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[pohmelfs.git] / drivers / media / dvb / frontends / tda10048.c
blob71fb63299de78414d003f507ebca09f2a2b86bb5
1 /*
2 NXP TDA10048HN DVB OFDM demodulator driver
3
4 Copyright (C) 2009 Steven Toth <stoth@kernellabs.com>
5
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 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19
20 */
21
22 #include <linux/kernel.h>
23 #include <linux/init.h>
24 #include <linux/module.h>
25 #include <linux/string.h>
26 #include <linux/slab.h>
27 #include <linux/delay.h>
28 #include <linux/math64.h>
29 #include <asm/div64.h>
30 #include "dvb_frontend.h"
31 #include "dvb_math.h"
32 #include "tda10048.h"
33
34 #define TDA10048_DEFAULT_FIRMWARE "dvb-fe-tda10048-1.0.fw"
35 #define TDA10048_DEFAULT_FIRMWARE_SIZE 24878
36
37 /* Register name definitions */
38 #define TDA10048_IDENTITY 0x00
39 #define TDA10048_VERSION 0x01
40 #define TDA10048_DSP_CODE_CPT 0x0C
41 #define TDA10048_DSP_CODE_IN 0x0E
42 #define TDA10048_IN_CONF1 0x10
43 #define TDA10048_IN_CONF2 0x11
44 #define TDA10048_IN_CONF3 0x12
45 #define TDA10048_OUT_CONF1 0x14
46 #define TDA10048_OUT_CONF2 0x15
47 #define TDA10048_OUT_CONF3 0x16
48 #define TDA10048_AUTO 0x18
49 #define TDA10048_SYNC_STATUS 0x1A
50 #define TDA10048_CONF_C4_1 0x1E
51 #define TDA10048_CONF_C4_2 0x1F
52 #define TDA10048_CODE_IN_RAM 0x20
53 #define TDA10048_CHANNEL_INFO1_R 0x22
54 #define TDA10048_CHANNEL_INFO2_R 0x23
55 #define TDA10048_CHANNEL_INFO1 0x24
56 #define TDA10048_CHANNEL_INFO2 0x25
57 #define TDA10048_TIME_ERROR_R 0x26
58 #define TDA10048_TIME_ERROR 0x27
59 #define TDA10048_FREQ_ERROR_LSB_R 0x28
60 #define TDA10048_FREQ_ERROR_MSB_R 0x29
61 #define TDA10048_FREQ_ERROR_LSB 0x2A
62 #define TDA10048_FREQ_ERROR_MSB 0x2B
63 #define TDA10048_IT_SEL 0x30
64 #define TDA10048_IT_STAT 0x32
65 #define TDA10048_DSP_AD_LSB 0x3C
66 #define TDA10048_DSP_AD_MSB 0x3D
67 #define TDA10048_DSP_REG_LSB 0x3E
68 #define TDA10048_DSP_REG_MSB 0x3F
69 #define TDA10048_CONF_TRISTATE1 0x44
70 #define TDA10048_CONF_TRISTATE2 0x45
71 #define TDA10048_CONF_POLARITY 0x46
72 #define TDA10048_GPIO_SP_DS0 0x48
73 #define TDA10048_GPIO_SP_DS1 0x49
74 #define TDA10048_GPIO_SP_DS2 0x4A
75 #define TDA10048_GPIO_SP_DS3 0x4B
76 #define TDA10048_GPIO_OUT_SEL 0x4C
77 #define TDA10048_GPIO_SELECT 0x4D
78 #define TDA10048_IC_MODE 0x4E
79 #define TDA10048_CONF_XO 0x50
80 #define TDA10048_CONF_PLL1 0x51
81 #define TDA10048_CONF_PLL2 0x52
82 #define TDA10048_CONF_PLL3 0x53
83 #define TDA10048_CONF_ADC 0x54
84 #define TDA10048_CONF_ADC_2 0x55
85 #define TDA10048_CONF_C1_1 0x60
86 #define TDA10048_CONF_C1_3 0x62
87 #define TDA10048_AGC_CONF 0x70
88 #define TDA10048_AGC_THRESHOLD_LSB 0x72
89 #define TDA10048_AGC_THRESHOLD_MSB 0x73
90 #define TDA10048_AGC_RENORM 0x74
91 #define TDA10048_AGC_GAINS 0x76
92 #define TDA10048_AGC_TUN_MIN 0x78
93 #define TDA10048_AGC_TUN_MAX 0x79
94 #define TDA10048_AGC_IF_MIN 0x7A
95 #define TDA10048_AGC_IF_MAX 0x7B
96 #define TDA10048_AGC_TUN_LEVEL 0x7E
97 #define TDA10048_AGC_IF_LEVEL 0x7F
98 #define TDA10048_DIG_AGC_LEVEL 0x81
99 #define TDA10048_FREQ_PHY2_LSB 0x86
100 #define TDA10048_FREQ_PHY2_MSB 0x87
101 #define TDA10048_TIME_INVWREF_LSB 0x88
102 #define TDA10048_TIME_INVWREF_MSB 0x89
103 #define TDA10048_TIME_WREF_LSB 0x8A
104 #define TDA10048_TIME_WREF_MID1 0x8B
105 #define TDA10048_TIME_WREF_MID2 0x8C
106 #define TDA10048_TIME_WREF_MSB 0x8D
107 #define TDA10048_NP_OUT 0xA2
108 #define TDA10048_CELL_ID_LSB 0xA4
109 #define TDA10048_CELL_ID_MSB 0xA5
110 #define TDA10048_EXTTPS_ODD 0xAA
111 #define TDA10048_EXTTPS_EVEN 0xAB
112 #define TDA10048_TPS_LENGTH 0xAC
113 #define TDA10048_FREE_REG_1 0xB2
114 #define TDA10048_FREE_REG_2 0xB3
115 #define TDA10048_CONF_C3_1 0xC0
116 #define TDA10048_CVBER_CTRL 0xC2
117 #define TDA10048_CBER_NMAX_LSB 0xC4
118 #define TDA10048_CBER_NMAX_MSB 0xC5
119 #define TDA10048_CBER_LSB 0xC6
120 #define TDA10048_CBER_MSB 0xC7
121 #define TDA10048_VBER_LSB 0xC8
122 #define TDA10048_VBER_MID 0xC9
123 #define TDA10048_VBER_MSB 0xCA
124 #define TDA10048_CVBER_LUT 0xCC
125 #define TDA10048_UNCOR_CTRL 0xCD
126 #define TDA10048_UNCOR_CPT_LSB 0xCE
127 #define TDA10048_UNCOR_CPT_MSB 0xCF
128 #define TDA10048_SOFT_IT_C3 0xD6
129 #define TDA10048_CONF_TS2 0xE0
130 #define TDA10048_CONF_TS1 0xE1
131
132 static unsigned int debug;
133
134 #define dprintk(level, fmt, arg...)\
135 do { if (debug >= level)\
136 printk(KERN_DEBUG "tda10048: " fmt, ## arg);\
137 } while (0)
138
139 struct tda10048_state {
140
141 struct i2c_adapter *i2c;
142
143 /* We'll cache and update the attach config settings */
144 struct tda10048_config config;
145 struct dvb_frontend frontend;
146
147 int fwloaded;
148
149 u32 freq_if_hz;
150 u32 xtal_hz;
151 u32 pll_mfactor;
152 u32 pll_nfactor;
153 u32 pll_pfactor;
154 u32 sample_freq;
155
156 u32 bandwidth;
157 };
158
159 static struct init_tab {
160 u8 reg;
161 u16 data;
162 } init_tab[] = {
163 { TDA10048_CONF_PLL1, 0x08 },
164 { TDA10048_CONF_ADC_2, 0x00 },
165 { TDA10048_CONF_C4_1, 0x00 },
166 { TDA10048_CONF_PLL1, 0x0f },
167 { TDA10048_CONF_PLL2, 0x0a },
168 { TDA10048_CONF_PLL3, 0x43 },
169 { TDA10048_FREQ_PHY2_LSB, 0x02 },
170 { TDA10048_FREQ_PHY2_MSB, 0x0a },
171 { TDA10048_TIME_WREF_LSB, 0xbd },
172 { TDA10048_TIME_WREF_MID1, 0xe4 },
173 { TDA10048_TIME_WREF_MID2, 0xa8 },
174 { TDA10048_TIME_WREF_MSB, 0x02 },
175 { TDA10048_TIME_INVWREF_LSB, 0x04 },
176 { TDA10048_TIME_INVWREF_MSB, 0x06 },
177 { TDA10048_CONF_C4_1, 0x00 },
178 { TDA10048_CONF_C1_1, 0xa8 },
179 { TDA10048_AGC_CONF, 0x16 },
180 { TDA10048_CONF_C1_3, 0x0b },
181 { TDA10048_AGC_TUN_MIN, 0x00 },
182 { TDA10048_AGC_TUN_MAX, 0xff },
183 { TDA10048_AGC_IF_MIN, 0x00 },
184 { TDA10048_AGC_IF_MAX, 0xff },
185 { TDA10048_AGC_THRESHOLD_MSB, 0x00 },
186 { TDA10048_AGC_THRESHOLD_LSB, 0x70 },
187 { TDA10048_CVBER_CTRL, 0x38 },
188 { TDA10048_AGC_GAINS, 0x12 },
189 { TDA10048_CONF_XO, 0x00 },
190 { TDA10048_CONF_TS1, 0x07 },
191 { TDA10048_IC_MODE, 0x00 },
192 { TDA10048_CONF_TS2, 0xc0 },
193 { TDA10048_CONF_TRISTATE1, 0x21 },
194 { TDA10048_CONF_TRISTATE2, 0x00 },
195 { TDA10048_CONF_POLARITY, 0x00 },
196 { TDA10048_CONF_C4_2, 0x04 },
197 { TDA10048_CONF_ADC, 0x60 },
198 { TDA10048_CONF_ADC_2, 0x10 },
199 { TDA10048_CONF_ADC, 0x60 },
200 { TDA10048_CONF_ADC_2, 0x00 },
201 { TDA10048_CONF_C1_1, 0xa8 },
202 { TDA10048_UNCOR_CTRL, 0x00 },
203 { TDA10048_CONF_C4_2, 0x04 },
204 };
205
206 static struct pll_tab {
207 u32 clk_freq_khz;
208 u32 if_freq_khz;
209 } pll_tab[] = {
210 { TDA10048_CLK_4000, TDA10048_IF_36130 },
211 { TDA10048_CLK_16000, TDA10048_IF_3300 },
212 { TDA10048_CLK_16000, TDA10048_IF_3500 },
213 { TDA10048_CLK_16000, TDA10048_IF_3800 },
214 { TDA10048_CLK_16000, TDA10048_IF_4000 },
215 { TDA10048_CLK_16000, TDA10048_IF_4300 },
216 { TDA10048_CLK_16000, TDA10048_IF_4500 },
217 { TDA10048_CLK_16000, TDA10048_IF_5000 },
218 { TDA10048_CLK_16000, TDA10048_IF_36130 },
219 };
220
221 static int tda10048_writereg(struct tda10048_state *state, u8 reg, u8 data)
222 {
223 struct tda10048_config *config = &state->config;
224 int ret;
225 u8 buf[] = { reg, data };
226 struct i2c_msg msg = {
227 .addr = config->demod_address,
228 .flags = 0, .buf = buf, .len = 2 };
229
230 dprintk(2, "%s(reg = 0x%02x, data = 0x%02x)\n", __func__, reg, data);
231
232 ret = i2c_transfer(state->i2c, &msg, 1);
233
234 if (ret != 1)
235 printk("%s: writereg error (ret == %i)\n", __func__, ret);
236
237 return (ret != 1) ? -1 : 0;
238 }
239
240 static u8 tda10048_readreg(struct tda10048_state *state, u8 reg)
241 {
242 struct tda10048_config *config = &state->config;
243 int ret;
244 u8 b0[] = { reg };
245 u8 b1[] = { 0 };
246 struct i2c_msg msg[] = {
247 { .addr = config->demod_address,
248 .flags = 0, .buf = b0, .len = 1 },
249 { .addr = config->demod_address,
250 .flags = I2C_M_RD, .buf = b1, .len = 1 } };
251
252 dprintk(2, "%s(reg = 0x%02x)\n", __func__, reg);
253
254 ret = i2c_transfer(state->i2c, msg, 2);
255
256 if (ret != 2)
257 printk(KERN_ERR "%s: readreg error (ret == %i)\n",
258 __func__, ret);
259
260 return b1[0];
261 }
262
263 static int tda10048_writeregbulk(struct tda10048_state *state, u8 reg,
264 const u8 *data, u16 len)
265 {
266 struct tda10048_config *config = &state->config;
267 int ret = -EREMOTEIO;
268 struct i2c_msg msg;
269 u8 *buf;
270
271 dprintk(2, "%s(%d, ?, len = %d)\n", __func__, reg, len);
272
273 buf = kmalloc(len + 1, GFP_KERNEL);
274 if (buf == NULL) {
275 ret = -ENOMEM;
276 goto error;
277 }
278
279 *buf = reg;
280 memcpy(buf + 1, data, len);
281
282 msg.addr = config->demod_address;
283 msg.flags = 0;
284 msg.buf = buf;
285 msg.len = len + 1;
286
287 dprintk(2, "%s(): write len = %d\n",
288 __func__, msg.len);
289
290 ret = i2c_transfer(state->i2c, &msg, 1);
291 if (ret != 1) {
292 printk(KERN_ERR "%s(): writereg error err %i\n",
293 __func__, ret);
294 ret = -EREMOTEIO;
295 }
296
297 error:
298 kfree(buf);
299
300 return ret;
301 }
302
303 static int tda10048_set_phy2(struct dvb_frontend *fe, u32 sample_freq_hz,
304 u32 if_hz)
305 {
306 struct tda10048_state *state = fe->demodulator_priv;
307 u64 t;
308
309 dprintk(1, "%s()\n", __func__);
310
311 if (sample_freq_hz == 0)
312 return -EINVAL;
313
314 if (if_hz < (sample_freq_hz / 2)) {
315 /* PHY2 = (if2/fs) * 2^15 */
316 t = if_hz;
317 t *= 10;
318 t *= 32768;
319 do_div(t, sample_freq_hz);
320 t += 5;
321 do_div(t, 10);
322 } else {
323 /* PHY2 = ((IF1-fs)/fs) * 2^15 */
324 t = sample_freq_hz - if_hz;
325 t *= 10;
326 t *= 32768;
327 do_div(t, sample_freq_hz);
328 t += 5;
329 do_div(t, 10);
330 t = ~t + 1;
331 }
332
333 tda10048_writereg(state, TDA10048_FREQ_PHY2_LSB, (u8)t);
334 tda10048_writereg(state, TDA10048_FREQ_PHY2_MSB, (u8)(t >> 8));
335
336 return 0;
337 }
338
339 static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz,
340 u32 bw)
341 {
342 struct tda10048_state *state = fe->demodulator_priv;
343 u64 t, z;
344
345 dprintk(1, "%s()\n", __func__);
346
347 if (sample_freq_hz == 0)
348 return -EINVAL;
349
350 /* WREF = (B / (7 * fs)) * 2^31 */
351 t = bw * 10;
352 /* avoid warning: this decimal constant is unsigned only in ISO C90 */
353 /* t *= 2147483648 on 32bit platforms */
354 t *= (2048 * 1024);
355 t *= 1024;
356 z = 7 * sample_freq_hz;
357 do_div(t, z);
358 t += 5;
359 do_div(t, 10);
360
361 tda10048_writereg(state, TDA10048_TIME_WREF_LSB, (u8)t);
362 tda10048_writereg(state, TDA10048_TIME_WREF_MID1, (u8)(t >> 8));
363 tda10048_writereg(state, TDA10048_TIME_WREF_MID2, (u8)(t >> 16));
364 tda10048_writereg(state, TDA10048_TIME_WREF_MSB, (u8)(t >> 24));
365
366 return 0;
367 }
368
369 static int tda10048_set_invwref(struct dvb_frontend *fe, u32 sample_freq_hz,
370 u32 bw)
371 {
372 struct tda10048_state *state = fe->demodulator_priv;
373 u64 t;
374
375 dprintk(1, "%s()\n", __func__);
376
377 if (sample_freq_hz == 0)
378 return -EINVAL;
379
380 /* INVWREF = ((7 * fs) / B) * 2^5 */
381 t = sample_freq_hz;
382 t *= 7;
383 t *= 32;
384 t *= 10;
385 do_div(t, bw);
386 t += 5;
387 do_div(t, 10);
388
389 tda10048_writereg(state, TDA10048_TIME_INVWREF_LSB, (u8)t);
390 tda10048_writereg(state, TDA10048_TIME_INVWREF_MSB, (u8)(t >> 8));
391
392 return 0;
393 }
394
395 static int tda10048_set_bandwidth(struct dvb_frontend *fe,
396 u32 bw)
397 {
398 struct tda10048_state *state = fe->demodulator_priv;
399 dprintk(1, "%s(bw=%d)\n", __func__, bw);
400
401 /* Bandwidth setting may need to be adjusted */
402 switch (bw) {
403 case 6000000:
404 case 7000000:
405 case 8000000:
406 tda10048_set_wref(fe, state->sample_freq, bw);
407 tda10048_set_invwref(fe, state->sample_freq, bw);
408 break;
409 default:
410 printk(KERN_ERR "%s() invalid bandwidth\n", __func__);
411 return -EINVAL;
412 }
413
414 state->bandwidth = bw;
415
416 return 0;
417 }
418
419 static int tda10048_set_if(struct dvb_frontend *fe, u32 bw)
420 {
421 struct tda10048_state *state = fe->demodulator_priv;
422 struct tda10048_config *config = &state->config;
423 int i;
424 u32 if_freq_khz;
425
426 dprintk(1, "%s(bw = %d)\n", __func__, bw);
427
428 /* based on target bandwidth and clk we calculate pll factors */
429 switch (bw) {
430 case 6000000:
431 if_freq_khz = config->dtv6_if_freq_khz;
432 break;
433 case 7000000:
434 if_freq_khz = config->dtv7_if_freq_khz;
435 break;
436 case 8000000:
437 if_freq_khz = config->dtv8_if_freq_khz;
438 break;
439 default:
440 printk(KERN_ERR "%s() no default\n", __func__);
441 return -EINVAL;
442 }
443
444 for (i = 0; i < ARRAY_SIZE(pll_tab); i++) {
445 if ((pll_tab[i].clk_freq_khz == config->clk_freq_khz) &&
446 (pll_tab[i].if_freq_khz == if_freq_khz)) {
447
448 state->freq_if_hz = pll_tab[i].if_freq_khz * 1000;
449 state->xtal_hz = pll_tab[i].clk_freq_khz * 1000;
450 break;
451 }
452 }
453 if (i == ARRAY_SIZE(pll_tab)) {
454 printk(KERN_ERR "%s() Incorrect attach settings\n",
455 __func__);
456 return -EINVAL;
457 }
458
459 dprintk(1, "- freq_if_hz = %d\n", state->freq_if_hz);
460 dprintk(1, "- xtal_hz = %d\n", state->xtal_hz);
461 dprintk(1, "- pll_mfactor = %d\n", state->pll_mfactor);
462 dprintk(1, "- pll_nfactor = %d\n", state->pll_nfactor);
463 dprintk(1, "- pll_pfactor = %d\n", state->pll_pfactor);
464
465 /* Calculate the sample frequency */
466 state->sample_freq = state->xtal_hz * (state->pll_mfactor + 45);
467 state->sample_freq /= (state->pll_nfactor + 1);
468 state->sample_freq /= (state->pll_pfactor + 4);
469 dprintk(1, "- sample_freq = %d\n", state->sample_freq);
470
471 /* Update the I/F */
472 tda10048_set_phy2(fe, state->sample_freq, state->freq_if_hz);
473
474 return 0;
475 }
476
477 static int tda10048_firmware_upload(struct dvb_frontend *fe)
478 {
479 struct tda10048_state *state = fe->demodulator_priv;
480 struct tda10048_config *config = &state->config;
481 const struct firmware *fw;
482 int ret;
483 int pos = 0;
484 int cnt;
485 u8 wlen = config->fwbulkwritelen;
486
487 if ((wlen != TDA10048_BULKWRITE_200) && (wlen != TDA10048_BULKWRITE_50))
488 wlen = TDA10048_BULKWRITE_200;
489
490 /* request the firmware, this will block and timeout */
491 printk(KERN_INFO "%s: waiting for firmware upload (%s)...\n",
492 __func__,
493 TDA10048_DEFAULT_FIRMWARE);
494
495 ret = request_firmware(&fw, TDA10048_DEFAULT_FIRMWARE,
496 state->i2c->dev.parent);
497 if (ret) {
498 printk(KERN_ERR "%s: Upload failed. (file not found?)\n",
499 __func__);
500 return -EIO;
501 } else {
502 printk(KERN_INFO "%s: firmware read %Zu bytes.\n",
503 __func__,
504 fw->size);
505 ret = 0;
506 }
507
508 if (fw->size != TDA10048_DEFAULT_FIRMWARE_SIZE) {
509 printk(KERN_ERR "%s: firmware incorrect size\n", __func__);
510 ret = -EIO;
511 } else {
512 printk(KERN_INFO "%s: firmware uploading\n", __func__);
513
514 /* Soft reset */
515 tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
516 tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
517 & 0xfe);
518 tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
519 tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
520 | 0x01);
521
522 /* Put the demod into host download mode */
523 tda10048_writereg(state, TDA10048_CONF_C4_1,
524 tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xf9);
525
526 /* Boot the DSP */
527 tda10048_writereg(state, TDA10048_CONF_C4_1,
528 tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x08);
529
530 /* Prepare for download */
531 tda10048_writereg(state, TDA10048_DSP_CODE_CPT, 0);
532
533 /* Download the firmware payload */
534 while (pos < fw->size) {
535
536 if ((fw->size - pos) > wlen)
537 cnt = wlen;
538 else
539 cnt = fw->size - pos;
540
541 tda10048_writeregbulk(state, TDA10048_DSP_CODE_IN,
542 &fw->data[pos], cnt);
543
544 pos += cnt;
545 }
546
547 ret = -EIO;
548 /* Wait up to 250ms for the DSP to boot */
549 for (cnt = 0; cnt < 250 ; cnt += 10) {
550
551 msleep(10);
552
553 if (tda10048_readreg(state, TDA10048_SYNC_STATUS)
554 & 0x40) {
555 ret = 0;
556 break;
557 }
558 }
559 }
560
561 release_firmware(fw);
562
563 if (ret == 0) {
564 printk(KERN_INFO "%s: firmware uploaded\n", __func__);
565 state->fwloaded = 1;
566 } else
567 printk(KERN_ERR "%s: firmware upload failed\n", __func__);
568
569 return ret;
570 }
571
572 static int tda10048_set_inversion(struct dvb_frontend *fe, int inversion)
573 {
574 struct tda10048_state *state = fe->demodulator_priv;
575
576 dprintk(1, "%s(%d)\n", __func__, inversion);
577
578 if (inversion == TDA10048_INVERSION_ON)
579 tda10048_writereg(state, TDA10048_CONF_C1_1,
580 tda10048_readreg(state, TDA10048_CONF_C1_1) | 0x20);
581 else
582 tda10048_writereg(state, TDA10048_CONF_C1_1,
583 tda10048_readreg(state, TDA10048_CONF_C1_1) & 0xdf);
584
585 return 0;
586 }
587
588 /* Retrieve the demod settings */
589 static int tda10048_get_tps(struct tda10048_state *state,
590 struct dtv_frontend_properties *p)
591 {
592 u8 val;
593
594 /* Make sure the TPS regs are valid */
595 if (!(tda10048_readreg(state, TDA10048_AUTO) & 0x01))
596 return -EAGAIN;
597
598 val = tda10048_readreg(state, TDA10048_OUT_CONF2);
599 switch ((val & 0x60) >> 5) {
600 case 0:
601 p->modulation = QPSK;
602 break;
603 case 1:
604 p->modulation = QAM_16;
605 break;
606 case 2:
607 p->modulation = QAM_64;
608 break;
609 }
610 switch ((val & 0x18) >> 3) {
611 case 0:
612 p->hierarchy = HIERARCHY_NONE;
613 break;
614 case 1:
615 p->hierarchy = HIERARCHY_1;
616 break;
617 case 2:
618 p->hierarchy = HIERARCHY_2;
619 break;
620 case 3:
621 p->hierarchy = HIERARCHY_4;
622 break;
623 }
624 switch (val & 0x07) {
625 case 0:
626 p->code_rate_HP = FEC_1_2;
627 break;
628 case 1:
629 p->code_rate_HP = FEC_2_3;
630 break;
631 case 2:
632 p->code_rate_HP = FEC_3_4;
633 break;
634 case 3:
635 p->code_rate_HP = FEC_5_6;
636 break;
637 case 4:
638 p->code_rate_HP = FEC_7_8;
639 break;
640 }
641
642 val = tda10048_readreg(state, TDA10048_OUT_CONF3);
643 switch (val & 0x07) {
644 case 0:
645 p->code_rate_LP = FEC_1_2;
646 break;
647 case 1:
648 p->code_rate_LP = FEC_2_3;
649 break;
650 case 2:
651 p->code_rate_LP = FEC_3_4;
652 break;
653 case 3:
654 p->code_rate_LP = FEC_5_6;
655 break;
656 case 4:
657 p->code_rate_LP = FEC_7_8;
658 break;
659 }
660
661 val = tda10048_readreg(state, TDA10048_OUT_CONF1);
662 switch ((val & 0x0c) >> 2) {
663 case 0:
664 p->guard_interval = GUARD_INTERVAL_1_32;
665 break;
666 case 1:
667 p->guard_interval = GUARD_INTERVAL_1_16;
668 break;
669 case 2:
670 p->guard_interval = GUARD_INTERVAL_1_8;
671 break;
672 case 3:
673 p->guard_interval = GUARD_INTERVAL_1_4;
674 break;
675 }
676 switch (val & 0x03) {
677 case 0:
678 p->transmission_mode = TRANSMISSION_MODE_2K;
679 break;
680 case 1:
681 p->transmission_mode = TRANSMISSION_MODE_8K;
682 break;
683 }
684
685 return 0;
686 }
687
688 static int tda10048_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
689 {
690 struct tda10048_state *state = fe->demodulator_priv;
691 struct tda10048_config *config = &state->config;
692 dprintk(1, "%s(%d)\n", __func__, enable);
693
694 if (config->disable_gate_access)
695 return 0;
696
697 if (enable)
698 return tda10048_writereg(state, TDA10048_CONF_C4_1,
699 tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x02);
700 else
701 return tda10048_writereg(state, TDA10048_CONF_C4_1,
702 tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xfd);
703 }
704
705 static int tda10048_output_mode(struct dvb_frontend *fe, int serial)
706 {
707 struct tda10048_state *state = fe->demodulator_priv;
708 dprintk(1, "%s(%d)\n", __func__, serial);
709
710 /* Ensure pins are out of tri-state */
711 tda10048_writereg(state, TDA10048_CONF_TRISTATE1, 0x21);
712 tda10048_writereg(state, TDA10048_CONF_TRISTATE2, 0x00);
713
714 if (serial) {
715 tda10048_writereg(state, TDA10048_IC_MODE, 0x80 | 0x20);
716 tda10048_writereg(state, TDA10048_CONF_TS2, 0xc0);
717 } else {
718 tda10048_writereg(state, TDA10048_IC_MODE, 0x00);
719 tda10048_writereg(state, TDA10048_CONF_TS2, 0x01);
720 }
721
722 return 0;
723 }
724
725 /* Talk to the demod, set the FEC, GUARD, QAM settings etc */
726 /* TODO: Support manual tuning with specific params */
727 static int tda10048_set_frontend(struct dvb_frontend *fe)
728 {
729 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
730 struct tda10048_state *state = fe->demodulator_priv;
731
732 dprintk(1, "%s(frequency=%d)\n", __func__, p->frequency);
733
734 /* Update the I/F pll's if the bandwidth changes */
735 if (p->bandwidth_hz != state->bandwidth) {
736 tda10048_set_if(fe, p->bandwidth_hz);
737 tda10048_set_bandwidth(fe, p->bandwidth_hz);
738 }
739
740 if (fe->ops.tuner_ops.set_params) {
741
742 if (fe->ops.i2c_gate_ctrl)
743 fe->ops.i2c_gate_ctrl(fe, 1);
744
745 fe->ops.tuner_ops.set_params(fe);
746
747 if (fe->ops.i2c_gate_ctrl)
748 fe->ops.i2c_gate_ctrl(fe, 0);
749 }
750
751 /* Enable demod TPS auto detection and begin acquisition */
752 tda10048_writereg(state, TDA10048_AUTO, 0x57);
753 /* trigger cber and vber acquisition */
754 tda10048_writereg(state, TDA10048_CVBER_CTRL, 0x3B);
755
756 return 0;
757 }
758
759 /* Establish sane defaults and load firmware. */
760 static int tda10048_init(struct dvb_frontend *fe)
761 {
762 struct tda10048_state *state = fe->demodulator_priv;
763 struct tda10048_config *config = &state->config;
764 int ret = 0, i;
765
766 dprintk(1, "%s()\n", __func__);
767
768 /* PLL */
769 init_tab[4].data = (u8)(state->pll_mfactor);
770 init_tab[5].data = (u8)(state->pll_nfactor) | 0x40;
771
772 /* Apply register defaults */
773 for (i = 0; i < ARRAY_SIZE(init_tab); i++)
774 tda10048_writereg(state, init_tab[i].reg, init_tab[i].data);
775
776 if (state->fwloaded == 0)
777 ret = tda10048_firmware_upload(fe);
778
779 /* Set either serial or parallel */
780 tda10048_output_mode(fe, config->output_mode);
781
782 /* Set inversion */
783 tda10048_set_inversion(fe, config->inversion);
784
785 /* Establish default RF values */
786 tda10048_set_if(fe, 8000000);
787 tda10048_set_bandwidth(fe, 8000000);
788
789 /* Ensure we leave the gate closed */
790 tda10048_i2c_gate_ctrl(fe, 0);
791
792 return ret;
793 }
794
795 static int tda10048_read_status(struct dvb_frontend *fe, fe_status_t *status)
796 {
797 struct tda10048_state *state = fe->demodulator_priv;
798 u8 reg;
799
800 *status = 0;
801
802 reg = tda10048_readreg(state, TDA10048_SYNC_STATUS);
803
804 dprintk(1, "%s() status =0x%02x\n", __func__, reg);
805
806 if (reg & 0x02)
807 *status |= FE_HAS_CARRIER;
808
809 if (reg & 0x04)
810 *status |= FE_HAS_SIGNAL;
811
812 if (reg & 0x08) {
813 *status |= FE_HAS_LOCK;
814 *status |= FE_HAS_VITERBI;
815 *status |= FE_HAS_SYNC;
816 }
817
818 return 0;
819 }
820
821 static int tda10048_read_ber(struct dvb_frontend *fe, u32 *ber)
822 {
823 struct tda10048_state *state = fe->demodulator_priv;
824 static u32 cber_current;
825 u32 cber_nmax;
826 u64 cber_tmp;
827
828 dprintk(1, "%s()\n", __func__);
829
830 /* update cber on interrupt */
831 if (tda10048_readreg(state, TDA10048_SOFT_IT_C3) & 0x01) {
832 cber_tmp = tda10048_readreg(state, TDA10048_CBER_MSB) << 8 |
833 tda10048_readreg(state, TDA10048_CBER_LSB);
834 cber_nmax = tda10048_readreg(state, TDA10048_CBER_NMAX_MSB) << 8 |
835 tda10048_readreg(state, TDA10048_CBER_NMAX_LSB);
836 cber_tmp *= 100000000;
837 cber_tmp *= 2;
838 cber_tmp = div_u64(cber_tmp, (cber_nmax * 32) + 1);
839 cber_current = (u32)cber_tmp;
840 /* retrigger cber acquisition */
841 tda10048_writereg(state, TDA10048_CVBER_CTRL, 0x39);
842 }
843 /* actual cber is (*ber)/1e8 */
844 *ber = cber_current;
845
846 return 0;
847 }
848
849 static int tda10048_read_signal_strength(struct dvb_frontend *fe,
850 u16 *signal_strength)
851 {
852 struct tda10048_state *state = fe->demodulator_priv;
853 u8 v;
854
855 dprintk(1, "%s()\n", __func__);
856
857 *signal_strength = 65535;
858
859 v = tda10048_readreg(state, TDA10048_NP_OUT);
860 if (v > 0)
861 *signal_strength -= (v << 8) | v;
862
863 return 0;
864 }
865
866 /* SNR lookup table */
867 static struct snr_tab {
868 u8 val;
869 u8 data;
870 } snr_tab[] = {
871 { 0, 0 },
872 { 1, 246 },
873 { 2, 215 },
874 { 3, 198 },
875 { 4, 185 },
876 { 5, 176 },
877 { 6, 168 },
878 { 7, 161 },
879 { 8, 155 },
880 { 9, 150 },
881 { 10, 146 },
882 { 11, 141 },
883 { 12, 138 },
884 { 13, 134 },
885 { 14, 131 },
886 { 15, 128 },
887 { 16, 125 },
888 { 17, 122 },
889 { 18, 120 },
890 { 19, 118 },
891 { 20, 115 },
892 { 21, 113 },
893 { 22, 111 },
894 { 23, 109 },
895 { 24, 107 },
896 { 25, 106 },
897 { 26, 104 },
898 { 27, 102 },
899 { 28, 101 },
900 { 29, 99 },
901 { 30, 98 },
902 { 31, 96 },
903 { 32, 95 },
904 { 33, 94 },
905 { 34, 92 },
906 { 35, 91 },
907 { 36, 90 },
908 { 37, 89 },
909 { 38, 88 },
910 { 39, 86 },
911 { 40, 85 },
912 { 41, 84 },
913 { 42, 83 },
914 { 43, 82 },
915 { 44, 81 },
916 { 45, 80 },
917 { 46, 79 },
918 { 47, 78 },
919 { 48, 77 },
920 { 49, 76 },
921 { 50, 76 },
922 { 51, 75 },
923 { 52, 74 },
924 { 53, 73 },
925 { 54, 72 },
926 { 56, 71 },
927 { 57, 70 },
928 { 58, 69 },
929 { 60, 68 },
930 { 61, 67 },
931 { 63, 66 },
932 { 64, 65 },
933 { 66, 64 },
934 { 67, 63 },
935 { 68, 62 },
936 { 69, 62 },
937 { 70, 61 },
938 { 72, 60 },
939 { 74, 59 },
940 { 75, 58 },
941 { 77, 57 },
942 { 79, 56 },
943 { 81, 55 },
944 { 83, 54 },
945 { 85, 53 },
946 { 87, 52 },
947 { 89, 51 },
948 { 91, 50 },
949 { 93, 49 },
950 { 95, 48 },
951 { 97, 47 },
952 { 100, 46 },
953 { 102, 45 },
954 { 104, 44 },
955 { 107, 43 },
956 { 109, 42 },
957 { 112, 41 },
958 { 114, 40 },
959 { 117, 39 },
960 { 120, 38 },
961 { 123, 37 },
962 { 125, 36 },
963 { 128, 35 },
964 { 131, 34 },
965 { 134, 33 },
966 { 138, 32 },
967 { 141, 31 },
968 { 144, 30 },
969 { 147, 29 },
970 { 151, 28 },
971 { 154, 27 },
972 { 158, 26 },
973 { 162, 25 },
974 { 165, 24 },
975 { 169, 23 },
976 { 173, 22 },
977 { 177, 21 },
978 { 181, 20 },
979 { 186, 19 },
980 { 190, 18 },
981 { 194, 17 },
982 { 199, 16 },
983 { 204, 15 },
984 { 208, 14 },
985 { 213, 13 },
986 { 218, 12 },
987 { 223, 11 },
988 { 229, 10 },
989 { 234, 9 },
990 { 239, 8 },
991 { 245, 7 },
992 { 251, 6 },
993 { 255, 5 },
994 };
995
996 static int tda10048_read_snr(struct dvb_frontend *fe, u16 *snr)
997 {
998 struct tda10048_state *state = fe->demodulator_priv;
999 u8 v;
1000 int i, ret = -EINVAL;
1001
1002 dprintk(1, "%s()\n", __func__);
1003
1004 v = tda10048_readreg(state, TDA10048_NP_OUT);
1005 for (i = 0; i < ARRAY_SIZE(snr_tab); i++) {
1006 if (v <= snr_tab[i].val) {
1007 *snr = snr_tab[i].data;
1008 ret = 0;
1009 break;
1010 }
1011 }
1012
1013 return ret;
1014 }
1015
1016 static int tda10048_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
1017 {
1018 struct tda10048_state *state = fe->demodulator_priv;
1019
1020 dprintk(1, "%s()\n", __func__);
1021
1022 *ucblocks = tda10048_readreg(state, TDA10048_UNCOR_CPT_MSB) << 8 |
1023 tda10048_readreg(state, TDA10048_UNCOR_CPT_LSB);
1024 /* clear the uncorrected TS packets counter when saturated */
1025 if (*ucblocks == 0xFFFF)
1026 tda10048_writereg(state, TDA10048_UNCOR_CTRL, 0x80);
1027
1028 return 0;
1029 }
1030
1031 static int tda10048_get_frontend(struct dvb_frontend *fe)
1032 {
1033 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
1034 struct tda10048_state *state = fe->demodulator_priv;
1035
1036 dprintk(1, "%s()\n", __func__);
1037
1038 p->inversion = tda10048_readreg(state, TDA10048_CONF_C1_1)
1039 & 0x20 ? INVERSION_ON : INVERSION_OFF;
1040
1041 return tda10048_get_tps(state, p);
1042 }
1043
1044 static int tda10048_get_tune_settings(struct dvb_frontend *fe,
1045 struct dvb_frontend_tune_settings *tune)
1046 {
1047 tune->min_delay_ms = 1000;
1048 return 0;
1049 }
1050
1051 static void tda10048_release(struct dvb_frontend *fe)
1052 {
1053 struct tda10048_state *state = fe->demodulator_priv;
1054 dprintk(1, "%s()\n", __func__);
1055 kfree(state);
1056 }
1057
1058 static void tda10048_establish_defaults(struct dvb_frontend *fe)
1059 {
1060 struct tda10048_state *state = fe->demodulator_priv;
1061 struct tda10048_config *config = &state->config;
1062
1063 /* Validate/default the config */
1064 if (config->dtv6_if_freq_khz == 0) {
1065 config->dtv6_if_freq_khz = TDA10048_IF_4300;
1066 printk(KERN_WARNING "%s() tda10048_config.dtv6_if_freq_khz "
1067 "is not set (defaulting to %d)\n",
1068 __func__,
1069 config->dtv6_if_freq_khz);
1070 }
1071
1072 if (config->dtv7_if_freq_khz == 0) {
1073 config->dtv7_if_freq_khz = TDA10048_IF_4300;
1074 printk(KERN_WARNING "%s() tda10048_config.dtv7_if_freq_khz "
1075 "is not set (defaulting to %d)\n",
1076 __func__,
1077 config->dtv7_if_freq_khz);
1078 }
1079
1080 if (config->dtv8_if_freq_khz == 0) {
1081 config->dtv8_if_freq_khz = TDA10048_IF_4300;
1082 printk(KERN_WARNING "%s() tda10048_config.dtv8_if_freq_khz "
1083 "is not set (defaulting to %d)\n",
1084 __func__,
1085 config->dtv8_if_freq_khz);
1086 }
1087
1088 if (config->clk_freq_khz == 0) {
1089 config->clk_freq_khz = TDA10048_CLK_16000;
1090 printk(KERN_WARNING "%s() tda10048_config.clk_freq_khz "
1091 "is not set (defaulting to %d)\n",
1092 __func__,
1093 config->clk_freq_khz);
1094 }
1095 }
1096
1097 static struct dvb_frontend_ops tda10048_ops;
1098
1099 struct dvb_frontend *tda10048_attach(const struct tda10048_config *config,
1100 struct i2c_adapter *i2c)
1101 {
1102 struct tda10048_state *state = NULL;
1103
1104 dprintk(1, "%s()\n", __func__);
1105
1106 /* allocate memory for the internal state */
1107 state = kzalloc(sizeof(struct tda10048_state), GFP_KERNEL);
1108 if (state == NULL)
1109 goto error;
1110
1111 /* setup the state and clone the config */
1112 memcpy(&state->config, config, sizeof(*config));
1113 state->i2c = i2c;
1114 state->fwloaded = config->no_firmware;
1115 state->bandwidth = 8000000;
1116
1117 /* check if the demod is present */
1118 if (tda10048_readreg(state, TDA10048_IDENTITY) != 0x048)
1119 goto error;
1120
1121 /* create dvb_frontend */
1122 memcpy(&state->frontend.ops, &tda10048_ops,
1123 sizeof(struct dvb_frontend_ops));
1124 state->frontend.demodulator_priv = state;
1125
1126 /* set pll */
1127 if (config->set_pll) {
1128 state->pll_mfactor = config->pll_m;
1129 state->pll_nfactor = config->pll_n;
1130 state->pll_pfactor = config->pll_p;
1131 } else {
1132 state->pll_mfactor = 10;
1133 state->pll_nfactor = 3;
1134 state->pll_pfactor = 0;
1135 }
1136
1137 /* Establish any defaults the the user didn't pass */
1138 tda10048_establish_defaults(&state->frontend);
1139
1140 /* Set the xtal and freq defaults */
1141 if (tda10048_set_if(&state->frontend, 8000000) != 0)
1142 goto error;
1143
1144 /* Default bandwidth */
1145 if (tda10048_set_bandwidth(&state->frontend, 8000000) != 0)
1146 goto error;
1147
1148 /* Leave the gate closed */
1149 tda10048_i2c_gate_ctrl(&state->frontend, 0);
1150
1151 return &state->frontend;
1152
1153 error:
1154 kfree(state);
1155 return NULL;
1156 }
1157 EXPORT_SYMBOL(tda10048_attach);
1158
1159 static struct dvb_frontend_ops tda10048_ops = {
1160 .delsys = { SYS_DVBT },
1161 .info = {
1162 .name = "NXP TDA10048HN DVB-T",
1163 .frequency_min = 177000000,
1164 .frequency_max = 858000000,
1165 .frequency_stepsize = 166666,
1166 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1167 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1168 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
1169 FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
1170 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER
1171 },
1172
1173 .release = tda10048_release,
1174 .init = tda10048_init,
1175 .i2c_gate_ctrl = tda10048_i2c_gate_ctrl,
1176 .set_frontend = tda10048_set_frontend,
1177 .get_frontend = tda10048_get_frontend,
1178 .get_tune_settings = tda10048_get_tune_settings,
1179 .read_status = tda10048_read_status,
1180 .read_ber = tda10048_read_ber,
1181 .read_signal_strength = tda10048_read_signal_strength,
1182 .read_snr = tda10048_read_snr,
1183 .read_ucblocks = tda10048_read_ucblocks,
1184 };
1185
1186 module_param(debug, int, 0644);
1187 MODULE_PARM_DESC(debug, "Enable verbose debug messages");
1188
1189 MODULE_DESCRIPTION("NXP TDA10048HN DVB-T Demodulator driver");
1190 MODULE_AUTHOR("Steven Toth");
1191 MODULE_LICENSE("GPL");