4 files changed, 0 insertions, 442 deletions

diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index 5086a46..dc8582b 100644
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -10,18 +10,6 @@ config AD7291
 	  Say yes here to build support for Analog Devices AD7291
 	  8 Channel ADC with temperature sensor.
 
-config AD7298
-	tristate "Analog Devices AD7298 ADC driver"
-	depends on SPI
-	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
-	help
-	  Say yes here to build support for Analog Devices AD7298
-	  8 Channel ADC with temperature sensor.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called ad7298.
-
 config AD7606
 	tristate "Analog Devices AD7606 ADC driver"
 	depends on GPIOLIB
diff --git a/drivers/staging/iio/adc/Makefile b/drivers/staging/iio/adc/Makefile
index 4beaa58..7281451 100644
--- a/drivers/staging/iio/adc/Makefile
+++ b/drivers/staging/iio/adc/Makefile
@@ -12,8 +12,6 @@ ad799x-y := ad799x_core.o
 ad799x-$(CONFIG_AD799X_RING_BUFFER) += ad799x_ring.o
 obj-$(CONFIG_AD799X) += ad799x.o
 
-obj-$(CONFIG_AD7298) += ad7298.o
-
 obj-$(CONFIG_AD7291) += ad7291.o
 obj-$(CONFIG_AD7780) += ad7780.o
 obj-$(CONFIG_AD7793) += ad7793.o
diff --git a/drivers/staging/iio/adc/ad7298.c b/drivers/staging/iio/adc/ad7298.c
deleted file mode 100644
index 2742a9d..0000000
--- a/drivers/staging/iio/adc/ad7298.c
+++ /dev/null
@@ -1,408 +0,0 @@
-/*
- * AD7298 SPI ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/spi/spi.h>
-#include <linux/regulator/consumer.h>
-#include <linux/err.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
-
-#include "ad7298.h"
-
-#define AD7298_WRITE	(1 << 15) /* write to the control register */
-#define AD7298_REPEAT	(1 << 14) /* repeated conversion enable */
-#define AD7298_CH(x)	(1 << (13 - (x))) /* channel select */
-#define AD7298_TSENSE	(1 << 5) /* temperature conversion enable */
-#define AD7298_EXTREF	(1 << 2) /* external reference enable */
-#define AD7298_TAVG	(1 << 1) /* temperature sensor averaging enable */
-#define AD7298_PDD	(1 << 0) /* partial power down enable */
-
-#define AD7298_MAX_CHAN		8
-#define AD7298_BITS		12
-#define AD7298_STORAGE_BITS	16
-#define AD7298_INTREF_mV	2500
-
-#define AD7298_CH_TEMP		9
-
-#define RES_MASK(bits)	((1 << (bits)) - 1)
-
-struct ad7298_state {
-	struct spi_device		*spi;
-	struct regulator		*reg;
-	unsigned			ext_ref;
-	struct spi_transfer		ring_xfer[10];
-	struct spi_transfer		scan_single_xfer[3];
-	struct spi_message		ring_msg;
-	struct spi_message		scan_single_msg;
-	/*
-	 * DMA (thus cache coherency maintenance) requires the
-	 * transfer buffers to live in their own cache lines.
-	 */
-	unsigned short			rx_buf[12] ____cacheline_aligned;
-	unsigned short			tx_buf[2];
-};
-
-#define AD7298_V_CHAN(index)						\
-	{								\
-		.type = IIO_VOLTAGE,					\
-		.indexed = 1,						\
-		.channel = index,					\
-		.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |		\
-		IIO_CHAN_INFO_SCALE_SHARED_BIT,				\
-		.address = index,					\
-		.scan_index = index,					\
-		.scan_type = {						\
-			.sign = 'u',					\
-			.realbits = 12,					\
-			.storagebits = 16,				\
-			.endianness = IIO_BE,				\
-		},							\
-	}
-
-static const struct iio_chan_spec ad7298_channels[] = {
-	{
-		.type = IIO_TEMP,
-		.indexed = 1,
-		.channel = 0,
-		.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
-			IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
-			IIO_CHAN_INFO_OFFSET_SEPARATE_BIT,
-		.address = AD7298_CH_TEMP,
-		.scan_index = -1,
-		.scan_type = {
-			.sign = 's',
-			.realbits = 32,
-			.storagebits = 32,
-		},
-	},
-	AD7298_V_CHAN(0),
-	AD7298_V_CHAN(1),
-	AD7298_V_CHAN(2),
-	AD7298_V_CHAN(3),
-	AD7298_V_CHAN(4),
-	AD7298_V_CHAN(5),
-	AD7298_V_CHAN(6),
-	AD7298_V_CHAN(7),
-	IIO_CHAN_SOFT_TIMESTAMP(8),
-};
-
-/**
- * ad7298_update_scan_mode() setup the spi transfer buffer for the new scan mask
- **/
-static int ad7298_update_scan_mode(struct iio_dev *indio_dev,
-	const unsigned long *active_scan_mask)
-{
-	struct ad7298_state *st = iio_priv(indio_dev);
-	int i, m;
-	unsigned short command;
-	int scan_count;
-
-	/* Now compute overall size */
-	scan_count = bitmap_weight(active_scan_mask, indio_dev->masklength);
-
-	command = AD7298_WRITE | st->ext_ref;
-
-	for (i = 0, m = AD7298_CH(0); i < AD7298_MAX_CHAN; i++, m >>= 1)
-		if (test_bit(i, active_scan_mask))
-			command |= m;
-
-	st->tx_buf[0] = cpu_to_be16(command);
-
-	/* build spi ring message */
-	st->ring_xfer[0].tx_buf = &st->tx_buf[0];
-	st->ring_xfer[0].len = 2;
-	st->ring_xfer[0].cs_change = 1;
-	st->ring_xfer[1].tx_buf = &st->tx_buf[1];
-	st->ring_xfer[1].len = 2;
-	st->ring_xfer[1].cs_change = 1;
-
-	spi_message_init(&st->ring_msg);
-	spi_message_add_tail(&st->ring_xfer[0], &st->ring_msg);
-	spi_message_add_tail(&st->ring_xfer[1], &st->ring_msg);
-
-	for (i = 0; i < scan_count; i++) {
-		st->ring_xfer[i + 2].rx_buf = &st->rx_buf[i];
-		st->ring_xfer[i + 2].len = 2;
-		st->ring_xfer[i + 2].cs_change = 1;
-		spi_message_add_tail(&st->ring_xfer[i + 2], &st->ring_msg);
-	}
-	/* make sure last transfer cs_change is not set */
-	st->ring_xfer[i + 1].cs_change = 0;
-
-	return 0;
-}
-
-/**
- * ad7298_trigger_handler() bh of trigger launched polling to ring buffer
- *
- * Currently there is no option in this driver to disable the saving of
- * timestamps within the ring.
- **/
-static irqreturn_t ad7298_trigger_handler(int irq, void *p)
-{
-	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->indio_dev;
-	struct ad7298_state *st = iio_priv(indio_dev);
-	s64 time_ns = 0;
-	int b_sent;
-
-	b_sent = spi_sync(st->spi, &st->ring_msg);
-	if (b_sent)
-		goto done;
-
-	if (indio_dev->scan_timestamp) {
-		time_ns = iio_get_time_ns();
-		memcpy((u8 *)st->rx_buf + indio_dev->scan_bytes - sizeof(s64),
-			&time_ns, sizeof(time_ns));
-	}
-
-	iio_push_to_buffers(indio_dev, (u8 *)st->rx_buf);
-
-done:
-	iio_trigger_notify_done(indio_dev->trig);
-
-	return IRQ_HANDLED;
-}
-
-static int ad7298_scan_direct(struct ad7298_state *st, unsigned ch)
-{
-	int ret;
-	st->tx_buf[0] = cpu_to_be16(AD7298_WRITE | st->ext_ref |
-				   (AD7298_CH(0) >> ch));
-
-	ret = spi_sync(st->spi, &st->scan_single_msg);
-	if (ret)
-		return ret;
-
-	return be16_to_cpu(st->rx_buf[0]);
-}
-
-static int ad7298_scan_temp(struct ad7298_state *st, int *val)
-{
-	int ret;
-	__be16 buf;
-
-	buf = cpu_to_be16(AD7298_WRITE | AD7298_TSENSE |
-			  AD7298_TAVG | st->ext_ref);
-
-	ret = spi_write(st->spi, (u8 *)&buf, 2);
-	if (ret)
-		return ret;
-
-	buf = cpu_to_be16(0);
-
-	ret = spi_write(st->spi, (u8 *)&buf, 2);
-	if (ret)
-		return ret;
-
-	usleep_range(101, 1000); /* sleep > 100us */
-
-	ret = spi_read(st->spi, (u8 *)&buf, 2);
-	if (ret)
-		return ret;
-
-	*val = sign_extend32(be16_to_cpu(buf), 11);
-
-	return 0;
-}
-
-static int ad7298_get_ref_voltage(struct ad7298_state *st)
-{
-	int vref;
-
-	if (st->ext_ref) {
-		vref = regulator_get_voltage(st->reg);
-		if (vref < 0)
-			return vref;
-
-		return vref / 1000;
-	} else {
-		return AD7298_INTREF_mV;
-	}
-}
-
-static int ad7298_read_raw(struct iio_dev *indio_dev,
-			   struct iio_chan_spec const *chan,
-			   int *val,
-			   int *val2,
-			   long m)
-{
-	int ret;
-	struct ad7298_state *st = iio_priv(indio_dev);
-
-	switch (m) {
-	case IIO_CHAN_INFO_RAW:
-		mutex_lock(&indio_dev->mlock);
-		if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
-			ret = -EBUSY;
-		} else {
-			if (chan->address == AD7298_CH_TEMP)
-				ret = ad7298_scan_temp(st, val);
-			else
-				ret = ad7298_scan_direct(st, chan->address);
-		}
-		mutex_unlock(&indio_dev->mlock);
-
-		if (ret < 0)
-			return ret;
-
-		if (chan->address != AD7298_CH_TEMP)
-			*val = ret & RES_MASK(AD7298_BITS);
-
-		return IIO_VAL_INT;
-	case IIO_CHAN_INFO_SCALE:
-		switch (chan->type) {
-		case IIO_VOLTAGE:
-			*val = ad7298_get_ref_voltage(st);
-			*val2 = chan->scan_type.realbits;
-			return IIO_VAL_FRACTIONAL_LOG2;
-		case IIO_TEMP:
-			*val = ad7298_get_ref_voltage(st);
-			*val2 = 10;
-			return IIO_VAL_FRACTIONAL;
-		default:
-			return -EINVAL;
-		}
-	case IIO_CHAN_INFO_OFFSET:
-		*val = 1093 - 2732500 / ad7298_get_ref_voltage(st);
-		return IIO_VAL_INT;
-	}
-	return -EINVAL;
-}
-
-static const struct iio_info ad7298_info = {
-	.read_raw = &ad7298_read_raw,
-	.update_scan_mode = ad7298_update_scan_mode,
-	.driver_module = THIS_MODULE,
-};
-
-static int __devinit ad7298_probe(struct spi_device *spi)
-{
-	struct ad7298_platform_data *pdata = spi->dev.platform_data;
-	struct ad7298_state *st;
-	struct iio_dev *indio_dev = iio_device_alloc(sizeof(*st));
-	int ret;
-
-	if (indio_dev == NULL)
-		return -ENOMEM;
-
-	st = iio_priv(indio_dev);
-
-	if (pdata && pdata->ext_ref)
-		st->ext_ref = AD7298_EXTREF;
-
-	if (st->ext_ref) {
-		st->reg = regulator_get(&spi->dev, "vref");
-		if (IS_ERR(st->reg)) {
-			ret = PTR_ERR(st->reg);
-			goto error_free;
-		}
-		ret = regulator_enable(st->reg);
-		if (ret)
-			goto error_put_reg;
-	}
-
-	spi_set_drvdata(spi, indio_dev);
-
-	st->spi = spi;
-
-	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->channels = ad7298_channels;
-	indio_dev->num_channels = ARRAY_SIZE(ad7298_channels);
-	indio_dev->info = &ad7298_info;
-
-	/* Setup default message */
-
-	st->scan_single_xfer[0].tx_buf = &st->tx_buf[0];
-	st->scan_single_xfer[0].len = 2;
-	st->scan_single_xfer[0].cs_change = 1;
-	st->scan_single_xfer[1].tx_buf = &st->tx_buf[1];
-	st->scan_single_xfer[1].len = 2;
-	st->scan_single_xfer[1].cs_change = 1;
-	st->scan_single_xfer[2].rx_buf = &st->rx_buf[0];
-	st->scan_single_xfer[2].len = 2;
-
-	spi_message_init(&st->scan_single_msg);
-	spi_message_add_tail(&st->scan_single_xfer[0], &st->scan_single_msg);
-	spi_message_add_tail(&st->scan_single_xfer[1], &st->scan_single_msg);
-	spi_message_add_tail(&st->scan_single_xfer[2], &st->scan_single_msg);
-
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
-			&ad7298_trigger_handler, NULL);
-	if (ret)
-		goto error_disable_reg;
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_cleanup_ring;
-
-	return 0;
-
-error_cleanup_ring:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_disable_reg:
-	if (st->ext_ref)
-		regulator_disable(st->reg);
-error_put_reg:
-	if (st->ext_ref)
-		regulator_put(st->reg);
-error_free:
-	iio_device_free(indio_dev);
-
-	return ret;
-}
-
-static int __devexit ad7298_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7298_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	if (st->ext_ref) {
-		regulator_disable(st->reg);
-		regulator_put(st->reg);
-	}
-	iio_device_free(indio_dev);
-
-	return 0;
-}
-
-static const struct spi_device_id ad7298_id[] = {
-	{"ad7298", 0},
-	{}
-};
-MODULE_DEVICE_TABLE(spi, ad7298_id);
-
-static struct spi_driver ad7298_driver = {
-	.driver = {
-		.name	= "ad7298",
-		.owner	= THIS_MODULE,
-	},
-	.probe		= ad7298_probe,
-	.remove		= __devexit_p(ad7298_remove),
-	.id_table	= ad7298_id,
-};
-module_spi_driver(ad7298_driver);
-
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
-MODULE_DESCRIPTION("Analog Devices AD7298 ADC");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/adc/ad7298.h b/drivers/staging/iio/adc/ad7298.h
deleted file mode 100644
index c8ac969..0000000
--- a/drivers/staging/iio/adc/ad7298.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * AD7298 SPI ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#ifndef IIO_ADC_AD7298_H_
-#define IIO_ADC_AD7298_H_
-
-/**
- * struct ad7298_platform_data - Platform data for the ad7298 ADC driver
- * @ext_ref: Whether to use an external reference voltage.
- **/
-struct ad7298_platform_data {
-	bool ext_ref;
-};
-
-#endif /* IIO_ADC_AD7298_H_ */