[PATCH 3/9] iio:adc: ad7606: Move the software mode configuration

Guillaume Stols posted 9 patches 1 year, 2 months ago
There is a newer version of this series
[PATCH 3/9] iio:adc: ad7606: Move the software mode configuration
Posted by Guillaume Stols 1 year, 2 months ago
This is a preparation for the intoduction of the sofware functions in
the iio backend version of the driver.
The software mode configuration must be executed once the channels are
configured, and the number of channels is known. This is not the case
before iio-backend's configuration is called, and iio backend version of
the driver does not have a timestamp channel.
Also the sw_mode_config callback is configured during the
iio-backend configuration.
For clarity purpose, I moved the entire block instead of just the
concerned function calls.

Signed-off-by: Guillaume Stols <gstols@baylibre.com>
---
 drivers/iio/adc/ad7606.c | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
index 893b93b86aa7..828603ed18f6 100644
--- a/drivers/iio/adc/ad7606.c
+++ b/drivers/iio/adc/ad7606.c
@@ -1246,17 +1246,6 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
 			return -ERESTARTSYS;
 	}
 
-	st->write_scale = ad7606_write_scale_hw;
-	st->write_os = ad7606_write_os_hw;
-
-	ret = ad7606_sw_mode_setup(indio_dev);
-	if (ret)
-		return ret;
-
-	ret = ad7606_chan_scales_setup(indio_dev);
-	if (ret)
-		return ret;
-
 	/* If convst pin is not defined, setup PWM. */
 	if (!st->gpio_convst) {
 		st->cnvst_pwm = devm_pwm_get(dev, NULL);
@@ -1334,6 +1323,20 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
 			return ret;
 	}
 
+	st->write_scale = ad7606_write_scale_hw;
+	st->write_os = ad7606_write_os_hw;
+
+	st->sw_mode_en = st->chip_info->sw_setup_cb &&
+			 device_property_present(st->dev, "adi,sw-mode");
+	if (st->sw_mode_en) {
+		indio_dev->info = &ad7606_info_sw_mode;
+		st->chip_info->sw_setup_cb(indio_dev);
+	}
+
+	ret = ad7606_chan_scales_setup(indio_dev);
+	if (ret)
+		return ret;
+
 	return devm_iio_device_register(dev, indio_dev);
 }
 EXPORT_SYMBOL_NS_GPL(ad7606_probe, IIO_AD7606);

-- 
2.34.1
Re: [PATCH 3/9] iio:adc: ad7606: Move the software mode configuration
Posted by Jonathan Cameron 1 year, 2 months ago
On Thu, 21 Nov 2024 10:18:25 +0000
Guillaume Stols <gstols@baylibre.com> wrote:

> This is a preparation for the intoduction of the sofware functions in
> the iio backend version of the driver.
> The software mode configuration must be executed once the channels are
> configured, and the number of channels is known. This is not the case
> before iio-backend's configuration is called, and iio backend version of
> the driver does not have a timestamp channel.
> Also the sw_mode_config callback is configured during the
> iio-backend configuration.
> For clarity purpose, I moved the entire block instead of just the
> concerned function calls.
> 
> Signed-off-by: Guillaume Stols <gstols@baylibre.com>
> ---
>  drivers/iio/adc/ad7606.c | 25 ++++++++++++++-----------
>  1 file changed, 14 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
> index 893b93b86aa7..828603ed18f6 100644
> --- a/drivers/iio/adc/ad7606.c
> +++ b/drivers/iio/adc/ad7606.c
> @@ -1246,17 +1246,6 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
>  			return -ERESTARTSYS;
>  	}
>  
> -	st->write_scale = ad7606_write_scale_hw;
> -	st->write_os = ad7606_write_os_hw;
> -
> -	ret = ad7606_sw_mode_setup(indio_dev);
Isn't this the only call to this function?

> -	if (ret)
> -		return ret;
> -
> -	ret = ad7606_chan_scales_setup(indio_dev);
> -	if (ret)
> -		return ret;
> -
>  	/* If convst pin is not defined, setup PWM. */
>  	if (!st->gpio_convst) {
>  		st->cnvst_pwm = devm_pwm_get(dev, NULL);
> @@ -1334,6 +1323,20 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
>  			return ret;
>  	}
>  
> +	st->write_scale = ad7606_write_scale_hw;
> +	st->write_os = ad7606_write_os_hw;
> +
> +	st->sw_mode_en = st->chip_info->sw_setup_cb &&
> +			 device_property_present(st->dev, "adi,sw-mode");
> +	if (st->sw_mode_en) {
> +		indio_dev->info = &ad7606_info_sw_mode;
> +		st->chip_info->sw_setup_cb(indio_dev);

Where did this callback come from?

Looks like this and the next patch need tidying up so each does
one distinct thing.

> +	}
> +
> +	ret = ad7606_chan_scales_setup(indio_dev);
> +	if (ret)
> +		return ret;
> +
>  	return devm_iio_device_register(dev, indio_dev);
>  }
>  EXPORT_SYMBOL_NS_GPL(ad7606_probe, IIO_AD7606);
>