About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / devicetree / bindings / input / qcom,pm8xxx-keypad.txt




Custom Search

Based on kernel version 3.16. Page generated on 2014-08-06 21:37 EST.

1	Qualcomm PM8xxx PMIC Keypad
2	
3	PROPERTIES
4	
5	- compatible:
6		Usage: required
7		Value type: <string>
8		Definition: must be one of:
9			    "qcom,pm8058-keypad"
10			    "qcom,pm8921-keypad"
11	
12	- reg:
13		Usage: required
14		Value type: <prop-encoded-array>
15		Definition: address of keypad control register
16	
17	- interrupts:
18		Usage: required
19		Value type: <prop-encoded-array>
20		Definition: the first interrupt specifies the key sense interrupt
21			    and the second interrupt specifies the key stuck interrupt.
22			    The format of the specifier is defined by the binding
23			    document describing the node's interrupt parent.
24	
25	- linux,keymap:
26		Usage: required
27		Value type: <prop-encoded-array>
28		Definition: the linux keymap. More information can be found in
29			    input/matrix-keymap.txt.
30	
31	- linux,keypad-no-autorepeat:
32		Usage: optional
33		Value type: <bool>
34		Definition: don't enable autorepeat feature.
35	
36	- linux,keypad-wakeup:
37		Usage: optional
38		Value type: <bool>
39		Definition: use any event on keypad as wakeup event.
40	
41	- keypad,num-rows:
42		Usage: required
43		Value type: <u32>
44		Definition: number of rows in the keymap. More information can be found
45			    in input/matrix-keymap.txt.
46	
47	- keypad,num-columns:
48		Usage: required
49		Value type: <u32>
50		Definition: number of columns in the keymap. More information can be
51			    found in input/matrix-keymap.txt.
52	
53	- debounce:
54		Usage: optional
55		Value type: <u32>
56		Definition: time in microseconds that key must be pressed or release
57			    for key sense interrupt to trigger.
58	
59	- scan-delay:
60		Usage: optional
61		Value type: <u32>
62		Definition: time in microseconds to pause between successive scans
63			    of the matrix array.
64	
65	- row-hold:
66		Usage: optional
67		Value type: <u32>
68		Definition: time in nanoseconds to pause between scans of each row in
69			    the matrix array.
70	
71	EXAMPLE
72	
73		keypad@148 {
74			compatible = "qcom,pm8921-keypad";
75			reg = <0x148>;
76			interrupt-parent = <&pmicintc>;
77			interrupts = <74 1>, <75 1>;
78			linux,keymap = <
79				MATRIX_KEY(0, 0, KEY_VOLUMEUP)
80				MATRIX_KEY(0, 1, KEY_VOLUMEDOWN)
81				MATRIX_KEY(0, 2, KEY_CAMERA_FOCUS)
82				MATRIX_KEY(0, 3, KEY_CAMERA)
83				>;
84			keypad,num-rows = <1>;
85			keypad,num-columns = <5>;
86			debounce = <15>;
87			scan-delay = <32>;
88			row-hold = <91500>;
89		};
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.