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Input: st1232 - fix NORMAL vs. IDLE state handling

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NORMAL (0x0) and IDLE (0x4) are really two different states.  Hence you
cannot check for both using a bitmask, as that checks for IDLE only,
breaking operation for devices that are in NORMAL state.

Fix the wait function to report either state as ready.

Fixes: 6524d8eac258452e ("Input: st1232 - add IDLE state as ready condition")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.kernel.org/r/20210223090201.1430542-1-geert+renesas@glider.be
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Geert Uytterhoeven 2021-02-23 09:30:09 -08:00 committed by Dmitry Torokhov
parent cbecf716ca
commit 1bff77f41a
1 changed files with 7 additions and 2 deletions
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9
drivers/input/touchscreen/st1232.c
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@ -94,8 +94,13 @@ static int st1232_ts_wait_ready(struct st1232_ts_data *ts)
for (retries = 10; retries; retries--) {
error = st1232_ts_read_data(ts, REG_STATUS, 1);
if (!error && ts->read_buf[0] == (STATUS_NORMAL | STATUS_IDLE | ERROR_NONE))
return 0;
if (!error) {
switch (ts->read_buf[0]) {
case STATUS_NORMAL | ERROR_NONE:
case STATUS_IDLE | ERROR_NONE:
return 0;
}
}
usleep_range(1000, 2000);
}