Commit a6a494c8 authored by Dzmitry Sankouski's avatar Dzmitry Sankouski Committed by Lee Jones
Browse files

power: supply: max77705: Add charger driver for Maxim 77705 



Add driver for Maxim 77705 switch-mode charger.
It providing power supply class information to userspace.

The driver is configured through DTS (battery and system related
settings).

Signed-off-by: default avatarDzmitry Sankouski <dsankouski@gmail.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20250123-starqltechn_integration_upstream-v17-3-8b06685b6612@gmail.com


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent 2ae4ffff

drivers/power/supply/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -583,6 +583,12 @@ config CHARGER_MAX77693 
	help

	  Say Y to enable support for the Maxim MAX77693 battery charger.



config CHARGER_MAX77705

	tristate "Maxim MAX77705 battery charger driver"

	depends on MFD_MAX77705

	help

	  Say Y to enable support for the Maxim MAX77705 battery charger.



config CHARGER_MAX77976

	tristate "Maxim MAX77976 battery charger driver"

	depends on I2C

drivers/power/supply/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -80,6 +80,7 @@ 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_MAX77693)	+= max77693_charger.o

obj-$(CONFIG_CHARGER_MAX77705)	+= max77705_charger.o

obj-$(CONFIG_CHARGER_MAX77976)	+= max77976_charger.o

obj-$(CONFIG_CHARGER_MAX8997)	+= max8997_charger.o

obj-$(CONFIG_CHARGER_MAX8998)	+= max8998_charger.o

drivers/power/supply/max77705_charger.c

0 → 100644
+581 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * Based on max77650-charger.c

 *

 * Copyright (C) 2025 Dzmitry Sankouski <dsankouski@gmail.org>

 *

 * Battery charger driver for MAXIM 77705 charger/power-supply.

 */



#include <linux/devm-helpers.h>

#include <linux/i2c.h>

#include <linux/interrupt.h>

#include <linux/mfd/max77693-common.h>

#include <linux/mfd/max77705-private.h>

#include <linux/power/max77705_charger.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/power_supply.h>

#include <linux/regmap.h>



static const char *max77705_charger_model		= "max77705";

static const char *max77705_charger_manufacturer	= "Maxim Integrated";



static const struct regmap_config max77705_chg_regmap_config = {

	.reg_base = MAX77705_CHG_REG_BASE,

	.reg_bits = 8,

	.val_bits = 8,

	.max_register = MAX77705_CHG_REG_SAFEOUT_CTRL,

};



static enum power_supply_property max77705_charger_props[] = {

	POWER_SUPPLY_PROP_ONLINE,

	POWER_SUPPLY_PROP_PRESENT,

	POWER_SUPPLY_PROP_STATUS,

	POWER_SUPPLY_PROP_CHARGE_TYPE,

	POWER_SUPPLY_PROP_HEALTH,

	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,

	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,

	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,

	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,

};



static int max77705_chgin_irq(void *irq_drv_data)

{

	struct max77705_charger_data *charger = irq_drv_data;



	queue_work(charger->wqueue, &charger->chgin_work);



	return 0;

}



static const struct regmap_irq max77705_charger_irqs[] = {

	{ .mask = MAX77705_BYP_IM,   },

	{ .mask = MAX77705_INP_LIMIT_IM,   },

	{ .mask = MAX77705_BATP_IM,   },

	{ .mask = MAX77705_BAT_IM,   },

	{ .mask = MAX77705_CHG_IM,   },

	{ .mask = MAX77705_WCIN_IM,   },

	{ .mask = MAX77705_CHGIN_IM,   },

	{ .mask = MAX77705_AICL_IM,   },

};



static struct regmap_irq_chip max77705_charger_irq_chip = {

	.name			= "max77705-charger",

	.status_base		= MAX77705_CHG_REG_INT,

	.mask_base		= MAX77705_CHG_REG_INT_MASK,

	.handle_post_irq	= max77705_chgin_irq,

	.num_regs		= 1,

	.irqs			= max77705_charger_irqs,

	.num_irqs		= ARRAY_SIZE(max77705_charger_irqs),

};



static int max77705_charger_enable(struct max77705_charger_data *chg)

{

	int rv;



	rv = regmap_update_bits(chg->regmap, MAX77705_CHG_REG_CNFG_09,

				MAX77705_CHG_EN_MASK, MAX77705_CHG_EN_MASK);

	if (rv)

		dev_err(chg->dev, "unable to enable the charger: %d\n", rv);



	return rv;

}



static void max77705_charger_disable(void *data)

{

	struct max77705_charger_data *chg = data;

	int rv;



	rv = regmap_update_bits(chg->regmap,

				MAX77705_CHG_REG_CNFG_09,

				MAX77705_CHG_EN_MASK,

				MAX77705_CHG_DISABLE);

	if (rv)

		dev_err(chg->dev, "unable to disable the charger: %d\n", rv);

}



static int max77705_get_online(struct regmap *regmap, int *val)

{

	unsigned int data;

	int ret;



	ret = regmap_read(regmap, MAX77705_CHG_REG_INT_OK, &data);

	if (ret < 0)

		return ret;



	*val = !!(data & MAX77705_CHGIN_OK);



	return 0;

}



static int max77705_check_battery(struct max77705_charger_data *charger, int *val)

{

	unsigned int reg_data;

	unsigned int reg_data2;

	struct regmap *regmap = charger->regmap;



	regmap_read(regmap, MAX77705_CHG_REG_INT_OK, &reg_data);



	dev_dbg(charger->dev, "CHG_INT_OK(0x%x)\n", reg_data);



	regmap_read(regmap, MAX77705_CHG_REG_DETAILS_00, &reg_data2);



	dev_dbg(charger->dev, "CHG_DETAILS00(0x%x)\n", reg_data2);



	if ((reg_data & MAX77705_BATP_OK) || !(reg_data2 & MAX77705_BATP_DTLS))

		*val = true;

	else

		*val = false;



	return 0;

}



static int max77705_get_charge_type(struct max77705_charger_data *charger, int *val)

{

	struct regmap *regmap = charger->regmap;

	unsigned int reg_data;



	regmap_read(regmap, MAX77705_CHG_REG_CNFG_09, &reg_data);

	if (!MAX77705_CHARGER_CHG_CHARGING(reg_data)) {

		*val = POWER_SUPPLY_CHARGE_TYPE_NONE;

		return 0;

	}



	regmap_read(regmap, MAX77705_CHG_REG_DETAILS_01, &reg_data);

	reg_data &= MAX77705_CHG_DTLS;



	switch (reg_data) {

	case 0x0:

	case MAX77705_CHARGER_CONSTANT_CURRENT:

	case MAX77705_CHARGER_CONSTANT_VOLTAGE:

		*val = POWER_SUPPLY_CHARGE_TYPE_FAST;

		return 0;

	default:

		*val = POWER_SUPPLY_CHARGE_TYPE_NONE;

		return 0;

	}



	return 0;

}



static int max77705_get_status(struct max77705_charger_data *charger, int *val)

{

	struct regmap *regmap = charger->regmap;

	unsigned int reg_data;



	regmap_read(regmap, MAX77705_CHG_REG_CNFG_09, &reg_data);

	if (!MAX77705_CHARGER_CHG_CHARGING(reg_data)) {

		*val = POWER_SUPPLY_CHARGE_TYPE_NONE;

		return 0;

	}



	regmap_read(regmap, MAX77705_CHG_REG_DETAILS_01, &reg_data);

	reg_data &= MAX77705_CHG_DTLS;



	switch (reg_data) {

	case 0x0:

	case MAX77705_CHARGER_CONSTANT_CURRENT:

	case MAX77705_CHARGER_CONSTANT_VOLTAGE:

		*val = POWER_SUPPLY_STATUS_CHARGING;

		return 0;

	case MAX77705_CHARGER_END_OF_CHARGE:

	case MAX77705_CHARGER_DONE:

		*val = POWER_SUPPLY_STATUS_FULL;

		return 0;

	/* those values hard coded as in vendor kernel, because of */

	/* failure to determine it's actual meaning. */

	case 0x05:

	case 0x06:

	case 0x07:

		*val = POWER_SUPPLY_STATUS_NOT_CHARGING;

		return 0;

	case 0x08:

	case 0xA:

	case 0xB:

		*val = POWER_SUPPLY_STATUS_DISCHARGING;

		return 0;

	default:

		*val = POWER_SUPPLY_STATUS_UNKNOWN;

		return 0;

	}



	return 0;

}



static int max77705_get_vbus_state(struct regmap *regmap, int *value)

{

	int ret;

	unsigned int charge_dtls;



	ret = regmap_read(regmap, MAX77705_CHG_REG_DETAILS_00, &charge_dtls);

	if (ret)

		return ret;



	charge_dtls = ((charge_dtls & MAX77705_CHGIN_DTLS) >>

			MAX77705_CHGIN_DTLS_SHIFT);



	switch (charge_dtls) {

	case 0x00:

		*value = POWER_SUPPLY_HEALTH_UNDERVOLTAGE;

		break;

	case 0x01:

		*value = POWER_SUPPLY_HEALTH_UNDERVOLTAGE;

		break;

	case 0x02:

		*value = POWER_SUPPLY_HEALTH_OVERVOLTAGE;

		break;

	case 0x03:

		*value = POWER_SUPPLY_HEALTH_GOOD;

		break;

	default:

		return 0;

	}

	return 0;

}



static int max77705_get_battery_health(struct max77705_charger_data *charger,

					int *value)

{

	struct regmap *regmap = charger->regmap;

	unsigned int bat_dtls;



	regmap_read(regmap, MAX77705_CHG_REG_DETAILS_01, &bat_dtls);

	bat_dtls = ((bat_dtls & MAX77705_BAT_DTLS) >> MAX77705_BAT_DTLS_SHIFT);



	switch (bat_dtls) {

	case MAX77705_BATTERY_NOBAT:

		dev_dbg(charger->dev, "%s: No battery and the charger is suspended\n",

			__func__);

		*value = POWER_SUPPLY_HEALTH_NO_BATTERY;

		break;

	case MAX77705_BATTERY_PREQUALIFICATION:

		dev_dbg(charger->dev, "%s: battery is okay but its voltage is low(~VPQLB)\n",

			__func__);

		break;

	case MAX77705_BATTERY_DEAD:

		dev_dbg(charger->dev, "%s: battery dead\n", __func__);

		*value = POWER_SUPPLY_HEALTH_DEAD;

		break;

	case MAX77705_BATTERY_GOOD:

	case MAX77705_BATTERY_LOWVOLTAGE:

		*value = POWER_SUPPLY_HEALTH_GOOD;

		break;

	case MAX77705_BATTERY_OVERVOLTAGE:

		dev_dbg(charger->dev, "%s: battery ovp\n", __func__);

		*value = POWER_SUPPLY_HEALTH_OVERVOLTAGE;

		break;

	default:

		dev_dbg(charger->dev, "%s: battery unknown\n", __func__);

		*value = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;

		break;

	}



	return 0;

}



static int max77705_get_health(struct max77705_charger_data *charger, int *val)

{

	struct regmap *regmap = charger->regmap;

	int ret, is_online = 0;



	ret = max77705_get_online(regmap, &is_online);

	if (ret)

		return ret;

	if (is_online) {

		ret = max77705_get_vbus_state(regmap, val);

		if (ret || (*val != POWER_SUPPLY_HEALTH_GOOD))

			return ret;

	}

	return max77705_get_battery_health(charger, val);

}



static int max77705_get_input_current(struct max77705_charger_data *charger,

					int *val)

{

	unsigned int reg_data;

	int get_current = 0;

	struct regmap *regmap = charger->regmap;



	regmap_read(regmap, MAX77705_CHG_REG_CNFG_09, &reg_data);



	reg_data &= MAX77705_CHG_CHGIN_LIM_MASK;



	if (reg_data <= 3)

		get_current = MAX77705_CURRENT_CHGIN_MIN;

	else if (reg_data >= MAX77705_CHG_CHGIN_LIM_MASK)

		get_current = MAX77705_CURRENT_CHGIN_MAX;

	else

		get_current = (reg_data + 1) * MAX77705_CURRENT_CHGIN_STEP;



	*val = get_current;



	return 0;

}



static int max77705_get_charge_current(struct max77705_charger_data *charger,

					int *val)

{

	unsigned int reg_data;

	struct regmap *regmap = charger->regmap;



	regmap_read(regmap, MAX77705_CHG_REG_CNFG_02, &reg_data);

	reg_data &= MAX77705_CHG_CC;



	*val = reg_data <= 0x2 ? MAX77705_CURRENT_CHGIN_MIN : reg_data * MAX77705_CURRENT_CHG_STEP;



	return 0;

}



static int max77705_set_float_voltage(struct max77705_charger_data *charger,

					int float_voltage)

{

	int float_voltage_mv;

	unsigned int reg_data = 0;

	struct regmap *regmap = charger->regmap;



	float_voltage_mv = float_voltage / 1000;

	reg_data = float_voltage_mv <= 4000 ? 0x0 :

		float_voltage_mv >= 4500 ? 0x23 :

		(float_voltage_mv <= 4200) ? (float_voltage_mv - 4000) / 50 :

		(((float_voltage_mv - 4200) / 10) + 0x04);



	return regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_04,

				MAX77705_CHG_CV_PRM_MASK,

				(reg_data << MAX77705_CHG_CV_PRM_SHIFT));

}



static int max77705_get_float_voltage(struct max77705_charger_data *charger,

					int *val)

{

	unsigned int reg_data = 0;

	int voltage_mv;

	struct regmap *regmap = charger->regmap;



	regmap_read(regmap, MAX77705_CHG_REG_CNFG_04, &reg_data);

	reg_data &= MAX77705_CHG_PRM_MASK;

	voltage_mv = reg_data <= 0x04 ? reg_data * 50 + 4000 :

					(reg_data - 4) * 10 + 4200;

	*val = voltage_mv * 1000;



	return 0;

}



static int max77705_chg_get_property(struct power_supply *psy,

					enum power_supply_property psp,

					union power_supply_propval *val)

{

	struct max77705_charger_data *charger = power_supply_get_drvdata(psy);

	struct regmap *regmap = charger->regmap;



	switch (psp) {

	case POWER_SUPPLY_PROP_ONLINE:

		return max77705_get_online(regmap, &val->intval);

	case POWER_SUPPLY_PROP_PRESENT:

		return max77705_check_battery(charger, &val->intval);

	case POWER_SUPPLY_PROP_STATUS:

		return max77705_get_status(charger, &val->intval);

	case POWER_SUPPLY_PROP_CHARGE_TYPE:

		return max77705_get_charge_type(charger, &val->intval);

	case POWER_SUPPLY_PROP_HEALTH:

		return max77705_get_health(charger, &val->intval);

	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:

		return max77705_get_input_current(charger, &val->intval);

	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:

		return max77705_get_charge_current(charger, &val->intval);

	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:

		return max77705_get_float_voltage(charger, &val->intval);

	case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:

		val->intval = charger->bat_info->voltage_max_design_uv;

		break;

	case POWER_SUPPLY_PROP_MODEL_NAME:

		val->strval = max77705_charger_model;

		break;

	case POWER_SUPPLY_PROP_MANUFACTURER:

		val->strval = max77705_charger_manufacturer;

		break;

	default:

		return -EINVAL;

	}

	return 0;

}



static const struct power_supply_desc max77705_charger_psy_desc = {

	.name = "max77705-charger",

	.type		= POWER_SUPPLY_TYPE_USB,

	.properties = max77705_charger_props,

	.num_properties = ARRAY_SIZE(max77705_charger_props),

	.get_property = max77705_chg_get_property,

};



static void max77705_chgin_isr_work(struct work_struct *work)

{

	struct max77705_charger_data *charger =

		container_of(work, struct max77705_charger_data, chgin_work);



	power_supply_changed(charger->psy_chg);

}



static void max77705_charger_initialize(struct max77705_charger_data *chg)

{

	u8 reg_data;

	struct power_supply_battery_info *info;

	struct regmap *regmap = chg->regmap;



	if (power_supply_get_battery_info(chg->psy_chg, &info) < 0)

		return;



	chg->bat_info = info;



	/* unlock charger setting protect */

	/* slowest LX slope */

	reg_data = MAX77705_CHGPROT_MASK | MAX77705_SLOWEST_LX_SLOPE;

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_06, reg_data,

						reg_data);



	/* fast charge timer disable */

	/* restart threshold disable */

	/* pre-qual charge disable */

	reg_data = (MAX77705_FCHGTIME_DISABLE << MAX77705_FCHGTIME_SHIFT) |

			(MAX77705_CHG_RSTRT_DISABLE << MAX77705_CHG_RSTRT_SHIFT) |

			(MAX77705_CHG_PQEN_DISABLE << MAX77705_PQEN_SHIFT);

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_01,

						(MAX77705_FCHGTIME_MASK |

						MAX77705_CHG_RSTRT_MASK |

						MAX77705_PQEN_MASK),

						reg_data);



	/* OTG off(UNO on), boost off */

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_00,

				MAX77705_OTG_CTRL, 0);



	/* charge current 450mA(default) */

	/* otg current limit 900mA */

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_02,

				MAX77705_OTG_ILIM_MASK,

				MAX77705_OTG_ILIM_900 << MAX77705_OTG_ILIM_SHIFT);



	/* BAT to SYS OCP 4.80A */

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_05,

				MAX77705_REG_B2SOVRC_MASK,

				MAX77705_B2SOVRC_4_8A << MAX77705_REG_B2SOVRC_SHIFT);

	/* top off current 150mA */

	/* top off timer 30min */

	reg_data = (MAX77705_TO_ITH_150MA << MAX77705_TO_ITH_SHIFT) |

			(MAX77705_TO_TIME_30M << MAX77705_TO_TIME_SHIFT) |

			(MAX77705_SYS_TRACK_DISABLE << MAX77705_SYS_TRACK_DIS_SHIFT);

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_03,

			   (MAX77705_TO_ITH_MASK |

			   MAX77705_TO_TIME_MASK |

			   MAX77705_SYS_TRACK_DIS_MASK), reg_data);



	/* cv voltage 4.2V or 4.35V */

	/* MINVSYS 3.6V(default) */

	if (info->voltage_max_design_uv < 0) {

		dev_warn(chg->dev, "missing battery:voltage-max-design-microvolt\n");

		max77705_set_float_voltage(chg, 4200000);

	} else {

		max77705_set_float_voltage(chg, info->voltage_max_design_uv);

	}



	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_12,

				MAX77705_VCHGIN_REG_MASK, MAX77705_VCHGIN_4_5);

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_12,

				MAX77705_WCIN_REG_MASK, MAX77705_WCIN_4_5);



	/* Watchdog timer */

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_00,

				MAX77705_WDTEN_MASK, 0);



	/* Active Discharge Enable */

	regmap_update_bits(regmap, MAX77705_PMIC_REG_MAINCTRL1, 1, 1);



	/* VBYPSET=5.0V */

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_11, MAX77705_VBYPSET_MASK, 0);



	/* Switching Frequency : 1.5MHz */

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_08, MAX77705_REG_FSW_MASK,

				(MAX77705_CHG_FSW_1_5MHz << MAX77705_REG_FSW_SHIFT));



	/* Auto skip mode */

	regmap_update_bits(regmap, MAX77705_CHG_REG_CNFG_12, MAX77705_REG_DISKIP_MASK,

				(MAX77705_AUTO_SKIP << MAX77705_REG_DISKIP_SHIFT));

}



static int max77705_charger_probe(struct i2c_client *i2c)

{

	struct power_supply_config pscfg = {};

	struct max77705_charger_data *chg;

	struct device *dev;

	struct regmap_irq_chip_data *irq_data;

	int ret;



	dev = &i2c->dev;



	chg = devm_kzalloc(dev, sizeof(*chg), GFP_KERNEL);

	if (!chg)

		return -ENOMEM;



	chg->dev = dev;

	i2c_set_clientdata(i2c, chg);



	chg->regmap = devm_regmap_init_i2c(i2c, &max77705_chg_regmap_config);

	if (IS_ERR(chg->regmap))

		return PTR_ERR(chg->regmap);



	ret = regmap_update_bits(chg->regmap,

				MAX77705_CHG_REG_INT_MASK,

				MAX77705_CHGIN_IM, 0);

	if (ret)

		return ret;



	pscfg.fwnode = dev_fwnode(dev);

	pscfg.drv_data = chg;



	chg->psy_chg = devm_power_supply_register(dev, &max77705_charger_psy_desc, &pscfg);

	if (IS_ERR(chg->psy_chg))

		return PTR_ERR(chg->psy_chg);



	max77705_charger_irq_chip.irq_drv_data = chg;

	ret = devm_regmap_add_irq_chip(chg->dev, chg->regmap, i2c->irq,

					IRQF_ONESHOT | IRQF_SHARED, 0,

					&max77705_charger_irq_chip,

					&irq_data);

	if (ret)

		return dev_err_probe(dev, ret, "failed to add irq chip\n");



	chg->wqueue = create_singlethread_workqueue(dev_name(dev));

	if (IS_ERR(chg->wqueue))

		return dev_err_probe(dev, PTR_ERR(chg->wqueue), "failed to create workqueue\n");



	ret = devm_work_autocancel(dev, &chg->chgin_work, max77705_chgin_isr_work);

	if (ret)

		return dev_err_probe(dev, ret, "failed to initialize interrupt work\n");



	max77705_charger_initialize(chg);



	ret = max77705_charger_enable(chg);

	if (ret)

		return dev_err_probe(dev, ret, "failed to enable charge\n");



	return devm_add_action_or_reset(dev, max77705_charger_disable, chg);

}



static const struct of_device_id max77705_charger_of_match[] = {

	{ .compatible = "maxim,max77705-charger" },

	{ }

};

MODULE_DEVICE_TABLE(of, max77705_charger_of_match);



static struct i2c_driver max77705_charger_driver = {

	.driver = {

		.name = "max77705-charger",

		.of_match_table = max77705_charger_of_match,

	},

	.probe = max77705_charger_probe,

};

module_i2c_driver(max77705_charger_driver);



MODULE_AUTHOR("Dzmitry Sankouski <dsankouski@gmail.com>");

MODULE_DESCRIPTION("Maxim MAX77705 charger driver");

MODULE_LICENSE("GPL");

include/linux/power/max77705_charger.h

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/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Maxim MAX77705 definitions.

 *

 * Copyright (C) 2015 Samsung Electronics, Inc.

 * Copyright (C) 2025 Dzmitry Sankouski <dsankouski@gmail.com>

 */



#ifndef __MAX77705_CHARGER_H

#define __MAX77705_CHARGER_H __FILE__



/* MAX77705_CHG_REG_CHG_INT */

#define MAX77705_BYP_I		BIT(0)

#define MAX77705_INP_LIMIT_I	BIT(1)

#define MAX77705_BATP_I		BIT(2)

#define MAX77705_BAT_I		BIT(3)

#define MAX77705_CHG_I		BIT(4)

#define MAX77705_WCIN_I		BIT(5)

#define MAX77705_CHGIN_I	BIT(6)

#define MAX77705_AICL_I		BIT(7)



/* MAX77705_CHG_REG_CHG_INT_MASK */

#define MAX77705_BYP_IM		BIT(0)

#define MAX77705_INP_LIMIT_IM	BIT(1)

#define MAX77705_BATP_IM	BIT(2)

#define MAX77705_BAT_IM		BIT(3)

#define MAX77705_CHG_IM		BIT(4)

#define MAX77705_WCIN_IM	BIT(5)

#define MAX77705_CHGIN_IM	BIT(6)

#define MAX77705_AICL_IM	BIT(7)



/* MAX77705_CHG_REG_CHG_INT_OK */

#define MAX77705_BYP_OK		BIT(0)

#define MAX77705_DISQBAT_OK	BIT(1)

#define MAX77705_BATP_OK	BIT(2)

#define MAX77705_BAT_OK		BIT(3)

#define MAX77705_CHG_OK		BIT(4)

#define MAX77705_WCIN_OK	BIT(5)

#define MAX77705_CHGIN_OK	BIT(6)

#define MAX77705_AICL_OK	BIT(7)



/* MAX77705_CHG_REG_DETAILS_00 */

#define MAX77705_BATP_DTLS		BIT(0)

#define MAX77705_WCIN_DTLS		GENMASK(4, 3)

#define MAX77705_WCIN_DTLS_SHIFT	3

#define MAX77705_CHGIN_DTLS		GENMASK(6, 5)

#define MAX77705_CHGIN_DTLS_SHIFT	5



/* MAX77705_CHG_REG_DETAILS_01 */

#define MAX77705_CHG_DTLS	GENMASK(3, 0)

#define MAX77705_CHG_DTLS_SHIFT	0

#define MAX77705_BAT_DTLS	GENMASK(6, 4)

#define MAX77705_BAT_DTLS_SHIFT	4



/* MAX77705_CHG_REG_DETAILS_02 */

#define MAX77705_BYP_DTLS	GENMASK(3, 0)

#define MAX77705_BYP_DTLS_SHIFT	0



/* MAX77705_CHG_REG_CNFG_00 */

#define MAX77705_CHG_SHIFT	0

#define MAX77705_UNO_SHIFT	1

#define MAX77705_OTG_SHIFT	1

#define MAX77705_BUCK_SHIFT	2

#define MAX77705_BOOST_SHIFT	3

#define MAX77705_WDTEN_SHIFT	4

#define MAX77705_MODE_MASK	GENMASK(3, 0)

#define MAX77705_CHG_MASK	BIT(MAX77705_CHG_SHIFT)

#define MAX77705_UNO_MASK	BIT(MAX77705_UNO_SHIFT)

#define MAX77705_OTG_MASK	BIT(MAX77705_OTG_SHIFT)

#define MAX77705_BUCK_MASK	BIT(MAX77705_BUCK_SHIFT)

#define MAX77705_BOOST_MASK	BIT(MAX77705_BOOST_SHIFT)

#define MAX77705_WDTEN_MASK	BIT(MAX77705_WDTEN_SHIFT)

#define MAX77705_UNO_CTRL	(MAX77705_UNO_MASK | MAX77705_BOOST_MASK)

#define MAX77705_OTG_CTRL	(MAX77705_OTG_MASK | MAX77705_BOOST_MASK)



/* MAX77705_CHG_REG_CNFG_01 */

#define MAX77705_FCHGTIME_SHIFT		0

#define MAX77705_FCHGTIME_MASK		GENMASK(2, 0)

#define MAX77705_CHG_RSTRT_SHIFT	4

#define MAX77705_CHG_RSTRT_MASK		GENMASK(5, 4)

#define MAX77705_FCHGTIME_DISABLE	0

#define MAX77705_CHG_RSTRT_DISABLE	0x3



#define MAX77705_PQEN_SHIFT		7

#define MAX77705_PQEN_MASK		BIT(7)

#define MAX77705_CHG_PQEN_DISABLE	0

#define MAX77705_CHG_PQEN_ENABLE	1



/* MAX77705_CHG_REG_CNFG_02 */

#define MAX77705_OTG_ILIM_SHIFT		6

#define MAX77705_OTG_ILIM_MASK		GENMASK(7, 6)

#define MAX77705_OTG_ILIM_500		0

#define MAX77705_OTG_ILIM_900		1

#define MAX77705_OTG_ILIM_1200		2

#define MAX77705_OTG_ILIM_1500		3

#define MAX77705_CHG_CC			GENMASK(5, 0)



/* MAX77705_CHG_REG_CNFG_03 */

#define MAX77705_TO_ITH_SHIFT		0

#define MAX77705_TO_ITH_MASK		GENMASK(2, 0)

#define MAX77705_TO_TIME_SHIFT		3

#define MAX77705_TO_TIME_MASK		GENMASK(5, 3)

#define MAX77705_SYS_TRACK_DIS_SHIFT	7

#define MAX77705_SYS_TRACK_DIS_MASK	BIT(7)

#define MAX77705_TO_ITH_150MA		0

#define MAX77705_TO_TIME_30M		3

#define MAX77705_SYS_TRACK_ENABLE	0

#define MAX77705_SYS_TRACK_DISABLE	1



/* MAX77705_CHG_REG_CNFG_04 */

#define MAX77705_CHG_MINVSYS_SHIFT	6

#define MAX77705_CHG_MINVSYS_MASK	GENMASK(7, 6)

#define MAX77705_CHG_PRM_SHIFT		0

#define MAX77705_CHG_PRM_MASK		GENMASK(5, 0)



#define MAX77705_CHG_CV_PRM_SHIFT	0

#define MAX77705_CHG_CV_PRM_MASK	GENMASK(5, 0)



/* MAX77705_CHG_REG_CNFG_05 */

#define MAX77705_REG_B2SOVRC_SHIFT	0

#define MAX77705_REG_B2SOVRC_MASK	GENMASK(3, 0)

#define MAX77705_B2SOVRC_DISABLE	0

#define MAX77705_B2SOVRC_4_5A		6

#define MAX77705_B2SOVRC_4_8A		8

#define MAX77705_B2SOVRC_5_0A		9



/* MAX77705_CHG_CNFG_06 */

#define MAX77705_WDTCLR_SHIFT		0

#define MAX77705_WDTCLR_MASK		GENMASK(1, 0)

#define MAX77705_WDTCLR			1

#define MAX77705_CHGPROT_MASK		GENMASK(3, 2)

#define MAX77705_CHGPROT_UNLOCKED	GENMASK(3, 2)

#define MAX77705_SLOWEST_LX_SLOPE	GENMASK(6, 5)



/* MAX77705_CHG_REG_CNFG_07 */

#define MAX77705_CHG_FMBST		4

#define MAX77705_REG_FMBST_SHIFT	2

#define MAX77705_REG_FMBST_MASK		BIT(MAX77705_REG_FMBST_SHIFT)

#define MAX77705_REG_FGSRC_SHIFT	1

#define MAX77705_REG_FGSRC_MASK		BIT(MAX77705_REG_FGSRC_SHIFT)



/* MAX77705_CHG_REG_CNFG_08 */

#define MAX77705_REG_FSW_SHIFT		0

#define MAX77705_REG_FSW_MASK		GENMASK(1, 0)

#define MAX77705_CHG_FSW_3MHz		0

#define MAX77705_CHG_FSW_2MHz		1

#define MAX77705_CHG_FSW_1_5MHz		2



/* MAX77705_CHG_REG_CNFG_09 */

#define MAX77705_CHG_CHGIN_LIM_MASK		GENMASK(6, 0)

#define MAX77705_CHG_EN_MASK			BIT(7)

#define MAX77705_CHG_DISABLE			0

#define MAX77705_CHARGER_CHG_CHARGING(_reg) \

				(((_reg) & MAX77705_CHG_EN_MASK) > 1)





/* MAX77705_CHG_REG_CNFG_10 */

#define MAX77705_CHG_WCIN_LIM		GENMASK(5, 0)



/* MAX77705_CHG_REG_CNFG_11 */

#define MAX77705_VBYPSET_SHIFT		0

#define MAX77705_VBYPSET_MASK		GENMASK(6, 0)



/* MAX77705_CHG_REG_CNFG_12 */

#define MAX77705_CHGINSEL_SHIFT		5

#define MAX77705_CHGINSEL_MASK		BIT(MAX77705_CHGINSEL_SHIFT)

#define MAX77705_WCINSEL_SHIFT		6

#define MAX77705_WCINSEL_MASK		BIT(MAX77705_WCINSEL_SHIFT)

#define MAX77705_VCHGIN_REG_MASK	GENMASK(4, 3)

#define MAX77705_WCIN_REG_MASK		GENMASK(2, 1)

#define MAX77705_REG_DISKIP_SHIFT	0

#define MAX77705_REG_DISKIP_MASK	BIT(MAX77705_REG_DISKIP_SHIFT)

/* REG=4.5V, UVLO=4.7V */

#define MAX77705_VCHGIN_4_5		0

/* REG=4.5V, UVLO=4.7V */

#define MAX77705_WCIN_4_5		0

#define MAX77705_DISABLE_SKIP		1

#define MAX77705_AUTO_SKIP		0



/* uA */

#define MAX77705_CURRENT_CHGIN_STEP	25000

#define MAX77705_CURRENT_CHG_STEP	50000

#define MAX77705_CURRENT_CHGIN_MIN	100000

#define MAX77705_CURRENT_CHGIN_MAX	3200000



struct max77705_charger_data {

	struct device			*dev;

	struct regmap		*regmap;

	struct power_supply_battery_info *bat_info;

	struct workqueue_struct *wqueue;

	struct work_struct	chgin_work;

	struct power_supply	*psy_chg;

};



#endif /* __MAX77705_CHARGER_H */