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/*
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* $ Id : ir - common . c , v 1.10 2005 / 05 / 22 19 : 23 : 39 nsh Exp $
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*
* some common structs and functions to handle infrared remotes via
* input layer . . .
*
* ( c ) 2003 Gerd Knorr < kraxel @ bytesex . org > [ SuSE Labs ]
*
* This program is free software ; you can redistribute it and / or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation ; either version 2 of the License , or
* ( at your option ) any later version .
*
* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
*
* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software
* Foundation , Inc . , 59 Temple Place , Suite 330 , Boston , MA 02111 - 1307 USA
*/
# include <linux/module.h>
# include <linux/moduleparam.h>
# include <media/ir-common.h>
/* -------------------------------------------------------------------------- */
MODULE_AUTHOR ( " Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] " ) ;
MODULE_LICENSE ( " GPL " ) ;
static int repeat = 1 ;
module_param ( repeat , int , 0444 ) ;
MODULE_PARM_DESC ( repeat , " auto-repeat for IR keys (default: on) " ) ;
static int debug = 0 ; /* debug level (0,1,2) */
module_param ( debug , int , 0644 ) ;
# define dprintk(level, fmt, arg...) if (debug >= level) \
printk ( KERN_DEBUG fmt , # # arg )
/* -------------------------------------------------------------------------- */
/* generic RC5 keytable */
/* see http://users.pandora.be/nenya/electronics/rc5/codes00.htm */
/* used by old (black) Hauppauge remotes */
IR_KEYTAB_TYPE ir_codes_rc5_tv [ IR_KEYTAB_SIZE ] = {
[ 0x00 ] = KEY_KP0 , // 0
[ 0x01 ] = KEY_KP1 , // 1
[ 0x02 ] = KEY_KP2 , // 2
[ 0x03 ] = KEY_KP3 , // 3
[ 0x04 ] = KEY_KP4 , // 4
[ 0x05 ] = KEY_KP5 , // 5
[ 0x06 ] = KEY_KP6 , // 6
[ 0x07 ] = KEY_KP7 , // 7
[ 0x08 ] = KEY_KP8 , // 8
[ 0x09 ] = KEY_KP9 , // 9
[ 0x0b ] = KEY_CHANNEL , // channel / program (japan: 11)
[ 0x0c ] = KEY_POWER , // standby
[ 0x0d ] = KEY_MUTE , // mute / demute
[ 0x0f ] = KEY_TV , // display
[ 0x10 ] = KEY_VOLUMEUP , // volume +
[ 0x11 ] = KEY_VOLUMEDOWN , // volume -
[ 0x12 ] = KEY_BRIGHTNESSUP , // brightness +
[ 0x13 ] = KEY_BRIGHTNESSDOWN , // brightness -
[ 0x1e ] = KEY_SEARCH , // search +
[ 0x20 ] = KEY_CHANNELUP , // channel / program +
[ 0x21 ] = KEY_CHANNELDOWN , // channel / program -
[ 0x22 ] = KEY_CHANNEL , // alt / channel
[ 0x23 ] = KEY_LANGUAGE , // 1st / 2nd language
[ 0x26 ] = KEY_SLEEP , // sleeptimer
[ 0x2e ] = KEY_MENU , // 2nd controls (USA: menu)
[ 0x30 ] = KEY_PAUSE , // pause
[ 0x32 ] = KEY_REWIND , // rewind
[ 0x33 ] = KEY_GOTO , // go to
[ 0x35 ] = KEY_PLAY , // play
[ 0x36 ] = KEY_STOP , // stop
[ 0x37 ] = KEY_RECORD , // recording
[ 0x3c ] = KEY_TEXT , // teletext submode (Japan: 12)
[ 0x3d ] = KEY_SUSPEND , // system standby
#if 0 /* FIXME */
[ 0x0a ] = KEY_RESERVED , // 1/2/3 digits (japan: 10)
[ 0x0e ] = KEY_RESERVED , // P.P. (personal preference)
[ 0x14 ] = KEY_RESERVED , // colour saturation +
[ 0x15 ] = KEY_RESERVED , // colour saturation -
[ 0x16 ] = KEY_RESERVED , // bass +
[ 0x17 ] = KEY_RESERVED , // bass -
[ 0x18 ] = KEY_RESERVED , // treble +
[ 0x19 ] = KEY_RESERVED , // treble -
[ 0x1a ] = KEY_RESERVED , // balance right
[ 0x1b ] = KEY_RESERVED , // balance left
[ 0x1c ] = KEY_RESERVED , // contrast +
[ 0x1d ] = KEY_RESERVED , // contrast -
[ 0x1f ] = KEY_RESERVED , // tint/hue +
[ 0x24 ] = KEY_RESERVED , // spacial stereo on/off
[ 0x25 ] = KEY_RESERVED , // mono / stereo (USA)
[ 0x27 ] = KEY_RESERVED , // tint / hue -
[ 0x28 ] = KEY_RESERVED , // RF switch/PIP select
[ 0x29 ] = KEY_RESERVED , // vote
[ 0x2a ] = KEY_RESERVED , // timed page/channel clck
[ 0x2b ] = KEY_RESERVED , // increment (USA)
[ 0x2c ] = KEY_RESERVED , // decrement (USA)
[ 0x2d ] = KEY_RESERVED , //
[ 0x2f ] = KEY_RESERVED , // PIP shift
[ 0x31 ] = KEY_RESERVED , // erase
[ 0x34 ] = KEY_RESERVED , // wind
[ 0x38 ] = KEY_RESERVED , // external 1
[ 0x39 ] = KEY_RESERVED , // external 2
[ 0x3a ] = KEY_RESERVED , // PIP display mode
[ 0x3b ] = KEY_RESERVED , // view data mode / advance
[ 0x3e ] = KEY_RESERVED , // crispener on/off
[ 0x3f ] = KEY_RESERVED , // system select
# endif
} ;
EXPORT_SYMBOL_GPL ( ir_codes_rc5_tv ) ;
/* Table for Leadtek Winfast Remote Controls - used by both bttv and cx88 */
IR_KEYTAB_TYPE ir_codes_winfast [ IR_KEYTAB_SIZE ] = {
[ 5 ] = KEY_KP1 ,
[ 6 ] = KEY_KP2 ,
[ 7 ] = KEY_KP3 ,
[ 9 ] = KEY_KP4 ,
[ 10 ] = KEY_KP5 ,
[ 11 ] = KEY_KP6 ,
[ 13 ] = KEY_KP7 ,
[ 14 ] = KEY_KP8 ,
[ 15 ] = KEY_KP9 ,
[ 18 ] = KEY_KP0 ,
[ 0 ] = KEY_POWER ,
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// [ 27 ] = MTS button
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[ 2 ] = KEY_TUNER , // TV/FM
[ 30 ] = KEY_VIDEO ,
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// [ 22 ] = display button
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[ 4 ] = KEY_VOLUMEUP ,
[ 8 ] = KEY_VOLUMEDOWN ,
[ 12 ] = KEY_CHANNELUP ,
[ 16 ] = KEY_CHANNELDOWN ,
[ 3 ] = KEY_ZOOM , // fullscreen
[ 31 ] = KEY_SUBTITLE , // closed caption/teletext
[ 32 ] = KEY_SLEEP ,
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// [ 41 ] = boss key
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[ 20 ] = KEY_MUTE ,
[ 43 ] = KEY_RED ,
[ 44 ] = KEY_GREEN ,
[ 45 ] = KEY_YELLOW ,
[ 46 ] = KEY_BLUE ,
[ 24 ] = KEY_KPPLUS , //fine tune +
[ 25 ] = KEY_KPMINUS , //fine tune -
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// [ 42 ] = picture in picture
[ 33 ] = KEY_KPDOT ,
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[ 19 ] = KEY_KPENTER ,
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// [ 17 ] = recall
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[ 34 ] = KEY_BACK ,
[ 35 ] = KEY_PLAYPAUSE ,
[ 36 ] = KEY_NEXT ,
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// [ 37 ] = time shifting
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[ 38 ] = KEY_STOP ,
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[ 39 ] = KEY_RECORD
// [ 40 ] = snapshot
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} ;
EXPORT_SYMBOL_GPL ( ir_codes_winfast ) ;
/* empty keytable, can be used as placeholder for not-yet created keytables */
IR_KEYTAB_TYPE ir_codes_empty [ IR_KEYTAB_SIZE ] = {
[ 42 ] = KEY_COFFEE ,
} ;
EXPORT_SYMBOL_GPL ( ir_codes_empty ) ;
/* Hauppauge: the newer, gray remotes (seems there are multiple
* slightly different versions ) , shipped with cx88 + ivtv cards .
* almost rc5 coding , but some non - standard keys */
IR_KEYTAB_TYPE ir_codes_hauppauge_new [ IR_KEYTAB_SIZE ] = {
[ 0x00 ] = KEY_KP0 , // 0
[ 0x01 ] = KEY_KP1 , // 1
[ 0x02 ] = KEY_KP2 , // 2
[ 0x03 ] = KEY_KP3 , // 3
[ 0x04 ] = KEY_KP4 , // 4
[ 0x05 ] = KEY_KP5 , // 5
[ 0x06 ] = KEY_KP6 , // 6
[ 0x07 ] = KEY_KP7 , // 7
[ 0x08 ] = KEY_KP8 , // 8
[ 0x09 ] = KEY_KP9 , // 9
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[ 0x0a ] = KEY_TEXT , // keypad asterisk as well
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[ 0x0b ] = KEY_RED , // red button
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[ 0x0c ] = KEY_RADIO , // radio
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[ 0x0d ] = KEY_MENU , // menu
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[ 0x0e ] = KEY_SUBTITLE , // also the # key
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[ 0x0f ] = KEY_MUTE , // mute
[ 0x10 ] = KEY_VOLUMEUP , // volume +
[ 0x11 ] = KEY_VOLUMEDOWN , // volume -
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[ 0x12 ] = KEY_PREVIOUS , // previous channel
[ 0x14 ] = KEY_UP , // up
[ 0x15 ] = KEY_DOWN , // down
[ 0x16 ] = KEY_LEFT , // left
[ 0x17 ] = KEY_RIGHT , // right
[ 0x18 ] = KEY_VIDEO , // Videos
[ 0x19 ] = KEY_AUDIO , // Music
[ 0x1a ] = KEY_MHP , // Pictures - presume this means "Multimedia Home Platform"- no "PICTURES" key in input.h
[ 0x1b ] = KEY_EPG , // Guide
[ 0x1c ] = KEY_TV , // TV
[ 0x1e ] = KEY_NEXTSONG , // skip >|
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[ 0x1f ] = KEY_EXIT , // back/exit
[ 0x20 ] = KEY_CHANNELUP , // channel / program +
[ 0x21 ] = KEY_CHANNELDOWN , // channel / program -
[ 0x22 ] = KEY_CHANNEL , // source (old black remote)
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[ 0x24 ] = KEY_PREVIOUSSONG , // replay |<
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[ 0x25 ] = KEY_ENTER , // OK
[ 0x26 ] = KEY_SLEEP , // minimize (old black remote)
[ 0x29 ] = KEY_BLUE , // blue key
[ 0x2e ] = KEY_GREEN , // green button
[ 0x30 ] = KEY_PAUSE , // pause
[ 0x32 ] = KEY_REWIND , // backward <<
[ 0x34 ] = KEY_FASTFORWARD , // forward >>
[ 0x35 ] = KEY_PLAY , // play
[ 0x36 ] = KEY_STOP , // stop
[ 0x37 ] = KEY_RECORD , // recording
[ 0x38 ] = KEY_YELLOW , // yellow key
[ 0x3b ] = KEY_SELECT , // top right button
[ 0x3c ] = KEY_ZOOM , // full
[ 0x3d ] = KEY_POWER , // system power (green button)
} ;
EXPORT_SYMBOL ( ir_codes_hauppauge_new ) ;
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IR_KEYTAB_TYPE ir_codes_pixelview [ IR_KEYTAB_SIZE ] = {
[ 2 ] = KEY_KP0 ,
[ 1 ] = KEY_KP1 ,
[ 11 ] = KEY_KP2 ,
[ 27 ] = KEY_KP3 ,
[ 5 ] = KEY_KP4 ,
[ 9 ] = KEY_KP5 ,
[ 21 ] = KEY_KP6 ,
[ 6 ] = KEY_KP7 ,
[ 10 ] = KEY_KP8 ,
[ 18 ] = KEY_KP9 ,
[ 3 ] = KEY_TUNER , // TV/FM
[ 7 ] = KEY_SEARCH , // scan
[ 28 ] = KEY_ZOOM , // full screen
[ 30 ] = KEY_POWER ,
[ 23 ] = KEY_VOLUMEDOWN ,
[ 31 ] = KEY_VOLUMEUP ,
[ 20 ] = KEY_CHANNELDOWN ,
[ 22 ] = KEY_CHANNELUP ,
[ 24 ] = KEY_MUTE ,
[ 0 ] = KEY_LIST , // source
[ 19 ] = KEY_INFO , // loop
[ 16 ] = KEY_LAST , // +100
[ 13 ] = KEY_CLEAR , // reset
[ 12 ] = BTN_RIGHT , // fun++
[ 4 ] = BTN_LEFT , // fun--
[ 14 ] = KEY_GOTO , // function
[ 15 ] = KEY_STOP , // freeze
} ;
EXPORT_SYMBOL ( ir_codes_pixelview ) ;
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/* -------------------------------------------------------------------------- */
static void ir_input_key_event ( struct input_dev * dev , struct ir_input_state * ir )
{
if ( KEY_RESERVED = = ir - > keycode ) {
printk ( KERN_INFO " %s: unknown key: key=0x%02x raw=0x%02x down=%d \n " ,
dev - > name , ir - > ir_key , ir - > ir_raw , ir - > keypressed ) ;
return ;
}
dprintk ( 1 , " %s: key event code=%d down=%d \n " ,
dev - > name , ir - > keycode , ir - > keypressed ) ;
input_report_key ( dev , ir - > keycode , ir - > keypressed ) ;
input_sync ( dev ) ;
}
/* -------------------------------------------------------------------------- */
void ir_input_init ( struct input_dev * dev , struct ir_input_state * ir ,
int ir_type , IR_KEYTAB_TYPE * ir_codes )
{
int i ;
ir - > ir_type = ir_type ;
if ( ir_codes )
memcpy ( ir - > ir_codes , ir_codes , sizeof ( ir - > ir_codes ) ) ;
init_input_dev ( dev ) ;
dev - > keycode = ir - > ir_codes ;
dev - > keycodesize = sizeof ( IR_KEYTAB_TYPE ) ;
dev - > keycodemax = IR_KEYTAB_SIZE ;
for ( i = 0 ; i < IR_KEYTAB_SIZE ; i + + )
set_bit ( ir - > ir_codes [ i ] , dev - > keybit ) ;
clear_bit ( 0 , dev - > keybit ) ;
set_bit ( EV_KEY , dev - > evbit ) ;
if ( repeat )
set_bit ( EV_REP , dev - > evbit ) ;
}
void ir_input_nokey ( struct input_dev * dev , struct ir_input_state * ir )
{
if ( ir - > keypressed ) {
ir - > keypressed = 0 ;
ir_input_key_event ( dev , ir ) ;
}
}
void ir_input_keydown ( struct input_dev * dev , struct ir_input_state * ir ,
u32 ir_key , u32 ir_raw )
{
u32 keycode = IR_KEYCODE ( ir - > ir_codes , ir_key ) ;
if ( ir - > keypressed & & ir - > keycode ! = keycode ) {
ir - > keypressed = 0 ;
ir_input_key_event ( dev , ir ) ;
}
if ( ! ir - > keypressed ) {
ir - > ir_key = ir_key ;
ir - > ir_raw = ir_raw ;
ir - > keycode = keycode ;
ir - > keypressed = 1 ;
ir_input_key_event ( dev , ir ) ;
}
#if 0
/* maybe do something like this ??? */
input_event ( a , EV_IR , ir - > ir_type , ir - > ir_raw ) ;
# endif
}
/* -------------------------------------------------------------------------- */
u32 ir_extract_bits ( u32 data , u32 mask )
{
int mbit , vbit ;
u32 value ;
value = 0 ;
vbit = 0 ;
for ( mbit = 0 ; mbit < 32 ; mbit + + ) {
if ( ! ( mask & ( ( u32 ) 1 < < mbit ) ) )
continue ;
if ( data & ( ( u32 ) 1 < < mbit ) )
value | = ( 1 < < vbit ) ;
vbit + + ;
}
return value ;
}
static int inline getbit ( u32 * samples , int bit )
{
return ( samples [ bit / 32 ] & ( 1 < < ( 31 - ( bit % 32 ) ) ) ) ? 1 : 0 ;
}
/* sump raw samples for visual debugging ;) */
int ir_dump_samples ( u32 * samples , int count )
{
int i , bit , start ;
printk ( KERN_DEBUG " ir samples: " ) ;
start = 0 ;
for ( i = 0 ; i < count * 32 ; i + + ) {
bit = getbit ( samples , i ) ;
if ( bit )
start = 1 ;
if ( 0 = = start )
continue ;
printk ( " %s " , bit ? " # " : " _ " ) ;
}
printk ( " \n " ) ;
return 0 ;
}
/* decode raw samples, biphase coding, used by rc5 for example */
int ir_decode_biphase ( u32 * samples , int count , int low , int high )
{
int i , last , bit , len , flips ;
u32 value ;
/* find start bit (1) */
for ( i = 0 ; i < 32 ; i + + ) {
bit = getbit ( samples , i ) ;
if ( bit )
break ;
}
/* go decoding */
len = 0 ;
flips = 0 ;
value = 1 ;
for ( ; i < count * 32 ; i + + ) {
if ( len > high )
break ;
if ( flips > 1 )
break ;
last = bit ;
bit = getbit ( samples , i ) ;
if ( last = = bit ) {
len + + ;
continue ;
}
if ( len < low ) {
len + + ;
flips + + ;
continue ;
}
value < < = 1 ;
value | = bit ;
flips = 0 ;
len = 1 ;
}
return value ;
}
EXPORT_SYMBOL_GPL ( ir_input_init ) ;
EXPORT_SYMBOL_GPL ( ir_input_nokey ) ;
EXPORT_SYMBOL_GPL ( ir_input_keydown ) ;
EXPORT_SYMBOL_GPL ( ir_extract_bits ) ;
EXPORT_SYMBOL_GPL ( ir_dump_samples ) ;
EXPORT_SYMBOL_GPL ( ir_decode_biphase ) ;
/*
* Local variables :
* c - basic - offset : 8
* End :
*/
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