1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Afatech AF9035 DVB USB driver
4  *
5  * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
6  * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
7  */
8 
9 #include "af9035.h"
10 
11 /* Max transfer size done by I2C transfer functions */
12 #define MAX_XFER_SIZE  64
13 
14 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
15 
16 static u16 af9035_checksum(const u8 *buf, size_t len)
17 {
18 	size_t i;
19 	u16 checksum = 0;
20 
21 	for (i = 1; i < len; i++) {
22 		if (i % 2)
23 			checksum += buf[i] << 8;
24 		else
25 			checksum += buf[i];
26 	}
27 	checksum = ~checksum;
28 
29 	return checksum;
30 }
31 
32 static int af9035_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
33 {
34 #define REQ_HDR_LEN 4 /* send header size */
35 #define ACK_HDR_LEN 3 /* rece header size */
36 #define CHECKSUM_LEN 2
37 #define USB_TIMEOUT 2000
38 	struct state *state = d_to_priv(d);
39 	struct usb_interface *intf = d->intf;
40 	int ret, wlen, rlen;
41 	u16 checksum, tmp_checksum;
42 
43 	mutex_lock(&d->usb_mutex);
44 
45 	/* buffer overflow check */
46 	if (req->wlen > (BUF_LEN - REQ_HDR_LEN - CHECKSUM_LEN) ||
47 			req->rlen > (BUF_LEN - ACK_HDR_LEN - CHECKSUM_LEN)) {
48 		dev_err(&intf->dev, "too much data wlen=%d rlen=%d\n",
49 			req->wlen, req->rlen);
50 		ret = -EINVAL;
51 		goto exit;
52 	}
53 
54 	state->buf[0] = REQ_HDR_LEN + req->wlen + CHECKSUM_LEN - 1;
55 	state->buf[1] = req->mbox;
56 	state->buf[2] = req->cmd;
57 	state->buf[3] = state->seq++;
58 	memcpy(&state->buf[REQ_HDR_LEN], req->wbuf, req->wlen);
59 
60 	wlen = REQ_HDR_LEN + req->wlen + CHECKSUM_LEN;
61 	rlen = ACK_HDR_LEN + req->rlen + CHECKSUM_LEN;
62 
63 	/* calc and add checksum */
64 	checksum = af9035_checksum(state->buf, state->buf[0] - 1);
65 	state->buf[state->buf[0] - 1] = (checksum >> 8);
66 	state->buf[state->buf[0] - 0] = (checksum & 0xff);
67 
68 	/* no ack for these packets */
69 	if (req->cmd == CMD_FW_DL)
70 		rlen = 0;
71 
72 	ret = dvb_usbv2_generic_rw_locked(d,
73 			state->buf, wlen, state->buf, rlen);
74 	if (ret)
75 		goto exit;
76 
77 	/* no ack for those packets */
78 	if (req->cmd == CMD_FW_DL)
79 		goto exit;
80 
81 	/* verify checksum */
82 	checksum = af9035_checksum(state->buf, rlen - 2);
83 	tmp_checksum = (state->buf[rlen - 2] << 8) | state->buf[rlen - 1];
84 	if (tmp_checksum != checksum) {
85 		dev_err(&intf->dev, "command=%02x checksum mismatch (%04x != %04x)\n",
86 			req->cmd, tmp_checksum, checksum);
87 		ret = -EIO;
88 		goto exit;
89 	}
90 
91 	/* check status */
92 	if (state->buf[2]) {
93 		/* fw returns status 1 when IR code was not received */
94 		if (req->cmd == CMD_IR_GET || state->buf[2] == 1) {
95 			ret = 1;
96 			goto exit;
97 		}
98 
99 		dev_dbg(&intf->dev, "command=%02x failed fw error=%d\n",
100 			req->cmd, state->buf[2]);
101 		ret = -EIO;
102 		goto exit;
103 	}
104 
105 	/* read request, copy returned data to return buf */
106 	if (req->rlen)
107 		memcpy(req->rbuf, &state->buf[ACK_HDR_LEN], req->rlen);
108 exit:
109 	mutex_unlock(&d->usb_mutex);
110 	return ret;
111 }
112 
113 /* write multiple registers */
114 static int af9035_wr_regs(struct dvb_usb_device *d, u32 reg, u8 *val, int len)
115 {
116 	struct usb_interface *intf = d->intf;
117 	u8 wbuf[MAX_XFER_SIZE];
118 	u8 mbox = (reg >> 16) & 0xff;
119 	struct usb_req req = { CMD_MEM_WR, mbox, 6 + len, wbuf, 0, NULL };
120 
121 	if (6 + len > sizeof(wbuf)) {
122 		dev_warn(&intf->dev, "i2c wr: len=%d is too big!\n", len);
123 		return -EOPNOTSUPP;
124 	}
125 
126 	wbuf[0] = len;
127 	wbuf[1] = 2;
128 	wbuf[2] = 0;
129 	wbuf[3] = 0;
130 	wbuf[4] = (reg >> 8) & 0xff;
131 	wbuf[5] = (reg >> 0) & 0xff;
132 	memcpy(&wbuf[6], val, len);
133 
134 	return af9035_ctrl_msg(d, &req);
135 }
136 
137 /* read multiple registers */
138 static int af9035_rd_regs(struct dvb_usb_device *d, u32 reg, u8 *val, int len)
139 {
140 	u8 wbuf[] = { len, 2, 0, 0, (reg >> 8) & 0xff, reg & 0xff };
141 	u8 mbox = (reg >> 16) & 0xff;
142 	struct usb_req req = { CMD_MEM_RD, mbox, sizeof(wbuf), wbuf, len, val };
143 
144 	return af9035_ctrl_msg(d, &req);
145 }
146 
147 /* write single register */
148 static int af9035_wr_reg(struct dvb_usb_device *d, u32 reg, u8 val)
149 {
150 	return af9035_wr_regs(d, reg, &val, 1);
151 }
152 
153 /* read single register */
154 static int af9035_rd_reg(struct dvb_usb_device *d, u32 reg, u8 *val)
155 {
156 	return af9035_rd_regs(d, reg, val, 1);
157 }
158 
159 /* write single register with mask */
160 static int af9035_wr_reg_mask(struct dvb_usb_device *d, u32 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 = af9035_rd_regs(d, reg, &tmp, 1);
169 		if (ret)
170 			return ret;
171 
172 		val &= mask;
173 		tmp &= ~mask;
174 		val |= tmp;
175 	}
176 
177 	return af9035_wr_regs(d, reg, &val, 1);
178 }
179 
180 static int af9035_add_i2c_dev(struct dvb_usb_device *d, const char *type,
181 		u8 addr, void *platform_data, struct i2c_adapter *adapter)
182 {
183 	int ret, num;
184 	struct state *state = d_to_priv(d);
185 	struct usb_interface *intf = d->intf;
186 	struct i2c_client *client;
187 	struct i2c_board_info board_info = {
188 		.addr = addr,
189 		.platform_data = platform_data,
190 	};
191 
192 	strscpy(board_info.type, type, I2C_NAME_SIZE);
193 
194 	/* find first free client */
195 	for (num = 0; num < AF9035_I2C_CLIENT_MAX; num++) {
196 		if (state->i2c_client[num] == NULL)
197 			break;
198 	}
199 
200 	dev_dbg(&intf->dev, "num=%d\n", num);
201 
202 	if (num == AF9035_I2C_CLIENT_MAX) {
203 		dev_err(&intf->dev, "I2C client out of index\n");
204 		ret = -ENODEV;
205 		goto err;
206 	}
207 
208 	request_module("%s", board_info.type);
209 
210 	/* register I2C device */
211 	client = i2c_new_client_device(adapter, &board_info);
212 	if (!i2c_client_has_driver(client)) {
213 		dev_err(&intf->dev, "failed to bind i2c device to %s driver\n", type);
214 		ret = -ENODEV;
215 		goto err;
216 	}
217 
218 	/* increase I2C driver usage count */
219 	if (!try_module_get(client->dev.driver->owner)) {
220 		i2c_unregister_device(client);
221 		ret = -ENODEV;
222 		goto err;
223 	}
224 
225 	state->i2c_client[num] = client;
226 	return 0;
227 err:
228 	dev_dbg(&intf->dev, "failed=%d\n", ret);
229 	return ret;
230 }
231 
232 static void af9035_del_i2c_dev(struct dvb_usb_device *d)
233 {
234 	int num;
235 	struct state *state = d_to_priv(d);
236 	struct usb_interface *intf = d->intf;
237 	struct i2c_client *client;
238 
239 	/* find last used client */
240 	num = AF9035_I2C_CLIENT_MAX;
241 	while (num--) {
242 		if (state->i2c_client[num] != NULL)
243 			break;
244 	}
245 
246 	dev_dbg(&intf->dev, "num=%d\n", num);
247 
248 	if (num == -1) {
249 		dev_err(&intf->dev, "I2C client out of index\n");
250 		goto err;
251 	}
252 
253 	client = state->i2c_client[num];
254 
255 	/* decrease I2C driver usage count */
256 	module_put(client->dev.driver->owner);
257 
258 	/* unregister I2C device */
259 	i2c_unregister_device(client);
260 
261 	state->i2c_client[num] = NULL;
262 	return;
263 err:
264 	dev_dbg(&intf->dev, "failed\n");
265 }
266 
267 static int af9035_i2c_master_xfer(struct i2c_adapter *adap,
268 		struct i2c_msg msg[], int num)
269 {
270 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
271 	struct state *state = d_to_priv(d);
272 	int ret;
273 
274 	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
275 		return -EAGAIN;
276 
277 	/*
278 	 * AF9035 I2C sub header is 5 bytes long. Meaning of those bytes are:
279 	 * 0: data len
280 	 * 1: I2C addr << 1
281 	 * 2: reg addr len
282 	 *    byte 3 and 4 can be used as reg addr
283 	 * 3: reg addr MSB
284 	 *    used when reg addr len is set to 2
285 	 * 4: reg addr LSB
286 	 *    used when reg addr len is set to 1 or 2
287 	 *
288 	 * For the simplify we do not use register addr at all.
289 	 * NOTE: As a firmware knows tuner type there is very small possibility
290 	 * there could be some tuner I2C hacks done by firmware and this may
291 	 * lead problems if firmware expects those bytes are used.
292 	 *
293 	 * TODO: Here is few hacks. AF9035 chip integrates AF9033 demodulator.
294 	 * IT9135 chip integrates AF9033 demodulator and RF tuner. For dual
295 	 * tuner devices, there is also external AF9033 demodulator connected
296 	 * via external I2C bus. All AF9033 demod I2C traffic, both single and
297 	 * dual tuner configuration, is covered by firmware - actual USB IO
298 	 * looks just like a memory access.
299 	 * In case of IT913x chip, there is own tuner driver. It is implemented
300 	 * currently as a I2C driver, even tuner IP block is likely build
301 	 * directly into the demodulator memory space and there is no own I2C
302 	 * bus. I2C subsystem does not allow register multiple devices to same
303 	 * bus, having same slave address. Due to that we reuse demod address,
304 	 * shifted by one bit, on that case.
305 	 *
306 	 * For IT930x we use a different command and the sub header is
307 	 * different as well:
308 	 * 0: data len
309 	 * 1: I2C bus (0x03 seems to be only value used)
310 	 * 2: I2C addr << 1
311 	 */
312 #define AF9035_IS_I2C_XFER_WRITE_READ(_msg, _num) \
313 	(_num == 2 && !(_msg[0].flags & I2C_M_RD) && (_msg[1].flags & I2C_M_RD))
314 #define AF9035_IS_I2C_XFER_WRITE(_msg, _num) \
315 	(_num == 1 && !(_msg[0].flags & I2C_M_RD))
316 #define AF9035_IS_I2C_XFER_READ(_msg, _num) \
317 	(_num == 1 && (_msg[0].flags & I2C_M_RD))
318 
319 	if (AF9035_IS_I2C_XFER_WRITE_READ(msg, num)) {
320 		if (msg[0].len > 40 || msg[1].len > 40) {
321 			/* TODO: correct limits > 40 */
322 			ret = -EOPNOTSUPP;
323 		} else if ((msg[0].addr == state->af9033_i2c_addr[0]) ||
324 			   (msg[0].addr == state->af9033_i2c_addr[1])) {
325 			/* demod access via firmware interface */
326 			u32 reg = msg[0].buf[0] << 16 | msg[0].buf[1] << 8 |
327 					msg[0].buf[2];
328 
329 			if (msg[0].addr == state->af9033_i2c_addr[1])
330 				reg |= 0x100000;
331 
332 			ret = af9035_rd_regs(d, reg, &msg[1].buf[0],
333 					msg[1].len);
334 		} else if (state->no_read) {
335 			memset(msg[1].buf, 0, msg[1].len);
336 			ret = 0;
337 		} else {
338 			/* I2C write + read */
339 			u8 buf[MAX_XFER_SIZE];
340 			struct usb_req req = { CMD_I2C_RD, 0, 5 + msg[0].len,
341 					buf, msg[1].len, msg[1].buf };
342 
343 			if (state->chip_type == 0x9306) {
344 				req.cmd = CMD_GENERIC_I2C_RD;
345 				req.wlen = 3 + msg[0].len;
346 			}
347 			req.mbox |= ((msg[0].addr & 0x80)  >>  3);
348 
349 			buf[0] = msg[1].len;
350 			if (state->chip_type == 0x9306) {
351 				buf[1] = 0x03; /* I2C bus */
352 				buf[2] = msg[0].addr << 1;
353 				memcpy(&buf[3], msg[0].buf, msg[0].len);
354 			} else {
355 				buf[1] = msg[0].addr << 1;
356 				buf[3] = 0x00; /* reg addr MSB */
357 				buf[4] = 0x00; /* reg addr LSB */
358 
359 				/* Keep prev behavior for write req len > 2*/
360 				if (msg[0].len > 2) {
361 					buf[2] = 0x00; /* reg addr len */
362 					memcpy(&buf[5], msg[0].buf, msg[0].len);
363 
364 				/* Use reg addr fields if write req len <= 2 */
365 				} else {
366 					req.wlen = 5;
367 					buf[2] = msg[0].len;
368 					if (msg[0].len == 2) {
369 						buf[3] = msg[0].buf[0];
370 						buf[4] = msg[0].buf[1];
371 					} else if (msg[0].len == 1) {
372 						buf[4] = msg[0].buf[0];
373 					}
374 				}
375 			}
376 			ret = af9035_ctrl_msg(d, &req);
377 		}
378 	} else if (AF9035_IS_I2C_XFER_WRITE(msg, num)) {
379 		if (msg[0].len > 40) {
380 			/* TODO: correct limits > 40 */
381 			ret = -EOPNOTSUPP;
382 		} else if ((msg[0].addr == state->af9033_i2c_addr[0]) ||
383 			   (msg[0].addr == state->af9033_i2c_addr[1])) {
384 			/* demod access via firmware interface */
385 			u32 reg = msg[0].buf[0] << 16 | msg[0].buf[1] << 8 |
386 					msg[0].buf[2];
387 
388 			if (msg[0].addr == state->af9033_i2c_addr[1])
389 				reg |= 0x100000;
390 
391 			ret = (msg[0].len >= 3) ? af9035_wr_regs(d, reg,
392 							         &msg[0].buf[3],
393 							         msg[0].len - 3)
394 					        : -EOPNOTSUPP;
395 		} else {
396 			/* I2C write */
397 			u8 buf[MAX_XFER_SIZE];
398 			struct usb_req req = { CMD_I2C_WR, 0, 5 + msg[0].len,
399 					buf, 0, NULL };
400 
401 			if (state->chip_type == 0x9306) {
402 				req.cmd = CMD_GENERIC_I2C_WR;
403 				req.wlen = 3 + msg[0].len;
404 			}
405 
406 			req.mbox |= ((msg[0].addr & 0x80)  >>  3);
407 			buf[0] = msg[0].len;
408 			if (state->chip_type == 0x9306) {
409 				buf[1] = 0x03; /* I2C bus */
410 				buf[2] = msg[0].addr << 1;
411 				memcpy(&buf[3], msg[0].buf, msg[0].len);
412 			} else {
413 				buf[1] = msg[0].addr << 1;
414 				buf[2] = 0x00; /* reg addr len */
415 				buf[3] = 0x00; /* reg addr MSB */
416 				buf[4] = 0x00; /* reg addr LSB */
417 				memcpy(&buf[5], msg[0].buf, msg[0].len);
418 			}
419 			ret = af9035_ctrl_msg(d, &req);
420 		}
421 	} else if (AF9035_IS_I2C_XFER_READ(msg, num)) {
422 		if (msg[0].len > 40) {
423 			/* TODO: correct limits > 40 */
424 			ret = -EOPNOTSUPP;
425 		} else if (state->no_read) {
426 			memset(msg[0].buf, 0, msg[0].len);
427 			ret = 0;
428 		} else {
429 			/* I2C read */
430 			u8 buf[5];
431 			struct usb_req req = { CMD_I2C_RD, 0, sizeof(buf),
432 						buf, msg[0].len, msg[0].buf };
433 
434 			if (state->chip_type == 0x9306) {
435 				req.cmd = CMD_GENERIC_I2C_RD;
436 				req.wlen = 3;
437 			}
438 			req.mbox |= ((msg[0].addr & 0x80)  >>  3);
439 			buf[0] = msg[0].len;
440 			if (state->chip_type == 0x9306) {
441 				buf[1] = 0x03; /* I2C bus */
442 				buf[2] = msg[0].addr << 1;
443 			} else {
444 				buf[1] = msg[0].addr << 1;
445 				buf[2] = 0x00; /* reg addr len */
446 				buf[3] = 0x00; /* reg addr MSB */
447 				buf[4] = 0x00; /* reg addr LSB */
448 			}
449 			ret = af9035_ctrl_msg(d, &req);
450 		}
451 	} else {
452 		/*
453 		 * We support only three kind of I2C transactions:
454 		 * 1) 1 x write + 1 x read (repeated start)
455 		 * 2) 1 x write
456 		 * 3) 1 x read
457 		 */
458 		ret = -EOPNOTSUPP;
459 	}
460 
461 	mutex_unlock(&d->i2c_mutex);
462 
463 	if (ret < 0)
464 		return ret;
465 	else
466 		return num;
467 }
468 
469 static u32 af9035_i2c_functionality(struct i2c_adapter *adapter)
470 {
471 	return I2C_FUNC_I2C;
472 }
473 
474 static struct i2c_algorithm af9035_i2c_algo = {
475 	.master_xfer = af9035_i2c_master_xfer,
476 	.functionality = af9035_i2c_functionality,
477 };
478 
479 static int af9035_identify_state(struct dvb_usb_device *d, const char **name)
480 {
481 	struct state *state = d_to_priv(d);
482 	struct usb_interface *intf = d->intf;
483 	int ret, i, ts_mode_invalid;
484 	unsigned int utmp, eeprom_addr;
485 	u8 tmp;
486 	u8 wbuf[1] = { 1 };
487 	u8 rbuf[4];
488 	struct usb_req req = { CMD_FW_QUERYINFO, 0, sizeof(wbuf), wbuf,
489 			sizeof(rbuf), rbuf };
490 
491 	ret = af9035_rd_regs(d, 0x1222, rbuf, 3);
492 	if (ret < 0)
493 		goto err;
494 
495 	state->chip_version = rbuf[0];
496 	state->chip_type = rbuf[2] << 8 | rbuf[1] << 0;
497 
498 	ret = af9035_rd_reg(d, 0x384f, &state->prechip_version);
499 	if (ret < 0)
500 		goto err;
501 
502 	dev_info(&intf->dev, "prechip_version=%02x chip_version=%02x chip_type=%04x\n",
503 		 state->prechip_version, state->chip_version, state->chip_type);
504 
505 	if (state->chip_type == 0x9135) {
506 		if (state->chip_version == 0x02) {
507 			*name = AF9035_FIRMWARE_IT9135_V2;
508 			utmp = 0x00461d;
509 		} else {
510 			*name = AF9035_FIRMWARE_IT9135_V1;
511 			utmp = 0x00461b;
512 		}
513 
514 		/* Check if eeprom exists */
515 		ret = af9035_rd_reg(d, utmp, &tmp);
516 		if (ret < 0)
517 			goto err;
518 
519 		if (tmp == 0x00) {
520 			dev_dbg(&intf->dev, "no eeprom\n");
521 			state->no_eeprom = true;
522 			goto check_firmware_status;
523 		}
524 
525 		eeprom_addr = EEPROM_BASE_IT9135;
526 	} else if (state->chip_type == 0x9306) {
527 		*name = AF9035_FIRMWARE_IT9303;
528 		state->no_eeprom = true;
529 		goto check_firmware_status;
530 	} else {
531 		*name = AF9035_FIRMWARE_AF9035;
532 		eeprom_addr = EEPROM_BASE_AF9035;
533 	}
534 
535 	/* Read and store eeprom */
536 	for (i = 0; i < 256; i += 32) {
537 		ret = af9035_rd_regs(d, eeprom_addr + i, &state->eeprom[i], 32);
538 		if (ret < 0)
539 			goto err;
540 	}
541 
542 	dev_dbg(&intf->dev, "eeprom dump:\n");
543 	for (i = 0; i < 256; i += 16)
544 		dev_dbg(&intf->dev, "%*ph\n", 16, &state->eeprom[i]);
545 
546 	/* check for dual tuner mode */
547 	tmp = state->eeprom[EEPROM_TS_MODE];
548 	ts_mode_invalid = 0;
549 	switch (tmp) {
550 	case 0:
551 		break;
552 	case 1:
553 	case 3:
554 		state->dual_mode = true;
555 		break;
556 	case 5:
557 		if (state->chip_type != 0x9135 && state->chip_type != 0x9306)
558 			state->dual_mode = true;	/* AF9035 */
559 		else
560 			ts_mode_invalid = 1;
561 		break;
562 	default:
563 		ts_mode_invalid = 1;
564 	}
565 
566 	dev_dbg(&intf->dev, "ts mode=%d dual mode=%d\n", tmp, state->dual_mode);
567 
568 	if (ts_mode_invalid)
569 		dev_info(&intf->dev, "ts mode=%d not supported, defaulting to single tuner mode!", tmp);
570 
571 check_firmware_status:
572 	ret = af9035_ctrl_msg(d, &req);
573 	if (ret < 0)
574 		goto err;
575 
576 	dev_dbg(&intf->dev, "reply=%*ph\n", 4, rbuf);
577 	if (rbuf[0] || rbuf[1] || rbuf[2] || rbuf[3])
578 		ret = WARM;
579 	else
580 		ret = COLD;
581 
582 	return ret;
583 
584 err:
585 	dev_dbg(&intf->dev, "failed=%d\n", ret);
586 
587 	return ret;
588 }
589 
590 static int af9035_download_firmware_old(struct dvb_usb_device *d,
591 		const struct firmware *fw)
592 {
593 	struct usb_interface *intf = d->intf;
594 	int ret, i, j, len;
595 	u8 wbuf[1];
596 	struct usb_req req = { 0, 0, 0, NULL, 0, NULL };
597 	struct usb_req req_fw_dl = { CMD_FW_DL, 0, 0, wbuf, 0, NULL };
598 	u8 hdr_core;
599 	u16 hdr_addr, hdr_data_len, hdr_checksum;
600 	#define MAX_DATA 58
601 	#define HDR_SIZE 7
602 
603 	/*
604 	 * Thanks to Daniel Glöckner <daniel-gl@gmx.net> about that info!
605 	 *
606 	 * byte 0: MCS 51 core
607 	 *  There are two inside the AF9035 (1=Link and 2=OFDM) with separate
608 	 *  address spaces
609 	 * byte 1-2: Big endian destination address
610 	 * byte 3-4: Big endian number of data bytes following the header
611 	 * byte 5-6: Big endian header checksum, apparently ignored by the chip
612 	 *  Calculated as ~(h[0]*256+h[1]+h[2]*256+h[3]+h[4]*256)
613 	 */
614 
615 	for (i = fw->size; i > HDR_SIZE;) {
616 		hdr_core = fw->data[fw->size - i + 0];
617 		hdr_addr = fw->data[fw->size - i + 1] << 8;
618 		hdr_addr |= fw->data[fw->size - i + 2] << 0;
619 		hdr_data_len = fw->data[fw->size - i + 3] << 8;
620 		hdr_data_len |= fw->data[fw->size - i + 4] << 0;
621 		hdr_checksum = fw->data[fw->size - i + 5] << 8;
622 		hdr_checksum |= fw->data[fw->size - i + 6] << 0;
623 
624 		dev_dbg(&intf->dev, "core=%d addr=%04x data_len=%d checksum=%04x\n",
625 			hdr_core, hdr_addr, hdr_data_len, hdr_checksum);
626 
627 		if (((hdr_core != 1) && (hdr_core != 2)) ||
628 				(hdr_data_len > i)) {
629 			dev_dbg(&intf->dev, "bad firmware\n");
630 			break;
631 		}
632 
633 		/* download begin packet */
634 		req.cmd = CMD_FW_DL_BEGIN;
635 		ret = af9035_ctrl_msg(d, &req);
636 		if (ret < 0)
637 			goto err;
638 
639 		/* download firmware packet(s) */
640 		for (j = HDR_SIZE + hdr_data_len; j > 0; j -= MAX_DATA) {
641 			len = j;
642 			if (len > MAX_DATA)
643 				len = MAX_DATA;
644 			req_fw_dl.wlen = len;
645 			req_fw_dl.wbuf = (u8 *) &fw->data[fw->size - i +
646 					HDR_SIZE + hdr_data_len - j];
647 			ret = af9035_ctrl_msg(d, &req_fw_dl);
648 			if (ret < 0)
649 				goto err;
650 		}
651 
652 		/* download end packet */
653 		req.cmd = CMD_FW_DL_END;
654 		ret = af9035_ctrl_msg(d, &req);
655 		if (ret < 0)
656 			goto err;
657 
658 		i -= hdr_data_len + HDR_SIZE;
659 
660 		dev_dbg(&intf->dev, "data uploaded=%zu\n", fw->size - i);
661 	}
662 
663 	/* print warn if firmware is bad, continue and see what happens */
664 	if (i)
665 		dev_warn(&intf->dev, "bad firmware\n");
666 
667 	return 0;
668 
669 err:
670 	dev_dbg(&intf->dev, "failed=%d\n", ret);
671 
672 	return ret;
673 }
674 
675 static int af9035_download_firmware_new(struct dvb_usb_device *d,
676 		const struct firmware *fw)
677 {
678 	struct usb_interface *intf = d->intf;
679 	int ret, i, i_prev;
680 	struct usb_req req_fw_dl = { CMD_FW_SCATTER_WR, 0, 0, NULL, 0, NULL };
681 	#define HDR_SIZE 7
682 
683 	/*
684 	 * There seems to be following firmware header. Meaning of bytes 0-3
685 	 * is unknown.
686 	 *
687 	 * 0: 3
688 	 * 1: 0, 1
689 	 * 2: 0
690 	 * 3: 1, 2, 3
691 	 * 4: addr MSB
692 	 * 5: addr LSB
693 	 * 6: count of data bytes ?
694 	 */
695 	for (i = HDR_SIZE, i_prev = 0; i <= fw->size; i++) {
696 		if (i == fw->size ||
697 				(fw->data[i + 0] == 0x03 &&
698 				(fw->data[i + 1] == 0x00 ||
699 				fw->data[i + 1] == 0x01) &&
700 				fw->data[i + 2] == 0x00)) {
701 			req_fw_dl.wlen = i - i_prev;
702 			req_fw_dl.wbuf = (u8 *) &fw->data[i_prev];
703 			i_prev = i;
704 			ret = af9035_ctrl_msg(d, &req_fw_dl);
705 			if (ret < 0)
706 				goto err;
707 
708 			dev_dbg(&intf->dev, "data uploaded=%d\n", i);
709 		}
710 	}
711 
712 	return 0;
713 
714 err:
715 	dev_dbg(&intf->dev, "failed=%d\n", ret);
716 
717 	return ret;
718 }
719 
720 static int af9035_download_firmware(struct dvb_usb_device *d,
721 		const struct firmware *fw)
722 {
723 	struct usb_interface *intf = d->intf;
724 	struct state *state = d_to_priv(d);
725 	int ret;
726 	u8 wbuf[1];
727 	u8 rbuf[4];
728 	u8 tmp;
729 	struct usb_req req = { 0, 0, 0, NULL, 0, NULL };
730 	struct usb_req req_fw_ver = { CMD_FW_QUERYINFO, 0, 1, wbuf, 4, rbuf };
731 
732 	dev_dbg(&intf->dev, "\n");
733 
734 	/*
735 	 * In case of dual tuner configuration we need to do some extra
736 	 * initialization in order to download firmware to slave demod too,
737 	 * which is done by master demod.
738 	 * Master feeds also clock and controls power via GPIO.
739 	 */
740 	if (state->dual_mode) {
741 		/* configure gpioh1, reset & power slave demod */
742 		ret = af9035_wr_reg_mask(d, 0x00d8b0, 0x01, 0x01);
743 		if (ret < 0)
744 			goto err;
745 
746 		ret = af9035_wr_reg_mask(d, 0x00d8b1, 0x01, 0x01);
747 		if (ret < 0)
748 			goto err;
749 
750 		ret = af9035_wr_reg_mask(d, 0x00d8af, 0x00, 0x01);
751 		if (ret < 0)
752 			goto err;
753 
754 		usleep_range(10000, 50000);
755 
756 		ret = af9035_wr_reg_mask(d, 0x00d8af, 0x01, 0x01);
757 		if (ret < 0)
758 			goto err;
759 
760 		/* tell the slave I2C address */
761 		tmp = state->eeprom[EEPROM_2ND_DEMOD_ADDR];
762 
763 		/* Use default I2C address if eeprom has no address set */
764 		if (!tmp)
765 			tmp = 0x1d << 1; /* 8-bit format used by chip */
766 
767 		if ((state->chip_type == 0x9135) ||
768 				(state->chip_type == 0x9306)) {
769 			ret = af9035_wr_reg(d, 0x004bfb, tmp);
770 			if (ret < 0)
771 				goto err;
772 		} else {
773 			ret = af9035_wr_reg(d, 0x00417f, tmp);
774 			if (ret < 0)
775 				goto err;
776 
777 			/* enable clock out */
778 			ret = af9035_wr_reg_mask(d, 0x00d81a, 0x01, 0x01);
779 			if (ret < 0)
780 				goto err;
781 		}
782 	}
783 
784 	if (fw->data[0] == 0x01)
785 		ret = af9035_download_firmware_old(d, fw);
786 	else
787 		ret = af9035_download_firmware_new(d, fw);
788 	if (ret < 0)
789 		goto err;
790 
791 	/* firmware loaded, request boot */
792 	req.cmd = CMD_FW_BOOT;
793 	ret = af9035_ctrl_msg(d, &req);
794 	if (ret < 0)
795 		goto err;
796 
797 	/* ensure firmware starts */
798 	wbuf[0] = 1;
799 	ret = af9035_ctrl_msg(d, &req_fw_ver);
800 	if (ret < 0)
801 		goto err;
802 
803 	if (!(rbuf[0] || rbuf[1] || rbuf[2] || rbuf[3])) {
804 		dev_err(&intf->dev, "firmware did not run\n");
805 		ret = -ENODEV;
806 		goto err;
807 	}
808 
809 	dev_info(&intf->dev, "firmware version=%d.%d.%d.%d",
810 		 rbuf[0], rbuf[1], rbuf[2], rbuf[3]);
811 
812 	return 0;
813 
814 err:
815 	dev_dbg(&intf->dev, "failed=%d\n", ret);
816 
817 	return ret;
818 }
819 
820 static int af9035_read_config(struct dvb_usb_device *d)
821 {
822 	struct usb_interface *intf = d->intf;
823 	struct state *state = d_to_priv(d);
824 	int ret, i;
825 	u8 tmp;
826 	u16 tmp16;
827 
828 	/* Demod I2C address */
829 	state->af9033_i2c_addr[0] = 0x1c;
830 	state->af9033_i2c_addr[1] = 0x1d;
831 	state->af9033_config[0].adc_multiplier = AF9033_ADC_MULTIPLIER_2X;
832 	state->af9033_config[1].adc_multiplier = AF9033_ADC_MULTIPLIER_2X;
833 	state->af9033_config[0].ts_mode = AF9033_TS_MODE_USB;
834 	state->af9033_config[1].ts_mode = AF9033_TS_MODE_SERIAL;
835 	state->it930x_addresses = 0;
836 
837 	if (state->chip_type == 0x9135) {
838 		/* feed clock for integrated RF tuner */
839 		state->af9033_config[0].dyn0_clk = true;
840 		state->af9033_config[1].dyn0_clk = true;
841 
842 		if (state->chip_version == 0x02) {
843 			state->af9033_config[0].tuner = AF9033_TUNER_IT9135_60;
844 			state->af9033_config[1].tuner = AF9033_TUNER_IT9135_60;
845 		} else {
846 			state->af9033_config[0].tuner = AF9033_TUNER_IT9135_38;
847 			state->af9033_config[1].tuner = AF9033_TUNER_IT9135_38;
848 		}
849 
850 		if (state->no_eeprom) {
851 			/* Remote controller to NEC polling by default */
852 			state->ir_mode = 0x05;
853 			state->ir_type = 0x00;
854 
855 			goto skip_eeprom;
856 		}
857 	} else if (state->chip_type == 0x9306) {
858 		/*
859 		 * IT930x is an USB bridge, only single demod-single tuner
860 		 * configurations seen so far.
861 		 */
862 		if ((le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_AVERMEDIA) &&
863 		    (le16_to_cpu(d->udev->descriptor.idProduct) == USB_PID_AVERMEDIA_TD310)) {
864 			state->it930x_addresses = 1;
865 		}
866 		return 0;
867 	}
868 
869 	/* Remote controller */
870 	state->ir_mode = state->eeprom[EEPROM_IR_MODE];
871 	state->ir_type = state->eeprom[EEPROM_IR_TYPE];
872 
873 	if (state->dual_mode) {
874 		/* Read 2nd demodulator I2C address. 8-bit format on eeprom */
875 		tmp = state->eeprom[EEPROM_2ND_DEMOD_ADDR];
876 		if (tmp)
877 			state->af9033_i2c_addr[1] = tmp >> 1;
878 
879 		dev_dbg(&intf->dev, "2nd demod I2C addr=%02x\n",
880 			state->af9033_i2c_addr[1]);
881 	}
882 
883 	for (i = 0; i < state->dual_mode + 1; i++) {
884 		unsigned int eeprom_offset = 0;
885 
886 		/* tuner */
887 		tmp = state->eeprom[EEPROM_1_TUNER_ID + eeprom_offset];
888 		dev_dbg(&intf->dev, "[%d]tuner=%02x\n", i, tmp);
889 
890 		/* tuner sanity check */
891 		if (state->chip_type == 0x9135) {
892 			if (state->chip_version == 0x02) {
893 				/* IT9135 BX (v2) */
894 				switch (tmp) {
895 				case AF9033_TUNER_IT9135_60:
896 				case AF9033_TUNER_IT9135_61:
897 				case AF9033_TUNER_IT9135_62:
898 					state->af9033_config[i].tuner = tmp;
899 					break;
900 				}
901 			} else {
902 				/* IT9135 AX (v1) */
903 				switch (tmp) {
904 				case AF9033_TUNER_IT9135_38:
905 				case AF9033_TUNER_IT9135_51:
906 				case AF9033_TUNER_IT9135_52:
907 					state->af9033_config[i].tuner = tmp;
908 					break;
909 				}
910 			}
911 		} else {
912 			/* AF9035 */
913 			state->af9033_config[i].tuner = tmp;
914 		}
915 
916 		if (state->af9033_config[i].tuner != tmp) {
917 			dev_info(&intf->dev, "[%d] overriding tuner from %02x to %02x\n",
918 				 i, tmp, state->af9033_config[i].tuner);
919 		}
920 
921 		switch (state->af9033_config[i].tuner) {
922 		case AF9033_TUNER_TUA9001:
923 		case AF9033_TUNER_FC0011:
924 		case AF9033_TUNER_MXL5007T:
925 		case AF9033_TUNER_TDA18218:
926 		case AF9033_TUNER_FC2580:
927 		case AF9033_TUNER_FC0012:
928 			state->af9033_config[i].spec_inv = 1;
929 			break;
930 		case AF9033_TUNER_IT9135_38:
931 		case AF9033_TUNER_IT9135_51:
932 		case AF9033_TUNER_IT9135_52:
933 		case AF9033_TUNER_IT9135_60:
934 		case AF9033_TUNER_IT9135_61:
935 		case AF9033_TUNER_IT9135_62:
936 			break;
937 		default:
938 			dev_warn(&intf->dev, "tuner id=%02x not supported, please report!",
939 				 tmp);
940 		}
941 
942 		/* disable dual mode if driver does not support it */
943 		if (i == 1)
944 			switch (state->af9033_config[i].tuner) {
945 			case AF9033_TUNER_FC0012:
946 			case AF9033_TUNER_IT9135_38:
947 			case AF9033_TUNER_IT9135_51:
948 			case AF9033_TUNER_IT9135_52:
949 			case AF9033_TUNER_IT9135_60:
950 			case AF9033_TUNER_IT9135_61:
951 			case AF9033_TUNER_IT9135_62:
952 			case AF9033_TUNER_MXL5007T:
953 				break;
954 			default:
955 				state->dual_mode = false;
956 				dev_info(&intf->dev, "driver does not support 2nd tuner and will disable it");
957 		}
958 
959 		/* tuner IF frequency */
960 		tmp = state->eeprom[EEPROM_1_IF_L + eeprom_offset];
961 		tmp16 = tmp << 0;
962 		tmp = state->eeprom[EEPROM_1_IF_H + eeprom_offset];
963 		tmp16 |= tmp << 8;
964 		dev_dbg(&intf->dev, "[%d]IF=%d\n", i, tmp16);
965 
966 		eeprom_offset += 0x10; /* shift for the 2nd tuner params */
967 	}
968 
969 skip_eeprom:
970 	/* get demod clock */
971 	ret = af9035_rd_reg(d, 0x00d800, &tmp);
972 	if (ret < 0)
973 		goto err;
974 
975 	tmp = (tmp >> 0) & 0x0f;
976 
977 	for (i = 0; i < ARRAY_SIZE(state->af9033_config); i++) {
978 		if (state->chip_type == 0x9135)
979 			state->af9033_config[i].clock = clock_lut_it9135[tmp];
980 		else
981 			state->af9033_config[i].clock = clock_lut_af9035[tmp];
982 	}
983 
984 	state->no_read = false;
985 	/* Some MXL5007T devices cannot properly handle tuner I2C read ops. */
986 	if (state->af9033_config[0].tuner == AF9033_TUNER_MXL5007T &&
987 		le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_AVERMEDIA)
988 
989 		switch (le16_to_cpu(d->udev->descriptor.idProduct)) {
990 		case USB_PID_AVERMEDIA_A867:
991 		case USB_PID_AVERMEDIA_TWINSTAR:
992 			dev_info(&intf->dev,
993 				 "Device may have issues with I2C read operations. Enabling fix.\n");
994 			state->no_read = true;
995 			break;
996 		}
997 
998 	return 0;
999 
1000 err:
1001 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1002 
1003 	return ret;
1004 }
1005 
1006 static int af9035_tua9001_tuner_callback(struct dvb_usb_device *d,
1007 		int cmd, int arg)
1008 {
1009 	struct usb_interface *intf = d->intf;
1010 	int ret;
1011 	u8 val;
1012 
1013 	dev_dbg(&intf->dev, "cmd=%d arg=%d\n", cmd, arg);
1014 
1015 	/*
1016 	 * CEN     always enabled by hardware wiring
1017 	 * RESETN  GPIOT3
1018 	 * RXEN    GPIOT2
1019 	 */
1020 
1021 	switch (cmd) {
1022 	case TUA9001_CMD_RESETN:
1023 		if (arg)
1024 			val = 0x00;
1025 		else
1026 			val = 0x01;
1027 
1028 		ret = af9035_wr_reg_mask(d, 0x00d8e7, val, 0x01);
1029 		if (ret < 0)
1030 			goto err;
1031 		break;
1032 	case TUA9001_CMD_RXEN:
1033 		if (arg)
1034 			val = 0x01;
1035 		else
1036 			val = 0x00;
1037 
1038 		ret = af9035_wr_reg_mask(d, 0x00d8eb, val, 0x01);
1039 		if (ret < 0)
1040 			goto err;
1041 		break;
1042 	}
1043 
1044 	return 0;
1045 
1046 err:
1047 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1048 
1049 	return ret;
1050 }
1051 
1052 
1053 static int af9035_fc0011_tuner_callback(struct dvb_usb_device *d,
1054 		int cmd, int arg)
1055 {
1056 	struct usb_interface *intf = d->intf;
1057 	int ret;
1058 
1059 	switch (cmd) {
1060 	case FC0011_FE_CALLBACK_POWER:
1061 		/* Tuner enable */
1062 		ret = af9035_wr_reg_mask(d, 0xd8eb, 1, 1);
1063 		if (ret < 0)
1064 			goto err;
1065 
1066 		ret = af9035_wr_reg_mask(d, 0xd8ec, 1, 1);
1067 		if (ret < 0)
1068 			goto err;
1069 
1070 		ret = af9035_wr_reg_mask(d, 0xd8ed, 1, 1);
1071 		if (ret < 0)
1072 			goto err;
1073 
1074 		/* LED */
1075 		ret = af9035_wr_reg_mask(d, 0xd8d0, 1, 1);
1076 		if (ret < 0)
1077 			goto err;
1078 
1079 		ret = af9035_wr_reg_mask(d, 0xd8d1, 1, 1);
1080 		if (ret < 0)
1081 			goto err;
1082 
1083 		usleep_range(10000, 50000);
1084 		break;
1085 	case FC0011_FE_CALLBACK_RESET:
1086 		ret = af9035_wr_reg(d, 0xd8e9, 1);
1087 		if (ret < 0)
1088 			goto err;
1089 
1090 		ret = af9035_wr_reg(d, 0xd8e8, 1);
1091 		if (ret < 0)
1092 			goto err;
1093 
1094 		ret = af9035_wr_reg(d, 0xd8e7, 1);
1095 		if (ret < 0)
1096 			goto err;
1097 
1098 		usleep_range(10000, 20000);
1099 
1100 		ret = af9035_wr_reg(d, 0xd8e7, 0);
1101 		if (ret < 0)
1102 			goto err;
1103 
1104 		usleep_range(10000, 20000);
1105 		break;
1106 	default:
1107 		ret = -EINVAL;
1108 		goto err;
1109 	}
1110 
1111 	return 0;
1112 
1113 err:
1114 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1115 
1116 	return ret;
1117 }
1118 
1119 static int af9035_tuner_callback(struct dvb_usb_device *d, int cmd, int arg)
1120 {
1121 	struct state *state = d_to_priv(d);
1122 
1123 	switch (state->af9033_config[0].tuner) {
1124 	case AF9033_TUNER_FC0011:
1125 		return af9035_fc0011_tuner_callback(d, cmd, arg);
1126 	case AF9033_TUNER_TUA9001:
1127 		return af9035_tua9001_tuner_callback(d, cmd, arg);
1128 	default:
1129 		break;
1130 	}
1131 
1132 	return 0;
1133 }
1134 
1135 static int af9035_frontend_callback(void *adapter_priv, int component,
1136 				    int cmd, int arg)
1137 {
1138 	struct i2c_adapter *adap = adapter_priv;
1139 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
1140 	struct usb_interface *intf = d->intf;
1141 
1142 	dev_dbg(&intf->dev, "component=%d cmd=%d arg=%d\n",
1143 		component, cmd, arg);
1144 
1145 	switch (component) {
1146 	case DVB_FRONTEND_COMPONENT_TUNER:
1147 		return af9035_tuner_callback(d, cmd, arg);
1148 	default:
1149 		break;
1150 	}
1151 
1152 	return 0;
1153 }
1154 
1155 static int af9035_get_adapter_count(struct dvb_usb_device *d)
1156 {
1157 	struct state *state = d_to_priv(d);
1158 
1159 	return state->dual_mode + 1;
1160 }
1161 
1162 static int af9035_frontend_attach(struct dvb_usb_adapter *adap)
1163 {
1164 	struct state *state = adap_to_priv(adap);
1165 	struct dvb_usb_device *d = adap_to_d(adap);
1166 	struct usb_interface *intf = d->intf;
1167 	int ret;
1168 
1169 	dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);
1170 
1171 	if (!state->af9033_config[adap->id].tuner) {
1172 		/* unsupported tuner */
1173 		ret = -ENODEV;
1174 		goto err;
1175 	}
1176 
1177 	state->af9033_config[adap->id].fe = &adap->fe[0];
1178 	state->af9033_config[adap->id].ops = &state->ops;
1179 	ret = af9035_add_i2c_dev(d, "af9033", state->af9033_i2c_addr[adap->id],
1180 			&state->af9033_config[adap->id], &d->i2c_adap);
1181 	if (ret)
1182 		goto err;
1183 
1184 	if (adap->fe[0] == NULL) {
1185 		ret = -ENODEV;
1186 		goto err;
1187 	}
1188 
1189 	/* disable I2C-gate */
1190 	adap->fe[0]->ops.i2c_gate_ctrl = NULL;
1191 	adap->fe[0]->callback = af9035_frontend_callback;
1192 
1193 	return 0;
1194 
1195 err:
1196 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1197 
1198 	return ret;
1199 }
1200 
1201 /*
1202  * The I2C speed register is calculated with:
1203  *	I2C speed register = (1000000000 / (24.4 * 16 * I2C_speed))
1204  *
1205  * The default speed register for it930x is 7, with means a
1206  * speed of ~366 kbps
1207  */
1208 #define I2C_SPEED_366K 7
1209 
1210 static int it930x_frontend_attach(struct dvb_usb_adapter *adap)
1211 {
1212 	struct state *state = adap_to_priv(adap);
1213 	struct dvb_usb_device *d = adap_to_d(adap);
1214 	struct usb_interface *intf = d->intf;
1215 	int ret;
1216 	struct si2168_config si2168_config;
1217 	struct i2c_adapter *adapter;
1218 
1219 	dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);
1220 
1221 	/* I2C master bus 2 clock speed 366k */
1222 	ret = af9035_wr_reg(d, 0x00f6a7, I2C_SPEED_366K);
1223 	if (ret < 0)
1224 		goto err;
1225 
1226 	/* I2C master bus 1,3 clock speed 366k */
1227 	ret = af9035_wr_reg(d, 0x00f103, I2C_SPEED_366K);
1228 	if (ret < 0)
1229 		goto err;
1230 
1231 	/* set gpio11 low */
1232 	ret = af9035_wr_reg_mask(d, 0xd8d4, 0x01, 0x01);
1233 	if (ret < 0)
1234 		goto err;
1235 
1236 	ret = af9035_wr_reg_mask(d, 0xd8d5, 0x01, 0x01);
1237 	if (ret < 0)
1238 		goto err;
1239 
1240 	ret = af9035_wr_reg_mask(d, 0xd8d3, 0x01, 0x01);
1241 	if (ret < 0)
1242 		goto err;
1243 
1244 	/* Tuner enable using gpiot2_en, gpiot2_on and gpiot2_o (reset) */
1245 	ret = af9035_wr_reg_mask(d, 0xd8b8, 0x01, 0x01);
1246 	if (ret < 0)
1247 		goto err;
1248 
1249 	ret = af9035_wr_reg_mask(d, 0xd8b9, 0x01, 0x01);
1250 	if (ret < 0)
1251 		goto err;
1252 
1253 	ret = af9035_wr_reg_mask(d, 0xd8b7, 0x00, 0x01);
1254 	if (ret < 0)
1255 		goto err;
1256 
1257 	msleep(200);
1258 
1259 	ret = af9035_wr_reg_mask(d, 0xd8b7, 0x01, 0x01);
1260 	if (ret < 0)
1261 		goto err;
1262 
1263 	memset(&si2168_config, 0, sizeof(si2168_config));
1264 	si2168_config.i2c_adapter = &adapter;
1265 	si2168_config.fe = &adap->fe[0];
1266 	si2168_config.ts_mode = SI2168_TS_SERIAL;
1267 
1268 	state->af9033_config[adap->id].fe = &adap->fe[0];
1269 	state->af9033_config[adap->id].ops = &state->ops;
1270 	ret = af9035_add_i2c_dev(d, "si2168",
1271 				 it930x_addresses_table[state->it930x_addresses].frontend_i2c_addr,
1272 				 &si2168_config, &d->i2c_adap);
1273 	if (ret)
1274 		goto err;
1275 
1276 	if (adap->fe[0] == NULL) {
1277 		ret = -ENODEV;
1278 		goto err;
1279 	}
1280 	state->i2c_adapter_demod = adapter;
1281 
1282 	return 0;
1283 
1284 err:
1285 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1286 
1287 	return ret;
1288 }
1289 
1290 static int af9035_frontend_detach(struct dvb_usb_adapter *adap)
1291 {
1292 	struct state *state = adap_to_priv(adap);
1293 	struct dvb_usb_device *d = adap_to_d(adap);
1294 	struct usb_interface *intf = d->intf;
1295 
1296 	dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);
1297 
1298 	if (adap->id == 1) {
1299 		if (state->i2c_client[1])
1300 			af9035_del_i2c_dev(d);
1301 	} else if (adap->id == 0) {
1302 		if (state->i2c_client[0])
1303 			af9035_del_i2c_dev(d);
1304 	}
1305 
1306 	return 0;
1307 }
1308 
1309 static const struct fc0011_config af9035_fc0011_config = {
1310 	.i2c_address = 0x60,
1311 };
1312 
1313 static struct mxl5007t_config af9035_mxl5007t_config[] = {
1314 	{
1315 		.xtal_freq_hz = MxL_XTAL_24_MHZ,
1316 		.if_freq_hz = MxL_IF_4_57_MHZ,
1317 		.invert_if = 0,
1318 		.loop_thru_enable = 0,
1319 		.clk_out_enable = 0,
1320 		.clk_out_amp = MxL_CLKOUT_AMP_0_94V,
1321 	}, {
1322 		.xtal_freq_hz = MxL_XTAL_24_MHZ,
1323 		.if_freq_hz = MxL_IF_4_57_MHZ,
1324 		.invert_if = 0,
1325 		.loop_thru_enable = 1,
1326 		.clk_out_enable = 1,
1327 		.clk_out_amp = MxL_CLKOUT_AMP_0_94V,
1328 	}
1329 };
1330 
1331 static struct tda18218_config af9035_tda18218_config = {
1332 	.i2c_address = 0x60,
1333 	.i2c_wr_max = 21,
1334 };
1335 
1336 static const struct fc0012_config af9035_fc0012_config[] = {
1337 	{
1338 		.i2c_address = 0x63,
1339 		.xtal_freq = FC_XTAL_36_MHZ,
1340 		.dual_master = true,
1341 		.loop_through = true,
1342 		.clock_out = true,
1343 	}, {
1344 		.i2c_address = 0x63 | 0x80, /* I2C bus select hack */
1345 		.xtal_freq = FC_XTAL_36_MHZ,
1346 		.dual_master = true,
1347 	}
1348 };
1349 
1350 static int af9035_tuner_attach(struct dvb_usb_adapter *adap)
1351 {
1352 	struct state *state = adap_to_priv(adap);
1353 	struct dvb_usb_device *d = adap_to_d(adap);
1354 	struct usb_interface *intf = d->intf;
1355 	int ret;
1356 	struct dvb_frontend *fe;
1357 	struct i2c_msg msg[1];
1358 	u8 tuner_addr;
1359 
1360 	dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);
1361 
1362 	/*
1363 	 * XXX: Hack used in that function: we abuse unused I2C address bit [7]
1364 	 * to carry info about used I2C bus for dual tuner configuration.
1365 	 */
1366 
1367 	switch (state->af9033_config[adap->id].tuner) {
1368 	case AF9033_TUNER_TUA9001: {
1369 		struct tua9001_platform_data tua9001_pdata = {
1370 			.dvb_frontend = adap->fe[0],
1371 		};
1372 
1373 		/*
1374 		 * AF9035 gpiot3 = TUA9001 RESETN
1375 		 * AF9035 gpiot2 = TUA9001 RXEN
1376 		 */
1377 
1378 		/* configure gpiot2 and gpiot2 as output */
1379 		ret = af9035_wr_reg_mask(d, 0x00d8ec, 0x01, 0x01);
1380 		if (ret < 0)
1381 			goto err;
1382 
1383 		ret = af9035_wr_reg_mask(d, 0x00d8ed, 0x01, 0x01);
1384 		if (ret < 0)
1385 			goto err;
1386 
1387 		ret = af9035_wr_reg_mask(d, 0x00d8e8, 0x01, 0x01);
1388 		if (ret < 0)
1389 			goto err;
1390 
1391 		ret = af9035_wr_reg_mask(d, 0x00d8e9, 0x01, 0x01);
1392 		if (ret < 0)
1393 			goto err;
1394 
1395 		/* attach tuner */
1396 		ret = af9035_add_i2c_dev(d, "tua9001", 0x60, &tua9001_pdata,
1397 					 &d->i2c_adap);
1398 		if (ret)
1399 			goto err;
1400 
1401 		fe = adap->fe[0];
1402 		break;
1403 	}
1404 	case AF9033_TUNER_FC0011:
1405 		fe = dvb_attach(fc0011_attach, adap->fe[0],
1406 				&d->i2c_adap, &af9035_fc0011_config);
1407 		break;
1408 	case AF9033_TUNER_MXL5007T:
1409 		if (adap->id == 0) {
1410 			ret = af9035_wr_reg(d, 0x00d8e0, 1);
1411 			if (ret < 0)
1412 				goto err;
1413 
1414 			ret = af9035_wr_reg(d, 0x00d8e1, 1);
1415 			if (ret < 0)
1416 				goto err;
1417 
1418 			ret = af9035_wr_reg(d, 0x00d8df, 0);
1419 			if (ret < 0)
1420 				goto err;
1421 
1422 			msleep(30);
1423 
1424 			ret = af9035_wr_reg(d, 0x00d8df, 1);
1425 			if (ret < 0)
1426 				goto err;
1427 
1428 			msleep(300);
1429 
1430 			ret = af9035_wr_reg(d, 0x00d8c0, 1);
1431 			if (ret < 0)
1432 				goto err;
1433 
1434 			ret = af9035_wr_reg(d, 0x00d8c1, 1);
1435 			if (ret < 0)
1436 				goto err;
1437 
1438 			ret = af9035_wr_reg(d, 0x00d8bf, 0);
1439 			if (ret < 0)
1440 				goto err;
1441 
1442 			ret = af9035_wr_reg(d, 0x00d8b4, 1);
1443 			if (ret < 0)
1444 				goto err;
1445 
1446 			ret = af9035_wr_reg(d, 0x00d8b5, 1);
1447 			if (ret < 0)
1448 				goto err;
1449 
1450 			ret = af9035_wr_reg(d, 0x00d8b3, 1);
1451 			if (ret < 0)
1452 				goto err;
1453 
1454 			tuner_addr = 0x60;
1455 		} else {
1456 			tuner_addr = 0x60 | 0x80; /* I2C bus hack */
1457 		}
1458 
1459 		/* attach tuner */
1460 		fe = dvb_attach(mxl5007t_attach, adap->fe[0], &d->i2c_adap,
1461 				tuner_addr, &af9035_mxl5007t_config[adap->id]);
1462 		break;
1463 	case AF9033_TUNER_TDA18218:
1464 		/* attach tuner */
1465 		fe = dvb_attach(tda18218_attach, adap->fe[0],
1466 				&d->i2c_adap, &af9035_tda18218_config);
1467 		break;
1468 	case AF9033_TUNER_FC2580: {
1469 		struct fc2580_platform_data fc2580_pdata = {
1470 			.dvb_frontend = adap->fe[0],
1471 		};
1472 
1473 		/* Tuner enable using gpiot2_o, gpiot2_en and gpiot2_on  */
1474 		ret = af9035_wr_reg_mask(d, 0xd8eb, 0x01, 0x01);
1475 		if (ret < 0)
1476 			goto err;
1477 
1478 		ret = af9035_wr_reg_mask(d, 0xd8ec, 0x01, 0x01);
1479 		if (ret < 0)
1480 			goto err;
1481 
1482 		ret = af9035_wr_reg_mask(d, 0xd8ed, 0x01, 0x01);
1483 		if (ret < 0)
1484 			goto err;
1485 
1486 		usleep_range(10000, 50000);
1487 		/* attach tuner */
1488 		ret = af9035_add_i2c_dev(d, "fc2580", 0x56, &fc2580_pdata,
1489 					 &d->i2c_adap);
1490 		if (ret)
1491 			goto err;
1492 
1493 		fe = adap->fe[0];
1494 		break;
1495 	}
1496 	case AF9033_TUNER_FC0012:
1497 		/*
1498 		 * AF9035 gpiot2 = FC0012 enable
1499 		 * XXX: there seems to be something on gpioh8 too, but on my
1500 		 * test I didn't find any difference.
1501 		 */
1502 
1503 		if (adap->id == 0) {
1504 			/* configure gpiot2 as output and high */
1505 			ret = af9035_wr_reg_mask(d, 0xd8eb, 0x01, 0x01);
1506 			if (ret < 0)
1507 				goto err;
1508 
1509 			ret = af9035_wr_reg_mask(d, 0xd8ec, 0x01, 0x01);
1510 			if (ret < 0)
1511 				goto err;
1512 
1513 			ret = af9035_wr_reg_mask(d, 0xd8ed, 0x01, 0x01);
1514 			if (ret < 0)
1515 				goto err;
1516 		} else {
1517 			/*
1518 			 * FIXME: That belongs for the FC0012 driver.
1519 			 * Write 02 to FC0012 master tuner register 0d directly
1520 			 * in order to make slave tuner working.
1521 			 */
1522 			msg[0].addr = 0x63;
1523 			msg[0].flags = 0;
1524 			msg[0].len = 2;
1525 			msg[0].buf = "\x0d\x02";
1526 			ret = i2c_transfer(&d->i2c_adap, msg, 1);
1527 			if (ret < 0)
1528 				goto err;
1529 		}
1530 
1531 		usleep_range(10000, 50000);
1532 
1533 		fe = dvb_attach(fc0012_attach, adap->fe[0], &d->i2c_adap,
1534 				&af9035_fc0012_config[adap->id]);
1535 		break;
1536 	case AF9033_TUNER_IT9135_38:
1537 	case AF9033_TUNER_IT9135_51:
1538 	case AF9033_TUNER_IT9135_52:
1539 	case AF9033_TUNER_IT9135_60:
1540 	case AF9033_TUNER_IT9135_61:
1541 	case AF9033_TUNER_IT9135_62:
1542 	{
1543 		struct platform_device *pdev;
1544 		const char *name;
1545 		struct it913x_platform_data it913x_pdata = {
1546 			.regmap = state->af9033_config[adap->id].regmap,
1547 			.fe = adap->fe[0],
1548 		};
1549 
1550 		switch (state->af9033_config[adap->id].tuner) {
1551 		case AF9033_TUNER_IT9135_38:
1552 		case AF9033_TUNER_IT9135_51:
1553 		case AF9033_TUNER_IT9135_52:
1554 			name = "it9133ax-tuner";
1555 			break;
1556 		case AF9033_TUNER_IT9135_60:
1557 		case AF9033_TUNER_IT9135_61:
1558 		case AF9033_TUNER_IT9135_62:
1559 			name = "it9133bx-tuner";
1560 			break;
1561 		default:
1562 			ret = -ENODEV;
1563 			goto err;
1564 		}
1565 
1566 		if (state->dual_mode) {
1567 			if (adap->id == 0)
1568 				it913x_pdata.role = IT913X_ROLE_DUAL_MASTER;
1569 			else
1570 				it913x_pdata.role = IT913X_ROLE_DUAL_SLAVE;
1571 		} else {
1572 			it913x_pdata.role = IT913X_ROLE_SINGLE;
1573 		}
1574 
1575 		request_module("%s", "it913x");
1576 		pdev = platform_device_register_data(&d->intf->dev, name,
1577 						     PLATFORM_DEVID_AUTO,
1578 						     &it913x_pdata,
1579 						     sizeof(it913x_pdata));
1580 		if (IS_ERR(pdev) || !pdev->dev.driver) {
1581 			ret = -ENODEV;
1582 			goto err;
1583 		}
1584 		if (!try_module_get(pdev->dev.driver->owner)) {
1585 			platform_device_unregister(pdev);
1586 			ret = -ENODEV;
1587 			goto err;
1588 		}
1589 
1590 		state->platform_device_tuner[adap->id] = pdev;
1591 		fe = adap->fe[0];
1592 		break;
1593 	}
1594 	default:
1595 		fe = NULL;
1596 	}
1597 
1598 	if (fe == NULL) {
1599 		ret = -ENODEV;
1600 		goto err;
1601 	}
1602 
1603 	return 0;
1604 
1605 err:
1606 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1607 
1608 	return ret;
1609 }
1610 
1611 static int it930x_tuner_attach(struct dvb_usb_adapter *adap)
1612 {
1613 	struct state *state = adap_to_priv(adap);
1614 	struct dvb_usb_device *d = adap_to_d(adap);
1615 	struct usb_interface *intf = d->intf;
1616 	int ret;
1617 	struct si2157_config si2157_config;
1618 
1619 	dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);
1620 
1621 	memset(&si2157_config, 0, sizeof(si2157_config));
1622 	si2157_config.fe = adap->fe[0];
1623 
1624 	/*
1625 	 * HACK: The Logilink VG0022A and TerraTec TC2 Stick have
1626 	 * a bug: when the si2157 firmware that came with the device
1627 	 * is replaced by a new one, the I2C transfers to the tuner
1628 	 * will return just 0xff.
1629 	 *
1630 	 * Probably, the vendor firmware has some patch specifically
1631 	 * designed for this device. So, we can't replace by the
1632 	 * generic firmware. The right solution would be to extract
1633 	 * the si2157 firmware from the original driver and ask the
1634 	 * driver to load the specifically designed firmware, but,
1635 	 * while we don't have that, the next best solution is to just
1636 	 * keep the original firmware at the device.
1637 	 */
1638 	if ((le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_DEXATEK &&
1639 	     le16_to_cpu(d->udev->descriptor.idProduct) == 0x0100) ||
1640 	    (le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_TERRATEC &&
1641 	     le16_to_cpu(d->udev->descriptor.idProduct) == USB_PID_TERRATEC_CINERGY_TC2_STICK))
1642 		si2157_config.dont_load_firmware = true;
1643 
1644 	si2157_config.if_port = it930x_addresses_table[state->it930x_addresses].tuner_if_port;
1645 	ret = af9035_add_i2c_dev(d, "si2157",
1646 				 it930x_addresses_table[state->it930x_addresses].tuner_i2c_addr,
1647 				 &si2157_config, state->i2c_adapter_demod);
1648 	if (ret)
1649 		goto err;
1650 
1651 	return 0;
1652 
1653 err:
1654 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1655 
1656 	return ret;
1657 }
1658 
1659 
1660 static int it930x_tuner_detach(struct dvb_usb_adapter *adap)
1661 {
1662 	struct state *state = adap_to_priv(adap);
1663 	struct dvb_usb_device *d = adap_to_d(adap);
1664 	struct usb_interface *intf = d->intf;
1665 
1666 	dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);
1667 
1668 	if (adap->id == 1) {
1669 		if (state->i2c_client[3])
1670 			af9035_del_i2c_dev(d);
1671 	} else if (adap->id == 0) {
1672 		if (state->i2c_client[1])
1673 			af9035_del_i2c_dev(d);
1674 	}
1675 
1676 	return 0;
1677 }
1678 
1679 
1680 static int af9035_tuner_detach(struct dvb_usb_adapter *adap)
1681 {
1682 	struct state *state = adap_to_priv(adap);
1683 	struct dvb_usb_device *d = adap_to_d(adap);
1684 	struct usb_interface *intf = d->intf;
1685 
1686 	dev_dbg(&intf->dev, "adap->id=%d\n", adap->id);
1687 
1688 	switch (state->af9033_config[adap->id].tuner) {
1689 	case AF9033_TUNER_TUA9001:
1690 	case AF9033_TUNER_FC2580:
1691 		if (adap->id == 1) {
1692 			if (state->i2c_client[3])
1693 				af9035_del_i2c_dev(d);
1694 		} else if (adap->id == 0) {
1695 			if (state->i2c_client[1])
1696 				af9035_del_i2c_dev(d);
1697 		}
1698 		break;
1699 	case AF9033_TUNER_IT9135_38:
1700 	case AF9033_TUNER_IT9135_51:
1701 	case AF9033_TUNER_IT9135_52:
1702 	case AF9033_TUNER_IT9135_60:
1703 	case AF9033_TUNER_IT9135_61:
1704 	case AF9033_TUNER_IT9135_62:
1705 	{
1706 		struct platform_device *pdev;
1707 
1708 		pdev = state->platform_device_tuner[adap->id];
1709 		if (pdev) {
1710 			module_put(pdev->dev.driver->owner);
1711 			platform_device_unregister(pdev);
1712 		}
1713 		break;
1714 	}
1715 	}
1716 
1717 	return 0;
1718 }
1719 
1720 static int af9035_init(struct dvb_usb_device *d)
1721 {
1722 	struct state *state = d_to_priv(d);
1723 	struct usb_interface *intf = d->intf;
1724 	int ret, i;
1725 	u16 frame_size = (d->udev->speed == USB_SPEED_FULL ? 5 : 87) * 188 / 4;
1726 	u8 packet_size = (d->udev->speed == USB_SPEED_FULL ? 64 : 512) / 4;
1727 	struct reg_val_mask tab[] = {
1728 		{ 0x80f99d, 0x01, 0x01 },
1729 		{ 0x80f9a4, 0x01, 0x01 },
1730 		{ 0x00dd11, 0x00, 0x20 },
1731 		{ 0x00dd11, 0x00, 0x40 },
1732 		{ 0x00dd13, 0x00, 0x20 },
1733 		{ 0x00dd13, 0x00, 0x40 },
1734 		{ 0x00dd11, 0x20, 0x20 },
1735 		{ 0x00dd88, (frame_size >> 0) & 0xff, 0xff},
1736 		{ 0x00dd89, (frame_size >> 8) & 0xff, 0xff},
1737 		{ 0x00dd0c, packet_size, 0xff},
1738 		{ 0x00dd11, state->dual_mode << 6, 0x40 },
1739 		{ 0x00dd8a, (frame_size >> 0) & 0xff, 0xff},
1740 		{ 0x00dd8b, (frame_size >> 8) & 0xff, 0xff},
1741 		{ 0x00dd0d, packet_size, 0xff },
1742 		{ 0x80f9a3, state->dual_mode, 0x01 },
1743 		{ 0x80f9cd, state->dual_mode, 0x01 },
1744 		{ 0x80f99d, 0x00, 0x01 },
1745 		{ 0x80f9a4, 0x00, 0x01 },
1746 	};
1747 
1748 	dev_dbg(&intf->dev, "USB speed=%d frame_size=%04x packet_size=%02x\n",
1749 		d->udev->speed, frame_size, packet_size);
1750 
1751 	/* init endpoints */
1752 	for (i = 0; i < ARRAY_SIZE(tab); i++) {
1753 		ret = af9035_wr_reg_mask(d, tab[i].reg, tab[i].val,
1754 				tab[i].mask);
1755 		if (ret < 0)
1756 			goto err;
1757 	}
1758 
1759 	return 0;
1760 
1761 err:
1762 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1763 
1764 	return ret;
1765 }
1766 
1767 static int it930x_init(struct dvb_usb_device *d)
1768 {
1769 	struct state *state = d_to_priv(d);
1770 	struct usb_interface *intf = d->intf;
1771 	int ret, i;
1772 	u16 frame_size = (d->udev->speed == USB_SPEED_FULL ? 5 : 816) * 188 / 4;
1773 	u8 packet_size = (d->udev->speed == USB_SPEED_FULL ? 64 : 512) / 4;
1774 	struct reg_val_mask tab[] = {
1775 		{ 0x00da1a, 0x00, 0x01 }, /* ignore_sync_byte */
1776 		{ 0x00f41f, 0x04, 0x04 }, /* dvbt_inten */
1777 		{ 0x00da10, 0x00, 0x01 }, /* mpeg_full_speed */
1778 		{ 0x00f41a, 0x01, 0x01 }, /* dvbt_en */
1779 		{ 0x00da1d, 0x01, 0x01 }, /* mp2_sw_rst, reset EP4 */
1780 		{ 0x00dd11, 0x00, 0x20 }, /* ep4_tx_en, disable EP4 */
1781 		{ 0x00dd13, 0x00, 0x20 }, /* ep4_tx_nak, disable EP4 NAK */
1782 		{ 0x00dd11, 0x20, 0x20 }, /* ep4_tx_en, enable EP4 */
1783 		{ 0x00dd11, 0x00, 0x40 }, /* ep5_tx_en, disable EP5 */
1784 		{ 0x00dd13, 0x00, 0x40 }, /* ep5_tx_nak, disable EP5 NAK */
1785 		{ 0x00dd11, state->dual_mode << 6, 0x40 }, /* enable EP5 */
1786 		{ 0x00dd88, (frame_size >> 0) & 0xff, 0xff},
1787 		{ 0x00dd89, (frame_size >> 8) & 0xff, 0xff},
1788 		{ 0x00dd0c, packet_size, 0xff},
1789 		{ 0x00dd8a, (frame_size >> 0) & 0xff, 0xff},
1790 		{ 0x00dd8b, (frame_size >> 8) & 0xff, 0xff},
1791 		{ 0x00dd0d, packet_size, 0xff },
1792 		{ 0x00da1d, 0x00, 0x01 }, /* mp2_sw_rst, disable */
1793 		{ 0x00d833, 0x01, 0xff }, /* slew rate ctrl: slew rate boosts */
1794 		{ 0x00d830, 0x00, 0xff }, /* Bit 0 of output driving control */
1795 		{ 0x00d831, 0x01, 0xff }, /* Bit 1 of output driving control */
1796 		{ 0x00d832, 0x00, 0xff }, /* Bit 2 of output driving control */
1797 
1798 		/* suspend gpio1 for TS-C */
1799 		{ 0x00d8b0, 0x01, 0xff }, /* gpio1 */
1800 		{ 0x00d8b1, 0x01, 0xff }, /* gpio1 */
1801 		{ 0x00d8af, 0x00, 0xff }, /* gpio1 */
1802 
1803 		/* suspend gpio7 for TS-D */
1804 		{ 0x00d8c4, 0x01, 0xff }, /* gpio7 */
1805 		{ 0x00d8c5, 0x01, 0xff }, /* gpio7 */
1806 		{ 0x00d8c3, 0x00, 0xff }, /* gpio7 */
1807 
1808 		/* suspend gpio13 for TS-B */
1809 		{ 0x00d8dc, 0x01, 0xff }, /* gpio13 */
1810 		{ 0x00d8dd, 0x01, 0xff }, /* gpio13 */
1811 		{ 0x00d8db, 0x00, 0xff }, /* gpio13 */
1812 
1813 		/* suspend gpio14 for TS-E */
1814 		{ 0x00d8e4, 0x01, 0xff }, /* gpio14 */
1815 		{ 0x00d8e5, 0x01, 0xff }, /* gpio14 */
1816 		{ 0x00d8e3, 0x00, 0xff }, /* gpio14 */
1817 
1818 		/* suspend gpio15 for TS-A */
1819 		{ 0x00d8e8, 0x01, 0xff }, /* gpio15 */
1820 		{ 0x00d8e9, 0x01, 0xff }, /* gpio15 */
1821 		{ 0x00d8e7, 0x00, 0xff }, /* gpio15 */
1822 
1823 		{ 0x00da58, 0x00, 0x01 }, /* ts_in_src, serial */
1824 		{ 0x00da73, 0x01, 0xff }, /* ts0_aggre_mode */
1825 		{ 0x00da78, 0x47, 0xff }, /* ts0_sync_byte */
1826 		{ 0x00da4c, 0x01, 0xff }, /* ts0_en */
1827 		{ 0x00da5a, 0x1f, 0xff }, /* ts_fail_ignore */
1828 	};
1829 
1830 	dev_dbg(&intf->dev, "USB speed=%d frame_size=%04x packet_size=%02x\n",
1831 		d->udev->speed, frame_size, packet_size);
1832 
1833 	/* init endpoints */
1834 	for (i = 0; i < ARRAY_SIZE(tab); i++) {
1835 		ret = af9035_wr_reg_mask(d, tab[i].reg,
1836 				tab[i].val, tab[i].mask);
1837 
1838 		if (ret < 0)
1839 			goto err;
1840 	}
1841 
1842 	return 0;
1843 err:
1844 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1845 
1846 	return ret;
1847 }
1848 
1849 
1850 #if IS_ENABLED(CONFIG_RC_CORE)
1851 static int af9035_rc_query(struct dvb_usb_device *d)
1852 {
1853 	struct usb_interface *intf = d->intf;
1854 	int ret;
1855 	enum rc_proto proto;
1856 	u32 key;
1857 	u8 buf[4];
1858 	struct usb_req req = { CMD_IR_GET, 0, 0, NULL, 4, buf };
1859 
1860 	ret = af9035_ctrl_msg(d, &req);
1861 	if (ret == 1)
1862 		return 0;
1863 	else if (ret < 0)
1864 		goto err;
1865 
1866 	if ((buf[2] + buf[3]) == 0xff) {
1867 		if ((buf[0] + buf[1]) == 0xff) {
1868 			/* NEC standard 16bit */
1869 			key = RC_SCANCODE_NEC(buf[0], buf[2]);
1870 			proto = RC_PROTO_NEC;
1871 		} else {
1872 			/* NEC extended 24bit */
1873 			key = RC_SCANCODE_NECX(buf[0] << 8 | buf[1], buf[2]);
1874 			proto = RC_PROTO_NECX;
1875 		}
1876 	} else {
1877 		/* NEC full code 32bit */
1878 		key = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
1879 					buf[2] << 8  | buf[3]);
1880 		proto = RC_PROTO_NEC32;
1881 	}
1882 
1883 	dev_dbg(&intf->dev, "%*ph\n", 4, buf);
1884 
1885 	rc_keydown(d->rc_dev, proto, key, 0);
1886 
1887 	return 0;
1888 
1889 err:
1890 	dev_dbg(&intf->dev, "failed=%d\n", ret);
1891 
1892 	return ret;
1893 }
1894 
1895 static int af9035_get_rc_config(struct dvb_usb_device *d, struct dvb_usb_rc *rc)
1896 {
1897 	struct state *state = d_to_priv(d);
1898 	struct usb_interface *intf = d->intf;
1899 
1900 	dev_dbg(&intf->dev, "ir_mode=%02x ir_type=%02x\n",
1901 		state->ir_mode, state->ir_type);
1902 
1903 	/* don't activate rc if in HID mode or if not available */
1904 	if (state->ir_mode == 0x05) {
1905 		switch (state->ir_type) {
1906 		case 0: /* NEC */
1907 		default:
1908 			rc->allowed_protos = RC_PROTO_BIT_NEC |
1909 					RC_PROTO_BIT_NECX | RC_PROTO_BIT_NEC32;
1910 			break;
1911 		case 1: /* RC6 */
1912 			rc->allowed_protos = RC_PROTO_BIT_RC6_MCE;
1913 			break;
1914 		}
1915 
1916 		rc->query = af9035_rc_query;
1917 		rc->interval = 500;
1918 
1919 		/* load empty to enable rc */
1920 		if (!rc->map_name)
1921 			rc->map_name = RC_MAP_EMPTY;
1922 	}
1923 
1924 	return 0;
1925 }
1926 #else
1927 	#define af9035_get_rc_config NULL
1928 #endif
1929 
1930 static int af9035_get_stream_config(struct dvb_frontend *fe, u8 *ts_type,
1931 		struct usb_data_stream_properties *stream)
1932 {
1933 	struct dvb_usb_device *d = fe_to_d(fe);
1934 	struct usb_interface *intf = d->intf;
1935 
1936 	dev_dbg(&intf->dev, "adap=%d\n", fe_to_adap(fe)->id);
1937 
1938 	if (d->udev->speed == USB_SPEED_FULL)
1939 		stream->u.bulk.buffersize = 5 * 188;
1940 
1941 	return 0;
1942 }
1943 
1944 static int af9035_pid_filter_ctrl(struct dvb_usb_adapter *adap, int onoff)
1945 {
1946 	struct state *state = adap_to_priv(adap);
1947 
1948 	return state->ops.pid_filter_ctrl(adap->fe[0], onoff);
1949 }
1950 
1951 static int af9035_pid_filter(struct dvb_usb_adapter *adap, int index, u16 pid,
1952 		int onoff)
1953 {
1954 	struct state *state = adap_to_priv(adap);
1955 
1956 	return state->ops.pid_filter(adap->fe[0], index, pid, onoff);
1957 }
1958 
1959 static int af9035_probe(struct usb_interface *intf,
1960 		const struct usb_device_id *id)
1961 {
1962 	struct usb_device *udev = interface_to_usbdev(intf);
1963 	char manufacturer[sizeof("Afatech")];
1964 
1965 	memset(manufacturer, 0, sizeof(manufacturer));
1966 	usb_string(udev, udev->descriptor.iManufacturer,
1967 			manufacturer, sizeof(manufacturer));
1968 	/*
1969 	 * There is two devices having same ID but different chipset. One uses
1970 	 * AF9015 and the other IT9135 chipset. Only difference seen on lsusb
1971 	 * is iManufacturer string.
1972 	 *
1973 	 * idVendor           0x0ccd TerraTec Electronic GmbH
1974 	 * idProduct          0x0099
1975 	 * bcdDevice            2.00
1976 	 * iManufacturer           1 Afatech
1977 	 * iProduct                2 DVB-T 2
1978 	 *
1979 	 * idVendor           0x0ccd TerraTec Electronic GmbH
1980 	 * idProduct          0x0099
1981 	 * bcdDevice            2.00
1982 	 * iManufacturer           1 ITE Technologies, Inc.
1983 	 * iProduct                2 DVB-T TV Stick
1984 	 */
1985 	if ((le16_to_cpu(udev->descriptor.idVendor) == USB_VID_TERRATEC) &&
1986 			(le16_to_cpu(udev->descriptor.idProduct) == 0x0099)) {
1987 		if (!strcmp("Afatech", manufacturer)) {
1988 			dev_dbg(&udev->dev, "rejecting device\n");
1989 			return -ENODEV;
1990 		}
1991 	}
1992 
1993 	return dvb_usbv2_probe(intf, id);
1994 }
1995 
1996 /* interface 0 is used by DVB-T receiver and
1997    interface 1 is for remote controller (HID) */
1998 static const struct dvb_usb_device_properties af9035_props = {
1999 	.driver_name = KBUILD_MODNAME,
2000 	.owner = THIS_MODULE,
2001 	.adapter_nr = adapter_nr,
2002 	.size_of_priv = sizeof(struct state),
2003 
2004 	.generic_bulk_ctrl_endpoint = 0x02,
2005 	.generic_bulk_ctrl_endpoint_response = 0x81,
2006 
2007 	.identify_state = af9035_identify_state,
2008 	.download_firmware = af9035_download_firmware,
2009 
2010 	.i2c_algo = &af9035_i2c_algo,
2011 	.read_config = af9035_read_config,
2012 	.frontend_attach = af9035_frontend_attach,
2013 	.frontend_detach = af9035_frontend_detach,
2014 	.tuner_attach = af9035_tuner_attach,
2015 	.tuner_detach = af9035_tuner_detach,
2016 	.init = af9035_init,
2017 	.get_rc_config = af9035_get_rc_config,
2018 	.get_stream_config = af9035_get_stream_config,
2019 
2020 	.get_adapter_count = af9035_get_adapter_count,
2021 	.adapter = {
2022 		{
2023 			.caps = DVB_USB_ADAP_HAS_PID_FILTER |
2024 				DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
2025 
2026 			.pid_filter_count = 32,
2027 			.pid_filter_ctrl = af9035_pid_filter_ctrl,
2028 			.pid_filter = af9035_pid_filter,
2029 
2030 			.stream = DVB_USB_STREAM_BULK(0x84, 6, 87 * 188),
2031 		}, {
2032 			.caps = DVB_USB_ADAP_HAS_PID_FILTER |
2033 				DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
2034 
2035 			.pid_filter_count = 32,
2036 			.pid_filter_ctrl = af9035_pid_filter_ctrl,
2037 			.pid_filter = af9035_pid_filter,
2038 
2039 			.stream = DVB_USB_STREAM_BULK(0x85, 6, 87 * 188),
2040 		},
2041 	},
2042 };
2043 
2044 static const struct dvb_usb_device_properties it930x_props = {
2045 	.driver_name = KBUILD_MODNAME,
2046 	.owner = THIS_MODULE,
2047 	.adapter_nr = adapter_nr,
2048 	.size_of_priv = sizeof(struct state),
2049 
2050 	.generic_bulk_ctrl_endpoint = 0x02,
2051 	.generic_bulk_ctrl_endpoint_response = 0x81,
2052 
2053 	.identify_state = af9035_identify_state,
2054 	.download_firmware = af9035_download_firmware,
2055 
2056 	.i2c_algo = &af9035_i2c_algo,
2057 	.read_config = af9035_read_config,
2058 	.frontend_attach = it930x_frontend_attach,
2059 	.frontend_detach = af9035_frontend_detach,
2060 	.tuner_attach = it930x_tuner_attach,
2061 	.tuner_detach = it930x_tuner_detach,
2062 	.init = it930x_init,
2063 	.get_stream_config = af9035_get_stream_config,
2064 
2065 	.get_adapter_count = af9035_get_adapter_count,
2066 	.adapter = {
2067 		{
2068 			.stream = DVB_USB_STREAM_BULK(0x84, 4, 816 * 188),
2069 		}, {
2070 			.stream = DVB_USB_STREAM_BULK(0x85, 4, 816 * 188),
2071 		},
2072 	},
2073 };
2074 
2075 static const struct usb_device_id af9035_id_table[] = {
2076 	/* AF9035 devices */
2077 	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_9035,
2078 		&af9035_props, "Afatech AF9035 reference design", NULL) },
2079 	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_1000,
2080 		&af9035_props, "Afatech AF9035 reference design", NULL) },
2081 	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_1001,
2082 		&af9035_props, "Afatech AF9035 reference design", NULL) },
2083 	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_1002,
2084 		&af9035_props, "Afatech AF9035 reference design", NULL) },
2085 	{ DVB_USB_DEVICE(USB_VID_AFATECH, USB_PID_AFATECH_AF9035_1003,
2086 		&af9035_props, "Afatech AF9035 reference design", NULL) },
2087 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_STICK,
2088 		&af9035_props, "TerraTec Cinergy T Stick", NULL) },
2089 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835,
2090 		&af9035_props, "AVerMedia AVerTV Volar HD/PRO (A835)", NULL) },
2091 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_B835,
2092 		&af9035_props, "AVerMedia AVerTV Volar HD/PRO (A835)", NULL) },
2093 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_1867,
2094 		&af9035_props, "AVerMedia HD Volar (A867)", NULL) },
2095 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A867,
2096 		&af9035_props, "AVerMedia HD Volar (A867)", NULL) },
2097 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_TWINSTAR,
2098 		&af9035_props, "AVerMedia Twinstar (A825)", NULL) },
2099 	{ DVB_USB_DEVICE(USB_VID_ASUS, USB_PID_ASUS_U3100MINI_PLUS,
2100 		&af9035_props, "Asus U3100Mini Plus", NULL) },
2101 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00aa,
2102 		&af9035_props, "TerraTec Cinergy T Stick (rev. 2)", NULL) },
2103 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, 0x0337,
2104 		&af9035_props, "AVerMedia HD Volar (A867)", NULL) },
2105        { DVB_USB_DEVICE(USB_VID_GTEK, USB_PID_EVOLVEO_XTRATV_STICK,
2106 	       &af9035_props, "EVOLVEO XtraTV stick", NULL) },
2107 
2108 	/* IT9135 devices */
2109 	{ DVB_USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135,
2110 		&af9035_props, "ITE 9135 Generic", RC_MAP_IT913X_V1) },
2111 	{ DVB_USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135_9005,
2112 		&af9035_props, "ITE 9135(9005) Generic", RC_MAP_IT913X_V2) },
2113 	{ DVB_USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9135_9006,
2114 		&af9035_props, "ITE 9135(9006) Generic", RC_MAP_IT913X_V1) },
2115 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_1835,
2116 		&af9035_props, "Avermedia A835B(1835)", RC_MAP_IT913X_V2) },
2117 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_2835,
2118 		&af9035_props, "Avermedia A835B(2835)", RC_MAP_IT913X_V2) },
2119 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_3835,
2120 		&af9035_props, "Avermedia A835B(3835)", RC_MAP_IT913X_V2) },
2121 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A835B_4835,
2122 		&af9035_props, "Avermedia A835B(4835)",	RC_MAP_IT913X_V2) },
2123 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_TD110,
2124 		&af9035_props, "Avermedia AverTV Volar HD 2 (TD110)", RC_MAP_AVERMEDIA_RM_KS) },
2125 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_H335,
2126 		&af9035_props, "Avermedia H335", RC_MAP_IT913X_V2) },
2127 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_KWORLD_UB499_2T_T09,
2128 		&af9035_props, "Kworld UB499-2T T09", RC_MAP_IT913X_V1) },
2129 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_SVEON_STV22_IT9137,
2130 		&af9035_props, "Sveon STV22 Dual DVB-T HDTV",
2131 							RC_MAP_IT913X_V1) },
2132 	{ DVB_USB_DEVICE(USB_VID_KWORLD_2, USB_PID_CTVDIGDUAL_V2,
2133 		&af9035_props, "Digital Dual TV Receiver CTVDIGDUAL_V2",
2134 							RC_MAP_IT913X_V1) },
2135 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_T1,
2136 		&af9035_props, "TerraTec T1", RC_MAP_IT913X_V1) },
2137 	/* XXX: that same ID [0ccd:0099] is used by af9015 driver too */
2138 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, 0x0099,
2139 		&af9035_props, "TerraTec Cinergy T Stick Dual RC (rev. 2)",
2140 		NULL) },
2141 	{ DVB_USB_DEVICE(USB_VID_LEADTEK, 0x6a05,
2142 		&af9035_props, "Leadtek WinFast DTV Dongle Dual", NULL) },
2143 	{ DVB_USB_DEVICE(USB_VID_HAUPPAUGE, 0xf900,
2144 		&af9035_props, "Hauppauge WinTV-MiniStick 2", NULL) },
2145 	{ DVB_USB_DEVICE(USB_VID_PCTV, USB_PID_PCTV_78E,
2146 		&af9035_props, "PCTV AndroiDTV (78e)", RC_MAP_IT913X_V1) },
2147 	{ DVB_USB_DEVICE(USB_VID_PCTV, USB_PID_PCTV_79E,
2148 		&af9035_props, "PCTV microStick (79e)", RC_MAP_IT913X_V2) },
2149 
2150 	/* IT930x devices */
2151 	{ DVB_USB_DEVICE(USB_VID_ITETECH, USB_PID_ITETECH_IT9303,
2152 		&it930x_props, "ITE 9303 Generic", NULL) },
2153 	{ DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_TD310,
2154 		&it930x_props, "AVerMedia TD310 DVB-T2", NULL) },
2155 	{ DVB_USB_DEVICE(USB_VID_DEXATEK, 0x0100,
2156 		&it930x_props, "Logilink VG0022A", NULL) },
2157 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_TC2_STICK,
2158 		&it930x_props, "TerraTec Cinergy TC2 Stick", NULL) },
2159 	{ }
2160 };
2161 MODULE_DEVICE_TABLE(usb, af9035_id_table);
2162 
2163 static struct usb_driver af9035_usb_driver = {
2164 	.name = KBUILD_MODNAME,
2165 	.id_table = af9035_id_table,
2166 	.probe = af9035_probe,
2167 	.disconnect = dvb_usbv2_disconnect,
2168 	.suspend = dvb_usbv2_suspend,
2169 	.resume = dvb_usbv2_resume,
2170 	.reset_resume = dvb_usbv2_reset_resume,
2171 	.no_dynamic_id = 1,
2172 	.soft_unbind = 1,
2173 };
2174 
2175 module_usb_driver(af9035_usb_driver);
2176 
2177 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
2178 MODULE_DESCRIPTION("Afatech AF9035 driver");
2179 MODULE_LICENSE("GPL");
2180 MODULE_FIRMWARE(AF9035_FIRMWARE_AF9035);
2181 MODULE_FIRMWARE(AF9035_FIRMWARE_IT9135_V1);
2182 MODULE_FIRMWARE(AF9035_FIRMWARE_IT9135_V2);
2183 MODULE_FIRMWARE(AF9035_FIRMWARE_IT9303);
2184