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| author | Frank Praznik <frank.praznik@oh.rr.com> | 2015-05-06 02:47:33 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2015-05-07 10:41:36 +0200 |
| commit | 4c3e829849cc05f82c11fe9a3c662c7e1323d6cf (patch) | |
| tree | b2b2ccbaa977067329a43ca6498e9bbb7d653454 /drivers/hid | |
| parent | HID: sony: Simplify LED initialization and eliminate redundant copies when up... (diff) | |
| download | linux-4c3e829849cc05f82c11fe9a3c662c7e1323d6cf.tar.xz linux-4c3e829849cc05f82c11fe9a3c662c7e1323d6cf.zip | |
HID: sony: Correct a typo in a HID descriptor comment and explain the odd Sixaxis axis mapping
Correct a spelling mistake in the Sixaxis HID descriptor comment.
Add an explanation as to why the Sixaxis has so many analog axes and why
some of them are seen as multi-touch axes.
Signed-off-by: Frank Praznik <frank.praznik@oh.rr.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-sony.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index 937050971ccd..aeb8b41bc5b0 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -59,9 +59,16 @@ #define MAX_LEDS 4 +/* + * The Sixaxis reports both digital and analog values for each button on the + * controller except for Start, Select and the PS button. The controller ends + * up reporting 27 axes which causes them to spill over into the multi-touch + * axis values. Additionally, the controller only has 20 actual, physical axes + * so there are several unused axes in between the used ones. + */ static __u8 sixaxis_rdesc[] = { 0x05, 0x01, /* Usage Page (Desktop), */ - 0x09, 0x04, /* Usage (Joystik), */ + 0x09, 0x04, /* Usage (Joystick), */ 0xA1, 0x01, /* Collection (Application), */ 0xA1, 0x02, /* Collection (Logical), */ 0x85, 0x01, /* Report ID (1), */ |