a04c782fff8d7466f118d04708cf6a9e0779d427
[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/string.h>
26
27 #include <linux/dvb/frontend.h>
28 #include "dvb_frontend.h"
29
30 #include "stb0899_drv.h"
31 #include "stb0899_priv.h"
32 #include "stb0899_reg.h"
33
34 static unsigned int verbose = 0;//1;
35 module_param(verbose, int, 0644);
36
37 /* C/N in dB/10, NIRM/NIRL */
38 static const struct stb0899_tab stb0899_cn_tab[] = {
39         { 200,  2600 },
40         { 190,  2700 },
41         { 180,  2860 },
42         { 170,  3020 },
43         { 160,  3210 },
44         { 150,  3440 },
45         { 140,  3710 },
46         { 130,  4010 },
47         { 120,  4360 },
48         { 110,  4740 },
49         { 100,  5190 },
50         { 90,   5670 },
51         { 80,   6200 },
52         { 70,   6770 },
53         { 60,   7360 },
54         { 50,   7970 },
55         { 40,   8250 },
56         { 30,   9000 },
57         { 20,   9450 },
58         { 15,   9600 },
59 };
60
61 /* DVB-S AGCIQ_VALUE vs. signal level in dBm/10.
62  * As measured, connected to a modulator.
63  * -8.0 to -50.0 dBm directly connected,
64  * -52.0 to -74.8 with extra attenuation.
65  * Cut-off to AGCIQ_VALUE = 0x80 below -74.8dBm.
66  * Crude linear extrapolation below -84.8dBm and above -8.0dBm.
67  */
68 static const struct stb0899_tab stb0899_dvbsrf_tab[] = {
69         { -950, -128 },
70         { -748,  -94 },
71         { -745,  -92 },
72         { -735,  -90 },
73         { -720,  -87 },
74         { -670,  -77 },
75         { -640,  -70 },
76         { -610,  -62 },
77         { -600,  -60 },
78         { -590,  -56 },
79         { -560,  -41 },
80         { -540,  -25 },
81         { -530,  -17 },
82         { -520,  -11 },
83         { -500,    1 },
84         { -490,    6 },
85         { -480,   10 },
86         { -440,   22 },
87         { -420,   27 },
88         { -400,   31 },
89         { -380,   34 },
90         { -340,   40 },
91         { -320,   43 },
92         { -280,   48 },
93         { -250,   52 },
94         { -230,   55 },
95         { -180,   61 },
96         { -140,   66 },
97         {  -90,   73 },
98         {  -80,   74 },
99         {  500,  127 }
100 };
101
102 /* DVB-S2 IF_AGC_GAIN vs. signal level in dBm/10.
103  * As measured, connected to a modulator.
104  * -8.0 to -50.1 dBm directly connected,
105  * -53.0 to -76.6 with extra attenuation.
106  * Cut-off to IF_AGC_GAIN = 0x3fff below -76.6dBm.
107  * Crude linear extrapolation below -76.6dBm and above -8.0dBm.
108  */
109 static const struct stb0899_tab stb0899_dvbs2rf_tab[] = {
110         {  700,     0 },
111         {  -80,  3217 },
112         { -150,  3893 },
113         { -190,  4217 },
114         { -240,  4621 },
115         { -280,  4945 },
116         { -320,  5273 },
117         { -350,  5545 },
118         { -370,  5741 },
119         { -410,  6147 },
120         { -450,  6671 },
121         { -490,  7413 },
122         { -501,  7665 },
123         { -530,  8767 },
124         { -560, 10219 },
125         { -580, 10939 },
126         { -590, 11518 },
127         { -600, 11723 },
128         { -650, 12659 },
129         { -690, 13219 },
130         { -730, 13645 },
131         { -750, 13909 },
132         { -766, 14153 },
133         { -999, 16383 }
134 };
135
136 /* DVB-S2 Es/N0 quant in dB/100 vs read value * 100*/
137 static struct stb0899_tab stb0899_quant_tab[] = {
138         {    0,     0 },
139         {    0,   100 },
140         {  600,   200 },
141         {  950,   299 },
142         { 1200,   398 },
143         { 1400,   501 },
144         { 1560,   603 },
145         { 1690,   700 },
146         { 1810,   804 },
147         { 1910,   902 },
148         { 2000,  1000 },
149         { 2080,  1096 },
150         { 2160,  1202 },
151         { 2230,  1303 },
152         { 2350,  1496 },
153         { 2410,  1603 },
154         { 2460,  1698 },
155         { 2510,  1799 },
156         { 2600,  1995 },
157         { 2650,  2113 },
158         { 2690,  2213 },
159         { 2720,  2291 },
160         { 2760,  2399 },
161         { 2800,  2512 },
162         { 2860,  2692 },
163         { 2930,  2917 },
164         { 2960,  3020 },
165         { 3010,  3199 },
166         { 3040,  3311 },
167         { 3060,  3388 },
168         { 3120,  3631 },
169         { 3190,  3936 },
170         { 3400,  5012 },
171         { 3610,  6383 },
172         { 3800,  7943 },
173         { 4210, 12735 },
174         { 4500, 17783 },
175         { 4690, 22131 },
176         { 4810, 25410 }
177 };
178
179 /* DVB-S2 Es/N0 estimate in dB/100 vs read value */
180 static struct stb0899_tab stb0899_est_tab[] = {
181         {    0,      0 },
182         {    0,      1 },
183         {  301,      2 },
184         { 1204,     16 },
185         { 1806,     64 },
186         { 2408,    256 },
187         { 2709,    512 },
188         { 3010,   1023 },
189         { 3311,   2046 },
190         { 3612,   4093 },
191         { 3823,   6653 },
192         { 3913,   8185 },
193         { 4010,  10233 },
194         { 4107,  12794 },
195         { 4214,  16368 },
196         { 4266,  18450 },
197         { 4311,  20464 },
198         { 4353,  22542 },
199         { 4391,  24604 },
200         { 4425,  26607 },
201         { 4457,  28642 },
202         { 4487,  30690 },
203         { 4515,  32734 },
204         { 4612,  40926 },
205         { 4692,  49204 },
206         { 4816,  65464 },
207         { 4913,  81846 },
208         { 4993,  98401 },
209         { 5060, 114815 },
210         { 5118, 131220 },
211         { 5200, 158489 },
212         { 5300, 199526 },
213         { 5400, 251189 },
214         { 5500, 316228 },
215         { 5600, 398107 },
216         { 5720, 524807 },
217         { 5721, 526017 },
218 };
219
220 static int _stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
221 {
222         int ret;
223
224         u8 b0[] = { reg >> 8, reg & 0xff };
225         u8 buf;
226
227         struct i2c_msg msg[] = {
228                 {
229                         .addr   = state->config->demod_address,
230                         .flags  = 0,
231                         .buf    = b0,
232                         .len    = 2
233                 },{
234                         .addr   = state->config->demod_address,
235                         .flags  = I2C_M_RD,
236                         .buf    = &buf,
237                         .len    = 1
238                 }
239         };
240
241         ret = i2c_transfer(state->i2c, msg, 2);
242         if (ret != 2) {
243                 if (ret != -ERESTARTSYS)
244                         dprintk(state->verbose, FE_ERROR, 1,
245                                 "Read error, Reg=[0x%02x], Status=%d",
246                                 reg, ret);
247
248                 return ret < 0 ? ret : -EREMOTEIO;
249         }
250         if (unlikely(*state->verbose >= FE_DEBUGREG))
251                 dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%02x], data=%02x",
252                         reg, buf);
253
254         return (unsigned int)buf;
255 }
256
257 int stb0899_read_reg(struct stb0899_state *state, unsigned int reg)
258 {
259         int result;
260
261         result = _stb0899_read_reg(state, reg);
262         /*
263          * Bug ID 9:
264          * access to 0xf2xx/0xf6xx
265          * must be followed by read from 0xf2ff/0xf6ff.
266          */
267         if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
268             (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
269                 _stb0899_read_reg(state, (reg | 0x00ff));
270
271         return result;
272 }
273
274 u32 _stb0899_read_s2reg(struct stb0899_state *state,
275                         u32 stb0899_i2cdev,
276                         u32 stb0899_base_addr,
277                         u16 stb0899_reg_offset)
278 {
279         int status;
280         u32 data;
281         u8 buf[7] = { 0 };
282         u16 tmpaddr;
283
284         u8 buf_0[] = {
285                 GETBYTE(stb0899_i2cdev, BYTE1),         /* 0xf3 S2 Base Address (MSB)   */
286                 GETBYTE(stb0899_i2cdev, BYTE0),         /* 0xfc S2 Base Address (LSB)   */
287                 GETBYTE(stb0899_base_addr, BYTE0),      /* 0x00 Base Address (LSB)      */
288                 GETBYTE(stb0899_base_addr, BYTE1),      /* 0x04 Base Address (LSB)      */
289                 GETBYTE(stb0899_base_addr, BYTE2),      /* 0x00 Base Address (MSB)      */
290                 GETBYTE(stb0899_base_addr, BYTE3),      /* 0x00 Base Address (MSB)      */
291         };
292         u8 buf_1[] = {
293                 0x00,   /* 0xf3 Reg Offset      */
294                 0x00,   /* 0x44 Reg Offset      */
295         };
296
297         struct i2c_msg msg_0 = {
298                 .addr   = state->config->demod_address,
299                 .flags  = 0,
300                 .buf    = buf_0,
301                 .len    = 6
302         };
303
304         struct i2c_msg msg_1 = {
305                 .addr   = state->config->demod_address,
306                 .flags  = 0,
307                 .buf    = buf_1,
308                 .len    = 2
309         };
310
311         struct i2c_msg msg_r = {
312                 .addr   = state->config->demod_address,
313                 .flags  = I2C_M_RD,
314                 .buf    = buf,
315                 .len    = 4
316         };
317
318         tmpaddr = stb0899_reg_offset & 0xff00;
319         if (!(stb0899_reg_offset & 0x8))
320                 tmpaddr = stb0899_reg_offset | 0x20;
321
322         buf_1[0] = GETBYTE(tmpaddr, BYTE1);
323         buf_1[1] = GETBYTE(tmpaddr, BYTE0);
324
325         status = i2c_transfer(state->i2c, &msg_0, 1);
326         if (status < 1) {
327                 if (status != -ERESTARTSYS)
328                         printk(KERN_ERR "%s ERR(1), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
329                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
330
331                 goto err;
332         }
333
334         /* Dummy        */
335         status = i2c_transfer(state->i2c, &msg_1, 1);
336         if (status < 1)
337                 goto err;
338
339         status = i2c_transfer(state->i2c, &msg_r, 1);
340         if (status < 1)
341                 goto err;
342
343         buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
344         buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
345
346         /* Actual       */
347         status = i2c_transfer(state->i2c, &msg_1, 1);
348         if (status < 1) {
349                 if (status != -ERESTARTSYS)
350                         printk(KERN_ERR "%s ERR(2), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
351                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
352                 goto err;
353         }
354
355         status = i2c_transfer(state->i2c, &msg_r, 1);
356         if (status < 1) {
357                 if (status != -ERESTARTSYS)
358                         printk(KERN_ERR "%s ERR(3), Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Status=%d\n",
359                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, status);
360                 return status < 0 ? status : -EREMOTEIO;
361         }
362
363         data = MAKEWORD32(buf[3], buf[2], buf[1], buf[0]);
364         if (unlikely(*state->verbose >= FE_DEBUGREG))
365                 printk(KERN_DEBUG "%s Device=[0x%04x], Base address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
366                        __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, data);
367
368         return data;
369
370 err:
371         return status < 0 ? status : -EREMOTEIO;
372 }
373
374 int stb0899_write_s2reg(struct stb0899_state *state,
375                         u32 stb0899_i2cdev,
376                         u32 stb0899_base_addr,
377                         u16 stb0899_reg_offset,
378                         u32 stb0899_data)
379 {
380         int status;
381
382         /* Base Address Setup   */
383         u8 buf_0[] = {
384                 GETBYTE(stb0899_i2cdev, BYTE1),         /* 0xf3 S2 Base Address (MSB)   */
385                 GETBYTE(stb0899_i2cdev, BYTE0),         /* 0xfc S2 Base Address (LSB)   */
386                 GETBYTE(stb0899_base_addr, BYTE0),      /* 0x00 Base Address (LSB)      */
387                 GETBYTE(stb0899_base_addr, BYTE1),      /* 0x04 Base Address (LSB)      */
388                 GETBYTE(stb0899_base_addr, BYTE2),      /* 0x00 Base Address (MSB)      */
389                 GETBYTE(stb0899_base_addr, BYTE3),      /* 0x00 Base Address (MSB)      */
390         };
391         u8 buf_1[] = {
392                 0x00,   /* 0xf3 Reg Offset      */
393                 0x00,   /* 0x44 Reg Offset      */
394                 0x00,   /* data                 */
395                 0x00,   /* data                 */
396                 0x00,   /* data                 */
397                 0x00,   /* data                 */
398         };
399
400         struct i2c_msg msg_0 = {
401                 .addr   = state->config->demod_address,
402                 .flags  = 0,
403                 .buf    = buf_0,
404                 .len    = 6
405         };
406
407         struct i2c_msg msg_1 = {
408                 .addr   = state->config->demod_address,
409                 .flags  = 0,
410                 .buf    = buf_1,
411                 .len    = 6
412         };
413
414         buf_1[0] = GETBYTE(stb0899_reg_offset, BYTE1);
415         buf_1[1] = GETBYTE(stb0899_reg_offset, BYTE0);
416         buf_1[2] = GETBYTE(stb0899_data, BYTE0);
417         buf_1[3] = GETBYTE(stb0899_data, BYTE1);
418         buf_1[4] = GETBYTE(stb0899_data, BYTE2);
419         buf_1[5] = GETBYTE(stb0899_data, BYTE3);
420
421         if (unlikely(*state->verbose >= FE_DEBUGREG))
422                 printk(KERN_DEBUG "%s Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x]\n",
423                        __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data);
424
425         status = i2c_transfer(state->i2c, &msg_0, 1);
426         if (unlikely(status < 1)) {
427                 if (status != -ERESTARTSYS)
428                         printk(KERN_ERR "%s ERR (1), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
429                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
430                 goto err;
431         }
432         status = i2c_transfer(state->i2c, &msg_1, 1);
433         if (unlikely(status < 1)) {
434                 if (status != -ERESTARTSYS)
435                         printk(KERN_ERR "%s ERR (2), Device=[0x%04x], Base Address=[0x%08x], Offset=[0x%04x], Data=[0x%08x], status=%d\n",
436                                __func__, stb0899_i2cdev, stb0899_base_addr, stb0899_reg_offset, stb0899_data, status);
437
438                 return status < 0 ? status : -EREMOTEIO;
439         }
440
441         return 0;
442
443 err:
444         return status < 0 ? status : -EREMOTEIO;
445 }
446
447 int stb0899_read_regs(struct stb0899_state *state, unsigned int reg, u8 *buf, u32 count)
448 {
449         int status;
450
451         u8 b0[] = { reg >> 8, reg & 0xff };
452
453         struct i2c_msg msg[] = {
454                 {
455                         .addr   = state->config->demod_address,
456                         .flags  = 0,
457                         .buf    = b0,
458                         .len    = 2
459                 },{
460                         .addr   = state->config->demod_address,
461                         .flags  = I2C_M_RD,
462                         .buf    = buf,
463                         .len    = count
464                 }
465         };
466
467         status = i2c_transfer(state->i2c, msg, 2);
468         if (status != 2) {
469                 if (status != -ERESTARTSYS)
470                         printk(KERN_ERR "%s Read error, Reg=[0x%04x], Count=%u, Status=%d\n",
471                                __func__, reg, count, status);
472                 goto err;
473         }
474         /*
475          * Bug ID 9:
476          * access to 0xf2xx/0xf6xx
477          * must be followed by read from 0xf2ff/0xf6ff.
478          */
479         if ((reg != 0xf2ff) && (reg != 0xf6ff) &&
480             (((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
481                 _stb0899_read_reg(state, (reg | 0x00ff));
482
483         if (unlikely(*state->verbose >= FE_DEBUGREG)) {
484                 int i;
485
486                 printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg);
487                 for (i = 0; i < count; i++) {
488                         printk(" %02x", buf[i]);
489                 }
490                 printk("\n");
491         }
492
493         return 0;
494 err:
495         return status < 0 ? status : -EREMOTEIO;
496 }
497
498 int stb0899_write_regs(struct stb0899_state *state, unsigned int reg, u8 *data, u32 count)
499 {
500         int ret;
501         u8 buf[2 + count];
502         struct i2c_msg i2c_msg = {
503                 .addr   = state->config->demod_address,
504                 .flags  = 0,
505                 .buf    = buf,
506                 .len    = 2 + count
507         };
508
509         buf[0] = reg >> 8;
510         buf[1] = reg & 0xff;
511         memcpy(&buf[2], data, count);
512
513         if (unlikely(*state->verbose >= FE_DEBUGREG)) {
514                 int i;
515
516                 printk(KERN_DEBUG "%s [0x%04x]:", __func__, reg);
517                 for (i = 0; i < count; i++)
518                         printk(" %02x", data[i]);
519                 printk("\n");
520         }
521         ret = i2c_transfer(state->i2c, &i2c_msg, 1);
522
523         /*
524          * Bug ID 9:
525          * access to 0xf2xx/0xf6xx
526          * must be followed by read from 0xf2ff/0xf6ff.
527          */
528         if ((((reg & 0xff00) == 0xf200) || ((reg & 0xff00) == 0xf600)))
529                 stb0899_read_reg(state, (reg | 0x00ff));
530
531         if (ret != 1) {
532                 if (ret != -ERESTARTSYS)
533                         dprintk(state->verbose, FE_ERROR, 1, "Reg=[0x%04x], Data=[0x%02x ...], Count=%u, Status=%d",
534                                 reg, data[0], count, ret);
535                 return ret < 0 ? ret : -EREMOTEIO;
536         }
537
538         return 0;
539 }
540
541 int stb0899_write_reg(struct stb0899_state *state, unsigned int reg, u8 data)
542 {
543         return stb0899_write_regs(state, reg, &data, 1);
544 }
545
546 /*
547  * stb0899_get_mclk
548  * Get STB0899 master clock frequency
549  * ExtClk: external clock frequency (Hz)
550  */
551 static u32 stb0899_get_mclk(struct stb0899_state *state)
552 {
553         u32 mclk = 0, div = 0;
554
555         div = stb0899_read_reg(state, STB0899_NCOARSE);
556         mclk = (div + 1) * state->config->xtal_freq / 6;
557         dprintk(state->verbose, FE_DEBUG, 1, "div=%d, mclk=%d", div, mclk);
558
559         return mclk;
560 }
561
562 /*
563  * stb0899_set_mclk
564  * Set STB0899 master Clock frequency
565  * Mclk: demodulator master clock
566  * ExtClk: external clock frequency (Hz)
567  */
568 static void stb0899_set_mclk(struct stb0899_state *state, u32 Mclk)
569 {
570         struct stb0899_internal *internal = &state->internal;
571         u8 mdiv = 0;
572
573         dprintk(state->verbose, FE_DEBUG, 1, "state->config=%p", state->config);
574         mdiv = ((6 * Mclk) / state->config->xtal_freq) - 1;
575         dprintk(state->verbose, FE_DEBUG, 1, "mdiv=%d", mdiv);
576
577         stb0899_write_reg(state, STB0899_NCOARSE, mdiv);
578         internal->master_clk = stb0899_get_mclk(state);
579
580         dprintk(state->verbose, FE_DEBUG, 1, "MasterCLOCK=%d", internal->master_clk);
581 }
582
583 static int stb0899_postproc(struct stb0899_state *state, u8 ctl, int enable)
584 {
585         struct stb0899_config *config           = state->config;
586         const struct stb0899_postproc *postproc = config->postproc;
587
588         /* post process event */
589         if (postproc) {
590                 if (enable) {
591                         if (postproc[ctl].level == STB0899_GPIOPULLUP)
592                                 stb0899_write_reg(state, postproc[ctl].gpio, 0x02);
593                         else
594                                 stb0899_write_reg(state, postproc[ctl].gpio, 0x82);
595                 } else {
596                         if (postproc[ctl].level == STB0899_GPIOPULLUP)
597                                 stb0899_write_reg(state, postproc[ctl].gpio, 0x82);
598                         else
599                                 stb0899_write_reg(state, postproc[ctl].gpio, 0x02);
600                 }
601         }
602         return 0;
603 }
604
605 static void stb0899_release(struct dvb_frontend *fe)
606 {
607         struct stb0899_state *state = fe->demodulator_priv;
608
609         dprintk(state->verbose, FE_DEBUG, 1, "Release Frontend");
610         /* post process event */
611         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
612         kfree(state);
613 }
614
615 /*
616  * stb0899_get_alpha
617  * return: rolloff
618  */
619 static int stb0899_get_alpha(struct stb0899_state *state)
620 {
621         u8 mode_coeff;
622
623         mode_coeff = stb0899_read_reg(state, STB0899_DEMOD);
624
625         if (STB0899_GETFIELD(MODECOEFF, mode_coeff) == 1)
626                 return 20;
627         else
628                 return 35;
629 }
630
631 /*
632  * stb0899_init_calc
633  */
634 static void stb0899_init_calc(struct stb0899_state *state)
635 {
636         struct stb0899_internal *internal = &state->internal;
637         int master_clk;
638         u8 agc[2];
639         u8 agc1cn;
640         u32 reg;
641
642         /* Read registers (in burst mode)       */
643         agc1cn = stb0899_read_reg(state, STB0899_AGC1CN);
644         stb0899_read_regs(state, STB0899_AGC1REF, agc, 2); /* AGC1R and AGC2O   */
645
646         /* Initial calculations */
647         master_clk                      = stb0899_get_mclk(state);
648         internal->t_agc1                = 0;
649         internal->t_agc2                = 0;
650         internal->master_clk            = master_clk;
651         internal->mclk                  = master_clk / 65536L;
652         internal->rolloff               = stb0899_get_alpha(state);
653
654         /* DVBS2 Initial calculations   */
655         /* Set AGC value to the middle  */
656         internal->agc_gain              = 8154;
657         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, IF_AGC_CNTRL);
658         STB0899_SETFIELD_VAL(IF_GAIN_INIT, reg, internal->agc_gain);
659         stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_IF_AGC_CNTRL, STB0899_OFF0_IF_AGC_CNTRL, reg);
660
661         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, RRC_ALPHA);
662         internal->rrc_alpha             = STB0899_GETFIELD(RRC_ALPHA, reg);
663
664         internal->center_freq           = 0;
665         internal->av_frame_coarse       = 10;
666         internal->av_frame_fine         = 20;
667         internal->step_size             = 2;
668 /*
669         if ((pParams->SpectralInv == FE_IQ_NORMAL) || (pParams->SpectralInv == FE_IQ_AUTO))
670                 pParams->IQLocked = 0;
671         else
672                 pParams->IQLocked = 1;
673 */
674 }
675
676 static int stb0899_wait_diseqc_fifo_empty(struct stb0899_state *state, int timeout)
677 {
678         u8 reg = 0;
679         unsigned long start = jiffies;
680
681         while (1) {
682                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
683                 if (!STB0899_GETFIELD(FIFOFULL, reg))
684                         break;
685                 if ((jiffies - start) > timeout) {
686                         dprintk(state->verbose, FE_ERROR, 1, "timed out !!");
687                         return -ETIMEDOUT;
688                 }
689         }
690
691         return 0;
692 }
693
694 static int stb0899_send_diseqc_msg(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)
695 {
696         struct stb0899_state *state = fe->demodulator_priv;
697         u8 reg, i;
698
699         if (cmd->msg_len > 8)
700                 return -EINVAL;
701
702         /* enable FIFO precharge        */
703         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
704         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 1);
705         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
706         for (i = 0; i < cmd->msg_len; i++) {
707                 /* wait for FIFO empty  */
708                 if (stb0899_wait_diseqc_fifo_empty(state, 10) < 0)
709                         return -ETIMEDOUT;
710
711                 stb0899_write_reg(state, STB0899_DISFIFO, cmd->msg[i]);
712         }
713         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
714         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0);
715         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
716
717         return 0;
718 }
719
720 static int stb0899_wait_diseqc_rxidle(struct stb0899_state *state, int timeout)
721 {
722         u8 reg = 0;
723         unsigned long start = jiffies;
724
725         while (!STB0899_GETFIELD(RXEND, reg)) {
726                 reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
727                 if (jiffies - start > timeout) {
728                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
729                         return -ETIMEDOUT;
730                 }
731                 msleep(10);
732         }
733
734         return 0;
735 }
736
737 static int stb0899_recv_slave_reply(struct dvb_frontend *fe, struct dvb_diseqc_slave_reply *reply)
738 {
739         struct stb0899_state *state = fe->demodulator_priv;
740         u8 reg, length = 0, i;
741         int result;
742
743         if (stb0899_wait_diseqc_rxidle(state, 100) < 0)
744                 return -ETIMEDOUT;
745
746         reg = stb0899_read_reg(state, STB0899_DISRX_ST0);
747         if (STB0899_GETFIELD(RXEND, reg)) {
748
749                 reg = stb0899_read_reg(state, STB0899_DISRX_ST1);
750                 length = STB0899_GETFIELD(FIFOBYTENBR, reg);
751
752                 if (length > sizeof (reply->msg)) {
753                         result = -EOVERFLOW;
754                         goto exit;
755                 }
756                 reply->msg_len = length;
757
758                 /* extract data */
759                 for (i = 0; i < length; i++)
760                         reply->msg[i] = stb0899_read_reg(state, STB0899_DISFIFO);
761         }
762
763         return 0;
764 exit:
765
766         return result;
767 }
768
769 static int stb0899_wait_diseqc_txidle(struct stb0899_state *state, int timeout)
770 {
771         u8 reg = 0;
772         unsigned long start = jiffies;
773
774         while (!STB0899_GETFIELD(TXIDLE, reg)) {
775                 reg = stb0899_read_reg(state, STB0899_DISSTATUS);
776                 if (jiffies - start > timeout) {
777                         dprintk(state->verbose, FE_ERROR, 1, "timed out!!");
778                         return -ETIMEDOUT;
779                 }
780                 msleep(10);
781         }
782         return 0;
783 }
784
785 static int stb0899_send_diseqc_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t burst)
786 {
787         struct stb0899_state *state = fe->demodulator_priv;
788         u8 reg, old_state;
789
790         /* wait for diseqc idle */
791         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
792                 return -ETIMEDOUT;
793
794         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
795         old_state = reg;
796         /* set to burst mode    */
797         STB0899_SETFIELD_VAL(DISEQCMODE, reg, 0x03);
798         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x01);
799         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
800         switch (burst) {
801         case SEC_MINI_A:
802                 /* unmodulated  */
803                 stb0899_write_reg(state, STB0899_DISFIFO, 0x00);
804                 break;
805         case SEC_MINI_B:
806                 /* modulated    */
807                 stb0899_write_reg(state, STB0899_DISFIFO, 0xff);
808                 break;
809         }
810         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
811         STB0899_SETFIELD_VAL(DISPRECHARGE, reg, 0x00);
812         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
813         /* wait for diseqc idle */
814         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
815                 return -ETIMEDOUT;
816
817         /* restore state        */
818         stb0899_write_reg(state, STB0899_DISCNTRL1, old_state);
819
820         return 0;
821 }
822
823 static int stb0899_diseqc_init(struct stb0899_state *state)
824 {
825         struct dvb_diseqc_master_cmd tx_data;
826 /*
827         struct dvb_diseqc_slave_reply rx_data;
828 */
829         u8 f22_tx, f22_rx, reg;
830
831         u32 mclk, tx_freq = 22000;/* count = 0, i; */
832         tx_data.msg[0] = 0xe2;
833         tx_data.msg_len = 3;
834         reg = stb0899_read_reg(state, STB0899_DISCNTRL2);
835         STB0899_SETFIELD_VAL(ONECHIP_TRX, reg, 0);
836         stb0899_write_reg(state, STB0899_DISCNTRL2, reg);
837
838         /* disable Tx spy       */
839         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
840         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 1);
841         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
842
843         reg = stb0899_read_reg(state, STB0899_DISCNTRL1);
844         STB0899_SETFIELD_VAL(DISEQCRESET, reg, 0);
845         stb0899_write_reg(state, STB0899_DISCNTRL1, reg);
846
847         mclk = stb0899_get_mclk(state);
848         f22_tx = mclk / (tx_freq * 32);
849         stb0899_write_reg(state, STB0899_DISF22, f22_tx); /* DiSEqC Tx freq     */
850         state->rx_freq = 20000;
851         f22_rx = mclk / (state->rx_freq * 32);
852
853         return 0;
854 }
855
856 static int stb0899_sleep(struct dvb_frontend *fe)
857 {
858         struct stb0899_state *state = fe->demodulator_priv;
859 /*
860         u8 reg;
861 */
862         dprintk(state->verbose, FE_DEBUG, 1, "Going to Sleep .. (Really tired .. :-))");
863         /* post process event */
864         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 0);
865
866         return 0;
867 }
868
869 static int stb0899_wakeup(struct dvb_frontend *fe)
870 {
871         int rc;
872         struct stb0899_state *state = fe->demodulator_priv;
873
874         if ((rc = stb0899_write_reg(state, STB0899_SYNTCTRL, STB0899_SELOSCI)))
875                 return rc;
876         /* Activate all clocks; DVB-S2 registers are inaccessible otherwise. */
877         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK1, 0x00)))
878                 return rc;
879         if ((rc = stb0899_write_reg(state, STB0899_STOPCLK2, 0x00)))
880                 return rc;
881
882         /* post process event */
883         stb0899_postproc(state, STB0899_POSTPROC_GPIO_POWER, 1);
884
885         return 0;
886 }
887
888 static int stb0899_init(struct dvb_frontend *fe)
889 {
890         int i;
891         struct stb0899_state *state = fe->demodulator_priv;
892         struct stb0899_config *config = state->config;
893
894         dprintk(state->verbose, FE_DEBUG, 1, "Initializing STB0899 ... ");
895
896         /* init device          */
897         dprintk(state->verbose, FE_DEBUG, 1, "init device");
898         for (i = 0; config->init_dev[i].address != 0xffff; i++)
899                 stb0899_write_reg(state, config->init_dev[i].address, config->init_dev[i].data);
900
901         dprintk(state->verbose, FE_DEBUG, 1, "init S2 demod");
902         /* init S2 demod        */
903         for (i = 0; config->init_s2_demod[i].offset != 0xffff; i++)
904                 stb0899_write_s2reg(state, STB0899_S2DEMOD,
905                                     config->init_s2_demod[i].base_address,
906                                     config->init_s2_demod[i].offset,
907                                     config->init_s2_demod[i].data);
908
909         dprintk(state->verbose, FE_DEBUG, 1, "init S1 demod");
910         /* init S1 demod        */
911         for (i = 0; config->init_s1_demod[i].address != 0xffff; i++)
912                 stb0899_write_reg(state, config->init_s1_demod[i].address, config->init_s1_demod[i].data);
913
914         dprintk(state->verbose, FE_DEBUG, 1, "init S2 FEC");
915         /* init S2 fec          */
916         for (i = 0; config->init_s2_fec[i].offset != 0xffff; i++)
917                 stb0899_write_s2reg(state, STB0899_S2FEC,
918                                     config->init_s2_fec[i].base_address,
919                                     config->init_s2_fec[i].offset,
920                                     config->init_s2_fec[i].data);
921
922         dprintk(state->verbose, FE_DEBUG, 1, "init TST");
923         /* init test            */
924         for (i = 0; config->init_tst[i].address != 0xffff; i++)
925                 stb0899_write_reg(state, config->init_tst[i].address, config->init_tst[i].data);
926
927         stb0899_init_calc(state);
928         stb0899_diseqc_init(state);
929
930         return 0;
931 }
932
933 static int stb0899_table_lookup(const struct stb0899_tab *tab, int max, int val)
934 {
935         int res = 0;
936         int min = 0, med;
937
938         if (val < tab[min].read)
939                 res = tab[min].real;
940         else if (val >= tab[max].read)
941                 res = tab[max].real;
942         else {
943                 while ((max - min) > 1) {
944                         med = (max + min) / 2;
945                         if (val >= tab[min].read && val < tab[med].read)
946                                 max = med;
947                         else
948                                 min = med;
949                 }
950                 res = ((val - tab[min].read) *
951                        (tab[max].real - tab[min].real) /
952                        (tab[max].read - tab[min].read)) +
953                         tab[min].real;
954         }
955
956         return res;
957 }
958
959 static int stb0899_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
960 {
961         struct stb0899_state *state             = fe->demodulator_priv;
962         struct stb0899_internal *internal       = &state->internal;
963
964         int val;
965         u32 reg;
966         switch (state->delsys) {
967         case SYS_DVBS:
968         case SYS_DSS:
969                 if (internal->lock) {
970                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
971                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
972
973                                 reg = stb0899_read_reg(state, STB0899_AGCIQIN);
974                                 val = (s32)(s8)STB0899_GETFIELD(AGCIQVALUE, reg);
975
976                                 *strength = stb0899_table_lookup(stb0899_dvbsrf_tab, ARRAY_SIZE(stb0899_dvbsrf_tab) - 1, val);
977                                 *strength += 750;
978                                 dprintk(state->verbose, FE_DEBUG, 1, "AGCIQVALUE = 0x%02x, C = %d * 0.1 dBm",
979                                         val & 0xff, *strength);
980                         }
981                 }
982                 break;
983         case SYS_DVBS2:
984                 if (internal->lock) {
985                         reg = STB0899_READ_S2REG(STB0899_DEMOD, IF_AGC_GAIN);
986                         val = STB0899_GETFIELD(IF_AGC_GAIN, reg);
987
988                         *strength = stb0899_table_lookup(stb0899_dvbs2rf_tab, ARRAY_SIZE(stb0899_dvbs2rf_tab) - 1, val);
989                         *strength += 750;
990                         dprintk(state->verbose, FE_DEBUG, 1, "IF_AGC_GAIN = 0x%04x, C = %d * 0.1 dBm",
991                                 val & 0x3fff, *strength);
992                 }
993                 break;
994         default:
995                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
996                 return -EINVAL;
997         }
998
999         return 0;
1000 }
1001
1002 static int stb0899_read_snr(struct dvb_frontend *fe, u16 *snr)
1003 {
1004         struct stb0899_state *state             = fe->demodulator_priv;
1005         struct stb0899_internal *internal       = &state->internal;
1006
1007         unsigned int val, quant, quantn = -1, est, estn = -1;
1008         u8 buf[2];
1009         u32 reg;
1010
1011         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1012         switch (state->delsys) {
1013         case SYS_DVBS:
1014         case SYS_DSS:
1015                 if (internal->lock) {
1016                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1017
1018                                 stb0899_read_regs(state, STB0899_NIRM, buf, 2);
1019                                 val = MAKEWORD16(buf[0], buf[1]);
1020
1021                                 *snr = stb0899_table_lookup(stb0899_cn_tab, ARRAY_SIZE(stb0899_cn_tab) - 1, val);
1022                                 dprintk(state->verbose, FE_DEBUG, 1, "NIR = 0x%02x%02x = %u, C/N = %d * 0.1 dBm\n",
1023                                         buf[0], buf[1], val, *snr);
1024                         }
1025                 }
1026                 break;
1027         case SYS_DVBS2:
1028                 if (internal->lock) {
1029                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_CNTRL1);
1030                         quant = STB0899_GETFIELD(UWP_ESN0_QUANT, reg);
1031                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, UWP_STAT2);
1032                         est = STB0899_GETFIELD(ESN0_EST, reg);
1033                         if (est == 1)
1034                                 val = 301; /* C/N = 30.1 dB */
1035                         else if (est == 2)
1036                                 val = 270; /* C/N = 27.0 dB */
1037                         else {
1038                                 /* quantn = 100 * log(quant^2) */
1039                                 quantn = stb0899_table_lookup(stb0899_quant_tab, ARRAY_SIZE(stb0899_quant_tab) - 1, quant * 100);
1040                                 /* estn = 100 * log(est) */
1041                                 estn = stb0899_table_lookup(stb0899_est_tab, ARRAY_SIZE(stb0899_est_tab) - 1, est);
1042                                 /* snr(dBm/10) = -10*(log(est)-log(quant^2)) => snr(dBm/10) = (100*log(quant^2)-100*log(est))/10 */
1043                                 val = (quantn - estn) / 10;
1044                         }
1045                         *snr = val;
1046                         dprintk(state->verbose, FE_DEBUG, 1, "Es/N0 quant = %d (%d) estimate = %u (%d), C/N = %d * 0.1 dBm",
1047                                 quant, quantn, est, estn, val);
1048                 }
1049                 break;
1050         default:
1051                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1052                 return -EINVAL;
1053         }
1054
1055         return 0;
1056 }
1057
1058 static int stb0899_read_status(struct dvb_frontend *fe, enum fe_status *status)
1059 {
1060         struct stb0899_state *state             = fe->demodulator_priv;
1061         struct stb0899_internal *internal       = &state->internal;
1062         u8 reg;
1063         *status = 0;
1064
1065         switch (state->delsys) {
1066         case SYS_DVBS:
1067         case SYS_DSS:
1068                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S/DSS");
1069                 if (internal->lock) {
1070                         reg  = stb0899_read_reg(state, STB0899_VSTATUS);
1071                         if (STB0899_GETFIELD(VSTATUS_LOCKEDVIT, reg)) {
1072                                 dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_CARRIER | FE_HAS_LOCK");
1073                                 *status |= FE_HAS_CARRIER | FE_HAS_LOCK;
1074
1075                                 reg = stb0899_read_reg(state, STB0899_PLPARM);
1076                                 if (STB0899_GETFIELD(VITCURPUN, reg)) {
1077                                         dprintk(state->verbose, FE_DEBUG, 1, "--------> FE_HAS_VITERBI | FE_HAS_SYNC");
1078                                         *status |= FE_HAS_VITERBI | FE_HAS_SYNC;
1079                                         /* post process event */
1080                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1081                                 }
1082                         }
1083                 }
1084                 break;
1085         case SYS_DVBS2:
1086                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery system DVB-S2");
1087                 if (internal->lock) {
1088                         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_STAT2);
1089                         if (STB0899_GETFIELD(UWP_LOCK, reg) && STB0899_GETFIELD(CSM_LOCK, reg)) {
1090                                 *status |= FE_HAS_CARRIER;
1091                                 dprintk(state->verbose, FE_DEBUG, 1,
1092                                         "UWP & CSM Lock ! ---> DVB-S2 FE_HAS_CARRIER");
1093
1094                                 reg = stb0899_read_reg(state, STB0899_CFGPDELSTATUS1);
1095                                 if (STB0899_GETFIELD(CFGPDELSTATUS_LOCK, reg)) {
1096                                         *status |= FE_HAS_LOCK;
1097                                         dprintk(state->verbose, FE_DEBUG, 1,
1098                                                 "Packet Delineator Locked ! -----> DVB-S2 FE_HAS_LOCK");
1099
1100                                 }
1101                                 if (STB0899_GETFIELD(CONTINUOUS_STREAM, reg)) {
1102                                         *status |= FE_HAS_VITERBI;
1103                                         dprintk(state->verbose, FE_DEBUG, 1,
1104                                                 "Packet Delineator found VITERBI ! -----> DVB-S2 FE_HAS_VITERBI");
1105                                 }
1106                                 if (STB0899_GETFIELD(ACCEPTED_STREAM, reg)) {
1107                                         *status |= FE_HAS_SYNC;
1108                                         dprintk(state->verbose, FE_DEBUG, 1,
1109                                                 "Packet Delineator found SYNC ! -----> DVB-S2 FE_HAS_SYNC");
1110                                         /* post process event */
1111                                         stb0899_postproc(state, STB0899_POSTPROC_GPIO_LOCK, 1);
1112                                 }
1113                         }
1114                 }
1115                 break;
1116         default:
1117                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1118                 return -EINVAL;
1119         }
1120         return 0;
1121 }
1122
1123 /*
1124  * stb0899_get_error
1125  * viterbi error for DVB-S/DSS
1126  * packet error for DVB-S2
1127  * Bit Error Rate or Packet Error Rate * 10 ^ 7
1128  */
1129 static int stb0899_read_ber(struct dvb_frontend *fe, u32 *ber)
1130 {
1131         struct stb0899_state *state             = fe->demodulator_priv;
1132         struct stb0899_internal *internal       = &state->internal;
1133
1134         u8  lsb, msb;
1135         u32 i;
1136
1137         *ber = 0;
1138
1139         switch (state->delsys) {
1140         case SYS_DVBS:
1141         case SYS_DSS:
1142                 if (internal->lock) {
1143                         /* average 5 BER values */
1144                         for (i = 0; i < 5; i++) {
1145                                 msleep(100);
1146                                 lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1147                                 msb = stb0899_read_reg(state, STB0899_ECNT1M);
1148                                 *ber += MAKEWORD16(msb, lsb);
1149                         }
1150                         *ber /= 5;
1151                         /* Viterbi Check        */
1152                         if (STB0899_GETFIELD(VSTATUS_PRFVIT, internal->v_status)) {
1153                                 /* Error Rate           */
1154                                 *ber *= 9766;
1155                                 /* ber = ber * 10 ^ 7   */
1156                                 *ber /= (-1 + (1 << (2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1157                                 *ber /= 8;
1158                         }
1159                 }
1160                 break;
1161         case SYS_DVBS2:
1162                 if (internal->lock) {
1163                         /* Average 5 PER values */
1164                         for (i = 0; i < 5; i++) {
1165                                 msleep(100);
1166                                 lsb = stb0899_read_reg(state, STB0899_ECNT1L);
1167                                 msb = stb0899_read_reg(state, STB0899_ECNT1M);
1168                                 *ber += MAKEWORD16(msb, lsb);
1169                         }
1170                         /* ber = ber * 10 ^ 7   */
1171                         *ber *= 10000000;
1172                         *ber /= (-1 + (1 << (4 + 2 * STB0899_GETFIELD(NOE, internal->err_ctrl))));
1173                 }
1174                 break;
1175         default:
1176                 dprintk(state->verbose, FE_DEBUG, 1, "Unsupported delivery system");
1177                 return -EINVAL;
1178         }
1179
1180         return 0;
1181 }
1182
1183 static int stb0899_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
1184 {
1185         struct stb0899_state *state = fe->demodulator_priv;
1186
1187         switch (voltage) {
1188         case SEC_VOLTAGE_13:
1189                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1190                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1191                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x00);
1192                 break;
1193         case SEC_VOLTAGE_18:
1194                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x02);
1195                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x02);
1196                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1197                 break;
1198         case SEC_VOLTAGE_OFF:
1199                 stb0899_write_reg(state, STB0899_GPIO00CFG, 0x82);
1200                 stb0899_write_reg(state, STB0899_GPIO01CFG, 0x82);
1201                 stb0899_write_reg(state, STB0899_GPIO02CFG, 0x82);
1202                 break;
1203         default:
1204                 return -EINVAL;
1205         }
1206
1207         return 0;
1208 }
1209
1210 static int stb0899_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
1211 {
1212         struct stb0899_state *state = fe->demodulator_priv;
1213         struct stb0899_internal *internal = &state->internal;
1214
1215         u8 div, reg;
1216
1217         /* wait for diseqc idle */
1218         if (stb0899_wait_diseqc_txidle(state, 100) < 0)
1219                 return -ETIMEDOUT;
1220
1221         switch (tone) {
1222         case SEC_TONE_ON:
1223                 div = (internal->master_clk / 100) / 5632;
1224                 div = (div + 5) / 10;
1225                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x66);
1226                 reg = stb0899_read_reg(state, STB0899_ACRPRESC);
1227                 STB0899_SETFIELD_VAL(ACRPRESC, reg, 0x03);
1228                 stb0899_write_reg(state, STB0899_ACRPRESC, reg);
1229                 stb0899_write_reg(state, STB0899_ACRDIV1, div);
1230                 break;
1231         case SEC_TONE_OFF:
1232                 stb0899_write_reg(state, STB0899_DISEQCOCFG, 0x20);
1233                 break;
1234         default:
1235                 return -EINVAL;
1236         }
1237         return 0;
1238 }
1239
1240 int stb0899_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
1241 {
1242         int i2c_stat;
1243         struct stb0899_state *state = fe->demodulator_priv;
1244
1245         i2c_stat = stb0899_read_reg(state, STB0899_I2CRPT);
1246         if (i2c_stat < 0)
1247                 goto err;
1248
1249         if (enable) {
1250                 dprintk(state->verbose, FE_DEBUG, 1, "Enabling I2C Repeater ...");
1251                 i2c_stat |=  STB0899_I2CTON;
1252                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1253                         goto err;
1254         } else {
1255                 dprintk(state->verbose, FE_DEBUG, 1, "Disabling I2C Repeater ...");
1256                 i2c_stat &= ~STB0899_I2CTON;
1257                 if (stb0899_write_reg(state, STB0899_I2CRPT, i2c_stat) < 0)
1258                         goto err;
1259         }
1260         return 0;
1261 err:
1262         dprintk(state->verbose, FE_ERROR, 1, "I2C Repeater control failed");
1263         return -EREMOTEIO;
1264 }
1265
1266
1267 static inline void CONVERT32(u32 x, char *str)
1268 {
1269         *str++  = (x >> 24) & 0xff;
1270         *str++  = (x >> 16) & 0xff;
1271         *str++  = (x >>  8) & 0xff;
1272         *str++  = (x >>  0) & 0xff;
1273         *str    = '\0';
1274 }
1275
1276 int stb0899_get_dev_id(struct stb0899_state *state)
1277 {
1278         u8 chip_id, release;
1279         u16 id;
1280         u32 demod_ver = 0, fec_ver = 0;
1281         char demod_str[5] = { 0 };
1282         char fec_str[5] = { 0 };
1283
1284         id = stb0899_read_reg(state, STB0899_DEV_ID);
1285         dprintk(state->verbose, FE_DEBUG, 1, "ID reg=[0x%02x]", id);
1286         chip_id = STB0899_GETFIELD(CHIP_ID, id);
1287         release = STB0899_GETFIELD(CHIP_REL, id);
1288
1289         dprintk(state->verbose, FE_ERROR, 1, "Device ID=[%d], Release=[%d]",
1290                 chip_id, release);
1291
1292         CONVERT32(STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_CORE_ID), (char *)&demod_str);
1293
1294         demod_ver = STB0899_READ_S2REG(STB0899_S2DEMOD, DMD_VERSION_ID);
1295         dprintk(state->verbose, FE_ERROR, 1, "Demodulator Core ID=[%s], Version=[%d]", (char *) &demod_str, demod_ver);
1296         CONVERT32(STB0899_READ_S2REG(STB0899_S2FEC, FEC_CORE_ID_REG), (char *)&fec_str);
1297         fec_ver = STB0899_READ_S2REG(STB0899_S2FEC, FEC_VER_ID_REG);
1298         if (! (chip_id > 0)) {
1299                 dprintk(state->verbose, FE_ERROR, 1, "couldn't find a STB 0899");
1300
1301                 return -ENODEV;
1302         }
1303         dprintk(state->verbose, FE_ERROR, 1, "FEC Core ID=[%s], Version=[%d]", (char*) &fec_str, fec_ver);
1304
1305         return 0;
1306 }
1307
1308 static void stb0899_set_delivery(struct stb0899_state *state)
1309 {
1310         u8 reg;
1311         u8 stop_clk[2];
1312
1313         stop_clk[0] = stb0899_read_reg(state, STB0899_STOPCLK1);
1314         stop_clk[1] = stb0899_read_reg(state, STB0899_STOPCLK2);
1315
1316         switch (state->delsys) {
1317         case SYS_DVBS:
1318                 dprintk(state->verbose, FE_DEBUG, 1, "Delivery System -- DVB-S");
1319                 /* FECM/Viterbi ON      */
1320                 reg = stb0899_read_reg(state, STB0899_FECM);
1321                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1322                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1323                 stb0899_write_reg(state, STB0899_FECM, reg);
1324
1325                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1326                 stb0899_write_reg(state, STB0899_TSULC, 0x40);
1327                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1328                 stb0899_write_reg(state, STB0899_TSLPL, 0x12);
1329
1330                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1331                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1332                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1333
1334                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1335                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1336                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1337
1338                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1339                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1340
1341                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 1);
1342                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1343
1344                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1345                 break;
1346         case SYS_DVBS2:
1347                 /* FECM/Viterbi OFF     */
1348                 reg = stb0899_read_reg(state, STB0899_FECM);
1349                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 0);
1350                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 0);
1351                 stb0899_write_reg(state, STB0899_FECM, reg);
1352
1353                 stb0899_write_reg(state, STB0899_RSULC, 0xb1);
1354                 stb0899_write_reg(state, STB0899_TSULC, 0x42);
1355                 stb0899_write_reg(state, STB0899_RSLLC, 0x40);
1356                 stb0899_write_reg(state, STB0899_TSLPL, 0x02);
1357
1358                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1359                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 0);
1360                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1361
1362                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1363                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 0);
1364                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 0);
1365
1366                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 0);
1367                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 0);
1368
1369                 STB0899_SETFIELD_VAL(STOP_CKINTBUF216, stop_clk[0], 0);
1370                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1371
1372                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 0);
1373                 break;
1374         case SYS_DSS:
1375                 /* FECM/Viterbi ON      */
1376                 reg = stb0899_read_reg(state, STB0899_FECM);
1377                 STB0899_SETFIELD_VAL(FECM_RSVD0, reg, 1);
1378                 STB0899_SETFIELD_VAL(FECM_VITERBI_ON, reg, 1);
1379                 stb0899_write_reg(state, STB0899_FECM, reg);
1380
1381                 stb0899_write_reg(state, STB0899_RSULC, 0xa1);
1382                 stb0899_write_reg(state, STB0899_TSULC, 0x61);
1383                 stb0899_write_reg(state, STB0899_RSLLC, 0x42);
1384
1385                 reg = stb0899_read_reg(state, STB0899_TSTRES);
1386                 STB0899_SETFIELD_VAL(FRESLDPC, reg, 1);
1387                 stb0899_write_reg(state, STB0899_TSTRES, reg);
1388
1389                 STB0899_SETFIELD_VAL(STOP_CHK8PSK, stop_clk[0], 1);
1390                 STB0899_SETFIELD_VAL(STOP_CKFEC108, stop_clk[0], 1);
1391                 STB0899_SETFIELD_VAL(STOP_CKFEC216, stop_clk[0], 1);
1392
1393                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN108, stop_clk[1], 1);
1394                 STB0899_SETFIELD_VAL(STOP_CKPKDLIN216, stop_clk[1], 1);
1395
1396                 STB0899_SETFIELD_VAL(STOP_CKCORE216, stop_clk[0], 0);
1397
1398                 STB0899_SETFIELD_VAL(STOP_CKS2DMD108, stop_clk[1], 1);
1399                 break;
1400         default:
1401                 dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1402                 break;
1403         }
1404         STB0899_SETFIELD_VAL(STOP_CKADCI108, stop_clk[0], 0);
1405         stb0899_write_regs(state, STB0899_STOPCLK1, stop_clk, 2);
1406 }
1407
1408 /*
1409  * stb0899_set_iterations
1410  * set the LDPC iteration scale function
1411  */
1412 static void stb0899_set_iterations(struct stb0899_state *state)
1413 {
1414         struct stb0899_internal *internal = &state->internal;
1415         struct stb0899_config *config = state->config;
1416
1417         s32 iter_scale;
1418         u32 reg;
1419
1420         iter_scale = 17 * (internal->master_clk / 1000);
1421         iter_scale += 410000;
1422         iter_scale /= (internal->srate / 1000000);
1423         iter_scale /= 1000;
1424
1425         if (iter_scale > config->ldpc_max_iter)
1426                 iter_scale = config->ldpc_max_iter;
1427
1428         reg = STB0899_READ_S2REG(STB0899_S2DEMOD, MAX_ITER);
1429         STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);
1430         stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
1431 }
1432
1433 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
1434 {
1435         struct stb0899_state *state = fe->demodulator_priv;
1436         struct stb0899_params *i_params = &state->params;
1437         struct stb0899_internal *internal = &state->internal;
1438         struct stb0899_config *config = state->config;
1439         struct dtv_frontend_properties *props = &fe->dtv_property_cache;
1440
1441         u32 SearchRange, gain;
1442
1443         i_params->freq  = p->frequency;
1444         i_params->srate = p->u.qpsk.symbol_rate;
1445         state->delsys = props->delivery_system;
1446         dprintk(state->verbose, FE_DEBUG, 1, "delivery system=%d", state->delsys);
1447
1448         SearchRange = 10000000;
1449         dprintk(state->verbose, FE_DEBUG, 1, "Frequency=%d, Srate=%d", i_params->freq, i_params->srate);
1450         /* checking Search Range is meaningless for a fixed 3 Mhz                       */
1451         if (INRANGE(i_params->srate, 1000000, 45000000)) {
1452                 dprintk(state->verbose, FE_DEBUG, 1, "Parameters IN RANGE");
1453                 stb0899_set_delivery(state);
1454
1455                 if (state->config->tuner_set_rfsiggain) {
1456                         if (internal->srate > 15000000)
1457                                 gain =  8; /* 15Mb < srate < 45Mb, gain = 8dB   */
1458                         else if (internal->srate > 5000000)
1459                                 gain = 12; /*  5Mb < srate < 15Mb, gain = 12dB  */
1460                         else
1461                                 gain = 14; /*  1Mb < srate <  5Mb, gain = 14db  */
1462                         state->config->tuner_set_rfsiggain(fe, gain);
1463                 }
1464
1465                 if (i_params->srate <= 5000000)
1466                         stb0899_set_mclk(state, config->lo_clk);
1467                 else
1468                         stb0899_set_mclk(state, config->hi_clk);
1469
1470                 switch (state->delsys) {
1471                 case SYS_DVBS:
1472                 case SYS_DSS:
1473                         dprintk(state->verbose, FE_DEBUG, 1, "DVB-S delivery system");
1474                         internal->freq  = i_params->freq;
1475                         internal->srate = i_params->srate;
1476                         /*
1477                          * search = user search range +
1478                          *          500Khz +
1479                          *          2 * Tuner_step_size +
1480                          *          10% of the symbol rate
1481                          */
1482                         internal->srch_range    = SearchRange + 1500000 + (i_params->srate / 5);
1483                         internal->derot_percent = 30;
1484
1485                         /* What to do for tuners having no bandwidth setup ?    */
1486                         /* enable tuner I/O */
1487                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1488
1489                         if (state->config->tuner_set_bandwidth)
1490                                 state->config->tuner_set_bandwidth(fe, (13 * (stb0899_carr_width(state) + SearchRange)) / 10);
1491                         if (state->config->tuner_get_bandwidth)
1492                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1493
1494                         /* disable tuner I/O */
1495                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1496
1497                         /* Set DVB-S1 AGC               */
1498                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x11);
1499
1500                         /* Run the search algorithm     */
1501                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S search algo ..");
1502                         if (stb0899_dvbs_algo(state)    == RANGEOK) {
1503                                 internal->lock          = 1;
1504                                 dprintk(state->verbose, FE_DEBUG, 1,
1505                                         "-------------------------------------> DVB-S LOCK !");
1506
1507 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0x3d); /* Viterbi Errors     */
1508 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1509 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1510 //                              dprintk(state->verbose, FE_DEBUG, 1, "VSTATUS=0x%02x", internal->v_status);
1511 //                              dprintk(state->verbose, FE_DEBUG, 1, "ERR_CTRL=0x%02x", internal->err_ctrl);
1512
1513                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1514                         } else {
1515                                 internal->lock          = 0;
1516
1517                                 return DVBFE_ALGO_SEARCH_FAILED;
1518                         }
1519                         break;
1520                 case SYS_DVBS2:
1521                         internal->freq                  = i_params->freq;
1522                         internal->srate                 = i_params->srate;
1523                         internal->srch_range            = SearchRange;
1524
1525                         /* enable tuner I/O */
1526                         stb0899_i2c_gate_ctrl(&state->frontend, 1);
1527
1528                         if (state->config->tuner_set_bandwidth)
1529                                 state->config->tuner_set_bandwidth(fe, (stb0899_carr_width(state) + SearchRange));
1530                         if (state->config->tuner_get_bandwidth)
1531                                 state->config->tuner_get_bandwidth(fe, &internal->tuner_bw);
1532
1533                         /* disable tuner I/O */
1534                         stb0899_i2c_gate_ctrl(&state->frontend, 0);
1535
1536 //                      pParams->SpectralInv            = pSearch->IQ_Inversion;
1537
1538                         /* Set DVB-S2 AGC               */
1539                         stb0899_write_reg(state, STB0899_AGCRFCFG, 0x1c);
1540
1541                         /* Set IterScale =f(MCLK,SYMB)  */
1542                         stb0899_set_iterations(state);
1543
1544                         /* Run the search algorithm     */
1545                         dprintk(state->verbose, FE_DEBUG, 1, "running DVB-S2 search algo ..");
1546                         if (stb0899_dvbs2_algo(state)   == DVBS2_FEC_LOCK) {
1547                                 internal->lock          = 1;
1548                                 dprintk(state->verbose, FE_DEBUG, 1,
1549                                         "-------------------------------------> DVB-S2 LOCK !");
1550
1551 //                              stb0899_write_reg(state, STB0899_ERRCTRL1, 0xb6); /* Packet Errors      */
1552 //                              internal->v_status = stb0899_read_reg(state, STB0899_VSTATUS);
1553 //                              internal->err_ctrl = stb0899_read_reg(state, STB0899_ERRCTRL1);
1554
1555                                 return DVBFE_ALGO_SEARCH_SUCCESS;
1556                         } else {
1557                                 internal->lock          = 0;
1558
1559                                 return DVBFE_ALGO_SEARCH_FAILED;
1560                         }
1561                         break;
1562                 default:
1563                         dprintk(state->verbose, FE_ERROR, 1, "Unsupported delivery system");
1564                         return DVBFE_ALGO_SEARCH_INVALID;
1565                 }
1566         }
1567
1568         return DVBFE_ALGO_SEARCH_ERROR;
1569 }
1570 /*
1571  * stb0899_track
1572  * periodically check the signal level against a specified
1573  * threshold level and perform derotator centering.
1574  * called once we have a lock from a succesful search
1575  * event.
1576  *
1577  * Will be called periodically called to maintain the
1578  * lock.
1579  *
1580  * Will be used to get parameters as well as info from
1581  * the decoded baseband header
1582  *
1583  * Once a new lock has established, the internal state
1584  * frequency (internal->freq) is updated
1585  */
1586 static int stb0899_track(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
1587 {
1588         return 0;
1589 }
1590
1591 static int stb0899_get_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
1592 {
1593         struct stb0899_state *state             = fe->demodulator_priv;
1594         struct stb0899_internal *internal       = &state->internal;
1595
1596         dprintk(state->verbose, FE_DEBUG, 1, "Get params");
1597         p->u.qpsk.symbol_rate = internal->srate;
1598
1599         return 0;
1600 }
1601
1602 static enum dvbfe_algo stb0899_frontend_algo(struct dvb_frontend *fe)
1603 {
1604         return DVBFE_ALGO_CUSTOM;
1605 }
1606
1607 static struct dvb_frontend_ops stb0899_ops = {
1608
1609         .info = {
1610                 .name                   = "STB0899 Multistandard",
1611                 .type                   = FE_QPSK,
1612                 .frequency_min          = 950000,
1613                 .frequency_max          = 2150000,
1614                 .frequency_stepsize     = 0,
1615                 .frequency_tolerance    = 0,
1616                 .symbol_rate_min        =  5000000,
1617                 .symbol_rate_max        = 45000000,
1618
1619                 .caps                   = FE_CAN_INVERSION_AUTO |
1620                                           FE_CAN_FEC_AUTO       |
1621                                           FE_CAN_2G_MODULATION  |
1622                                           FE_CAN_QPSK
1623         },
1624
1625         .release                        = stb0899_release,
1626         .init                           = stb0899_init,
1627         .sleep                          = stb0899_sleep,
1628 //      .wakeup                         = stb0899_wakeup,
1629
1630         .i2c_gate_ctrl                  = stb0899_i2c_gate_ctrl,
1631
1632         .get_frontend_algo              = stb0899_frontend_algo,
1633         .search                         = stb0899_search,
1634         .track                          = stb0899_track,
1635         .get_frontend                   = stb0899_get_frontend,
1636
1637
1638         .read_status                    = stb0899_read_status,
1639         .read_snr                       = stb0899_read_snr,
1640         .read_signal_strength           = stb0899_read_signal_strength,
1641         .read_ber                       = stb0899_read_ber,
1642
1643         .set_voltage                    = stb0899_set_voltage,
1644         .set_tone                       = stb0899_set_tone,
1645
1646         .diseqc_send_master_cmd         = stb0899_send_diseqc_msg,
1647         .diseqc_recv_slave_reply        = stb0899_recv_slave_reply,
1648         .diseqc_send_burst              = stb0899_send_diseqc_burst,
1649 };
1650
1651 struct dvb_frontend *stb0899_attach(struct stb0899_config *config, struct i2c_adapter *i2c)
1652 {
1653         struct stb0899_state *state = NULL;
1654         enum stb0899_inversion inversion;
1655
1656         state = kzalloc(sizeof (struct stb0899_state), GFP_KERNEL);
1657         if (state == NULL)
1658                 goto error;
1659
1660         inversion                               = config->inversion;
1661         state->verbose                          = &verbose;
1662         state->config                           = config;
1663         state->i2c                              = i2c;
1664         state->frontend.ops                     = stb0899_ops;
1665         state->frontend.demodulator_priv        = state;
1666         state->internal.inversion               = inversion;
1667
1668         stb0899_wakeup(&state->frontend);
1669         if (stb0899_get_dev_id(state) == -ENODEV) {
1670                 printk("%s: Exiting .. !\n", __func__);
1671                 goto error;
1672         }
1673
1674         printk("%s: Attaching STB0899 \n", __func__);
1675         return &state->frontend;
1676
1677 error:
1678         kfree(state);
1679         return NULL;
1680 }
1681 EXPORT_SYMBOL(stb0899_attach);
1682 MODULE_PARM_DESC(verbose, "Set Verbosity level");
1683 MODULE_AUTHOR("Manu Abraham");
1684 MODULE_DESCRIPTION("STB0899 Multi-Std frontend");
1685 MODULE_LICENSE("GPL");