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Input: synaptics-rmi4 - propagate correct number of rx and tx electrodes to F54

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F54 diagnostics report functions provide data based on the number of
enabled rx and tx electrodes, which is not identical to the number of
electrodes reported with F54:Query0 and F54:Query1. Those values report
the number of supported electrodes, not the number of enabled electrodes.
The number of enabled electrodes can be determined by analyzing F55:Ctrl1
(sensor receiver assignment) and F55:Ctrl2 (sensor transmitter assignment).

Propagate the number of enabled electrodes from F55 to F54 to avoid
corrupted output if not all electrodes are enabled.

Fixes: 3a762dbd53 ("[media] Input: synaptics-rmi4 - add support for F54 ...")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Nick Dyer <nick@shmanahar.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Guenter Roeck
2016-11-22 17:57:02 -08:00
committed by Dmitry Torokhov
parent 6adba43fd2
commit c762cc68b6
4 changed files with 21 additions and 4 deletions
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3
include/linux/rmi.h
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@@ -354,6 +354,9 @@ struct rmi_driver_data {
u8 pdt_props;
u8 bsr;
u8 num_rx_electrodes;
u8 num_tx_electrodes;
bool enabled;
void *data;