1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Sony NFC Port-100 Series driver |
4 | * Copyright (c) 2013, Intel Corporation. |
5 | * |
6 | * Partly based/Inspired by Stephen Tiedemann's nfcpy |
7 | */ |
8 | |
9 | #include <linux/module.h> |
10 | #include <linux/usb.h> |
11 | #include <net/nfc/digital.h> |
12 | |
13 | #define VERSION "0.1" |
14 | |
15 | #define SONY_VENDOR_ID 0x054c |
16 | #define RCS380S_PRODUCT_ID 0x06c1 |
17 | #define RCS380P_PRODUCT_ID 0x06c3 |
18 | |
19 | #define PORT100_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ |
20 | NFC_PROTO_MIFARE_MASK | \ |
21 | NFC_PROTO_FELICA_MASK | \ |
22 | NFC_PROTO_NFC_DEP_MASK | \ |
23 | NFC_PROTO_ISO14443_MASK | \ |
24 | NFC_PROTO_ISO14443_B_MASK) |
25 | |
26 | #define PORT100_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \ |
27 | NFC_DIGITAL_DRV_CAPS_TG_CRC) |
28 | |
29 | /* Standard port100 frame definitions */ |
30 | #define (sizeof(struct port100_frame) \ |
31 | + 2) /* data[0] CC, data[1] SCC */ |
32 | #define PORT100_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/ |
33 | |
34 | #define PORT100_COMM_RF_HEAD_MAX_LEN (sizeof(struct port100_tg_comm_rf_cmd)) |
35 | |
36 | /* |
37 | * Max extended frame payload len, excluding CC and SCC |
38 | * which are already in PORT100_FRAME_HEADER_LEN. |
39 | */ |
40 | #define PORT100_FRAME_MAX_PAYLOAD_LEN 1001 |
41 | |
42 | #define PORT100_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2), |
43 | Postamble (1) */ |
44 | static u8 ack_frame[PORT100_FRAME_ACK_SIZE] = { |
45 | 0x00, 0x00, 0xff, 0x00, 0xff, 0x00 |
46 | }; |
47 | |
48 | #define PORT100_FRAME_CHECKSUM(f) (f->data[le16_to_cpu(f->datalen)]) |
49 | #define PORT100_FRAME_POSTAMBLE(f) (f->data[le16_to_cpu(f->datalen) + 1]) |
50 | |
51 | /* start of frame */ |
52 | #define PORT100_FRAME_SOF 0x00FF |
53 | #define PORT100_FRAME_EXT 0xFFFF |
54 | #define PORT100_FRAME_ACK 0x00FF |
55 | |
56 | /* Port-100 command: in or out */ |
57 | #define PORT100_FRAME_DIRECTION(f) (f->data[0]) /* CC */ |
58 | #define PORT100_FRAME_DIR_OUT 0xD6 |
59 | #define PORT100_FRAME_DIR_IN 0xD7 |
60 | |
61 | /* Port-100 sub-command */ |
62 | #define PORT100_FRAME_CMD(f) (f->data[1]) /* SCC */ |
63 | |
64 | #define PORT100_CMD_GET_FIRMWARE_VERSION 0x20 |
65 | #define PORT100_CMD_GET_COMMAND_TYPE 0x28 |
66 | #define PORT100_CMD_SET_COMMAND_TYPE 0x2A |
67 | |
68 | #define PORT100_CMD_IN_SET_RF 0x00 |
69 | #define PORT100_CMD_IN_SET_PROTOCOL 0x02 |
70 | #define PORT100_CMD_IN_COMM_RF 0x04 |
71 | |
72 | #define PORT100_CMD_TG_SET_RF 0x40 |
73 | #define PORT100_CMD_TG_SET_PROTOCOL 0x42 |
74 | #define PORT100_CMD_TG_SET_RF_OFF 0x46 |
75 | #define PORT100_CMD_TG_COMM_RF 0x48 |
76 | |
77 | #define PORT100_CMD_SWITCH_RF 0x06 |
78 | |
79 | #define PORT100_CMD_RESPONSE(cmd) (cmd + 1) |
80 | |
81 | #define PORT100_CMD_TYPE_IS_SUPPORTED(mask, cmd_type) \ |
82 | ((mask) & (0x01 << (cmd_type))) |
83 | #define PORT100_CMD_TYPE_0 0 |
84 | #define PORT100_CMD_TYPE_1 1 |
85 | |
86 | #define PORT100_CMD_STATUS_OK 0x00 |
87 | #define PORT100_CMD_STATUS_TIMEOUT 0x80 |
88 | |
89 | #define PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK 0x01 |
90 | #define PORT100_MDAA_TGT_WAS_ACTIVATED_MASK 0x02 |
91 | |
92 | struct port100; |
93 | |
94 | typedef void (*port100_send_async_complete_t)(struct port100 *dev, void *arg, |
95 | struct sk_buff *resp); |
96 | |
97 | /* |
98 | * Setting sets structure for in_set_rf command |
99 | * |
100 | * @in_*_set_number: Represent the entry indexes in the port-100 RF Base Table. |
101 | * This table contains multiple RF setting sets required for RF |
102 | * communication. |
103 | * |
104 | * @in_*_comm_type: Theses fields set the communication type to be used. |
105 | */ |
106 | struct port100_in_rf_setting { |
107 | u8 in_send_set_number; |
108 | u8 in_send_comm_type; |
109 | u8 in_recv_set_number; |
110 | u8 in_recv_comm_type; |
111 | } __packed; |
112 | |
113 | #define PORT100_COMM_TYPE_IN_212F 0x01 |
114 | #define PORT100_COMM_TYPE_IN_424F 0x02 |
115 | #define PORT100_COMM_TYPE_IN_106A 0x03 |
116 | #define PORT100_COMM_TYPE_IN_106B 0x07 |
117 | |
118 | static const struct port100_in_rf_setting in_rf_settings[] = { |
119 | [NFC_DIGITAL_RF_TECH_212F] = { |
120 | .in_send_set_number = 1, |
121 | .in_send_comm_type = PORT100_COMM_TYPE_IN_212F, |
122 | .in_recv_set_number = 15, |
123 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_212F, |
124 | }, |
125 | [NFC_DIGITAL_RF_TECH_424F] = { |
126 | .in_send_set_number = 1, |
127 | .in_send_comm_type = PORT100_COMM_TYPE_IN_424F, |
128 | .in_recv_set_number = 15, |
129 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_424F, |
130 | }, |
131 | [NFC_DIGITAL_RF_TECH_106A] = { |
132 | .in_send_set_number = 2, |
133 | .in_send_comm_type = PORT100_COMM_TYPE_IN_106A, |
134 | .in_recv_set_number = 15, |
135 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_106A, |
136 | }, |
137 | [NFC_DIGITAL_RF_TECH_106B] = { |
138 | .in_send_set_number = 3, |
139 | .in_send_comm_type = PORT100_COMM_TYPE_IN_106B, |
140 | .in_recv_set_number = 15, |
141 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_106B, |
142 | }, |
143 | /* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */ |
144 | [NFC_DIGITAL_RF_TECH_LAST] = { 0 }, |
145 | }; |
146 | |
147 | /** |
148 | * struct port100_tg_rf_setting - Setting sets structure for tg_set_rf command |
149 | * |
150 | * @tg_set_number: Represents the entry index in the port-100 RF Base Table. |
151 | * This table contains multiple RF setting sets required for RF |
152 | * communication. this field is used for both send and receive |
153 | * settings. |
154 | * |
155 | * @tg_comm_type: Sets the communication type to be used to send and receive |
156 | * data. |
157 | */ |
158 | struct port100_tg_rf_setting { |
159 | u8 tg_set_number; |
160 | u8 tg_comm_type; |
161 | } __packed; |
162 | |
163 | #define PORT100_COMM_TYPE_TG_106A 0x0B |
164 | #define PORT100_COMM_TYPE_TG_212F 0x0C |
165 | #define PORT100_COMM_TYPE_TG_424F 0x0D |
166 | |
167 | static const struct port100_tg_rf_setting tg_rf_settings[] = { |
168 | [NFC_DIGITAL_RF_TECH_106A] = { |
169 | .tg_set_number = 8, |
170 | .tg_comm_type = PORT100_COMM_TYPE_TG_106A, |
171 | }, |
172 | [NFC_DIGITAL_RF_TECH_212F] = { |
173 | .tg_set_number = 8, |
174 | .tg_comm_type = PORT100_COMM_TYPE_TG_212F, |
175 | }, |
176 | [NFC_DIGITAL_RF_TECH_424F] = { |
177 | .tg_set_number = 8, |
178 | .tg_comm_type = PORT100_COMM_TYPE_TG_424F, |
179 | }, |
180 | /* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */ |
181 | [NFC_DIGITAL_RF_TECH_LAST] = { 0 }, |
182 | |
183 | }; |
184 | |
185 | #define PORT100_IN_PROT_INITIAL_GUARD_TIME 0x00 |
186 | #define PORT100_IN_PROT_ADD_CRC 0x01 |
187 | #define PORT100_IN_PROT_CHECK_CRC 0x02 |
188 | #define PORT100_IN_PROT_MULTI_CARD 0x03 |
189 | #define PORT100_IN_PROT_ADD_PARITY 0x04 |
190 | #define PORT100_IN_PROT_CHECK_PARITY 0x05 |
191 | #define PORT100_IN_PROT_BITWISE_AC_RECV_MODE 0x06 |
192 | #define PORT100_IN_PROT_VALID_BIT_NUMBER 0x07 |
193 | #define PORT100_IN_PROT_CRYPTO1 0x08 |
194 | #define PORT100_IN_PROT_ADD_SOF 0x09 |
195 | #define PORT100_IN_PROT_CHECK_SOF 0x0A |
196 | #define PORT100_IN_PROT_ADD_EOF 0x0B |
197 | #define PORT100_IN_PROT_CHECK_EOF 0x0C |
198 | #define PORT100_IN_PROT_DEAF_TIME 0x0E |
199 | #define PORT100_IN_PROT_CRM 0x0F |
200 | #define PORT100_IN_PROT_CRM_MIN_LEN 0x10 |
201 | #define PORT100_IN_PROT_T1_TAG_FRAME 0x11 |
202 | #define PORT100_IN_PROT_RFCA 0x12 |
203 | #define PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR 0x13 |
204 | #define PORT100_IN_PROT_END 0x14 |
205 | |
206 | #define PORT100_IN_MAX_NUM_PROTOCOLS 19 |
207 | |
208 | #define PORT100_TG_PROT_TU 0x00 |
209 | #define PORT100_TG_PROT_RF_OFF 0x01 |
210 | #define PORT100_TG_PROT_CRM 0x02 |
211 | #define PORT100_TG_PROT_END 0x03 |
212 | |
213 | #define PORT100_TG_MAX_NUM_PROTOCOLS 3 |
214 | |
215 | struct port100_protocol { |
216 | u8 number; |
217 | u8 value; |
218 | } __packed; |
219 | |
220 | static const struct port100_protocol |
221 | in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = { |
222 | [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { |
223 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, |
224 | { PORT100_IN_PROT_ADD_CRC, 0 }, |
225 | { PORT100_IN_PROT_CHECK_CRC, 0 }, |
226 | { PORT100_IN_PROT_MULTI_CARD, 0 }, |
227 | { PORT100_IN_PROT_ADD_PARITY, 0 }, |
228 | { PORT100_IN_PROT_CHECK_PARITY, 1 }, |
229 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, |
230 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 7 }, |
231 | { PORT100_IN_PROT_CRYPTO1, 0 }, |
232 | { PORT100_IN_PROT_ADD_SOF, 0 }, |
233 | { PORT100_IN_PROT_CHECK_SOF, 0 }, |
234 | { PORT100_IN_PROT_ADD_EOF, 0 }, |
235 | { PORT100_IN_PROT_CHECK_EOF, 0 }, |
236 | { PORT100_IN_PROT_DEAF_TIME, 4 }, |
237 | { PORT100_IN_PROT_CRM, 0 }, |
238 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, |
239 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, |
240 | { PORT100_IN_PROT_RFCA, 0 }, |
241 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, |
242 | { PORT100_IN_PROT_END, 0 }, |
243 | }, |
244 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD] = { |
245 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, |
246 | { PORT100_IN_PROT_ADD_CRC, 0 }, |
247 | { PORT100_IN_PROT_CHECK_CRC, 0 }, |
248 | { PORT100_IN_PROT_MULTI_CARD, 0 }, |
249 | { PORT100_IN_PROT_ADD_PARITY, 1 }, |
250 | { PORT100_IN_PROT_CHECK_PARITY, 1 }, |
251 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, |
252 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, |
253 | { PORT100_IN_PROT_CRYPTO1, 0 }, |
254 | { PORT100_IN_PROT_ADD_SOF, 0 }, |
255 | { PORT100_IN_PROT_CHECK_SOF, 0 }, |
256 | { PORT100_IN_PROT_ADD_EOF, 0 }, |
257 | { PORT100_IN_PROT_CHECK_EOF, 0 }, |
258 | { PORT100_IN_PROT_DEAF_TIME, 4 }, |
259 | { PORT100_IN_PROT_CRM, 0 }, |
260 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, |
261 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, |
262 | { PORT100_IN_PROT_RFCA, 0 }, |
263 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, |
264 | { PORT100_IN_PROT_END, 0 }, |
265 | }, |
266 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = { |
267 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, |
268 | { PORT100_IN_PROT_ADD_CRC, 1 }, |
269 | { PORT100_IN_PROT_CHECK_CRC, 1 }, |
270 | { PORT100_IN_PROT_MULTI_CARD, 0 }, |
271 | { PORT100_IN_PROT_ADD_PARITY, 1 }, |
272 | { PORT100_IN_PROT_CHECK_PARITY, 1 }, |
273 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, |
274 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, |
275 | { PORT100_IN_PROT_CRYPTO1, 0 }, |
276 | { PORT100_IN_PROT_ADD_SOF, 0 }, |
277 | { PORT100_IN_PROT_CHECK_SOF, 0 }, |
278 | { PORT100_IN_PROT_ADD_EOF, 0 }, |
279 | { PORT100_IN_PROT_CHECK_EOF, 0 }, |
280 | { PORT100_IN_PROT_DEAF_TIME, 4 }, |
281 | { PORT100_IN_PROT_CRM, 0 }, |
282 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, |
283 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, |
284 | { PORT100_IN_PROT_RFCA, 0 }, |
285 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, |
286 | { PORT100_IN_PROT_END, 0 }, |
287 | }, |
288 | [NFC_DIGITAL_FRAMING_NFCA_T1T] = { |
289 | /* nfc_digital_framing_nfca_short */ |
290 | { PORT100_IN_PROT_ADD_CRC, 2 }, |
291 | { PORT100_IN_PROT_CHECK_CRC, 2 }, |
292 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, |
293 | { PORT100_IN_PROT_T1_TAG_FRAME, 2 }, |
294 | { PORT100_IN_PROT_END, 0 }, |
295 | }, |
296 | [NFC_DIGITAL_FRAMING_NFCA_T2T] = { |
297 | /* nfc_digital_framing_nfca_standard */ |
298 | { PORT100_IN_PROT_ADD_CRC, 1 }, |
299 | { PORT100_IN_PROT_CHECK_CRC, 0 }, |
300 | { PORT100_IN_PROT_END, 0 }, |
301 | }, |
302 | [NFC_DIGITAL_FRAMING_NFCA_T4T] = { |
303 | /* nfc_digital_framing_nfca_standard_with_crc_a */ |
304 | { PORT100_IN_PROT_END, 0 }, |
305 | }, |
306 | [NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = { |
307 | /* nfc_digital_framing_nfca_standard */ |
308 | { PORT100_IN_PROT_END, 0 }, |
309 | }, |
310 | [NFC_DIGITAL_FRAMING_NFCF] = { |
311 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 18 }, |
312 | { PORT100_IN_PROT_ADD_CRC, 1 }, |
313 | { PORT100_IN_PROT_CHECK_CRC, 1 }, |
314 | { PORT100_IN_PROT_MULTI_CARD, 0 }, |
315 | { PORT100_IN_PROT_ADD_PARITY, 0 }, |
316 | { PORT100_IN_PROT_CHECK_PARITY, 0 }, |
317 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, |
318 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, |
319 | { PORT100_IN_PROT_CRYPTO1, 0 }, |
320 | { PORT100_IN_PROT_ADD_SOF, 0 }, |
321 | { PORT100_IN_PROT_CHECK_SOF, 0 }, |
322 | { PORT100_IN_PROT_ADD_EOF, 0 }, |
323 | { PORT100_IN_PROT_CHECK_EOF, 0 }, |
324 | { PORT100_IN_PROT_DEAF_TIME, 4 }, |
325 | { PORT100_IN_PROT_CRM, 0 }, |
326 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, |
327 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, |
328 | { PORT100_IN_PROT_RFCA, 0 }, |
329 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, |
330 | { PORT100_IN_PROT_END, 0 }, |
331 | }, |
332 | [NFC_DIGITAL_FRAMING_NFCF_T3T] = { |
333 | /* nfc_digital_framing_nfcf */ |
334 | { PORT100_IN_PROT_END, 0 }, |
335 | }, |
336 | [NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = { |
337 | /* nfc_digital_framing_nfcf */ |
338 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 18 }, |
339 | { PORT100_IN_PROT_ADD_CRC, 1 }, |
340 | { PORT100_IN_PROT_CHECK_CRC, 1 }, |
341 | { PORT100_IN_PROT_MULTI_CARD, 0 }, |
342 | { PORT100_IN_PROT_ADD_PARITY, 0 }, |
343 | { PORT100_IN_PROT_CHECK_PARITY, 0 }, |
344 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, |
345 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, |
346 | { PORT100_IN_PROT_CRYPTO1, 0 }, |
347 | { PORT100_IN_PROT_ADD_SOF, 0 }, |
348 | { PORT100_IN_PROT_CHECK_SOF, 0 }, |
349 | { PORT100_IN_PROT_ADD_EOF, 0 }, |
350 | { PORT100_IN_PROT_CHECK_EOF, 0 }, |
351 | { PORT100_IN_PROT_DEAF_TIME, 4 }, |
352 | { PORT100_IN_PROT_CRM, 0 }, |
353 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, |
354 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, |
355 | { PORT100_IN_PROT_RFCA, 0 }, |
356 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, |
357 | { PORT100_IN_PROT_END, 0 }, |
358 | }, |
359 | [NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = { |
360 | { PORT100_IN_PROT_END, 0 }, |
361 | }, |
362 | [NFC_DIGITAL_FRAMING_NFCB] = { |
363 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 20 }, |
364 | { PORT100_IN_PROT_ADD_CRC, 1 }, |
365 | { PORT100_IN_PROT_CHECK_CRC, 1 }, |
366 | { PORT100_IN_PROT_MULTI_CARD, 0 }, |
367 | { PORT100_IN_PROT_ADD_PARITY, 0 }, |
368 | { PORT100_IN_PROT_CHECK_PARITY, 0 }, |
369 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, |
370 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, |
371 | { PORT100_IN_PROT_CRYPTO1, 0 }, |
372 | { PORT100_IN_PROT_ADD_SOF, 1 }, |
373 | { PORT100_IN_PROT_CHECK_SOF, 1 }, |
374 | { PORT100_IN_PROT_ADD_EOF, 1 }, |
375 | { PORT100_IN_PROT_CHECK_EOF, 1 }, |
376 | { PORT100_IN_PROT_DEAF_TIME, 4 }, |
377 | { PORT100_IN_PROT_CRM, 0 }, |
378 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, |
379 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, |
380 | { PORT100_IN_PROT_RFCA, 0 }, |
381 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, |
382 | { PORT100_IN_PROT_END, 0 }, |
383 | }, |
384 | [NFC_DIGITAL_FRAMING_NFCB_T4T] = { |
385 | /* nfc_digital_framing_nfcb */ |
386 | { PORT100_IN_PROT_END, 0 }, |
387 | }, |
388 | /* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */ |
389 | [NFC_DIGITAL_FRAMING_LAST] = { |
390 | { PORT100_IN_PROT_END, 0 }, |
391 | }, |
392 | }; |
393 | |
394 | static const struct port100_protocol |
395 | tg_protocols[][PORT100_TG_MAX_NUM_PROTOCOLS + 1] = { |
396 | [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { |
397 | { PORT100_TG_PROT_END, 0 }, |
398 | }, |
399 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD] = { |
400 | { PORT100_TG_PROT_END, 0 }, |
401 | }, |
402 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = { |
403 | { PORT100_TG_PROT_END, 0 }, |
404 | }, |
405 | [NFC_DIGITAL_FRAMING_NFCA_T1T] = { |
406 | { PORT100_TG_PROT_END, 0 }, |
407 | }, |
408 | [NFC_DIGITAL_FRAMING_NFCA_T2T] = { |
409 | { PORT100_TG_PROT_END, 0 }, |
410 | }, |
411 | [NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = { |
412 | { PORT100_TG_PROT_TU, 1 }, |
413 | { PORT100_TG_PROT_RF_OFF, 0 }, |
414 | { PORT100_TG_PROT_CRM, 7 }, |
415 | { PORT100_TG_PROT_END, 0 }, |
416 | }, |
417 | [NFC_DIGITAL_FRAMING_NFCF] = { |
418 | { PORT100_TG_PROT_END, 0 }, |
419 | }, |
420 | [NFC_DIGITAL_FRAMING_NFCF_T3T] = { |
421 | { PORT100_TG_PROT_END, 0 }, |
422 | }, |
423 | [NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = { |
424 | { PORT100_TG_PROT_TU, 1 }, |
425 | { PORT100_TG_PROT_RF_OFF, 0 }, |
426 | { PORT100_TG_PROT_CRM, 7 }, |
427 | { PORT100_TG_PROT_END, 0 }, |
428 | }, |
429 | [NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = { |
430 | { PORT100_TG_PROT_RF_OFF, 1 }, |
431 | { PORT100_TG_PROT_END, 0 }, |
432 | }, |
433 | /* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */ |
434 | [NFC_DIGITAL_FRAMING_LAST] = { |
435 | { PORT100_TG_PROT_END, 0 }, |
436 | }, |
437 | }; |
438 | |
439 | struct port100 { |
440 | struct nfc_digital_dev *nfc_digital_dev; |
441 | |
442 | int skb_headroom; |
443 | int skb_tailroom; |
444 | |
445 | struct usb_device *udev; |
446 | struct usb_interface *interface; |
447 | |
448 | struct urb *out_urb; |
449 | struct urb *in_urb; |
450 | |
451 | /* This mutex protects the out_urb and avoids to submit a new command |
452 | * through port100_send_frame_async() while the previous one is being |
453 | * canceled through port100_abort_cmd(). |
454 | */ |
455 | struct mutex out_urb_lock; |
456 | |
457 | struct work_struct cmd_complete_work; |
458 | |
459 | u8 cmd_type; |
460 | |
461 | /* The digital stack serializes commands to be sent. There is no need |
462 | * for any queuing/locking mechanism at driver level. |
463 | */ |
464 | struct port100_cmd *cmd; |
465 | |
466 | bool cmd_cancel; |
467 | struct completion cmd_cancel_done; |
468 | }; |
469 | |
470 | struct port100_cmd { |
471 | u8 code; |
472 | int status; |
473 | struct sk_buff *req; |
474 | struct sk_buff *resp; |
475 | int resp_len; |
476 | port100_send_async_complete_t complete_cb; |
477 | void *complete_cb_context; |
478 | }; |
479 | |
480 | struct port100_frame { |
481 | u8 preamble; |
482 | __be16 start_frame; |
483 | __be16 extended_frame; |
484 | __le16 datalen; |
485 | u8 datalen_checksum; |
486 | u8 data[]; |
487 | } __packed; |
488 | |
489 | struct port100_ack_frame { |
490 | u8 preamble; |
491 | __be16 start_frame; |
492 | __be16 ack_frame; |
493 | u8 postambule; |
494 | } __packed; |
495 | |
496 | struct port100_cb_arg { |
497 | nfc_digital_cmd_complete_t complete_cb; |
498 | void *complete_arg; |
499 | u8 mdaa; |
500 | }; |
501 | |
502 | struct port100_tg_comm_rf_cmd { |
503 | __le16 guard_time; |
504 | __le16 send_timeout; |
505 | u8 mdaa; |
506 | u8 nfca_param[6]; |
507 | u8 nfcf_param[18]; |
508 | u8 mf_halted; |
509 | u8 arae_flag; |
510 | __le16 recv_timeout; |
511 | u8 data[]; |
512 | } __packed; |
513 | |
514 | struct port100_tg_comm_rf_res { |
515 | u8 comm_type; |
516 | u8 ar_status; |
517 | u8 target_activated; |
518 | __le32 status; |
519 | u8 data[]; |
520 | } __packed; |
521 | |
522 | /* The rule: value + checksum = 0 */ |
523 | static inline u8 port100_checksum(u16 value) |
524 | { |
525 | return ~(((u8 *)&value)[0] + ((u8 *)&value)[1]) + 1; |
526 | } |
527 | |
528 | /* The rule: sum(data elements) + checksum = 0 */ |
529 | static u8 port100_data_checksum(const u8 *data, int datalen) |
530 | { |
531 | u8 sum = 0; |
532 | int i; |
533 | |
534 | for (i = 0; i < datalen; i++) |
535 | sum += data[i]; |
536 | |
537 | return port100_checksum(value: sum); |
538 | } |
539 | |
540 | static void port100_tx_frame_init(void *_frame, u8 cmd_code) |
541 | { |
542 | struct port100_frame *frame = _frame; |
543 | |
544 | frame->preamble = 0; |
545 | frame->start_frame = cpu_to_be16(PORT100_FRAME_SOF); |
546 | frame->extended_frame = cpu_to_be16(PORT100_FRAME_EXT); |
547 | PORT100_FRAME_DIRECTION(frame) = PORT100_FRAME_DIR_OUT; |
548 | PORT100_FRAME_CMD(frame) = cmd_code; |
549 | frame->datalen = cpu_to_le16(2); |
550 | } |
551 | |
552 | static void port100_tx_frame_finish(void *_frame) |
553 | { |
554 | struct port100_frame *frame = _frame; |
555 | |
556 | frame->datalen_checksum = port100_checksum(le16_to_cpu(frame->datalen)); |
557 | |
558 | PORT100_FRAME_CHECKSUM(frame) = |
559 | port100_data_checksum(data: frame->data, le16_to_cpu(frame->datalen)); |
560 | |
561 | PORT100_FRAME_POSTAMBLE(frame) = 0; |
562 | } |
563 | |
564 | static void port100_tx_update_payload_len(void *_frame, int len) |
565 | { |
566 | struct port100_frame *frame = _frame; |
567 | |
568 | le16_add_cpu(var: &frame->datalen, val: len); |
569 | } |
570 | |
571 | static bool port100_rx_frame_is_valid(const void *_frame) |
572 | { |
573 | u8 checksum; |
574 | const struct port100_frame *frame = _frame; |
575 | |
576 | if (frame->start_frame != cpu_to_be16(PORT100_FRAME_SOF) || |
577 | frame->extended_frame != cpu_to_be16(PORT100_FRAME_EXT)) |
578 | return false; |
579 | |
580 | checksum = port100_checksum(le16_to_cpu(frame->datalen)); |
581 | if (checksum != frame->datalen_checksum) |
582 | return false; |
583 | |
584 | checksum = port100_data_checksum(data: frame->data, |
585 | le16_to_cpu(frame->datalen)); |
586 | if (checksum != PORT100_FRAME_CHECKSUM(frame)) |
587 | return false; |
588 | |
589 | return true; |
590 | } |
591 | |
592 | static bool port100_rx_frame_is_ack(const struct port100_ack_frame *frame) |
593 | { |
594 | return (frame->start_frame == cpu_to_be16(PORT100_FRAME_SOF) && |
595 | frame->ack_frame == cpu_to_be16(PORT100_FRAME_ACK)); |
596 | } |
597 | |
598 | static inline int port100_rx_frame_size(const void *frame) |
599 | { |
600 | const struct port100_frame *f = frame; |
601 | |
602 | return sizeof(struct port100_frame) + le16_to_cpu(f->datalen) + |
603 | PORT100_FRAME_TAIL_LEN; |
604 | } |
605 | |
606 | static bool port100_rx_frame_is_cmd_response(const struct port100 *dev, |
607 | const void *frame) |
608 | { |
609 | const struct port100_frame *f = frame; |
610 | |
611 | return (PORT100_FRAME_CMD(f) == PORT100_CMD_RESPONSE(dev->cmd->code)); |
612 | } |
613 | |
614 | static void port100_recv_response(struct urb *urb) |
615 | { |
616 | struct port100 *dev = urb->context; |
617 | struct port100_cmd *cmd = dev->cmd; |
618 | u8 *in_frame; |
619 | |
620 | cmd->status = urb->status; |
621 | |
622 | switch (urb->status) { |
623 | case 0: |
624 | break; /* success */ |
625 | case -ECONNRESET: |
626 | case -ENOENT: |
627 | nfc_dbg(&dev->interface->dev, |
628 | "The urb has been canceled (status %d)\n" , urb->status); |
629 | goto sched_wq; |
630 | case -ESHUTDOWN: |
631 | default: |
632 | nfc_err(&dev->interface->dev, "Urb failure (status %d)\n" , |
633 | urb->status); |
634 | goto sched_wq; |
635 | } |
636 | |
637 | in_frame = dev->in_urb->transfer_buffer; |
638 | |
639 | if (!port100_rx_frame_is_valid(frame: in_frame)) { |
640 | nfc_err(&dev->interface->dev, "Received an invalid frame\n" ); |
641 | cmd->status = -EIO; |
642 | goto sched_wq; |
643 | } |
644 | |
645 | print_hex_dump_debug("PORT100 RX: " , DUMP_PREFIX_NONE, 16, 1, in_frame, |
646 | port100_rx_frame_size(in_frame), false); |
647 | |
648 | if (!port100_rx_frame_is_cmd_response(dev, frame: in_frame)) { |
649 | nfc_err(&dev->interface->dev, |
650 | "It's not the response to the last command\n" ); |
651 | cmd->status = -EIO; |
652 | goto sched_wq; |
653 | } |
654 | |
655 | sched_wq: |
656 | schedule_work(work: &dev->cmd_complete_work); |
657 | } |
658 | |
659 | static int port100_submit_urb_for_response(const struct port100 *dev, |
660 | gfp_t flags) |
661 | { |
662 | dev->in_urb->complete = port100_recv_response; |
663 | |
664 | return usb_submit_urb(urb: dev->in_urb, mem_flags: flags); |
665 | } |
666 | |
667 | static void port100_recv_ack(struct urb *urb) |
668 | { |
669 | struct port100 *dev = urb->context; |
670 | struct port100_cmd *cmd = dev->cmd; |
671 | const struct port100_ack_frame *in_frame; |
672 | int rc; |
673 | |
674 | cmd->status = urb->status; |
675 | |
676 | switch (urb->status) { |
677 | case 0: |
678 | break; /* success */ |
679 | case -ECONNRESET: |
680 | case -ENOENT: |
681 | nfc_dbg(&dev->interface->dev, |
682 | "The urb has been stopped (status %d)\n" , urb->status); |
683 | goto sched_wq; |
684 | case -ESHUTDOWN: |
685 | default: |
686 | nfc_err(&dev->interface->dev, "Urb failure (status %d)\n" , |
687 | urb->status); |
688 | goto sched_wq; |
689 | } |
690 | |
691 | in_frame = dev->in_urb->transfer_buffer; |
692 | |
693 | if (!port100_rx_frame_is_ack(frame: in_frame)) { |
694 | nfc_err(&dev->interface->dev, "Received an invalid ack\n" ); |
695 | cmd->status = -EIO; |
696 | goto sched_wq; |
697 | } |
698 | |
699 | rc = port100_submit_urb_for_response(dev, GFP_ATOMIC); |
700 | if (rc) { |
701 | nfc_err(&dev->interface->dev, |
702 | "usb_submit_urb failed with result %d\n" , rc); |
703 | cmd->status = rc; |
704 | goto sched_wq; |
705 | } |
706 | |
707 | return; |
708 | |
709 | sched_wq: |
710 | schedule_work(work: &dev->cmd_complete_work); |
711 | } |
712 | |
713 | static int port100_submit_urb_for_ack(const struct port100 *dev, gfp_t flags) |
714 | { |
715 | dev->in_urb->complete = port100_recv_ack; |
716 | |
717 | return usb_submit_urb(urb: dev->in_urb, mem_flags: flags); |
718 | } |
719 | |
720 | static int port100_send_ack(struct port100 *dev) |
721 | { |
722 | int rc = 0; |
723 | |
724 | mutex_lock(&dev->out_urb_lock); |
725 | |
726 | /* |
727 | * If prior cancel is in-flight (dev->cmd_cancel == true), we |
728 | * can skip to send cancel. Then this will wait the prior |
729 | * cancel, or merged into the next cancel rarely if next |
730 | * cancel was started before waiting done. In any case, this |
731 | * will be waked up soon or later. |
732 | */ |
733 | if (!dev->cmd_cancel) { |
734 | reinit_completion(x: &dev->cmd_cancel_done); |
735 | |
736 | usb_kill_urb(urb: dev->out_urb); |
737 | |
738 | dev->out_urb->transfer_buffer = ack_frame; |
739 | dev->out_urb->transfer_buffer_length = sizeof(ack_frame); |
740 | rc = usb_submit_urb(urb: dev->out_urb, GFP_KERNEL); |
741 | |
742 | /* |
743 | * Set the cmd_cancel flag only if the URB has been |
744 | * successfully submitted. It will be reset by the out |
745 | * URB completion callback port100_send_complete(). |
746 | */ |
747 | dev->cmd_cancel = !rc; |
748 | } |
749 | |
750 | mutex_unlock(lock: &dev->out_urb_lock); |
751 | |
752 | if (!rc) |
753 | wait_for_completion(&dev->cmd_cancel_done); |
754 | |
755 | return rc; |
756 | } |
757 | |
758 | static int port100_send_frame_async(struct port100 *dev, |
759 | const struct sk_buff *out, |
760 | const struct sk_buff *in, int in_len) |
761 | { |
762 | int rc; |
763 | |
764 | mutex_lock(&dev->out_urb_lock); |
765 | |
766 | /* A command cancel frame as been sent through dev->out_urb. Don't try |
767 | * to submit a new one. |
768 | */ |
769 | if (dev->cmd_cancel) { |
770 | rc = -EAGAIN; |
771 | goto exit; |
772 | } |
773 | |
774 | dev->out_urb->transfer_buffer = out->data; |
775 | dev->out_urb->transfer_buffer_length = out->len; |
776 | |
777 | dev->in_urb->transfer_buffer = in->data; |
778 | dev->in_urb->transfer_buffer_length = in_len; |
779 | |
780 | print_hex_dump_debug("PORT100 TX: " , DUMP_PREFIX_NONE, 16, 1, |
781 | out->data, out->len, false); |
782 | |
783 | rc = usb_submit_urb(urb: dev->out_urb, GFP_KERNEL); |
784 | if (rc) |
785 | goto exit; |
786 | |
787 | rc = port100_submit_urb_for_ack(dev, GFP_KERNEL); |
788 | if (rc) |
789 | usb_kill_urb(urb: dev->out_urb); |
790 | |
791 | exit: |
792 | mutex_unlock(lock: &dev->out_urb_lock); |
793 | |
794 | return rc; |
795 | } |
796 | |
797 | static void port100_build_cmd_frame(struct port100 *dev, u8 cmd_code, |
798 | struct sk_buff *skb) |
799 | { |
800 | /* payload is already there, just update datalen */ |
801 | int payload_len = skb->len; |
802 | |
803 | skb_push(skb, PORT100_FRAME_HEADER_LEN); |
804 | skb_put(skb, PORT100_FRAME_TAIL_LEN); |
805 | |
806 | port100_tx_frame_init(frame: skb->data, cmd_code); |
807 | port100_tx_update_payload_len(frame: skb->data, len: payload_len); |
808 | port100_tx_frame_finish(frame: skb->data); |
809 | } |
810 | |
811 | static void port100_send_async_complete(struct port100 *dev) |
812 | { |
813 | struct port100_cmd *cmd = dev->cmd; |
814 | int status = cmd->status; |
815 | |
816 | struct sk_buff *req = cmd->req; |
817 | struct sk_buff *resp = cmd->resp; |
818 | |
819 | dev_kfree_skb(req); |
820 | |
821 | dev->cmd = NULL; |
822 | |
823 | if (status < 0) { |
824 | cmd->complete_cb(dev, cmd->complete_cb_context, |
825 | ERR_PTR(error: status)); |
826 | dev_kfree_skb(resp); |
827 | goto done; |
828 | } |
829 | |
830 | skb_put(skb: resp, len: port100_rx_frame_size(frame: resp->data)); |
831 | skb_pull(skb: resp, PORT100_FRAME_HEADER_LEN); |
832 | skb_trim(skb: resp, len: resp->len - PORT100_FRAME_TAIL_LEN); |
833 | |
834 | cmd->complete_cb(dev, cmd->complete_cb_context, resp); |
835 | |
836 | done: |
837 | kfree(objp: cmd); |
838 | } |
839 | |
840 | static int port100_send_cmd_async(struct port100 *dev, u8 cmd_code, |
841 | struct sk_buff *req, |
842 | port100_send_async_complete_t complete_cb, |
843 | void *complete_cb_context) |
844 | { |
845 | struct port100_cmd *cmd; |
846 | struct sk_buff *resp; |
847 | int rc; |
848 | int resp_len = PORT100_FRAME_HEADER_LEN + |
849 | PORT100_FRAME_MAX_PAYLOAD_LEN + |
850 | PORT100_FRAME_TAIL_LEN; |
851 | |
852 | if (dev->cmd) { |
853 | nfc_err(&dev->interface->dev, |
854 | "A command is still in process\n" ); |
855 | return -EBUSY; |
856 | } |
857 | |
858 | resp = alloc_skb(size: resp_len, GFP_KERNEL); |
859 | if (!resp) |
860 | return -ENOMEM; |
861 | |
862 | cmd = kzalloc(size: sizeof(*cmd), GFP_KERNEL); |
863 | if (!cmd) { |
864 | dev_kfree_skb(resp); |
865 | return -ENOMEM; |
866 | } |
867 | |
868 | cmd->code = cmd_code; |
869 | cmd->req = req; |
870 | cmd->resp = resp; |
871 | cmd->resp_len = resp_len; |
872 | cmd->complete_cb = complete_cb; |
873 | cmd->complete_cb_context = complete_cb_context; |
874 | |
875 | port100_build_cmd_frame(dev, cmd_code, skb: req); |
876 | |
877 | dev->cmd = cmd; |
878 | |
879 | rc = port100_send_frame_async(dev, out: req, in: resp, in_len: resp_len); |
880 | if (rc) { |
881 | kfree(objp: cmd); |
882 | dev_kfree_skb(resp); |
883 | dev->cmd = NULL; |
884 | } |
885 | |
886 | return rc; |
887 | } |
888 | |
889 | struct port100_sync_cmd_response { |
890 | struct sk_buff *resp; |
891 | struct completion done; |
892 | }; |
893 | |
894 | static void port100_wq_cmd_complete(struct work_struct *work) |
895 | { |
896 | struct port100 *dev = container_of(work, struct port100, |
897 | cmd_complete_work); |
898 | |
899 | port100_send_async_complete(dev); |
900 | } |
901 | |
902 | static void port100_send_sync_complete(struct port100 *dev, void *_arg, |
903 | struct sk_buff *resp) |
904 | { |
905 | struct port100_sync_cmd_response *arg = _arg; |
906 | |
907 | arg->resp = resp; |
908 | complete(&arg->done); |
909 | } |
910 | |
911 | static struct sk_buff *port100_send_cmd_sync(struct port100 *dev, u8 cmd_code, |
912 | struct sk_buff *req) |
913 | { |
914 | int rc; |
915 | struct port100_sync_cmd_response arg; |
916 | |
917 | init_completion(x: &arg.done); |
918 | |
919 | rc = port100_send_cmd_async(dev, cmd_code, req, |
920 | complete_cb: port100_send_sync_complete, complete_cb_context: &arg); |
921 | if (rc) { |
922 | dev_kfree_skb(req); |
923 | return ERR_PTR(error: rc); |
924 | } |
925 | |
926 | wait_for_completion(&arg.done); |
927 | |
928 | return arg.resp; |
929 | } |
930 | |
931 | static void port100_send_complete(struct urb *urb) |
932 | { |
933 | struct port100 *dev = urb->context; |
934 | |
935 | if (dev->cmd_cancel) { |
936 | complete_all(&dev->cmd_cancel_done); |
937 | dev->cmd_cancel = false; |
938 | } |
939 | |
940 | switch (urb->status) { |
941 | case 0: |
942 | break; /* success */ |
943 | case -ECONNRESET: |
944 | case -ENOENT: |
945 | nfc_dbg(&dev->interface->dev, |
946 | "The urb has been stopped (status %d)\n" , urb->status); |
947 | break; |
948 | case -ESHUTDOWN: |
949 | default: |
950 | nfc_err(&dev->interface->dev, "Urb failure (status %d)\n" , |
951 | urb->status); |
952 | } |
953 | } |
954 | |
955 | static void port100_abort_cmd(struct nfc_digital_dev *ddev) |
956 | { |
957 | struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
958 | |
959 | /* An ack will cancel the last issued command */ |
960 | port100_send_ack(dev); |
961 | |
962 | /* cancel the urb request */ |
963 | usb_kill_urb(urb: dev->in_urb); |
964 | } |
965 | |
966 | static struct sk_buff *port100_alloc_skb(const struct port100 *dev, unsigned int size) |
967 | { |
968 | struct sk_buff *skb; |
969 | |
970 | skb = alloc_skb(size: dev->skb_headroom + dev->skb_tailroom + size, |
971 | GFP_KERNEL); |
972 | if (skb) |
973 | skb_reserve(skb, len: dev->skb_headroom); |
974 | |
975 | return skb; |
976 | } |
977 | |
978 | static int port100_set_command_type(struct port100 *dev, u8 command_type) |
979 | { |
980 | struct sk_buff *skb; |
981 | struct sk_buff *resp; |
982 | int rc; |
983 | |
984 | skb = port100_alloc_skb(dev, size: 1); |
985 | if (!skb) |
986 | return -ENOMEM; |
987 | |
988 | skb_put_u8(skb, val: command_type); |
989 | |
990 | resp = port100_send_cmd_sync(dev, PORT100_CMD_SET_COMMAND_TYPE, req: skb); |
991 | if (IS_ERR(ptr: resp)) |
992 | return PTR_ERR(ptr: resp); |
993 | |
994 | rc = resp->data[0]; |
995 | |
996 | dev_kfree_skb(resp); |
997 | |
998 | return rc; |
999 | } |
1000 | |
1001 | static u64 port100_get_command_type_mask(struct port100 *dev) |
1002 | { |
1003 | struct sk_buff *skb; |
1004 | struct sk_buff *resp; |
1005 | u64 mask; |
1006 | |
1007 | skb = port100_alloc_skb(dev, size: 0); |
1008 | if (!skb) |
1009 | return 0; |
1010 | |
1011 | resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_COMMAND_TYPE, req: skb); |
1012 | if (IS_ERR(ptr: resp)) |
1013 | return 0; |
1014 | |
1015 | if (resp->len < 8) |
1016 | mask = 0; |
1017 | else |
1018 | mask = be64_to_cpu(*(__be64 *)resp->data); |
1019 | |
1020 | dev_kfree_skb(resp); |
1021 | |
1022 | return mask; |
1023 | } |
1024 | |
1025 | static u16 port100_get_firmware_version(struct port100 *dev) |
1026 | { |
1027 | struct sk_buff *skb; |
1028 | struct sk_buff *resp; |
1029 | u16 fw_ver; |
1030 | |
1031 | skb = port100_alloc_skb(dev, size: 0); |
1032 | if (!skb) |
1033 | return 0; |
1034 | |
1035 | resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_FIRMWARE_VERSION, |
1036 | req: skb); |
1037 | if (IS_ERR(ptr: resp)) |
1038 | return 0; |
1039 | |
1040 | fw_ver = le16_to_cpu(*(__le16 *)resp->data); |
1041 | |
1042 | dev_kfree_skb(resp); |
1043 | |
1044 | return fw_ver; |
1045 | } |
1046 | |
1047 | static int port100_switch_rf(struct nfc_digital_dev *ddev, bool on) |
1048 | { |
1049 | struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
1050 | struct sk_buff *skb, *resp; |
1051 | |
1052 | skb = port100_alloc_skb(dev, size: 1); |
1053 | if (!skb) |
1054 | return -ENOMEM; |
1055 | |
1056 | skb_put_u8(skb, val: on ? 1 : 0); |
1057 | |
1058 | /* Cancel the last command if the device is being switched off */ |
1059 | if (!on) |
1060 | port100_abort_cmd(ddev); |
1061 | |
1062 | resp = port100_send_cmd_sync(dev, PORT100_CMD_SWITCH_RF, req: skb); |
1063 | |
1064 | if (IS_ERR(ptr: resp)) |
1065 | return PTR_ERR(ptr: resp); |
1066 | |
1067 | dev_kfree_skb(resp); |
1068 | |
1069 | return 0; |
1070 | } |
1071 | |
1072 | static int port100_in_set_rf(struct nfc_digital_dev *ddev, u8 rf) |
1073 | { |
1074 | struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
1075 | struct sk_buff *skb; |
1076 | struct sk_buff *resp; |
1077 | int rc; |
1078 | |
1079 | if (rf >= NFC_DIGITAL_RF_TECH_LAST) |
1080 | return -EINVAL; |
1081 | |
1082 | skb = port100_alloc_skb(dev, size: sizeof(struct port100_in_rf_setting)); |
1083 | if (!skb) |
1084 | return -ENOMEM; |
1085 | |
1086 | skb_put_data(skb, data: &in_rf_settings[rf], |
1087 | len: sizeof(struct port100_in_rf_setting)); |
1088 | |
1089 | resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_RF, req: skb); |
1090 | |
1091 | if (IS_ERR(ptr: resp)) |
1092 | return PTR_ERR(ptr: resp); |
1093 | |
1094 | rc = resp->data[0]; |
1095 | |
1096 | dev_kfree_skb(resp); |
1097 | |
1098 | return rc; |
1099 | } |
1100 | |
1101 | static int port100_in_set_framing(struct nfc_digital_dev *ddev, int param) |
1102 | { |
1103 | struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
1104 | const struct port100_protocol *protocols; |
1105 | struct sk_buff *skb; |
1106 | struct sk_buff *resp; |
1107 | int num_protocols; |
1108 | size_t size; |
1109 | int rc; |
1110 | |
1111 | if (param >= NFC_DIGITAL_FRAMING_LAST) |
1112 | return -EINVAL; |
1113 | |
1114 | protocols = in_protocols[param]; |
1115 | |
1116 | num_protocols = 0; |
1117 | while (protocols[num_protocols].number != PORT100_IN_PROT_END) |
1118 | num_protocols++; |
1119 | |
1120 | if (!num_protocols) |
1121 | return 0; |
1122 | |
1123 | size = sizeof(struct port100_protocol) * num_protocols; |
1124 | |
1125 | skb = port100_alloc_skb(dev, size); |
1126 | if (!skb) |
1127 | return -ENOMEM; |
1128 | |
1129 | skb_put_data(skb, data: protocols, len: size); |
1130 | |
1131 | resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_PROTOCOL, req: skb); |
1132 | |
1133 | if (IS_ERR(ptr: resp)) |
1134 | return PTR_ERR(ptr: resp); |
1135 | |
1136 | rc = resp->data[0]; |
1137 | |
1138 | dev_kfree_skb(resp); |
1139 | |
1140 | return rc; |
1141 | } |
1142 | |
1143 | static int port100_in_configure_hw(struct nfc_digital_dev *ddev, int type, |
1144 | int param) |
1145 | { |
1146 | if (type == NFC_DIGITAL_CONFIG_RF_TECH) |
1147 | return port100_in_set_rf(ddev, rf: param); |
1148 | |
1149 | if (type == NFC_DIGITAL_CONFIG_FRAMING) |
1150 | return port100_in_set_framing(ddev, param); |
1151 | |
1152 | return -EINVAL; |
1153 | } |
1154 | |
1155 | static void port100_in_comm_rf_complete(struct port100 *dev, void *arg, |
1156 | struct sk_buff *resp) |
1157 | { |
1158 | const struct port100_cb_arg *cb_arg = arg; |
1159 | nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; |
1160 | u32 status; |
1161 | int rc; |
1162 | |
1163 | if (IS_ERR(ptr: resp)) { |
1164 | rc = PTR_ERR(ptr: resp); |
1165 | goto exit; |
1166 | } |
1167 | |
1168 | if (resp->len < 4) { |
1169 | nfc_err(&dev->interface->dev, |
1170 | "Invalid packet length received\n" ); |
1171 | rc = -EIO; |
1172 | goto error; |
1173 | } |
1174 | |
1175 | status = le32_to_cpu(*(__le32 *)resp->data); |
1176 | |
1177 | skb_pull(skb: resp, len: sizeof(u32)); |
1178 | |
1179 | if (status == PORT100_CMD_STATUS_TIMEOUT) { |
1180 | rc = -ETIMEDOUT; |
1181 | goto error; |
1182 | } |
1183 | |
1184 | if (status != PORT100_CMD_STATUS_OK) { |
1185 | nfc_err(&dev->interface->dev, |
1186 | "in_comm_rf failed with status 0x%08x\n" , status); |
1187 | rc = -EIO; |
1188 | goto error; |
1189 | } |
1190 | |
1191 | /* Remove collision bits byte */ |
1192 | skb_pull(skb: resp, len: 1); |
1193 | |
1194 | goto exit; |
1195 | |
1196 | error: |
1197 | kfree_skb(skb: resp); |
1198 | resp = ERR_PTR(error: rc); |
1199 | |
1200 | exit: |
1201 | cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp); |
1202 | |
1203 | kfree(objp: cb_arg); |
1204 | } |
1205 | |
1206 | static int port100_in_send_cmd(struct nfc_digital_dev *ddev, |
1207 | struct sk_buff *skb, u16 _timeout, |
1208 | nfc_digital_cmd_complete_t cb, void *arg) |
1209 | { |
1210 | struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
1211 | struct port100_cb_arg *cb_arg; |
1212 | __le16 timeout; |
1213 | |
1214 | cb_arg = kzalloc(size: sizeof(struct port100_cb_arg), GFP_KERNEL); |
1215 | if (!cb_arg) |
1216 | return -ENOMEM; |
1217 | |
1218 | cb_arg->complete_cb = cb; |
1219 | cb_arg->complete_arg = arg; |
1220 | |
1221 | timeout = cpu_to_le16(_timeout * 10); |
1222 | |
1223 | memcpy(skb_push(skb, sizeof(__le16)), &timeout, sizeof(__le16)); |
1224 | |
1225 | return port100_send_cmd_async(dev, PORT100_CMD_IN_COMM_RF, req: skb, |
1226 | complete_cb: port100_in_comm_rf_complete, complete_cb_context: cb_arg); |
1227 | } |
1228 | |
1229 | static int port100_tg_set_rf(struct nfc_digital_dev *ddev, u8 rf) |
1230 | { |
1231 | struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
1232 | struct sk_buff *skb; |
1233 | struct sk_buff *resp; |
1234 | int rc; |
1235 | |
1236 | if (rf >= NFC_DIGITAL_RF_TECH_LAST) |
1237 | return -EINVAL; |
1238 | |
1239 | skb = port100_alloc_skb(dev, size: sizeof(struct port100_tg_rf_setting)); |
1240 | if (!skb) |
1241 | return -ENOMEM; |
1242 | |
1243 | skb_put_data(skb, data: &tg_rf_settings[rf], |
1244 | len: sizeof(struct port100_tg_rf_setting)); |
1245 | |
1246 | resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_RF, req: skb); |
1247 | |
1248 | if (IS_ERR(ptr: resp)) |
1249 | return PTR_ERR(ptr: resp); |
1250 | |
1251 | rc = resp->data[0]; |
1252 | |
1253 | dev_kfree_skb(resp); |
1254 | |
1255 | return rc; |
1256 | } |
1257 | |
1258 | static int port100_tg_set_framing(struct nfc_digital_dev *ddev, int param) |
1259 | { |
1260 | struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
1261 | const struct port100_protocol *protocols; |
1262 | struct sk_buff *skb; |
1263 | struct sk_buff *resp; |
1264 | int rc; |
1265 | int num_protocols; |
1266 | size_t size; |
1267 | |
1268 | if (param >= NFC_DIGITAL_FRAMING_LAST) |
1269 | return -EINVAL; |
1270 | |
1271 | protocols = tg_protocols[param]; |
1272 | |
1273 | num_protocols = 0; |
1274 | while (protocols[num_protocols].number != PORT100_TG_PROT_END) |
1275 | num_protocols++; |
1276 | |
1277 | if (!num_protocols) |
1278 | return 0; |
1279 | |
1280 | size = sizeof(struct port100_protocol) * num_protocols; |
1281 | |
1282 | skb = port100_alloc_skb(dev, size); |
1283 | if (!skb) |
1284 | return -ENOMEM; |
1285 | |
1286 | skb_put_data(skb, data: protocols, len: size); |
1287 | |
1288 | resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_PROTOCOL, req: skb); |
1289 | |
1290 | if (IS_ERR(ptr: resp)) |
1291 | return PTR_ERR(ptr: resp); |
1292 | |
1293 | rc = resp->data[0]; |
1294 | |
1295 | dev_kfree_skb(resp); |
1296 | |
1297 | return rc; |
1298 | } |
1299 | |
1300 | static int port100_tg_configure_hw(struct nfc_digital_dev *ddev, int type, |
1301 | int param) |
1302 | { |
1303 | if (type == NFC_DIGITAL_CONFIG_RF_TECH) |
1304 | return port100_tg_set_rf(ddev, rf: param); |
1305 | |
1306 | if (type == NFC_DIGITAL_CONFIG_FRAMING) |
1307 | return port100_tg_set_framing(ddev, param); |
1308 | |
1309 | return -EINVAL; |
1310 | } |
1311 | |
1312 | static bool port100_tg_target_activated(struct port100 *dev, u8 tgt_activated) |
1313 | { |
1314 | u8 mask; |
1315 | |
1316 | switch (dev->cmd_type) { |
1317 | case PORT100_CMD_TYPE_0: |
1318 | mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK; |
1319 | break; |
1320 | case PORT100_CMD_TYPE_1: |
1321 | mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK | |
1322 | PORT100_MDAA_TGT_WAS_ACTIVATED_MASK; |
1323 | break; |
1324 | default: |
1325 | nfc_err(&dev->interface->dev, "Unknown command type\n" ); |
1326 | return false; |
1327 | } |
1328 | |
1329 | return ((tgt_activated & mask) == mask); |
1330 | } |
1331 | |
1332 | static void port100_tg_comm_rf_complete(struct port100 *dev, void *arg, |
1333 | struct sk_buff *resp) |
1334 | { |
1335 | u32 status; |
1336 | const struct port100_cb_arg *cb_arg = arg; |
1337 | nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; |
1338 | struct port100_tg_comm_rf_res *hdr; |
1339 | |
1340 | if (IS_ERR(ptr: resp)) |
1341 | goto exit; |
1342 | |
1343 | hdr = (struct port100_tg_comm_rf_res *)resp->data; |
1344 | |
1345 | status = le32_to_cpu(hdr->status); |
1346 | |
1347 | if (cb_arg->mdaa && |
1348 | !port100_tg_target_activated(dev, tgt_activated: hdr->target_activated)) { |
1349 | kfree_skb(skb: resp); |
1350 | resp = ERR_PTR(error: -ETIMEDOUT); |
1351 | |
1352 | goto exit; |
1353 | } |
1354 | |
1355 | skb_pull(skb: resp, len: sizeof(struct port100_tg_comm_rf_res)); |
1356 | |
1357 | if (status != PORT100_CMD_STATUS_OK) { |
1358 | kfree_skb(skb: resp); |
1359 | |
1360 | if (status == PORT100_CMD_STATUS_TIMEOUT) |
1361 | resp = ERR_PTR(error: -ETIMEDOUT); |
1362 | else |
1363 | resp = ERR_PTR(error: -EIO); |
1364 | } |
1365 | |
1366 | exit: |
1367 | cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp); |
1368 | |
1369 | kfree(objp: cb_arg); |
1370 | } |
1371 | |
1372 | static int port100_tg_send_cmd(struct nfc_digital_dev *ddev, |
1373 | struct sk_buff *skb, u16 timeout, |
1374 | nfc_digital_cmd_complete_t cb, void *arg) |
1375 | { |
1376 | struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
1377 | struct port100_tg_comm_rf_cmd *hdr; |
1378 | struct port100_cb_arg *cb_arg; |
1379 | |
1380 | cb_arg = kzalloc(size: sizeof(struct port100_cb_arg), GFP_KERNEL); |
1381 | if (!cb_arg) |
1382 | return -ENOMEM; |
1383 | |
1384 | cb_arg->complete_cb = cb; |
1385 | cb_arg->complete_arg = arg; |
1386 | |
1387 | skb_push(skb, len: sizeof(struct port100_tg_comm_rf_cmd)); |
1388 | |
1389 | hdr = (struct port100_tg_comm_rf_cmd *)skb->data; |
1390 | |
1391 | memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); |
1392 | hdr->guard_time = cpu_to_le16(500); |
1393 | hdr->send_timeout = cpu_to_le16(0xFFFF); |
1394 | hdr->recv_timeout = cpu_to_le16(timeout); |
1395 | |
1396 | return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, req: skb, |
1397 | complete_cb: port100_tg_comm_rf_complete, complete_cb_context: cb_arg); |
1398 | } |
1399 | |
1400 | static int port100_listen_mdaa(struct nfc_digital_dev *ddev, |
1401 | struct digital_tg_mdaa_params *params, |
1402 | u16 timeout, |
1403 | nfc_digital_cmd_complete_t cb, void *arg) |
1404 | { |
1405 | struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
1406 | struct port100_tg_comm_rf_cmd *hdr; |
1407 | struct port100_cb_arg *cb_arg; |
1408 | struct sk_buff *skb; |
1409 | int rc; |
1410 | |
1411 | rc = port100_tg_configure_hw(ddev, type: NFC_DIGITAL_CONFIG_RF_TECH, |
1412 | param: NFC_DIGITAL_RF_TECH_106A); |
1413 | if (rc) |
1414 | return rc; |
1415 | |
1416 | rc = port100_tg_configure_hw(ddev, type: NFC_DIGITAL_CONFIG_FRAMING, |
1417 | param: NFC_DIGITAL_FRAMING_NFCA_NFC_DEP); |
1418 | if (rc) |
1419 | return rc; |
1420 | |
1421 | cb_arg = kzalloc(size: sizeof(struct port100_cb_arg), GFP_KERNEL); |
1422 | if (!cb_arg) |
1423 | return -ENOMEM; |
1424 | |
1425 | cb_arg->complete_cb = cb; |
1426 | cb_arg->complete_arg = arg; |
1427 | cb_arg->mdaa = 1; |
1428 | |
1429 | skb = port100_alloc_skb(dev, size: 0); |
1430 | if (!skb) { |
1431 | kfree(objp: cb_arg); |
1432 | return -ENOMEM; |
1433 | } |
1434 | |
1435 | skb_push(skb, len: sizeof(struct port100_tg_comm_rf_cmd)); |
1436 | hdr = (struct port100_tg_comm_rf_cmd *)skb->data; |
1437 | |
1438 | memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); |
1439 | |
1440 | hdr->guard_time = 0; |
1441 | hdr->send_timeout = cpu_to_le16(0xFFFF); |
1442 | hdr->mdaa = 1; |
1443 | hdr->nfca_param[0] = (params->sens_res >> 8) & 0xFF; |
1444 | hdr->nfca_param[1] = params->sens_res & 0xFF; |
1445 | memcpy(hdr->nfca_param + 2, params->nfcid1, 3); |
1446 | hdr->nfca_param[5] = params->sel_res; |
1447 | memcpy(hdr->nfcf_param, params->nfcid2, 8); |
1448 | hdr->nfcf_param[16] = (params->sc >> 8) & 0xFF; |
1449 | hdr->nfcf_param[17] = params->sc & 0xFF; |
1450 | hdr->recv_timeout = cpu_to_le16(timeout); |
1451 | |
1452 | return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, req: skb, |
1453 | complete_cb: port100_tg_comm_rf_complete, complete_cb_context: cb_arg); |
1454 | } |
1455 | |
1456 | static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout, |
1457 | nfc_digital_cmd_complete_t cb, void *arg) |
1458 | { |
1459 | const struct port100 *dev = nfc_digital_get_drvdata(dev: ddev); |
1460 | struct sk_buff *skb; |
1461 | |
1462 | skb = port100_alloc_skb(dev, size: 0); |
1463 | if (!skb) |
1464 | return -ENOMEM; |
1465 | |
1466 | return port100_tg_send_cmd(ddev, skb, timeout, cb, arg); |
1467 | } |
1468 | |
1469 | static const struct nfc_digital_ops port100_digital_ops = { |
1470 | .in_configure_hw = port100_in_configure_hw, |
1471 | .in_send_cmd = port100_in_send_cmd, |
1472 | |
1473 | .tg_listen_mdaa = port100_listen_mdaa, |
1474 | .tg_listen = port100_listen, |
1475 | .tg_configure_hw = port100_tg_configure_hw, |
1476 | .tg_send_cmd = port100_tg_send_cmd, |
1477 | |
1478 | .switch_rf = port100_switch_rf, |
1479 | .abort_cmd = port100_abort_cmd, |
1480 | }; |
1481 | |
1482 | static const struct usb_device_id port100_table[] = { |
1483 | { USB_DEVICE(SONY_VENDOR_ID, RCS380S_PRODUCT_ID), }, |
1484 | { USB_DEVICE(SONY_VENDOR_ID, RCS380P_PRODUCT_ID), }, |
1485 | { } |
1486 | }; |
1487 | MODULE_DEVICE_TABLE(usb, port100_table); |
1488 | |
1489 | static int port100_probe(struct usb_interface *interface, |
1490 | const struct usb_device_id *id) |
1491 | { |
1492 | struct port100 *dev; |
1493 | int rc; |
1494 | struct usb_host_interface *iface_desc; |
1495 | struct usb_endpoint_descriptor *endpoint; |
1496 | int in_endpoint; |
1497 | int out_endpoint; |
1498 | u16 fw_version; |
1499 | u64 cmd_type_mask; |
1500 | int i; |
1501 | |
1502 | dev = devm_kzalloc(dev: &interface->dev, size: sizeof(struct port100), GFP_KERNEL); |
1503 | if (!dev) |
1504 | return -ENOMEM; |
1505 | |
1506 | mutex_init(&dev->out_urb_lock); |
1507 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); |
1508 | dev->interface = interface; |
1509 | usb_set_intfdata(intf: interface, data: dev); |
1510 | |
1511 | in_endpoint = out_endpoint = 0; |
1512 | iface_desc = interface->cur_altsetting; |
1513 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
1514 | endpoint = &iface_desc->endpoint[i].desc; |
1515 | |
1516 | if (!in_endpoint && usb_endpoint_is_bulk_in(epd: endpoint)) |
1517 | in_endpoint = endpoint->bEndpointAddress; |
1518 | |
1519 | if (!out_endpoint && usb_endpoint_is_bulk_out(epd: endpoint)) |
1520 | out_endpoint = endpoint->bEndpointAddress; |
1521 | } |
1522 | |
1523 | if (!in_endpoint || !out_endpoint) { |
1524 | nfc_err(&interface->dev, |
1525 | "Could not find bulk-in or bulk-out endpoint\n" ); |
1526 | rc = -ENODEV; |
1527 | goto error; |
1528 | } |
1529 | |
1530 | dev->in_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
1531 | dev->out_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
1532 | |
1533 | if (!dev->in_urb || !dev->out_urb) { |
1534 | nfc_err(&interface->dev, "Could not allocate USB URBs\n" ); |
1535 | rc = -ENOMEM; |
1536 | goto error; |
1537 | } |
1538 | |
1539 | usb_fill_bulk_urb(urb: dev->in_urb, dev: dev->udev, |
1540 | usb_rcvbulkpipe(dev->udev, in_endpoint), |
1541 | NULL, buffer_length: 0, NULL, context: dev); |
1542 | usb_fill_bulk_urb(urb: dev->out_urb, dev: dev->udev, |
1543 | usb_sndbulkpipe(dev->udev, out_endpoint), |
1544 | NULL, buffer_length: 0, complete_fn: port100_send_complete, context: dev); |
1545 | dev->out_urb->transfer_flags = URB_ZERO_PACKET; |
1546 | |
1547 | dev->skb_headroom = PORT100_FRAME_HEADER_LEN + |
1548 | PORT100_COMM_RF_HEAD_MAX_LEN; |
1549 | dev->skb_tailroom = PORT100_FRAME_TAIL_LEN; |
1550 | |
1551 | init_completion(x: &dev->cmd_cancel_done); |
1552 | INIT_WORK(&dev->cmd_complete_work, port100_wq_cmd_complete); |
1553 | |
1554 | /* The first thing to do with the Port-100 is to set the command type |
1555 | * to be used. If supported we use command type 1. 0 otherwise. |
1556 | */ |
1557 | cmd_type_mask = port100_get_command_type_mask(dev); |
1558 | if (!cmd_type_mask) { |
1559 | nfc_err(&interface->dev, |
1560 | "Could not get supported command types\n" ); |
1561 | rc = -ENODEV; |
1562 | goto error; |
1563 | } |
1564 | |
1565 | if (PORT100_CMD_TYPE_IS_SUPPORTED(cmd_type_mask, PORT100_CMD_TYPE_1)) |
1566 | dev->cmd_type = PORT100_CMD_TYPE_1; |
1567 | else |
1568 | dev->cmd_type = PORT100_CMD_TYPE_0; |
1569 | |
1570 | rc = port100_set_command_type(dev, command_type: dev->cmd_type); |
1571 | if (rc) { |
1572 | nfc_err(&interface->dev, |
1573 | "The device does not support command type %u\n" , |
1574 | dev->cmd_type); |
1575 | goto error; |
1576 | } |
1577 | |
1578 | fw_version = port100_get_firmware_version(dev); |
1579 | if (!fw_version) |
1580 | nfc_err(&interface->dev, |
1581 | "Could not get device firmware version\n" ); |
1582 | |
1583 | nfc_info(&interface->dev, |
1584 | "Sony NFC Port-100 Series attached (firmware v%x.%02x)\n" , |
1585 | (fw_version & 0xFF00) >> 8, fw_version & 0xFF); |
1586 | |
1587 | dev->nfc_digital_dev = nfc_digital_allocate_device(ops: &port100_digital_ops, |
1588 | PORT100_PROTOCOLS, |
1589 | PORT100_CAPABILITIES, |
1590 | tx_headroom: dev->skb_headroom, |
1591 | tx_tailroom: dev->skb_tailroom); |
1592 | if (!dev->nfc_digital_dev) { |
1593 | nfc_err(&interface->dev, |
1594 | "Could not allocate nfc_digital_dev\n" ); |
1595 | rc = -ENOMEM; |
1596 | goto error; |
1597 | } |
1598 | |
1599 | nfc_digital_set_parent_dev(ndev: dev->nfc_digital_dev, dev: &interface->dev); |
1600 | nfc_digital_set_drvdata(dev: dev->nfc_digital_dev, data: dev); |
1601 | |
1602 | rc = nfc_digital_register_device(ndev: dev->nfc_digital_dev); |
1603 | if (rc) { |
1604 | nfc_err(&interface->dev, |
1605 | "Could not register digital device\n" ); |
1606 | goto free_nfc_dev; |
1607 | } |
1608 | |
1609 | return 0; |
1610 | |
1611 | free_nfc_dev: |
1612 | nfc_digital_free_device(ndev: dev->nfc_digital_dev); |
1613 | |
1614 | error: |
1615 | usb_kill_urb(urb: dev->in_urb); |
1616 | usb_free_urb(urb: dev->in_urb); |
1617 | usb_kill_urb(urb: dev->out_urb); |
1618 | usb_free_urb(urb: dev->out_urb); |
1619 | usb_put_dev(dev: dev->udev); |
1620 | |
1621 | return rc; |
1622 | } |
1623 | |
1624 | static void port100_disconnect(struct usb_interface *interface) |
1625 | { |
1626 | struct port100 *dev; |
1627 | |
1628 | dev = usb_get_intfdata(intf: interface); |
1629 | usb_set_intfdata(intf: interface, NULL); |
1630 | |
1631 | nfc_digital_unregister_device(ndev: dev->nfc_digital_dev); |
1632 | nfc_digital_free_device(ndev: dev->nfc_digital_dev); |
1633 | |
1634 | usb_kill_urb(urb: dev->in_urb); |
1635 | usb_kill_urb(urb: dev->out_urb); |
1636 | |
1637 | usb_free_urb(urb: dev->in_urb); |
1638 | usb_free_urb(urb: dev->out_urb); |
1639 | usb_put_dev(dev: dev->udev); |
1640 | |
1641 | kfree(objp: dev->cmd); |
1642 | |
1643 | nfc_info(&interface->dev, "Sony Port-100 NFC device disconnected\n" ); |
1644 | } |
1645 | |
1646 | static struct usb_driver port100_driver = { |
1647 | .name = "port100" , |
1648 | .probe = port100_probe, |
1649 | .disconnect = port100_disconnect, |
1650 | .id_table = port100_table, |
1651 | }; |
1652 | |
1653 | module_usb_driver(port100_driver); |
1654 | |
1655 | MODULE_DESCRIPTION("NFC Port-100 series usb driver ver " VERSION); |
1656 | MODULE_VERSION(VERSION); |
1657 | MODULE_LICENSE("GPL" ); |
1658 | |