1711615dfSAntti Palosaari /* 2711615dfSAntti Palosaari * Silicon Labs Si2168 DVB-T/T2/C demodulator driver 3711615dfSAntti Palosaari * 4711615dfSAntti Palosaari * Copyright (C) 2014 Antti Palosaari <crope@iki.fi> 5711615dfSAntti Palosaari * 6711615dfSAntti Palosaari * This program is free software; you can redistribute it and/or modify 7711615dfSAntti Palosaari * it under the terms of the GNU General Public License as published by 8711615dfSAntti Palosaari * the Free Software Foundation; either version 2 of the License, or 9711615dfSAntti Palosaari * (at your option) any later version. 10711615dfSAntti Palosaari * 11711615dfSAntti Palosaari * This program is distributed in the hope that it will be useful, 12711615dfSAntti Palosaari * but WITHOUT ANY WARRANTY; without even the implied warranty of 13711615dfSAntti Palosaari * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14711615dfSAntti Palosaari * GNU General Public License for more details. 15711615dfSAntti Palosaari */ 16711615dfSAntti Palosaari 17845f3505SAntti Palosaari #include "si2168_priv.h" 18845f3505SAntti Palosaari 19845f3505SAntti Palosaari static const struct dvb_frontend_ops si2168_ops; 20845f3505SAntti Palosaari 21845f3505SAntti Palosaari /* execute firmware command */ 22845f3505SAntti Palosaari static int si2168_cmd_execute(struct si2168 *s, struct si2168_cmd *cmd) 23845f3505SAntti Palosaari { 24845f3505SAntti Palosaari int ret; 25845f3505SAntti Palosaari unsigned long timeout; 26845f3505SAntti Palosaari 27845f3505SAntti Palosaari mutex_lock(&s->i2c_mutex); 28845f3505SAntti Palosaari 29845f3505SAntti Palosaari if (cmd->wlen) { 30845f3505SAntti Palosaari /* write cmd and args for firmware */ 31845f3505SAntti Palosaari ret = i2c_master_send(s->client, cmd->args, cmd->wlen); 32845f3505SAntti Palosaari if (ret < 0) { 33845f3505SAntti Palosaari goto err_mutex_unlock; 34845f3505SAntti Palosaari } else if (ret != cmd->wlen) { 35845f3505SAntti Palosaari ret = -EREMOTEIO; 36845f3505SAntti Palosaari goto err_mutex_unlock; 37845f3505SAntti Palosaari } 38845f3505SAntti Palosaari } 39845f3505SAntti Palosaari 40845f3505SAntti Palosaari if (cmd->rlen) { 41845f3505SAntti Palosaari /* wait cmd execution terminate */ 42845f3505SAntti Palosaari #define TIMEOUT 50 43845f3505SAntti Palosaari timeout = jiffies + msecs_to_jiffies(TIMEOUT); 44845f3505SAntti Palosaari while (!time_after(jiffies, timeout)) { 45845f3505SAntti Palosaari ret = i2c_master_recv(s->client, cmd->args, cmd->rlen); 46845f3505SAntti Palosaari if (ret < 0) { 47845f3505SAntti Palosaari goto err_mutex_unlock; 48845f3505SAntti Palosaari } else if (ret != cmd->rlen) { 49845f3505SAntti Palosaari ret = -EREMOTEIO; 50845f3505SAntti Palosaari goto err_mutex_unlock; 51845f3505SAntti Palosaari } 52845f3505SAntti Palosaari 53845f3505SAntti Palosaari /* firmware ready? */ 54845f3505SAntti Palosaari if ((cmd->args[0] >> 7) & 0x01) 55845f3505SAntti Palosaari break; 56845f3505SAntti Palosaari } 57845f3505SAntti Palosaari 58845f3505SAntti Palosaari dev_dbg(&s->client->dev, "%s: cmd execution took %d ms\n", 59845f3505SAntti Palosaari __func__, 60845f3505SAntti Palosaari jiffies_to_msecs(jiffies) - 61845f3505SAntti Palosaari (jiffies_to_msecs(timeout) - TIMEOUT)); 62845f3505SAntti Palosaari 63845f3505SAntti Palosaari if (!(cmd->args[0] >> 7) & 0x01) { 64845f3505SAntti Palosaari ret = -ETIMEDOUT; 65845f3505SAntti Palosaari goto err_mutex_unlock; 66845f3505SAntti Palosaari } 67845f3505SAntti Palosaari } 68845f3505SAntti Palosaari 69845f3505SAntti Palosaari ret = 0; 70845f3505SAntti Palosaari 71845f3505SAntti Palosaari err_mutex_unlock: 72845f3505SAntti Palosaari mutex_unlock(&s->i2c_mutex); 73845f3505SAntti Palosaari if (ret) 74845f3505SAntti Palosaari goto err; 75845f3505SAntti Palosaari 76845f3505SAntti Palosaari return 0; 77845f3505SAntti Palosaari err: 78845f3505SAntti Palosaari dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret); 79845f3505SAntti Palosaari return ret; 80845f3505SAntti Palosaari } 81845f3505SAntti Palosaari 82845f3505SAntti Palosaari static int si2168_read_status(struct dvb_frontend *fe, fe_status_t *status) 83845f3505SAntti Palosaari { 84845f3505SAntti Palosaari struct si2168 *s = fe->demodulator_priv; 85bffab93cSAntti Palosaari struct dtv_frontend_properties *c = &fe->dtv_property_cache; 86845f3505SAntti Palosaari int ret; 87845f3505SAntti Palosaari struct si2168_cmd cmd; 88845f3505SAntti Palosaari 89845f3505SAntti Palosaari *status = 0; 90845f3505SAntti Palosaari 91845f3505SAntti Palosaari if (!s->active) { 92845f3505SAntti Palosaari ret = -EAGAIN; 93845f3505SAntti Palosaari goto err; 94845f3505SAntti Palosaari } 95845f3505SAntti Palosaari 96bffab93cSAntti Palosaari switch (c->delivery_system) { 97bffab93cSAntti Palosaari case SYS_DVBT: 98888680ffSAntti Palosaari memcpy(cmd.args, "\xa0\x01", 2); 99845f3505SAntti Palosaari cmd.wlen = 2; 100845f3505SAntti Palosaari cmd.rlen = 13; 101bffab93cSAntti Palosaari break; 102c790885bSAntti Palosaari case SYS_DVBC_ANNEX_A: 103888680ffSAntti Palosaari memcpy(cmd.args, "\x90\x01", 2); 104c790885bSAntti Palosaari cmd.wlen = 2; 105c790885bSAntti Palosaari cmd.rlen = 9; 106c790885bSAntti Palosaari break; 107bffab93cSAntti Palosaari case SYS_DVBT2: 108888680ffSAntti Palosaari memcpy(cmd.args, "\x50\x01", 2); 109bffab93cSAntti Palosaari cmd.wlen = 2; 110bffab93cSAntti Palosaari cmd.rlen = 14; 111bffab93cSAntti Palosaari break; 112bffab93cSAntti Palosaari default: 113bffab93cSAntti Palosaari ret = -EINVAL; 114bffab93cSAntti Palosaari goto err; 115bffab93cSAntti Palosaari } 116bffab93cSAntti Palosaari 117845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 118845f3505SAntti Palosaari if (ret) 119845f3505SAntti Palosaari goto err; 120845f3505SAntti Palosaari 121845f3505SAntti Palosaari /* 122845f3505SAntti Palosaari * Possible values seen, in order from strong signal to weak: 123845f3505SAntti Palosaari * 16 0001 0110 full lock 124845f3505SAntti Palosaari * 1e 0001 1110 partial lock 125845f3505SAntti Palosaari * 1a 0001 1010 partial lock 126845f3505SAntti Palosaari * 18 0001 1000 no lock 127845f3505SAntti Palosaari * 128845f3505SAntti Palosaari * [b3:b1] lock bits 129845f3505SAntti Palosaari * [b4] statistics ready? Set in a few secs after lock is gained. 130845f3505SAntti Palosaari */ 131845f3505SAntti Palosaari 132722a042dSAntti Palosaari switch ((cmd.args[2] >> 1) & 0x03) { 133722a042dSAntti Palosaari case 0x01: 134845f3505SAntti Palosaari *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; 135845f3505SAntti Palosaari break; 136722a042dSAntti Palosaari case 0x03: 137845f3505SAntti Palosaari *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | 138845f3505SAntti Palosaari FE_HAS_SYNC | FE_HAS_LOCK; 139845f3505SAntti Palosaari break; 140845f3505SAntti Palosaari } 141845f3505SAntti Palosaari 142845f3505SAntti Palosaari s->fe_status = *status; 143845f3505SAntti Palosaari 14488ac8f86SAntti Palosaari if (*status & FE_HAS_LOCK) { 14588ac8f86SAntti Palosaari c->cnr.len = 1; 14688ac8f86SAntti Palosaari c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 14788ac8f86SAntti Palosaari c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4; 14888ac8f86SAntti Palosaari } else { 14988ac8f86SAntti Palosaari c->cnr.len = 1; 15088ac8f86SAntti Palosaari c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 15188ac8f86SAntti Palosaari } 15288ac8f86SAntti Palosaari 153845f3505SAntti Palosaari dev_dbg(&s->client->dev, "%s: status=%02x args=%*ph\n", 154845f3505SAntti Palosaari __func__, *status, cmd.rlen, cmd.args); 155845f3505SAntti Palosaari 156845f3505SAntti Palosaari return 0; 157845f3505SAntti Palosaari err: 158845f3505SAntti Palosaari dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret); 159845f3505SAntti Palosaari return ret; 160845f3505SAntti Palosaari } 161845f3505SAntti Palosaari 162845f3505SAntti Palosaari static int si2168_set_frontend(struct dvb_frontend *fe) 163845f3505SAntti Palosaari { 164845f3505SAntti Palosaari struct si2168 *s = fe->demodulator_priv; 165845f3505SAntti Palosaari struct dtv_frontend_properties *c = &fe->dtv_property_cache; 166845f3505SAntti Palosaari int ret; 167845f3505SAntti Palosaari struct si2168_cmd cmd; 168bffab93cSAntti Palosaari u8 bandwidth, delivery_system; 169845f3505SAntti Palosaari 170845f3505SAntti Palosaari dev_dbg(&s->client->dev, 171845f3505SAntti Palosaari "%s: delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u\n", 172845f3505SAntti Palosaari __func__, c->delivery_system, c->modulation, 173845f3505SAntti Palosaari c->frequency, c->bandwidth_hz, c->symbol_rate, 174845f3505SAntti Palosaari c->inversion); 175845f3505SAntti Palosaari 176845f3505SAntti Palosaari if (!s->active) { 177845f3505SAntti Palosaari ret = -EAGAIN; 178845f3505SAntti Palosaari goto err; 179845f3505SAntti Palosaari } 180845f3505SAntti Palosaari 181bffab93cSAntti Palosaari switch (c->delivery_system) { 182bffab93cSAntti Palosaari case SYS_DVBT: 183bffab93cSAntti Palosaari delivery_system = 0x20; 184bffab93cSAntti Palosaari break; 185c790885bSAntti Palosaari case SYS_DVBC_ANNEX_A: 186c790885bSAntti Palosaari delivery_system = 0x30; 187c790885bSAntti Palosaari break; 188bffab93cSAntti Palosaari case SYS_DVBT2: 189bffab93cSAntti Palosaari delivery_system = 0x70; 190bffab93cSAntti Palosaari break; 191bffab93cSAntti Palosaari default: 192bffab93cSAntti Palosaari ret = -EINVAL; 193bffab93cSAntti Palosaari goto err; 194bffab93cSAntti Palosaari } 195bffab93cSAntti Palosaari 196c790885bSAntti Palosaari if (c->bandwidth_hz <= 5000000) 197bffab93cSAntti Palosaari bandwidth = 0x05; 198c790885bSAntti Palosaari else if (c->bandwidth_hz <= 6000000) 199bffab93cSAntti Palosaari bandwidth = 0x06; 200c790885bSAntti Palosaari else if (c->bandwidth_hz <= 7000000) 201bffab93cSAntti Palosaari bandwidth = 0x07; 202c790885bSAntti Palosaari else if (c->bandwidth_hz <= 8000000) 203bffab93cSAntti Palosaari bandwidth = 0x08; 204c790885bSAntti Palosaari else if (c->bandwidth_hz <= 9000000) 205c790885bSAntti Palosaari bandwidth = 0x09; 206c790885bSAntti Palosaari else if (c->bandwidth_hz <= 10000000) 207c790885bSAntti Palosaari bandwidth = 0x0a; 208c790885bSAntti Palosaari else 209c790885bSAntti Palosaari bandwidth = 0x0f; 210845f3505SAntti Palosaari 211845f3505SAntti Palosaari /* program tuner */ 212845f3505SAntti Palosaari if (fe->ops.tuner_ops.set_params) { 213845f3505SAntti Palosaari ret = fe->ops.tuner_ops.set_params(fe); 214845f3505SAntti Palosaari if (ret) 215845f3505SAntti Palosaari goto err; 216845f3505SAntti Palosaari } 217845f3505SAntti Palosaari 218845f3505SAntti Palosaari memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5); 219845f3505SAntti Palosaari cmd.wlen = 5; 220845f3505SAntti Palosaari cmd.rlen = 5; 221845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 222845f3505SAntti Palosaari if (ret) 223845f3505SAntti Palosaari goto err; 224845f3505SAntti Palosaari 225bffab93cSAntti Palosaari /* that has no big effect */ 226bffab93cSAntti Palosaari if (c->delivery_system == SYS_DVBT) 227845f3505SAntti Palosaari memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6); 228c790885bSAntti Palosaari else if (c->delivery_system == SYS_DVBC_ANNEX_A) 229c790885bSAntti Palosaari memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6); 230bffab93cSAntti Palosaari else if (c->delivery_system == SYS_DVBT2) 231bffab93cSAntti Palosaari memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6); 232845f3505SAntti Palosaari cmd.wlen = 6; 233845f3505SAntti Palosaari cmd.rlen = 3; 234845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 235845f3505SAntti Palosaari if (ret) 236845f3505SAntti Palosaari goto err; 237845f3505SAntti Palosaari 238845f3505SAntti Palosaari memcpy(cmd.args, "\x51\x03", 2); 239845f3505SAntti Palosaari cmd.wlen = 2; 240845f3505SAntti Palosaari cmd.rlen = 12; 241845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 242845f3505SAntti Palosaari if (ret) 243845f3505SAntti Palosaari goto err; 244845f3505SAntti Palosaari 245845f3505SAntti Palosaari memcpy(cmd.args, "\x12\x08\x04", 3); 246845f3505SAntti Palosaari cmd.wlen = 3; 247845f3505SAntti Palosaari cmd.rlen = 3; 248845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 249845f3505SAntti Palosaari if (ret) 250845f3505SAntti Palosaari goto err; 251845f3505SAntti Palosaari 252845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6); 253845f3505SAntti Palosaari cmd.wlen = 6; 2541d518c27SAntti Palosaari cmd.rlen = 4; 255845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 256845f3505SAntti Palosaari if (ret) 257845f3505SAntti Palosaari goto err; 258845f3505SAntti Palosaari 259845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6); 260845f3505SAntti Palosaari cmd.wlen = 6; 2611d518c27SAntti Palosaari cmd.rlen = 4; 262845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 263845f3505SAntti Palosaari if (ret) 264845f3505SAntti Palosaari goto err; 265845f3505SAntti Palosaari 266845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6); 267845f3505SAntti Palosaari cmd.wlen = 6; 2681d518c27SAntti Palosaari cmd.rlen = 4; 269845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 270845f3505SAntti Palosaari if (ret) 271845f3505SAntti Palosaari goto err; 272845f3505SAntti Palosaari 273845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6); 274bffab93cSAntti Palosaari cmd.args[4] = delivery_system | bandwidth; 275845f3505SAntti Palosaari cmd.wlen = 6; 2761d518c27SAntti Palosaari cmd.rlen = 4; 277845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 278845f3505SAntti Palosaari if (ret) 279845f3505SAntti Palosaari goto err; 280845f3505SAntti Palosaari 28132bf8818SLuis Alves /* set DVB-C symbol rate */ 28232bf8818SLuis Alves if (c->delivery_system == SYS_DVBC_ANNEX_A) { 28332bf8818SLuis Alves memcpy(cmd.args, "\x14\x00\x02\x11", 4); 28432bf8818SLuis Alves cmd.args[4] = (c->symbol_rate / 1000) & 0xff; 28532bf8818SLuis Alves cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; 28632bf8818SLuis Alves cmd.wlen = 6; 28732bf8818SLuis Alves cmd.rlen = 4; 28832bf8818SLuis Alves ret = si2168_cmd_execute(s, &cmd); 28932bf8818SLuis Alves if (ret) 29032bf8818SLuis Alves goto err; 29132bf8818SLuis Alves } 29232bf8818SLuis Alves 293845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6); 294845f3505SAntti Palosaari cmd.wlen = 6; 2951d518c27SAntti Palosaari cmd.rlen = 4; 296845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 297845f3505SAntti Palosaari if (ret) 298845f3505SAntti Palosaari goto err; 299845f3505SAntti Palosaari 30093f72639SAntti Palosaari memcpy(cmd.args, "\x14\x00\x01\x10\x16\x00", 6); 301845f3505SAntti Palosaari cmd.wlen = 6; 3021d518c27SAntti Palosaari cmd.rlen = 4; 303845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 304845f3505SAntti Palosaari if (ret) 305845f3505SAntti Palosaari goto err; 306845f3505SAntti Palosaari 307845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x18", 6); 308845f3505SAntti Palosaari cmd.wlen = 6; 3091d518c27SAntti Palosaari cmd.rlen = 4; 310845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 311845f3505SAntti Palosaari if (ret) 312845f3505SAntti Palosaari goto err; 313845f3505SAntti Palosaari 314845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x15", 6); 315845f3505SAntti Palosaari cmd.wlen = 6; 3161d518c27SAntti Palosaari cmd.rlen = 4; 317845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 318845f3505SAntti Palosaari if (ret) 319845f3505SAntti Palosaari goto err; 320845f3505SAntti Palosaari 321845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); 322845f3505SAntti Palosaari cmd.wlen = 6; 3231d518c27SAntti Palosaari cmd.rlen = 4; 324845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 325845f3505SAntti Palosaari if (ret) 326845f3505SAntti Palosaari goto err; 327845f3505SAntti Palosaari 32843911776SOlli Salonen memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6); 32943911776SOlli Salonen cmd.wlen = 6; 33043911776SOlli Salonen cmd.rlen = 4; 33143911776SOlli Salonen ret = si2168_cmd_execute(s, &cmd); 33243911776SOlli Salonen if (ret) 33343911776SOlli Salonen goto err; 33443911776SOlli Salonen 335888680ffSAntti Palosaari memcpy(cmd.args, "\x85", 1); 336845f3505SAntti Palosaari cmd.wlen = 1; 337845f3505SAntti Palosaari cmd.rlen = 1; 338845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 339845f3505SAntti Palosaari if (ret) 340845f3505SAntti Palosaari goto err; 341845f3505SAntti Palosaari 342845f3505SAntti Palosaari s->delivery_system = c->delivery_system; 343845f3505SAntti Palosaari 344845f3505SAntti Palosaari return 0; 345845f3505SAntti Palosaari err: 346845f3505SAntti Palosaari dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret); 347845f3505SAntti Palosaari return ret; 348845f3505SAntti Palosaari } 349845f3505SAntti Palosaari 350845f3505SAntti Palosaari static int si2168_init(struct dvb_frontend *fe) 351845f3505SAntti Palosaari { 352845f3505SAntti Palosaari struct si2168 *s = fe->demodulator_priv; 353845f3505SAntti Palosaari int ret, len, remaining; 354845f3505SAntti Palosaari const struct firmware *fw = NULL; 355c9cb0820SOlli Salonen u8 *fw_file; 356845f3505SAntti Palosaari const unsigned int i2c_wr_max = 8; 357845f3505SAntti Palosaari struct si2168_cmd cmd; 358b6b6fd6fSAntti Palosaari unsigned int chip_id; 359845f3505SAntti Palosaari 360845f3505SAntti Palosaari dev_dbg(&s->client->dev, "%s:\n", __func__); 361845f3505SAntti Palosaari 362888680ffSAntti Palosaari memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 363845f3505SAntti Palosaari cmd.wlen = 13; 364845f3505SAntti Palosaari cmd.rlen = 0; 365845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 366845f3505SAntti Palosaari if (ret) 367845f3505SAntti Palosaari goto err; 368845f3505SAntti Palosaari 369888680ffSAntti Palosaari memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 370845f3505SAntti Palosaari cmd.wlen = 8; 371845f3505SAntti Palosaari cmd.rlen = 1; 372845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 373845f3505SAntti Palosaari if (ret) 374845f3505SAntti Palosaari goto err; 375845f3505SAntti Palosaari 376c9cb0820SOlli Salonen /* query chip revision */ 377888680ffSAntti Palosaari memcpy(cmd.args, "\x02", 1); 378845f3505SAntti Palosaari cmd.wlen = 1; 379845f3505SAntti Palosaari cmd.rlen = 13; 380845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 381845f3505SAntti Palosaari if (ret) 382845f3505SAntti Palosaari goto err; 383845f3505SAntti Palosaari 384845f3505SAntti Palosaari cmd.args[0] = 0x05; 385845f3505SAntti Palosaari cmd.args[1] = 0x00; 386845f3505SAntti Palosaari cmd.args[2] = 0xaa; 387845f3505SAntti Palosaari cmd.args[3] = 0x4d; 388845f3505SAntti Palosaari cmd.args[4] = 0x56; 389845f3505SAntti Palosaari cmd.args[5] = 0x40; 390845f3505SAntti Palosaari cmd.args[6] = 0x00; 391845f3505SAntti Palosaari cmd.args[7] = 0x00; 392845f3505SAntti Palosaari cmd.wlen = 8; 393845f3505SAntti Palosaari cmd.rlen = 1; 394845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 395845f3505SAntti Palosaari if (ret) 396845f3505SAntti Palosaari goto err; 397845f3505SAntti Palosaari 398b6b6fd6fSAntti Palosaari chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 | 399b6b6fd6fSAntti Palosaari cmd.args[4] << 0; 400b6b6fd6fSAntti Palosaari 401b6b6fd6fSAntti Palosaari #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0) 402b6b6fd6fSAntti Palosaari #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0) 403b6b6fd6fSAntti Palosaari 404b6b6fd6fSAntti Palosaari switch (chip_id) { 405b6b6fd6fSAntti Palosaari case SI2168_A30: 406c9cb0820SOlli Salonen fw_file = SI2168_A30_FIRMWARE; 407b6b6fd6fSAntti Palosaari break; 408b6b6fd6fSAntti Palosaari case SI2168_B40: 409b6b6fd6fSAntti Palosaari fw_file = SI2168_B40_FIRMWARE; 410b6b6fd6fSAntti Palosaari break; 411b6b6fd6fSAntti Palosaari default: 412c9cb0820SOlli Salonen dev_err(&s->client->dev, 413b6b6fd6fSAntti Palosaari "%s: unkown chip version Si21%d-%c%c%c\n", 414b6b6fd6fSAntti Palosaari KBUILD_MODNAME, cmd.args[2], cmd.args[1], 415b6b6fd6fSAntti Palosaari cmd.args[3], cmd.args[4]); 416c9cb0820SOlli Salonen ret = -EINVAL; 417c9cb0820SOlli Salonen goto err; 418c9cb0820SOlli Salonen } 419c9cb0820SOlli Salonen 420845f3505SAntti Palosaari /* cold state - try to download firmware */ 421845f3505SAntti Palosaari dev_info(&s->client->dev, "%s: found a '%s' in cold state\n", 422845f3505SAntti Palosaari KBUILD_MODNAME, si2168_ops.info.name); 423845f3505SAntti Palosaari 424845f3505SAntti Palosaari /* request the firmware, this will block and timeout */ 425845f3505SAntti Palosaari ret = request_firmware(&fw, fw_file, &s->client->dev); 426845f3505SAntti Palosaari if (ret) { 427b6b6fd6fSAntti Palosaari /* fallback mechanism to handle old name for Si2168 B40 fw */ 428b6b6fd6fSAntti Palosaari if (chip_id == SI2168_B40) { 429c9cb0820SOlli Salonen fw_file = SI2168_B40_FIRMWARE_FALLBACK; 430c9cb0820SOlli Salonen ret = request_firmware(&fw, fw_file, &s->client->dev); 431c9cb0820SOlli Salonen } 432b6b6fd6fSAntti Palosaari 433b6b6fd6fSAntti Palosaari if (ret == 0) { 434b6b6fd6fSAntti Palosaari dev_notice(&s->client->dev, 435b6b6fd6fSAntti Palosaari "%s: please install firmware file '%s'\n", 436b6b6fd6fSAntti Palosaari KBUILD_MODNAME, SI2168_B40_FIRMWARE); 437b6b6fd6fSAntti Palosaari } else { 438b6b6fd6fSAntti Palosaari dev_err(&s->client->dev, 439b6b6fd6fSAntti Palosaari "%s: firmware file '%s' not found\n", 440845f3505SAntti Palosaari KBUILD_MODNAME, fw_file); 441845f3505SAntti Palosaari goto err; 442845f3505SAntti Palosaari } 443c9cb0820SOlli Salonen } 444845f3505SAntti Palosaari 445845f3505SAntti Palosaari dev_info(&s->client->dev, "%s: downloading firmware from file '%s'\n", 446845f3505SAntti Palosaari KBUILD_MODNAME, fw_file); 447845f3505SAntti Palosaari 448845f3505SAntti Palosaari for (remaining = fw->size; remaining > 0; remaining -= i2c_wr_max) { 449845f3505SAntti Palosaari len = remaining; 450845f3505SAntti Palosaari if (len > i2c_wr_max) 451845f3505SAntti Palosaari len = i2c_wr_max; 452845f3505SAntti Palosaari 453845f3505SAntti Palosaari memcpy(cmd.args, &fw->data[fw->size - remaining], len); 454845f3505SAntti Palosaari cmd.wlen = len; 455845f3505SAntti Palosaari cmd.rlen = 1; 456845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 457845f3505SAntti Palosaari if (ret) { 458845f3505SAntti Palosaari dev_err(&s->client->dev, 459845f3505SAntti Palosaari "%s: firmware download failed=%d\n", 460845f3505SAntti Palosaari KBUILD_MODNAME, ret); 461845f3505SAntti Palosaari goto err; 462845f3505SAntti Palosaari } 463845f3505SAntti Palosaari } 464845f3505SAntti Palosaari 465845f3505SAntti Palosaari release_firmware(fw); 466845f3505SAntti Palosaari fw = NULL; 467845f3505SAntti Palosaari 468888680ffSAntti Palosaari memcpy(cmd.args, "\x01\x01", 2); 469845f3505SAntti Palosaari cmd.wlen = 2; 470845f3505SAntti Palosaari cmd.rlen = 1; 471845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 472845f3505SAntti Palosaari if (ret) 473845f3505SAntti Palosaari goto err; 474845f3505SAntti Palosaari 475845f3505SAntti Palosaari dev_info(&s->client->dev, "%s: found a '%s' in warm state\n", 476845f3505SAntti Palosaari KBUILD_MODNAME, si2168_ops.info.name); 477845f3505SAntti Palosaari 478845f3505SAntti Palosaari s->active = true; 479845f3505SAntti Palosaari 480845f3505SAntti Palosaari return 0; 481845f3505SAntti Palosaari err: 482845f3505SAntti Palosaari if (fw) 483845f3505SAntti Palosaari release_firmware(fw); 484845f3505SAntti Palosaari 485845f3505SAntti Palosaari dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret); 486845f3505SAntti Palosaari return ret; 487845f3505SAntti Palosaari } 488845f3505SAntti Palosaari 489845f3505SAntti Palosaari static int si2168_sleep(struct dvb_frontend *fe) 490845f3505SAntti Palosaari { 491845f3505SAntti Palosaari struct si2168 *s = fe->demodulator_priv; 4924de0ed7cSAntti Palosaari int ret; 4934de0ed7cSAntti Palosaari struct si2168_cmd cmd; 494845f3505SAntti Palosaari 495845f3505SAntti Palosaari dev_dbg(&s->client->dev, "%s:\n", __func__); 496845f3505SAntti Palosaari 497845f3505SAntti Palosaari s->active = false; 498845f3505SAntti Palosaari 4994de0ed7cSAntti Palosaari memcpy(cmd.args, "\x13", 1); 5004de0ed7cSAntti Palosaari cmd.wlen = 1; 5014de0ed7cSAntti Palosaari cmd.rlen = 0; 5024de0ed7cSAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 5034de0ed7cSAntti Palosaari if (ret) 5044de0ed7cSAntti Palosaari goto err; 5054de0ed7cSAntti Palosaari 506845f3505SAntti Palosaari return 0; 5074de0ed7cSAntti Palosaari err: 5084de0ed7cSAntti Palosaari dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret); 5094de0ed7cSAntti Palosaari return ret; 510845f3505SAntti Palosaari } 511845f3505SAntti Palosaari 512845f3505SAntti Palosaari static int si2168_get_tune_settings(struct dvb_frontend *fe, 513845f3505SAntti Palosaari struct dvb_frontend_tune_settings *s) 514845f3505SAntti Palosaari { 515845f3505SAntti Palosaari s->min_delay_ms = 900; 516845f3505SAntti Palosaari 517845f3505SAntti Palosaari return 0; 518845f3505SAntti Palosaari } 519845f3505SAntti Palosaari 520845f3505SAntti Palosaari /* 521845f3505SAntti Palosaari * I2C gate logic 522845f3505SAntti Palosaari * We must use unlocked i2c_transfer() here because I2C lock is already taken 523845f3505SAntti Palosaari * by tuner driver. 524845f3505SAntti Palosaari */ 525845f3505SAntti Palosaari static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan) 526845f3505SAntti Palosaari { 527845f3505SAntti Palosaari struct si2168 *s = mux_priv; 528845f3505SAntti Palosaari int ret; 529845f3505SAntti Palosaari struct i2c_msg gate_open_msg = { 530845f3505SAntti Palosaari .addr = s->client->addr, 531845f3505SAntti Palosaari .flags = 0, 532845f3505SAntti Palosaari .len = 3, 533845f3505SAntti Palosaari .buf = "\xc0\x0d\x01", 534845f3505SAntti Palosaari }; 535845f3505SAntti Palosaari 536845f3505SAntti Palosaari mutex_lock(&s->i2c_mutex); 537845f3505SAntti Palosaari 538845f3505SAntti Palosaari /* open tuner I2C gate */ 539845f3505SAntti Palosaari ret = __i2c_transfer(s->client->adapter, &gate_open_msg, 1); 540845f3505SAntti Palosaari if (ret != 1) { 541845f3505SAntti Palosaari dev_warn(&s->client->dev, "%s: i2c write failed=%d\n", 542845f3505SAntti Palosaari KBUILD_MODNAME, ret); 543845f3505SAntti Palosaari if (ret >= 0) 544845f3505SAntti Palosaari ret = -EREMOTEIO; 545845f3505SAntti Palosaari } else { 546845f3505SAntti Palosaari ret = 0; 547845f3505SAntti Palosaari } 548845f3505SAntti Palosaari 549845f3505SAntti Palosaari return ret; 550845f3505SAntti Palosaari } 551845f3505SAntti Palosaari 552845f3505SAntti Palosaari static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan) 553845f3505SAntti Palosaari { 554845f3505SAntti Palosaari struct si2168 *s = mux_priv; 555845f3505SAntti Palosaari int ret; 556845f3505SAntti Palosaari struct i2c_msg gate_close_msg = { 557845f3505SAntti Palosaari .addr = s->client->addr, 558845f3505SAntti Palosaari .flags = 0, 559845f3505SAntti Palosaari .len = 3, 560845f3505SAntti Palosaari .buf = "\xc0\x0d\x00", 561845f3505SAntti Palosaari }; 562845f3505SAntti Palosaari 563845f3505SAntti Palosaari /* close tuner I2C gate */ 564845f3505SAntti Palosaari ret = __i2c_transfer(s->client->adapter, &gate_close_msg, 1); 565845f3505SAntti Palosaari if (ret != 1) { 566845f3505SAntti Palosaari dev_warn(&s->client->dev, "%s: i2c write failed=%d\n", 567845f3505SAntti Palosaari KBUILD_MODNAME, ret); 568845f3505SAntti Palosaari if (ret >= 0) 569845f3505SAntti Palosaari ret = -EREMOTEIO; 570845f3505SAntti Palosaari } else { 571845f3505SAntti Palosaari ret = 0; 572845f3505SAntti Palosaari } 573845f3505SAntti Palosaari 574845f3505SAntti Palosaari mutex_unlock(&s->i2c_mutex); 575845f3505SAntti Palosaari 576845f3505SAntti Palosaari return ret; 577845f3505SAntti Palosaari } 578845f3505SAntti Palosaari 579845f3505SAntti Palosaari static const struct dvb_frontend_ops si2168_ops = { 580c790885bSAntti Palosaari .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 581845f3505SAntti Palosaari .info = { 582845f3505SAntti Palosaari .name = "Silicon Labs Si2168", 583845f3505SAntti Palosaari .caps = FE_CAN_FEC_1_2 | 584845f3505SAntti Palosaari FE_CAN_FEC_2_3 | 585845f3505SAntti Palosaari FE_CAN_FEC_3_4 | 586845f3505SAntti Palosaari FE_CAN_FEC_5_6 | 587845f3505SAntti Palosaari FE_CAN_FEC_7_8 | 588845f3505SAntti Palosaari FE_CAN_FEC_AUTO | 589845f3505SAntti Palosaari FE_CAN_QPSK | 590845f3505SAntti Palosaari FE_CAN_QAM_16 | 591845f3505SAntti Palosaari FE_CAN_QAM_32 | 592845f3505SAntti Palosaari FE_CAN_QAM_64 | 593845f3505SAntti Palosaari FE_CAN_QAM_128 | 594845f3505SAntti Palosaari FE_CAN_QAM_256 | 595845f3505SAntti Palosaari FE_CAN_QAM_AUTO | 596845f3505SAntti Palosaari FE_CAN_TRANSMISSION_MODE_AUTO | 597845f3505SAntti Palosaari FE_CAN_GUARD_INTERVAL_AUTO | 598845f3505SAntti Palosaari FE_CAN_HIERARCHY_AUTO | 599845f3505SAntti Palosaari FE_CAN_MUTE_TS | 600845f3505SAntti Palosaari FE_CAN_2G_MODULATION 601845f3505SAntti Palosaari }, 602845f3505SAntti Palosaari 603845f3505SAntti Palosaari .get_tune_settings = si2168_get_tune_settings, 604845f3505SAntti Palosaari 605845f3505SAntti Palosaari .init = si2168_init, 606845f3505SAntti Palosaari .sleep = si2168_sleep, 607845f3505SAntti Palosaari 608845f3505SAntti Palosaari .set_frontend = si2168_set_frontend, 609845f3505SAntti Palosaari 610845f3505SAntti Palosaari .read_status = si2168_read_status, 611845f3505SAntti Palosaari }; 612845f3505SAntti Palosaari 613845f3505SAntti Palosaari static int si2168_probe(struct i2c_client *client, 614845f3505SAntti Palosaari const struct i2c_device_id *id) 615845f3505SAntti Palosaari { 616845f3505SAntti Palosaari struct si2168_config *config = client->dev.platform_data; 617845f3505SAntti Palosaari struct si2168 *s; 618845f3505SAntti Palosaari int ret; 619845f3505SAntti Palosaari struct si2168_cmd cmd; 620845f3505SAntti Palosaari 621845f3505SAntti Palosaari dev_dbg(&client->dev, "%s:\n", __func__); 622845f3505SAntti Palosaari 623845f3505SAntti Palosaari s = kzalloc(sizeof(struct si2168), GFP_KERNEL); 624845f3505SAntti Palosaari if (!s) { 625845f3505SAntti Palosaari ret = -ENOMEM; 626845f3505SAntti Palosaari dev_err(&client->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME); 627845f3505SAntti Palosaari goto err; 628845f3505SAntti Palosaari } 629845f3505SAntti Palosaari 630845f3505SAntti Palosaari s->client = client; 631845f3505SAntti Palosaari mutex_init(&s->i2c_mutex); 632845f3505SAntti Palosaari 633845f3505SAntti Palosaari /* check if the demod is there */ 634845f3505SAntti Palosaari cmd.wlen = 0; 635845f3505SAntti Palosaari cmd.rlen = 1; 636845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 637845f3505SAntti Palosaari if (ret) 638845f3505SAntti Palosaari goto err; 639845f3505SAntti Palosaari 640845f3505SAntti Palosaari /* create mux i2c adapter for tuner */ 641845f3505SAntti Palosaari s->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, s, 642845f3505SAntti Palosaari 0, 0, 0, si2168_select, si2168_deselect); 6434d6efc7aSLuis Alves if (s->adapter == NULL) { 6444d6efc7aSLuis Alves ret = -ENODEV; 645845f3505SAntti Palosaari goto err; 6464d6efc7aSLuis Alves } 647845f3505SAntti Palosaari 648845f3505SAntti Palosaari /* create dvb_frontend */ 649845f3505SAntti Palosaari memcpy(&s->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); 650845f3505SAntti Palosaari s->fe.demodulator_priv = s; 651845f3505SAntti Palosaari 652845f3505SAntti Palosaari *config->i2c_adapter = s->adapter; 653845f3505SAntti Palosaari *config->fe = &s->fe; 654845f3505SAntti Palosaari 655845f3505SAntti Palosaari i2c_set_clientdata(client, s); 656845f3505SAntti Palosaari 657845f3505SAntti Palosaari dev_info(&s->client->dev, 658845f3505SAntti Palosaari "%s: Silicon Labs Si2168 successfully attached\n", 659845f3505SAntti Palosaari KBUILD_MODNAME); 660845f3505SAntti Palosaari return 0; 661845f3505SAntti Palosaari err: 662845f3505SAntti Palosaari kfree(s); 663845f3505SAntti Palosaari dev_dbg(&client->dev, "%s: failed=%d\n", __func__, ret); 664845f3505SAntti Palosaari return ret; 665845f3505SAntti Palosaari } 666845f3505SAntti Palosaari 667845f3505SAntti Palosaari static int si2168_remove(struct i2c_client *client) 668845f3505SAntti Palosaari { 669845f3505SAntti Palosaari struct si2168 *s = i2c_get_clientdata(client); 670845f3505SAntti Palosaari 671845f3505SAntti Palosaari dev_dbg(&client->dev, "%s:\n", __func__); 672845f3505SAntti Palosaari 673845f3505SAntti Palosaari i2c_del_mux_adapter(s->adapter); 674845f3505SAntti Palosaari 675845f3505SAntti Palosaari s->fe.ops.release = NULL; 676845f3505SAntti Palosaari s->fe.demodulator_priv = NULL; 677845f3505SAntti Palosaari 678845f3505SAntti Palosaari kfree(s); 679845f3505SAntti Palosaari 680845f3505SAntti Palosaari return 0; 681845f3505SAntti Palosaari } 682845f3505SAntti Palosaari 683845f3505SAntti Palosaari static const struct i2c_device_id si2168_id[] = { 684845f3505SAntti Palosaari {"si2168", 0}, 685845f3505SAntti Palosaari {} 686845f3505SAntti Palosaari }; 687845f3505SAntti Palosaari MODULE_DEVICE_TABLE(i2c, si2168_id); 688845f3505SAntti Palosaari 689845f3505SAntti Palosaari static struct i2c_driver si2168_driver = { 690845f3505SAntti Palosaari .driver = { 691845f3505SAntti Palosaari .owner = THIS_MODULE, 692845f3505SAntti Palosaari .name = "si2168", 693845f3505SAntti Palosaari }, 694845f3505SAntti Palosaari .probe = si2168_probe, 695845f3505SAntti Palosaari .remove = si2168_remove, 696845f3505SAntti Palosaari .id_table = si2168_id, 697845f3505SAntti Palosaari }; 698845f3505SAntti Palosaari 699845f3505SAntti Palosaari module_i2c_driver(si2168_driver); 700845f3505SAntti Palosaari 701845f3505SAntti Palosaari MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 702845f3505SAntti Palosaari MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); 703845f3505SAntti Palosaari MODULE_LICENSE("GPL"); 704668aa63cSAntti Palosaari MODULE_FIRMWARE(SI2168_A30_FIRMWARE); 705c9cb0820SOlli Salonen MODULE_FIRMWARE(SI2168_B40_FIRMWARE); 706