Re: [v2 2/9] iio:adc:at91: Use new triggered buffer setup helper

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On 6/18/2012 9:23 AM, Lars-Peter Clausen wrote:
Hi,

On 06/18/2012 09:56 AM, Maxime Ripard wrote:
Hi Lars-Peter,

Sorry, I thought Jonathan's Acked-by was enough.

No problem. I guess Jonathan's Acked-by is sort of enough, but having your
Acked-by as well is even better :). You are the author of that driver and
probably know the code better than anybody else.
I have a definite preference for getting Acks from driver writers
where possible.  They always know their drivers better than Lars-Peter
or I do!


I'm definitely ok with these changes, you can add my acked-by.


Thanks,
- Lars

Maxime

Le 15/06/2012 18:32, Lars-Peter Clausen a écrit :
On 06/08/2012 10:48 AM, Lars-Peter Clausen wrote:
Use the new triggered buffer setup helper function to allocate and register
buffer and pollfunc.

Signed-off-by: Lars-Peter Clausen<lars@xxxxxxxxxx>
Cc: Maxime Ripard<maxime.ripard@xxxxxxxxxxxxxxxxxx>
Acked-by: Jonathan Cameron<jic23@xxxxxxxxxx>

Hi Maxime,

Can you take a look at this patch and say whether you are OK with it? I've
only compile tested it since I don't have the hardware, but I don't expect
any problems since the conversion is straight forward and a similar
conversion has been done for other drivers as well, which worked fine so far.

Thanks,
- Lars


---
  drivers/iio/adc/Kconfig    |    3 +--
  drivers/iio/adc/at91_adc.c |   51 ++++----------------------------------------
  2 files changed, 5 insertions(+), 49 deletions(-)

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 9a0df81..4f7f584 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -7,8 +7,7 @@ config AT91_ADC
  	tristate "Atmel AT91 ADC"
  	depends on ARCH_AT91
  	select IIO_BUFFER
-	select IIO_KFIFO_BUF
-	select IIO_TRIGGER
+	select IIO_TRIGGERED_BUFFER
  	select SYSFS
  	help
  	  Say yes here to build support for Atmel AT91 ADC.
diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index f18a95d..6a08469 100644
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -26,9 +26,9 @@

  #include<linux/iio/iio.h>
  #include<linux/iio/buffer.h>
-#include<linux/iio/kfifo_buf.h>
  #include<linux/iio/trigger.h>
  #include<linux/iio/trigger_consumer.h>
+#include<linux/iio/triggered_buffer.h>

  #include<mach/at91_adc.h>

@@ -318,58 +318,15 @@ static void at91_adc_trigger_remove(struct iio_dev *idev)
  	}
  }

-static const struct iio_buffer_setup_ops at91_adc_buffer_ops = {
-	.preenable =&iio_sw_buffer_preenable,
-	.postenable =&iio_triggered_buffer_postenable,
-	.predisable =&iio_triggered_buffer_predisable,
-};
-
  static int at91_adc_buffer_init(struct iio_dev *idev)
  {
-	int ret;
-
-	idev->buffer = iio_kfifo_allocate(idev);
-	if (!idev->buffer) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-
-	idev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
-					&at91_adc_trigger_handler,
-					    IRQF_ONESHOT,
-					    idev,
-					    "%s-consumer%d",
-					    idev->name,
-					    idev->id);
-	if (idev->pollfunc == NULL) {
-		ret = -ENOMEM;
-		goto error_pollfunc;
-	}
-
-	idev->setup_ops =&at91_adc_buffer_ops;
-	idev->modes |= INDIO_BUFFER_TRIGGERED;
-
-	ret = iio_buffer_register(idev,
-				  idev->channels,
-				  idev->num_channels);
-	if (ret)
-		goto error_register;
-
-	return 0;
-
-error_register:
-	iio_dealloc_pollfunc(idev->pollfunc);
-error_pollfunc:
-	iio_kfifo_free(idev->buffer);
-error_ret:
-	return ret;
+	return iio_triggered_buffer_setup(idev,&iio_pollfunc_store_time,
+		&at91_adc_trigger_handler, NULL);
  }

  static void at91_adc_buffer_remove(struct iio_dev *idev)
  {
-	iio_buffer_unregister(idev);
-	iio_dealloc_pollfunc(idev->pollfunc);
-	iio_kfifo_free(idev->buffer);
+	iio_triggered_buffer_cleanup(idev);
  }

  static int at91_adc_read_raw(struct iio_dev *idev,





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