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fbdev: crash on single buffering
[libpicofe.git]
/
linux
/
in_evdev.c
diff --git
a/linux/in_evdev.c
b/linux/in_evdev.c
index
7dd631e
..
23d2e2a
100644
(file)
--- a/
linux/in_evdev.c
+++ b/
linux/in_evdev.c
@@
-37,8
+37,8
@@
typedef struct {
int kc_first;
int kc_last;
unsigned int abs_count;
int kc_first;
int kc_last;
unsigned int abs_count;
- /* 16.16 multiplier to IN_ABS_RANGE */
- unsigned int abs_mult[MAX_ABS_DEVS];
+
int abs_mult[MAX_ABS_DEVS];
/* 16.16 multiplier to IN_ABS_RANGE */
+ int abs_adj[MAX_ABS_DEVS]; /* adjust for centering */
unsigned int abs_to_digital:1;
} in_evdev_t;
unsigned int abs_to_digital:1;
} in_evdev_t;
@@
-246,6
+246,7
@@
static void in_evdev_probe(void)
dist = ainfo.maximum - ainfo.minimum;
if (dist != 0)
dev->abs_mult[u] = IN_ABS_RANGE * 2 * 65536 / dist;
dist = ainfo.maximum - ainfo.minimum;
if (dist != 0)
dev->abs_mult[u] = IN_ABS_RANGE * 2 * 65536 / dist;
+ dev->abs_adj[u] = -(ainfo.maximum + ainfo.minimum + 1) / 2;
have_abs = 1;
}
dev->abs_count = u;
have_abs = 1;
}
dev->abs_count = u;
@@
-371,7
+372,8
@@
static int in_evdev_update_analog(void *drv_data, int axis_id, int *result)
if (ret != 0)
return ret;
if (ret != 0)
return ret;
- *result = (int)(ainfo.value * dev->abs_mult[axis_id]) >> 16;
+ *result = (ainfo.value + dev->abs_adj[axis_id]) * dev->abs_mult[axis_id];
+ *result >>= 16;
return 0;
}
return 0;
}