[PATCH 1/2] iio: adc: ad4130: zero-initialize clock init data

[PATCH 1/2] iio: adc: ad4130: zero-initialize clock init data

[Cosmin Tanislav]

The clk_init_data struct does not have all its members
initialized, causing issues when trying to expose the internal
clock on the CLK pin.

Fix this by zero-initializing the clk_init_data struct.

Fixes: 62094060cf3a ("iio: adc: ad4130: add AD4130 driver")
Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com>
---
 drivers/iio/adc/ad4130.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/ad4130.c b/drivers/iio/adc/ad4130.c
index 53e19a863198..c7df499f9775 100644
--- a/drivers/iio/adc/ad4130.c
+++ b/drivers/iio/adc/ad4130.c
@@ -1794,7 +1794,7 @@ static int ad4130_setup_int_clk(struct ad4130_state *st)
 {
 	struct device *dev = &st->spi->dev;
 	struct device_node *of_node = dev_of_node(dev);
-	struct clk_init_data init;
+	struct clk_init_data init = {};
 	const char *clk_name;
 	int ret;
 
-- 
2.43.0

[PATCH 2/2] iio: adc: ad4130: only set GPIO_CTRL if pin is unused

[Cosmin Tanislav]

Currently, GPIO_CTRL bits are set even if the pins are used for
measurements.

GPIO_CTRL bits should only be set if the pin is not used for
other functionality.

Fix this by only setting the GPIO_CTRL bits if the pin has no
other function.

Fixes: 62094060cf3a ("iio: adc: ad4130: add AD4130 driver")
Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com>
---
 drivers/iio/adc/ad4130.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/adc/ad4130.c b/drivers/iio/adc/ad4130.c
index c7df499f9775..febb64e67955 100644
--- a/drivers/iio/adc/ad4130.c
+++ b/drivers/iio/adc/ad4130.c
@@ -1864,10 +1864,14 @@ static int ad4130_setup(struct iio_dev *indio_dev)
 		return ret;
 
 	/*
-	 * Configure all GPIOs for output. If configured, the interrupt function
-	 * of P2 takes priority over the GPIO out function.
+	 * Configure unused GPIOs for output. If configured, the interrupt
+	 * function of P2 takes priority over the GPIO out function.
 	 */
-	val =  AD4130_IO_CONTROL_GPIO_CTRL_MASK;
+	val = 0;
+	for (i = 0; i < AD4130_MAX_GPIOS; i++)
+		if (st->pins_fn[i + AD4130_AIN2_P1] == AD4130_PIN_FN_NONE)
+			val |= FIELD_PREP(AD4130_IO_CONTROL_GPIO_CTRL_MASK, BIT(i));
+
 	val |= FIELD_PREP(AD4130_IO_CONTROL_INT_PIN_SEL_MASK, st->int_pin_sel);
 
 	ret = regmap_write(st->regmap, AD4130_IO_CONTROL_REG, val);
-- 
2.43.0

Re: [PATCH 2/2] iio: adc: ad4130: only set GPIO_CTRL if pin is unused

[Nuno Sá]

On Wed, 2024-02-07 at 15:20 +0200, Cosmin Tanislav wrote:
> Currently, GPIO_CTRL bits are set even if the pins are used for
> measurements.
> 
> GPIO_CTRL bits should only be set if the pin is not used for
> other functionality.
> 
> Fix this by only setting the GPIO_CTRL bits if the pin has no
> other function.
> 
> Fixes: 62094060cf3a ("iio: adc: ad4130: add AD4130 driver")
> Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com>
> ---

Reviewed-by: Nuno Sa <nuno.sa@analog.com>

>  drivers/iio/adc/ad4130.c | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/iio/adc/ad4130.c b/drivers/iio/adc/ad4130.c
> index c7df499f9775..febb64e67955 100644
> --- a/drivers/iio/adc/ad4130.c
> +++ b/drivers/iio/adc/ad4130.c
> @@ -1864,10 +1864,14 @@ static int ad4130_setup(struct iio_dev *indio_dev)
>  		return ret;
>  
>  	/*
> -	 * Configure all GPIOs for output. If configured, the interrupt
> function
> -	 * of P2 takes priority over the GPIO out function.
> +	 * Configure unused GPIOs for output. If configured, the interrupt
> +	 * function of P2 takes priority over the GPIO out function.
>  	 */
> -	val =  AD4130_IO_CONTROL_GPIO_CTRL_MASK;
> +	val = 0;
> +	for (i = 0; i < AD4130_MAX_GPIOS; i++)
> +		if (st->pins_fn[i + AD4130_AIN2_P1] == AD4130_PIN_FN_NONE)
> +			val |= FIELD_PREP(AD4130_IO_CONTROL_GPIO_CTRL_MASK,
> BIT(i));
> +
>  	val |= FIELD_PREP(AD4130_IO_CONTROL_INT_PIN_SEL_MASK, st-
> >int_pin_sel);
>  
>  	ret = regmap_write(st->regmap, AD4130_IO_CONTROL_REG, val);

Re: [PATCH 1/2] iio: adc: ad4130: zero-initialize clock init data

[Nuno Sá]

On Wed, 2024-02-07 at 15:20 +0200, Cosmin Tanislav wrote:
> The clk_init_data struct does not have all its members
> initialized, causing issues when trying to expose the internal
> clock on the CLK pin.
> 
> Fix this by zero-initializing the clk_init_data struct.
> 
> Fixes: 62094060cf3a ("iio: adc: ad4130: add AD4130 driver")
> Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com>
> ---

Reviewed-by: Nuno Sa <nuno.sa@analog.com>

>  drivers/iio/adc/ad4130.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/ad4130.c b/drivers/iio/adc/ad4130.c
> index 53e19a863198..c7df499f9775 100644
> --- a/drivers/iio/adc/ad4130.c
> +++ b/drivers/iio/adc/ad4130.c
> @@ -1794,7 +1794,7 @@ static int ad4130_setup_int_clk(struct ad4130_state *st)
>  {
>  	struct device *dev = &st->spi->dev;
>  	struct device_node *of_node = dev_of_node(dev);
> -	struct clk_init_data init;
> +	struct clk_init_data init = {};
>  	const char *clk_name;
>  	int ret;
>  

Re: [PATCH 1/2] iio: adc: ad4130: zero-initialize clock init data

[Jonathan Cameron]

On Thu, 08 Feb 2024 09:15:08 +0100
Nuno Sá <noname.nuno@gmail.com> wrote:

> On Wed, 2024-02-07 at 15:20 +0200, Cosmin Tanislav wrote:
> > The clk_init_data struct does not have all its members
> > initialized, causing issues when trying to expose the internal
> > clock on the CLK pin.
> > 
> > Fix this by zero-initializing the clk_init_data struct.
> > 
> > Fixes: 62094060cf3a ("iio: adc: ad4130: add AD4130 driver")
> > Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com>
> > ---  
> 
> Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Both applied to the fixes-togreg branch of iio.git.

Thanks,

Jonathan

> 
> >  drivers/iio/adc/ad4130.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/iio/adc/ad4130.c b/drivers/iio/adc/ad4130.c
> > index 53e19a863198..c7df499f9775 100644
> > --- a/drivers/iio/adc/ad4130.c
> > +++ b/drivers/iio/adc/ad4130.c
> > @@ -1794,7 +1794,7 @@ static int ad4130_setup_int_clk(struct ad4130_state *st)
> >  {
> >  	struct device *dev = &st->spi->dev;
> >  	struct device_node *of_node = dev_of_node(dev);
> > -	struct clk_init_data init;
> > +	struct clk_init_data init = {};
> >  	const char *clk_name;
> >  	int ret;
> >    
>