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authorGabriel FERNANDEZ <gabriel.fernandez@st.com>2014-04-12 13:45:50 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-05-14 16:39:46 -0700
commit062589b1399176a9c14bc68e16169f40439d658c (patch)
treee6fe88257d21891bb1ebad17c010b232c59ec4af /Documentation/devicetree/bindings
parentc898620869dd061e69f84e69759e4d6ea7fae79c (diff)
Input: add st-keyscan driver
This patch adds ST Keyscan driver to use the keypad hw a subset of ST boards provide. Specific board setup will be put in the given dt. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@linaro.org> Signed-off-by: Giuseppe Condorelli <giuseppe.condorelli@st.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings')
-rw-r--r--Documentation/devicetree/bindings/input/st-keyscan.txt60
1 files changed, 60 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/st-keyscan.txt b/Documentation/devicetree/bindings/input/st-keyscan.txt
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+++ b/Documentation/devicetree/bindings/input/st-keyscan.txt
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+* ST Keyscan controller Device Tree bindings
+
+The ST keyscan controller Device Tree binding is based on the
+matrix-keymap.
+
+Required properties:
+- compatible: "st,sti-keyscan"
+
+- reg: Register base address and size of st-keyscan controller.
+
+- interrupts: Interrupt number for the st-keyscan controller.
+
+- clocks: Must contain one entry, for the module clock.
+ See ../clocks/clock-bindings.txt for details.
+
+- pinctrl: Should specify pin control groups used for this controller.
+ See ../pinctrl/pinctrl-bindings.txt for details.
+
+- linux,keymap: The keymap for keys as described in the binding document
+ devicetree/bindings/input/matrix-keymap.txt.
+
+- keypad,num-rows: Number of row lines connected to the keypad controller.
+
+- keypad,num-columns: Number of column lines connected to the keypad
+ controller.
+
+Optional property:
+- st,debounce_us: Debouncing interval time in microseconds
+
+Example:
+
+keyscan: keyscan@fe4b0000 {
+ compatible = "st,sti-keyscan";
+ reg = <0xfe4b0000 0x2000>;
+ interrupts = <GIC_SPI 212 IRQ_TYPE_NONE>;
+ clocks = <&CLK_SYSIN>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_keyscan>;
+
+ keypad,num-rows = <4>;
+ keypad,num-columns = <4>;
+ st,debounce_us = <5000>;
+
+ linux,keymap = < MATRIX_KEY(0x00, 0x00, KEY_F13)
+ MATRIX_KEY(0x00, 0x01, KEY_F9)
+ MATRIX_KEY(0x00, 0x02, KEY_F5)
+ MATRIX_KEY(0x00, 0x03, KEY_F1)
+ MATRIX_KEY(0x01, 0x00, KEY_F14)
+ MATRIX_KEY(0x01, 0x01, KEY_F10)
+ MATRIX_KEY(0x01, 0x02, KEY_F6)
+ MATRIX_KEY(0x01, 0x03, KEY_F2)
+ MATRIX_KEY(0x02, 0x00, KEY_F15)
+ MATRIX_KEY(0x02, 0x01, KEY_F11)
+ MATRIX_KEY(0x02, 0x02, KEY_F7)
+ MATRIX_KEY(0x02, 0x03, KEY_F3)
+ MATRIX_KEY(0x03, 0x00, KEY_F16)
+ MATRIX_KEY(0x03, 0x01, KEY_F12)
+ MATRIX_KEY(0x03, 0x02, KEY_F8)
+ MATRIX_KEY(0x03, 0x03, KEY_F4) >;
+ };

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