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iio: industrialio-core: Add IIO_OUT type

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Add IIO_OUT type for DAC like devices
In case of IIO_OUT make sure the channel device attribute is writable

Ideally we add a flag to iio_chan_spec that tells the core that
the channel device attribute is writable...

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Hennerich
2011-06-10 15:40:48 +02:00
committed by Greg Kroah-Hartman
parent 88bc30548a
commit ae19178eac
2 changed files with 4 additions and 1 deletions
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1
drivers/staging/iio/iio.h
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@@ -30,6 +30,7 @@
enum iio_chan_type { enum iio_chan_type {
/* real channel types */ /* real channel types */
IIO_IN, IIO_IN,
IIO_OUT,
IIO_CURRENT, IIO_CURRENT,
IIO_POWER, IIO_POWER,
IIO_ACCEL, IIO_ACCEL,

4
drivers/staging/iio/industrialio-core.c
View File

@@ -47,6 +47,7 @@ static const char * const iio_chan_type_name_spec_shared[] = {
[IIO_TIMESTAMP] = "timestamp", [IIO_TIMESTAMP] = "timestamp",
[IIO_ACCEL] = "accel", [IIO_ACCEL] = "accel",
[IIO_IN] = "in", [IIO_IN] = "in",
[IIO_OUT] = "out",
[IIO_CURRENT] = "current", [IIO_CURRENT] = "current",
[IIO_POWER] = "power", [IIO_POWER] = "power",
[IIO_IN_DIFF] = "in-in", [IIO_IN_DIFF] = "in-in",
@@ -675,7 +676,8 @@ static int iio_device_add_channel_sysfs(struct iio_dev *dev_info,
else else
ret = __iio_add_chan_devattr("raw", NULL, chan, ret = __iio_add_chan_devattr("raw", NULL, chan,
&iio_read_channel_info, &iio_read_channel_info,
NULL, (chan->type == IIO_OUT ?
&iio_write_channel_info : NULL),
0, 0,
0, 0,
&dev_info->dev, &dev_info->dev,