diff options
| author | Anton Lindqvist <anton@cvs.openbsd.org> | 2021-09-01 10:41:40 +0000 |
|---|---|---|
| committer | Anton Lindqvist <anton@cvs.openbsd.org> | 2021-09-01 10:41:40 +0000 |
| commit | 21369d9fdf4619c60872a98e37a04fc97912389e (patch) | |
| tree | 89b268081f5c949a022393bf5e2398a4a2bbb2f8 /sys/dev/hid | |
| parent | e4158bce64461d221590bd49fb34cc3d83cc0681 (diff) | |
Add support for the more rare volume usage which differs compared to the
more common volume increment/decrement usages in which each volume
change direction is represented using a distinct usage. The volume usage
instead uses bits of the interrupt buffer to represent the wanted
volume. The same bits should be within the bounds given by the logical
min/max associated with the HID item. However, the volume is not
interpreted as an absolute value but rather just looking at the sign bit
in order to determine the volume change direction.
I couldn't find any documentation of this usage and the implementation is
therefore solely based on analysing actual data from Richard Toohey's
<richardjtoohey at gmail dot com> Dell keyboard.
Diffstat (limited to 'sys/dev/hid')
| -rw-r--r-- | sys/dev/hid/hid.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/dev/hid/hid.h b/sys/dev/hid/hid.h index 06f6350ed75..28de534124e 100644 --- a/sys/dev/hid/hid.h +++ b/sys/dev/hid/hid.h @@ -1,4 +1,4 @@ -/* $OpenBSD: hid.h,v 1.8 2021/08/20 05:19:08 anton Exp $ */ +/* $OpenBSD: hid.h,v 1.9 2021/09/01 10:41:39 anton Exp $ */ /* $NetBSD: hid.h,v 1.8 2002/07/11 21:14:25 augustss Exp $ */ /* $FreeBSD: src/sys/dev/usb/hid.h,v 1.7 1999/11/17 22:33:40 n_hibma Exp $ */ @@ -401,6 +401,7 @@ int hid_is_collection(const void *, int, uint8_t, int32_t); #define HUC_TRACK_PREV 0x00b6 #define HUC_STOP 0x00b7 #define HUC_PLAY_PAUSE 0x00cd +#define HUC_VOLUME 0x00e0 #define HUC_MUTE 0x00e2 #define HUC_VOL_INC 0x00e9 #define HUC_VOL_DEC 0x00ea |