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Input: hgpk - extend jumpiness detection

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In addition to forcing recalibrations upon detection of cursor jumps (and
performing them quicker than before), detect and discard errant 'jump'
packets caused by a firmware bug, which are then repeated with each one
being approximately half the delta of the one previously (as if it is
averaging out)

Based on original work by Paul Fox.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Daniel Drake
2010-11-11 22:20:03 -08:00
committed by Dmitry Torokhov
parent c0dc834265
commit a309cdc778
2 changed files with 88 additions and 20 deletions
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2
drivers/input/mouse/hgpk.h
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@@ -42,6 +42,8 @@ struct hgpk_data {
struct delayed_work recalib_wq;
int abs_x, abs_y;
int dupe_count;
int xbigj, ybigj, xlast, ylast; /* jumpiness detection */
int xsaw_secondary, ysaw_secondary; /* jumpiness detection */
};
#define hgpk_dbg(psmouse, format, arg...) \