1 /*
2  * Driver for AzureWave 6007 DVB-C/T USB2.0 and clones
3  *
4  * Copyright (c) Henry Wang <Henry.wang@AzureWave.com>
5  *
6  * This driver was made publicly available by Terratec, at:
7  *	http://linux.terratec.de/files/TERRATEC_H7/20110323_TERRATEC_H7_Linux.tar.gz
8  * The original driver's license is GPL, as declared with MODULE_LICENSE()
9  *
10  * Copyright (c) 2010-2012 Mauro Carvalho Chehab
11  *	Driver modified by in order to work with upstream drxk driver, and
12  *	tons of bugs got fixed, and converted to use dvb-usb-v2.
13  *
14  * This program is free software; you can redistribute it and/or modify
15  * it under the terms of the GNU General Public License as published by
16  * the Free Software Foundation under version 2 of the License.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21  * GNU General Public License for more details.
22  */
23 
24 #include "drxk.h"
25 #include "mt2063.h"
26 #include "dvb_ca_en50221.h"
27 #include "dvb_usb.h"
28 #include "cypress_firmware.h"
29 
30 #define AZ6007_FIRMWARE "dvb-usb-terratec-h7-az6007.fw"
31 
32 static int az6007_xfer_debug;
33 module_param_named(xfer_debug, az6007_xfer_debug, int, 0644);
34 MODULE_PARM_DESC(xfer_debug, "Enable xfer debug");
35 
36 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
37 
38 /* Known requests (Cypress FX2 firmware + az6007 "private" ones*/
39 
40 #define FX2_OED			0xb5
41 #define AZ6007_READ_DATA	0xb7
42 #define AZ6007_I2C_RD		0xb9
43 #define AZ6007_POWER		0xbc
44 #define AZ6007_I2C_WR		0xbd
45 #define FX2_SCON1		0xc0
46 #define AZ6007_TS_THROUGH	0xc7
47 #define AZ6007_READ_IR		0xb4
48 
49 struct az6007_device_state {
50 	struct mutex		mutex;
51 	struct mutex		ca_mutex;
52 	struct dvb_ca_en50221	ca;
53 	unsigned		warm:1;
54 	int			(*gate_ctrl) (struct dvb_frontend *, int);
55 	unsigned char		data[4096];
56 };
57 
58 static struct drxk_config terratec_h7_drxk = {
59 	.adr = 0x29,
60 	.parallel_ts = true,
61 	.dynamic_clk = true,
62 	.single_master = true,
63 	.enable_merr_cfg = true,
64 	.no_i2c_bridge = false,
65 	.chunk_size = 64,
66 	.mpeg_out_clk_strength = 0x02,
67 	.qam_demod_parameter_count = 2,
68 	.microcode_name = "dvb-usb-terratec-h7-drxk.fw",
69 };
70 
71 static struct drxk_config cablestar_hdci_drxk = {
72 	.adr = 0x29,
73 	.parallel_ts = true,
74 	.dynamic_clk = true,
75 	.single_master = true,
76 	.enable_merr_cfg = true,
77 	.no_i2c_bridge = false,
78 	.chunk_size = 64,
79 	.mpeg_out_clk_strength = 0x02,
80 	.qam_demod_parameter_count = 2,
81 	.microcode_name = "dvb-usb-technisat-cablestar-hdci-drxk.fw",
82 };
83 
84 static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
85 {
86 	struct az6007_device_state *st = fe_to_priv(fe);
87 	struct dvb_usb_adapter *adap = fe->sec_priv;
88 	int status = 0;
89 
90 	pr_debug("%s: %s\n", __func__, enable ? "enable" : "disable");
91 
92 	if (!adap || !st)
93 		return -EINVAL;
94 
95 	if (enable)
96 		status = st->gate_ctrl(fe, 1);
97 	else
98 		status = st->gate_ctrl(fe, 0);
99 
100 	return status;
101 }
102 
103 static struct mt2063_config az6007_mt2063_config = {
104 	.tuner_address = 0x60,
105 	.refclock = 36125000,
106 };
107 
108 static int __az6007_read(struct usb_device *udev, u8 req, u16 value,
109 			    u16 index, u8 *b, int blen)
110 {
111 	int ret;
112 
113 	ret = usb_control_msg(udev,
114 			      usb_rcvctrlpipe(udev, 0),
115 			      req,
116 			      USB_TYPE_VENDOR | USB_DIR_IN,
117 			      value, index, b, blen, 5000);
118 	if (ret < 0) {
119 		pr_warn("usb read operation failed. (%d)\n", ret);
120 		return -EIO;
121 	}
122 
123 	if (az6007_xfer_debug) {
124 		printk(KERN_DEBUG "az6007: IN  req: %02x, value: %04x, index: %04x\n",
125 		       req, value, index);
126 		print_hex_dump_bytes("az6007: payload: ",
127 				     DUMP_PREFIX_NONE, b, blen);
128 	}
129 
130 	return ret;
131 }
132 
133 static int az6007_read(struct dvb_usb_device *d, u8 req, u16 value,
134 			    u16 index, u8 *b, int blen)
135 {
136 	struct az6007_device_state *st = d->priv;
137 	int ret;
138 
139 	if (mutex_lock_interruptible(&st->mutex) < 0)
140 		return -EAGAIN;
141 
142 	ret = __az6007_read(d->udev, req, value, index, b, blen);
143 
144 	mutex_unlock(&st->mutex);
145 
146 	return ret;
147 }
148 
149 static int __az6007_write(struct usb_device *udev, u8 req, u16 value,
150 			     u16 index, u8 *b, int blen)
151 {
152 	int ret;
153 
154 	if (az6007_xfer_debug) {
155 		printk(KERN_DEBUG "az6007: OUT req: %02x, value: %04x, index: %04x\n",
156 		       req, value, index);
157 		print_hex_dump_bytes("az6007: payload: ",
158 				     DUMP_PREFIX_NONE, b, blen);
159 	}
160 
161 	if (blen > 64) {
162 		pr_err("az6007: tried to write %d bytes, but I2C max size is 64 bytes\n",
163 		       blen);
164 		return -EOPNOTSUPP;
165 	}
166 
167 	ret = usb_control_msg(udev,
168 			      usb_sndctrlpipe(udev, 0),
169 			      req,
170 			      USB_TYPE_VENDOR | USB_DIR_OUT,
171 			      value, index, b, blen, 5000);
172 	if (ret != blen) {
173 		pr_err("usb write operation failed. (%d)\n", ret);
174 		return -EIO;
175 	}
176 
177 	return 0;
178 }
179 
180 static int az6007_write(struct dvb_usb_device *d, u8 req, u16 value,
181 			    u16 index, u8 *b, int blen)
182 {
183 	struct az6007_device_state *st = d->priv;
184 	int ret;
185 
186 	if (mutex_lock_interruptible(&st->mutex) < 0)
187 		return -EAGAIN;
188 
189 	ret = __az6007_write(d->udev, req, value, index, b, blen);
190 
191 	mutex_unlock(&st->mutex);
192 
193 	return ret;
194 }
195 
196 static int az6007_streaming_ctrl(struct dvb_frontend *fe, int onoff)
197 {
198 	struct dvb_usb_device *d = fe_to_d(fe);
199 
200 	pr_debug("%s: %s\n", __func__, onoff ? "enable" : "disable");
201 
202 	return az6007_write(d, 0xbc, onoff, 0, NULL, 0);
203 }
204 
205 #if IS_ENABLED(CONFIG_RC_CORE)
206 /* remote control stuff (does not work with my box) */
207 static int az6007_rc_query(struct dvb_usb_device *d)
208 {
209 	struct az6007_device_state *st = d_to_priv(d);
210 	unsigned code;
211 
212 	az6007_read(d, AZ6007_READ_IR, 0, 0, st->data, 10);
213 
214 	if (st->data[1] == 0x44)
215 		return 0;
216 
217 	if ((st->data[3] ^ st->data[4]) == 0xff) {
218 		if ((st->data[1] ^ st->data[2]) == 0xff)
219 			code = RC_SCANCODE_NEC(st->data[1], st->data[3]);
220 		else
221 			code = RC_SCANCODE_NECX(st->data[1] << 8 | st->data[2],
222 						st->data[3]);
223 	} else {
224 		code = RC_SCANCODE_NEC32(st->data[1] << 24 |
225 					 st->data[2] << 16 |
226 					 st->data[3] << 8  |
227 					 st->data[4]);
228 	}
229 
230 	rc_keydown(d->rc_dev, RC_TYPE_NEC, code, st->data[5]);
231 
232 	return 0;
233 }
234 
235 static int az6007_get_rc_config(struct dvb_usb_device *d, struct dvb_usb_rc *rc)
236 {
237 	pr_debug("Getting az6007 Remote Control properties\n");
238 
239 	rc->allowed_protos = RC_BIT_NEC;
240 	rc->query          = az6007_rc_query;
241 	rc->interval       = 400;
242 
243 	return 0;
244 }
245 #else
246 	#define az6007_get_rc_config NULL
247 #endif
248 
249 static int az6007_ci_read_attribute_mem(struct dvb_ca_en50221 *ca,
250 					int slot,
251 					int address)
252 {
253 	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
254 	struct az6007_device_state *state = d_to_priv(d);
255 
256 	int ret;
257 	u8 req;
258 	u16 value;
259 	u16 index;
260 	int blen;
261 	u8 *b;
262 
263 	if (slot != 0)
264 		return -EINVAL;
265 
266 	b = kmalloc(12, GFP_KERNEL);
267 	if (!b)
268 		return -ENOMEM;
269 
270 	mutex_lock(&state->ca_mutex);
271 
272 	req = 0xC1;
273 	value = address;
274 	index = 0;
275 	blen = 1;
276 
277 	ret = az6007_read(d, req, value, index, b, blen);
278 	if (ret < 0) {
279 		pr_warn("usb in operation failed. (%d)\n", ret);
280 		ret = -EINVAL;
281 	} else {
282 		ret = b[0];
283 	}
284 
285 	mutex_unlock(&state->ca_mutex);
286 	kfree(b);
287 	return ret;
288 }
289 
290 static int az6007_ci_write_attribute_mem(struct dvb_ca_en50221 *ca,
291 					 int slot,
292 					 int address,
293 					 u8 value)
294 {
295 	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
296 	struct az6007_device_state *state = d_to_priv(d);
297 
298 	int ret;
299 	u8 req;
300 	u16 value1;
301 	u16 index;
302 	int blen;
303 
304 	pr_debug("%s(), slot %d\n", __func__, slot);
305 	if (slot != 0)
306 		return -EINVAL;
307 
308 	mutex_lock(&state->ca_mutex);
309 	req = 0xC2;
310 	value1 = address;
311 	index = value;
312 	blen = 0;
313 
314 	ret = az6007_write(d, req, value1, index, NULL, blen);
315 	if (ret != 0)
316 		pr_warn("usb out operation failed. (%d)\n", ret);
317 
318 	mutex_unlock(&state->ca_mutex);
319 	return ret;
320 }
321 
322 static int az6007_ci_read_cam_control(struct dvb_ca_en50221 *ca,
323 				      int slot,
324 				      u8 address)
325 {
326 	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
327 	struct az6007_device_state *state = d_to_priv(d);
328 
329 	int ret;
330 	u8 req;
331 	u16 value;
332 	u16 index;
333 	int blen;
334 	u8 *b;
335 
336 	if (slot != 0)
337 		return -EINVAL;
338 
339 	b = kmalloc(12, GFP_KERNEL);
340 	if (!b)
341 		return -ENOMEM;
342 
343 	mutex_lock(&state->ca_mutex);
344 
345 	req = 0xC3;
346 	value = address;
347 	index = 0;
348 	blen = 2;
349 
350 	ret = az6007_read(d, req, value, index, b, blen);
351 	if (ret < 0) {
352 		pr_warn("usb in operation failed. (%d)\n", ret);
353 		ret = -EINVAL;
354 	} else {
355 		if (b[0] == 0)
356 			pr_warn("Read CI IO error\n");
357 
358 		ret = b[1];
359 		pr_debug("read cam data = %x from 0x%x\n", b[1], value);
360 	}
361 
362 	mutex_unlock(&state->ca_mutex);
363 	kfree(b);
364 	return ret;
365 }
366 
367 static int az6007_ci_write_cam_control(struct dvb_ca_en50221 *ca,
368 				       int slot,
369 				       u8 address,
370 				       u8 value)
371 {
372 	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
373 	struct az6007_device_state *state = d_to_priv(d);
374 
375 	int ret;
376 	u8 req;
377 	u16 value1;
378 	u16 index;
379 	int blen;
380 
381 	if (slot != 0)
382 		return -EINVAL;
383 
384 	mutex_lock(&state->ca_mutex);
385 	req = 0xC4;
386 	value1 = address;
387 	index = value;
388 	blen = 0;
389 
390 	ret = az6007_write(d, req, value1, index, NULL, blen);
391 	if (ret != 0) {
392 		pr_warn("usb out operation failed. (%d)\n", ret);
393 		goto failed;
394 	}
395 
396 failed:
397 	mutex_unlock(&state->ca_mutex);
398 	return ret;
399 }
400 
401 static int CI_CamReady(struct dvb_ca_en50221 *ca, int slot)
402 {
403 	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
404 
405 	int ret;
406 	u8 req;
407 	u16 value;
408 	u16 index;
409 	int blen;
410 	u8 *b;
411 
412 	b = kmalloc(12, GFP_KERNEL);
413 	if (!b)
414 		return -ENOMEM;
415 
416 	req = 0xC8;
417 	value = 0;
418 	index = 0;
419 	blen = 1;
420 
421 	ret = az6007_read(d, req, value, index, b, blen);
422 	if (ret < 0) {
423 		pr_warn("usb in operation failed. (%d)\n", ret);
424 		ret = -EIO;
425 	} else{
426 		ret = b[0];
427 	}
428 	kfree(b);
429 	return ret;
430 }
431 
432 static int az6007_ci_slot_reset(struct dvb_ca_en50221 *ca, int slot)
433 {
434 	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
435 	struct az6007_device_state *state = d_to_priv(d);
436 
437 	int ret, i;
438 	u8 req;
439 	u16 value;
440 	u16 index;
441 	int blen;
442 
443 	mutex_lock(&state->ca_mutex);
444 
445 	req = 0xC6;
446 	value = 1;
447 	index = 0;
448 	blen = 0;
449 
450 	ret = az6007_write(d, req, value, index, NULL, blen);
451 	if (ret != 0) {
452 		pr_warn("usb out operation failed. (%d)\n", ret);
453 		goto failed;
454 	}
455 
456 	msleep(500);
457 	req = 0xC6;
458 	value = 0;
459 	index = 0;
460 	blen = 0;
461 
462 	ret = az6007_write(d, req, value, index, NULL, blen);
463 	if (ret != 0) {
464 		pr_warn("usb out operation failed. (%d)\n", ret);
465 		goto failed;
466 	}
467 
468 	for (i = 0; i < 15; i++) {
469 		msleep(100);
470 
471 		if (CI_CamReady(ca, slot)) {
472 			pr_debug("CAM Ready\n");
473 			break;
474 		}
475 	}
476 	msleep(5000);
477 
478 failed:
479 	mutex_unlock(&state->ca_mutex);
480 	return ret;
481 }
482 
483 static int az6007_ci_slot_shutdown(struct dvb_ca_en50221 *ca, int slot)
484 {
485 	return 0;
486 }
487 
488 static int az6007_ci_slot_ts_enable(struct dvb_ca_en50221 *ca, int slot)
489 {
490 	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
491 	struct az6007_device_state *state = d_to_priv(d);
492 
493 	int ret;
494 	u8 req;
495 	u16 value;
496 	u16 index;
497 	int blen;
498 
499 	pr_debug("%s()\n", __func__);
500 	mutex_lock(&state->ca_mutex);
501 	req = 0xC7;
502 	value = 1;
503 	index = 0;
504 	blen = 0;
505 
506 	ret = az6007_write(d, req, value, index, NULL, blen);
507 	if (ret != 0) {
508 		pr_warn("usb out operation failed. (%d)\n", ret);
509 		goto failed;
510 	}
511 
512 failed:
513 	mutex_unlock(&state->ca_mutex);
514 	return ret;
515 }
516 
517 static int az6007_ci_poll_slot_status(struct dvb_ca_en50221 *ca, int slot, int open)
518 {
519 	struct dvb_usb_device *d = (struct dvb_usb_device *)ca->data;
520 	struct az6007_device_state *state = d_to_priv(d);
521 	int ret;
522 	u8 req;
523 	u16 value;
524 	u16 index;
525 	int blen;
526 	u8 *b;
527 
528 	b = kmalloc(12, GFP_KERNEL);
529 	if (!b)
530 		return -ENOMEM;
531 	mutex_lock(&state->ca_mutex);
532 
533 	req = 0xC5;
534 	value = 0;
535 	index = 0;
536 	blen = 1;
537 
538 	ret = az6007_read(d, req, value, index, b, blen);
539 	if (ret < 0) {
540 		pr_warn("usb in operation failed. (%d)\n", ret);
541 		ret = -EIO;
542 	} else
543 		ret = 0;
544 
545 	if (!ret && b[0] == 1) {
546 		ret = DVB_CA_EN50221_POLL_CAM_PRESENT |
547 		      DVB_CA_EN50221_POLL_CAM_READY;
548 	}
549 
550 	mutex_unlock(&state->ca_mutex);
551 	kfree(b);
552 	return ret;
553 }
554 
555 
556 static void az6007_ci_uninit(struct dvb_usb_device *d)
557 {
558 	struct az6007_device_state *state;
559 
560 	pr_debug("%s()\n", __func__);
561 
562 	if (NULL == d)
563 		return;
564 
565 	state = d_to_priv(d);
566 	if (NULL == state)
567 		return;
568 
569 	if (NULL == state->ca.data)
570 		return;
571 
572 	dvb_ca_en50221_release(&state->ca);
573 
574 	memset(&state->ca, 0, sizeof(state->ca));
575 }
576 
577 
578 static int az6007_ci_init(struct dvb_usb_adapter *adap)
579 {
580 	struct dvb_usb_device *d = adap_to_d(adap);
581 	struct az6007_device_state *state = adap_to_priv(adap);
582 	int ret;
583 
584 	pr_debug("%s()\n", __func__);
585 
586 	mutex_init(&state->ca_mutex);
587 	state->ca.owner			= THIS_MODULE;
588 	state->ca.read_attribute_mem	= az6007_ci_read_attribute_mem;
589 	state->ca.write_attribute_mem	= az6007_ci_write_attribute_mem;
590 	state->ca.read_cam_control	= az6007_ci_read_cam_control;
591 	state->ca.write_cam_control	= az6007_ci_write_cam_control;
592 	state->ca.slot_reset		= az6007_ci_slot_reset;
593 	state->ca.slot_shutdown		= az6007_ci_slot_shutdown;
594 	state->ca.slot_ts_enable	= az6007_ci_slot_ts_enable;
595 	state->ca.poll_slot_status	= az6007_ci_poll_slot_status;
596 	state->ca.data			= d;
597 
598 	ret = dvb_ca_en50221_init(&adap->dvb_adap,
599 				  &state->ca,
600 				  0, /* flags */
601 				  1);/* n_slots */
602 	if (ret != 0) {
603 		pr_err("Cannot initialize CI: Error %d.\n", ret);
604 		memset(&state->ca, 0, sizeof(state->ca));
605 		return ret;
606 	}
607 
608 	pr_debug("CI initialized.\n");
609 
610 	return 0;
611 }
612 
613 static int az6007_read_mac_addr(struct dvb_usb_adapter *adap, u8 mac[6])
614 {
615 	struct dvb_usb_device *d = adap_to_d(adap);
616 	struct az6007_device_state *st = adap_to_priv(adap);
617 	int ret;
618 
619 	ret = az6007_read(d, AZ6007_READ_DATA, 6, 0, st->data, 6);
620 	memcpy(mac, st->data, 6);
621 
622 	if (ret > 0)
623 		pr_debug("%s: mac is %pM\n", __func__, mac);
624 
625 	return ret;
626 }
627 
628 static int az6007_frontend_attach(struct dvb_usb_adapter *adap)
629 {
630 	struct az6007_device_state *st = adap_to_priv(adap);
631 	struct dvb_usb_device *d = adap_to_d(adap);
632 
633 	pr_debug("attaching demod drxk\n");
634 
635 	adap->fe[0] = dvb_attach(drxk_attach, &terratec_h7_drxk,
636 				 &d->i2c_adap);
637 	if (!adap->fe[0])
638 		return -EINVAL;
639 
640 	adap->fe[0]->sec_priv = adap;
641 	st->gate_ctrl = adap->fe[0]->ops.i2c_gate_ctrl;
642 	adap->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
643 
644 	az6007_ci_init(adap);
645 
646 	return 0;
647 }
648 
649 static int az6007_cablestar_hdci_frontend_attach(struct dvb_usb_adapter *adap)
650 {
651 	struct az6007_device_state *st = adap_to_priv(adap);
652 	struct dvb_usb_device *d = adap_to_d(adap);
653 
654 	pr_debug("attaching demod drxk\n");
655 
656 	adap->fe[0] = dvb_attach(drxk_attach, &cablestar_hdci_drxk,
657 				 &d->i2c_adap);
658 	if (!adap->fe[0])
659 		return -EINVAL;
660 
661 	adap->fe[0]->sec_priv = adap;
662 	st->gate_ctrl = adap->fe[0]->ops.i2c_gate_ctrl;
663 	adap->fe[0]->ops.i2c_gate_ctrl = drxk_gate_ctrl;
664 
665 	az6007_ci_init(adap);
666 
667 	return 0;
668 }
669 
670 static int az6007_tuner_attach(struct dvb_usb_adapter *adap)
671 {
672 	struct dvb_usb_device *d = adap_to_d(adap);
673 
674 	pr_debug("attaching tuner mt2063\n");
675 
676 	/* Attach mt2063 to DVB-C frontend */
677 	if (adap->fe[0]->ops.i2c_gate_ctrl)
678 		adap->fe[0]->ops.i2c_gate_ctrl(adap->fe[0], 1);
679 	if (!dvb_attach(mt2063_attach, adap->fe[0],
680 			&az6007_mt2063_config,
681 			&d->i2c_adap))
682 		return -EINVAL;
683 
684 	if (adap->fe[0]->ops.i2c_gate_ctrl)
685 		adap->fe[0]->ops.i2c_gate_ctrl(adap->fe[0], 0);
686 
687 	return 0;
688 }
689 
690 static int az6007_power_ctrl(struct dvb_usb_device *d, int onoff)
691 {
692 	struct az6007_device_state *state = d_to_priv(d);
693 	int ret;
694 
695 	pr_debug("%s()\n", __func__);
696 
697 	if (!state->warm) {
698 		mutex_init(&state->mutex);
699 
700 		ret = az6007_write(d, AZ6007_POWER, 0, 2, NULL, 0);
701 		if (ret < 0)
702 			return ret;
703 		msleep(60);
704 		ret = az6007_write(d, AZ6007_POWER, 1, 4, NULL, 0);
705 		if (ret < 0)
706 			return ret;
707 		msleep(100);
708 		ret = az6007_write(d, AZ6007_POWER, 1, 3, NULL, 0);
709 		if (ret < 0)
710 			return ret;
711 		msleep(20);
712 		ret = az6007_write(d, AZ6007_POWER, 1, 4, NULL, 0);
713 		if (ret < 0)
714 			return ret;
715 
716 		msleep(400);
717 		ret = az6007_write(d, FX2_SCON1, 0, 3, NULL, 0);
718 		if (ret < 0)
719 			return ret;
720 		msleep(150);
721 		ret = az6007_write(d, FX2_SCON1, 1, 3, NULL, 0);
722 		if (ret < 0)
723 			return ret;
724 		msleep(430);
725 		ret = az6007_write(d, AZ6007_POWER, 0, 0, NULL, 0);
726 		if (ret < 0)
727 			return ret;
728 
729 		state->warm = true;
730 
731 		return 0;
732 	}
733 
734 	if (!onoff)
735 		return 0;
736 
737 	az6007_write(d, AZ6007_POWER, 0, 0, NULL, 0);
738 	az6007_write(d, AZ6007_TS_THROUGH, 0, 0, NULL, 0);
739 
740 	return 0;
741 }
742 
743 /* I2C */
744 static int az6007_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
745 			   int num)
746 {
747 	struct dvb_usb_device *d = i2c_get_adapdata(adap);
748 	struct az6007_device_state *st = d_to_priv(d);
749 	int i, j, len;
750 	int ret = 0;
751 	u16 index;
752 	u16 value;
753 	int length;
754 	u8 req, addr;
755 
756 	if (mutex_lock_interruptible(&st->mutex) < 0)
757 		return -EAGAIN;
758 
759 	for (i = 0; i < num; i++) {
760 		addr = msgs[i].addr << 1;
761 		if (((i + 1) < num)
762 		    && (msgs[i].len == 1)
763 		    && ((msgs[i].flags & I2C_M_RD) != I2C_M_RD)
764 		    && (msgs[i + 1].flags & I2C_M_RD)
765 		    && (msgs[i].addr == msgs[i + 1].addr)) {
766 			/*
767 			 * A write + read xfer for the same address, where
768 			 * the first xfer has just 1 byte length.
769 			 * Need to join both into one operation
770 			 */
771 			if (az6007_xfer_debug)
772 				printk(KERN_DEBUG "az6007: I2C W/R addr=0x%x len=%d/%d\n",
773 				       addr, msgs[i].len, msgs[i + 1].len);
774 			req = AZ6007_I2C_RD;
775 			index = msgs[i].buf[0];
776 			value = addr | (1 << 8);
777 			length = 6 + msgs[i + 1].len;
778 			len = msgs[i + 1].len;
779 			ret = __az6007_read(d->udev, req, value, index,
780 					    st->data, length);
781 			if (ret >= len) {
782 				for (j = 0; j < len; j++)
783 					msgs[i + 1].buf[j] = st->data[j + 5];
784 			} else
785 				ret = -EIO;
786 			i++;
787 		} else if (!(msgs[i].flags & I2C_M_RD)) {
788 			/* write bytes */
789 			if (az6007_xfer_debug)
790 				printk(KERN_DEBUG "az6007: I2C W addr=0x%x len=%d\n",
791 				       addr, msgs[i].len);
792 			req = AZ6007_I2C_WR;
793 			index = msgs[i].buf[0];
794 			value = addr | (1 << 8);
795 			length = msgs[i].len - 1;
796 			len = msgs[i].len - 1;
797 			for (j = 0; j < len; j++)
798 				st->data[j] = msgs[i].buf[j + 1];
799 			ret =  __az6007_write(d->udev, req, value, index,
800 					      st->data, length);
801 		} else {
802 			/* read bytes */
803 			if (az6007_xfer_debug)
804 				printk(KERN_DEBUG "az6007: I2C R addr=0x%x len=%d\n",
805 				       addr, msgs[i].len);
806 			req = AZ6007_I2C_RD;
807 			index = msgs[i].buf[0];
808 			value = addr;
809 			length = msgs[i].len + 6;
810 			len = msgs[i].len;
811 			ret = __az6007_read(d->udev, req, value, index,
812 					    st->data, length);
813 			for (j = 0; j < len; j++)
814 				msgs[i].buf[j] = st->data[j + 5];
815 		}
816 		if (ret < 0)
817 			goto err;
818 	}
819 err:
820 	mutex_unlock(&st->mutex);
821 
822 	if (ret < 0) {
823 		pr_info("%s ERROR: %i\n", __func__, ret);
824 		return ret;
825 	}
826 	return num;
827 }
828 
829 static u32 az6007_i2c_func(struct i2c_adapter *adapter)
830 {
831 	return I2C_FUNC_I2C;
832 }
833 
834 static struct i2c_algorithm az6007_i2c_algo = {
835 	.master_xfer = az6007_i2c_xfer,
836 	.functionality = az6007_i2c_func,
837 };
838 
839 static int az6007_identify_state(struct dvb_usb_device *d, const char **name)
840 {
841 	int ret;
842 	u8 *mac;
843 
844 	pr_debug("Identifying az6007 state\n");
845 
846 	mac = kmalloc(6, GFP_ATOMIC);
847 	if (!mac)
848 		return -ENOMEM;
849 
850 	/* Try to read the mac address */
851 	ret = __az6007_read(d->udev, AZ6007_READ_DATA, 6, 0, mac, 6);
852 	if (ret == 6)
853 		ret = WARM;
854 	else
855 		ret = COLD;
856 
857 	kfree(mac);
858 
859 	if (ret == COLD) {
860 		__az6007_write(d->udev, 0x09, 1, 0, NULL, 0);
861 		__az6007_write(d->udev, 0x00, 0, 0, NULL, 0);
862 		__az6007_write(d->udev, 0x00, 0, 0, NULL, 0);
863 	}
864 
865 	pr_debug("Device is on %s state\n",
866 		 ret == WARM ? "warm" : "cold");
867 	return ret;
868 }
869 
870 static void az6007_usb_disconnect(struct usb_interface *intf)
871 {
872 	struct dvb_usb_device *d = usb_get_intfdata(intf);
873 	az6007_ci_uninit(d);
874 	dvb_usbv2_disconnect(intf);
875 }
876 
877 static int az6007_download_firmware(struct dvb_usb_device *d,
878 	const struct firmware *fw)
879 {
880 	pr_debug("Loading az6007 firmware\n");
881 
882 	return cypress_load_firmware(d->udev, fw, CYPRESS_FX2);
883 }
884 
885 /* DVB USB Driver stuff */
886 static struct dvb_usb_device_properties az6007_props = {
887 	.driver_name         = KBUILD_MODNAME,
888 	.owner               = THIS_MODULE,
889 	.firmware            = AZ6007_FIRMWARE,
890 
891 	.adapter_nr          = adapter_nr,
892 	.size_of_priv        = sizeof(struct az6007_device_state),
893 	.i2c_algo            = &az6007_i2c_algo,
894 	.tuner_attach        = az6007_tuner_attach,
895 	.frontend_attach     = az6007_frontend_attach,
896 	.streaming_ctrl      = az6007_streaming_ctrl,
897 	.get_rc_config       = az6007_get_rc_config,
898 	.read_mac_address    = az6007_read_mac_addr,
899 	.download_firmware   = az6007_download_firmware,
900 	.identify_state	     = az6007_identify_state,
901 	.power_ctrl          = az6007_power_ctrl,
902 	.num_adapters        = 1,
903 	.adapter             = {
904 		{ .stream = DVB_USB_STREAM_BULK(0x02, 10, 4096), }
905 	}
906 };
907 
908 static struct dvb_usb_device_properties az6007_cablestar_hdci_props = {
909 	.driver_name         = KBUILD_MODNAME,
910 	.owner               = THIS_MODULE,
911 	.firmware            = AZ6007_FIRMWARE,
912 
913 	.adapter_nr          = adapter_nr,
914 	.size_of_priv        = sizeof(struct az6007_device_state),
915 	.i2c_algo            = &az6007_i2c_algo,
916 	.tuner_attach        = az6007_tuner_attach,
917 	.frontend_attach     = az6007_cablestar_hdci_frontend_attach,
918 	.streaming_ctrl      = az6007_streaming_ctrl,
919 /* ditch get_rc_config as it can't work (TS35 remote, I believe it's rc5) */
920 	.get_rc_config       = NULL,
921 	.read_mac_address    = az6007_read_mac_addr,
922 	.download_firmware   = az6007_download_firmware,
923 	.identify_state	     = az6007_identify_state,
924 	.power_ctrl          = az6007_power_ctrl,
925 	.num_adapters        = 1,
926 	.adapter             = {
927 		{ .stream = DVB_USB_STREAM_BULK(0x02, 10, 4096), }
928 	}
929 };
930 
931 static struct usb_device_id az6007_usb_table[] = {
932 	{DVB_USB_DEVICE(USB_VID_AZUREWAVE, USB_PID_AZUREWAVE_6007,
933 		&az6007_props, "Azurewave 6007", RC_MAP_EMPTY)},
934 	{DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_H7,
935 		&az6007_props, "Terratec H7", RC_MAP_NEC_TERRATEC_CINERGY_XS)},
936 	{DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_H7_2,
937 		&az6007_props, "Terratec H7", RC_MAP_NEC_TERRATEC_CINERGY_XS)},
938 	{DVB_USB_DEVICE(USB_VID_TECHNISAT, USB_PID_TECHNISAT_USB2_CABLESTAR_HDCI,
939 		&az6007_cablestar_hdci_props, "Technisat CableStar Combo HD CI", RC_MAP_EMPTY)},
940 	{0},
941 };
942 
943 MODULE_DEVICE_TABLE(usb, az6007_usb_table);
944 
945 static int az6007_suspend(struct usb_interface *intf, pm_message_t msg)
946 {
947 	struct dvb_usb_device *d = usb_get_intfdata(intf);
948 
949 	az6007_ci_uninit(d);
950 	return dvb_usbv2_suspend(intf, msg);
951 }
952 
953 static int az6007_resume(struct usb_interface *intf)
954 {
955 	struct dvb_usb_device *d = usb_get_intfdata(intf);
956 	struct dvb_usb_adapter *adap = &d->adapter[0];
957 
958 	az6007_ci_init(adap);
959 	return dvb_usbv2_resume(intf);
960 }
961 
962 /* usb specific object needed to register this driver with the usb subsystem */
963 static struct usb_driver az6007_usb_driver = {
964 	.name		= KBUILD_MODNAME,
965 	.id_table	= az6007_usb_table,
966 	.probe		= dvb_usbv2_probe,
967 	.disconnect	= az6007_usb_disconnect,
968 	.no_dynamic_id	= 1,
969 	.soft_unbind	= 1,
970 	/*
971 	 * FIXME: need to implement reset_resume, likely with
972 	 * dvb-usb-v2 core support
973 	 */
974 	.suspend	= az6007_suspend,
975 	.resume		= az6007_resume,
976 };
977 
978 module_usb_driver(az6007_usb_driver);
979 
980 MODULE_AUTHOR("Henry Wang <Henry.wang@AzureWave.com>");
981 MODULE_AUTHOR("Mauro Carvalho Chehab");
982 MODULE_DESCRIPTION("Driver for AzureWave 6007 DVB-C/T USB2.0 and clones");
983 MODULE_VERSION("2.0");
984 MODULE_LICENSE("GPL");
985 MODULE_FIRMWARE(AZ6007_FIRMWARE);
986