Commit 960a6f03 authored by Van Petrosyan's avatar Van Petrosyan Committed by Daniel DeGrasse
Browse files

sensor: lis2dh: cache CTRL1 on PM_DEVICE_ACTION_TURN_ON 



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: default avatarVan Petrosyan <van.petrosyan@sensirion.com>
parent 7da64e7b

drivers/sensor/st/lis2dh/lis2dh.c

+5 −6
Original line number Diff line number Diff line
@@ -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;

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