blob: 170720b02815268c54b348d319d4a66d0532e454 [file] [log] [blame]
Chris Pascoe780dfef2006-02-28 08:34:59 -03001/*
2 * Driver for Zarlink DVB-T ZL10353 demodulator
3 *
Chris Pascoe794604c2007-11-19 03:55:45 -03004 * Copyright (C) 2006, 2007 Christopher Pascoe <c.pascoe@itee.uq.edu.au>
Chris Pascoe780dfef2006-02-28 08:34:59 -03005 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 *
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
Chris Pascoe794604c2007-11-19 03:55:45 -030019 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Chris Pascoe780dfef2006-02-28 08:34:59 -030020 */
21
22#include <linux/kernel.h>
23#include <linux/module.h>
Chris Pascoe780dfef2006-02-28 08:34:59 -030024#include <linux/init.h>
25#include <linux/delay.h>
26#include <linux/string.h>
27#include <linux/slab.h>
Chris Pascoe794604c2007-11-19 03:55:45 -030028#include <asm/div64.h>
Chris Pascoe780dfef2006-02-28 08:34:59 -030029
30#include "dvb_frontend.h"
31#include "zl10353_priv.h"
32#include "zl10353.h"
33
34struct zl10353_state {
35 struct i2c_adapter *i2c;
36 struct dvb_frontend frontend;
Chris Pascoe780dfef2006-02-28 08:34:59 -030037
38 struct zl10353_config config;
Chris Pascoebc514712007-12-15 03:24:00 -030039
40 enum fe_bandwidth bandwidth;
Chris Pascoe780dfef2006-02-28 08:34:59 -030041};
42
Antti Palosaarif7f57772007-02-10 10:19:11 -030043static int debug;
44#define dprintk(args...) \
45 do { \
46 if (debug) printk(KERN_DEBUG "zl10353: " args); \
47 } while (0)
48
Douglas Schilling Landgrafff699e62008-04-22 14:41:48 -030049static int debug_regs;
Chris Pascoe780dfef2006-02-28 08:34:59 -030050
51static int zl10353_single_write(struct dvb_frontend *fe, u8 reg, u8 val)
52{
53 struct zl10353_state *state = fe->demodulator_priv;
54 u8 buf[2] = { reg, val };
55 struct i2c_msg msg = { .addr = state->config.demod_address, .flags = 0,
56 .buf = buf, .len = 2 };
57 int err = i2c_transfer(state->i2c, &msg, 1);
58 if (err != 1) {
59 printk("zl10353: write to reg %x failed (err = %d)!\n", reg, err);
60 return err;
61 }
62 return 0;
63}
64
Adrian Bunk34630402007-02-06 21:50:36 -030065static int zl10353_write(struct dvb_frontend *fe, u8 *ibuf, int ilen)
Chris Pascoe780dfef2006-02-28 08:34:59 -030066{
67 int err, i;
68 for (i = 0; i < ilen - 1; i++)
69 if ((err = zl10353_single_write(fe, ibuf[0] + i, ibuf[i + 1])))
70 return err;
71
72 return 0;
73}
74
75static int zl10353_read_register(struct zl10353_state *state, u8 reg)
76{
77 int ret;
78 u8 b0[1] = { reg };
79 u8 b1[1] = { 0 };
80 struct i2c_msg msg[2] = { { .addr = state->config.demod_address,
81 .flags = 0,
82 .buf = b0, .len = 1 },
83 { .addr = state->config.demod_address,
84 .flags = I2C_M_RD,
85 .buf = b1, .len = 1 } };
86
87 ret = i2c_transfer(state->i2c, msg, 2);
88
89 if (ret != 2) {
90 printk("%s: readreg error (reg=%d, ret==%i)\n",
Harvey Harrison271ddbf2008-04-08 23:20:00 -030091 __func__, reg, ret);
Chris Pascoe780dfef2006-02-28 08:34:59 -030092 return ret;
93 }
94
95 return b1[0];
96}
97
Adrian Bunkc04e89b2006-03-15 16:17:11 -030098static void zl10353_dump_regs(struct dvb_frontend *fe)
Chris Pascoe780dfef2006-02-28 08:34:59 -030099{
100 struct zl10353_state *state = fe->demodulator_priv;
101 char buf[52], buf2[4];
102 int ret;
103 u8 reg;
104
105 /* Dump all registers. */
106 for (reg = 0; ; reg++) {
107 if (reg % 16 == 0) {
108 if (reg)
109 printk(KERN_DEBUG "%s\n", buf);
110 sprintf(buf, "%02x: ", reg);
111 }
112 ret = zl10353_read_register(state, reg);
113 if (ret >= 0)
114 sprintf(buf2, "%02x ", (u8)ret);
115 else
116 strcpy(buf2, "-- ");
117 strcat(buf, buf2);
118 if (reg == 0xff)
119 break;
120 }
121 printk(KERN_DEBUG "%s\n", buf);
122}
123
Antti Palosaarif7f57772007-02-10 10:19:11 -0300124static void zl10353_calc_nominal_rate(struct dvb_frontend *fe,
125 enum fe_bandwidth bandwidth,
126 u16 *nominal_rate)
127{
Antti Palosaarif7f57772007-02-10 10:19:11 -0300128 struct zl10353_state *state = fe->demodulator_priv;
Chris Pascoea1dcd9d2007-11-20 08:17:54 -0300129 u32 adc_clock = 450560; /* 45.056 MHz */
130 u64 value;
131 u8 bw;
Antti Palosaarif7f57772007-02-10 10:19:11 -0300132
133 if (state->config.adc_clock)
134 adc_clock = state->config.adc_clock;
135
136 switch (bandwidth) {
137 case BANDWIDTH_6_MHZ:
138 bw = 6;
139 break;
140 case BANDWIDTH_7_MHZ:
141 bw = 7;
142 break;
143 case BANDWIDTH_8_MHZ:
144 default:
145 bw = 8;
146 break;
147 }
148
Andrew Morton18ff6052007-12-12 21:43:57 -0300149 value = (u64)10 * (1 << 23) / 7 * 125;
150 value = (bw * value) + adc_clock / 2;
Chris Pascoea1dcd9d2007-11-20 08:17:54 -0300151 do_div(value, adc_clock);
152 *nominal_rate = value;
Antti Palosaarif7f57772007-02-10 10:19:11 -0300153
154 dprintk("%s: bw %d, adc_clock %d => 0x%x\n",
Harvey Harrison271ddbf2008-04-08 23:20:00 -0300155 __func__, bw, adc_clock, *nominal_rate);
Antti Palosaarif7f57772007-02-10 10:19:11 -0300156}
157
Chris Pascoe794604c2007-11-19 03:55:45 -0300158static void zl10353_calc_input_freq(struct dvb_frontend *fe,
159 u16 *input_freq)
160{
161 struct zl10353_state *state = fe->demodulator_priv;
Chris Pascoea1dcd9d2007-11-20 08:17:54 -0300162 u32 adc_clock = 450560; /* 45.056 MHz */
163 int if2 = 361667; /* 36.1667 MHz */
Chris Pascoe794604c2007-11-19 03:55:45 -0300164 int ife;
165 u64 value;
166
167 if (state->config.adc_clock)
168 adc_clock = state->config.adc_clock;
169 if (state->config.if2)
170 if2 = state->config.if2;
171
172 if (adc_clock >= if2 * 2)
173 ife = if2;
174 else {
175 ife = adc_clock - (if2 % adc_clock);
176 if (ife > adc_clock / 2)
177 ife = adc_clock - ife;
178 }
Chris Pascoea1dcd9d2007-11-20 08:17:54 -0300179 value = (u64)65536 * ife + adc_clock / 2;
Chris Pascoe794604c2007-11-19 03:55:45 -0300180 do_div(value, adc_clock);
181 *input_freq = -value;
182
183 dprintk("%s: if2 %d, ife %d, adc_clock %d => %d / 0x%x\n",
Harvey Harrison271ddbf2008-04-08 23:20:00 -0300184 __func__, if2, ife, adc_clock, -(int)value, *input_freq);
Chris Pascoe794604c2007-11-19 03:55:45 -0300185}
186
Chris Pascoe780dfef2006-02-28 08:34:59 -0300187static int zl10353_sleep(struct dvb_frontend *fe)
188{
189 static u8 zl10353_softdown[] = { 0x50, 0x0C, 0x44 };
190
191 zl10353_write(fe, zl10353_softdown, sizeof(zl10353_softdown));
192 return 0;
193}
194
195static int zl10353_set_parameters(struct dvb_frontend *fe,
196 struct dvb_frontend_parameters *param)
197{
Andrew de Quincey8dec0732006-04-18 17:47:12 -0300198 struct zl10353_state *state = fe->demodulator_priv;
Chris Pascoe794604c2007-11-19 03:55:45 -0300199 u16 nominal_rate, input_freq;
Chris Pascoebc514712007-12-15 03:24:00 -0300200 u8 pllbuf[6] = { 0x67 }, acq_ctl = 0;
201 u16 tps = 0;
202 struct dvb_ofdm_parameters *op = &param->u.ofdm;
Chris Pascoe780dfef2006-02-28 08:34:59 -0300203
Chris Pascoebc514712007-12-15 03:24:00 -0300204 zl10353_single_write(fe, RESET, 0x80);
Chris Pascoe780dfef2006-02-28 08:34:59 -0300205 udelay(200);
206 zl10353_single_write(fe, 0xEA, 0x01);
207 udelay(200);
208 zl10353_single_write(fe, 0xEA, 0x00);
209
Chris Pascoebc514712007-12-15 03:24:00 -0300210 zl10353_single_write(fe, AGC_TARGET, 0x28);
Antti Palosaarif7f57772007-02-10 10:19:11 -0300211
Chris Pascoebc514712007-12-15 03:24:00 -0300212 if (op->transmission_mode != TRANSMISSION_MODE_AUTO)
213 acq_ctl |= (1 << 0);
214 if (op->guard_interval != GUARD_INTERVAL_AUTO)
215 acq_ctl |= (1 << 1);
216 zl10353_single_write(fe, ACQ_CTL, acq_ctl);
217
218 switch (op->bandwidth) {
219 case BANDWIDTH_6_MHZ:
220 /* These are extrapolated from the 7 and 8MHz values */
221 zl10353_single_write(fe, MCLK_RATIO, 0x97);
222 zl10353_single_write(fe, 0x64, 0x34);
Markus Rechbergera9dbe5d2008-10-24 12:15:08 -0300223 zl10353_single_write(fe, 0xcc, 0xdd);
Chris Pascoebc514712007-12-15 03:24:00 -0300224 break;
225 case BANDWIDTH_7_MHZ:
226 zl10353_single_write(fe, MCLK_RATIO, 0x86);
227 zl10353_single_write(fe, 0x64, 0x35);
Markus Rechbergera9dbe5d2008-10-24 12:15:08 -0300228 zl10353_single_write(fe, 0xcc, 0x73);
Chris Pascoebc514712007-12-15 03:24:00 -0300229 break;
230 case BANDWIDTH_8_MHZ:
231 default:
232 zl10353_single_write(fe, MCLK_RATIO, 0x75);
233 zl10353_single_write(fe, 0x64, 0x36);
Markus Rechbergera9dbe5d2008-10-24 12:15:08 -0300234 zl10353_single_write(fe, 0xcc, 0x73);
Chris Pascoebc514712007-12-15 03:24:00 -0300235 }
236
237 zl10353_calc_nominal_rate(fe, op->bandwidth, &nominal_rate);
Antti Palosaarif7f57772007-02-10 10:19:11 -0300238 zl10353_single_write(fe, TRL_NOMINAL_RATE_1, msb(nominal_rate));
239 zl10353_single_write(fe, TRL_NOMINAL_RATE_0, lsb(nominal_rate));
Chris Pascoebc514712007-12-15 03:24:00 -0300240 state->bandwidth = op->bandwidth;
Antti Palosaarif7f57772007-02-10 10:19:11 -0300241
Chris Pascoe794604c2007-11-19 03:55:45 -0300242 zl10353_calc_input_freq(fe, &input_freq);
243 zl10353_single_write(fe, INPUT_FREQ_1, msb(input_freq));
244 zl10353_single_write(fe, INPUT_FREQ_0, lsb(input_freq));
245
Chris Pascoebc514712007-12-15 03:24:00 -0300246 /* Hint at TPS settings */
247 switch (op->code_rate_HP) {
248 case FEC_2_3:
249 tps |= (1 << 7);
250 break;
251 case FEC_3_4:
252 tps |= (2 << 7);
253 break;
254 case FEC_5_6:
255 tps |= (3 << 7);
256 break;
257 case FEC_7_8:
258 tps |= (4 << 7);
259 break;
260 case FEC_1_2:
261 case FEC_AUTO:
262 break;
263 default:
264 return -EINVAL;
265 }
266
267 switch (op->code_rate_LP) {
268 case FEC_2_3:
269 tps |= (1 << 4);
270 break;
271 case FEC_3_4:
272 tps |= (2 << 4);
273 break;
274 case FEC_5_6:
275 tps |= (3 << 4);
276 break;
277 case FEC_7_8:
278 tps |= (4 << 4);
279 break;
280 case FEC_1_2:
281 case FEC_AUTO:
282 break;
283 case FEC_NONE:
284 if (op->hierarchy_information == HIERARCHY_AUTO ||
285 op->hierarchy_information == HIERARCHY_NONE)
286 break;
287 default:
288 return -EINVAL;
289 }
290
291 switch (op->constellation) {
292 case QPSK:
293 break;
294 case QAM_AUTO:
295 case QAM_16:
296 tps |= (1 << 13);
297 break;
298 case QAM_64:
299 tps |= (2 << 13);
300 break;
301 default:
302 return -EINVAL;
303 }
304
305 switch (op->transmission_mode) {
306 case TRANSMISSION_MODE_2K:
307 case TRANSMISSION_MODE_AUTO:
308 break;
309 case TRANSMISSION_MODE_8K:
310 tps |= (1 << 0);
311 break;
312 default:
313 return -EINVAL;
314 }
315
316 switch (op->guard_interval) {
317 case GUARD_INTERVAL_1_32:
318 case GUARD_INTERVAL_AUTO:
319 break;
320 case GUARD_INTERVAL_1_16:
321 tps |= (1 << 2);
322 break;
323 case GUARD_INTERVAL_1_8:
324 tps |= (2 << 2);
325 break;
326 case GUARD_INTERVAL_1_4:
327 tps |= (3 << 2);
328 break;
329 default:
330 return -EINVAL;
331 }
332
333 switch (op->hierarchy_information) {
334 case HIERARCHY_AUTO:
335 case HIERARCHY_NONE:
336 break;
337 case HIERARCHY_1:
338 tps |= (1 << 10);
339 break;
340 case HIERARCHY_2:
341 tps |= (2 << 10);
342 break;
343 case HIERARCHY_4:
344 tps |= (3 << 10);
345 break;
346 default:
347 return -EINVAL;
348 }
349
350 zl10353_single_write(fe, TPS_GIVEN_1, msb(tps));
351 zl10353_single_write(fe, TPS_GIVEN_0, lsb(tps));
352
Antti Palosaari0a11bb82007-02-10 10:19:08 -0300353 if (fe->ops.i2c_gate_ctrl)
354 fe->ops.i2c_gate_ctrl(fe, 0);
Chris Pascoe780dfef2006-02-28 08:34:59 -0300355
Chris Pascoe58d834e2007-11-19 03:32:06 -0300356 /*
357 * If there is no tuner attached to the secondary I2C bus, we call
358 * set_params to program a potential tuner attached somewhere else.
359 * Otherwise, we update the PLL registers via calc_regs.
360 */
Andrew de Quincey8dec0732006-04-18 17:47:12 -0300361 if (state->config.no_tuner) {
Patrick Boettcherdea74862006-05-14 05:01:31 -0300362 if (fe->ops.tuner_ops.set_params) {
363 fe->ops.tuner_ops.set_params(fe, param);
Antti Palosaari0a11bb82007-02-10 10:19:08 -0300364 if (fe->ops.i2c_gate_ctrl)
365 fe->ops.i2c_gate_ctrl(fe, 0);
Andrew de Quincey8dec0732006-04-18 17:47:12 -0300366 }
Chris Pascoe58d834e2007-11-19 03:32:06 -0300367 } else if (fe->ops.tuner_ops.calc_regs) {
368 fe->ops.tuner_ops.calc_regs(fe, param, pllbuf + 1, 5);
Andrew de Quinceye994b8d2006-04-18 17:47:11 -0300369 pllbuf[1] <<= 1;
Chris Pascoe58d834e2007-11-19 03:32:06 -0300370 zl10353_write(fe, pllbuf, sizeof(pllbuf));
Andrew de Quinceye994b8d2006-04-18 17:47:11 -0300371 }
Chris Pascoe780dfef2006-02-28 08:34:59 -0300372
Chris Pascoefc3398d2006-08-10 03:17:42 -0300373 zl10353_single_write(fe, 0x5F, 0x13);
Chris Pascoe58d834e2007-11-19 03:32:06 -0300374
375 /* If no attached tuner or invalid PLL registers, just start the FSM. */
376 if (state->config.no_tuner || fe->ops.tuner_ops.calc_regs == NULL)
377 zl10353_single_write(fe, FSM_GO, 0x01);
378 else
379 zl10353_single_write(fe, TUNER_GO, 0x01);
380
Chris Pascoebc514712007-12-15 03:24:00 -0300381 return 0;
382}
383
384static int zl10353_get_parameters(struct dvb_frontend *fe,
385 struct dvb_frontend_parameters *param)
386{
387 struct zl10353_state *state = fe->demodulator_priv;
388 struct dvb_ofdm_parameters *op = &param->u.ofdm;
389 int s6, s9;
390 u16 tps;
391 static const u8 tps_fec_to_api[8] = {
392 FEC_1_2,
393 FEC_2_3,
394 FEC_3_4,
395 FEC_5_6,
396 FEC_7_8,
397 FEC_AUTO,
398 FEC_AUTO,
399 FEC_AUTO
400 };
401
402 s6 = zl10353_read_register(state, STATUS_6);
403 s9 = zl10353_read_register(state, STATUS_9);
404 if (s6 < 0 || s9 < 0)
405 return -EREMOTEIO;
406 if ((s6 & (1 << 5)) == 0 || (s9 & (1 << 4)) == 0)
407 return -EINVAL; /* no FE or TPS lock */
408
409 tps = zl10353_read_register(state, TPS_RECEIVED_1) << 8 |
410 zl10353_read_register(state, TPS_RECEIVED_0);
411
412 op->code_rate_HP = tps_fec_to_api[(tps >> 7) & 7];
413 op->code_rate_LP = tps_fec_to_api[(tps >> 4) & 7];
414
415 switch ((tps >> 13) & 3) {
416 case 0:
417 op->constellation = QPSK;
418 break;
419 case 1:
420 op->constellation = QAM_16;
421 break;
422 case 2:
423 op->constellation = QAM_64;
424 break;
425 default:
426 op->constellation = QAM_AUTO;
427 break;
428 }
429
430 op->transmission_mode = (tps & 0x01) ? TRANSMISSION_MODE_8K :
431 TRANSMISSION_MODE_2K;
432
433 switch ((tps >> 2) & 3) {
434 case 0:
435 op->guard_interval = GUARD_INTERVAL_1_32;
436 break;
437 case 1:
438 op->guard_interval = GUARD_INTERVAL_1_16;
439 break;
440 case 2:
441 op->guard_interval = GUARD_INTERVAL_1_8;
442 break;
443 case 3:
444 op->guard_interval = GUARD_INTERVAL_1_4;
445 break;
446 default:
447 op->guard_interval = GUARD_INTERVAL_AUTO;
448 break;
449 }
450
451 switch ((tps >> 10) & 7) {
452 case 0:
453 op->hierarchy_information = HIERARCHY_NONE;
454 break;
455 case 1:
456 op->hierarchy_information = HIERARCHY_1;
457 break;
458 case 2:
459 op->hierarchy_information = HIERARCHY_2;
460 break;
461 case 3:
462 op->hierarchy_information = HIERARCHY_4;
463 break;
464 default:
465 op->hierarchy_information = HIERARCHY_AUTO;
466 break;
467 }
468
469 param->frequency = 0;
470 op->bandwidth = state->bandwidth;
471 param->inversion = INVERSION_AUTO;
Chris Pascoe780dfef2006-02-28 08:34:59 -0300472
473 return 0;
474}
475
476static int zl10353_read_status(struct dvb_frontend *fe, fe_status_t *status)
477{
478 struct zl10353_state *state = fe->demodulator_priv;
479 int s6, s7, s8;
480
481 if ((s6 = zl10353_read_register(state, STATUS_6)) < 0)
482 return -EREMOTEIO;
483 if ((s7 = zl10353_read_register(state, STATUS_7)) < 0)
484 return -EREMOTEIO;
485 if ((s8 = zl10353_read_register(state, STATUS_8)) < 0)
486 return -EREMOTEIO;
487
488 *status = 0;
489 if (s6 & (1 << 2))
490 *status |= FE_HAS_CARRIER;
491 if (s6 & (1 << 1))
492 *status |= FE_HAS_VITERBI;
493 if (s6 & (1 << 5))
494 *status |= FE_HAS_LOCK;
495 if (s7 & (1 << 4))
496 *status |= FE_HAS_SYNC;
497 if (s8 & (1 << 6))
498 *status |= FE_HAS_SIGNAL;
499
500 if ((*status & (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) !=
501 (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC))
502 *status &= ~FE_HAS_LOCK;
503
504 return 0;
505}
506
Chris Pascoe67b60aa2007-02-10 10:17:57 -0300507static int zl10353_read_ber(struct dvb_frontend *fe, u32 *ber)
508{
509 struct zl10353_state *state = fe->demodulator_priv;
510
Chris Pascoe6345f0f2007-02-10 10:19:16 -0300511 *ber = zl10353_read_register(state, RS_ERR_CNT_2) << 16 |
512 zl10353_read_register(state, RS_ERR_CNT_1) << 8 |
513 zl10353_read_register(state, RS_ERR_CNT_0);
Chris Pascoe67b60aa2007-02-10 10:17:57 -0300514
515 return 0;
516}
517
518static int zl10353_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
519{
520 struct zl10353_state *state = fe->demodulator_priv;
521
Chris Pascoe6345f0f2007-02-10 10:19:16 -0300522 u16 signal = zl10353_read_register(state, AGC_GAIN_1) << 10 |
523 zl10353_read_register(state, AGC_GAIN_0) << 2 | 3;
Chris Pascoe67b60aa2007-02-10 10:17:57 -0300524
525 *strength = ~signal;
526
527 return 0;
528}
529
Chris Pascoe780dfef2006-02-28 08:34:59 -0300530static int zl10353_read_snr(struct dvb_frontend *fe, u16 *snr)
531{
532 struct zl10353_state *state = fe->demodulator_priv;
533 u8 _snr;
534
535 if (debug_regs)
536 zl10353_dump_regs(fe);
537
538 _snr = zl10353_read_register(state, SNR);
539 *snr = (_snr << 8) | _snr;
540
541 return 0;
542}
543
Chris Pascoe67b60aa2007-02-10 10:17:57 -0300544static int zl10353_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
545{
546 struct zl10353_state *state = fe->demodulator_priv;
547
Chris Pascoe6345f0f2007-02-10 10:19:16 -0300548 *ucblocks = zl10353_read_register(state, RS_UBC_1) << 8 |
549 zl10353_read_register(state, RS_UBC_0);
Chris Pascoe67b60aa2007-02-10 10:17:57 -0300550
551 return 0;
552}
553
Chris Pascoe780dfef2006-02-28 08:34:59 -0300554static int zl10353_get_tune_settings(struct dvb_frontend *fe,
555 struct dvb_frontend_tune_settings
556 *fe_tune_settings)
557{
558 fe_tune_settings->min_delay_ms = 1000;
559 fe_tune_settings->step_size = 0;
560 fe_tune_settings->max_drift = 0;
561
562 return 0;
563}
564
565static int zl10353_init(struct dvb_frontend *fe)
566{
567 struct zl10353_state *state = fe->demodulator_priv;
568 u8 zl10353_reset_attach[6] = { 0x50, 0x03, 0x64, 0x46, 0x15, 0x0F };
569 int rc = 0;
570
571 if (debug_regs)
572 zl10353_dump_regs(fe);
Chris Pascoe8fb95782006-08-10 03:17:16 -0300573 if (state->config.parallel_ts)
574 zl10353_reset_attach[2] &= ~0x20;
Chris Pascoe780dfef2006-02-28 08:34:59 -0300575
576 /* Do a "hard" reset if not already done */
Chris Pascoe8fb95782006-08-10 03:17:16 -0300577 if (zl10353_read_register(state, 0x50) != zl10353_reset_attach[1] ||
578 zl10353_read_register(state, 0x51) != zl10353_reset_attach[2]) {
Chris Pascoe780dfef2006-02-28 08:34:59 -0300579 rc = zl10353_write(fe, zl10353_reset_attach,
580 sizeof(zl10353_reset_attach));
581 if (debug_regs)
582 zl10353_dump_regs(fe);
583 }
584
585 return 0;
586}
587
Antti Palosaari0a11bb82007-02-10 10:19:08 -0300588static int zl10353_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
589{
Dmitri Belimov899a6f62008-12-23 03:50:09 -0300590 struct zl10353_state *state = fe->demodulator_priv;
Antti Palosaari0a11bb82007-02-10 10:19:08 -0300591 u8 val = 0x0a;
592
Dmitri Belimov899a6f62008-12-23 03:50:09 -0300593 if (state->config.no_tuner) {
594 /* No tuner attached to the internal I2C bus */
595 /* If set enable I2C bridge, the main I2C bus stopped hardly */
596 return 0;
597 }
598
Antti Palosaari0a11bb82007-02-10 10:19:08 -0300599 if (enable)
600 val |= 0x10;
601
602 return zl10353_single_write(fe, 0x62, val);
603}
604
Chris Pascoe780dfef2006-02-28 08:34:59 -0300605static void zl10353_release(struct dvb_frontend *fe)
606{
607 struct zl10353_state *state = fe->demodulator_priv;
Chris Pascoe780dfef2006-02-28 08:34:59 -0300608 kfree(state);
609}
610
611static struct dvb_frontend_ops zl10353_ops;
612
613struct dvb_frontend *zl10353_attach(const struct zl10353_config *config,
614 struct i2c_adapter *i2c)
615{
616 struct zl10353_state *state = NULL;
617
618 /* allocate memory for the internal state */
619 state = kzalloc(sizeof(struct zl10353_state), GFP_KERNEL);
620 if (state == NULL)
621 goto error;
622
623 /* setup the state */
624 state->i2c = i2c;
625 memcpy(&state->config, config, sizeof(struct zl10353_config));
Chris Pascoe780dfef2006-02-28 08:34:59 -0300626
627 /* check if the demod is there */
628 if (zl10353_read_register(state, CHIP_ID) != ID_ZL10353)
629 goto error;
630
631 /* create dvb_frontend */
Patrick Boettcherdea74862006-05-14 05:01:31 -0300632 memcpy(&state->frontend.ops, &zl10353_ops, sizeof(struct dvb_frontend_ops));
Chris Pascoe780dfef2006-02-28 08:34:59 -0300633 state->frontend.demodulator_priv = state;
634
635 return &state->frontend;
636error:
637 kfree(state);
638 return NULL;
639}
640
641static struct dvb_frontend_ops zl10353_ops = {
642
643 .info = {
644 .name = "Zarlink ZL10353 DVB-T",
645 .type = FE_OFDM,
646 .frequency_min = 174000000,
647 .frequency_max = 862000000,
648 .frequency_stepsize = 166667,
649 .frequency_tolerance = 0,
650 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 |
651 FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 |
652 FE_CAN_FEC_AUTO |
653 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
654 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
655 FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER |
656 FE_CAN_MUTE_TS
657 },
658
659 .release = zl10353_release,
660
661 .init = zl10353_init,
662 .sleep = zl10353_sleep,
Antti Palosaari0a11bb82007-02-10 10:19:08 -0300663 .i2c_gate_ctrl = zl10353_i2c_gate_ctrl,
Andrew de Quinceyc10d14d2006-08-08 09:10:08 -0300664 .write = zl10353_write,
Chris Pascoe780dfef2006-02-28 08:34:59 -0300665
666 .set_frontend = zl10353_set_parameters,
Chris Pascoebc514712007-12-15 03:24:00 -0300667 .get_frontend = zl10353_get_parameters,
Chris Pascoe780dfef2006-02-28 08:34:59 -0300668 .get_tune_settings = zl10353_get_tune_settings,
669
670 .read_status = zl10353_read_status,
Chris Pascoe67b60aa2007-02-10 10:17:57 -0300671 .read_ber = zl10353_read_ber,
672 .read_signal_strength = zl10353_read_signal_strength,
Chris Pascoe780dfef2006-02-28 08:34:59 -0300673 .read_snr = zl10353_read_snr,
Chris Pascoe67b60aa2007-02-10 10:17:57 -0300674 .read_ucblocks = zl10353_read_ucblocks,
Chris Pascoe780dfef2006-02-28 08:34:59 -0300675};
676
Antti Palosaarif7f57772007-02-10 10:19:11 -0300677module_param(debug, int, 0644);
678MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
679
Chris Pascoe780dfef2006-02-28 08:34:59 -0300680module_param(debug_regs, int, 0644);
681MODULE_PARM_DESC(debug_regs, "Turn on/off frontend register dumps (default:off).");
682
683MODULE_DESCRIPTION("Zarlink ZL10353 DVB-T demodulator driver");
684MODULE_AUTHOR("Chris Pascoe");
685MODULE_LICENSE("GPL");
686
687EXPORT_SYMBOL(zl10353_attach);