Add a function which returns a new keyboard LED value when the LEDs need updating.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: None Changes in v2: None
drivers/input/input.c | 9 +++++++++ include/input.h | 14 +++++++++++++- 2 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/input/input.c b/drivers/input/input.c index a8a15c9..bf1acdc 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -276,6 +276,7 @@ static struct input_key_xlate *process_modifier(struct input_config *config, if (config->flags & FLAG_SCROLL_LOCK) leds |= INPUT_LED_SCROLL; config->leds = leds; + config->leds_changed = flip; } }
@@ -587,6 +588,14 @@ void input_allow_repeats(struct input_config *config, bool allow_repeats) config->allow_repeats = allow_repeats; }
+int input_leds_changed(struct input_config *config) +{ + if (config->leds_changed) + return config->leds; + + return -1; +} + int input_add_tables(struct input_config *config, bool german) { struct kbd_entry *entry; diff --git a/include/input.h b/include/input.h index c1af259..ad120e4 100644 --- a/include/input.h +++ b/include/input.h @@ -43,7 +43,8 @@ struct input_config { /* Which modifiers are active (1 bit for each MOD_... value) */ uchar modifiers; uchar flags; /* active state keys (FLAGS_...) */ - uchar leds; /* active LEDS (INPUT_LED_...) */ + uchar leds; /* active LEDs (INPUT_LED_...) */ + uchar leds_changed; /* LEDs that just changed */ uchar num_tables; /* number of modifier tables */ int prev_keycodes[INPUT_BUFFER_LEN]; /* keys held last time */ int num_prev_keycodes; /* number of prev keys */ @@ -162,6 +163,17 @@ void input_set_delays(struct input_config *config, int repeat_delay_ms, void input_allow_repeats(struct input_config *config, bool allow_repeats);
/** + * Check if keyboard LEDs need to be updated + * + * This can be called after input_tstc() to see if keyboard LEDs need + * updating. + * + * @param config Input state + * @return -1 if no LEDs need updating, other value if they do + */ +int input_leds_changed(struct input_config *config); + +/** * Set up the key map tables * * This must be called after input_init() or keycode decoding will not work.