Adding invensense drivers from SDK, ported to Linux 3.10

Change-Id: Ia39c67631eedb7851c1e937e380e310bcf87e7e3

1 files changed, 0 insertions, 176 deletions

diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
deleted file mode 100644
index 99d8e0b0dd3..00000000000
--- a/drivers/iio/imu/adis_buffer.c
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * Common library for ADIS16XXX devices
- *
- * Copyright 2012 Analog Devices Inc.
- *   Author: Lars-Peter Clausen <lars@metafoo.de>
- *
- * Licensed under the GPL-2 or later.
- */
-
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
-#include <linux/iio/imu/adis.h>
-
-int adis_update_scan_mode(struct iio_dev *indio_dev,
-	const unsigned long *scan_mask)
-{
-	struct adis *adis = iio_device_get_drvdata(indio_dev);
-	const struct iio_chan_spec *chan;
-	unsigned int scan_count;
-	unsigned int i, j;
-	__be16 *tx, *rx;
-
-	kfree(adis->xfer);
-	kfree(adis->buffer);
-
-	scan_count = indio_dev->scan_bytes / 2;
-
-	adis->xfer = kcalloc(scan_count + 1, sizeof(*adis->xfer), GFP_KERNEL);
-	if (!adis->xfer)
-		return -ENOMEM;
-
-	adis->buffer = kzalloc(indio_dev->scan_bytes * 2, GFP_KERNEL);
-	if (!adis->buffer)
-		return -ENOMEM;
-
-	rx = adis->buffer;
-	tx = rx + indio_dev->scan_bytes;
-
-	spi_message_init(&adis->msg);
-
-	for (j = 0; j <= scan_count; j++) {
-		adis->xfer[j].bits_per_word = 8;
-		if (j != scan_count)
-			adis->xfer[j].cs_change = 1;
-		adis->xfer[j].len = 2;
-		adis->xfer[j].delay_usecs = adis->data->read_delay;
-		if (j < scan_count)
-			adis->xfer[j].tx_buf = &tx[j];
-		if (j >= 1)
-			adis->xfer[j].rx_buf = &rx[j - 1];
-		spi_message_add_tail(&adis->xfer[j], &adis->msg);
-	}
-
-	chan = indio_dev->channels;
-	for (i = 0; i < indio_dev->num_channels; i++, chan++) {
-		if (!test_bit(chan->scan_index, scan_mask))
-			continue;
-		if (chan->scan_type.storagebits == 32)
-			*tx++ = cpu_to_be16((chan->address + 2) << 8);
-		*tx++ = cpu_to_be16(chan->address << 8);
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(adis_update_scan_mode);
-
-static irqreturn_t adis_trigger_handler(int irq, void *p)
-{
-	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->indio_dev;
-	struct adis *adis = iio_device_get_drvdata(indio_dev);
-	int ret;
-
-	if (!adis->buffer)
-		return -ENOMEM;
-
-	if (adis->data->has_paging) {
-		mutex_lock(&adis->txrx_lock);
-		if (adis->current_page != 0) {
-			adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID);
-			adis->tx[1] = 0;
-			spi_write(adis->spi, adis->tx, 2);
-		}
-	}
-
-	ret = spi_sync(adis->spi, &adis->msg);
-	if (ret)
-		dev_err(&adis->spi->dev, "Failed to read data: %d", ret);
-
-
-	if (adis->data->has_paging) {
-		adis->current_page = 0;
-		mutex_unlock(&adis->txrx_lock);
-	}
-
-	/* Guaranteed to be aligned with 8 byte boundary */
-	if (indio_dev->scan_timestamp) {
-		void *b = adis->buffer + indio_dev->scan_bytes - sizeof(s64);
-		*(s64 *)b = pf->timestamp;
-	}
-
-	iio_push_to_buffers(indio_dev, adis->buffer);
-
-	iio_trigger_notify_done(indio_dev->trig);
-
-	return IRQ_HANDLED;
-}
-
-/**
- * adis_setup_buffer_and_trigger() - Sets up buffer and trigger for the adis device
- * @adis: The adis device.
- * @indio_dev: The IIO device.
- * @trigger_handler: Optional trigger handler, may be NULL.
- *
- * Returns 0 on success, a negative error code otherwise.
- *
- * This function sets up the buffer and trigger for a adis devices.  If
- * 'trigger_handler' is NULL the default trigger handler will be used. The
- * default trigger handler will simply read the registers assigned to the
- * currently active channels.
- *
- * adis_cleanup_buffer_and_trigger() should be called to free the resources
- * allocated by this function.
- */
-int adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
-	irqreturn_t (*trigger_handler)(int, void *))
-{
-	int ret;
-
-	if (!trigger_handler)
-		trigger_handler = adis_trigger_handler;
-
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		trigger_handler, NULL);
-	if (ret)
-		return ret;
-
-	if (adis->spi->irq) {
-		ret = adis_probe_trigger(adis, indio_dev);
-		if (ret)
-			goto error_buffer_cleanup;
-	}
-	return 0;
-
-error_buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(adis_setup_buffer_and_trigger);
-
-/**
- * adis_cleanup_buffer_and_trigger() - Free buffer and trigger resources
- * @adis: The adis device.
- * @indio_dev: The IIO device.
- *
- * Frees resources allocated by adis_setup_buffer_and_trigger()
- */
-void adis_cleanup_buffer_and_trigger(struct adis *adis,
-	struct iio_dev *indio_dev)
-{
-	if (adis->spi->irq)
-		adis_remove_trigger(adis);
-	kfree(adis->buffer);
-	kfree(adis->xfer);
-	iio_triggered_buffer_cleanup(indio_dev);
-}
-EXPORT_SYMBOL_GPL(adis_cleanup_buffer_and_trigger);