From patchwork Mon May 8 13:10:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Arslanbenzer, Zeynep" X-Patchwork-Id: 680152 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 DB2AFC7EE22 for ; Mon, 8 May 2023 13:17:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233631AbjEHNRo (ORCPT ); Mon, 8 May 2023 09:17:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35544 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234049AbjEHNRi (ORCPT ); Mon, 8 May 2023 09:17:38 -0400 Received: from mx0a-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 004FB1248B; Mon, 8 May 2023 06:17:18 -0700 (PDT) Received: from pps.filterd (m0167088.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 348C9TC7004293; Mon, 8 May 2023 09:17:14 -0400 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 3qf0u68amm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 08 May 2023 09:17:14 -0400 Received: from ASHBMBX9.ad.analog.com (ASHBMBX9.ad.analog.com [10.64.17.10]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 348DHDh4020890 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 8 May 2023 09:17:13 -0400 Received: from ASHBMBX9.ad.analog.com (10.64.17.10) by ASHBMBX9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Mon, 8 May 2023 09:17:12 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Mon, 8 May 2023 09:17:11 -0400 Received: from IST-LT-42339.ad.analog.com ([10.158.19.231]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 348DBdTM009014; Mon, 8 May 2023 09:17:04 -0400 From: Zeynep Arslanbenzer To: , , , , , CC: , , , , Nurettin Bolucu Subject: [PATCH v3 3/7] power: supply: max77658: Add ADI MAX77654/58/59 Charger Support Date: Mon, 8 May 2023 16:10:41 +0300 Message-ID: <20230508131045.9399-4-Zeynep.Arslanbenzer@analog.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230508131045.9399-1-Zeynep.Arslanbenzer@analog.com> References: <20230508131045.9399-1-Zeynep.Arslanbenzer@analog.com> MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: KEUSx0NMSu6W5IH5oGkaVohSAu89wPJK X-Proofpoint-ORIG-GUID: KEUSx0NMSu6W5IH5oGkaVohSAu89wPJK X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-08_09,2023-05-05_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 impostorscore=0 suspectscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 priorityscore=1501 adultscore=0 bulkscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2305080089 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Charger driver for ADI MAX77654/58/59. The MAX77654/58/59 charger is Smart Power Selector Li+/Li-Poly Charger. Signed-off-by: Nurettin Bolucu Signed-off-by: Zeynep Arslanbenzer --- drivers/power/supply/Kconfig | 7 + drivers/power/supply/Makefile | 1 + drivers/power/supply/max77658-charger.c | 844 ++++++++++++++++++++++++ 3 files changed, 852 insertions(+) create mode 100644 drivers/power/supply/max77658-charger.c diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 0bbfe6a7ce4d..4b68bbb1e2a8 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -565,6 +565,13 @@ config CHARGER_MAX77650 Say Y to enable support for the battery charger control of MAX77650 PMICs. +config CHARGER_MAX77658 + tristate "Analog Devices MAX77654/58/59 battery charger driver" + depends on MFD_MAX77658 + help + Say Y to enable support for the battery charger control of + MAX77654/58/59 PMIC. + config CHARGER_MAX77693 tristate "Maxim MAX77693 battery charger driver" depends on MFD_MAX77693 diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 0ee8653e882e..af4bd6e5969f 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -76,6 +76,7 @@ obj-$(CONFIG_CHARGER_LTC4162L) += ltc4162-l-charger.o obj-$(CONFIG_CHARGER_MAX14577) += max14577_charger.o obj-$(CONFIG_CHARGER_DETECTOR_MAX14656) += max14656_charger_detector.o obj-$(CONFIG_CHARGER_MAX77650) += max77650-charger.o +obj-$(CONFIG_CHARGER_MAX77658) += max77658-charger.o obj-$(CONFIG_CHARGER_MAX77693) += max77693_charger.o obj-$(CONFIG_CHARGER_MAX77976) += max77976_charger.o obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o diff --git a/drivers/power/supply/max77658-charger.c b/drivers/power/supply/max77658-charger.c new file mode 100644 index 000000000000..de37ebd1a756 --- /dev/null +++ b/drivers/power/supply/max77658-charger.c @@ -0,0 +1,844 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2023 Analog Devices, Inc. + * ADI charger driver for the MAX77654/58/59 + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define MAX77659_CHG_IRQ_MAX 5 + +/* Default value for fast charge timer, in hours */ +#define MAX77658_FAST_CHG_TIMER_DEFAULT 5 +/* Default value for topoff timer, in minutes */ +#define MAX77658_TOPOFF_TIMER_DEFAULT 30 + +#define MAX77658_CHARGER_CURRENT_MAX 300000 +#define MAX77658_CHARGER_CURRENT_MIN 7500 +#define MAX77658_CHARGER_CURRENT_STEP 7500 +#define MAX77658_CNFG_B_ICHGIN_LIM_MAX 475000 +#define MAX77658_CNFG_B_ICHGIN_LIM_MIN 95000 +#define MAX77658_CNFG_B_ICHGIN_LIM_STEP 95000 +#define MAX77658_CNFG_B_ICHGIN_LIM_REG_MAX 4 +#define MAX77658_TOPOFF_TIMER_STEP 5 + +#define MAX77658_REG_STAT_CHG_A 0x02 +#define MAX77658_REG_STAT_CHG_B 0x03 +#define MAX77658_REG_CNFG_CHG_A 0x20 +#define MAX77658_REG_CNFG_CHG_B 0x21 +#define MAX77658_REG_CNFG_CHG_C 0x22 +#define MAX77658_REG_CNFG_CHG_D 0x23 +#define MAX77658_REG_CNFG_CHG_E 0x24 +#define MAX77658_REG_CNFG_CHG_F 0x25 +#define MAX77658_REG_CNFG_CHG_G 0x26 +#define MAX77658_REG_CNFG_CHG_H 0x27 +#define MAX77658_REG_CNFG_CHG_I 0x28 + +#define MAX77658_BIT_STAT_A_THM_DTLS GENMASK(2, 0) +#define MAX77658_BIT_STAT_A_TJ_REG_STAT BIT(3) +#define MAX77658_BIT_STAT_A_VSYSY_MIN_STAT BIT(4) +#define MAX77658_BIT_STAT_A_ICHGIN_LIM_STAT BIT(5) +#define MAX77658_BIT_STAT_A_VCHGIN_MIN_STAT BIT(6) +#define MAX77658_BIT_STAT_B_CHG BIT(1) +#define MAX77658_BIT_STAT_B_CHGIN_DTSL GENMASK(3, 2) +#define MAX77658_BIT_STAT_B_CHG_DTLS GENMASK(7, 4) +#define MAX77658_BIT_CNFG_B_CHG_EN BIT(0) +#define MAX77658_BIT_CNFG_B_ICHGIN_LIM GENMASK(4, 2) +#define MAX77658_BIT_CNFG_C_TOPOFFTIMER GENMASK(2, 0) +#define MAX77658_BIT_CNFG_E_TFASTCHG GENMASK(1, 0) +#define MAX77658_BIT_CNFG_E_CC GENMASK(7, 2) +#define MAX77658_BIT_CNFG_G_CHG_CV GENMASK(7, 2) + +enum { + MAX77658_CHG_DTLS_OFF, + MAX77658_CHG_DTLS_PREQUAL, + MAX77658_CHG_DTLS_FASTCHARGE_CC, + MAX77658_CHG_DTLS_JEITA_FASTCHARGE_CC, + MAX77658_CHG_DTLS_FASTCHARGE_CV, + MAX77658_CHG_DTLS_JEITA_FASTCHARGE_CV, + MAX77658_CHG_DTLS_TOPOFF, + MAX77658_CHG_DTLS_JEITA_TOPOFF, + MAX77658_CHG_DTLS_DONE, + MAX77658_CHG_DTLS_JEITA_DONE, + MAX77658_CHG_DTLS_OFF_TIMER_FAULT, + MAX77658_CHG_DTLS_OFF_CHARGE_TIMER_FAULT, + MAX77658_CHG_DTLS_OFF_BATTERY_TEMP_FAULT, + MAX77658_CHG_DTLS_RESERVED_13, +}; + +enum { + MAX77658_CHG_IRQ_THM_I, + MAX77658_CHG_IRQ_CHG_I, + MAX77658_CHG_IRQ_CHGIN_I, + MAX77658_CHG_IRQ_TJ_REG_I, + MAX77658_CHG_IRQ_SYS_CTRL_I, + MAX77658_CHG_IRQ_CHGIN_CTRL_I, + MAX77658_CHG_IRQ_SYS_CNFG_I, + MAX77658_CHG_IRQ_MAX, +}; + +struct max77658_charger { + struct device *dev; + struct max77658_dev *max77658; + struct regmap *regmap; + + struct power_supply *psy_chg; + struct power_supply_desc psy_chg_d; + + int irq; + int irq_arr[MAX77658_CHG_IRQ_MAX]; + int irq_mask; + + struct delayed_work irq_work; + + int present; + int health; + int status; + int charge_type; + + unsigned int fast_charge_current_ua; + unsigned int input_current_limit_ua; +}; + +static int max77658_set_input_current_limit(struct max77658_charger *charger, + int input_current) +{ + u8 reg_data = 0; + + input_current = clamp_val(input_current, MAX77658_CNFG_B_ICHGIN_LIM_MIN, + MAX77658_CNFG_B_ICHGIN_LIM_MAX); + if (charger->max77658->id == ID_MAX77658) { + reg_data = MAX77658_CNFG_B_ICHGIN_LIM_REG_MAX + 1 + - DIV_ROUND_UP(input_current, + MAX77658_CNFG_B_ICHGIN_LIM_STEP); + } else { + reg_data = DIV_ROUND_UP(input_current, + MAX77658_CNFG_B_ICHGIN_LIM_STEP) - 1; + } + + reg_data = FIELD_PREP(MAX77658_BIT_CNFG_B_ICHGIN_LIM, reg_data); + return regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_B, + MAX77658_BIT_CNFG_B_ICHGIN_LIM, reg_data); +} + +static int max77658_get_input_current_limit(struct max77658_charger *charger, + int *get_current) +{ + unsigned int reg_data = 0; + int ret; + + ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_B, ®_data); + if (ret) + return ret; + + reg_data = FIELD_GET(MAX77658_BIT_CNFG_B_ICHGIN_LIM, reg_data); + + if (charger->max77658->id == ID_MAX77658) { + *get_current = (MAX77658_CNFG_B_ICHGIN_LIM_REG_MAX + 1 + - reg_data) * MAX77658_CNFG_B_ICHGIN_LIM_STEP; + } else { + *get_current = (reg_data + 1) * MAX77658_CNFG_B_ICHGIN_LIM_STEP; + } + + return 0; +} + +static int max77658_set_charge_current(struct max77658_charger *charger, + int fast_charge_current_ua) +{ + unsigned int reg_data; + + fast_charge_current_ua = clamp_val(fast_charge_current_ua, + MAX77658_CHARGER_CURRENT_MIN, + MAX77658_CHARGER_CURRENT_MAX); + reg_data = fast_charge_current_ua / MAX77658_CHARGER_CURRENT_STEP - 1; + reg_data = FIELD_PREP(MAX77658_BIT_CNFG_E_CC, reg_data); + + return regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_E, + MAX77658_BIT_CNFG_E_CC, reg_data); +} + +static int max77658_get_charge_current(struct max77658_charger *charger, + int *get_current) +{ + unsigned int reg_data, current_val; + int ret; + + ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_E, ®_data); + if (ret) + return ret; + + reg_data = FIELD_GET(MAX77658_BIT_CNFG_E_CC, reg_data); + current_val = (reg_data + 1) * MAX77658_CHARGER_CURRENT_STEP; + + *get_current = clamp_val(current_val, MAX77658_CHARGER_CURRENT_MIN, + MAX77658_CHARGER_CURRENT_MAX); + + return 0; +} + +static ssize_t max77658_device_attr_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count, + int (*fn)(struct max77658_charger *, + unsigned long)) +{ + struct max77658_charger *charger = dev_get_drvdata(dev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + ret = fn(charger, val); + if (ret) + return ret; + + return count; +} + +static int max77658_set_topoff_timer(struct max77658_charger *charger, + unsigned long minutes) +{ + unsigned int reg_data; + + minutes = clamp_val(minutes, 0, MAX77658_BIT_CNFG_C_TOPOFFTIMER + * MAX77658_TOPOFF_TIMER_STEP); + reg_data = FIELD_PREP(MAX77658_BIT_CNFG_C_TOPOFFTIMER, + minutes / MAX77658_TOPOFF_TIMER_STEP); + + return regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_C, + MAX77658_BIT_CNFG_C_TOPOFFTIMER, reg_data); +} + +static ssize_t topoff_timer_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + return max77658_device_attr_store(dev, attr, buf, count, + max77658_set_topoff_timer); +} + +static ssize_t topoff_timer_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct max77658_charger *charger = dev_get_drvdata(dev); + unsigned int reg_data, minutes; + int ret; + + ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_C, + ®_data); + if (ret) + return ret; + + minutes = FIELD_GET(MAX77658_BIT_STAT_A_THM_DTLS, reg_data) + * MAX77658_TOPOFF_TIMER_STEP; + + return scnprintf(buf, PAGE_SIZE, "%u\n", minutes); +} + +static int max77658_set_fast_charge_timer(struct max77658_charger *charger, + unsigned long hours) +{ + unsigned int val; + + if (hours == 0 || hours > 7) + val = 0x00; + else if (hours < 3) + val = 0x01; + else + val = DIV_ROUND_UP(hours - 1, 2); + + return regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_E, + MAX77658_BIT_CNFG_E_TFASTCHG, val); +} + +static ssize_t fast_charge_timer_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + return max77658_device_attr_store(dev, attr, buf, count, + max77658_set_fast_charge_timer); +} + +static ssize_t fast_charge_timer_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct max77658_charger *charger = dev_get_drvdata(dev); + unsigned int reg_data, hours; + int ret; + + ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_E, + ®_data); + if (ret) + return ret; + + reg_data = FIELD_GET(MAX77658_BIT_CNFG_E_TFASTCHG, reg_data); + + if (reg_data == 0) + hours = 0; + else + hours = reg_data * 2 + 1; + + return scnprintf(buf, PAGE_SIZE, "%u\n", hours); +} + +static DEVICE_ATTR_RW(fast_charge_timer); +static DEVICE_ATTR_RW(topoff_timer); + +static int max77658_charger_initialize(struct max77658_charger *charger) +{ + int ret; + + ret = max77658_set_charge_current(charger, + charger->fast_charge_current_ua); + if (ret) + return dev_err_probe(charger->dev, ret, + "Error in writing register CNFG_CHG_C\n"); + + ret = max77658_set_fast_charge_timer(charger, + MAX77658_FAST_CHG_TIMER_DEFAULT); + if (ret) + return dev_err_probe(charger->dev, ret, + "Error in writing register CNFG_CHG_E\n"); + + ret = max77658_set_topoff_timer(charger, MAX77658_TOPOFF_TIMER_DEFAULT); + if (ret) + return dev_err_probe(charger->dev, ret, + "Error in writing register CNFG_CHG_C\n"); + + if (charger->max77658->id == ID_MAX77659) + return 0; + + return max77658_set_input_current_limit(charger, + charger->input_current_limit_ua); +} + +static void max77658_charger_parse_dt(struct max77658_charger *charger) +{ + int ret; + + ret = device_property_read_u32(charger->dev, + "adi,input-current-limit-microamp", + &charger->input_current_limit_ua); + if (ret) { + dev_dbg(charger->dev, + "Could not read input-current-limit DT property\n"); + charger->input_current_limit_ua = 475000; + } +} + +struct max77658_charger_status_map { + int health; + int status; + int charge_type; +}; + +#define STATUS_MAP(_MAX77658_CHG_DTLS, _health, _status, _charge_type) \ + [MAX77658_CHG_DTLS_##_MAX77658_CHG_DTLS] = {\ + .health = POWER_SUPPLY_HEALTH_##_health,\ + .status = POWER_SUPPLY_STATUS_##_status,\ + .charge_type = POWER_SUPPLY_CHARGE_TYPE_##_charge_type,\ + } + +static struct max77658_charger_status_map max77658_charger_status_map[] = { + /* chg_details_xx, health, status, charge_type */ + STATUS_MAP(OFF, UNKNOWN, NOT_CHARGING, NONE), + STATUS_MAP(PREQUAL, GOOD, CHARGING, TRICKLE), + STATUS_MAP(FASTCHARGE_CC, GOOD, CHARGING, FAST), + STATUS_MAP(JEITA_FASTCHARGE_CC, GOOD, CHARGING, FAST), + STATUS_MAP(FASTCHARGE_CV, GOOD, CHARGING, FAST), + STATUS_MAP(JEITA_FASTCHARGE_CV, GOOD, CHARGING, FAST), + STATUS_MAP(TOPOFF, GOOD, CHARGING, FAST), + STATUS_MAP(JEITA_TOPOFF, GOOD, CHARGING, FAST), + STATUS_MAP(DONE, GOOD, FULL, NONE), + STATUS_MAP(JEITA_DONE, GOOD, FULL, NONE), + STATUS_MAP(OFF_TIMER_FAULT, SAFETY_TIMER_EXPIRE, NOT_CHARGING, NONE), + STATUS_MAP(OFF_CHARGE_TIMER_FAULT, UNKNOWN, NOT_CHARGING, NONE), + STATUS_MAP(OFF_BATTERY_TEMP_FAULT, HOT, NOT_CHARGING, NONE), +}; + +static int max77658_charger_update(struct max77658_charger *charger) +{ + unsigned int stat_chg_b, chg_dtls; + int ret; + + ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_B, + &stat_chg_b); + if (ret) { + charger->health = POWER_SUPPLY_HEALTH_UNKNOWN; + charger->status = POWER_SUPPLY_STATUS_UNKNOWN; + charger->charge_type = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN; + return ret; + } + + charger->present = stat_chg_b & MAX77658_BIT_STAT_B_CHG; + if (!charger->present) { + charger->health = POWER_SUPPLY_HEALTH_UNKNOWN; + charger->status = POWER_SUPPLY_STATUS_DISCHARGING; + charger->charge_type = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN; + return 0; + } + + chg_dtls = FIELD_GET(MAX77658_BIT_STAT_B_CHG_DTLS, stat_chg_b); + + charger->health = max77658_charger_status_map[chg_dtls].health; + charger->status = max77658_charger_status_map[chg_dtls].status; + charger->charge_type = + max77658_charger_status_map[chg_dtls].charge_type; + + return 0; +} + +static enum power_supply_property max77658_charger_props[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CURRENT_MAX +}; + +static enum power_supply_property max77659_charger_props[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_CURRENT_NOW +}; + +static int max77658_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + case POWER_SUPPLY_PROP_CURRENT_NOW: + case POWER_SUPPLY_PROP_CURRENT_MAX: + return 1; + default: + return 0; + } +} + +static int max77659_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + case POWER_SUPPLY_PROP_CURRENT_NOW: + return 1; + default: + return 0; + } +} + +static int max77658_charger_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct max77658_charger *charger = power_supply_get_drvdata(psy); + int ret; + + ret = max77658_charger_update(charger); + if (ret) + return ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval = charger->present; + break; + case POWER_SUPPLY_PROP_HEALTH: + val->intval = charger->health; + break; + case POWER_SUPPLY_PROP_STATUS: + val->intval = charger->status; + break; + case POWER_SUPPLY_PROP_CHARGE_TYPE: + val->intval = charger->charge_type; + break; + case POWER_SUPPLY_PROP_CURRENT_NOW: + ret = max77658_get_charge_current(charger, &val->intval); + break; + case POWER_SUPPLY_PROP_CURRENT_MAX: + if (charger->max77658->id != ID_MAX77659) { + ret = max77658_get_input_current_limit(charger, + &val->intval); + } else { + ret = -EINVAL; + } + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int max77658_charger_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct max77658_charger *charger = power_supply_get_drvdata(psy); + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + ret = regmap_update_bits(charger->regmap, + MAX77658_REG_CNFG_CHG_B, + MAX77658_BIT_CNFG_B_CHG_EN, + !!val->intval); + if (ret) + return ret; + + ret = + max77658_set_charge_current(charger, + charger->fast_charge_current_ua); + break; + case POWER_SUPPLY_PROP_CURRENT_NOW: + /* val->intval - uA */ + ret = max77658_set_charge_current(charger, val->intval); + if (ret) + return ret; + + charger->fast_charge_current_ua = val->intval; + break; + case POWER_SUPPLY_PROP_CURRENT_MAX: + if (charger->max77658->id == ID_MAX77659) { + ret = -EINVAL; + break; + } + ret = max77658_set_input_current_limit(charger, val->intval); + if (ret) + return ret; + + charger->input_current_limit_ua = val->intval; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static void max77658_charger_irq_handler(struct max77658_charger *charger, + int irq) +{ + int chg_present, vchgin, ichgin; + unsigned int val, stat_chg_b; + int ret; + + switch (irq) { + case MAX77658_CHG_IRQ_THM_I: + ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_A, + &val); + if (ret) { + dev_err(charger->dev, "Failed to read STAT_CHG_A\n"); + return; + } + + val = FIELD_GET(MAX77658_BIT_STAT_A_THM_DTLS, val); + dev_dbg(charger->dev, "CHG_INT_THM: thm_dtls = %02Xh\n", val); + break; + + case MAX77658_CHG_IRQ_CHG_I: + ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_B, + &val); + if (ret) { + dev_err(charger->dev, "Failed to read STAT_CHG_B\n"); + return; + } + + val = FIELD_GET(MAX77658_BIT_STAT_B_CHG_DTLS, val); + dev_dbg(charger->dev, + "CHG_INT_CHG: MAX77658_CHG_DTLS = %02Xh\n", val); + break; + + case MAX77658_CHG_IRQ_CHGIN_I: + ret = regmap_read(charger->regmap, + MAX77658_REG_STAT_CHG_B, &val); + if (ret) { + dev_err(charger->dev, "Failed to read STAT_CHG_B\n"); + return; + } + + val = FIELD_GET(MAX77658_BIT_STAT_B_CHG_DTLS, val); + dev_dbg(charger->dev, + "CHG_INT_CHG: MAX77658_CHG_DTLS = %02Xh\n", val); + + ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_B, + &stat_chg_b); + if (ret) { + dev_err(charger->dev, "Failed to read STAT_CHG_B\n"); + return; + } + + chg_present = stat_chg_b & MAX77658_BIT_STAT_B_CHG; + + regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_B, + MAX77658_BIT_CNFG_B_CHG_EN, !!chg_present); + if (chg_present) + break; + + max77658_set_charge_current(charger, + charger->fast_charge_current_ua); + break; + + case MAX77658_CHG_IRQ_TJ_REG_I: + ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_A, + &val); + if (ret) { + dev_err(charger->dev, "Failed to read STAT_CHG_A\n"); + return; + } + + val = FIELD_GET(MAX77658_BIT_STAT_A_TJ_REG_STAT, val); + dev_dbg(charger->dev, + "CHG_INT_TJ_REG: tj_reg_stat = %02Xh\n", val); + dev_dbg(charger->dev, + "CHG_INT_TJ_REG: Die temperature %s Tj-reg\n", + val ? "has exceeded" : "has not exceeded"); + break; + + case MAX77658_CHG_IRQ_SYS_CTRL_I: + ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_A, + &val); + if (ret) { + dev_err(charger->dev, "Failed to read STAT_CHG_A\n"); + return; + } + + val = FIELD_GET(MAX77658_BIT_STAT_A_VSYSY_MIN_STAT, val); + dev_dbg(charger->dev, + "CHG_INT_SYS_CTRL: The minimum system voltage regulation loop %s\n", + val ? "has engaged" : "has not engaged"); + break; + + case MAX77658_CHG_IRQ_CHGIN_CTRL_I: + ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_A, + &val); + if (ret) { + dev_dbg(charger->dev, "Failed to read STAT_CHG_A\n"); + return; + } + + vchgin = FIELD_GET(MAX77658_BIT_STAT_A_VCHGIN_MIN_STAT, val); + dev_dbg(charger->dev, "CHG_INT_CHGIN: VCHGIN_MIN_STAT %s\n", + vchgin ? "has changed" : "has not changed"); + + ichgin = FIELD_GET(MAX77658_BIT_STAT_A_ICHGIN_LIM_STAT, val); + dev_dbg(charger->dev, "CHG_INT_CHGIN: ICHGIN_LIM_STAT %s\n", + ichgin ? "has changed" : "has not changed"); + break; + + case MAX77658_CHG_IRQ_SYS_CNFG_I: + ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_G, + &val); + if (ret) { + dev_dbg(charger->dev, "Failed to read CNFG_CHG_G\n"); + return; + } + + val = FIELD_GET(MAX77658_BIT_CNFG_G_CHG_CV, val); + dev_dbg(charger->dev, "CHG_INT_SYS_CNFG: CHG_VC = %02Xh\n", + val); + break; + + default: + break; + } + + power_supply_changed(charger->psy_chg); +} + +static irqreturn_t max77658_charger_isr(int irq, void *data) +{ + struct max77658_charger *charger = data; + + charger->irq = irq; + max77658_charger_update(charger); + max77658_charger_irq_handler(charger, + charger->irq - charger->irq_arr[0]); + + return IRQ_HANDLED; +} + +static const char * const max77658_irq_descs[] = { + "charger-thm", + "charger-chg", + "charger-chgin", + "charger-tj-reg", + "charger-sys-ctrl", + "charger-chgin-ctrl", + "charger-sys-cnfg", +}; + +static int max77658_charger_probe(struct platform_device *pdev) +{ + struct max77658_dev *max77658 = dev_get_drvdata(pdev->dev.parent); + struct power_supply_config charger_cfg = {}; + struct power_supply_battery_info *info; + struct max77658_charger *charger; + struct device *dev = &pdev->dev; + int i, n_irq, ret; + + charger = devm_kzalloc(dev, sizeof(*charger), GFP_KERNEL); + if (!charger) + return -ENOMEM; + + platform_set_drvdata(pdev, charger); + + charger->dev = dev; + charger->max77658 = max77658; + charger->regmap = dev_get_regmap(charger->dev->parent, NULL); + + charger->psy_chg_d.get_property = max77658_charger_get_property; + charger->psy_chg_d.set_property = max77658_charger_set_property; + charger->psy_chg_d.type = POWER_SUPPLY_TYPE_USB; + charger_cfg.of_node = dev->of_node; + charger_cfg.drv_data = charger; + + switch (max77658->id) { + case ID_MAX77654: + charger->psy_chg_d.properties = max77658_charger_props; + charger->psy_chg_d.num_properties = + ARRAY_SIZE(max77658_charger_props); + charger->psy_chg_d.name = "max77654-charger"; + charger->psy_chg_d.property_is_writeable = + max77658_property_is_writeable; + n_irq = MAX77658_CHG_IRQ_MAX; + break; + case ID_MAX77658: + charger->psy_chg_d.properties = max77658_charger_props; + charger->psy_chg_d.num_properties = + ARRAY_SIZE(max77658_charger_props); + charger->psy_chg_d.name = "max77658-charger"; + charger->psy_chg_d.property_is_writeable = + max77658_property_is_writeable; + n_irq = MAX77658_CHG_IRQ_MAX; + break; + case ID_MAX77659: + charger->psy_chg_d.properties = max77659_charger_props; + charger->psy_chg_d.num_properties = + ARRAY_SIZE(max77659_charger_props); + charger->psy_chg_d.name = "max77659-charger"; + charger->psy_chg_d.property_is_writeable = + max77659_property_is_writeable; + n_irq = MAX77659_CHG_IRQ_MAX; + break; + default: + return -EINVAL; + } + + charger->psy_chg = devm_power_supply_register(dev, &charger->psy_chg_d, + &charger_cfg); + if (IS_ERR(charger->psy_chg)) + return dev_err_probe(dev, PTR_ERR(charger->psy_chg), + "Failed to register power supply\n"); + + charger->psy_chg->of_node = of_get_child_by_name(dev->parent->of_node, + "charger"); + + if (!charger->psy_chg->of_node) + dev_err(charger->dev, + "of_get_child_by_name\n"); + + ret = power_supply_get_battery_info(charger->psy_chg, &info); + if (ret) { + dev_err(charger->dev, "Unable to get charger info\n"); + charger->fast_charge_current_ua = 15000; + } else { + charger->fast_charge_current_ua = + info->constant_charge_current_max_ua; + } + + if (charger->max77658->id != ID_MAX77659) + max77658_charger_parse_dt(charger); + + ret = max77658_charger_initialize(charger); + if (ret) + return dev_err_probe(dev, ret, + "Failed to initialize charger\n"); + + for (i = 0; i < n_irq; i++) { + charger->irq_arr[i] = + regmap_irq_get_virq(max77658->irqc_chg, i); + + if (charger->irq_arr[i] < 0) + return dev_err_probe(dev, -EINVAL, + "Invalid IRQ for MAX77658_CHG_IRQ %d\n", + i); + + ret = devm_request_threaded_irq(dev, charger->irq_arr[i], + NULL, max77658_charger_isr, + IRQF_TRIGGER_FALLING, + max77658_irq_descs[i], charger); + if (ret) + return dev_err_probe(dev, ret, + "Failed to request irq: %d\n", + charger->irq_arr[i]); + } + + ret = device_create_file(dev, &dev_attr_fast_charge_timer); + if (ret) + return dev_err_probe(dev, ret, + "Failed to create fast charge timer sysfs entry\n"); + + ret = device_create_file(dev, &dev_attr_topoff_timer); + if (ret) + return dev_err_probe(dev, ret, + "Failed to create topoff timer sysfs entry\n"); + + return 0; +} + +static int max77658_charger_remove(struct platform_device *pdev) +{ + device_remove_file(&pdev->dev, &dev_attr_topoff_timer); + device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer); + + return 0; +} + +static const struct of_device_id max77658_charger_of_id[] = { + { .compatible = "adi,max77654-charger" }, + { .compatible = "adi,max77658-charger" }, + { .compatible = "adi,max77659-charger" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, max77658_charger_of_id); + +static const struct platform_device_id max77658_charger_id[] = { + { "max77654-charger" }, + { "max77658-charger" }, + { "max77659-charger" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(platform, max77658_charger_id); + +static struct platform_driver max77658_charger_driver = { + .driver = { + .name = "max77658-charger", + .of_match_table = max77658_charger_of_id, + }, + .probe = max77658_charger_probe, + .remove = max77658_charger_remove, + .id_table = max77658_charger_id, +}; + +module_platform_driver(max77658_charger_driver); + +MODULE_DESCRIPTION("MAX77658 Charger Driver"); +MODULE_AUTHOR("Nurettin.Bolucu@analog.com, Zeynep.Arslanbenzer@analog.com"); +MODULE_LICENSE("GPL");