/*
-- -- * axp20x.c - MFD core driver for the X-Powers AXP202 and AXP209
++ ++ * axp20x.c - MFD core driver for the X-Powers' Power Management ICs
*
-- -- * AXP20x comprises an adaptive USB-Compatible PWM charger, 2 BUCK DC-DC
-- -- * converters, 5 LDOs, multiple 12-bit ADCs of voltage, current and temperature
-- -- * as well as 4 configurable GPIOs.
++ ++ * AXP20x typically comprises an adaptive USB-Compatible PWM charger, BUCK DC-DC
++ ++ * converters, LDOs, multiple 12-bit ADCs of voltage, current and temperature
++ ++ * as well as configurable GPIOs.
*
* Author: Carlo Caione <carlo@caione.org>
*
#include <linux/mfd/core.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
++ ++#include <linux/acpi.h>
#define AXP20X_OFF 0x80
++ ++static const char const *axp20x_model_names[] = {
++ ++ "AXP202",
++ ++ "AXP209",
++ ++ "AXP288",
++ ++};
++ ++
static const struct regmap_range axp20x_writeable_ranges[] = {
regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
regmap_reg_range(AXP20X_DCDC_MODE, AXP20X_FG_RES),
.n_yes_ranges = ARRAY_SIZE(axp20x_volatile_ranges),
};
++ ++static const struct regmap_range axp288_writeable_ranges[] = {
++ ++ regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ6_STATE),
++ ++ regmap_reg_range(AXP20X_DCDC_MODE, AXP288_FG_TUNE5),
++ ++};
++ ++
++ ++static const struct regmap_range axp288_volatile_ranges[] = {
++ ++ regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IPSOUT_V_HIGH_L),
++ ++};
++ ++
++ ++static const struct regmap_access_table axp288_writeable_table = {
++ ++ .yes_ranges = axp288_writeable_ranges,
++ ++ .n_yes_ranges = ARRAY_SIZE(axp288_writeable_ranges),
++ ++};
++ ++
++ ++static const struct regmap_access_table axp288_volatile_table = {
++ ++ .yes_ranges = axp288_volatile_ranges,
++ ++ .n_yes_ranges = ARRAY_SIZE(axp288_volatile_ranges),
++ ++};
++ ++
static struct resource axp20x_pek_resources[] = {
{
.name = "PEK_DBR",
},
};
++ ++static struct resource axp288_battery_resources[] = {
++ ++ {
++ ++ .start = AXP288_IRQ_QWBTU,
++ ++ .end = AXP288_IRQ_QWBTU,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_WBTU,
++ ++ .end = AXP288_IRQ_WBTU,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_QWBTO,
++ ++ .end = AXP288_IRQ_QWBTO,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_WBTO,
++ ++ .end = AXP288_IRQ_WBTO,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_WL2,
++ ++ .end = AXP288_IRQ_WL2,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_WL1,
++ ++ .end = AXP288_IRQ_WL1,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++};
++ ++
static const struct regmap_config axp20x_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.cache_type = REGCACHE_RBTREE,
};
-- --#define AXP20X_IRQ(_irq, _off, _mask) \
-- -- [AXP20X_IRQ_##_irq] = { .reg_offset = (_off), .mask = BIT(_mask) }
++ ++static const struct regmap_config axp288_regmap_config = {
++ ++ .reg_bits = 8,
++ ++ .val_bits = 8,
++ ++ .wr_table = &axp288_writeable_table,
++ ++ .volatile_table = &axp288_volatile_table,
++ ++ .max_register = AXP288_FG_TUNE5,
++ ++ .cache_type = REGCACHE_RBTREE,
++ ++};
++ ++
++ ++#define INIT_REGMAP_IRQ(_variant, _irq, _off, _mask) \
++ ++ [_variant##_IRQ_##_irq] = { .reg_offset = (_off), .mask = BIT(_mask) }
static const struct regmap_irq axp20x_regmap_irqs[] = {
-- -- AXP20X_IRQ(ACIN_OVER_V, 0, 7),
-- -- AXP20X_IRQ(ACIN_PLUGIN, 0, 6),
-- -- AXP20X_IRQ(ACIN_REMOVAL, 0, 5),
-- -- AXP20X_IRQ(VBUS_OVER_V, 0, 4),
-- -- AXP20X_IRQ(VBUS_PLUGIN, 0, 3),
-- -- AXP20X_IRQ(VBUS_REMOVAL, 0, 2),
-- -- AXP20X_IRQ(VBUS_V_LOW, 0, 1),
-- -- AXP20X_IRQ(BATT_PLUGIN, 1, 7),
-- -- AXP20X_IRQ(BATT_REMOVAL, 1, 6),
-- -- AXP20X_IRQ(BATT_ENT_ACT_MODE, 1, 5),
-- -- AXP20X_IRQ(BATT_EXIT_ACT_MODE, 1, 4),
-- -- AXP20X_IRQ(CHARG, 1, 3),
-- -- AXP20X_IRQ(CHARG_DONE, 1, 2),
-- -- AXP20X_IRQ(BATT_TEMP_HIGH, 1, 1),
-- -- AXP20X_IRQ(BATT_TEMP_LOW, 1, 0),
-- -- AXP20X_IRQ(DIE_TEMP_HIGH, 2, 7),
-- -- AXP20X_IRQ(CHARG_I_LOW, 2, 6),
-- -- AXP20X_IRQ(DCDC1_V_LONG, 2, 5),
-- -- AXP20X_IRQ(DCDC2_V_LONG, 2, 4),
-- -- AXP20X_IRQ(DCDC3_V_LONG, 2, 3),
-- -- AXP20X_IRQ(PEK_SHORT, 2, 1),
-- -- AXP20X_IRQ(PEK_LONG, 2, 0),
-- -- AXP20X_IRQ(N_OE_PWR_ON, 3, 7),
-- -- AXP20X_IRQ(N_OE_PWR_OFF, 3, 6),
-- -- AXP20X_IRQ(VBUS_VALID, 3, 5),
-- -- AXP20X_IRQ(VBUS_NOT_VALID, 3, 4),
-- -- AXP20X_IRQ(VBUS_SESS_VALID, 3, 3),
-- -- AXP20X_IRQ(VBUS_SESS_END, 3, 2),
-- -- AXP20X_IRQ(LOW_PWR_LVL1, 3, 1),
-- -- AXP20X_IRQ(LOW_PWR_LVL2, 3, 0),
-- -- AXP20X_IRQ(TIMER, 4, 7),
-- -- AXP20X_IRQ(PEK_RIS_EDGE, 4, 6),
-- -- AXP20X_IRQ(PEK_FAL_EDGE, 4, 5),
-- -- AXP20X_IRQ(GPIO3_INPUT, 4, 3),
-- -- AXP20X_IRQ(GPIO2_INPUT, 4, 2),
-- -- AXP20X_IRQ(GPIO1_INPUT, 4, 1),
-- -- AXP20X_IRQ(GPIO0_INPUT, 4, 0),
++ ++ INIT_REGMAP_IRQ(AXP20X, ACIN_OVER_V, 0, 7),
++ ++ INIT_REGMAP_IRQ(AXP20X, ACIN_PLUGIN, 0, 6),
++ ++ INIT_REGMAP_IRQ(AXP20X, ACIN_REMOVAL, 0, 5),
++ ++ INIT_REGMAP_IRQ(AXP20X, VBUS_OVER_V, 0, 4),
++ ++ INIT_REGMAP_IRQ(AXP20X, VBUS_PLUGIN, 0, 3),
++ ++ INIT_REGMAP_IRQ(AXP20X, VBUS_REMOVAL, 0, 2),
++ ++ INIT_REGMAP_IRQ(AXP20X, VBUS_V_LOW, 0, 1),
++ ++ INIT_REGMAP_IRQ(AXP20X, BATT_PLUGIN, 1, 7),
++ ++ INIT_REGMAP_IRQ(AXP20X, BATT_REMOVAL, 1, 6),
++ ++ INIT_REGMAP_IRQ(AXP20X, BATT_ENT_ACT_MODE, 1, 5),
++ ++ INIT_REGMAP_IRQ(AXP20X, BATT_EXIT_ACT_MODE, 1, 4),
++ ++ INIT_REGMAP_IRQ(AXP20X, CHARG, 1, 3),
++ ++ INIT_REGMAP_IRQ(AXP20X, CHARG_DONE, 1, 2),
++ ++ INIT_REGMAP_IRQ(AXP20X, BATT_TEMP_HIGH, 1, 1),
++ ++ INIT_REGMAP_IRQ(AXP20X, BATT_TEMP_LOW, 1, 0),
++ ++ INIT_REGMAP_IRQ(AXP20X, DIE_TEMP_HIGH, 2, 7),
++ ++ INIT_REGMAP_IRQ(AXP20X, CHARG_I_LOW, 2, 6),
++ ++ INIT_REGMAP_IRQ(AXP20X, DCDC1_V_LONG, 2, 5),
++ ++ INIT_REGMAP_IRQ(AXP20X, DCDC2_V_LONG, 2, 4),
++ ++ INIT_REGMAP_IRQ(AXP20X, DCDC3_V_LONG, 2, 3),
++ ++ INIT_REGMAP_IRQ(AXP20X, PEK_SHORT, 2, 1),
++ ++ INIT_REGMAP_IRQ(AXP20X, PEK_LONG, 2, 0),
++ ++ INIT_REGMAP_IRQ(AXP20X, N_OE_PWR_ON, 3, 7),
++ ++ INIT_REGMAP_IRQ(AXP20X, N_OE_PWR_OFF, 3, 6),
++ ++ INIT_REGMAP_IRQ(AXP20X, VBUS_VALID, 3, 5),
++ ++ INIT_REGMAP_IRQ(AXP20X, VBUS_NOT_VALID, 3, 4),
++ ++ INIT_REGMAP_IRQ(AXP20X, VBUS_SESS_VALID, 3, 3),
++ ++ INIT_REGMAP_IRQ(AXP20X, VBUS_SESS_END, 3, 2),
++ ++ INIT_REGMAP_IRQ(AXP20X, LOW_PWR_LVL1, 3, 1),
++ ++ INIT_REGMAP_IRQ(AXP20X, LOW_PWR_LVL2, 3, 0),
++ ++ INIT_REGMAP_IRQ(AXP20X, TIMER, 4, 7),
++ ++ INIT_REGMAP_IRQ(AXP20X, PEK_RIS_EDGE, 4, 6),
++ ++ INIT_REGMAP_IRQ(AXP20X, PEK_FAL_EDGE, 4, 5),
++ ++ INIT_REGMAP_IRQ(AXP20X, GPIO3_INPUT, 4, 3),
++ ++ INIT_REGMAP_IRQ(AXP20X, GPIO2_INPUT, 4, 2),
++ ++ INIT_REGMAP_IRQ(AXP20X, GPIO1_INPUT, 4, 1),
++ ++ INIT_REGMAP_IRQ(AXP20X, GPIO0_INPUT, 4, 0),
++ ++};
++ ++
++ ++/* some IRQs are compatible with axp20x models */
++ ++static const struct regmap_irq axp288_regmap_irqs[] = {
++ ++ INIT_REGMAP_IRQ(AXP288, VBUS_FALL, 0, 2),
++ ++ INIT_REGMAP_IRQ(AXP288, VBUS_RISE, 0, 3),
++ ++ INIT_REGMAP_IRQ(AXP288, OV, 0, 4),
++ ++
++ ++ INIT_REGMAP_IRQ(AXP288, DONE, 1, 2),
++ ++ INIT_REGMAP_IRQ(AXP288, CHARGING, 1, 3),
++ ++ INIT_REGMAP_IRQ(AXP288, SAFE_QUIT, 1, 4),
++ ++ INIT_REGMAP_IRQ(AXP288, SAFE_ENTER, 1, 5),
++ ++ INIT_REGMAP_IRQ(AXP288, ABSENT, 1, 6),
++ ++ INIT_REGMAP_IRQ(AXP288, APPEND, 1, 7),
++ ++
++ ++ INIT_REGMAP_IRQ(AXP288, QWBTU, 2, 0),
++ ++ INIT_REGMAP_IRQ(AXP288, WBTU, 2, 1),
++ ++ INIT_REGMAP_IRQ(AXP288, QWBTO, 2, 2),
++ ++ INIT_REGMAP_IRQ(AXP288, WBTO, 2, 3),
++ ++ INIT_REGMAP_IRQ(AXP288, QCBTU, 2, 4),
++ ++ INIT_REGMAP_IRQ(AXP288, CBTU, 2, 5),
++ ++ INIT_REGMAP_IRQ(AXP288, QCBTO, 2, 6),
++ ++ INIT_REGMAP_IRQ(AXP288, CBTO, 2, 7),
++ ++
++ ++ INIT_REGMAP_IRQ(AXP288, WL2, 3, 0),
++ ++ INIT_REGMAP_IRQ(AXP288, WL1, 3, 1),
++ ++ INIT_REGMAP_IRQ(AXP288, GPADC, 3, 2),
++ ++ INIT_REGMAP_IRQ(AXP288, OT, 3, 7),
++ ++
++ ++ INIT_REGMAP_IRQ(AXP288, GPIO0, 4, 0),
++ ++ INIT_REGMAP_IRQ(AXP288, GPIO1, 4, 1),
++ ++ INIT_REGMAP_IRQ(AXP288, POKO, 4, 2),
++ ++ INIT_REGMAP_IRQ(AXP288, POKL, 4, 3),
++ ++ INIT_REGMAP_IRQ(AXP288, POKS, 4, 4),
++ ++ INIT_REGMAP_IRQ(AXP288, POKN, 4, 5),
++ ++ INIT_REGMAP_IRQ(AXP288, POKP, 4, 6),
++ ++ INIT_REGMAP_IRQ(AXP288, TIMER, 4, 7),
++ ++
++ ++ INIT_REGMAP_IRQ(AXP288, MV_CHNG, 5, 0),
++ ++ INIT_REGMAP_IRQ(AXP288, BC_USB_CHNG, 5, 1),
};
static const struct of_device_id axp20x_of_match[] = {
};
MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
++ ++static struct acpi_device_id axp20x_acpi_match[] = {
++ ++ {
++ ++ .id = "INT33F4",
++ ++ .driver_data = AXP288_ID,
++ ++ },
++ ++ { },
++ ++};
++ ++MODULE_DEVICE_TABLE(acpi, axp20x_acpi_match);
++ ++
static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
.name = "axp20x_irq_chip",
.status_base = AXP20X_IRQ1_STATE,
.ack_base = AXP20X_IRQ1_STATE,
.mask_base = AXP20X_IRQ1_EN,
-- -- .num_regs = 5,
++ ++ .mask_invert = true,
++ ++ .init_ack_masked = true,
.irqs = axp20x_regmap_irqs,
.num_irqs = ARRAY_SIZE(axp20x_regmap_irqs),
++ ++ .num_regs = 5,
++ ++
++ ++};
++ ++
++ ++static const struct regmap_irq_chip axp288_regmap_irq_chip = {
++ ++ .name = "axp288_irq_chip",
++ ++ .status_base = AXP20X_IRQ1_STATE,
++ ++ .ack_base = AXP20X_IRQ1_STATE,
++ ++ .mask_base = AXP20X_IRQ1_EN,
.mask_invert = true,
.init_ack_masked = true,
++ ++ .irqs = axp288_regmap_irqs,
++ ++ .num_irqs = ARRAY_SIZE(axp288_regmap_irqs),
++ ++ .num_regs = 6,
++ ++
};
- static const char * const axp20x_supplies[] = {
- "acin",
- "vin2",
- "vin3",
- "ldo24in",
- "ldo3in",
- "ldo5in",
- };
-
static struct mfd_cell axp20x_cells[] = {
{
.name = "axp20x-pek",
.resources = axp20x_pek_resources,
}, {
.name = "axp20x-regulator",
- .parent_supplies = axp20x_supplies,
- .num_parent_supplies = ARRAY_SIZE(axp20x_supplies),
},
};
++ ++static struct resource axp288_adc_resources[] = {
++ ++ {
++ ++ .name = "GPADC",
++ ++ .start = AXP288_IRQ_GPADC,
++ ++ .end = AXP288_IRQ_GPADC,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++};
++ ++
++ ++static struct resource axp288_charger_resources[] = {
++ ++ {
++ ++ .start = AXP288_IRQ_OV,
++ ++ .end = AXP288_IRQ_OV,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_DONE,
++ ++ .end = AXP288_IRQ_DONE,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_CHARGING,
++ ++ .end = AXP288_IRQ_CHARGING,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_SAFE_QUIT,
++ ++ .end = AXP288_IRQ_SAFE_QUIT,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_SAFE_ENTER,
++ ++ .end = AXP288_IRQ_SAFE_ENTER,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_QCBTU,
++ ++ .end = AXP288_IRQ_QCBTU,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_CBTU,
++ ++ .end = AXP288_IRQ_CBTU,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_QCBTO,
++ ++ .end = AXP288_IRQ_QCBTO,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++ {
++ ++ .start = AXP288_IRQ_CBTO,
++ ++ .end = AXP288_IRQ_CBTO,
++ ++ .flags = IORESOURCE_IRQ,
++ ++ },
++ ++};
++ ++
++ ++static struct mfd_cell axp288_cells[] = {
++ ++ {
++ ++ .name = "axp288_adc",
++ ++ .num_resources = ARRAY_SIZE(axp288_adc_resources),
++ ++ .resources = axp288_adc_resources,
++ ++ },
++ ++ {
++ ++ .name = "axp288_charger",
++ ++ .num_resources = ARRAY_SIZE(axp288_charger_resources),
++ ++ .resources = axp288_charger_resources,
++ ++ },
++ ++ {
++ ++ .name = "axp288_battery",
++ ++ .num_resources = ARRAY_SIZE(axp288_battery_resources),
++ ++ .resources = axp288_battery_resources,
++ ++ },
++ ++};
++ ++
static struct axp20x_dev *axp20x_pm_power_off;
static void axp20x_power_off(void)
{
++ ++ if (axp20x_pm_power_off->variant == AXP288_ID)
++ ++ return;
++ ++
regmap_write(axp20x_pm_power_off->regmap, AXP20X_OFF_CTRL,
AXP20X_OFF);
}
++ ++static int axp20x_match_device(struct axp20x_dev *axp20x, struct device *dev)
++ ++{
++ ++ const struct acpi_device_id *acpi_id;
++ ++ const struct of_device_id *of_id;
++ ++
++ ++ if (dev->of_node) {
++ ++ of_id = of_match_device(axp20x_of_match, dev);
++ ++ if (!of_id) {
++ ++ dev_err(dev, "Unable to match OF ID\n");
++ ++ return -ENODEV;
++ ++ }
++ ++ axp20x->variant = (long) of_id->data;
++ ++ } else {
++ ++ acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev);
++ ++ if (!acpi_id || !acpi_id->driver_data) {
++ ++ dev_err(dev, "Unable to match ACPI ID and data\n");
++ ++ return -ENODEV;
++ ++ }
++ ++ axp20x->variant = (long) acpi_id->driver_data;
++ ++ }
++ ++
++ ++ switch (axp20x->variant) {
++ ++ case AXP202_ID:
++ ++ case AXP209_ID:
++ ++ axp20x->nr_cells = ARRAY_SIZE(axp20x_cells);
++ ++ axp20x->cells = axp20x_cells;
++ ++ axp20x->regmap_cfg = &axp20x_regmap_config;
++ ++ axp20x->regmap_irq_chip = &axp20x_regmap_irq_chip;
++ ++ break;
++ ++ case AXP288_ID:
++ ++ axp20x->cells = axp288_cells;
++ ++ axp20x->nr_cells = ARRAY_SIZE(axp288_cells);
++ ++ axp20x->regmap_cfg = &axp288_regmap_config;
++ ++ axp20x->regmap_irq_chip = &axp288_regmap_irq_chip;
++ ++ break;
++ ++ default:
++ ++ dev_err(dev, "unsupported AXP20X ID %lu\n", axp20x->variant);
++ ++ return -EINVAL;
++ ++ }
++ ++ dev_info(dev, "AXP20x variant %s found\n",
++ ++ axp20x_model_names[axp20x->variant]);
++ ++
++ ++ return 0;
++ ++}
++ ++
static int axp20x_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct axp20x_dev *axp20x;
-- -- const struct of_device_id *of_id;
int ret;
axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);
if (!axp20x)
return -ENOMEM;
-- -- of_id = of_match_device(axp20x_of_match, &i2c->dev);
-- -- if (!of_id) {
-- -- dev_err(&i2c->dev, "Unable to setup AXP20X data\n");
-- -- return -ENODEV;
-- -- }
-- -- axp20x->variant = (long) of_id->data;
++ ++ ret = axp20x_match_device(axp20x, &i2c->dev);
++ ++ if (ret)
++ ++ return ret;
axp20x->i2c_client = i2c;
axp20x->dev = &i2c->dev;
dev_set_drvdata(axp20x->dev, axp20x);
-- -- axp20x->regmap = devm_regmap_init_i2c(i2c, &axp20x_regmap_config);
++ ++ axp20x->regmap = devm_regmap_init_i2c(i2c, axp20x->regmap_cfg);
if (IS_ERR(axp20x->regmap)) {
ret = PTR_ERR(axp20x->regmap);
dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
ret = regmap_add_irq_chip(axp20x->regmap, i2c->irq,
IRQF_ONESHOT | IRQF_SHARED, -1,
-- -- &axp20x_regmap_irq_chip,
++ ++ axp20x->regmap_irq_chip,
&axp20x->regmap_irqc);
if (ret) {
dev_err(&i2c->dev, "failed to add irq chip: %d\n", ret);
return ret;
}
-- -- ret = mfd_add_devices(axp20x->dev, -1, axp20x_cells,
-- -- ARRAY_SIZE(axp20x_cells), NULL, 0, NULL);
++ ++ ret = mfd_add_devices(axp20x->dev, -1, axp20x->cells,
++ ++ axp20x->nr_cells, NULL, 0, NULL);
if (ret) {
dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret);
.name = "axp20x",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(axp20x_of_match),
++ ++ .acpi_match_table = ACPI_PTR(axp20x_acpi_match),
},
.probe = axp20x_i2c_probe,
.remove = axp20x_i2c_remove,