1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Linux-DVB Driver for DiBcom's second generation DiB7000P (PC).
4 *
5 * Copyright (C) 2005-7 DiBcom (http://www.dibcom.fr/)
6 */
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include <linux/kernel.h>
11 #include <linux/slab.h>
12 #include <linux/i2c.h>
13 #include <linux/mutex.h>
14 #include <asm/div64.h>
15
16 #include <linux/int_log.h>
17 #include <media/dvb_frontend.h>
18
19 #include "dib7000p.h"
20
21 static int debug;
22 module_param(debug, int, 0644);
23 MODULE_PARM_DESC(debug, "turn on debugging (default: 0)");
24
25 static int buggy_sfn_workaround;
26 module_param(buggy_sfn_workaround, int, 0644);
27 MODULE_PARM_DESC(buggy_sfn_workaround, "Enable work-around for buggy SFNs (default: 0)");
28
29 #define dprintk(fmt, arg...) do { \
30 if (debug) \
31 printk(KERN_DEBUG pr_fmt("%s: " fmt), \
32 __func__, ##arg); \
33 } while (0)
34
35 struct dib7000p_state {
36 struct dvb_frontend demod;
37 struct dib7000p_config cfg;
38
39 u8 i2c_addr;
40 struct i2c_adapter *i2c_adap;
41
42 struct dibx000_i2c_master i2c_master;
43
44 u16 wbd_ref;
45
46 u8 current_band;
47 u32 current_bandwidth;
48 struct dibx000_agc_config *current_agc;
49 u32 timf;
50
51 u8 div_force_off:1;
52 u8 div_state:1;
53 u16 div_sync_wait;
54
55 u8 agc_state;
56
57 u16 gpio_dir;
58 u16 gpio_val;
59
60 u8 sfn_workaround_active:1;
61
62 #define SOC7090 0x7090
63 u16 version;
64
65 u16 tuner_enable;
66 struct i2c_adapter dib7090_tuner_adap;
67
68 /* for the I2C transfer */
69 struct i2c_msg msg[2];
70 u8 i2c_write_buffer[4];
71 u8 i2c_read_buffer[2];
72 struct mutex i2c_buffer_lock;
73
74 u8 input_mode_mpeg;
75
76 /* for DVBv5 stats */
77 s64 old_ucb;
78 unsigned long per_jiffies_stats;
79 unsigned long ber_jiffies_stats;
80 unsigned long get_stats_time;
81 };
82
83 enum dib7000p_power_mode {
84 DIB7000P_POWER_ALL = 0,
85 DIB7000P_POWER_ANALOG_ADC,
86 DIB7000P_POWER_INTERFACE_ONLY,
87 };
88
89 /* dib7090 specific functions */
90 static int dib7090_set_output_mode(struct dvb_frontend *fe, int mode);
91 static int dib7090_set_diversity_in(struct dvb_frontend *fe, int onoff);
92 static void dib7090_setDibTxMux(struct dib7000p_state *state, int mode);
93 static void dib7090_setHostBusMux(struct dib7000p_state *state, int mode);
94
dib7000p_read_word(struct dib7000p_state * state,u16 reg)95 static u16 dib7000p_read_word(struct dib7000p_state *state, u16 reg)
96 {
97 u16 ret;
98
99 if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
100 dprintk("could not acquire lock\n");
101 return 0;
102 }
103
104 state->i2c_write_buffer[0] = reg >> 8;
105 state->i2c_write_buffer[1] = reg & 0xff;
106
107 memset(state->msg, 0, 2 * sizeof(struct i2c_msg));
108 state->msg[0].addr = state->i2c_addr >> 1;
109 state->msg[0].flags = 0;
110 state->msg[0].buf = state->i2c_write_buffer;
111 state->msg[0].len = 2;
112 state->msg[1].addr = state->i2c_addr >> 1;
113 state->msg[1].flags = I2C_M_RD;
114 state->msg[1].buf = state->i2c_read_buffer;
115 state->msg[1].len = 2;
116
117 if (i2c_transfer(state->i2c_adap, state->msg, 2) != 2)
118 dprintk("i2c read error on %d\n", reg);
119
120 ret = (state->i2c_read_buffer[0] << 8) | state->i2c_read_buffer[1];
121 mutex_unlock(&state->i2c_buffer_lock);
122 return ret;
123 }
124
dib7000p_write_word(struct dib7000p_state * state,u16 reg,u16 val)125 static int dib7000p_write_word(struct dib7000p_state *state, u16 reg, u16 val)
126 {
127 int ret;
128
129 if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
130 dprintk("could not acquire lock\n");
131 return -EINVAL;
132 }
133
134 state->i2c_write_buffer[0] = (reg >> 8) & 0xff;
135 state->i2c_write_buffer[1] = reg & 0xff;
136 state->i2c_write_buffer[2] = (val >> 8) & 0xff;
137 state->i2c_write_buffer[3] = val & 0xff;
138
139 memset(&state->msg[0], 0, sizeof(struct i2c_msg));
140 state->msg[0].addr = state->i2c_addr >> 1;
141 state->msg[0].flags = 0;
142 state->msg[0].buf = state->i2c_write_buffer;
143 state->msg[0].len = 4;
144
145 ret = (i2c_transfer(state->i2c_adap, state->msg, 1) != 1 ?
146 -EREMOTEIO : 0);
147 mutex_unlock(&state->i2c_buffer_lock);
148 return ret;
149 }
150
dib7000p_write_tab(struct dib7000p_state * state,u16 * buf)151 static void dib7000p_write_tab(struct dib7000p_state *state, u16 * buf)
152 {
153 u16 l = 0, r, *n;
154 n = buf;
155 l = *n++;
156 while (l) {
157 r = *n++;
158
159 do {
160 dib7000p_write_word(state, r, *n++);
161 r++;
162 } while (--l);
163 l = *n++;
164 }
165 }
166
dib7000p_set_output_mode(struct dib7000p_state * state,int mode)167 static int dib7000p_set_output_mode(struct dib7000p_state *state, int mode)
168 {
169 int ret = 0;
170 u16 outreg, fifo_threshold, smo_mode;
171
172 outreg = 0;
173 fifo_threshold = 1792;
174 smo_mode = (dib7000p_read_word(state, 235) & 0x0050) | (1 << 1);
175
176 dprintk("setting output mode for demod %p to %d\n", &state->demod, mode);
177
178 switch (mode) {
179 case OUTMODE_MPEG2_PAR_GATED_CLK:
180 outreg = (1 << 10); /* 0x0400 */
181 break;
182 case OUTMODE_MPEG2_PAR_CONT_CLK:
183 outreg = (1 << 10) | (1 << 6); /* 0x0440 */
184 break;
185 case OUTMODE_MPEG2_SERIAL:
186 outreg = (1 << 10) | (2 << 6) | (0 << 1); /* 0x0480 */
187 break;
188 case OUTMODE_DIVERSITY:
189 if (state->cfg.hostbus_diversity)
190 outreg = (1 << 10) | (4 << 6); /* 0x0500 */
191 else
192 outreg = (1 << 11);
193 break;
194 case OUTMODE_MPEG2_FIFO:
195 smo_mode |= (3 << 1);
196 fifo_threshold = 512;
197 outreg = (1 << 10) | (5 << 6);
198 break;
199 case OUTMODE_ANALOG_ADC:
200 outreg = (1 << 10) | (3 << 6);
201 break;
202 case OUTMODE_HIGH_Z:
203 outreg = 0;
204 break;
205 default:
206 dprintk("Unhandled output_mode passed to be set for demod %p\n", &state->demod);
207 break;
208 }
209
210 if (state->cfg.output_mpeg2_in_188_bytes)
211 smo_mode |= (1 << 5);
212
213 ret |= dib7000p_write_word(state, 235, smo_mode);
214 ret |= dib7000p_write_word(state, 236, fifo_threshold); /* synchronous fread */
215 if (state->version != SOC7090)
216 ret |= dib7000p_write_word(state, 1286, outreg); /* P_Div_active */
217
218 return ret;
219 }
220
dib7000p_set_diversity_in(struct dvb_frontend * demod,int onoff)221 static int dib7000p_set_diversity_in(struct dvb_frontend *demod, int onoff)
222 {
223 struct dib7000p_state *state = demod->demodulator_priv;
224
225 if (state->div_force_off) {
226 dprintk("diversity combination deactivated - forced by COFDM parameters\n");
227 onoff = 0;
228 dib7000p_write_word(state, 207, 0);
229 } else
230 dib7000p_write_word(state, 207, (state->div_sync_wait << 4) | (1 << 2) | (2 << 0));
231
232 state->div_state = (u8) onoff;
233
234 if (onoff) {
235 dib7000p_write_word(state, 204, 6);
236 dib7000p_write_word(state, 205, 16);
237 /* P_dvsy_sync_mode = 0, P_dvsy_sync_enable=1, P_dvcb_comb_mode=2 */
238 } else {
239 dib7000p_write_word(state, 204, 1);
240 dib7000p_write_word(state, 205, 0);
241 }
242
243 return 0;
244 }
245
dib7000p_set_power_mode(struct dib7000p_state * state,enum dib7000p_power_mode mode)246 static int dib7000p_set_power_mode(struct dib7000p_state *state, enum dib7000p_power_mode mode)
247 {
248 /* by default everything is powered off */
249 u16 reg_774 = 0x3fff, reg_775 = 0xffff, reg_776 = 0x0007, reg_899 = 0x0003, reg_1280 = (0xfe00) | (dib7000p_read_word(state, 1280) & 0x01ff);
250
251 /* now, depending on the requested mode, we power on */
252 switch (mode) {
253 /* power up everything in the demod */
254 case DIB7000P_POWER_ALL:
255 reg_774 = 0x0000;
256 reg_775 = 0x0000;
257 reg_776 = 0x0;
258 reg_899 = 0x0;
259 if (state->version == SOC7090)
260 reg_1280 &= 0x001f;
261 else
262 reg_1280 &= 0x01ff;
263 break;
264
265 case DIB7000P_POWER_ANALOG_ADC:
266 /* dem, cfg, iqc, sad, agc */
267 reg_774 &= ~((1 << 15) | (1 << 14) | (1 << 11) | (1 << 10) | (1 << 9));
268 /* nud */
269 reg_776 &= ~((1 << 0));
270 /* Dout */
271 if (state->version != SOC7090)
272 reg_1280 &= ~((1 << 11));
273 reg_1280 &= ~(1 << 6);
274 fallthrough;
275 case DIB7000P_POWER_INTERFACE_ONLY:
276 /* just leave power on the control-interfaces: GPIO and (I2C or SDIO) */
277 /* TODO power up either SDIO or I2C */
278 if (state->version == SOC7090)
279 reg_1280 &= ~((1 << 7) | (1 << 5));
280 else
281 reg_1280 &= ~((1 << 14) | (1 << 13) | (1 << 12) | (1 << 10));
282 break;
283
284 /* TODO following stuff is just converted from the dib7000-driver - check when is used what */
285 }
286
287 dib7000p_write_word(state, 774, reg_774);
288 dib7000p_write_word(state, 775, reg_775);
289 dib7000p_write_word(state, 776, reg_776);
290 dib7000p_write_word(state, 1280, reg_1280);
291 if (state->version != SOC7090)
292 dib7000p_write_word(state, 899, reg_899);
293
294 return 0;
295 }
296
dib7000p_set_adc_state(struct dib7000p_state * state,enum dibx000_adc_states no)297 static void dib7000p_set_adc_state(struct dib7000p_state *state, enum dibx000_adc_states no)
298 {
299 u16 reg_908 = 0, reg_909 = 0;
300 u16 reg;
301
302 if (state->version != SOC7090) {
303 reg_908 = dib7000p_read_word(state, 908);
304 reg_909 = dib7000p_read_word(state, 909);
305 }
306
307 switch (no) {
308 case DIBX000_SLOW_ADC_ON:
309 if (state->version == SOC7090) {
310 reg = dib7000p_read_word(state, 1925);
311
312 dib7000p_write_word(state, 1925, reg | (1 << 4) | (1 << 2)); /* en_slowAdc = 1 & reset_sladc = 1 */
313
314 reg = dib7000p_read_word(state, 1925); /* read access to make it works... strange ... */
315 msleep(200);
316 dib7000p_write_word(state, 1925, reg & ~(1 << 4)); /* en_slowAdc = 1 & reset_sladc = 0 */
317
318 reg = dib7000p_read_word(state, 72) & ~((0x3 << 14) | (0x3 << 12));
319 dib7000p_write_word(state, 72, reg | (1 << 14) | (3 << 12) | 524); /* ref = Vin1 => Vbg ; sel = Vin0 or Vin3 ; (Vin2 = Vcm) */
320 } else {
321 reg_909 |= (1 << 1) | (1 << 0);
322 dib7000p_write_word(state, 909, reg_909);
323 reg_909 &= ~(1 << 1);
324 }
325 break;
326
327 case DIBX000_SLOW_ADC_OFF:
328 if (state->version == SOC7090) {
329 reg = dib7000p_read_word(state, 1925);
330 dib7000p_write_word(state, 1925, (reg & ~(1 << 2)) | (1 << 4)); /* reset_sladc = 1 en_slowAdc = 0 */
331 } else
332 reg_909 |= (1 << 1) | (1 << 0);
333 break;
334
335 case DIBX000_ADC_ON:
336 reg_908 &= 0x0fff;
337 reg_909 &= 0x0003;
338 break;
339
340 case DIBX000_ADC_OFF:
341 reg_908 |= (1 << 14) | (1 << 13) | (1 << 12);
342 reg_909 |= (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2);
343 break;
344
345 case DIBX000_VBG_ENABLE:
346 reg_908 &= ~(1 << 15);
347 break;
348
349 case DIBX000_VBG_DISABLE:
350 reg_908 |= (1 << 15);
351 break;
352
353 default:
354 break;
355 }
356
357 // dprintk( "908: %x, 909: %x\n", reg_908, reg_909);
358
359 reg_909 |= (state->cfg.disable_sample_and_hold & 1) << 4;
360 reg_908 |= (state->cfg.enable_current_mirror & 1) << 7;
361
362 if (state->version != SOC7090) {
363 dib7000p_write_word(state, 908, reg_908);
364 dib7000p_write_word(state, 909, reg_909);
365 }
366 }
367
dib7000p_set_bandwidth(struct dib7000p_state * state,u32 bw)368 static int dib7000p_set_bandwidth(struct dib7000p_state *state, u32 bw)
369 {
370 u32 timf;
371
372 // store the current bandwidth for later use
373 state->current_bandwidth = bw;
374
375 if (state->timf == 0) {
376 dprintk("using default timf\n");
377 timf = state->cfg.bw->timf;
378 } else {
379 dprintk("using updated timf\n");
380 timf = state->timf;
381 }
382
383 timf = timf * (bw / 50) / 160;
384
385 dib7000p_write_word(state, 23, (u16) ((timf >> 16) & 0xffff));
386 dib7000p_write_word(state, 24, (u16) ((timf) & 0xffff));
387
388 return 0;
389 }
390
dib7000p_sad_calib(struct dib7000p_state * state)391 static int dib7000p_sad_calib(struct dib7000p_state *state)
392 {
393 /* internal */
394 dib7000p_write_word(state, 73, (0 << 1) | (0 << 0));
395
396 if (state->version == SOC7090)
397 dib7000p_write_word(state, 74, 2048);
398 else
399 dib7000p_write_word(state, 74, 776);
400
401 /* do the calibration */
402 dib7000p_write_word(state, 73, (1 << 0));
403 dib7000p_write_word(state, 73, (0 << 0));
404
405 msleep(1);
406
407 return 0;
408 }
409
dib7000p_set_wbd_ref(struct dvb_frontend * demod,u16 value)410 static int dib7000p_set_wbd_ref(struct dvb_frontend *demod, u16 value)
411 {
412 struct dib7000p_state *state = demod->demodulator_priv;
413 if (value > 4095)
414 value = 4095;
415 state->wbd_ref = value;
416 return dib7000p_write_word(state, 105, (dib7000p_read_word(state, 105) & 0xf000) | value);
417 }
418
dib7000p_get_agc_values(struct dvb_frontend * fe,u16 * agc_global,u16 * agc1,u16 * agc2,u16 * wbd)419 static int dib7000p_get_agc_values(struct dvb_frontend *fe,
420 u16 *agc_global, u16 *agc1, u16 *agc2, u16 *wbd)
421 {
422 struct dib7000p_state *state = fe->demodulator_priv;
423
424 if (agc_global != NULL)
425 *agc_global = dib7000p_read_word(state, 394);
426 if (agc1 != NULL)
427 *agc1 = dib7000p_read_word(state, 392);
428 if (agc2 != NULL)
429 *agc2 = dib7000p_read_word(state, 393);
430 if (wbd != NULL)
431 *wbd = dib7000p_read_word(state, 397);
432
433 return 0;
434 }
435
dib7000p_set_agc1_min(struct dvb_frontend * fe,u16 v)436 static int dib7000p_set_agc1_min(struct dvb_frontend *fe, u16 v)
437 {
438 struct dib7000p_state *state = fe->demodulator_priv;
439 return dib7000p_write_word(state, 108, v);
440 }
441
dib7000p_reset_pll(struct dib7000p_state * state)442 static void dib7000p_reset_pll(struct dib7000p_state *state)
443 {
444 struct dibx000_bandwidth_config *bw = &state->cfg.bw[0];
445 u16 clk_cfg0;
446
447 if (state->version == SOC7090) {
448 dib7000p_write_word(state, 1856, (!bw->pll_reset << 13) | (bw->pll_range << 12) | (bw->pll_ratio << 6) | (bw->pll_prediv));
449
450 while (((dib7000p_read_word(state, 1856) >> 15) & 0x1) != 1)
451 ;
452
453 dib7000p_write_word(state, 1857, dib7000p_read_word(state, 1857) | (!bw->pll_bypass << 15));
454 } else {
455 /* force PLL bypass */
456 clk_cfg0 = (1 << 15) | ((bw->pll_ratio & 0x3f) << 9) |
457 (bw->modulo << 7) | (bw->ADClkSrc << 6) | (bw->IO_CLK_en_core << 5) | (bw->bypclk_div << 2) | (bw->enable_refdiv << 1) | (0 << 0);
458
459 dib7000p_write_word(state, 900, clk_cfg0);
460
461 /* P_pll_cfg */
462 dib7000p_write_word(state, 903, (bw->pll_prediv << 5) | (((bw->pll_ratio >> 6) & 0x3) << 3) | (bw->pll_range << 1) | bw->pll_reset);
463 clk_cfg0 = (bw->pll_bypass << 15) | (clk_cfg0 & 0x7fff);
464 dib7000p_write_word(state, 900, clk_cfg0);
465 }
466
467 dib7000p_write_word(state, 18, (u16) (((bw->internal * 1000) >> 16) & 0xffff));
468 dib7000p_write_word(state, 19, (u16) ((bw->internal * 1000) & 0xffff));
469 dib7000p_write_word(state, 21, (u16) ((bw->ifreq >> 16) & 0xffff));
470 dib7000p_write_word(state, 22, (u16) ((bw->ifreq) & 0xffff));
471
472 dib7000p_write_word(state, 72, bw->sad_cfg);
473 }
474
dib7000p_get_internal_freq(struct dib7000p_state * state)475 static u32 dib7000p_get_internal_freq(struct dib7000p_state *state)
476 {
477 u32 internal = (u32) dib7000p_read_word(state, 18) << 16;
478 internal |= (u32) dib7000p_read_word(state, 19);
479 internal /= 1000;
480
481 return internal;
482 }
483
dib7000p_update_pll(struct dvb_frontend * fe,struct dibx000_bandwidth_config * bw)484 static int dib7000p_update_pll(struct dvb_frontend *fe, struct dibx000_bandwidth_config *bw)
485 {
486 struct dib7000p_state *state = fe->demodulator_priv;
487 u16 reg_1857, reg_1856 = dib7000p_read_word(state, 1856);
488 u8 loopdiv, prediv;
489 u32 internal, xtal;
490
491 /* get back old values */
492 prediv = reg_1856 & 0x3f;
493 loopdiv = (reg_1856 >> 6) & 0x3f;
494
495 if (loopdiv && bw && (bw->pll_prediv != prediv || bw->pll_ratio != loopdiv)) {
496 dprintk("Updating pll (prediv: old = %d new = %d ; loopdiv : old = %d new = %d)\n", prediv, bw->pll_prediv, loopdiv, bw->pll_ratio);
497 reg_1856 &= 0xf000;
498 reg_1857 = dib7000p_read_word(state, 1857);
499 dib7000p_write_word(state, 1857, reg_1857 & ~(1 << 15));
500
501 dib7000p_write_word(state, 1856, reg_1856 | ((bw->pll_ratio & 0x3f) << 6) | (bw->pll_prediv & 0x3f));
502
503 /* write new system clk into P_sec_len */
504 internal = dib7000p_get_internal_freq(state);
505 xtal = (internal / loopdiv) * prediv;
506 internal = 1000 * (xtal / bw->pll_prediv) * bw->pll_ratio; /* new internal */
507 dib7000p_write_word(state, 18, (u16) ((internal >> 16) & 0xffff));
508 dib7000p_write_word(state, 19, (u16) (internal & 0xffff));
509
510 dib7000p_write_word(state, 1857, reg_1857 | (1 << 15));
511
512 while (((dib7000p_read_word(state, 1856) >> 15) & 0x1) != 1)
513 dprintk("Waiting for PLL to lock\n");
514
515 return 0;
516 }
517 return -EIO;
518 }
519
dib7000p_reset_gpio(struct dib7000p_state * st)520 static int dib7000p_reset_gpio(struct dib7000p_state *st)
521 {
522 /* reset the GPIOs */
523 dprintk("gpio dir: %x: val: %x, pwm_pos: %x\n", st->gpio_dir, st->gpio_val, st->cfg.gpio_pwm_pos);
524
525 dib7000p_write_word(st, 1029, st->gpio_dir);
526 dib7000p_write_word(st, 1030, st->gpio_val);
527
528 /* TODO 1031 is P_gpio_od */
529
530 dib7000p_write_word(st, 1032, st->cfg.gpio_pwm_pos);
531
532 dib7000p_write_word(st, 1037, st->cfg.pwm_freq_div);
533 return 0;
534 }
535
dib7000p_cfg_gpio(struct dib7000p_state * st,u8 num,u8 dir,u8 val)536 static int dib7000p_cfg_gpio(struct dib7000p_state *st, u8 num, u8 dir, u8 val)
537 {
538 st->gpio_dir = dib7000p_read_word(st, 1029);
539 st->gpio_dir &= ~(1 << num); /* reset the direction bit */
540 st->gpio_dir |= (dir & 0x1) << num; /* set the new direction */
541 dib7000p_write_word(st, 1029, st->gpio_dir);
542
543 st->gpio_val = dib7000p_read_word(st, 1030);
544 st->gpio_val &= ~(1 << num); /* reset the direction bit */
545 st->gpio_val |= (val & 0x01) << num; /* set the new value */
546 dib7000p_write_word(st, 1030, st->gpio_val);
547
548 return 0;
549 }
550
dib7000p_set_gpio(struct dvb_frontend * demod,u8 num,u8 dir,u8 val)551 static int dib7000p_set_gpio(struct dvb_frontend *demod, u8 num, u8 dir, u8 val)
552 {
553 struct dib7000p_state *state = demod->demodulator_priv;
554 return dib7000p_cfg_gpio(state, num, dir, val);
555 }
556
557 static u16 dib7000p_defaults[] = {
558 // auto search configuration
559 3, 2,
560 0x0004,
561 (1<<3)|(1<<11)|(1<<12)|(1<<13),
562 0x0814, /* Equal Lock */
563
564 12, 6,
565 0x001b,
566 0x7740,
567 0x005b,
568 0x8d80,
569 0x01c9,
570 0xc380,
571 0x0000,
572 0x0080,
573 0x0000,
574 0x0090,
575 0x0001,
576 0xd4c0,
577
578 1, 26,
579 0x6680,
580
581 /* set ADC level to -16 */
582 11, 79,
583 (1 << 13) - 825 - 117,
584 (1 << 13) - 837 - 117,
585 (1 << 13) - 811 - 117,
586 (1 << 13) - 766 - 117,
587 (1 << 13) - 737 - 117,
588 (1 << 13) - 693 - 117,
589 (1 << 13) - 648 - 117,
590 (1 << 13) - 619 - 117,
591 (1 << 13) - 575 - 117,
592 (1 << 13) - 531 - 117,
593 (1 << 13) - 501 - 117,
594
595 1, 142,
596 0x0410,
597
598 /* disable power smoothing */
599 8, 145,
600 0,
601 0,
602 0,
603 0,
604 0,
605 0,
606 0,
607 0,
608
609 1, 154,
610 1 << 13,
611
612 1, 168,
613 0x0ccd,
614
615 1, 183,
616 0x200f,
617
618 1, 212,
619 0x169,
620
621 5, 187,
622 0x023d,
623 0x00a4,
624 0x00a4,
625 0x7ff0,
626 0x3ccc,
627
628 1, 198,
629 0x800,
630
631 1, 222,
632 0x0010,
633
634 1, 235,
635 0x0062,
636
637 0,
638 };
639
640 static void dib7000p_reset_stats(struct dvb_frontend *fe);
641
dib7000p_demod_reset(struct dib7000p_state * state)642 static int dib7000p_demod_reset(struct dib7000p_state *state)
643 {
644 dib7000p_set_power_mode(state, DIB7000P_POWER_ALL);
645
646 if (state->version == SOC7090)
647 dibx000_reset_i2c_master(&state->i2c_master);
648
649 dib7000p_set_adc_state(state, DIBX000_VBG_ENABLE);
650
651 /* restart all parts */
652 dib7000p_write_word(state, 770, 0xffff);
653 dib7000p_write_word(state, 771, 0xffff);
654 dib7000p_write_word(state, 772, 0x001f);
655 dib7000p_write_word(state, 1280, 0x001f - ((1 << 4) | (1 << 3)));
656
657 dib7000p_write_word(state, 770, 0);
658 dib7000p_write_word(state, 771, 0);
659 dib7000p_write_word(state, 772, 0);
660 dib7000p_write_word(state, 1280, 0);
661
662 if (state->version != SOC7090) {
663 dib7000p_write_word(state, 898, 0x0003);
664 dib7000p_write_word(state, 898, 0);
665 }
666
667 /* default */
668 dib7000p_reset_pll(state);
669
670 if (dib7000p_reset_gpio(state) != 0)
671 dprintk("GPIO reset was not successful.\n");
672
673 if (state->version == SOC7090) {
674 dib7000p_write_word(state, 899, 0);
675
676 /* impulse noise */
677 dib7000p_write_word(state, 42, (1<<5) | 3); /* P_iqc_thsat_ipc = 1 ; P_iqc_win2 = 3 */
678 dib7000p_write_word(state, 43, 0x2d4); /*-300 fag P_iqc_dect_min = -280 */
679 dib7000p_write_word(state, 44, 300); /* 300 fag P_iqc_dect_min = +280 */
680 dib7000p_write_word(state, 273, (0<<6) | 30);
681 }
682 if (dib7000p_set_output_mode(state, OUTMODE_HIGH_Z) != 0)
683 dprintk("OUTPUT_MODE could not be reset.\n");
684
685 dib7000p_set_adc_state(state, DIBX000_SLOW_ADC_ON);
686 dib7000p_sad_calib(state);
687 dib7000p_set_adc_state(state, DIBX000_SLOW_ADC_OFF);
688
689 /* unforce divstr regardless whether i2c enumeration was done or not */
690 dib7000p_write_word(state, 1285, dib7000p_read_word(state, 1285) & ~(1 << 1));
691
692 dib7000p_set_bandwidth(state, 8000);
693
694 if (state->version == SOC7090) {
695 dib7000p_write_word(state, 36, 0x0755);/* P_iqc_impnc_on =1 & P_iqc_corr_inh = 1 for impulsive noise */
696 } else {
697 if (state->cfg.tuner_is_baseband)
698 dib7000p_write_word(state, 36, 0x0755);
699 else
700 dib7000p_write_word(state, 36, 0x1f55);
701 }
702
703 dib7000p_write_tab(state, dib7000p_defaults);
704 if (state->version != SOC7090) {
705 dib7000p_write_word(state, 901, 0x0006);
706 dib7000p_write_word(state, 902, (3 << 10) | (1 << 6));
707 dib7000p_write_word(state, 905, 0x2c8e);
708 }
709
710 dib7000p_set_power_mode(state, DIB7000P_POWER_INTERFACE_ONLY);
711
712 return 0;
713 }
714
dib7000p_pll_clk_cfg(struct dib7000p_state * state)715 static void dib7000p_pll_clk_cfg(struct dib7000p_state *state)
716 {
717 u16 tmp = 0;
718 tmp = dib7000p_read_word(state, 903);
719 dib7000p_write_word(state, 903, (tmp | 0x1));
720 tmp = dib7000p_read_word(state, 900);
721 dib7000p_write_word(state, 900, (tmp & 0x7fff) | (1 << 6));
722 }
723
dib7000p_restart_agc(struct dib7000p_state * state)724 static void dib7000p_restart_agc(struct dib7000p_state *state)
725 {
726 // P_restart_iqc & P_restart_agc
727 dib7000p_write_word(state, 770, (1 << 11) | (1 << 9));
728 dib7000p_write_word(state, 770, 0x0000);
729 }
730
dib7000p_update_lna(struct dib7000p_state * state)731 static int dib7000p_update_lna(struct dib7000p_state *state)
732 {
733 u16 dyn_gain;
734
735 if (state->cfg.update_lna) {
736 dyn_gain = dib7000p_read_word(state, 394);
737 if (state->cfg.update_lna(&state->demod, dyn_gain)) {
738 dib7000p_restart_agc(state);
739 return 1;
740 }
741 }
742
743 return 0;
744 }
745
dib7000p_set_agc_config(struct dib7000p_state * state,u8 band)746 static int dib7000p_set_agc_config(struct dib7000p_state *state, u8 band)
747 {
748 struct dibx000_agc_config *agc = NULL;
749 int i;
750 if (state->current_band == band && state->current_agc != NULL)
751 return 0;
752 state->current_band = band;
753
754 for (i = 0; i < state->cfg.agc_config_count; i++)
755 if (state->cfg.agc[i].band_caps & band) {
756 agc = &state->cfg.agc[i];
757 break;
758 }
759
760 if (agc == NULL) {
761 dprintk("no valid AGC configuration found for band 0x%02x\n", band);
762 return -EINVAL;
763 }
764
765 state->current_agc = agc;
766
767 /* AGC */
768 dib7000p_write_word(state, 75, agc->setup);
769 dib7000p_write_word(state, 76, agc->inv_gain);
770 dib7000p_write_word(state, 77, agc->time_stabiliz);
771 dib7000p_write_word(state, 100, (agc->alpha_level << 12) | agc->thlock);
772
773 // Demod AGC loop configuration
774 dib7000p_write_word(state, 101, (agc->alpha_mant << 5) | agc->alpha_exp);
775 dib7000p_write_word(state, 102, (agc->beta_mant << 6) | agc->beta_exp);
776
777 /* AGC continued */
778 dprintk("WBD: ref: %d, sel: %d, active: %d, alpha: %d\n",
779 state->wbd_ref != 0 ? state->wbd_ref : agc->wbd_ref, agc->wbd_sel, !agc->perform_agc_softsplit, agc->wbd_sel);
780
781 if (state->wbd_ref != 0)
782 dib7000p_write_word(state, 105, (agc->wbd_inv << 12) | state->wbd_ref);
783 else
784 dib7000p_write_word(state, 105, (agc->wbd_inv << 12) | agc->wbd_ref);
785
786 dib7000p_write_word(state, 106, (agc->wbd_sel << 13) | (agc->wbd_alpha << 9) | (agc->perform_agc_softsplit << 8));
787
788 dib7000p_write_word(state, 107, agc->agc1_max);
789 dib7000p_write_word(state, 108, agc->agc1_min);
790 dib7000p_write_word(state, 109, agc->agc2_max);
791 dib7000p_write_word(state, 110, agc->agc2_min);
792 dib7000p_write_word(state, 111, (agc->agc1_pt1 << 8) | agc->agc1_pt2);
793 dib7000p_write_word(state, 112, agc->agc1_pt3);
794 dib7000p_write_word(state, 113, (agc->agc1_slope1 << 8) | agc->agc1_slope2);
795 dib7000p_write_word(state, 114, (agc->agc2_pt1 << 8) | agc->agc2_pt2);
796 dib7000p_write_word(state, 115, (agc->agc2_slope1 << 8) | agc->agc2_slope2);
797 return 0;
798 }
799
dib7000p_set_dds(struct dib7000p_state * state,s32 offset_khz)800 static int dib7000p_set_dds(struct dib7000p_state *state, s32 offset_khz)
801 {
802 u32 internal = dib7000p_get_internal_freq(state);
803 s32 unit_khz_dds_val;
804 u32 abs_offset_khz = abs(offset_khz);
805 u32 dds = state->cfg.bw->ifreq & 0x1ffffff;
806 u8 invert = !!(state->cfg.bw->ifreq & (1 << 25));
807 if (internal == 0) {
808 pr_warn("DIB7000P: dib7000p_get_internal_freq returned 0\n");
809 return -1;
810 }
811 /* 2**26 / Fsampling is the unit 1KHz offset */
812 unit_khz_dds_val = 67108864 / (internal);
813
814 dprintk("setting a frequency offset of %dkHz internal freq = %d invert = %d\n", offset_khz, internal, invert);
815
816 if (offset_khz < 0)
817 unit_khz_dds_val *= -1;
818
819 /* IF tuner */
820 if (invert)
821 dds -= (abs_offset_khz * unit_khz_dds_val); /* /100 because of /100 on the unit_khz_dds_val line calc for better accuracy */
822 else
823 dds += (abs_offset_khz * unit_khz_dds_val);
824
825 if (abs_offset_khz <= (internal / 2)) { /* Max dds offset is the half of the demod freq */
826 dib7000p_write_word(state, 21, (u16) (((dds >> 16) & 0x1ff) | (0 << 10) | (invert << 9)));
827 dib7000p_write_word(state, 22, (u16) (dds & 0xffff));
828 }
829 return 0;
830 }
831
dib7000p_agc_startup(struct dvb_frontend * demod)832 static int dib7000p_agc_startup(struct dvb_frontend *demod)
833 {
834 struct dtv_frontend_properties *ch = &demod->dtv_property_cache;
835 struct dib7000p_state *state = demod->demodulator_priv;
836 int ret = -1;
837 u8 *agc_state = &state->agc_state;
838 u8 agc_split;
839 u16 reg;
840 u32 upd_demod_gain_period = 0x1000;
841 s32 frequency_offset = 0;
842
843 switch (state->agc_state) {
844 case 0:
845 dib7000p_set_power_mode(state, DIB7000P_POWER_ALL);
846 if (state->version == SOC7090) {
847 reg = dib7000p_read_word(state, 0x79b) & 0xff00;
848 dib7000p_write_word(state, 0x79a, upd_demod_gain_period & 0xFFFF); /* lsb */
849 dib7000p_write_word(state, 0x79b, reg | (1 << 14) | ((upd_demod_gain_period >> 16) & 0xFF));
850
851 /* enable adc i & q */
852 reg = dib7000p_read_word(state, 0x780);
853 dib7000p_write_word(state, 0x780, (reg | (0x3)) & (~(1 << 7)));
854 } else {
855 dib7000p_set_adc_state(state, DIBX000_ADC_ON);
856 dib7000p_pll_clk_cfg(state);
857 }
858
859 if (dib7000p_set_agc_config(state, BAND_OF_FREQUENCY(ch->frequency / 1000)) != 0)
860 return -1;
861
862 if (demod->ops.tuner_ops.get_frequency) {
863 u32 frequency_tuner;
864
865 demod->ops.tuner_ops.get_frequency(demod, &frequency_tuner);
866 frequency_offset = (s32)frequency_tuner / 1000 - ch->frequency / 1000;
867 }
868
869 if (dib7000p_set_dds(state, frequency_offset) < 0)
870 return -1;
871
872 ret = 7;
873 (*agc_state)++;
874 break;
875
876 case 1:
877 if (state->cfg.agc_control)
878 state->cfg.agc_control(&state->demod, 1);
879
880 dib7000p_write_word(state, 78, 32768);
881 if (!state->current_agc->perform_agc_softsplit) {
882 /* we are using the wbd - so slow AGC startup */
883 /* force 0 split on WBD and restart AGC */
884 dib7000p_write_word(state, 106, (state->current_agc->wbd_sel << 13) | (state->current_agc->wbd_alpha << 9) | (1 << 8));
885 (*agc_state)++;
886 ret = 5;
887 } else {
888 /* default AGC startup */
889 (*agc_state) = 4;
890 /* wait AGC rough lock time */
891 ret = 7;
892 }
893
894 dib7000p_restart_agc(state);
895 break;
896
897 case 2: /* fast split search path after 5sec */
898 dib7000p_write_word(state, 75, state->current_agc->setup | (1 << 4)); /* freeze AGC loop */
899 dib7000p_write_word(state, 106, (state->current_agc->wbd_sel << 13) | (2 << 9) | (0 << 8)); /* fast split search 0.25kHz */
900 (*agc_state)++;
901 ret = 14;
902 break;
903
904 case 3: /* split search ended */
905 agc_split = (u8) dib7000p_read_word(state, 396); /* store the split value for the next time */
906 dib7000p_write_word(state, 78, dib7000p_read_word(state, 394)); /* set AGC gain start value */
907
908 dib7000p_write_word(state, 75, state->current_agc->setup); /* std AGC loop */
909 dib7000p_write_word(state, 106, (state->current_agc->wbd_sel << 13) | (state->current_agc->wbd_alpha << 9) | agc_split); /* standard split search */
910
911 dib7000p_restart_agc(state);
912
913 dprintk("SPLIT %p: %u\n", demod, agc_split);
914
915 (*agc_state)++;
916 ret = 5;
917 break;
918
919 case 4: /* LNA startup */
920 ret = 7;
921
922 if (dib7000p_update_lna(state))
923 ret = 5;
924 else
925 (*agc_state)++;
926 break;
927
928 case 5:
929 if (state->cfg.agc_control)
930 state->cfg.agc_control(&state->demod, 0);
931 (*agc_state)++;
932 break;
933 default:
934 break;
935 }
936 return ret;
937 }
938
dib7000p_update_timf(struct dib7000p_state * state)939 static void dib7000p_update_timf(struct dib7000p_state *state)
940 {
941 u32 timf = (dib7000p_read_word(state, 427) << 16) | dib7000p_read_word(state, 428);
942 state->timf = timf * 160 / (state->current_bandwidth / 50);
943 dib7000p_write_word(state, 23, (u16) (timf >> 16));
944 dib7000p_write_word(state, 24, (u16) (timf & 0xffff));
945 dprintk("updated timf_frequency: %d (default: %d)\n", state->timf, state->cfg.bw->timf);
946
947 }
948
dib7000p_ctrl_timf(struct dvb_frontend * fe,u8 op,u32 timf)949 static u32 dib7000p_ctrl_timf(struct dvb_frontend *fe, u8 op, u32 timf)
950 {
951 struct dib7000p_state *state = fe->demodulator_priv;
952 switch (op) {
953 case DEMOD_TIMF_SET:
954 state->timf = timf;
955 break;
956 case DEMOD_TIMF_UPDATE:
957 dib7000p_update_timf(state);
958 break;
959 case DEMOD_TIMF_GET:
960 break;
961 }
962 dib7000p_set_bandwidth(state, state->current_bandwidth);
963 return state->timf;
964 }
965
dib7000p_set_channel(struct dib7000p_state * state,struct dtv_frontend_properties * ch,u8 seq)966 static void dib7000p_set_channel(struct dib7000p_state *state,
967 struct dtv_frontend_properties *ch, u8 seq)
968 {
969 u16 value, est[4];
970
971 dib7000p_set_bandwidth(state, BANDWIDTH_TO_KHZ(ch->bandwidth_hz));
972
973 /* nfft, guard, qam, alpha */
974 value = 0;
975 switch (ch->transmission_mode) {
976 case TRANSMISSION_MODE_2K:
977 value |= (0 << 7);
978 break;
979 case TRANSMISSION_MODE_4K:
980 value |= (2 << 7);
981 break;
982 default:
983 case TRANSMISSION_MODE_8K:
984 value |= (1 << 7);
985 break;
986 }
987 switch (ch->guard_interval) {
988 case GUARD_INTERVAL_1_32:
989 value |= (0 << 5);
990 break;
991 case GUARD_INTERVAL_1_16:
992 value |= (1 << 5);
993 break;
994 case GUARD_INTERVAL_1_4:
995 value |= (3 << 5);
996 break;
997 default:
998 case GUARD_INTERVAL_1_8:
999 value |= (2 << 5);
1000 break;
1001 }
1002 switch (ch->modulation) {
1003 case QPSK:
1004 value |= (0 << 3);
1005 break;
1006 case QAM_16:
1007 value |= (1 << 3);
1008 break;
1009 default:
1010 case QAM_64:
1011 value |= (2 << 3);
1012 break;
1013 }
1014 switch (HIERARCHY_1) {
1015 case HIERARCHY_2:
1016 value |= 2;
1017 break;
1018 case HIERARCHY_4:
1019 value |= 4;
1020 break;
1021 default:
1022 case HIERARCHY_1:
1023 value |= 1;
1024 break;
1025 }
1026 dib7000p_write_word(state, 0, value);
1027 dib7000p_write_word(state, 5, (seq << 4) | 1); /* do not force tps, search list 0 */
1028
1029 /* P_dintl_native, P_dintlv_inv, P_hrch, P_code_rate, P_select_hp */
1030 value = 0;
1031 if (1 != 0)
1032 value |= (1 << 6);
1033 if (ch->hierarchy == 1)
1034 value |= (1 << 4);
1035 if (1 == 1)
1036 value |= 1;
1037 switch ((ch->hierarchy == 0 || 1 == 1) ? ch->code_rate_HP : ch->code_rate_LP) {
1038 case FEC_2_3:
1039 value |= (2 << 1);
1040 break;
1041 case FEC_3_4:
1042 value |= (3 << 1);
1043 break;
1044 case FEC_5_6:
1045 value |= (5 << 1);
1046 break;
1047 case FEC_7_8:
1048 value |= (7 << 1);
1049 break;
1050 default:
1051 case FEC_1_2:
1052 value |= (1 << 1);
1053 break;
1054 }
1055 dib7000p_write_word(state, 208, value);
1056
1057 /* offset loop parameters */
1058 dib7000p_write_word(state, 26, 0x6680);
1059 dib7000p_write_word(state, 32, 0x0003);
1060 dib7000p_write_word(state, 29, 0x1273);
1061 dib7000p_write_word(state, 33, 0x0005);
1062
1063 /* P_dvsy_sync_wait */
1064 switch (ch->transmission_mode) {
1065 case TRANSMISSION_MODE_8K:
1066 value = 256;
1067 break;
1068 case TRANSMISSION_MODE_4K:
1069 value = 128;
1070 break;
1071 case TRANSMISSION_MODE_2K:
1072 default:
1073 value = 64;
1074 break;
1075 }
1076 switch (ch->guard_interval) {
1077 case GUARD_INTERVAL_1_16:
1078 value *= 2;
1079 break;
1080 case GUARD_INTERVAL_1_8:
1081 value *= 4;
1082 break;
1083 case GUARD_INTERVAL_1_4:
1084 value *= 8;
1085 break;
1086 default:
1087 case GUARD_INTERVAL_1_32:
1088 value *= 1;
1089 break;
1090 }
1091 if (state->cfg.diversity_delay == 0)
1092 state->div_sync_wait = (value * 3) / 2 + 48;
1093 else
1094 state->div_sync_wait = (value * 3) / 2 + state->cfg.diversity_delay;
1095
1096 /* deactivate the possibility of diversity reception if extended interleaver */
1097 state->div_force_off = !1 && ch->transmission_mode != TRANSMISSION_MODE_8K;
1098 dib7000p_set_diversity_in(&state->demod, state->div_state);
1099
1100 /* channel estimation fine configuration */
1101 switch (ch->modulation) {
1102 case QAM_64:
1103 est[0] = 0x0148; /* P_adp_regul_cnt 0.04 */
1104 est[1] = 0xfff0; /* P_adp_noise_cnt -0.002 */
1105 est[2] = 0x00a4; /* P_adp_regul_ext 0.02 */
1106 est[3] = 0xfff8; /* P_adp_noise_ext -0.001 */
1107 break;
1108 case QAM_16:
1109 est[0] = 0x023d; /* P_adp_regul_cnt 0.07 */
1110 est[1] = 0xffdf; /* P_adp_noise_cnt -0.004 */
1111 est[2] = 0x00a4; /* P_adp_regul_ext 0.02 */
1112 est[3] = 0xfff0; /* P_adp_noise_ext -0.002 */
1113 break;
1114 default:
1115 est[0] = 0x099a; /* P_adp_regul_cnt 0.3 */
1116 est[1] = 0xffae; /* P_adp_noise_cnt -0.01 */
1117 est[2] = 0x0333; /* P_adp_regul_ext 0.1 */
1118 est[3] = 0xfff8; /* P_adp_noise_ext -0.002 */
1119 break;
1120 }
1121 for (value = 0; value < 4; value++)
1122 dib7000p_write_word(state, 187 + value, est[value]);
1123 }
1124
dib7000p_autosearch_start(struct dvb_frontend * demod)1125 static int dib7000p_autosearch_start(struct dvb_frontend *demod)
1126 {
1127 struct dtv_frontend_properties *ch = &demod->dtv_property_cache;
1128 struct dib7000p_state *state = demod->demodulator_priv;
1129 struct dtv_frontend_properties schan;
1130 u32 value, factor;
1131 u32 internal = dib7000p_get_internal_freq(state);
1132
1133 schan = *ch;
1134 schan.modulation = QAM_64;
1135 schan.guard_interval = GUARD_INTERVAL_1_32;
1136 schan.transmission_mode = TRANSMISSION_MODE_8K;
1137 schan.code_rate_HP = FEC_2_3;
1138 schan.code_rate_LP = FEC_3_4;
1139 schan.hierarchy = 0;
1140
1141 dib7000p_set_channel(state, &schan, 7);
1142
1143 factor = BANDWIDTH_TO_KHZ(ch->bandwidth_hz);
1144 if (factor >= 5000) {
1145 if (state->version == SOC7090)
1146 factor = 2;
1147 else
1148 factor = 1;
1149 } else
1150 factor = 6;
1151
1152 value = 30 * internal * factor;
1153 dib7000p_write_word(state, 6, (u16) ((value >> 16) & 0xffff));
1154 dib7000p_write_word(state, 7, (u16) (value & 0xffff));
1155 value = 100 * internal * factor;
1156 dib7000p_write_word(state, 8, (u16) ((value >> 16) & 0xffff));
1157 dib7000p_write_word(state, 9, (u16) (value & 0xffff));
1158 value = 500 * internal * factor;
1159 dib7000p_write_word(state, 10, (u16) ((value >> 16) & 0xffff));
1160 dib7000p_write_word(state, 11, (u16) (value & 0xffff));
1161
1162 value = dib7000p_read_word(state, 0);
1163 dib7000p_write_word(state, 0, (u16) ((1 << 9) | value));
1164 dib7000p_read_word(state, 1284);
1165 dib7000p_write_word(state, 0, (u16) value);
1166
1167 return 0;
1168 }
1169
dib7000p_autosearch_is_irq(struct dvb_frontend * demod)1170 static int dib7000p_autosearch_is_irq(struct dvb_frontend *demod)
1171 {
1172 struct dib7000p_state *state = demod->demodulator_priv;
1173 u16 irq_pending = dib7000p_read_word(state, 1284);
1174
1175 if (irq_pending & 0x1)
1176 return 1;
1177
1178 if (irq_pending & 0x2)
1179 return 2;
1180
1181 return 0;
1182 }
1183
dib7000p_spur_protect(struct dib7000p_state * state,u32 rf_khz,u32 bw)1184 static void dib7000p_spur_protect(struct dib7000p_state *state, u32 rf_khz, u32 bw)
1185 {
1186 static const s16 notch[] = { 16143, 14402, 12238, 9713, 6902, 3888, 759, -2392 };
1187 static const u8 sine[] = { 0, 2, 3, 5, 6, 8, 9, 11, 13, 14, 16, 17, 19, 20, 22,
1188 24, 25, 27, 28, 30, 31, 33, 34, 36, 38, 39, 41, 42, 44, 45, 47, 48, 50, 51,
1189 53, 55, 56, 58, 59, 61, 62, 64, 65, 67, 68, 70, 71, 73, 74, 76, 77, 79, 80,
1190 82, 83, 85, 86, 88, 89, 91, 92, 94, 95, 97, 98, 99, 101, 102, 104, 105,
1191 107, 108, 109, 111, 112, 114, 115, 117, 118, 119, 121, 122, 123, 125, 126,
1192 128, 129, 130, 132, 133, 134, 136, 137, 138, 140, 141, 142, 144, 145, 146,
1193 147, 149, 150, 151, 152, 154, 155, 156, 157, 159, 160, 161, 162, 164, 165,
1194 166, 167, 168, 170, 171, 172, 173, 174, 175, 177, 178, 179, 180, 181, 182,
1195 183, 184, 185, 186, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198,
1196 199, 200, 201, 202, 203, 204, 205, 206, 207, 207, 208, 209, 210, 211, 212,
1197 213, 214, 215, 215, 216, 217, 218, 219, 220, 220, 221, 222, 223, 224, 224,
1198 225, 226, 227, 227, 228, 229, 229, 230, 231, 231, 232, 233, 233, 234, 235,
1199 235, 236, 237, 237, 238, 238, 239, 239, 240, 241, 241, 242, 242, 243, 243,
1200 244, 244, 245, 245, 245, 246, 246, 247, 247, 248, 248, 248, 249, 249, 249,
1201 250, 250, 250, 251, 251, 251, 252, 252, 252, 252, 253, 253, 253, 253, 254,
1202 254, 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
1203 255, 255, 255, 255, 255, 255
1204 };
1205
1206 u32 xtal = state->cfg.bw->xtal_hz / 1000;
1207 int f_rel = DIV_ROUND_CLOSEST(rf_khz, xtal) * xtal - rf_khz;
1208 int k;
1209 int coef_re[8], coef_im[8];
1210 int bw_khz = bw;
1211 u32 pha;
1212
1213 dprintk("relative position of the Spur: %dk (RF: %dk, XTAL: %dk)\n", f_rel, rf_khz, xtal);
1214
1215 if (f_rel < -bw_khz / 2 || f_rel > bw_khz / 2)
1216 return;
1217
1218 bw_khz /= 100;
1219
1220 dib7000p_write_word(state, 142, 0x0610);
1221
1222 for (k = 0; k < 8; k++) {
1223 pha = ((f_rel * (k + 1) * 112 * 80 / bw_khz) / 1000) & 0x3ff;
1224
1225 if (pha == 0) {
1226 coef_re[k] = 256;
1227 coef_im[k] = 0;
1228 } else if (pha < 256) {
1229 coef_re[k] = sine[256 - (pha & 0xff)];
1230 coef_im[k] = sine[pha & 0xff];
1231 } else if (pha == 256) {
1232 coef_re[k] = 0;
1233 coef_im[k] = 256;
1234 } else if (pha < 512) {
1235 coef_re[k] = -sine[pha & 0xff];
1236 coef_im[k] = sine[256 - (pha & 0xff)];
1237 } else if (pha == 512) {
1238 coef_re[k] = -256;
1239 coef_im[k] = 0;
1240 } else if (pha < 768) {
1241 coef_re[k] = -sine[256 - (pha & 0xff)];
1242 coef_im[k] = -sine[pha & 0xff];
1243 } else if (pha == 768) {
1244 coef_re[k] = 0;
1245 coef_im[k] = -256;
1246 } else {
1247 coef_re[k] = sine[pha & 0xff];
1248 coef_im[k] = -sine[256 - (pha & 0xff)];
1249 }
1250
1251 coef_re[k] *= notch[k];
1252 coef_re[k] += (1 << 14);
1253 if (coef_re[k] >= (1 << 24))
1254 coef_re[k] = (1 << 24) - 1;
1255 coef_re[k] /= (1 << 15);
1256
1257 coef_im[k] *= notch[k];
1258 coef_im[k] += (1 << 14);
1259 if (coef_im[k] >= (1 << 24))
1260 coef_im[k] = (1 << 24) - 1;
1261 coef_im[k] /= (1 << 15);
1262
1263 dprintk("PALF COEF: %d re: %d im: %d\n", k, coef_re[k], coef_im[k]);
1264
1265 dib7000p_write_word(state, 143, (0 << 14) | (k << 10) | (coef_re[k] & 0x3ff));
1266 dib7000p_write_word(state, 144, coef_im[k] & 0x3ff);
1267 dib7000p_write_word(state, 143, (1 << 14) | (k << 10) | (coef_re[k] & 0x3ff));
1268 }
1269 dib7000p_write_word(state, 143, 0);
1270 }
1271
dib7000p_tune(struct dvb_frontend * demod)1272 static int dib7000p_tune(struct dvb_frontend *demod)
1273 {
1274 struct dtv_frontend_properties *ch = &demod->dtv_property_cache;
1275 struct dib7000p_state *state = demod->demodulator_priv;
1276 u16 tmp = 0;
1277
1278 if (ch != NULL)
1279 dib7000p_set_channel(state, ch, 0);
1280 else
1281 return -EINVAL;
1282
1283 // restart demod
1284 dib7000p_write_word(state, 770, 0x4000);
1285 dib7000p_write_word(state, 770, 0x0000);
1286 msleep(45);
1287
1288 /* P_ctrl_inh_cor=0, P_ctrl_alpha_cor=4, P_ctrl_inh_isi=0, P_ctrl_alpha_isi=3, P_ctrl_inh_cor4=1, P_ctrl_alpha_cor4=3 */
1289 tmp = (0 << 14) | (4 << 10) | (0 << 9) | (3 << 5) | (1 << 4) | (0x3);
1290 if (state->sfn_workaround_active) {
1291 dprintk("SFN workaround is active\n");
1292 tmp |= (1 << 9);
1293 dib7000p_write_word(state, 166, 0x4000);
1294 } else {
1295 dib7000p_write_word(state, 166, 0x0000);
1296 }
1297 dib7000p_write_word(state, 29, tmp);
1298
1299 // never achieved a lock with that bandwidth so far - wait for osc-freq to update
1300 if (state->timf == 0)
1301 msleep(200);
1302
1303 /* offset loop parameters */
1304
1305 /* P_timf_alpha, P_corm_alpha=6, P_corm_thres=0x80 */
1306 tmp = (6 << 8) | 0x80;
1307 switch (ch->transmission_mode) {
1308 case TRANSMISSION_MODE_2K:
1309 tmp |= (2 << 12);
1310 break;
1311 case TRANSMISSION_MODE_4K:
1312 tmp |= (3 << 12);
1313 break;
1314 default:
1315 case TRANSMISSION_MODE_8K:
1316 tmp |= (4 << 12);
1317 break;
1318 }
1319 dib7000p_write_word(state, 26, tmp); /* timf_a(6xxx) */
1320
1321 /* P_ctrl_freeze_pha_shift=0, P_ctrl_pha_off_max */
1322 tmp = (0 << 4);
1323 switch (ch->transmission_mode) {
1324 case TRANSMISSION_MODE_2K:
1325 tmp |= 0x6;
1326 break;
1327 case TRANSMISSION_MODE_4K:
1328 tmp |= 0x7;
1329 break;
1330 default:
1331 case TRANSMISSION_MODE_8K:
1332 tmp |= 0x8;
1333 break;
1334 }
1335 dib7000p_write_word(state, 32, tmp);
1336
1337 /* P_ctrl_sfreq_inh=0, P_ctrl_sfreq_step */
1338 tmp = (0 << 4);
1339 switch (ch->transmission_mode) {
1340 case TRANSMISSION_MODE_2K:
1341 tmp |= 0x6;
1342 break;
1343 case TRANSMISSION_MODE_4K:
1344 tmp |= 0x7;
1345 break;
1346 default:
1347 case TRANSMISSION_MODE_8K:
1348 tmp |= 0x8;
1349 break;
1350 }
1351 dib7000p_write_word(state, 33, tmp);
1352
1353 tmp = dib7000p_read_word(state, 509);
1354 if (!((tmp >> 6) & 0x1)) {
1355 /* restart the fec */
1356 tmp = dib7000p_read_word(state, 771);
1357 dib7000p_write_word(state, 771, tmp | (1 << 1));
1358 dib7000p_write_word(state, 771, tmp);
1359 msleep(40);
1360 tmp = dib7000p_read_word(state, 509);
1361 }
1362 // we achieved a lock - it's time to update the osc freq
1363 if ((tmp >> 6) & 0x1) {
1364 dib7000p_update_timf(state);
1365 /* P_timf_alpha += 2 */
1366 tmp = dib7000p_read_word(state, 26);
1367 dib7000p_write_word(state, 26, (tmp & ~(0xf << 12)) | ((((tmp >> 12) & 0xf) + 5) << 12));
1368 }
1369
1370 if (state->cfg.spur_protect)
1371 dib7000p_spur_protect(state, ch->frequency / 1000, BANDWIDTH_TO_KHZ(ch->bandwidth_hz));
1372
1373 dib7000p_set_bandwidth(state, BANDWIDTH_TO_KHZ(ch->bandwidth_hz));
1374
1375 dib7000p_reset_stats(demod);
1376
1377 return 0;
1378 }
1379
dib7000p_wakeup(struct dvb_frontend * demod)1380 static int dib7000p_wakeup(struct dvb_frontend *demod)
1381 {
1382 struct dib7000p_state *state = demod->demodulator_priv;
1383 dib7000p_set_power_mode(state, DIB7000P_POWER_ALL);
1384 dib7000p_set_adc_state(state, DIBX000_SLOW_ADC_ON);
1385 if (state->version == SOC7090)
1386 dib7000p_sad_calib(state);
1387 return 0;
1388 }
1389
dib7000p_sleep(struct dvb_frontend * demod)1390 static int dib7000p_sleep(struct dvb_frontend *demod)
1391 {
1392 struct dib7000p_state *state = demod->demodulator_priv;
1393 if (state->version == SOC7090)
1394 return dib7000p_set_power_mode(state, DIB7000P_POWER_INTERFACE_ONLY);
1395 return dib7000p_set_output_mode(state, OUTMODE_HIGH_Z) | dib7000p_set_power_mode(state, DIB7000P_POWER_INTERFACE_ONLY);
1396 }
1397
dib7000p_identify(struct dib7000p_state * st)1398 static int dib7000p_identify(struct dib7000p_state *st)
1399 {
1400 u16 value;
1401 dprintk("checking demod on I2C address: %d (%x)\n", st->i2c_addr, st->i2c_addr);
1402
1403 if ((value = dib7000p_read_word(st, 768)) != 0x01b3) {
1404 dprintk("wrong Vendor ID (read=0x%x)\n", value);
1405 return -EREMOTEIO;
1406 }
1407
1408 if ((value = dib7000p_read_word(st, 769)) != 0x4000) {
1409 dprintk("wrong Device ID (%x)\n", value);
1410 return -EREMOTEIO;
1411 }
1412
1413 return 0;
1414 }
1415
dib7000p_get_frontend(struct dvb_frontend * fe,struct dtv_frontend_properties * fep)1416 static int dib7000p_get_frontend(struct dvb_frontend *fe,
1417 struct dtv_frontend_properties *fep)
1418 {
1419 struct dib7000p_state *state = fe->demodulator_priv;
1420 u16 tps = dib7000p_read_word(state, 463);
1421
1422 fep->inversion = INVERSION_AUTO;
1423
1424 fep->bandwidth_hz = BANDWIDTH_TO_HZ(state->current_bandwidth);
1425
1426 switch ((tps >> 8) & 0x3) {
1427 case 0:
1428 fep->transmission_mode = TRANSMISSION_MODE_2K;
1429 break;
1430 case 1:
1431 fep->transmission_mode = TRANSMISSION_MODE_8K;
1432 break;
1433 /* case 2: fep->transmission_mode = TRANSMISSION_MODE_4K; break; */
1434 }
1435
1436 switch (tps & 0x3) {
1437 case 0:
1438 fep->guard_interval = GUARD_INTERVAL_1_32;
1439 break;
1440 case 1:
1441 fep->guard_interval = GUARD_INTERVAL_1_16;
1442 break;
1443 case 2:
1444 fep->guard_interval = GUARD_INTERVAL_1_8;
1445 break;
1446 case 3:
1447 fep->guard_interval = GUARD_INTERVAL_1_4;
1448 break;
1449 }
1450
1451 switch ((tps >> 14) & 0x3) {
1452 case 0:
1453 fep->modulation = QPSK;
1454 break;
1455 case 1:
1456 fep->modulation = QAM_16;
1457 break;
1458 case 2:
1459 default:
1460 fep->modulation = QAM_64;
1461 break;
1462 }
1463
1464 /* as long as the frontend_param structure is fixed for hierarchical transmission I refuse to use it */
1465 /* (tps >> 13) & 0x1 == hrch is used, (tps >> 10) & 0x7 == alpha */
1466
1467 fep->hierarchy = HIERARCHY_NONE;
1468 switch ((tps >> 5) & 0x7) {
1469 case 1:
1470 fep->code_rate_HP = FEC_1_2;
1471 break;
1472 case 2:
1473 fep->code_rate_HP = FEC_2_3;
1474 break;
1475 case 3:
1476 fep->code_rate_HP = FEC_3_4;
1477 break;
1478 case 5:
1479 fep->code_rate_HP = FEC_5_6;
1480 break;
1481 case 7:
1482 default:
1483 fep->code_rate_HP = FEC_7_8;
1484 break;
1485
1486 }
1487
1488 switch ((tps >> 2) & 0x7) {
1489 case 1:
1490 fep->code_rate_LP = FEC_1_2;
1491 break;
1492 case 2:
1493 fep->code_rate_LP = FEC_2_3;
1494 break;
1495 case 3:
1496 fep->code_rate_LP = FEC_3_4;
1497 break;
1498 case 5:
1499 fep->code_rate_LP = FEC_5_6;
1500 break;
1501 case 7:
1502 default:
1503 fep->code_rate_LP = FEC_7_8;
1504 break;
1505 }
1506
1507 /* native interleaver: (dib7000p_read_word(state, 464) >> 5) & 0x1 */
1508
1509 return 0;
1510 }
1511
dib7000p_set_frontend(struct dvb_frontend * fe)1512 static int dib7000p_set_frontend(struct dvb_frontend *fe)
1513 {
1514 struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
1515 struct dib7000p_state *state = fe->demodulator_priv;
1516 int time, ret;
1517
1518 if (state->version == SOC7090)
1519 dib7090_set_diversity_in(fe, 0);
1520 else
1521 dib7000p_set_output_mode(state, OUTMODE_HIGH_Z);
1522
1523 /* maybe the parameter has been changed */
1524 state->sfn_workaround_active = buggy_sfn_workaround;
1525
1526 if (fe->ops.tuner_ops.set_params)
1527 fe->ops.tuner_ops.set_params(fe);
1528
1529 /* start up the AGC */
1530 state->agc_state = 0;
1531 do {
1532 time = dib7000p_agc_startup(fe);
1533 if (time != -1)
1534 msleep(time);
1535 } while (time != -1);
1536
1537 if (fep->transmission_mode == TRANSMISSION_MODE_AUTO ||
1538 fep->guard_interval == GUARD_INTERVAL_AUTO || fep->modulation == QAM_AUTO || fep->code_rate_HP == FEC_AUTO) {
1539 int i = 800, found;
1540
1541 dib7000p_autosearch_start(fe);
1542 do {
1543 msleep(1);
1544 found = dib7000p_autosearch_is_irq(fe);
1545 } while (found == 0 && i--);
1546
1547 dprintk("autosearch returns: %d\n", found);
1548 if (found == 0 || found == 1)
1549 return 0;
1550
1551 dib7000p_get_frontend(fe, fep);
1552 }
1553
1554 ret = dib7000p_tune(fe);
1555
1556 /* make this a config parameter */
1557 if (state->version == SOC7090) {
1558 dib7090_set_output_mode(fe, state->cfg.output_mode);
1559 if (state->cfg.enMpegOutput == 0) {
1560 dib7090_setDibTxMux(state, MPEG_ON_DIBTX);
1561 dib7090_setHostBusMux(state, DIBTX_ON_HOSTBUS);
1562 }
1563 } else
1564 dib7000p_set_output_mode(state, state->cfg.output_mode);
1565
1566 return ret;
1567 }
1568
1569 static int dib7000p_get_stats(struct dvb_frontend *fe, enum fe_status stat);
1570
dib7000p_read_status(struct dvb_frontend * fe,enum fe_status * stat)1571 static int dib7000p_read_status(struct dvb_frontend *fe, enum fe_status *stat)
1572 {
1573 struct dib7000p_state *state = fe->demodulator_priv;
1574 u16 lock = dib7000p_read_word(state, 509);
1575
1576 *stat = 0;
1577
1578 if (lock & 0x8000)
1579 *stat |= FE_HAS_SIGNAL;
1580 if (lock & 0x3000)
1581 *stat |= FE_HAS_CARRIER;
1582 if (lock & 0x0100)
1583 *stat |= FE_HAS_VITERBI;
1584 if (lock & 0x0010)
1585 *stat |= FE_HAS_SYNC;
1586 if ((lock & 0x0038) == 0x38)
1587 *stat |= FE_HAS_LOCK;
1588
1589 dib7000p_get_stats(fe, *stat);
1590
1591 return 0;
1592 }
1593
dib7000p_read_ber(struct dvb_frontend * fe,u32 * ber)1594 static int dib7000p_read_ber(struct dvb_frontend *fe, u32 * ber)
1595 {
1596 struct dib7000p_state *state = fe->demodulator_priv;
1597 *ber = (dib7000p_read_word(state, 500) << 16) | dib7000p_read_word(state, 501);
1598 return 0;
1599 }
1600
dib7000p_read_unc_blocks(struct dvb_frontend * fe,u32 * unc)1601 static int dib7000p_read_unc_blocks(struct dvb_frontend *fe, u32 * unc)
1602 {
1603 struct dib7000p_state *state = fe->demodulator_priv;
1604 *unc = dib7000p_read_word(state, 506);
1605 return 0;
1606 }
1607
dib7000p_read_signal_strength(struct dvb_frontend * fe,u16 * strength)1608 static int dib7000p_read_signal_strength(struct dvb_frontend *fe, u16 * strength)
1609 {
1610 struct dib7000p_state *state = fe->demodulator_priv;
1611 u16 val = dib7000p_read_word(state, 394);
1612 *strength = 65535 - val;
1613 return 0;
1614 }
1615
dib7000p_get_snr(struct dvb_frontend * fe)1616 static u32 dib7000p_get_snr(struct dvb_frontend *fe)
1617 {
1618 struct dib7000p_state *state = fe->demodulator_priv;
1619 u16 val;
1620 s32 signal_mant, signal_exp, noise_mant, noise_exp;
1621 u32 result = 0;
1622
1623 val = dib7000p_read_word(state, 479);
1624 noise_mant = (val >> 4) & 0xff;
1625 noise_exp = ((val & 0xf) << 2);
1626 val = dib7000p_read_word(state, 480);
1627 noise_exp += ((val >> 14) & 0x3);
1628 if ((noise_exp & 0x20) != 0)
1629 noise_exp -= 0x40;
1630
1631 signal_mant = (val >> 6) & 0xFF;
1632 signal_exp = (val & 0x3F);
1633 if ((signal_exp & 0x20) != 0)
1634 signal_exp -= 0x40;
1635
1636 if (signal_mant != 0)
1637 result = intlog10(2) * 10 * signal_exp + 10 * intlog10(signal_mant);
1638 else
1639 result = intlog10(2) * 10 * signal_exp - 100;
1640
1641 if (noise_mant != 0)
1642 result -= intlog10(2) * 10 * noise_exp + 10 * intlog10(noise_mant);
1643 else
1644 result -= intlog10(2) * 10 * noise_exp - 100;
1645
1646 return result;
1647 }
1648
dib7000p_read_snr(struct dvb_frontend * fe,u16 * snr)1649 static int dib7000p_read_snr(struct dvb_frontend *fe, u16 *snr)
1650 {
1651 u32 result;
1652
1653 result = dib7000p_get_snr(fe);
1654
1655 *snr = result / ((1 << 24) / 10);
1656 return 0;
1657 }
1658
dib7000p_reset_stats(struct dvb_frontend * demod)1659 static void dib7000p_reset_stats(struct dvb_frontend *demod)
1660 {
1661 struct dib7000p_state *state = demod->demodulator_priv;
1662 struct dtv_frontend_properties *c = &demod->dtv_property_cache;
1663 u32 ucb;
1664
1665 memset(&c->strength, 0, sizeof(c->strength));
1666 memset(&c->cnr, 0, sizeof(c->cnr));
1667 memset(&c->post_bit_error, 0, sizeof(c->post_bit_error));
1668 memset(&c->post_bit_count, 0, sizeof(c->post_bit_count));
1669 memset(&c->block_error, 0, sizeof(c->block_error));
1670
1671 c->strength.len = 1;
1672 c->cnr.len = 1;
1673 c->block_error.len = 1;
1674 c->block_count.len = 1;
1675 c->post_bit_error.len = 1;
1676 c->post_bit_count.len = 1;
1677
1678 c->strength.stat[0].scale = FE_SCALE_DECIBEL;
1679 c->strength.stat[0].uvalue = 0;
1680
1681 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1682 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1683 c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1684 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1685 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1686
1687 dib7000p_read_unc_blocks(demod, &ucb);
1688
1689 state->old_ucb = ucb;
1690 state->ber_jiffies_stats = 0;
1691 state->per_jiffies_stats = 0;
1692 }
1693
1694 struct linear_segments {
1695 unsigned x;
1696 signed y;
1697 };
1698
1699 /*
1700 * Table to estimate signal strength in dBm.
1701 * This table should be empirically determinated by measuring the signal
1702 * strength generated by a RF generator directly connected into
1703 * a device.
1704 * This table was determinated by measuring the signal strength generated
1705 * by a DTA-2111 RF generator directly connected into a dib7000p device
1706 * (a Hauppauge Nova-TD stick), using a good quality 3 meters length
1707 * RC6 cable and good RC6 connectors, connected directly to antenna 1.
1708 * As the minimum output power of DTA-2111 is -31dBm, a 16 dBm attenuator
1709 * were used, for the lower power values.
1710 * The real value can actually be on other devices, or even at the
1711 * second antena input, depending on several factors, like if LNA
1712 * is enabled or not, if diversity is enabled, type of connectors, etc.
1713 * Yet, it is better to use this measure in dB than a random non-linear
1714 * percentage value, especially for antenna adjustments.
1715 * On my tests, the precision of the measure using this table is about
1716 * 0.5 dB, with sounds reasonable enough to adjust antennas.
1717 */
1718 #define DB_OFFSET 131000
1719
1720 static struct linear_segments strength_to_db_table[] = {
1721 { 63630, DB_OFFSET - 20500},
1722 { 62273, DB_OFFSET - 21000},
1723 { 60162, DB_OFFSET - 22000},
1724 { 58730, DB_OFFSET - 23000},
1725 { 58294, DB_OFFSET - 24000},
1726 { 57778, DB_OFFSET - 25000},
1727 { 57320, DB_OFFSET - 26000},
1728 { 56779, DB_OFFSET - 27000},
1729 { 56293, DB_OFFSET - 28000},
1730 { 55724, DB_OFFSET - 29000},
1731 { 55145, DB_OFFSET - 30000},
1732 { 54680, DB_OFFSET - 31000},
1733 { 54293, DB_OFFSET - 32000},
1734 { 53813, DB_OFFSET - 33000},
1735 { 53427, DB_OFFSET - 34000},
1736 { 52981, DB_OFFSET - 35000},
1737
1738 { 52636, DB_OFFSET - 36000},
1739 { 52014, DB_OFFSET - 37000},
1740 { 51674, DB_OFFSET - 38000},
1741 { 50692, DB_OFFSET - 39000},
1742 { 49824, DB_OFFSET - 40000},
1743 { 49052, DB_OFFSET - 41000},
1744 { 48436, DB_OFFSET - 42000},
1745 { 47836, DB_OFFSET - 43000},
1746 { 47368, DB_OFFSET - 44000},
1747 { 46468, DB_OFFSET - 45000},
1748 { 45597, DB_OFFSET - 46000},
1749 { 44586, DB_OFFSET - 47000},
1750 { 43667, DB_OFFSET - 48000},
1751 { 42673, DB_OFFSET - 49000},
1752 { 41816, DB_OFFSET - 50000},
1753 { 40876, DB_OFFSET - 51000},
1754 { 0, 0},
1755 };
1756
interpolate_value(u32 value,struct linear_segments * segments,unsigned len)1757 static u32 interpolate_value(u32 value, struct linear_segments *segments,
1758 unsigned len)
1759 {
1760 u64 tmp64;
1761 u32 dx;
1762 s32 dy;
1763 int i, ret;
1764
1765 if (value >= segments[0].x)
1766 return segments[0].y;
1767 if (value < segments[len-1].x)
1768 return segments[len-1].y;
1769
1770 for (i = 1; i < len - 1; i++) {
1771 /* If value is identical, no need to interpolate */
1772 if (value == segments[i].x)
1773 return segments[i].y;
1774 if (value > segments[i].x)
1775 break;
1776 }
1777
1778 /* Linear interpolation between the two (x,y) points */
1779 dy = segments[i - 1].y - segments[i].y;
1780 dx = segments[i - 1].x - segments[i].x;
1781
1782 tmp64 = value - segments[i].x;
1783 tmp64 *= dy;
1784 do_div(tmp64, dx);
1785 ret = segments[i].y + tmp64;
1786
1787 return ret;
1788 }
1789
1790 /* FIXME: may require changes - this one was borrowed from dib8000 */
dib7000p_get_time_us(struct dvb_frontend * demod)1791 static u32 dib7000p_get_time_us(struct dvb_frontend *demod)
1792 {
1793 struct dtv_frontend_properties *c = &demod->dtv_property_cache;
1794 u64 time_us, tmp64;
1795 u32 tmp, denom;
1796 int guard, rate_num, rate_denum = 1, bits_per_symbol;
1797 int interleaving = 0, fft_div;
1798
1799 switch (c->guard_interval) {
1800 case GUARD_INTERVAL_1_4:
1801 guard = 4;
1802 break;
1803 case GUARD_INTERVAL_1_8:
1804 guard = 8;
1805 break;
1806 case GUARD_INTERVAL_1_16:
1807 guard = 16;
1808 break;
1809 default:
1810 case GUARD_INTERVAL_1_32:
1811 guard = 32;
1812 break;
1813 }
1814
1815 switch (c->transmission_mode) {
1816 case TRANSMISSION_MODE_2K:
1817 fft_div = 4;
1818 break;
1819 case TRANSMISSION_MODE_4K:
1820 fft_div = 2;
1821 break;
1822 default:
1823 case TRANSMISSION_MODE_8K:
1824 fft_div = 1;
1825 break;
1826 }
1827
1828 switch (c->modulation) {
1829 case DQPSK:
1830 case QPSK:
1831 bits_per_symbol = 2;
1832 break;
1833 case QAM_16:
1834 bits_per_symbol = 4;
1835 break;
1836 default:
1837 case QAM_64:
1838 bits_per_symbol = 6;
1839 break;
1840 }
1841
1842 switch ((c->hierarchy == 0 || 1 == 1) ? c->code_rate_HP : c->code_rate_LP) {
1843 case FEC_1_2:
1844 rate_num = 1;
1845 rate_denum = 2;
1846 break;
1847 case FEC_2_3:
1848 rate_num = 2;
1849 rate_denum = 3;
1850 break;
1851 case FEC_3_4:
1852 rate_num = 3;
1853 rate_denum = 4;
1854 break;
1855 case FEC_5_6:
1856 rate_num = 5;
1857 rate_denum = 6;
1858 break;
1859 default:
1860 case FEC_7_8:
1861 rate_num = 7;
1862 rate_denum = 8;
1863 break;
1864 }
1865
1866 denom = bits_per_symbol * rate_num * fft_div * 384;
1867
1868 /*
1869 * FIXME: check if the math makes sense. If so, fill the
1870 * interleaving var.
1871 */
1872
1873 /* If calculus gets wrong, wait for 1s for the next stats */
1874 if (!denom)
1875 return 0;
1876
1877 /* Estimate the period for the total bit rate */
1878 time_us = rate_denum * (1008 * 1562500L);
1879 tmp64 = time_us;
1880 do_div(tmp64, guard);
1881 time_us = time_us + tmp64;
1882 time_us += denom / 2;
1883 do_div(time_us, denom);
1884
1885 tmp = 1008 * 96 * interleaving;
1886 time_us += tmp + tmp / guard;
1887
1888 return time_us;
1889 }
1890
dib7000p_get_stats(struct dvb_frontend * demod,enum fe_status stat)1891 static int dib7000p_get_stats(struct dvb_frontend *demod, enum fe_status stat)
1892 {
1893 struct dib7000p_state *state = demod->demodulator_priv;
1894 struct dtv_frontend_properties *c = &demod->dtv_property_cache;
1895 int show_per_stats = 0;
1896 u32 time_us = 0, val, snr;
1897 u64 blocks, ucb;
1898 s32 db;
1899 u16 strength;
1900
1901 /* Get Signal strength */
1902 dib7000p_read_signal_strength(demod, &strength);
1903 val = strength;
1904 db = interpolate_value(val,
1905 strength_to_db_table,
1906 ARRAY_SIZE(strength_to_db_table)) - DB_OFFSET;
1907 c->strength.stat[0].svalue = db;
1908
1909 /* UCB/BER/CNR measures require lock */
1910 if (!(stat & FE_HAS_LOCK)) {
1911 c->cnr.len = 1;
1912 c->block_count.len = 1;
1913 c->block_error.len = 1;
1914 c->post_bit_error.len = 1;
1915 c->post_bit_count.len = 1;
1916 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1917 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1918 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1919 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1920 c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
1921 return 0;
1922 }
1923
1924 /* Check if time for stats was elapsed */
1925 if (time_after(jiffies, state->per_jiffies_stats)) {
1926 state->per_jiffies_stats = jiffies + msecs_to_jiffies(1000);
1927
1928 /* Get SNR */
1929 snr = dib7000p_get_snr(demod);
1930 if (snr)
1931 snr = (1000L * snr) >> 24;
1932 else
1933 snr = 0;
1934 c->cnr.stat[0].svalue = snr;
1935 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
1936
1937 /* Get UCB measures */
1938 dib7000p_read_unc_blocks(demod, &val);
1939 ucb = val - state->old_ucb;
1940 if (val < state->old_ucb)
1941 ucb += 0x100000000LL;
1942
1943 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
1944 c->block_error.stat[0].uvalue = ucb;
1945
1946 /* Estimate the number of packets based on bitrate */
1947 if (!time_us)
1948 time_us = dib7000p_get_time_us(demod);
1949
1950 if (time_us) {
1951 blocks = 1250000ULL * 1000000ULL;
1952 do_div(blocks, time_us * 8 * 204);
1953 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
1954 c->block_count.stat[0].uvalue += blocks;
1955 }
1956
1957 show_per_stats = 1;
1958 }
1959
1960 /* Get post-BER measures */
1961 if (time_after(jiffies, state->ber_jiffies_stats)) {
1962 time_us = dib7000p_get_time_us(demod);
1963 state->ber_jiffies_stats = jiffies + msecs_to_jiffies((time_us + 500) / 1000);
1964
1965 dprintk("Next all layers stats available in %u us.\n", time_us);
1966
1967 dib7000p_read_ber(demod, &val);
1968 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
1969 c->post_bit_error.stat[0].uvalue += val;
1970
1971 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
1972 c->post_bit_count.stat[0].uvalue += 100000000;
1973 }
1974
1975 /* Get PER measures */
1976 if (show_per_stats) {
1977 dib7000p_read_unc_blocks(demod, &val);
1978
1979 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
1980 c->block_error.stat[0].uvalue += val;
1981
1982 time_us = dib7000p_get_time_us(demod);
1983 if (time_us) {
1984 blocks = 1250000ULL * 1000000ULL;
1985 do_div(blocks, time_us * 8 * 204);
1986 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
1987 c->block_count.stat[0].uvalue += blocks;
1988 }
1989 }
1990 return 0;
1991 }
1992
dib7000p_fe_get_tune_settings(struct dvb_frontend * fe,struct dvb_frontend_tune_settings * tune)1993 static int dib7000p_fe_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *tune)
1994 {
1995 tune->min_delay_ms = 1000;
1996 return 0;
1997 }
1998
dib7000p_release(struct dvb_frontend * demod)1999 static void dib7000p_release(struct dvb_frontend *demod)
2000 {
2001 struct dib7000p_state *st = demod->demodulator_priv;
2002 dibx000_exit_i2c_master(&st->i2c_master);
2003 i2c_del_adapter(&st->dib7090_tuner_adap);
2004 kfree(st);
2005 }
2006
dib7000pc_detection(struct i2c_adapter * i2c_adap)2007 static int dib7000pc_detection(struct i2c_adapter *i2c_adap)
2008 {
2009 u8 *tx, *rx;
2010 struct i2c_msg msg[2] = {
2011 {.addr = 18 >> 1, .flags = 0, .len = 2},
2012 {.addr = 18 >> 1, .flags = I2C_M_RD, .len = 2},
2013 };
2014 int ret = 0;
2015
2016 tx = kzalloc(2, GFP_KERNEL);
2017 if (!tx)
2018 return -ENOMEM;
2019 rx = kzalloc(2, GFP_KERNEL);
2020 if (!rx) {
2021 ret = -ENOMEM;
2022 goto rx_memory_error;
2023 }
2024
2025 msg[0].buf = tx;
2026 msg[1].buf = rx;
2027
2028 tx[0] = 0x03;
2029 tx[1] = 0x00;
2030
2031 if (i2c_transfer(i2c_adap, msg, 2) == 2)
2032 if (rx[0] == 0x01 && rx[1] == 0xb3) {
2033 dprintk("-D- DiB7000PC detected\n");
2034 ret = 1;
2035 goto out;
2036 }
2037
2038 msg[0].addr = msg[1].addr = 0x40;
2039
2040 if (i2c_transfer(i2c_adap, msg, 2) == 2)
2041 if (rx[0] == 0x01 && rx[1] == 0xb3) {
2042 dprintk("-D- DiB7000PC detected\n");
2043 ret = 1;
2044 goto out;
2045 }
2046
2047 dprintk("-D- DiB7000PC not detected\n");
2048
2049 out:
2050 kfree(rx);
2051 rx_memory_error:
2052 kfree(tx);
2053 return ret;
2054 }
2055
dib7000p_get_i2c_master(struct dvb_frontend * demod,enum dibx000_i2c_interface intf,int gating)2056 static struct i2c_adapter *dib7000p_get_i2c_master(struct dvb_frontend *demod, enum dibx000_i2c_interface intf, int gating)
2057 {
2058 struct dib7000p_state *st = demod->demodulator_priv;
2059 return dibx000_get_i2c_adapter(&st->i2c_master, intf, gating);
2060 }
2061
dib7000p_pid_filter_ctrl(struct dvb_frontend * fe,u8 onoff)2062 static int dib7000p_pid_filter_ctrl(struct dvb_frontend *fe, u8 onoff)
2063 {
2064 struct dib7000p_state *state = fe->demodulator_priv;
2065 u16 val = dib7000p_read_word(state, 235) & 0xffef;
2066 val |= (onoff & 0x1) << 4;
2067 dprintk("PID filter enabled %d\n", onoff);
2068 return dib7000p_write_word(state, 235, val);
2069 }
2070
dib7000p_pid_filter(struct dvb_frontend * fe,u8 id,u16 pid,u8 onoff)2071 static int dib7000p_pid_filter(struct dvb_frontend *fe, u8 id, u16 pid, u8 onoff)
2072 {
2073 struct dib7000p_state *state = fe->demodulator_priv;
2074 dprintk("PID filter: index %x, PID %d, OnOff %d\n", id, pid, onoff);
2075 return dib7000p_write_word(state, 241 + id, onoff ? (1 << 13) | pid : 0);
2076 }
2077
dib7000p_i2c_enumeration(struct i2c_adapter * i2c,int no_of_demods,u8 default_addr,struct dib7000p_config cfg[])2078 static int dib7000p_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, u8 default_addr, struct dib7000p_config cfg[])
2079 {
2080 struct dib7000p_state *dpst;
2081 int k = 0;
2082 u8 new_addr = 0;
2083
2084 dpst = kzalloc(sizeof(struct dib7000p_state), GFP_KERNEL);
2085 if (!dpst)
2086 return -ENOMEM;
2087
2088 dpst->i2c_adap = i2c;
2089 mutex_init(&dpst->i2c_buffer_lock);
2090
2091 for (k = no_of_demods - 1; k >= 0; k--) {
2092 dpst->cfg = cfg[k];
2093
2094 /* designated i2c address */
2095 if (cfg[k].default_i2c_addr != 0)
2096 new_addr = cfg[k].default_i2c_addr + (k << 1);
2097 else
2098 new_addr = (0x40 + k) << 1;
2099 dpst->i2c_addr = new_addr;
2100 dib7000p_write_word(dpst, 1287, 0x0003); /* sram lead in, rdy */
2101 if (dib7000p_identify(dpst) != 0) {
2102 dpst->i2c_addr = default_addr;
2103 dib7000p_write_word(dpst, 1287, 0x0003); /* sram lead in, rdy */
2104 if (dib7000p_identify(dpst) != 0) {
2105 dprintk("DiB7000P #%d: not identified\n", k);
2106 kfree(dpst);
2107 return -EIO;
2108 }
2109 }
2110
2111 /* start diversity to pull_down div_str - just for i2c-enumeration */
2112 dib7000p_set_output_mode(dpst, OUTMODE_DIVERSITY);
2113
2114 /* set new i2c address and force divstart */
2115 dib7000p_write_word(dpst, 1285, (new_addr << 2) | 0x2);
2116
2117 dprintk("IC %d initialized (to i2c_address 0x%x)\n", k, new_addr);
2118 }
2119
2120 for (k = 0; k < no_of_demods; k++) {
2121 dpst->cfg = cfg[k];
2122 if (cfg[k].default_i2c_addr != 0)
2123 dpst->i2c_addr = (cfg[k].default_i2c_addr + k) << 1;
2124 else
2125 dpst->i2c_addr = (0x40 + k) << 1;
2126
2127 // unforce divstr
2128 dib7000p_write_word(dpst, 1285, dpst->i2c_addr << 2);
2129
2130 /* deactivate div - it was just for i2c-enumeration */
2131 dib7000p_set_output_mode(dpst, OUTMODE_HIGH_Z);
2132 }
2133
2134 kfree(dpst);
2135 return 0;
2136 }
2137
2138 static const s32 lut_1000ln_mant[] = {
2139 6908, 6956, 7003, 7047, 7090, 7131, 7170, 7208, 7244, 7279, 7313, 7346, 7377, 7408, 7438, 7467, 7495, 7523, 7549, 7575, 7600
2140 };
2141
dib7000p_get_adc_power(struct dvb_frontend * fe)2142 static s32 dib7000p_get_adc_power(struct dvb_frontend *fe)
2143 {
2144 struct dib7000p_state *state = fe->demodulator_priv;
2145 u32 tmp_val = 0, exp = 0, mant = 0;
2146 s32 pow_i;
2147 u16 buf[2];
2148 u8 ix = 0;
2149
2150 buf[0] = dib7000p_read_word(state, 0x184);
2151 buf[1] = dib7000p_read_word(state, 0x185);
2152 pow_i = (buf[0] << 16) | buf[1];
2153 dprintk("raw pow_i = %d\n", pow_i);
2154
2155 tmp_val = pow_i;
2156 while (tmp_val >>= 1)
2157 exp++;
2158
2159 mant = (pow_i * 1000 / (1 << exp));
2160 dprintk(" mant = %d exp = %d\n", mant / 1000, exp);
2161
2162 ix = (u8) ((mant - 1000) / 100); /* index of the LUT */
2163 dprintk(" ix = %d\n", ix);
2164
2165 pow_i = (lut_1000ln_mant[ix] + 693 * (exp - 20) - 6908);
2166 pow_i = (pow_i << 8) / 1000;
2167 dprintk(" pow_i = %d\n", pow_i);
2168
2169 return pow_i;
2170 }
2171
map_addr_to_serpar_number(struct i2c_msg * msg)2172 static int map_addr_to_serpar_number(struct i2c_msg *msg)
2173 {
2174 if ((msg->buf[0] <= 15))
2175 msg->buf[0] -= 1;
2176 else if (msg->buf[0] == 17)
2177 msg->buf[0] = 15;
2178 else if (msg->buf[0] == 16)
2179 msg->buf[0] = 17;
2180 else if (msg->buf[0] == 19)
2181 msg->buf[0] = 16;
2182 else if (msg->buf[0] >= 21 && msg->buf[0] <= 25)
2183 msg->buf[0] -= 3;
2184 else if (msg->buf[0] == 28)
2185 msg->buf[0] = 23;
2186 else
2187 return -EINVAL;
2188 return 0;
2189 }
2190
w7090p_tuner_write_serpar(struct i2c_adapter * i2c_adap,struct i2c_msg msg[],int num)2191 static int w7090p_tuner_write_serpar(struct i2c_adapter *i2c_adap, struct i2c_msg msg[], int num)
2192 {
2193 struct dib7000p_state *state = i2c_get_adapdata(i2c_adap);
2194 u8 n_overflow = 1;
2195 u16 i = 1000;
2196 u16 serpar_num = msg[0].buf[0];
2197
2198 while (n_overflow == 1 && i) {
2199 n_overflow = (dib7000p_read_word(state, 1984) >> 1) & 0x1;
2200 i--;
2201 if (i == 0)
2202 dprintk("Tuner ITF: write busy (overflow)\n");
2203 }
2204 dib7000p_write_word(state, 1985, (1 << 6) | (serpar_num & 0x3f));
2205 dib7000p_write_word(state, 1986, (msg[0].buf[1] << 8) | msg[0].buf[2]);
2206
2207 return num;
2208 }
2209
w7090p_tuner_read_serpar(struct i2c_adapter * i2c_adap,struct i2c_msg msg[],int num)2210 static int w7090p_tuner_read_serpar(struct i2c_adapter *i2c_adap, struct i2c_msg msg[], int num)
2211 {
2212 struct dib7000p_state *state = i2c_get_adapdata(i2c_adap);
2213 u8 n_overflow = 1, n_empty = 1;
2214 u16 i = 1000;
2215 u16 serpar_num = msg[0].buf[0];
2216 u16 read_word;
2217
2218 while (n_overflow == 1 && i) {
2219 n_overflow = (dib7000p_read_word(state, 1984) >> 1) & 0x1;
2220 i--;
2221 if (i == 0)
2222 dprintk("TunerITF: read busy (overflow)\n");
2223 }
2224 dib7000p_write_word(state, 1985, (0 << 6) | (serpar_num & 0x3f));
2225
2226 i = 1000;
2227 while (n_empty == 1 && i) {
2228 n_empty = dib7000p_read_word(state, 1984) & 0x1;
2229 i--;
2230 if (i == 0)
2231 dprintk("TunerITF: read busy (empty)\n");
2232 }
2233 read_word = dib7000p_read_word(state, 1987);
2234 msg[1].buf[0] = (read_word >> 8) & 0xff;
2235 msg[1].buf[1] = (read_word) & 0xff;
2236
2237 return num;
2238 }
2239
w7090p_tuner_rw_serpar(struct i2c_adapter * i2c_adap,struct i2c_msg msg[],int num)2240 static int w7090p_tuner_rw_serpar(struct i2c_adapter *i2c_adap, struct i2c_msg msg[], int num)
2241 {
2242 if (map_addr_to_serpar_number(&msg[0]) == 0) { /* else = Tuner regs to ignore : DIG_CFG, CTRL_RF_LT, PLL_CFG, PWM1_REG, ADCCLK, DIG_CFG_3; SLEEP_EN... */
2243 if (num == 1) { /* write */
2244 return w7090p_tuner_write_serpar(i2c_adap, msg, 1);
2245 } else { /* read */
2246 return w7090p_tuner_read_serpar(i2c_adap, msg, 2);
2247 }
2248 }
2249 return num;
2250 }
2251
dib7090p_rw_on_apb(struct i2c_adapter * i2c_adap,struct i2c_msg msg[],int num,u16 apb_address)2252 static int dib7090p_rw_on_apb(struct i2c_adapter *i2c_adap,
2253 struct i2c_msg msg[], int num, u16 apb_address)
2254 {
2255 struct dib7000p_state *state = i2c_get_adapdata(i2c_adap);
2256 u16 word;
2257
2258 if (num == 1) { /* write */
2259 dib7000p_write_word(state, apb_address, ((msg[0].buf[1] << 8) | (msg[0].buf[2])));
2260 } else {
2261 word = dib7000p_read_word(state, apb_address);
2262 msg[1].buf[0] = (word >> 8) & 0xff;
2263 msg[1].buf[1] = (word) & 0xff;
2264 }
2265
2266 return num;
2267 }
2268
dib7090_tuner_xfer(struct i2c_adapter * i2c_adap,struct i2c_msg msg[],int num)2269 static int dib7090_tuner_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msg[], int num)
2270 {
2271 struct dib7000p_state *state = i2c_get_adapdata(i2c_adap);
2272
2273 u16 apb_address = 0, word;
2274 int i = 0;
2275 switch (msg[0].buf[0]) {
2276 case 0x12:
2277 apb_address = 1920;
2278 break;
2279 case 0x14:
2280 apb_address = 1921;
2281 break;
2282 case 0x24:
2283 apb_address = 1922;
2284 break;
2285 case 0x1a:
2286 apb_address = 1923;
2287 break;
2288 case 0x22:
2289 apb_address = 1924;
2290 break;
2291 case 0x33:
2292 apb_address = 1926;
2293 break;
2294 case 0x34:
2295 apb_address = 1927;
2296 break;
2297 case 0x35:
2298 apb_address = 1928;
2299 break;
2300 case 0x36:
2301 apb_address = 1929;
2302 break;
2303 case 0x37:
2304 apb_address = 1930;
2305 break;
2306 case 0x38:
2307 apb_address = 1931;
2308 break;
2309 case 0x39:
2310 apb_address = 1932;
2311 break;
2312 case 0x2a:
2313 apb_address = 1935;
2314 break;
2315 case 0x2b:
2316 apb_address = 1936;
2317 break;
2318 case 0x2c:
2319 apb_address = 1937;
2320 break;
2321 case 0x2d:
2322 apb_address = 1938;
2323 break;
2324 case 0x2e:
2325 apb_address = 1939;
2326 break;
2327 case 0x2f:
2328 apb_address = 1940;
2329 break;
2330 case 0x30:
2331 apb_address = 1941;
2332 break;
2333 case 0x31:
2334 apb_address = 1942;
2335 break;
2336 case 0x32:
2337 apb_address = 1943;
2338 break;
2339 case 0x3e:
2340 apb_address = 1944;
2341 break;
2342 case 0x3f:
2343 apb_address = 1945;
2344 break;
2345 case 0x40:
2346 apb_address = 1948;
2347 break;
2348 case 0x25:
2349 apb_address = 914;
2350 break;
2351 case 0x26:
2352 apb_address = 915;
2353 break;
2354 case 0x27:
2355 apb_address = 917;
2356 break;
2357 case 0x28:
2358 apb_address = 916;
2359 break;
2360 case 0x1d:
2361 i = ((dib7000p_read_word(state, 72) >> 12) & 0x3);
2362 word = dib7000p_read_word(state, 384 + i);
2363 msg[1].buf[0] = (word >> 8) & 0xff;
2364 msg[1].buf[1] = (word) & 0xff;
2365 return num;
2366 case 0x1f:
2367 if (num == 1) { /* write */
2368 word = (u16) ((msg[0].buf[1] << 8) | msg[0].buf[2]);
2369 word &= 0x3;
2370 word = (dib7000p_read_word(state, 72) & ~(3 << 12)) | (word << 12);
2371 dib7000p_write_word(state, 72, word); /* Set the proper input */
2372 return num;
2373 }
2374 }
2375
2376 if (apb_address != 0) /* R/W access via APB */
2377 return dib7090p_rw_on_apb(i2c_adap, msg, num, apb_address);
2378 else /* R/W access via SERPAR */
2379 return w7090p_tuner_rw_serpar(i2c_adap, msg, num);
2380
2381 return 0;
2382 }
2383
dib7000p_i2c_func(struct i2c_adapter * adapter)2384 static u32 dib7000p_i2c_func(struct i2c_adapter *adapter)
2385 {
2386 return I2C_FUNC_I2C;
2387 }
2388
2389 static const struct i2c_algorithm dib7090_tuner_xfer_algo = {
2390 .master_xfer = dib7090_tuner_xfer,
2391 .functionality = dib7000p_i2c_func,
2392 };
2393
dib7090_get_i2c_tuner(struct dvb_frontend * fe)2394 static struct i2c_adapter *dib7090_get_i2c_tuner(struct dvb_frontend *fe)
2395 {
2396 struct dib7000p_state *st = fe->demodulator_priv;
2397 return &st->dib7090_tuner_adap;
2398 }
2399
dib7090_host_bus_drive(struct dib7000p_state * state,u8 drive)2400 static int dib7090_host_bus_drive(struct dib7000p_state *state, u8 drive)
2401 {
2402 u16 reg;
2403
2404 /* drive host bus 2, 3, 4 */
2405 reg = dib7000p_read_word(state, 1798) & ~((0x7) | (0x7 << 6) | (0x7 << 12));
2406 reg |= (drive << 12) | (drive << 6) | drive;
2407 dib7000p_write_word(state, 1798, reg);
2408
2409 /* drive host bus 5,6 */
2410 reg = dib7000p_read_word(state, 1799) & ~((0x7 << 2) | (0x7 << 8));
2411 reg |= (drive << 8) | (drive << 2);
2412 dib7000p_write_word(state, 1799, reg);
2413
2414 /* drive host bus 7, 8, 9 */
2415 reg = dib7000p_read_word(state, 1800) & ~((0x7) | (0x7 << 6) | (0x7 << 12));
2416 reg |= (drive << 12) | (drive << 6) | drive;
2417 dib7000p_write_word(state, 1800, reg);
2418
2419 /* drive host bus 10, 11 */
2420 reg = dib7000p_read_word(state, 1801) & ~((0x7 << 2) | (0x7 << 8));
2421 reg |= (drive << 8) | (drive << 2);
2422 dib7000p_write_word(state, 1801, reg);
2423
2424 /* drive host bus 12, 13, 14 */
2425 reg = dib7000p_read_word(state, 1802) & ~((0x7) | (0x7 << 6) | (0x7 << 12));
2426 reg |= (drive << 12) | (drive << 6) | drive;
2427 dib7000p_write_word(state, 1802, reg);
2428
2429 return 0;
2430 }
2431
dib7090_calcSyncFreq(u32 P_Kin,u32 P_Kout,u32 insertExtSynchro,u32 syncSize)2432 static u32 dib7090_calcSyncFreq(u32 P_Kin, u32 P_Kout, u32 insertExtSynchro, u32 syncSize)
2433 {
2434 u32 quantif = 3;
2435 u32 nom = (insertExtSynchro * P_Kin + syncSize);
2436 u32 denom = P_Kout;
2437 u32 syncFreq = ((nom << quantif) / denom);
2438
2439 if ((syncFreq & ((1 << quantif) - 1)) != 0)
2440 syncFreq = (syncFreq >> quantif) + 1;
2441 else
2442 syncFreq = (syncFreq >> quantif);
2443
2444 if (syncFreq != 0)
2445 syncFreq = syncFreq - 1;
2446
2447 return syncFreq;
2448 }
2449
dib7090_cfg_DibTx(struct dib7000p_state * state,u32 P_Kin,u32 P_Kout,u32 insertExtSynchro,u32 synchroMode,u32 syncWord,u32 syncSize)2450 static int dib7090_cfg_DibTx(struct dib7000p_state *state, u32 P_Kin, u32 P_Kout, u32 insertExtSynchro, u32 synchroMode, u32 syncWord, u32 syncSize)
2451 {
2452 dprintk("Configure DibStream Tx\n");
2453
2454 dib7000p_write_word(state, 1615, 1);
2455 dib7000p_write_word(state, 1603, P_Kin);
2456 dib7000p_write_word(state, 1605, P_Kout);
2457 dib7000p_write_word(state, 1606, insertExtSynchro);
2458 dib7000p_write_word(state, 1608, synchroMode);
2459 dib7000p_write_word(state, 1609, (syncWord >> 16) & 0xffff);
2460 dib7000p_write_word(state, 1610, syncWord & 0xffff);
2461 dib7000p_write_word(state, 1612, syncSize);
2462 dib7000p_write_word(state, 1615, 0);
2463
2464 return 0;
2465 }
2466
dib7090_cfg_DibRx(struct dib7000p_state * state,u32 P_Kin,u32 P_Kout,u32 synchroMode,u32 insertExtSynchro,u32 syncWord,u32 syncSize,u32 dataOutRate)2467 static int dib7090_cfg_DibRx(struct dib7000p_state *state, u32 P_Kin, u32 P_Kout, u32 synchroMode, u32 insertExtSynchro, u32 syncWord, u32 syncSize,
2468 u32 dataOutRate)
2469 {
2470 u32 syncFreq;
2471
2472 dprintk("Configure DibStream Rx\n");
2473 if ((P_Kin != 0) && (P_Kout != 0)) {
2474 syncFreq = dib7090_calcSyncFreq(P_Kin, P_Kout, insertExtSynchro, syncSize);
2475 dib7000p_write_word(state, 1542, syncFreq);
2476 }
2477 dib7000p_write_word(state, 1554, 1);
2478 dib7000p_write_word(state, 1536, P_Kin);
2479 dib7000p_write_word(state, 1537, P_Kout);
2480 dib7000p_write_word(state, 1539, synchroMode);
2481 dib7000p_write_word(state, 1540, (syncWord >> 16) & 0xffff);
2482 dib7000p_write_word(state, 1541, syncWord & 0xffff);
2483 dib7000p_write_word(state, 1543, syncSize);
2484 dib7000p_write_word(state, 1544, dataOutRate);
2485 dib7000p_write_word(state, 1554, 0);
2486
2487 return 0;
2488 }
2489
dib7090_enMpegMux(struct dib7000p_state * state,int onoff)2490 static void dib7090_enMpegMux(struct dib7000p_state *state, int onoff)
2491 {
2492 u16 reg_1287 = dib7000p_read_word(state, 1287);
2493
2494 switch (onoff) {
2495 case 1:
2496 reg_1287 &= ~(1<<7);
2497 break;
2498 case 0:
2499 reg_1287 |= (1<<7);
2500 break;
2501 }
2502
2503 dib7000p_write_word(state, 1287, reg_1287);
2504 }
2505
dib7090_configMpegMux(struct dib7000p_state * state,u16 pulseWidth,u16 enSerialMode,u16 enSerialClkDiv2)2506 static void dib7090_configMpegMux(struct dib7000p_state *state,
2507 u16 pulseWidth, u16 enSerialMode, u16 enSerialClkDiv2)
2508 {
2509 dprintk("Enable Mpeg mux\n");
2510
2511 dib7090_enMpegMux(state, 0);
2512
2513 /* If the input mode is MPEG do not divide the serial clock */
2514 if ((enSerialMode == 1) && (state->input_mode_mpeg == 1))
2515 enSerialClkDiv2 = 0;
2516
2517 dib7000p_write_word(state, 1287, ((pulseWidth & 0x1f) << 2)
2518 | ((enSerialMode & 0x1) << 1)
2519 | (enSerialClkDiv2 & 0x1));
2520
2521 dib7090_enMpegMux(state, 1);
2522 }
2523
dib7090_setDibTxMux(struct dib7000p_state * state,int mode)2524 static void dib7090_setDibTxMux(struct dib7000p_state *state, int mode)
2525 {
2526 u16 reg_1288 = dib7000p_read_word(state, 1288) & ~(0x7 << 7);
2527
2528 switch (mode) {
2529 case MPEG_ON_DIBTX:
2530 dprintk("SET MPEG ON DIBSTREAM TX\n");
2531 dib7090_cfg_DibTx(state, 8, 5, 0, 0, 0, 0);
2532 reg_1288 |= (1<<9);
2533 break;
2534 case DIV_ON_DIBTX:
2535 dprintk("SET DIV_OUT ON DIBSTREAM TX\n");
2536 dib7090_cfg_DibTx(state, 5, 5, 0, 0, 0, 0);
2537 reg_1288 |= (1<<8);
2538 break;
2539 case ADC_ON_DIBTX:
2540 dprintk("SET ADC_OUT ON DIBSTREAM TX\n");
2541 dib7090_cfg_DibTx(state, 20, 5, 10, 0, 0, 0);
2542 reg_1288 |= (1<<7);
2543 break;
2544 default:
2545 break;
2546 }
2547 dib7000p_write_word(state, 1288, reg_1288);
2548 }
2549
dib7090_setHostBusMux(struct dib7000p_state * state,int mode)2550 static void dib7090_setHostBusMux(struct dib7000p_state *state, int mode)
2551 {
2552 u16 reg_1288 = dib7000p_read_word(state, 1288) & ~(0x7 << 4);
2553
2554 switch (mode) {
2555 case DEMOUT_ON_HOSTBUS:
2556 dprintk("SET DEM OUT OLD INTERF ON HOST BUS\n");
2557 dib7090_enMpegMux(state, 0);
2558 reg_1288 |= (1<<6);
2559 break;
2560 case DIBTX_ON_HOSTBUS:
2561 dprintk("SET DIBSTREAM TX ON HOST BUS\n");
2562 dib7090_enMpegMux(state, 0);
2563 reg_1288 |= (1<<5);
2564 break;
2565 case MPEG_ON_HOSTBUS:
2566 dprintk("SET MPEG MUX ON HOST BUS\n");
2567 reg_1288 |= (1<<4);
2568 break;
2569 default:
2570 break;
2571 }
2572 dib7000p_write_word(state, 1288, reg_1288);
2573 }
2574
dib7090_set_diversity_in(struct dvb_frontend * fe,int onoff)2575 static int dib7090_set_diversity_in(struct dvb_frontend *fe, int onoff)
2576 {
2577 struct dib7000p_state *state = fe->demodulator_priv;
2578 u16 reg_1287;
2579
2580 switch (onoff) {
2581 case 0: /* only use the internal way - not the diversity input */
2582 dprintk("%s mode OFF : by default Enable Mpeg INPUT\n", __func__);
2583 dib7090_cfg_DibRx(state, 8, 5, 0, 0, 0, 8, 0);
2584
2585 /* Do not divide the serial clock of MPEG MUX */
2586 /* in SERIAL MODE in case input mode MPEG is used */
2587 reg_1287 = dib7000p_read_word(state, 1287);
2588 /* enSerialClkDiv2 == 1 ? */
2589 if ((reg_1287 & 0x1) == 1) {
2590 /* force enSerialClkDiv2 = 0 */
2591 reg_1287 &= ~0x1;
2592 dib7000p_write_word(state, 1287, reg_1287);
2593 }
2594 state->input_mode_mpeg = 1;
2595 break;
2596 case 1: /* both ways */
2597 case 2: /* only the diversity input */
2598 dprintk("%s ON : Enable diversity INPUT\n", __func__);
2599 dib7090_cfg_DibRx(state, 5, 5, 0, 0, 0, 0, 0);
2600 state->input_mode_mpeg = 0;
2601 break;
2602 }
2603
2604 dib7000p_set_diversity_in(&state->demod, onoff);
2605 return 0;
2606 }
2607
dib7090_set_output_mode(struct dvb_frontend * fe,int mode)2608 static int dib7090_set_output_mode(struct dvb_frontend *fe, int mode)
2609 {
2610 struct dib7000p_state *state = fe->demodulator_priv;
2611
2612 u16 outreg, smo_mode, fifo_threshold;
2613 u8 prefer_mpeg_mux_use = 1;
2614 int ret = 0;
2615
2616 dib7090_host_bus_drive(state, 1);
2617
2618 fifo_threshold = 1792;
2619 smo_mode = (dib7000p_read_word(state, 235) & 0x0050) | (1 << 1);
2620 outreg = dib7000p_read_word(state, 1286) & ~((1 << 10) | (0x7 << 6) | (1 << 1));
2621
2622 switch (mode) {
2623 case OUTMODE_HIGH_Z:
2624 outreg = 0;
2625 break;
2626
2627 case OUTMODE_MPEG2_SERIAL:
2628 if (prefer_mpeg_mux_use) {
2629 dprintk("setting output mode TS_SERIAL using Mpeg Mux\n");
2630 dib7090_configMpegMux(state, 3, 1, 1);
2631 dib7090_setHostBusMux(state, MPEG_ON_HOSTBUS);
2632 } else {/* Use Smooth block */
2633 dprintk("setting output mode TS_SERIAL using Smooth bloc\n");
2634 dib7090_setHostBusMux(state, DEMOUT_ON_HOSTBUS);
2635 outreg |= (2<<6) | (0 << 1);
2636 }
2637 break;
2638
2639 case OUTMODE_MPEG2_PAR_GATED_CLK:
2640 if (prefer_mpeg_mux_use) {
2641 dprintk("setting output mode TS_PARALLEL_GATED using Mpeg Mux\n");
2642 dib7090_configMpegMux(state, 2, 0, 0);
2643 dib7090_setHostBusMux(state, MPEG_ON_HOSTBUS);
2644 } else { /* Use Smooth block */
2645 dprintk("setting output mode TS_PARALLEL_GATED using Smooth block\n");
2646 dib7090_setHostBusMux(state, DEMOUT_ON_HOSTBUS);
2647 outreg |= (0<<6);
2648 }
2649 break;
2650
2651 case OUTMODE_MPEG2_PAR_CONT_CLK: /* Using Smooth block only */
2652 dprintk("setting output mode TS_PARALLEL_CONT using Smooth block\n");
2653 dib7090_setHostBusMux(state, DEMOUT_ON_HOSTBUS);
2654 outreg |= (1<<6);
2655 break;
2656
2657 case OUTMODE_MPEG2_FIFO: /* Using Smooth block because not supported by new Mpeg Mux bloc */
2658 dprintk("setting output mode TS_FIFO using Smooth block\n");
2659 dib7090_setHostBusMux(state, DEMOUT_ON_HOSTBUS);
2660 outreg |= (5<<6);
2661 smo_mode |= (3 << 1);
2662 fifo_threshold = 512;
2663 break;
2664
2665 case OUTMODE_DIVERSITY:
2666 dprintk("setting output mode MODE_DIVERSITY\n");
2667 dib7090_setDibTxMux(state, DIV_ON_DIBTX);
2668 dib7090_setHostBusMux(state, DIBTX_ON_HOSTBUS);
2669 break;
2670
2671 case OUTMODE_ANALOG_ADC:
2672 dprintk("setting output mode MODE_ANALOG_ADC\n");
2673 dib7090_setDibTxMux(state, ADC_ON_DIBTX);
2674 dib7090_setHostBusMux(state, DIBTX_ON_HOSTBUS);
2675 break;
2676 }
2677 if (mode != OUTMODE_HIGH_Z)
2678 outreg |= (1 << 10);
2679
2680 if (state->cfg.output_mpeg2_in_188_bytes)
2681 smo_mode |= (1 << 5);
2682
2683 ret |= dib7000p_write_word(state, 235, smo_mode);
2684 ret |= dib7000p_write_word(state, 236, fifo_threshold); /* synchronous fread */
2685 ret |= dib7000p_write_word(state, 1286, outreg);
2686
2687 return ret;
2688 }
2689
dib7090_tuner_sleep(struct dvb_frontend * fe,int onoff)2690 static int dib7090_tuner_sleep(struct dvb_frontend *fe, int onoff)
2691 {
2692 struct dib7000p_state *state = fe->demodulator_priv;
2693 u16 en_cur_state;
2694
2695 dprintk("sleep dib7090: %d\n", onoff);
2696
2697 en_cur_state = dib7000p_read_word(state, 1922);
2698
2699 if (en_cur_state > 0xff)
2700 state->tuner_enable = en_cur_state;
2701
2702 if (onoff)
2703 en_cur_state &= 0x00ff;
2704 else {
2705 if (state->tuner_enable != 0)
2706 en_cur_state = state->tuner_enable;
2707 }
2708
2709 dib7000p_write_word(state, 1922, en_cur_state);
2710
2711 return 0;
2712 }
2713
dib7090_get_adc_power(struct dvb_frontend * fe)2714 static int dib7090_get_adc_power(struct dvb_frontend *fe)
2715 {
2716 return dib7000p_get_adc_power(fe);
2717 }
2718
dib7090_slave_reset(struct dvb_frontend * fe)2719 static int dib7090_slave_reset(struct dvb_frontend *fe)
2720 {
2721 struct dib7000p_state *state = fe->demodulator_priv;
2722 u16 reg;
2723
2724 reg = dib7000p_read_word(state, 1794);
2725 dib7000p_write_word(state, 1794, reg | (4 << 12));
2726
2727 dib7000p_write_word(state, 1032, 0xffff);
2728 return 0;
2729 }
2730
2731 static const struct dvb_frontend_ops dib7000p_ops;
dib7000p_init(struct i2c_adapter * i2c_adap,u8 i2c_addr,struct dib7000p_config * cfg)2732 static struct dvb_frontend *dib7000p_init(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000p_config *cfg)
2733 {
2734 struct dvb_frontend *demod;
2735 struct dib7000p_state *st;
2736 st = kzalloc(sizeof(struct dib7000p_state), GFP_KERNEL);
2737 if (st == NULL)
2738 return NULL;
2739
2740 memcpy(&st->cfg, cfg, sizeof(struct dib7000p_config));
2741 st->i2c_adap = i2c_adap;
2742 st->i2c_addr = i2c_addr;
2743 st->gpio_val = cfg->gpio_val;
2744 st->gpio_dir = cfg->gpio_dir;
2745
2746 /* Ensure the output mode remains at the previous default if it's
2747 * not specifically set by the caller.
2748 */
2749 if ((st->cfg.output_mode != OUTMODE_MPEG2_SERIAL) && (st->cfg.output_mode != OUTMODE_MPEG2_PAR_GATED_CLK))
2750 st->cfg.output_mode = OUTMODE_MPEG2_FIFO;
2751
2752 demod = &st->demod;
2753 demod->demodulator_priv = st;
2754 memcpy(&st->demod.ops, &dib7000p_ops, sizeof(struct dvb_frontend_ops));
2755 mutex_init(&st->i2c_buffer_lock);
2756
2757 dib7000p_write_word(st, 1287, 0x0003); /* sram lead in, rdy */
2758
2759 if (dib7000p_identify(st) != 0)
2760 goto error;
2761
2762 st->version = dib7000p_read_word(st, 897);
2763
2764 /* FIXME: make sure the dev.parent field is initialized, or else
2765 request_firmware() will hit an OOPS (this should be moved somewhere
2766 more common) */
2767 st->i2c_master.gated_tuner_i2c_adap.dev.parent = i2c_adap->dev.parent;
2768
2769 dibx000_init_i2c_master(&st->i2c_master, DIB7000P, st->i2c_adap, st->i2c_addr);
2770
2771 /* init 7090 tuner adapter */
2772 strscpy(st->dib7090_tuner_adap.name, "DiB7090 tuner interface",
2773 sizeof(st->dib7090_tuner_adap.name));
2774 st->dib7090_tuner_adap.algo = &dib7090_tuner_xfer_algo;
2775 st->dib7090_tuner_adap.algo_data = NULL;
2776 st->dib7090_tuner_adap.dev.parent = st->i2c_adap->dev.parent;
2777 i2c_set_adapdata(&st->dib7090_tuner_adap, st);
2778 i2c_add_adapter(&st->dib7090_tuner_adap);
2779
2780 dib7000p_demod_reset(st);
2781
2782 dib7000p_reset_stats(demod);
2783
2784 if (st->version == SOC7090) {
2785 dib7090_set_output_mode(demod, st->cfg.output_mode);
2786 dib7090_set_diversity_in(demod, 0);
2787 }
2788
2789 return demod;
2790
2791 error:
2792 kfree(st);
2793 return NULL;
2794 }
2795
dib7000p_attach(struct dib7000p_ops * ops)2796 void *dib7000p_attach(struct dib7000p_ops *ops)
2797 {
2798 if (!ops)
2799 return NULL;
2800
2801 ops->slave_reset = dib7090_slave_reset;
2802 ops->get_adc_power = dib7090_get_adc_power;
2803 ops->dib7000pc_detection = dib7000pc_detection;
2804 ops->get_i2c_tuner = dib7090_get_i2c_tuner;
2805 ops->tuner_sleep = dib7090_tuner_sleep;
2806 ops->init = dib7000p_init;
2807 ops->set_agc1_min = dib7000p_set_agc1_min;
2808 ops->set_gpio = dib7000p_set_gpio;
2809 ops->i2c_enumeration = dib7000p_i2c_enumeration;
2810 ops->pid_filter = dib7000p_pid_filter;
2811 ops->pid_filter_ctrl = dib7000p_pid_filter_ctrl;
2812 ops->get_i2c_master = dib7000p_get_i2c_master;
2813 ops->update_pll = dib7000p_update_pll;
2814 ops->ctrl_timf = dib7000p_ctrl_timf;
2815 ops->get_agc_values = dib7000p_get_agc_values;
2816 ops->set_wbd_ref = dib7000p_set_wbd_ref;
2817
2818 return ops;
2819 }
2820 EXPORT_SYMBOL_GPL(dib7000p_attach);
2821
2822 static const struct dvb_frontend_ops dib7000p_ops = {
2823 .delsys = { SYS_DVBT },
2824 .info = {
2825 .name = "DiBcom 7000PC",
2826 .frequency_min_hz = 44250 * kHz,
2827 .frequency_max_hz = 867250 * kHz,
2828 .frequency_stepsize_hz = 62500,
2829 .caps = FE_CAN_INVERSION_AUTO |
2830 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
2831 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
2832 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
2833 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_RECOVER | FE_CAN_HIERARCHY_AUTO,
2834 },
2835
2836 .release = dib7000p_release,
2837
2838 .init = dib7000p_wakeup,
2839 .sleep = dib7000p_sleep,
2840
2841 .set_frontend = dib7000p_set_frontend,
2842 .get_tune_settings = dib7000p_fe_get_tune_settings,
2843 .get_frontend = dib7000p_get_frontend,
2844
2845 .read_status = dib7000p_read_status,
2846 .read_ber = dib7000p_read_ber,
2847 .read_signal_strength = dib7000p_read_signal_strength,
2848 .read_snr = dib7000p_read_snr,
2849 .read_ucblocks = dib7000p_read_unc_blocks,
2850 };
2851
2852 MODULE_AUTHOR("Olivier Grenie <olivie.grenie@parrot.com>");
2853 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
2854 MODULE_DESCRIPTION("Driver for the DiBcom 7000PC COFDM demodulator");
2855 MODULE_LICENSE("GPL");
2856