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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / media / common / tuners / tda8290.c
blob8c4852114eeb41a06f6ff8406991957c6c01274a
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/slab.h>
25 #include <linux/delay.h>
26 #include <linux/videodev2.h>
27 #include "tuner-i2c.h"
28 #include "tda8290.h"
29 #include "tda827x.h"
30 #include "tda18271.h"
31
32 static int debug;
33 module_param(debug, int, 0644);
34 MODULE_PARM_DESC(debug, "enable verbose debug messages");
35
36 static int deemphasis_50;
37 module_param(deemphasis_50, int, 0644);
38 MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis");
39
40 /* ---------------------------------------------------------------------- */
41
42 struct tda8290_priv {
43 struct tuner_i2c_props i2c_props;
44
45 unsigned char tda8290_easy_mode;
46
47 unsigned char tda827x_addr;
48
49 unsigned char ver;
50 #define TDA8290 1
51 #define TDA8295 2
52 #define TDA8275 4
53 #define TDA8275A 8
54 #define TDA18271 16
55
56 struct tda827x_config cfg;
57 };
58
59 /*---------------------------------------------------------------------*/
60
61 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
62 {
63 struct tda8290_priv *priv = fe->analog_demod_priv;
64
65 unsigned char enable[2] = { 0x21, 0xC0 };
66 unsigned char disable[2] = { 0x21, 0x00 };
67 unsigned char *msg;
68
69 if (close) {
70 msg = enable;
71 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
72 /* let the bridge stabilize */
73 msleep(20);
74 } else {
75 msg = disable;
76 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
77 }
78
79 return 0;
80 }
81
82 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
83 {
84 struct tda8290_priv *priv = fe->analog_demod_priv;
85
86 unsigned char enable[2] = { 0x45, 0xc1 };
87 unsigned char disable[2] = { 0x46, 0x00 };
88 unsigned char buf[3] = { 0x45, 0x01, 0x00 };
89 unsigned char *msg;
90
91 if (close) {
92 msg = enable;
93 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
94 /* let the bridge stabilize */
95 msleep(20);
96 } else {
97 msg = disable;
98 tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1);
99
100 buf[2] = msg[1];
101 buf[2] &= ~0x04;
102 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
103 msleep(5);
104
105 msg[1] |= 0x04;
106 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
107 }
108
109 return 0;
110 }
111
112 /*---------------------------------------------------------------------*/
113
114 static void set_audio(struct dvb_frontend *fe,
115 struct analog_parameters *params)
116 {
117 struct tda8290_priv *priv = fe->analog_demod_priv;
118 char* mode;
119
120 if (params->std & V4L2_STD_MN) {
121 priv->tda8290_easy_mode = 0x01;
122 mode = "MN";
123 } else if (params->std & V4L2_STD_B) {
124 priv->tda8290_easy_mode = 0x02;
125 mode = "B";
126 } else if (params->std & V4L2_STD_GH) {
127 priv->tda8290_easy_mode = 0x04;
128 mode = "GH";
129 } else if (params->std & V4L2_STD_PAL_I) {
130 priv->tda8290_easy_mode = 0x08;
131 mode = "I";
132 } else if (params->std & V4L2_STD_DK) {
133 priv->tda8290_easy_mode = 0x10;
134 mode = "DK";
135 } else if (params->std & V4L2_STD_SECAM_L) {
136 priv->tda8290_easy_mode = 0x20;
137 mode = "L";
138 } else if (params->std & V4L2_STD_SECAM_LC) {
139 priv->tda8290_easy_mode = 0x40;
140 mode = "LC";
141 } else {
142 priv->tda8290_easy_mode = 0x10;
143 mode = "xx";
144 }
145
146 if (params->mode == V4L2_TUNER_RADIO) {
147 /* Set TDA8295 to FM radio; Start TDA8290 with MN values */
148 priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01;
149 tuner_dbg("setting to radio FM\n");
150 } else {
151 tuner_dbg("setting tda829x to system %s\n", mode);
152 }
153 }
154
155 static struct {
156 unsigned char seq[2];
157 } fm_mode[] = {
158 { { 0x01, 0x81} }, /* Put device into expert mode */
159 { { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */
160 { { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */
161 { { 0x05, 0x04} }, /* ADC headroom */
162 { { 0x06, 0x10} }, /* group delay flat */
163
164 { { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */
165 { { 0x08, 0x00} },
166 { { 0x09, 0x80} },
167 { { 0x0a, 0xda} },
168 { { 0x0b, 0x4b} },
169 { { 0x0c, 0x68} },
170
171 { { 0x0d, 0x00} }, /* PLL off, no video carrier detect */
172 { { 0x14, 0x00} }, /* disable auto mute if no video */
173 };
174
175 static void tda8290_set_params(struct dvb_frontend *fe,
176 struct analog_parameters *params)
177 {
178 struct tda8290_priv *priv = fe->analog_demod_priv;
179
180 unsigned char soft_reset[] = { 0x00, 0x00 };
181 unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode };
182 unsigned char expert_mode[] = { 0x01, 0x80 };
183 unsigned char agc_out_on[] = { 0x02, 0x00 };
184 unsigned char gainset_off[] = { 0x28, 0x14 };
185 unsigned char if_agc_spd[] = { 0x0f, 0x88 };
186 unsigned char adc_head_6[] = { 0x05, 0x04 };
187 unsigned char adc_head_9[] = { 0x05, 0x02 };
188 unsigned char adc_head_12[] = { 0x05, 0x01 };
189 unsigned char pll_bw_nom[] = { 0x0d, 0x47 };
190 unsigned char pll_bw_low[] = { 0x0d, 0x27 };
191 unsigned char gainset_2[] = { 0x28, 0x64 };
192 unsigned char agc_rst_on[] = { 0x0e, 0x0b };
193 unsigned char agc_rst_off[] = { 0x0e, 0x09 };
194 unsigned char if_agc_set[] = { 0x0f, 0x81 };
195 unsigned char addr_adc_sat = 0x1a;
196 unsigned char addr_agc_stat = 0x1d;
197 unsigned char addr_pll_stat = 0x1b;
198 unsigned char adc_sat, agc_stat,
199 pll_stat;
200 int i;
201
202 set_audio(fe, params);
203
204 if (priv->cfg.config)
205 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
206 tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
207 tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
208 tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
209 msleep(1);
210
211 if (params->mode == V4L2_TUNER_RADIO) {
212 unsigned char deemphasis[] = { 0x13, 1 };
213
214 /* FIXME: allow using a different deemphasis */
215
216 if (deemphasis_50)
217 deemphasis[1] = 2;
218
219 for (i = 0; i < ARRAY_SIZE(fm_mode); i++)
220 tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);
221
222 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);
223 } else {
224 expert_mode[1] = priv->tda8290_easy_mode + 0x80;
225 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
226 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
227 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
228 if (priv->tda8290_easy_mode & 0x60)
229 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
230 else
231 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
232 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
233 }
234
235
236 tda8290_i2c_bridge(fe, 1);
237
238 if (fe->ops.tuner_ops.set_analog_params)
239 fe->ops.tuner_ops.set_analog_params(fe, params);
240
241 for (i = 0; i < 3; i++) {
242 tuner_i2c_xfer_send_recv(&priv->i2c_props,
243 &addr_pll_stat, 1, &pll_stat, 1);
244 if (pll_stat & 0x80) {
245 tuner_i2c_xfer_send_recv(&priv->i2c_props,
246 &addr_adc_sat, 1,
247 &adc_sat, 1);
248 tuner_i2c_xfer_send_recv(&priv->i2c_props,
249 &addr_agc_stat, 1,
250 &agc_stat, 1);
251 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
252 break;
253 } else {
254 tuner_dbg("tda8290 not locked, no signal?\n");
255 msleep(100);
256 }
257 }
258 /* adjust headroom resp. gain */
259 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
260 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
261 agc_stat, adc_sat, pll_stat & 0x80);
262 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
263 msleep(100);
264 tuner_i2c_xfer_send_recv(&priv->i2c_props,
265 &addr_agc_stat, 1, &agc_stat, 1);
266 tuner_i2c_xfer_send_recv(&priv->i2c_props,
267 &addr_pll_stat, 1, &pll_stat, 1);
268 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
269 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
270 agc_stat, pll_stat & 0x80);
271 if (priv->cfg.agcf)
272 priv->cfg.agcf(fe);
273 msleep(100);
274 tuner_i2c_xfer_send_recv(&priv->i2c_props,
275 &addr_agc_stat, 1,
276 &agc_stat, 1);
277 tuner_i2c_xfer_send_recv(&priv->i2c_props,
278 &addr_pll_stat, 1,
279 &pll_stat, 1);
280 if((agc_stat > 115) || !(pll_stat & 0x80)) {
281 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
282 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
283 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
284 msleep(100);
285 }
286 }
287 }
288
289 /* l/ l' deadlock? */
290 if(priv->tda8290_easy_mode & 0x60) {
291 tuner_i2c_xfer_send_recv(&priv->i2c_props,
292 &addr_adc_sat, 1,
293 &adc_sat, 1);
294 tuner_i2c_xfer_send_recv(&priv->i2c_props,
295 &addr_pll_stat, 1,
296 &pll_stat, 1);
297 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
298 tuner_dbg("trying to resolve SECAM L deadlock\n");
299 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
300 msleep(40);
301 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
302 }
303 }
304
305 tda8290_i2c_bridge(fe, 0);
306 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
307 }
308
309 /*---------------------------------------------------------------------*/
310
311 static void tda8295_power(struct dvb_frontend *fe, int enable)
312 {
313 struct tda8290_priv *priv = fe->analog_demod_priv;
314 unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
315
316 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
317
318 if (enable)
319 buf[1] = 0x01;
320 else
321 buf[1] = 0x03;
322
323 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
324 }
325
326 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
327 {
328 struct tda8290_priv *priv = fe->analog_demod_priv;
329 unsigned char buf[] = { 0x01, 0x00 };
330
331 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
332
333 if (enable)
334 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
335 else
336 buf[1] = 0x00; /* reset active bit */
337
338 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
339 }
340
341 static void tda8295_set_video_std(struct dvb_frontend *fe)
342 {
343 struct tda8290_priv *priv = fe->analog_demod_priv;
344 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
345
346 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
347
348 tda8295_set_easy_mode(fe, 1);
349 msleep(20);
350 tda8295_set_easy_mode(fe, 0);
351 }
352
353 /*---------------------------------------------------------------------*/
354
355 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
356 {
357 struct tda8290_priv *priv = fe->analog_demod_priv;
358 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
359
360 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
361
362 if (enable)
363 buf[1] &= ~0x40;
364 else
365 buf[1] |= 0x40;
366
367 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
368 }
369
370 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
371 {
372 struct tda8290_priv *priv = fe->analog_demod_priv;
373 unsigned char set_gpio_cf[] = { 0x44, 0x00 };
374 unsigned char set_gpio_val[] = { 0x46, 0x00 };
375
376 tuner_i2c_xfer_send_recv(&priv->i2c_props,
377 &set_gpio_cf[0], 1, &set_gpio_cf[1], 1);
378 tuner_i2c_xfer_send_recv(&priv->i2c_props,
379 &set_gpio_val[0], 1, &set_gpio_val[1], 1);
380
381 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
382
383 if (enable) {
384 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */
385 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
386 }
387 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
388 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
389 }
390
391 static int tda8295_has_signal(struct dvb_frontend *fe)
392 {
393 struct tda8290_priv *priv = fe->analog_demod_priv;
394
395 unsigned char hvpll_stat = 0x26;
396 unsigned char ret;
397
398 tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1);
399 return (ret & 0x01) ? 65535 : 0;
400 }
401
402 /*---------------------------------------------------------------------*/
403
404 static void tda8295_set_params(struct dvb_frontend *fe,
405 struct analog_parameters *params)
406 {
407 struct tda8290_priv *priv = fe->analog_demod_priv;
408
409 unsigned char blanking_mode[] = { 0x1d, 0x00 };
410
411 set_audio(fe, params);
412
413 tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
414
415 tda8295_power(fe, 1);
416 tda8295_agc1_out(fe, 1);
417
418 tuner_i2c_xfer_send_recv(&priv->i2c_props,
419 &blanking_mode[0], 1, &blanking_mode[1], 1);
420
421 tda8295_set_video_std(fe);
422
423 blanking_mode[1] = 0x03;
424 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
425 msleep(20);
426
427 tda8295_i2c_bridge(fe, 1);
428
429 if (fe->ops.tuner_ops.set_analog_params)
430 fe->ops.tuner_ops.set_analog_params(fe, params);
431
432 if (priv->cfg.agcf)
433 priv->cfg.agcf(fe);
434
435 if (tda8295_has_signal(fe))
436 tuner_dbg("tda8295 is locked\n");
437 else
438 tuner_dbg("tda8295 not locked, no signal?\n");
439
440 tda8295_i2c_bridge(fe, 0);
441 }
442
443 /*---------------------------------------------------------------------*/
444
445 static int tda8290_has_signal(struct dvb_frontend *fe)
446 {
447 struct tda8290_priv *priv = fe->analog_demod_priv;
448
449 unsigned char i2c_get_afc[1] = { 0x1B };
450 unsigned char afc = 0;
451
452 tuner_i2c_xfer_send_recv(&priv->i2c_props,
453 i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1);
454 return (afc & 0x80)? 65535:0;
455 }
456
457 /*---------------------------------------------------------------------*/
458
459 static void tda8290_standby(struct dvb_frontend *fe)
460 {
461 struct tda8290_priv *priv = fe->analog_demod_priv;
462
463 unsigned char cb1[] = { 0x30, 0xD0 };
464 unsigned char tda8290_standby[] = { 0x00, 0x02 };
465 unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
466 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
467
468 tda8290_i2c_bridge(fe, 1);
469 if (priv->ver & TDA8275A)
470 cb1[1] = 0x90;
471 i2c_transfer(priv->i2c_props.adap, &msg, 1);
472 tda8290_i2c_bridge(fe, 0);
473 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
474 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
475 }
476
477 static void tda8295_standby(struct dvb_frontend *fe)
478 {
479 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
480
481 tda8295_power(fe, 0);
482 }
483
484 static void tda8290_init_if(struct dvb_frontend *fe)
485 {
486 struct tda8290_priv *priv = fe->analog_demod_priv;
487
488 unsigned char set_VS[] = { 0x30, 0x6F };
489 unsigned char set_GP00_CF[] = { 0x20, 0x01 };
490 unsigned char set_GP01_CF[] = { 0x20, 0x0B };
491
492 if ((priv->cfg.config == 1) || (priv->cfg.config == 2))
493 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
494 else
495 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
496 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
497 }
498
499 static void tda8295_init_if(struct dvb_frontend *fe)
500 {
501 struct tda8290_priv *priv = fe->analog_demod_priv;
502
503 static unsigned char set_adc_ctl[] = { 0x33, 0x14 };
504 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 };
505 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 };
506 static unsigned char set_pll_reg0[] = { 0x38, 0x23 };
507 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 };
508 static unsigned char set_pll_reg10[] = { 0x42, 0x61 };
509 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b };
510
511 tda8295_power(fe, 1);
512
513 tda8295_set_easy_mode(fe, 0);
514 tda8295_set_video_std(fe);
515
516 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
517 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
518 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
519 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
520 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
521 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
522 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
523
524 tda8295_agc1_out(fe, 0);
525 tda8295_agc2_out(fe, 0);
526 }
527
528 static void tda8290_init_tuner(struct dvb_frontend *fe)
529 {
530 struct tda8290_priv *priv = fe->analog_demod_priv;
531 unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
532 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
533 unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
534 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
535 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
536 .buf=tda8275_init, .len = 14};
537 if (priv->ver & TDA8275A)
538 msg.buf = tda8275a_init;
539
540 tda8290_i2c_bridge(fe, 1);
541 i2c_transfer(priv->i2c_props.adap, &msg, 1);
542 tda8290_i2c_bridge(fe, 0);
543 }
544
545 /*---------------------------------------------------------------------*/
546
547 static void tda829x_release(struct dvb_frontend *fe)
548 {
549 struct tda8290_priv *priv = fe->analog_demod_priv;
550
551 /* only try to release the tuner if we've
552 * attached it from within this module */
553 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
554 if (fe->ops.tuner_ops.release)
555 fe->ops.tuner_ops.release(fe);
556
557 kfree(fe->analog_demod_priv);
558 fe->analog_demod_priv = NULL;
559 }
560
561 static struct tda18271_config tda829x_tda18271_config = {
562 .gate = TDA18271_GATE_ANALOG,
563 };
564
565 static int tda829x_find_tuner(struct dvb_frontend *fe)
566 {
567 struct tda8290_priv *priv = fe->analog_demod_priv;
568 struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
569 int i, ret, tuners_found;
570 u32 tuner_addrs;
571 u8 data;
572 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
573
574 if (!analog_ops->i2c_gate_ctrl) {
575 printk(KERN_ERR "tda8290: no gate control were provided!\n");
576
577 return -EINVAL;
578 }
579
580 analog_ops->i2c_gate_ctrl(fe, 1);
581
582 /* probe for tuner chip */
583 tuners_found = 0;
584 tuner_addrs = 0;
585 for (i = 0x60; i <= 0x63; i++) {
586 msg.addr = i;
587 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
588 if (ret == 1) {
589 tuners_found++;
590 tuner_addrs = (tuner_addrs << 8) + i;
591 }
592 }
593 /* if there is more than one tuner, we expect the right one is
594 behind the bridge and we choose the highest address that doesn't
595 give a response now
596 */
597
598 analog_ops->i2c_gate_ctrl(fe, 0);
599
600 if (tuners_found > 1)
601 for (i = 0; i < tuners_found; i++) {
602 msg.addr = tuner_addrs & 0xff;
603 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
604 if (ret == 1)
605 tuner_addrs = tuner_addrs >> 8;
606 else
607 break;
608 }
609
610 if (tuner_addrs == 0) {
611 tuner_addrs = 0x60;
612 tuner_info("could not clearly identify tuner address, "
613 "defaulting to %x\n", tuner_addrs);
614 } else {
615 tuner_addrs = tuner_addrs & 0xff;
616 tuner_info("setting tuner address to %x\n", tuner_addrs);
617 }
618 priv->tda827x_addr = tuner_addrs;
619 msg.addr = tuner_addrs;
620
621 analog_ops->i2c_gate_ctrl(fe, 1);
622 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
623
624 if (ret != 1) {
625 tuner_warn("tuner access failed!\n");
626 analog_ops->i2c_gate_ctrl(fe, 0);
627 return -EREMOTEIO;
628 }
629
630 if ((data == 0x83) || (data == 0x84)) {
631 priv->ver |= TDA18271;
632 tda829x_tda18271_config.config = priv->cfg.config;
633 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
634 priv->i2c_props.adap, &tda829x_tda18271_config);
635 } else {
636 if ((data & 0x3c) == 0)
637 priv->ver |= TDA8275;
638 else
639 priv->ver |= TDA8275A;
640
641 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
642 priv->i2c_props.adap, &priv->cfg);
643 priv->cfg.switch_addr = priv->i2c_props.addr;
644 }
645 if (fe->ops.tuner_ops.init)
646 fe->ops.tuner_ops.init(fe);
647
648 if (fe->ops.tuner_ops.sleep)
649 fe->ops.tuner_ops.sleep(fe);
650
651 analog_ops->i2c_gate_ctrl(fe, 0);
652
653 return 0;
654 }
655
656 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
657 {
658 #define TDA8290_ID 0x89
659 u8 reg = 0x1f, id;
660 struct i2c_msg msg_read[] = {
661 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = &reg },
662 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },
663 };
664
665 /* detect tda8290 */
666 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
667 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",
668 __func__, reg);
669 return -ENODEV;
670 }
671
672 if (id == TDA8290_ID) {
673 if (debug)
674 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
675 __func__, i2c_adapter_id(i2c_props->adap),
676 i2c_props->addr);
677 return 0;
678 }
679 return -ENODEV;
680 }
681
682 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
683 {
684 #define TDA8295_ID 0x8a
685 #define TDA8295C2_ID 0x8b
686 u8 reg = 0x2f, id;
687 struct i2c_msg msg_read[] = {
688 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = &reg },
689 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },
690 };
691
692 /* detect tda8295 */
693 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
694 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",
695 __func__, reg);
696 return -ENODEV;
697 }
698
699 if ((id & 0xfe) == TDA8295_ID) {
700 if (debug)
701 printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n",
702 __func__, (id == TDA8295_ID) ?
703 "tda8295c1" : "tda8295c2",
704 i2c_adapter_id(i2c_props->adap),
705 i2c_props->addr);
706 return 0;
707 }
708
709 return -ENODEV;
710 }
711
712 static struct analog_demod_ops tda8290_ops = {
713 .set_params = tda8290_set_params,
714 .has_signal = tda8290_has_signal,
715 .standby = tda8290_standby,
716 .release = tda829x_release,
717 .i2c_gate_ctrl = tda8290_i2c_bridge,
718 };
719
720 static struct analog_demod_ops tda8295_ops = {
721 .set_params = tda8295_set_params,
722 .has_signal = tda8295_has_signal,
723 .standby = tda8295_standby,
724 .release = tda829x_release,
725 .i2c_gate_ctrl = tda8295_i2c_bridge,
726 };
727
728 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
729 struct i2c_adapter *i2c_adap, u8 i2c_addr,
730 struct tda829x_config *cfg)
731 {
732 struct tda8290_priv *priv = NULL;
733 char *name;
734
735 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
736 if (priv == NULL)
737 return NULL;
738 fe->analog_demod_priv = priv;
739
740 priv->i2c_props.addr = i2c_addr;
741 priv->i2c_props.adap = i2c_adap;
742 priv->i2c_props.name = "tda829x";
743 if (cfg)
744 priv->cfg.config = cfg->lna_cfg;
745
746 if (tda8290_probe(&priv->i2c_props) == 0) {
747 priv->ver = TDA8290;
748 memcpy(&fe->ops.analog_ops, &tda8290_ops,
749 sizeof(struct analog_demod_ops));
750 }
751
752 if (tda8295_probe(&priv->i2c_props) == 0) {
753 priv->ver = TDA8295;
754 memcpy(&fe->ops.analog_ops, &tda8295_ops,
755 sizeof(struct analog_demod_ops));
756 }
757
758 if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) {
759 tda8295_power(fe, 1);
760 if (tda829x_find_tuner(fe) < 0)
761 goto fail;
762 }
763
764 switch (priv->ver) {
765 case TDA8290:
766 name = "tda8290";
767 break;
768 case TDA8295:
769 name = "tda8295";
770 break;
771 case TDA8290 | TDA8275:
772 name = "tda8290+75";
773 break;
774 case TDA8295 | TDA8275:
775 name = "tda8295+75";
776 break;
777 case TDA8290 | TDA8275A:
778 name = "tda8290+75a";
779 break;
780 case TDA8295 | TDA8275A:
781 name = "tda8295+75a";
782 break;
783 case TDA8290 | TDA18271:
784 name = "tda8290+18271";
785 break;
786 case TDA8295 | TDA18271:
787 name = "tda8295+18271";
788 break;
789 default:
790 goto fail;
791 }
792 tuner_info("type set to %s\n", name);
793
794 fe->ops.analog_ops.info.name = name;
795
796 if (priv->ver & TDA8290) {
797 if (priv->ver & (TDA8275 | TDA8275A))
798 tda8290_init_tuner(fe);
799 tda8290_init_if(fe);
800 } else if (priv->ver & TDA8295)
801 tda8295_init_if(fe);
802
803 return fe;
804
805 fail:
806 memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops));
807
808 tda829x_release(fe);
809 return NULL;
810 }
811 EXPORT_SYMBOL_GPL(tda829x_attach);
812
813 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
814 {
815 struct tuner_i2c_props i2c_props = {
816 .adap = i2c_adap,
817 .addr = i2c_addr,
818 };
819
820 unsigned char soft_reset[] = { 0x00, 0x00 };
821 unsigned char easy_mode_b[] = { 0x01, 0x02 };
822 unsigned char easy_mode_g[] = { 0x01, 0x04 };
823 unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
824 unsigned char addr_dto_lsb = 0x07;
825 unsigned char data;
826 #define PROBE_BUFFER_SIZE 8
827 unsigned char buf[PROBE_BUFFER_SIZE];
828 int i;
829
830 /* rule out tda9887, which would return the same byte repeatedly */
831 tuner_i2c_xfer_send_recv(&i2c_props,
832 soft_reset, 1, buf, PROBE_BUFFER_SIZE);
833 for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
834 if (buf[i] != buf[0])
835 break;
836 }
837
838 /* all bytes are equal, not a tda829x - probably a tda9887 */
839 if (i == PROBE_BUFFER_SIZE)
840 return -ENODEV;
841
842 if ((tda8290_probe(&i2c_props) == 0) ||
843 (tda8295_probe(&i2c_props) == 0))
844 return 0;
845
846 /* fall back to old probing method */
847 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
848 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
849 tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1);
850 if (data == 0) {
851 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
852 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
853 tuner_i2c_xfer_send_recv(&i2c_props,
854 &addr_dto_lsb, 1, &data, 1);
855 if (data == 0x7b) {
856 return 0;
857 }
858 }
859 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
860 return -ENODEV;
861 }
862 EXPORT_SYMBOL_GPL(tda829x_probe);
863
864 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
865 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
866 MODULE_LICENSE("GPL");
867
868 /*
869 * Overrides for Emacs so that we follow Linus's tabbing style.
870 * ---------------------------------------------------------------------------
871 * Local variables:
872 * c-basic-offset: 8
873 * End:
874 */