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/*
* Copyright 2010-2012 Analog Devices Inc.
* Copyright (C) 2008 Jonathan Cameron
*
* Licensed under the GPL-2 or later.
*
* ad7476_ring.c
*/
#include <linux/interrupt.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>
#include <linux/iio/iio.h>
#include <linux/iio/buffer.h>
#include <linux/iio/trigger_consumer.h>
#include <linux/iio/triggered_buffer.h>
#include "ad7476.h"
static irqreturn_t ad7476_trigger_handler(int irq, void *p)
{
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct ad7476_state *st = iio_priv(indio_dev);
s64 time_ns;
int b_sent;
b_sent = spi_sync(st->spi, &st->msg);
if (b_sent < 0)
goto done;
time_ns = iio_get_time_ns();
if (indio_dev->scan_timestamp)
((s64 *)st->data)[1] = time_ns;
iio_push_to_buffer(indio_dev->buffer, st->data);
done:
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
}
int ad7476_register_ring_funcs_and_init(struct iio_dev *indio_dev)
{
return iio_triggered_buffer_setup(indio_dev, NULL,
&ad7476_trigger_handler, NULL);
}
void ad7476_ring_cleanup(struct iio_dev *indio_dev)
{
iio_triggered_buffer_cleanup(indio_dev);
}
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