1/* 2 * Earthsoft PT3 driver 3 * 4 * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation version 2. 9 * 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17#include <linux/freezer.h> 18#include <linux/kernel.h> 19#include <linux/kthread.h> 20#include <linux/mutex.h> 21#include <linux/module.h> 22#include <linux/pci.h> 23#include <linux/string.h> 24 25#include "dmxdev.h" 26#include "dvbdev.h" 27#include "dvb_demux.h" 28#include "dvb_frontend.h" 29 30#include "pt3.h" 31 32DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 33 34static bool one_adapter; 35module_param(one_adapter, bool, 0444); 36MODULE_PARM_DESC(one_adapter, "Place FE's together under one adapter."); 37 38static int num_bufs = 4; 39module_param(num_bufs, int, 0444); 40MODULE_PARM_DESC(num_bufs, "Number of DMA buffer (188KiB) per FE."); 41 42 43static const struct i2c_algorithm pt3_i2c_algo = { 44 .master_xfer = &pt3_i2c_master_xfer, 45 .functionality = &pt3_i2c_functionality, 46}; 47 48static const struct pt3_adap_config adap_conf[PT3_NUM_FE] = { 49 { 50 .demod_info = { 51 I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x11), 52 }, 53 .tuner_info = { 54 I2C_BOARD_INFO("qm1d1c0042", 0x63), 55 }, 56 .tuner_cfg.qm1d1c0042 = { 57 .lpf = 1, 58 }, 59 .init_freq = 1049480 - 300, 60 }, 61 { 62 .demod_info = { 63 I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x10), 64 }, 65 .tuner_info = { 66 I2C_BOARD_INFO("mxl301rf", 0x62), 67 }, 68 .init_freq = 515142857, 69 }, 70 { 71 .demod_info = { 72 I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x13), 73 }, 74 .tuner_info = { 75 I2C_BOARD_INFO("qm1d1c0042", 0x60), 76 }, 77 .tuner_cfg.qm1d1c0042 = { 78 .lpf = 1, 79 }, 80 .init_freq = 1049480 + 300, 81 }, 82 { 83 .demod_info = { 84 I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x12), 85 }, 86 .tuner_info = { 87 I2C_BOARD_INFO("mxl301rf", 0x61), 88 }, 89 .init_freq = 521142857, 90 }, 91}; 92 93 94struct reg_val { 95 u8 reg; 96 u8 val; 97}; 98 99static int 100pt3_demod_write(struct pt3_adapter *adap, const struct reg_val *data, int num) 101{ 102 struct i2c_msg msg; 103 int i, ret; 104 105 ret = 0; 106 msg.addr = adap->i2c_demod->addr; 107 msg.flags = 0; 108 msg.len = 2; 109 for (i = 0; i < num; i++) { 110 msg.buf = (u8 *)&data[i]; 111 ret = i2c_transfer(adap->i2c_demod->adapter, &msg, 1); 112 if (ret == 0) 113 ret = -EREMOTE; 114 if (ret < 0) 115 return ret; 116 } 117 return 0; 118} 119 120static inline void pt3_lnb_ctrl(struct pt3_board *pt3, bool on) 121{ 122 iowrite32((on ? 0x0f : 0x0c), pt3->regs[0] + REG_SYSTEM_W); 123} 124 125static inline struct pt3_adapter *pt3_find_adapter(struct dvb_frontend *fe) 126{ 127 struct pt3_board *pt3; 128 int i; 129 130 if (one_adapter) { 131 pt3 = fe->dvb->priv; 132 for (i = 0; i < PT3_NUM_FE; i++) 133 if (pt3->adaps[i]->fe == fe) 134 return pt3->adaps[i]; 135 } 136 return container_of(fe->dvb, struct pt3_adapter, dvb_adap); 137} 138 139/* 140 * all 4 tuners in PT3 are packaged in a can module (Sharp VA4M6JC2103). 141 * it seems that they share the power lines and Amp power line and 142 * adaps[3] controls those powers. 143 */ 144static int 145pt3_set_tuner_power(struct pt3_board *pt3, bool tuner_on, bool amp_on) 146{ 147 struct reg_val rv = { 0x1e, 0x99 }; 148 149 if (tuner_on) 150 rv.val |= 0x40; 151 if (amp_on) 152 rv.val |= 0x04; 153 return pt3_demod_write(pt3->adaps[PT3_NUM_FE - 1], &rv, 1); 154} 155 156static int pt3_set_lna(struct dvb_frontend *fe) 157{ 158 struct pt3_adapter *adap; 159 struct pt3_board *pt3; 160 u32 val; 161 int ret; 162 163 /* LNA is shared btw. 2 TERR-tuners */ 164 165 adap = pt3_find_adapter(fe); 166 val = fe->dtv_property_cache.lna; 167 if (val == LNA_AUTO || val == adap->cur_lna) 168 return 0; 169 170 pt3 = adap->dvb_adap.priv; 171 if (mutex_lock_interruptible(&pt3->lock)) 172 return -ERESTARTSYS; 173 if (val) 174 pt3->lna_on_cnt++; 175 else 176 pt3->lna_on_cnt--; 177 178 if (val && pt3->lna_on_cnt <= 1) { 179 pt3->lna_on_cnt = 1; 180 ret = pt3_set_tuner_power(pt3, true, true); 181 } else if (!val && pt3->lna_on_cnt <= 0) { 182 pt3->lna_on_cnt = 0; 183 ret = pt3_set_tuner_power(pt3, true, false); 184 } else 185 ret = 0; 186 mutex_unlock(&pt3->lock); 187 adap->cur_lna = (val != 0); 188 return ret; 189} 190 191static int pt3_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t volt) 192{ 193 struct pt3_adapter *adap; 194 struct pt3_board *pt3; 195 bool on; 196 197 /* LNB power is shared btw. 2 SAT-tuners */ 198 199 adap = pt3_find_adapter(fe); 200 on = (volt != SEC_VOLTAGE_OFF); 201 if (on == adap->cur_lnb) 202 return 0; 203 adap->cur_lnb = on; 204 pt3 = adap->dvb_adap.priv; 205 if (mutex_lock_interruptible(&pt3->lock)) 206 return -ERESTARTSYS; 207 if (on) 208 pt3->lnb_on_cnt++; 209 else 210 pt3->lnb_on_cnt--; 211 212 if (on && pt3->lnb_on_cnt <= 1) { 213 pt3->lnb_on_cnt = 1; 214 pt3_lnb_ctrl(pt3, true); 215 } else if (!on && pt3->lnb_on_cnt <= 0) { 216 pt3->lnb_on_cnt = 0; 217 pt3_lnb_ctrl(pt3, false); 218 } 219 mutex_unlock(&pt3->lock); 220 return 0; 221} 222 223/* register values used in pt3_fe_init() */ 224 225static const struct reg_val init0_sat[] = { 226 { 0x03, 0x01 }, 227 { 0x1e, 0x10 }, 228}; 229static const struct reg_val init0_ter[] = { 230 { 0x01, 0x40 }, 231 { 0x1c, 0x10 }, 232}; 233static const struct reg_val cfg_sat[] = { 234 { 0x1c, 0x15 }, 235 { 0x1f, 0x04 }, 236}; 237static const struct reg_val cfg_ter[] = { 238 { 0x1d, 0x01 }, 239}; 240 241/* 242 * pt3_fe_init: initialize demod sub modules and ISDB-T tuners all at once. 243 * 244 * As for demod IC (TC90522) and ISDB-T tuners (MxL301RF), 245 * the i2c sequences for init'ing them are not public and hidden in a ROM, 246 * and include the board specific configurations as well. 247 * They are stored in a lump and cannot be taken out / accessed separately, 248 * thus cannot be moved to the FE/tuner driver. 249 */ 250static int pt3_fe_init(struct pt3_board *pt3) 251{ 252 int i, ret; 253 struct dvb_frontend *fe; 254 255 pt3_i2c_reset(pt3); 256 ret = pt3_init_all_demods(pt3); 257 if (ret < 0) { 258 dev_warn(&pt3->pdev->dev, "Failed to init demod chips\n"); 259 return ret; 260 } 261 262 /* additional config? */ 263 for (i = 0; i < PT3_NUM_FE; i++) { 264 fe = pt3->adaps[i]->fe; 265 266 if (fe->ops.delsys[0] == SYS_ISDBS) 267 ret = pt3_demod_write(pt3->adaps[i], 268 init0_sat, ARRAY_SIZE(init0_sat)); 269 else 270 ret = pt3_demod_write(pt3->adaps[i], 271 init0_ter, ARRAY_SIZE(init0_ter)); 272 if (ret < 0) { 273 dev_warn(&pt3->pdev->dev, 274 "demod[%d] failed in init sequence0\n", i); 275 return ret; 276 } 277 ret = fe->ops.init(fe); 278 if (ret < 0) 279 return ret; 280 } 281 282 usleep_range(2000, 4000); 283 ret = pt3_set_tuner_power(pt3, true, false); 284 if (ret < 0) { 285 dev_warn(&pt3->pdev->dev, "Failed to control tuner module\n"); 286 return ret; 287 } 288 289 /* output pin configuration */ 290 for (i = 0; i < PT3_NUM_FE; i++) { 291 fe = pt3->adaps[i]->fe; 292 if (fe->ops.delsys[0] == SYS_ISDBS) 293 ret = pt3_demod_write(pt3->adaps[i], 294 cfg_sat, ARRAY_SIZE(cfg_sat)); 295 else 296 ret = pt3_demod_write(pt3->adaps[i], 297 cfg_ter, ARRAY_SIZE(cfg_ter)); 298 if (ret < 0) { 299 dev_warn(&pt3->pdev->dev, 300 "demod[%d] failed in init sequence1\n", i); 301 return ret; 302 } 303 } 304 usleep_range(4000, 6000); 305 306 for (i = 0; i < PT3_NUM_FE; i++) { 307 fe = pt3->adaps[i]->fe; 308 if (fe->ops.delsys[0] != SYS_ISDBS) 309 continue; 310 /* init and wake-up ISDB-S tuners */ 311 ret = fe->ops.tuner_ops.init(fe); 312 if (ret < 0) { 313 dev_warn(&pt3->pdev->dev, 314 "Failed to init SAT-tuner[%d]\n", i); 315 return ret; 316 } 317 } 318 ret = pt3_init_all_mxl301rf(pt3); 319 if (ret < 0) { 320 dev_warn(&pt3->pdev->dev, "Failed to init TERR-tuners\n"); 321 return ret; 322 } 323 324 ret = pt3_set_tuner_power(pt3, true, true); 325 if (ret < 0) { 326 dev_warn(&pt3->pdev->dev, "Failed to control tuner module\n"); 327 return ret; 328 } 329 330 /* Wake up all tuners and make an initial tuning, 331 * in order to avoid interference among the tuners in the module, 332 * according to the doc from the manufacturer. 333 */ 334 for (i = 0; i < PT3_NUM_FE; i++) { 335 fe = pt3->adaps[i]->fe; 336 ret = 0; 337 if (fe->ops.delsys[0] == SYS_ISDBT) 338 ret = fe->ops.tuner_ops.init(fe); 339 /* set only when called from pt3_probe(), not resume() */ 340 if (ret == 0 && fe->dtv_property_cache.frequency == 0) { 341 fe->dtv_property_cache.frequency = 342 adap_conf[i].init_freq; 343 ret = fe->ops.tuner_ops.set_params(fe); 344 } 345 if (ret < 0) { 346 dev_warn(&pt3->pdev->dev, 347 "Failed in initial tuning of tuner[%d]\n", i); 348 return ret; 349 } 350 } 351 352 /* and sleep again, waiting to be opened by users. */ 353 for (i = 0; i < PT3_NUM_FE; i++) { 354 fe = pt3->adaps[i]->fe; 355 if (fe->ops.tuner_ops.sleep) 356 ret = fe->ops.tuner_ops.sleep(fe); 357 if (ret < 0) 358 break; 359 if (fe->ops.sleep) 360 ret = fe->ops.sleep(fe); 361 if (ret < 0) 362 break; 363 if (fe->ops.delsys[0] == SYS_ISDBS) 364 fe->ops.set_voltage = &pt3_set_voltage; 365 else 366 fe->ops.set_lna = &pt3_set_lna; 367 } 368 if (i < PT3_NUM_FE) { 369 dev_warn(&pt3->pdev->dev, "FE[%d] failed to standby\n", i); 370 return ret; 371 } 372 return 0; 373} 374 375 376static int pt3_attach_fe(struct pt3_board *pt3, int i) 377{ 378 struct i2c_board_info info; 379 struct tc90522_config cfg; 380 struct i2c_client *cl; 381 struct dvb_adapter *dvb_adap; 382 int ret; 383 384 info = adap_conf[i].demod_info; 385 cfg = adap_conf[i].demod_cfg; 386 cfg.tuner_i2c = NULL; 387 info.platform_data = &cfg; 388 389 ret = -ENODEV; 390 request_module("tc90522"); 391 cl = i2c_new_device(&pt3->i2c_adap, &info); 392 if (!cl || !cl->dev.driver) 393 return -ENODEV; 394 pt3->adaps[i]->i2c_demod = cl; 395 if (!try_module_get(cl->dev.driver->owner)) 396 goto err_demod_i2c_unregister_device; 397 398 if (!strncmp(cl->name, TC90522_I2C_DEV_SAT, sizeof(cl->name))) { 399 struct qm1d1c0042_config tcfg; 400 401 tcfg = adap_conf[i].tuner_cfg.qm1d1c0042; 402 tcfg.fe = cfg.fe; 403 info = adap_conf[i].tuner_info; 404 info.platform_data = &tcfg; 405 request_module("qm1d1c0042"); 406 cl = i2c_new_device(cfg.tuner_i2c, &info); 407 } else { 408 struct mxl301rf_config tcfg; 409 410 tcfg = adap_conf[i].tuner_cfg.mxl301rf; 411 tcfg.fe = cfg.fe; 412 info = adap_conf[i].tuner_info; 413 info.platform_data = &tcfg; 414 request_module("mxl301rf"); 415 cl = i2c_new_device(cfg.tuner_i2c, &info); 416 } 417 if (!cl || !cl->dev.driver) 418 goto err_demod_module_put; 419 pt3->adaps[i]->i2c_tuner = cl; 420 if (!try_module_get(cl->dev.driver->owner)) 421 goto err_tuner_i2c_unregister_device; 422 423 dvb_adap = &pt3->adaps[one_adapter ? 0 : i]->dvb_adap; 424 ret = dvb_register_frontend(dvb_adap, cfg.fe); 425 if (ret < 0) 426 goto err_tuner_module_put; 427 pt3->adaps[i]->fe = cfg.fe; 428 return 0; 429 430err_tuner_module_put: 431 module_put(pt3->adaps[i]->i2c_tuner->dev.driver->owner); 432err_tuner_i2c_unregister_device: 433 i2c_unregister_device(pt3->adaps[i]->i2c_tuner); 434err_demod_module_put: 435 module_put(pt3->adaps[i]->i2c_demod->dev.driver->owner); 436err_demod_i2c_unregister_device: 437 i2c_unregister_device(pt3->adaps[i]->i2c_demod); 438 439 return ret; 440} 441 442 443static int pt3_fetch_thread(void *data) 444{ 445 struct pt3_adapter *adap = data; 446 ktime_t delay; 447 bool was_frozen; 448 449#define PT3_INITIAL_BUF_DROPS 4 450#define PT3_FETCH_DELAY 10 451#define PT3_FETCH_DELAY_DELTA 2 452 453 pt3_init_dmabuf(adap); 454 adap->num_discard = PT3_INITIAL_BUF_DROPS; 455 456 dev_dbg(adap->dvb_adap.device, "PT3: [%s] started\n", 457 adap->thread->comm); 458 set_freezable(); 459 while (!kthread_freezable_should_stop(&was_frozen)) { 460 if (was_frozen) 461 adap->num_discard = PT3_INITIAL_BUF_DROPS; 462 463 pt3_proc_dma(adap); 464 465 delay = ktime_set(0, PT3_FETCH_DELAY * NSEC_PER_MSEC); 466 set_current_state(TASK_UNINTERRUPTIBLE); 467 freezable_schedule_hrtimeout_range(&delay, 468 PT3_FETCH_DELAY_DELTA * NSEC_PER_MSEC, 469 HRTIMER_MODE_REL); 470 } 471 dev_dbg(adap->dvb_adap.device, "PT3: [%s] exited\n", 472 adap->thread->comm); 473 adap->thread = NULL; 474 return 0; 475} 476 477static int pt3_start_streaming(struct pt3_adapter *adap) 478{ 479 struct task_struct *thread; 480 481 /* start fetching thread */ 482 thread = kthread_run(pt3_fetch_thread, adap, "pt3-ad%i-dmx%i", 483 adap->dvb_adap.num, adap->dmxdev.dvbdev->id); 484 if (IS_ERR(thread)) { 485 int ret = PTR_ERR(thread); 486 487 dev_warn(adap->dvb_adap.device, 488 "PT3 (adap:%d, dmx:%d): failed to start kthread\n", 489 adap->dvb_adap.num, adap->dmxdev.dvbdev->id); 490 return ret; 491 } 492 adap->thread = thread; 493 494 return pt3_start_dma(adap); 495} 496 497static int pt3_stop_streaming(struct pt3_adapter *adap) 498{ 499 int ret; 500 501 ret = pt3_stop_dma(adap); 502 if (ret) 503 dev_warn(adap->dvb_adap.device, 504 "PT3: failed to stop streaming of adap:%d/FE:%d\n", 505 adap->dvb_adap.num, adap->fe->id); 506 507 /* kill the fetching thread */ 508 ret = kthread_stop(adap->thread); 509 return ret; 510} 511 512static int pt3_start_feed(struct dvb_demux_feed *feed) 513{ 514 struct pt3_adapter *adap; 515 516 if (signal_pending(current)) 517 return -EINTR; 518 519 adap = container_of(feed->demux, struct pt3_adapter, demux); 520 adap->num_feeds++; 521 if (adap->thread) 522 return 0; 523 if (adap->num_feeds != 1) { 524 dev_warn(adap->dvb_adap.device, 525 "%s: unmatched start/stop_feed in adap:%i/dmx:%i\n", 526 __func__, adap->dvb_adap.num, adap->dmxdev.dvbdev->id); 527 adap->num_feeds = 1; 528 } 529 530 return pt3_start_streaming(adap); 531 532} 533 534static int pt3_stop_feed(struct dvb_demux_feed *feed) 535{ 536 struct pt3_adapter *adap; 537 538 adap = container_of(feed->demux, struct pt3_adapter, demux); 539 540 adap->num_feeds--; 541 if (adap->num_feeds > 0 || !adap->thread) 542 return 0; 543 adap->num_feeds = 0; 544 545 return pt3_stop_streaming(adap); 546} 547 548 549static int pt3_alloc_adapter(struct pt3_board *pt3, int index) 550{ 551 int ret; 552 struct pt3_adapter *adap; 553 struct dvb_adapter *da; 554 555 adap = kzalloc(sizeof(*adap), GFP_KERNEL); 556 if (!adap) 557 return -ENOMEM; 558 559 pt3->adaps[index] = adap; 560 adap->adap_idx = index; 561 562 if (index == 0 || !one_adapter) { 563 ret = dvb_register_adapter(&adap->dvb_adap, "PT3 DVB", 564 THIS_MODULE, &pt3->pdev->dev, adapter_nr); 565 if (ret < 0) { 566 dev_err(&pt3->pdev->dev, 567 "failed to register adapter dev\n"); 568 goto err_mem; 569 } 570 da = &adap->dvb_adap; 571 } else 572 da = &pt3->adaps[0]->dvb_adap; 573 574 adap->dvb_adap.priv = pt3; 575 adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING; 576 adap->demux.priv = adap; 577 adap->demux.feednum = 256; 578 adap->demux.filternum = 256; 579 adap->demux.start_feed = pt3_start_feed; 580 adap->demux.stop_feed = pt3_stop_feed; 581 ret = dvb_dmx_init(&adap->demux); 582 if (ret < 0) { 583 dev_err(&pt3->pdev->dev, "failed to init dmx dev\n"); 584 goto err_adap; 585 } 586 587 adap->dmxdev.filternum = 256; 588 adap->dmxdev.demux = &adap->demux.dmx; 589 ret = dvb_dmxdev_init(&adap->dmxdev, da); 590 if (ret < 0) { 591 dev_err(&pt3->pdev->dev, "failed to init dmxdev\n"); 592 goto err_demux; 593 } 594 595 ret = pt3_alloc_dmabuf(adap); 596 if (ret) { 597 dev_err(&pt3->pdev->dev, "failed to alloc DMA buffers\n"); 598 goto err_dmabuf; 599 } 600 601 return 0; 602 603err_dmabuf: 604 pt3_free_dmabuf(adap); 605 dvb_dmxdev_release(&adap->dmxdev); 606err_demux: 607 dvb_dmx_release(&adap->demux); 608err_adap: 609 if (index == 0 || !one_adapter) 610 dvb_unregister_adapter(da); 611err_mem: 612 kfree(adap); 613 pt3->adaps[index] = NULL; 614 return ret; 615} 616 617static void pt3_cleanup_adapter(struct pt3_board *pt3, int index) 618{ 619 struct pt3_adapter *adap; 620 struct dmx_demux *dmx; 621 622 adap = pt3->adaps[index]; 623 if (adap == NULL) 624 return; 625 626 /* stop demux kthread */ 627 if (adap->thread) 628 pt3_stop_streaming(adap); 629 630 dmx = &adap->demux.dmx; 631 dmx->close(dmx); 632 if (adap->fe) { 633 adap->fe->callback = NULL; 634 if (adap->fe->frontend_priv) 635 dvb_unregister_frontend(adap->fe); 636 if (adap->i2c_tuner) { 637 module_put(adap->i2c_tuner->dev.driver->owner); 638 i2c_unregister_device(adap->i2c_tuner); 639 } 640 if (adap->i2c_demod) { 641 module_put(adap->i2c_demod->dev.driver->owner); 642 i2c_unregister_device(adap->i2c_demod); 643 } 644 } 645 pt3_free_dmabuf(adap); 646 dvb_dmxdev_release(&adap->dmxdev); 647 dvb_dmx_release(&adap->demux); 648 if (index == 0 || !one_adapter) 649 dvb_unregister_adapter(&adap->dvb_adap); 650 kfree(adap); 651 pt3->adaps[index] = NULL; 652} 653 654#ifdef CONFIG_PM_SLEEP 655 656static int pt3_suspend(struct device *dev) 657{ 658 struct pci_dev *pdev = to_pci_dev(dev); 659 struct pt3_board *pt3 = pci_get_drvdata(pdev); 660 int i; 661 struct pt3_adapter *adap; 662 663 for (i = 0; i < PT3_NUM_FE; i++) { 664 adap = pt3->adaps[i]; 665 if (adap->num_feeds > 0) 666 pt3_stop_dma(adap); 667 dvb_frontend_suspend(adap->fe); 668 pt3_free_dmabuf(adap); 669 } 670 671 pt3_lnb_ctrl(pt3, false); 672 pt3_set_tuner_power(pt3, false, false); 673 return 0; 674} 675 676static int pt3_resume(struct device *dev) 677{ 678 struct pci_dev *pdev = to_pci_dev(dev); 679 struct pt3_board *pt3 = pci_get_drvdata(pdev); 680 int i, ret; 681 struct pt3_adapter *adap; 682 683 ret = pt3_fe_init(pt3); 684 if (ret) 685 return ret; 686 687 if (pt3->lna_on_cnt > 0) 688 pt3_set_tuner_power(pt3, true, true); 689 if (pt3->lnb_on_cnt > 0) 690 pt3_lnb_ctrl(pt3, true); 691 692 for (i = 0; i < PT3_NUM_FE; i++) { 693 adap = pt3->adaps[i]; 694 dvb_frontend_resume(adap->fe); 695 ret = pt3_alloc_dmabuf(adap); 696 if (ret) { 697 dev_err(&pt3->pdev->dev, "failed to alloc DMA bufs\n"); 698 continue; 699 } 700 if (adap->num_feeds > 0) 701 pt3_start_dma(adap); 702 } 703 704 return 0; 705} 706 707#endif /* CONFIG_PM_SLEEP */ 708 709 710static void pt3_remove(struct pci_dev *pdev) 711{ 712 struct pt3_board *pt3; 713 int i; 714 715 pt3 = pci_get_drvdata(pdev); 716 for (i = PT3_NUM_FE - 1; i >= 0; i--) 717 pt3_cleanup_adapter(pt3, i); 718 i2c_del_adapter(&pt3->i2c_adap); 719 kfree(pt3->i2c_buf); 720 pci_iounmap(pt3->pdev, pt3->regs[0]); 721 pci_iounmap(pt3->pdev, pt3->regs[1]); 722 pci_release_regions(pdev); 723 pci_disable_device(pdev); 724 kfree(pt3); 725} 726 727static int pt3_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 728{ 729 u8 rev; 730 u32 ver; 731 int i, ret; 732 struct pt3_board *pt3; 733 struct i2c_adapter *i2c; 734 735 if (pci_read_config_byte(pdev, PCI_REVISION_ID, &rev) || rev != 1) 736 return -ENODEV; 737 738 ret = pci_enable_device(pdev); 739 if (ret < 0) 740 return -ENODEV; 741 pci_set_master(pdev); 742 743 ret = pci_request_regions(pdev, DRV_NAME); 744 if (ret < 0) 745 goto err_disable_device; 746 747 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); 748 if (ret == 0) 749 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); 750 else { 751 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); 752 if (ret == 0) 753 dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); 754 else { 755 dev_err(&pdev->dev, "Failed to set DMA mask\n"); 756 goto err_release_regions; 757 } 758 dev_info(&pdev->dev, "Use 32bit DMA\n"); 759 } 760 761 pt3 = kzalloc(sizeof(*pt3), GFP_KERNEL); 762 if (!pt3) { 763 ret = -ENOMEM; 764 goto err_release_regions; 765 } 766 pci_set_drvdata(pdev, pt3); 767 pt3->pdev = pdev; 768 mutex_init(&pt3->lock); 769 pt3->regs[0] = pci_ioremap_bar(pdev, 0); 770 pt3->regs[1] = pci_ioremap_bar(pdev, 2); 771 if (pt3->regs[0] == NULL || pt3->regs[1] == NULL) { 772 dev_err(&pdev->dev, "Failed to ioremap\n"); 773 ret = -ENOMEM; 774 goto err_kfree; 775 } 776 777 ver = ioread32(pt3->regs[0] + REG_VERSION); 778 if ((ver >> 16) != 0x0301) { 779 dev_warn(&pdev->dev, "PT%d, I/F-ver.:%d not supported\n", 780 ver >> 24, (ver & 0x00ff0000) >> 16); 781 ret = -ENODEV; 782 goto err_iounmap; 783 } 784 785 pt3->num_bufs = clamp_val(num_bufs, MIN_DATA_BUFS, MAX_DATA_BUFS); 786 787 pt3->i2c_buf = kmalloc(sizeof(*pt3->i2c_buf), GFP_KERNEL); 788 if (pt3->i2c_buf == NULL) { 789 ret = -ENOMEM; 790 goto err_iounmap; 791 } 792 i2c = &pt3->i2c_adap; 793 i2c->owner = THIS_MODULE; 794 i2c->algo = &pt3_i2c_algo; 795 i2c->algo_data = NULL; 796 i2c->dev.parent = &pdev->dev; 797 strlcpy(i2c->name, DRV_NAME, sizeof(i2c->name)); 798 i2c_set_adapdata(i2c, pt3); 799 ret = i2c_add_adapter(i2c); 800 if (ret < 0) { 801 dev_err(&pdev->dev, "Failed to add i2c adapter\n"); 802 goto err_i2cbuf; 803 } 804 805 for (i = 0; i < PT3_NUM_FE; i++) { 806 ret = pt3_alloc_adapter(pt3, i); 807 if (ret < 0) 808 break; 809 810 ret = pt3_attach_fe(pt3, i); 811 if (ret < 0) 812 break; 813 } 814 if (i < PT3_NUM_FE) { 815 dev_err(&pdev->dev, "Failed to create FE%d\n", i); 816 goto err_cleanup_adapters; 817 } 818 819 ret = pt3_fe_init(pt3); 820 if (ret < 0) { 821 dev_err(&pdev->dev, "Failed to init frontends\n"); 822 i = PT3_NUM_FE - 1; 823 goto err_cleanup_adapters; 824 } 825 826 dev_info(&pdev->dev, 827 "successfully init'ed PT%d (fw:0x%02x, I/F:0x%02x)\n", 828 ver >> 24, (ver >> 8) & 0xff, (ver >> 16) & 0xff); 829 return 0; 830 831err_cleanup_adapters: 832 while (i >= 0) 833 pt3_cleanup_adapter(pt3, i--); 834 i2c_del_adapter(i2c); 835err_i2cbuf: 836 kfree(pt3->i2c_buf); 837err_iounmap: 838 if (pt3->regs[0]) 839 pci_iounmap(pdev, pt3->regs[0]); 840 if (pt3->regs[1]) 841 pci_iounmap(pdev, pt3->regs[1]); 842err_kfree: 843 kfree(pt3); 844err_release_regions: 845 pci_release_regions(pdev); 846err_disable_device: 847 pci_disable_device(pdev); 848 return ret; 849 850} 851 852static const struct pci_device_id pt3_id_table[] = { 853 { PCI_DEVICE_SUB(0x1172, 0x4c15, 0xee8d, 0x0368) }, 854 { }, 855}; 856MODULE_DEVICE_TABLE(pci, pt3_id_table); 857 858static SIMPLE_DEV_PM_OPS(pt3_pm_ops, pt3_suspend, pt3_resume); 859 860static struct pci_driver pt3_driver = { 861 .name = DRV_NAME, 862 .probe = pt3_probe, 863 .remove = pt3_remove, 864 .id_table = pt3_id_table, 865 866 .driver.pm = &pt3_pm_ops, 867}; 868 869module_pci_driver(pt3_driver); 870 871MODULE_DESCRIPTION("Earthsoft PT3 Driver"); 872MODULE_AUTHOR("Akihiro TSUKADA"); 873MODULE_LICENSE("GPL"); 874