| Message ID | 20201229162601.2154566-2-geert+renesas@glider.be (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | Input: st1232 - fixes for resolution reading | expand |
On Tue, Dec 29, 2020 at 05:25:59PM +0100, Geert Uytterhoeven wrote: > Before, the maximum coordinates were fixed to (799, 479) or (319, 479), > depending on touchscreen controller type. The driver was changed to > read the actual values from the touchscreen controller, but did not take > into account the returned values are not the maximum coordinates, but > the touchscreen resolution (e.g. 800 and 480). > > Fix this by subtracting 1. > > Fixes: 3a54a215410b1650 ("Input: st1232 - add support resolution reading") > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Applied, thank you.
diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c index bda96762744e6da3..f18d4c7e03da17c6 100644 --- a/drivers/input/touchscreen/st1232.c +++ b/drivers/input/touchscreen/st1232.c @@ -85,8 +85,8 @@ static int st1232_ts_read_resolution(struct st1232_ts_data *ts, u16 *max_x, buf = ts->read_buf; - *max_x = ((buf[0] & 0x0070) << 4) | buf[1]; - *max_y = ((buf[0] & 0x0007) << 8) | buf[2]; + *max_x = (((buf[0] & 0x0070) << 4) | buf[1]) - 1; + *max_y = (((buf[0] & 0x0007) << 8) | buf[2]) - 1; return 0; }
Before, the maximum coordinates were fixed to (799, 479) or (319, 479), depending on touchscreen controller type. The driver was changed to read the actual values from the touchscreen controller, but did not take into account the returned values are not the maximum coordinates, but the touchscreen resolution (e.g. 800 and 480). Fix this by subtracting 1. Fixes: 3a54a215410b1650 ("Input: st1232 - add support resolution reading") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- drivers/input/touchscreen/st1232.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)