1 /*
2  *
3  * Device driver for GPIO attached remote control interfaces
4  * on Conexant 2388x based TV/DVB cards.
5  *
6  * Copyright (c) 2003 Pavel Machek
7  * Copyright (c) 2004 Gerd Knorr
8  * Copyright (c) 2004, 2005 Chris Pascoe
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23  */
24 
25 #include <linux/init.h>
26 #include <linux/hrtimer.h>
27 #include <linux/pci.h>
28 #include <linux/slab.h>
29 #include <linux/module.h>
30 
31 #include "cx88.h"
32 #include <media/rc-core.h>
33 
34 #define MODULE_NAME "cx88xx"
35 
36 /* ---------------------------------------------------------------------- */
37 
38 struct cx88_IR {
39 	struct cx88_core *core;
40 	struct rc_dev *dev;
41 
42 	int users;
43 
44 	char name[32];
45 	char phys[32];
46 
47 	/* sample from gpio pin 16 */
48 	u32 sampling;
49 
50 	/* poll external decoder */
51 	int polling;
52 	struct hrtimer timer;
53 	u32 gpio_addr;
54 	u32 last_gpio;
55 	u32 mask_keycode;
56 	u32 mask_keydown;
57 	u32 mask_keyup;
58 };
59 
60 static unsigned ir_samplerate = 4;
61 module_param(ir_samplerate, uint, 0444);
62 MODULE_PARM_DESC(ir_samplerate, "IR samplerate in kHz, 1 - 20, default 4");
63 
64 static int ir_debug;
65 module_param(ir_debug, int, 0644);	/* debug level [IR] */
66 MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
67 
68 #define ir_dprintk(fmt, arg...)	if (ir_debug) \
69 	printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
70 
71 #define dprintk(fmt, arg...)	if (ir_debug) \
72 	printk(KERN_DEBUG "cx88 IR: " fmt , ##arg)
73 
74 /* ---------------------------------------------------------------------- */
75 
76 static void cx88_ir_handle_key(struct cx88_IR *ir)
77 {
78 	struct cx88_core *core = ir->core;
79 	u32 gpio, data, auxgpio;
80 
81 	/* read gpio value */
82 	gpio = cx_read(ir->gpio_addr);
83 	switch (core->boardnr) {
84 	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
85 		/* This board apparently uses a combination of 2 GPIO
86 		   to represent the keys. Additionally, the second GPIO
87 		   can be used for parity.
88 
89 		   Example:
90 
91 		   for key "5"
92 			gpio = 0x758, auxgpio = 0xe5 or 0xf5
93 		   for key "Power"
94 			gpio = 0x758, auxgpio = 0xed or 0xfd
95 		 */
96 
97 		auxgpio = cx_read(MO_GP1_IO);
98 		/* Take out the parity part */
99 		gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
100 		break;
101 	case CX88_BOARD_WINFAST_DTV1000:
102 	case CX88_BOARD_WINFAST_DTV1800H:
103 	case CX88_BOARD_WINFAST_DTV1800H_XC4000:
104 	case CX88_BOARD_WINFAST_DTV2000H_PLUS:
105 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
106 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
107 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
108 		gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
109 		auxgpio = gpio;
110 		break;
111 	default:
112 		auxgpio = gpio;
113 	}
114 	if (ir->polling) {
115 		if (ir->last_gpio == auxgpio)
116 			return;
117 		ir->last_gpio = auxgpio;
118 	}
119 
120 	/* extract data */
121 	data = ir_extract_bits(gpio, ir->mask_keycode);
122 	ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
123 		   gpio, data,
124 		   ir->polling ? "poll" : "irq",
125 		   (gpio & ir->mask_keydown) ? " down" : "",
126 		   (gpio & ir->mask_keyup) ? " up" : "");
127 
128 	if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
129 		u32 gpio_key = cx_read(MO_GP0_IO);
130 
131 		data = (data << 4) | ((gpio_key & 0xf0) >> 4);
132 
133 		rc_keydown(ir->dev, RC_TYPE_UNKNOWN, data, 0);
134 
135 	} else if (ir->core->boardnr == CX88_BOARD_PROLINK_PLAYTVPVR ||
136 		   ir->core->boardnr == CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO) {
137 		/* bit cleared on keydown, NEC scancode, 0xAAAACC, A = 0x866b */
138 		u16 addr;
139 		u8 cmd;
140 		u32 scancode;
141 
142 		addr = (data >> 8) & 0xffff;
143 		cmd  = (data >> 0) & 0x00ff;
144 		scancode = RC_SCANCODE_NECX(addr, cmd);
145 
146 		if (0 == (gpio & ir->mask_keyup))
147 			rc_keydown_notimeout(ir->dev, RC_TYPE_NEC, scancode, 0);
148 		else
149 			rc_keyup(ir->dev);
150 
151 	} else if (ir->mask_keydown) {
152 		/* bit set on keydown */
153 		if (gpio & ir->mask_keydown)
154 			rc_keydown_notimeout(ir->dev, RC_TYPE_UNKNOWN, data, 0);
155 		else
156 			rc_keyup(ir->dev);
157 
158 	} else if (ir->mask_keyup) {
159 		/* bit cleared on keydown */
160 		if (0 == (gpio & ir->mask_keyup))
161 			rc_keydown_notimeout(ir->dev, RC_TYPE_UNKNOWN, data, 0);
162 		else
163 			rc_keyup(ir->dev);
164 
165 	} else {
166 		/* can't distinguish keydown/up :-/ */
167 		rc_keydown_notimeout(ir->dev, RC_TYPE_UNKNOWN, data, 0);
168 		rc_keyup(ir->dev);
169 	}
170 }
171 
172 static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
173 {
174 	unsigned long missed;
175 	struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
176 
177 	cx88_ir_handle_key(ir);
178 	missed = hrtimer_forward_now(&ir->timer,
179 				     ktime_set(0, ir->polling * 1000000));
180 	if (missed > 1)
181 		ir_dprintk("Missed ticks %ld\n", missed - 1);
182 
183 	return HRTIMER_RESTART;
184 }
185 
186 static int __cx88_ir_start(void *priv)
187 {
188 	struct cx88_core *core = priv;
189 	struct cx88_IR *ir;
190 
191 	if (!core || !core->ir)
192 		return -EINVAL;
193 
194 	ir = core->ir;
195 
196 	if (ir->polling) {
197 		hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
198 		ir->timer.function = cx88_ir_work;
199 		hrtimer_start(&ir->timer,
200 			      ktime_set(0, ir->polling * 1000000),
201 			      HRTIMER_MODE_REL);
202 	}
203 	if (ir->sampling) {
204 		core->pci_irqmask |= PCI_INT_IR_SMPINT;
205 		cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */
206 		cx_write(MO_DDSCFG_IO, 0x5); /* enable */
207 	}
208 	return 0;
209 }
210 
211 static void __cx88_ir_stop(void *priv)
212 {
213 	struct cx88_core *core = priv;
214 	struct cx88_IR *ir;
215 
216 	if (!core || !core->ir)
217 		return;
218 
219 	ir = core->ir;
220 	if (ir->sampling) {
221 		cx_write(MO_DDSCFG_IO, 0x0);
222 		core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
223 	}
224 
225 	if (ir->polling)
226 		hrtimer_cancel(&ir->timer);
227 }
228 
229 int cx88_ir_start(struct cx88_core *core)
230 {
231 	if (core->ir->users)
232 		return __cx88_ir_start(core);
233 
234 	return 0;
235 }
236 
237 void cx88_ir_stop(struct cx88_core *core)
238 {
239 	if (core->ir->users)
240 		__cx88_ir_stop(core);
241 }
242 
243 static int cx88_ir_open(struct rc_dev *rc)
244 {
245 	struct cx88_core *core = rc->priv;
246 
247 	core->ir->users++;
248 	return __cx88_ir_start(core);
249 }
250 
251 static void cx88_ir_close(struct rc_dev *rc)
252 {
253 	struct cx88_core *core = rc->priv;
254 
255 	core->ir->users--;
256 	if (!core->ir->users)
257 		__cx88_ir_stop(core);
258 }
259 
260 /* ---------------------------------------------------------------------- */
261 
262 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
263 {
264 	struct cx88_IR *ir;
265 	struct rc_dev *dev;
266 	char *ir_codes = NULL;
267 	u64 rc_type = RC_BIT_OTHER;
268 	int err = -ENOMEM;
269 	u32 hardware_mask = 0;	/* For devices with a hardware mask, when
270 				 * used with a full-code IR table
271 				 */
272 
273 	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
274 	dev = rc_allocate_device();
275 	if (!ir || !dev)
276 		goto err_out_free;
277 
278 	ir->dev = dev;
279 
280 	/* detect & configure */
281 	switch (core->boardnr) {
282 	case CX88_BOARD_DNTV_LIVE_DVB_T:
283 	case CX88_BOARD_KWORLD_DVB_T:
284 	case CX88_BOARD_KWORLD_DVB_T_CX22702:
285 		ir_codes = RC_MAP_DNTV_LIVE_DVB_T;
286 		ir->gpio_addr = MO_GP1_IO;
287 		ir->mask_keycode = 0x1f;
288 		ir->mask_keyup = 0x60;
289 		ir->polling = 50; /* ms */
290 		break;
291 	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
292 		ir_codes = RC_MAP_CINERGY_1400;
293 		ir->sampling = 0xeb04; /* address */
294 		break;
295 	case CX88_BOARD_HAUPPAUGE:
296 	case CX88_BOARD_HAUPPAUGE_DVB_T1:
297 	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
298 	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
299 	case CX88_BOARD_HAUPPAUGE_HVR1100:
300 	case CX88_BOARD_HAUPPAUGE_HVR3000:
301 	case CX88_BOARD_HAUPPAUGE_HVR4000:
302 	case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
303 	case CX88_BOARD_PCHDTV_HD3000:
304 	case CX88_BOARD_PCHDTV_HD5500:
305 	case CX88_BOARD_HAUPPAUGE_IRONLY:
306 		ir_codes = RC_MAP_HAUPPAUGE;
307 		ir->sampling = 1;
308 		break;
309 	case CX88_BOARD_WINFAST_DTV2000H:
310 	case CX88_BOARD_WINFAST_DTV2000H_J:
311 	case CX88_BOARD_WINFAST_DTV1800H:
312 	case CX88_BOARD_WINFAST_DTV1800H_XC4000:
313 	case CX88_BOARD_WINFAST_DTV2000H_PLUS:
314 		ir_codes = RC_MAP_WINFAST;
315 		ir->gpio_addr = MO_GP0_IO;
316 		ir->mask_keycode = 0x8f8;
317 		ir->mask_keyup = 0x100;
318 		ir->polling = 50; /* ms */
319 		break;
320 	case CX88_BOARD_WINFAST2000XP_EXPERT:
321 	case CX88_BOARD_WINFAST_DTV1000:
322 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
323 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
324 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
325 		ir_codes = RC_MAP_WINFAST;
326 		ir->gpio_addr = MO_GP0_IO;
327 		ir->mask_keycode = 0x8f8;
328 		ir->mask_keyup = 0x100;
329 		ir->polling = 1; /* ms */
330 		break;
331 	case CX88_BOARD_IODATA_GVBCTV7E:
332 		ir_codes = RC_MAP_IODATA_BCTV7E;
333 		ir->gpio_addr = MO_GP0_IO;
334 		ir->mask_keycode = 0xfd;
335 		ir->mask_keydown = 0x02;
336 		ir->polling = 5; /* ms */
337 		break;
338 	case CX88_BOARD_PROLINK_PLAYTVPVR:
339 	case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
340 		/*
341 		 * It seems that this hardware is paired with NEC extended
342 		 * address 0x866b. So, unfortunately, its usage with other
343 		 * IR's with different address won't work. Still, there are
344 		 * other IR's from the same manufacturer that works, like the
345 		 * 002-T mini RC, provided with newer PV hardware
346 		 */
347 		ir_codes = RC_MAP_PIXELVIEW_MK12;
348 		rc_type = RC_BIT_NEC;
349 		ir->gpio_addr = MO_GP1_IO;
350 		ir->mask_keyup = 0x80;
351 		ir->polling = 10; /* ms */
352 		hardware_mask = 0x3f;	/* Hardware returns only 6 bits from command part */
353 		break;
354 	case CX88_BOARD_PROLINK_PV_8000GT:
355 	case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
356 		ir_codes = RC_MAP_PIXELVIEW_NEW;
357 		ir->gpio_addr = MO_GP1_IO;
358 		ir->mask_keycode = 0x3f;
359 		ir->mask_keyup = 0x80;
360 		ir->polling = 1; /* ms */
361 		break;
362 	case CX88_BOARD_KWORLD_LTV883:
363 		ir_codes = RC_MAP_PIXELVIEW;
364 		ir->gpio_addr = MO_GP1_IO;
365 		ir->mask_keycode = 0x1f;
366 		ir->mask_keyup = 0x60;
367 		ir->polling = 1; /* ms */
368 		break;
369 	case CX88_BOARD_ADSTECH_DVB_T_PCI:
370 		ir_codes = RC_MAP_ADSTECH_DVB_T_PCI;
371 		ir->gpio_addr = MO_GP1_IO;
372 		ir->mask_keycode = 0xbf;
373 		ir->mask_keyup = 0x40;
374 		ir->polling = 50; /* ms */
375 		break;
376 	case CX88_BOARD_MSI_TVANYWHERE_MASTER:
377 		ir_codes = RC_MAP_MSI_TVANYWHERE;
378 		ir->gpio_addr = MO_GP1_IO;
379 		ir->mask_keycode = 0x1f;
380 		ir->mask_keyup = 0x40;
381 		ir->polling = 1; /* ms */
382 		break;
383 	case CX88_BOARD_AVERTV_303:
384 	case CX88_BOARD_AVERTV_STUDIO_303:
385 		ir_codes         = RC_MAP_AVERTV_303;
386 		ir->gpio_addr    = MO_GP2_IO;
387 		ir->mask_keycode = 0xfb;
388 		ir->mask_keydown = 0x02;
389 		ir->polling      = 50; /* ms */
390 		break;
391 	case CX88_BOARD_OMICOM_SS4_PCI:
392 	case CX88_BOARD_SATTRADE_ST4200:
393 	case CX88_BOARD_TBS_8920:
394 	case CX88_BOARD_TBS_8910:
395 	case CX88_BOARD_PROF_7300:
396 	case CX88_BOARD_PROF_7301:
397 	case CX88_BOARD_PROF_6200:
398 		ir_codes = RC_MAP_TBS_NEC;
399 		ir->sampling = 0xff00; /* address */
400 		break;
401 	case CX88_BOARD_TEVII_S464:
402 	case CX88_BOARD_TEVII_S460:
403 	case CX88_BOARD_TEVII_S420:
404 		ir_codes = RC_MAP_TEVII_NEC;
405 		ir->sampling = 0xff00; /* address */
406 		break;
407 	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
408 		ir_codes         = RC_MAP_DNTV_LIVE_DVBT_PRO;
409 		ir->sampling     = 0xff00; /* address */
410 		break;
411 	case CX88_BOARD_NORWOOD_MICRO:
412 		ir_codes         = RC_MAP_NORWOOD;
413 		ir->gpio_addr    = MO_GP1_IO;
414 		ir->mask_keycode = 0x0e;
415 		ir->mask_keyup   = 0x80;
416 		ir->polling      = 50; /* ms */
417 		break;
418 	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
419 		ir_codes         = RC_MAP_NPGTECH;
420 		ir->gpio_addr    = MO_GP0_IO;
421 		ir->mask_keycode = 0xfa;
422 		ir->polling      = 50; /* ms */
423 		break;
424 	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
425 		ir_codes         = RC_MAP_PINNACLE_PCTV_HD;
426 		ir->sampling     = 1;
427 		break;
428 	case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
429 		ir_codes         = RC_MAP_POWERCOLOR_REAL_ANGEL;
430 		ir->gpio_addr    = MO_GP2_IO;
431 		ir->mask_keycode = 0x7e;
432 		ir->polling      = 100; /* ms */
433 		break;
434 	case CX88_BOARD_TWINHAN_VP1027_DVBS:
435 		ir_codes         = RC_MAP_TWINHAN_VP1027_DVBS;
436 		ir->sampling     = 0xff00; /* address */
437 		break;
438 	}
439 
440 	if (!ir_codes) {
441 		err = -ENODEV;
442 		goto err_out_free;
443 	}
444 
445 	/*
446 	 * The usage of mask_keycode were very convenient, due to several
447 	 * reasons. Among others, the scancode tables were using the scancode
448 	 * as the index elements. So, the less bits it was used, the smaller
449 	 * the table were stored. After the input changes, the better is to use
450 	 * the full scancodes, since it allows replacing the IR remote by
451 	 * another one. Unfortunately, there are still some hardware, like
452 	 * Pixelview Ultra Pro, where only part of the scancode is sent via
453 	 * GPIO. So, there's no way to get the full scancode. Due to that,
454 	 * hardware_mask were introduced here: it represents those hardware
455 	 * that has such limits.
456 	 */
457 	if (hardware_mask && !ir->mask_keycode)
458 		ir->mask_keycode = hardware_mask;
459 
460 	/* init input device */
461 	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
462 	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
463 
464 	dev->input_name = ir->name;
465 	dev->input_phys = ir->phys;
466 	dev->input_id.bustype = BUS_PCI;
467 	dev->input_id.version = 1;
468 	if (pci->subsystem_vendor) {
469 		dev->input_id.vendor = pci->subsystem_vendor;
470 		dev->input_id.product = pci->subsystem_device;
471 	} else {
472 		dev->input_id.vendor = pci->vendor;
473 		dev->input_id.product = pci->device;
474 	}
475 	dev->dev.parent = &pci->dev;
476 	dev->map_name = ir_codes;
477 	dev->driver_name = MODULE_NAME;
478 	dev->priv = core;
479 	dev->open = cx88_ir_open;
480 	dev->close = cx88_ir_close;
481 	dev->scancode_mask = hardware_mask;
482 
483 	if (ir->sampling) {
484 		dev->driver_type = RC_DRIVER_IR_RAW;
485 		dev->timeout = 10 * 1000 * 1000; /* 10 ms */
486 	} else {
487 		dev->driver_type = RC_DRIVER_SCANCODE;
488 		dev->allowed_protocols = rc_type;
489 	}
490 
491 	ir->core = core;
492 	core->ir = ir;
493 
494 	/* all done */
495 	err = rc_register_device(dev);
496 	if (err)
497 		goto err_out_free;
498 
499 	return 0;
500 
501 err_out_free:
502 	rc_free_device(dev);
503 	core->ir = NULL;
504 	kfree(ir);
505 	return err;
506 }
507 
508 int cx88_ir_fini(struct cx88_core *core)
509 {
510 	struct cx88_IR *ir = core->ir;
511 
512 	/* skip detach on non attached boards */
513 	if (NULL == ir)
514 		return 0;
515 
516 	cx88_ir_stop(core);
517 	rc_unregister_device(ir->dev);
518 	kfree(ir);
519 
520 	/* done */
521 	core->ir = NULL;
522 	return 0;
523 }
524 
525 /* ---------------------------------------------------------------------- */
526 
527 void cx88_ir_irq(struct cx88_core *core)
528 {
529 	struct cx88_IR *ir = core->ir;
530 	u32 samples;
531 	unsigned todo, bits;
532 	struct ir_raw_event ev;
533 
534 	if (!ir || !ir->sampling)
535 		return;
536 
537 	/*
538 	 * Samples are stored in a 32 bit register, oldest sample in
539 	 * the msb. A set bit represents space and an unset bit
540 	 * represents a pulse.
541 	 */
542 	samples = cx_read(MO_SAMPLE_IO);
543 
544 	if (samples == 0xff && ir->dev->idle)
545 		return;
546 
547 	init_ir_raw_event(&ev);
548 	for (todo = 32; todo > 0; todo -= bits) {
549 		ev.pulse = samples & 0x80000000 ? false : true;
550 		bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples));
551 		ev.duration = (bits * (NSEC_PER_SEC / 1000)) / ir_samplerate;
552 		ir_raw_event_store_with_filter(ir->dev, &ev);
553 		samples <<= bits;
554 	}
555 	ir_raw_event_handle(ir->dev);
556 }
557 
558 static int get_key_pvr2000(struct IR_i2c *ir, enum rc_type *protocol,
559 			   u32 *scancode, u8 *toggle)
560 {
561 	int flags, code;
562 
563 	/* poll IR chip */
564 	flags = i2c_smbus_read_byte_data(ir->c, 0x10);
565 	if (flags < 0) {
566 		dprintk("read error\n");
567 		return 0;
568 	}
569 	/* key pressed ? */
570 	if (0 == (flags & 0x80))
571 		return 0;
572 
573 	/* read actual key code */
574 	code = i2c_smbus_read_byte_data(ir->c, 0x00);
575 	if (code < 0) {
576 		dprintk("read error\n");
577 		return 0;
578 	}
579 
580 	dprintk("IR Key/Flags: (0x%02x/0x%02x)\n",
581 		   code & 0xff, flags & 0xff);
582 
583 	*protocol = RC_TYPE_UNKNOWN;
584 	*scancode = code & 0xff;
585 	*toggle = 0;
586 	return 1;
587 }
588 
589 void cx88_i2c_init_ir(struct cx88_core *core)
590 {
591 	struct i2c_board_info info;
592 	const unsigned short default_addr_list[] = {
593 		0x18, 0x6b, 0x71,
594 		I2C_CLIENT_END
595 	};
596 	const unsigned short pvr2000_addr_list[] = {
597 		0x18, 0x1a,
598 		I2C_CLIENT_END
599 	};
600 	const unsigned short *addr_list = default_addr_list;
601 	const unsigned short *addrp;
602 	/* Instantiate the IR receiver device, if present */
603 	if (0 != core->i2c_rc)
604 		return;
605 
606 	memset(&info, 0, sizeof(struct i2c_board_info));
607 	strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
608 
609 	switch (core->boardnr) {
610 	case CX88_BOARD_LEADTEK_PVR2000:
611 		addr_list = pvr2000_addr_list;
612 		core->init_data.name = "cx88 Leadtek PVR 2000 remote";
613 		core->init_data.type = RC_BIT_UNKNOWN;
614 		core->init_data.get_key = get_key_pvr2000;
615 		core->init_data.ir_codes = RC_MAP_EMPTY;
616 		break;
617 	}
618 
619 	/*
620 	 * We can't call i2c_new_probed_device() because it uses
621 	 * quick writes for probing and at least some RC receiver
622 	 * devices only reply to reads.
623 	 * Also, Hauppauge XVR needs to be specified, as address 0x71
624 	 * conflicts with another remote type used with saa7134
625 	 */
626 	for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) {
627 		info.platform_data = NULL;
628 		memset(&core->init_data, 0, sizeof(core->init_data));
629 
630 		if (*addrp == 0x71) {
631 			/* Hauppauge XVR */
632 			core->init_data.name = "cx88 Hauppauge XVR remote";
633 			core->init_data.ir_codes = RC_MAP_HAUPPAUGE;
634 			core->init_data.type = RC_BIT_RC5;
635 			core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
636 
637 			info.platform_data = &core->init_data;
638 		}
639 		if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0,
640 					I2C_SMBUS_READ, 0,
641 					I2C_SMBUS_QUICK, NULL) >= 0) {
642 			info.addr = *addrp;
643 			i2c_new_device(&core->i2c_adap, &info);
644 			break;
645 		}
646 	}
647 }
648 
649 /* ---------------------------------------------------------------------- */
650 
651 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
652 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
653 MODULE_LICENSE("GPL");
654