mp2733 is updated version of mp2629 battery charge management
which supports usb fast-charge and higher range of input voltage.
Signed-off-by: Saravanan Sekar <sravanhome@xxxxxxxxx>
---
drivers/power/supply/mp2629_charger.c | 228 ++++++++++++++++++++++----
1 file changed, 199 insertions(+), 29 deletions(-)
diff --git a/drivers/power/supply/mp2629_charger.c b/drivers/power/supply/mp2629_charger.c
index bf9c27b463a8..6f37bfc40e90 100644
--- a/drivers/power/supply/mp2629_charger.c
+++ b/drivers/power/supply/mp2629_charger.c
@@ -30,12 +30,15 @@
#define MP2629_REG_INTERRUPT 0x0b
#define MP2629_REG_STATUS 0x0c
#define MP2629_REG_FAULT 0x0d
+#define MP2629_REG_FAST_CHARGE 0x17
#define MP2629_MASK_INPUT_TYPE GENMASK(7, 5)
#define MP2629_MASK_CHARGE_TYPE GENMASK(4, 3)
#define MP2629_MASK_CHARGE_CTRL GENMASK(5, 4)
#define MP2629_MASK_WDOG_CTRL GENMASK(5, 4)
#define MP2629_MASK_IMPEDANCE GENMASK(7, 4)
+#define MP2733_MASK_FAST_CHARGE GENMASK(2, 1)
+#define MP2733_MASK_FAST_CHARGE_RESET BIT(0)
#define MP2629_INPUTSOURCE_CHANGE GENMASK(7, 5)
#define MP2629_CHARGING_CHANGE GENMASK(4, 3)
@@ -62,6 +65,17 @@ enum mp2629_source_type {
MP2629_SOURCE_TYPE_OTG = 7,
};
+enum mp2733_source_type {
+ MP2733_SOURCE_TYPE_NO_INPUT,
+ MP2733_SOURCE_TYPE_NON_STD,
+ MP2733_SOURCE_TYPE_APPLE_1p0,
+ MP2733_SOURCE_TYPE_APPLE_2p1,
+ MP2733_SOURCE_TYPE_APPLE_2p4,
+ MP2733_SOURCE_TYPE_SDP,
+ MP2733_SOURCE_TYPE_CDP,
+ MP2733_SOURCE_TYPE_DCP,
+};
+
enum mp2629_field {
INPUT_ILIM,
INPUT_VLIM,
@@ -72,11 +86,30 @@ enum mp2629_field {
MP2629_MAX_FIELD
};
+struct mp2629_prop {
+ int reg;
+ int mask;
+ int min;
+ int max;
+ int step;
+ int shift;
+};
+
+struct mp2xx_chip_info {
+ const struct reg_field *rfields;
+ struct mp2629_prop *chip_props;
+ bool has_impedance;
+ bool has_fast_charge;
+
+ int (*mpxx_get_usb_type)(unsigned int rval);
+};
+
struct mp2629_charger {
struct device *dev;
int status;
int fault;
+ const struct mp2xx_chip_info *chip_info;
struct regmap *regmap;
struct regmap_field *regmap_fields[MP2629_MAX_FIELD];
struct mutex lock;
@@ -85,15 +118,6 @@ struct mp2629_charger {
struct iio_channel *iiochan[MP2629_ADC_CHAN_END];
};
-struct mp2629_prop {
- int reg;
- int mask;
- int min;
- int max;
- int step;
- int shift;
-};
-
static enum power_supply_usb_type mp2629_usb_types[] = {
POWER_SUPPLY_USB_TYPE_SDP,
POWER_SUPPLY_USB_TYPE_DCP,
@@ -126,7 +150,25 @@ static enum power_supply_property mp2629_charger_bat_props[] = {
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
};
-static struct mp2629_prop props[] = {
+static struct mp2629_prop mp2733_chip_props[] = {
+ MP2629_PROPS(INPUT_ILIM, 100000, 3250000, 50000),
+ MP2629_PROPS(INPUT_VLIM, 3800000, 15200000, 100000),
+ MP2629_PROPS(CHARGE_ILIM, 320000, 4520000, 40000),
+ MP2629_PROPS(CHARGE_VLIM, 3400000, 4670000, 10000),
+ MP2629_PROPS(PRECHARGE, 120000, 720000, 40000),
+ MP2629_PROPS(TERM_CURRENT, 80000, 680000, 40000),
+};
+
+static const struct reg_field mp2733_reg_fields[] = {
+ [INPUT_ILIM] = REG_FIELD(MP2629_REG_INPUT_ILIM, 0, 5),
+ [INPUT_VLIM] = REG_FIELD(MP2629_REG_INPUT_VLIM, 0, 6),
+ [CHARGE_ILIM] = REG_FIELD(MP2629_REG_CHARGE_ILIM, 0, 6),
+ [CHARGE_VLIM] = REG_FIELD(MP2629_REG_CHARGE_VLIM, 1, 7),
+ [PRECHARGE] = REG_FIELD(MP2629_REG_PRECHARGE, 4, 7),
+ [TERM_CURRENT] = REG_FIELD(MP2629_REG_TERM_CURRENT, 0, 3),
+};
+
+static struct mp2629_prop mp2629_chip_props[] = {
MP2629_PROPS(INPUT_ILIM, 100000, 3250000, 50000),
MP2629_PROPS(INPUT_VLIM, 3800000, 5300000, 100000),
MP2629_PROPS(CHARGE_ILIM, 320000, 4520000, 40000),
@@ -174,6 +216,7 @@ static int mp2629_get_prop(struct mp2629_charger *charger,
{
int ret;
unsigned int rval;
+ struct mp2629_prop *props = charger->chip_info->chip_props;
ret = regmap_field_read(charger->regmap_fields[fld], &rval);
if (ret)
@@ -189,6 +232,7 @@ static int mp2629_set_prop(struct mp2629_charger *charger,
const union power_supply_propval *val)
{
unsigned int rval;
+ struct mp2629_prop *props = charger->chip_info->chip_props;
if (val->intval < props[fld].min || val->intval > props[fld].max)
return -EINVAL;
@@ -311,6 +355,16 @@ static int mp2629_charger_battery_get_prop(struct power_supply *psy,
default:
val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
}
+
+ if (charger->chip_info->has_fast_charge) {
+ ret = regmap_read(charger->regmap,
+ MP2629_REG_FAST_CHARGE, &rval);
+ if (ret)
+ break;
+
+ if (rval & BIT(6))
+ val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+ }
break;
default:
@@ -344,6 +398,58 @@ static int mp2629_charger_battery_set_prop(struct power_supply *psy,
}
}
+static int mp2733_get_usb_type(unsigned int rval)
+{
+ int type;
+
+ switch (rval) {
+ case MP2733_SOURCE_TYPE_APPLE_1p0:
+ case MP2733_SOURCE_TYPE_APPLE_2p1:
+ case MP2733_SOURCE_TYPE_APPLE_2p4:
+ type = POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID;
+ break;
+ case MP2733_SOURCE_TYPE_SDP:
+ type = POWER_SUPPLY_USB_TYPE_SDP;
+ break;
+ case MP2733_SOURCE_TYPE_CDP:
+ type = POWER_SUPPLY_USB_TYPE_CDP;
+ break;
+ case MP2733_SOURCE_TYPE_DCP:
+ type = POWER_SUPPLY_USB_TYPE_DCP;
+ break;
+ default:
+ type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+ break;
+ }
+
+ return type;
+}
+
+static int mp2629_get_usb_type(unsigned int rval)
+{
+ int type;
+
+ switch (rval) {
+ case MP2629_SOURCE_TYPE_SDP:
+ type = POWER_SUPPLY_USB_TYPE_SDP;
+ break;
+ case MP2629_SOURCE_TYPE_CDP:
+ type = POWER_SUPPLY_USB_TYPE_CDP;
+ break;
+ case MP2629_SOURCE_TYPE_DCP:
+ type = POWER_SUPPLY_USB_TYPE_DCP;
+ break;
+ case MP2629_SOURCE_TYPE_OTG:
+ type = POWER_SUPPLY_USB_TYPE_PD_DRP;
+ break;
+ default:
+ type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+ break;
+ }
+
+ return type;
+}
+
static int mp2629_charger_usb_get_prop(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@@ -367,23 +473,7 @@ static int mp2629_charger_usb_get_prop(struct power_supply *psy,
break;
rval = (rval & MP2629_MASK_INPUT_TYPE) >> 5;
- switch (rval) {
- case MP2629_SOURCE_TYPE_SDP:
- val->intval = POWER_SUPPLY_USB_TYPE_SDP;
- break;
- case MP2629_SOURCE_TYPE_CDP:
- val->intval = POWER_SUPPLY_USB_TYPE_CDP;
- break;
- case MP2629_SOURCE_TYPE_DCP:
- val->intval = POWER_SUPPLY_USB_TYPE_DCP;
- break;
- case MP2629_SOURCE_TYPE_OTG:
- val->intval = POWER_SUPPLY_USB_TYPE_PD_DRP;
- break;
- default:
- val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
- break;
- }
+ val->intval = charger->chip_info->mpxx_get_usb_type(rval);
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
@@ -556,6 +646,60 @@ static struct attribute *mp2629_charger_sysfs_attrs[] = {
};
ATTRIBUTE_GROUPS(mp2629_charger_sysfs);
+static ssize_t usb_fast_charge_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct mp2629_charger *charger = dev_get_drvdata(dev->parent);
+ unsigned int rval;
+ int ret;
+
+ ret = regmap_read(charger->regmap, MP2629_REG_INTERRUPT, &rval);
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "USB DP %u:DM %u\n", !!(rval & BIT(2)),
+ !!(rval & BIT(1)));
+}
+
+static ssize_t usb_fast_charge_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct mp2629_charger *charger = dev_get_drvdata(dev->parent);
+ unsigned int val;
+ int ret;
+
+ ret = kstrtouint(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ if (val > 3)
+ return -ERANGE;
+
+ ret = regmap_update_bits(charger->regmap, MP2629_REG_INTERRUPT,
+ MP2733_MASK_FAST_CHARGE, val << 1);
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(charger->regmap, MP2629_REG_INTERRUPT,
+ MP2733_MASK_FAST_CHARGE_RESET,
+ MP2733_MASK_FAST_CHARGE_RESET);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static DEVICE_ATTR_RW(usb_fast_charge);
+
+static struct attribute *mp2733_charger_sysfs_attrs[] = {
+ &dev_attr_usb_fast_charge.attr,
+ NULL
+};
+ATTRIBUTE_GROUPS(mp2733_charger_sysfs);
+
static void mp2629_charger_disable(void *data)
{
struct mp2629_charger *charger = data;
@@ -564,6 +708,25 @@ static void mp2629_charger_disable(void *data)
MP2629_MASK_CHARGE_CTRL, 0);
}
+static const struct mp2xx_chip_info mp2xx_chip_info_tbl[] = {
+ [CHIP_ID_MP2629] = {
+ .rfields = mp2629_reg_fields,
+ .chip_props = mp2629_chip_props,
+ .has_impedance = 1,
+ .has_fast_charge = 0,
+
+ .mpxx_get_usb_type = mp2629_get_usb_type,
+ },
+ [CHIP_ID_MP2733] = {
+ .rfields = mp2733_reg_fields,
+ .chip_props = mp2733_chip_props,
+ .has_impedance = 0,
+ .has_fast_charge = 1,
+
+ .mpxx_get_usb_type = mp2733_get_usb_type,
+ },
+};
+
static int mp2629_charger_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -578,6 +741,7 @@ static int mp2629_charger_probe(struct platform_device *pdev)
charger->regmap = ddata->regmap;
charger->dev = dev;
+ charger->chip_info = &mp2xx_chip_info_tbl[ddata->chip_id];
platform_set_drvdata(pdev, charger);
irq = platform_get_irq(to_platform_device(dev->parent), 0);
@@ -586,7 +750,8 @@ static int mp2629_charger_probe(struct platform_device *pdev)
for (i = 0; i < MP2629_MAX_FIELD; i++) {
charger->regmap_fields[i] = devm_regmap_field_alloc(dev,
- charger->regmap, mp2629_reg_fields[i]);
+ charger->regmap,
+ charger->chip_info->rfields[i]);
if (IS_ERR(charger->regmap_fields[i])) {
dev_err(dev, "regmap field alloc fail %d\n", i);
return PTR_ERR(charger->regmap_fields[i]);
@@ -613,7 +778,12 @@ static int mp2629_charger_probe(struct platform_device *pdev)
}
psy_cfg.drv_data = charger;
- psy_cfg.attr_grp = mp2629_charger_sysfs_groups;
+ if (charger->chip_info->has_impedance)
+ psy_cfg.attr_grp = mp2629_charger_sysfs_groups;
+
+ if (charger->chip_info->has_fast_charge)
+ psy_cfg.attr_grp = mp2733_charger_sysfs_groups;
+
charger->battery = devm_power_supply_register(dev,
&mp2629_battery_desc, &psy_cfg);
if (IS_ERR(charger->battery)) {
--
2.25.1
