iio: core: Remove IIO_EV_TYPE_INSTANCE

By introducing IIO_EV_TYPE_CHANGE, IIO_EV_TYPE_INSTANCE becomes redundant.
The effect of IIO_EV_TYPE_INSTANCE can be obtained by using IIO_EV_TYPE_CHANGE
with IIO_EV_INFO_VALUE set to 1.

Remove all instances of IIO_EV_TYPE_INSTANCE and replace them with
IIO_EV_TYPE_CHANGE where needed.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/industrialio-event.c

@@ -197,7 +197,6 @@ static const char * const iio_ev_type_text[] = {
 	[IIO_EV_TYPE_ROC] = "roc",
 	[IIO_EV_TYPE_THRESH_ADAPTIVE] = "thresh_adaptive",
 	[IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive",
-	[IIO_EV_TYPE_INSTANCE] = "instance",
 	[IIO_EV_TYPE_CHANGE] = "change",
 };
 

drivers/staging/iio/Documentation/iio_event_monitor.c

@@ -59,7 +59,6 @@ static const char * const iio_ev_type_text[] = {
 	[IIO_EV_TYPE_ROC] = "roc",
 	[IIO_EV_TYPE_THRESH_ADAPTIVE] = "thresh_adaptive",
 	[IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive",
-	[IIO_EV_TYPE_INSTANCE] = "instance",
 	[IIO_EV_TYPE_CHANGE] = "change",
 };
 
@@ -179,7 +178,6 @@ static bool event_is_known(struct iio_event_data *event)
 	case IIO_EV_TYPE_ROC:
 	case IIO_EV_TYPE_THRESH_ADAPTIVE:
 	case IIO_EV_TYPE_MAG_ADAPTIVE:
-	case IIO_EV_TYPE_INSTANCE:
 	case IIO_EV_TYPE_CHANGE:
 		break;
 	default:

drivers/staging/iio/iio_simple_dummy.c

@@ -73,7 +73,7 @@ static const struct iio_event_spec iio_dummy_event = {
  * simple step detect event - triggered when a step is detected
  */
 static const struct iio_event_spec step_detect_event = {
-	.type = IIO_EV_TYPE_INSTANCE,
+	.type = IIO_EV_TYPE_CHANGE,
 	.dir = IIO_EV_DIR_NONE,
 	.mask_separate = BIT(IIO_EV_INFO_ENABLE),
 };

drivers/staging/iio/iio_simple_dummy_events.c

@@ -86,7 +86,7 @@ int iio_simple_dummy_write_event_config(struct iio_dev *indio_dev,
 		}
 	case IIO_STEPS:
 		switch (type) {
-		case IIO_EV_TYPE_INSTANCE:
+		case IIO_EV_TYPE_CHANGE:
 			st->event_en = state;
 			break;
 		default:
@@ -201,7 +201,7 @@ static irqreturn_t iio_simple_dummy_event_handler(int irq, void *private)
 		iio_push_event(indio_dev,
 			       IIO_EVENT_CODE(IIO_STEPS, 0, IIO_NO_MOD,
 					      IIO_EV_DIR_NONE,
-					      IIO_EV_TYPE_INSTANCE, 0, 0, 0),
+					      IIO_EV_TYPE_CHANGE, 0, 0, 0),
 			       iio_get_time_ns());
 		break;
 	default:

include/linux/iio/types.h

@@ -78,7 +78,6 @@ enum iio_event_type {
 	IIO_EV_TYPE_ROC,
 	IIO_EV_TYPE_THRESH_ADAPTIVE,
 	IIO_EV_TYPE_MAG_ADAPTIVE,
-	IIO_EV_TYPE_INSTANCE,
 	IIO_EV_TYPE_CHANGE,
 };