V4L/DVB (9268): tuner: add FMD1216MEX tuner
[linux-2.6] / drivers / media / common / tuners / tda8290.c
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 /* ---------------------------------------------------------------------- */
36
37 struct tda8290_priv {
38         struct tuner_i2c_props i2c_props;
39
40         unsigned char tda8290_easy_mode;
41
42         unsigned char tda827x_addr;
43
44         unsigned char ver;
45 #define TDA8290   1
46 #define TDA8295   2
47 #define TDA8275   4
48 #define TDA8275A  8
49 #define TDA18271 16
50
51         struct tda827x_config cfg;
52 };
53
54 /*---------------------------------------------------------------------*/
55
56 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
57 {
58         struct tda8290_priv *priv = fe->analog_demod_priv;
59
60         unsigned char  enable[2] = { 0x21, 0xC0 };
61         unsigned char disable[2] = { 0x21, 0x00 };
62         unsigned char *msg;
63
64         if (close) {
65                 msg = enable;
66                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
67                 /* let the bridge stabilize */
68                 msleep(20);
69         } else {
70                 msg = disable;
71                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
72         }
73
74         return 0;
75 }
76
77 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
78 {
79         struct tda8290_priv *priv = fe->analog_demod_priv;
80
81         unsigned char  enable[2] = { 0x45, 0xc1 };
82         unsigned char disable[2] = { 0x46, 0x00 };
83         unsigned char buf[3] = { 0x45, 0x01, 0x00 };
84         unsigned char *msg;
85
86         if (close) {
87                 msg = enable;
88                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
89                 /* let the bridge stabilize */
90                 msleep(20);
91         } else {
92                 msg = disable;
93                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 1);
94                 tuner_i2c_xfer_recv(&priv->i2c_props, &msg[1], 1);
95
96                 buf[2] = msg[1];
97                 buf[2] &= ~0x04;
98                 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
99                 msleep(5);
100
101                 msg[1] |= 0x04;
102                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
103         }
104
105         return 0;
106 }
107
108 /*---------------------------------------------------------------------*/
109
110 static void set_audio(struct dvb_frontend *fe,
111                       struct analog_parameters *params)
112 {
113         struct tda8290_priv *priv = fe->analog_demod_priv;
114         char* mode;
115
116         if (params->std & V4L2_STD_MN) {
117                 priv->tda8290_easy_mode = 0x01;
118                 mode = "MN";
119         } else if (params->std & V4L2_STD_B) {
120                 priv->tda8290_easy_mode = 0x02;
121                 mode = "B";
122         } else if (params->std & V4L2_STD_GH) {
123                 priv->tda8290_easy_mode = 0x04;
124                 mode = "GH";
125         } else if (params->std & V4L2_STD_PAL_I) {
126                 priv->tda8290_easy_mode = 0x08;
127                 mode = "I";
128         } else if (params->std & V4L2_STD_DK) {
129                 priv->tda8290_easy_mode = 0x10;
130                 mode = "DK";
131         } else if (params->std & V4L2_STD_SECAM_L) {
132                 priv->tda8290_easy_mode = 0x20;
133                 mode = "L";
134         } else if (params->std & V4L2_STD_SECAM_LC) {
135                 priv->tda8290_easy_mode = 0x40;
136                 mode = "LC";
137         } else {
138                 priv->tda8290_easy_mode = 0x10;
139                 mode = "xx";
140         }
141
142         tuner_dbg("setting tda829x to system %s\n", mode);
143 }
144
145 static void tda8290_set_params(struct dvb_frontend *fe,
146                                struct analog_parameters *params)
147 {
148         struct tda8290_priv *priv = fe->analog_demod_priv;
149
150         unsigned char soft_reset[]  = { 0x00, 0x00 };
151         unsigned char easy_mode[]   = { 0x01, priv->tda8290_easy_mode };
152         unsigned char expert_mode[] = { 0x01, 0x80 };
153         unsigned char agc_out_on[]  = { 0x02, 0x00 };
154         unsigned char gainset_off[] = { 0x28, 0x14 };
155         unsigned char if_agc_spd[]  = { 0x0f, 0x88 };
156         unsigned char adc_head_6[]  = { 0x05, 0x04 };
157         unsigned char adc_head_9[]  = { 0x05, 0x02 };
158         unsigned char adc_head_12[] = { 0x05, 0x01 };
159         unsigned char pll_bw_nom[]  = { 0x0d, 0x47 };
160         unsigned char pll_bw_low[]  = { 0x0d, 0x27 };
161         unsigned char gainset_2[]   = { 0x28, 0x64 };
162         unsigned char agc_rst_on[]  = { 0x0e, 0x0b };
163         unsigned char agc_rst_off[] = { 0x0e, 0x09 };
164         unsigned char if_agc_set[]  = { 0x0f, 0x81 };
165         unsigned char addr_adc_sat  = 0x1a;
166         unsigned char addr_agc_stat = 0x1d;
167         unsigned char addr_pll_stat = 0x1b;
168         unsigned char adc_sat, agc_stat,
169                       pll_stat;
170         int i;
171
172         set_audio(fe, params);
173
174         if (priv->cfg.config)
175                 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
176         tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
177         tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
178         tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
179         msleep(1);
180
181         expert_mode[1] = priv->tda8290_easy_mode + 0x80;
182         tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
183         tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
184         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
185         if (priv->tda8290_easy_mode & 0x60)
186                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
187         else
188                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
189         tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
190
191         tda8290_i2c_bridge(fe, 1);
192
193         if (fe->ops.tuner_ops.set_analog_params)
194                 fe->ops.tuner_ops.set_analog_params(fe, params);
195
196         for (i = 0; i < 3; i++) {
197                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
198                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
199                 if (pll_stat & 0x80) {
200                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
201                         tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
202                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
203                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
204                         tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
205                         break;
206                 } else {
207                         tuner_dbg("tda8290 not locked, no signal?\n");
208                         msleep(100);
209                 }
210         }
211         /* adjust headroom resp. gain */
212         if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
213                 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
214                            agc_stat, adc_sat, pll_stat & 0x80);
215                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
216                 msleep(100);
217                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
218                 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
219                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
220                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
221                 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
222                         tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
223                                    agc_stat, pll_stat & 0x80);
224                         if (priv->cfg.agcf)
225                                 priv->cfg.agcf(fe);
226                         msleep(100);
227                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
228                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
229                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
230                         tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
231                         if((agc_stat > 115) || !(pll_stat & 0x80)) {
232                                 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
233                                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
234                                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
235                                 msleep(100);
236                         }
237                 }
238         }
239
240         /* l/ l' deadlock? */
241         if(priv->tda8290_easy_mode & 0x60) {
242                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
243                 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
244                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
245                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
246                 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
247                         tuner_dbg("trying to resolve SECAM L deadlock\n");
248                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
249                         msleep(40);
250                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
251                 }
252         }
253
254         tda8290_i2c_bridge(fe, 0);
255         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
256 }
257
258 /*---------------------------------------------------------------------*/
259
260 static void tda8295_power(struct dvb_frontend *fe, int enable)
261 {
262         struct tda8290_priv *priv = fe->analog_demod_priv;
263         unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
264
265         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
266         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
267
268         if (enable)
269                 buf[1] = 0x01;
270         else
271                 buf[1] = 0x03;
272
273         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
274 }
275
276 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
277 {
278         struct tda8290_priv *priv = fe->analog_demod_priv;
279         unsigned char buf[] = { 0x01, 0x00 };
280
281         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
282         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
283
284         if (enable)
285                 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
286         else
287                 buf[1] = 0x00; /* reset active bit */
288
289         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
290 }
291
292 static void tda8295_set_video_std(struct dvb_frontend *fe)
293 {
294         struct tda8290_priv *priv = fe->analog_demod_priv;
295         unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
296
297         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
298
299         tda8295_set_easy_mode(fe, 1);
300         msleep(20);
301         tda8295_set_easy_mode(fe, 0);
302 }
303
304 /*---------------------------------------------------------------------*/
305
306 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
307 {
308         struct tda8290_priv *priv = fe->analog_demod_priv;
309         unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
310
311         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
312         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
313
314         if (enable)
315                 buf[1] &= ~0x40;
316         else
317                 buf[1] |= 0x40;
318
319         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
320 }
321
322 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
323 {
324         struct tda8290_priv *priv = fe->analog_demod_priv;
325         unsigned char set_gpio_cf[]    = { 0x44, 0x00 };
326         unsigned char set_gpio_val[]   = { 0x46, 0x00 };
327
328         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1);
329         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1);
330         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1);
331         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1);
332
333         set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
334
335         if (enable) {
336                 set_gpio_cf[1]  |= 0x01; /* config GPIO_0 as Open Drain Out */
337                 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
338         }
339         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
340         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
341 }
342
343 static int tda8295_has_signal(struct dvb_frontend *fe)
344 {
345         struct tda8290_priv *priv = fe->analog_demod_priv;
346
347         unsigned char hvpll_stat = 0x26;
348         unsigned char ret;
349
350         tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1);
351         tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1);
352         return (ret & 0x01) ? 65535 : 0;
353 }
354
355 /*---------------------------------------------------------------------*/
356
357 static void tda8295_set_params(struct dvb_frontend *fe,
358                                struct analog_parameters *params)
359 {
360         struct tda8290_priv *priv = fe->analog_demod_priv;
361
362         unsigned char blanking_mode[]     = { 0x1d, 0x00 };
363
364         set_audio(fe, params);
365
366         tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
367
368         tda8295_power(fe, 1);
369         tda8295_agc1_out(fe, 1);
370
371         tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1);
372         tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1);
373
374         tda8295_set_video_std(fe);
375
376         blanking_mode[1] = 0x03;
377         tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
378         msleep(20);
379
380         tda8295_i2c_bridge(fe, 1);
381
382         if (fe->ops.tuner_ops.set_analog_params)
383                 fe->ops.tuner_ops.set_analog_params(fe, params);
384
385         if (priv->cfg.agcf)
386                 priv->cfg.agcf(fe);
387
388         if (tda8295_has_signal(fe))
389                 tuner_dbg("tda8295 is locked\n");
390         else
391                 tuner_dbg("tda8295 not locked, no signal?\n");
392
393         tda8295_i2c_bridge(fe, 0);
394 }
395
396 /*---------------------------------------------------------------------*/
397
398 static int tda8290_has_signal(struct dvb_frontend *fe)
399 {
400         struct tda8290_priv *priv = fe->analog_demod_priv;
401
402         unsigned char i2c_get_afc[1] = { 0x1B };
403         unsigned char afc = 0;
404
405         tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
406         tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);
407         return (afc & 0x80)? 65535:0;
408 }
409
410 /*---------------------------------------------------------------------*/
411
412 static void tda8290_standby(struct dvb_frontend *fe)
413 {
414         struct tda8290_priv *priv = fe->analog_demod_priv;
415
416         unsigned char cb1[] = { 0x30, 0xD0 };
417         unsigned char tda8290_standby[] = { 0x00, 0x02 };
418         unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
419         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
420
421         tda8290_i2c_bridge(fe, 1);
422         if (priv->ver & TDA8275A)
423                 cb1[1] = 0x90;
424         i2c_transfer(priv->i2c_props.adap, &msg, 1);
425         tda8290_i2c_bridge(fe, 0);
426         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
427         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
428 }
429
430 static void tda8295_standby(struct dvb_frontend *fe)
431 {
432         tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
433
434         tda8295_power(fe, 0);
435 }
436
437 static void tda8290_init_if(struct dvb_frontend *fe)
438 {
439         struct tda8290_priv *priv = fe->analog_demod_priv;
440
441         unsigned char set_VS[] = { 0x30, 0x6F };
442         unsigned char set_GP00_CF[] = { 0x20, 0x01 };
443         unsigned char set_GP01_CF[] = { 0x20, 0x0B };
444
445         if ((priv->cfg.config == 1) || (priv->cfg.config == 2))
446                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
447         else
448                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
449         tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
450 }
451
452 static void tda8295_init_if(struct dvb_frontend *fe)
453 {
454         struct tda8290_priv *priv = fe->analog_demod_priv;
455
456         static unsigned char set_adc_ctl[]       = { 0x33, 0x14 };
457         static unsigned char set_adc_ctl2[]      = { 0x34, 0x00 };
458         static unsigned char set_pll_reg6[]      = { 0x3e, 0x63 };
459         static unsigned char set_pll_reg0[]      = { 0x38, 0x23 };
460         static unsigned char set_pll_reg7[]      = { 0x3f, 0x01 };
461         static unsigned char set_pll_reg10[]     = { 0x42, 0x61 };
462         static unsigned char set_gpio_reg0[]     = { 0x44, 0x0b };
463
464         tda8295_power(fe, 1);
465
466         tda8295_set_easy_mode(fe, 0);
467         tda8295_set_video_std(fe);
468
469         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
470         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
471         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
472         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
473         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
474         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
475         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
476
477         tda8295_agc1_out(fe, 0);
478         tda8295_agc2_out(fe, 0);
479 }
480
481 static void tda8290_init_tuner(struct dvb_frontend *fe)
482 {
483         struct tda8290_priv *priv = fe->analog_demod_priv;
484         unsigned char tda8275_init[]  = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
485                                           0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
486         unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
487                                           0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
488         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
489                               .buf=tda8275_init, .len = 14};
490         if (priv->ver & TDA8275A)
491                 msg.buf = tda8275a_init;
492
493         tda8290_i2c_bridge(fe, 1);
494         i2c_transfer(priv->i2c_props.adap, &msg, 1);
495         tda8290_i2c_bridge(fe, 0);
496 }
497
498 /*---------------------------------------------------------------------*/
499
500 static void tda829x_release(struct dvb_frontend *fe)
501 {
502         struct tda8290_priv *priv = fe->analog_demod_priv;
503
504         /* only try to release the tuner if we've
505          * attached it from within this module */
506         if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
507                 if (fe->ops.tuner_ops.release)
508                         fe->ops.tuner_ops.release(fe);
509
510         kfree(fe->analog_demod_priv);
511         fe->analog_demod_priv = NULL;
512 }
513
514 static struct tda18271_config tda829x_tda18271_config = {
515         .gate    = TDA18271_GATE_ANALOG,
516 };
517
518 static int tda829x_find_tuner(struct dvb_frontend *fe)
519 {
520         struct tda8290_priv *priv = fe->analog_demod_priv;
521         struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
522         int i, ret, tuners_found;
523         u32 tuner_addrs;
524         u8 data;
525         struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
526
527         if (NULL == analog_ops->i2c_gate_ctrl)
528                 return -EINVAL;
529
530         analog_ops->i2c_gate_ctrl(fe, 1);
531
532         /* probe for tuner chip */
533         tuners_found = 0;
534         tuner_addrs = 0;
535         for (i = 0x60; i <= 0x63; i++) {
536                 msg.addr = i;
537                 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
538                 if (ret == 1) {
539                         tuners_found++;
540                         tuner_addrs = (tuner_addrs << 8) + i;
541                 }
542         }
543         /* if there is more than one tuner, we expect the right one is
544            behind the bridge and we choose the highest address that doesn't
545            give a response now
546          */
547
548         analog_ops->i2c_gate_ctrl(fe, 0);
549
550         if (tuners_found > 1)
551                 for (i = 0; i < tuners_found; i++) {
552                         msg.addr = tuner_addrs  & 0xff;
553                         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
554                         if (ret == 1)
555                                 tuner_addrs = tuner_addrs >> 8;
556                         else
557                                 break;
558                 }
559
560         if (tuner_addrs == 0) {
561                 tuner_addrs = 0x60;
562                 tuner_info("could not clearly identify tuner address, "
563                            "defaulting to %x\n", tuner_addrs);
564         } else {
565                 tuner_addrs = tuner_addrs & 0xff;
566                 tuner_info("setting tuner address to %x\n", tuner_addrs);
567         }
568         priv->tda827x_addr = tuner_addrs;
569         msg.addr = tuner_addrs;
570
571         analog_ops->i2c_gate_ctrl(fe, 1);
572         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
573
574         if (ret != 1) {
575                 tuner_warn("tuner access failed!\n");
576                 return -EREMOTEIO;
577         }
578
579         if ((data == 0x83) || (data == 0x84)) {
580                 priv->ver |= TDA18271;
581                 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
582                            priv->i2c_props.adap, &tda829x_tda18271_config);
583         } else {
584                 if ((data & 0x3c) == 0)
585                         priv->ver |= TDA8275;
586                 else
587                         priv->ver |= TDA8275A;
588
589                 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
590                            priv->i2c_props.adap, &priv->cfg);
591                 priv->cfg.switch_addr = priv->i2c_props.addr;
592         }
593         if (fe->ops.tuner_ops.init)
594                 fe->ops.tuner_ops.init(fe);
595
596         if (fe->ops.tuner_ops.sleep)
597                 fe->ops.tuner_ops.sleep(fe);
598
599         analog_ops->i2c_gate_ctrl(fe, 0);
600
601         return 0;
602 }
603
604 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
605 {
606 #define TDA8290_ID 0x89
607         unsigned char tda8290_id[] = { 0x1f, 0x00 };
608
609         /* detect tda8290 */
610         tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
611         tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);
612
613         if (tda8290_id[1] == TDA8290_ID) {
614                 if (debug)
615                         printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
616                                __func__, i2c_adapter_id(i2c_props->adap),
617                                i2c_props->addr);
618                 return 0;
619         }
620
621         return -ENODEV;
622 }
623
624 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
625 {
626 #define TDA8295_ID 0x8a
627         unsigned char tda8295_id[] = { 0x2f, 0x00 };
628
629         /* detect tda8295 */
630         tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1);
631         tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1);
632
633         if (tda8295_id[1] == TDA8295_ID) {
634                 if (debug)
635                         printk(KERN_DEBUG "%s: tda8295 detected @ %d-%04x\n",
636                                __func__, i2c_adapter_id(i2c_props->adap),
637                                i2c_props->addr);
638                 return 0;
639         }
640
641         return -ENODEV;
642 }
643
644 static struct analog_demod_ops tda8290_ops = {
645         .set_params     = tda8290_set_params,
646         .has_signal     = tda8290_has_signal,
647         .standby        = tda8290_standby,
648         .release        = tda829x_release,
649         .i2c_gate_ctrl  = tda8290_i2c_bridge,
650 };
651
652 static struct analog_demod_ops tda8295_ops = {
653         .set_params     = tda8295_set_params,
654         .has_signal     = tda8295_has_signal,
655         .standby        = tda8295_standby,
656         .release        = tda829x_release,
657         .i2c_gate_ctrl  = tda8295_i2c_bridge,
658 };
659
660 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
661                                     struct i2c_adapter *i2c_adap, u8 i2c_addr,
662                                     struct tda829x_config *cfg)
663 {
664         struct tda8290_priv *priv = NULL;
665         char *name;
666
667         priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
668         if (priv == NULL)
669                 return NULL;
670         fe->analog_demod_priv = priv;
671
672         priv->i2c_props.addr     = i2c_addr;
673         priv->i2c_props.adap     = i2c_adap;
674         priv->i2c_props.name     = "tda829x";
675         if (cfg)
676                 priv->cfg.config         = cfg->lna_cfg;
677
678         if (tda8290_probe(&priv->i2c_props) == 0) {
679                 priv->ver = TDA8290;
680                 memcpy(&fe->ops.analog_ops, &tda8290_ops,
681                        sizeof(struct analog_demod_ops));
682         }
683
684         if (tda8295_probe(&priv->i2c_props) == 0) {
685                 priv->ver = TDA8295;
686                 memcpy(&fe->ops.analog_ops, &tda8295_ops,
687                        sizeof(struct analog_demod_ops));
688         }
689
690         if ((!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) &&
691             (tda829x_find_tuner(fe) < 0))
692                 goto fail;
693
694         switch (priv->ver) {
695         case TDA8290:
696                 name = "tda8290";
697                 break;
698         case TDA8295:
699                 name = "tda8295";
700                 break;
701         case TDA8290 | TDA8275:
702                 name = "tda8290+75";
703                 break;
704         case TDA8295 | TDA8275:
705                 name = "tda8295+75";
706                 break;
707         case TDA8290 | TDA8275A:
708                 name = "tda8290+75a";
709                 break;
710         case TDA8295 | TDA8275A:
711                 name = "tda8295+75a";
712                 break;
713         case TDA8290 | TDA18271:
714                 name = "tda8290+18271";
715                 break;
716         case TDA8295 | TDA18271:
717                 name = "tda8295+18271";
718                 break;
719         default:
720                 goto fail;
721         }
722         tuner_info("type set to %s\n", name);
723
724         fe->ops.analog_ops.info.name = name;
725
726         if (priv->ver & TDA8290) {
727                 tda8290_init_tuner(fe);
728                 tda8290_init_if(fe);
729         } else if (priv->ver & TDA8295)
730                 tda8295_init_if(fe);
731
732         return fe;
733
734 fail:
735         tda829x_release(fe);
736         return NULL;
737 }
738 EXPORT_SYMBOL_GPL(tda829x_attach);
739
740 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
741 {
742         struct tuner_i2c_props i2c_props = {
743                 .adap = i2c_adap,
744                 .addr = i2c_addr,
745         };
746
747         unsigned char soft_reset[]   = { 0x00, 0x00 };
748         unsigned char easy_mode_b[]  = { 0x01, 0x02 };
749         unsigned char easy_mode_g[]  = { 0x01, 0x04 };
750         unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
751         unsigned char addr_dto_lsb = 0x07;
752         unsigned char data;
753 #define PROBE_BUFFER_SIZE 8
754         unsigned char buf[PROBE_BUFFER_SIZE];
755         int i;
756
757         /* rule out tda9887, which would return the same byte repeatedly */
758         tuner_i2c_xfer_send(&i2c_props, soft_reset, 1);
759         tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE);
760         for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
761                 if (buf[i] != buf[0])
762                         break;
763         }
764
765         /* all bytes are equal, not a tda829x - probably a tda9887 */
766         if (i == PROBE_BUFFER_SIZE)
767                 return -ENODEV;
768
769         if ((tda8290_probe(&i2c_props) == 0) ||
770             (tda8295_probe(&i2c_props) == 0))
771                 return 0;
772
773         /* fall back to old probing method */
774         tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
775         tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
776         tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
777         tuner_i2c_xfer_recv(&i2c_props, &data, 1);
778         if (data == 0) {
779                 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
780                 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
781                 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
782                 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
783                 if (data == 0x7b) {
784                         return 0;
785                 }
786         }
787         tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
788         return -ENODEV;
789 }
790 EXPORT_SYMBOL_GPL(tda829x_probe);
791
792 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
793 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
794 MODULE_LICENSE("GPL");
795
796 /*
797  * Overrides for Emacs so that we follow Linus's tabbing style.
798  * ---------------------------------------------------------------------------
799  * Local variables:
800  * c-basic-offset: 8
801  * End:
802  */