staging:iio:dac: Add AD5380 driver
This patch adds support for the Analog Devices D5380, AD5381, AD5382, AD5383, AD5384, AD5390, AD5391, AD5392 multi-channel Digital to Analog Converters. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Lars-Peter Clausen
Greg Kroah-Hartman
Родитель
68b14d7ea9
Коммит
c03f2c5368
|
|
@ -24,6 +24,19 @@ config AD5360
|
|||
To compile this driver as module choose M here: the module will be called
|
||||
ad5360.
|
||||
|
||||
config AD5380
|
||||
tristate "Analog Devices AD5380/81/82/83/84/90/91/92 DAC driver"
|
||||
depends on (SPI_MASTER || I2C)
|
||||
select REGMAP_I2C if I2C
|
||||
select REGMAP_SPI if SPI_MASTER
|
||||
help
|
||||
Say yes here to build support for Analog Devices AD5380, AD5381,
|
||||
AD5382, AD5383, AD5384, AD5390, AD5391, AD5392 multi-channel
|
||||
Digital to Analog Converters (DAC).
|
||||
|
||||
To compile this driver as module choose M here: the module will be called
|
||||
ad5380.
|
||||
|
||||
config AD5421
|
||||
tristate "Analog Devices AD5421 DAC driver"
|
||||
depends on SPI
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
#
|
||||
|
||||
obj-$(CONFIG_AD5360) += ad5360.o
|
||||
obj-$(CONFIG_AD5380) += ad5380.o
|
||||
obj-$(CONFIG_AD5421) += ad5421.o
|
||||
obj-$(CONFIG_AD5624R_SPI) += ad5624r_spi.o
|
||||
obj-$(CONFIG_AD5064) += ad5064.o
|
||||
|
|
|
|||
|
|
@ -0,0 +1,676 @@
|
|||
/*
|
||||
* Analog devices AD5380, AD5381, AD5382, AD5383, AD5390, AD5391, AD5392
|
||||
* multi-channel Digital to Analog Converters driver
|
||||
*
|
||||
* Copyright 2011 Analog Devices Inc.
|
||||
*
|
||||
* Licensed under the GPL-2.
|
||||
*/
|
||||
|
||||
#include <linux/device.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/spi/spi.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/sysfs.h>
|
||||
#include <linux/regmap.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
|
||||
#include "../iio.h"
|
||||
#include "../sysfs.h"
|
||||
#include "dac.h"
|
||||
|
||||
|
||||
#define AD5380_REG_DATA(x) (((x) << 2) | 3)
|
||||
#define AD5380_REG_OFFSET(x) (((x) << 2) | 2)
|
||||
#define AD5380_REG_GAIN(x) (((x) << 2) | 1)
|
||||
#define AD5380_REG_SF_PWR_DOWN (8 << 2)
|
||||
#define AD5380_REG_SF_PWR_UP (9 << 2)
|
||||
#define AD5380_REG_SF_CTRL (12 << 2)
|
||||
|
||||
#define AD5380_CTRL_PWR_DOWN_MODE_OFFSET 13
|
||||
#define AD5380_CTRL_INT_VREF_2V5 BIT(12)
|
||||
#define AD5380_CTRL_INT_VREF_EN BIT(10)
|
||||
|
||||
/**
|
||||
* struct ad5380_chip_info - chip specific information
|
||||
* @channel_template: channel specification template
|
||||
* @num_channels: number of channels
|
||||
* @int_vref: internal vref in uV
|
||||
*/
|
||||
|
||||
struct ad5380_chip_info {
|
||||
struct iio_chan_spec channel_template;
|
||||
unsigned int num_channels;
|
||||
unsigned int int_vref;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ad5380_state - driver instance specific data
|
||||
* @regmap: regmap instance used by the device
|
||||
* @chip_info: chip model specific constants, available modes etc
|
||||
* @vref_reg: vref supply regulator
|
||||
* @vref: actual reference voltage used in uA
|
||||
* @pwr_down: whether the chip is currently in power down mode
|
||||
*/
|
||||
|
||||
struct ad5380_state {
|
||||
struct regmap *regmap;
|
||||
const struct ad5380_chip_info *chip_info;
|
||||
struct regulator *vref_reg;
|
||||
int vref;
|
||||
bool pwr_down;
|
||||
};
|
||||
|
||||
enum ad5380_type {
|
||||
ID_AD5380_3,
|
||||
ID_AD5380_5,
|
||||
ID_AD5381_3,
|
||||
ID_AD5381_5,
|
||||
ID_AD5382_3,
|
||||
ID_AD5382_5,
|
||||
ID_AD5383_3,
|
||||
ID_AD5383_5,
|
||||
ID_AD5390_3,
|
||||
ID_AD5390_5,
|
||||
ID_AD5391_3,
|
||||
ID_AD5391_5,
|
||||
ID_AD5392_3,
|
||||
ID_AD5392_5,
|
||||
};
|
||||
|
||||
#define AD5380_CHANNEL(_bits) { \
|
||||
.type = IIO_VOLTAGE, \
|
||||
.indexed = 1, \
|
||||
.output = 1, \
|
||||
.info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT | \
|
||||
IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT | \
|
||||
IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, \
|
||||
.scan_type = IIO_ST('u', (_bits), 16, 14 - (_bits)) \
|
||||
}
|
||||
|
||||
static const struct ad5380_chip_info ad5380_chip_info_tbl[] = {
|
||||
[ID_AD5380_3] = {
|
||||
.channel_template = AD5380_CHANNEL(14),
|
||||
.num_channels = 40,
|
||||
.int_vref = 1250000,
|
||||
},
|
||||
[ID_AD5380_5] = {
|
||||
.channel_template = AD5380_CHANNEL(14),
|
||||
.num_channels = 40,
|
||||
.int_vref = 2500000,
|
||||
},
|
||||
[ID_AD5381_3] = {
|
||||
.channel_template = AD5380_CHANNEL(12),
|
||||
.num_channels = 16,
|
||||
.int_vref = 1250000,
|
||||
},
|
||||
[ID_AD5381_5] = {
|
||||
.channel_template = AD5380_CHANNEL(12),
|
||||
.num_channels = 16,
|
||||
.int_vref = 2500000,
|
||||
},
|
||||
[ID_AD5382_3] = {
|
||||
.channel_template = AD5380_CHANNEL(14),
|
||||
.num_channels = 32,
|
||||
.int_vref = 1250000,
|
||||
},
|
||||
[ID_AD5382_5] = {
|
||||
.channel_template = AD5380_CHANNEL(14),
|
||||
.num_channels = 32,
|
||||
.int_vref = 2500000,
|
||||
},
|
||||
[ID_AD5383_3] = {
|
||||
.channel_template = AD5380_CHANNEL(12),
|
||||
.num_channels = 32,
|
||||
.int_vref = 1250000,
|
||||
},
|
||||
[ID_AD5383_5] = {
|
||||
.channel_template = AD5380_CHANNEL(12),
|
||||
.num_channels = 32,
|
||||
.int_vref = 2500000,
|
||||
},
|
||||
[ID_AD5390_3] = {
|
||||
.channel_template = AD5380_CHANNEL(14),
|
||||
.num_channels = 16,
|
||||
.int_vref = 1250000,
|
||||
},
|
||||
[ID_AD5390_5] = {
|
||||
.channel_template = AD5380_CHANNEL(14),
|
||||
.num_channels = 16,
|
||||
.int_vref = 2500000,
|
||||
},
|
||||
[ID_AD5391_3] = {
|
||||
.channel_template = AD5380_CHANNEL(12),
|
||||
.num_channels = 16,
|
||||
.int_vref = 1250000,
|
||||
},
|
||||
[ID_AD5391_5] = {
|
||||
.channel_template = AD5380_CHANNEL(12),
|
||||
.num_channels = 16,
|
||||
.int_vref = 2500000,
|
||||
},
|
||||
[ID_AD5392_3] = {
|
||||
.channel_template = AD5380_CHANNEL(14),
|
||||
.num_channels = 8,
|
||||
.int_vref = 1250000,
|
||||
},
|
||||
[ID_AD5392_5] = {
|
||||
.channel_template = AD5380_CHANNEL(14),
|
||||
.num_channels = 8,
|
||||
.int_vref = 2500000,
|
||||
},
|
||||
};
|
||||
|
||||
static ssize_t ad5380_read_dac_powerdown(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
||||
struct ad5380_state *st = iio_priv(indio_dev);
|
||||
|
||||
return sprintf(buf, "%d\n", st->pwr_down);
|
||||
}
|
||||
|
||||
static ssize_t ad5380_write_dac_powerdown(struct device *dev,
|
||||
struct device_attribute *attr, const char *buf, size_t len)
|
||||
{
|
||||
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
||||
struct ad5380_state *st = iio_priv(indio_dev);
|
||||
bool pwr_down;
|
||||
int ret;
|
||||
|
||||
ret = strtobool(buf, &pwr_down);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
mutex_lock(&indio_dev->mlock);
|
||||
|
||||
if (pwr_down)
|
||||
ret = regmap_write(st->regmap, AD5380_REG_SF_PWR_DOWN, 0);
|
||||
else
|
||||
ret = regmap_write(st->regmap, AD5380_REG_SF_PWR_UP, 0);
|
||||
|
||||
st->pwr_down = pwr_down;
|
||||
|
||||
mutex_unlock(&indio_dev->mlock);
|
||||
|
||||
return ret ? ret : len;
|
||||
}
|
||||
|
||||
static IIO_DEVICE_ATTR(out_voltage_powerdown,
|
||||
S_IRUGO | S_IWUSR,
|
||||
ad5380_read_dac_powerdown,
|
||||
ad5380_write_dac_powerdown, 0);
|
||||
|
||||
static const char ad5380_powerdown_modes[][15] = {
|
||||
[0] = "100kohm_to_gnd",
|
||||
[1] = "three_state",
|
||||
};
|
||||
|
||||
static ssize_t ad5380_read_powerdown_mode(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
||||
struct ad5380_state *st = iio_priv(indio_dev);
|
||||
unsigned int mode;
|
||||
int ret;
|
||||
|
||||
ret = regmap_read(st->regmap, AD5380_REG_SF_CTRL, &mode);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
mode = (mode >> AD5380_CTRL_PWR_DOWN_MODE_OFFSET) & 1;
|
||||
|
||||
return sprintf(buf, "%s\n", ad5380_powerdown_modes[mode]);
|
||||
}
|
||||
|
||||
static ssize_t ad5380_write_powerdown_mode(struct device *dev,
|
||||
struct device_attribute *attr, const char *buf, size_t len)
|
||||
{
|
||||
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
||||
struct ad5380_state *st = iio_priv(indio_dev);
|
||||
unsigned int i;
|
||||
int ret;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(ad5380_powerdown_modes); ++i) {
|
||||
if (sysfs_streq(buf, ad5380_powerdown_modes[i]))
|
||||
break;
|
||||
}
|
||||
|
||||
if (i == ARRAY_SIZE(ad5380_powerdown_modes))
|
||||
return -EINVAL;
|
||||
|
||||
ret = regmap_update_bits(st->regmap, AD5380_REG_SF_CTRL,
|
||||
1 << AD5380_CTRL_PWR_DOWN_MODE_OFFSET,
|
||||
i << AD5380_CTRL_PWR_DOWN_MODE_OFFSET);
|
||||
|
||||
return ret ? ret : len;
|
||||
}
|
||||
|
||||
static IIO_DEVICE_ATTR(out_voltage_powerdown_mode,
|
||||
S_IRUGO | S_IWUSR,
|
||||
ad5380_read_powerdown_mode,
|
||||
ad5380_write_powerdown_mode, 0);
|
||||
|
||||
static IIO_CONST_ATTR(out_voltage_powerdown_mode_available,
|
||||
"100kohm_to_gnd three_state");
|
||||
|
||||
static struct attribute *ad5380_attributes[] = {
|
||||
&iio_dev_attr_out_voltage_powerdown.dev_attr.attr,
|
||||
&iio_dev_attr_out_voltage_powerdown_mode.dev_attr.attr,
|
||||
&iio_const_attr_out_voltage_powerdown_mode_available.dev_attr.attr,
|
||||
NULL,
|
||||
};
|
||||
|
||||
static const struct attribute_group ad5380_attribute_group = {
|
||||
.attrs = ad5380_attributes,
|
||||
};
|
||||
|
||||
static unsigned int ad5380_info_to_reg(struct iio_chan_spec const *chan,
|
||||
long info)
|
||||
{
|
||||
switch (info) {
|
||||
case 0:
|
||||
return AD5380_REG_DATA(chan->address);
|
||||
case IIO_CHAN_INFO_CALIBBIAS:
|
||||
return AD5380_REG_OFFSET(chan->address);
|
||||
case IIO_CHAN_INFO_CALIBSCALE:
|
||||
return AD5380_REG_GAIN(chan->address);
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ad5380_write_raw(struct iio_dev *indio_dev,
|
||||
struct iio_chan_spec const *chan, int val, int val2, long info)
|
||||
{
|
||||
const unsigned int max_val = (1 << chan->scan_type.realbits);
|
||||
struct ad5380_state *st = iio_priv(indio_dev);
|
||||
|
||||
switch (info) {
|
||||
case 0:
|
||||
case IIO_CHAN_INFO_CALIBSCALE:
|
||||
if (val >= max_val || val < 0)
|
||||
return -EINVAL;
|
||||
|
||||
return regmap_write(st->regmap,
|
||||
ad5380_info_to_reg(chan, info),
|
||||
val << chan->scan_type.shift);
|
||||
case IIO_CHAN_INFO_CALIBBIAS:
|
||||
val += (1 << chan->scan_type.realbits) / 2;
|
||||
if (val >= max_val || val < 0)
|
||||
return -EINVAL;
|
||||
|
||||
return regmap_write(st->regmap,
|
||||
AD5380_REG_OFFSET(chan->address),
|
||||
val << chan->scan_type.shift);
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int ad5380_read_raw(struct iio_dev *indio_dev,
|
||||
struct iio_chan_spec const *chan, int *val, int *val2, long info)
|
||||
{
|
||||
struct ad5380_state *st = iio_priv(indio_dev);
|
||||
unsigned long scale_uv;
|
||||
int ret;
|
||||
|
||||
switch (info) {
|
||||
case 0:
|
||||
case IIO_CHAN_INFO_CALIBSCALE:
|
||||
ret = regmap_read(st->regmap, ad5380_info_to_reg(chan, info),
|
||||
val);
|
||||
if (ret)
|
||||
return ret;
|
||||
*val >>= chan->scan_type.shift;
|
||||
return IIO_VAL_INT;
|
||||
case IIO_CHAN_INFO_CALIBBIAS:
|
||||
ret = regmap_read(st->regmap, AD5380_REG_OFFSET(chan->address),
|
||||
val);
|
||||
if (ret)
|
||||
return ret;
|
||||
*val >>= chan->scan_type.shift;
|
||||
val -= (1 << chan->scan_type.realbits) / 2;
|
||||
return IIO_VAL_INT;
|
||||
case IIO_CHAN_INFO_SCALE:
|
||||
scale_uv = ((2 * st->vref) >> chan->scan_type.realbits) * 100;
|
||||
*val = scale_uv / 100000;
|
||||
*val2 = (scale_uv % 100000) * 10;
|
||||
return IIO_VAL_INT_PLUS_MICRO;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static const struct iio_info ad5380_info = {
|
||||
.read_raw = ad5380_read_raw,
|
||||
.write_raw = ad5380_write_raw,
|
||||
.attrs = &ad5380_attribute_group,
|
||||
.driver_module = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int __devinit ad5380_alloc_channels(struct iio_dev *indio_dev)
|
||||
{
|
||||
struct ad5380_state *st = iio_priv(indio_dev);
|
||||
struct iio_chan_spec *channels;
|
||||
unsigned int i;
|
||||
|
||||
channels = kcalloc(sizeof(struct iio_chan_spec),
|
||||
st->chip_info->num_channels, GFP_KERNEL);
|
||||
|
||||
if (!channels)
|
||||
return -ENOMEM;
|
||||
|
||||
for (i = 0; i < st->chip_info->num_channels; ++i) {
|
||||
channels[i] = st->chip_info->channel_template;
|
||||
channels[i].channel = i;
|
||||
channels[i].address = i;
|
||||
}
|
||||
|
||||
indio_dev->channels = channels;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devinit ad5380_probe(struct device *dev, struct regmap *regmap,
|
||||
enum ad5380_type type, const char *name)
|
||||
{
|
||||
struct iio_dev *indio_dev;
|
||||
struct ad5380_state *st;
|
||||
unsigned int ctrl = 0;
|
||||
int ret;
|
||||
|
||||
indio_dev = iio_allocate_device(sizeof(*st));
|
||||
if (indio_dev == NULL) {
|
||||
dev_err(dev, "Failed to allocate iio device\n");
|
||||
ret = -ENOMEM;
|
||||
goto error_regmap_exit;
|
||||
}
|
||||
|
||||
st = iio_priv(indio_dev);
|
||||
dev_set_drvdata(dev, indio_dev);
|
||||
|
||||
st->chip_info = &ad5380_chip_info_tbl[type];
|
||||
st->regmap = regmap;
|
||||
|
||||
indio_dev->dev.parent = dev;
|
||||
indio_dev->name = name;
|
||||
indio_dev->info = &ad5380_info;
|
||||
indio_dev->modes = INDIO_DIRECT_MODE;
|
||||
indio_dev->num_channels = st->chip_info->num_channels;
|
||||
|
||||
ret = ad5380_alloc_channels(indio_dev);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to allocate channel spec: %d\n", ret);
|
||||
goto error_free;
|
||||
}
|
||||
|
||||
if (st->chip_info->int_vref == 2500000)
|
||||
ctrl |= AD5380_CTRL_INT_VREF_2V5;
|
||||
|
||||
st->vref_reg = regulator_get(dev, "vref");
|
||||
if (!IS_ERR(st->vref_reg)) {
|
||||
ret = regulator_enable(st->vref_reg);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to enable vref regulators: %d\n",
|
||||
ret);
|
||||
goto error_free_reg;
|
||||
}
|
||||
|
||||
st->vref = regulator_get_voltage(st->vref_reg);
|
||||
} else {
|
||||
st->vref = st->chip_info->int_vref;
|
||||
ctrl |= AD5380_CTRL_INT_VREF_EN;
|
||||
}
|
||||
|
||||
ret = regmap_write(st->regmap, AD5380_REG_SF_CTRL, ctrl);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to write to device: %d\n", ret);
|
||||
goto error_disable_reg;
|
||||
}
|
||||
|
||||
ret = iio_device_register(indio_dev);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to register iio device: %d\n", ret);
|
||||
goto error_disable_reg;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
error_disable_reg:
|
||||
if (!IS_ERR(st->vref_reg))
|
||||
regulator_disable(st->vref_reg);
|
||||
error_free_reg:
|
||||
if (!IS_ERR(st->vref_reg))
|
||||
regulator_put(st->vref_reg);
|
||||
|
||||
kfree(indio_dev->channels);
|
||||
error_free:
|
||||
iio_free_device(indio_dev);
|
||||
error_regmap_exit:
|
||||
regmap_exit(regmap);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit ad5380_remove(struct device *dev)
|
||||
{
|
||||
struct iio_dev *indio_dev = dev_get_drvdata(dev);
|
||||
struct ad5380_state *st = iio_priv(indio_dev);
|
||||
|
||||
iio_device_unregister(indio_dev);
|
||||
|
||||
kfree(indio_dev->channels);
|
||||
|
||||
if (!IS_ERR(st->vref_reg)) {
|
||||
regulator_disable(st->vref_reg);
|
||||
regulator_put(st->vref_reg);
|
||||
}
|
||||
|
||||
regmap_exit(st->regmap);
|
||||
iio_free_device(indio_dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static bool ad5380_reg_false(struct device *dev, unsigned int reg)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
static const struct regmap_config ad5380_regmap_config = {
|
||||
.reg_bits = 10,
|
||||
.val_bits = 14,
|
||||
|
||||
.max_register = AD5380_REG_DATA(40),
|
||||
.cache_type = REGCACHE_RBTREE,
|
||||
|
||||
.volatile_reg = ad5380_reg_false,
|
||||
.readable_reg = ad5380_reg_false,
|
||||
};
|
||||
|
||||
#if IS_ENABLED(CONFIG_SPI_MASTER)
|
||||
|
||||
static int __devinit ad5380_spi_probe(struct spi_device *spi)
|
||||
{
|
||||
const struct spi_device_id *id = spi_get_device_id(spi);
|
||||
struct regmap *regmap;
|
||||
|
||||
regmap = regmap_init_spi(spi, &ad5380_regmap_config);
|
||||
|
||||
if (IS_ERR(regmap))
|
||||
return PTR_ERR(regmap);
|
||||
|
||||
return ad5380_probe(&spi->dev, regmap, id->driver_data, id->name);
|
||||
}
|
||||
|
||||
static int __devexit ad5380_spi_remove(struct spi_device *spi)
|
||||
{
|
||||
return ad5380_remove(&spi->dev);
|
||||
}
|
||||
|
||||
static const struct spi_device_id ad5380_spi_ids[] = {
|
||||
{ "ad5380-3", ID_AD5380_3 },
|
||||
{ "ad5380-5", ID_AD5380_5 },
|
||||
{ "ad5381-3", ID_AD5381_3 },
|
||||
{ "ad5381-5", ID_AD5381_5 },
|
||||
{ "ad5382-3", ID_AD5382_3 },
|
||||
{ "ad5382-5", ID_AD5382_5 },
|
||||
{ "ad5383-3", ID_AD5383_3 },
|
||||
{ "ad5383-5", ID_AD5383_5 },
|
||||
{ "ad5384-3", ID_AD5380_3 },
|
||||
{ "ad5384-5", ID_AD5380_5 },
|
||||
{ "ad5390-3", ID_AD5390_3 },
|
||||
{ "ad5390-5", ID_AD5390_5 },
|
||||
{ "ad5391-3", ID_AD5391_3 },
|
||||
{ "ad5391-5", ID_AD5391_5 },
|
||||
{ "ad5392-3", ID_AD5392_3 },
|
||||
{ "ad5392-5", ID_AD5392_5 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(spi, ad5380_spi_ids);
|
||||
|
||||
static struct spi_driver ad5380_spi_driver = {
|
||||
.driver = {
|
||||
.name = "ad5380",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = ad5380_spi_probe,
|
||||
.remove = __devexit_p(ad5380_spi_remove),
|
||||
.id_table = ad5380_spi_ids,
|
||||
};
|
||||
|
||||
static inline int ad5380_spi_register_driver(void)
|
||||
{
|
||||
return spi_register_driver(&ad5380_spi_driver);
|
||||
}
|
||||
|
||||
static inline void ad5380_spi_unregister_driver(void)
|
||||
{
|
||||
spi_unregister_driver(&ad5380_spi_driver);
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
static inline int ad5380_spi_register_driver(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void ad5380_spi_unregister_driver(void)
|
||||
{
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#if IS_ENABLED(CONFIG_I2C)
|
||||
|
||||
static int __devinit ad5380_i2c_probe(struct i2c_client *i2c,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct regmap *regmap;
|
||||
|
||||
regmap = regmap_init_i2c(i2c, &ad5380_regmap_config);
|
||||
|
||||
if (IS_ERR(regmap))
|
||||
return PTR_ERR(regmap);
|
||||
|
||||
return ad5380_probe(&i2c->dev, regmap, id->driver_data, id->name);
|
||||
}
|
||||
|
||||
static int __devexit ad5380_i2c_remove(struct i2c_client *i2c)
|
||||
{
|
||||
return ad5380_remove(&i2c->dev);
|
||||
}
|
||||
|
||||
static const struct i2c_device_id ad5380_i2c_ids[] = {
|
||||
{ "ad5380-3", ID_AD5380_3 },
|
||||
{ "ad5380-5", ID_AD5380_5 },
|
||||
{ "ad5381-3", ID_AD5381_3 },
|
||||
{ "ad5381-5", ID_AD5381_5 },
|
||||
{ "ad5382-3", ID_AD5382_3 },
|
||||
{ "ad5382-5", ID_AD5382_5 },
|
||||
{ "ad5383-3", ID_AD5383_3 },
|
||||
{ "ad5383-5", ID_AD5383_5 },
|
||||
{ "ad5384-3", ID_AD5380_3 },
|
||||
{ "ad5384-5", ID_AD5380_5 },
|
||||
{ "ad5390-3", ID_AD5390_3 },
|
||||
{ "ad5390-5", ID_AD5390_5 },
|
||||
{ "ad5391-3", ID_AD5391_3 },
|
||||
{ "ad5391-5", ID_AD5391_5 },
|
||||
{ "ad5392-3", ID_AD5392_3 },
|
||||
{ "ad5392-5", ID_AD5392_5 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, ad5380_i2c_ids);
|
||||
|
||||
static struct i2c_driver ad5380_i2c_driver = {
|
||||
.driver = {
|
||||
.name = "ad5380",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = ad5380_i2c_probe,
|
||||
.remove = __devexit_p(ad5380_i2c_remove),
|
||||
.id_table = ad5380_i2c_ids,
|
||||
};
|
||||
|
||||
static inline int ad5380_i2c_register_driver(void)
|
||||
{
|
||||
return i2c_add_driver(&ad5380_i2c_driver);
|
||||
}
|
||||
|
||||
static inline void ad5380_i2c_unregister_driver(void)
|
||||
{
|
||||
i2c_del_driver(&ad5380_i2c_driver);
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
static inline int ad5380_i2c_register_driver(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void ad5380_i2c_unregister_driver(void)
|
||||
{
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
static int __init ad5380_spi_init(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = ad5380_spi_register_driver();
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = ad5380_i2c_register_driver();
|
||||
if (ret) {
|
||||
ad5380_spi_unregister_driver();
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
module_init(ad5380_spi_init);
|
||||
|
||||
static void __exit ad5380_spi_exit(void)
|
||||
{
|
||||
ad5380_i2c_unregister_driver();
|
||||
ad5380_spi_unregister_driver();
|
||||
|
||||
}
|
||||
module_exit(ad5380_spi_exit);
|
||||
|
||||
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
|
||||
MODULE_DESCRIPTION("Analog Devices AD5380/81/82/83/84/90/91/92 DAC");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Загрузка…
Ссылка в новой задаче