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drivers: lis2dh: read reference register prior to wakeup

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Fixes #71371

Signed-off-by: Juliane Schulze <juliane.schulze@deveritec.com>
This commit is contained in:
Juliane Schulze 2024-04-11 10:31:27 +02:00 • committed by Alberto Escolar
commit ca92f96f41
1 changed files with 8 additions and 0 deletions
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8
drivers/sensor/st/lis2dh/lis2dh.c
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@ -437,9 +437,17 @@ static int lis2dh_pm_action(const struct device *dev,
{ {
int status; int status;
struct lis2dh_data *lis2dh = dev->data; struct lis2dh_data *lis2dh = dev->data;
uint8_t regdata;
switch (action) { switch (action) {
case PM_DEVICE_ACTION_RESUME: case PM_DEVICE_ACTION_RESUME:
/* read REFERENCE register (see datasheet rev 6 section 8.9 footnote 1) */
status = lis2dh->hw_tf->read_reg(dev, LIS2DH_REG_REFERENCE, &regdata);
if (status < 0) {
LOG_ERR("failed to read reg_reference");
return status;
}
/* Resume previous mode. */ /* Resume previous mode. */
status = lis2dh->hw_tf->write_reg(dev, LIS2DH_REG_CTRL1, status = lis2dh->hw_tf->write_reg(dev, LIS2DH_REG_CTRL1,
lis2dh->reg_ctrl1_active_val); lis2dh->reg_ctrl1_active_val);