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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner driver4 *5 * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>6 */7 8#include "si2157_priv.h"9 10static const struct dvb_tuner_ops si2157_ops;11 12static int tuner_lock_debug;13module_param(tuner_lock_debug, int, 0644);14MODULE_PARM_DESC(tuner_lock_debug, "if set, signal lock is briefly waited on after setting params");15 16/* execute firmware command */17static int si2157_cmd_execute(struct i2c_client *client, struct si2157_cmd *cmd)18{19 struct si2157_dev *dev = i2c_get_clientdata(client);20 int ret;21 unsigned long timeout;22 23 mutex_lock(&dev->i2c_mutex);24 25 if (cmd->wlen) {26 /* write cmd and args for firmware */27 ret = i2c_master_send(client, cmd->args, cmd->wlen);28 if (ret < 0) {29 goto err_mutex_unlock;30 } else if (ret != cmd->wlen) {31 ret = -EREMOTEIO;32 goto err_mutex_unlock;33 }34 }35 36 if (cmd->rlen) {37 /* wait cmd execution terminate */38 #define TIMEOUT 8039 timeout = jiffies + msecs_to_jiffies(TIMEOUT);40 while (!time_after(jiffies, timeout)) {41 ret = i2c_master_recv(client, cmd->args, cmd->rlen);42 if (ret < 0) {43 goto err_mutex_unlock;44 } else if (ret != cmd->rlen) {45 ret = -EREMOTEIO;46 goto err_mutex_unlock;47 }48 49 /* firmware ready? */50 if ((cmd->args[0] >> 7) & 0x01)51 break;52 }53 54 dev_dbg(&client->dev, "cmd execution took %d ms, status=%x\n",55 jiffies_to_msecs(jiffies) -56 (jiffies_to_msecs(timeout) - TIMEOUT),57 cmd->args[0]);58 59 if (!((cmd->args[0] >> 7) & 0x01)) {60 ret = -ETIMEDOUT;61 goto err_mutex_unlock;62 }63 /* check error status bit */64 if (cmd->args[0] & 0x40) {65 ret = -EAGAIN;66 goto err_mutex_unlock;67 }68 }69 70 mutex_unlock(&dev->i2c_mutex);71 return 0;72 73err_mutex_unlock:74 mutex_unlock(&dev->i2c_mutex);75 dev_dbg(&client->dev, "failed=%d\n", ret);76 return ret;77}78 79static const struct si2157_tuner_info si2157_tuners[] = {80 { SI2141, 0x60, false, SI2141_60_FIRMWARE, SI2141_A10_FIRMWARE },81 { SI2141, 0x61, false, SI2141_61_FIRMWARE, SI2141_A10_FIRMWARE },82 { SI2146, 0x11, false, SI2146_11_FIRMWARE, NULL },83 { SI2147, 0x50, false, SI2147_50_FIRMWARE, NULL },84 { SI2148, 0x32, true, SI2148_32_FIRMWARE, SI2158_A20_FIRMWARE },85 { SI2148, 0x33, true, SI2148_33_FIRMWARE, SI2158_A20_FIRMWARE },86 { SI2157, 0x50, false, SI2157_50_FIRMWARE, SI2157_A30_FIRMWARE },87 { SI2158, 0x50, false, SI2158_50_FIRMWARE, SI2158_A20_FIRMWARE },88 { SI2158, 0x51, false, SI2158_51_FIRMWARE, SI2158_A20_FIRMWARE },89 { SI2177, 0x50, false, SI2177_50_FIRMWARE, SI2157_A30_FIRMWARE },90};91 92static int si2157_load_firmware(struct dvb_frontend *fe,93 const char *fw_name)94{95 struct i2c_client *client = fe->tuner_priv;96 const struct firmware *fw;97 int ret, len, remaining;98 struct si2157_cmd cmd;99 100 /* request the firmware, this will block and timeout */101 ret = firmware_request_nowarn(&fw, fw_name, &client->dev);102 if (ret)103 return ret;104 105 /* firmware should be n chunks of 17 bytes */106 if (fw->size % 17 != 0) {107 dev_err(&client->dev, "firmware file '%s' is invalid\n",108 fw_name);109 ret = -EINVAL;110 goto err_release_firmware;111 }112 113 dev_info(&client->dev, "downloading firmware from file '%s'\n",114 fw_name);115 116 for (remaining = fw->size; remaining > 0; remaining -= 17) {117 len = fw->data[fw->size - remaining];118 if (len > SI2157_ARGLEN) {119 dev_err(&client->dev, "Bad firmware length\n");120 ret = -EINVAL;121 goto err_release_firmware;122 }123 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);124 cmd.wlen = len;125 cmd.rlen = 1;126 ret = si2157_cmd_execute(client, &cmd);127 if (ret) {128 dev_err(&client->dev, "firmware download failed %d\n",129 ret);130 goto err_release_firmware;131 }132 }133 134err_release_firmware:135 release_firmware(fw);136 137 return ret;138}139 140static int si2157_find_and_load_firmware(struct dvb_frontend *fe)141{142 struct i2c_client *client = fe->tuner_priv;143 struct si2157_dev *dev = i2c_get_clientdata(client);144 const char *fw_alt_name = NULL;145 unsigned char part_id, rom_id;146 const char *fw_name = NULL;147 struct si2157_cmd cmd;148 bool required = true;149 int ret, i;150 151 if (dev->dont_load_firmware) {152 dev_info(&client->dev,153 "device is buggy, skipping firmware download\n");154 return 0;155 }156 157 /* query chip revision */158 memcpy(cmd.args, "\x02", 1);159 cmd.wlen = 1;160 cmd.rlen = 13;161 ret = si2157_cmd_execute(client, &cmd);162 if (ret)163 return ret;164 165 part_id = cmd.args[2];166 rom_id = cmd.args[12];167 168 for (i = 0; i < ARRAY_SIZE(si2157_tuners); i++) {169 if (si2157_tuners[i].part_id != part_id)170 continue;171 required = si2157_tuners[i].required;172 fw_alt_name = si2157_tuners[i].fw_alt_name;173 174 /* Both part and rom ID match */175 if (si2157_tuners[i].rom_id == rom_id) {176 fw_name = si2157_tuners[i].fw_name;177 break;178 }179 }180 181 if (required && !fw_name && !fw_alt_name) {182 dev_err(&client->dev,183 "unknown chip version Si21%d-%c%c%c ROM 0x%02x\n",184 part_id, cmd.args[1], cmd.args[3], cmd.args[4], rom_id);185 return -EINVAL;186 }187 188 /* Update the part id based on device's report */189 dev->part_id = part_id;190 191 dev_info(&client->dev,192 "found a 'Silicon Labs Si21%d-%c%c%c ROM 0x%02x'\n",193 part_id, cmd.args[1], cmd.args[3], cmd.args[4], rom_id);194 195 if (fw_name)196 ret = si2157_load_firmware(fe, fw_name);197 else198 ret = -ENOENT;199 200 /* Try alternate name, if any */201 if (ret == -ENOENT && fw_alt_name)202 ret = si2157_load_firmware(fe, fw_alt_name);203 204 if (ret == -ENOENT) {205 if (!required) {206 dev_info(&client->dev, "Using ROM firmware.\n");207 return 0;208 }209 dev_err(&client->dev, "Can't continue without a firmware.\n");210 } else if (ret < 0) {211 dev_err(&client->dev, "error %d when loading firmware\n", ret);212 }213 return ret;214}215 216static int si2157_init(struct dvb_frontend *fe)217{218 struct dtv_frontend_properties *c = &fe->dtv_property_cache;219 struct i2c_client *client = fe->tuner_priv;220 struct si2157_dev *dev = i2c_get_clientdata(client);221 unsigned int xtal_trim;222 struct si2157_cmd cmd;223 int ret;224 225 dev_dbg(&client->dev, "\n");226 227 /* Try to get Xtal trim property, to verify tuner still running */228 memcpy(cmd.args, "\x15\x00\x02\x04", 4);229 cmd.wlen = 4;230 cmd.rlen = 4;231 ret = si2157_cmd_execute(client, &cmd);232 233 xtal_trim = cmd.args[2] | (cmd.args[3] << 8);234 235 if (ret == 0 && xtal_trim < 16)236 goto warm;237 238 dev->if_frequency = 0; /* we no longer know current tuner state */239 240 /* power up */241 if (dev->part_id == SI2146) {242 /* clock_mode = XTAL, clock_freq = 24MHz */243 memcpy(cmd.args, "\xc0\x05\x01\x00\x00\x0b\x00\x00\x01", 9);244 cmd.wlen = 9;245 } else if (dev->part_id == SI2141) {246 /* clock_mode: XTAL, xout enabled */247 memcpy(cmd.args, "\xc0\x00\x0d\x0e\x00\x01\x01\x01\x01\x03", 10);248 cmd.wlen = 10;249 } else {250 memcpy(cmd.args, "\xc0\x00\x0c\x00\x00\x01\x01\x01\x01\x01\x01\x02\x00\x00\x01", 15);251 cmd.wlen = 15;252 }253 cmd.rlen = 1;254 ret = si2157_cmd_execute(client, &cmd);255 if (ret && (dev->part_id != SI2141 || ret != -EAGAIN))256 goto err;257 258 /* Si2141 needs a wake up command */259 if (dev->part_id == SI2141) {260 memcpy(cmd.args, "\xc0\x08\x01\x02\x00\x00\x01", 7);261 cmd.wlen = 7;262 ret = si2157_cmd_execute(client, &cmd);263 if (ret)264 goto err;265 }266 267 /* Try to load the firmware */268 ret = si2157_find_and_load_firmware(fe);269 if (ret < 0)270 goto err;271 272 /* reboot the tuner with new firmware? */273 memcpy(cmd.args, "\x01\x01", 2);274 cmd.wlen = 2;275 cmd.rlen = 1;276 ret = si2157_cmd_execute(client, &cmd);277 if (ret)278 goto err;279 280 /* query firmware version */281 memcpy(cmd.args, "\x11", 1);282 cmd.wlen = 1;283 cmd.rlen = 10;284 ret = si2157_cmd_execute(client, &cmd);285 if (ret)286 goto err;287 288 dev_info(&client->dev, "firmware version: %c.%c.%d\n",289 cmd.args[6], cmd.args[7], cmd.args[8]);290 291 /* enable tuner status flags */292 memcpy(cmd.args, "\x14\x00\x01\x05\x01\x00", 6);293 cmd.wlen = 6;294 cmd.rlen = 1;295 ret = si2157_cmd_execute(client, &cmd);296 if (ret)297 goto err;298 299 memcpy(cmd.args, "\x14\x00\x01\x06\x01\x00", 6);300 cmd.wlen = 6;301 cmd.rlen = 1;302 ret = si2157_cmd_execute(client, &cmd);303 if (ret)304 goto err;305 306 memcpy(cmd.args, "\x14\x00\x01\x07\x01\x00", 6);307 cmd.wlen = 6;308 cmd.rlen = 1;309 ret = si2157_cmd_execute(client, &cmd);310 if (ret)311 goto err;312warm:313 /* init statistics in order signal app which are supported */314 c->strength.len = 1;315 c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;316 /* start statistics polling */317 schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(1000));318 319 dev->active = true;320 return 0;321 322err:323 dev_dbg(&client->dev, "failed=%d\n", ret);324 return ret;325}326 327static int si2157_sleep(struct dvb_frontend *fe)328{329 struct i2c_client *client = fe->tuner_priv;330 struct si2157_dev *dev = i2c_get_clientdata(client);331 int ret;332 struct si2157_cmd cmd;333 334 dev_dbg(&client->dev, "\n");335 336 dev->active = false;337 338 /* stop statistics polling */339 cancel_delayed_work_sync(&dev->stat_work);340 341 /* standby */342 memcpy(cmd.args, "\x16\x00", 2);343 cmd.wlen = 2;344 cmd.rlen = 1;345 ret = si2157_cmd_execute(client, &cmd);346 if (ret)347 goto err;348 349 return 0;350err:351 dev_dbg(&client->dev, "failed=%d\n", ret);352 return ret;353}354 355static int si2157_tune_wait(struct i2c_client *client, u8 is_digital)356{357#define TUN_TIMEOUT 40358#define DIG_TIMEOUT 30359#define ANALOG_TIMEOUT 150360 struct si2157_dev *dev = i2c_get_clientdata(client);361 int ret;362 unsigned long timeout;363 unsigned long start_time;364 u8 wait_status;365 u8 tune_lock_mask;366 367 if (is_digital)368 tune_lock_mask = 0x04;369 else370 tune_lock_mask = 0x02;371 372 mutex_lock(&dev->i2c_mutex);373 374 /* wait tuner command complete */375 start_time = jiffies;376 timeout = start_time + msecs_to_jiffies(TUN_TIMEOUT);377 while (1) {378 ret = i2c_master_recv(client, &wait_status,379 sizeof(wait_status));380 if (ret < 0) {381 goto err_mutex_unlock;382 } else if (ret != sizeof(wait_status)) {383 ret = -EREMOTEIO;384 goto err_mutex_unlock;385 }386 387 if (time_after(jiffies, timeout))388 break;389 390 /* tuner done? */391 if ((wait_status & 0x81) == 0x81)392 break;393 usleep_range(5000, 10000);394 }395 396 dev_dbg(&client->dev, "tuning took %d ms, status=0x%x\n",397 jiffies_to_msecs(jiffies) - jiffies_to_msecs(start_time),398 wait_status);399 400 /* if we tuned ok, wait a bit for tuner lock */401 if (tuner_lock_debug && (wait_status & 0x81) == 0x81) {402 if (is_digital)403 timeout = jiffies + msecs_to_jiffies(DIG_TIMEOUT);404 else405 timeout = jiffies + msecs_to_jiffies(ANALOG_TIMEOUT);406 407 while (!time_after(jiffies, timeout)) {408 ret = i2c_master_recv(client, &wait_status,409 sizeof(wait_status));410 if (ret < 0) {411 goto err_mutex_unlock;412 } else if (ret != sizeof(wait_status)) {413 ret = -EREMOTEIO;414 goto err_mutex_unlock;415 }416 417 /* tuner locked? */418 if (wait_status & tune_lock_mask)419 break;420 usleep_range(5000, 10000);421 }422 423 dev_dbg(&client->dev, "tuning+lock took %d ms, status=0x%x\n",424 jiffies_to_msecs(jiffies) - jiffies_to_msecs(start_time),425 wait_status);426 }427 428 if ((wait_status & 0xc0) != 0x80) {429 ret = -ETIMEDOUT;430 goto err_mutex_unlock;431 }432 433 mutex_unlock(&dev->i2c_mutex);434 return 0;435 436err_mutex_unlock:437 mutex_unlock(&dev->i2c_mutex);438 dev_err(&client->dev, "failed=%d\n", ret);439 return ret;440}441 442static int si2157_set_params(struct dvb_frontend *fe)443{444 struct i2c_client *client = fe->tuner_priv;445 struct si2157_dev *dev = i2c_get_clientdata(client);446 struct dtv_frontend_properties *c = &fe->dtv_property_cache;447 int ret;448 struct si2157_cmd cmd;449 u8 bw, delivery_system;450 u32 bandwidth;451 u32 if_frequency = 5000000;452 453 dev_dbg(&client->dev,454 "delivery_system=%d frequency=%u bandwidth_hz=%u\n",455 c->delivery_system, c->frequency, c->bandwidth_hz);456 457 if (!dev->active) {458 ret = -EAGAIN;459 goto err;460 }461 462 if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 1700000) {463 bandwidth = 1700000;464 bw = 9;465 } else if (c->bandwidth_hz <= 6000000) {466 bandwidth = 6000000;467 bw = 6;468 } else if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 6100000) {469 bandwidth = 6100000;470 bw = 10;471 } else if (c->bandwidth_hz <= 7000000) {472 bandwidth = 7000000;473 bw = 7;474 } else {475 bandwidth = 8000000;476 bw = 8;477 }478 479 switch (c->delivery_system) {480 case SYS_ATSC:481 delivery_system = 0x00;482 if_frequency = 3250000;483 break;484 case SYS_DVBC_ANNEX_B:485 delivery_system = 0x10;486 if_frequency = 4000000;487 break;488 case SYS_DVBT:489 case SYS_DVBT2: /* it seems DVB-T and DVB-T2 both are 0x20 here */490 delivery_system = 0x20;491 break;492 case SYS_DVBC_ANNEX_A:493 case SYS_DVBC_ANNEX_C:494 delivery_system = 0x30;495 break;496 case SYS_ISDBT:497 delivery_system = 0x40;498 break;499 case SYS_DTMB:500 delivery_system = 0x60;501 break;502 default:503 ret = -EINVAL;504 goto err;505 }506 507 memcpy(cmd.args, "\x14\x00\x03\x07\x00\x00", 6);508 cmd.args[4] = delivery_system | bw;509 if (dev->inversion)510 cmd.args[5] = 0x01;511 cmd.wlen = 6;512 cmd.rlen = 4;513 ret = si2157_cmd_execute(client, &cmd);514 if (ret)515 goto err;516 517 /* On SI2146, set DTV AGC source to DLIF_AGC_3DB */518 if (dev->part_id == SI2146)519 memcpy(cmd.args, "\x14\x00\x02\x07\x00\x01", 6);520 else521 memcpy(cmd.args, "\x14\x00\x02\x07\x00\x00", 6);522 cmd.args[4] = dev->if_port;523 cmd.wlen = 6;524 cmd.rlen = 4;525 ret = si2157_cmd_execute(client, &cmd);526 if (ret)527 goto err;528 529 /* set digital if frequency if needed */530 if (if_frequency != dev->if_frequency) {531 memcpy(cmd.args, "\x14\x00\x06\x07", 4);532 cmd.args[4] = (if_frequency / 1000) & 0xff;533 cmd.args[5] = ((if_frequency / 1000) >> 8) & 0xff;534 cmd.wlen = 6;535 cmd.rlen = 4;536 ret = si2157_cmd_execute(client, &cmd);537 if (ret)538 goto err;539 540 dev->if_frequency = if_frequency;541 }542 543 /* set digital frequency */544 memcpy(cmd.args, "\x41\x00\x00\x00\x00\x00\x00\x00", 8);545 cmd.args[4] = (c->frequency >> 0) & 0xff;546 cmd.args[5] = (c->frequency >> 8) & 0xff;547 cmd.args[6] = (c->frequency >> 16) & 0xff;548 cmd.args[7] = (c->frequency >> 24) & 0xff;549 cmd.wlen = 8;550 cmd.rlen = 1;551 ret = si2157_cmd_execute(client, &cmd);552 if (ret)553 goto err;554 555 dev->bandwidth = bandwidth;556 dev->frequency = c->frequency;557 558 si2157_tune_wait(client, 1); /* wait to complete, ignore any errors */559 560 return 0;561err:562 dev->bandwidth = 0;563 dev->frequency = 0;564 dev->if_frequency = 0;565 dev_dbg(&client->dev, "failed=%d\n", ret);566 return ret;567}568 569static int si2157_set_analog_params(struct dvb_frontend *fe,570 struct analog_parameters *params)571{572 struct i2c_client *client = fe->tuner_priv;573 struct si2157_dev *dev = i2c_get_clientdata(client);574 char *std; /* for debugging */575 int ret;576 struct si2157_cmd cmd;577 u32 bandwidth = 0;578 u32 if_frequency = 0;579 u32 freq = 0;580 u64 tmp_lval = 0;581 u8 system = 0;582 u8 color = 0; /* 0=NTSC/PAL, 0x10=SECAM */583 u8 invert_analog = 1; /* analog tuner spectrum; 0=normal, 1=inverted */584 585 if (!SUPPORTS_ATV_IF(dev)) {586 dev_info(&client->dev, "Analog tuning not supported yet for Si21%d\n",587 dev->part_id);588 ret = -EINVAL;589 goto err;590 }591 592 if (!dev->active)593 si2157_init(fe);594 595 if (!dev->active) {596 ret = -EAGAIN;597 goto err;598 }599 if (params->mode == V4L2_TUNER_RADIO) {600 /*601 * std = "fm";602 * bandwidth = 1700000; //best can do for FM, AGC will be a mess though603 * if_frequency = 1250000; //HVR-225x(saa7164), HVR-12xx(cx23885)604 * if_frequency = 6600000; //HVR-9xx(cx231xx)605 * if_frequency = 5500000; //HVR-19xx(pvrusb2)606 */607 dev_err(&client->dev, "si2157 does not currently support FM radio\n");608 ret = -EINVAL;609 goto err;610 }611 tmp_lval = params->frequency * 625LL;612 do_div(tmp_lval, 10); /* convert to HZ */613 freq = (u32)tmp_lval;614 615 if (freq < 1000000) /* is freq in KHz */616 freq = freq * 1000;617 dev->frequency = freq;618 619 /* if_frequency values based on tda187271C2 */620 if (params->std & (V4L2_STD_B | V4L2_STD_GH)) {621 if (freq >= 470000000) {622 std = "palGH";623 bandwidth = 8000000;624 if_frequency = 6000000;625 system = 1;626 if (params->std &627 (V4L2_STD_SECAM_G | V4L2_STD_SECAM_H)) {628 std = "secamGH";629 color = 0x10;630 }631 } else {632 std = "palB";633 bandwidth = 7000000;634 if_frequency = 6000000;635 system = 0;636 if (params->std & V4L2_STD_SECAM_B) {637 std = "secamB";638 color = 0x10;639 }640 }641 } else if (params->std & V4L2_STD_MN) {642 std = "MN";643 bandwidth = 6000000;644 if_frequency = 5400000;645 system = 2;646 } else if (params->std & V4L2_STD_PAL_I) {647 std = "palI";648 bandwidth = 8000000;649 if_frequency = 7250000; /* TODO: does not work yet */650 system = 4;651 } else if (params->std & V4L2_STD_DK) {652 std = "palDK";653 bandwidth = 8000000;654 if_frequency = 6900000; /* TODO: does not work yet */655 system = 5;656 if (params->std & V4L2_STD_SECAM_DK) {657 std = "secamDK";658 color = 0x10;659 }660 } else if (params->std & V4L2_STD_SECAM_L) {661 std = "secamL";662 bandwidth = 8000000;663 if_frequency = 6750000; /* TODO: untested */664 system = 6;665 color = 0x10;666 } else if (params->std & V4L2_STD_SECAM_LC) {667 std = "secamL'";668 bandwidth = 7000000;669 if_frequency = 1250000; /* TODO: untested */670 system = 7;671 color = 0x10;672 } else {673 std = "unknown";674 }675 /* calc channel center freq */676 freq = freq - 1250000 + (bandwidth / 2);677 678 dev_dbg(&client->dev,679 "mode=%d system=%u std='%s' params->frequency=%u center freq=%u if=%u bandwidth=%u\n",680 params->mode, system, std, params->frequency,681 freq, if_frequency, bandwidth);682 683 /* set analog IF port */684 memcpy(cmd.args, "\x14\x00\x03\x06\x08\x02", 6);685 /* in using dev->if_port, we assume analog and digital IF's */686 /* are always on different ports */687 /* assumes if_port definition is 0 or 1 for digital out */688 cmd.args[4] = (dev->if_port == 1) ? 8 : 10;689 /* Analog AGC assumed external */690 cmd.args[5] = (dev->if_port == 1) ? 2 : 1;691 cmd.wlen = 6;692 cmd.rlen = 4;693 ret = si2157_cmd_execute(client, &cmd);694 if (ret)695 goto err;696 697 /* set analog IF output config */698 memcpy(cmd.args, "\x14\x00\x0d\x06\x94\x64", 6);699 cmd.wlen = 6;700 cmd.rlen = 4;701 ret = si2157_cmd_execute(client, &cmd);702 if (ret)703 goto err;704 705 /* make this distinct from a digital IF */706 dev->if_frequency = if_frequency | 1;707 708 /* calc and set tuner analog if center frequency */709 if_frequency = if_frequency + 1250000 - (bandwidth / 2);710 dev_dbg(&client->dev, "IF Ctr freq=%d\n", if_frequency);711 712 memcpy(cmd.args, "\x14\x00\x0C\x06", 4);713 cmd.args[4] = (if_frequency / 1000) & 0xff;714 cmd.args[5] = ((if_frequency / 1000) >> 8) & 0xff;715 cmd.wlen = 6;716 cmd.rlen = 4;717 ret = si2157_cmd_execute(client, &cmd);718 if (ret)719 goto err;720 721 /* set analog AGC config */722 memcpy(cmd.args, "\x14\x00\x07\x06\x32\xc8", 6);723 cmd.wlen = 6;724 cmd.rlen = 4;725 ret = si2157_cmd_execute(client, &cmd);726 if (ret)727 goto err;728 729 /* set analog video mode */730 memcpy(cmd.args, "\x14\x00\x04\x06\x00\x00", 6);731 cmd.args[4] = system | color;732 /* can use dev->inversion if assumed applies to both digital/analog */733 if (invert_analog)734 cmd.args[5] |= 0x02;735 cmd.wlen = 6;736 cmd.rlen = 1;737 ret = si2157_cmd_execute(client, &cmd);738 if (ret)739 goto err;740 741 /* set analog frequency */742 memcpy(cmd.args, "\x41\x01\x00\x00\x00\x00\x00\x00", 8);743 cmd.args[4] = (freq >> 0) & 0xff;744 cmd.args[5] = (freq >> 8) & 0xff;745 cmd.args[6] = (freq >> 16) & 0xff;746 cmd.args[7] = (freq >> 24) & 0xff;747 cmd.wlen = 8;748 cmd.rlen = 1;749 ret = si2157_cmd_execute(client, &cmd);750 if (ret)751 goto err;752 753 dev->bandwidth = bandwidth;754 755 si2157_tune_wait(client, 0); /* wait to complete, ignore any errors */756 757 return 0;758err:759 dev->bandwidth = 0;760 dev->frequency = 0;761 dev->if_frequency = 0;762 dev_dbg(&client->dev, "failed=%d\n", ret);763 return ret;764}765 766static int si2157_get_frequency(struct dvb_frontend *fe, u32 *frequency)767{768 struct i2c_client *client = fe->tuner_priv;769 struct si2157_dev *dev = i2c_get_clientdata(client);770 771 *frequency = dev->frequency;772 dev_dbg(&client->dev, "freq=%u\n", dev->frequency);773 return 0;774}775 776static int si2157_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)777{778 struct i2c_client *client = fe->tuner_priv;779 struct si2157_dev *dev = i2c_get_clientdata(client);780 781 *bandwidth = dev->bandwidth;782 dev_dbg(&client->dev, "bandwidth=%u\n", dev->bandwidth);783 return 0;784}785 786static int si2157_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)787{788 struct i2c_client *client = fe->tuner_priv;789 struct si2157_dev *dev = i2c_get_clientdata(client);790 791 *frequency = dev->if_frequency & ~1; /* strip analog IF indicator bit */792 dev_dbg(&client->dev, "if_frequency=%u\n", *frequency);793 return 0;794}795 796static int si2157_get_rf_strength(struct dvb_frontend *fe, u16 *rssi)797{798 struct i2c_client *client = fe->tuner_priv;799 struct dtv_frontend_properties *c = &fe->dtv_property_cache;800 struct si2157_cmd cmd;801 int ret;802 int strength;803 804 dev_dbg(&client->dev, "\n");805 806 memcpy(cmd.args, "\x42\x00", 2);807 cmd.wlen = 2;808 cmd.rlen = 12;809 ret = si2157_cmd_execute(client, &cmd);810 if (ret)811 goto err;812 813 c->strength.stat[0].scale = FE_SCALE_DECIBEL;814 c->strength.stat[0].svalue = (s8)cmd.args[3] * 1000;815 816 /* normalize values based on Silicon Labs reference817 * add 100, then anything > 80 is 100% signal818 */819 strength = (s8)cmd.args[3] + 100;820 strength = clamp_val(strength, 0, 80);821 *rssi = (u16)(strength * 0xffff / 80);822 823 dev_dbg(&client->dev, "strength=%d rssi=%u\n",824 (s8)cmd.args[3], *rssi);825 826 return 0;827err:828 dev_dbg(&client->dev, "failed=%d\n", ret);829 return ret;830}831 832static const struct dvb_tuner_ops si2157_ops = {833 .info = {834 .name = "Silicon Labs Si2141/Si2146/2147/2148/2157/2158",835 .frequency_min_hz = 42 * MHz,836 .frequency_max_hz = 870 * MHz,837 },838 839 .init = si2157_init,840 .sleep = si2157_sleep,841 .set_params = si2157_set_params,842 .set_analog_params = si2157_set_analog_params,843 .get_frequency = si2157_get_frequency,844 .get_bandwidth = si2157_get_bandwidth,845 .get_if_frequency = si2157_get_if_frequency,846 847 .get_rf_strength = si2157_get_rf_strength,848};849 850static void si2157_stat_work(struct work_struct *work)851{852 struct si2157_dev *dev = container_of(work, struct si2157_dev, stat_work.work);853 struct dvb_frontend *fe = dev->fe;854 struct i2c_client *client = fe->tuner_priv;855 struct dtv_frontend_properties *c = &fe->dtv_property_cache;856 struct si2157_cmd cmd;857 int ret;858 859 dev_dbg(&client->dev, "\n");860 861 memcpy(cmd.args, "\x42\x00", 2);862 cmd.wlen = 2;863 cmd.rlen = 12;864 ret = si2157_cmd_execute(client, &cmd);865 if (ret)866 goto err;867 868 c->strength.stat[0].scale = FE_SCALE_DECIBEL;869 c->strength.stat[0].svalue = (s8) cmd.args[3] * 1000;870 871 schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));872 return;873err:874 c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;875 dev_dbg(&client->dev, "failed=%d\n", ret);876}877 878static int si2157_probe(struct i2c_client *client)879{880 const struct i2c_device_id *id = i2c_client_get_device_id(client);881 struct si2157_config *cfg = client->dev.platform_data;882 struct dvb_frontend *fe = cfg->fe;883 struct si2157_dev *dev;884 struct si2157_cmd cmd;885 int ret;886 887 dev = kzalloc(sizeof(*dev), GFP_KERNEL);888 if (!dev) {889 ret = -ENOMEM;890 dev_err(&client->dev, "kzalloc() failed\n");891 goto err;892 }893 894 i2c_set_clientdata(client, dev);895 dev->fe = cfg->fe;896 dev->inversion = cfg->inversion;897 dev->dont_load_firmware = cfg->dont_load_firmware;898 dev->if_port = cfg->if_port;899 dev->part_id = (u8)id->driver_data;900 dev->if_frequency = 5000000; /* default value of property 0x0706 */901 mutex_init(&dev->i2c_mutex);902 INIT_DELAYED_WORK(&dev->stat_work, si2157_stat_work);903 904 /* check if the tuner is there */905 cmd.wlen = 0;906 cmd.rlen = 1;907 ret = si2157_cmd_execute(client, &cmd);908 if (ret && ret != -EAGAIN)909 goto err_kfree;910 911 memcpy(&fe->ops.tuner_ops, &si2157_ops, sizeof(struct dvb_tuner_ops));912 fe->tuner_priv = client;913 914#ifdef CONFIG_MEDIA_CONTROLLER915 if (cfg->mdev) {916 dev->mdev = cfg->mdev;917 918 dev->ent.name = KBUILD_MODNAME;919 dev->ent.function = MEDIA_ENT_F_TUNER;920 921 dev->pad[SI2157_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK;922 dev->pad[SI2157_PAD_RF_INPUT].sig_type = PAD_SIGNAL_ANALOG;923 dev->pad[SI2157_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE;924 dev->pad[SI2157_PAD_VID_OUT].sig_type = PAD_SIGNAL_ANALOG;925 dev->pad[SI2157_PAD_AUD_OUT].flags = MEDIA_PAD_FL_SOURCE;926 dev->pad[SI2157_PAD_AUD_OUT].sig_type = PAD_SIGNAL_AUDIO;927 928 ret = media_entity_pads_init(&dev->ent, SI2157_NUM_PADS,929 &dev->pad[0]);930 931 if (ret)932 goto err_kfree;933 934 ret = media_device_register_entity(cfg->mdev, &dev->ent);935 if (ret) {936 media_entity_cleanup(&dev->ent);937 goto err_kfree;938 }939 }940#endif941 942 dev_info(&client->dev, "Silicon Labs Si21%d successfully attached\n",943 dev->part_id);944 945 return 0;946 947err_kfree:948 kfree(dev);949err:950 dev_dbg(&client->dev, "failed=%d\n", ret);951 return ret;952}953 954static void si2157_remove(struct i2c_client *client)955{956 struct si2157_dev *dev = i2c_get_clientdata(client);957 struct dvb_frontend *fe = dev->fe;958 959 dev_dbg(&client->dev, "\n");960 961 /* stop statistics polling */962 cancel_delayed_work_sync(&dev->stat_work);963 964#ifdef CONFIG_MEDIA_CONTROLLER_DVB965 if (dev->mdev)966 media_device_unregister_entity(&dev->ent);967#endif968 969 memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));970 fe->tuner_priv = NULL;971 kfree(dev);972}973 974/*975 * The part_id used here will only be used on buggy devices that don't976 * accept firmware uploads. Non-buggy devices should just use "si2157" for977 * all SiLabs TER tuners, as the driver should auto-detect it.978 */979static const struct i2c_device_id si2157_id_table[] = {980 {"si2157", SI2157},981 {"si2146", SI2146},982 {"si2141", SI2141},983 {"si2177", SI2177},984 {}985};986MODULE_DEVICE_TABLE(i2c, si2157_id_table);987 988static struct i2c_driver si2157_driver = {989 .driver = {990 .name = "si2157",991 .suppress_bind_attrs = true,992 },993 .probe = si2157_probe,994 .remove = si2157_remove,995 .id_table = si2157_id_table,996};997 998module_i2c_driver(si2157_driver);999 1000MODULE_DESCRIPTION("Silicon Labs Si2141/Si2146/2147/2148/2157/2158 silicon tuner driver");1001MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");1002MODULE_LICENSE("GPL");1003MODULE_FIRMWARE(SI2158_A20_FIRMWARE);1004MODULE_FIRMWARE(SI2141_A10_FIRMWARE);1005MODULE_FIRMWARE(SI2157_A30_FIRMWARE);1006MODULE_FIRMWARE(SI2141_60_FIRMWARE);1007MODULE_FIRMWARE(SI2141_61_FIRMWARE);1008MODULE_FIRMWARE(SI2146_11_FIRMWARE);1009MODULE_FIRMWARE(SI2147_50_FIRMWARE);1010MODULE_FIRMWARE(SI2148_32_FIRMWARE);1011MODULE_FIRMWARE(SI2148_33_FIRMWARE);1012MODULE_FIRMWARE(SI2157_50_FIRMWARE);1013MODULE_FIRMWARE(SI2158_50_FIRMWARE);1014MODULE_FIRMWARE(SI2158_51_FIRMWARE);1015MODULE_FIRMWARE(SI2177_50_FIRMWARE);1016