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 5837b4e43dSOlli Salonen dev_dbg(&s->client->dev, "cmd execution took %d ms\n", 59845f3505SAntti Palosaari jiffies_to_msecs(jiffies) - 60845f3505SAntti Palosaari (jiffies_to_msecs(timeout) - TIMEOUT)); 61845f3505SAntti Palosaari 62eefae30aSAntti Palosaari if (!((cmd->args[0] >> 7) & 0x01)) { 63845f3505SAntti Palosaari ret = -ETIMEDOUT; 64845f3505SAntti Palosaari goto err_mutex_unlock; 65845f3505SAntti Palosaari } 66845f3505SAntti Palosaari } 67845f3505SAntti Palosaari 68845f3505SAntti Palosaari ret = 0; 69845f3505SAntti Palosaari 70845f3505SAntti Palosaari err_mutex_unlock: 71845f3505SAntti Palosaari mutex_unlock(&s->i2c_mutex); 72845f3505SAntti Palosaari if (ret) 73845f3505SAntti Palosaari goto err; 74845f3505SAntti Palosaari 75845f3505SAntti Palosaari return 0; 76845f3505SAntti Palosaari err: 7737b4e43dSOlli Salonen dev_dbg(&s->client->dev, "failed=%d\n", ret); 78845f3505SAntti Palosaari return ret; 79845f3505SAntti Palosaari } 80845f3505SAntti Palosaari 81845f3505SAntti Palosaari static int si2168_read_status(struct dvb_frontend *fe, fe_status_t *status) 82845f3505SAntti Palosaari { 83845f3505SAntti Palosaari struct si2168 *s = fe->demodulator_priv; 84bffab93cSAntti Palosaari struct dtv_frontend_properties *c = &fe->dtv_property_cache; 85845f3505SAntti Palosaari int ret; 86845f3505SAntti Palosaari struct si2168_cmd cmd; 87845f3505SAntti Palosaari 88845f3505SAntti Palosaari *status = 0; 89845f3505SAntti Palosaari 90845f3505SAntti Palosaari if (!s->active) { 91845f3505SAntti Palosaari ret = -EAGAIN; 92845f3505SAntti Palosaari goto err; 93845f3505SAntti Palosaari } 94845f3505SAntti Palosaari 95bffab93cSAntti Palosaari switch (c->delivery_system) { 96bffab93cSAntti Palosaari case SYS_DVBT: 97888680ffSAntti Palosaari memcpy(cmd.args, "\xa0\x01", 2); 98845f3505SAntti Palosaari cmd.wlen = 2; 99845f3505SAntti Palosaari cmd.rlen = 13; 100bffab93cSAntti Palosaari break; 101c790885bSAntti Palosaari case SYS_DVBC_ANNEX_A: 102888680ffSAntti Palosaari memcpy(cmd.args, "\x90\x01", 2); 103c790885bSAntti Palosaari cmd.wlen = 2; 104c790885bSAntti Palosaari cmd.rlen = 9; 105c790885bSAntti Palosaari break; 106bffab93cSAntti Palosaari case SYS_DVBT2: 107888680ffSAntti Palosaari memcpy(cmd.args, "\x50\x01", 2); 108bffab93cSAntti Palosaari cmd.wlen = 2; 109bffab93cSAntti Palosaari cmd.rlen = 14; 110bffab93cSAntti Palosaari break; 111bffab93cSAntti Palosaari default: 112bffab93cSAntti Palosaari ret = -EINVAL; 113bffab93cSAntti Palosaari goto err; 114bffab93cSAntti Palosaari } 115bffab93cSAntti Palosaari 116845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 117845f3505SAntti Palosaari if (ret) 118845f3505SAntti Palosaari goto err; 119845f3505SAntti Palosaari 120845f3505SAntti Palosaari /* 121845f3505SAntti Palosaari * Possible values seen, in order from strong signal to weak: 122845f3505SAntti Palosaari * 16 0001 0110 full lock 123845f3505SAntti Palosaari * 1e 0001 1110 partial lock 124845f3505SAntti Palosaari * 1a 0001 1010 partial lock 125845f3505SAntti Palosaari * 18 0001 1000 no lock 126845f3505SAntti Palosaari * 127845f3505SAntti Palosaari * [b3:b1] lock bits 128845f3505SAntti Palosaari * [b4] statistics ready? Set in a few secs after lock is gained. 129845f3505SAntti Palosaari */ 130845f3505SAntti Palosaari 131722a042dSAntti Palosaari switch ((cmd.args[2] >> 1) & 0x03) { 132722a042dSAntti Palosaari case 0x01: 133845f3505SAntti Palosaari *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; 134845f3505SAntti Palosaari break; 135722a042dSAntti Palosaari case 0x03: 136845f3505SAntti Palosaari *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | 137845f3505SAntti Palosaari FE_HAS_SYNC | FE_HAS_LOCK; 138845f3505SAntti Palosaari break; 139845f3505SAntti Palosaari } 140845f3505SAntti Palosaari 141845f3505SAntti Palosaari s->fe_status = *status; 142845f3505SAntti Palosaari 14388ac8f86SAntti Palosaari if (*status & FE_HAS_LOCK) { 14488ac8f86SAntti Palosaari c->cnr.len = 1; 14588ac8f86SAntti Palosaari c->cnr.stat[0].scale = FE_SCALE_DECIBEL; 14688ac8f86SAntti Palosaari c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4; 14788ac8f86SAntti Palosaari } else { 14888ac8f86SAntti Palosaari c->cnr.len = 1; 14988ac8f86SAntti Palosaari c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; 15088ac8f86SAntti Palosaari } 15188ac8f86SAntti Palosaari 15237b4e43dSOlli Salonen dev_dbg(&s->client->dev, "status=%02x args=%*ph\n", 15337b4e43dSOlli Salonen *status, cmd.rlen, cmd.args); 154845f3505SAntti Palosaari 155845f3505SAntti Palosaari return 0; 156845f3505SAntti Palosaari err: 15737b4e43dSOlli Salonen dev_dbg(&s->client->dev, "failed=%d\n", ret); 158845f3505SAntti Palosaari return ret; 159845f3505SAntti Palosaari } 160845f3505SAntti Palosaari 161845f3505SAntti Palosaari static int si2168_set_frontend(struct dvb_frontend *fe) 162845f3505SAntti Palosaari { 163845f3505SAntti Palosaari struct si2168 *s = fe->demodulator_priv; 164845f3505SAntti Palosaari struct dtv_frontend_properties *c = &fe->dtv_property_cache; 165845f3505SAntti Palosaari int ret; 166845f3505SAntti Palosaari struct si2168_cmd cmd; 167bffab93cSAntti Palosaari u8 bandwidth, delivery_system; 168845f3505SAntti Palosaari 169845f3505SAntti Palosaari dev_dbg(&s->client->dev, 170e395e573SCrazyCat "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u, stream_id=%d\n", 17137b4e43dSOlli Salonen c->delivery_system, c->modulation, 172845f3505SAntti Palosaari c->frequency, c->bandwidth_hz, c->symbol_rate, 173e395e573SCrazyCat c->inversion, c->stream_id); 174845f3505SAntti Palosaari 175845f3505SAntti Palosaari if (!s->active) { 176845f3505SAntti Palosaari ret = -EAGAIN; 177845f3505SAntti Palosaari goto err; 178845f3505SAntti Palosaari } 179845f3505SAntti Palosaari 180bffab93cSAntti Palosaari switch (c->delivery_system) { 181bffab93cSAntti Palosaari case SYS_DVBT: 182bffab93cSAntti Palosaari delivery_system = 0x20; 183bffab93cSAntti Palosaari break; 184c790885bSAntti Palosaari case SYS_DVBC_ANNEX_A: 185c790885bSAntti Palosaari delivery_system = 0x30; 186c790885bSAntti Palosaari break; 187bffab93cSAntti Palosaari case SYS_DVBT2: 188bffab93cSAntti Palosaari delivery_system = 0x70; 189bffab93cSAntti Palosaari break; 190bffab93cSAntti Palosaari default: 191bffab93cSAntti Palosaari ret = -EINVAL; 192bffab93cSAntti Palosaari goto err; 193bffab93cSAntti Palosaari } 194bffab93cSAntti Palosaari 195c790885bSAntti Palosaari if (c->bandwidth_hz <= 5000000) 196bffab93cSAntti Palosaari bandwidth = 0x05; 197c790885bSAntti Palosaari else if (c->bandwidth_hz <= 6000000) 198bffab93cSAntti Palosaari bandwidth = 0x06; 199c790885bSAntti Palosaari else if (c->bandwidth_hz <= 7000000) 200bffab93cSAntti Palosaari bandwidth = 0x07; 201c790885bSAntti Palosaari else if (c->bandwidth_hz <= 8000000) 202bffab93cSAntti Palosaari bandwidth = 0x08; 203c790885bSAntti Palosaari else if (c->bandwidth_hz <= 9000000) 204c790885bSAntti Palosaari bandwidth = 0x09; 205c790885bSAntti Palosaari else if (c->bandwidth_hz <= 10000000) 206c790885bSAntti Palosaari bandwidth = 0x0a; 207c790885bSAntti Palosaari else 208c790885bSAntti Palosaari bandwidth = 0x0f; 209845f3505SAntti Palosaari 210845f3505SAntti Palosaari /* program tuner */ 211845f3505SAntti Palosaari if (fe->ops.tuner_ops.set_params) { 212845f3505SAntti Palosaari ret = fe->ops.tuner_ops.set_params(fe); 213845f3505SAntti Palosaari if (ret) 214845f3505SAntti Palosaari goto err; 215845f3505SAntti Palosaari } 216845f3505SAntti Palosaari 217845f3505SAntti Palosaari memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5); 218845f3505SAntti Palosaari cmd.wlen = 5; 219845f3505SAntti Palosaari cmd.rlen = 5; 220845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 221845f3505SAntti Palosaari if (ret) 222845f3505SAntti Palosaari goto err; 223845f3505SAntti Palosaari 224bffab93cSAntti Palosaari /* that has no big effect */ 225bffab93cSAntti Palosaari if (c->delivery_system == SYS_DVBT) 226845f3505SAntti Palosaari memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6); 227c790885bSAntti Palosaari else if (c->delivery_system == SYS_DVBC_ANNEX_A) 228c790885bSAntti Palosaari memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6); 229bffab93cSAntti Palosaari else if (c->delivery_system == SYS_DVBT2) 230bffab93cSAntti Palosaari memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6); 231845f3505SAntti Palosaari cmd.wlen = 6; 232845f3505SAntti Palosaari cmd.rlen = 3; 233845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 234845f3505SAntti Palosaari if (ret) 235845f3505SAntti Palosaari goto err; 236845f3505SAntti Palosaari 237e395e573SCrazyCat if (c->delivery_system == SYS_DVBT2) { 238e395e573SCrazyCat /* select PLP */ 239e395e573SCrazyCat cmd.args[0] = 0x52; 240e395e573SCrazyCat cmd.args[1] = c->stream_id & 0xff; 241e395e573SCrazyCat cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1; 242e395e573SCrazyCat cmd.wlen = 3; 243e395e573SCrazyCat cmd.rlen = 1; 244e395e573SCrazyCat ret = si2168_cmd_execute(s, &cmd); 245e395e573SCrazyCat if (ret) 246e395e573SCrazyCat goto err; 247e395e573SCrazyCat } 248e395e573SCrazyCat 249845f3505SAntti Palosaari memcpy(cmd.args, "\x51\x03", 2); 250845f3505SAntti Palosaari cmd.wlen = 2; 251845f3505SAntti Palosaari cmd.rlen = 12; 252845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 253845f3505SAntti Palosaari if (ret) 254845f3505SAntti Palosaari goto err; 255845f3505SAntti Palosaari 256845f3505SAntti Palosaari memcpy(cmd.args, "\x12\x08\x04", 3); 257845f3505SAntti Palosaari cmd.wlen = 3; 258845f3505SAntti Palosaari cmd.rlen = 3; 259845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 260845f3505SAntti Palosaari if (ret) 261845f3505SAntti Palosaari goto err; 262845f3505SAntti Palosaari 263845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6); 264845f3505SAntti Palosaari cmd.wlen = 6; 2651d518c27SAntti Palosaari cmd.rlen = 4; 266845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 267845f3505SAntti Palosaari if (ret) 268845f3505SAntti Palosaari goto err; 269845f3505SAntti Palosaari 270845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6); 271845f3505SAntti Palosaari cmd.wlen = 6; 2721d518c27SAntti Palosaari cmd.rlen = 4; 273845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 274845f3505SAntti Palosaari if (ret) 275845f3505SAntti Palosaari goto err; 276845f3505SAntti Palosaari 277845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6); 278845f3505SAntti Palosaari cmd.wlen = 6; 2791d518c27SAntti Palosaari cmd.rlen = 4; 280845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 281845f3505SAntti Palosaari if (ret) 282845f3505SAntti Palosaari goto err; 283845f3505SAntti Palosaari 284845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6); 285bffab93cSAntti Palosaari cmd.args[4] = delivery_system | bandwidth; 286845f3505SAntti Palosaari cmd.wlen = 6; 2871d518c27SAntti Palosaari cmd.rlen = 4; 288845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 289845f3505SAntti Palosaari if (ret) 290845f3505SAntti Palosaari goto err; 291845f3505SAntti Palosaari 29232bf8818SLuis Alves /* set DVB-C symbol rate */ 29332bf8818SLuis Alves if (c->delivery_system == SYS_DVBC_ANNEX_A) { 29432bf8818SLuis Alves memcpy(cmd.args, "\x14\x00\x02\x11", 4); 29532bf8818SLuis Alves cmd.args[4] = (c->symbol_rate / 1000) & 0xff; 29632bf8818SLuis Alves cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; 29732bf8818SLuis Alves cmd.wlen = 6; 29832bf8818SLuis Alves cmd.rlen = 4; 29932bf8818SLuis Alves ret = si2168_cmd_execute(s, &cmd); 30032bf8818SLuis Alves if (ret) 30132bf8818SLuis Alves goto err; 30232bf8818SLuis Alves } 30332bf8818SLuis Alves 304845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6); 305845f3505SAntti Palosaari cmd.wlen = 6; 3061d518c27SAntti Palosaari cmd.rlen = 4; 307845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 308845f3505SAntti Palosaari if (ret) 309845f3505SAntti Palosaari goto err; 310845f3505SAntti Palosaari 311845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x18", 6); 312845f3505SAntti Palosaari cmd.wlen = 6; 3131d518c27SAntti Palosaari cmd.rlen = 4; 314845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 315845f3505SAntti Palosaari if (ret) 316845f3505SAntti Palosaari goto err; 317845f3505SAntti Palosaari 318845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x15", 6); 319845f3505SAntti Palosaari cmd.wlen = 6; 3201d518c27SAntti Palosaari cmd.rlen = 4; 321845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 322845f3505SAntti Palosaari if (ret) 323845f3505SAntti Palosaari goto err; 324845f3505SAntti Palosaari 325845f3505SAntti Palosaari memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); 326845f3505SAntti Palosaari cmd.wlen = 6; 3271d518c27SAntti Palosaari cmd.rlen = 4; 328845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 329845f3505SAntti Palosaari if (ret) 330845f3505SAntti Palosaari goto err; 331845f3505SAntti Palosaari 33243911776SOlli Salonen memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6); 33343911776SOlli Salonen cmd.wlen = 6; 33443911776SOlli Salonen cmd.rlen = 4; 33543911776SOlli Salonen ret = si2168_cmd_execute(s, &cmd); 33643911776SOlli Salonen if (ret) 33743911776SOlli Salonen goto err; 33843911776SOlli Salonen 339888680ffSAntti Palosaari memcpy(cmd.args, "\x85", 1); 340845f3505SAntti Palosaari cmd.wlen = 1; 341845f3505SAntti Palosaari cmd.rlen = 1; 342845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 343845f3505SAntti Palosaari if (ret) 344845f3505SAntti Palosaari goto err; 345845f3505SAntti Palosaari 346845f3505SAntti Palosaari s->delivery_system = c->delivery_system; 347845f3505SAntti Palosaari 348845f3505SAntti Palosaari return 0; 349845f3505SAntti Palosaari err: 35037b4e43dSOlli Salonen dev_dbg(&s->client->dev, "failed=%d\n", ret); 351845f3505SAntti Palosaari return ret; 352845f3505SAntti Palosaari } 353845f3505SAntti Palosaari 354845f3505SAntti Palosaari static int si2168_init(struct dvb_frontend *fe) 355845f3505SAntti Palosaari { 356845f3505SAntti Palosaari struct si2168 *s = fe->demodulator_priv; 357845f3505SAntti Palosaari int ret, len, remaining; 358845f3505SAntti Palosaari const struct firmware *fw = NULL; 359c9cb0820SOlli Salonen u8 *fw_file; 360845f3505SAntti Palosaari const unsigned int i2c_wr_max = 8; 361845f3505SAntti Palosaari struct si2168_cmd cmd; 362b6b6fd6fSAntti Palosaari unsigned int chip_id; 363845f3505SAntti Palosaari 36437b4e43dSOlli Salonen dev_dbg(&s->client->dev, "\n"); 365845f3505SAntti Palosaari 366888680ffSAntti Palosaari memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); 367845f3505SAntti Palosaari cmd.wlen = 13; 368845f3505SAntti Palosaari cmd.rlen = 0; 369845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 370845f3505SAntti Palosaari if (ret) 371845f3505SAntti Palosaari goto err; 372845f3505SAntti Palosaari 373888680ffSAntti Palosaari memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); 374845f3505SAntti Palosaari cmd.wlen = 8; 375845f3505SAntti Palosaari cmd.rlen = 1; 376845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 377845f3505SAntti Palosaari if (ret) 378845f3505SAntti Palosaari goto err; 379845f3505SAntti Palosaari 380c9cb0820SOlli Salonen /* query chip revision */ 381888680ffSAntti Palosaari memcpy(cmd.args, "\x02", 1); 382845f3505SAntti Palosaari cmd.wlen = 1; 383845f3505SAntti Palosaari cmd.rlen = 13; 384845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 385845f3505SAntti Palosaari if (ret) 386845f3505SAntti Palosaari goto err; 387845f3505SAntti Palosaari 388b6b6fd6fSAntti Palosaari chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 | 389b6b6fd6fSAntti Palosaari cmd.args[4] << 0; 390b6b6fd6fSAntti Palosaari 391635a90cfSLuis Alves #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0) 392b6b6fd6fSAntti Palosaari #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0) 393b6b6fd6fSAntti Palosaari #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0) 394b6b6fd6fSAntti Palosaari 395b6b6fd6fSAntti Palosaari switch (chip_id) { 396635a90cfSLuis Alves case SI2168_A20: 397635a90cfSLuis Alves fw_file = SI2168_A20_FIRMWARE; 398635a90cfSLuis Alves break; 399b6b6fd6fSAntti Palosaari case SI2168_A30: 400c9cb0820SOlli Salonen fw_file = SI2168_A30_FIRMWARE; 401b6b6fd6fSAntti Palosaari break; 402b6b6fd6fSAntti Palosaari case SI2168_B40: 403b6b6fd6fSAntti Palosaari fw_file = SI2168_B40_FIRMWARE; 404b6b6fd6fSAntti Palosaari break; 405b6b6fd6fSAntti Palosaari default: 406c9cb0820SOlli Salonen dev_err(&s->client->dev, 40737b4e43dSOlli Salonen "unknown chip version Si21%d-%c%c%c\n", 40837b4e43dSOlli Salonen cmd.args[2], cmd.args[1], 409b6b6fd6fSAntti Palosaari cmd.args[3], cmd.args[4]); 410c9cb0820SOlli Salonen ret = -EINVAL; 411c9cb0820SOlli Salonen goto err; 412c9cb0820SOlli Salonen } 413c9cb0820SOlli Salonen 414845f3505SAntti Palosaari /* cold state - try to download firmware */ 41537b4e43dSOlli Salonen dev_info(&s->client->dev, "found a '%s' in cold state\n", 41637b4e43dSOlli Salonen si2168_ops.info.name); 417845f3505SAntti Palosaari 418845f3505SAntti Palosaari /* request the firmware, this will block and timeout */ 419845f3505SAntti Palosaari ret = request_firmware(&fw, fw_file, &s->client->dev); 420845f3505SAntti Palosaari if (ret) { 421b6b6fd6fSAntti Palosaari /* fallback mechanism to handle old name for Si2168 B40 fw */ 422b6b6fd6fSAntti Palosaari if (chip_id == SI2168_B40) { 423c9cb0820SOlli Salonen fw_file = SI2168_B40_FIRMWARE_FALLBACK; 424c9cb0820SOlli Salonen ret = request_firmware(&fw, fw_file, &s->client->dev); 425c9cb0820SOlli Salonen } 426b6b6fd6fSAntti Palosaari 427b6b6fd6fSAntti Palosaari if (ret == 0) { 428b6b6fd6fSAntti Palosaari dev_notice(&s->client->dev, 42937b4e43dSOlli Salonen "please install firmware file '%s'\n", 43037b4e43dSOlli Salonen SI2168_B40_FIRMWARE); 431b6b6fd6fSAntti Palosaari } else { 432b6b6fd6fSAntti Palosaari dev_err(&s->client->dev, 43337b4e43dSOlli Salonen "firmware file '%s' not found\n", 43437b4e43dSOlli Salonen fw_file); 435845f3505SAntti Palosaari goto err; 436845f3505SAntti Palosaari } 437c9cb0820SOlli Salonen } 438845f3505SAntti Palosaari 43937b4e43dSOlli Salonen dev_info(&s->client->dev, "downloading firmware from file '%s'\n", 44037b4e43dSOlli Salonen fw_file); 441845f3505SAntti Palosaari 442845f3505SAntti Palosaari for (remaining = fw->size; remaining > 0; remaining -= i2c_wr_max) { 443845f3505SAntti Palosaari len = remaining; 444845f3505SAntti Palosaari if (len > i2c_wr_max) 445845f3505SAntti Palosaari len = i2c_wr_max; 446845f3505SAntti Palosaari 447845f3505SAntti Palosaari memcpy(cmd.args, &fw->data[fw->size - remaining], len); 448845f3505SAntti Palosaari cmd.wlen = len; 449845f3505SAntti Palosaari cmd.rlen = 1; 450845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 451845f3505SAntti Palosaari if (ret) { 452845f3505SAntti Palosaari dev_err(&s->client->dev, 45337b4e43dSOlli Salonen "firmware download failed=%d\n", 45437b4e43dSOlli Salonen ret); 455845f3505SAntti Palosaari goto err; 456845f3505SAntti Palosaari } 457845f3505SAntti Palosaari } 458845f3505SAntti Palosaari 459845f3505SAntti Palosaari release_firmware(fw); 460845f3505SAntti Palosaari fw = NULL; 461845f3505SAntti Palosaari 462888680ffSAntti Palosaari memcpy(cmd.args, "\x01\x01", 2); 463845f3505SAntti Palosaari cmd.wlen = 2; 464845f3505SAntti Palosaari cmd.rlen = 1; 465845f3505SAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 466845f3505SAntti Palosaari if (ret) 467845f3505SAntti Palosaari goto err; 468845f3505SAntti Palosaari 46937b4e43dSOlli Salonen dev_info(&s->client->dev, "found a '%s' in warm state\n", 47037b4e43dSOlli Salonen si2168_ops.info.name); 471845f3505SAntti Palosaari 472389ce398SOlli Salonen /* set ts mode */ 473389ce398SOlli Salonen memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6); 474389ce398SOlli Salonen cmd.args[4] |= s->ts_mode; 475389ce398SOlli Salonen cmd.wlen = 6; 476389ce398SOlli Salonen cmd.rlen = 4; 477389ce398SOlli Salonen ret = si2168_cmd_execute(s, &cmd); 478389ce398SOlli Salonen if (ret) 479389ce398SOlli Salonen goto err; 480389ce398SOlli Salonen 481845f3505SAntti Palosaari s->active = true; 482845f3505SAntti Palosaari 483845f3505SAntti Palosaari return 0; 484845f3505SAntti Palosaari err: 485845f3505SAntti Palosaari if (fw) 486845f3505SAntti Palosaari release_firmware(fw); 487845f3505SAntti Palosaari 48837b4e43dSOlli Salonen dev_dbg(&s->client->dev, "failed=%d\n", ret); 489845f3505SAntti Palosaari return ret; 490845f3505SAntti Palosaari } 491845f3505SAntti Palosaari 492845f3505SAntti Palosaari static int si2168_sleep(struct dvb_frontend *fe) 493845f3505SAntti Palosaari { 494845f3505SAntti Palosaari struct si2168 *s = fe->demodulator_priv; 4954de0ed7cSAntti Palosaari int ret; 4964de0ed7cSAntti Palosaari struct si2168_cmd cmd; 497845f3505SAntti Palosaari 49837b4e43dSOlli Salonen dev_dbg(&s->client->dev, "\n"); 499845f3505SAntti Palosaari 500845f3505SAntti Palosaari s->active = false; 501845f3505SAntti Palosaari 5024de0ed7cSAntti Palosaari memcpy(cmd.args, "\x13", 1); 5034de0ed7cSAntti Palosaari cmd.wlen = 1; 5044de0ed7cSAntti Palosaari cmd.rlen = 0; 5054de0ed7cSAntti Palosaari ret = si2168_cmd_execute(s, &cmd); 5064de0ed7cSAntti Palosaari if (ret) 5074de0ed7cSAntti Palosaari goto err; 5084de0ed7cSAntti Palosaari 509845f3505SAntti Palosaari return 0; 5104de0ed7cSAntti Palosaari err: 51137b4e43dSOlli Salonen dev_dbg(&s->client->dev, "failed=%d\n", ret); 5124de0ed7cSAntti Palosaari return ret; 513845f3505SAntti Palosaari } 514845f3505SAntti Palosaari 515845f3505SAntti Palosaari static int si2168_get_tune_settings(struct dvb_frontend *fe, 516845f3505SAntti Palosaari struct dvb_frontend_tune_settings *s) 517845f3505SAntti Palosaari { 518845f3505SAntti Palosaari s->min_delay_ms = 900; 519845f3505SAntti Palosaari 520845f3505SAntti Palosaari return 0; 521845f3505SAntti Palosaari } 522845f3505SAntti Palosaari 523845f3505SAntti Palosaari /* 524845f3505SAntti Palosaari * I2C gate logic 525845f3505SAntti Palosaari * We must use unlocked i2c_transfer() here because I2C lock is already taken 526845f3505SAntti Palosaari * by tuner driver. 527845f3505SAntti Palosaari */ 528845f3505SAntti Palosaari static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan) 529845f3505SAntti Palosaari { 530845f3505SAntti Palosaari struct si2168 *s = mux_priv; 531845f3505SAntti Palosaari int ret; 532845f3505SAntti Palosaari struct i2c_msg gate_open_msg = { 533845f3505SAntti Palosaari .addr = s->client->addr, 534845f3505SAntti Palosaari .flags = 0, 535845f3505SAntti Palosaari .len = 3, 536845f3505SAntti Palosaari .buf = "\xc0\x0d\x01", 537845f3505SAntti Palosaari }; 538845f3505SAntti Palosaari 539845f3505SAntti Palosaari mutex_lock(&s->i2c_mutex); 540845f3505SAntti Palosaari 541845f3505SAntti Palosaari /* open tuner I2C gate */ 542845f3505SAntti Palosaari ret = __i2c_transfer(s->client->adapter, &gate_open_msg, 1); 543845f3505SAntti Palosaari if (ret != 1) { 54437b4e43dSOlli Salonen dev_warn(&s->client->dev, "i2c write failed=%d\n", ret); 545845f3505SAntti Palosaari if (ret >= 0) 546845f3505SAntti Palosaari ret = -EREMOTEIO; 547845f3505SAntti Palosaari } else { 548845f3505SAntti Palosaari ret = 0; 549845f3505SAntti Palosaari } 550845f3505SAntti Palosaari 551845f3505SAntti Palosaari return ret; 552845f3505SAntti Palosaari } 553845f3505SAntti Palosaari 554845f3505SAntti Palosaari static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan) 555845f3505SAntti Palosaari { 556845f3505SAntti Palosaari struct si2168 *s = mux_priv; 557845f3505SAntti Palosaari int ret; 558845f3505SAntti Palosaari struct i2c_msg gate_close_msg = { 559845f3505SAntti Palosaari .addr = s->client->addr, 560845f3505SAntti Palosaari .flags = 0, 561845f3505SAntti Palosaari .len = 3, 562845f3505SAntti Palosaari .buf = "\xc0\x0d\x00", 563845f3505SAntti Palosaari }; 564845f3505SAntti Palosaari 565845f3505SAntti Palosaari /* close tuner I2C gate */ 566845f3505SAntti Palosaari ret = __i2c_transfer(s->client->adapter, &gate_close_msg, 1); 567845f3505SAntti Palosaari if (ret != 1) { 56837b4e43dSOlli Salonen dev_warn(&s->client->dev, "i2c write failed=%d\n", ret); 569845f3505SAntti Palosaari if (ret >= 0) 570845f3505SAntti Palosaari ret = -EREMOTEIO; 571845f3505SAntti Palosaari } else { 572845f3505SAntti Palosaari ret = 0; 573845f3505SAntti Palosaari } 574845f3505SAntti Palosaari 575845f3505SAntti Palosaari mutex_unlock(&s->i2c_mutex); 576845f3505SAntti Palosaari 577845f3505SAntti Palosaari return ret; 578845f3505SAntti Palosaari } 579845f3505SAntti Palosaari 580845f3505SAntti Palosaari static const struct dvb_frontend_ops si2168_ops = { 581c790885bSAntti Palosaari .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, 582845f3505SAntti Palosaari .info = { 583845f3505SAntti Palosaari .name = "Silicon Labs Si2168", 584845f3505SAntti Palosaari .caps = FE_CAN_FEC_1_2 | 585845f3505SAntti Palosaari FE_CAN_FEC_2_3 | 586845f3505SAntti Palosaari FE_CAN_FEC_3_4 | 587845f3505SAntti Palosaari FE_CAN_FEC_5_6 | 588845f3505SAntti Palosaari FE_CAN_FEC_7_8 | 589845f3505SAntti Palosaari FE_CAN_FEC_AUTO | 590845f3505SAntti Palosaari FE_CAN_QPSK | 591845f3505SAntti Palosaari FE_CAN_QAM_16 | 592845f3505SAntti Palosaari FE_CAN_QAM_32 | 593845f3505SAntti Palosaari FE_CAN_QAM_64 | 594845f3505SAntti Palosaari FE_CAN_QAM_128 | 595845f3505SAntti Palosaari FE_CAN_QAM_256 | 596845f3505SAntti Palosaari FE_CAN_QAM_AUTO | 597845f3505SAntti Palosaari FE_CAN_TRANSMISSION_MODE_AUTO | 598845f3505SAntti Palosaari FE_CAN_GUARD_INTERVAL_AUTO | 599845f3505SAntti Palosaari FE_CAN_HIERARCHY_AUTO | 600845f3505SAntti Palosaari FE_CAN_MUTE_TS | 601845f3505SAntti Palosaari FE_CAN_2G_MODULATION 602845f3505SAntti Palosaari }, 603845f3505SAntti Palosaari 604845f3505SAntti Palosaari .get_tune_settings = si2168_get_tune_settings, 605845f3505SAntti Palosaari 606845f3505SAntti Palosaari .init = si2168_init, 607845f3505SAntti Palosaari .sleep = si2168_sleep, 608845f3505SAntti Palosaari 609845f3505SAntti Palosaari .set_frontend = si2168_set_frontend, 610845f3505SAntti Palosaari 611845f3505SAntti Palosaari .read_status = si2168_read_status, 612845f3505SAntti Palosaari }; 613845f3505SAntti Palosaari 614845f3505SAntti Palosaari static int si2168_probe(struct i2c_client *client, 615845f3505SAntti Palosaari const struct i2c_device_id *id) 616845f3505SAntti Palosaari { 617845f3505SAntti Palosaari struct si2168_config *config = client->dev.platform_data; 618845f3505SAntti Palosaari struct si2168 *s; 619845f3505SAntti Palosaari int ret; 620845f3505SAntti Palosaari 62137b4e43dSOlli Salonen dev_dbg(&client->dev, "\n"); 622845f3505SAntti Palosaari 623845f3505SAntti Palosaari s = kzalloc(sizeof(struct si2168), GFP_KERNEL); 624845f3505SAntti Palosaari if (!s) { 625845f3505SAntti Palosaari ret = -ENOMEM; 62637b4e43dSOlli Salonen dev_err(&client->dev, "kzalloc() failed\n"); 627845f3505SAntti Palosaari goto err; 628845f3505SAntti Palosaari } 629845f3505SAntti Palosaari 630845f3505SAntti Palosaari s->client = client; 631845f3505SAntti Palosaari mutex_init(&s->i2c_mutex); 632845f3505SAntti Palosaari 633845f3505SAntti Palosaari /* create mux i2c adapter for tuner */ 634845f3505SAntti Palosaari s->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, s, 635845f3505SAntti Palosaari 0, 0, 0, si2168_select, si2168_deselect); 6364d6efc7aSLuis Alves if (s->adapter == NULL) { 6374d6efc7aSLuis Alves ret = -ENODEV; 638845f3505SAntti Palosaari goto err; 6394d6efc7aSLuis Alves } 640845f3505SAntti Palosaari 641845f3505SAntti Palosaari /* create dvb_frontend */ 642845f3505SAntti Palosaari memcpy(&s->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); 643845f3505SAntti Palosaari s->fe.demodulator_priv = s; 644845f3505SAntti Palosaari 645845f3505SAntti Palosaari *config->i2c_adapter = s->adapter; 646845f3505SAntti Palosaari *config->fe = &s->fe; 647389ce398SOlli Salonen s->ts_mode = config->ts_mode; 648845f3505SAntti Palosaari 649845f3505SAntti Palosaari i2c_set_clientdata(client, s); 650845f3505SAntti Palosaari 651845f3505SAntti Palosaari dev_info(&s->client->dev, 65237b4e43dSOlli Salonen "Silicon Labs Si2168 successfully attached\n"); 653845f3505SAntti Palosaari return 0; 654845f3505SAntti Palosaari err: 655845f3505SAntti Palosaari kfree(s); 65637b4e43dSOlli Salonen dev_dbg(&client->dev, "failed=%d\n", ret); 657845f3505SAntti Palosaari return ret; 658845f3505SAntti Palosaari } 659845f3505SAntti Palosaari 660845f3505SAntti Palosaari static int si2168_remove(struct i2c_client *client) 661845f3505SAntti Palosaari { 662845f3505SAntti Palosaari struct si2168 *s = i2c_get_clientdata(client); 663845f3505SAntti Palosaari 66437b4e43dSOlli Salonen dev_dbg(&client->dev, "\n"); 665845f3505SAntti Palosaari 666845f3505SAntti Palosaari i2c_del_mux_adapter(s->adapter); 667845f3505SAntti Palosaari 668845f3505SAntti Palosaari s->fe.ops.release = NULL; 669845f3505SAntti Palosaari s->fe.demodulator_priv = NULL; 670845f3505SAntti Palosaari 671845f3505SAntti Palosaari kfree(s); 672845f3505SAntti Palosaari 673845f3505SAntti Palosaari return 0; 674845f3505SAntti Palosaari } 675845f3505SAntti Palosaari 676845f3505SAntti Palosaari static const struct i2c_device_id si2168_id[] = { 677845f3505SAntti Palosaari {"si2168", 0}, 678845f3505SAntti Palosaari {} 679845f3505SAntti Palosaari }; 680845f3505SAntti Palosaari MODULE_DEVICE_TABLE(i2c, si2168_id); 681845f3505SAntti Palosaari 682845f3505SAntti Palosaari static struct i2c_driver si2168_driver = { 683845f3505SAntti Palosaari .driver = { 684845f3505SAntti Palosaari .owner = THIS_MODULE, 685845f3505SAntti Palosaari .name = "si2168", 686845f3505SAntti Palosaari }, 687845f3505SAntti Palosaari .probe = si2168_probe, 688845f3505SAntti Palosaari .remove = si2168_remove, 689845f3505SAntti Palosaari .id_table = si2168_id, 690845f3505SAntti Palosaari }; 691845f3505SAntti Palosaari 692845f3505SAntti Palosaari module_i2c_driver(si2168_driver); 693845f3505SAntti Palosaari 694845f3505SAntti Palosaari MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); 695845f3505SAntti Palosaari MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); 696845f3505SAntti Palosaari MODULE_LICENSE("GPL"); 697635a90cfSLuis Alves MODULE_FIRMWARE(SI2168_A20_FIRMWARE); 698668aa63cSAntti Palosaari MODULE_FIRMWARE(SI2168_A30_FIRMWARE); 699c9cb0820SOlli Salonen MODULE_FIRMWARE(SI2168_B40_FIRMWARE); 700