diff options
| author | Dario Binacchi <dariobin@libero.it> | 2021-12-12 21:14:35 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-12-19 23:52:32 -0800 |
| commit | 73cca71a903202cddc8279fc76b2da4995da5bea (patch) | |
| tree | 03c7d3c0bfdb1db506502b776ae3fe212e2bb7f1 /drivers/input/touchscreen | |
| parent | 046612a3f592044762789ec086feb2cdaaf393f6 (diff) | |
Input: ti_am335x_tsc - set ADCREFM for X configuration
As reported by the STEPCONFIG[1-16] registered field descriptions of the
TI reference manual, for the ADC "in single ended, SEL_INM_SWC_3_0 must
be 1xxx".
Unlike the Y and Z coordinates, this bit has not been set for the step
configuration registers used to sample the X coordinate.
Fixes: 1b8be32e6914 ("Input: add support for TI Touchscreen controller")
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Link: https://lore.kernel.org/r/20211212125358.14416-2-dariobin@libero.it
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen')
| -rw-r--r-- | drivers/input/touchscreen/ti_am335x_tsc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c index 83e685557a19..fd3ffdd23470 100644 --- a/drivers/input/touchscreen/ti_am335x_tsc.c +++ b/drivers/input/touchscreen/ti_am335x_tsc.c @@ -131,7 +131,8 @@ static void titsc_step_config(struct titsc *ts_dev) u32 stepenable; config = STEPCONFIG_MODE_HWSYNC | - STEPCONFIG_AVG_16 | ts_dev->bit_xp; + STEPCONFIG_AVG_16 | ts_dev->bit_xp | + STEPCONFIG_INM_ADCREFM; switch (ts_dev->wires) { case 4: config |= STEPCONFIG_INP(ts_dev->inp_yp) | ts_dev->bit_xn; |