1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * This file is part of wl1271 |
4 | * |
5 | * Copyright (C) 2008-2009 Nokia Corporation |
6 | * |
7 | * Contact: Luciano Coelho <luciano.coelho@nokia.com> |
8 | */ |
9 | |
10 | #include <linux/interrupt.h> |
11 | #include <linux/irq.h> |
12 | #include <linux/module.h> |
13 | #include <linux/slab.h> |
14 | #include <linux/swab.h> |
15 | #include <linux/crc7.h> |
16 | #include <linux/spi/spi.h> |
17 | #include <linux/platform_device.h> |
18 | #include <linux/of_irq.h> |
19 | #include <linux/regulator/consumer.h> |
20 | |
21 | #include "wlcore.h" |
22 | #include "wl12xx_80211.h" |
23 | #include "io.h" |
24 | |
25 | #define WSPI_CMD_READ 0x40000000 |
26 | #define WSPI_CMD_WRITE 0x00000000 |
27 | #define WSPI_CMD_FIXED 0x20000000 |
28 | #define WSPI_CMD_BYTE_LENGTH 0x1FFE0000 |
29 | #define WSPI_CMD_BYTE_LENGTH_OFFSET 17 |
30 | #define WSPI_CMD_BYTE_ADDR 0x0001FFFF |
31 | |
32 | #define WSPI_INIT_CMD_CRC_LEN 5 |
33 | |
34 | #define WSPI_INIT_CMD_START 0x00 |
35 | #define WSPI_INIT_CMD_TX 0x40 |
36 | /* the extra bypass bit is sampled by the TNET as '1' */ |
37 | #define WSPI_INIT_CMD_BYPASS_BIT 0x80 |
38 | #define WSPI_INIT_CMD_FIXEDBUSY_LEN 0x07 |
39 | #define WSPI_INIT_CMD_EN_FIXEDBUSY 0x80 |
40 | #define WSPI_INIT_CMD_DIS_FIXEDBUSY 0x00 |
41 | #define WSPI_INIT_CMD_IOD 0x40 |
42 | #define WSPI_INIT_CMD_IP 0x20 |
43 | #define WSPI_INIT_CMD_CS 0x10 |
44 | #define WSPI_INIT_CMD_WS 0x08 |
45 | #define WSPI_INIT_CMD_WSPI 0x01 |
46 | #define WSPI_INIT_CMD_END 0x01 |
47 | |
48 | #define WSPI_INIT_CMD_LEN 8 |
49 | |
50 | #define HW_ACCESS_WSPI_FIXED_BUSY_LEN \ |
51 | ((WL1271_BUSY_WORD_LEN - 4) / sizeof(u32)) |
52 | #define HW_ACCESS_WSPI_INIT_CMD_MASK 0 |
53 | |
54 | /* HW limitation: maximum possible chunk size is 4095 bytes */ |
55 | #define WSPI_MAX_CHUNK_SIZE 4092 |
56 | |
57 | /* |
58 | * wl18xx driver aggregation buffer size is (13 * 4K) compared to |
59 | * (4 * 4K) for wl12xx, so use the larger buffer needed for wl18xx |
60 | */ |
61 | #define SPI_AGGR_BUFFER_SIZE (13 * SZ_4K) |
62 | |
63 | /* Maximum number of SPI write chunks */ |
64 | #define WSPI_MAX_NUM_OF_CHUNKS \ |
65 | ((SPI_AGGR_BUFFER_SIZE / WSPI_MAX_CHUNK_SIZE) + 1) |
66 | |
67 | static const struct wilink_family_data wl127x_data = { |
68 | .name = "wl127x" , |
69 | .nvs_name = "ti-connectivity/wl127x-nvs.bin" , |
70 | }; |
71 | |
72 | static const struct wilink_family_data wl128x_data = { |
73 | .name = "wl128x" , |
74 | .nvs_name = "ti-connectivity/wl128x-nvs.bin" , |
75 | }; |
76 | |
77 | static const struct wilink_family_data wl18xx_data = { |
78 | .name = "wl18xx" , |
79 | .cfg_name = "ti-connectivity/wl18xx-conf.bin" , |
80 | .nvs_name = "ti-connectivity/wl1271-nvs.bin" , |
81 | }; |
82 | |
83 | struct wl12xx_spi_glue { |
84 | struct device *dev; |
85 | struct platform_device *core; |
86 | struct regulator *reg; /* Power regulator */ |
87 | }; |
88 | |
89 | static void wl12xx_spi_reset(struct device *child) |
90 | { |
91 | struct wl12xx_spi_glue *glue = dev_get_drvdata(dev: child->parent); |
92 | u8 *cmd; |
93 | struct spi_transfer t; |
94 | struct spi_message m; |
95 | |
96 | cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL); |
97 | if (!cmd) { |
98 | dev_err(child->parent, |
99 | "could not allocate cmd for spi reset\n" ); |
100 | return; |
101 | } |
102 | |
103 | memset(&t, 0, sizeof(t)); |
104 | spi_message_init(m: &m); |
105 | |
106 | memset(cmd, 0xff, WSPI_INIT_CMD_LEN); |
107 | |
108 | t.tx_buf = cmd; |
109 | t.len = WSPI_INIT_CMD_LEN; |
110 | spi_message_add_tail(t: &t, m: &m); |
111 | |
112 | spi_sync(spi: to_spi_device(dev: glue->dev), message: &m); |
113 | |
114 | kfree(objp: cmd); |
115 | } |
116 | |
117 | static void wl12xx_spi_init(struct device *child) |
118 | { |
119 | struct wl12xx_spi_glue *glue = dev_get_drvdata(dev: child->parent); |
120 | struct spi_transfer t; |
121 | struct spi_message m; |
122 | struct spi_device *spi = to_spi_device(dev: glue->dev); |
123 | u8 *cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL); |
124 | |
125 | if (!cmd) { |
126 | dev_err(child->parent, |
127 | "could not allocate cmd for spi init\n" ); |
128 | return; |
129 | } |
130 | |
131 | memset(&t, 0, sizeof(t)); |
132 | spi_message_init(m: &m); |
133 | |
134 | /* |
135 | * Set WSPI_INIT_COMMAND |
136 | * the data is being send from the MSB to LSB |
137 | */ |
138 | cmd[0] = 0xff; |
139 | cmd[1] = 0xff; |
140 | cmd[2] = WSPI_INIT_CMD_START | WSPI_INIT_CMD_TX; |
141 | cmd[3] = 0; |
142 | cmd[4] = 0; |
143 | cmd[5] = HW_ACCESS_WSPI_INIT_CMD_MASK << 3; |
144 | cmd[5] |= HW_ACCESS_WSPI_FIXED_BUSY_LEN & WSPI_INIT_CMD_FIXEDBUSY_LEN; |
145 | |
146 | cmd[6] = WSPI_INIT_CMD_IOD | WSPI_INIT_CMD_IP | WSPI_INIT_CMD_CS |
147 | | WSPI_INIT_CMD_WSPI | WSPI_INIT_CMD_WS; |
148 | |
149 | if (HW_ACCESS_WSPI_FIXED_BUSY_LEN == 0) |
150 | cmd[6] |= WSPI_INIT_CMD_DIS_FIXEDBUSY; |
151 | else |
152 | cmd[6] |= WSPI_INIT_CMD_EN_FIXEDBUSY; |
153 | |
154 | cmd[7] = crc7_be(crc: 0, buffer: cmd+2, WSPI_INIT_CMD_CRC_LEN) | WSPI_INIT_CMD_END; |
155 | |
156 | /* |
157 | * The above is the logical order; it must actually be stored |
158 | * in the buffer byte-swapped. |
159 | */ |
160 | __swab32s(p: (u32 *)cmd); |
161 | __swab32s(p: (u32 *)cmd+1); |
162 | |
163 | t.tx_buf = cmd; |
164 | t.len = WSPI_INIT_CMD_LEN; |
165 | spi_message_add_tail(t: &t, m: &m); |
166 | |
167 | spi_sync(spi: to_spi_device(dev: glue->dev), message: &m); |
168 | |
169 | /* Send extra clocks with inverted CS (high). this is required |
170 | * by the wilink family in order to successfully enter WSPI mode. |
171 | */ |
172 | spi->mode ^= SPI_CS_HIGH; |
173 | memset(&m, 0, sizeof(m)); |
174 | spi_message_init(m: &m); |
175 | |
176 | cmd[0] = 0xff; |
177 | cmd[1] = 0xff; |
178 | cmd[2] = 0xff; |
179 | cmd[3] = 0xff; |
180 | __swab32s(p: (u32 *)cmd); |
181 | |
182 | t.tx_buf = cmd; |
183 | t.len = 4; |
184 | spi_message_add_tail(t: &t, m: &m); |
185 | |
186 | spi_sync(spi: to_spi_device(dev: glue->dev), message: &m); |
187 | |
188 | /* Restore chip select configuration to normal */ |
189 | spi->mode ^= SPI_CS_HIGH; |
190 | kfree(objp: cmd); |
191 | } |
192 | |
193 | #define WL1271_BUSY_WORD_TIMEOUT 1000 |
194 | |
195 | static int wl12xx_spi_read_busy(struct device *child) |
196 | { |
197 | struct wl12xx_spi_glue *glue = dev_get_drvdata(dev: child->parent); |
198 | struct wl1271 *wl = dev_get_drvdata(dev: child); |
199 | struct spi_transfer t[1]; |
200 | struct spi_message m; |
201 | u32 *busy_buf; |
202 | int num_busy_bytes = 0; |
203 | |
204 | /* |
205 | * Read further busy words from SPI until a non-busy word is |
206 | * encountered, then read the data itself into the buffer. |
207 | */ |
208 | |
209 | num_busy_bytes = WL1271_BUSY_WORD_TIMEOUT; |
210 | busy_buf = wl->buffer_busyword; |
211 | while (num_busy_bytes) { |
212 | num_busy_bytes--; |
213 | spi_message_init(m: &m); |
214 | memset(t, 0, sizeof(t)); |
215 | t[0].rx_buf = busy_buf; |
216 | t[0].len = sizeof(u32); |
217 | t[0].cs_change = true; |
218 | spi_message_add_tail(t: &t[0], m: &m); |
219 | spi_sync(spi: to_spi_device(dev: glue->dev), message: &m); |
220 | |
221 | if (*busy_buf & 0x1) |
222 | return 0; |
223 | } |
224 | |
225 | /* The SPI bus is unresponsive, the read failed. */ |
226 | dev_err(child->parent, "SPI read busy-word timeout!\n" ); |
227 | return -ETIMEDOUT; |
228 | } |
229 | |
230 | static int __must_check wl12xx_spi_raw_read(struct device *child, int addr, |
231 | void *buf, size_t len, bool fixed) |
232 | { |
233 | struct wl12xx_spi_glue *glue = dev_get_drvdata(dev: child->parent); |
234 | struct wl1271 *wl = dev_get_drvdata(dev: child); |
235 | struct spi_transfer t[2]; |
236 | struct spi_message m; |
237 | u32 *busy_buf; |
238 | u32 *cmd; |
239 | u32 chunk_len; |
240 | |
241 | while (len > 0) { |
242 | chunk_len = min_t(size_t, WSPI_MAX_CHUNK_SIZE, len); |
243 | |
244 | cmd = &wl->buffer_cmd; |
245 | busy_buf = wl->buffer_busyword; |
246 | |
247 | *cmd = 0; |
248 | *cmd |= WSPI_CMD_READ; |
249 | *cmd |= (chunk_len << WSPI_CMD_BYTE_LENGTH_OFFSET) & |
250 | WSPI_CMD_BYTE_LENGTH; |
251 | *cmd |= addr & WSPI_CMD_BYTE_ADDR; |
252 | |
253 | if (fixed) |
254 | *cmd |= WSPI_CMD_FIXED; |
255 | |
256 | spi_message_init(m: &m); |
257 | memset(t, 0, sizeof(t)); |
258 | |
259 | t[0].tx_buf = cmd; |
260 | t[0].len = 4; |
261 | t[0].cs_change = true; |
262 | spi_message_add_tail(t: &t[0], m: &m); |
263 | |
264 | /* Busy and non busy words read */ |
265 | t[1].rx_buf = busy_buf; |
266 | t[1].len = WL1271_BUSY_WORD_LEN; |
267 | t[1].cs_change = true; |
268 | spi_message_add_tail(t: &t[1], m: &m); |
269 | |
270 | spi_sync(spi: to_spi_device(dev: glue->dev), message: &m); |
271 | |
272 | if (!(busy_buf[WL1271_BUSY_WORD_CNT - 1] & 0x1) && |
273 | wl12xx_spi_read_busy(child)) { |
274 | memset(buf, 0, chunk_len); |
275 | return 0; |
276 | } |
277 | |
278 | spi_message_init(m: &m); |
279 | memset(t, 0, sizeof(t)); |
280 | |
281 | t[0].rx_buf = buf; |
282 | t[0].len = chunk_len; |
283 | t[0].cs_change = true; |
284 | spi_message_add_tail(t: &t[0], m: &m); |
285 | |
286 | spi_sync(spi: to_spi_device(dev: glue->dev), message: &m); |
287 | |
288 | if (!fixed) |
289 | addr += chunk_len; |
290 | buf += chunk_len; |
291 | len -= chunk_len; |
292 | } |
293 | |
294 | return 0; |
295 | } |
296 | |
297 | static int __wl12xx_spi_raw_write(struct device *child, int addr, |
298 | void *buf, size_t len, bool fixed) |
299 | { |
300 | struct wl12xx_spi_glue *glue = dev_get_drvdata(dev: child->parent); |
301 | struct spi_transfer *t; |
302 | struct spi_message m; |
303 | u32 commands[WSPI_MAX_NUM_OF_CHUNKS]; /* 1 command per chunk */ |
304 | u32 *cmd; |
305 | u32 chunk_len; |
306 | int i; |
307 | |
308 | /* SPI write buffers - 2 for each chunk */ |
309 | t = kzalloc(size: sizeof(*t) * 2 * WSPI_MAX_NUM_OF_CHUNKS, GFP_KERNEL); |
310 | if (!t) |
311 | return -ENOMEM; |
312 | |
313 | WARN_ON(len > SPI_AGGR_BUFFER_SIZE); |
314 | |
315 | spi_message_init(m: &m); |
316 | |
317 | cmd = &commands[0]; |
318 | i = 0; |
319 | while (len > 0) { |
320 | chunk_len = min_t(size_t, WSPI_MAX_CHUNK_SIZE, len); |
321 | |
322 | *cmd = 0; |
323 | *cmd |= WSPI_CMD_WRITE; |
324 | *cmd |= (chunk_len << WSPI_CMD_BYTE_LENGTH_OFFSET) & |
325 | WSPI_CMD_BYTE_LENGTH; |
326 | *cmd |= addr & WSPI_CMD_BYTE_ADDR; |
327 | |
328 | if (fixed) |
329 | *cmd |= WSPI_CMD_FIXED; |
330 | |
331 | t[i].tx_buf = cmd; |
332 | t[i].len = sizeof(*cmd); |
333 | spi_message_add_tail(t: &t[i++], m: &m); |
334 | |
335 | t[i].tx_buf = buf; |
336 | t[i].len = chunk_len; |
337 | spi_message_add_tail(t: &t[i++], m: &m); |
338 | |
339 | if (!fixed) |
340 | addr += chunk_len; |
341 | buf += chunk_len; |
342 | len -= chunk_len; |
343 | cmd++; |
344 | } |
345 | |
346 | spi_sync(spi: to_spi_device(dev: glue->dev), message: &m); |
347 | |
348 | kfree(objp: t); |
349 | return 0; |
350 | } |
351 | |
352 | static int __must_check wl12xx_spi_raw_write(struct device *child, int addr, |
353 | void *buf, size_t len, bool fixed) |
354 | { |
355 | /* The ELP wakeup write may fail the first time due to internal |
356 | * hardware latency. It is safer to send the wakeup command twice to |
357 | * avoid unexpected failures. |
358 | */ |
359 | if (addr == HW_ACCESS_ELP_CTRL_REG) |
360 | __wl12xx_spi_raw_write(child, addr, buf, len, fixed); |
361 | |
362 | return __wl12xx_spi_raw_write(child, addr, buf, len, fixed); |
363 | } |
364 | |
365 | /** |
366 | * wl12xx_spi_set_power - power on/off the wl12xx unit |
367 | * @child: wl12xx device handle. |
368 | * @enable: true/false to power on/off the unit. |
369 | * |
370 | * use the WiFi enable regulator to enable/disable the WiFi unit. |
371 | */ |
372 | static int wl12xx_spi_set_power(struct device *child, bool enable) |
373 | { |
374 | int ret = 0; |
375 | struct wl12xx_spi_glue *glue = dev_get_drvdata(dev: child->parent); |
376 | |
377 | WARN_ON(!glue->reg); |
378 | |
379 | /* Update regulator state */ |
380 | if (enable) { |
381 | ret = regulator_enable(regulator: glue->reg); |
382 | if (ret) |
383 | dev_err(child, "Power enable failure\n" ); |
384 | } else { |
385 | ret = regulator_disable(regulator: glue->reg); |
386 | if (ret) |
387 | dev_err(child, "Power disable failure\n" ); |
388 | } |
389 | |
390 | return ret; |
391 | } |
392 | |
393 | /* |
394 | * wl12xx_spi_set_block_size |
395 | * |
396 | * This function is not needed for spi mode, but need to be present. |
397 | * Without it defined the wlcore fallback to use the wrong packet |
398 | * allignment on tx. |
399 | */ |
400 | static void wl12xx_spi_set_block_size(struct device *child, |
401 | unsigned int blksz) |
402 | { |
403 | } |
404 | |
405 | static struct wl1271_if_operations spi_ops = { |
406 | .read = wl12xx_spi_raw_read, |
407 | .write = wl12xx_spi_raw_write, |
408 | .reset = wl12xx_spi_reset, |
409 | .init = wl12xx_spi_init, |
410 | .power = wl12xx_spi_set_power, |
411 | .set_block_size = wl12xx_spi_set_block_size, |
412 | }; |
413 | |
414 | static const struct of_device_id wlcore_spi_of_match_table[] = { |
415 | { .compatible = "ti,wl1271" , .data = &wl127x_data}, |
416 | { .compatible = "ti,wl1273" , .data = &wl127x_data}, |
417 | { .compatible = "ti,wl1281" , .data = &wl128x_data}, |
418 | { .compatible = "ti,wl1283" , .data = &wl128x_data}, |
419 | { .compatible = "ti,wl1285" , .data = &wl128x_data}, |
420 | { .compatible = "ti,wl1801" , .data = &wl18xx_data}, |
421 | { .compatible = "ti,wl1805" , .data = &wl18xx_data}, |
422 | { .compatible = "ti,wl1807" , .data = &wl18xx_data}, |
423 | { .compatible = "ti,wl1831" , .data = &wl18xx_data}, |
424 | { .compatible = "ti,wl1835" , .data = &wl18xx_data}, |
425 | { .compatible = "ti,wl1837" , .data = &wl18xx_data}, |
426 | { } |
427 | }; |
428 | MODULE_DEVICE_TABLE(of, wlcore_spi_of_match_table); |
429 | |
430 | /** |
431 | * wlcore_probe_of - DT node parsing. |
432 | * @spi: SPI slave device parameters. |
433 | * @glue: wl12xx SPI bus to slave device glue parameters. |
434 | * @pdev_data: wlcore device parameters |
435 | */ |
436 | static int wlcore_probe_of(struct spi_device *spi, struct wl12xx_spi_glue *glue, |
437 | struct wlcore_platdev_data *pdev_data) |
438 | { |
439 | struct device_node *dt_node = spi->dev.of_node; |
440 | const struct of_device_id *of_id; |
441 | |
442 | of_id = of_match_node(matches: wlcore_spi_of_match_table, node: dt_node); |
443 | if (!of_id) |
444 | return -ENODEV; |
445 | |
446 | pdev_data->family = of_id->data; |
447 | dev_info(&spi->dev, "selected chip family is %s\n" , |
448 | pdev_data->family->name); |
449 | |
450 | pdev_data->ref_clock_xtal = of_property_read_bool(np: dt_node, propname: "clock-xtal" ); |
451 | |
452 | /* optional clock frequency params */ |
453 | of_property_read_u32(np: dt_node, propname: "ref-clock-frequency" , |
454 | out_value: &pdev_data->ref_clock_freq); |
455 | of_property_read_u32(np: dt_node, propname: "tcxo-clock-frequency" , |
456 | out_value: &pdev_data->tcxo_clock_freq); |
457 | |
458 | return 0; |
459 | } |
460 | |
461 | static int wl1271_probe(struct spi_device *spi) |
462 | { |
463 | struct wl12xx_spi_glue *glue; |
464 | struct wlcore_platdev_data *pdev_data; |
465 | struct resource res[1]; |
466 | int ret; |
467 | |
468 | pdev_data = devm_kzalloc(dev: &spi->dev, size: sizeof(*pdev_data), GFP_KERNEL); |
469 | if (!pdev_data) |
470 | return -ENOMEM; |
471 | |
472 | pdev_data->if_ops = &spi_ops; |
473 | |
474 | glue = devm_kzalloc(dev: &spi->dev, size: sizeof(*glue), GFP_KERNEL); |
475 | if (!glue) { |
476 | dev_err(&spi->dev, "can't allocate glue\n" ); |
477 | return -ENOMEM; |
478 | } |
479 | |
480 | glue->dev = &spi->dev; |
481 | |
482 | spi_set_drvdata(spi, data: glue); |
483 | |
484 | /* This is the only SPI value that we need to set here, the rest |
485 | * comes from the board-peripherals file */ |
486 | spi->bits_per_word = 32; |
487 | |
488 | glue->reg = devm_regulator_get(dev: &spi->dev, id: "vwlan" ); |
489 | if (IS_ERR(ptr: glue->reg)) |
490 | return dev_err_probe(dev: glue->dev, err: PTR_ERR(ptr: glue->reg), |
491 | fmt: "can't get regulator\n" ); |
492 | |
493 | ret = wlcore_probe_of(spi, glue, pdev_data); |
494 | if (ret) { |
495 | dev_err(glue->dev, |
496 | "can't get device tree parameters (%d)\n" , ret); |
497 | return ret; |
498 | } |
499 | |
500 | ret = spi_setup(spi); |
501 | if (ret < 0) { |
502 | dev_err(glue->dev, "spi_setup failed\n" ); |
503 | return ret; |
504 | } |
505 | |
506 | glue->core = platform_device_alloc(name: pdev_data->family->name, |
507 | PLATFORM_DEVID_AUTO); |
508 | if (!glue->core) { |
509 | dev_err(glue->dev, "can't allocate platform_device\n" ); |
510 | return -ENOMEM; |
511 | } |
512 | |
513 | glue->core->dev.parent = &spi->dev; |
514 | |
515 | memset(res, 0x00, sizeof(res)); |
516 | |
517 | res[0].start = spi->irq; |
518 | res[0].flags = IORESOURCE_IRQ | irq_get_trigger_type(irq: spi->irq); |
519 | res[0].name = "irq" ; |
520 | |
521 | ret = platform_device_add_resources(pdev: glue->core, res, ARRAY_SIZE(res)); |
522 | if (ret) { |
523 | dev_err(glue->dev, "can't add resources\n" ); |
524 | goto out_dev_put; |
525 | } |
526 | |
527 | ret = platform_device_add_data(pdev: glue->core, data: pdev_data, |
528 | size: sizeof(*pdev_data)); |
529 | if (ret) { |
530 | dev_err(glue->dev, "can't add platform data\n" ); |
531 | goto out_dev_put; |
532 | } |
533 | |
534 | ret = platform_device_add(pdev: glue->core); |
535 | if (ret) { |
536 | dev_err(glue->dev, "can't register platform device\n" ); |
537 | goto out_dev_put; |
538 | } |
539 | |
540 | return 0; |
541 | |
542 | out_dev_put: |
543 | platform_device_put(pdev: glue->core); |
544 | return ret; |
545 | } |
546 | |
547 | static void wl1271_remove(struct spi_device *spi) |
548 | { |
549 | struct wl12xx_spi_glue *glue = spi_get_drvdata(spi); |
550 | |
551 | platform_device_unregister(glue->core); |
552 | } |
553 | |
554 | static struct spi_driver wl1271_spi_driver = { |
555 | .driver = { |
556 | .name = "wl1271_spi" , |
557 | .of_match_table = wlcore_spi_of_match_table, |
558 | }, |
559 | |
560 | .probe = wl1271_probe, |
561 | .remove = wl1271_remove, |
562 | }; |
563 | |
564 | module_spi_driver(wl1271_spi_driver); |
565 | MODULE_DESCRIPTION("TI WLAN SPI helpers" ); |
566 | MODULE_LICENSE("GPL" ); |
567 | MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>" ); |
568 | MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>" ); |
569 | MODULE_ALIAS("spi:wl1271" ); |
570 | |