From 287685932e53849192020092bce7d7a21d9e2a71 Mon Sep 17 00:00:00 2001 From: Sebastian Leonhardt Date: Tue, 28 Jun 2016 02:05:25 +0200 Subject: [PATCH] Fix lcd not waking up when backlight is always off This patch is relevant for targets with a transflective display. If the backlight was set to "always off" (e.g. to use the lcd in a pure passive way), and the sleep timer ran off, the LCD would stay disabled and didn't wake up when a button is pressed. Change-Id: I0a157c7f421d9fc4c7d8ba903f2cf93f6cef51d0 --- firmware/backlight.c | 4 ++++ firmware/export/backlight.h | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/firmware/backlight.c b/firmware/backlight.c index 3acc89c27c..caff55ce5e 100644 --- a/firmware/backlight.c +++ b/firmware/backlight.c @@ -499,6 +499,10 @@ static void backlight_update_state(void) if (UNLIKELY(timeout < 0)) { do_backlight_off(); +#if defined(HAVE_TRANSFLECTIVE_LCD) && defined(HAVE_LCD_SLEEP) + /* LCD must be enabled to allow "passive" operation (backlight always off) */ + lcd_awake(); +#endif #if (CONFIG_BACKLIGHT_FADING == BACKLIGHT_FADING_SW_SETTING) \ || (CONFIG_BACKLIGHT_FADING == BACKLIGHT_FADING_SW_HW_REG) /* necessary step to issue fading down when the setting is selected */ diff --git a/firmware/export/backlight.h b/firmware/export/backlight.h index 6d029790b3..326de4ce28 100644 --- a/firmware/export/backlight.h +++ b/firmware/export/backlight.h @@ -64,6 +64,10 @@ void lcd_set_sleep_after_backlight_off(int timeout_seconds); void lcd_awake(void); #endif +#ifdef HAVE_LCD_SLEEP +void lcd_awake(void); +#endif + #else /* !HAVE_BACKLIGHT */ #define backlight_init() #endif /* !HAVE_BACKLIGHT */