1 /*
2  * descriptions + helper functions for simple dvb plls.
3  *
4  * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms of the GNU General Public License as published by
8  *  the Free Software Foundation; either version 2 of the License, or
9  *  (at your option) any later version.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19  */
20 
21 #include <linux/slab.h>
22 #include <linux/module.h>
23 #include <linux/dvb/frontend.h>
24 #include <asm/types.h>
25 
26 #include "dvb-pll.h"
27 
28 struct dvb_pll_priv {
29 	/* pll number */
30 	int nr;
31 
32 	/* i2c details */
33 	int pll_i2c_address;
34 	struct i2c_adapter *i2c;
35 
36 	/* the PLL descriptor */
37 	const struct dvb_pll_desc *pll_desc;
38 
39 	/* cached frequency/bandwidth */
40 	u32 frequency;
41 	u32 bandwidth;
42 };
43 
44 #define DVB_PLL_MAX 64
45 
46 static unsigned int dvb_pll_devcount;
47 
48 static int debug;
49 module_param(debug, int, 0644);
50 MODULE_PARM_DESC(debug, "enable verbose debug messages");
51 
52 static unsigned int id[DVB_PLL_MAX] =
53 	{ [ 0 ... (DVB_PLL_MAX-1) ] = DVB_PLL_UNDEFINED };
54 module_param_array(id, int, NULL, 0644);
55 MODULE_PARM_DESC(id, "force pll id to use (DEBUG ONLY)");
56 
57 /* ----------------------------------------------------------- */
58 
59 struct dvb_pll_desc {
60 	const char *name;
61 	u32  min;
62 	u32  max;
63 	u32  iffreq;
64 	void (*set)(struct dvb_frontend *fe, u8 *buf);
65 	u8   *initdata;
66 	u8   *initdata2;
67 	u8   *sleepdata;
68 	int  count;
69 	struct {
70 		u32 limit;
71 		u32 stepsize;
72 		u8  config;
73 		u8  cb;
74 	} entries[];
75 };
76 
77 /* ----------------------------------------------------------- */
78 /* descriptions                                                */
79 
80 static const struct dvb_pll_desc dvb_pll_thomson_dtt7579 = {
81 	.name  = "Thomson dtt7579",
82 	.min   = 177000000,
83 	.max   = 858000000,
84 	.iffreq= 36166667,
85 	.sleepdata = (u8[]){ 2, 0xb4, 0x03 },
86 	.count = 4,
87 	.entries = {
88 		{  443250000, 166667, 0xb4, 0x02 },
89 		{  542000000, 166667, 0xb4, 0x08 },
90 		{  771000000, 166667, 0xbc, 0x08 },
91 		{  999999999, 166667, 0xf4, 0x08 },
92 	},
93 };
94 
95 static void thomson_dtt759x_bw(struct dvb_frontend *fe, u8 *buf)
96 {
97 	u32 bw = fe->dtv_property_cache.bandwidth_hz;
98 	if (bw == 7000000)
99 		buf[3] |= 0x10;
100 }
101 
102 static const struct dvb_pll_desc dvb_pll_thomson_dtt759x = {
103 	.name  = "Thomson dtt759x",
104 	.min   = 177000000,
105 	.max   = 896000000,
106 	.set   = thomson_dtt759x_bw,
107 	.iffreq= 36166667,
108 	.sleepdata = (u8[]){ 2, 0x84, 0x03 },
109 	.count = 5,
110 	.entries = {
111 		{  264000000, 166667, 0xb4, 0x02 },
112 		{  470000000, 166667, 0xbc, 0x02 },
113 		{  735000000, 166667, 0xbc, 0x08 },
114 		{  835000000, 166667, 0xf4, 0x08 },
115 		{  999999999, 166667, 0xfc, 0x08 },
116 	},
117 };
118 
119 static void thomson_dtt7520x_bw(struct dvb_frontend *fe, u8 *buf)
120 {
121 	u32 bw = fe->dtv_property_cache.bandwidth_hz;
122 	if (bw == 8000000)
123 		buf[3] ^= 0x10;
124 }
125 
126 static const struct dvb_pll_desc dvb_pll_thomson_dtt7520x = {
127 	.name  = "Thomson dtt7520x",
128 	.min   = 185000000,
129 	.max   = 900000000,
130 	.set   = thomson_dtt7520x_bw,
131 	.iffreq = 36166667,
132 	.count = 7,
133 	.entries = {
134 		{  305000000, 166667, 0xb4, 0x12 },
135 		{  405000000, 166667, 0xbc, 0x12 },
136 		{  445000000, 166667, 0xbc, 0x12 },
137 		{  465000000, 166667, 0xf4, 0x18 },
138 		{  735000000, 166667, 0xfc, 0x18 },
139 		{  835000000, 166667, 0xbc, 0x18 },
140 		{  999999999, 166667, 0xfc, 0x18 },
141 	},
142 };
143 
144 static const struct dvb_pll_desc dvb_pll_lg_z201 = {
145 	.name  = "LG z201",
146 	.min   = 174000000,
147 	.max   = 862000000,
148 	.iffreq= 36166667,
149 	.sleepdata = (u8[]){ 2, 0xbc, 0x03 },
150 	.count = 5,
151 	.entries = {
152 		{  157500000, 166667, 0xbc, 0x01 },
153 		{  443250000, 166667, 0xbc, 0x02 },
154 		{  542000000, 166667, 0xbc, 0x04 },
155 		{  830000000, 166667, 0xf4, 0x04 },
156 		{  999999999, 166667, 0xfc, 0x04 },
157 	},
158 };
159 
160 static const struct dvb_pll_desc dvb_pll_unknown_1 = {
161 	.name  = "unknown 1", /* used by dntv live dvb-t */
162 	.min   = 174000000,
163 	.max   = 862000000,
164 	.iffreq= 36166667,
165 	.count = 9,
166 	.entries = {
167 		{  150000000, 166667, 0xb4, 0x01 },
168 		{  173000000, 166667, 0xbc, 0x01 },
169 		{  250000000, 166667, 0xb4, 0x02 },
170 		{  400000000, 166667, 0xbc, 0x02 },
171 		{  420000000, 166667, 0xf4, 0x02 },
172 		{  470000000, 166667, 0xfc, 0x02 },
173 		{  600000000, 166667, 0xbc, 0x08 },
174 		{  730000000, 166667, 0xf4, 0x08 },
175 		{  999999999, 166667, 0xfc, 0x08 },
176 	},
177 };
178 
179 /* Infineon TUA6010XS
180  * used in Thomson Cable Tuner
181  */
182 static const struct dvb_pll_desc dvb_pll_tua6010xs = {
183 	.name  = "Infineon TUA6010XS",
184 	.min   =  44250000,
185 	.max   = 858000000,
186 	.iffreq= 36125000,
187 	.count = 3,
188 	.entries = {
189 		{  115750000, 62500, 0x8e, 0x03 },
190 		{  403250000, 62500, 0x8e, 0x06 },
191 		{  999999999, 62500, 0x8e, 0x85 },
192 	},
193 };
194 
195 /* Panasonic env57h1xd5 (some Philips PLL ?) */
196 static const struct dvb_pll_desc dvb_pll_env57h1xd5 = {
197 	.name  = "Panasonic ENV57H1XD5",
198 	.min   =  44250000,
199 	.max   = 858000000,
200 	.iffreq= 36125000,
201 	.count = 4,
202 	.entries = {
203 		{  153000000, 166667, 0xc2, 0x41 },
204 		{  470000000, 166667, 0xc2, 0x42 },
205 		{  526000000, 166667, 0xc2, 0x84 },
206 		{  999999999, 166667, 0xc2, 0xa4 },
207 	},
208 };
209 
210 /* Philips TDA6650/TDA6651
211  * used in Panasonic ENV77H11D5
212  */
213 static void tda665x_bw(struct dvb_frontend *fe, u8 *buf)
214 {
215 	u32 bw = fe->dtv_property_cache.bandwidth_hz;
216 	if (bw == 8000000)
217 		buf[3] |= 0x08;
218 }
219 
220 static const struct dvb_pll_desc dvb_pll_tda665x = {
221 	.name  = "Philips TDA6650/TDA6651",
222 	.min   =  44250000,
223 	.max   = 858000000,
224 	.set   = tda665x_bw,
225 	.iffreq= 36166667,
226 	.initdata = (u8[]){ 4, 0x0b, 0xf5, 0x85, 0xab },
227 	.count = 12,
228 	.entries = {
229 		{   93834000, 166667, 0xca, 0x61 /* 011 0 0 0  01 */ },
230 		{  123834000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
231 		{  161000000, 166667, 0xca, 0xa1 /* 101 0 0 0  01 */ },
232 		{  163834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
233 		{  253834000, 166667, 0xca, 0x62 /* 011 0 0 0  10 */ },
234 		{  383834000, 166667, 0xca, 0xa2 /* 101 0 0 0  10 */ },
235 		{  443834000, 166667, 0xca, 0xc2 /* 110 0 0 0  10 */ },
236 		{  444000000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
237 		{  583834000, 166667, 0xca, 0x64 /* 011 0 0 1  00 */ },
238 		{  793834000, 166667, 0xca, 0xa4 /* 101 0 0 1  00 */ },
239 		{  444834000, 166667, 0xca, 0xc4 /* 110 0 0 1  00 */ },
240 		{  861000000, 166667, 0xca, 0xe4 /* 111 0 0 1  00 */ },
241 	}
242 };
243 
244 /* Infineon TUA6034
245  * used in LG TDTP E102P
246  */
247 static void tua6034_bw(struct dvb_frontend *fe, u8 *buf)
248 {
249 	u32 bw = fe->dtv_property_cache.bandwidth_hz;
250 	if (bw == 7000000)
251 		buf[3] |= 0x08;
252 }
253 
254 static const struct dvb_pll_desc dvb_pll_tua6034 = {
255 	.name  = "Infineon TUA6034",
256 	.min   =  44250000,
257 	.max   = 858000000,
258 	.iffreq= 36166667,
259 	.count = 3,
260 	.set   = tua6034_bw,
261 	.entries = {
262 		{  174500000, 62500, 0xce, 0x01 },
263 		{  230000000, 62500, 0xce, 0x02 },
264 		{  999999999, 62500, 0xce, 0x04 },
265 	},
266 };
267 
268 /* ALPS TDED4
269  * used in Nebula-Cards and USB boxes
270  */
271 static void tded4_bw(struct dvb_frontend *fe, u8 *buf)
272 {
273 	u32 bw = fe->dtv_property_cache.bandwidth_hz;
274 	if (bw == 8000000)
275 		buf[3] |= 0x04;
276 }
277 
278 static const struct dvb_pll_desc dvb_pll_tded4 = {
279 	.name = "ALPS TDED4",
280 	.min = 47000000,
281 	.max = 863000000,
282 	.iffreq= 36166667,
283 	.set   = tded4_bw,
284 	.count = 4,
285 	.entries = {
286 		{ 153000000, 166667, 0x85, 0x01 },
287 		{ 470000000, 166667, 0x85, 0x02 },
288 		{ 823000000, 166667, 0x85, 0x08 },
289 		{ 999999999, 166667, 0x85, 0x88 },
290 	}
291 };
292 
293 /* ALPS TDHU2
294  * used in AverTVHD MCE A180
295  */
296 static const struct dvb_pll_desc dvb_pll_tdhu2 = {
297 	.name = "ALPS TDHU2",
298 	.min = 54000000,
299 	.max = 864000000,
300 	.iffreq= 44000000,
301 	.count = 4,
302 	.entries = {
303 		{ 162000000, 62500, 0x85, 0x01 },
304 		{ 426000000, 62500, 0x85, 0x02 },
305 		{ 782000000, 62500, 0x85, 0x08 },
306 		{ 999999999, 62500, 0x85, 0x88 },
307 	}
308 };
309 
310 /* Samsung TBMV30111IN / TBMV30712IN1
311  * used in Air2PC ATSC - 2nd generation (nxt2002)
312  */
313 static const struct dvb_pll_desc dvb_pll_samsung_tbmv = {
314 	.name = "Samsung TBMV30111IN / TBMV30712IN1",
315 	.min = 54000000,
316 	.max = 860000000,
317 	.iffreq= 44000000,
318 	.count = 6,
319 	.entries = {
320 		{ 172000000, 166667, 0xb4, 0x01 },
321 		{ 214000000, 166667, 0xb4, 0x02 },
322 		{ 467000000, 166667, 0xbc, 0x02 },
323 		{ 721000000, 166667, 0xbc, 0x08 },
324 		{ 841000000, 166667, 0xf4, 0x08 },
325 		{ 999999999, 166667, 0xfc, 0x02 },
326 	}
327 };
328 
329 /*
330  * Philips SD1878 Tuner.
331  */
332 static const struct dvb_pll_desc dvb_pll_philips_sd1878_tda8261 = {
333 	.name  = "Philips SD1878",
334 	.min   =  950000,
335 	.max   = 2150000,
336 	.iffreq= 249, /* zero-IF, offset 249 is to round up */
337 	.count = 4,
338 	.entries = {
339 		{ 1250000, 500, 0xc4, 0x00},
340 		{ 1450000, 500, 0xc4, 0x40},
341 		{ 2050000, 500, 0xc4, 0x80},
342 		{ 2150000, 500, 0xc4, 0xc0},
343 	},
344 };
345 
346 static void opera1_bw(struct dvb_frontend *fe, u8 *buf)
347 {
348 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
349 	struct dvb_pll_priv *priv = fe->tuner_priv;
350 	u32 b_w  = (c->symbol_rate * 27) / 32000;
351 	struct i2c_msg msg = {
352 		.addr = priv->pll_i2c_address,
353 		.flags = 0,
354 		.buf = buf,
355 		.len = 4
356 	};
357 	int result;
358 	u8 lpf;
359 
360 	if (fe->ops.i2c_gate_ctrl)
361 		fe->ops.i2c_gate_ctrl(fe, 1);
362 
363 	result = i2c_transfer(priv->i2c, &msg, 1);
364 	if (result != 1)
365 		printk(KERN_ERR "%s: i2c_transfer failed:%d",
366 			__func__, result);
367 
368 	if (b_w <= 10000)
369 		lpf = 0xc;
370 	else if (b_w <= 12000)
371 		lpf = 0x2;
372 	else if (b_w <= 14000)
373 		lpf = 0xa;
374 	else if (b_w <= 16000)
375 		lpf = 0x6;
376 	else if (b_w <= 18000)
377 		lpf = 0xe;
378 	else if (b_w <= 20000)
379 		lpf = 0x1;
380 	else if (b_w <= 22000)
381 		lpf = 0x9;
382 	else if (b_w <= 24000)
383 		lpf = 0x5;
384 	else if (b_w <= 26000)
385 		lpf = 0xd;
386 	else if (b_w <= 28000)
387 		lpf = 0x3;
388 		else
389 		lpf = 0xb;
390 	buf[2] ^= 0x1c; /* Flip bits 3-5 */
391 	/* Set lpf */
392 	buf[2] |= ((lpf >> 2) & 0x3) << 3;
393 	buf[3] |= (lpf & 0x3) << 2;
394 
395 	return;
396 }
397 
398 static const struct dvb_pll_desc dvb_pll_opera1 = {
399 	.name  = "Opera Tuner",
400 	.min   =  900000,
401 	.max   = 2250000,
402 	.initdata = (u8[]){ 4, 0x08, 0xe5, 0xe1, 0x00 },
403 	.initdata2 = (u8[]){ 4, 0x08, 0xe5, 0xe5, 0x00 },
404 	.iffreq= 0,
405 	.set   = opera1_bw,
406 	.count = 8,
407 	.entries = {
408 		{ 1064000, 500, 0xf9, 0xc2 },
409 		{ 1169000, 500, 0xf9, 0xe2 },
410 		{ 1299000, 500, 0xf9, 0x20 },
411 		{ 1444000, 500, 0xf9, 0x40 },
412 		{ 1606000, 500, 0xf9, 0x60 },
413 		{ 1777000, 500, 0xf9, 0x80 },
414 		{ 1941000, 500, 0xf9, 0xa0 },
415 		{ 2250000, 500, 0xf9, 0xc0 },
416 	}
417 };
418 
419 static void samsung_dtos403ih102a_set(struct dvb_frontend *fe, u8 *buf)
420 {
421 	struct dvb_pll_priv *priv = fe->tuner_priv;
422 	struct i2c_msg msg = {
423 		.addr = priv->pll_i2c_address,
424 		.flags = 0,
425 		.buf = buf,
426 		.len = 4
427 	};
428 	int result;
429 
430 	if (fe->ops.i2c_gate_ctrl)
431 		fe->ops.i2c_gate_ctrl(fe, 1);
432 
433 	result = i2c_transfer(priv->i2c, &msg, 1);
434 	if (result != 1)
435 		printk(KERN_ERR "%s: i2c_transfer failed:%d",
436 			__func__, result);
437 
438 	buf[2] = 0x9e;
439 	buf[3] = 0x90;
440 
441 	return;
442 }
443 
444 /* unknown pll used in Samsung DTOS403IH102A DVB-C tuner */
445 static const struct dvb_pll_desc dvb_pll_samsung_dtos403ih102a = {
446 	.name   = "Samsung DTOS403IH102A",
447 	.min    =  44250000,
448 	.max    = 858000000,
449 	.iffreq =  36125000,
450 	.count  = 8,
451 	.set    = samsung_dtos403ih102a_set,
452 	.entries = {
453 		{ 135000000, 62500, 0xbe, 0x01 },
454 		{ 177000000, 62500, 0xf6, 0x01 },
455 		{ 370000000, 62500, 0xbe, 0x02 },
456 		{ 450000000, 62500, 0xf6, 0x02 },
457 		{ 466000000, 62500, 0xfe, 0x02 },
458 		{ 538000000, 62500, 0xbe, 0x08 },
459 		{ 826000000, 62500, 0xf6, 0x08 },
460 		{ 999999999, 62500, 0xfe, 0x08 },
461 	}
462 };
463 
464 /* Samsung TDTC9251DH0 DVB-T NIM, as used on AirStar 2 */
465 static const struct dvb_pll_desc dvb_pll_samsung_tdtc9251dh0 = {
466 	.name	= "Samsung TDTC9251DH0",
467 	.min	=  48000000,
468 	.max	= 863000000,
469 	.iffreq	=  36166667,
470 	.count	= 3,
471 	.entries = {
472 		{ 157500000, 166667, 0xcc, 0x09 },
473 		{ 443000000, 166667, 0xcc, 0x0a },
474 		{ 863000000, 166667, 0xcc, 0x08 },
475 	}
476 };
477 
478 /* Samsung TBDU18132 DVB-S NIM with TSA5059 PLL, used in SkyStar2 DVB-S 2.3 */
479 static const struct dvb_pll_desc dvb_pll_samsung_tbdu18132 = {
480 	.name = "Samsung TBDU18132",
481 	.min	=  950000,
482 	.max	= 2150000, /* guesses */
483 	.iffreq = 0,
484 	.count = 2,
485 	.entries = {
486 		{ 1550000, 125, 0x84, 0x82 },
487 		{ 4095937, 125, 0x84, 0x80 },
488 	}
489 	/* TSA5059 PLL has a 17 bit divisor rather than the 15 bits supported
490 	 * by this driver.  The two extra bits are 0x60 in the third byte.  15
491 	 * bits is enough for over 4 GHz, which is enough to cover the range
492 	 * of this tuner.  We could use the additional divisor bits by adding
493 	 * more entries, e.g.
494 	 { 0x0ffff * 125 + 125/2, 125, 0x84 | 0x20, },
495 	 { 0x17fff * 125 + 125/2, 125, 0x84 | 0x40, },
496 	 { 0x1ffff * 125 + 125/2, 125, 0x84 | 0x60, }, */
497 };
498 
499 /* Samsung TBMU24112 DVB-S NIM with SL1935 zero-IF tuner */
500 static const struct dvb_pll_desc dvb_pll_samsung_tbmu24112 = {
501 	.name = "Samsung TBMU24112",
502 	.min	=  950000,
503 	.max	= 2150000, /* guesses */
504 	.iffreq = 0,
505 	.count = 2,
506 	.entries = {
507 		{ 1500000, 125, 0x84, 0x18 },
508 		{ 9999999, 125, 0x84, 0x08 },
509 	}
510 };
511 
512 /* Alps TDEE4 DVB-C NIM, used on Cablestar 2 */
513 /* byte 4 : 1  *   *   AGD R3  R2  R1  R0
514  * byte 5 : C1 *   RE  RTS BS4 BS3 BS2 BS1
515  * AGD = 1, R3 R2 R1 R0 = 0 1 0 1 => byte 4 = 1**10101 = 0x95
516  * Range(MHz)  C1 *  RE RTS BS4 BS3 BS2 BS1  Byte 5
517  *  47 - 153   0  *  0   0   0   0   0   1   0x01
518  * 153 - 430   0  *  0   0   0   0   1   0   0x02
519  * 430 - 822   0  *  0   0   1   0   0   0   0x08
520  * 822 - 862   1  *  0   0   1   0   0   0   0x88 */
521 static const struct dvb_pll_desc dvb_pll_alps_tdee4 = {
522 	.name = "ALPS TDEE4",
523 	.min	=  47000000,
524 	.max	= 862000000,
525 	.iffreq	=  36125000,
526 	.count = 4,
527 	.entries = {
528 		{ 153000000, 62500, 0x95, 0x01 },
529 		{ 430000000, 62500, 0x95, 0x02 },
530 		{ 822000000, 62500, 0x95, 0x08 },
531 		{ 999999999, 62500, 0x95, 0x88 },
532 	}
533 };
534 
535 /* ----------------------------------------------------------- */
536 
537 static const struct dvb_pll_desc *pll_list[] = {
538 	[DVB_PLL_UNDEFINED]              = NULL,
539 	[DVB_PLL_THOMSON_DTT7579]        = &dvb_pll_thomson_dtt7579,
540 	[DVB_PLL_THOMSON_DTT759X]        = &dvb_pll_thomson_dtt759x,
541 	[DVB_PLL_THOMSON_DTT7520X]       = &dvb_pll_thomson_dtt7520x,
542 	[DVB_PLL_LG_Z201]                = &dvb_pll_lg_z201,
543 	[DVB_PLL_UNKNOWN_1]              = &dvb_pll_unknown_1,
544 	[DVB_PLL_TUA6010XS]              = &dvb_pll_tua6010xs,
545 	[DVB_PLL_ENV57H1XD5]             = &dvb_pll_env57h1xd5,
546 	[DVB_PLL_TUA6034]                = &dvb_pll_tua6034,
547 	[DVB_PLL_TDA665X]                = &dvb_pll_tda665x,
548 	[DVB_PLL_TDED4]                  = &dvb_pll_tded4,
549 	[DVB_PLL_TDEE4]                  = &dvb_pll_alps_tdee4,
550 	[DVB_PLL_TDHU2]                  = &dvb_pll_tdhu2,
551 	[DVB_PLL_SAMSUNG_TBMV]           = &dvb_pll_samsung_tbmv,
552 	[DVB_PLL_PHILIPS_SD1878_TDA8261] = &dvb_pll_philips_sd1878_tda8261,
553 	[DVB_PLL_OPERA1]                 = &dvb_pll_opera1,
554 	[DVB_PLL_SAMSUNG_DTOS403IH102A]  = &dvb_pll_samsung_dtos403ih102a,
555 	[DVB_PLL_SAMSUNG_TDTC9251DH0]    = &dvb_pll_samsung_tdtc9251dh0,
556 	[DVB_PLL_SAMSUNG_TBDU18132]	 = &dvb_pll_samsung_tbdu18132,
557 	[DVB_PLL_SAMSUNG_TBMU24112]      = &dvb_pll_samsung_tbmu24112,
558 };
559 
560 /* ----------------------------------------------------------- */
561 /* code                                                        */
562 
563 static int dvb_pll_configure(struct dvb_frontend *fe, u8 *buf,
564 			     const u32 frequency)
565 {
566 	struct dvb_pll_priv *priv = fe->tuner_priv;
567 	const struct dvb_pll_desc *desc = priv->pll_desc;
568 	u32 div;
569 	int i;
570 
571 	if (frequency && (frequency < desc->min || frequency > desc->max))
572 		return -EINVAL;
573 
574 	for (i = 0; i < desc->count; i++) {
575 		if (frequency > desc->entries[i].limit)
576 			continue;
577 		break;
578 	}
579 
580 	if (debug)
581 		printk("pll: %s: freq=%d | i=%d/%d\n", desc->name,
582 		       frequency, i, desc->count);
583 	if (i == desc->count)
584 		return -EINVAL;
585 
586 	div = (frequency + desc->iffreq +
587 	       desc->entries[i].stepsize/2) / desc->entries[i].stepsize;
588 	buf[0] = div >> 8;
589 	buf[1] = div & 0xff;
590 	buf[2] = desc->entries[i].config;
591 	buf[3] = desc->entries[i].cb;
592 
593 	if (desc->set)
594 		desc->set(fe, buf);
595 
596 	if (debug)
597 		printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n",
598 		       desc->name, div, buf[0], buf[1], buf[2], buf[3]);
599 
600 	// calculate the frequency we set it to
601 	return (div * desc->entries[i].stepsize) - desc->iffreq;
602 }
603 
604 static int dvb_pll_release(struct dvb_frontend *fe)
605 {
606 	kfree(fe->tuner_priv);
607 	fe->tuner_priv = NULL;
608 	return 0;
609 }
610 
611 static int dvb_pll_sleep(struct dvb_frontend *fe)
612 {
613 	struct dvb_pll_priv *priv = fe->tuner_priv;
614 
615 	if (priv->i2c == NULL)
616 		return -EINVAL;
617 
618 	if (priv->pll_desc->sleepdata) {
619 		struct i2c_msg msg = { .flags = 0,
620 			.addr = priv->pll_i2c_address,
621 			.buf = priv->pll_desc->sleepdata + 1,
622 			.len = priv->pll_desc->sleepdata[0] };
623 
624 		int result;
625 
626 		if (fe->ops.i2c_gate_ctrl)
627 			fe->ops.i2c_gate_ctrl(fe, 1);
628 		if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
629 			return result;
630 		}
631 		return 0;
632 	}
633 	/* Shouldn't be called when initdata is NULL, maybe BUG()? */
634 	return -EINVAL;
635 }
636 
637 static int dvb_pll_set_params(struct dvb_frontend *fe)
638 {
639 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
640 	struct dvb_pll_priv *priv = fe->tuner_priv;
641 	u8 buf[4];
642 	struct i2c_msg msg =
643 		{ .addr = priv->pll_i2c_address, .flags = 0,
644 		  .buf = buf, .len = sizeof(buf) };
645 	int result;
646 	u32 frequency = 0;
647 
648 	if (priv->i2c == NULL)
649 		return -EINVAL;
650 
651 	result = dvb_pll_configure(fe, buf, c->frequency);
652 	if (result < 0)
653 		return result;
654 	else
655 		frequency = result;
656 
657 	if (fe->ops.i2c_gate_ctrl)
658 		fe->ops.i2c_gate_ctrl(fe, 1);
659 	if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
660 		return result;
661 	}
662 
663 	priv->frequency = frequency;
664 	priv->bandwidth = c->bandwidth_hz;
665 
666 	return 0;
667 }
668 
669 static int dvb_pll_calc_regs(struct dvb_frontend *fe,
670 			     u8 *buf, int buf_len)
671 {
672 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
673 	struct dvb_pll_priv *priv = fe->tuner_priv;
674 	int result;
675 	u32 frequency = 0;
676 
677 	if (buf_len < 5)
678 		return -EINVAL;
679 
680 	result = dvb_pll_configure(fe, buf + 1, c->frequency);
681 	if (result < 0)
682 		return result;
683 	else
684 		frequency = result;
685 
686 	buf[0] = priv->pll_i2c_address;
687 
688 	priv->frequency = frequency;
689 	priv->bandwidth = c->bandwidth_hz;
690 
691 	return 5;
692 }
693 
694 static int dvb_pll_get_frequency(struct dvb_frontend *fe, u32 *frequency)
695 {
696 	struct dvb_pll_priv *priv = fe->tuner_priv;
697 	*frequency = priv->frequency;
698 	return 0;
699 }
700 
701 static int dvb_pll_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
702 {
703 	struct dvb_pll_priv *priv = fe->tuner_priv;
704 	*bandwidth = priv->bandwidth;
705 	return 0;
706 }
707 
708 static int dvb_pll_init(struct dvb_frontend *fe)
709 {
710 	struct dvb_pll_priv *priv = fe->tuner_priv;
711 
712 	if (priv->i2c == NULL)
713 		return -EINVAL;
714 
715 	if (priv->pll_desc->initdata) {
716 		struct i2c_msg msg = { .flags = 0,
717 			.addr = priv->pll_i2c_address,
718 			.buf = priv->pll_desc->initdata + 1,
719 			.len = priv->pll_desc->initdata[0] };
720 
721 		int result;
722 		if (fe->ops.i2c_gate_ctrl)
723 			fe->ops.i2c_gate_ctrl(fe, 1);
724 		result = i2c_transfer(priv->i2c, &msg, 1);
725 		if (result != 1)
726 			return result;
727 		if (priv->pll_desc->initdata2) {
728 			msg.buf = priv->pll_desc->initdata2 + 1;
729 			msg.len = priv->pll_desc->initdata2[0];
730 			if (fe->ops.i2c_gate_ctrl)
731 				fe->ops.i2c_gate_ctrl(fe, 1);
732 			result = i2c_transfer(priv->i2c, &msg, 1);
733 			if (result != 1)
734 				return result;
735 		}
736 		return 0;
737 	}
738 	/* Shouldn't be called when initdata is NULL, maybe BUG()? */
739 	return -EINVAL;
740 }
741 
742 static struct dvb_tuner_ops dvb_pll_tuner_ops = {
743 	.release = dvb_pll_release,
744 	.sleep = dvb_pll_sleep,
745 	.init = dvb_pll_init,
746 	.set_params = dvb_pll_set_params,
747 	.calc_regs = dvb_pll_calc_regs,
748 	.get_frequency = dvb_pll_get_frequency,
749 	.get_bandwidth = dvb_pll_get_bandwidth,
750 };
751 
752 struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr,
753 				    struct i2c_adapter *i2c,
754 				    unsigned int pll_desc_id)
755 {
756 	u8 b1 [] = { 0 };
757 	struct i2c_msg msg = { .addr = pll_addr, .flags = I2C_M_RD,
758 			       .buf = b1, .len = 1 };
759 	struct dvb_pll_priv *priv = NULL;
760 	int ret;
761 	const struct dvb_pll_desc *desc;
762 
763 	if ((id[dvb_pll_devcount] > DVB_PLL_UNDEFINED) &&
764 	    (id[dvb_pll_devcount] < ARRAY_SIZE(pll_list)))
765 		pll_desc_id = id[dvb_pll_devcount];
766 
767 	BUG_ON(pll_desc_id < 1 || pll_desc_id >= ARRAY_SIZE(pll_list));
768 
769 	desc = pll_list[pll_desc_id];
770 
771 	if (i2c != NULL) {
772 		if (fe->ops.i2c_gate_ctrl)
773 			fe->ops.i2c_gate_ctrl(fe, 1);
774 
775 		ret = i2c_transfer (i2c, &msg, 1);
776 		if (ret != 1)
777 			return NULL;
778 		if (fe->ops.i2c_gate_ctrl)
779 			     fe->ops.i2c_gate_ctrl(fe, 0);
780 	}
781 
782 	priv = kzalloc(sizeof(struct dvb_pll_priv), GFP_KERNEL);
783 	if (priv == NULL)
784 		return NULL;
785 
786 	priv->pll_i2c_address = pll_addr;
787 	priv->i2c = i2c;
788 	priv->pll_desc = desc;
789 	priv->nr = dvb_pll_devcount++;
790 
791 	memcpy(&fe->ops.tuner_ops, &dvb_pll_tuner_ops,
792 	       sizeof(struct dvb_tuner_ops));
793 
794 	strncpy(fe->ops.tuner_ops.info.name, desc->name,
795 		sizeof(fe->ops.tuner_ops.info.name));
796 	fe->ops.tuner_ops.info.frequency_min = desc->min;
797 	fe->ops.tuner_ops.info.frequency_max = desc->max;
798 	if (!desc->initdata)
799 		fe->ops.tuner_ops.init = NULL;
800 	if (!desc->sleepdata)
801 		fe->ops.tuner_ops.sleep = NULL;
802 
803 	fe->tuner_priv = priv;
804 
805 	if ((debug) || (id[priv->nr] == pll_desc_id)) {
806 		printk("dvb-pll[%d]", priv->nr);
807 		if (i2c != NULL)
808 			printk(" %d-%04x", i2c_adapter_id(i2c), pll_addr);
809 		printk(": id# %d (%s) attached, %s\n", pll_desc_id, desc->name,
810 		       id[priv->nr] == pll_desc_id ?
811 				"insmod option" : "autodetected");
812 	}
813 
814 	return fe;
815 }
816 EXPORT_SYMBOL(dvb_pll_attach);
817 
818 MODULE_DESCRIPTION("dvb pll library");
819 MODULE_AUTHOR("Gerd Knorr");
820 MODULE_LICENSE("GPL");
821