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sensor: lis2dh: cache CTRL1 on PM_DEVICE_ACTION_TURN_ON

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Cache CTRL1 into reg_ctrl1_active_val inside lis2dh_init_chip()
in the PM_DEVICE_ACTION_TURN_ON path.  This prevents the first
runtime-PM RESUME from writing 0x00 to CTRL1 and disabling the sensor
when runtime-PM is enabled.

Fixes: #92196

Signed-off-by: Van Petrosyan <van.petrosyan@sensirion.com>
This commit is contained in:
Van Petrosyan 2025-07-02 14:54:01 +02:00 committed by Daniel DeGrasse
parent 7da64e7bda
commit 960a6f036e
1 changed files with 5 additions and 6 deletions
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11
drivers/sensor/st/lis2dh/lis2dh.c
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@ -439,9 +439,8 @@ int lis2dh_init_chip(const struct device *dev)
(uint8_t)LIS2DH_LP_EN_BIT, lis2dh->scale);
/* enable accel measurements and set power mode and data rate */
return lis2dh->hw_tf->write_reg(dev, LIS2DH_REG_CTRL1,
LIS2DH_ACCEL_EN_BITS | LIS2DH_LP_EN_BIT |
LIS2DH_ODR_BITS);
lis2dh->reg_ctrl1_active_val = LIS2DH_ACCEL_EN_BITS | LIS2DH_LP_EN_BIT | LIS2DH_ODR_BITS;
return lis2dh->hw_tf->write_reg(dev, LIS2DH_REG_CTRL1, lis2dh->reg_ctrl1_active_val);
}
static int lis2dh_pm_action(const struct device *dev,
@ -467,7 +466,7 @@ static int lis2dh_pm_action(const struct device *dev,
status = lis2dh->hw_tf->write_reg(dev, LIS2DH_REG_CTRL1,
lis2dh->reg_ctrl1_active_val);
if (status < 0) {
LOG_ERR("failed to write reg_crtl1");
LOG_ERR("failed to write reg_ctrl1");
return status;
}
break;
@ -476,13 +475,13 @@ static int lis2dh_pm_action(const struct device *dev,
status = lis2dh->hw_tf->read_reg(dev, LIS2DH_REG_CTRL1,
&lis2dh->reg_ctrl1_active_val);
if (status < 0) {
LOG_ERR("failed to read reg_crtl1");
LOG_ERR("failed to read reg_ctrl1");
return status;
}
status = lis2dh->hw_tf->write_reg(dev, LIS2DH_REG_CTRL1,
LIS2DH_SUSPEND);
if (status < 0) {
LOG_ERR("failed to write reg_crtl1");
LOG_ERR("failed to write reg_ctrl1");
return status;
}
break;