[v6,1/3] iio: chemical: atlas-sensor: allow probe without interrupt line
diff mbox series

Message ID 20200210001058.7515-2-matt.ranostay@konsulko.com
State New
Headers show
Series
  • iio: chemical: atlas-sensor: add DO support
Related show

Commit Message

Matt Ranostay Feb. 10, 2020, 12:10 a.m. UTC
Sensors don't actually need a interrupt line to give valid readings,
and can triggered with CONFIG_IIO_HRTIMER_TRIGGER as well. Remove
the required check for interrupt, and continue along in the probe
function.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
---
 drivers/iio/chemical/atlas-sensor.c | 27 ++++++++++++---------------
 1 file changed, 12 insertions(+), 15 deletions(-)

Comments

Jonathan Cameron Feb. 14, 2020, 2:24 p.m. UTC | #1
On Sun,  9 Feb 2020 16:10:56 -0800
Matt Ranostay <matt.ranostay@konsulko.com> wrote:

> Sensors don't actually need a interrupt line to give valid readings,
> and can triggered with CONFIG_IIO_HRTIMER_TRIGGER as well. Remove
> the required check for interrupt, and continue along in the probe
> function.
> 
> Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>

Hi Matt,

I'm going to hold this for conclusion of the discussion about whether
the interrupt enable / disable should be related to the buffer or the trigger.
(v4 I think...)

Thanks,

Jonathan

> ---
>  drivers/iio/chemical/atlas-sensor.c | 27 ++++++++++++---------------
>  1 file changed, 12 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/iio/chemical/atlas-sensor.c b/drivers/iio/chemical/atlas-sensor.c
> index 2f0a6fed2589..9a1ab9f8fcc5 100644
> --- a/drivers/iio/chemical/atlas-sensor.c
> +++ b/drivers/iio/chemical/atlas-sensor.c
> @@ -572,11 +572,6 @@ static int atlas_probe(struct i2c_client *client,
>  	if (ret)
>  		return ret;
>  
> -	if (client->irq <= 0) {
> -		dev_err(&client->dev, "no valid irq defined\n");
> -		return -EINVAL;
> -	}
> -
>  	ret = chip->calibration(data);
>  	if (ret)
>  		return ret;
> @@ -596,16 +591,18 @@ static int atlas_probe(struct i2c_client *client,
>  
>  	init_irq_work(&data->work, atlas_work_handler);
>  
> -	/* interrupt pin toggles on new conversion */
> -	ret = devm_request_threaded_irq(&client->dev, client->irq,
> -					NULL, atlas_interrupt_handler,
> -					IRQF_TRIGGER_RISING |
> -					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
> -					"atlas_irq",
> -					indio_dev);
> -	if (ret) {
> -		dev_err(&client->dev, "request irq (%d) failed\n", client->irq);
> -		goto unregister_buffer;
> +	if (client->irq > 0) {
> +		/* interrupt pin toggles on new conversion */
> +		ret = devm_request_threaded_irq(&client->dev, client->irq,
> +				NULL, atlas_interrupt_handler,
> +				IRQF_TRIGGER_RISING |
> +				IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
> +				"atlas_irq",
> +				indio_dev);
> +
> +		if (ret)
> +			dev_warn(&client->dev,
> +				"request irq (%d) failed\n", client->irq);
>  	}
>  
>  	ret = atlas_set_powermode(data, 1);
Matt Ranostay Feb. 15, 2020, 10:43 p.m. UTC | #2
On Fri, Feb 14, 2020 at 6:24 AM Jonathan Cameron <jic23@kernel.org> wrote:
>
> On Sun,  9 Feb 2020 16:10:56 -0800
> Matt Ranostay <matt.ranostay@konsulko.com> wrote:
>
> > Sensors don't actually need a interrupt line to give valid readings,
> > and can triggered with CONFIG_IIO_HRTIMER_TRIGGER as well. Remove
> > the required check for interrupt, and continue along in the probe
> > function.
> >
> > Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
>
> Hi Matt,
>
> I'm going to hold this for conclusion of the discussion about whether
> the interrupt enable / disable should be related to the buffer or the trigger.
> (v4 I think...)
>

Ah yes reading that thread now and think I understand what needs to be changed.
However the rest of the series can be merged on its own without any issues.

- Matt

> Thanks,
>
> Jonathan
>
> > ---
> >  drivers/iio/chemical/atlas-sensor.c | 27 ++++++++++++---------------
> >  1 file changed, 12 insertions(+), 15 deletions(-)
> >
> > diff --git a/drivers/iio/chemical/atlas-sensor.c b/drivers/iio/chemical/atlas-sensor.c
> > index 2f0a6fed2589..9a1ab9f8fcc5 100644
> > --- a/drivers/iio/chemical/atlas-sensor.c
> > +++ b/drivers/iio/chemical/atlas-sensor.c
> > @@ -572,11 +572,6 @@ static int atlas_probe(struct i2c_client *client,
> >       if (ret)
> >               return ret;
> >
> > -     if (client->irq <= 0) {
> > -             dev_err(&client->dev, "no valid irq defined\n");
> > -             return -EINVAL;
> > -     }
> > -
> >       ret = chip->calibration(data);
> >       if (ret)
> >               return ret;
> > @@ -596,16 +591,18 @@ static int atlas_probe(struct i2c_client *client,
> >
> >       init_irq_work(&data->work, atlas_work_handler);
> >
> > -     /* interrupt pin toggles on new conversion */
> > -     ret = devm_request_threaded_irq(&client->dev, client->irq,
> > -                                     NULL, atlas_interrupt_handler,
> > -                                     IRQF_TRIGGER_RISING |
> > -                                     IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
> > -                                     "atlas_irq",
> > -                                     indio_dev);
> > -     if (ret) {
> > -             dev_err(&client->dev, "request irq (%d) failed\n", client->irq);
> > -             goto unregister_buffer;
> > +     if (client->irq > 0) {
> > +             /* interrupt pin toggles on new conversion */
> > +             ret = devm_request_threaded_irq(&client->dev, client->irq,
> > +                             NULL, atlas_interrupt_handler,
> > +                             IRQF_TRIGGER_RISING |
> > +                             IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
> > +                             "atlas_irq",
> > +                             indio_dev);
> > +
> > +             if (ret)
> > +                     dev_warn(&client->dev,
> > +                             "request irq (%d) failed\n", client->irq);
> >       }
> >
> >       ret = atlas_set_powermode(data, 1);
>

Patch
diff mbox series

diff --git a/drivers/iio/chemical/atlas-sensor.c b/drivers/iio/chemical/atlas-sensor.c
index 2f0a6fed2589..9a1ab9f8fcc5 100644
--- a/drivers/iio/chemical/atlas-sensor.c
+++ b/drivers/iio/chemical/atlas-sensor.c
@@ -572,11 +572,6 @@  static int atlas_probe(struct i2c_client *client,
 	if (ret)
 		return ret;
 
-	if (client->irq <= 0) {
-		dev_err(&client->dev, "no valid irq defined\n");
-		return -EINVAL;
-	}
-
 	ret = chip->calibration(data);
 	if (ret)
 		return ret;
@@ -596,16 +591,18 @@  static int atlas_probe(struct i2c_client *client,
 
 	init_irq_work(&data->work, atlas_work_handler);
 
-	/* interrupt pin toggles on new conversion */
-	ret = devm_request_threaded_irq(&client->dev, client->irq,
-					NULL, atlas_interrupt_handler,
-					IRQF_TRIGGER_RISING |
-					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-					"atlas_irq",
-					indio_dev);
-	if (ret) {
-		dev_err(&client->dev, "request irq (%d) failed\n", client->irq);
-		goto unregister_buffer;
+	if (client->irq > 0) {
+		/* interrupt pin toggles on new conversion */
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+				NULL, atlas_interrupt_handler,
+				IRQF_TRIGGER_RISING |
+				IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+				"atlas_irq",
+				indio_dev);
+
+		if (ret)
+			dev_warn(&client->dev,
+				"request irq (%d) failed\n", client->irq);
 	}
 
 	ret = atlas_set_powermode(data, 1);