powermgmt: Remove CURRENT_USB

CURRENT_USB overrides CURRENT_NORMAL when USB is plugged.
It defaults to 2 mA and wasn't defined on any target, but
this doesn't make sense to me. After all, the current
drawn by the CPU or other components won't change just
because USB was plugged in.

As far as I can tell, the only side effect of removing
this is reducing the estimated USB charging current.
This might mean CURRENT_MAX_CHG should be increased by
CURRENT_NORMAL on some (all?) targets to compensate,
but I'm not sure which targets would be affected.

Change-Id: I5aa5c3893ae1e4ce6b8803ab4e8c897d534eb08f

1 files changed, 0 insertions, 12 deletions

diff --git a/firmware/powermgmt.c b/firmware/powermgmt.c
index abcd32f814..e455127496 100644
--- a/firmware/powermgmt.c
+++ b/firmware/powermgmt.c
@@ -190,18 +190,6 @@ int battery_current(void)
     int current = CURRENT_NORMAL;
 
 #ifndef BOOTLOADER
-    if (usb_inserted()
-#ifdef HAVE_USB_POWER
-    #if (CURRENT_USB < CURRENT_NORMAL)
-       || usb_powered_only()
-    #else
-       && !usb_powered_only()
-    #endif
-#endif
-    ) {
-        current = CURRENT_USB;
-    }
-
 #if defined(HAVE_BACKLIGHT) && defined(CURRENT_BACKLIGHT)
     if (backlight_get_current_timeout() == 0) /* LED always on */
         current += CURRENT_BACKLIGHT;