1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Realtek RTL28xxU DVB USB driver
4  *
5  * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
6  * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
7  * Copyright (C) 2012 Thomas Mair <thomas.mair86@googlemail.com>
8  */
9 
10 #include "rtl28xxu.h"
11 
12 static int rtl28xxu_disable_rc;
13 module_param_named(disable_rc, rtl28xxu_disable_rc, int, 0644);
14 MODULE_PARM_DESC(disable_rc, "disable RTL2832U remote controller");
15 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
16 
17 static int rtl28xxu_ctrl_msg(struct dvb_usb_device *d, struct rtl28xxu_req *req)
18 {
19 	struct rtl28xxu_dev *dev = d->priv;
20 	int ret;
21 	unsigned int pipe;
22 	u8 requesttype;
23 
24 	mutex_lock(&d->usb_mutex);
25 
26 	if (req->size > sizeof(dev->buf)) {
27 		dev_err(&d->intf->dev, "too large message %u\n", req->size);
28 		ret = -EINVAL;
29 		goto err_mutex_unlock;
30 	}
31 
32 	if (req->index & CMD_WR_FLAG) {
33 		/* write */
34 		memcpy(dev->buf, req->data, req->size);
35 		requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
36 		pipe = usb_sndctrlpipe(d->udev, 0);
37 	} else {
38 		/* read */
39 		requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
40 
41 		/*
42 		 * Zero-length transfers must use usb_sndctrlpipe() and
43 		 * rtl28xxu_identify_state() uses a zero-length i2c read
44 		 * command to determine the chip type.
45 		 */
46 		if (req->size)
47 			pipe = usb_rcvctrlpipe(d->udev, 0);
48 		else
49 			pipe = usb_sndctrlpipe(d->udev, 0);
50 	}
51 
52 	ret = usb_control_msg(d->udev, pipe, 0, requesttype, req->value,
53 			req->index, dev->buf, req->size, 1000);
54 	dvb_usb_dbg_usb_control_msg(d->udev, 0, requesttype, req->value,
55 			req->index, dev->buf, req->size);
56 	if (ret < 0)
57 		goto err_mutex_unlock;
58 
59 	/* read request, copy returned data to return buf */
60 	if (requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
61 		memcpy(req->data, dev->buf, req->size);
62 
63 	mutex_unlock(&d->usb_mutex);
64 
65 	return 0;
66 err_mutex_unlock:
67 	mutex_unlock(&d->usb_mutex);
68 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
69 	return ret;
70 }
71 
72 static int rtl28xxu_wr_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
73 {
74 	struct rtl28xxu_req req;
75 
76 	if (reg < 0x3000)
77 		req.index = CMD_USB_WR;
78 	else if (reg < 0x4000)
79 		req.index = CMD_SYS_WR;
80 	else
81 		req.index = CMD_IR_WR;
82 
83 	req.value = reg;
84 	req.size = len;
85 	req.data = val;
86 
87 	return rtl28xxu_ctrl_msg(d, &req);
88 }
89 
90 static int rtl28xxu_rd_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
91 {
92 	struct rtl28xxu_req req;
93 
94 	if (reg < 0x3000)
95 		req.index = CMD_USB_RD;
96 	else if (reg < 0x4000)
97 		req.index = CMD_SYS_RD;
98 	else
99 		req.index = CMD_IR_RD;
100 
101 	req.value = reg;
102 	req.size = len;
103 	req.data = val;
104 
105 	return rtl28xxu_ctrl_msg(d, &req);
106 }
107 
108 static int rtl28xxu_wr_reg(struct dvb_usb_device *d, u16 reg, u8 val)
109 {
110 	return rtl28xxu_wr_regs(d, reg, &val, 1);
111 }
112 
113 static int rtl28xxu_rd_reg(struct dvb_usb_device *d, u16 reg, u8 *val)
114 {
115 	return rtl28xxu_rd_regs(d, reg, val, 1);
116 }
117 
118 static int rtl28xxu_wr_reg_mask(struct dvb_usb_device *d, u16 reg, u8 val,
119 		u8 mask)
120 {
121 	int ret;
122 	u8 tmp;
123 
124 	/* no need for read if whole reg is written */
125 	if (mask != 0xff) {
126 		ret = rtl28xxu_rd_reg(d, reg, &tmp);
127 		if (ret)
128 			return ret;
129 
130 		val &= mask;
131 		tmp &= ~mask;
132 		val |= tmp;
133 	}
134 
135 	return rtl28xxu_wr_reg(d, reg, val);
136 }
137 
138 /* I2C */
139 static int rtl28xxu_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
140 	int num)
141 {
142 	int ret;
143 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
144 	struct rtl28xxu_dev *dev = d->priv;
145 	struct rtl28xxu_req req;
146 
147 	/*
148 	 * It is not known which are real I2C bus xfer limits, but testing
149 	 * with RTL2831U + MT2060 gives max RD 24 and max WR 22 bytes.
150 	 * TODO: find out RTL2832U lens
151 	 */
152 
153 	/*
154 	 * I2C adapter logic looks rather complicated due to fact it handles
155 	 * three different access methods. Those methods are;
156 	 * 1) integrated demod access
157 	 * 2) old I2C access
158 	 * 3) new I2C access
159 	 *
160 	 * Used method is selected in order 1, 2, 3. Method 3 can handle all
161 	 * requests but there is two reasons why not use it always;
162 	 * 1) It is most expensive, usually two USB messages are needed
163 	 * 2) At least RTL2831U does not support it
164 	 *
165 	 * Method 3 is needed in case of I2C write+read (typical register read)
166 	 * where write is more than one byte.
167 	 */
168 
169 	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
170 		return -EAGAIN;
171 
172 	if (num == 2 && !(msg[0].flags & I2C_M_RD) &&
173 		(msg[1].flags & I2C_M_RD)) {
174 		if (msg[0].len > 24 || msg[1].len > 24) {
175 			/* TODO: check msg[0].len max */
176 			ret = -EOPNOTSUPP;
177 			goto err_mutex_unlock;
178 		} else if (msg[0].addr == 0x10) {
179 			/* method 1 - integrated demod */
180 			if (msg[0].buf[0] == 0x00) {
181 				/* return demod page from driver cache */
182 				msg[1].buf[0] = dev->page;
183 				ret = 0;
184 			} else {
185 				req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
186 				req.index = CMD_DEMOD_RD | dev->page;
187 				req.size = msg[1].len;
188 				req.data = &msg[1].buf[0];
189 				ret = rtl28xxu_ctrl_msg(d, &req);
190 			}
191 		} else if (msg[0].len < 2) {
192 			/* method 2 - old I2C */
193 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
194 			req.index = CMD_I2C_RD;
195 			req.size = msg[1].len;
196 			req.data = &msg[1].buf[0];
197 			ret = rtl28xxu_ctrl_msg(d, &req);
198 		} else {
199 			/* method 3 - new I2C */
200 			req.value = (msg[0].addr << 1);
201 			req.index = CMD_I2C_DA_WR;
202 			req.size = msg[0].len;
203 			req.data = msg[0].buf;
204 			ret = rtl28xxu_ctrl_msg(d, &req);
205 			if (ret)
206 				goto err_mutex_unlock;
207 
208 			req.value = (msg[0].addr << 1);
209 			req.index = CMD_I2C_DA_RD;
210 			req.size = msg[1].len;
211 			req.data = msg[1].buf;
212 			ret = rtl28xxu_ctrl_msg(d, &req);
213 		}
214 	} else if (num == 1 && !(msg[0].flags & I2C_M_RD)) {
215 		if (msg[0].len > 22) {
216 			/* TODO: check msg[0].len max */
217 			ret = -EOPNOTSUPP;
218 			goto err_mutex_unlock;
219 		} else if (msg[0].addr == 0x10) {
220 			/* method 1 - integrated demod */
221 			if (msg[0].buf[0] == 0x00) {
222 				/* save demod page for later demod access */
223 				dev->page = msg[0].buf[1];
224 				ret = 0;
225 			} else {
226 				req.value = (msg[0].buf[0] << 8) |
227 					(msg[0].addr << 1);
228 				req.index = CMD_DEMOD_WR | dev->page;
229 				req.size = msg[0].len-1;
230 				req.data = &msg[0].buf[1];
231 				ret = rtl28xxu_ctrl_msg(d, &req);
232 			}
233 		} else if ((msg[0].len < 23) && (!dev->new_i2c_write)) {
234 			/* method 2 - old I2C */
235 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
236 			req.index = CMD_I2C_WR;
237 			req.size = msg[0].len-1;
238 			req.data = &msg[0].buf[1];
239 			ret = rtl28xxu_ctrl_msg(d, &req);
240 		} else {
241 			/* method 3 - new I2C */
242 			req.value = (msg[0].addr << 1);
243 			req.index = CMD_I2C_DA_WR;
244 			req.size = msg[0].len;
245 			req.data = msg[0].buf;
246 			ret = rtl28xxu_ctrl_msg(d, &req);
247 		}
248 	} else if (num == 1 && (msg[0].flags & I2C_M_RD)) {
249 		req.value = (msg[0].addr << 1);
250 		req.index = CMD_I2C_DA_RD;
251 		req.size = msg[0].len;
252 		req.data = msg[0].buf;
253 		ret = rtl28xxu_ctrl_msg(d, &req);
254 	} else {
255 		ret = -EOPNOTSUPP;
256 	}
257 
258 	/* Retry failed I2C messages */
259 	if (ret == -EPIPE)
260 		ret = -EAGAIN;
261 
262 err_mutex_unlock:
263 	mutex_unlock(&d->i2c_mutex);
264 
265 	return ret ? ret : num;
266 }
267 
268 static u32 rtl28xxu_i2c_func(struct i2c_adapter *adapter)
269 {
270 	return I2C_FUNC_I2C;
271 }
272 
273 static struct i2c_algorithm rtl28xxu_i2c_algo = {
274 	.master_xfer   = rtl28xxu_i2c_xfer,
275 	.functionality = rtl28xxu_i2c_func,
276 };
277 
278 static int rtl2831u_read_config(struct dvb_usb_device *d)
279 {
280 	struct rtl28xxu_dev *dev = d_to_priv(d);
281 	int ret;
282 	u8 buf[1];
283 	/* open RTL2831U/RTL2830 I2C gate */
284 	struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x08"};
285 	/* tuner probes */
286 	struct rtl28xxu_req req_mt2060 = {0x00c0, CMD_I2C_RD, 1, buf};
287 	struct rtl28xxu_req req_qt1010 = {0x0fc4, CMD_I2C_RD, 1, buf};
288 
289 	dev_dbg(&d->intf->dev, "\n");
290 
291 	/*
292 	 * RTL2831U GPIOs
293 	 * =========================================================
294 	 * GPIO0 | tuner#0 | 0 off | 1 on  | MXL5005S (?)
295 	 * GPIO2 | LED     | 0 off | 1 on  |
296 	 * GPIO4 | tuner#1 | 0 on  | 1 off | MT2060
297 	 */
298 
299 	/* GPIO direction */
300 	ret = rtl28xxu_wr_reg(d, SYS_GPIO_DIR, 0x0a);
301 	if (ret)
302 		goto err;
303 
304 	/* enable as output GPIO0, GPIO2, GPIO4 */
305 	ret = rtl28xxu_wr_reg(d, SYS_GPIO_OUT_EN, 0x15);
306 	if (ret)
307 		goto err;
308 
309 	/*
310 	 * Probe used tuner. We need to know used tuner before demod attach
311 	 * since there is some demod params needed to set according to tuner.
312 	 */
313 
314 	/* demod needs some time to wake up */
315 	msleep(20);
316 
317 	dev->tuner_name = "NONE";
318 
319 	/* open demod I2C gate */
320 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
321 	if (ret)
322 		goto err;
323 
324 	/* check QT1010 ID(?) register; reg=0f val=2c */
325 	ret = rtl28xxu_ctrl_msg(d, &req_qt1010);
326 	if (ret == 0 && buf[0] == 0x2c) {
327 		dev->tuner = TUNER_RTL2830_QT1010;
328 		dev->tuner_name = "QT1010";
329 		goto found;
330 	}
331 
332 	/* open demod I2C gate */
333 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
334 	if (ret)
335 		goto err;
336 
337 	/* check MT2060 ID register; reg=00 val=63 */
338 	ret = rtl28xxu_ctrl_msg(d, &req_mt2060);
339 	if (ret == 0 && buf[0] == 0x63) {
340 		dev->tuner = TUNER_RTL2830_MT2060;
341 		dev->tuner_name = "MT2060";
342 		goto found;
343 	}
344 
345 	/* assume MXL5005S */
346 	dev->tuner = TUNER_RTL2830_MXL5005S;
347 	dev->tuner_name = "MXL5005S";
348 	goto found;
349 
350 found:
351 	dev_dbg(&d->intf->dev, "tuner=%s\n", dev->tuner_name);
352 
353 	return 0;
354 err:
355 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
356 	return ret;
357 }
358 
359 static int rtl2832u_read_config(struct dvb_usb_device *d)
360 {
361 	struct rtl28xxu_dev *dev = d_to_priv(d);
362 	int ret;
363 	u8 buf[2];
364 	/* open RTL2832U/RTL2832 I2C gate */
365 	struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x18"};
366 	/* close RTL2832U/RTL2832 I2C gate */
367 	struct rtl28xxu_req req_gate_close = {0x0120, 0x0011, 0x0001, "\x10"};
368 	/* tuner probes */
369 	struct rtl28xxu_req req_fc0012 = {0x00c6, CMD_I2C_RD, 1, buf};
370 	struct rtl28xxu_req req_fc0013 = {0x00c6, CMD_I2C_RD, 1, buf};
371 	struct rtl28xxu_req req_mt2266 = {0x00c0, CMD_I2C_RD, 1, buf};
372 	struct rtl28xxu_req req_fc2580 = {0x01ac, CMD_I2C_RD, 1, buf};
373 	struct rtl28xxu_req req_mt2063 = {0x00c0, CMD_I2C_RD, 1, buf};
374 	struct rtl28xxu_req req_max3543 = {0x00c0, CMD_I2C_RD, 1, buf};
375 	struct rtl28xxu_req req_tua9001 = {0x7ec0, CMD_I2C_RD, 2, buf};
376 	struct rtl28xxu_req req_mxl5007t = {0xd9c0, CMD_I2C_RD, 1, buf};
377 	struct rtl28xxu_req req_e4000 = {0x02c8, CMD_I2C_RD, 1, buf};
378 	struct rtl28xxu_req req_tda18272 = {0x00c0, CMD_I2C_RD, 2, buf};
379 	struct rtl28xxu_req req_r820t = {0x0034, CMD_I2C_RD, 1, buf};
380 	struct rtl28xxu_req req_r828d = {0x0074, CMD_I2C_RD, 1, buf};
381 	struct rtl28xxu_req req_mn88472 = {0xff38, CMD_I2C_RD, 1, buf};
382 	struct rtl28xxu_req req_mn88473 = {0xff38, CMD_I2C_RD, 1, buf};
383 	struct rtl28xxu_req req_cxd2837er = {0xfdd8, CMD_I2C_RD, 1, buf};
384 	struct rtl28xxu_req req_si2157 = {0x00c0, CMD_I2C_RD, 1, buf};
385 	struct rtl28xxu_req req_si2168 = {0x00c8, CMD_I2C_RD, 1, buf};
386 
387 	dev_dbg(&d->intf->dev, "\n");
388 
389 	/* enable GPIO3 and GPIO6 as output */
390 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x40);
391 	if (ret)
392 		goto err;
393 
394 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x48, 0x48);
395 	if (ret)
396 		goto err;
397 
398 	/*
399 	 * Probe used tuner. We need to know used tuner before demod attach
400 	 * since there is some demod params needed to set according to tuner.
401 	 */
402 
403 	/* open demod I2C gate */
404 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
405 	if (ret)
406 		goto err;
407 
408 	dev->tuner_name = "NONE";
409 
410 	/* check FC0012 ID register; reg=00 val=a1 */
411 	ret = rtl28xxu_ctrl_msg(d, &req_fc0012);
412 	if (ret == 0 && buf[0] == 0xa1) {
413 		dev->tuner = TUNER_RTL2832_FC0012;
414 		dev->tuner_name = "FC0012";
415 		goto tuner_found;
416 	}
417 
418 	/* check FC0013 ID register; reg=00 val=a3 */
419 	ret = rtl28xxu_ctrl_msg(d, &req_fc0013);
420 	if (ret == 0 && buf[0] == 0xa3) {
421 		dev->tuner = TUNER_RTL2832_FC0013;
422 		dev->tuner_name = "FC0013";
423 		goto tuner_found;
424 	}
425 
426 	/* check MT2266 ID register; reg=00 val=85 */
427 	ret = rtl28xxu_ctrl_msg(d, &req_mt2266);
428 	if (ret == 0 && buf[0] == 0x85) {
429 		dev->tuner = TUNER_RTL2832_MT2266;
430 		dev->tuner_name = "MT2266";
431 		goto tuner_found;
432 	}
433 
434 	/* check FC2580 ID register; reg=01 val=56 */
435 	ret = rtl28xxu_ctrl_msg(d, &req_fc2580);
436 	if (ret == 0 && buf[0] == 0x56) {
437 		dev->tuner = TUNER_RTL2832_FC2580;
438 		dev->tuner_name = "FC2580";
439 		goto tuner_found;
440 	}
441 
442 	/* check MT2063 ID register; reg=00 val=9e || 9c */
443 	ret = rtl28xxu_ctrl_msg(d, &req_mt2063);
444 	if (ret == 0 && (buf[0] == 0x9e || buf[0] == 0x9c)) {
445 		dev->tuner = TUNER_RTL2832_MT2063;
446 		dev->tuner_name = "MT2063";
447 		goto tuner_found;
448 	}
449 
450 	/* check MAX3543 ID register; reg=00 val=38 */
451 	ret = rtl28xxu_ctrl_msg(d, &req_max3543);
452 	if (ret == 0 && buf[0] == 0x38) {
453 		dev->tuner = TUNER_RTL2832_MAX3543;
454 		dev->tuner_name = "MAX3543";
455 		goto tuner_found;
456 	}
457 
458 	/* check TUA9001 ID register; reg=7e val=2328 */
459 	ret = rtl28xxu_ctrl_msg(d, &req_tua9001);
460 	if (ret == 0 && buf[0] == 0x23 && buf[1] == 0x28) {
461 		dev->tuner = TUNER_RTL2832_TUA9001;
462 		dev->tuner_name = "TUA9001";
463 		goto tuner_found;
464 	}
465 
466 	/* check MXL5007R ID register; reg=d9 val=14 */
467 	ret = rtl28xxu_ctrl_msg(d, &req_mxl5007t);
468 	if (ret == 0 && buf[0] == 0x14) {
469 		dev->tuner = TUNER_RTL2832_MXL5007T;
470 		dev->tuner_name = "MXL5007T";
471 		goto tuner_found;
472 	}
473 
474 	/* check E4000 ID register; reg=02 val=40 */
475 	ret = rtl28xxu_ctrl_msg(d, &req_e4000);
476 	if (ret == 0 && buf[0] == 0x40) {
477 		dev->tuner = TUNER_RTL2832_E4000;
478 		dev->tuner_name = "E4000";
479 		goto tuner_found;
480 	}
481 
482 	/* check TDA18272 ID register; reg=00 val=c760  */
483 	ret = rtl28xxu_ctrl_msg(d, &req_tda18272);
484 	if (ret == 0 && (buf[0] == 0xc7 || buf[1] == 0x60)) {
485 		dev->tuner = TUNER_RTL2832_TDA18272;
486 		dev->tuner_name = "TDA18272";
487 		goto tuner_found;
488 	}
489 
490 	/* check R820T ID register; reg=00 val=69 */
491 	ret = rtl28xxu_ctrl_msg(d, &req_r820t);
492 	if (ret == 0 && buf[0] == 0x69) {
493 		dev->tuner = TUNER_RTL2832_R820T;
494 		dev->tuner_name = "R820T";
495 		goto tuner_found;
496 	}
497 
498 	/* check R828D ID register; reg=00 val=69 */
499 	ret = rtl28xxu_ctrl_msg(d, &req_r828d);
500 	if (ret == 0 && buf[0] == 0x69) {
501 		dev->tuner = TUNER_RTL2832_R828D;
502 		dev->tuner_name = "R828D";
503 		goto tuner_found;
504 	}
505 
506 	/* GPIO0 and GPIO5 to reset Si2157/Si2168 tuner and demod */
507 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x00, 0x21);
508 	if (ret)
509 		goto err;
510 
511 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x00, 0x21);
512 	if (ret)
513 		goto err;
514 
515 	msleep(50);
516 
517 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x21, 0x21);
518 	if (ret)
519 		goto err;
520 
521 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x21, 0x21);
522 	if (ret)
523 		goto err;
524 
525 	msleep(50);
526 
527 	/* check Si2157 ID register; reg=c0 val=80 */
528 	ret = rtl28xxu_ctrl_msg(d, &req_si2157);
529 	if (ret == 0 && ((buf[0] & 0x80) == 0x80)) {
530 		dev->tuner = TUNER_RTL2832_SI2157;
531 		dev->tuner_name = "SI2157";
532 		goto tuner_found;
533 	}
534 
535 tuner_found:
536 	dev_dbg(&d->intf->dev, "tuner=%s\n", dev->tuner_name);
537 
538 	/* probe slave demod */
539 	if (dev->tuner == TUNER_RTL2832_R828D) {
540 		/* power off slave demod on GPIO0 to reset CXD2837ER */
541 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x00, 0x01);
542 		if (ret)
543 			goto err;
544 
545 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x00, 0x01);
546 		if (ret)
547 			goto err;
548 
549 		msleep(50);
550 
551 		/* power on slave demod on GPIO0 */
552 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x01, 0x01);
553 		if (ret)
554 			goto err;
555 
556 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x01);
557 		if (ret)
558 			goto err;
559 
560 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x01, 0x01);
561 		if (ret)
562 			goto err;
563 
564 		/* slave demod needs some time to wake up */
565 		msleep(20);
566 
567 		/* check slave answers */
568 		ret = rtl28xxu_ctrl_msg(d, &req_mn88472);
569 		if (ret == 0 && buf[0] == 0x02) {
570 			dev_dbg(&d->intf->dev, "MN88472 found\n");
571 			dev->slave_demod = SLAVE_DEMOD_MN88472;
572 			goto demod_found;
573 		}
574 
575 		ret = rtl28xxu_ctrl_msg(d, &req_mn88473);
576 		if (ret == 0 && buf[0] == 0x03) {
577 			dev_dbg(&d->intf->dev, "MN88473 found\n");
578 			dev->slave_demod = SLAVE_DEMOD_MN88473;
579 			goto demod_found;
580 		}
581 
582 		ret = rtl28xxu_ctrl_msg(d, &req_cxd2837er);
583 		if (ret == 0 && buf[0] == 0xb1) {
584 			dev_dbg(&d->intf->dev, "CXD2837ER found\n");
585 			dev->slave_demod = SLAVE_DEMOD_CXD2837ER;
586 			goto demod_found;
587 		}
588 	}
589 	if (dev->tuner == TUNER_RTL2832_SI2157) {
590 		/* check Si2168 ID register; reg=c8 val=80 */
591 		ret = rtl28xxu_ctrl_msg(d, &req_si2168);
592 		if (ret == 0 && ((buf[0] & 0x80) == 0x80)) {
593 			dev_dbg(&d->intf->dev, "Si2168 found\n");
594 			dev->slave_demod = SLAVE_DEMOD_SI2168;
595 			goto demod_found;
596 		}
597 	}
598 
599 demod_found:
600 	/* close demod I2C gate */
601 	ret = rtl28xxu_ctrl_msg(d, &req_gate_close);
602 	if (ret < 0)
603 		goto err;
604 
605 	return 0;
606 err:
607 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
608 	return ret;
609 }
610 
611 static int rtl28xxu_read_config(struct dvb_usb_device *d)
612 {
613 	struct rtl28xxu_dev *dev = d_to_priv(d);
614 
615 	if (dev->chip_id == CHIP_ID_RTL2831U)
616 		return rtl2831u_read_config(d);
617 	else
618 		return rtl2832u_read_config(d);
619 }
620 
621 static int rtl28xxu_identify_state(struct dvb_usb_device *d, const char **name)
622 {
623 	struct rtl28xxu_dev *dev = d_to_priv(d);
624 	int ret;
625 	struct rtl28xxu_req req_demod_i2c = {0x0020, CMD_I2C_DA_RD, 0, NULL};
626 
627 	dev_dbg(&d->intf->dev, "\n");
628 
629 	/*
630 	 * Detect chip type using I2C command that is not supported
631 	 * by old RTL2831U.
632 	 */
633 	ret = rtl28xxu_ctrl_msg(d, &req_demod_i2c);
634 	if (ret == -EPIPE) {
635 		dev->chip_id = CHIP_ID_RTL2831U;
636 	} else if (ret == 0) {
637 		dev->chip_id = CHIP_ID_RTL2832U;
638 	} else {
639 		dev_err(&d->intf->dev, "chip type detection failed %d\n", ret);
640 		goto err;
641 	}
642 	dev_dbg(&d->intf->dev, "chip_id=%u\n", dev->chip_id);
643 
644 	/* Retry failed I2C messages */
645 	d->i2c_adap.retries = 3;
646 	d->i2c_adap.timeout = msecs_to_jiffies(10);
647 
648 	return WARM;
649 err:
650 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
651 	return ret;
652 }
653 
654 static const struct rtl2830_platform_data rtl2830_mt2060_platform_data = {
655 	.clk = 28800000,
656 	.spec_inv = 1,
657 	.vtop = 0x20,
658 	.krf = 0x04,
659 	.agc_targ_val = 0x2d,
660 
661 };
662 
663 static const struct rtl2830_platform_data rtl2830_qt1010_platform_data = {
664 	.clk = 28800000,
665 	.spec_inv = 1,
666 	.vtop = 0x20,
667 	.krf = 0x04,
668 	.agc_targ_val = 0x2d,
669 };
670 
671 static const struct rtl2830_platform_data rtl2830_mxl5005s_platform_data = {
672 	.clk = 28800000,
673 	.spec_inv = 0,
674 	.vtop = 0x3f,
675 	.krf = 0x04,
676 	.agc_targ_val = 0x3e,
677 };
678 
679 static int rtl2831u_frontend_attach(struct dvb_usb_adapter *adap)
680 {
681 	struct dvb_usb_device *d = adap_to_d(adap);
682 	struct rtl28xxu_dev *dev = d_to_priv(d);
683 	struct rtl2830_platform_data *pdata = &dev->rtl2830_platform_data;
684 	struct i2c_board_info board_info;
685 	struct i2c_client *client;
686 	int ret;
687 
688 	dev_dbg(&d->intf->dev, "\n");
689 
690 	switch (dev->tuner) {
691 	case TUNER_RTL2830_QT1010:
692 		*pdata = rtl2830_qt1010_platform_data;
693 		break;
694 	case TUNER_RTL2830_MT2060:
695 		*pdata = rtl2830_mt2060_platform_data;
696 		break;
697 	case TUNER_RTL2830_MXL5005S:
698 		*pdata = rtl2830_mxl5005s_platform_data;
699 		break;
700 	default:
701 		dev_err(&d->intf->dev, "unknown tuner %s\n", dev->tuner_name);
702 		ret = -ENODEV;
703 		goto err;
704 	}
705 
706 	/* attach demodulator */
707 	memset(&board_info, 0, sizeof(board_info));
708 	strscpy(board_info.type, "rtl2830", I2C_NAME_SIZE);
709 	board_info.addr = 0x10;
710 	board_info.platform_data = pdata;
711 	request_module("%s", board_info.type);
712 	client = i2c_new_client_device(&d->i2c_adap, &board_info);
713 	if (!i2c_client_has_driver(client)) {
714 		ret = -ENODEV;
715 		goto err;
716 	}
717 
718 	if (!try_module_get(client->dev.driver->owner)) {
719 		i2c_unregister_device(client);
720 		ret = -ENODEV;
721 		goto err;
722 	}
723 
724 	adap->fe[0] = pdata->get_dvb_frontend(client);
725 	dev->demod_i2c_adapter = pdata->get_i2c_adapter(client);
726 
727 	dev->i2c_client_demod = client;
728 
729 	return 0;
730 err:
731 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
732 	return ret;
733 }
734 
735 static const struct rtl2832_platform_data rtl2832_fc2580_platform_data = {
736 	.clk = 28800000,
737 	.tuner = TUNER_RTL2832_FC2580,
738 };
739 
740 static const struct rtl2832_platform_data rtl2832_fc0012_platform_data = {
741 	.clk = 28800000,
742 	.tuner = TUNER_RTL2832_FC0012
743 };
744 
745 static const struct rtl2832_platform_data rtl2832_fc0013_platform_data = {
746 	.clk = 28800000,
747 	.tuner = TUNER_RTL2832_FC0013
748 };
749 
750 static const struct rtl2832_platform_data rtl2832_tua9001_platform_data = {
751 	.clk = 28800000,
752 	.tuner = TUNER_RTL2832_TUA9001,
753 };
754 
755 static const struct rtl2832_platform_data rtl2832_e4000_platform_data = {
756 	.clk = 28800000,
757 	.tuner = TUNER_RTL2832_E4000,
758 };
759 
760 static const struct rtl2832_platform_data rtl2832_r820t_platform_data = {
761 	.clk = 28800000,
762 	.tuner = TUNER_RTL2832_R820T,
763 };
764 
765 static const struct rtl2832_platform_data rtl2832_si2157_platform_data = {
766 	.clk = 28800000,
767 	.tuner = TUNER_RTL2832_SI2157,
768 };
769 
770 static int rtl2832u_fc0012_tuner_callback(struct dvb_usb_device *d,
771 		int cmd, int arg)
772 {
773 	int ret;
774 	u8 val;
775 
776 	dev_dbg(&d->intf->dev, "cmd=%d arg=%d\n", cmd, arg);
777 
778 	switch (cmd) {
779 	case FC_FE_CALLBACK_VHF_ENABLE:
780 		/* set output values */
781 		ret = rtl28xxu_rd_reg(d, SYS_GPIO_OUT_VAL, &val);
782 		if (ret)
783 			goto err;
784 
785 		if (arg)
786 			val &= 0xbf; /* set GPIO6 low */
787 		else
788 			val |= 0x40; /* set GPIO6 high */
789 
790 
791 		ret = rtl28xxu_wr_reg(d, SYS_GPIO_OUT_VAL, val);
792 		if (ret)
793 			goto err;
794 		break;
795 	default:
796 		ret = -EINVAL;
797 		goto err;
798 	}
799 	return 0;
800 err:
801 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
802 	return ret;
803 }
804 
805 static int rtl2832u_tua9001_tuner_callback(struct dvb_usb_device *d,
806 		int cmd, int arg)
807 {
808 	int ret;
809 	u8 val;
810 
811 	dev_dbg(&d->intf->dev, "cmd=%d arg=%d\n", cmd, arg);
812 
813 	/*
814 	 * CEN     always enabled by hardware wiring
815 	 * RESETN  GPIO4
816 	 * RXEN    GPIO1
817 	 */
818 
819 	switch (cmd) {
820 	case TUA9001_CMD_RESETN:
821 		if (arg)
822 			val = (1 << 4);
823 		else
824 			val = (0 << 4);
825 
826 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x10);
827 		if (ret)
828 			goto err;
829 		break;
830 	case TUA9001_CMD_RXEN:
831 		if (arg)
832 			val = (1 << 1);
833 		else
834 			val = (0 << 1);
835 
836 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x02);
837 		if (ret)
838 			goto err;
839 		break;
840 	}
841 
842 	return 0;
843 err:
844 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
845 	return ret;
846 }
847 
848 static int rtl2832u_frontend_callback(void *adapter_priv, int component,
849 		int cmd, int arg)
850 {
851 	struct i2c_adapter *adapter = adapter_priv;
852 	struct device *parent = adapter->dev.parent;
853 	struct i2c_adapter *parent_adapter;
854 	struct dvb_usb_device *d;
855 	struct rtl28xxu_dev *dev;
856 
857 	/*
858 	 * All tuners are connected to demod muxed I2C adapter. We have to
859 	 * resolve its parent adapter in order to get handle for this driver
860 	 * private data. That is a bit hackish solution, GPIO or direct driver
861 	 * callback would be better...
862 	 */
863 	if (parent != NULL && parent->type == &i2c_adapter_type)
864 		parent_adapter = to_i2c_adapter(parent);
865 	else
866 		return -EINVAL;
867 
868 	d = i2c_get_adapdata(parent_adapter);
869 	dev = d->priv;
870 
871 	dev_dbg(&d->intf->dev, "component=%d cmd=%d arg=%d\n",
872 		component, cmd, arg);
873 
874 	switch (component) {
875 	case DVB_FRONTEND_COMPONENT_TUNER:
876 		switch (dev->tuner) {
877 		case TUNER_RTL2832_FC0012:
878 			return rtl2832u_fc0012_tuner_callback(d, cmd, arg);
879 		case TUNER_RTL2832_TUA9001:
880 			return rtl2832u_tua9001_tuner_callback(d, cmd, arg);
881 		}
882 	}
883 
884 	return 0;
885 }
886 
887 static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
888 {
889 	struct dvb_usb_device *d = adap_to_d(adap);
890 	struct rtl28xxu_dev *dev = d_to_priv(d);
891 	struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
892 	struct i2c_board_info board_info;
893 	struct i2c_client *client;
894 	int ret;
895 
896 	dev_dbg(&d->intf->dev, "\n");
897 
898 	switch (dev->tuner) {
899 	case TUNER_RTL2832_FC0012:
900 		*pdata = rtl2832_fc0012_platform_data;
901 		break;
902 	case TUNER_RTL2832_FC0013:
903 		*pdata = rtl2832_fc0013_platform_data;
904 		break;
905 	case TUNER_RTL2832_FC2580:
906 		*pdata = rtl2832_fc2580_platform_data;
907 		break;
908 	case TUNER_RTL2832_TUA9001:
909 		*pdata = rtl2832_tua9001_platform_data;
910 		break;
911 	case TUNER_RTL2832_E4000:
912 		*pdata = rtl2832_e4000_platform_data;
913 		break;
914 	case TUNER_RTL2832_R820T:
915 	case TUNER_RTL2832_R828D:
916 		*pdata = rtl2832_r820t_platform_data;
917 		break;
918 	case TUNER_RTL2832_SI2157:
919 		*pdata = rtl2832_si2157_platform_data;
920 		break;
921 	default:
922 		dev_err(&d->intf->dev, "unknown tuner %s\n", dev->tuner_name);
923 		ret = -ENODEV;
924 		goto err;
925 	}
926 
927 	/* attach demodulator */
928 	memset(&board_info, 0, sizeof(board_info));
929 	strscpy(board_info.type, "rtl2832", I2C_NAME_SIZE);
930 	board_info.addr = 0x10;
931 	board_info.platform_data = pdata;
932 	request_module("%s", board_info.type);
933 	client = i2c_new_client_device(&d->i2c_adap, &board_info);
934 	if (!i2c_client_has_driver(client)) {
935 		ret = -ENODEV;
936 		goto err;
937 	}
938 
939 	if (!try_module_get(client->dev.driver->owner)) {
940 		i2c_unregister_device(client);
941 		ret = -ENODEV;
942 		goto err;
943 	}
944 
945 	adap->fe[0] = pdata->get_dvb_frontend(client);
946 	dev->demod_i2c_adapter = pdata->get_i2c_adapter(client);
947 
948 	dev->i2c_client_demod = client;
949 
950 	/* set fe callback */
951 	adap->fe[0]->callback = rtl2832u_frontend_callback;
952 
953 	if (dev->slave_demod) {
954 		struct i2c_board_info info = {};
955 
956 		/* attach slave demodulator */
957 		if (dev->slave_demod == SLAVE_DEMOD_MN88472) {
958 			struct mn88472_config mn88472_config = {};
959 
960 			mn88472_config.fe = &adap->fe[1];
961 			mn88472_config.i2c_wr_max = 22;
962 			strscpy(info.type, "mn88472", I2C_NAME_SIZE);
963 			mn88472_config.xtal = 20500000;
964 			mn88472_config.ts_mode = SERIAL_TS_MODE;
965 			mn88472_config.ts_clock = VARIABLE_TS_CLOCK;
966 			info.addr = 0x18;
967 			info.platform_data = &mn88472_config;
968 			request_module(info.type);
969 			client = i2c_new_client_device(&d->i2c_adap, &info);
970 			if (!i2c_client_has_driver(client))
971 				goto err_slave_demod_failed;
972 
973 			if (!try_module_get(client->dev.driver->owner)) {
974 				i2c_unregister_device(client);
975 				goto err_slave_demod_failed;
976 			}
977 
978 			dev->i2c_client_slave_demod = client;
979 		} else if (dev->slave_demod == SLAVE_DEMOD_MN88473) {
980 			struct mn88473_config mn88473_config = {};
981 
982 			mn88473_config.fe = &adap->fe[1];
983 			mn88473_config.i2c_wr_max = 22;
984 			strscpy(info.type, "mn88473", I2C_NAME_SIZE);
985 			info.addr = 0x18;
986 			info.platform_data = &mn88473_config;
987 			request_module(info.type);
988 			client = i2c_new_client_device(&d->i2c_adap, &info);
989 			if (!i2c_client_has_driver(client))
990 				goto err_slave_demod_failed;
991 
992 			if (!try_module_get(client->dev.driver->owner)) {
993 				i2c_unregister_device(client);
994 				goto err_slave_demod_failed;
995 			}
996 
997 			dev->i2c_client_slave_demod = client;
998 		} else if (dev->slave_demod == SLAVE_DEMOD_CXD2837ER) {
999 			struct cxd2841er_config cxd2837er_config = {};
1000 
1001 			cxd2837er_config.i2c_addr = 0xd8;
1002 			cxd2837er_config.xtal = SONY_XTAL_20500;
1003 			cxd2837er_config.flags = (CXD2841ER_AUTO_IFHZ |
1004 				CXD2841ER_NO_AGCNEG | CXD2841ER_TSBITS |
1005 				CXD2841ER_EARLY_TUNE | CXD2841ER_TS_SERIAL);
1006 			adap->fe[1] = dvb_attach(cxd2841er_attach_t_c,
1007 						 &cxd2837er_config,
1008 						 &d->i2c_adap);
1009 			if (!adap->fe[1])
1010 				goto err_slave_demod_failed;
1011 			adap->fe[1]->id = 1;
1012 			dev->i2c_client_slave_demod = NULL;
1013 		} else {
1014 			struct si2168_config si2168_config = {};
1015 			struct i2c_adapter *adapter;
1016 
1017 			si2168_config.i2c_adapter = &adapter;
1018 			si2168_config.fe = &adap->fe[1];
1019 			si2168_config.ts_mode = SI2168_TS_SERIAL;
1020 			si2168_config.ts_clock_inv = false;
1021 			si2168_config.ts_clock_gapped = true;
1022 			strscpy(info.type, "si2168", I2C_NAME_SIZE);
1023 			info.addr = 0x64;
1024 			info.platform_data = &si2168_config;
1025 			request_module(info.type);
1026 			client = i2c_new_client_device(&d->i2c_adap, &info);
1027 			if (!i2c_client_has_driver(client))
1028 				goto err_slave_demod_failed;
1029 
1030 			if (!try_module_get(client->dev.driver->owner)) {
1031 				i2c_unregister_device(client);
1032 				goto err_slave_demod_failed;
1033 			}
1034 
1035 			dev->i2c_client_slave_demod = client;
1036 
1037 			/* for Si2168 devices use only new I2C write method */
1038 			dev->new_i2c_write = true;
1039 		}
1040 	}
1041 	return 0;
1042 
1043 err:
1044 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1045 	return ret;
1046 
1047 err_slave_demod_failed:
1048 	/*
1049 	 * We continue on reduced mode, without DVB-T2/C, using master
1050 	 * demod, when slave demod fails.
1051 	 */
1052 	dev->slave_demod = SLAVE_DEMOD_NONE;
1053 	return 0;
1054 }
1055 
1056 static int rtl28xxu_frontend_attach(struct dvb_usb_adapter *adap)
1057 {
1058 	struct rtl28xxu_dev *dev = adap_to_priv(adap);
1059 
1060 	if (dev->chip_id == CHIP_ID_RTL2831U)
1061 		return rtl2831u_frontend_attach(adap);
1062 	else
1063 		return rtl2832u_frontend_attach(adap);
1064 }
1065 
1066 static int rtl28xxu_frontend_detach(struct dvb_usb_adapter *adap)
1067 {
1068 	struct dvb_usb_device *d = adap_to_d(adap);
1069 	struct rtl28xxu_dev *dev = d_to_priv(d);
1070 	struct i2c_client *client;
1071 
1072 	dev_dbg(&d->intf->dev, "\n");
1073 
1074 	/* remove I2C slave demod */
1075 	client = dev->i2c_client_slave_demod;
1076 	if (client) {
1077 		module_put(client->dev.driver->owner);
1078 		i2c_unregister_device(client);
1079 	}
1080 
1081 	/* remove I2C demod */
1082 	client = dev->i2c_client_demod;
1083 	if (client) {
1084 		module_put(client->dev.driver->owner);
1085 		i2c_unregister_device(client);
1086 	}
1087 
1088 	return 0;
1089 }
1090 
1091 static struct qt1010_config rtl28xxu_qt1010_config = {
1092 	.i2c_address = 0x62, /* 0xc4 */
1093 };
1094 
1095 static struct mt2060_config rtl28xxu_mt2060_config = {
1096 	.i2c_address = 0x60, /* 0xc0 */
1097 	.clock_out = 0,
1098 };
1099 
1100 static struct mxl5005s_config rtl28xxu_mxl5005s_config = {
1101 	.i2c_address     = 0x63, /* 0xc6 */
1102 	.if_freq         = IF_FREQ_4570000HZ,
1103 	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
1104 	.agc_mode        = MXL_SINGLE_AGC,
1105 	.tracking_filter = MXL_TF_C_H,
1106 	.rssi_enable     = MXL_RSSI_ENABLE,
1107 	.cap_select      = MXL_CAP_SEL_ENABLE,
1108 	.div_out         = MXL_DIV_OUT_4,
1109 	.clock_out       = MXL_CLOCK_OUT_DISABLE,
1110 	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
1111 	.top		 = MXL5005S_TOP_25P2,
1112 	.mod_mode        = MXL_DIGITAL_MODE,
1113 	.if_mode         = MXL_ZERO_IF,
1114 	.AgcMasterByte   = 0x00,
1115 };
1116 
1117 static int rtl2831u_tuner_attach(struct dvb_usb_adapter *adap)
1118 {
1119 	int ret;
1120 	struct dvb_usb_device *d = adap_to_d(adap);
1121 	struct rtl28xxu_dev *dev = d_to_priv(d);
1122 	struct dvb_frontend *fe;
1123 
1124 	dev_dbg(&d->intf->dev, "\n");
1125 
1126 	switch (dev->tuner) {
1127 	case TUNER_RTL2830_QT1010:
1128 		fe = dvb_attach(qt1010_attach, adap->fe[0],
1129 				dev->demod_i2c_adapter,
1130 				&rtl28xxu_qt1010_config);
1131 		break;
1132 	case TUNER_RTL2830_MT2060:
1133 		fe = dvb_attach(mt2060_attach, adap->fe[0],
1134 				dev->demod_i2c_adapter,
1135 				&rtl28xxu_mt2060_config, 1220);
1136 		break;
1137 	case TUNER_RTL2830_MXL5005S:
1138 		fe = dvb_attach(mxl5005s_attach, adap->fe[0],
1139 				dev->demod_i2c_adapter,
1140 				&rtl28xxu_mxl5005s_config);
1141 		break;
1142 	default:
1143 		fe = NULL;
1144 		dev_err(&d->intf->dev, "unknown tuner %d\n", dev->tuner);
1145 	}
1146 
1147 	if (fe == NULL) {
1148 		ret = -ENODEV;
1149 		goto err;
1150 	}
1151 
1152 	return 0;
1153 err:
1154 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1155 	return ret;
1156 }
1157 
1158 static const struct fc0012_config rtl2832u_fc0012_config = {
1159 	.i2c_address = 0x63, /* 0xc6 >> 1 */
1160 	.xtal_freq = FC_XTAL_28_8_MHZ,
1161 };
1162 
1163 static const struct r820t_config rtl2832u_r820t_config = {
1164 	.i2c_addr = 0x1a,
1165 	.xtal = 28800000,
1166 	.max_i2c_msg_len = 2,
1167 	.rafael_chip = CHIP_R820T,
1168 };
1169 
1170 static const struct r820t_config rtl2832u_r828d_config = {
1171 	.i2c_addr = 0x3a,
1172 	.xtal = 16000000,
1173 	.max_i2c_msg_len = 2,
1174 	.rafael_chip = CHIP_R828D,
1175 };
1176 
1177 static int rtl2832u_tuner_attach(struct dvb_usb_adapter *adap)
1178 {
1179 	int ret;
1180 	struct dvb_usb_device *d = adap_to_d(adap);
1181 	struct rtl28xxu_dev *dev = d_to_priv(d);
1182 	struct dvb_frontend *fe = NULL;
1183 	struct i2c_board_info info;
1184 	struct i2c_client *client;
1185 	struct v4l2_subdev *subdev = NULL;
1186 	struct platform_device *pdev;
1187 	struct rtl2832_sdr_platform_data pdata;
1188 
1189 	dev_dbg(&d->intf->dev, "\n");
1190 
1191 	memset(&info, 0, sizeof(struct i2c_board_info));
1192 	memset(&pdata, 0, sizeof(pdata));
1193 
1194 	switch (dev->tuner) {
1195 	case TUNER_RTL2832_FC0012:
1196 		fe = dvb_attach(fc0012_attach, adap->fe[0],
1197 			dev->demod_i2c_adapter, &rtl2832u_fc0012_config);
1198 
1199 		/* since fc0012 includs reading the signal strength delegate
1200 		 * that to the tuner driver */
1201 		adap->fe[0]->ops.read_signal_strength =
1202 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1203 		break;
1204 	case TUNER_RTL2832_FC0013:
1205 		fe = dvb_attach(fc0013_attach, adap->fe[0],
1206 			dev->demod_i2c_adapter, 0xc6>>1, 0, FC_XTAL_28_8_MHZ);
1207 
1208 		/* fc0013 also supports signal strength reading */
1209 		adap->fe[0]->ops.read_signal_strength =
1210 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1211 		break;
1212 	case TUNER_RTL2832_E4000: {
1213 			struct e4000_config e4000_config = {
1214 				.fe = adap->fe[0],
1215 				.clock = 28800000,
1216 			};
1217 
1218 			strscpy(info.type, "e4000", I2C_NAME_SIZE);
1219 			info.addr = 0x64;
1220 			info.platform_data = &e4000_config;
1221 
1222 			request_module(info.type);
1223 			client = i2c_new_client_device(dev->demod_i2c_adapter,
1224 						       &info);
1225 			if (!i2c_client_has_driver(client))
1226 				break;
1227 
1228 			if (!try_module_get(client->dev.driver->owner)) {
1229 				i2c_unregister_device(client);
1230 				break;
1231 			}
1232 
1233 			dev->i2c_client_tuner = client;
1234 			subdev = i2c_get_clientdata(client);
1235 		}
1236 		break;
1237 	case TUNER_RTL2832_FC2580: {
1238 			struct fc2580_platform_data fc2580_pdata = {
1239 				.dvb_frontend = adap->fe[0],
1240 			};
1241 			struct i2c_board_info board_info = {};
1242 
1243 			strscpy(board_info.type, "fc2580", I2C_NAME_SIZE);
1244 			board_info.addr = 0x56;
1245 			board_info.platform_data = &fc2580_pdata;
1246 			request_module("fc2580");
1247 			client = i2c_new_client_device(dev->demod_i2c_adapter,
1248 						       &board_info);
1249 			if (!i2c_client_has_driver(client))
1250 				break;
1251 			if (!try_module_get(client->dev.driver->owner)) {
1252 				i2c_unregister_device(client);
1253 				break;
1254 			}
1255 			dev->i2c_client_tuner = client;
1256 			subdev = fc2580_pdata.get_v4l2_subdev(client);
1257 		}
1258 		break;
1259 	case TUNER_RTL2832_TUA9001: {
1260 		struct tua9001_platform_data tua9001_pdata = {
1261 			.dvb_frontend = adap->fe[0],
1262 		};
1263 		struct i2c_board_info board_info = {};
1264 
1265 		/* enable GPIO1 and GPIO4 as output */
1266 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x12);
1267 		if (ret)
1268 			goto err;
1269 
1270 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x12, 0x12);
1271 		if (ret)
1272 			goto err;
1273 
1274 		strscpy(board_info.type, "tua9001", I2C_NAME_SIZE);
1275 		board_info.addr = 0x60;
1276 		board_info.platform_data = &tua9001_pdata;
1277 		request_module("tua9001");
1278 		client = i2c_new_client_device(dev->demod_i2c_adapter,
1279 					       &board_info);
1280 		if (!i2c_client_has_driver(client))
1281 			break;
1282 		if (!try_module_get(client->dev.driver->owner)) {
1283 			i2c_unregister_device(client);
1284 			break;
1285 		}
1286 		dev->i2c_client_tuner = client;
1287 		break;
1288 	}
1289 	case TUNER_RTL2832_R820T:
1290 		fe = dvb_attach(r820t_attach, adap->fe[0],
1291 				dev->demod_i2c_adapter,
1292 				&rtl2832u_r820t_config);
1293 
1294 		/* Use tuner to get the signal strength */
1295 		adap->fe[0]->ops.read_signal_strength =
1296 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1297 		break;
1298 	case TUNER_RTL2832_R828D:
1299 		fe = dvb_attach(r820t_attach, adap->fe[0],
1300 				dev->demod_i2c_adapter,
1301 				&rtl2832u_r828d_config);
1302 		adap->fe[0]->ops.read_signal_strength =
1303 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1304 
1305 		if (adap->fe[1]) {
1306 			fe = dvb_attach(r820t_attach, adap->fe[1],
1307 					dev->demod_i2c_adapter,
1308 					&rtl2832u_r828d_config);
1309 			adap->fe[1]->ops.read_signal_strength =
1310 					adap->fe[1]->ops.tuner_ops.get_rf_strength;
1311 		}
1312 		break;
1313 	case TUNER_RTL2832_SI2157: {
1314 			struct si2157_config si2157_config = {
1315 				.fe = adap->fe[0],
1316 				.if_port = 0,
1317 				.inversion = false,
1318 			};
1319 
1320 			strscpy(info.type, "si2157", I2C_NAME_SIZE);
1321 			info.addr = 0x60;
1322 			info.platform_data = &si2157_config;
1323 			request_module(info.type);
1324 			client = i2c_new_client_device(&d->i2c_adap, &info);
1325 			if (!i2c_client_has_driver(client))
1326 				break;
1327 
1328 			if (!try_module_get(client->dev.driver->owner)) {
1329 				i2c_unregister_device(client);
1330 				break;
1331 			}
1332 
1333 			dev->i2c_client_tuner = client;
1334 			subdev = i2c_get_clientdata(client);
1335 
1336 			/* copy tuner ops for 2nd FE as tuner is shared */
1337 			if (adap->fe[1]) {
1338 				adap->fe[1]->tuner_priv =
1339 						adap->fe[0]->tuner_priv;
1340 				memcpy(&adap->fe[1]->ops.tuner_ops,
1341 						&adap->fe[0]->ops.tuner_ops,
1342 						sizeof(struct dvb_tuner_ops));
1343 			}
1344 		}
1345 		break;
1346 	default:
1347 		dev_err(&d->intf->dev, "unknown tuner %d\n", dev->tuner);
1348 	}
1349 	if (fe == NULL && dev->i2c_client_tuner == NULL) {
1350 		ret = -ENODEV;
1351 		goto err;
1352 	}
1353 
1354 	/* register SDR */
1355 	switch (dev->tuner) {
1356 	case TUNER_RTL2832_FC2580:
1357 	case TUNER_RTL2832_FC0012:
1358 	case TUNER_RTL2832_FC0013:
1359 	case TUNER_RTL2832_E4000:
1360 	case TUNER_RTL2832_R820T:
1361 	case TUNER_RTL2832_R828D:
1362 		pdata.clk = dev->rtl2832_platform_data.clk;
1363 		pdata.tuner = dev->tuner;
1364 		pdata.regmap = dev->rtl2832_platform_data.regmap;
1365 		pdata.dvb_frontend = adap->fe[0];
1366 		pdata.dvb_usb_device = d;
1367 		pdata.v4l2_subdev = subdev;
1368 
1369 		request_module("%s", "rtl2832_sdr");
1370 		pdev = platform_device_register_data(&d->intf->dev,
1371 						     "rtl2832_sdr",
1372 						     PLATFORM_DEVID_AUTO,
1373 						     &pdata, sizeof(pdata));
1374 		if (IS_ERR(pdev) || pdev->dev.driver == NULL)
1375 			break;
1376 		dev->platform_device_sdr = pdev;
1377 		break;
1378 	default:
1379 		dev_dbg(&d->intf->dev, "no SDR for tuner=%d\n", dev->tuner);
1380 	}
1381 
1382 	return 0;
1383 err:
1384 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1385 	return ret;
1386 }
1387 
1388 static int rtl28xxu_tuner_attach(struct dvb_usb_adapter *adap)
1389 {
1390 	struct rtl28xxu_dev *dev = adap_to_priv(adap);
1391 
1392 	if (dev->chip_id == CHIP_ID_RTL2831U)
1393 		return rtl2831u_tuner_attach(adap);
1394 	else
1395 		return rtl2832u_tuner_attach(adap);
1396 }
1397 
1398 static int rtl28xxu_tuner_detach(struct dvb_usb_adapter *adap)
1399 {
1400 	struct dvb_usb_device *d = adap_to_d(adap);
1401 	struct rtl28xxu_dev *dev = d_to_priv(d);
1402 	struct i2c_client *client;
1403 	struct platform_device *pdev;
1404 
1405 	dev_dbg(&d->intf->dev, "\n");
1406 
1407 	/* remove platform SDR */
1408 	pdev = dev->platform_device_sdr;
1409 	if (pdev)
1410 		platform_device_unregister(pdev);
1411 
1412 	/* remove I2C tuner */
1413 	client = dev->i2c_client_tuner;
1414 	if (client) {
1415 		module_put(client->dev.driver->owner);
1416 		i2c_unregister_device(client);
1417 	}
1418 
1419 	return 0;
1420 }
1421 
1422 static int rtl28xxu_init(struct dvb_usb_device *d)
1423 {
1424 	int ret;
1425 	u8 val;
1426 
1427 	dev_dbg(&d->intf->dev, "\n");
1428 
1429 	/* init USB endpoints */
1430 	ret = rtl28xxu_rd_reg(d, USB_SYSCTL_0, &val);
1431 	if (ret)
1432 		goto err;
1433 
1434 	/* enable DMA and Full Packet Mode*/
1435 	val |= 0x09;
1436 	ret = rtl28xxu_wr_reg(d, USB_SYSCTL_0, val);
1437 	if (ret)
1438 		goto err;
1439 
1440 	/* set EPA maximum packet size to 0x0200 */
1441 	ret = rtl28xxu_wr_regs(d, USB_EPA_MAXPKT, "\x00\x02\x00\x00", 4);
1442 	if (ret)
1443 		goto err;
1444 
1445 	/* change EPA FIFO length */
1446 	ret = rtl28xxu_wr_regs(d, USB_EPA_FIFO_CFG, "\x14\x00\x00\x00", 4);
1447 	if (ret)
1448 		goto err;
1449 
1450 	return ret;
1451 err:
1452 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1453 	return ret;
1454 }
1455 
1456 static int rtl2831u_power_ctrl(struct dvb_usb_device *d, int onoff)
1457 {
1458 	int ret;
1459 	u8 gpio, sys0, epa_ctl[2];
1460 
1461 	dev_dbg(&d->intf->dev, "onoff=%d\n", onoff);
1462 
1463 	/* demod adc */
1464 	ret = rtl28xxu_rd_reg(d, SYS_SYS0, &sys0);
1465 	if (ret)
1466 		goto err;
1467 
1468 	/* tuner power, read GPIOs */
1469 	ret = rtl28xxu_rd_reg(d, SYS_GPIO_OUT_VAL, &gpio);
1470 	if (ret)
1471 		goto err;
1472 
1473 	dev_dbg(&d->intf->dev, "RD SYS0=%02x GPIO_OUT_VAL=%02x\n", sys0, gpio);
1474 
1475 	if (onoff) {
1476 		gpio |= 0x01; /* GPIO0 = 1 */
1477 		gpio &= (~0x10); /* GPIO4 = 0 */
1478 		gpio |= 0x04; /* GPIO2 = 1, LED on */
1479 		sys0 = sys0 & 0x0f;
1480 		sys0 |= 0xe0;
1481 		epa_ctl[0] = 0x00; /* clear stall */
1482 		epa_ctl[1] = 0x00; /* clear reset */
1483 	} else {
1484 		gpio &= (~0x01); /* GPIO0 = 0 */
1485 		gpio |= 0x10; /* GPIO4 = 1 */
1486 		gpio &= (~0x04); /* GPIO2 = 1, LED off */
1487 		sys0 = sys0 & (~0xc0);
1488 		epa_ctl[0] = 0x10; /* set stall */
1489 		epa_ctl[1] = 0x02; /* set reset */
1490 	}
1491 
1492 	dev_dbg(&d->intf->dev, "WR SYS0=%02x GPIO_OUT_VAL=%02x\n", sys0, gpio);
1493 
1494 	/* demod adc */
1495 	ret = rtl28xxu_wr_reg(d, SYS_SYS0, sys0);
1496 	if (ret)
1497 		goto err;
1498 
1499 	/* tuner power, write GPIOs */
1500 	ret = rtl28xxu_wr_reg(d, SYS_GPIO_OUT_VAL, gpio);
1501 	if (ret)
1502 		goto err;
1503 
1504 	/* streaming EP: stall & reset */
1505 	ret = rtl28xxu_wr_regs(d, USB_EPA_CTL, epa_ctl, 2);
1506 	if (ret)
1507 		goto err;
1508 
1509 	if (onoff)
1510 		usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));
1511 
1512 	return ret;
1513 err:
1514 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1515 	return ret;
1516 }
1517 
1518 static int rtl2832u_power_ctrl(struct dvb_usb_device *d, int onoff)
1519 {
1520 	int ret;
1521 
1522 	dev_dbg(&d->intf->dev, "onoff=%d\n", onoff);
1523 
1524 	if (onoff) {
1525 		/* GPIO3=1, GPIO4=0 */
1526 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x08, 0x18);
1527 		if (ret)
1528 			goto err;
1529 
1530 		/* suspend? */
1531 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL1, 0x00, 0x10);
1532 		if (ret)
1533 			goto err;
1534 
1535 		/* enable PLL */
1536 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, 0x80, 0x80);
1537 		if (ret)
1538 			goto err;
1539 
1540 		/* disable reset */
1541 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, 0x20, 0x20);
1542 		if (ret)
1543 			goto err;
1544 
1545 		/* streaming EP: clear stall & reset */
1546 		ret = rtl28xxu_wr_regs(d, USB_EPA_CTL, "\x00\x00", 2);
1547 		if (ret)
1548 			goto err;
1549 
1550 		ret = usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));
1551 		if (ret)
1552 			goto err;
1553 	} else {
1554 		/* GPIO4=1 */
1555 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x10, 0x10);
1556 		if (ret)
1557 			goto err;
1558 
1559 		/* disable PLL */
1560 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, 0x00, 0x80);
1561 		if (ret)
1562 			goto err;
1563 
1564 		/* streaming EP: set stall & reset */
1565 		ret = rtl28xxu_wr_regs(d, USB_EPA_CTL, "\x10\x02", 2);
1566 		if (ret)
1567 			goto err;
1568 	}
1569 
1570 	return ret;
1571 err:
1572 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1573 	return ret;
1574 }
1575 
1576 static int rtl28xxu_power_ctrl(struct dvb_usb_device *d, int onoff)
1577 {
1578 	struct rtl28xxu_dev *dev = d_to_priv(d);
1579 
1580 	if (dev->chip_id == CHIP_ID_RTL2831U)
1581 		return rtl2831u_power_ctrl(d, onoff);
1582 	else
1583 		return rtl2832u_power_ctrl(d, onoff);
1584 }
1585 
1586 static int rtl28xxu_frontend_ctrl(struct dvb_frontend *fe, int onoff)
1587 {
1588 	struct dvb_usb_device *d = fe_to_d(fe);
1589 	struct rtl28xxu_dev *dev = fe_to_priv(fe);
1590 	struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
1591 	int ret;
1592 	u8 val;
1593 
1594 	dev_dbg(&d->intf->dev, "fe=%d onoff=%d\n", fe->id, onoff);
1595 
1596 	if (dev->chip_id == CHIP_ID_RTL2831U)
1597 		return 0;
1598 
1599 	if (fe->id == 0) {
1600 		/* control internal demod ADC */
1601 		if (onoff)
1602 			val = 0x48; /* enable ADC */
1603 		else
1604 			val = 0x00; /* disable ADC */
1605 
1606 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, val, 0x48);
1607 		if (ret)
1608 			goto err;
1609 	} else if (fe->id == 1) {
1610 		/* bypass slave demod TS through master demod */
1611 		ret = pdata->slave_ts_ctrl(dev->i2c_client_demod, onoff);
1612 		if (ret)
1613 			goto err;
1614 	}
1615 
1616 	return 0;
1617 err:
1618 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1619 	return ret;
1620 }
1621 
1622 #if IS_ENABLED(CONFIG_RC_CORE)
1623 static int rtl2831u_rc_query(struct dvb_usb_device *d)
1624 {
1625 	int ret, i;
1626 	struct rtl28xxu_dev *dev = d->priv;
1627 	u8 buf[5];
1628 	u32 rc_code;
1629 	static const struct rtl28xxu_reg_val rc_nec_tab[] = {
1630 		{ 0x3033, 0x80 },
1631 		{ 0x3020, 0x43 },
1632 		{ 0x3021, 0x16 },
1633 		{ 0x3022, 0x16 },
1634 		{ 0x3023, 0x5a },
1635 		{ 0x3024, 0x2d },
1636 		{ 0x3025, 0x16 },
1637 		{ 0x3026, 0x01 },
1638 		{ 0x3028, 0xb0 },
1639 		{ 0x3029, 0x04 },
1640 		{ 0x302c, 0x88 },
1641 		{ 0x302e, 0x13 },
1642 		{ 0x3030, 0xdf },
1643 		{ 0x3031, 0x05 },
1644 	};
1645 
1646 	/* init remote controller */
1647 	if (!dev->rc_active) {
1648 		for (i = 0; i < ARRAY_SIZE(rc_nec_tab); i++) {
1649 			ret = rtl28xxu_wr_reg(d, rc_nec_tab[i].reg,
1650 					rc_nec_tab[i].val);
1651 			if (ret)
1652 				goto err;
1653 		}
1654 		dev->rc_active = true;
1655 	}
1656 
1657 	ret = rtl28xxu_rd_regs(d, SYS_IRRC_RP, buf, 5);
1658 	if (ret)
1659 		goto err;
1660 
1661 	if (buf[4] & 0x01) {
1662 		enum rc_proto proto;
1663 
1664 		if (buf[2] == (u8) ~buf[3]) {
1665 			if (buf[0] == (u8) ~buf[1]) {
1666 				/* NEC standard (16 bit) */
1667 				rc_code = RC_SCANCODE_NEC(buf[0], buf[2]);
1668 				proto = RC_PROTO_NEC;
1669 			} else {
1670 				/* NEC extended (24 bit) */
1671 				rc_code = RC_SCANCODE_NECX(buf[0] << 8 | buf[1],
1672 							   buf[2]);
1673 				proto = RC_PROTO_NECX;
1674 			}
1675 		} else {
1676 			/* NEC full (32 bit) */
1677 			rc_code = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
1678 						    buf[2] << 8  | buf[3]);
1679 			proto = RC_PROTO_NEC32;
1680 		}
1681 
1682 		rc_keydown(d->rc_dev, proto, rc_code, 0);
1683 
1684 		ret = rtl28xxu_wr_reg(d, SYS_IRRC_SR, 1);
1685 		if (ret)
1686 			goto err;
1687 
1688 		/* repeated intentionally to avoid extra keypress */
1689 		ret = rtl28xxu_wr_reg(d, SYS_IRRC_SR, 1);
1690 		if (ret)
1691 			goto err;
1692 	}
1693 
1694 	return ret;
1695 err:
1696 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1697 	return ret;
1698 }
1699 
1700 static int rtl2831u_get_rc_config(struct dvb_usb_device *d,
1701 		struct dvb_usb_rc *rc)
1702 {
1703 	rc->map_name = RC_MAP_EMPTY;
1704 	rc->allowed_protos = RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX |
1705 							RC_PROTO_BIT_NEC32;
1706 	rc->query = rtl2831u_rc_query;
1707 	rc->interval = 400;
1708 
1709 	return 0;
1710 }
1711 
1712 static int rtl2832u_rc_query(struct dvb_usb_device *d)
1713 {
1714 	int ret, i, len;
1715 	struct rtl28xxu_dev *dev = d->priv;
1716 	struct ir_raw_event ev = {};
1717 	u8 buf[128];
1718 	static const struct rtl28xxu_reg_val_mask refresh_tab[] = {
1719 		{IR_RX_IF,               0x03, 0xff},
1720 		{IR_RX_BUF_CTRL,         0x80, 0xff},
1721 		{IR_RX_CTRL,             0x80, 0xff},
1722 	};
1723 
1724 	/* init remote controller */
1725 	if (!dev->rc_active) {
1726 		static const struct rtl28xxu_reg_val_mask init_tab[] = {
1727 			{SYS_DEMOD_CTL1,         0x00, 0x04},
1728 			{SYS_DEMOD_CTL1,         0x00, 0x08},
1729 			{USB_CTRL,               0x20, 0x20},
1730 			{SYS_GPIO_DIR,           0x00, 0x08},
1731 			{SYS_GPIO_OUT_EN,        0x08, 0x08},
1732 			{SYS_GPIO_OUT_VAL,       0x08, 0x08},
1733 			{IR_MAX_DURATION0,       0xd0, 0xff},
1734 			{IR_MAX_DURATION1,       0x07, 0xff},
1735 			{IR_IDLE_LEN0,           0xc0, 0xff},
1736 			{IR_IDLE_LEN1,           0x00, 0xff},
1737 			{IR_GLITCH_LEN,          0x03, 0xff},
1738 			{IR_RX_CLK,              0x09, 0xff},
1739 			{IR_RX_CFG,              0x1c, 0xff},
1740 			{IR_MAX_H_TOL_LEN,       0x1e, 0xff},
1741 			{IR_MAX_L_TOL_LEN,       0x1e, 0xff},
1742 			{IR_RX_CTRL,             0x80, 0xff},
1743 		};
1744 
1745 		for (i = 0; i < ARRAY_SIZE(init_tab); i++) {
1746 			ret = rtl28xxu_wr_reg_mask(d, init_tab[i].reg,
1747 					init_tab[i].val, init_tab[i].mask);
1748 			if (ret)
1749 				goto err;
1750 		}
1751 
1752 		dev->rc_active = true;
1753 	}
1754 
1755 	ret = rtl28xxu_rd_reg(d, IR_RX_IF, &buf[0]);
1756 	if (ret)
1757 		goto err;
1758 
1759 	if (buf[0] != 0x83)
1760 		goto exit;
1761 
1762 	ret = rtl28xxu_rd_reg(d, IR_RX_BC, &buf[0]);
1763 	if (ret || buf[0] > sizeof(buf))
1764 		goto err;
1765 
1766 	len = buf[0];
1767 
1768 	/* read raw code from hw */
1769 	ret = rtl28xxu_rd_regs(d, IR_RX_BUF, buf, len);
1770 	if (ret)
1771 		goto err;
1772 
1773 	/* let hw receive new code */
1774 	for (i = 0; i < ARRAY_SIZE(refresh_tab); i++) {
1775 		ret = rtl28xxu_wr_reg_mask(d, refresh_tab[i].reg,
1776 				refresh_tab[i].val, refresh_tab[i].mask);
1777 		if (ret)
1778 			goto err;
1779 	}
1780 
1781 	/* pass data to Kernel IR decoder */
1782 	for (i = 0; i < len; i++) {
1783 		ev.pulse = buf[i] >> 7;
1784 		ev.duration = 51 * (buf[i] & 0x7f);
1785 		ir_raw_event_store_with_filter(d->rc_dev, &ev);
1786 	}
1787 
1788 	/* 'flush' ir_raw_event_store_with_filter() */
1789 	ir_raw_event_handle(d->rc_dev);
1790 exit:
1791 	return ret;
1792 err:
1793 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1794 	return ret;
1795 }
1796 
1797 static int rtl2832u_get_rc_config(struct dvb_usb_device *d,
1798 		struct dvb_usb_rc *rc)
1799 {
1800 	/* disable IR interrupts in order to avoid SDR sample loss */
1801 	if (rtl28xxu_disable_rc)
1802 		return rtl28xxu_wr_reg(d, IR_RX_IE, 0x00);
1803 
1804 	/* load empty to enable rc */
1805 	if (!rc->map_name)
1806 		rc->map_name = RC_MAP_EMPTY;
1807 	rc->allowed_protos = RC_PROTO_BIT_ALL_IR_DECODER;
1808 	rc->driver_type = RC_DRIVER_IR_RAW;
1809 	rc->query = rtl2832u_rc_query;
1810 	rc->interval = 200;
1811 	/* we program idle len to 0xc0, set timeout to one less */
1812 	rc->timeout = 0xbf * 51;
1813 
1814 	return 0;
1815 }
1816 
1817 static int rtl28xxu_get_rc_config(struct dvb_usb_device *d,
1818 		struct dvb_usb_rc *rc)
1819 {
1820 	struct rtl28xxu_dev *dev = d_to_priv(d);
1821 
1822 	if (dev->chip_id == CHIP_ID_RTL2831U)
1823 		return rtl2831u_get_rc_config(d, rc);
1824 	else
1825 		return rtl2832u_get_rc_config(d, rc);
1826 }
1827 #else
1828 #define rtl28xxu_get_rc_config NULL
1829 #endif
1830 
1831 static int rtl28xxu_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
1832 {
1833 	struct rtl28xxu_dev *dev = adap_to_priv(adap);
1834 
1835 	if (dev->chip_id == CHIP_ID_RTL2831U) {
1836 		struct rtl2830_platform_data *pdata = &dev->rtl2830_platform_data;
1837 
1838 		return pdata->pid_filter_ctrl(adap->fe[0], onoff);
1839 	} else {
1840 		struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
1841 
1842 		return pdata->pid_filter_ctrl(adap->fe[0], onoff);
1843 	}
1844 }
1845 
1846 static int rtl28xxu_pid_filter(struct dvb_usb_adapter *adap, int index,
1847 			       u16 pid, int onoff)
1848 {
1849 	struct rtl28xxu_dev *dev = adap_to_priv(adap);
1850 
1851 	if (dev->chip_id == CHIP_ID_RTL2831U) {
1852 		struct rtl2830_platform_data *pdata = &dev->rtl2830_platform_data;
1853 
1854 		return pdata->pid_filter(adap->fe[0], index, pid, onoff);
1855 	} else {
1856 		struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
1857 
1858 		return pdata->pid_filter(adap->fe[0], index, pid, onoff);
1859 	}
1860 }
1861 
1862 static const struct dvb_usb_device_properties rtl28xxu_props = {
1863 	.driver_name = KBUILD_MODNAME,
1864 	.owner = THIS_MODULE,
1865 	.adapter_nr = adapter_nr,
1866 	.size_of_priv = sizeof(struct rtl28xxu_dev),
1867 
1868 	.identify_state = rtl28xxu_identify_state,
1869 	.power_ctrl = rtl28xxu_power_ctrl,
1870 	.frontend_ctrl = rtl28xxu_frontend_ctrl,
1871 	.i2c_algo = &rtl28xxu_i2c_algo,
1872 	.read_config = rtl28xxu_read_config,
1873 	.frontend_attach = rtl28xxu_frontend_attach,
1874 	.frontend_detach = rtl28xxu_frontend_detach,
1875 	.tuner_attach = rtl28xxu_tuner_attach,
1876 	.tuner_detach = rtl28xxu_tuner_detach,
1877 	.init = rtl28xxu_init,
1878 	.get_rc_config = rtl28xxu_get_rc_config,
1879 
1880 	.num_adapters = 1,
1881 	.adapter = {
1882 		{
1883 			.caps = DVB_USB_ADAP_HAS_PID_FILTER |
1884 				DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
1885 
1886 			.pid_filter_count = 32,
1887 			.pid_filter_ctrl = rtl28xxu_pid_filter_ctrl,
1888 			.pid_filter = rtl28xxu_pid_filter,
1889 
1890 			.stream = DVB_USB_STREAM_BULK(0x81, 6, 8 * 512),
1891 		},
1892 	},
1893 };
1894 
1895 static const struct usb_device_id rtl28xxu_id_table[] = {
1896 	/* RTL2831U devices: */
1897 	{ DVB_USB_DEVICE(USB_VID_REALTEK, USB_PID_REALTEK_RTL2831U,
1898 		&rtl28xxu_props, "Realtek RTL2831U reference design", NULL) },
1899 	{ DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT,
1900 		&rtl28xxu_props, "Freecom USB2.0 DVB-T", NULL) },
1901 	{ DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT_2,
1902 		&rtl28xxu_props, "Freecom USB2.0 DVB-T", NULL) },
1903 
1904 	/* RTL2832U devices: */
1905 	{ DVB_USB_DEVICE(USB_VID_REALTEK, 0x2832,
1906 		&rtl28xxu_props, "Realtek RTL2832U reference design", NULL) },
1907 	{ DVB_USB_DEVICE(USB_VID_REALTEK, 0x2838,
1908 		&rtl28xxu_props, "Realtek RTL2832U reference design", NULL) },
1909 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK_BLACK_REV1,
1910 		&rtl28xxu_props, "TerraTec Cinergy T Stick Black", RC_MAP_TERRATEC_SLIM) },
1911 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_DELOCK_USB2_DVBT,
1912 		&rtl28xxu_props, "G-Tek Electronics Group Lifeview LV5TDLX DVB-T", NULL) },
1913 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK,
1914 		&rtl28xxu_props, "TerraTec NOXON DAB Stick", NULL) },
1915 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK_REV2,
1916 		&rtl28xxu_props, "TerraTec NOXON DAB Stick (rev 2)", NULL) },
1917 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK_REV3,
1918 		&rtl28xxu_props, "TerraTec NOXON DAB Stick (rev 3)", NULL) },
1919 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_TREKSTOR_TERRES_2_0,
1920 		&rtl28xxu_props, "Trekstor DVB-T Stick Terres 2.0", NULL) },
1921 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1101,
1922 		&rtl28xxu_props, "Dexatek DK DVB-T Dongle", NULL) },
1923 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6680,
1924 		&rtl28xxu_props, "DigitalNow Quad DVB-T Receiver", NULL) },
1925 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV_DONGLE_MINID,
1926 		&rtl28xxu_props, "Leadtek Winfast DTV Dongle Mini D", NULL) },
1927 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV2000DS_PLUS,
1928 		&rtl28xxu_props, "Leadtek WinFast DTV2000DS Plus", RC_MAP_LEADTEK_Y04G0051) },
1929 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d3,
1930 		&rtl28xxu_props, "TerraTec Cinergy T Stick RC (Rev. 3)", NULL) },
1931 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1102,
1932 		&rtl28xxu_props, "Dexatek DK mini DVB-T Dongle", NULL) },
1933 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d7,
1934 		&rtl28xxu_props, "TerraTec Cinergy T Stick+", NULL) },
1935 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd3a8,
1936 		&rtl28xxu_props, "ASUS My Cinema-U3100Mini Plus V2", NULL) },
1937 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd393,
1938 		&rtl28xxu_props, "GIGABYTE U7300", NULL) },
1939 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1104,
1940 		&rtl28xxu_props, "MSI DIGIVOX Micro HD", NULL) },
1941 	{ DVB_USB_DEVICE(USB_VID_COMPRO, 0x0620,
1942 		&rtl28xxu_props, "Compro VideoMate U620F", NULL) },
1943 	{ DVB_USB_DEVICE(USB_VID_COMPRO, 0x0650,
1944 		&rtl28xxu_props, "Compro VideoMate U650F", NULL) },
1945 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd394,
1946 		&rtl28xxu_props, "MaxMedia HU394-T", NULL) },
1947 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6a03,
1948 		&rtl28xxu_props, "Leadtek WinFast DTV Dongle mini", NULL) },
1949 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_CPYTO_REDI_PC50A,
1950 		&rtl28xxu_props, "Crypto ReDi PC 50 A", NULL) },
1951 	{ DVB_USB_DEVICE(USB_VID_KYE, 0x707f,
1952 		&rtl28xxu_props, "Genius TVGo DVB-T03", NULL) },
1953 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd395,
1954 		&rtl28xxu_props, "Peak DVB-T USB", NULL) },
1955 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV20_RTL2832U,
1956 		&rtl28xxu_props, "Sveon STV20", NULL) },
1957 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV21,
1958 		&rtl28xxu_props, "Sveon STV21", NULL) },
1959 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV27,
1960 		&rtl28xxu_props, "Sveon STV27", NULL) },
1961 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_TURBOX_DTT_2000,
1962 		&rtl28xxu_props, "TURBO-X Pure TV Tuner DTT-2000", NULL) },
1963 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_PROLECTRIX_DV107669,
1964 		&rtl28xxu_props, "PROlectrix DV107669", NULL) },
1965 
1966 	/* RTL2832P devices: */
1967 	{ DVB_USB_DEVICE(USB_VID_HANFTEK, 0x0131,
1968 		&rtl28xxu_props, "Astrometa DVB-T2",
1969 		RC_MAP_ASTROMETA_T2HYBRID) },
1970 	{ DVB_USB_DEVICE(0x5654, 0xca42,
1971 		&rtl28xxu_props, "GoTView MasterHD 3", NULL) },
1972 	{ }
1973 };
1974 MODULE_DEVICE_TABLE(usb, rtl28xxu_id_table);
1975 
1976 static struct usb_driver rtl28xxu_usb_driver = {
1977 	.name = KBUILD_MODNAME,
1978 	.id_table = rtl28xxu_id_table,
1979 	.probe = dvb_usbv2_probe,
1980 	.disconnect = dvb_usbv2_disconnect,
1981 	.suspend = dvb_usbv2_suspend,
1982 	.resume = dvb_usbv2_resume,
1983 	.reset_resume = dvb_usbv2_reset_resume,
1984 	.no_dynamic_id = 1,
1985 	.soft_unbind = 1,
1986 };
1987 
1988 module_usb_driver(rtl28xxu_usb_driver);
1989 
1990 MODULE_DESCRIPTION("Realtek RTL28xxU DVB USB driver");
1991 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1992 MODULE_AUTHOR("Thomas Mair <thomas.mair86@googlemail.com>");
1993 MODULE_LICENSE("GPL");
1994