1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *
4  * Device driver for GPIO attached remote control interfaces
5  * on Conexant 2388x based TV/DVB cards.
6  *
7  * Copyright (c) 2003 Pavel Machek
8  * Copyright (c) 2004 Gerd Knorr
9  * Copyright (c) 2004, 2005 Chris Pascoe
10  */
11 
12 #include "cx88.h"
13 
14 #include <linux/init.h>
15 #include <linux/hrtimer.h>
16 #include <linux/pci.h>
17 #include <linux/slab.h>
18 #include <linux/module.h>
19 
20 #include <media/rc-core.h>
21 
22 #define MODULE_NAME "cx88xx"
23 
24 /* ---------------------------------------------------------------------- */
25 
26 struct cx88_IR {
27 	struct cx88_core *core;
28 	struct rc_dev *dev;
29 
30 	int users;
31 
32 	char name[32];
33 	char phys[32];
34 
35 	/* sample from gpio pin 16 */
36 	u32 sampling;
37 
38 	/* poll external decoder */
39 	int polling;
40 	struct hrtimer timer;
41 	u32 gpio_addr;
42 	u32 last_gpio;
43 	u32 mask_keycode;
44 	u32 mask_keydown;
45 	u32 mask_keyup;
46 };
47 
48 static unsigned int ir_samplerate = 4;
49 module_param(ir_samplerate, uint, 0444);
50 MODULE_PARM_DESC(ir_samplerate, "IR samplerate in kHz, 1 - 20, default 4");
51 
52 static int ir_debug;
53 module_param(ir_debug, int, 0644);	/* debug level [IR] */
54 MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
55 
56 #define ir_dprintk(fmt, arg...)	do {					\
57 	if (ir_debug)							\
58 		printk(KERN_DEBUG "%s IR: " fmt, ir->core->name, ##arg);\
59 } while (0)
60 
61 #define dprintk(fmt, arg...) do {					\
62 	if (ir_debug)							\
63 		printk(KERN_DEBUG "cx88 IR: " fmt, ##arg);		\
64 } while (0)
65 
66 /* ---------------------------------------------------------------------- */
67 
68 static void cx88_ir_handle_key(struct cx88_IR *ir)
69 {
70 	struct cx88_core *core = ir->core;
71 	u32 gpio, data, auxgpio;
72 
73 	/* read gpio value */
74 	gpio = cx_read(ir->gpio_addr);
75 	switch (core->boardnr) {
76 	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
77 		/*
78 		 * This board apparently uses a combination of 2 GPIO
79 		 * to represent the keys. Additionally, the second GPIO
80 		 * can be used for parity.
81 		 *
82 		 * Example:
83 		 *
84 		 * for key "5"
85 		 *	gpio = 0x758, auxgpio = 0xe5 or 0xf5
86 		 * for key "Power"
87 		 *	gpio = 0x758, auxgpio = 0xed or 0xfd
88 		 */
89 
90 		auxgpio = cx_read(MO_GP1_IO);
91 		/* Take out the parity part */
92 		gpio = (gpio & 0x7fd) + (auxgpio & 0xef);
93 		break;
94 	case CX88_BOARD_WINFAST_DTV1000:
95 	case CX88_BOARD_WINFAST_DTV1800H:
96 	case CX88_BOARD_WINFAST_DTV1800H_XC4000:
97 	case CX88_BOARD_WINFAST_DTV2000H_PLUS:
98 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
99 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
100 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
101 		gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
102 		auxgpio = gpio;
103 		break;
104 	default:
105 		auxgpio = gpio;
106 	}
107 	if (ir->polling) {
108 		if (ir->last_gpio == auxgpio)
109 			return;
110 		ir->last_gpio = auxgpio;
111 	}
112 
113 	/* extract data */
114 	data = ir_extract_bits(gpio, ir->mask_keycode);
115 	ir_dprintk("irq gpio=0x%x code=%d | %s%s%s\n",
116 		   gpio, data,
117 		   ir->polling ? "poll" : "irq",
118 		   (gpio & ir->mask_keydown) ? " down" : "",
119 		   (gpio & ir->mask_keyup) ? " up" : "");
120 
121 	if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
122 		u32 gpio_key = cx_read(MO_GP0_IO);
123 
124 		data = (data << 4) | ((gpio_key & 0xf0) >> 4);
125 
126 		rc_keydown(ir->dev, RC_PROTO_UNKNOWN, data, 0);
127 
128 	} else if (ir->core->boardnr == CX88_BOARD_PROLINK_PLAYTVPVR ||
129 		   ir->core->boardnr == CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO) {
130 		/* bit cleared on keydown, NEC scancode, 0xAAAACC, A = 0x866b */
131 		u16 addr;
132 		u8 cmd;
133 		u32 scancode;
134 
135 		addr = (data >> 8) & 0xffff;
136 		cmd  = (data >> 0) & 0x00ff;
137 		scancode = RC_SCANCODE_NECX(addr, cmd);
138 
139 		if (0 == (gpio & ir->mask_keyup))
140 			rc_keydown_notimeout(ir->dev, RC_PROTO_NECX, scancode,
141 					     0);
142 		else
143 			rc_keyup(ir->dev);
144 
145 	} else if (ir->mask_keydown) {
146 		/* bit set on keydown */
147 		if (gpio & ir->mask_keydown)
148 			rc_keydown_notimeout(ir->dev, RC_PROTO_UNKNOWN, data,
149 					     0);
150 		else
151 			rc_keyup(ir->dev);
152 
153 	} else if (ir->mask_keyup) {
154 		/* bit cleared on keydown */
155 		if (0 == (gpio & ir->mask_keyup))
156 			rc_keydown_notimeout(ir->dev, RC_PROTO_UNKNOWN, data,
157 					     0);
158 		else
159 			rc_keyup(ir->dev);
160 
161 	} else {
162 		/* can't distinguish keydown/up :-/ */
163 		rc_keydown_notimeout(ir->dev, RC_PROTO_UNKNOWN, data, 0);
164 		rc_keyup(ir->dev);
165 	}
166 }
167 
168 static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
169 {
170 	u64 missed;
171 	struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
172 
173 	cx88_ir_handle_key(ir);
174 	missed = hrtimer_forward_now(&ir->timer,
175 				     ktime_set(0, ir->polling * 1000000));
176 	if (missed > 1)
177 		ir_dprintk("Missed ticks %llu\n", missed - 1);
178 
179 	return HRTIMER_RESTART;
180 }
181 
182 static int __cx88_ir_start(void *priv)
183 {
184 	struct cx88_core *core = priv;
185 	struct cx88_IR *ir;
186 
187 	if (!core || !core->ir)
188 		return -EINVAL;
189 
190 	ir = core->ir;
191 
192 	if (ir->polling) {
193 		hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
194 		ir->timer.function = cx88_ir_work;
195 		hrtimer_start(&ir->timer,
196 			      ktime_set(0, ir->polling * 1000000),
197 			      HRTIMER_MODE_REL);
198 	}
199 	if (ir->sampling) {
200 		core->pci_irqmask |= PCI_INT_IR_SMPINT;
201 		cx_write(MO_DDS_IO, 0x33F286 * ir_samplerate); /* samplerate */
202 		cx_write(MO_DDSCFG_IO, 0x5); /* enable */
203 	}
204 	return 0;
205 }
206 
207 static void __cx88_ir_stop(void *priv)
208 {
209 	struct cx88_core *core = priv;
210 	struct cx88_IR *ir;
211 
212 	if (!core || !core->ir)
213 		return;
214 
215 	ir = core->ir;
216 	if (ir->sampling) {
217 		cx_write(MO_DDSCFG_IO, 0x0);
218 		core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
219 	}
220 
221 	if (ir->polling)
222 		hrtimer_cancel(&ir->timer);
223 }
224 
225 int cx88_ir_start(struct cx88_core *core)
226 {
227 	if (core->ir->users)
228 		return __cx88_ir_start(core);
229 
230 	return 0;
231 }
232 EXPORT_SYMBOL(cx88_ir_start);
233 
234 void cx88_ir_stop(struct cx88_core *core)
235 {
236 	if (core->ir->users)
237 		__cx88_ir_stop(core);
238 }
239 EXPORT_SYMBOL(cx88_ir_stop);
240 
241 static int cx88_ir_open(struct rc_dev *rc)
242 {
243 	struct cx88_core *core = rc->priv;
244 
245 	core->ir->users++;
246 	return __cx88_ir_start(core);
247 }
248 
249 static void cx88_ir_close(struct rc_dev *rc)
250 {
251 	struct cx88_core *core = rc->priv;
252 
253 	core->ir->users--;
254 	if (!core->ir->users)
255 		__cx88_ir_stop(core);
256 }
257 
258 /* ---------------------------------------------------------------------- */
259 
260 int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
261 {
262 	struct cx88_IR *ir;
263 	struct rc_dev *dev;
264 	char *ir_codes = NULL;
265 	u64 rc_proto = RC_PROTO_BIT_OTHER;
266 	int err = -ENOMEM;
267 	u32 hardware_mask = 0;	/* For devices with a hardware mask, when
268 				 * used with a full-code IR table
269 				 */
270 
271 	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
272 	dev = rc_allocate_device(RC_DRIVER_IR_RAW);
273 	if (!ir || !dev)
274 		goto err_out_free;
275 
276 	ir->dev = dev;
277 
278 	/* detect & configure */
279 	switch (core->boardnr) {
280 	case CX88_BOARD_DNTV_LIVE_DVB_T:
281 	case CX88_BOARD_KWORLD_DVB_T:
282 	case CX88_BOARD_KWORLD_DVB_T_CX22702:
283 		ir_codes = RC_MAP_DNTV_LIVE_DVB_T;
284 		ir->gpio_addr = MO_GP1_IO;
285 		ir->mask_keycode = 0x1f;
286 		ir->mask_keyup = 0x60;
287 		ir->polling = 50; /* ms */
288 		break;
289 	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
290 		ir_codes = RC_MAP_CINERGY_1400;
291 		ir->sampling = 0xeb04; /* address */
292 		break;
293 	case CX88_BOARD_HAUPPAUGE:
294 	case CX88_BOARD_HAUPPAUGE_DVB_T1:
295 	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
296 	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
297 	case CX88_BOARD_HAUPPAUGE_HVR1100:
298 	case CX88_BOARD_HAUPPAUGE_HVR3000:
299 	case CX88_BOARD_HAUPPAUGE_HVR4000:
300 	case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
301 	case CX88_BOARD_PCHDTV_HD3000:
302 	case CX88_BOARD_PCHDTV_HD5500:
303 	case CX88_BOARD_HAUPPAUGE_IRONLY:
304 		ir_codes = RC_MAP_HAUPPAUGE;
305 		ir->sampling = 1;
306 		break;
307 	case CX88_BOARD_WINFAST_DTV2000H:
308 	case CX88_BOARD_WINFAST_DTV2000H_J:
309 	case CX88_BOARD_WINFAST_DTV1800H:
310 	case CX88_BOARD_WINFAST_DTV1800H_XC4000:
311 	case CX88_BOARD_WINFAST_DTV2000H_PLUS:
312 		ir_codes = RC_MAP_WINFAST;
313 		ir->gpio_addr = MO_GP0_IO;
314 		ir->mask_keycode = 0x8f8;
315 		ir->mask_keyup = 0x100;
316 		ir->polling = 50; /* ms */
317 		break;
318 	case CX88_BOARD_WINFAST2000XP_EXPERT:
319 	case CX88_BOARD_WINFAST_DTV1000:
320 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
321 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F36:
322 	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL_6F43:
323 		ir_codes = RC_MAP_WINFAST;
324 		ir->gpio_addr = MO_GP0_IO;
325 		ir->mask_keycode = 0x8f8;
326 		ir->mask_keyup = 0x100;
327 		ir->polling = 1; /* ms */
328 		break;
329 	case CX88_BOARD_IODATA_GVBCTV7E:
330 		ir_codes = RC_MAP_IODATA_BCTV7E;
331 		ir->gpio_addr = MO_GP0_IO;
332 		ir->mask_keycode = 0xfd;
333 		ir->mask_keydown = 0x02;
334 		ir->polling = 5; /* ms */
335 		break;
336 	case CX88_BOARD_PROLINK_PLAYTVPVR:
337 	case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
338 		/*
339 		 * It seems that this hardware is paired with NEC extended
340 		 * address 0x866b. So, unfortunately, its usage with other
341 		 * IR's with different address won't work. Still, there are
342 		 * other IR's from the same manufacturer that works, like the
343 		 * 002-T mini RC, provided with newer PV hardware
344 		 */
345 		ir_codes = RC_MAP_PIXELVIEW_MK12;
346 		rc_proto = RC_PROTO_BIT_NECX;
347 		ir->gpio_addr = MO_GP1_IO;
348 		ir->mask_keyup = 0x80;
349 		ir->polling = 10; /* ms */
350 		hardware_mask = 0x3f;	/* Hardware returns only 6 bits from command part */
351 		break;
352 	case CX88_BOARD_PROLINK_PV_8000GT:
353 	case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
354 		ir_codes = RC_MAP_PIXELVIEW_NEW;
355 		ir->gpio_addr = MO_GP1_IO;
356 		ir->mask_keycode = 0x3f;
357 		ir->mask_keyup = 0x80;
358 		ir->polling = 1; /* ms */
359 		break;
360 	case CX88_BOARD_KWORLD_LTV883:
361 		ir_codes = RC_MAP_PIXELVIEW;
362 		ir->gpio_addr = MO_GP1_IO;
363 		ir->mask_keycode = 0x1f;
364 		ir->mask_keyup = 0x60;
365 		ir->polling = 1; /* ms */
366 		break;
367 	case CX88_BOARD_ADSTECH_DVB_T_PCI:
368 		ir_codes = RC_MAP_ADSTECH_DVB_T_PCI;
369 		ir->gpio_addr = MO_GP1_IO;
370 		ir->mask_keycode = 0xbf;
371 		ir->mask_keyup = 0x40;
372 		ir->polling = 50; /* ms */
373 		break;
374 	case CX88_BOARD_MSI_TVANYWHERE_MASTER:
375 		ir_codes = RC_MAP_MSI_TVANYWHERE;
376 		ir->gpio_addr = MO_GP1_IO;
377 		ir->mask_keycode = 0x1f;
378 		ir->mask_keyup = 0x40;
379 		ir->polling = 1; /* ms */
380 		break;
381 	case CX88_BOARD_AVERTV_303:
382 	case CX88_BOARD_AVERTV_STUDIO_303:
383 		ir_codes         = RC_MAP_AVERTV_303;
384 		ir->gpio_addr    = MO_GP2_IO;
385 		ir->mask_keycode = 0xfb;
386 		ir->mask_keydown = 0x02;
387 		ir->polling      = 50; /* ms */
388 		break;
389 	case CX88_BOARD_OMICOM_SS4_PCI:
390 	case CX88_BOARD_SATTRADE_ST4200:
391 	case CX88_BOARD_TBS_8920:
392 	case CX88_BOARD_TBS_8910:
393 	case CX88_BOARD_PROF_7300:
394 	case CX88_BOARD_PROF_7301:
395 	case CX88_BOARD_PROF_6200:
396 		ir_codes = RC_MAP_TBS_NEC;
397 		ir->sampling = 0xff00; /* address */
398 		break;
399 	case CX88_BOARD_TEVII_S464:
400 	case CX88_BOARD_TEVII_S460:
401 	case CX88_BOARD_TEVII_S420:
402 		ir_codes = RC_MAP_TEVII_NEC;
403 		ir->sampling = 0xff00; /* address */
404 		break;
405 	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
406 		ir_codes         = RC_MAP_DNTV_LIVE_DVBT_PRO;
407 		ir->sampling     = 0xff00; /* address */
408 		break;
409 	case CX88_BOARD_NORWOOD_MICRO:
410 		ir_codes         = RC_MAP_NORWOOD;
411 		ir->gpio_addr    = MO_GP1_IO;
412 		ir->mask_keycode = 0x0e;
413 		ir->mask_keyup   = 0x80;
414 		ir->polling      = 50; /* ms */
415 		break;
416 	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
417 		ir_codes         = RC_MAP_NPGTECH;
418 		ir->gpio_addr    = MO_GP0_IO;
419 		ir->mask_keycode = 0xfa;
420 		ir->polling      = 50; /* ms */
421 		break;
422 	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
423 		ir_codes         = RC_MAP_PINNACLE_PCTV_HD;
424 		ir->sampling     = 1;
425 		break;
426 	case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
427 		ir_codes         = RC_MAP_POWERCOLOR_REAL_ANGEL;
428 		ir->gpio_addr    = MO_GP2_IO;
429 		ir->mask_keycode = 0x7e;
430 		ir->polling      = 100; /* ms */
431 		break;
432 	case CX88_BOARD_TWINHAN_VP1027_DVBS:
433 		ir_codes         = RC_MAP_TWINHAN_VP1027_DVBS;
434 		ir->sampling     = 0xff00; /* address */
435 		break;
436 	}
437 
438 	if (!ir_codes) {
439 		err = -ENODEV;
440 		goto err_out_free;
441 	}
442 
443 	/*
444 	 * The usage of mask_keycode were very convenient, due to several
445 	 * reasons. Among others, the scancode tables were using the scancode
446 	 * as the index elements. So, the less bits it was used, the smaller
447 	 * the table were stored. After the input changes, the better is to use
448 	 * the full scancodes, since it allows replacing the IR remote by
449 	 * another one. Unfortunately, there are still some hardware, like
450 	 * Pixelview Ultra Pro, where only part of the scancode is sent via
451 	 * GPIO. So, there's no way to get the full scancode. Due to that,
452 	 * hardware_mask were introduced here: it represents those hardware
453 	 * that has such limits.
454 	 */
455 	if (hardware_mask && !ir->mask_keycode)
456 		ir->mask_keycode = hardware_mask;
457 
458 	/* init input device */
459 	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
460 	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
461 
462 	dev->device_name = ir->name;
463 	dev->input_phys = ir->phys;
464 	dev->input_id.bustype = BUS_PCI;
465 	dev->input_id.version = 1;
466 	if (pci->subsystem_vendor) {
467 		dev->input_id.vendor = pci->subsystem_vendor;
468 		dev->input_id.product = pci->subsystem_device;
469 	} else {
470 		dev->input_id.vendor = pci->vendor;
471 		dev->input_id.product = pci->device;
472 	}
473 	dev->dev.parent = &pci->dev;
474 	dev->map_name = ir_codes;
475 	dev->driver_name = MODULE_NAME;
476 	dev->priv = core;
477 	dev->open = cx88_ir_open;
478 	dev->close = cx88_ir_close;
479 	dev->scancode_mask = hardware_mask;
480 
481 	if (ir->sampling) {
482 		dev->timeout = MS_TO_US(10); /* 10 ms */
483 	} else {
484 		dev->driver_type = RC_DRIVER_SCANCODE;
485 		dev->allowed_protocols = rc_proto;
486 	}
487 
488 	ir->core = core;
489 	core->ir = ir;
490 
491 	/* all done */
492 	err = rc_register_device(dev);
493 	if (err)
494 		goto err_out_free;
495 
496 	return 0;
497 
498 err_out_free:
499 	rc_free_device(dev);
500 	core->ir = NULL;
501 	kfree(ir);
502 	return err;
503 }
504 
505 int cx88_ir_fini(struct cx88_core *core)
506 {
507 	struct cx88_IR *ir = core->ir;
508 
509 	/* skip detach on non attached boards */
510 	if (!ir)
511 		return 0;
512 
513 	cx88_ir_stop(core);
514 	rc_unregister_device(ir->dev);
515 	kfree(ir);
516 
517 	/* done */
518 	core->ir = NULL;
519 	return 0;
520 }
521 
522 /* ---------------------------------------------------------------------- */
523 
524 void cx88_ir_irq(struct cx88_core *core)
525 {
526 	struct cx88_IR *ir = core->ir;
527 	u32 samples;
528 	unsigned int todo, bits;
529 	struct ir_raw_event ev = {};
530 
531 	if (!ir || !ir->sampling)
532 		return;
533 
534 	/*
535 	 * Samples are stored in a 32 bit register, oldest sample in
536 	 * the msb. A set bit represents space and an unset bit
537 	 * represents a pulse.
538 	 */
539 	samples = cx_read(MO_SAMPLE_IO);
540 
541 	if (samples == 0xff && ir->dev->idle)
542 		return;
543 
544 	for (todo = 32; todo > 0; todo -= bits) {
545 		ev.pulse = samples & 0x80000000 ? false : true;
546 		bits = min(todo, 32U - fls(ev.pulse ? samples : ~samples));
547 		ev.duration = (bits * (USEC_PER_SEC / 1000)) / ir_samplerate;
548 		ir_raw_event_store_with_filter(ir->dev, &ev);
549 		samples <<= bits;
550 	}
551 	ir_raw_event_handle(ir->dev);
552 }
553 
554 static int get_key_pvr2000(struct IR_i2c *ir, enum rc_proto *protocol,
555 			   u32 *scancode, u8 *toggle)
556 {
557 	int flags, code;
558 
559 	/* poll IR chip */
560 	flags = i2c_smbus_read_byte_data(ir->c, 0x10);
561 	if (flags < 0) {
562 		dprintk("read error\n");
563 		return 0;
564 	}
565 	/* key pressed ? */
566 	if (0 == (flags & 0x80))
567 		return 0;
568 
569 	/* read actual key code */
570 	code = i2c_smbus_read_byte_data(ir->c, 0x00);
571 	if (code < 0) {
572 		dprintk("read error\n");
573 		return 0;
574 	}
575 
576 	dprintk("IR Key/Flags: (0x%02x/0x%02x)\n",
577 		code & 0xff, flags & 0xff);
578 
579 	*protocol = RC_PROTO_UNKNOWN;
580 	*scancode = code & 0xff;
581 	*toggle = 0;
582 	return 1;
583 }
584 
585 void cx88_i2c_init_ir(struct cx88_core *core)
586 {
587 	struct i2c_board_info info;
588 	static const unsigned short default_addr_list[] = {
589 		0x18, 0x6b, 0x71,
590 		I2C_CLIENT_END
591 	};
592 	static const unsigned short pvr2000_addr_list[] = {
593 		0x18, 0x1a,
594 		I2C_CLIENT_END
595 	};
596 	const unsigned short *addr_list = default_addr_list;
597 	const unsigned short *addrp;
598 	/* Instantiate the IR receiver device, if present */
599 	if (core->i2c_rc != 0)
600 		return;
601 
602 	memset(&info, 0, sizeof(struct i2c_board_info));
603 	strscpy(info.type, "ir_video", I2C_NAME_SIZE);
604 
605 	switch (core->boardnr) {
606 	case CX88_BOARD_LEADTEK_PVR2000:
607 		addr_list = pvr2000_addr_list;
608 		core->init_data.name = "cx88 Leadtek PVR 2000 remote";
609 		core->init_data.type = RC_PROTO_BIT_UNKNOWN;
610 		core->init_data.get_key = get_key_pvr2000;
611 		core->init_data.ir_codes = RC_MAP_EMPTY;
612 		break;
613 	}
614 
615 	/*
616 	 * We can't call i2c_new_scanned_device() because it uses
617 	 * quick writes for probing and at least some RC receiver
618 	 * devices only reply to reads.
619 	 * Also, Hauppauge XVR needs to be specified, as address 0x71
620 	 * conflicts with another remote type used with saa7134
621 	 */
622 	for (addrp = addr_list; *addrp != I2C_CLIENT_END; addrp++) {
623 		info.platform_data = NULL;
624 		memset(&core->init_data, 0, sizeof(core->init_data));
625 
626 		if (*addrp == 0x71) {
627 			/* Hauppauge Z8F0811 */
628 			strscpy(info.type, "ir_z8f0811_haup", I2C_NAME_SIZE);
629 			core->init_data.name = core->board.name;
630 			core->init_data.ir_codes = RC_MAP_HAUPPAUGE;
631 			core->init_data.type = RC_PROTO_BIT_RC5 |
632 				RC_PROTO_BIT_RC6_MCE | RC_PROTO_BIT_RC6_6A_32;
633 			core->init_data.internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
634 
635 			info.platform_data = &core->init_data;
636 		}
637 		if (i2c_smbus_xfer(&core->i2c_adap, *addrp, 0,
638 				   I2C_SMBUS_READ, 0,
639 				   I2C_SMBUS_QUICK, NULL) >= 0) {
640 			info.addr = *addrp;
641 			i2c_new_client_device(&core->i2c_adap, &info);
642 			break;
643 		}
644 	}
645 }
646 
647 /* ---------------------------------------------------------------------- */
648 
649 MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
650 MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
651 MODULE_LICENSE("GPL");
652