diff options
| author | Patrick Rudolph <siro@das-labor.org> | 2017-07-01 17:37:06 +0200 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-07-07 17:19:09 +0000 |
| commit | b21f5d708afe417cef8894a58c162ff50f987822 (patch) | |
| tree | b4578388ec545b39584b8217359a8359862941c8 /src/ec | |
| parent | f8574bf4a7627228b9cdd14aa77589ac5b355c08 (diff) | |
ec/lenovo/h8/smm: Support USB always on AC only
Add support for UAO AC only mode.
Needs tests on all platforms.
Change-Id: Ib52aab427ff687b00129024cde65b78060d21e32
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/20450
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Diffstat (limited to 'src/ec')
| -rw-r--r-- | src/ec/lenovo/h8/smm.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/src/ec/lenovo/h8/smm.c b/src/ec/lenovo/h8/smm.c index 31009a6926..6005c31033 100644 --- a/src/ec/lenovo/h8/smm.c +++ b/src/ec/lenovo/h8/smm.c @@ -18,18 +18,30 @@ #include "h8.h" +enum usb_always_on { + UAO_OFF = 0, + UAO_AC_AND_BATTERY, + UAO_AC_ONLY +}; + void h8_usb_always_on(void) { - u8 val; + enum usb_always_on val; u8 reg; if (get_option(&val, "usb_always_on") != CB_SUCCESS) - val = 0; + val = UAO_OFF; - if (val) { + if (val == UAO_AC_AND_BATTERY) { reg = ec_read(H8_USB_ALWAYS_ON); reg &= ~H8_USB_ALWAYS_ON_AC_ONLY; reg |= H8_USB_ALWAYS_ON_ENABLE; ec_write(H8_USB_ALWAYS_ON, reg); + } else if (val == UAO_AC_ONLY) { + reg = ec_read(H8_USB_ALWAYS_ON); + reg |= H8_USB_ALWAYS_ON_AC_ONLY; + reg |= H8_USB_ALWAYS_ON_ENABLE; + ec_write(H8_USB_ALWAYS_ON, reg); + ec_set_bit(0x2, 3); } } |