Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0929066e authored by Ethan Chen's avatar Ethan Chen
Browse files

minui: Allow devices to blank/unblank using LCD backlight 

* Some devices rely on the LCD backlight to blank/unblank the display,
  support them by allowing a custom LCD backlight path to be used.

Change-Id: I8406b4b55cd7a2afc4f8f8ba65de2c53b949489d
parent 2457cc01

minui/Android.mk

+4 −0
Original line number Diff line number Diff line
@@ -35,6 +35,10 @@ ifneq ($(BOARD_USE_CUSTOM_RECOVERY_FONT),) 
  LOCAL_CFLAGS += -DBOARD_USE_CUSTOM_RECOVERY_FONT=$(BOARD_USE_CUSTOM_RECOVERY_FONT)

endif



ifneq ($(TARGET_RECOVERY_LCD_BACKLIGHT_PATH),)

  LOCAL_CFLAGS += -DRECOVERY_LCD_BACKLIGHT_PATH=$(TARGET_RECOVERY_LCD_BACKLIGHT_PATH)

endif



# Some devices need kernel headers for graphics

ifeq ($(TARGET_PREBUILT_KERNEL),)

  LOCAL_ADDITIONAL_DEPENDENCIES := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr

minui/graphics.c

+12 −0
Original line number Diff line number Diff line
@@ -426,9 +426,21 @@ gr_pixel *gr_fb_data(void) 


void gr_fb_blank(bool blank)

{

#ifdef RECOVERY_LCD_BACKLIGHT_PATH

    int fd;



    fd = open(RECOVERY_LCD_BACKLIGHT_PATH, O_RDWR);

    if (fd < 0) {

        perror("cannot open LCD backlight");

        return;

    }

    write(fd, blank ? "000" : "127", 3);

    close(fd);

#else

    int ret;



    ret = ioctl(gr_fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);

    if (ret < 0)

        perror("ioctl(): blank");

#endif

}