Commit 41a7431d authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Sebastian Reichel
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power: supply: bq27xxx: add support for TI bq34z100 



Add support for new device: the TI bq34z100-G1, a Wide Range Fuel Gauge
for Li-Ion, PbA, NiMH, and NiCd batteries.  The device shares a lot with
other models, although it has its own differences requiring new quirks.

This patch was tested on a system equipped with NiMH batteries.

Signed-off-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 7be64ae0

drivers/power/supply/bq27xxx_battery.c

+49 −1
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ 
 * https://www.ti.com/product/bq27621-g1

 * https://www.ti.com/product/bq27z561

 * https://www.ti.com/product/bq28z610

 * https://www.ti.com/product/bq34z100-g1

 */



#include <linux/device.h>
@@ -476,6 +477,26 @@ static u8 
		[BQ27XXX_REG_DCAP] = 0x3c,

		[BQ27XXX_REG_AP] = 0x22,

		BQ27XXX_DM_REG_ROWS,

	},

	bq34z100_regs[BQ27XXX_REG_MAX] = {

		[BQ27XXX_REG_CTRL] = 0x00,

		[BQ27XXX_REG_TEMP] = 0x0c,

		[BQ27XXX_REG_INT_TEMP] = 0x2a,

		[BQ27XXX_REG_VOLT] = 0x08,

		[BQ27XXX_REG_AI] = 0x0a,

		[BQ27XXX_REG_FLAGS] = 0x0e,

		[BQ27XXX_REG_TTE] = 0x18,

		[BQ27XXX_REG_TTF] = 0x1a,

		[BQ27XXX_REG_TTES] = 0x1e,

		[BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,

		[BQ27XXX_REG_NAC] = INVALID_REG_ADDR,

		[BQ27XXX_REG_FCC] = 0x06,

		[BQ27XXX_REG_CYCT] = 0x2c,

		[BQ27XXX_REG_AE] = 0x24,

		[BQ27XXX_REG_SOC] = 0x02,

		[BQ27XXX_REG_DCAP] = 0x3c,

		[BQ27XXX_REG_AP] = 0x22,

		BQ27XXX_DM_REG_ROWS,

	};



static enum power_supply_property bq27000_props[] = {
@@ -750,6 +771,27 @@ static enum power_supply_property bq28z610_props[] = { 
	POWER_SUPPLY_PROP_MANUFACTURER,

};



static enum power_supply_property bq34z100_props[] = {

	POWER_SUPPLY_PROP_STATUS,

	POWER_SUPPLY_PROP_PRESENT,

	POWER_SUPPLY_PROP_VOLTAGE_NOW,

	POWER_SUPPLY_PROP_CURRENT_NOW,

	POWER_SUPPLY_PROP_CAPACITY,

	POWER_SUPPLY_PROP_CAPACITY_LEVEL,

	POWER_SUPPLY_PROP_TEMP,

	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,

	POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,

	POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,

	POWER_SUPPLY_PROP_TECHNOLOGY,

	POWER_SUPPLY_PROP_CHARGE_FULL,

	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,

	POWER_SUPPLY_PROP_CYCLE_COUNT,

	POWER_SUPPLY_PROP_ENERGY_NOW,

	POWER_SUPPLY_PROP_POWER_AVG,

	POWER_SUPPLY_PROP_HEALTH,

	POWER_SUPPLY_PROP_MANUFACTURER,

};



struct bq27xxx_dm_reg {

	u8 subclass_id;

	u8 offset;
@@ -857,6 +899,7 @@ static struct bq27xxx_dm_reg bq27621_dm_regs[] = { 
#define BQ27Z561_O_BITS		BIT(5)

#define BQ27XXX_O_SOC_SI	BIT(6) /* SoC is single register */

#define BQ27XXX_O_HAS_CI	BIT(7) /* has Capacity Inaccurate flag */

#define BQ27XXX_O_MUL_CHEM	BIT(8) /* multiple chemistries supported */



#define BQ27XXX_DATA(ref, key, opt) {		\

	.opts = (opt),				\
@@ -903,6 +946,8 @@ static struct { 
	[BQ27621]   = BQ27XXX_DATA(bq27621,   0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),

	[BQ27Z561]  = BQ27XXX_DATA(bq27z561,  0         , BQ27Z561_O_BITS),

	[BQ28Z610]  = BQ27XXX_DATA(bq28z610,  0         , BQ27Z561_O_BITS),

	[BQ34Z100]  = BQ27XXX_DATA(bq34z100,  0         , BQ27XXX_O_OTDC | BQ27XXX_O_SOC_SI | \

							  BQ27XXX_O_HAS_CI | BQ27XXX_O_MUL_CHEM),

};



static DEFINE_MUTEX(bq27xxx_list_lock);
@@ -1914,6 +1959,9 @@ static int bq27xxx_battery_get_property(struct power_supply *psy, 
		ret = bq27xxx_simple_value(di->cache.time_to_full, val);

		break;

	case POWER_SUPPLY_PROP_TECHNOLOGY:

		if (di->opts & BQ27XXX_O_MUL_CHEM)

			val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;

		else

			val->intval = POWER_SUPPLY_TECHNOLOGY_LION;

		break;

	case POWER_SUPPLY_PROP_CHARGE_NOW:

drivers/power/supply/bq27xxx_battery_i2c.c

+2 −0
Original line number Diff line number Diff line
@@ -247,6 +247,7 @@ static const struct i2c_device_id bq27xxx_i2c_id_table[] = { 
	{ "bq27621", BQ27621 },

	{ "bq27z561", BQ27Z561 },

	{ "bq28z610", BQ28Z610 },

	{ "bq34z100", BQ34Z100 },

	{},

};

MODULE_DEVICE_TABLE(i2c, bq27xxx_i2c_id_table);
@@ -282,6 +283,7 @@ static const struct of_device_id bq27xxx_battery_i2c_of_match_table[] = { 
	{ .compatible = "ti,bq27621" },

	{ .compatible = "ti,bq27z561" },

	{ .compatible = "ti,bq28z610" },

	{ .compatible = "ti,bq34z100" },

	{},

};

MODULE_DEVICE_TABLE(of, bq27xxx_battery_i2c_of_match_table);

include/linux/power/bq27xxx_battery.h

+1 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ enum bq27xxx_chip { 
	BQ27621,

	BQ27Z561,

	BQ28Z610,

	BQ34Z100,

};



struct bq27xxx_device_info;