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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 NXP TDA10048HN DVB OFDM demodulator driver
4
5 Copyright (C) 2009 Steven Toth <stoth@kernellabs.com>
6
7
8*/
9
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/module.h>
13#include <linux/string.h>
14#include <linux/slab.h>
15#include <linux/delay.h>
16#include <linux/math64.h>
17#include <asm/div64.h>
18#include <media/dvb_frontend.h>
19#include <linux/int_log.h>
20#include "tda10048.h"
21
22#define TDA10048_DEFAULT_FIRMWARE "dvb-fe-tda10048-1.0.fw"
23#define TDA10048_DEFAULT_FIRMWARE_SIZE 24878
24
25/* Register name definitions */
26#define TDA10048_IDENTITY 0x00
27#define TDA10048_VERSION 0x01
28#define TDA10048_DSP_CODE_CPT 0x0C
29#define TDA10048_DSP_CODE_IN 0x0E
30#define TDA10048_IN_CONF1 0x10
31#define TDA10048_IN_CONF2 0x11
32#define TDA10048_IN_CONF3 0x12
33#define TDA10048_OUT_CONF1 0x14
34#define TDA10048_OUT_CONF2 0x15
35#define TDA10048_OUT_CONF3 0x16
36#define TDA10048_AUTO 0x18
37#define TDA10048_SYNC_STATUS 0x1A
38#define TDA10048_CONF_C4_1 0x1E
39#define TDA10048_CONF_C4_2 0x1F
40#define TDA10048_CODE_IN_RAM 0x20
41#define TDA10048_CHANNEL_INFO1_R 0x22
42#define TDA10048_CHANNEL_INFO2_R 0x23
43#define TDA10048_CHANNEL_INFO1 0x24
44#define TDA10048_CHANNEL_INFO2 0x25
45#define TDA10048_TIME_ERROR_R 0x26
46#define TDA10048_TIME_ERROR 0x27
47#define TDA10048_FREQ_ERROR_LSB_R 0x28
48#define TDA10048_FREQ_ERROR_MSB_R 0x29
49#define TDA10048_FREQ_ERROR_LSB 0x2A
50#define TDA10048_FREQ_ERROR_MSB 0x2B
51#define TDA10048_IT_SEL 0x30
52#define TDA10048_IT_STAT 0x32
53#define TDA10048_DSP_AD_LSB 0x3C
54#define TDA10048_DSP_AD_MSB 0x3D
55#define TDA10048_DSP_REG_LSB 0x3E
56#define TDA10048_DSP_REG_MSB 0x3F
57#define TDA10048_CONF_TRISTATE1 0x44
58#define TDA10048_CONF_TRISTATE2 0x45
59#define TDA10048_CONF_POLARITY 0x46
60#define TDA10048_GPIO_SP_DS0 0x48
61#define TDA10048_GPIO_SP_DS1 0x49
62#define TDA10048_GPIO_SP_DS2 0x4A
63#define TDA10048_GPIO_SP_DS3 0x4B
64#define TDA10048_GPIO_OUT_SEL 0x4C
65#define TDA10048_GPIO_SELECT 0x4D
66#define TDA10048_IC_MODE 0x4E
67#define TDA10048_CONF_XO 0x50
68#define TDA10048_CONF_PLL1 0x51
69#define TDA10048_CONF_PLL2 0x52
70#define TDA10048_CONF_PLL3 0x53
71#define TDA10048_CONF_ADC 0x54
72#define TDA10048_CONF_ADC_2 0x55
73#define TDA10048_CONF_C1_1 0x60
74#define TDA10048_CONF_C1_3 0x62
75#define TDA10048_AGC_CONF 0x70
76#define TDA10048_AGC_THRESHOLD_LSB 0x72
77#define TDA10048_AGC_THRESHOLD_MSB 0x73
78#define TDA10048_AGC_RENORM 0x74
79#define TDA10048_AGC_GAINS 0x76
80#define TDA10048_AGC_TUN_MIN 0x78
81#define TDA10048_AGC_TUN_MAX 0x79
82#define TDA10048_AGC_IF_MIN 0x7A
83#define TDA10048_AGC_IF_MAX 0x7B
84#define TDA10048_AGC_TUN_LEVEL 0x7E
85#define TDA10048_AGC_IF_LEVEL 0x7F
86#define TDA10048_DIG_AGC_LEVEL 0x81
87#define TDA10048_FREQ_PHY2_LSB 0x86
88#define TDA10048_FREQ_PHY2_MSB 0x87
89#define TDA10048_TIME_INVWREF_LSB 0x88
90#define TDA10048_TIME_INVWREF_MSB 0x89
91#define TDA10048_TIME_WREF_LSB 0x8A
92#define TDA10048_TIME_WREF_MID1 0x8B
93#define TDA10048_TIME_WREF_MID2 0x8C
94#define TDA10048_TIME_WREF_MSB 0x8D
95#define TDA10048_NP_OUT 0xA2
96#define TDA10048_CELL_ID_LSB 0xA4
97#define TDA10048_CELL_ID_MSB 0xA5
98#define TDA10048_EXTTPS_ODD 0xAA
99#define TDA10048_EXTTPS_EVEN 0xAB
100#define TDA10048_TPS_LENGTH 0xAC
101#define TDA10048_FREE_REG_1 0xB2
102#define TDA10048_FREE_REG_2 0xB3
103#define TDA10048_CONF_C3_1 0xC0
104#define TDA10048_CVBER_CTRL 0xC2
105#define TDA10048_CBER_NMAX_LSB 0xC4
106#define TDA10048_CBER_NMAX_MSB 0xC5
107#define TDA10048_CBER_LSB 0xC6
108#define TDA10048_CBER_MSB 0xC7
109#define TDA10048_VBER_LSB 0xC8
110#define TDA10048_VBER_MID 0xC9
111#define TDA10048_VBER_MSB 0xCA
112#define TDA10048_CVBER_LUT 0xCC
113#define TDA10048_UNCOR_CTRL 0xCD
114#define TDA10048_UNCOR_CPT_LSB 0xCE
115#define TDA10048_UNCOR_CPT_MSB 0xCF
116#define TDA10048_SOFT_IT_C3 0xD6
117#define TDA10048_CONF_TS2 0xE0
118#define TDA10048_CONF_TS1 0xE1
119
120static unsigned int debug;
121
122#define dprintk(level, fmt, arg...)\
123 do { if (debug >= level)\
124 printk(KERN_DEBUG "tda10048: " fmt, ## arg);\
125 } while (0)
126
127struct tda10048_state {
128
129 struct i2c_adapter *i2c;
130
131 /* We'll cache and update the attach config settings */
132 struct tda10048_config config;
133 struct dvb_frontend frontend;
134
135 int fwloaded;
136
137 u32 freq_if_hz;
138 u32 xtal_hz;
139 u32 pll_mfactor;
140 u32 pll_nfactor;
141 u32 pll_pfactor;
142 u32 sample_freq;
143
144 u32 bandwidth;
145};
146
147static struct init_tab {
148 u8 reg;
149 u16 data;
150} init_tab[] = {
151 { TDA10048_CONF_PLL1, 0x08 },
152 { TDA10048_CONF_ADC_2, 0x00 },
153 { TDA10048_CONF_C4_1, 0x00 },
154 { TDA10048_CONF_PLL1, 0x0f },
155 { TDA10048_CONF_PLL2, 0x0a },
156 { TDA10048_CONF_PLL3, 0x43 },
157 { TDA10048_FREQ_PHY2_LSB, 0x02 },
158 { TDA10048_FREQ_PHY2_MSB, 0x0a },
159 { TDA10048_TIME_WREF_LSB, 0xbd },
160 { TDA10048_TIME_WREF_MID1, 0xe4 },
161 { TDA10048_TIME_WREF_MID2, 0xa8 },
162 { TDA10048_TIME_WREF_MSB, 0x02 },
163 { TDA10048_TIME_INVWREF_LSB, 0x04 },
164 { TDA10048_TIME_INVWREF_MSB, 0x06 },
165 { TDA10048_CONF_C4_1, 0x00 },
166 { TDA10048_CONF_C1_1, 0xa8 },
167 { TDA10048_AGC_CONF, 0x16 },
168 { TDA10048_CONF_C1_3, 0x0b },
169 { TDA10048_AGC_TUN_MIN, 0x00 },
170 { TDA10048_AGC_TUN_MAX, 0xff },
171 { TDA10048_AGC_IF_MIN, 0x00 },
172 { TDA10048_AGC_IF_MAX, 0xff },
173 { TDA10048_AGC_THRESHOLD_MSB, 0x00 },
174 { TDA10048_AGC_THRESHOLD_LSB, 0x70 },
175 { TDA10048_CVBER_CTRL, 0x38 },
176 { TDA10048_AGC_GAINS, 0x12 },
177 { TDA10048_CONF_XO, 0x00 },
178 { TDA10048_CONF_TS1, 0x07 },
179 { TDA10048_IC_MODE, 0x00 },
180 { TDA10048_CONF_TS2, 0xc0 },
181 { TDA10048_CONF_TRISTATE1, 0x21 },
182 { TDA10048_CONF_TRISTATE2, 0x00 },
183 { TDA10048_CONF_POLARITY, 0x00 },
184 { TDA10048_CONF_C4_2, 0x04 },
185 { TDA10048_CONF_ADC, 0x60 },
186 { TDA10048_CONF_ADC_2, 0x10 },
187 { TDA10048_CONF_ADC, 0x60 },
188 { TDA10048_CONF_ADC_2, 0x00 },
189 { TDA10048_CONF_C1_1, 0xa8 },
190 { TDA10048_UNCOR_CTRL, 0x00 },
191 { TDA10048_CONF_C4_2, 0x04 },
192};
193
194static struct pll_tab {
195 u32 clk_freq_khz;
196 u32 if_freq_khz;
197} pll_tab[] = {
198 { TDA10048_CLK_4000, TDA10048_IF_36130 },
199 { TDA10048_CLK_16000, TDA10048_IF_3300 },
200 { TDA10048_CLK_16000, TDA10048_IF_3500 },
201 { TDA10048_CLK_16000, TDA10048_IF_3800 },
202 { TDA10048_CLK_16000, TDA10048_IF_4000 },
203 { TDA10048_CLK_16000, TDA10048_IF_4300 },
204 { TDA10048_CLK_16000, TDA10048_IF_4500 },
205 { TDA10048_CLK_16000, TDA10048_IF_5000 },
206 { TDA10048_CLK_16000, TDA10048_IF_36130 },
207};
208
209static int tda10048_writereg(struct tda10048_state *state, u8 reg, u8 data)
210{
211 struct tda10048_config *config = &state->config;
212 int ret;
213 u8 buf[] = { reg, data };
214 struct i2c_msg msg = {
215 .addr = config->demod_address,
216 .flags = 0, .buf = buf, .len = 2 };
217
218 dprintk(2, "%s(reg = 0x%02x, data = 0x%02x)\n", __func__, reg, data);
219
220 ret = i2c_transfer(state->i2c, &msg, 1);
221
222 if (ret != 1)
223 printk("%s: writereg error (ret == %i)\n", __func__, ret);
224
225 return (ret != 1) ? -1 : 0;
226}
227
228static u8 tda10048_readreg(struct tda10048_state *state, u8 reg)
229{
230 struct tda10048_config *config = &state->config;
231 int ret;
232 u8 b0[] = { reg };
233 u8 b1[] = { 0 };
234 struct i2c_msg msg[] = {
235 { .addr = config->demod_address,
236 .flags = 0, .buf = b0, .len = 1 },
237 { .addr = config->demod_address,
238 .flags = I2C_M_RD, .buf = b1, .len = 1 } };
239
240 dprintk(2, "%s(reg = 0x%02x)\n", __func__, reg);
241
242 ret = i2c_transfer(state->i2c, msg, 2);
243
244 if (ret != 2)
245 printk(KERN_ERR "%s: readreg error (ret == %i)\n",
246 __func__, ret);
247
248 return b1[0];
249}
250
251static int tda10048_writeregbulk(struct tda10048_state *state, u8 reg,
252 const u8 *data, u16 len)
253{
254 struct tda10048_config *config = &state->config;
255 int ret = -EREMOTEIO;
256 struct i2c_msg msg;
257 u8 *buf;
258
259 dprintk(2, "%s(%d, ?, len = %d)\n", __func__, reg, len);
260
261 buf = kmalloc(len + 1, GFP_KERNEL);
262 if (buf == NULL) {
263 ret = -ENOMEM;
264 goto error;
265 }
266
267 *buf = reg;
268 memcpy(buf + 1, data, len);
269
270 msg.addr = config->demod_address;
271 msg.flags = 0;
272 msg.buf = buf;
273 msg.len = len + 1;
274
275 dprintk(2, "%s(): write len = %d\n",
276 __func__, msg.len);
277
278 ret = i2c_transfer(state->i2c, &msg, 1);
279 if (ret != 1) {
280 printk(KERN_ERR "%s(): writereg error err %i\n",
281 __func__, ret);
282 ret = -EREMOTEIO;
283 }
284
285error:
286 kfree(buf);
287
288 return ret;
289}
290
291static int tda10048_set_phy2(struct dvb_frontend *fe, u32 sample_freq_hz,
292 u32 if_hz)
293{
294 struct tda10048_state *state = fe->demodulator_priv;
295 u64 t;
296
297 dprintk(1, "%s()\n", __func__);
298
299 if (sample_freq_hz == 0)
300 return -EINVAL;
301
302 if (if_hz < (sample_freq_hz / 2)) {
303 /* PHY2 = (if2/fs) * 2^15 */
304 t = if_hz;
305 t *= 10;
306 t *= 32768;
307 do_div(t, sample_freq_hz);
308 t += 5;
309 do_div(t, 10);
310 } else {
311 /* PHY2 = ((IF1-fs)/fs) * 2^15 */
312 t = sample_freq_hz - if_hz;
313 t *= 10;
314 t *= 32768;
315 do_div(t, sample_freq_hz);
316 t += 5;
317 do_div(t, 10);
318 t = ~t + 1;
319 }
320
321 tda10048_writereg(state, TDA10048_FREQ_PHY2_LSB, (u8)t);
322 tda10048_writereg(state, TDA10048_FREQ_PHY2_MSB, (u8)(t >> 8));
323
324 return 0;
325}
326
327static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz,
328 u32 bw)
329{
330 struct tda10048_state *state = fe->demodulator_priv;
331 u64 t, z;
332
333 dprintk(1, "%s()\n", __func__);
334
335 if (sample_freq_hz == 0)
336 return -EINVAL;
337
338 /* WREF = (B / (7 * fs)) * 2^31 */
339 t = bw * 10;
340 /* avoid warning: this decimal constant is unsigned only in ISO C90 */
341 /* t *= 2147483648 on 32bit platforms */
342 t *= (2048 * 1024);
343 t *= 1024;
344 z = 7 * sample_freq_hz;
345 do_div(t, z);
346 t += 5;
347 do_div(t, 10);
348
349 tda10048_writereg(state, TDA10048_TIME_WREF_LSB, (u8)t);
350 tda10048_writereg(state, TDA10048_TIME_WREF_MID1, (u8)(t >> 8));
351 tda10048_writereg(state, TDA10048_TIME_WREF_MID2, (u8)(t >> 16));
352 tda10048_writereg(state, TDA10048_TIME_WREF_MSB, (u8)(t >> 24));
353
354 return 0;
355}
356
357static int tda10048_set_invwref(struct dvb_frontend *fe, u32 sample_freq_hz,
358 u32 bw)
359{
360 struct tda10048_state *state = fe->demodulator_priv;
361 u64 t;
362
363 dprintk(1, "%s()\n", __func__);
364
365 if (sample_freq_hz == 0)
366 return -EINVAL;
367
368 /* INVWREF = ((7 * fs) / B) * 2^5 */
369 t = sample_freq_hz;
370 t *= 7;
371 t *= 32;
372 t *= 10;
373 do_div(t, bw);
374 t += 5;
375 do_div(t, 10);
376
377 tda10048_writereg(state, TDA10048_TIME_INVWREF_LSB, (u8)t);
378 tda10048_writereg(state, TDA10048_TIME_INVWREF_MSB, (u8)(t >> 8));
379
380 return 0;
381}
382
383static int tda10048_set_bandwidth(struct dvb_frontend *fe,
384 u32 bw)
385{
386 struct tda10048_state *state = fe->demodulator_priv;
387 dprintk(1, "%s(bw=%d)\n", __func__, bw);
388
389 /* Bandwidth setting may need to be adjusted */
390 switch (bw) {
391 case 6000000:
392 case 7000000:
393 case 8000000:
394 tda10048_set_wref(fe, state->sample_freq, bw);
395 tda10048_set_invwref(fe, state->sample_freq, bw);
396 break;
397 default:
398 printk(KERN_ERR "%s() invalid bandwidth\n", __func__);
399 return -EINVAL;
400 }
401
402 state->bandwidth = bw;
403
404 return 0;
405}
406
407static int tda10048_set_if(struct dvb_frontend *fe, u32 bw)
408{
409 struct tda10048_state *state = fe->demodulator_priv;
410 struct tda10048_config *config = &state->config;
411 int i;
412 u32 if_freq_khz;
413
414 dprintk(1, "%s(bw = %d)\n", __func__, bw);
415
416 /* based on target bandwidth and clk we calculate pll factors */
417 switch (bw) {
418 case 6000000:
419 if_freq_khz = config->dtv6_if_freq_khz;
420 break;
421 case 7000000:
422 if_freq_khz = config->dtv7_if_freq_khz;
423 break;
424 case 8000000:
425 if_freq_khz = config->dtv8_if_freq_khz;
426 break;
427 default:
428 printk(KERN_ERR "%s() no default\n", __func__);
429 return -EINVAL;
430 }
431
432 for (i = 0; i < ARRAY_SIZE(pll_tab); i++) {
433 if ((pll_tab[i].clk_freq_khz == config->clk_freq_khz) &&
434 (pll_tab[i].if_freq_khz == if_freq_khz)) {
435
436 state->freq_if_hz = pll_tab[i].if_freq_khz * 1000;
437 state->xtal_hz = pll_tab[i].clk_freq_khz * 1000;
438 break;
439 }
440 }
441 if (i == ARRAY_SIZE(pll_tab)) {
442 printk(KERN_ERR "%s() Incorrect attach settings\n",
443 __func__);
444 return -EINVAL;
445 }
446
447 dprintk(1, "- freq_if_hz = %d\n", state->freq_if_hz);
448 dprintk(1, "- xtal_hz = %d\n", state->xtal_hz);
449 dprintk(1, "- pll_mfactor = %d\n", state->pll_mfactor);
450 dprintk(1, "- pll_nfactor = %d\n", state->pll_nfactor);
451 dprintk(1, "- pll_pfactor = %d\n", state->pll_pfactor);
452
453 /* Calculate the sample frequency */
454 state->sample_freq = state->xtal_hz * (state->pll_mfactor + 45);
455 state->sample_freq /= (state->pll_nfactor + 1);
456 state->sample_freq /= (state->pll_pfactor + 4);
457 dprintk(1, "- sample_freq = %d\n", state->sample_freq);
458
459 /* Update the I/F */
460 tda10048_set_phy2(fe, state->sample_freq, state->freq_if_hz);
461
462 return 0;
463}
464
465static int tda10048_firmware_upload(struct dvb_frontend *fe)
466{
467 struct tda10048_state *state = fe->demodulator_priv;
468 struct tda10048_config *config = &state->config;
469 const struct firmware *fw;
470 int ret;
471 int pos = 0;
472 int cnt;
473 u8 wlen = config->fwbulkwritelen;
474
475 if ((wlen != TDA10048_BULKWRITE_200) && (wlen != TDA10048_BULKWRITE_50))
476 wlen = TDA10048_BULKWRITE_200;
477
478 /* request the firmware, this will block and timeout */
479 printk(KERN_INFO "%s: waiting for firmware upload (%s)...\n",
480 __func__,
481 TDA10048_DEFAULT_FIRMWARE);
482
483 ret = request_firmware(&fw, TDA10048_DEFAULT_FIRMWARE,
484 state->i2c->dev.parent);
485 if (ret) {
486 printk(KERN_ERR "%s: Upload failed. (file not found?)\n",
487 __func__);
488 return -EIO;
489 } else {
490 printk(KERN_INFO "%s: firmware read %zu bytes.\n",
491 __func__,
492 fw->size);
493 ret = 0;
494 }
495
496 if (fw->size != TDA10048_DEFAULT_FIRMWARE_SIZE) {
497 printk(KERN_ERR "%s: firmware incorrect size\n", __func__);
498 ret = -EIO;
499 } else {
500 printk(KERN_INFO "%s: firmware uploading\n", __func__);
501
502 /* Soft reset */
503 tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
504 tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
505 & 0xfe);
506 tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
507 tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
508 | 0x01);
509
510 /* Put the demod into host download mode */
511 tda10048_writereg(state, TDA10048_CONF_C4_1,
512 tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xf9);
513
514 /* Boot the DSP */
515 tda10048_writereg(state, TDA10048_CONF_C4_1,
516 tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x08);
517
518 /* Prepare for download */
519 tda10048_writereg(state, TDA10048_DSP_CODE_CPT, 0);
520
521 /* Download the firmware payload */
522 while (pos < fw->size) {
523
524 if ((fw->size - pos) > wlen)
525 cnt = wlen;
526 else
527 cnt = fw->size - pos;
528
529 tda10048_writeregbulk(state, TDA10048_DSP_CODE_IN,
530 &fw->data[pos], cnt);
531
532 pos += cnt;
533 }
534
535 ret = -EIO;
536 /* Wait up to 250ms for the DSP to boot */
537 for (cnt = 0; cnt < 250 ; cnt += 10) {
538
539 msleep(10);
540
541 if (tda10048_readreg(state, TDA10048_SYNC_STATUS)
542 & 0x40) {
543 ret = 0;
544 break;
545 }
546 }
547 }
548
549 release_firmware(fw);
550
551 if (ret == 0) {
552 printk(KERN_INFO "%s: firmware uploaded\n", __func__);
553 state->fwloaded = 1;
554 } else
555 printk(KERN_ERR "%s: firmware upload failed\n", __func__);
556
557 return ret;
558}
559
560static int tda10048_set_inversion(struct dvb_frontend *fe, int inversion)
561{
562 struct tda10048_state *state = fe->demodulator_priv;
563
564 dprintk(1, "%s(%d)\n", __func__, inversion);
565
566 if (inversion == TDA10048_INVERSION_ON)
567 tda10048_writereg(state, TDA10048_CONF_C1_1,
568 tda10048_readreg(state, TDA10048_CONF_C1_1) | 0x20);
569 else
570 tda10048_writereg(state, TDA10048_CONF_C1_1,
571 tda10048_readreg(state, TDA10048_CONF_C1_1) & 0xdf);
572
573 return 0;
574}
575
576/* Retrieve the demod settings */
577static int tda10048_get_tps(struct tda10048_state *state,
578 struct dtv_frontend_properties *p)
579{
580 u8 val;
581
582 /* Make sure the TPS regs are valid */
583 if (!(tda10048_readreg(state, TDA10048_AUTO) & 0x01))
584 return -EAGAIN;
585
586 val = tda10048_readreg(state, TDA10048_OUT_CONF2);
587 switch ((val & 0x60) >> 5) {
588 case 0:
589 p->modulation = QPSK;
590 break;
591 case 1:
592 p->modulation = QAM_16;
593 break;
594 case 2:
595 p->modulation = QAM_64;
596 break;
597 }
598 switch ((val & 0x18) >> 3) {
599 case 0:
600 p->hierarchy = HIERARCHY_NONE;
601 break;
602 case 1:
603 p->hierarchy = HIERARCHY_1;
604 break;
605 case 2:
606 p->hierarchy = HIERARCHY_2;
607 break;
608 case 3:
609 p->hierarchy = HIERARCHY_4;
610 break;
611 }
612 switch (val & 0x07) {
613 case 0:
614 p->code_rate_HP = FEC_1_2;
615 break;
616 case 1:
617 p->code_rate_HP = FEC_2_3;
618 break;
619 case 2:
620 p->code_rate_HP = FEC_3_4;
621 break;
622 case 3:
623 p->code_rate_HP = FEC_5_6;
624 break;
625 case 4:
626 p->code_rate_HP = FEC_7_8;
627 break;
628 }
629
630 val = tda10048_readreg(state, TDA10048_OUT_CONF3);
631 switch (val & 0x07) {
632 case 0:
633 p->code_rate_LP = FEC_1_2;
634 break;
635 case 1:
636 p->code_rate_LP = FEC_2_3;
637 break;
638 case 2:
639 p->code_rate_LP = FEC_3_4;
640 break;
641 case 3:
642 p->code_rate_LP = FEC_5_6;
643 break;
644 case 4:
645 p->code_rate_LP = FEC_7_8;
646 break;
647 }
648
649 val = tda10048_readreg(state, TDA10048_OUT_CONF1);
650 switch ((val & 0x0c) >> 2) {
651 case 0:
652 p->guard_interval = GUARD_INTERVAL_1_32;
653 break;
654 case 1:
655 p->guard_interval = GUARD_INTERVAL_1_16;
656 break;
657 case 2:
658 p->guard_interval = GUARD_INTERVAL_1_8;
659 break;
660 case 3:
661 p->guard_interval = GUARD_INTERVAL_1_4;
662 break;
663 }
664 switch (val & 0x03) {
665 case 0:
666 p->transmission_mode = TRANSMISSION_MODE_2K;
667 break;
668 case 1:
669 p->transmission_mode = TRANSMISSION_MODE_8K;
670 break;
671 }
672
673 return 0;
674}
675
676static int tda10048_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
677{
678 struct tda10048_state *state = fe->demodulator_priv;
679 struct tda10048_config *config = &state->config;
680 dprintk(1, "%s(%d)\n", __func__, enable);
681
682 if (config->disable_gate_access)
683 return 0;
684
685 if (enable)
686 return tda10048_writereg(state, TDA10048_CONF_C4_1,
687 tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x02);
688 else
689 return tda10048_writereg(state, TDA10048_CONF_C4_1,
690 tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xfd);
691}
692
693static int tda10048_output_mode(struct dvb_frontend *fe, int serial)
694{
695 struct tda10048_state *state = fe->demodulator_priv;
696 dprintk(1, "%s(%d)\n", __func__, serial);
697
698 /* Ensure pins are out of tri-state */
699 tda10048_writereg(state, TDA10048_CONF_TRISTATE1, 0x21);
700 tda10048_writereg(state, TDA10048_CONF_TRISTATE2, 0x00);
701
702 if (serial) {
703 tda10048_writereg(state, TDA10048_IC_MODE, 0x80 | 0x20);
704 tda10048_writereg(state, TDA10048_CONF_TS2, 0xc0);
705 } else {
706 tda10048_writereg(state, TDA10048_IC_MODE, 0x00);
707 tda10048_writereg(state, TDA10048_CONF_TS2, 0x01);
708 }
709
710 return 0;
711}
712
713/* Talk to the demod, set the FEC, GUARD, QAM settings etc */
714/* TODO: Support manual tuning with specific params */
715static int tda10048_set_frontend(struct dvb_frontend *fe)
716{
717 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
718 struct tda10048_state *state = fe->demodulator_priv;
719
720 dprintk(1, "%s(frequency=%d)\n", __func__, p->frequency);
721
722 /* Update the I/F pll's if the bandwidth changes */
723 if (p->bandwidth_hz != state->bandwidth) {
724 tda10048_set_if(fe, p->bandwidth_hz);
725 tda10048_set_bandwidth(fe, p->bandwidth_hz);
726 }
727
728 if (fe->ops.tuner_ops.set_params) {
729
730 if (fe->ops.i2c_gate_ctrl)
731 fe->ops.i2c_gate_ctrl(fe, 1);
732
733 fe->ops.tuner_ops.set_params(fe);
734
735 if (fe->ops.i2c_gate_ctrl)
736 fe->ops.i2c_gate_ctrl(fe, 0);
737 }
738
739 /* Enable demod TPS auto detection and begin acquisition */
740 tda10048_writereg(state, TDA10048_AUTO, 0x57);
741 /* trigger cber and vber acquisition */
742 tda10048_writereg(state, TDA10048_CVBER_CTRL, 0x3B);
743
744 return 0;
745}
746
747/* Establish sane defaults and load firmware. */
748static int tda10048_init(struct dvb_frontend *fe)
749{
750 struct tda10048_state *state = fe->demodulator_priv;
751 struct tda10048_config *config = &state->config;
752 int ret = 0, i;
753
754 dprintk(1, "%s()\n", __func__);
755
756 /* PLL */
757 init_tab[4].data = (u8)(state->pll_mfactor);
758 init_tab[5].data = (u8)(state->pll_nfactor) | 0x40;
759
760 /* Apply register defaults */
761 for (i = 0; i < ARRAY_SIZE(init_tab); i++)
762 tda10048_writereg(state, init_tab[i].reg, init_tab[i].data);
763
764 if (state->fwloaded == 0)
765 ret = tda10048_firmware_upload(fe);
766
767 /* Set either serial or parallel */
768 tda10048_output_mode(fe, config->output_mode);
769
770 /* Set inversion */
771 tda10048_set_inversion(fe, config->inversion);
772
773 /* Establish default RF values */
774 tda10048_set_if(fe, 8000000);
775 tda10048_set_bandwidth(fe, 8000000);
776
777 /* Ensure we leave the gate closed */
778 tda10048_i2c_gate_ctrl(fe, 0);
779
780 return ret;
781}
782
783static int tda10048_read_status(struct dvb_frontend *fe, enum fe_status *status)
784{
785 struct tda10048_state *state = fe->demodulator_priv;
786 u8 reg;
787
788 *status = 0;
789
790 reg = tda10048_readreg(state, TDA10048_SYNC_STATUS);
791
792 dprintk(1, "%s() status =0x%02x\n", __func__, reg);
793
794 if (reg & 0x02)
795 *status |= FE_HAS_CARRIER;
796
797 if (reg & 0x04)
798 *status |= FE_HAS_SIGNAL;
799
800 if (reg & 0x08) {
801 *status |= FE_HAS_LOCK;
802 *status |= FE_HAS_VITERBI;
803 *status |= FE_HAS_SYNC;
804 }
805
806 return 0;
807}
808
809static int tda10048_read_ber(struct dvb_frontend *fe, u32 *ber)
810{
811 struct tda10048_state *state = fe->demodulator_priv;
812 static u32 cber_current;
813 u32 cber_nmax;
814 u64 cber_tmp;
815
816 dprintk(1, "%s()\n", __func__);
817
818 /* update cber on interrupt */
819 if (tda10048_readreg(state, TDA10048_SOFT_IT_C3) & 0x01) {
820 cber_tmp = tda10048_readreg(state, TDA10048_CBER_MSB) << 8 |
821 tda10048_readreg(state, TDA10048_CBER_LSB);
822 cber_nmax = tda10048_readreg(state, TDA10048_CBER_NMAX_MSB) << 8 |
823 tda10048_readreg(state, TDA10048_CBER_NMAX_LSB);
824 cber_tmp *= 100000000;
825 cber_tmp *= 2;
826 cber_tmp = div_u64(cber_tmp, (cber_nmax * 32) + 1);
827 cber_current = (u32)cber_tmp;
828 /* retrigger cber acquisition */
829 tda10048_writereg(state, TDA10048_CVBER_CTRL, 0x39);
830 }
831 /* actual cber is (*ber)/1e8 */
832 *ber = cber_current;
833
834 return 0;
835}
836
837static int tda10048_read_signal_strength(struct dvb_frontend *fe,
838 u16 *signal_strength)
839{
840 struct tda10048_state *state = fe->demodulator_priv;
841 u8 v;
842
843 dprintk(1, "%s()\n", __func__);
844
845 *signal_strength = 65535;
846
847 v = tda10048_readreg(state, TDA10048_NP_OUT);
848 if (v > 0)
849 *signal_strength -= (v << 8) | v;
850
851 return 0;
852}
853
854/* SNR lookup table */
855static struct snr_tab {
856 u8 val;
857 u8 data;
858} snr_tab[] = {
859 { 0, 0 },
860 { 1, 246 },
861 { 2, 215 },
862 { 3, 198 },
863 { 4, 185 },
864 { 5, 176 },
865 { 6, 168 },
866 { 7, 161 },
867 { 8, 155 },
868 { 9, 150 },
869 { 10, 146 },
870 { 11, 141 },
871 { 12, 138 },
872 { 13, 134 },
873 { 14, 131 },
874 { 15, 128 },
875 { 16, 125 },
876 { 17, 122 },
877 { 18, 120 },
878 { 19, 118 },
879 { 20, 115 },
880 { 21, 113 },
881 { 22, 111 },
882 { 23, 109 },
883 { 24, 107 },
884 { 25, 106 },
885 { 26, 104 },
886 { 27, 102 },
887 { 28, 101 },
888 { 29, 99 },
889 { 30, 98 },
890 { 31, 96 },
891 { 32, 95 },
892 { 33, 94 },
893 { 34, 92 },
894 { 35, 91 },
895 { 36, 90 },
896 { 37, 89 },
897 { 38, 88 },
898 { 39, 86 },
899 { 40, 85 },
900 { 41, 84 },
901 { 42, 83 },
902 { 43, 82 },
903 { 44, 81 },
904 { 45, 80 },
905 { 46, 79 },
906 { 47, 78 },
907 { 48, 77 },
908 { 49, 76 },
909 { 50, 76 },
910 { 51, 75 },
911 { 52, 74 },
912 { 53, 73 },
913 { 54, 72 },
914 { 56, 71 },
915 { 57, 70 },
916 { 58, 69 },
917 { 60, 68 },
918 { 61, 67 },
919 { 63, 66 },
920 { 64, 65 },
921 { 66, 64 },
922 { 67, 63 },
923 { 68, 62 },
924 { 69, 62 },
925 { 70, 61 },
926 { 72, 60 },
927 { 74, 59 },
928 { 75, 58 },
929 { 77, 57 },
930 { 79, 56 },
931 { 81, 55 },
932 { 83, 54 },
933 { 85, 53 },
934 { 87, 52 },
935 { 89, 51 },
936 { 91, 50 },
937 { 93, 49 },
938 { 95, 48 },
939 { 97, 47 },
940 { 100, 46 },
941 { 102, 45 },
942 { 104, 44 },
943 { 107, 43 },
944 { 109, 42 },
945 { 112, 41 },
946 { 114, 40 },
947 { 117, 39 },
948 { 120, 38 },
949 { 123, 37 },
950 { 125, 36 },
951 { 128, 35 },
952 { 131, 34 },
953 { 134, 33 },
954 { 138, 32 },
955 { 141, 31 },
956 { 144, 30 },
957 { 147, 29 },
958 { 151, 28 },
959 { 154, 27 },
960 { 158, 26 },
961 { 162, 25 },
962 { 165, 24 },
963 { 169, 23 },
964 { 173, 22 },
965 { 177, 21 },
966 { 181, 20 },
967 { 186, 19 },
968 { 190, 18 },
969 { 194, 17 },
970 { 199, 16 },
971 { 204, 15 },
972 { 208, 14 },
973 { 213, 13 },
974 { 218, 12 },
975 { 223, 11 },
976 { 229, 10 },
977 { 234, 9 },
978 { 239, 8 },
979 { 245, 7 },
980 { 251, 6 },
981 { 255, 5 },
982};
983
984static int tda10048_read_snr(struct dvb_frontend *fe, u16 *snr)
985{
986 struct tda10048_state *state = fe->demodulator_priv;
987 u8 v;
988 int i, ret = -EINVAL;
989
990 dprintk(1, "%s()\n", __func__);
991
992 v = tda10048_readreg(state, TDA10048_NP_OUT);
993 for (i = 0; i < ARRAY_SIZE(snr_tab); i++) {
994 if (v <= snr_tab[i].val) {
995 *snr = snr_tab[i].data;
996 ret = 0;
997 break;
998 }
999 }
1000
1001 return ret;
1002}
1003
1004static int tda10048_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
1005{
1006 struct tda10048_state *state = fe->demodulator_priv;
1007
1008 dprintk(1, "%s()\n", __func__);
1009
1010 *ucblocks = tda10048_readreg(state, TDA10048_UNCOR_CPT_MSB) << 8 |
1011 tda10048_readreg(state, TDA10048_UNCOR_CPT_LSB);
1012 /* clear the uncorrected TS packets counter when saturated */
1013 if (*ucblocks == 0xFFFF)
1014 tda10048_writereg(state, TDA10048_UNCOR_CTRL, 0x80);
1015
1016 return 0;
1017}
1018
1019static int tda10048_get_frontend(struct dvb_frontend *fe,
1020 struct dtv_frontend_properties *p)
1021{
1022 struct tda10048_state *state = fe->demodulator_priv;
1023
1024 dprintk(1, "%s()\n", __func__);
1025
1026 p->inversion = tda10048_readreg(state, TDA10048_CONF_C1_1)
1027 & 0x20 ? INVERSION_ON : INVERSION_OFF;
1028
1029 return tda10048_get_tps(state, p);
1030}
1031
1032static int tda10048_get_tune_settings(struct dvb_frontend *fe,
1033 struct dvb_frontend_tune_settings *tune)
1034{
1035 tune->min_delay_ms = 1000;
1036 return 0;
1037}
1038
1039static void tda10048_release(struct dvb_frontend *fe)
1040{
1041 struct tda10048_state *state = fe->demodulator_priv;
1042 dprintk(1, "%s()\n", __func__);
1043 kfree(state);
1044}
1045
1046static void tda10048_establish_defaults(struct dvb_frontend *fe)
1047{
1048 struct tda10048_state *state = fe->demodulator_priv;
1049 struct tda10048_config *config = &state->config;
1050
1051 /* Validate/default the config */
1052 if (config->dtv6_if_freq_khz == 0) {
1053 config->dtv6_if_freq_khz = TDA10048_IF_4300;
1054 printk(KERN_WARNING "%s() tda10048_config.dtv6_if_freq_khz is not set (defaulting to %d)\n",
1055 __func__,
1056 config->dtv6_if_freq_khz);
1057 }
1058
1059 if (config->dtv7_if_freq_khz == 0) {
1060 config->dtv7_if_freq_khz = TDA10048_IF_4300;
1061 printk(KERN_WARNING "%s() tda10048_config.dtv7_if_freq_khz is not set (defaulting to %d)\n",
1062 __func__,
1063 config->dtv7_if_freq_khz);
1064 }
1065
1066 if (config->dtv8_if_freq_khz == 0) {
1067 config->dtv8_if_freq_khz = TDA10048_IF_4300;
1068 printk(KERN_WARNING "%s() tda10048_config.dtv8_if_freq_khz is not set (defaulting to %d)\n",
1069 __func__,
1070 config->dtv8_if_freq_khz);
1071 }
1072
1073 if (config->clk_freq_khz == 0) {
1074 config->clk_freq_khz = TDA10048_CLK_16000;
1075 printk(KERN_WARNING "%s() tda10048_config.clk_freq_khz is not set (defaulting to %d)\n",
1076 __func__,
1077 config->clk_freq_khz);
1078 }
1079}
1080
1081static const struct dvb_frontend_ops tda10048_ops;
1082
1083struct dvb_frontend *tda10048_attach(const struct tda10048_config *config,
1084 struct i2c_adapter *i2c)
1085{
1086 struct tda10048_state *state = NULL;
1087
1088 dprintk(1, "%s()\n", __func__);
1089
1090 /* allocate memory for the internal state */
1091 state = kzalloc(sizeof(struct tda10048_state), GFP_KERNEL);
1092 if (state == NULL)
1093 goto error;
1094
1095 /* setup the state and clone the config */
1096 memcpy(&state->config, config, sizeof(*config));
1097 state->i2c = i2c;
1098 state->fwloaded = config->no_firmware;
1099 state->bandwidth = 8000000;
1100
1101 /* check if the demod is present */
1102 if (tda10048_readreg(state, TDA10048_IDENTITY) != 0x048)
1103 goto error;
1104
1105 /* create dvb_frontend */
1106 memcpy(&state->frontend.ops, &tda10048_ops,
1107 sizeof(struct dvb_frontend_ops));
1108 state->frontend.demodulator_priv = state;
1109
1110 /* set pll */
1111 if (config->set_pll) {
1112 state->pll_mfactor = config->pll_m;
1113 state->pll_nfactor = config->pll_n;
1114 state->pll_pfactor = config->pll_p;
1115 } else {
1116 state->pll_mfactor = 10;
1117 state->pll_nfactor = 3;
1118 state->pll_pfactor = 0;
1119 }
1120
1121 /* Establish any defaults the user didn't pass */
1122 tda10048_establish_defaults(&state->frontend);
1123
1124 /* Set the xtal and freq defaults */
1125 if (tda10048_set_if(&state->frontend, 8000000) != 0)
1126 goto error;
1127
1128 /* Default bandwidth */
1129 if (tda10048_set_bandwidth(&state->frontend, 8000000) != 0)
1130 goto error;
1131
1132 /* Leave the gate closed */
1133 tda10048_i2c_gate_ctrl(&state->frontend, 0);
1134
1135 return &state->frontend;
1136
1137error:
1138 kfree(state);
1139 return NULL;
1140}
1141EXPORT_SYMBOL_GPL(tda10048_attach);
1142
1143static const struct dvb_frontend_ops tda10048_ops = {
1144 .delsys = { SYS_DVBT },
1145 .info = {
1146 .name = "NXP TDA10048HN DVB-T",
1147 .frequency_min_hz = 177 * MHz,
1148 .frequency_max_hz = 858 * MHz,
1149 .frequency_stepsize_hz = 166666,
1150 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1151 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1152 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
1153 FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
1154 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER
1155 },
1156
1157 .release = tda10048_release,
1158 .init = tda10048_init,
1159 .i2c_gate_ctrl = tda10048_i2c_gate_ctrl,
1160 .set_frontend = tda10048_set_frontend,
1161 .get_frontend = tda10048_get_frontend,
1162 .get_tune_settings = tda10048_get_tune_settings,
1163 .read_status = tda10048_read_status,
1164 .read_ber = tda10048_read_ber,
1165 .read_signal_strength = tda10048_read_signal_strength,
1166 .read_snr = tda10048_read_snr,
1167 .read_ucblocks = tda10048_read_ucblocks,
1168};
1169
1170module_param(debug, int, 0644);
1171MODULE_PARM_DESC(debug, "Enable verbose debug messages");
1172
1173MODULE_DESCRIPTION("NXP TDA10048HN DVB-T Demodulator driver");
1174MODULE_AUTHOR("Steven Toth");
1175MODULE_LICENSE("GPL");