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4eed7f5a83
Add support for TI BQ78Z100, I2C interface gas gauge. It provides a fully integrated safety protection and authentication for 1 to 2-series cell Li-Ion and Li-Polymer battery packs. The patch was tested with BQ78Z100 equipment. CASE I: Discharging: POWER_SUPPLY_NAME=bq78z100-0 POWER_SUPPLY_STATUS=Discharging POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_VOLTAGE_NOW=3386000 POWER_SUPPLY_CURRENT_NOW=-5000 POWER_SUPPLY_CAPACITY=27 POWER_SUPPLY_CAPACITY_LEVEL=Normal POWER_SUPPLY_TEMP=269 POWER_SUPPLY_TIME_TO_EMPTY_NOW=1249920 POWER_SUPPLY_TECHNOLOGY=Li-ion POWER_SUPPLY_CHARGE_FULL=6494000 POWER_SUPPLY_CHARGE_NOW=1736000 POWER_SUPPLY_CHARGE_FULL_DESIGN=6000000 POWER_SUPPLY_CYCLE_COUNT=1 POWER_SUPPLY_POWER_AVG=-20000 POWER_SUPPLY_HEALTH=Good POWER_SUPPLY_MANUFACTURER=Texas Instruments CASE II : No discharging current: POWER_SUPPLY_NAME=bq78z100-0 POWER_SUPPLY_STATUS=Not charging POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_VOLTAGE_NOW=3386000 POWER_SUPPLY_CURRENT_NOW=0 POWER_SUPPLY_CAPACITY=27 POWER_SUPPLY_CAPACITY_LEVEL=Normal POWER_SUPPLY_TEMP=270 POWER_SUPPLY_TECHNOLOGY=Li-ion POWER_SUPPLY_CHARGE_FULL=6494000 POWER_SUPPLY_CHARGE_NOW=1734000 POWER_SUPPLY_CHARGE_FULL_DESIGN=6000000 POWER_SUPPLY_CYCLE_COUNT=1 POWER_SUPPLY_POWER_AVG=0 POWER_SUPPLY_HEALTH=Good POWER_SUPPLY_MANUFACTURER=Texas Instruments Signed-off-by: LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_BQ27X00_BATTERY_H__
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#define __LINUX_BQ27X00_BATTERY_H__
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enum bq27xxx_chip {
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BQ27000 = 1, /* bq27000, bq27200 */
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BQ27010, /* bq27010, bq27210 */
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BQ2750X, /* bq27500 deprecated alias */
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BQ2751X, /* bq27510, bq27520 deprecated alias */
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BQ2752X,
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BQ27500, /* bq27500/1 */
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BQ27510G1, /* bq27510G1 */
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BQ27510G2, /* bq27510G2 */
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BQ27510G3, /* bq27510G3 */
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BQ27520G1, /* bq27520G1 */
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BQ27520G2, /* bq27520G2 */
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BQ27520G3, /* bq27520G3 */
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BQ27520G4, /* bq27520G4 */
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BQ27521, /* bq27521 */
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BQ27530, /* bq27530, bq27531 */
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BQ27531,
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BQ27541, /* bq27541, bq27542, bq27546, bq27742 */
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BQ27542,
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BQ27546,
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BQ27742,
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BQ27545, /* bq27545 */
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BQ27411,
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BQ27421, /* bq27421, bq27441, bq27621 */
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BQ27425,
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BQ27426,
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BQ27441,
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BQ27621,
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BQ27Z561,
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BQ28Z610,
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BQ34Z100,
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BQ78Z100,
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};
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struct bq27xxx_device_info;
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struct bq27xxx_access_methods {
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int (*read)(struct bq27xxx_device_info *di, u8 reg, bool single);
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int (*write)(struct bq27xxx_device_info *di, u8 reg, int value, bool single);
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int (*read_bulk)(struct bq27xxx_device_info *di, u8 reg, u8 *data, int len);
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int (*write_bulk)(struct bq27xxx_device_info *di, u8 reg, u8 *data, int len);
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};
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struct bq27xxx_reg_cache {
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int temperature;
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int time_to_empty;
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int time_to_empty_avg;
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int time_to_full;
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int charge_full;
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int cycle_count;
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int capacity;
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int energy;
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int flags;
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int health;
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};
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struct bq27xxx_device_info {
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struct device *dev;
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int id;
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enum bq27xxx_chip chip;
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u32 opts;
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const char *name;
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struct bq27xxx_dm_reg *dm_regs;
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u32 unseal_key;
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struct bq27xxx_access_methods bus;
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struct bq27xxx_reg_cache cache;
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int charge_design_full;
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unsigned long last_update;
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struct delayed_work work;
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struct power_supply *bat;
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struct list_head list;
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struct mutex lock;
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u8 *regs;
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};
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void bq27xxx_battery_update(struct bq27xxx_device_info *di);
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int bq27xxx_battery_setup(struct bq27xxx_device_info *di);
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void bq27xxx_battery_teardown(struct bq27xxx_device_info *di);
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#endif
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