ab8500-bm: Add usb power path support

AB8540 supports power path function in USB charging mode for fast
power up with dead and weak battery, and it could extend
the battery age.

When USB charging starts, if the Vbattrue is below than SW cut off
voltage, power path and pre-charge should be enabled. If Vbattrue
is higher than SW cut off voltage, power path and pre-charge should
be disabled. This is to make sure full current to battery charge.
At the end of charge, power path should be enable again to reduce
charging the battery again.

Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h
index 188aedc322c2..cd71d8eadf50 100644
--- a/include/linux/mfd/abx500.h
+++ b/include/linux/mfd/abx500.h
@@ -267,6 +267,7 @@ struct abx500_bm_data {
         bool autopower_cfg;
         bool ac_enabled;
         bool usb_enabled;
+        bool usb_power_path;
         bool no_maintenance;
         bool capacity_scaling;
         bool chg_unknown_bat;