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1 | /* ------------------------------------------------------------------------- |
2 | * Copyright (C) 2014-2016, Intel Corporation | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * ------------------------------------------------------------------------- | |
14 | */ | |
15 | ||
16 | #include <linux/module.h> | |
17 | #include <linux/nfc.h> | |
18 | #include <linux/i2c.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/firmware.h> | |
21 | #include <net/nfc/nci_core.h> | |
22 | ||
23 | #include "fdp.h" | |
24 | ||
25 | #define FDP_OTP_PATCH_NAME "otp.bin" | |
26 | #define FDP_RAM_PATCH_NAME "ram.bin" | |
27 | #define FDP_FW_HEADER_SIZE 576 | |
28 | #define FDP_FW_UPDATE_SLEEP 1000 | |
29 | ||
30 | #define NCI_GET_VERSION_TIMEOUT 8000 | |
31 | #define NCI_PATCH_REQUEST_TIMEOUT 8000 | |
32 | #define FDP_PATCH_CONN_DEST 0xC2 | |
33 | #define FDP_PATCH_CONN_PARAM_TYPE 0xA0 | |
34 | ||
35 | #define NCI_PATCH_TYPE_RAM 0x00 | |
36 | #define NCI_PATCH_TYPE_OTP 0x01 | |
37 | #define NCI_PATCH_TYPE_EOT 0xFF | |
38 | ||
39 | #define NCI_PARAM_ID_FW_RAM_VERSION 0xA0 | |
40 | #define NCI_PARAM_ID_FW_OTP_VERSION 0xA1 | |
41 | #define NCI_PARAM_ID_OTP_LIMITED_VERSION 0xC5 | |
42 | #define NCI_PARAM_ID_KEY_INDEX_ID 0xC6 | |
43 | ||
44 | #define NCI_GID_PROP 0x0F | |
45 | #define NCI_OP_PROP_PATCH_OID 0x08 | |
46 | #define NCI_OP_PROP_SET_PDATA_OID 0x23 | |
47 | ||
48 | struct fdp_nci_info { | |
49 | struct nfc_phy_ops *phy_ops; | |
50 | struct fdp_i2c_phy *phy; | |
51 | struct nci_dev *ndev; | |
52 | ||
53 | const struct firmware *otp_patch; | |
54 | const struct firmware *ram_patch; | |
55 | u32 otp_patch_version; | |
56 | u32 ram_patch_version; | |
57 | ||
58 | u32 otp_version; | |
59 | u32 ram_version; | |
60 | u32 limited_otp_version; | |
61 | u8 key_index; | |
62 | ||
63 | u8 *fw_vsc_cfg; | |
64 | u8 clock_type; | |
65 | u32 clock_freq; | |
66 | ||
67 | atomic_t data_pkt_counter; | |
68 | void (*data_pkt_counter_cb)(struct nci_dev *ndev); | |
69 | u8 setup_patch_sent; | |
70 | u8 setup_patch_ntf; | |
71 | u8 setup_patch_status; | |
72 | u8 setup_reset_ntf; | |
73 | wait_queue_head_t setup_wq; | |
74 | }; | |
75 | ||
76 | static u8 nci_core_get_config_otp_ram_version[5] = { | |
77 | 0x04, | |
78 | NCI_PARAM_ID_FW_RAM_VERSION, | |
79 | NCI_PARAM_ID_FW_OTP_VERSION, | |
80 | NCI_PARAM_ID_OTP_LIMITED_VERSION, | |
81 | NCI_PARAM_ID_KEY_INDEX_ID | |
82 | }; | |
83 | ||
84 | struct nci_core_get_config_rsp { | |
85 | u8 status; | |
86 | u8 count; | |
87 | u8 data[0]; | |
88 | }; | |
89 | ||
90 | static int fdp_nci_create_conn(struct nci_dev *ndev) | |
91 | { | |
92 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
93 | struct core_conn_create_dest_spec_params param; | |
94 | int r; | |
95 | ||
96 | /* proprietary destination specific paramerer without value */ | |
97 | param.type = FDP_PATCH_CONN_PARAM_TYPE; | |
98 | param.length = 0x00; | |
99 | ||
100 | r = nci_core_conn_create(info->ndev, FDP_PATCH_CONN_DEST, 1, | |
101 | sizeof(param), ¶m); | |
102 | if (r) | |
103 | return r; | |
104 | ||
9b8d1a4c CR |
105 | return nci_get_conn_info_by_dest_type_params(ndev, |
106 | FDP_PATCH_CONN_DEST, NULL); | |
a06347c0 RD |
107 | } |
108 | ||
109 | static inline int fdp_nci_get_versions(struct nci_dev *ndev) | |
110 | { | |
111 | return nci_core_cmd(ndev, NCI_OP_CORE_GET_CONFIG_CMD, | |
112 | sizeof(nci_core_get_config_otp_ram_version), | |
113 | (__u8 *) &nci_core_get_config_otp_ram_version); | |
114 | } | |
115 | ||
116 | static inline int fdp_nci_patch_cmd(struct nci_dev *ndev, u8 type) | |
117 | { | |
118 | return nci_prop_cmd(ndev, NCI_OP_PROP_PATCH_OID, sizeof(type), &type); | |
119 | } | |
120 | ||
121 | static inline int fdp_nci_set_production_data(struct nci_dev *ndev, u8 len, | |
122 | char *data) | |
123 | { | |
124 | return nci_prop_cmd(ndev, NCI_OP_PROP_SET_PDATA_OID, len, data); | |
125 | } | |
126 | ||
127 | static int fdp_nci_set_clock(struct nci_dev *ndev, u8 clock_type, | |
128 | u32 clock_freq) | |
129 | { | |
130 | u32 fc = 13560; | |
131 | u32 nd, num, delta; | |
132 | char data[9]; | |
133 | ||
134 | nd = (24 * fc) / clock_freq; | |
135 | delta = 24 * fc - nd * clock_freq; | |
136 | num = (32768 * delta) / clock_freq; | |
137 | ||
138 | data[0] = 0x00; | |
139 | data[1] = 0x00; | |
140 | data[2] = 0x00; | |
141 | ||
142 | data[3] = 0x10; | |
143 | data[4] = 0x04; | |
144 | data[5] = num & 0xFF; | |
145 | data[6] = (num >> 8) & 0xff; | |
146 | data[7] = nd; | |
147 | data[8] = clock_type; | |
148 | ||
149 | return fdp_nci_set_production_data(ndev, 9, data); | |
150 | } | |
151 | ||
152 | static void fdp_nci_send_patch_cb(struct nci_dev *ndev) | |
153 | { | |
154 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
155 | ||
156 | info->setup_patch_sent = 1; | |
157 | wake_up(&info->setup_wq); | |
158 | } | |
159 | ||
160 | /** | |
161 | * Register a packet sent counter and a callback | |
162 | * | |
163 | * We have no other way of knowing when all firmware packets were sent out | |
164 | * on the i2c bus. We need to know that in order to close the connection and | |
165 | * send the patch end message. | |
166 | */ | |
167 | static void fdp_nci_set_data_pkt_counter(struct nci_dev *ndev, | |
168 | void (*cb)(struct nci_dev *ndev), int count) | |
169 | { | |
170 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
171 | struct device *dev = &info->phy->i2c_dev->dev; | |
172 | ||
173 | dev_dbg(dev, "NCI data pkt counter %d\n", count); | |
174 | atomic_set(&info->data_pkt_counter, count); | |
175 | info->data_pkt_counter_cb = cb; | |
176 | } | |
177 | ||
178 | /** | |
179 | * The device is expecting a stream of packets. All packets need to | |
180 | * have the PBF flag set to 0x0 (last packet) even if the firmware | |
181 | * file is segmented and there are multiple packets. If we give the | |
182 | * whole firmware to nci_send_data it will segment it and it will set | |
183 | * the PBF flag to 0x01 so we need to do the segmentation here. | |
184 | * | |
185 | * The firmware will be analyzed and applied when we send NCI_OP_PROP_PATCH_CMD | |
186 | * command with NCI_PATCH_TYPE_EOT parameter. The device will send a | |
187 | * NFCC_PATCH_NTF packaet and a NCI_OP_CORE_RESET_NTF packet. | |
188 | */ | |
189 | static int fdp_nci_send_patch(struct nci_dev *ndev, u8 conn_id, u8 type) | |
190 | { | |
191 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
192 | const struct firmware *fw; | |
193 | struct sk_buff *skb; | |
194 | unsigned long len; | |
195 | u8 max_size, payload_size; | |
196 | int rc = 0; | |
197 | ||
198 | if ((type == NCI_PATCH_TYPE_OTP && !info->otp_patch) || | |
199 | (type == NCI_PATCH_TYPE_RAM && !info->ram_patch)) | |
200 | return -EINVAL; | |
201 | ||
202 | if (type == NCI_PATCH_TYPE_OTP) | |
203 | fw = info->otp_patch; | |
204 | else | |
205 | fw = info->ram_patch; | |
206 | ||
207 | max_size = nci_conn_max_data_pkt_payload_size(ndev, conn_id); | |
208 | if (max_size <= 0) | |
209 | return -EINVAL; | |
210 | ||
211 | len = fw->size; | |
212 | ||
213 | fdp_nci_set_data_pkt_counter(ndev, fdp_nci_send_patch_cb, | |
214 | DIV_ROUND_UP(fw->size, max_size)); | |
215 | ||
216 | while (len) { | |
217 | ||
218 | payload_size = min_t(unsigned long, (unsigned long) max_size, | |
219 | len); | |
220 | ||
221 | skb = nci_skb_alloc(ndev, (NCI_CTRL_HDR_SIZE + payload_size), | |
222 | GFP_KERNEL); | |
223 | if (!skb) { | |
224 | fdp_nci_set_data_pkt_counter(ndev, NULL, 0); | |
225 | return -ENOMEM; | |
226 | } | |
227 | ||
228 | ||
229 | skb_reserve(skb, NCI_CTRL_HDR_SIZE); | |
230 | ||
231 | memcpy(skb_put(skb, payload_size), fw->data + (fw->size - len), | |
232 | payload_size); | |
233 | ||
234 | rc = nci_send_data(ndev, conn_id, skb); | |
235 | ||
236 | if (rc) { | |
237 | fdp_nci_set_data_pkt_counter(ndev, NULL, 0); | |
238 | return rc; | |
239 | } | |
240 | ||
241 | len -= payload_size; | |
242 | } | |
243 | ||
244 | return rc; | |
245 | } | |
246 | ||
247 | static int fdp_nci_open(struct nci_dev *ndev) | |
248 | { | |
249 | int r; | |
250 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
251 | struct device *dev = &info->phy->i2c_dev->dev; | |
252 | ||
253 | dev_dbg(dev, "%s\n", __func__); | |
254 | ||
255 | r = info->phy_ops->enable(info->phy); | |
256 | ||
257 | return r; | |
258 | } | |
259 | ||
260 | static int fdp_nci_close(struct nci_dev *ndev) | |
261 | { | |
262 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
263 | struct device *dev = &info->phy->i2c_dev->dev; | |
264 | ||
265 | dev_dbg(dev, "%s\n", __func__); | |
266 | return 0; | |
267 | } | |
268 | ||
269 | static int fdp_nci_send(struct nci_dev *ndev, struct sk_buff *skb) | |
270 | { | |
271 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
272 | struct device *dev = &info->phy->i2c_dev->dev; | |
273 | ||
274 | dev_dbg(dev, "%s\n", __func__); | |
275 | ||
276 | if (atomic_dec_and_test(&info->data_pkt_counter)) | |
277 | info->data_pkt_counter_cb(ndev); | |
278 | ||
279 | return info->phy_ops->write(info->phy, skb); | |
280 | } | |
281 | ||
282 | int fdp_nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb) | |
283 | { | |
284 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
285 | struct device *dev = &info->phy->i2c_dev->dev; | |
286 | ||
287 | dev_dbg(dev, "%s\n", __func__); | |
288 | return nci_recv_frame(ndev, skb); | |
289 | } | |
290 | EXPORT_SYMBOL(fdp_nci_recv_frame); | |
291 | ||
292 | static int fdp_nci_request_firmware(struct nci_dev *ndev) | |
293 | { | |
294 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
295 | struct device *dev = &info->phy->i2c_dev->dev; | |
296 | u8 *data; | |
297 | int r; | |
298 | ||
299 | r = request_firmware(&info->ram_patch, FDP_RAM_PATCH_NAME, dev); | |
300 | if (r < 0) { | |
301 | nfc_err(dev, "RAM patch request error\n"); | |
302 | goto error; | |
303 | } | |
304 | ||
305 | data = (u8 *) info->ram_patch->data; | |
306 | info->ram_patch_version = | |
307 | data[FDP_FW_HEADER_SIZE] | | |
308 | (data[FDP_FW_HEADER_SIZE + 1] << 8) | | |
309 | (data[FDP_FW_HEADER_SIZE + 2] << 16) | | |
310 | (data[FDP_FW_HEADER_SIZE + 3] << 24); | |
311 | ||
312 | dev_dbg(dev, "RAM patch version: %d, size: %d\n", | |
313 | info->ram_patch_version, (int) info->ram_patch->size); | |
314 | ||
315 | ||
316 | r = request_firmware(&info->otp_patch, FDP_OTP_PATCH_NAME, dev); | |
317 | if (r < 0) { | |
318 | nfc_err(dev, "OTP patch request error\n"); | |
319 | goto out; | |
320 | } | |
321 | ||
322 | data = (u8 *) info->otp_patch->data; | |
323 | info->otp_patch_version = | |
324 | data[FDP_FW_HEADER_SIZE] | | |
325 | (data[FDP_FW_HEADER_SIZE + 1] << 8) | | |
326 | (data[FDP_FW_HEADER_SIZE+2] << 16) | | |
327 | (data[FDP_FW_HEADER_SIZE+3] << 24); | |
328 | ||
329 | dev_dbg(dev, "OTP patch version: %d, size: %d\n", | |
330 | info->otp_patch_version, (int) info->otp_patch->size); | |
331 | out: | |
332 | return 0; | |
333 | error: | |
334 | return r; | |
335 | } | |
336 | ||
337 | static void fdp_nci_release_firmware(struct nci_dev *ndev) | |
338 | { | |
339 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
340 | ||
341 | if (info->otp_patch) { | |
342 | release_firmware(info->otp_patch); | |
343 | info->otp_patch = NULL; | |
344 | } | |
345 | ||
346 | if (info->ram_patch) { | |
347 | release_firmware(info->ram_patch); | |
f36acc33 | 348 | info->ram_patch = NULL; |
a06347c0 RD |
349 | } |
350 | } | |
351 | ||
352 | static int fdp_nci_patch_otp(struct nci_dev *ndev) | |
353 | { | |
354 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
355 | struct device *dev = &info->phy->i2c_dev->dev; | |
fa1ce54e | 356 | int conn_id; |
a06347c0 RD |
357 | int r = 0; |
358 | ||
359 | if (info->otp_version >= info->otp_patch_version) | |
360 | goto out; | |
361 | ||
362 | info->setup_patch_sent = 0; | |
363 | info->setup_reset_ntf = 0; | |
364 | info->setup_patch_ntf = 0; | |
365 | ||
366 | /* Patch init request */ | |
367 | r = fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_OTP); | |
368 | if (r) | |
369 | goto out; | |
370 | ||
371 | /* Patch data connection creation */ | |
372 | conn_id = fdp_nci_create_conn(ndev); | |
373 | if (conn_id < 0) { | |
374 | r = conn_id; | |
375 | goto out; | |
376 | } | |
377 | ||
378 | /* Send the patch over the data connection */ | |
379 | r = fdp_nci_send_patch(ndev, conn_id, NCI_PATCH_TYPE_OTP); | |
380 | if (r) | |
381 | goto out; | |
382 | ||
383 | /* Wait for all the packets to be send over i2c */ | |
384 | wait_event_interruptible(info->setup_wq, | |
385 | info->setup_patch_sent == 1); | |
386 | ||
387 | /* make sure that the NFCC processed the last data packet */ | |
388 | msleep(FDP_FW_UPDATE_SLEEP); | |
389 | ||
390 | /* Close the data connection */ | |
391 | r = nci_core_conn_close(info->ndev, conn_id); | |
392 | if (r) | |
393 | goto out; | |
394 | ||
395 | /* Patch finish message */ | |
396 | if (fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_EOT)) { | |
397 | nfc_err(dev, "OTP patch error 0x%x\n", r); | |
398 | r = -EINVAL; | |
399 | goto out; | |
400 | } | |
401 | ||
402 | /* If the patch notification didn't arrive yet, wait for it */ | |
403 | wait_event_interruptible(info->setup_wq, info->setup_patch_ntf); | |
404 | ||
405 | /* Check if the patching was successful */ | |
406 | r = info->setup_patch_status; | |
407 | if (r) { | |
408 | nfc_err(dev, "OTP patch error 0x%x\n", r); | |
409 | r = -EINVAL; | |
410 | goto out; | |
411 | } | |
412 | ||
413 | /* | |
414 | * We need to wait for the reset notification before we | |
415 | * can continue | |
416 | */ | |
417 | wait_event_interruptible(info->setup_wq, info->setup_reset_ntf); | |
418 | ||
419 | out: | |
420 | return r; | |
421 | } | |
422 | ||
423 | static int fdp_nci_patch_ram(struct nci_dev *ndev) | |
424 | { | |
425 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
426 | struct device *dev = &info->phy->i2c_dev->dev; | |
fa1ce54e | 427 | int conn_id; |
a06347c0 RD |
428 | int r = 0; |
429 | ||
430 | if (info->ram_version >= info->ram_patch_version) | |
431 | goto out; | |
432 | ||
433 | info->setup_patch_sent = 0; | |
434 | info->setup_reset_ntf = 0; | |
435 | info->setup_patch_ntf = 0; | |
436 | ||
437 | /* Patch init request */ | |
438 | r = fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_RAM); | |
439 | if (r) | |
440 | goto out; | |
441 | ||
442 | /* Patch data connection creation */ | |
443 | conn_id = fdp_nci_create_conn(ndev); | |
444 | if (conn_id < 0) { | |
445 | r = conn_id; | |
446 | goto out; | |
447 | } | |
448 | ||
449 | /* Send the patch over the data connection */ | |
450 | r = fdp_nci_send_patch(ndev, conn_id, NCI_PATCH_TYPE_RAM); | |
451 | if (r) | |
452 | goto out; | |
453 | ||
454 | /* Wait for all the packets to be send over i2c */ | |
455 | wait_event_interruptible(info->setup_wq, | |
456 | info->setup_patch_sent == 1); | |
457 | ||
458 | /* make sure that the NFCC processed the last data packet */ | |
459 | msleep(FDP_FW_UPDATE_SLEEP); | |
460 | ||
461 | /* Close the data connection */ | |
462 | r = nci_core_conn_close(info->ndev, conn_id); | |
463 | if (r) | |
464 | goto out; | |
465 | ||
466 | /* Patch finish message */ | |
467 | if (fdp_nci_patch_cmd(ndev, NCI_PATCH_TYPE_EOT)) { | |
468 | nfc_err(dev, "RAM patch error 0x%x\n", r); | |
469 | r = -EINVAL; | |
470 | goto out; | |
471 | } | |
472 | ||
473 | /* If the patch notification didn't arrive yet, wait for it */ | |
474 | wait_event_interruptible(info->setup_wq, info->setup_patch_ntf); | |
475 | ||
476 | /* Check if the patching was successful */ | |
477 | r = info->setup_patch_status; | |
478 | if (r) { | |
479 | nfc_err(dev, "RAM patch error 0x%x\n", r); | |
480 | r = -EINVAL; | |
481 | goto out; | |
482 | } | |
483 | ||
484 | /* | |
485 | * We need to wait for the reset notification before we | |
486 | * can continue | |
487 | */ | |
488 | wait_event_interruptible(info->setup_wq, info->setup_reset_ntf); | |
489 | ||
490 | out: | |
491 | return r; | |
492 | } | |
493 | ||
494 | static int fdp_nci_setup(struct nci_dev *ndev) | |
495 | { | |
496 | /* Format: total length followed by an NCI packet */ | |
497 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
498 | struct device *dev = &info->phy->i2c_dev->dev; | |
499 | int r; | |
500 | u8 patched = 0; | |
501 | ||
502 | dev_dbg(dev, "%s\n", __func__); | |
503 | ||
504 | r = nci_core_init(ndev); | |
505 | if (r) | |
506 | goto error; | |
507 | ||
508 | /* Get RAM and OTP version */ | |
509 | r = fdp_nci_get_versions(ndev); | |
510 | if (r) | |
511 | goto error; | |
512 | ||
513 | /* Load firmware from disk */ | |
514 | r = fdp_nci_request_firmware(ndev); | |
515 | if (r) | |
516 | goto error; | |
517 | ||
518 | /* Update OTP */ | |
519 | if (info->otp_version < info->otp_patch_version) { | |
520 | r = fdp_nci_patch_otp(ndev); | |
521 | if (r) | |
522 | goto error; | |
523 | patched = 1; | |
524 | } | |
525 | ||
526 | /* Update RAM */ | |
527 | if (info->ram_version < info->ram_patch_version) { | |
528 | r = fdp_nci_patch_ram(ndev); | |
529 | if (r) | |
530 | goto error; | |
531 | patched = 1; | |
532 | } | |
533 | ||
534 | /* Release the firmware buffers */ | |
535 | fdp_nci_release_firmware(ndev); | |
536 | ||
537 | /* If a patch was applied the new version is checked */ | |
538 | if (patched) { | |
539 | r = nci_core_init(ndev); | |
540 | if (r) | |
541 | goto error; | |
542 | ||
543 | r = fdp_nci_get_versions(ndev); | |
544 | if (r) | |
545 | goto error; | |
546 | ||
547 | if (info->otp_version != info->otp_patch_version || | |
548 | info->ram_version != info->ram_patch_version) { | |
549 | nfc_err(dev, "Firmware update failed"); | |
550 | r = -EINVAL; | |
551 | goto error; | |
552 | } | |
553 | } | |
554 | ||
555 | /* | |
556 | * We initialized the devices but the NFC subsystem expects | |
557 | * it to not be initialized. | |
558 | */ | |
559 | return nci_core_reset(ndev); | |
560 | ||
561 | error: | |
562 | fdp_nci_release_firmware(ndev); | |
563 | nfc_err(dev, "Setup error %d\n", r); | |
564 | return r; | |
565 | } | |
566 | ||
567 | static int fdp_nci_post_setup(struct nci_dev *ndev) | |
568 | { | |
569 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
570 | struct device *dev = &info->phy->i2c_dev->dev; | |
571 | int r; | |
572 | ||
573 | /* Check if the device has VSC */ | |
574 | if (info->fw_vsc_cfg && info->fw_vsc_cfg[0]) { | |
575 | ||
576 | /* Set the vendor specific configuration */ | |
577 | r = fdp_nci_set_production_data(ndev, info->fw_vsc_cfg[3], | |
578 | &info->fw_vsc_cfg[4]); | |
579 | if (r) { | |
580 | nfc_err(dev, "Vendor specific config set error %d\n", | |
581 | r); | |
582 | return r; | |
583 | } | |
584 | } | |
585 | ||
586 | /* Set clock type and frequency */ | |
587 | r = fdp_nci_set_clock(ndev, info->clock_type, info->clock_freq); | |
588 | if (r) { | |
589 | nfc_err(dev, "Clock set error %d\n", r); | |
590 | return r; | |
591 | } | |
592 | ||
593 | /* | |
594 | * In order to apply the VSC FDP needs a reset | |
595 | */ | |
596 | r = nci_core_reset(ndev); | |
597 | if (r) | |
598 | return r; | |
599 | ||
600 | /** | |
601 | * The nci core was initialized when post setup was called | |
602 | * so we leave it like that | |
603 | */ | |
604 | return nci_core_init(ndev); | |
605 | } | |
606 | ||
607 | static int fdp_nci_core_reset_ntf_packet(struct nci_dev *ndev, | |
608 | struct sk_buff *skb) | |
609 | { | |
610 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
611 | struct device *dev = &info->phy->i2c_dev->dev; | |
612 | ||
613 | dev_dbg(dev, "%s\n", __func__); | |
614 | info->setup_reset_ntf = 1; | |
615 | wake_up(&info->setup_wq); | |
616 | ||
617 | return 0; | |
618 | } | |
619 | ||
620 | static int fdp_nci_prop_patch_ntf_packet(struct nci_dev *ndev, | |
621 | struct sk_buff *skb) | |
622 | { | |
623 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
624 | struct device *dev = &info->phy->i2c_dev->dev; | |
625 | ||
626 | dev_dbg(dev, "%s\n", __func__); | |
627 | info->setup_patch_ntf = 1; | |
628 | info->setup_patch_status = skb->data[0]; | |
629 | wake_up(&info->setup_wq); | |
630 | ||
631 | return 0; | |
632 | } | |
633 | ||
634 | static int fdp_nci_prop_patch_rsp_packet(struct nci_dev *ndev, | |
635 | struct sk_buff *skb) | |
636 | { | |
637 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
638 | struct device *dev = &info->phy->i2c_dev->dev; | |
639 | u8 status = skb->data[0]; | |
640 | ||
641 | dev_dbg(dev, "%s: status 0x%x\n", __func__, status); | |
642 | nci_req_complete(ndev, status); | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
647 | static int fdp_nci_prop_set_production_data_rsp_packet(struct nci_dev *ndev, | |
648 | struct sk_buff *skb) | |
649 | { | |
650 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
651 | struct device *dev = &info->phy->i2c_dev->dev; | |
652 | u8 status = skb->data[0]; | |
653 | ||
654 | dev_dbg(dev, "%s: status 0x%x\n", __func__, status); | |
655 | nci_req_complete(ndev, status); | |
656 | ||
657 | return 0; | |
658 | } | |
659 | ||
660 | static int fdp_nci_core_get_config_rsp_packet(struct nci_dev *ndev, | |
661 | struct sk_buff *skb) | |
662 | { | |
663 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
664 | struct device *dev = &info->phy->i2c_dev->dev; | |
665 | struct nci_core_get_config_rsp *rsp = (void *) skb->data; | |
666 | u8 i, *p; | |
667 | ||
668 | if (rsp->status == NCI_STATUS_OK) { | |
669 | ||
670 | p = rsp->data; | |
671 | for (i = 0; i < 4; i++) { | |
672 | ||
673 | switch (*p++) { | |
674 | case NCI_PARAM_ID_FW_RAM_VERSION: | |
675 | p++; | |
676 | info->ram_version = le32_to_cpup((__le32 *) p); | |
677 | p += 4; | |
678 | break; | |
679 | case NCI_PARAM_ID_FW_OTP_VERSION: | |
680 | p++; | |
681 | info->otp_version = le32_to_cpup((__le32 *) p); | |
682 | p += 4; | |
683 | break; | |
684 | case NCI_PARAM_ID_OTP_LIMITED_VERSION: | |
685 | p++; | |
686 | info->otp_version = le32_to_cpup((__le32 *) p); | |
687 | p += 4; | |
688 | break; | |
689 | case NCI_PARAM_ID_KEY_INDEX_ID: | |
690 | p++; | |
691 | info->key_index = *p++; | |
692 | } | |
693 | } | |
694 | } | |
695 | ||
696 | dev_dbg(dev, "OTP version %d\n", info->otp_version); | |
697 | dev_dbg(dev, "RAM version %d\n", info->ram_version); | |
698 | dev_dbg(dev, "key index %d\n", info->key_index); | |
699 | dev_dbg(dev, "%s: status 0x%x\n", __func__, rsp->status); | |
700 | ||
701 | nci_req_complete(ndev, rsp->status); | |
702 | ||
703 | return 0; | |
704 | } | |
705 | ||
706 | static struct nci_driver_ops fdp_core_ops[] = { | |
707 | { | |
708 | .opcode = NCI_OP_CORE_GET_CONFIG_RSP, | |
709 | .rsp = fdp_nci_core_get_config_rsp_packet, | |
710 | }, | |
711 | { | |
712 | .opcode = NCI_OP_CORE_RESET_NTF, | |
713 | .ntf = fdp_nci_core_reset_ntf_packet, | |
714 | }, | |
715 | }; | |
716 | ||
717 | static struct nci_driver_ops fdp_prop_ops[] = { | |
718 | { | |
719 | .opcode = nci_opcode_pack(NCI_GID_PROP, NCI_OP_PROP_PATCH_OID), | |
720 | .rsp = fdp_nci_prop_patch_rsp_packet, | |
721 | .ntf = fdp_nci_prop_patch_ntf_packet, | |
722 | }, | |
723 | { | |
724 | .opcode = nci_opcode_pack(NCI_GID_PROP, | |
725 | NCI_OP_PROP_SET_PDATA_OID), | |
726 | .rsp = fdp_nci_prop_set_production_data_rsp_packet, | |
727 | }, | |
728 | }; | |
729 | ||
730 | struct nci_ops nci_ops = { | |
731 | .open = fdp_nci_open, | |
732 | .close = fdp_nci_close, | |
733 | .send = fdp_nci_send, | |
734 | .setup = fdp_nci_setup, | |
735 | .post_setup = fdp_nci_post_setup, | |
736 | .prop_ops = fdp_prop_ops, | |
737 | .n_prop_ops = ARRAY_SIZE(fdp_prop_ops), | |
738 | .core_ops = fdp_core_ops, | |
739 | .n_core_ops = ARRAY_SIZE(fdp_core_ops), | |
740 | }; | |
741 | ||
742 | int fdp_nci_probe(struct fdp_i2c_phy *phy, struct nfc_phy_ops *phy_ops, | |
743 | struct nci_dev **ndevp, int tx_headroom, | |
744 | int tx_tailroom, u8 clock_type, u32 clock_freq, | |
745 | u8 *fw_vsc_cfg) | |
746 | { | |
747 | struct device *dev = &phy->i2c_dev->dev; | |
748 | struct fdp_nci_info *info; | |
749 | struct nci_dev *ndev; | |
750 | u32 protocols; | |
751 | int r; | |
752 | ||
753 | info = kzalloc(sizeof(struct fdp_nci_info), GFP_KERNEL); | |
754 | if (!info) { | |
755 | r = -ENOMEM; | |
756 | goto err_info_alloc; | |
757 | } | |
758 | ||
759 | info->phy = phy; | |
760 | info->phy_ops = phy_ops; | |
761 | info->clock_type = clock_type; | |
762 | info->clock_freq = clock_freq; | |
763 | info->fw_vsc_cfg = fw_vsc_cfg; | |
764 | ||
765 | init_waitqueue_head(&info->setup_wq); | |
766 | ||
767 | protocols = NFC_PROTO_JEWEL_MASK | | |
768 | NFC_PROTO_MIFARE_MASK | | |
769 | NFC_PROTO_FELICA_MASK | | |
770 | NFC_PROTO_ISO14443_MASK | | |
771 | NFC_PROTO_ISO14443_B_MASK | | |
772 | NFC_PROTO_NFC_DEP_MASK | | |
773 | NFC_PROTO_ISO15693_MASK; | |
774 | ||
775 | ndev = nci_allocate_device(&nci_ops, protocols, tx_headroom, | |
776 | tx_tailroom); | |
777 | if (!ndev) { | |
778 | nfc_err(dev, "Cannot allocate nfc ndev\n"); | |
779 | r = -ENOMEM; | |
780 | goto err_alloc_ndev; | |
781 | } | |
782 | ||
783 | r = nci_register_device(ndev); | |
784 | if (r) | |
785 | goto err_regdev; | |
786 | ||
787 | *ndevp = ndev; | |
788 | info->ndev = ndev; | |
789 | ||
790 | nci_set_drvdata(ndev, info); | |
791 | ||
792 | return 0; | |
793 | ||
794 | err_regdev: | |
795 | nci_free_device(ndev); | |
796 | err_alloc_ndev: | |
797 | kfree(info); | |
798 | err_info_alloc: | |
799 | return r; | |
800 | } | |
801 | EXPORT_SYMBOL(fdp_nci_probe); | |
802 | ||
803 | void fdp_nci_remove(struct nci_dev *ndev) | |
804 | { | |
805 | struct fdp_nci_info *info = nci_get_drvdata(ndev); | |
806 | struct device *dev = &info->phy->i2c_dev->dev; | |
807 | ||
808 | dev_dbg(dev, "%s\n", __func__); | |
809 | ||
810 | nci_unregister_device(ndev); | |
811 | nci_free_device(ndev); | |
812 | kfree(info); | |
813 | } | |
814 | EXPORT_SYMBOL(fdp_nci_remove); | |
815 | ||
816 | MODULE_LICENSE("GPL"); | |
817 | MODULE_DESCRIPTION("NFC NCI driver for Intel Fields Peak NFC controller"); | |
818 | MODULE_AUTHOR("Robert Dolca <robert.dolca@intel.com>"); |