staging:iio: Move DAC drivers out of staging

The IIO DAC drivers are in a reasonably good shape. They all make use of channel
spec and non of them provides non-documented sysfs attributes. Code style should
be OK as well, both checkpatch and coccicheck only report trivial issues.

So lets move the whole folder out of staging.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 394 deletions

diff --git a/drivers/staging/iio/dac/ad5504.c b/drivers/staging/iio/dac/ad5504.c
deleted file mode 100644
index 1289e9bc1688..000000000000
--- a/drivers/staging/iio/dac/ad5504.c
+++ /dev/null
@@ -1,394 +0,0 @@
-/*
- * AD5504, AD5501 High Voltage Digital to Analog Converter
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#include <linux/interrupt.h>
-#include <linux/fs.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/regulator/consumer.h>
-#include <linux/module.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/iio/events.h>
-
-#include "ad5504.h"
-
-#define AD5505_BITS			12
-#define AD5504_RES_MASK			((1 << (AD5505_BITS)) - 1)
-
-#define AD5504_CMD_READ			(1 << 15)
-#define AD5504_CMD_WRITE		(0 << 15)
-#define AD5504_ADDR(addr)		((addr) << 12)
-
-/* Registers */
-#define AD5504_ADDR_NOOP		0
-#define AD5504_ADDR_DAC(x)		((x) + 1)
-#define AD5504_ADDR_ALL_DAC		5
-#define AD5504_ADDR_CTRL		7
-
-/* Control Register */
-#define AD5504_DAC_PWR(ch)		((ch) << 2)
-#define AD5504_DAC_PWRDWN_MODE(mode)	((mode) << 6)
-#define AD5504_DAC_PWRDN_20K		0
-#define AD5504_DAC_PWRDN_3STATE		1
-
-/**
- * struct ad5446_state - driver instance specific data
- * @us:			spi_device
- * @reg:		supply regulator
- * @vref_mv:		actual reference voltage used
- * @pwr_down_mask	power down mask
- * @pwr_down_mode	current power down mode
- */
-
-struct ad5504_state {
-	struct spi_device		*spi;
-	struct regulator		*reg;
-	unsigned short			vref_mv;
-	unsigned			pwr_down_mask;
-	unsigned			pwr_down_mode;
-};
-
-/**
- * ad5504_supported_device_ids:
- */
-
-enum ad5504_supported_device_ids {
-	ID_AD5504,
-	ID_AD5501,
-};
-
-static int ad5504_spi_write(struct spi_device *spi, u8 addr, u16 val)
-{
-	u16 tmp = cpu_to_be16(AD5504_CMD_WRITE |
-			      AD5504_ADDR(addr) |
-			      (val & AD5504_RES_MASK));
-
-	return spi_write(spi, (u8 *)&tmp, 2);
-}
-
-static int ad5504_spi_read(struct spi_device *spi, u8 addr)
-{
-	u16 tmp = cpu_to_be16(AD5504_CMD_READ | AD5504_ADDR(addr));
-	u16 val;
-	int ret;
-	struct spi_transfer	t = {
-			.tx_buf		= &tmp,
-			.rx_buf		= &val,
-			.len		= 2,
-		};
-	struct spi_message	m;
-
-	spi_message_init(&m);
-	spi_message_add_tail(&t, &m);
-	ret = spi_sync(spi, &m);
-
-	if (ret < 0)
-		return ret;
-
-	return be16_to_cpu(val) & AD5504_RES_MASK;
-}
-
-static int ad5504_read_raw(struct iio_dev *indio_dev,
-			   struct iio_chan_spec const *chan,
-			   int *val,
-			   int *val2,
-			   long m)
-{
-	struct ad5504_state *st = iio_priv(indio_dev);
-	unsigned long scale_uv;
-	int ret;
-
-	switch (m) {
-	case IIO_CHAN_INFO_RAW:
-		ret = ad5504_spi_read(st->spi, chan->address);
-		if (ret < 0)
-			return ret;
-
-		*val = ret;
-
-		return IIO_VAL_INT;
-	case IIO_CHAN_INFO_SCALE:
-		scale_uv = (st->vref_mv * 1000) >> chan->scan_type.realbits;
-		*val =  scale_uv / 1000;
-		*val2 = (scale_uv % 1000) * 1000;
-		return IIO_VAL_INT_PLUS_MICRO;
-
-	}
-	return -EINVAL;
-}
-
-static int ad5504_write_raw(struct iio_dev *indio_dev,
-			       struct iio_chan_spec const *chan,
-			       int val,
-			       int val2,
-			       long mask)
-{
-	struct ad5504_state *st = iio_priv(indio_dev);
-	int ret;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_RAW:
-		if (val >= (1 << chan->scan_type.realbits) || val < 0)
-			return -EINVAL;
-
-		return ad5504_spi_write(st->spi, chan->address, val);
-	default:
-		ret = -EINVAL;
-	}
-
-	return -EINVAL;
-}
-
-static const char * const ad5504_powerdown_modes[] = {
-	"20kohm_to_gnd",
-	"three_state",
-};
-
-static int ad5504_get_powerdown_mode(struct iio_dev *indio_dev,
-	const struct iio_chan_spec *chan)
-{
-	struct ad5504_state *st = iio_priv(indio_dev);
-
-	return st->pwr_down_mode;
-}
-
-static int ad5504_set_powerdown_mode(struct iio_dev *indio_dev,
-	const struct iio_chan_spec *chan, unsigned int mode)
-{
-	struct ad5504_state *st = iio_priv(indio_dev);
-
-	st->pwr_down_mode = mode;
-
-	return 0;
-}
-
-static const struct iio_enum ad5504_powerdown_mode_enum = {
-	.items = ad5504_powerdown_modes,
-	.num_items = ARRAY_SIZE(ad5504_powerdown_modes),
-	.get = ad5504_get_powerdown_mode,
-	.set = ad5504_set_powerdown_mode,
-};
-
-static ssize_t ad5504_read_dac_powerdown(struct iio_dev *indio_dev,
-	uintptr_t private, const struct iio_chan_spec *chan, char *buf)
-{
-	struct ad5504_state *st = iio_priv(indio_dev);
-
-	return sprintf(buf, "%d\n",
-			!(st->pwr_down_mask & (1 << chan->channel)));
-}
-
-static ssize_t ad5504_write_dac_powerdown(struct iio_dev *indio_dev,
-	uintptr_t private, const struct iio_chan_spec *chan, const char *buf,
-	size_t len)
-{
-	bool pwr_down;
-	int ret;
-	struct ad5504_state *st = iio_priv(indio_dev);
-
-	ret = strtobool(buf, &pwr_down);
-	if (ret)
-		return ret;
-
-	if (pwr_down)
-		st->pwr_down_mask |= (1 << chan->channel);
-	else
-		st->pwr_down_mask &= ~(1 << chan->channel);
-
-	ret = ad5504_spi_write(st->spi, AD5504_ADDR_CTRL,
-				AD5504_DAC_PWRDWN_MODE(st->pwr_down_mode) |
-				AD5504_DAC_PWR(st->pwr_down_mask));
-
-	/* writes to the CTRL register must be followed by a NOOP */
-	ad5504_spi_write(st->spi, AD5504_ADDR_NOOP, 0);
-
-	return ret ? ret : len;
-}
-
-static IIO_CONST_ATTR(temp0_thresh_rising_value, "110000");
-static IIO_CONST_ATTR(temp0_thresh_rising_en, "1");
-
-static struct attribute *ad5504_ev_attributes[] = {
-	&iio_const_attr_temp0_thresh_rising_value.dev_attr.attr,
-	&iio_const_attr_temp0_thresh_rising_en.dev_attr.attr,
-	NULL,
-};
-
-static struct attribute_group ad5504_ev_attribute_group = {
-	.attrs = ad5504_ev_attributes,
-	.name = "events",
-};
-
-static irqreturn_t ad5504_event_handler(int irq, void *private)
-{
-	iio_push_event(private,
-		       IIO_UNMOD_EVENT_CODE(IIO_TEMP,
-					    0,
-					    IIO_EV_TYPE_THRESH,
-					    IIO_EV_DIR_RISING),
-		       iio_get_time_ns());
-
-	return IRQ_HANDLED;
-}
-
-static const struct iio_info ad5504_info = {
-	.write_raw = ad5504_write_raw,
-	.read_raw = ad5504_read_raw,
-	.event_attrs = &ad5504_ev_attribute_group,
-	.driver_module = THIS_MODULE,
-};
-
-static const struct iio_chan_spec_ext_info ad5504_ext_info[] = {
-	{
-		.name = "powerdown",
-		.read = ad5504_read_dac_powerdown,
-		.write = ad5504_write_dac_powerdown,
-	},
-	IIO_ENUM("powerdown_mode", true, &ad5504_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ad5504_powerdown_mode_enum),
-	{ },
-};
-
-#define AD5504_CHANNEL(_chan) { \
-	.type = IIO_VOLTAGE, \
-	.indexed = 1, \
-	.output = 1, \
-	.channel = (_chan), \
-	.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
-		     IIO_CHAN_INFO_SCALE_SHARED_BIT, \
-	.address = AD5504_ADDR_DAC(_chan), \
-	.scan_type = IIO_ST('u', 12, 16, 0), \
-	.ext_info = ad5504_ext_info, \
-}
-
-static const struct iio_chan_spec ad5504_channels[] = {
-	AD5504_CHANNEL(0),
-	AD5504_CHANNEL(1),
-	AD5504_CHANNEL(2),
-	AD5504_CHANNEL(3),
-};
-
-static int __devinit ad5504_probe(struct spi_device *spi)
-{
-	struct ad5504_platform_data *pdata = spi->dev.platform_data;
-	struct iio_dev *indio_dev;
-	struct ad5504_state *st;
-	struct regulator *reg;
-	int ret, voltage_uv = 0;
-
-	indio_dev = iio_device_alloc(sizeof(*st));
-	if (indio_dev == NULL) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-	reg = regulator_get(&spi->dev, "vcc");
-	if (!IS_ERR(reg)) {
-		ret = regulator_enable(reg);
-		if (ret)
-			goto error_put_reg;
-
-		voltage_uv = regulator_get_voltage(reg);
-	}
-
-	spi_set_drvdata(spi, indio_dev);
-	st = iio_priv(indio_dev);
-	if (voltage_uv)
-		st->vref_mv = voltage_uv / 1000;
-	else if (pdata)
-		st->vref_mv = pdata->vref_mv;
-	else
-		dev_warn(&spi->dev, "reference voltage unspecified\n");
-
-	st->reg = reg;
-	st->spi = spi;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->name = spi_get_device_id(st->spi)->name;
-	indio_dev->info = &ad5504_info;
-	if (spi_get_device_id(st->spi)->driver_data == ID_AD5501)
-		indio_dev->num_channels = 1;
-	else
-		indio_dev->num_channels = 4;
-	indio_dev->channels = ad5504_channels;
-	indio_dev->modes = INDIO_DIRECT_MODE;
-
-	if (spi->irq) {
-		ret = request_threaded_irq(spi->irq,
-					   NULL,
-					   &ad5504_event_handler,
-					   IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-					   spi_get_device_id(st->spi)->name,
-					   indio_dev);
-		if (ret)
-			goto error_disable_reg;
-	}
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_free_irq;
-
-	return 0;
-
-error_free_irq:
-	if (spi->irq)
-		free_irq(spi->irq, indio_dev);
-error_disable_reg:
-	if (!IS_ERR(reg))
-		regulator_disable(reg);
-error_put_reg:
-	if (!IS_ERR(reg))
-		regulator_put(reg);
-
-	iio_device_free(indio_dev);
-error_ret:
-	return ret;
-}
-
-static int __devexit ad5504_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad5504_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	if (spi->irq)
-		free_irq(spi->irq, indio_dev);
-
-	if (!IS_ERR(st->reg)) {
-		regulator_disable(st->reg);
-		regulator_put(st->reg);
-	}
-	iio_device_free(indio_dev);
-
-	return 0;
-}
-
-static const struct spi_device_id ad5504_id[] = {
-	{"ad5504", ID_AD5504},
-	{"ad5501", ID_AD5501},
-	{}
-};
-MODULE_DEVICE_TABLE(spi, ad5504_id);
-
-static struct spi_driver ad5504_driver = {
-	.driver = {
-		   .name = "ad5504",
-		   .owner = THIS_MODULE,
-		   },
-	.probe = ad5504_probe,
-	.remove = __devexit_p(ad5504_remove),
-	.id_table = ad5504_id,
-};
-module_spi_driver(ad5504_driver);
-
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
-MODULE_DESCRIPTION("Analog Devices AD5501/AD5501 DAC");
-MODULE_LICENSE("GPL v2");