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Mon, 18 Jan 2021 04:42:02 -0800 (PST) From: Gene Chen To: sre@kernel.org, matthias.bgg@gmail.com, robh+dt@kernel.org Subject: [PATCH v4 2/2] power: supply: mt6360_charger: add MT6360 charger support Date: Mon, 18 Jan 2021 20:41:43 +0800 Message-Id: <1610973703-676-3-git-send-email-gene.chen.richtek@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1610973703-676-1-git-send-email-gene.chen.richtek@gmail.com> References: <1610973703-676-1-git-send-email-gene.chen.richtek@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210118_074205_221845_7A8EB97B X-CRM114-Status: GOOD ( 22.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gene_chen@richtek.com, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, cy_huang@richtek.com, benjamin.chao@mediatek.com, linux-mediatek@lists.infradead.org, Wilma.Wu@mediatek.com, linux-arm-kernel@lists.infradead.org, shufan_lee@richtek.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Gene Chen Add basic support for the battery charger for MT6360 PMIC Signed-off-by: Gene Chen --- drivers/power/supply/Kconfig | 10 + drivers/power/supply/Makefile | 1 + drivers/power/supply/mt6360_charger.c | 914 ++++++++++++++++++++++++++++++++++ 3 files changed, 925 insertions(+) create mode 100644 drivers/power/supply/mt6360_charger.c diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index eec646c..dd63bed 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -567,6 +567,16 @@ 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 + depends on REGULATOR + help + Say Y here to enable MT6360 Charger Part. + The device supports High-Accuracy Voltage/Current Regulation, + 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 dd4b863..9bd0804 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..d80bdad --- /dev/null +++ b/drivers/power/supply/mt6360_charger.c @@ -0,0 +1,914 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2021 MediaTek Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MT6360_PMU_CHG_CTRL1 0x311 +#define MT6360_PMU_CHG_CTRL2 0x312 +#define MT6360_PMU_CHG_CTRL3 0x313 +#define MT6360_PMU_CHG_CTRL4 0x314 +#define MT6360_PMU_CHG_CTRL5 0x315 +#define MT6360_PMU_CHG_CTRL6 0x316 +#define MT6360_PMU_CHG_CTRL7 0x317 +#define MT6360_PMU_CHG_CTRL8 0x318 +#define MT6360_PMU_CHG_CTRL9 0x319 +#define MT6360_PMU_CHG_CTRL10 0x31A +#define MT6360_PMU_DEVICE_TYPE 0x322 +#define MT6360_PMU_USB_STATUS1 0x327 +#define MT6360_PMU_CHG_STAT 0x34A +#define MT6360_PMU_CHG_CTRL19 0x361 +#define MT6360_PMU_FOD_STAT 0x3E7 + +/* MT6360_PMU_CHG_CTRL1 */ +#define MT6360_FSLP_SHFT (3) +#define MT6360_FSLP_MASK BIT(MT6360_FSLP_SHFT) +#define MT6360_OPA_MODE_SHFT (0) +#define MT6360_OPA_MODE_MASK BIT(MT6360_OPA_MODE_SHFT) +/* MT6360_PMU_CHG_CTRL2 */ +#define MT6360_IINLMTSEL_SHFT (2) +#define MT6360_IINLMTSEL_MASK GENMASK(3, 2) +/* MT6360_PMU_CHG_CTRL3 */ +#define MT6360_IAICR_SHFT (2) +#define MT6360_IAICR_MASK GENMASK(7, 2) +#define MT6360_ILIM_EN_MASK BIT(0) +/* MT6360_PMU_CHG_CTRL4 */ +#define MT6360_VOREG_SHFT (1) +#define MT6360_VOREG_MASK GENMASK(7, 1) +/* MT6360_PMU_CHG_CTRL5 */ +#define MT6360_VOBST_MASK GENMASK(7, 2) +/* MT6360_PMU_CHG_CTRL6 */ +#define MT6360_VMIVR_SHFT (1) +#define MT6360_VMIVR_MASK GENMASK(7, 1) +/* MT6360_PMU_CHG_CTRL7 */ +#define MT6360_ICHG_SHFT (2) +#define MT6360_ICHG_MASK GENMASK(7, 2) +/* MT6360_PMU_CHG_CTRL8 */ +#define MT6360_IPREC_SHFT (0) +#define MT6360_IPREC_MASK GENMASK(3, 0) +/* MT6360_PMU_CHG_CTRL9 */ +#define MT6360_IEOC_SHFT (4) +#define MT6360_IEOC_MASK GENMASK(7, 4) +/* MT6360_PMU_CHG_CTRL10 */ +#define MT6360_OTG_OC_MASK GENMASK(3, 0) +/* MT6360_PMU_DEVICE_TYPE */ +#define MT6360_USBCHGEN_MASK BIT(7) +/* MT6360_PMU_USB_STATUS1 */ +#define MT6360_USB_STATUS_SHFT (4) +#define MT6360_USB_STATUS_MASK GENMASK(6, 4) +/* MT6360_PMU_CHG_STAT */ +#define MT6360_CHG_STAT_SHFT (6) +#define MT6360_CHG_STAT_MASK GENMASK(7, 6) +#define MT6360_VBAT_LVL_MASK BIT(5) +/* MT6360_PMU_CHG_CTRL19 */ +#define MT6360_VINOVP_SHFT (5) +#define MT6360_VINOVP_MASK GENMASK(6, 5) +/* MT6360_PMU_FOD_STAT */ +#define MT6360_CHRDET_EXT_MASK BIT(4) + +/* uV */ +#define MT6360_VMIVR_MIN 3900000 +#define MT6360_VMIVR_MAX 13400000 +#define MT6360_VMIVR_STEP 100000 +/* 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_info { + struct device *dev; + struct regmap *regmap; + struct power_supply_desc psy_desc; + struct power_supply *psy; + struct regulator_dev *otg_rdev; + struct mutex chgdet_lock; + u32 vinovp; + bool pwr_rdy; + bool bc12_en; + int psy_usb_type; + struct work_struct chrdet_work; +}; + +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_DISABLE_BC12, + 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, +}; + +static unsigned int mt6360_map_reg_sel(u32 data, u32 min, u32 max, u32 step) +{ + u32 target = 0, max_sel; + + if (data >= min) { + target = (data - min) / step; + max_sel = (max - min) / step; + if (target > max_sel) + target = max_sel; + } + return target; +} + +static u32 mt6360_map_real_val(u32 sel, u32 min, u32 max, u32 step) +{ + u32 target = 0; + + target = min + (sel * step); + if (target > max) + target = max; + return target; +} + +static 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, ®val); + if (ret < 0) + return ret; + *pwr_rdy = (regval & MT6360_CHRDET_EXT_MASK) ? 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, ®val); + if (ret < 0) + return ret; + regval &= MT6360_CHG_STAT_MASK; + regval >>= MT6360_CHG_STAT_SHFT; + 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, ®val); + if (ret < 0) + return ret; + + chg_stat = (regval & MT6360_CHG_STAT_MASK) >> MT6360_CHG_STAT_SHFT; + switch (chg_stat) { + case 0x01: /* Charge in Progress */ + if (regval & MT6360_VBAT_LVL_MASK) + type = POWER_SUPPLY_CHARGE_TYPE_FAST; + else + type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + break; + case 0x00: /* Not Charging */ + case 0x02: /* Charge Done */ + case 0x03: /* Charge Fault */ + default: + type = POWER_SUPPLY_CHARGE_TYPE_NONE; + break; + } + + val->intval = type; + return 0; +} + +static int mt6360_charger_get_ichg(struct mt6360_chg_info *mci, + union power_supply_propval *val) +{ + int ret; + unsigned int regval; + + ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL7, ®val); + if (ret < 0) + return ret; + regval = (regval & MT6360_ICHG_MASK) >> MT6360_ICHG_SHFT; + val->intval = mt6360_map_real_val(regval, + MT6360_ICHG_MIN, + MT6360_ICHG_MAX, + MT6360_ICHG_STEP); + 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 ret; + unsigned int regval; + + ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL4, ®val); + if (ret < 0) + return ret; + regval = (regval & MT6360_VOREG_MASK) >> MT6360_VOREG_SHFT; + val->intval = mt6360_map_real_val(regval, + MT6360_VOREG_MIN, + MT6360_VOREG_MAX, + MT6360_VOREG_STEP); + 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, ®val); + if (ret < 0) + return ret; + regval = (regval & MT6360_IAICR_MASK) >> MT6360_IAICR_SHFT; + val->intval = mt6360_map_real_val(regval, + MT6360_AICR_MIN, + MT6360_AICR_MAX, + MT6360_AICR_STEP); + return 0; +} + +static int mt6360_charger_get_mivr(struct mt6360_chg_info *mci, + union power_supply_propval *val) +{ + int ret; + unsigned int regval; + + ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL6, ®val); + if (ret < 0) + return ret; + regval = (regval & MT6360_VMIVR_MASK) >> MT6360_VMIVR_SHFT; + val->intval = mt6360_map_real_val(regval, + MT6360_VMIVR_MIN, + MT6360_VMIVR_MAX, + MT6360_VMIVR_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, ®val); + if (ret < 0) + return ret; + regval = (regval & MT6360_IPREC_MASK) >> MT6360_IPREC_SHFT; + val->intval = mt6360_map_real_val(regval, + MT6360_IPREC_MIN, + MT6360_IPREC_MAX, + 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, ®val); + if (ret < 0) + return ret; + regval = (regval & MT6360_IEOC_MASK) >> MT6360_IEOC_SHFT; + val->intval = mt6360_map_real_val(regval, + MT6360_IEOC_MIN, + MT6360_IEOC_MAX, + 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_FSLP_MASK, + force_sleep << MT6360_FSLP_SHFT); +} + +static int mt6360_charger_set_ichg(struct mt6360_chg_info *mci, + const union power_supply_propval *val) +{ + u8 sel; + + sel = mt6360_map_reg_sel(val->intval, + MT6360_ICHG_MIN, + MT6360_ICHG_MAX, + MT6360_ICHG_STEP); + return regmap_update_bits(mci->regmap, + MT6360_PMU_CHG_CTRL7, + MT6360_ICHG_MASK, + sel << MT6360_ICHG_SHFT); +} + +static int mt6360_charger_set_cv(struct mt6360_chg_info *mci, + const union power_supply_propval *val) +{ + u8 sel; + + sel = mt6360_map_reg_sel(val->intval, + MT6360_VOREG_MIN, + MT6360_VOREG_MAX, + MT6360_VOREG_STEP); + return regmap_update_bits(mci->regmap, + MT6360_PMU_CHG_CTRL4, + MT6360_VOREG_MASK, + sel << MT6360_VOREG_SHFT); +} + +static int mt6360_charger_set_aicr(struct mt6360_chg_info *mci, + const union power_supply_propval *val) +{ + u8 sel; + + sel = mt6360_map_reg_sel(val->intval, + MT6360_AICR_MIN, + MT6360_AICR_MAX, + MT6360_AICR_STEP); + return regmap_update_bits(mci->regmap, + MT6360_PMU_CHG_CTRL3, + MT6360_IAICR_MASK, + sel << MT6360_IAICR_SHFT); +} + +static int mt6360_charger_set_mivr(struct mt6360_chg_info *mci, + const union power_supply_propval *val) +{ + u8 sel; + + sel = mt6360_map_reg_sel(val->intval, + MT6360_VMIVR_MIN, + MT6360_VMIVR_MAX, + MT6360_VMIVR_STEP); + return regmap_update_bits(mci->regmap, + MT6360_PMU_CHG_CTRL3, + MT6360_VMIVR_MASK, + sel << MT6360_VMIVR_SHFT); +} + +static int mt6360_charger_set_iprechg(struct mt6360_chg_info *mci, + const union power_supply_propval *val) +{ + u8 sel; + + sel = mt6360_map_reg_sel(val->intval, + MT6360_IPREC_MIN, + MT6360_IPREC_MAX, + MT6360_IPREC_STEP); + return regmap_update_bits(mci->regmap, + MT6360_PMU_CHG_CTRL8, + MT6360_IPREC_MASK, + sel << MT6360_IPREC_SHFT); +} + +static int mt6360_charger_set_ieoc(struct mt6360_chg_info *mci, + const union power_supply_propval *val) +{ + u8 sel; + + sel = mt6360_map_reg_sel(val->intval, + MT6360_IEOC_MIN, + MT6360_IEOC_MAX, + MT6360_IEOC_STEP); + return regmap_update_bits(mci->regmap, + MT6360_PMU_CHG_CTRL9, + MT6360_IEOC_MASK, + sel << MT6360_IEOC_SHFT); +} + +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; + + 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_INPUT_VOLTAGE_LIMIT: + ret = mt6360_charger_get_mivr(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; + + 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_INPUT_VOLTAGE_LIMIT: + ret = mt6360_charger_set_mivr(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_INPUT_VOLTAGE_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_INPUT_VOLTAGE_LIMIT, + POWER_SUPPLY_PROP_PRECHARGE_CURRENT, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, + POWER_SUPPLY_PROP_USB_TYPE, +}; + +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, + .n_voltages = 57, + .vsel_reg = MT6360_PMU_CHG_CTRL5, + .vsel_mask = MT6360_VOBST_MASK, + .enable_reg = MT6360_PMU_CHG_CTRL1, + .enable_mask = MT6360_OPA_MODE_MASK, +}; + +static irqreturn_t mt6360_pmu_attach_i_handler(int irq, void *data) +{ + struct mt6360_chg_info *mci = data; + int ret; + unsigned int usb_status; + int last_usb_type; + + mutex_lock(&mci->chgdet_lock); + if (!mci->bc12_en) { + dev_warn(mci->dev, "Received attach interrupt, bc12 disabled, ignore irq\n"); + 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_USB_STATUS_MASK; + usb_status >>= MT6360_USB_STATUS_SHFT; + switch (usb_status) { + case MT6360_CHG_TYPE_NOVBUS: + dev_dbg(mci->dev, "Received attach interrupt, no vbus\n"); + goto out; + case MT6360_CHG_TYPE_UNDER_GOING: + dev_dbg(mci->dev, "Received attach interrupt, under going...\n"); + goto out; + case MT6360_CHG_TYPE_SDP: + mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP; + break; + case MT6360_CHG_TYPE_SDPNSTD: + mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP; + break; + case MT6360_CHG_TYPE_CDP: + mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP; + break; + case MT6360_CHG_TYPE_DCP: + mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP; + break; + case MT6360_CHG_TYPE_DISABLE_BC12: + dev_dbg(mci->dev, "Received attach interrupt, bc12 detect not enable\n"); + goto out; + default: + dev_dbg(mci->dev, "Received attach interrupt, reserved address\n"); + goto out; + } + + dev_dbg(mci->dev, "Received attach interrupt, chg_type = %d\n", mci->psy_usb_type); + 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 ret; + bool pwr_rdy; + + 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_dbg(mci->dev, "Received vbus interrupt, pwr_rdy is same(%d)\n", pwr_rdy); + goto out; + } + mci->pwr_rdy = pwr_rdy; + dev_dbg(mci->dev, "Received vbus interrupt, pwr_rdy = %d\n", pwr_rdy); + if (!pwr_rdy) { + mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN; + power_supply_changed(mci->psy); + + } + ret = regmap_update_bits(mci->regmap, + MT6360_PMU_DEVICE_TYPE, + MT6360_USBCHGEN_MASK, + pwr_rdy ? MT6360_USBCHGEN_MASK : 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); + + 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; + + mt6360_handle_chrdet_ext_evt(mci); + return IRQ_HANDLED; +} + +static int mt6360_chg_irq_register(struct platform_device *pdev) +{ + const struct { + const char *name; + irq_handler_t handler; + } irq_descs[] = { + { "attach_i", mt6360_pmu_attach_i_handler }, + { "chrdet_ext_evt", mt6360_pmu_chrdet_ext_evt_handler } + }; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(irq_descs); i++) { + ret = platform_get_irq_byname(pdev, irq_descs[i].name); + if (ret < 0) + return ret; + + ret = devm_request_threaded_irq(&pdev->dev, ret, NULL, + irq_descs[i].handler, + IRQF_TRIGGER_FALLING, + irq_descs[i].name, + platform_get_drvdata(pdev)); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, "Failed to request %s irq\n", + irq_descs[i].name); + } + + return 0; +} + +struct mt6360_field_info { + struct device_attribute dev_attr; + u16 reg; + u8 mask; + u8 shft; +}; + +static int mt6360_chg_init_setting(struct mt6360_chg_info *mci) +{ + int ret; + + ret = regmap_update_bits(mci->regmap, MT6360_PMU_DEVICE_TYPE, + MT6360_USBCHGEN_MASK, 0); + if (ret) + return dev_err_probe(mci->dev, ret, "%s: Failed to disable bc12\n", __func__); + ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL2, + MT6360_IINLMTSEL_MASK, + MT6360_IINLMTSEL_AICR << + MT6360_IINLMTSEL_SHFT); + if (ret) + return dev_err_probe(mci->dev, ret, + "%s: Failed to switch iinlmtsel to aicr\n", __func__); + usleep_range(5000, 6000); + ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL3, + MT6360_ILIM_EN_MASK, 0); + if (ret) + return dev_err_probe(mci->dev, ret, + "%s: Failed to disable ilim\n", __func__); + ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL10, + MT6360_OTG_OC_MASK, MT6360_OTG_OC_MASK); + if (ret) + return dev_err_probe(mci->dev, ret, + "%s: Failed to config otg oc to 3A\n", __func__); + return 0; +} + +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 int mt6360_parse_dt(struct platform_device *pdev) +{ + struct mt6360_chg_info *mci = dev_get_drvdata(&pdev->dev); + int ret; + + ret = device_property_read_u32(&pdev->dev, "richtek,vinovp-microvolt", &mci->vinovp); + if (ret) + return dev_err_probe(&pdev->dev, ret, "Failed to parse vinovp in DT\n"); + return ret; +} + +static int mt6360_apply_dt(struct platform_device *pdev) +{ + struct mt6360_chg_info *mci = dev_get_drvdata(&pdev->dev); + u32 sel; + + sel = mt6360_vinovp_trans_to_sel(mci->vinovp); + return regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL19, + MT6360_VINOVP_MASK, sel << MT6360_VINOVP_SHFT); +} + +static int mt6360_charger_probe(struct platform_device *pdev) +{ + 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; + + ret = mt6360_parse_dt(pdev); + if (ret) + return dev_err_probe(&pdev->dev, ret, "Failed to parse dt\n"); + + mci->dev = &pdev->dev; + mci->vinovp = 6500000; + 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) + return dev_err_probe(&pdev->dev, -ENODEV, "Failed to get parent regmap\n"); + + ret = mt6360_apply_dt(pdev); + if (ret) + return dev_err_probe(&pdev->dev, ret, "Failed to apply dt\n"); + + 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; + mci->psy = devm_power_supply_register(&pdev->dev, + &mci->psy_desc, &charger_cfg); + if (IS_ERR(mci->psy)) + return dev_err_probe(&pdev->dev, PTR_ERR(mci->psy), + "Failed to register power supply dev\n"); + + ret = mt6360_chg_init_setting(mci); + if (ret) + return dev_err_probe(&pdev->dev, ret, "Failed to initial setting\n"); + + schedule_work(&mci->chrdet_work); + + ret = mt6360_chg_irq_register(pdev); + if (ret) + return dev_err_probe(&pdev->dev, ret, "Failed to register irqs\n"); + + 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); + + 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", + .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("Gene Chen "); +MODULE_DESCRIPTION("MT6360 Charger Driver"); +MODULE_LICENSE("GPL");