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power: supply: bq27xxx: add support for TI bq34z100

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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: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Krzysztof Kozlowski 2020-09-19 16:04:18 +02:00 committed by Sebastian Reichel
parent 7be64ae0bf
commit 41a7431dba
3 changed files with 52 additions and 1 deletions
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50
drivers/power/supply/bq27xxx_battery.c
View File

@ -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);
@ -1914,7 +1959,10 @@ 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:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
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:
ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val);

2
drivers/power/supply/bq27xxx_battery_i2c.c
View File

@ -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);

1
include/linux/power/bq27xxx_battery.h
View File

@ -32,6 +32,7 @@ enum bq27xxx_chip {
BQ27621,
BQ27Z561,
BQ28Z610,
BQ34Z100,
};
struct bq27xxx_device_info;