3 i2c tv tuner chip device driver
4 controls the philips tda8290+75 tuner chip combo.
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.
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.
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.
20 This "tda8290" module was split apart from the original "tuner" module.
23 #include <linux/i2c.h>
24 #include <linux/delay.h>
25 #include <linux/videodev2.h>
26 #include "tuner-i2c.h"
32 module_param(debug, int, 0644);
33 MODULE_PARM_DESC(debug, "enable verbose debug messages");
35 static int deemphasis_50;
36 module_param(deemphasis_50, int, 0644);
37 MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis");
39 /* ---------------------------------------------------------------------- */
42 struct tuner_i2c_props i2c_props;
44 unsigned char tda8290_easy_mode;
46 unsigned char tda827x_addr;
55 struct tda827x_config cfg;
58 /*---------------------------------------------------------------------*/
60 static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
62 struct tda8290_priv *priv = fe->analog_demod_priv;
64 unsigned char enable[2] = { 0x21, 0xC0 };
65 unsigned char disable[2] = { 0x21, 0x00 };
70 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
71 /* let the bridge stabilize */
75 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
81 static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
83 struct tda8290_priv *priv = fe->analog_demod_priv;
85 unsigned char enable[2] = { 0x45, 0xc1 };
86 unsigned char disable[2] = { 0x46, 0x00 };
87 unsigned char buf[3] = { 0x45, 0x01, 0x00 };
92 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
93 /* let the bridge stabilize */
97 tuner_i2c_xfer_send(&priv->i2c_props, msg, 1);
98 tuner_i2c_xfer_recv(&priv->i2c_props, &msg[1], 1);
102 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);
106 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
112 /*---------------------------------------------------------------------*/
114 static void set_audio(struct dvb_frontend *fe,
115 struct analog_parameters *params)
117 struct tda8290_priv *priv = fe->analog_demod_priv;
120 if (params->std & V4L2_STD_MN) {
121 priv->tda8290_easy_mode = 0x01;
123 } else if (params->std & V4L2_STD_B) {
124 priv->tda8290_easy_mode = 0x02;
126 } else if (params->std & V4L2_STD_GH) {
127 priv->tda8290_easy_mode = 0x04;
129 } else if (params->std & V4L2_STD_PAL_I) {
130 priv->tda8290_easy_mode = 0x08;
132 } else if (params->std & V4L2_STD_DK) {
133 priv->tda8290_easy_mode = 0x10;
135 } else if (params->std & V4L2_STD_SECAM_L) {
136 priv->tda8290_easy_mode = 0x20;
138 } else if (params->std & V4L2_STD_SECAM_LC) {
139 priv->tda8290_easy_mode = 0x40;
142 priv->tda8290_easy_mode = 0x10;
146 if (params->mode == V4L2_TUNER_RADIO) {
147 priv->tda8290_easy_mode = 0x01; /* Start with MN values */
148 tuner_dbg("setting to radio FM\n");
150 tuner_dbg("setting tda829x to system %s\n", mode);
155 unsigned char seq[2];
157 { { 0x01, 0x81} }, /* Put device into expert mode */
158 { { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */
159 { { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */
160 { { 0x05, 0x04} }, /* ADC headroom */
161 { { 0x06, 0x10} }, /* group delay flat */
163 { { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */
170 { { 0x0d, 0x00} }, /* PLL off, no video carrier detect */
171 { { 0x14, 0x00} }, /* disable auto mute if no video */
174 static void tda8290_set_params(struct dvb_frontend *fe,
175 struct analog_parameters *params)
177 struct tda8290_priv *priv = fe->analog_demod_priv;
179 unsigned char soft_reset[] = { 0x00, 0x00 };
180 unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode };
181 unsigned char expert_mode[] = { 0x01, 0x80 };
182 unsigned char agc_out_on[] = { 0x02, 0x00 };
183 unsigned char gainset_off[] = { 0x28, 0x14 };
184 unsigned char if_agc_spd[] = { 0x0f, 0x88 };
185 unsigned char adc_head_6[] = { 0x05, 0x04 };
186 unsigned char adc_head_9[] = { 0x05, 0x02 };
187 unsigned char adc_head_12[] = { 0x05, 0x01 };
188 unsigned char pll_bw_nom[] = { 0x0d, 0x47 };
189 unsigned char pll_bw_low[] = { 0x0d, 0x27 };
190 unsigned char gainset_2[] = { 0x28, 0x64 };
191 unsigned char agc_rst_on[] = { 0x0e, 0x0b };
192 unsigned char agc_rst_off[] = { 0x0e, 0x09 };
193 unsigned char if_agc_set[] = { 0x0f, 0x81 };
194 unsigned char addr_adc_sat = 0x1a;
195 unsigned char addr_agc_stat = 0x1d;
196 unsigned char addr_pll_stat = 0x1b;
197 unsigned char adc_sat, agc_stat,
201 set_audio(fe, params);
203 if (priv->cfg.config)
204 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);
205 tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);
206 tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);
207 tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);
210 if (params->mode == V4L2_TUNER_RADIO) {
211 unsigned char deemphasis[] = { 0x13, 1 };
213 /* FIXME: allow using a different deemphasis */
218 for (i = 0; i < ARRAY_SIZE(fm_mode); i++)
219 tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);
221 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);
223 expert_mode[1] = priv->tda8290_easy_mode + 0x80;
224 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);
225 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);
226 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);
227 if (priv->tda8290_easy_mode & 0x60)
228 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);
230 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);
231 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
234 tda8290_i2c_bridge(fe, 1);
236 if (fe->ops.tuner_ops.set_analog_params)
237 fe->ops.tuner_ops.set_analog_params(fe, params);
239 for (i = 0; i < 3; i++) {
240 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
241 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
242 if (pll_stat & 0x80) {
243 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
244 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
245 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
246 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
247 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);
250 tuner_dbg("tda8290 not locked, no signal?\n");
254 /* adjust headroom resp. gain */
255 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {
256 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",
257 agc_stat, adc_sat, pll_stat & 0x80);
258 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);
260 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
261 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
262 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
263 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
264 if ((agc_stat > 115) || !(pll_stat & 0x80)) {
265 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",
266 agc_stat, pll_stat & 0x80);
270 tuner_i2c_xfer_send(&priv->i2c_props, &addr_agc_stat, 1);
271 tuner_i2c_xfer_recv(&priv->i2c_props, &agc_stat, 1);
272 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
273 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
274 if((agc_stat > 115) || !(pll_stat & 0x80)) {
275 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);
276 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);
277 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);
283 /* l/ l' deadlock? */
284 if(priv->tda8290_easy_mode & 0x60) {
285 tuner_i2c_xfer_send(&priv->i2c_props, &addr_adc_sat, 1);
286 tuner_i2c_xfer_recv(&priv->i2c_props, &adc_sat, 1);
287 tuner_i2c_xfer_send(&priv->i2c_props, &addr_pll_stat, 1);
288 tuner_i2c_xfer_recv(&priv->i2c_props, &pll_stat, 1);
289 if ((adc_sat > 20) || !(pll_stat & 0x80)) {
290 tuner_dbg("trying to resolve SECAM L deadlock\n");
291 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);
293 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);
297 tda8290_i2c_bridge(fe, 0);
298 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);
301 /*---------------------------------------------------------------------*/
303 static void tda8295_power(struct dvb_frontend *fe, int enable)
305 struct tda8290_priv *priv = fe->analog_demod_priv;
306 unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */
308 tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
309 tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
316 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
319 static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)
321 struct tda8290_priv *priv = fe->analog_demod_priv;
322 unsigned char buf[] = { 0x01, 0x00 };
324 tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
325 tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
328 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */
330 buf[1] = 0x00; /* reset active bit */
332 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
335 static void tda8295_set_video_std(struct dvb_frontend *fe)
337 struct tda8290_priv *priv = fe->analog_demod_priv;
338 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };
340 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
342 tda8295_set_easy_mode(fe, 1);
344 tda8295_set_easy_mode(fe, 0);
347 /*---------------------------------------------------------------------*/
349 static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)
351 struct tda8290_priv *priv = fe->analog_demod_priv;
352 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */
354 tuner_i2c_xfer_send(&priv->i2c_props, &buf[0], 1);
355 tuner_i2c_xfer_recv(&priv->i2c_props, &buf[1], 1);
362 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);
365 static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)
367 struct tda8290_priv *priv = fe->analog_demod_priv;
368 unsigned char set_gpio_cf[] = { 0x44, 0x00 };
369 unsigned char set_gpio_val[] = { 0x46, 0x00 };
371 tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_cf[0], 1);
372 tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_cf[1], 1);
373 tuner_i2c_xfer_send(&priv->i2c_props, &set_gpio_val[0], 1);
374 tuner_i2c_xfer_recv(&priv->i2c_props, &set_gpio_val[1], 1);
376 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */
379 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */
380 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */
382 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);
383 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);
386 static int tda8295_has_signal(struct dvb_frontend *fe)
388 struct tda8290_priv *priv = fe->analog_demod_priv;
390 unsigned char hvpll_stat = 0x26;
393 tuner_i2c_xfer_send(&priv->i2c_props, &hvpll_stat, 1);
394 tuner_i2c_xfer_recv(&priv->i2c_props, &ret, 1);
395 return (ret & 0x01) ? 65535 : 0;
398 /*---------------------------------------------------------------------*/
400 static void tda8295_set_params(struct dvb_frontend *fe,
401 struct analog_parameters *params)
403 struct tda8290_priv *priv = fe->analog_demod_priv;
405 unsigned char blanking_mode[] = { 0x1d, 0x00 };
407 set_audio(fe, params);
409 tuner_dbg("%s: freq = %d\n", __func__, params->frequency);
411 tda8295_power(fe, 1);
412 tda8295_agc1_out(fe, 1);
414 tuner_i2c_xfer_send(&priv->i2c_props, &blanking_mode[0], 1);
415 tuner_i2c_xfer_recv(&priv->i2c_props, &blanking_mode[1], 1);
417 tda8295_set_video_std(fe);
419 blanking_mode[1] = 0x03;
420 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);
423 tda8295_i2c_bridge(fe, 1);
425 if (fe->ops.tuner_ops.set_analog_params)
426 fe->ops.tuner_ops.set_analog_params(fe, params);
431 if (tda8295_has_signal(fe))
432 tuner_dbg("tda8295 is locked\n");
434 tuner_dbg("tda8295 not locked, no signal?\n");
436 tda8295_i2c_bridge(fe, 0);
439 /*---------------------------------------------------------------------*/
441 static int tda8290_has_signal(struct dvb_frontend *fe)
443 struct tda8290_priv *priv = fe->analog_demod_priv;
445 unsigned char i2c_get_afc[1] = { 0x1B };
446 unsigned char afc = 0;
448 tuner_i2c_xfer_send(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
449 tuner_i2c_xfer_recv(&priv->i2c_props, &afc, 1);
450 return (afc & 0x80)? 65535:0;
453 /*---------------------------------------------------------------------*/
455 static void tda8290_standby(struct dvb_frontend *fe)
457 struct tda8290_priv *priv = fe->analog_demod_priv;
459 unsigned char cb1[] = { 0x30, 0xD0 };
460 unsigned char tda8290_standby[] = { 0x00, 0x02 };
461 unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
462 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
464 tda8290_i2c_bridge(fe, 1);
465 if (priv->ver & TDA8275A)
467 i2c_transfer(priv->i2c_props.adap, &msg, 1);
468 tda8290_i2c_bridge(fe, 0);
469 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);
470 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);
473 static void tda8295_standby(struct dvb_frontend *fe)
475 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */
477 tda8295_power(fe, 0);
480 static void tda8290_init_if(struct dvb_frontend *fe)
482 struct tda8290_priv *priv = fe->analog_demod_priv;
484 unsigned char set_VS[] = { 0x30, 0x6F };
485 unsigned char set_GP00_CF[] = { 0x20, 0x01 };
486 unsigned char set_GP01_CF[] = { 0x20, 0x0B };
488 if ((priv->cfg.config == 1) || (priv->cfg.config == 2))
489 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);
491 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);
492 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);
495 static void tda8295_init_if(struct dvb_frontend *fe)
497 struct tda8290_priv *priv = fe->analog_demod_priv;
499 static unsigned char set_adc_ctl[] = { 0x33, 0x14 };
500 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 };
501 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 };
502 static unsigned char set_pll_reg0[] = { 0x38, 0x23 };
503 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 };
504 static unsigned char set_pll_reg10[] = { 0x42, 0x61 };
505 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b };
507 tda8295_power(fe, 1);
509 tda8295_set_easy_mode(fe, 0);
510 tda8295_set_video_std(fe);
512 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);
513 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);
514 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);
515 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);
516 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);
517 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);
518 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);
520 tda8295_agc1_out(fe, 0);
521 tda8295_agc2_out(fe, 0);
524 static void tda8290_init_tuner(struct dvb_frontend *fe)
526 struct tda8290_priv *priv = fe->analog_demod_priv;
527 unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
528 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
529 unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
530 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
531 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
532 .buf=tda8275_init, .len = 14};
533 if (priv->ver & TDA8275A)
534 msg.buf = tda8275a_init;
536 tda8290_i2c_bridge(fe, 1);
537 i2c_transfer(priv->i2c_props.adap, &msg, 1);
538 tda8290_i2c_bridge(fe, 0);
541 /*---------------------------------------------------------------------*/
543 static void tda829x_release(struct dvb_frontend *fe)
545 struct tda8290_priv *priv = fe->analog_demod_priv;
547 /* only try to release the tuner if we've
548 * attached it from within this module */
549 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
550 if (fe->ops.tuner_ops.release)
551 fe->ops.tuner_ops.release(fe);
553 kfree(fe->analog_demod_priv);
554 fe->analog_demod_priv = NULL;
557 static struct tda18271_config tda829x_tda18271_config = {
558 .gate = TDA18271_GATE_ANALOG,
561 static int tda829x_find_tuner(struct dvb_frontend *fe)
563 struct tda8290_priv *priv = fe->analog_demod_priv;
564 struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
565 int i, ret, tuners_found;
568 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };
570 if (!analog_ops->i2c_gate_ctrl) {
571 printk(KERN_ERR "tda8290: no gate control were provided!\n");
576 analog_ops->i2c_gate_ctrl(fe, 1);
578 /* probe for tuner chip */
581 for (i = 0x60; i <= 0x63; i++) {
583 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
586 tuner_addrs = (tuner_addrs << 8) + i;
589 /* if there is more than one tuner, we expect the right one is
590 behind the bridge and we choose the highest address that doesn't
594 analog_ops->i2c_gate_ctrl(fe, 0);
596 if (tuners_found > 1)
597 for (i = 0; i < tuners_found; i++) {
598 msg.addr = tuner_addrs & 0xff;
599 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
601 tuner_addrs = tuner_addrs >> 8;
606 if (tuner_addrs == 0) {
608 tuner_info("could not clearly identify tuner address, "
609 "defaulting to %x\n", tuner_addrs);
611 tuner_addrs = tuner_addrs & 0xff;
612 tuner_info("setting tuner address to %x\n", tuner_addrs);
614 priv->tda827x_addr = tuner_addrs;
615 msg.addr = tuner_addrs;
617 analog_ops->i2c_gate_ctrl(fe, 1);
618 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
621 tuner_warn("tuner access failed!\n");
622 analog_ops->i2c_gate_ctrl(fe, 0);
626 if ((data == 0x83) || (data == 0x84)) {
627 priv->ver |= TDA18271;
628 tda829x_tda18271_config.config = priv->cfg.config;
629 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
630 priv->i2c_props.adap, &tda829x_tda18271_config);
632 if ((data & 0x3c) == 0)
633 priv->ver |= TDA8275;
635 priv->ver |= TDA8275A;
637 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
638 priv->i2c_props.adap, &priv->cfg);
639 priv->cfg.switch_addr = priv->i2c_props.addr;
641 if (fe->ops.tuner_ops.init)
642 fe->ops.tuner_ops.init(fe);
644 if (fe->ops.tuner_ops.sleep)
645 fe->ops.tuner_ops.sleep(fe);
647 analog_ops->i2c_gate_ctrl(fe, 0);
652 static int tda8290_probe(struct tuner_i2c_props *i2c_props)
654 #define TDA8290_ID 0x89
655 unsigned char tda8290_id[] = { 0x1f, 0x00 };
658 tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
659 tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);
661 if (tda8290_id[1] == TDA8290_ID) {
663 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
664 __func__, i2c_adapter_id(i2c_props->adap),
672 static int tda8295_probe(struct tuner_i2c_props *i2c_props)
674 #define TDA8295_ID 0x8a
675 unsigned char tda8295_id[] = { 0x2f, 0x00 };
678 tuner_i2c_xfer_send(i2c_props, &tda8295_id[0], 1);
679 tuner_i2c_xfer_recv(i2c_props, &tda8295_id[1], 1);
681 if (tda8295_id[1] == TDA8295_ID) {
683 printk(KERN_DEBUG "%s: tda8295 detected @ %d-%04x\n",
684 __func__, i2c_adapter_id(i2c_props->adap),
692 static struct analog_demod_ops tda8290_ops = {
693 .set_params = tda8290_set_params,
694 .has_signal = tda8290_has_signal,
695 .standby = tda8290_standby,
696 .release = tda829x_release,
697 .i2c_gate_ctrl = tda8290_i2c_bridge,
700 static struct analog_demod_ops tda8295_ops = {
701 .set_params = tda8295_set_params,
702 .has_signal = tda8295_has_signal,
703 .standby = tda8295_standby,
704 .release = tda829x_release,
705 .i2c_gate_ctrl = tda8295_i2c_bridge,
708 struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
709 struct i2c_adapter *i2c_adap, u8 i2c_addr,
710 struct tda829x_config *cfg)
712 struct tda8290_priv *priv = NULL;
715 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);
718 fe->analog_demod_priv = priv;
720 priv->i2c_props.addr = i2c_addr;
721 priv->i2c_props.adap = i2c_adap;
722 priv->i2c_props.name = "tda829x";
724 priv->cfg.config = cfg->lna_cfg;
726 if (tda8290_probe(&priv->i2c_props) == 0) {
728 memcpy(&fe->ops.analog_ops, &tda8290_ops,
729 sizeof(struct analog_demod_ops));
732 if (tda8295_probe(&priv->i2c_props) == 0) {
734 memcpy(&fe->ops.analog_ops, &tda8295_ops,
735 sizeof(struct analog_demod_ops));
738 if ((!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) &&
739 (tda829x_find_tuner(fe) < 0))
749 case TDA8290 | TDA8275:
752 case TDA8295 | TDA8275:
755 case TDA8290 | TDA8275A:
756 name = "tda8290+75a";
758 case TDA8295 | TDA8275A:
759 name = "tda8295+75a";
761 case TDA8290 | TDA18271:
762 name = "tda8290+18271";
764 case TDA8295 | TDA18271:
765 name = "tda8295+18271";
770 tuner_info("type set to %s\n", name);
772 fe->ops.analog_ops.info.name = name;
774 if (priv->ver & TDA8290) {
775 if (priv->ver & (TDA8275 | TDA8275A))
776 tda8290_init_tuner(fe);
778 } else if (priv->ver & TDA8295)
787 EXPORT_SYMBOL_GPL(tda829x_attach);
789 int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
791 struct tuner_i2c_props i2c_props = {
796 unsigned char soft_reset[] = { 0x00, 0x00 };
797 unsigned char easy_mode_b[] = { 0x01, 0x02 };
798 unsigned char easy_mode_g[] = { 0x01, 0x04 };
799 unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
800 unsigned char addr_dto_lsb = 0x07;
802 #define PROBE_BUFFER_SIZE 8
803 unsigned char buf[PROBE_BUFFER_SIZE];
806 /* rule out tda9887, which would return the same byte repeatedly */
807 tuner_i2c_xfer_send(&i2c_props, soft_reset, 1);
808 tuner_i2c_xfer_recv(&i2c_props, buf, PROBE_BUFFER_SIZE);
809 for (i = 1; i < PROBE_BUFFER_SIZE; i++) {
810 if (buf[i] != buf[0])
814 /* all bytes are equal, not a tda829x - probably a tda9887 */
815 if (i == PROBE_BUFFER_SIZE)
818 if ((tda8290_probe(&i2c_props) == 0) ||
819 (tda8295_probe(&i2c_props) == 0))
822 /* fall back to old probing method */
823 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);
824 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
825 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
826 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
828 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);
829 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);
830 tuner_i2c_xfer_send(&i2c_props, &addr_dto_lsb, 1);
831 tuner_i2c_xfer_recv(&i2c_props, &data, 1);
836 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);
839 EXPORT_SYMBOL_GPL(tda829x_probe);
841 MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");
842 MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");
843 MODULE_LICENSE("GPL");
846 * Overrides for Emacs so that we follow Linus's tabbing style.
847 * ---------------------------------------------------------------------------