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Date: Tue, 8 Sep 2020 22:13:19 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Sebastian Reichel <sre@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
"Andrew F. Davis" <afd@...com>,
Pali Rohár <pali@...nel.org>,
Dan Murphy <dmurphy@...com>,
Krzysztof Kozlowski <krzk@...nel.org>,
linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 7/7] 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: Krzysztof Kozlowski <krzk@...nel.org>
---
drivers/power/supply/bq27xxx_battery.c | 50 +++++++++++++++++++++-
drivers/power/supply/bq27xxx_battery_i2c.c | 2 +
include/linux/power/bq27xxx_battery.h | 1 +
3 files changed, 52 insertions(+), 1 deletion(-)
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index cda03e1f9586..315e0909e6a4 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -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);
diff --git a/drivers/power/supply/bq27xxx_battery_i2c.c b/drivers/power/supply/bq27xxx_battery_i2c.c
index 765873dfc495..eb4f4284982f 100644
--- a/drivers/power/supply/bq27xxx_battery_i2c.c
+++ b/drivers/power/supply/bq27xxx_battery_i2c.c
@@ -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);
diff --git a/include/linux/power/bq27xxx_battery.h b/include/linux/power/bq27xxx_battery.h
index 987d9652aa4e..111a40d0d3d5 100644
--- a/include/linux/power/bq27xxx_battery.h
+++ b/include/linux/power/bq27xxx_battery.h
@@ -32,6 +32,7 @@ enum bq27xxx_chip {
BQ27621,
BQ27Z561,
BQ28Z610,
+ BQ34Z100,
};
struct bq27xxx_device_info;
--
2.17.1
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