Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
[linux-2.6.git] / drivers / media / dvb / frontends / stb0899_drv.c
1 /*
2         STB0899 Multistandard Frontend driver
3         Copyright (C) Manu Abraham (abraham.manu@gmail.com)
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         { -950, -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         { -999, 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         u8 agc1cn;
641         u32 reg;
642
643         /* Read registers (in burst mode)       */
644         agc1cn = stb0899_read_reg(state, STB0899_AGC1CN);
645         stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O   */
646
647         /* Initial calculations */
648         master_clk                      = stb0899_get_mclk(state);
649         internal->t_agc1                = 0;
650         internal->t_agc2                = 0;
651         internal->master_clk            = master_clk;
652         internal->mclk                  = master_clk / 65536L;
653         internal->rolloff               = stb0899_get_alpha(state);
654
655         /* DVBS2 Initial calculations   */
656         /* Set AGC value to the middle  */
657         internal->agc_gain              = 8154;
658         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL);
659         STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain);
660         stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg);
661
662         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA);
663         internal->rrc_alpha             = STB0899_GETFIELD(RRC_ALPHA, reg);
664
665         internal->center_freq           = 0;
666         internal->av_frame_coarse       = 10;
667         internal->av_frame_fine         = 20;
668         internal->step_size             = 2;
669 /*
670         if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO))
671                 pParams->IQLocked = 0;
672         else
673                 pParams->IQLocked = 1;
674 */
675 }
676
677 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout)
678 {
679         u8 reg = 0;
680         unsigned long start = jiffies;
681
682         while (1) {
683                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
684                 if (!STB0899_GETFIELD(FIFOFULL, reg))
685                         break;
686                 if ((jiffies - start) > timeout) {
687                         dprintk(state->verbose, FE_ERROR, 1, "timed out !!");
688                         return -ETIMEDOUT;
689                 }
690         }
691
692         return 0;
693 }
694
695 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)
696 {
697         struct stb0899_state *state = fe->demodulator_priv;
698         u8 reg, i;
699
700         if (cmd->msg_len > 8)
701                 return -EINVAL;
702
703         /* enable FIFO precharge        */
704         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
705         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1);
706         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
707         for (i = 0; i < cmd->msg_len; i++) {
708                 /* wait for FIFO empty  */
709                 if (stb0899_wait_diseqc_fifo_empty(state, 100) < 0)
710                         return -ETIMEDOUT;
711
712                 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]);
713         }
714         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
715         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0);
716         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
717         msleep(100);
718         return 0;
719 }
720
721 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout)
722 {
723         u8 reg = 0;
724         unsigned long start = jiffies;
725
726         while (!STB0899_GETFIELD(RXEND, reg)) {
727                 reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
728                 if (jiffies - start > timeout) {
729                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
730                         return -ETIMEDOUT;
731                 }
732                 msleep(10);
733         }
734
735         return 0;
736 }
737
738 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply)
739 {
740         struct stb0899_state *state = fe->demodulator_priv;
741         u8 reg, length = 0, i;
742         int result;
743
744         if (stb0899_wait_diseqc_rxidle(state, 100) < 0)
745                 return -ETIMEDOUT;
746
747         reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
748         if (STB0899_GETFIELD(RXEND, reg)) {
749
750                 reg = stb0899_read_reg(state, STB0899_DISRX_ST1);
751                 length = STB0899_GETFIELD(FIFOBYTENBR, reg);
752
753                 if (length > sizeof (reply->msg)) {
754                         result = -EOVERFLOW;
755                         goto exit;
756                 }
757                 reply->msg_len = length;
758
759                 /* extract data */
760                 for (i = 0; i < length; i++)
761                         reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO);
762         }
763
764         return 0;
765 exit:
766
767         return result;
768 }
769
770 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout)
771 {
772         u8 reg = 0;
773         unsigned long start = jiffies;
774
775         while (!STB0899_GETFIELD(TXIDLE, reg)) {
776                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
777                 if (jiffies - start > timeout) {
778                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
779                         return -ETIMEDOUT;
780                 }
781                 msleep(10);
782         }
783         return 0;
784 }
785
786 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst)
787 {
788         struct stb0899_state *state = fe->demodulator_priv;
789         u8 reg, old_state;
790
791         /* wait for diseqc idle */
792         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
793                 return -ETIMEDOUT;
794
795         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
796         old_state = reg;
797         /* set to burst mode    */
798         STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03);
799         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01);
800         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
801         switch (burst) {
802         case SEC_MINI_A:
803                 /* unmodulated  */
804                 stb0899_write_reg(state, STB0899_DISFIFO, 0x00);
805                 break;
806         case SEC_MINI_B:
807                 /* modulated    */
808                 stb0899_write_reg(state, STB0899_DISFIFO, 0xff);
809                 break;
810         }
811         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
812         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00);
813         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
814         /* wait for diseqc idle */
815         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
816                 return -ETIMEDOUT;
817
818         /* restore state        */
819         stb0899_write_reg(state, STB0899_DISCNTRL1, old_state);
820
821         return 0;
822 }
823
824 static int stb0899_diseqc_init(struct stb0899_state *state)
825 {
826         struct dvb_diseqc_master_cmd tx_data;
827 /*
828         struct dvb_diseqc_slave_reply rx_data;
829 */
830         u8 f22_tx, f22_rx, reg;
831
832         u32 mclk, tx_freq = 22000;/* count = 0, i; */
833         tx_data.msg[0] = 0xe2;
834         tx_data.msg_len = 3;
835         reg = stb0899_read_reg(state, STB0899_DISCNTRL2);
836         STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0);
837         stb0899_write_reg(state, STB0899_DISCNTRL2, reg);
838
839         /* disable Tx spy       */
840         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
841         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1);
842         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
843
844         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
845         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0);
846         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
847
848         mclk = stb0899_get_mclk(state);
849         f22_tx = mclk / (tx_freq * 32);
850         stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq     */
851         state->rx_freq = 20000;
852         f22_rx = mclk / (state->rx_freq * 32);
853
854         return 0;
855 }
856
857 static int stb0899_sleep(struct dvb_frontend *fe)
858 {
859         struct stb0899_state *state = fe->demodulator_priv;
860 /*
861         u8 reg;
862 */
863         dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))");
864         /* post process event */
865         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
866
867         return 0;
868 }
869
870 static int stb0899_wakeup(struct dvb_frontend *fe)
871 {
872         int rc;
873         struct stb0899_state *state = fe->demodulator_priv;
874
875         if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI)))
876                 return rc;
877         /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */
878         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00)))
879                 return rc;
880         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00)))
881                 return rc;
882
883         /* post process event */
884         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1);
885
886         return 0;
887 }
888
889 static int stb0899_init(struct dvb_frontend *fe)
890 {
891         int i;
892         struct stb0899_state *state = fe->demodulator_priv;
893         struct stb0899_config *config = state->config;
894
895         dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... ");
896
897         /* init device          */
898         dprintk(state->verbose, FE_DEBUG, 1, "init device");
899         for (i = 0; config->init_dev[i].address != 0xffff; i++)
900                 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data);
901
902         dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod");
903         /* init S2 demod        */
904         for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++)
905                 stb0899_write_s2reg(state, STB0899_S2DEMOD,
906                                     config->init_s2_demod[i].base_address,
907                                     config->init_s2_demod[i].offset,
908                                     config->init_s2_demod[i].data);
909
910         dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod");
911         /* init S1 demod        */
912         for (i = 0; config->init_s1_demod[i].address != 0xffff; i++)
913                 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data);
914
915         dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC");
916         /* init S2 fec          */
917         for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++)
918                 stb0899_write_s2reg(state, STB0899_S2FEC,
919                                     config->init_s2_fec[i].base_address,
920                                     config->init_s2_fec[i].offset,
921                                     config->init_s2_fec[i].data);
922
923         dprintk(state->verbose, FE_DEBUG, 1, "init TST");
924         /* init test            */
925         for (i = 0; config->init_tst[i].address != 0xffff; i++)
926                 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data);
927
928         stb0899_init_calc(state);
929         stb0899_diseqc_init(state);
930
931         return 0;
932 }
933
934 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val)
935 {
936         int res = 0;
937         int min = 0, med;
938
939         if (val < tab[min].read)
940                 res = tab[min].real;
941         else if (val >= tab[max].read)
942                 res = tab[max].real;
943         else {
944                 while ((max - min) > 1) {
945                         med = (max + min) / 2;
946                         if (val >= tab[min].read && val < tab[med].read)
947                                 max = med;
948                         else
949                                 min = med;
950                 }
951                 res = ((val - tab[min].read) *
952                        (tab[max].real - tab[min].real) /
953                        (tab[max].read - tab[min].read)) +
954                         tab[min].real;
955         }
956
957         return res;
958 }
959
960 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
961 {
962         struct stb0899_state *state             = fe->demodulator_priv;
963         struct stb0899_internal *internal       = &state->internal;
964
965         int val;
966         u32 reg;
967         switch (state->delsys) {
968         case SYS_DVBS:
969         case SYS_DSS:
970                 if (internal->lock) {
971                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
972                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
973
974                                 reg = stb0899_read_reg(state, STB0899_AGCIQIN);
975                                 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg);
976
977                                 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val);
978                                 *strength += 750;
979                                 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm",
980                                         val & 0xff, *strength);
981                         }
982                 }
983                 break;
984         case SYS_DVBS2:
985                 if (internal->lock) {
986                         reg = STB0899_READ_S2REG(STB0899_DEMOD, IF_AGC_GAIN);
987                         val = STB0899_GETFIELD(IF_AGC_GAIN, reg);
988
989                         *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val);
990                         *strength += 750;
991                         dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm",
992                                 val & 0x3fff, *strength);
993                 }
994                 break;
995         default:
996                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
997                 return -EINVAL;
998         }
999
1000         return 0;
1001 }
1002
1003 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr)
1004 {
1005         struct stb0899_state *state             = fe->demodulator_priv;
1006         struct stb0899_internal *internal       = &state->internal;
1007
1008         unsigned int val, quant, quantn = -1, est, estn = -1;
1009         u8 buf[2];
1010         u32 reg;
1011
1012         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1013         switch (state->delsys) {
1014         case SYS_DVBS:
1015         case SYS_DSS:
1016                 if (internal->lock) {
1017                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1018
1019                                 stb0899_read_regs(state, STB0899_NIRM, buf, 2);
1020                                 val = MAKEWORD16(buf[0], buf[1]);
1021
1022                                 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val);
1023                                 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n",
1024                                         buf[0], buf[1], val, *snr);
1025                         }
1026                 }
1027                 break;
1028         case SYS_DVBS2:
1029                 if (internal->lock) {
1030                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1);
1031                         quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg);
1032                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2);
1033                         est = STB0899_GETFIELD(ESN0_EST, reg);
1034                         if (est == 1)
1035                                 val = 301; /* C/N = 30.1 dB */
1036                         else if (est == 2)
1037                                 val = 270; /* C/N = 27.0 dB */
1038                         else {
1039                                 /* quantn = 100 * log(quant^2) */
1040                                 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100);
1041                                 /* estn = 100 * log(est) */
1042                                 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est);
1043                                 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */
1044                                 val = (quantn - estn) / 10;
1045                         }
1046                         *snr = val;
1047                         dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm",
1048                                 quant, quantn, est, estn, val);
1049                 }
1050                 break;
1051         default:
1052                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1053                 return -EINVAL;
1054         }
1055
1056         return 0;
1057 }
1058
1059 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status)
1060 {
1061         struct stb0899_state *state             = fe->demodulator_priv;
1062         struct stb0899_internal *internal       = &state->internal;
1063         u8 reg;
1064         *status = 0;
1065
1066         switch (state->delsys) {
1067         case SYS_DVBS:
1068         case SYS_DSS:
1069                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS");
1070                 if (internal->lock) {
1071                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1072                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1073                                 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK");
1074                                 *status |= FE_HAS_CARRIER | FE_HAS_LOCK;
1075
1076                                 reg = stb0899_read_reg(state, STB0899_PLPARM);
1077                                 if (STB0899_GETFIELD(VITCURPUN, reg)) {
1078                                         dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC");
1079                                         *status |= FE_HAS_VITERBI | FE_HAS_SYNC;
1080                                         /* post process event */
1081                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1082                                 }
1083                         }
1084                 }
1085                 break;
1086         case SYS_DVBS2:
1087                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2");
1088                 if (internal->lock) {
1089                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2);
1090                         if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) {
1091                                 *status |= FE_HAS_CARRIER;
1092                                 dprintk(state->verbose, FE_DEBUG, 1,
1093                                         "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER");
1094
1095                                 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1);
1096                                 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) {
1097                                         *status |= FE_HAS_LOCK;
1098                                         dprintk(state->verbose, FE_DEBUG, 1,
1099                                                 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK");
1100
1101                                 }
1102                                 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) {
1103                                         *status |= FE_HAS_VITERBI;
1104                                         dprintk(state->verbose, FE_DEBUG, 1,
1105                                                 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI");
1106                                 }
1107                                 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) {
1108                                         *status |= FE_HAS_SYNC;
1109                                         dprintk(state->verbose, FE_DEBUG, 1,
1110                                                 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC");
1111                                         /* post process event */
1112                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1113                                 }
1114                         }
1115                 }
1116                 break;
1117         default:
1118                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1119                 return -EINVAL;
1120         }
1121         return 0;
1122 }
1123
1124 /*
1125  * stb0899_get_error
1126  * viterbi error for DVB-S/DSS
1127  * packet error for DVB-S2
1128  * Bit Error Rate or Packet Error Rate * 10 ^ 7
1129  */
1130 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber)
1131 {
1132         struct stb0899_state *state             = fe->demodulator_priv;
1133         struct stb0899_internal *internal       = &state->internal;
1134
1135         u8  lsb, msb;
1136         u32 i;
1137
1138         *ber = 0;
1139
1140         switch (state->delsys) {
1141         case SYS_DVBS:
1142         case SYS_DSS:
1143                 if (internal->lock) {
1144                         /* average 5 BER values */
1145                         for (i = 0; i < 5; i++) {
1146                                 msleep(100);
1147                                 lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1148                                 msb = stb0899_read_reg(state, STB0899_ECNT1M);
1149                                 *ber += MAKEWORD16(msb, lsb);
1150                         }
1151                         *ber /= 5;
1152                         /* Viterbi Check        */
1153                         if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) {
1154                                 /* Error Rate           */
1155                                 *ber *= 9766;
1156                                 /* ber = ber * 10 ^ 7   */
1157                                 *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1158                                 *ber /= 8;
1159                         }
1160                 }
1161                 break;
1162         case SYS_DVBS2:
1163                 if (internal->lock) {
1164                         /* Average 5 PER values */
1165                         for (i = 0; i < 5; i++) {
1166                                 msleep(100);
1167                                 lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1168                                 msb = stb0899_read_reg(state, STB0899_ECNT1M);
1169                                 *ber += MAKEWORD16(msb, lsb);
1170                         }
1171                         /* ber = ber * 10 ^ 7   */
1172                         *ber *= 10000000;
1173                         *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1174                 }
1175                 break;
1176         default:
1177                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1178                 return -EINVAL;
1179         }
1180
1181         return 0;
1182 }
1183
1184 static int stb0899_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
1185 {
1186         struct stb0899_state *state = fe->demodulator_priv;
1187
1188         switch (voltage) {
1189         case SEC_VOLTAGE_13:
1190                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1191                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1192                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00);
1193                 break;
1194         case SEC_VOLTAGE_18:
1195                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02);
1196                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1197                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1198                 break;
1199         case SEC_VOLTAGE_OFF:
1200                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1201                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82);
1202                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1203                 break;
1204         default:
1205                 return -EINVAL;
1206         }
1207
1208         return 0;
1209 }
1210
1211 static int stb0899_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
1212 {
1213         struct stb0899_state *state = fe->demodulator_priv;
1214         struct stb0899_internal *internal = &state->internal;
1215
1216         u8 div, reg;
1217
1218         /* wait for diseqc idle */
1219         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
1220                 return -ETIMEDOUT;
1221
1222         switch (tone) {
1223         case SEC_TONE_ON:
1224                 div = (internal->master_clk / 100) / 5632;
1225                 div = (div + 5) / 10;
1226                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66);
1227                 reg = stb0899_read_reg(state, STB0899_ACRPRESC);
1228                 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03);
1229                 stb0899_write_reg(state, STB0899_ACRPRESC, reg);
1230                 stb0899_write_reg(state, STB0899_ACRDIV1, div);
1231                 break;
1232         case SEC_TONE_OFF:
1233                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20);
1234                 break;
1235         default:
1236                 return -EINVAL;
1237         }
1238         return 0;
1239 }
1240
1241 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
1242 {
1243         int i2c_stat;
1244         struct stb0899_state *state = fe->demodulator_priv;
1245
1246         i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT);
1247         if (i2c_stat < 0)
1248                 goto err;
1249
1250         if (enable) {
1251                 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ...");
1252                 i2c_stat |=  STB0899_I2CTON;
1253                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1254                         goto err;
1255         } else {
1256                 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ...");
1257                 i2c_stat &= ~STB0899_I2CTON;
1258                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1259                         goto err;
1260         }
1261         return 0;
1262 err:
1263         dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed");
1264         return -EREMOTEIO;
1265 }
1266
1267
1268 static inline void CONVERT32(u32 x, char *str)
1269 {
1270         *str++  = (x >> 24) & 0xff;
1271         *str++  = (x >> 16) & 0xff;
1272         *str++  = (x >>  8) & 0xff;
1273         *str++  = (x >>  0) & 0xff;
1274         *str    = '\0';
1275 }
1276
1277 int stb0899_get_dev_id(struct stb0899_state *state)
1278 {
1279         u8 chip_id, release;
1280         u16 id;
1281         u32 demod_ver = 0, fec_ver = 0;
1282         char demod_str[5] = { 0 };
1283         char fec_str[5] = { 0 };
1284
1285         id = stb0899_read_reg(state, STB0899_DEV_ID);
1286         dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id);
1287         chip_id = STB0899_GETFIELD(CHIP_ID, id);
1288         release = STB0899_GETFIELD(CHIP_REL, id);
1289
1290         dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]",
1291                 chip_id, release);
1292
1293         CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str);
1294
1295         demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID);
1296         dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver);
1297         CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str);
1298         fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG);
1299         if (! (chip_id > 0)) {
1300                 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899");
1301
1302                 return -ENODEV;
1303         }
1304         dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver);
1305
1306         return 0;
1307 }
1308
1309 static void stb0899_set_delivery(struct stb0899_state *state)
1310 {
1311         u8 reg;
1312         u8 stop_clk[2];
1313
1314         stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1);
1315         stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2);
1316
1317         switch (state->delsys) {
1318         case SYS_DVBS:
1319                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S");
1320                 /* FECM/Viterbi ON      */
1321                 reg = stb0899_read_reg(state, STB0899_FECM);
1322                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1323                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1324                 stb0899_write_reg(state, STB0899_FECM, reg);
1325
1326                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1327                 stb0899_write_reg(state, STB0899_TSULC, 0x40);
1328                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1329                 stb0899_write_reg(state, STB0899_TSLPL, 0x12);
1330
1331                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1332                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1333                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1334
1335                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1336                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1337                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1338
1339                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1340                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1341
1342                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1);
1343                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1344
1345                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1346                 break;
1347         case SYS_DVBS2:
1348                 /* FECM/Viterbi OFF     */
1349                 reg = stb0899_read_reg(state, STB0899_FECM);
1350                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1351                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0);
1352                 stb0899_write_reg(state, STB0899_FECM, reg);
1353
1354                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1355                 stb0899_write_reg(state, STB0899_TSULC, 0x42);
1356                 stb0899_write_reg(state, STB0899_RSLLC, 0x40);
1357                 stb0899_write_reg(state, STB0899_TSLPL, 0x02);
1358
1359                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1360                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0);
1361                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1362
1363                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1364                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0);
1365                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0);
1366
1367                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0);
1368                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0);
1369
1370                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0);
1371                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1372
1373                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0);
1374                 break;
1375         case SYS_DSS:
1376                 /* FECM/Viterbi ON      */
1377                 reg = stb0899_read_reg(state, STB0899_FECM);
1378                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1);
1379                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1380                 stb0899_write_reg(state, STB0899_FECM, reg);
1381
1382                 stb0899_write_reg(state, STB0899_RSULC, 0xa1);
1383                 stb0899_write_reg(state, STB0899_TSULC, 0x61);
1384                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1385
1386                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1387                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1388                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1389
1390                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1391                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1392                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1393
1394                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1395                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1396
1397                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1398
1399                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1400                 break;
1401         default:
1402                 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1403                 break;
1404         }
1405         STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0);
1406         stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2);
1407 }
1408
1409 /*
1410  * stb0899_set_iterations
1411  * set the LDPC iteration scale function
1412  */
1413 static void stb0899_set_iterations(struct stb0899_state *state)
1414 {
1415         struct stb0899_internal *internal = &state->internal;
1416         struct stb0899_config *config = state->config;
1417
1418         s32 iter_scale;
1419         u32 reg;
1420
1421         iter_scale = 17 * (internal->master_clk / 1000);
1422         iter_scale += 410000;
1423         iter_scale /= (internal->srate / 1000000);
1424         iter_scale /= 1000;
1425
1426         if (iter_scale > config->ldpc_max_iter)
1427                 iter_scale = config->ldpc_max_iter;
1428
1429         reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER);
1430         STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);
1431         stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
1432 }
1433
1434 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe)
1435 {
1436         struct stb0899_state *state = fe->demodulator_priv;
1437         struct stb0899_params *i_params = &state->params;
1438         struct stb0899_internal *internal = &state->internal;
1439         struct stb0899_config *config = state->config;
1440         struct dtv_frontend_properties *props = &fe->dtv_property_cache;
1441
1442         u32 SearchRange, gain;
1443
1444         i_params->freq  = props->frequency;
1445         i_params->srate = props->symbol_rate;
1446         state->delsys = props->delivery_system;
1447         dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys);
1448
1449         SearchRange = 10000000;
1450         dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate);
1451         /* checking Search Range is meaningless for a fixed 3 Mhz                       */
1452         if (INRANGE(i_params->srate, 1000000, 45000000)) {
1453                 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE");
1454                 stb0899_set_delivery(state);
1455
1456                 if (state->config->tuner_set_rfsiggain) {
1457                         if (internal->srate > 15000000)
1458                                 gain =  8; /* 15Mb < srate < 45Mb, gain = 8dB   */
1459                         else if (internal->srate > 5000000)
1460                                 gain = 12; /*  5Mb < srate < 15Mb, gain = 12dB  */
1461                         else
1462                                 gain = 14; /*  1Mb < srate <  5Mb, gain = 14db  */
1463                         state->config->tuner_set_rfsiggain(fe, gain);
1464                 }
1465
1466                 if (i_params->srate <= 5000000)
1467                         stb0899_set_mclk(state, config->lo_clk);
1468                 else
1469                         stb0899_set_mclk(state, config->hi_clk);
1470
1471                 switch (state->delsys) {
1472                 case SYS_DVBS:
1473                 case SYS_DSS:
1474                         dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system");
1475                         internal->freq  = i_params->freq;
1476                         internal->srate = i_params->srate;
1477                         /*
1478                          * search = user search range +
1479                          *          500Khz +
1480                          *          2 * Tuner_step_size +
1481                          *          10% of the symbol rate
1482                          */
1483                         internal->srch_range    = SearchRange + 1500000 + (i_params->srate / 5);
1484                         internal->derot_percent = 30;
1485
1486                         /* What to do for tuners having no bandwidth setup ?    */
1487                         /* enable tuner I/O */
1488                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1489
1490                         if (state->config->tuner_set_bandwidth)
1491                                 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10);
1492                         if (state->config->tuner_get_bandwidth)
1493                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1494
1495                         /* disable tuner I/O */
1496                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1497
1498                         /* Set DVB-S1 AGC               */
1499                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11);
1500
1501                         /* Run the search algorithm     */
1502                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo ..");
1503                         if (stb0899_dvbs_algo(state)    == RANGEOK) {
1504                                 internal->lock          = 1;
1505                                 dprintk(state->verbose, FE_DEBUG, 1,
1506                                         "-------------------------------------> DVB-S LOCK !");
1507
1508 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors     */
1509 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1510 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1511 //                              dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status);
1512 //                              dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl);
1513
1514                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1515                         } else {
1516                                 internal->lock          = 0;
1517
1518                                 return DVBFE_ALGO_SEARCH_FAILED;
1519                         }
1520                         break;
1521                 case SYS_DVBS2:
1522                         internal->freq                  = i_params->freq;
1523                         internal->srate                 = i_params->srate;
1524                         internal->srch_range            = SearchRange;
1525
1526                         /* enable tuner I/O */
1527                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1528
1529                         if (state->config->tuner_set_bandwidth)
1530                                 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange));
1531                         if (state->config->tuner_get_bandwidth)
1532                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1533
1534                         /* disable tuner I/O */
1535                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1536
1537 //                      pParams->SpectralInv            = pSearch->IQ_Inversion;
1538
1539                         /* Set DVB-S2 AGC               */
1540                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c);
1541
1542                         /* Set IterScale =f(MCLK,SYMB)  */
1543                         stb0899_set_iterations(state);
1544
1545                         /* Run the search algorithm     */
1546                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo ..");
1547                         if (stb0899_dvbs2_algo(state)   == DVBS2_FEC_LOCK) {
1548                                 internal->lock          = 1;
1549                                 dprintk(state->verbose, FE_DEBUG, 1,
1550                                         "-------------------------------------> DVB-S2 LOCK !");
1551
1552 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors      */
1553 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1554 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1555
1556                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1557                         } else {
1558                                 internal->lock          = 0;
1559
1560                                 return DVBFE_ALGO_SEARCH_FAILED;
1561                         }
1562                         break;
1563                 default:
1564                         dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1565                         return DVBFE_ALGO_SEARCH_INVALID;
1566                 }
1567         }
1568
1569         return DVBFE_ALGO_SEARCH_ERROR;
1570 }
1571
1572 static int stb0899_get_frontend(struct dvb_frontend *fe)
1573 {
1574         struct dtv_frontend_properties *p = &fe->dtv_property_cache;
1575         struct stb0899_state *state             = fe->demodulator_priv;
1576         struct stb0899_internal *internal       = &state->internal;
1577
1578         dprintk(state->verbose, FE_DEBUG, 1, "Get params");
1579         p->symbol_rate = internal->srate;
1580
1581         return 0;
1582 }
1583
1584 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe)
1585 {
1586         return DVBFE_ALGO_CUSTOM;
1587 }
1588
1589 static struct dvb_frontend_ops stb0899_ops = {
1590         .delsys = { SYS_DVBS, SYS_DVBS2, SYS_DSS },
1591         .info = {
1592                 .name                   = "STB0899 Multistandard",
1593                 .frequency_min          = 950000,
1594                 .frequency_max          = 2150000,
1595                 .frequency_stepsize     = 0,
1596                 .frequency_tolerance    = 0,
1597                 .symbol_rate_min        =  5000000,
1598                 .symbol_rate_max        = 45000000,
1599
1600                 .caps                   = FE_CAN_INVERSION_AUTO |
1601                                           FE_CAN_FEC_AUTO       |
1602                                           FE_CAN_2G_MODULATION  |
1603                                           FE_CAN_QPSK
1604         },
1605
1606         .release                        = stb0899_release,
1607         .init                           = stb0899_init,
1608         .sleep                          = stb0899_sleep,
1609 //      .wakeup                         = stb0899_wakeup,
1610
1611         .i2c_gate_ctrl                  = stb0899_i2c_gate_ctrl,
1612
1613         .get_frontend_algo              = stb0899_frontend_algo,
1614         .search                         = stb0899_search,
1615         .get_frontend                   = stb0899_get_frontend,
1616
1617
1618         .read_status                    = stb0899_read_status,
1619         .read_snr                       = stb0899_read_snr,
1620         .read_signal_strength           = stb0899_read_signal_strength,
1621         .read_ber                       = stb0899_read_ber,
1622
1623         .set_voltage                    = stb0899_set_voltage,
1624         .set_tone                       = stb0899_set_tone,
1625
1626         .diseqc_send_master_cmd         = stb0899_send_diseqc_msg,
1627         .diseqc_recv_slave_reply        = stb0899_recv_slave_reply,
1628         .diseqc_send_burst              = stb0899_send_diseqc_burst,
1629 };
1630
1631 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c)
1632 {
1633         struct stb0899_state *state = NULL;
1634         enum stb0899_inversion inversion;
1635
1636         state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL);
1637         if (state == NULL)
1638                 goto error;
1639
1640         inversion                               = config->inversion;
1641         state->verbose                          = &verbose;
1642         state->config                           = config;
1643         state->i2c                              = i2c;
1644         state->frontend.ops                     = stb0899_ops;
1645         state->frontend.demodulator_priv        = state;
1646         state->internal.inversion               = inversion;
1647
1648         stb0899_wakeup(&state->frontend);
1649         if (stb0899_get_dev_id(state) == -ENODEV) {
1650                 printk("%s: Exiting .. !\n", __func__);
1651                 goto error;
1652         }
1653
1654         printk("%s: Attaching STB0899 \n", __func__);
1655         return &state->frontend;
1656
1657 error:
1658         kfree(state);
1659         return NULL;
1660 }
1661 EXPORT_SYMBOL(stb0899_attach);
1662 MODULE_PARM_DESC(verbose, "Set Verbosity level");
1663 MODULE_AUTHOR("Manu Abraham");
1664 MODULE_DESCRIPTION("STB0899 Multi-Std frontend");
1665 MODULE_LICENSE("GPL");