[PATCH v5 0/8] Add support for mp2733 battery charger

[PATCH v5 0/8] Add support for mp2733 battery charger

[Saravanan Sekar]

changes in v5:
  - fixed commit message on v5-0002 and v5-0004

changes in v4:
  - fixed attributes groups review comments in v3
  - added new bug fix patches v4-0007 and v4-0008 

changes in v3:
  - fixed dt_binding_check error
  - fixed spelling usb->USB

changes in v2:
  - fixed spelling
  - revert back probe to probe_new in mfd driver

I do not see a cover letter, but FWIW,
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
for all patches except DT binding
Note, some of the comments regarding spelling were given, I believe
you are going to address them in v3.


add support for mp2733 Battery charger control driver for Monolithic
Power System's MP2733 chipset 

Saravanan Sekar (8):
  iio: adc: mp2629: fix wrong comparison of channel
  mfd: mp2629: fix failed to get iio channel by device name
  iio: adc: mp2629: fix potential array out of bound access
  power: supply: fix wrong interpretation of register value
  mfd: mp2629: Add support for mps mp2733 battery charger
  iio: adc: mp2629: restrict input voltage mask for mp2629
  power: supply: Add support for mp2733 battery charger
  power: supply: mp2629: Add USB fast charge settings

 .../ABI/testing/sysfs-class-power-mp2629      |  16 ++
 drivers/iio/adc/mp2629_adc.c                  |   8 +-
 drivers/mfd/mp2629.c                          |   7 +-
 drivers/power/supply/mp2629_charger.c         | 229 +++++++++++++++---
 include/linux/mfd/mp2629.h                    |   6 +
 5 files changed, 228 insertions(+), 38 deletions(-)

-- 
2.32.0

[PATCH v5 1/8] iio: adc: mp2629: fix wrong comparison of channel

[Saravanan Sekar]

Input voltage channel enum is compared against iio address instead
of the channel.

Fixes: 7abd9fb64682 ("iio: adc: mp2629: Add support for mp2629 ADC driver")
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
 drivers/iio/adc/mp2629_adc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/mp2629_adc.c b/drivers/iio/adc/mp2629_adc.c
index 30a31f185d08..f7af9af1665d 100644
--- a/drivers/iio/adc/mp2629_adc.c
+++ b/drivers/iio/adc/mp2629_adc.c
@@ -74,7 +74,7 @@ static int mp2629_read_raw(struct iio_dev *indio_dev,
 		if (ret)
 			return ret;
 
-		if (chan->address == MP2629_INPUT_VOLT)
+		if (chan->channel == MP2629_INPUT_VOLT)
 			rval &= GENMASK(6, 0);
 		*val = rval;
 		return IIO_VAL_INT;
-- 
2.32.0

[PATCH v5 2/8] mfd: mp2629: fix failed to get iio channel by device name

[Saravanan Sekar]

The mfd cell devices name populated on sysfs entry is dynamically derived
from an auto instance which introduced a regression. As a result
mpc2629_charger driver failed to get adc channel because of iio consumer
name mismatch with the sysfs.

/sys/class/i2c-adapter/i2c-1/mp2629_adc.0.auto/
/sys/class/i2c-adapter/i2c-1/mp2629_charger.1.auto/

Fixes: 466a62d7642f ("mfd: core: Make a best effort attempt to match devices")
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
---
 drivers/mfd/mp2629.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/mp2629.c b/drivers/mfd/mp2629.c
index 16840ec5fd1c..f4c5aa06f38c 100644
--- a/drivers/mfd/mp2629.c
+++ b/drivers/mfd/mp2629.c
@@ -51,7 +51,7 @@ static int mp2629_probe(struct i2c_client *client)
 		return PTR_ERR(ddata->regmap);
 	}
 
-	ret = devm_mfd_add_devices(ddata->dev, PLATFORM_DEVID_AUTO, mp2629_cell,
+	ret = devm_mfd_add_devices(ddata->dev, PLATFORM_DEVID_NONE, mp2629_cell,
 				   ARRAY_SIZE(mp2629_cell), NULL, 0, NULL);
 	if (ret)
 		dev_err(ddata->dev, "Failed to register sub-devices %d\n", ret);
-- 
2.32.0

[PATCH v5 3/8] iio: adc: mp2629: fix potential array out of bound access

[Saravanan Sekar]

Add sentinel at end of maps to avoid potential array out of
bound access in iio core.

Fixes: 7abd9fb6468 ("iio: adc: mp2629: Add support for mp2629 ADC driver")
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
---
 drivers/iio/adc/mp2629_adc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/mp2629_adc.c b/drivers/iio/adc/mp2629_adc.c
index f7af9af1665d..88e947f300cf 100644
--- a/drivers/iio/adc/mp2629_adc.c
+++ b/drivers/iio/adc/mp2629_adc.c
@@ -57,7 +57,8 @@ static struct iio_map mp2629_adc_maps[] = {
 	MP2629_MAP(SYSTEM_VOLT, "system-volt"),
 	MP2629_MAP(INPUT_VOLT, "input-volt"),
 	MP2629_MAP(BATT_CURRENT, "batt-current"),
-	MP2629_MAP(INPUT_CURRENT, "input-current")
+	MP2629_MAP(INPUT_CURRENT, "input-current"),
+	{ }
 };
 
 static int mp2629_read_raw(struct iio_dev *indio_dev,
-- 
2.32.0

[PATCH v5 4/8] power: supply: fix wrong interpretation of register value

[Saravanan Sekar]

fix the switch cases to match the register value.

Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
---
 drivers/power/supply/mp2629_charger.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/power/supply/mp2629_charger.c b/drivers/power/supply/mp2629_charger.c
index bf9c27b463a8..46d620bd23b9 100644
--- a/drivers/power/supply/mp2629_charger.c
+++ b/drivers/power/supply/mp2629_charger.c
@@ -284,10 +284,10 @@ static int mp2629_charger_battery_get_prop(struct power_supply *psy,
 			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
 			break;
 		case 0x01:
-		case 0x10:
+		case 0x02:
 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
 			break;
-		case 0x11:
+		case 0x03:
 			val->intval = POWER_SUPPLY_STATUS_FULL;
 		}
 		break;
@@ -305,7 +305,7 @@ static int mp2629_charger_battery_get_prop(struct power_supply *psy,
 		case 0x01:
 			val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
 			break;
-		case 0x10:
+		case 0x02:
 			val->intval = POWER_SUPPLY_CHARGE_TYPE_STANDARD;
 			break;
 		default:
-- 
2.32.0

[PATCH v5 5/8] mfd: mp2629: Add support for mps mp2733 battery charger

[Saravanan Sekar]

mp2733 is updated version of mp2629 battery charge management
device for single-cell Li-ion or Li-polymer battery. Additionally
supports USB fast-charge and higher range of input voltage.

Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
 drivers/mfd/mp2629.c       | 5 ++++-
 include/linux/mfd/mp2629.h | 6 ++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/mp2629.c b/drivers/mfd/mp2629.c
index f4c5aa06f38c..57db0f5009b9 100644
--- a/drivers/mfd/mp2629.c
+++ b/drivers/mfd/mp2629.c
@@ -13,6 +13,7 @@
 #include <linux/mfd/mp2629.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 
@@ -43,6 +44,7 @@ static int mp2629_probe(struct i2c_client *client)
 		return -ENOMEM;
 
 	ddata->dev = &client->dev;
+	ddata->chip_id = (uintptr_t)device_get_match_data(&client->dev);
 	i2c_set_clientdata(client, ddata);
 
 	ddata->regmap = devm_regmap_init_i2c(client, &mp2629_regmap_config);
@@ -60,7 +62,8 @@ static int mp2629_probe(struct i2c_client *client)
 }
 
 static const struct of_device_id mp2629_of_match[] = {
-	{ .compatible = "mps,mp2629"},
+	{ .compatible = "mps,mp2629", .data = (void *)CHIP_ID_MP2629 },
+	{ .compatible = "mps,mp2733", .data = (void *)CHIP_ID_MP2733 },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, mp2629_of_match);
diff --git a/include/linux/mfd/mp2629.h b/include/linux/mfd/mp2629.h
index 89b706900b57..ee0e65720c75 100644
--- a/include/linux/mfd/mp2629.h
+++ b/include/linux/mfd/mp2629.h
@@ -9,9 +9,15 @@
 #include <linux/device.h>
 #include <linux/regmap.h>
 
+enum mp2xx_chip_id {
+	CHIP_ID_MP2629,
+	CHIP_ID_MP2733,
+};
+
 struct mp2629_data {
 	struct device *dev;
 	struct regmap *regmap;
+	enum mp2xx_chip_id chip_id;
 };
 
 enum mp2629_adc_chan {
-- 
2.32.0

[PATCH v5 6/8] iio: adc: mp2629: restrict input voltage mask for mp2629

[Saravanan Sekar]

Add support for mp2733 which is updated version of mp2629
with a higher range of input voltage.

Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
 drivers/iio/adc/mp2629_adc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/mp2629_adc.c b/drivers/iio/adc/mp2629_adc.c
index 88e947f300cf..18290e176e1e 100644
--- a/drivers/iio/adc/mp2629_adc.c
+++ b/drivers/iio/adc/mp2629_adc.c
@@ -66,6 +66,7 @@ static int mp2629_read_raw(struct iio_dev *indio_dev,
 			int *val, int *val2, long mask)
 {
 	struct mp2629_adc *info = iio_priv(indio_dev);
+	struct mp2629_data *ddata = dev_get_drvdata(info->dev);
 	unsigned int rval;
 	int ret;
 
@@ -75,8 +76,10 @@ static int mp2629_read_raw(struct iio_dev *indio_dev,
 		if (ret)
 			return ret;
 
-		if (chan->channel == MP2629_INPUT_VOLT)
+		if (chan->channel == MP2629_INPUT_VOLT &&
+		    ddata->chip_id == CHIP_ID_MP2629)
 			rval &= GENMASK(6, 0);
+
 		*val = rval;
 		return IIO_VAL_INT;
 
-- 
2.32.0

[PATCH v5 7/8] power: supply: Add support for mp2733 battery charger

[Saravanan Sekar]

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@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
 drivers/power/supply/mp2629_charger.c | 223 ++++++++++++++++++++++----
 1 file changed, 192 insertions(+), 31 deletions(-)

diff --git a/drivers/power/supply/mp2629_charger.c b/drivers/power/supply/mp2629_charger.c
index 46d620bd23b9..2ff3729afc48 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 (*mp2xx_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 +398,40 @@ static int mp2629_charger_battery_set_prop(struct power_supply *psy,
 	}
 }
 
+static int mp2733_get_usb_type(unsigned int rval)
+{
+	switch (rval) {
+	case MP2733_SOURCE_TYPE_APPLE_1p0:
+	case MP2733_SOURCE_TYPE_APPLE_2p1:
+	case MP2733_SOURCE_TYPE_APPLE_2p4:
+		return POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID;
+	case MP2733_SOURCE_TYPE_SDP:
+		return POWER_SUPPLY_USB_TYPE_SDP;
+	case MP2733_SOURCE_TYPE_CDP:
+		return POWER_SUPPLY_USB_TYPE_CDP;
+	case MP2733_SOURCE_TYPE_DCP:
+		return POWER_SUPPLY_USB_TYPE_DCP;
+	default:
+		return POWER_SUPPLY_USB_TYPE_UNKNOWN;
+	}
+}
+
+static int mp2629_get_usb_type(unsigned int rval)
+{
+	switch (rval) {
+	case MP2629_SOURCE_TYPE_SDP:
+		return POWER_SUPPLY_USB_TYPE_SDP;
+	case MP2629_SOURCE_TYPE_CDP:
+		return POWER_SUPPLY_USB_TYPE_CDP;
+	case MP2629_SOURCE_TYPE_DCP:
+		return POWER_SUPPLY_USB_TYPE_DCP;
+	case MP2629_SOURCE_TYPE_OTG:
+		return POWER_SUPPLY_USB_TYPE_PD_DRP;
+	default:
+		return POWER_SUPPLY_USB_TYPE_UNKNOWN;
+	}
+}
+
 static int mp2629_charger_usb_get_prop(struct power_supply *psy,
 				enum power_supply_property psp,
 				union power_supply_propval *val)
@@ -367,23 +455,7 @@ 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->mp2xx_get_usb_type(rval);
 		break;
 
 	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
@@ -550,11 +622,72 @@ static ssize_t batt_impedance_compensation_store(struct device *dev,
 
 static DEVICE_ATTR_RW(batt_impedance_compensation);
 
-static struct attribute *mp2629_charger_sysfs_attrs[] = {
+static struct attribute *mp2xx_batt_imp_sysfs_attrs[] = {
+	&dev_attr_batt_impedance_compensation.attr,
+	NULL
+};
+ATTRIBUTE_GROUPS(mp2xx_batt_imp_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  sysfs_emit(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 *mp2xx_fast_charge_sysfs_attrs[] = {
+	&dev_attr_usb_fast_charge.attr,
+	NULL
+};
+ATTRIBUTE_GROUPS(mp2xx_fast_charge_sysfs);
+
+static struct attribute *mp2xx_all_sysfs_attrs[] = {
+	&dev_attr_usb_fast_charge.attr,
 	&dev_attr_batt_impedance_compensation.attr,
 	NULL
 };
-ATTRIBUTE_GROUPS(mp2629_charger_sysfs);
+ATTRIBUTE_GROUPS(mp2xx_all_sysfs);
 
 static void mp2629_charger_disable(void *data)
 {
@@ -564,6 +697,23 @@ 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,
+
+		.mp2xx_get_usb_type = mp2629_get_usb_type,
+	},
+	[CHIP_ID_MP2733] = {
+		.rfields = mp2733_reg_fields,
+		.chip_props = mp2733_chip_props,
+		.has_fast_charge = 1,
+
+		.mp2xx_get_usb_type = mp2733_get_usb_type,
+	},
+};
+
 static int mp2629_charger_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -578,6 +728,7 @@ 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 +737,8 @@ 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 +765,16 @@ 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 &&
+	    charger->chip_info->has_fast_charge) {
+		psy_cfg.attr_grp = mp2xx_all_sysfs_groups;
+	} else if (charger->chip_info->has_impedance) {
+		psy_cfg.attr_grp = mp2xx_batt_imp_sysfs_groups;
+	} else if (charger->chip_info->has_fast_charge) {
+		psy_cfg.attr_grp = mp2xx_fast_charge_sysfs_groups;
+	}
+
 	charger->battery = devm_power_supply_register(dev,
 					 &mp2629_battery_desc, &psy_cfg);
 	if (IS_ERR(charger->battery)) {
-- 
2.32.0

[PATCH v5 8/8] power: supply: mp2629: Add USB fast charge settings

[Saravanan Sekar]

Allows the user to change the USB device fast charge setting to advertise
host on enumeration helps to accelerate the charging cycle. Altering this
value resets USB existing connection.

Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
 .../ABI/testing/sysfs-class-power-mp2629         | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-class-power-mp2629 b/Documentation/ABI/testing/sysfs-class-power-mp2629
index 914d67caac0d..b386d02cb010 100644
--- a/Documentation/ABI/testing/sysfs-class-power-mp2629
+++ b/Documentation/ABI/testing/sysfs-class-power-mp2629
@@ -1,3 +1,19 @@
+What:		/sys/class/power_supply/mp2629_battery/usb_fast_charge
+Date:		June 2022
+KernelVersion:	5.20
+Description:
+		Represents a USB device fast charge settings.Altering this
+		value resets USB existing connection
+		USB DP:DM[0:0] 0.6V : Hi-Z
+		USB DP:DM[0:1] 3.3V : 0.6V
+		USB DP:DM[1:0] 0.6V : 0.6V
+		USB DP:DM[1:1] 0.6V : 3.3V
+
+                Access: Read, Write
+
+                Valid values: Represented in bit DP & DM setting. Valid
+			      range is [0, 3].
+
 What:		/sys/class/power_supply/mp2629_battery/batt_impedance_compen
 Date:		April 2020
 KernelVersion:	5.7
-- 
2.32.0

Re: [PATCH v5 1/8] iio: adc: mp2629: fix wrong comparison of channel

[Jonathan Cameron]

On Sat, 29 Oct 2022 11:29:53 +0200
Saravanan Sekar <sravanhome@gmail.com> wrote:

> Input voltage channel enum is compared against iio address instead
> of the channel.
> 
> Fixes: 7abd9fb64682 ("iio: adc: mp2629: Add support for mp2629 ADC driver")
> Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Applied to the fixes-togreg branch of iio.git and marked for stable.

Thanks,
Jonathan

> ---
>  drivers/iio/adc/mp2629_adc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/mp2629_adc.c b/drivers/iio/adc/mp2629_adc.c
> index 30a31f185d08..f7af9af1665d 100644
> --- a/drivers/iio/adc/mp2629_adc.c
> +++ b/drivers/iio/adc/mp2629_adc.c
> @@ -74,7 +74,7 @@ static int mp2629_read_raw(struct iio_dev *indio_dev,
>  		if (ret)
>  			return ret;
>  
> -		if (chan->address == MP2629_INPUT_VOLT)
> +		if (chan->channel == MP2629_INPUT_VOLT)
>  			rval &= GENMASK(6, 0);
>  		*val = rval;
>  		return IIO_VAL_INT;

Re: [PATCH v5 3/8] iio: adc: mp2629: fix potential array out of bound access

[Jonathan Cameron]

On Sat, 29 Oct 2022 11:29:55 +0200
Saravanan Sekar <sravanhome@gmail.com> wrote:

> Add sentinel at end of maps to avoid potential array out of
> bound access in iio core.
> 
> Fixes: 7abd9fb6468 ("iio: adc: mp2629: Add support for mp2629 ADC driver")
> Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Applied to the fixes-togreg branch of iio.git and marked for stable.

Thanks,

Jonathan

> ---
>  drivers/iio/adc/mp2629_adc.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/mp2629_adc.c b/drivers/iio/adc/mp2629_adc.c
> index f7af9af1665d..88e947f300cf 100644
> --- a/drivers/iio/adc/mp2629_adc.c
> +++ b/drivers/iio/adc/mp2629_adc.c
> @@ -57,7 +57,8 @@ static struct iio_map mp2629_adc_maps[] = {
>  	MP2629_MAP(SYSTEM_VOLT, "system-volt"),
>  	MP2629_MAP(INPUT_VOLT, "input-volt"),
>  	MP2629_MAP(BATT_CURRENT, "batt-current"),
> -	MP2629_MAP(INPUT_CURRENT, "input-current")
> +	MP2629_MAP(INPUT_CURRENT, "input-current"),
> +	{ }
>  };
>  
>  static int mp2629_read_raw(struct iio_dev *indio_dev,

Re: [PATCH v5 6/8] iio: adc: mp2629: restrict input voltage mask for mp2629

[Jonathan Cameron]

On Sat, 29 Oct 2022 11:29:58 +0200
Saravanan Sekar <sravanhome@gmail.com> wrote:

> Add support for mp2733 which is updated version of mp2629
> with a higher range of input voltage.
> 
> Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Hmm. this is going to slow things down wrt to this series going in.
We want the associated fix to go in during this cycle, and this
is dependant on a change going via MFD.  Ah well.

Generally I prefer to avoid using chip IDs for this sort of check
because they don't generalize as well as an actual flag for this
'feature' stored in a chip_info type structure.

However, we can tidy that up if it becomes relevant as more parts
are added to the driver.

On basis this might end up going via MFD,

Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

> ---
>  drivers/iio/adc/mp2629_adc.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/mp2629_adc.c b/drivers/iio/adc/mp2629_adc.c
> index 88e947f300cf..18290e176e1e 100644
> --- a/drivers/iio/adc/mp2629_adc.c
> +++ b/drivers/iio/adc/mp2629_adc.c
> @@ -66,6 +66,7 @@ static int mp2629_read_raw(struct iio_dev *indio_dev,
>  			int *val, int *val2, long mask)
>  {
>  	struct mp2629_adc *info = iio_priv(indio_dev);
> +	struct mp2629_data *ddata = dev_get_drvdata(info->dev);
>  	unsigned int rval;
>  	int ret;
>  
> @@ -75,8 +76,10 @@ static int mp2629_read_raw(struct iio_dev *indio_dev,
>  		if (ret)
>  			return ret;
>  
> -		if (chan->channel == MP2629_INPUT_VOLT)
> +		if (chan->channel == MP2629_INPUT_VOLT &&
> +		    ddata->chip_id == CHIP_ID_MP2629)
>  			rval &= GENMASK(6, 0);
> +
>  		*val = rval;
>  		return IIO_VAL_INT;
>  

Re: [PATCH v5 5/8] mfd: mp2629: Add support for mps mp2733 battery charger

[Jonathan Cameron]

On Sat, 29 Oct 2022 11:29:57 +0200
Saravanan Sekar <sravanhome@gmail.com> wrote:

> mp2733 is updated version of mp2629 battery charge management
> device for single-cell Li-ion or Li-polymer battery. Additionally
> supports USB fast-charge and higher range of input voltage.
> 
> Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>

There is a small ordering issue wrt to the next patch.

Ideal way to solve that is to introduce the new infrastructure
for the chip ID, but not the new ID itself until after the next
patch ensures we don't apply the wrong mask.

Jonathan

> ---
>  drivers/mfd/mp2629.c       | 5 ++++-
>  include/linux/mfd/mp2629.h | 6 ++++++
>  2 files changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/mfd/mp2629.c b/drivers/mfd/mp2629.c
> index f4c5aa06f38c..57db0f5009b9 100644
> --- a/drivers/mfd/mp2629.c
> +++ b/drivers/mfd/mp2629.c
> @@ -13,6 +13,7 @@
>  #include <linux/mfd/mp2629.h>
>  #include <linux/module.h>
>  #include <linux/platform_device.h>
> +#include <linux/property.h>
>  #include <linux/regmap.h>
>  #include <linux/slab.h>
>  
> @@ -43,6 +44,7 @@ static int mp2629_probe(struct i2c_client *client)
>  		return -ENOMEM;
>  
>  	ddata->dev = &client->dev;
> +	ddata->chip_id = (uintptr_t)device_get_match_data(&client->dev);
>  	i2c_set_clientdata(client, ddata);
>  
>  	ddata->regmap = devm_regmap_init_i2c(client, &mp2629_regmap_config);
> @@ -60,7 +62,8 @@ static int mp2629_probe(struct i2c_client *client)
>  }
>  
>  static const struct of_device_id mp2629_of_match[] = {
> -	{ .compatible = "mps,mp2629"},
> +	{ .compatible = "mps,mp2629", .data = (void *)CHIP_ID_MP2629 },
> +	{ .compatible = "mps,mp2733", .data = (void *)CHIP_ID_MP2733 },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(of, mp2629_of_match);
> diff --git a/include/linux/mfd/mp2629.h b/include/linux/mfd/mp2629.h
> index 89b706900b57..ee0e65720c75 100644
> --- a/include/linux/mfd/mp2629.h
> +++ b/include/linux/mfd/mp2629.h
> @@ -9,9 +9,15 @@
>  #include <linux/device.h>
>  #include <linux/regmap.h>
>  
> +enum mp2xx_chip_id {
> +	CHIP_ID_MP2629,
> +	CHIP_ID_MP2733,
> +};
> +
>  struct mp2629_data {
>  	struct device *dev;
>  	struct regmap *regmap;
> +	enum mp2xx_chip_id chip_id;
>  };
>  
>  enum mp2629_adc_chan {

Re: [PATCH v5 0/8] Add support for mp2733 battery charger

[Sebastian Reichel]

[-- Attachment #1: Type: text/plain, Size: 309 bytes --]

Hi,

On Sat, Oct 29, 2022 at 11:29:52AM +0200, Saravanan Sekar wrote:
> add support for mp2733 Battery charger control driver for
> Monolithic Power System's MP2733 chipset.

I suppose you do not actually want to get this merged concidering
you did not carry over the Acked-by you got in v4? :)

-- Sebastian

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]

Re: [PATCH v5 0/8] Add support for mp2733 battery charger

[saravanan sekar]

On 30/10/22 00:02, Sebastian Reichel wrote:
> Hi,
> 
> On Sat, Oct 29, 2022 at 11:29:52AM +0200, Saravanan Sekar wrote:
>> add support for mp2733 Battery charger control driver for
>> Monolithic Power System's MP2733 chipset.
> 
> I suppose you do not actually want to get this merged concidering
> you did not carry over the Acked-by you got in v4? :)
> 
> -- Sebastian

Sorry, my mistake I added your ack to v5-0005 instead of v5-0007

Thanks,
Saravanan

Re: [PATCH v5 4/8] power: supply: fix wrong interpretation of register value

[Andy Shevchenko]

On Sat, Oct 29, 2022 at 11:30 AM Saravanan Sekar <sravanhome@gmail.com> wrote:
>
> fix the switch cases to match the register value.

Something is still wrong with the English grammar (i.e. capitalization
at the beginning of the sentence).


-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH v5 0/8] Add support for mp2733 battery charger

[Krzysztof Kozlowski]

On 29/10/2022 05:29, Saravanan Sekar wrote:
> changes in v5:
>   - fixed commit message on v5-0002 and v5-0004
> 
> changes in v4:
>   - fixed attributes groups review comments in v3
>   - added new bug fix patches v4-0007 and v4-0008 
> 
> changes in v3:
>   - fixed dt_binding_check error
>   - fixed spelling usb->USB
> 
> changes in v2:
>   - fixed spelling
>   - revert back probe to probe_new in mfd driver
> 
> I do not see a cover letter, but FWIW,
> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>

This does not belong to the cover letter. Please add respective tags to
patches, where applicable. If Andy gave Rb tag for entire patchset, add
it to the patches.

> for all patches except DT binding
> Note, some of the comments regarding spelling were given, I believe
> you are going to address them in v3.

...and this comment is from who? Andy?

> 
> 
> add support for mp2733 Battery charger control driver for Monolithic
> Power System's MP2733 chipset 
> 
> Saravanan Sekar (8):
>   iio: adc: mp2629: fix wrong comparison of channel
>   mfd: mp2629: fix failed to get iio channel by device name
>   iio: adc: mp2629: fix potential array out of bound access
>   power: supply: fix wrong interpretation of register value
>   mfd: mp2629: Add support for mps mp2733 battery charger
>   iio: adc: mp2629: restrict input voltage mask for mp2629
>   power: supply: Add support for mp2733 battery charger
>   power: supply: mp2629: Add USB fast charge settings
> 
>  .../ABI/testing/sysfs-class-power-mp2629      |  16 ++
>  drivers/iio/adc/mp2629_adc.c                  |   8 +-
>  drivers/mfd/mp2629.c                          |   7 +-
>  drivers/power/supply/mp2629_charger.c         | 229 +++++++++++++++---
>  include/linux/mfd/mp2629.h                    |   6 +

Why do you Cc DT maintainers?

>  5 files changed, 228 insertions(+), 38 deletions(-)
> 

Best regards,
Krzysztof

Re: [PATCH v5 0/8] Add support for mp2733 battery charger

[saravanan sekar]

On 04/11/22 02:54, Krzysztof Kozlowski wrote:
> On 29/10/2022 05:29, Saravanan Sekar wrote:
>> changes in v5:
>>    - fixed commit message on v5-0002 and v5-0004
>>
>> changes in v4:
>>    - fixed attributes groups review comments in v3
>>    - added new bug fix patches v4-0007 and v4-0008
>>
>> changes in v3:
>>    - fixed dt_binding_check error
>>    - fixed spelling usb->USB
>>
>> changes in v2:
>>    - fixed spelling
>>    - revert back probe to probe_new in mfd driver
>>
>> I do not see a cover letter, but FWIW,
>> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> 
> This does not belong to the cover letter. Please add respective tags to
> patches, where applicable. If Andy gave Rb tag for entire patchset, add
> it to the patches.
>

Hello Krzysztof,

These are v1 comments from Andy to me, all of them are addressed and I 
kept in cover letter for history

>> for all patches except DT binding
>> Note, some of the comments regarding spelling were given, I believe
>> you are going to address them in v3.
> 
> ...and this comment is from who? Andy?
> 
>>
>>
>> add support for mp2733 Battery charger control driver for Monolithic
>> Power System's MP2733 chipset
>>
>> Saravanan Sekar (8):
>>    iio: adc: mp2629: fix wrong comparison of channel
>>    mfd: mp2629: fix failed to get iio channel by device name
>>    iio: adc: mp2629: fix potential array out of bound access
>>    power: supply: fix wrong interpretation of register value
>>    mfd: mp2629: Add support for mps mp2733 battery charger
>>    iio: adc: mp2629: restrict input voltage mask for mp2629
>>    power: supply: Add support for mp2733 battery charger
>>    power: supply: mp2629: Add USB fast charge settings
>>
>>   .../ABI/testing/sysfs-class-power-mp2629      |  16 ++
>>   drivers/iio/adc/mp2629_adc.c                  |   8 +-
>>   drivers/mfd/mp2629.c                          |   7 +-
>>   drivers/power/supply/mp2629_charger.c         | 229 +++++++++++++++---
>>   include/linux/mfd/mp2629.h                    |   6 +
> 
> Why do you Cc DT maintainers?
>

This patch series includes DT bindings documentation which has already 
merged by 15Jun2022.

https://lore.kernel.org/all/20220615145357.2370044-3-sravanhome@gmail.com/

>>   5 files changed, 228 insertions(+), 38 deletions(-)
>>
> 
> Best regards,
> Krzysztof
> 

Thanks,
Saravanan

Re: [PATCH v5 0/8] Add support for mp2733 battery charger

[Krzysztof Kozlowski]

On 04/11/2022 03:13, saravanan sekar wrote:
>>>   .../ABI/testing/sysfs-class-power-mp2629      |  16 ++
>>>   drivers/iio/adc/mp2629_adc.c                  |   8 +-
>>>   drivers/mfd/mp2629.c                          |   7 +-
>>>   drivers/power/supply/mp2629_charger.c         | 229 +++++++++++++++---
>>>   include/linux/mfd/mp2629.h                    |   6 +
>>
>> Why do you Cc DT maintainers?
>>
> 
> This patch series includes DT bindings documentation which has already 
> merged by 15Jun2022.

I don't see the DT bindings patch in above log. I did not get it and it
is not here:

https://lore.kernel.org/all/3e1b8549-0961-697b-63b8-db6b37d53c6b@gmail.com/

> 
> https://lore.kernel.org/all/20220615145357.2370044-3-sravanhome@gmail.com/

This is v3, how is it related?

Best regards,
Krzysztof