iio: core: Introduce IIO_EV_DIR_NONE
For some events (e.g.: step detector) a direction does not make sense.
Add IIO_EV_DIR_NONE to be used with such events and generate sysfs event
attributes that do not contain direction.
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index 0c1e37e..1290290a 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -327,9 +327,15 @@
for_each_set_bit(i, mask, sizeof(*mask)*8) {
if (i >= ARRAY_SIZE(iio_ev_info_text))
return -EINVAL;
- postfix = kasprintf(GFP_KERNEL, "%s_%s_%s",
- iio_ev_type_text[type], iio_ev_dir_text[dir],
- iio_ev_info_text[i]);
+ if (dir != IIO_EV_DIR_NONE)
+ postfix = kasprintf(GFP_KERNEL, "%s_%s_%s",
+ iio_ev_type_text[type],
+ iio_ev_dir_text[dir],
+ iio_ev_info_text[i]);
+ else
+ postfix = kasprintf(GFP_KERNEL, "%s_%s",
+ iio_ev_type_text[type],
+ iio_ev_info_text[i]);
if (postfix == NULL)
return -ENOMEM;
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index b3a241d..52cb532 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -86,6 +86,7 @@
IIO_EV_DIR_EITHER,
IIO_EV_DIR_RISING,
IIO_EV_DIR_FALLING,
+ IIO_EV_DIR_NONE,
};
#define IIO_VAL_INT 1