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linux/drivers/power/supply/mt6360_charger.c
AngeloGioacchino Del Regno 1e0fb11364 power: supply: mt6360_charger: Fix of_match for usb-otg-vbus regulator 
The of_match shall correspond to the name of the regulator subnode,
or the deprecated `regulator-compatible` property must be used:
failing to do so, the regulator won't probe (and the driver will
as well not probe).

Since the devicetree binding for this driver is actually correct
and wants DTs to use the "usb-otg-vbus-regulator" subnode name,
fix this driver by aligning the `of_match` string to what the DT
binding wants.

Fixes: 0402e8ebb8 ("power: supply: mt6360_charger: add MT6360 charger support")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20240410084405.1389378-1-angelogioacchino.delregno@collabora.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2024-04-15 13:31:37 +02:00

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// 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,
};
static const struct linear_range mt6360_chg_range[MT6360_RANGE_MAX] = {
LINEAR_RANGE_IDX(MT6360_RANGE_VMIVR, 3900000, 0, 0x5F, 100000),
LINEAR_RANGE_IDX(MT6360_RANGE_ICHG, 100000, 0, 0x31, 100000),
LINEAR_RANGE_IDX(MT6360_RANGE_VOREG, 3900000, 0, 0x51, 10000),
LINEAR_RANGE_IDX(MT6360_RANGE_AICR, 100000, 0, 0x3F, 50000),
LINEAR_RANGE_IDX(MT6360_RANGE_IPREC, 100000, 0, 0x0F, 50000),
LINEAR_RANGE_IDX(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, &regval);
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, &regval);
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, &regval);
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-regulator",
.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);
ret = devm_work_autocancel(&pdev->dev, &mci->chrdet_work, mt6360_chrdet_work);
if (ret)
return dev_err_probe(&pdev->dev, ret, "Failed to set delayed work\n");
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");
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