i.MX ProcessorsのトピックKeymap calculation in IMX6 Sololite

Keymap calculation in IMX6 Sololite

himabindu — Sun, 21 May 2017 03:52:01 GMT

Hi Team,

Currently I am working on IMX6 Sololite Linux Kernel Version 3.10.17.Can you help me in calculating the Linux keymap present in DTS file for gpio-matrix keypad driver.

Thanks & Regards,

C.Himabindu.

Re: Keymap calculation in IMX6 Sololite

igorpadykov — Sun, 21 May 2017 23:44:23 GMT

Hi Himabindu

explanation linux keypad can be found on

4x4 Matrix keypad Interfacing with i-MX6 - Toradex Community

also may be useful attached Linux Manual

Best regards
igor
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Re: Keymap calculation in IMX6 Sololite

himabindu — Sat, 15 Jul 2017 10:04:33 GMT

Hi Team,

If we dont understand the logic implemented in Matrix Keymap present in dts file we can use the following Method to initialize the

keys in dts file . This integration requires two header files namely

#include "input.h"
#include "input-event-codes.h"

                             linux,keymap = <
                        KEY(0, 0, KEY_Q)
                        KEY(0, 1, KEY_I)
                        KEY(0, 2, KEY_G)
                        KEY(0, 3, KEY_C)
                        KEY(0, 4, KEY_TAB)
                        KEY(0, 5, KEY_4)
                        KEY(0, 6, KEY_8)
                        KEY(0, 7, KEY_ENTER)
                        KEY(1, 0, KEY_W)
                        KEY(1, 1, KEY_O)
                        KEY(1, 2, KEY_H)
                        KEY(1, 3, KEY_V)
                        KEY(1, 4, KEY_1)
                        KEY(1, 5, KEY_5)
                        KEY(1, 6, KEY_9)
                        KEY(1, 7, KEY_RESERVED)
                      >;

Thanks & Regards,

C.Himabindu.