mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
961 lines
25 KiB
961 lines
25 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* Copyright (C) 2022 Richtek Technology Corp. |
|
* |
|
* Author: ChiaEn Wu <[email protected]> |
|
*/ |
|
|
|
#include <linux/bitfield.h> |
|
#include <linux/bits.h> |
|
#include <linux/devm-helpers.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 |
|
}; |
|
|
|
static const struct linear_range mt6370_chg_ranges[MT6370_RANGE_F_MAX] = { |
|
LINEAR_RANGE_IDX(MT6370_RANGE_F_IAICR, 100000, 0x0, 0x3F, 50000), |
|
LINEAR_RANGE_IDX(MT6370_RANGE_F_VOREG, 3900000, 0x0, 0x51, 10000), |
|
LINEAR_RANGE_IDX(MT6370_RANGE_F_VMIVR, 3900000, 0x0, 0x5F, 100000), |
|
LINEAR_RANGE_IDX(MT6370_RANGE_F_ICHG, 900000, 0x08, 0x31, 100000), |
|
LINEAR_RANGE_IDX(MT6370_RANGE_F_IPREC, 100000, 0x0, 0x0F, 50000), |
|
LINEAR_RANGE_IDX(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_WAIT_FOR_BC12, |
|
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_WAIT_FOR_BC12: |
|
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; |
|
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; |
|
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 opposite_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, &opposite_pwr_rdy); |
|
if (ret) { |
|
dev_err(priv->dev, "Failed to get opposite power ready state\n"); |
|
return; |
|
} |
|
|
|
val.intval = opposite_pwr_rdy ? |
|
MT6370_ATTACH_STAT_DETACH : |
|
MT6370_ATTACH_STAT_ATTACH_WAIT_FOR_BC12; |
|
|
|
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; |
|
} |
|
|
|
/* Disable input current limit */ |
|
ret = mt6370_chg_field_set(priv, F_ILIM_EN, 0); |
|
if (ret) { |
|
dev_err(priv->dev, "Failed to disable input current limit\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, 2); |
|
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 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 (!priv->wq) |
|
return dev_err_probe(dev, -ENOMEM, |
|
"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"); |
|
|
|
ret = devm_work_autocancel(dev, &priv->bc12_work, mt6370_chg_bc12_work_func); |
|
if (ret) |
|
return dev_err_probe(dev, ret, "Failed to init bc12 work\n"); |
|
|
|
ret = devm_delayed_work_autocancel(dev, &priv->mivr_dwork, mt6370_chg_mivr_dwork_func); |
|
if (ret) |
|
return dev_err_probe(dev, ret, "Failed to init mivr delayed work\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 <[email protected]>"); |
|
MODULE_DESCRIPTION("MediaTek MT6370 Charger Driver"); |
|
MODULE_LICENSE("GPL v2");
|
|
|