/* * $Id: ir-common.c,v 1.8 2005/02/22 12:28:40 kraxel Exp $ * * some common structs and functions to handle infrared remotes via * input layer ... * * (c) 2003 Gerd Knorr [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 #include #include /* -------------------------------------------------------------------------- */ MODULE_AUTHOR("Gerd Knorr [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, // [ 27 ] = MTS button [ 2 ] = KEY_TUNER, // TV/FM [ 30 ] = KEY_VIDEO, // [ 22 ] = display button [ 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, // [ 41 ] = boss key [ 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 - // [ 42 ] = picture in picture [ 33 ] = KEY_KPDOT, [ 19 ] = KEY_KPENTER, // [ 17 ] = recall [ 34 ] = KEY_BACK, [ 35 ] = KEY_PLAYPAUSE, [ 36 ] = KEY_NEXT, // [ 37 ] = time shifting [ 38 ] = KEY_STOP, [ 39 ] = KEY_RECORD // [ 40 ] = snapshot }; 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 [ 0x0b ] = KEY_RED, // red button [ 0x0c ] = KEY_OPTION, // black key without text [ 0x0d ] = KEY_MENU, // menu [ 0x0f ] = KEY_MUTE, // mute [ 0x10 ] = KEY_VOLUMEUP, // volume + [ 0x11 ] = KEY_VOLUMEDOWN, // volume - [ 0x1e ] = KEY_NEXT, // skip >| [ 0x1f ] = KEY_EXIT, // back/exit [ 0x20 ] = KEY_CHANNELUP, // channel / program + [ 0x21 ] = KEY_CHANNELDOWN, // channel / program - [ 0x22 ] = KEY_CHANNEL, // source (old black remote) [ 0x24 ] = KEY_PREVIOUS, // replay |< [ 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); /* -------------------------------------------------------------------------- */ 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: */