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mfd: 88pm886: Initialize the battery page

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Initialize the PMIC's battery page. The battery page registers are
shared between Vbus regulator, charger, fuelgauge and camera flash
blocks, hence the commonization of the page.

Signed-off-by: Duje Mihanović <duje@dujemihanovic.xyz>
Reviewed-by: Karel Balej <balejk@matfyz.cz>
Link: https://patch.msgid.link/20260613-88pm886-vbus-v2-2-021dfb02c6bb@dujemihanovic.xyz
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Duje Mihanović
2026-06-13 16:20:54 +02:00
committed by Lee Jones
parent 6ebc88313c
commit 824b2c8473
2 changed files with 25 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/mfd/88pm886.c
View File

@@ -16,6 +16,12 @@ static const struct regmap_config pm886_regmap_config = {
.max_register = PM886_REG_RTC_SPARE6,
};
static const struct regmap_config pm886_regmap_battery_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = PM886_REG_CLS_CONFIG1,
};
static const struct regmap_irq pm886_regmap_irqs[] = {
REGMAP_IRQ_REG(PM886_IRQ_ONKEY, 0, PM886_INT_ENA1_ONKEY),
};
@@ -85,10 +91,11 @@ static int pm886_setup_irq(struct pm886_chip *chip,
static int pm886_probe(struct i2c_client *client)
{
struct regmap *regmap, *regmap_battery;
struct regmap_irq_chip_data *irq_data;
struct device *dev = &client->dev;
struct i2c_client *battery_page;
struct pm886_chip *chip;
struct regmap *regmap;
unsigned int chip_id;
int err;
@@ -112,6 +119,18 @@ static int pm886_probe(struct i2c_client *client)
if (chip->chip_id != chip_id)
return dev_err_probe(dev, -EINVAL, "Unsupported chip: 0x%x\n", chip_id);
battery_page = devm_i2c_new_dummy_device(dev, client->adapter,
client->addr + PM886_PAGE_OFFSET_BATTERY);
if (IS_ERR(battery_page))
return dev_err_probe(dev, PTR_ERR(battery_page),
"Failed to initialize battery page\n");
regmap_battery = devm_regmap_init_i2c(battery_page, &pm886_regmap_battery_config);
if (IS_ERR(regmap_battery))
return dev_err_probe(dev, PTR_ERR(regmap_battery),
"Failed to initialize battery regmap\n");
chip->regmap_battery = regmap_battery;
err = pm886_setup_irq(chip, &irq_data);
if (err)
return err;

5
include/linux/mfd/88pm886.h
View File

@@ -11,6 +11,7 @@
#define PM886_PAGE_OFFSET_REGULATORS 1
#define PM886_PAGE_OFFSET_GPADC 2
#define PM886_PAGE_OFFSET_BATTERY 3
#define PM886_REG_ID 0x00
@@ -128,9 +129,13 @@
#define PM886_GPADC_BIAS_LEVELS 16
#define PM886_GPADC_INDEX_TO_BIAS_uA(i) (1 + (i) * 5)
/* Battery block register definitions */
#define PM886_REG_CLS_CONFIG1 0x71
struct pm886_chip {
struct i2c_client *client;
unsigned int chip_id;
struct regmap *regmap;
struct regmap *regmap_battery;
};
#endif /* __MFD_88PM886_H */