2 * $Id: ir-common.c,v 1.8 2005/02/22 12:28:40 kraxel Exp $
4 * some common structs and functions to handle infrared remotes via
7 * (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
26 #include <media/ir-common.h>
28 /* -------------------------------------------------------------------------- */
30 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
31 MODULE_LICENSE("GPL");
33 static int repeat = 1;
34 module_param(repeat, int, 0444);
35 MODULE_PARM_DESC(repeat,"auto-repeat for IR keys (default: on)");
37 static int debug = 0; /* debug level (0,1,2) */
38 module_param(debug, int, 0644);
40 #define dprintk(level, fmt, arg...) if (debug >= level) \
41 printk(KERN_DEBUG fmt , ## arg)
43 /* -------------------------------------------------------------------------- */
45 /* generic RC5 keytable */
46 /* see http://users.pandora.be/nenya/electronics/rc5/codes00.htm */
47 /* used by old (black) Hauppauge remotes */
48 IR_KEYTAB_TYPE ir_codes_rc5_tv[IR_KEYTAB_SIZE] = {
49 [ 0x00 ] = KEY_KP0, // 0
50 [ 0x01 ] = KEY_KP1, // 1
51 [ 0x02 ] = KEY_KP2, // 2
52 [ 0x03 ] = KEY_KP3, // 3
53 [ 0x04 ] = KEY_KP4, // 4
54 [ 0x05 ] = KEY_KP5, // 5
55 [ 0x06 ] = KEY_KP6, // 6
56 [ 0x07 ] = KEY_KP7, // 7
57 [ 0x08 ] = KEY_KP8, // 8
58 [ 0x09 ] = KEY_KP9, // 9
60 [ 0x0b ] = KEY_CHANNEL, // channel / program (japan: 11)
61 [ 0x0c ] = KEY_POWER, // standby
62 [ 0x0d ] = KEY_MUTE, // mute / demute
63 [ 0x0f ] = KEY_TV, // display
64 [ 0x10 ] = KEY_VOLUMEUP, // volume +
65 [ 0x11 ] = KEY_VOLUMEDOWN, // volume -
66 [ 0x12 ] = KEY_BRIGHTNESSUP, // brightness +
67 [ 0x13 ] = KEY_BRIGHTNESSDOWN, // brightness -
68 [ 0x1e ] = KEY_SEARCH, // search +
69 [ 0x20 ] = KEY_CHANNELUP, // channel / program +
70 [ 0x21 ] = KEY_CHANNELDOWN, // channel / program -
71 [ 0x22 ] = KEY_CHANNEL, // alt / channel
72 [ 0x23 ] = KEY_LANGUAGE, // 1st / 2nd language
73 [ 0x26 ] = KEY_SLEEP, // sleeptimer
74 [ 0x2e ] = KEY_MENU, // 2nd controls (USA: menu)
75 [ 0x30 ] = KEY_PAUSE, // pause
76 [ 0x32 ] = KEY_REWIND, // rewind
77 [ 0x33 ] = KEY_GOTO, // go to
78 [ 0x35 ] = KEY_PLAY, // play
79 [ 0x36 ] = KEY_STOP, // stop
80 [ 0x37 ] = KEY_RECORD, // recording
81 [ 0x3c ] = KEY_TEXT, // teletext submode (Japan: 12)
82 [ 0x3d ] = KEY_SUSPEND, // system standby
85 [ 0x0a ] = KEY_RESERVED, // 1/2/3 digits (japan: 10)
86 [ 0x0e ] = KEY_RESERVED, // P.P. (personal preference)
87 [ 0x14 ] = KEY_RESERVED, // colour saturation +
88 [ 0x15 ] = KEY_RESERVED, // colour saturation -
89 [ 0x16 ] = KEY_RESERVED, // bass +
90 [ 0x17 ] = KEY_RESERVED, // bass -
91 [ 0x18 ] = KEY_RESERVED, // treble +
92 [ 0x19 ] = KEY_RESERVED, // treble -
93 [ 0x1a ] = KEY_RESERVED, // balance right
94 [ 0x1b ] = KEY_RESERVED, // balance left
95 [ 0x1c ] = KEY_RESERVED, // contrast +
96 [ 0x1d ] = KEY_RESERVED, // contrast -
97 [ 0x1f ] = KEY_RESERVED, // tint/hue +
98 [ 0x24 ] = KEY_RESERVED, // spacial stereo on/off
99 [ 0x25 ] = KEY_RESERVED, // mono / stereo (USA)
100 [ 0x27 ] = KEY_RESERVED, // tint / hue -
101 [ 0x28 ] = KEY_RESERVED, // RF switch/PIP select
102 [ 0x29 ] = KEY_RESERVED, // vote
103 [ 0x2a ] = KEY_RESERVED, // timed page/channel clck
104 [ 0x2b ] = KEY_RESERVED, // increment (USA)
105 [ 0x2c ] = KEY_RESERVED, // decrement (USA)
106 [ 0x2d ] = KEY_RESERVED, //
107 [ 0x2f ] = KEY_RESERVED, // PIP shift
108 [ 0x31 ] = KEY_RESERVED, // erase
109 [ 0x34 ] = KEY_RESERVED, // wind
110 [ 0x38 ] = KEY_RESERVED, // external 1
111 [ 0x39 ] = KEY_RESERVED, // external 2
112 [ 0x3a ] = KEY_RESERVED, // PIP display mode
113 [ 0x3b ] = KEY_RESERVED, // view data mode / advance
114 [ 0x3e ] = KEY_RESERVED, // crispener on/off
115 [ 0x3f ] = KEY_RESERVED, // system select
118 EXPORT_SYMBOL_GPL(ir_codes_rc5_tv);
120 /* Table for Leadtek Winfast Remote Controls - used by both bttv and cx88 */
121 IR_KEYTAB_TYPE ir_codes_winfast[IR_KEYTAB_SIZE] = {
134 [ 27 ] = KEY_LANGUAGE, //MTS button
135 [ 2 ] = KEY_TUNER, // TV/FM
137 [ 22 ] = KEY_INFO, //display button
138 [ 4 ] = KEY_VOLUMEUP,
139 [ 8 ] = KEY_VOLUMEDOWN,
140 [ 12 ] = KEY_CHANNELUP,
141 [ 16 ] = KEY_CHANNELDOWN,
142 [ 3 ] = KEY_ZOOM, // fullscreen
143 [ 31 ] = KEY_SUBTITLE, // closed caption/teletext
145 [ 41 ] = KEY_SEARCH, //boss key
151 [ 24 ] = KEY_KPPLUS, //fine tune +
152 [ 25 ] = KEY_KPMINUS, //fine tune -
153 [ 42 ] = KEY_ANGLE, //picture in picture
155 [ 19 ] = KEY_KPENTER,
156 [ 17 ] = KEY_AGAIN, //recall
158 [ 35 ] = KEY_PLAYPAUSE,
160 [ 37 ] = KEY_T, //time shifting
163 [ 40 ] = KEY_SHUFFLE //snapshot
165 EXPORT_SYMBOL_GPL(ir_codes_winfast);
167 /* empty keytable, can be used as placeholder for not-yet created keytables */
168 IR_KEYTAB_TYPE ir_codes_empty[IR_KEYTAB_SIZE] = {
171 EXPORT_SYMBOL_GPL(ir_codes_empty);
173 /* Hauppauge: the newer, gray remotes (seems there are multiple
174 * slightly different versions), shipped with cx88+ivtv cards.
175 * almost rc5 coding, but some non-standard keys */
176 IR_KEYTAB_TYPE ir_codes_hauppauge_new[IR_KEYTAB_SIZE] = {
177 [ 0x00 ] = KEY_KP0, // 0
178 [ 0x01 ] = KEY_KP1, // 1
179 [ 0x02 ] = KEY_KP2, // 2
180 [ 0x03 ] = KEY_KP3, // 3
181 [ 0x04 ] = KEY_KP4, // 4
182 [ 0x05 ] = KEY_KP5, // 5
183 [ 0x06 ] = KEY_KP6, // 6
184 [ 0x07 ] = KEY_KP7, // 7
185 [ 0x08 ] = KEY_KP8, // 8
186 [ 0x09 ] = KEY_KP9, // 9
187 [ 0x0b ] = KEY_RED, // red button
188 [ 0x0c ] = KEY_OPTION, // black key without text
189 [ 0x0d ] = KEY_MENU, // menu
190 [ 0x0f ] = KEY_MUTE, // mute
191 [ 0x10 ] = KEY_VOLUMEUP, // volume +
192 [ 0x11 ] = KEY_VOLUMEDOWN, // volume -
193 [ 0x1e ] = KEY_NEXT, // skip >|
194 [ 0x1f ] = KEY_EXIT, // back/exit
195 [ 0x20 ] = KEY_CHANNELUP, // channel / program +
196 [ 0x21 ] = KEY_CHANNELDOWN, // channel / program -
197 [ 0x22 ] = KEY_CHANNEL, // source (old black remote)
198 [ 0x24 ] = KEY_PREVIOUS, // replay |<
199 [ 0x25 ] = KEY_ENTER, // OK
200 [ 0x26 ] = KEY_SLEEP, // minimize (old black remote)
201 [ 0x29 ] = KEY_BLUE, // blue key
202 [ 0x2e ] = KEY_GREEN, // green button
203 [ 0x30 ] = KEY_PAUSE, // pause
204 [ 0x32 ] = KEY_REWIND, // backward <<
205 [ 0x34 ] = KEY_FASTFORWARD, // forward >>
206 [ 0x35 ] = KEY_PLAY, // play
207 [ 0x36 ] = KEY_STOP, // stop
208 [ 0x37 ] = KEY_RECORD, // recording
209 [ 0x38 ] = KEY_YELLOW, // yellow key
210 [ 0x3b ] = KEY_SELECT, // top right button
211 [ 0x3c ] = KEY_ZOOM, // full
212 [ 0x3d ] = KEY_POWER, // system power (green button)
214 EXPORT_SYMBOL(ir_codes_hauppauge_new);
216 /* -------------------------------------------------------------------------- */
218 static void ir_input_key_event(struct input_dev *dev, struct ir_input_state *ir)
220 if (KEY_RESERVED == ir->keycode) {
221 printk(KERN_INFO "%s: unknown key: key=0x%02x raw=0x%02x down=%d\n",
222 dev->name,ir->ir_key,ir->ir_raw,ir->keypressed);
225 dprintk(1,"%s: key event code=%d down=%d\n",
226 dev->name,ir->keycode,ir->keypressed);
227 input_report_key(dev,ir->keycode,ir->keypressed);
231 /* -------------------------------------------------------------------------- */
233 void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
234 int ir_type, IR_KEYTAB_TYPE *ir_codes)
238 ir->ir_type = ir_type;
240 memcpy(ir->ir_codes, ir_codes, sizeof(ir->ir_codes));
243 dev->keycode = ir->ir_codes;
244 dev->keycodesize = sizeof(IR_KEYTAB_TYPE);
245 dev->keycodemax = IR_KEYTAB_SIZE;
246 for (i = 0; i < IR_KEYTAB_SIZE; i++)
247 set_bit(ir->ir_codes[i], dev->keybit);
248 clear_bit(0, dev->keybit);
250 set_bit(EV_KEY, dev->evbit);
252 set_bit(EV_REP, dev->evbit);
255 void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir)
257 if (ir->keypressed) {
259 ir_input_key_event(dev,ir);
263 void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir,
264 u32 ir_key, u32 ir_raw)
266 u32 keycode = IR_KEYCODE(ir->ir_codes, ir_key);
268 if (ir->keypressed && ir->keycode != keycode) {
270 ir_input_key_event(dev,ir);
272 if (!ir->keypressed) {
275 ir->keycode = keycode;
277 ir_input_key_event(dev,ir);
280 /* maybe do something like this ??? */
281 input_event(a, EV_IR, ir->ir_type, ir->ir_raw);
285 /* -------------------------------------------------------------------------- */
287 u32 ir_extract_bits(u32 data, u32 mask)
294 for (mbit = 0; mbit < 32; mbit++) {
295 if (!(mask & ((u32)1 << mbit)))
297 if (data & ((u32)1 << mbit))
298 value |= (1 << vbit);
304 static int inline getbit(u32 *samples, int bit)
306 return (samples[bit/32] & (1 << (31-(bit%32)))) ? 1 : 0;
309 /* sump raw samples for visual debugging ;) */
310 int ir_dump_samples(u32 *samples, int count)
314 printk(KERN_DEBUG "ir samples: ");
316 for (i = 0; i < count * 32; i++) {
317 bit = getbit(samples,i);
322 printk("%s", bit ? "#" : "_");
328 /* decode raw samples, biphase coding, used by rc5 for example */
329 int ir_decode_biphase(u32 *samples, int count, int low, int high)
331 int i,last,bit,len,flips;
334 /* find start bit (1) */
335 for (i = 0; i < 32; i++) {
336 bit = getbit(samples,i);
345 for (; i < count * 32; i++) {
351 bit = getbit(samples,i);
369 EXPORT_SYMBOL_GPL(ir_input_init);
370 EXPORT_SYMBOL_GPL(ir_input_nokey);
371 EXPORT_SYMBOL_GPL(ir_input_keydown);
373 EXPORT_SYMBOL_GPL(ir_extract_bits);
374 EXPORT_SYMBOL_GPL(ir_dump_samples);
375 EXPORT_SYMBOL_GPL(ir_decode_biphase);