diff options
Diffstat (limited to 'Documentation/input')
| -rw-r--r-- | Documentation/input/alps.txt | 2 | ||||
| -rw-r--r-- | Documentation/input/event-codes.txt | 11 |
2 files changed, 12 insertions, 1 deletions
diff --git a/Documentation/input/alps.txt b/Documentation/input/alps.txt index 9b1084c8c0b3..e544c7ff8cfa 100644 --- a/Documentation/input/alps.txt +++ b/Documentation/input/alps.txt @@ -161,7 +161,7 @@ number of contacts (f1 and f0 in the table below). This packet only appears after a position packet with the mt bit set, and usually only appears when there are two or more contacts (although -occassionally it's seen with only a single contact). +occasionally it's seen with only a single contact). The final v3 packet type is the trackstick packet. diff --git a/Documentation/input/event-codes.txt b/Documentation/input/event-codes.txt index 53305bd08182..f1ea2c69648d 100644 --- a/Documentation/input/event-codes.txt +++ b/Documentation/input/event-codes.txt @@ -196,6 +196,17 @@ EV_MSC: EV_MSC events are used for input and output events that do not fall under other categories. +A few EV_MSC codes have special meaning: + +* MSC_TIMESTAMP: + - Used to report the number of microseconds since the last reset. This event + should be coded as an uint32 value, which is allowed to wrap around with + no special consequence. It is assumed that the time difference between two + consecutive events is reliable on a reasonable time scale (hours). + A reset to zero can happen, in which case the time since the last event is + unknown. If the device does not provide this information, the driver must + not provide it to user space. + EV_LED: ---------- EV_LED events are used for input and output to set and query the state of |