diff options
Diffstat (limited to '')
| -rw-r--r-- | minui/graphics_fbdev.cpp | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/minui/graphics_fbdev.cpp b/minui/graphics_fbdev.cpp index 746f42aaa..bb91a574d 100644 --- a/minui/graphics_fbdev.cpp +++ b/minui/graphics_fbdev.cpp @@ -31,8 +31,25 @@ MinuiBackendFbdev::MinuiBackendFbdev() : gr_draw(nullptr), fb_fd(-1) {} void MinuiBackendFbdev::Blank(bool blank) { - int ret = ioctl(fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK); - if (ret < 0) perror("ioctl(): blank"); +#if defined(TW_NO_SCREEN_BLANK) && defined(TW_BRIGHTNESS_PATH) && defined(TW_MAX_BRIGHTNESS) + int fd; + char brightness[4]; + snprintf(brightness, 4, "%03d", TW_MAX_BRIGHTNESS/2); + + fd = open(TW_BRIGHTNESS_PATH, O_RDWR); + if (fd < 0) { + perror("cannot open LCD backlight"); + return; + } + write(fd, blank ? "000" : brightness, 3); + close(fd); +#else + int ret; + + ret = ioctl(fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK); + if (ret < 0) + perror("ioctl(): blank"); +#endif } void MinuiBackendFbdev::SetDisplayedFramebuffer(unsigned n) { |