?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
staging: usbip: bugfix for isochronous packets and optimization
[zen-stable.git] / drivers / media / dvb / frontends / tda10048.c
blob93f6a75c238eec25fbe2c8cfb905f08d113d5e2a
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 enum fe_bandwidth 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 u8 m, n, p;
210 } pll_tab[] = {
211 { TDA10048_CLK_4000, TDA10048_IF_36130, 10, 0, 0 },
212 { TDA10048_CLK_16000, TDA10048_IF_3300, 10, 3, 0 },
213 { TDA10048_CLK_16000, TDA10048_IF_3500, 10, 3, 0 },
214 { TDA10048_CLK_16000, TDA10048_IF_3800, 10, 3, 0 },
215 { TDA10048_CLK_16000, TDA10048_IF_4000, 10, 3, 0 },
216 { TDA10048_CLK_16000, TDA10048_IF_4300, 10, 3, 0 },
217 { TDA10048_CLK_16000, TDA10048_IF_36130, 10, 3, 0 },
218 };
219
220 static int tda10048_writereg(struct tda10048_state *state, u8 reg, u8 data)
221 {
222 struct tda10048_config *config = &state->config;
223 int ret;
224 u8 buf[] = { reg, data };
225 struct i2c_msg msg = {
226 .addr = config->demod_address,
227 .flags = 0, .buf = buf, .len = 2 };
228
229 dprintk(2, "%s(reg = 0x%02x, data = 0x%02x)\n", __func__, reg, data);
230
231 ret = i2c_transfer(state->i2c, &msg, 1);
232
233 if (ret != 1)
234 printk("%s: writereg error (ret == %i)\n", __func__, ret);
235
236 return (ret != 1) ? -1 : 0;
237 }
238
239 static u8 tda10048_readreg(struct tda10048_state *state, u8 reg)
240 {
241 struct tda10048_config *config = &state->config;
242 int ret;
243 u8 b0[] = { reg };
244 u8 b1[] = { 0 };
245 struct i2c_msg msg[] = {
246 { .addr = config->demod_address,
247 .flags = 0, .buf = b0, .len = 1 },
248 { .addr = config->demod_address,
249 .flags = I2C_M_RD, .buf = b1, .len = 1 } };
250
251 dprintk(2, "%s(reg = 0x%02x)\n", __func__, reg);
252
253 ret = i2c_transfer(state->i2c, msg, 2);
254
255 if (ret != 2)
256 printk(KERN_ERR "%s: readreg error (ret == %i)\n",
257 __func__, ret);
258
259 return b1[0];
260 }
261
262 static int tda10048_writeregbulk(struct tda10048_state *state, u8 reg,
263 const u8 *data, u16 len)
264 {
265 struct tda10048_config *config = &state->config;
266 int ret = -EREMOTEIO;
267 struct i2c_msg msg;
268 u8 *buf;
269
270 dprintk(2, "%s(%d, ?, len = %d)\n", __func__, reg, len);
271
272 buf = kmalloc(len + 1, GFP_KERNEL);
273 if (buf == NULL) {
274 ret = -ENOMEM;
275 goto error;
276 }
277
278 *buf = reg;
279 memcpy(buf + 1, data, len);
280
281 msg.addr = config->demod_address;
282 msg.flags = 0;
283 msg.buf = buf;
284 msg.len = len + 1;
285
286 dprintk(2, "%s(): write len = %d\n",
287 __func__, msg.len);
288
289 ret = i2c_transfer(state->i2c, &msg, 1);
290 if (ret != 1) {
291 printk(KERN_ERR "%s(): writereg error err %i\n",
292 __func__, ret);
293 ret = -EREMOTEIO;
294 }
295
296 error:
297 kfree(buf);
298
299 return ret;
300 }
301
302 static int tda10048_set_phy2(struct dvb_frontend *fe, u32 sample_freq_hz,
303 u32 if_hz)
304 {
305 struct tda10048_state *state = fe->demodulator_priv;
306 u64 t;
307
308 dprintk(1, "%s()\n", __func__);
309
310 if (sample_freq_hz == 0)
311 return -EINVAL;
312
313 if (if_hz < (sample_freq_hz / 2)) {
314 /* PHY2 = (if2/fs) * 2^15 */
315 t = if_hz;
316 t *= 10;
317 t *= 32768;
318 do_div(t, sample_freq_hz);
319 t += 5;
320 do_div(t, 10);
321 } else {
322 /* PHY2 = ((IF1-fs)/fs) * 2^15 */
323 t = sample_freq_hz - if_hz;
324 t *= 10;
325 t *= 32768;
326 do_div(t, sample_freq_hz);
327 t += 5;
328 do_div(t, 10);
329 t = ~t + 1;
330 }
331
332 tda10048_writereg(state, TDA10048_FREQ_PHY2_LSB, (u8)t);
333 tda10048_writereg(state, TDA10048_FREQ_PHY2_MSB, (u8)(t >> 8));
334
335 return 0;
336 }
337
338 static int tda10048_set_wref(struct dvb_frontend *fe, u32 sample_freq_hz,
339 u32 bw)
340 {
341 struct tda10048_state *state = fe->demodulator_priv;
342 u64 t, z;
343 u32 b = 8000000;
344
345 dprintk(1, "%s()\n", __func__);
346
347 if (sample_freq_hz == 0)
348 return -EINVAL;
349
350 if (bw == BANDWIDTH_6_MHZ)
351 b = 6000000;
352 else
353 if (bw == BANDWIDTH_7_MHZ)
354 b = 7000000;
355
356 /* WREF = (B / (7 * fs)) * 2^31 */
357 t = b * 10;
358 /* avoid warning: this decimal constant is unsigned only in ISO C90 */
359 /* t *= 2147483648 on 32bit platforms */
360 t *= (2048 * 1024);
361 t *= 1024;
362 z = 7 * sample_freq_hz;
363 do_div(t, z);
364 t += 5;
365 do_div(t, 10);
366
367 tda10048_writereg(state, TDA10048_TIME_WREF_LSB, (u8)t);
368 tda10048_writereg(state, TDA10048_TIME_WREF_MID1, (u8)(t >> 8));
369 tda10048_writereg(state, TDA10048_TIME_WREF_MID2, (u8)(t >> 16));
370 tda10048_writereg(state, TDA10048_TIME_WREF_MSB, (u8)(t >> 24));
371
372 return 0;
373 }
374
375 static int tda10048_set_invwref(struct dvb_frontend *fe, u32 sample_freq_hz,
376 u32 bw)
377 {
378 struct tda10048_state *state = fe->demodulator_priv;
379 u64 t;
380 u32 b = 8000000;
381
382 dprintk(1, "%s()\n", __func__);
383
384 if (sample_freq_hz == 0)
385 return -EINVAL;
386
387 if (bw == BANDWIDTH_6_MHZ)
388 b = 6000000;
389 else
390 if (bw == BANDWIDTH_7_MHZ)
391 b = 7000000;
392
393 /* INVWREF = ((7 * fs) / B) * 2^5 */
394 t = sample_freq_hz;
395 t *= 7;
396 t *= 32;
397 t *= 10;
398 do_div(t, b);
399 t += 5;
400 do_div(t, 10);
401
402 tda10048_writereg(state, TDA10048_TIME_INVWREF_LSB, (u8)t);
403 tda10048_writereg(state, TDA10048_TIME_INVWREF_MSB, (u8)(t >> 8));
404
405 return 0;
406 }
407
408 static int tda10048_set_bandwidth(struct dvb_frontend *fe,
409 enum fe_bandwidth bw)
410 {
411 struct tda10048_state *state = fe->demodulator_priv;
412 dprintk(1, "%s(bw=%d)\n", __func__, bw);
413
414 /* Bandwidth setting may need to be adjusted */
415 switch (bw) {
416 case BANDWIDTH_6_MHZ:
417 case BANDWIDTH_7_MHZ:
418 case BANDWIDTH_8_MHZ:
419 tda10048_set_wref(fe, state->sample_freq, bw);
420 tda10048_set_invwref(fe, state->sample_freq, bw);
421 break;
422 default:
423 printk(KERN_ERR "%s() invalid bandwidth\n", __func__);
424 return -EINVAL;
425 }
426
427 state->bandwidth = bw;
428
429 return 0;
430 }
431
432 static int tda10048_set_if(struct dvb_frontend *fe, enum fe_bandwidth bw)
433 {
434 struct tda10048_state *state = fe->demodulator_priv;
435 struct tda10048_config *config = &state->config;
436 int i;
437 u32 if_freq_khz;
438
439 dprintk(1, "%s(bw = %d)\n", __func__, bw);
440
441 /* based on target bandwidth and clk we calculate pll factors */
442 switch (bw) {
443 case BANDWIDTH_6_MHZ:
444 if_freq_khz = config->dtv6_if_freq_khz;
445 break;
446 case BANDWIDTH_7_MHZ:
447 if_freq_khz = config->dtv7_if_freq_khz;
448 break;
449 case BANDWIDTH_8_MHZ:
450 if_freq_khz = config->dtv8_if_freq_khz;
451 break;
452 default:
453 printk(KERN_ERR "%s() no default\n", __func__);
454 return -EINVAL;
455 }
456
457 for (i = 0; i < ARRAY_SIZE(pll_tab); i++) {
458 if ((pll_tab[i].clk_freq_khz == config->clk_freq_khz) &&
459 (pll_tab[i].if_freq_khz == if_freq_khz)) {
460
461 state->freq_if_hz = pll_tab[i].if_freq_khz * 1000;
462 state->xtal_hz = pll_tab[i].clk_freq_khz * 1000;
463 state->pll_mfactor = pll_tab[i].m;
464 state->pll_nfactor = pll_tab[i].n;
465 state->pll_pfactor = pll_tab[i].p;
466 break;
467 }
468 }
469 if (i == ARRAY_SIZE(pll_tab)) {
470 printk(KERN_ERR "%s() Incorrect attach settings\n",
471 __func__);
472 return -EINVAL;
473 }
474
475 dprintk(1, "- freq_if_hz = %d\n", state->freq_if_hz);
476 dprintk(1, "- xtal_hz = %d\n", state->xtal_hz);
477 dprintk(1, "- pll_mfactor = %d\n", state->pll_mfactor);
478 dprintk(1, "- pll_nfactor = %d\n", state->pll_nfactor);
479 dprintk(1, "- pll_pfactor = %d\n", state->pll_pfactor);
480
481 /* Calculate the sample frequency */
482 state->sample_freq = state->xtal_hz * (state->pll_mfactor + 45);
483 state->sample_freq /= (state->pll_nfactor + 1);
484 state->sample_freq /= (state->pll_pfactor + 4);
485 dprintk(1, "- sample_freq = %d\n", state->sample_freq);
486
487 /* Update the I/F */
488 tda10048_set_phy2(fe, state->sample_freq, state->freq_if_hz);
489
490 return 0;
491 }
492
493 static int tda10048_firmware_upload(struct dvb_frontend *fe)
494 {
495 struct tda10048_state *state = fe->demodulator_priv;
496 struct tda10048_config *config = &state->config;
497 const struct firmware *fw;
498 int ret;
499 int pos = 0;
500 int cnt;
501 u8 wlen = config->fwbulkwritelen;
502
503 if ((wlen != TDA10048_BULKWRITE_200) && (wlen != TDA10048_BULKWRITE_50))
504 wlen = TDA10048_BULKWRITE_200;
505
506 /* request the firmware, this will block and timeout */
507 printk(KERN_INFO "%s: waiting for firmware upload (%s)...\n",
508 __func__,
509 TDA10048_DEFAULT_FIRMWARE);
510
511 ret = request_firmware(&fw, TDA10048_DEFAULT_FIRMWARE,
512 state->i2c->dev.parent);
513 if (ret) {
514 printk(KERN_ERR "%s: Upload failed. (file not found?)\n",
515 __func__);
516 return -EIO;
517 } else {
518 printk(KERN_INFO "%s: firmware read %Zu bytes.\n",
519 __func__,
520 fw->size);
521 ret = 0;
522 }
523
524 if (fw->size != TDA10048_DEFAULT_FIRMWARE_SIZE) {
525 printk(KERN_ERR "%s: firmware incorrect size\n", __func__);
526 ret = -EIO;
527 } else {
528 printk(KERN_INFO "%s: firmware uploading\n", __func__);
529
530 /* Soft reset */
531 tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
532 tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
533 & 0xfe);
534 tda10048_writereg(state, TDA10048_CONF_TRISTATE1,
535 tda10048_readreg(state, TDA10048_CONF_TRISTATE1)
536 | 0x01);
537
538 /* Put the demod into host download mode */
539 tda10048_writereg(state, TDA10048_CONF_C4_1,
540 tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xf9);
541
542 /* Boot the DSP */
543 tda10048_writereg(state, TDA10048_CONF_C4_1,
544 tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x08);
545
546 /* Prepare for download */
547 tda10048_writereg(state, TDA10048_DSP_CODE_CPT, 0);
548
549 /* Download the firmware payload */
550 while (pos < fw->size) {
551
552 if ((fw->size - pos) > wlen)
553 cnt = wlen;
554 else
555 cnt = fw->size - pos;
556
557 tda10048_writeregbulk(state, TDA10048_DSP_CODE_IN,
558 &fw->data[pos], cnt);
559
560 pos += cnt;
561 }
562
563 ret = -EIO;
564 /* Wait up to 250ms for the DSP to boot */
565 for (cnt = 0; cnt < 250 ; cnt += 10) {
566
567 msleep(10);
568
569 if (tda10048_readreg(state, TDA10048_SYNC_STATUS)
570 & 0x40) {
571 ret = 0;
572 break;
573 }
574 }
575 }
576
577 release_firmware(fw);
578
579 if (ret == 0) {
580 printk(KERN_INFO "%s: firmware uploaded\n", __func__);
581 state->fwloaded = 1;
582 } else
583 printk(KERN_ERR "%s: firmware upload failed\n", __func__);
584
585 return ret;
586 }
587
588 static int tda10048_set_inversion(struct dvb_frontend *fe, int inversion)
589 {
590 struct tda10048_state *state = fe->demodulator_priv;
591
592 dprintk(1, "%s(%d)\n", __func__, inversion);
593
594 if (inversion == TDA10048_INVERSION_ON)
595 tda10048_writereg(state, TDA10048_CONF_C1_1,
596 tda10048_readreg(state, TDA10048_CONF_C1_1) | 0x20);
597 else
598 tda10048_writereg(state, TDA10048_CONF_C1_1,
599 tda10048_readreg(state, TDA10048_CONF_C1_1) & 0xdf);
600
601 return 0;
602 }
603
604 /* Retrieve the demod settings */
605 static int tda10048_get_tps(struct tda10048_state *state,
606 struct dvb_ofdm_parameters *p)
607 {
608 u8 val;
609
610 /* Make sure the TPS regs are valid */
611 if (!(tda10048_readreg(state, TDA10048_AUTO) & 0x01))
612 return -EAGAIN;
613
614 val = tda10048_readreg(state, TDA10048_OUT_CONF2);
615 switch ((val & 0x60) >> 5) {
616 case 0:
617 p->constellation = QPSK;
618 break;
619 case 1:
620 p->constellation = QAM_16;
621 break;
622 case 2:
623 p->constellation = QAM_64;
624 break;
625 }
626 switch ((val & 0x18) >> 3) {
627 case 0:
628 p->hierarchy_information = HIERARCHY_NONE;
629 break;
630 case 1:
631 p->hierarchy_information = HIERARCHY_1;
632 break;
633 case 2:
634 p->hierarchy_information = HIERARCHY_2;
635 break;
636 case 3:
637 p->hierarchy_information = HIERARCHY_4;
638 break;
639 }
640 switch (val & 0x07) {
641 case 0:
642 p->code_rate_HP = FEC_1_2;
643 break;
644 case 1:
645 p->code_rate_HP = FEC_2_3;
646 break;
647 case 2:
648 p->code_rate_HP = FEC_3_4;
649 break;
650 case 3:
651 p->code_rate_HP = FEC_5_6;
652 break;
653 case 4:
654 p->code_rate_HP = FEC_7_8;
655 break;
656 }
657
658 val = tda10048_readreg(state, TDA10048_OUT_CONF3);
659 switch (val & 0x07) {
660 case 0:
661 p->code_rate_LP = FEC_1_2;
662 break;
663 case 1:
664 p->code_rate_LP = FEC_2_3;
665 break;
666 case 2:
667 p->code_rate_LP = FEC_3_4;
668 break;
669 case 3:
670 p->code_rate_LP = FEC_5_6;
671 break;
672 case 4:
673 p->code_rate_LP = FEC_7_8;
674 break;
675 }
676
677 val = tda10048_readreg(state, TDA10048_OUT_CONF1);
678 switch ((val & 0x0c) >> 2) {
679 case 0:
680 p->guard_interval = GUARD_INTERVAL_1_32;
681 break;
682 case 1:
683 p->guard_interval = GUARD_INTERVAL_1_16;
684 break;
685 case 2:
686 p->guard_interval = GUARD_INTERVAL_1_8;
687 break;
688 case 3:
689 p->guard_interval = GUARD_INTERVAL_1_4;
690 break;
691 }
692 switch (val & 0x03) {
693 case 0:
694 p->transmission_mode = TRANSMISSION_MODE_2K;
695 break;
696 case 1:
697 p->transmission_mode = TRANSMISSION_MODE_8K;
698 break;
699 }
700
701 return 0;
702 }
703
704 static int tda10048_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
705 {
706 struct tda10048_state *state = fe->demodulator_priv;
707 struct tda10048_config *config = &state->config;
708 dprintk(1, "%s(%d)\n", __func__, enable);
709
710 if (config->disable_gate_access)
711 return 0;
712
713 if (enable)
714 return tda10048_writereg(state, TDA10048_CONF_C4_1,
715 tda10048_readreg(state, TDA10048_CONF_C4_1) | 0x02);
716 else
717 return tda10048_writereg(state, TDA10048_CONF_C4_1,
718 tda10048_readreg(state, TDA10048_CONF_C4_1) & 0xfd);
719 }
720
721 static int tda10048_output_mode(struct dvb_frontend *fe, int serial)
722 {
723 struct tda10048_state *state = fe->demodulator_priv;
724 dprintk(1, "%s(%d)\n", __func__, serial);
725
726 /* Ensure pins are out of tri-state */
727 tda10048_writereg(state, TDA10048_CONF_TRISTATE1, 0x21);
728 tda10048_writereg(state, TDA10048_CONF_TRISTATE2, 0x00);
729
730 if (serial) {
731 tda10048_writereg(state, TDA10048_IC_MODE, 0x80 | 0x20);
732 tda10048_writereg(state, TDA10048_CONF_TS2, 0xc0);
733 } else {
734 tda10048_writereg(state, TDA10048_IC_MODE, 0x00);
735 tda10048_writereg(state, TDA10048_CONF_TS2, 0x01);
736 }
737
738 return 0;
739 }
740
741 /* Talk to the demod, set the FEC, GUARD, QAM settings etc */
742 /* TODO: Support manual tuning with specific params */
743 static int tda10048_set_frontend(struct dvb_frontend *fe,
744 struct dvb_frontend_parameters *p)
745 {
746 struct tda10048_state *state = fe->demodulator_priv;
747
748 dprintk(1, "%s(frequency=%d)\n", __func__, p->frequency);
749
750 /* Update the I/F pll's if the bandwidth changes */
751 if (p->u.ofdm.bandwidth != state->bandwidth) {
752 tda10048_set_if(fe, p->u.ofdm.bandwidth);
753 tda10048_set_bandwidth(fe, p->u.ofdm.bandwidth);
754 }
755
756 if (fe->ops.tuner_ops.set_params) {
757
758 if (fe->ops.i2c_gate_ctrl)
759 fe->ops.i2c_gate_ctrl(fe, 1);
760
761 fe->ops.tuner_ops.set_params(fe, p);
762
763 if (fe->ops.i2c_gate_ctrl)
764 fe->ops.i2c_gate_ctrl(fe, 0);
765 }
766
767 /* Enable demod TPS auto detection and begin acquisition */
768 tda10048_writereg(state, TDA10048_AUTO, 0x57);
769 /* trigger cber and vber acquisition */
770 tda10048_writereg(state, TDA10048_CVBER_CTRL, 0x3B);
771
772 return 0;
773 }
774
775 /* Establish sane defaults and load firmware. */
776 static int tda10048_init(struct dvb_frontend *fe)
777 {
778 struct tda10048_state *state = fe->demodulator_priv;
779 struct tda10048_config *config = &state->config;
780 int ret = 0, i;
781
782 dprintk(1, "%s()\n", __func__);
783
784 /* Apply register defaults */
785 for (i = 0; i < ARRAY_SIZE(init_tab); i++)
786 tda10048_writereg(state, init_tab[i].reg, init_tab[i].data);
787
788 if (state->fwloaded == 0)
789 ret = tda10048_firmware_upload(fe);
790
791 /* Set either serial or parallel */
792 tda10048_output_mode(fe, config->output_mode);
793
794 /* Set inversion */
795 tda10048_set_inversion(fe, config->inversion);
796
797 /* Establish default RF values */
798 tda10048_set_if(fe, BANDWIDTH_8_MHZ);
799 tda10048_set_bandwidth(fe, BANDWIDTH_8_MHZ);
800
801 /* Ensure we leave the gate closed */
802 tda10048_i2c_gate_ctrl(fe, 0);
803
804 return ret;
805 }
806
807 static int tda10048_read_status(struct dvb_frontend *fe, fe_status_t *status)
808 {
809 struct tda10048_state *state = fe->demodulator_priv;
810 u8 reg;
811
812 *status = 0;
813
814 reg = tda10048_readreg(state, TDA10048_SYNC_STATUS);
815
816 dprintk(1, "%s() status =0x%02x\n", __func__, reg);
817
818 if (reg & 0x02)
819 *status |= FE_HAS_CARRIER;
820
821 if (reg & 0x04)
822 *status |= FE_HAS_SIGNAL;
823
824 if (reg & 0x08) {
825 *status |= FE_HAS_LOCK;
826 *status |= FE_HAS_VITERBI;
827 *status |= FE_HAS_SYNC;
828 }
829
830 return 0;
831 }
832
833 static int tda10048_read_ber(struct dvb_frontend *fe, u32 *ber)
834 {
835 struct tda10048_state *state = fe->demodulator_priv;
836 static u32 cber_current;
837 u32 cber_nmax;
838 u64 cber_tmp;
839
840 dprintk(1, "%s()\n", __func__);
841
842 /* update cber on interrupt */
843 if (tda10048_readreg(state, TDA10048_SOFT_IT_C3) & 0x01) {
844 cber_tmp = tda10048_readreg(state, TDA10048_CBER_MSB) << 8 |
845 tda10048_readreg(state, TDA10048_CBER_LSB);
846 cber_nmax = tda10048_readreg(state, TDA10048_CBER_NMAX_MSB) << 8 |
847 tda10048_readreg(state, TDA10048_CBER_NMAX_LSB);
848 cber_tmp *= 100000000;
849 cber_tmp *= 2;
850 cber_tmp = div_u64(cber_tmp, (cber_nmax * 32) + 1);
851 cber_current = (u32)cber_tmp;
852 /* retrigger cber acquisition */
853 tda10048_writereg(state, TDA10048_CVBER_CTRL, 0x39);
854 }
855 /* actual cber is (*ber)/1e8 */
856 *ber = cber_current;
857
858 return 0;
859 }
860
861 static int tda10048_read_signal_strength(struct dvb_frontend *fe,
862 u16 *signal_strength)
863 {
864 struct tda10048_state *state = fe->demodulator_priv;
865 u8 v;
866
867 dprintk(1, "%s()\n", __func__);
868
869 *signal_strength = 65535;
870
871 v = tda10048_readreg(state, TDA10048_NP_OUT);
872 if (v > 0)
873 *signal_strength -= (v << 8) | v;
874
875 return 0;
876 }
877
878 /* SNR lookup table */
879 static struct snr_tab {
880 u8 val;
881 u8 data;
882 } snr_tab[] = {
883 { 0, 0 },
884 { 1, 246 },
885 { 2, 215 },
886 { 3, 198 },
887 { 4, 185 },
888 { 5, 176 },
889 { 6, 168 },
890 { 7, 161 },
891 { 8, 155 },
892 { 9, 150 },
893 { 10, 146 },
894 { 11, 141 },
895 { 12, 138 },
896 { 13, 134 },
897 { 14, 131 },
898 { 15, 128 },
899 { 16, 125 },
900 { 17, 122 },
901 { 18, 120 },
902 { 19, 118 },
903 { 20, 115 },
904 { 21, 113 },
905 { 22, 111 },
906 { 23, 109 },
907 { 24, 107 },
908 { 25, 106 },
909 { 26, 104 },
910 { 27, 102 },
911 { 28, 101 },
912 { 29, 99 },
913 { 30, 98 },
914 { 31, 96 },
915 { 32, 95 },
916 { 33, 94 },
917 { 34, 92 },
918 { 35, 91 },
919 { 36, 90 },
920 { 37, 89 },
921 { 38, 88 },
922 { 39, 86 },
923 { 40, 85 },
924 { 41, 84 },
925 { 42, 83 },
926 { 43, 82 },
927 { 44, 81 },
928 { 45, 80 },
929 { 46, 79 },
930 { 47, 78 },
931 { 48, 77 },
932 { 49, 76 },
933 { 50, 76 },
934 { 51, 75 },
935 { 52, 74 },
936 { 53, 73 },
937 { 54, 72 },
938 { 56, 71 },
939 { 57, 70 },
940 { 58, 69 },
941 { 60, 68 },
942 { 61, 67 },
943 { 63, 66 },
944 { 64, 65 },
945 { 66, 64 },
946 { 67, 63 },
947 { 68, 62 },
948 { 69, 62 },
949 { 70, 61 },
950 { 72, 60 },
951 { 74, 59 },
952 { 75, 58 },
953 { 77, 57 },
954 { 79, 56 },
955 { 81, 55 },
956 { 83, 54 },
957 { 85, 53 },
958 { 87, 52 },
959 { 89, 51 },
960 { 91, 50 },
961 { 93, 49 },
962 { 95, 48 },
963 { 97, 47 },
964 { 100, 46 },
965 { 102, 45 },
966 { 104, 44 },
967 { 107, 43 },
968 { 109, 42 },
969 { 112, 41 },
970 { 114, 40 },
971 { 117, 39 },
972 { 120, 38 },
973 { 123, 37 },
974 { 125, 36 },
975 { 128, 35 },
976 { 131, 34 },
977 { 134, 33 },
978 { 138, 32 },
979 { 141, 31 },
980 { 144, 30 },
981 { 147, 29 },
982 { 151, 28 },
983 { 154, 27 },
984 { 158, 26 },
985 { 162, 25 },
986 { 165, 24 },
987 { 169, 23 },
988 { 173, 22 },
989 { 177, 21 },
990 { 181, 20 },
991 { 186, 19 },
992 { 190, 18 },
993 { 194, 17 },
994 { 199, 16 },
995 { 204, 15 },
996 { 208, 14 },
997 { 213, 13 },
998 { 218, 12 },
999 { 223, 11 },
1000 { 229, 10 },
1001 { 234, 9 },
1002 { 239, 8 },
1003 { 245, 7 },
1004 { 251, 6 },
1005 { 255, 5 },
1006 };
1007
1008 static int tda10048_read_snr(struct dvb_frontend *fe, u16 *snr)
1009 {
1010 struct tda10048_state *state = fe->demodulator_priv;
1011 u8 v;
1012 int i, ret = -EINVAL;
1013
1014 dprintk(1, "%s()\n", __func__);
1015
1016 v = tda10048_readreg(state, TDA10048_NP_OUT);
1017 for (i = 0; i < ARRAY_SIZE(snr_tab); i++) {
1018 if (v <= snr_tab[i].val) {
1019 *snr = snr_tab[i].data;
1020 ret = 0;
1021 break;
1022 }
1023 }
1024
1025 return ret;
1026 }
1027
1028 static int tda10048_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
1029 {
1030 struct tda10048_state *state = fe->demodulator_priv;
1031
1032 dprintk(1, "%s()\n", __func__);
1033
1034 *ucblocks = tda10048_readreg(state, TDA10048_UNCOR_CPT_MSB) << 8 |
1035 tda10048_readreg(state, TDA10048_UNCOR_CPT_LSB);
1036 /* clear the uncorrected TS packets counter when saturated */
1037 if (*ucblocks == 0xFFFF)
1038 tda10048_writereg(state, TDA10048_UNCOR_CTRL, 0x80);
1039
1040 return 0;
1041 }
1042
1043 static int tda10048_get_frontend(struct dvb_frontend *fe,
1044 struct dvb_frontend_parameters *p)
1045 {
1046 struct tda10048_state *state = fe->demodulator_priv;
1047
1048 dprintk(1, "%s()\n", __func__);
1049
1050 p->inversion = tda10048_readreg(state, TDA10048_CONF_C1_1)
1051 & 0x20 ? INVERSION_ON : INVERSION_OFF;
1052
1053 return tda10048_get_tps(state, &p->u.ofdm);
1054 }
1055
1056 static int tda10048_get_tune_settings(struct dvb_frontend *fe,
1057 struct dvb_frontend_tune_settings *tune)
1058 {
1059 tune->min_delay_ms = 1000;
1060 return 0;
1061 }
1062
1063 static void tda10048_release(struct dvb_frontend *fe)
1064 {
1065 struct tda10048_state *state = fe->demodulator_priv;
1066 dprintk(1, "%s()\n", __func__);
1067 kfree(state);
1068 }
1069
1070 static void tda10048_establish_defaults(struct dvb_frontend *fe)
1071 {
1072 struct tda10048_state *state = fe->demodulator_priv;
1073 struct tda10048_config *config = &state->config;
1074
1075 /* Validate/default the config */
1076 if (config->dtv6_if_freq_khz == 0) {
1077 config->dtv6_if_freq_khz = TDA10048_IF_4300;
1078 printk(KERN_WARNING "%s() tda10048_config.dtv6_if_freq_khz "
1079 "is not set (defaulting to %d)\n",
1080 __func__,
1081 config->dtv6_if_freq_khz);
1082 }
1083
1084 if (config->dtv7_if_freq_khz == 0) {
1085 config->dtv7_if_freq_khz = TDA10048_IF_4300;
1086 printk(KERN_WARNING "%s() tda10048_config.dtv7_if_freq_khz "
1087 "is not set (defaulting to %d)\n",
1088 __func__,
1089 config->dtv7_if_freq_khz);
1090 }
1091
1092 if (config->dtv8_if_freq_khz == 0) {
1093 config->dtv8_if_freq_khz = TDA10048_IF_4300;
1094 printk(KERN_WARNING "%s() tda10048_config.dtv8_if_freq_khz "
1095 "is not set (defaulting to %d)\n",
1096 __func__,
1097 config->dtv8_if_freq_khz);
1098 }
1099
1100 if (config->clk_freq_khz == 0) {
1101 config->clk_freq_khz = TDA10048_CLK_16000;
1102 printk(KERN_WARNING "%s() tda10048_config.clk_freq_khz "
1103 "is not set (defaulting to %d)\n",
1104 __func__,
1105 config->clk_freq_khz);
1106 }
1107 }
1108
1109 static struct dvb_frontend_ops tda10048_ops;
1110
1111 struct dvb_frontend *tda10048_attach(const struct tda10048_config *config,
1112 struct i2c_adapter *i2c)
1113 {
1114 struct tda10048_state *state = NULL;
1115
1116 dprintk(1, "%s()\n", __func__);
1117
1118 /* allocate memory for the internal state */
1119 state = kzalloc(sizeof(struct tda10048_state), GFP_KERNEL);
1120 if (state == NULL)
1121 goto error;
1122
1123 /* setup the state and clone the config */
1124 memcpy(&state->config, config, sizeof(*config));
1125 state->i2c = i2c;
1126 state->fwloaded = 0;
1127 state->bandwidth = BANDWIDTH_8_MHZ;
1128
1129 /* check if the demod is present */
1130 if (tda10048_readreg(state, TDA10048_IDENTITY) != 0x048)
1131 goto error;
1132
1133 /* create dvb_frontend */
1134 memcpy(&state->frontend.ops, &tda10048_ops,
1135 sizeof(struct dvb_frontend_ops));
1136 state->frontend.demodulator_priv = state;
1137
1138 /* Establish any defaults the the user didn't pass */
1139 tda10048_establish_defaults(&state->frontend);
1140
1141 /* Set the xtal and freq defaults */
1142 if (tda10048_set_if(&state->frontend, BANDWIDTH_8_MHZ) != 0)
1143 goto error;
1144
1145 /* Default bandwidth */
1146 if (tda10048_set_bandwidth(&state->frontend, BANDWIDTH_8_MHZ) != 0)
1147 goto error;
1148
1149 /* Leave the gate closed */
1150 tda10048_i2c_gate_ctrl(&state->frontend, 0);
1151
1152 return &state->frontend;
1153
1154 error:
1155 kfree(state);
1156 return NULL;
1157 }
1158 EXPORT_SYMBOL(tda10048_attach);
1159
1160 static struct dvb_frontend_ops tda10048_ops = {
1161
1162 .info = {
1163 .name = "NXP TDA10048HN DVB-T",
1164 .type = FE_OFDM,
1165 .frequency_min = 177000000,
1166 .frequency_max = 858000000,
1167 .frequency_stepsize = 166666,
1168 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1169 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1170 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
1171 FE_CAN_HIERARCHY_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
1172 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_RECOVER
1173 },
1174
1175 .release = tda10048_release,
1176 .init = tda10048_init,
1177 .i2c_gate_ctrl = tda10048_i2c_gate_ctrl,
1178 .set_frontend = tda10048_set_frontend,
1179 .get_frontend = tda10048_get_frontend,
1180 .get_tune_settings = tda10048_get_tune_settings,
1181 .read_status = tda10048_read_status,
1182 .read_ber = tda10048_read_ber,
1183 .read_signal_strength = tda10048_read_signal_strength,
1184 .read_snr = tda10048_read_snr,
1185 .read_ucblocks = tda10048_read_ucblocks,
1186 };
1187
1188 module_param(debug, int, 0644);
1189 MODULE_PARM_DESC(debug, "Enable verbose debug messages");
1190
1191 MODULE_DESCRIPTION("NXP TDA10048HN DVB-T Demodulator driver");
1192 MODULE_AUTHOR("Steven Toth");
1193 MODULE_LICENSE("GPL");