event: new event request helpers

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>

diff --git a/include/gpiod.h b/include/gpiod.h
index f6cfefdd22350648257777a00ad994e12a53c1bc..132f979c5160b37fe80d47e32f4db5dd68bfe89d 100644 (file)
--- a/include/gpiod.h
+++ b/include/gpiod.h
@@ -635,6 +635,51 @@ struct gpiod_line_event {
 int gpiod_line_event_request(struct gpiod_line *line,
                             struct gpiod_line_evreq_config *config) GPIOD_API;
 
+static inline int _gpiod_line_event_request_type(struct gpiod_line *line,
+                                                const char *consumer,
+                                                bool active_low,
+                                                int type)
+{
+       struct gpiod_line_evreq_config config = {
+               .consumer = consumer,
+               .event_type = type,
+               .active_state = active_low ? GPIOD_ACTIVE_STATE_LOW
+                                          : GPIOD_ACTIVE_STATE_HIGH,
+       };
+
+       return gpiod_line_event_request(line, &config);
+}
+
+/**
+ * @brief Request rising edge event notifications on a single line.
+ * @param line GPIO line object.
+ * @param consumer Name of the consumer.
+ * @param active_low Active state of the line - true if low.
+ * @return 0 if the operation succeeds, -1 on failure.
+ */
+static inline int gpiod_line_event_request_rising(struct gpiod_line *line,
+                                                 const char *consumer,
+                                                 bool active_low)
+{
+       return _gpiod_line_event_request_type(line, consumer, active_low,
+                                             GPIOD_EVENT_RISING_EDGE);
+}
+
+/**
+ * @brief Request falling edge event notifications on a single line.
+ * @param line GPIO line object.
+ * @param consumer Name of the consumer.
+ * @param active_low Active state of the line - true if low.
+ * @return 0 if the operation succeeds, -1 on failure.
+ */
+static inline int gpiod_line_event_request_falling(struct gpiod_line *line,
+                                                  const char *consumer,
+                                                  bool active_low)
+{
+       return _gpiod_line_event_request_type(line, consumer, active_low,
+                                             GPIOD_EVENT_FALLING_EDGE);
+}
+
 /**
  * @brief Request all event type notifications on a single line.
  * @param line GPIO line object.
@@ -646,14 +691,8 @@ static inline int gpiod_line_event_request_all(struct gpiod_line *line,
                                               const char *consumer,
                                               bool active_low)
 {
-       struct gpiod_line_evreq_config config = {
-               .consumer = consumer,
-               .event_type = GPIOD_EVENT_BOTH_EDGES,
-               .active_state = active_low ? GPIOD_ACTIVE_STATE_LOW
-                                          : GPIOD_ACTIVE_STATE_HIGH,
-       };
-
-       return gpiod_line_event_request(line, &config);
+       return _gpiod_line_event_request_type(line, consumer, active_low,
+                                             GPIOD_EVENT_BOTH_EDGES);
 }
 
 /**