1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
382 lines
12 KiB
C
382 lines
12 KiB
C
/*
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* $Id: ir-common.c,v 1.8 2005/02/22 12:28:40 kraxel Exp $
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*
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* some common structs and functions to handle infrared remotes via
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* input layer ...
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*
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* (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <media/ir-common.h>
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/* -------------------------------------------------------------------------- */
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MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
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MODULE_LICENSE("GPL");
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static int repeat = 1;
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module_param(repeat, int, 0444);
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MODULE_PARM_DESC(repeat,"auto-repeat for IR keys (default: on)");
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static int debug = 0; /* debug level (0,1,2) */
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module_param(debug, int, 0644);
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#define dprintk(level, fmt, arg...) if (debug >= level) \
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printk(KERN_DEBUG fmt , ## arg)
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/* -------------------------------------------------------------------------- */
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/* generic RC5 keytable */
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/* see http://users.pandora.be/nenya/electronics/rc5/codes00.htm */
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/* used by old (black) Hauppauge remotes */
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IR_KEYTAB_TYPE ir_codes_rc5_tv[IR_KEYTAB_SIZE] = {
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[ 0x00 ] = KEY_KP0, // 0
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[ 0x01 ] = KEY_KP1, // 1
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[ 0x02 ] = KEY_KP2, // 2
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[ 0x03 ] = KEY_KP3, // 3
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[ 0x04 ] = KEY_KP4, // 4
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[ 0x05 ] = KEY_KP5, // 5
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[ 0x06 ] = KEY_KP6, // 6
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[ 0x07 ] = KEY_KP7, // 7
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[ 0x08 ] = KEY_KP8, // 8
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[ 0x09 ] = KEY_KP9, // 9
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[ 0x0b ] = KEY_CHANNEL, // channel / program (japan: 11)
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[ 0x0c ] = KEY_POWER, // standby
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[ 0x0d ] = KEY_MUTE, // mute / demute
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[ 0x0f ] = KEY_TV, // display
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[ 0x10 ] = KEY_VOLUMEUP, // volume +
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[ 0x11 ] = KEY_VOLUMEDOWN, // volume -
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[ 0x12 ] = KEY_BRIGHTNESSUP, // brightness +
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[ 0x13 ] = KEY_BRIGHTNESSDOWN, // brightness -
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[ 0x1e ] = KEY_SEARCH, // search +
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[ 0x20 ] = KEY_CHANNELUP, // channel / program +
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[ 0x21 ] = KEY_CHANNELDOWN, // channel / program -
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[ 0x22 ] = KEY_CHANNEL, // alt / channel
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[ 0x23 ] = KEY_LANGUAGE, // 1st / 2nd language
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[ 0x26 ] = KEY_SLEEP, // sleeptimer
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[ 0x2e ] = KEY_MENU, // 2nd controls (USA: menu)
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[ 0x30 ] = KEY_PAUSE, // pause
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[ 0x32 ] = KEY_REWIND, // rewind
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[ 0x33 ] = KEY_GOTO, // go to
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[ 0x35 ] = KEY_PLAY, // play
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[ 0x36 ] = KEY_STOP, // stop
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[ 0x37 ] = KEY_RECORD, // recording
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[ 0x3c ] = KEY_TEXT, // teletext submode (Japan: 12)
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[ 0x3d ] = KEY_SUSPEND, // system standby
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#if 0 /* FIXME */
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[ 0x0a ] = KEY_RESERVED, // 1/2/3 digits (japan: 10)
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[ 0x0e ] = KEY_RESERVED, // P.P. (personal preference)
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[ 0x14 ] = KEY_RESERVED, // colour saturation +
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[ 0x15 ] = KEY_RESERVED, // colour saturation -
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[ 0x16 ] = KEY_RESERVED, // bass +
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[ 0x17 ] = KEY_RESERVED, // bass -
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[ 0x18 ] = KEY_RESERVED, // treble +
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[ 0x19 ] = KEY_RESERVED, // treble -
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[ 0x1a ] = KEY_RESERVED, // balance right
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[ 0x1b ] = KEY_RESERVED, // balance left
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[ 0x1c ] = KEY_RESERVED, // contrast +
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[ 0x1d ] = KEY_RESERVED, // contrast -
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[ 0x1f ] = KEY_RESERVED, // tint/hue +
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[ 0x24 ] = KEY_RESERVED, // spacial stereo on/off
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[ 0x25 ] = KEY_RESERVED, // mono / stereo (USA)
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[ 0x27 ] = KEY_RESERVED, // tint / hue -
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[ 0x28 ] = KEY_RESERVED, // RF switch/PIP select
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[ 0x29 ] = KEY_RESERVED, // vote
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[ 0x2a ] = KEY_RESERVED, // timed page/channel clck
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[ 0x2b ] = KEY_RESERVED, // increment (USA)
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[ 0x2c ] = KEY_RESERVED, // decrement (USA)
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[ 0x2d ] = KEY_RESERVED, //
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[ 0x2f ] = KEY_RESERVED, // PIP shift
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[ 0x31 ] = KEY_RESERVED, // erase
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[ 0x34 ] = KEY_RESERVED, // wind
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[ 0x38 ] = KEY_RESERVED, // external 1
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[ 0x39 ] = KEY_RESERVED, // external 2
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[ 0x3a ] = KEY_RESERVED, // PIP display mode
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[ 0x3b ] = KEY_RESERVED, // view data mode / advance
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[ 0x3e ] = KEY_RESERVED, // crispener on/off
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[ 0x3f ] = KEY_RESERVED, // system select
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#endif
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};
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EXPORT_SYMBOL_GPL(ir_codes_rc5_tv);
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/* Table for Leadtek Winfast Remote Controls - used by both bttv and cx88 */
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IR_KEYTAB_TYPE ir_codes_winfast[IR_KEYTAB_SIZE] = {
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[ 5 ] = KEY_KP1,
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[ 6 ] = KEY_KP2,
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[ 7 ] = KEY_KP3,
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[ 9 ] = KEY_KP4,
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[ 10 ] = KEY_KP5,
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[ 11 ] = KEY_KP6,
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[ 13 ] = KEY_KP7,
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[ 14 ] = KEY_KP8,
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[ 15 ] = KEY_KP9,
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[ 18 ] = KEY_KP0,
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[ 0 ] = KEY_POWER,
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// [ 27 ] = MTS button
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[ 2 ] = KEY_TUNER, // TV/FM
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[ 30 ] = KEY_VIDEO,
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// [ 22 ] = display button
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[ 4 ] = KEY_VOLUMEUP,
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[ 8 ] = KEY_VOLUMEDOWN,
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[ 12 ] = KEY_CHANNELUP,
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[ 16 ] = KEY_CHANNELDOWN,
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[ 3 ] = KEY_ZOOM, // fullscreen
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[ 31 ] = KEY_SUBTITLE, // closed caption/teletext
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[ 32 ] = KEY_SLEEP,
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// [ 41 ] = boss key
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[ 20 ] = KEY_MUTE,
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[ 43 ] = KEY_RED,
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[ 44 ] = KEY_GREEN,
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[ 45 ] = KEY_YELLOW,
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[ 46 ] = KEY_BLUE,
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[ 24 ] = KEY_KPPLUS, //fine tune +
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[ 25 ] = KEY_KPMINUS, //fine tune -
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// [ 42 ] = picture in picture
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[ 33 ] = KEY_KPDOT,
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[ 19 ] = KEY_KPENTER,
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// [ 17 ] = recall
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[ 34 ] = KEY_BACK,
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[ 35 ] = KEY_PLAYPAUSE,
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[ 36 ] = KEY_NEXT,
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// [ 37 ] = time shifting
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[ 38 ] = KEY_STOP,
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[ 39 ] = KEY_RECORD
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// [ 40 ] = snapshot
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};
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EXPORT_SYMBOL_GPL(ir_codes_winfast);
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/* empty keytable, can be used as placeholder for not-yet created keytables */
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IR_KEYTAB_TYPE ir_codes_empty[IR_KEYTAB_SIZE] = {
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[ 42 ] = KEY_COFFEE,
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};
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EXPORT_SYMBOL_GPL(ir_codes_empty);
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/* Hauppauge: the newer, gray remotes (seems there are multiple
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* slightly different versions), shipped with cx88+ivtv cards.
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* almost rc5 coding, but some non-standard keys */
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IR_KEYTAB_TYPE ir_codes_hauppauge_new[IR_KEYTAB_SIZE] = {
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[ 0x00 ] = KEY_KP0, // 0
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[ 0x01 ] = KEY_KP1, // 1
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[ 0x02 ] = KEY_KP2, // 2
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[ 0x03 ] = KEY_KP3, // 3
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[ 0x04 ] = KEY_KP4, // 4
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[ 0x05 ] = KEY_KP5, // 5
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[ 0x06 ] = KEY_KP6, // 6
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[ 0x07 ] = KEY_KP7, // 7
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[ 0x08 ] = KEY_KP8, // 8
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[ 0x09 ] = KEY_KP9, // 9
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[ 0x0b ] = KEY_RED, // red button
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[ 0x0c ] = KEY_OPTION, // black key without text
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[ 0x0d ] = KEY_MENU, // menu
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[ 0x0f ] = KEY_MUTE, // mute
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[ 0x10 ] = KEY_VOLUMEUP, // volume +
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[ 0x11 ] = KEY_VOLUMEDOWN, // volume -
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[ 0x1e ] = KEY_NEXT, // skip >|
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[ 0x1f ] = KEY_EXIT, // back/exit
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[ 0x20 ] = KEY_CHANNELUP, // channel / program +
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[ 0x21 ] = KEY_CHANNELDOWN, // channel / program -
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[ 0x22 ] = KEY_CHANNEL, // source (old black remote)
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[ 0x24 ] = KEY_PREVIOUS, // replay |<
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[ 0x25 ] = KEY_ENTER, // OK
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[ 0x26 ] = KEY_SLEEP, // minimize (old black remote)
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[ 0x29 ] = KEY_BLUE, // blue key
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[ 0x2e ] = KEY_GREEN, // green button
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[ 0x30 ] = KEY_PAUSE, // pause
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[ 0x32 ] = KEY_REWIND, // backward <<
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[ 0x34 ] = KEY_FASTFORWARD, // forward >>
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[ 0x35 ] = KEY_PLAY, // play
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[ 0x36 ] = KEY_STOP, // stop
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[ 0x37 ] = KEY_RECORD, // recording
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[ 0x38 ] = KEY_YELLOW, // yellow key
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[ 0x3b ] = KEY_SELECT, // top right button
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[ 0x3c ] = KEY_ZOOM, // full
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[ 0x3d ] = KEY_POWER, // system power (green button)
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};
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EXPORT_SYMBOL(ir_codes_hauppauge_new);
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/* -------------------------------------------------------------------------- */
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static void ir_input_key_event(struct input_dev *dev, struct ir_input_state *ir)
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{
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if (KEY_RESERVED == ir->keycode) {
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printk(KERN_INFO "%s: unknown key: key=0x%02x raw=0x%02x down=%d\n",
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dev->name,ir->ir_key,ir->ir_raw,ir->keypressed);
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return;
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}
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dprintk(1,"%s: key event code=%d down=%d\n",
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dev->name,ir->keycode,ir->keypressed);
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input_report_key(dev,ir->keycode,ir->keypressed);
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input_sync(dev);
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}
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/* -------------------------------------------------------------------------- */
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void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
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int ir_type, IR_KEYTAB_TYPE *ir_codes)
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{
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int i;
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ir->ir_type = ir_type;
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if (ir_codes)
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memcpy(ir->ir_codes, ir_codes, sizeof(ir->ir_codes));
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init_input_dev(dev);
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dev->keycode = ir->ir_codes;
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dev->keycodesize = sizeof(IR_KEYTAB_TYPE);
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dev->keycodemax = IR_KEYTAB_SIZE;
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for (i = 0; i < IR_KEYTAB_SIZE; i++)
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set_bit(ir->ir_codes[i], dev->keybit);
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clear_bit(0, dev->keybit);
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set_bit(EV_KEY, dev->evbit);
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if (repeat)
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set_bit(EV_REP, dev->evbit);
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}
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void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir)
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{
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if (ir->keypressed) {
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ir->keypressed = 0;
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ir_input_key_event(dev,ir);
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}
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}
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void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir,
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u32 ir_key, u32 ir_raw)
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{
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u32 keycode = IR_KEYCODE(ir->ir_codes, ir_key);
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if (ir->keypressed && ir->keycode != keycode) {
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ir->keypressed = 0;
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ir_input_key_event(dev,ir);
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}
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if (!ir->keypressed) {
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ir->ir_key = ir_key;
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ir->ir_raw = ir_raw;
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ir->keycode = keycode;
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ir->keypressed = 1;
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ir_input_key_event(dev,ir);
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}
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#if 0
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/* maybe do something like this ??? */
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input_event(a, EV_IR, ir->ir_type, ir->ir_raw);
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#endif
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}
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/* -------------------------------------------------------------------------- */
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u32 ir_extract_bits(u32 data, u32 mask)
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{
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int mbit, vbit;
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u32 value;
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value = 0;
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vbit = 0;
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for (mbit = 0; mbit < 32; mbit++) {
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if (!(mask & ((u32)1 << mbit)))
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continue;
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if (data & ((u32)1 << mbit))
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value |= (1 << vbit);
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vbit++;
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}
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return value;
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}
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static int inline getbit(u32 *samples, int bit)
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{
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return (samples[bit/32] & (1 << (31-(bit%32)))) ? 1 : 0;
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}
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/* sump raw samples for visual debugging ;) */
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int ir_dump_samples(u32 *samples, int count)
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{
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int i, bit, start;
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printk(KERN_DEBUG "ir samples: ");
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start = 0;
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for (i = 0; i < count * 32; i++) {
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bit = getbit(samples,i);
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if (bit)
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start = 1;
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if (0 == start)
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continue;
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printk("%s", bit ? "#" : "_");
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}
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printk("\n");
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return 0;
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}
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/* decode raw samples, biphase coding, used by rc5 for example */
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int ir_decode_biphase(u32 *samples, int count, int low, int high)
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{
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int i,last,bit,len,flips;
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u32 value;
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/* find start bit (1) */
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for (i = 0; i < 32; i++) {
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bit = getbit(samples,i);
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if (bit)
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break;
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}
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/* go decoding */
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len = 0;
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flips = 0;
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value = 1;
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for (; i < count * 32; i++) {
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if (len > high)
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break;
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if (flips > 1)
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break;
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last = bit;
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bit = getbit(samples,i);
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if (last == bit) {
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len++;
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continue;
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}
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if (len < low) {
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len++;
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flips++;
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continue;
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}
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value <<= 1;
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value |= bit;
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flips = 0;
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len = 1;
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}
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return value;
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}
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EXPORT_SYMBOL_GPL(ir_input_init);
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EXPORT_SYMBOL_GPL(ir_input_nokey);
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EXPORT_SYMBOL_GPL(ir_input_keydown);
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EXPORT_SYMBOL_GPL(ir_extract_bits);
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EXPORT_SYMBOL_GPL(ir_dump_samples);
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EXPORT_SYMBOL_GPL(ir_decode_biphase);
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/*
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* Local variables:
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* c-basic-offset: 8
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* End:
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*/
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