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>

diff --git a/drivers/staging/iio/gyro/adis16080_core.c b/drivers/staging/iio/gyro/adis16080_core.c
index ad2db4d723dfb36a591a602f10c40a5fd6e1643b..bd3eb1019867bf1a52c34cef12366c5f1d73d333 100644 (file)
--- a/drivers/staging/iio/gyro/adis16080_core.c
+++ b/drivers/staging/iio/gyro/adis16080_core.c
@@ -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;