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staging:iio:gyro:adis16080 convert to iio_chan_spec. 

This is a rare driver that is so simple it actually gets longer
as a result of this conversion.  Oh well, swings and roundabouts.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron 2011-08-12 17:47:57 +01:00 committed by Greg Kroah-Hartman
parent 037bad9a72
commit 584c81fbee
1 changed files with 51 additions and 41 deletions
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92
drivers/staging/iio/gyro/adis16080_core.c
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@ -16,8 +16,6 @@
#include "../iio.h"
#include "../sysfs.h"
#include "gyro.h"
#include "../adc/adc.h"
#define ADIS16080_DIN_GYRO (0 << 10) /* Gyroscope output */
#define ADIS16080_DIN_TEMP (1 << 10) /* Temperature output */
@ -44,11 +42,10 @@ struct adis16080_state {
u8 buf[2] ____cacheline_aligned;
};
static int adis16080_spi_write(struct device *dev,
static int adis16080_spi_write(struct iio_dev *indio_dev,
u16 val)
{
int ret;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct adis16080_state *st = iio_priv(indio_dev);
mutex_lock(&st->buf_lock);
@ -61,11 +58,10 @@ static int adis16080_spi_write(struct device *dev,
return ret;
}
static int adis16080_spi_read(struct device *dev,
u16 *val)
static int adis16080_spi_read(struct iio_dev *indio_dev,
u16 *val)
{
int ret;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct adis16080_state *st = iio_priv(indio_dev);
mutex_lock(&st->buf_lock);
@ -79,50 +75,62 @@ static int adis16080_spi_read(struct device *dev,
return ret;
}
static ssize_t adis16080_read(struct device *dev,
struct device_attribute *attr,
char *buf)
static int adis16080_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val,
int *val2,
long mask)
{
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
struct iio_dev *indio_dev = dev_get_drvdata(dev);
u16 val = 0;
ssize_t ret;
int ret = -EINVAL;
u16 ut;
/* Take the iio_dev status lock */
mutex_lock(&indio_dev->mlock);
ret = adis16080_spi_write(dev,
this_attr->address | ADIS16080_DIN_WRITE);
if (ret < 0)
goto error_ret;
ret = adis16080_spi_read(dev, &val);
error_ret:
switch (mask) {
case 0:
ret = adis16080_spi_write(indio_dev,
chan->address |
ADIS16080_DIN_WRITE);
if (ret < 0)
break;
ret = adis16080_spi_read(indio_dev, &ut);
if (ret < 0)
break;
*val = ut;
ret = IIO_VAL_INT;
break;
}
mutex_unlock(&indio_dev->mlock);
if (ret == 0)
return sprintf(buf, "%d\n", val);
else
return ret;
return ret;
}
static IIO_DEV_ATTR_GYRO_Z(adis16080_read, ADIS16080_DIN_GYRO);
static IIO_DEVICE_ATTR(temp_raw, S_IRUGO, adis16080_read, NULL,
ADIS16080_DIN_TEMP);
static IIO_DEV_ATTR_IN_RAW(0, adis16080_read, ADIS16080_DIN_AIN1);
static IIO_DEV_ATTR_IN_RAW(1, adis16080_read, ADIS16080_DIN_AIN2);
static struct attribute *adis16080_attributes[] = {
&iio_dev_attr_gyro_z_raw.dev_attr.attr,
&iio_dev_attr_temp_raw.dev_attr.attr,
&iio_dev_attr_in0_raw.dev_attr.attr,
&iio_dev_attr_in1_raw.dev_attr.attr,
NULL
};
static const struct attribute_group adis16080_attribute_group = {
.attrs = adis16080_attributes,
static const struct iio_chan_spec adis16080_channels[] = {
{
.type = IIO_GYRO,
.modified = 1,
.channel2 = IIO_MOD_Z,
.address = ADIS16080_DIN_GYRO,
}, {
.type = IIO_IN,
.indexed = 1,
.channel = 0,
.address = ADIS16080_DIN_AIN1,
}, {
.type = IIO_IN,
.indexed = 1,
.channel = 1,
.address = ADIS16080_DIN_AIN2,
}, {
.type = IIO_TEMP,
.indexed = 1,
.channel = 0,
.address = ADIS16080_DIN_TEMP,
}
};
static const struct iio_info adis16080_info = {
.attrs = &adis16080_attribute_group,
.read_raw = &adis16080_read_raw,
.driver_module = THIS_MODULE,
};
@ -147,6 +155,8 @@ static int __devinit adis16080_probe(struct spi_device *spi)
mutex_init(&st->buf_lock);
indio_dev->name = spi->dev.driver->name;
indio_dev->channels = adis16080_channels;
indio_dev->num_channels = ARRAY_SIZE(adis16080_channels);
indio_dev->dev.parent = &spi->dev;
indio_dev->info = &adis16080_info;
indio_dev->modes = INDIO_DIRECT_MODE;