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Commit bf02dca9 authored by Andreas Dannenberg's avatar Andreas Dannenberg Committed by Sebastian Reichel
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power: bq24257: Add basic support for bq24250/bq24251 



This patch adds basic support for bq24250 and bq24251 which are very
similar to the bq24257 the driver was originally written for. Basic
support means the ability to select a device through Kconfig, DT and
ACPI, an instance variable allowing to check which chip is active, and
the reporting back of the selected device through the model_name power
supply sysfs property.

This patch by itself is not sufficient to actually use those two added
devices in a real-world setting due to some feature differences which
are addressed by other patches in this series.

Signed-off-by: default avatarAndreas Dannenberg <dannenberg@ti.com>
Reviewed-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
parent fff59df1

drivers/power/Kconfig

+3 −2
Original line number Diff line number Diff line
@@ -409,12 +409,13 @@ config CHARGER_BQ24190 
	  Say Y to enable support for the TI BQ24190 battery charger.



config CHARGER_BQ24257

	tristate "TI BQ24257 battery charger driver"

	tristate "TI BQ24250/24251/24257 battery charger driver"

	depends on I2C

	depends on GPIOLIB || COMPILE_TEST

	depends on REGMAP_I2C

	help

	  Say Y to enable support for the TI BQ24257 battery charger.

	  Say Y to enable support for the TI BQ24250, BQ24251, and BQ24257 battery

	  chargers.



config CHARGER_BQ24735

	tristate "TI BQ24735 battery charger support"

drivers/power/bq24257_charger.c

+49 −3
Original line number Diff line number Diff line
@@ -13,6 +13,10 @@ 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * Datasheets:

 * http://www.ti.com/product/bq24250

 * http://www.ti.com/product/bq24251

 * http://www.ti.com/product/bq24257

 */



#include <linux/module.h>
@@ -40,6 +44,22 @@ 


#define BQ24257_ILIM_SET_DELAY		1000	/* msec */



/*

 * When adding support for new devices make sure that enum bq2425x_chip and

 * bq2425x_chip_name[] always stay in sync!

 */

enum bq2425x_chip {

	BQ24250,

	BQ24251,

	BQ24257,

};



static const char *const bq2425x_chip_name[] = {

	"bq24250",

	"bq24251",

	"bq24257",

};



enum bq24257_fields {

	F_WD_FAULT, F_WD_EN, F_STAT, F_FAULT,			    /* REG 1 */

	F_RESET, F_IILIMIT, F_EN_STAT, F_EN_TERM, F_CE, F_HZ_MODE,  /* REG 2 */
@@ -70,6 +90,8 @@ struct bq24257_device { 
	struct device *dev;

	struct power_supply *charger;



	enum bq2425x_chip chip;



	struct regmap *rmap;

	struct regmap_field *rmap_fields[F_MAX_FIELDS];
@@ -248,6 +270,10 @@ static int bq24257_power_supply_get_property(struct power_supply *psy, 
		val->strval = BQ24257_MANUFACTURER;

		break;



	case POWER_SUPPLY_PROP_MODEL_NAME:

		val->strval = bq2425x_chip_name[bq->chip];

		break;



	case POWER_SUPPLY_PROP_ONLINE:

		val->intval = state.power_good;

		break;
@@ -561,6 +587,7 @@ static int bq24257_hw_init(struct bq24257_device *bq) 


static enum power_supply_property bq24257_power_supply_props[] = {

	POWER_SUPPLY_PROP_MANUFACTURER,

	POWER_SUPPLY_PROP_MODEL_NAME,

	POWER_SUPPLY_PROP_STATUS,

	POWER_SUPPLY_PROP_ONLINE,

	POWER_SUPPLY_PROP_HEALTH,
@@ -644,6 +671,7 @@ static int bq24257_probe(struct i2c_client *client, 
{

	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);

	struct device *dev = &client->dev;

	const struct acpi_device_id *acpi_id;

	struct bq24257_device *bq;

	int ret;

	int i;
@@ -660,6 +688,18 @@ static int bq24257_probe(struct i2c_client *client, 
	bq->client = client;

	bq->dev = dev;



	if (ACPI_HANDLE(dev)) {

		acpi_id = acpi_match_device(dev->driver->acpi_match_table,

					    &client->dev);

		if (!acpi_id) {

			dev_err(dev, "Failed to match ACPI device\n");

			return -ENODEV;

		}

		bq->chip = (enum bq2425x_chip)acpi_id->driver_data;

	} else {

		bq->chip = (enum bq2425x_chip)id->driver_data;

	}



	mutex_init(&bq->lock);



	bq->rmap = devm_regmap_init_i2c(client, &bq24257_regmap_config);
@@ -722,7 +762,7 @@ static int bq24257_probe(struct i2c_client *client, 
					bq24257_irq_handler_thread,

					IRQF_TRIGGER_FALLING |

					IRQF_TRIGGER_RISING | IRQF_ONESHOT,

					"bq24257", bq);

					bq2425x_chip_name[bq->chip], bq);

	if (ret) {

		dev_err(dev, "Failed to request IRQ #%d\n", client->irq);

		return ret;
@@ -793,19 +833,25 @@ static const struct dev_pm_ops bq24257_pm = { 
};



static const struct i2c_device_id bq24257_i2c_ids[] = {

	{ "bq24257", 0 },

	{ "bq24250", BQ24250 },

	{ "bq24251", BQ24251 },

	{ "bq24257", BQ24257 },

	{},

};

MODULE_DEVICE_TABLE(i2c, bq24257_i2c_ids);



static const struct of_device_id bq24257_of_match[] = {

	{ .compatible = "ti,bq24250", },

	{ .compatible = "ti,bq24251", },

	{ .compatible = "ti,bq24257", },

	{ },

};

MODULE_DEVICE_TABLE(of, bq24257_of_match);



static const struct acpi_device_id bq24257_acpi_match[] = {

	{"BQ242570", 0},

	{ "BQ242500", BQ24250 },

	{ "BQ242510", BQ24251 },

	{ "BQ242570", BQ24257 },

	{},

};

MODULE_DEVICE_TABLE(acpi, bq24257_acpi_match);