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arm64: futex: Avoid copying out uninitialised stack in failed cmpxchg()
[linux/fpc-iii.git] / drivers / media / tuners / tda8290.c
blob9f1f1d2b8bdc4bb2581d27727ece4149d53ecdbc
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 struct tda18271_std_map *tda18271_std_map;
58 };
59
60 /*---------------------------------------------------------------------*/
61
62 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
63 {
64 struct tda8290_priv *priv = fe->analog_demod_priv;
65
66 static unsigned char enable[2] = { 0x21, 0xC0 };
67 static unsigned char disable[2] = { 0x21, 0x00 };
68 unsigned char *msg;
69
70 if (close) {
71 msg = enable;
72 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
73 /* let the bridge stabilize */
74 msleep(20);
75 } else {
76 msg = disable;
77 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
78 }
79
80 return 0;
81 }
82
83 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
84 {
85 struct tda8290_priv *priv = fe->analog_demod_priv;
86
87 static unsigned char enable[2] = { 0x45, 0xc1 };
88 static unsigned char disable[2] = { 0x46, 0x00 };
89 static unsigned char buf[3] = { 0x45, 0x01, 0x00 };
90 unsigned char *msg;
91
92 if (close) {
93 msg = enable;
94 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
95 /* let the bridge stabilize */
96 msleep(20);
97 } else {
98 msg = disable;
99 tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1);
100
101 buf[2] = msg[1];
102 buf[2] &= ~0x04;
103 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
104 msleep(5);
105
106 msg[1] |= 0x04;
107 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
108 }
109
110 return 0;
111 }
112
113 /*---------------------------------------------------------------------*/
114
115 static void set_audio(struct dvb_frontend *fe,
116 struct analog_parameters *params)
117 {
118 struct tda8290_priv *priv = fe->analog_demod_priv;
119 char* mode;
120
121 if (params->std & V4L2_STD_MN) {
122 priv->tda8290_easy_mode = 0x01;
123 mode = "MN";
124 } else if (params->std & V4L2_STD_B) {
125 priv->tda8290_easy_mode = 0x02;
126 mode = "B";
127 } else if (params->std & V4L2_STD_GH) {
128 priv->tda8290_easy_mode = 0x04;
129 mode = "GH";
130 } else if (params->std & V4L2_STD_PAL_I) {
131 priv->tda8290_easy_mode = 0x08;
132 mode = "I";
133 } else if (params->std & V4L2_STD_DK) {
134 priv->tda8290_easy_mode = 0x10;
135 mode = "DK";
136 } else if (params->std & V4L2_STD_SECAM_L) {
137 priv->tda8290_easy_mode = 0x20;
138 mode = "L";
139 } else if (params->std & V4L2_STD_SECAM_LC) {
140 priv->tda8290_easy_mode = 0x40;
141 mode = "LC";
142 } else {
143 priv->tda8290_easy_mode = 0x10;
144 mode = "xx";
145 }
146
147 if (params->mode == V4L2_TUNER_RADIO) {
148 /* Set TDA8295 to FM radio; Start TDA8290 with MN values */
149 priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01;
150 tuner_dbg("setting to radio FM\n");
151 } else {
152 tuner_dbg("setting tda829x to system %s\n", mode);
153 }
154 }
155
156 static struct {
157 unsigned char seq[2];
158 } fm_mode[] = {
159 { { 0x01, 0x81} }, /* Put device into expert mode */
160 { { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */
161 { { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */
162 { { 0x05, 0x04} }, /* ADC headroom */
163 { { 0x06, 0x10} }, /* group delay flat */
164
165 { { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */
166 { { 0x08, 0x00} },
167 { { 0x09, 0x80} },
168 { { 0x0a, 0xda} },
169 { { 0x0b, 0x4b} },
170 { { 0x0c, 0x68} },
171
172 { { 0x0d, 0x00} }, /* PLL off, no video carrier detect */
173 { { 0x14, 0x00} }, /* disable auto mute if no video */
174 };
175
176 static void tda8290_set_params(struct dvb_frontend *fe,
177 struct analog_parameters *params)
178 {
179 struct tda8290_priv *priv = fe->analog_demod_priv;
180
181 static unsigned char soft_reset[] = { 0x00, 0x00 };
182 unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode };
183 static unsigned char expert_mode[] = { 0x01, 0x80 };
184 static unsigned char agc_out_on[] = { 0x02, 0x00 };
185 static unsigned char gainset_off[] = { 0x28, 0x14 };
186 static unsigned char if_agc_spd[] = { 0x0f, 0x88 };
187 static unsigned char adc_head_6[] = { 0x05, 0x04 };
188 static unsigned char adc_head_9[] = { 0x05, 0x02 };
189 static unsigned char adc_head_12[] = { 0x05, 0x01 };
190 static unsigned char pll_bw_nom[] = { 0x0d, 0x47 };
191 static unsigned char pll_bw_low[] = { 0x0d, 0x27 };
192 static unsigned char gainset_2[] = { 0x28, 0x64 };
193 static unsigned char agc_rst_on[] = { 0x0e, 0x0b };
194 static unsigned char agc_rst_off[] = { 0x0e, 0x09 };
195 static unsigned char if_agc_set[] = { 0x0f, 0x81 };
196 static unsigned char addr_adc_sat = 0x1a;
197 static unsigned char addr_agc_stat = 0x1d;
198 static unsigned char addr_pll_stat = 0x1b;
199 static unsigned char adc_sat = 0, agc_stat = 0,
200 pll_stat;
201 int i;
202
203 set_audio(fe, params);
204
205 if (priv->cfg.config)
206 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
207 tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
208 tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
209 tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
210 msleep(1);
211
212 if (params->mode == V4L2_TUNER_RADIO) {
213 unsigned char deemphasis[] = { 0x13, 1 };
214
215 /* FIXME: allow using a different deemphasis */
216
217 if (deemphasis_50)
218 deemphasis[1] = 2;
219
220 for (i = 0; i < ARRAY_SIZE(fm_mode); i++)
221 tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);
222
223 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);
224 } else {
225 expert_mode[1] = priv->tda8290_easy_mode + 0x80;
226 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
227 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
228 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
229 if (priv->tda8290_easy_mode & 0x60)
230 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
231 else
232 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
233 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
234 }
235
236
237 if (fe->ops.analog_ops.i2c_gate_ctrl)
238 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
239
240 if (fe->ops.tuner_ops.set_analog_params)
241 fe->ops.tuner_ops.set_analog_params(fe, params);
242
243 for (i = 0; i < 3; i++) {
244 tuner_i2c_xfer_send_recv(&priv->i2c_props,
245 &addr_pll_stat, 1, &pll_stat, 1);
246 if (pll_stat & 0x80) {
247 tuner_i2c_xfer_send_recv(&priv->i2c_props,
248 &addr_adc_sat, 1,
249 &adc_sat, 1);
250 tuner_i2c_xfer_send_recv(&priv->i2c_props,
251 &addr_agc_stat, 1,
252 &agc_stat, 1);
253 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
254 break;
255 } else {
256 tuner_dbg("tda8290 not locked, no signal?\n");
257 msleep(100);
258 }
259 }
260 /* adjust headroom resp. gain */
261 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
262 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
263 agc_stat, adc_sat, pll_stat & 0x80);
264 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
265 msleep(100);
266 tuner_i2c_xfer_send_recv(&priv->i2c_props,
267 &addr_agc_stat, 1, &agc_stat, 1);
268 tuner_i2c_xfer_send_recv(&priv->i2c_props,
269 &addr_pll_stat, 1, &pll_stat, 1);
270 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
271 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
272 agc_stat, pll_stat & 0x80);
273 if (priv->cfg.agcf)
274 priv->cfg.agcf(fe);
275 msleep(100);
276 tuner_i2c_xfer_send_recv(&priv->i2c_props,
277 &addr_agc_stat, 1,
278 &agc_stat, 1);
279 tuner_i2c_xfer_send_recv(&priv->i2c_props,
280 &addr_pll_stat, 1,
281 &pll_stat, 1);
282 if((agc_stat > 115) || !(pll_stat & 0x80)) {
283 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
284 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
285 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
286 msleep(100);
287 }
288 }
289 }
290
291 /* l/ l' deadlock? */
292 if(priv->tda8290_easy_mode & 0x60) {
293 tuner_i2c_xfer_send_recv(&priv->i2c_props,
294 &addr_adc_sat, 1,
295 &adc_sat, 1);
296 tuner_i2c_xfer_send_recv(&priv->i2c_props,
297 &addr_pll_stat, 1,
298 &pll_stat, 1);
299 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
300 tuner_dbg("trying to resolve SECAM L deadlock\n");
301 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
302 msleep(40);
303 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
304 }
305 }
306
307 if (fe->ops.analog_ops.i2c_gate_ctrl)
308 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
309 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
310 }
311
312 /*---------------------------------------------------------------------*/
313
314 static void tda8295_power(struct dvb_frontend *fe, int enable)
315 {
316 struct tda8290_priv *priv = fe->analog_demod_priv;
317 unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
318
319 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
320
321 if (enable)
322 buf[1] = 0x01;
323 else
324 buf[1] = 0x03;
325
326 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
327 }
328
329 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
330 {
331 struct tda8290_priv *priv = fe->analog_demod_priv;
332 unsigned char buf[] = { 0x01, 0x00 };
333
334 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
335
336 if (enable)
337 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
338 else
339 buf[1] = 0x00; /* reset active bit */
340
341 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
342 }
343
344 static void tda8295_set_video_std(struct dvb_frontend *fe)
345 {
346 struct tda8290_priv *priv = fe->analog_demod_priv;
347 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
348
349 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
350
351 tda8295_set_easy_mode(fe, 1);
352 msleep(20);
353 tda8295_set_easy_mode(fe, 0);
354 }
355
356 /*---------------------------------------------------------------------*/
357
358 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
359 {
360 struct tda8290_priv *priv = fe->analog_demod_priv;
361 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
362
363 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);
364
365 if (enable)
366 buf[1] &= ~0x40;
367 else
368 buf[1] |= 0x40;
369
370 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
371 }
372
373 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
374 {
375 struct tda8290_priv *priv = fe->analog_demod_priv;
376 unsigned char set_gpio_cf[] = { 0x44, 0x00 };
377 unsigned char set_gpio_val[] = { 0x46, 0x00 };
378
379 tuner_i2c_xfer_send_recv(&priv->i2c_props,
380 &set_gpio_cf[0], 1, &set_gpio_cf[1], 1);
381 tuner_i2c_xfer_send_recv(&priv->i2c_props,
382 &set_gpio_val[0], 1, &set_gpio_val[1], 1);
383
384 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
385
386 if (enable) {
387 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */
388 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
389 }
390 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
391 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
392 }
393
394 static int tda8295_has_signal(struct dvb_frontend *fe, u16 *signal)
395 {
396 struct tda8290_priv *priv = fe->analog_demod_priv;
397
398 unsigned char hvpll_stat = 0x26;
399 unsigned char ret;
400
401 tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1);
402 *signal = (ret & 0x01) ? 65535 : 0;
403 return 0;
404 }
405
406 /*---------------------------------------------------------------------*/
407
408 static void tda8295_set_params(struct dvb_frontend *fe,
409 struct analog_parameters *params)
410 {
411 struct tda8290_priv *priv = fe->analog_demod_priv;
412 u16 signal = 0;
413 unsigned char blanking_mode[] = { 0x1d, 0x00 };
414
415 set_audio(fe, params);
416
417 tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
418
419 tda8295_power(fe, 1);
420 tda8295_agc1_out(fe, 1);
421
422 tuner_i2c_xfer_send_recv(&priv->i2c_props,
423 &blanking_mode[0], 1, &blanking_mode[1], 1);
424
425 tda8295_set_video_std(fe);
426
427 blanking_mode[1] = 0x03;
428 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
429 msleep(20);
430
431 if (fe->ops.analog_ops.i2c_gate_ctrl)
432 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
433
434 if (fe->ops.tuner_ops.set_analog_params)
435 fe->ops.tuner_ops.set_analog_params(fe, params);
436
437 if (priv->cfg.agcf)
438 priv->cfg.agcf(fe);
439
440 tda8295_has_signal(fe, &signal);
441 if (signal)
442 tuner_dbg("tda8295 is locked\n");
443 else
444 tuner_dbg("tda8295 not locked, no signal?\n");
445
446 if (fe->ops.analog_ops.i2c_gate_ctrl)
447 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
448 }
449
450 /*---------------------------------------------------------------------*/
451
452 static int tda8290_has_signal(struct dvb_frontend *fe, u16 *signal)
453 {
454 struct tda8290_priv *priv = fe->analog_demod_priv;
455
456 unsigned char i2c_get_afc[1] = { 0x1B };
457 unsigned char afc = 0;
458
459 tuner_i2c_xfer_send_recv(&priv->i2c_props,
460 i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1);
461 *signal = (afc & 0x80) ? 65535 : 0;
462 return 0;
463 }
464
465 /*---------------------------------------------------------------------*/
466
467 static void tda8290_standby(struct dvb_frontend *fe)
468 {
469 struct tda8290_priv *priv = fe->analog_demod_priv;
470
471 static unsigned char cb1[] = { 0x30, 0xD0 };
472 static unsigned char tda8290_standby[] = { 0x00, 0x02 };
473 static unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
474 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
475
476 if (fe->ops.analog_ops.i2c_gate_ctrl)
477 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
478 if (priv->ver & TDA8275A)
479 cb1[1] = 0x90;
480 i2c_transfer(priv->i2c_props.adap, &msg, 1);
481 if (fe->ops.analog_ops.i2c_gate_ctrl)
482 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
483 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
484 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
485 }
486
487 static void tda8295_standby(struct dvb_frontend *fe)
488 {
489 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
490
491 tda8295_power(fe, 0);
492 }
493
494 static void tda8290_init_if(struct dvb_frontend *fe)
495 {
496 struct tda8290_priv *priv = fe->analog_demod_priv;
497
498 static unsigned char set_VS[] = { 0x30, 0x6F };
499 static unsigned char set_GP00_CF[] = { 0x20, 0x01 };
500 static unsigned char set_GP01_CF[] = { 0x20, 0x0B };
501
502 if ((priv->cfg.config == TDA8290_LNA_GP0_HIGH_ON) ||
503 (priv->cfg.config == TDA8290_LNA_GP0_HIGH_OFF))
504 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
505 else
506 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
507 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
508 }
509
510 static void tda8295_init_if(struct dvb_frontend *fe)
511 {
512 struct tda8290_priv *priv = fe->analog_demod_priv;
513
514 static unsigned char set_adc_ctl[] = { 0x33, 0x14 };
515 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 };
516 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 };
517 static unsigned char set_pll_reg0[] = { 0x38, 0x23 };
518 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 };
519 static unsigned char set_pll_reg10[] = { 0x42, 0x61 };
520 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b };
521
522 tda8295_power(fe, 1);
523
524 tda8295_set_easy_mode(fe, 0);
525 tda8295_set_video_std(fe);
526
527 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
528 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
529 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
530 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
531 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
532 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
533 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
534
535 tda8295_agc1_out(fe, 0);
536 tda8295_agc2_out(fe, 0);
537 }
538
539 static void tda8290_init_tuner(struct dvb_frontend *fe)
540 {
541 struct tda8290_priv *priv = fe->analog_demod_priv;
542 static unsigned char tda8275_init[] =
543 { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
544 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
545 static unsigned char tda8275a_init[] =
546 { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
547 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
548 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
549 .buf=tda8275_init, .len = 14};
550 if (priv->ver & TDA8275A)
551 msg.buf = tda8275a_init;
552
553 if (fe->ops.analog_ops.i2c_gate_ctrl)
554 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
555 i2c_transfer(priv->i2c_props.adap, &msg, 1);
556 if (fe->ops.analog_ops.i2c_gate_ctrl)
557 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
558 }
559
560 /*---------------------------------------------------------------------*/
561
562 static void tda829x_release(struct dvb_frontend *fe)
563 {
564 struct tda8290_priv *priv = fe->analog_demod_priv;
565
566 /* only try to release the tuner if we've
567 * attached it from within this module */
568 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
569 if (fe->ops.tuner_ops.release)
570 fe->ops.tuner_ops.release(fe);
571
572 kfree(fe->analog_demod_priv);
573 fe->analog_demod_priv = NULL;
574 }
575
576 static struct tda18271_config tda829x_tda18271_config = {
577 .gate = TDA18271_GATE_ANALOG,
578 };
579
580 static int tda829x_find_tuner(struct dvb_frontend *fe)
581 {
582 struct tda8290_priv *priv = fe->analog_demod_priv;
583 int i, ret, tuners_found;
584 u32 tuner_addrs;
585 u8 data;
586 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
587
588 if (fe->ops.analog_ops.i2c_gate_ctrl)
589 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
590
591 /* probe for tuner chip */
592 tuners_found = 0;
593 tuner_addrs = 0;
594 for (i = 0x60; i <= 0x63; i++) {
595 msg.addr = i;
596 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
597 if (ret == 1) {
598 tuners_found++;
599 tuner_addrs = (tuner_addrs << 8) + i;
600 }
601 }
602 /* if there is more than one tuner, we expect the right one is
603 behind the bridge and we choose the highest address that doesn't
604 give a response now
605 */
606
607 if (fe->ops.analog_ops.i2c_gate_ctrl)
608 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
609
610 if (tuners_found > 1)
611 for (i = 0; i < tuners_found; i++) {
612 msg.addr = tuner_addrs & 0xff;
613 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
614 if (ret == 1)
615 tuner_addrs = tuner_addrs >> 8;
616 else
617 break;
618 }
619
620 if (tuner_addrs == 0) {
621 tuner_addrs = 0x60;
622 tuner_info("could not clearly identify tuner address, defaulting to %x\n",
623 tuner_addrs);
624 } else {
625 tuner_addrs = tuner_addrs & 0xff;
626 tuner_info("setting tuner address to %x\n", tuner_addrs);
627 }
628 priv->tda827x_addr = tuner_addrs;
629 msg.addr = tuner_addrs;
630
631 if (fe->ops.analog_ops.i2c_gate_ctrl)
632 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);
633 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
634
635 if (ret != 1) {
636 tuner_warn("tuner access failed!\n");
637 if (fe->ops.analog_ops.i2c_gate_ctrl)
638 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
639 return -EREMOTEIO;
640 }
641
642 if ((data == 0x83) || (data == 0x84)) {
643 priv->ver |= TDA18271;
644 tda829x_tda18271_config.config = priv->cfg.config;
645 tda829x_tda18271_config.std_map = priv->tda18271_std_map;
646 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
647 priv->i2c_props.adap, &tda829x_tda18271_config);
648 } else {
649 if ((data & 0x3c) == 0)
650 priv->ver |= TDA8275;
651 else
652 priv->ver |= TDA8275A;
653
654 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
655 priv->i2c_props.adap, &priv->cfg);
656 priv->cfg.switch_addr = priv->i2c_props.addr;
657 }
658 if (fe->ops.tuner_ops.init)
659 fe->ops.tuner_ops.init(fe);
660
661 if (fe->ops.tuner_ops.sleep)
662 fe->ops.tuner_ops.sleep(fe);
663
664 if (fe->ops.analog_ops.i2c_gate_ctrl)
665 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);
666
667 return 0;
668 }
669
670 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
671 {
672 #define TDA8290_ID 0x89
673 u8 reg = 0x1f, id;
674 struct i2c_msg msg_read[] = {
675 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = &reg },
676 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },
677 };
678
679 /* detect tda8290 */
680 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
681 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",
682 __func__, reg);
683 return -ENODEV;
684 }
685
686 if (id == TDA8290_ID) {
687 if (debug)
688 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
689 __func__, i2c_adapter_id(i2c_props->adap),
690 i2c_props->addr);
691 return 0;
692 }
693 return -ENODEV;
694 }
695
696 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
697 {
698 #define TDA8295_ID 0x8a
699 #define TDA8295C2_ID 0x8b
700 u8 reg = 0x2f, id;
701 struct i2c_msg msg_read[] = {
702 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = &reg },
703 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },
704 };
705
706 /* detect tda8295 */
707 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {
708 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",
709 __func__, reg);
710 return -ENODEV;
711 }
712
713 if ((id & 0xfe) == TDA8295_ID) {
714 if (debug)
715 printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n",
716 __func__, (id == TDA8295_ID) ?
717 "tda8295c1" : "tda8295c2",
718 i2c_adapter_id(i2c_props->adap),
719 i2c_props->addr);
720 return 0;
721 }
722
723 return -ENODEV;
724 }
725
726 static const struct analog_demod_ops tda8290_ops = {
727 .set_params = tda8290_set_params,
728 .has_signal = tda8290_has_signal,
729 .standby = tda8290_standby,
730 .release = tda829x_release,
731 .i2c_gate_ctrl = tda8290_i2c_bridge,
732 };
733
734 static const struct analog_demod_ops tda8295_ops = {
735 .set_params = tda8295_set_params,
736 .has_signal = tda8295_has_signal,
737 .standby = tda8295_standby,
738 .release = tda829x_release,
739 .i2c_gate_ctrl = tda8295_i2c_bridge,
740 };
741
742 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
743 struct i2c_adapter *i2c_adap, u8 i2c_addr,
744 struct tda829x_config *cfg)
745 {
746 struct tda8290_priv *priv = NULL;
747 char *name;
748
749 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
750 if (priv == NULL)
751 return NULL;
752 fe->analog_demod_priv = priv;
753
754 priv->i2c_props.addr = i2c_addr;
755 priv->i2c_props.adap = i2c_adap;
756 priv->i2c_props.name = "tda829x";
757 if (cfg) {
758 priv->cfg.config = cfg->lna_cfg;
759 priv->tda18271_std_map = cfg->tda18271_std_map;
760 }
761
762 if (tda8290_probe(&priv->i2c_props) == 0) {
763 priv->ver = TDA8290;
764 memcpy(&fe->ops.analog_ops, &tda8290_ops,
765 sizeof(struct analog_demod_ops));
766 }
767
768 if (tda8295_probe(&priv->i2c_props) == 0) {
769 priv->ver = TDA8295;
770 memcpy(&fe->ops.analog_ops, &tda8295_ops,
771 sizeof(struct analog_demod_ops));
772 }
773
774 if (cfg && cfg->no_i2c_gate)
775 fe->ops.analog_ops.i2c_gate_ctrl = NULL;
776
777 if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) {
778 tda8295_power(fe, 1);
779 if (tda829x_find_tuner(fe) < 0)
780 goto fail;
781 }
782
783 switch (priv->ver) {
784 case TDA8290:
785 name = "tda8290";
786 break;
787 case TDA8295:
788 name = "tda8295";
789 break;
790 case TDA8290 | TDA8275:
791 name = "tda8290+75";
792 break;
793 case TDA8295 | TDA8275:
794 name = "tda8295+75";
795 break;
796 case TDA8290 | TDA8275A:
797 name = "tda8290+75a";
798 break;
799 case TDA8295 | TDA8275A:
800 name = "tda8295+75a";
801 break;
802 case TDA8290 | TDA18271:
803 name = "tda8290+18271";
804 break;
805 case TDA8295 | TDA18271:
806 name = "tda8295+18271";
807 break;
808 default:
809 goto fail;
810 }
811 tuner_info("type set to %s\n", name);
812
813 fe->ops.analog_ops.info.name = name;
814
815 if (priv->ver & TDA8290) {
816 if (priv->ver & (TDA8275 | TDA8275A))
817 tda8290_init_tuner(fe);
818 tda8290_init_if(fe);
819 } else if (priv->ver & TDA8295)
820 tda8295_init_if(fe);
821
822 return fe;
823
824 fail:
825 memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops));
826
827 tda829x_release(fe);
828 return NULL;
829 }
830 EXPORT_SYMBOL_GPL(tda829x_attach);
831
832 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
833 {
834 struct tuner_i2c_props i2c_props = {
835 .adap = i2c_adap,
836 .addr = i2c_addr,
837 };
838
839 static unsigned char soft_reset[] = { 0x00, 0x00 };
840 static unsigned char easy_mode_b[] = { 0x01, 0x02 };
841 static unsigned char easy_mode_g[] = { 0x01, 0x04 };
842 static unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
843 static unsigned char addr_dto_lsb = 0x07;
844 unsigned char data;
845 #define PROBE_BUFFER_SIZE 8
846 unsigned char buf[PROBE_BUFFER_SIZE];
847 int i;
848
849 /* rule out tda9887, which would return the same byte repeatedly */
850 tuner_i2c_xfer_send_recv(&i2c_props,
851 soft_reset, 1, buf, PROBE_BUFFER_SIZE);
852 for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
853 if (buf[i] != buf[0])
854 break;
855 }
856
857 /* all bytes are equal, not a tda829x - probably a tda9887 */
858 if (i == PROBE_BUFFER_SIZE)
859 return -ENODEV;
860
861 if ((tda8290_probe(&i2c_props) == 0) ||
862 (tda8295_probe(&i2c_props) == 0))
863 return 0;
864
865 /* fall back to old probing method */
866 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
867 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
868 tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1);
869 if (data == 0) {
870 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
871 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
872 tuner_i2c_xfer_send_recv(&i2c_props,
873 &addr_dto_lsb, 1, &data, 1);
874 if (data == 0x7b) {
875 return 0;
876 }
877 }
878 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
879 return -ENODEV;
880 }
881 EXPORT_SYMBOL_GPL(tda829x_probe);
882
883 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
884 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
885 MODULE_LICENSE("GPL");
Linux with added FPC-III support