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