1 files changed, 0 insertions, 204 deletions
diff --git a/drivers/staging/iio/imu/adis16400_ring.c b/drivers/staging/iio/imu/adis16400_ring.c
deleted file mode 100644
index d46c1e38cf7b..000000000000
--- a/drivers/staging/iio/imu/adis16400_ring.c
+++ /dev/null
@@ -1,204 +0,0 @@
-#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 "../ring_sw.h"
-#include <linux/iio/trigger_consumer.h>
-#include "adis16400.h"
-
-/**
- * adis16400_spi_read_burst() - read all data registers
- * @indio_dev: the IIO device
- * @rx: somewhere to pass back the value read (min size is 24 bytes)
- **/
-static int adis16400_spi_read_burst(struct iio_dev *indio_dev, u8 *rx)
-{
-	struct spi_message msg;
-	struct adis16400_state *st = iio_priv(indio_dev);
-	u32 old_speed_hz = st->us->max_speed_hz;
-	int ret;
-
-	struct spi_transfer xfers[] = {
-		{
-			.tx_buf = st->tx,
-			.bits_per_word = 8,
-			.len = 2,
-		}, {
-			.rx_buf = rx,
-			.bits_per_word = 8,
-			.len = 24,
-		},
-	};
-
-	mutex_lock(&st->buf_lock);
-	st->tx[0] = ADIS16400_READ_REG(ADIS16400_GLOB_CMD);
-	st->tx[1] = 0;
-
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfers[0], &msg);
-	spi_message_add_tail(&xfers[1], &msg);
-
-	st->us->max_speed_hz = min(ADIS16400_SPI_BURST, old_speed_hz);
-	spi_setup(st->us);
-
-	ret = spi_sync(st->us, &msg);
-	if (ret)
-		dev_err(&st->us->dev, "problem when burst reading");
-
-	st->us->max_speed_hz = old_speed_hz;
-	spi_setup(st->us);
-	mutex_unlock(&st->buf_lock);
-	return ret;
-}
-
-static const u16 read_all_tx_array[] = {
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16400_SUPPLY_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16400_XGYRO_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16400_YGYRO_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16400_ZGYRO_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16400_XACCL_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16400_YACCL_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16400_ZACCL_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16350_XTEMP_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16350_YTEMP_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16350_ZTEMP_OUT)),
-	cpu_to_be16(ADIS16400_READ_REG(ADIS16400_AUX_ADC)),
-};
-
-static int adis16350_spi_read_all(struct iio_dev *indio_dev, u8 *rx)
-{
-	struct adis16400_state *st = iio_priv(indio_dev);
-
-	struct spi_message msg;
-	int i, j = 0, ret;
-	struct spi_transfer *xfers;
-	int scan_count = bitmap_weight(indio_dev->active_scan_mask,
-				       indio_dev->masklength);
-
-	xfers = kzalloc(sizeof(*xfers)*(scan_count + 1),
-			GFP_KERNEL);
-	if (xfers == NULL)
-		return -ENOMEM;
-
-	for (i = 0; i < ARRAY_SIZE(read_all_tx_array); i++)
-		if (test_bit(i, indio_dev->active_scan_mask)) {
-			xfers[j].tx_buf = &read_all_tx_array[i];
-			xfers[j].bits_per_word = 16;
-			xfers[j].len = 2;
-			xfers[j + 1].rx_buf = rx + j*2;
-			j++;
-		}
-	xfers[j].bits_per_word = 16;
-	xfers[j].len = 2;
-
-	spi_message_init(&msg);
-	for (j = 0; j < scan_count + 1; j++)
-		spi_message_add_tail(&xfers[j], &msg);
-
-	ret = spi_sync(st->us, &msg);
-	kfree(xfers);
-
-	return ret;
-}
-
-/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device
- * specific to be rolled into the core.
- */
-static irqreturn_t adis16400_trigger_handler(int irq, void *p)
-{
-	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->indio_dev;
-	struct adis16400_state *st = iio_priv(indio_dev);
-	int i = 0, j, ret = 0;
-	s16 *data;
-
-	/* Asumption that long is enough for maximum channels */
-	unsigned long mask = *indio_dev->active_scan_mask;
-	int scan_count = bitmap_weight(indio_dev->active_scan_mask,
-				       indio_dev->masklength);
-	data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
-	if (data == NULL) {
-		dev_err(&st->us->dev, "memory alloc failed in ring bh");
-		goto done;
-	}
-
-	if (scan_count) {
-		if (st->variant->flags & ADIS16400_NO_BURST) {
-			ret = adis16350_spi_read_all(indio_dev, st->rx);
-			if (ret < 0)
-				goto done;
-			for (; i < scan_count; i++)
-				data[i]	= *(s16 *)(st->rx + i*2);
-		} else {
-			ret = adis16400_spi_read_burst(indio_dev, st->rx);
-			if (ret < 0)
-				goto done;
-			for (; i < scan_count; i++) {
-				j = __ffs(mask);
-				mask &= ~(1 << j);
-				data[i] = be16_to_cpup(
-					(__be16 *)&(st->rx[j*2]));
-			}
-		}
-	}
-	/* Guaranteed to be aligned with 8 byte boundary */
-	if (indio_dev->scan_timestamp)
-		*((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
-	iio_push_to_buffers(indio_dev, (u8 *) data);
-
-done:
-	kfree(data);
-	iio_trigger_notify_done(indio_dev->trig);
-
-	return IRQ_HANDLED;
-}
-
-void adis16400_unconfigure_ring(struct iio_dev *indio_dev)
-{
-	iio_dealloc_pollfunc(indio_dev->pollfunc);
-	iio_sw_rb_free(indio_dev->buffer);
-}
-
-static const struct iio_buffer_setup_ops adis16400_ring_setup_ops = {
-	.preenable = &iio_sw_buffer_preenable,
-	.postenable = &iio_triggered_buffer_postenable,
-	.predisable = &iio_triggered_buffer_predisable,
-};
-
-int adis16400_configure_ring(struct iio_dev *indio_dev)
-{
-	int ret = 0;
-	struct iio_buffer *ring;
-
-	ring = iio_sw_rb_allocate(indio_dev);
-	if (!ring) {
-		ret = -ENOMEM;
-		return ret;
-	}
-	indio_dev->buffer = ring;
-	ring->scan_timestamp = true;
-	indio_dev->setup_ops = &adis16400_ring_setup_ops;
-
-	indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
-						 &adis16400_trigger_handler,
-						 IRQF_ONESHOT,
-						 indio_dev,
-						 "%s_consumer%d",
-						 indio_dev->name,
-						 indio_dev->id);
-	if (indio_dev->pollfunc == NULL) {
-		ret = -ENOMEM;
-		goto error_iio_sw_rb_free;
-	}
-
-	indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
-	return 0;
-error_iio_sw_rb_free:
-	iio_sw_rb_free(indio_dev->buffer);
-	return ret;
-}