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plat: unix: correct backlight max_brightness path

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We are assuming that device has its backlight device symlinked to /sys/class/backlight/backlight so this should be stated.

Additionally any hardcoding should be disallowed and the symlink should be always used.
This commit is contained in:
CTCaer 2021-06-09 13:16:37 +03:00
parent 3647bdef0f
commit 98be8f0c22
1 changed files with 4 additions and 4 deletions
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8
frontend/drivers/platform_unix.c
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@ -1349,15 +1349,15 @@ static void frontend_unix_set_screen_brightness(int value)
char *buffer = NULL;
char svalue[16] = {0};
unsigned int max_brightness = 100;
#if !defined(HAVE_LAKKA_SWITCH)
filestream_read_file("/sys/devices/platform/backlight/backlight/backlight/max_brightness",
/* Device tree should have 'label = "backlight";' if control is desirable */
filestream_read_file("/sys/class/backlight/backlight/max_brightness",
&buffer, NULL);
if (buffer)
{
sscanf(buffer, "%u", &max_brightness);
free(buffer);
}
#endif
/* Calculate the brightness */
value = (value * max_brightness) / 100;
@ -2827,7 +2827,7 @@ frontend_ctx_driver_t frontend_ctx_unix = {
#endif
#if defined(HAVE_LAKKA_SWITCH) || (defined(HAVE_LAKKA) && defined(HAVE_ODROIDGO2))
frontend_unix_set_screen_brightness,/* set_screen_brightness */
#else
#else
NULL, /* set_screen_brightness */
#endif
frontend_unix_watch_path_for_changes,