Merge branch 'linus' into x86/mm
[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 static int deemphasis_50;
36 MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis");
37
38 /* ---------------------------------------------------------------------- */
39
40 struct tda8290_priv {
41         struct tuner_i2c_props i2c_props;
42
43         unsigned char tda8290_easy_mode;
44
45         unsigned char tda827x_addr;
46
47         unsigned char ver;
48 #define TDA8290   1
49 #define TDA8295   2
50 #define TDA8275   4
51 #define TDA8275A  8
52 #define TDA18271 16
53
54         struct tda827x_config cfg;
55 };
56
57 /*---------------------------------------------------------------------*/
58
59 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
60 {
61         struct tda8290_priv *priv = fe->analog_demod_priv;
62
63         unsigned char  enable[2] = { 0x21, 0xC0 };
64         unsigned char disable[2] = { 0x21, 0x00 };
65         unsigned char *msg;
66
67         if (close) {
68                 msg = enable;
69                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
70                 /* let the bridge stabilize */
71                 msleep(20);
72         } else {
73                 msg = disable;
74                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
75         }
76
77         return 0;
78 }
79
80 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
81 {
82         struct tda8290_priv *priv = fe->analog_demod_priv;
83
84         unsigned char  enable[2] = { 0x45, 0xc1 };
85         unsigned char disable[2] = { 0x46, 0x00 };
86         unsigned char buf[3] = { 0x45, 0x01, 0x00 };
87         unsigned char *msg;
88
89         if (close) {
90                 msg = enable;
91                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
92                 /* let the bridge stabilize */
93                 msleep(20);
94         } else {
95                 msg = disable;
96                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 1);
97                 tuner_i2c_xfer_recv(&priv->i2c_props, &msg[1], 1);
98
99                 buf[2] = msg[1];
100                 buf[2] &= ~0x04;
101                 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
102                 msleep(5);
103
104                 msg[1] |= 0x04;
105                 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
106         }
107
108         return 0;
109 }
110
111 /*---------------------------------------------------------------------*/
112
113 static void set_audio(struct dvb_frontend *fe,
114                       struct analog_parameters *params)
115 {
116         struct tda8290_priv *priv = fe->analog_demod_priv;
117         char* mode;
118
119         if (params->std & V4L2_STD_MN) {
120                 priv->tda8290_easy_mode = 0x01;
121                 mode = "MN";
122         } else if (params->std & V4L2_STD_B) {
123                 priv->tda8290_easy_mode = 0x02;
124                 mode = "B";
125         } else if (params->std & V4L2_STD_GH) {
126                 priv->tda8290_easy_mode = 0x04;
127                 mode = "GH";
128         } else if (params->std & V4L2_STD_PAL_I) {
129                 priv->tda8290_easy_mode = 0x08;
130                 mode = "I";
131         } else if (params->std & V4L2_STD_DK) {
132                 priv->tda8290_easy_mode = 0x10;
133                 mode = "DK";
134         } else if (params->std & V4L2_STD_SECAM_L) {
135                 priv->tda8290_easy_mode = 0x20;
136                 mode = "L";
137         } else if (params->std & V4L2_STD_SECAM_LC) {
138                 priv->tda8290_easy_mode = 0x40;
139                 mode = "LC";
140         } else {
141                 priv->tda8290_easy_mode = 0x10;
142                 mode = "xx";
143         }
144
145         if (params->mode == V4L2_TUNER_RADIO) {
146                 priv->tda8290_easy_mode = 0x01;         /* Start with MN values */
147                 tuner_dbg("setting to radio FM\n");
148         } else {
149                 tuner_dbg("setting tda829x to system %s\n", mode);
150         }
151 }
152
153 static struct {
154         unsigned char seq[2];
155 } fm_mode[] = {
156         { { 0x01, 0x81} },      /* Put device into expert mode */
157         { { 0x03, 0x48} },      /* Disable NOTCH and VIDEO filters */
158         { { 0x04, 0x04} },      /* Disable color carrier filter (SSIF) */
159         { { 0x05, 0x04} },      /* ADC headroom */
160         { { 0x06, 0x10} },      /* group delay flat */
161
162         { { 0x07, 0x00} },      /* use the same radio DTO values as a tda8295 */
163         { { 0x08, 0x00} },
164         { { 0x09, 0x80} },
165         { { 0x0a, 0xda} },
166         { { 0x0b, 0x4b} },
167         { { 0x0c, 0x68} },
168
169         { { 0x0d, 0x00} },      /* PLL off, no video carrier detect */
170         { { 0x14, 0x00} },      /* disable auto mute if no video */
171 };
172
173 static void tda8290_set_params(struct dvb_frontend *fe,
174                                struct analog_parameters *params)
175 {
176         struct tda8290_priv *priv = fe->analog_demod_priv;
177
178         unsigned char soft_reset[]  = { 0x00, 0x00 };
179         unsigned char easy_mode[]   = { 0x01, priv->tda8290_easy_mode };
180         unsigned char expert_mode[] = { 0x01, 0x80 };
181         unsigned char agc_out_on[]  = { 0x02, 0x00 };
182         unsigned char gainset_off[] = { 0x28, 0x14 };
183         unsigned char if_agc_spd[]  = { 0x0f, 0x88 };
184         unsigned char adc_head_6[]  = { 0x05, 0x04 };
185         unsigned char adc_head_9[]  = { 0x05, 0x02 };
186         unsigned char adc_head_12[] = { 0x05, 0x01 };
187         unsigned char pll_bw_nom[]  = { 0x0d, 0x47 };
188         unsigned char pll_bw_low[]  = { 0x0d, 0x27 };
189         unsigned char gainset_2[]   = { 0x28, 0x64 };
190         unsigned char agc_rst_on[]  = { 0x0e, 0x0b };
191         unsigned char agc_rst_off[] = { 0x0e, 0x09 };
192         unsigned char if_agc_set[]  = { 0x0f, 0x81 };
193         unsigned char addr_adc_sat  = 0x1a;
194         unsigned char addr_agc_stat = 0x1d;
195         unsigned char addr_pll_stat = 0x1b;
196         unsigned char adc_sat, agc_stat,
197                       pll_stat;
198         int i;
199
200         set_audio(fe, params);
201
202         if (priv->cfg.config)
203                 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
204         tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
205         tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
206         tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
207         msleep(1);
208
209         if (params->mode == V4L2_TUNER_RADIO) {
210                 unsigned char deemphasis[]  = { 0x13, 1 };
211
212                 /* FIXME: allow using a different deemphasis */
213
214                 if (deemphasis_50)
215                         deemphasis[1] = 2;
216
217                 for (i = 0; i < ARRAY_SIZE(fm_mode); i++)
218                         tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);
219
220                 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);
221         } else {
222                 expert_mode[1] = priv->tda8290_easy_mode + 0x80;
223                 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
224                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
225                 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
226                 if (priv->tda8290_easy_mode & 0x60)
227                         tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
228                 else
229                         tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
230                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
231         }
232
233         tda8290_i2c_bridge(fe, 1);
234
235         if (fe->ops.tuner_ops.set_analog_params)
236                 fe->ops.tuner_ops.set_analog_params(fe, params);
237
238         for (i = 0; i < 3; i++) {
239                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
240                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
241                 if (pll_stat & 0x80) {
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_agc_stat, 1);
245                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
246                         tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
247                         break;
248                 } else {
249                         tuner_dbg("tda8290 not locked, no signal?\n");
250                         msleep(100);
251                 }
252         }
253         /* adjust headroom resp. gain */
254         if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
255                 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
256                            agc_stat, adc_sat, pll_stat & 0x80);
257                 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
258                 msleep(100);
259                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
260                 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
261                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
262                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
263                 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
264                         tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
265                                    agc_stat, pll_stat & 0x80);
266                         if (priv->cfg.agcf)
267                                 priv->cfg.agcf(fe);
268                         msleep(100);
269                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
270                         tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
271                         tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
272                         tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
273                         if((agc_stat > 115) || !(pll_stat & 0x80)) {
274                                 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
275                                 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
276                                 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
277                                 msleep(100);
278                         }
279                 }
280         }
281
282         /* l/ l' deadlock? */
283         if(priv->tda8290_easy_mode & 0x60) {
284                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
285                 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
286                 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
287                 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
288                 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
289                         tuner_dbg("trying to resolve SECAM L deadlock\n");
290                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
291                         msleep(40);
292                         tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
293                 }
294         }
295
296         tda8290_i2c_bridge(fe, 0);
297         tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
298 }
299
300 /*---------------------------------------------------------------------*/
301
302 static void tda8295_power(struct dvb_frontend *fe, int enable)
303 {
304         struct tda8290_priv *priv = fe->analog_demod_priv;
305         unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
306
307         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
308         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
309
310         if (enable)
311                 buf[1] = 0x01;
312         else
313                 buf[1] = 0x03;
314
315         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
316 }
317
318 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
319 {
320         struct tda8290_priv *priv = fe->analog_demod_priv;
321         unsigned char buf[] = { 0x01, 0x00 };
322
323         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
324         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
325
326         if (enable)
327                 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
328         else
329                 buf[1] = 0x00; /* reset active bit */
330
331         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
332 }
333
334 static void tda8295_set_video_std(struct dvb_frontend *fe)
335 {
336         struct tda8290_priv *priv = fe->analog_demod_priv;
337         unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
338
339         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
340
341         tda8295_set_easy_mode(fe, 1);
342         msleep(20);
343         tda8295_set_easy_mode(fe, 0);
344 }
345
346 /*---------------------------------------------------------------------*/
347
348 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
349 {
350         struct tda8290_priv *priv = fe->analog_demod_priv;
351         unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
352
353         tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
354         tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
355
356         if (enable)
357                 buf[1] &= ~0x40;
358         else
359                 buf[1] |= 0x40;
360
361         tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
362 }
363
364 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
365 {
366         struct tda8290_priv *priv = fe->analog_demod_priv;
367         unsigned char set_gpio_cf[]    = { 0x44, 0x00 };
368         unsigned char set_gpio_val[]   = { 0x46, 0x00 };
369
370         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1);
371         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1);
372         tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1);
373         tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1);
374
375         set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
376
377         if (enable) {
378                 set_gpio_cf[1]  |= 0x01; /* config GPIO_0 as Open Drain Out */
379                 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
380         }
381         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
382         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
383 }
384
385 static int tda8295_has_signal(struct dvb_frontend *fe)
386 {
387         struct tda8290_priv *priv = fe->analog_demod_priv;
388
389         unsigned char hvpll_stat = 0x26;
390         unsigned char ret;
391
392         tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1);
393         tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1);
394         return (ret & 0x01) ? 65535 : 0;
395 }
396
397 /*---------------------------------------------------------------------*/
398
399 static void tda8295_set_params(struct dvb_frontend *fe,
400                                struct analog_parameters *params)
401 {
402         struct tda8290_priv *priv = fe->analog_demod_priv;
403
404         unsigned char blanking_mode[]     = { 0x1d, 0x00 };
405
406         set_audio(fe, params);
407
408         tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
409
410         tda8295_power(fe, 1);
411         tda8295_agc1_out(fe, 1);
412
413         tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1);
414         tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1);
415
416         tda8295_set_video_std(fe);
417
418         blanking_mode[1] = 0x03;
419         tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
420         msleep(20);
421
422         tda8295_i2c_bridge(fe, 1);
423
424         if (fe->ops.tuner_ops.set_analog_params)
425                 fe->ops.tuner_ops.set_analog_params(fe, params);
426
427         if (priv->cfg.agcf)
428                 priv->cfg.agcf(fe);
429
430         if (tda8295_has_signal(fe))
431                 tuner_dbg("tda8295 is locked\n");
432         else
433                 tuner_dbg("tda8295 not locked, no signal?\n");
434
435         tda8295_i2c_bridge(fe, 0);
436 }
437
438 /*---------------------------------------------------------------------*/
439
440 static int tda8290_has_signal(struct dvb_frontend *fe)
441 {
442         struct tda8290_priv *priv = fe->analog_demod_priv;
443
444         unsigned char i2c_get_afc[1] = { 0x1B };
445         unsigned char afc = 0;
446
447         tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
448         tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);
449         return (afc & 0x80)? 65535:0;
450 }
451
452 /*---------------------------------------------------------------------*/
453
454 static void tda8290_standby(struct dvb_frontend *fe)
455 {
456         struct tda8290_priv *priv = fe->analog_demod_priv;
457
458         unsigned char cb1[] = { 0x30, 0xD0 };
459         unsigned char tda8290_standby[] = { 0x00, 0x02 };
460         unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
461         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
462
463         tda8290_i2c_bridge(fe, 1);
464         if (priv->ver & TDA8275A)
465                 cb1[1] = 0x90;
466         i2c_transfer(priv->i2c_props.adap, &msg, 1);
467         tda8290_i2c_bridge(fe, 0);
468         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
469         tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
470 }
471
472 static void tda8295_standby(struct dvb_frontend *fe)
473 {
474         tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
475
476         tda8295_power(fe, 0);
477 }
478
479 static void tda8290_init_if(struct dvb_frontend *fe)
480 {
481         struct tda8290_priv *priv = fe->analog_demod_priv;
482
483         unsigned char set_VS[] = { 0x30, 0x6F };
484         unsigned char set_GP00_CF[] = { 0x20, 0x01 };
485         unsigned char set_GP01_CF[] = { 0x20, 0x0B };
486
487         if ((priv->cfg.config == 1) || (priv->cfg.config == 2))
488                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
489         else
490                 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
491         tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
492 }
493
494 static void tda8295_init_if(struct dvb_frontend *fe)
495 {
496         struct tda8290_priv *priv = fe->analog_demod_priv;
497
498         static unsigned char set_adc_ctl[]       = { 0x33, 0x14 };
499         static unsigned char set_adc_ctl2[]      = { 0x34, 0x00 };
500         static unsigned char set_pll_reg6[]      = { 0x3e, 0x63 };
501         static unsigned char set_pll_reg0[]      = { 0x38, 0x23 };
502         static unsigned char set_pll_reg7[]      = { 0x3f, 0x01 };
503         static unsigned char set_pll_reg10[]     = { 0x42, 0x61 };
504         static unsigned char set_gpio_reg0[]     = { 0x44, 0x0b };
505
506         tda8295_power(fe, 1);
507
508         tda8295_set_easy_mode(fe, 0);
509         tda8295_set_video_std(fe);
510
511         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
512         tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
513         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
514         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
515         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
516         tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
517         tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
518
519         tda8295_agc1_out(fe, 0);
520         tda8295_agc2_out(fe, 0);
521 }
522
523 static void tda8290_init_tuner(struct dvb_frontend *fe)
524 {
525         struct tda8290_priv *priv = fe->analog_demod_priv;
526         unsigned char tda8275_init[]  = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
527                                           0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
528         unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
529                                           0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
530         struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
531                               .buf=tda8275_init, .len = 14};
532         if (priv->ver & TDA8275A)
533                 msg.buf = tda8275a_init;
534
535         tda8290_i2c_bridge(fe, 1);
536         i2c_transfer(priv->i2c_props.adap, &msg, 1);
537         tda8290_i2c_bridge(fe, 0);
538 }
539
540 /*---------------------------------------------------------------------*/
541
542 static void tda829x_release(struct dvb_frontend *fe)
543 {
544         struct tda8290_priv *priv = fe->analog_demod_priv;
545
546         /* only try to release the tuner if we've
547          * attached it from within this module */
548         if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
549                 if (fe->ops.tuner_ops.release)
550                         fe->ops.tuner_ops.release(fe);
551
552         kfree(fe->analog_demod_priv);
553         fe->analog_demod_priv = NULL;
554 }
555
556 static struct tda18271_config tda829x_tda18271_config = {
557         .gate    = TDA18271_GATE_ANALOG,
558 };
559
560 static int tda829x_find_tuner(struct dvb_frontend *fe)
561 {
562         struct tda8290_priv *priv = fe->analog_demod_priv;
563         struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
564         int i, ret, tuners_found;
565         u32 tuner_addrs;
566         u8 data;
567         struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
568
569         if (NULL == analog_ops->i2c_gate_ctrl)
570                 return -EINVAL;
571
572         analog_ops->i2c_gate_ctrl(fe, 1);
573
574         /* probe for tuner chip */
575         tuners_found = 0;
576         tuner_addrs = 0;
577         for (i = 0x60; i <= 0x63; i++) {
578                 msg.addr = i;
579                 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
580                 if (ret == 1) {
581                         tuners_found++;
582                         tuner_addrs = (tuner_addrs << 8) + i;
583                 }
584         }
585         /* if there is more than one tuner, we expect the right one is
586            behind the bridge and we choose the highest address that doesn't
587            give a response now
588          */
589
590         analog_ops->i2c_gate_ctrl(fe, 0);
591
592         if (tuners_found > 1)
593                 for (i = 0; i < tuners_found; i++) {
594                         msg.addr = tuner_addrs  & 0xff;
595                         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
596                         if (ret == 1)
597                                 tuner_addrs = tuner_addrs >> 8;
598                         else
599                                 break;
600                 }
601
602         if (tuner_addrs == 0) {
603                 tuner_addrs = 0x60;
604                 tuner_info("could not clearly identify tuner address, "
605                            "defaulting to %x\n", tuner_addrs);
606         } else {
607                 tuner_addrs = tuner_addrs & 0xff;
608                 tuner_info("setting tuner address to %x\n", tuner_addrs);
609         }
610         priv->tda827x_addr = tuner_addrs;
611         msg.addr = tuner_addrs;
612
613         analog_ops->i2c_gate_ctrl(fe, 1);
614         ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
615
616         if (ret != 1) {
617                 tuner_warn("tuner access failed!\n");
618                 return -EREMOTEIO;
619         }
620
621         if ((data == 0x83) || (data == 0x84)) {
622                 priv->ver |= TDA18271;
623                 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
624                            priv->i2c_props.adap, &tda829x_tda18271_config);
625         } else {
626                 if ((data & 0x3c) == 0)
627                         priv->ver |= TDA8275;
628                 else
629                         priv->ver |= TDA8275A;
630
631                 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
632                            priv->i2c_props.adap, &priv->cfg);
633                 priv->cfg.switch_addr = priv->i2c_props.addr;
634         }
635         if (fe->ops.tuner_ops.init)
636                 fe->ops.tuner_ops.init(fe);
637
638         if (fe->ops.tuner_ops.sleep)
639                 fe->ops.tuner_ops.sleep(fe);
640
641         analog_ops->i2c_gate_ctrl(fe, 0);
642
643         return 0;
644 }
645
646 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
647 {
648 #define TDA8290_ID 0x89
649         unsigned char tda8290_id[] = { 0x1f, 0x00 };
650
651         /* detect tda8290 */
652         tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
653         tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);
654
655         if (tda8290_id[1] == TDA8290_ID) {
656                 if (debug)
657                         printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
658                                __func__, i2c_adapter_id(i2c_props->adap),
659                                i2c_props->addr);
660                 return 0;
661         }
662
663         return -ENODEV;
664 }
665
666 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
667 {
668 #define TDA8295_ID 0x8a
669         unsigned char tda8295_id[] = { 0x2f, 0x00 };
670
671         /* detect tda8295 */
672         tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1);
673         tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1);
674
675         if (tda8295_id[1] == TDA8295_ID) {
676                 if (debug)
677                         printk(KERN_DEBUG "%s: tda8295 detected @ %d-%04x\n",
678                                __func__, i2c_adapter_id(i2c_props->adap),
679                                i2c_props->addr);
680                 return 0;
681         }
682
683         return -ENODEV;
684 }
685
686 static struct analog_demod_ops tda8290_ops = {
687         .set_params     = tda8290_set_params,
688         .has_signal     = tda8290_has_signal,
689         .standby        = tda8290_standby,
690         .release        = tda829x_release,
691         .i2c_gate_ctrl  = tda8290_i2c_bridge,
692 };
693
694 static struct analog_demod_ops tda8295_ops = {
695         .set_params     = tda8295_set_params,
696         .has_signal     = tda8295_has_signal,
697         .standby        = tda8295_standby,
698         .release        = tda829x_release,
699         .i2c_gate_ctrl  = tda8295_i2c_bridge,
700 };
701
702 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
703                                     struct i2c_adapter *i2c_adap, u8 i2c_addr,
704                                     struct tda829x_config *cfg)
705 {
706         struct tda8290_priv *priv = NULL;
707         char *name;
708
709         priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
710         if (priv == NULL)
711                 return NULL;
712         fe->analog_demod_priv = priv;
713
714         priv->i2c_props.addr     = i2c_addr;
715         priv->i2c_props.adap     = i2c_adap;
716         priv->i2c_props.name     = "tda829x";
717         if (cfg)
718                 priv->cfg.config         = cfg->lna_cfg;
719
720         if (tda8290_probe(&priv->i2c_props) == 0) {
721                 priv->ver = TDA8290;
722                 memcpy(&fe->ops.analog_ops, &tda8290_ops,
723                        sizeof(struct analog_demod_ops));
724         }
725
726         if (tda8295_probe(&priv->i2c_props) == 0) {
727                 priv->ver = TDA8295;
728                 memcpy(&fe->ops.analog_ops, &tda8295_ops,
729                        sizeof(struct analog_demod_ops));
730         }
731
732         if ((!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) &&
733             (tda829x_find_tuner(fe) < 0))
734                 goto fail;
735
736         switch (priv->ver) {
737         case TDA8290:
738                 name = "tda8290";
739                 break;
740         case TDA8295:
741                 name = "tda8295";
742                 break;
743         case TDA8290 | TDA8275:
744                 name = "tda8290+75";
745                 break;
746         case TDA8295 | TDA8275:
747                 name = "tda8295+75";
748                 break;
749         case TDA8290 | TDA8275A:
750                 name = "tda8290+75a";
751                 break;
752         case TDA8295 | TDA8275A:
753                 name = "tda8295+75a";
754                 break;
755         case TDA8290 | TDA18271:
756                 name = "tda8290+18271";
757                 break;
758         case TDA8295 | TDA18271:
759                 name = "tda8295+18271";
760                 break;
761         default:
762                 goto fail;
763         }
764         tuner_info("type set to %s\n", name);
765
766         fe->ops.analog_ops.info.name = name;
767
768         if (priv->ver & TDA8290) {
769                 if (priv->ver & (TDA8275 | TDA8275A))
770                         tda8290_init_tuner(fe);
771                 tda8290_init_if(fe);
772         } else if (priv->ver & TDA8295)
773                 tda8295_init_if(fe);
774
775         return fe;
776
777 fail:
778         tda829x_release(fe);
779         return NULL;
780 }
781 EXPORT_SYMBOL_GPL(tda829x_attach);
782
783 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
784 {
785         struct tuner_i2c_props i2c_props = {
786                 .adap = i2c_adap,
787                 .addr = i2c_addr,
788         };
789
790         unsigned char soft_reset[]   = { 0x00, 0x00 };
791         unsigned char easy_mode_b[]  = { 0x01, 0x02 };
792         unsigned char easy_mode_g[]  = { 0x01, 0x04 };
793         unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
794         unsigned char addr_dto_lsb = 0x07;
795         unsigned char data;
796 #define PROBE_BUFFER_SIZE 8
797         unsigned char buf[PROBE_BUFFER_SIZE];
798         int i;
799
800         /* rule out tda9887, which would return the same byte repeatedly */
801         tuner_i2c_xfer_send(&i2c_props, soft_reset, 1);
802         tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE);
803         for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
804                 if (buf[i] != buf[0])
805                         break;
806         }
807
808         /* all bytes are equal, not a tda829x - probably a tda9887 */
809         if (i == PROBE_BUFFER_SIZE)
810                 return -ENODEV;
811
812         if ((tda8290_probe(&i2c_props) == 0) ||
813             (tda8295_probe(&i2c_props) == 0))
814                 return 0;
815
816         /* fall back to old probing method */
817         tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
818         tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
819         tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
820         tuner_i2c_xfer_recv(&i2c_props, &data, 1);
821         if (data == 0) {
822                 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
823                 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
824                 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
825                 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
826                 if (data == 0x7b) {
827                         return 0;
828                 }
829         }
830         tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
831         return -ENODEV;
832 }
833 EXPORT_SYMBOL_GPL(tda829x_probe);
834
835 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
836 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
837 MODULE_LICENSE("GPL");
838
839 /*
840  * Overrides for Emacs so that we follow Linus's tabbing style.
841  * ---------------------------------------------------------------------------
842  * Local variables:
843  * c-basic-offset: 8
844  * End:
845  */