1 /*
2
3 i2c tv tuner chip device driver
4 controls the philips tda8290+75 tuner chip combo.
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 This "tda8290" module was split apart from the original "tuner" module.
21 */
22
23 #include <linux/i2c.h>
24 #include <linux/delay.h>
25 #include <linux/videodev.h>
26 #include "tuner-i2c.h"
27 #include "tda8290.h"
28 #include "tda827x.h"
29 #include "tda18271.h"
30
31 static int debug;
32 module_param(debug, int, 0644);
33 MODULE_PARM_DESC(debug, "enable verbose debug messages");
34
35 #define PREFIX "tda8290"
36
37 /* ---------------------------------------------------------------------- */
38
39 struct tda8290_priv {
40 struct tuner_i2c_props i2c_props;
41
42 unsigned char tda8290_easy_mode;
43
44 unsigned char tda827x_addr;
45
46 unsigned char ver;
47 #define TDA8290 1
48 #define TDA8295 2
49 #define TDA8275 4
50 #define TDA8275A 8
51 #define TDA18271 16
52
53 struct tda827x_config cfg;
54 };
55
56 /*---------------------------------------------------------------------*/
57
58 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
59 {
60 struct tda8290_priv *priv = fe->analog_demod_priv;
61
62 unsigned char enable[2] = { 0x21, 0xC0 };
63 unsigned char disable[2] = { 0x21, 0x00 };
64 unsigned char *msg;
65
66 if (close) {
67 msg = enable;
68 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
69 /* let the bridge stabilize */
70 msleep(20);
71 } else {
72 msg = disable;
73 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
74 }
75
76 return 0;
77 }
78
79 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
80 {
81 struct tda8290_priv *priv = fe->analog_demod_priv;
82
83 unsigned char enable[2] = { 0x45, 0xc1 };
84 unsigned char disable[2] = { 0x46, 0x00 };
85 unsigned char buf[3] = { 0x45, 0x01, 0x00 };
86 unsigned char *msg;
87
88 if (close) {
89 msg = enable;
90 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
91 /* let the bridge stabilize */
92 msleep(20);
93 } else {
94 msg = disable;
95 tuner_i2c_xfer_send(&priv->i2c_props, msg, 1);
96 tuner_i2c_xfer_recv(&priv->i2c_props, &msg[1], 1);
97
98 buf[2] = msg[1];
99 buf[2] &= ~0x04;
100 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
101 msleep(5);
102
103 msg[1] |= 0x04;
104 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
105 }
106
107 return 0;
108 }
109
110 /*---------------------------------------------------------------------*/
111
112 static void set_audio(struct dvb_frontend *fe,
113 struct analog_parameters *params)
114 {
115 struct tda8290_priv *priv = fe->analog_demod_priv;
116 char* mode;
117
118 if (params->std & V4L2_STD_MN) {
119 priv->tda8290_easy_mode = 0x01;
120 mode = "MN";
121 } else if (params->std & V4L2_STD_B) {
122 priv->tda8290_easy_mode = 0x02;
123 mode = "B";
124 } else if (params->std & V4L2_STD_GH) {
125 priv->tda8290_easy_mode = 0x04;
126 mode = "GH";
127 } else if (params->std & V4L2_STD_PAL_I) {
128 priv->tda8290_easy_mode = 0x08;
129 mode = "I";
130 } else if (params->std & V4L2_STD_DK) {
131 priv->tda8290_easy_mode = 0x10;
132 mode = "DK";
133 } else if (params->std & V4L2_STD_SECAM_L) {
134 priv->tda8290_easy_mode = 0x20;
135 mode = "L";
136 } else if (params->std & V4L2_STD_SECAM_LC) {
137 priv->tda8290_easy_mode = 0x40;
138 mode = "LC";
139 } else {
140 priv->tda8290_easy_mode = 0x10;
141 mode = "xx";
142 }
143
144 tuner_dbg("setting tda829x to system %s\n", mode);
145 }
146
147 static void tda8290_set_params(struct dvb_frontend *fe,
148 struct analog_parameters *params)
149 {
150 struct tda8290_priv *priv = fe->analog_demod_priv;
151
152 unsigned char soft_reset[] = { 0x00, 0x00 };
153 unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode };
154 unsigned char expert_mode[] = { 0x01, 0x80 };
155 unsigned char agc_out_on[] = { 0x02, 0x00 };
156 unsigned char gainset_off[] = { 0x28, 0x14 };
157 unsigned char if_agc_spd[] = { 0x0f, 0x88 };
158 unsigned char adc_head_6[] = { 0x05, 0x04 };
159 unsigned char adc_head_9[] = { 0x05, 0x02 };
160 unsigned char adc_head_12[] = { 0x05, 0x01 };
161 unsigned char pll_bw_nom[] = { 0x0d, 0x47 };
162 unsigned char pll_bw_low[] = { 0x0d, 0x27 };
163 unsigned char gainset_2[] = { 0x28, 0x64 };
164 unsigned char agc_rst_on[] = { 0x0e, 0x0b };
165 unsigned char agc_rst_off[] = { 0x0e, 0x09 };
166 unsigned char if_agc_set[] = { 0x0f, 0x81 };
167 unsigned char addr_adc_sat = 0x1a;
168 unsigned char addr_agc_stat = 0x1d;
169 unsigned char addr_pll_stat = 0x1b;
170 unsigned char adc_sat, agc_stat,
171 pll_stat;
172 int i;
173
174 set_audio(fe, params);
175
176 if (priv->cfg.config)
177 tuner_dbg("tda827xa config is 0x%02x\n", *priv->cfg.config);
178 tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
179 tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
180 tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
181 msleep(1);
182
183 expert_mode[1] = priv->tda8290_easy_mode + 0x80;
184 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
185 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
186 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
187 if (priv->tda8290_easy_mode & 0x60)
188 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
189 else
190 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
191 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
192
193 tda8290_i2c_bridge(fe, 1);
194
195 if (fe->ops.tuner_ops.set_analog_params)
196 fe->ops.tuner_ops.set_analog_params(fe, params);
197
198 for (i = 0; i < 3; i++) {
199 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
200 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
201 if (pll_stat & 0x80) {
202 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
203 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
204 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
205 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
206 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
207 break;
208 } else {
209 tuner_dbg("tda8290 not locked, no signal?\n");
210 msleep(100);
211 }
212 }
213 /* adjust headroom resp. gain */
214 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
215 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
216 agc_stat, adc_sat, pll_stat & 0x80);
217 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
218 msleep(100);
219 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
220 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
221 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
222 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
223 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
224 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
225 agc_stat, pll_stat & 0x80);
226 if (priv->cfg.agcf)
227 priv->cfg.agcf(fe);
228 msleep(100);
229 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
230 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
231 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
232 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
233 if((agc_stat > 115) || !(pll_stat & 0x80)) {
234 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
235 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
236 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
237 msleep(100);
238 }
239 }
240 }
241
242 /* l/ l' deadlock? */
243 if(priv->tda8290_easy_mode & 0x60) {
244 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
245 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
246 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
247 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
248 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
249 tuner_dbg("trying to resolve SECAM L deadlock\n");
250 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
251 msleep(40);
252 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
253 }
254 }
255
256 tda8290_i2c_bridge(fe, 0);
257 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
258 }
259
260 /*---------------------------------------------------------------------*/
261
262 static void tda8295_power(struct dvb_frontend *fe, int enable)
263 {
264 struct tda8290_priv *priv = fe->analog_demod_priv;
265 unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
266
267 tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
268 tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
269
270 if (enable)
271 buf[1] = 0x01;
272 else
273 buf[1] = 0x03;
274
275 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
276 }
277
278 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
279 {
280 struct tda8290_priv *priv = fe->analog_demod_priv;
281 unsigned char buf[] = { 0x01, 0x00 };
282
283 tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
284 tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
285
286 if (enable)
287 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
288 else
289 buf[1] = 0x00; /* reset active bit */
290
291 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
292 }
293
294 static void tda8295_set_video_std(struct dvb_frontend *fe)
295 {
296 struct tda8290_priv *priv = fe->analog_demod_priv;
297 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
298
299 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
300
301 tda8295_set_easy_mode(fe, 1);
302 msleep(20);
303 tda8295_set_easy_mode(fe, 0);
304 }
305
306 /*---------------------------------------------------------------------*/
307
308 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
309 {
310 struct tda8290_priv *priv = fe->analog_demod_priv;
311 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
312
313 tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
314 tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
315
316 if (enable)
317 buf[1] &= ~0x40;
318 else
319 buf[1] |= 0x40;
320
321 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
322 }
323
324 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
325 {
326 struct tda8290_priv *priv = fe->analog_demod_priv;
327 unsigned char set_gpio_cf[] = { 0x44, 0x00 };
328 unsigned char set_gpio_val[] = { 0x46, 0x00 };
329
330 tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1);
331 tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1);
332 tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1);
333 tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1);
334
335 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
336
337 if (enable) {
338 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */
339 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
340 }
341 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
342 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
343 }
344
345 static int tda8295_has_signal(struct dvb_frontend *fe)
346 {
347 struct tda8290_priv *priv = fe->analog_demod_priv;
348
349 unsigned char hvpll_stat = 0x26;
350 unsigned char ret;
351
352 tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1);
353 tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1);
354 return (ret & 0x01) ? 65535 : 0;
355 }
356
357 /*---------------------------------------------------------------------*/
358
359 static void tda8295_set_params(struct dvb_frontend *fe,
360 struct analog_parameters *params)
361 {
362 struct tda8290_priv *priv = fe->analog_demod_priv;
363
364 unsigned char blanking_mode[] = { 0x1d, 0x00 };
365
366 set_audio(fe, params);
367
368 tuner_dbg("%s: freq = %d\n", __FUNCTION__, params->frequency);
369
370 tda8295_power(fe, 1);
371 tda8295_agc1_out(fe, 1);
372
373 tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1);
374 tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1);
375
376 tda8295_set_video_std(fe);
377
378 blanking_mode[1] = 0x03;
379 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
380 msleep(20);
381
382 tda8295_i2c_bridge(fe, 1);
383
384 if (fe->ops.tuner_ops.set_analog_params)
385 fe->ops.tuner_ops.set_analog_params(fe, params);
386
387 if (priv->cfg.agcf)
388 priv->cfg.agcf(fe);
389
390 if (tda8295_has_signal(fe))
391 tuner_dbg("tda8295 is locked\n");
392 else
393 tuner_dbg("tda8295 not locked, no signal?\n");
394
395 tda8295_i2c_bridge(fe, 0);
396 }
397
398 /*---------------------------------------------------------------------*/
399
400 static int tda8290_has_signal(struct dvb_frontend *fe)
401 {
402 struct tda8290_priv *priv = fe->analog_demod_priv;
403
404 unsigned char i2c_get_afc[1] = { 0x1B };
405 unsigned char afc = 0;
406
407 tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
408 tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);
409 return (afc & 0x80)? 65535:0;
410 }
411
412 /*---------------------------------------------------------------------*/
413
414 static void tda8290_standby(struct dvb_frontend *fe)
415 {
416 struct tda8290_priv *priv = fe->analog_demod_priv;
417
418 unsigned char cb1[] = { 0x30, 0xD0 };
419 unsigned char tda8290_standby[] = { 0x00, 0x02 };
420 unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
421 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
422
423 tda8290_i2c_bridge(fe, 1);
424 if (priv->ver & TDA8275A)
425 cb1[1] = 0x90;
426 i2c_transfer(priv->i2c_props.adap, &msg, 1);
427 tda8290_i2c_bridge(fe, 0);
428 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
429 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
430 }
431
432 static void tda8295_standby(struct dvb_frontend *fe)
433 {
434 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
435
436 tda8295_power(fe, 0);
437 }
438
439 static void tda8290_init_if(struct dvb_frontend *fe)
440 {
441 struct tda8290_priv *priv = fe->analog_demod_priv;
442
443 unsigned char set_VS[] = { 0x30, 0x6F };
444 unsigned char set_GP00_CF[] = { 0x20, 0x01 };
445 unsigned char set_GP01_CF[] = { 0x20, 0x0B };
446
447 if ((priv->cfg.config) &&
448 ((*priv->cfg.config == 1) || (*priv->cfg.config == 2)))
449 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
450 else
451 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
452 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
453 }
454
455 static void tda8295_init_if(struct dvb_frontend *fe)
456 {
457 struct tda8290_priv *priv = fe->analog_demod_priv;
458
459 static unsigned char set_adc_ctl[] = { 0x33, 0x14 };
460 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 };
461 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 };
462 static unsigned char set_pll_reg0[] = { 0x38, 0x23 };
463 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 };
464 static unsigned char set_pll_reg10[] = { 0x42, 0x61 };
465 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b };
466
467 tda8295_power(fe, 1);
468
469 tda8295_set_easy_mode(fe, 0);
470 tda8295_set_video_std(fe);
471
472 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
473 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
474 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
475 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
476 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
477 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
478 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
479
480 tda8295_agc1_out(fe, 0);
481 tda8295_agc2_out(fe, 0);
482 }
483
484 static void tda8290_init_tuner(struct dvb_frontend *fe)
485 {
486 struct tda8290_priv *priv = fe->analog_demod_priv;
487 unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
488 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
489 unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
490 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
491 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
492 .buf=tda8275_init, .len = 14};
493 if (priv->ver & TDA8275A)
494 msg.buf = tda8275a_init;
495
496 tda8290_i2c_bridge(fe, 1);
497 i2c_transfer(priv->i2c_props.adap, &msg, 1);
498 tda8290_i2c_bridge(fe, 0);
499 }
500
501 /*---------------------------------------------------------------------*/
502
503 static void tda829x_release(struct dvb_frontend *fe)
504 {
505 struct tda8290_priv *priv = fe->analog_demod_priv;
506
507 /* only try to release the tuner if we've
508 * attached it from within this module */
509 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
510 if (fe->ops.tuner_ops.release)
511 fe->ops.tuner_ops.release(fe);
512
513 kfree(fe->analog_demod_priv);
514 fe->analog_demod_priv = NULL;
515 }
516
517 static struct tda18271_config tda829x_tda18271_config = {
518 .gate = TDA18271_GATE_ANALOG,
519 };
520
521 static int tda829x_find_tuner(struct dvb_frontend *fe)
522 {
523 struct tda8290_priv *priv = fe->analog_demod_priv;
524 struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
525 int i, ret, tuners_found;
526 u32 tuner_addrs;
527 u8 data;
528 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
529
530 if (NULL == analog_ops->i2c_gate_ctrl)
531 return -EINVAL;
532
533 analog_ops->i2c_gate_ctrl(fe, 1);
534
535 /* probe for tuner chip */
536 tuners_found = 0;
537 tuner_addrs = 0;
538 for (i = 0x60; i <= 0x63; i++) {
539 msg.addr = i;
540 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
541 if (ret == 1) {
542 tuners_found++;
543 tuner_addrs = (tuner_addrs << 8) + i;
544 }
545 }
546 /* if there is more than one tuner, we expect the right one is
547 behind the bridge and we choose the highest address that doesn't
548 give a response now
549 */
550
551 analog_ops->i2c_gate_ctrl(fe, 0);
552
553 if (tuners_found > 1)
554 for (i = 0; i < tuners_found; i++) {
555 msg.addr = tuner_addrs & 0xff;
556 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
557 if (ret == 1)
558 tuner_addrs = tuner_addrs >> 8;
559 else
560 break;
561 }
562
563 if (tuner_addrs == 0) {
564 tuner_addrs = 0x60;
565 tuner_info("could not clearly identify tuner address, "
566 "defaulting to %x\n", tuner_addrs);
567 } else {
568 tuner_addrs = tuner_addrs & 0xff;
569 tuner_info("setting tuner address to %x\n", tuner_addrs);
570 }
571 priv->tda827x_addr = tuner_addrs;
572 msg.addr = tuner_addrs;
573
574 analog_ops->i2c_gate_ctrl(fe, 1);
575 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
576
577 if (ret != 1) {
578 tuner_warn("tuner access failed!\n");
579 return -EREMOTEIO;
580 }
581
582 if ((data == 0x83) || (data == 0x84)) {
583 priv->ver |= TDA18271;
584 tda18271_attach(fe, priv->tda827x_addr,
585 priv->i2c_props.adap,
586 &tda829x_tda18271_config);
587 } else {
588 if ((data & 0x3c) == 0)
589 priv->ver |= TDA8275;
590 else
591 priv->ver |= TDA8275A;
592
593 tda827x_attach(fe, priv->tda827x_addr,
594 priv->i2c_props.adap, &priv->cfg);
595 }
596 if (fe->ops.tuner_ops.init)
597 fe->ops.tuner_ops.init(fe);
598
599 if (fe->ops.tuner_ops.sleep)
600 fe->ops.tuner_ops.sleep(fe);
601
602 analog_ops->i2c_gate_ctrl(fe, 0);
603
604 return 0;
605 }
606
607 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
608 {
609 #define TDA8290_ID 0x89
610 unsigned char tda8290_id[] = { 0x1f, 0x00 };
611
612 /* detect tda8290 */
613 tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
614 tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);
615
616 if (tda8290_id[1] == TDA8290_ID) {
617 if (debug)
618 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
619 __FUNCTION__, i2c_adapter_id(i2c_props->adap),
620 i2c_props->addr);
621 return 0;
622 }
623
624 return -ENODEV;
625 }
626
627 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
628 {
629 #define TDA8295_ID 0x8a
630 unsigned char tda8295_id[] = { 0x2f, 0x00 };
631
632 /* detect tda8295 */
633 tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1);
634 tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1);
635
636 if (tda8295_id[1] == TDA8295_ID) {
637 if (debug)
638 printk(KERN_DEBUG "%s: tda8295 detected @ %d-%04x\n",
639 __FUNCTION__, i2c_adapter_id(i2c_props->adap),
640 i2c_props->addr);
641 return 0;
642 }
643
644 return -ENODEV;
645 }
646
647 static struct analog_demod_ops tda8290_ops = {
648 .set_params = tda8290_set_params,
649 .has_signal = tda8290_has_signal,
650 .standby = tda8290_standby,
651 .release = tda829x_release,
652 .i2c_gate_ctrl = tda8290_i2c_bridge,
653 };
654
655 static struct analog_demod_ops tda8295_ops = {
656 .set_params = tda8295_set_params,
657 .has_signal = tda8295_has_signal,
658 .standby = tda8295_standby,
659 .release = tda829x_release,
660 .i2c_gate_ctrl = tda8295_i2c_bridge,
661 };
662
663 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
664 struct i2c_adapter *i2c_adap, u8 i2c_addr,
665 struct tda829x_config *cfg)
666 {
667 struct tda8290_priv *priv = NULL;
668 char *name;
669
670 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
671 if (priv == NULL)
672 return NULL;
673 fe->analog_demod_priv = priv;
674
675 priv->i2c_props.addr = i2c_addr;
676 priv->i2c_props.adap = i2c_adap;
677 if (cfg) {
678 priv->cfg.config = cfg->lna_cfg;
679 priv->cfg.tuner_callback = cfg->tuner_callback;
680 }
681
682 if (tda8290_probe(&priv->i2c_props) == 0) {
683 priv->ver = TDA8290;
684 memcpy(&fe->ops.analog_ops, &tda8290_ops,
685 sizeof(struct analog_demod_ops));
686 }
687
688 if (tda8295_probe(&priv->i2c_props) == 0) {
689 priv->ver = TDA8295;
690 memcpy(&fe->ops.analog_ops, &tda8295_ops,
691 sizeof(struct analog_demod_ops));
692 }
693
694 if ((!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) &&
695 (tda829x_find_tuner(fe) < 0))
696 goto fail;
697
698 switch (priv->ver) {
699 case TDA8290:
700 name = "tda8290";
701 break;
702 case TDA8295:
703 name = "tda8295";
704 break;
705 case TDA8290 | TDA8275:
706 name = "tda8290+75";
707 break;
708 case TDA8295 | TDA8275:
709 name = "tda8295+75";
710 break;
711 case TDA8290 | TDA8275A:
712 name = "tda8290+75a";
713 break;
714 case TDA8295 | TDA8275A:
715 name = "tda8295+75a";
716 break;
717 case TDA8290 | TDA18271:
718 name = "tda8290+18271";
719 break;
720 case TDA8295 | TDA18271:
721 name = "tda8295+18271";
722 break;
723 default:
724 goto fail;
725 }
726 tuner_info("type set to %s\n", name);
727
728 fe->ops.analog_ops.info.name = name;
729
730 if (priv->ver & TDA8290) {
731 tda8290_init_tuner(fe);
732 tda8290_init_if(fe);
733 } else if (priv->ver & TDA8295)
734 tda8295_init_if(fe);
735
736 return fe;
737
738 fail:
739 tda829x_release(fe);
740 return NULL;
741 }
742 EXPORT_SYMBOL_GPL(tda829x_attach);
743
744 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
745 {
746 struct tuner_i2c_props i2c_props = {
747 .adap = i2c_adap,
748 .addr = i2c_addr,
749 };
750
751 unsigned char soft_reset[] = { 0x00, 0x00 };
752 unsigned char easy_mode_b[] = { 0x01, 0x02 };
753 unsigned char easy_mode_g[] = { 0x01, 0x04 };
754 unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
755 unsigned char addr_dto_lsb = 0x07;
756 unsigned char data;
757 #define PROBE_BUFFER_SIZE 8
758 unsigned char buf[PROBE_BUFFER_SIZE];
759 int i;
760
761 /* rule out tda9887, which would return the same byte repeatedly */
762 tuner_i2c_xfer_send(&i2c_props, soft_reset, 1);
763 tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE);
764 for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
765 if (buf[i] != buf[0])
766 break;
767 }
768
769 /* all bytes are equal, not a tda829x - probably a tda9887 */
770 if (i == PROBE_BUFFER_SIZE)
771 return -ENODEV;
772
773 if ((tda8290_probe(&i2c_props) == 0) ||
774 (tda8295_probe(&i2c_props) == 0))
775 return 0;
776
777 /* fall back to old probing method */
778 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
779 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
780 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
781 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
782 if (data == 0) {
783 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
784 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
785 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
786 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
787 if (data == 0x7b) {
788 return 0;
789 }
790 }
791 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
792 return -ENODEV;
793 }
794 EXPORT_SYMBOL_GPL(tda829x_probe);
795
796 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
797 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
798 MODULE_LICENSE("GPL");
799
800 /*
801 * Overrides for Emacs so that we follow Linus's tabbing style.
802 * ---------------------------------------------------------------------------
803 * Local variables:
804 * c-basic-offset: 8
805 * End:
806 */
807
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