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

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Hi Lars-Peter,

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

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

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,
> 


-- 
Maxime Ripard, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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