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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 4 i2c tv tuner chip device driver5 controls the philips tda8290+75 tuner chip combo.6 7 8 This "tda8290" module was split apart from the original "tuner" module.9*/10 11#include <linux/i2c.h>12#include <linux/slab.h>13#include <linux/delay.h>14#include <linux/videodev2.h>15#include "tuner-i2c.h"16#include "tda8290.h"17#include "tda827x.h"18#include "tda18271.h"19 20static int debug;21module_param(debug, int, 0644);22MODULE_PARM_DESC(debug, "enable verbose debug messages");23 24static int deemphasis_50;25module_param(deemphasis_50, int, 0644);26MODULE_PARM_DESC(deemphasis_50, "0 - 75us deemphasis; 1 - 50us deemphasis");27 28/* ---------------------------------------------------------------------- */29 30struct tda8290_priv {31 struct tuner_i2c_props i2c_props;32 33 unsigned char tda8290_easy_mode;34 35 unsigned char tda827x_addr;36 37 unsigned char ver;38#define TDA8290 139#define TDA8295 240#define TDA8275 441#define TDA8275A 842#define TDA18271 1643 44 struct tda827x_config cfg;45 struct tda18271_std_map *tda18271_std_map;46};47 48/*---------------------------------------------------------------------*/49 50static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)51{52 struct tda8290_priv *priv = fe->analog_demod_priv;53 54 static unsigned char enable[2] = { 0x21, 0xC0 };55 static unsigned char disable[2] = { 0x21, 0x00 };56 unsigned char *msg;57 58 if (close) {59 msg = enable;60 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);61 /* let the bridge stabilize */62 msleep(20);63 } else {64 msg = disable;65 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);66 }67 68 return 0;69}70 71static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)72{73 struct tda8290_priv *priv = fe->analog_demod_priv;74 75 static unsigned char enable[2] = { 0x45, 0xc1 };76 static unsigned char disable[2] = { 0x46, 0x00 };77 static unsigned char buf[3] = { 0x45, 0x01, 0x00 };78 unsigned char *msg;79 80 if (close) {81 msg = enable;82 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);83 /* let the bridge stabilize */84 msleep(20);85 } else {86 msg = disable;87 tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1);88 89 buf[2] = msg[1];90 buf[2] &= ~0x04;91 tuner_i2c_xfer_send(&priv->i2c_props, buf, 3);92 msleep(5);93 94 msg[1] |= 0x04;95 tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);96 }97 98 return 0;99}100 101/*---------------------------------------------------------------------*/102 103static void set_audio(struct dvb_frontend *fe,104 struct analog_parameters *params)105{106 struct tda8290_priv *priv = fe->analog_demod_priv;107 char* mode;108 109 if (params->std & V4L2_STD_MN) {110 priv->tda8290_easy_mode = 0x01;111 mode = "MN";112 } else if (params->std & V4L2_STD_B) {113 priv->tda8290_easy_mode = 0x02;114 mode = "B";115 } else if (params->std & V4L2_STD_GH) {116 priv->tda8290_easy_mode = 0x04;117 mode = "GH";118 } else if (params->std & V4L2_STD_PAL_I) {119 priv->tda8290_easy_mode = 0x08;120 mode = "I";121 } else if (params->std & V4L2_STD_DK) {122 priv->tda8290_easy_mode = 0x10;123 mode = "DK";124 } else if (params->std & V4L2_STD_SECAM_L) {125 priv->tda8290_easy_mode = 0x20;126 mode = "L";127 } else if (params->std & V4L2_STD_SECAM_LC) {128 priv->tda8290_easy_mode = 0x40;129 mode = "LC";130 } else {131 priv->tda8290_easy_mode = 0x10;132 mode = "xx";133 }134 135 if (params->mode == V4L2_TUNER_RADIO) {136 /* Set TDA8295 to FM radio; Start TDA8290 with MN values */137 priv->tda8290_easy_mode = (priv->ver & TDA8295) ? 0x80 : 0x01;138 tuner_dbg("setting to radio FM\n");139 } else {140 tuner_dbg("setting tda829x to system %s\n", mode);141 }142}143 144static struct {145 unsigned char seq[2];146} fm_mode[] = {147 { { 0x01, 0x81} }, /* Put device into expert mode */148 { { 0x03, 0x48} }, /* Disable NOTCH and VIDEO filters */149 { { 0x04, 0x04} }, /* Disable color carrier filter (SSIF) */150 { { 0x05, 0x04} }, /* ADC headroom */151 { { 0x06, 0x10} }, /* group delay flat */152 153 { { 0x07, 0x00} }, /* use the same radio DTO values as a tda8295 */154 { { 0x08, 0x00} },155 { { 0x09, 0x80} },156 { { 0x0a, 0xda} },157 { { 0x0b, 0x4b} },158 { { 0x0c, 0x68} },159 160 { { 0x0d, 0x00} }, /* PLL off, no video carrier detect */161 { { 0x14, 0x00} }, /* disable auto mute if no video */162};163 164static void tda8290_set_params(struct dvb_frontend *fe,165 struct analog_parameters *params)166{167 struct tda8290_priv *priv = fe->analog_demod_priv;168 169 static unsigned char soft_reset[] = { 0x00, 0x00 };170 unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode };171 static unsigned char expert_mode[] = { 0x01, 0x80 };172 static unsigned char agc_out_on[] = { 0x02, 0x00 };173 static unsigned char gainset_off[] = { 0x28, 0x14 };174 static unsigned char if_agc_spd[] = { 0x0f, 0x88 };175 static unsigned char adc_head_6[] = { 0x05, 0x04 };176 static unsigned char adc_head_9[] = { 0x05, 0x02 };177 static unsigned char adc_head_12[] = { 0x05, 0x01 };178 static unsigned char pll_bw_nom[] = { 0x0d, 0x47 };179 static unsigned char pll_bw_low[] = { 0x0d, 0x27 };180 static unsigned char gainset_2[] = { 0x28, 0x64 };181 static unsigned char agc_rst_on[] = { 0x0e, 0x0b };182 static unsigned char agc_rst_off[] = { 0x0e, 0x09 };183 static unsigned char if_agc_set[] = { 0x0f, 0x81 };184 static unsigned char addr_adc_sat = 0x1a;185 static unsigned char addr_agc_stat = 0x1d;186 static unsigned char addr_pll_stat = 0x1b;187 static unsigned char adc_sat = 0, agc_stat = 0,188 pll_stat;189 int i;190 191 set_audio(fe, params);192 193 if (priv->cfg.config)194 tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config);195 tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2);196 tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2);197 tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2);198 msleep(1);199 200 if (params->mode == V4L2_TUNER_RADIO) {201 unsigned char deemphasis[] = { 0x13, 1 };202 203 /* FIXME: allow using a different deemphasis */204 205 if (deemphasis_50)206 deemphasis[1] = 2;207 208 for (i = 0; i < ARRAY_SIZE(fm_mode); i++)209 tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2);210 211 tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2);212 } else {213 expert_mode[1] = priv->tda8290_easy_mode + 0x80;214 tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2);215 tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2);216 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2);217 if (priv->tda8290_easy_mode & 0x60)218 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2);219 else220 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2);221 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);222 }223 224 225 if (fe->ops.analog_ops.i2c_gate_ctrl)226 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);227 228 if (fe->ops.tuner_ops.set_analog_params)229 fe->ops.tuner_ops.set_analog_params(fe, params);230 231 for (i = 0; i < 3; i++) {232 tuner_i2c_xfer_send_recv(&priv->i2c_props,233 &addr_pll_stat, 1, &pll_stat, 1);234 if (pll_stat & 0x80) {235 tuner_i2c_xfer_send_recv(&priv->i2c_props,236 &addr_adc_sat, 1,237 &adc_sat, 1);238 tuner_i2c_xfer_send_recv(&priv->i2c_props,239 &addr_agc_stat, 1,240 &agc_stat, 1);241 tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat);242 break;243 } else {244 tuner_dbg("tda8290 not locked, no signal?\n");245 msleep(100);246 }247 }248 /* adjust headroom resp. gain */249 if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) {250 tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n",251 agc_stat, adc_sat, pll_stat & 0x80);252 tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2);253 msleep(100);254 tuner_i2c_xfer_send_recv(&priv->i2c_props,255 &addr_agc_stat, 1, &agc_stat, 1);256 tuner_i2c_xfer_send_recv(&priv->i2c_props,257 &addr_pll_stat, 1, &pll_stat, 1);258 if ((agc_stat > 115) || !(pll_stat & 0x80)) {259 tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n",260 agc_stat, pll_stat & 0x80);261 if (priv->cfg.agcf)262 priv->cfg.agcf(fe);263 msleep(100);264 tuner_i2c_xfer_send_recv(&priv->i2c_props,265 &addr_agc_stat, 1,266 &agc_stat, 1);267 tuner_i2c_xfer_send_recv(&priv->i2c_props,268 &addr_pll_stat, 1,269 &pll_stat, 1);270 if((agc_stat > 115) || !(pll_stat & 0x80)) {271 tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat);272 tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2);273 tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2);274 msleep(100);275 }276 }277 }278 279 /* l/ l' deadlock? */280 if(priv->tda8290_easy_mode & 0x60) {281 tuner_i2c_xfer_send_recv(&priv->i2c_props,282 &addr_adc_sat, 1,283 &adc_sat, 1);284 tuner_i2c_xfer_send_recv(&priv->i2c_props,285 &addr_pll_stat, 1,286 &pll_stat, 1);287 if ((adc_sat > 20) || !(pll_stat & 0x80)) {288 tuner_dbg("trying to resolve SECAM L deadlock\n");289 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2);290 msleep(40);291 tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2);292 }293 }294 295 if (fe->ops.analog_ops.i2c_gate_ctrl)296 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);297 tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2);298}299 300/*---------------------------------------------------------------------*/301 302static 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_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);308 309 if (enable)310 buf[1] = 0x01;311 else312 buf[1] = 0x03;313 314 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);315}316 317static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable)318{319 struct tda8290_priv *priv = fe->analog_demod_priv;320 unsigned char buf[] = { 0x01, 0x00 };321 322 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);323 324 if (enable)325 buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */326 else327 buf[1] = 0x00; /* reset active bit */328 329 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);330}331 332static void tda8295_set_video_std(struct dvb_frontend *fe)333{334 struct tda8290_priv *priv = fe->analog_demod_priv;335 unsigned char buf[] = { 0x00, priv->tda8290_easy_mode };336 337 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);338 339 tda8295_set_easy_mode(fe, 1);340 msleep(20);341 tda8295_set_easy_mode(fe, 0);342}343 344/*---------------------------------------------------------------------*/345 346static void tda8295_agc1_out(struct dvb_frontend *fe, int enable)347{348 struct tda8290_priv *priv = fe->analog_demod_priv;349 unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */350 351 tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1);352 353 if (enable)354 buf[1] &= ~0x40;355 else356 buf[1] |= 0x40;357 358 tuner_i2c_xfer_send(&priv->i2c_props, buf, 2);359}360 361static void tda8295_agc2_out(struct dvb_frontend *fe, int enable)362{363 struct tda8290_priv *priv = fe->analog_demod_priv;364 unsigned char set_gpio_cf[] = { 0x44, 0x00 };365 unsigned char set_gpio_val[] = { 0x46, 0x00 };366 367 tuner_i2c_xfer_send_recv(&priv->i2c_props,368 &set_gpio_cf[0], 1, &set_gpio_cf[1], 1);369 tuner_i2c_xfer_send_recv(&priv->i2c_props,370 &set_gpio_val[0], 1, &set_gpio_val[1], 1);371 372 set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */373 374 if (enable) {375 set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */376 set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */377 }378 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2);379 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2);380}381 382static int tda8295_has_signal(struct dvb_frontend *fe, u16 *signal)383{384 struct tda8290_priv *priv = fe->analog_demod_priv;385 386 unsigned char hvpll_stat = 0x26;387 unsigned char ret;388 389 tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1);390 *signal = (ret & 0x01) ? 65535 : 0;391 return 0;392}393 394/*---------------------------------------------------------------------*/395 396static void tda8295_set_params(struct dvb_frontend *fe,397 struct analog_parameters *params)398{399 struct tda8290_priv *priv = fe->analog_demod_priv;400 u16 signal = 0;401 unsigned char blanking_mode[] = { 0x1d, 0x00 };402 403 set_audio(fe, params);404 405 tuner_dbg("%s: freq = %d\n", __func__, params->frequency);406 407 tda8295_power(fe, 1);408 tda8295_agc1_out(fe, 1);409 410 tuner_i2c_xfer_send_recv(&priv->i2c_props,411 &blanking_mode[0], 1, &blanking_mode[1], 1);412 413 tda8295_set_video_std(fe);414 415 blanking_mode[1] = 0x03;416 tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2);417 msleep(20);418 419 if (fe->ops.analog_ops.i2c_gate_ctrl)420 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);421 422 if (fe->ops.tuner_ops.set_analog_params)423 fe->ops.tuner_ops.set_analog_params(fe, params);424 425 if (priv->cfg.agcf)426 priv->cfg.agcf(fe);427 428 tda8295_has_signal(fe, &signal);429 if (signal)430 tuner_dbg("tda8295 is locked\n");431 else432 tuner_dbg("tda8295 not locked, no signal?\n");433 434 if (fe->ops.analog_ops.i2c_gate_ctrl)435 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);436}437 438/*---------------------------------------------------------------------*/439 440static int tda8290_has_signal(struct dvb_frontend *fe, u16 *signal)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_recv(&priv->i2c_props,448 i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1);449 *signal = (afc & 0x80) ? 65535 : 0;450 return 0;451}452 453/*---------------------------------------------------------------------*/454 455static void tda8290_standby(struct dvb_frontend *fe)456{457 struct tda8290_priv *priv = fe->analog_demod_priv;458 459 static unsigned char cb1[] = { 0x30, 0xD0 };460 static unsigned char tda8290_standby[] = { 0x00, 0x02 };461 static unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };462 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};463 464 if (fe->ops.analog_ops.i2c_gate_ctrl)465 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);466 if (priv->ver & TDA8275A)467 cb1[1] = 0x90;468 i2c_transfer(priv->i2c_props.adap, &msg, 1);469 if (fe->ops.analog_ops.i2c_gate_ctrl)470 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);471 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_agc_tri, 2);472 tuner_i2c_xfer_send(&priv->i2c_props, tda8290_standby, 2);473}474 475static void tda8295_standby(struct dvb_frontend *fe)476{477 tda8295_agc1_out(fe, 0); /* Put AGC in tri-state */478 479 tda8295_power(fe, 0);480}481 482static void tda8290_init_if(struct dvb_frontend *fe)483{484 struct tda8290_priv *priv = fe->analog_demod_priv;485 486 static unsigned char set_VS[] = { 0x30, 0x6F };487 static unsigned char set_GP00_CF[] = { 0x20, 0x01 };488 static unsigned char set_GP01_CF[] = { 0x20, 0x0B };489 490 if ((priv->cfg.config == TDA8290_LNA_GP0_HIGH_ON) ||491 (priv->cfg.config == TDA8290_LNA_GP0_HIGH_OFF))492 tuner_i2c_xfer_send(&priv->i2c_props, set_GP00_CF, 2);493 else494 tuner_i2c_xfer_send(&priv->i2c_props, set_GP01_CF, 2);495 tuner_i2c_xfer_send(&priv->i2c_props, set_VS, 2);496}497 498static void tda8295_init_if(struct dvb_frontend *fe)499{500 struct tda8290_priv *priv = fe->analog_demod_priv;501 502 static unsigned char set_adc_ctl[] = { 0x33, 0x14 };503 static unsigned char set_adc_ctl2[] = { 0x34, 0x00 };504 static unsigned char set_pll_reg6[] = { 0x3e, 0x63 };505 static unsigned char set_pll_reg0[] = { 0x38, 0x23 };506 static unsigned char set_pll_reg7[] = { 0x3f, 0x01 };507 static unsigned char set_pll_reg10[] = { 0x42, 0x61 };508 static unsigned char set_gpio_reg0[] = { 0x44, 0x0b };509 510 tda8295_power(fe, 1);511 512 tda8295_set_easy_mode(fe, 0);513 tda8295_set_video_std(fe);514 515 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl, 2);516 tuner_i2c_xfer_send(&priv->i2c_props, set_adc_ctl2, 2);517 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg6, 2);518 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg0, 2);519 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg7, 2);520 tuner_i2c_xfer_send(&priv->i2c_props, set_pll_reg10, 2);521 tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_reg0, 2);522 523 tda8295_agc1_out(fe, 0);524 tda8295_agc2_out(fe, 0);525}526 527static void tda8290_init_tuner(struct dvb_frontend *fe)528{529 struct tda8290_priv *priv = fe->analog_demod_priv;530 static unsigned char tda8275_init[] =531 { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,532 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };533 static unsigned char tda8275a_init[] =534 { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,535 0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };536 struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,537 .buf=tda8275_init, .len = 14};538 if (priv->ver & TDA8275A)539 msg.buf = tda8275a_init;540 541 if (fe->ops.analog_ops.i2c_gate_ctrl)542 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);543 i2c_transfer(priv->i2c_props.adap, &msg, 1);544 if (fe->ops.analog_ops.i2c_gate_ctrl)545 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);546}547 548/*---------------------------------------------------------------------*/549 550static void tda829x_release(struct dvb_frontend *fe)551{552 struct tda8290_priv *priv = fe->analog_demod_priv;553 554 /* only try to release the tuner if we've555 * attached it from within this module */556 if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))557 if (fe->ops.tuner_ops.release)558 fe->ops.tuner_ops.release(fe);559 560 kfree(fe->analog_demod_priv);561 fe->analog_demod_priv = NULL;562}563 564static struct tda18271_config tda829x_tda18271_config = {565 .gate = TDA18271_GATE_ANALOG,566};567 568static int tda829x_find_tuner(struct dvb_frontend *fe)569{570 struct tda8290_priv *priv = fe->analog_demod_priv;571 int i, ret, tuners_found;572 u32 tuner_addrs;573 u8 data;574 struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };575 576 if (fe->ops.analog_ops.i2c_gate_ctrl)577 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);578 579 /* probe for tuner chip */580 tuners_found = 0;581 tuner_addrs = 0;582 for (i = 0x60; i <= 0x63; i++) {583 msg.addr = i;584 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);585 if (ret == 1) {586 tuners_found++;587 tuner_addrs = (tuner_addrs << 8) + i;588 }589 }590 /* if there is more than one tuner, we expect the right one is591 behind the bridge and we choose the highest address that doesn't592 give a response now593 */594 595 if (fe->ops.analog_ops.i2c_gate_ctrl)596 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);597 598 if (tuners_found > 1)599 for (i = 0; i < tuners_found; i++) {600 msg.addr = tuner_addrs & 0xff;601 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);602 if (ret == 1)603 tuner_addrs = tuner_addrs >> 8;604 else605 break;606 }607 608 if (tuner_addrs == 0) {609 tuner_addrs = 0x60;610 tuner_info("could not clearly identify tuner address, defaulting to %x\n",611 tuner_addrs);612 } else {613 tuner_addrs = tuner_addrs & 0xff;614 tuner_info("setting tuner address to %x\n", tuner_addrs);615 }616 priv->tda827x_addr = tuner_addrs;617 msg.addr = tuner_addrs;618 619 if (fe->ops.analog_ops.i2c_gate_ctrl)620 fe->ops.analog_ops.i2c_gate_ctrl(fe, 1);621 ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);622 623 if (ret != 1) {624 tuner_warn("tuner access failed!\n");625 if (fe->ops.analog_ops.i2c_gate_ctrl)626 fe->ops.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 tda829x_tda18271_config.std_map = priv->tda18271_std_map;634 dvb_attach(tda18271_attach, fe, priv->tda827x_addr,635 priv->i2c_props.adap, &tda829x_tda18271_config);636 } else {637 if ((data & 0x3c) == 0)638 priv->ver |= TDA8275;639 else640 priv->ver |= TDA8275A;641 642 dvb_attach(tda827x_attach, fe, priv->tda827x_addr,643 priv->i2c_props.adap, &priv->cfg);644 priv->cfg.switch_addr = priv->i2c_props.addr;645 }646 if (fe->ops.tuner_ops.init)647 fe->ops.tuner_ops.init(fe);648 649 if (fe->ops.tuner_ops.sleep)650 fe->ops.tuner_ops.sleep(fe);651 652 if (fe->ops.analog_ops.i2c_gate_ctrl)653 fe->ops.analog_ops.i2c_gate_ctrl(fe, 0);654 655 return 0;656}657 658static int tda8290_probe(struct tuner_i2c_props *i2c_props)659{660#define TDA8290_ID 0x89661 u8 reg = 0x1f, id;662 struct i2c_msg msg_read[] = {663 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® },664 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },665 };666 667 /* detect tda8290 */668 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {669 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",670 __func__, reg);671 return -ENODEV;672 }673 674 if (id == TDA8290_ID) {675 if (debug)676 printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",677 __func__, i2c_adapter_id(i2c_props->adap),678 i2c_props->addr);679 return 0;680 }681 return -ENODEV;682}683 684static int tda8295_probe(struct tuner_i2c_props *i2c_props)685{686#define TDA8295_ID 0x8a687#define TDA8295C2_ID 0x8b688 u8 reg = 0x2f, id;689 struct i2c_msg msg_read[] = {690 { .addr = i2c_props->addr, .flags = 0, .len = 1, .buf = ® },691 { .addr = i2c_props->addr, .flags = I2C_M_RD, .len = 1, .buf = &id },692 };693 694 /* detect tda8295 */695 if (i2c_transfer(i2c_props->adap, msg_read, 2) != 2) {696 printk(KERN_WARNING "%s: couldn't read register 0x%02x\n",697 __func__, reg);698 return -ENODEV;699 }700 701 if ((id & 0xfe) == TDA8295_ID) {702 if (debug)703 printk(KERN_DEBUG "%s: %s detected @ %d-%04x\n",704 __func__, (id == TDA8295_ID) ?705 "tda8295c1" : "tda8295c2",706 i2c_adapter_id(i2c_props->adap),707 i2c_props->addr);708 return 0;709 }710 711 return -ENODEV;712}713 714static const struct analog_demod_ops tda8290_ops = {715 .set_params = tda8290_set_params,716 .has_signal = tda8290_has_signal,717 .standby = tda8290_standby,718 .release = tda829x_release,719 .i2c_gate_ctrl = tda8290_i2c_bridge,720};721 722static const struct analog_demod_ops tda8295_ops = {723 .set_params = tda8295_set_params,724 .has_signal = tda8295_has_signal,725 .standby = tda8295_standby,726 .release = tda829x_release,727 .i2c_gate_ctrl = tda8295_i2c_bridge,728};729 730struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,731 struct i2c_adapter *i2c_adap, u8 i2c_addr,732 struct tda829x_config *cfg)733{734 struct tda8290_priv *priv = NULL;735 char *name;736 737 priv = kzalloc(sizeof(struct tda8290_priv), GFP_KERNEL);738 if (priv == NULL)739 return NULL;740 fe->analog_demod_priv = priv;741 742 priv->i2c_props.addr = i2c_addr;743 priv->i2c_props.adap = i2c_adap;744 priv->i2c_props.name = "tda829x";745 if (cfg) {746 priv->cfg.config = cfg->lna_cfg;747 priv->tda18271_std_map = cfg->tda18271_std_map;748 }749 750 if (tda8290_probe(&priv->i2c_props) == 0) {751 priv->ver = TDA8290;752 memcpy(&fe->ops.analog_ops, &tda8290_ops,753 sizeof(struct analog_demod_ops));754 }755 756 if (tda8295_probe(&priv->i2c_props) == 0) {757 priv->ver = TDA8295;758 memcpy(&fe->ops.analog_ops, &tda8295_ops,759 sizeof(struct analog_demod_ops));760 }761 762 if (cfg && cfg->no_i2c_gate)763 fe->ops.analog_ops.i2c_gate_ctrl = NULL;764 765 if (!(cfg) || (TDA829X_PROBE_TUNER == cfg->probe_tuner)) {766 tda8295_power(fe, 1);767 if (tda829x_find_tuner(fe) < 0)768 goto fail;769 }770 771 switch (priv->ver) {772 case TDA8290:773 name = "tda8290";774 break;775 case TDA8295:776 name = "tda8295";777 break;778 case TDA8290 | TDA8275:779 name = "tda8290+75";780 break;781 case TDA8295 | TDA8275:782 name = "tda8295+75";783 break;784 case TDA8290 | TDA8275A:785 name = "tda8290+75a";786 break;787 case TDA8295 | TDA8275A:788 name = "tda8295+75a";789 break;790 case TDA8290 | TDA18271:791 name = "tda8290+18271";792 break;793 case TDA8295 | TDA18271:794 name = "tda8295+18271";795 break;796 default:797 goto fail;798 }799 tuner_info("type set to %s\n", name);800 801 fe->ops.analog_ops.info.name = name;802 803 if (priv->ver & TDA8290) {804 if (priv->ver & (TDA8275 | TDA8275A))805 tda8290_init_tuner(fe);806 tda8290_init_if(fe);807 } else if (priv->ver & TDA8295)808 tda8295_init_if(fe);809 810 return fe;811 812fail:813 memset(&fe->ops.analog_ops, 0, sizeof(struct analog_demod_ops));814 815 tda829x_release(fe);816 return NULL;817}818EXPORT_SYMBOL_GPL(tda829x_attach);819 820int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)821{822 struct tuner_i2c_props i2c_props = {823 .adap = i2c_adap,824 .addr = i2c_addr,825 };826 827 static unsigned char soft_reset[] = { 0x00, 0x00 };828 static unsigned char easy_mode_b[] = { 0x01, 0x02 };829 static unsigned char easy_mode_g[] = { 0x01, 0x04 };830 static unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };831 static unsigned char addr_dto_lsb = 0x07;832 unsigned char data;833#define PROBE_BUFFER_SIZE 8834 unsigned char buf[PROBE_BUFFER_SIZE];835 int i;836 837 /* rule out tda9887, which would return the same byte repeatedly */838 tuner_i2c_xfer_send_recv(&i2c_props,839 soft_reset, 1, buf, PROBE_BUFFER_SIZE);840 for (i = 1; i < PROBE_BUFFER_SIZE; i++) {841 if (buf[i] != buf[0])842 break;843 }844 845 /* all bytes are equal, not a tda829x - probably a tda9887 */846 if (i == PROBE_BUFFER_SIZE)847 return -ENODEV;848 849 if ((tda8290_probe(&i2c_props) == 0) ||850 (tda8295_probe(&i2c_props) == 0))851 return 0;852 853 /* fall back to old probing method */854 tuner_i2c_xfer_send(&i2c_props, easy_mode_b, 2);855 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);856 tuner_i2c_xfer_send_recv(&i2c_props, &addr_dto_lsb, 1, &data, 1);857 if (data == 0) {858 tuner_i2c_xfer_send(&i2c_props, easy_mode_g, 2);859 tuner_i2c_xfer_send(&i2c_props, soft_reset, 2);860 tuner_i2c_xfer_send_recv(&i2c_props,861 &addr_dto_lsb, 1, &data, 1);862 if (data == 0x7b) {863 return 0;864 }865 }866 tuner_i2c_xfer_send(&i2c_props, restore_9886, 3);867 return -ENODEV;868}869EXPORT_SYMBOL_GPL(tda829x_probe);870 871MODULE_DESCRIPTION("Philips/NXP TDA8290/TDA8295 analog IF demodulator driver");872MODULE_AUTHOR("Gerd Knorr, Hartmut Hackmann, Michael Krufky");873MODULE_LICENSE("GPL");874