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authorRobert Dolca <robert.dolca@intel.com>2016-07-28 14:28:46 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2016-08-02 23:37:49 -0700
commit3197704cae5e00d9c78563d2fa4647b576a49fef (patch)
treec4dd55d15f11209261934702d607601032136480 /Documentation
parent014420fe8865e981331024ef0cef14d1e29102a3 (diff)
downloadlinux-3197704cae5e00d9c78563d2fa4647b576a49fef.tar.bz2
Input: add driver for Silead touchscreens
This driver adds support for Silead touchscreens. It has been tested with GSL1680 and GSL3680 touch panels. It supports ACPI and device tree enumeration. Screen resolution, the maximum number of fingers supported and firmware name are configurable. Signed-off-by: Robert Dolca <robert.dolca@intel.com> Signed-off-by: Daniel Jansen <djaniboe@gmail.com> Signed-off-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/silead_gsl1680.txt36
1 files changed, 36 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt b/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt
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+* GSL 1680 touchscreen controller
+
+Required properties:
+- compatible : "silead,gsl1680"
+- reg : I2C slave address of the chip (0x40)
+- interrupt-parent : a phandle pointing to the interrupt controller
+ serving the interrupt for this chip
+- interrupts : interrupt specification for the gsl1680 interrupt
+- power-gpios : Specification for the pin connected to the gsl1680's
+ shutdown input. This needs to be driven high to take the
+ gsl1680 out of its low power state
+- touchscreen-size-x : See touchscreen.txt
+- touchscreen-size-y : See touchscreen.txt
+
+Optional properties:
+- touchscreen-inverted-x : See touchscreen.txt
+- touchscreen-inverted-y : See touchscreen.txt
+- touchscreen-swapped-x-y : See touchscreen.txt
+- silead,max-fingers : maximum number of fingers the touchscreen can detect
+
+Example:
+
+i2c@00000000 {
+ gsl1680: touchscreen@40 {
+ compatible = "silead,gsl1680";
+ reg = <0x40>;
+ interrupt-parent = <&pio>;
+ interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
+ power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>;
+ touchscreen-size-x = <480>;
+ touchscreen-size-y = <800>;
+ touchscreen-inverted-x;
+ touchscreen-swapped-x-y;
+ silead,max-fingers = <5>;
+ };
+};