| Message ID | 20220805070610.3516-11-peterwu.pub@gmail.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere |
| Headers | show |
| Series | Add MediaTek MT6370 PMIC support | expand |
On Fri, Aug 5, 2022 at 9:07 AM ChiaEn Wu <peterwu.pub@gmail.com> wrote: > > From: ChiaEn Wu <chiaen_wu@richtek.com> > > MediaTek MT6370 is a SubPMIC consisting of a single cell battery charger > with ADC monitoring, RGB LEDs, dual channel flashlight, WLED backlight > driver, display bias voltage supply, one general purpose LDO, and the > USB Type-C & PD controller complies with the latest USB Type-C and PD > standards. > > Add a support for the MediaTek MT6370 Charger driver. The charger module > of MT6370 supports High-Accuracy Voltage/Current Regulation, > Average Input Current Regulation, Battery Temperature Sensing, > Over-Temperature Protection, DPDM Detection for BC1.2. On Fri, Aug 5, 2022 at 9:07 AM ChiaEn Wu <peterwu.pub@gmail.com> wrote: > > From: ChiYuan Huang <cy_huang@richtek.com> > > The MediaTek MT6370 is a highly-integrated smart power management IC, > which includes a single cell Li-Ion/Li-Polymer switching battery > charger, a USB Type-C & Power Delivery (PD) controller, dual > Flash LED current sources, a RGB LED driver, a backlight WLED driver, > a display bias driver and a general LDO for portable devices. > > Add a support for the Type-C & Power Delivery controller in > MediaTek MT6370 IC. FWIW, Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> > Signed-off-by: ChiaEn Wu <chiaen_wu@richtek.com> > --- > > v7 > - Revise the method to enable/disable irq > - Revise all 'if (ret < 0)' to 'if (ret)' after using > mt6370_chg_field_set/get() > - Revise all 'OTG' text > --- > drivers/power/supply/Kconfig | 14 + > drivers/power/supply/Makefile | 1 + > drivers/power/supply/mt6370-charger.c | 965 ++++++++++++++++++++++++++++++++++ > 3 files changed, 980 insertions(+) > create mode 100644 drivers/power/supply/mt6370-charger.c > > diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig > index 1aa8323..591deb8 100644 > --- a/drivers/power/supply/Kconfig > +++ b/drivers/power/supply/Kconfig > @@ -619,6 +619,20 @@ config CHARGER_MT6360 > Average Input Current Regulation, Battery Temperature Sensing, > Over-Temperature Protection, DPDM Detection for BC1.2. > > +config CHARGER_MT6370 > + tristate "MediaTek MT6370 Charger Driver" > + depends on MFD_MT6370 > + depends on REGULATOR > + select LINEAR_RANGES > + help > + Say Y here to enable MT6370 Charger Part. > + The device supports High-Accuracy Voltage/Current Regulation, > + Average Input Current Regulation, Battery Temperature Sensing, > + Over-Temperature Protection, DPDM Detection for BC1.2. > + > + This driver can also be built as a module. If so, the module > + will be called "mt6370-charger". > + > 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 7f02f36..8c95276 100644 > --- a/drivers/power/supply/Makefile > +++ b/drivers/power/supply/Makefile > @@ -82,6 +82,7 @@ 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-$(CONFIG_CHARGER_MT6370) += mt6370-charger.o > obj-$(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/mt6370-charger.c b/drivers/power/supply/mt6370-charger.c > new file mode 100644 > index 0000000..42fddc3 > --- /dev/null > +++ b/drivers/power/supply/mt6370-charger.c > @@ -0,0 +1,965 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2022 Richtek Technology Corp. > + * > + * Author: ChiaEn Wu <chiaen_wu@richtek.com> > + */ > + > +#include <linux/bitfield.h> > +#include <linux/bits.h> > +#include <linux/gpio/consumer.h> > +#include <linux/iio/consumer.h> > +#include <linux/init.h> > +#include <linux/interrupt.h> > +#include <linux/kernel.h> > +#include <linux/linear_range.h> > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/platform_device.h> > +#include <linux/power_supply.h> > +#include <linux/regmap.h> > +#include <linux/regulator/driver.h> > +#include <linux/workqueue.h> > + > +#define MT6370_REG_CHG_CTRL1 0x111 > +#define MT6370_REG_CHG_CTRL2 0x112 > +#define MT6370_REG_CHG_CTRL3 0x113 > +#define MT6370_REG_CHG_CTRL4 0x114 > +#define MT6370_REG_CHG_CTRL5 0x115 > +#define MT6370_REG_CHG_CTRL6 0x116 > +#define MT6370_REG_CHG_CTRL7 0x117 > +#define MT6370_REG_CHG_CTRL8 0x118 > +#define MT6370_REG_CHG_CTRL9 0x119 > +#define MT6370_REG_CHG_CTRL10 0x11A > +#define MT6370_REG_DEVICE_TYPE 0x122 > +#define MT6370_REG_USB_STATUS1 0x127 > +#define MT6370_REG_CHG_STAT 0x14A > +#define MT6370_REG_FLED_EN 0x17E > +#define MT6370_REG_CHG_STAT1 0X1D0 > +#define MT6370_REG_OVPCTRL_STAT 0x1D8 > + > +#define MT6370_VOBST_MASK GENMASK(7, 2) > +#define MT6370_OTG_PIN_EN_MASK BIT(1) > +#define MT6370_OPA_MODE_MASK BIT(0) > +#define MT6370_OTG_OC_MASK GENMASK(2, 0) > + > +#define MT6370_MIVR_IBUS_TH_100_mA 100000 > +#define MT6370_ADC_CHAN_IBUS 5 > +#define MT6370_ADC_CHAN_MAX 9 > + > +enum mt6370_chg_reg_field { > + /* MT6370_REG_CHG_CTRL2 */ > + F_IINLMTSEL, F_CFO_EN, F_CHG_EN, > + /* MT6370_REG_CHG_CTRL3 */ > + F_IAICR, F_AICR_EN, F_ILIM_EN, > + /* MT6370_REG_CHG_CTRL4 */ > + F_VOREG, > + /* MT6370_REG_CHG_CTRL6 */ > + F_VMIVR, > + /* MT6370_REG_CHG_CTRL7 */ > + F_ICHG, > + /* MT6370_REG_CHG_CTRL8 */ > + F_IPREC, > + /* MT6370_REG_CHG_CTRL9 */ > + F_IEOC, > + /* MT6370_REG_DEVICE_TYPE */ > + F_USBCHGEN, > + /* MT6370_REG_USB_STATUS1 */ > + F_USB_STAT, F_CHGDET, > + /* MT6370_REG_CHG_STAT */ > + F_CHG_STAT, F_BOOST_STAT, F_VBAT_LVL, > + /* MT6370_REG_FLED_EN */ > + F_FL_STROBE, > + /* MT6370_REG_CHG_STAT1 */ > + F_CHG_MIVR_STAT, > + /* MT6370_REG_OVPCTRL_STAT */ > + F_UVP_D_STAT, > + F_MAX > +}; > + > +enum mt6370_irq { > + MT6370_IRQ_ATTACH_I = 0, > + MT6370_IRQ_UVP_D_EVT, > + MT6370_IRQ_MIVR, > + MT6370_IRQ_MAX > +}; > + > +struct mt6370_priv { > + struct device *dev; > + struct iio_channel *iio_adcs; > + struct mutex attach_lock; > + struct power_supply *psy; > + struct regmap *regmap; > + struct regmap_field *rmap_fields[F_MAX]; > + struct regulator_dev *rdev; > + struct workqueue_struct *wq; > + struct work_struct bc12_work; > + struct delayed_work mivr_dwork; > + unsigned int irq_nums[MT6370_IRQ_MAX]; > + int attach; > + int psy_usb_type; > + bool pwr_rdy; > +}; > + > +enum mt6370_usb_status { > + MT6370_USB_STAT_NO_VBUS = 0, > + MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING, > + MT6370_USB_STAT_SDP, > + MT6370_USB_STAT_SDP_NSTD, > + MT6370_USB_STAT_DCP, > + MT6370_USB_STAT_CDP, > + MT6370_USB_STAT_MAX > +}; > + > +struct mt6370_chg_field { > + const char *name; > + const struct linear_range *range; > + struct reg_field field; > +}; > + > +enum { > + MT6370_RANGE_F_IAICR = 0, > + MT6370_RANGE_F_VOREG, > + MT6370_RANGE_F_VMIVR, > + MT6370_RANGE_F_ICHG, > + MT6370_RANGE_F_IPREC, > + MT6370_RANGE_F_IEOC, > + MT6370_RANGE_F_MAX > +}; > + > +#define MT6370_CHG_LINEAR_RANGE(_rfd, _min, _min_sel, _max_sel, _step) \ > +[_rfd] = { \ > + .min = _min, \ > + .min_sel = _min_sel, \ > + .max_sel = _max_sel, \ > + .step = _step, \ > +} > + > +static const struct linear_range mt6370_chg_ranges[MT6370_RANGE_F_MAX] = { > + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_IAICR, 100000, 0x0, 0x3F, 50000), > + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_VOREG, 3900000, 0x0, 0x51, 10000), > + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_VMIVR, 3900000, 0x0, 0x5F, 100000), > + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_ICHG, 900000, 0x08, 0x31, 100000), > + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_IPREC, 100000, 0x0, 0x0F, 50000), > + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_IEOC, 100000, 0x0, 0x0F, 50000), > +}; > + > +#define MT6370_CHG_FIELD(_fd, _reg, _lsb, _msb) \ > +[_fd] = { \ > + .name = #_fd, \ > + .range = NULL, \ > + .field = REG_FIELD(_reg, _lsb, _msb), \ > +} > + > +#define MT6370_CHG_FIELD_RANGE(_fd, _reg, _lsb, _msb) \ > +[_fd] = { \ > + .name = #_fd, \ > + .range = &mt6370_chg_ranges[MT6370_RANGE_##_fd], \ > + .field = REG_FIELD(_reg, _lsb, _msb), \ > +} > + > +static const struct mt6370_chg_field mt6370_chg_fields[F_MAX] = { > + MT6370_CHG_FIELD(F_IINLMTSEL, MT6370_REG_CHG_CTRL2, 2, 3), > + MT6370_CHG_FIELD(F_CFO_EN, MT6370_REG_CHG_CTRL2, 1, 1), > + MT6370_CHG_FIELD(F_CHG_EN, MT6370_REG_CHG_CTRL2, 0, 0), > + MT6370_CHG_FIELD_RANGE(F_IAICR, MT6370_REG_CHG_CTRL3, 2, 7), > + MT6370_CHG_FIELD(F_AICR_EN, MT6370_REG_CHG_CTRL3, 1, 1), > + MT6370_CHG_FIELD(F_ILIM_EN, MT6370_REG_CHG_CTRL3, 0, 0), > + MT6370_CHG_FIELD_RANGE(F_VOREG, MT6370_REG_CHG_CTRL4, 1, 7), > + MT6370_CHG_FIELD_RANGE(F_VMIVR, MT6370_REG_CHG_CTRL6, 1, 7), > + MT6370_CHG_FIELD_RANGE(F_ICHG, MT6370_REG_CHG_CTRL7, 2, 7), > + MT6370_CHG_FIELD_RANGE(F_IPREC, MT6370_REG_CHG_CTRL8, 0, 3), > + MT6370_CHG_FIELD_RANGE(F_IEOC, MT6370_REG_CHG_CTRL9, 4, 7), > + MT6370_CHG_FIELD(F_USBCHGEN, MT6370_REG_DEVICE_TYPE, 7, 7), > + MT6370_CHG_FIELD(F_USB_STAT, MT6370_REG_USB_STATUS1, 4, 6), > + MT6370_CHG_FIELD(F_CHGDET, MT6370_REG_USB_STATUS1, 3, 3), > + MT6370_CHG_FIELD(F_CHG_STAT, MT6370_REG_CHG_STAT, 6, 7), > + MT6370_CHG_FIELD(F_BOOST_STAT, MT6370_REG_CHG_STAT, 3, 3), > + MT6370_CHG_FIELD(F_VBAT_LVL, MT6370_REG_CHG_STAT, 5, 5), > + MT6370_CHG_FIELD(F_FL_STROBE, MT6370_REG_FLED_EN, 2, 2), > + MT6370_CHG_FIELD(F_CHG_MIVR_STAT, MT6370_REG_CHG_STAT1, 6, 6), > + MT6370_CHG_FIELD(F_UVP_D_STAT, MT6370_REG_OVPCTRL_STAT, 4, 4), > +}; > + > +static inline int mt6370_chg_field_get(struct mt6370_priv *priv, > + enum mt6370_chg_reg_field fd, > + unsigned int *val) > +{ > + int ret; > + unsigned int reg_val; > + > + ret = regmap_field_read(priv->rmap_fields[fd], ®_val); > + if (ret) > + return ret; > + > + if (mt6370_chg_fields[fd].range) > + return linear_range_get_value(mt6370_chg_fields[fd].range, > + reg_val, val); > + > + *val = reg_val; > + return 0; > +} > + > +static inline int mt6370_chg_field_set(struct mt6370_priv *priv, > + enum mt6370_chg_reg_field fd, > + unsigned int val) > +{ > + int ret; > + bool f; > + const struct linear_range *r; > + > + if (mt6370_chg_fields[fd].range) { > + r = mt6370_chg_fields[fd].range; > + > + if (fd == F_VMIVR) { > + ret = linear_range_get_selector_high(r, val, &val, &f); > + if (ret) > + val = r->max_sel; > + } else { > + linear_range_get_selector_within(r, val, &val); > + } > + } > + > + return regmap_field_write(priv->rmap_fields[fd], val); > +} > + > +enum { > + MT6370_CHG_STAT_READY = 0, > + MT6370_CHG_STAT_CHARGE_IN_PROGRESS, > + MT6370_CHG_STAT_DONE, > + MT6370_CHG_STAT_FAULT, > + MT6370_CHG_STAT_MAX > +}; > + > +enum { > + MT6370_ATTACH_STAT_DETACH = 0, > + MT6370_ATTACH_STAT_ATTACH_BC12_NOT_DONE, > + MT6370_ATTACH_STAT_ATTACH_BC12_DONE, > + MT6370_ATTACH_STAT_ATTACH_MAX > +}; > + > +static int mt6370_chg_otg_of_parse_cb(struct device_node *of, > + const struct regulator_desc *rdesc, > + struct regulator_config *rcfg) > +{ > + struct mt6370_priv *priv = rcfg->driver_data; > + > + rcfg->ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(of), > + "enable", 0, GPIOD_OUT_LOW | > + GPIOD_FLAGS_BIT_NONEXCLUSIVE, > + rdesc->name); > + if (IS_ERR(rcfg->ena_gpiod)) { > + rcfg->ena_gpiod = NULL; > + return 0; > + } > + > + return regmap_update_bits(priv->regmap, MT6370_REG_CHG_CTRL1, > + MT6370_OTG_PIN_EN_MASK, > + MT6370_OTG_PIN_EN_MASK); > +} > + > +static void mt6370_chg_bc12_work_func(struct work_struct *work) > +{ > + struct mt6370_priv *priv = container_of(work, struct mt6370_priv, > + bc12_work); > + int ret; > + bool rpt_psy = false; > + unsigned int attach, usb_stat; > + > + mutex_lock(&priv->attach_lock); > + attach = priv->attach; > + > + switch (attach) { > + case MT6370_ATTACH_STAT_DETACH: > + usb_stat = 0; > + break; > + case MT6370_ATTACH_STAT_ATTACH_BC12_DONE: > + ret = mt6370_chg_field_get(priv, F_USB_STAT, &usb_stat); > + if (ret) { > + dev_err(priv->dev, "Failed to get USB status\n"); > + goto bc12_work_func_out; > + } > + break; > + case MT6370_ATTACH_STAT_ATTACH_BC12_NOT_DONE: > + ret = mt6370_chg_field_set(priv, F_USBCHGEN, attach); > + if (ret) > + dev_err(priv->dev, "Failed to enable USB CHG EN\n"); > + goto bc12_work_func_out; > + default: > + dev_err(priv->dev, "Invalid attach state\n"); > + goto bc12_work_func_out; > + } > + > + rpt_psy = true; > + > + switch (usb_stat) { > + case MT6370_USB_STAT_SDP: > + case MT6370_USB_STAT_SDP_NSTD: > + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP; > + break; > + case MT6370_USB_STAT_DCP: > + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP; > + break; > + case MT6370_USB_STAT_CDP: > + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP; > + break; > + case MT6370_USB_STAT_NO_VBUS: > + case MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING: > + default: > + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN; > + break; > + } > + > +bc12_work_func_out: > + mutex_unlock(&priv->attach_lock); > + > + if (rpt_psy) > + power_supply_changed(priv->psy); > +} > + > +static int mt6370_chg_toggle_cfo(struct mt6370_priv *priv) > +{ > + int ret; > + unsigned int fl_strobe; > + > + /* check if flash led in strobe mode */ > + ret = mt6370_chg_field_get(priv, F_FL_STROBE, &fl_strobe); > + if (ret) { > + dev_err(priv->dev, "Failed to get FL_STROBE_EN\n"); > + return ret; > + } > + > + if (fl_strobe) { > + dev_err(priv->dev, "Flash led is still in strobe mode\n"); > + return ret; > + } > + > + /* cfo off */ > + ret = mt6370_chg_field_set(priv, F_CFO_EN, 0); > + if (ret) { > + dev_err(priv->dev, "Failed to disable CFO_EN\n"); > + return ret; > + } > + > + /* cfo on */ > + ret = mt6370_chg_field_set(priv, F_CFO_EN, 1); > + if (ret) > + dev_err(priv->dev, "Failed to enable CFO_EN\n"); > + > + return ret; > +} > + > +static int mt6370_chg_read_adc_chan(struct mt6370_priv *priv, unsigned int chan, > + int *val) > +{ > + int ret; > + > + if (chan >= MT6370_ADC_CHAN_MAX) > + return -EINVAL; > + > + ret = iio_read_channel_processed(&priv->iio_adcs[chan], val); > + if (ret) > + dev_err(priv->dev, "Failed to read ADC\n"); > + > + return ret; > +} > + > +static void mt6370_chg_mivr_dwork_func(struct work_struct *work) > +{ > + struct mt6370_priv *priv = container_of(work, struct mt6370_priv, > + mivr_dwork.work); > + int ret; > + unsigned int mivr_stat, ibus; > + > + ret = mt6370_chg_field_get(priv, F_CHG_MIVR_STAT, &mivr_stat); > + if (ret) { > + dev_err(priv->dev, "Failed to get mivr state\n"); > + goto mivr_handler_out; > + } > + > + if (!mivr_stat) > + goto mivr_handler_out; > + > + ret = mt6370_chg_read_adc_chan(priv, MT6370_ADC_CHAN_IBUS, &ibus); > + if (ret) { > + dev_err(priv->dev, "Failed to get ibus\n"); > + goto mivr_handler_out; > + } > + > + if (ibus < MT6370_MIVR_IBUS_TH_100_mA) { > + ret = mt6370_chg_toggle_cfo(priv); > + if (ret) > + dev_err(priv->dev, "Failed to toggle cfo\n"); > + } > + > +mivr_handler_out: > + enable_irq(priv->irq_nums[MT6370_IRQ_MIVR]); > + pm_relax(priv->dev); > +} > + > +static void mt6370_chg_pwr_rdy_check(struct mt6370_priv *priv) > +{ > + int ret; > + unsigned int pwr_rdy, otg_en; > + union power_supply_propval val; > + > + /* Check in OTG mode or not */ > + ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en); > + if (ret) { > + dev_err(priv->dev, "Failed to get OTG state\n"); > + return; > + } > + > + if (otg_en) > + return; > + > + ret = mt6370_chg_field_get(priv, F_UVP_D_STAT, &pwr_rdy); > + if (ret) { > + dev_err(priv->dev, "Failed to get pwr_rdy state reg\n"); > + return; > + } > + > + val.intval = !pwr_rdy; > + > + ret = power_supply_set_property(priv->psy, POWER_SUPPLY_PROP_ONLINE, > + &val); > + if (ret) > + dev_err(priv->dev, "Failed to start attach/detach flow\n"); > +} > + > +static int mt6370_chg_get_online(struct mt6370_priv *priv, > + union power_supply_propval *val) > +{ > + mutex_lock(&priv->attach_lock); > + val->intval = !!priv->attach; > + mutex_unlock(&priv->attach_lock); > + > + return 0; > +} > + > +static int mt6370_chg_get_status(struct mt6370_priv *priv, > + union power_supply_propval *val) > +{ > + int ret; > + unsigned int chg_stat; > + union power_supply_propval online; > + > + ret = power_supply_get_property(priv->psy, POWER_SUPPLY_PROP_ONLINE, > + &online); > + if (ret) { > + dev_err(priv->dev, "Failed to get online status\n"); > + return ret; > + } > + > + if (!online.intval) { > + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; > + return 0; > + } > + > + ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat); > + if (ret) > + return ret; > + > + switch (chg_stat) { > + case MT6370_CHG_STAT_READY: > + case MT6370_CHG_STAT_FAULT: > + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; > + return ret; > + case MT6370_CHG_STAT_CHARGE_IN_PROGRESS: > + val->intval = POWER_SUPPLY_STATUS_CHARGING; > + return ret; > + case MT6370_CHG_STAT_DONE: > + val->intval = POWER_SUPPLY_STATUS_FULL; > + return ret; > + default: > + val->intval = POWER_SUPPLY_STATUS_UNKNOWN; > + return ret; > + } > +} > + > +static int mt6370_chg_get_charge_type(struct mt6370_priv *priv, > + union power_supply_propval *val) > +{ > + int type, ret; > + unsigned int chg_stat, vbat_lvl; > + > + ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat); > + if (ret) > + return ret; > + > + ret = mt6370_chg_field_get(priv, F_VBAT_LVL, &vbat_lvl); > + if (ret) > + return ret; > + > + switch (chg_stat) { > + case MT6370_CHG_STAT_CHARGE_IN_PROGRESS: > + if (vbat_lvl) > + type = POWER_SUPPLY_CHARGE_TYPE_FAST; > + else > + type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; > + break; > + case MT6370_CHG_STAT_READY: > + case MT6370_CHG_STAT_DONE: > + case MT6370_CHG_STAT_FAULT: > + default: > + type = POWER_SUPPLY_CHARGE_TYPE_NONE; > + break; > + } > + > + val->intval = type; > + > + return 0; > +} > + > +static int mt6370_chg_set_online(struct mt6370_priv *priv, > + const union power_supply_propval *val) > +{ > + bool pwr_rdy = !!val->intval; > + > + mutex_lock(&priv->attach_lock); > + if (pwr_rdy == !!priv->attach) { > + dev_err(priv->dev, "pwr_rdy is same(%d)\n", pwr_rdy); > + mutex_unlock(&priv->attach_lock); > + return 0; > + } > + > + priv->attach = pwr_rdy; > + mutex_unlock(&priv->attach_lock); > + > + if (!queue_work(priv->wq, &priv->bc12_work)) > + dev_err(priv->dev, "bc12 work has already queued\n"); > + > + return 0; > +} > + > +static int mt6370_chg_get_property(struct power_supply *psy, > + enum power_supply_property psp, > + union power_supply_propval *val) > +{ > + struct mt6370_priv *priv = power_supply_get_drvdata(psy); > + > + switch (psp) { > + case POWER_SUPPLY_PROP_ONLINE: > + return mt6370_chg_get_online(priv, val); > + case POWER_SUPPLY_PROP_STATUS: > + return mt6370_chg_get_status(priv, val); > + case POWER_SUPPLY_PROP_CHARGE_TYPE: > + return mt6370_chg_get_charge_type(priv, val); > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: > + return mt6370_chg_field_get(priv, F_ICHG, &val->intval); > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: > + val->intval = linear_range_get_max_value(&mt6370_chg_ranges[MT6370_RANGE_F_ICHG]); > + return 0; > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: > + return mt6370_chg_field_get(priv, F_VOREG, &val->intval); > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: > + val->intval = linear_range_get_max_value(&mt6370_chg_ranges[MT6370_RANGE_F_VOREG]); > + return 0; > + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: > + return mt6370_chg_field_get(priv, F_IAICR, &val->intval); > + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: > + return mt6370_chg_field_get(priv, F_VMIVR, &val->intval); > + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: > + return mt6370_chg_field_get(priv, F_IPREC, &val->intval); > + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: > + return mt6370_chg_field_get(priv, F_IEOC, &val->intval); > + case POWER_SUPPLY_PROP_USB_TYPE: > + val->intval = priv->psy_usb_type; > + return 0; > + default: > + return -EINVAL; > + } > +} > + > +static int mt6370_chg_set_property(struct power_supply *psy, > + enum power_supply_property psp, > + const union power_supply_propval *val) > +{ > + struct mt6370_priv *priv = power_supply_get_drvdata(psy); > + > + switch (psp) { > + case POWER_SUPPLY_PROP_ONLINE: > + return mt6370_chg_set_online(priv, val); > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: > + return mt6370_chg_field_set(priv, F_ICHG, val->intval); > + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: > + return mt6370_chg_field_set(priv, F_VOREG, val->intval); > + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: > + return mt6370_chg_field_set(priv, F_IAICR, val->intval); > + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: > + return mt6370_chg_field_set(priv, F_VMIVR, val->intval); > + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: > + return mt6370_chg_field_set(priv, F_IPREC, val->intval); > + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: > + return mt6370_chg_field_set(priv, F_IEOC, val->intval); > + default: > + return -EINVAL; > + } > +} > + > +static int mt6370_chg_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 mt6370_chg_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 enum power_supply_usb_type mt6370_chg_usb_types[] = { > + POWER_SUPPLY_USB_TYPE_UNKNOWN, > + POWER_SUPPLY_USB_TYPE_SDP, > + POWER_SUPPLY_USB_TYPE_CDP, > + POWER_SUPPLY_USB_TYPE_DCP, > +}; > + > +static const struct power_supply_desc mt6370_chg_psy_desc = { > + .name = "mt6370-charger", > + .type = POWER_SUPPLY_TYPE_USB, > + .properties = mt6370_chg_properties, > + .num_properties = ARRAY_SIZE(mt6370_chg_properties), > + .get_property = mt6370_chg_get_property, > + .set_property = mt6370_chg_set_property, > + .property_is_writeable = mt6370_chg_property_is_writeable, > + .usb_types = mt6370_chg_usb_types, > + .num_usb_types = ARRAY_SIZE(mt6370_chg_usb_types), > +}; > + > +static const struct regulator_ops mt6370_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, > + .set_current_limit = regulator_set_current_limit_regmap, > + .get_current_limit = regulator_get_current_limit_regmap, > +}; > + > +static const u32 mt6370_chg_otg_oc_ma[] = { > + 500000, 700000, 1100000, 1300000, 1800000, 2100000, 2400000, > +}; > + > +static const struct regulator_desc mt6370_chg_otg_rdesc = { > + .of_match = "usb-otg-vbus-regulator", > + .of_parse_cb = mt6370_chg_otg_of_parse_cb, > + .name = "mt6370-usb-otg-vbus", > + .ops = &mt6370_chg_otg_ops, > + .owner = THIS_MODULE, > + .type = REGULATOR_VOLTAGE, > + .min_uV = 4425000, > + .uV_step = 25000, > + .n_voltages = 57, > + .vsel_reg = MT6370_REG_CHG_CTRL5, > + .vsel_mask = MT6370_VOBST_MASK, > + .enable_reg = MT6370_REG_CHG_CTRL1, > + .enable_mask = MT6370_OPA_MODE_MASK, > + .curr_table = mt6370_chg_otg_oc_ma, > + .n_current_limits = ARRAY_SIZE(mt6370_chg_otg_oc_ma), > + .csel_reg = MT6370_REG_CHG_CTRL10, > + .csel_mask = MT6370_OTG_OC_MASK, > +}; > + > +static int mt6370_chg_init_rmap_fields(struct mt6370_priv *priv) > +{ > + int i; > + const struct mt6370_chg_field *fds = mt6370_chg_fields; > + > + for (i = 0; i < F_MAX; i++) { > + priv->rmap_fields[i] = devm_regmap_field_alloc(priv->dev, > + priv->regmap, > + fds[i].field); > + if (IS_ERR(priv->rmap_fields[i])) > + return dev_err_probe(priv->dev, > + PTR_ERR(priv->rmap_fields[i]), > + "Failed to allocate regmapfield[%s]\n", > + fds[i].name); > + } > + > + return 0; > +} > + > +static int mt6370_chg_init_setting(struct mt6370_priv *priv) > +{ > + int ret; > + > + /* Disable usb_chg_en */ > + ret = mt6370_chg_field_set(priv, F_USBCHGEN, 0); > + if (ret) { > + dev_err(priv->dev, "Failed to disable usb_chg_en\n"); > + return ret; > + } > + > + /* ICHG/IEOC Workaround, ICHG can not be set less than 900mA */ > + ret = mt6370_chg_field_set(priv, F_ICHG, 900000); > + if (ret) { > + dev_err(priv->dev, "Failed to set ICHG to 900mA"); > + return ret; > + } > + > + /* Change input current limit selection to using IAICR results */ > + ret = mt6370_chg_field_set(priv, F_IINLMTSEL, 3); > + if (ret) { > + dev_err(priv->dev, "Failed to set IINLMTSEL\n"); > + return ret; > + } > + > + return 0; > +} > + > +#define MT6370_CHG_DT_PROP_DECL(_name, _type, _field) \ > +{ \ > + .name = "mediatek,chg-" #_name, \ > + .type = MT6370_PARSE_TYPE_##_type, \ > + .fd = _field, \ > +} > + > +static int mt6370_chg_init_otg_regulator(struct mt6370_priv *priv) > +{ > + struct regulator_config rcfg = { > + .dev = priv->dev, > + .regmap = priv->regmap, > + .driver_data = priv, > + }; > + > + priv->rdev = devm_regulator_register(priv->dev, &mt6370_chg_otg_rdesc, > + &rcfg); > + > + return PTR_ERR_OR_ZERO(priv->rdev); > +} > + > +static int mt6370_chg_init_psy(struct mt6370_priv *priv) > +{ > + struct power_supply_config cfg = { > + .drv_data = priv, > + .of_node = dev_of_node(priv->dev), > + }; > + > + priv->psy = devm_power_supply_register(priv->dev, &mt6370_chg_psy_desc, > + &cfg); > + > + return PTR_ERR_OR_ZERO(priv->psy); > +} > + > +static void mt6370_chg_destroy_attach_lock(void *data) > +{ > + struct mutex *attach_lock = data; > + > + mutex_destroy(attach_lock); > +} > + > +static void mt6370_chg_destroy_wq(void *data) > +{ > + struct workqueue_struct *wq = data; > + > + flush_workqueue(wq); > + destroy_workqueue(wq); > +} > + > +static void mt6370_chg_cancel_mivr_dwork(void *data) > +{ > + struct delayed_work *mivr_dwork = data; > + > + cancel_delayed_work_sync(mivr_dwork); > +} > + > +static irqreturn_t mt6370_attach_i_handler(int irq, void *data) > +{ > + struct mt6370_priv *priv = data; > + unsigned int otg_en; > + int ret; > + > + /* Check in OTG mode or not */ > + ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en); > + if (ret) { > + dev_err(priv->dev, "Failed to get OTG state\n"); > + return IRQ_NONE; > + } > + > + if (otg_en) > + return IRQ_HANDLED; > + > + mutex_lock(&priv->attach_lock); > + priv->attach = MT6370_ATTACH_STAT_ATTACH_BC12_DONE; > + mutex_unlock(&priv->attach_lock); > + > + if (!queue_work(priv->wq, &priv->bc12_work)) > + dev_err(priv->dev, "bc12 work has already queued\n"); > + > + return IRQ_HANDLED; > +} > + > +static irqreturn_t mt6370_uvp_d_evt_handler(int irq, void *data) > +{ > + struct mt6370_priv *priv = data; > + > + mt6370_chg_pwr_rdy_check(priv); > + > + return IRQ_HANDLED; > +} > + > +static irqreturn_t mt6370_mivr_handler(int irq, void *data) > +{ > + struct mt6370_priv *priv = data; > + > + pm_stay_awake(priv->dev); > + disable_irq_nosync(priv->irq_nums[MT6370_IRQ_MIVR]); > + schedule_delayed_work(&priv->mivr_dwork, msecs_to_jiffies(200)); > + > + return IRQ_HANDLED; > +} > + > +#define MT6370_CHG_IRQ(_name) \ > +{ \ > + .name = #_name, \ > + .handler = mt6370_##_name##_handler, \ > +} > + > +static int mt6370_chg_init_irq(struct mt6370_priv *priv) > +{ > + int i, ret; > + const struct { > + char *name; > + irq_handler_t handler; > + } mt6370_chg_irqs[] = { > + MT6370_CHG_IRQ(attach_i), > + MT6370_CHG_IRQ(uvp_d_evt), > + MT6370_CHG_IRQ(mivr), > + }; > + > + for (i = 0; i < ARRAY_SIZE(mt6370_chg_irqs); i++) { > + ret = platform_get_irq_byname(to_platform_device(priv->dev), > + mt6370_chg_irqs[i].name); > + if (ret < 0) > + return dev_err_probe(priv->dev, ret, > + "Failed to get irq %s\n", > + mt6370_chg_irqs[i].name); > + > + priv->irq_nums[i] = ret; > + ret = devm_request_threaded_irq(priv->dev, ret, NULL, > + mt6370_chg_irqs[i].handler, > + IRQF_TRIGGER_FALLING, > + dev_name(priv->dev), priv); > + if (ret) > + return dev_err_probe(priv->dev, ret, > + "Failed to request irq %s\n", > + mt6370_chg_irqs[i].name); > + } > + > + return 0; > +} > + > +static int mt6370_chg_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct mt6370_priv *priv; > + int ret; > + > + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); > + if (!priv) > + return -ENOMEM; > + > + priv->dev = &pdev->dev; > + > + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); > + if (!priv->regmap) > + return dev_err_probe(dev, -ENODEV, "Failed to get regmap\n"); > + > + ret = mt6370_chg_init_rmap_fields(priv); > + if (ret) > + return dev_err_probe(dev, ret, "Failed to init regmap fields\n"); > + > + platform_set_drvdata(pdev, priv); > + > + priv->iio_adcs = devm_iio_channel_get_all(priv->dev); > + if (IS_ERR(priv->iio_adcs)) > + return dev_err_probe(dev, PTR_ERR(priv->iio_adcs), > + "Failed to get iio adc\n"); > + > + ret = mt6370_chg_init_otg_regulator(priv); > + if (ret) > + return dev_err_probe(dev, ret, "Failed to init OTG regulator\n"); > + > + ret = mt6370_chg_init_psy(priv); > + if (ret) > + return dev_err_probe(dev, ret, "Failed to init psy\n"); > + > + mutex_init(&priv->attach_lock); > + ret = devm_add_action_or_reset(dev, mt6370_chg_destroy_attach_lock, > + &priv->attach_lock); > + if (ret) > + return dev_err_probe(dev, ret, "Failed to init attach lock\n"); > + > + priv->attach = MT6370_ATTACH_STAT_DETACH; > + > + priv->wq = create_singlethread_workqueue(dev_name(priv->dev)); > + if (IS_ERR(priv->wq)) > + return dev_err_probe(dev, PTR_ERR(priv->wq), > + "Failed to create workqueue\n"); > + > + ret = devm_add_action_or_reset(dev, mt6370_chg_destroy_wq, priv->wq); > + if (ret) > + return dev_err_probe(dev, ret, "Failed to init wq\n"); > + > + INIT_WORK(&priv->bc12_work, mt6370_chg_bc12_work_func); > + INIT_DELAYED_WORK(&priv->mivr_dwork, mt6370_chg_mivr_dwork_func); > + ret = devm_add_action_or_reset(dev, mt6370_chg_cancel_mivr_dwork, > + &priv->mivr_dwork); > + if (ret) > + return dev_err_probe(dev, ret, "Failed to init mivr dwork\n"); > + > + ret = mt6370_chg_init_setting(priv); > + if (ret) > + return dev_err_probe(dev, ret, > + "Failed to init mt6370 charger setting\n"); > + > + ret = mt6370_chg_init_irq(priv); > + if (ret) > + return ret; > + > + mt6370_chg_pwr_rdy_check(priv); > + > + return 0; > +} > + > +static const struct of_device_id mt6370_chg_of_match[] = { > + { .compatible = "mediatek,mt6370-charger", }, > + {} > +}; > +MODULE_DEVICE_TABLE(of, mt6370_chg_of_match); > + > +static struct platform_driver mt6370_chg_driver = { > + .probe = mt6370_chg_probe, > + .driver = { > + .name = "mt6370-charger", > + .of_match_table = mt6370_chg_of_match, > + }, > +}; > +module_platform_driver(mt6370_chg_driver); > + > +MODULE_AUTHOR("ChiaEn Wu <chiaen_wu@richtek.com>"); > +MODULE_DESCRIPTION("MediaTek MT6370 Charger Driver"); > +MODULE_LICENSE("GPL v2"); > -- > 2.7.4 >
Hi ChiaEn, pe 5. elok. 2022 klo 10.09 ChiaEn Wu (peterwu.pub@gmail.com) kirjoitti: > > From: ChiaEn Wu <chiaen_wu@richtek.com> > > MediaTek MT6370 is a SubPMIC consisting of a single cell battery charger > with ADC monitoring, RGB LEDs, dual channel flashlight, WLED backlight > driver, display bias voltage supply, one general purpose LDO, and the > USB Type-C & PD controller complies with the latest USB Type-C and PD > standards. > > Add a support for the MediaTek MT6370 Charger driver. The charger module > of MT6370 supports High-Accuracy Voltage/Current Regulation, > Average Input Current Regulation, Battery Temperature Sensing, > Over-Temperature Protection, DPDM Detection for BC1.2. > > Signed-off-by: ChiaEn Wu <chiaen_wu@richtek.com> > --- > > + > +#define MT6370_CHG_LINEAR_RANGE(_rfd, _min, _min_sel, _max_sel, _step) \ > +[_rfd] = { \ > + .min = _min, \ > + .min_sel = _min_sel, \ > + .max_sel = _max_sel, \ > + .step = _step, \ > +} Just a minor thing but I think this macro could be useful also for other drivers. Do you think you could rename it to LINEAR_RANGE_IDX() (or some such) and move it to the linear_range.h? That would allow also other drivers to use it instead of reinventing the wheel :) Best Regards -- Matti Vaittinen --- Matti Vaittinen Linux kernel developer at ROHM Semiconductors Oulu Finland ~~ When things go utterly wrong vim users can always type :help! ~~
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 1aa8323..591deb8 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -619,6 +619,20 @@ config CHARGER_MT6360 Average Input Current Regulation, Battery Temperature Sensing, Over-Temperature Protection, DPDM Detection for BC1.2. +config CHARGER_MT6370 + tristate "MediaTek MT6370 Charger Driver" + depends on MFD_MT6370 + depends on REGULATOR + select LINEAR_RANGES + help + Say Y here to enable MT6370 Charger Part. + The device supports High-Accuracy Voltage/Current Regulation, + Average Input Current Regulation, Battery Temperature Sensing, + Over-Temperature Protection, DPDM Detection for BC1.2. + + This driver can also be built as a module. If so, the module + will be called "mt6370-charger". + 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 7f02f36..8c95276 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -82,6 +82,7 @@ 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-$(CONFIG_CHARGER_MT6370) += mt6370-charger.o obj-$(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/mt6370-charger.c b/drivers/power/supply/mt6370-charger.c new file mode 100644 index 0000000..42fddc3 --- /dev/null +++ b/drivers/power/supply/mt6370-charger.c @@ -0,0 +1,965 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2022 Richtek Technology Corp. + * + * Author: ChiaEn Wu <chiaen_wu@richtek.com> + */ + +#include <linux/bitfield.h> +#include <linux/bits.h> +#include <linux/gpio/consumer.h> +#include <linux/iio/consumer.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/linear_range.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/power_supply.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> +#include <linux/workqueue.h> + +#define MT6370_REG_CHG_CTRL1 0x111 +#define MT6370_REG_CHG_CTRL2 0x112 +#define MT6370_REG_CHG_CTRL3 0x113 +#define MT6370_REG_CHG_CTRL4 0x114 +#define MT6370_REG_CHG_CTRL5 0x115 +#define MT6370_REG_CHG_CTRL6 0x116 +#define MT6370_REG_CHG_CTRL7 0x117 +#define MT6370_REG_CHG_CTRL8 0x118 +#define MT6370_REG_CHG_CTRL9 0x119 +#define MT6370_REG_CHG_CTRL10 0x11A +#define MT6370_REG_DEVICE_TYPE 0x122 +#define MT6370_REG_USB_STATUS1 0x127 +#define MT6370_REG_CHG_STAT 0x14A +#define MT6370_REG_FLED_EN 0x17E +#define MT6370_REG_CHG_STAT1 0X1D0 +#define MT6370_REG_OVPCTRL_STAT 0x1D8 + +#define MT6370_VOBST_MASK GENMASK(7, 2) +#define MT6370_OTG_PIN_EN_MASK BIT(1) +#define MT6370_OPA_MODE_MASK BIT(0) +#define MT6370_OTG_OC_MASK GENMASK(2, 0) + +#define MT6370_MIVR_IBUS_TH_100_mA 100000 +#define MT6370_ADC_CHAN_IBUS 5 +#define MT6370_ADC_CHAN_MAX 9 + +enum mt6370_chg_reg_field { + /* MT6370_REG_CHG_CTRL2 */ + F_IINLMTSEL, F_CFO_EN, F_CHG_EN, + /* MT6370_REG_CHG_CTRL3 */ + F_IAICR, F_AICR_EN, F_ILIM_EN, + /* MT6370_REG_CHG_CTRL4 */ + F_VOREG, + /* MT6370_REG_CHG_CTRL6 */ + F_VMIVR, + /* MT6370_REG_CHG_CTRL7 */ + F_ICHG, + /* MT6370_REG_CHG_CTRL8 */ + F_IPREC, + /* MT6370_REG_CHG_CTRL9 */ + F_IEOC, + /* MT6370_REG_DEVICE_TYPE */ + F_USBCHGEN, + /* MT6370_REG_USB_STATUS1 */ + F_USB_STAT, F_CHGDET, + /* MT6370_REG_CHG_STAT */ + F_CHG_STAT, F_BOOST_STAT, F_VBAT_LVL, + /* MT6370_REG_FLED_EN */ + F_FL_STROBE, + /* MT6370_REG_CHG_STAT1 */ + F_CHG_MIVR_STAT, + /* MT6370_REG_OVPCTRL_STAT */ + F_UVP_D_STAT, + F_MAX +}; + +enum mt6370_irq { + MT6370_IRQ_ATTACH_I = 0, + MT6370_IRQ_UVP_D_EVT, + MT6370_IRQ_MIVR, + MT6370_IRQ_MAX +}; + +struct mt6370_priv { + struct device *dev; + struct iio_channel *iio_adcs; + struct mutex attach_lock; + struct power_supply *psy; + struct regmap *regmap; + struct regmap_field *rmap_fields[F_MAX]; + struct regulator_dev *rdev; + struct workqueue_struct *wq; + struct work_struct bc12_work; + struct delayed_work mivr_dwork; + unsigned int irq_nums[MT6370_IRQ_MAX]; + int attach; + int psy_usb_type; + bool pwr_rdy; +}; + +enum mt6370_usb_status { + MT6370_USB_STAT_NO_VBUS = 0, + MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING, + MT6370_USB_STAT_SDP, + MT6370_USB_STAT_SDP_NSTD, + MT6370_USB_STAT_DCP, + MT6370_USB_STAT_CDP, + MT6370_USB_STAT_MAX +}; + +struct mt6370_chg_field { + const char *name; + const struct linear_range *range; + struct reg_field field; +}; + +enum { + MT6370_RANGE_F_IAICR = 0, + MT6370_RANGE_F_VOREG, + MT6370_RANGE_F_VMIVR, + MT6370_RANGE_F_ICHG, + MT6370_RANGE_F_IPREC, + MT6370_RANGE_F_IEOC, + MT6370_RANGE_F_MAX +}; + +#define MT6370_CHG_LINEAR_RANGE(_rfd, _min, _min_sel, _max_sel, _step) \ +[_rfd] = { \ + .min = _min, \ + .min_sel = _min_sel, \ + .max_sel = _max_sel, \ + .step = _step, \ +} + +static const struct linear_range mt6370_chg_ranges[MT6370_RANGE_F_MAX] = { + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_IAICR, 100000, 0x0, 0x3F, 50000), + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_VOREG, 3900000, 0x0, 0x51, 10000), + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_VMIVR, 3900000, 0x0, 0x5F, 100000), + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_ICHG, 900000, 0x08, 0x31, 100000), + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_IPREC, 100000, 0x0, 0x0F, 50000), + MT6370_CHG_LINEAR_RANGE(MT6370_RANGE_F_IEOC, 100000, 0x0, 0x0F, 50000), +}; + +#define MT6370_CHG_FIELD(_fd, _reg, _lsb, _msb) \ +[_fd] = { \ + .name = #_fd, \ + .range = NULL, \ + .field = REG_FIELD(_reg, _lsb, _msb), \ +} + +#define MT6370_CHG_FIELD_RANGE(_fd, _reg, _lsb, _msb) \ +[_fd] = { \ + .name = #_fd, \ + .range = &mt6370_chg_ranges[MT6370_RANGE_##_fd], \ + .field = REG_FIELD(_reg, _lsb, _msb), \ +} + +static const struct mt6370_chg_field mt6370_chg_fields[F_MAX] = { + MT6370_CHG_FIELD(F_IINLMTSEL, MT6370_REG_CHG_CTRL2, 2, 3), + MT6370_CHG_FIELD(F_CFO_EN, MT6370_REG_CHG_CTRL2, 1, 1), + MT6370_CHG_FIELD(F_CHG_EN, MT6370_REG_CHG_CTRL2, 0, 0), + MT6370_CHG_FIELD_RANGE(F_IAICR, MT6370_REG_CHG_CTRL3, 2, 7), + MT6370_CHG_FIELD(F_AICR_EN, MT6370_REG_CHG_CTRL3, 1, 1), + MT6370_CHG_FIELD(F_ILIM_EN, MT6370_REG_CHG_CTRL3, 0, 0), + MT6370_CHG_FIELD_RANGE(F_VOREG, MT6370_REG_CHG_CTRL4, 1, 7), + MT6370_CHG_FIELD_RANGE(F_VMIVR, MT6370_REG_CHG_CTRL6, 1, 7), + MT6370_CHG_FIELD_RANGE(F_ICHG, MT6370_REG_CHG_CTRL7, 2, 7), + MT6370_CHG_FIELD_RANGE(F_IPREC, MT6370_REG_CHG_CTRL8, 0, 3), + MT6370_CHG_FIELD_RANGE(F_IEOC, MT6370_REG_CHG_CTRL9, 4, 7), + MT6370_CHG_FIELD(F_USBCHGEN, MT6370_REG_DEVICE_TYPE, 7, 7), + MT6370_CHG_FIELD(F_USB_STAT, MT6370_REG_USB_STATUS1, 4, 6), + MT6370_CHG_FIELD(F_CHGDET, MT6370_REG_USB_STATUS1, 3, 3), + MT6370_CHG_FIELD(F_CHG_STAT, MT6370_REG_CHG_STAT, 6, 7), + MT6370_CHG_FIELD(F_BOOST_STAT, MT6370_REG_CHG_STAT, 3, 3), + MT6370_CHG_FIELD(F_VBAT_LVL, MT6370_REG_CHG_STAT, 5, 5), + MT6370_CHG_FIELD(F_FL_STROBE, MT6370_REG_FLED_EN, 2, 2), + MT6370_CHG_FIELD(F_CHG_MIVR_STAT, MT6370_REG_CHG_STAT1, 6, 6), + MT6370_CHG_FIELD(F_UVP_D_STAT, MT6370_REG_OVPCTRL_STAT, 4, 4), +}; + +static inline int mt6370_chg_field_get(struct mt6370_priv *priv, + enum mt6370_chg_reg_field fd, + unsigned int *val) +{ + int ret; + unsigned int reg_val; + + ret = regmap_field_read(priv->rmap_fields[fd], ®_val); + if (ret) + return ret; + + if (mt6370_chg_fields[fd].range) + return linear_range_get_value(mt6370_chg_fields[fd].range, + reg_val, val); + + *val = reg_val; + return 0; +} + +static inline int mt6370_chg_field_set(struct mt6370_priv *priv, + enum mt6370_chg_reg_field fd, + unsigned int val) +{ + int ret; + bool f; + const struct linear_range *r; + + if (mt6370_chg_fields[fd].range) { + r = mt6370_chg_fields[fd].range; + + if (fd == F_VMIVR) { + ret = linear_range_get_selector_high(r, val, &val, &f); + if (ret) + val = r->max_sel; + } else { + linear_range_get_selector_within(r, val, &val); + } + } + + return regmap_field_write(priv->rmap_fields[fd], val); +} + +enum { + MT6370_CHG_STAT_READY = 0, + MT6370_CHG_STAT_CHARGE_IN_PROGRESS, + MT6370_CHG_STAT_DONE, + MT6370_CHG_STAT_FAULT, + MT6370_CHG_STAT_MAX +}; + +enum { + MT6370_ATTACH_STAT_DETACH = 0, + MT6370_ATTACH_STAT_ATTACH_BC12_NOT_DONE, + MT6370_ATTACH_STAT_ATTACH_BC12_DONE, + MT6370_ATTACH_STAT_ATTACH_MAX +}; + +static int mt6370_chg_otg_of_parse_cb(struct device_node *of, + const struct regulator_desc *rdesc, + struct regulator_config *rcfg) +{ + struct mt6370_priv *priv = rcfg->driver_data; + + rcfg->ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(of), + "enable", 0, GPIOD_OUT_LOW | + GPIOD_FLAGS_BIT_NONEXCLUSIVE, + rdesc->name); + if (IS_ERR(rcfg->ena_gpiod)) { + rcfg->ena_gpiod = NULL; + return 0; + } + + return regmap_update_bits(priv->regmap, MT6370_REG_CHG_CTRL1, + MT6370_OTG_PIN_EN_MASK, + MT6370_OTG_PIN_EN_MASK); +} + +static void mt6370_chg_bc12_work_func(struct work_struct *work) +{ + struct mt6370_priv *priv = container_of(work, struct mt6370_priv, + bc12_work); + int ret; + bool rpt_psy = false; + unsigned int attach, usb_stat; + + mutex_lock(&priv->attach_lock); + attach = priv->attach; + + switch (attach) { + case MT6370_ATTACH_STAT_DETACH: + usb_stat = 0; + break; + case MT6370_ATTACH_STAT_ATTACH_BC12_DONE: + ret = mt6370_chg_field_get(priv, F_USB_STAT, &usb_stat); + if (ret) { + dev_err(priv->dev, "Failed to get USB status\n"); + goto bc12_work_func_out; + } + break; + case MT6370_ATTACH_STAT_ATTACH_BC12_NOT_DONE: + ret = mt6370_chg_field_set(priv, F_USBCHGEN, attach); + if (ret) + dev_err(priv->dev, "Failed to enable USB CHG EN\n"); + goto bc12_work_func_out; + default: + dev_err(priv->dev, "Invalid attach state\n"); + goto bc12_work_func_out; + } + + rpt_psy = true; + + switch (usb_stat) { + case MT6370_USB_STAT_SDP: + case MT6370_USB_STAT_SDP_NSTD: + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP; + break; + case MT6370_USB_STAT_DCP: + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP; + break; + case MT6370_USB_STAT_CDP: + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP; + break; + case MT6370_USB_STAT_NO_VBUS: + case MT6370_USB_STAT_VBUS_FLOW_IS_UNDER_GOING: + default: + priv->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN; + break; + } + +bc12_work_func_out: + mutex_unlock(&priv->attach_lock); + + if (rpt_psy) + power_supply_changed(priv->psy); +} + +static int mt6370_chg_toggle_cfo(struct mt6370_priv *priv) +{ + int ret; + unsigned int fl_strobe; + + /* check if flash led in strobe mode */ + ret = mt6370_chg_field_get(priv, F_FL_STROBE, &fl_strobe); + if (ret) { + dev_err(priv->dev, "Failed to get FL_STROBE_EN\n"); + return ret; + } + + if (fl_strobe) { + dev_err(priv->dev, "Flash led is still in strobe mode\n"); + return ret; + } + + /* cfo off */ + ret = mt6370_chg_field_set(priv, F_CFO_EN, 0); + if (ret) { + dev_err(priv->dev, "Failed to disable CFO_EN\n"); + return ret; + } + + /* cfo on */ + ret = mt6370_chg_field_set(priv, F_CFO_EN, 1); + if (ret) + dev_err(priv->dev, "Failed to enable CFO_EN\n"); + + return ret; +} + +static int mt6370_chg_read_adc_chan(struct mt6370_priv *priv, unsigned int chan, + int *val) +{ + int ret; + + if (chan >= MT6370_ADC_CHAN_MAX) + return -EINVAL; + + ret = iio_read_channel_processed(&priv->iio_adcs[chan], val); + if (ret) + dev_err(priv->dev, "Failed to read ADC\n"); + + return ret; +} + +static void mt6370_chg_mivr_dwork_func(struct work_struct *work) +{ + struct mt6370_priv *priv = container_of(work, struct mt6370_priv, + mivr_dwork.work); + int ret; + unsigned int mivr_stat, ibus; + + ret = mt6370_chg_field_get(priv, F_CHG_MIVR_STAT, &mivr_stat); + if (ret) { + dev_err(priv->dev, "Failed to get mivr state\n"); + goto mivr_handler_out; + } + + if (!mivr_stat) + goto mivr_handler_out; + + ret = mt6370_chg_read_adc_chan(priv, MT6370_ADC_CHAN_IBUS, &ibus); + if (ret) { + dev_err(priv->dev, "Failed to get ibus\n"); + goto mivr_handler_out; + } + + if (ibus < MT6370_MIVR_IBUS_TH_100_mA) { + ret = mt6370_chg_toggle_cfo(priv); + if (ret) + dev_err(priv->dev, "Failed to toggle cfo\n"); + } + +mivr_handler_out: + enable_irq(priv->irq_nums[MT6370_IRQ_MIVR]); + pm_relax(priv->dev); +} + +static void mt6370_chg_pwr_rdy_check(struct mt6370_priv *priv) +{ + int ret; + unsigned int pwr_rdy, otg_en; + union power_supply_propval val; + + /* Check in OTG mode or not */ + ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en); + if (ret) { + dev_err(priv->dev, "Failed to get OTG state\n"); + return; + } + + if (otg_en) + return; + + ret = mt6370_chg_field_get(priv, F_UVP_D_STAT, &pwr_rdy); + if (ret) { + dev_err(priv->dev, "Failed to get pwr_rdy state reg\n"); + return; + } + + val.intval = !pwr_rdy; + + ret = power_supply_set_property(priv->psy, POWER_SUPPLY_PROP_ONLINE, + &val); + if (ret) + dev_err(priv->dev, "Failed to start attach/detach flow\n"); +} + +static int mt6370_chg_get_online(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + mutex_lock(&priv->attach_lock); + val->intval = !!priv->attach; + mutex_unlock(&priv->attach_lock); + + return 0; +} + +static int mt6370_chg_get_status(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + int ret; + unsigned int chg_stat; + union power_supply_propval online; + + ret = power_supply_get_property(priv->psy, POWER_SUPPLY_PROP_ONLINE, + &online); + if (ret) { + dev_err(priv->dev, "Failed to get online status\n"); + return ret; + } + + if (!online.intval) { + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + return 0; + } + + ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat); + if (ret) + return ret; + + switch (chg_stat) { + case MT6370_CHG_STAT_READY: + case MT6370_CHG_STAT_FAULT: + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + return ret; + case MT6370_CHG_STAT_CHARGE_IN_PROGRESS: + val->intval = POWER_SUPPLY_STATUS_CHARGING; + return ret; + case MT6370_CHG_STAT_DONE: + val->intval = POWER_SUPPLY_STATUS_FULL; + return ret; + default: + val->intval = POWER_SUPPLY_STATUS_UNKNOWN; + return ret; + } +} + +static int mt6370_chg_get_charge_type(struct mt6370_priv *priv, + union power_supply_propval *val) +{ + int type, ret; + unsigned int chg_stat, vbat_lvl; + + ret = mt6370_chg_field_get(priv, F_CHG_STAT, &chg_stat); + if (ret) + return ret; + + ret = mt6370_chg_field_get(priv, F_VBAT_LVL, &vbat_lvl); + if (ret) + return ret; + + switch (chg_stat) { + case MT6370_CHG_STAT_CHARGE_IN_PROGRESS: + if (vbat_lvl) + type = POWER_SUPPLY_CHARGE_TYPE_FAST; + else + type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + break; + case MT6370_CHG_STAT_READY: + case MT6370_CHG_STAT_DONE: + case MT6370_CHG_STAT_FAULT: + default: + type = POWER_SUPPLY_CHARGE_TYPE_NONE; + break; + } + + val->intval = type; + + return 0; +} + +static int mt6370_chg_set_online(struct mt6370_priv *priv, + const union power_supply_propval *val) +{ + bool pwr_rdy = !!val->intval; + + mutex_lock(&priv->attach_lock); + if (pwr_rdy == !!priv->attach) { + dev_err(priv->dev, "pwr_rdy is same(%d)\n", pwr_rdy); + mutex_unlock(&priv->attach_lock); + return 0; + } + + priv->attach = pwr_rdy; + mutex_unlock(&priv->attach_lock); + + if (!queue_work(priv->wq, &priv->bc12_work)) + dev_err(priv->dev, "bc12 work has already queued\n"); + + return 0; +} + +static int mt6370_chg_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct mt6370_priv *priv = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + return mt6370_chg_get_online(priv, val); + case POWER_SUPPLY_PROP_STATUS: + return mt6370_chg_get_status(priv, val); + case POWER_SUPPLY_PROP_CHARGE_TYPE: + return mt6370_chg_get_charge_type(priv, val); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + return mt6370_chg_field_get(priv, F_ICHG, &val->intval); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + val->intval = linear_range_get_max_value(&mt6370_chg_ranges[MT6370_RANGE_F_ICHG]); + return 0; + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + return mt6370_chg_field_get(priv, F_VOREG, &val->intval); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + val->intval = linear_range_get_max_value(&mt6370_chg_ranges[MT6370_RANGE_F_VOREG]); + return 0; + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return mt6370_chg_field_get(priv, F_IAICR, &val->intval); + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + return mt6370_chg_field_get(priv, F_VMIVR, &val->intval); + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + return mt6370_chg_field_get(priv, F_IPREC, &val->intval); + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return mt6370_chg_field_get(priv, F_IEOC, &val->intval); + case POWER_SUPPLY_PROP_USB_TYPE: + val->intval = priv->psy_usb_type; + return 0; + default: + return -EINVAL; + } +} + +static int mt6370_chg_set_property(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct mt6370_priv *priv = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + return mt6370_chg_set_online(priv, val); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + return mt6370_chg_field_set(priv, F_ICHG, val->intval); + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + return mt6370_chg_field_set(priv, F_VOREG, val->intval); + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return mt6370_chg_field_set(priv, F_IAICR, val->intval); + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + return mt6370_chg_field_set(priv, F_VMIVR, val->intval); + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + return mt6370_chg_field_set(priv, F_IPREC, val->intval); + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + return mt6370_chg_field_set(priv, F_IEOC, val->intval); + default: + return -EINVAL; + } +} + +static int mt6370_chg_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 mt6370_chg_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 enum power_supply_usb_type mt6370_chg_usb_types[] = { + POWER_SUPPLY_USB_TYPE_UNKNOWN, + POWER_SUPPLY_USB_TYPE_SDP, + POWER_SUPPLY_USB_TYPE_CDP, + POWER_SUPPLY_USB_TYPE_DCP, +}; + +static const struct power_supply_desc mt6370_chg_psy_desc = { + .name = "mt6370-charger", + .type = POWER_SUPPLY_TYPE_USB, + .properties = mt6370_chg_properties, + .num_properties = ARRAY_SIZE(mt6370_chg_properties), + .get_property = mt6370_chg_get_property, + .set_property = mt6370_chg_set_property, + .property_is_writeable = mt6370_chg_property_is_writeable, + .usb_types = mt6370_chg_usb_types, + .num_usb_types = ARRAY_SIZE(mt6370_chg_usb_types), +}; + +static const struct regulator_ops mt6370_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, + .set_current_limit = regulator_set_current_limit_regmap, + .get_current_limit = regulator_get_current_limit_regmap, +}; + +static const u32 mt6370_chg_otg_oc_ma[] = { + 500000, 700000, 1100000, 1300000, 1800000, 2100000, 2400000, +}; + +static const struct regulator_desc mt6370_chg_otg_rdesc = { + .of_match = "usb-otg-vbus-regulator", + .of_parse_cb = mt6370_chg_otg_of_parse_cb, + .name = "mt6370-usb-otg-vbus", + .ops = &mt6370_chg_otg_ops, + .owner = THIS_MODULE, + .type = REGULATOR_VOLTAGE, + .min_uV = 4425000, + .uV_step = 25000, + .n_voltages = 57, + .vsel_reg = MT6370_REG_CHG_CTRL5, + .vsel_mask = MT6370_VOBST_MASK, + .enable_reg = MT6370_REG_CHG_CTRL1, + .enable_mask = MT6370_OPA_MODE_MASK, + .curr_table = mt6370_chg_otg_oc_ma, + .n_current_limits = ARRAY_SIZE(mt6370_chg_otg_oc_ma), + .csel_reg = MT6370_REG_CHG_CTRL10, + .csel_mask = MT6370_OTG_OC_MASK, +}; + +static int mt6370_chg_init_rmap_fields(struct mt6370_priv *priv) +{ + int i; + const struct mt6370_chg_field *fds = mt6370_chg_fields; + + for (i = 0; i < F_MAX; i++) { + priv->rmap_fields[i] = devm_regmap_field_alloc(priv->dev, + priv->regmap, + fds[i].field); + if (IS_ERR(priv->rmap_fields[i])) + return dev_err_probe(priv->dev, + PTR_ERR(priv->rmap_fields[i]), + "Failed to allocate regmapfield[%s]\n", + fds[i].name); + } + + return 0; +} + +static int mt6370_chg_init_setting(struct mt6370_priv *priv) +{ + int ret; + + /* Disable usb_chg_en */ + ret = mt6370_chg_field_set(priv, F_USBCHGEN, 0); + if (ret) { + dev_err(priv->dev, "Failed to disable usb_chg_en\n"); + return ret; + } + + /* ICHG/IEOC Workaround, ICHG can not be set less than 900mA */ + ret = mt6370_chg_field_set(priv, F_ICHG, 900000); + if (ret) { + dev_err(priv->dev, "Failed to set ICHG to 900mA"); + return ret; + } + + /* Change input current limit selection to using IAICR results */ + ret = mt6370_chg_field_set(priv, F_IINLMTSEL, 3); + if (ret) { + dev_err(priv->dev, "Failed to set IINLMTSEL\n"); + return ret; + } + + return 0; +} + +#define MT6370_CHG_DT_PROP_DECL(_name, _type, _field) \ +{ \ + .name = "mediatek,chg-" #_name, \ + .type = MT6370_PARSE_TYPE_##_type, \ + .fd = _field, \ +} + +static int mt6370_chg_init_otg_regulator(struct mt6370_priv *priv) +{ + struct regulator_config rcfg = { + .dev = priv->dev, + .regmap = priv->regmap, + .driver_data = priv, + }; + + priv->rdev = devm_regulator_register(priv->dev, &mt6370_chg_otg_rdesc, + &rcfg); + + return PTR_ERR_OR_ZERO(priv->rdev); +} + +static int mt6370_chg_init_psy(struct mt6370_priv *priv) +{ + struct power_supply_config cfg = { + .drv_data = priv, + .of_node = dev_of_node(priv->dev), + }; + + priv->psy = devm_power_supply_register(priv->dev, &mt6370_chg_psy_desc, + &cfg); + + return PTR_ERR_OR_ZERO(priv->psy); +} + +static void mt6370_chg_destroy_attach_lock(void *data) +{ + struct mutex *attach_lock = data; + + mutex_destroy(attach_lock); +} + +static void mt6370_chg_destroy_wq(void *data) +{ + struct workqueue_struct *wq = data; + + flush_workqueue(wq); + destroy_workqueue(wq); +} + +static void mt6370_chg_cancel_mivr_dwork(void *data) +{ + struct delayed_work *mivr_dwork = data; + + cancel_delayed_work_sync(mivr_dwork); +} + +static irqreturn_t mt6370_attach_i_handler(int irq, void *data) +{ + struct mt6370_priv *priv = data; + unsigned int otg_en; + int ret; + + /* Check in OTG mode or not */ + ret = mt6370_chg_field_get(priv, F_BOOST_STAT, &otg_en); + if (ret) { + dev_err(priv->dev, "Failed to get OTG state\n"); + return IRQ_NONE; + } + + if (otg_en) + return IRQ_HANDLED; + + mutex_lock(&priv->attach_lock); + priv->attach = MT6370_ATTACH_STAT_ATTACH_BC12_DONE; + mutex_unlock(&priv->attach_lock); + + if (!queue_work(priv->wq, &priv->bc12_work)) + dev_err(priv->dev, "bc12 work has already queued\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t mt6370_uvp_d_evt_handler(int irq, void *data) +{ + struct mt6370_priv *priv = data; + + mt6370_chg_pwr_rdy_check(priv); + + return IRQ_HANDLED; +} + +static irqreturn_t mt6370_mivr_handler(int irq, void *data) +{ + struct mt6370_priv *priv = data; + + pm_stay_awake(priv->dev); + disable_irq_nosync(priv->irq_nums[MT6370_IRQ_MIVR]); + schedule_delayed_work(&priv->mivr_dwork, msecs_to_jiffies(200)); + + return IRQ_HANDLED; +} + +#define MT6370_CHG_IRQ(_name) \ +{ \ + .name = #_name, \ + .handler = mt6370_##_name##_handler, \ +} + +static int mt6370_chg_init_irq(struct mt6370_priv *priv) +{ + int i, ret; + const struct { + char *name; + irq_handler_t handler; + } mt6370_chg_irqs[] = { + MT6370_CHG_IRQ(attach_i), + MT6370_CHG_IRQ(uvp_d_evt), + MT6370_CHG_IRQ(mivr), + }; + + for (i = 0; i < ARRAY_SIZE(mt6370_chg_irqs); i++) { + ret = platform_get_irq_byname(to_platform_device(priv->dev), + mt6370_chg_irqs[i].name); + if (ret < 0) + return dev_err_probe(priv->dev, ret, + "Failed to get irq %s\n", + mt6370_chg_irqs[i].name); + + priv->irq_nums[i] = ret; + ret = devm_request_threaded_irq(priv->dev, ret, NULL, + mt6370_chg_irqs[i].handler, + IRQF_TRIGGER_FALLING, + dev_name(priv->dev), priv); + if (ret) + return dev_err_probe(priv->dev, ret, + "Failed to request irq %s\n", + mt6370_chg_irqs[i].name); + } + + return 0; +} + +static int mt6370_chg_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mt6370_priv *priv; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = &pdev->dev; + + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->regmap) + return dev_err_probe(dev, -ENODEV, "Failed to get regmap\n"); + + ret = mt6370_chg_init_rmap_fields(priv); + if (ret) + return dev_err_probe(dev, ret, "Failed to init regmap fields\n"); + + platform_set_drvdata(pdev, priv); + + priv->iio_adcs = devm_iio_channel_get_all(priv->dev); + if (IS_ERR(priv->iio_adcs)) + return dev_err_probe(dev, PTR_ERR(priv->iio_adcs), + "Failed to get iio adc\n"); + + ret = mt6370_chg_init_otg_regulator(priv); + if (ret) + return dev_err_probe(dev, ret, "Failed to init OTG regulator\n"); + + ret = mt6370_chg_init_psy(priv); + if (ret) + return dev_err_probe(dev, ret, "Failed to init psy\n"); + + mutex_init(&priv->attach_lock); + ret = devm_add_action_or_reset(dev, mt6370_chg_destroy_attach_lock, + &priv->attach_lock); + if (ret) + return dev_err_probe(dev, ret, "Failed to init attach lock\n"); + + priv->attach = MT6370_ATTACH_STAT_DETACH; + + priv->wq = create_singlethread_workqueue(dev_name(priv->dev)); + if (IS_ERR(priv->wq)) + return dev_err_probe(dev, PTR_ERR(priv->wq), + "Failed to create workqueue\n"); + + ret = devm_add_action_or_reset(dev, mt6370_chg_destroy_wq, priv->wq); + if (ret) + return dev_err_probe(dev, ret, "Failed to init wq\n"); + + INIT_WORK(&priv->bc12_work, mt6370_chg_bc12_work_func); + INIT_DELAYED_WORK(&priv->mivr_dwork, mt6370_chg_mivr_dwork_func); + ret = devm_add_action_or_reset(dev, mt6370_chg_cancel_mivr_dwork, + &priv->mivr_dwork); + if (ret) + return dev_err_probe(dev, ret, "Failed to init mivr dwork\n"); + + ret = mt6370_chg_init_setting(priv); + if (ret) + return dev_err_probe(dev, ret, + "Failed to init mt6370 charger setting\n"); + + ret = mt6370_chg_init_irq(priv); + if (ret) + return ret; + + mt6370_chg_pwr_rdy_check(priv); + + return 0; +} + +static const struct of_device_id mt6370_chg_of_match[] = { + { .compatible = "mediatek,mt6370-charger", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6370_chg_of_match); + +static struct platform_driver mt6370_chg_driver = { + .probe = mt6370_chg_probe, + .driver = { + .name = "mt6370-charger", + .of_match_table = mt6370_chg_of_match, + }, +}; +module_platform_driver(mt6370_chg_driver); + +MODULE_AUTHOR("ChiaEn Wu <chiaen_wu@richtek.com>"); +MODULE_DESCRIPTION("MediaTek MT6370 Charger Driver"); +MODULE_LICENSE("GPL v2");