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| author | Hans de Goede <hdegoede@redhat.com> | 2018-01-09 11:34:15 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-01-09 16:38:06 -0800 |
| commit | eca3be9b95ac7cf9442654a54962859d74f8e38a (patch) | |
| tree | 452598cef9ff09899f99e12e07856f12afbc58c6 /Documentation/devicetree/bindings/input | |
| parent | da7bdec455b160771f0343e38dc538791f2b2a99 (diff) | |
| download | linux-eca3be9b95ac7cf9442654a54962859d74f8e38a.tar.bz2 | |
Input: silead - add support for capactive home button found on some x86 tablets
On some x86 tablets with a silead touchscreen the windows logo on the
front is a capacitive home button. Touching this button results in a touch
with bits 12-15 of the Y coordinates set, while normally only the lower 12
are used.
Detect this and report a KEY_LEFTMETA press when this happens. Note for
now we only respond to the Y coordinate bits 12-15 containing 0x01, on some
tablets *without* a capacative button I've noticed these bits containing
0x04 when crossing the edges of the screen.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/input')
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt b/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt index 6aa625e0cb8d..84752de12412 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt @@ -23,6 +23,8 @@ Optional properties: - touchscreen-inverted-y : See touchscreen.txt - touchscreen-swapped-x-y : See touchscreen.txt - silead,max-fingers : maximum number of fingers the touchscreen can detect +- silead,home-button : Boolean, set to true on devices which have a + capacitive home-button build into the touchscreen - vddio-supply : regulator phandle for controller VDDIO - avdd-supply : regulator phandle for controller AVDD |