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path: root/drivers/power/max17042_battery.c
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Diffstat (limited to 'drivers/power/max17042_battery.c')
-rw-r--r--drivers/power/max17042_battery.c90
1 files changed, 45 insertions, 45 deletions
diff --git a/drivers/power/max17042_battery.c b/drivers/power/max17042_battery.c
index 1da6c5fbdff5..6cc5e87ec031 100644
--- a/drivers/power/max17042_battery.c
+++ b/drivers/power/max17042_battery.c
@@ -63,13 +63,10 @@
#define dP_ACC_100 0x1900
#define dP_ACC_200 0x3200
-#define MAX17042_IC_VERSION 0x0092
-#define MAX17047_IC_VERSION 0x00AC /* same for max17050 */
-
struct max17042_chip {
struct i2c_client *client;
struct regmap *regmap;
- struct power_supply battery;
+ struct power_supply *battery;
enum max170xx_chip_type chip_type;
struct max17042_platform_data *pdata;
struct work_struct work;
@@ -96,8 +93,7 @@ static int max17042_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
- struct max17042_chip *chip = container_of(psy,
- struct max17042_chip, battery);
+ struct max17042_chip *chip = power_supply_get_drvdata(psy);
struct regmap *map = chip->regmap;
int ret;
u32 data;
@@ -132,7 +128,7 @@ static int max17042_get_property(struct power_supply *psy,
val->intval *= 20000; /* Units of LSB = 20mV */
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
- if (chip->chip_type == MAX17042)
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042)
ret = regmap_read(map, MAX17042_V_empty, &data);
else
ret = regmap_read(map, MAX17047_V_empty, &data);
@@ -272,6 +268,7 @@ static inline void max17042_override_por(struct regmap *map,
static inline void max10742_unlock_model(struct max17042_chip *chip)
{
struct regmap *map = chip->regmap;
+
regmap_write(map, MAX17042_MLOCKReg1, MODEL_UNLOCK1);
regmap_write(map, MAX17042_MLOCKReg2, MODEL_UNLOCK2);
}
@@ -289,6 +286,7 @@ static inline void max17042_write_model_data(struct max17042_chip *chip,
{
struct regmap *map = chip->regmap;
int i;
+
for (i = 0; i < size; i++)
regmap_write(map, addr + i,
chip->pdata->config_data->cell_char_tbl[i]);
@@ -379,7 +377,8 @@ static void max17042_write_config_regs(struct max17042_chip *chip)
regmap_write(map, MAX17042_FilterCFG,
config->filter_cfg);
regmap_write(map, MAX17042_RelaxCFG, config->relax_cfg);
- if (chip->chip_type == MAX17047)
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17047 ||
+ chip->chip_type == MAXIM_DEVICE_TYPE_MAX17050)
regmap_write(map, MAX17047_FullSOCThr,
config->full_soc_thresh);
}
@@ -392,7 +391,7 @@ static void max17042_write_custom_regs(struct max17042_chip *chip)
max17042_write_verify_reg(map, MAX17042_RCOMP0, config->rcomp0);
max17042_write_verify_reg(map, MAX17042_TempCo, config->tcompc0);
max17042_write_verify_reg(map, MAX17042_ICHGTerm, config->ichgt_term);
- if (chip->chip_type == MAX17042) {
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042) {
regmap_write(map, MAX17042_EmptyTempCo, config->empty_tempco);
max17042_write_verify_reg(map, MAX17042_K_empty0,
config->kempty0);
@@ -501,14 +500,14 @@ static inline void max17042_override_por_values(struct max17042_chip *chip)
max17042_override_por(map, MAX17042_FullCAP, config->fullcap);
max17042_override_por(map, MAX17042_FullCAPNom, config->fullcapnom);
- if (chip->chip_type == MAX17042)
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042)
max17042_override_por(map, MAX17042_SOC_empty,
config->socempty);
max17042_override_por(map, MAX17042_LAvg_empty, config->lavg_empty);
max17042_override_por(map, MAX17042_dQacc, config->dqacc);
max17042_override_por(map, MAX17042_dPacc, config->dpacc);
- if (chip->chip_type == MAX17042)
+ if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042)
max17042_override_por(map, MAX17042_V_empty, config->vempty);
else
max17042_override_por(map, MAX17047_V_empty, config->vempty);
@@ -529,7 +528,6 @@ static int max17042_init_chip(struct max17042_chip *chip)
{
struct regmap *map = chip->regmap;
int ret;
- int val;
max17042_override_por_values(chip);
/* After Power up, the MAX17042 requires 500mS in order
@@ -572,8 +570,7 @@ static int max17042_init_chip(struct max17042_chip *chip)
max17042_load_new_capacity_params(chip);
/* Init complete, Clear the POR bit */
- regmap_read(map, MAX17042_STATUS, &val);
- regmap_write(map, MAX17042_STATUS, val & (~STATUS_POR_BIT));
+ regmap_update_bits(map, MAX17042_STATUS, STATUS_POR_BIT, 0x0);
return 0;
}
@@ -604,7 +601,7 @@ static irqreturn_t max17042_thread_handler(int id, void *dev)
max17042_set_soc_threshold(chip, 1);
}
- power_supply_changed(&chip->battery);
+ power_supply_changed(chip->battery);
return IRQ_HANDLED;
}
@@ -664,10 +661,28 @@ static const struct regmap_config max17042_regmap_config = {
.val_format_endian = REGMAP_ENDIAN_NATIVE,
};
+static const struct power_supply_desc max17042_psy_desc = {
+ .name = "max170xx_battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .get_property = max17042_get_property,
+ .properties = max17042_battery_props,
+ .num_properties = ARRAY_SIZE(max17042_battery_props),
+};
+
+static const struct power_supply_desc max17042_no_current_sense_psy_desc = {
+ .name = "max170xx_battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .get_property = max17042_get_property,
+ .properties = max17042_battery_props,
+ .num_properties = ARRAY_SIZE(max17042_battery_props) - 2,
+};
+
static int max17042_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ const struct power_supply_desc *max17042_desc = &max17042_psy_desc;
+ struct power_supply_config psy_cfg = {};
struct max17042_chip *chip;
int ret;
int i;
@@ -694,29 +709,13 @@ static int max17042_probe(struct i2c_client *client,
}
i2c_set_clientdata(client, chip);
-
- regmap_read(chip->regmap, MAX17042_DevName, &val);
- if (val == MAX17042_IC_VERSION) {
- dev_dbg(&client->dev, "chip type max17042 detected\n");
- chip->chip_type = MAX17042;
- } else if (val == MAX17047_IC_VERSION) {
- dev_dbg(&client->dev, "chip type max17047/50 detected\n");
- chip->chip_type = MAX17047;
- } else {
- dev_err(&client->dev, "device version mismatch: %x\n", val);
- return -EIO;
- }
-
- chip->battery.name = "max170xx_battery";
- chip->battery.type = POWER_SUPPLY_TYPE_BATTERY;
- chip->battery.get_property = max17042_get_property;
- chip->battery.properties = max17042_battery_props;
- chip->battery.num_properties = ARRAY_SIZE(max17042_battery_props);
+ chip->chip_type = id->driver_data;
+ psy_cfg.drv_data = chip;
/* When current is not measured,
* CURRENT_NOW and CURRENT_AVG properties should be invisible. */
if (!chip->pdata->enable_current_sense)
- chip->battery.num_properties -= 2;
+ max17042_desc = &max17042_no_current_sense_psy_desc;
if (chip->pdata->r_sns == 0)
chip->pdata->r_sns = MAX17042_DEFAULT_SNS_RESISTOR;
@@ -733,21 +732,22 @@ static int max17042_probe(struct i2c_client *client,
regmap_write(chip->regmap, MAX17042_LearnCFG, 0x0007);
}
- ret = power_supply_register(&client->dev, &chip->battery);
- if (ret) {
+ chip->battery = power_supply_register(&client->dev, max17042_desc,
+ &psy_cfg);
+ if (IS_ERR(chip->battery)) {
dev_err(&client->dev, "failed: power supply register\n");
- return ret;
+ return PTR_ERR(chip->battery);
}
if (client->irq) {
ret = request_threaded_irq(client->irq, NULL,
max17042_thread_handler,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- chip->battery.name, chip);
+ chip->battery->desc->name, chip);
if (!ret) {
- regmap_read(chip->regmap, MAX17042_CONFIG, &val);
- val |= CONFIG_ALRT_BIT_ENBL;
- regmap_write(chip->regmap, MAX17042_CONFIG, val);
+ regmap_update_bits(chip->regmap, MAX17042_CONFIG,
+ CONFIG_ALRT_BIT_ENBL,
+ CONFIG_ALRT_BIT_ENBL);
max17042_set_soc_threshold(chip, 1);
} else {
client->irq = 0;
@@ -773,7 +773,7 @@ static int max17042_remove(struct i2c_client *client)
if (client->irq)
free_irq(client->irq, chip);
- power_supply_unregister(&chip->battery);
+ power_supply_unregister(chip->battery);
return 0;
}
@@ -823,9 +823,9 @@ MODULE_DEVICE_TABLE(of, max17042_dt_match);
#endif
static const struct i2c_device_id max17042_id[] = {
- { "max17042", 0 },
- { "max17047", 1 },
- { "max17050", 2 },
+ { "max17042", MAXIM_DEVICE_TYPE_MAX17042 },
+ { "max17047", MAXIM_DEVICE_TYPE_MAX17047 },
+ { "max17050", MAXIM_DEVICE_TYPE_MAX17050 },
{ }
};
MODULE_DEVICE_TABLE(i2c, max17042_id);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.