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| author |   Jens Thiele <karme@karme.de> | 2015-03-23 09:04:56 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-03-23 09:11:11 -0700 |
| commit | 4ed0e032c3cf27c6fabc154164d003c4e0ac4654 (patch) | |
| tree | 47d8d96c7aa31f08c835777903bda70073601254 /Documentation | |
| parent | Input: add Qualcomm PM8941 power key driver (diff) | |
| download | linux-dev-4ed0e032c3cf27c6fabc154164d003c4e0ac4654.tar.xz linux-dev-4ed0e032c3cf27c6fabc154164d003c4e0ac4654.zip | |
Input: sun4i-ts - allow controlling filter and sensitivity via DT
This commit introduces two new optional device-tree properties:
"tp-sensitive-adjust": adjust sensitivity of pen down detection
"filter-type": select median and averaging filter
The previous fixed defaults, didn't work well for the Olimex
A13-LCD10TS (I have).
Signed-off-by: Jens Thiele <karme@karme.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/sun4i.txt | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt b/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt index d59d25281e9f..89abecd938cb 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt @@ -9,8 +9,20 @@ Required properties: - #thermal-sensor-cells: shall be 0 Optional properties: - - allwinner,ts-attached: boolean indicating that an actual touchscreen is - attached to the controller + - allwinner,ts-attached : boolean indicating that an actual touchscreen + is attached to the controller + - allwinner,tp-sensitive-adjust : integer (4 bits) + adjust sensitivity of pen down detection + between 0 (least sensitive) and 15 + (defaults to 15) + - allwinner,filter-type : integer (2 bits) + select median and averaging filter + samples used for median / averaging filter + 0: 4/2 + 1: 5/3 + 2: 8/4 + 3: 16/8 + (defaults to 1) Example: @@ -20,4 +32,7 @@ Example: interrupts = <29>; allwinner,ts-attached; #thermal-sensor-cells = <0>; + /* sensitive/noisy touch panel */ + allwinner,tp-sensitive-adjust = <0>; + allwinner,filter-type = <3>; }; |