From 0e14235e6cfbc9b7a546d38b51c4e7ffdab41045 Mon Sep 17 00:00:00 2001 From: Liu Ying Date: Thu, 3 Jan 2013 12:25:46 -0800 Subject: Input: imx_keypad - add device tree support This patch adds device tree support for imx keypad driver. Signed-off-by: Liu Ying Signed-off-by: Dmitry Torokhov --- .../devicetree/bindings/input/imx-keypad.txt | 53 ++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/imx-keypad.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/input/imx-keypad.txt b/Documentation/devicetree/bindings/input/imx-keypad.txt new file mode 100644 index 000000000000..2ebaf7d26843 --- /dev/null +++ b/Documentation/devicetree/bindings/input/imx-keypad.txt @@ -0,0 +1,53 @@ +* Freescale i.MX Keypad Port(KPP) device tree bindings + +The KPP is designed to interface with a keypad matrix with 2-point contact +or 3-point contact keys. The KPP is designed to simplify the software task +of scanning a keypad matrix. The KPP is capable of detecting, debouncing, +and decoding one or multiple keys pressed simultaneously on a keypad. + +Required SoC Specific Properties: +- compatible: Should be "fsl,-kpp". + +- reg: Physical base address of the KPP and length of memory mapped + region. + +- interrupts: The KPP interrupt number to the CPU(s). + +- clocks: The clock provided by the SoC to the KPP. Some SoCs use dummy +clock(The clock for the KPP is provided by the SoCs automatically). + +Required Board Specific Properties: +- pinctrl-names: The definition can be found at +pinctrl/pinctrl-bindings.txt. + +- pinctrl-0: The definition can be found at +pinctrl/pinctrl-bindings.txt. + +- linux,keymap: The definition can be found at +bindings/input/matrix-keymap.txt. + +Example: +kpp: kpp@73f94000 { + compatible = "fsl,imx51-kpp", "fsl,imx21-kpp"; + reg = <0x73f94000 0x4000>; + interrupts = <60>; + clocks = <&clks 0>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_kpp_1>; + linux,keymap = <0x00000067 /* KEY_UP */ + 0x0001006c /* KEY_DOWN */ + 0x00020072 /* KEY_VOLUMEDOWN */ + 0x00030066 /* KEY_HOME */ + 0x0100006a /* KEY_RIGHT */ + 0x01010069 /* KEY_LEFT */ + 0x0102001c /* KEY_ENTER */ + 0x01030073 /* KEY_VOLUMEUP */ + 0x02000040 /* KEY_F6 */ + 0x02010042 /* KEY_F8 */ + 0x02020043 /* KEY_F9 */ + 0x02030044 /* KEY_F10 */ + 0x0300003b /* KEY_F1 */ + 0x0301003c /* KEY_F2 */ + 0x0302003d /* KEY_F3 */ + 0x03030074>; /* KEY_POWER */ +}; -- cgit v1.2.3 From 88390243a9937f9831aeba5113a8b59bb1d4411a Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Sun, 6 Jan 2013 18:32:22 -0800 Subject: Input: tegra-kbc - add support for rows/columns configuration from dt The NVIDIA's Tegra KBC has maximum 24 pins to make matrix keypad. Any pin can be configured as row or column. The maximum column pin can be 8 and maximum row pin can be 16. Remove the assumption that all first 16 pins will be used as row and remaining as columns and Add the property for configuring pins to either row or column from DT. Update the devicetree binding document accordingly. Signed-off-by: Laxman Dewangan Signed-off-by: Dmitry Torokhov --- .../bindings/input/nvidia,tegra20-kbc.txt | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/input/nvidia,tegra20-kbc.txt b/Documentation/devicetree/bindings/input/nvidia,tegra20-kbc.txt index 72683be6de35..2995fae7ee47 100644 --- a/Documentation/devicetree/bindings/input/nvidia,tegra20-kbc.txt +++ b/Documentation/devicetree/bindings/input/nvidia,tegra20-kbc.txt @@ -1,7 +1,18 @@ * Tegra keyboard controller +The key controller has maximum 24 pins to make matrix keypad. Any pin +can be configured as row or column. The maximum column pin can be 8 +and maximum row pins can be 16 for Tegra20/Tegra30. Required properties: - compatible: "nvidia,tegra20-kbc" +- reg: Register base address of KBC. +- interrupts: Interrupt number for the KBC. +- nvidia,kbc-row-pins: The KBC pins which are configured as row. This is an + array of pin numbers which is used as rows. +- nvidia,kbc-col-pins: The KBC pins which are configured as column. This is an + array of pin numbers which is used as column. +- linux,keymap: The keymap for keys as described in the binding document + devicetree/bindings/input/matrix-keymap.txt. Optional properties, in addition to those specified by the shared matrix-keyboard bindings: @@ -19,5 +30,16 @@ Example: keyboard: keyboard { compatible = "nvidia,tegra20-kbc"; reg = <0x7000e200 0x100>; + interrupts = <0 85 0x04>; nvidia,ghost-filter; + nvidia,debounce-delay-ms = <640>; + nvidia,kbc-row-pins = <0 1 2>; /* pin 0, 1, 2 as rows */ + nvidia,kbc-col-pins = <11 12 13>; /* pin 11, 12, 13 as columns */ + linux,keymap = <0x00000074 + 0x00010067 + 0x00020066 + 0x01010068 + 0x02000069 + 0x02010070 + 0x02020071>; }; -- cgit v1.2.3