Hammerhead: backlight issue.

Hi,

I open a main issue for nexus 5 backlight problem.

General question: So that I can work on this with most ease, can you tell what is the easiest way to recompile and flash on nexus 5 a modified version of the kernel (with just few modifications in some source files)?

Apparently the issue is that only ledA is enabled, and we also need ledB: /sys/class/backlight/lm3630a_leda exists but we should also have /sys/class/backlight/lm3630a_ledb which is currently not there.

What is very weird is that initially flto made a commit to disable ledB, by mistake according to himself, that could cause the issue: https://github.com/flto/linux/commit/72bbd453848b5aaf73b471106494ffa9064196e1

But this commit does not seem to be included in our kernel: https://gitlab.com/postmarketOS/linux-postmarketos/blob/master/drivers/video/backlight/lm3630a_bl.c

		/* default values */
		pdata->leda_ctrl = LM3630A_LEDA_ENABLE;
		pdata->ledb_ctrl = LM3630A_LEDB_ENABLE;

So for now I don't really get why we don't have ledB appearing as well as ledA.

See Also: https://github.com/flto/linux/issues/1