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iio: accel: adxl380: Introduce helper function for activity detection

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Motion detection functionalities (such as activity and inactivity
detection) are only available when the chip is in a low-power mode; this
affects the available sampling frequency values.
In preparation for adding support for a new frequency value, introduce a
helper function that checks whether activity/inactivity detection is
currently enabled; this function will be reused in a future commit to
determine what frequency values are available at any given time.
No functional changes.

Signed-off-by: Francesco Lavra <flavra@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Francesco Lavra 2026-01-15 18:53:49 +01:00 committed by Jonathan Cameron
parent a99b000f92
commit fabae75587
1 changed files with 24 additions and 5 deletions
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29
drivers/iio/accel/adxl380.c
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@ -232,14 +232,35 @@ bool adxl380_readable_noinc_reg(struct device *dev, unsigned int reg)
}
EXPORT_SYMBOL_NS_GPL(adxl380_readable_noinc_reg, "IIO_ADXL380");
static int adxl380_act_inact_enabled(struct adxl380_state *st, bool *enabled)
{
unsigned int act_inact_ctl;
int ret;
if (!st->chip_info->has_low_power) {
*enabled = false;
return 0;
}
ret = regmap_read(st->regmap, ADXL380_ACT_INACT_CTL_REG, &act_inact_ctl);
if (ret)
return ret;
*enabled = FIELD_GET(ADXL380_ACT_EN_MSK, act_inact_ctl) ||
FIELD_GET(ADXL380_INACT_EN_MSK, act_inact_ctl);
return 0;
}
static int adxl380_set_measure_en(struct adxl380_state *st, bool en)
{
int ret;
unsigned int act_inact_ctl;
u8 op_mode = ADXL380_OP_MODE_STANDBY;
if (en) {
ret = regmap_read(st->regmap, ADXL380_ACT_INACT_CTL_REG, &act_inact_ctl);
bool act_inact_enabled;
ret = adxl380_act_inact_enabled(st, &act_inact_enabled);
if (ret)
return ret;
@ -248,9 +269,7 @@ static int adxl380_set_measure_en(struct adxl380_state *st, bool en)
* mode and for devices that support low power modes. Otherwise
* go straight to measure mode (same bits as ADXL380_OP_MODE_HP).
*/
if (st->chip_info->has_low_power &&
(FIELD_GET(ADXL380_ACT_EN_MSK, act_inact_ctl) ||
FIELD_GET(ADXL380_INACT_EN_MSK, act_inact_ctl)))
if (act_inact_enabled)
op_mode = ADXL380_OP_MODE_VLP;
else
op_mode = ADXL380_OP_MODE_HP;