Cache the value of CTRL_REG4 in the mpl3115_data structure. This is a
preparation for adding support for the threshold events.

Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
---
 drivers/iio/pressure/mpl3115.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
index c212dfdf59ff..4cc103e20a39 100644
--- a/drivers/iio/pressure/mpl3115.c
+++ b/drivers/iio/pressure/mpl3115.c
@@ -83,6 +83,7 @@ struct mpl3115_data {
 	struct iio_trigger *drdy_trig;
 	struct mutex lock;
 	u8 ctrl_reg1;
+	u8 ctrl_reg4;
 };
 
 enum mpl3115_irq_pin {
@@ -376,6 +377,7 @@ static int mpl3115_config_interrupt(struct mpl3115_data *data,
 		goto reg1_cleanup;
 
 	data->ctrl_reg1 = ctrl_reg1;
+	data->ctrl_reg4 = ctrl_reg4;
 
 	return 0;
 
@@ -390,12 +392,15 @@ static int mpl3115_set_trigger_state(struct iio_trigger *trig, bool state)
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 	struct mpl3115_data *data = iio_priv(indio_dev);
 	u8 ctrl_reg1 = data->ctrl_reg1;
-	u8 ctrl_reg4 = state ? MPL3115_CTRL4_INT_EN_DRDY : 0;
+	u8 ctrl_reg4 = data->ctrl_reg4;
 
-	if (state)
+	if (state) {
 		ctrl_reg1 |= MPL3115_CTRL1_ACTIVE;
-	else
+		ctrl_reg4 |= MPL3115_CTRL4_INT_EN_DRDY;
+	} else {
 		ctrl_reg1 &= ~MPL3115_CTRL1_ACTIVE;
+		ctrl_reg4 &= ~MPL3115_CTRL4_INT_EN_DRDY;
+	}
 
 	guard(mutex)(&data->lock);
 
-- 
2.25.1

Hi Antoni,

The patch itself looks good to me.
I just wonder if it would make more sense to squash it with patch 2 since part
of the code here is changed again in that patch (the mpl3115_set_trigger_state()).

On 10/28, Antoni Pokusinski wrote:
> Cache the value of CTRL_REG4 in the mpl3115_data structure. This is a
> preparation for adding support for the threshold events.
> 
> Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
> ---
>  drivers/iio/pressure/mpl3115.c | 11 ++++++++---
>  1 file changed, 8 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
> index c212dfdf59ff..4cc103e20a39 100644
> --- a/drivers/iio/pressure/mpl3115.c
> +++ b/drivers/iio/pressure/mpl3115.c
> @@ -83,6 +83,7 @@ struct mpl3115_data {
>  	struct iio_trigger *drdy_trig;
>  	struct mutex lock;
>  	u8 ctrl_reg1;
> +	u8 ctrl_reg4;
I think this ...

>  };
>  
>  enum mpl3115_irq_pin {
> @@ -376,6 +377,7 @@ static int mpl3115_config_interrupt(struct mpl3115_data *data,
>  		goto reg1_cleanup;
>  
>  	data->ctrl_reg1 = ctrl_reg1;
> +	data->ctrl_reg4 = ctrl_reg4;
>  
>  	return 0;
>  
> @@ -390,12 +392,15 @@ static int mpl3115_set_trigger_state(struct iio_trigger *trig, bool state)
>  	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
>  	struct mpl3115_data *data = iio_priv(indio_dev);
>  	u8 ctrl_reg1 = data->ctrl_reg1;
> -	u8 ctrl_reg4 = state ? MPL3115_CTRL4_INT_EN_DRDY : 0;
> +	u8 ctrl_reg4 = data->ctrl_reg4;
and also this is changed again in patch 2.

I don't see much advantage in having it separated from patch 2.
Might be simpler to just squash patch 1 and 2.
>  
> -	if (state)
> +	if (state) {
>  		ctrl_reg1 |= MPL3115_CTRL1_ACTIVE;
> -	else
> +		ctrl_reg4 |= MPL3115_CTRL4_INT_EN_DRDY;
> +	} else {
>  		ctrl_reg1 &= ~MPL3115_CTRL1_ACTIVE;
> +		ctrl_reg4 &= ~MPL3115_CTRL4_INT_EN_DRDY;
> +	}
>  
>  	guard(mutex)(&data->lock);
>  
> -- 
> 2.25.1
>