input: Allow repeat filtering to be disabled
Generally the input library handles processing of a list of scanned keys.
Repeated keys need to be generated based on a timer in this case, since all
that is provided is a list of keys current depressed.
Keyboards which do their own scanning will resend codes when they want to
inject a repeating key. Provide a function which tells the input library to
accept repeating keys and not to try to second-guess the caller.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 530bf51..fc1c45c 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -413,8 +413,8 @@
* insert another character if we later realise that we
* have missed a repeat slot.
*/
- is_repeat = config->repeat_rate_ms &&
- (int)get_timer(config->next_repeat_ms) >= 0;
+ is_repeat = config->allow_repeats || (config->repeat_rate_ms &&
+ (int)get_timer(config->next_repeat_ms) >= 0);
if (!is_repeat)
return 0;
}
@@ -495,6 +495,11 @@
config->repeat_rate_ms = repeat_rate_ms;
}
+void input_allow_repeats(struct input_config *config, bool allow_repeats)
+{
+ config->allow_repeats = allow_repeats;
+}
+
int input_add_tables(struct input_config *config)
{
int ret;
diff --git a/include/input.h b/include/input.h
index 9942d6f..e56f500 100644
--- a/include/input.h
+++ b/include/input.h
@@ -57,6 +57,7 @@
* unknown
*/
int (*read_keys)(struct input_config *config);
+ bool allow_repeats; /* Don't filter out repeats */
unsigned int next_repeat_ms; /* Next time we repeat a key */
unsigned int repeat_delay_ms; /* Time before autorepeat starts */
unsigned int repeat_rate_ms; /* Autorepeat rate in ms */
@@ -143,6 +144,24 @@
int repeat_rate_ms);
/**
+ * Tell the input layer whether to allow the caller to determine repeats
+ *
+ * Generally the input library handles processing of a list of scanned keys.
+ * Repeated keys need to be generated based on a timer in this case, since all
+ * that is provided is a list of keys current depressed.
+ *
+ * Keyboards which do their own scanning will resend codes when they want to
+ * inject a repeating key. This function can be called at start-up to select
+ * this behaviour.
+ *
+ * @param config Input state
+ * @param allow_repeats true to repeat depressed keys every time
+ * input_send_keycodes() is called, false to do normal
+ * keyboard repeat processing with a timer.
+ */
+void input_allow_repeats(struct input_config *config, bool allow_repeats);
+
+/**
* Set up the key map tables
*
* This must be called after input_init() or keycode decoding will not work.