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staging:iio:resolver:ad2s90 chan spec conversion

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Trivial conversion.

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 2011-10-05 15:27:58 +01:00 • committed by Greg Kroah-Hartman
parent 19147f5bc6
commit 199d847a2d
1 changed files with 18 additions and 23 deletions
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41
drivers/staging/iio/resolver/ad2s90.c
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@ -25,45 +25,38 @@ struct ad2s90_state {
u8 rx[2] ____cacheline_aligned; u8 rx[2] ____cacheline_aligned;
}; };
static ssize_t ad2s90_show_angular(struct device *dev, static int ad2s90_read_raw(struct iio_dev *indio_dev,
struct device_attribute *attr, char *buf) struct iio_chan_spec const *chan,
int *val,
int *val2,
long m)
{ {
int ret; int ret;
ssize_t len = 0; struct ad2s90_state *st = iio_priv(indio_dev);
u16 val;
struct ad2s90_state *st = iio_priv(dev_get_drvdata(dev));
mutex_lock(&st->lock); mutex_lock(&st->lock);
ret = spi_read(st->sdev, st->rx, 2); ret = spi_read(st->sdev, st->rx, 2);
if (ret) if (ret)
goto error_ret; goto error_ret;
val = (((u16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4); *val = (((u16)(st->rx[0])) << 4) | ((st->rx[1] & 0xF0) >> 4);
len = sprintf(buf, "%d\n", val);
error_ret: error_ret:
mutex_unlock(&st->lock); mutex_unlock(&st->lock);
return ret ? ret : len; return IIO_VAL_INT;
} }
#define IIO_DEV_ATTR_SIMPLE_RESOLVER(_show) \
IIO_DEVICE_ATTR(angular, S_IRUGO, _show, NULL, 0)
static IIO_DEV_ATTR_SIMPLE_RESOLVER(ad2s90_show_angular);
static struct attribute *ad2s90_attributes[] = {
&iio_dev_attr_angular.dev_attr.attr,
NULL,
};
static const struct attribute_group ad2s90_attribute_group = {
.attrs = ad2s90_attributes,
};
static const struct iio_info ad2s90_info = { static const struct iio_info ad2s90_info = {
.attrs = &ad2s90_attribute_group, .read_raw = &ad2s90_read_raw,
.driver_module = THIS_MODULE, .driver_module = THIS_MODULE,
}; };
static const struct iio_chan_spec ad2s90_chan = {
.type = IIO_ANGL,
.indexed = 1,
.channel = 0,
};
static int __devinit ad2s90_probe(struct spi_device *spi) static int __devinit ad2s90_probe(struct spi_device *spi)
{ {
struct iio_dev *indio_dev; struct iio_dev *indio_dev;
@ -83,6 +76,8 @@ static int __devinit ad2s90_probe(struct spi_device *spi)
indio_dev->dev.parent = &spi->dev; indio_dev->dev.parent = &spi->dev;
indio_dev->info = &ad2s90_info; indio_dev->info = &ad2s90_info;
indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = &ad2s90_chan;
indio_dev->num_channels = 1;
indio_dev->name = spi_get_device_id(spi)->name; indio_dev->name = spi_get_device_id(spi)->name;
ret = iio_device_register(indio_dev); ret = iio_device_register(indio_dev);