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touch: Add edge compensation

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Switch touch panels have a 10-15px offset around the edges.
(10-1269, 10-709) / (15-1264, 15-704)
This allows touch driver to report a max of 0-1279, 0-719.
This commit is contained in:
CTCaer 2020-03-03 04:28:12 +02:00
parent f3802ec464
commit ab8801d0de
1 changed files with 27 additions and 0 deletions
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27
nyx/nyx_gui/input/touch.c
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@ -44,6 +44,28 @@ static int touch_command(u8 cmd)
return 0;
}
#define X_REAL_MAX 1264
#define Y_REAL_MAX 704
#define EDGE_OFFSET 15
static void _touch_compensate_limits(touch_event *event, bool touching)
{
event->x = MAX(event->x, EDGE_OFFSET);
event->x = MIN(event->x, X_REAL_MAX);
event->x -= EDGE_OFFSET;
u32 x_adj = (1280 * 1000) / (X_REAL_MAX - EDGE_OFFSET);
event->x = ((u32)event->x * x_adj) / 1000;
if (touching)
{
event->y = MAX(event->y, EDGE_OFFSET);
event->y = MIN(event->y, Y_REAL_MAX);
event->y -= EDGE_OFFSET;
u32 y_adj = (720 * 1000) / (Y_REAL_MAX - EDGE_OFFSET);
event->y = ((u32)event->y * y_adj) / 1000;
}
}
static void _touch_process_contact_event(touch_event *event, bool touching)
{
event->x = (event->raw[2] << 4) | ((event->raw[4] & STMFTS_MASK_Y_LSB) >> 4);
@ -58,6 +80,8 @@ static void _touch_process_contact_event(touch_event *event, bool touching)
}
else
event->fingers = 0;
_touch_compensate_limits(event, touching);
}
static void _touch_parse_event(touch_event *event)
@ -186,6 +210,9 @@ int touch_power_on()
if (touch_command(STMFTS_SS_HOVER_SENSE_OFF))
return 0;
if (touch_command(STMFTS_MS_KEY_SENSE_OFF))
return 0;
return 1;
}