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Input: st1232 - add IDLE state as ready condition

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The st1232 can switch from NORMAL to IDLE state after the configured
idle time (by default 8 s). If the st1232 is not reset during probe, it
might already be ready but in IDLE state. Since it does not enter NORMAL
state in this case, probe fails.

Fix the wait function to report the IDLE state as ready, too.

Fixes: f605be6a57 ("Input: st1232 - wait until device is ready before reading resolution")
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.kernel.org/r/20210219110556.1858969-1-m.tretter@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Michael Tretter 2021-02-19 10:37:00 -08:00 committed by Dmitry Torokhov
parent 42ffcd1dba
commit 6524d8eac2
1 changed files with 1 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/input/touchscreen/st1232.c
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@ -94,7 +94,7 @@ static int st1232_ts_wait_ready(struct st1232_ts_data *ts)
for (retries = 10; retries; retries--) { for (retries = 10; retries; retries--) {
error = st1232_ts_read_data(ts, REG_STATUS, 1); error = st1232_ts_read_data(ts, REG_STATUS, 1);
if (!error && ts->read_buf[0] == (STATUS_NORMAL | ERROR_NONE)) if (!error && ts->read_buf[0] == (STATUS_NORMAL | STATUS_IDLE | ERROR_NONE))
return 0; return 0;
usleep_range(1000, 2000); usleep_range(1000, 2000);