1 /*
2  * Realtek RTL28xxU DVB USB driver
3  *
4  * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
5  * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
6  * Copyright (C) 2012 Thomas Mair <thomas.mair86@googlemail.com>
7  *
8  *    This program is free software; you can redistribute it and/or modify
9  *    it under the terms of the GNU General Public License as published by
10  *    the Free Software Foundation; either version 2 of the License, or
11  *    (at your option) any later version.
12  *
13  *    This program is distributed in the hope that it will be useful,
14  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
15  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  *    GNU General Public License for more details.
17  *
18  *    You should have received a copy of the GNU General Public License along
19  *    with this program; if not, write to the Free Software Foundation, Inc.,
20  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21  */
22 
23 #include "rtl28xxu.h"
24 
25 #include "rtl2830.h"
26 #include "rtl2832.h"
27 
28 #include "qt1010.h"
29 #include "mt2060.h"
30 #include "mxl5005s.h"
31 #include "fc0012.h"
32 #include "fc0013.h"
33 #include "e4000.h"
34 #include "fc2580.h"
35 #include "tua9001.h"
36 
37 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
38 
39 static int rtl28xxu_ctrl_msg(struct dvb_usb_device *d, struct rtl28xxu_req *req)
40 {
41 	int ret;
42 	unsigned int pipe;
43 	u8 requesttype;
44 	u8 *buf;
45 
46 	buf = kmalloc(req->size, GFP_KERNEL);
47 	if (!buf) {
48 		ret = -ENOMEM;
49 		goto err;
50 	}
51 
52 	if (req->index & CMD_WR_FLAG) {
53 		/* write */
54 		memcpy(buf, req->data, req->size);
55 		requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
56 		pipe = usb_sndctrlpipe(d->udev, 0);
57 	} else {
58 		/* read */
59 		requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
60 		pipe = usb_rcvctrlpipe(d->udev, 0);
61 	}
62 
63 	ret = usb_control_msg(d->udev, pipe, 0, requesttype, req->value,
64 			req->index, buf, req->size, 1000);
65 
66 	dvb_usb_dbg_usb_control_msg(d->udev, 0, requesttype, req->value,
67 			req->index, buf, req->size);
68 
69 	if (ret > 0)
70 		ret = 0;
71 
72 	/* read request, copy returned data to return buf */
73 	if (!ret && requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
74 		memcpy(req->data, buf, req->size);
75 
76 	kfree(buf);
77 
78 	if (ret)
79 		goto err;
80 
81 	return ret;
82 err:
83 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
84 	return ret;
85 }
86 
87 static int rtl28xx_wr_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
88 {
89 	struct rtl28xxu_req req;
90 
91 	if (reg < 0x3000)
92 		req.index = CMD_USB_WR;
93 	else if (reg < 0x4000)
94 		req.index = CMD_SYS_WR;
95 	else
96 		req.index = CMD_IR_WR;
97 
98 	req.value = reg;
99 	req.size = len;
100 	req.data = val;
101 
102 	return rtl28xxu_ctrl_msg(d, &req);
103 }
104 
105 static int rtl2831_rd_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
106 {
107 	struct rtl28xxu_req req;
108 
109 	if (reg < 0x3000)
110 		req.index = CMD_USB_RD;
111 	else if (reg < 0x4000)
112 		req.index = CMD_SYS_RD;
113 	else
114 		req.index = CMD_IR_RD;
115 
116 	req.value = reg;
117 	req.size = len;
118 	req.data = val;
119 
120 	return rtl28xxu_ctrl_msg(d, &req);
121 }
122 
123 static int rtl28xx_wr_reg(struct dvb_usb_device *d, u16 reg, u8 val)
124 {
125 	return rtl28xx_wr_regs(d, reg, &val, 1);
126 }
127 
128 static int rtl28xx_rd_reg(struct dvb_usb_device *d, u16 reg, u8 *val)
129 {
130 	return rtl2831_rd_regs(d, reg, val, 1);
131 }
132 
133 static int rtl28xx_wr_reg_mask(struct dvb_usb_device *d, u16 reg, u8 val,
134 		u8 mask)
135 {
136 	int ret;
137 	u8 tmp;
138 
139 	/* no need for read if whole reg is written */
140 	if (mask != 0xff) {
141 		ret = rtl28xx_rd_reg(d, reg, &tmp);
142 		if (ret)
143 			return ret;
144 
145 		val &= mask;
146 		tmp &= ~mask;
147 		val |= tmp;
148 	}
149 
150 	return rtl28xx_wr_reg(d, reg, val);
151 }
152 
153 /* I2C */
154 static int rtl28xxu_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
155 	int num)
156 {
157 	int ret;
158 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
159 	struct rtl28xxu_priv *priv = d->priv;
160 	struct rtl28xxu_req req;
161 
162 	/*
163 	 * It is not known which are real I2C bus xfer limits, but testing
164 	 * with RTL2831U + MT2060 gives max RD 24 and max WR 22 bytes.
165 	 * TODO: find out RTL2832U lens
166 	 */
167 
168 	/*
169 	 * I2C adapter logic looks rather complicated due to fact it handles
170 	 * three different access methods. Those methods are;
171 	 * 1) integrated demod access
172 	 * 2) old I2C access
173 	 * 3) new I2C access
174 	 *
175 	 * Used method is selected in order 1, 2, 3. Method 3 can handle all
176 	 * requests but there is two reasons why not use it always;
177 	 * 1) It is most expensive, usually two USB messages are needed
178 	 * 2) At least RTL2831U does not support it
179 	 *
180 	 * Method 3 is needed in case of I2C write+read (typical register read)
181 	 * where write is more than one byte.
182 	 */
183 
184 	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
185 		return -EAGAIN;
186 
187 	if (num == 2 && !(msg[0].flags & I2C_M_RD) &&
188 		(msg[1].flags & I2C_M_RD)) {
189 		if (msg[0].len > 24 || msg[1].len > 24) {
190 			/* TODO: check msg[0].len max */
191 			ret = -EOPNOTSUPP;
192 			goto err_mutex_unlock;
193 		} else if (msg[0].addr == 0x10) {
194 			/* method 1 - integrated demod */
195 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
196 			req.index = CMD_DEMOD_RD | priv->page;
197 			req.size = msg[1].len;
198 			req.data = &msg[1].buf[0];
199 			ret = rtl28xxu_ctrl_msg(d, &req);
200 		} else if (msg[0].len < 2) {
201 			/* method 2 - old I2C */
202 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
203 			req.index = CMD_I2C_RD;
204 			req.size = msg[1].len;
205 			req.data = &msg[1].buf[0];
206 			ret = rtl28xxu_ctrl_msg(d, &req);
207 		} else {
208 			/* method 3 - new I2C */
209 			req.value = (msg[0].addr << 1);
210 			req.index = CMD_I2C_DA_WR;
211 			req.size = msg[0].len;
212 			req.data = msg[0].buf;
213 			ret = rtl28xxu_ctrl_msg(d, &req);
214 			if (ret)
215 				goto err_mutex_unlock;
216 
217 			req.value = (msg[0].addr << 1);
218 			req.index = CMD_I2C_DA_RD;
219 			req.size = msg[1].len;
220 			req.data = msg[1].buf;
221 			ret = rtl28xxu_ctrl_msg(d, &req);
222 		}
223 	} else if (num == 1 && !(msg[0].flags & I2C_M_RD)) {
224 		if (msg[0].len > 22) {
225 			/* TODO: check msg[0].len max */
226 			ret = -EOPNOTSUPP;
227 			goto err_mutex_unlock;
228 		} else if (msg[0].addr == 0x10) {
229 			/* method 1 - integrated demod */
230 			if (msg[0].buf[0] == 0x00) {
231 				/* save demod page for later demod access */
232 				priv->page = msg[0].buf[1];
233 				ret = 0;
234 			} else {
235 				req.value = (msg[0].buf[0] << 8) |
236 					(msg[0].addr << 1);
237 				req.index = CMD_DEMOD_WR | priv->page;
238 				req.size = msg[0].len-1;
239 				req.data = &msg[0].buf[1];
240 				ret = rtl28xxu_ctrl_msg(d, &req);
241 			}
242 		} else if (msg[0].len < 23) {
243 			/* method 2 - old I2C */
244 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
245 			req.index = CMD_I2C_WR;
246 			req.size = msg[0].len-1;
247 			req.data = &msg[0].buf[1];
248 			ret = rtl28xxu_ctrl_msg(d, &req);
249 		} else {
250 			/* method 3 - new I2C */
251 			req.value = (msg[0].addr << 1);
252 			req.index = CMD_I2C_DA_WR;
253 			req.size = msg[0].len;
254 			req.data = msg[0].buf;
255 			ret = rtl28xxu_ctrl_msg(d, &req);
256 		}
257 	} else {
258 		ret = -EINVAL;
259 	}
260 
261 err_mutex_unlock:
262 	mutex_unlock(&d->i2c_mutex);
263 
264 	return ret ? ret : num;
265 }
266 
267 static u32 rtl28xxu_i2c_func(struct i2c_adapter *adapter)
268 {
269 	return I2C_FUNC_I2C;
270 }
271 
272 static struct i2c_algorithm rtl28xxu_i2c_algo = {
273 	.master_xfer   = rtl28xxu_i2c_xfer,
274 	.functionality = rtl28xxu_i2c_func,
275 };
276 
277 static int rtl2831u_read_config(struct dvb_usb_device *d)
278 {
279 	struct rtl28xxu_priv *priv = d_to_priv(d);
280 	int ret;
281 	u8 buf[1];
282 	/* open RTL2831U/RTL2830 I2C gate */
283 	struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x08"};
284 	/* tuner probes */
285 	struct rtl28xxu_req req_mt2060 = {0x00c0, CMD_I2C_RD, 1, buf};
286 	struct rtl28xxu_req req_qt1010 = {0x0fc4, CMD_I2C_RD, 1, buf};
287 
288 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
289 
290 	/*
291 	 * RTL2831U GPIOs
292 	 * =========================================================
293 	 * GPIO0 | tuner#0 | 0 off | 1 on  | MXL5005S (?)
294 	 * GPIO2 | LED     | 0 off | 1 on  |
295 	 * GPIO4 | tuner#1 | 0 on  | 1 off | MT2060
296 	 */
297 
298 	/* GPIO direction */
299 	ret = rtl28xx_wr_reg(d, SYS_GPIO_DIR, 0x0a);
300 	if (ret)
301 		goto err;
302 
303 	/* enable as output GPIO0, GPIO2, GPIO4 */
304 	ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_EN, 0x15);
305 	if (ret)
306 		goto err;
307 
308 	/*
309 	 * Probe used tuner. We need to know used tuner before demod attach
310 	 * since there is some demod params needed to set according to tuner.
311 	 */
312 
313 	/* demod needs some time to wake up */
314 	msleep(20);
315 
316 	priv->tuner_name = "NONE";
317 
318 	/* open demod I2C gate */
319 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
320 	if (ret)
321 		goto err;
322 
323 	/* check QT1010 ID(?) register; reg=0f val=2c */
324 	ret = rtl28xxu_ctrl_msg(d, &req_qt1010);
325 	if (ret == 0 && buf[0] == 0x2c) {
326 		priv->tuner = TUNER_RTL2830_QT1010;
327 		priv->tuner_name = "QT1010";
328 		goto found;
329 	}
330 
331 	/* open demod I2C gate */
332 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
333 	if (ret)
334 		goto err;
335 
336 	/* check MT2060 ID register; reg=00 val=63 */
337 	ret = rtl28xxu_ctrl_msg(d, &req_mt2060);
338 	if (ret == 0 && buf[0] == 0x63) {
339 		priv->tuner = TUNER_RTL2830_MT2060;
340 		priv->tuner_name = "MT2060";
341 		goto found;
342 	}
343 
344 	/* assume MXL5005S */
345 	priv->tuner = TUNER_RTL2830_MXL5005S;
346 	priv->tuner_name = "MXL5005S";
347 	goto found;
348 
349 found:
350 	dev_dbg(&d->udev->dev, "%s: tuner=%s\n", __func__, priv->tuner_name);
351 
352 	return 0;
353 err:
354 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
355 	return ret;
356 }
357 
358 static int rtl2832u_read_config(struct dvb_usb_device *d)
359 {
360 	struct rtl28xxu_priv *priv = d_to_priv(d);
361 	int ret;
362 	u8 buf[2];
363 	/* open RTL2832U/RTL2832 I2C gate */
364 	struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x18"};
365 	/* close RTL2832U/RTL2832 I2C gate */
366 	struct rtl28xxu_req req_gate_close = {0x0120, 0x0011, 0x0001, "\x10"};
367 	/* tuner probes */
368 	struct rtl28xxu_req req_fc0012 = {0x00c6, CMD_I2C_RD, 1, buf};
369 	struct rtl28xxu_req req_fc0013 = {0x00c6, CMD_I2C_RD, 1, buf};
370 	struct rtl28xxu_req req_mt2266 = {0x00c0, CMD_I2C_RD, 1, buf};
371 	struct rtl28xxu_req req_fc2580 = {0x01ac, CMD_I2C_RD, 1, buf};
372 	struct rtl28xxu_req req_mt2063 = {0x00c0, CMD_I2C_RD, 1, buf};
373 	struct rtl28xxu_req req_max3543 = {0x00c0, CMD_I2C_RD, 1, buf};
374 	struct rtl28xxu_req req_tua9001 = {0x7ec0, CMD_I2C_RD, 2, buf};
375 	struct rtl28xxu_req req_mxl5007t = {0xd9c0, CMD_I2C_RD, 1, buf};
376 	struct rtl28xxu_req req_e4000 = {0x02c8, CMD_I2C_RD, 1, buf};
377 	struct rtl28xxu_req req_tda18272 = {0x00c0, CMD_I2C_RD, 2, buf};
378 
379 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
380 
381 	/* enable GPIO3 and GPIO6 as output */
382 	ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x40);
383 	if (ret)
384 		goto err;
385 
386 	ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x48, 0x48);
387 	if (ret)
388 		goto err;
389 
390 	/*
391 	 * Probe used tuner. We need to know used tuner before demod attach
392 	 * since there is some demod params needed to set according to tuner.
393 	 */
394 
395 	/* open demod I2C gate */
396 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
397 	if (ret)
398 		goto err;
399 
400 	priv->tuner_name = "NONE";
401 
402 	/* check FC0012 ID register; reg=00 val=a1 */
403 	ret = rtl28xxu_ctrl_msg(d, &req_fc0012);
404 	if (ret == 0 && buf[0] == 0xa1) {
405 		priv->tuner = TUNER_RTL2832_FC0012;
406 		priv->tuner_name = "FC0012";
407 		goto found;
408 	}
409 
410 	/* check FC0013 ID register; reg=00 val=a3 */
411 	ret = rtl28xxu_ctrl_msg(d, &req_fc0013);
412 	if (ret == 0 && buf[0] == 0xa3) {
413 		priv->tuner = TUNER_RTL2832_FC0013;
414 		priv->tuner_name = "FC0013";
415 		goto found;
416 	}
417 
418 	/* check MT2266 ID register; reg=00 val=85 */
419 	ret = rtl28xxu_ctrl_msg(d, &req_mt2266);
420 	if (ret == 0 && buf[0] == 0x85) {
421 		priv->tuner = TUNER_RTL2832_MT2266;
422 		priv->tuner_name = "MT2266";
423 		goto found;
424 	}
425 
426 	/* check FC2580 ID register; reg=01 val=56 */
427 	ret = rtl28xxu_ctrl_msg(d, &req_fc2580);
428 	if (ret == 0 && buf[0] == 0x56) {
429 		priv->tuner = TUNER_RTL2832_FC2580;
430 		priv->tuner_name = "FC2580";
431 		goto found;
432 	}
433 
434 	/* check MT2063 ID register; reg=00 val=9e || 9c */
435 	ret = rtl28xxu_ctrl_msg(d, &req_mt2063);
436 	if (ret == 0 && (buf[0] == 0x9e || buf[0] == 0x9c)) {
437 		priv->tuner = TUNER_RTL2832_MT2063;
438 		priv->tuner_name = "MT2063";
439 		goto found;
440 	}
441 
442 	/* check MAX3543 ID register; reg=00 val=38 */
443 	ret = rtl28xxu_ctrl_msg(d, &req_max3543);
444 	if (ret == 0 && buf[0] == 0x38) {
445 		priv->tuner = TUNER_RTL2832_MAX3543;
446 		priv->tuner_name = "MAX3543";
447 		goto found;
448 	}
449 
450 	/* check TUA9001 ID register; reg=7e val=2328 */
451 	ret = rtl28xxu_ctrl_msg(d, &req_tua9001);
452 	if (ret == 0 && buf[0] == 0x23 && buf[1] == 0x28) {
453 		priv->tuner = TUNER_RTL2832_TUA9001;
454 		priv->tuner_name = "TUA9001";
455 		goto found;
456 	}
457 
458 	/* check MXL5007R ID register; reg=d9 val=14 */
459 	ret = rtl28xxu_ctrl_msg(d, &req_mxl5007t);
460 	if (ret == 0 && buf[0] == 0x14) {
461 		priv->tuner = TUNER_RTL2832_MXL5007T;
462 		priv->tuner_name = "MXL5007T";
463 		goto found;
464 	}
465 
466 	/* check E4000 ID register; reg=02 val=40 */
467 	ret = rtl28xxu_ctrl_msg(d, &req_e4000);
468 	if (ret == 0 && buf[0] == 0x40) {
469 		priv->tuner = TUNER_RTL2832_E4000;
470 		priv->tuner_name = "E4000";
471 		goto found;
472 	}
473 
474 	/* check TDA18272 ID register; reg=00 val=c760  */
475 	ret = rtl28xxu_ctrl_msg(d, &req_tda18272);
476 	if (ret == 0 && (buf[0] == 0xc7 || buf[1] == 0x60)) {
477 		priv->tuner = TUNER_RTL2832_TDA18272;
478 		priv->tuner_name = "TDA18272";
479 		goto found;
480 	}
481 
482 found:
483 	dev_dbg(&d->udev->dev, "%s: tuner=%s\n", __func__, priv->tuner_name);
484 
485 	/* close demod I2C gate */
486 	ret = rtl28xxu_ctrl_msg(d, &req_gate_close);
487 	if (ret < 0)
488 		goto err;
489 
490 	return 0;
491 err:
492 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
493 	return ret;
494 }
495 
496 static struct rtl2830_config rtl28xxu_rtl2830_mt2060_config = {
497 	.i2c_addr = 0x10, /* 0x20 */
498 	.xtal = 28800000,
499 	.ts_mode = 0,
500 	.spec_inv = 1,
501 	.vtop = 0x20,
502 	.krf = 0x04,
503 	.agc_targ_val = 0x2d,
504 
505 };
506 
507 static struct rtl2830_config rtl28xxu_rtl2830_qt1010_config = {
508 	.i2c_addr = 0x10, /* 0x20 */
509 	.xtal = 28800000,
510 	.ts_mode = 0,
511 	.spec_inv = 1,
512 	.vtop = 0x20,
513 	.krf = 0x04,
514 	.agc_targ_val = 0x2d,
515 };
516 
517 static struct rtl2830_config rtl28xxu_rtl2830_mxl5005s_config = {
518 	.i2c_addr = 0x10, /* 0x20 */
519 	.xtal = 28800000,
520 	.ts_mode = 0,
521 	.spec_inv = 0,
522 	.vtop = 0x3f,
523 	.krf = 0x04,
524 	.agc_targ_val = 0x3e,
525 };
526 
527 static int rtl2831u_frontend_attach(struct dvb_usb_adapter *adap)
528 {
529 	struct dvb_usb_device *d = adap_to_d(adap);
530 	struct rtl28xxu_priv *priv = d_to_priv(d);
531 	struct rtl2830_config *rtl2830_config;
532 	int ret;
533 
534 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
535 
536 	switch (priv->tuner) {
537 	case TUNER_RTL2830_QT1010:
538 		rtl2830_config = &rtl28xxu_rtl2830_qt1010_config;
539 		break;
540 	case TUNER_RTL2830_MT2060:
541 		rtl2830_config = &rtl28xxu_rtl2830_mt2060_config;
542 		break;
543 	case TUNER_RTL2830_MXL5005S:
544 		rtl2830_config = &rtl28xxu_rtl2830_mxl5005s_config;
545 		break;
546 	default:
547 		dev_err(&d->udev->dev, "%s: unknown tuner=%s\n",
548 				KBUILD_MODNAME, priv->tuner_name);
549 		ret = -ENODEV;
550 		goto err;
551 	}
552 
553 	/* attach demodulator */
554 	adap->fe[0] = dvb_attach(rtl2830_attach, rtl2830_config, &d->i2c_adap);
555 	if (!adap->fe[0]) {
556 		ret = -ENODEV;
557 		goto err;
558 	}
559 
560 	return 0;
561 err:
562 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
563 	return ret;
564 }
565 
566 static struct rtl2832_config rtl28xxu_rtl2832_fc0012_config = {
567 	.i2c_addr = 0x10, /* 0x20 */
568 	.xtal = 28800000,
569 	.if_dvbt = 0,
570 	.tuner = TUNER_RTL2832_FC0012
571 };
572 
573 static struct rtl2832_config rtl28xxu_rtl2832_fc0013_config = {
574 	.i2c_addr = 0x10, /* 0x20 */
575 	.xtal = 28800000,
576 	.if_dvbt = 0,
577 	.tuner = TUNER_RTL2832_FC0013
578 };
579 
580 static struct rtl2832_config rtl28xxu_rtl2832_tua9001_config = {
581 	.i2c_addr = 0x10, /* 0x20 */
582 	.xtal = 28800000,
583 	.tuner = TUNER_RTL2832_TUA9001,
584 };
585 
586 static struct rtl2832_config rtl28xxu_rtl2832_e4000_config = {
587 	.i2c_addr = 0x10, /* 0x20 */
588 	.xtal = 28800000,
589 	.tuner = TUNER_RTL2832_E4000,
590 };
591 
592 static int rtl2832u_fc0012_tuner_callback(struct dvb_usb_device *d,
593 		int cmd, int arg)
594 {
595 	int ret;
596 	u8 val;
597 
598 	dev_dbg(&d->udev->dev, "%s: cmd=%d arg=%d\n", __func__, cmd, arg);
599 
600 	switch (cmd) {
601 	case FC_FE_CALLBACK_VHF_ENABLE:
602 		/* set output values */
603 		ret = rtl28xx_rd_reg(d, SYS_GPIO_OUT_VAL, &val);
604 		if (ret)
605 			goto err;
606 
607 		if (arg)
608 			val &= 0xbf; /* set GPIO6 low */
609 		else
610 			val |= 0x40; /* set GPIO6 high */
611 
612 
613 		ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_VAL, val);
614 		if (ret)
615 			goto err;
616 		break;
617 	default:
618 		ret = -EINVAL;
619 		goto err;
620 	}
621 	return 0;
622 err:
623 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
624 	return ret;
625 }
626 
627 static int rtl2832u_tua9001_tuner_callback(struct dvb_usb_device *d,
628 		int cmd, int arg)
629 {
630 	int ret;
631 	u8 val;
632 
633 	dev_dbg(&d->udev->dev, "%s: cmd=%d arg=%d\n", __func__, cmd, arg);
634 
635 	/*
636 	 * CEN     always enabled by hardware wiring
637 	 * RESETN  GPIO4
638 	 * RXEN    GPIO1
639 	 */
640 
641 	switch (cmd) {
642 	case TUA9001_CMD_RESETN:
643 		if (arg)
644 			val = (1 << 4);
645 		else
646 			val = (0 << 4);
647 
648 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x10);
649 		if (ret)
650 			goto err;
651 		break;
652 	case TUA9001_CMD_RXEN:
653 		if (arg)
654 			val = (1 << 1);
655 		else
656 			val = (0 << 1);
657 
658 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x02);
659 		if (ret)
660 			goto err;
661 		break;
662 	}
663 
664 	return 0;
665 err:
666 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
667 	return ret;
668 }
669 
670 static int rtl2832u_tuner_callback(struct dvb_usb_device *d, int cmd, int arg)
671 {
672 	struct rtl28xxu_priv *priv = d->priv;
673 
674 	switch (priv->tuner) {
675 	case TUNER_RTL2832_FC0012:
676 		return rtl2832u_fc0012_tuner_callback(d, cmd, arg);
677 	case TUNER_RTL2832_TUA9001:
678 		return rtl2832u_tua9001_tuner_callback(d, cmd, arg);
679 	default:
680 		break;
681 	}
682 
683 	return 0;
684 }
685 
686 static int rtl2832u_frontend_callback(void *adapter_priv, int component,
687 		int cmd, int arg)
688 {
689 	struct i2c_adapter *adap = adapter_priv;
690 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
691 
692 	dev_dbg(&d->udev->dev, "%s: component=%d cmd=%d arg=%d\n",
693 			__func__, component, cmd, arg);
694 
695 	switch (component) {
696 	case DVB_FRONTEND_COMPONENT_TUNER:
697 		return rtl2832u_tuner_callback(d, cmd, arg);
698 	default:
699 		break;
700 	}
701 
702 	return 0;
703 }
704 
705 static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
706 {
707 	int ret;
708 	struct dvb_usb_device *d = adap_to_d(adap);
709 	struct rtl28xxu_priv *priv = d_to_priv(d);
710 	struct rtl2832_config *rtl2832_config;
711 
712 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
713 
714 	switch (priv->tuner) {
715 	case TUNER_RTL2832_FC0012:
716 		rtl2832_config = &rtl28xxu_rtl2832_fc0012_config;
717 		break;
718 	case TUNER_RTL2832_FC0013:
719 		rtl2832_config = &rtl28xxu_rtl2832_fc0013_config;
720 		break;
721 	case TUNER_RTL2832_FC2580:
722 		/* FIXME: do not abuse fc0012 settings */
723 		rtl2832_config = &rtl28xxu_rtl2832_fc0012_config;
724 		break;
725 	case TUNER_RTL2832_TUA9001:
726 		rtl2832_config = &rtl28xxu_rtl2832_tua9001_config;
727 		break;
728 	case TUNER_RTL2832_E4000:
729 		rtl2832_config = &rtl28xxu_rtl2832_e4000_config;
730 		break;
731 	default:
732 		dev_err(&d->udev->dev, "%s: unknown tuner=%s\n",
733 				KBUILD_MODNAME, priv->tuner_name);
734 		ret = -ENODEV;
735 		goto err;
736 	}
737 
738 	/* attach demodulator */
739 	adap->fe[0] = dvb_attach(rtl2832_attach, rtl2832_config, &d->i2c_adap);
740 	if (!adap->fe[0]) {
741 		ret = -ENODEV;
742 		goto err;
743 	}
744 
745 	/* set fe callback */
746 	adap->fe[0]->callback = rtl2832u_frontend_callback;
747 
748 	return 0;
749 err:
750 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
751 	return ret;
752 }
753 
754 static struct qt1010_config rtl28xxu_qt1010_config = {
755 	.i2c_address = 0x62, /* 0xc4 */
756 };
757 
758 static struct mt2060_config rtl28xxu_mt2060_config = {
759 	.i2c_address = 0x60, /* 0xc0 */
760 	.clock_out = 0,
761 };
762 
763 static struct mxl5005s_config rtl28xxu_mxl5005s_config = {
764 	.i2c_address     = 0x63, /* 0xc6 */
765 	.if_freq         = IF_FREQ_4570000HZ,
766 	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
767 	.agc_mode        = MXL_SINGLE_AGC,
768 	.tracking_filter = MXL_TF_C_H,
769 	.rssi_enable     = MXL_RSSI_ENABLE,
770 	.cap_select      = MXL_CAP_SEL_ENABLE,
771 	.div_out         = MXL_DIV_OUT_4,
772 	.clock_out       = MXL_CLOCK_OUT_DISABLE,
773 	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
774 	.top		 = MXL5005S_TOP_25P2,
775 	.mod_mode        = MXL_DIGITAL_MODE,
776 	.if_mode         = MXL_ZERO_IF,
777 	.AgcMasterByte   = 0x00,
778 };
779 
780 static int rtl2831u_tuner_attach(struct dvb_usb_adapter *adap)
781 {
782 	int ret;
783 	struct dvb_usb_device *d = adap_to_d(adap);
784 	struct rtl28xxu_priv *priv = d_to_priv(d);
785 	struct i2c_adapter *rtl2830_tuner_i2c;
786 	struct dvb_frontend *fe;
787 
788 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
789 
790 	/* use rtl2830 driver I2C adapter, for more info see rtl2830 driver */
791 	rtl2830_tuner_i2c = rtl2830_get_tuner_i2c_adapter(adap->fe[0]);
792 
793 	switch (priv->tuner) {
794 	case TUNER_RTL2830_QT1010:
795 		fe = dvb_attach(qt1010_attach, adap->fe[0],
796 				rtl2830_tuner_i2c, &rtl28xxu_qt1010_config);
797 		break;
798 	case TUNER_RTL2830_MT2060:
799 		fe = dvb_attach(mt2060_attach, adap->fe[0],
800 				rtl2830_tuner_i2c, &rtl28xxu_mt2060_config,
801 				1220);
802 		break;
803 	case TUNER_RTL2830_MXL5005S:
804 		fe = dvb_attach(mxl5005s_attach, adap->fe[0],
805 				rtl2830_tuner_i2c, &rtl28xxu_mxl5005s_config);
806 		break;
807 	default:
808 		fe = NULL;
809 		dev_err(&d->udev->dev, "%s: unknown tuner=%d\n", KBUILD_MODNAME,
810 				priv->tuner);
811 	}
812 
813 	if (fe == NULL) {
814 		ret = -ENODEV;
815 		goto err;
816 	}
817 
818 	return 0;
819 err:
820 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
821 	return ret;
822 }
823 
824 static const struct e4000_config rtl2832u_e4000_config = {
825 	.i2c_addr = 0x64,
826 	.clock = 28800000,
827 };
828 
829 static const struct fc2580_config rtl2832u_fc2580_config = {
830 	.i2c_addr = 0x56,
831 	.clock = 16384000,
832 };
833 
834 static struct tua9001_config rtl2832u_tua9001_config = {
835 	.i2c_addr = 0x60,
836 };
837 
838 static int rtl2832u_tuner_attach(struct dvb_usb_adapter *adap)
839 {
840 	int ret;
841 	struct dvb_usb_device *d = adap_to_d(adap);
842 	struct rtl28xxu_priv *priv = d_to_priv(d);
843 	struct dvb_frontend *fe;
844 
845 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
846 
847 	switch (priv->tuner) {
848 	case TUNER_RTL2832_FC0012:
849 		fe = dvb_attach(fc0012_attach, adap->fe[0],
850 			&d->i2c_adap, 0xc6>>1, 0, FC_XTAL_28_8_MHZ);
851 
852 		/* since fc0012 includs reading the signal strength delegate
853 		 * that to the tuner driver */
854 		adap->fe[0]->ops.read_signal_strength =
855 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
856 		return 0;
857 		break;
858 	case TUNER_RTL2832_FC0013:
859 		fe = dvb_attach(fc0013_attach, adap->fe[0],
860 			&d->i2c_adap, 0xc6>>1, 0, FC_XTAL_28_8_MHZ);
861 
862 		/* fc0013 also supports signal strength reading */
863 		adap->fe[0]->ops.read_signal_strength =
864 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
865 		return 0;
866 	case TUNER_RTL2832_E4000:
867 		fe = dvb_attach(e4000_attach, adap->fe[0], &d->i2c_adap,
868 				&rtl2832u_e4000_config);
869 		break;
870 	case TUNER_RTL2832_FC2580:
871 		fe = dvb_attach(fc2580_attach, adap->fe[0], &d->i2c_adap,
872 				&rtl2832u_fc2580_config);
873 		break;
874 	case TUNER_RTL2832_TUA9001:
875 		/* enable GPIO1 and GPIO4 as output */
876 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x12);
877 		if (ret)
878 			goto err;
879 
880 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x12, 0x12);
881 		if (ret)
882 			goto err;
883 
884 		fe = dvb_attach(tua9001_attach, adap->fe[0], &d->i2c_adap,
885 				&rtl2832u_tua9001_config);
886 		break;
887 	default:
888 		fe = NULL;
889 		dev_err(&d->udev->dev, "%s: unknown tuner=%d\n", KBUILD_MODNAME,
890 				priv->tuner);
891 	}
892 
893 	if (fe == NULL) {
894 		ret = -ENODEV;
895 		goto err;
896 	}
897 
898 	return 0;
899 err:
900 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
901 	return ret;
902 }
903 
904 static int rtl28xxu_init(struct dvb_usb_device *d)
905 {
906 	int ret;
907 	u8 val;
908 
909 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
910 
911 	/* init USB endpoints */
912 	ret = rtl28xx_rd_reg(d, USB_SYSCTL_0, &val);
913 	if (ret)
914 		goto err;
915 
916 	/* enable DMA and Full Packet Mode*/
917 	val |= 0x09;
918 	ret = rtl28xx_wr_reg(d, USB_SYSCTL_0, val);
919 	if (ret)
920 		goto err;
921 
922 	/* set EPA maximum packet size to 0x0200 */
923 	ret = rtl28xx_wr_regs(d, USB_EPA_MAXPKT, "\x00\x02\x00\x00", 4);
924 	if (ret)
925 		goto err;
926 
927 	/* change EPA FIFO length */
928 	ret = rtl28xx_wr_regs(d, USB_EPA_FIFO_CFG, "\x14\x00\x00\x00", 4);
929 	if (ret)
930 		goto err;
931 
932 	return ret;
933 err:
934 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
935 	return ret;
936 }
937 
938 static int rtl2831u_power_ctrl(struct dvb_usb_device *d, int onoff)
939 {
940 	int ret;
941 	u8 gpio, sys0, epa_ctl[2];
942 
943 	dev_dbg(&d->udev->dev, "%s: onoff=%d\n", __func__, onoff);
944 
945 	/* demod adc */
946 	ret = rtl28xx_rd_reg(d, SYS_SYS0, &sys0);
947 	if (ret)
948 		goto err;
949 
950 	/* tuner power, read GPIOs */
951 	ret = rtl28xx_rd_reg(d, SYS_GPIO_OUT_VAL, &gpio);
952 	if (ret)
953 		goto err;
954 
955 	dev_dbg(&d->udev->dev, "%s: RD SYS0=%02x GPIO_OUT_VAL=%02x\n", __func__,
956 			sys0, gpio);
957 
958 	if (onoff) {
959 		gpio |= 0x01; /* GPIO0 = 1 */
960 		gpio &= (~0x10); /* GPIO4 = 0 */
961 		gpio |= 0x04; /* GPIO2 = 1, LED on */
962 		sys0 = sys0 & 0x0f;
963 		sys0 |= 0xe0;
964 		epa_ctl[0] = 0x00; /* clear stall */
965 		epa_ctl[1] = 0x00; /* clear reset */
966 	} else {
967 		gpio &= (~0x01); /* GPIO0 = 0 */
968 		gpio |= 0x10; /* GPIO4 = 1 */
969 		gpio &= (~0x04); /* GPIO2 = 1, LED off */
970 		sys0 = sys0 & (~0xc0);
971 		epa_ctl[0] = 0x10; /* set stall */
972 		epa_ctl[1] = 0x02; /* set reset */
973 	}
974 
975 	dev_dbg(&d->udev->dev, "%s: WR SYS0=%02x GPIO_OUT_VAL=%02x\n", __func__,
976 			sys0, gpio);
977 
978 	/* demod adc */
979 	ret = rtl28xx_wr_reg(d, SYS_SYS0, sys0);
980 	if (ret)
981 		goto err;
982 
983 	/* tuner power, write GPIOs */
984 	ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_VAL, gpio);
985 	if (ret)
986 		goto err;
987 
988 	/* streaming EP: stall & reset */
989 	ret = rtl28xx_wr_regs(d, USB_EPA_CTL, epa_ctl, 2);
990 	if (ret)
991 		goto err;
992 
993 	if (onoff)
994 		usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));
995 
996 	return ret;
997 err:
998 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
999 	return ret;
1000 }
1001 
1002 static int rtl2832u_power_ctrl(struct dvb_usb_device *d, int onoff)
1003 {
1004 	int ret;
1005 	u8 val;
1006 
1007 	dev_dbg(&d->udev->dev, "%s: onoff=%d\n", __func__, onoff);
1008 
1009 	if (onoff) {
1010 		/* set output values */
1011 		ret = rtl28xx_rd_reg(d, SYS_GPIO_OUT_VAL, &val);
1012 		if (ret)
1013 			goto err;
1014 
1015 		val |= 0x08;
1016 		val &= 0xef;
1017 
1018 		ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_VAL, val);
1019 		if (ret)
1020 			goto err;
1021 
1022 		/* demod_ctl_1 */
1023 		ret = rtl28xx_rd_reg(d, SYS_DEMOD_CTL1, &val);
1024 		if (ret)
1025 			goto err;
1026 
1027 		val &= 0xef;
1028 
1029 		ret = rtl28xx_wr_reg(d, SYS_DEMOD_CTL1, val);
1030 		if (ret)
1031 			goto err;
1032 
1033 		/* demod control */
1034 		/* PLL enable */
1035 		ret = rtl28xx_rd_reg(d, SYS_DEMOD_CTL, &val);
1036 		if (ret)
1037 			goto err;
1038 
1039 		/* bit 7 to 1 */
1040 		val |= 0x80;
1041 
1042 		ret = rtl28xx_wr_reg(d, SYS_DEMOD_CTL, val);
1043 		if (ret)
1044 			goto err;
1045 
1046 		ret = rtl28xx_rd_reg(d, SYS_DEMOD_CTL, &val);
1047 		if (ret)
1048 			goto err;
1049 
1050 		val |= 0x20;
1051 
1052 		ret = rtl28xx_wr_reg(d, SYS_DEMOD_CTL, val);
1053 		if (ret)
1054 			goto err;
1055 
1056 		mdelay(5);
1057 
1058 		/*enable ADC_Q and ADC_I */
1059 		ret = rtl28xx_rd_reg(d, SYS_DEMOD_CTL, &val);
1060 		if (ret)
1061 			goto err;
1062 
1063 		val |= 0x48;
1064 
1065 		ret = rtl28xx_wr_reg(d, SYS_DEMOD_CTL, val);
1066 		if (ret)
1067 			goto err;
1068 
1069 		/* streaming EP: clear stall & reset */
1070 		ret = rtl28xx_wr_regs(d, USB_EPA_CTL, "\x00\x00", 2);
1071 		if (ret)
1072 			goto err;
1073 
1074 		ret = usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));
1075 		if (ret)
1076 			goto err;
1077 	} else {
1078 		/* demod_ctl_1 */
1079 		ret = rtl28xx_rd_reg(d, SYS_DEMOD_CTL1, &val);
1080 		if (ret)
1081 			goto err;
1082 
1083 		val |= 0x0c;
1084 
1085 		ret = rtl28xx_wr_reg(d, SYS_DEMOD_CTL1, val);
1086 		if (ret)
1087 			goto err;
1088 
1089 		/* set output values */
1090 		ret = rtl28xx_rd_reg(d, SYS_GPIO_OUT_VAL, &val);
1091 		if (ret)
1092 				goto err;
1093 
1094 		val |= 0x10;
1095 
1096 		ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_VAL, val);
1097 		if (ret)
1098 			goto err;
1099 
1100 		/* demod control */
1101 		ret = rtl28xx_rd_reg(d, SYS_DEMOD_CTL, &val);
1102 		if (ret)
1103 			goto err;
1104 
1105 		val &= 0x37;
1106 
1107 		ret = rtl28xx_wr_reg(d, SYS_DEMOD_CTL, val);
1108 		if (ret)
1109 			goto err;
1110 
1111 		/* streaming EP: set stall & reset */
1112 		ret = rtl28xx_wr_regs(d, USB_EPA_CTL, "\x10\x02", 2);
1113 		if (ret)
1114 			goto err;
1115 	}
1116 
1117 	return ret;
1118 err:
1119 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1120 	return ret;
1121 }
1122 
1123 
1124 static int rtl2831u_rc_query(struct dvb_usb_device *d)
1125 {
1126 	int ret, i;
1127 	struct rtl28xxu_priv *priv = d->priv;
1128 	u8 buf[5];
1129 	u32 rc_code;
1130 	struct rtl28xxu_reg_val rc_nec_tab[] = {
1131 		{ 0x3033, 0x80 },
1132 		{ 0x3020, 0x43 },
1133 		{ 0x3021, 0x16 },
1134 		{ 0x3022, 0x16 },
1135 		{ 0x3023, 0x5a },
1136 		{ 0x3024, 0x2d },
1137 		{ 0x3025, 0x16 },
1138 		{ 0x3026, 0x01 },
1139 		{ 0x3028, 0xb0 },
1140 		{ 0x3029, 0x04 },
1141 		{ 0x302c, 0x88 },
1142 		{ 0x302e, 0x13 },
1143 		{ 0x3030, 0xdf },
1144 		{ 0x3031, 0x05 },
1145 	};
1146 
1147 	/* init remote controller */
1148 	if (!priv->rc_active) {
1149 		for (i = 0; i < ARRAY_SIZE(rc_nec_tab); i++) {
1150 			ret = rtl28xx_wr_reg(d, rc_nec_tab[i].reg,
1151 					rc_nec_tab[i].val);
1152 			if (ret)
1153 				goto err;
1154 		}
1155 		priv->rc_active = true;
1156 	}
1157 
1158 	ret = rtl2831_rd_regs(d, SYS_IRRC_RP, buf, 5);
1159 	if (ret)
1160 		goto err;
1161 
1162 	if (buf[4] & 0x01) {
1163 		if (buf[2] == (u8) ~buf[3]) {
1164 			if (buf[0] == (u8) ~buf[1]) {
1165 				/* NEC standard (16 bit) */
1166 				rc_code = buf[0] << 8 | buf[2];
1167 			} else {
1168 				/* NEC extended (24 bit) */
1169 				rc_code = buf[0] << 16 |
1170 						buf[1] << 8 | buf[2];
1171 			}
1172 		} else {
1173 			/* NEC full (32 bit) */
1174 			rc_code = buf[0] << 24 | buf[1] << 16 |
1175 					buf[2] << 8 | buf[3];
1176 		}
1177 
1178 		rc_keydown(d->rc_dev, rc_code, 0);
1179 
1180 		ret = rtl28xx_wr_reg(d, SYS_IRRC_SR, 1);
1181 		if (ret)
1182 			goto err;
1183 
1184 		/* repeated intentionally to avoid extra keypress */
1185 		ret = rtl28xx_wr_reg(d, SYS_IRRC_SR, 1);
1186 		if (ret)
1187 			goto err;
1188 	}
1189 
1190 	return ret;
1191 err:
1192 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1193 	return ret;
1194 }
1195 
1196 static int rtl2831u_get_rc_config(struct dvb_usb_device *d,
1197 		struct dvb_usb_rc *rc)
1198 {
1199 	rc->map_name = RC_MAP_EMPTY;
1200 	rc->allowed_protos = RC_BIT_NEC;
1201 	rc->query = rtl2831u_rc_query;
1202 	rc->interval = 400;
1203 
1204 	return 0;
1205 }
1206 
1207 static int rtl2832u_rc_query(struct dvb_usb_device *d)
1208 {
1209 	int ret, i;
1210 	struct rtl28xxu_priv *priv = d->priv;
1211 	u8 buf[128];
1212 	int len;
1213 	struct rtl28xxu_reg_val rc_nec_tab[] = {
1214 		{ IR_RX_CTRL,             0x20 },
1215 		{ IR_RX_BUF_CTRL,         0x80 },
1216 		{ IR_RX_IF,               0xff },
1217 		{ IR_RX_IE,               0xff },
1218 		{ IR_MAX_DURATION0,       0xd0 },
1219 		{ IR_MAX_DURATION1,       0x07 },
1220 		{ IR_IDLE_LEN0,           0xc0 },
1221 		{ IR_IDLE_LEN1,           0x00 },
1222 		{ IR_GLITCH_LEN,          0x03 },
1223 		{ IR_RX_CLK,              0x09 },
1224 		{ IR_RX_CFG,              0x1c },
1225 		{ IR_MAX_H_TOL_LEN,       0x1e },
1226 		{ IR_MAX_L_TOL_LEN,       0x1e },
1227 		{ IR_RX_CTRL,             0x80 },
1228 	};
1229 
1230 	/* init remote controller */
1231 	if (!priv->rc_active) {
1232 		for (i = 0; i < ARRAY_SIZE(rc_nec_tab); i++) {
1233 			ret = rtl28xx_wr_reg(d, rc_nec_tab[i].reg,
1234 					rc_nec_tab[i].val);
1235 			if (ret)
1236 				goto err;
1237 		}
1238 		priv->rc_active = true;
1239 	}
1240 
1241 	ret = rtl28xx_rd_reg(d, IR_RX_IF, &buf[0]);
1242 	if (ret)
1243 		goto err;
1244 
1245 	if (buf[0] != 0x83)
1246 		goto exit;
1247 
1248 	ret = rtl28xx_rd_reg(d, IR_RX_BC, &buf[0]);
1249 	if (ret)
1250 		goto err;
1251 
1252 	len = buf[0];
1253 	ret = rtl2831_rd_regs(d, IR_RX_BUF, buf, len);
1254 
1255 	/* TODO: pass raw IR to Kernel IR decoder */
1256 
1257 	ret = rtl28xx_wr_reg(d, IR_RX_IF, 0x03);
1258 	ret = rtl28xx_wr_reg(d, IR_RX_BUF_CTRL, 0x80);
1259 	ret = rtl28xx_wr_reg(d, IR_RX_CTRL, 0x80);
1260 
1261 exit:
1262 	return ret;
1263 err:
1264 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1265 	return ret;
1266 }
1267 
1268 static int rtl2832u_get_rc_config(struct dvb_usb_device *d,
1269 		struct dvb_usb_rc *rc)
1270 {
1271 	rc->map_name = RC_MAP_EMPTY;
1272 	rc->allowed_protos = RC_BIT_NEC;
1273 	rc->query = rtl2832u_rc_query;
1274 	rc->interval = 400;
1275 
1276 	return 0;
1277 }
1278 
1279 static const struct dvb_usb_device_properties rtl2831u_props = {
1280 	.driver_name = KBUILD_MODNAME,
1281 	.owner = THIS_MODULE,
1282 	.adapter_nr = adapter_nr,
1283 	.size_of_priv = sizeof(struct rtl28xxu_priv),
1284 
1285 	.power_ctrl = rtl2831u_power_ctrl,
1286 	.i2c_algo = &rtl28xxu_i2c_algo,
1287 	.read_config = rtl2831u_read_config,
1288 	.frontend_attach = rtl2831u_frontend_attach,
1289 	.tuner_attach = rtl2831u_tuner_attach,
1290 	.init = rtl28xxu_init,
1291 	.get_rc_config = rtl2831u_get_rc_config,
1292 
1293 	.num_adapters = 1,
1294 	.adapter = {
1295 		{
1296 			.stream = DVB_USB_STREAM_BULK(0x81, 6, 8 * 512),
1297 		},
1298 	},
1299 };
1300 
1301 static const struct dvb_usb_device_properties rtl2832u_props = {
1302 	.driver_name = KBUILD_MODNAME,
1303 	.owner = THIS_MODULE,
1304 	.adapter_nr = adapter_nr,
1305 	.size_of_priv = sizeof(struct rtl28xxu_priv),
1306 
1307 	.power_ctrl = rtl2832u_power_ctrl,
1308 	.i2c_algo = &rtl28xxu_i2c_algo,
1309 	.read_config = rtl2832u_read_config,
1310 	.frontend_attach = rtl2832u_frontend_attach,
1311 	.tuner_attach = rtl2832u_tuner_attach,
1312 	.init = rtl28xxu_init,
1313 	.get_rc_config = rtl2832u_get_rc_config,
1314 
1315 	.num_adapters = 1,
1316 	.adapter = {
1317 		{
1318 			.stream = DVB_USB_STREAM_BULK(0x81, 6, 8 * 512),
1319 		},
1320 	},
1321 };
1322 
1323 static const struct usb_device_id rtl28xxu_id_table[] = {
1324 	{ DVB_USB_DEVICE(USB_VID_REALTEK, USB_PID_REALTEK_RTL2831U,
1325 		&rtl2831u_props, "Realtek RTL2831U reference design", NULL) },
1326 	{ DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT,
1327 		&rtl2831u_props, "Freecom USB2.0 DVB-T", NULL) },
1328 	{ DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT_2,
1329 		&rtl2831u_props, "Freecom USB2.0 DVB-T", NULL) },
1330 
1331 	{ DVB_USB_DEVICE(USB_VID_REALTEK, 0x2832,
1332 		&rtl2832u_props, "Realtek RTL2832U reference design", NULL) },
1333 	{ DVB_USB_DEVICE(USB_VID_REALTEK, 0x2838,
1334 		&rtl2832u_props, "Realtek RTL2832U reference design", NULL) },
1335 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK_BLACK_REV1,
1336 		&rtl2832u_props, "Terratec Cinergy T Stick Black", NULL) },
1337 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_DELOCK_USB2_DVBT,
1338 		&rtl2832u_props, "G-Tek Electronics Group Lifeview LV5TDLX DVB-T", NULL) },
1339 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK,
1340 		&rtl2832u_props, "NOXON DAB/DAB+ USB dongle", NULL) },
1341 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK_REV2,
1342 		&rtl2832u_props, "NOXON DAB/DAB+ USB dongle (rev 2)", NULL) },
1343 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_TREKSTOR_TERRES_2_0,
1344 		&rtl2832u_props, "Trekstor DVB-T Stick Terres 2.0", NULL) },
1345 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1101,
1346 		&rtl2832u_props, "Dexatek DK DVB-T Dongle", NULL) },
1347 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6680,
1348 		&rtl2832u_props, "DigitalNow Quad DVB-T Receiver", NULL) },
1349 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d3,
1350 		&rtl2832u_props, "TerraTec Cinergy T Stick RC (Rev. 3)", NULL) },
1351 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1102,
1352 		&rtl2832u_props, "Dexatek DK mini DVB-T Dongle", NULL) },
1353 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d7,
1354 		&rtl2832u_props, "TerraTec Cinergy T Stick+", NULL) },
1355 	{ }
1356 };
1357 MODULE_DEVICE_TABLE(usb, rtl28xxu_id_table);
1358 
1359 static struct usb_driver rtl28xxu_usb_driver = {
1360 	.name = KBUILD_MODNAME,
1361 	.id_table = rtl28xxu_id_table,
1362 	.probe = dvb_usbv2_probe,
1363 	.disconnect = dvb_usbv2_disconnect,
1364 	.suspend = dvb_usbv2_suspend,
1365 	.resume = dvb_usbv2_resume,
1366 	.reset_resume = dvb_usbv2_reset_resume,
1367 	.no_dynamic_id = 1,
1368 	.soft_unbind = 1,
1369 };
1370 
1371 module_usb_driver(rtl28xxu_usb_driver);
1372 
1373 MODULE_DESCRIPTION("Realtek RTL28xxU DVB USB driver");
1374 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1375 MODULE_AUTHOR("Thomas Mair <thomas.mair86@googlemail.com>");
1376 MODULE_LICENSE("GPL");
1377