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Rockie's Android Porting Guide（3）——Add correct keymap to your system

2010-04-19 10:18 495 查看
Rockie's Android Porting Guide（3）——Add correct keymap to your system

Rockie Cheng

We already have a keyboard dirver in Linux kernel.
Next, let us notice
Android that we have a keyboard.

/* gpio buttons from linux*/
static struct gpio_keys_button
gpio_buttons[] = {
{
.gpio = S3C64XX_GPN(0),
.code =
116,
.desc = "ENDCALL",
.active_low = 1,
.wakeup =
0,
},
{
.gpio = S3C64XX_GPN(1),
.code = 139,
.desc
= "MENU",
.active_low = 1,
.wakeup = 0,
},
{
.gpio =
S3C64XX_GPN(2),
.code = 99,
.desc = "ROTATE",
.active_low
= 1,
.wakeup = 0,
},
{
.gpio = S3C64XX_GPN(3),

.code = 102,
.desc = "HOME",
.active_low = 1,
.wakeup =
0,
},
{
.gpio = S3C64XX_GPN(4),
.code = 42,
.desc
= "BACK",
.active_low = 1,
.wakeup = 0,
},
{
.gpio =
S3C64XX_GPN(5),
.code = 158,
.desc = "BACK",
.active_low =
1,
.wakeup = 0,
}
};

（1）Let me see logcat information.
I/EventHub( 58): New device:
path=/dev/input/event1 name=S3C TouchScreen id=0x10000 (of 0x1) index=1 fd=45
classes=0x4
E/EventHub( 58): could not get driver version for
/dev/input/mice, Not a typewriter
I/EventHub( 58): New keyboard:
publicID=65537 device->id=0x10001 devname='gpio-keys' propName='hw.keyboards.65537.devname'
keylayout='/system/usr/keylayout/qwerty.kl'
<<<<<<<<Obviously this is not wht we
want
I/EventHub( 58): New device: path=/dev/input/event0 name=gpio-keys
id=0x10001 (of 0x2) index=2 fd=47 classes=0x1
E/EventHub( 58): could not
get driver version for /dev/input/mouse0, Not a typewriter
I/KeyInputQueue(
58): Device added: id=0x0, name=gpio-keys, classes=1
I/KeyInputQueue( 58):
Device added: id=0x10000, name=S3C TouchScreen, classes=4
I/KeyInputQueue(
58): X: min=0 max=480 flat=0 fuzz=0
I/KeyInputQueue( 58): Y: min=0
max=272 flat=0 fuzz=0
I/KeyInputQueue( 58): Pressure: min=0 max=1 flat=0
fuzz=0
I/KeyInputQueue( 58): Size: unknown values
I/KeyInputQueue(
58): No virtual keys found

（2）make a file build/target/board/idea6410/gpio-keys.kl
key 158
BACK WAKE_DROPPED
key 139 MENU
WAKE_DROPPED
key 102 HOME WAKE
key 116 ENDCALL
WAKE_DROPPED
key 99 ROTATOR
key 42 POWER WAKE

（3）make another file build/target/board/idea6410/gpio-keys.kcm
First,I
just copy it from tutule2.kcm,but it does not work.
So I find this form
net,just a little change.
It seems like 9 number keyboard more than
qwerty.

[type=QWERTY]


# keycode
display number base caps fn
caps_fn


A 'A' '2' 'a' 'A' '#'
0x00
B 'B' '2' 'b' 'B' '<'
0x00
C 'C' '2' 'c' 'C' '9'
0x00E7
D 'D' '3' 'd' 'D' '5'
0x00
E 'E' '3' 'e' 'E' '2'
0x0301
F 'F' '3' 'f' 'F' '6'
0x00A5
G 'G' '4' 'g' 'G' '-'
'_'
H 'H' '4' 'h' 'H' '['
'{'
I 'I' '4' 'i' 'I' '$'
0x0302
J 'J' '5' 'j' 'J' ']'
'}'
K 'K' '5' 'k' 'K' '"'
'~'
L 'L' '5' 'l' 'L' '''
'`'
M 'M' '6' 'm' 'M' '!'
0x00
N 'N' '6' 'n' 'N' '>'
0x0303
O 'O' '6' 'o' 'O' '('
0x00
P 'P' '7' 'p' 'P' ')'
0x00
Q 'Q' '7' 'q' 'Q' '*'
0x0300
R 'R' '7' 'r' 'R' '3'
0x20AC
S 'S' '7' 's' 'S' '4'
0x00DF
T 'T' '8' 't' 'T' '+'
0x00A3
U 'U' '8' 'u' 'U' '&'
0x0308
V 'V' '8' 'v' 'V' '='
'^'
W 'W' '9' 'w' 'W' '1'
0x00
X 'X' '9' 'x' 'X' '8'
0xEF00
Y 'Y' '9' 'y' 'Y' '%'
0x00A1
Z 'Z' '9' 'z' 'Z' '7'
0x00

# on pc
keyboards
COMMA ',' ',' ',' ';' ';'
'|'
PERIOD '.' '.' '.' ':' ':'
0x2026
AT '@' '0' '@' '0' '0' 0x2022
SLASH '/'
'/' '/' '?' '?'
'/'


SPACE 0x20 0x20 0x20 0x20 0xEF01
0xEF01
ENTER 0xa 0xa 0xa 0xa 0xa
0xa


TAB 0x9 0x9 0x9 0x9 0x9
0x9
0 '0' '0' '0' ')' ')'
')'
1 '1' '1' '1' '!' '!'
'!'
2 '2' '2' '2' '@'
'@' '@'
3 '3' '3' '3' '#'
'#' '#'
4 '4' '4' '4' '$' '$'
'$'
5 '5' '5' '5' '%' '%'
'%'
6 '6' '6' '6' '^' '^'
'^'
7 '7' '7' '7' '&' '&'
'&'
8 '8' '8' '8' '*' '*'
'*'
9 '9' '9' '9' '(' '('
'('


GR***E '`' '`' '`' '~' '`'
'~'
MINUS '-' '-' '-' '_' '-'
'_'
EQUALS '=' '=' '=' '+' '='
'+'
LEFT_BRACKET '[' '[' '[' '{' '['
'{'
RIGHT_BRACKET ']' ']' ']' '}' ']'
'}'
BACKSLASH '/' '/' '/' '|' '/'
'|'
SEMICOLON ';' ';' ';' ':' ';'
':'
APOSTROPHE ''' ''' ''' '"' '''
'"'
STAR '*' '*' '*' '*' '*'
'*'
POUND '#' '#' '#' '#' '#'
'#'
PLUS '+' '+' '+' '+' '+'
'+'





（4）add these to
AndroidBoard.mk

file := $(TARGET_OUT_KEYLAYOUT)/gpio-keys.kl
ALL_PREBUILT +=
$(file)
$(file) : $(LOCAL_PATH)/gpio-keys.kl |
$(ACP)
$(transform-prebuilt-to-target)

include $(CLEAR_VARS)
LOCAL_SRC_FILES := gpio-keys.kcm
include
$(BUILD_KEY_CHAR_MAP)

（5）add these to system.prop
android.keylayout.gpio-keys =
/system/usr/keylayout/gpio-keys.kl
android.keychar.gpio-keys =
/system/usr/keychars/gpio-keys.kcm

（6）build your system again
Now we can see the different:

I/EventHub( 63): New device: path=/dev/input/event1 name=S3C TouchScreen
id=0x10000 (of 0x1) index=1 fd=50 classes=0x4
E/EventHub( 63): could not
get driver version for /dev/input/mice, Not a typewriter
E/KeyLayoutMap(
63): /system/usr/keylayout/gpio-keys.kl:10: expected keycode, got
'ROTATOR'
I/EventHub( 63): New keyboard: publicID=0 device->id=0x10001
devname='gpio-keys' propName='hw.keyboards.0.devname'
keylayout='/system/usr/keylayout/gpio-keys.kl'<<<<<<<<OK
correct!
I/EventHub( 63): New device: path=/dev/input/event0 name=gpio-keys
id=0x10001 (of 0x2) index=2 fd=52 classes=0x1
E/EventHub( 63): could not
get driver version for /dev/input/mouse0, Not a typewriter
I/KeyInputQueue(
63): Device added: id=0x0, name=gpio-keys, classes=1
I/KeyInputQueue( 63):
Device added: id=0x10000, name=S3C TouchScreen, classes=4
I/KeyInputQueue(
63): X: min=0 max=480 flat=0 fuzz=0
I/KeyInputQueue( 63): Y: min=0
max=272 flat=0 fuzz=0
I/KeyInputQueue( 63): Pressure: min=0 max=1 flat=0
fuzz=0
I/KeyInputQueue( 63): Size: unknown values
I/KeyInputQueue(
63): No virtual keys found

System do not know the word "ROTATOR" presently.
You can add a
USB-KEYBOARD too.

Rockie Cheng 阿虚

Reference:

http://www.kandroid.org/android_pdk/keymaps_keyboard_input.html

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