Merge branch 'topic/misc' into topic/pcsp-fix
[linux-2.6] / drivers / media / video / saa7134 / saa7134-input.c
1 /*
2  *
3  * handle saa7134 IR remotes via linux kernel input layer.
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  *
19  */
20
21 #include <linux/module.h>
22 #include <linux/init.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/input.h>
26
27 #include "saa7134-reg.h"
28 #include "saa7134.h"
29
30 static unsigned int disable_ir;
31 module_param(disable_ir, int, 0444);
32 MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
33
34 static unsigned int ir_debug;
35 module_param(ir_debug, int, 0644);
36 MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
37
38 static int pinnacle_remote;
39 module_param(pinnacle_remote, int, 0644);    /* Choose Pinnacle PCTV remote */
40 MODULE_PARM_DESC(pinnacle_remote, "Specify Pinnacle PCTV remote: 0=coloured, 1=grey (defaults to 0)");
41
42 static int ir_rc5_remote_gap = 885;
43 module_param(ir_rc5_remote_gap, int, 0644);
44 static int ir_rc5_key_timeout = 115;
45 module_param(ir_rc5_key_timeout, int, 0644);
46
47 static int repeat_delay = 500;
48 module_param(repeat_delay, int, 0644);
49 MODULE_PARM_DESC(repeat_delay, "delay before key repeat started");
50 static int repeat_period = 33;
51 module_param(repeat_period, int, 0644);
52 MODULE_PARM_DESC(repeat_period, "repeat period between "
53     "keypresses when key is down");
54
55 static unsigned int disable_other_ir;
56 module_param(disable_other_ir, int, 0644);
57 MODULE_PARM_DESC(disable_other_ir, "disable full codes of "
58     "alternative remotes from other manufacturers");
59
60 #define dprintk(fmt, arg...)    if (ir_debug) \
61         printk(KERN_DEBUG "%s/ir: " fmt, dev->name , ## arg)
62 #define i2cdprintk(fmt, arg...)    if (ir_debug) \
63         printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
64
65 /* Helper functions for RC5 and NEC decoding at GPIO16 or GPIO18 */
66 static int saa7134_rc5_irq(struct saa7134_dev *dev);
67 static int saa7134_nec_irq(struct saa7134_dev *dev);
68 static void nec_task(unsigned long data);
69 static void saa7134_nec_timer(unsigned long data);
70
71 /* -------------------- GPIO generic keycode builder -------------------- */
72
73 static int build_key(struct saa7134_dev *dev)
74 {
75         struct card_ir *ir = dev->remote;
76         u32 gpio, data;
77
78         /* here comes the additional handshake steps for some cards */
79         switch (dev->board) {
80         case SAA7134_BOARD_GOTVIEW_7135:
81                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x80);
82                 saa_clearb(SAA7134_GPIO_GPSTATUS1, 0x80);
83                 break;
84         }
85         /* rising SAA7134_GPIO_GPRESCAN reads the status */
86         saa_clearb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
87         saa_setb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
88
89         gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
90         if (ir->polling) {
91                 if (ir->last_gpio == gpio)
92                         return 0;
93                 ir->last_gpio = gpio;
94         }
95
96         data = ir_extract_bits(gpio, ir->mask_keycode);
97         dprintk("build_key gpio=0x%x mask=0x%x data=%d\n",
98                 gpio, ir->mask_keycode, data);
99
100         if (ir->polling) {
101                 if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
102                     (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
103                         ir_input_keydown(ir->dev, &ir->ir, data, data);
104                 } else {
105                         ir_input_nokey(ir->dev, &ir->ir);
106                 }
107         }
108         else {  /* IRQ driven mode - handle key press and release in one go */
109                 if ((ir->mask_keydown  &&  (0 != (gpio & ir->mask_keydown))) ||
110                     (ir->mask_keyup    &&  (0 == (gpio & ir->mask_keyup)))) {
111                         ir_input_keydown(ir->dev, &ir->ir, data, data);
112                         ir_input_nokey(ir->dev, &ir->ir);
113                 }
114         }
115
116         return 0;
117 }
118
119 /* --------------------- Chip specific I2C key builders ----------------- */
120
121 static int get_key_msi_tvanywhere_plus(struct IR_i2c *ir, u32 *ir_key,
122                                        u32 *ir_raw)
123 {
124         unsigned char b;
125         int gpio;
126
127         /* <dev> is needed to access GPIO. Used by the saa_readl macro. */
128         struct saa7134_dev *dev = ir->c.adapter->algo_data;
129         if (dev == NULL) {
130                 dprintk("get_key_msi_tvanywhere_plus: "
131                         "gir->c.adapter->algo_data is NULL!\n");
132                 return -EIO;
133         }
134
135         /* rising SAA7134_GPIO_GPRESCAN reads the status */
136
137         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
138         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
139
140         gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
141
142         /* GPIO&0x40 is pulsed low when a button is pressed. Don't do
143            I2C receive if gpio&0x40 is not low. */
144
145         if (gpio & 0x40)
146                 return 0;       /* No button press */
147
148         /* GPIO says there is a button press. Get it. */
149
150         if (1 != i2c_master_recv(&ir->c, &b, 1)) {
151                 i2cdprintk("read error\n");
152                 return -EIO;
153         }
154
155         /* No button press */
156
157         if (b == 0xff)
158                 return 0;
159
160         /* Button pressed */
161
162         dprintk("get_key_msi_tvanywhere_plus: Key = 0x%02X\n", b);
163         *ir_key = b;
164         *ir_raw = b;
165         return 1;
166 }
167
168 static int get_key_purpletv(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
169 {
170         unsigned char b;
171
172         /* poll IR chip */
173         if (1 != i2c_master_recv(&ir->c,&b,1)) {
174                 i2cdprintk("read error\n");
175                 return -EIO;
176         }
177
178         /* no button press */
179         if (b==0)
180                 return 0;
181
182         /* repeating */
183         if (b & 0x80)
184                 return 1;
185
186         *ir_key = b;
187         *ir_raw = b;
188         return 1;
189 }
190
191 static int get_key_hvr1110(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
192 {
193         unsigned char buf[5], cod4, code3, code4;
194
195         /* poll IR chip */
196         if (5 != i2c_master_recv(&ir->c,buf,5))
197                 return -EIO;
198
199         cod4    = buf[4];
200         code4   = (cod4 >> 2);
201         code3   = buf[3];
202         if (code3 == 0)
203                 /* no key pressed */
204                 return 0;
205
206         /* return key */
207         *ir_key = code4;
208         *ir_raw = code4;
209         return 1;
210 }
211
212
213 static int get_key_beholdm6xx(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
214 {
215         unsigned char data[12];
216         u32 gpio;
217
218         struct saa7134_dev *dev = ir->c.adapter->algo_data;
219
220         /* rising SAA7134_GPIO_GPRESCAN reads the status */
221         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
222         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
223
224         gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
225
226         if (0x400000 & ~gpio)
227                 return 0; /* No button press */
228
229         ir->c.addr = 0x5a >> 1;
230
231         if (12 != i2c_master_recv(&ir->c, data, 12)) {
232                 i2cdprintk("read error\n");
233                 return -EIO;
234         }
235         /* IR of this card normally decode signals NEC-standard from
236          * - Sven IHOO MT 5.1R remote. xxyye718
237          * - Sven DVD HD-10xx remote. xxyyf708
238          * - BBK ...
239          * - mayby others
240          * So, skip not our, if disable full codes mode.
241          */
242         if (data[10] != 0x6b && data[11] != 0x86 && disable_other_ir)
243                 return 0;
244
245         *ir_key = data[9];
246         *ir_raw = data[9];
247
248         return 1;
249 }
250
251 /* Common (grey or coloured) pinnacle PCTV remote handling
252  *
253  */
254 static int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw,
255                             int parity_offset, int marker, int code_modulo)
256 {
257         unsigned char b[4];
258         unsigned int start = 0,parity = 0,code = 0;
259
260         /* poll IR chip */
261         if (4 != i2c_master_recv(&ir->c, b, 4)) {
262                 i2cdprintk("read error\n");
263                 return -EIO;
264         }
265
266         for (start = 0; start < ARRAY_SIZE(b); start++) {
267                 if (b[start] == marker) {
268                         code=b[(start+parity_offset + 1) % 4];
269                         parity=b[(start+parity_offset) % 4];
270                 }
271         }
272
273         /* Empty Request */
274         if (parity == 0)
275                 return 0;
276
277         /* Repeating... */
278         if (ir->old == parity)
279                 return 0;
280
281         ir->old = parity;
282
283         /* drop special codes when a key is held down a long time for the grey controller
284            In this case, the second bit of the code is asserted */
285         if (marker == 0xfe && (code & 0x40))
286                 return 0;
287
288         code %= code_modulo;
289
290         *ir_raw = code;
291         *ir_key = code;
292
293         i2cdprintk("Pinnacle PCTV key %02x\n", code);
294
295         return 1;
296 }
297
298 /* The grey pinnacle PCTV remote
299  *
300  *  There are one issue with this remote:
301  *   - I2c packet does not change when the same key is pressed quickly. The workaround
302  *     is to hold down each key for about half a second, so that another code is generated
303  *     in the i2c packet, and the function can distinguish key presses.
304  *
305  * Sylvain Pasche <sylvain.pasche@gmail.com>
306  */
307 static int get_key_pinnacle_grey(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
308 {
309
310         return get_key_pinnacle(ir, ir_key, ir_raw, 1, 0xfe, 0xff);
311 }
312
313
314 /* The new pinnacle PCTV remote (with the colored buttons)
315  *
316  * Ricardo Cerqueira <v4l@cerqueira.org>
317  */
318 static int get_key_pinnacle_color(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
319 {
320         /* code_modulo parameter (0x88) is used to reduce code value to fit inside IR_KEYTAB_SIZE
321          *
322          * this is the only value that results in 42 unique
323          * codes < 128
324          */
325
326         return get_key_pinnacle(ir, ir_key, ir_raw, 2, 0x80, 0x88);
327 }
328
329 void saa7134_input_irq(struct saa7134_dev *dev)
330 {
331         struct card_ir *ir = dev->remote;
332
333         if (ir->nec_gpio) {
334                 saa7134_nec_irq(dev);
335         } else if (!ir->polling && !ir->rc5_gpio) {
336                 build_key(dev);
337         } else if (ir->rc5_gpio) {
338                 saa7134_rc5_irq(dev);
339         }
340 }
341
342 static void saa7134_input_timer(unsigned long data)
343 {
344         struct saa7134_dev *dev = (struct saa7134_dev *)data;
345         struct card_ir *ir = dev->remote;
346
347         build_key(dev);
348         mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
349 }
350
351 void saa7134_ir_start(struct saa7134_dev *dev, struct card_ir *ir)
352 {
353         if (ir->polling) {
354                 setup_timer(&ir->timer, saa7134_input_timer,
355                             (unsigned long)dev);
356                 ir->timer.expires  = jiffies + HZ;
357                 add_timer(&ir->timer);
358         } else if (ir->rc5_gpio) {
359                 /* set timer_end for code completion */
360                 init_timer(&ir->timer_end);
361                 ir->timer_end.function = ir_rc5_timer_end;
362                 ir->timer_end.data = (unsigned long)ir;
363                 init_timer(&ir->timer_keyup);
364                 ir->timer_keyup.function = ir_rc5_timer_keyup;
365                 ir->timer_keyup.data = (unsigned long)ir;
366                 ir->shift_by = 2;
367                 ir->start = 0x2;
368                 ir->addr = 0x17;
369                 ir->rc5_key_timeout = ir_rc5_key_timeout;
370                 ir->rc5_remote_gap = ir_rc5_remote_gap;
371         } else if (ir->nec_gpio) {
372                 setup_timer(&ir->timer_keyup, saa7134_nec_timer,
373                             (unsigned long)dev);
374                 tasklet_init(&ir->tlet, nec_task, (unsigned long)dev);
375         }
376 }
377
378 void saa7134_ir_stop(struct saa7134_dev *dev)
379 {
380         if (dev->remote->polling)
381                 del_timer_sync(&dev->remote->timer);
382 }
383
384 int saa7134_input_init1(struct saa7134_dev *dev)
385 {
386         struct card_ir *ir;
387         struct input_dev *input_dev;
388         IR_KEYTAB_TYPE *ir_codes = NULL;
389         u32 mask_keycode = 0;
390         u32 mask_keydown = 0;
391         u32 mask_keyup   = 0;
392         int polling      = 0;
393         int rc5_gpio     = 0;
394         int nec_gpio     = 0;
395         int ir_type      = IR_TYPE_OTHER;
396         int err;
397
398         if (dev->has_remote != SAA7134_REMOTE_GPIO)
399                 return -ENODEV;
400         if (disable_ir)
401                 return -ENODEV;
402
403         /* detect & configure */
404         switch (dev->board) {
405         case SAA7134_BOARD_FLYVIDEO2000:
406         case SAA7134_BOARD_FLYVIDEO3000:
407         case SAA7134_BOARD_FLYTVPLATINUM_FM:
408         case SAA7134_BOARD_FLYTVPLATINUM_MINI2:
409                 ir_codes     = ir_codes_flyvideo;
410                 mask_keycode = 0xEC00000;
411                 mask_keydown = 0x0040000;
412                 break;
413         case SAA7134_BOARD_CINERGY400:
414         case SAA7134_BOARD_CINERGY600:
415         case SAA7134_BOARD_CINERGY600_MK3:
416                 ir_codes     = ir_codes_cinergy;
417                 mask_keycode = 0x00003f;
418                 mask_keyup   = 0x040000;
419                 break;
420         case SAA7134_BOARD_ECS_TVP3XP:
421         case SAA7134_BOARD_ECS_TVP3XP_4CB5:
422                 ir_codes     = ir_codes_eztv;
423                 mask_keycode = 0x00017c;
424                 mask_keyup   = 0x000002;
425                 polling      = 50; // ms
426                 break;
427         case SAA7134_BOARD_KWORLD_XPERT:
428         case SAA7134_BOARD_AVACSSMARTTV:
429                 ir_codes     = ir_codes_pixelview;
430                 mask_keycode = 0x00001F;
431                 mask_keyup   = 0x000020;
432                 polling      = 50; // ms
433                 break;
434         case SAA7134_BOARD_MD2819:
435         case SAA7134_BOARD_KWORLD_VSTREAM_XPERT:
436         case SAA7134_BOARD_AVERMEDIA_305:
437         case SAA7134_BOARD_AVERMEDIA_307:
438         case SAA7134_BOARD_AVERMEDIA_STUDIO_305:
439         case SAA7134_BOARD_AVERMEDIA_STUDIO_307:
440         case SAA7134_BOARD_AVERMEDIA_STUDIO_507:
441         case SAA7134_BOARD_AVERMEDIA_GO_007_FM:
442         case SAA7134_BOARD_AVERMEDIA_M102:
443                 ir_codes     = ir_codes_avermedia;
444                 mask_keycode = 0x0007C8;
445                 mask_keydown = 0x000010;
446                 polling      = 50; // ms
447                 /* Set GPIO pin2 to high to enable the IR controller */
448                 saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
449                 saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
450                 break;
451         case SAA7134_BOARD_AVERMEDIA_M135A:
452                 ir_codes     = ir_codes_avermedia_m135a;
453                 mask_keydown = 0x0040000;
454                 mask_keycode = 0x00013f;
455                 nec_gpio     = 1;
456                 break;
457         case SAA7134_BOARD_AVERMEDIA_777:
458         case SAA7134_BOARD_AVERMEDIA_A16AR:
459                 ir_codes     = ir_codes_avermedia;
460                 mask_keycode = 0x02F200;
461                 mask_keydown = 0x000400;
462                 polling      = 50; // ms
463                 /* Without this we won't receive key up events */
464                 saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
465                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
466                 break;
467         case SAA7134_BOARD_AVERMEDIA_A16D:
468                 ir_codes     = ir_codes_avermedia_a16d;
469                 mask_keycode = 0x02F200;
470                 mask_keydown = 0x000400;
471                 polling      = 50; /* ms */
472                 /* Without this we won't receive key up events */
473                 saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
474                 saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
475                 break;
476         case SAA7134_BOARD_KWORLD_TERMINATOR:
477                 ir_codes     = ir_codes_pixelview;
478                 mask_keycode = 0x00001f;
479                 mask_keyup   = 0x000060;
480                 polling      = 50; // ms
481                 break;
482         case SAA7134_BOARD_MANLI_MTV001:
483         case SAA7134_BOARD_MANLI_MTV002:
484                 ir_codes     = ir_codes_manli;
485                 mask_keycode = 0x001f00;
486                 mask_keyup   = 0x004000;
487                 polling      = 50; /* ms */
488                 break;
489         case SAA7134_BOARD_BEHOLD_409FM:
490         case SAA7134_BOARD_BEHOLD_401:
491         case SAA7134_BOARD_BEHOLD_403:
492         case SAA7134_BOARD_BEHOLD_403FM:
493         case SAA7134_BOARD_BEHOLD_405:
494         case SAA7134_BOARD_BEHOLD_405FM:
495         case SAA7134_BOARD_BEHOLD_407:
496         case SAA7134_BOARD_BEHOLD_407FM:
497         case SAA7134_BOARD_BEHOLD_409:
498         case SAA7134_BOARD_BEHOLD_505FM:
499         case SAA7134_BOARD_BEHOLD_507_9FM:
500                 ir_codes     = ir_codes_manli;
501                 mask_keycode = 0x003f00;
502                 mask_keyup   = 0x004000;
503                 polling      = 50; /* ms */
504                 break;
505         case SAA7134_BOARD_BEHOLD_COLUMBUS_TVFM:
506                 ir_codes     = ir_codes_behold_columbus;
507                 mask_keycode = 0x003f00;
508                 mask_keyup   = 0x004000;
509                 polling      = 50; // ms
510                 break;
511         case SAA7134_BOARD_SEDNA_PC_TV_CARDBUS:
512                 ir_codes     = ir_codes_pctv_sedna;
513                 mask_keycode = 0x001f00;
514                 mask_keyup   = 0x004000;
515                 polling      = 50; // ms
516                 break;
517         case SAA7134_BOARD_GOTVIEW_7135:
518                 ir_codes     = ir_codes_gotview7135;
519                 mask_keycode = 0x0003CC;
520                 mask_keydown = 0x000010;
521                 polling      = 5; /* ms */
522                 saa_setb(SAA7134_GPIO_GPMODE1, 0x80);
523                 break;
524         case SAA7134_BOARD_VIDEOMATE_TV_PVR:
525         case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS:
526         case SAA7134_BOARD_VIDEOMATE_TV_GOLD_PLUSII:
527                 ir_codes     = ir_codes_videomate_tv_pvr;
528                 mask_keycode = 0x00003F;
529                 mask_keyup   = 0x400000;
530                 polling      = 50; // ms
531                 break;
532         case SAA7134_BOARD_PROTEUS_2309:
533                 ir_codes     = ir_codes_proteus_2309;
534                 mask_keycode = 0x00007F;
535                 mask_keyup   = 0x000080;
536                 polling      = 50; // ms
537                 break;
538         case SAA7134_BOARD_VIDEOMATE_DVBT_300:
539         case SAA7134_BOARD_VIDEOMATE_DVBT_200:
540                 ir_codes     = ir_codes_videomate_tv_pvr;
541                 mask_keycode = 0x003F00;
542                 mask_keyup   = 0x040000;
543                 break;
544         case SAA7134_BOARD_FLYDVBS_LR300:
545         case SAA7134_BOARD_FLYDVBT_LR301:
546         case SAA7134_BOARD_FLYDVBTDUO:
547                 ir_codes     = ir_codes_flydvb;
548                 mask_keycode = 0x0001F00;
549                 mask_keydown = 0x0040000;
550                 break;
551         case SAA7134_BOARD_ASUSTeK_P7131_DUAL:
552         case SAA7134_BOARD_ASUSTeK_P7131_HYBRID_LNA:
553        case SAA7134_BOARD_ASUSTeK_P7131_ANALOG:
554                 ir_codes     = ir_codes_asus_pc39;
555                 mask_keydown = 0x0040000;
556                 rc5_gpio = 1;
557                 break;
558         case SAA7134_BOARD_ENCORE_ENLTV:
559         case SAA7134_BOARD_ENCORE_ENLTV_FM:
560                 ir_codes     = ir_codes_encore_enltv;
561                 mask_keycode = 0x00007f;
562                 mask_keyup   = 0x040000;
563                 polling      = 50; // ms
564                 break;
565         case SAA7134_BOARD_ENCORE_ENLTV_FM53:
566                 ir_codes     = ir_codes_encore_enltv_fm53;
567                 mask_keydown = 0x0040000;
568                 mask_keycode = 0x00007f;
569                 nec_gpio = 1;
570                 break;
571         case SAA7134_BOARD_10MOONSTVMASTER3:
572                 ir_codes     = ir_codes_encore_enltv;
573                 mask_keycode = 0x5f80000;
574                 mask_keyup   = 0x8000000;
575                 polling      = 50; //ms
576                 break;
577         case SAA7134_BOARD_GENIUS_TVGO_A11MCE:
578                 ir_codes     = ir_codes_genius_tvgo_a11mce;
579                 mask_keycode = 0xff;
580                 mask_keydown = 0xf00000;
581                 polling = 50; /* ms */
582                 break;
583         case SAA7134_BOARD_REAL_ANGEL_220:
584                 ir_codes     = ir_codes_real_audio_220_32_keys;
585                 mask_keycode = 0x3f00;
586                 mask_keyup   = 0x4000;
587                 polling = 50; /* ms */
588                 break;
589         }
590         if (NULL == ir_codes) {
591                 printk("%s: Oops: IR config error [card=%d]\n",
592                        dev->name, dev->board);
593                 return -ENODEV;
594         }
595
596         ir = kzalloc(sizeof(*ir), GFP_KERNEL);
597         input_dev = input_allocate_device();
598         if (!ir || !input_dev) {
599                 err = -ENOMEM;
600                 goto err_out_free;
601         }
602
603         ir->dev = input_dev;
604
605         /* init hardware-specific stuff */
606         ir->mask_keycode = mask_keycode;
607         ir->mask_keydown = mask_keydown;
608         ir->mask_keyup   = mask_keyup;
609         ir->polling      = polling;
610         ir->rc5_gpio     = rc5_gpio;
611         ir->nec_gpio     = nec_gpio;
612
613         /* init input device */
614         snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
615                  saa7134_boards[dev->board].name);
616         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
617                  pci_name(dev->pci));
618
619         ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
620         input_dev->name = ir->name;
621         input_dev->phys = ir->phys;
622         input_dev->id.bustype = BUS_PCI;
623         input_dev->id.version = 1;
624         if (dev->pci->subsystem_vendor) {
625                 input_dev->id.vendor  = dev->pci->subsystem_vendor;
626                 input_dev->id.product = dev->pci->subsystem_device;
627         } else {
628                 input_dev->id.vendor  = dev->pci->vendor;
629                 input_dev->id.product = dev->pci->device;
630         }
631         input_dev->dev.parent = &dev->pci->dev;
632
633         dev->remote = ir;
634         saa7134_ir_start(dev, ir);
635
636         err = input_register_device(ir->dev);
637         if (err)
638                 goto err_out_stop;
639
640         /* the remote isn't as bouncy as a keyboard */
641         ir->dev->rep[REP_DELAY] = repeat_delay;
642         ir->dev->rep[REP_PERIOD] = repeat_period;
643
644         return 0;
645
646  err_out_stop:
647         saa7134_ir_stop(dev);
648         dev->remote = NULL;
649  err_out_free:
650         input_free_device(input_dev);
651         kfree(ir);
652         return err;
653 }
654
655 void saa7134_input_fini(struct saa7134_dev *dev)
656 {
657         if (NULL == dev->remote)
658                 return;
659
660         saa7134_ir_stop(dev);
661         input_unregister_device(dev->remote->dev);
662         kfree(dev->remote);
663         dev->remote = NULL;
664 }
665
666 void saa7134_set_i2c_ir(struct saa7134_dev *dev, struct IR_i2c *ir)
667 {
668         if (disable_ir) {
669                 dprintk("Found supported i2c remote, but IR has been disabled\n");
670                 ir->get_key=NULL;
671                 return;
672         }
673
674         switch (dev->board) {
675         case SAA7134_BOARD_PINNACLE_PCTV_110i:
676         case SAA7134_BOARD_PINNACLE_PCTV_310i:
677                 snprintf(ir->c.name, sizeof(ir->c.name), "Pinnacle PCTV");
678                 if (pinnacle_remote == 0) {
679                         ir->get_key   = get_key_pinnacle_color;
680                         ir->ir_codes = ir_codes_pinnacle_color;
681                 } else {
682                         ir->get_key   = get_key_pinnacle_grey;
683                         ir->ir_codes = ir_codes_pinnacle_grey;
684                 }
685                 break;
686         case SAA7134_BOARD_UPMOST_PURPLE_TV:
687                 snprintf(ir->c.name, sizeof(ir->c.name), "Purple TV");
688                 ir->get_key   = get_key_purpletv;
689                 ir->ir_codes  = ir_codes_purpletv;
690                 break;
691         case SAA7134_BOARD_MSI_TVATANYWHERE_PLUS:
692                 snprintf(ir->c.name, sizeof(ir->c.name), "MSI TV@nywhere Plus");
693                 ir->get_key  = get_key_msi_tvanywhere_plus;
694                 ir->ir_codes = ir_codes_msi_tvanywhere_plus;
695                 break;
696         case SAA7134_BOARD_HAUPPAUGE_HVR1110:
697                 snprintf(ir->c.name, sizeof(ir->c.name), "HVR 1110");
698                 ir->get_key   = get_key_hvr1110;
699                 ir->ir_codes  = ir_codes_hauppauge_new;
700                 break;
701         case SAA7134_BOARD_BEHOLD_607_9FM:
702         case SAA7134_BOARD_BEHOLD_M6:
703         case SAA7134_BOARD_BEHOLD_M63:
704         case SAA7134_BOARD_BEHOLD_M6_EXTRA:
705         case SAA7134_BOARD_BEHOLD_H6:
706                 snprintf(ir->c.name, sizeof(ir->c.name), "BeholdTV");
707                 ir->get_key   = get_key_beholdm6xx;
708                 ir->ir_codes  = ir_codes_behold;
709                 break;
710         default:
711                 dprintk("Shouldn't get here: Unknown board %x for I2C IR?\n",dev->board);
712                 break;
713         }
714
715 }
716
717 static int saa7134_rc5_irq(struct saa7134_dev *dev)
718 {
719         struct card_ir *ir = dev->remote;
720         struct timeval tv;
721         u32 gap;
722         unsigned long current_jiffies, timeout;
723
724         /* get time of bit */
725         current_jiffies = jiffies;
726         do_gettimeofday(&tv);
727
728         /* avoid overflow with gap >1s */
729         if (tv.tv_sec - ir->base_time.tv_sec > 1) {
730                 gap = 200000;
731         } else {
732                 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
733                     tv.tv_usec - ir->base_time.tv_usec;
734         }
735
736         /* active code => add bit */
737         if (ir->active) {
738                 /* only if in the code (otherwise spurious IRQ or timer
739                    late) */
740                 if (ir->last_bit < 28) {
741                         ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
742                             ir_rc5_remote_gap;
743                         ir->code |= 1 << ir->last_bit;
744                 }
745                 /* starting new code */
746         } else {
747                 ir->active = 1;
748                 ir->code = 0;
749                 ir->base_time = tv;
750                 ir->last_bit = 0;
751
752                 timeout = current_jiffies + (500 + 30 * HZ) / 1000;
753                 mod_timer(&ir->timer_end, timeout);
754         }
755
756         return 1;
757 }
758
759
760 /* On NEC protocol, One has 2.25 ms, and zero has 1.125 ms
761    The first pulse (start) has 9 + 4.5 ms
762  */
763
764 static void saa7134_nec_timer(unsigned long data)
765 {
766         struct saa7134_dev *dev = (struct saa7134_dev *) data;
767         struct card_ir *ir = dev->remote;
768
769         dprintk("Cancel key repeat\n");
770
771         ir_input_nokey(ir->dev, &ir->ir);
772 }
773
774 static void nec_task(unsigned long data)
775 {
776         struct saa7134_dev *dev = (struct saa7134_dev *) data;
777         struct card_ir *ir;
778         struct timeval tv;
779         int count, pulse, oldpulse, gap;
780         u32 ircode = 0, not_code = 0;
781         int ngap = 0;
782
783         if (!data) {
784                 printk(KERN_ERR "saa713x/ir: Can't recover dev struct\n");
785                 /* GPIO will be kept disabled */
786                 return;
787         }
788
789         ir = dev->remote;
790
791         /* rising SAA7134_GPIO_GPRESCAN reads the status */
792         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
793         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
794
795         oldpulse = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2) & ir->mask_keydown;
796         pulse = oldpulse;
797
798         do_gettimeofday(&tv);
799         ir->base_time = tv;
800
801         /* Decode NEC pulsecode. This code can take up to 76.5 ms to run.
802            Unfortunately, using IRQ to decode pulse didn't work, since it uses
803            a pulse train of 38KHz. This means one pulse on each 52 us
804          */
805         do {
806                 /* Wait until the end of pulse/space or 5 ms */
807                 for (count = 0; count < 500; count++)  {
808                         udelay(10);
809                         /* rising SAA7134_GPIO_GPRESCAN reads the status */
810                         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
811                         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
812                         pulse = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2)
813                                 & ir->mask_keydown;
814                         if (pulse != oldpulse)
815                                 break;
816                 }
817
818                 do_gettimeofday(&tv);
819                 gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
820                                 tv.tv_usec - ir->base_time.tv_usec;
821
822                 if (!pulse) {
823                         /* Bit 0 has 560 us, while bit 1 has 1120 us.
824                            Do something only if bit == 1
825                          */
826                         if (ngap && (gap > 560 + 280)) {
827                                 unsigned int shift = ngap - 1;
828
829                                 /* Address first, then command */
830                                 if (shift < 8) {
831                                         shift += 8;
832                                         ircode |= 1 << shift;
833                                 } else if (shift < 16) {
834                                         not_code |= 1 << shift;
835                                 } else if (shift < 24) {
836                                         shift -= 16;
837                                         ircode |= 1 << shift;
838                                 } else {
839                                         shift -= 24;
840                                         not_code |= 1 << shift;
841                                 }
842                         }
843                         ngap++;
844                 }
845
846
847                 ir->base_time = tv;
848
849                 /* TIMEOUT - Long pulse */
850                 if (gap >= 5000)
851                         break;
852                 oldpulse = pulse;
853         } while (ngap < 32);
854
855         if (ngap == 32) {
856                 /* FIXME: should check if not_code == ~ircode */
857                 ir->code = ir_extract_bits(ircode, ir->mask_keycode);
858
859                 dprintk("scancode = 0x%02x (code = 0x%02x, notcode= 0x%02x)\n",
860                          ir->code, ircode, not_code);
861
862                 ir_input_keydown(ir->dev, &ir->ir, ir->code, ir->code);
863         } else
864                 dprintk("Repeat last key\n");
865
866         /* Keep repeating the last key */
867         mod_timer(&ir->timer_keyup, jiffies + msecs_to_jiffies(150));
868
869         saa_setl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
870 }
871
872 static int saa7134_nec_irq(struct saa7134_dev *dev)
873 {
874         struct card_ir *ir = dev->remote;
875
876         saa_clearl(SAA7134_IRQ2, SAA7134_IRQ2_INTE_GPIO18);
877         tasklet_schedule(&ir->tlet);
878
879         return 1;
880 }