iio: imu: adis16400: move burst logic to ADIS lib

This change has been done separately, so that it's easier to visualize the
changed logic in the adis_scan_update() function.

Most of the function in this `adis16400_update_scan_mode()` that deals with
burst-mode will be re-used in the ADIS16480, but with different parameters.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

1 files changed, 0 insertions, 59 deletions

diff --git a/drivers/iio/imu/adis16400_buffer.c b/drivers/iio/imu/adis16400_buffer.c
deleted file mode 100644
index 199bd72348eb..000000000000
--- a/drivers/iio/imu/adis16400_buffer.c
+++ /dev/null
@@ -1,59 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/bitops.h>
-#include <linux/export.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/buffer.h>
-#include <linux/iio/triggered_buffer.h>
-#include <linux/iio/trigger_consumer.h>
-
-#include "adis16400.h"
-
-int adis16400_update_scan_mode(struct iio_dev *indio_dev,
-	const unsigned long *scan_mask)
-{
-	struct adis16400_state *st = iio_priv(indio_dev);
-	struct adis *adis = &st->adis;
-	unsigned int burst_length;
-	u8 *tx;
-
-	if (!adis->burst || !adis->burst->en)
-		return adis_update_scan_mode(indio_dev, scan_mask);
-
-	kfree(adis->xfer);
-	kfree(adis->buffer);
-
-	/* All but the timestamp channel */
-	burst_length = (indio_dev->num_channels - 1) * sizeof(u16);
-	burst_length += adis->burst->extra_len;
-
-	adis->xfer = kcalloc(2, sizeof(*adis->xfer), GFP_KERNEL);
-	if (!adis->xfer)
-		return -ENOMEM;
-
-	adis->buffer = kzalloc(burst_length + sizeof(u16), GFP_KERNEL);
-	if (!adis->buffer)
-		return -ENOMEM;
-
-	tx = adis->buffer + burst_length;
-	tx[0] = ADIS_READ_REG(adis->burst->reg_cmd);
-	tx[1] = 0;
-
-	adis->xfer[0].tx_buf = tx;
-	adis->xfer[0].bits_per_word = 8;
-	adis->xfer[0].len = 2;
-	adis->xfer[1].rx_buf = adis->buffer;
-	adis->xfer[1].bits_per_word = 8;
-	adis->xfer[1].len = burst_length;
-
-	spi_message_init(&adis->msg);
-	spi_message_add_tail(&adis->xfer[0], &adis->msg);
-	spi_message_add_tail(&adis->xfer[1], &adis->msg);
-
-	return 0;
-}