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3731a334 AO |
1 | /* |
2 | * Driver for Microchip MRF24J40 802.15.4 Wireless-PAN Networking controller | |
3 | * | |
4 | * Copyright (C) 2012 Alan Ott <alan@signal11.us> | |
5 | * Signal 11 Software | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
3731a334 AO |
16 | */ |
17 | ||
18 | #include <linux/spi/spi.h> | |
19 | #include <linux/interrupt.h> | |
20 | #include <linux/module.h> | |
b0156792 | 21 | #include <linux/regmap.h> |
4ca24aca | 22 | #include <linux/ieee802154.h> |
afaf7fde | 23 | #include <linux/irq.h> |
5ad60d36 | 24 | #include <net/cfg802154.h> |
3731a334 AO |
25 | #include <net/mac802154.h> |
26 | ||
27 | /* MRF24J40 Short Address Registers */ | |
c9f883f6 | 28 | #define REG_RXMCR 0x00 /* Receive MAC control */ |
7d840545 AA |
29 | #define BIT_PROMI BIT(0) |
30 | #define BIT_ERRPKT BIT(1) | |
31 | #define BIT_NOACKRSP BIT(5) | |
32 | #define BIT_PANCOORD BIT(3) | |
33 | ||
c9f883f6 AA |
34 | #define REG_PANIDL 0x01 /* PAN ID (low) */ |
35 | #define REG_PANIDH 0x02 /* PAN ID (high) */ | |
36 | #define REG_SADRL 0x03 /* Short address (low) */ | |
37 | #define REG_SADRH 0x04 /* Short address (high) */ | |
38 | #define REG_EADR0 0x05 /* Long address (low) (high is EADR7) */ | |
554b4949 AA |
39 | #define REG_EADR1 0x06 |
40 | #define REG_EADR2 0x07 | |
41 | #define REG_EADR3 0x08 | |
42 | #define REG_EADR4 0x09 | |
43 | #define REG_EADR5 0x0A | |
44 | #define REG_EADR6 0x0B | |
45 | #define REG_EADR7 0x0C | |
46 | #define REG_RXFLUSH 0x0D | |
47 | #define REG_ORDER 0x10 | |
c9f883f6 | 48 | #define REG_TXMCR 0x11 /* Transmit MAC control */ |
7d840545 AA |
49 | #define TXMCR_MIN_BE_SHIFT 3 |
50 | #define TXMCR_MIN_BE_MASK 0x18 | |
51 | #define TXMCR_CSMA_RETRIES_SHIFT 0 | |
52 | #define TXMCR_CSMA_RETRIES_MASK 0x07 | |
53 | ||
554b4949 AA |
54 | #define REG_ACKTMOUT 0x12 |
55 | #define REG_ESLOTG1 0x13 | |
56 | #define REG_SYMTICKL 0x14 | |
57 | #define REG_SYMTICKH 0x15 | |
c9f883f6 AA |
58 | #define REG_PACON0 0x16 /* Power Amplifier Control */ |
59 | #define REG_PACON1 0x17 /* Power Amplifier Control */ | |
60 | #define REG_PACON2 0x18 /* Power Amplifier Control */ | |
554b4949 | 61 | #define REG_TXBCON0 0x1A |
c9f883f6 | 62 | #define REG_TXNCON 0x1B /* Transmit Normal FIFO Control */ |
7d840545 AA |
63 | #define BIT_TXNTRIG BIT(0) |
64 | #define BIT_TXNACKREQ BIT(2) | |
65 | ||
554b4949 AA |
66 | #define REG_TXG1CON 0x1C |
67 | #define REG_TXG2CON 0x1D | |
68 | #define REG_ESLOTG23 0x1E | |
69 | #define REG_ESLOTG45 0x1F | |
70 | #define REG_ESLOTG67 0x20 | |
71 | #define REG_TXPEND 0x21 | |
72 | #define REG_WAKECON 0x22 | |
73 | #define REG_FROMOFFSET 0x23 | |
c9f883f6 | 74 | #define REG_TXSTAT 0x24 /* TX MAC Status Register */ |
554b4949 AA |
75 | #define REG_TXBCON1 0x25 |
76 | #define REG_GATECLK 0x26 | |
77 | #define REG_TXTIME 0x27 | |
78 | #define REG_HSYMTMRL 0x28 | |
79 | #define REG_HSYMTMRH 0x29 | |
c9f883f6 | 80 | #define REG_SOFTRST 0x2A /* Soft Reset */ |
554b4949 AA |
81 | #define REG_SECCON0 0x2C |
82 | #define REG_SECCON1 0x2D | |
c9f883f6 | 83 | #define REG_TXSTBL 0x2E /* TX Stabilization */ |
554b4949 | 84 | #define REG_RXSR 0x30 |
c9f883f6 | 85 | #define REG_INTSTAT 0x31 /* Interrupt Status */ |
7d840545 AA |
86 | #define BIT_TXNIF BIT(0) |
87 | #define BIT_RXIF BIT(3) | |
88 | ||
c9f883f6 | 89 | #define REG_INTCON 0x32 /* Interrupt Control */ |
7d840545 AA |
90 | #define BIT_TXNIE BIT(0) |
91 | #define BIT_RXIE BIT(3) | |
92 | ||
c9f883f6 AA |
93 | #define REG_GPIO 0x33 /* GPIO */ |
94 | #define REG_TRISGPIO 0x34 /* GPIO direction */ | |
554b4949 | 95 | #define REG_SLPACK 0x35 |
c9f883f6 | 96 | #define REG_RFCTL 0x36 /* RF Control Mode Register */ |
7d840545 AA |
97 | #define BIT_RFRST BIT(2) |
98 | ||
554b4949 AA |
99 | #define REG_SECCR2 0x37 |
100 | #define REG_BBREG0 0x38 | |
c9f883f6 | 101 | #define REG_BBREG1 0x39 /* Baseband Registers */ |
7d840545 AA |
102 | #define BIT_RXDECINV BIT(2) |
103 | ||
c9f883f6 | 104 | #define REG_BBREG2 0x3A /* */ |
7d840545 AA |
105 | #define BBREG2_CCA_MODE_SHIFT 6 |
106 | #define BBREG2_CCA_MODE_MASK 0xc0 | |
107 | ||
554b4949 AA |
108 | #define REG_BBREG3 0x3B |
109 | #define REG_BBREG4 0x3C | |
c9f883f6 AA |
110 | #define REG_BBREG6 0x3E /* */ |
111 | #define REG_CCAEDTH 0x3F /* Energy Detection Threshold */ | |
3731a334 AO |
112 | |
113 | /* MRF24J40 Long Address Registers */ | |
c9f883f6 | 114 | #define REG_RFCON0 0x200 /* RF Control Registers */ |
7d840545 AA |
115 | #define RFCON0_CH_SHIFT 4 |
116 | #define RFCON0_CH_MASK 0xf0 | |
117 | #define RFOPT_RECOMMEND 3 | |
118 | ||
c9f883f6 AA |
119 | #define REG_RFCON1 0x201 |
120 | #define REG_RFCON2 0x202 | |
121 | #define REG_RFCON3 0x203 | |
7d840545 AA |
122 | |
123 | #define TXPWRL_MASK 0xc0 | |
124 | #define TXPWRL_SHIFT 6 | |
125 | #define TXPWRL_30 0x3 | |
126 | #define TXPWRL_20 0x2 | |
127 | #define TXPWRL_10 0x1 | |
128 | #define TXPWRL_0 0x0 | |
129 | ||
130 | #define TXPWRS_MASK 0x38 | |
131 | #define TXPWRS_SHIFT 3 | |
132 | #define TXPWRS_6_3 0x7 | |
133 | #define TXPWRS_4_9 0x6 | |
134 | #define TXPWRS_3_7 0x5 | |
135 | #define TXPWRS_2_8 0x4 | |
136 | #define TXPWRS_1_9 0x3 | |
137 | #define TXPWRS_1_2 0x2 | |
138 | #define TXPWRS_0_5 0x1 | |
139 | #define TXPWRS_0 0x0 | |
140 | ||
c9f883f6 AA |
141 | #define REG_RFCON5 0x205 |
142 | #define REG_RFCON6 0x206 | |
143 | #define REG_RFCON7 0x207 | |
144 | #define REG_RFCON8 0x208 | |
554b4949 AA |
145 | #define REG_SLPCAL0 0x209 |
146 | #define REG_SLPCAL1 0x20A | |
147 | #define REG_SLPCAL2 0x20B | |
148 | #define REG_RFSTATE 0x20F | |
c9f883f6 AA |
149 | #define REG_RSSI 0x210 |
150 | #define REG_SLPCON0 0x211 /* Sleep Clock Control Registers */ | |
7d840545 AA |
151 | #define BIT_INTEDGE BIT(1) |
152 | ||
c9f883f6 AA |
153 | #define REG_SLPCON1 0x220 |
154 | #define REG_WAKETIMEL 0x222 /* Wake-up Time Match Value Low */ | |
155 | #define REG_WAKETIMEH 0x223 /* Wake-up Time Match Value High */ | |
554b4949 AA |
156 | #define REG_REMCNTL 0x224 |
157 | #define REG_REMCNTH 0x225 | |
158 | #define REG_MAINCNT0 0x226 | |
159 | #define REG_MAINCNT1 0x227 | |
160 | #define REG_MAINCNT2 0x228 | |
161 | #define REG_MAINCNT3 0x229 | |
c9f883f6 | 162 | #define REG_TESTMODE 0x22F /* Test mode */ |
554b4949 AA |
163 | #define REG_ASSOEAR0 0x230 |
164 | #define REG_ASSOEAR1 0x231 | |
165 | #define REG_ASSOEAR2 0x232 | |
166 | #define REG_ASSOEAR3 0x233 | |
167 | #define REG_ASSOEAR4 0x234 | |
168 | #define REG_ASSOEAR5 0x235 | |
169 | #define REG_ASSOEAR6 0x236 | |
170 | #define REG_ASSOEAR7 0x237 | |
171 | #define REG_ASSOSAR0 0x238 | |
172 | #define REG_ASSOSAR1 0x239 | |
173 | #define REG_UNONCE0 0x240 | |
174 | #define REG_UNONCE1 0x241 | |
175 | #define REG_UNONCE2 0x242 | |
176 | #define REG_UNONCE3 0x243 | |
177 | #define REG_UNONCE4 0x244 | |
178 | #define REG_UNONCE5 0x245 | |
179 | #define REG_UNONCE6 0x246 | |
180 | #define REG_UNONCE7 0x247 | |
181 | #define REG_UNONCE8 0x248 | |
182 | #define REG_UNONCE9 0x249 | |
183 | #define REG_UNONCE10 0x24A | |
184 | #define REG_UNONCE11 0x24B | |
185 | #define REG_UNONCE12 0x24C | |
c9f883f6 | 186 | #define REG_RX_FIFO 0x300 /* Receive FIFO */ |
3731a334 AO |
187 | |
188 | /* Device configuration: Only channels 11-26 on page 0 are supported. */ | |
189 | #define MRF24J40_CHAN_MIN 11 | |
190 | #define MRF24J40_CHAN_MAX 26 | |
191 | #define CHANNEL_MASK (((u32)1 << (MRF24J40_CHAN_MAX + 1)) \ | |
192 | - ((u32)1 << MRF24J40_CHAN_MIN)) | |
193 | ||
194 | #define TX_FIFO_SIZE 128 /* From datasheet */ | |
195 | #define RX_FIFO_SIZE 144 /* From datasheet */ | |
196 | #define SET_CHANNEL_DELAY_US 192 /* From datasheet */ | |
197 | ||
db9e0ee8 SV |
198 | enum mrf24j40_modules { MRF24J40, MRF24J40MA, MRF24J40MC }; |
199 | ||
3731a334 AO |
200 | /* Device Private Data */ |
201 | struct mrf24j40 { | |
202 | struct spi_device *spi; | |
5a504397 | 203 | struct ieee802154_hw *hw; |
3731a334 | 204 | |
b0156792 AA |
205 | struct regmap *regmap_short; |
206 | struct regmap *regmap_long; | |
6844a0e4 AA |
207 | |
208 | /* for writing txfifo */ | |
209 | struct spi_message tx_msg; | |
210 | u8 tx_hdr_buf[2]; | |
211 | struct spi_transfer tx_hdr_trx; | |
212 | u8 tx_len_buf[2]; | |
213 | struct spi_transfer tx_len_trx; | |
214 | struct spi_transfer tx_buf_trx; | |
215 | struct sk_buff *tx_skb; | |
216 | ||
217 | /* post transmit message to send frame out */ | |
218 | struct spi_message tx_post_msg; | |
219 | u8 tx_post_buf[2]; | |
220 | struct spi_transfer tx_post_trx; | |
221 | ||
c91a3011 AA |
222 | /* for protect/unprotect/read length rxfifo */ |
223 | struct spi_message rx_msg; | |
224 | u8 rx_buf[3]; | |
225 | struct spi_transfer rx_trx; | |
226 | ||
227 | /* receive handling */ | |
228 | struct spi_message rx_buf_msg; | |
229 | u8 rx_addr_buf[2]; | |
230 | struct spi_transfer rx_addr_trx; | |
231 | u8 rx_lqi_buf[2]; | |
232 | struct spi_transfer rx_lqi_trx; | |
233 | u8 rx_fifo_buf[RX_FIFO_SIZE]; | |
234 | struct spi_transfer rx_fifo_buf_trx; | |
235 | ||
37441611 AA |
236 | /* isr handling for reading intstat */ |
237 | struct spi_message irq_msg; | |
238 | u8 irq_buf[2]; | |
239 | struct spi_transfer irq_trx; | |
3731a334 AO |
240 | }; |
241 | ||
b0156792 AA |
242 | /* regmap information for short address register access */ |
243 | #define MRF24J40_SHORT_WRITE 0x01 | |
244 | #define MRF24J40_SHORT_READ 0x00 | |
245 | #define MRF24J40_SHORT_NUMREGS 0x3F | |
246 | ||
247 | /* regmap information for long address register access */ | |
248 | #define MRF24J40_LONG_ACCESS 0x80 | |
249 | #define MRF24J40_LONG_NUMREGS 0x38F | |
250 | ||
3731a334 AO |
251 | /* Read/Write SPI Commands for Short and Long Address registers. */ |
252 | #define MRF24J40_READSHORT(reg) ((reg) << 1) | |
253 | #define MRF24J40_WRITESHORT(reg) ((reg) << 1 | 1) | |
254 | #define MRF24J40_READLONG(reg) (1 << 15 | (reg) << 5) | |
255 | #define MRF24J40_WRITELONG(reg) (1 << 15 | (reg) << 5 | 1 << 4) | |
256 | ||
cf82dabd AO |
257 | /* The datasheet indicates the theoretical maximum for SCK to be 10MHz */ |
258 | #define MAX_SPI_SPEED_HZ 10000000 | |
3731a334 AO |
259 | |
260 | #define printdev(X) (&X->spi->dev) | |
261 | ||
b0156792 AA |
262 | static bool |
263 | mrf24j40_short_reg_writeable(struct device *dev, unsigned int reg) | |
264 | { | |
265 | switch (reg) { | |
266 | case REG_RXMCR: | |
267 | case REG_PANIDL: | |
268 | case REG_PANIDH: | |
269 | case REG_SADRL: | |
270 | case REG_SADRH: | |
271 | case REG_EADR0: | |
272 | case REG_EADR1: | |
273 | case REG_EADR2: | |
274 | case REG_EADR3: | |
275 | case REG_EADR4: | |
276 | case REG_EADR5: | |
277 | case REG_EADR6: | |
278 | case REG_EADR7: | |
279 | case REG_RXFLUSH: | |
280 | case REG_ORDER: | |
281 | case REG_TXMCR: | |
282 | case REG_ACKTMOUT: | |
283 | case REG_ESLOTG1: | |
284 | case REG_SYMTICKL: | |
285 | case REG_SYMTICKH: | |
286 | case REG_PACON0: | |
287 | case REG_PACON1: | |
288 | case REG_PACON2: | |
289 | case REG_TXBCON0: | |
290 | case REG_TXNCON: | |
291 | case REG_TXG1CON: | |
292 | case REG_TXG2CON: | |
293 | case REG_ESLOTG23: | |
294 | case REG_ESLOTG45: | |
295 | case REG_ESLOTG67: | |
296 | case REG_TXPEND: | |
297 | case REG_WAKECON: | |
298 | case REG_FROMOFFSET: | |
299 | case REG_TXBCON1: | |
300 | case REG_GATECLK: | |
301 | case REG_TXTIME: | |
302 | case REG_HSYMTMRL: | |
303 | case REG_HSYMTMRH: | |
304 | case REG_SOFTRST: | |
305 | case REG_SECCON0: | |
306 | case REG_SECCON1: | |
307 | case REG_TXSTBL: | |
308 | case REG_RXSR: | |
309 | case REG_INTCON: | |
310 | case REG_TRISGPIO: | |
311 | case REG_GPIO: | |
312 | case REG_RFCTL: | |
6367551f | 313 | case REG_SECCR2: |
b0156792 AA |
314 | case REG_SLPACK: |
315 | case REG_BBREG0: | |
316 | case REG_BBREG1: | |
317 | case REG_BBREG2: | |
318 | case REG_BBREG3: | |
319 | case REG_BBREG4: | |
320 | case REG_BBREG6: | |
321 | case REG_CCAEDTH: | |
322 | return true; | |
323 | default: | |
324 | return false; | |
325 | } | |
326 | } | |
327 | ||
328 | static bool | |
329 | mrf24j40_short_reg_readable(struct device *dev, unsigned int reg) | |
330 | { | |
331 | bool rc; | |
332 | ||
333 | /* all writeable are also readable */ | |
334 | rc = mrf24j40_short_reg_writeable(dev, reg); | |
335 | if (rc) | |
336 | return rc; | |
337 | ||
338 | /* readonly regs */ | |
339 | switch (reg) { | |
340 | case REG_TXSTAT: | |
341 | case REG_INTSTAT: | |
342 | return true; | |
343 | default: | |
344 | return false; | |
345 | } | |
346 | } | |
347 | ||
348 | static bool | |
349 | mrf24j40_short_reg_volatile(struct device *dev, unsigned int reg) | |
350 | { | |
351 | /* can be changed during runtime */ | |
352 | switch (reg) { | |
353 | case REG_TXSTAT: | |
354 | case REG_INTSTAT: | |
355 | case REG_RXFLUSH: | |
356 | case REG_TXNCON: | |
357 | case REG_SOFTRST: | |
358 | case REG_RFCTL: | |
359 | case REG_TXBCON0: | |
360 | case REG_TXG1CON: | |
361 | case REG_TXG2CON: | |
362 | case REG_TXBCON1: | |
363 | case REG_SECCON0: | |
364 | case REG_RXSR: | |
365 | case REG_SLPACK: | |
366 | case REG_SECCR2: | |
367 | case REG_BBREG6: | |
368 | /* use them in spi_async and regmap so it's volatile */ | |
369 | case REG_BBREG1: | |
370 | return true; | |
371 | default: | |
372 | return false; | |
373 | } | |
374 | } | |
375 | ||
376 | static bool | |
377 | mrf24j40_short_reg_precious(struct device *dev, unsigned int reg) | |
378 | { | |
379 | /* don't clear irq line on read */ | |
380 | switch (reg) { | |
381 | case REG_INTSTAT: | |
382 | return true; | |
383 | default: | |
384 | return false; | |
385 | } | |
386 | } | |
387 | ||
388 | static const struct regmap_config mrf24j40_short_regmap = { | |
389 | .name = "mrf24j40_short", | |
390 | .reg_bits = 7, | |
391 | .val_bits = 8, | |
392 | .pad_bits = 1, | |
393 | .write_flag_mask = MRF24J40_SHORT_WRITE, | |
394 | .read_flag_mask = MRF24J40_SHORT_READ, | |
395 | .cache_type = REGCACHE_RBTREE, | |
396 | .max_register = MRF24J40_SHORT_NUMREGS, | |
397 | .writeable_reg = mrf24j40_short_reg_writeable, | |
398 | .readable_reg = mrf24j40_short_reg_readable, | |
399 | .volatile_reg = mrf24j40_short_reg_volatile, | |
400 | .precious_reg = mrf24j40_short_reg_precious, | |
401 | }; | |
402 | ||
403 | static bool | |
404 | mrf24j40_long_reg_writeable(struct device *dev, unsigned int reg) | |
405 | { | |
406 | switch (reg) { | |
407 | case REG_RFCON0: | |
408 | case REG_RFCON1: | |
409 | case REG_RFCON2: | |
410 | case REG_RFCON3: | |
411 | case REG_RFCON5: | |
412 | case REG_RFCON6: | |
413 | case REG_RFCON7: | |
414 | case REG_RFCON8: | |
415 | case REG_SLPCAL2: | |
416 | case REG_SLPCON0: | |
417 | case REG_SLPCON1: | |
418 | case REG_WAKETIMEL: | |
419 | case REG_WAKETIMEH: | |
420 | case REG_REMCNTL: | |
421 | case REG_REMCNTH: | |
422 | case REG_MAINCNT0: | |
423 | case REG_MAINCNT1: | |
424 | case REG_MAINCNT2: | |
425 | case REG_MAINCNT3: | |
426 | case REG_TESTMODE: | |
427 | case REG_ASSOEAR0: | |
428 | case REG_ASSOEAR1: | |
429 | case REG_ASSOEAR2: | |
430 | case REG_ASSOEAR3: | |
431 | case REG_ASSOEAR4: | |
432 | case REG_ASSOEAR5: | |
433 | case REG_ASSOEAR6: | |
434 | case REG_ASSOEAR7: | |
435 | case REG_ASSOSAR0: | |
436 | case REG_ASSOSAR1: | |
437 | case REG_UNONCE0: | |
438 | case REG_UNONCE1: | |
439 | case REG_UNONCE2: | |
440 | case REG_UNONCE3: | |
441 | case REG_UNONCE4: | |
442 | case REG_UNONCE5: | |
443 | case REG_UNONCE6: | |
444 | case REG_UNONCE7: | |
445 | case REG_UNONCE8: | |
446 | case REG_UNONCE9: | |
447 | case REG_UNONCE10: | |
448 | case REG_UNONCE11: | |
449 | case REG_UNONCE12: | |
450 | return true; | |
451 | default: | |
452 | return false; | |
453 | } | |
454 | } | |
455 | ||
456 | static bool | |
457 | mrf24j40_long_reg_readable(struct device *dev, unsigned int reg) | |
458 | { | |
459 | bool rc; | |
460 | ||
461 | /* all writeable are also readable */ | |
462 | rc = mrf24j40_long_reg_writeable(dev, reg); | |
463 | if (rc) | |
464 | return rc; | |
465 | ||
466 | /* readonly regs */ | |
467 | switch (reg) { | |
468 | case REG_SLPCAL0: | |
469 | case REG_SLPCAL1: | |
470 | case REG_RFSTATE: | |
471 | case REG_RSSI: | |
472 | return true; | |
473 | default: | |
474 | return false; | |
475 | } | |
476 | } | |
477 | ||
478 | static bool | |
479 | mrf24j40_long_reg_volatile(struct device *dev, unsigned int reg) | |
480 | { | |
481 | /* can be changed during runtime */ | |
482 | switch (reg) { | |
483 | case REG_SLPCAL0: | |
484 | case REG_SLPCAL1: | |
485 | case REG_SLPCAL2: | |
486 | case REG_RFSTATE: | |
487 | case REG_RSSI: | |
488 | case REG_MAINCNT3: | |
489 | return true; | |
490 | default: | |
491 | return false; | |
492 | } | |
493 | } | |
494 | ||
495 | static const struct regmap_config mrf24j40_long_regmap = { | |
496 | .name = "mrf24j40_long", | |
497 | .reg_bits = 11, | |
498 | .val_bits = 8, | |
499 | .pad_bits = 5, | |
500 | .write_flag_mask = MRF24J40_LONG_ACCESS, | |
501 | .read_flag_mask = MRF24J40_LONG_ACCESS, | |
502 | .cache_type = REGCACHE_RBTREE, | |
503 | .max_register = MRF24J40_LONG_NUMREGS, | |
504 | .writeable_reg = mrf24j40_long_reg_writeable, | |
505 | .readable_reg = mrf24j40_long_reg_readable, | |
506 | .volatile_reg = mrf24j40_long_reg_volatile, | |
507 | }; | |
508 | ||
509 | static int mrf24j40_long_regmap_write(void *context, const void *data, | |
510 | size_t count) | |
511 | { | |
512 | struct spi_device *spi = context; | |
513 | u8 buf[3]; | |
514 | ||
515 | if (count > 3) | |
516 | return -EINVAL; | |
517 | ||
518 | /* regmap supports read/write mask only in frist byte | |
519 | * long write access need to set the 12th bit, so we | |
520 | * make special handling for write. | |
521 | */ | |
522 | memcpy(buf, data, count); | |
523 | buf[1] |= (1 << 4); | |
524 | ||
525 | return spi_write(spi, buf, count); | |
526 | } | |
527 | ||
528 | static int | |
529 | mrf24j40_long_regmap_read(void *context, const void *reg, size_t reg_size, | |
530 | void *val, size_t val_size) | |
531 | { | |
532 | struct spi_device *spi = context; | |
533 | ||
534 | return spi_write_then_read(spi, reg, reg_size, val, val_size); | |
535 | } | |
536 | ||
537 | static const struct regmap_bus mrf24j40_long_regmap_bus = { | |
538 | .write = mrf24j40_long_regmap_write, | |
539 | .read = mrf24j40_long_regmap_read, | |
540 | .reg_format_endian_default = REGMAP_ENDIAN_BIG, | |
541 | .val_format_endian_default = REGMAP_ENDIAN_BIG, | |
542 | }; | |
543 | ||
6844a0e4 AA |
544 | static void write_tx_buf_complete(void *context) |
545 | { | |
546 | struct mrf24j40 *devrec = context; | |
547 | __le16 fc = ieee802154_get_fc_from_skb(devrec->tx_skb); | |
7d840545 | 548 | u8 val = BIT_TXNTRIG; |
6844a0e4 AA |
549 | int ret; |
550 | ||
551 | if (ieee802154_is_ackreq(fc)) | |
7d840545 | 552 | val |= BIT_TXNACKREQ; |
6844a0e4 AA |
553 | |
554 | devrec->tx_post_msg.complete = NULL; | |
555 | devrec->tx_post_buf[0] = MRF24J40_WRITESHORT(REG_TXNCON); | |
556 | devrec->tx_post_buf[1] = val; | |
557 | ||
558 | ret = spi_async(devrec->spi, &devrec->tx_post_msg); | |
559 | if (ret) | |
560 | dev_err(printdev(devrec), "SPI write Failed for transmit buf\n"); | |
561 | } | |
562 | ||
3731a334 AO |
563 | /* This function relies on an undocumented write method. Once a write command |
564 | and address is set, as many bytes of data as desired can be clocked into | |
565 | the device. The datasheet only shows setting one byte at a time. */ | |
566 | static int write_tx_buf(struct mrf24j40 *devrec, u16 reg, | |
567 | const u8 *data, size_t length) | |
568 | { | |
3731a334 | 569 | u16 cmd; |
6844a0e4 | 570 | int ret; |
3731a334 AO |
571 | |
572 | /* Range check the length. 2 bytes are used for the length fields.*/ | |
573 | if (length > TX_FIFO_SIZE-2) { | |
574 | dev_err(printdev(devrec), "write_tx_buf() was passed too large a buffer. Performing short write.\n"); | |
575 | length = TX_FIFO_SIZE-2; | |
576 | } | |
577 | ||
3731a334 | 578 | cmd = MRF24J40_WRITELONG(reg); |
6844a0e4 AA |
579 | devrec->tx_hdr_buf[0] = cmd >> 8 & 0xff; |
580 | devrec->tx_hdr_buf[1] = cmd & 0xff; | |
581 | devrec->tx_len_buf[0] = 0x0; /* Header Length. Set to 0 for now. TODO */ | |
582 | devrec->tx_len_buf[1] = length; /* Total length */ | |
583 | devrec->tx_buf_trx.tx_buf = data; | |
584 | devrec->tx_buf_trx.len = length; | |
585 | ||
586 | ret = spi_async(devrec->spi, &devrec->tx_msg); | |
3731a334 AO |
587 | if (ret) |
588 | dev_err(printdev(devrec), "SPI write Failed for TX buf\n"); | |
589 | ||
3731a334 AO |
590 | return ret; |
591 | } | |
592 | ||
6844a0e4 AA |
593 | static int mrf24j40_tx(struct ieee802154_hw *hw, struct sk_buff *skb) |
594 | { | |
595 | struct mrf24j40 *devrec = hw->priv; | |
596 | ||
597 | dev_dbg(printdev(devrec), "tx packet of %d bytes\n", skb->len); | |
598 | devrec->tx_skb = skb; | |
599 | ||
600 | return write_tx_buf(devrec, 0x000, skb->data, skb->len); | |
601 | } | |
602 | ||
5a504397 | 603 | static int mrf24j40_ed(struct ieee802154_hw *hw, u8 *level) |
3731a334 AO |
604 | { |
605 | /* TODO: */ | |
ca079ad6 | 606 | pr_warn("mrf24j40: ed not implemented\n"); |
3731a334 AO |
607 | *level = 0; |
608 | return 0; | |
609 | } | |
610 | ||
5a504397 | 611 | static int mrf24j40_start(struct ieee802154_hw *hw) |
3731a334 | 612 | { |
5a504397 | 613 | struct mrf24j40 *devrec = hw->priv; |
3731a334 AO |
614 | |
615 | dev_dbg(printdev(devrec), "start\n"); | |
616 | ||
42c7148e AA |
617 | /* Clear TXNIE and RXIE. Enable interrupts */ |
618 | return regmap_update_bits(devrec->regmap_short, REG_INTCON, | |
7d840545 | 619 | BIT_TXNIE | BIT_RXIE, 0); |
3731a334 AO |
620 | } |
621 | ||
5a504397 | 622 | static void mrf24j40_stop(struct ieee802154_hw *hw) |
3731a334 | 623 | { |
5a504397 | 624 | struct mrf24j40 *devrec = hw->priv; |
529160dc | 625 | |
3731a334 AO |
626 | dev_dbg(printdev(devrec), "stop\n"); |
627 | ||
42c7148e | 628 | /* Set TXNIE and RXIE. Disable Interrupts */ |
7d840545 AA |
629 | regmap_update_bits(devrec->regmap_short, REG_INTCON, |
630 | BIT_TXNIE | BIT_TXNIE, BIT_TXNIE | BIT_TXNIE); | |
3731a334 AO |
631 | } |
632 | ||
e37d2ec8 | 633 | static int mrf24j40_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel) |
3731a334 | 634 | { |
5a504397 | 635 | struct mrf24j40 *devrec = hw->priv; |
3731a334 AO |
636 | u8 val; |
637 | int ret; | |
638 | ||
639 | dev_dbg(printdev(devrec), "Set Channel %d\n", channel); | |
640 | ||
641 | WARN_ON(page != 0); | |
642 | WARN_ON(channel < MRF24J40_CHAN_MIN); | |
643 | WARN_ON(channel > MRF24J40_CHAN_MAX); | |
644 | ||
645 | /* Set Channel TODO */ | |
7d840545 AA |
646 | val = (channel - 11) << RFCON0_CH_SHIFT | RFOPT_RECOMMEND; |
647 | ret = regmap_update_bits(devrec->regmap_long, REG_RFCON0, | |
648 | RFCON0_CH_MASK, val); | |
42c7148e AA |
649 | if (ret) |
650 | return ret; | |
3731a334 AO |
651 | |
652 | /* RF Reset */ | |
7d840545 AA |
653 | ret = regmap_update_bits(devrec->regmap_short, REG_RFCTL, BIT_RFRST, |
654 | BIT_RFRST); | |
3731a334 AO |
655 | if (ret) |
656 | return ret; | |
3731a334 | 657 | |
7d840545 | 658 | ret = regmap_update_bits(devrec->regmap_short, REG_RFCTL, BIT_RFRST, 0); |
42c7148e AA |
659 | if (!ret) |
660 | udelay(SET_CHANNEL_DELAY_US); /* per datasheet */ | |
3731a334 | 661 | |
42c7148e | 662 | return ret; |
3731a334 AO |
663 | } |
664 | ||
5a504397 | 665 | static int mrf24j40_filter(struct ieee802154_hw *hw, |
3731a334 AO |
666 | struct ieee802154_hw_addr_filt *filt, |
667 | unsigned long changed) | |
668 | { | |
5a504397 | 669 | struct mrf24j40 *devrec = hw->priv; |
3731a334 AO |
670 | |
671 | dev_dbg(printdev(devrec), "filter\n"); | |
672 | ||
57205c14 | 673 | if (changed & IEEE802154_AFILT_SADDR_CHANGED) { |
3731a334 AO |
674 | /* Short Addr */ |
675 | u8 addrh, addrl; | |
529160dc | 676 | |
b70ab2e8 PB |
677 | addrh = le16_to_cpu(filt->short_addr) >> 8 & 0xff; |
678 | addrl = le16_to_cpu(filt->short_addr) & 0xff; | |
3731a334 | 679 | |
42c7148e AA |
680 | regmap_write(devrec->regmap_short, REG_SADRH, addrh); |
681 | regmap_write(devrec->regmap_short, REG_SADRL, addrl); | |
3731a334 AO |
682 | dev_dbg(printdev(devrec), |
683 | "Set short addr to %04hx\n", filt->short_addr); | |
684 | } | |
685 | ||
57205c14 | 686 | if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) { |
3731a334 | 687 | /* Device Address */ |
b70ab2e8 PB |
688 | u8 i, addr[8]; |
689 | ||
690 | memcpy(addr, &filt->ieee_addr, 8); | |
3731a334 | 691 | for (i = 0; i < 8; i++) |
42c7148e AA |
692 | regmap_write(devrec->regmap_short, REG_EADR0 + i, |
693 | addr[i]); | |
3731a334 AO |
694 | |
695 | #ifdef DEBUG | |
ca079ad6 | 696 | pr_debug("Set long addr to: "); |
3731a334 | 697 | for (i = 0; i < 8; i++) |
ca079ad6 VB |
698 | pr_debug("%02hhx ", addr[7 - i]); |
699 | pr_debug("\n"); | |
3731a334 AO |
700 | #endif |
701 | } | |
702 | ||
57205c14 | 703 | if (changed & IEEE802154_AFILT_PANID_CHANGED) { |
3731a334 AO |
704 | /* PAN ID */ |
705 | u8 panidl, panidh; | |
529160dc | 706 | |
b70ab2e8 PB |
707 | panidh = le16_to_cpu(filt->pan_id) >> 8 & 0xff; |
708 | panidl = le16_to_cpu(filt->pan_id) & 0xff; | |
42c7148e AA |
709 | regmap_write(devrec->regmap_short, REG_PANIDH, panidh); |
710 | regmap_write(devrec->regmap_short, REG_PANIDL, panidl); | |
3731a334 AO |
711 | |
712 | dev_dbg(printdev(devrec), "Set PANID to %04hx\n", filt->pan_id); | |
713 | } | |
714 | ||
57205c14 | 715 | if (changed & IEEE802154_AFILT_PANC_CHANGED) { |
3731a334 AO |
716 | /* Pan Coordinator */ |
717 | u8 val; | |
718 | int ret; | |
719 | ||
3731a334 | 720 | if (filt->pan_coord) |
7d840545 | 721 | val = BIT_PANCOORD; |
3731a334 | 722 | else |
7d840545 AA |
723 | val = 0; |
724 | ret = regmap_update_bits(devrec->regmap_short, REG_RXMCR, | |
725 | BIT_PANCOORD, val); | |
42c7148e AA |
726 | if (ret) |
727 | return ret; | |
3731a334 AO |
728 | |
729 | /* REG_SLOTTED is maintained as default (unslotted/CSMA-CA). | |
730 | * REG_ORDER is maintained as default (no beacon/superframe). | |
731 | */ | |
732 | ||
733 | dev_dbg(printdev(devrec), "Set Pan Coord to %s\n", | |
ce261bc3 | 734 | filt->pan_coord ? "on" : "off"); |
3731a334 AO |
735 | } |
736 | ||
737 | return 0; | |
738 | } | |
739 | ||
c91a3011 | 740 | static void mrf24j40_handle_rx_read_buf_unlock(struct mrf24j40 *devrec) |
3731a334 | 741 | { |
c91a3011 | 742 | int ret; |
3731a334 | 743 | |
c91a3011 AA |
744 | /* Turn back on reception of packets off the air. */ |
745 | devrec->rx_msg.complete = NULL; | |
746 | devrec->rx_buf[0] = MRF24J40_WRITESHORT(REG_BBREG1); | |
747 | devrec->rx_buf[1] = 0x00; /* CLR RXDECINV */ | |
748 | ret = spi_async(devrec->spi, &devrec->rx_msg); | |
3731a334 | 749 | if (ret) |
c91a3011 AA |
750 | dev_err(printdev(devrec), "failed to unlock rx buffer\n"); |
751 | } | |
3731a334 | 752 | |
c91a3011 AA |
753 | static void mrf24j40_handle_rx_read_buf_complete(void *context) |
754 | { | |
755 | struct mrf24j40 *devrec = context; | |
756 | u8 len = devrec->rx_buf[2]; | |
757 | u8 rx_local_buf[RX_FIFO_SIZE]; | |
758 | struct sk_buff *skb; | |
759 | ||
760 | memcpy(rx_local_buf, devrec->rx_fifo_buf, len); | |
761 | mrf24j40_handle_rx_read_buf_unlock(devrec); | |
762 | ||
763 | skb = dev_alloc_skb(IEEE802154_MTU); | |
3731a334 | 764 | if (!skb) { |
c91a3011 AA |
765 | dev_err(printdev(devrec), "failed to allocate skb\n"); |
766 | return; | |
3731a334 AO |
767 | } |
768 | ||
c91a3011 AA |
769 | memcpy(skb_put(skb, len), rx_local_buf, len); |
770 | ieee802154_rx_irqsafe(devrec->hw, skb, 0); | |
771 | ||
772 | #ifdef DEBUG | |
773 | print_hex_dump(KERN_DEBUG, "mrf24j40 rx: ", DUMP_PREFIX_OFFSET, 16, 1, | |
774 | rx_local_buf, len, 0); | |
775 | pr_debug("mrf24j40 rx: lqi: %02hhx rssi: %02hhx\n", | |
776 | devrec->rx_lqi_buf[0], devrec->rx_lqi_buf[1]); | |
777 | #endif | |
778 | } | |
779 | ||
780 | static void mrf24j40_handle_rx_read_buf(void *context) | |
781 | { | |
782 | struct mrf24j40 *devrec = context; | |
783 | u16 cmd; | |
784 | int ret; | |
785 | ||
786 | /* if length is invalid read the full MTU */ | |
787 | if (!ieee802154_is_valid_psdu_len(devrec->rx_buf[2])) | |
788 | devrec->rx_buf[2] = IEEE802154_MTU; | |
789 | ||
790 | cmd = MRF24J40_READLONG(REG_RX_FIFO + 1); | |
791 | devrec->rx_addr_buf[0] = cmd >> 8 & 0xff; | |
792 | devrec->rx_addr_buf[1] = cmd & 0xff; | |
793 | devrec->rx_fifo_buf_trx.len = devrec->rx_buf[2]; | |
794 | ret = spi_async(devrec->spi, &devrec->rx_buf_msg); | |
795 | if (ret) { | |
796 | dev_err(printdev(devrec), "failed to read rx buffer\n"); | |
797 | mrf24j40_handle_rx_read_buf_unlock(devrec); | |
3731a334 | 798 | } |
c91a3011 | 799 | } |
3731a334 | 800 | |
c91a3011 AA |
801 | static void mrf24j40_handle_rx_read_len(void *context) |
802 | { | |
803 | struct mrf24j40 *devrec = context; | |
804 | u16 cmd; | |
805 | int ret; | |
3731a334 | 806 | |
c91a3011 AA |
807 | /* read the length of received frame */ |
808 | devrec->rx_msg.complete = mrf24j40_handle_rx_read_buf; | |
809 | devrec->rx_trx.len = 3; | |
810 | cmd = MRF24J40_READLONG(REG_RX_FIFO); | |
811 | devrec->rx_buf[0] = cmd >> 8 & 0xff; | |
812 | devrec->rx_buf[1] = cmd & 0xff; | |
3731a334 | 813 | |
c91a3011 AA |
814 | ret = spi_async(devrec->spi, &devrec->rx_msg); |
815 | if (ret) { | |
816 | dev_err(printdev(devrec), "failed to read rx buffer length\n"); | |
817 | mrf24j40_handle_rx_read_buf_unlock(devrec); | |
818 | } | |
819 | } | |
3731a334 | 820 | |
c91a3011 AA |
821 | static int mrf24j40_handle_rx(struct mrf24j40 *devrec) |
822 | { | |
823 | /* Turn off reception of packets off the air. This prevents the | |
824 | * device from overwriting the buffer while we're reading it. | |
825 | */ | |
826 | devrec->rx_msg.complete = mrf24j40_handle_rx_read_len; | |
827 | devrec->rx_trx.len = 2; | |
828 | devrec->rx_buf[0] = MRF24J40_WRITESHORT(REG_BBREG1); | |
7d840545 | 829 | devrec->rx_buf[1] = BIT_RXDECINV; /* SET RXDECINV */ |
c91a3011 AA |
830 | |
831 | return spi_async(devrec->spi, &devrec->rx_msg); | |
3731a334 AO |
832 | } |
833 | ||
2323cf38 AA |
834 | static int |
835 | mrf24j40_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be, | |
836 | u8 retries) | |
837 | { | |
838 | struct mrf24j40 *devrec = hw->priv; | |
839 | u8 val; | |
840 | ||
841 | /* min_be */ | |
7d840545 | 842 | val = min_be << TXMCR_MIN_BE_SHIFT; |
2323cf38 | 843 | /* csma backoffs */ |
7d840545 | 844 | val |= retries << TXMCR_CSMA_RETRIES_SHIFT; |
2323cf38 | 845 | |
7d840545 AA |
846 | return regmap_update_bits(devrec->regmap_short, REG_TXMCR, |
847 | TXMCR_MIN_BE_MASK | TXMCR_CSMA_RETRIES_MASK, | |
848 | val); | |
2323cf38 AA |
849 | } |
850 | ||
f1d78127 AA |
851 | static int mrf24j40_set_cca_mode(struct ieee802154_hw *hw, |
852 | const struct wpan_phy_cca *cca) | |
853 | { | |
854 | struct mrf24j40 *devrec = hw->priv; | |
855 | u8 val; | |
856 | ||
857 | /* mapping 802.15.4 to driver spec */ | |
858 | switch (cca->mode) { | |
859 | case NL802154_CCA_ENERGY: | |
860 | val = 2; | |
861 | break; | |
862 | case NL802154_CCA_CARRIER: | |
863 | val = 1; | |
864 | break; | |
865 | case NL802154_CCA_ENERGY_CARRIER: | |
866 | switch (cca->opt) { | |
867 | case NL802154_CCA_OPT_ENERGY_CARRIER_AND: | |
868 | val = 3; | |
869 | break; | |
870 | default: | |
871 | return -EINVAL; | |
872 | } | |
873 | break; | |
874 | default: | |
875 | return -EINVAL; | |
876 | } | |
877 | ||
7d840545 AA |
878 | return regmap_update_bits(devrec->regmap_short, REG_BBREG2, |
879 | BBREG2_CCA_MODE_MASK, | |
880 | val << BBREG2_CCA_MODE_SHIFT); | |
f1d78127 AA |
881 | } |
882 | ||
e33a0f96 AA |
883 | /* array for representing ed levels */ |
884 | static const s32 mrf24j40_ed_levels[] = { | |
885 | -9000, -8900, -8800, -8700, -8600, -8500, -8400, -8300, -8200, -8100, | |
886 | -8000, -7900, -7800, -7700, -7600, -7500, -7400, -7300, -7200, -7100, | |
887 | -7000, -6900, -6800, -6700, -6600, -6500, -6400, -6300, -6200, -6100, | |
888 | -6000, -5900, -5800, -5700, -5600, -5500, -5400, -5300, -5200, -5100, | |
889 | -5000, -4900, -4800, -4700, -4600, -4500, -4400, -4300, -4200, -4100, | |
890 | -4000, -3900, -3800, -3700, -3600, -3500 | |
891 | }; | |
892 | ||
893 | /* map ed levels to register value */ | |
894 | static const s32 mrf24j40_ed_levels_map[][2] = { | |
895 | { -9000, 0 }, { -8900, 1 }, { -8800, 2 }, { -8700, 5 }, { -8600, 9 }, | |
896 | { -8500, 13 }, { -8400, 18 }, { -8300, 23 }, { -8200, 27 }, | |
897 | { -8100, 32 }, { -8000, 37 }, { -7900, 43 }, { -7800, 48 }, | |
898 | { -7700, 53 }, { -7600, 58 }, { -7500, 63 }, { -7400, 68 }, | |
899 | { -7300, 73 }, { -7200, 78 }, { -7100, 83 }, { -7000, 89 }, | |
900 | { -6900, 95 }, { -6800, 100 }, { -6700, 107 }, { -6600, 111 }, | |
901 | { -6500, 117 }, { -6400, 121 }, { -6300, 125 }, { -6200, 129 }, | |
902 | { -6100, 133 }, { -6000, 138 }, { -5900, 143 }, { -5800, 148 }, | |
903 | { -5700, 153 }, { -5600, 159 }, { -5500, 165 }, { -5400, 170 }, | |
904 | { -5300, 176 }, { -5200, 183 }, { -5100, 188 }, { -5000, 193 }, | |
905 | { -4900, 198 }, { -4800, 203 }, { -4700, 207 }, { -4600, 212 }, | |
906 | { -4500, 216 }, { -4400, 221 }, { -4300, 225 }, { -4200, 228 }, | |
907 | { -4100, 233 }, { -4000, 239 }, { -3900, 245 }, { -3800, 250 }, | |
908 | { -3700, 253 }, { -3600, 254 }, { -3500, 255 }, | |
909 | }; | |
910 | ||
911 | static int mrf24j40_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm) | |
912 | { | |
913 | struct mrf24j40 *devrec = hw->priv; | |
914 | int i; | |
915 | ||
916 | for (i = 0; i < ARRAY_SIZE(mrf24j40_ed_levels_map); i++) { | |
917 | if (mrf24j40_ed_levels_map[i][0] == mbm) | |
918 | return regmap_write(devrec->regmap_short, REG_CCAEDTH, | |
919 | mrf24j40_ed_levels_map[i][1]); | |
920 | } | |
921 | ||
922 | return -EINVAL; | |
923 | } | |
924 | ||
00250f78 AA |
925 | static const s32 mrf24j40ma_powers[] = { |
926 | 0, -50, -120, -190, -280, -370, -490, -630, -1000, -1050, -1120, -1190, | |
927 | -1280, -1370, -1490, -1630, -2000, -2050, -2120, -2190, -2280, -2370, | |
928 | -2490, -2630, -3000, -3050, -3120, -3190, -3280, -3370, -3490, -3630, | |
929 | }; | |
930 | ||
931 | static int mrf24j40_set_txpower(struct ieee802154_hw *hw, s32 mbm) | |
932 | { | |
933 | struct mrf24j40 *devrec = hw->priv; | |
934 | s32 small_scale; | |
935 | u8 val; | |
936 | ||
937 | if (0 >= mbm && mbm > -1000) { | |
7d840545 | 938 | val = TXPWRL_0 << TXPWRL_SHIFT; |
00250f78 AA |
939 | small_scale = mbm; |
940 | } else if (-1000 >= mbm && mbm > -2000) { | |
7d840545 | 941 | val = TXPWRL_10 << TXPWRL_SHIFT; |
00250f78 AA |
942 | small_scale = mbm + 1000; |
943 | } else if (-2000 >= mbm && mbm > -3000) { | |
7d840545 | 944 | val = TXPWRL_20 << TXPWRL_SHIFT; |
00250f78 AA |
945 | small_scale = mbm + 2000; |
946 | } else if (-3000 >= mbm && mbm > -4000) { | |
7d840545 | 947 | val = TXPWRL_30 << TXPWRL_SHIFT; |
00250f78 AA |
948 | small_scale = mbm + 3000; |
949 | } else { | |
950 | return -EINVAL; | |
951 | } | |
952 | ||
953 | switch (small_scale) { | |
954 | case 0: | |
7d840545 | 955 | val |= (TXPWRS_0 << TXPWRS_SHIFT); |
00250f78 AA |
956 | break; |
957 | case -50: | |
7d840545 | 958 | val |= (TXPWRS_0_5 << TXPWRS_SHIFT); |
00250f78 AA |
959 | break; |
960 | case -120: | |
7d840545 | 961 | val |= (TXPWRS_1_2 << TXPWRS_SHIFT); |
00250f78 AA |
962 | break; |
963 | case -190: | |
7d840545 | 964 | val |= (TXPWRS_1_9 << TXPWRS_SHIFT); |
00250f78 AA |
965 | break; |
966 | case -280: | |
7d840545 | 967 | val |= (TXPWRS_2_8 << TXPWRS_SHIFT); |
00250f78 AA |
968 | break; |
969 | case -370: | |
7d840545 | 970 | val |= (TXPWRS_3_7 << TXPWRS_SHIFT); |
00250f78 AA |
971 | break; |
972 | case -490: | |
7d840545 | 973 | val |= (TXPWRS_4_9 << TXPWRS_SHIFT); |
00250f78 AA |
974 | break; |
975 | case -630: | |
7d840545 | 976 | val |= (TXPWRS_6_3 << TXPWRS_SHIFT); |
00250f78 AA |
977 | break; |
978 | default: | |
979 | return -EINVAL; | |
980 | } | |
981 | ||
7d840545 AA |
982 | return regmap_update_bits(devrec->regmap_long, REG_RFCON3, |
983 | TXPWRL_MASK | TXPWRS_MASK, val); | |
00250f78 AA |
984 | } |
985 | ||
8ba40417 AA |
986 | static int mrf24j40_set_promiscuous_mode(struct ieee802154_hw *hw, bool on) |
987 | { | |
988 | struct mrf24j40 *devrec = hw->priv; | |
989 | int ret; | |
990 | ||
991 | if (on) { | |
992 | /* set PROMI, ERRPKT and NOACKRSP */ | |
7d840545 AA |
993 | ret = regmap_update_bits(devrec->regmap_short, REG_RXMCR, |
994 | BIT_PROMI | BIT_ERRPKT | BIT_NOACKRSP, | |
995 | BIT_PROMI | BIT_ERRPKT | BIT_NOACKRSP); | |
8ba40417 AA |
996 | } else { |
997 | /* clear PROMI, ERRPKT and NOACKRSP */ | |
7d840545 AA |
998 | ret = regmap_update_bits(devrec->regmap_short, REG_RXMCR, |
999 | BIT_PROMI | BIT_ERRPKT | BIT_NOACKRSP, | |
1000 | 0); | |
8ba40417 AA |
1001 | } |
1002 | ||
1003 | return ret; | |
1004 | } | |
1005 | ||
16301861 | 1006 | static const struct ieee802154_ops mrf24j40_ops = { |
3731a334 | 1007 | .owner = THIS_MODULE, |
6844a0e4 | 1008 | .xmit_async = mrf24j40_tx, |
3731a334 AO |
1009 | .ed = mrf24j40_ed, |
1010 | .start = mrf24j40_start, | |
1011 | .stop = mrf24j40_stop, | |
1012 | .set_channel = mrf24j40_set_channel, | |
1013 | .set_hw_addr_filt = mrf24j40_filter, | |
2323cf38 | 1014 | .set_csma_params = mrf24j40_csma_params, |
f1d78127 | 1015 | .set_cca_mode = mrf24j40_set_cca_mode, |
e33a0f96 | 1016 | .set_cca_ed_level = mrf24j40_set_cca_ed_level, |
00250f78 | 1017 | .set_txpower = mrf24j40_set_txpower, |
8ba40417 | 1018 | .set_promiscuous_mode = mrf24j40_set_promiscuous_mode, |
3731a334 AO |
1019 | }; |
1020 | ||
37441611 | 1021 | static void mrf24j40_intstat_complete(void *context) |
3731a334 | 1022 | { |
37441611 AA |
1023 | struct mrf24j40 *devrec = context; |
1024 | u8 intstat = devrec->irq_buf[1]; | |
3731a334 | 1025 | |
37441611 | 1026 | enable_irq(devrec->spi->irq); |
3731a334 AO |
1027 | |
1028 | /* Check for TX complete */ | |
7d840545 | 1029 | if (intstat & BIT_TXNIF) |
6844a0e4 | 1030 | ieee802154_xmit_complete(devrec->hw, devrec->tx_skb, false); |
3731a334 AO |
1031 | |
1032 | /* Check for Rx */ | |
7d840545 | 1033 | if (intstat & BIT_RXIF) |
3731a334 | 1034 | mrf24j40_handle_rx(devrec); |
37441611 AA |
1035 | } |
1036 | ||
1037 | static irqreturn_t mrf24j40_isr(int irq, void *data) | |
1038 | { | |
1039 | struct mrf24j40 *devrec = data; | |
1040 | int ret; | |
1041 | ||
1042 | disable_irq_nosync(irq); | |
1043 | ||
1044 | devrec->irq_buf[0] = MRF24J40_READSHORT(REG_INTSTAT); | |
1045 | /* Read the interrupt status */ | |
1046 | ret = spi_async(devrec->spi, &devrec->irq_msg); | |
1047 | if (ret) { | |
1048 | enable_irq(irq); | |
1049 | return IRQ_NONE; | |
1050 | } | |
3731a334 | 1051 | |
4a4e1da8 | 1052 | return IRQ_HANDLED; |
3731a334 AO |
1053 | } |
1054 | ||
3dac9a79 VB |
1055 | static int mrf24j40_hw_init(struct mrf24j40 *devrec) |
1056 | { | |
afaf7fde | 1057 | u32 irq_type; |
3dac9a79 | 1058 | int ret; |
3dac9a79 VB |
1059 | |
1060 | /* Initialize the device. | |
1061 | From datasheet section 3.2: Initialization. */ | |
42c7148e | 1062 | ret = regmap_write(devrec->regmap_short, REG_SOFTRST, 0x07); |
3dac9a79 VB |
1063 | if (ret) |
1064 | goto err_ret; | |
1065 | ||
42c7148e | 1066 | ret = regmap_write(devrec->regmap_short, REG_PACON2, 0x98); |
3dac9a79 VB |
1067 | if (ret) |
1068 | goto err_ret; | |
1069 | ||
42c7148e | 1070 | ret = regmap_write(devrec->regmap_short, REG_TXSTBL, 0x95); |
3dac9a79 VB |
1071 | if (ret) |
1072 | goto err_ret; | |
1073 | ||
42c7148e | 1074 | ret = regmap_write(devrec->regmap_long, REG_RFCON0, 0x03); |
3dac9a79 VB |
1075 | if (ret) |
1076 | goto err_ret; | |
1077 | ||
42c7148e | 1078 | ret = regmap_write(devrec->regmap_long, REG_RFCON1, 0x01); |
3dac9a79 VB |
1079 | if (ret) |
1080 | goto err_ret; | |
1081 | ||
42c7148e | 1082 | ret = regmap_write(devrec->regmap_long, REG_RFCON2, 0x80); |
3dac9a79 VB |
1083 | if (ret) |
1084 | goto err_ret; | |
1085 | ||
42c7148e | 1086 | ret = regmap_write(devrec->regmap_long, REG_RFCON6, 0x90); |
3dac9a79 VB |
1087 | if (ret) |
1088 | goto err_ret; | |
1089 | ||
42c7148e | 1090 | ret = regmap_write(devrec->regmap_long, REG_RFCON7, 0x80); |
3dac9a79 VB |
1091 | if (ret) |
1092 | goto err_ret; | |
1093 | ||
42c7148e | 1094 | ret = regmap_write(devrec->regmap_long, REG_RFCON8, 0x10); |
3dac9a79 VB |
1095 | if (ret) |
1096 | goto err_ret; | |
1097 | ||
42c7148e | 1098 | ret = regmap_write(devrec->regmap_long, REG_SLPCON1, 0x21); |
3dac9a79 VB |
1099 | if (ret) |
1100 | goto err_ret; | |
1101 | ||
42c7148e | 1102 | ret = regmap_write(devrec->regmap_short, REG_BBREG2, 0x80); |
3dac9a79 VB |
1103 | if (ret) |
1104 | goto err_ret; | |
1105 | ||
42c7148e | 1106 | ret = regmap_write(devrec->regmap_short, REG_CCAEDTH, 0x60); |
3dac9a79 VB |
1107 | if (ret) |
1108 | goto err_ret; | |
1109 | ||
42c7148e | 1110 | ret = regmap_write(devrec->regmap_short, REG_BBREG6, 0x40); |
3dac9a79 VB |
1111 | if (ret) |
1112 | goto err_ret; | |
1113 | ||
42c7148e | 1114 | ret = regmap_write(devrec->regmap_short, REG_RFCTL, 0x04); |
3dac9a79 VB |
1115 | if (ret) |
1116 | goto err_ret; | |
1117 | ||
42c7148e | 1118 | ret = regmap_write(devrec->regmap_short, REG_RFCTL, 0x0); |
3dac9a79 VB |
1119 | if (ret) |
1120 | goto err_ret; | |
1121 | ||
1122 | udelay(192); | |
1123 | ||
1124 | /* Set RX Mode. RXMCR<1:0>: 0x0 normal, 0x1 promisc, 0x2 error */ | |
42c7148e | 1125 | ret = regmap_update_bits(devrec->regmap_short, REG_RXMCR, 0x03, 0x00); |
3dac9a79 VB |
1126 | if (ret) |
1127 | goto err_ret; | |
1128 | ||
db9e0ee8 SV |
1129 | if (spi_get_device_id(devrec->spi)->driver_data == MRF24J40MC) { |
1130 | /* Enable external amplifier. | |
1131 | * From MRF24J40MC datasheet section 1.3: Operation. | |
1132 | */ | |
42c7148e AA |
1133 | regmap_update_bits(devrec->regmap_long, REG_TESTMODE, 0x07, |
1134 | 0x07); | |
db9e0ee8 | 1135 | |
42c7148e AA |
1136 | /* Set GPIO3 as output. */ |
1137 | regmap_update_bits(devrec->regmap_short, REG_TRISGPIO, 0x08, | |
1138 | 0x08); | |
db9e0ee8 | 1139 | |
42c7148e AA |
1140 | /* Set GPIO3 HIGH to enable U5 voltage regulator */ |
1141 | regmap_update_bits(devrec->regmap_short, REG_GPIO, 0x08, 0x08); | |
db9e0ee8 SV |
1142 | |
1143 | /* Reduce TX pwr to meet FCC requirements. | |
1144 | * From MRF24J40MC datasheet section 3.1.1 | |
1145 | */ | |
42c7148e | 1146 | regmap_write(devrec->regmap_long, REG_RFCON3, 0x28); |
db9e0ee8 SV |
1147 | } |
1148 | ||
afaf7fde AA |
1149 | irq_type = irq_get_trigger_type(devrec->spi->irq); |
1150 | if (irq_type == IRQ_TYPE_EDGE_RISING || | |
1151 | irq_type == IRQ_TYPE_EDGE_FALLING) | |
1152 | dev_warn(&devrec->spi->dev, | |
1153 | "Using edge triggered irq's are not recommended, because it can cause races and result in a non-functional driver!\n"); | |
1154 | switch (irq_type) { | |
1155 | case IRQ_TYPE_EDGE_RISING: | |
1156 | case IRQ_TYPE_LEVEL_HIGH: | |
1157 | /* set interrupt polarity to rising */ | |
1158 | ret = regmap_update_bits(devrec->regmap_long, REG_SLPCON0, | |
7d840545 | 1159 | BIT_INTEDGE, BIT_INTEDGE); |
afaf7fde AA |
1160 | if (ret) |
1161 | goto err_ret; | |
1162 | break; | |
1163 | default: | |
1164 | /* default is falling edge */ | |
1165 | break; | |
1166 | } | |
1167 | ||
3dac9a79 VB |
1168 | return 0; |
1169 | ||
1170 | err_ret: | |
1171 | return ret; | |
1172 | } | |
1173 | ||
6844a0e4 AA |
1174 | static void |
1175 | mrf24j40_setup_tx_spi_messages(struct mrf24j40 *devrec) | |
1176 | { | |
1177 | spi_message_init(&devrec->tx_msg); | |
1178 | devrec->tx_msg.context = devrec; | |
1179 | devrec->tx_msg.complete = write_tx_buf_complete; | |
1180 | devrec->tx_hdr_trx.len = 2; | |
1181 | devrec->tx_hdr_trx.tx_buf = devrec->tx_hdr_buf; | |
1182 | spi_message_add_tail(&devrec->tx_hdr_trx, &devrec->tx_msg); | |
1183 | devrec->tx_len_trx.len = 2; | |
1184 | devrec->tx_len_trx.tx_buf = devrec->tx_len_buf; | |
1185 | spi_message_add_tail(&devrec->tx_len_trx, &devrec->tx_msg); | |
1186 | spi_message_add_tail(&devrec->tx_buf_trx, &devrec->tx_msg); | |
1187 | ||
1188 | spi_message_init(&devrec->tx_post_msg); | |
1189 | devrec->tx_post_msg.context = devrec; | |
1190 | devrec->tx_post_trx.len = 2; | |
1191 | devrec->tx_post_trx.tx_buf = devrec->tx_post_buf; | |
1192 | spi_message_add_tail(&devrec->tx_post_trx, &devrec->tx_post_msg); | |
1193 | } | |
1194 | ||
c91a3011 AA |
1195 | static void |
1196 | mrf24j40_setup_rx_spi_messages(struct mrf24j40 *devrec) | |
1197 | { | |
1198 | spi_message_init(&devrec->rx_msg); | |
1199 | devrec->rx_msg.context = devrec; | |
1200 | devrec->rx_trx.len = 2; | |
1201 | devrec->rx_trx.tx_buf = devrec->rx_buf; | |
1202 | devrec->rx_trx.rx_buf = devrec->rx_buf; | |
1203 | spi_message_add_tail(&devrec->rx_trx, &devrec->rx_msg); | |
1204 | ||
1205 | spi_message_init(&devrec->rx_buf_msg); | |
1206 | devrec->rx_buf_msg.context = devrec; | |
1207 | devrec->rx_buf_msg.complete = mrf24j40_handle_rx_read_buf_complete; | |
1208 | devrec->rx_addr_trx.len = 2; | |
1209 | devrec->rx_addr_trx.tx_buf = devrec->rx_addr_buf; | |
1210 | spi_message_add_tail(&devrec->rx_addr_trx, &devrec->rx_buf_msg); | |
1211 | devrec->rx_fifo_buf_trx.rx_buf = devrec->rx_fifo_buf; | |
1212 | spi_message_add_tail(&devrec->rx_fifo_buf_trx, &devrec->rx_buf_msg); | |
1213 | devrec->rx_lqi_trx.len = 2; | |
1214 | devrec->rx_lqi_trx.rx_buf = devrec->rx_lqi_buf; | |
1215 | spi_message_add_tail(&devrec->rx_lqi_trx, &devrec->rx_buf_msg); | |
1216 | } | |
1217 | ||
37441611 AA |
1218 | static void |
1219 | mrf24j40_setup_irq_spi_messages(struct mrf24j40 *devrec) | |
1220 | { | |
1221 | spi_message_init(&devrec->irq_msg); | |
1222 | devrec->irq_msg.context = devrec; | |
1223 | devrec->irq_msg.complete = mrf24j40_intstat_complete; | |
1224 | devrec->irq_trx.len = 2; | |
1225 | devrec->irq_trx.tx_buf = devrec->irq_buf; | |
1226 | devrec->irq_trx.rx_buf = devrec->irq_buf; | |
1227 | spi_message_add_tail(&devrec->irq_trx, &devrec->irq_msg); | |
1228 | } | |
1229 | ||
766928fb AA |
1230 | static void mrf24j40_phy_setup(struct mrf24j40 *devrec) |
1231 | { | |
d344c912 | 1232 | ieee802154_random_extended_addr(&devrec->hw->phy->perm_extended_addr); |
766928fb | 1233 | devrec->hw->phy->current_channel = 11; |
2323cf38 AA |
1234 | |
1235 | /* mrf24j40 supports max_minbe 0 - 3 */ | |
1236 | devrec->hw->phy->supported.max_minbe = 3; | |
1237 | /* datasheet doesn't say anything about max_be, but we have min_be | |
1238 | * So we assume the max_be default. | |
1239 | */ | |
1240 | devrec->hw->phy->supported.min_maxbe = 5; | |
1241 | devrec->hw->phy->supported.max_maxbe = 5; | |
f1d78127 | 1242 | |
eb24d061 | 1243 | devrec->hw->phy->cca.mode = NL802154_CCA_CARRIER; |
f1d78127 AA |
1244 | devrec->hw->phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) | |
1245 | BIT(NL802154_CCA_CARRIER) | | |
1246 | BIT(NL802154_CCA_ENERGY_CARRIER); | |
1247 | devrec->hw->phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND); | |
e33a0f96 AA |
1248 | |
1249 | devrec->hw->phy->cca_ed_level = -6900; | |
1250 | devrec->hw->phy->supported.cca_ed_levels = mrf24j40_ed_levels; | |
1251 | devrec->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(mrf24j40_ed_levels); | |
00250f78 AA |
1252 | |
1253 | switch (spi_get_device_id(devrec->spi)->driver_data) { | |
1254 | case MRF24J40: | |
1255 | case MRF24J40MA: | |
1256 | devrec->hw->phy->supported.tx_powers = mrf24j40ma_powers; | |
1257 | devrec->hw->phy->supported.tx_powers_size = ARRAY_SIZE(mrf24j40ma_powers); | |
1258 | devrec->hw->phy->flags |= WPAN_PHY_FLAG_TXPOWER; | |
1259 | break; | |
1260 | default: | |
1261 | break; | |
1262 | } | |
766928fb AA |
1263 | } |
1264 | ||
bb1f4606 | 1265 | static int mrf24j40_probe(struct spi_device *spi) |
3731a334 | 1266 | { |
afaf7fde | 1267 | int ret = -ENOMEM, irq_type; |
b2cfdf3c | 1268 | struct ieee802154_hw *hw; |
3731a334 AO |
1269 | struct mrf24j40 *devrec; |
1270 | ||
ca079ad6 | 1271 | dev_info(&spi->dev, "probe(). IRQ: %d\n", spi->irq); |
3731a334 | 1272 | |
b2cfdf3c AA |
1273 | /* Register with the 802154 subsystem */ |
1274 | ||
1275 | hw = ieee802154_alloc_hw(sizeof(*devrec), &mrf24j40_ops); | |
1276 | if (!hw) | |
0aaf43f5 | 1277 | goto err_ret; |
b2cfdf3c AA |
1278 | |
1279 | devrec = hw->priv; | |
1280 | devrec->spi = spi; | |
1281 | spi_set_drvdata(spi, devrec); | |
1282 | devrec->hw = hw; | |
1283 | devrec->hw->parent = &spi->dev; | |
1284 | devrec->hw->phy->supported.channels[0] = CHANNEL_MASK; | |
2323cf38 | 1285 | devrec->hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AFILT | |
8ba40417 AA |
1286 | IEEE802154_HW_CSMA_PARAMS | |
1287 | IEEE802154_HW_PROMISCUOUS; | |
b2cfdf3c | 1288 | |
e33a0f96 AA |
1289 | devrec->hw->phy->flags = WPAN_PHY_FLAG_CCA_MODE | |
1290 | WPAN_PHY_FLAG_CCA_ED_LEVEL; | |
f1d78127 | 1291 | |
6844a0e4 | 1292 | mrf24j40_setup_tx_spi_messages(devrec); |
c91a3011 | 1293 | mrf24j40_setup_rx_spi_messages(devrec); |
37441611 | 1294 | mrf24j40_setup_irq_spi_messages(devrec); |
6844a0e4 | 1295 | |
b0156792 AA |
1296 | devrec->regmap_short = devm_regmap_init_spi(spi, |
1297 | &mrf24j40_short_regmap); | |
1298 | if (IS_ERR(devrec->regmap_short)) { | |
1299 | ret = PTR_ERR(devrec->regmap_short); | |
1300 | dev_err(&spi->dev, "Failed to allocate short register map: %d\n", | |
1301 | ret); | |
1302 | goto err_register_device; | |
1303 | } | |
1304 | ||
1305 | devrec->regmap_long = devm_regmap_init(&spi->dev, | |
1306 | &mrf24j40_long_regmap_bus, | |
1307 | spi, &mrf24j40_long_regmap); | |
1308 | if (IS_ERR(devrec->regmap_long)) { | |
1309 | ret = PTR_ERR(devrec->regmap_long); | |
1310 | dev_err(&spi->dev, "Failed to allocate long register map: %d\n", | |
1311 | ret); | |
1312 | goto err_register_device; | |
1313 | } | |
1314 | ||
78aedb6b AA |
1315 | if (spi->max_speed_hz > MAX_SPI_SPEED_HZ) { |
1316 | dev_warn(&spi->dev, "spi clock above possible maximum: %d", | |
1317 | MAX_SPI_SPEED_HZ); | |
1318 | return -EINVAL; | |
1319 | } | |
3731a334 | 1320 | |
3dac9a79 | 1321 | ret = mrf24j40_hw_init(devrec); |
3731a334 | 1322 | if (ret) |
a339e184 | 1323 | goto err_register_device; |
3731a334 | 1324 | |
766928fb AA |
1325 | mrf24j40_phy_setup(devrec); |
1326 | ||
afaf7fde AA |
1327 | /* request IRQF_TRIGGER_LOW as fallback default */ |
1328 | irq_type = irq_get_trigger_type(spi->irq); | |
1329 | if (!irq_type) | |
1330 | irq_type = IRQF_TRIGGER_LOW; | |
1331 | ||
37441611 | 1332 | ret = devm_request_irq(&spi->dev, spi->irq, mrf24j40_isr, |
afaf7fde | 1333 | irq_type, dev_name(&spi->dev), devrec); |
3731a334 AO |
1334 | if (ret) { |
1335 | dev_err(printdev(devrec), "Unable to get IRQ"); | |
a339e184 | 1336 | goto err_register_device; |
3731a334 AO |
1337 | } |
1338 | ||
a339e184 AA |
1339 | dev_dbg(printdev(devrec), "registered mrf24j40\n"); |
1340 | ret = ieee802154_register_hw(devrec->hw); | |
1341 | if (ret) | |
1342 | goto err_register_device; | |
1343 | ||
3731a334 AO |
1344 | return 0; |
1345 | ||
3731a334 | 1346 | err_register_device: |
5a504397 | 1347 | ieee802154_free_hw(devrec->hw); |
0aaf43f5 | 1348 | err_ret: |
3731a334 AO |
1349 | return ret; |
1350 | } | |
1351 | ||
bb1f4606 | 1352 | static int mrf24j40_remove(struct spi_device *spi) |
3731a334 | 1353 | { |
4fa0a0ef | 1354 | struct mrf24j40 *devrec = spi_get_drvdata(spi); |
3731a334 AO |
1355 | |
1356 | dev_dbg(printdev(devrec), "remove\n"); | |
1357 | ||
5a504397 AA |
1358 | ieee802154_unregister_hw(devrec->hw); |
1359 | ieee802154_free_hw(devrec->hw); | |
3731a334 AO |
1360 | /* TODO: Will ieee802154_free_device() wait until ->xmit() is |
1361 | * complete? */ | |
1362 | ||
3731a334 AO |
1363 | return 0; |
1364 | } | |
1365 | ||
2e6fd648 AA |
1366 | static const struct of_device_id mrf24j40_of_match[] = { |
1367 | { .compatible = "microchip,mrf24j40", .data = (void *)MRF24J40 }, | |
1368 | { .compatible = "microchip,mrf24j40ma", .data = (void *)MRF24J40MA }, | |
1369 | { .compatible = "microchip,mrf24j40mc", .data = (void *)MRF24J40MC }, | |
1370 | { }, | |
1371 | }; | |
1372 | MODULE_DEVICE_TABLE(of, mrf24j40_of_match); | |
1373 | ||
3731a334 | 1374 | static const struct spi_device_id mrf24j40_ids[] = { |
db9e0ee8 SV |
1375 | { "mrf24j40", MRF24J40 }, |
1376 | { "mrf24j40ma", MRF24J40MA }, | |
1377 | { "mrf24j40mc", MRF24J40MC }, | |
3731a334 AO |
1378 | { }, |
1379 | }; | |
1380 | MODULE_DEVICE_TABLE(spi, mrf24j40_ids); | |
1381 | ||
1382 | static struct spi_driver mrf24j40_driver = { | |
1383 | .driver = { | |
2e6fd648 | 1384 | .of_match_table = of_match_ptr(mrf24j40_of_match), |
3731a334 | 1385 | .name = "mrf24j40", |
3731a334 AO |
1386 | }, |
1387 | .id_table = mrf24j40_ids, | |
1388 | .probe = mrf24j40_probe, | |
bb1f4606 | 1389 | .remove = mrf24j40_remove, |
3731a334 AO |
1390 | }; |
1391 | ||
3d4a1316 | 1392 | module_spi_driver(mrf24j40_driver); |
3731a334 AO |
1393 | |
1394 | MODULE_LICENSE("GPL"); | |
1395 | MODULE_AUTHOR("Alan Ott"); | |
1396 | MODULE_DESCRIPTION("MRF24J40 SPI 802.15.4 Controller Driver"); |