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| author | Jason Gerecke <killertofu@gmail.com> | 2015-03-11 10:25:41 -0700 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2015-03-11 13:50:04 -0400 |
| commit | 71fa641ebbfd2402bdb76d3c6ba7e4a2d1eb2dfc (patch) | |
| tree | 98f85a9921254a670904652bdf10205a5b1a149a /drivers/hid/wacom_wac.h | |
| parent | 8fac1722140019d6a53f7b280f8b785707a16f66 (diff) | |
| download | linux-71fa641ebbfd2402bdb76d3c6ba7e4a2d1eb2dfc.tar.bz2 | |
HID: wacom: Add battery presence indicator to wireless tablets
Declare the POWER_SUPPLY_PROP_PRESENT property to provide userspace
with a way to determine if the battery on a wireless tablet is plugged
in. Although current wireless tablets do not explicitly report this
information, it can be inferred from other state information. In
particular, a battery is assumed to be present if any of the following
are true: a non-zero battery level reported, the battery is reported as
charging, or the tablet is operating wirelessly.
Note: The last condition above may not strictly hold for the Graphire
Wireless (it charges from a DC barrel jack instead of a USB port), but I
do not know what is reported in the no-battery condition.
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/wacom_wac.h')
| -rw-r--r-- | drivers/hid/wacom_wac.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h index a3d0828ff8b1..1c7d8931f1fa 100644 --- a/drivers/hid/wacom_wac.h +++ b/drivers/hid/wacom_wac.h @@ -212,6 +212,7 @@ struct wacom_wac { int battery_capacity; int num_contacts_left; int bat_charging; + int bat_connected; int ps_connected; u8 bt_features; u8 bt_high_speed; |