1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* ------------------------------------------------------------------------- 3 * Copyright (C) 2014-2016, Intel Corporation 4 * 5 * ------------------------------------------------------------------------- 6 */ 7 8 #include <linux/module.h> 9 #include <linux/nfc.h> 10 #include <linux/i2c.h> 11 #include <linux/delay.h> 12 #include <linux/firmware.h> 13 #include <net/nfc/nci_core.h> 14 15 #include "fdp.h" 16 17 #define FDP_OTP_PATCH_NAME "otp.bin" 18 #define FDP_RAM_PATCH_NAME "ram.bin" 19 #define FDP_FW_HEADER_SIZE 576 20 #define FDP_FW_UPDATE_SLEEP 1000 21 22 #define NCI_GET_VERSION_TIMEOUT 8000 23 #define NCI_PATCH_REQUEST_TIMEOUT 8000 24 #define FDP_PATCH_CONN_DEST 0xC2 25 #define FDP_PATCH_CONN_PARAM_TYPE 0xA0 26 27 #define NCI_PATCH_TYPE_RAM 0x00 28 #define NCI_PATCH_TYPE_OTP 0x01 29 #define NCI_PATCH_TYPE_EOT 0xFF 30 31 #define NCI_PARAM_ID_FW_RAM_VERSION 0xA0 32 #define NCI_PARAM_ID_FW_OTP_VERSION 0xA1 33 #define NCI_PARAM_ID_OTP_LIMITED_VERSION 0xC5 34 #define NCI_PARAM_ID_KEY_INDEX_ID 0xC6 35 36 #define NCI_GID_PROP 0x0F 37 #define NCI_OP_PROP_PATCH_OID 0x08 38 #define NCI_OP_PROP_SET_PDATA_OID 0x23 39 40 struct fdp_nci_info { 41 struct nfc_phy_ops *phy_ops; 42 struct fdp_i2c_phy *phy; 43 struct nci_dev *ndev; 44 45 const struct firmware *otp_patch; 46 const struct firmware *ram_patch; 47 u32 otp_patch_version; 48 u32 ram_patch_version; 49 50 u32 otp_version; 51 u32 ram_version; 52 u32 limited_otp_version; 53 u8 key_index; 54 55 u8 *fw_vsc_cfg; 56 u8 clock_type; 57 u32 clock_freq; 58 59 atomic_t data_pkt_counter; 60 void (*data_pkt_counter_cb)(struct nci_dev *ndev); 61 u8 setup_patch_sent; 62 u8 setup_patch_ntf; 63 u8 setup_patch_status; 64 u8 setup_reset_ntf; 65 wait_queue_head_t setup_wq; 66 }; 67 68 static u8 nci_core_get_config_otp_ram_version[5] = { 69 0x04, 70 NCI_PARAM_ID_FW_RAM_VERSION, 71 NCI_PARAM_ID_FW_OTP_VERSION, 72 NCI_PARAM_ID_OTP_LIMITED_VERSION, 73 NCI_PARAM_ID_KEY_INDEX_ID 74 }; 75 76 struct nci_core_get_config_rsp { 77 u8 status; 78 u8 count; 79 u8 data[]; 80 }; 81 82 static int fdp_nci_create_conn(struct nci_dev *ndev) 83 { 84 struct fdp_nci_info *info = nci_get_drvdata(ndev); 85 struct core_conn_create_dest_spec_params param; 86 int r; 87 88 /* proprietary destination specific paramerer without value */ 89 param.type = FDP_PATCH_CONN_PARAM_TYPE; 90 param.length = 0x00; 91 92 r = nci_core_conn_create(info->ndev, FDP_PATCH_CONN_DEST, 1, 93 sizeof(param), ¶m); 94 if (r) 95 return r; 96 97 return nci_get_conn_info_by_dest_type_params(ndev, 98 FDP_PATCH_CONN_DEST, NULL); 99 } 100 101 static inline int fdp_nci_get_versions(struct nci_dev *ndev) 102 { 103 return nci_core_cmd(ndev, NCI_OP_CORE_GET_CONFIG_CMD, 104 sizeof(nci_core_get_config_otp_ram_version), 105 (__u8 *) &nci_core_get_config_otp_ram_version); 106 } 107 108 static inline int fdp_nci_patch_cmd(struct nci_dev *ndev, u8 type) 109 { 110 return nci_prop_cmd(ndev, NCI_OP_PROP_PATCH_OID, sizeof(type), &type); 111 } 112 113 static inline int fdp_nci_set_production_data(struct nci_dev *ndev, u8 len, 114 char *data) 115 { 116 return nci_prop_cmd(ndev, NCI_OP_PROP_SET_PDATA_OID, len, data); 117 } 118 119 static int fdp_nci_set_clock(struct nci_dev *ndev, u8 clock_type, 120 u32 clock_freq) 121 { 122 u32 fc = 13560; 123 u32 nd, num, delta; 124 char data[9]; 125 126 nd = (24 * fc) / clock_freq; 127 delta = 24 * fc - nd * clock_freq; 128 num = (32768 * delta) / clock_freq; 129 130 data[0] = 0x00; 131 data[1] = 0x00; 132 data[2] = 0x00; 133 134 data[3] = 0x10; 135 data[4] = 0x04; 136 data[5] = num & 0xFF; 137 data[6] = (num >> 8) & 0xff; 138 data[7] = nd; 139 data[8] = clock_type; 140 141 return fdp_nci_set_production_data(ndev, 9, data); 142 } 143 144 static void fdp_nci_send_patch_cb(struct nci_dev *ndev) 145 { 146 struct fdp_nci_info *info = nci_get_drvdata(ndev); 147 148 info->setup_patch_sent = 1; 149 wake_up(&info->setup_wq); 150 } 151 152 /** 153 * Register a packet sent counter and a callback 154 * 155 * We have no other way of knowing when all firmware packets were sent out 156 * on the i2c bus. We need to know that in order to close the connection and 157 * send the patch end message. 158 */ 159 static void fdp_nci_set_data_pkt_counter(struct nci_dev *ndev, 160 void (*cb)(struct nci_dev *ndev), int count) 161 { 162 struct fdp_nci_info *info = nci_get_drvdata(ndev); 163 struct device *dev = &info->phy->i2c_dev->dev; 164 165 dev_dbg(dev, "NCI data pkt counter %d\n", count); 166 atomic_set(&info->data_pkt_counter, count); 167 info->data_pkt_counter_cb = cb; 168 } 169 170 /** 171 * The device is expecting a stream of packets. All packets need to 172 * have the PBF flag set to 0x0 (last packet) even if the firmware 173 * file is segmented and there are multiple packets. If we give the 174 * whole firmware to nci_send_data it will segment it and it will set 175 * the PBF flag to 0x01 so we need to do the segmentation here. 176 * 177 * The firmware will be analyzed and applied when we send NCI_OP_PROP_PATCH_CMD 178 * command with NCI_PATCH_TYPE_EOT parameter. The device will send a 179 * NFCC_PATCH_NTF packaet and a NCI_OP_CORE_RESET_NTF packet. 180 */ 181 static int fdp_nci_send_patch(struct nci_dev *ndev, u8 conn_id, u8 type) 182 { 183 struct fdp_nci_info *info = nci_get_drvdata(ndev); 184 const struct firmware *fw; 185 struct sk_buff *skb; 186 unsigned long len; 187 int max_size, payload_size; 188 int rc = 0; 189 190 if ((type == NCI_PATCH_TYPE_OTP && !info->otp_patch) || 191 (type == NCI_PATCH_TYPE_RAM && !info->ram_patch)) 192 return -EINVAL; 193 194 if (type == NCI_PATCH_TYPE_OTP) 195 fw = info->otp_patch; 196 else 197 fw = info->ram_patch; 198 199 max_size = nci_conn_max_data_pkt_payload_size(ndev, conn_id); 200 if (max_size <= 0) 201 return -EINVAL; 202 203 len = fw->size; 204 205 fdp_nci_set_data_pkt_counter(ndev, fdp_nci_send_patch_cb, 206 DIV_ROUND_UP(fw->size, max_size)); 207 208 while (len) { 209 210 payload_size = min_t(unsigned long, max_size, len); 211 212 skb = nci_skb_alloc(ndev, (NCI_CTRL_HDR_SIZE + payload_size), 213 GFP_KERNEL); 214 if (!skb) { 215 fdp_nci_set_data_pkt_counter(ndev, NULL, 0); 216 return -ENOMEM; 217 } 218 219 220 skb_reserve(skb, NCI_CTRL_HDR_SIZE); 221 222 skb_put_data(skb, fw->data + (fw->size - len), payload_size); 223 224 rc = nci_send_data(ndev, conn_id, skb); 225 226 if (rc) { 227 fdp_nci_set_data_pkt_counter(ndev, NULL, 0); 228 return rc; 229 } 230 231 len -= payload_size; 232 } 233 234 return rc; 235 } 236 237 static int fdp_nci_open(struct nci_dev *ndev) 238 { 239 int r; 240 struct fdp_nci_info *info = nci_get_drvdata(ndev); 241 struct device *dev = &info->phy->i2c_dev->dev; 242 243 dev_dbg(dev, "%s\n", __func__); 244 245 r = info->phy_ops->enable(info->phy); 246 247 return r; 248 } 249 250 static int fdp_nci_close(struct nci_dev *ndev) 251 { 252 struct fdp_nci_info *info = nci_get_drvdata(ndev); 253 struct device *dev = &info->phy->i2c_dev->dev; 254 255 dev_dbg(dev, "%s\n", __func__); 256 return 0; 257 } 258 259 static int fdp_nci_send(struct nci_dev *ndev, struct sk_buff *skb) 260 { 261 struct fdp_nci_info *info = nci_get_drvdata(ndev); 262 struct device *dev = &info->phy->i2c_dev->dev; 263 264 dev_dbg(dev, "%s\n", __func__); 265 266 if (atomic_dec_and_test(&info->data_pkt_counter)) 267 info->data_pkt_counter_cb(ndev); 268 269 return info->phy_ops->write(info->phy, skb); 270 } 271 272 int fdp_nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb) 273 { 274 struct fdp_nci_info *info = nci_get_drvdata(ndev); 275 struct device *dev = &info->phy->i2c_dev->dev; 276 277 dev_dbg(dev, "%s\n", __func__); 278 return nci_recv_frame(ndev, skb); 279 } 280 EXPORT_SYMBOL(fdp_nci_recv_frame); 281 282 static int fdp_nci_request_firmware(struct nci_dev *ndev) 283 { 284 struct fdp_nci_info *info = nci_get_drvdata(ndev); 285 struct device *dev = &info->phy->i2c_dev->dev; 286 u8 *data; 287 int r; 288 289 r = request_firmware(&info->ram_patch, FDP_RAM_PATCH_NAME, dev); 290 if (r < 0) { 291 nfc_err(dev, "RAM patch request error\n"); 292 goto error; 293 } 294 295 data = (u8 *) info->ram_patch->data; 296 info->ram_patch_version = 297 data[FDP_FW_HEADER_SIZE] | 298 (data[FDP_FW_HEADER_SIZE + 1] << 8) | 299 (data[FDP_FW_HEADER_SIZE + 2] << 16) | 300 (data[FDP_FW_HEADER_SIZE + 3] << 24); 301 302 dev_dbg(dev, "RAM patch version: %d, size: %d\n", 303 info->ram_patch_version, (int) info->ram_patch->size); 304 305 306 r = request_firmware(&info->otp_patch, FDP_OTP_PATCH_NAME, dev); 307 if (r < 0) { 308 nfc_err(dev, "OTP patch request error\n"); 309 goto out; 310 } 311 312 data = (u8 *) info->otp_patch->data; 313 info->otp_patch_version = 314 data[FDP_FW_HEADER_SIZE] | 315 (data[FDP_FW_HEADER_SIZE + 1] << 8) | 316 (data[FDP_FW_HEADER_SIZE+2] << 16) | 317 (data[FDP_FW_HEADER_SIZE+3] << 24); 318 319 dev_dbg(dev, "OTP patch version: %d, size: %d\n", 320 info->otp_patch_version, (int) info->otp_patch->size); 321 out: 322 return 0; 323 error: 324 return r; 325 } 326 327 static void fdp_nci_release_firmware(struct nci_dev *ndev) 328 { 329 struct fdp_nci_info *info = nci_get_drvdata(ndev); 330 331 if (info->otp_patch) { 332 release_firmware(info->otp_patch); 333 info->otp_patch = NULL; 334 } 335 336 if (info->ram_patch) { 337 release_firmware(info->ram_patch); 338 info->ram_patch = NULL; 339 } 340 } 341 342 static int fdp_nci_patch_otp(struct nci_dev *ndev) 343 { 344 struct fdp_nci_info *info = nci_get_drvdata(ndev); 345 struct device *dev = &info->phy->i2c_dev->dev; 346 int conn_id; 347 int r = 0; 348 349 if (info->otp_version >= info->otp_patch_version) 350 goto out; 351 352 info->setup_patch_sent = 0; 353 info->setup_reset_ntf = 0; 354 info->setup_patch_ntf = 0; 355 356 /* Patch init request */ 357 r = fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_OTP); 358 if (r) 359 goto out; 360 361 /* Patch data connection creation */ 362 conn_id = fdp_nci_create_conn(ndev); 363 if (conn_id < 0) { 364 r = conn_id; 365 goto out; 366 } 367 368 /* Send the patch over the data connection */ 369 r = fdp_nci_send_patch(ndev, conn_id, NCI_PATCH_TYPE_OTP); 370 if (r) 371 goto out; 372 373 /* Wait for all the packets to be send over i2c */ 374 wait_event_interruptible(info->setup_wq, 375 info->setup_patch_sent == 1); 376 377 /* make sure that the NFCC processed the last data packet */ 378 msleep(FDP_FW_UPDATE_SLEEP); 379 380 /* Close the data connection */ 381 r = nci_core_conn_close(info->ndev, conn_id); 382 if (r) 383 goto out; 384 385 /* Patch finish message */ 386 if (fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_EOT)) { 387 nfc_err(dev, "OTP patch error 0x%x\n", r); 388 r = -EINVAL; 389 goto out; 390 } 391 392 /* If the patch notification didn't arrive yet, wait for it */ 393 wait_event_interruptible(info->setup_wq, info->setup_patch_ntf); 394 395 /* Check if the patching was successful */ 396 r = info->setup_patch_status; 397 if (r) { 398 nfc_err(dev, "OTP patch error 0x%x\n", r); 399 r = -EINVAL; 400 goto out; 401 } 402 403 /* 404 * We need to wait for the reset notification before we 405 * can continue 406 */ 407 wait_event_interruptible(info->setup_wq, info->setup_reset_ntf); 408 409 out: 410 return r; 411 } 412 413 static int fdp_nci_patch_ram(struct nci_dev *ndev) 414 { 415 struct fdp_nci_info *info = nci_get_drvdata(ndev); 416 struct device *dev = &info->phy->i2c_dev->dev; 417 int conn_id; 418 int r = 0; 419 420 if (info->ram_version >= info->ram_patch_version) 421 goto out; 422 423 info->setup_patch_sent = 0; 424 info->setup_reset_ntf = 0; 425 info->setup_patch_ntf = 0; 426 427 /* Patch init request */ 428 r = fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_RAM); 429 if (r) 430 goto out; 431 432 /* Patch data connection creation */ 433 conn_id = fdp_nci_create_conn(ndev); 434 if (conn_id < 0) { 435 r = conn_id; 436 goto out; 437 } 438 439 /* Send the patch over the data connection */ 440 r = fdp_nci_send_patch(ndev, conn_id, NCI_PATCH_TYPE_RAM); 441 if (r) 442 goto out; 443 444 /* Wait for all the packets to be send over i2c */ 445 wait_event_interruptible(info->setup_wq, 446 info->setup_patch_sent == 1); 447 448 /* make sure that the NFCC processed the last data packet */ 449 msleep(FDP_FW_UPDATE_SLEEP); 450 451 /* Close the data connection */ 452 r = nci_core_conn_close(info->ndev, conn_id); 453 if (r) 454 goto out; 455 456 /* Patch finish message */ 457 if (fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_EOT)) { 458 nfc_err(dev, "RAM patch error 0x%x\n", r); 459 r = -EINVAL; 460 goto out; 461 } 462 463 /* If the patch notification didn't arrive yet, wait for it */ 464 wait_event_interruptible(info->setup_wq, info->setup_patch_ntf); 465 466 /* Check if the patching was successful */ 467 r = info->setup_patch_status; 468 if (r) { 469 nfc_err(dev, "RAM patch error 0x%x\n", r); 470 r = -EINVAL; 471 goto out; 472 } 473 474 /* 475 * We need to wait for the reset notification before we 476 * can continue 477 */ 478 wait_event_interruptible(info->setup_wq, info->setup_reset_ntf); 479 480 out: 481 return r; 482 } 483 484 static int fdp_nci_setup(struct nci_dev *ndev) 485 { 486 /* Format: total length followed by an NCI packet */ 487 struct fdp_nci_info *info = nci_get_drvdata(ndev); 488 struct device *dev = &info->phy->i2c_dev->dev; 489 int r; 490 u8 patched = 0; 491 492 dev_dbg(dev, "%s\n", __func__); 493 494 r = nci_core_init(ndev); 495 if (r) 496 goto error; 497 498 /* Get RAM and OTP version */ 499 r = fdp_nci_get_versions(ndev); 500 if (r) 501 goto error; 502 503 /* Load firmware from disk */ 504 r = fdp_nci_request_firmware(ndev); 505 if (r) 506 goto error; 507 508 /* Update OTP */ 509 if (info->otp_version < info->otp_patch_version) { 510 r = fdp_nci_patch_otp(ndev); 511 if (r) 512 goto error; 513 patched = 1; 514 } 515 516 /* Update RAM */ 517 if (info->ram_version < info->ram_patch_version) { 518 r = fdp_nci_patch_ram(ndev); 519 if (r) 520 goto error; 521 patched = 1; 522 } 523 524 /* Release the firmware buffers */ 525 fdp_nci_release_firmware(ndev); 526 527 /* If a patch was applied the new version is checked */ 528 if (patched) { 529 r = nci_core_init(ndev); 530 if (r) 531 goto error; 532 533 r = fdp_nci_get_versions(ndev); 534 if (r) 535 goto error; 536 537 if (info->otp_version != info->otp_patch_version || 538 info->ram_version != info->ram_patch_version) { 539 nfc_err(dev, "Firmware update failed"); 540 r = -EINVAL; 541 goto error; 542 } 543 } 544 545 /* 546 * We initialized the devices but the NFC subsystem expects 547 * it to not be initialized. 548 */ 549 return nci_core_reset(ndev); 550 551 error: 552 fdp_nci_release_firmware(ndev); 553 nfc_err(dev, "Setup error %d\n", r); 554 return r; 555 } 556 557 static int fdp_nci_post_setup(struct nci_dev *ndev) 558 { 559 struct fdp_nci_info *info = nci_get_drvdata(ndev); 560 struct device *dev = &info->phy->i2c_dev->dev; 561 int r; 562 563 /* Check if the device has VSC */ 564 if (info->fw_vsc_cfg && info->fw_vsc_cfg[0]) { 565 566 /* Set the vendor specific configuration */ 567 r = fdp_nci_set_production_data(ndev, info->fw_vsc_cfg[3], 568 &info->fw_vsc_cfg[4]); 569 if (r) { 570 nfc_err(dev, "Vendor specific config set error %d\n", 571 r); 572 return r; 573 } 574 } 575 576 /* Set clock type and frequency */ 577 r = fdp_nci_set_clock(ndev, info->clock_type, info->clock_freq); 578 if (r) { 579 nfc_err(dev, "Clock set error %d\n", r); 580 return r; 581 } 582 583 /* 584 * In order to apply the VSC FDP needs a reset 585 */ 586 r = nci_core_reset(ndev); 587 if (r) 588 return r; 589 590 /** 591 * The nci core was initialized when post setup was called 592 * so we leave it like that 593 */ 594 return nci_core_init(ndev); 595 } 596 597 static int fdp_nci_core_reset_ntf_packet(struct nci_dev *ndev, 598 struct sk_buff *skb) 599 { 600 struct fdp_nci_info *info = nci_get_drvdata(ndev); 601 struct device *dev = &info->phy->i2c_dev->dev; 602 603 dev_dbg(dev, "%s\n", __func__); 604 info->setup_reset_ntf = 1; 605 wake_up(&info->setup_wq); 606 607 return 0; 608 } 609 610 static int fdp_nci_prop_patch_ntf_packet(struct nci_dev *ndev, 611 struct sk_buff *skb) 612 { 613 struct fdp_nci_info *info = nci_get_drvdata(ndev); 614 struct device *dev = &info->phy->i2c_dev->dev; 615 616 dev_dbg(dev, "%s\n", __func__); 617 info->setup_patch_ntf = 1; 618 info->setup_patch_status = skb->data[0]; 619 wake_up(&info->setup_wq); 620 621 return 0; 622 } 623 624 static int fdp_nci_prop_patch_rsp_packet(struct nci_dev *ndev, 625 struct sk_buff *skb) 626 { 627 struct fdp_nci_info *info = nci_get_drvdata(ndev); 628 struct device *dev = &info->phy->i2c_dev->dev; 629 u8 status = skb->data[0]; 630 631 dev_dbg(dev, "%s: status 0x%x\n", __func__, status); 632 nci_req_complete(ndev, status); 633 634 return 0; 635 } 636 637 static int fdp_nci_prop_set_production_data_rsp_packet(struct nci_dev *ndev, 638 struct sk_buff *skb) 639 { 640 struct fdp_nci_info *info = nci_get_drvdata(ndev); 641 struct device *dev = &info->phy->i2c_dev->dev; 642 u8 status = skb->data[0]; 643 644 dev_dbg(dev, "%s: status 0x%x\n", __func__, status); 645 nci_req_complete(ndev, status); 646 647 return 0; 648 } 649 650 static int fdp_nci_core_get_config_rsp_packet(struct nci_dev *ndev, 651 struct sk_buff *skb) 652 { 653 struct fdp_nci_info *info = nci_get_drvdata(ndev); 654 struct device *dev = &info->phy->i2c_dev->dev; 655 struct nci_core_get_config_rsp *rsp = (void *) skb->data; 656 u8 i, *p; 657 658 if (rsp->status == NCI_STATUS_OK) { 659 660 p = rsp->data; 661 for (i = 0; i < 4; i++) { 662 663 switch (*p++) { 664 case NCI_PARAM_ID_FW_RAM_VERSION: 665 p++; 666 info->ram_version = le32_to_cpup((__le32 *) p); 667 p += 4; 668 break; 669 case NCI_PARAM_ID_FW_OTP_VERSION: 670 p++; 671 info->otp_version = le32_to_cpup((__le32 *) p); 672 p += 4; 673 break; 674 case NCI_PARAM_ID_OTP_LIMITED_VERSION: 675 p++; 676 info->otp_version = le32_to_cpup((__le32 *) p); 677 p += 4; 678 break; 679 case NCI_PARAM_ID_KEY_INDEX_ID: 680 p++; 681 info->key_index = *p++; 682 } 683 } 684 } 685 686 dev_dbg(dev, "OTP version %d\n", info->otp_version); 687 dev_dbg(dev, "RAM version %d\n", info->ram_version); 688 dev_dbg(dev, "key index %d\n", info->key_index); 689 dev_dbg(dev, "%s: status 0x%x\n", __func__, rsp->status); 690 691 nci_req_complete(ndev, rsp->status); 692 693 return 0; 694 } 695 696 static struct nci_driver_ops fdp_core_ops[] = { 697 { 698 .opcode = NCI_OP_CORE_GET_CONFIG_RSP, 699 .rsp = fdp_nci_core_get_config_rsp_packet, 700 }, 701 { 702 .opcode = NCI_OP_CORE_RESET_NTF, 703 .ntf = fdp_nci_core_reset_ntf_packet, 704 }, 705 }; 706 707 static struct nci_driver_ops fdp_prop_ops[] = { 708 { 709 .opcode = nci_opcode_pack(NCI_GID_PROP, NCI_OP_PROP_PATCH_OID), 710 .rsp = fdp_nci_prop_patch_rsp_packet, 711 .ntf = fdp_nci_prop_patch_ntf_packet, 712 }, 713 { 714 .opcode = nci_opcode_pack(NCI_GID_PROP, 715 NCI_OP_PROP_SET_PDATA_OID), 716 .rsp = fdp_nci_prop_set_production_data_rsp_packet, 717 }, 718 }; 719 720 static struct nci_ops nci_ops = { 721 .open = fdp_nci_open, 722 .close = fdp_nci_close, 723 .send = fdp_nci_send, 724 .setup = fdp_nci_setup, 725 .post_setup = fdp_nci_post_setup, 726 .prop_ops = fdp_prop_ops, 727 .n_prop_ops = ARRAY_SIZE(fdp_prop_ops), 728 .core_ops = fdp_core_ops, 729 .n_core_ops = ARRAY_SIZE(fdp_core_ops), 730 }; 731 732 int fdp_nci_probe(struct fdp_i2c_phy *phy, struct nfc_phy_ops *phy_ops, 733 struct nci_dev **ndevp, int tx_headroom, 734 int tx_tailroom, u8 clock_type, u32 clock_freq, 735 u8 *fw_vsc_cfg) 736 { 737 struct device *dev = &phy->i2c_dev->dev; 738 struct fdp_nci_info *info; 739 struct nci_dev *ndev; 740 u32 protocols; 741 int r; 742 743 info = devm_kzalloc(dev, sizeof(struct fdp_nci_info), GFP_KERNEL); 744 if (!info) 745 return -ENOMEM; 746 747 info->phy = phy; 748 info->phy_ops = phy_ops; 749 info->clock_type = clock_type; 750 info->clock_freq = clock_freq; 751 info->fw_vsc_cfg = fw_vsc_cfg; 752 753 init_waitqueue_head(&info->setup_wq); 754 755 protocols = NFC_PROTO_JEWEL_MASK | 756 NFC_PROTO_MIFARE_MASK | 757 NFC_PROTO_FELICA_MASK | 758 NFC_PROTO_ISO14443_MASK | 759 NFC_PROTO_ISO14443_B_MASK | 760 NFC_PROTO_NFC_DEP_MASK | 761 NFC_PROTO_ISO15693_MASK; 762 763 ndev = nci_allocate_device(&nci_ops, protocols, tx_headroom, 764 tx_tailroom); 765 if (!ndev) { 766 nfc_err(dev, "Cannot allocate nfc ndev\n"); 767 return -ENOMEM; 768 } 769 770 r = nci_register_device(ndev); 771 if (r) 772 goto err_regdev; 773 774 *ndevp = ndev; 775 info->ndev = ndev; 776 777 nci_set_drvdata(ndev, info); 778 779 return 0; 780 781 err_regdev: 782 nci_free_device(ndev); 783 return r; 784 } 785 EXPORT_SYMBOL(fdp_nci_probe); 786 787 void fdp_nci_remove(struct nci_dev *ndev) 788 { 789 struct fdp_nci_info *info = nci_get_drvdata(ndev); 790 struct device *dev = &info->phy->i2c_dev->dev; 791 792 dev_dbg(dev, "%s\n", __func__); 793 794 nci_unregister_device(ndev); 795 nci_free_device(ndev); 796 } 797 EXPORT_SYMBOL(fdp_nci_remove); 798 799 MODULE_LICENSE("GPL"); 800 MODULE_DESCRIPTION("NFC NCI driver for Intel Fields Peak NFC controller"); 801 MODULE_AUTHOR("Robert Dolca <robert.dolca@intel.com>"); 802