drivers/media/pci/pt3/pt3.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Earthsoft PT3 driver
   4  *
   5  * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com>
   6  */
   7
   8 #include <linux/freezer.h>
   9 #include <linux/kernel.h>
  10 #include <linux/kthread.h>
  11 #include <linux/mutex.h>
  12 #include <linux/module.h>
  13 #include <linux/pci.h>
  14 #include <linux/string.h>
  15 #include <linux/sched/signal.h>
  16
  17 #include <media/dmxdev.h>
  18 #include <media/dvbdev.h>
  19 #include <media/dvb_demux.h>
  20 #include <media/dvb_frontend.h>
  21
  22 #include "pt3.h"
  23
  24 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  25
  26 static bool one_adapter;
  27 module_param(one_adapter, bool, 0444);
  28 MODULE_PARM_DESC(one_adapter, "Place FE's together under one adapter.");
  29
  30 static int num_bufs = 4;
  31 module_param(num_bufs, int, 0444);
  32 MODULE_PARM_DESC(num_bufs, "Number of DMA buffer (188KiB) per FE.");
  33
  34
  35 static const struct i2c_algorithm pt3_i2c_algo = {
  36         .master_xfer   = &pt3_i2c_master_xfer,
  37         .functionality = &pt3_i2c_functionality,
  38 };
  39
  40 static const struct pt3_adap_config adap_conf[PT3_NUM_FE] = {
  41         {
  42                 .demod_info = {
  43                         I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x11),
  44                 },
  45                 .tuner_info = {
  46                         I2C_BOARD_INFO("qm1d1c0042", 0x63),
  47                 },
  48                 .tuner_cfg.qm1d1c0042 = {
  49                         .lpf = 1,
  50                 },
  51                 .init_freq = 1049480 - 300,
  52         },
  53         {
  54                 .demod_info = {
  55                         I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x10),
  56                 },
  57                 .tuner_info = {
  58                         I2C_BOARD_INFO("mxl301rf", 0x62),
  59                 },
  60                 .init_freq = 515142857,
  61         },
  62         {
  63                 .demod_info = {
  64                         I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x13),
  65                 },
  66                 .tuner_info = {
  67                         I2C_BOARD_INFO("qm1d1c0042", 0x60),
  68                 },
  69                 .tuner_cfg.qm1d1c0042 = {
  70                         .lpf = 1,
  71                 },
  72                 .init_freq = 1049480 + 300,
  73         },
  74         {
  75                 .demod_info = {
  76                         I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x12),
  77                 },
  78                 .tuner_info = {
  79                         I2C_BOARD_INFO("mxl301rf", 0x61),
  80                 },
  81                 .init_freq = 521142857,
  82         },
  83 };
  84
  85
  86 struct reg_val {
  87         u8 reg;
  88         u8 val;
  89 };
  90
  91 static int
  92 pt3_demod_write(struct pt3_adapter *adap, const struct reg_val *data, int num)
  93 {
  94         struct i2c_msg msg;
  95         int i, ret;
  96
  97         ret = 0;
  98         msg.addr = adap->i2c_demod->addr;
  99         msg.flags = 0;
 100         msg.len = 2;
 101         for (i = 0; i < num; i++) {
 102                 msg.buf = (u8 *)&data[i];
 103                 ret = i2c_transfer(adap->i2c_demod->adapter, &msg, 1);
 104                 if (ret == 0)
 105                         ret = -EREMOTE;
 106                 if (ret < 0)
 107                         return ret;
 108         }
 109         return 0;
 110 }
 111
 112 static inline void pt3_lnb_ctrl(struct pt3_board *pt3, bool on)
 113 {
 114         iowrite32((on ? 0x0f : 0x0c), pt3->regs[0] + REG_SYSTEM_W);
 115 }
 116
 117 static inline struct pt3_adapter *pt3_find_adapter(struct dvb_frontend *fe)
 118 {
 119         struct pt3_board *pt3;
 120         int i;
 121
 122         if (one_adapter) {
 123                 pt3 = fe->dvb->priv;
 124                 for (i = 0; i < PT3_NUM_FE; i++)
 125                         if (pt3->adaps[i]->fe == fe)
 126                                 return pt3->adaps[i];
 127         }
 128         return container_of(fe->dvb, struct pt3_adapter, dvb_adap);
 129 }
 130
 131 /*
 132  * all 4 tuners in PT3 are packaged in a can module (Sharp VA4M6JC2103).
 133  * it seems that they share the power lines and Amp power line and
 134  * adaps[3] controls those powers.
 135  */
 136 static int
 137 pt3_set_tuner_power(struct pt3_board *pt3, bool tuner_on, bool amp_on)
 138 {
 139         struct reg_val rv = { 0x1e, 0x99 };
 140
 141         if (tuner_on)
 142                 rv.val |= 0x40;
 143         if (amp_on)
 144                 rv.val |= 0x04;
 145         return pt3_demod_write(pt3->adaps[PT3_NUM_FE - 1], &rv, 1);
 146 }
 147
 148 static int pt3_set_lna(struct dvb_frontend *fe)
 149 {
 150         struct pt3_adapter *adap;
 151         struct pt3_board *pt3;
 152         u32 val;
 153         int ret;
 154
 155         /* LNA is shared btw. 2 TERR-tuners */
 156
 157         adap = pt3_find_adapter(fe);
 158         val = fe->dtv_property_cache.lna;
 159         if (val == LNA_AUTO || val == adap->cur_lna)
 160                 return 0;
 161
 162         pt3 = adap->dvb_adap.priv;
 163         if (mutex_lock_interruptible(&pt3->lock))
 164                 return -ERESTARTSYS;
 165         if (val)
 166                 pt3->lna_on_cnt++;
 167         else
 168                 pt3->lna_on_cnt--;
 169
 170         if (val && pt3->lna_on_cnt <= 1) {
 171                 pt3->lna_on_cnt = 1;
 172                 ret = pt3_set_tuner_power(pt3, true, true);
 173         } else if (!val && pt3->lna_on_cnt <= 0) {
 174                 pt3->lna_on_cnt = 0;
 175                 ret = pt3_set_tuner_power(pt3, true, false);
 176         } else
 177                 ret = 0;
 178         mutex_unlock(&pt3->lock);
 179         adap->cur_lna = (val != 0);
 180         return ret;
 181 }
 182
 183 static int pt3_set_voltage(struct dvb_frontend *fe, enum fe_sec_voltage volt)
 184 {
 185         struct pt3_adapter *adap;
 186         struct pt3_board *pt3;
 187         bool on;
 188
 189         /* LNB power is shared btw. 2 SAT-tuners */
 190
 191         adap = pt3_find_adapter(fe);
 192         on = (volt != SEC_VOLTAGE_OFF);
 193         if (on == adap->cur_lnb)
 194                 return 0;
 195         adap->cur_lnb = on;
 196         pt3 = adap->dvb_adap.priv;
 197         if (mutex_lock_interruptible(&pt3->lock))
 198                 return -ERESTARTSYS;
 199         if (on)
 200                 pt3->lnb_on_cnt++;
 201         else
 202                 pt3->lnb_on_cnt--;
 203
 204         if (on && pt3->lnb_on_cnt <= 1) {
 205                 pt3->lnb_on_cnt = 1;
 206                 pt3_lnb_ctrl(pt3, true);
 207         } else if (!on && pt3->lnb_on_cnt <= 0) {
 208                 pt3->lnb_on_cnt = 0;
 209                 pt3_lnb_ctrl(pt3, false);
 210         }
 211         mutex_unlock(&pt3->lock);
 212         return 0;
 213 }
 214
 215 /* register values used in pt3_fe_init() */
 216
 217 static const struct reg_val init0_sat[] = {
 218         { 0x03, 0x01 },
 219         { 0x1e, 0x10 },
 220 };
 221 static const struct reg_val init0_ter[] = {
 222         { 0x01, 0x40 },
 223         { 0x1c, 0x10 },
 224 };
 225 static const struct reg_val cfg_sat[] = {
 226         { 0x1c, 0x15 },
 227         { 0x1f, 0x04 },
 228 };
 229 static const struct reg_val cfg_ter[] = {
 230         { 0x1d, 0x01 },
 231 };
 232
 233 /*
 234  * pt3_fe_init: initialize demod sub modules and ISDB-T tuners all at once.
 235  *
 236  * As for demod IC (TC90522) and ISDB-T tuners (MxL301RF),
 237  * the i2c sequences for init'ing them are not public and hidden in a ROM,
 238  * and include the board specific configurations as well.
 239  * They are stored in a lump and cannot be taken out / accessed separately,
 240  * thus cannot be moved to the FE/tuner driver.
 241  */
 242 static int pt3_fe_init(struct pt3_board *pt3)
 243 {
 244         int i, ret;
 245         struct dvb_frontend *fe;
 246
 247         pt3_i2c_reset(pt3);
 248         ret = pt3_init_all_demods(pt3);
 249         if (ret < 0) {
 250                 dev_warn(&pt3->pdev->dev, "Failed to init demod chips\n");
 251                 return ret;
 252         }
 253
 254         /* additional config? */
 255         for (i = 0; i < PT3_NUM_FE; i++) {
 256                 fe = pt3->adaps[i]->fe;
 257
 258                 if (fe->ops.delsys[0] == SYS_ISDBS)
 259                         ret = pt3_demod_write(pt3->adaps[i],
 260                                               init0_sat, ARRAY_SIZE(init0_sat));
 261                 else
 262                         ret = pt3_demod_write(pt3->adaps[i],
 263                                               init0_ter, ARRAY_SIZE(init0_ter));
 264                 if (ret < 0) {
 265                         dev_warn(&pt3->pdev->dev,
 266                                  "demod[%d] failed in init sequence0\n", i);
 267                         return ret;
 268                 }
 269                 ret = fe->ops.init(fe);
 270                 if (ret < 0)
 271                         return ret;
 272         }
 273
 274         usleep_range(2000, 4000);
 275         ret = pt3_set_tuner_power(pt3, true, false);
 276         if (ret < 0) {
 277                 dev_warn(&pt3->pdev->dev, "Failed to control tuner module\n");
 278                 return ret;
 279         }
 280
 281         /* output pin configuration */
 282         for (i = 0; i < PT3_NUM_FE; i++) {
 283                 fe = pt3->adaps[i]->fe;
 284                 if (fe->ops.delsys[0] == SYS_ISDBS)
 285                         ret = pt3_demod_write(pt3->adaps[i],
 286                                                 cfg_sat, ARRAY_SIZE(cfg_sat));
 287                 else
 288                         ret = pt3_demod_write(pt3->adaps[i],
 289                                                 cfg_ter, ARRAY_SIZE(cfg_ter));
 290                 if (ret < 0) {
 291                         dev_warn(&pt3->pdev->dev,
 292                                  "demod[%d] failed in init sequence1\n", i);
 293                         return ret;
 294                 }
 295         }
 296         usleep_range(4000, 6000);
 297
 298         for (i = 0; i < PT3_NUM_FE; i++) {
 299                 fe = pt3->adaps[i]->fe;
 300                 if (fe->ops.delsys[0] != SYS_ISDBS)
 301                         continue;
 302                 /* init and wake-up ISDB-S tuners */
 303                 ret = fe->ops.tuner_ops.init(fe);
 304                 if (ret < 0) {
 305                         dev_warn(&pt3->pdev->dev,
 306                                  "Failed to init SAT-tuner[%d]\n", i);
 307                         return ret;
 308                 }
 309         }
 310         ret = pt3_init_all_mxl301rf(pt3);
 311         if (ret < 0) {
 312                 dev_warn(&pt3->pdev->dev, "Failed to init TERR-tuners\n");
 313                 return ret;
 314         }
 315
 316         ret = pt3_set_tuner_power(pt3, true, true);
 317         if (ret < 0) {
 318                 dev_warn(&pt3->pdev->dev, "Failed to control tuner module\n");
 319                 return ret;
 320         }
 321
 322         /* Wake up all tuners and make an initial tuning,
 323          * in order to avoid interference among the tuners in the module,
 324          * according to the doc from the manufacturer.
 325          */
 326         for (i = 0; i < PT3_NUM_FE; i++) {
 327                 fe = pt3->adaps[i]->fe;
 328                 ret = 0;
 329                 if (fe->ops.delsys[0] == SYS_ISDBT)
 330                         ret = fe->ops.tuner_ops.init(fe);
 331                 /* set only when called from pt3_probe(), not resume() */
 332                 if (ret == 0 && fe->dtv_property_cache.frequency == 0) {
 333                         fe->dtv_property_cache.frequency =
 334                                                 adap_conf[i].init_freq;
 335                         ret = fe->ops.tuner_ops.set_params(fe);
 336                 }
 337                 if (ret < 0) {
 338                         dev_warn(&pt3->pdev->dev,
 339                                  "Failed in initial tuning of tuner[%d]\n", i);
 340                         return ret;
 341                 }
 342         }
 343
 344         /* and sleep again, waiting to be opened by users. */
 345         for (i = 0; i < PT3_NUM_FE; i++) {
 346                 fe = pt3->adaps[i]->fe;
 347                 if (fe->ops.tuner_ops.sleep)
 348                         ret = fe->ops.tuner_ops.sleep(fe);
 349                 if (ret < 0)
 350                         break;
 351                 if (fe->ops.sleep)
 352                         ret = fe->ops.sleep(fe);
 353                 if (ret < 0)
 354                         break;
 355                 if (fe->ops.delsys[0] == SYS_ISDBS)
 356                         fe->ops.set_voltage = &pt3_set_voltage;
 357                 else
 358                         fe->ops.set_lna = &pt3_set_lna;
 359         }
 360         if (i < PT3_NUM_FE) {
 361                 dev_warn(&pt3->pdev->dev, "FE[%d] failed to standby\n", i);
 362                 return ret;
 363         }
 364         return 0;
 365 }
 366
 367
 368 static int pt3_attach_fe(struct pt3_board *pt3, int i)
 369 {
 370         const struct i2c_board_info *info;
 371         struct tc90522_config cfg;
 372         struct i2c_client *cl;
 373         struct dvb_adapter *dvb_adap;
 374         int ret;
 375
 376         info = &adap_conf[i].demod_info;
 377         cfg = adap_conf[i].demod_cfg;
 378         cfg.tuner_i2c = NULL;
 379
 380         ret = -ENODEV;
 381         cl = dvb_module_probe("tc90522", info->type, &pt3->i2c_adap,
 382                               info->addr, &cfg);
 383         if (!cl)
 384                 return -ENODEV;
 385         pt3->adaps[i]->i2c_demod = cl;
 386
 387         if (!strncmp(cl->name, TC90522_I2C_DEV_SAT,
 388                      strlen(TC90522_I2C_DEV_SAT))) {
 389                 struct qm1d1c0042_config tcfg;
 390
 391                 tcfg = adap_conf[i].tuner_cfg.qm1d1c0042;
 392                 tcfg.fe = cfg.fe;
 393                 info = &adap_conf[i].tuner_info;
 394                 cl = dvb_module_probe("qm1d1c0042", info->type, cfg.tuner_i2c,
 395                                       info->addr, &tcfg);
 396         } else {
 397                 struct mxl301rf_config tcfg;
 398
 399                 tcfg = adap_conf[i].tuner_cfg.mxl301rf;
 400                 tcfg.fe = cfg.fe;
 401                 info = &adap_conf[i].tuner_info;
 402                 cl = dvb_module_probe("mxl301rf", info->type, cfg.tuner_i2c,
 403                                       info->addr, &tcfg);
 404         }
 405         if (!cl)
 406                 goto err_demod_module_release;
 407         pt3->adaps[i]->i2c_tuner = cl;
 408
 409         dvb_adap = &pt3->adaps[one_adapter ? 0 : i]->dvb_adap;
 410         ret = dvb_register_frontend(dvb_adap, cfg.fe);
 411         if (ret < 0)
 412                 goto err_tuner_module_release;
 413         pt3->adaps[i]->fe = cfg.fe;
 414         return 0;
 415
 416 err_tuner_module_release:
 417         dvb_module_release(pt3->adaps[i]->i2c_tuner);
 418 err_demod_module_release:
 419         dvb_module_release(pt3->adaps[i]->i2c_demod);
 420
 421         return ret;
 422 }
 423
 424
 425 static int pt3_fetch_thread(void *data)
 426 {
 427         struct pt3_adapter *adap = data;
 428         ktime_t delay;
 429         bool was_frozen;
 430
 431 #define PT3_INITIAL_BUF_DROPS 4
 432 #define PT3_FETCH_DELAY 10
 433 #define PT3_FETCH_DELAY_DELTA 2
 434
 435         pt3_init_dmabuf(adap);
 436         adap->num_discard = PT3_INITIAL_BUF_DROPS;
 437
 438         dev_dbg(adap->dvb_adap.device, "PT3: [%s] started\n",
 439                 adap->thread->comm);
 440         set_freezable();
 441         while (!kthread_freezable_should_stop(&was_frozen)) {
 442                 if (was_frozen)
 443                         adap->num_discard = PT3_INITIAL_BUF_DROPS;
 444
 445                 pt3_proc_dma(adap);
 446
 447                 delay = ktime_set(0, PT3_FETCH_DELAY * NSEC_PER_MSEC);
 448                 set_current_state(TASK_UNINTERRUPTIBLE);
 449                 freezable_schedule_hrtimeout_range(&delay,
 450                                         PT3_FETCH_DELAY_DELTA * NSEC_PER_MSEC,
 451                                         HRTIMER_MODE_REL);
 452         }
 453         dev_dbg(adap->dvb_adap.device, "PT3: [%s] exited\n",
 454                 adap->thread->comm);
 455         return 0;
 456 }
 457
 458 static int pt3_start_streaming(struct pt3_adapter *adap)
 459 {
 460         struct task_struct *thread;
 461
 462         /* start fetching thread */
 463         thread = kthread_run(pt3_fetch_thread, adap, "pt3-ad%i-dmx%i",
 464                                 adap->dvb_adap.num, adap->dmxdev.dvbdev->id);
 465         if (IS_ERR(thread)) {
 466                 int ret = PTR_ERR(thread);
 467
 468                 adap->thread = NULL;
 469                 dev_warn(adap->dvb_adap.device,
 470                          "PT3 (adap:%d, dmx:%d): failed to start kthread\n",
 471                          adap->dvb_adap.num, adap->dmxdev.dvbdev->id);
 472                 return ret;
 473         }
 474         adap->thread = thread;
 475
 476         return pt3_start_dma(adap);
 477 }
 478
 479 static int pt3_stop_streaming(struct pt3_adapter *adap)
 480 {
 481         int ret;
 482
 483         ret = pt3_stop_dma(adap);
 484         if (ret)
 485                 dev_warn(adap->dvb_adap.device,
 486                          "PT3: failed to stop streaming of adap:%d/FE:%d\n",
 487                          adap->dvb_adap.num, adap->fe->id);
 488
 489         /* kill the fetching thread */
 490         ret = kthread_stop(adap->thread);
 491         adap->thread = NULL;
 492         return ret;
 493 }
 494
 495 static int pt3_start_feed(struct dvb_demux_feed *feed)
 496 {
 497         struct pt3_adapter *adap;
 498
 499         if (signal_pending(current))
 500                 return -EINTR;
 501
 502         adap = container_of(feed->demux, struct pt3_adapter, demux);
 503         adap->num_feeds++;
 504         if (adap->num_feeds > 1)
 505                 return 0;
 506
 507         return pt3_start_streaming(adap);
 508
 509 }
 510
 511 static int pt3_stop_feed(struct dvb_demux_feed *feed)
 512 {
 513         struct pt3_adapter *adap;
 514
 515         adap = container_of(feed->demux, struct pt3_adapter, demux);
 516
 517         adap->num_feeds--;
 518         if (adap->num_feeds > 0 || !adap->thread)
 519                 return 0;
 520         adap->num_feeds = 0;
 521
 522         return pt3_stop_streaming(adap);
 523 }
 524
 525
 526 static int pt3_alloc_adapter(struct pt3_board *pt3, int index)
 527 {
 528         int ret;
 529         struct pt3_adapter *adap;
 530         struct dvb_adapter *da;
 531
 532         adap = kzalloc(sizeof(*adap), GFP_KERNEL);
 533         if (!adap)
 534                 return -ENOMEM;
 535
 536         pt3->adaps[index] = adap;
 537         adap->adap_idx = index;
 538
 539         if (index == 0 || !one_adapter) {
 540                 ret = dvb_register_adapter(&adap->dvb_adap, "PT3 DVB",
 541                                 THIS_MODULE, &pt3->pdev->dev, adapter_nr);
 542                 if (ret < 0) {
 543                         dev_err(&pt3->pdev->dev,
 544                                 "failed to register adapter dev\n");
 545                         goto err_mem;
 546                 }
 547                 da = &adap->dvb_adap;
 548         } else
 549                 da = &pt3->adaps[0]->dvb_adap;
 550
 551         adap->dvb_adap.priv = pt3;
 552         adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
 553         adap->demux.priv = adap;
 554         adap->demux.feednum = 256;
 555         adap->demux.filternum = 256;
 556         adap->demux.start_feed = pt3_start_feed;
 557         adap->demux.stop_feed = pt3_stop_feed;
 558         ret = dvb_dmx_init(&adap->demux);
 559         if (ret < 0) {
 560                 dev_err(&pt3->pdev->dev, "failed to init dmx dev\n");
 561                 goto err_adap;
 562         }
 563
 564         adap->dmxdev.filternum = 256;
 565         adap->dmxdev.demux = &adap->demux.dmx;
 566         ret = dvb_dmxdev_init(&adap->dmxdev, da);
 567         if (ret < 0) {
 568                 dev_err(&pt3->pdev->dev, "failed to init dmxdev\n");
 569                 goto err_demux;
 570         }
 571
 572         ret = pt3_alloc_dmabuf(adap);
 573         if (ret) {
 574                 dev_err(&pt3->pdev->dev, "failed to alloc DMA buffers\n");
 575                 goto err_dmabuf;
 576         }
 577
 578         return 0;
 579
 580 err_dmabuf:
 581         pt3_free_dmabuf(adap);
 582         dvb_dmxdev_release(&adap->dmxdev);
 583 err_demux:
 584         dvb_dmx_release(&adap->demux);
 585 err_adap:
 586         if (index == 0 || !one_adapter)
 587                 dvb_unregister_adapter(da);
 588 err_mem:
 589         kfree(adap);
 590         pt3->adaps[index] = NULL;
 591         return ret;
 592 }
 593
 594 static void pt3_cleanup_adapter(struct pt3_board *pt3, int index)
 595 {
 596         struct pt3_adapter *adap;
 597         struct dmx_demux *dmx;
 598
 599         adap = pt3->adaps[index];
 600         if (adap == NULL)
 601                 return;
 602
 603         /* stop demux kthread */
 604         if (adap->thread)
 605                 pt3_stop_streaming(adap);
 606
 607         dmx = &adap->demux.dmx;
 608         dmx->close(dmx);
 609         if (adap->fe) {
 610                 adap->fe->callback = NULL;
 611                 if (adap->fe->frontend_priv)
 612                         dvb_unregister_frontend(adap->fe);
 613                 dvb_module_release(adap->i2c_tuner);
 614                 dvb_module_release(adap->i2c_demod);
 615         }
 616         pt3_free_dmabuf(adap);
 617         dvb_dmxdev_release(&adap->dmxdev);
 618         dvb_dmx_release(&adap->demux);
 619         if (index == 0 || !one_adapter)
 620                 dvb_unregister_adapter(&adap->dvb_adap);
 621         kfree(adap);
 622         pt3->adaps[index] = NULL;
 623 }
 624
 625 #ifdef CONFIG_PM_SLEEP
 626
 627 static int pt3_suspend(struct device *dev)
 628 {
 629         struct pt3_board *pt3 = dev_get_drvdata(dev);
 630         int i;
 631         struct pt3_adapter *adap;
 632
 633         for (i = 0; i < PT3_NUM_FE; i++) {
 634                 adap = pt3->adaps[i];
 635                 if (adap->num_feeds > 0)
 636                         pt3_stop_dma(adap);
 637                 dvb_frontend_suspend(adap->fe);
 638                 pt3_free_dmabuf(adap);
 639         }
 640
 641         pt3_lnb_ctrl(pt3, false);
 642         pt3_set_tuner_power(pt3, false, false);
 643         return 0;
 644 }
 645
 646 static int pt3_resume(struct device *dev)
 647 {
 648         struct pt3_board *pt3 = dev_get_drvdata(dev);
 649         int i, ret;
 650         struct pt3_adapter *adap;
 651
 652         ret = pt3_fe_init(pt3);
 653         if (ret)
 654                 return ret;
 655
 656         if (pt3->lna_on_cnt > 0)
 657                 pt3_set_tuner_power(pt3, true, true);
 658         if (pt3->lnb_on_cnt > 0)
 659                 pt3_lnb_ctrl(pt3, true);
 660
 661         for (i = 0; i < PT3_NUM_FE; i++) {
 662                 adap = pt3->adaps[i];
 663                 dvb_frontend_resume(adap->fe);
 664                 ret = pt3_alloc_dmabuf(adap);
 665                 if (ret) {
 666                         dev_err(&pt3->pdev->dev, "failed to alloc DMA bufs\n");
 667                         continue;
 668                 }
 669                 if (adap->num_feeds > 0)
 670                         pt3_start_dma(adap);
 671         }
 672
 673         return 0;
 674 }
 675
 676 #endif /* CONFIG_PM_SLEEP */
 677
 678
 679 static void pt3_remove(struct pci_dev *pdev)
 680 {
 681         struct pt3_board *pt3;
 682         int i;
 683
 684         pt3 = pci_get_drvdata(pdev);
 685         for (i = PT3_NUM_FE - 1; i >= 0; i--)
 686                 pt3_cleanup_adapter(pt3, i);
 687         i2c_del_adapter(&pt3->i2c_adap);
 688 }
 689
 690 static int pt3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 691 {
 692         u8 rev;
 693         u32 ver;
 694         int i, ret;
 695         struct pt3_board *pt3;
 696         struct i2c_adapter *i2c;
 697
 698         if (pci_read_config_byte(pdev, PCI_REVISION_ID, &rev) || rev != 1)
 699                 return -ENODEV;
 700
 701         ret = pcim_enable_device(pdev);
 702         if (ret < 0)
 703                 return -ENODEV;
 704         pci_set_master(pdev);
 705
 706         ret = pcim_iomap_regions(pdev, BIT(0) | BIT(2), DRV_NAME);
 707         if (ret < 0)
 708                 return ret;
 709
 710         ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
 711         if (ret == 0)
 712                 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
 713         else {
 714                 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
 715                 if (ret == 0)
 716                         dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
 717                 else {
 718                         dev_err(&pdev->dev, "Failed to set DMA mask\n");
 719                         return ret;
 720                 }
 721                 dev_info(&pdev->dev, "Use 32bit DMA\n");
 722         }
 723
 724         pt3 = devm_kzalloc(&pdev->dev, sizeof(*pt3), GFP_KERNEL);
 725         if (!pt3)
 726                 return -ENOMEM;
 727         pci_set_drvdata(pdev, pt3);
 728         pt3->pdev = pdev;
 729         mutex_init(&pt3->lock);
 730         pt3->regs[0] = pcim_iomap_table(pdev)[0];
 731         pt3->regs[1] = pcim_iomap_table(pdev)[2];
 732
 733         ver = ioread32(pt3->regs[0] + REG_VERSION);
 734         if ((ver >> 16) != 0x0301) {
 735                 dev_warn(&pdev->dev, "PT%d, I/F-ver.:%d not supported\n",
 736                          ver >> 24, (ver & 0x00ff0000) >> 16);
 737                 return -ENODEV;
 738         }
 739
 740         pt3->num_bufs = clamp_val(num_bufs, MIN_DATA_BUFS, MAX_DATA_BUFS);
 741
 742         pt3->i2c_buf = devm_kmalloc(&pdev->dev, sizeof(*pt3->i2c_buf), GFP_KERNEL);
 743         if (!pt3->i2c_buf)
 744                 return -ENOMEM;
 745         i2c = &pt3->i2c_adap;
 746         i2c->owner = THIS_MODULE;
 747         i2c->algo = &pt3_i2c_algo;
 748         i2c->algo_data = NULL;
 749         i2c->dev.parent = &pdev->dev;
 750         strscpy(i2c->name, DRV_NAME, sizeof(i2c->name));
 751         i2c_set_adapdata(i2c, pt3);
 752         ret = i2c_add_adapter(i2c);
 753         if (ret < 0)
 754                 return ret;
 755
 756         for (i = 0; i < PT3_NUM_FE; i++) {
 757                 ret = pt3_alloc_adapter(pt3, i);
 758                 if (ret < 0)
 759                         break;
 760
 761                 ret = pt3_attach_fe(pt3, i);
 762                 if (ret < 0)
 763                         break;
 764         }
 765         if (i < PT3_NUM_FE) {
 766                 dev_err(&pdev->dev, "Failed to create FE%d\n", i);
 767                 goto err_cleanup_adapters;
 768         }
 769
 770         ret = pt3_fe_init(pt3);
 771         if (ret < 0) {
 772                 dev_err(&pdev->dev, "Failed to init frontends\n");
 773                 i = PT3_NUM_FE - 1;
 774                 goto err_cleanup_adapters;
 775         }
 776
 777         dev_info(&pdev->dev,
 778                  "successfully init'ed PT%d (fw:0x%02x, I/F:0x%02x)\n",
 779                  ver >> 24, (ver >> 8) & 0xff, (ver >> 16) & 0xff);
 780         return 0;
 781
 782 err_cleanup_adapters:
 783         while (i >= 0)
 784                 pt3_cleanup_adapter(pt3, i--);
 785         i2c_del_adapter(i2c);
 786         return ret;
 787 }
 788
 789 static const struct pci_device_id pt3_id_table[] = {
 790         { PCI_DEVICE_SUB(0x1172, 0x4c15, 0xee8d, 0x0368) },
 791         { },
 792 };
 793 MODULE_DEVICE_TABLE(pci, pt3_id_table);
 794
 795 static SIMPLE_DEV_PM_OPS(pt3_pm_ops, pt3_suspend, pt3_resume);
 796
 797 static struct pci_driver pt3_driver = {
 798         .name           = DRV_NAME,
 799         .probe          = pt3_probe,
 800         .remove         = pt3_remove,
 801         .id_table       = pt3_id_table,
 802
 803         .driver.pm      = &pt3_pm_ops,
 804 };
 805
 806 module_pci_driver(pt3_driver);
 807
 808 MODULE_DESCRIPTION("Earthsoft PT3 Driver");
 809 MODULE_AUTHOR("Akihiro TSUKADA");
 810 MODULE_LICENSE("GPL");