGER_BQ25890)\t+= bq25890_charger.o\n obj-$(CONFIG_CHARGER_BQ25980)\t+= bq25980_charger.o\n obj-$(CONFIG_CHARGER_BQ256XX)\t+= bq256xx_charger.o\n obj-$(CONFIG_CHARGER_RK817)\t+= rk817_charger.o\n+obj-$(CONFIG_CHARGER_S2M)\t+= s2m-charger.o\n obj-$(CONFIG_CHARGER_SMB347)\t+= smb347-charger.o\n obj-$(CONFIG_CHARGER_TPS65090)\t+= tps65090-charger.o\n obj-$(CONFIG_CHARGER_TPS65217)\t+= tps65217_charger.o\ndiff --git a/drivers/power/supply/s2m-charger.c b/drivers/power/supply/s2m-charger.c\nnew file mode 100644\nindex 0000000000000..b32cea55b8b04\n--- /dev/null\n+++ b/drivers/power/supply/s2m-charger.c\n@@ -0,0 +1,299 @@\n+// SPDX-License-Identifier: GPL-2.0\n+/*\n+ * Battery Charger Driver for Samsung S2M series PMICs.\n+ *\n+ * Copyright (c) 2015 Samsung Electronics Co., Ltd\n+ * Copyright (c) 2026 Kaustabh Chakraborty <kauschluss@disroot.org>\n+ * Copyright (c) 2026 Łukasz Lebiedziński <kernel@lvkasz.us>\n+ */\n+\n+#include <linux/devm-helpers.h>\n+#include <linux/extcon.h>\n+#include <linux/mfd/samsung/core.h>\n+#include <linux/mfd/samsung/s2mu005.h>\n+#include <linux/module.h>\n+#include <linux/of.h>\n+#include <linux/of_graph.h>\n+#include <linux/platform_device.h>\n+#include <linux/power_supply.h>\n+#include <linux/regmap.h>\n+\n+struct s2m_chgr {\n+\tstruct device *dev;\n+\tstruct regmap *regmap;\n+\tstruct power_supply *psy;\n+\tstruct extcon_dev *extcon;\n+\tstruct work_struct extcon_work;\n+\tstruct notifier_block extcon_nb;\n+};\n+\n+static int s2mu005_chgr_get_online(struct s2m_chgr *priv, int *value)\n+{\n+\tu32 val;\n+\tint ret = 0;\n+\n+\tret = regmap_read(priv->regmap, S2MU005_REG_CHGR_STATUS0, &val);\n+\tif (ret < 0) {\n+\t\tdev_err(priv->dev, \"failed to read register (%d)\\n\", ret);\n+\t\treturn ret;\n+\t}\n+\n+\t*value = !!(val & S2MU005_CHGR_CHG);\n+\n+\treturn ret;\n+}\n+\n+static void s2mu005_chgr_get_usb_type(struct s2m_chgr *priv, int *value)\n+{\n+\tif (extcon_get_state(priv->extcon, EXTCON_CHG_USB_CDP))\n+\t\t*value = POWER_SUPPLY_USB_TYPE_CDP;\n+\tif (extcon_get_state(priv->extcon, EXTCON_CHG_USB_SDP))\n+\t\t*value = POWER_SUPPLY_USB_TYPE_SDP;\n+\tif (extcon_get_state(priv->extcon, EXTCON_CHG_USB_DCP))\n+\t\t*value = POWER_SUPPLY_USB_TYPE_DCP;\n+\telse\n+\t\t*value = POWER_SUPPLY_USB_TYPE_UNKNOWN;\n+}\n+\n+static int s2mu005_chgr_get_property(struct power_supply *psy,\n+\t\t\t\t enum power_supply_property psp,\n+\t\t\t\t union power_supply_propval *val)\n+{\n+\tstruct s2m_chgr *priv = power_supply_get_drvdata(psy);\n+\tint ret = 0;\n+\n+\tswitch (psp) {\n+\tcase POWER_SUPPLY_PROP_ONLINE:\n+\t\tret = s2mu005_chgr_get_online(priv, &val->intval);\n+\t\tbreak;\n+\tcase POWER_SUPPLY_PROP_USB_TYPE:\n+\t\ts2mu005_chgr_get_usb_type(priv, &val->intval);\n+\t\tbreak;\n+\tdefault:\n+\t\treturn -EINVAL;\n+\t}\n+\n+\treturn ret;\n+}\n+\n+static int s2mu005_chgr_mode_set_host(struct s2m_chgr *priv)\n+{\n+\tint ret;\n+\n+\t/* set mode to OTG */\n+\tret = regmap_update_bits(priv->regmap, S2MU005_REG_CHGR_CTRL0,\n+\t\t\t\t S2MU005_CHGR_OP_MODE,\n+\t\t\t\t FIELD_PREP(S2MU005_CHGR_OP_MODE,\n+\t\t\t\t\t S2MU005_CHGR_OP_MODE_OTG));\n+\tif (ret < 0) {\n+\t\tdev_err(priv->dev, \"failed to set OTG mode (%d)\\n\", ret);\n+\t\treturn ret;\n+\t}\n+\n+\t/* set boost frequency to 2MHz */\n+\tret = regmap_update_bits(priv->regmap, S2MU005_REG_CHGR_CTRL11,\n+\t\t\t\t S2MU005_CHGR_OSC_BOOST,\n+\t\t\t\t FIELD_PREP(S2MU005_CHGR_OSC_BOOST,\n+\t\t\t\t\t S2MU005_CHGR_OSC_BOOST_2MHZ));\n+\tif (ret < 0) {\n+\t\tdev_err(priv->dev, \"failed to set boost frequency (%d)\\n\", ret);\n+\t\treturn ret;\n+\t}\n+\n+\t/* set OTG current limit to 1.5 A */\n+\tret = regmap_update_bits(priv->regmap, S2MU005_REG_CHGR_CTRL4,\n+\t\t\t\t S2MU005_CHGR_OTG_OCP,\n+\t\t\t\t FIELD_PREP(S2MU005_CHGR_OTG_OCP,\n+\t\t\t\t\t S2MU005_CHGR_OTG_OCP_1P5A));\n+\tif (ret < 0) {\n+\t\tdev_err(priv->dev, \"failed to set OTG current limit (%d)\\n\", ret);\n+\t\treturn ret;\n+\t}\n+\n+\t/* VBUS switches are OFF when OTG over-current happens */\n+\tret = regmap_set_bits(priv->regmap, S2MU005_REG_CHGR_CTRL4,\n+\t\t\t S2MU005_CHGR_OTG_OCP_OFF);\n+\tif (ret < 0) {\n+\t\tdev_err(priv->dev, \"failed to set OTG OCP switch (%d)\\n\", ret);\n+\t\treturn ret;\n+\t}\n+\n+\t/* set OTG voltage to 5.1 V */\n+\tret = regmap_update_bits(priv->regmap, S2MU005_REG_CHGR_CTRL5,\n+\t\t\t\t S2MU005_CHGR_VMID_BOOST,\n+\t\t\t\t FIELD_PREP(S2MU005_CHGR_VMID_BOOST,\n+\t\t\t\t\t S2MU005_CHGR_VMID_BOOST_5P1V));\n+\tif (ret < 0) {\n+\t\tdev_err(priv->dev, \"failed to set OTG voltage (%d)\\n\", ret);\n+\t\treturn ret;\n+\t}\n+\n+\t/* turn on OTG */\n+\tret = regmap_update_bits(priv->regmap, S2MU005_REG_CHGR_CTRL15,\n+\t\t\t\t S2MU005_CHGR_OTG_EN,\n+\t\t\t\t FIELD_PREP(S2MU005_CHGR_OTG_EN,\n+\t\t\t\t\t S2MU005_CHGR_OTG_EN_ON));\n+\tif (ret < 0)\n+\t\tdev_err(priv->dev, \"failed to turn on OTG (%d)\\n\", ret);\n+\treturn ret;\n+}\n+\n+static int s2mu005_chgr_mode_set_charger(struct s2m_chgr *priv)\n+{\n+\tint ret;\n+\n+\t/* first reset to mode 0 */\n+\tret = regmap_clear_bits(priv->regmap, S2MU005_REG_CHGR_CTRL0,\n+\t\t\t\tS2MU005_CHGR_OP_MODE);\n+\tif (ret < 0) {\n+\t\tdev_err(priv->dev, \"failed to reset opmode (%d)\\n\", ret);\n+\t\treturn ret;\n+\t}\n+\n+\t/* wait for the charger to settle before switching to charging mode */\n+\tmsleep(50);\n+\t/* then set to charging mode */\n+\tret = regmap_update_bits(priv->regmap, S2MU005_REG_CHGR_CTRL0,\n+\t\t\t\t S2MU005_CHGR_OP_MODE,\n+\t\t\t\t FIELD_PREP(S2MU005_CHGR_OP_MODE,\n+\t\t\t\t\t S2MU005_CHGR_OP_MODE_CHG));\n+\tif (ret < 0)\n+\t\tdev_err(priv->dev, \"failed to set opmode to charging (%d)\\n\", ret);\n+\t\treturn ret;\n+}\n+\n+static int s2mu005_chgr_mode_unset(struct s2m_chgr *priv)\n+{\n+\tint ret;\n+\n+\t/* turn off OTG */\n+\tret = regmap_clear_bits(priv->regmap, S2MU005_REG_CHGR_CTRL15,\n+\t\t\t\tS2MU005_CHGR_OTG_EN);\n+\tif (ret < 0) {\n+\t\tdev_err(priv->dev, \"failed to turn off OTG (%d)\\n\", ret);\n+\t\treturn ret;\n+\t}\n+\n+\t/* reset operation mode */\n+\tret = regmap_clear_bits(priv->regmap, S2MU005_REG_CHGR_CTRL0,\n+\t\t\t\tS2MU005_CHGR_OP_MODE);\n+\tif (ret < 0)\n+\t\tdev_err(priv->dev, \"failed to reset opmode (%d)\\n\", ret);\n+\treturn ret;\n+}\n+\n+static void s2mu005_chgr_extcon_work(struct work_struct *work)\n+{\n+\tstruct s2m_chgr *priv = container_of(work, struct s2m_chgr, extcon_work);\n+\n+\tif (extcon_get_state(priv->extcon, EXTCON_USB_HOST))\n+\t\ts2mu005_chgr_mode_set_host(priv);\n+\telse if (extcon_get_state(priv->extcon, EXTCON_USB))\n+\t\ts2mu005_chgr_mode_set_charger(priv);\n+\telse\n+\t\ts2mu005_chgr_mode_unset(priv);\n+\n+\tpower_supply_changed(priv->psy);\n+}\n+\n+static const enum power_supply_property s2mu005_chgr_properties[] = {\n+\tPOWER_SUPPLY_PROP_ONLINE,\n+\tPOWER_SUPPLY_PROP_USB_TYPE,\n+};\n+\n+static const struct power_supply_desc s2mu005_chgr_psy_desc = {\n+\t.name = \"s2mu005-charger\",\n+\t.type = POWER_SUPPLY_TYPE_USB,\n+\t.properties = s2mu005_chgr_properties,\n+\t.num_properties = ARRAY_SIZE(s2mu005_chgr_properties),\n+\t.get_property = s2mu005_chgr_get_property,\n+\t.usb_types = BIT(POWER_SUPPLY_USB_TYPE_CDP) |\n+\t\t BIT(POWER_SUPPLY_USB_TYPE_SDP) |\n+\t\t BIT(POWER_SUPPLY_USB_TYPE_DCP) |\n+\t\t BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN),\n+};\n+\n+static int s2m_chgr_extcon_notifier(struct notifier_block *nb,\n+\t\t\t\t\tunsigned long event, void *param)\n+{\n+\tstruct s2m_chgr *priv = container_of(nb, struct s2m_chgr, extcon_nb);\n+\n+\tschedule_work(&priv->extcon_work);\n+\n+\treturn NOTIFY_OK;\n+}\n+\n+static int s2m_chgr_probe(struct platform_device *pdev)\n+{\n+\tstruct device *dev = &pdev->dev;\n+\tstruct sec_pmic_dev *pmic_drvdata = dev_get_drvdata(dev->parent);\n+\tstruct s2m_chgr *priv;\n+\tstruct device_node *extcon_node __free(device_node) = NULL;\n+\tstruct power_supply_config psy_cfg = {};\n+\tconst struct power_supply_desc *psy_desc;\n+\twork_func_t extcon_work_func;\n+\tint ret;\n+\n+\tpriv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);\n+\tif (!priv)\n+\t\treturn -ENOMEM;\n+\n+\tplatform_set_drvdata(pdev, priv);\n+\tpriv->dev = dev;\n+\tpriv->regmap = pmic_drvdata->regmap_pmic;\n+\n+\tswitch (platform_get_device_id(pdev)->driver_data) {\n+\tcase S2MU005:\n+\t\tpsy_desc = &s2mu005_chgr_psy_desc;\n+\t\textcon_work_func = s2mu005_chgr_extcon_work;\n+\t\tbreak;\n+\tdefault:\n+\t\treturn dev_err_probe(dev, -ENODEV,\n+\t\t\t\t \"device type %d is not supported by driver\\n\",\n+\t\t\t\t pmic_drvdata->device_type);\n+\t}\n+\n+\tpsy_cfg.drv_data = priv;\n+\tpsy_cfg.fwnode = dev_fwnode(dev->parent);\n+\tpriv->psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);\n+\tif (IS_ERR(priv->psy))\n+\t\treturn dev_err_probe(dev, PTR_ERR(priv->psy),\n+\t\t\t\t \"failed to register power supply subsystem\\n\");\n+\n+\t/* MUIC is mandatory. If unavailable, request probe deferral */\n+\textcon_node = of_get_child_by_name(dev->parent->of_node, \"muic\");\n+\tpriv->extcon = extcon_find_edev_by_node(extcon_node);\n+\tif (IS_ERR(priv->extcon))\n+\t\treturn -EPROBE_DEFER;\n+\n+\tret = devm_work_autocancel(dev, &priv->extcon_work, extcon_work_func);\n+\tif (ret)\n+\t\treturn dev_err_probe(dev, ret, \"failed to initialize extcon work\\n\");\n+\n+\tpriv->extcon_nb.notifier_call = s2m_chgr_extcon_notifier;\n+\tret = devm_extcon_register_notifier_all(dev, priv->extcon, &priv->extcon_nb);\n+\tif (ret)\n+\t\tdev_err_probe(dev, ret, \"failed to register extcon notifier\\n\");\n+\n+\treturn 0;\n+}\n+\n+static const struct platform_device_id s2m_chgr_id_table[] = {\n+\t{ \"s2mu005-charger\", S2MU005 },\n+\t{ /* sentinel */ },\n+};\n+MODULE_DEVICE_TABLE(platform, s2m_chgr_id_table);\n+\n+static struct platform_driver s2m_chgr_driver = {\n+\t.driver = {\n+\t\t.name = \"s2m-charger\",\n+\t},\n+\t.probe = s2m_chgr_probe,\n+\t.id_table = s2m_chgr_id_table,\n+};\n+module_platform_driver(s2m_chgr_driver);\n+\n+MODULE_DESCRIPTION(\"Battery Charger Driver For Samsung S2M Series PMICs\");\n+MODULE_AUTHOR(\"Kaustabh Chakraborty <kauschluss@disroot.org>\");\n+MODULE_AUTHOR(\"Łukasz Lebiedziński <kernel@lvkasz.us>\");\n+MODULE_LICENSE(\"GPL\");\n", "prefixes": [ "v5", "11/11" ] }