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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt')
-rw-r--r-- | kernel/Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt b/kernel/Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt new file mode 100644 index 000000000..b77f50bd6 --- /dev/null +++ b/kernel/Documentation/devicetree/bindings/input/brcm,bcm-keypad.txt @@ -0,0 +1,108 @@ +* Broadcom Keypad Controller device tree bindings + +Broadcom Keypad controller is used to interface a SoC with a matrix-type +keypad device. The keypad controller supports multiple row and column lines. +A key can be placed at each intersection of a unique row and a unique column. +The keypad controller can sense a key-press and key-release and report the +event using a interrupt to the cpu. + +This binding is based on the matrix-keymap binding with the following +changes: + +keypad,num-rows and keypad,num-columns are required. + +Required SoC Specific Properties: +- compatible: should be "brcm,bcm-keypad" + +- reg: physical base address of the controller and length of memory mapped + region. + +- interrupts: The interrupt number to the cpu. + +Board Specific Properties: +- keypad,num-rows: Number of row lines connected to the keypad + controller. + +- keypad,num-columns: Number of column lines connected to the + keypad controller. + +- col-debounce-filter-period: The debounce period for the Column filter. + + KEYPAD_DEBOUNCE_1_ms = 0 + KEYPAD_DEBOUNCE_2_ms = 1 + KEYPAD_DEBOUNCE_4_ms = 2 + KEYPAD_DEBOUNCE_8_ms = 3 + KEYPAD_DEBOUNCE_16_ms = 4 + KEYPAD_DEBOUNCE_32_ms = 5 + KEYPAD_DEBOUNCE_64_ms = 6 + KEYPAD_DEBOUNCE_128_ms = 7 + +- status-debounce-filter-period: The debounce period for the Status filter. + + KEYPAD_DEBOUNCE_1_ms = 0 + KEYPAD_DEBOUNCE_2_ms = 1 + KEYPAD_DEBOUNCE_4_ms = 2 + KEYPAD_DEBOUNCE_8_ms = 3 + KEYPAD_DEBOUNCE_16_ms = 4 + KEYPAD_DEBOUNCE_32_ms = 5 + KEYPAD_DEBOUNCE_64_ms = 6 + KEYPAD_DEBOUNCE_128_ms = 7 + +- row-output-enabled: An optional property indicating whether the row or + column is being used as output. If specified the row is being used + as the output. Else defaults to column. + +- pull-up-enabled: An optional property indicating the Keypad scan mode. + If specified implies the keypad scan pull-up has been enabled. + +- autorepeat: Boolean, Enable auto repeat feature of Linux input + subsystem (optional). + +- linux,keymap: The keymap for keys as described in the binding document + devicetree/bindings/input/matrix-keymap.txt. + +Example: +#include "dt-bindings/input/input.h" + +/ { + keypad: keypad@180ac000 { + /* Required SoC specific properties */ + compatible = "brcm,bcm-keypad"; + + /* Required Board specific properties */ + keypad,num-rows = <5>; + keypad,num-columns = <5>; + status = "okay"; + + linux,keymap = <MATRIX_KEY(0x00, 0x02, KEY_F) /* key_forward */ + MATRIX_KEY(0x00, 0x03, KEY_HOME) /* key_home */ + MATRIX_KEY(0x00, 0x04, KEY_M) /* key_message */ + MATRIX_KEY(0x01, 0x00, KEY_A) /* key_contacts */ + MATRIX_KEY(0x01, 0x01, KEY_1) /* key_1 */ + MATRIX_KEY(0x01, 0x02, KEY_2) /* key_2 */ + MATRIX_KEY(0x01, 0x03, KEY_3) /* key_3 */ + MATRIX_KEY(0x01, 0x04, KEY_S) /* key_speaker */ + MATRIX_KEY(0x02, 0x00, KEY_P) /* key_phone */ + MATRIX_KEY(0x02, 0x01, KEY_4) /* key_4 */ + MATRIX_KEY(0x02, 0x02, KEY_5) /* key_5 */ + MATRIX_KEY(0x02, 0x03, KEY_6) /* key_6 */ + MATRIX_KEY(0x02, 0x04, KEY_VOLUMEUP) /* key_vol_up */ + MATRIX_KEY(0x03, 0x00, KEY_C) /* key_call_log */ + MATRIX_KEY(0x03, 0x01, KEY_7) /* key_7 */ + MATRIX_KEY(0x03, 0x02, KEY_8) /* key_8 */ + MATRIX_KEY(0x03, 0x03, KEY_9) /* key_9 */ + MATRIX_KEY(0x03, 0x04, KEY_VOLUMEDOWN) /* key_vol_down */ + MATRIX_KEY(0x04, 0x00, KEY_H) /* key_headset */ + MATRIX_KEY(0x04, 0x01, KEY_KPASTERISK) /* key_* */ + MATRIX_KEY(0x04, 0x02, KEY_0) /* key_0 */ + MATRIX_KEY(0x04, 0x03, KEY_GRAVE) /* key_# */ + MATRIX_KEY(0x04, 0x04, KEY_MUTE) /* key_mute */ + >; + + /* Optional board specific properties */ + col-debounce-filter-period = <5>; + row-output-enabled; + pull-up-enabled; + + }; +}; |