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 		pipe = usb_rcvctrlpipe(d->udev, 0);
41 	}
42 
43 	ret = usb_control_msg(d->udev, pipe, 0, requesttype, req->value,
44 			req->index, dev->buf, req->size, 1000);
45 	dvb_usb_dbg_usb_control_msg(d->udev, 0, requesttype, req->value,
46 			req->index, dev->buf, req->size);
47 	if (ret < 0)
48 		goto err_mutex_unlock;
49 
50 	/* read request, copy returned data to return buf */
51 	if (requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
52 		memcpy(req->data, dev->buf, req->size);
53 
54 	mutex_unlock(&d->usb_mutex);
55 
56 	return 0;
57 err_mutex_unlock:
58 	mutex_unlock(&d->usb_mutex);
59 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
60 	return ret;
61 }
62 
63 static int rtl28xxu_wr_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
64 {
65 	struct rtl28xxu_req req;
66 
67 	if (reg < 0x3000)
68 		req.index = CMD_USB_WR;
69 	else if (reg < 0x4000)
70 		req.index = CMD_SYS_WR;
71 	else
72 		req.index = CMD_IR_WR;
73 
74 	req.value = reg;
75 	req.size = len;
76 	req.data = val;
77 
78 	return rtl28xxu_ctrl_msg(d, &req);
79 }
80 
81 static int rtl28xxu_rd_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
82 {
83 	struct rtl28xxu_req req;
84 
85 	if (reg < 0x3000)
86 		req.index = CMD_USB_RD;
87 	else if (reg < 0x4000)
88 		req.index = CMD_SYS_RD;
89 	else
90 		req.index = CMD_IR_RD;
91 
92 	req.value = reg;
93 	req.size = len;
94 	req.data = val;
95 
96 	return rtl28xxu_ctrl_msg(d, &req);
97 }
98 
99 static int rtl28xxu_wr_reg(struct dvb_usb_device *d, u16 reg, u8 val)
100 {
101 	return rtl28xxu_wr_regs(d, reg, &val, 1);
102 }
103 
104 static int rtl28xxu_rd_reg(struct dvb_usb_device *d, u16 reg, u8 *val)
105 {
106 	return rtl28xxu_rd_regs(d, reg, val, 1);
107 }
108 
109 static int rtl28xxu_wr_reg_mask(struct dvb_usb_device *d, u16 reg, u8 val,
110 		u8 mask)
111 {
112 	int ret;
113 	u8 tmp;
114 
115 	/* no need for read if whole reg is written */
116 	if (mask != 0xff) {
117 		ret = rtl28xxu_rd_reg(d, reg, &tmp);
118 		if (ret)
119 			return ret;
120 
121 		val &= mask;
122 		tmp &= ~mask;
123 		val |= tmp;
124 	}
125 
126 	return rtl28xxu_wr_reg(d, reg, val);
127 }
128 
129 /* I2C */
130 static int rtl28xxu_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
131 	int num)
132 {
133 	int ret;
134 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
135 	struct rtl28xxu_dev *dev = d->priv;
136 	struct rtl28xxu_req req;
137 
138 	/*
139 	 * It is not known which are real I2C bus xfer limits, but testing
140 	 * with RTL2831U + MT2060 gives max RD 24 and max WR 22 bytes.
141 	 * TODO: find out RTL2832U lens
142 	 */
143 
144 	/*
145 	 * I2C adapter logic looks rather complicated due to fact it handles
146 	 * three different access methods. Those methods are;
147 	 * 1) integrated demod access
148 	 * 2) old I2C access
149 	 * 3) new I2C access
150 	 *
151 	 * Used method is selected in order 1, 2, 3. Method 3 can handle all
152 	 * requests but there is two reasons why not use it always;
153 	 * 1) It is most expensive, usually two USB messages are needed
154 	 * 2) At least RTL2831U does not support it
155 	 *
156 	 * Method 3 is needed in case of I2C write+read (typical register read)
157 	 * where write is more than one byte.
158 	 */
159 
160 	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
161 		return -EAGAIN;
162 
163 	if (num == 2 && !(msg[0].flags & I2C_M_RD) &&
164 		(msg[1].flags & I2C_M_RD)) {
165 		if (msg[0].len > 24 || msg[1].len > 24) {
166 			/* TODO: check msg[0].len max */
167 			ret = -EOPNOTSUPP;
168 			goto err_mutex_unlock;
169 		} else if (msg[0].addr == 0x10) {
170 			/* method 1 - integrated demod */
171 			if (msg[0].buf[0] == 0x00) {
172 				/* return demod page from driver cache */
173 				msg[1].buf[0] = dev->page;
174 				ret = 0;
175 			} else {
176 				req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
177 				req.index = CMD_DEMOD_RD | dev->page;
178 				req.size = msg[1].len;
179 				req.data = &msg[1].buf[0];
180 				ret = rtl28xxu_ctrl_msg(d, &req);
181 			}
182 		} else if (msg[0].len < 2) {
183 			/* method 2 - old I2C */
184 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
185 			req.index = CMD_I2C_RD;
186 			req.size = msg[1].len;
187 			req.data = &msg[1].buf[0];
188 			ret = rtl28xxu_ctrl_msg(d, &req);
189 		} else {
190 			/* method 3 - new I2C */
191 			req.value = (msg[0].addr << 1);
192 			req.index = CMD_I2C_DA_WR;
193 			req.size = msg[0].len;
194 			req.data = msg[0].buf;
195 			ret = rtl28xxu_ctrl_msg(d, &req);
196 			if (ret)
197 				goto err_mutex_unlock;
198 
199 			req.value = (msg[0].addr << 1);
200 			req.index = CMD_I2C_DA_RD;
201 			req.size = msg[1].len;
202 			req.data = msg[1].buf;
203 			ret = rtl28xxu_ctrl_msg(d, &req);
204 		}
205 	} else if (num == 1 && !(msg[0].flags & I2C_M_RD)) {
206 		if (msg[0].len > 22) {
207 			/* TODO: check msg[0].len max */
208 			ret = -EOPNOTSUPP;
209 			goto err_mutex_unlock;
210 		} else if (msg[0].addr == 0x10) {
211 			/* method 1 - integrated demod */
212 			if (msg[0].buf[0] == 0x00) {
213 				/* save demod page for later demod access */
214 				dev->page = msg[0].buf[1];
215 				ret = 0;
216 			} else {
217 				req.value = (msg[0].buf[0] << 8) |
218 					(msg[0].addr << 1);
219 				req.index = CMD_DEMOD_WR | dev->page;
220 				req.size = msg[0].len-1;
221 				req.data = &msg[0].buf[1];
222 				ret = rtl28xxu_ctrl_msg(d, &req);
223 			}
224 		} else if ((msg[0].len < 23) && (!dev->new_i2c_write)) {
225 			/* method 2 - old I2C */
226 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
227 			req.index = CMD_I2C_WR;
228 			req.size = msg[0].len-1;
229 			req.data = &msg[0].buf[1];
230 			ret = rtl28xxu_ctrl_msg(d, &req);
231 		} else {
232 			/* method 3 - new I2C */
233 			req.value = (msg[0].addr << 1);
234 			req.index = CMD_I2C_DA_WR;
235 			req.size = msg[0].len;
236 			req.data = msg[0].buf;
237 			ret = rtl28xxu_ctrl_msg(d, &req);
238 		}
239 	} else if (num == 1 && (msg[0].flags & I2C_M_RD)) {
240 		req.value = (msg[0].addr << 1);
241 		req.index = CMD_I2C_DA_RD;
242 		req.size = msg[0].len;
243 		req.data = msg[0].buf;
244 		ret = rtl28xxu_ctrl_msg(d, &req);
245 	} else {
246 		ret = -EOPNOTSUPP;
247 	}
248 
249 	/* Retry failed I2C messages */
250 	if (ret == -EPIPE)
251 		ret = -EAGAIN;
252 
253 err_mutex_unlock:
254 	mutex_unlock(&d->i2c_mutex);
255 
256 	return ret ? ret : num;
257 }
258 
259 static u32 rtl28xxu_i2c_func(struct i2c_adapter *adapter)
260 {
261 	return I2C_FUNC_I2C;
262 }
263 
264 static struct i2c_algorithm rtl28xxu_i2c_algo = {
265 	.master_xfer   = rtl28xxu_i2c_xfer,
266 	.functionality = rtl28xxu_i2c_func,
267 };
268 
269 static int rtl2831u_read_config(struct dvb_usb_device *d)
270 {
271 	struct rtl28xxu_dev *dev = d_to_priv(d);
272 	int ret;
273 	u8 buf[1];
274 	/* open RTL2831U/RTL2830 I2C gate */
275 	struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x08"};
276 	/* tuner probes */
277 	struct rtl28xxu_req req_mt2060 = {0x00c0, CMD_I2C_RD, 1, buf};
278 	struct rtl28xxu_req req_qt1010 = {0x0fc4, CMD_I2C_RD, 1, buf};
279 
280 	dev_dbg(&d->intf->dev, "\n");
281 
282 	/*
283 	 * RTL2831U GPIOs
284 	 * =========================================================
285 	 * GPIO0 | tuner#0 | 0 off | 1 on  | MXL5005S (?)
286 	 * GPIO2 | LED     | 0 off | 1 on  |
287 	 * GPIO4 | tuner#1 | 0 on  | 1 off | MT2060
288 	 */
289 
290 	/* GPIO direction */
291 	ret = rtl28xxu_wr_reg(d, SYS_GPIO_DIR, 0x0a);
292 	if (ret)
293 		goto err;
294 
295 	/* enable as output GPIO0, GPIO2, GPIO4 */
296 	ret = rtl28xxu_wr_reg(d, SYS_GPIO_OUT_EN, 0x15);
297 	if (ret)
298 		goto err;
299 
300 	/*
301 	 * Probe used tuner. We need to know used tuner before demod attach
302 	 * since there is some demod params needed to set according to tuner.
303 	 */
304 
305 	/* demod needs some time to wake up */
306 	msleep(20);
307 
308 	dev->tuner_name = "NONE";
309 
310 	/* open demod I2C gate */
311 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
312 	if (ret)
313 		goto err;
314 
315 	/* check QT1010 ID(?) register; reg=0f val=2c */
316 	ret = rtl28xxu_ctrl_msg(d, &req_qt1010);
317 	if (ret == 0 && buf[0] == 0x2c) {
318 		dev->tuner = TUNER_RTL2830_QT1010;
319 		dev->tuner_name = "QT1010";
320 		goto found;
321 	}
322 
323 	/* open demod I2C gate */
324 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
325 	if (ret)
326 		goto err;
327 
328 	/* check MT2060 ID register; reg=00 val=63 */
329 	ret = rtl28xxu_ctrl_msg(d, &req_mt2060);
330 	if (ret == 0 && buf[0] == 0x63) {
331 		dev->tuner = TUNER_RTL2830_MT2060;
332 		dev->tuner_name = "MT2060";
333 		goto found;
334 	}
335 
336 	/* assume MXL5005S */
337 	dev->tuner = TUNER_RTL2830_MXL5005S;
338 	dev->tuner_name = "MXL5005S";
339 	goto found;
340 
341 found:
342 	dev_dbg(&d->intf->dev, "tuner=%s\n", dev->tuner_name);
343 
344 	return 0;
345 err:
346 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
347 	return ret;
348 }
349 
350 static int rtl2832u_read_config(struct dvb_usb_device *d)
351 {
352 	struct rtl28xxu_dev *dev = d_to_priv(d);
353 	int ret;
354 	u8 buf[2];
355 	/* open RTL2832U/RTL2832 I2C gate */
356 	struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x18"};
357 	/* close RTL2832U/RTL2832 I2C gate */
358 	struct rtl28xxu_req req_gate_close = {0x0120, 0x0011, 0x0001, "\x10"};
359 	/* tuner probes */
360 	struct rtl28xxu_req req_fc0012 = {0x00c6, CMD_I2C_RD, 1, buf};
361 	struct rtl28xxu_req req_fc0013 = {0x00c6, CMD_I2C_RD, 1, buf};
362 	struct rtl28xxu_req req_mt2266 = {0x00c0, CMD_I2C_RD, 1, buf};
363 	struct rtl28xxu_req req_fc2580 = {0x01ac, CMD_I2C_RD, 1, buf};
364 	struct rtl28xxu_req req_mt2063 = {0x00c0, CMD_I2C_RD, 1, buf};
365 	struct rtl28xxu_req req_max3543 = {0x00c0, CMD_I2C_RD, 1, buf};
366 	struct rtl28xxu_req req_tua9001 = {0x7ec0, CMD_I2C_RD, 2, buf};
367 	struct rtl28xxu_req req_mxl5007t = {0xd9c0, CMD_I2C_RD, 1, buf};
368 	struct rtl28xxu_req req_e4000 = {0x02c8, CMD_I2C_RD, 1, buf};
369 	struct rtl28xxu_req req_tda18272 = {0x00c0, CMD_I2C_RD, 2, buf};
370 	struct rtl28xxu_req req_r820t = {0x0034, CMD_I2C_RD, 1, buf};
371 	struct rtl28xxu_req req_r828d = {0x0074, CMD_I2C_RD, 1, buf};
372 	struct rtl28xxu_req req_mn88472 = {0xff38, CMD_I2C_RD, 1, buf};
373 	struct rtl28xxu_req req_mn88473 = {0xff38, CMD_I2C_RD, 1, buf};
374 	struct rtl28xxu_req req_cxd2837er = {0xfdd8, CMD_I2C_RD, 1, buf};
375 	struct rtl28xxu_req req_si2157 = {0x00c0, CMD_I2C_RD, 1, buf};
376 	struct rtl28xxu_req req_si2168 = {0x00c8, CMD_I2C_RD, 1, buf};
377 
378 	dev_dbg(&d->intf->dev, "\n");
379 
380 	/* enable GPIO3 and GPIO6 as output */
381 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x40);
382 	if (ret)
383 		goto err;
384 
385 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x48, 0x48);
386 	if (ret)
387 		goto err;
388 
389 	/*
390 	 * Probe used tuner. We need to know used tuner before demod attach
391 	 * since there is some demod params needed to set according to tuner.
392 	 */
393 
394 	/* open demod I2C gate */
395 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
396 	if (ret)
397 		goto err;
398 
399 	dev->tuner_name = "NONE";
400 
401 	/* check FC0012 ID register; reg=00 val=a1 */
402 	ret = rtl28xxu_ctrl_msg(d, &req_fc0012);
403 	if (ret == 0 && buf[0] == 0xa1) {
404 		dev->tuner = TUNER_RTL2832_FC0012;
405 		dev->tuner_name = "FC0012";
406 		goto tuner_found;
407 	}
408 
409 	/* check FC0013 ID register; reg=00 val=a3 */
410 	ret = rtl28xxu_ctrl_msg(d, &req_fc0013);
411 	if (ret == 0 && buf[0] == 0xa3) {
412 		dev->tuner = TUNER_RTL2832_FC0013;
413 		dev->tuner_name = "FC0013";
414 		goto tuner_found;
415 	}
416 
417 	/* check MT2266 ID register; reg=00 val=85 */
418 	ret = rtl28xxu_ctrl_msg(d, &req_mt2266);
419 	if (ret == 0 && buf[0] == 0x85) {
420 		dev->tuner = TUNER_RTL2832_MT2266;
421 		dev->tuner_name = "MT2266";
422 		goto tuner_found;
423 	}
424 
425 	/* check FC2580 ID register; reg=01 val=56 */
426 	ret = rtl28xxu_ctrl_msg(d, &req_fc2580);
427 	if (ret == 0 && buf[0] == 0x56) {
428 		dev->tuner = TUNER_RTL2832_FC2580;
429 		dev->tuner_name = "FC2580";
430 		goto tuner_found;
431 	}
432 
433 	/* check MT2063 ID register; reg=00 val=9e || 9c */
434 	ret = rtl28xxu_ctrl_msg(d, &req_mt2063);
435 	if (ret == 0 && (buf[0] == 0x9e || buf[0] == 0x9c)) {
436 		dev->tuner = TUNER_RTL2832_MT2063;
437 		dev->tuner_name = "MT2063";
438 		goto tuner_found;
439 	}
440 
441 	/* check MAX3543 ID register; reg=00 val=38 */
442 	ret = rtl28xxu_ctrl_msg(d, &req_max3543);
443 	if (ret == 0 && buf[0] == 0x38) {
444 		dev->tuner = TUNER_RTL2832_MAX3543;
445 		dev->tuner_name = "MAX3543";
446 		goto tuner_found;
447 	}
448 
449 	/* check TUA9001 ID register; reg=7e val=2328 */
450 	ret = rtl28xxu_ctrl_msg(d, &req_tua9001);
451 	if (ret == 0 && buf[0] == 0x23 && buf[1] == 0x28) {
452 		dev->tuner = TUNER_RTL2832_TUA9001;
453 		dev->tuner_name = "TUA9001";
454 		goto tuner_found;
455 	}
456 
457 	/* check MXL5007R ID register; reg=d9 val=14 */
458 	ret = rtl28xxu_ctrl_msg(d, &req_mxl5007t);
459 	if (ret == 0 && buf[0] == 0x14) {
460 		dev->tuner = TUNER_RTL2832_MXL5007T;
461 		dev->tuner_name = "MXL5007T";
462 		goto tuner_found;
463 	}
464 
465 	/* check E4000 ID register; reg=02 val=40 */
466 	ret = rtl28xxu_ctrl_msg(d, &req_e4000);
467 	if (ret == 0 && buf[0] == 0x40) {
468 		dev->tuner = TUNER_RTL2832_E4000;
469 		dev->tuner_name = "E4000";
470 		goto tuner_found;
471 	}
472 
473 	/* check TDA18272 ID register; reg=00 val=c760  */
474 	ret = rtl28xxu_ctrl_msg(d, &req_tda18272);
475 	if (ret == 0 && (buf[0] == 0xc7 || buf[1] == 0x60)) {
476 		dev->tuner = TUNER_RTL2832_TDA18272;
477 		dev->tuner_name = "TDA18272";
478 		goto tuner_found;
479 	}
480 
481 	/* check R820T ID register; reg=00 val=69 */
482 	ret = rtl28xxu_ctrl_msg(d, &req_r820t);
483 	if (ret == 0 && buf[0] == 0x69) {
484 		dev->tuner = TUNER_RTL2832_R820T;
485 		dev->tuner_name = "R820T";
486 		goto tuner_found;
487 	}
488 
489 	/* check R828D ID register; reg=00 val=69 */
490 	ret = rtl28xxu_ctrl_msg(d, &req_r828d);
491 	if (ret == 0 && buf[0] == 0x69) {
492 		dev->tuner = TUNER_RTL2832_R828D;
493 		dev->tuner_name = "R828D";
494 		goto tuner_found;
495 	}
496 
497 	/* GPIO0 and GPIO5 to reset Si2157/Si2168 tuner and demod */
498 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x00, 0x21);
499 	if (ret)
500 		goto err;
501 
502 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x00, 0x21);
503 	if (ret)
504 		goto err;
505 
506 	msleep(50);
507 
508 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x21, 0x21);
509 	if (ret)
510 		goto err;
511 
512 	ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x21, 0x21);
513 	if (ret)
514 		goto err;
515 
516 	msleep(50);
517 
518 	/* check Si2157 ID register; reg=c0 val=80 */
519 	ret = rtl28xxu_ctrl_msg(d, &req_si2157);
520 	if (ret == 0 && ((buf[0] & 0x80) == 0x80)) {
521 		dev->tuner = TUNER_RTL2832_SI2157;
522 		dev->tuner_name = "SI2157";
523 		goto tuner_found;
524 	}
525 
526 tuner_found:
527 	dev_dbg(&d->intf->dev, "tuner=%s\n", dev->tuner_name);
528 
529 	/* probe slave demod */
530 	if (dev->tuner == TUNER_RTL2832_R828D) {
531 		/* power off slave demod on GPIO0 to reset CXD2837ER */
532 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x00, 0x01);
533 		if (ret)
534 			goto err;
535 
536 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x00, 0x01);
537 		if (ret)
538 			goto err;
539 
540 		msleep(50);
541 
542 		/* power on slave demod on GPIO0 */
543 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x01, 0x01);
544 		if (ret)
545 			goto err;
546 
547 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x01);
548 		if (ret)
549 			goto err;
550 
551 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x01, 0x01);
552 		if (ret)
553 			goto err;
554 
555 		/* check slave answers */
556 		ret = rtl28xxu_ctrl_msg(d, &req_mn88472);
557 		if (ret == 0 && buf[0] == 0x02) {
558 			dev_dbg(&d->intf->dev, "MN88472 found\n");
559 			dev->slave_demod = SLAVE_DEMOD_MN88472;
560 			goto demod_found;
561 		}
562 
563 		ret = rtl28xxu_ctrl_msg(d, &req_mn88473);
564 		if (ret == 0 && buf[0] == 0x03) {
565 			dev_dbg(&d->intf->dev, "MN88473 found\n");
566 			dev->slave_demod = SLAVE_DEMOD_MN88473;
567 			goto demod_found;
568 		}
569 
570 		ret = rtl28xxu_ctrl_msg(d, &req_cxd2837er);
571 		if (ret == 0 && buf[0] == 0xb1) {
572 			dev_dbg(&d->intf->dev, "CXD2837ER found\n");
573 			dev->slave_demod = SLAVE_DEMOD_CXD2837ER;
574 			goto demod_found;
575 		}
576 	}
577 	if (dev->tuner == TUNER_RTL2832_SI2157) {
578 		/* check Si2168 ID register; reg=c8 val=80 */
579 		ret = rtl28xxu_ctrl_msg(d, &req_si2168);
580 		if (ret == 0 && ((buf[0] & 0x80) == 0x80)) {
581 			dev_dbg(&d->intf->dev, "Si2168 found\n");
582 			dev->slave_demod = SLAVE_DEMOD_SI2168;
583 			goto demod_found;
584 		}
585 	}
586 
587 demod_found:
588 	/* close demod I2C gate */
589 	ret = rtl28xxu_ctrl_msg(d, &req_gate_close);
590 	if (ret < 0)
591 		goto err;
592 
593 	return 0;
594 err:
595 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
596 	return ret;
597 }
598 
599 static int rtl28xxu_read_config(struct dvb_usb_device *d)
600 {
601 	struct rtl28xxu_dev *dev = d_to_priv(d);
602 
603 	if (dev->chip_id == CHIP_ID_RTL2831U)
604 		return rtl2831u_read_config(d);
605 	else
606 		return rtl2832u_read_config(d);
607 }
608 
609 static int rtl28xxu_identify_state(struct dvb_usb_device *d, const char **name)
610 {
611 	struct rtl28xxu_dev *dev = d_to_priv(d);
612 	int ret;
613 	struct rtl28xxu_req req_demod_i2c = {0x0020, CMD_I2C_DA_RD, 0, NULL};
614 
615 	dev_dbg(&d->intf->dev, "\n");
616 
617 	/*
618 	 * Detect chip type using I2C command that is not supported
619 	 * by old RTL2831U.
620 	 */
621 	ret = rtl28xxu_ctrl_msg(d, &req_demod_i2c);
622 	if (ret == -EPIPE) {
623 		dev->chip_id = CHIP_ID_RTL2831U;
624 	} else if (ret == 0) {
625 		dev->chip_id = CHIP_ID_RTL2832U;
626 	} else {
627 		dev_err(&d->intf->dev, "chip type detection failed %d\n", ret);
628 		goto err;
629 	}
630 	dev_dbg(&d->intf->dev, "chip_id=%u\n", dev->chip_id);
631 
632 	/* Retry failed I2C messages */
633 	d->i2c_adap.retries = 3;
634 	d->i2c_adap.timeout = msecs_to_jiffies(10);
635 
636 	return WARM;
637 err:
638 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
639 	return ret;
640 }
641 
642 static const struct rtl2830_platform_data rtl2830_mt2060_platform_data = {
643 	.clk = 28800000,
644 	.spec_inv = 1,
645 	.vtop = 0x20,
646 	.krf = 0x04,
647 	.agc_targ_val = 0x2d,
648 
649 };
650 
651 static const struct rtl2830_platform_data rtl2830_qt1010_platform_data = {
652 	.clk = 28800000,
653 	.spec_inv = 1,
654 	.vtop = 0x20,
655 	.krf = 0x04,
656 	.agc_targ_val = 0x2d,
657 };
658 
659 static const struct rtl2830_platform_data rtl2830_mxl5005s_platform_data = {
660 	.clk = 28800000,
661 	.spec_inv = 0,
662 	.vtop = 0x3f,
663 	.krf = 0x04,
664 	.agc_targ_val = 0x3e,
665 };
666 
667 static int rtl2831u_frontend_attach(struct dvb_usb_adapter *adap)
668 {
669 	struct dvb_usb_device *d = adap_to_d(adap);
670 	struct rtl28xxu_dev *dev = d_to_priv(d);
671 	struct rtl2830_platform_data *pdata = &dev->rtl2830_platform_data;
672 	struct i2c_board_info board_info;
673 	struct i2c_client *client;
674 	int ret;
675 
676 	dev_dbg(&d->intf->dev, "\n");
677 
678 	switch (dev->tuner) {
679 	case TUNER_RTL2830_QT1010:
680 		*pdata = rtl2830_qt1010_platform_data;
681 		break;
682 	case TUNER_RTL2830_MT2060:
683 		*pdata = rtl2830_mt2060_platform_data;
684 		break;
685 	case TUNER_RTL2830_MXL5005S:
686 		*pdata = rtl2830_mxl5005s_platform_data;
687 		break;
688 	default:
689 		dev_err(&d->intf->dev, "unknown tuner %s\n", dev->tuner_name);
690 		ret = -ENODEV;
691 		goto err;
692 	}
693 
694 	/* attach demodulator */
695 	memset(&board_info, 0, sizeof(board_info));
696 	strscpy(board_info.type, "rtl2830", I2C_NAME_SIZE);
697 	board_info.addr = 0x10;
698 	board_info.platform_data = pdata;
699 	request_module("%s", board_info.type);
700 	client = i2c_new_device(&d->i2c_adap, &board_info);
701 	if (client == NULL || client->dev.driver == NULL) {
702 		ret = -ENODEV;
703 		goto err;
704 	}
705 
706 	if (!try_module_get(client->dev.driver->owner)) {
707 		i2c_unregister_device(client);
708 		ret = -ENODEV;
709 		goto err;
710 	}
711 
712 	adap->fe[0] = pdata->get_dvb_frontend(client);
713 	dev->demod_i2c_adapter = pdata->get_i2c_adapter(client);
714 
715 	dev->i2c_client_demod = client;
716 
717 	return 0;
718 err:
719 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
720 	return ret;
721 }
722 
723 static const struct rtl2832_platform_data rtl2832_fc2580_platform_data = {
724 	.clk = 28800000,
725 	.tuner = TUNER_RTL2832_FC2580,
726 };
727 
728 static const struct rtl2832_platform_data rtl2832_fc0012_platform_data = {
729 	.clk = 28800000,
730 	.tuner = TUNER_RTL2832_FC0012
731 };
732 
733 static const struct rtl2832_platform_data rtl2832_fc0013_platform_data = {
734 	.clk = 28800000,
735 	.tuner = TUNER_RTL2832_FC0013
736 };
737 
738 static const struct rtl2832_platform_data rtl2832_tua9001_platform_data = {
739 	.clk = 28800000,
740 	.tuner = TUNER_RTL2832_TUA9001,
741 };
742 
743 static const struct rtl2832_platform_data rtl2832_e4000_platform_data = {
744 	.clk = 28800000,
745 	.tuner = TUNER_RTL2832_E4000,
746 };
747 
748 static const struct rtl2832_platform_data rtl2832_r820t_platform_data = {
749 	.clk = 28800000,
750 	.tuner = TUNER_RTL2832_R820T,
751 };
752 
753 static const struct rtl2832_platform_data rtl2832_si2157_platform_data = {
754 	.clk = 28800000,
755 	.tuner = TUNER_RTL2832_SI2157,
756 };
757 
758 static int rtl2832u_fc0012_tuner_callback(struct dvb_usb_device *d,
759 		int cmd, int arg)
760 {
761 	int ret;
762 	u8 val;
763 
764 	dev_dbg(&d->intf->dev, "cmd=%d arg=%d\n", cmd, arg);
765 
766 	switch (cmd) {
767 	case FC_FE_CALLBACK_VHF_ENABLE:
768 		/* set output values */
769 		ret = rtl28xxu_rd_reg(d, SYS_GPIO_OUT_VAL, &val);
770 		if (ret)
771 			goto err;
772 
773 		if (arg)
774 			val &= 0xbf; /* set GPIO6 low */
775 		else
776 			val |= 0x40; /* set GPIO6 high */
777 
778 
779 		ret = rtl28xxu_wr_reg(d, SYS_GPIO_OUT_VAL, val);
780 		if (ret)
781 			goto err;
782 		break;
783 	default:
784 		ret = -EINVAL;
785 		goto err;
786 	}
787 	return 0;
788 err:
789 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
790 	return ret;
791 }
792 
793 static int rtl2832u_tua9001_tuner_callback(struct dvb_usb_device *d,
794 		int cmd, int arg)
795 {
796 	int ret;
797 	u8 val;
798 
799 	dev_dbg(&d->intf->dev, "cmd=%d arg=%d\n", cmd, arg);
800 
801 	/*
802 	 * CEN     always enabled by hardware wiring
803 	 * RESETN  GPIO4
804 	 * RXEN    GPIO1
805 	 */
806 
807 	switch (cmd) {
808 	case TUA9001_CMD_RESETN:
809 		if (arg)
810 			val = (1 << 4);
811 		else
812 			val = (0 << 4);
813 
814 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x10);
815 		if (ret)
816 			goto err;
817 		break;
818 	case TUA9001_CMD_RXEN:
819 		if (arg)
820 			val = (1 << 1);
821 		else
822 			val = (0 << 1);
823 
824 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x02);
825 		if (ret)
826 			goto err;
827 		break;
828 	}
829 
830 	return 0;
831 err:
832 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
833 	return ret;
834 }
835 
836 static int rtl2832u_frontend_callback(void *adapter_priv, int component,
837 		int cmd, int arg)
838 {
839 	struct i2c_adapter *adapter = adapter_priv;
840 	struct device *parent = adapter->dev.parent;
841 	struct i2c_adapter *parent_adapter;
842 	struct dvb_usb_device *d;
843 	struct rtl28xxu_dev *dev;
844 
845 	/*
846 	 * All tuners are connected to demod muxed I2C adapter. We have to
847 	 * resolve its parent adapter in order to get handle for this driver
848 	 * private data. That is a bit hackish solution, GPIO or direct driver
849 	 * callback would be better...
850 	 */
851 	if (parent != NULL && parent->type == &i2c_adapter_type)
852 		parent_adapter = to_i2c_adapter(parent);
853 	else
854 		return -EINVAL;
855 
856 	d = i2c_get_adapdata(parent_adapter);
857 	dev = d->priv;
858 
859 	dev_dbg(&d->intf->dev, "component=%d cmd=%d arg=%d\n",
860 		component, cmd, arg);
861 
862 	switch (component) {
863 	case DVB_FRONTEND_COMPONENT_TUNER:
864 		switch (dev->tuner) {
865 		case TUNER_RTL2832_FC0012:
866 			return rtl2832u_fc0012_tuner_callback(d, cmd, arg);
867 		case TUNER_RTL2832_TUA9001:
868 			return rtl2832u_tua9001_tuner_callback(d, cmd, arg);
869 		}
870 	}
871 
872 	return 0;
873 }
874 
875 static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
876 {
877 	struct dvb_usb_device *d = adap_to_d(adap);
878 	struct rtl28xxu_dev *dev = d_to_priv(d);
879 	struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
880 	struct i2c_board_info board_info;
881 	struct i2c_client *client;
882 	int ret;
883 
884 	dev_dbg(&d->intf->dev, "\n");
885 
886 	switch (dev->tuner) {
887 	case TUNER_RTL2832_FC0012:
888 		*pdata = rtl2832_fc0012_platform_data;
889 		break;
890 	case TUNER_RTL2832_FC0013:
891 		*pdata = rtl2832_fc0013_platform_data;
892 		break;
893 	case TUNER_RTL2832_FC2580:
894 		*pdata = rtl2832_fc2580_platform_data;
895 		break;
896 	case TUNER_RTL2832_TUA9001:
897 		*pdata = rtl2832_tua9001_platform_data;
898 		break;
899 	case TUNER_RTL2832_E4000:
900 		*pdata = rtl2832_e4000_platform_data;
901 		break;
902 	case TUNER_RTL2832_R820T:
903 	case TUNER_RTL2832_R828D:
904 		*pdata = rtl2832_r820t_platform_data;
905 		break;
906 	case TUNER_RTL2832_SI2157:
907 		*pdata = rtl2832_si2157_platform_data;
908 		break;
909 	default:
910 		dev_err(&d->intf->dev, "unknown tuner %s\n", dev->tuner_name);
911 		ret = -ENODEV;
912 		goto err;
913 	}
914 
915 	/* attach demodulator */
916 	memset(&board_info, 0, sizeof(board_info));
917 	strscpy(board_info.type, "rtl2832", I2C_NAME_SIZE);
918 	board_info.addr = 0x10;
919 	board_info.platform_data = pdata;
920 	request_module("%s", board_info.type);
921 	client = i2c_new_device(&d->i2c_adap, &board_info);
922 	if (client == NULL || client->dev.driver == NULL) {
923 		ret = -ENODEV;
924 		goto err;
925 	}
926 
927 	if (!try_module_get(client->dev.driver->owner)) {
928 		i2c_unregister_device(client);
929 		ret = -ENODEV;
930 		goto err;
931 	}
932 
933 	adap->fe[0] = pdata->get_dvb_frontend(client);
934 	dev->demod_i2c_adapter = pdata->get_i2c_adapter(client);
935 
936 	dev->i2c_client_demod = client;
937 
938 	/* set fe callback */
939 	adap->fe[0]->callback = rtl2832u_frontend_callback;
940 
941 	if (dev->slave_demod) {
942 		struct i2c_board_info info = {};
943 
944 		/*
945 		 * We continue on reduced mode, without DVB-T2/C, using master
946 		 * demod, when slave demod fails.
947 		 */
948 		ret = 0;
949 
950 		/* attach slave demodulator */
951 		if (dev->slave_demod == SLAVE_DEMOD_MN88472) {
952 			struct mn88472_config mn88472_config = {};
953 
954 			mn88472_config.fe = &adap->fe[1];
955 			mn88472_config.i2c_wr_max = 22,
956 			strscpy(info.type, "mn88472", I2C_NAME_SIZE);
957 			mn88472_config.xtal = 20500000;
958 			mn88472_config.ts_mode = SERIAL_TS_MODE;
959 			mn88472_config.ts_clock = VARIABLE_TS_CLOCK;
960 			info.addr = 0x18;
961 			info.platform_data = &mn88472_config;
962 			request_module(info.type);
963 			client = i2c_new_device(&d->i2c_adap, &info);
964 			if (client == NULL || client->dev.driver == NULL) {
965 				dev->slave_demod = SLAVE_DEMOD_NONE;
966 				goto err_slave_demod_failed;
967 			}
968 
969 			if (!try_module_get(client->dev.driver->owner)) {
970 				i2c_unregister_device(client);
971 				dev->slave_demod = SLAVE_DEMOD_NONE;
972 				goto err_slave_demod_failed;
973 			}
974 
975 			dev->i2c_client_slave_demod = client;
976 		} else if (dev->slave_demod == SLAVE_DEMOD_MN88473) {
977 			struct mn88473_config mn88473_config = {};
978 
979 			mn88473_config.fe = &adap->fe[1];
980 			mn88473_config.i2c_wr_max = 22,
981 			strscpy(info.type, "mn88473", I2C_NAME_SIZE);
982 			info.addr = 0x18;
983 			info.platform_data = &mn88473_config;
984 			request_module(info.type);
985 			client = i2c_new_device(&d->i2c_adap, &info);
986 			if (client == NULL || client->dev.driver == NULL) {
987 				dev->slave_demod = SLAVE_DEMOD_NONE;
988 				goto err_slave_demod_failed;
989 			}
990 
991 			if (!try_module_get(client->dev.driver->owner)) {
992 				i2c_unregister_device(client);
993 				dev->slave_demod = SLAVE_DEMOD_NONE;
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 				dev->slave_demod = SLAVE_DEMOD_NONE;
1011 				goto err_slave_demod_failed;
1012 			}
1013 			adap->fe[1]->id = 1;
1014 			dev->i2c_client_slave_demod = NULL;
1015 		} else {
1016 			struct si2168_config si2168_config = {};
1017 			struct i2c_adapter *adapter;
1018 
1019 			si2168_config.i2c_adapter = &adapter;
1020 			si2168_config.fe = &adap->fe[1];
1021 			si2168_config.ts_mode = SI2168_TS_SERIAL;
1022 			si2168_config.ts_clock_inv = false;
1023 			si2168_config.ts_clock_gapped = true;
1024 			strscpy(info.type, "si2168", I2C_NAME_SIZE);
1025 			info.addr = 0x64;
1026 			info.platform_data = &si2168_config;
1027 			request_module(info.type);
1028 			client = i2c_new_device(&d->i2c_adap, &info);
1029 			if (client == NULL || client->dev.driver == NULL) {
1030 				dev->slave_demod = SLAVE_DEMOD_NONE;
1031 				goto err_slave_demod_failed;
1032 			}
1033 
1034 			if (!try_module_get(client->dev.driver->owner)) {
1035 				i2c_unregister_device(client);
1036 				dev->slave_demod = SLAVE_DEMOD_NONE;
1037 				goto err_slave_demod_failed;
1038 			}
1039 
1040 			dev->i2c_client_slave_demod = client;
1041 
1042 			/* for Si2168 devices use only new I2C write method */
1043 			dev->new_i2c_write = true;
1044 		}
1045 	}
1046 	return 0;
1047 err_slave_demod_failed:
1048 err:
1049 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1050 	return ret;
1051 }
1052 
1053 static int rtl28xxu_frontend_attach(struct dvb_usb_adapter *adap)
1054 {
1055 	struct rtl28xxu_dev *dev = adap_to_priv(adap);
1056 
1057 	if (dev->chip_id == CHIP_ID_RTL2831U)
1058 		return rtl2831u_frontend_attach(adap);
1059 	else
1060 		return rtl2832u_frontend_attach(adap);
1061 }
1062 
1063 static int rtl28xxu_frontend_detach(struct dvb_usb_adapter *adap)
1064 {
1065 	struct dvb_usb_device *d = adap_to_d(adap);
1066 	struct rtl28xxu_dev *dev = d_to_priv(d);
1067 	struct i2c_client *client;
1068 
1069 	dev_dbg(&d->intf->dev, "\n");
1070 
1071 	/* remove I2C slave demod */
1072 	client = dev->i2c_client_slave_demod;
1073 	if (client) {
1074 		module_put(client->dev.driver->owner);
1075 		i2c_unregister_device(client);
1076 	}
1077 
1078 	/* remove I2C demod */
1079 	client = dev->i2c_client_demod;
1080 	if (client) {
1081 		module_put(client->dev.driver->owner);
1082 		i2c_unregister_device(client);
1083 	}
1084 
1085 	return 0;
1086 }
1087 
1088 static struct qt1010_config rtl28xxu_qt1010_config = {
1089 	.i2c_address = 0x62, /* 0xc4 */
1090 };
1091 
1092 static struct mt2060_config rtl28xxu_mt2060_config = {
1093 	.i2c_address = 0x60, /* 0xc0 */
1094 	.clock_out = 0,
1095 };
1096 
1097 static struct mxl5005s_config rtl28xxu_mxl5005s_config = {
1098 	.i2c_address     = 0x63, /* 0xc6 */
1099 	.if_freq         = IF_FREQ_4570000HZ,
1100 	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
1101 	.agc_mode        = MXL_SINGLE_AGC,
1102 	.tracking_filter = MXL_TF_C_H,
1103 	.rssi_enable     = MXL_RSSI_ENABLE,
1104 	.cap_select      = MXL_CAP_SEL_ENABLE,
1105 	.div_out         = MXL_DIV_OUT_4,
1106 	.clock_out       = MXL_CLOCK_OUT_DISABLE,
1107 	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
1108 	.top		 = MXL5005S_TOP_25P2,
1109 	.mod_mode        = MXL_DIGITAL_MODE,
1110 	.if_mode         = MXL_ZERO_IF,
1111 	.AgcMasterByte   = 0x00,
1112 };
1113 
1114 static int rtl2831u_tuner_attach(struct dvb_usb_adapter *adap)
1115 {
1116 	int ret;
1117 	struct dvb_usb_device *d = adap_to_d(adap);
1118 	struct rtl28xxu_dev *dev = d_to_priv(d);
1119 	struct dvb_frontend *fe;
1120 
1121 	dev_dbg(&d->intf->dev, "\n");
1122 
1123 	switch (dev->tuner) {
1124 	case TUNER_RTL2830_QT1010:
1125 		fe = dvb_attach(qt1010_attach, adap->fe[0],
1126 				dev->demod_i2c_adapter,
1127 				&rtl28xxu_qt1010_config);
1128 		break;
1129 	case TUNER_RTL2830_MT2060:
1130 		fe = dvb_attach(mt2060_attach, adap->fe[0],
1131 				dev->demod_i2c_adapter,
1132 				&rtl28xxu_mt2060_config, 1220);
1133 		break;
1134 	case TUNER_RTL2830_MXL5005S:
1135 		fe = dvb_attach(mxl5005s_attach, adap->fe[0],
1136 				dev->demod_i2c_adapter,
1137 				&rtl28xxu_mxl5005s_config);
1138 		break;
1139 	default:
1140 		fe = NULL;
1141 		dev_err(&d->intf->dev, "unknown tuner %d\n", dev->tuner);
1142 	}
1143 
1144 	if (fe == NULL) {
1145 		ret = -ENODEV;
1146 		goto err;
1147 	}
1148 
1149 	return 0;
1150 err:
1151 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1152 	return ret;
1153 }
1154 
1155 static const struct fc0012_config rtl2832u_fc0012_config = {
1156 	.i2c_address = 0x63, /* 0xc6 >> 1 */
1157 	.xtal_freq = FC_XTAL_28_8_MHZ,
1158 };
1159 
1160 static const struct r820t_config rtl2832u_r820t_config = {
1161 	.i2c_addr = 0x1a,
1162 	.xtal = 28800000,
1163 	.max_i2c_msg_len = 2,
1164 	.rafael_chip = CHIP_R820T,
1165 };
1166 
1167 static const struct r820t_config rtl2832u_r828d_config = {
1168 	.i2c_addr = 0x3a,
1169 	.xtal = 16000000,
1170 	.max_i2c_msg_len = 2,
1171 	.rafael_chip = CHIP_R828D,
1172 };
1173 
1174 static int rtl2832u_tuner_attach(struct dvb_usb_adapter *adap)
1175 {
1176 	int ret;
1177 	struct dvb_usb_device *d = adap_to_d(adap);
1178 	struct rtl28xxu_dev *dev = d_to_priv(d);
1179 	struct dvb_frontend *fe = NULL;
1180 	struct i2c_board_info info;
1181 	struct i2c_client *client;
1182 	struct v4l2_subdev *subdev = NULL;
1183 	struct platform_device *pdev;
1184 	struct rtl2832_sdr_platform_data pdata;
1185 
1186 	dev_dbg(&d->intf->dev, "\n");
1187 
1188 	memset(&info, 0, sizeof(struct i2c_board_info));
1189 	memset(&pdata, 0, sizeof(pdata));
1190 
1191 	switch (dev->tuner) {
1192 	case TUNER_RTL2832_FC0012:
1193 		fe = dvb_attach(fc0012_attach, adap->fe[0],
1194 			dev->demod_i2c_adapter, &rtl2832u_fc0012_config);
1195 
1196 		/* since fc0012 includs reading the signal strength delegate
1197 		 * that to the tuner driver */
1198 		adap->fe[0]->ops.read_signal_strength =
1199 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1200 		break;
1201 	case TUNER_RTL2832_FC0013:
1202 		fe = dvb_attach(fc0013_attach, adap->fe[0],
1203 			dev->demod_i2c_adapter, 0xc6>>1, 0, FC_XTAL_28_8_MHZ);
1204 
1205 		/* fc0013 also supports signal strength reading */
1206 		adap->fe[0]->ops.read_signal_strength =
1207 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1208 		break;
1209 	case TUNER_RTL2832_E4000: {
1210 			struct e4000_config e4000_config = {
1211 				.fe = adap->fe[0],
1212 				.clock = 28800000,
1213 			};
1214 
1215 			strscpy(info.type, "e4000", I2C_NAME_SIZE);
1216 			info.addr = 0x64;
1217 			info.platform_data = &e4000_config;
1218 
1219 			request_module(info.type);
1220 			client = i2c_new_device(dev->demod_i2c_adapter, &info);
1221 			if (client == NULL || client->dev.driver == NULL)
1222 				break;
1223 
1224 			if (!try_module_get(client->dev.driver->owner)) {
1225 				i2c_unregister_device(client);
1226 				break;
1227 			}
1228 
1229 			dev->i2c_client_tuner = client;
1230 			subdev = i2c_get_clientdata(client);
1231 		}
1232 		break;
1233 	case TUNER_RTL2832_FC2580: {
1234 			struct fc2580_platform_data fc2580_pdata = {
1235 				.dvb_frontend = adap->fe[0],
1236 			};
1237 			struct i2c_board_info board_info = {};
1238 
1239 			strscpy(board_info.type, "fc2580", I2C_NAME_SIZE);
1240 			board_info.addr = 0x56;
1241 			board_info.platform_data = &fc2580_pdata;
1242 			request_module("fc2580");
1243 			client = i2c_new_device(dev->demod_i2c_adapter,
1244 						&board_info);
1245 			if (client == NULL || client->dev.driver == NULL)
1246 				break;
1247 			if (!try_module_get(client->dev.driver->owner)) {
1248 				i2c_unregister_device(client);
1249 				break;
1250 			}
1251 			dev->i2c_client_tuner = client;
1252 			subdev = fc2580_pdata.get_v4l2_subdev(client);
1253 		}
1254 		break;
1255 	case TUNER_RTL2832_TUA9001: {
1256 		struct tua9001_platform_data tua9001_pdata = {
1257 			.dvb_frontend = adap->fe[0],
1258 		};
1259 		struct i2c_board_info board_info = {};
1260 
1261 		/* enable GPIO1 and GPIO4 as output */
1262 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x12);
1263 		if (ret)
1264 			goto err;
1265 
1266 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x12, 0x12);
1267 		if (ret)
1268 			goto err;
1269 
1270 		strscpy(board_info.type, "tua9001", I2C_NAME_SIZE);
1271 		board_info.addr = 0x60;
1272 		board_info.platform_data = &tua9001_pdata;
1273 		request_module("tua9001");
1274 		client = i2c_new_device(dev->demod_i2c_adapter, &board_info);
1275 		if (client == NULL || client->dev.driver == NULL)
1276 			break;
1277 		if (!try_module_get(client->dev.driver->owner)) {
1278 			i2c_unregister_device(client);
1279 			break;
1280 		}
1281 		dev->i2c_client_tuner = client;
1282 		break;
1283 	}
1284 	case TUNER_RTL2832_R820T:
1285 		fe = dvb_attach(r820t_attach, adap->fe[0],
1286 				dev->demod_i2c_adapter,
1287 				&rtl2832u_r820t_config);
1288 
1289 		/* Use tuner to get the signal strength */
1290 		adap->fe[0]->ops.read_signal_strength =
1291 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1292 		break;
1293 	case TUNER_RTL2832_R828D:
1294 		fe = dvb_attach(r820t_attach, adap->fe[0],
1295 				dev->demod_i2c_adapter,
1296 				&rtl2832u_r828d_config);
1297 		adap->fe[0]->ops.read_signal_strength =
1298 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1299 
1300 		if (adap->fe[1]) {
1301 			fe = dvb_attach(r820t_attach, adap->fe[1],
1302 					dev->demod_i2c_adapter,
1303 					&rtl2832u_r828d_config);
1304 			adap->fe[1]->ops.read_signal_strength =
1305 					adap->fe[1]->ops.tuner_ops.get_rf_strength;
1306 		}
1307 		break;
1308 	case TUNER_RTL2832_SI2157: {
1309 			struct si2157_config si2157_config = {
1310 				.fe = adap->fe[0],
1311 				.if_port = 0,
1312 				.inversion = false,
1313 			};
1314 
1315 			strscpy(info.type, "si2157", I2C_NAME_SIZE);
1316 			info.addr = 0x60;
1317 			info.platform_data = &si2157_config;
1318 			request_module(info.type);
1319 			client = i2c_new_device(&d->i2c_adap, &info);
1320 			if (client == NULL || client->dev.driver == NULL)
1321 				break;
1322 
1323 			if (!try_module_get(client->dev.driver->owner)) {
1324 				i2c_unregister_device(client);
1325 				break;
1326 			}
1327 
1328 			dev->i2c_client_tuner = client;
1329 			subdev = i2c_get_clientdata(client);
1330 
1331 			/* copy tuner ops for 2nd FE as tuner is shared */
1332 			if (adap->fe[1]) {
1333 				adap->fe[1]->tuner_priv =
1334 						adap->fe[0]->tuner_priv;
1335 				memcpy(&adap->fe[1]->ops.tuner_ops,
1336 						&adap->fe[0]->ops.tuner_ops,
1337 						sizeof(struct dvb_tuner_ops));
1338 			}
1339 		}
1340 		break;
1341 	default:
1342 		dev_err(&d->intf->dev, "unknown tuner %d\n", dev->tuner);
1343 	}
1344 	if (fe == NULL && dev->i2c_client_tuner == NULL) {
1345 		ret = -ENODEV;
1346 		goto err;
1347 	}
1348 
1349 	/* register SDR */
1350 	switch (dev->tuner) {
1351 	case TUNER_RTL2832_FC2580:
1352 	case TUNER_RTL2832_FC0012:
1353 	case TUNER_RTL2832_FC0013:
1354 	case TUNER_RTL2832_E4000:
1355 	case TUNER_RTL2832_R820T:
1356 	case TUNER_RTL2832_R828D:
1357 		pdata.clk = dev->rtl2832_platform_data.clk;
1358 		pdata.tuner = dev->tuner;
1359 		pdata.regmap = dev->rtl2832_platform_data.regmap;
1360 		pdata.dvb_frontend = adap->fe[0];
1361 		pdata.dvb_usb_device = d;
1362 		pdata.v4l2_subdev = subdev;
1363 
1364 		request_module("%s", "rtl2832_sdr");
1365 		pdev = platform_device_register_data(&d->intf->dev,
1366 						     "rtl2832_sdr",
1367 						     PLATFORM_DEVID_AUTO,
1368 						     &pdata, sizeof(pdata));
1369 		if (IS_ERR(pdev) || pdev->dev.driver == NULL)
1370 			break;
1371 		dev->platform_device_sdr = pdev;
1372 		break;
1373 	default:
1374 		dev_dbg(&d->intf->dev, "no SDR for tuner=%d\n", dev->tuner);
1375 	}
1376 
1377 	return 0;
1378 err:
1379 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1380 	return ret;
1381 }
1382 
1383 static int rtl28xxu_tuner_attach(struct dvb_usb_adapter *adap)
1384 {
1385 	struct rtl28xxu_dev *dev = adap_to_priv(adap);
1386 
1387 	if (dev->chip_id == CHIP_ID_RTL2831U)
1388 		return rtl2831u_tuner_attach(adap);
1389 	else
1390 		return rtl2832u_tuner_attach(adap);
1391 }
1392 
1393 static int rtl28xxu_tuner_detach(struct dvb_usb_adapter *adap)
1394 {
1395 	struct dvb_usb_device *d = adap_to_d(adap);
1396 	struct rtl28xxu_dev *dev = d_to_priv(d);
1397 	struct i2c_client *client;
1398 	struct platform_device *pdev;
1399 
1400 	dev_dbg(&d->intf->dev, "\n");
1401 
1402 	/* remove platform SDR */
1403 	pdev = dev->platform_device_sdr;
1404 	if (pdev)
1405 		platform_device_unregister(pdev);
1406 
1407 	/* remove I2C tuner */
1408 	client = dev->i2c_client_tuner;
1409 	if (client) {
1410 		module_put(client->dev.driver->owner);
1411 		i2c_unregister_device(client);
1412 	}
1413 
1414 	return 0;
1415 }
1416 
1417 static int rtl28xxu_init(struct dvb_usb_device *d)
1418 {
1419 	int ret;
1420 	u8 val;
1421 
1422 	dev_dbg(&d->intf->dev, "\n");
1423 
1424 	/* init USB endpoints */
1425 	ret = rtl28xxu_rd_reg(d, USB_SYSCTL_0, &val);
1426 	if (ret)
1427 		goto err;
1428 
1429 	/* enable DMA and Full Packet Mode*/
1430 	val |= 0x09;
1431 	ret = rtl28xxu_wr_reg(d, USB_SYSCTL_0, val);
1432 	if (ret)
1433 		goto err;
1434 
1435 	/* set EPA maximum packet size to 0x0200 */
1436 	ret = rtl28xxu_wr_regs(d, USB_EPA_MAXPKT, "\x00\x02\x00\x00", 4);
1437 	if (ret)
1438 		goto err;
1439 
1440 	/* change EPA FIFO length */
1441 	ret = rtl28xxu_wr_regs(d, USB_EPA_FIFO_CFG, "\x14\x00\x00\x00", 4);
1442 	if (ret)
1443 		goto err;
1444 
1445 	return ret;
1446 err:
1447 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1448 	return ret;
1449 }
1450 
1451 static int rtl2831u_power_ctrl(struct dvb_usb_device *d, int onoff)
1452 {
1453 	int ret;
1454 	u8 gpio, sys0, epa_ctl[2];
1455 
1456 	dev_dbg(&d->intf->dev, "onoff=%d\n", onoff);
1457 
1458 	/* demod adc */
1459 	ret = rtl28xxu_rd_reg(d, SYS_SYS0, &sys0);
1460 	if (ret)
1461 		goto err;
1462 
1463 	/* tuner power, read GPIOs */
1464 	ret = rtl28xxu_rd_reg(d, SYS_GPIO_OUT_VAL, &gpio);
1465 	if (ret)
1466 		goto err;
1467 
1468 	dev_dbg(&d->intf->dev, "RD SYS0=%02x GPIO_OUT_VAL=%02x\n", sys0, gpio);
1469 
1470 	if (onoff) {
1471 		gpio |= 0x01; /* GPIO0 = 1 */
1472 		gpio &= (~0x10); /* GPIO4 = 0 */
1473 		gpio |= 0x04; /* GPIO2 = 1, LED on */
1474 		sys0 = sys0 & 0x0f;
1475 		sys0 |= 0xe0;
1476 		epa_ctl[0] = 0x00; /* clear stall */
1477 		epa_ctl[1] = 0x00; /* clear reset */
1478 	} else {
1479 		gpio &= (~0x01); /* GPIO0 = 0 */
1480 		gpio |= 0x10; /* GPIO4 = 1 */
1481 		gpio &= (~0x04); /* GPIO2 = 1, LED off */
1482 		sys0 = sys0 & (~0xc0);
1483 		epa_ctl[0] = 0x10; /* set stall */
1484 		epa_ctl[1] = 0x02; /* set reset */
1485 	}
1486 
1487 	dev_dbg(&d->intf->dev, "WR SYS0=%02x GPIO_OUT_VAL=%02x\n", sys0, gpio);
1488 
1489 	/* demod adc */
1490 	ret = rtl28xxu_wr_reg(d, SYS_SYS0, sys0);
1491 	if (ret)
1492 		goto err;
1493 
1494 	/* tuner power, write GPIOs */
1495 	ret = rtl28xxu_wr_reg(d, SYS_GPIO_OUT_VAL, gpio);
1496 	if (ret)
1497 		goto err;
1498 
1499 	/* streaming EP: stall & reset */
1500 	ret = rtl28xxu_wr_regs(d, USB_EPA_CTL, epa_ctl, 2);
1501 	if (ret)
1502 		goto err;
1503 
1504 	if (onoff)
1505 		usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));
1506 
1507 	return ret;
1508 err:
1509 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1510 	return ret;
1511 }
1512 
1513 static int rtl2832u_power_ctrl(struct dvb_usb_device *d, int onoff)
1514 {
1515 	int ret;
1516 
1517 	dev_dbg(&d->intf->dev, "onoff=%d\n", onoff);
1518 
1519 	if (onoff) {
1520 		/* GPIO3=1, GPIO4=0 */
1521 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x08, 0x18);
1522 		if (ret)
1523 			goto err;
1524 
1525 		/* suspend? */
1526 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL1, 0x00, 0x10);
1527 		if (ret)
1528 			goto err;
1529 
1530 		/* enable PLL */
1531 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, 0x80, 0x80);
1532 		if (ret)
1533 			goto err;
1534 
1535 		/* disable reset */
1536 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, 0x20, 0x20);
1537 		if (ret)
1538 			goto err;
1539 
1540 		/* streaming EP: clear stall & reset */
1541 		ret = rtl28xxu_wr_regs(d, USB_EPA_CTL, "\x00\x00", 2);
1542 		if (ret)
1543 			goto err;
1544 
1545 		ret = usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));
1546 		if (ret)
1547 			goto err;
1548 	} else {
1549 		/* GPIO4=1 */
1550 		ret = rtl28xxu_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x10, 0x10);
1551 		if (ret)
1552 			goto err;
1553 
1554 		/* disable PLL */
1555 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, 0x00, 0x80);
1556 		if (ret)
1557 			goto err;
1558 
1559 		/* streaming EP: set stall & reset */
1560 		ret = rtl28xxu_wr_regs(d, USB_EPA_CTL, "\x10\x02", 2);
1561 		if (ret)
1562 			goto err;
1563 	}
1564 
1565 	return ret;
1566 err:
1567 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1568 	return ret;
1569 }
1570 
1571 static int rtl28xxu_power_ctrl(struct dvb_usb_device *d, int onoff)
1572 {
1573 	struct rtl28xxu_dev *dev = d_to_priv(d);
1574 
1575 	if (dev->chip_id == CHIP_ID_RTL2831U)
1576 		return rtl2831u_power_ctrl(d, onoff);
1577 	else
1578 		return rtl2832u_power_ctrl(d, onoff);
1579 }
1580 
1581 static int rtl28xxu_frontend_ctrl(struct dvb_frontend *fe, int onoff)
1582 {
1583 	struct dvb_usb_device *d = fe_to_d(fe);
1584 	struct rtl28xxu_dev *dev = fe_to_priv(fe);
1585 	struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
1586 	int ret;
1587 	u8 val;
1588 
1589 	dev_dbg(&d->intf->dev, "fe=%d onoff=%d\n", fe->id, onoff);
1590 
1591 	if (dev->chip_id == CHIP_ID_RTL2831U)
1592 		return 0;
1593 
1594 	if (fe->id == 0) {
1595 		/* control internal demod ADC */
1596 		if (onoff)
1597 			val = 0x48; /* enable ADC */
1598 		else
1599 			val = 0x00; /* disable ADC */
1600 
1601 		ret = rtl28xxu_wr_reg_mask(d, SYS_DEMOD_CTL, val, 0x48);
1602 		if (ret)
1603 			goto err;
1604 	} else if (fe->id == 1) {
1605 		/* bypass slave demod TS through master demod */
1606 		ret = pdata->slave_ts_ctrl(dev->i2c_client_demod, onoff);
1607 		if (ret)
1608 			goto err;
1609 	}
1610 
1611 	return 0;
1612 err:
1613 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1614 	return ret;
1615 }
1616 
1617 #if IS_ENABLED(CONFIG_RC_CORE)
1618 static int rtl2831u_rc_query(struct dvb_usb_device *d)
1619 {
1620 	int ret, i;
1621 	struct rtl28xxu_dev *dev = d->priv;
1622 	u8 buf[5];
1623 	u32 rc_code;
1624 	static const struct rtl28xxu_reg_val rc_nec_tab[] = {
1625 		{ 0x3033, 0x80 },
1626 		{ 0x3020, 0x43 },
1627 		{ 0x3021, 0x16 },
1628 		{ 0x3022, 0x16 },
1629 		{ 0x3023, 0x5a },
1630 		{ 0x3024, 0x2d },
1631 		{ 0x3025, 0x16 },
1632 		{ 0x3026, 0x01 },
1633 		{ 0x3028, 0xb0 },
1634 		{ 0x3029, 0x04 },
1635 		{ 0x302c, 0x88 },
1636 		{ 0x302e, 0x13 },
1637 		{ 0x3030, 0xdf },
1638 		{ 0x3031, 0x05 },
1639 	};
1640 
1641 	/* init remote controller */
1642 	if (!dev->rc_active) {
1643 		for (i = 0; i < ARRAY_SIZE(rc_nec_tab); i++) {
1644 			ret = rtl28xxu_wr_reg(d, rc_nec_tab[i].reg,
1645 					rc_nec_tab[i].val);
1646 			if (ret)
1647 				goto err;
1648 		}
1649 		dev->rc_active = true;
1650 	}
1651 
1652 	ret = rtl28xxu_rd_regs(d, SYS_IRRC_RP, buf, 5);
1653 	if (ret)
1654 		goto err;
1655 
1656 	if (buf[4] & 0x01) {
1657 		enum rc_proto proto;
1658 
1659 		if (buf[2] == (u8) ~buf[3]) {
1660 			if (buf[0] == (u8) ~buf[1]) {
1661 				/* NEC standard (16 bit) */
1662 				rc_code = RC_SCANCODE_NEC(buf[0], buf[2]);
1663 				proto = RC_PROTO_NEC;
1664 			} else {
1665 				/* NEC extended (24 bit) */
1666 				rc_code = RC_SCANCODE_NECX(buf[0] << 8 | buf[1],
1667 							   buf[2]);
1668 				proto = RC_PROTO_NECX;
1669 			}
1670 		} else {
1671 			/* NEC full (32 bit) */
1672 			rc_code = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
1673 						    buf[2] << 8  | buf[3]);
1674 			proto = RC_PROTO_NEC32;
1675 		}
1676 
1677 		rc_keydown(d->rc_dev, proto, rc_code, 0);
1678 
1679 		ret = rtl28xxu_wr_reg(d, SYS_IRRC_SR, 1);
1680 		if (ret)
1681 			goto err;
1682 
1683 		/* repeated intentionally to avoid extra keypress */
1684 		ret = rtl28xxu_wr_reg(d, SYS_IRRC_SR, 1);
1685 		if (ret)
1686 			goto err;
1687 	}
1688 
1689 	return ret;
1690 err:
1691 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1692 	return ret;
1693 }
1694 
1695 static int rtl2831u_get_rc_config(struct dvb_usb_device *d,
1696 		struct dvb_usb_rc *rc)
1697 {
1698 	rc->map_name = RC_MAP_EMPTY;
1699 	rc->allowed_protos = RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX |
1700 							RC_PROTO_BIT_NEC32;
1701 	rc->query = rtl2831u_rc_query;
1702 	rc->interval = 400;
1703 
1704 	return 0;
1705 }
1706 
1707 static int rtl2832u_rc_query(struct dvb_usb_device *d)
1708 {
1709 	int ret, i, len;
1710 	struct rtl28xxu_dev *dev = d->priv;
1711 	struct ir_raw_event ev = {};
1712 	u8 buf[128];
1713 	static const struct rtl28xxu_reg_val_mask refresh_tab[] = {
1714 		{IR_RX_IF,               0x03, 0xff},
1715 		{IR_RX_BUF_CTRL,         0x80, 0xff},
1716 		{IR_RX_CTRL,             0x80, 0xff},
1717 	};
1718 
1719 	/* init remote controller */
1720 	if (!dev->rc_active) {
1721 		static const struct rtl28xxu_reg_val_mask init_tab[] = {
1722 			{SYS_DEMOD_CTL1,         0x00, 0x04},
1723 			{SYS_DEMOD_CTL1,         0x00, 0x08},
1724 			{USB_CTRL,               0x20, 0x20},
1725 			{SYS_GPIO_DIR,           0x00, 0x08},
1726 			{SYS_GPIO_OUT_EN,        0x08, 0x08},
1727 			{SYS_GPIO_OUT_VAL,       0x08, 0x08},
1728 			{IR_MAX_DURATION0,       0xd0, 0xff},
1729 			{IR_MAX_DURATION1,       0x07, 0xff},
1730 			{IR_IDLE_LEN0,           0xc0, 0xff},
1731 			{IR_IDLE_LEN1,           0x00, 0xff},
1732 			{IR_GLITCH_LEN,          0x03, 0xff},
1733 			{IR_RX_CLK,              0x09, 0xff},
1734 			{IR_RX_CFG,              0x1c, 0xff},
1735 			{IR_MAX_H_TOL_LEN,       0x1e, 0xff},
1736 			{IR_MAX_L_TOL_LEN,       0x1e, 0xff},
1737 			{IR_RX_CTRL,             0x80, 0xff},
1738 		};
1739 
1740 		for (i = 0; i < ARRAY_SIZE(init_tab); i++) {
1741 			ret = rtl28xxu_wr_reg_mask(d, init_tab[i].reg,
1742 					init_tab[i].val, init_tab[i].mask);
1743 			if (ret)
1744 				goto err;
1745 		}
1746 
1747 		dev->rc_active = true;
1748 	}
1749 
1750 	ret = rtl28xxu_rd_reg(d, IR_RX_IF, &buf[0]);
1751 	if (ret)
1752 		goto err;
1753 
1754 	if (buf[0] != 0x83)
1755 		goto exit;
1756 
1757 	ret = rtl28xxu_rd_reg(d, IR_RX_BC, &buf[0]);
1758 	if (ret || buf[0] > sizeof(buf))
1759 		goto err;
1760 
1761 	len = buf[0];
1762 
1763 	/* read raw code from hw */
1764 	ret = rtl28xxu_rd_regs(d, IR_RX_BUF, buf, len);
1765 	if (ret)
1766 		goto err;
1767 
1768 	/* let hw receive new code */
1769 	for (i = 0; i < ARRAY_SIZE(refresh_tab); i++) {
1770 		ret = rtl28xxu_wr_reg_mask(d, refresh_tab[i].reg,
1771 				refresh_tab[i].val, refresh_tab[i].mask);
1772 		if (ret)
1773 			goto err;
1774 	}
1775 
1776 	/* pass data to Kernel IR decoder */
1777 	for (i = 0; i < len; i++) {
1778 		ev.pulse = buf[i] >> 7;
1779 		ev.duration = 50800 * (buf[i] & 0x7f);
1780 		ir_raw_event_store_with_filter(d->rc_dev, &ev);
1781 	}
1782 
1783 	/* 'flush' ir_raw_event_store_with_filter() */
1784 	ir_raw_event_set_idle(d->rc_dev, true);
1785 	ir_raw_event_handle(d->rc_dev);
1786 exit:
1787 	return ret;
1788 err:
1789 	dev_dbg(&d->intf->dev, "failed=%d\n", ret);
1790 	return ret;
1791 }
1792 
1793 static int rtl2832u_get_rc_config(struct dvb_usb_device *d,
1794 		struct dvb_usb_rc *rc)
1795 {
1796 	/* disable IR interrupts in order to avoid SDR sample loss */
1797 	if (rtl28xxu_disable_rc)
1798 		return rtl28xxu_wr_reg(d, IR_RX_IE, 0x00);
1799 
1800 	/* load empty to enable rc */
1801 	if (!rc->map_name)
1802 		rc->map_name = RC_MAP_EMPTY;
1803 	rc->allowed_protos = RC_PROTO_BIT_ALL_IR_DECODER;
1804 	rc->driver_type = RC_DRIVER_IR_RAW;
1805 	rc->query = rtl2832u_rc_query;
1806 	rc->interval = 200;
1807 
1808 	return 0;
1809 }
1810 
1811 static int rtl28xxu_get_rc_config(struct dvb_usb_device *d,
1812 		struct dvb_usb_rc *rc)
1813 {
1814 	struct rtl28xxu_dev *dev = d_to_priv(d);
1815 
1816 	if (dev->chip_id == CHIP_ID_RTL2831U)
1817 		return rtl2831u_get_rc_config(d, rc);
1818 	else
1819 		return rtl2832u_get_rc_config(d, rc);
1820 }
1821 #else
1822 #define rtl28xxu_get_rc_config NULL
1823 #endif
1824 
1825 static int rtl28xxu_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
1826 {
1827 	struct rtl28xxu_dev *dev = adap_to_priv(adap);
1828 
1829 	if (dev->chip_id == CHIP_ID_RTL2831U) {
1830 		struct rtl2830_platform_data *pdata = &dev->rtl2830_platform_data;
1831 
1832 		return pdata->pid_filter_ctrl(adap->fe[0], onoff);
1833 	} else {
1834 		struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
1835 
1836 		return pdata->pid_filter_ctrl(adap->fe[0], onoff);
1837 	}
1838 }
1839 
1840 static int rtl28xxu_pid_filter(struct dvb_usb_adapter *adap, int index,
1841 			       u16 pid, int onoff)
1842 {
1843 	struct rtl28xxu_dev *dev = adap_to_priv(adap);
1844 
1845 	if (dev->chip_id == CHIP_ID_RTL2831U) {
1846 		struct rtl2830_platform_data *pdata = &dev->rtl2830_platform_data;
1847 
1848 		return pdata->pid_filter(adap->fe[0], index, pid, onoff);
1849 	} else {
1850 		struct rtl2832_platform_data *pdata = &dev->rtl2832_platform_data;
1851 
1852 		return pdata->pid_filter(adap->fe[0], index, pid, onoff);
1853 	}
1854 }
1855 
1856 static const struct dvb_usb_device_properties rtl28xxu_props = {
1857 	.driver_name = KBUILD_MODNAME,
1858 	.owner = THIS_MODULE,
1859 	.adapter_nr = adapter_nr,
1860 	.size_of_priv = sizeof(struct rtl28xxu_dev),
1861 
1862 	.identify_state = rtl28xxu_identify_state,
1863 	.power_ctrl = rtl28xxu_power_ctrl,
1864 	.frontend_ctrl = rtl28xxu_frontend_ctrl,
1865 	.i2c_algo = &rtl28xxu_i2c_algo,
1866 	.read_config = rtl28xxu_read_config,
1867 	.frontend_attach = rtl28xxu_frontend_attach,
1868 	.frontend_detach = rtl28xxu_frontend_detach,
1869 	.tuner_attach = rtl28xxu_tuner_attach,
1870 	.tuner_detach = rtl28xxu_tuner_detach,
1871 	.init = rtl28xxu_init,
1872 	.get_rc_config = rtl28xxu_get_rc_config,
1873 
1874 	.num_adapters = 1,
1875 	.adapter = {
1876 		{
1877 			.caps = DVB_USB_ADAP_HAS_PID_FILTER |
1878 				DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
1879 
1880 			.pid_filter_count = 32,
1881 			.pid_filter_ctrl = rtl28xxu_pid_filter_ctrl,
1882 			.pid_filter = rtl28xxu_pid_filter,
1883 
1884 			.stream = DVB_USB_STREAM_BULK(0x81, 6, 8 * 512),
1885 		},
1886 	},
1887 };
1888 
1889 static const struct usb_device_id rtl28xxu_id_table[] = {
1890 	/* RTL2831U devices: */
1891 	{ DVB_USB_DEVICE(USB_VID_REALTEK, USB_PID_REALTEK_RTL2831U,
1892 		&rtl28xxu_props, "Realtek RTL2831U reference design", NULL) },
1893 	{ DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT,
1894 		&rtl28xxu_props, "Freecom USB2.0 DVB-T", NULL) },
1895 	{ DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT_2,
1896 		&rtl28xxu_props, "Freecom USB2.0 DVB-T", NULL) },
1897 
1898 	/* RTL2832U devices: */
1899 	{ DVB_USB_DEVICE(USB_VID_REALTEK, 0x2832,
1900 		&rtl28xxu_props, "Realtek RTL2832U reference design", NULL) },
1901 	{ DVB_USB_DEVICE(USB_VID_REALTEK, 0x2838,
1902 		&rtl28xxu_props, "Realtek RTL2832U reference design", NULL) },
1903 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK_BLACK_REV1,
1904 		&rtl28xxu_props, "TerraTec Cinergy T Stick Black", RC_MAP_TERRATEC_SLIM) },
1905 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_DELOCK_USB2_DVBT,
1906 		&rtl28xxu_props, "G-Tek Electronics Group Lifeview LV5TDLX DVB-T", NULL) },
1907 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK,
1908 		&rtl28xxu_props, "TerraTec NOXON DAB Stick", NULL) },
1909 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK_REV2,
1910 		&rtl28xxu_props, "TerraTec NOXON DAB Stick (rev 2)", NULL) },
1911 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK_REV3,
1912 		&rtl28xxu_props, "TerraTec NOXON DAB Stick (rev 3)", NULL) },
1913 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_TREKSTOR_TERRES_2_0,
1914 		&rtl28xxu_props, "Trekstor DVB-T Stick Terres 2.0", NULL) },
1915 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1101,
1916 		&rtl28xxu_props, "Dexatek DK DVB-T Dongle", NULL) },
1917 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6680,
1918 		&rtl28xxu_props, "DigitalNow Quad DVB-T Receiver", NULL) },
1919 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV_DONGLE_MINID,
1920 		&rtl28xxu_props, "Leadtek Winfast DTV Dongle Mini D", NULL) },
1921 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV2000DS_PLUS,
1922 		&rtl28xxu_props, "Leadtek WinFast DTV2000DS Plus", RC_MAP_LEADTEK_Y04G0051) },
1923 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d3,
1924 		&rtl28xxu_props, "TerraTec Cinergy T Stick RC (Rev. 3)", NULL) },
1925 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1102,
1926 		&rtl28xxu_props, "Dexatek DK mini DVB-T Dongle", NULL) },
1927 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d7,
1928 		&rtl28xxu_props, "TerraTec Cinergy T Stick+", NULL) },
1929 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd3a8,
1930 		&rtl28xxu_props, "ASUS My Cinema-U3100Mini Plus V2", NULL) },
1931 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd393,
1932 		&rtl28xxu_props, "GIGABYTE U7300", NULL) },
1933 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1104,
1934 		&rtl28xxu_props, "MSI DIGIVOX Micro HD", NULL) },
1935 	{ DVB_USB_DEVICE(USB_VID_COMPRO, 0x0620,
1936 		&rtl28xxu_props, "Compro VideoMate U620F", NULL) },
1937 	{ DVB_USB_DEVICE(USB_VID_COMPRO, 0x0650,
1938 		&rtl28xxu_props, "Compro VideoMate U650F", NULL) },
1939 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd394,
1940 		&rtl28xxu_props, "MaxMedia HU394-T", NULL) },
1941 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6a03,
1942 		&rtl28xxu_props, "Leadtek WinFast DTV Dongle mini", NULL) },
1943 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_CPYTO_REDI_PC50A,
1944 		&rtl28xxu_props, "Crypto ReDi PC 50 A", NULL) },
1945 	{ DVB_USB_DEVICE(USB_VID_KYE, 0x707f,
1946 		&rtl28xxu_props, "Genius TVGo DVB-T03", NULL) },
1947 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd395,
1948 		&rtl28xxu_props, "Peak DVB-T USB", NULL) },
1949 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV20_RTL2832U,
1950 		&rtl28xxu_props, "Sveon STV20", NULL) },
1951 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV21,
1952 		&rtl28xxu_props, "Sveon STV21", NULL) },
1953 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV27,
1954 		&rtl28xxu_props, "Sveon STV27", NULL) },
1955 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_TURBOX_DTT_2000,
1956 		&rtl28xxu_props, "TURBO-X Pure TV Tuner DTT-2000", NULL) },
1957 
1958 	/* RTL2832P devices: */
1959 	{ DVB_USB_DEVICE(USB_VID_HANFTEK, 0x0131,
1960 		&rtl28xxu_props, "Astrometa DVB-T2", NULL) },
1961 	{ DVB_USB_DEVICE(0x5654, 0xca42,
1962 		&rtl28xxu_props, "GoTView MasterHD 3", NULL) },
1963 	{ }
1964 };
1965 MODULE_DEVICE_TABLE(usb, rtl28xxu_id_table);
1966 
1967 static struct usb_driver rtl28xxu_usb_driver = {
1968 	.name = KBUILD_MODNAME,
1969 	.id_table = rtl28xxu_id_table,
1970 	.probe = dvb_usbv2_probe,
1971 	.disconnect = dvb_usbv2_disconnect,
1972 	.suspend = dvb_usbv2_suspend,
1973 	.resume = dvb_usbv2_resume,
1974 	.reset_resume = dvb_usbv2_reset_resume,
1975 	.no_dynamic_id = 1,
1976 	.soft_unbind = 1,
1977 };
1978 
1979 module_usb_driver(rtl28xxu_usb_driver);
1980 
1981 MODULE_DESCRIPTION("Realtek RTL28xxU DVB USB driver");
1982 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1983 MODULE_AUTHOR("Thomas Mair <thomas.mair86@googlemail.com>");
1984 MODULE_LICENSE("GPL");
1985