1 /*
2  * Realtek RTL28xxU DVB USB driver
3  *
4  * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
5  * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
6  * Copyright (C) 2012 Thomas Mair <thomas.mair86@googlemail.com>
7  *
8  *    This program is free software; you can redistribute it and/or modify
9  *    it under the terms of the GNU General Public License as published by
10  *    the Free Software Foundation; either version 2 of the License, or
11  *    (at your option) any later version.
12  *
13  *    This program is distributed in the hope that it will be useful,
14  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
15  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  *    GNU General Public License for more details.
17  *
18  *    You should have received a copy of the GNU General Public License along
19  *    with this program; if not, write to the Free Software Foundation, Inc.,
20  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21  */
22 
23 #include "rtl28xxu.h"
24 
25 #include "rtl2830.h"
26 #include "rtl2832.h"
27 #include "rtl2832_sdr.h"
28 #include "mn88472.h"
29 #include "mn88473.h"
30 
31 #include "qt1010.h"
32 #include "mt2060.h"
33 #include "mxl5005s.h"
34 #include "fc0012.h"
35 #include "fc0013.h"
36 #include "e4000.h"
37 #include "fc2580.h"
38 #include "tua9001.h"
39 #include "r820t.h"
40 
41 
42 #ifdef CONFIG_MEDIA_ATTACH
43 #define dvb_attach_sdr(FUNCTION, ARGS...) ({ \
44 	void *__r = NULL; \
45 	typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
46 	if (__a) { \
47 		__r = (void *) __a(ARGS); \
48 		if (__r == NULL) \
49 			symbol_put(FUNCTION); \
50 	} \
51 	__r; \
52 })
53 
54 #else
55 #define dvb_attach_sdr(FUNCTION, ARGS...) ({ \
56 	FUNCTION(ARGS); \
57 })
58 
59 #endif
60 
61 static int rtl28xxu_disable_rc;
62 module_param_named(disable_rc, rtl28xxu_disable_rc, int, 0644);
63 MODULE_PARM_DESC(disable_rc, "disable RTL2832U remote controller");
64 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
65 
66 static int rtl28xxu_ctrl_msg(struct dvb_usb_device *d, struct rtl28xxu_req *req)
67 {
68 	int ret;
69 	unsigned int pipe;
70 	u8 requesttype;
71 	u8 *buf;
72 
73 	buf = kmalloc(req->size, GFP_KERNEL);
74 	if (!buf) {
75 		ret = -ENOMEM;
76 		goto err;
77 	}
78 
79 	if (req->index & CMD_WR_FLAG) {
80 		/* write */
81 		memcpy(buf, req->data, req->size);
82 		requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
83 		pipe = usb_sndctrlpipe(d->udev, 0);
84 	} else {
85 		/* read */
86 		requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
87 		pipe = usb_rcvctrlpipe(d->udev, 0);
88 	}
89 
90 	ret = usb_control_msg(d->udev, pipe, 0, requesttype, req->value,
91 			req->index, buf, req->size, 1000);
92 
93 	dvb_usb_dbg_usb_control_msg(d->udev, 0, requesttype, req->value,
94 			req->index, buf, req->size);
95 
96 	if (ret > 0)
97 		ret = 0;
98 
99 	/* read request, copy returned data to return buf */
100 	if (!ret && requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
101 		memcpy(req->data, buf, req->size);
102 
103 	kfree(buf);
104 
105 	if (ret)
106 		goto err;
107 
108 	return ret;
109 err:
110 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
111 	return ret;
112 }
113 
114 static int rtl28xx_wr_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
115 {
116 	struct rtl28xxu_req req;
117 
118 	if (reg < 0x3000)
119 		req.index = CMD_USB_WR;
120 	else if (reg < 0x4000)
121 		req.index = CMD_SYS_WR;
122 	else
123 		req.index = CMD_IR_WR;
124 
125 	req.value = reg;
126 	req.size = len;
127 	req.data = val;
128 
129 	return rtl28xxu_ctrl_msg(d, &req);
130 }
131 
132 static int rtl2831_rd_regs(struct dvb_usb_device *d, u16 reg, u8 *val, int len)
133 {
134 	struct rtl28xxu_req req;
135 
136 	if (reg < 0x3000)
137 		req.index = CMD_USB_RD;
138 	else if (reg < 0x4000)
139 		req.index = CMD_SYS_RD;
140 	else
141 		req.index = CMD_IR_RD;
142 
143 	req.value = reg;
144 	req.size = len;
145 	req.data = val;
146 
147 	return rtl28xxu_ctrl_msg(d, &req);
148 }
149 
150 static int rtl28xx_wr_reg(struct dvb_usb_device *d, u16 reg, u8 val)
151 {
152 	return rtl28xx_wr_regs(d, reg, &val, 1);
153 }
154 
155 static int rtl28xx_rd_reg(struct dvb_usb_device *d, u16 reg, u8 *val)
156 {
157 	return rtl2831_rd_regs(d, reg, val, 1);
158 }
159 
160 static int rtl28xx_wr_reg_mask(struct dvb_usb_device *d, u16 reg, u8 val,
161 		u8 mask)
162 {
163 	int ret;
164 	u8 tmp;
165 
166 	/* no need for read if whole reg is written */
167 	if (mask != 0xff) {
168 		ret = rtl28xx_rd_reg(d, reg, &tmp);
169 		if (ret)
170 			return ret;
171 
172 		val &= mask;
173 		tmp &= ~mask;
174 		val |= tmp;
175 	}
176 
177 	return rtl28xx_wr_reg(d, reg, val);
178 }
179 
180 /* I2C */
181 static int rtl28xxu_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
182 	int num)
183 {
184 	int ret;
185 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
186 	struct rtl28xxu_priv *priv = d->priv;
187 	struct rtl28xxu_req req;
188 
189 	/*
190 	 * It is not known which are real I2C bus xfer limits, but testing
191 	 * with RTL2831U + MT2060 gives max RD 24 and max WR 22 bytes.
192 	 * TODO: find out RTL2832U lens
193 	 */
194 
195 	/*
196 	 * I2C adapter logic looks rather complicated due to fact it handles
197 	 * three different access methods. Those methods are;
198 	 * 1) integrated demod access
199 	 * 2) old I2C access
200 	 * 3) new I2C access
201 	 *
202 	 * Used method is selected in order 1, 2, 3. Method 3 can handle all
203 	 * requests but there is two reasons why not use it always;
204 	 * 1) It is most expensive, usually two USB messages are needed
205 	 * 2) At least RTL2831U does not support it
206 	 *
207 	 * Method 3 is needed in case of I2C write+read (typical register read)
208 	 * where write is more than one byte.
209 	 */
210 
211 	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
212 		return -EAGAIN;
213 
214 	if (num == 2 && !(msg[0].flags & I2C_M_RD) &&
215 		(msg[1].flags & I2C_M_RD)) {
216 		if (msg[0].len > 24 || msg[1].len > 24) {
217 			/* TODO: check msg[0].len max */
218 			ret = -EOPNOTSUPP;
219 			goto err_mutex_unlock;
220 		} else if (msg[0].addr == 0x10) {
221 			/* method 1 - integrated demod */
222 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
223 			req.index = CMD_DEMOD_RD | priv->page;
224 			req.size = msg[1].len;
225 			req.data = &msg[1].buf[0];
226 			ret = rtl28xxu_ctrl_msg(d, &req);
227 		} else if (msg[0].len < 2) {
228 			/* method 2 - old I2C */
229 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
230 			req.index = CMD_I2C_RD;
231 			req.size = msg[1].len;
232 			req.data = &msg[1].buf[0];
233 			ret = rtl28xxu_ctrl_msg(d, &req);
234 		} else {
235 			/* method 3 - new I2C */
236 			req.value = (msg[0].addr << 1);
237 			req.index = CMD_I2C_DA_WR;
238 			req.size = msg[0].len;
239 			req.data = msg[0].buf;
240 			ret = rtl28xxu_ctrl_msg(d, &req);
241 			if (ret)
242 				goto err_mutex_unlock;
243 
244 			req.value = (msg[0].addr << 1);
245 			req.index = CMD_I2C_DA_RD;
246 			req.size = msg[1].len;
247 			req.data = msg[1].buf;
248 			ret = rtl28xxu_ctrl_msg(d, &req);
249 		}
250 	} else if (num == 1 && !(msg[0].flags & I2C_M_RD)) {
251 		if (msg[0].len > 22) {
252 			/* TODO: check msg[0].len max */
253 			ret = -EOPNOTSUPP;
254 			goto err_mutex_unlock;
255 		} else if (msg[0].addr == 0x10) {
256 			/* method 1 - integrated demod */
257 			if (msg[0].buf[0] == 0x00) {
258 				/* save demod page for later demod access */
259 				priv->page = msg[0].buf[1];
260 				ret = 0;
261 			} else {
262 				req.value = (msg[0].buf[0] << 8) |
263 					(msg[0].addr << 1);
264 				req.index = CMD_DEMOD_WR | priv->page;
265 				req.size = msg[0].len-1;
266 				req.data = &msg[0].buf[1];
267 				ret = rtl28xxu_ctrl_msg(d, &req);
268 			}
269 		} else if (msg[0].len < 23) {
270 			/* method 2 - old I2C */
271 			req.value = (msg[0].buf[0] << 8) | (msg[0].addr << 1);
272 			req.index = CMD_I2C_WR;
273 			req.size = msg[0].len-1;
274 			req.data = &msg[0].buf[1];
275 			ret = rtl28xxu_ctrl_msg(d, &req);
276 		} else {
277 			/* method 3 - new I2C */
278 			req.value = (msg[0].addr << 1);
279 			req.index = CMD_I2C_DA_WR;
280 			req.size = msg[0].len;
281 			req.data = msg[0].buf;
282 			ret = rtl28xxu_ctrl_msg(d, &req);
283 		}
284 	} else {
285 		ret = -EINVAL;
286 	}
287 
288 err_mutex_unlock:
289 	mutex_unlock(&d->i2c_mutex);
290 
291 	return ret ? ret : num;
292 }
293 
294 static u32 rtl28xxu_i2c_func(struct i2c_adapter *adapter)
295 {
296 	return I2C_FUNC_I2C;
297 }
298 
299 static struct i2c_algorithm rtl28xxu_i2c_algo = {
300 	.master_xfer   = rtl28xxu_i2c_xfer,
301 	.functionality = rtl28xxu_i2c_func,
302 };
303 
304 static int rtl2831u_read_config(struct dvb_usb_device *d)
305 {
306 	struct rtl28xxu_priv *priv = d_to_priv(d);
307 	int ret;
308 	u8 buf[1];
309 	/* open RTL2831U/RTL2830 I2C gate */
310 	struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x08"};
311 	/* tuner probes */
312 	struct rtl28xxu_req req_mt2060 = {0x00c0, CMD_I2C_RD, 1, buf};
313 	struct rtl28xxu_req req_qt1010 = {0x0fc4, CMD_I2C_RD, 1, buf};
314 
315 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
316 
317 	/*
318 	 * RTL2831U GPIOs
319 	 * =========================================================
320 	 * GPIO0 | tuner#0 | 0 off | 1 on  | MXL5005S (?)
321 	 * GPIO2 | LED     | 0 off | 1 on  |
322 	 * GPIO4 | tuner#1 | 0 on  | 1 off | MT2060
323 	 */
324 
325 	/* GPIO direction */
326 	ret = rtl28xx_wr_reg(d, SYS_GPIO_DIR, 0x0a);
327 	if (ret)
328 		goto err;
329 
330 	/* enable as output GPIO0, GPIO2, GPIO4 */
331 	ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_EN, 0x15);
332 	if (ret)
333 		goto err;
334 
335 	/*
336 	 * Probe used tuner. We need to know used tuner before demod attach
337 	 * since there is some demod params needed to set according to tuner.
338 	 */
339 
340 	/* demod needs some time to wake up */
341 	msleep(20);
342 
343 	priv->tuner_name = "NONE";
344 
345 	/* open demod I2C gate */
346 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
347 	if (ret)
348 		goto err;
349 
350 	/* check QT1010 ID(?) register; reg=0f val=2c */
351 	ret = rtl28xxu_ctrl_msg(d, &req_qt1010);
352 	if (ret == 0 && buf[0] == 0x2c) {
353 		priv->tuner = TUNER_RTL2830_QT1010;
354 		priv->tuner_name = "QT1010";
355 		goto found;
356 	}
357 
358 	/* open demod I2C gate */
359 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
360 	if (ret)
361 		goto err;
362 
363 	/* check MT2060 ID register; reg=00 val=63 */
364 	ret = rtl28xxu_ctrl_msg(d, &req_mt2060);
365 	if (ret == 0 && buf[0] == 0x63) {
366 		priv->tuner = TUNER_RTL2830_MT2060;
367 		priv->tuner_name = "MT2060";
368 		goto found;
369 	}
370 
371 	/* assume MXL5005S */
372 	priv->tuner = TUNER_RTL2830_MXL5005S;
373 	priv->tuner_name = "MXL5005S";
374 	goto found;
375 
376 found:
377 	dev_dbg(&d->udev->dev, "%s: tuner=%s\n", __func__, priv->tuner_name);
378 
379 	return 0;
380 err:
381 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
382 	return ret;
383 }
384 
385 static int rtl2832u_read_config(struct dvb_usb_device *d)
386 {
387 	struct rtl28xxu_priv *priv = d_to_priv(d);
388 	int ret;
389 	u8 buf[2];
390 	/* open RTL2832U/RTL2832 I2C gate */
391 	struct rtl28xxu_req req_gate_open = {0x0120, 0x0011, 0x0001, "\x18"};
392 	/* close RTL2832U/RTL2832 I2C gate */
393 	struct rtl28xxu_req req_gate_close = {0x0120, 0x0011, 0x0001, "\x10"};
394 	/* tuner probes */
395 	struct rtl28xxu_req req_fc0012 = {0x00c6, CMD_I2C_RD, 1, buf};
396 	struct rtl28xxu_req req_fc0013 = {0x00c6, CMD_I2C_RD, 1, buf};
397 	struct rtl28xxu_req req_mt2266 = {0x00c0, CMD_I2C_RD, 1, buf};
398 	struct rtl28xxu_req req_fc2580 = {0x01ac, CMD_I2C_RD, 1, buf};
399 	struct rtl28xxu_req req_mt2063 = {0x00c0, CMD_I2C_RD, 1, buf};
400 	struct rtl28xxu_req req_max3543 = {0x00c0, CMD_I2C_RD, 1, buf};
401 	struct rtl28xxu_req req_tua9001 = {0x7ec0, CMD_I2C_RD, 2, buf};
402 	struct rtl28xxu_req req_mxl5007t = {0xd9c0, CMD_I2C_RD, 1, buf};
403 	struct rtl28xxu_req req_e4000 = {0x02c8, CMD_I2C_RD, 1, buf};
404 	struct rtl28xxu_req req_tda18272 = {0x00c0, CMD_I2C_RD, 2, buf};
405 	struct rtl28xxu_req req_r820t = {0x0034, CMD_I2C_RD, 1, buf};
406 	struct rtl28xxu_req req_r828d = {0x0074, CMD_I2C_RD, 1, buf};
407 	struct rtl28xxu_req req_mn88472 = {0xff38, CMD_I2C_RD, 1, buf};
408 	struct rtl28xxu_req req_mn88473 = {0xff38, CMD_I2C_RD, 1, buf};
409 
410 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
411 
412 	/* enable GPIO3 and GPIO6 as output */
413 	ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x40);
414 	if (ret)
415 		goto err;
416 
417 	ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x48, 0x48);
418 	if (ret)
419 		goto err;
420 
421 	/*
422 	 * Probe used tuner. We need to know used tuner before demod attach
423 	 * since there is some demod params needed to set according to tuner.
424 	 */
425 
426 	/* open demod I2C gate */
427 	ret = rtl28xxu_ctrl_msg(d, &req_gate_open);
428 	if (ret)
429 		goto err;
430 
431 	priv->tuner_name = "NONE";
432 
433 	/* check FC0012 ID register; reg=00 val=a1 */
434 	ret = rtl28xxu_ctrl_msg(d, &req_fc0012);
435 	if (ret == 0 && buf[0] == 0xa1) {
436 		priv->tuner = TUNER_RTL2832_FC0012;
437 		priv->tuner_name = "FC0012";
438 		goto tuner_found;
439 	}
440 
441 	/* check FC0013 ID register; reg=00 val=a3 */
442 	ret = rtl28xxu_ctrl_msg(d, &req_fc0013);
443 	if (ret == 0 && buf[0] == 0xa3) {
444 		priv->tuner = TUNER_RTL2832_FC0013;
445 		priv->tuner_name = "FC0013";
446 		goto tuner_found;
447 	}
448 
449 	/* check MT2266 ID register; reg=00 val=85 */
450 	ret = rtl28xxu_ctrl_msg(d, &req_mt2266);
451 	if (ret == 0 && buf[0] == 0x85) {
452 		priv->tuner = TUNER_RTL2832_MT2266;
453 		priv->tuner_name = "MT2266";
454 		goto tuner_found;
455 	}
456 
457 	/* check FC2580 ID register; reg=01 val=56 */
458 	ret = rtl28xxu_ctrl_msg(d, &req_fc2580);
459 	if (ret == 0 && buf[0] == 0x56) {
460 		priv->tuner = TUNER_RTL2832_FC2580;
461 		priv->tuner_name = "FC2580";
462 		goto tuner_found;
463 	}
464 
465 	/* check MT2063 ID register; reg=00 val=9e || 9c */
466 	ret = rtl28xxu_ctrl_msg(d, &req_mt2063);
467 	if (ret == 0 && (buf[0] == 0x9e || buf[0] == 0x9c)) {
468 		priv->tuner = TUNER_RTL2832_MT2063;
469 		priv->tuner_name = "MT2063";
470 		goto tuner_found;
471 	}
472 
473 	/* check MAX3543 ID register; reg=00 val=38 */
474 	ret = rtl28xxu_ctrl_msg(d, &req_max3543);
475 	if (ret == 0 && buf[0] == 0x38) {
476 		priv->tuner = TUNER_RTL2832_MAX3543;
477 		priv->tuner_name = "MAX3543";
478 		goto tuner_found;
479 	}
480 
481 	/* check TUA9001 ID register; reg=7e val=2328 */
482 	ret = rtl28xxu_ctrl_msg(d, &req_tua9001);
483 	if (ret == 0 && buf[0] == 0x23 && buf[1] == 0x28) {
484 		priv->tuner = TUNER_RTL2832_TUA9001;
485 		priv->tuner_name = "TUA9001";
486 		goto tuner_found;
487 	}
488 
489 	/* check MXL5007R ID register; reg=d9 val=14 */
490 	ret = rtl28xxu_ctrl_msg(d, &req_mxl5007t);
491 	if (ret == 0 && buf[0] == 0x14) {
492 		priv->tuner = TUNER_RTL2832_MXL5007T;
493 		priv->tuner_name = "MXL5007T";
494 		goto tuner_found;
495 	}
496 
497 	/* check E4000 ID register; reg=02 val=40 */
498 	ret = rtl28xxu_ctrl_msg(d, &req_e4000);
499 	if (ret == 0 && buf[0] == 0x40) {
500 		priv->tuner = TUNER_RTL2832_E4000;
501 		priv->tuner_name = "E4000";
502 		goto tuner_found;
503 	}
504 
505 	/* check TDA18272 ID register; reg=00 val=c760  */
506 	ret = rtl28xxu_ctrl_msg(d, &req_tda18272);
507 	if (ret == 0 && (buf[0] == 0xc7 || buf[1] == 0x60)) {
508 		priv->tuner = TUNER_RTL2832_TDA18272;
509 		priv->tuner_name = "TDA18272";
510 		goto tuner_found;
511 	}
512 
513 	/* check R820T ID register; reg=00 val=69 */
514 	ret = rtl28xxu_ctrl_msg(d, &req_r820t);
515 	if (ret == 0 && buf[0] == 0x69) {
516 		priv->tuner = TUNER_RTL2832_R820T;
517 		priv->tuner_name = "R820T";
518 		goto tuner_found;
519 	}
520 
521 	/* check R828D ID register; reg=00 val=69 */
522 	ret = rtl28xxu_ctrl_msg(d, &req_r828d);
523 	if (ret == 0 && buf[0] == 0x69) {
524 		priv->tuner = TUNER_RTL2832_R828D;
525 		priv->tuner_name = "R828D";
526 		goto tuner_found;
527 	}
528 
529 tuner_found:
530 	dev_dbg(&d->udev->dev, "%s: tuner=%s\n", __func__, priv->tuner_name);
531 
532 	/* probe slave demod */
533 	if (priv->tuner == TUNER_RTL2832_R828D) {
534 		/* power on MN88472 demod on GPIO0 */
535 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x01, 0x01);
536 		if (ret)
537 			goto err;
538 
539 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x01);
540 		if (ret)
541 			goto err;
542 
543 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x01, 0x01);
544 		if (ret)
545 			goto err;
546 
547 		/* check MN88472 answers */
548 		ret = rtl28xxu_ctrl_msg(d, &req_mn88472);
549 		if (ret == 0 && buf[0] == 0x02) {
550 			dev_dbg(&d->udev->dev, "%s: MN88472 found\n", __func__);
551 			priv->slave_demod = SLAVE_DEMOD_MN88472;
552 			goto demod_found;
553 		}
554 
555 		ret = rtl28xxu_ctrl_msg(d, &req_mn88473);
556 		if (ret == 0 && buf[0] == 0x03) {
557 			dev_dbg(&d->udev->dev, "%s: MN88473 found\n", __func__);
558 			priv->slave_demod = SLAVE_DEMOD_MN88473;
559 			goto demod_found;
560 		}
561 	}
562 
563 demod_found:
564 	/* close demod I2C gate */
565 	ret = rtl28xxu_ctrl_msg(d, &req_gate_close);
566 	if (ret < 0)
567 		goto err;
568 
569 	return 0;
570 err:
571 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
572 	return ret;
573 }
574 
575 static const struct rtl2830_config rtl28xxu_rtl2830_mt2060_config = {
576 	.i2c_addr = 0x10, /* 0x20 */
577 	.xtal = 28800000,
578 	.ts_mode = 0,
579 	.spec_inv = 1,
580 	.vtop = 0x20,
581 	.krf = 0x04,
582 	.agc_targ_val = 0x2d,
583 
584 };
585 
586 static const struct rtl2830_config rtl28xxu_rtl2830_qt1010_config = {
587 	.i2c_addr = 0x10, /* 0x20 */
588 	.xtal = 28800000,
589 	.ts_mode = 0,
590 	.spec_inv = 1,
591 	.vtop = 0x20,
592 	.krf = 0x04,
593 	.agc_targ_val = 0x2d,
594 };
595 
596 static const struct rtl2830_config rtl28xxu_rtl2830_mxl5005s_config = {
597 	.i2c_addr = 0x10, /* 0x20 */
598 	.xtal = 28800000,
599 	.ts_mode = 0,
600 	.spec_inv = 0,
601 	.vtop = 0x3f,
602 	.krf = 0x04,
603 	.agc_targ_val = 0x3e,
604 };
605 
606 static int rtl2831u_frontend_attach(struct dvb_usb_adapter *adap)
607 {
608 	struct dvb_usb_device *d = adap_to_d(adap);
609 	struct rtl28xxu_priv *priv = d_to_priv(d);
610 	const struct rtl2830_config *rtl2830_config;
611 	int ret;
612 
613 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
614 
615 	switch (priv->tuner) {
616 	case TUNER_RTL2830_QT1010:
617 		rtl2830_config = &rtl28xxu_rtl2830_qt1010_config;
618 		break;
619 	case TUNER_RTL2830_MT2060:
620 		rtl2830_config = &rtl28xxu_rtl2830_mt2060_config;
621 		break;
622 	case TUNER_RTL2830_MXL5005S:
623 		rtl2830_config = &rtl28xxu_rtl2830_mxl5005s_config;
624 		break;
625 	default:
626 		dev_err(&d->udev->dev, "%s: unknown tuner=%s\n",
627 				KBUILD_MODNAME, priv->tuner_name);
628 		ret = -ENODEV;
629 		goto err;
630 	}
631 
632 	/* attach demodulator */
633 	adap->fe[0] = dvb_attach(rtl2830_attach, rtl2830_config, &d->i2c_adap);
634 	if (!adap->fe[0]) {
635 		ret = -ENODEV;
636 		goto err;
637 	}
638 
639 	return 0;
640 err:
641 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
642 	return ret;
643 }
644 
645 static const struct rtl2832_config rtl28xxu_rtl2832_fc0012_config = {
646 	.i2c_addr = 0x10, /* 0x20 */
647 	.xtal = 28800000,
648 	.tuner = TUNER_RTL2832_FC0012
649 };
650 
651 static const struct rtl2832_config rtl28xxu_rtl2832_fc0013_config = {
652 	.i2c_addr = 0x10, /* 0x20 */
653 	.xtal = 28800000,
654 	.tuner = TUNER_RTL2832_FC0013
655 };
656 
657 static const struct rtl2832_config rtl28xxu_rtl2832_tua9001_config = {
658 	.i2c_addr = 0x10, /* 0x20 */
659 	.xtal = 28800000,
660 	.tuner = TUNER_RTL2832_TUA9001,
661 };
662 
663 static const struct rtl2832_config rtl28xxu_rtl2832_e4000_config = {
664 	.i2c_addr = 0x10, /* 0x20 */
665 	.xtal = 28800000,
666 	.tuner = TUNER_RTL2832_E4000,
667 };
668 
669 static const struct rtl2832_config rtl28xxu_rtl2832_r820t_config = {
670 	.i2c_addr = 0x10,
671 	.xtal = 28800000,
672 	.tuner = TUNER_RTL2832_R820T,
673 };
674 
675 static int rtl2832u_fc0012_tuner_callback(struct dvb_usb_device *d,
676 		int cmd, int arg)
677 {
678 	int ret;
679 	u8 val;
680 
681 	dev_dbg(&d->udev->dev, "%s: cmd=%d arg=%d\n", __func__, cmd, arg);
682 
683 	switch (cmd) {
684 	case FC_FE_CALLBACK_VHF_ENABLE:
685 		/* set output values */
686 		ret = rtl28xx_rd_reg(d, SYS_GPIO_OUT_VAL, &val);
687 		if (ret)
688 			goto err;
689 
690 		if (arg)
691 			val &= 0xbf; /* set GPIO6 low */
692 		else
693 			val |= 0x40; /* set GPIO6 high */
694 
695 
696 		ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_VAL, val);
697 		if (ret)
698 			goto err;
699 		break;
700 	default:
701 		ret = -EINVAL;
702 		goto err;
703 	}
704 	return 0;
705 err:
706 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
707 	return ret;
708 }
709 
710 static int rtl2832u_tua9001_tuner_callback(struct dvb_usb_device *d,
711 		int cmd, int arg)
712 {
713 	int ret;
714 	u8 val;
715 
716 	dev_dbg(&d->udev->dev, "%s: cmd=%d arg=%d\n", __func__, cmd, arg);
717 
718 	/*
719 	 * CEN     always enabled by hardware wiring
720 	 * RESETN  GPIO4
721 	 * RXEN    GPIO1
722 	 */
723 
724 	switch (cmd) {
725 	case TUA9001_CMD_RESETN:
726 		if (arg)
727 			val = (1 << 4);
728 		else
729 			val = (0 << 4);
730 
731 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x10);
732 		if (ret)
733 			goto err;
734 		break;
735 	case TUA9001_CMD_RXEN:
736 		if (arg)
737 			val = (1 << 1);
738 		else
739 			val = (0 << 1);
740 
741 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_VAL, val, 0x02);
742 		if (ret)
743 			goto err;
744 		break;
745 	}
746 
747 	return 0;
748 err:
749 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
750 	return ret;
751 }
752 
753 static int rtl2832u_tuner_callback(struct dvb_usb_device *d, int cmd, int arg)
754 {
755 	struct rtl28xxu_priv *priv = d->priv;
756 
757 	switch (priv->tuner) {
758 	case TUNER_RTL2832_FC0012:
759 		return rtl2832u_fc0012_tuner_callback(d, cmd, arg);
760 	case TUNER_RTL2832_TUA9001:
761 		return rtl2832u_tua9001_tuner_callback(d, cmd, arg);
762 	default:
763 		break;
764 	}
765 
766 	return 0;
767 }
768 
769 static int rtl2832u_frontend_callback(void *adapter_priv, int component,
770 		int cmd, int arg)
771 {
772 	struct i2c_adapter *adap = adapter_priv;
773 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
774 
775 	dev_dbg(&d->udev->dev, "%s: component=%d cmd=%d arg=%d\n",
776 			__func__, component, cmd, arg);
777 
778 	switch (component) {
779 	case DVB_FRONTEND_COMPONENT_TUNER:
780 		return rtl2832u_tuner_callback(d, cmd, arg);
781 	default:
782 		break;
783 	}
784 
785 	return 0;
786 }
787 
788 static int rtl2832u_frontend_attach(struct dvb_usb_adapter *adap)
789 {
790 	int ret;
791 	struct dvb_usb_device *d = adap_to_d(adap);
792 	struct rtl28xxu_priv *priv = d_to_priv(d);
793 	const struct rtl2832_config *rtl2832_config;
794 
795 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
796 
797 	switch (priv->tuner) {
798 	case TUNER_RTL2832_FC0012:
799 		rtl2832_config = &rtl28xxu_rtl2832_fc0012_config;
800 		break;
801 	case TUNER_RTL2832_FC0013:
802 		rtl2832_config = &rtl28xxu_rtl2832_fc0013_config;
803 		break;
804 	case TUNER_RTL2832_FC2580:
805 		/* FIXME: do not abuse fc0012 settings */
806 		rtl2832_config = &rtl28xxu_rtl2832_fc0012_config;
807 		break;
808 	case TUNER_RTL2832_TUA9001:
809 		rtl2832_config = &rtl28xxu_rtl2832_tua9001_config;
810 		break;
811 	case TUNER_RTL2832_E4000:
812 		rtl2832_config = &rtl28xxu_rtl2832_e4000_config;
813 		break;
814 	case TUNER_RTL2832_R820T:
815 	case TUNER_RTL2832_R828D:
816 		rtl2832_config = &rtl28xxu_rtl2832_r820t_config;
817 		break;
818 	default:
819 		dev_err(&d->udev->dev, "%s: unknown tuner=%s\n",
820 				KBUILD_MODNAME, priv->tuner_name);
821 		ret = -ENODEV;
822 		goto err;
823 	}
824 
825 	/* attach demodulator */
826 	adap->fe[0] = dvb_attach(rtl2832_attach, rtl2832_config, &d->i2c_adap);
827 	if (!adap->fe[0]) {
828 		ret = -ENODEV;
829 		goto err;
830 	}
831 
832 	/* RTL2832 I2C repeater */
833 	priv->demod_i2c_adapter = rtl2832_get_i2c_adapter(adap->fe[0]);
834 
835 	/* set fe callback */
836 	adap->fe[0]->callback = rtl2832u_frontend_callback;
837 
838 	if (priv->slave_demod) {
839 		struct i2c_board_info info = {};
840 		struct i2c_client *client;
841 
842 		/*
843 		 * We continue on reduced mode, without DVB-T2/C, using master
844 		 * demod, when slave demod fails.
845 		 */
846 		ret = 0;
847 
848 		/* attach slave demodulator */
849 		if (priv->slave_demod == SLAVE_DEMOD_MN88472) {
850 			struct mn88472_config mn88472_config = {};
851 
852 			mn88472_config.fe = &adap->fe[1];
853 			mn88472_config.i2c_wr_max = 22,
854 			strlcpy(info.type, "mn88472", I2C_NAME_SIZE);
855 			info.addr = 0x18;
856 			info.platform_data = &mn88472_config;
857 			request_module(info.type);
858 			client = i2c_new_device(priv->demod_i2c_adapter, &info);
859 			if (client == NULL || client->dev.driver == NULL) {
860 				priv->slave_demod = SLAVE_DEMOD_NONE;
861 				goto err_slave_demod_failed;
862 			}
863 
864 			if (!try_module_get(client->dev.driver->owner)) {
865 				i2c_unregister_device(client);
866 				priv->slave_demod = SLAVE_DEMOD_NONE;
867 				goto err_slave_demod_failed;
868 			}
869 
870 			priv->i2c_client_slave_demod = client;
871 		} else {
872 			struct mn88473_config mn88473_config = {};
873 
874 			mn88473_config.fe = &adap->fe[1];
875 			mn88473_config.i2c_wr_max = 22,
876 			strlcpy(info.type, "mn88473", I2C_NAME_SIZE);
877 			info.addr = 0x18;
878 			info.platform_data = &mn88473_config;
879 			request_module(info.type);
880 			client = i2c_new_device(priv->demod_i2c_adapter, &info);
881 			if (client == NULL || client->dev.driver == NULL) {
882 				priv->slave_demod = SLAVE_DEMOD_NONE;
883 				goto err_slave_demod_failed;
884 			}
885 
886 			if (!try_module_get(client->dev.driver->owner)) {
887 				i2c_unregister_device(client);
888 				priv->slave_demod = SLAVE_DEMOD_NONE;
889 				goto err_slave_demod_failed;
890 			}
891 
892 			priv->i2c_client_slave_demod = client;
893 		}
894 	}
895 
896 	return 0;
897 err_slave_demod_failed:
898 err:
899 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
900 	return ret;
901 }
902 
903 static struct qt1010_config rtl28xxu_qt1010_config = {
904 	.i2c_address = 0x62, /* 0xc4 */
905 };
906 
907 static struct mt2060_config rtl28xxu_mt2060_config = {
908 	.i2c_address = 0x60, /* 0xc0 */
909 	.clock_out = 0,
910 };
911 
912 static struct mxl5005s_config rtl28xxu_mxl5005s_config = {
913 	.i2c_address     = 0x63, /* 0xc6 */
914 	.if_freq         = IF_FREQ_4570000HZ,
915 	.xtal_freq       = CRYSTAL_FREQ_16000000HZ,
916 	.agc_mode        = MXL_SINGLE_AGC,
917 	.tracking_filter = MXL_TF_C_H,
918 	.rssi_enable     = MXL_RSSI_ENABLE,
919 	.cap_select      = MXL_CAP_SEL_ENABLE,
920 	.div_out         = MXL_DIV_OUT_4,
921 	.clock_out       = MXL_CLOCK_OUT_DISABLE,
922 	.output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
923 	.top		 = MXL5005S_TOP_25P2,
924 	.mod_mode        = MXL_DIGITAL_MODE,
925 	.if_mode         = MXL_ZERO_IF,
926 	.AgcMasterByte   = 0x00,
927 };
928 
929 static int rtl2831u_tuner_attach(struct dvb_usb_adapter *adap)
930 {
931 	int ret;
932 	struct dvb_usb_device *d = adap_to_d(adap);
933 	struct rtl28xxu_priv *priv = d_to_priv(d);
934 	struct i2c_adapter *rtl2830_tuner_i2c;
935 	struct dvb_frontend *fe;
936 
937 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
938 
939 	/* use rtl2830 driver I2C adapter, for more info see rtl2830 driver */
940 	rtl2830_tuner_i2c = rtl2830_get_tuner_i2c_adapter(adap->fe[0]);
941 
942 	switch (priv->tuner) {
943 	case TUNER_RTL2830_QT1010:
944 		fe = dvb_attach(qt1010_attach, adap->fe[0],
945 				rtl2830_tuner_i2c, &rtl28xxu_qt1010_config);
946 		break;
947 	case TUNER_RTL2830_MT2060:
948 		fe = dvb_attach(mt2060_attach, adap->fe[0],
949 				rtl2830_tuner_i2c, &rtl28xxu_mt2060_config,
950 				1220);
951 		break;
952 	case TUNER_RTL2830_MXL5005S:
953 		fe = dvb_attach(mxl5005s_attach, adap->fe[0],
954 				rtl2830_tuner_i2c, &rtl28xxu_mxl5005s_config);
955 		break;
956 	default:
957 		fe = NULL;
958 		dev_err(&d->udev->dev, "%s: unknown tuner=%d\n", KBUILD_MODNAME,
959 				priv->tuner);
960 	}
961 
962 	if (fe == NULL) {
963 		ret = -ENODEV;
964 		goto err;
965 	}
966 
967 	return 0;
968 err:
969 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
970 	return ret;
971 }
972 
973 static const struct fc2580_config rtl2832u_fc2580_config = {
974 	.i2c_addr = 0x56,
975 	.clock = 16384000,
976 };
977 
978 static struct tua9001_config rtl2832u_tua9001_config = {
979 	.i2c_addr = 0x60,
980 };
981 
982 static const struct fc0012_config rtl2832u_fc0012_config = {
983 	.i2c_address = 0x63, /* 0xc6 >> 1 */
984 	.xtal_freq = FC_XTAL_28_8_MHZ,
985 };
986 
987 static const struct r820t_config rtl2832u_r820t_config = {
988 	.i2c_addr = 0x1a,
989 	.xtal = 28800000,
990 	.max_i2c_msg_len = 2,
991 	.rafael_chip = CHIP_R820T,
992 };
993 
994 static const struct r820t_config rtl2832u_r828d_config = {
995 	.i2c_addr = 0x3a,
996 	.xtal = 16000000,
997 	.max_i2c_msg_len = 2,
998 	.rafael_chip = CHIP_R828D,
999 };
1000 
1001 static int rtl2832u_tuner_attach(struct dvb_usb_adapter *adap)
1002 {
1003 	int ret;
1004 	struct dvb_usb_device *d = adap_to_d(adap);
1005 	struct rtl28xxu_priv *priv = d_to_priv(d);
1006 	struct dvb_frontend *fe = NULL;
1007 	struct i2c_board_info info;
1008 	struct i2c_client *client;
1009 
1010 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
1011 
1012 	memset(&info, 0, sizeof(struct i2c_board_info));
1013 
1014 	switch (priv->tuner) {
1015 	case TUNER_RTL2832_FC0012:
1016 		fe = dvb_attach(fc0012_attach, adap->fe[0],
1017 			&d->i2c_adap, &rtl2832u_fc0012_config);
1018 
1019 		/* since fc0012 includs reading the signal strength delegate
1020 		 * that to the tuner driver */
1021 		adap->fe[0]->ops.read_signal_strength =
1022 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1023 
1024 		/* attach SDR */
1025 		dvb_attach_sdr(rtl2832_sdr_attach, adap->fe[0], &d->i2c_adap,
1026 				&rtl28xxu_rtl2832_fc0012_config, NULL);
1027 		break;
1028 	case TUNER_RTL2832_FC0013:
1029 		fe = dvb_attach(fc0013_attach, adap->fe[0],
1030 			&d->i2c_adap, 0xc6>>1, 0, FC_XTAL_28_8_MHZ);
1031 
1032 		/* fc0013 also supports signal strength reading */
1033 		adap->fe[0]->ops.read_signal_strength =
1034 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1035 
1036 		/* attach SDR */
1037 		dvb_attach_sdr(rtl2832_sdr_attach, adap->fe[0], &d->i2c_adap,
1038 				&rtl28xxu_rtl2832_fc0013_config, NULL);
1039 		break;
1040 	case TUNER_RTL2832_E4000: {
1041 			struct v4l2_subdev *sd;
1042 			struct i2c_adapter *i2c_adap_internal =
1043 					rtl2832_get_private_i2c_adapter(adap->fe[0]);
1044 			struct e4000_config e4000_config = {
1045 				.fe = adap->fe[0],
1046 				.clock = 28800000,
1047 			};
1048 
1049 			strlcpy(info.type, "e4000", I2C_NAME_SIZE);
1050 			info.addr = 0x64;
1051 			info.platform_data = &e4000_config;
1052 
1053 			request_module(info.type);
1054 			client = i2c_new_device(priv->demod_i2c_adapter, &info);
1055 			if (client == NULL || client->dev.driver == NULL)
1056 				break;
1057 
1058 			if (!try_module_get(client->dev.driver->owner)) {
1059 				i2c_unregister_device(client);
1060 				break;
1061 			}
1062 
1063 			priv->i2c_client_tuner = client;
1064 			sd = i2c_get_clientdata(client);
1065 			i2c_set_adapdata(i2c_adap_internal, d);
1066 
1067 			/* attach SDR */
1068 			dvb_attach_sdr(rtl2832_sdr_attach, adap->fe[0],
1069 					i2c_adap_internal,
1070 					&rtl28xxu_rtl2832_e4000_config, sd);
1071 		}
1072 		break;
1073 	case TUNER_RTL2832_FC2580:
1074 		fe = dvb_attach(fc2580_attach, adap->fe[0], &d->i2c_adap,
1075 				&rtl2832u_fc2580_config);
1076 		break;
1077 	case TUNER_RTL2832_TUA9001:
1078 		/* enable GPIO1 and GPIO4 as output */
1079 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_DIR, 0x00, 0x12);
1080 		if (ret)
1081 			goto err;
1082 
1083 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_EN, 0x12, 0x12);
1084 		if (ret)
1085 			goto err;
1086 
1087 		fe = dvb_attach(tua9001_attach, adap->fe[0], &d->i2c_adap,
1088 				&rtl2832u_tua9001_config);
1089 		break;
1090 	case TUNER_RTL2832_R820T:
1091 		fe = dvb_attach(r820t_attach, adap->fe[0], &d->i2c_adap,
1092 				&rtl2832u_r820t_config);
1093 
1094 		/* Use tuner to get the signal strength */
1095 		adap->fe[0]->ops.read_signal_strength =
1096 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1097 
1098 		/* attach SDR */
1099 		dvb_attach_sdr(rtl2832_sdr_attach, adap->fe[0], &d->i2c_adap,
1100 				&rtl28xxu_rtl2832_r820t_config, NULL);
1101 		break;
1102 	case TUNER_RTL2832_R828D:
1103 		fe = dvb_attach(r820t_attach, adap->fe[0],
1104 				priv->demod_i2c_adapter,
1105 				&rtl2832u_r828d_config);
1106 		adap->fe[0]->ops.read_signal_strength =
1107 				adap->fe[0]->ops.tuner_ops.get_rf_strength;
1108 
1109 		if (adap->fe[1]) {
1110 			fe = dvb_attach(r820t_attach, adap->fe[1],
1111 					priv->demod_i2c_adapter,
1112 					&rtl2832u_r828d_config);
1113 			adap->fe[1]->ops.read_signal_strength =
1114 					adap->fe[1]->ops.tuner_ops.get_rf_strength;
1115 		}
1116 
1117 		/* attach SDR */
1118 		dvb_attach_sdr(rtl2832_sdr_attach, adap->fe[0], &d->i2c_adap,
1119 				&rtl28xxu_rtl2832_r820t_config, NULL);
1120 		break;
1121 	default:
1122 		dev_err(&d->udev->dev, "%s: unknown tuner=%d\n", KBUILD_MODNAME,
1123 				priv->tuner);
1124 	}
1125 
1126 	if (fe == NULL && priv->i2c_client_tuner == NULL) {
1127 		ret = -ENODEV;
1128 		goto err;
1129 	}
1130 
1131 	return 0;
1132 err:
1133 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1134 	return ret;
1135 }
1136 
1137 static int rtl28xxu_init(struct dvb_usb_device *d)
1138 {
1139 	int ret;
1140 	u8 val;
1141 
1142 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
1143 
1144 	/* init USB endpoints */
1145 	ret = rtl28xx_rd_reg(d, USB_SYSCTL_0, &val);
1146 	if (ret)
1147 		goto err;
1148 
1149 	/* enable DMA and Full Packet Mode*/
1150 	val |= 0x09;
1151 	ret = rtl28xx_wr_reg(d, USB_SYSCTL_0, val);
1152 	if (ret)
1153 		goto err;
1154 
1155 	/* set EPA maximum packet size to 0x0200 */
1156 	ret = rtl28xx_wr_regs(d, USB_EPA_MAXPKT, "\x00\x02\x00\x00", 4);
1157 	if (ret)
1158 		goto err;
1159 
1160 	/* change EPA FIFO length */
1161 	ret = rtl28xx_wr_regs(d, USB_EPA_FIFO_CFG, "\x14\x00\x00\x00", 4);
1162 	if (ret)
1163 		goto err;
1164 
1165 	return ret;
1166 err:
1167 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1168 	return ret;
1169 }
1170 
1171 static void rtl28xxu_exit(struct dvb_usb_device *d)
1172 {
1173 	struct rtl28xxu_priv *priv = d->priv;
1174 	struct i2c_client *client;
1175 
1176 	dev_dbg(&d->udev->dev, "%s:\n", __func__);
1177 
1178 	/* remove I2C tuner */
1179 	client = priv->i2c_client_tuner;
1180 	if (client) {
1181 		module_put(client->dev.driver->owner);
1182 		i2c_unregister_device(client);
1183 	}
1184 
1185 	/* remove I2C slave demod */
1186 	client = priv->i2c_client_slave_demod;
1187 	if (client) {
1188 		module_put(client->dev.driver->owner);
1189 		i2c_unregister_device(client);
1190 	}
1191 
1192 	return;
1193 }
1194 
1195 static int rtl2831u_power_ctrl(struct dvb_usb_device *d, int onoff)
1196 {
1197 	int ret;
1198 	u8 gpio, sys0, epa_ctl[2];
1199 
1200 	dev_dbg(&d->udev->dev, "%s: onoff=%d\n", __func__, onoff);
1201 
1202 	/* demod adc */
1203 	ret = rtl28xx_rd_reg(d, SYS_SYS0, &sys0);
1204 	if (ret)
1205 		goto err;
1206 
1207 	/* tuner power, read GPIOs */
1208 	ret = rtl28xx_rd_reg(d, SYS_GPIO_OUT_VAL, &gpio);
1209 	if (ret)
1210 		goto err;
1211 
1212 	dev_dbg(&d->udev->dev, "%s: RD SYS0=%02x GPIO_OUT_VAL=%02x\n", __func__,
1213 			sys0, gpio);
1214 
1215 	if (onoff) {
1216 		gpio |= 0x01; /* GPIO0 = 1 */
1217 		gpio &= (~0x10); /* GPIO4 = 0 */
1218 		gpio |= 0x04; /* GPIO2 = 1, LED on */
1219 		sys0 = sys0 & 0x0f;
1220 		sys0 |= 0xe0;
1221 		epa_ctl[0] = 0x00; /* clear stall */
1222 		epa_ctl[1] = 0x00; /* clear reset */
1223 	} else {
1224 		gpio &= (~0x01); /* GPIO0 = 0 */
1225 		gpio |= 0x10; /* GPIO4 = 1 */
1226 		gpio &= (~0x04); /* GPIO2 = 1, LED off */
1227 		sys0 = sys0 & (~0xc0);
1228 		epa_ctl[0] = 0x10; /* set stall */
1229 		epa_ctl[1] = 0x02; /* set reset */
1230 	}
1231 
1232 	dev_dbg(&d->udev->dev, "%s: WR SYS0=%02x GPIO_OUT_VAL=%02x\n", __func__,
1233 			sys0, gpio);
1234 
1235 	/* demod adc */
1236 	ret = rtl28xx_wr_reg(d, SYS_SYS0, sys0);
1237 	if (ret)
1238 		goto err;
1239 
1240 	/* tuner power, write GPIOs */
1241 	ret = rtl28xx_wr_reg(d, SYS_GPIO_OUT_VAL, gpio);
1242 	if (ret)
1243 		goto err;
1244 
1245 	/* streaming EP: stall & reset */
1246 	ret = rtl28xx_wr_regs(d, USB_EPA_CTL, epa_ctl, 2);
1247 	if (ret)
1248 		goto err;
1249 
1250 	if (onoff)
1251 		usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));
1252 
1253 	return ret;
1254 err:
1255 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1256 	return ret;
1257 }
1258 
1259 static int rtl2832u_power_ctrl(struct dvb_usb_device *d, int onoff)
1260 {
1261 	int ret;
1262 
1263 	dev_dbg(&d->udev->dev, "%s: onoff=%d\n", __func__, onoff);
1264 
1265 	if (onoff) {
1266 		/* GPIO3=1, GPIO4=0 */
1267 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x08, 0x18);
1268 		if (ret)
1269 			goto err;
1270 
1271 		/* suspend? */
1272 		ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL1, 0x00, 0x10);
1273 		if (ret)
1274 			goto err;
1275 
1276 		/* enable PLL */
1277 		ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, 0x80, 0x80);
1278 		if (ret)
1279 			goto err;
1280 
1281 		/* disable reset */
1282 		ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, 0x20, 0x20);
1283 		if (ret)
1284 			goto err;
1285 
1286 		/* streaming EP: clear stall & reset */
1287 		ret = rtl28xx_wr_regs(d, USB_EPA_CTL, "\x00\x00", 2);
1288 		if (ret)
1289 			goto err;
1290 
1291 		ret = usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, 0x81));
1292 		if (ret)
1293 			goto err;
1294 	} else {
1295 		/* GPIO4=1 */
1296 		ret = rtl28xx_wr_reg_mask(d, SYS_GPIO_OUT_VAL, 0x10, 0x10);
1297 		if (ret)
1298 			goto err;
1299 
1300 		/* disable PLL */
1301 		ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, 0x00, 0x80);
1302 		if (ret)
1303 			goto err;
1304 
1305 		/* streaming EP: set stall & reset */
1306 		ret = rtl28xx_wr_regs(d, USB_EPA_CTL, "\x10\x02", 2);
1307 		if (ret)
1308 			goto err;
1309 	}
1310 
1311 	return ret;
1312 err:
1313 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1314 	return ret;
1315 }
1316 
1317 static int rtl2832u_frontend_ctrl(struct dvb_frontend *fe, int onoff)
1318 {
1319 	struct dvb_usb_device *d = fe_to_d(fe);
1320 	struct dvb_usb_adapter *adap = fe_to_adap(fe);
1321 	int ret;
1322 	u8 val;
1323 
1324 	dev_dbg(&d->udev->dev, "%s: fe=%d onoff=%d\n", __func__, fe->id, onoff);
1325 
1326 	/* control internal demod ADC */
1327 	if (fe->id == 0 && onoff)
1328 		val = 0x48; /* enable ADC */
1329 	else
1330 		val = 0x00; /* disable ADC */
1331 
1332 	ret = rtl28xx_wr_reg_mask(d, SYS_DEMOD_CTL, val, 0x48);
1333 	if (ret)
1334 		goto err;
1335 
1336 	/* bypass slave demod TS through master demod */
1337 	if (fe->id == 1 && onoff) {
1338 		ret = rtl2832_enable_external_ts_if(adap->fe[0]);
1339 		if (ret)
1340 			goto err;
1341 	}
1342 
1343 	return 0;
1344 err:
1345 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1346 	return ret;
1347 }
1348 
1349 #if IS_ENABLED(CONFIG_RC_CORE)
1350 static int rtl2831u_rc_query(struct dvb_usb_device *d)
1351 {
1352 	int ret, i;
1353 	struct rtl28xxu_priv *priv = d->priv;
1354 	u8 buf[5];
1355 	u32 rc_code;
1356 	struct rtl28xxu_reg_val rc_nec_tab[] = {
1357 		{ 0x3033, 0x80 },
1358 		{ 0x3020, 0x43 },
1359 		{ 0x3021, 0x16 },
1360 		{ 0x3022, 0x16 },
1361 		{ 0x3023, 0x5a },
1362 		{ 0x3024, 0x2d },
1363 		{ 0x3025, 0x16 },
1364 		{ 0x3026, 0x01 },
1365 		{ 0x3028, 0xb0 },
1366 		{ 0x3029, 0x04 },
1367 		{ 0x302c, 0x88 },
1368 		{ 0x302e, 0x13 },
1369 		{ 0x3030, 0xdf },
1370 		{ 0x3031, 0x05 },
1371 	};
1372 
1373 	/* init remote controller */
1374 	if (!priv->rc_active) {
1375 		for (i = 0; i < ARRAY_SIZE(rc_nec_tab); i++) {
1376 			ret = rtl28xx_wr_reg(d, rc_nec_tab[i].reg,
1377 					rc_nec_tab[i].val);
1378 			if (ret)
1379 				goto err;
1380 		}
1381 		priv->rc_active = true;
1382 	}
1383 
1384 	ret = rtl2831_rd_regs(d, SYS_IRRC_RP, buf, 5);
1385 	if (ret)
1386 		goto err;
1387 
1388 	if (buf[4] & 0x01) {
1389 		if (buf[2] == (u8) ~buf[3]) {
1390 			if (buf[0] == (u8) ~buf[1]) {
1391 				/* NEC standard (16 bit) */
1392 				rc_code = RC_SCANCODE_NEC(buf[0], buf[2]);
1393 			} else {
1394 				/* NEC extended (24 bit) */
1395 				rc_code = RC_SCANCODE_NECX(buf[0] << 8 | buf[1],
1396 							   buf[2]);
1397 			}
1398 		} else {
1399 			/* NEC full (32 bit) */
1400 			rc_code = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
1401 						    buf[2] << 8  | buf[3]);
1402 		}
1403 
1404 		rc_keydown(d->rc_dev, RC_TYPE_NEC, rc_code, 0);
1405 
1406 		ret = rtl28xx_wr_reg(d, SYS_IRRC_SR, 1);
1407 		if (ret)
1408 			goto err;
1409 
1410 		/* repeated intentionally to avoid extra keypress */
1411 		ret = rtl28xx_wr_reg(d, SYS_IRRC_SR, 1);
1412 		if (ret)
1413 			goto err;
1414 	}
1415 
1416 	return ret;
1417 err:
1418 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1419 	return ret;
1420 }
1421 
1422 static int rtl2831u_get_rc_config(struct dvb_usb_device *d,
1423 		struct dvb_usb_rc *rc)
1424 {
1425 	rc->map_name = RC_MAP_EMPTY;
1426 	rc->allowed_protos = RC_BIT_NEC;
1427 	rc->query = rtl2831u_rc_query;
1428 	rc->interval = 400;
1429 
1430 	return 0;
1431 }
1432 
1433 static int rtl2832u_rc_query(struct dvb_usb_device *d)
1434 {
1435 	int ret, i, len;
1436 	struct rtl28xxu_priv *priv = d->priv;
1437 	struct ir_raw_event ev;
1438 	u8 buf[128];
1439 	static const struct rtl28xxu_reg_val_mask refresh_tab[] = {
1440 		{IR_RX_IF,               0x03, 0xff},
1441 		{IR_RX_BUF_CTRL,         0x80, 0xff},
1442 		{IR_RX_CTRL,             0x80, 0xff},
1443 	};
1444 
1445 	/* init remote controller */
1446 	if (!priv->rc_active) {
1447 		static const struct rtl28xxu_reg_val_mask init_tab[] = {
1448 			{SYS_DEMOD_CTL1,         0x00, 0x04},
1449 			{SYS_DEMOD_CTL1,         0x00, 0x08},
1450 			{USB_CTRL,               0x20, 0x20},
1451 			{SYS_GPIO_DIR,           0x00, 0x08},
1452 			{SYS_GPIO_OUT_EN,        0x08, 0x08},
1453 			{SYS_GPIO_OUT_VAL,       0x08, 0x08},
1454 			{IR_MAX_DURATION0,       0xd0, 0xff},
1455 			{IR_MAX_DURATION1,       0x07, 0xff},
1456 			{IR_IDLE_LEN0,           0xc0, 0xff},
1457 			{IR_IDLE_LEN1,           0x00, 0xff},
1458 			{IR_GLITCH_LEN,          0x03, 0xff},
1459 			{IR_RX_CLK,              0x09, 0xff},
1460 			{IR_RX_CFG,              0x1c, 0xff},
1461 			{IR_MAX_H_TOL_LEN,       0x1e, 0xff},
1462 			{IR_MAX_L_TOL_LEN,       0x1e, 0xff},
1463 			{IR_RX_CTRL,             0x80, 0xff},
1464 		};
1465 
1466 		for (i = 0; i < ARRAY_SIZE(init_tab); i++) {
1467 			ret = rtl28xx_wr_reg_mask(d, init_tab[i].reg,
1468 					init_tab[i].val, init_tab[i].mask);
1469 			if (ret)
1470 				goto err;
1471 		}
1472 
1473 		priv->rc_active = true;
1474 	}
1475 
1476 	ret = rtl28xx_rd_reg(d, IR_RX_IF, &buf[0]);
1477 	if (ret)
1478 		goto err;
1479 
1480 	if (buf[0] != 0x83)
1481 		goto exit;
1482 
1483 	ret = rtl28xx_rd_reg(d, IR_RX_BC, &buf[0]);
1484 	if (ret)
1485 		goto err;
1486 
1487 	len = buf[0];
1488 
1489 	/* read raw code from hw */
1490 	ret = rtl2831_rd_regs(d, IR_RX_BUF, buf, len);
1491 	if (ret)
1492 		goto err;
1493 
1494 	/* let hw receive new code */
1495 	for (i = 0; i < ARRAY_SIZE(refresh_tab); i++) {
1496 		ret = rtl28xx_wr_reg_mask(d, refresh_tab[i].reg,
1497 				refresh_tab[i].val, refresh_tab[i].mask);
1498 		if (ret)
1499 			goto err;
1500 	}
1501 
1502 	/* pass data to Kernel IR decoder */
1503 	init_ir_raw_event(&ev);
1504 
1505 	for (i = 0; i < len; i++) {
1506 		ev.pulse = buf[i] >> 7;
1507 		ev.duration = 50800 * (buf[i] & 0x7f);
1508 		ir_raw_event_store_with_filter(d->rc_dev, &ev);
1509 	}
1510 
1511 	/* 'flush' ir_raw_event_store_with_filter() */
1512 	ir_raw_event_set_idle(d->rc_dev, true);
1513 	ir_raw_event_handle(d->rc_dev);
1514 exit:
1515 	return ret;
1516 err:
1517 	dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
1518 	return ret;
1519 }
1520 
1521 static int rtl2832u_get_rc_config(struct dvb_usb_device *d,
1522 		struct dvb_usb_rc *rc)
1523 {
1524 	/* disable IR interrupts in order to avoid SDR sample loss */
1525 	if (rtl28xxu_disable_rc)
1526 		return rtl28xx_wr_reg(d, IR_RX_IE, 0x00);
1527 
1528 	/* load empty to enable rc */
1529 	if (!rc->map_name)
1530 		rc->map_name = RC_MAP_EMPTY;
1531 	rc->allowed_protos = RC_BIT_ALL;
1532 	rc->driver_type = RC_DRIVER_IR_RAW;
1533 	rc->query = rtl2832u_rc_query;
1534 	rc->interval = 400;
1535 
1536 	return 0;
1537 }
1538 #else
1539 #define rtl2831u_get_rc_config NULL
1540 #define rtl2832u_get_rc_config NULL
1541 #endif
1542 
1543 static const struct dvb_usb_device_properties rtl2831u_props = {
1544 	.driver_name = KBUILD_MODNAME,
1545 	.owner = THIS_MODULE,
1546 	.adapter_nr = adapter_nr,
1547 	.size_of_priv = sizeof(struct rtl28xxu_priv),
1548 
1549 	.power_ctrl = rtl2831u_power_ctrl,
1550 	.i2c_algo = &rtl28xxu_i2c_algo,
1551 	.read_config = rtl2831u_read_config,
1552 	.frontend_attach = rtl2831u_frontend_attach,
1553 	.tuner_attach = rtl2831u_tuner_attach,
1554 	.init = rtl28xxu_init,
1555 	.get_rc_config = rtl2831u_get_rc_config,
1556 
1557 	.num_adapters = 1,
1558 	.adapter = {
1559 		{
1560 			.stream = DVB_USB_STREAM_BULK(0x81, 6, 8 * 512),
1561 		},
1562 	},
1563 };
1564 
1565 static const struct dvb_usb_device_properties rtl2832u_props = {
1566 	.driver_name = KBUILD_MODNAME,
1567 	.owner = THIS_MODULE,
1568 	.adapter_nr = adapter_nr,
1569 	.size_of_priv = sizeof(struct rtl28xxu_priv),
1570 
1571 	.power_ctrl = rtl2832u_power_ctrl,
1572 	.frontend_ctrl = rtl2832u_frontend_ctrl,
1573 	.i2c_algo = &rtl28xxu_i2c_algo,
1574 	.read_config = rtl2832u_read_config,
1575 	.frontend_attach = rtl2832u_frontend_attach,
1576 	.tuner_attach = rtl2832u_tuner_attach,
1577 	.init = rtl28xxu_init,
1578 	.exit = rtl28xxu_exit,
1579 	.get_rc_config = rtl2832u_get_rc_config,
1580 
1581 	.num_adapters = 1,
1582 	.adapter = {
1583 		{
1584 			.stream = DVB_USB_STREAM_BULK(0x81, 6, 8 * 512),
1585 		},
1586 	},
1587 };
1588 
1589 static const struct usb_device_id rtl28xxu_id_table[] = {
1590 	/* RTL2831U devices: */
1591 	{ DVB_USB_DEVICE(USB_VID_REALTEK, USB_PID_REALTEK_RTL2831U,
1592 		&rtl2831u_props, "Realtek RTL2831U reference design", NULL) },
1593 	{ DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT,
1594 		&rtl2831u_props, "Freecom USB2.0 DVB-T", NULL) },
1595 	{ DVB_USB_DEVICE(USB_VID_WIDEVIEW, USB_PID_FREECOM_DVBT_2,
1596 		&rtl2831u_props, "Freecom USB2.0 DVB-T", NULL) },
1597 
1598 	/* RTL2832U devices: */
1599 	{ DVB_USB_DEVICE(USB_VID_REALTEK, 0x2832,
1600 		&rtl2832u_props, "Realtek RTL2832U reference design", NULL) },
1601 	{ DVB_USB_DEVICE(USB_VID_REALTEK, 0x2838,
1602 		&rtl2832u_props, "Realtek RTL2832U reference design", NULL) },
1603 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK_BLACK_REV1,
1604 		&rtl2832u_props, "TerraTec Cinergy T Stick Black", RC_MAP_TERRATEC_SLIM) },
1605 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_DELOCK_USB2_DVBT,
1606 		&rtl2832u_props, "G-Tek Electronics Group Lifeview LV5TDLX DVB-T", NULL) },
1607 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK,
1608 		&rtl2832u_props, "TerraTec NOXON DAB Stick", NULL) },
1609 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK_REV2,
1610 		&rtl2832u_props, "TerraTec NOXON DAB Stick (rev 2)", NULL) },
1611 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK_REV3,
1612 		&rtl2832u_props, "TerraTec NOXON DAB Stick (rev 3)", NULL) },
1613 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_TREKSTOR_TERRES_2_0,
1614 		&rtl2832u_props, "Trekstor DVB-T Stick Terres 2.0", NULL) },
1615 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1101,
1616 		&rtl2832u_props, "Dexatek DK DVB-T Dongle", NULL) },
1617 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6680,
1618 		&rtl2832u_props, "DigitalNow Quad DVB-T Receiver", NULL) },
1619 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, USB_PID_WINFAST_DTV_DONGLE_MINID,
1620 		&rtl2832u_props, "Leadtek Winfast DTV Dongle Mini D", NULL) },
1621 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d3,
1622 		&rtl2832u_props, "TerraTec Cinergy T Stick RC (Rev. 3)", NULL) },
1623 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1102,
1624 		&rtl2832u_props, "Dexatek DK mini DVB-T Dongle", NULL) },
1625 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00d7,
1626 		&rtl2832u_props, "TerraTec Cinergy T Stick+", NULL) },
1627 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd3a8,
1628 		&rtl2832u_props, "ASUS My Cinema-U3100Mini Plus V2", NULL) },
1629 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd393,
1630 		&rtl2832u_props, "GIGABYTE U7300", NULL) },
1631 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x1104,
1632 		&rtl2832u_props, "MSI DIGIVOX Micro HD", NULL) },
1633 	{ DVB_USB_DEVICE(USB_VID_COMPRO, 0x0620,
1634 		&rtl2832u_props, "Compro VideoMate U620F", NULL) },
1635 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd394,
1636 		&rtl2832u_props, "MaxMedia HU394-T", NULL) },
1637 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6a03,
1638 		&rtl2832u_props, "Leadtek WinFast DTV Dongle mini", NULL) },
1639 	{ DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_CPYTO_REDI_PC50A,
1640 		&rtl2832u_props, "Crypto ReDi PC 50 A", NULL) },
1641 	{ DVB_USB_DEVICE(USB_VID_KYE, 0x707f,
1642 		&rtl2832u_props, "Genius TVGo DVB-T03", NULL) },
1643 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, 0xd395,
1644 		&rtl2832u_props, "Peak DVB-T USB", NULL) },
1645 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV20_RTL2832U,
1646 		&rtl2832u_props, "Sveon STV20", NULL) },
1647 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV21,
1648 		&rtl2832u_props, "Sveon STV21", NULL) },
1649 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV27,
1650 		&rtl2832u_props, "Sveon STV27", NULL) },
1651 
1652 	/* RTL2832P devices: */
1653 	{ DVB_USB_DEVICE(USB_VID_HANFTEK, 0x0131,
1654 		&rtl2832u_props, "Astrometa DVB-T2", NULL) },
1655 	{ }
1656 };
1657 MODULE_DEVICE_TABLE(usb, rtl28xxu_id_table);
1658 
1659 static struct usb_driver rtl28xxu_usb_driver = {
1660 	.name = KBUILD_MODNAME,
1661 	.id_table = rtl28xxu_id_table,
1662 	.probe = dvb_usbv2_probe,
1663 	.disconnect = dvb_usbv2_disconnect,
1664 	.suspend = dvb_usbv2_suspend,
1665 	.resume = dvb_usbv2_resume,
1666 	.reset_resume = dvb_usbv2_reset_resume,
1667 	.no_dynamic_id = 1,
1668 	.soft_unbind = 1,
1669 };
1670 
1671 module_usb_driver(rtl28xxu_usb_driver);
1672 
1673 MODULE_DESCRIPTION("Realtek RTL28xxU DVB USB driver");
1674 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
1675 MODULE_AUTHOR("Thomas Mair <thomas.mair86@googlemail.com>");
1676 MODULE_LICENSE("GPL");
1677