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Merge branch 'for-linus' of git://git.infradead.org/users/sameo/mfd-2.6
[linux-btrfs-devel.git] / drivers / media / dvb / siano / smscoreapi.c
blob7331e8450d1a7d96caa64b2ba88e3d13be622b6f
1 /*
2 * Siano core API module
3 *
4 * This file contains implementation for the interface to sms core component
5 *
6 * author: Uri Shkolnik
7 *
8 * Copyright (c), 2005-2008 Siano Mobile Silicon, Inc.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation;
13 *
14 * Software distributed under the License is distributed on an "AS IS"
15 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
16 *
17 * See the GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24 #include <linux/kernel.h>
25 #include <linux/init.h>
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/dma-mapping.h>
29 #include <linux/delay.h>
30 #include <linux/io.h>
31 #include <linux/slab.h>
32
33 #include <linux/firmware.h>
34 #include <linux/wait.h>
35 #include <asm/byteorder.h>
36
37 #include "smscoreapi.h"
38 #include "sms-cards.h"
39 #include "smsir.h"
40 #include "smsendian.h"
41
42 static int sms_dbg;
43 module_param_named(debug, sms_dbg, int, 0644);
44 MODULE_PARM_DESC(debug, "set debug level (info=1, adv=2 (or-able))");
45
46 struct smscore_device_notifyee_t {
47 struct list_head entry;
48 hotplug_t hotplug;
49 };
50
51 struct smscore_idlist_t {
52 struct list_head entry;
53 int id;
54 int data_type;
55 };
56
57 struct smscore_client_t {
58 struct list_head entry;
59 struct smscore_device_t *coredev;
60 void *context;
61 struct list_head idlist;
62 onresponse_t onresponse_handler;
63 onremove_t onremove_handler;
64 };
65
66 void smscore_set_board_id(struct smscore_device_t *core, int id)
67 {
68 core->board_id = id;
69 }
70
71 int smscore_led_state(struct smscore_device_t *core, int led)
72 {
73 if (led >= 0)
74 core->led_state = led;
75 return core->led_state;
76 }
77 EXPORT_SYMBOL_GPL(smscore_set_board_id);
78
79 int smscore_get_board_id(struct smscore_device_t *core)
80 {
81 return core->board_id;
82 }
83 EXPORT_SYMBOL_GPL(smscore_get_board_id);
84
85 struct smscore_registry_entry_t {
86 struct list_head entry;
87 char devpath[32];
88 int mode;
89 enum sms_device_type_st type;
90 };
91
92 static struct list_head g_smscore_notifyees;
93 static struct list_head g_smscore_devices;
94 static struct mutex g_smscore_deviceslock;
95
96 static struct list_head g_smscore_registry;
97 static struct mutex g_smscore_registrylock;
98
99 static int default_mode = 4;
100
101 module_param(default_mode, int, 0644);
102 MODULE_PARM_DESC(default_mode, "default firmware id (device mode)");
103
104 static struct smscore_registry_entry_t *smscore_find_registry(char *devpath)
105 {
106 struct smscore_registry_entry_t *entry;
107 struct list_head *next;
108
109 kmutex_lock(&g_smscore_registrylock);
110 for (next = g_smscore_registry.next;
111 next != &g_smscore_registry;
112 next = next->next) {
113 entry = (struct smscore_registry_entry_t *) next;
114 if (!strcmp(entry->devpath, devpath)) {
115 kmutex_unlock(&g_smscore_registrylock);
116 return entry;
117 }
118 }
119 entry = kmalloc(sizeof(struct smscore_registry_entry_t), GFP_KERNEL);
120 if (entry) {
121 entry->mode = default_mode;
122 strcpy(entry->devpath, devpath);
123 list_add(&entry->entry, &g_smscore_registry);
124 } else
125 sms_err("failed to create smscore_registry.");
126 kmutex_unlock(&g_smscore_registrylock);
127 return entry;
128 }
129
130 int smscore_registry_getmode(char *devpath)
131 {
132 struct smscore_registry_entry_t *entry;
133
134 entry = smscore_find_registry(devpath);
135 if (entry)
136 return entry->mode;
137 else
138 sms_err("No registry found.");
139
140 return default_mode;
141 }
142 EXPORT_SYMBOL_GPL(smscore_registry_getmode);
143
144 static enum sms_device_type_st smscore_registry_gettype(char *devpath)
145 {
146 struct smscore_registry_entry_t *entry;
147
148 entry = smscore_find_registry(devpath);
149 if (entry)
150 return entry->type;
151 else
152 sms_err("No registry found.");
153
154 return -1;
155 }
156
157 void smscore_registry_setmode(char *devpath, int mode)
158 {
159 struct smscore_registry_entry_t *entry;
160
161 entry = smscore_find_registry(devpath);
162 if (entry)
163 entry->mode = mode;
164 else
165 sms_err("No registry found.");
166 }
167
168 static void smscore_registry_settype(char *devpath,
169 enum sms_device_type_st type)
170 {
171 struct smscore_registry_entry_t *entry;
172
173 entry = smscore_find_registry(devpath);
174 if (entry)
175 entry->type = type;
176 else
177 sms_err("No registry found.");
178 }
179
180
181 static void list_add_locked(struct list_head *new, struct list_head *head,
182 spinlock_t *lock)
183 {
184 unsigned long flags;
185
186 spin_lock_irqsave(lock, flags);
187
188 list_add(new, head);
189
190 spin_unlock_irqrestore(lock, flags);
191 }
192
193 /**
194 * register a client callback that called when device plugged in/unplugged
195 * NOTE: if devices exist callback is called immediately for each device
196 *
197 * @param hotplug callback
198 *
199 * @return 0 on success, <0 on error.
200 */
201 int smscore_register_hotplug(hotplug_t hotplug)
202 {
203 struct smscore_device_notifyee_t *notifyee;
204 struct list_head *next, *first;
205 int rc = 0;
206
207 kmutex_lock(&g_smscore_deviceslock);
208
209 notifyee = kmalloc(sizeof(struct smscore_device_notifyee_t),
210 GFP_KERNEL);
211 if (notifyee) {
212 /* now notify callback about existing devices */
213 first = &g_smscore_devices;
214 for (next = first->next;
215 next != first && !rc;
216 next = next->next) {
217 struct smscore_device_t *coredev =
218 (struct smscore_device_t *) next;
219 rc = hotplug(coredev, coredev->device, 1);
220 }
221
222 if (rc >= 0) {
223 notifyee->hotplug = hotplug;
224 list_add(&notifyee->entry, &g_smscore_notifyees);
225 } else
226 kfree(notifyee);
227 } else
228 rc = -ENOMEM;
229
230 kmutex_unlock(&g_smscore_deviceslock);
231
232 return rc;
233 }
234 EXPORT_SYMBOL_GPL(smscore_register_hotplug);
235
236 /**
237 * unregister a client callback that called when device plugged in/unplugged
238 *
239 * @param hotplug callback
240 *
241 */
242 void smscore_unregister_hotplug(hotplug_t hotplug)
243 {
244 struct list_head *next, *first;
245
246 kmutex_lock(&g_smscore_deviceslock);
247
248 first = &g_smscore_notifyees;
249
250 for (next = first->next; next != first;) {
251 struct smscore_device_notifyee_t *notifyee =
252 (struct smscore_device_notifyee_t *) next;
253 next = next->next;
254
255 if (notifyee->hotplug == hotplug) {
256 list_del(&notifyee->entry);
257 kfree(notifyee);
258 }
259 }
260
261 kmutex_unlock(&g_smscore_deviceslock);
262 }
263 EXPORT_SYMBOL_GPL(smscore_unregister_hotplug);
264
265 static void smscore_notify_clients(struct smscore_device_t *coredev)
266 {
267 struct smscore_client_t *client;
268
269 /* the client must call smscore_unregister_client from remove handler */
270 while (!list_empty(&coredev->clients)) {
271 client = (struct smscore_client_t *) coredev->clients.next;
272 client->onremove_handler(client->context);
273 }
274 }
275
276 static int smscore_notify_callbacks(struct smscore_device_t *coredev,
277 struct device *device, int arrival)
278 {
279 struct list_head *next, *first;
280 int rc = 0;
281
282 /* note: must be called under g_deviceslock */
283
284 first = &g_smscore_notifyees;
285
286 for (next = first->next; next != first; next = next->next) {
287 rc = ((struct smscore_device_notifyee_t *) next)->
288 hotplug(coredev, device, arrival);
289 if (rc < 0)
290 break;
291 }
292
293 return rc;
294 }
295
296 static struct
297 smscore_buffer_t *smscore_createbuffer(u8 *buffer, void *common_buffer,
298 dma_addr_t common_buffer_phys)
299 {
300 struct smscore_buffer_t *cb =
301 kmalloc(sizeof(struct smscore_buffer_t), GFP_KERNEL);
302 if (!cb) {
303 sms_info("kmalloc(...) failed");
304 return NULL;
305 }
306
307 cb->p = buffer;
308 cb->offset_in_common = buffer - (u8 *) common_buffer;
309 cb->phys = common_buffer_phys + cb->offset_in_common;
310
311 return cb;
312 }
313
314 /**
315 * creates coredev object for a device, prepares buffers,
316 * creates buffer mappings, notifies registered hotplugs about new device.
317 *
318 * @param params device pointer to struct with device specific parameters
319 * and handlers
320 * @param coredev pointer to a value that receives created coredev object
321 *
322 * @return 0 on success, <0 on error.
323 */
324 int smscore_register_device(struct smsdevice_params_t *params,
325 struct smscore_device_t **coredev)
326 {
327 struct smscore_device_t *dev;
328 u8 *buffer;
329
330 dev = kzalloc(sizeof(struct smscore_device_t), GFP_KERNEL);
331 if (!dev) {
332 sms_info("kzalloc(...) failed");
333 return -ENOMEM;
334 }
335
336 /* init list entry so it could be safe in smscore_unregister_device */
337 INIT_LIST_HEAD(&dev->entry);
338
339 /* init queues */
340 INIT_LIST_HEAD(&dev->clients);
341 INIT_LIST_HEAD(&dev->buffers);
342
343 /* init locks */
344 spin_lock_init(&dev->clientslock);
345 spin_lock_init(&dev->bufferslock);
346
347 /* init completion events */
348 init_completion(&dev->version_ex_done);
349 init_completion(&dev->data_download_done);
350 init_completion(&dev->trigger_done);
351 init_completion(&dev->init_device_done);
352 init_completion(&dev->reload_start_done);
353 init_completion(&dev->resume_done);
354 init_completion(&dev->gpio_configuration_done);
355 init_completion(&dev->gpio_set_level_done);
356 init_completion(&dev->gpio_get_level_done);
357 init_completion(&dev->ir_init_done);
358
359 /* Buffer management */
360 init_waitqueue_head(&dev->buffer_mng_waitq);
361
362 /* alloc common buffer */
363 dev->common_buffer_size = params->buffer_size * params->num_buffers;
364 dev->common_buffer = dma_alloc_coherent(NULL, dev->common_buffer_size,
365 &dev->common_buffer_phys,
366 GFP_KERNEL | GFP_DMA);
367 if (!dev->common_buffer) {
368 smscore_unregister_device(dev);
369 return -ENOMEM;
370 }
371
372 /* prepare dma buffers */
373 for (buffer = dev->common_buffer;
374 dev->num_buffers < params->num_buffers;
375 dev->num_buffers++, buffer += params->buffer_size) {
376 struct smscore_buffer_t *cb =
377 smscore_createbuffer(buffer, dev->common_buffer,
378 dev->common_buffer_phys);
379 if (!cb) {
380 smscore_unregister_device(dev);
381 return -ENOMEM;
382 }
383
384 smscore_putbuffer(dev, cb);
385 }
386
387 sms_info("allocated %d buffers", dev->num_buffers);
388
389 dev->mode = DEVICE_MODE_NONE;
390 dev->context = params->context;
391 dev->device = params->device;
392 dev->setmode_handler = params->setmode_handler;
393 dev->detectmode_handler = params->detectmode_handler;
394 dev->sendrequest_handler = params->sendrequest_handler;
395 dev->preload_handler = params->preload_handler;
396 dev->postload_handler = params->postload_handler;
397
398 dev->device_flags = params->flags;
399 strcpy(dev->devpath, params->devpath);
400
401 smscore_registry_settype(dev->devpath, params->device_type);
402
403 /* add device to devices list */
404 kmutex_lock(&g_smscore_deviceslock);
405 list_add(&dev->entry, &g_smscore_devices);
406 kmutex_unlock(&g_smscore_deviceslock);
407
408 *coredev = dev;
409
410 sms_info("device %p created", dev);
411
412 return 0;
413 }
414 EXPORT_SYMBOL_GPL(smscore_register_device);
415
416
417 static int smscore_sendrequest_and_wait(struct smscore_device_t *coredev,
418 void *buffer, size_t size, struct completion *completion) {
419 int rc = coredev->sendrequest_handler(coredev->context, buffer, size);
420 if (rc < 0) {
421 sms_info("sendrequest returned error %d", rc);
422 return rc;
423 }
424
425 return wait_for_completion_timeout(completion,
426 msecs_to_jiffies(SMS_PROTOCOL_MAX_RAOUNDTRIP_MS)) ?
427 0 : -ETIME;
428 }
429
430 /**
431 * Starts & enables IR operations
432 *
433 * @return 0 on success, < 0 on error.
434 */
435 static int smscore_init_ir(struct smscore_device_t *coredev)
436 {
437 int ir_io;
438 int rc;
439 void *buffer;
440
441 coredev->ir.dev = NULL;
442 ir_io = sms_get_board(smscore_get_board_id(coredev))->board_cfg.ir;
443 if (ir_io) {/* only if IR port exist we use IR sub-module */
444 sms_info("IR loading");
445 rc = sms_ir_init(coredev);
446
447 if (rc != 0)
448 sms_err("Error initialization DTV IR sub-module");
449 else {
450 buffer = kmalloc(sizeof(struct SmsMsgData_ST2) +
451 SMS_DMA_ALIGNMENT,
452 GFP_KERNEL | GFP_DMA);
453 if (buffer) {
454 struct SmsMsgData_ST2 *msg =
455 (struct SmsMsgData_ST2 *)
456 SMS_ALIGN_ADDRESS(buffer);
457
458 SMS_INIT_MSG(&msg->xMsgHeader,
459 MSG_SMS_START_IR_REQ,
460 sizeof(struct SmsMsgData_ST2));
461 msg->msgData[0] = coredev->ir.controller;
462 msg->msgData[1] = coredev->ir.timeout;
463
464 smsendian_handle_tx_message(
465 (struct SmsMsgHdr_ST2 *)msg);
466 rc = smscore_sendrequest_and_wait(coredev, msg,
467 msg->xMsgHeader. msgLength,
468 &coredev->ir_init_done);
469
470 kfree(buffer);
471 } else
472 sms_err
473 ("Sending IR initialization message failed");
474 }
475 } else
476 sms_info("IR port has not been detected");
477
478 return 0;
479 }
480
481 /**
482 * sets initial device mode and notifies client hotplugs that device is ready
483 *
484 * @param coredev pointer to a coredev object returned by
485 * smscore_register_device
486 *
487 * @return 0 on success, <0 on error.
488 */
489 int smscore_start_device(struct smscore_device_t *coredev)
490 {
491 int rc = smscore_set_device_mode(
492 coredev, smscore_registry_getmode(coredev->devpath));
493 if (rc < 0) {
494 sms_info("set device mode faile , rc %d", rc);
495 return rc;
496 }
497
498 kmutex_lock(&g_smscore_deviceslock);
499
500 rc = smscore_notify_callbacks(coredev, coredev->device, 1);
501 smscore_init_ir(coredev);
502
503 sms_info("device %p started, rc %d", coredev, rc);
504
505 kmutex_unlock(&g_smscore_deviceslock);
506
507 return rc;
508 }
509 EXPORT_SYMBOL_GPL(smscore_start_device);
510
511
512 static int smscore_load_firmware_family2(struct smscore_device_t *coredev,
513 void *buffer, size_t size)
514 {
515 struct SmsFirmware_ST *firmware = (struct SmsFirmware_ST *) buffer;
516 struct SmsMsgHdr_ST *msg;
517 u32 mem_address;
518 u8 *payload = firmware->Payload;
519 int rc = 0;
520 firmware->StartAddress = le32_to_cpu(firmware->StartAddress);
521 firmware->Length = le32_to_cpu(firmware->Length);
522
523 mem_address = firmware->StartAddress;
524
525 sms_info("loading FW to addr 0x%x size %d",
526 mem_address, firmware->Length);
527 if (coredev->preload_handler) {
528 rc = coredev->preload_handler(coredev->context);
529 if (rc < 0)
530 return rc;
531 }
532
533 /* PAGE_SIZE buffer shall be enough and dma aligned */
534 msg = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA);
535 if (!msg)
536 return -ENOMEM;
537
538 if (coredev->mode != DEVICE_MODE_NONE) {
539 sms_debug("sending reload command.");
540 SMS_INIT_MSG(msg, MSG_SW_RELOAD_START_REQ,
541 sizeof(struct SmsMsgHdr_ST));
542 rc = smscore_sendrequest_and_wait(coredev, msg,
543 msg->msgLength,
544 &coredev->reload_start_done);
545 mem_address = *(u32 *) &payload[20];
546 }
547
548 while (size && rc >= 0) {
549 struct SmsDataDownload_ST *DataMsg =
550 (struct SmsDataDownload_ST *) msg;
551 int payload_size = min((int) size, SMS_MAX_PAYLOAD_SIZE);
552
553 SMS_INIT_MSG(msg, MSG_SMS_DATA_DOWNLOAD_REQ,
554 (u16)(sizeof(struct SmsMsgHdr_ST) +
555 sizeof(u32) + payload_size));
556
557 DataMsg->MemAddr = mem_address;
558 memcpy(DataMsg->Payload, payload, payload_size);
559
560 if ((coredev->device_flags & SMS_ROM_NO_RESPONSE) &&
561 (coredev->mode == DEVICE_MODE_NONE))
562 rc = coredev->sendrequest_handler(
563 coredev->context, DataMsg,
564 DataMsg->xMsgHeader.msgLength);
565 else
566 rc = smscore_sendrequest_and_wait(
567 coredev, DataMsg,
568 DataMsg->xMsgHeader.msgLength,
569 &coredev->data_download_done);
570
571 payload += payload_size;
572 size -= payload_size;
573 mem_address += payload_size;
574 }
575
576 if (rc >= 0) {
577 if (coredev->mode == DEVICE_MODE_NONE) {
578 struct SmsMsgData_ST *TriggerMsg =
579 (struct SmsMsgData_ST *) msg;
580
581 SMS_INIT_MSG(msg, MSG_SMS_SWDOWNLOAD_TRIGGER_REQ,
582 sizeof(struct SmsMsgHdr_ST) +
583 sizeof(u32) * 5);
584
585 TriggerMsg->msgData[0] = firmware->StartAddress;
586 /* Entry point */
587 TriggerMsg->msgData[1] = 5; /* Priority */
588 TriggerMsg->msgData[2] = 0x200; /* Stack size */
589 TriggerMsg->msgData[3] = 0; /* Parameter */
590 TriggerMsg->msgData[4] = 4; /* Task ID */
591
592 if (coredev->device_flags & SMS_ROM_NO_RESPONSE) {
593 rc = coredev->sendrequest_handler(
594 coredev->context, TriggerMsg,
595 TriggerMsg->xMsgHeader.msgLength);
596 msleep(100);
597 } else
598 rc = smscore_sendrequest_and_wait(
599 coredev, TriggerMsg,
600 TriggerMsg->xMsgHeader.msgLength,
601 &coredev->trigger_done);
602 } else {
603 SMS_INIT_MSG(msg, MSG_SW_RELOAD_EXEC_REQ,
604 sizeof(struct SmsMsgHdr_ST));
605
606 rc = coredev->sendrequest_handler(coredev->context,
607 msg, msg->msgLength);
608 }
609 msleep(500);
610 }
611
612 sms_debug("rc=%d, postload=%p ", rc,
613 coredev->postload_handler);
614
615 kfree(msg);
616
617 return ((rc >= 0) && coredev->postload_handler) ?
618 coredev->postload_handler(coredev->context) :
619 rc;
620 }
621
622 /**
623 * loads specified firmware into a buffer and calls device loadfirmware_handler
624 *
625 * @param coredev pointer to a coredev object returned by
626 * smscore_register_device
627 * @param filename null-terminated string specifies firmware file name
628 * @param loadfirmware_handler device handler that loads firmware
629 *
630 * @return 0 on success, <0 on error.
631 */
632 static int smscore_load_firmware_from_file(struct smscore_device_t *coredev,
633 char *filename,
634 loadfirmware_t loadfirmware_handler)
635 {
636 int rc = -ENOENT;
637 const struct firmware *fw;
638 u8 *fw_buffer;
639
640 if (loadfirmware_handler == NULL && !(coredev->device_flags &
641 SMS_DEVICE_FAMILY2))
642 return -EINVAL;
643
644 rc = request_firmware(&fw, filename, coredev->device);
645 if (rc < 0) {
646 sms_info("failed to open \"%s\"", filename);
647 return rc;
648 }
649 sms_info("read FW %s, size=%zd", filename, fw->size);
650 fw_buffer = kmalloc(ALIGN(fw->size, SMS_ALLOC_ALIGNMENT),
651 GFP_KERNEL | GFP_DMA);
652 if (fw_buffer) {
653 memcpy(fw_buffer, fw->data, fw->size);
654
655 rc = (coredev->device_flags & SMS_DEVICE_FAMILY2) ?
656 smscore_load_firmware_family2(coredev,
657 fw_buffer,
658 fw->size) :
659 loadfirmware_handler(coredev->context,
660 fw_buffer, fw->size);
661
662 kfree(fw_buffer);
663 } else {
664 sms_info("failed to allocate firmware buffer");
665 rc = -ENOMEM;
666 }
667
668 release_firmware(fw);
669
670 return rc;
671 }
672
673 /**
674 * notifies all clients registered with the device, notifies hotplugs,
675 * frees all buffers and coredev object
676 *
677 * @param coredev pointer to a coredev object returned by
678 * smscore_register_device
679 *
680 * @return 0 on success, <0 on error.
681 */
682 void smscore_unregister_device(struct smscore_device_t *coredev)
683 {
684 struct smscore_buffer_t *cb;
685 int num_buffers = 0;
686 int retry = 0;
687
688 kmutex_lock(&g_smscore_deviceslock);
689
690 /* Release input device (IR) resources */
691 sms_ir_exit(coredev);
692
693 smscore_notify_clients(coredev);
694 smscore_notify_callbacks(coredev, NULL, 0);
695
696 /* at this point all buffers should be back
697 * onresponse must no longer be called */
698
699 while (1) {
700 while (!list_empty(&coredev->buffers)) {
701 cb = (struct smscore_buffer_t *) coredev->buffers.next;
702 list_del(&cb->entry);
703 kfree(cb);
704 num_buffers++;
705 }
706 if (num_buffers == coredev->num_buffers)
707 break;
708 if (++retry > 10) {
709 sms_info("exiting although "
710 "not all buffers released.");
711 break;
712 }
713
714 sms_info("waiting for %d buffer(s)",
715 coredev->num_buffers - num_buffers);
716 msleep(100);
717 }
718
719 sms_info("freed %d buffers", num_buffers);
720
721 if (coredev->common_buffer)
722 dma_free_coherent(NULL, coredev->common_buffer_size,
723 coredev->common_buffer, coredev->common_buffer_phys);
724
725 if (coredev->fw_buf != NULL)
726 kfree(coredev->fw_buf);
727
728 list_del(&coredev->entry);
729 kfree(coredev);
730
731 kmutex_unlock(&g_smscore_deviceslock);
732
733 sms_info("device %p destroyed", coredev);
734 }
735 EXPORT_SYMBOL_GPL(smscore_unregister_device);
736
737 static int smscore_detect_mode(struct smscore_device_t *coredev)
738 {
739 void *buffer = kmalloc(sizeof(struct SmsMsgHdr_ST) + SMS_DMA_ALIGNMENT,
740 GFP_KERNEL | GFP_DMA);
741 struct SmsMsgHdr_ST *msg =
742 (struct SmsMsgHdr_ST *) SMS_ALIGN_ADDRESS(buffer);
743 int rc;
744
745 if (!buffer)
746 return -ENOMEM;
747
748 SMS_INIT_MSG(msg, MSG_SMS_GET_VERSION_EX_REQ,
749 sizeof(struct SmsMsgHdr_ST));
750
751 rc = smscore_sendrequest_and_wait(coredev, msg, msg->msgLength,
752 &coredev->version_ex_done);
753 if (rc == -ETIME) {
754 sms_err("MSG_SMS_GET_VERSION_EX_REQ failed first try");
755
756 if (wait_for_completion_timeout(&coredev->resume_done,
757 msecs_to_jiffies(5000))) {
758 rc = smscore_sendrequest_and_wait(
759 coredev, msg, msg->msgLength,
760 &coredev->version_ex_done);
761 if (rc < 0)
762 sms_err("MSG_SMS_GET_VERSION_EX_REQ failed "
763 "second try, rc %d", rc);
764 } else
765 rc = -ETIME;
766 }
767
768 kfree(buffer);
769
770 return rc;
771 }
772
773 static char *smscore_fw_lkup[][SMS_NUM_OF_DEVICE_TYPES] = {
774 /*Stellar NOVA A0 Nova B0 VEGA*/
775 /*DVBT*/
776 {"none", "dvb_nova_12mhz.inp", "dvb_nova_12mhz_b0.inp", "none"},
777 /*DVBH*/
778 {"none", "dvb_nova_12mhz.inp", "dvb_nova_12mhz_b0.inp", "none"},
779 /*TDMB*/
780 {"none", "tdmb_nova_12mhz.inp", "tdmb_nova_12mhz_b0.inp", "none"},
781 /*DABIP*/
782 {"none", "none", "none", "none"},
783 /*BDA*/
784 {"none", "dvb_nova_12mhz.inp", "dvb_nova_12mhz_b0.inp", "none"},
785 /*ISDBT*/
786 {"none", "isdbt_nova_12mhz.inp", "isdbt_nova_12mhz_b0.inp", "none"},
787 /*ISDBTBDA*/
788 {"none", "isdbt_nova_12mhz.inp", "isdbt_nova_12mhz_b0.inp", "none"},
789 /*CMMB*/
790 {"none", "none", "none", "cmmb_vega_12mhz.inp"}
791 };
792
793 static inline char *sms_get_fw_name(struct smscore_device_t *coredev,
794 int mode, enum sms_device_type_st type)
795 {
796 char **fw = sms_get_board(smscore_get_board_id(coredev))->fw;
797 return (fw && fw[mode]) ? fw[mode] : smscore_fw_lkup[mode][type];
798 }
799
800 /**
801 * calls device handler to change mode of operation
802 * NOTE: stellar/usb may disconnect when changing mode
803 *
804 * @param coredev pointer to a coredev object returned by
805 * smscore_register_device
806 * @param mode requested mode of operation
807 *
808 * @return 0 on success, <0 on error.
809 */
810 int smscore_set_device_mode(struct smscore_device_t *coredev, int mode)
811 {
812 void *buffer;
813 int rc = 0;
814 enum sms_device_type_st type;
815
816 sms_debug("set device mode to %d", mode);
817 if (coredev->device_flags & SMS_DEVICE_FAMILY2) {
818 if (mode < DEVICE_MODE_DVBT || mode >= DEVICE_MODE_RAW_TUNER) {
819 sms_err("invalid mode specified %d", mode);
820 return -EINVAL;
821 }
822
823 smscore_registry_setmode(coredev->devpath, mode);
824
825 if (!(coredev->device_flags & SMS_DEVICE_NOT_READY)) {
826 rc = smscore_detect_mode(coredev);
827 if (rc < 0) {
828 sms_err("mode detect failed %d", rc);
829 return rc;
830 }
831 }
832
833 if (coredev->mode == mode) {
834 sms_info("device mode %d already set", mode);
835 return 0;
836 }
837
838 if (!(coredev->modes_supported & (1 << mode))) {
839 char *fw_filename;
840
841 type = smscore_registry_gettype(coredev->devpath);
842 fw_filename = sms_get_fw_name(coredev, mode, type);
843
844 rc = smscore_load_firmware_from_file(coredev,
845 fw_filename, NULL);
846 if (rc < 0) {
847 sms_warn("error %d loading firmware: %s, "
848 "trying again with default firmware",
849 rc, fw_filename);
850
851 /* try again with the default firmware */
852 fw_filename = smscore_fw_lkup[mode][type];
853 rc = smscore_load_firmware_from_file(coredev,
854 fw_filename, NULL);
855
856 if (rc < 0) {
857 sms_warn("error %d loading "
858 "firmware: %s", rc,
859 fw_filename);
860 return rc;
861 }
862 }
863 sms_log("firmware download success: %s", fw_filename);
864 } else
865 sms_info("mode %d supported by running "
866 "firmware", mode);
867
868 buffer = kmalloc(sizeof(struct SmsMsgData_ST) +
869 SMS_DMA_ALIGNMENT, GFP_KERNEL | GFP_DMA);
870 if (buffer) {
871 struct SmsMsgData_ST *msg =
872 (struct SmsMsgData_ST *)
873 SMS_ALIGN_ADDRESS(buffer);
874
875 SMS_INIT_MSG(&msg->xMsgHeader, MSG_SMS_INIT_DEVICE_REQ,
876 sizeof(struct SmsMsgData_ST));
877 msg->msgData[0] = mode;
878
879 rc = smscore_sendrequest_and_wait(
880 coredev, msg, msg->xMsgHeader.msgLength,
881 &coredev->init_device_done);
882
883 kfree(buffer);
884 } else {
885 sms_err("Could not allocate buffer for "
886 "init device message.");
887 rc = -ENOMEM;
888 }
889 } else {
890 if (mode < DEVICE_MODE_DVBT || mode > DEVICE_MODE_DVBT_BDA) {
891 sms_err("invalid mode specified %d", mode);
892 return -EINVAL;
893 }
894
895 smscore_registry_setmode(coredev->devpath, mode);
896
897 if (coredev->detectmode_handler)
898 coredev->detectmode_handler(coredev->context,
899 &coredev->mode);
900
901 if (coredev->mode != mode && coredev->setmode_handler)
902 rc = coredev->setmode_handler(coredev->context, mode);
903 }
904
905 if (rc >= 0) {
906 coredev->mode = mode;
907 coredev->device_flags &= ~SMS_DEVICE_NOT_READY;
908 }
909
910 if (rc < 0)
911 sms_err("return error code %d.", rc);
912 return rc;
913 }
914
915 /**
916 * calls device handler to get current mode of operation
917 *
918 * @param coredev pointer to a coredev object returned by
919 * smscore_register_device
920 *
921 * @return current mode
922 */
923 int smscore_get_device_mode(struct smscore_device_t *coredev)
924 {
925 return coredev->mode;
926 }
927 EXPORT_SYMBOL_GPL(smscore_get_device_mode);
928
929 /**
930 * find client by response id & type within the clients list.
931 * return client handle or NULL.
932 *
933 * @param coredev pointer to a coredev object returned by
934 * smscore_register_device
935 * @param data_type client data type (SMS_DONT_CARE for all types)
936 * @param id client id (SMS_DONT_CARE for all id)
937 *
938 */
939 static struct
940 smscore_client_t *smscore_find_client(struct smscore_device_t *coredev,
941 int data_type, int id)
942 {
943 struct smscore_client_t *client = NULL;
944 struct list_head *next, *first;
945 unsigned long flags;
946 struct list_head *firstid, *nextid;
947
948
949 spin_lock_irqsave(&coredev->clientslock, flags);
950 first = &coredev->clients;
951 for (next = first->next;
952 (next != first) && !client;
953 next = next->next) {
954 firstid = &((struct smscore_client_t *)next)->idlist;
955 for (nextid = firstid->next;
956 nextid != firstid;
957 nextid = nextid->next) {
958 if ((((struct smscore_idlist_t *)nextid)->id == id) &&
959 (((struct smscore_idlist_t *)nextid)->data_type == data_type ||
960 (((struct smscore_idlist_t *)nextid)->data_type == 0))) {
961 client = (struct smscore_client_t *) next;
962 break;
963 }
964 }
965 }
966 spin_unlock_irqrestore(&coredev->clientslock, flags);
967 return client;
968 }
969
970 /**
971 * find client by response id/type, call clients onresponse handler
972 * return buffer to pool on error
973 *
974 * @param coredev pointer to a coredev object returned by
975 * smscore_register_device
976 * @param cb pointer to response buffer descriptor
977 *
978 */
979 void smscore_onresponse(struct smscore_device_t *coredev,
980 struct smscore_buffer_t *cb) {
981 struct SmsMsgHdr_ST *phdr = (struct SmsMsgHdr_ST *) ((u8 *) cb->p
982 + cb->offset);
983 struct smscore_client_t *client;
984 int rc = -EBUSY;
985 static unsigned long last_sample_time; /* = 0; */
986 static int data_total; /* = 0; */
987 unsigned long time_now = jiffies_to_msecs(jiffies);
988
989 if (!last_sample_time)
990 last_sample_time = time_now;
991
992 if (time_now - last_sample_time > 10000) {
993 sms_debug("\ndata rate %d bytes/secs",
994 (int)((data_total * 1000) /
995 (time_now - last_sample_time)));
996
997 last_sample_time = time_now;
998 data_total = 0;
999 }
1000
1001 data_total += cb->size;
1002 /* Do we need to re-route? */
1003 if ((phdr->msgType == MSG_SMS_HO_PER_SLICES_IND) ||
1004 (phdr->msgType == MSG_SMS_TRANSMISSION_IND)) {
1005 if (coredev->mode == DEVICE_MODE_DVBT_BDA)
1006 phdr->msgDstId = DVBT_BDA_CONTROL_MSG_ID;
1007 }
1008
1009
1010 client = smscore_find_client(coredev, phdr->msgType, phdr->msgDstId);
1011
1012 /* If no client registered for type & id,
1013 * check for control client where type is not registered */
1014 if (client)
1015 rc = client->onresponse_handler(client->context, cb);
1016
1017 if (rc < 0) {
1018 switch (phdr->msgType) {
1019 case MSG_SMS_GET_VERSION_EX_RES:
1020 {
1021 struct SmsVersionRes_ST *ver =
1022 (struct SmsVersionRes_ST *) phdr;
1023 sms_debug("MSG_SMS_GET_VERSION_EX_RES "
1024 "id %d prots 0x%x ver %d.%d",
1025 ver->FirmwareId, ver->SupportedProtocols,
1026 ver->RomVersionMajor, ver->RomVersionMinor);
1027
1028 coredev->mode = ver->FirmwareId == 255 ?
1029 DEVICE_MODE_NONE : ver->FirmwareId;
1030 coredev->modes_supported = ver->SupportedProtocols;
1031
1032 complete(&coredev->version_ex_done);
1033 break;
1034 }
1035 case MSG_SMS_INIT_DEVICE_RES:
1036 sms_debug("MSG_SMS_INIT_DEVICE_RES");
1037 complete(&coredev->init_device_done);
1038 break;
1039 case MSG_SW_RELOAD_START_RES:
1040 sms_debug("MSG_SW_RELOAD_START_RES");
1041 complete(&coredev->reload_start_done);
1042 break;
1043 case MSG_SMS_DATA_DOWNLOAD_RES:
1044 complete(&coredev->data_download_done);
1045 break;
1046 case MSG_SW_RELOAD_EXEC_RES:
1047 sms_debug("MSG_SW_RELOAD_EXEC_RES");
1048 break;
1049 case MSG_SMS_SWDOWNLOAD_TRIGGER_RES:
1050 sms_debug("MSG_SMS_SWDOWNLOAD_TRIGGER_RES");
1051 complete(&coredev->trigger_done);
1052 break;
1053 case MSG_SMS_SLEEP_RESUME_COMP_IND:
1054 complete(&coredev->resume_done);
1055 break;
1056 case MSG_SMS_GPIO_CONFIG_EX_RES:
1057 sms_debug("MSG_SMS_GPIO_CONFIG_EX_RES");
1058 complete(&coredev->gpio_configuration_done);
1059 break;
1060 case MSG_SMS_GPIO_SET_LEVEL_RES:
1061 sms_debug("MSG_SMS_GPIO_SET_LEVEL_RES");
1062 complete(&coredev->gpio_set_level_done);
1063 break;
1064 case MSG_SMS_GPIO_GET_LEVEL_RES:
1065 {
1066 u32 *msgdata = (u32 *) phdr;
1067 coredev->gpio_get_res = msgdata[1];
1068 sms_debug("MSG_SMS_GPIO_GET_LEVEL_RES gpio level %d",
1069 coredev->gpio_get_res);
1070 complete(&coredev->gpio_get_level_done);
1071 break;
1072 }
1073 case MSG_SMS_START_IR_RES:
1074 complete(&coredev->ir_init_done);
1075 break;
1076 case MSG_SMS_IR_SAMPLES_IND:
1077 sms_ir_event(coredev,
1078 (const char *)
1079 ((char *)phdr
1080 + sizeof(struct SmsMsgHdr_ST)),
1081 (int)phdr->msgLength
1082 - sizeof(struct SmsMsgHdr_ST));
1083 break;
1084
1085 default:
1086 break;
1087 }
1088 smscore_putbuffer(coredev, cb);
1089 }
1090 }
1091 EXPORT_SYMBOL_GPL(smscore_onresponse);
1092
1093 /**
1094 * return pointer to next free buffer descriptor from core pool
1095 *
1096 * @param coredev pointer to a coredev object returned by
1097 * smscore_register_device
1098 *
1099 * @return pointer to descriptor on success, NULL on error.
1100 */
1101
1102 struct smscore_buffer_t *get_entry(struct smscore_device_t *coredev)
1103 {
1104 struct smscore_buffer_t *cb = NULL;
1105 unsigned long flags;
1106
1107 spin_lock_irqsave(&coredev->bufferslock, flags);
1108 if (!list_empty(&coredev->buffers)) {
1109 cb = (struct smscore_buffer_t *) coredev->buffers.next;
1110 list_del(&cb->entry);
1111 }
1112 spin_unlock_irqrestore(&coredev->bufferslock, flags);
1113 return cb;
1114 }
1115
1116 struct smscore_buffer_t *smscore_getbuffer(struct smscore_device_t *coredev)
1117 {
1118 struct smscore_buffer_t *cb = NULL;
1119
1120 wait_event(coredev->buffer_mng_waitq, (cb = get_entry(coredev)));
1121
1122 return cb;
1123 }
1124 EXPORT_SYMBOL_GPL(smscore_getbuffer);
1125
1126 /**
1127 * return buffer descriptor to a pool
1128 *
1129 * @param coredev pointer to a coredev object returned by
1130 * smscore_register_device
1131 * @param cb pointer buffer descriptor
1132 *
1133 */
1134 void smscore_putbuffer(struct smscore_device_t *coredev,
1135 struct smscore_buffer_t *cb) {
1136 wake_up_interruptible(&coredev->buffer_mng_waitq);
1137 list_add_locked(&cb->entry, &coredev->buffers, &coredev->bufferslock);
1138 }
1139 EXPORT_SYMBOL_GPL(smscore_putbuffer);
1140
1141 static int smscore_validate_client(struct smscore_device_t *coredev,
1142 struct smscore_client_t *client,
1143 int data_type, int id)
1144 {
1145 struct smscore_idlist_t *listentry;
1146 struct smscore_client_t *registered_client;
1147
1148 if (!client) {
1149 sms_err("bad parameter.");
1150 return -EINVAL;
1151 }
1152 registered_client = smscore_find_client(coredev, data_type, id);
1153 if (registered_client == client)
1154 return 0;
1155
1156 if (registered_client) {
1157 sms_err("The msg ID already registered to another client.");
1158 return -EEXIST;
1159 }
1160 listentry = kzalloc(sizeof(struct smscore_idlist_t), GFP_KERNEL);
1161 if (!listentry) {
1162 sms_err("Can't allocate memory for client id.");
1163 return -ENOMEM;
1164 }
1165 listentry->id = id;
1166 listentry->data_type = data_type;
1167 list_add_locked(&listentry->entry, &client->idlist,
1168 &coredev->clientslock);
1169 return 0;
1170 }
1171
1172 /**
1173 * creates smsclient object, check that id is taken by another client
1174 *
1175 * @param coredev pointer to a coredev object from clients hotplug
1176 * @param initial_id all messages with this id would be sent to this client
1177 * @param data_type all messages of this type would be sent to this client
1178 * @param onresponse_handler client handler that is called to
1179 * process incoming messages
1180 * @param onremove_handler client handler that is called when device is removed
1181 * @param context client-specific context
1182 * @param client pointer to a value that receives created smsclient object
1183 *
1184 * @return 0 on success, <0 on error.
1185 */
1186 int smscore_register_client(struct smscore_device_t *coredev,
1187 struct smsclient_params_t *params,
1188 struct smscore_client_t **client)
1189 {
1190 struct smscore_client_t *newclient;
1191 /* check that no other channel with same parameters exists */
1192 if (smscore_find_client(coredev, params->data_type,
1193 params->initial_id)) {
1194 sms_err("Client already exist.");
1195 return -EEXIST;
1196 }
1197
1198 newclient = kzalloc(sizeof(struct smscore_client_t), GFP_KERNEL);
1199 if (!newclient) {
1200 sms_err("Failed to allocate memory for client.");
1201 return -ENOMEM;
1202 }
1203
1204 INIT_LIST_HEAD(&newclient->idlist);
1205 newclient->coredev = coredev;
1206 newclient->onresponse_handler = params->onresponse_handler;
1207 newclient->onremove_handler = params->onremove_handler;
1208 newclient->context = params->context;
1209 list_add_locked(&newclient->entry, &coredev->clients,
1210 &coredev->clientslock);
1211 smscore_validate_client(coredev, newclient, params->data_type,
1212 params->initial_id);
1213 *client = newclient;
1214 sms_debug("%p %d %d", params->context, params->data_type,
1215 params->initial_id);
1216
1217 return 0;
1218 }
1219 EXPORT_SYMBOL_GPL(smscore_register_client);
1220
1221 /**
1222 * frees smsclient object and all subclients associated with it
1223 *
1224 * @param client pointer to smsclient object returned by
1225 * smscore_register_client
1226 *
1227 */
1228 void smscore_unregister_client(struct smscore_client_t *client)
1229 {
1230 struct smscore_device_t *coredev = client->coredev;
1231 unsigned long flags;
1232
1233 spin_lock_irqsave(&coredev->clientslock, flags);
1234
1235
1236 while (!list_empty(&client->idlist)) {
1237 struct smscore_idlist_t *identry =
1238 (struct smscore_idlist_t *) client->idlist.next;
1239 list_del(&identry->entry);
1240 kfree(identry);
1241 }
1242
1243 sms_info("%p", client->context);
1244
1245 list_del(&client->entry);
1246 kfree(client);
1247
1248 spin_unlock_irqrestore(&coredev->clientslock, flags);
1249 }
1250 EXPORT_SYMBOL_GPL(smscore_unregister_client);
1251
1252 /**
1253 * verifies that source id is not taken by another client,
1254 * calls device handler to send requests to the device
1255 *
1256 * @param client pointer to smsclient object returned by
1257 * smscore_register_client
1258 * @param buffer pointer to a request buffer
1259 * @param size size (in bytes) of request buffer
1260 *
1261 * @return 0 on success, <0 on error.
1262 */
1263 int smsclient_sendrequest(struct smscore_client_t *client,
1264 void *buffer, size_t size)
1265 {
1266 struct smscore_device_t *coredev;
1267 struct SmsMsgHdr_ST *phdr = (struct SmsMsgHdr_ST *) buffer;
1268 int rc;
1269
1270 if (client == NULL) {
1271 sms_err("Got NULL client");
1272 return -EINVAL;
1273 }
1274
1275 coredev = client->coredev;
1276
1277 /* check that no other channel with same id exists */
1278 if (coredev == NULL) {
1279 sms_err("Got NULL coredev");
1280 return -EINVAL;
1281 }
1282
1283 rc = smscore_validate_client(client->coredev, client, 0,
1284 phdr->msgSrcId);
1285 if (rc < 0)
1286 return rc;
1287
1288 return coredev->sendrequest_handler(coredev->context, buffer, size);
1289 }
1290 EXPORT_SYMBOL_GPL(smsclient_sendrequest);
1291
1292
1293 /* old GPIO managements implementation */
1294 int smscore_configure_gpio(struct smscore_device_t *coredev, u32 pin,
1295 struct smscore_config_gpio *pinconfig)
1296 {
1297 struct {
1298 struct SmsMsgHdr_ST hdr;
1299 u32 data[6];
1300 } msg;
1301
1302 if (coredev->device_flags & SMS_DEVICE_FAMILY2) {
1303 msg.hdr.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
1304 msg.hdr.msgDstId = HIF_TASK;
1305 msg.hdr.msgFlags = 0;
1306 msg.hdr.msgType = MSG_SMS_GPIO_CONFIG_EX_REQ;
1307 msg.hdr.msgLength = sizeof(msg);
1308
1309 msg.data[0] = pin;
1310 msg.data[1] = pinconfig->pullupdown;
1311
1312 /* Convert slew rate for Nova: Fast(0) = 3 / Slow(1) = 0; */
1313 msg.data[2] = pinconfig->outputslewrate == 0 ? 3 : 0;
1314
1315 switch (pinconfig->outputdriving) {
1316 case SMS_GPIO_OUTPUTDRIVING_16mA:
1317 msg.data[3] = 7; /* Nova - 16mA */
1318 break;
1319 case SMS_GPIO_OUTPUTDRIVING_12mA:
1320 msg.data[3] = 5; /* Nova - 11mA */
1321 break;
1322 case SMS_GPIO_OUTPUTDRIVING_8mA:
1323 msg.data[3] = 3; /* Nova - 7mA */
1324 break;
1325 case SMS_GPIO_OUTPUTDRIVING_4mA:
1326 default:
1327 msg.data[3] = 2; /* Nova - 4mA */
1328 break;
1329 }
1330
1331 msg.data[4] = pinconfig->direction;
1332 msg.data[5] = 0;
1333 } else /* TODO: SMS_DEVICE_FAMILY1 */
1334 return -EINVAL;
1335
1336 return coredev->sendrequest_handler(coredev->context,
1337 &msg, sizeof(msg));
1338 }
1339
1340 int smscore_set_gpio(struct smscore_device_t *coredev, u32 pin, int level)
1341 {
1342 struct {
1343 struct SmsMsgHdr_ST hdr;
1344 u32 data[3];
1345 } msg;
1346
1347 if (pin > MAX_GPIO_PIN_NUMBER)
1348 return -EINVAL;
1349
1350 msg.hdr.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
1351 msg.hdr.msgDstId = HIF_TASK;
1352 msg.hdr.msgFlags = 0;
1353 msg.hdr.msgType = MSG_SMS_GPIO_SET_LEVEL_REQ;
1354 msg.hdr.msgLength = sizeof(msg);
1355
1356 msg.data[0] = pin;
1357 msg.data[1] = level ? 1 : 0;
1358 msg.data[2] = 0;
1359
1360 return coredev->sendrequest_handler(coredev->context,
1361 &msg, sizeof(msg));
1362 }
1363
1364 /* new GPIO management implementation */
1365 static int GetGpioPinParams(u32 PinNum, u32 *pTranslatedPinNum,
1366 u32 *pGroupNum, u32 *pGroupCfg) {
1367
1368 *pGroupCfg = 1;
1369
1370 if (PinNum <= 1) {
1371 *pTranslatedPinNum = 0;
1372 *pGroupNum = 9;
1373 *pGroupCfg = 2;
1374 } else if (PinNum >= 2 && PinNum <= 6) {
1375 *pTranslatedPinNum = 2;
1376 *pGroupNum = 0;
1377 *pGroupCfg = 2;
1378 } else if (PinNum >= 7 && PinNum <= 11) {
1379 *pTranslatedPinNum = 7;
1380 *pGroupNum = 1;
1381 } else if (PinNum >= 12 && PinNum <= 15) {
1382 *pTranslatedPinNum = 12;
1383 *pGroupNum = 2;
1384 *pGroupCfg = 3;
1385 } else if (PinNum == 16) {
1386 *pTranslatedPinNum = 16;
1387 *pGroupNum = 23;
1388 } else if (PinNum >= 17 && PinNum <= 24) {
1389 *pTranslatedPinNum = 17;
1390 *pGroupNum = 3;
1391 } else if (PinNum == 25) {
1392 *pTranslatedPinNum = 25;
1393 *pGroupNum = 6;
1394 } else if (PinNum >= 26 && PinNum <= 28) {
1395 *pTranslatedPinNum = 26;
1396 *pGroupNum = 4;
1397 } else if (PinNum == 29) {
1398 *pTranslatedPinNum = 29;
1399 *pGroupNum = 5;
1400 *pGroupCfg = 2;
1401 } else if (PinNum == 30) {
1402 *pTranslatedPinNum = 30;
1403 *pGroupNum = 8;
1404 } else if (PinNum == 31) {
1405 *pTranslatedPinNum = 31;
1406 *pGroupNum = 17;
1407 } else
1408 return -1;
1409
1410 *pGroupCfg <<= 24;
1411
1412 return 0;
1413 }
1414
1415 int smscore_gpio_configure(struct smscore_device_t *coredev, u8 PinNum,
1416 struct smscore_gpio_config *pGpioConfig) {
1417
1418 u32 totalLen;
1419 u32 TranslatedPinNum = 0;
1420 u32 GroupNum = 0;
1421 u32 ElectricChar;
1422 u32 groupCfg;
1423 void *buffer;
1424 int rc;
1425
1426 struct SetGpioMsg {
1427 struct SmsMsgHdr_ST xMsgHeader;
1428 u32 msgData[6];
1429 } *pMsg;
1430
1431
1432 if (PinNum > MAX_GPIO_PIN_NUMBER)
1433 return -EINVAL;
1434
1435 if (pGpioConfig == NULL)
1436 return -EINVAL;
1437
1438 totalLen = sizeof(struct SmsMsgHdr_ST) + (sizeof(u32) * 6);
1439
1440 buffer = kmalloc(totalLen + SMS_DMA_ALIGNMENT,
1441 GFP_KERNEL | GFP_DMA);
1442 if (!buffer)
1443 return -ENOMEM;
1444
1445 pMsg = (struct SetGpioMsg *) SMS_ALIGN_ADDRESS(buffer);
1446
1447 pMsg->xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
1448 pMsg->xMsgHeader.msgDstId = HIF_TASK;
1449 pMsg->xMsgHeader.msgFlags = 0;
1450 pMsg->xMsgHeader.msgLength = (u16) totalLen;
1451 pMsg->msgData[0] = PinNum;
1452
1453 if (!(coredev->device_flags & SMS_DEVICE_FAMILY2)) {
1454 pMsg->xMsgHeader.msgType = MSG_SMS_GPIO_CONFIG_REQ;
1455 if (GetGpioPinParams(PinNum, &TranslatedPinNum, &GroupNum,
1456 &groupCfg) != 0) {
1457 rc = -EINVAL;
1458 goto free;
1459 }
1460
1461 pMsg->msgData[1] = TranslatedPinNum;
1462 pMsg->msgData[2] = GroupNum;
1463 ElectricChar = (pGpioConfig->PullUpDown)
1464 | (pGpioConfig->InputCharacteristics << 2)
1465 | (pGpioConfig->OutputSlewRate << 3)
1466 | (pGpioConfig->OutputDriving << 4);
1467 pMsg->msgData[3] = ElectricChar;
1468 pMsg->msgData[4] = pGpioConfig->Direction;
1469 pMsg->msgData[5] = groupCfg;
1470 } else {
1471 pMsg->xMsgHeader.msgType = MSG_SMS_GPIO_CONFIG_EX_REQ;
1472 pMsg->msgData[1] = pGpioConfig->PullUpDown;
1473 pMsg->msgData[2] = pGpioConfig->OutputSlewRate;
1474 pMsg->msgData[3] = pGpioConfig->OutputDriving;
1475 pMsg->msgData[4] = pGpioConfig->Direction;
1476 pMsg->msgData[5] = 0;
1477 }
1478
1479 smsendian_handle_tx_message((struct SmsMsgHdr_ST *)pMsg);
1480 rc = smscore_sendrequest_and_wait(coredev, pMsg, totalLen,
1481 &coredev->gpio_configuration_done);
1482
1483 if (rc != 0) {
1484 if (rc == -ETIME)
1485 sms_err("smscore_gpio_configure timeout");
1486 else
1487 sms_err("smscore_gpio_configure error");
1488 }
1489 free:
1490 kfree(buffer);
1491
1492 return rc;
1493 }
1494
1495 int smscore_gpio_set_level(struct smscore_device_t *coredev, u8 PinNum,
1496 u8 NewLevel) {
1497
1498 u32 totalLen;
1499 int rc;
1500 void *buffer;
1501
1502 struct SetGpioMsg {
1503 struct SmsMsgHdr_ST xMsgHeader;
1504 u32 msgData[3]; /* keep it 3 ! */
1505 } *pMsg;
1506
1507 if ((NewLevel > 1) || (PinNum > MAX_GPIO_PIN_NUMBER))
1508 return -EINVAL;
1509
1510 totalLen = sizeof(struct SmsMsgHdr_ST) +
1511 (3 * sizeof(u32)); /* keep it 3 ! */
1512
1513 buffer = kmalloc(totalLen + SMS_DMA_ALIGNMENT,
1514 GFP_KERNEL | GFP_DMA);
1515 if (!buffer)
1516 return -ENOMEM;
1517
1518 pMsg = (struct SetGpioMsg *) SMS_ALIGN_ADDRESS(buffer);
1519
1520 pMsg->xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
1521 pMsg->xMsgHeader.msgDstId = HIF_TASK;
1522 pMsg->xMsgHeader.msgFlags = 0;
1523 pMsg->xMsgHeader.msgType = MSG_SMS_GPIO_SET_LEVEL_REQ;
1524 pMsg->xMsgHeader.msgLength = (u16) totalLen;
1525 pMsg->msgData[0] = PinNum;
1526 pMsg->msgData[1] = NewLevel;
1527
1528 /* Send message to SMS */
1529 smsendian_handle_tx_message((struct SmsMsgHdr_ST *)pMsg);
1530 rc = smscore_sendrequest_and_wait(coredev, pMsg, totalLen,
1531 &coredev->gpio_set_level_done);
1532
1533 if (rc != 0) {
1534 if (rc == -ETIME)
1535 sms_err("smscore_gpio_set_level timeout");
1536 else
1537 sms_err("smscore_gpio_set_level error");
1538 }
1539 kfree(buffer);
1540
1541 return rc;
1542 }
1543
1544 int smscore_gpio_get_level(struct smscore_device_t *coredev, u8 PinNum,
1545 u8 *level) {
1546
1547 u32 totalLen;
1548 int rc;
1549 void *buffer;
1550
1551 struct SetGpioMsg {
1552 struct SmsMsgHdr_ST xMsgHeader;
1553 u32 msgData[2];
1554 } *pMsg;
1555
1556
1557 if (PinNum > MAX_GPIO_PIN_NUMBER)
1558 return -EINVAL;
1559
1560 totalLen = sizeof(struct SmsMsgHdr_ST) + (2 * sizeof(u32));
1561
1562 buffer = kmalloc(totalLen + SMS_DMA_ALIGNMENT,
1563 GFP_KERNEL | GFP_DMA);
1564 if (!buffer)
1565 return -ENOMEM;
1566
1567 pMsg = (struct SetGpioMsg *) SMS_ALIGN_ADDRESS(buffer);
1568
1569 pMsg->xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
1570 pMsg->xMsgHeader.msgDstId = HIF_TASK;
1571 pMsg->xMsgHeader.msgFlags = 0;
1572 pMsg->xMsgHeader.msgType = MSG_SMS_GPIO_GET_LEVEL_REQ;
1573 pMsg->xMsgHeader.msgLength = (u16) totalLen;
1574 pMsg->msgData[0] = PinNum;
1575 pMsg->msgData[1] = 0;
1576
1577 /* Send message to SMS */
1578 smsendian_handle_tx_message((struct SmsMsgHdr_ST *)pMsg);
1579 rc = smscore_sendrequest_and_wait(coredev, pMsg, totalLen,
1580 &coredev->gpio_get_level_done);
1581
1582 if (rc != 0) {
1583 if (rc == -ETIME)
1584 sms_err("smscore_gpio_get_level timeout");
1585 else
1586 sms_err("smscore_gpio_get_level error");
1587 }
1588 kfree(buffer);
1589
1590 /* Its a race between other gpio_get_level() and the copy of the single
1591 * global 'coredev->gpio_get_res' to the function's variable 'level'
1592 */
1593 *level = coredev->gpio_get_res;
1594
1595 return rc;
1596 }
1597
1598 static int __init smscore_module_init(void)
1599 {
1600 int rc = 0;
1601
1602 INIT_LIST_HEAD(&g_smscore_notifyees);
1603 INIT_LIST_HEAD(&g_smscore_devices);
1604 kmutex_init(&g_smscore_deviceslock);
1605
1606 INIT_LIST_HEAD(&g_smscore_registry);
1607 kmutex_init(&g_smscore_registrylock);
1608
1609 return rc;
1610 }
1611
1612 static void __exit smscore_module_exit(void)
1613 {
1614 kmutex_lock(&g_smscore_deviceslock);
1615 while (!list_empty(&g_smscore_notifyees)) {
1616 struct smscore_device_notifyee_t *notifyee =
1617 (struct smscore_device_notifyee_t *)
1618 g_smscore_notifyees.next;
1619
1620 list_del(&notifyee->entry);
1621 kfree(notifyee);
1622 }
1623 kmutex_unlock(&g_smscore_deviceslock);
1624
1625 kmutex_lock(&g_smscore_registrylock);
1626 while (!list_empty(&g_smscore_registry)) {
1627 struct smscore_registry_entry_t *entry =
1628 (struct smscore_registry_entry_t *)
1629 g_smscore_registry.next;
1630
1631 list_del(&entry->entry);
1632 kfree(entry);
1633 }
1634 kmutex_unlock(&g_smscore_registrylock);
1635
1636 sms_debug("");
1637 }
1638
1639 module_init(smscore_module_init);
1640 module_exit(smscore_module_exit);
1641
1642 MODULE_DESCRIPTION("Siano MDTV Core module");
1643 MODULE_AUTHOR("Siano Mobile Silicon, Inc. (uris@siano-ms.com)");
1644 MODULE_LICENSE("GPL");
Linux Btrfs Development