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iio:adc:at91: Use new triggered buffer setup helper

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Use the new triggered buffer setup helper function to allocate and register
buffer and pollfunc.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lars-Peter Clausen 2012-06-18 18:33:49 +02:00 committed by Greg Kroah-Hartman
parent 23f2d735a9
commit 90032e4e9c
2 changed files with 5 additions and 49 deletions
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3
drivers/iio/adc/Kconfig
View File

@ -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.

51
drivers/iio/adc/at91_adc.c
View File

@ -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,