// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2021 MediaTek Inc.
*/
#include <linux/devm-helpers.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/property.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#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
enum {
MT6360_RANGE_VMIVR,
MT6360_RANGE_ICHG,
MT6360_RANGE_VOREG,
MT6360_RANGE_AICR,
MT6360_RANGE_IPREC,
MT6360_RANGE_IEOC,
MT6360_RANGE_MAX,
};
#define MT6360_LINEAR_RANGE(idx, _min, _min_sel, _max_sel, _step) \
[idx] = REGULATOR_LINEAR_RANGE(_min, _min_sel, _max_sel, _step)
static const struct linear_range mt6360_chg_range[MT6360_RANGE_MAX] = {
MT6360_LINEAR_RANGE(MT6360_RANGE_VMIVR, 3900000, 0, 0x5F, 100000),
MT6360_LINEAR_RANGE(MT6360_RANGE_ICHG, 100000, 0, 0x31, 100000),
MT6360_LINEAR_RANGE(MT6360_RANGE_VOREG, 3900000, 0, 0x51, 10000),
MT6360_LINEAR_RANGE(MT6360_RANGE_AICR, 100000, 0, 0x3F, 50000),
MT6360_LINEAR_RANGE(MT6360_RANGE_IPREC, 100000, 0, 0x0F, 50000),
MT6360_LINEAR_RANGE(MT6360_RANGE_IEOC, 100000, 0, 0x0F, 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 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;
u32 sel, value;
ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL7, &sel);
if (ret < 0)
return ret;
sel = (sel & MT6360_ICHG_MASK) >> MT6360_ICHG_SHFT;
ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_ICHG], sel, &value);
if (!ret)
val->intval = value;
return ret;
}
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;
u32 sel, value;
ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL4, &sel);
if (ret < 0)
return ret;
sel = (sel & MT6360_VOREG_MASK) >> MT6360_VOREG_SHFT;
ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_VOREG], sel, &value);
if (!ret)
val->intval = value;
return ret;
}
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;
u32 sel, value;
ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL3, &sel);
if (ret < 0)
return ret;
sel = (sel & MT6360_IAICR_MASK) >> MT6360_IAICR_SHFT;
ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_AICR], sel, &value);
if (!ret)
val->intval = value;
return ret;
}
static int mt6360_charger_get_mivr(struct mt6360_chg_info *mci,
union power_supply_propval *val)
{
int ret;
u32 sel, value;
ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL6, &sel);
if (ret < 0)
return ret;
sel = (sel & MT6360_VMIVR_MASK) >> MT6360_VMIVR_SHFT;
ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_VMIVR], sel, &value);
if (!ret)
val->intval = value;
return ret;
}
static int mt6360_charger_get_iprechg(struct mt6360_chg_info *mci,
union power_supply_propval *val)
{
int ret;
u32 sel, value;
ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL8, &sel);
if (ret < 0)
return ret;
sel = (sel & MT6360_IPREC_MASK) >> MT6360_IPREC_SHFT;
ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_IPREC], sel, &value);
if (!ret)
val->intval = value;
return ret;
}
static int mt6360_charger_get_ieoc(struct mt6360_chg_info *mci,
union power_supply_propval *val)
{
int ret;
u32 sel, value;
ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL9, &sel);
if (ret < 0)
return ret;
sel = (sel & MT6360_IEOC_MASK) >> MT6360_IEOC_SHFT;
ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_IEOC], sel, &value);
if (!ret)
val->intval = value;
return ret;
}
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)
{
u32 sel;
linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_ICHG], val->intval, &sel);
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)
{
u32 sel;
linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_VOREG], val->intval, &sel);
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)
{
u32 sel;
linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_AICR], val->intval, &sel);
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)
{
u32 sel;
linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_VMIVR], val->intval, &sel);
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)
{
u32 sel;
linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_IPREC], val->intval, &sel);
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)
{
u32 sel;
linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_IEOC], val->intval, &sel);
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:
mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
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 | IRQF_ONESHOT,
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;
}
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_chg_init_setting(struct mt6360_chg_info *mci)
{
int ret;
u32 sel;
sel = mt6360_vinovp_trans_to_sel(mci->vinovp);
ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL19,
MT6360_VINOVP_MASK, sel << MT6360_VINOVP_SHFT);
if (ret)
return dev_err_probe(mci->dev, ret, "%s: Failed to apply vinovp\n", __func__);
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 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;
mci->dev = &pdev->dev;
mci->vinovp = 6500000;
mutex_init(&mci->chgdet_lock);
platform_set_drvdata(pdev, mci);
devm_work_autocancel(&pdev->dev, &mci->chrdet_work, mt6360_chrdet_work);
ret = device_property_read_u32(&pdev->dev, "richtek,vinovp-microvolt", &mci->vinovp);
if (ret)
dev_warn(&pdev->dev, "Failed to parse vinovp in DT, keep default 6.5v\n");
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_chg_init_setting(mci);
if (ret)
return dev_err_probe(&pdev->dev, ret, "Failed to initial setting\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_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);
schedule_work(&mci->chrdet_work);
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 <gene_chen@richtek.com>");
MODULE_DESCRIPTION("MT6360 Charger Driver");
MODULE_LICENSE("GPL");