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a056ab8c CC |
1 | /* |
2 | * HSI core. | |
3 | * | |
4 | * Copyright (C) 2010 Nokia Corporation. All rights reserved. | |
5 | * | |
6 | * Contact: Carlos Chinea <carlos.chinea@nokia.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
20 | * 02110-1301 USA | |
21 | */ | |
22 | #include <linux/hsi/hsi.h> | |
23 | #include <linux/compiler.h> | |
a056ab8c | 24 | #include <linux/list.h> |
a056ab8c CC |
25 | #include <linux/kobject.h> |
26 | #include <linux/slab.h> | |
27 | #include <linux/string.h> | |
ec1c56ff | 28 | #include <linux/notifier.h> |
a056ab8c CC |
29 | #include "hsi_core.h" |
30 | ||
a056ab8c CC |
31 | static ssize_t modalias_show(struct device *dev, |
32 | struct device_attribute *a __maybe_unused, char *buf) | |
33 | { | |
34 | return sprintf(buf, "hsi:%s\n", dev_name(dev)); | |
35 | } | |
00173146 | 36 | static DEVICE_ATTR_RO(modalias); |
a056ab8c | 37 | |
00173146 GKH |
38 | static struct attribute *hsi_bus_dev_attrs[] = { |
39 | &dev_attr_modalias.attr, | |
40 | NULL, | |
a056ab8c | 41 | }; |
00173146 | 42 | ATTRIBUTE_GROUPS(hsi_bus_dev); |
a056ab8c CC |
43 | |
44 | static int hsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) | |
45 | { | |
6f02b9e9 | 46 | add_uevent_var(env, "MODALIAS=hsi:%s", dev_name(dev)); |
a056ab8c CC |
47 | |
48 | return 0; | |
49 | } | |
50 | ||
51 | static int hsi_bus_match(struct device *dev, struct device_driver *driver) | |
52 | { | |
53 | return strcmp(dev_name(dev), driver->name) == 0; | |
54 | } | |
55 | ||
56 | static struct bus_type hsi_bus_type = { | |
57 | .name = "hsi", | |
00173146 | 58 | .dev_groups = hsi_bus_dev_groups, |
a056ab8c CC |
59 | .match = hsi_bus_match, |
60 | .uevent = hsi_bus_uevent, | |
61 | }; | |
62 | ||
63 | static void hsi_client_release(struct device *dev) | |
64 | { | |
a088cf16 SR |
65 | struct hsi_client *cl = to_hsi_client(dev); |
66 | ||
67 | kfree(cl->tx_cfg.channels); | |
68 | kfree(cl->rx_cfg.channels); | |
69 | kfree(cl); | |
a056ab8c CC |
70 | } |
71 | ||
72 | static void hsi_new_client(struct hsi_port *port, struct hsi_board_info *info) | |
73 | { | |
74 | struct hsi_client *cl; | |
a088cf16 | 75 | size_t size; |
a056ab8c CC |
76 | |
77 | cl = kzalloc(sizeof(*cl), GFP_KERNEL); | |
78 | if (!cl) | |
79 | return; | |
a088cf16 | 80 | |
a056ab8c | 81 | cl->tx_cfg = info->tx_cfg; |
a088cf16 SR |
82 | if (cl->tx_cfg.channels) { |
83 | size = cl->tx_cfg.num_channels * sizeof(*cl->tx_cfg.channels); | |
84 | cl->tx_cfg.channels = kzalloc(size , GFP_KERNEL); | |
85 | memcpy(cl->tx_cfg.channels, info->tx_cfg.channels, size); | |
86 | } | |
87 | ||
a056ab8c | 88 | cl->rx_cfg = info->rx_cfg; |
a088cf16 SR |
89 | if (cl->rx_cfg.channels) { |
90 | size = cl->rx_cfg.num_channels * sizeof(*cl->rx_cfg.channels); | |
91 | cl->rx_cfg.channels = kzalloc(size , GFP_KERNEL); | |
92 | memcpy(cl->rx_cfg.channels, info->rx_cfg.channels, size); | |
93 | } | |
94 | ||
a056ab8c CC |
95 | cl->device.bus = &hsi_bus_type; |
96 | cl->device.parent = &port->device; | |
97 | cl->device.release = hsi_client_release; | |
02aa2a37 | 98 | dev_set_name(&cl->device, "%s", info->name); |
a056ab8c | 99 | cl->device.platform_data = info->platform_data; |
a056ab8c CC |
100 | if (info->archdata) |
101 | cl->device.archdata = *info->archdata; | |
102 | if (device_register(&cl->device) < 0) { | |
103 | pr_err("hsi: failed to register client: %s\n", info->name); | |
90e41f9d | 104 | put_device(&cl->device); |
a056ab8c CC |
105 | } |
106 | } | |
107 | ||
108 | static void hsi_scan_board_info(struct hsi_controller *hsi) | |
109 | { | |
110 | struct hsi_cl_info *cl_info; | |
111 | struct hsi_port *p; | |
112 | ||
113 | list_for_each_entry(cl_info, &hsi_board_list, list) | |
114 | if (cl_info->info.hsi_id == hsi->id) { | |
115 | p = hsi_find_port_num(hsi, cl_info->info.port); | |
116 | if (!p) | |
117 | continue; | |
118 | hsi_new_client(p, &cl_info->info); | |
119 | } | |
120 | } | |
121 | ||
122 | static int hsi_remove_client(struct device *dev, void *data __maybe_unused) | |
123 | { | |
a056ab8c CC |
124 | device_unregister(dev); |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | static int hsi_remove_port(struct device *dev, void *data __maybe_unused) | |
130 | { | |
131 | device_for_each_child(dev, NULL, hsi_remove_client); | |
132 | device_unregister(dev); | |
133 | ||
134 | return 0; | |
135 | } | |
136 | ||
5a218ceb | 137 | static void hsi_controller_release(struct device *dev) |
a056ab8c | 138 | { |
5a218ceb CC |
139 | struct hsi_controller *hsi = to_hsi_controller(dev); |
140 | ||
141 | kfree(hsi->port); | |
142 | kfree(hsi); | |
a056ab8c CC |
143 | } |
144 | ||
5a218ceb | 145 | static void hsi_port_release(struct device *dev) |
a056ab8c | 146 | { |
5a218ceb | 147 | kfree(to_hsi_port(dev)); |
a056ab8c CC |
148 | } |
149 | ||
a0bf37ed SR |
150 | /** |
151 | * hsi_unregister_port - Unregister an HSI port | |
152 | * @port: The HSI port to unregister | |
153 | */ | |
154 | void hsi_port_unregister_clients(struct hsi_port *port) | |
155 | { | |
156 | device_for_each_child(&port->device, NULL, hsi_remove_client); | |
157 | } | |
158 | EXPORT_SYMBOL_GPL(hsi_port_unregister_clients); | |
159 | ||
a056ab8c CC |
160 | /** |
161 | * hsi_unregister_controller - Unregister an HSI controller | |
162 | * @hsi: The HSI controller to register | |
163 | */ | |
164 | void hsi_unregister_controller(struct hsi_controller *hsi) | |
165 | { | |
166 | device_for_each_child(&hsi->device, NULL, hsi_remove_port); | |
167 | device_unregister(&hsi->device); | |
168 | } | |
169 | EXPORT_SYMBOL_GPL(hsi_unregister_controller); | |
170 | ||
171 | /** | |
172 | * hsi_register_controller - Register an HSI controller and its ports | |
173 | * @hsi: The HSI controller to register | |
174 | * | |
175 | * Returns -errno on failure, 0 on success. | |
176 | */ | |
177 | int hsi_register_controller(struct hsi_controller *hsi) | |
178 | { | |
179 | unsigned int i; | |
180 | int err; | |
181 | ||
5a218ceb | 182 | err = device_add(&hsi->device); |
a056ab8c CC |
183 | if (err < 0) |
184 | return err; | |
185 | for (i = 0; i < hsi->num_ports; i++) { | |
5a218ceb | 186 | hsi->port[i]->device.parent = &hsi->device; |
5a218ceb | 187 | err = device_add(&hsi->port[i]->device); |
a056ab8c CC |
188 | if (err < 0) |
189 | goto out; | |
190 | } | |
191 | /* Populate HSI bus with HSI clients */ | |
192 | hsi_scan_board_info(hsi); | |
193 | ||
194 | return 0; | |
195 | out: | |
5a218ceb CC |
196 | while (i-- > 0) |
197 | device_del(&hsi->port[i]->device); | |
198 | device_del(&hsi->device); | |
a056ab8c CC |
199 | |
200 | return err; | |
201 | } | |
202 | EXPORT_SYMBOL_GPL(hsi_register_controller); | |
203 | ||
204 | /** | |
205 | * hsi_register_client_driver - Register an HSI client to the HSI bus | |
206 | * @drv: HSI client driver to register | |
207 | * | |
208 | * Returns -errno on failure, 0 on success. | |
209 | */ | |
210 | int hsi_register_client_driver(struct hsi_client_driver *drv) | |
211 | { | |
212 | drv->driver.bus = &hsi_bus_type; | |
213 | ||
214 | return driver_register(&drv->driver); | |
215 | } | |
216 | EXPORT_SYMBOL_GPL(hsi_register_client_driver); | |
217 | ||
218 | static inline int hsi_dummy_msg(struct hsi_msg *msg __maybe_unused) | |
219 | { | |
220 | return 0; | |
221 | } | |
222 | ||
223 | static inline int hsi_dummy_cl(struct hsi_client *cl __maybe_unused) | |
224 | { | |
225 | return 0; | |
226 | } | |
227 | ||
5a218ceb CC |
228 | /** |
229 | * hsi_put_controller - Free an HSI controller | |
230 | * | |
231 | * @hsi: Pointer to the HSI controller to freed | |
232 | * | |
233 | * HSI controller drivers should only use this function if they need | |
234 | * to free their allocated hsi_controller structures before a successful | |
235 | * call to hsi_register_controller. Other use is not allowed. | |
236 | */ | |
237 | void hsi_put_controller(struct hsi_controller *hsi) | |
238 | { | |
239 | unsigned int i; | |
240 | ||
241 | if (!hsi) | |
242 | return; | |
243 | ||
244 | for (i = 0; i < hsi->num_ports; i++) | |
245 | if (hsi->port && hsi->port[i]) | |
246 | put_device(&hsi->port[i]->device); | |
247 | put_device(&hsi->device); | |
248 | } | |
249 | EXPORT_SYMBOL_GPL(hsi_put_controller); | |
250 | ||
a056ab8c CC |
251 | /** |
252 | * hsi_alloc_controller - Allocate an HSI controller and its ports | |
253 | * @n_ports: Number of ports on the HSI controller | |
254 | * @flags: Kernel allocation flags | |
255 | * | |
256 | * Return NULL on failure or a pointer to an hsi_controller on success. | |
257 | */ | |
258 | struct hsi_controller *hsi_alloc_controller(unsigned int n_ports, gfp_t flags) | |
259 | { | |
260 | struct hsi_controller *hsi; | |
5a218ceb | 261 | struct hsi_port **port; |
a056ab8c CC |
262 | unsigned int i; |
263 | ||
264 | if (!n_ports) | |
265 | return NULL; | |
266 | ||
a056ab8c CC |
267 | hsi = kzalloc(sizeof(*hsi), flags); |
268 | if (!hsi) | |
5a218ceb CC |
269 | return NULL; |
270 | port = kzalloc(sizeof(*port)*n_ports, flags); | |
271 | if (!port) { | |
272 | kfree(hsi); | |
273 | return NULL; | |
a056ab8c CC |
274 | } |
275 | hsi->num_ports = n_ports; | |
276 | hsi->port = port; | |
5a218ceb CC |
277 | hsi->device.release = hsi_controller_release; |
278 | device_initialize(&hsi->device); | |
279 | ||
280 | for (i = 0; i < n_ports; i++) { | |
281 | port[i] = kzalloc(sizeof(**port), flags); | |
282 | if (port[i] == NULL) | |
283 | goto out; | |
284 | port[i]->num = i; | |
285 | port[i]->async = hsi_dummy_msg; | |
286 | port[i]->setup = hsi_dummy_cl; | |
287 | port[i]->flush = hsi_dummy_cl; | |
288 | port[i]->start_tx = hsi_dummy_cl; | |
289 | port[i]->stop_tx = hsi_dummy_cl; | |
290 | port[i]->release = hsi_dummy_cl; | |
291 | mutex_init(&port[i]->lock); | |
ec1c56ff | 292 | ATOMIC_INIT_NOTIFIER_HEAD(&port[i]->n_head); |
5a218ceb CC |
293 | dev_set_name(&port[i]->device, "port%d", i); |
294 | hsi->port[i]->device.release = hsi_port_release; | |
295 | device_initialize(&hsi->port[i]->device); | |
296 | } | |
a056ab8c CC |
297 | |
298 | return hsi; | |
299 | out: | |
5a218ceb | 300 | hsi_put_controller(hsi); |
a056ab8c CC |
301 | |
302 | return NULL; | |
303 | } | |
304 | EXPORT_SYMBOL_GPL(hsi_alloc_controller); | |
305 | ||
a056ab8c CC |
306 | /** |
307 | * hsi_free_msg - Free an HSI message | |
308 | * @msg: Pointer to the HSI message | |
309 | * | |
310 | * Client is responsible to free the buffers pointed by the scatterlists. | |
311 | */ | |
312 | void hsi_free_msg(struct hsi_msg *msg) | |
313 | { | |
314 | if (!msg) | |
315 | return; | |
316 | sg_free_table(&msg->sgt); | |
317 | kfree(msg); | |
318 | } | |
319 | EXPORT_SYMBOL_GPL(hsi_free_msg); | |
320 | ||
321 | /** | |
322 | * hsi_alloc_msg - Allocate an HSI message | |
323 | * @nents: Number of memory entries | |
324 | * @flags: Kernel allocation flags | |
325 | * | |
326 | * nents can be 0. This mainly makes sense for read transfer. | |
327 | * In that case, HSI drivers will call the complete callback when | |
328 | * there is data to be read without consuming it. | |
329 | * | |
330 | * Return NULL on failure or a pointer to an hsi_msg on success. | |
331 | */ | |
332 | struct hsi_msg *hsi_alloc_msg(unsigned int nents, gfp_t flags) | |
333 | { | |
334 | struct hsi_msg *msg; | |
335 | int err; | |
336 | ||
337 | msg = kzalloc(sizeof(*msg), flags); | |
338 | if (!msg) | |
339 | return NULL; | |
340 | ||
341 | if (!nents) | |
342 | return msg; | |
343 | ||
344 | err = sg_alloc_table(&msg->sgt, nents, flags); | |
345 | if (unlikely(err)) { | |
346 | kfree(msg); | |
347 | msg = NULL; | |
348 | } | |
349 | ||
350 | return msg; | |
351 | } | |
352 | EXPORT_SYMBOL_GPL(hsi_alloc_msg); | |
353 | ||
354 | /** | |
355 | * hsi_async - Submit an HSI transfer to the controller | |
356 | * @cl: HSI client sending the transfer | |
357 | * @msg: The HSI transfer passed to controller | |
358 | * | |
359 | * The HSI message must have the channel, ttype, complete and destructor | |
360 | * fields set beforehand. If nents > 0 then the client has to initialize | |
361 | * also the scatterlists to point to the buffers to write to or read from. | |
362 | * | |
363 | * HSI controllers relay on pre-allocated buffers from their clients and they | |
364 | * do not allocate buffers on their own. | |
365 | * | |
366 | * Once the HSI message transfer finishes, the HSI controller calls the | |
367 | * complete callback with the status and actual_len fields of the HSI message | |
368 | * updated. The complete callback can be called before returning from | |
369 | * hsi_async. | |
370 | * | |
371 | * Returns -errno on failure or 0 on success | |
372 | */ | |
373 | int hsi_async(struct hsi_client *cl, struct hsi_msg *msg) | |
374 | { | |
375 | struct hsi_port *port = hsi_get_port(cl); | |
376 | ||
377 | if (!hsi_port_claimed(cl)) | |
378 | return -EACCES; | |
379 | ||
380 | WARN_ON_ONCE(!msg->destructor || !msg->complete); | |
381 | msg->cl = cl; | |
382 | ||
383 | return port->async(msg); | |
384 | } | |
385 | EXPORT_SYMBOL_GPL(hsi_async); | |
386 | ||
387 | /** | |
388 | * hsi_claim_port - Claim the HSI client's port | |
389 | * @cl: HSI client that wants to claim its port | |
390 | * @share: Flag to indicate if the client wants to share the port or not. | |
391 | * | |
392 | * Returns -errno on failure, 0 on success. | |
393 | */ | |
394 | int hsi_claim_port(struct hsi_client *cl, unsigned int share) | |
395 | { | |
396 | struct hsi_port *port = hsi_get_port(cl); | |
397 | int err = 0; | |
398 | ||
399 | mutex_lock(&port->lock); | |
400 | if ((port->claimed) && (!port->shared || !share)) { | |
401 | err = -EBUSY; | |
402 | goto out; | |
403 | } | |
404 | if (!try_module_get(to_hsi_controller(port->device.parent)->owner)) { | |
405 | err = -ENODEV; | |
406 | goto out; | |
407 | } | |
408 | port->claimed++; | |
409 | port->shared = !!share; | |
410 | cl->pclaimed = 1; | |
411 | out: | |
412 | mutex_unlock(&port->lock); | |
413 | ||
414 | return err; | |
415 | } | |
416 | EXPORT_SYMBOL_GPL(hsi_claim_port); | |
417 | ||
418 | /** | |
419 | * hsi_release_port - Release the HSI client's port | |
420 | * @cl: HSI client which previously claimed its port | |
421 | */ | |
422 | void hsi_release_port(struct hsi_client *cl) | |
423 | { | |
424 | struct hsi_port *port = hsi_get_port(cl); | |
425 | ||
426 | mutex_lock(&port->lock); | |
427 | /* Allow HW driver to do some cleanup */ | |
428 | port->release(cl); | |
429 | if (cl->pclaimed) | |
430 | port->claimed--; | |
431 | BUG_ON(port->claimed < 0); | |
432 | cl->pclaimed = 0; | |
433 | if (!port->claimed) | |
434 | port->shared = 0; | |
435 | module_put(to_hsi_controller(port->device.parent)->owner); | |
436 | mutex_unlock(&port->lock); | |
437 | } | |
438 | EXPORT_SYMBOL_GPL(hsi_release_port); | |
439 | ||
ec1c56ff CC |
440 | static int hsi_event_notifier_call(struct notifier_block *nb, |
441 | unsigned long event, void *data __maybe_unused) | |
a056ab8c | 442 | { |
ec1c56ff CC |
443 | struct hsi_client *cl = container_of(nb, struct hsi_client, nb); |
444 | ||
445 | (*cl->ehandler)(cl, event); | |
a056ab8c CC |
446 | |
447 | return 0; | |
448 | } | |
449 | ||
ec1c56ff CC |
450 | /** |
451 | * hsi_register_port_event - Register a client to receive port events | |
452 | * @cl: HSI client that wants to receive port events | |
8eae508b | 453 | * @handler: Event handler callback |
ec1c56ff CC |
454 | * |
455 | * Clients should register a callback to be able to receive | |
456 | * events from the ports. Registration should happen after | |
457 | * claiming the port. | |
458 | * The handler can be called in interrupt context. | |
459 | * | |
460 | * Returns -errno on error, or 0 on success. | |
461 | */ | |
462 | int hsi_register_port_event(struct hsi_client *cl, | |
463 | void (*handler)(struct hsi_client *, unsigned long)) | |
a056ab8c | 464 | { |
ec1c56ff | 465 | struct hsi_port *port = hsi_get_port(cl); |
a056ab8c | 466 | |
ec1c56ff CC |
467 | if (!handler || cl->ehandler) |
468 | return -EINVAL; | |
469 | if (!hsi_port_claimed(cl)) | |
470 | return -EACCES; | |
471 | cl->ehandler = handler; | |
472 | cl->nb.notifier_call = hsi_event_notifier_call; | |
473 | ||
474 | return atomic_notifier_chain_register(&port->n_head, &cl->nb); | |
a056ab8c | 475 | } |
ec1c56ff | 476 | EXPORT_SYMBOL_GPL(hsi_register_port_event); |
a056ab8c | 477 | |
ec1c56ff CC |
478 | /** |
479 | * hsi_unregister_port_event - Stop receiving port events for a client | |
480 | * @cl: HSI client that wants to stop receiving port events | |
481 | * | |
482 | * Clients should call this function before releasing their associated | |
483 | * port. | |
484 | * | |
485 | * Returns -errno on error, or 0 on success. | |
486 | */ | |
487 | int hsi_unregister_port_event(struct hsi_client *cl) | |
a056ab8c | 488 | { |
ec1c56ff CC |
489 | struct hsi_port *port = hsi_get_port(cl); |
490 | int err; | |
a056ab8c | 491 | |
ec1c56ff | 492 | WARN_ON(!hsi_port_claimed(cl)); |
a056ab8c | 493 | |
ec1c56ff CC |
494 | err = atomic_notifier_chain_unregister(&port->n_head, &cl->nb); |
495 | if (!err) | |
496 | cl->ehandler = NULL; | |
497 | ||
498 | return err; | |
a056ab8c | 499 | } |
ec1c56ff | 500 | EXPORT_SYMBOL_GPL(hsi_unregister_port_event); |
a056ab8c CC |
501 | |
502 | /** | |
503 | * hsi_event -Notifies clients about port events | |
504 | * @port: Port where the event occurred | |
505 | * @event: The event type | |
506 | * | |
507 | * Clients should not be concerned about wake line behavior. However, due | |
508 | * to a race condition in HSI HW protocol, clients need to be notified | |
509 | * about wake line changes, so they can implement a workaround for it. | |
510 | * | |
511 | * Events: | |
512 | * HSI_EVENT_START_RX - Incoming wake line high | |
513 | * HSI_EVENT_STOP_RX - Incoming wake line down | |
ec1c56ff CC |
514 | * |
515 | * Returns -errno on error, or 0 on success. | |
a056ab8c | 516 | */ |
ec1c56ff | 517 | int hsi_event(struct hsi_port *port, unsigned long event) |
a056ab8c | 518 | { |
ec1c56ff | 519 | return atomic_notifier_call_chain(&port->n_head, event, NULL); |
a056ab8c CC |
520 | } |
521 | EXPORT_SYMBOL_GPL(hsi_event); | |
522 | ||
a088cf16 SR |
523 | /** |
524 | * hsi_get_channel_id_by_name - acquire channel id by channel name | |
525 | * @cl: HSI client, which uses the channel | |
526 | * @name: name the channel is known under | |
527 | * | |
528 | * Clients can call this function to get the hsi channel ids similar to | |
529 | * requesting IRQs or GPIOs by name. This function assumes the same | |
530 | * channel configuration is used for RX and TX. | |
531 | * | |
532 | * Returns -errno on error or channel id on success. | |
533 | */ | |
534 | int hsi_get_channel_id_by_name(struct hsi_client *cl, char *name) | |
535 | { | |
536 | int i; | |
537 | ||
538 | if (!cl->rx_cfg.channels) | |
539 | return -ENOENT; | |
540 | ||
541 | for (i = 0; i < cl->rx_cfg.num_channels; i++) | |
542 | if (!strcmp(cl->rx_cfg.channels[i].name, name)) | |
543 | return cl->rx_cfg.channels[i].id; | |
544 | ||
545 | return -ENXIO; | |
546 | } | |
547 | EXPORT_SYMBOL_GPL(hsi_get_channel_id_by_name); | |
548 | ||
a056ab8c CC |
549 | static int __init hsi_init(void) |
550 | { | |
551 | return bus_register(&hsi_bus_type); | |
552 | } | |
553 | postcore_initcall(hsi_init); | |
554 | ||
555 | static void __exit hsi_exit(void) | |
556 | { | |
557 | bus_unregister(&hsi_bus_type); | |
558 | } | |
559 | module_exit(hsi_exit); | |
560 | ||
561 | MODULE_AUTHOR("Carlos Chinea <carlos.chinea@nokia.com>"); | |
562 | MODULE_DESCRIPTION("High-speed Synchronous Serial Interface (HSI) framework"); | |
563 | MODULE_LICENSE("GPL v2"); |