brcm,bcm-keypad.txt

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 * Broadcom Keypad Controller device tree bindings
    2 
    3 Broadcom Keypad controller is used to interface a SoC with a matrix-type
    4 keypad device. The keypad controller supports multiple row and column lines.
    5 A key can be placed at each intersection of a unique row and a unique column.
    6 The keypad controller can sense a key-press and key-release and report the
    7 event using a interrupt to the cpu.
    8 
    9 This binding is based on the matrix-keymap binding with the following
   10 changes:
   11 
   12 keypad,num-rows and keypad,num-columns are required.
   13 
   14 Required SoC Specific Properties:
   15 - compatible: should be "brcm,bcm-keypad"
   16 
   17 - reg: physical base address of the controller and length of memory mapped
   18   region.
   19 
   20 - interrupts: The interrupt number to the cpu.
   21 
   22 Board Specific Properties:
   23 - keypad,num-rows: Number of row lines connected to the keypad
   24   controller.
   25 
   26 - keypad,num-columns: Number of column lines connected to the
   27   keypad controller.
   28 
   29 - col-debounce-filter-period: The debounce period for the Column filter.
   30 
   31         KEYPAD_DEBOUNCE_1_ms    =       0
   32         KEYPAD_DEBOUNCE_2_ms    =       1
   33         KEYPAD_DEBOUNCE_4_ms    =       2
   34         KEYPAD_DEBOUNCE_8_ms    =       3
   35         KEYPAD_DEBOUNCE_16_ms   =       4
   36         KEYPAD_DEBOUNCE_32_ms   =       5
   37         KEYPAD_DEBOUNCE_64_ms   =       6
   38         KEYPAD_DEBOUNCE_128_ms  =       7
   39 
   40 - status-debounce-filter-period: The debounce period for the Status filter.
   41 
   42         KEYPAD_DEBOUNCE_1_ms    =       0
   43         KEYPAD_DEBOUNCE_2_ms    =       1
   44         KEYPAD_DEBOUNCE_4_ms    =       2
   45         KEYPAD_DEBOUNCE_8_ms    =       3
   46         KEYPAD_DEBOUNCE_16_ms   =       4
   47         KEYPAD_DEBOUNCE_32_ms   =       5
   48         KEYPAD_DEBOUNCE_64_ms   =       6
   49         KEYPAD_DEBOUNCE_128_ms  =       7
   50 
   51 - row-output-enabled: An optional property indicating whether the row or
   52   column is being used as output. If specified the row is being used
   53   as the output. Else defaults to column.
   54 
   55 - pull-up-enabled: An optional property indicating the Keypad scan mode.
   56   If specified implies the keypad scan pull-up has been enabled.
   57 
   58 - autorepeat: Boolean, Enable auto repeat feature of Linux input
   59           subsystem (optional).
   60 
   61 - linux,keymap: The keymap for keys as described in the binding document
   62   devicetree/bindings/input/matrix-keymap.txt.
   63 
   64 Example:
   65 #include "dt-bindings/input/input.h"
   66 
   67 / {
   68         keypad: keypad@180ac000 {
   69                 /* Required SoC specific properties */
   70                 compatible = "brcm,bcm-keypad";
   71 
   72                 /* Required Board specific properties */
   73                 keypad,num-rows = <5>;
   74                 keypad,num-columns = <5>;
   75 
   76                 linux,keymap = <MATRIX_KEY(0x00, 0x02, KEY_F) /* key_forward */
   77                 MATRIX_KEY(0x00, 0x03, KEY_HOME) /* key_home */
   78                 MATRIX_KEY(0x00, 0x04, KEY_M) /* key_message */
   79                 MATRIX_KEY(0x01, 0x00, KEY_A) /* key_contacts */
   80                 MATRIX_KEY(0x01, 0x01, KEY_1) /* key_1 */
   81                 MATRIX_KEY(0x01, 0x02, KEY_2) /* key_2 */
   82                 MATRIX_KEY(0x01, 0x03, KEY_3) /* key_3 */
   83                 MATRIX_KEY(0x01, 0x04, KEY_S) /* key_speaker */
   84                 MATRIX_KEY(0x02, 0x00, KEY_P) /* key_phone */
   85                 MATRIX_KEY(0x02, 0x01, KEY_4) /* key_4 */
   86                 MATRIX_KEY(0x02, 0x02, KEY_5) /* key_5 */
   87                 MATRIX_KEY(0x02, 0x03, KEY_6) /* key_6 */
   88                 MATRIX_KEY(0x02, 0x04, KEY_VOLUMEUP) /* key_vol_up */
   89                 MATRIX_KEY(0x03, 0x00, KEY_C) /* key_call_log */
   90                 MATRIX_KEY(0x03, 0x01, KEY_7) /* key_7 */
   91                 MATRIX_KEY(0x03, 0x02, KEY_8) /* key_8 */
   92                 MATRIX_KEY(0x03, 0x03, KEY_9) /* key_9 */
   93                 MATRIX_KEY(0x03, 0x04, KEY_VOLUMEDOWN) /* key_vol_down */
   94                 MATRIX_KEY(0x04, 0x00, KEY_H) /* key_headset */
   95                 MATRIX_KEY(0x04, 0x01, KEY_KPASTERISK) /* key_* */
   96                 MATRIX_KEY(0x04, 0x02, KEY_0) /* key_0 */
   97                 MATRIX_KEY(0x04, 0x03, KEY_GRAVE) /* key_# */
   98                 MATRIX_KEY(0x04, 0x04, KEY_MUTE) /* key_mute */
   99                 >;
  100 
  101                 /* Optional board specific properties */
  102                 col-debounce-filter-period = <5>;
  103                 row-output-enabled;
  104                 pull-up-enabled;
  105 
  106         };
  107 };

Cache object: f3077a45876d1c7d99b9cf1c58090392

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/input/brcm,bcm-keypad.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/input/brcm,bcm-keypad.txt