Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Fri, 16 Oct 2020 17:52:27 +0200
From:   Krzysztof Kozlowski <krzk@kernel.org>
To:     Gene Chen <gene.chen.richtek@gmail.com>
Cc:     sre@kernel.org, matthias.bgg@gmail.com, robh+dt@kernel.org,
        linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
        Gene Chen <gene_chen@richtek.com>
Subject: Re: [PATCH 2/2] power: supply: mt6360_charger: add MT6360 charger
 support
Message-ID: <20201016155227.GB9890@kozik-lap>
References: <1600859910-15855-1-git-send-email-gene.chen.richtek@gmail.com>
 <1600859910-15855-2-git-send-email-gene.chen.richtek@gmail.com>
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In-Reply-To: <1600859910-15855-2-git-send-email-gene.chen.richtek@gmail.com>
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On Wed, Sep 23, 2020 at 07:18:30PM +0800, Gene Chen wrote:
> From: Gene Chen <gene_chen@richtek.com>
> 
> Add basic support for the battery charger for MT6360 PMIC
> 
> Signed-off-by: Gene Chen <gene_chen@richtek.com>
> ---
>  drivers/power/supply/Kconfig          |   11 +
>  drivers/power/supply/Makefile         |    1 +
>  drivers/power/supply/mt6360_charger.c | 1190 +++++++++++++++++++++++++++++++++
>  3 files changed, 1202 insertions(+)
>  create mode 100644 drivers/power/supply/mt6360_charger.c
> 
> diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
> index faf2830..1beb6a4 100644
> --- a/drivers/power/supply/Kconfig
> +++ b/drivers/power/supply/Kconfig
> @@ -562,6 +562,17 @@ config CHARGER_MP2629
>  	  Battery charger. This driver provides Battery charger power management
>  	  functions on the systems.
>  
> +config CHARGER_MT6360
> +	tristate "Mediatek MT6360 Charger Driver"
> +	depends on MFD_MT6360

|| COMPILE_TEST
(and test if it really compiles)

> +	depends on REGULATOR
> +	select EXTCON

Drivers should in general not select other user-selectable symbols, so
this should be rather depends.

> +	help
> +	  Say Y here to enable MT6360 Charger Part.
> +	  support High-Accuracy Voltage/Current Regulation,

"The device suppports ..."

> +	  Average Input Current Regulation, Battery Tempature Sensing,
> +	  Over-Temperature Protection, DPDM Detection for BC1.2
> +
>  config CHARGER_QCOM_SMBB
>  	tristate "Qualcomm Switch-Mode Battery Charger and Boost"
>  	depends on MFD_SPMI_PMIC || COMPILE_TEST
> diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
> index b3c694a..9abecb9c 100644
> --- a/drivers/power/supply/Makefile
> +++ b/drivers/power/supply/Makefile
> @@ -77,6 +77,7 @@ obj-$(CONFIG_CHARGER_MAX77693)	+= max77693_charger.o
>  obj-$(CONFIG_CHARGER_MAX8997)	+= max8997_charger.o
>  obj-$(CONFIG_CHARGER_MAX8998)	+= max8998_charger.o
>  obj-$(CONFIG_CHARGER_MP2629)	+= mp2629_charger.o
> +obj-$(CONFIG_CHARGER_MT6360)	+= mt6360_charger.o
>  obj-$(CONFIG_CHARGER_QCOM_SMBB)	+= qcom_smbb.o
>  obj-$(CONFIG_CHARGER_BQ2415X)	+= bq2415x_charger.o
>  obj-$(CONFIG_CHARGER_BQ24190)	+= bq24190_charger.o
> diff --git a/drivers/power/supply/mt6360_charger.c b/drivers/power/supply/mt6360_charger.c
> new file mode 100644
> index 0000000..70e3fb6
> --- /dev/null
> +++ b/drivers/power/supply/mt6360_charger.c
> @@ -0,0 +1,1190 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2019 MediaTek Inc.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/kernel.h>
> +#include <linux/regmap.h>
> +#include <linux/platform_device.h>
> +#include <linux/of.h>
> +#include <linux/interrupt.h>
> +#include <linux/extcon-provider.h>
> +#include <linux/power_supply.h>
> +#include <linux/regulator/driver.h>
> +
> +#define MT6360_PMU_CHG_CTRL1			(0x11)

Drop all the brackets.

> +#define MT6360_PMU_CHG_CTRL2			(0x12)
> +#define MT6360_PMU_CHG_CTRL3			(0x13)
> +#define MT6360_PMU_CHG_CTRL4			(0x14)
> +#define MT6360_PMU_CHG_CTRL5			(0x15)
> +#define MT6360_PMU_CHG_CTRL6			(0x16)
> +#define MT6360_PMU_CHG_CTRL7			(0x17)
> +#define MT6360_PMU_CHG_CTRL8			(0x18)
> +#define MT6360_PMU_CHG_CTRL9			(0x19)
> +#define MT6360_PMU_CHG_CTRL10			(0x1A)
> +#define MT6360_PMU_CHG_CTRL11			(0x1B)
> +#define MT6360_PMU_CHG_CTRL12			(0x1C)
> +#define MT6360_PMU_CHG_CTRL13			(0x1D)
> +#define MT6360_PMU_DEVICE_TYPE			(0x22)
> +#define MT6360_PMU_USB_STATUS1			(0x27)
> +#define MT6360_PMU_CHG_CTRL17			(0x2B)
> +#define MT6360_PMU_CHG_CTRL18			(0x2C)
> +#define MT6360_PMU_CHG_STAT			(0x4A)
> +#define MT6360_PMU_CHG_CTRL19			(0x61)
> +#define MT6360_PMU_FOD_STAT			(0xE7)
> +
> +/* 0x11 */

Use name, not value in comment.

> +#define MT6360_MASK_FSLP	BIT(3)

Here and below - reverse the naming so:
MT6360_FSLP_MASK
MT6360_FSLP_SHIFT

Also don't duplicate the values, so:
#define MT6360_FSLP_MASK	BIT(MT6360_FSLP_SHIFT)
at least where this is only BIT().

> +#define MT6360_SHFT_FSLP	(3)
> +#define MT6360_MASK_HIZ		BIT(2)
> +#define MT6360_SHFT_HIZ		(2)
> +#define MT6360_MASK_OPA_MODE	BIT(0)
> +#define MT6360_SHFT_OPA_MODE	(0)
> +/* 0x12 */
> +#define MT6360_MASK_TE		BIT(4)
> +#define MT6360_SHFT_TE		(4)
> +#define MT6360_MASK_IINLMTSEL	GENMASK(3, 2)
> +#define MT6360_SHFT_IINLMTSEL	(2)
> +#define MT6360_MASK_CHG_EN	BIT(0)
> +#define MT6360_SHFT_CHG_EN	(0)
> +/* 0x13 */
> +#define MT6360_MASK_IAICR	GENMASK(7, 2)
> +#define MT6360_SHFT_IAICR	(2)
> +#define MT6360_MASK_ILIM_EN	BIT(0)
> +/* 0x14 */
> +#define MT6360_MASK_VOREG	GENMASK(7, 1)
> +#define MT6360_SHFT_VOREG	(1)
> +/* 0x15 */
> +#define MT6360_MASK_VOBST	GENMASK(7, 2)
> +/* 0x16 */
> +#define MT6360_MASK_VMIVR	GENMASK(7, 1)
> +#define MT6360_SHFT_VMIVR	(1)
> +/* 0x17 */
> +#define MT6360_MASK_ICHG	GENMASK(7, 2)
> +#define MT6360_SHFT_ICHG	(2)
> +/* 0x18 */
> +#define MT6360_MASK_IPREC	GENMASK(3, 0)
> +#define MT6360_SHFT_IPREC	(0)
> +/* 0x19 */
> +#define MT6360_MASK_IEOC	GENMASK(7, 4)
> +#define MT6360_SHFT_IEOC	(4)
> +/* 0x1A */
> +#define MT6360_MASK_LBP		GENMASK(7, 4)
> +#define MT6360_SHFT_LBP		(4)
> +#define MT6360_MASK_OTG_OC	GENMASK(3, 0)
> +#define MT6360_SHFT_OTG_OC	(0)
> +/* 0x1B */
> +#define MT6360_MASK_SYSREG	GENMASK(4, 2)
> +#define MT6360_SHFT_SYSREG	(2)
> +#define MT6360_MASK_VREC	GENMASK(2, 0)
> +#define MT6360_SHFT_VREC	(0)
> +/* 0x1C */
> +#define MT6360_MASK_WT_FC	GENMASK(7, 5)
> +#define MT6360_SHFT_WT_FC	(5)
> +/* 0x1D */
> +#define MT6360_MASK_CHG_WDT_EN	BIT(7)
> +#define MT6360_SHFT_CHG_WDT_EN	(7)
> +#define MT6360_MASK_CHG_WDT	GENMASK(5, 4)
> +#define MT6360_SHFT_CHG_WDT	(4)
> +/* 0x22 */
> +#define MT6360_MASK_USBCHGEN	BIT(7)
> +#define MT6360_SHFT_USBCHGEN	(7)
> +/* 0x27 */
> +#define MT6360_MASK_USB_STATUS	GENMASK(6, 4)
> +#define MT6360_SHFT_USB_STATUS	(4)
> +/* 0x2C */
> +#define MT6360_MASK_BAT_COMP	GENMASK(5, 3)
> +#define MT6360_SHFT_BAT_COMP	(3)
> +#define MT6360_MASK_VCLAMP	GENMASK(2, 0)
> +#define MT6360_SHFT_VCLAMP	(0)
> +/* 0x4A */
> +#define MT6360_MASK_CHG_STAT	GENMASK(7, 6)
> +#define MT6360_SHFT_CHG_STAT	(6)
> +#define MT6360_MASK_VBAT_LVL	BIT(5)
> +/* 0x61 */
> +#define MT6360_MASK_VINOVP	GENMASK(6, 5)
> +#define MT6360_SHFT_VINOVP	(5)
> +/* 0xE7 */
> +#define MT6360_MASK_CHRDET_EXT	BIT(4)
> +#define MT6360_SHFT_CHRDET_EXT	(4)
> +
> +/* uA */
> +#define MT6360_ICHG_MIN		100000
> +#define MT6360_ICHG_MAX		5000000
> +#define MT6360_ICHG_STEP	100000
> +/* uV */
> +#define MT6360_VOREG_MIN	3900000
> +#define MT6360_VOREG_MAX	4710000
> +#define MT6360_VOREG_STEP	10000
> +/* uA */
> +#define MT6360_AICR_MIN		100000
> +#define MT6360_AICR_MAX		3250000
> +#define MT6360_AICR_STEP	50000
> +/* uA */
> +#define MT6360_IPREC_MIN	100000
> +#define MT6360_IPREC_MAX	850000
> +#define MT6360_IPREC_STEP	50000
> +/* uA */
> +#define MT6360_IEOC_MIN		100000
> +#define MT6360_IEOC_MAX		850000
> +#define MT6360_IEOC_STEP	50000
> +
> +struct mt6360_chg_platform_data {
> +	u32 vinovp;
> +};
> +
> +struct mt6360_chg_info {
> +	struct device *dev;
> +	struct mt6360_chg_platform_data *pdata;
> +	struct regmap *regmap;
> +	struct extcon_dev *edev;
> +	struct power_supply_desc psy_desc;
> +	struct power_supply *psy;
> +	struct regulator_desc otg_rdesc;

This looks unused.

> +	struct regulator_dev *otg_rdev;
> +	struct mutex chgdet_lock;
> +	bool pwr_rdy;
> +	bool bc12_en;
> +	int psy_usb_type;
> +	struct work_struct chrdet_work;
> +};
> +
> +static struct mt6360_chg_platform_data def_platform_data = {
> +	.vinovp = 6500000,
> +};
> +
> +struct mt6360_irq_desc {
> +	const char *name;
> +	irq_handler_t irq_handler;
> +};
> +
> +enum mt6360_iinlmtsel {
> +	MT6360_IINLMTSEL_AICR_3250 = 0,
> +	MT6360_IINLMTSEL_CHG_TYPE,
> +	MT6360_IINLMTSEL_AICR,
> +	MT6360_IINLMTSEL_LOWER_LEVEL,
> +};
> +
> +enum mt6360_pmu_chg_type {
> +	MT6360_CHG_TYPE_NOVBUS = 0,
> +	MT6360_CHG_TYPE_UNDER_GOING,
> +	MT6360_CHG_TYPE_SDP,
> +	MT6360_CHG_TYPE_SDPNSTD,
> +	MT6360_CHG_TYPE_DCP,
> +	MT6360_CHG_TYPE_CDP,
> +	MT6360_CHG_TYPE_MAX,
> +};
> +
> +static enum power_supply_usb_type mt6360_charger_usb_types[] = {
> +	POWER_SUPPLY_USB_TYPE_UNKNOWN,
> +	POWER_SUPPLY_USB_TYPE_SDP,
> +	POWER_SUPPLY_USB_TYPE_DCP,
> +	POWER_SUPPLY_USB_TYPE_CDP,
> +	POWER_SUPPLY_USB_TYPE_C,
> +	POWER_SUPPLY_USB_TYPE_PD,
> +	POWER_SUPPLY_USB_TYPE_PD_DRP,
> +	POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID
> +};
> +
> +static inline unsigned int mt6360_trans_reg_sel(u32 data, u32 min_val, u32 step,
> +						u32 max_sel)

Drop all inlines.

> +{
> +	unsigned int target = 0;
> +
> +	if (data >= min_val)
> +		target = (data - min_val) / step;
> +	if (target > max_sel)
> +		target = max_sel;
> +	return target;
> +}
> +
> +static inline int mt6360_get_chrdet_ext_stat(struct mt6360_chg_info *mci,
> +					     bool *pwr_rdy)
> +{
> +	int ret;
> +	unsigned int regval;
> +
> +	ret = regmap_read(mci->regmap, MT6360_PMU_FOD_STAT, &regval);
> +	if (ret < 0)
> +		return ret;
> +	*pwr_rdy = (regval & MT6360_MASK_CHRDET_EXT) ? true : false;
> +	return 0;
> +}
> +
> +static int mt6360_charger_get_online(struct mt6360_chg_info *mci,
> +				     union power_supply_propval *val)
> +{
> +	int ret;
> +	bool pwr_rdy;
> +
> +	ret = mt6360_get_chrdet_ext_stat(mci, &pwr_rdy);
> +	if (ret < 0)
> +		return ret;
> +	val->intval = pwr_rdy ? true : false;
> +	return 0;
> +}
> +
> +static int mt6360_charger_get_status(struct mt6360_chg_info *mci,
> +				     union power_supply_propval *val)
> +{
> +	int status, ret;
> +	unsigned int regval;
> +	bool pwr_rdy;
> +
> +	ret = mt6360_get_chrdet_ext_stat(mci, &pwr_rdy);
> +	if (ret < 0)
> +		return ret;
> +	if (!pwr_rdy) {
> +		status = POWER_SUPPLY_STATUS_DISCHARGING;
> +		goto out;
> +	}
> +
> +	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_STAT, &regval);
> +	if (ret < 0)
> +		return ret;
> +	regval &= MT6360_MASK_CHG_STAT;
> +	regval >>= MT6360_SHFT_CHG_STAT;
> +	switch (regval) {
> +	case 0x0:
> +		status = POWER_SUPPLY_STATUS_NOT_CHARGING;
> +		break;
> +	case 0x1:
> +		status = POWER_SUPPLY_STATUS_CHARGING;
> +		break;
> +	case 0x2:
> +		status = POWER_SUPPLY_STATUS_FULL;
> +		break;
> +	default:
> +		ret = -EIO;
> +	}
> +out:
> +	if (!ret)
> +		val->intval = status;
> +	return ret;
> +}
> +
> +static int mt6360_charger_get_charge_type(struct mt6360_chg_info *mci,
> +					  union power_supply_propval *val)
> +{
> +	int type, ret;
> +	unsigned int regval;
> +	u8 chg_stat;
> +
> +	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_STAT, &regval);
> +	if (ret < 0)
> +		return ret;
> +	chg_stat = (regval & MT6360_MASK_CHG_STAT) >> MT6360_SHFT_CHG_STAT;
> +	switch (chg_stat) {
> +	case 0x00: /* Not Charging */
> +		type = POWER_SUPPLY_CHARGE_TYPE_NONE;
> +		break;
> +	case 0x01: /* Charge in Progress */
> +		if (regval & MT6360_MASK_VBAT_LVL)
> +			type = POWER_SUPPLY_CHARGE_TYPE_FAST;
> +		else
> +			type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
> +		break;
> +	case 0x02: /* Charge Done */
> +		type = POWER_SUPPLY_CHARGE_TYPE_NONE;
> +		break;
> +	case 0x03: /* Charge Fault */
> +		type = POWER_SUPPLY_STATUS_UNKNOWN;
> +		break;
> +	default:
> +		break;
> +	}
> +	val->intval = type;
> +	return 0;
> +}
> +
> +static int mt6360_charger_get_ichg(struct mt6360_chg_info *mci,
> +				   union power_supply_propval *val)
> +{
> +	int ichg, ret;
> +	unsigned int regval;
> +
> +	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL7, &regval);
> +	if (ret < 0)
> +		return ret;
> +	regval = (regval & MT6360_MASK_ICHG) >> MT6360_SHFT_ICHG;
> +	ichg = MT6360_ICHG_MIN + (regval * MT6360_ICHG_STEP);
> +	if (ichg > MT6360_ICHG_MAX)
> +		ichg = MT6360_ICHG_MAX;
> +	val->intval = ichg;
> +	return 0;
> +}
> +
> +static int mt6360_charger_get_max_ichg(struct mt6360_chg_info *mci,
> +				       union power_supply_propval *val)
> +{
> +	val->intval = MT6360_ICHG_MAX;
> +	return 0;
> +}
> +
> +static int mt6360_charger_get_cv(struct mt6360_chg_info *mci,
> +				 union power_supply_propval *val)
> +{
> +	int cv, ret;
> +	unsigned int regval;
> +
> +	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL4, &regval);
> +	if (ret < 0)
> +		return ret;
> +	regval = (regval & MT6360_MASK_VOREG) >> MT6360_SHFT_VOREG;
> +	cv = MT6360_VOREG_MIN + (regval * MT6360_VOREG_STEP);
> +	if (cv > MT6360_VOREG_MAX)
> +		cv = MT6360_VOREG_MAX;
> +	val->intval = cv;
> +	return 0;
> +}
> +
> +static int mt6360_charger_get_max_cv(struct mt6360_chg_info *mci,
> +				     union power_supply_propval *val)
> +{
> +	val->intval = MT6360_VOREG_MAX;
> +	return 0;
> +}
> +
> +static int mt6360_charger_get_aicr(struct mt6360_chg_info *mci,
> +				   union power_supply_propval *val)
> +{
> +	int ret;
> +	unsigned int regval;
> +
> +	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL3, &regval);
> +	if (ret < 0)
> +		return ret;
> +	regval = (regval & MT6360_MASK_IAICR) >> MT6360_SHFT_IAICR;
> +	val->intval = MT6360_AICR_MIN + (regval * MT6360_AICR_STEP);
> +	return 0;
> +}
> +
> +static int mt6360_charger_get_iprechg(struct mt6360_chg_info *mci,
> +				      union power_supply_propval *val)
> +{
> +	int ret;
> +	unsigned int regval;
> +
> +	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL8, &regval);
> +	if (ret < 0)
> +		return ret;
> +	regval = (regval & MT6360_MASK_IPREC) >> MT6360_SHFT_IPREC;
> +	val->intval = MT6360_IPREC_MIN + (regval * MT6360_IPREC_STEP);
> +	return 0;
> +}
> +
> +static int mt6360_charger_get_ieoc(struct mt6360_chg_info *mci,
> +				   union power_supply_propval *val)
> +{
> +	int ret;
> +	unsigned int regval;
> +
> +	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL9, &regval);
> +	if (ret < 0)
> +		return ret;
> +	regval = (regval & MT6360_MASK_IEOC) >> MT6360_SHFT_IEOC;
> +	val->intval = MT6360_IEOC_MIN + (regval * MT6360_IEOC_STEP);
> +	return 0;
> +}
> +
> +static int mt6360_charger_set_online(struct mt6360_chg_info *mci,
> +				     const union power_supply_propval *val)
> +{
> +	u8 force_sleep = val->intval ? 0 : 1;
> +
> +	return regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL1,
> +				  MT6360_MASK_FSLP,
> +				  force_sleep << MT6360_SHFT_FSLP);
> +}
> +
> +static int mt6360_charger_set_ichg(struct mt6360_chg_info *mci,
> +				   const union power_supply_propval *val)
> +{
> +	unsigned int regval;
> +
> +	regval = mt6360_trans_reg_sel(val->intval, 100000, 100000, 0x31);
> +	return regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL7,
> +				  MT6360_MASK_ICHG, regval << MT6360_SHFT_ICHG);
> +}
> +
> +static int mt6360_charger_set_cv(struct mt6360_chg_info *mci,
> +				 const union power_supply_propval *val)
> +{
> +	unsigned int regval;
> +
> +	regval = mt6360_trans_reg_sel(val->intval, 3900000, 10000, 0x51);
> +	return regmap_update_bits(mci->regmap,
> +				  MT6360_PMU_CHG_CTRL4,
> +				  MT6360_MASK_VOREG,
> +				  regval << MT6360_SHFT_VOREG);
> +}
> +
> +static int mt6360_charger_set_aicr(struct mt6360_chg_info *mci,
> +				   const union power_supply_propval *val)
> +{
> +	unsigned int regval;
> +
> +	regval = mt6360_trans_reg_sel(val->intval, 100000, 50000, 0x3F);
> +	return regmap_update_bits(mci->regmap,
> +				  MT6360_PMU_CHG_CTRL3,
> +				  MT6360_MASK_IAICR,
> +				  regval << MT6360_SHFT_IAICR);
> +}
> +
> +static int mt6360_charger_set_iprechg(struct mt6360_chg_info *mci,
> +				      const union power_supply_propval *val)
> +{
> +	unsigned int regval;
> +
> +	regval = mt6360_trans_reg_sel(val->intval, 100000, 50000, 0x0F);
> +	return regmap_update_bits(mci->regmap,
> +				  MT6360_PMU_CHG_CTRL8,
> +				  MT6360_MASK_IPREC,
> +				  regval << MT6360_SHFT_IPREC);
> +}
> +
> +static int mt6360_charger_set_ieoc(struct mt6360_chg_info *mci,
> +				   const union power_supply_propval *val)
> +{
> +	unsigned int regval;
> +
> +	regval = mt6360_trans_reg_sel(val->intval, 100000, 50000, 0x0F);
> +	return regmap_update_bits(mci->regmap,
> +				  MT6360_PMU_CHG_CTRL9,
> +				  MT6360_MASK_IEOC,
> +				  regval << MT6360_SHFT_IEOC);
> +}
> +
> +static int mt6360_charger_get_property(struct power_supply *psy,
> +				       enum power_supply_property psp,
> +				       union power_supply_propval *val)
> +{
> +	struct mt6360_chg_info *mci = power_supply_get_drvdata(psy);
> +	int ret = 0;
> +
> +	dev_dbg(mci->dev, "%s: prop = %d\n", __func__, psp);
> +	switch (psp) {
> +	case POWER_SUPPLY_PROP_ONLINE:
> +		ret = mt6360_charger_get_online(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_STATUS:
> +		ret = mt6360_charger_get_status(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_CHARGE_TYPE:
> +		ret = mt6360_charger_get_charge_type(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
> +		ret = mt6360_charger_get_ichg(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
> +		ret = mt6360_charger_get_max_ichg(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
> +		ret = mt6360_charger_get_cv(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
> +		ret = mt6360_charger_get_max_cv(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
> +		ret = mt6360_charger_get_aicr(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
> +		ret = mt6360_charger_get_iprechg(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
> +		ret = mt6360_charger_get_ieoc(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_USB_TYPE:
> +		val->intval = mci->psy_usb_type;
> +		break;
> +	default:
> +		ret = -ENODATA;
> +	}
> +	return ret;
> +}
> +
> +static int mt6360_charger_set_property(struct power_supply *psy,
> +				       enum power_supply_property psp,
> +				       const union power_supply_propval *val)
> +{
> +	struct mt6360_chg_info *mci = power_supply_get_drvdata(psy);
> +	int ret;
> +
> +	dev_dbg(mci->dev, "%s: prop = %d\n", __func__, psp);
> +	switch (psp) {
> +	case POWER_SUPPLY_PROP_ONLINE:
> +		ret = mt6360_charger_set_online(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
> +		ret = mt6360_charger_set_ichg(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
> +		ret = mt6360_charger_set_cv(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
> +		ret = mt6360_charger_set_aicr(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
> +		ret = mt6360_charger_set_iprechg(mci, val);
> +		break;
> +	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
> +		ret = mt6360_charger_set_ieoc(mci, val);
> +		break;
> +	default:
> +		ret = -EINVAL;
> +	}
> +	return ret;
> +}
> +
> +static int mt6360_charger_property_is_writeable(struct power_supply *psy,
> +					       enum power_supply_property psp)
> +{
> +	switch (psp) {
> +	case POWER_SUPPLY_PROP_ONLINE:
> +	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
> +	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
> +	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
> +	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
> +	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
> +		return 1;
> +	default:
> +		return 0;
> +	}
> +}
> +
> +static enum power_supply_property mt6360_charger_properties[] = {
> +	POWER_SUPPLY_PROP_ONLINE,
> +	POWER_SUPPLY_PROP_STATUS,
> +	POWER_SUPPLY_PROP_CHARGE_TYPE,
> +	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
> +	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
> +	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
> +	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
> +	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
> +	POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
> +	POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
> +	POWER_SUPPLY_PROP_USB_TYPE,
> +};
> +
> +static char *mt6360_charger_supplied_to[] = {
> +	"main-battery"
> +};
> +
> +static const struct power_supply_desc mt6360_charger_desc = {
> +	.type			= POWER_SUPPLY_TYPE_USB,
> +	.properties		= mt6360_charger_properties,
> +	.num_properties		= ARRAY_SIZE(mt6360_charger_properties),
> +	.get_property		= mt6360_charger_get_property,
> +	.set_property		= mt6360_charger_set_property,
> +	.property_is_writeable	= mt6360_charger_property_is_writeable,
> +	.usb_types		= mt6360_charger_usb_types,
> +	.num_usb_types		= ARRAY_SIZE(mt6360_charger_usb_types),
> +};
> +
> +static const struct regulator_ops mt6360_chg_otg_ops = {
> +	.list_voltage = regulator_list_voltage_linear,
> +	.enable = regulator_enable_regmap,
> +	.disable = regulator_disable_regmap,
> +	.is_enabled = regulator_is_enabled_regmap,
> +	.set_voltage_sel = regulator_set_voltage_sel_regmap,
> +	.get_voltage_sel = regulator_get_voltage_sel_regmap,
> +};
> +
> +static const struct regulator_desc mt6360_otg_rdesc = {
> +	.of_match = "usb-otg-vbus",
> +	.name = "usb-otg-vbus",
> +	.ops = &mt6360_chg_otg_ops,
> +	.owner = THIS_MODULE,
> +	.type = REGULATOR_VOLTAGE,
> +	.min_uV = 4425000,
> +	.uV_step = 25000, /* step  25mV */
> +	.n_voltages = 57, /* 4425mV to 5825mV */
> +	.vsel_reg = MT6360_PMU_CHG_CTRL5,
> +	.vsel_mask = MT6360_MASK_VOBST,
> +	.enable_reg = MT6360_PMU_CHG_CTRL1,
> +	.enable_mask = MT6360_MASK_OPA_MODE,
> +};
> +
> +static const unsigned int mt6360_extcon_cable[] = {
> +	EXTCON_USB,
> +	EXTCON_USB_HOST,
> +	EXTCON_CHG_USB_SDP,
> +	EXTCON_CHG_USB_DCP,
> +	EXTCON_CHG_USB_CDP,
> +	EXTCON_CHG_USB_SLOW, /* For NonStandard Charger */
> +	EXTCON_NONE,
> +};
> +
> +static irqreturn_t mt6360_pmu_chg_treg_evt_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_warn(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_pwr_rdy_evt_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_dbg(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_chg_batsysuv_evt_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_warn(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_chg_vsysuv_evt_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_warn(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_chg_vsysov_evt_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_warn(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_chg_vbatov_evt_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_warn(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_chg_vbusov_evt_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_warn(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_chg_aiccmeasl_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_dbg(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_wdtmri_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_dbg(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_chg_rechgi_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_dbg(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_chg_termi_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_dbg(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_chg_ieoci_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_dbg(mci->dev, "%s\n", __func__);
> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_pumpx_donei_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_dbg(mci->dev, "%s\n", __func__);

All this is looks bogus.

> +	return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t mt6360_pmu_attach_i_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +	int ret, chg_type = EXTCON_NONE;
> +	unsigned int usb_status;
> +	int last_usb_type;
> +
> +	dev_dbg(mci->dev, "%s\n", __func__);
> +	mutex_lock(&mci->chgdet_lock);
> +	if (!mci->bc12_en) {
> +		dev_info(mci->dev, "%s: bc12 disabled, ignore irq\n", __func__);
> +		goto out;
> +	}
> +	last_usb_type = mci->psy_usb_type;
> +	/* Plug in */
> +	ret = regmap_read(mci->regmap, MT6360_PMU_USB_STATUS1, &usb_status);
> +	if (ret < 0)
> +		goto out;
> +	usb_status &= MT6360_MASK_USB_STATUS;
> +	usb_status >>= MT6360_SHFT_USB_STATUS;
> +	switch (usb_status) {
> +	case MT6360_CHG_TYPE_UNDER_GOING:
> +		dev_info(mci->dev, "%s: under going...\n", __func__);
> +		goto out;
> +	case MT6360_CHG_TYPE_SDP:
> +		chg_type = EXTCON_CHG_USB_SDP;
> +		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
> +		break;
> +	case MT6360_CHG_TYPE_SDPNSTD:
> +		chg_type = EXTCON_CHG_USB_SLOW;
> +		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
> +		break;
> +	case MT6360_CHG_TYPE_CDP:
> +		chg_type = EXTCON_CHG_USB_CDP;
> +		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;
> +		break;
> +	case MT6360_CHG_TYPE_DCP:
> +		chg_type = EXTCON_CHG_USB_DCP;
> +		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
> +		break;
> +	default:
> +		dev_warn(mci->dev,
> +			 "%s: disconnect or unknown status\n", __func__);
> +		goto out;
> +	}
> +
> +	dev_info(mci->dev, "%s: chg_type = %d\n", __func__, chg_type);
> +	if (chg_type == EXTCON_CHG_USB_SDP || chg_type == EXTCON_CHG_USB_CDP) {
> +		extcon_set_state_sync(mci->edev, EXTCON_USB_HOST, false);
> +		extcon_set_state_sync(mci->edev, EXTCON_USB, true);
> +	}
> +	extcon_set_state_sync(mci->edev, chg_type, true);
> +	if (last_usb_type != mci->psy_usb_type)
> +		power_supply_changed(mci->psy);
> +out:
> +	mutex_unlock(&mci->chgdet_lock);
> +	return IRQ_HANDLED;
> +}
> +
> +static void mt6360_handle_chrdet_ext_evt(struct mt6360_chg_info *mci)
> +{
> +	int i, ret;
> +	bool pwr_rdy;
> +	int last_usb_type;
> +
> +	mutex_lock(&mci->chgdet_lock);
> +	ret = mt6360_get_chrdet_ext_stat(mci, &pwr_rdy);
> +	if (ret < 0)
> +		goto out;
> +	if (mci->pwr_rdy == pwr_rdy) {
> +		dev_info(mci->dev,
> +			 "%s: pwr_rdy is same(%d)\n", __func__, pwr_rdy);
> +		goto out;
> +	}
> +	mci->pwr_rdy = pwr_rdy;
> +	last_usb_type = mci->psy_usb_type;
> +	dev_info(mci->dev, "%s: pwr_rdy = %d\n", __func__, pwr_rdy);
> +	if (!pwr_rdy) {
> +		for (i = 0; i < ARRAY_SIZE(mt6360_extcon_cable) - 1; i++) {
> +			extcon_set_state_sync(mci->edev,
> +					      mt6360_extcon_cable[i], false);
> +		}
> +		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
> +		if (last_usb_type != mci->psy_usb_type)
> +			power_supply_changed(mci->psy);
> +
> +	}
> +	ret = regmap_update_bits(mci->regmap,
> +				 MT6360_PMU_DEVICE_TYPE,
> +				 MT6360_MASK_USBCHGEN,
> +				 pwr_rdy ? MT6360_MASK_USBCHGEN : 0);
> +	if (ret < 0)
> +		goto out;
> +	mci->bc12_en = pwr_rdy;
> +out:
> +	mutex_unlock(&mci->chgdet_lock);
> +}
> +
> +static void mt6360_chrdet_work(struct work_struct *work)
> +{
> +	struct mt6360_chg_info *mci = (struct mt6360_chg_info *)container_of(
> +				     work, struct mt6360_chg_info, chrdet_work);
> +
> +	dev_info(mci->dev, "%s\n", __func__);
> +	mt6360_handle_chrdet_ext_evt(mci);
> +}
> +
> +static irqreturn_t mt6360_pmu_chrdet_ext_evt_handler(int irq, void *data)
> +{
> +	struct mt6360_chg_info *mci = data;
> +
> +	dev_info(mci->dev, "%s\n", __func__);
> +	mt6360_handle_chrdet_ext_evt(mci);
> +	return IRQ_HANDLED;
> +}
> +
> +static const struct mt6360_irq_desc mt6360_chg_irq_desc[] = {
> +	{ "chg_treg_evt", mt6360_pmu_chg_treg_evt_handler },
> +	{ "pwr_rdy_evt", mt6360_pmu_pwr_rdy_evt_handler },
> +	{ "chg_batsysuv_evt", mt6360_pmu_chg_batsysuv_evt_handler },
> +	{ "chg_vsysuv_evt", mt6360_pmu_chg_vsysuv_evt_handler },
> +	{ "chg_vsysov_evt", mt6360_pmu_chg_vsysov_evt_handler },
> +	{ "chg_vbatov_evt", mt6360_pmu_chg_vbatov_evt_handler },
> +	{ "chg_vbusov_evt", mt6360_pmu_chg_vbusov_evt_handler },
> +	{ "chg_aiccmeasl", mt6360_pmu_chg_aiccmeasl_handler },
> +	{ "wdtmri", mt6360_pmu_wdtmri_handler },
> +	{ "chg_rechgi", mt6360_pmu_chg_rechgi_handler },
> +	{ "chg_termi", mt6360_pmu_chg_termi_handler },
> +	{ "chg_ieoci", mt6360_pmu_chg_ieoci_handler },
> +	{ "pumpx_donei", mt6360_pmu_pumpx_donei_handler },
> +	{ "attach_i", mt6360_pmu_attach_i_handler },
> +	{ "chrdet_ext_evt", mt6360_pmu_chrdet_ext_evt_handler },
> +};
> +
> +static int mt6360_chg_irq_register(struct platform_device *pdev)
> +{
> +	const struct mt6360_irq_desc *irq_desc;
> +	int i, irq, ret;
> +
> +	for (i = 0; i < ARRAY_SIZE(mt6360_chg_irq_desc); i++) {
> +		irq_desc = mt6360_chg_irq_desc + i;
> +		if (unlikely(!irq_desc->name))
> +			continue;

Can this happen?

> +		irq = platform_get_irq_byname(pdev, irq_desc->name);

Interrupts were not described in the bindings.

> +		if (irq < 0)
> +			continue;
> +		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
> +						irq_desc->irq_handler,
> +						IRQF_TRIGGER_FALLING,
> +						irq_desc->name,
> +						platform_get_drvdata(pdev));

Why you use handler thread per each interrupt? This should be rather one
handler. Especially that most of your handlers do nothing.

> +		if (ret < 0) {
> +			dev_err(&pdev->dev,
> +				"request %s irq fail\n", irq_desc->name);
> +			return ret;
> +		}
> +	}
> +	return 0;
> +}
> +
> +struct mt6360_field_info {
> +	struct device_attribute dev_attr;
> +	u8 reg;
> +	u8 mask;
> +	u8 shft;
> +};
> +
> +static ssize_t mt6360_sysfs_show(struct device *dev,
> +		struct device_attribute *attr, char *buf);
> +static ssize_t mt6360_sysfs_store(struct device *dev,
> +		struct device_attribute *attr, const char *buf, size_t count);
> +
> +#define MT6360_FIELD_RW(_name, _reg, _nbit)			\
> +{								\
> +	.dev_attr = __ATTR(_name, 0664,				\
> +		       mt6360_sysfs_show, mt6360_sysfs_store),	\
> +	.reg	= MT6360_PMU_##_reg,				\
> +	.mask	= MT6360_MASK_##_nbit,				\
> +	.shft	= MT6360_SHFT_##_nbit,				\
> +}
> +
> +#define MT6360_FIELD_RO(_name, _reg, _nbit)			\
> +{								\
> +	.dev_attr = __ATTR(_name, 0444,				\
> +			mt6360_sysfs_show, NULL),		\
> +	.reg	= MT6360_PMU_##_reg,				\
> +	.mask	= MT6360_MASK_##_nbit,				\
> +	.shft	= MT6360_SHFT_##_nbit,				\
> +}
> +
> +static struct mt6360_field_info mt6360_field_tbl[] = {
> +	MT6360_FIELD_RW(hiz,		CHG_CTRL1,	HIZ),
> +	MT6360_FIELD_RW(vmivr,		CHG_CTRL6,	VMIVR),
> +	MT6360_FIELD_RW(iaicr,		CHG_CTRL3,	IAICR),
> +	MT6360_FIELD_RW(SYSREG,		CHG_CTRL11,	SYSREG),
> +	MT6360_FIELD_RW(otg_oc,		CHG_CTRL10,	OTG_OC),
> +	MT6360_FIELD_RW(ichg,		CHG_CTRL17,	ICHG),
> +	MT6360_FIELD_RW(iprec,		CHG_CTRL8,	IPREC),
> +	MT6360_FIELD_RW(ieoc,		CHG_CTRL9,	IEOC),
> +	MT6360_FIELD_RW(voreg,		CHG_CTRL4,	VOREG),
> +	MT6360_FIELD_RW(lbp,		CHG_CTRL10,	LBP),
> +	MT6360_FIELD_RW(vrec,		CHG_CTRL11,	VREC),
> +	MT6360_FIELD_RW(te,		CHG_CTRL2,	TE),
> +	MT6360_FIELD_RW(chg_wdt_en,	CHG_CTRL13,	CHG_WDT_EN),
> +	MT6360_FIELD_RW(chg_wdt,	CHG_CTRL13,	CHG_WDT),
> +	MT6360_FIELD_RW(wt_fc,		CHG_CTRL12,	WT_FC),
> +	MT6360_FIELD_RW(bat_comp,	CHG_CTRL18,	BAT_COMP),
> +	MT6360_FIELD_RW(vclamp,		CHG_CTRL18,	VCLAMP),
> +	MT6360_FIELD_RW(usbchgen,	DEVICE_TYPE,	USBCHGEN),
> +	MT6360_FIELD_RW(chg_en,		CHG_CTRL2,	CHG_EN),
> +	MT6360_FIELD_RO(chrdet_ext,	FOD_STAT,	CHRDET_EXT),
> +};
> +
> +static struct attribute *mt6360_attrs[ARRAY_SIZE(mt6360_field_tbl) + 1];
> +
> +static const struct attribute_group mt6360_attr_group = {
> +	.attrs = mt6360_attrs,
> +};
> +
> +static ssize_t mt6360_sysfs_show(struct device *dev,
> +				 struct device_attribute *attr, char *buf)
> +{
> +	struct mt6360_chg_info *mci = dev_get_drvdata(dev->parent);
> +	struct mt6360_field_info *info = (void *)attr;
> +	unsigned int regval;
> +	int ret;
> +
> +	ret = regmap_read(mci->regmap, info->reg, &regval);
> +	if (ret < 0)
> +		return ret;
> +	regval = (regval & info->mask) >> info->shft;
> +	return scnprintf(buf, PAGE_SIZE, "%02x\n", regval);
> +}
> +
> +static ssize_t mt6360_sysfs_store(struct device *dev,
> +		   struct device_attribute *attr, const char *buf, size_t count)
> +{
> +	struct mt6360_chg_info *mci = dev_get_drvdata(dev->parent);
> +	struct mt6360_field_info *info = (void *)attr;
> +	int ret, tmp;
> +
> +	if (kstrtoint(buf, 10, &tmp) < 0) {
> +		dev_err(dev, "failed to parsing number\n");
> +		return -EINVAL;
> +	}
> +	ret = regmap_update_bits(mci->regmap,
> +				 info->reg, info->mask, tmp << info->shft);
> +	if (ret < 0)
> +		return ret;
> +	return count;
> +}
> +
> +static int mt6360_sysfs_create_group(struct mt6360_chg_info *mci)
> +{
> +	int i, tb_size = ARRAY_SIZE(mt6360_field_tbl);
> +
> +	for (i = 0; i < tb_size; i++)
> +		mt6360_attrs[i] = &(mt6360_field_tbl[i].dev_attr.attr);
> +	return devm_device_add_group(&mci->psy->dev, &mt6360_attr_group);
> +}
> +
> +static int mt6360_chg_init_setting(struct mt6360_chg_info *mci)
> +{
> +	int ret;
> +
> +	/* Disable bc12 */
> +	ret = regmap_update_bits(mci->regmap, MT6360_PMU_DEVICE_TYPE,
> +				 MT6360_MASK_USBCHGEN, 0);
> +	if (ret < 0) {
> +		dev_err(mci->dev, "%s: disable bc12 fail\n", __func__);
> +		goto out;
> +	}
> +	/* Set input current limit select by AICR */
> +	ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL2,
> +				 MT6360_MASK_IINLMTSEL,
> +				 MT6360_IINLMTSEL_AICR <<
> +					MT6360_SHFT_IINLMTSEL);
> +	if (ret < 0) {
> +		dev_err(mci->dev,
> +			"%s: switch iinlmtsel to aicr fail\n", __func__);
> +		goto out;
> +	}
> +	usleep_range(5000, 6000);
> +	/* Disable ilim */
> +	ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL3,
> +				 MT6360_MASK_ILIM_EN, 0);
> +	if (ret < 0) {
> +		dev_err(mci->dev,
> +			"%s: switch iinlmtsel to aicr fail\n", __func__);
> +		goto out;
> +	}
> +	/* Enlarge OTG_OC to max 3A */
> +	ret = regmap_update_bits(mci->regmap,
> +				 MT6360_PMU_CHG_CTRL10, 0x07, 0x07);
> +	if (ret < 0) {
> +		dev_err(mci->dev,
> +			"%s: faled config otg oc to maximum\n", __func__);
> +	}
> +out:
> +	return ret;
> +}
> +
> +static u32 mt6360_vinovp_trans_to_sel(u32 val)
> +{
> +	u32 vinovp_tbl[] = { 5500000, 6500000, 11000000, 14500000 };
> +	int i;
> +
> +	/* Select the smaller and equal supported value */
> +	for (i = 0; i < ARRAY_SIZE(vinovp_tbl)-1; i++) {
> +		if (val < vinovp_tbl[i+1])
> +			break;
> +	}
> +	return i;
> +}
> +
> +static struct mt6360_chg_platform_data *mt6360_parse_pdata(
> +						   struct platform_device *pdev)
> +{
> +	struct mt6360_chg_platform_data *pdata = dev_get_platdata(&pdev->dev);
> +	struct device_node *np = pdev->dev.of_node;
> +	int ret;
> +
> +	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
> +	if (!pdata)
> +		return ERR_PTR(-ENOMEM);
> +	memcpy(pdata, &def_platform_data, sizeof(*pdata));

Use kmemdup or something similar.

> +	ret = of_property_read_u32(np, "vinovp", &pdata->vinovp);
> +	if (ret) {
> +		dev_err(&pdev->dev, "failed to parse vinovp in DT\n");
> +		return ERR_PTR(ret);
> +	}
> +	return pdata;
> +}
> +
> +static int mt6360_apply_pdata(struct platform_device *pdev)
> +{
> +	struct mt6360_chg_platform_data *pdata = dev_get_platdata(&pdev->dev);
> +	struct mt6360_chg_info *mci = dev_get_drvdata(&pdev->dev);
> +	int ret;
> +	u32 sel;
> +
> +	sel = mt6360_vinovp_trans_to_sel(pdata->vinovp);
> +	ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL19,
> +				 MT6360_MASK_VINOVP, sel << MT6360_SHFT_VINOVP);
> +	if (ret)
> +		return ret;
> +	return 0;
> +}
> +
> +static int mt6360_charger_probe(struct platform_device *pdev)
> +{
> +	struct mt6360_chg_platform_data *pdata = dev_get_platdata(&pdev->dev);
> +	struct mt6360_chg_info *mci;
> +	struct power_supply_config charger_cfg = {};
> +	struct regulator_config config = { };
> +	int ret;
> +
> +	mci = devm_kzalloc(&pdev->dev, sizeof(*mci), GFP_KERNEL);
> +	if (!mci)
> +		return -ENOMEM;
> +
> +	pdata = mt6360_parse_pdata(pdev);
> +	if (IS_ERR_OR_NULL(pdata))
> +		return PTR_ERR(pdata);
> +
> +	pdev->dev.platform_data = pdata;
> +
> +	mci->dev = &pdev->dev;
> +	mutex_init(&mci->chgdet_lock);
> +	platform_set_drvdata(pdev, mci);
> +	INIT_WORK(&mci->chrdet_work, &mt6360_chrdet_work);
> +
> +	mci->regmap = dev_get_regmap(pdev->dev.parent, NULL);
> +	if (!mci->regmap) {
> +		dev_err(&pdev->dev, "Failed to get parent regmap\n");
> +		return -ENODEV;
> +	}
> +
> +	ret = mt6360_apply_pdata(pdev);
> +	if (ret) {
> +		dev_err(&pdev->dev, "Failed to apply pdata\n");
> +		return ret;
> +	}
> +
> +	mci->edev = devm_extcon_dev_allocate(&pdev->dev, mt6360_extcon_cable);
> +	if (IS_ERR(mci->edev)) {
> +		dev_err(&pdev->dev, "Failed to allocate memory for extcon\n");
> +		return -ENOMEM;
> +	}
> +
> +	ret = devm_extcon_dev_register(&pdev->dev, mci->edev);
> +	if (ret) {
> +		dev_err(&pdev->dev, "Failed to register extcon dev\n");
> +		return ret;
> +	}
> +
> +	memcpy(&mci->psy_desc, &mt6360_charger_desc, sizeof(mci->psy_desc));
> +	mci->psy_desc.name = dev_name(&pdev->dev);
> +	charger_cfg.drv_data = mci;
> +	charger_cfg.of_node = pdev->dev.of_node;
> +	charger_cfg.supplied_to = mt6360_charger_supplied_to;
> +	charger_cfg.num_supplicants = ARRAY_SIZE(mt6360_charger_supplied_to);
> +	mci->psy = devm_power_supply_register(&pdev->dev,
> +					      &mci->psy_desc, &charger_cfg);
> +	if (IS_ERR(mci->psy)) {
> +		dev_err(&pdev->dev, "Failed to register power supply dev\n");
> +		return PTR_ERR(mci->psy);
> +	}
> +
> +	ret = mt6360_chg_init_setting(mci);
> +	if (ret) {
> +		dev_err(&pdev->dev, "Failed to initial setting\n");
> +		return ret;
> +	}
> +
> +	schedule_work(&mci->chrdet_work);
> +
> +	ret = mt6360_chg_irq_register(pdev);
> +	if (ret) {
> +		dev_err(&pdev->dev, "Failed to register irqs\n");
> +		return ret;
> +	}
> +
> +	config.dev = &pdev->dev;
> +	config.regmap = mci->regmap;
> +	mci->otg_rdev = devm_regulator_register(&pdev->dev, &mt6360_otg_rdesc,
> +						&config);
> +	if (IS_ERR(mci->otg_rdev))
> +		return PTR_ERR(mci->otg_rdev);
> +
> +	ret = mt6360_sysfs_create_group(mci);
> +	if (ret) {
> +		dev_err(&pdev->dev,
> +			"%s: create sysfs attrs fail\n", __func__);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static const struct of_device_id __maybe_unused mt6360_charger_of_id[] = {
> +	{ .compatible = "mediatek,mt6360-chg", },
> +	{},
> +};
> +MODULE_DEVICE_TABLE(of, mt6360_charger_of_id);
> +
> +static const struct platform_device_id mt6360_charger_id[] = {
> +	{ "mt6360-chg", 0 },
> +	{},
> +};
> +MODULE_DEVICE_TABLE(platform, mt6360_charger_id);
> +
> +static struct platform_driver mt6360_charger_driver = {
> +	.driver = {
> +		.name = "mt6360-chg",
> +		.owner = THIS_MODULE,

Not needed. You did not run coccinelle, right?

> +		.of_match_table = of_match_ptr(mt6360_charger_of_id),
> +	},
> +	.probe = mt6360_charger_probe,
> +	.id_table = mt6360_charger_id,
> +};
> +module_platform_driver(mt6360_charger_driver);
> +
> +MODULE_AUTHOR("CY_Huang <cy_huang@richtek.com>");
> +MODULE_DESCRIPTION("MT6360 Charger Driver");
> +MODULE_LICENSE("GPL");
> +MODULE_VERSION("1.0.0");

Skip version.


All these comments were after looking briefly - I did not perform a
thorough review.  I am surprised that you combined regulator and charger
driver in one. It is doable but makes driver bigger and more difficult
to maintain. Consider splitting them.

Best regards,
Krzysztof