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stb0899_drv.c
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1 /*
2  STB0899 Multistandard Frontend driver
3  Copyright (C) Manu Abraham ([email protected])
4 
5  Copyright (C) ST Microelectronics
6 
7  This program is free software; you can redistribute it and/or modify
8  it under the terms of the GNU General Public License as published by
9  the Free Software Foundation; either version 2 of the License, or
10  (at your option) any later version.
11 
12  This program is distributed in the hope that it will be useful,
13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  GNU General Public License for more details.
16 
17  You should have received a copy of the GNU General Public License
18  along with this program; if not, write to the Free Software
19  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21 
22 #include <linux/init.h>
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/slab.h>
26 #include <linux/string.h>
27 
28 #include <linux/dvb/frontend.h>
29 #include "dvb_frontend.h"
30 
31 #include "stb0899_drv.h"
32 #include "stb0899_priv.h"
33 #include "stb0899_reg.h"
34 
35 static unsigned int verbose = 0;//1;
36 module_param(verbose, int, 0644);
37 
38 /* C/N in dB/10, NIRM/NIRL */
39 static const struct stb0899_tab stb0899_cn_tab[] = {
40  { 200, 2600 },
41  { 190, 2700 },
42  { 180, 2860 },
43  { 170, 3020 },
44  { 160, 3210 },
45  { 150, 3440 },
46  { 140, 3710 },
47  { 130, 4010 },
48  { 120, 4360 },
49  { 110, 4740 },
50  { 100, 5190 },
51  { 90, 5670 },
52  { 80, 6200 },
53  { 70, 6770 },
54  { 60, 7360 },
55  { 50, 7970 },
56  { 40, 8250 },
57  { 30, 9000 },
58  { 20, 9450 },
59  { 15, 9600 },
60 };
61 
62 /* DVB-S AGCIQ_VALUE vs. signal level in dBm/10.
63  * As measured, connected to a modulator.
64  * -8.0 to -50.0 dBm directly connected,
65  * -52.0 to -74.8 with extra attenuation.
66  * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm.
67  * Crude linear extrapolation below -84.8dBm and above -8.0dBm.
68  */
69 static const struct stb0899_tab stb0899_dvbsrf_tab[] = {
70  { -750, -128 },
71  { -748, -94 },
72  { -745, -92 },
73  { -735, -90 },
74  { -720, -87 },
75  { -670, -77 },
76  { -640, -70 },
77  { -610, -62 },
78  { -600, -60 },
79  { -590, -56 },
80  { -560, -41 },
81  { -540, -25 },
82  { -530, -17 },
83  { -520, -11 },
84  { -500, 1 },
85  { -490, 6 },
86  { -480, 10 },
87  { -440, 22 },
88  { -420, 27 },
89  { -400, 31 },
90  { -380, 34 },
91  { -340, 40 },
92  { -320, 43 },
93  { -280, 48 },
94  { -250, 52 },
95  { -230, 55 },
96  { -180, 61 },
97  { -140, 66 },
98  { -90, 73 },
99  { -80, 74 },
100  { 500, 127 }
101 };
102 
103 /* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10.
104  * As measured, connected to a modulator.
105  * -8.0 to -50.1 dBm directly connected,
106  * -53.0 to -76.6 with extra attenuation.
107  * Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm.
108  * Crude linear extrapolation below -76.6dBm and above -8.0dBm.
109  */
110 static const struct stb0899_tab stb0899_dvbs2rf_tab[] = {
111  { 700, 0 },
112  { -80, 3217 },
113  { -150, 3893 },
114  { -190, 4217 },
115  { -240, 4621 },
116  { -280, 4945 },
117  { -320, 5273 },
118  { -350, 5545 },
119  { -370, 5741 },
120  { -410, 6147 },
121  { -450, 6671 },
122  { -490, 7413 },
123  { -501, 7665 },
124  { -530, 8767 },
125  { -560, 10219 },
126  { -580, 10939 },
127  { -590, 11518 },
128  { -600, 11723 },
129  { -650, 12659 },
130  { -690, 13219 },
131  { -730, 13645 },
132  { -750, 13909 },
133  { -766, 14153 },
134  { -950, 16383 }
135 };
136 
137 /* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/
138 static struct stb0899_tab stb0899_quant_tab[] = {
139  { 0, 0 },
140  { 0, 100 },
141  { 600, 200 },
142  { 950, 299 },
143  { 1200, 398 },
144  { 1400, 501 },
145  { 1560, 603 },
146  { 1690, 700 },
147  { 1810, 804 },
148  { 1910, 902 },
149  { 2000, 1000 },
150  { 2080, 1096 },
151  { 2160, 1202 },
152  { 2230, 1303 },
153  { 2350, 1496 },
154  { 2410, 1603 },
155  { 2460, 1698 },
156  { 2510, 1799 },
157  { 2600, 1995 },
158  { 2650, 2113 },
159  { 2690, 2213 },
160  { 2720, 2291 },
161  { 2760, 2399 },
162  { 2800, 2512 },
163  { 2860, 2692 },
164  { 2930, 2917 },
165  { 2960, 3020 },
166  { 3010, 3199 },
167  { 3040, 3311 },
168  { 3060, 3388 },
169  { 3120, 3631 },
170  { 3190, 3936 },
171  { 3400, 5012 },
172  { 3610, 6383 },
173  { 3800, 7943 },
174  { 4210, 12735 },
175  { 4500, 17783 },
176  { 4690, 22131 },
177  { 4810, 25410 }
178 };
179 
180 /* DVB-S2 Es/N0 estimate in dB/100 vs read value */
181 static struct stb0899_tab stb0899_est_tab[] = {
182  { 0, 0 },
183  { 0, 1 },
184  { 301, 2 },
185  { 1204, 16 },
186  { 1806, 64 },
187  { 2408, 256 },
188  { 2709, 512 },
189  { 3010, 1023 },
190  { 3311, 2046 },
191  { 3612, 4093 },
192  { 3823, 6653 },
193  { 3913, 8185 },
194  { 4010, 10233 },
195  { 4107, 12794 },
196  { 4214, 16368 },
197  { 4266, 18450 },
198  { 4311, 20464 },
199  { 4353, 22542 },
200  { 4391, 24604 },
201  { 4425, 26607 },
202  { 4457, 28642 },
203  { 4487, 30690 },
204  { 4515, 32734 },
205  { 4612, 40926 },
206  { 4692, 49204 },
207  { 4816, 65464 },
208  { 4913, 81846 },
209  { 4993, 98401 },
210  { 5060, 114815 },
211  { 5118, 131220 },
212  { 5200, 158489 },
213  { 5300, 199526 },
214  { 5400, 251189 },
215  { 5500, 316228 },
216  { 5600, 398107 },
217  { 5720, 524807 },
218  { 5721, 526017 },
219 };
220 
221 static int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
222 {
223  int ret;
224 
225  u8 b0[] = { reg >> 8, reg & 0xff };
226  u8 buf;
227 
228  struct i2c_msg msg[] = {
229  {
230  .addr = state->config->demod_address,
231  .flags = 0,
232  .buf = b0,
233  .len = 2
234  },{
235  .addr = state->config->demod_address,
236  .flags = I2C_M_RD,
237  .buf = &buf,
238  .len = 1
239  }
240  };
241 
242  ret = i2c_transfer(state->i2c, msg, 2);
243  if (ret != 2) {
244  if (ret != -ERESTARTSYS)
245  dprintk(state->verbose, FE_ERROR, 1,
246  "Read error, Reg=[0x%02x], Status=%d",
247  reg, ret);
248 
249  return ret < 0 ? ret : -EREMOTEIO;
250  }
251  if (unlikely(*state->verbose >= FE_DEBUGREG))
252  dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x",
253  reg, buf);
254 
255  return (unsigned int)buf;
256 }
257 
258 int stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
259 {
260  int result;
261 
262  result = _stb0899_read_reg(state, reg);
263  /*
264  * Bug ID 9:
265  * access to 0xf2xx/0xf6xx
266  * must be followed by read from 0xf2ff/0xf6ff.
267  */
268  if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
269  (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
270  _stb0899_read_reg(state, (reg | 0x00ff));
271 
272  return result;
273 }
274 
275 u32 _stb0899_read_s2reg(struct stb0899_state *state,
276  u32 stb0899_i2cdev,
277  u32 stb0899_base_addr,
278  u16 stb0899_reg_offset)
279 {
280  int status;
281  u32 data;
282  u8 buf[7] = { 0 };
283  u16 tmpaddr;
284 
285  u8 buf_0[] = {
286  GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */
287  GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */
288  GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */
289  GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */
290  GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */
291  GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */
292  };
293  u8 buf_1[] = {
294  0x00, /* 0xf3 Reg Offset */
295  0x00, /* 0x44 Reg Offset */
296  };
297 
298  struct i2c_msg msg_0 = {
299  .addr = state->config->demod_address,
300  .flags = 0,
301  .buf = buf_0,
302  .len = 6
303  };
304 
305  struct i2c_msg msg_1 = {
306  .addr = state->config->demod_address,
307  .flags = 0,
308  .buf = buf_1,
309  .len = 2
310  };
311 
312  struct i2c_msg msg_r = {
313  .addr = state->config->demod_address,
314  .flags = I2C_M_RD,
315  .buf = buf,
316  .len = 4
317  };
318 
319  tmpaddr = stb0899_reg_offset & 0xff00;
320  if (!(stb0899_reg_offset & 0x8))
321  tmpaddr = stb0899_reg_offset | 0x20;
322 
323  buf_1[0] = GETBYTE(tmpaddr, BYTE1);
324  buf_1[1] = GETBYTE(tmpaddr, BYTE0);
325 
326  status = i2c_transfer(state->i2c, &msg_0, 1);
327  if (status < 1) {
328  if (status != -ERESTARTSYS)
329  printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
330  __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
331 
332  goto err;
333  }
334 
335  /* Dummy */
336  status = i2c_transfer(state->i2c, &msg_1, 1);
337  if (status < 1)
338  goto err;
339 
340  status = i2c_transfer(state->i2c, &msg_r, 1);
341  if (status < 1)
342  goto err;
343 
344  buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
345  buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
346 
347  /* Actual */
348  status = i2c_transfer(state->i2c, &msg_1, 1);
349  if (status < 1) {
350  if (status != -ERESTARTSYS)
351  printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
352  __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
353  goto err;
354  }
355 
356  status = i2c_transfer(state->i2c, &msg_r, 1);
357  if (status < 1) {
358  if (status != -ERESTARTSYS)
359  printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
360  __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
361  return status < 0 ? status : -EREMOTEIO;
362  }
363 
364  data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]);
365  if (unlikely(*state->verbose >= FE_DEBUGREG))
366  printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
367  __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data);
368 
369  return data;
370 
371 err:
372  return status < 0 ? status : -EREMOTEIO;
373 }
374 
375 int stb0899_write_s2reg(struct stb0899_state *state,
376  u32 stb0899_i2cdev,
377  u32 stb0899_base_addr,
378  u16 stb0899_reg_offset,
379  u32 stb0899_data)
380 {
381  int status;
382 
383  /* Base Address Setup */
384  u8 buf_0[] = {
385  GETBYTE(stb0899_i2cdev, BYTE1), /* 0xf3 S2 Base Address (MSB) */
386  GETBYTE(stb0899_i2cdev, BYTE0), /* 0xfc S2 Base Address (LSB) */
387  GETBYTE(stb0899_base_addr, BYTE0), /* 0x00 Base Address (LSB) */
388  GETBYTE(stb0899_base_addr, BYTE1), /* 0x04 Base Address (LSB) */
389  GETBYTE(stb0899_base_addr, BYTE2), /* 0x00 Base Address (MSB) */
390  GETBYTE(stb0899_base_addr, BYTE3), /* 0x00 Base Address (MSB) */
391  };
392  u8 buf_1[] = {
393  0x00, /* 0xf3 Reg Offset */
394  0x00, /* 0x44 Reg Offset */
395  0x00, /* data */
396  0x00, /* data */
397  0x00, /* data */
398  0x00, /* data */
399  };
400 
401  struct i2c_msg msg_0 = {
402  .addr = state->config->demod_address,
403  .flags = 0,
404  .buf = buf_0,
405  .len = 6
406  };
407 
408  struct i2c_msg msg_1 = {
409  .addr = state->config->demod_address,
410  .flags = 0,
411  .buf = buf_1,
412  .len = 6
413  };
414 
415  buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
416  buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
417  buf_1[2] = GETBYTE(stb0899_data, BYTE0);
418  buf_1[3] = GETBYTE(stb0899_data, BYTE1);
419  buf_1[4] = GETBYTE(stb0899_data, BYTE2);
420  buf_1[5] = GETBYTE(stb0899_data, BYTE3);
421 
422  if (unlikely(*state->verbose >= FE_DEBUGREG))
423  printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
424  __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data);
425 
426  status = i2c_transfer(state->i2c, &msg_0, 1);
427  if (unlikely(status < 1)) {
428  if (status != -ERESTARTSYS)
429  printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
430  __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
431  goto err;
432  }
433  status = i2c_transfer(state->i2c, &msg_1, 1);
434  if (unlikely(status < 1)) {
435  if (status != -ERESTARTSYS)
436  printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
437  __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
438 
439  return status < 0 ? status : -EREMOTEIO;
440  }
441 
442  return 0;
443 
444 err:
445  return status < 0 ? status : -EREMOTEIO;
446 }
447 
448 int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count)
449 {
450  int status;
451 
452  u8 b0[] = { reg >> 8, reg & 0xff };
453 
454  struct i2c_msg msg[] = {
455  {
456  .addr = state->config->demod_address,
457  .flags = 0,
458  .buf = b0,
459  .len = 2
460  },{
461  .addr = state->config->demod_address,
462  .flags = I2C_M_RD,
463  .buf = buf,
464  .len = count
465  }
466  };
467 
468  status = i2c_transfer(state->i2c, msg, 2);
469  if (status != 2) {
470  if (status != -ERESTARTSYS)
471  printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n",
472  __func__, reg, count, status);
473  goto err;
474  }
475  /*
476  * Bug ID 9:
477  * access to 0xf2xx/0xf6xx
478  * must be followed by read from 0xf2ff/0xf6ff.
479  */
480  if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
481  (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
482  _stb0899_read_reg(state, (reg | 0x00ff));
483 
484  if (unlikely(*state->verbose >= FE_DEBUGREG)) {
485  int i;
486 
487  printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg);
488  for (i = 0; i < count; i++) {
489  printk(" %02x", buf[i]);
490  }
491  printk("\n");
492  }
493 
494  return 0;
495 err:
496  return status < 0 ? status : -EREMOTEIO;
497 }
498 
499 int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count)
500 {
501  int ret;
502  u8 buf[2 + count];
503  struct i2c_msg i2c_msg = {
504  .addr = state->config->demod_address,
505  .flags = 0,
506  .buf = buf,
507  .len = 2 + count
508  };
509 
510  buf[0] = reg >> 8;
511  buf[1] = reg & 0xff;
512  memcpy(&buf[2], data, count);
513 
514  if (unlikely(*state->verbose >= FE_DEBUGREG)) {
515  int i;
516 
517  printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg);
518  for (i = 0; i < count; i++)
519  printk(" %02x", data[i]);
520  printk("\n");
521  }
522  ret = i2c_transfer(state->i2c, &i2c_msg, 1);
523 
524  /*
525  * Bug ID 9:
526  * access to 0xf2xx/0xf6xx
527  * must be followed by read from 0xf2ff/0xf6ff.
528  */
529  if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
530  stb0899_read_reg(state, (reg | 0x00ff));
531 
532  if (ret != 1) {
533  if (ret != -ERESTARTSYS)
534  dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d",
535  reg, data[0], count, ret);
536  return ret < 0 ? ret : -EREMOTEIO;
537  }
538 
539  return 0;
540 }
541 
542 int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data)
543 {
544  return stb0899_write_regs(state, reg, &data, 1);
545 }
546 
547 /*
548  * stb0899_get_mclk
549  * Get STB0899 master clock frequency
550  * ExtClk: external clock frequency (Hz)
551  */
552 static u32 stb0899_get_mclk(struct stb0899_state *state)
553 {
554  u32 mclk = 0, div = 0;
555 
556  div = stb0899_read_reg(state, STB0899_NCOARSE);
557  mclk = (div + 1) * state->config->xtal_freq / 6;
558  dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk);
559 
560  return mclk;
561 }
562 
563 /*
564  * stb0899_set_mclk
565  * Set STB0899 master Clock frequency
566  * Mclk: demodulator master clock
567  * ExtClk: external clock frequency (Hz)
568  */
569 static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk)
570 {
571  struct stb0899_internal *internal = &state->internal;
572  u8 mdiv = 0;
573 
574  dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config);
575  mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1;
576  dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv);
577 
578  stb0899_write_reg(state, STB0899_NCOARSE, mdiv);
579  internal->master_clk = stb0899_get_mclk(state);
580 
581  dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk);
582 }
583 
584 static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable)
585 {
586  struct stb0899_config *config = state->config;
587  const struct stb0899_postproc *postproc = config->postproc;
588 
589  /* post process event */
590  if (postproc) {
591  if (enable) {
592  if (postproc[ctl].level == STB0899_GPIOPULLUP)
593  stb0899_write_reg(state, postproc[ctl].gpio, 0x02);
594  else
595  stb0899_write_reg(state, postproc[ctl].gpio, 0x82);
596  } else {
597  if (postproc[ctl].level == STB0899_GPIOPULLUP)
598  stb0899_write_reg(state, postproc[ctl].gpio, 0x82);
599  else
600  stb0899_write_reg(state, postproc[ctl].gpio, 0x02);
601  }
602  }
603  return 0;
604 }
605 
606 static void stb0899_release(struct dvb_frontend *fe)
607 {
608  struct stb0899_state *state = fe->demodulator_priv;
609 
610  dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend");
611  /* post process event */
612  stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
613  kfree(state);
614 }
615 
616 /*
617  * stb0899_get_alpha
618  * return: rolloff
619  */
620 static int stb0899_get_alpha(struct stb0899_state *state)
621 {
622  u8 mode_coeff;
623 
624  mode_coeff = stb0899_read_reg(state, STB0899_DEMOD);
625 
626  if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1)
627  return 20;
628  else
629  return 35;
630 }
631 
632 /*
633  * stb0899_init_calc
634  */
635 static void stb0899_init_calc(struct stb0899_state *state)
636 {
637  struct stb0899_internal *internal = &state->internal;
638  int master_clk;
639  u8 agc[2];
640  u32 reg;
641 
642  /* Read registers (in burst mode) */
643  stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O */
644 
645  /* Initial calculations */
646  master_clk = stb0899_get_mclk(state);
647  internal->t_agc1 = 0;
648  internal->t_agc2 = 0;
649  internal->master_clk = master_clk;
650  internal->mclk = master_clk / 65536L;
651  internal->rolloff = stb0899_get_alpha(state);
652 
653  /* DVBS2 Initial calculations */
654  /* Set AGC value to the middle */
655  internal->agc_gain = 8154;
656  reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL);
657  STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain);
658  stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg);
659 
660  reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA);
661  internal->rrc_alpha = STB0899_GETFIELD(RRC_ALPHA, reg);
662 
663  internal->center_freq = 0;
664  internal->av_frame_coarse = 10;
665  internal->av_frame_fine = 20;
666  internal->step_size = 2;
667 /*
668  if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO))
669  pParams->IQLocked = 0;
670  else
671  pParams->IQLocked = 1;
672 */
673 }
674 
675 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout)
676 {
677  u8 reg = 0;
678  unsigned long start = jiffies;
679 
680  while (1) {
681  reg = stb0899_read_reg(state, STB0899_DISSTATUS);
682  if (!STB0899_GETFIELD(FIFOFULL, reg))
683  break;
684  if ((jiffies - start) > timeout) {
685  dprintk(state->verbose, FE_ERROR, 1, "timed out !!");
686  return -ETIMEDOUT;
687  }
688  }
689 
690  return 0;
691 }
692 
693 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)
694 {
695  struct stb0899_state *state = fe->demodulator_priv;
696  u8 reg, i;
697 
698  if (cmd->msg_len > 8)
699  return -EINVAL;
700 
701  /* enable FIFO precharge */
702  reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
703  STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1);
704  stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
705  for (i = 0; i < cmd->msg_len; i++) {
706  /* wait for FIFO empty */
707  if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0)
708  return -ETIMEDOUT;
709 
710  stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]);
711  }
712  reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
713  STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0);
714  stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
715  msleep(100);
716  return 0;
717 }
718 
719 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout)
720 {
721  u8 reg = 0;
722  unsigned long start = jiffies;
723 
724  while (!STB0899_GETFIELD(RXEND, reg)) {
725  reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
726  if (jiffies - start > timeout) {
727  dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
728  return -ETIMEDOUT;
729  }
730  msleep(10);
731  }
732 
733  return 0;
734 }
735 
736 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply)
737 {
738  struct stb0899_state *state = fe->demodulator_priv;
739  u8 reg, length = 0, i;
740  int result;
741 
742  if (stb0899_wait_diseqc_rxidle(state, 100) < 0)
743  return -ETIMEDOUT;
744 
745  reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
746  if (STB0899_GETFIELD(RXEND, reg)) {
747 
748  reg = stb0899_read_reg(state, STB0899_DISRX_ST1);
749  length = STB0899_GETFIELD(FIFOBYTENBR, reg);
750 
751  if (length > sizeof (reply->msg)) {
752  result = -EOVERFLOW;
753  goto exit;
754  }
755  reply->msg_len = length;
756 
757  /* extract data */
758  for (i = 0; i < length; i++)
759  reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO);
760  }
761 
762  return 0;
763 exit:
764 
765  return result;
766 }
767 
768 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout)
769 {
770  u8 reg = 0;
771  unsigned long start = jiffies;
772 
773  while (!STB0899_GETFIELD(TXIDLE, reg)) {
774  reg = stb0899_read_reg(state, STB0899_DISSTATUS);
775  if (jiffies - start > timeout) {
776  dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
777  return -ETIMEDOUT;
778  }
779  msleep(10);
780  }
781  return 0;
782 }
783 
784 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst)
785 {
786  struct stb0899_state *state = fe->demodulator_priv;
787  u8 reg, old_state;
788 
789  /* wait for diseqc idle */
790  if (stb0899_wait_diseqc_txidle(state, 100) < 0)
791  return -ETIMEDOUT;
792 
793  reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
794  old_state = reg;
795  /* set to burst mode */
796  STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03);
797  STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01);
798  stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
799  switch (burst) {
800  case SEC_MINI_A:
801  /* unmodulated */
802  stb0899_write_reg(state, STB0899_DISFIFO, 0x00);
803  break;
804  case SEC_MINI_B:
805  /* modulated */
806  stb0899_write_reg(state, STB0899_DISFIFO, 0xff);
807  break;
808  }
809  reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
810  STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00);
811  stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
812  /* wait for diseqc idle */
813  if (stb0899_wait_diseqc_txidle(state, 100) < 0)
814  return -ETIMEDOUT;
815 
816  /* restore state */
817  stb0899_write_reg(state, STB0899_DISCNTRL1, old_state);
818 
819  return 0;
820 }
821 
822 static int stb0899_diseqc_init(struct stb0899_state *state)
823 {
824 /*
825  struct dvb_diseqc_slave_reply rx_data;
826 */
827  u8 f22_tx, reg;
828 
829  u32 mclk, tx_freq = 22000;/* count = 0, i; */
830  reg = stb0899_read_reg(state, STB0899_DISCNTRL2);
831  STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0);
832  stb0899_write_reg(state, STB0899_DISCNTRL2, reg);
833 
834  /* disable Tx spy */
835  reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
836  STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1);
837  stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
838 
839  reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
840  STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0);
841  stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
842 
843  mclk = stb0899_get_mclk(state);
844  f22_tx = mclk / (tx_freq * 32);
845  stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq */
846  state->rx_freq = 20000;
847 
848  return 0;
849 }
850 
851 static int stb0899_sleep(struct dvb_frontend *fe)
852 {
853  struct stb0899_state *state = fe->demodulator_priv;
854 /*
855  u8 reg;
856 */
857  dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))");
858  /* post process event */
859  stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
860 
861  return 0;
862 }
863 
864 static int stb0899_wakeup(struct dvb_frontend *fe)
865 {
866  int rc;
867  struct stb0899_state *state = fe->demodulator_priv;
868 
869  if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI)))
870  return rc;
871  /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */
872  if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00)))
873  return rc;
874  if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00)))
875  return rc;
876 
877  /* post process event */
878  stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1);
879 
880  return 0;
881 }
882 
883 static int stb0899_init(struct dvb_frontend *fe)
884 {
885  int i;
886  struct stb0899_state *state = fe->demodulator_priv;
887  struct stb0899_config *config = state->config;
888 
889  dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... ");
890 
891  /* init device */
892  dprintk(state->verbose, FE_DEBUG, 1, "init device");
893  for (i = 0; config->init_dev[i].address != 0xffff; i++)
894  stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data);
895 
896  dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod");
897  /* init S2 demod */
898  for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++)
899  stb0899_write_s2reg(state, STB0899_S2DEMOD,
900  config->init_s2_demod[i].base_address,
901  config->init_s2_demod[i].offset,
902  config->init_s2_demod[i].data);
903 
904  dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod");
905  /* init S1 demod */
906  for (i = 0; config->init_s1_demod[i].address != 0xffff; i++)
907  stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data);
908 
909  dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC");
910  /* init S2 fec */
911  for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++)
912  stb0899_write_s2reg(state, STB0899_S2FEC,
913  config->init_s2_fec[i].base_address,
914  config->init_s2_fec[i].offset,
915  config->init_s2_fec[i].data);
916 
917  dprintk(state->verbose, FE_DEBUG, 1, "init TST");
918  /* init test */
919  for (i = 0; config->init_tst[i].address != 0xffff; i++)
920  stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data);
921 
922  stb0899_init_calc(state);
923  stb0899_diseqc_init(state);
924 
925  return 0;
926 }
927 
928 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val)
929 {
930  int res = 0;
931  int min = 0, med;
932 
933  if (val < tab[min].read)
934  res = tab[min].real;
935  else if (val >= tab[max].read)
936  res = tab[max].real;
937  else {
938  while ((max - min) > 1) {
939  med = (max + min) / 2;
940  if (val >= tab[min].read && val < tab[med].read)
941  max = med;
942  else
943  min = med;
944  }
945  res = ((val - tab[min].read) *
946  (tab[max].real - tab[min].real) /
947  (tab[max].read - tab[min].read)) +
948  tab[min].real;
949  }
950 
951  return res;
952 }
953 
954 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
955 {
956  struct stb0899_state *state = fe->demodulator_priv;
957  struct stb0899_internal *internal = &state->internal;
958 
959  int val;
960  u32 reg;
961  *strength = 0;
962  switch (state->delsys) {
963  case SYS_DVBS:
964  case SYS_DSS:
965  if (internal->lock) {
966  reg = stb0899_read_reg(state, STB0899_VSTATUS);
967  if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
968 
969  reg = stb0899_read_reg(state, STB0899_AGCIQIN);
970  val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg);
971 
972  *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val);
973  *strength += 750;
974  dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm",
975  val & 0xff, *strength);
976  }
977  }
978  break;
979  case SYS_DVBS2:
980  if (internal->lock) {
981  reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_GAIN);
982  val = STB0899_GETFIELD(IF_AGC_GAIN, reg);
983 
984  *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val);
985  *strength += 950;
986  dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm",
987  val & 0x3fff, *strength);
988  }
989  break;
990  default:
991  dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
992  return -EINVAL;
993  }
994 
995  return 0;
996 }
997 
998 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr)
999 {
1000  struct stb0899_state *state = fe->demodulator_priv;
1001  struct stb0899_internal *internal = &state->internal;
1002 
1003  unsigned int val, quant, quantn = -1, est, estn = -1;
1004  u8 buf[2];
1005  u32 reg;
1006 
1007  *snr = 0;
1008  reg = stb0899_read_reg(state, STB0899_VSTATUS);
1009  switch (state->delsys) {
1010  case SYS_DVBS:
1011  case SYS_DSS:
1012  if (internal->lock) {
1013  if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1014 
1015  stb0899_read_regs(state, STB0899_NIRM, buf, 2);
1016  val = MAKEWORD16(buf[0], buf[1]);
1017 
1018  *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val);
1019  dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n",
1020  buf[0], buf[1], val, *snr);
1021  }
1022  }
1023  break;
1024  case SYS_DVBS2:
1025  if (internal->lock) {
1026  reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1);
1027  quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg);
1028  reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2);
1029  est = STB0899_GETFIELD(ESN0_EST, reg);
1030  if (est == 1)
1031  val = 301; /* C/N = 30.1 dB */
1032  else if (est == 2)
1033  val = 270; /* C/N = 27.0 dB */
1034  else {
1035  /* quantn = 100 * log(quant^2) */
1036  quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100);
1037  /* estn = 100 * log(est) */
1038  estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est);
1039  /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */
1040  val = (quantn - estn) / 10;
1041  }
1042  *snr = val;
1043  dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm",
1044  quant, quantn, est, estn, val);
1045  }
1046  break;
1047  default:
1048  dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1049  return -EINVAL;
1050  }
1051 
1052  return 0;
1053 }
1054 
1055 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status)
1056 {
1057  struct stb0899_state *state = fe->demodulator_priv;
1058  struct stb0899_internal *internal = &state->internal;
1059  u8 reg;
1060  *status = 0;
1061 
1062  switch (state->delsys) {
1063  case SYS_DVBS:
1064  case SYS_DSS:
1065  dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS");
1066  if (internal->lock) {
1067  reg = stb0899_read_reg(state, STB0899_VSTATUS);
1068  if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1069  dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK");
1070  *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_LOCK;
1071 
1072  reg = stb0899_read_reg(state, STB0899_PLPARM);
1073  if (STB0899_GETFIELD(VITCURPUN, reg)) {
1074  dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC");
1075  *status |= FE_HAS_VITERBI | FE_HAS_SYNC;
1076  /* post process event */
1077  stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1078  }
1079  }
1080  }
1081  break;
1082  case SYS_DVBS2:
1083  dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2");
1084  if (internal->lock) {
1085  reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2);
1086  if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) {
1087  *status |= FE_HAS_CARRIER;
1088  dprintk(state->verbose, FE_DEBUG, 1,
1089  "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER");
1090 
1091  reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1);
1092  if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) {
1093  *status |= FE_HAS_LOCK;
1094  dprintk(state->verbose, FE_DEBUG, 1,
1095  "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK");
1096 
1097  }
1098  if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) {
1099  *status |= FE_HAS_VITERBI;
1100  dprintk(state->verbose, FE_DEBUG, 1,
1101  "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI");
1102  }
1103  if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) {
1104  *status |= FE_HAS_SYNC;
1105  dprintk(state->verbose, FE_DEBUG, 1,
1106  "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC");
1107  /* post process event */
1108  stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1109  }
1110  }
1111  }
1112  break;
1113  default:
1114  dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1115  return -EINVAL;
1116  }
1117  return 0;
1118 }
1119 
1120 /*
1121  * stb0899_get_error
1122  * viterbi error for DVB-S/DSS
1123  * packet error for DVB-S2
1124  * Bit Error Rate or Packet Error Rate * 10 ^ 7
1125  */
1126 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber)
1127 {
1128  struct stb0899_state *state = fe->demodulator_priv;
1129  struct stb0899_internal *internal = &state->internal;
1130 
1131  u8 lsb, msb;
1132 
1133  *ber = 0;
1134 
1135  switch (state->delsys) {
1136  case SYS_DVBS:
1137  case SYS_DSS:
1138  if (internal->lock) {
1139  lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1140  msb = stb0899_read_reg(state, STB0899_ECNT1M);
1141  *ber = MAKEWORD16(msb, lsb);
1142  /* Viterbi Check */
1143  if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) {
1144  /* Error Rate */
1145  *ber *= 9766;
1146  /* ber = ber * 10 ^ 7 */
1147  *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1148  *ber /= 8;
1149  }
1150  }
1151  break;
1152  case SYS_DVBS2:
1153  if (internal->lock) {
1154  lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1155  msb = stb0899_read_reg(state, STB0899_ECNT1M);
1156  *ber = MAKEWORD16(msb, lsb);
1157  /* ber = ber * 10 ^ 7 */
1158  *ber *= 10000000;
1159  *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1160  }
1161  break;
1162  default:
1163  dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1164  return -EINVAL;
1165  }
1166 
1167  return 0;
1168 }
1169 
1170 static int stb0899_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
1171 {
1172  struct stb0899_state *state = fe->demodulator_priv;
1173 
1174  switch (voltage) {
1175  case SEC_VOLTAGE_13:
1176  stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1177  stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1178  stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00);
1179  break;
1180  case SEC_VOLTAGE_18:
1181  stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02);
1182  stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1183  stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1184  break;
1185  case SEC_VOLTAGE_OFF:
1186  stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1187  stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82);
1188  stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1189  break;
1190  default:
1191  return -EINVAL;
1192  }
1193 
1194  return 0;
1195 }
1196 
1197 static int stb0899_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
1198 {
1199  struct stb0899_state *state = fe->demodulator_priv;
1200  struct stb0899_internal *internal = &state->internal;
1201 
1202  u8 div, reg;
1203 
1204  /* wait for diseqc idle */
1205  if (stb0899_wait_diseqc_txidle(state, 100) < 0)
1206  return -ETIMEDOUT;
1207 
1208  switch (tone) {
1209  case SEC_TONE_ON:
1210  div = (internal->master_clk / 100) / 5632;
1211  div = (div + 5) / 10;
1212  stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66);
1213  reg = stb0899_read_reg(state, STB0899_ACRPRESC);
1214  STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03);
1215  stb0899_write_reg(state, STB0899_ACRPRESC, reg);
1216  stb0899_write_reg(state, STB0899_ACRDIV1, div);
1217  break;
1218  case SEC_TONE_OFF:
1219  stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20);
1220  break;
1221  default:
1222  return -EINVAL;
1223  }
1224  return 0;
1225 }
1226 
1227 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
1228 {
1229  int i2c_stat;
1230  struct stb0899_state *state = fe->demodulator_priv;
1231 
1232  i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT);
1233  if (i2c_stat < 0)
1234  goto err;
1235 
1236  if (enable) {
1237  dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ...");
1238  i2c_stat |= STB0899_I2CTON;
1239  if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1240  goto err;
1241  } else {
1242  dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ...");
1243  i2c_stat &= ~STB0899_I2CTON;
1244  if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1245  goto err;
1246  }
1247  return 0;
1248 err:
1249  dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed");
1250  return -EREMOTEIO;
1251 }
1252 
1253 
1254 static inline void CONVERT32(u32 x, char *str)
1255 {
1256  *str++ = (x >> 24) & 0xff;
1257  *str++ = (x >> 16) & 0xff;
1258  *str++ = (x >> 8) & 0xff;
1259  *str++ = (x >> 0) & 0xff;
1260  *str = '\0';
1261 }
1262 
1263 int stb0899_get_dev_id(struct stb0899_state *state)
1264 {
1265  u8 chip_id, release;
1266  u16 id;
1267  u32 demod_ver = 0, fec_ver = 0;
1268  char demod_str[5] = { 0 };
1269  char fec_str[5] = { 0 };
1270 
1271  id = stb0899_read_reg(state, STB0899_DEV_ID);
1272  dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id);
1273  chip_id = STB0899_GETFIELD(CHIP_ID, id);
1274  release = STB0899_GETFIELD(CHIP_REL, id);
1275 
1276  dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]",
1277  chip_id, release);
1278 
1279  CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str);
1280 
1281  demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID);
1282  dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver);
1283  CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str);
1284  fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG);
1285  if (! (chip_id > 0)) {
1286  dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899");
1287 
1288  return -ENODEV;
1289  }
1290  dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver);
1291 
1292  return 0;
1293 }
1294 
1295 static void stb0899_set_delivery(struct stb0899_state *state)
1296 {
1297  u8 reg;
1298  u8 stop_clk[2];
1299 
1300  stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1);
1301  stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2);
1302 
1303  switch (state->delsys) {
1304  case SYS_DVBS:
1305  dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S");
1306  /* FECM/Viterbi ON */
1307  reg = stb0899_read_reg(state, STB0899_FECM);
1308  STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1309  STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1310  stb0899_write_reg(state, STB0899_FECM, reg);
1311 
1312  stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1313  stb0899_write_reg(state, STB0899_TSULC, 0x40);
1314  stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1315  stb0899_write_reg(state, STB0899_TSLPL, 0x12);
1316 
1317  reg = stb0899_read_reg(state, STB0899_TSTRES);
1318  STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1319  stb0899_write_reg(state, STB0899_TSTRES, reg);
1320 
1321  STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1322  STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1323  STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1324 
1325  STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1326  STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1327 
1328  STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1);
1329  STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1330 
1331  STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1332  break;
1333  case SYS_DVBS2:
1334  /* FECM/Viterbi OFF */
1335  reg = stb0899_read_reg(state, STB0899_FECM);
1336  STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1337  STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0);
1338  stb0899_write_reg(state, STB0899_FECM, reg);
1339 
1340  stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1341  stb0899_write_reg(state, STB0899_TSULC, 0x42);
1342  stb0899_write_reg(state, STB0899_RSLLC, 0x40);
1343  stb0899_write_reg(state, STB0899_TSLPL, 0x02);
1344 
1345  reg = stb0899_read_reg(state, STB0899_TSTRES);
1346  STB0899_SETFIELD_VAL(FRESLDPC, reg, 0);
1347  stb0899_write_reg(state, STB0899_TSTRES, reg);
1348 
1349  STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1350  STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0);
1351  STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0);
1352 
1353  STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0);
1354  STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0);
1355 
1356  STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0);
1357  STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1358 
1359  STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0);
1360  break;
1361  case SYS_DSS:
1362  /* FECM/Viterbi ON */
1363  reg = stb0899_read_reg(state, STB0899_FECM);
1364  STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1);
1365  STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1366  stb0899_write_reg(state, STB0899_FECM, reg);
1367 
1368  stb0899_write_reg(state, STB0899_RSULC, 0xa1);
1369  stb0899_write_reg(state, STB0899_TSULC, 0x61);
1370  stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1371 
1372  reg = stb0899_read_reg(state, STB0899_TSTRES);
1373  STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1374  stb0899_write_reg(state, STB0899_TSTRES, reg);
1375 
1376  STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1377  STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1378  STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1379 
1380  STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1381  STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1382 
1383  STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1384 
1385  STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1386  break;
1387  default:
1388  dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1389  break;
1390  }
1391  STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0);
1392  stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2);
1393 }
1394 
1395 /*
1396  * stb0899_set_iterations
1397  * set the LDPC iteration scale function
1398  */
1399 static void stb0899_set_iterations(struct stb0899_state *state)
1400 {
1401  struct stb0899_internal *internal = &state->internal;
1402  struct stb0899_config *config = state->config;
1403 
1404  s32 iter_scale;
1405  u32 reg;
1406 
1407  iter_scale = 17 * (internal->master_clk / 1000);
1408  iter_scale += 410000;
1409  iter_scale /= (internal->srate / 1000000);
1410  iter_scale /= 1000;
1411 
1412  if (iter_scale > config->ldpc_max_iter)
1413  iter_scale = config->ldpc_max_iter;
1414 
1415  reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER);
1416  STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);
1417  stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
1418 }
1419 
1420 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe)
1421 {
1422  struct stb0899_state *state = fe->demodulator_priv;
1423  struct stb0899_params *i_params = &state->params;
1424  struct stb0899_internal *internal = &state->internal;
1425  struct stb0899_config *config = state->config;
1426  struct dtv_frontend_properties *props = &fe->dtv_property_cache;
1427 
1428  u32 SearchRange, gain;
1429 
1430  i_params->freq = props->frequency;
1431  i_params->srate = props->symbol_rate;
1432  state->delsys = props->delivery_system;
1433  dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys);
1434 
1435  SearchRange = 10000000;
1436  dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate);
1437  /* checking Search Range is meaningless for a fixed 3 Mhz */
1438  if (INRANGE(i_params->srate, 1000000, 45000000)) {
1439  dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE");
1440  stb0899_set_delivery(state);
1441 
1442  if (state->config->tuner_set_rfsiggain) {
1443  if (internal->srate > 15000000)
1444  gain = 8; /* 15Mb < srate < 45Mb, gain = 8dB */
1445  else if (internal->srate > 5000000)
1446  gain = 12; /* 5Mb < srate < 15Mb, gain = 12dB */
1447  else
1448  gain = 14; /* 1Mb < srate < 5Mb, gain = 14db */
1449  state->config->tuner_set_rfsiggain(fe, gain);
1450  }
1451 
1452  if (i_params->srate <= 5000000)
1453  stb0899_set_mclk(state, config->lo_clk);
1454  else
1455  stb0899_set_mclk(state, config->hi_clk);
1456 
1457  switch (state->delsys) {
1458  case SYS_DVBS:
1459  case SYS_DSS:
1460  dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system");
1461  internal->freq = i_params->freq;
1462  internal->srate = i_params->srate;
1463  /*
1464  * search = user search range +
1465  * 500Khz +
1466  * 2 * Tuner_step_size +
1467  * 10% of the symbol rate
1468  */
1469  internal->srch_range = SearchRange + 1500000 + (i_params->srate / 5);
1470  internal->derot_percent = 30;
1471 
1472  /* What to do for tuners having no bandwidth setup ? */
1473  /* enable tuner I/O */
1474  stb0899_i2c_gate_ctrl(&state->frontend, 1);
1475 
1476  if (state->config->tuner_set_bandwidth)
1477  state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10);
1478  if (state->config->tuner_get_bandwidth)
1479  state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1480 
1481  /* disable tuner I/O */
1482  stb0899_i2c_gate_ctrl(&state->frontend, 0);
1483 
1484  /* Set DVB-S1 AGC */
1485  stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11);
1486 
1487  /* Run the search algorithm */
1488  dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo ..");
1489  if (stb0899_dvbs_algo(state) == RANGEOK) {
1490  internal->lock = 1;
1491  dprintk(state->verbose, FE_DEBUG, 1,
1492  "-------------------------------------> DVB-S LOCK !");
1493 
1494 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors */
1495 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1496 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1497 // dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status);
1498 // dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl);
1499 
1500  return DVBFE_ALGO_SEARCH_SUCCESS;
1501  } else {
1502  internal->lock = 0;
1503 
1504  return DVBFE_ALGO_SEARCH_FAILED;
1505  }
1506  break;
1507  case SYS_DVBS2:
1508  internal->freq = i_params->freq;
1509  internal->srate = i_params->srate;
1510  internal->srch_range = SearchRange;
1511 
1512  /* enable tuner I/O */
1513  stb0899_i2c_gate_ctrl(&state->frontend, 1);
1514 
1515  if (state->config->tuner_set_bandwidth)
1516  state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange));
1517  if (state->config->tuner_get_bandwidth)
1518  state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1519 
1520  /* disable tuner I/O */
1521  stb0899_i2c_gate_ctrl(&state->frontend, 0);
1522 
1523 // pParams->SpectralInv = pSearch->IQ_Inversion;
1524 
1525  /* Set DVB-S2 AGC */
1526  stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c);
1527 
1528  /* Set IterScale =f(MCLK,SYMB) */
1529  stb0899_set_iterations(state);
1530 
1531  /* Run the search algorithm */
1532  dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo ..");
1533  if (stb0899_dvbs2_algo(state) == DVBS2_FEC_LOCK) {
1534  internal->lock = 1;
1535  dprintk(state->verbose, FE_DEBUG, 1,
1536  "-------------------------------------> DVB-S2 LOCK !");
1537 
1538 // stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors */
1539 // internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1540 // internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1541 
1542  return DVBFE_ALGO_SEARCH_SUCCESS;
1543  } else {
1544  internal->lock = 0;
1545 
1546  return DVBFE_ALGO_SEARCH_FAILED;
1547  }
1548  break;
1549  default:
1550  dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1551  return DVBFE_ALGO_SEARCH_INVALID;
1552  }
1553  }
1554 
1555  return DVBFE_ALGO_SEARCH_ERROR;
1556 }
1557 
1558 static int stb0899_get_frontend(struct dvb_frontend *fe)
1559 {
1560  struct dtv_frontend_properties *p = &fe->dtv_property_cache;
1561  struct stb0899_state *state = fe->demodulator_priv;
1562  struct stb0899_internal *internal = &state->internal;
1563 
1564  dprintk(state->verbose, FE_DEBUG, 1, "Get params");
1565  p->symbol_rate = internal->srate;
1566  p->frequency = internal->freq;
1567 
1568  return 0;
1569 }
1570 
1571 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe)
1572 {
1573  return DVBFE_ALGO_CUSTOM;
1574 }
1575 
1576 static struct dvb_frontend_ops stb0899_ops = {
1577  .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS },
1578  .info = {
1579  .name = "STB0899 Multistandard",
1580  .frequency_min = 950000,
1581  .frequency_max = 2150000,
1582  .frequency_stepsize = 0,
1583  .frequency_tolerance = 0,
1584  .symbol_rate_min = 5000000,
1585  .symbol_rate_max = 45000000,
1586 
1587  .caps = FE_CAN_INVERSION_AUTO |
1588  FE_CAN_FEC_AUTO |
1589  FE_CAN_2G_MODULATION |
1590  FE_CAN_QPSK
1591  },
1592 
1593  .release = stb0899_release,
1594  .init = stb0899_init,
1595  .sleep = stb0899_sleep,
1596 // .wakeup = stb0899_wakeup,
1597 
1598  .i2c_gate_ctrl = stb0899_i2c_gate_ctrl,
1599 
1600  .get_frontend_algo = stb0899_frontend_algo,
1601  .search = stb0899_search,
1602  .get_frontend = stb0899_get_frontend,
1603 
1604 
1605  .read_status = stb0899_read_status,
1606  .read_snr = stb0899_read_snr,
1607  .read_signal_strength = stb0899_read_signal_strength,
1608  .read_ber = stb0899_read_ber,
1609 
1610  .set_voltage = stb0899_set_voltage,
1611  .set_tone = stb0899_set_tone,
1612 
1613  .diseqc_send_master_cmd = stb0899_send_diseqc_msg,
1614  .diseqc_recv_slave_reply = stb0899_recv_slave_reply,
1615  .diseqc_send_burst = stb0899_send_diseqc_burst,
1616 };
1617 
1618 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c)
1619 {
1620  struct stb0899_state *state = NULL;
1621  enum stb0899_inversion inversion;
1622 
1623  state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL);
1624  if (state == NULL)
1625  goto error;
1626 
1627  inversion = config->inversion;
1628  state->verbose = &verbose;
1629  state->config = config;
1630  state->i2c = i2c;
1631  state->frontend.ops = stb0899_ops;
1632  state->frontend.demodulator_priv = state;
1633  state->internal.inversion = inversion;
1634 
1635  stb0899_wakeup(&state->frontend);
1636  if (stb0899_get_dev_id(state) == -ENODEV) {
1637  printk("%s: Exiting .. !\n", __func__);
1638  goto error;
1639  }
1640 
1641  printk("%s: Attaching STB0899 \n", __func__);
1642  return &state->frontend;
1643 
1644 error:
1645  kfree(state);
1646  return NULL;
1647 }
1648 EXPORT_SYMBOL(stb0899_attach);
1649 MODULE_PARM_DESC(verbose, "Set Verbosity level");
1650 MODULE_AUTHOR("Manu Abraham");
1651 MODULE_DESCRIPTION("STB0899 Multi-Std frontend");
1652 MODULE_LICENSE("GPL");
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