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1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Copyright(c) 2022 Intel Corporation
4//
5// Authors: Ranjani Sridharan <[email protected]>
6// Peter Ujfalusi <[email protected]>
7//
8
9#include <linux/debugfs.h>
10#include <linux/errno.h>
11#include <linux/list.h>
12#include <linux/module.h>
13#include <linux/mutex.h>
14#include <linux/slab.h>
15#include <sound/sof/ipc4/header.h>
16#include "ops.h"
17#include "sof-client.h"
18#include "sof-priv.h"
19#include "ipc3-priv.h"
20#include "ipc4-priv.h"
21
22/**
23 * struct sof_ipc_event_entry - IPC client event description
24 * @ipc_msg_type: IPC msg type of the event the client is interested
25 * @cdev: sof_client_dev of the requesting client
26 * @callback: Callback function of the client
27 * @list: item in SOF core client event list
28 */
29struct sof_ipc_event_entry {
30 u32 ipc_msg_type;
31 struct sof_client_dev *cdev;
32 sof_client_event_callback callback;
33 struct list_head list;
34};
35
36/**
37 * struct sof_state_event_entry - DSP panic event subscription entry
38 * @cdev: sof_client_dev of the requesting client
39 * @callback: Callback function of the client
40 * @list: item in SOF core client event list
41 */
42struct sof_state_event_entry {
43 struct sof_client_dev *cdev;
44 sof_client_fw_state_callback callback;
45 struct list_head list;
46};
47
48/**
49 * struct sof_client_dev_entry - client device entry for internal management use
50 * @sdev: pointer to SOF core device struct
51 * @list: item in SOF core client dev list
52 * @client_dev: SOF client device
53 */
54struct sof_client_dev_entry {
55 struct snd_sof_dev *sdev;
56 struct list_head list;
57
58 struct sof_client_dev client_dev;
59};
60
61#define cdev_to_centry(cdev) \
62 container_of(cdev, struct sof_client_dev_entry, client_dev)
63
64static void sof_client_auxdev_release(struct device *dev)
65{
66 struct auxiliary_device *auxdev = to_auxiliary_dev(dev);
67 struct sof_client_dev *cdev = auxiliary_dev_to_sof_client_dev(auxdev);
68 struct sof_client_dev_entry *centry = cdev_to_centry(cdev);
69
70 kfree(cdev->auxdev.dev.platform_data);
71 kfree(centry);
72}
73
74static int sof_client_dev_add_data(struct sof_client_dev *cdev, const void *data,
75 size_t size)
76{
77 void *d = NULL;
78
79 if (data) {
80 d = kmemdup(data, size, GFP_KERNEL);
81 if (!d)
82 return -ENOMEM;
83 }
84
85 cdev->auxdev.dev.platform_data = d;
86 return 0;
87}
88
89#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST)
90static int sof_register_ipc_flood_test(struct snd_sof_dev *sdev)
91{
92 int ret = 0;
93 int i;
94
95 if (sdev->pdata->ipc_type != SOF_IPC_TYPE_3)
96 return 0;
97
98 for (i = 0; i < CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST_NUM; i++) {
99 ret = sof_client_dev_register(sdev, "ipc_flood", i, NULL, 0);
100 if (ret < 0)
101 break;
102 }
103
104 if (ret) {
105 for (; i >= 0; --i)
106 sof_client_dev_unregister(sdev, "ipc_flood", i);
107 }
108
109 return ret;
110}
111
112static void sof_unregister_ipc_flood_test(struct snd_sof_dev *sdev)
113{
114 int i;
115
116 for (i = 0; i < CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST_NUM; i++)
117 sof_client_dev_unregister(sdev, "ipc_flood", i);
118}
119#else
120static inline int sof_register_ipc_flood_test(struct snd_sof_dev *sdev)
121{
122 return 0;
123}
124
125static inline void sof_unregister_ipc_flood_test(struct snd_sof_dev *sdev) {}
126#endif /* CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST */
127
128#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_MSG_INJECTOR)
129static int sof_register_ipc_msg_injector(struct snd_sof_dev *sdev)
130{
131 return sof_client_dev_register(sdev, "msg_injector", 0, NULL, 0);
132}
133
134static void sof_unregister_ipc_msg_injector(struct snd_sof_dev *sdev)
135{
136 sof_client_dev_unregister(sdev, "msg_injector", 0);
137}
138#else
139static inline int sof_register_ipc_msg_injector(struct snd_sof_dev *sdev)
140{
141 return 0;
142}
143
144static inline void sof_unregister_ipc_msg_injector(struct snd_sof_dev *sdev) {}
145#endif /* CONFIG_SND_SOC_SOF_DEBUG_IPC_MSG_INJECTOR */
146
147#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_KERNEL_INJECTOR)
148static int sof_register_ipc_kernel_injector(struct snd_sof_dev *sdev)
149{
150 /* Only IPC3 supported right now */
151 if (sdev->pdata->ipc_type != SOF_IPC_TYPE_3)
152 return 0;
153
154 return sof_client_dev_register(sdev, "kernel_injector", 0, NULL, 0);
155}
156
157static void sof_unregister_ipc_kernel_injector(struct snd_sof_dev *sdev)
158{
159 sof_client_dev_unregister(sdev, "kernel_injector", 0);
160}
161#else
162static inline int sof_register_ipc_kernel_injector(struct snd_sof_dev *sdev)
163{
164 return 0;
165}
166
167static inline void sof_unregister_ipc_kernel_injector(struct snd_sof_dev *sdev) {}
168#endif /* CONFIG_SND_SOC_SOF_DEBUG_IPC_KERNEL_INJECTOR */
169
170int sof_register_clients(struct snd_sof_dev *sdev)
171{
172 int ret;
173
174 if (sdev->dspless_mode_selected)
175 return 0;
176
177 /* Register platform independent client devices */
178 ret = sof_register_ipc_flood_test(sdev);
179 if (ret) {
180 dev_err(sdev->dev, "IPC flood test client registration failed\n");
181 return ret;
182 }
183
184 ret = sof_register_ipc_msg_injector(sdev);
185 if (ret) {
186 dev_err(sdev->dev, "IPC message injector client registration failed\n");
187 goto err_msg_injector;
188 }
189
190 ret = sof_register_ipc_kernel_injector(sdev);
191 if (ret) {
192 dev_err(sdev->dev, "IPC kernel injector client registration failed\n");
193 goto err_kernel_injector;
194 }
195
196 /* Platform dependent client device registration */
197
198 if (sof_ops(sdev) && sof_ops(sdev)->register_ipc_clients)
199 ret = sof_ops(sdev)->register_ipc_clients(sdev);
200
201 if (!ret)
202 return 0;
203
204 sof_unregister_ipc_kernel_injector(sdev);
205
206err_kernel_injector:
207 sof_unregister_ipc_msg_injector(sdev);
208
209err_msg_injector:
210 sof_unregister_ipc_flood_test(sdev);
211
212 return ret;
213}
214
215void sof_unregister_clients(struct snd_sof_dev *sdev)
216{
217 if (sof_ops(sdev) && sof_ops(sdev)->unregister_ipc_clients)
218 sof_ops(sdev)->unregister_ipc_clients(sdev);
219
220 sof_unregister_ipc_kernel_injector(sdev);
221 sof_unregister_ipc_msg_injector(sdev);
222 sof_unregister_ipc_flood_test(sdev);
223}
224
225int sof_client_dev_register(struct snd_sof_dev *sdev, const char *name, u32 id,
226 const void *data, size_t size)
227{
228 struct sof_client_dev_entry *centry;
229 struct auxiliary_device *auxdev;
230 struct sof_client_dev *cdev;
231 int ret;
232
233 centry = kzalloc_obj(*centry);
234 if (!centry)
235 return -ENOMEM;
236
237 cdev = &centry->client_dev;
238
239 centry->sdev = sdev;
240 auxdev = &cdev->auxdev;
241 auxdev->name = name;
242 auxdev->dev.parent = sdev->dev;
243 auxdev->dev.release = sof_client_auxdev_release;
244 auxdev->id = id;
245
246 ret = sof_client_dev_add_data(cdev, data, size);
247 if (ret < 0)
248 goto err_dev_add_data;
249
250 ret = auxiliary_device_init(auxdev);
251 if (ret < 0) {
252 dev_err(sdev->dev, "failed to initialize client dev %s.%d\n", name, id);
253 goto err_dev_init;
254 }
255
256 ret = auxiliary_device_add(&cdev->auxdev);
257 if (ret < 0) {
258 dev_err(sdev->dev, "failed to add client dev %s.%d\n", name, id);
259 /*
260 * sof_client_auxdev_release() will be invoked to free up memory
261 * allocations through put_device()
262 */
263 auxiliary_device_uninit(&cdev->auxdev);
264 return ret;
265 }
266
267 /* add to list of SOF client devices */
268 scoped_guard(mutex, &sdev->ipc_client_mutex)
269 list_add(&centry->list, &sdev->ipc_client_list);
270
271 return 0;
272
273err_dev_init:
274 kfree(cdev->auxdev.dev.platform_data);
275
276err_dev_add_data:
277 kfree(centry);
278
279 return ret;
280}
281EXPORT_SYMBOL_NS_GPL(sof_client_dev_register, "SND_SOC_SOF_CLIENT");
282
283void sof_client_dev_unregister(struct snd_sof_dev *sdev, const char *name, u32 id)
284{
285 struct sof_client_dev_entry *centry;
286
287 guard(mutex)(&sdev->ipc_client_mutex);
288
289 /*
290 * sof_client_auxdev_release() will be invoked to free up memory
291 * allocations through put_device()
292 */
293 list_for_each_entry(centry, &sdev->ipc_client_list, list) {
294 struct sof_client_dev *cdev = &centry->client_dev;
295
296 if (!strcmp(cdev->auxdev.name, name) && cdev->auxdev.id == id) {
297 list_del(&centry->list);
298 auxiliary_device_delete(&cdev->auxdev);
299 auxiliary_device_uninit(&cdev->auxdev);
300 break;
301 }
302 }
303}
304EXPORT_SYMBOL_NS_GPL(sof_client_dev_unregister, "SND_SOC_SOF_CLIENT");
305
306int sof_client_ipc_tx_message(struct sof_client_dev *cdev, void *ipc_msg,
307 void *reply_data, size_t reply_bytes)
308{
309 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
310
311 if (sdev->pdata->ipc_type == SOF_IPC_TYPE_3) {
312 struct sof_ipc_cmd_hdr *hdr = ipc_msg;
313
314 return sof_ipc_tx_message(sdev->ipc, ipc_msg, hdr->size,
315 reply_data, reply_bytes);
316 } else if (sdev->pdata->ipc_type == SOF_IPC_TYPE_4) {
317 struct sof_ipc4_msg *msg = ipc_msg;
318
319 return sof_ipc_tx_message(sdev->ipc, ipc_msg, msg->data_size,
320 reply_data, reply_bytes);
321 }
322
323 return -EINVAL;
324}
325EXPORT_SYMBOL_NS_GPL(sof_client_ipc_tx_message, "SND_SOC_SOF_CLIENT");
326
327int sof_client_ipc_rx_message(struct sof_client_dev *cdev, void *ipc_msg, void *msg_buf)
328{
329 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
330
331 if (IS_ENABLED(CONFIG_SND_SOC_SOF_IPC3) &&
332 sdev->pdata->ipc_type == SOF_IPC_TYPE_3) {
333 struct sof_ipc_cmd_hdr *hdr = ipc_msg;
334
335 if (hdr->size < sizeof(hdr)) {
336 dev_err(sdev->dev, "The received message size is invalid\n");
337 return -EINVAL;
338 }
339
340 sof_ipc3_do_rx_work(sdev, ipc_msg, msg_buf);
341 return 0;
342 }
343
344 return -EOPNOTSUPP;
345}
346EXPORT_SYMBOL_NS_GPL(sof_client_ipc_rx_message, "SND_SOC_SOF_CLIENT");
347
348int sof_client_ipc_set_get_data(struct sof_client_dev *cdev, void *ipc_msg,
349 bool set)
350{
351 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
352
353 if (sdev->pdata->ipc_type == SOF_IPC_TYPE_3) {
354 struct sof_ipc_cmd_hdr *hdr = ipc_msg;
355
356 return sof_ipc_set_get_data(sdev->ipc, ipc_msg, hdr->size, set);
357 } else if (sdev->pdata->ipc_type == SOF_IPC_TYPE_4) {
358 struct sof_ipc4_msg *msg = ipc_msg;
359
360 return sof_ipc_set_get_data(sdev->ipc, ipc_msg, msg->data_size,
361 set);
362 }
363
364 return -EINVAL;
365}
366EXPORT_SYMBOL_NS_GPL(sof_client_ipc_set_get_data, "SND_SOC_SOF_CLIENT");
367
368#ifdef CONFIG_SND_SOC_SOF_IPC4
369struct sof_ipc4_fw_module *sof_client_ipc4_find_module(struct sof_client_dev *c, const guid_t *uuid)
370{
371 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(c);
372
373 if (sdev->pdata->ipc_type == SOF_IPC_TYPE_4)
374 return sof_ipc4_find_module_by_uuid(sdev, uuid);
375 dev_err(sdev->dev, "Only supported with IPC4\n");
376
377 return NULL;
378}
379EXPORT_SYMBOL_NS_GPL(sof_client_ipc4_find_module, "SND_SOC_SOF_CLIENT");
380
381struct snd_sof_widget *sof_client_ipc4_find_swidget_by_id(struct sof_client_dev *cdev,
382 u32 module_id, int instance_id)
383{
384 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
385
386 if (sdev->pdata->ipc_type == SOF_IPC_TYPE_4)
387 return sof_ipc4_find_swidget_by_ids(sdev, module_id, instance_id);
388 dev_err(sdev->dev, "Only supported with IPC4\n");
389
390 return NULL;
391}
392EXPORT_SYMBOL_NS_GPL(sof_client_ipc4_find_swidget_by_id, "SND_SOC_SOF_CLIENT");
393#endif
394
395int sof_suspend_clients(struct snd_sof_dev *sdev, pm_message_t state)
396{
397 const struct auxiliary_driver *adrv;
398 struct sof_client_dev_entry *centry;
399
400 guard(mutex)(&sdev->ipc_client_mutex);
401
402 list_for_each_entry(centry, &sdev->ipc_client_list, list) {
403 struct sof_client_dev *cdev = &centry->client_dev;
404
405 /* Skip devices without loaded driver */
406 if (!cdev->auxdev.dev.driver)
407 continue;
408
409 adrv = to_auxiliary_drv(cdev->auxdev.dev.driver);
410 if (adrv->suspend)
411 adrv->suspend(&cdev->auxdev, state);
412 }
413
414 return 0;
415}
416EXPORT_SYMBOL_NS_GPL(sof_suspend_clients, "SND_SOC_SOF_CLIENT");
417
418int sof_resume_clients(struct snd_sof_dev *sdev)
419{
420 const struct auxiliary_driver *adrv;
421 struct sof_client_dev_entry *centry;
422
423 guard(mutex)(&sdev->ipc_client_mutex);
424
425 list_for_each_entry(centry, &sdev->ipc_client_list, list) {
426 struct sof_client_dev *cdev = &centry->client_dev;
427
428 /* Skip devices without loaded driver */
429 if (!cdev->auxdev.dev.driver)
430 continue;
431
432 adrv = to_auxiliary_drv(cdev->auxdev.dev.driver);
433 if (adrv->resume)
434 adrv->resume(&cdev->auxdev);
435 }
436
437 return 0;
438}
439EXPORT_SYMBOL_NS_GPL(sof_resume_clients, "SND_SOC_SOF_CLIENT");
440
441struct dentry *sof_client_get_debugfs_root(struct sof_client_dev *cdev)
442{
443 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
444
445 return sdev->debugfs_root;
446}
447EXPORT_SYMBOL_NS_GPL(sof_client_get_debugfs_root, "SND_SOC_SOF_CLIENT");
448
449/* DMA buffer allocation in client drivers must use the core SOF device */
450struct device *sof_client_get_dma_dev(struct sof_client_dev *cdev)
451{
452 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
453
454 return sdev->dev;
455}
456EXPORT_SYMBOL_NS_GPL(sof_client_get_dma_dev, "SND_SOC_SOF_CLIENT");
457
458const struct sof_ipc_fw_version *sof_client_get_fw_version(struct sof_client_dev *cdev)
459{
460 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
461
462 return &sdev->fw_ready.version;
463}
464EXPORT_SYMBOL_NS_GPL(sof_client_get_fw_version, "SND_SOC_SOF_CLIENT");
465
466size_t sof_client_get_ipc_max_payload_size(struct sof_client_dev *cdev)
467{
468 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
469
470 return sdev->ipc->max_payload_size;
471}
472EXPORT_SYMBOL_NS_GPL(sof_client_get_ipc_max_payload_size, "SND_SOC_SOF_CLIENT");
473
474enum sof_ipc_type sof_client_get_ipc_type(struct sof_client_dev *cdev)
475{
476 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
477
478 return sdev->pdata->ipc_type;
479}
480EXPORT_SYMBOL_NS_GPL(sof_client_get_ipc_type, "SND_SOC_SOF_CLIENT");
481
482int sof_client_boot_dsp(struct sof_client_dev *cdev)
483{
484 return snd_sof_boot_dsp_firmware(sof_client_dev_to_sof_dev(cdev));
485}
486EXPORT_SYMBOL_NS_GPL(sof_client_boot_dsp, "SND_SOC_SOF_CLIENT");
487
488/* module refcount management of SOF core */
489int sof_client_core_module_get(struct sof_client_dev *cdev)
490{
491 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
492
493 if (!try_module_get(sdev->dev->driver->owner))
494 return -ENODEV;
495
496 return 0;
497}
498EXPORT_SYMBOL_NS_GPL(sof_client_core_module_get, "SND_SOC_SOF_CLIENT");
499
500void sof_client_core_module_put(struct sof_client_dev *cdev)
501{
502 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
503
504 module_put(sdev->dev->driver->owner);
505}
506EXPORT_SYMBOL_NS_GPL(sof_client_core_module_put, "SND_SOC_SOF_CLIENT");
507
508/* IPC event handling */
509void sof_client_ipc_rx_dispatcher(struct snd_sof_dev *sdev, void *msg_buf)
510{
511 struct sof_ipc_event_entry *event;
512 u32 msg_type;
513
514 if (sdev->pdata->ipc_type == SOF_IPC_TYPE_3) {
515 struct sof_ipc_cmd_hdr *hdr = msg_buf;
516
517 msg_type = hdr->cmd & SOF_GLB_TYPE_MASK;
518 } else if (sdev->pdata->ipc_type == SOF_IPC_TYPE_4) {
519 struct sof_ipc4_msg *msg = msg_buf;
520
521 msg_type = SOF_IPC4_NOTIFICATION_TYPE_GET(msg->primary);
522 } else {
523 dev_dbg_once(sdev->dev, "Not supported IPC version: %d\n",
524 sdev->pdata->ipc_type);
525 return;
526 }
527
528 guard(mutex)(&sdev->client_event_handler_mutex);
529 list_for_each_entry(event, &sdev->ipc_rx_handler_list, list) {
530 if (event->ipc_msg_type == msg_type)
531 event->callback(event->cdev, msg_buf);
532 }
533}
534
535int sof_client_register_ipc_rx_handler(struct sof_client_dev *cdev,
536 u32 ipc_msg_type,
537 sof_client_event_callback callback)
538{
539 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
540 struct sof_ipc_event_entry *event;
541
542 if (!callback)
543 return -EINVAL;
544
545 if (sdev->pdata->ipc_type == SOF_IPC_TYPE_3) {
546 if (!(ipc_msg_type & SOF_GLB_TYPE_MASK))
547 return -EINVAL;
548 } else if (sdev->pdata->ipc_type == SOF_IPC_TYPE_4) {
549 if (!(ipc_msg_type & SOF_IPC4_NOTIFICATION_TYPE_MASK))
550 return -EINVAL;
551 } else {
552 dev_warn(sdev->dev, "%s: Not supported IPC version: %d\n",
553 __func__, sdev->pdata->ipc_type);
554 return -EINVAL;
555 }
556
557 event = kmalloc_obj(*event);
558 if (!event)
559 return -ENOMEM;
560
561 event->ipc_msg_type = ipc_msg_type;
562 event->cdev = cdev;
563 event->callback = callback;
564
565 /* add to list of SOF client devices */
566 guard(mutex)(&sdev->client_event_handler_mutex);
567 list_add(&event->list, &sdev->ipc_rx_handler_list);
568
569 return 0;
570}
571EXPORT_SYMBOL_NS_GPL(sof_client_register_ipc_rx_handler, "SND_SOC_SOF_CLIENT");
572
573void sof_client_unregister_ipc_rx_handler(struct sof_client_dev *cdev,
574 u32 ipc_msg_type)
575{
576 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
577 struct sof_ipc_event_entry *event;
578
579 guard(mutex)(&sdev->client_event_handler_mutex);
580
581 list_for_each_entry(event, &sdev->ipc_rx_handler_list, list) {
582 if (event->cdev == cdev && event->ipc_msg_type == ipc_msg_type) {
583 list_del(&event->list);
584 kfree(event);
585 break;
586 }
587 }
588}
589EXPORT_SYMBOL_NS_GPL(sof_client_unregister_ipc_rx_handler, "SND_SOC_SOF_CLIENT");
590
591/*DSP state notification and query */
592void sof_client_fw_state_dispatcher(struct snd_sof_dev *sdev)
593{
594 struct sof_state_event_entry *event;
595
596 guard(mutex)(&sdev->client_event_handler_mutex);
597
598 list_for_each_entry(event, &sdev->fw_state_handler_list, list)
599 event->callback(event->cdev, sdev->fw_state);
600}
601
602int sof_client_register_fw_state_handler(struct sof_client_dev *cdev,
603 sof_client_fw_state_callback callback)
604{
605 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
606 struct sof_state_event_entry *event;
607
608 if (!callback)
609 return -EINVAL;
610
611 event = kmalloc_obj(*event);
612 if (!event)
613 return -ENOMEM;
614
615 event->cdev = cdev;
616 event->callback = callback;
617
618 /* add to list of SOF client devices */
619 guard(mutex)(&sdev->client_event_handler_mutex);
620 list_add(&event->list, &sdev->fw_state_handler_list);
621
622 return 0;
623}
624EXPORT_SYMBOL_NS_GPL(sof_client_register_fw_state_handler, "SND_SOC_SOF_CLIENT");
625
626void sof_client_unregister_fw_state_handler(struct sof_client_dev *cdev)
627{
628 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
629 struct sof_state_event_entry *event;
630
631 guard(mutex)(&sdev->client_event_handler_mutex);
632
633 list_for_each_entry(event, &sdev->fw_state_handler_list, list) {
634 if (event->cdev == cdev) {
635 list_del(&event->list);
636 kfree(event);
637 break;
638 }
639 }
640}
641EXPORT_SYMBOL_NS_GPL(sof_client_unregister_fw_state_handler, "SND_SOC_SOF_CLIENT");
642
643enum sof_fw_state sof_client_get_fw_state(struct sof_client_dev *cdev)
644{
645 struct snd_sof_dev *sdev = sof_client_dev_to_sof_dev(cdev);
646
647 return sdev->fw_state;
648}
649EXPORT_SYMBOL_NS_GPL(sof_client_get_fw_state, "SND_SOC_SOF_CLIENT");
650
651struct snd_sof_dev *sof_client_dev_to_sof_dev(struct sof_client_dev *cdev)
652{
653 struct sof_client_dev_entry *centry = cdev_to_centry(cdev);
654
655 return centry->sdev;
656}
657EXPORT_SYMBOL_NS_GPL(sof_client_dev_to_sof_dev, "SND_SOC_SOF_CLIENT");